1use crate::{
2 BlockId, COLUMNAR_SELECTION_MODIFIERS, CURSORS_VISIBLE_FOR, ChunkRendererContext,
3 ChunkReplacement, ContextMenuPlacement, CursorShape, CustomBlockId, DisplayDiffHunk,
4 DisplayPoint, DisplayRow, DocumentHighlightRead, DocumentHighlightWrite, EditDisplayMode,
5 Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle, FILE_HEADER_HEIGHT,
6 FocusedBlock, GutterDimensions, HalfPageDown, HalfPageUp, HandleInput, HoveredCursor,
7 InlayHintRefreshReason, InlineCompletion, JumpData, LineDown, LineHighlight, LineUp,
8 MAX_LINE_LEN, MIN_LINE_NUMBER_DIGITS, MULTI_BUFFER_EXCERPT_HEADER_HEIGHT, OpenExcerpts,
9 PageDown, PageUp, Point, RowExt, RowRangeExt, SelectPhase, SelectedTextHighlight, Selection,
10 SoftWrap, StickyHeaderExcerpt, ToPoint, ToggleFold,
11 code_context_menus::{CodeActionsMenu, MENU_ASIDE_MAX_WIDTH, MENU_ASIDE_MIN_WIDTH, MENU_GAP},
12 display_map::{
13 Block, BlockContext, BlockStyle, DisplaySnapshot, FoldId, HighlightedChunk, ToDisplayPoint,
14 },
15 editor_settings::{
16 CurrentLineHighlight, DoubleClickInMultibuffer, MultiCursorModifier, ScrollBeyondLastLine,
17 ScrollbarAxes, ScrollbarDiagnostics, ShowScrollbar,
18 },
19 git::blame::{BlameRenderer, GitBlame, GlobalBlameRenderer},
20 hover_popover::{
21 self, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT, hover_at,
22 },
23 inlay_hint_settings,
24 items::BufferSearchHighlights,
25 mouse_context_menu::{self, MenuPosition},
26 scroll::scroll_amount::ScrollAmount,
27};
28use buffer_diff::{DiffHunkStatus, DiffHunkStatusKind};
29use client::ParticipantIndex;
30use collections::{BTreeMap, HashMap, HashSet};
31use feature_flags::{Debugger, FeatureFlagAppExt};
32use file_icons::FileIcons;
33use git::{Oid, blame::BlameEntry, status::FileStatus};
34use gpui::{
35 Action, Along, AnyElement, App, AvailableSpace, Axis as ScrollbarAxis, BorderStyle, Bounds,
36 ClickEvent, ContentMask, Context, Corner, Corners, CursorStyle, DispatchPhase, Edges, Element,
37 ElementInputHandler, Entity, Focusable as _, FontId, GlobalElementId, Hitbox, Hsla,
38 InteractiveElement, IntoElement, Keystroke, Length, ModifiersChangedEvent, MouseButton,
39 MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad, ParentElement, Pixels, ScrollDelta,
40 ScrollWheelEvent, ShapedLine, SharedString, Size, StatefulInteractiveElement, Style, Styled,
41 TextRun, TextStyleRefinement, WeakEntity, Window, anchored, deferred, div, fill,
42 linear_color_stop, linear_gradient, outline, point, px, quad, relative, size, solid_background,
43 transparent_black,
44};
45use itertools::Itertools;
46use language::language_settings::{
47 IndentGuideBackgroundColoring, IndentGuideColoring, IndentGuideSettings, ShowWhitespaceSetting,
48};
49use lsp::DiagnosticSeverity;
50use multi_buffer::{
51 Anchor, ExcerptId, ExcerptInfo, ExpandExcerptDirection, ExpandInfo, MultiBufferPoint,
52 MultiBufferRow, RowInfo,
53};
54use project::{
55 debugger::breakpoint_store::Breakpoint,
56 project_settings::{self, GitGutterSetting, GitHunkStyleSetting, ProjectSettings},
57};
58use settings::Settings;
59use smallvec::{SmallVec, smallvec};
60use std::{
61 any::TypeId,
62 borrow::Cow,
63 cmp::{self, Ordering},
64 fmt::{self, Write},
65 iter, mem,
66 ops::{Deref, Range},
67 rc::Rc,
68 sync::Arc,
69 time::Duration,
70};
71use sum_tree::Bias;
72use text::BufferId;
73use theme::{ActiveTheme, Appearance, BufferLineHeight, PlayerColor};
74use ui::{ButtonLike, KeyBinding, POPOVER_Y_PADDING, Tooltip, h_flex, prelude::*};
75use unicode_segmentation::UnicodeSegmentation;
76use util::{RangeExt, ResultExt, debug_panic};
77use workspace::{Workspace, item::Item, notifications::NotifyTaskExt};
78
79const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 7.;
80
81/// Determines what kinds of highlights should be applied to a lines background.
82#[derive(Clone, Copy, Default)]
83struct LineHighlightSpec {
84 selection: bool,
85 breakpoint: bool,
86 _active_stack_frame: bool,
87}
88
89struct SelectionLayout {
90 head: DisplayPoint,
91 cursor_shape: CursorShape,
92 is_newest: bool,
93 is_local: bool,
94 range: Range<DisplayPoint>,
95 active_rows: Range<DisplayRow>,
96 user_name: Option<SharedString>,
97}
98
99impl SelectionLayout {
100 fn new<T: ToPoint + ToDisplayPoint + Clone>(
101 selection: Selection<T>,
102 line_mode: bool,
103 cursor_shape: CursorShape,
104 map: &DisplaySnapshot,
105 is_newest: bool,
106 is_local: bool,
107 user_name: Option<SharedString>,
108 ) -> Self {
109 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
110 let display_selection = point_selection.map(|p| p.to_display_point(map));
111 let mut range = display_selection.range();
112 let mut head = display_selection.head();
113 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
114 ..map.next_line_boundary(point_selection.end).1.row();
115
116 // vim visual line mode
117 if line_mode {
118 let point_range = map.expand_to_line(point_selection.range());
119 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
120 }
121
122 // any vim visual mode (including line mode)
123 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
124 && !range.is_empty()
125 && !selection.reversed
126 {
127 if head.column() > 0 {
128 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
129 } else if head.row().0 > 0 && head != map.max_point() {
130 head = map.clip_point(
131 DisplayPoint::new(
132 head.row().previous_row(),
133 map.line_len(head.row().previous_row()),
134 ),
135 Bias::Left,
136 );
137 // updating range.end is a no-op unless you're cursor is
138 // on the newline containing a multi-buffer divider
139 // in which case the clip_point may have moved the head up
140 // an additional row.
141 range.end = DisplayPoint::new(head.row().next_row(), 0);
142 active_rows.end = head.row();
143 }
144 }
145
146 Self {
147 head,
148 cursor_shape,
149 is_newest,
150 is_local,
151 range,
152 active_rows,
153 user_name,
154 }
155 }
156}
157
158pub struct EditorElement {
159 editor: Entity<Editor>,
160 style: EditorStyle,
161}
162
163type DisplayRowDelta = u32;
164
165impl EditorElement {
166 pub(crate) const SCROLLBAR_WIDTH: Pixels = px(15.);
167
168 pub fn new(editor: &Entity<Editor>, style: EditorStyle) -> Self {
169 Self {
170 editor: editor.clone(),
171 style,
172 }
173 }
174
175 fn register_actions(&self, window: &mut Window, cx: &mut App) {
176 let editor = &self.editor;
177 editor.update(cx, |editor, cx| {
178 for action in editor.editor_actions.borrow().values() {
179 (action)(window, cx)
180 }
181 });
182
183 crate::rust_analyzer_ext::apply_related_actions(editor, window, cx);
184 crate::clangd_ext::apply_related_actions(editor, window, cx);
185
186 register_action(editor, window, Editor::open_context_menu);
187 register_action(editor, window, Editor::move_left);
188 register_action(editor, window, Editor::move_right);
189 register_action(editor, window, Editor::move_down);
190 register_action(editor, window, Editor::move_down_by_lines);
191 register_action(editor, window, Editor::select_down_by_lines);
192 register_action(editor, window, Editor::move_up);
193 register_action(editor, window, Editor::move_up_by_lines);
194 register_action(editor, window, Editor::select_up_by_lines);
195 register_action(editor, window, Editor::select_page_down);
196 register_action(editor, window, Editor::select_page_up);
197 register_action(editor, window, Editor::cancel);
198 register_action(editor, window, Editor::newline);
199 register_action(editor, window, Editor::newline_above);
200 register_action(editor, window, Editor::newline_below);
201 register_action(editor, window, Editor::backspace);
202 register_action(editor, window, Editor::delete);
203 register_action(editor, window, Editor::tab);
204 register_action(editor, window, Editor::backtab);
205 register_action(editor, window, Editor::indent);
206 register_action(editor, window, Editor::outdent);
207 register_action(editor, window, Editor::autoindent);
208 register_action(editor, window, Editor::delete_line);
209 register_action(editor, window, Editor::join_lines);
210 register_action(editor, window, Editor::sort_lines_case_sensitive);
211 register_action(editor, window, Editor::sort_lines_case_insensitive);
212 register_action(editor, window, Editor::reverse_lines);
213 register_action(editor, window, Editor::shuffle_lines);
214 register_action(editor, window, Editor::convert_to_upper_case);
215 register_action(editor, window, Editor::convert_to_lower_case);
216 register_action(editor, window, Editor::convert_to_title_case);
217 register_action(editor, window, Editor::convert_to_snake_case);
218 register_action(editor, window, Editor::convert_to_kebab_case);
219 register_action(editor, window, Editor::convert_to_upper_camel_case);
220 register_action(editor, window, Editor::convert_to_lower_camel_case);
221 register_action(editor, window, Editor::convert_to_opposite_case);
222 register_action(editor, window, Editor::convert_to_rot13);
223 register_action(editor, window, Editor::convert_to_rot47);
224 register_action(editor, window, Editor::delete_to_previous_word_start);
225 register_action(editor, window, Editor::delete_to_previous_subword_start);
226 register_action(editor, window, Editor::delete_to_next_word_end);
227 register_action(editor, window, Editor::delete_to_next_subword_end);
228 register_action(editor, window, Editor::delete_to_beginning_of_line);
229 register_action(editor, window, Editor::delete_to_end_of_line);
230 register_action(editor, window, Editor::cut_to_end_of_line);
231 register_action(editor, window, Editor::duplicate_line_up);
232 register_action(editor, window, Editor::duplicate_line_down);
233 register_action(editor, window, Editor::duplicate_selection);
234 register_action(editor, window, Editor::move_line_up);
235 register_action(editor, window, Editor::move_line_down);
236 register_action(editor, window, Editor::transpose);
237 register_action(editor, window, Editor::rewrap);
238 register_action(editor, window, Editor::cut);
239 register_action(editor, window, Editor::kill_ring_cut);
240 register_action(editor, window, Editor::kill_ring_yank);
241 register_action(editor, window, Editor::copy);
242 register_action(editor, window, Editor::copy_and_trim);
243 register_action(editor, window, Editor::paste);
244 register_action(editor, window, Editor::undo);
245 register_action(editor, window, Editor::redo);
246 register_action(editor, window, Editor::move_page_up);
247 register_action(editor, window, Editor::move_page_down);
248 register_action(editor, window, Editor::next_screen);
249 register_action(editor, window, Editor::scroll_cursor_top);
250 register_action(editor, window, Editor::scroll_cursor_center);
251 register_action(editor, window, Editor::scroll_cursor_bottom);
252 register_action(editor, window, Editor::scroll_cursor_center_top_bottom);
253 register_action(editor, window, |editor, _: &LineDown, window, cx| {
254 editor.scroll_screen(&ScrollAmount::Line(1.), window, cx)
255 });
256 register_action(editor, window, |editor, _: &LineUp, window, cx| {
257 editor.scroll_screen(&ScrollAmount::Line(-1.), window, cx)
258 });
259 register_action(editor, window, |editor, _: &HalfPageDown, window, cx| {
260 editor.scroll_screen(&ScrollAmount::Page(0.5), window, cx)
261 });
262 register_action(
263 editor,
264 window,
265 |editor, HandleInput(text): &HandleInput, window, cx| {
266 if text.is_empty() {
267 return;
268 }
269 editor.handle_input(text, window, cx);
270 },
271 );
272 register_action(editor, window, |editor, _: &HalfPageUp, window, cx| {
273 editor.scroll_screen(&ScrollAmount::Page(-0.5), window, cx)
274 });
275 register_action(editor, window, |editor, _: &PageDown, window, cx| {
276 editor.scroll_screen(&ScrollAmount::Page(1.), window, cx)
277 });
278 register_action(editor, window, |editor, _: &PageUp, window, cx| {
279 editor.scroll_screen(&ScrollAmount::Page(-1.), window, cx)
280 });
281 register_action(editor, window, Editor::move_to_previous_word_start);
282 register_action(editor, window, Editor::move_to_previous_subword_start);
283 register_action(editor, window, Editor::move_to_next_word_end);
284 register_action(editor, window, Editor::move_to_next_subword_end);
285 register_action(editor, window, Editor::move_to_beginning_of_line);
286 register_action(editor, window, Editor::move_to_end_of_line);
287 register_action(editor, window, Editor::move_to_start_of_paragraph);
288 register_action(editor, window, Editor::move_to_end_of_paragraph);
289 register_action(editor, window, Editor::move_to_beginning);
290 register_action(editor, window, Editor::move_to_end);
291 register_action(editor, window, Editor::move_to_start_of_excerpt);
292 register_action(editor, window, Editor::move_to_start_of_next_excerpt);
293 register_action(editor, window, Editor::move_to_end_of_excerpt);
294 register_action(editor, window, Editor::move_to_end_of_previous_excerpt);
295 register_action(editor, window, Editor::select_up);
296 register_action(editor, window, Editor::select_down);
297 register_action(editor, window, Editor::select_left);
298 register_action(editor, window, Editor::select_right);
299 register_action(editor, window, Editor::select_to_previous_word_start);
300 register_action(editor, window, Editor::select_to_previous_subword_start);
301 register_action(editor, window, Editor::select_to_next_word_end);
302 register_action(editor, window, Editor::select_to_next_subword_end);
303 register_action(editor, window, Editor::select_to_beginning_of_line);
304 register_action(editor, window, Editor::select_to_end_of_line);
305 register_action(editor, window, Editor::select_to_start_of_paragraph);
306 register_action(editor, window, Editor::select_to_end_of_paragraph);
307 register_action(editor, window, Editor::select_to_start_of_excerpt);
308 register_action(editor, window, Editor::select_to_start_of_next_excerpt);
309 register_action(editor, window, Editor::select_to_end_of_excerpt);
310 register_action(editor, window, Editor::select_to_end_of_previous_excerpt);
311 register_action(editor, window, Editor::select_to_beginning);
312 register_action(editor, window, Editor::select_to_end);
313 register_action(editor, window, Editor::select_all);
314 register_action(editor, window, |editor, action, window, cx| {
315 editor.select_all_matches(action, window, cx).log_err();
316 });
317 register_action(editor, window, Editor::select_line);
318 register_action(editor, window, Editor::split_selection_into_lines);
319 register_action(editor, window, Editor::add_selection_above);
320 register_action(editor, window, Editor::add_selection_below);
321 register_action(editor, window, |editor, action, window, cx| {
322 editor.select_next(action, window, cx).log_err();
323 });
324 register_action(editor, window, |editor, action, window, cx| {
325 editor.select_previous(action, window, cx).log_err();
326 });
327 register_action(editor, window, Editor::toggle_comments);
328 register_action(editor, window, Editor::select_larger_syntax_node);
329 register_action(editor, window, Editor::select_smaller_syntax_node);
330 register_action(editor, window, Editor::select_enclosing_symbol);
331 register_action(editor, window, Editor::move_to_enclosing_bracket);
332 register_action(editor, window, Editor::undo_selection);
333 register_action(editor, window, Editor::redo_selection);
334 if !editor.read(cx).is_singleton(cx) {
335 register_action(editor, window, Editor::expand_excerpts);
336 register_action(editor, window, Editor::expand_excerpts_up);
337 register_action(editor, window, Editor::expand_excerpts_down);
338 }
339 register_action(editor, window, Editor::go_to_diagnostic);
340 register_action(editor, window, Editor::go_to_prev_diagnostic);
341 register_action(editor, window, Editor::go_to_next_hunk);
342 register_action(editor, window, Editor::go_to_prev_hunk);
343 register_action(editor, window, |editor, action, window, cx| {
344 editor
345 .go_to_definition(action, window, cx)
346 .detach_and_log_err(cx);
347 });
348 register_action(editor, window, |editor, action, window, cx| {
349 editor
350 .go_to_definition_split(action, window, cx)
351 .detach_and_log_err(cx);
352 });
353 register_action(editor, window, |editor, action, window, cx| {
354 editor
355 .go_to_declaration(action, window, cx)
356 .detach_and_log_err(cx);
357 });
358 register_action(editor, window, |editor, action, window, cx| {
359 editor
360 .go_to_declaration_split(action, window, cx)
361 .detach_and_log_err(cx);
362 });
363 register_action(editor, window, |editor, action, window, cx| {
364 editor
365 .go_to_implementation(action, window, cx)
366 .detach_and_log_err(cx);
367 });
368 register_action(editor, window, |editor, action, window, cx| {
369 editor
370 .go_to_implementation_split(action, window, cx)
371 .detach_and_log_err(cx);
372 });
373 register_action(editor, window, |editor, action, window, cx| {
374 editor
375 .go_to_type_definition(action, window, cx)
376 .detach_and_log_err(cx);
377 });
378 register_action(editor, window, |editor, action, window, cx| {
379 editor
380 .go_to_type_definition_split(action, window, cx)
381 .detach_and_log_err(cx);
382 });
383 register_action(editor, window, Editor::open_url);
384 register_action(editor, window, Editor::open_selected_filename);
385 register_action(editor, window, Editor::fold);
386 register_action(editor, window, Editor::fold_at_level);
387 register_action(editor, window, Editor::fold_all);
388 register_action(editor, window, Editor::fold_function_bodies);
389 register_action(editor, window, Editor::fold_at);
390 register_action(editor, window, Editor::fold_recursive);
391 register_action(editor, window, Editor::toggle_fold);
392 register_action(editor, window, Editor::toggle_fold_recursive);
393 register_action(editor, window, Editor::unfold_lines);
394 register_action(editor, window, Editor::unfold_recursive);
395 register_action(editor, window, Editor::unfold_all);
396 register_action(editor, window, Editor::unfold_at);
397 register_action(editor, window, Editor::fold_selected_ranges);
398 register_action(editor, window, Editor::set_mark);
399 register_action(editor, window, Editor::swap_selection_ends);
400 register_action(editor, window, Editor::show_completions);
401 register_action(editor, window, Editor::show_word_completions);
402 register_action(editor, window, Editor::toggle_code_actions);
403 register_action(editor, window, Editor::open_excerpts);
404 register_action(editor, window, Editor::open_excerpts_in_split);
405 register_action(editor, window, Editor::open_proposed_changes_editor);
406 register_action(editor, window, Editor::toggle_soft_wrap);
407 register_action(editor, window, Editor::toggle_tab_bar);
408 register_action(editor, window, Editor::toggle_line_numbers);
409 register_action(editor, window, Editor::toggle_relative_line_numbers);
410 register_action(editor, window, Editor::toggle_indent_guides);
411 register_action(editor, window, Editor::toggle_inlay_hints);
412 register_action(editor, window, Editor::toggle_edit_predictions);
413 register_action(editor, window, Editor::toggle_inline_diagnostics);
414 register_action(editor, window, hover_popover::hover);
415 register_action(editor, window, Editor::reveal_in_finder);
416 register_action(editor, window, Editor::copy_path);
417 register_action(editor, window, Editor::copy_relative_path);
418 register_action(editor, window, Editor::copy_file_name);
419 register_action(editor, window, Editor::copy_file_name_without_extension);
420 register_action(editor, window, Editor::copy_highlight_json);
421 register_action(editor, window, Editor::copy_permalink_to_line);
422 register_action(editor, window, Editor::open_permalink_to_line);
423 register_action(editor, window, Editor::copy_file_location);
424 register_action(editor, window, Editor::toggle_git_blame);
425 register_action(editor, window, Editor::toggle_git_blame_inline);
426 register_action(editor, window, Editor::open_git_blame_commit);
427 register_action(editor, window, Editor::toggle_selected_diff_hunks);
428 register_action(editor, window, Editor::toggle_staged_selected_diff_hunks);
429 register_action(editor, window, Editor::stage_and_next);
430 register_action(editor, window, Editor::unstage_and_next);
431 register_action(editor, window, Editor::expand_all_diff_hunks);
432
433 register_action(editor, window, |editor, action, window, cx| {
434 if let Some(task) = editor.format(action, window, cx) {
435 task.detach_and_notify_err(window, cx);
436 } else {
437 cx.propagate();
438 }
439 });
440 register_action(editor, window, |editor, action, window, cx| {
441 if let Some(task) = editor.format_selections(action, window, cx) {
442 task.detach_and_notify_err(window, cx);
443 } else {
444 cx.propagate();
445 }
446 });
447 register_action(editor, window, |editor, action, window, cx| {
448 if let Some(task) = editor.organize_imports(action, window, cx) {
449 task.detach_and_notify_err(window, cx);
450 } else {
451 cx.propagate();
452 }
453 });
454 register_action(editor, window, Editor::restart_language_server);
455 register_action(editor, window, Editor::show_character_palette);
456 register_action(editor, window, |editor, action, window, cx| {
457 if let Some(task) = editor.confirm_completion(action, window, cx) {
458 task.detach_and_notify_err(window, cx);
459 } else {
460 cx.propagate();
461 }
462 });
463 register_action(editor, window, |editor, action, window, cx| {
464 if let Some(task) = editor.compose_completion(action, window, cx) {
465 task.detach_and_notify_err(window, cx);
466 } else {
467 cx.propagate();
468 }
469 });
470 register_action(editor, window, |editor, action, window, cx| {
471 if let Some(task) = editor.confirm_code_action(action, window, cx) {
472 task.detach_and_notify_err(window, cx);
473 } else {
474 cx.propagate();
475 }
476 });
477 register_action(editor, window, |editor, action, window, cx| {
478 if let Some(task) = editor.rename(action, window, cx) {
479 task.detach_and_notify_err(window, cx);
480 } else {
481 cx.propagate();
482 }
483 });
484 register_action(editor, window, |editor, action, window, cx| {
485 if let Some(task) = editor.confirm_rename(action, window, cx) {
486 task.detach_and_notify_err(window, cx);
487 } else {
488 cx.propagate();
489 }
490 });
491 register_action(editor, window, |editor, action, window, cx| {
492 if let Some(task) = editor.find_all_references(action, window, cx) {
493 task.detach_and_log_err(cx);
494 } else {
495 cx.propagate();
496 }
497 });
498 register_action(editor, window, Editor::show_signature_help);
499 register_action(editor, window, Editor::next_edit_prediction);
500 register_action(editor, window, Editor::previous_edit_prediction);
501 register_action(editor, window, Editor::show_inline_completion);
502 register_action(editor, window, Editor::context_menu_first);
503 register_action(editor, window, Editor::context_menu_prev);
504 register_action(editor, window, Editor::context_menu_next);
505 register_action(editor, window, Editor::context_menu_last);
506 register_action(editor, window, Editor::display_cursor_names);
507 register_action(editor, window, Editor::unique_lines_case_insensitive);
508 register_action(editor, window, Editor::unique_lines_case_sensitive);
509 register_action(editor, window, Editor::accept_partial_inline_completion);
510 register_action(editor, window, Editor::accept_edit_prediction);
511 register_action(editor, window, Editor::restore_file);
512 register_action(editor, window, Editor::git_restore);
513 register_action(editor, window, Editor::apply_all_diff_hunks);
514 register_action(editor, window, Editor::apply_selected_diff_hunks);
515 register_action(editor, window, Editor::open_active_item_in_terminal);
516 register_action(editor, window, Editor::reload_file);
517 register_action(editor, window, Editor::spawn_nearest_task);
518 register_action(editor, window, Editor::insert_uuid_v4);
519 register_action(editor, window, Editor::insert_uuid_v7);
520 register_action(editor, window, Editor::open_selections_in_multibuffer);
521 if cx.has_flag::<Debugger>() {
522 register_action(editor, window, Editor::toggle_breakpoint);
523 register_action(editor, window, Editor::edit_log_breakpoint);
524 register_action(editor, window, Editor::enable_breakpoint);
525 register_action(editor, window, Editor::disable_breakpoint);
526 }
527 }
528
529 fn register_key_listeners(&self, window: &mut Window, _: &mut App, layout: &EditorLayout) {
530 let position_map = layout.position_map.clone();
531 window.on_key_event({
532 let editor = self.editor.clone();
533 move |event: &ModifiersChangedEvent, phase, window, cx| {
534 if phase != DispatchPhase::Bubble {
535 return;
536 }
537 editor.update(cx, |editor, cx| {
538 let inlay_hint_settings = inlay_hint_settings(
539 editor.selections.newest_anchor().head(),
540 &editor.buffer.read(cx).snapshot(cx),
541 cx,
542 );
543
544 if let Some(inlay_modifiers) = inlay_hint_settings
545 .toggle_on_modifiers_press
546 .as_ref()
547 .filter(|modifiers| modifiers.modified())
548 {
549 editor.refresh_inlay_hints(
550 InlayHintRefreshReason::ModifiersChanged(
551 inlay_modifiers == &event.modifiers,
552 ),
553 cx,
554 );
555 }
556
557 if editor.hover_state.focused(window, cx) {
558 return;
559 }
560
561 editor.handle_modifiers_changed(event.modifiers, &position_map, window, cx);
562 })
563 }
564 });
565 }
566
567 fn mouse_left_down(
568 editor: &mut Editor,
569 event: &MouseDownEvent,
570 hovered_hunk: Option<Range<Anchor>>,
571 position_map: &PositionMap,
572 line_numbers: &HashMap<MultiBufferRow, LineNumberLayout>,
573 window: &mut Window,
574 cx: &mut Context<Editor>,
575 ) {
576 if window.default_prevented() {
577 return;
578 }
579
580 let text_hitbox = &position_map.text_hitbox;
581 let gutter_hitbox = &position_map.gutter_hitbox;
582 let mut click_count = event.click_count;
583 let mut modifiers = event.modifiers;
584
585 if let Some(hovered_hunk) = hovered_hunk {
586 editor.toggle_single_diff_hunk(hovered_hunk, cx);
587 cx.notify();
588 return;
589 } else if gutter_hitbox.is_hovered(window) {
590 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
591 } else if !text_hitbox.is_hovered(window) {
592 return;
593 }
594
595 let is_singleton = editor.buffer().read(cx).is_singleton();
596
597 if click_count == 2 && !is_singleton {
598 match EditorSettings::get_global(cx).double_click_in_multibuffer {
599 DoubleClickInMultibuffer::Select => {
600 // do nothing special on double click, all selection logic is below
601 }
602 DoubleClickInMultibuffer::Open => {
603 if modifiers.alt {
604 // if double click is made with alt, pretend it's a regular double click without opening and alt,
605 // and run the selection logic.
606 modifiers.alt = false;
607 } else {
608 let scroll_position_row =
609 position_map.scroll_pixel_position.y / position_map.line_height;
610 let display_row = (((event.position - gutter_hitbox.bounds.origin).y
611 + position_map.scroll_pixel_position.y)
612 / position_map.line_height)
613 as u32;
614 let multi_buffer_row = position_map
615 .snapshot
616 .display_point_to_point(
617 DisplayPoint::new(DisplayRow(display_row), 0),
618 Bias::Right,
619 )
620 .row;
621 let line_offset_from_top = display_row - scroll_position_row as u32;
622 // if double click is made without alt, open the corresponding excerp
623 editor.open_excerpts_common(
624 Some(JumpData::MultiBufferRow {
625 row: MultiBufferRow(multi_buffer_row),
626 line_offset_from_top,
627 }),
628 false,
629 window,
630 cx,
631 );
632 return;
633 }
634 }
635 }
636 }
637
638 let point_for_position = position_map.point_for_position(event.position);
639 let position = point_for_position.previous_valid;
640 if modifiers == COLUMNAR_SELECTION_MODIFIERS {
641 editor.select(
642 SelectPhase::BeginColumnar {
643 position,
644 reset: false,
645 goal_column: point_for_position.exact_unclipped.column(),
646 },
647 window,
648 cx,
649 );
650 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
651 {
652 editor.select(
653 SelectPhase::Extend {
654 position,
655 click_count,
656 },
657 window,
658 cx,
659 );
660 } else {
661 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
662 let multi_cursor_modifier = match multi_cursor_setting {
663 MultiCursorModifier::Alt => modifiers.alt,
664 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
665 };
666 editor.select(
667 SelectPhase::Begin {
668 position,
669 add: multi_cursor_modifier,
670 click_count,
671 },
672 window,
673 cx,
674 );
675 }
676 cx.stop_propagation();
677
678 if !is_singleton {
679 let display_row = (((event.position - gutter_hitbox.bounds.origin).y
680 + position_map.scroll_pixel_position.y)
681 / position_map.line_height) as u32;
682 let multi_buffer_row = position_map
683 .snapshot
684 .display_point_to_point(DisplayPoint::new(DisplayRow(display_row), 0), Bias::Right)
685 .row;
686 if line_numbers
687 .get(&MultiBufferRow(multi_buffer_row))
688 .and_then(|line_number| line_number.hitbox.as_ref())
689 .is_some_and(|hitbox| hitbox.contains(&event.position))
690 {
691 let scroll_position_row =
692 position_map.scroll_pixel_position.y / position_map.line_height;
693 let line_offset_from_top = display_row - scroll_position_row as u32;
694
695 editor.open_excerpts_common(
696 Some(JumpData::MultiBufferRow {
697 row: MultiBufferRow(multi_buffer_row),
698 line_offset_from_top,
699 }),
700 modifiers.alt,
701 window,
702 cx,
703 );
704 cx.stop_propagation();
705 }
706 }
707 }
708
709 fn mouse_right_down(
710 editor: &mut Editor,
711 event: &MouseDownEvent,
712 position_map: &PositionMap,
713 window: &mut Window,
714 cx: &mut Context<Editor>,
715 ) {
716 if position_map.gutter_hitbox.is_hovered(window) {
717 let gutter_right_padding = editor.gutter_dimensions.right_padding;
718 let hitbox = &position_map.gutter_hitbox;
719
720 if event.position.x <= hitbox.bounds.right() - gutter_right_padding {
721 let point_for_position = position_map.point_for_position(event.position);
722 editor.set_breakpoint_context_menu(
723 point_for_position.previous_valid.row(),
724 None,
725 event.position,
726 window,
727 cx,
728 );
729 }
730 return;
731 }
732
733 if !position_map.text_hitbox.is_hovered(window) {
734 return;
735 }
736
737 let point_for_position = position_map.point_for_position(event.position);
738 mouse_context_menu::deploy_context_menu(
739 editor,
740 Some(event.position),
741 point_for_position.previous_valid,
742 window,
743 cx,
744 );
745 cx.stop_propagation();
746 }
747
748 fn mouse_middle_down(
749 editor: &mut Editor,
750 event: &MouseDownEvent,
751 position_map: &PositionMap,
752 window: &mut Window,
753 cx: &mut Context<Editor>,
754 ) {
755 if !position_map.text_hitbox.is_hovered(window) || window.default_prevented() {
756 return;
757 }
758
759 let point_for_position = position_map.point_for_position(event.position);
760 let position = point_for_position.previous_valid;
761
762 editor.select(
763 SelectPhase::BeginColumnar {
764 position,
765 reset: true,
766 goal_column: point_for_position.exact_unclipped.column(),
767 },
768 window,
769 cx,
770 );
771 }
772
773 fn mouse_up(
774 editor: &mut Editor,
775 event: &MouseUpEvent,
776 position_map: &PositionMap,
777 window: &mut Window,
778 cx: &mut Context<Editor>,
779 ) {
780 let text_hitbox = &position_map.text_hitbox;
781 let end_selection = editor.has_pending_selection();
782 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
783
784 if end_selection {
785 editor.select(SelectPhase::End, window, cx);
786 }
787
788 if end_selection && pending_nonempty_selections {
789 cx.stop_propagation();
790 } else if cfg!(any(target_os = "linux", target_os = "freebsd"))
791 && event.button == MouseButton::Middle
792 {
793 if !text_hitbox.is_hovered(window) || editor.read_only(cx) {
794 return;
795 }
796
797 #[cfg(any(target_os = "linux", target_os = "freebsd"))]
798 if EditorSettings::get_global(cx).middle_click_paste {
799 if let Some(text) = cx.read_from_primary().and_then(|item| item.text()) {
800 let point_for_position = position_map.point_for_position(event.position);
801 let position = point_for_position.previous_valid;
802
803 editor.select(
804 SelectPhase::Begin {
805 position,
806 add: false,
807 click_count: 1,
808 },
809 window,
810 cx,
811 );
812 editor.insert(&text, window, cx);
813 }
814 cx.stop_propagation()
815 }
816 }
817 }
818
819 fn click(
820 editor: &mut Editor,
821 event: &ClickEvent,
822 position_map: &PositionMap,
823 window: &mut Window,
824 cx: &mut Context<Editor>,
825 ) {
826 let text_hitbox = &position_map.text_hitbox;
827 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
828
829 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
830 let multi_cursor_modifier = match multi_cursor_setting {
831 MultiCursorModifier::Alt => event.modifiers().secondary(),
832 MultiCursorModifier::CmdOrCtrl => event.modifiers().alt,
833 };
834
835 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(window) {
836 let point = position_map.point_for_position(event.up.position);
837 editor.handle_click_hovered_link(point, event.modifiers(), window, cx);
838
839 cx.stop_propagation();
840 }
841 }
842
843 fn mouse_dragged(
844 editor: &mut Editor,
845 event: &MouseMoveEvent,
846 position_map: &PositionMap,
847 window: &mut Window,
848 cx: &mut Context<Editor>,
849 ) {
850 if !editor.has_pending_selection() {
851 return;
852 }
853
854 let text_bounds = position_map.text_hitbox.bounds;
855 let point_for_position = position_map.point_for_position(event.position);
856 let mut scroll_delta = gpui::Point::<f32>::default();
857 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
858 let top = text_bounds.origin.y + vertical_margin;
859 let bottom = text_bounds.bottom_left().y - vertical_margin;
860 if event.position.y < top {
861 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
862 }
863 if event.position.y > bottom {
864 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
865 }
866
867 // We need horizontal width of text
868 let style = editor.style.clone().unwrap_or_default();
869 let font_id = window.text_system().resolve_font(&style.text.font());
870 let font_size = style.text.font_size.to_pixels(window.rem_size());
871 let em_width = window.text_system().em_width(font_id, font_size).unwrap();
872
873 let scroll_margin_x = EditorSettings::get_global(cx).horizontal_scroll_margin;
874
875 let scroll_space: Pixels = scroll_margin_x * em_width;
876
877 let left = text_bounds.origin.x + scroll_space;
878 let right = text_bounds.top_right().x - scroll_space;
879
880 if event.position.x < left {
881 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
882 }
883 if event.position.x > right {
884 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
885 }
886
887 editor.select(
888 SelectPhase::Update {
889 position: point_for_position.previous_valid,
890 goal_column: point_for_position.exact_unclipped.column(),
891 scroll_delta,
892 },
893 window,
894 cx,
895 );
896 }
897
898 fn mouse_moved(
899 editor: &mut Editor,
900 event: &MouseMoveEvent,
901 position_map: &PositionMap,
902 window: &mut Window,
903 cx: &mut Context<Editor>,
904 ) {
905 let text_hitbox = &position_map.text_hitbox;
906 let gutter_hitbox = &position_map.gutter_hitbox;
907 let modifiers = event.modifiers;
908 let gutter_hovered = gutter_hitbox.is_hovered(window);
909 editor.set_gutter_hovered(gutter_hovered, cx);
910 editor.mouse_cursor_hidden = false;
911
912 if gutter_hovered {
913 let new_point = position_map
914 .point_for_position(event.position)
915 .previous_valid;
916 let buffer_anchor = position_map
917 .snapshot
918 .display_point_to_anchor(new_point, Bias::Left);
919
920 if position_map
921 .snapshot
922 .buffer_snapshot
923 .buffer_for_excerpt(buffer_anchor.excerpt_id)
924 .is_some_and(|buffer| buffer.file().is_some())
925 {
926 let was_hovered = editor.gutter_breakpoint_indicator.0.is_some();
927 let is_visible = editor
928 .gutter_breakpoint_indicator
929 .0
930 .map_or(false, |(_, is_active)| is_active);
931 editor.gutter_breakpoint_indicator.0 = Some((new_point, is_visible));
932
933 editor.gutter_breakpoint_indicator.1.get_or_insert_with(|| {
934 cx.spawn(async move |this, cx| {
935 if !was_hovered {
936 cx.background_executor()
937 .timer(Duration::from_millis(200))
938 .await;
939 }
940
941 this.update(cx, |this, cx| {
942 if let Some((_, is_active)) =
943 this.gutter_breakpoint_indicator.0.as_mut()
944 {
945 *is_active = true;
946 }
947
948 cx.notify();
949 })
950 .ok();
951 })
952 });
953 } else {
954 editor.gutter_breakpoint_indicator = (None, None);
955 }
956 } else {
957 editor.gutter_breakpoint_indicator = (None, None);
958 }
959
960 cx.notify();
961
962 // Don't trigger hover popover if mouse is hovering over context menu
963 if text_hitbox.is_hovered(window) {
964 let point_for_position = position_map.point_for_position(event.position);
965
966 editor.update_hovered_link(
967 point_for_position,
968 &position_map.snapshot,
969 modifiers,
970 window,
971 cx,
972 );
973
974 if let Some(point) = point_for_position.as_valid() {
975 let anchor = position_map
976 .snapshot
977 .buffer_snapshot
978 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
979 hover_at(editor, Some(anchor), window, cx);
980 Self::update_visible_cursor(editor, point, position_map, window, cx);
981 } else {
982 hover_at(editor, None, window, cx);
983 }
984 } else {
985 editor.hide_hovered_link(cx);
986 hover_at(editor, None, window, cx);
987 if gutter_hovered {
988 cx.stop_propagation();
989 }
990 }
991 }
992
993 fn update_visible_cursor(
994 editor: &mut Editor,
995 point: DisplayPoint,
996 position_map: &PositionMap,
997 window: &mut Window,
998 cx: &mut Context<Editor>,
999 ) {
1000 let snapshot = &position_map.snapshot;
1001 let Some(hub) = editor.collaboration_hub() else {
1002 return;
1003 };
1004 let start = snapshot.display_snapshot.clip_point(
1005 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
1006 Bias::Left,
1007 );
1008 let end = snapshot.display_snapshot.clip_point(
1009 DisplayPoint::new(
1010 point.row(),
1011 (point.column() + 1).min(snapshot.line_len(point.row())),
1012 ),
1013 Bias::Right,
1014 );
1015
1016 let range = snapshot
1017 .buffer_snapshot
1018 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
1019 ..snapshot
1020 .buffer_snapshot
1021 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
1022
1023 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
1024 return;
1025 };
1026 let key = crate::HoveredCursor {
1027 replica_id: selection.replica_id,
1028 selection_id: selection.selection.id,
1029 };
1030 editor.hovered_cursors.insert(
1031 key.clone(),
1032 cx.spawn_in(window, async move |editor, cx| {
1033 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
1034 editor
1035 .update(cx, |editor, cx| {
1036 editor.hovered_cursors.remove(&key);
1037 cx.notify();
1038 })
1039 .ok();
1040 }),
1041 );
1042 cx.notify()
1043 }
1044
1045 fn layout_selections(
1046 &self,
1047 start_anchor: Anchor,
1048 end_anchor: Anchor,
1049 local_selections: &[Selection<Point>],
1050 snapshot: &EditorSnapshot,
1051 start_row: DisplayRow,
1052 end_row: DisplayRow,
1053 window: &mut Window,
1054 cx: &mut App,
1055 ) -> (
1056 Vec<(PlayerColor, Vec<SelectionLayout>)>,
1057 BTreeMap<DisplayRow, LineHighlightSpec>,
1058 Option<DisplayPoint>,
1059 ) {
1060 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1061 let mut active_rows = BTreeMap::new();
1062 let mut newest_selection_head = None;
1063 self.editor.update(cx, |editor, cx| {
1064 if editor.show_local_selections {
1065 let mut layouts = Vec::new();
1066 let newest = editor.selections.newest(cx);
1067 for selection in local_selections.iter().cloned() {
1068 let is_empty = selection.start == selection.end;
1069 let is_newest = selection == newest;
1070
1071 let layout = SelectionLayout::new(
1072 selection,
1073 editor.selections.line_mode,
1074 editor.cursor_shape,
1075 &snapshot.display_snapshot,
1076 is_newest,
1077 editor.leader_peer_id.is_none(),
1078 None,
1079 );
1080 if is_newest {
1081 newest_selection_head = Some(layout.head);
1082 }
1083
1084 for row in cmp::max(layout.active_rows.start.0, start_row.0)
1085 ..=cmp::min(layout.active_rows.end.0, end_row.0)
1086 {
1087 let contains_non_empty_selection = active_rows
1088 .entry(DisplayRow(row))
1089 .or_insert_with(LineHighlightSpec::default);
1090 contains_non_empty_selection.selection |= !is_empty;
1091 }
1092 layouts.push(layout);
1093 }
1094
1095 let player = editor.current_user_player_color(cx);
1096 selections.push((player, layouts));
1097 }
1098
1099 if let Some(collaboration_hub) = &editor.collaboration_hub {
1100 // When following someone, render the local selections in their color.
1101 if let Some(leader_id) = editor.leader_peer_id {
1102 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id)
1103 {
1104 if let Some(participant_index) = collaboration_hub
1105 .user_participant_indices(cx)
1106 .get(&collaborator.user_id)
1107 {
1108 if let Some((local_selection_style, _)) = selections.first_mut() {
1109 *local_selection_style = cx
1110 .theme()
1111 .players()
1112 .color_for_participant(participant_index.0);
1113 }
1114 }
1115 }
1116 }
1117
1118 let mut remote_selections = HashMap::default();
1119 for selection in snapshot.remote_selections_in_range(
1120 &(start_anchor..end_anchor),
1121 collaboration_hub.as_ref(),
1122 cx,
1123 ) {
1124 let selection_style =
1125 Self::get_participant_color(selection.participant_index, cx);
1126
1127 // Don't re-render the leader's selections, since the local selections
1128 // match theirs.
1129 if Some(selection.peer_id) == editor.leader_peer_id {
1130 continue;
1131 }
1132 let key = HoveredCursor {
1133 replica_id: selection.replica_id,
1134 selection_id: selection.selection.id,
1135 };
1136
1137 let is_shown =
1138 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
1139
1140 remote_selections
1141 .entry(selection.replica_id)
1142 .or_insert((selection_style, Vec::new()))
1143 .1
1144 .push(SelectionLayout::new(
1145 selection.selection,
1146 selection.line_mode,
1147 selection.cursor_shape,
1148 &snapshot.display_snapshot,
1149 false,
1150 false,
1151 if is_shown { selection.user_name } else { None },
1152 ));
1153 }
1154
1155 selections.extend(remote_selections.into_values());
1156 } else if !editor.is_focused(window) && editor.show_cursor_when_unfocused {
1157 let layouts = snapshot
1158 .buffer_snapshot
1159 .selections_in_range(&(start_anchor..end_anchor), true)
1160 .map(move |(_, line_mode, cursor_shape, selection)| {
1161 SelectionLayout::new(
1162 selection,
1163 line_mode,
1164 cursor_shape,
1165 &snapshot.display_snapshot,
1166 false,
1167 false,
1168 None,
1169 )
1170 })
1171 .collect::<Vec<_>>();
1172 let player = editor.current_user_player_color(cx);
1173 selections.push((player, layouts));
1174 }
1175 });
1176 (selections, active_rows, newest_selection_head)
1177 }
1178
1179 fn collect_cursors(
1180 &self,
1181 snapshot: &EditorSnapshot,
1182 cx: &mut App,
1183 ) -> Vec<(DisplayPoint, Hsla)> {
1184 let editor = self.editor.read(cx);
1185 let mut cursors = Vec::new();
1186 let mut skip_local = false;
1187 let mut add_cursor = |anchor: Anchor, color| {
1188 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
1189 };
1190 // Remote cursors
1191 if let Some(collaboration_hub) = &editor.collaboration_hub {
1192 for remote_selection in snapshot.remote_selections_in_range(
1193 &(Anchor::min()..Anchor::max()),
1194 collaboration_hub.deref(),
1195 cx,
1196 ) {
1197 let color = Self::get_participant_color(remote_selection.participant_index, cx);
1198 add_cursor(remote_selection.selection.head(), color.cursor);
1199 if Some(remote_selection.peer_id) == editor.leader_peer_id {
1200 skip_local = true;
1201 }
1202 }
1203 }
1204 // Local cursors
1205 if !skip_local {
1206 let color = cx.theme().players().local().cursor;
1207 editor.selections.disjoint.iter().for_each(|selection| {
1208 add_cursor(selection.head(), color);
1209 });
1210 if let Some(ref selection) = editor.selections.pending_anchor() {
1211 add_cursor(selection.head(), color);
1212 }
1213 }
1214 cursors
1215 }
1216
1217 fn layout_visible_cursors(
1218 &self,
1219 snapshot: &EditorSnapshot,
1220 selections: &[(PlayerColor, Vec<SelectionLayout>)],
1221 block_start_rows: &HashSet<DisplayRow>,
1222 visible_display_row_range: Range<DisplayRow>,
1223 line_layouts: &[LineWithInvisibles],
1224 text_hitbox: &Hitbox,
1225 content_origin: gpui::Point<Pixels>,
1226 scroll_position: gpui::Point<f32>,
1227 scroll_pixel_position: gpui::Point<Pixels>,
1228 line_height: Pixels,
1229 em_width: Pixels,
1230 em_advance: Pixels,
1231 autoscroll_containing_element: bool,
1232 window: &mut Window,
1233 cx: &mut App,
1234 ) -> Vec<CursorLayout> {
1235 let mut autoscroll_bounds = None;
1236 let cursor_layouts = self.editor.update(cx, |editor, cx| {
1237 let mut cursors = Vec::new();
1238
1239 let show_local_cursors = editor.show_local_cursors(window, cx);
1240
1241 for (player_color, selections) in selections {
1242 for selection in selections {
1243 let cursor_position = selection.head;
1244
1245 let in_range = visible_display_row_range.contains(&cursor_position.row());
1246 if (selection.is_local && !show_local_cursors)
1247 || !in_range
1248 || block_start_rows.contains(&cursor_position.row())
1249 {
1250 continue;
1251 }
1252
1253 let cursor_row_layout = &line_layouts
1254 [cursor_position.row().minus(visible_display_row_range.start) as usize];
1255 let cursor_column = cursor_position.column() as usize;
1256
1257 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1258 let mut block_width =
1259 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1260 if block_width == Pixels::ZERO {
1261 block_width = em_advance;
1262 }
1263 let block_text = if let CursorShape::Block = selection.cursor_shape {
1264 snapshot
1265 .grapheme_at(cursor_position)
1266 .or_else(|| {
1267 if cursor_column == 0 {
1268 snapshot.placeholder_text().and_then(|s| {
1269 s.graphemes(true).next().map(|s| s.to_string().into())
1270 })
1271 } else {
1272 None
1273 }
1274 })
1275 .and_then(|text| {
1276 let len = text.len();
1277
1278 let font = cursor_row_layout
1279 .font_id_for_index(cursor_column)
1280 .and_then(|cursor_font_id| {
1281 window.text_system().get_font_for_id(cursor_font_id)
1282 })
1283 .unwrap_or(self.style.text.font());
1284
1285 // Invert the text color for the block cursor. Ensure that the text
1286 // color is opaque enough to be visible against the background color.
1287 //
1288 // 0.75 is an arbitrary threshold to determine if the background color is
1289 // opaque enough to use as a text color.
1290 //
1291 // TODO: In the future we should ensure themes have a `text_inverse` color.
1292 let color = if cx.theme().colors().editor_background.a < 0.75 {
1293 match cx.theme().appearance {
1294 Appearance::Dark => Hsla::black(),
1295 Appearance::Light => Hsla::white(),
1296 }
1297 } else {
1298 cx.theme().colors().editor_background
1299 };
1300
1301 window
1302 .text_system()
1303 .shape_line(
1304 text,
1305 cursor_row_layout.font_size,
1306 &[TextRun {
1307 len,
1308 font,
1309 color,
1310 background_color: None,
1311 strikethrough: None,
1312 underline: None,
1313 }],
1314 )
1315 .log_err()
1316 })
1317 } else {
1318 None
1319 };
1320
1321 let x = cursor_character_x - scroll_pixel_position.x;
1322 let y = (cursor_position.row().as_f32()
1323 - scroll_pixel_position.y / line_height)
1324 * line_height;
1325 if selection.is_newest {
1326 editor.pixel_position_of_newest_cursor = Some(point(
1327 text_hitbox.origin.x + x + block_width / 2.,
1328 text_hitbox.origin.y + y + line_height / 2.,
1329 ));
1330
1331 if autoscroll_containing_element {
1332 let top = text_hitbox.origin.y
1333 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1334 * line_height;
1335 let left = text_hitbox.origin.x
1336 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1337 .max(0.)
1338 * em_width;
1339
1340 let bottom = text_hitbox.origin.y
1341 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1342 * line_height;
1343 let right = text_hitbox.origin.x
1344 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1345 * em_width;
1346
1347 autoscroll_bounds =
1348 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1349 }
1350 }
1351
1352 let mut cursor = CursorLayout {
1353 color: player_color.cursor,
1354 block_width,
1355 origin: point(x, y),
1356 line_height,
1357 shape: selection.cursor_shape,
1358 block_text,
1359 cursor_name: None,
1360 };
1361 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1362 string: name,
1363 color: self.style.background,
1364 is_top_row: cursor_position.row().0 == 0,
1365 });
1366 cursor.layout(content_origin, cursor_name, window, cx);
1367 cursors.push(cursor);
1368 }
1369 }
1370
1371 cursors
1372 });
1373
1374 if let Some(bounds) = autoscroll_bounds {
1375 window.request_autoscroll(bounds);
1376 }
1377
1378 cursor_layouts
1379 }
1380
1381 fn layout_scrollbars(
1382 &self,
1383 snapshot: &EditorSnapshot,
1384 scrollbar_layout_information: ScrollbarLayoutInformation,
1385 content_offset: gpui::Point<Pixels>,
1386 scroll_position: gpui::Point<f32>,
1387 non_visible_cursors: bool,
1388 window: &mut Window,
1389 cx: &mut App,
1390 ) -> Option<EditorScrollbars> {
1391 if snapshot.mode != EditorMode::Full {
1392 return None;
1393 }
1394
1395 // If a drag took place after we started dragging the scrollbar,
1396 // cancel the scrollbar drag.
1397 if cx.has_active_drag() {
1398 self.editor.update(cx, |editor, cx| {
1399 editor.scroll_manager.reset_scrollbar_dragging_state(cx)
1400 });
1401 }
1402
1403 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1404 let show_scrollbars = self.editor.read(cx).show_scrollbars
1405 && match scrollbar_settings.show {
1406 ShowScrollbar::Auto => {
1407 let editor = self.editor.read(cx);
1408 let is_singleton = editor.is_singleton(cx);
1409 // Git
1410 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_diff_hunks())
1411 ||
1412 // Buffer Search Results
1413 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1414 ||
1415 // Selected Text Occurrences
1416 (is_singleton && scrollbar_settings.selected_text && editor.has_background_highlights::<SelectedTextHighlight>())
1417 ||
1418 // Selected Symbol Occurrences
1419 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1420 ||
1421 // Diagnostics
1422 (is_singleton && scrollbar_settings.diagnostics != ScrollbarDiagnostics::None && snapshot.buffer_snapshot.has_diagnostics())
1423 ||
1424 // Cursors out of sight
1425 non_visible_cursors
1426 ||
1427 // Scrollmanager
1428 editor.scroll_manager.scrollbars_visible()
1429 }
1430 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1431 ShowScrollbar::Always => true,
1432 ShowScrollbar::Never => return None,
1433 };
1434
1435 Some(EditorScrollbars::from_scrollbar_axes(
1436 scrollbar_settings.axes,
1437 &scrollbar_layout_information,
1438 content_offset,
1439 scroll_position,
1440 self.style.scrollbar_width,
1441 show_scrollbars,
1442 window,
1443 ))
1444 }
1445
1446 fn prepaint_crease_toggles(
1447 &self,
1448 crease_toggles: &mut [Option<AnyElement>],
1449 line_height: Pixels,
1450 gutter_dimensions: &GutterDimensions,
1451 gutter_settings: crate::editor_settings::Gutter,
1452 scroll_pixel_position: gpui::Point<Pixels>,
1453 gutter_hitbox: &Hitbox,
1454 window: &mut Window,
1455 cx: &mut App,
1456 ) {
1457 for (ix, crease_toggle) in crease_toggles.iter_mut().enumerate() {
1458 if let Some(crease_toggle) = crease_toggle {
1459 debug_assert!(gutter_settings.folds);
1460 let available_space = size(
1461 AvailableSpace::MinContent,
1462 AvailableSpace::Definite(line_height * 0.55),
1463 );
1464 let crease_toggle_size = crease_toggle.layout_as_root(available_space, window, cx);
1465
1466 let position = point(
1467 gutter_dimensions.width - gutter_dimensions.right_padding,
1468 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1469 );
1470 let centering_offset = point(
1471 (gutter_dimensions.fold_area_width() - crease_toggle_size.width) / 2.,
1472 (line_height - crease_toggle_size.height) / 2.,
1473 );
1474 let origin = gutter_hitbox.origin + position + centering_offset;
1475 crease_toggle.prepaint_as_root(origin, available_space, window, cx);
1476 }
1477 }
1478 }
1479
1480 fn prepaint_expand_toggles(
1481 &self,
1482 expand_toggles: &mut [Option<(AnyElement, gpui::Point<Pixels>)>],
1483 window: &mut Window,
1484 cx: &mut App,
1485 ) {
1486 for (expand_toggle, origin) in expand_toggles.iter_mut().flatten() {
1487 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1488 expand_toggle.layout_as_root(available_space, window, cx);
1489 expand_toggle.prepaint_as_root(*origin, available_space, window, cx);
1490 }
1491 }
1492
1493 fn prepaint_crease_trailers(
1494 &self,
1495 trailers: Vec<Option<AnyElement>>,
1496 lines: &[LineWithInvisibles],
1497 line_height: Pixels,
1498 content_origin: gpui::Point<Pixels>,
1499 scroll_pixel_position: gpui::Point<Pixels>,
1500 em_width: Pixels,
1501 window: &mut Window,
1502 cx: &mut App,
1503 ) -> Vec<Option<CreaseTrailerLayout>> {
1504 trailers
1505 .into_iter()
1506 .enumerate()
1507 .map(|(ix, element)| {
1508 let mut element = element?;
1509 let available_space = size(
1510 AvailableSpace::MinContent,
1511 AvailableSpace::Definite(line_height),
1512 );
1513 let size = element.layout_as_root(available_space, window, cx);
1514
1515 let line = &lines[ix];
1516 let padding = if line.width == Pixels::ZERO {
1517 Pixels::ZERO
1518 } else {
1519 4. * em_width
1520 };
1521 let position = point(
1522 scroll_pixel_position.x + line.width + padding,
1523 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1524 );
1525 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1526 let origin = content_origin + position + centering_offset;
1527 element.prepaint_as_root(origin, available_space, window, cx);
1528 Some(CreaseTrailerLayout {
1529 element,
1530 bounds: Bounds::new(origin, size),
1531 })
1532 })
1533 .collect()
1534 }
1535
1536 // Folds contained in a hunk are ignored apart from shrinking visual size
1537 // If a fold contains any hunks then that fold line is marked as modified
1538 fn layout_gutter_diff_hunks(
1539 &self,
1540 line_height: Pixels,
1541 gutter_hitbox: &Hitbox,
1542 display_rows: Range<DisplayRow>,
1543 snapshot: &EditorSnapshot,
1544 window: &mut Window,
1545 cx: &mut App,
1546 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1547 let folded_buffers = self.editor.read(cx).folded_buffers(cx);
1548 let mut display_hunks = snapshot
1549 .display_diff_hunks_for_rows(display_rows, folded_buffers)
1550 .map(|hunk| (hunk, None))
1551 .collect::<Vec<_>>();
1552 let git_gutter_setting = ProjectSettings::get_global(cx)
1553 .git
1554 .git_gutter
1555 .unwrap_or_default();
1556 if let GitGutterSetting::TrackedFiles = git_gutter_setting {
1557 for (hunk, hitbox) in &mut display_hunks {
1558 if matches!(hunk, DisplayDiffHunk::Unfolded { .. }) {
1559 let hunk_bounds =
1560 Self::diff_hunk_bounds(snapshot, line_height, gutter_hitbox.bounds, hunk);
1561 *hitbox = Some(window.insert_hitbox(hunk_bounds, true));
1562 }
1563 }
1564 }
1565
1566 display_hunks
1567 }
1568
1569 fn layout_inline_diagnostics(
1570 &self,
1571 line_layouts: &[LineWithInvisibles],
1572 crease_trailers: &[Option<CreaseTrailerLayout>],
1573 content_origin: gpui::Point<Pixels>,
1574 scroll_pixel_position: gpui::Point<Pixels>,
1575 inline_completion_popover_origin: Option<gpui::Point<Pixels>>,
1576 start_row: DisplayRow,
1577 end_row: DisplayRow,
1578 line_height: Pixels,
1579 em_width: Pixels,
1580 style: &EditorStyle,
1581 window: &mut Window,
1582 cx: &mut App,
1583 ) -> HashMap<DisplayRow, AnyElement> {
1584 let max_severity = ProjectSettings::get_global(cx)
1585 .diagnostics
1586 .inline
1587 .max_severity
1588 .map_or(DiagnosticSeverity::HINT, |severity| match severity {
1589 project_settings::DiagnosticSeverity::Error => DiagnosticSeverity::ERROR,
1590 project_settings::DiagnosticSeverity::Warning => DiagnosticSeverity::WARNING,
1591 project_settings::DiagnosticSeverity::Info => DiagnosticSeverity::INFORMATION,
1592 project_settings::DiagnosticSeverity::Hint => DiagnosticSeverity::HINT,
1593 });
1594
1595 let active_diagnostics_group = self
1596 .editor
1597 .read(cx)
1598 .active_diagnostics
1599 .as_ref()
1600 .map(|active_diagnostics| active_diagnostics.group_id);
1601
1602 let diagnostics_by_rows = self.editor.update(cx, |editor, cx| {
1603 let snapshot = editor.snapshot(window, cx);
1604 editor
1605 .inline_diagnostics
1606 .iter()
1607 .filter(|(_, diagnostic)| diagnostic.severity <= max_severity)
1608 .filter(|(_, diagnostic)| match active_diagnostics_group {
1609 Some(active_diagnostics_group) => {
1610 // Active diagnostics are all shown in the editor already, no need to display them inline
1611 diagnostic.group_id != active_diagnostics_group
1612 }
1613 None => true,
1614 })
1615 .map(|(point, diag)| (point.to_display_point(&snapshot), diag.clone()))
1616 .skip_while(|(point, _)| point.row() < start_row)
1617 .take_while(|(point, _)| point.row() < end_row)
1618 .fold(HashMap::default(), |mut acc, (point, diagnostic)| {
1619 acc.entry(point.row())
1620 .or_insert_with(Vec::new)
1621 .push(diagnostic);
1622 acc
1623 })
1624 });
1625
1626 if diagnostics_by_rows.is_empty() {
1627 return HashMap::default();
1628 }
1629
1630 let severity_to_color = |sev: &DiagnosticSeverity| match sev {
1631 &DiagnosticSeverity::ERROR => Color::Error,
1632 &DiagnosticSeverity::WARNING => Color::Warning,
1633 &DiagnosticSeverity::INFORMATION => Color::Info,
1634 &DiagnosticSeverity::HINT => Color::Hint,
1635 _ => Color::Error,
1636 };
1637
1638 let padding = ProjectSettings::get_global(cx).diagnostics.inline.padding as f32 * em_width;
1639 let min_x = ProjectSettings::get_global(cx)
1640 .diagnostics
1641 .inline
1642 .min_column as f32
1643 * em_width;
1644
1645 let mut elements = HashMap::default();
1646 for (row, mut diagnostics) in diagnostics_by_rows {
1647 diagnostics.sort_by_key(|diagnostic| {
1648 (
1649 diagnostic.severity,
1650 std::cmp::Reverse(diagnostic.is_primary),
1651 diagnostic.start.row,
1652 diagnostic.start.column,
1653 )
1654 });
1655
1656 let Some(diagnostic_to_render) = diagnostics
1657 .iter()
1658 .find(|diagnostic| diagnostic.is_primary)
1659 .or_else(|| diagnostics.first())
1660 else {
1661 continue;
1662 };
1663
1664 let pos_y = content_origin.y
1665 + line_height * (row.0 as f32 - scroll_pixel_position.y / line_height);
1666
1667 let window_ix = row.0.saturating_sub(start_row.0) as usize;
1668 let pos_x = {
1669 let crease_trailer_layout = &crease_trailers[window_ix];
1670 let line_layout = &line_layouts[window_ix];
1671
1672 let line_end = if let Some(crease_trailer) = crease_trailer_layout {
1673 crease_trailer.bounds.right()
1674 } else {
1675 content_origin.x - scroll_pixel_position.x + line_layout.width
1676 };
1677
1678 let padded_line = line_end + padding;
1679 let min_start = content_origin.x - scroll_pixel_position.x + min_x;
1680
1681 cmp::max(padded_line, min_start)
1682 };
1683
1684 let behind_inline_completion_popover = inline_completion_popover_origin
1685 .as_ref()
1686 .map_or(false, |inline_completion_popover_origin| {
1687 (pos_y..pos_y + line_height).contains(&inline_completion_popover_origin.y)
1688 });
1689 let opacity = if behind_inline_completion_popover {
1690 0.5
1691 } else {
1692 1.0
1693 };
1694
1695 let mut element = h_flex()
1696 .id(("diagnostic", row.0))
1697 .h(line_height)
1698 .w_full()
1699 .px_1()
1700 .rounded_xs()
1701 .opacity(opacity)
1702 .bg(severity_to_color(&diagnostic_to_render.severity)
1703 .color(cx)
1704 .opacity(0.05))
1705 .text_color(severity_to_color(&diagnostic_to_render.severity).color(cx))
1706 .text_sm()
1707 .font_family(style.text.font().family)
1708 .child(diagnostic_to_render.message.clone())
1709 .into_any();
1710
1711 element.prepaint_as_root(point(pos_x, pos_y), AvailableSpace::min_size(), window, cx);
1712
1713 elements.insert(row, element);
1714 }
1715
1716 elements
1717 }
1718
1719 fn layout_inline_blame(
1720 &self,
1721 display_row: DisplayRow,
1722 row_info: &RowInfo,
1723 line_layout: &LineWithInvisibles,
1724 crease_trailer: Option<&CreaseTrailerLayout>,
1725 em_width: Pixels,
1726 content_origin: gpui::Point<Pixels>,
1727 scroll_pixel_position: gpui::Point<Pixels>,
1728 line_height: Pixels,
1729 window: &mut Window,
1730 cx: &mut App,
1731 ) -> Option<AnyElement> {
1732 if !self
1733 .editor
1734 .update(cx, |editor, cx| editor.render_git_blame_inline(window, cx))
1735 {
1736 return None;
1737 }
1738
1739 let editor = self.editor.read(cx);
1740 let blame = editor.blame.clone()?;
1741 let padding = {
1742 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1743 const INLINE_ACCEPT_SUGGESTION_EM_WIDTHS: f32 = 14.;
1744
1745 let mut padding = INLINE_BLAME_PADDING_EM_WIDTHS;
1746
1747 if let Some(inline_completion) = editor.active_inline_completion.as_ref() {
1748 match &inline_completion.completion {
1749 InlineCompletion::Edit {
1750 display_mode: EditDisplayMode::TabAccept,
1751 ..
1752 } => padding += INLINE_ACCEPT_SUGGESTION_EM_WIDTHS,
1753 _ => {}
1754 }
1755 }
1756
1757 padding * em_width
1758 };
1759
1760 let workspace = editor.workspace()?.downgrade();
1761 let blame_entry = blame
1762 .update(cx, |blame, cx| {
1763 blame.blame_for_rows(&[*row_info], cx).next()
1764 })
1765 .flatten()?;
1766
1767 let mut element = render_inline_blame_entry(
1768 self.editor.clone(),
1769 workspace,
1770 &blame,
1771 blame_entry,
1772 &self.style,
1773 cx,
1774 )?;
1775
1776 let start_y = content_origin.y
1777 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1778
1779 let start_x = {
1780 let line_end = if let Some(crease_trailer) = crease_trailer {
1781 crease_trailer.bounds.right()
1782 } else {
1783 content_origin.x - scroll_pixel_position.x + line_layout.width
1784 };
1785
1786 let padded_line_end = line_end + padding;
1787
1788 let min_column_in_pixels = ProjectSettings::get_global(cx)
1789 .git
1790 .inline_blame
1791 .and_then(|settings| settings.min_column)
1792 .map(|col| self.column_pixels(col as usize, window, cx))
1793 .unwrap_or(px(0.));
1794 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1795
1796 cmp::max(padded_line_end, min_start)
1797 };
1798
1799 let absolute_offset = point(start_x, start_y);
1800 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), window, cx);
1801
1802 Some(element)
1803 }
1804
1805 fn layout_blame_entries(
1806 &self,
1807 buffer_rows: &[RowInfo],
1808 em_width: Pixels,
1809 scroll_position: gpui::Point<f32>,
1810 line_height: Pixels,
1811 gutter_hitbox: &Hitbox,
1812 max_width: Option<Pixels>,
1813 window: &mut Window,
1814 cx: &mut App,
1815 ) -> Option<Vec<AnyElement>> {
1816 if !self
1817 .editor
1818 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1819 {
1820 return None;
1821 }
1822
1823 let blame = self.editor.read(cx).blame.clone()?;
1824 let workspace = self.editor.read(cx).workspace()?;
1825 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1826 blame.blame_for_rows(buffer_rows, cx).collect()
1827 });
1828
1829 let width = if let Some(max_width) = max_width {
1830 AvailableSpace::Definite(max_width)
1831 } else {
1832 AvailableSpace::MaxContent
1833 };
1834 let scroll_top = scroll_position.y * line_height;
1835 let start_x = em_width;
1836
1837 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1838 let blame_renderer = cx.global::<GlobalBlameRenderer>().0.clone();
1839
1840 let shaped_lines = blamed_rows
1841 .into_iter()
1842 .enumerate()
1843 .flat_map(|(ix, blame_entry)| {
1844 let mut element = render_blame_entry(
1845 ix,
1846 &blame,
1847 blame_entry?,
1848 &self.style,
1849 &mut last_used_color,
1850 self.editor.clone(),
1851 workspace.clone(),
1852 blame_renderer.clone(),
1853 cx,
1854 )?;
1855
1856 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1857 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1858
1859 element.prepaint_as_root(
1860 absolute_offset,
1861 size(width, AvailableSpace::MinContent),
1862 window,
1863 cx,
1864 );
1865
1866 Some(element)
1867 })
1868 .collect();
1869
1870 Some(shaped_lines)
1871 }
1872
1873 fn layout_indent_guides(
1874 &self,
1875 content_origin: gpui::Point<Pixels>,
1876 text_origin: gpui::Point<Pixels>,
1877 visible_buffer_range: Range<MultiBufferRow>,
1878 scroll_pixel_position: gpui::Point<Pixels>,
1879 line_height: Pixels,
1880 snapshot: &DisplaySnapshot,
1881 window: &mut Window,
1882 cx: &mut App,
1883 ) -> Option<Vec<IndentGuideLayout>> {
1884 let indent_guides = self.editor.update(cx, |editor, cx| {
1885 editor.indent_guides(visible_buffer_range, snapshot, cx)
1886 })?;
1887
1888 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1889 editor
1890 .find_active_indent_guide_indices(&indent_guides, snapshot, window, cx)
1891 .unwrap_or_default()
1892 });
1893
1894 Some(
1895 indent_guides
1896 .into_iter()
1897 .enumerate()
1898 .filter_map(|(i, indent_guide)| {
1899 let single_indent_width =
1900 self.column_pixels(indent_guide.tab_size as usize, window, cx);
1901 let total_width = single_indent_width * indent_guide.depth as f32;
1902 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1903 if start_x >= text_origin.x {
1904 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1905 indent_guide.start_row..indent_guide.end_row,
1906 line_height,
1907 snapshot,
1908 );
1909
1910 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1911
1912 Some(IndentGuideLayout {
1913 origin: point(start_x, start_y),
1914 length,
1915 single_indent_width,
1916 depth: indent_guide.depth,
1917 active: active_indent_guide_indices.contains(&i),
1918 settings: indent_guide.settings,
1919 })
1920 } else {
1921 None
1922 }
1923 })
1924 .collect(),
1925 )
1926 }
1927
1928 fn calculate_indent_guide_bounds(
1929 row_range: Range<MultiBufferRow>,
1930 line_height: Pixels,
1931 snapshot: &DisplaySnapshot,
1932 ) -> (gpui::Pixels, gpui::Pixels) {
1933 let start_point = Point::new(row_range.start.0, 0);
1934 let end_point = Point::new(row_range.end.0, 0);
1935
1936 let row_range = start_point.to_display_point(snapshot).row()
1937 ..end_point.to_display_point(snapshot).row();
1938
1939 let mut prev_line = start_point;
1940 prev_line.row = prev_line.row.saturating_sub(1);
1941 let prev_line = prev_line.to_display_point(snapshot).row();
1942
1943 let mut cons_line = end_point;
1944 cons_line.row += 1;
1945 let cons_line = cons_line.to_display_point(snapshot).row();
1946
1947 let mut offset_y = row_range.start.0 as f32 * line_height;
1948 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1949
1950 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1951 if row_range.end == cons_line {
1952 length += line_height;
1953 }
1954
1955 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1956 // we want to extend the indent guide to the start of the block.
1957 let mut block_height = 0;
1958 let mut block_offset = 0;
1959 let mut found_excerpt_header = false;
1960 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1961 if matches!(block, Block::ExcerptBoundary { .. }) {
1962 found_excerpt_header = true;
1963 break;
1964 }
1965 block_offset += block.height();
1966 block_height += block.height();
1967 }
1968 if !found_excerpt_header {
1969 offset_y -= block_offset as f32 * line_height;
1970 length += block_height as f32 * line_height;
1971 }
1972
1973 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1974 // we want to ensure that the indent guide stops before the excerpt header.
1975 let mut block_height = 0;
1976 let mut found_excerpt_header = false;
1977 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1978 if matches!(block, Block::ExcerptBoundary { .. }) {
1979 found_excerpt_header = true;
1980 }
1981 block_height += block.height();
1982 }
1983 if found_excerpt_header {
1984 length -= block_height as f32 * line_height;
1985 }
1986
1987 (offset_y, length)
1988 }
1989
1990 fn layout_breakpoints(
1991 &self,
1992 line_height: Pixels,
1993 range: Range<DisplayRow>,
1994 scroll_pixel_position: gpui::Point<Pixels>,
1995 gutter_dimensions: &GutterDimensions,
1996 gutter_hitbox: &Hitbox,
1997 display_hunks: &[(DisplayDiffHunk, Option<Hitbox>)],
1998 snapshot: &EditorSnapshot,
1999 breakpoints: HashMap<DisplayRow, (Anchor, Breakpoint)>,
2000 row_infos: &[RowInfo],
2001 window: &mut Window,
2002 cx: &mut App,
2003 ) -> Vec<AnyElement> {
2004 self.editor.update(cx, |editor, cx| {
2005 breakpoints
2006 .into_iter()
2007 .filter_map(|(display_row, (text_anchor, bp))| {
2008 if row_infos
2009 .get((display_row.0.saturating_sub(range.start.0)) as usize)
2010 .is_some_and(|row_info| {
2011 row_info.expand_info.is_some()
2012 || row_info
2013 .diff_status
2014 .is_some_and(|status| status.is_deleted())
2015 })
2016 {
2017 return None;
2018 }
2019
2020 if range.start > display_row || range.end < display_row {
2021 return None;
2022 }
2023
2024 let row =
2025 MultiBufferRow(DisplayPoint::new(display_row, 0).to_point(&snapshot).row);
2026 if snapshot.is_line_folded(row) {
2027 return None;
2028 }
2029
2030 let button = editor.render_breakpoint(text_anchor, display_row, &bp, cx);
2031
2032 let button = prepaint_gutter_button(
2033 button,
2034 display_row,
2035 line_height,
2036 gutter_dimensions,
2037 scroll_pixel_position,
2038 gutter_hitbox,
2039 display_hunks,
2040 window,
2041 cx,
2042 );
2043 Some(button)
2044 })
2045 .collect_vec()
2046 })
2047 }
2048
2049 #[allow(clippy::too_many_arguments)]
2050 fn layout_run_indicators(
2051 &self,
2052 line_height: Pixels,
2053 range: Range<DisplayRow>,
2054 row_infos: &[RowInfo],
2055 scroll_pixel_position: gpui::Point<Pixels>,
2056 gutter_dimensions: &GutterDimensions,
2057 gutter_hitbox: &Hitbox,
2058 display_hunks: &[(DisplayDiffHunk, Option<Hitbox>)],
2059 snapshot: &EditorSnapshot,
2060 breakpoints: &mut HashMap<DisplayRow, (Anchor, Breakpoint)>,
2061 window: &mut Window,
2062 cx: &mut App,
2063 ) -> Vec<AnyElement> {
2064 self.editor.update(cx, |editor, cx| {
2065 let active_task_indicator_row =
2066 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
2067 deployed_from_indicator,
2068 actions,
2069 ..
2070 })) = editor.context_menu.borrow().as_ref()
2071 {
2072 actions
2073 .tasks
2074 .as_ref()
2075 .map(|tasks| tasks.position.to_display_point(snapshot).row())
2076 .or(*deployed_from_indicator)
2077 } else {
2078 None
2079 };
2080
2081 let offset_range_start =
2082 snapshot.display_point_to_point(DisplayPoint::new(range.start, 0), Bias::Left);
2083
2084 let offset_range_end =
2085 snapshot.display_point_to_point(DisplayPoint::new(range.end, 0), Bias::Right);
2086
2087 editor
2088 .tasks
2089 .iter()
2090 .filter_map(|(_, tasks)| {
2091 let multibuffer_point = tasks.offset.to_point(&snapshot.buffer_snapshot);
2092 if multibuffer_point < offset_range_start
2093 || multibuffer_point > offset_range_end
2094 {
2095 return None;
2096 }
2097 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
2098 let buffer_folded = snapshot
2099 .buffer_snapshot
2100 .buffer_line_for_row(multibuffer_row)
2101 .map(|(buffer_snapshot, _)| buffer_snapshot.remote_id())
2102 .map(|buffer_id| editor.is_buffer_folded(buffer_id, cx))
2103 .unwrap_or(false);
2104 if buffer_folded {
2105 return None;
2106 }
2107
2108 if snapshot.is_line_folded(multibuffer_row) {
2109 // Skip folded indicators, unless it's the starting line of a fold.
2110 if multibuffer_row
2111 .0
2112 .checked_sub(1)
2113 .map_or(false, |previous_row| {
2114 snapshot.is_line_folded(MultiBufferRow(previous_row))
2115 })
2116 {
2117 return None;
2118 }
2119 }
2120
2121 let display_row = multibuffer_point.to_display_point(snapshot).row();
2122 if row_infos
2123 .get((display_row - range.start).0 as usize)
2124 .is_some_and(|row_info| row_info.expand_info.is_some())
2125 {
2126 return None;
2127 }
2128
2129 let button = editor.render_run_indicator(
2130 &self.style,
2131 Some(display_row) == active_task_indicator_row,
2132 display_row,
2133 breakpoints.remove(&display_row),
2134 cx,
2135 );
2136
2137 let button = prepaint_gutter_button(
2138 button,
2139 display_row,
2140 line_height,
2141 gutter_dimensions,
2142 scroll_pixel_position,
2143 gutter_hitbox,
2144 display_hunks,
2145 window,
2146 cx,
2147 );
2148 Some(button)
2149 })
2150 .collect_vec()
2151 })
2152 }
2153
2154 fn layout_expand_toggles(
2155 &self,
2156 gutter_hitbox: &Hitbox,
2157 gutter_dimensions: GutterDimensions,
2158 em_width: Pixels,
2159 line_height: Pixels,
2160 scroll_position: gpui::Point<f32>,
2161 buffer_rows: &[RowInfo],
2162 window: &mut Window,
2163 cx: &mut App,
2164 ) -> Vec<Option<(AnyElement, gpui::Point<Pixels>)>> {
2165 let editor_font_size = self.style.text.font_size.to_pixels(window.rem_size()) * 1.2;
2166
2167 let scroll_top = scroll_position.y * line_height;
2168
2169 let max_line_number_length = self
2170 .editor
2171 .read(cx)
2172 .buffer()
2173 .read(cx)
2174 .snapshot(cx)
2175 .widest_line_number()
2176 .ilog10()
2177 + 1;
2178
2179 let elements = buffer_rows
2180 .into_iter()
2181 .enumerate()
2182 .map(|(ix, row_info)| {
2183 let ExpandInfo {
2184 excerpt_id,
2185 direction,
2186 } = row_info.expand_info?;
2187
2188 let icon_name = match direction {
2189 ExpandExcerptDirection::Up => IconName::ExpandUp,
2190 ExpandExcerptDirection::Down => IconName::ExpandDown,
2191 ExpandExcerptDirection::UpAndDown => IconName::ExpandVertical,
2192 };
2193
2194 let git_gutter_width = Self::gutter_strip_width(line_height);
2195 let available_width = gutter_dimensions.left_padding - git_gutter_width;
2196
2197 let editor = self.editor.clone();
2198 let is_wide = max_line_number_length >= MIN_LINE_NUMBER_DIGITS
2199 && row_info
2200 .buffer_row
2201 .is_some_and(|row| (row + 1).ilog10() + 1 == max_line_number_length)
2202 || gutter_dimensions.right_padding == px(0.);
2203
2204 let width = if is_wide {
2205 available_width - px(2.)
2206 } else {
2207 available_width + em_width - px(2.)
2208 };
2209
2210 let toggle = IconButton::new(("expand", ix), icon_name)
2211 .icon_color(Color::Custom(cx.theme().colors().editor_line_number))
2212 .selected_icon_color(Color::Custom(cx.theme().colors().editor_foreground))
2213 .icon_size(IconSize::Custom(rems(editor_font_size / window.rem_size())))
2214 .width(width.into())
2215 .on_click(move |_, window, cx| {
2216 editor.update(cx, |editor, cx| {
2217 editor.expand_excerpt(excerpt_id, direction, window, cx);
2218 });
2219 })
2220 .tooltip(Tooltip::for_action_title(
2221 "Expand Excerpt",
2222 &crate::actions::ExpandExcerpts::default(),
2223 ))
2224 .into_any_element();
2225
2226 let position = point(
2227 git_gutter_width + px(1.),
2228 ix as f32 * line_height - (scroll_top % line_height) + px(1.),
2229 );
2230 let origin = gutter_hitbox.origin + position;
2231
2232 Some((toggle, origin))
2233 })
2234 .collect();
2235
2236 elements
2237 }
2238
2239 fn layout_code_actions_indicator(
2240 &self,
2241 line_height: Pixels,
2242 newest_selection_head: DisplayPoint,
2243 scroll_pixel_position: gpui::Point<Pixels>,
2244 gutter_dimensions: &GutterDimensions,
2245 gutter_hitbox: &Hitbox,
2246 breakpoint_points: &mut HashMap<DisplayRow, (Anchor, Breakpoint)>,
2247 display_hunks: &[(DisplayDiffHunk, Option<Hitbox>)],
2248 window: &mut Window,
2249 cx: &mut App,
2250 ) -> Option<AnyElement> {
2251 let mut active = false;
2252 let mut button = None;
2253 let row = newest_selection_head.row();
2254 self.editor.update(cx, |editor, cx| {
2255 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
2256 deployed_from_indicator,
2257 ..
2258 })) = editor.context_menu.borrow().as_ref()
2259 {
2260 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
2261 };
2262
2263 let breakpoint = breakpoint_points.get(&row);
2264 button = editor.render_code_actions_indicator(&self.style, row, active, breakpoint, cx);
2265 });
2266
2267 let button = button?;
2268 breakpoint_points.remove(&row);
2269
2270 let button = prepaint_gutter_button(
2271 button,
2272 row,
2273 line_height,
2274 gutter_dimensions,
2275 scroll_pixel_position,
2276 gutter_hitbox,
2277 display_hunks,
2278 window,
2279 cx,
2280 );
2281
2282 Some(button)
2283 }
2284
2285 fn get_participant_color(participant_index: Option<ParticipantIndex>, cx: &App) -> PlayerColor {
2286 if let Some(index) = participant_index {
2287 cx.theme().players().color_for_participant(index.0)
2288 } else {
2289 cx.theme().players().absent()
2290 }
2291 }
2292
2293 fn calculate_relative_line_numbers(
2294 &self,
2295 snapshot: &EditorSnapshot,
2296 rows: &Range<DisplayRow>,
2297 relative_to: Option<DisplayRow>,
2298 ) -> HashMap<DisplayRow, DisplayRowDelta> {
2299 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
2300 let Some(relative_to) = relative_to else {
2301 return relative_rows;
2302 };
2303
2304 let start = rows.start.min(relative_to);
2305 let end = rows.end.max(relative_to);
2306
2307 let buffer_rows = snapshot
2308 .row_infos(start)
2309 .take(1 + end.minus(start) as usize)
2310 .collect::<Vec<_>>();
2311
2312 let head_idx = relative_to.minus(start);
2313 let mut delta = 1;
2314 let mut i = head_idx + 1;
2315 while i < buffer_rows.len() as u32 {
2316 if buffer_rows[i as usize].buffer_row.is_some() {
2317 if rows.contains(&DisplayRow(i + start.0)) {
2318 relative_rows.insert(DisplayRow(i + start.0), delta);
2319 }
2320 delta += 1;
2321 }
2322 i += 1;
2323 }
2324 delta = 1;
2325 i = head_idx.min(buffer_rows.len() as u32 - 1);
2326 while i > 0 && buffer_rows[i as usize].buffer_row.is_none() {
2327 i -= 1;
2328 }
2329
2330 while i > 0 {
2331 i -= 1;
2332 if buffer_rows[i as usize].buffer_row.is_some() {
2333 if rows.contains(&DisplayRow(i + start.0)) {
2334 relative_rows.insert(DisplayRow(i + start.0), delta);
2335 }
2336 delta += 1;
2337 }
2338 }
2339
2340 relative_rows
2341 }
2342
2343 fn layout_line_numbers(
2344 &self,
2345 gutter_hitbox: Option<&Hitbox>,
2346 gutter_dimensions: GutterDimensions,
2347 line_height: Pixels,
2348 scroll_position: gpui::Point<f32>,
2349 rows: Range<DisplayRow>,
2350 buffer_rows: &[RowInfo],
2351 active_rows: &BTreeMap<DisplayRow, LineHighlightSpec>,
2352 newest_selection_head: Option<DisplayPoint>,
2353 snapshot: &EditorSnapshot,
2354 window: &mut Window,
2355 cx: &mut App,
2356 ) -> Arc<HashMap<MultiBufferRow, LineNumberLayout>> {
2357 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
2358 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
2359 });
2360 if !include_line_numbers {
2361 return Arc::default();
2362 }
2363
2364 let (newest_selection_head, is_relative) = self.editor.update(cx, |editor, cx| {
2365 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
2366 let newest = editor.selections.newest::<Point>(cx);
2367 SelectionLayout::new(
2368 newest,
2369 editor.selections.line_mode,
2370 editor.cursor_shape,
2371 &snapshot.display_snapshot,
2372 true,
2373 true,
2374 None,
2375 )
2376 .head
2377 });
2378 let is_relative = editor.should_use_relative_line_numbers(cx);
2379 (newest_selection_head, is_relative)
2380 });
2381
2382 let relative_to = if is_relative {
2383 Some(newest_selection_head.row())
2384 } else {
2385 None
2386 };
2387 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
2388 let mut line_number = String::new();
2389 let line_numbers = buffer_rows
2390 .into_iter()
2391 .enumerate()
2392 .flat_map(|(ix, row_info)| {
2393 let display_row = DisplayRow(rows.start.0 + ix as u32);
2394 line_number.clear();
2395 let non_relative_number = row_info.buffer_row? + 1;
2396 let number = relative_rows
2397 .get(&display_row)
2398 .unwrap_or(&non_relative_number);
2399 write!(&mut line_number, "{number}").unwrap();
2400 if row_info
2401 .diff_status
2402 .is_some_and(|status| status.is_deleted())
2403 {
2404 return None;
2405 }
2406
2407 let color = active_rows
2408 .get(&display_row)
2409 .map(|spec| {
2410 if spec.breakpoint {
2411 cx.theme().colors().debugger_accent
2412 } else {
2413 cx.theme().colors().editor_active_line_number
2414 }
2415 })
2416 .unwrap_or_else(|| cx.theme().colors().editor_line_number);
2417 let shaped_line = self
2418 .shape_line_number(SharedString::from(&line_number), color, window)
2419 .log_err()?;
2420 let scroll_top = scroll_position.y * line_height;
2421 let line_origin = gutter_hitbox.map(|hitbox| {
2422 hitbox.origin
2423 + point(
2424 hitbox.size.width - shaped_line.width - gutter_dimensions.right_padding,
2425 ix as f32 * line_height - (scroll_top % line_height),
2426 )
2427 });
2428
2429 #[cfg(not(test))]
2430 let hitbox = line_origin.map(|line_origin| {
2431 window.insert_hitbox(
2432 Bounds::new(line_origin, size(shaped_line.width, line_height)),
2433 false,
2434 )
2435 });
2436 #[cfg(test)]
2437 let hitbox = {
2438 let _ = line_origin;
2439 None
2440 };
2441
2442 let multi_buffer_row = DisplayPoint::new(display_row, 0).to_point(snapshot).row;
2443 let multi_buffer_row = MultiBufferRow(multi_buffer_row);
2444 let line_number = LineNumberLayout {
2445 shaped_line,
2446 hitbox,
2447 };
2448 Some((multi_buffer_row, line_number))
2449 })
2450 .collect();
2451 Arc::new(line_numbers)
2452 }
2453
2454 fn layout_crease_toggles(
2455 &self,
2456 rows: Range<DisplayRow>,
2457 row_infos: &[RowInfo],
2458 active_rows: &BTreeMap<DisplayRow, LineHighlightSpec>,
2459 snapshot: &EditorSnapshot,
2460 window: &mut Window,
2461 cx: &mut App,
2462 ) -> Vec<Option<AnyElement>> {
2463 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
2464 && snapshot.mode == EditorMode::Full
2465 && self.editor.read(cx).is_singleton(cx);
2466 if include_fold_statuses {
2467 row_infos
2468 .into_iter()
2469 .enumerate()
2470 .map(|(ix, info)| {
2471 if info.expand_info.is_some() {
2472 return None;
2473 }
2474 let row = info.multibuffer_row?;
2475 let display_row = DisplayRow(rows.start.0 + ix as u32);
2476 let active = active_rows.contains_key(&display_row);
2477
2478 snapshot.render_crease_toggle(row, active, self.editor.clone(), window, cx)
2479 })
2480 .collect()
2481 } else {
2482 Vec::new()
2483 }
2484 }
2485
2486 fn layout_crease_trailers(
2487 &self,
2488 buffer_rows: impl IntoIterator<Item = RowInfo>,
2489 snapshot: &EditorSnapshot,
2490 window: &mut Window,
2491 cx: &mut App,
2492 ) -> Vec<Option<AnyElement>> {
2493 buffer_rows
2494 .into_iter()
2495 .map(|row_info| {
2496 if row_info.expand_info.is_some() {
2497 return None;
2498 }
2499 if let Some(row) = row_info.multibuffer_row {
2500 snapshot.render_crease_trailer(row, window, cx)
2501 } else {
2502 None
2503 }
2504 })
2505 .collect()
2506 }
2507
2508 fn layout_lines(
2509 rows: Range<DisplayRow>,
2510 snapshot: &EditorSnapshot,
2511 style: &EditorStyle,
2512 editor_width: Pixels,
2513 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2514 window: &mut Window,
2515 cx: &mut App,
2516 ) -> Vec<LineWithInvisibles> {
2517 if rows.start >= rows.end {
2518 return Vec::new();
2519 }
2520
2521 // Show the placeholder when the editor is empty
2522 if snapshot.is_empty() {
2523 let font_size = style.text.font_size.to_pixels(window.rem_size());
2524 let placeholder_color = cx.theme().colors().text_placeholder;
2525 let placeholder_text = snapshot.placeholder_text();
2526
2527 let placeholder_lines = placeholder_text
2528 .as_ref()
2529 .map_or("", AsRef::as_ref)
2530 .split('\n')
2531 .skip(rows.start.0 as usize)
2532 .chain(iter::repeat(""))
2533 .take(rows.len());
2534 placeholder_lines
2535 .filter_map(move |line| {
2536 let run = TextRun {
2537 len: line.len(),
2538 font: style.text.font(),
2539 color: placeholder_color,
2540 background_color: None,
2541 underline: Default::default(),
2542 strikethrough: None,
2543 };
2544 window
2545 .text_system()
2546 .shape_line(line.to_string().into(), font_size, &[run])
2547 .log_err()
2548 })
2549 .map(|line| LineWithInvisibles {
2550 width: line.width,
2551 len: line.len,
2552 fragments: smallvec![LineFragment::Text(line)],
2553 invisibles: Vec::new(),
2554 font_size,
2555 })
2556 .collect()
2557 } else {
2558 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
2559 LineWithInvisibles::from_chunks(
2560 chunks,
2561 &style,
2562 MAX_LINE_LEN,
2563 rows.len(),
2564 snapshot.mode,
2565 editor_width,
2566 is_row_soft_wrapped,
2567 window,
2568 cx,
2569 )
2570 }
2571 }
2572
2573 fn prepaint_lines(
2574 &self,
2575 start_row: DisplayRow,
2576 line_layouts: &mut [LineWithInvisibles],
2577 line_height: Pixels,
2578 scroll_pixel_position: gpui::Point<Pixels>,
2579 content_origin: gpui::Point<Pixels>,
2580 window: &mut Window,
2581 cx: &mut App,
2582 ) -> SmallVec<[AnyElement; 1]> {
2583 let mut line_elements = SmallVec::new();
2584 for (ix, line) in line_layouts.iter_mut().enumerate() {
2585 let row = start_row + DisplayRow(ix as u32);
2586 line.prepaint(
2587 line_height,
2588 scroll_pixel_position,
2589 row,
2590 content_origin,
2591 &mut line_elements,
2592 window,
2593 cx,
2594 );
2595 }
2596 line_elements
2597 }
2598
2599 fn render_block(
2600 &self,
2601 block: &Block,
2602 available_width: AvailableSpace,
2603 block_id: BlockId,
2604 block_row_start: DisplayRow,
2605 snapshot: &EditorSnapshot,
2606 text_x: Pixels,
2607 rows: &Range<DisplayRow>,
2608 line_layouts: &[LineWithInvisibles],
2609 gutter_dimensions: &GutterDimensions,
2610 line_height: Pixels,
2611 em_width: Pixels,
2612 text_hitbox: &Hitbox,
2613 editor_width: Pixels,
2614 scroll_width: &mut Pixels,
2615 resized_blocks: &mut HashMap<CustomBlockId, u32>,
2616 selections: &[Selection<Point>],
2617 selected_buffer_ids: &Vec<BufferId>,
2618 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2619 sticky_header_excerpt_id: Option<ExcerptId>,
2620 window: &mut Window,
2621 cx: &mut App,
2622 ) -> (AnyElement, Size<Pixels>) {
2623 let mut element = match block {
2624 Block::Custom(block) => {
2625 let block_start = block.start().to_point(&snapshot.buffer_snapshot);
2626 let block_end = block.end().to_point(&snapshot.buffer_snapshot);
2627 let align_to = block_start.to_display_point(snapshot);
2628 let anchor_x = text_x
2629 + if rows.contains(&align_to.row()) {
2630 line_layouts[align_to.row().minus(rows.start) as usize]
2631 .x_for_index(align_to.column() as usize)
2632 } else {
2633 layout_line(
2634 align_to.row(),
2635 snapshot,
2636 &self.style,
2637 editor_width,
2638 is_row_soft_wrapped,
2639 window,
2640 cx,
2641 )
2642 .x_for_index(align_to.column() as usize)
2643 };
2644
2645 let selected = selections
2646 .binary_search_by(|selection| {
2647 if selection.end <= block_start {
2648 Ordering::Less
2649 } else if selection.start >= block_end {
2650 Ordering::Greater
2651 } else {
2652 Ordering::Equal
2653 }
2654 })
2655 .is_ok();
2656
2657 div()
2658 .size_full()
2659 .child(block.render(&mut BlockContext {
2660 window,
2661 app: cx,
2662 anchor_x,
2663 gutter_dimensions,
2664 line_height,
2665 em_width,
2666 block_id,
2667 selected,
2668 max_width: text_hitbox.size.width.max(*scroll_width),
2669 editor_style: &self.style,
2670 }))
2671 .into_any()
2672 }
2673
2674 Block::FoldedBuffer {
2675 first_excerpt,
2676 height,
2677 ..
2678 } => {
2679 let selected = selected_buffer_ids.contains(&first_excerpt.buffer_id);
2680 let result = v_flex().id(block_id).w_full();
2681
2682 let jump_data = header_jump_data(snapshot, block_row_start, *height, first_excerpt);
2683 result
2684 .child(self.render_buffer_header(
2685 first_excerpt,
2686 true,
2687 selected,
2688 false,
2689 jump_data,
2690 window,
2691 cx,
2692 ))
2693 .into_any_element()
2694 }
2695
2696 Block::ExcerptBoundary {
2697 excerpt,
2698 height,
2699 starts_new_buffer,
2700 ..
2701 } => {
2702 let color = cx.theme().colors().clone();
2703 let mut result = v_flex().id(block_id).w_full();
2704
2705 let jump_data = header_jump_data(snapshot, block_row_start, *height, excerpt);
2706
2707 if *starts_new_buffer {
2708 if sticky_header_excerpt_id != Some(excerpt.id) {
2709 let selected = selected_buffer_ids.contains(&excerpt.buffer_id);
2710
2711 result = result.child(self.render_buffer_header(
2712 excerpt, false, selected, false, jump_data, window, cx,
2713 ));
2714 } else {
2715 result =
2716 result.child(div().h(FILE_HEADER_HEIGHT as f32 * window.line_height()));
2717 }
2718 } else {
2719 result = result.child(
2720 h_flex().relative().child(
2721 div()
2722 .top(line_height / 2.)
2723 .absolute()
2724 .w_full()
2725 .h_px()
2726 .bg(color.border_variant),
2727 ),
2728 );
2729 };
2730
2731 result.into_any()
2732 }
2733 };
2734
2735 // Discover the element's content height, then round up to the nearest multiple of line height.
2736 let preliminary_size = element.layout_as_root(
2737 size(available_width, AvailableSpace::MinContent),
2738 window,
2739 cx,
2740 );
2741 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2742 let final_size = if preliminary_size.height == quantized_height {
2743 preliminary_size
2744 } else {
2745 element.layout_as_root(size(available_width, quantized_height.into()), window, cx)
2746 };
2747
2748 if let BlockId::Custom(custom_block_id) = block_id {
2749 if block.height() > 0 {
2750 let element_height_in_lines =
2751 ((final_size.height / line_height).ceil() as u32).max(1);
2752 if element_height_in_lines != block.height() {
2753 resized_blocks.insert(custom_block_id, element_height_in_lines);
2754 }
2755 }
2756 }
2757
2758 (element, final_size)
2759 }
2760
2761 fn render_buffer_header(
2762 &self,
2763 for_excerpt: &ExcerptInfo,
2764 is_folded: bool,
2765 is_selected: bool,
2766 is_sticky: bool,
2767 jump_data: JumpData,
2768 window: &mut Window,
2769 cx: &mut App,
2770 ) -> Div {
2771 let editor = self.editor.read(cx);
2772 let file_status = editor
2773 .buffer
2774 .read(cx)
2775 .all_diff_hunks_expanded()
2776 .then(|| {
2777 editor
2778 .project
2779 .as_ref()?
2780 .read(cx)
2781 .status_for_buffer_id(for_excerpt.buffer_id, cx)
2782 })
2783 .flatten();
2784
2785 let include_root = editor
2786 .project
2787 .as_ref()
2788 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2789 .unwrap_or_default();
2790 let can_open_excerpts = Editor::can_open_excerpts_in_file(for_excerpt.buffer.file());
2791 let path = for_excerpt.buffer.resolve_file_path(cx, include_root);
2792 let filename = path
2793 .as_ref()
2794 .and_then(|path| Some(path.file_name()?.to_string_lossy().to_string()));
2795 let parent_path = path.as_ref().and_then(|path| {
2796 Some(path.parent()?.to_string_lossy().to_string() + std::path::MAIN_SEPARATOR_STR)
2797 });
2798 let focus_handle = editor.focus_handle(cx);
2799 let colors = cx.theme().colors();
2800
2801 div()
2802 .p_1()
2803 .w_full()
2804 .h(FILE_HEADER_HEIGHT as f32 * window.line_height())
2805 .child(
2806 h_flex()
2807 .size_full()
2808 .gap_2()
2809 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2810 .pl_0p5()
2811 .pr_5()
2812 .rounded_sm()
2813 .when(is_sticky, |el| el.shadow_md())
2814 .border_1()
2815 .map(|div| {
2816 let border_color = if is_selected
2817 && is_folded
2818 && focus_handle.contains_focused(window, cx)
2819 {
2820 colors.border_focused
2821 } else {
2822 colors.border
2823 };
2824 div.border_color(border_color)
2825 })
2826 .bg(colors.editor_subheader_background)
2827 .hover(|style| style.bg(colors.element_hover))
2828 .map(|header| {
2829 let editor = self.editor.clone();
2830 let buffer_id = for_excerpt.buffer_id;
2831 let toggle_chevron_icon =
2832 FileIcons::get_chevron_icon(!is_folded, cx).map(Icon::from_path);
2833 header.child(
2834 div()
2835 .hover(|style| style.bg(colors.element_selected))
2836 .rounded_xs()
2837 .child(
2838 ButtonLike::new("toggle-buffer-fold")
2839 .style(ui::ButtonStyle::Transparent)
2840 .height(px(28.).into())
2841 .width(px(28.).into())
2842 .children(toggle_chevron_icon)
2843 .tooltip({
2844 let focus_handle = focus_handle.clone();
2845 move |window, cx| {
2846 Tooltip::for_action_in(
2847 "Toggle Excerpt Fold",
2848 &ToggleFold,
2849 &focus_handle,
2850 window,
2851 cx,
2852 )
2853 }
2854 })
2855 .on_click(move |_, _, cx| {
2856 if is_folded {
2857 editor.update(cx, |editor, cx| {
2858 editor.unfold_buffer(buffer_id, cx);
2859 });
2860 } else {
2861 editor.update(cx, |editor, cx| {
2862 editor.fold_buffer(buffer_id, cx);
2863 });
2864 }
2865 }),
2866 ),
2867 )
2868 })
2869 .children(
2870 editor
2871 .addons
2872 .values()
2873 .filter_map(|addon| {
2874 addon.render_buffer_header_controls(for_excerpt, window, cx)
2875 })
2876 .take(1),
2877 )
2878 .child(
2879 h_flex()
2880 .cursor_pointer()
2881 .id("path header block")
2882 .size_full()
2883 .justify_between()
2884 .child(
2885 h_flex()
2886 .gap_2()
2887 .child(
2888 Label::new(
2889 filename
2890 .map(SharedString::from)
2891 .unwrap_or_else(|| "untitled".into()),
2892 )
2893 .single_line()
2894 .when_some(
2895 file_status,
2896 |el, status| {
2897 el.color(if status.is_conflicted() {
2898 Color::Conflict
2899 } else if status.is_modified() {
2900 Color::Modified
2901 } else if status.is_deleted() {
2902 Color::Disabled
2903 } else {
2904 Color::Created
2905 })
2906 .when(status.is_deleted(), |el| el.strikethrough())
2907 },
2908 ),
2909 )
2910 .when_some(parent_path, |then, path| {
2911 then.child(div().child(path).text_color(
2912 if file_status.is_some_and(FileStatus::is_deleted) {
2913 colors.text_disabled
2914 } else {
2915 colors.text_muted
2916 },
2917 ))
2918 }),
2919 )
2920 .when(can_open_excerpts && is_selected && path.is_some(), |el| {
2921 el.child(
2922 h_flex()
2923 .id("jump-to-file-button")
2924 .gap_2p5()
2925 .child(Label::new("Jump To File"))
2926 .children(
2927 KeyBinding::for_action_in(
2928 &OpenExcerpts,
2929 &focus_handle,
2930 window,
2931 cx,
2932 )
2933 .map(|binding| binding.into_any_element()),
2934 ),
2935 )
2936 })
2937 .on_mouse_down(MouseButton::Left, |_, _, cx| cx.stop_propagation())
2938 .on_click(window.listener_for(&self.editor, {
2939 move |editor, e: &ClickEvent, window, cx| {
2940 editor.open_excerpts_common(
2941 Some(jump_data.clone()),
2942 e.down.modifiers.secondary(),
2943 window,
2944 cx,
2945 );
2946 }
2947 })),
2948 ),
2949 )
2950 }
2951
2952 fn render_blocks(
2953 &self,
2954 rows: Range<DisplayRow>,
2955 snapshot: &EditorSnapshot,
2956 hitbox: &Hitbox,
2957 text_hitbox: &Hitbox,
2958 editor_width: Pixels,
2959 scroll_width: &mut Pixels,
2960 gutter_dimensions: &GutterDimensions,
2961 em_width: Pixels,
2962 text_x: Pixels,
2963 line_height: Pixels,
2964 line_layouts: &[LineWithInvisibles],
2965 selections: &[Selection<Point>],
2966 selected_buffer_ids: &Vec<BufferId>,
2967 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2968 sticky_header_excerpt_id: Option<ExcerptId>,
2969 window: &mut Window,
2970 cx: &mut App,
2971 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2972 let (fixed_blocks, non_fixed_blocks) = snapshot
2973 .blocks_in_range(rows.clone())
2974 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2975
2976 let mut focused_block = self
2977 .editor
2978 .update(cx, |editor, _| editor.take_focused_block());
2979 let mut fixed_block_max_width = Pixels::ZERO;
2980 let mut blocks = Vec::new();
2981 let mut resized_blocks = HashMap::default();
2982
2983 for (row, block) in fixed_blocks {
2984 let block_id = block.id();
2985
2986 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2987 focused_block = None;
2988 }
2989
2990 let (element, element_size) = self.render_block(
2991 block,
2992 AvailableSpace::MinContent,
2993 block_id,
2994 row,
2995 snapshot,
2996 text_x,
2997 &rows,
2998 line_layouts,
2999 gutter_dimensions,
3000 line_height,
3001 em_width,
3002 text_hitbox,
3003 editor_width,
3004 scroll_width,
3005 &mut resized_blocks,
3006 selections,
3007 selected_buffer_ids,
3008 is_row_soft_wrapped,
3009 sticky_header_excerpt_id,
3010 window,
3011 cx,
3012 );
3013 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
3014 blocks.push(BlockLayout {
3015 id: block_id,
3016 row: Some(row),
3017 element,
3018 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
3019 style: BlockStyle::Fixed,
3020 is_buffer_header: block.is_buffer_header(),
3021 });
3022 }
3023
3024 for (row, block) in non_fixed_blocks {
3025 let style = block.style();
3026 let width = match style {
3027 BlockStyle::Sticky => hitbox.size.width,
3028 BlockStyle::Flex => hitbox
3029 .size
3030 .width
3031 .max(fixed_block_max_width)
3032 .max(gutter_dimensions.width + *scroll_width),
3033 BlockStyle::Fixed => unreachable!(),
3034 };
3035 let block_id = block.id();
3036
3037 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
3038 focused_block = None;
3039 }
3040
3041 let (element, element_size) = self.render_block(
3042 block,
3043 width.into(),
3044 block_id,
3045 row,
3046 snapshot,
3047 text_x,
3048 &rows,
3049 line_layouts,
3050 gutter_dimensions,
3051 line_height,
3052 em_width,
3053 text_hitbox,
3054 editor_width,
3055 scroll_width,
3056 &mut resized_blocks,
3057 selections,
3058 selected_buffer_ids,
3059 is_row_soft_wrapped,
3060 sticky_header_excerpt_id,
3061 window,
3062 cx,
3063 );
3064
3065 blocks.push(BlockLayout {
3066 id: block_id,
3067 row: Some(row),
3068 element,
3069 available_space: size(width.into(), element_size.height.into()),
3070 style,
3071 is_buffer_header: block.is_buffer_header(),
3072 });
3073 }
3074
3075 if let Some(focused_block) = focused_block {
3076 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
3077 if focus_handle.is_focused(window) {
3078 if let Some(block) = snapshot.block_for_id(focused_block.id) {
3079 let style = block.style();
3080 let width = match style {
3081 BlockStyle::Fixed => AvailableSpace::MinContent,
3082 BlockStyle::Flex => AvailableSpace::Definite(
3083 hitbox
3084 .size
3085 .width
3086 .max(fixed_block_max_width)
3087 .max(gutter_dimensions.width + *scroll_width),
3088 ),
3089 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
3090 };
3091
3092 let (element, element_size) = self.render_block(
3093 &block,
3094 width,
3095 focused_block.id,
3096 rows.end,
3097 snapshot,
3098 text_x,
3099 &rows,
3100 line_layouts,
3101 gutter_dimensions,
3102 line_height,
3103 em_width,
3104 text_hitbox,
3105 editor_width,
3106 scroll_width,
3107 &mut resized_blocks,
3108 selections,
3109 selected_buffer_ids,
3110 is_row_soft_wrapped,
3111 sticky_header_excerpt_id,
3112 window,
3113 cx,
3114 );
3115
3116 blocks.push(BlockLayout {
3117 id: block.id(),
3118 row: None,
3119 element,
3120 available_space: size(width, element_size.height.into()),
3121 style,
3122 is_buffer_header: block.is_buffer_header(),
3123 });
3124 }
3125 }
3126 }
3127 }
3128
3129 if resized_blocks.is_empty() {
3130 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
3131 Ok(blocks)
3132 } else {
3133 Err(resized_blocks)
3134 }
3135 }
3136
3137 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
3138 /// a restart of rendering for the editor based on the new sizes.
3139 fn layout_blocks(
3140 &self,
3141 blocks: &mut Vec<BlockLayout>,
3142 block_starts: &mut HashSet<DisplayRow>,
3143 hitbox: &Hitbox,
3144 line_height: Pixels,
3145 scroll_pixel_position: gpui::Point<Pixels>,
3146 window: &mut Window,
3147 cx: &mut App,
3148 ) {
3149 for block in blocks {
3150 let mut origin = if let Some(row) = block.row {
3151 block_starts.insert(row);
3152 hitbox.origin
3153 + point(
3154 Pixels::ZERO,
3155 row.as_f32() * line_height - scroll_pixel_position.y,
3156 )
3157 } else {
3158 // Position the block outside the visible area
3159 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
3160 };
3161
3162 if !matches!(block.style, BlockStyle::Sticky) {
3163 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
3164 }
3165
3166 let focus_handle =
3167 block
3168 .element
3169 .prepaint_as_root(origin, block.available_space, window, cx);
3170
3171 if let Some(focus_handle) = focus_handle {
3172 self.editor.update(cx, |editor, _cx| {
3173 editor.set_focused_block(FocusedBlock {
3174 id: block.id,
3175 focus_handle: focus_handle.downgrade(),
3176 });
3177 });
3178 }
3179 }
3180 }
3181
3182 fn layout_sticky_buffer_header(
3183 &self,
3184 StickyHeaderExcerpt { excerpt }: StickyHeaderExcerpt<'_>,
3185 scroll_position: f32,
3186 line_height: Pixels,
3187 snapshot: &EditorSnapshot,
3188 hitbox: &Hitbox,
3189 selected_buffer_ids: &Vec<BufferId>,
3190 blocks: &[BlockLayout],
3191 window: &mut Window,
3192 cx: &mut App,
3193 ) -> AnyElement {
3194 let jump_data = header_jump_data(
3195 snapshot,
3196 DisplayRow(scroll_position as u32),
3197 FILE_HEADER_HEIGHT + MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
3198 excerpt,
3199 );
3200
3201 let editor_bg_color = cx.theme().colors().editor_background;
3202
3203 let selected = selected_buffer_ids.contains(&excerpt.buffer_id);
3204
3205 let mut header = v_flex()
3206 .relative()
3207 .child(
3208 div()
3209 .w(hitbox.bounds.size.width)
3210 .h(FILE_HEADER_HEIGHT as f32 * line_height)
3211 .bg(linear_gradient(
3212 0.,
3213 linear_color_stop(editor_bg_color.opacity(0.), 0.),
3214 linear_color_stop(editor_bg_color, 0.6),
3215 ))
3216 .absolute()
3217 .top_0(),
3218 )
3219 .child(
3220 self.render_buffer_header(excerpt, false, selected, true, jump_data, window, cx)
3221 .into_any_element(),
3222 )
3223 .into_any_element();
3224
3225 let mut origin = hitbox.origin;
3226 // Move floating header up to avoid colliding with the next buffer header.
3227 for block in blocks.iter() {
3228 if !block.is_buffer_header {
3229 continue;
3230 }
3231
3232 let Some(display_row) = block.row.filter(|row| row.0 > scroll_position as u32) else {
3233 continue;
3234 };
3235
3236 let max_row = display_row.0.saturating_sub(FILE_HEADER_HEIGHT);
3237 let offset = scroll_position - max_row as f32;
3238
3239 if offset > 0.0 {
3240 origin.y -= offset * line_height;
3241 }
3242 break;
3243 }
3244
3245 let size = size(
3246 AvailableSpace::Definite(hitbox.size.width),
3247 AvailableSpace::MinContent,
3248 );
3249
3250 header.prepaint_as_root(origin, size, window, cx);
3251
3252 header
3253 }
3254
3255 fn layout_cursor_popovers(
3256 &self,
3257 line_height: Pixels,
3258 text_hitbox: &Hitbox,
3259 content_origin: gpui::Point<Pixels>,
3260 start_row: DisplayRow,
3261 scroll_pixel_position: gpui::Point<Pixels>,
3262 line_layouts: &[LineWithInvisibles],
3263 cursor: DisplayPoint,
3264 cursor_point: Point,
3265 style: &EditorStyle,
3266 window: &mut Window,
3267 cx: &mut App,
3268 ) {
3269 let mut min_menu_height = Pixels::ZERO;
3270 let mut max_menu_height = Pixels::ZERO;
3271 let mut height_above_menu = Pixels::ZERO;
3272 let height_below_menu = Pixels::ZERO;
3273 let mut edit_prediction_popover_visible = false;
3274 let mut context_menu_visible = false;
3275 let context_menu_placement;
3276
3277 {
3278 let editor = self.editor.read(cx);
3279 if editor
3280 .edit_prediction_visible_in_cursor_popover(editor.has_active_inline_completion())
3281 {
3282 height_above_menu +=
3283 editor.edit_prediction_cursor_popover_height() + POPOVER_Y_PADDING;
3284 edit_prediction_popover_visible = true;
3285 }
3286
3287 if editor.context_menu_visible() {
3288 if let Some(crate::ContextMenuOrigin::Cursor) = editor.context_menu_origin() {
3289 let (min_height_in_lines, max_height_in_lines) = editor
3290 .context_menu_options
3291 .as_ref()
3292 .map_or((3, 12), |options| {
3293 (options.min_entries_visible, options.max_entries_visible)
3294 });
3295
3296 min_menu_height += line_height * min_height_in_lines as f32 + POPOVER_Y_PADDING;
3297 max_menu_height += line_height * max_height_in_lines as f32 + POPOVER_Y_PADDING;
3298 context_menu_visible = true;
3299 }
3300 }
3301 context_menu_placement = editor
3302 .context_menu_options
3303 .as_ref()
3304 .and_then(|options| options.placement.clone());
3305 }
3306
3307 let visible = edit_prediction_popover_visible || context_menu_visible;
3308 if !visible {
3309 return;
3310 }
3311
3312 let cursor_row_layout = &line_layouts[cursor.row().minus(start_row) as usize];
3313 let target_position = content_origin
3314 + gpui::Point {
3315 x: cmp::max(
3316 px(0.),
3317 cursor_row_layout.x_for_index(cursor.column() as usize)
3318 - scroll_pixel_position.x,
3319 ),
3320 y: cmp::max(
3321 px(0.),
3322 cursor.row().next_row().as_f32() * line_height - scroll_pixel_position.y,
3323 ),
3324 };
3325
3326 let viewport_bounds =
3327 Bounds::new(Default::default(), window.viewport_size()).extend(Edges {
3328 right: -Self::SCROLLBAR_WIDTH - MENU_GAP,
3329 ..Default::default()
3330 });
3331
3332 let min_height = height_above_menu + min_menu_height + height_below_menu;
3333 let max_height = height_above_menu + max_menu_height + height_below_menu;
3334 let Some((laid_out_popovers, y_flipped)) = self.layout_popovers_above_or_below_line(
3335 target_position,
3336 line_height,
3337 min_height,
3338 max_height,
3339 context_menu_placement,
3340 text_hitbox,
3341 viewport_bounds,
3342 window,
3343 cx,
3344 |height, max_width_for_stable_x, y_flipped, window, cx| {
3345 // First layout the menu to get its size - others can be at least this wide.
3346 let context_menu = if context_menu_visible {
3347 let menu_height = if y_flipped {
3348 height - height_below_menu
3349 } else {
3350 height - height_above_menu
3351 };
3352 let mut element = self
3353 .render_context_menu(line_height, menu_height, y_flipped, window, cx)
3354 .expect("Visible context menu should always render.");
3355 let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
3356 Some((CursorPopoverType::CodeContextMenu, element, size))
3357 } else {
3358 None
3359 };
3360 let min_width = context_menu
3361 .as_ref()
3362 .map_or(px(0.), |(_, _, size)| size.width);
3363 let max_width = max_width_for_stable_x.max(
3364 context_menu
3365 .as_ref()
3366 .map_or(px(0.), |(_, _, size)| size.width),
3367 );
3368
3369 let edit_prediction = if edit_prediction_popover_visible {
3370 self.editor.update(cx, move |editor, cx| {
3371 let accept_binding = editor.accept_edit_prediction_keybind(window, cx);
3372 let mut element = editor.render_edit_prediction_cursor_popover(
3373 min_width,
3374 max_width,
3375 cursor_point,
3376 style,
3377 accept_binding.keystroke(),
3378 window,
3379 cx,
3380 )?;
3381 let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
3382 Some((CursorPopoverType::EditPrediction, element, size))
3383 })
3384 } else {
3385 None
3386 };
3387 vec![edit_prediction, context_menu]
3388 .into_iter()
3389 .flatten()
3390 .collect::<Vec<_>>()
3391 },
3392 ) else {
3393 return;
3394 };
3395
3396 let Some((menu_ix, (_, menu_bounds))) = laid_out_popovers
3397 .iter()
3398 .find_position(|(x, _)| matches!(x, CursorPopoverType::CodeContextMenu))
3399 else {
3400 return;
3401 };
3402 let last_ix = laid_out_popovers.len() - 1;
3403 let menu_is_last = menu_ix == last_ix;
3404 let first_popover_bounds = laid_out_popovers[0].1;
3405 let last_popover_bounds = laid_out_popovers[last_ix].1;
3406
3407 // Bounds to layout the aside around. When y_flipped, the aside goes either above or to the
3408 // right, and otherwise it goes below or to the right.
3409 let mut target_bounds = Bounds::from_corners(
3410 first_popover_bounds.origin,
3411 last_popover_bounds.bottom_right(),
3412 );
3413 target_bounds.size.width = menu_bounds.size.width;
3414
3415 // Like `target_bounds`, but with the max height it could occupy. Choosing an aside position
3416 // based on this is preferred for layout stability.
3417 let mut max_target_bounds = target_bounds;
3418 max_target_bounds.size.height = max_height;
3419 if y_flipped {
3420 max_target_bounds.origin.y -= max_height - target_bounds.size.height;
3421 }
3422
3423 // Add spacing around `target_bounds` and `max_target_bounds`.
3424 let mut extend_amount = Edges::all(MENU_GAP);
3425 if y_flipped {
3426 extend_amount.bottom = line_height;
3427 } else {
3428 extend_amount.top = line_height;
3429 }
3430 let target_bounds = target_bounds.extend(extend_amount);
3431 let max_target_bounds = max_target_bounds.extend(extend_amount);
3432
3433 let must_place_above_or_below =
3434 if y_flipped && !menu_is_last && menu_bounds.size.height < max_menu_height {
3435 laid_out_popovers[menu_ix + 1..]
3436 .iter()
3437 .any(|(_, popover_bounds)| popover_bounds.size.width > menu_bounds.size.width)
3438 } else {
3439 false
3440 };
3441
3442 self.layout_context_menu_aside(
3443 y_flipped,
3444 *menu_bounds,
3445 target_bounds,
3446 max_target_bounds,
3447 max_menu_height,
3448 must_place_above_or_below,
3449 text_hitbox,
3450 viewport_bounds,
3451 window,
3452 cx,
3453 );
3454 }
3455
3456 fn layout_gutter_menu(
3457 &self,
3458 line_height: Pixels,
3459 text_hitbox: &Hitbox,
3460 content_origin: gpui::Point<Pixels>,
3461 scroll_pixel_position: gpui::Point<Pixels>,
3462 gutter_overshoot: Pixels,
3463 window: &mut Window,
3464 cx: &mut App,
3465 ) {
3466 let editor = self.editor.read(cx);
3467 if !editor.context_menu_visible() {
3468 return;
3469 }
3470 let Some(crate::ContextMenuOrigin::GutterIndicator(gutter_row)) =
3471 editor.context_menu_origin()
3472 else {
3473 return;
3474 };
3475 // Context menu was spawned via a click on a gutter. Ensure it's a bit closer to the
3476 // indicator than just a plain first column of the text field.
3477 let target_position = content_origin
3478 + gpui::Point {
3479 x: -gutter_overshoot,
3480 y: gutter_row.next_row().as_f32() * line_height - scroll_pixel_position.y,
3481 };
3482
3483 let (min_height_in_lines, max_height_in_lines) = editor
3484 .context_menu_options
3485 .as_ref()
3486 .map_or((3, 12), |options| {
3487 (options.min_entries_visible, options.max_entries_visible)
3488 });
3489
3490 let min_height = line_height * min_height_in_lines as f32 + POPOVER_Y_PADDING;
3491 let max_height = line_height * max_height_in_lines as f32 + POPOVER_Y_PADDING;
3492 let viewport_bounds =
3493 Bounds::new(Default::default(), window.viewport_size()).extend(Edges {
3494 right: -Self::SCROLLBAR_WIDTH - MENU_GAP,
3495 ..Default::default()
3496 });
3497 self.layout_popovers_above_or_below_line(
3498 target_position,
3499 line_height,
3500 min_height,
3501 max_height,
3502 editor
3503 .context_menu_options
3504 .as_ref()
3505 .and_then(|options| options.placement.clone()),
3506 text_hitbox,
3507 viewport_bounds,
3508 window,
3509 cx,
3510 move |height, _max_width_for_stable_x, y_flipped, window, cx| {
3511 let mut element = self
3512 .render_context_menu(line_height, height, y_flipped, window, cx)
3513 .expect("Visible context menu should always render.");
3514 let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
3515 vec![(CursorPopoverType::CodeContextMenu, element, size)]
3516 },
3517 );
3518 }
3519
3520 fn layout_popovers_above_or_below_line(
3521 &self,
3522 target_position: gpui::Point<Pixels>,
3523 line_height: Pixels,
3524 min_height: Pixels,
3525 max_height: Pixels,
3526 placement: Option<ContextMenuPlacement>,
3527 text_hitbox: &Hitbox,
3528 viewport_bounds: Bounds<Pixels>,
3529 window: &mut Window,
3530 cx: &mut App,
3531 make_sized_popovers: impl FnOnce(
3532 Pixels,
3533 Pixels,
3534 bool,
3535 &mut Window,
3536 &mut App,
3537 ) -> Vec<(CursorPopoverType, AnyElement, Size<Pixels>)>,
3538 ) -> Option<(Vec<(CursorPopoverType, Bounds<Pixels>)>, bool)> {
3539 let text_style = TextStyleRefinement {
3540 line_height: Some(DefiniteLength::Fraction(
3541 BufferLineHeight::Comfortable.value(),
3542 )),
3543 ..Default::default()
3544 };
3545 window.with_text_style(Some(text_style), |window| {
3546 // If the max height won't fit below and there is more space above, put it above the line.
3547 let bottom_y_when_flipped = target_position.y - line_height;
3548 let available_above = bottom_y_when_flipped - text_hitbox.top();
3549 let available_below = text_hitbox.bottom() - target_position.y;
3550 let y_overflows_below = max_height > available_below;
3551 let mut y_flipped = match placement {
3552 Some(ContextMenuPlacement::Above) => true,
3553 Some(ContextMenuPlacement::Below) => false,
3554 None => y_overflows_below && available_above > available_below,
3555 };
3556 let mut height = cmp::min(
3557 max_height,
3558 if y_flipped {
3559 available_above
3560 } else {
3561 available_below
3562 },
3563 );
3564
3565 // If the min height doesn't fit within text bounds, instead fit within the window.
3566 if height < min_height {
3567 let available_above = bottom_y_when_flipped;
3568 let available_below = viewport_bounds.bottom() - target_position.y;
3569 let (y_flipped_override, height_override) = match placement {
3570 Some(ContextMenuPlacement::Above) => {
3571 (true, cmp::min(available_above, min_height))
3572 }
3573 Some(ContextMenuPlacement::Below) => {
3574 (false, cmp::min(available_below, min_height))
3575 }
3576 None => {
3577 if available_below > min_height {
3578 (false, min_height)
3579 } else if available_above > min_height {
3580 (true, min_height)
3581 } else if available_above > available_below {
3582 (true, available_above)
3583 } else {
3584 (false, available_below)
3585 }
3586 }
3587 };
3588 y_flipped = y_flipped_override;
3589 height = height_override;
3590 }
3591
3592 let max_width_for_stable_x = viewport_bounds.right() - target_position.x;
3593
3594 // TODO: Use viewport_bounds.width as a max width so that it doesn't get clipped on the left
3595 // for very narrow windows.
3596 let popovers =
3597 make_sized_popovers(height, max_width_for_stable_x, y_flipped, window, cx);
3598 if popovers.is_empty() {
3599 return None;
3600 }
3601
3602 let max_width = popovers
3603 .iter()
3604 .map(|(_, _, size)| size.width)
3605 .max()
3606 .unwrap_or_default();
3607
3608 let mut current_position = gpui::Point {
3609 // Snap the right edge of the list to the right edge of the window if its horizontal bounds
3610 // overflow. Include space for the scrollbar.
3611 x: target_position
3612 .x
3613 .min((viewport_bounds.right() - max_width).max(Pixels::ZERO)),
3614 y: if y_flipped {
3615 bottom_y_when_flipped
3616 } else {
3617 target_position.y
3618 },
3619 };
3620
3621 let mut laid_out_popovers = popovers
3622 .into_iter()
3623 .map(|(popover_type, element, size)| {
3624 if y_flipped {
3625 current_position.y -= size.height;
3626 }
3627 let position = current_position;
3628 window.defer_draw(element, current_position, 1);
3629 if !y_flipped {
3630 current_position.y += size.height + MENU_GAP;
3631 } else {
3632 current_position.y -= MENU_GAP;
3633 }
3634 (popover_type, Bounds::new(position, size))
3635 })
3636 .collect::<Vec<_>>();
3637
3638 if y_flipped {
3639 laid_out_popovers.reverse();
3640 }
3641
3642 Some((laid_out_popovers, y_flipped))
3643 })
3644 }
3645
3646 fn layout_context_menu_aside(
3647 &self,
3648 y_flipped: bool,
3649 menu_bounds: Bounds<Pixels>,
3650 target_bounds: Bounds<Pixels>,
3651 max_target_bounds: Bounds<Pixels>,
3652 max_height: Pixels,
3653 must_place_above_or_below: bool,
3654 text_hitbox: &Hitbox,
3655 viewport_bounds: Bounds<Pixels>,
3656 window: &mut Window,
3657 cx: &mut App,
3658 ) {
3659 let available_within_viewport = target_bounds.space_within(&viewport_bounds);
3660 let positioned_aside = if available_within_viewport.right >= MENU_ASIDE_MIN_WIDTH
3661 && !must_place_above_or_below
3662 {
3663 let max_width = cmp::min(
3664 available_within_viewport.right - px(1.),
3665 MENU_ASIDE_MAX_WIDTH,
3666 );
3667 let Some(mut aside) = self.render_context_menu_aside(
3668 size(max_width, max_height - POPOVER_Y_PADDING),
3669 window,
3670 cx,
3671 ) else {
3672 return;
3673 };
3674 aside.layout_as_root(AvailableSpace::min_size(), window, cx);
3675 let right_position = point(target_bounds.right(), menu_bounds.origin.y);
3676 Some((aside, right_position))
3677 } else {
3678 let max_size = size(
3679 // TODO(mgsloan): Once the menu is bounded by viewport width the bound on viewport
3680 // won't be needed here.
3681 cmp::min(
3682 cmp::max(menu_bounds.size.width - px(2.), MENU_ASIDE_MIN_WIDTH),
3683 viewport_bounds.right(),
3684 ),
3685 cmp::min(
3686 max_height,
3687 cmp::max(
3688 available_within_viewport.top,
3689 available_within_viewport.bottom,
3690 ),
3691 ) - POPOVER_Y_PADDING,
3692 );
3693 let Some(mut aside) = self.render_context_menu_aside(max_size, window, cx) else {
3694 return;
3695 };
3696 let actual_size = aside.layout_as_root(AvailableSpace::min_size(), window, cx);
3697
3698 let top_position = point(
3699 menu_bounds.origin.x,
3700 target_bounds.top() - actual_size.height,
3701 );
3702 let bottom_position = point(menu_bounds.origin.x, target_bounds.bottom());
3703
3704 let fit_within = |available: Edges<Pixels>, wanted: Size<Pixels>| {
3705 // Prefer to fit on the same side of the line as the menu, then on the other side of
3706 // the line.
3707 if !y_flipped && wanted.height < available.bottom {
3708 Some(bottom_position)
3709 } else if !y_flipped && wanted.height < available.top {
3710 Some(top_position)
3711 } else if y_flipped && wanted.height < available.top {
3712 Some(top_position)
3713 } else if y_flipped && wanted.height < available.bottom {
3714 Some(bottom_position)
3715 } else {
3716 None
3717 }
3718 };
3719
3720 // Prefer choosing a direction using max sizes rather than actual size for stability.
3721 let available_within_text = max_target_bounds.space_within(&text_hitbox.bounds);
3722 let wanted = size(MENU_ASIDE_MAX_WIDTH, max_height);
3723 let aside_position = fit_within(available_within_text, wanted)
3724 // Fallback: fit max size in window.
3725 .or_else(|| fit_within(max_target_bounds.space_within(&viewport_bounds), wanted))
3726 // Fallback: fit actual size in window.
3727 .or_else(|| fit_within(available_within_viewport, actual_size));
3728
3729 aside_position.map(|position| (aside, position))
3730 };
3731
3732 // Skip drawing if it doesn't fit anywhere.
3733 if let Some((aside, position)) = positioned_aside {
3734 window.defer_draw(aside, position, 2);
3735 }
3736 }
3737
3738 fn render_context_menu(
3739 &self,
3740 line_height: Pixels,
3741 height: Pixels,
3742 y_flipped: bool,
3743 window: &mut Window,
3744 cx: &mut App,
3745 ) -> Option<AnyElement> {
3746 let max_height_in_lines = ((height - POPOVER_Y_PADDING) / line_height).floor() as u32;
3747 self.editor.update(cx, |editor, cx| {
3748 editor.render_context_menu(&self.style, max_height_in_lines, y_flipped, window, cx)
3749 })
3750 }
3751
3752 fn render_context_menu_aside(
3753 &self,
3754 max_size: Size<Pixels>,
3755 window: &mut Window,
3756 cx: &mut App,
3757 ) -> Option<AnyElement> {
3758 if max_size.width < px(100.) || max_size.height < px(12.) {
3759 None
3760 } else {
3761 self.editor.update(cx, |editor, cx| {
3762 editor.render_context_menu_aside(max_size, window, cx)
3763 })
3764 }
3765 }
3766
3767 fn layout_mouse_context_menu(
3768 &self,
3769 editor_snapshot: &EditorSnapshot,
3770 visible_range: Range<DisplayRow>,
3771 content_origin: gpui::Point<Pixels>,
3772 window: &mut Window,
3773 cx: &mut App,
3774 ) -> Option<AnyElement> {
3775 let position = self.editor.update(cx, |editor, _cx| {
3776 let visible_start_point = editor.display_to_pixel_point(
3777 DisplayPoint::new(visible_range.start, 0),
3778 editor_snapshot,
3779 window,
3780 )?;
3781 let visible_end_point = editor.display_to_pixel_point(
3782 DisplayPoint::new(visible_range.end, 0),
3783 editor_snapshot,
3784 window,
3785 )?;
3786
3787 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3788 let (source_display_point, position) = match mouse_context_menu.position {
3789 MenuPosition::PinnedToScreen(point) => (None, point),
3790 MenuPosition::PinnedToEditor { source, offset } => {
3791 let source_display_point = source.to_display_point(editor_snapshot);
3792 let source_point = editor.to_pixel_point(source, editor_snapshot, window)?;
3793 let position = content_origin + source_point + offset;
3794 (Some(source_display_point), position)
3795 }
3796 };
3797
3798 let source_included = source_display_point.map_or(true, |source_display_point| {
3799 visible_range
3800 .to_inclusive()
3801 .contains(&source_display_point.row())
3802 });
3803 let position_included =
3804 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
3805 if !source_included && !position_included {
3806 None
3807 } else {
3808 Some(position)
3809 }
3810 })?;
3811
3812 let text_style = TextStyleRefinement {
3813 line_height: Some(DefiniteLength::Fraction(
3814 BufferLineHeight::Comfortable.value(),
3815 )),
3816 ..Default::default()
3817 };
3818 window.with_text_style(Some(text_style), |window| {
3819 let mut element = self.editor.update(cx, |editor, _| {
3820 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3821 let context_menu = mouse_context_menu.context_menu.clone();
3822
3823 Some(
3824 deferred(
3825 anchored()
3826 .position(position)
3827 .child(context_menu)
3828 .anchor(Corner::TopLeft)
3829 .snap_to_window_with_margin(px(8.)),
3830 )
3831 .with_priority(1)
3832 .into_any(),
3833 )
3834 })?;
3835
3836 element.prepaint_as_root(position, AvailableSpace::min_size(), window, cx);
3837 Some(element)
3838 })
3839 }
3840
3841 fn layout_hover_popovers(
3842 &self,
3843 snapshot: &EditorSnapshot,
3844 hitbox: &Hitbox,
3845 text_hitbox: &Hitbox,
3846 visible_display_row_range: Range<DisplayRow>,
3847 content_origin: gpui::Point<Pixels>,
3848 scroll_pixel_position: gpui::Point<Pixels>,
3849 line_layouts: &[LineWithInvisibles],
3850 line_height: Pixels,
3851 em_width: Pixels,
3852 window: &mut Window,
3853 cx: &mut App,
3854 ) {
3855 struct MeasuredHoverPopover {
3856 element: AnyElement,
3857 size: Size<Pixels>,
3858 horizontal_offset: Pixels,
3859 }
3860
3861 let max_size = size(
3862 (120. * em_width) // Default size
3863 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3864 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3865 (16. * line_height) // Default size
3866 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3867 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3868 );
3869
3870 let hover_popovers = self.editor.update(cx, |editor, cx| {
3871 editor
3872 .hover_state
3873 .render(snapshot, visible_display_row_range.clone(), max_size, cx)
3874 });
3875 let Some((position, hover_popovers)) = hover_popovers else {
3876 return;
3877 };
3878
3879 // This is safe because we check on layout whether the required row is available
3880 let hovered_row_layout =
3881 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
3882
3883 // Compute Hovered Point
3884 let x =
3885 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
3886 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
3887 let hovered_point = content_origin + point(x, y);
3888
3889 let mut overall_height = Pixels::ZERO;
3890 let mut measured_hover_popovers = Vec::new();
3891 for mut hover_popover in hover_popovers {
3892 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), window, cx);
3893 let horizontal_offset =
3894 (text_hitbox.top_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
3895
3896 overall_height += HOVER_POPOVER_GAP + size.height;
3897
3898 measured_hover_popovers.push(MeasuredHoverPopover {
3899 element: hover_popover,
3900 size,
3901 horizontal_offset,
3902 });
3903 }
3904 overall_height += HOVER_POPOVER_GAP;
3905
3906 fn draw_occluder(
3907 width: Pixels,
3908 origin: gpui::Point<Pixels>,
3909 window: &mut Window,
3910 cx: &mut App,
3911 ) {
3912 let mut occlusion = div()
3913 .size_full()
3914 .occlude()
3915 .on_mouse_move(|_, _, cx| cx.stop_propagation())
3916 .into_any_element();
3917 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), window, cx);
3918 window.defer_draw(occlusion, origin, 2);
3919 }
3920
3921 if hovered_point.y > overall_height {
3922 // There is enough space above. Render popovers above the hovered point
3923 let mut current_y = hovered_point.y;
3924 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3925 let size = popover.size;
3926 let popover_origin = point(
3927 hovered_point.x + popover.horizontal_offset,
3928 current_y - size.height,
3929 );
3930
3931 window.defer_draw(popover.element, popover_origin, 2);
3932 if position != itertools::Position::Last {
3933 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
3934 draw_occluder(size.width, origin, window, cx);
3935 }
3936
3937 current_y = popover_origin.y - HOVER_POPOVER_GAP;
3938 }
3939 } else {
3940 // There is not enough space above. Render popovers below the hovered point
3941 let mut current_y = hovered_point.y + line_height;
3942 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3943 let size = popover.size;
3944 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
3945
3946 window.defer_draw(popover.element, popover_origin, 2);
3947 if position != itertools::Position::Last {
3948 let origin = point(popover_origin.x, popover_origin.y + size.height);
3949 draw_occluder(size.width, origin, window, cx);
3950 }
3951
3952 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
3953 }
3954 }
3955 }
3956
3957 fn layout_diff_hunk_controls(
3958 &self,
3959 row_range: Range<DisplayRow>,
3960 row_infos: &[RowInfo],
3961 text_hitbox: &Hitbox,
3962 position_map: &PositionMap,
3963 newest_cursor_position: Option<DisplayPoint>,
3964 line_height: Pixels,
3965 scroll_pixel_position: gpui::Point<Pixels>,
3966 display_hunks: &[(DisplayDiffHunk, Option<Hitbox>)],
3967 editor: Entity<Editor>,
3968 window: &mut Window,
3969 cx: &mut App,
3970 ) -> Vec<AnyElement> {
3971 let render_diff_hunk_controls = editor.read(cx).render_diff_hunk_controls.clone();
3972 let point_for_position = position_map.point_for_position(window.mouse_position());
3973
3974 let mut controls = vec![];
3975
3976 let active_positions = [
3977 Some(point_for_position.previous_valid),
3978 newest_cursor_position,
3979 ];
3980
3981 for (hunk, _) in display_hunks {
3982 if let DisplayDiffHunk::Unfolded {
3983 display_row_range,
3984 multi_buffer_range,
3985 status,
3986 is_created_file,
3987 ..
3988 } = &hunk
3989 {
3990 if display_row_range.start < row_range.start
3991 || display_row_range.start >= row_range.end
3992 {
3993 continue;
3994 }
3995 let row_ix = (display_row_range.start - row_range.start).0 as usize;
3996 if row_infos[row_ix].diff_status.is_none() {
3997 continue;
3998 }
3999 if row_infos[row_ix]
4000 .diff_status
4001 .is_some_and(|status| status.is_added())
4002 && !status.is_added()
4003 {
4004 continue;
4005 }
4006 if active_positions
4007 .iter()
4008 .any(|p| p.map_or(false, |p| display_row_range.contains(&p.row())))
4009 {
4010 let y = display_row_range.start.as_f32() * line_height
4011 + text_hitbox.bounds.top()
4012 - scroll_pixel_position.y;
4013
4014 let mut element = render_diff_hunk_controls(
4015 display_row_range.start.0,
4016 status,
4017 multi_buffer_range.clone(),
4018 *is_created_file,
4019 line_height,
4020 &editor,
4021 window,
4022 cx,
4023 );
4024 let size =
4025 element.layout_as_root(size(px(100.0), line_height).into(), window, cx);
4026
4027 let x = text_hitbox.bounds.right()
4028 - self.style.scrollbar_width
4029 - px(10.)
4030 - size.width;
4031
4032 window.with_absolute_element_offset(gpui::Point::new(x, y), |window| {
4033 element.prepaint(window, cx)
4034 });
4035 controls.push(element);
4036 }
4037 }
4038 }
4039
4040 controls
4041 }
4042
4043 fn layout_signature_help(
4044 &self,
4045 hitbox: &Hitbox,
4046 content_origin: gpui::Point<Pixels>,
4047 scroll_pixel_position: gpui::Point<Pixels>,
4048 newest_selection_head: Option<DisplayPoint>,
4049 start_row: DisplayRow,
4050 line_layouts: &[LineWithInvisibles],
4051 line_height: Pixels,
4052 em_width: Pixels,
4053 window: &mut Window,
4054 cx: &mut App,
4055 ) {
4056 if !self.editor.focus_handle(cx).is_focused(window) {
4057 return;
4058 }
4059 let Some(newest_selection_head) = newest_selection_head else {
4060 return;
4061 };
4062 let selection_row = newest_selection_head.row();
4063 if selection_row < start_row {
4064 return;
4065 }
4066 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
4067 else {
4068 return;
4069 };
4070
4071 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
4072 - scroll_pixel_position.x
4073 + content_origin.x;
4074 let start_y =
4075 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
4076
4077 let max_size = size(
4078 (120. * em_width) // Default size
4079 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
4080 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
4081 (16. * line_height) // Default size
4082 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
4083 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
4084 );
4085
4086 let maybe_element = self.editor.update(cx, |editor, cx| {
4087 if let Some(popover) = editor.signature_help_state.popover_mut() {
4088 let element = popover.render(max_size, cx);
4089 Some(element)
4090 } else {
4091 None
4092 }
4093 });
4094 if let Some(mut element) = maybe_element {
4095 let window_size = window.viewport_size();
4096 let size = element.layout_as_root(Size::<AvailableSpace>::default(), window, cx);
4097 let mut point = point(start_x, start_y - size.height);
4098
4099 // Adjusting to ensure the popover does not overflow in the X-axis direction.
4100 if point.x + size.width >= window_size.width {
4101 point.x = window_size.width - size.width;
4102 }
4103
4104 window.defer_draw(element, point, 1)
4105 }
4106 }
4107
4108 fn paint_background(&self, layout: &EditorLayout, window: &mut Window, cx: &mut App) {
4109 window.paint_layer(layout.hitbox.bounds, |window| {
4110 let scroll_top = layout.position_map.snapshot.scroll_position().y;
4111 let gutter_bg = cx.theme().colors().editor_gutter_background;
4112 window.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
4113 window.paint_quad(fill(
4114 layout.position_map.text_hitbox.bounds,
4115 self.style.background,
4116 ));
4117
4118 if let EditorMode::Full = layout.mode {
4119 let mut active_rows = layout.active_rows.iter().peekable();
4120 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
4121 let mut end_row = start_row.0;
4122 while active_rows
4123 .peek()
4124 .map_or(false, |(active_row, has_selection)| {
4125 active_row.0 == end_row + 1
4126 && has_selection.selection == contains_non_empty_selection.selection
4127 })
4128 {
4129 active_rows.next().unwrap();
4130 end_row += 1;
4131 }
4132
4133 if !contains_non_empty_selection.selection {
4134 let highlight_h_range =
4135 match layout.position_map.snapshot.current_line_highlight {
4136 CurrentLineHighlight::Gutter => Some(Range {
4137 start: layout.hitbox.left(),
4138 end: layout.gutter_hitbox.right(),
4139 }),
4140 CurrentLineHighlight::Line => Some(Range {
4141 start: layout.position_map.text_hitbox.bounds.left(),
4142 end: layout.position_map.text_hitbox.bounds.right(),
4143 }),
4144 CurrentLineHighlight::All => Some(Range {
4145 start: layout.hitbox.left(),
4146 end: layout.hitbox.right(),
4147 }),
4148 CurrentLineHighlight::None => None,
4149 };
4150 if let Some(range) = highlight_h_range {
4151 let active_line_bg = cx.theme().colors().editor_active_line_background;
4152 let bounds = Bounds {
4153 origin: point(
4154 range.start,
4155 layout.hitbox.origin.y
4156 + (start_row.as_f32() - scroll_top)
4157 * layout.position_map.line_height,
4158 ),
4159 size: size(
4160 range.end - range.start,
4161 layout.position_map.line_height
4162 * (end_row - start_row.0 + 1) as f32,
4163 ),
4164 };
4165 window.paint_quad(fill(bounds, active_line_bg));
4166 }
4167 }
4168 }
4169
4170 let mut paint_highlight = |highlight_row_start: DisplayRow,
4171 highlight_row_end: DisplayRow,
4172 highlight: crate::LineHighlight,
4173 edges| {
4174 let origin = point(
4175 layout.hitbox.origin.x,
4176 layout.hitbox.origin.y
4177 + (highlight_row_start.as_f32() - scroll_top)
4178 * layout.position_map.line_height,
4179 );
4180 let size = size(
4181 layout.hitbox.size.width,
4182 layout.position_map.line_height
4183 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
4184 );
4185 let mut quad = fill(Bounds { origin, size }, highlight.background);
4186 if let Some(border_color) = highlight.border {
4187 quad.border_color = border_color;
4188 quad.border_widths = edges
4189 }
4190 window.paint_quad(quad);
4191 };
4192
4193 let mut current_paint: Option<(LineHighlight, Range<DisplayRow>, Edges<Pixels>)> =
4194 None;
4195 for (&new_row, &new_background) in &layout.highlighted_rows {
4196 match &mut current_paint {
4197 &mut Some((current_background, ref mut current_range, mut edges)) => {
4198 let new_range_started = current_background != new_background
4199 || current_range.end.next_row() != new_row;
4200 if new_range_started {
4201 if current_range.end.next_row() == new_row {
4202 edges.bottom = px(0.);
4203 };
4204 paint_highlight(
4205 current_range.start,
4206 current_range.end,
4207 current_background,
4208 edges,
4209 );
4210 let edges = Edges {
4211 top: if current_range.end.next_row() != new_row {
4212 px(1.)
4213 } else {
4214 px(0.)
4215 },
4216 bottom: px(1.),
4217 ..Default::default()
4218 };
4219 current_paint = Some((new_background, new_row..new_row, edges));
4220 continue;
4221 } else {
4222 current_range.end = current_range.end.next_row();
4223 }
4224 }
4225 None => {
4226 let edges = Edges {
4227 top: px(1.),
4228 bottom: px(1.),
4229 ..Default::default()
4230 };
4231 current_paint = Some((new_background, new_row..new_row, edges))
4232 }
4233 };
4234 }
4235 if let Some((color, range, edges)) = current_paint {
4236 paint_highlight(range.start, range.end, color, edges);
4237 }
4238
4239 let scroll_left =
4240 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
4241
4242 for (wrap_position, active) in layout.wrap_guides.iter() {
4243 let x = (layout.position_map.text_hitbox.origin.x
4244 + *wrap_position
4245 + layout.position_map.em_width / 2.)
4246 - scroll_left;
4247
4248 let show_scrollbars = layout
4249 .scrollbars_layout
4250 .as_ref()
4251 .map_or(false, |layout| layout.visible);
4252
4253 if x < layout.position_map.text_hitbox.origin.x
4254 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
4255 {
4256 continue;
4257 }
4258
4259 let color = if *active {
4260 cx.theme().colors().editor_active_wrap_guide
4261 } else {
4262 cx.theme().colors().editor_wrap_guide
4263 };
4264 window.paint_quad(fill(
4265 Bounds {
4266 origin: point(x, layout.position_map.text_hitbox.origin.y),
4267 size: size(px(1.), layout.position_map.text_hitbox.size.height),
4268 },
4269 color,
4270 ));
4271 }
4272 }
4273 })
4274 }
4275
4276 fn paint_indent_guides(
4277 &mut self,
4278 layout: &mut EditorLayout,
4279 window: &mut Window,
4280 cx: &mut App,
4281 ) {
4282 let Some(indent_guides) = &layout.indent_guides else {
4283 return;
4284 };
4285
4286 let faded_color = |color: Hsla, alpha: f32| {
4287 let mut faded = color;
4288 faded.a = alpha;
4289 faded
4290 };
4291
4292 for indent_guide in indent_guides {
4293 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
4294 let settings = indent_guide.settings;
4295
4296 // TODO fixed for now, expose them through themes later
4297 const INDENT_AWARE_ALPHA: f32 = 0.2;
4298 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
4299 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
4300 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
4301
4302 let line_color = match (settings.coloring, indent_guide.active) {
4303 (IndentGuideColoring::Disabled, _) => None,
4304 (IndentGuideColoring::Fixed, false) => {
4305 Some(cx.theme().colors().editor_indent_guide)
4306 }
4307 (IndentGuideColoring::Fixed, true) => {
4308 Some(cx.theme().colors().editor_indent_guide_active)
4309 }
4310 (IndentGuideColoring::IndentAware, false) => {
4311 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
4312 }
4313 (IndentGuideColoring::IndentAware, true) => {
4314 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
4315 }
4316 };
4317
4318 let background_color = match (settings.background_coloring, indent_guide.active) {
4319 (IndentGuideBackgroundColoring::Disabled, _) => None,
4320 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
4321 indent_accent_colors,
4322 INDENT_AWARE_BACKGROUND_ALPHA,
4323 )),
4324 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
4325 indent_accent_colors,
4326 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
4327 )),
4328 };
4329
4330 let requested_line_width = if indent_guide.active {
4331 settings.active_line_width
4332 } else {
4333 settings.line_width
4334 }
4335 .clamp(1, 10);
4336 let mut line_indicator_width = 0.;
4337 if let Some(color) = line_color {
4338 window.paint_quad(fill(
4339 Bounds {
4340 origin: indent_guide.origin,
4341 size: size(px(requested_line_width as f32), indent_guide.length),
4342 },
4343 color,
4344 ));
4345 line_indicator_width = requested_line_width as f32;
4346 }
4347
4348 if let Some(color) = background_color {
4349 let width = indent_guide.single_indent_width - px(line_indicator_width);
4350 window.paint_quad(fill(
4351 Bounds {
4352 origin: point(
4353 indent_guide.origin.x + px(line_indicator_width),
4354 indent_guide.origin.y,
4355 ),
4356 size: size(width, indent_guide.length),
4357 },
4358 color,
4359 ));
4360 }
4361 }
4362 }
4363
4364 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, window: &mut Window, cx: &mut App) {
4365 let is_singleton = self.editor.read(cx).is_singleton(cx);
4366
4367 let line_height = layout.position_map.line_height;
4368 window.set_cursor_style(CursorStyle::Arrow, Some(&layout.gutter_hitbox));
4369
4370 for LineNumberLayout {
4371 shaped_line,
4372 hitbox,
4373 } in layout.line_numbers.values()
4374 {
4375 let Some(hitbox) = hitbox else {
4376 continue;
4377 };
4378
4379 let Some(()) = (if !is_singleton && hitbox.is_hovered(window) {
4380 let color = cx.theme().colors().editor_hover_line_number;
4381
4382 let Some(line) = self
4383 .shape_line_number(shaped_line.text.clone(), color, window)
4384 .log_err()
4385 else {
4386 continue;
4387 };
4388
4389 line.paint(hitbox.origin, line_height, window, cx).log_err()
4390 } else {
4391 shaped_line
4392 .paint(hitbox.origin, line_height, window, cx)
4393 .log_err()
4394 }) else {
4395 continue;
4396 };
4397
4398 // In singleton buffers, we select corresponding lines on the line number click, so use | -like cursor.
4399 // In multi buffers, we open file at the line number clicked, so use a pointing hand cursor.
4400 if is_singleton {
4401 window.set_cursor_style(CursorStyle::IBeam, Some(&hitbox));
4402 } else {
4403 window.set_cursor_style(CursorStyle::PointingHand, Some(&hitbox));
4404 }
4405 }
4406 }
4407
4408 fn paint_gutter_diff_hunks(layout: &mut EditorLayout, window: &mut Window, cx: &mut App) {
4409 if layout.display_hunks.is_empty() {
4410 return;
4411 }
4412
4413 let line_height = layout.position_map.line_height;
4414 window.paint_layer(layout.gutter_hitbox.bounds, |window| {
4415 for (hunk, hitbox) in &layout.display_hunks {
4416 let hunk_to_paint = match hunk {
4417 DisplayDiffHunk::Folded { .. } => {
4418 let hunk_bounds = Self::diff_hunk_bounds(
4419 &layout.position_map.snapshot,
4420 line_height,
4421 layout.gutter_hitbox.bounds,
4422 &hunk,
4423 );
4424 Some((
4425 hunk_bounds,
4426 cx.theme().colors().version_control_modified,
4427 Corners::all(px(0.)),
4428 DiffHunkStatus::modified_none(),
4429 ))
4430 }
4431 DisplayDiffHunk::Unfolded {
4432 status,
4433 display_row_range,
4434 ..
4435 } => hitbox.as_ref().map(|hunk_hitbox| match status.kind {
4436 DiffHunkStatusKind::Added => (
4437 hunk_hitbox.bounds,
4438 cx.theme().colors().version_control_added,
4439 Corners::all(px(0.)),
4440 *status,
4441 ),
4442 DiffHunkStatusKind::Modified => (
4443 hunk_hitbox.bounds,
4444 cx.theme().colors().version_control_modified,
4445 Corners::all(px(0.)),
4446 *status,
4447 ),
4448 DiffHunkStatusKind::Deleted if !display_row_range.is_empty() => (
4449 hunk_hitbox.bounds,
4450 cx.theme().colors().version_control_deleted,
4451 Corners::all(px(0.)),
4452 *status,
4453 ),
4454 DiffHunkStatusKind::Deleted => (
4455 Bounds::new(
4456 point(
4457 hunk_hitbox.origin.x - hunk_hitbox.size.width,
4458 hunk_hitbox.origin.y,
4459 ),
4460 size(hunk_hitbox.size.width * 2., hunk_hitbox.size.height),
4461 ),
4462 cx.theme().colors().version_control_deleted,
4463 Corners::all(1. * line_height),
4464 *status,
4465 ),
4466 }),
4467 };
4468
4469 if let Some((hunk_bounds, background_color, corner_radii, status)) = hunk_to_paint {
4470 // Flatten the background color with the editor color to prevent
4471 // elements below transparent hunks from showing through
4472 let flattened_background_color = cx
4473 .theme()
4474 .colors()
4475 .editor_background
4476 .blend(background_color);
4477
4478 if !Self::diff_hunk_hollow(status, cx) {
4479 window.paint_quad(quad(
4480 hunk_bounds,
4481 corner_radii,
4482 flattened_background_color,
4483 Edges::default(),
4484 transparent_black(),
4485 BorderStyle::default(),
4486 ));
4487 } else {
4488 let flattened_unstaged_background_color = cx
4489 .theme()
4490 .colors()
4491 .editor_background
4492 .blend(background_color.opacity(0.3));
4493
4494 window.paint_quad(quad(
4495 hunk_bounds,
4496 corner_radii,
4497 flattened_unstaged_background_color,
4498 Edges::all(Pixels(1.0)),
4499 flattened_background_color,
4500 BorderStyle::Solid,
4501 ));
4502 }
4503 }
4504 }
4505 });
4506 }
4507
4508 fn gutter_strip_width(line_height: Pixels) -> Pixels {
4509 (0.275 * line_height).floor()
4510 }
4511
4512 fn diff_hunk_bounds(
4513 snapshot: &EditorSnapshot,
4514 line_height: Pixels,
4515 gutter_bounds: Bounds<Pixels>,
4516 hunk: &DisplayDiffHunk,
4517 ) -> Bounds<Pixels> {
4518 let scroll_position = snapshot.scroll_position();
4519 let scroll_top = scroll_position.y * line_height;
4520 let gutter_strip_width = Self::gutter_strip_width(line_height);
4521
4522 match hunk {
4523 DisplayDiffHunk::Folded { display_row, .. } => {
4524 let start_y = display_row.as_f32() * line_height - scroll_top;
4525 let end_y = start_y + line_height;
4526 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4527 let highlight_size = size(gutter_strip_width, end_y - start_y);
4528 Bounds::new(highlight_origin, highlight_size)
4529 }
4530 DisplayDiffHunk::Unfolded {
4531 display_row_range,
4532 status,
4533 ..
4534 } => {
4535 if status.is_deleted() && display_row_range.is_empty() {
4536 let row = display_row_range.start;
4537
4538 let offset = line_height / 2.;
4539 let start_y = row.as_f32() * line_height - offset - scroll_top;
4540 let end_y = start_y + line_height;
4541
4542 let width = (0.35 * line_height).floor();
4543 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4544 let highlight_size = size(width, end_y - start_y);
4545 Bounds::new(highlight_origin, highlight_size)
4546 } else {
4547 let start_row = display_row_range.start;
4548 let end_row = display_row_range.end;
4549 // If we're in a multibuffer, row range span might include an
4550 // excerpt header, so if we were to draw the marker straight away,
4551 // the hunk might include the rows of that header.
4552 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
4553 // Instead, we simply check whether the range we're dealing with includes
4554 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
4555 let end_row_in_current_excerpt = snapshot
4556 .blocks_in_range(start_row..end_row)
4557 .find_map(|(start_row, block)| {
4558 if matches!(block, Block::ExcerptBoundary { .. }) {
4559 Some(start_row)
4560 } else {
4561 None
4562 }
4563 })
4564 .unwrap_or(end_row);
4565
4566 let start_y = start_row.as_f32() * line_height - scroll_top;
4567 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
4568
4569 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4570 let highlight_size = size(gutter_strip_width, end_y - start_y);
4571 Bounds::new(highlight_origin, highlight_size)
4572 }
4573 }
4574 }
4575 }
4576
4577 fn paint_gutter_indicators(
4578 &self,
4579 layout: &mut EditorLayout,
4580 window: &mut Window,
4581 cx: &mut App,
4582 ) {
4583 window.paint_layer(layout.gutter_hitbox.bounds, |window| {
4584 window.with_element_namespace("crease_toggles", |window| {
4585 for crease_toggle in layout.crease_toggles.iter_mut().flatten() {
4586 crease_toggle.paint(window, cx);
4587 }
4588 });
4589
4590 window.with_element_namespace("expand_toggles", |window| {
4591 for (expand_toggle, _) in layout.expand_toggles.iter_mut().flatten() {
4592 expand_toggle.paint(window, cx);
4593 }
4594 });
4595
4596 for breakpoint in layout.breakpoints.iter_mut() {
4597 breakpoint.paint(window, cx);
4598 }
4599
4600 for test_indicator in layout.test_indicators.iter_mut() {
4601 test_indicator.paint(window, cx);
4602 }
4603
4604 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
4605 indicator.paint(window, cx);
4606 }
4607 });
4608 }
4609
4610 fn paint_gutter_highlights(
4611 &self,
4612 layout: &mut EditorLayout,
4613 window: &mut Window,
4614 cx: &mut App,
4615 ) {
4616 for (_, hunk_hitbox) in &layout.display_hunks {
4617 if let Some(hunk_hitbox) = hunk_hitbox {
4618 if !self
4619 .editor
4620 .read(cx)
4621 .buffer()
4622 .read(cx)
4623 .all_diff_hunks_expanded()
4624 {
4625 window.set_cursor_style(CursorStyle::PointingHand, Some(hunk_hitbox));
4626 }
4627 }
4628 }
4629
4630 let show_git_gutter = layout
4631 .position_map
4632 .snapshot
4633 .show_git_diff_gutter
4634 .unwrap_or_else(|| {
4635 matches!(
4636 ProjectSettings::get_global(cx).git.git_gutter,
4637 Some(GitGutterSetting::TrackedFiles)
4638 )
4639 });
4640 if show_git_gutter {
4641 Self::paint_gutter_diff_hunks(layout, window, cx)
4642 }
4643
4644 let highlight_width = 0.275 * layout.position_map.line_height;
4645 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
4646 window.paint_layer(layout.gutter_hitbox.bounds, |window| {
4647 for (range, color) in &layout.highlighted_gutter_ranges {
4648 let start_row = if range.start.row() < layout.visible_display_row_range.start {
4649 layout.visible_display_row_range.start - DisplayRow(1)
4650 } else {
4651 range.start.row()
4652 };
4653 let end_row = if range.end.row() > layout.visible_display_row_range.end {
4654 layout.visible_display_row_range.end + DisplayRow(1)
4655 } else {
4656 range.end.row()
4657 };
4658
4659 let start_y = layout.gutter_hitbox.top()
4660 + start_row.0 as f32 * layout.position_map.line_height
4661 - layout.position_map.scroll_pixel_position.y;
4662 let end_y = layout.gutter_hitbox.top()
4663 + (end_row.0 + 1) as f32 * layout.position_map.line_height
4664 - layout.position_map.scroll_pixel_position.y;
4665 let bounds = Bounds::from_corners(
4666 point(layout.gutter_hitbox.left(), start_y),
4667 point(layout.gutter_hitbox.left() + highlight_width, end_y),
4668 );
4669 window.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
4670 }
4671 });
4672 }
4673
4674 fn paint_blamed_display_rows(
4675 &self,
4676 layout: &mut EditorLayout,
4677 window: &mut Window,
4678 cx: &mut App,
4679 ) {
4680 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
4681 return;
4682 };
4683
4684 window.paint_layer(layout.gutter_hitbox.bounds, |window| {
4685 for mut blame_element in blamed_display_rows.into_iter() {
4686 blame_element.paint(window, cx);
4687 }
4688 })
4689 }
4690
4691 fn paint_text(&mut self, layout: &mut EditorLayout, window: &mut Window, cx: &mut App) {
4692 window.with_content_mask(
4693 Some(ContentMask {
4694 bounds: layout.position_map.text_hitbox.bounds,
4695 }),
4696 |window| {
4697 let editor = self.editor.read(cx);
4698 if editor.mouse_cursor_hidden {
4699 window.set_cursor_style(CursorStyle::None, None);
4700 } else if editor
4701 .hovered_link_state
4702 .as_ref()
4703 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
4704 {
4705 window.set_cursor_style(
4706 CursorStyle::PointingHand,
4707 Some(&layout.position_map.text_hitbox),
4708 );
4709 } else {
4710 window.set_cursor_style(
4711 CursorStyle::IBeam,
4712 Some(&layout.position_map.text_hitbox),
4713 );
4714 };
4715
4716 self.paint_lines_background(layout, window, cx);
4717 let invisible_display_ranges = self.paint_highlights(layout, window);
4718 self.paint_lines(&invisible_display_ranges, layout, window, cx);
4719 self.paint_redactions(layout, window);
4720 self.paint_cursors(layout, window, cx);
4721 self.paint_inline_diagnostics(layout, window, cx);
4722 self.paint_inline_blame(layout, window, cx);
4723 self.paint_diff_hunk_controls(layout, window, cx);
4724 window.with_element_namespace("crease_trailers", |window| {
4725 for trailer in layout.crease_trailers.iter_mut().flatten() {
4726 trailer.element.paint(window, cx);
4727 }
4728 });
4729 },
4730 )
4731 }
4732
4733 fn paint_highlights(
4734 &mut self,
4735 layout: &mut EditorLayout,
4736 window: &mut Window,
4737 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
4738 window.paint_layer(layout.position_map.text_hitbox.bounds, |window| {
4739 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
4740 let line_end_overshoot = 0.15 * layout.position_map.line_height;
4741 for (range, color) in &layout.highlighted_ranges {
4742 self.paint_highlighted_range(
4743 range.clone(),
4744 *color,
4745 Pixels::ZERO,
4746 line_end_overshoot,
4747 layout,
4748 window,
4749 );
4750 }
4751
4752 let corner_radius = 0.15 * layout.position_map.line_height;
4753
4754 for (player_color, selections) in &layout.selections {
4755 for selection in selections.iter() {
4756 self.paint_highlighted_range(
4757 selection.range.clone(),
4758 player_color.selection,
4759 corner_radius,
4760 corner_radius * 2.,
4761 layout,
4762 window,
4763 );
4764
4765 if selection.is_local && !selection.range.is_empty() {
4766 invisible_display_ranges.push(selection.range.clone());
4767 }
4768 }
4769 }
4770 invisible_display_ranges
4771 })
4772 }
4773
4774 fn paint_lines(
4775 &mut self,
4776 invisible_display_ranges: &[Range<DisplayPoint>],
4777 layout: &mut EditorLayout,
4778 window: &mut Window,
4779 cx: &mut App,
4780 ) {
4781 let whitespace_setting = self
4782 .editor
4783 .read(cx)
4784 .buffer
4785 .read(cx)
4786 .language_settings(cx)
4787 .show_whitespaces;
4788
4789 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
4790 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
4791 line_with_invisibles.draw(
4792 layout,
4793 row,
4794 layout.content_origin,
4795 whitespace_setting,
4796 invisible_display_ranges,
4797 window,
4798 cx,
4799 )
4800 }
4801
4802 for line_element in &mut layout.line_elements {
4803 line_element.paint(window, cx);
4804 }
4805 }
4806
4807 fn paint_lines_background(
4808 &mut self,
4809 layout: &mut EditorLayout,
4810 window: &mut Window,
4811 cx: &mut App,
4812 ) {
4813 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
4814 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
4815 line_with_invisibles.draw_background(layout, row, layout.content_origin, window, cx);
4816 }
4817 }
4818
4819 fn paint_redactions(&mut self, layout: &EditorLayout, window: &mut Window) {
4820 if layout.redacted_ranges.is_empty() {
4821 return;
4822 }
4823
4824 let line_end_overshoot = layout.line_end_overshoot();
4825
4826 // A softer than perfect black
4827 let redaction_color = gpui::rgb(0x0e1111);
4828
4829 window.paint_layer(layout.position_map.text_hitbox.bounds, |window| {
4830 for range in layout.redacted_ranges.iter() {
4831 self.paint_highlighted_range(
4832 range.clone(),
4833 redaction_color.into(),
4834 Pixels::ZERO,
4835 line_end_overshoot,
4836 layout,
4837 window,
4838 );
4839 }
4840 });
4841 }
4842
4843 fn paint_cursors(&mut self, layout: &mut EditorLayout, window: &mut Window, cx: &mut App) {
4844 for cursor in &mut layout.visible_cursors {
4845 cursor.paint(layout.content_origin, window, cx);
4846 }
4847 }
4848
4849 fn paint_scrollbars(&mut self, layout: &mut EditorLayout, window: &mut Window, cx: &mut App) {
4850 let Some(scrollbars_layout) = &layout.scrollbars_layout else {
4851 return;
4852 };
4853
4854 for (scrollbar_layout, axis) in scrollbars_layout.iter_scrollbars() {
4855 let hitbox = &scrollbar_layout.hitbox;
4856 let thumb_bounds = scrollbar_layout.thumb_bounds();
4857
4858 if scrollbars_layout.visible {
4859 let scrollbar_edges = match axis {
4860 ScrollbarAxis::Horizontal => Edges {
4861 top: Pixels::ZERO,
4862 right: Pixels::ZERO,
4863 bottom: Pixels::ZERO,
4864 left: Pixels::ZERO,
4865 },
4866 ScrollbarAxis::Vertical => Edges {
4867 top: Pixels::ZERO,
4868 right: Pixels::ZERO,
4869 bottom: Pixels::ZERO,
4870 left: ScrollbarLayout::BORDER_WIDTH,
4871 },
4872 };
4873
4874 window.paint_layer(hitbox.bounds, |window| {
4875 window.paint_quad(quad(
4876 hitbox.bounds,
4877 Corners::default(),
4878 cx.theme().colors().scrollbar_track_background,
4879 scrollbar_edges,
4880 cx.theme().colors().scrollbar_track_border,
4881 BorderStyle::Solid,
4882 ));
4883
4884 if axis == ScrollbarAxis::Vertical {
4885 let fast_markers =
4886 self.collect_fast_scrollbar_markers(layout, &scrollbar_layout, cx);
4887 // Refresh slow scrollbar markers in the background. Below, we
4888 // paint whatever markers have already been computed.
4889 self.refresh_slow_scrollbar_markers(layout, &scrollbar_layout, window, cx);
4890
4891 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
4892 for marker in markers.iter().chain(&fast_markers) {
4893 let mut marker = marker.clone();
4894 marker.bounds.origin += hitbox.origin;
4895 window.paint_quad(marker);
4896 }
4897 }
4898
4899 window.paint_quad(quad(
4900 thumb_bounds,
4901 Corners::default(),
4902 cx.theme().colors().scrollbar_thumb_background,
4903 scrollbar_edges,
4904 cx.theme().colors().scrollbar_thumb_border,
4905 BorderStyle::Solid,
4906 ));
4907 })
4908 }
4909 window.set_cursor_style(CursorStyle::Arrow, Some(&hitbox));
4910 }
4911
4912 window.on_mouse_event({
4913 let editor = self.editor.clone();
4914 let scrollbars_layout = scrollbars_layout.clone();
4915
4916 let mut mouse_position = window.mouse_position();
4917 move |event: &MouseMoveEvent, phase, window, cx| {
4918 if phase == DispatchPhase::Capture {
4919 return;
4920 }
4921
4922 editor.update(cx, |editor, cx| {
4923 if let Some((scrollbar_layout, axis)) = event
4924 .pressed_button
4925 .filter(|button| *button == MouseButton::Left)
4926 .and(editor.scroll_manager.dragging_scrollbar_axis())
4927 .and_then(|axis| {
4928 scrollbars_layout
4929 .iter_scrollbars()
4930 .find(|(_, a)| *a == axis)
4931 })
4932 {
4933 let ScrollbarLayout {
4934 hitbox,
4935 text_unit_size,
4936 ..
4937 } = scrollbar_layout;
4938
4939 let old_position = mouse_position.along(axis);
4940 let new_position = event.position.along(axis);
4941 if (hitbox.origin.along(axis)..hitbox.bottom_right().along(axis))
4942 .contains(&old_position)
4943 {
4944 let position = editor.scroll_position(cx).apply_along(axis, |p| {
4945 (p + (new_position - old_position) / *text_unit_size).max(0.)
4946 });
4947 editor.set_scroll_position(position, window, cx);
4948 }
4949 cx.stop_propagation();
4950 } else {
4951 editor.scroll_manager.reset_scrollbar_dragging_state(cx);
4952 }
4953
4954 if scrollbars_layout.get_hovered_axis(window).is_some() {
4955 editor.scroll_manager.show_scrollbars(window, cx);
4956 }
4957
4958 mouse_position = event.position;
4959 })
4960 }
4961 });
4962
4963 if self.editor.read(cx).scroll_manager.any_scrollbar_dragged() {
4964 window.on_mouse_event({
4965 let editor = self.editor.clone();
4966 move |_: &MouseUpEvent, phase, _, cx| {
4967 if phase == DispatchPhase::Capture {
4968 return;
4969 }
4970
4971 editor.update(cx, |editor, cx| {
4972 editor.scroll_manager.reset_scrollbar_dragging_state(cx);
4973 cx.stop_propagation();
4974 });
4975 }
4976 });
4977 } else {
4978 window.on_mouse_event({
4979 let editor = self.editor.clone();
4980 let scrollbars_layout = scrollbars_layout.clone();
4981
4982 move |event: &MouseDownEvent, phase, window, cx| {
4983 if phase == DispatchPhase::Capture {
4984 return;
4985 }
4986 let Some((scrollbar_layout, axis)) = scrollbars_layout.get_hovered_axis(window)
4987 else {
4988 return;
4989 };
4990
4991 let ScrollbarLayout {
4992 hitbox,
4993 visible_range,
4994 text_unit_size,
4995 ..
4996 } = scrollbar_layout;
4997
4998 let thumb_bounds = scrollbar_layout.thumb_bounds();
4999
5000 editor.update(cx, |editor, cx| {
5001 editor.scroll_manager.set_dragged_scrollbar_axis(axis, cx);
5002
5003 let event_position = event.position.along(axis);
5004
5005 if event_position < thumb_bounds.origin.along(axis)
5006 || thumb_bounds.bottom_right().along(axis) < event_position
5007 {
5008 let center_position = ((event_position - hitbox.origin.along(axis))
5009 / *text_unit_size)
5010 .round() as u32;
5011 let start_position = center_position.saturating_sub(
5012 (visible_range.end - visible_range.start) as u32 / 2,
5013 );
5014
5015 let position = editor
5016 .scroll_position(cx)
5017 .apply_along(axis, |_| start_position as f32);
5018
5019 editor.set_scroll_position(position, window, cx);
5020 } else {
5021 editor.scroll_manager.show_scrollbars(window, cx);
5022 }
5023
5024 cx.stop_propagation();
5025 });
5026 }
5027 });
5028 }
5029 }
5030
5031 fn collect_fast_scrollbar_markers(
5032 &self,
5033 layout: &EditorLayout,
5034 scrollbar_layout: &ScrollbarLayout,
5035 cx: &mut App,
5036 ) -> Vec<PaintQuad> {
5037 const LIMIT: usize = 100;
5038 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
5039 return vec![];
5040 }
5041 let cursor_ranges = layout
5042 .cursors
5043 .iter()
5044 .map(|(point, color)| ColoredRange {
5045 start: point.row(),
5046 end: point.row(),
5047 color: *color,
5048 })
5049 .collect_vec();
5050 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
5051 }
5052
5053 fn refresh_slow_scrollbar_markers(
5054 &self,
5055 layout: &EditorLayout,
5056 scrollbar_layout: &ScrollbarLayout,
5057 window: &mut Window,
5058 cx: &mut App,
5059 ) {
5060 self.editor.update(cx, |editor, cx| {
5061 if !editor.is_singleton(cx)
5062 || !editor
5063 .scrollbar_marker_state
5064 .should_refresh(scrollbar_layout.hitbox.size)
5065 {
5066 return;
5067 }
5068
5069 let scrollbar_layout = scrollbar_layout.clone();
5070 let background_highlights = editor.background_highlights.clone();
5071 let snapshot = layout.position_map.snapshot.clone();
5072 let theme = cx.theme().clone();
5073 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
5074
5075 editor.scrollbar_marker_state.dirty = false;
5076 editor.scrollbar_marker_state.pending_refresh =
5077 Some(cx.spawn_in(window, async move |editor, cx| {
5078 let scrollbar_size = scrollbar_layout.hitbox.size;
5079 let scrollbar_markers = cx
5080 .background_spawn(async move {
5081 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
5082 let mut marker_quads = Vec::new();
5083 if scrollbar_settings.git_diff {
5084 let marker_row_ranges =
5085 snapshot.buffer_snapshot.diff_hunks().map(|hunk| {
5086 let start_display_row =
5087 MultiBufferPoint::new(hunk.row_range.start.0, 0)
5088 .to_display_point(&snapshot.display_snapshot)
5089 .row();
5090 let mut end_display_row =
5091 MultiBufferPoint::new(hunk.row_range.end.0, 0)
5092 .to_display_point(&snapshot.display_snapshot)
5093 .row();
5094 if end_display_row != start_display_row {
5095 end_display_row.0 -= 1;
5096 }
5097 let color = match &hunk.status().kind {
5098 DiffHunkStatusKind::Added => {
5099 theme.colors().version_control_added
5100 }
5101 DiffHunkStatusKind::Modified => {
5102 theme.colors().version_control_modified
5103 }
5104 DiffHunkStatusKind::Deleted => {
5105 theme.colors().version_control_deleted
5106 }
5107 };
5108 ColoredRange {
5109 start: start_display_row,
5110 end: end_display_row,
5111 color,
5112 }
5113 });
5114
5115 marker_quads.extend(
5116 scrollbar_layout
5117 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
5118 );
5119 }
5120
5121 for (background_highlight_id, (_, background_ranges)) in
5122 background_highlights.iter()
5123 {
5124 let is_search_highlights = *background_highlight_id
5125 == TypeId::of::<BufferSearchHighlights>();
5126 let is_text_highlights = *background_highlight_id
5127 == TypeId::of::<SelectedTextHighlight>();
5128 let is_symbol_occurrences = *background_highlight_id
5129 == TypeId::of::<DocumentHighlightRead>()
5130 || *background_highlight_id
5131 == TypeId::of::<DocumentHighlightWrite>();
5132 if (is_search_highlights && scrollbar_settings.search_results)
5133 || (is_text_highlights && scrollbar_settings.selected_text)
5134 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
5135 {
5136 let mut color = theme.status().info;
5137 if is_symbol_occurrences {
5138 color.fade_out(0.5);
5139 }
5140 let marker_row_ranges = background_ranges.iter().map(|range| {
5141 let display_start = range
5142 .start
5143 .to_display_point(&snapshot.display_snapshot);
5144 let display_end =
5145 range.end.to_display_point(&snapshot.display_snapshot);
5146 ColoredRange {
5147 start: display_start.row(),
5148 end: display_end.row(),
5149 color,
5150 }
5151 });
5152 marker_quads.extend(
5153 scrollbar_layout
5154 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
5155 );
5156 }
5157 }
5158
5159 if scrollbar_settings.diagnostics != ScrollbarDiagnostics::None {
5160 let diagnostics = snapshot
5161 .buffer_snapshot
5162 .diagnostics_in_range::<Point>(Point::zero()..max_point)
5163 // Don't show diagnostics the user doesn't care about
5164 .filter(|diagnostic| {
5165 match (
5166 scrollbar_settings.diagnostics,
5167 diagnostic.diagnostic.severity,
5168 ) {
5169 (ScrollbarDiagnostics::All, _) => true,
5170 (
5171 ScrollbarDiagnostics::Error,
5172 DiagnosticSeverity::ERROR,
5173 ) => true,
5174 (
5175 ScrollbarDiagnostics::Warning,
5176 DiagnosticSeverity::ERROR
5177 | DiagnosticSeverity::WARNING,
5178 ) => true,
5179 (
5180 ScrollbarDiagnostics::Information,
5181 DiagnosticSeverity::ERROR
5182 | DiagnosticSeverity::WARNING
5183 | DiagnosticSeverity::INFORMATION,
5184 ) => true,
5185 (_, _) => false,
5186 }
5187 })
5188 // We want to sort by severity, in order to paint the most severe diagnostics last.
5189 .sorted_by_key(|diagnostic| {
5190 std::cmp::Reverse(diagnostic.diagnostic.severity)
5191 });
5192
5193 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
5194 let start_display = diagnostic
5195 .range
5196 .start
5197 .to_display_point(&snapshot.display_snapshot);
5198 let end_display = diagnostic
5199 .range
5200 .end
5201 .to_display_point(&snapshot.display_snapshot);
5202 let color = match diagnostic.diagnostic.severity {
5203 DiagnosticSeverity::ERROR => theme.status().error,
5204 DiagnosticSeverity::WARNING => theme.status().warning,
5205 DiagnosticSeverity::INFORMATION => theme.status().info,
5206 _ => theme.status().hint,
5207 };
5208 ColoredRange {
5209 start: start_display.row(),
5210 end: end_display.row(),
5211 color,
5212 }
5213 });
5214 marker_quads.extend(
5215 scrollbar_layout
5216 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
5217 );
5218 }
5219
5220 Arc::from(marker_quads)
5221 })
5222 .await;
5223
5224 editor.update(cx, |editor, cx| {
5225 editor.scrollbar_marker_state.markers = scrollbar_markers;
5226 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
5227 editor.scrollbar_marker_state.pending_refresh = None;
5228 cx.notify();
5229 })?;
5230
5231 Ok(())
5232 }));
5233 });
5234 }
5235
5236 fn paint_highlighted_range(
5237 &self,
5238 range: Range<DisplayPoint>,
5239 color: Hsla,
5240 corner_radius: Pixels,
5241 line_end_overshoot: Pixels,
5242 layout: &EditorLayout,
5243 window: &mut Window,
5244 ) {
5245 let start_row = layout.visible_display_row_range.start;
5246 let end_row = layout.visible_display_row_range.end;
5247 if range.start != range.end {
5248 let row_range = if range.end.column() == 0 {
5249 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
5250 } else {
5251 cmp::max(range.start.row(), start_row)
5252 ..cmp::min(range.end.row().next_row(), end_row)
5253 };
5254
5255 let highlighted_range = HighlightedRange {
5256 color,
5257 line_height: layout.position_map.line_height,
5258 corner_radius,
5259 start_y: layout.content_origin.y
5260 + row_range.start.as_f32() * layout.position_map.line_height
5261 - layout.position_map.scroll_pixel_position.y,
5262 lines: row_range
5263 .iter_rows()
5264 .map(|row| {
5265 let line_layout =
5266 &layout.position_map.line_layouts[row.minus(start_row) as usize];
5267 HighlightedRangeLine {
5268 start_x: if row == range.start.row() {
5269 layout.content_origin.x
5270 + line_layout.x_for_index(range.start.column() as usize)
5271 - layout.position_map.scroll_pixel_position.x
5272 } else {
5273 layout.content_origin.x
5274 - layout.position_map.scroll_pixel_position.x
5275 },
5276 end_x: if row == range.end.row() {
5277 layout.content_origin.x
5278 + line_layout.x_for_index(range.end.column() as usize)
5279 - layout.position_map.scroll_pixel_position.x
5280 } else {
5281 layout.content_origin.x + line_layout.width + line_end_overshoot
5282 - layout.position_map.scroll_pixel_position.x
5283 },
5284 }
5285 })
5286 .collect(),
5287 };
5288
5289 highlighted_range.paint(layout.position_map.text_hitbox.bounds, window);
5290 }
5291 }
5292
5293 fn paint_inline_diagnostics(
5294 &mut self,
5295 layout: &mut EditorLayout,
5296 window: &mut Window,
5297 cx: &mut App,
5298 ) {
5299 for mut inline_diagnostic in layout.inline_diagnostics.drain() {
5300 inline_diagnostic.1.paint(window, cx);
5301 }
5302 }
5303
5304 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, window: &mut Window, cx: &mut App) {
5305 if let Some(mut inline_blame) = layout.inline_blame.take() {
5306 window.paint_layer(layout.position_map.text_hitbox.bounds, |window| {
5307 inline_blame.paint(window, cx);
5308 })
5309 }
5310 }
5311
5312 fn paint_diff_hunk_controls(
5313 &mut self,
5314 layout: &mut EditorLayout,
5315 window: &mut Window,
5316 cx: &mut App,
5317 ) {
5318 for mut diff_hunk_control in layout.diff_hunk_controls.drain(..) {
5319 diff_hunk_control.paint(window, cx);
5320 }
5321 }
5322
5323 fn paint_blocks(&mut self, layout: &mut EditorLayout, window: &mut Window, cx: &mut App) {
5324 for mut block in layout.blocks.drain(..) {
5325 block.element.paint(window, cx);
5326 }
5327 }
5328
5329 fn paint_inline_completion_popover(
5330 &mut self,
5331 layout: &mut EditorLayout,
5332 window: &mut Window,
5333 cx: &mut App,
5334 ) {
5335 if let Some(inline_completion_popover) = layout.inline_completion_popover.as_mut() {
5336 inline_completion_popover.paint(window, cx);
5337 }
5338 }
5339
5340 fn paint_mouse_context_menu(
5341 &mut self,
5342 layout: &mut EditorLayout,
5343 window: &mut Window,
5344 cx: &mut App,
5345 ) {
5346 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
5347 mouse_context_menu.paint(window, cx);
5348 }
5349 }
5350
5351 fn paint_scroll_wheel_listener(
5352 &mut self,
5353 layout: &EditorLayout,
5354 window: &mut Window,
5355 cx: &mut App,
5356 ) {
5357 window.on_mouse_event({
5358 let position_map = layout.position_map.clone();
5359 let editor = self.editor.clone();
5360 let hitbox = layout.hitbox.clone();
5361 let mut delta = ScrollDelta::default();
5362
5363 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
5364 // accidentally turn off their scrolling.
5365 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
5366
5367 move |event: &ScrollWheelEvent, phase, window, cx| {
5368 if phase == DispatchPhase::Bubble && hitbox.is_hovered(window) {
5369 delta = delta.coalesce(event.delta);
5370 editor.update(cx, |editor, cx| {
5371 let position_map: &PositionMap = &position_map;
5372
5373 let line_height = position_map.line_height;
5374 let max_glyph_width = position_map.em_width;
5375 let (delta, axis) = match delta {
5376 gpui::ScrollDelta::Pixels(mut pixels) => {
5377 //Trackpad
5378 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
5379 (pixels, axis)
5380 }
5381
5382 gpui::ScrollDelta::Lines(lines) => {
5383 //Not trackpad
5384 let pixels =
5385 point(lines.x * max_glyph_width, lines.y * line_height);
5386 (pixels, None)
5387 }
5388 };
5389
5390 let current_scroll_position = position_map.snapshot.scroll_position();
5391 let x = (current_scroll_position.x * max_glyph_width
5392 - (delta.x * scroll_sensitivity))
5393 / max_glyph_width;
5394 let y = (current_scroll_position.y * line_height
5395 - (delta.y * scroll_sensitivity))
5396 / line_height;
5397 let mut scroll_position =
5398 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
5399 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
5400 if forbid_vertical_scroll {
5401 scroll_position.y = current_scroll_position.y;
5402 }
5403
5404 if scroll_position != current_scroll_position {
5405 editor.scroll(scroll_position, axis, window, cx);
5406 cx.stop_propagation();
5407 } else if y < 0. {
5408 // Due to clamping, we may fail to detect cases of overscroll to the top;
5409 // We want the scroll manager to get an update in such cases and detect the change of direction
5410 // on the next frame.
5411 cx.notify();
5412 }
5413 });
5414 }
5415 }
5416 });
5417 }
5418
5419 fn paint_mouse_listeners(&mut self, layout: &EditorLayout, window: &mut Window, cx: &mut App) {
5420 self.paint_scroll_wheel_listener(layout, window, cx);
5421
5422 window.on_mouse_event({
5423 let position_map = layout.position_map.clone();
5424 let editor = self.editor.clone();
5425 let diff_hunk_range =
5426 layout
5427 .display_hunks
5428 .iter()
5429 .find_map(|(hunk, hunk_hitbox)| match hunk {
5430 DisplayDiffHunk::Folded { .. } => None,
5431 DisplayDiffHunk::Unfolded {
5432 multi_buffer_range, ..
5433 } => {
5434 if hunk_hitbox
5435 .as_ref()
5436 .map(|hitbox| hitbox.is_hovered(window))
5437 .unwrap_or(false)
5438 {
5439 Some(multi_buffer_range.clone())
5440 } else {
5441 None
5442 }
5443 }
5444 });
5445 let line_numbers = layout.line_numbers.clone();
5446
5447 move |event: &MouseDownEvent, phase, window, cx| {
5448 if phase == DispatchPhase::Bubble {
5449 match event.button {
5450 MouseButton::Left => editor.update(cx, |editor, cx| {
5451 let pending_mouse_down = editor
5452 .pending_mouse_down
5453 .get_or_insert_with(Default::default)
5454 .clone();
5455
5456 *pending_mouse_down.borrow_mut() = Some(event.clone());
5457
5458 Self::mouse_left_down(
5459 editor,
5460 event,
5461 diff_hunk_range.clone(),
5462 &position_map,
5463 line_numbers.as_ref(),
5464 window,
5465 cx,
5466 );
5467 }),
5468 MouseButton::Right => editor.update(cx, |editor, cx| {
5469 Self::mouse_right_down(editor, event, &position_map, window, cx);
5470 }),
5471 MouseButton::Middle => editor.update(cx, |editor, cx| {
5472 Self::mouse_middle_down(editor, event, &position_map, window, cx);
5473 }),
5474 _ => {}
5475 };
5476 }
5477 }
5478 });
5479
5480 window.on_mouse_event({
5481 let editor = self.editor.clone();
5482 let position_map = layout.position_map.clone();
5483
5484 move |event: &MouseUpEvent, phase, window, cx| {
5485 if phase == DispatchPhase::Bubble {
5486 editor.update(cx, |editor, cx| {
5487 Self::mouse_up(editor, event, &position_map, window, cx)
5488 });
5489 }
5490 }
5491 });
5492
5493 window.on_mouse_event({
5494 let editor = self.editor.clone();
5495 let position_map = layout.position_map.clone();
5496 let mut captured_mouse_down = None;
5497
5498 move |event: &MouseUpEvent, phase, window, cx| match phase {
5499 // Clear the pending mouse down during the capture phase,
5500 // so that it happens even if another event handler stops
5501 // propagation.
5502 DispatchPhase::Capture => editor.update(cx, |editor, _cx| {
5503 let pending_mouse_down = editor
5504 .pending_mouse_down
5505 .get_or_insert_with(Default::default)
5506 .clone();
5507
5508 let mut pending_mouse_down = pending_mouse_down.borrow_mut();
5509 if pending_mouse_down.is_some() && position_map.text_hitbox.is_hovered(window) {
5510 captured_mouse_down = pending_mouse_down.take();
5511 window.refresh();
5512 }
5513 }),
5514 // Fire click handlers during the bubble phase.
5515 DispatchPhase::Bubble => editor.update(cx, |editor, cx| {
5516 if let Some(mouse_down) = captured_mouse_down.take() {
5517 let event = ClickEvent {
5518 down: mouse_down,
5519 up: event.clone(),
5520 };
5521 Self::click(editor, &event, &position_map, window, cx);
5522 }
5523 }),
5524 }
5525 });
5526
5527 window.on_mouse_event({
5528 let position_map = layout.position_map.clone();
5529 let editor = self.editor.clone();
5530
5531 move |event: &MouseMoveEvent, phase, window, cx| {
5532 if phase == DispatchPhase::Bubble {
5533 editor.update(cx, |editor, cx| {
5534 if editor.hover_state.focused(window, cx) {
5535 return;
5536 }
5537 if event.pressed_button == Some(MouseButton::Left)
5538 || event.pressed_button == Some(MouseButton::Middle)
5539 {
5540 Self::mouse_dragged(editor, event, &position_map, window, cx)
5541 }
5542
5543 Self::mouse_moved(editor, event, &position_map, window, cx)
5544 });
5545 }
5546 }
5547 });
5548 }
5549
5550 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
5551 bounds.top_right().x - self.style.scrollbar_width
5552 }
5553
5554 fn column_pixels(&self, column: usize, window: &mut Window, _: &mut App) -> Pixels {
5555 let style = &self.style;
5556 let font_size = style.text.font_size.to_pixels(window.rem_size());
5557 let layout = window
5558 .text_system()
5559 .shape_line(
5560 SharedString::from(" ".repeat(column)),
5561 font_size,
5562 &[TextRun {
5563 len: column,
5564 font: style.text.font(),
5565 color: Hsla::default(),
5566 background_color: None,
5567 underline: None,
5568 strikethrough: None,
5569 }],
5570 )
5571 .unwrap();
5572
5573 layout.width
5574 }
5575
5576 fn max_line_number_width(
5577 &self,
5578 snapshot: &EditorSnapshot,
5579 window: &mut Window,
5580 cx: &mut App,
5581 ) -> Pixels {
5582 let digit_count = snapshot.widest_line_number().ilog10() + 1;
5583 self.column_pixels(digit_count as usize, window, cx)
5584 }
5585
5586 fn shape_line_number(
5587 &self,
5588 text: SharedString,
5589 color: Hsla,
5590 window: &mut Window,
5591 ) -> anyhow::Result<ShapedLine> {
5592 let run = TextRun {
5593 len: text.len(),
5594 font: self.style.text.font(),
5595 color,
5596 background_color: None,
5597 underline: None,
5598 strikethrough: None,
5599 };
5600 window.text_system().shape_line(
5601 text,
5602 self.style.text.font_size.to_pixels(window.rem_size()),
5603 &[run],
5604 )
5605 }
5606
5607 fn diff_hunk_hollow(status: DiffHunkStatus, cx: &mut App) -> bool {
5608 let unstaged = status.has_secondary_hunk();
5609 let unstaged_hollow = ProjectSettings::get_global(cx)
5610 .git
5611 .hunk_style
5612 .map_or(false, |style| {
5613 matches!(style, GitHunkStyleSetting::UnstagedHollow)
5614 });
5615
5616 unstaged == unstaged_hollow
5617 }
5618}
5619
5620fn header_jump_data(
5621 snapshot: &EditorSnapshot,
5622 block_row_start: DisplayRow,
5623 height: u32,
5624 for_excerpt: &ExcerptInfo,
5625) -> JumpData {
5626 let range = &for_excerpt.range;
5627 let buffer = &for_excerpt.buffer;
5628 let jump_anchor = range.primary.start;
5629
5630 let excerpt_start = range.context.start;
5631 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
5632 let rows_from_excerpt_start = if jump_anchor == excerpt_start {
5633 0
5634 } else {
5635 let excerpt_start_point = language::ToPoint::to_point(&excerpt_start, buffer);
5636 jump_position.row.saturating_sub(excerpt_start_point.row)
5637 };
5638
5639 let line_offset_from_top = (block_row_start.0 + height + rows_from_excerpt_start)
5640 .saturating_sub(
5641 snapshot
5642 .scroll_anchor
5643 .scroll_position(&snapshot.display_snapshot)
5644 .y as u32,
5645 );
5646
5647 JumpData::MultiBufferPoint {
5648 excerpt_id: for_excerpt.id,
5649 anchor: jump_anchor,
5650 position: jump_position,
5651 line_offset_from_top,
5652 }
5653}
5654
5655pub struct AcceptEditPredictionBinding(pub(crate) Option<gpui::KeyBinding>);
5656
5657impl AcceptEditPredictionBinding {
5658 pub fn keystroke(&self) -> Option<&Keystroke> {
5659 if let Some(binding) = self.0.as_ref() {
5660 match &binding.keystrokes() {
5661 [keystroke] => Some(keystroke),
5662 _ => None,
5663 }
5664 } else {
5665 None
5666 }
5667 }
5668}
5669
5670fn prepaint_gutter_button(
5671 button: IconButton,
5672 row: DisplayRow,
5673 line_height: Pixels,
5674 gutter_dimensions: &GutterDimensions,
5675 scroll_pixel_position: gpui::Point<Pixels>,
5676 gutter_hitbox: &Hitbox,
5677 display_hunks: &[(DisplayDiffHunk, Option<Hitbox>)],
5678 window: &mut Window,
5679 cx: &mut App,
5680) -> AnyElement {
5681 let mut button = button.into_any_element();
5682
5683 let available_space = size(
5684 AvailableSpace::MinContent,
5685 AvailableSpace::Definite(line_height),
5686 );
5687 let indicator_size = button.layout_as_root(available_space, window, cx);
5688
5689 let blame_width = gutter_dimensions.git_blame_entries_width;
5690 let gutter_width = display_hunks
5691 .binary_search_by(|(hunk, _)| match hunk {
5692 DisplayDiffHunk::Folded { display_row } => display_row.cmp(&row),
5693 DisplayDiffHunk::Unfolded {
5694 display_row_range, ..
5695 } => {
5696 if display_row_range.end <= row {
5697 Ordering::Less
5698 } else if display_row_range.start > row {
5699 Ordering::Greater
5700 } else {
5701 Ordering::Equal
5702 }
5703 }
5704 })
5705 .ok()
5706 .and_then(|ix| Some(display_hunks[ix].1.as_ref()?.size.width));
5707 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
5708
5709 let mut x = left_offset;
5710 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
5711 - indicator_size.width
5712 - left_offset;
5713 x += available_width / 2.;
5714
5715 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
5716 y += (line_height - indicator_size.height) / 2.;
5717
5718 button.prepaint_as_root(
5719 gutter_hitbox.origin + point(x, y),
5720 available_space,
5721 window,
5722 cx,
5723 );
5724 button
5725}
5726
5727fn render_inline_blame_entry(
5728 editor: Entity<Editor>,
5729 workspace: WeakEntity<Workspace>,
5730 blame: &Entity<GitBlame>,
5731 blame_entry: BlameEntry,
5732 style: &EditorStyle,
5733 cx: &mut App,
5734) -> Option<AnyElement> {
5735 let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
5736 let blame = blame.read(cx);
5737 let details = blame.details_for_entry(&blame_entry);
5738 let repository = blame.repository(cx)?.clone();
5739 renderer.render_inline_blame_entry(
5740 &style.text,
5741 blame_entry,
5742 details,
5743 repository,
5744 workspace,
5745 editor,
5746 cx,
5747 )
5748}
5749
5750fn render_blame_entry(
5751 ix: usize,
5752 blame: &Entity<GitBlame>,
5753 blame_entry: BlameEntry,
5754 style: &EditorStyle,
5755 last_used_color: &mut Option<(PlayerColor, Oid)>,
5756 editor: Entity<Editor>,
5757 workspace: Entity<Workspace>,
5758 renderer: Arc<dyn BlameRenderer>,
5759 cx: &mut App,
5760) -> Option<AnyElement> {
5761 let mut sha_color = cx
5762 .theme()
5763 .players()
5764 .color_for_participant(blame_entry.sha.into());
5765
5766 // If the last color we used is the same as the one we get for this line, but
5767 // the commit SHAs are different, then we try again to get a different color.
5768 match *last_used_color {
5769 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
5770 let index: u32 = blame_entry.sha.into();
5771 sha_color = cx.theme().players().color_for_participant(index + 1);
5772 }
5773 _ => {}
5774 };
5775 last_used_color.replace((sha_color, blame_entry.sha));
5776
5777 let blame = blame.read(cx);
5778 let details = blame.details_for_entry(&blame_entry);
5779 let repository = blame.repository(cx)?;
5780 renderer.render_blame_entry(
5781 &style.text,
5782 blame_entry,
5783 details,
5784 repository,
5785 workspace.downgrade(),
5786 editor,
5787 ix,
5788 sha_color.cursor,
5789 cx,
5790 )
5791}
5792
5793#[derive(Debug)]
5794pub(crate) struct LineWithInvisibles {
5795 fragments: SmallVec<[LineFragment; 1]>,
5796 invisibles: Vec<Invisible>,
5797 len: usize,
5798 pub(crate) width: Pixels,
5799 font_size: Pixels,
5800}
5801
5802#[allow(clippy::large_enum_variant)]
5803enum LineFragment {
5804 Text(ShapedLine),
5805 Element {
5806 id: FoldId,
5807 element: Option<AnyElement>,
5808 size: Size<Pixels>,
5809 len: usize,
5810 },
5811}
5812
5813impl fmt::Debug for LineFragment {
5814 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
5815 match self {
5816 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
5817 LineFragment::Element { size, len, .. } => f
5818 .debug_struct("Element")
5819 .field("size", size)
5820 .field("len", len)
5821 .finish(),
5822 }
5823 }
5824}
5825
5826impl LineWithInvisibles {
5827 fn from_chunks<'a>(
5828 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
5829 editor_style: &EditorStyle,
5830 max_line_len: usize,
5831 max_line_count: usize,
5832 editor_mode: EditorMode,
5833 text_width: Pixels,
5834 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
5835 window: &mut Window,
5836 cx: &mut App,
5837 ) -> Vec<Self> {
5838 let text_style = &editor_style.text;
5839 let mut layouts = Vec::with_capacity(max_line_count);
5840 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
5841 let mut line = String::new();
5842 let mut invisibles = Vec::new();
5843 let mut width = Pixels::ZERO;
5844 let mut len = 0;
5845 let mut styles = Vec::new();
5846 let mut non_whitespace_added = false;
5847 let mut row = 0;
5848 let mut line_exceeded_max_len = false;
5849 let font_size = text_style.font_size.to_pixels(window.rem_size());
5850
5851 let ellipsis = SharedString::from("⋯");
5852
5853 for highlighted_chunk in chunks.chain([HighlightedChunk {
5854 text: "\n",
5855 style: None,
5856 is_tab: false,
5857 replacement: None,
5858 }]) {
5859 if let Some(replacement) = highlighted_chunk.replacement {
5860 if !line.is_empty() {
5861 let shaped_line = window
5862 .text_system()
5863 .shape_line(line.clone().into(), font_size, &styles)
5864 .unwrap();
5865 width += shaped_line.width;
5866 len += shaped_line.len;
5867 fragments.push(LineFragment::Text(shaped_line));
5868 line.clear();
5869 styles.clear();
5870 }
5871
5872 match replacement {
5873 ChunkReplacement::Renderer(renderer) => {
5874 let available_width = if renderer.constrain_width {
5875 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
5876 ellipsis.clone()
5877 } else {
5878 SharedString::from(Arc::from(highlighted_chunk.text))
5879 };
5880 let shaped_line = window
5881 .text_system()
5882 .shape_line(
5883 chunk,
5884 font_size,
5885 &[text_style.to_run(highlighted_chunk.text.len())],
5886 )
5887 .unwrap();
5888 AvailableSpace::Definite(shaped_line.width)
5889 } else {
5890 AvailableSpace::MinContent
5891 };
5892
5893 let mut element = (renderer.render)(&mut ChunkRendererContext {
5894 context: cx,
5895 window,
5896 max_width: text_width,
5897 });
5898 let line_height = text_style.line_height_in_pixels(window.rem_size());
5899 let size = element.layout_as_root(
5900 size(available_width, AvailableSpace::Definite(line_height)),
5901 window,
5902 cx,
5903 );
5904
5905 width += size.width;
5906 len += highlighted_chunk.text.len();
5907 fragments.push(LineFragment::Element {
5908 id: renderer.id,
5909 element: Some(element),
5910 size,
5911 len: highlighted_chunk.text.len(),
5912 });
5913 }
5914 ChunkReplacement::Str(x) => {
5915 let text_style = if let Some(style) = highlighted_chunk.style {
5916 Cow::Owned(text_style.clone().highlight(style))
5917 } else {
5918 Cow::Borrowed(text_style)
5919 };
5920
5921 let run = TextRun {
5922 len: x.len(),
5923 font: text_style.font(),
5924 color: text_style.color,
5925 background_color: text_style.background_color,
5926 underline: text_style.underline,
5927 strikethrough: text_style.strikethrough,
5928 };
5929 let line_layout = window
5930 .text_system()
5931 .shape_line(x, font_size, &[run])
5932 .unwrap()
5933 .with_len(highlighted_chunk.text.len());
5934
5935 width += line_layout.width;
5936 len += highlighted_chunk.text.len();
5937 fragments.push(LineFragment::Text(line_layout))
5938 }
5939 }
5940 } else {
5941 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
5942 if ix > 0 {
5943 let shaped_line = window
5944 .text_system()
5945 .shape_line(line.clone().into(), font_size, &styles)
5946 .unwrap();
5947 width += shaped_line.width;
5948 len += shaped_line.len;
5949 fragments.push(LineFragment::Text(shaped_line));
5950 layouts.push(Self {
5951 width: mem::take(&mut width),
5952 len: mem::take(&mut len),
5953 fragments: mem::take(&mut fragments),
5954 invisibles: std::mem::take(&mut invisibles),
5955 font_size,
5956 });
5957
5958 line.clear();
5959 styles.clear();
5960 row += 1;
5961 line_exceeded_max_len = false;
5962 non_whitespace_added = false;
5963 if row == max_line_count {
5964 return layouts;
5965 }
5966 }
5967
5968 if !line_chunk.is_empty() && !line_exceeded_max_len {
5969 let text_style = if let Some(style) = highlighted_chunk.style {
5970 Cow::Owned(text_style.clone().highlight(style))
5971 } else {
5972 Cow::Borrowed(text_style)
5973 };
5974
5975 if line.len() + line_chunk.len() > max_line_len {
5976 let mut chunk_len = max_line_len - line.len();
5977 while !line_chunk.is_char_boundary(chunk_len) {
5978 chunk_len -= 1;
5979 }
5980 line_chunk = &line_chunk[..chunk_len];
5981 line_exceeded_max_len = true;
5982 }
5983
5984 styles.push(TextRun {
5985 len: line_chunk.len(),
5986 font: text_style.font(),
5987 color: text_style.color,
5988 background_color: text_style.background_color,
5989 underline: text_style.underline,
5990 strikethrough: text_style.strikethrough,
5991 });
5992
5993 if editor_mode == EditorMode::Full {
5994 // Line wrap pads its contents with fake whitespaces,
5995 // avoid printing them
5996 let is_soft_wrapped = is_row_soft_wrapped(row);
5997 if highlighted_chunk.is_tab {
5998 if non_whitespace_added || !is_soft_wrapped {
5999 invisibles.push(Invisible::Tab {
6000 line_start_offset: line.len(),
6001 line_end_offset: line.len() + line_chunk.len(),
6002 });
6003 }
6004 } else {
6005 invisibles.extend(line_chunk.char_indices().filter_map(
6006 |(index, c)| {
6007 let is_whitespace = c.is_whitespace();
6008 non_whitespace_added |= !is_whitespace;
6009 if is_whitespace
6010 && (non_whitespace_added || !is_soft_wrapped)
6011 {
6012 Some(Invisible::Whitespace {
6013 line_offset: line.len() + index,
6014 })
6015 } else {
6016 None
6017 }
6018 },
6019 ))
6020 }
6021 }
6022
6023 line.push_str(line_chunk);
6024 }
6025 }
6026 }
6027 }
6028
6029 layouts
6030 }
6031
6032 fn prepaint(
6033 &mut self,
6034 line_height: Pixels,
6035 scroll_pixel_position: gpui::Point<Pixels>,
6036 row: DisplayRow,
6037 content_origin: gpui::Point<Pixels>,
6038 line_elements: &mut SmallVec<[AnyElement; 1]>,
6039 window: &mut Window,
6040 cx: &mut App,
6041 ) {
6042 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
6043 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
6044 for fragment in &mut self.fragments {
6045 match fragment {
6046 LineFragment::Text(line) => {
6047 fragment_origin.x += line.width;
6048 }
6049 LineFragment::Element { element, size, .. } => {
6050 let mut element = element
6051 .take()
6052 .expect("you can't prepaint LineWithInvisibles twice");
6053
6054 // Center the element vertically within the line.
6055 let mut element_origin = fragment_origin;
6056 element_origin.y += (line_height - size.height) / 2.;
6057 element.prepaint_at(element_origin, window, cx);
6058 line_elements.push(element);
6059
6060 fragment_origin.x += size.width;
6061 }
6062 }
6063 }
6064 }
6065
6066 fn draw(
6067 &self,
6068 layout: &EditorLayout,
6069 row: DisplayRow,
6070 content_origin: gpui::Point<Pixels>,
6071 whitespace_setting: ShowWhitespaceSetting,
6072 selection_ranges: &[Range<DisplayPoint>],
6073 window: &mut Window,
6074 cx: &mut App,
6075 ) {
6076 let line_height = layout.position_map.line_height;
6077 let line_y = line_height
6078 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
6079
6080 let mut fragment_origin =
6081 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
6082
6083 for fragment in &self.fragments {
6084 match fragment {
6085 LineFragment::Text(line) => {
6086 line.paint(fragment_origin, line_height, window, cx)
6087 .log_err();
6088 fragment_origin.x += line.width;
6089 }
6090 LineFragment::Element { size, .. } => {
6091 fragment_origin.x += size.width;
6092 }
6093 }
6094 }
6095
6096 self.draw_invisibles(
6097 selection_ranges,
6098 layout,
6099 content_origin,
6100 line_y,
6101 row,
6102 line_height,
6103 whitespace_setting,
6104 window,
6105 cx,
6106 );
6107 }
6108
6109 fn draw_background(
6110 &self,
6111 layout: &EditorLayout,
6112 row: DisplayRow,
6113 content_origin: gpui::Point<Pixels>,
6114 window: &mut Window,
6115 cx: &mut App,
6116 ) {
6117 let line_height = layout.position_map.line_height;
6118 let line_y = line_height
6119 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
6120
6121 let mut fragment_origin =
6122 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
6123
6124 for fragment in &self.fragments {
6125 match fragment {
6126 LineFragment::Text(line) => {
6127 line.paint_background(fragment_origin, line_height, window, cx)
6128 .log_err();
6129 fragment_origin.x += line.width;
6130 }
6131 LineFragment::Element { size, .. } => {
6132 fragment_origin.x += size.width;
6133 }
6134 }
6135 }
6136 }
6137
6138 fn draw_invisibles(
6139 &self,
6140 selection_ranges: &[Range<DisplayPoint>],
6141 layout: &EditorLayout,
6142 content_origin: gpui::Point<Pixels>,
6143 line_y: Pixels,
6144 row: DisplayRow,
6145 line_height: Pixels,
6146 whitespace_setting: ShowWhitespaceSetting,
6147 window: &mut Window,
6148 cx: &mut App,
6149 ) {
6150 let extract_whitespace_info = |invisible: &Invisible| {
6151 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
6152 Invisible::Tab {
6153 line_start_offset,
6154 line_end_offset,
6155 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
6156 Invisible::Whitespace { line_offset } => {
6157 (*line_offset, line_offset + 1, &layout.space_invisible)
6158 }
6159 };
6160
6161 let x_offset = self.x_for_index(token_offset);
6162 let invisible_offset =
6163 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
6164 let origin = content_origin
6165 + gpui::point(
6166 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
6167 line_y,
6168 );
6169
6170 (
6171 [token_offset, token_end_offset],
6172 Box::new(move |window: &mut Window, cx: &mut App| {
6173 invisible_symbol
6174 .paint(origin, line_height, window, cx)
6175 .log_err();
6176 }),
6177 )
6178 };
6179
6180 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
6181 match whitespace_setting {
6182 ShowWhitespaceSetting::None => (),
6183 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(window, cx)),
6184 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
6185 let invisible_point = DisplayPoint::new(row, start as u32);
6186 if !selection_ranges
6187 .iter()
6188 .any(|region| region.start <= invisible_point && invisible_point < region.end)
6189 {
6190 return;
6191 }
6192
6193 paint(window, cx);
6194 }),
6195
6196 // For a whitespace to be on a boundary, any of the following conditions need to be met:
6197 // - It is a tab
6198 // - It is adjacent to an edge (start or end)
6199 // - It is adjacent to a whitespace (left or right)
6200 ShowWhitespaceSetting::Boundary => {
6201 // We'll need to keep track of the last invisible we've seen and then check if we are adjacent to it for some of
6202 // the above cases.
6203 // Note: We zip in the original `invisibles` to check for tab equality
6204 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut Window, &mut App)>)> = None;
6205 for (([start, end], paint), invisible) in
6206 invisible_iter.zip_eq(self.invisibles.iter())
6207 {
6208 let should_render = match (&last_seen, invisible) {
6209 (_, Invisible::Tab { .. }) => true,
6210 (Some((_, last_end, _)), _) => *last_end == start,
6211 _ => false,
6212 };
6213
6214 if should_render || start == 0 || end == self.len {
6215 paint(window, cx);
6216
6217 // Since we are scanning from the left, we will skip over the first available whitespace that is part
6218 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
6219 if let Some((should_render_last, last_end, paint_last)) = last_seen {
6220 // Note that we need to make sure that the last one is actually adjacent
6221 if !should_render_last && last_end == start {
6222 paint_last(window, cx);
6223 }
6224 }
6225 }
6226
6227 // Manually render anything within a selection
6228 let invisible_point = DisplayPoint::new(row, start as u32);
6229 if selection_ranges.iter().any(|region| {
6230 region.start <= invisible_point && invisible_point < region.end
6231 }) {
6232 paint(window, cx);
6233 }
6234
6235 last_seen = Some((should_render, end, paint));
6236 }
6237 }
6238 }
6239 }
6240
6241 pub fn x_for_index(&self, index: usize) -> Pixels {
6242 let mut fragment_start_x = Pixels::ZERO;
6243 let mut fragment_start_index = 0;
6244
6245 for fragment in &self.fragments {
6246 match fragment {
6247 LineFragment::Text(shaped_line) => {
6248 let fragment_end_index = fragment_start_index + shaped_line.len;
6249 if index < fragment_end_index {
6250 return fragment_start_x
6251 + shaped_line.x_for_index(index - fragment_start_index);
6252 }
6253 fragment_start_x += shaped_line.width;
6254 fragment_start_index = fragment_end_index;
6255 }
6256 LineFragment::Element { len, size, .. } => {
6257 let fragment_end_index = fragment_start_index + len;
6258 if index < fragment_end_index {
6259 return fragment_start_x;
6260 }
6261 fragment_start_x += size.width;
6262 fragment_start_index = fragment_end_index;
6263 }
6264 }
6265 }
6266
6267 fragment_start_x
6268 }
6269
6270 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
6271 let mut fragment_start_x = Pixels::ZERO;
6272 let mut fragment_start_index = 0;
6273
6274 for fragment in &self.fragments {
6275 match fragment {
6276 LineFragment::Text(shaped_line) => {
6277 let fragment_end_x = fragment_start_x + shaped_line.width;
6278 if x < fragment_end_x {
6279 return Some(
6280 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
6281 );
6282 }
6283 fragment_start_x = fragment_end_x;
6284 fragment_start_index += shaped_line.len;
6285 }
6286 LineFragment::Element { len, size, .. } => {
6287 let fragment_end_x = fragment_start_x + size.width;
6288 if x < fragment_end_x {
6289 return Some(fragment_start_index);
6290 }
6291 fragment_start_index += len;
6292 fragment_start_x = fragment_end_x;
6293 }
6294 }
6295 }
6296
6297 None
6298 }
6299
6300 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
6301 let mut fragment_start_index = 0;
6302
6303 for fragment in &self.fragments {
6304 match fragment {
6305 LineFragment::Text(shaped_line) => {
6306 let fragment_end_index = fragment_start_index + shaped_line.len;
6307 if index < fragment_end_index {
6308 return shaped_line.font_id_for_index(index - fragment_start_index);
6309 }
6310 fragment_start_index = fragment_end_index;
6311 }
6312 LineFragment::Element { len, .. } => {
6313 let fragment_end_index = fragment_start_index + len;
6314 if index < fragment_end_index {
6315 return None;
6316 }
6317 fragment_start_index = fragment_end_index;
6318 }
6319 }
6320 }
6321
6322 None
6323 }
6324}
6325
6326#[derive(Debug, Clone, Copy, PartialEq, Eq)]
6327enum Invisible {
6328 /// A tab character
6329 ///
6330 /// A tab character is internally represented by spaces (configured by the user's tab width)
6331 /// aligned to the nearest column, so it's necessary to store the start and end offset for
6332 /// adjacency checks.
6333 Tab {
6334 line_start_offset: usize,
6335 line_end_offset: usize,
6336 },
6337 Whitespace {
6338 line_offset: usize,
6339 },
6340}
6341
6342impl EditorElement {
6343 /// Returns the rem size to use when rendering the [`EditorElement`].
6344 ///
6345 /// This allows UI elements to scale based on the `buffer_font_size`.
6346 fn rem_size(&self, cx: &mut App) -> Option<Pixels> {
6347 match self.editor.read(cx).mode {
6348 EditorMode::Full => {
6349 let buffer_font_size = self.style.text.font_size;
6350 match buffer_font_size {
6351 AbsoluteLength::Pixels(pixels) => {
6352 let rem_size_scale = {
6353 // Our default UI font size is 14px on a 16px base scale.
6354 // This means the default UI font size is 0.875rems.
6355 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
6356
6357 // We then determine the delta between a single rem and the default font
6358 // size scale.
6359 let default_font_size_delta = 1. - default_font_size_scale;
6360
6361 // Finally, we add this delta to 1rem to get the scale factor that
6362 // should be used to scale up the UI.
6363 1. + default_font_size_delta
6364 };
6365
6366 Some(pixels * rem_size_scale)
6367 }
6368 AbsoluteLength::Rems(rems) => {
6369 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
6370 }
6371 }
6372 }
6373 // We currently use single-line and auto-height editors in UI contexts,
6374 // so we don't want to scale everything with the buffer font size, as it
6375 // ends up looking off.
6376 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
6377 }
6378 }
6379}
6380
6381impl Element for EditorElement {
6382 type RequestLayoutState = ();
6383 type PrepaintState = EditorLayout;
6384
6385 fn id(&self) -> Option<ElementId> {
6386 None
6387 }
6388
6389 fn request_layout(
6390 &mut self,
6391 _: Option<&GlobalElementId>,
6392 window: &mut Window,
6393 cx: &mut App,
6394 ) -> (gpui::LayoutId, ()) {
6395 let rem_size = self.rem_size(cx);
6396 window.with_rem_size(rem_size, |window| {
6397 self.editor.update(cx, |editor, cx| {
6398 editor.set_style(self.style.clone(), window, cx);
6399
6400 let layout_id = match editor.mode {
6401 EditorMode::SingleLine { auto_width } => {
6402 let rem_size = window.rem_size();
6403
6404 let height = self.style.text.line_height_in_pixels(rem_size);
6405 if auto_width {
6406 let editor_handle = cx.entity().clone();
6407 let style = self.style.clone();
6408 window.request_measured_layout(
6409 Style::default(),
6410 move |_, _, window, cx| {
6411 let editor_snapshot = editor_handle
6412 .update(cx, |editor, cx| editor.snapshot(window, cx));
6413 let line = Self::layout_lines(
6414 DisplayRow(0)..DisplayRow(1),
6415 &editor_snapshot,
6416 &style,
6417 px(f32::MAX),
6418 |_| false, // Single lines never soft wrap
6419 window,
6420 cx,
6421 )
6422 .pop()
6423 .unwrap();
6424
6425 let font_id =
6426 window.text_system().resolve_font(&style.text.font());
6427 let font_size =
6428 style.text.font_size.to_pixels(window.rem_size());
6429 let em_width =
6430 window.text_system().em_width(font_id, font_size).unwrap();
6431
6432 size(line.width + em_width, height)
6433 },
6434 )
6435 } else {
6436 let mut style = Style::default();
6437 style.size.height = height.into();
6438 style.size.width = relative(1.).into();
6439 window.request_layout(style, None, cx)
6440 }
6441 }
6442 EditorMode::AutoHeight { max_lines } => {
6443 let editor_handle = cx.entity().clone();
6444 let max_line_number_width =
6445 self.max_line_number_width(&editor.snapshot(window, cx), window, cx);
6446 window.request_measured_layout(
6447 Style::default(),
6448 move |known_dimensions, available_space, window, cx| {
6449 editor_handle
6450 .update(cx, |editor, cx| {
6451 compute_auto_height_layout(
6452 editor,
6453 max_lines,
6454 max_line_number_width,
6455 known_dimensions,
6456 available_space.width,
6457 window,
6458 cx,
6459 )
6460 })
6461 .unwrap_or_default()
6462 },
6463 )
6464 }
6465 EditorMode::Full => {
6466 let mut style = Style::default();
6467 style.size.width = relative(1.).into();
6468 style.size.height = relative(1.).into();
6469 window.request_layout(style, None, cx)
6470 }
6471 };
6472
6473 (layout_id, ())
6474 })
6475 })
6476 }
6477
6478 fn prepaint(
6479 &mut self,
6480 _: Option<&GlobalElementId>,
6481 bounds: Bounds<Pixels>,
6482 _: &mut Self::RequestLayoutState,
6483 window: &mut Window,
6484 cx: &mut App,
6485 ) -> Self::PrepaintState {
6486 let text_style = TextStyleRefinement {
6487 font_size: Some(self.style.text.font_size),
6488 line_height: Some(self.style.text.line_height),
6489 ..Default::default()
6490 };
6491 let focus_handle = self.editor.focus_handle(cx);
6492 window.set_view_id(self.editor.entity_id());
6493 window.set_focus_handle(&focus_handle, cx);
6494
6495 let rem_size = self.rem_size(cx);
6496 window.with_rem_size(rem_size, |window| {
6497 window.with_text_style(Some(text_style), |window| {
6498 window.with_content_mask(Some(ContentMask { bounds }), |window| {
6499 let (mut snapshot, is_read_only) = self.editor.update(cx, |editor, cx| {
6500 (editor.snapshot(window, cx), editor.read_only(cx))
6501 });
6502 let style = self.style.clone();
6503
6504 let font_id = window.text_system().resolve_font(&style.text.font());
6505 let font_size = style.text.font_size.to_pixels(window.rem_size());
6506 let line_height = style.text.line_height_in_pixels(window.rem_size());
6507 let em_width = window.text_system().em_width(font_id, font_size).unwrap();
6508 let em_advance = window.text_system().em_advance(font_id, font_size).unwrap();
6509
6510 let glyph_grid_cell = size(em_width, line_height);
6511
6512 let gutter_dimensions = snapshot
6513 .gutter_dimensions(
6514 font_id,
6515 font_size,
6516 self.max_line_number_width(&snapshot, window, cx),
6517 cx,
6518 )
6519 .unwrap_or_default();
6520 let text_width = bounds.size.width - gutter_dimensions.width;
6521
6522 let editor_width =
6523 text_width - gutter_dimensions.margin - em_width - style.scrollbar_width;
6524
6525 snapshot = self.editor.update(cx, |editor, cx| {
6526 editor.last_bounds = Some(bounds);
6527 editor.gutter_dimensions = gutter_dimensions;
6528 editor.set_visible_line_count(bounds.size.height / line_height, window, cx);
6529
6530 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
6531 snapshot
6532 } else {
6533 let wrap_width = match editor.soft_wrap_mode(cx) {
6534 SoftWrap::GitDiff => None,
6535 SoftWrap::None => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
6536 SoftWrap::EditorWidth => Some(editor_width),
6537 SoftWrap::Column(column) => Some(column as f32 * em_advance),
6538 SoftWrap::Bounded(column) => {
6539 Some(editor_width.min(column as f32 * em_advance))
6540 }
6541 };
6542
6543 if editor.set_wrap_width(wrap_width, cx) {
6544 editor.snapshot(window, cx)
6545 } else {
6546 snapshot
6547 }
6548 }
6549 });
6550
6551 let wrap_guides = self
6552 .editor
6553 .read(cx)
6554 .wrap_guides(cx)
6555 .iter()
6556 .map(|(guide, active)| (self.column_pixels(*guide, window, cx), *active))
6557 .collect::<SmallVec<[_; 2]>>();
6558
6559 let hitbox = window.insert_hitbox(bounds, false);
6560 let gutter_hitbox =
6561 window.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
6562 let text_hitbox = window.insert_hitbox(
6563 Bounds {
6564 origin: gutter_hitbox.top_right(),
6565 size: size(text_width, bounds.size.height),
6566 },
6567 false,
6568 );
6569
6570 // Offset the content_bounds from the text_bounds by the gutter margin (which
6571 // is roughly half a character wide) to make hit testing work more like how we want.
6572 let content_offset = point(gutter_dimensions.margin, Pixels::ZERO);
6573 let content_origin = text_hitbox.origin + content_offset;
6574
6575 let editor_text_bounds =
6576 Bounds::from_corners(content_origin, bounds.bottom_right());
6577
6578 let height_in_lines = editor_text_bounds.size.height / line_height;
6579
6580 let max_row = snapshot.max_point().row().as_f32();
6581
6582 // The max scroll position for the top of the window
6583 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
6584 (max_row - height_in_lines + 1.).max(0.)
6585 } else {
6586 let settings = EditorSettings::get_global(cx);
6587 match settings.scroll_beyond_last_line {
6588 ScrollBeyondLastLine::OnePage => max_row,
6589 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
6590 ScrollBeyondLastLine::VerticalScrollMargin => {
6591 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
6592 .max(0.)
6593 }
6594 }
6595 };
6596
6597 // TODO: Autoscrolling for both axes
6598 let mut autoscroll_request = None;
6599 let mut autoscroll_containing_element = false;
6600 let mut autoscroll_horizontally = false;
6601 self.editor.update(cx, |editor, cx| {
6602 autoscroll_request = editor.autoscroll_request();
6603 autoscroll_containing_element =
6604 autoscroll_request.is_some() || editor.has_pending_selection();
6605 // TODO: Is this horizontal or vertical?!
6606 autoscroll_horizontally = editor.autoscroll_vertically(
6607 bounds,
6608 line_height,
6609 max_scroll_top,
6610 window,
6611 cx,
6612 );
6613 snapshot = editor.snapshot(window, cx);
6614 });
6615
6616 let mut scroll_position = snapshot.scroll_position();
6617 // The scroll position is a fractional point, the whole number of which represents
6618 // the top of the window in terms of display rows.
6619 let start_row = DisplayRow(scroll_position.y as u32);
6620 let max_row = snapshot.max_point().row();
6621 let end_row = cmp::min(
6622 (scroll_position.y + height_in_lines).ceil() as u32,
6623 max_row.next_row().0,
6624 );
6625 let end_row = DisplayRow(end_row);
6626
6627 let row_infos = snapshot
6628 .row_infos(start_row)
6629 .take((start_row..end_row).len())
6630 .collect::<Vec<RowInfo>>();
6631 let is_row_soft_wrapped = |row: usize| {
6632 row_infos
6633 .get(row)
6634 .map_or(true, |info| info.buffer_row.is_none())
6635 };
6636
6637 let start_anchor = if start_row == Default::default() {
6638 Anchor::min()
6639 } else {
6640 snapshot.buffer_snapshot.anchor_before(
6641 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
6642 )
6643 };
6644 let end_anchor = if end_row > max_row {
6645 Anchor::max()
6646 } else {
6647 snapshot.buffer_snapshot.anchor_before(
6648 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
6649 )
6650 };
6651
6652 let mut highlighted_rows = self
6653 .editor
6654 .update(cx, |editor, cx| editor.highlighted_display_rows(window, cx));
6655
6656 let is_light = cx.theme().appearance().is_light();
6657
6658 for (ix, row_info) in row_infos.iter().enumerate() {
6659 let Some(diff_status) = row_info.diff_status else {
6660 continue;
6661 };
6662
6663 let background_color = match diff_status.kind {
6664 DiffHunkStatusKind::Added => cx.theme().colors().version_control_added,
6665 DiffHunkStatusKind::Deleted => {
6666 cx.theme().colors().version_control_deleted
6667 }
6668 DiffHunkStatusKind::Modified => {
6669 debug_panic!("modified diff status for row info");
6670 continue;
6671 }
6672 };
6673
6674 let hunk_opacity = if is_light { 0.16 } else { 0.12 };
6675
6676 let hollow_highlight = LineHighlight {
6677 background: (background_color.opacity(if is_light {
6678 0.08
6679 } else {
6680 0.06
6681 }))
6682 .into(),
6683 border: Some(if is_light {
6684 background_color.opacity(0.48)
6685 } else {
6686 background_color.opacity(0.36)
6687 }),
6688 };
6689
6690 let filled_highlight =
6691 solid_background(background_color.opacity(hunk_opacity)).into();
6692
6693 let background = if Self::diff_hunk_hollow(diff_status, cx) {
6694 hollow_highlight
6695 } else {
6696 filled_highlight
6697 };
6698
6699 highlighted_rows
6700 .entry(start_row + DisplayRow(ix as u32))
6701 .or_insert(background);
6702 }
6703
6704 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
6705 start_anchor..end_anchor,
6706 &snapshot.display_snapshot,
6707 cx.theme().colors(),
6708 );
6709 let highlighted_gutter_ranges =
6710 self.editor.read(cx).gutter_highlights_in_range(
6711 start_anchor..end_anchor,
6712 &snapshot.display_snapshot,
6713 cx,
6714 );
6715
6716 let redacted_ranges = self.editor.read(cx).redacted_ranges(
6717 start_anchor..end_anchor,
6718 &snapshot.display_snapshot,
6719 cx,
6720 );
6721
6722 let (local_selections, selected_buffer_ids): (
6723 Vec<Selection<Point>>,
6724 Vec<BufferId>,
6725 ) = self.editor.update(cx, |editor, cx| {
6726 let all_selections = editor.selections.all::<Point>(cx);
6727 let selected_buffer_ids = if editor.is_singleton(cx) {
6728 Vec::new()
6729 } else {
6730 let mut selected_buffer_ids = Vec::with_capacity(all_selections.len());
6731
6732 for selection in all_selections {
6733 for buffer_id in snapshot
6734 .buffer_snapshot
6735 .buffer_ids_for_range(selection.range())
6736 {
6737 if selected_buffer_ids.last() != Some(&buffer_id) {
6738 selected_buffer_ids.push(buffer_id);
6739 }
6740 }
6741 }
6742
6743 selected_buffer_ids
6744 };
6745
6746 let mut selections = editor
6747 .selections
6748 .disjoint_in_range(start_anchor..end_anchor, cx);
6749 selections.extend(editor.selections.pending(cx));
6750
6751 (selections, selected_buffer_ids)
6752 });
6753
6754 let (selections, mut active_rows, newest_selection_head) = self
6755 .layout_selections(
6756 start_anchor,
6757 end_anchor,
6758 &local_selections,
6759 &snapshot,
6760 start_row,
6761 end_row,
6762 window,
6763 cx,
6764 );
6765 let mut breakpoint_rows = self.editor.update(cx, |editor, cx| {
6766 editor.active_breakpoints(start_row..end_row, window, cx)
6767 });
6768 if cx.has_flag::<Debugger>() {
6769 for display_row in breakpoint_rows.keys() {
6770 active_rows.entry(*display_row).or_default().breakpoint = true;
6771 }
6772 }
6773
6774 let line_numbers = self.layout_line_numbers(
6775 Some(&gutter_hitbox),
6776 gutter_dimensions,
6777 line_height,
6778 scroll_position,
6779 start_row..end_row,
6780 &row_infos,
6781 &active_rows,
6782 newest_selection_head,
6783 &snapshot,
6784 window,
6785 cx,
6786 );
6787
6788 // We add the gutter breakpoint indicator to breakpoint_rows after painting
6789 // line numbers so we don't paint a line number debug accent color if a user
6790 // has their mouse over that line when a breakpoint isn't there
6791 if cx.has_flag::<Debugger>() {
6792 let gutter_breakpoint_indicator =
6793 self.editor.read(cx).gutter_breakpoint_indicator.0;
6794 if let Some((gutter_breakpoint_point, _)) =
6795 gutter_breakpoint_indicator.filter(|(_, is_active)| *is_active)
6796 {
6797 breakpoint_rows
6798 .entry(gutter_breakpoint_point.row())
6799 .or_insert_with(|| {
6800 let position = snapshot.display_point_to_anchor(
6801 gutter_breakpoint_point,
6802 Bias::Right,
6803 );
6804 let breakpoint = Breakpoint::new_standard();
6805
6806 (position, breakpoint)
6807 });
6808 }
6809 }
6810
6811 let mut expand_toggles =
6812 window.with_element_namespace("expand_toggles", |window| {
6813 self.layout_expand_toggles(
6814 &gutter_hitbox,
6815 gutter_dimensions,
6816 em_width,
6817 line_height,
6818 scroll_position,
6819 &row_infos,
6820 window,
6821 cx,
6822 )
6823 });
6824
6825 let mut crease_toggles =
6826 window.with_element_namespace("crease_toggles", |window| {
6827 self.layout_crease_toggles(
6828 start_row..end_row,
6829 &row_infos,
6830 &active_rows,
6831 &snapshot,
6832 window,
6833 cx,
6834 )
6835 });
6836 let crease_trailers =
6837 window.with_element_namespace("crease_trailers", |window| {
6838 self.layout_crease_trailers(
6839 row_infos.iter().copied(),
6840 &snapshot,
6841 window,
6842 cx,
6843 )
6844 });
6845
6846 let display_hunks = self.layout_gutter_diff_hunks(
6847 line_height,
6848 &gutter_hitbox,
6849 start_row..end_row,
6850 &snapshot,
6851 window,
6852 cx,
6853 );
6854
6855 let mut line_layouts = Self::layout_lines(
6856 start_row..end_row,
6857 &snapshot,
6858 &self.style,
6859 editor_width,
6860 is_row_soft_wrapped,
6861 window,
6862 cx,
6863 );
6864 let new_fold_widths = line_layouts
6865 .iter()
6866 .flat_map(|layout| &layout.fragments)
6867 .filter_map(|fragment| {
6868 if let LineFragment::Element { id, size, .. } = fragment {
6869 Some((*id, size.width))
6870 } else {
6871 None
6872 }
6873 });
6874 if self.editor.update(cx, |editor, cx| {
6875 editor.update_fold_widths(new_fold_widths, cx)
6876 }) {
6877 // If the fold widths have changed, we need to prepaint
6878 // the element again to account for any changes in
6879 // wrapping.
6880 return self.prepaint(None, bounds, &mut (), window, cx);
6881 }
6882
6883 let longest_line_blame_width = self
6884 .editor
6885 .update(cx, |editor, cx| {
6886 if !editor.show_git_blame_inline {
6887 return None;
6888 }
6889 let blame = editor.blame.as_ref()?;
6890 let blame_entry = blame
6891 .update(cx, |blame, cx| {
6892 let row_infos =
6893 snapshot.row_infos(snapshot.longest_row()).next()?;
6894 blame.blame_for_rows(&[row_infos], cx).next()
6895 })
6896 .flatten()?;
6897 let mut element = render_inline_blame_entry(
6898 self.editor.clone(),
6899 editor.workspace()?.downgrade(),
6900 blame,
6901 blame_entry,
6902 &style,
6903 cx,
6904 )?;
6905 let inline_blame_padding = INLINE_BLAME_PADDING_EM_WIDTHS * em_advance;
6906 Some(
6907 element
6908 .layout_as_root(AvailableSpace::min_size(), window, cx)
6909 .width
6910 + inline_blame_padding,
6911 )
6912 })
6913 .unwrap_or(Pixels::ZERO);
6914
6915 let longest_line_width = layout_line(
6916 snapshot.longest_row(),
6917 &snapshot,
6918 &style,
6919 editor_width,
6920 is_row_soft_wrapped,
6921 window,
6922 cx,
6923 )
6924 .width;
6925
6926 let scrollbar_layout_information = ScrollbarLayoutInformation::new(
6927 text_hitbox.bounds,
6928 glyph_grid_cell,
6929 size(longest_line_width, max_row.as_f32() * line_height),
6930 longest_line_blame_width,
6931 style.scrollbar_width,
6932 editor_width,
6933 EditorSettings::get_global(cx),
6934 );
6935
6936 let mut scroll_width = scrollbar_layout_information.scroll_range.width;
6937
6938 let sticky_header_excerpt = if snapshot.buffer_snapshot.show_headers() {
6939 snapshot.sticky_header_excerpt(scroll_position.y)
6940 } else {
6941 None
6942 };
6943 let sticky_header_excerpt_id =
6944 sticky_header_excerpt.as_ref().map(|top| top.excerpt.id);
6945
6946 let blocks = window.with_element_namespace("blocks", |window| {
6947 self.render_blocks(
6948 start_row..end_row,
6949 &snapshot,
6950 &hitbox,
6951 &text_hitbox,
6952 editor_width,
6953 &mut scroll_width,
6954 &gutter_dimensions,
6955 em_width,
6956 gutter_dimensions.full_width(),
6957 line_height,
6958 &line_layouts,
6959 &local_selections,
6960 &selected_buffer_ids,
6961 is_row_soft_wrapped,
6962 sticky_header_excerpt_id,
6963 window,
6964 cx,
6965 )
6966 });
6967 let mut blocks = match blocks {
6968 Ok(blocks) => blocks,
6969 Err(resized_blocks) => {
6970 self.editor.update(cx, |editor, cx| {
6971 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
6972 });
6973 return self.prepaint(None, bounds, &mut (), window, cx);
6974 }
6975 };
6976
6977 let sticky_buffer_header = sticky_header_excerpt.map(|sticky_header_excerpt| {
6978 window.with_element_namespace("blocks", |window| {
6979 self.layout_sticky_buffer_header(
6980 sticky_header_excerpt,
6981 scroll_position.y,
6982 line_height,
6983 &snapshot,
6984 &hitbox,
6985 &selected_buffer_ids,
6986 &blocks,
6987 window,
6988 cx,
6989 )
6990 })
6991 });
6992
6993 let start_buffer_row =
6994 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
6995 let end_buffer_row =
6996 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
6997
6998 let scroll_max = point(
6999 ((scroll_width - editor_text_bounds.size.width) / em_width).max(0.0),
7000 max_scroll_top,
7001 );
7002
7003 self.editor.update(cx, |editor, cx| {
7004 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
7005
7006 let autoscrolled = if autoscroll_horizontally {
7007 editor.autoscroll_horizontally(
7008 start_row,
7009 editor_width - (glyph_grid_cell.width / 2.0)
7010 + style.scrollbar_width,
7011 scroll_width,
7012 em_width,
7013 &line_layouts,
7014 cx,
7015 )
7016 } else {
7017 false
7018 };
7019
7020 if clamped || autoscrolled {
7021 snapshot = editor.snapshot(window, cx);
7022 scroll_position = snapshot.scroll_position();
7023 }
7024 });
7025
7026 let scroll_pixel_position = point(
7027 scroll_position.x * em_width,
7028 scroll_position.y * line_height,
7029 );
7030
7031 let indent_guides = self.layout_indent_guides(
7032 content_origin,
7033 text_hitbox.origin,
7034 start_buffer_row..end_buffer_row,
7035 scroll_pixel_position,
7036 line_height,
7037 &snapshot,
7038 window,
7039 cx,
7040 );
7041
7042 let crease_trailers =
7043 window.with_element_namespace("crease_trailers", |window| {
7044 self.prepaint_crease_trailers(
7045 crease_trailers,
7046 &line_layouts,
7047 line_height,
7048 content_origin,
7049 scroll_pixel_position,
7050 em_width,
7051 window,
7052 cx,
7053 )
7054 });
7055
7056 let (inline_completion_popover, inline_completion_popover_origin) = self
7057 .editor
7058 .update(cx, |editor, cx| {
7059 editor.render_edit_prediction_popover(
7060 &text_hitbox.bounds,
7061 content_origin,
7062 &snapshot,
7063 start_row..end_row,
7064 scroll_position.y,
7065 scroll_position.y + height_in_lines,
7066 &line_layouts,
7067 line_height,
7068 scroll_pixel_position,
7069 newest_selection_head,
7070 editor_width,
7071 &style,
7072 window,
7073 cx,
7074 )
7075 })
7076 .unzip();
7077
7078 let mut inline_diagnostics = self.layout_inline_diagnostics(
7079 &line_layouts,
7080 &crease_trailers,
7081 content_origin,
7082 scroll_pixel_position,
7083 inline_completion_popover_origin,
7084 start_row,
7085 end_row,
7086 line_height,
7087 em_width,
7088 &style,
7089 window,
7090 cx,
7091 );
7092
7093 let mut inline_blame = None;
7094 if let Some(newest_selection_head) = newest_selection_head {
7095 let display_row = newest_selection_head.row();
7096 if (start_row..end_row).contains(&display_row) {
7097 let line_ix = display_row.minus(start_row) as usize;
7098 let row_info = &row_infos[line_ix];
7099 let line_layout = &line_layouts[line_ix];
7100 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
7101 inline_blame = self.layout_inline_blame(
7102 display_row,
7103 row_info,
7104 line_layout,
7105 crease_trailer_layout,
7106 em_width,
7107 content_origin,
7108 scroll_pixel_position,
7109 line_height,
7110 window,
7111 cx,
7112 );
7113 if inline_blame.is_some() {
7114 // Blame overrides inline diagnostics
7115 inline_diagnostics.remove(&display_row);
7116 }
7117 }
7118 }
7119
7120 let blamed_display_rows = self.layout_blame_entries(
7121 &row_infos,
7122 em_width,
7123 scroll_position,
7124 line_height,
7125 &gutter_hitbox,
7126 gutter_dimensions.git_blame_entries_width,
7127 window,
7128 cx,
7129 );
7130
7131 self.editor.update(cx, |editor, cx| {
7132 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
7133
7134 let autoscrolled = if autoscroll_horizontally {
7135 editor.autoscroll_horizontally(
7136 start_row,
7137 editor_width - (glyph_grid_cell.width / 2.0)
7138 + style.scrollbar_width,
7139 scroll_width,
7140 em_width,
7141 &line_layouts,
7142 cx,
7143 )
7144 } else {
7145 false
7146 };
7147
7148 if clamped || autoscrolled {
7149 snapshot = editor.snapshot(window, cx);
7150 scroll_position = snapshot.scroll_position();
7151 }
7152 });
7153
7154 let line_elements = self.prepaint_lines(
7155 start_row,
7156 &mut line_layouts,
7157 line_height,
7158 scroll_pixel_position,
7159 content_origin,
7160 window,
7161 cx,
7162 );
7163
7164 let mut block_start_rows = HashSet::default();
7165
7166 window.with_element_namespace("blocks", |window| {
7167 self.layout_blocks(
7168 &mut blocks,
7169 &mut block_start_rows,
7170 &hitbox,
7171 line_height,
7172 scroll_pixel_position,
7173 window,
7174 cx,
7175 );
7176 });
7177
7178 let cursors = self.collect_cursors(&snapshot, cx);
7179 let visible_row_range = start_row..end_row;
7180 let non_visible_cursors = cursors
7181 .iter()
7182 .any(|c| !visible_row_range.contains(&c.0.row()));
7183
7184 let visible_cursors = self.layout_visible_cursors(
7185 &snapshot,
7186 &selections,
7187 &block_start_rows,
7188 start_row..end_row,
7189 &line_layouts,
7190 &text_hitbox,
7191 content_origin,
7192 scroll_position,
7193 scroll_pixel_position,
7194 line_height,
7195 em_width,
7196 em_advance,
7197 autoscroll_containing_element,
7198 window,
7199 cx,
7200 );
7201
7202 let scrollbars_layout = self.layout_scrollbars(
7203 &snapshot,
7204 scrollbar_layout_information,
7205 content_offset,
7206 scroll_position,
7207 non_visible_cursors,
7208 window,
7209 cx,
7210 );
7211
7212 let gutter_settings = EditorSettings::get_global(cx).gutter;
7213
7214 let mut code_actions_indicator = None;
7215 if let Some(newest_selection_head) = newest_selection_head {
7216 let newest_selection_point =
7217 newest_selection_head.to_point(&snapshot.display_snapshot);
7218
7219 if (start_row..end_row).contains(&newest_selection_head.row()) {
7220 self.layout_cursor_popovers(
7221 line_height,
7222 &text_hitbox,
7223 content_origin,
7224 start_row,
7225 scroll_pixel_position,
7226 &line_layouts,
7227 newest_selection_head,
7228 newest_selection_point,
7229 &style,
7230 window,
7231 cx,
7232 );
7233
7234 let show_code_actions = snapshot
7235 .show_code_actions
7236 .unwrap_or(gutter_settings.code_actions);
7237 if show_code_actions {
7238 let newest_selection_point =
7239 newest_selection_head.to_point(&snapshot.display_snapshot);
7240 if !snapshot
7241 .is_line_folded(MultiBufferRow(newest_selection_point.row))
7242 {
7243 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
7244 MultiBufferRow(newest_selection_point.row),
7245 );
7246 if let Some((buffer, range)) = buffer {
7247 let buffer_id = buffer.remote_id();
7248 let row = range.start.row;
7249 let has_test_indicator = self
7250 .editor
7251 .read(cx)
7252 .tasks
7253 .contains_key(&(buffer_id, row));
7254
7255 let has_expand_indicator = row_infos
7256 .get(
7257 (newest_selection_head.row() - start_row).0
7258 as usize,
7259 )
7260 .is_some_and(|row_info| row_info.expand_info.is_some());
7261
7262 if !has_test_indicator && !has_expand_indicator {
7263 code_actions_indicator = self
7264 .layout_code_actions_indicator(
7265 line_height,
7266 newest_selection_head,
7267 scroll_pixel_position,
7268 &gutter_dimensions,
7269 &gutter_hitbox,
7270 &mut breakpoint_rows,
7271 &display_hunks,
7272 window,
7273 cx,
7274 );
7275 }
7276 }
7277 }
7278 }
7279 }
7280 }
7281
7282 self.layout_gutter_menu(
7283 line_height,
7284 &text_hitbox,
7285 content_origin,
7286 scroll_pixel_position,
7287 gutter_dimensions.width - gutter_dimensions.left_padding,
7288 window,
7289 cx,
7290 );
7291
7292 let test_indicators = if gutter_settings.runnables {
7293 self.layout_run_indicators(
7294 line_height,
7295 start_row..end_row,
7296 &row_infos,
7297 scroll_pixel_position,
7298 &gutter_dimensions,
7299 &gutter_hitbox,
7300 &display_hunks,
7301 &snapshot,
7302 &mut breakpoint_rows,
7303 window,
7304 cx,
7305 )
7306 } else {
7307 Vec::new()
7308 };
7309
7310 let show_breakpoints = snapshot
7311 .show_breakpoints
7312 .unwrap_or(gutter_settings.breakpoints);
7313 let breakpoints = if cx.has_flag::<Debugger>() && show_breakpoints {
7314 self.layout_breakpoints(
7315 line_height,
7316 start_row..end_row,
7317 scroll_pixel_position,
7318 &gutter_dimensions,
7319 &gutter_hitbox,
7320 &display_hunks,
7321 &snapshot,
7322 breakpoint_rows,
7323 &row_infos,
7324 window,
7325 cx,
7326 )
7327 } else {
7328 vec![]
7329 };
7330
7331 self.layout_signature_help(
7332 &hitbox,
7333 content_origin,
7334 scroll_pixel_position,
7335 newest_selection_head,
7336 start_row,
7337 &line_layouts,
7338 line_height,
7339 em_width,
7340 window,
7341 cx,
7342 );
7343
7344 if !cx.has_active_drag() {
7345 self.layout_hover_popovers(
7346 &snapshot,
7347 &hitbox,
7348 &text_hitbox,
7349 start_row..end_row,
7350 content_origin,
7351 scroll_pixel_position,
7352 &line_layouts,
7353 line_height,
7354 em_width,
7355 window,
7356 cx,
7357 );
7358 }
7359
7360 let mouse_context_menu = self.layout_mouse_context_menu(
7361 &snapshot,
7362 start_row..end_row,
7363 content_origin,
7364 window,
7365 cx,
7366 );
7367
7368 window.with_element_namespace("crease_toggles", |window| {
7369 self.prepaint_crease_toggles(
7370 &mut crease_toggles,
7371 line_height,
7372 &gutter_dimensions,
7373 gutter_settings,
7374 scroll_pixel_position,
7375 &gutter_hitbox,
7376 window,
7377 cx,
7378 )
7379 });
7380
7381 window.with_element_namespace("expand_toggles", |window| {
7382 self.prepaint_expand_toggles(&mut expand_toggles, window, cx)
7383 });
7384
7385 let invisible_symbol_font_size = font_size / 2.;
7386 let tab_invisible = window
7387 .text_system()
7388 .shape_line(
7389 "→".into(),
7390 invisible_symbol_font_size,
7391 &[TextRun {
7392 len: "→".len(),
7393 font: self.style.text.font(),
7394 color: cx.theme().colors().editor_invisible,
7395 background_color: None,
7396 underline: None,
7397 strikethrough: None,
7398 }],
7399 )
7400 .unwrap();
7401 let space_invisible = window
7402 .text_system()
7403 .shape_line(
7404 "•".into(),
7405 invisible_symbol_font_size,
7406 &[TextRun {
7407 len: "•".len(),
7408 font: self.style.text.font(),
7409 color: cx.theme().colors().editor_invisible,
7410 background_color: None,
7411 underline: None,
7412 strikethrough: None,
7413 }],
7414 )
7415 .unwrap();
7416
7417 let mode = snapshot.mode;
7418
7419 let position_map = Rc::new(PositionMap {
7420 size: bounds.size,
7421 visible_row_range,
7422 scroll_pixel_position,
7423 scroll_max,
7424 line_layouts,
7425 line_height,
7426 em_width,
7427 em_advance,
7428 snapshot,
7429 gutter_hitbox: gutter_hitbox.clone(),
7430 text_hitbox: text_hitbox.clone(),
7431 });
7432
7433 self.editor.update(cx, |editor, _| {
7434 editor.last_position_map = Some(position_map.clone())
7435 });
7436
7437 let diff_hunk_controls = if is_read_only {
7438 vec![]
7439 } else {
7440 self.layout_diff_hunk_controls(
7441 start_row..end_row,
7442 &row_infos,
7443 &text_hitbox,
7444 &position_map,
7445 newest_selection_head,
7446 line_height,
7447 scroll_pixel_position,
7448 &display_hunks,
7449 self.editor.clone(),
7450 window,
7451 cx,
7452 )
7453 };
7454
7455 EditorLayout {
7456 mode,
7457 position_map,
7458 visible_display_row_range: start_row..end_row,
7459 wrap_guides,
7460 indent_guides,
7461 hitbox,
7462 gutter_hitbox,
7463 display_hunks,
7464 content_origin,
7465 scrollbars_layout,
7466 active_rows,
7467 highlighted_rows,
7468 highlighted_ranges,
7469 highlighted_gutter_ranges,
7470 redacted_ranges,
7471 line_elements,
7472 line_numbers,
7473 blamed_display_rows,
7474 inline_diagnostics,
7475 inline_blame,
7476 blocks,
7477 cursors,
7478 visible_cursors,
7479 selections,
7480 inline_completion_popover,
7481 diff_hunk_controls,
7482 mouse_context_menu,
7483 test_indicators,
7484 breakpoints,
7485 code_actions_indicator,
7486 crease_toggles,
7487 crease_trailers,
7488 tab_invisible,
7489 space_invisible,
7490 sticky_buffer_header,
7491 expand_toggles,
7492 }
7493 })
7494 })
7495 })
7496 }
7497
7498 fn paint(
7499 &mut self,
7500 _: Option<&GlobalElementId>,
7501 bounds: Bounds<gpui::Pixels>,
7502 _: &mut Self::RequestLayoutState,
7503 layout: &mut Self::PrepaintState,
7504 window: &mut Window,
7505 cx: &mut App,
7506 ) {
7507 let focus_handle = self.editor.focus_handle(cx);
7508 let key_context = self
7509 .editor
7510 .update(cx, |editor, cx| editor.key_context(window, cx));
7511
7512 window.set_key_context(key_context);
7513 window.handle_input(
7514 &focus_handle,
7515 ElementInputHandler::new(bounds, self.editor.clone()),
7516 cx,
7517 );
7518 self.register_actions(window, cx);
7519 self.register_key_listeners(window, cx, layout);
7520
7521 let text_style = TextStyleRefinement {
7522 font_size: Some(self.style.text.font_size),
7523 line_height: Some(self.style.text.line_height),
7524 ..Default::default()
7525 };
7526 let rem_size = self.rem_size(cx);
7527 window.with_rem_size(rem_size, |window| {
7528 window.with_text_style(Some(text_style), |window| {
7529 window.with_content_mask(Some(ContentMask { bounds }), |window| {
7530 self.paint_mouse_listeners(layout, window, cx);
7531 self.paint_background(layout, window, cx);
7532 self.paint_indent_guides(layout, window, cx);
7533
7534 if layout.gutter_hitbox.size.width > Pixels::ZERO {
7535 self.paint_blamed_display_rows(layout, window, cx);
7536 self.paint_line_numbers(layout, window, cx);
7537 }
7538
7539 self.paint_text(layout, window, cx);
7540
7541 if layout.gutter_hitbox.size.width > Pixels::ZERO {
7542 self.paint_gutter_highlights(layout, window, cx);
7543 self.paint_gutter_indicators(layout, window, cx);
7544 }
7545
7546 if !layout.blocks.is_empty() {
7547 window.with_element_namespace("blocks", |window| {
7548 self.paint_blocks(layout, window, cx);
7549 });
7550 }
7551
7552 window.with_element_namespace("blocks", |window| {
7553 if let Some(mut sticky_header) = layout.sticky_buffer_header.take() {
7554 sticky_header.paint(window, cx)
7555 }
7556 });
7557
7558 self.paint_scrollbars(layout, window, cx);
7559 self.paint_inline_completion_popover(layout, window, cx);
7560 self.paint_mouse_context_menu(layout, window, cx);
7561 });
7562 })
7563 })
7564 }
7565}
7566
7567pub(super) fn gutter_bounds(
7568 editor_bounds: Bounds<Pixels>,
7569 gutter_dimensions: GutterDimensions,
7570) -> Bounds<Pixels> {
7571 Bounds {
7572 origin: editor_bounds.origin,
7573 size: size(gutter_dimensions.width, editor_bounds.size.height),
7574 }
7575}
7576
7577/// Holds information required for layouting the editor scrollbars.
7578struct ScrollbarLayoutInformation {
7579 /// The bounds of the editor area (excluding the content offset).
7580 editor_bounds: Bounds<Pixels>,
7581 /// The available range to scroll within the document.
7582 scroll_range: Size<Pixels>,
7583 /// The space available for one glyph in the editor.
7584 glyph_grid_cell: Size<Pixels>,
7585}
7586
7587impl ScrollbarLayoutInformation {
7588 pub fn new(
7589 editor_bounds: Bounds<Pixels>,
7590 glyph_grid_cell: Size<Pixels>,
7591 document_size: Size<Pixels>,
7592 longest_line_blame_width: Pixels,
7593 scrollbar_width: Pixels,
7594 editor_width: Pixels,
7595 settings: &EditorSettings,
7596 ) -> Self {
7597 let vertical_overscroll = match settings.scroll_beyond_last_line {
7598 ScrollBeyondLastLine::OnePage => editor_bounds.size.height,
7599 ScrollBeyondLastLine::Off => glyph_grid_cell.height,
7600 ScrollBeyondLastLine::VerticalScrollMargin => {
7601 (1.0 + settings.vertical_scroll_margin) * glyph_grid_cell.height
7602 }
7603 };
7604
7605 let right_margin = if document_size.width + longest_line_blame_width >= editor_width {
7606 glyph_grid_cell.width + scrollbar_width
7607 } else {
7608 px(0.0)
7609 };
7610
7611 let overscroll = size(right_margin + longest_line_blame_width, vertical_overscroll);
7612
7613 let scroll_range = document_size + overscroll;
7614
7615 ScrollbarLayoutInformation {
7616 editor_bounds,
7617 scroll_range,
7618 glyph_grid_cell,
7619 }
7620 }
7621}
7622
7623impl IntoElement for EditorElement {
7624 type Element = Self;
7625
7626 fn into_element(self) -> Self::Element {
7627 self
7628 }
7629}
7630
7631pub struct EditorLayout {
7632 position_map: Rc<PositionMap>,
7633 hitbox: Hitbox,
7634 gutter_hitbox: Hitbox,
7635 content_origin: gpui::Point<Pixels>,
7636 scrollbars_layout: Option<EditorScrollbars>,
7637 mode: EditorMode,
7638 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
7639 indent_guides: Option<Vec<IndentGuideLayout>>,
7640 visible_display_row_range: Range<DisplayRow>,
7641 active_rows: BTreeMap<DisplayRow, LineHighlightSpec>,
7642 highlighted_rows: BTreeMap<DisplayRow, LineHighlight>,
7643 line_elements: SmallVec<[AnyElement; 1]>,
7644 line_numbers: Arc<HashMap<MultiBufferRow, LineNumberLayout>>,
7645 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
7646 blamed_display_rows: Option<Vec<AnyElement>>,
7647 inline_diagnostics: HashMap<DisplayRow, AnyElement>,
7648 inline_blame: Option<AnyElement>,
7649 blocks: Vec<BlockLayout>,
7650 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
7651 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
7652 redacted_ranges: Vec<Range<DisplayPoint>>,
7653 cursors: Vec<(DisplayPoint, Hsla)>,
7654 visible_cursors: Vec<CursorLayout>,
7655 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
7656 code_actions_indicator: Option<AnyElement>,
7657 test_indicators: Vec<AnyElement>,
7658 breakpoints: Vec<AnyElement>,
7659 crease_toggles: Vec<Option<AnyElement>>,
7660 expand_toggles: Vec<Option<(AnyElement, gpui::Point<Pixels>)>>,
7661 diff_hunk_controls: Vec<AnyElement>,
7662 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
7663 inline_completion_popover: Option<AnyElement>,
7664 mouse_context_menu: Option<AnyElement>,
7665 tab_invisible: ShapedLine,
7666 space_invisible: ShapedLine,
7667 sticky_buffer_header: Option<AnyElement>,
7668}
7669
7670impl EditorLayout {
7671 fn line_end_overshoot(&self) -> Pixels {
7672 0.15 * self.position_map.line_height
7673 }
7674}
7675
7676struct LineNumberLayout {
7677 shaped_line: ShapedLine,
7678 hitbox: Option<Hitbox>,
7679}
7680
7681struct ColoredRange<T> {
7682 start: T,
7683 end: T,
7684 color: Hsla,
7685}
7686
7687impl Along for ScrollbarAxes {
7688 type Unit = bool;
7689
7690 fn along(&self, axis: ScrollbarAxis) -> Self::Unit {
7691 match axis {
7692 ScrollbarAxis::Horizontal => self.horizontal,
7693 ScrollbarAxis::Vertical => self.vertical,
7694 }
7695 }
7696
7697 fn apply_along(&self, axis: ScrollbarAxis, f: impl FnOnce(Self::Unit) -> Self::Unit) -> Self {
7698 match axis {
7699 ScrollbarAxis::Horizontal => ScrollbarAxes {
7700 horizontal: f(self.horizontal),
7701 vertical: self.vertical,
7702 },
7703 ScrollbarAxis::Vertical => ScrollbarAxes {
7704 horizontal: self.horizontal,
7705 vertical: f(self.vertical),
7706 },
7707 }
7708 }
7709}
7710
7711#[derive(Clone)]
7712struct EditorScrollbars {
7713 pub vertical: Option<ScrollbarLayout>,
7714 pub horizontal: Option<ScrollbarLayout>,
7715 pub visible: bool,
7716}
7717
7718impl EditorScrollbars {
7719 pub fn from_scrollbar_axes(
7720 settings_visibility: ScrollbarAxes,
7721 layout_information: &ScrollbarLayoutInformation,
7722 content_offset: gpui::Point<Pixels>,
7723 scroll_position: gpui::Point<f32>,
7724 scrollbar_width: Pixels,
7725 show_scrollbars: bool,
7726 window: &mut Window,
7727 ) -> Self {
7728 let ScrollbarLayoutInformation {
7729 editor_bounds,
7730 scroll_range,
7731 glyph_grid_cell,
7732 } = layout_information;
7733
7734 let scrollbar_bounds_for = |axis: ScrollbarAxis| match axis {
7735 ScrollbarAxis::Horizontal => Bounds::from_corner_and_size(
7736 Corner::BottomLeft,
7737 editor_bounds.bottom_left(),
7738 size(
7739 if settings_visibility.vertical {
7740 editor_bounds.size.width - scrollbar_width
7741 } else {
7742 editor_bounds.size.width
7743 },
7744 scrollbar_width,
7745 ),
7746 ),
7747 ScrollbarAxis::Vertical => Bounds::from_corner_and_size(
7748 Corner::TopRight,
7749 editor_bounds.top_right(),
7750 size(scrollbar_width, editor_bounds.size.height),
7751 ),
7752 };
7753
7754 let mut create_scrollbar_layout = |axis| {
7755 settings_visibility
7756 .along(axis)
7757 .then(|| {
7758 (
7759 editor_bounds.size.along(axis) - content_offset.along(axis),
7760 scroll_range.along(axis),
7761 )
7762 })
7763 .filter(|(editor_content_size, scroll_range)| {
7764 // The scrollbar should only be rendered if the content does
7765 // not entirely fit into the editor
7766 // However, this only applies to the horizontal scrollbar, as information about the
7767 // vertical scrollbar layout is always needed for scrollbar diagnostics.
7768 axis != ScrollbarAxis::Horizontal || editor_content_size < scroll_range
7769 })
7770 .map(|(editor_content_size, scroll_range)| {
7771 ScrollbarLayout::new(
7772 window.insert_hitbox(scrollbar_bounds_for(axis), false),
7773 editor_content_size,
7774 scroll_range,
7775 glyph_grid_cell.along(axis),
7776 content_offset.along(axis),
7777 scroll_position.along(axis),
7778 axis,
7779 )
7780 })
7781 };
7782
7783 Self {
7784 vertical: create_scrollbar_layout(ScrollbarAxis::Vertical),
7785 horizontal: create_scrollbar_layout(ScrollbarAxis::Horizontal),
7786 visible: show_scrollbars,
7787 }
7788 }
7789
7790 pub fn iter_scrollbars(&self) -> impl Iterator<Item = (&ScrollbarLayout, ScrollbarAxis)> + '_ {
7791 [
7792 (&self.vertical, ScrollbarAxis::Vertical),
7793 (&self.horizontal, ScrollbarAxis::Horizontal),
7794 ]
7795 .into_iter()
7796 .filter_map(|(scrollbar, axis)| scrollbar.as_ref().map(|s| (s, axis)))
7797 }
7798
7799 /// Returns the currently hovered scrollbar axis, if any.
7800 pub fn get_hovered_axis(&self, window: &Window) -> Option<(&ScrollbarLayout, ScrollbarAxis)> {
7801 self.iter_scrollbars()
7802 .find(|s| s.0.hitbox.is_hovered(window))
7803 }
7804}
7805
7806#[derive(Clone)]
7807struct ScrollbarLayout {
7808 hitbox: Hitbox,
7809 visible_range: Range<f32>,
7810 text_unit_size: Pixels,
7811 content_offset: Pixels,
7812 thumb_size: Pixels,
7813 axis: ScrollbarAxis,
7814}
7815
7816impl ScrollbarLayout {
7817 const BORDER_WIDTH: Pixels = px(1.0);
7818 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
7819 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
7820 const MIN_THUMB_SIZE: Pixels = px(25.0);
7821
7822 fn new(
7823 scrollbar_track_hitbox: Hitbox,
7824 editor_content_size: Pixels,
7825 scroll_range: Pixels,
7826 glyph_space: Pixels,
7827 content_offset: Pixels,
7828 scroll_position: f32,
7829 axis: ScrollbarAxis,
7830 ) -> Self {
7831 let track_bounds = scrollbar_track_hitbox.bounds;
7832 // The length of the track available to the scrollbar thumb. We deliberately
7833 // exclude the content size here so that the thumb aligns with the content.
7834 let track_length = track_bounds.size.along(axis) - content_offset;
7835
7836 let text_units_per_page = editor_content_size / glyph_space;
7837 let visible_range = scroll_position..scroll_position + text_units_per_page;
7838 let total_text_units = scroll_range / glyph_space;
7839
7840 let thumb_percentage = text_units_per_page / total_text_units;
7841 let thumb_size = (track_length * thumb_percentage)
7842 .max(ScrollbarLayout::MIN_THUMB_SIZE)
7843 .min(track_length);
7844 let text_unit_size =
7845 (track_length - thumb_size) / (total_text_units - text_units_per_page).max(0.);
7846
7847 ScrollbarLayout {
7848 hitbox: scrollbar_track_hitbox,
7849 visible_range,
7850 text_unit_size,
7851 content_offset,
7852 thumb_size,
7853 axis,
7854 }
7855 }
7856
7857 fn thumb_bounds(&self) -> Bounds<Pixels> {
7858 let scrollbar_track = &self.hitbox.bounds;
7859 Bounds::new(
7860 scrollbar_track
7861 .origin
7862 .apply_along(self.axis, |origin| self.thumb_origin(origin)),
7863 scrollbar_track
7864 .size
7865 .apply_along(self.axis, |_| self.thumb_size),
7866 )
7867 }
7868
7869 fn thumb_origin(&self, origin: Pixels) -> Pixels {
7870 origin + self.content_offset + self.visible_range.start * self.text_unit_size
7871 }
7872
7873 fn marker_quads_for_ranges(
7874 &self,
7875 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
7876 column: Option<usize>,
7877 ) -> Vec<PaintQuad> {
7878 struct MinMax {
7879 min: Pixels,
7880 max: Pixels,
7881 }
7882 let (x_range, height_limit) = if let Some(column) = column {
7883 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
7884 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
7885 let end = start + column_width;
7886 (
7887 Range { start, end },
7888 MinMax {
7889 min: Self::MIN_MARKER_HEIGHT,
7890 max: px(f32::MAX),
7891 },
7892 )
7893 } else {
7894 (
7895 Range {
7896 start: Self::BORDER_WIDTH,
7897 end: self.hitbox.size.width,
7898 },
7899 MinMax {
7900 min: Self::LINE_MARKER_HEIGHT,
7901 max: Self::LINE_MARKER_HEIGHT,
7902 },
7903 )
7904 };
7905
7906 let row_to_y = |row: DisplayRow| row.as_f32() * self.text_unit_size;
7907 let mut pixel_ranges = row_ranges
7908 .into_iter()
7909 .map(|range| {
7910 let start_y = row_to_y(range.start);
7911 let end_y = row_to_y(range.end)
7912 + self
7913 .text_unit_size
7914 .max(height_limit.min)
7915 .min(height_limit.max);
7916 ColoredRange {
7917 start: start_y,
7918 end: end_y,
7919 color: range.color,
7920 }
7921 })
7922 .peekable();
7923
7924 let mut quads = Vec::new();
7925 while let Some(mut pixel_range) = pixel_ranges.next() {
7926 while let Some(next_pixel_range) = pixel_ranges.peek() {
7927 if pixel_range.end >= next_pixel_range.start - px(1.0)
7928 && pixel_range.color == next_pixel_range.color
7929 {
7930 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
7931 pixel_ranges.next();
7932 } else {
7933 break;
7934 }
7935 }
7936
7937 let bounds = Bounds::from_corners(
7938 point(x_range.start, pixel_range.start),
7939 point(x_range.end, pixel_range.end),
7940 );
7941 quads.push(quad(
7942 bounds,
7943 Corners::default(),
7944 pixel_range.color,
7945 Edges::default(),
7946 Hsla::transparent_black(),
7947 BorderStyle::default(),
7948 ));
7949 }
7950
7951 quads
7952 }
7953}
7954
7955struct CreaseTrailerLayout {
7956 element: AnyElement,
7957 bounds: Bounds<Pixels>,
7958}
7959
7960pub(crate) struct PositionMap {
7961 pub size: Size<Pixels>,
7962 pub line_height: Pixels,
7963 pub scroll_pixel_position: gpui::Point<Pixels>,
7964 pub scroll_max: gpui::Point<f32>,
7965 pub em_width: Pixels,
7966 pub em_advance: Pixels,
7967 pub visible_row_range: Range<DisplayRow>,
7968 pub line_layouts: Vec<LineWithInvisibles>,
7969 pub snapshot: EditorSnapshot,
7970 pub text_hitbox: Hitbox,
7971 pub gutter_hitbox: Hitbox,
7972}
7973
7974#[derive(Debug, Copy, Clone)]
7975pub struct PointForPosition {
7976 pub previous_valid: DisplayPoint,
7977 pub next_valid: DisplayPoint,
7978 pub exact_unclipped: DisplayPoint,
7979 pub column_overshoot_after_line_end: u32,
7980}
7981
7982impl PointForPosition {
7983 pub fn as_valid(&self) -> Option<DisplayPoint> {
7984 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
7985 Some(self.previous_valid)
7986 } else {
7987 None
7988 }
7989 }
7990}
7991
7992impl PositionMap {
7993 pub(crate) fn point_for_position(&self, position: gpui::Point<Pixels>) -> PointForPosition {
7994 let text_bounds = self.text_hitbox.bounds;
7995 let scroll_position = self.snapshot.scroll_position();
7996 let position = position - text_bounds.origin;
7997 let y = position.y.max(px(0.)).min(self.size.height);
7998 let x = position.x + (scroll_position.x * self.em_width);
7999 let row = ((y / self.line_height) + scroll_position.y) as u32;
8000
8001 let (column, x_overshoot_after_line_end) = if let Some(line) = self
8002 .line_layouts
8003 .get(row as usize - scroll_position.y as usize)
8004 {
8005 if let Some(ix) = line.index_for_x(x) {
8006 (ix as u32, px(0.))
8007 } else {
8008 (line.len as u32, px(0.).max(x - line.width))
8009 }
8010 } else {
8011 (0, x)
8012 };
8013
8014 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
8015 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
8016 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
8017
8018 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
8019 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
8020 PointForPosition {
8021 previous_valid,
8022 next_valid,
8023 exact_unclipped,
8024 column_overshoot_after_line_end,
8025 }
8026 }
8027}
8028
8029struct BlockLayout {
8030 id: BlockId,
8031 row: Option<DisplayRow>,
8032 element: AnyElement,
8033 available_space: Size<AvailableSpace>,
8034 style: BlockStyle,
8035 is_buffer_header: bool,
8036}
8037
8038pub fn layout_line(
8039 row: DisplayRow,
8040 snapshot: &EditorSnapshot,
8041 style: &EditorStyle,
8042 text_width: Pixels,
8043 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
8044 window: &mut Window,
8045 cx: &mut App,
8046) -> LineWithInvisibles {
8047 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
8048 LineWithInvisibles::from_chunks(
8049 chunks,
8050 &style,
8051 MAX_LINE_LEN,
8052 1,
8053 snapshot.mode,
8054 text_width,
8055 is_row_soft_wrapped,
8056 window,
8057 cx,
8058 )
8059 .pop()
8060 .unwrap()
8061}
8062
8063#[derive(Debug)]
8064pub struct IndentGuideLayout {
8065 origin: gpui::Point<Pixels>,
8066 length: Pixels,
8067 single_indent_width: Pixels,
8068 depth: u32,
8069 active: bool,
8070 settings: IndentGuideSettings,
8071}
8072
8073pub struct CursorLayout {
8074 origin: gpui::Point<Pixels>,
8075 block_width: Pixels,
8076 line_height: Pixels,
8077 color: Hsla,
8078 shape: CursorShape,
8079 block_text: Option<ShapedLine>,
8080 cursor_name: Option<AnyElement>,
8081}
8082
8083#[derive(Debug)]
8084pub struct CursorName {
8085 string: SharedString,
8086 color: Hsla,
8087 is_top_row: bool,
8088}
8089
8090impl CursorLayout {
8091 pub fn new(
8092 origin: gpui::Point<Pixels>,
8093 block_width: Pixels,
8094 line_height: Pixels,
8095 color: Hsla,
8096 shape: CursorShape,
8097 block_text: Option<ShapedLine>,
8098 ) -> CursorLayout {
8099 CursorLayout {
8100 origin,
8101 block_width,
8102 line_height,
8103 color,
8104 shape,
8105 block_text,
8106 cursor_name: None,
8107 }
8108 }
8109
8110 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
8111 Bounds {
8112 origin: self.origin + origin,
8113 size: size(self.block_width, self.line_height),
8114 }
8115 }
8116
8117 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
8118 match self.shape {
8119 CursorShape::Bar => Bounds {
8120 origin: self.origin + origin,
8121 size: size(px(2.0), self.line_height),
8122 },
8123 CursorShape::Block | CursorShape::Hollow => Bounds {
8124 origin: self.origin + origin,
8125 size: size(self.block_width, self.line_height),
8126 },
8127 CursorShape::Underline => Bounds {
8128 origin: self.origin
8129 + origin
8130 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
8131 size: size(self.block_width, px(2.0)),
8132 },
8133 }
8134 }
8135
8136 pub fn layout(
8137 &mut self,
8138 origin: gpui::Point<Pixels>,
8139 cursor_name: Option<CursorName>,
8140 window: &mut Window,
8141 cx: &mut App,
8142 ) {
8143 if let Some(cursor_name) = cursor_name {
8144 let bounds = self.bounds(origin);
8145 let text_size = self.line_height / 1.5;
8146
8147 let name_origin = if cursor_name.is_top_row {
8148 point(bounds.right() - px(1.), bounds.top())
8149 } else {
8150 match self.shape {
8151 CursorShape::Bar => point(
8152 bounds.right() - px(2.),
8153 bounds.top() - text_size / 2. - px(1.),
8154 ),
8155 _ => point(
8156 bounds.right() - px(1.),
8157 bounds.top() - text_size / 2. - px(1.),
8158 ),
8159 }
8160 };
8161 let mut name_element = div()
8162 .bg(self.color)
8163 .text_size(text_size)
8164 .px_0p5()
8165 .line_height(text_size + px(2.))
8166 .text_color(cursor_name.color)
8167 .child(cursor_name.string.clone())
8168 .into_any_element();
8169
8170 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), window, cx);
8171
8172 self.cursor_name = Some(name_element);
8173 }
8174 }
8175
8176 pub fn paint(&mut self, origin: gpui::Point<Pixels>, window: &mut Window, cx: &mut App) {
8177 let bounds = self.bounds(origin);
8178
8179 //Draw background or border quad
8180 let cursor = if matches!(self.shape, CursorShape::Hollow) {
8181 outline(bounds, self.color, BorderStyle::Solid)
8182 } else {
8183 fill(bounds, self.color)
8184 };
8185
8186 if let Some(name) = &mut self.cursor_name {
8187 name.paint(window, cx);
8188 }
8189
8190 window.paint_quad(cursor);
8191
8192 if let Some(block_text) = &self.block_text {
8193 block_text
8194 .paint(self.origin + origin, self.line_height, window, cx)
8195 .log_err();
8196 }
8197 }
8198
8199 pub fn shape(&self) -> CursorShape {
8200 self.shape
8201 }
8202}
8203
8204#[derive(Debug)]
8205pub struct HighlightedRange {
8206 pub start_y: Pixels,
8207 pub line_height: Pixels,
8208 pub lines: Vec<HighlightedRangeLine>,
8209 pub color: Hsla,
8210 pub corner_radius: Pixels,
8211}
8212
8213#[derive(Debug)]
8214pub struct HighlightedRangeLine {
8215 pub start_x: Pixels,
8216 pub end_x: Pixels,
8217}
8218
8219impl HighlightedRange {
8220 pub fn paint(&self, bounds: Bounds<Pixels>, window: &mut Window) {
8221 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
8222 self.paint_lines(self.start_y, &self.lines[0..1], bounds, window);
8223 self.paint_lines(
8224 self.start_y + self.line_height,
8225 &self.lines[1..],
8226 bounds,
8227 window,
8228 );
8229 } else {
8230 self.paint_lines(self.start_y, &self.lines, bounds, window);
8231 }
8232 }
8233
8234 fn paint_lines(
8235 &self,
8236 start_y: Pixels,
8237 lines: &[HighlightedRangeLine],
8238 _bounds: Bounds<Pixels>,
8239 window: &mut Window,
8240 ) {
8241 if lines.is_empty() {
8242 return;
8243 }
8244
8245 let first_line = lines.first().unwrap();
8246 let last_line = lines.last().unwrap();
8247
8248 let first_top_left = point(first_line.start_x, start_y);
8249 let first_top_right = point(first_line.end_x, start_y);
8250
8251 let curve_height = point(Pixels::ZERO, self.corner_radius);
8252 let curve_width = |start_x: Pixels, end_x: Pixels| {
8253 let max = (end_x - start_x) / 2.;
8254 let width = if max < self.corner_radius {
8255 max
8256 } else {
8257 self.corner_radius
8258 };
8259
8260 point(width, Pixels::ZERO)
8261 };
8262
8263 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
8264 let mut builder = gpui::PathBuilder::fill();
8265 builder.move_to(first_top_right - top_curve_width);
8266 builder.curve_to(first_top_right + curve_height, first_top_right);
8267
8268 let mut iter = lines.iter().enumerate().peekable();
8269 while let Some((ix, line)) = iter.next() {
8270 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
8271
8272 if let Some((_, next_line)) = iter.peek() {
8273 let next_top_right = point(next_line.end_x, bottom_right.y);
8274
8275 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
8276 Ordering::Equal => {
8277 builder.line_to(bottom_right);
8278 }
8279 Ordering::Less => {
8280 let curve_width = curve_width(next_top_right.x, bottom_right.x);
8281 builder.line_to(bottom_right - curve_height);
8282 if self.corner_radius > Pixels::ZERO {
8283 builder.curve_to(bottom_right - curve_width, bottom_right);
8284 }
8285 builder.line_to(next_top_right + curve_width);
8286 if self.corner_radius > Pixels::ZERO {
8287 builder.curve_to(next_top_right + curve_height, next_top_right);
8288 }
8289 }
8290 Ordering::Greater => {
8291 let curve_width = curve_width(bottom_right.x, next_top_right.x);
8292 builder.line_to(bottom_right - curve_height);
8293 if self.corner_radius > Pixels::ZERO {
8294 builder.curve_to(bottom_right + curve_width, bottom_right);
8295 }
8296 builder.line_to(next_top_right - curve_width);
8297 if self.corner_radius > Pixels::ZERO {
8298 builder.curve_to(next_top_right + curve_height, next_top_right);
8299 }
8300 }
8301 }
8302 } else {
8303 let curve_width = curve_width(line.start_x, line.end_x);
8304 builder.line_to(bottom_right - curve_height);
8305 if self.corner_radius > Pixels::ZERO {
8306 builder.curve_to(bottom_right - curve_width, bottom_right);
8307 }
8308
8309 let bottom_left = point(line.start_x, bottom_right.y);
8310 builder.line_to(bottom_left + curve_width);
8311 if self.corner_radius > Pixels::ZERO {
8312 builder.curve_to(bottom_left - curve_height, bottom_left);
8313 }
8314 }
8315 }
8316
8317 if first_line.start_x > last_line.start_x {
8318 let curve_width = curve_width(last_line.start_x, first_line.start_x);
8319 let second_top_left = point(last_line.start_x, start_y + self.line_height);
8320 builder.line_to(second_top_left + curve_height);
8321 if self.corner_radius > Pixels::ZERO {
8322 builder.curve_to(second_top_left + curve_width, second_top_left);
8323 }
8324 let first_bottom_left = point(first_line.start_x, second_top_left.y);
8325 builder.line_to(first_bottom_left - curve_width);
8326 if self.corner_radius > Pixels::ZERO {
8327 builder.curve_to(first_bottom_left - curve_height, first_bottom_left);
8328 }
8329 }
8330
8331 builder.line_to(first_top_left + curve_height);
8332 if self.corner_radius > Pixels::ZERO {
8333 builder.curve_to(first_top_left + top_curve_width, first_top_left);
8334 }
8335 builder.line_to(first_top_right - top_curve_width);
8336
8337 if let Ok(path) = builder.build() {
8338 window.paint_path(path, self.color);
8339 }
8340 }
8341}
8342
8343enum CursorPopoverType {
8344 CodeContextMenu,
8345 EditPrediction,
8346}
8347
8348pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
8349 (delta.pow(1.5) / 100.0).into()
8350}
8351
8352fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
8353 (delta.pow(1.2) / 300.0).into()
8354}
8355
8356pub fn register_action<T: Action>(
8357 editor: &Entity<Editor>,
8358 window: &mut Window,
8359 listener: impl Fn(&mut Editor, &T, &mut Window, &mut Context<Editor>) + 'static,
8360) {
8361 let editor = editor.clone();
8362 window.on_action(TypeId::of::<T>(), move |action, phase, window, cx| {
8363 let action = action.downcast_ref().unwrap();
8364 if phase == DispatchPhase::Bubble {
8365 editor.update(cx, |editor, cx| {
8366 listener(editor, action, window, cx);
8367 })
8368 }
8369 })
8370}
8371
8372fn compute_auto_height_layout(
8373 editor: &mut Editor,
8374 max_lines: usize,
8375 max_line_number_width: Pixels,
8376 known_dimensions: Size<Option<Pixels>>,
8377 available_width: AvailableSpace,
8378 window: &mut Window,
8379 cx: &mut Context<Editor>,
8380) -> Option<Size<Pixels>> {
8381 let width = known_dimensions.width.or({
8382 if let AvailableSpace::Definite(available_width) = available_width {
8383 Some(available_width)
8384 } else {
8385 None
8386 }
8387 })?;
8388 if let Some(height) = known_dimensions.height {
8389 return Some(size(width, height));
8390 }
8391
8392 let style = editor.style.as_ref().unwrap();
8393 let font_id = window.text_system().resolve_font(&style.text.font());
8394 let font_size = style.text.font_size.to_pixels(window.rem_size());
8395 let line_height = style.text.line_height_in_pixels(window.rem_size());
8396 let em_width = window.text_system().em_width(font_id, font_size).unwrap();
8397
8398 let mut snapshot = editor.snapshot(window, cx);
8399 let gutter_dimensions = snapshot
8400 .gutter_dimensions(font_id, font_size, max_line_number_width, cx)
8401 .unwrap_or_default();
8402
8403 editor.gutter_dimensions = gutter_dimensions;
8404 let text_width = width - gutter_dimensions.width;
8405 let overscroll = size(em_width, px(0.));
8406
8407 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
8408 if editor.set_wrap_width(Some(editor_width), cx) {
8409 snapshot = editor.snapshot(window, cx);
8410 }
8411
8412 let scroll_height = (snapshot.max_point().row().next_row().0 as f32) * line_height;
8413 let height = scroll_height
8414 .max(line_height)
8415 .min(line_height * max_lines as f32);
8416
8417 Some(size(width, height))
8418}
8419
8420#[cfg(test)]
8421mod tests {
8422 use super::*;
8423 use crate::{
8424 Editor, MultiBuffer,
8425 display_map::{BlockPlacement, BlockProperties},
8426 editor_tests::{init_test, update_test_language_settings},
8427 };
8428 use gpui::{TestAppContext, VisualTestContext};
8429 use language::language_settings;
8430 use log::info;
8431 use std::num::NonZeroU32;
8432 use util::test::sample_text;
8433
8434 #[gpui::test]
8435 fn test_shape_line_numbers(cx: &mut TestAppContext) {
8436 init_test(cx, |_| {});
8437 let window = cx.add_window(|window, cx| {
8438 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
8439 Editor::new(EditorMode::Full, buffer, None, window, cx)
8440 });
8441
8442 let editor = window.root(cx).unwrap();
8443 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
8444 let line_height = window
8445 .update(cx, |_, window, _| {
8446 style.text.line_height_in_pixels(window.rem_size())
8447 })
8448 .unwrap();
8449 let element = EditorElement::new(&editor, style);
8450 let snapshot = window
8451 .update(cx, |editor, window, cx| editor.snapshot(window, cx))
8452 .unwrap();
8453
8454 let layouts = cx
8455 .update_window(*window, |_, window, cx| {
8456 element.layout_line_numbers(
8457 None,
8458 GutterDimensions {
8459 left_padding: Pixels::ZERO,
8460 right_padding: Pixels::ZERO,
8461 width: px(30.0),
8462 margin: Pixels::ZERO,
8463 git_blame_entries_width: None,
8464 },
8465 line_height,
8466 gpui::Point::default(),
8467 DisplayRow(0)..DisplayRow(6),
8468 &(0..6)
8469 .map(|row| RowInfo {
8470 buffer_row: Some(row),
8471 ..Default::default()
8472 })
8473 .collect::<Vec<_>>(),
8474 &BTreeMap::default(),
8475 Some(DisplayPoint::new(DisplayRow(0), 0)),
8476 &snapshot,
8477 window,
8478 cx,
8479 )
8480 })
8481 .unwrap();
8482 assert_eq!(layouts.len(), 6);
8483
8484 let relative_rows = window
8485 .update(cx, |editor, window, cx| {
8486 let snapshot = editor.snapshot(window, cx);
8487 element.calculate_relative_line_numbers(
8488 &snapshot,
8489 &(DisplayRow(0)..DisplayRow(6)),
8490 Some(DisplayRow(3)),
8491 )
8492 })
8493 .unwrap();
8494 assert_eq!(relative_rows[&DisplayRow(0)], 3);
8495 assert_eq!(relative_rows[&DisplayRow(1)], 2);
8496 assert_eq!(relative_rows[&DisplayRow(2)], 1);
8497 // current line has no relative number
8498 assert_eq!(relative_rows[&DisplayRow(4)], 1);
8499 assert_eq!(relative_rows[&DisplayRow(5)], 2);
8500
8501 // works if cursor is before screen
8502 let relative_rows = window
8503 .update(cx, |editor, window, cx| {
8504 let snapshot = editor.snapshot(window, cx);
8505 element.calculate_relative_line_numbers(
8506 &snapshot,
8507 &(DisplayRow(3)..DisplayRow(6)),
8508 Some(DisplayRow(1)),
8509 )
8510 })
8511 .unwrap();
8512 assert_eq!(relative_rows.len(), 3);
8513 assert_eq!(relative_rows[&DisplayRow(3)], 2);
8514 assert_eq!(relative_rows[&DisplayRow(4)], 3);
8515 assert_eq!(relative_rows[&DisplayRow(5)], 4);
8516
8517 // works if cursor is after screen
8518 let relative_rows = window
8519 .update(cx, |editor, window, cx| {
8520 let snapshot = editor.snapshot(window, cx);
8521 element.calculate_relative_line_numbers(
8522 &snapshot,
8523 &(DisplayRow(0)..DisplayRow(3)),
8524 Some(DisplayRow(6)),
8525 )
8526 })
8527 .unwrap();
8528 assert_eq!(relative_rows.len(), 3);
8529 assert_eq!(relative_rows[&DisplayRow(0)], 5);
8530 assert_eq!(relative_rows[&DisplayRow(1)], 4);
8531 assert_eq!(relative_rows[&DisplayRow(2)], 3);
8532 }
8533
8534 #[gpui::test]
8535 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
8536 init_test(cx, |_| {});
8537
8538 let window = cx.add_window(|window, cx| {
8539 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
8540 Editor::new(EditorMode::Full, buffer, None, window, cx)
8541 });
8542 let cx = &mut VisualTestContext::from_window(*window, cx);
8543 let editor = window.root(cx).unwrap();
8544 let style = cx.update(|_, cx| editor.read(cx).style().unwrap().clone());
8545
8546 window
8547 .update(cx, |editor, window, cx| {
8548 editor.cursor_shape = CursorShape::Block;
8549 editor.change_selections(None, window, cx, |s| {
8550 s.select_ranges([
8551 Point::new(0, 0)..Point::new(1, 0),
8552 Point::new(3, 2)..Point::new(3, 3),
8553 Point::new(5, 6)..Point::new(6, 0),
8554 ]);
8555 });
8556 })
8557 .unwrap();
8558
8559 let (_, state) = cx.draw(
8560 point(px(500.), px(500.)),
8561 size(px(500.), px(500.)),
8562 |_, _| EditorElement::new(&editor, style),
8563 );
8564
8565 assert_eq!(state.selections.len(), 1);
8566 let local_selections = &state.selections[0].1;
8567 assert_eq!(local_selections.len(), 3);
8568 // moves cursor back one line
8569 assert_eq!(
8570 local_selections[0].head,
8571 DisplayPoint::new(DisplayRow(0), 6)
8572 );
8573 assert_eq!(
8574 local_selections[0].range,
8575 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
8576 );
8577
8578 // moves cursor back one column
8579 assert_eq!(
8580 local_selections[1].range,
8581 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
8582 );
8583 assert_eq!(
8584 local_selections[1].head,
8585 DisplayPoint::new(DisplayRow(3), 2)
8586 );
8587
8588 // leaves cursor on the max point
8589 assert_eq!(
8590 local_selections[2].range,
8591 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
8592 );
8593 assert_eq!(
8594 local_selections[2].head,
8595 DisplayPoint::new(DisplayRow(6), 0)
8596 );
8597
8598 // active lines does not include 1 (even though the range of the selection does)
8599 assert_eq!(
8600 state.active_rows.keys().cloned().collect::<Vec<_>>(),
8601 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
8602 );
8603 }
8604
8605 #[gpui::test]
8606 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
8607 init_test(cx, |_| {});
8608
8609 let window = cx.add_window(|window, cx| {
8610 let buffer = MultiBuffer::build_simple("", cx);
8611 Editor::new(EditorMode::Full, buffer, None, window, cx)
8612 });
8613 let cx = &mut VisualTestContext::from_window(*window, cx);
8614 let editor = window.root(cx).unwrap();
8615 let style = cx.update(|_, cx| editor.read(cx).style().unwrap().clone());
8616 window
8617 .update(cx, |editor, window, cx| {
8618 editor.set_placeholder_text("hello", cx);
8619 editor.insert_blocks(
8620 [BlockProperties {
8621 style: BlockStyle::Fixed,
8622 placement: BlockPlacement::Above(Anchor::min()),
8623 height: 3,
8624 render: Arc::new(|cx| div().h(3. * cx.window.line_height()).into_any()),
8625 priority: 0,
8626 }],
8627 None,
8628 cx,
8629 );
8630
8631 // Blur the editor so that it displays placeholder text.
8632 window.blur();
8633 })
8634 .unwrap();
8635
8636 let (_, state) = cx.draw(
8637 point(px(500.), px(500.)),
8638 size(px(500.), px(500.)),
8639 |_, _| EditorElement::new(&editor, style),
8640 );
8641 assert_eq!(state.position_map.line_layouts.len(), 4);
8642 assert_eq!(state.line_numbers.len(), 1);
8643 assert_eq!(
8644 state
8645 .line_numbers
8646 .get(&MultiBufferRow(0))
8647 .map(|line_number| line_number.shaped_line.text.as_ref()),
8648 Some("1")
8649 );
8650 }
8651
8652 #[gpui::test]
8653 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
8654 const TAB_SIZE: u32 = 4;
8655
8656 let input_text = "\t \t|\t| a b";
8657 let expected_invisibles = vec![
8658 Invisible::Tab {
8659 line_start_offset: 0,
8660 line_end_offset: TAB_SIZE as usize,
8661 },
8662 Invisible::Whitespace {
8663 line_offset: TAB_SIZE as usize,
8664 },
8665 Invisible::Tab {
8666 line_start_offset: TAB_SIZE as usize + 1,
8667 line_end_offset: TAB_SIZE as usize * 2,
8668 },
8669 Invisible::Tab {
8670 line_start_offset: TAB_SIZE as usize * 2 + 1,
8671 line_end_offset: TAB_SIZE as usize * 3,
8672 },
8673 Invisible::Whitespace {
8674 line_offset: TAB_SIZE as usize * 3 + 1,
8675 },
8676 Invisible::Whitespace {
8677 line_offset: TAB_SIZE as usize * 3 + 3,
8678 },
8679 ];
8680 assert_eq!(
8681 expected_invisibles.len(),
8682 input_text
8683 .chars()
8684 .filter(|initial_char| initial_char.is_whitespace())
8685 .count(),
8686 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
8687 );
8688
8689 for show_line_numbers in [true, false] {
8690 init_test(cx, |s| {
8691 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
8692 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
8693 });
8694
8695 let actual_invisibles = collect_invisibles_from_new_editor(
8696 cx,
8697 EditorMode::Full,
8698 input_text,
8699 px(500.0),
8700 show_line_numbers,
8701 );
8702
8703 assert_eq!(expected_invisibles, actual_invisibles);
8704 }
8705 }
8706
8707 #[gpui::test]
8708 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
8709 init_test(cx, |s| {
8710 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
8711 s.defaults.tab_size = NonZeroU32::new(4);
8712 });
8713
8714 for editor_mode_without_invisibles in [
8715 EditorMode::SingleLine { auto_width: false },
8716 EditorMode::AutoHeight { max_lines: 100 },
8717 ] {
8718 for show_line_numbers in [true, false] {
8719 let invisibles = collect_invisibles_from_new_editor(
8720 cx,
8721 editor_mode_without_invisibles,
8722 "\t\t\t| | a b",
8723 px(500.0),
8724 show_line_numbers,
8725 );
8726 assert!(
8727 invisibles.is_empty(),
8728 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}"
8729 );
8730 }
8731 }
8732 }
8733
8734 #[gpui::test]
8735 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
8736 let tab_size = 4;
8737 let input_text = "a\tbcd ".repeat(9);
8738 let repeated_invisibles = [
8739 Invisible::Tab {
8740 line_start_offset: 1,
8741 line_end_offset: tab_size as usize,
8742 },
8743 Invisible::Whitespace {
8744 line_offset: tab_size as usize + 3,
8745 },
8746 Invisible::Whitespace {
8747 line_offset: tab_size as usize + 4,
8748 },
8749 Invisible::Whitespace {
8750 line_offset: tab_size as usize + 5,
8751 },
8752 Invisible::Whitespace {
8753 line_offset: tab_size as usize + 6,
8754 },
8755 Invisible::Whitespace {
8756 line_offset: tab_size as usize + 7,
8757 },
8758 ];
8759 let expected_invisibles = std::iter::once(repeated_invisibles)
8760 .cycle()
8761 .take(9)
8762 .flatten()
8763 .collect::<Vec<_>>();
8764 assert_eq!(
8765 expected_invisibles.len(),
8766 input_text
8767 .chars()
8768 .filter(|initial_char| initial_char.is_whitespace())
8769 .count(),
8770 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
8771 );
8772 info!("Expected invisibles: {expected_invisibles:?}");
8773
8774 init_test(cx, |_| {});
8775
8776 // Put the same string with repeating whitespace pattern into editors of various size,
8777 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
8778 let resize_step = 10.0;
8779 let mut editor_width = 200.0;
8780 while editor_width <= 1000.0 {
8781 for show_line_numbers in [true, false] {
8782 update_test_language_settings(cx, |s| {
8783 s.defaults.tab_size = NonZeroU32::new(tab_size);
8784 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
8785 s.defaults.preferred_line_length = Some(editor_width as u32);
8786 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
8787 });
8788
8789 let actual_invisibles = collect_invisibles_from_new_editor(
8790 cx,
8791 EditorMode::Full,
8792 &input_text,
8793 px(editor_width),
8794 show_line_numbers,
8795 );
8796
8797 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
8798 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
8799 let mut i = 0;
8800 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
8801 i = actual_index;
8802 match expected_invisibles.get(i) {
8803 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
8804 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
8805 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
8806 _ => {
8807 panic!(
8808 "At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}"
8809 )
8810 }
8811 },
8812 None => {
8813 panic!("Unexpected extra invisible {actual_invisible:?} at index {i}")
8814 }
8815 }
8816 }
8817 let missing_expected_invisibles = &expected_invisibles[i + 1..];
8818 assert!(
8819 missing_expected_invisibles.is_empty(),
8820 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
8821 );
8822
8823 editor_width += resize_step;
8824 }
8825 }
8826 }
8827
8828 fn collect_invisibles_from_new_editor(
8829 cx: &mut TestAppContext,
8830 editor_mode: EditorMode,
8831 input_text: &str,
8832 editor_width: Pixels,
8833 show_line_numbers: bool,
8834 ) -> Vec<Invisible> {
8835 info!(
8836 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
8837 editor_width.0
8838 );
8839 let window = cx.add_window(|window, cx| {
8840 let buffer = MultiBuffer::build_simple(input_text, cx);
8841 Editor::new(editor_mode, buffer, None, window, cx)
8842 });
8843 let cx = &mut VisualTestContext::from_window(*window, cx);
8844 let editor = window.root(cx).unwrap();
8845
8846 let style = cx.update(|_, cx| editor.read(cx).style().unwrap().clone());
8847 window
8848 .update(cx, |editor, _, cx| {
8849 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
8850 editor.set_wrap_width(Some(editor_width), cx);
8851 editor.set_show_line_numbers(show_line_numbers, cx);
8852 })
8853 .unwrap();
8854 let (_, state) = cx.draw(
8855 point(px(500.), px(500.)),
8856 size(px(500.), px(500.)),
8857 |_, _| EditorElement::new(&editor, style),
8858 );
8859 state
8860 .position_map
8861 .line_layouts
8862 .iter()
8863 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
8864 .cloned()
8865 .collect()
8866 }
8867}