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