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