1use crate::{
2 blame_entry_tooltip::{blame_entry_relative_timestamp, BlameEntryTooltip},
3 code_context_menus::CodeActionsMenu,
4 display_map::{
5 Block, BlockContext, BlockStyle, DisplaySnapshot, HighlightedChunk, ToDisplayPoint,
6 },
7 editor_settings::{
8 CurrentLineHighlight, DoubleClickInMultibuffer, MultiCursorModifier, ScrollBeyondLastLine,
9 ShowScrollbar,
10 },
11 git::blame::{CommitDetails, GitBlame},
12 hover_popover::{
13 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
14 },
15 hunk_diff::{diff_hunk_to_display, DisplayDiffHunk},
16 hunk_status,
17 items::BufferSearchHighlights,
18 mouse_context_menu::{self, MenuPosition, MouseContextMenu},
19 scroll::{axis_pair, scroll_amount::ScrollAmount, AxisPair},
20 BlockId, ChunkReplacement, CursorShape, CustomBlockId, DisplayPoint, DisplayRow,
21 DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode, EditorSettings,
22 EditorSnapshot, EditorStyle, ExpandExcerpts, FocusedBlock, GutterDimensions, HalfPageDown,
23 HalfPageUp, HandleInput, HoveredCursor, HoveredHunk, InlineCompletion, JumpData, LineDown,
24 LineUp, OpenExcerpts, PageDown, PageUp, Point, RowExt, RowRangeExt, SelectPhase, Selection,
25 SoftWrap, ToPoint, ToggleFold, CURSORS_VISIBLE_FOR, FILE_HEADER_HEIGHT,
26 GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED, MAX_LINE_LEN, MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
27};
28use client::ParticipantIndex;
29use collections::{BTreeMap, HashMap, HashSet};
30use file_icons::FileIcons;
31use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
32use gpui::{
33 anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
34 transparent_black, Action, AnyElement, AvailableSpace, Axis, Bounds, ClickEvent, ClipboardItem,
35 ContentMask, Corner, Corners, CursorStyle, DispatchPhase, Edges, Element, ElementInputHandler,
36 Entity, FontId, GlobalElementId, Hitbox, Hsla, InteractiveElement, IntoElement, Length,
37 ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad,
38 ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size,
39 StatefulInteractiveElement, Style, Styled, Subscription, TextRun, TextStyleRefinement, View,
40 ViewContext, WeakView, WindowContext,
41};
42use itertools::Itertools;
43use language::{
44 language_settings::{
45 IndentGuideBackgroundColoring, IndentGuideColoring, IndentGuideSettings,
46 ShowWhitespaceSetting,
47 },
48 ChunkRendererContext,
49};
50use lsp::DiagnosticSeverity;
51use multi_buffer::{
52 Anchor, AnchorRangeExt, ExcerptId, ExcerptInfo, ExpandExcerptDirection, MultiBufferPoint,
53 MultiBufferRow, MultiBufferSnapshot, ToOffset,
54};
55use project::{
56 project_settings::{GitGutterSetting, ProjectSettings},
57 ProjectPath,
58};
59use settings::Settings;
60use smallvec::{smallvec, SmallVec};
61use std::{
62 any::TypeId,
63 borrow::Cow,
64 cmp::{self, Ordering},
65 fmt::{self, Write},
66 iter, mem,
67 ops::{Deref, Range},
68 rc::Rc,
69 sync::Arc,
70};
71use sum_tree::Bias;
72use theme::{ActiveTheme, Appearance, PlayerColor};
73use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
74use ui::{prelude::*, POPOVER_Y_PADDING};
75use unicode_segmentation::UnicodeSegmentation;
76use util::RangeExt;
77use util::ResultExt;
78use workspace::{item::Item, Workspace};
79
80struct SelectionLayout {
81 head: DisplayPoint,
82 cursor_shape: CursorShape,
83 is_newest: bool,
84 is_local: bool,
85 range: Range<DisplayPoint>,
86 active_rows: Range<DisplayRow>,
87 user_name: Option<SharedString>,
88}
89
90impl SelectionLayout {
91 fn new<T: ToPoint + ToDisplayPoint + Clone>(
92 selection: Selection<T>,
93 line_mode: bool,
94 cursor_shape: CursorShape,
95 map: &DisplaySnapshot,
96 is_newest: bool,
97 is_local: bool,
98 user_name: Option<SharedString>,
99 ) -> Self {
100 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
101 let display_selection = point_selection.map(|p| p.to_display_point(map));
102 let mut range = display_selection.range();
103 let mut head = display_selection.head();
104 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
105 ..map.next_line_boundary(point_selection.end).1.row();
106
107 // vim visual line mode
108 if line_mode {
109 let point_range = map.expand_to_line(point_selection.range());
110 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
111 }
112
113 // any vim visual mode (including line mode)
114 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
115 && !range.is_empty()
116 && !selection.reversed
117 {
118 if head.column() > 0 {
119 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
120 } else if head.row().0 > 0 && head != map.max_point() {
121 head = map.clip_point(
122 DisplayPoint::new(
123 head.row().previous_row(),
124 map.line_len(head.row().previous_row()),
125 ),
126 Bias::Left,
127 );
128 // updating range.end is a no-op unless you're cursor is
129 // on the newline containing a multi-buffer divider
130 // in which case the clip_point may have moved the head up
131 // an additional row.
132 range.end = DisplayPoint::new(head.row().next_row(), 0);
133 active_rows.end = head.row();
134 }
135 }
136
137 Self {
138 head,
139 cursor_shape,
140 is_newest,
141 is_local,
142 range,
143 active_rows,
144 user_name,
145 }
146 }
147}
148
149pub struct EditorElement {
150 editor: View<Editor>,
151 style: EditorStyle,
152}
153
154type DisplayRowDelta = u32;
155
156impl EditorElement {
157 pub(crate) const SCROLLBAR_WIDTH: Pixels = px(15.);
158
159 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
160 Self {
161 editor: editor.clone(),
162 style,
163 }
164 }
165
166 fn register_actions(&self, cx: &mut WindowContext) {
167 let view = &self.editor;
168 view.update(cx, |editor, cx| {
169 for action in editor.editor_actions.borrow().values() {
170 (action)(cx)
171 }
172 });
173
174 crate::rust_analyzer_ext::apply_related_actions(view, cx);
175 crate::clangd_ext::apply_related_actions(view, cx);
176 register_action(view, cx, Editor::open_context_menu);
177 register_action(view, cx, Editor::move_left);
178 register_action(view, cx, Editor::move_right);
179 register_action(view, cx, Editor::move_down);
180 register_action(view, cx, Editor::move_down_by_lines);
181 register_action(view, cx, Editor::select_down_by_lines);
182 register_action(view, cx, Editor::move_up);
183 register_action(view, cx, Editor::move_up_by_lines);
184 register_action(view, cx, Editor::select_up_by_lines);
185 register_action(view, cx, Editor::select_page_down);
186 register_action(view, cx, Editor::select_page_up);
187 register_action(view, cx, Editor::cancel);
188 register_action(view, cx, Editor::newline);
189 register_action(view, cx, Editor::newline_above);
190 register_action(view, cx, Editor::newline_below);
191 register_action(view, cx, Editor::backspace);
192 register_action(view, cx, Editor::delete);
193 register_action(view, cx, Editor::tab);
194 register_action(view, cx, Editor::tab_prev);
195 register_action(view, cx, Editor::indent);
196 register_action(view, cx, Editor::outdent);
197 register_action(view, cx, Editor::autoindent);
198 register_action(view, cx, Editor::delete_line);
199 register_action(view, cx, Editor::join_lines);
200 register_action(view, cx, Editor::sort_lines_case_sensitive);
201 register_action(view, cx, Editor::sort_lines_case_insensitive);
202 register_action(view, cx, Editor::reverse_lines);
203 register_action(view, cx, Editor::shuffle_lines);
204 register_action(view, cx, Editor::convert_to_upper_case);
205 register_action(view, cx, Editor::convert_to_lower_case);
206 register_action(view, cx, Editor::convert_to_title_case);
207 register_action(view, cx, Editor::convert_to_snake_case);
208 register_action(view, cx, Editor::convert_to_kebab_case);
209 register_action(view, cx, Editor::convert_to_upper_camel_case);
210 register_action(view, cx, Editor::convert_to_lower_camel_case);
211 register_action(view, cx, Editor::convert_to_opposite_case);
212 register_action(view, cx, Editor::delete_to_previous_word_start);
213 register_action(view, cx, Editor::delete_to_previous_subword_start);
214 register_action(view, cx, Editor::delete_to_next_word_end);
215 register_action(view, cx, Editor::delete_to_next_subword_end);
216 register_action(view, cx, Editor::delete_to_beginning_of_line);
217 register_action(view, cx, Editor::delete_to_end_of_line);
218 register_action(view, cx, Editor::cut_to_end_of_line);
219 register_action(view, cx, Editor::duplicate_line_up);
220 register_action(view, cx, Editor::duplicate_line_down);
221 register_action(view, cx, Editor::duplicate_selection);
222 register_action(view, cx, Editor::move_line_up);
223 register_action(view, cx, Editor::move_line_down);
224 register_action(view, cx, Editor::transpose);
225 register_action(view, cx, Editor::rewrap);
226 register_action(view, cx, Editor::cut);
227 register_action(view, cx, Editor::kill_ring_cut);
228 register_action(view, cx, Editor::kill_ring_yank);
229 register_action(view, cx, Editor::copy);
230 register_action(view, cx, Editor::paste);
231 register_action(view, cx, Editor::undo);
232 register_action(view, cx, Editor::redo);
233 register_action(view, cx, Editor::move_page_up);
234 register_action(view, cx, Editor::move_page_down);
235 register_action(view, cx, Editor::next_screen);
236 register_action(view, cx, Editor::scroll_cursor_top);
237 register_action(view, cx, Editor::scroll_cursor_center);
238 register_action(view, cx, Editor::scroll_cursor_bottom);
239 register_action(view, cx, Editor::scroll_cursor_center_top_bottom);
240 register_action(view, cx, |editor, _: &LineDown, cx| {
241 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
242 });
243 register_action(view, cx, |editor, _: &LineUp, cx| {
244 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
245 });
246 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
247 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
248 });
249 register_action(view, cx, |editor, HandleInput(text): &HandleInput, cx| {
250 if text.is_empty() {
251 return;
252 }
253 editor.handle_input(text, cx);
254 });
255 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
256 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
257 });
258 register_action(view, cx, |editor, _: &PageDown, cx| {
259 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
260 });
261 register_action(view, cx, |editor, _: &PageUp, cx| {
262 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
263 });
264 register_action(view, cx, Editor::move_to_previous_word_start);
265 register_action(view, cx, Editor::move_to_previous_subword_start);
266 register_action(view, cx, Editor::move_to_next_word_end);
267 register_action(view, cx, Editor::move_to_next_subword_end);
268 register_action(view, cx, Editor::move_to_beginning_of_line);
269 register_action(view, cx, Editor::move_to_end_of_line);
270 register_action(view, cx, Editor::move_to_start_of_paragraph);
271 register_action(view, cx, Editor::move_to_end_of_paragraph);
272 register_action(view, cx, Editor::move_to_beginning);
273 register_action(view, cx, Editor::move_to_end);
274 register_action(view, cx, Editor::select_up);
275 register_action(view, cx, Editor::select_down);
276 register_action(view, cx, Editor::select_left);
277 register_action(view, cx, Editor::select_right);
278 register_action(view, cx, Editor::select_to_previous_word_start);
279 register_action(view, cx, Editor::select_to_previous_subword_start);
280 register_action(view, cx, Editor::select_to_next_word_end);
281 register_action(view, cx, Editor::select_to_next_subword_end);
282 register_action(view, cx, Editor::select_to_beginning_of_line);
283 register_action(view, cx, Editor::select_to_end_of_line);
284 register_action(view, cx, Editor::select_to_start_of_paragraph);
285 register_action(view, cx, Editor::select_to_end_of_paragraph);
286 register_action(view, cx, Editor::select_to_beginning);
287 register_action(view, cx, Editor::select_to_end);
288 register_action(view, cx, Editor::select_all);
289 register_action(view, cx, |editor, action, cx| {
290 editor.select_all_matches(action, cx).log_err();
291 });
292 register_action(view, cx, Editor::select_line);
293 register_action(view, cx, Editor::split_selection_into_lines);
294 register_action(view, cx, Editor::add_selection_above);
295 register_action(view, cx, Editor::add_selection_below);
296 register_action(view, cx, |editor, action, cx| {
297 editor.select_next(action, cx).log_err();
298 });
299 register_action(view, cx, |editor, action, cx| {
300 editor.select_previous(action, cx).log_err();
301 });
302 register_action(view, cx, Editor::toggle_comments);
303 register_action(view, cx, Editor::select_larger_syntax_node);
304 register_action(view, cx, Editor::select_smaller_syntax_node);
305 register_action(view, cx, Editor::select_enclosing_symbol);
306 register_action(view, cx, Editor::move_to_enclosing_bracket);
307 register_action(view, cx, Editor::undo_selection);
308 register_action(view, cx, Editor::redo_selection);
309 if !view.read(cx).is_singleton(cx) {
310 register_action(view, cx, Editor::expand_excerpts);
311 register_action(view, cx, Editor::expand_excerpts_up);
312 register_action(view, cx, Editor::expand_excerpts_down);
313 }
314 register_action(view, cx, Editor::go_to_diagnostic);
315 register_action(view, cx, Editor::go_to_prev_diagnostic);
316 register_action(view, cx, Editor::go_to_next_hunk);
317 register_action(view, cx, Editor::go_to_prev_hunk);
318 register_action(view, cx, |editor, a, cx| {
319 editor.go_to_definition(a, cx).detach_and_log_err(cx);
320 });
321 register_action(view, cx, |editor, a, cx| {
322 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
323 });
324 register_action(view, cx, |editor, a, cx| {
325 editor.go_to_declaration(a, cx).detach_and_log_err(cx);
326 });
327 register_action(view, cx, |editor, a, cx| {
328 editor.go_to_declaration_split(a, cx).detach_and_log_err(cx);
329 });
330 register_action(view, cx, |editor, a, cx| {
331 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
332 });
333 register_action(view, cx, |editor, a, cx| {
334 editor
335 .go_to_implementation_split(a, cx)
336 .detach_and_log_err(cx);
337 });
338 register_action(view, cx, |editor, a, cx| {
339 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
340 });
341 register_action(view, cx, |editor, a, cx| {
342 editor
343 .go_to_type_definition_split(a, cx)
344 .detach_and_log_err(cx);
345 });
346 register_action(view, cx, Editor::open_url);
347 register_action(view, cx, Editor::open_file);
348 register_action(view, cx, Editor::fold);
349 register_action(view, cx, Editor::fold_at_level);
350 register_action(view, cx, Editor::fold_all);
351 register_action(view, cx, Editor::fold_function_bodies);
352 register_action(view, cx, Editor::fold_at);
353 register_action(view, cx, Editor::fold_recursive);
354 register_action(view, cx, Editor::toggle_fold);
355 register_action(view, cx, Editor::toggle_fold_recursive);
356 register_action(view, cx, Editor::unfold_lines);
357 register_action(view, cx, Editor::unfold_recursive);
358 register_action(view, cx, Editor::unfold_all);
359 register_action(view, cx, Editor::unfold_at);
360 register_action(view, cx, Editor::fold_selected_ranges);
361 register_action(view, cx, Editor::show_completions);
362 register_action(view, cx, Editor::toggle_code_actions);
363 register_action(view, cx, Editor::open_excerpts);
364 register_action(view, cx, Editor::open_excerpts_in_split);
365 register_action(view, cx, Editor::open_proposed_changes_editor);
366 register_action(view, cx, Editor::toggle_soft_wrap);
367 register_action(view, cx, Editor::toggle_tab_bar);
368 register_action(view, cx, Editor::toggle_line_numbers);
369 register_action(view, cx, Editor::toggle_relative_line_numbers);
370 register_action(view, cx, Editor::toggle_indent_guides);
371 register_action(view, cx, Editor::toggle_inlay_hints);
372 register_action(view, cx, Editor::toggle_inline_completions);
373 register_action(view, cx, hover_popover::hover);
374 register_action(view, cx, Editor::reveal_in_finder);
375 register_action(view, cx, Editor::copy_path);
376 register_action(view, cx, Editor::copy_relative_path);
377 register_action(view, cx, Editor::copy_highlight_json);
378 register_action(view, cx, Editor::copy_permalink_to_line);
379 register_action(view, cx, Editor::open_permalink_to_line);
380 register_action(view, cx, Editor::copy_file_location);
381 register_action(view, cx, Editor::toggle_git_blame);
382 register_action(view, cx, Editor::toggle_git_blame_inline);
383 register_action(view, cx, Editor::toggle_hunk_diff);
384 register_action(view, cx, Editor::expand_all_hunk_diffs);
385 register_action(view, cx, |editor, action, cx| {
386 if let Some(task) = editor.format(action, cx) {
387 task.detach_and_log_err(cx);
388 } else {
389 cx.propagate();
390 }
391 });
392 register_action(view, cx, |editor, action, cx| {
393 if let Some(task) = editor.format_selections(action, cx) {
394 task.detach_and_log_err(cx);
395 } else {
396 cx.propagate();
397 }
398 });
399 register_action(view, cx, Editor::restart_language_server);
400 register_action(view, cx, Editor::cancel_language_server_work);
401 register_action(view, cx, Editor::show_character_palette);
402 register_action(view, cx, |editor, action, cx| {
403 if let Some(task) = editor.confirm_completion(action, cx) {
404 task.detach_and_log_err(cx);
405 } else {
406 cx.propagate();
407 }
408 });
409 register_action(view, cx, |editor, action, cx| {
410 if let Some(task) = editor.compose_completion(action, cx) {
411 task.detach_and_log_err(cx);
412 } else {
413 cx.propagate();
414 }
415 });
416 register_action(view, cx, |editor, action, cx| {
417 if let Some(task) = editor.confirm_code_action(action, cx) {
418 task.detach_and_log_err(cx);
419 } else {
420 cx.propagate();
421 }
422 });
423 register_action(view, cx, |editor, action, cx| {
424 if let Some(task) = editor.rename(action, cx) {
425 task.detach_and_log_err(cx);
426 } else {
427 cx.propagate();
428 }
429 });
430 register_action(view, cx, |editor, action, cx| {
431 if let Some(task) = editor.confirm_rename(action, cx) {
432 task.detach_and_log_err(cx);
433 } else {
434 cx.propagate();
435 }
436 });
437 register_action(view, cx, |editor, action, cx| {
438 if let Some(task) = editor.find_all_references(action, cx) {
439 task.detach_and_log_err(cx);
440 } else {
441 cx.propagate();
442 }
443 });
444 register_action(view, cx, Editor::show_signature_help);
445 register_action(view, cx, Editor::next_inline_completion);
446 register_action(view, cx, Editor::previous_inline_completion);
447 register_action(view, cx, Editor::show_inline_completion);
448 register_action(view, cx, Editor::context_menu_first);
449 register_action(view, cx, Editor::context_menu_prev);
450 register_action(view, cx, Editor::context_menu_next);
451 register_action(view, cx, Editor::context_menu_last);
452 register_action(view, cx, Editor::display_cursor_names);
453 register_action(view, cx, Editor::unique_lines_case_insensitive);
454 register_action(view, cx, Editor::unique_lines_case_sensitive);
455 register_action(view, cx, Editor::accept_partial_inline_completion);
456 register_action(view, cx, Editor::accept_inline_completion);
457 register_action(view, cx, Editor::revert_file);
458 register_action(view, cx, Editor::revert_selected_hunks);
459 register_action(view, cx, Editor::apply_all_diff_hunks);
460 register_action(view, cx, Editor::apply_selected_diff_hunks);
461 register_action(view, cx, Editor::open_active_item_in_terminal);
462 register_action(view, cx, Editor::reload_file);
463 register_action(view, cx, Editor::spawn_nearest_task);
464 register_action(view, cx, Editor::insert_uuid_v4);
465 register_action(view, cx, Editor::insert_uuid_v7);
466 }
467
468 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
469 let position_map = layout.position_map.clone();
470 cx.on_key_event({
471 let editor = self.editor.clone();
472 let text_hitbox = layout.text_hitbox.clone();
473 move |event: &ModifiersChangedEvent, phase, cx| {
474 if phase != DispatchPhase::Bubble {
475 return;
476 }
477 editor.update(cx, |editor, cx| {
478 if editor.hover_state.focused(cx) {
479 return;
480 }
481 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
482 })
483 }
484 });
485 }
486
487 fn modifiers_changed(
488 editor: &mut Editor,
489 event: &ModifiersChangedEvent,
490 position_map: &PositionMap,
491 text_hitbox: &Hitbox,
492 cx: &mut ViewContext<Editor>,
493 ) {
494 let mouse_position = cx.mouse_position();
495 if !text_hitbox.is_hovered(cx) {
496 return;
497 }
498
499 editor.update_hovered_link(
500 position_map.point_for_position(text_hitbox.bounds, mouse_position),
501 &position_map.snapshot,
502 event.modifiers,
503 cx,
504 )
505 }
506
507 fn mouse_left_down(
508 editor: &mut Editor,
509 event: &MouseDownEvent,
510 hovered_hunk: Option<HoveredHunk>,
511 position_map: &PositionMap,
512 text_hitbox: &Hitbox,
513 gutter_hitbox: &Hitbox,
514 cx: &mut ViewContext<Editor>,
515 ) {
516 if cx.default_prevented() {
517 return;
518 }
519
520 let mut click_count = event.click_count;
521 let mut modifiers = event.modifiers;
522
523 if let Some(hovered_hunk) = hovered_hunk {
524 editor.toggle_hovered_hunk(&hovered_hunk, cx);
525 cx.notify();
526 return;
527 } else if gutter_hitbox.is_hovered(cx) {
528 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
529 } else if !text_hitbox.is_hovered(cx) {
530 return;
531 }
532
533 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
534 match EditorSettings::get_global(cx).double_click_in_multibuffer {
535 DoubleClickInMultibuffer::Select => {
536 // do nothing special on double click, all selection logic is below
537 }
538 DoubleClickInMultibuffer::Open => {
539 if modifiers.alt {
540 // if double click is made with alt, pretend it's a regular double click without opening and alt,
541 // and run the selection logic.
542 modifiers.alt = false;
543 } else {
544 // if double click is made without alt, open the corresponding excerp
545 editor.open_excerpts(&OpenExcerpts, cx);
546 return;
547 }
548 }
549 }
550 }
551
552 let point_for_position =
553 position_map.point_for_position(text_hitbox.bounds, event.position);
554 let position = point_for_position.previous_valid;
555 if modifiers.shift && modifiers.alt {
556 editor.select(
557 SelectPhase::BeginColumnar {
558 position,
559 reset: false,
560 goal_column: point_for_position.exact_unclipped.column(),
561 },
562 cx,
563 );
564 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
565 {
566 editor.select(
567 SelectPhase::Extend {
568 position,
569 click_count,
570 },
571 cx,
572 );
573 } else {
574 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
575 let multi_cursor_modifier = match multi_cursor_setting {
576 MultiCursorModifier::Alt => modifiers.alt,
577 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
578 };
579 editor.select(
580 SelectPhase::Begin {
581 position,
582 add: multi_cursor_modifier,
583 click_count,
584 },
585 cx,
586 );
587 }
588
589 cx.stop_propagation();
590 }
591
592 fn mouse_right_down(
593 editor: &mut Editor,
594 event: &MouseDownEvent,
595 position_map: &PositionMap,
596 text_hitbox: &Hitbox,
597 cx: &mut ViewContext<Editor>,
598 ) {
599 if !text_hitbox.is_hovered(cx) {
600 return;
601 }
602 let point_for_position =
603 position_map.point_for_position(text_hitbox.bounds, event.position);
604 mouse_context_menu::deploy_context_menu(
605 editor,
606 Some(event.position),
607 point_for_position.previous_valid,
608 cx,
609 );
610 cx.stop_propagation();
611 }
612
613 fn mouse_middle_down(
614 editor: &mut Editor,
615 event: &MouseDownEvent,
616 position_map: &PositionMap,
617 text_hitbox: &Hitbox,
618 cx: &mut ViewContext<Editor>,
619 ) {
620 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
621 return;
622 }
623
624 let point_for_position =
625 position_map.point_for_position(text_hitbox.bounds, event.position);
626 let position = point_for_position.previous_valid;
627
628 editor.select(
629 SelectPhase::BeginColumnar {
630 position,
631 reset: true,
632 goal_column: point_for_position.exact_unclipped.column(),
633 },
634 cx,
635 );
636 }
637
638 fn mouse_up(
639 editor: &mut Editor,
640 event: &MouseUpEvent,
641 position_map: &PositionMap,
642 text_hitbox: &Hitbox,
643 cx: &mut ViewContext<Editor>,
644 ) {
645 let end_selection = editor.has_pending_selection();
646 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
647
648 if end_selection {
649 editor.select(SelectPhase::End, cx);
650 }
651
652 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
653 let multi_cursor_modifier = match multi_cursor_setting {
654 MultiCursorModifier::Alt => event.modifiers.secondary(),
655 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
656 };
657
658 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
659 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
660 editor.handle_click_hovered_link(point, event.modifiers, cx);
661
662 cx.stop_propagation();
663 } else if end_selection && pending_nonempty_selections {
664 cx.stop_propagation();
665 } else if cfg!(any(target_os = "linux", target_os = "freebsd"))
666 && event.button == MouseButton::Middle
667 {
668 if !text_hitbox.is_hovered(cx) || editor.read_only(cx) {
669 return;
670 }
671
672 #[cfg(any(target_os = "linux", target_os = "freebsd"))]
673 if EditorSettings::get_global(cx).middle_click_paste {
674 if let Some(text) = cx.read_from_primary().and_then(|item| item.text()) {
675 let point_for_position =
676 position_map.point_for_position(text_hitbox.bounds, event.position);
677 let position = point_for_position.previous_valid;
678
679 editor.select(
680 SelectPhase::Begin {
681 position,
682 add: false,
683 click_count: 1,
684 },
685 cx,
686 );
687 editor.insert(&text, cx);
688 }
689 cx.stop_propagation()
690 }
691 }
692 }
693
694 fn mouse_dragged(
695 editor: &mut Editor,
696 event: &MouseMoveEvent,
697 position_map: &PositionMap,
698 text_bounds: Bounds<Pixels>,
699 cx: &mut ViewContext<Editor>,
700 ) {
701 if !editor.has_pending_selection() {
702 return;
703 }
704
705 let point_for_position = position_map.point_for_position(text_bounds, event.position);
706 let mut scroll_delta = gpui::Point::<f32>::default();
707 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
708 let top = text_bounds.origin.y + vertical_margin;
709 let bottom = text_bounds.bottom_left().y - vertical_margin;
710 if event.position.y < top {
711 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
712 }
713 if event.position.y > bottom {
714 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
715 }
716
717 // We need horizontal width of text
718 let style = editor.style.clone().unwrap_or_default();
719 let font_id = cx.text_system().resolve_font(&style.text.font());
720 let font_size = style.text.font_size.to_pixels(cx.rem_size());
721 let em_width = cx
722 .text_system()
723 .typographic_bounds(font_id, font_size, 'm')
724 .unwrap()
725 .size
726 .width;
727
728 let scroll_margin_x = EditorSettings::get_global(cx).horizontal_scroll_margin;
729
730 let scroll_space: Pixels = scroll_margin_x * em_width;
731
732 let left = text_bounds.origin.x + scroll_space;
733 let right = text_bounds.top_right().x - scroll_space;
734
735 if event.position.x < left {
736 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
737 }
738 if event.position.x > right {
739 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
740 }
741
742 editor.select(
743 SelectPhase::Update {
744 position: point_for_position.previous_valid,
745 goal_column: point_for_position.exact_unclipped.column(),
746 scroll_delta,
747 },
748 cx,
749 );
750 }
751
752 fn mouse_moved(
753 editor: &mut Editor,
754 event: &MouseMoveEvent,
755 position_map: &PositionMap,
756 text_hitbox: &Hitbox,
757 gutter_hitbox: &Hitbox,
758 cx: &mut ViewContext<Editor>,
759 ) {
760 let modifiers = event.modifiers;
761 let gutter_hovered = gutter_hitbox.is_hovered(cx);
762 editor.set_gutter_hovered(gutter_hovered, cx);
763
764 // Don't trigger hover popover if mouse is hovering over context menu
765 if text_hitbox.is_hovered(cx) {
766 let point_for_position =
767 position_map.point_for_position(text_hitbox.bounds, event.position);
768
769 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
770
771 if let Some(point) = point_for_position.as_valid() {
772 let anchor = position_map
773 .snapshot
774 .buffer_snapshot
775 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
776 hover_at(editor, Some(anchor), cx);
777 Self::update_visible_cursor(editor, point, position_map, cx);
778 } else {
779 hover_at(editor, None, cx);
780 }
781 } else {
782 editor.hide_hovered_link(cx);
783 hover_at(editor, None, cx);
784 if gutter_hovered {
785 cx.stop_propagation();
786 }
787 }
788 }
789
790 fn update_visible_cursor(
791 editor: &mut Editor,
792 point: DisplayPoint,
793 position_map: &PositionMap,
794 cx: &mut ViewContext<Editor>,
795 ) {
796 let snapshot = &position_map.snapshot;
797 let Some(hub) = editor.collaboration_hub() else {
798 return;
799 };
800 let start = snapshot.display_snapshot.clip_point(
801 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
802 Bias::Left,
803 );
804 let end = snapshot.display_snapshot.clip_point(
805 DisplayPoint::new(
806 point.row(),
807 (point.column() + 1).min(snapshot.line_len(point.row())),
808 ),
809 Bias::Right,
810 );
811
812 let range = snapshot
813 .buffer_snapshot
814 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
815 ..snapshot
816 .buffer_snapshot
817 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
818
819 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
820 return;
821 };
822 let key = crate::HoveredCursor {
823 replica_id: selection.replica_id,
824 selection_id: selection.selection.id,
825 };
826 editor.hovered_cursors.insert(
827 key.clone(),
828 cx.spawn(|editor, mut cx| async move {
829 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
830 editor
831 .update(&mut cx, |editor, cx| {
832 editor.hovered_cursors.remove(&key);
833 cx.notify();
834 })
835 .ok();
836 }),
837 );
838 cx.notify()
839 }
840
841 #[allow(clippy::too_many_arguments)]
842 fn layout_selections(
843 &self,
844 start_anchor: Anchor,
845 end_anchor: Anchor,
846 local_selections: &[Selection<Point>],
847 snapshot: &EditorSnapshot,
848 start_row: DisplayRow,
849 end_row: DisplayRow,
850 cx: &mut WindowContext,
851 ) -> (
852 Vec<(PlayerColor, Vec<SelectionLayout>)>,
853 BTreeMap<DisplayRow, bool>,
854 Option<DisplayPoint>,
855 ) {
856 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
857 let mut active_rows = BTreeMap::new();
858 let mut newest_selection_head = None;
859 self.editor.update(cx, |editor, cx| {
860 if editor.show_local_selections {
861 let mut layouts = Vec::new();
862 let newest = editor.selections.newest(cx);
863 for selection in local_selections.iter().cloned() {
864 let is_empty = selection.start == selection.end;
865 let is_newest = selection == newest;
866
867 let layout = SelectionLayout::new(
868 selection,
869 editor.selections.line_mode,
870 editor.cursor_shape,
871 &snapshot.display_snapshot,
872 is_newest,
873 editor.leader_peer_id.is_none(),
874 None,
875 );
876 if is_newest {
877 newest_selection_head = Some(layout.head);
878 }
879
880 for row in cmp::max(layout.active_rows.start.0, start_row.0)
881 ..=cmp::min(layout.active_rows.end.0, end_row.0)
882 {
883 let contains_non_empty_selection =
884 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
885 *contains_non_empty_selection |= !is_empty;
886 }
887 layouts.push(layout);
888 }
889
890 let player = if editor.read_only(cx) {
891 cx.theme().players().read_only()
892 } else {
893 self.style.local_player
894 };
895
896 selections.push((player, layouts));
897 }
898
899 if let Some(collaboration_hub) = &editor.collaboration_hub {
900 // When following someone, render the local selections in their color.
901 if let Some(leader_id) = editor.leader_peer_id {
902 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id)
903 {
904 if let Some(participant_index) = collaboration_hub
905 .user_participant_indices(cx)
906 .get(&collaborator.user_id)
907 {
908 if let Some((local_selection_style, _)) = selections.first_mut() {
909 *local_selection_style = cx
910 .theme()
911 .players()
912 .color_for_participant(participant_index.0);
913 }
914 }
915 }
916 }
917
918 let mut remote_selections = HashMap::default();
919 for selection in snapshot.remote_selections_in_range(
920 &(start_anchor..end_anchor),
921 collaboration_hub.as_ref(),
922 cx,
923 ) {
924 let selection_style =
925 Self::get_participant_color(selection.participant_index, cx);
926
927 // Don't re-render the leader's selections, since the local selections
928 // match theirs.
929 if Some(selection.peer_id) == editor.leader_peer_id {
930 continue;
931 }
932 let key = HoveredCursor {
933 replica_id: selection.replica_id,
934 selection_id: selection.selection.id,
935 };
936
937 let is_shown =
938 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
939
940 remote_selections
941 .entry(selection.replica_id)
942 .or_insert((selection_style, Vec::new()))
943 .1
944 .push(SelectionLayout::new(
945 selection.selection,
946 selection.line_mode,
947 selection.cursor_shape,
948 &snapshot.display_snapshot,
949 false,
950 false,
951 if is_shown { selection.user_name } else { None },
952 ));
953 }
954
955 selections.extend(remote_selections.into_values());
956 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
957 let player = if editor.read_only(cx) {
958 cx.theme().players().read_only()
959 } else {
960 self.style.local_player
961 };
962 let layouts = snapshot
963 .buffer_snapshot
964 .selections_in_range(&(start_anchor..end_anchor), true)
965 .map(move |(_, line_mode, cursor_shape, selection)| {
966 SelectionLayout::new(
967 selection,
968 line_mode,
969 cursor_shape,
970 &snapshot.display_snapshot,
971 false,
972 false,
973 None,
974 )
975 })
976 .collect::<Vec<_>>();
977 selections.push((player, layouts));
978 }
979 });
980 (selections, active_rows, newest_selection_head)
981 }
982
983 fn collect_cursors(
984 &self,
985 snapshot: &EditorSnapshot,
986 cx: &mut WindowContext,
987 ) -> Vec<(DisplayPoint, Hsla)> {
988 let editor = self.editor.read(cx);
989 let mut cursors = Vec::new();
990 let mut skip_local = false;
991 let mut add_cursor = |anchor: Anchor, color| {
992 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
993 };
994 // Remote cursors
995 if let Some(collaboration_hub) = &editor.collaboration_hub {
996 for remote_selection in snapshot.remote_selections_in_range(
997 &(Anchor::min()..Anchor::max()),
998 collaboration_hub.deref(),
999 cx,
1000 ) {
1001 let color = Self::get_participant_color(remote_selection.participant_index, cx);
1002 add_cursor(remote_selection.selection.head(), color.cursor);
1003 if Some(remote_selection.peer_id) == editor.leader_peer_id {
1004 skip_local = true;
1005 }
1006 }
1007 }
1008 // Local cursors
1009 if !skip_local {
1010 let color = cx.theme().players().local().cursor;
1011 editor.selections.disjoint.iter().for_each(|selection| {
1012 add_cursor(selection.head(), color);
1013 });
1014 if let Some(ref selection) = editor.selections.pending_anchor() {
1015 add_cursor(selection.head(), color);
1016 }
1017 }
1018 cursors
1019 }
1020
1021 #[allow(clippy::too_many_arguments)]
1022 fn layout_visible_cursors(
1023 &self,
1024 snapshot: &EditorSnapshot,
1025 selections: &[(PlayerColor, Vec<SelectionLayout>)],
1026 block_start_rows: &HashSet<DisplayRow>,
1027 visible_display_row_range: Range<DisplayRow>,
1028 line_layouts: &[LineWithInvisibles],
1029 text_hitbox: &Hitbox,
1030 content_origin: gpui::Point<Pixels>,
1031 scroll_position: gpui::Point<f32>,
1032 scroll_pixel_position: gpui::Point<Pixels>,
1033 line_height: Pixels,
1034 em_width: Pixels,
1035 autoscroll_containing_element: bool,
1036 cx: &mut WindowContext,
1037 ) -> Vec<CursorLayout> {
1038 let mut autoscroll_bounds = None;
1039 let cursor_layouts = self.editor.update(cx, |editor, cx| {
1040 let mut cursors = Vec::new();
1041 for (player_color, selections) in selections {
1042 for selection in selections {
1043 let cursor_position = selection.head;
1044
1045 let in_range = visible_display_row_range.contains(&cursor_position.row());
1046 if (selection.is_local && !editor.show_local_cursors(cx))
1047 || !in_range
1048 || block_start_rows.contains(&cursor_position.row())
1049 {
1050 continue;
1051 }
1052
1053 let cursor_row_layout = &line_layouts
1054 [cursor_position.row().minus(visible_display_row_range.start) as usize];
1055 let cursor_column = cursor_position.column() as usize;
1056
1057 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1058 let mut block_width =
1059 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1060 if block_width == Pixels::ZERO {
1061 block_width = em_width;
1062 }
1063 let block_text = if let CursorShape::Block = selection.cursor_shape {
1064 snapshot
1065 .grapheme_at(cursor_position)
1066 .or_else(|| {
1067 if cursor_column == 0 {
1068 snapshot.placeholder_text().and_then(|s| {
1069 s.graphemes(true).next().map(|s| s.to_string().into())
1070 })
1071 } else {
1072 None
1073 }
1074 })
1075 .and_then(|text| {
1076 let len = text.len();
1077
1078 let font = cursor_row_layout
1079 .font_id_for_index(cursor_column)
1080 .and_then(|cursor_font_id| {
1081 cx.text_system().get_font_for_id(cursor_font_id)
1082 })
1083 .unwrap_or(self.style.text.font());
1084
1085 // Invert the text color for the block cursor. Ensure that the text
1086 // color is opaque enough to be visible against the background color.
1087 //
1088 // 0.75 is an arbitrary threshold to determine if the background color is
1089 // opaque enough to use as a text color.
1090 //
1091 // TODO: In the future we should ensure themes have a `text_inverse` color.
1092 let color = if cx.theme().colors().editor_background.a < 0.75 {
1093 match cx.theme().appearance {
1094 Appearance::Dark => Hsla::black(),
1095 Appearance::Light => Hsla::white(),
1096 }
1097 } else {
1098 cx.theme().colors().editor_background
1099 };
1100
1101 cx.text_system()
1102 .shape_line(
1103 text,
1104 cursor_row_layout.font_size,
1105 &[TextRun {
1106 len,
1107 font,
1108 color,
1109 background_color: None,
1110 strikethrough: None,
1111 underline: None,
1112 }],
1113 )
1114 .log_err()
1115 })
1116 } else {
1117 None
1118 };
1119
1120 let x = cursor_character_x - scroll_pixel_position.x;
1121 let y = (cursor_position.row().as_f32()
1122 - scroll_pixel_position.y / line_height)
1123 * line_height;
1124 if selection.is_newest {
1125 editor.pixel_position_of_newest_cursor = Some(point(
1126 text_hitbox.origin.x + x + block_width / 2.,
1127 text_hitbox.origin.y + y + line_height / 2.,
1128 ));
1129
1130 if autoscroll_containing_element {
1131 let top = text_hitbox.origin.y
1132 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1133 * line_height;
1134 let left = text_hitbox.origin.x
1135 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1136 .max(0.)
1137 * em_width;
1138
1139 let bottom = text_hitbox.origin.y
1140 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1141 * line_height;
1142 let right = text_hitbox.origin.x
1143 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1144 * em_width;
1145
1146 autoscroll_bounds =
1147 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1148 }
1149 }
1150
1151 let mut cursor = CursorLayout {
1152 color: player_color.cursor,
1153 block_width,
1154 origin: point(x, y),
1155 line_height,
1156 shape: selection.cursor_shape,
1157 block_text,
1158 cursor_name: None,
1159 };
1160 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1161 string: name,
1162 color: self.style.background,
1163 is_top_row: cursor_position.row().0 == 0,
1164 });
1165 cursor.layout(content_origin, cursor_name, cx);
1166 cursors.push(cursor);
1167 }
1168 }
1169 cursors
1170 });
1171
1172 if let Some(bounds) = autoscroll_bounds {
1173 cx.request_autoscroll(bounds);
1174 }
1175
1176 cursor_layouts
1177 }
1178
1179 fn layout_scrollbars(
1180 &self,
1181 snapshot: &EditorSnapshot,
1182 scrollbar_range_data: ScrollbarRangeData,
1183 scroll_position: gpui::Point<f32>,
1184 non_visible_cursors: bool,
1185 cx: &mut WindowContext,
1186 ) -> AxisPair<Option<ScrollbarLayout>> {
1187 let letter_size = scrollbar_range_data.letter_size;
1188 let text_units_per_page = axis_pair(
1189 scrollbar_range_data.scrollbar_bounds.size.width / letter_size.width,
1190 scrollbar_range_data.scrollbar_bounds.size.height / letter_size.height,
1191 );
1192
1193 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1194 let show_scrollbars = match scrollbar_settings.show {
1195 ShowScrollbar::Auto => {
1196 let editor = self.editor.read(cx);
1197 let is_singleton = editor.is_singleton(cx);
1198 // Git
1199 (is_singleton && scrollbar_settings.git_diff && !snapshot.diff_map.is_empty())
1200 ||
1201 // Buffer Search Results
1202 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1203 ||
1204 // Selected Symbol Occurrences
1205 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1206 ||
1207 // Diagnostics
1208 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
1209 ||
1210 // Cursors out of sight
1211 non_visible_cursors
1212 ||
1213 // Scrollmanager
1214 editor.scroll_manager.scrollbars_visible()
1215 }
1216 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1217 ShowScrollbar::Always => true,
1218 ShowScrollbar::Never => false,
1219 };
1220
1221 let axes: AxisPair<bool> = scrollbar_settings.axes.into();
1222
1223 if snapshot.mode != EditorMode::Full {
1224 return axis_pair(None, None);
1225 }
1226
1227 let visible_range = axis_pair(
1228 axes.horizontal
1229 .then(|| scroll_position.x..scroll_position.x + text_units_per_page.horizontal),
1230 axes.vertical
1231 .then(|| scroll_position.y..scroll_position.y + text_units_per_page.vertical),
1232 );
1233
1234 // If a drag took place after we started dragging the scrollbar,
1235 // cancel the scrollbar drag.
1236 if cx.has_active_drag() {
1237 self.editor.update(cx, |editor, cx| {
1238 editor
1239 .scroll_manager
1240 .set_is_dragging_scrollbar(Axis::Horizontal, false, cx);
1241 editor
1242 .scroll_manager
1243 .set_is_dragging_scrollbar(Axis::Vertical, false, cx);
1244 });
1245 }
1246
1247 let text_bounds = scrollbar_range_data.scrollbar_bounds;
1248
1249 let track_bounds = axis_pair(
1250 axes.horizontal.then(|| {
1251 Bounds::from_corners(
1252 point(
1253 text_bounds.bottom_left().x,
1254 text_bounds.bottom_left().y - self.style.scrollbar_width,
1255 ),
1256 point(
1257 text_bounds.bottom_right().x
1258 - if axes.vertical {
1259 self.style.scrollbar_width
1260 } else {
1261 px(0.)
1262 },
1263 text_bounds.bottom_right().y,
1264 ),
1265 )
1266 }),
1267 axes.vertical.then(|| {
1268 Bounds::from_corners(
1269 point(self.scrollbar_left(&text_bounds), text_bounds.origin.y),
1270 text_bounds.bottom_right(),
1271 )
1272 }),
1273 );
1274
1275 let scroll_range_size = scrollbar_range_data.scroll_range.size;
1276 let total_text_units = axis_pair(
1277 Some(scroll_range_size.width / letter_size.width),
1278 Some(scroll_range_size.height / letter_size.height),
1279 );
1280
1281 let thumb_size = axis_pair(
1282 total_text_units
1283 .horizontal
1284 .zip(track_bounds.horizontal)
1285 .map(|(total_text_units_x, track_bounds_x)| {
1286 let thumb_percent =
1287 (text_units_per_page.horizontal / total_text_units_x).min(1.);
1288
1289 track_bounds_x.size.width * thumb_percent
1290 }),
1291 total_text_units.vertical.zip(track_bounds.vertical).map(
1292 |(total_text_units_y, track_bounds_y)| {
1293 let thumb_percent = (text_units_per_page.vertical / total_text_units_y).min(1.);
1294
1295 track_bounds_y.size.height * thumb_percent
1296 },
1297 ),
1298 );
1299
1300 // NOTE: Space not taken by track bounds divided by text units not on screen
1301 let text_unit_size = axis_pair(
1302 thumb_size
1303 .horizontal
1304 .zip(track_bounds.horizontal)
1305 .zip(total_text_units.horizontal)
1306 .map(|((thumb_size, track_bounds), total_text_units)| {
1307 (track_bounds.size.width - thumb_size)
1308 / (total_text_units - text_units_per_page.horizontal).max(0.)
1309 }),
1310 thumb_size
1311 .vertical
1312 .zip(track_bounds.vertical)
1313 .zip(total_text_units.vertical)
1314 .map(|((thumb_size, track_bounds), total_text_units)| {
1315 (track_bounds.size.height - thumb_size)
1316 / (total_text_units - text_units_per_page.vertical).max(0.)
1317 }),
1318 );
1319
1320 let horizontal_scrollbar = track_bounds
1321 .horizontal
1322 .zip(visible_range.horizontal)
1323 .zip(text_unit_size.horizontal)
1324 .zip(thumb_size.horizontal)
1325 .map(
1326 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1327 hitbox: cx.insert_hitbox(track_bounds, false),
1328 visible_range,
1329 text_unit_size,
1330 visible: show_scrollbars,
1331 thumb_size,
1332 axis: Axis::Horizontal,
1333 },
1334 );
1335
1336 let vertical_scrollbar = track_bounds
1337 .vertical
1338 .zip(visible_range.vertical)
1339 .zip(text_unit_size.vertical)
1340 .zip(thumb_size.vertical)
1341 .map(
1342 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1343 hitbox: cx.insert_hitbox(track_bounds, false),
1344 visible_range,
1345 text_unit_size,
1346 visible: show_scrollbars,
1347 thumb_size,
1348 axis: Axis::Vertical,
1349 },
1350 );
1351
1352 axis_pair(horizontal_scrollbar, vertical_scrollbar)
1353 }
1354
1355 #[allow(clippy::too_many_arguments)]
1356 fn prepaint_crease_toggles(
1357 &self,
1358 crease_toggles: &mut [Option<AnyElement>],
1359 line_height: Pixels,
1360 gutter_dimensions: &GutterDimensions,
1361 gutter_settings: crate::editor_settings::Gutter,
1362 scroll_pixel_position: gpui::Point<Pixels>,
1363 gutter_hitbox: &Hitbox,
1364 cx: &mut WindowContext,
1365 ) {
1366 for (ix, crease_toggle) in crease_toggles.iter_mut().enumerate() {
1367 if let Some(crease_toggle) = crease_toggle {
1368 debug_assert!(gutter_settings.folds);
1369 let available_space = size(
1370 AvailableSpace::MinContent,
1371 AvailableSpace::Definite(line_height * 0.55),
1372 );
1373 let crease_toggle_size = crease_toggle.layout_as_root(available_space, cx);
1374
1375 let position = point(
1376 gutter_dimensions.width - gutter_dimensions.right_padding,
1377 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1378 );
1379 let centering_offset = point(
1380 (gutter_dimensions.fold_area_width() - crease_toggle_size.width) / 2.,
1381 (line_height - crease_toggle_size.height) / 2.,
1382 );
1383 let origin = gutter_hitbox.origin + position + centering_offset;
1384 crease_toggle.prepaint_as_root(origin, available_space, cx);
1385 }
1386 }
1387 }
1388
1389 #[allow(clippy::too_many_arguments)]
1390 fn prepaint_crease_trailers(
1391 &self,
1392 trailers: Vec<Option<AnyElement>>,
1393 lines: &[LineWithInvisibles],
1394 line_height: Pixels,
1395 content_origin: gpui::Point<Pixels>,
1396 scroll_pixel_position: gpui::Point<Pixels>,
1397 em_width: Pixels,
1398 cx: &mut WindowContext,
1399 ) -> Vec<Option<CreaseTrailerLayout>> {
1400 trailers
1401 .into_iter()
1402 .enumerate()
1403 .map(|(ix, element)| {
1404 let mut element = element?;
1405 let available_space = size(
1406 AvailableSpace::MinContent,
1407 AvailableSpace::Definite(line_height),
1408 );
1409 let size = element.layout_as_root(available_space, cx);
1410
1411 let line = &lines[ix];
1412 let padding = if line.width == Pixels::ZERO {
1413 Pixels::ZERO
1414 } else {
1415 4. * em_width
1416 };
1417 let position = point(
1418 scroll_pixel_position.x + line.width + padding,
1419 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1420 );
1421 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1422 let origin = content_origin + position + centering_offset;
1423 element.prepaint_as_root(origin, available_space, cx);
1424 Some(CreaseTrailerLayout {
1425 element,
1426 bounds: Bounds::new(origin, size),
1427 })
1428 })
1429 .collect()
1430 }
1431
1432 // Folds contained in a hunk are ignored apart from shrinking visual size
1433 // If a fold contains any hunks then that fold line is marked as modified
1434 fn layout_gutter_git_hunks(
1435 &self,
1436 line_height: Pixels,
1437 gutter_hitbox: &Hitbox,
1438 display_rows: Range<DisplayRow>,
1439 anchor_range: Range<Anchor>,
1440 snapshot: &EditorSnapshot,
1441 cx: &mut WindowContext,
1442 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1443 let buffer_snapshot = &snapshot.buffer_snapshot;
1444 let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(snapshot);
1445 let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(snapshot);
1446
1447 let git_gutter_setting = ProjectSettings::get_global(cx)
1448 .git
1449 .git_gutter
1450 .unwrap_or_default();
1451
1452 self.editor.update(cx, |editor, cx| {
1453 let expanded_hunks = &editor.diff_map.hunks;
1454 let expanded_hunks_start_ix = expanded_hunks
1455 .binary_search_by(|hunk| {
1456 hunk.hunk_range
1457 .end
1458 .cmp(&anchor_range.start, &buffer_snapshot)
1459 .then(Ordering::Less)
1460 })
1461 .unwrap_err();
1462 let mut expanded_hunks = expanded_hunks[expanded_hunks_start_ix..].iter().peekable();
1463
1464 let mut display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)> = editor
1465 .diff_map
1466 .snapshot
1467 .diff_hunks_in_range(buffer_start..buffer_end, &buffer_snapshot)
1468 .filter_map(|hunk| {
1469 let display_hunk = diff_hunk_to_display(&hunk, snapshot);
1470
1471 if let DisplayDiffHunk::Unfolded {
1472 multi_buffer_range,
1473 status,
1474 ..
1475 } = &display_hunk
1476 {
1477 let mut is_expanded = false;
1478 while let Some(expanded_hunk) = expanded_hunks.peek() {
1479 match expanded_hunk
1480 .hunk_range
1481 .start
1482 .cmp(&multi_buffer_range.start, &buffer_snapshot)
1483 {
1484 Ordering::Less => {
1485 expanded_hunks.next();
1486 }
1487 Ordering::Equal => {
1488 is_expanded = true;
1489 break;
1490 }
1491 Ordering::Greater => {
1492 break;
1493 }
1494 }
1495 }
1496 match status {
1497 DiffHunkStatus::Added => {}
1498 DiffHunkStatus::Modified => {}
1499 DiffHunkStatus::Removed => {
1500 if is_expanded {
1501 return None;
1502 }
1503 }
1504 }
1505 }
1506
1507 Some(display_hunk)
1508 })
1509 .dedup()
1510 .map(|hunk| (hunk, None))
1511 .collect();
1512
1513 if let GitGutterSetting::TrackedFiles = git_gutter_setting {
1514 for (hunk, hitbox) in &mut display_hunks {
1515 if let DisplayDiffHunk::Unfolded { .. } = hunk {
1516 let hunk_bounds = Self::diff_hunk_bounds(
1517 snapshot,
1518 line_height,
1519 gutter_hitbox.bounds,
1520 &hunk,
1521 );
1522 *hitbox = Some(cx.insert_hitbox(hunk_bounds, true));
1523 };
1524 }
1525 }
1526
1527 display_hunks
1528 })
1529 }
1530
1531 #[allow(clippy::too_many_arguments)]
1532 fn layout_inline_blame(
1533 &self,
1534 display_row: DisplayRow,
1535 display_snapshot: &DisplaySnapshot,
1536 line_layout: &LineWithInvisibles,
1537 crease_trailer: Option<&CreaseTrailerLayout>,
1538 em_width: Pixels,
1539 content_origin: gpui::Point<Pixels>,
1540 scroll_pixel_position: gpui::Point<Pixels>,
1541 line_height: Pixels,
1542 cx: &mut WindowContext,
1543 ) -> Option<AnyElement> {
1544 if !self
1545 .editor
1546 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1547 {
1548 return None;
1549 }
1550
1551 let workspace = self
1552 .editor
1553 .read(cx)
1554 .workspace
1555 .as_ref()
1556 .map(|(w, _)| w.clone());
1557
1558 let display_point = DisplayPoint::new(display_row, 0);
1559 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1560
1561 let blame = self.editor.read(cx).blame.clone()?;
1562 let blame_entry = blame
1563 .update(cx, |blame, cx| {
1564 blame.blame_for_rows([Some(buffer_row)], cx).next()
1565 })
1566 .flatten()?;
1567
1568 let mut element =
1569 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1570
1571 let start_y = content_origin.y
1572 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1573
1574 let start_x = {
1575 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1576
1577 let line_end = if let Some(crease_trailer) = crease_trailer {
1578 crease_trailer.bounds.right()
1579 } else {
1580 content_origin.x - scroll_pixel_position.x + line_layout.width
1581 };
1582 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1583
1584 let min_column_in_pixels = ProjectSettings::get_global(cx)
1585 .git
1586 .inline_blame
1587 .and_then(|settings| settings.min_column)
1588 .map(|col| self.column_pixels(col as usize, cx))
1589 .unwrap_or(px(0.));
1590 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1591
1592 cmp::max(padded_line_end, min_start)
1593 };
1594
1595 let absolute_offset = point(start_x, start_y);
1596 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1597
1598 Some(element)
1599 }
1600
1601 #[allow(clippy::too_many_arguments)]
1602 fn layout_blame_entries(
1603 &self,
1604 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1605 em_width: Pixels,
1606 scroll_position: gpui::Point<f32>,
1607 line_height: Pixels,
1608 gutter_hitbox: &Hitbox,
1609 max_width: Option<Pixels>,
1610 cx: &mut WindowContext,
1611 ) -> Option<Vec<AnyElement>> {
1612 if !self
1613 .editor
1614 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1615 {
1616 return None;
1617 }
1618
1619 let blame = self.editor.read(cx).blame.clone()?;
1620 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1621 blame.blame_for_rows(buffer_rows, cx).collect()
1622 });
1623
1624 let width = if let Some(max_width) = max_width {
1625 AvailableSpace::Definite(max_width)
1626 } else {
1627 AvailableSpace::MaxContent
1628 };
1629 let scroll_top = scroll_position.y * line_height;
1630 let start_x = em_width;
1631
1632 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1633
1634 let shaped_lines = blamed_rows
1635 .into_iter()
1636 .enumerate()
1637 .flat_map(|(ix, blame_entry)| {
1638 if let Some(blame_entry) = blame_entry {
1639 let mut element = render_blame_entry(
1640 ix,
1641 &blame,
1642 blame_entry,
1643 &self.style,
1644 &mut last_used_color,
1645 self.editor.clone(),
1646 cx,
1647 );
1648
1649 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1650 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1651
1652 element.prepaint_as_root(
1653 absolute_offset,
1654 size(width, AvailableSpace::MinContent),
1655 cx,
1656 );
1657
1658 Some(element)
1659 } else {
1660 None
1661 }
1662 })
1663 .collect();
1664
1665 Some(shaped_lines)
1666 }
1667
1668 #[allow(clippy::too_many_arguments)]
1669 fn layout_indent_guides(
1670 &self,
1671 content_origin: gpui::Point<Pixels>,
1672 text_origin: gpui::Point<Pixels>,
1673 visible_buffer_range: Range<MultiBufferRow>,
1674 scroll_pixel_position: gpui::Point<Pixels>,
1675 line_height: Pixels,
1676 snapshot: &DisplaySnapshot,
1677 cx: &mut WindowContext,
1678 ) -> Option<Vec<IndentGuideLayout>> {
1679 let indent_guides = self.editor.update(cx, |editor, cx| {
1680 editor.indent_guides(visible_buffer_range, snapshot, cx)
1681 })?;
1682
1683 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1684 editor
1685 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1686 .unwrap_or_default()
1687 });
1688
1689 Some(
1690 indent_guides
1691 .into_iter()
1692 .enumerate()
1693 .filter_map(|(i, indent_guide)| {
1694 let single_indent_width =
1695 self.column_pixels(indent_guide.tab_size as usize, cx);
1696 let total_width = single_indent_width * indent_guide.depth as f32;
1697 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1698 if start_x >= text_origin.x {
1699 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1700 indent_guide.multibuffer_row_range.clone(),
1701 line_height,
1702 snapshot,
1703 );
1704
1705 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1706
1707 Some(IndentGuideLayout {
1708 origin: point(start_x, start_y),
1709 length,
1710 single_indent_width,
1711 depth: indent_guide.depth,
1712 active: active_indent_guide_indices.contains(&i),
1713 settings: indent_guide.settings,
1714 })
1715 } else {
1716 None
1717 }
1718 })
1719 .collect(),
1720 )
1721 }
1722
1723 fn calculate_indent_guide_bounds(
1724 row_range: Range<MultiBufferRow>,
1725 line_height: Pixels,
1726 snapshot: &DisplaySnapshot,
1727 ) -> (gpui::Pixels, gpui::Pixels) {
1728 let start_point = Point::new(row_range.start.0, 0);
1729 let end_point = Point::new(row_range.end.0, 0);
1730
1731 let row_range = start_point.to_display_point(snapshot).row()
1732 ..end_point.to_display_point(snapshot).row();
1733
1734 let mut prev_line = start_point;
1735 prev_line.row = prev_line.row.saturating_sub(1);
1736 let prev_line = prev_line.to_display_point(snapshot).row();
1737
1738 let mut cons_line = end_point;
1739 cons_line.row += 1;
1740 let cons_line = cons_line.to_display_point(snapshot).row();
1741
1742 let mut offset_y = row_range.start.0 as f32 * line_height;
1743 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1744
1745 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1746 if row_range.end == cons_line {
1747 length += line_height;
1748 }
1749
1750 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1751 // we want to extend the indent guide to the start of the block.
1752 let mut block_height = 0;
1753 let mut block_offset = 0;
1754 let mut found_excerpt_header = false;
1755 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1756 if matches!(block, Block::ExcerptBoundary { .. }) {
1757 found_excerpt_header = true;
1758 break;
1759 }
1760 block_offset += block.height();
1761 block_height += block.height();
1762 }
1763 if !found_excerpt_header {
1764 offset_y -= block_offset as f32 * line_height;
1765 length += block_height as f32 * line_height;
1766 }
1767
1768 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1769 // we want to ensure that the indent guide stops before the excerpt header.
1770 let mut block_height = 0;
1771 let mut found_excerpt_header = false;
1772 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1773 if matches!(block, Block::ExcerptBoundary { .. }) {
1774 found_excerpt_header = true;
1775 }
1776 block_height += block.height();
1777 }
1778 if found_excerpt_header {
1779 length -= block_height as f32 * line_height;
1780 }
1781
1782 (offset_y, length)
1783 }
1784
1785 #[allow(clippy::too_many_arguments)]
1786 fn layout_run_indicators(
1787 &self,
1788 line_height: Pixels,
1789 range: Range<DisplayRow>,
1790 scroll_pixel_position: gpui::Point<Pixels>,
1791 gutter_dimensions: &GutterDimensions,
1792 gutter_hitbox: &Hitbox,
1793 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1794 snapshot: &EditorSnapshot,
1795 cx: &mut WindowContext,
1796 ) -> Vec<AnyElement> {
1797 self.editor.update(cx, |editor, cx| {
1798 let active_task_indicator_row =
1799 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1800 deployed_from_indicator,
1801 actions,
1802 ..
1803 })) = editor.context_menu.borrow().as_ref()
1804 {
1805 actions
1806 .tasks
1807 .as_ref()
1808 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1809 .or(*deployed_from_indicator)
1810 } else {
1811 None
1812 };
1813
1814 let offset_range_start = snapshot
1815 .display_point_to_anchor(DisplayPoint::new(range.start, 0), Bias::Left)
1816 .to_offset(&snapshot.buffer_snapshot);
1817 let offset_range_end = snapshot
1818 .display_point_to_anchor(DisplayPoint::new(range.end, 0), Bias::Right)
1819 .to_offset(&snapshot.buffer_snapshot);
1820
1821 editor
1822 .tasks
1823 .iter()
1824 .filter_map(|(_, tasks)| {
1825 if tasks.offset.0 < offset_range_start || tasks.offset.0 >= offset_range_end {
1826 return None;
1827 }
1828 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1829 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1830 let buffer_folded = snapshot
1831 .buffer_snapshot
1832 .buffer_line_for_row(multibuffer_row)
1833 .map(|(buffer_snapshot, _)| buffer_snapshot.remote_id())
1834 .map(|buffer_id| editor.buffer_folded(buffer_id, cx))
1835 .unwrap_or(false);
1836 if buffer_folded {
1837 return None;
1838 }
1839
1840 if snapshot.is_line_folded(multibuffer_row) {
1841 // Skip folded indicators, unless it's the starting line of a fold.
1842 if multibuffer_row
1843 .0
1844 .checked_sub(1)
1845 .map_or(false, |previous_row| {
1846 snapshot.is_line_folded(MultiBufferRow(previous_row))
1847 })
1848 {
1849 return None;
1850 }
1851 }
1852 let display_row = multibuffer_point.to_display_point(snapshot).row();
1853 let button = editor.render_run_indicator(
1854 &self.style,
1855 Some(display_row) == active_task_indicator_row,
1856 display_row,
1857 cx,
1858 );
1859
1860 let button = prepaint_gutter_button(
1861 button,
1862 display_row,
1863 line_height,
1864 gutter_dimensions,
1865 scroll_pixel_position,
1866 gutter_hitbox,
1867 rows_with_hunk_bounds,
1868 cx,
1869 );
1870 Some(button)
1871 })
1872 .collect_vec()
1873 })
1874 }
1875
1876 #[allow(clippy::too_many_arguments)]
1877 fn layout_code_actions_indicator(
1878 &self,
1879 line_height: Pixels,
1880 newest_selection_head: DisplayPoint,
1881 scroll_pixel_position: gpui::Point<Pixels>,
1882 gutter_dimensions: &GutterDimensions,
1883 gutter_hitbox: &Hitbox,
1884 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1885 cx: &mut WindowContext,
1886 ) -> Option<AnyElement> {
1887 let mut active = false;
1888 let mut button = None;
1889 let row = newest_selection_head.row();
1890 self.editor.update(cx, |editor, cx| {
1891 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1892 deployed_from_indicator,
1893 ..
1894 })) = editor.context_menu.borrow().as_ref()
1895 {
1896 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1897 };
1898 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1899 });
1900
1901 let button = prepaint_gutter_button(
1902 button?,
1903 row,
1904 line_height,
1905 gutter_dimensions,
1906 scroll_pixel_position,
1907 gutter_hitbox,
1908 rows_with_hunk_bounds,
1909 cx,
1910 );
1911
1912 Some(button)
1913 }
1914
1915 fn get_participant_color(
1916 participant_index: Option<ParticipantIndex>,
1917 cx: &WindowContext,
1918 ) -> PlayerColor {
1919 if let Some(index) = participant_index {
1920 cx.theme().players().color_for_participant(index.0)
1921 } else {
1922 cx.theme().players().absent()
1923 }
1924 }
1925
1926 fn calculate_relative_line_numbers(
1927 &self,
1928 snapshot: &EditorSnapshot,
1929 rows: &Range<DisplayRow>,
1930 relative_to: Option<DisplayRow>,
1931 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1932 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1933 let Some(relative_to) = relative_to else {
1934 return relative_rows;
1935 };
1936
1937 let start = rows.start.min(relative_to);
1938 let end = rows.end.max(relative_to);
1939
1940 let buffer_rows = snapshot
1941 .buffer_rows(start)
1942 .take(1 + end.minus(start) as usize)
1943 .collect::<Vec<_>>();
1944
1945 let head_idx = relative_to.minus(start);
1946 let mut delta = 1;
1947 let mut i = head_idx + 1;
1948 while i < buffer_rows.len() as u32 {
1949 if buffer_rows[i as usize].is_some() {
1950 if rows.contains(&DisplayRow(i + start.0)) {
1951 relative_rows.insert(DisplayRow(i + start.0), delta);
1952 }
1953 delta += 1;
1954 }
1955 i += 1;
1956 }
1957 delta = 1;
1958 i = head_idx.min(buffer_rows.len() as u32 - 1);
1959 while i > 0 && buffer_rows[i as usize].is_none() {
1960 i -= 1;
1961 }
1962
1963 while i > 0 {
1964 i -= 1;
1965 if buffer_rows[i as usize].is_some() {
1966 if rows.contains(&DisplayRow(i + start.0)) {
1967 relative_rows.insert(DisplayRow(i + start.0), delta);
1968 }
1969 delta += 1;
1970 }
1971 }
1972
1973 relative_rows
1974 }
1975
1976 fn layout_line_numbers(
1977 &self,
1978 rows: Range<DisplayRow>,
1979 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1980 active_rows: &BTreeMap<DisplayRow, bool>,
1981 newest_selection_head: Option<DisplayPoint>,
1982 snapshot: &EditorSnapshot,
1983 cx: &mut WindowContext,
1984 ) -> Vec<Option<ShapedLine>> {
1985 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
1986 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
1987 });
1988 if !include_line_numbers {
1989 return Vec::new();
1990 }
1991
1992 let (newest_selection_head, is_relative) = self.editor.update(cx, |editor, cx| {
1993 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1994 let newest = editor.selections.newest::<Point>(cx);
1995 SelectionLayout::new(
1996 newest,
1997 editor.selections.line_mode,
1998 editor.cursor_shape,
1999 &snapshot.display_snapshot,
2000 true,
2001 true,
2002 None,
2003 )
2004 .head
2005 });
2006 let is_relative = editor.should_use_relative_line_numbers(cx);
2007 (newest_selection_head, is_relative)
2008 });
2009 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
2010
2011 let relative_to = if is_relative {
2012 Some(newest_selection_head.row())
2013 } else {
2014 None
2015 };
2016 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
2017 let mut line_number = String::new();
2018 buffer_rows
2019 .into_iter()
2020 .enumerate()
2021 .map(|(ix, multibuffer_row)| {
2022 let multibuffer_row = multibuffer_row?;
2023 let display_row = DisplayRow(rows.start.0 + ix as u32);
2024 let color = if active_rows.contains_key(&display_row) {
2025 cx.theme().colors().editor_active_line_number
2026 } else {
2027 cx.theme().colors().editor_line_number
2028 };
2029 line_number.clear();
2030 let default_number = multibuffer_row.0 + 1;
2031 let number = relative_rows
2032 .get(&DisplayRow(ix as u32 + rows.start.0))
2033 .unwrap_or(&default_number);
2034 write!(&mut line_number, "{number}").unwrap();
2035 let run = TextRun {
2036 len: line_number.len(),
2037 font: self.style.text.font(),
2038 color,
2039 background_color: None,
2040 underline: None,
2041 strikethrough: None,
2042 };
2043 let shaped_line = cx
2044 .text_system()
2045 .shape_line(line_number.clone().into(), font_size, &[run])
2046 .unwrap();
2047 Some(shaped_line)
2048 })
2049 .collect()
2050 }
2051
2052 fn layout_crease_toggles(
2053 &self,
2054 rows: Range<DisplayRow>,
2055 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2056 active_rows: &BTreeMap<DisplayRow, bool>,
2057 snapshot: &EditorSnapshot,
2058 cx: &mut WindowContext,
2059 ) -> Vec<Option<AnyElement>> {
2060 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
2061 && snapshot.mode == EditorMode::Full
2062 && self.editor.read(cx).is_singleton(cx);
2063 if include_fold_statuses {
2064 buffer_rows
2065 .into_iter()
2066 .enumerate()
2067 .map(|(ix, row)| {
2068 if let Some(multibuffer_row) = row {
2069 let display_row = DisplayRow(rows.start.0 + ix as u32);
2070 let active = active_rows.contains_key(&display_row);
2071 snapshot.render_crease_toggle(
2072 multibuffer_row,
2073 active,
2074 self.editor.clone(),
2075 cx,
2076 )
2077 } else {
2078 None
2079 }
2080 })
2081 .collect()
2082 } else {
2083 Vec::new()
2084 }
2085 }
2086
2087 fn layout_crease_trailers(
2088 &self,
2089 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2090 snapshot: &EditorSnapshot,
2091 cx: &mut WindowContext,
2092 ) -> Vec<Option<AnyElement>> {
2093 buffer_rows
2094 .into_iter()
2095 .map(|row| {
2096 if let Some(multibuffer_row) = row {
2097 snapshot.render_crease_trailer(multibuffer_row, cx)
2098 } else {
2099 None
2100 }
2101 })
2102 .collect()
2103 }
2104
2105 fn layout_lines(
2106 rows: Range<DisplayRow>,
2107 snapshot: &EditorSnapshot,
2108 style: &EditorStyle,
2109 editor_width: Pixels,
2110 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2111 cx: &mut WindowContext,
2112 ) -> Vec<LineWithInvisibles> {
2113 if rows.start >= rows.end {
2114 return Vec::new();
2115 }
2116
2117 // Show the placeholder when the editor is empty
2118 if snapshot.is_empty() {
2119 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2120 let placeholder_color = cx.theme().colors().text_placeholder;
2121 let placeholder_text = snapshot.placeholder_text();
2122
2123 let placeholder_lines = placeholder_text
2124 .as_ref()
2125 .map_or("", AsRef::as_ref)
2126 .split('\n')
2127 .skip(rows.start.0 as usize)
2128 .chain(iter::repeat(""))
2129 .take(rows.len());
2130 placeholder_lines
2131 .filter_map(move |line| {
2132 let run = TextRun {
2133 len: line.len(),
2134 font: style.text.font(),
2135 color: placeholder_color,
2136 background_color: None,
2137 underline: Default::default(),
2138 strikethrough: None,
2139 };
2140 cx.text_system()
2141 .shape_line(line.to_string().into(), font_size, &[run])
2142 .log_err()
2143 })
2144 .map(|line| LineWithInvisibles {
2145 width: line.width,
2146 len: line.len,
2147 fragments: smallvec![LineFragment::Text(line)],
2148 invisibles: Vec::new(),
2149 font_size,
2150 })
2151 .collect()
2152 } else {
2153 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
2154 LineWithInvisibles::from_chunks(
2155 chunks,
2156 &style,
2157 MAX_LINE_LEN,
2158 rows.len(),
2159 snapshot.mode,
2160 editor_width,
2161 is_row_soft_wrapped,
2162 cx,
2163 )
2164 }
2165 }
2166
2167 fn prepaint_lines(
2168 &self,
2169 start_row: DisplayRow,
2170 line_layouts: &mut [LineWithInvisibles],
2171 line_height: Pixels,
2172 scroll_pixel_position: gpui::Point<Pixels>,
2173 content_origin: gpui::Point<Pixels>,
2174 cx: &mut WindowContext,
2175 ) -> SmallVec<[AnyElement; 1]> {
2176 let mut line_elements = SmallVec::new();
2177 for (ix, line) in line_layouts.iter_mut().enumerate() {
2178 let row = start_row + DisplayRow(ix as u32);
2179 line.prepaint(
2180 line_height,
2181 scroll_pixel_position,
2182 row,
2183 content_origin,
2184 &mut line_elements,
2185 cx,
2186 );
2187 }
2188 line_elements
2189 }
2190
2191 #[allow(clippy::too_many_arguments)]
2192 fn render_block(
2193 &self,
2194 block: &Block,
2195 available_width: AvailableSpace,
2196 block_id: BlockId,
2197 block_row_start: DisplayRow,
2198 snapshot: &EditorSnapshot,
2199 text_x: Pixels,
2200 rows: &Range<DisplayRow>,
2201 line_layouts: &[LineWithInvisibles],
2202 gutter_dimensions: &GutterDimensions,
2203 line_height: Pixels,
2204 em_width: Pixels,
2205 text_hitbox: &Hitbox,
2206 editor_width: Pixels,
2207 scroll_width: &mut Pixels,
2208 resized_blocks: &mut HashMap<CustomBlockId, u32>,
2209 selections: &[Selection<Point>],
2210 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2211 cx: &mut WindowContext,
2212 ) -> (AnyElement, Size<Pixels>) {
2213 let header_padding = px(6.0);
2214 let mut element = match block {
2215 Block::Custom(block) => {
2216 let block_start = block.start().to_point(&snapshot.buffer_snapshot);
2217 let block_end = block.end().to_point(&snapshot.buffer_snapshot);
2218 let align_to = block_start.to_display_point(snapshot);
2219 let anchor_x = text_x
2220 + if rows.contains(&align_to.row()) {
2221 line_layouts[align_to.row().minus(rows.start) as usize]
2222 .x_for_index(align_to.column() as usize)
2223 } else {
2224 layout_line(
2225 align_to.row(),
2226 snapshot,
2227 &self.style,
2228 editor_width,
2229 is_row_soft_wrapped,
2230 cx,
2231 )
2232 .x_for_index(align_to.column() as usize)
2233 };
2234
2235 let selected = selections
2236 .binary_search_by(|selection| {
2237 if selection.end <= block_start {
2238 Ordering::Less
2239 } else if selection.start >= block_end {
2240 Ordering::Greater
2241 } else {
2242 Ordering::Equal
2243 }
2244 })
2245 .is_ok();
2246
2247 div()
2248 .size_full()
2249 .child(block.render(&mut BlockContext {
2250 context: cx,
2251 anchor_x,
2252 gutter_dimensions,
2253 line_height,
2254 em_width,
2255 block_id,
2256 selected,
2257 max_width: text_hitbox.size.width.max(*scroll_width),
2258 editor_style: &self.style,
2259 }))
2260 .into_any()
2261 }
2262
2263 Block::FoldedBuffer {
2264 first_excerpt,
2265 prev_excerpt,
2266 show_excerpt_controls,
2267 height,
2268 } => {
2269 let block_start = DisplayPoint::new(block_row_start, 0).to_point(snapshot);
2270 let block_end = DisplayPoint::new(block_row_start + *height, 0).to_point(snapshot);
2271 let selected = selections
2272 .binary_search_by(|selection| {
2273 if selection.end <= block_start {
2274 Ordering::Less
2275 } else if selection.start >= block_end {
2276 Ordering::Greater
2277 } else {
2278 Ordering::Equal
2279 }
2280 })
2281 .is_ok();
2282 let icon_offset = gutter_dimensions.width
2283 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2284
2285 let mut result = v_flex().id(block_id).w_full();
2286 if let Some(prev_excerpt) = prev_excerpt {
2287 if *show_excerpt_controls {
2288 result = result.child(
2289 h_flex()
2290 .w(icon_offset)
2291 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2292 .flex_none()
2293 .justify_end()
2294 .child(self.render_expand_excerpt_button(
2295 prev_excerpt.id,
2296 ExpandExcerptDirection::Down,
2297 IconName::ArrowDownFromLine,
2298 cx,
2299 )),
2300 );
2301 }
2302 }
2303
2304 let jump_data = jump_data(snapshot, block_row_start, *height, first_excerpt, cx);
2305 result
2306 .child(self.render_buffer_header(
2307 first_excerpt,
2308 header_padding,
2309 true,
2310 selected,
2311 jump_data,
2312 cx,
2313 ))
2314 .into_any_element()
2315 }
2316 Block::ExcerptBoundary {
2317 prev_excerpt,
2318 next_excerpt,
2319 show_excerpt_controls,
2320 height,
2321 starts_new_buffer,
2322 } => {
2323 let icon_offset = gutter_dimensions.width
2324 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2325
2326 let mut result = v_flex().id(block_id).w_full();
2327 if let Some(prev_excerpt) = prev_excerpt {
2328 if *show_excerpt_controls {
2329 result = result.child(
2330 h_flex()
2331 .w(icon_offset)
2332 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2333 .flex_none()
2334 .justify_end()
2335 .child(self.render_expand_excerpt_button(
2336 prev_excerpt.id,
2337 ExpandExcerptDirection::Down,
2338 IconName::ArrowDownFromLine,
2339 cx,
2340 )),
2341 );
2342 }
2343 }
2344
2345 if let Some(next_excerpt) = next_excerpt {
2346 let jump_data = jump_data(snapshot, block_row_start, *height, next_excerpt, cx);
2347 if *starts_new_buffer {
2348 result = result.child(self.render_buffer_header(
2349 next_excerpt,
2350 header_padding,
2351 false,
2352 false,
2353 jump_data,
2354 cx,
2355 ));
2356 if *show_excerpt_controls {
2357 result = result.child(
2358 h_flex()
2359 .w(icon_offset)
2360 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2361 .flex_none()
2362 .justify_end()
2363 .child(self.render_expand_excerpt_button(
2364 next_excerpt.id,
2365 ExpandExcerptDirection::Up,
2366 IconName::ArrowUpFromLine,
2367 cx,
2368 )),
2369 );
2370 }
2371 } else {
2372 let editor = self.editor.clone();
2373 result = result.child(
2374 h_flex()
2375 .id("excerpt header block")
2376 .group("excerpt-jump-action")
2377 .justify_start()
2378 .w_full()
2379 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2380 .relative()
2381 .child(
2382 div()
2383 .top(px(0.))
2384 .absolute()
2385 .w_full()
2386 .h_px()
2387 .bg(cx.theme().colors().border_variant)
2388 .group_hover("excerpt-jump-action", |style| {
2389 style.bg(cx.theme().colors().border)
2390 }),
2391 )
2392 .cursor_pointer()
2393 .on_click({
2394 let jump_data = jump_data.clone();
2395 cx.listener_for(&self.editor, {
2396 let jump_data = jump_data.clone();
2397 move |editor, e: &ClickEvent, cx| {
2398 cx.stop_propagation();
2399 editor.open_excerpts_common(
2400 Some(jump_data.clone()),
2401 e.down.modifiers.secondary(),
2402 cx,
2403 );
2404 }
2405 })
2406 })
2407 .tooltip({
2408 let jump_data = jump_data.clone();
2409 move |cx| {
2410 let jump_message = format!(
2411 "Jump to {}:L{}",
2412 match &jump_data.path {
2413 Some(project_path) =>
2414 project_path.path.display().to_string(),
2415 None => {
2416 let editor = editor.read(cx);
2417 editor
2418 .file_at(jump_data.position, cx)
2419 .map(|file| {
2420 file.full_path(cx).display().to_string()
2421 })
2422 .or_else(|| {
2423 Some(
2424 editor
2425 .tab_description(0, cx)?
2426 .to_string(),
2427 )
2428 })
2429 .unwrap_or_else(|| {
2430 "Unknown buffer".to_string()
2431 })
2432 }
2433 },
2434 jump_data.position.row + 1
2435 );
2436 Tooltip::for_action(jump_message, &OpenExcerpts, cx)
2437 }
2438 })
2439 .child(
2440 h_flex()
2441 .w(icon_offset)
2442 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32
2443 * cx.line_height())
2444 .flex_none()
2445 .justify_end()
2446 .child(if *show_excerpt_controls {
2447 self.render_expand_excerpt_button(
2448 next_excerpt.id,
2449 ExpandExcerptDirection::Up,
2450 IconName::ArrowUpFromLine,
2451 cx,
2452 )
2453 } else {
2454 ButtonLike::new("jump-icon")
2455 .style(ButtonStyle::Transparent)
2456 .child(
2457 svg()
2458 .path(IconName::ArrowUpRight.path())
2459 .size(IconSize::XSmall.rems())
2460 .text_color(
2461 cx.theme().colors().border_variant,
2462 )
2463 .group_hover(
2464 "excerpt-jump-action",
2465 |style| {
2466 style.text_color(
2467 cx.theme().colors().border,
2468 )
2469 },
2470 ),
2471 )
2472 }),
2473 ),
2474 );
2475 }
2476 }
2477
2478 result.into_any()
2479 }
2480 };
2481
2482 // Discover the element's content height, then round up to the nearest multiple of line height.
2483 let preliminary_size =
2484 element.layout_as_root(size(available_width, AvailableSpace::MinContent), cx);
2485 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2486 let final_size = if preliminary_size.height == quantized_height {
2487 preliminary_size
2488 } else {
2489 element.layout_as_root(size(available_width, quantized_height.into()), cx)
2490 };
2491
2492 if let BlockId::Custom(custom_block_id) = block_id {
2493 if block.height() > 0 {
2494 let element_height_in_lines =
2495 ((final_size.height / line_height).ceil() as u32).max(1);
2496 if element_height_in_lines != block.height() {
2497 resized_blocks.insert(custom_block_id, element_height_in_lines);
2498 }
2499 }
2500 }
2501
2502 (element, final_size)
2503 }
2504
2505 fn render_buffer_header(
2506 &self,
2507 for_excerpt: &ExcerptInfo,
2508 header_padding: Pixels,
2509 is_folded: bool,
2510 is_selected: bool,
2511 jump_data: JumpData,
2512 cx: &mut WindowContext,
2513 ) -> Div {
2514 let include_root = self
2515 .editor
2516 .read(cx)
2517 .project
2518 .as_ref()
2519 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2520 .unwrap_or_default();
2521 let path = for_excerpt.buffer.resolve_file_path(cx, include_root);
2522 let filename = path
2523 .as_ref()
2524 .and_then(|path| Some(path.file_name()?.to_string_lossy().to_string()));
2525 let parent_path = path
2526 .as_ref()
2527 .and_then(|path| Some(path.parent()?.to_string_lossy().to_string() + "/"));
2528
2529 let focus_handle = self.editor.focus_handle(cx);
2530
2531 div()
2532 .px(header_padding)
2533 .pt(header_padding)
2534 .w_full()
2535 .h(FILE_HEADER_HEIGHT as f32 * cx.line_height())
2536 .child(
2537 h_flex()
2538 .size_full()
2539 .gap_2()
2540 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2541 .pl_0p5()
2542 .pr_4()
2543 .rounded_md()
2544 .shadow_md()
2545 .border_1()
2546 .map(|div| {
2547 let border_color = if is_selected {
2548 cx.theme().colors().border_focused
2549 } else {
2550 cx.theme().colors().border
2551 };
2552 div.border_color(border_color)
2553 })
2554 .bg(cx.theme().colors().editor_subheader_background)
2555 .hover(|style| style.bg(cx.theme().colors().element_hover))
2556 .map(|header| {
2557 let editor = self.editor.clone();
2558 let buffer_id = for_excerpt.buffer_id;
2559 let toggle_chevron_icon =
2560 FileIcons::get_chevron_icon(!is_folded, cx).map(Icon::from_path);
2561 header.child(
2562 div()
2563 .hover(|style| style.bg(cx.theme().colors().element_selected))
2564 .rounded_sm()
2565 .child(
2566 ButtonLike::new("toggle-buffer-fold")
2567 .style(ui::ButtonStyle::Transparent)
2568 .size(ButtonSize::Large)
2569 .width(px(30.).into())
2570 .children(toggle_chevron_icon)
2571 .tooltip({
2572 let focus_handle = focus_handle.clone();
2573 move |cx| {
2574 Tooltip::for_action_in(
2575 "Toggle Excerpt Fold",
2576 &ToggleFold,
2577 &focus_handle,
2578 cx,
2579 )
2580 }
2581 })
2582 .on_click(move |_, cx| {
2583 if is_folded {
2584 editor.update(cx, |editor, cx| {
2585 editor.unfold_buffer(buffer_id, cx);
2586 });
2587 } else {
2588 editor.update(cx, |editor, cx| {
2589 editor.fold_buffer(buffer_id, cx);
2590 });
2591 }
2592 }),
2593 ),
2594 )
2595 })
2596 .child(
2597 h_flex()
2598 .id("path header block")
2599 .size_full()
2600 .justify_between()
2601 .child(
2602 h_flex()
2603 .gap_2()
2604 .child(
2605 filename
2606 .map(SharedString::from)
2607 .unwrap_or_else(|| "untitled".into()),
2608 )
2609 .when_some(parent_path, |then, path| {
2610 then.child(
2611 div()
2612 .child(path)
2613 .text_color(cx.theme().colors().text_muted),
2614 )
2615 }),
2616 )
2617 .child(Icon::new(IconName::ArrowUpRight).size(IconSize::Small))
2618 .cursor_pointer()
2619 .tooltip({
2620 let focus_handle = focus_handle.clone();
2621 move |cx| {
2622 Tooltip::for_action_in(
2623 "Jump To File",
2624 &OpenExcerpts,
2625 &focus_handle,
2626 cx,
2627 )
2628 }
2629 })
2630 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
2631 .on_click(cx.listener_for(&self.editor, {
2632 move |editor, e: &ClickEvent, cx| {
2633 editor.open_excerpts_common(
2634 Some(jump_data.clone()),
2635 e.down.modifiers.secondary(),
2636 cx,
2637 );
2638 }
2639 })),
2640 ),
2641 )
2642 }
2643
2644 fn render_expand_excerpt_button(
2645 &self,
2646 excerpt_id: ExcerptId,
2647 direction: ExpandExcerptDirection,
2648 icon: IconName,
2649 cx: &mut WindowContext,
2650 ) -> ButtonLike {
2651 ButtonLike::new("expand-icon")
2652 .style(ButtonStyle::Transparent)
2653 .child(
2654 svg()
2655 .path(icon.path())
2656 .size(IconSize::XSmall.rems())
2657 .text_color(cx.theme().colors().editor_line_number)
2658 .group("")
2659 .hover(|style| style.text_color(cx.theme().colors().editor_active_line_number)),
2660 )
2661 .on_click(cx.listener_for(&self.editor, {
2662 move |editor, _, cx| {
2663 editor.expand_excerpt(excerpt_id, direction, cx);
2664 }
2665 }))
2666 .tooltip({
2667 move |cx| Tooltip::for_action("Expand Excerpt", &ExpandExcerpts { lines: 0 }, cx)
2668 })
2669 }
2670
2671 #[allow(clippy::too_many_arguments)]
2672 fn render_blocks(
2673 &self,
2674 rows: Range<DisplayRow>,
2675 snapshot: &EditorSnapshot,
2676 hitbox: &Hitbox,
2677 text_hitbox: &Hitbox,
2678 editor_width: Pixels,
2679 scroll_width: &mut Pixels,
2680 gutter_dimensions: &GutterDimensions,
2681 em_width: Pixels,
2682 text_x: Pixels,
2683 line_height: Pixels,
2684 line_layouts: &[LineWithInvisibles],
2685 selections: &[Selection<Point>],
2686 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2687 cx: &mut WindowContext,
2688 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2689 let (fixed_blocks, non_fixed_blocks) = snapshot
2690 .blocks_in_range(rows.clone())
2691 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2692
2693 let mut focused_block = self
2694 .editor
2695 .update(cx, |editor, _| editor.take_focused_block());
2696 let mut fixed_block_max_width = Pixels::ZERO;
2697 let mut blocks = Vec::new();
2698 let mut resized_blocks = HashMap::default();
2699
2700 for (row, block) in fixed_blocks {
2701 let block_id = block.id();
2702
2703 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2704 focused_block = None;
2705 }
2706
2707 let (element, element_size) = self.render_block(
2708 block,
2709 AvailableSpace::MinContent,
2710 block_id,
2711 row,
2712 snapshot,
2713 text_x,
2714 &rows,
2715 line_layouts,
2716 gutter_dimensions,
2717 line_height,
2718 em_width,
2719 text_hitbox,
2720 editor_width,
2721 scroll_width,
2722 &mut resized_blocks,
2723 selections,
2724 is_row_soft_wrapped,
2725 cx,
2726 );
2727 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2728 blocks.push(BlockLayout {
2729 id: block_id,
2730 row: Some(row),
2731 element,
2732 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
2733 style: BlockStyle::Fixed,
2734 });
2735 }
2736 for (row, block) in non_fixed_blocks {
2737 let style = block.style();
2738 let width = match style {
2739 BlockStyle::Sticky => hitbox.size.width,
2740 BlockStyle::Flex => hitbox
2741 .size
2742 .width
2743 .max(fixed_block_max_width)
2744 .max(gutter_dimensions.width + *scroll_width),
2745 BlockStyle::Fixed => unreachable!(),
2746 };
2747 let block_id = block.id();
2748
2749 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2750 focused_block = None;
2751 }
2752
2753 let (element, element_size) = self.render_block(
2754 block,
2755 width.into(),
2756 block_id,
2757 row,
2758 snapshot,
2759 text_x,
2760 &rows,
2761 line_layouts,
2762 gutter_dimensions,
2763 line_height,
2764 em_width,
2765 text_hitbox,
2766 editor_width,
2767 scroll_width,
2768 &mut resized_blocks,
2769 selections,
2770 is_row_soft_wrapped,
2771 cx,
2772 );
2773
2774 blocks.push(BlockLayout {
2775 id: block_id,
2776 row: Some(row),
2777 element,
2778 available_space: size(width.into(), element_size.height.into()),
2779 style,
2780 });
2781 }
2782
2783 if let Some(focused_block) = focused_block {
2784 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2785 if focus_handle.is_focused(cx) {
2786 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2787 let style = block.style();
2788 let width = match style {
2789 BlockStyle::Fixed => AvailableSpace::MinContent,
2790 BlockStyle::Flex => AvailableSpace::Definite(
2791 hitbox
2792 .size
2793 .width
2794 .max(fixed_block_max_width)
2795 .max(gutter_dimensions.width + *scroll_width),
2796 ),
2797 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2798 };
2799
2800 let (element, element_size) = self.render_block(
2801 &block,
2802 width,
2803 focused_block.id,
2804 rows.end,
2805 snapshot,
2806 text_x,
2807 &rows,
2808 line_layouts,
2809 gutter_dimensions,
2810 line_height,
2811 em_width,
2812 text_hitbox,
2813 editor_width,
2814 scroll_width,
2815 &mut resized_blocks,
2816 selections,
2817 is_row_soft_wrapped,
2818 cx,
2819 );
2820
2821 blocks.push(BlockLayout {
2822 id: block.id(),
2823 row: None,
2824 element,
2825 available_space: size(width, element_size.height.into()),
2826 style,
2827 });
2828 }
2829 }
2830 }
2831 }
2832
2833 if resized_blocks.is_empty() {
2834 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2835 Ok(blocks)
2836 } else {
2837 Err(resized_blocks)
2838 }
2839 }
2840
2841 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
2842 /// a restart of rendering for the editor based on the new sizes.
2843 fn layout_blocks(
2844 &self,
2845 blocks: &mut Vec<BlockLayout>,
2846 block_starts: &mut HashSet<DisplayRow>,
2847 hitbox: &Hitbox,
2848 line_height: Pixels,
2849 scroll_pixel_position: gpui::Point<Pixels>,
2850 cx: &mut WindowContext,
2851 ) {
2852 for block in blocks {
2853 let mut origin = if let Some(row) = block.row {
2854 block_starts.insert(row);
2855 hitbox.origin
2856 + point(
2857 Pixels::ZERO,
2858 row.as_f32() * line_height - scroll_pixel_position.y,
2859 )
2860 } else {
2861 // Position the block outside the visible area
2862 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2863 };
2864
2865 if !matches!(block.style, BlockStyle::Sticky) {
2866 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2867 }
2868
2869 let focus_handle = block
2870 .element
2871 .prepaint_as_root(origin, block.available_space, cx);
2872
2873 if let Some(focus_handle) = focus_handle {
2874 self.editor.update(cx, |editor, _cx| {
2875 editor.set_focused_block(FocusedBlock {
2876 id: block.id,
2877 focus_handle: focus_handle.downgrade(),
2878 });
2879 });
2880 }
2881 }
2882 }
2883
2884 #[allow(clippy::too_many_arguments)]
2885 fn layout_context_menu(
2886 &self,
2887 line_height: Pixels,
2888 text_hitbox: &Hitbox,
2889 content_origin: gpui::Point<Pixels>,
2890 start_row: DisplayRow,
2891 scroll_pixel_position: gpui::Point<Pixels>,
2892 line_layouts: &[LineWithInvisibles],
2893 newest_selection_head: DisplayPoint,
2894 gutter_overshoot: Pixels,
2895 cx: &mut WindowContext,
2896 ) {
2897 let Some(context_menu_origin) = self
2898 .editor
2899 .read(cx)
2900 .context_menu_origin(newest_selection_head)
2901 else {
2902 return;
2903 };
2904 let target_offset = match context_menu_origin {
2905 crate::ContextMenuOrigin::EditorPoint(display_point) => {
2906 let cursor_row_layout =
2907 &line_layouts[display_point.row().minus(start_row) as usize];
2908 gpui::Point {
2909 x: cursor_row_layout.x_for_index(display_point.column() as usize)
2910 - scroll_pixel_position.x,
2911 y: display_point.row().next_row().as_f32() * line_height
2912 - scroll_pixel_position.y,
2913 }
2914 }
2915 crate::ContextMenuOrigin::GutterIndicator(row) => {
2916 // Context menu was spawned via a click on a gutter. Ensure it's a bit closer to the indicator than just a plain first column of the
2917 // text field.
2918 gpui::Point {
2919 x: -gutter_overshoot,
2920 y: row.next_row().as_f32() * line_height - scroll_pixel_position.y,
2921 }
2922 }
2923 };
2924
2925 // If the context menu's max height won't fit below, then flip it above the line and display
2926 // it in reverse order. If the available space above is less than below.
2927 let unconstrained_max_height = line_height * 12. + POPOVER_Y_PADDING;
2928 let min_height = line_height * 3. + POPOVER_Y_PADDING;
2929 let target_position = content_origin + target_offset;
2930 let y_overflows_below = target_position.y + unconstrained_max_height > text_hitbox.bottom();
2931 let bottom_y_when_flipped = target_position.y - line_height;
2932 let available_above = bottom_y_when_flipped - text_hitbox.top();
2933 let available_below = text_hitbox.bottom() - target_position.y;
2934 let mut y_is_flipped = y_overflows_below && available_above > available_below;
2935 let mut max_height = cmp::min(
2936 unconstrained_max_height,
2937 if y_is_flipped {
2938 available_above
2939 } else {
2940 available_below
2941 },
2942 );
2943
2944 // If less than 3 lines fit within the text bounds, instead fit within the window.
2945 if max_height < 3. * line_height {
2946 let available_above = bottom_y_when_flipped;
2947 let available_below = cx.viewport_size().height - target_position.y;
2948 if available_below > 3. * line_height {
2949 y_is_flipped = false;
2950 max_height = min_height;
2951 } else if available_above > 3. * line_height {
2952 y_is_flipped = true;
2953 max_height = min_height;
2954 } else if available_above > available_below {
2955 y_is_flipped = true;
2956 max_height = available_above;
2957 } else {
2958 y_is_flipped = false;
2959 max_height = available_below;
2960 }
2961 }
2962
2963 let max_height_in_lines = ((max_height - POPOVER_Y_PADDING) / line_height).floor() as u32;
2964
2965 let Some(mut menu) = self.editor.update(cx, |editor, cx| {
2966 editor.render_context_menu(&self.style, max_height_in_lines, cx)
2967 }) else {
2968 return;
2969 };
2970
2971 let menu_size = menu.layout_as_root(AvailableSpace::min_size(), cx);
2972 let menu_position = gpui::Point {
2973 x: if target_position.x + menu_size.width > cx.viewport_size().width {
2974 // Snap the right edge of the list to the right edge of the window if its horizontal bounds
2975 // overflow.
2976 (cx.viewport_size().width - menu_size.width).max(Pixels::ZERO)
2977 } else {
2978 target_position.x
2979 },
2980 y: if y_is_flipped {
2981 bottom_y_when_flipped - menu_size.height
2982 } else {
2983 target_position.y
2984 },
2985 };
2986
2987 cx.defer_draw(menu, menu_position, 1);
2988 }
2989
2990 #[allow(clippy::too_many_arguments)]
2991 fn layout_inline_completion_popover(
2992 &self,
2993 text_bounds: &Bounds<Pixels>,
2994 editor_snapshot: &EditorSnapshot,
2995 visible_row_range: Range<DisplayRow>,
2996 scroll_top: f32,
2997 scroll_bottom: f32,
2998 line_layouts: &[LineWithInvisibles],
2999 line_height: Pixels,
3000 scroll_pixel_position: gpui::Point<Pixels>,
3001 editor_width: Pixels,
3002 style: &EditorStyle,
3003 cx: &mut WindowContext,
3004 ) -> Option<AnyElement> {
3005 const PADDING_X: Pixels = Pixels(24.);
3006 const PADDING_Y: Pixels = Pixels(2.);
3007
3008 let active_inline_completion = self.editor.read(cx).active_inline_completion.as_ref()?;
3009
3010 match &active_inline_completion.completion {
3011 InlineCompletion::Move(target_position) => {
3012 let tab_kbd = h_flex()
3013 .px_0p5()
3014 .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
3015 .text_size(TextSize::XSmall.rems(cx))
3016 .text_color(cx.theme().colors().text.opacity(0.8))
3017 .child("tab");
3018
3019 let icon_container = div().mt(px(2.5)); // For optical alignment
3020
3021 let container_element = h_flex()
3022 .items_center()
3023 .py_0p5()
3024 .px_1()
3025 .gap_1()
3026 .bg(cx.theme().colors().editor_subheader_background)
3027 .border_1()
3028 .border_color(cx.theme().colors().text_accent.opacity(0.2))
3029 .rounded_md()
3030 .shadow_sm();
3031
3032 let target_display_point = target_position.to_display_point(editor_snapshot);
3033 if target_display_point.row().as_f32() < scroll_top {
3034 let mut element = container_element
3035 .child(tab_kbd)
3036 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3037 .child(
3038 icon_container
3039 .child(Icon::new(IconName::ArrowUp).size(IconSize::Small)),
3040 )
3041 .into_any();
3042 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3043 let offset = point((text_bounds.size.width - size.width) / 2., PADDING_Y);
3044 element.prepaint_at(text_bounds.origin + offset, cx);
3045 Some(element)
3046 } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
3047 let mut element = container_element
3048 .child(tab_kbd)
3049 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3050 .child(
3051 icon_container
3052 .child(Icon::new(IconName::ArrowDown).size(IconSize::Small)),
3053 )
3054 .into_any();
3055 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3056 let offset = point(
3057 (text_bounds.size.width - size.width) / 2.,
3058 text_bounds.size.height - size.height - PADDING_Y,
3059 );
3060 element.prepaint_at(text_bounds.origin + offset, cx);
3061 Some(element)
3062 } else {
3063 let mut element = container_element
3064 .child(tab_kbd)
3065 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3066 .into_any();
3067
3068 let target_line_end = DisplayPoint::new(
3069 target_display_point.row(),
3070 editor_snapshot.line_len(target_display_point.row()),
3071 );
3072 let origin = self.editor.update(cx, |editor, cx| {
3073 editor.display_to_pixel_point(target_line_end, editor_snapshot, cx)
3074 })?;
3075 element.prepaint_as_root(
3076 text_bounds.origin + origin + point(PADDING_X, px(0.)),
3077 AvailableSpace::min_size(),
3078 cx,
3079 );
3080 Some(element)
3081 }
3082 }
3083 InlineCompletion::Edit(edits) => {
3084 if self.editor.read(cx).has_active_completions_menu() {
3085 return None;
3086 }
3087
3088 let edit_start = edits
3089 .first()
3090 .unwrap()
3091 .0
3092 .start
3093 .to_display_point(editor_snapshot);
3094 let edit_end = edits
3095 .last()
3096 .unwrap()
3097 .0
3098 .end
3099 .to_display_point(editor_snapshot);
3100
3101 let is_visible = visible_row_range.contains(&edit_start.row())
3102 || visible_row_range.contains(&edit_end.row());
3103 if !is_visible {
3104 return None;
3105 }
3106
3107 if all_edits_insertions_or_deletions(edits, &editor_snapshot.buffer_snapshot) {
3108 return None;
3109 }
3110
3111 let crate::InlineCompletionText::Edit { text, highlights } =
3112 crate::inline_completion_edit_text(editor_snapshot, edits, cx)
3113 else {
3114 return None;
3115 };
3116 let line_count = text.lines().count() + 1;
3117
3118 let longest_row =
3119 editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
3120 let longest_line_width = if visible_row_range.contains(&longest_row) {
3121 line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
3122 } else {
3123 layout_line(
3124 longest_row,
3125 editor_snapshot,
3126 style,
3127 editor_width,
3128 |_| false,
3129 cx,
3130 )
3131 .width
3132 };
3133
3134 let styled_text =
3135 gpui::StyledText::new(text.clone()).with_highlights(&style.text, highlights);
3136
3137 let mut element = div()
3138 .bg(cx.theme().colors().editor_background)
3139 .border_1()
3140 .border_color(cx.theme().colors().border)
3141 .rounded_md()
3142 .px_1()
3143 .child(styled_text)
3144 .into_any();
3145
3146 let element_bounds = element.layout_as_root(AvailableSpace::min_size(), cx);
3147 let is_fully_visible =
3148 editor_width >= longest_line_width + PADDING_X + element_bounds.width;
3149
3150 let origin = if is_fully_visible {
3151 text_bounds.origin
3152 + point(
3153 longest_line_width + PADDING_X - scroll_pixel_position.x,
3154 edit_start.row().as_f32() * line_height - scroll_pixel_position.y,
3155 )
3156 } else {
3157 let target_above =
3158 DisplayRow(edit_start.row().0.saturating_sub(line_count as u32));
3159 let row_target = if visible_row_range
3160 .contains(&DisplayRow(target_above.0.saturating_sub(1)))
3161 {
3162 target_above
3163 } else {
3164 DisplayRow(edit_end.row().0 + 1)
3165 };
3166
3167 text_bounds.origin
3168 + point(
3169 -scroll_pixel_position.x,
3170 row_target.as_f32() * line_height - scroll_pixel_position.y,
3171 )
3172 };
3173
3174 element.prepaint_as_root(origin, element_bounds.into(), cx);
3175 Some(element)
3176 }
3177 }
3178 }
3179
3180 fn layout_mouse_context_menu(
3181 &self,
3182 editor_snapshot: &EditorSnapshot,
3183 visible_range: Range<DisplayRow>,
3184 content_origin: gpui::Point<Pixels>,
3185 cx: &mut WindowContext,
3186 ) -> Option<AnyElement> {
3187 let position = self.editor.update(cx, |editor, cx| {
3188 let visible_start_point = editor.display_to_pixel_point(
3189 DisplayPoint::new(visible_range.start, 0),
3190 editor_snapshot,
3191 cx,
3192 )?;
3193 let visible_end_point = editor.display_to_pixel_point(
3194 DisplayPoint::new(visible_range.end, 0),
3195 editor_snapshot,
3196 cx,
3197 )?;
3198
3199 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3200 let (source_display_point, position) = match mouse_context_menu.position {
3201 MenuPosition::PinnedToScreen(point) => (None, point),
3202 MenuPosition::PinnedToEditor { source, offset } => {
3203 let source_display_point = source.to_display_point(editor_snapshot);
3204 let source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
3205 let position = content_origin + source_point + offset;
3206 (Some(source_display_point), position)
3207 }
3208 };
3209
3210 let source_included = source_display_point.map_or(true, |source_display_point| {
3211 visible_range
3212 .to_inclusive()
3213 .contains(&source_display_point.row())
3214 });
3215 let position_included =
3216 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
3217 if !source_included && !position_included {
3218 None
3219 } else {
3220 Some(position)
3221 }
3222 })?;
3223
3224 let mut element = self.editor.update(cx, |editor, _| {
3225 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3226 let context_menu = mouse_context_menu.context_menu.clone();
3227
3228 Some(
3229 deferred(
3230 anchored()
3231 .position(position)
3232 .child(context_menu)
3233 .anchor(Corner::TopLeft)
3234 .snap_to_window_with_margin(px(8.)),
3235 )
3236 .with_priority(1)
3237 .into_any(),
3238 )
3239 })?;
3240
3241 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
3242 Some(element)
3243 }
3244
3245 #[allow(clippy::too_many_arguments)]
3246 fn layout_hover_popovers(
3247 &self,
3248 snapshot: &EditorSnapshot,
3249 hitbox: &Hitbox,
3250 text_hitbox: &Hitbox,
3251 visible_display_row_range: Range<DisplayRow>,
3252 content_origin: gpui::Point<Pixels>,
3253 scroll_pixel_position: gpui::Point<Pixels>,
3254 line_layouts: &[LineWithInvisibles],
3255 line_height: Pixels,
3256 em_width: Pixels,
3257 cx: &mut WindowContext,
3258 ) {
3259 struct MeasuredHoverPopover {
3260 element: AnyElement,
3261 size: Size<Pixels>,
3262 horizontal_offset: Pixels,
3263 }
3264
3265 let max_size = size(
3266 (120. * em_width) // Default size
3267 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3268 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3269 (16. * line_height) // Default size
3270 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3271 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3272 );
3273
3274 let hover_popovers = self.editor.update(cx, |editor, cx| {
3275 editor
3276 .hover_state
3277 .render(snapshot, visible_display_row_range.clone(), max_size, cx)
3278 });
3279 let Some((position, hover_popovers)) = hover_popovers else {
3280 return;
3281 };
3282
3283 // This is safe because we check on layout whether the required row is available
3284 let hovered_row_layout =
3285 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
3286
3287 // Compute Hovered Point
3288 let x =
3289 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
3290 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
3291 let hovered_point = content_origin + point(x, y);
3292
3293 let mut overall_height = Pixels::ZERO;
3294 let mut measured_hover_popovers = Vec::new();
3295 for mut hover_popover in hover_popovers {
3296 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
3297 let horizontal_offset =
3298 (text_hitbox.top_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
3299
3300 overall_height += HOVER_POPOVER_GAP + size.height;
3301
3302 measured_hover_popovers.push(MeasuredHoverPopover {
3303 element: hover_popover,
3304 size,
3305 horizontal_offset,
3306 });
3307 }
3308 overall_height += HOVER_POPOVER_GAP;
3309
3310 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3311 let mut occlusion = div()
3312 .size_full()
3313 .occlude()
3314 .on_mouse_move(|_, cx| cx.stop_propagation())
3315 .into_any_element();
3316 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
3317 cx.defer_draw(occlusion, origin, 2);
3318 }
3319
3320 if hovered_point.y > overall_height {
3321 // There is enough space above. Render popovers above the hovered point
3322 let mut current_y = hovered_point.y;
3323 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3324 let size = popover.size;
3325 let popover_origin = point(
3326 hovered_point.x + popover.horizontal_offset,
3327 current_y - size.height,
3328 );
3329
3330 cx.defer_draw(popover.element, popover_origin, 2);
3331 if position != itertools::Position::Last {
3332 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
3333 draw_occluder(size.width, origin, cx);
3334 }
3335
3336 current_y = popover_origin.y - HOVER_POPOVER_GAP;
3337 }
3338 } else {
3339 // There is not enough space above. Render popovers below the hovered point
3340 let mut current_y = hovered_point.y + line_height;
3341 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3342 let size = popover.size;
3343 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
3344
3345 cx.defer_draw(popover.element, popover_origin, 2);
3346 if position != itertools::Position::Last {
3347 let origin = point(popover_origin.x, popover_origin.y + size.height);
3348 draw_occluder(size.width, origin, cx);
3349 }
3350
3351 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
3352 }
3353 }
3354 }
3355
3356 #[allow(clippy::too_many_arguments)]
3357 fn layout_signature_help(
3358 &self,
3359 hitbox: &Hitbox,
3360 content_origin: gpui::Point<Pixels>,
3361 scroll_pixel_position: gpui::Point<Pixels>,
3362 newest_selection_head: Option<DisplayPoint>,
3363 start_row: DisplayRow,
3364 line_layouts: &[LineWithInvisibles],
3365 line_height: Pixels,
3366 em_width: Pixels,
3367 cx: &mut WindowContext,
3368 ) {
3369 if !self.editor.focus_handle(cx).is_focused(cx) {
3370 return;
3371 }
3372 let Some(newest_selection_head) = newest_selection_head else {
3373 return;
3374 };
3375 let selection_row = newest_selection_head.row();
3376 if selection_row < start_row {
3377 return;
3378 }
3379 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
3380 else {
3381 return;
3382 };
3383
3384 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
3385 - scroll_pixel_position.x
3386 + content_origin.x;
3387 let start_y =
3388 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
3389
3390 let max_size = size(
3391 (120. * em_width) // Default size
3392 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3393 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3394 (16. * line_height) // Default size
3395 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3396 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3397 );
3398
3399 let maybe_element = self.editor.update(cx, |editor, cx| {
3400 if let Some(popover) = editor.signature_help_state.popover_mut() {
3401 let element = popover.render(
3402 &self.style,
3403 max_size,
3404 editor.workspace.as_ref().map(|(w, _)| w.clone()),
3405 cx,
3406 );
3407 Some(element)
3408 } else {
3409 None
3410 }
3411 });
3412 if let Some(mut element) = maybe_element {
3413 let window_size = cx.viewport_size();
3414 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
3415 let mut point = point(start_x, start_y - size.height);
3416
3417 // Adjusting to ensure the popover does not overflow in the X-axis direction.
3418 if point.x + size.width >= window_size.width {
3419 point.x = window_size.width - size.width;
3420 }
3421
3422 cx.defer_draw(element, point, 1)
3423 }
3424 }
3425
3426 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
3427 cx.paint_layer(layout.hitbox.bounds, |cx| {
3428 let scroll_top = layout.position_map.snapshot.scroll_position().y;
3429 let gutter_bg = cx.theme().colors().editor_gutter_background;
3430 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
3431 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
3432
3433 if let EditorMode::Full = layout.mode {
3434 let mut active_rows = layout.active_rows.iter().peekable();
3435 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
3436 let mut end_row = start_row.0;
3437 while active_rows
3438 .peek()
3439 .map_or(false, |(active_row, has_selection)| {
3440 active_row.0 == end_row + 1
3441 && *has_selection == contains_non_empty_selection
3442 })
3443 {
3444 active_rows.next().unwrap();
3445 end_row += 1;
3446 }
3447
3448 if !contains_non_empty_selection {
3449 let highlight_h_range =
3450 match layout.position_map.snapshot.current_line_highlight {
3451 CurrentLineHighlight::Gutter => Some(Range {
3452 start: layout.hitbox.left(),
3453 end: layout.gutter_hitbox.right(),
3454 }),
3455 CurrentLineHighlight::Line => Some(Range {
3456 start: layout.text_hitbox.bounds.left(),
3457 end: layout.text_hitbox.bounds.right(),
3458 }),
3459 CurrentLineHighlight::All => Some(Range {
3460 start: layout.hitbox.left(),
3461 end: layout.hitbox.right(),
3462 }),
3463 CurrentLineHighlight::None => None,
3464 };
3465 if let Some(range) = highlight_h_range {
3466 let active_line_bg = cx.theme().colors().editor_active_line_background;
3467 let bounds = Bounds {
3468 origin: point(
3469 range.start,
3470 layout.hitbox.origin.y
3471 + (start_row.as_f32() - scroll_top)
3472 * layout.position_map.line_height,
3473 ),
3474 size: size(
3475 range.end - range.start,
3476 layout.position_map.line_height
3477 * (end_row - start_row.0 + 1) as f32,
3478 ),
3479 };
3480 cx.paint_quad(fill(bounds, active_line_bg));
3481 }
3482 }
3483 }
3484
3485 let mut paint_highlight =
3486 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
3487 let origin = point(
3488 layout.hitbox.origin.x,
3489 layout.hitbox.origin.y
3490 + (highlight_row_start.as_f32() - scroll_top)
3491 * layout.position_map.line_height,
3492 );
3493 let size = size(
3494 layout.hitbox.size.width,
3495 layout.position_map.line_height
3496 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
3497 );
3498 cx.paint_quad(fill(Bounds { origin, size }, color));
3499 };
3500
3501 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
3502 for (&new_row, &new_color) in &layout.highlighted_rows {
3503 match &mut current_paint {
3504 Some((current_color, current_range)) => {
3505 let current_color = *current_color;
3506 let new_range_started = current_color != new_color
3507 || current_range.end.next_row() != new_row;
3508 if new_range_started {
3509 paint_highlight(
3510 current_range.start,
3511 current_range.end,
3512 current_color,
3513 );
3514 current_paint = Some((new_color, new_row..new_row));
3515 continue;
3516 } else {
3517 current_range.end = current_range.end.next_row();
3518 }
3519 }
3520 None => current_paint = Some((new_color, new_row..new_row)),
3521 };
3522 }
3523 if let Some((color, range)) = current_paint {
3524 paint_highlight(range.start, range.end, color);
3525 }
3526
3527 let scroll_left =
3528 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
3529
3530 for (wrap_position, active) in layout.wrap_guides.iter() {
3531 let x = (layout.text_hitbox.origin.x
3532 + *wrap_position
3533 + layout.position_map.em_width / 2.)
3534 - scroll_left;
3535
3536 let show_scrollbars = {
3537 let (scrollbar_x, scrollbar_y) = &layout.scrollbars_layout.as_xy();
3538
3539 scrollbar_x.as_ref().map_or(false, |sx| sx.visible)
3540 || scrollbar_y.as_ref().map_or(false, |sy| sy.visible)
3541 };
3542
3543 if x < layout.text_hitbox.origin.x
3544 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
3545 {
3546 continue;
3547 }
3548
3549 let color = if *active {
3550 cx.theme().colors().editor_active_wrap_guide
3551 } else {
3552 cx.theme().colors().editor_wrap_guide
3553 };
3554 cx.paint_quad(fill(
3555 Bounds {
3556 origin: point(x, layout.text_hitbox.origin.y),
3557 size: size(px(1.), layout.text_hitbox.size.height),
3558 },
3559 color,
3560 ));
3561 }
3562 }
3563 })
3564 }
3565
3566 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3567 let Some(indent_guides) = &layout.indent_guides else {
3568 return;
3569 };
3570
3571 let faded_color = |color: Hsla, alpha: f32| {
3572 let mut faded = color;
3573 faded.a = alpha;
3574 faded
3575 };
3576
3577 for indent_guide in indent_guides {
3578 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3579 let settings = indent_guide.settings;
3580
3581 // TODO fixed for now, expose them through themes later
3582 const INDENT_AWARE_ALPHA: f32 = 0.2;
3583 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3584 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3585 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3586
3587 let line_color = match (settings.coloring, indent_guide.active) {
3588 (IndentGuideColoring::Disabled, _) => None,
3589 (IndentGuideColoring::Fixed, false) => {
3590 Some(cx.theme().colors().editor_indent_guide)
3591 }
3592 (IndentGuideColoring::Fixed, true) => {
3593 Some(cx.theme().colors().editor_indent_guide_active)
3594 }
3595 (IndentGuideColoring::IndentAware, false) => {
3596 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3597 }
3598 (IndentGuideColoring::IndentAware, true) => {
3599 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3600 }
3601 };
3602
3603 let background_color = match (settings.background_coloring, indent_guide.active) {
3604 (IndentGuideBackgroundColoring::Disabled, _) => None,
3605 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3606 indent_accent_colors,
3607 INDENT_AWARE_BACKGROUND_ALPHA,
3608 )),
3609 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3610 indent_accent_colors,
3611 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3612 )),
3613 };
3614
3615 let requested_line_width = if indent_guide.active {
3616 settings.active_line_width
3617 } else {
3618 settings.line_width
3619 }
3620 .clamp(1, 10);
3621 let mut line_indicator_width = 0.;
3622 if let Some(color) = line_color {
3623 cx.paint_quad(fill(
3624 Bounds {
3625 origin: indent_guide.origin,
3626 size: size(px(requested_line_width as f32), indent_guide.length),
3627 },
3628 color,
3629 ));
3630 line_indicator_width = requested_line_width as f32;
3631 }
3632
3633 if let Some(color) = background_color {
3634 let width = indent_guide.single_indent_width - px(line_indicator_width);
3635 cx.paint_quad(fill(
3636 Bounds {
3637 origin: point(
3638 indent_guide.origin.x + px(line_indicator_width),
3639 indent_guide.origin.y,
3640 ),
3641 size: size(width, indent_guide.length),
3642 },
3643 color,
3644 ));
3645 }
3646 }
3647 }
3648
3649 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3650 let line_height = layout.position_map.line_height;
3651 let scroll_position = layout.position_map.snapshot.scroll_position();
3652 let scroll_top = scroll_position.y * line_height;
3653
3654 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3655
3656 for (ix, line) in layout.line_numbers.iter().enumerate() {
3657 if let Some(line) = line {
3658 let line_origin = layout.gutter_hitbox.origin
3659 + point(
3660 layout.gutter_hitbox.size.width
3661 - line.width
3662 - layout.gutter_dimensions.right_padding,
3663 ix as f32 * line_height - (scroll_top % line_height),
3664 );
3665
3666 line.paint(line_origin, line_height, cx).log_err();
3667 }
3668 }
3669 }
3670
3671 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
3672 if layout.display_hunks.is_empty() {
3673 return;
3674 }
3675
3676 let line_height = layout.position_map.line_height;
3677 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3678 for (hunk, hitbox) in &layout.display_hunks {
3679 let hunk_to_paint = match hunk {
3680 DisplayDiffHunk::Folded { .. } => {
3681 let hunk_bounds = Self::diff_hunk_bounds(
3682 &layout.position_map.snapshot,
3683 line_height,
3684 layout.gutter_hitbox.bounds,
3685 hunk,
3686 );
3687 Some((
3688 hunk_bounds,
3689 cx.theme().status().modified,
3690 Corners::all(px(0.)),
3691 ))
3692 }
3693 DisplayDiffHunk::Unfolded { status, .. } => {
3694 hitbox.as_ref().map(|hunk_hitbox| match status {
3695 DiffHunkStatus::Added => (
3696 hunk_hitbox.bounds,
3697 cx.theme().status().created,
3698 Corners::all(px(0.)),
3699 ),
3700 DiffHunkStatus::Modified => (
3701 hunk_hitbox.bounds,
3702 cx.theme().status().modified,
3703 Corners::all(px(0.)),
3704 ),
3705 DiffHunkStatus::Removed => (
3706 Bounds::new(
3707 point(
3708 hunk_hitbox.origin.x - hunk_hitbox.size.width,
3709 hunk_hitbox.origin.y,
3710 ),
3711 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
3712 ),
3713 cx.theme().status().deleted,
3714 Corners::all(1. * line_height),
3715 ),
3716 })
3717 }
3718 };
3719
3720 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
3721 cx.paint_quad(quad(
3722 hunk_bounds,
3723 corner_radii,
3724 background_color,
3725 Edges::default(),
3726 transparent_black(),
3727 ));
3728 }
3729 }
3730 });
3731 }
3732
3733 pub(super) fn diff_hunk_bounds(
3734 snapshot: &EditorSnapshot,
3735 line_height: Pixels,
3736 gutter_bounds: Bounds<Pixels>,
3737 hunk: &DisplayDiffHunk,
3738 ) -> Bounds<Pixels> {
3739 let scroll_position = snapshot.scroll_position();
3740 let scroll_top = scroll_position.y * line_height;
3741
3742 match hunk {
3743 DisplayDiffHunk::Folded { display_row, .. } => {
3744 let start_y = display_row.as_f32() * line_height - scroll_top;
3745 let end_y = start_y + line_height;
3746
3747 let width = Self::diff_hunk_strip_width(line_height);
3748 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3749 let highlight_size = size(width, end_y - start_y);
3750 Bounds::new(highlight_origin, highlight_size)
3751 }
3752 DisplayDiffHunk::Unfolded {
3753 display_row_range,
3754 status,
3755 ..
3756 } => match status {
3757 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
3758 let start_row = display_row_range.start;
3759 let end_row = display_row_range.end;
3760 // If we're in a multibuffer, row range span might include an
3761 // excerpt header, so if we were to draw the marker straight away,
3762 // the hunk might include the rows of that header.
3763 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
3764 // Instead, we simply check whether the range we're dealing with includes
3765 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
3766 let end_row_in_current_excerpt = snapshot
3767 .blocks_in_range(start_row..end_row)
3768 .find_map(|(start_row, block)| {
3769 if matches!(block, Block::ExcerptBoundary { .. }) {
3770 Some(start_row)
3771 } else {
3772 None
3773 }
3774 })
3775 .unwrap_or(end_row);
3776
3777 let start_y = start_row.as_f32() * line_height - scroll_top;
3778 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
3779
3780 let width = Self::diff_hunk_strip_width(line_height);
3781 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3782 let highlight_size = size(width, end_y - start_y);
3783 Bounds::new(highlight_origin, highlight_size)
3784 }
3785 DiffHunkStatus::Removed => {
3786 let row = display_row_range.start;
3787
3788 let offset = line_height / 2.;
3789 let start_y = row.as_f32() * line_height - offset - scroll_top;
3790 let end_y = start_y + line_height;
3791
3792 let width = (0.35 * line_height).floor();
3793 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3794 let highlight_size = size(width, end_y - start_y);
3795 Bounds::new(highlight_origin, highlight_size)
3796 }
3797 },
3798 }
3799 }
3800
3801 /// Returns the width of the diff strip that will be displayed in the gutter.
3802 pub(super) fn diff_hunk_strip_width(line_height: Pixels) -> Pixels {
3803 // We floor the value to prevent pixel rounding.
3804 (0.275 * line_height).floor()
3805 }
3806
3807 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3808 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3809 cx.with_element_namespace("crease_toggles", |cx| {
3810 for crease_toggle in layout.crease_toggles.iter_mut().flatten() {
3811 crease_toggle.paint(cx);
3812 }
3813 });
3814
3815 for test_indicator in layout.test_indicators.iter_mut() {
3816 test_indicator.paint(cx);
3817 }
3818
3819 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
3820 indicator.paint(cx);
3821 }
3822 });
3823 }
3824
3825 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3826 for (_, hunk_hitbox) in &layout.display_hunks {
3827 if let Some(hunk_hitbox) = hunk_hitbox {
3828 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
3829 }
3830 }
3831
3832 let show_git_gutter = layout
3833 .position_map
3834 .snapshot
3835 .show_git_diff_gutter
3836 .unwrap_or_else(|| {
3837 matches!(
3838 ProjectSettings::get_global(cx).git.git_gutter,
3839 Some(GitGutterSetting::TrackedFiles)
3840 )
3841 });
3842 if show_git_gutter {
3843 Self::paint_diff_hunks(layout, cx)
3844 }
3845
3846 let highlight_width = 0.275 * layout.position_map.line_height;
3847 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
3848 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3849 for (range, color) in &layout.highlighted_gutter_ranges {
3850 let start_row = if range.start.row() < layout.visible_display_row_range.start {
3851 layout.visible_display_row_range.start - DisplayRow(1)
3852 } else {
3853 range.start.row()
3854 };
3855 let end_row = if range.end.row() > layout.visible_display_row_range.end {
3856 layout.visible_display_row_range.end + DisplayRow(1)
3857 } else {
3858 range.end.row()
3859 };
3860
3861 let start_y = layout.gutter_hitbox.top()
3862 + start_row.0 as f32 * layout.position_map.line_height
3863 - layout.position_map.scroll_pixel_position.y;
3864 let end_y = layout.gutter_hitbox.top()
3865 + (end_row.0 + 1) as f32 * layout.position_map.line_height
3866 - layout.position_map.scroll_pixel_position.y;
3867 let bounds = Bounds::from_corners(
3868 point(layout.gutter_hitbox.left(), start_y),
3869 point(layout.gutter_hitbox.left() + highlight_width, end_y),
3870 );
3871 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
3872 }
3873 });
3874 }
3875
3876 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3877 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
3878 return;
3879 };
3880
3881 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3882 for mut blame_element in blamed_display_rows.into_iter() {
3883 blame_element.paint(cx);
3884 }
3885 })
3886 }
3887
3888 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3889 cx.with_content_mask(
3890 Some(ContentMask {
3891 bounds: layout.text_hitbox.bounds,
3892 }),
3893 |cx| {
3894 let cursor_style = if self
3895 .editor
3896 .read(cx)
3897 .hovered_link_state
3898 .as_ref()
3899 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
3900 {
3901 CursorStyle::PointingHand
3902 } else {
3903 CursorStyle::IBeam
3904 };
3905 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
3906
3907 let invisible_display_ranges = self.paint_highlights(layout, cx);
3908 self.paint_lines(&invisible_display_ranges, layout, cx);
3909 self.paint_redactions(layout, cx);
3910 self.paint_cursors(layout, cx);
3911 self.paint_inline_blame(layout, cx);
3912 cx.with_element_namespace("crease_trailers", |cx| {
3913 for trailer in layout.crease_trailers.iter_mut().flatten() {
3914 trailer.element.paint(cx);
3915 }
3916 });
3917 },
3918 )
3919 }
3920
3921 fn paint_highlights(
3922 &mut self,
3923 layout: &mut EditorLayout,
3924 cx: &mut WindowContext,
3925 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
3926 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3927 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
3928 let line_end_overshoot = 0.15 * layout.position_map.line_height;
3929 for (range, color) in &layout.highlighted_ranges {
3930 self.paint_highlighted_range(
3931 range.clone(),
3932 *color,
3933 Pixels::ZERO,
3934 line_end_overshoot,
3935 layout,
3936 cx,
3937 );
3938 }
3939
3940 let corner_radius = 0.15 * layout.position_map.line_height;
3941
3942 for (player_color, selections) in &layout.selections {
3943 for selection in selections.iter() {
3944 self.paint_highlighted_range(
3945 selection.range.clone(),
3946 player_color.selection,
3947 corner_radius,
3948 corner_radius * 2.,
3949 layout,
3950 cx,
3951 );
3952
3953 if selection.is_local && !selection.range.is_empty() {
3954 invisible_display_ranges.push(selection.range.clone());
3955 }
3956 }
3957 }
3958 invisible_display_ranges
3959 })
3960 }
3961
3962 fn paint_lines(
3963 &mut self,
3964 invisible_display_ranges: &[Range<DisplayPoint>],
3965 layout: &mut EditorLayout,
3966 cx: &mut WindowContext,
3967 ) {
3968 let whitespace_setting = self
3969 .editor
3970 .read(cx)
3971 .buffer
3972 .read(cx)
3973 .settings_at(0, cx)
3974 .show_whitespaces;
3975
3976 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
3977 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
3978 line_with_invisibles.draw(
3979 layout,
3980 row,
3981 layout.content_origin,
3982 whitespace_setting,
3983 invisible_display_ranges,
3984 cx,
3985 )
3986 }
3987
3988 for line_element in &mut layout.line_elements {
3989 line_element.paint(cx);
3990 }
3991 }
3992
3993 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3994 if layout.redacted_ranges.is_empty() {
3995 return;
3996 }
3997
3998 let line_end_overshoot = layout.line_end_overshoot();
3999
4000 // A softer than perfect black
4001 let redaction_color = gpui::rgb(0x0e1111);
4002
4003 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4004 for range in layout.redacted_ranges.iter() {
4005 self.paint_highlighted_range(
4006 range.clone(),
4007 redaction_color.into(),
4008 Pixels::ZERO,
4009 line_end_overshoot,
4010 layout,
4011 cx,
4012 );
4013 }
4014 });
4015 }
4016
4017 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4018 for cursor in &mut layout.visible_cursors {
4019 cursor.paint(layout.content_origin, cx);
4020 }
4021 }
4022
4023 fn paint_scrollbars(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4024 let (scrollbar_x, scrollbar_y) = layout.scrollbars_layout.as_xy();
4025
4026 if let Some(scrollbar_layout) = scrollbar_x {
4027 let hitbox = scrollbar_layout.hitbox.clone();
4028 let text_unit_size = scrollbar_layout.text_unit_size;
4029 let visible_range = scrollbar_layout.visible_range.clone();
4030 let thumb_bounds = scrollbar_layout.thumb_bounds();
4031
4032 if scrollbar_layout.visible {
4033 cx.paint_layer(hitbox.bounds, |cx| {
4034 cx.paint_quad(quad(
4035 hitbox.bounds,
4036 Corners::default(),
4037 cx.theme().colors().scrollbar_track_background,
4038 Edges {
4039 top: Pixels::ZERO,
4040 right: Pixels::ZERO,
4041 bottom: Pixels::ZERO,
4042 left: Pixels::ZERO,
4043 },
4044 cx.theme().colors().scrollbar_track_border,
4045 ));
4046
4047 cx.paint_quad(quad(
4048 thumb_bounds,
4049 Corners::default(),
4050 cx.theme().colors().scrollbar_thumb_background,
4051 Edges {
4052 top: Pixels::ZERO,
4053 right: Pixels::ZERO,
4054 bottom: Pixels::ZERO,
4055 left: ScrollbarLayout::BORDER_WIDTH,
4056 },
4057 cx.theme().colors().scrollbar_thumb_border,
4058 ));
4059 })
4060 }
4061
4062 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4063
4064 cx.on_mouse_event({
4065 let editor = self.editor.clone();
4066
4067 // there may be a way to avoid this clone
4068 let hitbox = hitbox.clone();
4069
4070 let mut mouse_position = cx.mouse_position();
4071 move |event: &MouseMoveEvent, phase, cx| {
4072 if phase == DispatchPhase::Capture {
4073 return;
4074 }
4075
4076 editor.update(cx, |editor, cx| {
4077 if event.pressed_button == Some(MouseButton::Left)
4078 && editor
4079 .scroll_manager
4080 .is_dragging_scrollbar(Axis::Horizontal)
4081 {
4082 let x = mouse_position.x;
4083 let new_x = event.position.x;
4084 if (hitbox.left()..hitbox.right()).contains(&x) {
4085 let mut position = editor.scroll_position(cx);
4086
4087 position.x += (new_x - x) / text_unit_size;
4088 if position.x < 0.0 {
4089 position.x = 0.0;
4090 }
4091 editor.set_scroll_position(position, cx);
4092 }
4093
4094 cx.stop_propagation();
4095 } else {
4096 editor.scroll_manager.set_is_dragging_scrollbar(
4097 Axis::Horizontal,
4098 false,
4099 cx,
4100 );
4101
4102 if hitbox.is_hovered(cx) {
4103 editor.scroll_manager.show_scrollbar(cx);
4104 }
4105 }
4106 mouse_position = event.position;
4107 })
4108 }
4109 });
4110
4111 if self
4112 .editor
4113 .read(cx)
4114 .scroll_manager
4115 .is_dragging_scrollbar(Axis::Horizontal)
4116 {
4117 cx.on_mouse_event({
4118 let editor = self.editor.clone();
4119 move |_: &MouseUpEvent, phase, cx| {
4120 if phase == DispatchPhase::Capture {
4121 return;
4122 }
4123
4124 editor.update(cx, |editor, cx| {
4125 editor.scroll_manager.set_is_dragging_scrollbar(
4126 Axis::Horizontal,
4127 false,
4128 cx,
4129 );
4130 cx.stop_propagation();
4131 });
4132 }
4133 });
4134 } else {
4135 cx.on_mouse_event({
4136 let editor = self.editor.clone();
4137
4138 move |event: &MouseDownEvent, phase, cx| {
4139 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4140 return;
4141 }
4142
4143 editor.update(cx, |editor, cx| {
4144 editor.scroll_manager.set_is_dragging_scrollbar(
4145 Axis::Horizontal,
4146 true,
4147 cx,
4148 );
4149
4150 let x = event.position.x;
4151
4152 if x < thumb_bounds.left() || thumb_bounds.right() < x {
4153 let center_row =
4154 ((x - hitbox.left()) / text_unit_size).round() as u32;
4155 let top_row = center_row.saturating_sub(
4156 (visible_range.end - visible_range.start) as u32 / 2,
4157 );
4158
4159 let mut position = editor.scroll_position(cx);
4160 position.x = top_row as f32;
4161
4162 editor.set_scroll_position(position, cx);
4163 } else {
4164 editor.scroll_manager.show_scrollbar(cx);
4165 }
4166
4167 cx.stop_propagation();
4168 });
4169 }
4170 });
4171 }
4172 }
4173
4174 if let Some(scrollbar_layout) = scrollbar_y {
4175 let hitbox = scrollbar_layout.hitbox.clone();
4176 let text_unit_size = scrollbar_layout.text_unit_size;
4177 let visible_range = scrollbar_layout.visible_range.clone();
4178 let thumb_bounds = scrollbar_layout.thumb_bounds();
4179
4180 if scrollbar_layout.visible {
4181 cx.paint_layer(hitbox.bounds, |cx| {
4182 cx.paint_quad(quad(
4183 hitbox.bounds,
4184 Corners::default(),
4185 cx.theme().colors().scrollbar_track_background,
4186 Edges {
4187 top: Pixels::ZERO,
4188 right: Pixels::ZERO,
4189 bottom: Pixels::ZERO,
4190 left: ScrollbarLayout::BORDER_WIDTH,
4191 },
4192 cx.theme().colors().scrollbar_track_border,
4193 ));
4194
4195 let fast_markers =
4196 self.collect_fast_scrollbar_markers(layout, &scrollbar_layout, cx);
4197 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
4198 self.refresh_slow_scrollbar_markers(layout, &scrollbar_layout, cx);
4199
4200 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
4201 for marker in markers.iter().chain(&fast_markers) {
4202 let mut marker = marker.clone();
4203 marker.bounds.origin += hitbox.origin;
4204 cx.paint_quad(marker);
4205 }
4206
4207 cx.paint_quad(quad(
4208 thumb_bounds,
4209 Corners::default(),
4210 cx.theme().colors().scrollbar_thumb_background,
4211 Edges {
4212 top: Pixels::ZERO,
4213 right: Pixels::ZERO,
4214 bottom: Pixels::ZERO,
4215 left: ScrollbarLayout::BORDER_WIDTH,
4216 },
4217 cx.theme().colors().scrollbar_thumb_border,
4218 ));
4219 });
4220 }
4221
4222 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4223
4224 cx.on_mouse_event({
4225 let editor = self.editor.clone();
4226
4227 let hitbox = hitbox.clone();
4228
4229 let mut mouse_position = cx.mouse_position();
4230 move |event: &MouseMoveEvent, phase, cx| {
4231 if phase == DispatchPhase::Capture {
4232 return;
4233 }
4234
4235 editor.update(cx, |editor, cx| {
4236 if event.pressed_button == Some(MouseButton::Left)
4237 && editor.scroll_manager.is_dragging_scrollbar(Axis::Vertical)
4238 {
4239 let y = mouse_position.y;
4240 let new_y = event.position.y;
4241 if (hitbox.top()..hitbox.bottom()).contains(&y) {
4242 let mut position = editor.scroll_position(cx);
4243 position.y += (new_y - y) / text_unit_size;
4244 if position.y < 0.0 {
4245 position.y = 0.0;
4246 }
4247 editor.set_scroll_position(position, cx);
4248 }
4249 } else {
4250 editor.scroll_manager.set_is_dragging_scrollbar(
4251 Axis::Vertical,
4252 false,
4253 cx,
4254 );
4255
4256 if hitbox.is_hovered(cx) {
4257 editor.scroll_manager.show_scrollbar(cx);
4258 }
4259 }
4260 mouse_position = event.position;
4261 })
4262 }
4263 });
4264
4265 if self
4266 .editor
4267 .read(cx)
4268 .scroll_manager
4269 .is_dragging_scrollbar(Axis::Vertical)
4270 {
4271 cx.on_mouse_event({
4272 let editor = self.editor.clone();
4273 move |_: &MouseUpEvent, phase, cx| {
4274 if phase == DispatchPhase::Capture {
4275 return;
4276 }
4277
4278 editor.update(cx, |editor, cx| {
4279 editor.scroll_manager.set_is_dragging_scrollbar(
4280 Axis::Vertical,
4281 false,
4282 cx,
4283 );
4284 cx.stop_propagation();
4285 });
4286 }
4287 });
4288 } else {
4289 cx.on_mouse_event({
4290 let editor = self.editor.clone();
4291
4292 move |event: &MouseDownEvent, phase, cx| {
4293 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4294 return;
4295 }
4296
4297 editor.update(cx, |editor, cx| {
4298 editor.scroll_manager.set_is_dragging_scrollbar(
4299 Axis::Vertical,
4300 true,
4301 cx,
4302 );
4303
4304 let y = event.position.y;
4305 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
4306 let center_row =
4307 ((y - hitbox.top()) / text_unit_size).round() as u32;
4308 let top_row = center_row.saturating_sub(
4309 (visible_range.end - visible_range.start) as u32 / 2,
4310 );
4311 let mut position = editor.scroll_position(cx);
4312 position.y = top_row as f32;
4313 editor.set_scroll_position(position, cx);
4314 } else {
4315 editor.scroll_manager.show_scrollbar(cx);
4316 }
4317
4318 cx.stop_propagation();
4319 });
4320 }
4321 });
4322 }
4323 }
4324 }
4325
4326 fn collect_fast_scrollbar_markers(
4327 &self,
4328 layout: &EditorLayout,
4329 scrollbar_layout: &ScrollbarLayout,
4330 cx: &mut WindowContext,
4331 ) -> Vec<PaintQuad> {
4332 const LIMIT: usize = 100;
4333 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
4334 return vec![];
4335 }
4336 let cursor_ranges = layout
4337 .cursors
4338 .iter()
4339 .map(|(point, color)| ColoredRange {
4340 start: point.row(),
4341 end: point.row(),
4342 color: *color,
4343 })
4344 .collect_vec();
4345 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
4346 }
4347
4348 fn refresh_slow_scrollbar_markers(
4349 &self,
4350 layout: &EditorLayout,
4351 scrollbar_layout: &ScrollbarLayout,
4352 cx: &mut WindowContext,
4353 ) {
4354 self.editor.update(cx, |editor, cx| {
4355 if !editor.is_singleton(cx)
4356 || !editor
4357 .scrollbar_marker_state
4358 .should_refresh(scrollbar_layout.hitbox.size)
4359 {
4360 return;
4361 }
4362
4363 let scrollbar_layout = scrollbar_layout.clone();
4364 let background_highlights = editor.background_highlights.clone();
4365 let snapshot = layout.position_map.snapshot.clone();
4366 let theme = cx.theme().clone();
4367 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
4368
4369 editor.scrollbar_marker_state.dirty = false;
4370 editor.scrollbar_marker_state.pending_refresh =
4371 Some(cx.spawn(|editor, mut cx| async move {
4372 let scrollbar_size = scrollbar_layout.hitbox.size;
4373 let scrollbar_markers = cx
4374 .background_executor()
4375 .spawn(async move {
4376 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
4377 let mut marker_quads = Vec::new();
4378 if scrollbar_settings.git_diff {
4379 let marker_row_ranges = snapshot
4380 .diff_map
4381 .diff_hunks(&snapshot.buffer_snapshot)
4382 .map(|hunk| {
4383 let start_display_row =
4384 MultiBufferPoint::new(hunk.row_range.start.0, 0)
4385 .to_display_point(&snapshot.display_snapshot)
4386 .row();
4387 let mut end_display_row =
4388 MultiBufferPoint::new(hunk.row_range.end.0, 0)
4389 .to_display_point(&snapshot.display_snapshot)
4390 .row();
4391 if end_display_row != start_display_row {
4392 end_display_row.0 -= 1;
4393 }
4394 let color = match hunk_status(&hunk) {
4395 DiffHunkStatus::Added => theme.status().created,
4396 DiffHunkStatus::Modified => theme.status().modified,
4397 DiffHunkStatus::Removed => theme.status().deleted,
4398 };
4399 ColoredRange {
4400 start: start_display_row,
4401 end: end_display_row,
4402 color,
4403 }
4404 });
4405
4406 marker_quads.extend(
4407 scrollbar_layout
4408 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
4409 );
4410 }
4411
4412 for (background_highlight_id, (_, background_ranges)) in
4413 background_highlights.iter()
4414 {
4415 let is_search_highlights = *background_highlight_id
4416 == TypeId::of::<BufferSearchHighlights>();
4417 let is_symbol_occurrences = *background_highlight_id
4418 == TypeId::of::<DocumentHighlightRead>()
4419 || *background_highlight_id
4420 == TypeId::of::<DocumentHighlightWrite>();
4421 if (is_search_highlights && scrollbar_settings.search_results)
4422 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
4423 {
4424 let mut color = theme.status().info;
4425 if is_symbol_occurrences {
4426 color.fade_out(0.5);
4427 }
4428 let marker_row_ranges = background_ranges.iter().map(|range| {
4429 let display_start = range
4430 .start
4431 .to_display_point(&snapshot.display_snapshot);
4432 let display_end =
4433 range.end.to_display_point(&snapshot.display_snapshot);
4434 ColoredRange {
4435 start: display_start.row(),
4436 end: display_end.row(),
4437 color,
4438 }
4439 });
4440 marker_quads.extend(
4441 scrollbar_layout
4442 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
4443 );
4444 }
4445 }
4446
4447 if scrollbar_settings.diagnostics {
4448 let diagnostics = snapshot
4449 .buffer_snapshot
4450 .diagnostics_in_range::<_, Point>(
4451 Point::zero()..max_point,
4452 false,
4453 )
4454 // We want to sort by severity, in order to paint the most severe diagnostics last.
4455 .sorted_by_key(|diagnostic| {
4456 std::cmp::Reverse(diagnostic.diagnostic.severity)
4457 });
4458
4459 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
4460 let start_display = diagnostic
4461 .range
4462 .start
4463 .to_display_point(&snapshot.display_snapshot);
4464 let end_display = diagnostic
4465 .range
4466 .end
4467 .to_display_point(&snapshot.display_snapshot);
4468 let color = match diagnostic.diagnostic.severity {
4469 DiagnosticSeverity::ERROR => theme.status().error,
4470 DiagnosticSeverity::WARNING => theme.status().warning,
4471 DiagnosticSeverity::INFORMATION => theme.status().info,
4472 _ => theme.status().hint,
4473 };
4474 ColoredRange {
4475 start: start_display.row(),
4476 end: end_display.row(),
4477 color,
4478 }
4479 });
4480 marker_quads.extend(
4481 scrollbar_layout
4482 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
4483 );
4484 }
4485
4486 Arc::from(marker_quads)
4487 })
4488 .await;
4489
4490 editor.update(&mut cx, |editor, cx| {
4491 editor.scrollbar_marker_state.markers = scrollbar_markers;
4492 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
4493 editor.scrollbar_marker_state.pending_refresh = None;
4494 cx.notify();
4495 })?;
4496
4497 Ok(())
4498 }));
4499 });
4500 }
4501
4502 #[allow(clippy::too_many_arguments)]
4503 fn paint_highlighted_range(
4504 &self,
4505 range: Range<DisplayPoint>,
4506 color: Hsla,
4507 corner_radius: Pixels,
4508 line_end_overshoot: Pixels,
4509 layout: &EditorLayout,
4510 cx: &mut WindowContext,
4511 ) {
4512 let start_row = layout.visible_display_row_range.start;
4513 let end_row = layout.visible_display_row_range.end;
4514 if range.start != range.end {
4515 let row_range = if range.end.column() == 0 {
4516 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
4517 } else {
4518 cmp::max(range.start.row(), start_row)
4519 ..cmp::min(range.end.row().next_row(), end_row)
4520 };
4521
4522 let highlighted_range = HighlightedRange {
4523 color,
4524 line_height: layout.position_map.line_height,
4525 corner_radius,
4526 start_y: layout.content_origin.y
4527 + row_range.start.as_f32() * layout.position_map.line_height
4528 - layout.position_map.scroll_pixel_position.y,
4529 lines: row_range
4530 .iter_rows()
4531 .map(|row| {
4532 let line_layout =
4533 &layout.position_map.line_layouts[row.minus(start_row) as usize];
4534 HighlightedRangeLine {
4535 start_x: if row == range.start.row() {
4536 layout.content_origin.x
4537 + line_layout.x_for_index(range.start.column() as usize)
4538 - layout.position_map.scroll_pixel_position.x
4539 } else {
4540 layout.content_origin.x
4541 - layout.position_map.scroll_pixel_position.x
4542 },
4543 end_x: if row == range.end.row() {
4544 layout.content_origin.x
4545 + line_layout.x_for_index(range.end.column() as usize)
4546 - layout.position_map.scroll_pixel_position.x
4547 } else {
4548 layout.content_origin.x + line_layout.width + line_end_overshoot
4549 - layout.position_map.scroll_pixel_position.x
4550 },
4551 }
4552 })
4553 .collect(),
4554 };
4555
4556 highlighted_range.paint(layout.text_hitbox.bounds, cx);
4557 }
4558 }
4559
4560 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4561 if let Some(mut inline_blame) = layout.inline_blame.take() {
4562 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4563 inline_blame.paint(cx);
4564 })
4565 }
4566 }
4567
4568 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4569 for mut block in layout.blocks.drain(..) {
4570 block.element.paint(cx);
4571 }
4572 }
4573
4574 fn paint_inline_completion_popover(
4575 &mut self,
4576 layout: &mut EditorLayout,
4577 cx: &mut WindowContext,
4578 ) {
4579 if let Some(inline_completion_popover) = layout.inline_completion_popover.as_mut() {
4580 inline_completion_popover.paint(cx);
4581 }
4582 }
4583
4584 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4585 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
4586 mouse_context_menu.paint(cx);
4587 }
4588 }
4589
4590 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
4591 cx.on_mouse_event({
4592 let position_map = layout.position_map.clone();
4593 let editor = self.editor.clone();
4594 let hitbox = layout.hitbox.clone();
4595 let mut delta = ScrollDelta::default();
4596
4597 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
4598 // accidentally turn off their scrolling.
4599 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
4600
4601 move |event: &ScrollWheelEvent, phase, cx| {
4602 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
4603 delta = delta.coalesce(event.delta);
4604 editor.update(cx, |editor, cx| {
4605 let position_map: &PositionMap = &position_map;
4606
4607 let line_height = position_map.line_height;
4608 let max_glyph_width = position_map.em_width;
4609 let (delta, axis) = match delta {
4610 gpui::ScrollDelta::Pixels(mut pixels) => {
4611 //Trackpad
4612 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
4613 (pixels, axis)
4614 }
4615
4616 gpui::ScrollDelta::Lines(lines) => {
4617 //Not trackpad
4618 let pixels =
4619 point(lines.x * max_glyph_width, lines.y * line_height);
4620 (pixels, None)
4621 }
4622 };
4623
4624 let current_scroll_position = position_map.snapshot.scroll_position();
4625 let x = (current_scroll_position.x * max_glyph_width
4626 - (delta.x * scroll_sensitivity))
4627 / max_glyph_width;
4628 let y = (current_scroll_position.y * line_height
4629 - (delta.y * scroll_sensitivity))
4630 / line_height;
4631 let mut scroll_position =
4632 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
4633 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
4634 if forbid_vertical_scroll {
4635 scroll_position.y = current_scroll_position.y;
4636 }
4637
4638 if scroll_position != current_scroll_position {
4639 editor.scroll(scroll_position, axis, cx);
4640 cx.stop_propagation();
4641 } else if y < 0. {
4642 // Due to clamping, we may fail to detect cases of overscroll to the top;
4643 // We want the scroll manager to get an update in such cases and detect the change of direction
4644 // on the next frame.
4645 cx.notify();
4646 }
4647 });
4648 }
4649 }
4650 });
4651 }
4652
4653 fn paint_mouse_listeners(
4654 &mut self,
4655 layout: &EditorLayout,
4656 hovered_hunk: Option<HoveredHunk>,
4657 cx: &mut WindowContext,
4658 ) {
4659 self.paint_scroll_wheel_listener(layout, cx);
4660
4661 cx.on_mouse_event({
4662 let position_map = layout.position_map.clone();
4663 let editor = self.editor.clone();
4664 let text_hitbox = layout.text_hitbox.clone();
4665 let gutter_hitbox = layout.gutter_hitbox.clone();
4666
4667 move |event: &MouseDownEvent, phase, cx| {
4668 if phase == DispatchPhase::Bubble {
4669 match event.button {
4670 MouseButton::Left => editor.update(cx, |editor, cx| {
4671 Self::mouse_left_down(
4672 editor,
4673 event,
4674 hovered_hunk.clone(),
4675 &position_map,
4676 &text_hitbox,
4677 &gutter_hitbox,
4678 cx,
4679 );
4680 }),
4681 MouseButton::Right => editor.update(cx, |editor, cx| {
4682 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
4683 }),
4684 MouseButton::Middle => editor.update(cx, |editor, cx| {
4685 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
4686 }),
4687 _ => {}
4688 };
4689 }
4690 }
4691 });
4692
4693 cx.on_mouse_event({
4694 let editor = self.editor.clone();
4695 let position_map = layout.position_map.clone();
4696 let text_hitbox = layout.text_hitbox.clone();
4697
4698 move |event: &MouseUpEvent, phase, cx| {
4699 if phase == DispatchPhase::Bubble {
4700 editor.update(cx, |editor, cx| {
4701 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
4702 });
4703 }
4704 }
4705 });
4706 cx.on_mouse_event({
4707 let position_map = layout.position_map.clone();
4708 let editor = self.editor.clone();
4709 let text_hitbox = layout.text_hitbox.clone();
4710 let gutter_hitbox = layout.gutter_hitbox.clone();
4711
4712 move |event: &MouseMoveEvent, phase, cx| {
4713 if phase == DispatchPhase::Bubble {
4714 editor.update(cx, |editor, cx| {
4715 if editor.hover_state.focused(cx) {
4716 return;
4717 }
4718 if event.pressed_button == Some(MouseButton::Left)
4719 || event.pressed_button == Some(MouseButton::Middle)
4720 {
4721 Self::mouse_dragged(
4722 editor,
4723 event,
4724 &position_map,
4725 text_hitbox.bounds,
4726 cx,
4727 )
4728 }
4729
4730 Self::mouse_moved(
4731 editor,
4732 event,
4733 &position_map,
4734 &text_hitbox,
4735 &gutter_hitbox,
4736 cx,
4737 )
4738 });
4739 }
4740 }
4741 });
4742 }
4743
4744 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
4745 bounds.top_right().x - self.style.scrollbar_width
4746 }
4747
4748 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
4749 let style = &self.style;
4750 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4751 let layout = cx
4752 .text_system()
4753 .shape_line(
4754 SharedString::from(" ".repeat(column)),
4755 font_size,
4756 &[TextRun {
4757 len: column,
4758 font: style.text.font(),
4759 color: Hsla::default(),
4760 background_color: None,
4761 underline: None,
4762 strikethrough: None,
4763 }],
4764 )
4765 .unwrap();
4766
4767 layout.width
4768 }
4769
4770 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
4771 let digit_count = (snapshot.widest_line_number() as f32).log10().floor() as usize + 1;
4772 self.column_pixels(digit_count, cx)
4773 }
4774}
4775
4776fn jump_data(
4777 snapshot: &EditorSnapshot,
4778 block_row_start: DisplayRow,
4779 height: u32,
4780 for_excerpt: &ExcerptInfo,
4781 cx: &mut WindowContext<'_>,
4782) -> JumpData {
4783 let range = &for_excerpt.range;
4784 let buffer = &for_excerpt.buffer;
4785 let jump_path = project::File::from_dyn(buffer.file()).map(|file| ProjectPath {
4786 worktree_id: file.worktree_id(cx),
4787 path: file.path.clone(),
4788 });
4789 let jump_anchor = range
4790 .primary
4791 .as_ref()
4792 .map_or(range.context.start, |primary| primary.start);
4793
4794 let excerpt_start = range.context.start;
4795 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
4796 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
4797 0
4798 } else {
4799 let excerpt_start_row = language::ToPoint::to_point(&jump_anchor, buffer).row;
4800 jump_position.row - excerpt_start_row
4801 };
4802 let line_offset_from_top = block_row_start.0 + height + offset_from_excerpt_start
4803 - snapshot
4804 .scroll_anchor
4805 .scroll_position(&snapshot.display_snapshot)
4806 .y as u32;
4807 JumpData {
4808 excerpt_id: for_excerpt.id,
4809 anchor: jump_anchor,
4810 position: language::ToPoint::to_point(&jump_anchor, buffer),
4811 path: jump_path,
4812 line_offset_from_top,
4813 }
4814}
4815
4816fn all_edits_insertions_or_deletions(
4817 edits: &Vec<(Range<Anchor>, String)>,
4818 snapshot: &MultiBufferSnapshot,
4819) -> bool {
4820 let mut all_insertions = true;
4821 let mut all_deletions = true;
4822
4823 for (range, new_text) in edits.iter() {
4824 let range_is_empty = range.to_offset(&snapshot).is_empty();
4825 let text_is_empty = new_text.is_empty();
4826
4827 if range_is_empty != text_is_empty {
4828 if range_is_empty {
4829 all_deletions = false;
4830 } else {
4831 all_insertions = false;
4832 }
4833 } else {
4834 return false;
4835 }
4836
4837 if !all_insertions && !all_deletions {
4838 return false;
4839 }
4840 }
4841 all_insertions || all_deletions
4842}
4843
4844#[allow(clippy::too_many_arguments)]
4845fn prepaint_gutter_button(
4846 button: IconButton,
4847 row: DisplayRow,
4848 line_height: Pixels,
4849 gutter_dimensions: &GutterDimensions,
4850 scroll_pixel_position: gpui::Point<Pixels>,
4851 gutter_hitbox: &Hitbox,
4852 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4853 cx: &mut WindowContext<'_>,
4854) -> AnyElement {
4855 let mut button = button.into_any_element();
4856 let available_space = size(
4857 AvailableSpace::MinContent,
4858 AvailableSpace::Definite(line_height),
4859 );
4860 let indicator_size = button.layout_as_root(available_space, cx);
4861
4862 let blame_width = gutter_dimensions.git_blame_entries_width;
4863 let gutter_width = rows_with_hunk_bounds
4864 .get(&row)
4865 .map(|bounds| bounds.size.width);
4866 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
4867
4868 let mut x = left_offset;
4869 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
4870 - indicator_size.width
4871 - left_offset;
4872 x += available_width / 2.;
4873
4874 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
4875 y += (line_height - indicator_size.height) / 2.;
4876
4877 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
4878 button
4879}
4880
4881fn render_inline_blame_entry(
4882 blame: &gpui::Model<GitBlame>,
4883 blame_entry: BlameEntry,
4884 style: &EditorStyle,
4885 workspace: Option<WeakView<Workspace>>,
4886 cx: &mut WindowContext<'_>,
4887) -> AnyElement {
4888 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4889
4890 let author = blame_entry.author.as_deref().unwrap_or_default();
4891 let summary_enabled = ProjectSettings::get_global(cx)
4892 .git
4893 .show_inline_commit_summary();
4894
4895 let text = match blame_entry.summary.as_ref() {
4896 Some(summary) if summary_enabled => {
4897 format!("{}, {} - {}", author, relative_timestamp, summary)
4898 }
4899 _ => format!("{}, {}", author, relative_timestamp),
4900 };
4901
4902 let details = blame.read(cx).details_for_entry(&blame_entry);
4903
4904 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
4905
4906 h_flex()
4907 .id("inline-blame")
4908 .w_full()
4909 .font_family(style.text.font().family)
4910 .text_color(cx.theme().status().hint)
4911 .line_height(style.text.line_height)
4912 .child(Icon::new(IconName::FileGit).color(Color::Hint))
4913 .child(text)
4914 .gap_2()
4915 .hoverable_tooltip(move |_| tooltip.clone().into())
4916 .into_any()
4917}
4918
4919fn render_blame_entry(
4920 ix: usize,
4921 blame: &gpui::Model<GitBlame>,
4922 blame_entry: BlameEntry,
4923 style: &EditorStyle,
4924 last_used_color: &mut Option<(PlayerColor, Oid)>,
4925 editor: View<Editor>,
4926 cx: &mut WindowContext<'_>,
4927) -> AnyElement {
4928 let mut sha_color = cx
4929 .theme()
4930 .players()
4931 .color_for_participant(blame_entry.sha.into());
4932 // If the last color we used is the same as the one we get for this line, but
4933 // the commit SHAs are different, then we try again to get a different color.
4934 match *last_used_color {
4935 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
4936 let index: u32 = blame_entry.sha.into();
4937 sha_color = cx.theme().players().color_for_participant(index + 1);
4938 }
4939 _ => {}
4940 };
4941 last_used_color.replace((sha_color, blame_entry.sha));
4942
4943 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4944
4945 let short_commit_id = blame_entry.sha.display_short();
4946
4947 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
4948 let name = util::truncate_and_trailoff(author_name, GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED);
4949
4950 let details = blame.read(cx).details_for_entry(&blame_entry);
4951
4952 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
4953
4954 let tooltip = cx.new_view(|_| {
4955 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
4956 });
4957
4958 h_flex()
4959 .w_full()
4960 .justify_between()
4961 .font_family(style.text.font().family)
4962 .line_height(style.text.line_height)
4963 .id(("blame", ix))
4964 .text_color(cx.theme().status().hint)
4965 .pr_2()
4966 .gap_2()
4967 .child(
4968 h_flex()
4969 .items_center()
4970 .gap_2()
4971 .child(div().text_color(sha_color.cursor).child(short_commit_id))
4972 .child(name),
4973 )
4974 .child(relative_timestamp)
4975 .on_mouse_down(MouseButton::Right, {
4976 let blame_entry = blame_entry.clone();
4977 let details = details.clone();
4978 move |event, cx| {
4979 deploy_blame_entry_context_menu(
4980 &blame_entry,
4981 details.as_ref(),
4982 editor.clone(),
4983 event.position,
4984 cx,
4985 );
4986 }
4987 })
4988 .hover(|style| style.bg(cx.theme().colors().element_hover))
4989 .when_some(
4990 details.and_then(|details| details.permalink),
4991 |this, url| {
4992 let url = url.clone();
4993 this.cursor_pointer().on_click(move |_, cx| {
4994 cx.stop_propagation();
4995 cx.open_url(url.as_str())
4996 })
4997 },
4998 )
4999 .hoverable_tooltip(move |_| tooltip.clone().into())
5000 .into_any()
5001}
5002
5003fn deploy_blame_entry_context_menu(
5004 blame_entry: &BlameEntry,
5005 details: Option<&CommitDetails>,
5006 editor: View<Editor>,
5007 position: gpui::Point<Pixels>,
5008 cx: &mut WindowContext<'_>,
5009) {
5010 let context_menu = ContextMenu::build(cx, move |menu, _| {
5011 let sha = format!("{}", blame_entry.sha);
5012 menu.on_blur_subscription(Subscription::new(|| {}))
5013 .entry("Copy commit SHA", None, move |cx| {
5014 cx.write_to_clipboard(ClipboardItem::new_string(sha.clone()));
5015 })
5016 .when_some(
5017 details.and_then(|details| details.permalink.clone()),
5018 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
5019 )
5020 });
5021
5022 editor.update(cx, move |editor, cx| {
5023 editor.mouse_context_menu = Some(MouseContextMenu::new(
5024 MenuPosition::PinnedToScreen(position),
5025 context_menu,
5026 cx,
5027 ));
5028 cx.notify();
5029 });
5030}
5031
5032#[derive(Debug)]
5033pub(crate) struct LineWithInvisibles {
5034 fragments: SmallVec<[LineFragment; 1]>,
5035 invisibles: Vec<Invisible>,
5036 len: usize,
5037 width: Pixels,
5038 font_size: Pixels,
5039}
5040
5041#[allow(clippy::large_enum_variant)]
5042enum LineFragment {
5043 Text(ShapedLine),
5044 Element {
5045 element: Option<AnyElement>,
5046 size: Size<Pixels>,
5047 len: usize,
5048 },
5049}
5050
5051impl fmt::Debug for LineFragment {
5052 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
5053 match self {
5054 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
5055 LineFragment::Element { size, len, .. } => f
5056 .debug_struct("Element")
5057 .field("size", size)
5058 .field("len", len)
5059 .finish(),
5060 }
5061 }
5062}
5063
5064impl LineWithInvisibles {
5065 #[allow(clippy::too_many_arguments)]
5066 fn from_chunks<'a>(
5067 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
5068 editor_style: &EditorStyle,
5069 max_line_len: usize,
5070 max_line_count: usize,
5071 editor_mode: EditorMode,
5072 text_width: Pixels,
5073 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
5074 cx: &mut WindowContext,
5075 ) -> Vec<Self> {
5076 let text_style = &editor_style.text;
5077 let mut layouts = Vec::with_capacity(max_line_count);
5078 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
5079 let mut line = String::new();
5080 let mut invisibles = Vec::new();
5081 let mut width = Pixels::ZERO;
5082 let mut len = 0;
5083 let mut styles = Vec::new();
5084 let mut non_whitespace_added = false;
5085 let mut row = 0;
5086 let mut line_exceeded_max_len = false;
5087 let font_size = text_style.font_size.to_pixels(cx.rem_size());
5088
5089 let ellipsis = SharedString::from("⋯");
5090
5091 for highlighted_chunk in chunks.chain([HighlightedChunk {
5092 text: "\n",
5093 style: None,
5094 is_tab: false,
5095 replacement: None,
5096 }]) {
5097 if let Some(replacement) = highlighted_chunk.replacement {
5098 if !line.is_empty() {
5099 let shaped_line = cx
5100 .text_system()
5101 .shape_line(line.clone().into(), font_size, &styles)
5102 .unwrap();
5103 width += shaped_line.width;
5104 len += shaped_line.len;
5105 fragments.push(LineFragment::Text(shaped_line));
5106 line.clear();
5107 styles.clear();
5108 }
5109
5110 match replacement {
5111 ChunkReplacement::Renderer(renderer) => {
5112 let available_width = if renderer.constrain_width {
5113 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
5114 ellipsis.clone()
5115 } else {
5116 SharedString::from(Arc::from(highlighted_chunk.text))
5117 };
5118 let shaped_line = cx
5119 .text_system()
5120 .shape_line(
5121 chunk,
5122 font_size,
5123 &[text_style.to_run(highlighted_chunk.text.len())],
5124 )
5125 .unwrap();
5126 AvailableSpace::Definite(shaped_line.width)
5127 } else {
5128 AvailableSpace::MinContent
5129 };
5130
5131 let mut element = (renderer.render)(&mut ChunkRendererContext {
5132 context: cx,
5133 max_width: text_width,
5134 });
5135 let line_height = text_style.line_height_in_pixels(cx.rem_size());
5136 let size = element.layout_as_root(
5137 size(available_width, AvailableSpace::Definite(line_height)),
5138 cx,
5139 );
5140
5141 width += size.width;
5142 len += highlighted_chunk.text.len();
5143 fragments.push(LineFragment::Element {
5144 element: Some(element),
5145 size,
5146 len: highlighted_chunk.text.len(),
5147 });
5148 }
5149 ChunkReplacement::Str(x) => {
5150 let text_style = if let Some(style) = highlighted_chunk.style {
5151 Cow::Owned(text_style.clone().highlight(style))
5152 } else {
5153 Cow::Borrowed(text_style)
5154 };
5155
5156 let run = TextRun {
5157 len: x.len(),
5158 font: text_style.font(),
5159 color: text_style.color,
5160 background_color: text_style.background_color,
5161 underline: text_style.underline,
5162 strikethrough: text_style.strikethrough,
5163 };
5164 let line_layout = cx
5165 .text_system()
5166 .shape_line(x, font_size, &[run])
5167 .unwrap()
5168 .with_len(highlighted_chunk.text.len());
5169
5170 width += line_layout.width;
5171 len += highlighted_chunk.text.len();
5172 fragments.push(LineFragment::Text(line_layout))
5173 }
5174 }
5175 } else {
5176 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
5177 if ix > 0 {
5178 let shaped_line = cx
5179 .text_system()
5180 .shape_line(line.clone().into(), font_size, &styles)
5181 .unwrap();
5182 width += shaped_line.width;
5183 len += shaped_line.len;
5184 fragments.push(LineFragment::Text(shaped_line));
5185 layouts.push(Self {
5186 width: mem::take(&mut width),
5187 len: mem::take(&mut len),
5188 fragments: mem::take(&mut fragments),
5189 invisibles: std::mem::take(&mut invisibles),
5190 font_size,
5191 });
5192
5193 line.clear();
5194 styles.clear();
5195 row += 1;
5196 line_exceeded_max_len = false;
5197 non_whitespace_added = false;
5198 if row == max_line_count {
5199 return layouts;
5200 }
5201 }
5202
5203 if !line_chunk.is_empty() && !line_exceeded_max_len {
5204 let text_style = if let Some(style) = highlighted_chunk.style {
5205 Cow::Owned(text_style.clone().highlight(style))
5206 } else {
5207 Cow::Borrowed(text_style)
5208 };
5209
5210 if line.len() + line_chunk.len() > max_line_len {
5211 let mut chunk_len = max_line_len - line.len();
5212 while !line_chunk.is_char_boundary(chunk_len) {
5213 chunk_len -= 1;
5214 }
5215 line_chunk = &line_chunk[..chunk_len];
5216 line_exceeded_max_len = true;
5217 }
5218
5219 styles.push(TextRun {
5220 len: line_chunk.len(),
5221 font: text_style.font(),
5222 color: text_style.color,
5223 background_color: text_style.background_color,
5224 underline: text_style.underline,
5225 strikethrough: text_style.strikethrough,
5226 });
5227
5228 if editor_mode == EditorMode::Full {
5229 // Line wrap pads its contents with fake whitespaces,
5230 // avoid printing them
5231 let is_soft_wrapped = is_row_soft_wrapped(row);
5232 if highlighted_chunk.is_tab {
5233 if non_whitespace_added || !is_soft_wrapped {
5234 invisibles.push(Invisible::Tab {
5235 line_start_offset: line.len(),
5236 line_end_offset: line.len() + line_chunk.len(),
5237 });
5238 }
5239 } else {
5240 invisibles.extend(
5241 line_chunk
5242 .bytes()
5243 .enumerate()
5244 .filter(|(_, line_byte)| {
5245 let is_whitespace =
5246 (*line_byte as char).is_whitespace();
5247 non_whitespace_added |= !is_whitespace;
5248 is_whitespace
5249 && (non_whitespace_added || !is_soft_wrapped)
5250 })
5251 .map(|(whitespace_index, _)| Invisible::Whitespace {
5252 line_offset: line.len() + whitespace_index,
5253 }),
5254 )
5255 }
5256 }
5257
5258 line.push_str(line_chunk);
5259 }
5260 }
5261 }
5262 }
5263
5264 layouts
5265 }
5266
5267 fn prepaint(
5268 &mut self,
5269 line_height: Pixels,
5270 scroll_pixel_position: gpui::Point<Pixels>,
5271 row: DisplayRow,
5272 content_origin: gpui::Point<Pixels>,
5273 line_elements: &mut SmallVec<[AnyElement; 1]>,
5274 cx: &mut WindowContext,
5275 ) {
5276 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
5277 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
5278 for fragment in &mut self.fragments {
5279 match fragment {
5280 LineFragment::Text(line) => {
5281 fragment_origin.x += line.width;
5282 }
5283 LineFragment::Element { element, size, .. } => {
5284 let mut element = element
5285 .take()
5286 .expect("you can't prepaint LineWithInvisibles twice");
5287
5288 // Center the element vertically within the line.
5289 let mut element_origin = fragment_origin;
5290 element_origin.y += (line_height - size.height) / 2.;
5291 element.prepaint_at(element_origin, cx);
5292 line_elements.push(element);
5293
5294 fragment_origin.x += size.width;
5295 }
5296 }
5297 }
5298 }
5299
5300 fn draw(
5301 &self,
5302 layout: &EditorLayout,
5303 row: DisplayRow,
5304 content_origin: gpui::Point<Pixels>,
5305 whitespace_setting: ShowWhitespaceSetting,
5306 selection_ranges: &[Range<DisplayPoint>],
5307 cx: &mut WindowContext,
5308 ) {
5309 let line_height = layout.position_map.line_height;
5310 let line_y = line_height
5311 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
5312
5313 let mut fragment_origin =
5314 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
5315
5316 for fragment in &self.fragments {
5317 match fragment {
5318 LineFragment::Text(line) => {
5319 line.paint(fragment_origin, line_height, cx).log_err();
5320 fragment_origin.x += line.width;
5321 }
5322 LineFragment::Element { size, .. } => {
5323 fragment_origin.x += size.width;
5324 }
5325 }
5326 }
5327
5328 self.draw_invisibles(
5329 selection_ranges,
5330 layout,
5331 content_origin,
5332 line_y,
5333 row,
5334 line_height,
5335 whitespace_setting,
5336 cx,
5337 );
5338 }
5339
5340 #[allow(clippy::too_many_arguments)]
5341 fn draw_invisibles(
5342 &self,
5343 selection_ranges: &[Range<DisplayPoint>],
5344 layout: &EditorLayout,
5345 content_origin: gpui::Point<Pixels>,
5346 line_y: Pixels,
5347 row: DisplayRow,
5348 line_height: Pixels,
5349 whitespace_setting: ShowWhitespaceSetting,
5350 cx: &mut WindowContext,
5351 ) {
5352 let extract_whitespace_info = |invisible: &Invisible| {
5353 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
5354 Invisible::Tab {
5355 line_start_offset,
5356 line_end_offset,
5357 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
5358 Invisible::Whitespace { line_offset } => {
5359 (*line_offset, line_offset + 1, &layout.space_invisible)
5360 }
5361 };
5362
5363 let x_offset = self.x_for_index(token_offset);
5364 let invisible_offset =
5365 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
5366 let origin = content_origin
5367 + gpui::point(
5368 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
5369 line_y,
5370 );
5371
5372 (
5373 [token_offset, token_end_offset],
5374 Box::new(move |cx: &mut WindowContext| {
5375 invisible_symbol.paint(origin, line_height, cx).log_err();
5376 }),
5377 )
5378 };
5379
5380 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
5381 match whitespace_setting {
5382 ShowWhitespaceSetting::None => (),
5383 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
5384 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
5385 let invisible_point = DisplayPoint::new(row, start as u32);
5386 if !selection_ranges
5387 .iter()
5388 .any(|region| region.start <= invisible_point && invisible_point < region.end)
5389 {
5390 return;
5391 }
5392
5393 paint(cx);
5394 }),
5395
5396 // For a whitespace to be on a boundary, any of the following conditions need to be met:
5397 // - It is a tab
5398 // - It is adjacent to an edge (start or end)
5399 // - It is adjacent to a whitespace (left or right)
5400 ShowWhitespaceSetting::Boundary => {
5401 // 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
5402 // the above cases.
5403 // Note: We zip in the original `invisibles` to check for tab equality
5404 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
5405 for (([start, end], paint), invisible) in
5406 invisible_iter.zip_eq(self.invisibles.iter())
5407 {
5408 let should_render = match (&last_seen, invisible) {
5409 (_, Invisible::Tab { .. }) => true,
5410 (Some((_, last_end, _)), _) => *last_end == start,
5411 _ => false,
5412 };
5413
5414 if should_render || start == 0 || end == self.len {
5415 paint(cx);
5416
5417 // Since we are scanning from the left, we will skip over the first available whitespace that is part
5418 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
5419 if let Some((should_render_last, last_end, paint_last)) = last_seen {
5420 // Note that we need to make sure that the last one is actually adjacent
5421 if !should_render_last && last_end == start {
5422 paint_last(cx);
5423 }
5424 }
5425 }
5426
5427 // Manually render anything within a selection
5428 let invisible_point = DisplayPoint::new(row, start as u32);
5429 if selection_ranges.iter().any(|region| {
5430 region.start <= invisible_point && invisible_point < region.end
5431 }) {
5432 paint(cx);
5433 }
5434
5435 last_seen = Some((should_render, end, paint));
5436 }
5437 }
5438 }
5439 }
5440
5441 pub fn x_for_index(&self, index: usize) -> Pixels {
5442 let mut fragment_start_x = Pixels::ZERO;
5443 let mut fragment_start_index = 0;
5444
5445 for fragment in &self.fragments {
5446 match fragment {
5447 LineFragment::Text(shaped_line) => {
5448 let fragment_end_index = fragment_start_index + shaped_line.len;
5449 if index < fragment_end_index {
5450 return fragment_start_x
5451 + shaped_line.x_for_index(index - fragment_start_index);
5452 }
5453 fragment_start_x += shaped_line.width;
5454 fragment_start_index = fragment_end_index;
5455 }
5456 LineFragment::Element { len, size, .. } => {
5457 let fragment_end_index = fragment_start_index + len;
5458 if index < fragment_end_index {
5459 return fragment_start_x;
5460 }
5461 fragment_start_x += size.width;
5462 fragment_start_index = fragment_end_index;
5463 }
5464 }
5465 }
5466
5467 fragment_start_x
5468 }
5469
5470 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
5471 let mut fragment_start_x = Pixels::ZERO;
5472 let mut fragment_start_index = 0;
5473
5474 for fragment in &self.fragments {
5475 match fragment {
5476 LineFragment::Text(shaped_line) => {
5477 let fragment_end_x = fragment_start_x + shaped_line.width;
5478 if x < fragment_end_x {
5479 return Some(
5480 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
5481 );
5482 }
5483 fragment_start_x = fragment_end_x;
5484 fragment_start_index += shaped_line.len;
5485 }
5486 LineFragment::Element { len, size, .. } => {
5487 let fragment_end_x = fragment_start_x + size.width;
5488 if x < fragment_end_x {
5489 return Some(fragment_start_index);
5490 }
5491 fragment_start_index += len;
5492 fragment_start_x = fragment_end_x;
5493 }
5494 }
5495 }
5496
5497 None
5498 }
5499
5500 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
5501 let mut fragment_start_index = 0;
5502
5503 for fragment in &self.fragments {
5504 match fragment {
5505 LineFragment::Text(shaped_line) => {
5506 let fragment_end_index = fragment_start_index + shaped_line.len;
5507 if index < fragment_end_index {
5508 return shaped_line.font_id_for_index(index - fragment_start_index);
5509 }
5510 fragment_start_index = fragment_end_index;
5511 }
5512 LineFragment::Element { len, .. } => {
5513 let fragment_end_index = fragment_start_index + len;
5514 if index < fragment_end_index {
5515 return None;
5516 }
5517 fragment_start_index = fragment_end_index;
5518 }
5519 }
5520 }
5521
5522 None
5523 }
5524}
5525
5526#[derive(Debug, Clone, Copy, PartialEq, Eq)]
5527enum Invisible {
5528 /// A tab character
5529 ///
5530 /// A tab character is internally represented by spaces (configured by the user's tab width)
5531 /// aligned to the nearest column, so it's necessary to store the start and end offset for
5532 /// adjacency checks.
5533 Tab {
5534 line_start_offset: usize,
5535 line_end_offset: usize,
5536 },
5537 Whitespace {
5538 line_offset: usize,
5539 },
5540}
5541
5542impl EditorElement {
5543 /// Returns the rem size to use when rendering the [`EditorElement`].
5544 ///
5545 /// This allows UI elements to scale based on the `buffer_font_size`.
5546 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
5547 match self.editor.read(cx).mode {
5548 EditorMode::Full => {
5549 let buffer_font_size = self.style.text.font_size;
5550 match buffer_font_size {
5551 AbsoluteLength::Pixels(pixels) => {
5552 let rem_size_scale = {
5553 // Our default UI font size is 14px on a 16px base scale.
5554 // This means the default UI font size is 0.875rems.
5555 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
5556
5557 // We then determine the delta between a single rem and the default font
5558 // size scale.
5559 let default_font_size_delta = 1. - default_font_size_scale;
5560
5561 // Finally, we add this delta to 1rem to get the scale factor that
5562 // should be used to scale up the UI.
5563 1. + default_font_size_delta
5564 };
5565
5566 Some(pixels * rem_size_scale)
5567 }
5568 AbsoluteLength::Rems(rems) => {
5569 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
5570 }
5571 }
5572 }
5573 // We currently use single-line and auto-height editors in UI contexts,
5574 // so we don't want to scale everything with the buffer font size, as it
5575 // ends up looking off.
5576 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
5577 }
5578 }
5579}
5580
5581impl Element for EditorElement {
5582 type RequestLayoutState = ();
5583 type PrepaintState = EditorLayout;
5584
5585 fn id(&self) -> Option<ElementId> {
5586 None
5587 }
5588
5589 fn request_layout(
5590 &mut self,
5591 _: Option<&GlobalElementId>,
5592 cx: &mut WindowContext,
5593 ) -> (gpui::LayoutId, ()) {
5594 let rem_size = self.rem_size(cx);
5595 cx.with_rem_size(rem_size, |cx| {
5596 self.editor.update(cx, |editor, cx| {
5597 editor.set_style(self.style.clone(), cx);
5598
5599 let layout_id = match editor.mode {
5600 EditorMode::SingleLine { auto_width } => {
5601 let rem_size = cx.rem_size();
5602
5603 let height = self.style.text.line_height_in_pixels(rem_size);
5604 if auto_width {
5605 let editor_handle = cx.view().clone();
5606 let style = self.style.clone();
5607 cx.request_measured_layout(Style::default(), move |_, _, cx| {
5608 let editor_snapshot =
5609 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
5610 let line = Self::layout_lines(
5611 DisplayRow(0)..DisplayRow(1),
5612 &editor_snapshot,
5613 &style,
5614 px(f32::MAX),
5615 |_| false, // Single lines never soft wrap
5616 cx,
5617 )
5618 .pop()
5619 .unwrap();
5620
5621 let font_id = cx.text_system().resolve_font(&style.text.font());
5622 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5623 let em_width = cx
5624 .text_system()
5625 .typographic_bounds(font_id, font_size, 'm')
5626 .unwrap()
5627 .size
5628 .width;
5629
5630 size(line.width + em_width, height)
5631 })
5632 } else {
5633 let mut style = Style::default();
5634 style.size.height = height.into();
5635 style.size.width = relative(1.).into();
5636 cx.request_layout(style, None)
5637 }
5638 }
5639 EditorMode::AutoHeight { max_lines } => {
5640 let editor_handle = cx.view().clone();
5641 let max_line_number_width =
5642 self.max_line_number_width(&editor.snapshot(cx), cx);
5643 cx.request_measured_layout(
5644 Style::default(),
5645 move |known_dimensions, available_space, cx| {
5646 editor_handle
5647 .update(cx, |editor, cx| {
5648 compute_auto_height_layout(
5649 editor,
5650 max_lines,
5651 max_line_number_width,
5652 known_dimensions,
5653 available_space.width,
5654 cx,
5655 )
5656 })
5657 .unwrap_or_default()
5658 },
5659 )
5660 }
5661 EditorMode::Full => {
5662 let mut style = Style::default();
5663 style.size.width = relative(1.).into();
5664 style.size.height = relative(1.).into();
5665 cx.request_layout(style, None)
5666 }
5667 };
5668
5669 (layout_id, ())
5670 })
5671 })
5672 }
5673
5674 fn prepaint(
5675 &mut self,
5676 _: Option<&GlobalElementId>,
5677 bounds: Bounds<Pixels>,
5678 _: &mut Self::RequestLayoutState,
5679 cx: &mut WindowContext,
5680 ) -> Self::PrepaintState {
5681 let text_style = TextStyleRefinement {
5682 font_size: Some(self.style.text.font_size),
5683 line_height: Some(self.style.text.line_height),
5684 ..Default::default()
5685 };
5686 let focus_handle = self.editor.focus_handle(cx);
5687 cx.set_view_id(self.editor.entity_id());
5688 cx.set_focus_handle(&focus_handle);
5689
5690 let rem_size = self.rem_size(cx);
5691 cx.with_rem_size(rem_size, |cx| {
5692 cx.with_text_style(Some(text_style), |cx| {
5693 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
5694 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
5695 let style = self.style.clone();
5696
5697 let font_id = cx.text_system().resolve_font(&style.text.font());
5698 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5699 let line_height = style.text.line_height_in_pixels(cx.rem_size());
5700 let em_width = cx
5701 .text_system()
5702 .typographic_bounds(font_id, font_size, 'm')
5703 .unwrap()
5704 .size
5705 .width;
5706 let em_advance = cx
5707 .text_system()
5708 .advance(font_id, font_size, 'm')
5709 .unwrap()
5710 .width;
5711
5712 let letter_size = size(em_width, line_height);
5713
5714 let gutter_dimensions = snapshot.gutter_dimensions(
5715 font_id,
5716 font_size,
5717 em_width,
5718 em_advance,
5719 self.max_line_number_width(&snapshot, cx),
5720 cx,
5721 );
5722 let text_width = bounds.size.width - gutter_dimensions.width;
5723
5724 let editor_width = text_width - gutter_dimensions.margin - em_width;
5725
5726 snapshot = self.editor.update(cx, |editor, cx| {
5727 editor.last_bounds = Some(bounds);
5728 editor.gutter_dimensions = gutter_dimensions;
5729 editor.set_visible_line_count(bounds.size.height / line_height, cx);
5730
5731 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
5732 snapshot
5733 } else {
5734 let wrap_width = match editor.soft_wrap_mode(cx) {
5735 SoftWrap::GitDiff => None,
5736 SoftWrap::None => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
5737 SoftWrap::EditorWidth => Some(editor_width),
5738 SoftWrap::Column(column) => Some(column as f32 * em_advance),
5739 SoftWrap::Bounded(column) => {
5740 Some(editor_width.min(column as f32 * em_advance))
5741 }
5742 };
5743
5744 if editor.set_wrap_width(wrap_width, cx) {
5745 editor.snapshot(cx)
5746 } else {
5747 snapshot
5748 }
5749 }
5750 });
5751
5752 let wrap_guides = self
5753 .editor
5754 .read(cx)
5755 .wrap_guides(cx)
5756 .iter()
5757 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
5758 .collect::<SmallVec<[_; 2]>>();
5759
5760 let hitbox = cx.insert_hitbox(bounds, false);
5761 let gutter_hitbox =
5762 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
5763 let text_hitbox = cx.insert_hitbox(
5764 Bounds {
5765 origin: gutter_hitbox.top_right(),
5766 size: size(text_width, bounds.size.height),
5767 },
5768 false,
5769 );
5770 // Offset the content_bounds from the text_bounds by the gutter margin (which
5771 // is roughly half a character wide) to make hit testing work more like how we want.
5772 let content_origin =
5773 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
5774
5775 let scrollbar_bounds =
5776 Bounds::from_corners(content_origin, bounds.bottom_right());
5777
5778 let height_in_lines = scrollbar_bounds.size.height / line_height;
5779
5780 // NOTE: The max row number in the current file, minus one
5781 let max_row = snapshot.max_point().row().as_f32();
5782
5783 // NOTE: The max scroll position for the top of the window
5784 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
5785 (max_row - height_in_lines + 1.).max(0.)
5786 } else {
5787 let settings = EditorSettings::get_global(cx);
5788 match settings.scroll_beyond_last_line {
5789 ScrollBeyondLastLine::OnePage => max_row,
5790 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
5791 ScrollBeyondLastLine::VerticalScrollMargin => {
5792 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
5793 .max(0.)
5794 }
5795 }
5796 };
5797
5798 // TODO: Autoscrolling for both axes
5799 let mut autoscroll_request = None;
5800 let mut autoscroll_containing_element = false;
5801 let mut autoscroll_horizontally = false;
5802 self.editor.update(cx, |editor, cx| {
5803 autoscroll_request = editor.autoscroll_request();
5804 autoscroll_containing_element =
5805 autoscroll_request.is_some() || editor.has_pending_selection();
5806 // TODO: Is this horizontal or vertical?!
5807 autoscroll_horizontally =
5808 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
5809 snapshot = editor.snapshot(cx);
5810 });
5811
5812 let mut scroll_position = snapshot.scroll_position();
5813 // The scroll position is a fractional point, the whole number of which represents
5814 // the top of the window in terms of display rows.
5815 let start_row = DisplayRow(scroll_position.y as u32);
5816 let max_row = snapshot.max_point().row();
5817 let end_row = cmp::min(
5818 (scroll_position.y + height_in_lines).ceil() as u32,
5819 max_row.next_row().0,
5820 );
5821 let end_row = DisplayRow(end_row);
5822
5823 let buffer_rows = snapshot
5824 .buffer_rows(start_row)
5825 .take((start_row..end_row).len())
5826 .collect::<Vec<_>>();
5827 let is_row_soft_wrapped =
5828 |row| buffer_rows.get(row).copied().flatten().is_none();
5829
5830 let start_anchor = if start_row == Default::default() {
5831 Anchor::min()
5832 } else {
5833 snapshot.buffer_snapshot.anchor_before(
5834 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
5835 )
5836 };
5837 let end_anchor = if end_row > max_row {
5838 Anchor::max()
5839 } else {
5840 snapshot.buffer_snapshot.anchor_before(
5841 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
5842 )
5843 };
5844
5845 let highlighted_rows = self
5846 .editor
5847 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
5848 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
5849 start_anchor..end_anchor,
5850 &snapshot.display_snapshot,
5851 cx.theme().colors(),
5852 );
5853 let highlighted_gutter_ranges =
5854 self.editor.read(cx).gutter_highlights_in_range(
5855 start_anchor..end_anchor,
5856 &snapshot.display_snapshot,
5857 cx,
5858 );
5859
5860 let redacted_ranges = self.editor.read(cx).redacted_ranges(
5861 start_anchor..end_anchor,
5862 &snapshot.display_snapshot,
5863 cx,
5864 );
5865
5866 let local_selections: Vec<Selection<Point>> =
5867 self.editor.update(cx, |editor, cx| {
5868 let mut selections = editor
5869 .selections
5870 .disjoint_in_range(start_anchor..end_anchor, cx);
5871 selections.extend(editor.selections.pending(cx));
5872 selections
5873 });
5874
5875 let (selections, active_rows, newest_selection_head) = self.layout_selections(
5876 start_anchor,
5877 end_anchor,
5878 &local_selections,
5879 &snapshot,
5880 start_row,
5881 end_row,
5882 cx,
5883 );
5884
5885 let line_numbers = self.layout_line_numbers(
5886 start_row..end_row,
5887 buffer_rows.iter().copied(),
5888 &active_rows,
5889 newest_selection_head,
5890 &snapshot,
5891 cx,
5892 );
5893
5894 let mut crease_toggles = cx.with_element_namespace("crease_toggles", |cx| {
5895 self.layout_crease_toggles(
5896 start_row..end_row,
5897 buffer_rows.iter().copied(),
5898 &active_rows,
5899 &snapshot,
5900 cx,
5901 )
5902 });
5903 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5904 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
5905 });
5906
5907 let display_hunks = self.layout_gutter_git_hunks(
5908 line_height,
5909 &gutter_hitbox,
5910 start_row..end_row,
5911 start_anchor..end_anchor,
5912 &snapshot,
5913 cx,
5914 );
5915
5916 let mut max_visible_line_width = Pixels::ZERO;
5917 let mut line_layouts = Self::layout_lines(
5918 start_row..end_row,
5919 &snapshot,
5920 &self.style,
5921 editor_width,
5922 is_row_soft_wrapped,
5923 cx,
5924 );
5925 for line_with_invisibles in &line_layouts {
5926 if line_with_invisibles.width > max_visible_line_width {
5927 max_visible_line_width = line_with_invisibles.width;
5928 }
5929 }
5930
5931 let longest_line_width = layout_line(
5932 snapshot.longest_row(),
5933 &snapshot,
5934 &style,
5935 editor_width,
5936 is_row_soft_wrapped,
5937 cx,
5938 )
5939 .width;
5940
5941 let scrollbar_range_data = ScrollbarRangeData::new(
5942 scrollbar_bounds,
5943 letter_size,
5944 &snapshot,
5945 longest_line_width,
5946 &style,
5947 cx,
5948 );
5949
5950 let scroll_range_bounds = scrollbar_range_data.scroll_range;
5951 let mut scroll_width = scroll_range_bounds.size.width;
5952
5953 let blocks = cx.with_element_namespace("blocks", |cx| {
5954 self.render_blocks(
5955 start_row..end_row,
5956 &snapshot,
5957 &hitbox,
5958 &text_hitbox,
5959 editor_width,
5960 &mut scroll_width,
5961 &gutter_dimensions,
5962 em_width,
5963 gutter_dimensions.full_width(),
5964 line_height,
5965 &line_layouts,
5966 &local_selections,
5967 is_row_soft_wrapped,
5968 cx,
5969 )
5970 });
5971 let mut blocks = match blocks {
5972 Ok(blocks) => blocks,
5973 Err(resized_blocks) => {
5974 self.editor.update(cx, |editor, cx| {
5975 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
5976 });
5977 return self.prepaint(None, bounds, &mut (), cx);
5978 }
5979 };
5980
5981 let start_buffer_row =
5982 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
5983 let end_buffer_row =
5984 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
5985
5986 let scroll_max = point(
5987 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
5988 max_row.as_f32(),
5989 );
5990
5991 self.editor.update(cx, |editor, cx| {
5992 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5993
5994 let autoscrolled = if autoscroll_horizontally {
5995 editor.autoscroll_horizontally(
5996 start_row,
5997 text_hitbox.size.width,
5998 scroll_width,
5999 em_width,
6000 &line_layouts,
6001 cx,
6002 )
6003 } else {
6004 false
6005 };
6006
6007 if clamped || autoscrolled {
6008 snapshot = editor.snapshot(cx);
6009 scroll_position = snapshot.scroll_position();
6010 }
6011 });
6012
6013 let scroll_pixel_position = point(
6014 scroll_position.x * em_width,
6015 scroll_position.y * line_height,
6016 );
6017
6018 let indent_guides = self.layout_indent_guides(
6019 content_origin,
6020 text_hitbox.origin,
6021 start_buffer_row..end_buffer_row,
6022 scroll_pixel_position,
6023 line_height,
6024 &snapshot,
6025 cx,
6026 );
6027
6028 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
6029 self.prepaint_crease_trailers(
6030 crease_trailers,
6031 &line_layouts,
6032 line_height,
6033 content_origin,
6034 scroll_pixel_position,
6035 em_width,
6036 cx,
6037 )
6038 });
6039
6040 let mut inline_blame = None;
6041 if let Some(newest_selection_head) = newest_selection_head {
6042 let display_row = newest_selection_head.row();
6043 if (start_row..end_row).contains(&display_row) {
6044 let line_ix = display_row.minus(start_row) as usize;
6045 let line_layout = &line_layouts[line_ix];
6046 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
6047 inline_blame = self.layout_inline_blame(
6048 display_row,
6049 &snapshot.display_snapshot,
6050 line_layout,
6051 crease_trailer_layout,
6052 em_width,
6053 content_origin,
6054 scroll_pixel_position,
6055 line_height,
6056 cx,
6057 );
6058 }
6059 }
6060
6061 let blamed_display_rows = self.layout_blame_entries(
6062 buffer_rows.into_iter(),
6063 em_width,
6064 scroll_position,
6065 line_height,
6066 &gutter_hitbox,
6067 gutter_dimensions.git_blame_entries_width,
6068 cx,
6069 );
6070
6071 let scroll_max = point(
6072 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
6073 max_scroll_top,
6074 );
6075
6076 self.editor.update(cx, |editor, cx| {
6077 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
6078
6079 let autoscrolled = if autoscroll_horizontally {
6080 editor.autoscroll_horizontally(
6081 start_row,
6082 text_hitbox.size.width,
6083 scroll_width,
6084 em_width,
6085 &line_layouts,
6086 cx,
6087 )
6088 } else {
6089 false
6090 };
6091
6092 if clamped || autoscrolled {
6093 snapshot = editor.snapshot(cx);
6094 scroll_position = snapshot.scroll_position();
6095 }
6096 });
6097
6098 let line_elements = self.prepaint_lines(
6099 start_row,
6100 &mut line_layouts,
6101 line_height,
6102 scroll_pixel_position,
6103 content_origin,
6104 cx,
6105 );
6106
6107 let mut block_start_rows = HashSet::default();
6108 cx.with_element_namespace("blocks", |cx| {
6109 self.layout_blocks(
6110 &mut blocks,
6111 &mut block_start_rows,
6112 &hitbox,
6113 line_height,
6114 scroll_pixel_position,
6115 cx,
6116 );
6117 });
6118
6119 let cursors = self.collect_cursors(&snapshot, cx);
6120 let visible_row_range = start_row..end_row;
6121 let non_visible_cursors = cursors
6122 .iter()
6123 .any(move |c| !visible_row_range.contains(&c.0.row()));
6124
6125 let visible_cursors = self.layout_visible_cursors(
6126 &snapshot,
6127 &selections,
6128 &block_start_rows,
6129 start_row..end_row,
6130 &line_layouts,
6131 &text_hitbox,
6132 content_origin,
6133 scroll_position,
6134 scroll_pixel_position,
6135 line_height,
6136 em_width,
6137 autoscroll_containing_element,
6138 cx,
6139 );
6140
6141 let scrollbars_layout = self.layout_scrollbars(
6142 &snapshot,
6143 scrollbar_range_data,
6144 scroll_position,
6145 non_visible_cursors,
6146 cx,
6147 );
6148
6149 let gutter_settings = EditorSettings::get_global(cx).gutter;
6150
6151 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
6152 editor
6153 .diff_map
6154 .hunks(false)
6155 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
6156 .map(|expanded_hunk| {
6157 let start_row = expanded_hunk
6158 .hunk_range
6159 .start
6160 .to_display_point(&snapshot)
6161 .row();
6162 (start_row, expanded_hunk.clone())
6163 })
6164 .collect::<HashMap<_, _>>()
6165 });
6166
6167 let rows_with_hunk_bounds = display_hunks
6168 .iter()
6169 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
6170 .fold(
6171 HashMap::default(),
6172 |mut rows_with_hunk_bounds, (hunk, bounds)| {
6173 match hunk {
6174 DisplayDiffHunk::Folded { display_row } => {
6175 rows_with_hunk_bounds.insert(*display_row, bounds);
6176 }
6177 DisplayDiffHunk::Unfolded {
6178 display_row_range, ..
6179 } => {
6180 for display_row in display_row_range.iter_rows() {
6181 rows_with_hunk_bounds.insert(display_row, bounds);
6182 }
6183 }
6184 }
6185 rows_with_hunk_bounds
6186 },
6187 );
6188 let mut code_actions_indicator = None;
6189 if let Some(newest_selection_head) = newest_selection_head {
6190 if (start_row..end_row).contains(&newest_selection_head.row()) {
6191 self.layout_context_menu(
6192 line_height,
6193 &text_hitbox,
6194 content_origin,
6195 start_row,
6196 scroll_pixel_position,
6197 &line_layouts,
6198 newest_selection_head,
6199 gutter_dimensions.width - gutter_dimensions.left_padding,
6200 cx,
6201 );
6202
6203 let show_code_actions = snapshot
6204 .show_code_actions
6205 .unwrap_or(gutter_settings.code_actions);
6206 if show_code_actions {
6207 let newest_selection_point =
6208 newest_selection_head.to_point(&snapshot.display_snapshot);
6209 let newest_selection_display_row =
6210 newest_selection_point.to_display_point(&snapshot).row();
6211 if !expanded_add_hunks_by_rows
6212 .contains_key(&newest_selection_display_row)
6213 {
6214 if !snapshot
6215 .is_line_folded(MultiBufferRow(newest_selection_point.row))
6216 {
6217 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
6218 MultiBufferRow(newest_selection_point.row),
6219 );
6220 if let Some((buffer, range)) = buffer {
6221 let buffer_id = buffer.remote_id();
6222 let row = range.start.row;
6223 let has_test_indicator = self
6224 .editor
6225 .read(cx)
6226 .tasks
6227 .contains_key(&(buffer_id, row));
6228
6229 if !has_test_indicator {
6230 code_actions_indicator = self
6231 .layout_code_actions_indicator(
6232 line_height,
6233 newest_selection_head,
6234 scroll_pixel_position,
6235 &gutter_dimensions,
6236 &gutter_hitbox,
6237 &rows_with_hunk_bounds,
6238 cx,
6239 );
6240 }
6241 }
6242 }
6243 }
6244 }
6245 }
6246 }
6247
6248 let test_indicators = if gutter_settings.runnables {
6249 self.layout_run_indicators(
6250 line_height,
6251 start_row..end_row,
6252 scroll_pixel_position,
6253 &gutter_dimensions,
6254 &gutter_hitbox,
6255 &rows_with_hunk_bounds,
6256 &snapshot,
6257 cx,
6258 )
6259 } else {
6260 Vec::new()
6261 };
6262
6263 self.layout_signature_help(
6264 &hitbox,
6265 content_origin,
6266 scroll_pixel_position,
6267 newest_selection_head,
6268 start_row,
6269 &line_layouts,
6270 line_height,
6271 em_width,
6272 cx,
6273 );
6274
6275 if !cx.has_active_drag() {
6276 self.layout_hover_popovers(
6277 &snapshot,
6278 &hitbox,
6279 &text_hitbox,
6280 start_row..end_row,
6281 content_origin,
6282 scroll_pixel_position,
6283 &line_layouts,
6284 line_height,
6285 em_width,
6286 cx,
6287 );
6288 }
6289
6290 let inline_completion_popover = self.layout_inline_completion_popover(
6291 &text_hitbox.bounds,
6292 &snapshot,
6293 start_row..end_row,
6294 scroll_position.y,
6295 scroll_position.y + height_in_lines,
6296 &line_layouts,
6297 line_height,
6298 scroll_pixel_position,
6299 editor_width,
6300 &style,
6301 cx,
6302 );
6303
6304 let mouse_context_menu = self.layout_mouse_context_menu(
6305 &snapshot,
6306 start_row..end_row,
6307 content_origin,
6308 cx,
6309 );
6310
6311 cx.with_element_namespace("crease_toggles", |cx| {
6312 self.prepaint_crease_toggles(
6313 &mut crease_toggles,
6314 line_height,
6315 &gutter_dimensions,
6316 gutter_settings,
6317 scroll_pixel_position,
6318 &gutter_hitbox,
6319 cx,
6320 )
6321 });
6322
6323 let invisible_symbol_font_size = font_size / 2.;
6324 let tab_invisible = cx
6325 .text_system()
6326 .shape_line(
6327 "→".into(),
6328 invisible_symbol_font_size,
6329 &[TextRun {
6330 len: "→".len(),
6331 font: self.style.text.font(),
6332 color: cx.theme().colors().editor_invisible,
6333 background_color: None,
6334 underline: None,
6335 strikethrough: None,
6336 }],
6337 )
6338 .unwrap();
6339 let space_invisible = cx
6340 .text_system()
6341 .shape_line(
6342 "•".into(),
6343 invisible_symbol_font_size,
6344 &[TextRun {
6345 len: "•".len(),
6346 font: self.style.text.font(),
6347 color: cx.theme().colors().editor_invisible,
6348 background_color: None,
6349 underline: None,
6350 strikethrough: None,
6351 }],
6352 )
6353 .unwrap();
6354
6355 EditorLayout {
6356 mode: snapshot.mode,
6357 position_map: Rc::new(PositionMap {
6358 size: bounds.size,
6359 scroll_pixel_position,
6360 scroll_max,
6361 line_layouts,
6362 line_height,
6363 em_width,
6364 em_advance,
6365 snapshot,
6366 }),
6367 visible_display_row_range: start_row..end_row,
6368 wrap_guides,
6369 indent_guides,
6370 hitbox,
6371 text_hitbox,
6372 gutter_hitbox,
6373 gutter_dimensions,
6374 display_hunks,
6375 content_origin,
6376 scrollbars_layout,
6377 active_rows,
6378 highlighted_rows,
6379 highlighted_ranges,
6380 highlighted_gutter_ranges,
6381 redacted_ranges,
6382 line_elements,
6383 line_numbers,
6384 blamed_display_rows,
6385 inline_blame,
6386 blocks,
6387 cursors,
6388 visible_cursors,
6389 selections,
6390 inline_completion_popover,
6391 mouse_context_menu,
6392 test_indicators,
6393 code_actions_indicator,
6394 crease_toggles,
6395 crease_trailers,
6396 tab_invisible,
6397 space_invisible,
6398 }
6399 })
6400 })
6401 })
6402 }
6403
6404 fn paint(
6405 &mut self,
6406 _: Option<&GlobalElementId>,
6407 bounds: Bounds<gpui::Pixels>,
6408 _: &mut Self::RequestLayoutState,
6409 layout: &mut Self::PrepaintState,
6410 cx: &mut WindowContext,
6411 ) {
6412 let focus_handle = self.editor.focus_handle(cx);
6413 let key_context = self.editor.update(cx, |editor, cx| editor.key_context(cx));
6414 cx.set_key_context(key_context);
6415 cx.handle_input(
6416 &focus_handle,
6417 ElementInputHandler::new(bounds, self.editor.clone()),
6418 );
6419 self.register_actions(cx);
6420 self.register_key_listeners(cx, layout);
6421
6422 let text_style = TextStyleRefinement {
6423 font_size: Some(self.style.text.font_size),
6424 line_height: Some(self.style.text.line_height),
6425 ..Default::default()
6426 };
6427 let hovered_hunk = layout
6428 .display_hunks
6429 .iter()
6430 .find_map(|(hunk, hunk_hitbox)| match hunk {
6431 DisplayDiffHunk::Folded { .. } => None,
6432 DisplayDiffHunk::Unfolded {
6433 diff_base_byte_range,
6434 multi_buffer_range,
6435 status,
6436 ..
6437 } => {
6438 if hunk_hitbox
6439 .as_ref()
6440 .map(|hitbox| hitbox.is_hovered(cx))
6441 .unwrap_or(false)
6442 {
6443 Some(HoveredHunk {
6444 status: *status,
6445 multi_buffer_range: multi_buffer_range.clone(),
6446 diff_base_byte_range: diff_base_byte_range.clone(),
6447 })
6448 } else {
6449 None
6450 }
6451 }
6452 });
6453 let rem_size = self.rem_size(cx);
6454 cx.with_rem_size(rem_size, |cx| {
6455 cx.with_text_style(Some(text_style), |cx| {
6456 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
6457 self.paint_mouse_listeners(layout, hovered_hunk, cx);
6458 self.paint_background(layout, cx);
6459 self.paint_indent_guides(layout, cx);
6460
6461 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6462 self.paint_blamed_display_rows(layout, cx);
6463 self.paint_line_numbers(layout, cx);
6464 }
6465
6466 self.paint_text(layout, cx);
6467
6468 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6469 self.paint_gutter_highlights(layout, cx);
6470 self.paint_gutter_indicators(layout, cx);
6471 }
6472
6473 if !layout.blocks.is_empty() {
6474 cx.with_element_namespace("blocks", |cx| {
6475 self.paint_blocks(layout, cx);
6476 });
6477 }
6478
6479 self.paint_scrollbars(layout, cx);
6480 self.paint_inline_completion_popover(layout, cx);
6481 self.paint_mouse_context_menu(layout, cx);
6482 });
6483 })
6484 })
6485 }
6486}
6487
6488pub(super) fn gutter_bounds(
6489 editor_bounds: Bounds<Pixels>,
6490 gutter_dimensions: GutterDimensions,
6491) -> Bounds<Pixels> {
6492 Bounds {
6493 origin: editor_bounds.origin,
6494 size: size(gutter_dimensions.width, editor_bounds.size.height),
6495 }
6496}
6497
6498struct ScrollbarRangeData {
6499 scrollbar_bounds: Bounds<Pixels>,
6500 scroll_range: Bounds<Pixels>,
6501 letter_size: Size<Pixels>,
6502}
6503
6504impl ScrollbarRangeData {
6505 pub fn new(
6506 scrollbar_bounds: Bounds<Pixels>,
6507 letter_size: Size<Pixels>,
6508 snapshot: &EditorSnapshot,
6509 longest_line_width: Pixels,
6510 style: &EditorStyle,
6511 cx: &WindowContext,
6512 ) -> ScrollbarRangeData {
6513 // TODO: Simplify this function down, it requires a lot of parameters
6514 let max_row = snapshot.max_point().row();
6515 let text_bounds_size = size(longest_line_width, max_row.0 as f32 * letter_size.height);
6516
6517 let scrollbar_width = style.scrollbar_width;
6518
6519 let settings = EditorSettings::get_global(cx);
6520 let scroll_beyond_last_line: Pixels = match settings.scroll_beyond_last_line {
6521 ScrollBeyondLastLine::OnePage => px(scrollbar_bounds.size.height / letter_size.height),
6522 ScrollBeyondLastLine::Off => px(1.),
6523 ScrollBeyondLastLine::VerticalScrollMargin => px(1.0 + settings.vertical_scroll_margin),
6524 };
6525
6526 let overscroll = size(
6527 scrollbar_width + (letter_size.width / 2.0),
6528 letter_size.height * scroll_beyond_last_line,
6529 );
6530
6531 let scroll_range = Bounds {
6532 origin: scrollbar_bounds.origin,
6533 size: text_bounds_size + overscroll,
6534 };
6535
6536 ScrollbarRangeData {
6537 scrollbar_bounds,
6538 scroll_range,
6539 letter_size,
6540 }
6541 }
6542}
6543
6544impl IntoElement for EditorElement {
6545 type Element = Self;
6546
6547 fn into_element(self) -> Self::Element {
6548 self
6549 }
6550}
6551
6552pub struct EditorLayout {
6553 position_map: Rc<PositionMap>,
6554 hitbox: Hitbox,
6555 text_hitbox: Hitbox,
6556 gutter_hitbox: Hitbox,
6557 gutter_dimensions: GutterDimensions,
6558 content_origin: gpui::Point<Pixels>,
6559 scrollbars_layout: AxisPair<Option<ScrollbarLayout>>,
6560 mode: EditorMode,
6561 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
6562 indent_guides: Option<Vec<IndentGuideLayout>>,
6563 visible_display_row_range: Range<DisplayRow>,
6564 active_rows: BTreeMap<DisplayRow, bool>,
6565 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
6566 line_elements: SmallVec<[AnyElement; 1]>,
6567 line_numbers: Vec<Option<ShapedLine>>,
6568 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
6569 blamed_display_rows: Option<Vec<AnyElement>>,
6570 inline_blame: Option<AnyElement>,
6571 blocks: Vec<BlockLayout>,
6572 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
6573 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
6574 redacted_ranges: Vec<Range<DisplayPoint>>,
6575 cursors: Vec<(DisplayPoint, Hsla)>,
6576 visible_cursors: Vec<CursorLayout>,
6577 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
6578 code_actions_indicator: Option<AnyElement>,
6579 test_indicators: Vec<AnyElement>,
6580 crease_toggles: Vec<Option<AnyElement>>,
6581 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
6582 inline_completion_popover: Option<AnyElement>,
6583 mouse_context_menu: Option<AnyElement>,
6584 tab_invisible: ShapedLine,
6585 space_invisible: ShapedLine,
6586}
6587
6588impl EditorLayout {
6589 fn line_end_overshoot(&self) -> Pixels {
6590 0.15 * self.position_map.line_height
6591 }
6592}
6593
6594struct ColoredRange<T> {
6595 start: T,
6596 end: T,
6597 color: Hsla,
6598}
6599
6600#[derive(Clone)]
6601struct ScrollbarLayout {
6602 hitbox: Hitbox,
6603 visible_range: Range<f32>,
6604 visible: bool,
6605 text_unit_size: Pixels,
6606 thumb_size: Pixels,
6607 axis: Axis,
6608}
6609
6610impl ScrollbarLayout {
6611 const BORDER_WIDTH: Pixels = px(1.0);
6612 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
6613 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
6614 // const MIN_THUMB_HEIGHT: Pixels = px(20.0);
6615
6616 fn thumb_bounds(&self) -> Bounds<Pixels> {
6617 match self.axis {
6618 Axis::Vertical => {
6619 let thumb_top = self.y_for_row(self.visible_range.start);
6620 let thumb_bottom = thumb_top + self.thumb_size;
6621 Bounds::from_corners(
6622 point(self.hitbox.left(), thumb_top),
6623 point(self.hitbox.right(), thumb_bottom),
6624 )
6625 }
6626 Axis::Horizontal => {
6627 let thumb_left =
6628 self.hitbox.left() + self.visible_range.start * self.text_unit_size;
6629 let thumb_right = thumb_left + self.thumb_size;
6630 Bounds::from_corners(
6631 point(thumb_left, self.hitbox.top()),
6632 point(thumb_right, self.hitbox.bottom()),
6633 )
6634 }
6635 }
6636 }
6637
6638 fn y_for_row(&self, row: f32) -> Pixels {
6639 self.hitbox.top() + row * self.text_unit_size
6640 }
6641
6642 fn marker_quads_for_ranges(
6643 &self,
6644 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
6645 column: Option<usize>,
6646 ) -> Vec<PaintQuad> {
6647 struct MinMax {
6648 min: Pixels,
6649 max: Pixels,
6650 }
6651 let (x_range, height_limit) = if let Some(column) = column {
6652 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
6653 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
6654 let end = start + column_width;
6655 (
6656 Range { start, end },
6657 MinMax {
6658 min: Self::MIN_MARKER_HEIGHT,
6659 max: px(f32::MAX),
6660 },
6661 )
6662 } else {
6663 (
6664 Range {
6665 start: Self::BORDER_WIDTH,
6666 end: self.hitbox.size.width,
6667 },
6668 MinMax {
6669 min: Self::LINE_MARKER_HEIGHT,
6670 max: Self::LINE_MARKER_HEIGHT,
6671 },
6672 )
6673 };
6674
6675 let row_to_y = |row: DisplayRow| row.as_f32() * self.text_unit_size;
6676 let mut pixel_ranges = row_ranges
6677 .into_iter()
6678 .map(|range| {
6679 let start_y = row_to_y(range.start);
6680 let end_y = row_to_y(range.end)
6681 + self
6682 .text_unit_size
6683 .max(height_limit.min)
6684 .min(height_limit.max);
6685 ColoredRange {
6686 start: start_y,
6687 end: end_y,
6688 color: range.color,
6689 }
6690 })
6691 .peekable();
6692
6693 let mut quads = Vec::new();
6694 while let Some(mut pixel_range) = pixel_ranges.next() {
6695 while let Some(next_pixel_range) = pixel_ranges.peek() {
6696 if pixel_range.end >= next_pixel_range.start - px(1.0)
6697 && pixel_range.color == next_pixel_range.color
6698 {
6699 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
6700 pixel_ranges.next();
6701 } else {
6702 break;
6703 }
6704 }
6705
6706 let bounds = Bounds::from_corners(
6707 point(x_range.start, pixel_range.start),
6708 point(x_range.end, pixel_range.end),
6709 );
6710 quads.push(quad(
6711 bounds,
6712 Corners::default(),
6713 pixel_range.color,
6714 Edges::default(),
6715 Hsla::transparent_black(),
6716 ));
6717 }
6718
6719 quads
6720 }
6721}
6722
6723struct CreaseTrailerLayout {
6724 element: AnyElement,
6725 bounds: Bounds<Pixels>,
6726}
6727
6728struct PositionMap {
6729 size: Size<Pixels>,
6730 line_height: Pixels,
6731 scroll_pixel_position: gpui::Point<Pixels>,
6732 scroll_max: gpui::Point<f32>,
6733 em_width: Pixels,
6734 em_advance: Pixels,
6735 line_layouts: Vec<LineWithInvisibles>,
6736 snapshot: EditorSnapshot,
6737}
6738
6739#[derive(Debug, Copy, Clone)]
6740pub struct PointForPosition {
6741 pub previous_valid: DisplayPoint,
6742 pub next_valid: DisplayPoint,
6743 pub exact_unclipped: DisplayPoint,
6744 pub column_overshoot_after_line_end: u32,
6745}
6746
6747impl PointForPosition {
6748 pub fn as_valid(&self) -> Option<DisplayPoint> {
6749 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
6750 Some(self.previous_valid)
6751 } else {
6752 None
6753 }
6754 }
6755}
6756
6757impl PositionMap {
6758 fn point_for_position(
6759 &self,
6760 text_bounds: Bounds<Pixels>,
6761 position: gpui::Point<Pixels>,
6762 ) -> PointForPosition {
6763 let scroll_position = self.snapshot.scroll_position();
6764 let position = position - text_bounds.origin;
6765 let y = position.y.max(px(0.)).min(self.size.height);
6766 let x = position.x + (scroll_position.x * self.em_width);
6767 let row = ((y / self.line_height) + scroll_position.y) as u32;
6768
6769 let (column, x_overshoot_after_line_end) = if let Some(line) = self
6770 .line_layouts
6771 .get(row as usize - scroll_position.y as usize)
6772 {
6773 if let Some(ix) = line.index_for_x(x) {
6774 (ix as u32, px(0.))
6775 } else {
6776 (line.len as u32, px(0.).max(x - line.width))
6777 }
6778 } else {
6779 (0, x)
6780 };
6781
6782 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
6783 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
6784 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
6785
6786 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
6787 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
6788 PointForPosition {
6789 previous_valid,
6790 next_valid,
6791 exact_unclipped,
6792 column_overshoot_after_line_end,
6793 }
6794 }
6795}
6796
6797struct BlockLayout {
6798 id: BlockId,
6799 row: Option<DisplayRow>,
6800 element: AnyElement,
6801 available_space: Size<AvailableSpace>,
6802 style: BlockStyle,
6803}
6804
6805fn layout_line(
6806 row: DisplayRow,
6807 snapshot: &EditorSnapshot,
6808 style: &EditorStyle,
6809 text_width: Pixels,
6810 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
6811 cx: &mut WindowContext,
6812) -> LineWithInvisibles {
6813 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
6814 LineWithInvisibles::from_chunks(
6815 chunks,
6816 &style,
6817 MAX_LINE_LEN,
6818 1,
6819 snapshot.mode,
6820 text_width,
6821 is_row_soft_wrapped,
6822 cx,
6823 )
6824 .pop()
6825 .unwrap()
6826}
6827
6828#[derive(Debug)]
6829pub struct IndentGuideLayout {
6830 origin: gpui::Point<Pixels>,
6831 length: Pixels,
6832 single_indent_width: Pixels,
6833 depth: u32,
6834 active: bool,
6835 settings: IndentGuideSettings,
6836}
6837
6838pub struct CursorLayout {
6839 origin: gpui::Point<Pixels>,
6840 block_width: Pixels,
6841 line_height: Pixels,
6842 color: Hsla,
6843 shape: CursorShape,
6844 block_text: Option<ShapedLine>,
6845 cursor_name: Option<AnyElement>,
6846}
6847
6848#[derive(Debug)]
6849pub struct CursorName {
6850 string: SharedString,
6851 color: Hsla,
6852 is_top_row: bool,
6853}
6854
6855impl CursorLayout {
6856 pub fn new(
6857 origin: gpui::Point<Pixels>,
6858 block_width: Pixels,
6859 line_height: Pixels,
6860 color: Hsla,
6861 shape: CursorShape,
6862 block_text: Option<ShapedLine>,
6863 ) -> CursorLayout {
6864 CursorLayout {
6865 origin,
6866 block_width,
6867 line_height,
6868 color,
6869 shape,
6870 block_text,
6871 cursor_name: None,
6872 }
6873 }
6874
6875 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6876 Bounds {
6877 origin: self.origin + origin,
6878 size: size(self.block_width, self.line_height),
6879 }
6880 }
6881
6882 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6883 match self.shape {
6884 CursorShape::Bar => Bounds {
6885 origin: self.origin + origin,
6886 size: size(px(2.0), self.line_height),
6887 },
6888 CursorShape::Block | CursorShape::Hollow => Bounds {
6889 origin: self.origin + origin,
6890 size: size(self.block_width, self.line_height),
6891 },
6892 CursorShape::Underline => Bounds {
6893 origin: self.origin
6894 + origin
6895 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
6896 size: size(self.block_width, px(2.0)),
6897 },
6898 }
6899 }
6900
6901 pub fn layout(
6902 &mut self,
6903 origin: gpui::Point<Pixels>,
6904 cursor_name: Option<CursorName>,
6905 cx: &mut WindowContext,
6906 ) {
6907 if let Some(cursor_name) = cursor_name {
6908 let bounds = self.bounds(origin);
6909 let text_size = self.line_height / 1.5;
6910
6911 let name_origin = if cursor_name.is_top_row {
6912 point(bounds.right() - px(1.), bounds.top())
6913 } else {
6914 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
6915 };
6916 let mut name_element = div()
6917 .bg(self.color)
6918 .text_size(text_size)
6919 .px_0p5()
6920 .line_height(text_size + px(2.))
6921 .text_color(cursor_name.color)
6922 .child(cursor_name.string.clone())
6923 .into_any_element();
6924
6925 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
6926
6927 self.cursor_name = Some(name_element);
6928 }
6929 }
6930
6931 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
6932 let bounds = self.bounds(origin);
6933
6934 //Draw background or border quad
6935 let cursor = if matches!(self.shape, CursorShape::Hollow) {
6936 outline(bounds, self.color)
6937 } else {
6938 fill(bounds, self.color)
6939 };
6940
6941 if let Some(name) = &mut self.cursor_name {
6942 name.paint(cx);
6943 }
6944
6945 cx.paint_quad(cursor);
6946
6947 if let Some(block_text) = &self.block_text {
6948 block_text
6949 .paint(self.origin + origin, self.line_height, cx)
6950 .log_err();
6951 }
6952 }
6953
6954 pub fn shape(&self) -> CursorShape {
6955 self.shape
6956 }
6957}
6958
6959#[derive(Debug)]
6960pub struct HighlightedRange {
6961 pub start_y: Pixels,
6962 pub line_height: Pixels,
6963 pub lines: Vec<HighlightedRangeLine>,
6964 pub color: Hsla,
6965 pub corner_radius: Pixels,
6966}
6967
6968#[derive(Debug)]
6969pub struct HighlightedRangeLine {
6970 pub start_x: Pixels,
6971 pub end_x: Pixels,
6972}
6973
6974impl HighlightedRange {
6975 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
6976 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
6977 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
6978 self.paint_lines(
6979 self.start_y + self.line_height,
6980 &self.lines[1..],
6981 bounds,
6982 cx,
6983 );
6984 } else {
6985 self.paint_lines(self.start_y, &self.lines, bounds, cx);
6986 }
6987 }
6988
6989 fn paint_lines(
6990 &self,
6991 start_y: Pixels,
6992 lines: &[HighlightedRangeLine],
6993 _bounds: Bounds<Pixels>,
6994 cx: &mut WindowContext,
6995 ) {
6996 if lines.is_empty() {
6997 return;
6998 }
6999
7000 let first_line = lines.first().unwrap();
7001 let last_line = lines.last().unwrap();
7002
7003 let first_top_left = point(first_line.start_x, start_y);
7004 let first_top_right = point(first_line.end_x, start_y);
7005
7006 let curve_height = point(Pixels::ZERO, self.corner_radius);
7007 let curve_width = |start_x: Pixels, end_x: Pixels| {
7008 let max = (end_x - start_x) / 2.;
7009 let width = if max < self.corner_radius {
7010 max
7011 } else {
7012 self.corner_radius
7013 };
7014
7015 point(width, Pixels::ZERO)
7016 };
7017
7018 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
7019 let mut path = gpui::Path::new(first_top_right - top_curve_width);
7020 path.curve_to(first_top_right + curve_height, first_top_right);
7021
7022 let mut iter = lines.iter().enumerate().peekable();
7023 while let Some((ix, line)) = iter.next() {
7024 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
7025
7026 if let Some((_, next_line)) = iter.peek() {
7027 let next_top_right = point(next_line.end_x, bottom_right.y);
7028
7029 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
7030 Ordering::Equal => {
7031 path.line_to(bottom_right);
7032 }
7033 Ordering::Less => {
7034 let curve_width = curve_width(next_top_right.x, bottom_right.x);
7035 path.line_to(bottom_right - curve_height);
7036 if self.corner_radius > Pixels::ZERO {
7037 path.curve_to(bottom_right - curve_width, bottom_right);
7038 }
7039 path.line_to(next_top_right + curve_width);
7040 if self.corner_radius > Pixels::ZERO {
7041 path.curve_to(next_top_right + curve_height, next_top_right);
7042 }
7043 }
7044 Ordering::Greater => {
7045 let curve_width = curve_width(bottom_right.x, next_top_right.x);
7046 path.line_to(bottom_right - curve_height);
7047 if self.corner_radius > Pixels::ZERO {
7048 path.curve_to(bottom_right + curve_width, bottom_right);
7049 }
7050 path.line_to(next_top_right - curve_width);
7051 if self.corner_radius > Pixels::ZERO {
7052 path.curve_to(next_top_right + curve_height, next_top_right);
7053 }
7054 }
7055 }
7056 } else {
7057 let curve_width = curve_width(line.start_x, line.end_x);
7058 path.line_to(bottom_right - curve_height);
7059 if self.corner_radius > Pixels::ZERO {
7060 path.curve_to(bottom_right - curve_width, bottom_right);
7061 }
7062
7063 let bottom_left = point(line.start_x, bottom_right.y);
7064 path.line_to(bottom_left + curve_width);
7065 if self.corner_radius > Pixels::ZERO {
7066 path.curve_to(bottom_left - curve_height, bottom_left);
7067 }
7068 }
7069 }
7070
7071 if first_line.start_x > last_line.start_x {
7072 let curve_width = curve_width(last_line.start_x, first_line.start_x);
7073 let second_top_left = point(last_line.start_x, start_y + self.line_height);
7074 path.line_to(second_top_left + curve_height);
7075 if self.corner_radius > Pixels::ZERO {
7076 path.curve_to(second_top_left + curve_width, second_top_left);
7077 }
7078 let first_bottom_left = point(first_line.start_x, second_top_left.y);
7079 path.line_to(first_bottom_left - curve_width);
7080 if self.corner_radius > Pixels::ZERO {
7081 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
7082 }
7083 }
7084
7085 path.line_to(first_top_left + curve_height);
7086 if self.corner_radius > Pixels::ZERO {
7087 path.curve_to(first_top_left + top_curve_width, first_top_left);
7088 }
7089 path.line_to(first_top_right - top_curve_width);
7090
7091 cx.paint_path(path, self.color);
7092 }
7093}
7094
7095pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7096 (delta.pow(1.5) / 100.0).into()
7097}
7098
7099fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7100 (delta.pow(1.2) / 300.0).into()
7101}
7102
7103pub fn register_action<T: Action>(
7104 view: &View<Editor>,
7105 cx: &mut WindowContext,
7106 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
7107) {
7108 let view = view.clone();
7109 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
7110 let action = action.downcast_ref().unwrap();
7111 if phase == DispatchPhase::Bubble {
7112 view.update(cx, |editor, cx| {
7113 listener(editor, action, cx);
7114 })
7115 }
7116 })
7117}
7118
7119fn compute_auto_height_layout(
7120 editor: &mut Editor,
7121 max_lines: usize,
7122 max_line_number_width: Pixels,
7123 known_dimensions: Size<Option<Pixels>>,
7124 available_width: AvailableSpace,
7125 cx: &mut ViewContext<Editor>,
7126) -> Option<Size<Pixels>> {
7127 let width = known_dimensions.width.or({
7128 if let AvailableSpace::Definite(available_width) = available_width {
7129 Some(available_width)
7130 } else {
7131 None
7132 }
7133 })?;
7134 if let Some(height) = known_dimensions.height {
7135 return Some(size(width, height));
7136 }
7137
7138 let style = editor.style.as_ref().unwrap();
7139 let font_id = cx.text_system().resolve_font(&style.text.font());
7140 let font_size = style.text.font_size.to_pixels(cx.rem_size());
7141 let line_height = style.text.line_height_in_pixels(cx.rem_size());
7142 let em_width = cx
7143 .text_system()
7144 .typographic_bounds(font_id, font_size, 'm')
7145 .unwrap()
7146 .size
7147 .width;
7148 let em_advance = cx
7149 .text_system()
7150 .advance(font_id, font_size, 'm')
7151 .unwrap()
7152 .width;
7153
7154 let mut snapshot = editor.snapshot(cx);
7155 let gutter_dimensions = snapshot.gutter_dimensions(
7156 font_id,
7157 font_size,
7158 em_width,
7159 em_advance,
7160 max_line_number_width,
7161 cx,
7162 );
7163
7164 editor.gutter_dimensions = gutter_dimensions;
7165 let text_width = width - gutter_dimensions.width;
7166 let overscroll = size(em_width, px(0.));
7167
7168 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
7169 if editor.set_wrap_width(Some(editor_width), cx) {
7170 snapshot = editor.snapshot(cx);
7171 }
7172
7173 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
7174 let height = scroll_height
7175 .max(line_height)
7176 .min(line_height * max_lines as f32);
7177
7178 Some(size(width, height))
7179}
7180
7181#[cfg(test)]
7182mod tests {
7183 use super::*;
7184 use crate::{
7185 display_map::{BlockPlacement, BlockProperties},
7186 editor_tests::{init_test, update_test_language_settings},
7187 Editor, MultiBuffer,
7188 };
7189 use gpui::{TestAppContext, VisualTestContext};
7190 use language::language_settings;
7191 use log::info;
7192 use std::num::NonZeroU32;
7193 use util::test::sample_text;
7194
7195 #[gpui::test]
7196 fn test_shape_line_numbers(cx: &mut TestAppContext) {
7197 init_test(cx, |_| {});
7198 let window = cx.add_window(|cx| {
7199 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
7200 Editor::new(EditorMode::Full, buffer, None, true, cx)
7201 });
7202
7203 let editor = window.root(cx).unwrap();
7204 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7205 let element = EditorElement::new(&editor, style);
7206 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
7207
7208 let layouts = cx
7209 .update_window(*window, |_, cx| {
7210 element.layout_line_numbers(
7211 DisplayRow(0)..DisplayRow(6),
7212 (0..6).map(MultiBufferRow).map(Some),
7213 &Default::default(),
7214 Some(DisplayPoint::new(DisplayRow(0), 0)),
7215 &snapshot,
7216 cx,
7217 )
7218 })
7219 .unwrap();
7220 assert_eq!(layouts.len(), 6);
7221
7222 let relative_rows = window
7223 .update(cx, |editor, cx| {
7224 let snapshot = editor.snapshot(cx);
7225 element.calculate_relative_line_numbers(
7226 &snapshot,
7227 &(DisplayRow(0)..DisplayRow(6)),
7228 Some(DisplayRow(3)),
7229 )
7230 })
7231 .unwrap();
7232 assert_eq!(relative_rows[&DisplayRow(0)], 3);
7233 assert_eq!(relative_rows[&DisplayRow(1)], 2);
7234 assert_eq!(relative_rows[&DisplayRow(2)], 1);
7235 // current line has no relative number
7236 assert_eq!(relative_rows[&DisplayRow(4)], 1);
7237 assert_eq!(relative_rows[&DisplayRow(5)], 2);
7238
7239 // works if cursor is before screen
7240 let relative_rows = window
7241 .update(cx, |editor, cx| {
7242 let snapshot = editor.snapshot(cx);
7243 element.calculate_relative_line_numbers(
7244 &snapshot,
7245 &(DisplayRow(3)..DisplayRow(6)),
7246 Some(DisplayRow(1)),
7247 )
7248 })
7249 .unwrap();
7250 assert_eq!(relative_rows.len(), 3);
7251 assert_eq!(relative_rows[&DisplayRow(3)], 2);
7252 assert_eq!(relative_rows[&DisplayRow(4)], 3);
7253 assert_eq!(relative_rows[&DisplayRow(5)], 4);
7254
7255 // works if cursor is after screen
7256 let relative_rows = window
7257 .update(cx, |editor, cx| {
7258 let snapshot = editor.snapshot(cx);
7259 element.calculate_relative_line_numbers(
7260 &snapshot,
7261 &(DisplayRow(0)..DisplayRow(3)),
7262 Some(DisplayRow(6)),
7263 )
7264 })
7265 .unwrap();
7266 assert_eq!(relative_rows.len(), 3);
7267 assert_eq!(relative_rows[&DisplayRow(0)], 5);
7268 assert_eq!(relative_rows[&DisplayRow(1)], 4);
7269 assert_eq!(relative_rows[&DisplayRow(2)], 3);
7270 }
7271
7272 #[gpui::test]
7273 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
7274 init_test(cx, |_| {});
7275
7276 let window = cx.add_window(|cx| {
7277 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
7278 Editor::new(EditorMode::Full, buffer, None, true, cx)
7279 });
7280 let cx = &mut VisualTestContext::from_window(*window, cx);
7281 let editor = window.root(cx).unwrap();
7282 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7283
7284 window
7285 .update(cx, |editor, cx| {
7286 editor.cursor_shape = CursorShape::Block;
7287 editor.change_selections(None, cx, |s| {
7288 s.select_ranges([
7289 Point::new(0, 0)..Point::new(1, 0),
7290 Point::new(3, 2)..Point::new(3, 3),
7291 Point::new(5, 6)..Point::new(6, 0),
7292 ]);
7293 });
7294 })
7295 .unwrap();
7296
7297 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7298 EditorElement::new(&editor, style)
7299 });
7300
7301 assert_eq!(state.selections.len(), 1);
7302 let local_selections = &state.selections[0].1;
7303 assert_eq!(local_selections.len(), 3);
7304 // moves cursor back one line
7305 assert_eq!(
7306 local_selections[0].head,
7307 DisplayPoint::new(DisplayRow(0), 6)
7308 );
7309 assert_eq!(
7310 local_selections[0].range,
7311 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
7312 );
7313
7314 // moves cursor back one column
7315 assert_eq!(
7316 local_selections[1].range,
7317 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
7318 );
7319 assert_eq!(
7320 local_selections[1].head,
7321 DisplayPoint::new(DisplayRow(3), 2)
7322 );
7323
7324 // leaves cursor on the max point
7325 assert_eq!(
7326 local_selections[2].range,
7327 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
7328 );
7329 assert_eq!(
7330 local_selections[2].head,
7331 DisplayPoint::new(DisplayRow(6), 0)
7332 );
7333
7334 // active lines does not include 1 (even though the range of the selection does)
7335 assert_eq!(
7336 state.active_rows.keys().cloned().collect::<Vec<_>>(),
7337 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
7338 );
7339
7340 // multi-buffer support
7341 // in DisplayPoint coordinates, this is what we're dealing with:
7342 // 0: [[file
7343 // 1: header
7344 // 2: section]]
7345 // 3: aaaaaa
7346 // 4: bbbbbb
7347 // 5: cccccc
7348 // 6:
7349 // 7: [[footer]]
7350 // 8: [[header]]
7351 // 9: ffffff
7352 // 10: gggggg
7353 // 11: hhhhhh
7354 // 12:
7355 // 13: [[footer]]
7356 // 14: [[file
7357 // 15: header
7358 // 16: section]]
7359 // 17: bbbbbb
7360 // 18: cccccc
7361 // 19: dddddd
7362 // 20: [[footer]]
7363 let window = cx.add_window(|cx| {
7364 let buffer = MultiBuffer::build_multi(
7365 [
7366 (
7367 &(sample_text(8, 6, 'a') + "\n"),
7368 vec![
7369 Point::new(0, 0)..Point::new(3, 0),
7370 Point::new(4, 0)..Point::new(7, 0),
7371 ],
7372 ),
7373 (
7374 &(sample_text(8, 6, 'a') + "\n"),
7375 vec![Point::new(1, 0)..Point::new(3, 0)],
7376 ),
7377 ],
7378 cx,
7379 );
7380 Editor::new(EditorMode::Full, buffer, None, true, cx)
7381 });
7382 let editor = window.root(cx).unwrap();
7383 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7384 let _state = window.update(cx, |editor, cx| {
7385 editor.cursor_shape = CursorShape::Block;
7386 editor.change_selections(None, cx, |s| {
7387 s.select_display_ranges([
7388 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
7389 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
7390 ]);
7391 });
7392 });
7393
7394 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7395 EditorElement::new(&editor, style)
7396 });
7397 assert_eq!(state.selections.len(), 1);
7398 let local_selections = &state.selections[0].1;
7399 assert_eq!(local_selections.len(), 2);
7400
7401 // moves cursor on excerpt boundary back a line
7402 // and doesn't allow selection to bleed through
7403 assert_eq!(
7404 local_selections[0].range,
7405 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
7406 );
7407 assert_eq!(
7408 local_selections[0].head,
7409 DisplayPoint::new(DisplayRow(6), 0)
7410 );
7411 // moves cursor on buffer boundary back two lines
7412 // and doesn't allow selection to bleed through
7413 assert_eq!(
7414 local_selections[1].range,
7415 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
7416 );
7417 assert_eq!(
7418 local_selections[1].head,
7419 DisplayPoint::new(DisplayRow(12), 0)
7420 );
7421 }
7422
7423 #[gpui::test]
7424 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
7425 init_test(cx, |_| {});
7426
7427 let window = cx.add_window(|cx| {
7428 let buffer = MultiBuffer::build_simple("", cx);
7429 Editor::new(EditorMode::Full, buffer, None, true, cx)
7430 });
7431 let cx = &mut VisualTestContext::from_window(*window, cx);
7432 let editor = window.root(cx).unwrap();
7433 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7434 window
7435 .update(cx, |editor, cx| {
7436 editor.set_placeholder_text("hello", cx);
7437 editor.insert_blocks(
7438 [BlockProperties {
7439 style: BlockStyle::Fixed,
7440 placement: BlockPlacement::Above(Anchor::min()),
7441 height: 3,
7442 render: Arc::new(|cx| div().h(3. * cx.line_height()).into_any()),
7443 priority: 0,
7444 }],
7445 None,
7446 cx,
7447 );
7448
7449 // Blur the editor so that it displays placeholder text.
7450 cx.blur();
7451 })
7452 .unwrap();
7453
7454 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7455 EditorElement::new(&editor, style)
7456 });
7457 assert_eq!(state.position_map.line_layouts.len(), 4);
7458 assert_eq!(
7459 state
7460 .line_numbers
7461 .iter()
7462 .map(Option::is_some)
7463 .collect::<Vec<_>>(),
7464 &[false, false, false, true]
7465 );
7466 }
7467
7468 #[gpui::test]
7469 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
7470 const TAB_SIZE: u32 = 4;
7471
7472 let input_text = "\t \t|\t| a b";
7473 let expected_invisibles = vec![
7474 Invisible::Tab {
7475 line_start_offset: 0,
7476 line_end_offset: TAB_SIZE as usize,
7477 },
7478 Invisible::Whitespace {
7479 line_offset: TAB_SIZE as usize,
7480 },
7481 Invisible::Tab {
7482 line_start_offset: TAB_SIZE as usize + 1,
7483 line_end_offset: TAB_SIZE as usize * 2,
7484 },
7485 Invisible::Tab {
7486 line_start_offset: TAB_SIZE as usize * 2 + 1,
7487 line_end_offset: TAB_SIZE as usize * 3,
7488 },
7489 Invisible::Whitespace {
7490 line_offset: TAB_SIZE as usize * 3 + 1,
7491 },
7492 Invisible::Whitespace {
7493 line_offset: TAB_SIZE as usize * 3 + 3,
7494 },
7495 ];
7496 assert_eq!(
7497 expected_invisibles.len(),
7498 input_text
7499 .chars()
7500 .filter(|initial_char| initial_char.is_whitespace())
7501 .count(),
7502 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
7503 );
7504
7505 for show_line_numbers in [true, false] {
7506 init_test(cx, |s| {
7507 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7508 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
7509 });
7510
7511 let actual_invisibles = collect_invisibles_from_new_editor(
7512 cx,
7513 EditorMode::Full,
7514 input_text,
7515 px(500.0),
7516 show_line_numbers,
7517 );
7518
7519 assert_eq!(expected_invisibles, actual_invisibles);
7520 }
7521 }
7522
7523 #[gpui::test]
7524 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
7525 init_test(cx, |s| {
7526 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7527 s.defaults.tab_size = NonZeroU32::new(4);
7528 });
7529
7530 for editor_mode_without_invisibles in [
7531 EditorMode::SingleLine { auto_width: false },
7532 EditorMode::AutoHeight { max_lines: 100 },
7533 ] {
7534 for show_line_numbers in [true, false] {
7535 let invisibles = collect_invisibles_from_new_editor(
7536 cx,
7537 editor_mode_without_invisibles,
7538 "\t\t\t| | a b",
7539 px(500.0),
7540 show_line_numbers,
7541 );
7542 assert!(invisibles.is_empty(),
7543 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
7544 }
7545 }
7546 }
7547
7548 #[gpui::test]
7549 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
7550 let tab_size = 4;
7551 let input_text = "a\tbcd ".repeat(9);
7552 let repeated_invisibles = [
7553 Invisible::Tab {
7554 line_start_offset: 1,
7555 line_end_offset: tab_size as usize,
7556 },
7557 Invisible::Whitespace {
7558 line_offset: tab_size as usize + 3,
7559 },
7560 Invisible::Whitespace {
7561 line_offset: tab_size as usize + 4,
7562 },
7563 Invisible::Whitespace {
7564 line_offset: tab_size as usize + 5,
7565 },
7566 Invisible::Whitespace {
7567 line_offset: tab_size as usize + 6,
7568 },
7569 Invisible::Whitespace {
7570 line_offset: tab_size as usize + 7,
7571 },
7572 ];
7573 let expected_invisibles = std::iter::once(repeated_invisibles)
7574 .cycle()
7575 .take(9)
7576 .flatten()
7577 .collect::<Vec<_>>();
7578 assert_eq!(
7579 expected_invisibles.len(),
7580 input_text
7581 .chars()
7582 .filter(|initial_char| initial_char.is_whitespace())
7583 .count(),
7584 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
7585 );
7586 info!("Expected invisibles: {expected_invisibles:?}");
7587
7588 init_test(cx, |_| {});
7589
7590 // Put the same string with repeating whitespace pattern into editors of various size,
7591 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
7592 let resize_step = 10.0;
7593 let mut editor_width = 200.0;
7594 while editor_width <= 1000.0 {
7595 for show_line_numbers in [true, false] {
7596 update_test_language_settings(cx, |s| {
7597 s.defaults.tab_size = NonZeroU32::new(tab_size);
7598 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7599 s.defaults.preferred_line_length = Some(editor_width as u32);
7600 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
7601 });
7602
7603 let actual_invisibles = collect_invisibles_from_new_editor(
7604 cx,
7605 EditorMode::Full,
7606 &input_text,
7607 px(editor_width),
7608 show_line_numbers,
7609 );
7610
7611 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
7612 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
7613 let mut i = 0;
7614 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
7615 i = actual_index;
7616 match expected_invisibles.get(i) {
7617 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
7618 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
7619 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
7620 _ => {
7621 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
7622 }
7623 },
7624 None => {
7625 panic!("Unexpected extra invisible {actual_invisible:?} at index {i}")
7626 }
7627 }
7628 }
7629 let missing_expected_invisibles = &expected_invisibles[i + 1..];
7630 assert!(
7631 missing_expected_invisibles.is_empty(),
7632 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
7633 );
7634
7635 editor_width += resize_step;
7636 }
7637 }
7638 }
7639
7640 fn collect_invisibles_from_new_editor(
7641 cx: &mut TestAppContext,
7642 editor_mode: EditorMode,
7643 input_text: &str,
7644 editor_width: Pixels,
7645 show_line_numbers: bool,
7646 ) -> Vec<Invisible> {
7647 info!(
7648 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
7649 editor_width.0
7650 );
7651 let window = cx.add_window(|cx| {
7652 let buffer = MultiBuffer::build_simple(input_text, cx);
7653 Editor::new(editor_mode, buffer, None, true, cx)
7654 });
7655 let cx = &mut VisualTestContext::from_window(*window, cx);
7656 let editor = window.root(cx).unwrap();
7657
7658 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7659 window
7660 .update(cx, |editor, cx| {
7661 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
7662 editor.set_wrap_width(Some(editor_width), cx);
7663 editor.set_show_line_numbers(show_line_numbers, cx);
7664 })
7665 .unwrap();
7666 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7667 EditorElement::new(&editor, style)
7668 });
7669 state
7670 .position_map
7671 .line_layouts
7672 .iter()
7673 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
7674 .cloned()
7675 .collect()
7676 }
7677}