1use crate::{
2 blame_entry_tooltip::{blame_entry_relative_timestamp, BlameEntryTooltip},
3 display_map::{
4 Block, BlockContext, BlockStyle, DisplaySnapshot, HighlightedChunk, ToDisplayPoint,
5 },
6 editor_settings::{
7 CurrentLineHighlight, DoubleClickInMultibuffer, MultiCursorModifier, ScrollBeyondLastLine,
8 ShowScrollbar,
9 },
10 git::blame::{CommitDetails, GitBlame},
11 hover_popover::{
12 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
13 },
14 hunk_diff::{diff_hunk_to_display, DisplayDiffHunk},
15 hunk_status,
16 items::BufferSearchHighlights,
17 mouse_context_menu::{self, MenuPosition, MouseContextMenu},
18 scroll::scroll_amount::ScrollAmount,
19 BlockId, CodeActionsMenu, CursorShape, CustomBlockId, DisplayPoint, DisplayRow,
20 DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode, EditorSettings,
21 EditorSnapshot, EditorStyle, ExpandExcerpts, FocusedBlock, GutterDimensions, HalfPageDown,
22 HalfPageUp, HandleInput, HoveredCursor, HoveredHunk, LineDown, LineUp, OpenExcerpts, PageDown,
23 PageUp, Point, RowExt, RowRangeExt, SelectPhase, Selection, SoftWrap, ToPoint,
24 CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
25};
26use client::ParticipantIndex;
27use collections::{BTreeMap, HashMap};
28use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
29use gpui::Subscription;
30use gpui::{
31 anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
32 transparent_black, Action, AnchorCorner, AnyElement, AvailableSpace, Bounds, ClipboardItem,
33 ContentMask, Corners, CursorStyle, DispatchPhase, Edges, Element, ElementInputHandler, Entity,
34 EntityId, FontId, GlobalElementId, Hitbox, Hsla, InteractiveElement, IntoElement, Length,
35 ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad,
36 ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size,
37 StatefulInteractiveElement, Style, Styled, TextRun, TextStyle, TextStyleRefinement, View,
38 ViewContext, WeakView, WindowContext,
39};
40use itertools::Itertools;
41use language::{
42 language_settings::{
43 IndentGuideBackgroundColoring, IndentGuideColoring, IndentGuideSettings,
44 ShowWhitespaceSetting,
45 },
46 ChunkRendererContext,
47};
48use lsp::DiagnosticSeverity;
49use multi_buffer::{Anchor, MultiBufferPoint, MultiBufferRow};
50use project::{
51 project_settings::{GitGutterSetting, ProjectSettings},
52 ProjectPath,
53};
54use settings::Settings;
55use smallvec::{smallvec, SmallVec};
56use std::{
57 any::TypeId,
58 borrow::Cow,
59 cmp::{self, Ordering},
60 fmt::{self, Write},
61 iter, mem,
62 ops::{Deref, Range},
63 rc::Rc,
64 sync::Arc,
65};
66use sum_tree::Bias;
67use theme::{ActiveTheme, PlayerColor};
68use ui::prelude::*;
69use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
70use util::RangeExt;
71use util::ResultExt;
72use workspace::{item::Item, Workspace};
73
74struct SelectionLayout {
75 head: DisplayPoint,
76 cursor_shape: CursorShape,
77 is_newest: bool,
78 is_local: bool,
79 range: Range<DisplayPoint>,
80 active_rows: Range<DisplayRow>,
81 user_name: Option<SharedString>,
82}
83
84impl SelectionLayout {
85 fn new<T: ToPoint + ToDisplayPoint + Clone>(
86 selection: Selection<T>,
87 line_mode: bool,
88 cursor_shape: CursorShape,
89 map: &DisplaySnapshot,
90 is_newest: bool,
91 is_local: bool,
92 user_name: Option<SharedString>,
93 ) -> Self {
94 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
95 let display_selection = point_selection.map(|p| p.to_display_point(map));
96 let mut range = display_selection.range();
97 let mut head = display_selection.head();
98 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
99 ..map.next_line_boundary(point_selection.end).1.row();
100
101 // vim visual line mode
102 if line_mode {
103 let point_range = map.expand_to_line(point_selection.range());
104 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
105 }
106
107 // any vim visual mode (including line mode)
108 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
109 && !range.is_empty()
110 && !selection.reversed
111 {
112 if head.column() > 0 {
113 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
114 } else if head.row().0 > 0 && head != map.max_point() {
115 head = map.clip_point(
116 DisplayPoint::new(
117 head.row().previous_row(),
118 map.line_len(head.row().previous_row()),
119 ),
120 Bias::Left,
121 );
122 // updating range.end is a no-op unless you're cursor is
123 // on the newline containing a multi-buffer divider
124 // in which case the clip_point may have moved the head up
125 // an additional row.
126 range.end = DisplayPoint::new(head.row().next_row(), 0);
127 active_rows.end = head.row();
128 }
129 }
130
131 Self {
132 head,
133 cursor_shape,
134 is_newest,
135 is_local,
136 range,
137 active_rows,
138 user_name,
139 }
140 }
141}
142
143pub struct EditorElement {
144 editor: View<Editor>,
145 style: EditorStyle,
146}
147
148type DisplayRowDelta = u32;
149
150impl EditorElement {
151 pub(crate) const SCROLLBAR_WIDTH: Pixels = px(13.);
152
153 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
154 Self {
155 editor: editor.clone(),
156 style,
157 }
158 }
159
160 fn register_actions(&self, cx: &mut WindowContext) {
161 let view = &self.editor;
162 view.update(cx, |editor, cx| {
163 for action in editor.editor_actions.borrow().values() {
164 (action)(cx)
165 }
166 });
167
168 crate::rust_analyzer_ext::apply_related_actions(view, cx);
169 crate::clangd_ext::apply_related_actions(view, cx);
170 register_action(view, cx, Editor::move_left);
171 register_action(view, cx, Editor::move_right);
172 register_action(view, cx, Editor::move_down);
173 register_action(view, cx, Editor::move_down_by_lines);
174 register_action(view, cx, Editor::select_down_by_lines);
175 register_action(view, cx, Editor::move_up);
176 register_action(view, cx, Editor::move_up_by_lines);
177 register_action(view, cx, Editor::select_up_by_lines);
178 register_action(view, cx, Editor::select_page_down);
179 register_action(view, cx, Editor::select_page_up);
180 register_action(view, cx, Editor::cancel);
181 register_action(view, cx, Editor::newline);
182 register_action(view, cx, Editor::newline_above);
183 register_action(view, cx, Editor::newline_below);
184 register_action(view, cx, Editor::backspace);
185 register_action(view, cx, Editor::delete);
186 register_action(view, cx, Editor::tab);
187 register_action(view, cx, Editor::tab_prev);
188 register_action(view, cx, Editor::indent);
189 register_action(view, cx, Editor::outdent);
190 register_action(view, cx, Editor::delete_line);
191 register_action(view, cx, Editor::join_lines);
192 register_action(view, cx, Editor::sort_lines_case_sensitive);
193 register_action(view, cx, Editor::sort_lines_case_insensitive);
194 register_action(view, cx, Editor::reverse_lines);
195 register_action(view, cx, Editor::shuffle_lines);
196 register_action(view, cx, Editor::convert_to_upper_case);
197 register_action(view, cx, Editor::convert_to_lower_case);
198 register_action(view, cx, Editor::convert_to_title_case);
199 register_action(view, cx, Editor::convert_to_snake_case);
200 register_action(view, cx, Editor::convert_to_kebab_case);
201 register_action(view, cx, Editor::convert_to_upper_camel_case);
202 register_action(view, cx, Editor::convert_to_lower_camel_case);
203 register_action(view, cx, Editor::convert_to_opposite_case);
204 register_action(view, cx, Editor::delete_to_previous_word_start);
205 register_action(view, cx, Editor::delete_to_previous_subword_start);
206 register_action(view, cx, Editor::delete_to_next_word_end);
207 register_action(view, cx, Editor::delete_to_next_subword_end);
208 register_action(view, cx, Editor::delete_to_beginning_of_line);
209 register_action(view, cx, Editor::delete_to_end_of_line);
210 register_action(view, cx, Editor::cut_to_end_of_line);
211 register_action(view, cx, Editor::duplicate_line_up);
212 register_action(view, cx, Editor::duplicate_line_down);
213 register_action(view, cx, Editor::move_line_up);
214 register_action(view, cx, Editor::move_line_down);
215 register_action(view, cx, Editor::transpose);
216 register_action(view, cx, Editor::rewrap);
217 register_action(view, cx, Editor::cut);
218 register_action(view, cx, Editor::copy);
219 register_action(view, cx, Editor::paste);
220 register_action(view, cx, Editor::undo);
221 register_action(view, cx, Editor::redo);
222 register_action(view, cx, Editor::move_page_up);
223 register_action(view, cx, Editor::move_page_down);
224 register_action(view, cx, Editor::next_screen);
225 register_action(view, cx, Editor::scroll_cursor_top);
226 register_action(view, cx, Editor::scroll_cursor_center);
227 register_action(view, cx, Editor::scroll_cursor_bottom);
228 register_action(view, cx, Editor::scroll_cursor_center_top_bottom);
229 register_action(view, cx, |editor, _: &LineDown, cx| {
230 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
231 });
232 register_action(view, cx, |editor, _: &LineUp, cx| {
233 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
234 });
235 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
236 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
237 });
238 register_action(view, cx, |editor, HandleInput(text): &HandleInput, cx| {
239 if text.is_empty() {
240 return;
241 }
242 editor.handle_input(text, cx);
243 });
244 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
245 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
246 });
247 register_action(view, cx, |editor, _: &PageDown, cx| {
248 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
249 });
250 register_action(view, cx, |editor, _: &PageUp, cx| {
251 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
252 });
253 register_action(view, cx, Editor::move_to_previous_word_start);
254 register_action(view, cx, Editor::move_to_previous_subword_start);
255 register_action(view, cx, Editor::move_to_next_word_end);
256 register_action(view, cx, Editor::move_to_next_subword_end);
257 register_action(view, cx, Editor::move_to_beginning_of_line);
258 register_action(view, cx, Editor::move_to_end_of_line);
259 register_action(view, cx, Editor::move_to_start_of_paragraph);
260 register_action(view, cx, Editor::move_to_end_of_paragraph);
261 register_action(view, cx, Editor::move_to_beginning);
262 register_action(view, cx, Editor::move_to_end);
263 register_action(view, cx, Editor::select_up);
264 register_action(view, cx, Editor::select_down);
265 register_action(view, cx, Editor::select_left);
266 register_action(view, cx, Editor::select_right);
267 register_action(view, cx, Editor::select_to_previous_word_start);
268 register_action(view, cx, Editor::select_to_previous_subword_start);
269 register_action(view, cx, Editor::select_to_next_word_end);
270 register_action(view, cx, Editor::select_to_next_subword_end);
271 register_action(view, cx, Editor::select_to_beginning_of_line);
272 register_action(view, cx, Editor::select_to_end_of_line);
273 register_action(view, cx, Editor::select_to_start_of_paragraph);
274 register_action(view, cx, Editor::select_to_end_of_paragraph);
275 register_action(view, cx, Editor::select_to_beginning);
276 register_action(view, cx, Editor::select_to_end);
277 register_action(view, cx, Editor::select_all);
278 register_action(view, cx, |editor, action, cx| {
279 editor.select_all_matches(action, cx).log_err();
280 });
281 register_action(view, cx, Editor::select_line);
282 register_action(view, cx, Editor::split_selection_into_lines);
283 register_action(view, cx, Editor::add_selection_above);
284 register_action(view, cx, Editor::add_selection_below);
285 register_action(view, cx, |editor, action, cx| {
286 editor.select_next(action, cx).log_err();
287 });
288 register_action(view, cx, |editor, action, cx| {
289 editor.select_previous(action, cx).log_err();
290 });
291 register_action(view, cx, Editor::toggle_comments);
292 register_action(view, cx, Editor::select_larger_syntax_node);
293 register_action(view, cx, Editor::select_smaller_syntax_node);
294 register_action(view, cx, Editor::select_enclosing_symbol);
295 register_action(view, cx, Editor::move_to_enclosing_bracket);
296 register_action(view, cx, Editor::undo_selection);
297 register_action(view, cx, Editor::redo_selection);
298 if !view.read(cx).is_singleton(cx) {
299 register_action(view, cx, Editor::expand_excerpts);
300 register_action(view, cx, Editor::expand_excerpts_up);
301 register_action(view, cx, Editor::expand_excerpts_down);
302 }
303 register_action(view, cx, Editor::go_to_diagnostic);
304 register_action(view, cx, Editor::go_to_prev_diagnostic);
305 register_action(view, cx, Editor::go_to_next_hunk);
306 register_action(view, cx, Editor::go_to_prev_hunk);
307 register_action(view, cx, |editor, a, cx| {
308 editor.go_to_definition(a, cx).detach_and_log_err(cx);
309 });
310 register_action(view, cx, |editor, a, cx| {
311 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
312 });
313 register_action(view, cx, |editor, a, cx| {
314 editor.go_to_declaration(a, cx).detach_and_log_err(cx);
315 });
316 register_action(view, cx, |editor, a, cx| {
317 editor.go_to_declaration_split(a, cx).detach_and_log_err(cx);
318 });
319 register_action(view, cx, |editor, a, cx| {
320 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
321 });
322 register_action(view, cx, |editor, a, cx| {
323 editor
324 .go_to_implementation_split(a, cx)
325 .detach_and_log_err(cx);
326 });
327 register_action(view, cx, |editor, a, cx| {
328 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
329 });
330 register_action(view, cx, |editor, a, cx| {
331 editor
332 .go_to_type_definition_split(a, cx)
333 .detach_and_log_err(cx);
334 });
335 register_action(view, cx, Editor::open_url);
336 register_action(view, cx, Editor::open_file);
337 register_action(view, cx, Editor::fold);
338 register_action(view, cx, Editor::fold_at);
339 register_action(view, cx, Editor::unfold_lines);
340 register_action(view, cx, Editor::unfold_at);
341 register_action(view, cx, Editor::fold_selected_ranges);
342 register_action(view, cx, Editor::show_completions);
343 register_action(view, cx, Editor::toggle_code_actions);
344 register_action(view, cx, Editor::open_excerpts);
345 register_action(view, cx, Editor::open_excerpts_in_split);
346 register_action(view, cx, Editor::open_proposed_changes_editor);
347 register_action(view, cx, Editor::toggle_soft_wrap);
348 register_action(view, cx, Editor::toggle_tab_bar);
349 register_action(view, cx, Editor::toggle_line_numbers);
350 register_action(view, cx, Editor::toggle_relative_line_numbers);
351 register_action(view, cx, Editor::toggle_indent_guides);
352 register_action(view, cx, Editor::toggle_inlay_hints);
353 register_action(view, cx, Editor::toggle_inline_completions);
354 register_action(view, cx, hover_popover::hover);
355 register_action(view, cx, Editor::reveal_in_finder);
356 register_action(view, cx, Editor::copy_path);
357 register_action(view, cx, Editor::copy_relative_path);
358 register_action(view, cx, Editor::copy_highlight_json);
359 register_action(view, cx, Editor::copy_permalink_to_line);
360 register_action(view, cx, Editor::open_permalink_to_line);
361 register_action(view, cx, Editor::copy_file_location);
362 register_action(view, cx, Editor::toggle_git_blame);
363 register_action(view, cx, Editor::toggle_git_blame_inline);
364 register_action(view, cx, Editor::toggle_hunk_diff);
365 register_action(view, cx, Editor::expand_all_hunk_diffs);
366 register_action(view, cx, |editor, action, cx| {
367 if let Some(task) = editor.format(action, cx) {
368 task.detach_and_log_err(cx);
369 } else {
370 cx.propagate();
371 }
372 });
373 register_action(view, cx, Editor::restart_language_server);
374 register_action(view, cx, Editor::cancel_language_server_work);
375 register_action(view, cx, Editor::show_character_palette);
376 register_action(view, cx, |editor, action, cx| {
377 if let Some(task) = editor.confirm_completion(action, cx) {
378 task.detach_and_log_err(cx);
379 } else {
380 cx.propagate();
381 }
382 });
383 register_action(view, cx, |editor, action, cx| {
384 if let Some(task) = editor.compose_completion(action, cx) {
385 task.detach_and_log_err(cx);
386 } else {
387 cx.propagate();
388 }
389 });
390 register_action(view, cx, |editor, action, cx| {
391 if let Some(task) = editor.confirm_code_action(action, cx) {
392 task.detach_and_log_err(cx);
393 } else {
394 cx.propagate();
395 }
396 });
397 register_action(view, cx, |editor, action, cx| {
398 if let Some(task) = editor.rename(action, cx) {
399 task.detach_and_log_err(cx);
400 } else {
401 cx.propagate();
402 }
403 });
404 register_action(view, cx, |editor, action, cx| {
405 if let Some(task) = editor.confirm_rename(action, cx) {
406 task.detach_and_log_err(cx);
407 } else {
408 cx.propagate();
409 }
410 });
411 register_action(view, cx, |editor, action, cx| {
412 if let Some(task) = editor.find_all_references(action, cx) {
413 task.detach_and_log_err(cx);
414 } else {
415 cx.propagate();
416 }
417 });
418 register_action(view, cx, Editor::show_signature_help);
419 register_action(view, cx, Editor::next_inline_completion);
420 register_action(view, cx, Editor::previous_inline_completion);
421 register_action(view, cx, Editor::show_inline_completion);
422 register_action(view, cx, Editor::context_menu_first);
423 register_action(view, cx, Editor::context_menu_prev);
424 register_action(view, cx, Editor::context_menu_next);
425 register_action(view, cx, Editor::context_menu_last);
426 register_action(view, cx, Editor::display_cursor_names);
427 register_action(view, cx, Editor::unique_lines_case_insensitive);
428 register_action(view, cx, Editor::unique_lines_case_sensitive);
429 register_action(view, cx, Editor::accept_partial_inline_completion);
430 register_action(view, cx, Editor::accept_inline_completion);
431 register_action(view, cx, Editor::revert_file);
432 register_action(view, cx, Editor::revert_selected_hunks);
433 register_action(view, cx, Editor::open_active_item_in_terminal)
434 }
435
436 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
437 let position_map = layout.position_map.clone();
438 cx.on_key_event({
439 let editor = self.editor.clone();
440 let text_hitbox = layout.text_hitbox.clone();
441 move |event: &ModifiersChangedEvent, phase, cx| {
442 if phase != DispatchPhase::Bubble {
443 return;
444 }
445 editor.update(cx, |editor, cx| {
446 if editor.hover_state.focused(cx) {
447 return;
448 }
449 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
450 })
451 }
452 });
453 }
454
455 fn modifiers_changed(
456 editor: &mut Editor,
457 event: &ModifiersChangedEvent,
458 position_map: &PositionMap,
459 text_hitbox: &Hitbox,
460 cx: &mut ViewContext<Editor>,
461 ) {
462 let mouse_position = cx.mouse_position();
463 if !text_hitbox.is_hovered(cx) {
464 return;
465 }
466
467 editor.update_hovered_link(
468 position_map.point_for_position(text_hitbox.bounds, mouse_position),
469 &position_map.snapshot,
470 event.modifiers,
471 cx,
472 )
473 }
474
475 fn mouse_left_down(
476 editor: &mut Editor,
477 event: &MouseDownEvent,
478 hovered_hunk: Option<HoveredHunk>,
479 position_map: &PositionMap,
480 text_hitbox: &Hitbox,
481 gutter_hitbox: &Hitbox,
482 cx: &mut ViewContext<Editor>,
483 ) {
484 if cx.default_prevented() {
485 return;
486 }
487
488 let mut click_count = event.click_count;
489 let mut modifiers = event.modifiers;
490
491 if let Some(hovered_hunk) = hovered_hunk {
492 editor.toggle_hovered_hunk(&hovered_hunk, cx);
493 cx.notify();
494 return;
495 } else if gutter_hitbox.is_hovered(cx) {
496 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
497 } else if !text_hitbox.is_hovered(cx) {
498 return;
499 }
500
501 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
502 match EditorSettings::get_global(cx).double_click_in_multibuffer {
503 DoubleClickInMultibuffer::Select => {
504 // do nothing special on double click, all selection logic is below
505 }
506 DoubleClickInMultibuffer::Open => {
507 if modifiers.alt {
508 // if double click is made with alt, pretend it's a regular double click without opening and alt,
509 // and run the selection logic.
510 modifiers.alt = false;
511 } else {
512 // if double click is made without alt, open the corresponding excerp
513 editor.open_excerpts(&OpenExcerpts, cx);
514 return;
515 }
516 }
517 }
518 }
519
520 let point_for_position =
521 position_map.point_for_position(text_hitbox.bounds, event.position);
522 let position = point_for_position.previous_valid;
523 if modifiers.shift && modifiers.alt {
524 editor.select(
525 SelectPhase::BeginColumnar {
526 position,
527 reset: false,
528 goal_column: point_for_position.exact_unclipped.column(),
529 },
530 cx,
531 );
532 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
533 {
534 editor.select(
535 SelectPhase::Extend {
536 position,
537 click_count,
538 },
539 cx,
540 );
541 } else {
542 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
543 let multi_cursor_modifier = match multi_cursor_setting {
544 MultiCursorModifier::Alt => modifiers.alt,
545 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
546 };
547 editor.select(
548 SelectPhase::Begin {
549 position,
550 add: multi_cursor_modifier,
551 click_count,
552 },
553 cx,
554 );
555 }
556
557 cx.stop_propagation();
558 }
559
560 fn mouse_right_down(
561 editor: &mut Editor,
562 event: &MouseDownEvent,
563 position_map: &PositionMap,
564 text_hitbox: &Hitbox,
565 cx: &mut ViewContext<Editor>,
566 ) {
567 if !text_hitbox.is_hovered(cx) {
568 return;
569 }
570 let point_for_position =
571 position_map.point_for_position(text_hitbox.bounds, event.position);
572 mouse_context_menu::deploy_context_menu(
573 editor,
574 event.position,
575 point_for_position.previous_valid,
576 cx,
577 );
578 cx.stop_propagation();
579 }
580
581 fn mouse_middle_down(
582 editor: &mut Editor,
583 event: &MouseDownEvent,
584 position_map: &PositionMap,
585 text_hitbox: &Hitbox,
586 cx: &mut ViewContext<Editor>,
587 ) {
588 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
589 return;
590 }
591
592 let point_for_position =
593 position_map.point_for_position(text_hitbox.bounds, event.position);
594 let position = point_for_position.previous_valid;
595
596 editor.select(
597 SelectPhase::BeginColumnar {
598 position,
599 reset: true,
600 goal_column: point_for_position.exact_unclipped.column(),
601 },
602 cx,
603 );
604 }
605
606 fn mouse_up(
607 editor: &mut Editor,
608 event: &MouseUpEvent,
609 position_map: &PositionMap,
610 text_hitbox: &Hitbox,
611 cx: &mut ViewContext<Editor>,
612 ) {
613 let end_selection = editor.has_pending_selection();
614 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
615
616 if end_selection {
617 editor.select(SelectPhase::End, cx);
618 }
619
620 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
621 let multi_cursor_modifier = match multi_cursor_setting {
622 MultiCursorModifier::Alt => event.modifiers.secondary(),
623 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
624 };
625
626 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
627 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
628 editor.handle_click_hovered_link(point, event.modifiers, cx);
629
630 cx.stop_propagation();
631 } else if end_selection && pending_nonempty_selections {
632 cx.stop_propagation();
633 } else if cfg!(target_os = "linux")
634 && event.button == MouseButton::Middle
635 && (!text_hitbox.is_hovered(cx) || editor.read_only(cx))
636 {
637 return;
638 }
639 }
640
641 fn mouse_dragged(
642 editor: &mut Editor,
643 event: &MouseMoveEvent,
644 position_map: &PositionMap,
645 text_bounds: Bounds<Pixels>,
646 cx: &mut ViewContext<Editor>,
647 ) {
648 if !editor.has_pending_selection() {
649 return;
650 }
651
652 let point_for_position = position_map.point_for_position(text_bounds, event.position);
653 let mut scroll_delta = gpui::Point::<f32>::default();
654 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
655 let top = text_bounds.origin.y + vertical_margin;
656 let bottom = text_bounds.lower_left().y - vertical_margin;
657 if event.position.y < top {
658 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
659 }
660 if event.position.y > bottom {
661 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
662 }
663
664 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
665 let left = text_bounds.origin.x + horizontal_margin;
666 let right = text_bounds.upper_right().x - horizontal_margin;
667 if event.position.x < left {
668 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
669 }
670 if event.position.x > right {
671 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
672 }
673
674 editor.select(
675 SelectPhase::Update {
676 position: point_for_position.previous_valid,
677 goal_column: point_for_position.exact_unclipped.column(),
678 scroll_delta,
679 },
680 cx,
681 );
682 }
683
684 fn mouse_moved(
685 editor: &mut Editor,
686 event: &MouseMoveEvent,
687 position_map: &PositionMap,
688 text_hitbox: &Hitbox,
689 gutter_hitbox: &Hitbox,
690 cx: &mut ViewContext<Editor>,
691 ) {
692 let modifiers = event.modifiers;
693 let gutter_hovered = gutter_hitbox.is_hovered(cx);
694 editor.set_gutter_hovered(gutter_hovered, cx);
695
696 // Don't trigger hover popover if mouse is hovering over context menu
697 if text_hitbox.is_hovered(cx) {
698 let point_for_position =
699 position_map.point_for_position(text_hitbox.bounds, event.position);
700
701 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
702
703 if let Some(point) = point_for_position.as_valid() {
704 let anchor = position_map
705 .snapshot
706 .buffer_snapshot
707 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
708 hover_at(editor, Some(anchor), cx);
709 Self::update_visible_cursor(editor, point, position_map, cx);
710 } else {
711 hover_at(editor, None, cx);
712 }
713 } else {
714 editor.hide_hovered_link(cx);
715 hover_at(editor, None, cx);
716 if gutter_hovered {
717 cx.stop_propagation();
718 }
719 }
720 }
721
722 fn update_visible_cursor(
723 editor: &mut Editor,
724 point: DisplayPoint,
725 position_map: &PositionMap,
726 cx: &mut ViewContext<Editor>,
727 ) {
728 let snapshot = &position_map.snapshot;
729 let Some(hub) = editor.collaboration_hub() else {
730 return;
731 };
732 let start = snapshot.display_snapshot.clip_point(
733 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
734 Bias::Left,
735 );
736 let end = snapshot.display_snapshot.clip_point(
737 DisplayPoint::new(
738 point.row(),
739 (point.column() + 1).min(snapshot.line_len(point.row())),
740 ),
741 Bias::Right,
742 );
743
744 let range = snapshot
745 .buffer_snapshot
746 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
747 ..snapshot
748 .buffer_snapshot
749 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
750
751 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
752 return;
753 };
754 let key = crate::HoveredCursor {
755 replica_id: selection.replica_id,
756 selection_id: selection.selection.id,
757 };
758 editor.hovered_cursors.insert(
759 key.clone(),
760 cx.spawn(|editor, mut cx| async move {
761 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
762 editor
763 .update(&mut cx, |editor, cx| {
764 editor.hovered_cursors.remove(&key);
765 cx.notify();
766 })
767 .ok();
768 }),
769 );
770 cx.notify()
771 }
772
773 fn layout_selections(
774 &self,
775 start_anchor: Anchor,
776 end_anchor: Anchor,
777 snapshot: &EditorSnapshot,
778 start_row: DisplayRow,
779 end_row: DisplayRow,
780 cx: &mut WindowContext,
781 ) -> (
782 Vec<(PlayerColor, Vec<SelectionLayout>)>,
783 BTreeMap<DisplayRow, bool>,
784 Option<DisplayPoint>,
785 ) {
786 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
787 let mut active_rows = BTreeMap::new();
788 let mut newest_selection_head = None;
789 let editor = self.editor.read(cx);
790
791 if editor.show_local_selections {
792 let mut local_selections: Vec<Selection<Point>> = editor
793 .selections
794 .disjoint_in_range(start_anchor..end_anchor, cx);
795 local_selections.extend(editor.selections.pending(cx));
796 let mut layouts = Vec::new();
797 let newest = editor.selections.newest(cx);
798 for selection in local_selections.drain(..) {
799 let is_empty = selection.start == selection.end;
800 let is_newest = selection == newest;
801
802 let layout = SelectionLayout::new(
803 selection,
804 editor.selections.line_mode,
805 editor.cursor_shape,
806 &snapshot.display_snapshot,
807 is_newest,
808 editor.leader_peer_id.is_none(),
809 None,
810 );
811 if is_newest {
812 newest_selection_head = Some(layout.head);
813 }
814
815 for row in cmp::max(layout.active_rows.start.0, start_row.0)
816 ..=cmp::min(layout.active_rows.end.0, end_row.0)
817 {
818 let contains_non_empty_selection =
819 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
820 *contains_non_empty_selection |= !is_empty;
821 }
822 layouts.push(layout);
823 }
824
825 let player = if editor.read_only(cx) {
826 cx.theme().players().read_only()
827 } else {
828 self.style.local_player
829 };
830
831 selections.push((player, layouts));
832 }
833
834 if let Some(collaboration_hub) = &editor.collaboration_hub {
835 // When following someone, render the local selections in their color.
836 if let Some(leader_id) = editor.leader_peer_id {
837 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
838 if let Some(participant_index) = collaboration_hub
839 .user_participant_indices(cx)
840 .get(&collaborator.user_id)
841 {
842 if let Some((local_selection_style, _)) = selections.first_mut() {
843 *local_selection_style = cx
844 .theme()
845 .players()
846 .color_for_participant(participant_index.0);
847 }
848 }
849 }
850 }
851
852 let mut remote_selections = HashMap::default();
853 for selection in snapshot.remote_selections_in_range(
854 &(start_anchor..end_anchor),
855 collaboration_hub.as_ref(),
856 cx,
857 ) {
858 let selection_style = Self::get_participant_color(selection.participant_index, cx);
859
860 // Don't re-render the leader's selections, since the local selections
861 // match theirs.
862 if Some(selection.peer_id) == editor.leader_peer_id {
863 continue;
864 }
865 let key = HoveredCursor {
866 replica_id: selection.replica_id,
867 selection_id: selection.selection.id,
868 };
869
870 let is_shown =
871 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
872
873 remote_selections
874 .entry(selection.replica_id)
875 .or_insert((selection_style, Vec::new()))
876 .1
877 .push(SelectionLayout::new(
878 selection.selection,
879 selection.line_mode,
880 selection.cursor_shape,
881 &snapshot.display_snapshot,
882 false,
883 false,
884 if is_shown { selection.user_name } else { None },
885 ));
886 }
887
888 selections.extend(remote_selections.into_values());
889 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
890 let player = if editor.read_only(cx) {
891 cx.theme().players().read_only()
892 } else {
893 self.style.local_player
894 };
895 let layouts = snapshot
896 .buffer_snapshot
897 .selections_in_range(&(start_anchor..end_anchor), true)
898 .map(move |(_, line_mode, cursor_shape, selection)| {
899 SelectionLayout::new(
900 selection,
901 line_mode,
902 cursor_shape,
903 &snapshot.display_snapshot,
904 false,
905 false,
906 None,
907 )
908 })
909 .collect::<Vec<_>>();
910 selections.push((player, layouts));
911 }
912 (selections, active_rows, newest_selection_head)
913 }
914
915 fn collect_cursors(
916 &self,
917 snapshot: &EditorSnapshot,
918 cx: &mut WindowContext,
919 ) -> Vec<(DisplayPoint, Hsla)> {
920 let editor = self.editor.read(cx);
921 let mut cursors = Vec::new();
922 let mut skip_local = false;
923 let mut add_cursor = |anchor: Anchor, color| {
924 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
925 };
926 // Remote cursors
927 if let Some(collaboration_hub) = &editor.collaboration_hub {
928 for remote_selection in snapshot.remote_selections_in_range(
929 &(Anchor::min()..Anchor::max()),
930 collaboration_hub.deref(),
931 cx,
932 ) {
933 let color = Self::get_participant_color(remote_selection.participant_index, cx);
934 add_cursor(remote_selection.selection.head(), color.cursor);
935 if Some(remote_selection.peer_id) == editor.leader_peer_id {
936 skip_local = true;
937 }
938 }
939 }
940 // Local cursors
941 if !skip_local {
942 let color = cx.theme().players().local().cursor;
943 editor.selections.disjoint.iter().for_each(|selection| {
944 add_cursor(selection.head(), color);
945 });
946 if let Some(ref selection) = editor.selections.pending_anchor() {
947 add_cursor(selection.head(), color);
948 }
949 }
950 cursors
951 }
952
953 #[allow(clippy::too_many_arguments)]
954 fn layout_visible_cursors(
955 &self,
956 snapshot: &EditorSnapshot,
957 selections: &[(PlayerColor, Vec<SelectionLayout>)],
958 visible_display_row_range: Range<DisplayRow>,
959 line_layouts: &[LineWithInvisibles],
960 text_hitbox: &Hitbox,
961 content_origin: gpui::Point<Pixels>,
962 scroll_position: gpui::Point<f32>,
963 scroll_pixel_position: gpui::Point<Pixels>,
964 line_height: Pixels,
965 em_width: Pixels,
966 autoscroll_containing_element: bool,
967 cx: &mut WindowContext,
968 ) -> Vec<CursorLayout> {
969 let mut autoscroll_bounds = None;
970 let cursor_layouts = self.editor.update(cx, |editor, cx| {
971 let mut cursors = Vec::new();
972 for (player_color, selections) in selections {
973 for selection in selections {
974 let cursor_position = selection.head;
975
976 let in_range = visible_display_row_range.contains(&cursor_position.row());
977 if (selection.is_local && !editor.show_local_cursors(cx)) || !in_range {
978 continue;
979 }
980
981 let cursor_row_layout = &line_layouts
982 [cursor_position.row().minus(visible_display_row_range.start) as usize];
983 let cursor_column = cursor_position.column() as usize;
984
985 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
986 let mut block_width =
987 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
988 if block_width == Pixels::ZERO {
989 block_width = em_width;
990 }
991 let block_text = if let CursorShape::Block = selection.cursor_shape {
992 snapshot.display_chars_at(cursor_position).next().and_then(
993 |(character, _)| {
994 let text = if character == '\n' {
995 SharedString::from(" ")
996 } else {
997 SharedString::from(character.to_string())
998 };
999 let len = text.len();
1000
1001 let font = cursor_row_layout
1002 .font_id_for_index(cursor_column)
1003 .and_then(|cursor_font_id| {
1004 cx.text_system().get_font_for_id(cursor_font_id)
1005 })
1006 .unwrap_or(self.style.text.font());
1007
1008 cx.text_system()
1009 .shape_line(
1010 text,
1011 cursor_row_layout.font_size,
1012 &[TextRun {
1013 len,
1014 font,
1015 color: self.style.background,
1016 background_color: None,
1017 strikethrough: None,
1018 underline: None,
1019 }],
1020 )
1021 .log_err()
1022 },
1023 )
1024 } else {
1025 None
1026 };
1027
1028 let x = cursor_character_x - scroll_pixel_position.x;
1029 let y = (cursor_position.row().as_f32()
1030 - scroll_pixel_position.y / line_height)
1031 * line_height;
1032 if selection.is_newest {
1033 editor.pixel_position_of_newest_cursor = Some(point(
1034 text_hitbox.origin.x + x + block_width / 2.,
1035 text_hitbox.origin.y + y + line_height / 2.,
1036 ));
1037
1038 if autoscroll_containing_element {
1039 let top = text_hitbox.origin.y
1040 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1041 * line_height;
1042 let left = text_hitbox.origin.x
1043 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1044 .max(0.)
1045 * em_width;
1046
1047 let bottom = text_hitbox.origin.y
1048 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1049 * line_height;
1050 let right = text_hitbox.origin.x
1051 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1052 * em_width;
1053
1054 autoscroll_bounds =
1055 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1056 }
1057 }
1058
1059 let mut cursor = CursorLayout {
1060 color: player_color.cursor,
1061 block_width,
1062 origin: point(x, y),
1063 line_height,
1064 shape: selection.cursor_shape,
1065 block_text,
1066 cursor_name: None,
1067 };
1068 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1069 string: name,
1070 color: self.style.background,
1071 is_top_row: cursor_position.row().0 == 0,
1072 });
1073 cursor.layout(content_origin, cursor_name, cx);
1074 cursors.push(cursor);
1075 }
1076 }
1077 cursors
1078 });
1079
1080 if let Some(bounds) = autoscroll_bounds {
1081 cx.request_autoscroll(bounds);
1082 }
1083
1084 cursor_layouts
1085 }
1086
1087 fn layout_scrollbar(
1088 &self,
1089 snapshot: &EditorSnapshot,
1090 bounds: Bounds<Pixels>,
1091 scroll_position: gpui::Point<f32>,
1092 rows_per_page: f32,
1093 non_visible_cursors: bool,
1094 cx: &mut WindowContext,
1095 ) -> Option<ScrollbarLayout> {
1096 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1097 let show_scrollbars = match scrollbar_settings.show {
1098 ShowScrollbar::Auto => {
1099 let editor = self.editor.read(cx);
1100 let is_singleton = editor.is_singleton(cx);
1101 // Git
1102 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1103 ||
1104 // Buffer Search Results
1105 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1106 ||
1107 // Selected Symbol Occurrences
1108 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1109 ||
1110 // Diagnostics
1111 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
1112 ||
1113 // Cursors out of sight
1114 non_visible_cursors
1115 ||
1116 // Scrollmanager
1117 editor.scroll_manager.scrollbars_visible()
1118 }
1119 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1120 ShowScrollbar::Always => true,
1121 ShowScrollbar::Never => false,
1122 };
1123 if snapshot.mode != EditorMode::Full {
1124 return None;
1125 }
1126
1127 let visible_row_range = scroll_position.y..scroll_position.y + rows_per_page;
1128
1129 // If a drag took place after we started dragging the scrollbar,
1130 // cancel the scrollbar drag.
1131 if cx.has_active_drag() {
1132 self.editor.update(cx, |editor, cx| {
1133 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1134 });
1135 }
1136
1137 let track_bounds = Bounds::from_corners(
1138 point(self.scrollbar_left(&bounds), bounds.origin.y),
1139 point(bounds.lower_right().x, bounds.lower_left().y),
1140 );
1141
1142 let settings = EditorSettings::get_global(cx);
1143 let scroll_beyond_last_line: f32 = match settings.scroll_beyond_last_line {
1144 ScrollBeyondLastLine::OnePage => rows_per_page,
1145 ScrollBeyondLastLine::Off => 1.0,
1146 ScrollBeyondLastLine::VerticalScrollMargin => 1.0 + settings.vertical_scroll_margin,
1147 };
1148 let total_rows =
1149 (snapshot.max_point().row().as_f32() + scroll_beyond_last_line).max(rows_per_page);
1150 let height = bounds.size.height;
1151 let px_per_row = height / total_rows;
1152 let thumb_height = (rows_per_page * px_per_row).max(ScrollbarLayout::MIN_THUMB_HEIGHT);
1153 let row_height = (height - thumb_height) / (total_rows - rows_per_page).max(0.);
1154
1155 Some(ScrollbarLayout {
1156 hitbox: cx.insert_hitbox(track_bounds, false),
1157 visible_row_range,
1158 row_height,
1159 visible: show_scrollbars,
1160 thumb_height,
1161 })
1162 }
1163
1164 #[allow(clippy::too_many_arguments)]
1165 fn prepaint_gutter_fold_toggles(
1166 &self,
1167 toggles: &mut [Option<AnyElement>],
1168 line_height: Pixels,
1169 gutter_dimensions: &GutterDimensions,
1170 gutter_settings: crate::editor_settings::Gutter,
1171 scroll_pixel_position: gpui::Point<Pixels>,
1172 gutter_hitbox: &Hitbox,
1173 cx: &mut WindowContext,
1174 ) {
1175 for (ix, fold_indicator) in toggles.iter_mut().enumerate() {
1176 if let Some(fold_indicator) = fold_indicator {
1177 debug_assert!(gutter_settings.folds);
1178 let available_space = size(
1179 AvailableSpace::MinContent,
1180 AvailableSpace::Definite(line_height * 0.55),
1181 );
1182 let fold_indicator_size = fold_indicator.layout_as_root(available_space, cx);
1183
1184 let position = point(
1185 gutter_dimensions.width - gutter_dimensions.right_padding,
1186 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1187 );
1188 let centering_offset = point(
1189 (gutter_dimensions.fold_area_width() - fold_indicator_size.width) / 2.,
1190 (line_height - fold_indicator_size.height) / 2.,
1191 );
1192 let origin = gutter_hitbox.origin + position + centering_offset;
1193 fold_indicator.prepaint_as_root(origin, available_space, cx);
1194 }
1195 }
1196 }
1197
1198 #[allow(clippy::too_many_arguments)]
1199 fn prepaint_crease_trailers(
1200 &self,
1201 trailers: Vec<Option<AnyElement>>,
1202 lines: &[LineWithInvisibles],
1203 line_height: Pixels,
1204 content_origin: gpui::Point<Pixels>,
1205 scroll_pixel_position: gpui::Point<Pixels>,
1206 em_width: Pixels,
1207 cx: &mut WindowContext,
1208 ) -> Vec<Option<CreaseTrailerLayout>> {
1209 trailers
1210 .into_iter()
1211 .enumerate()
1212 .map(|(ix, element)| {
1213 let mut element = element?;
1214 let available_space = size(
1215 AvailableSpace::MinContent,
1216 AvailableSpace::Definite(line_height),
1217 );
1218 let size = element.layout_as_root(available_space, cx);
1219
1220 let line = &lines[ix];
1221 let padding = if line.width == Pixels::ZERO {
1222 Pixels::ZERO
1223 } else {
1224 4. * em_width
1225 };
1226 let position = point(
1227 scroll_pixel_position.x + line.width + padding,
1228 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1229 );
1230 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1231 let origin = content_origin + position + centering_offset;
1232 element.prepaint_as_root(origin, available_space, cx);
1233 Some(CreaseTrailerLayout {
1234 element,
1235 bounds: Bounds::new(origin, size),
1236 })
1237 })
1238 .collect()
1239 }
1240
1241 // Folds contained in a hunk are ignored apart from shrinking visual size
1242 // If a fold contains any hunks then that fold line is marked as modified
1243 fn layout_gutter_git_hunks(
1244 &self,
1245 line_height: Pixels,
1246 gutter_hitbox: &Hitbox,
1247 display_rows: Range<DisplayRow>,
1248 anchor_range: Range<Anchor>,
1249 snapshot: &EditorSnapshot,
1250 cx: &mut WindowContext,
1251 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1252 let buffer_snapshot = &snapshot.buffer_snapshot;
1253
1254 let buffer_start_row = MultiBufferRow(
1255 DisplayPoint::new(display_rows.start, 0)
1256 .to_point(snapshot)
1257 .row,
1258 );
1259 let buffer_end_row = MultiBufferRow(
1260 DisplayPoint::new(display_rows.end, 0)
1261 .to_point(snapshot)
1262 .row,
1263 );
1264
1265 let git_gutter_setting = ProjectSettings::get_global(cx)
1266 .git
1267 .git_gutter
1268 .unwrap_or_default();
1269
1270 self.editor.update(cx, |editor, cx| {
1271 let expanded_hunks = &editor.expanded_hunks.hunks;
1272 let expanded_hunks_start_ix = expanded_hunks
1273 .binary_search_by(|hunk| {
1274 hunk.hunk_range
1275 .end
1276 .cmp(&anchor_range.start, &buffer_snapshot)
1277 .then(Ordering::Less)
1278 })
1279 .unwrap_err();
1280 let mut expanded_hunks = expanded_hunks[expanded_hunks_start_ix..].iter().peekable();
1281
1282 let display_hunks = buffer_snapshot
1283 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1284 .filter_map(|hunk| {
1285 let display_hunk = diff_hunk_to_display(&hunk, snapshot);
1286
1287 if let DisplayDiffHunk::Unfolded {
1288 multi_buffer_range,
1289 status,
1290 ..
1291 } = &display_hunk
1292 {
1293 let mut is_expanded = false;
1294 while let Some(expanded_hunk) = expanded_hunks.peek() {
1295 match expanded_hunk
1296 .hunk_range
1297 .start
1298 .cmp(&multi_buffer_range.start, &buffer_snapshot)
1299 {
1300 Ordering::Less => {
1301 expanded_hunks.next();
1302 }
1303 Ordering::Equal => {
1304 is_expanded = true;
1305 break;
1306 }
1307 Ordering::Greater => {
1308 break;
1309 }
1310 }
1311 }
1312 match status {
1313 DiffHunkStatus::Added => {}
1314 DiffHunkStatus::Modified => {}
1315 DiffHunkStatus::Removed => {
1316 if is_expanded {
1317 return None;
1318 }
1319 }
1320 }
1321 }
1322
1323 Some(display_hunk)
1324 })
1325 .dedup()
1326 .map(|hunk| match git_gutter_setting {
1327 GitGutterSetting::TrackedFiles => {
1328 let hitbox = match hunk {
1329 DisplayDiffHunk::Unfolded { .. } => {
1330 let hunk_bounds = Self::diff_hunk_bounds(
1331 snapshot,
1332 line_height,
1333 gutter_hitbox.bounds,
1334 &hunk,
1335 );
1336 Some(cx.insert_hitbox(hunk_bounds, true))
1337 }
1338 DisplayDiffHunk::Folded { .. } => None,
1339 };
1340 (hunk, hitbox)
1341 }
1342 GitGutterSetting::Hide => (hunk, None),
1343 })
1344 .collect();
1345 display_hunks
1346 })
1347 }
1348
1349 #[allow(clippy::too_many_arguments)]
1350 fn layout_inline_blame(
1351 &self,
1352 display_row: DisplayRow,
1353 display_snapshot: &DisplaySnapshot,
1354 line_layout: &LineWithInvisibles,
1355 crease_trailer: Option<&CreaseTrailerLayout>,
1356 em_width: Pixels,
1357 content_origin: gpui::Point<Pixels>,
1358 scroll_pixel_position: gpui::Point<Pixels>,
1359 line_height: Pixels,
1360 cx: &mut WindowContext,
1361 ) -> Option<AnyElement> {
1362 if !self
1363 .editor
1364 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1365 {
1366 return None;
1367 }
1368
1369 let workspace = self
1370 .editor
1371 .read(cx)
1372 .workspace
1373 .as_ref()
1374 .map(|(w, _)| w.clone());
1375
1376 let display_point = DisplayPoint::new(display_row, 0);
1377 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1378
1379 let blame = self.editor.read(cx).blame.clone()?;
1380 let blame_entry = blame
1381 .update(cx, |blame, cx| {
1382 blame.blame_for_rows([Some(buffer_row)], cx).next()
1383 })
1384 .flatten()?;
1385
1386 let mut element =
1387 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1388
1389 let start_y = content_origin.y
1390 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1391
1392 let start_x = {
1393 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1394
1395 let line_end = if let Some(crease_trailer) = crease_trailer {
1396 crease_trailer.bounds.right()
1397 } else {
1398 content_origin.x - scroll_pixel_position.x + line_layout.width
1399 };
1400 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1401
1402 let min_column_in_pixels = ProjectSettings::get_global(cx)
1403 .git
1404 .inline_blame
1405 .and_then(|settings| settings.min_column)
1406 .map(|col| self.column_pixels(col as usize, cx))
1407 .unwrap_or(px(0.));
1408 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1409
1410 cmp::max(padded_line_end, min_start)
1411 };
1412
1413 let absolute_offset = point(start_x, start_y);
1414 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1415
1416 Some(element)
1417 }
1418
1419 #[allow(clippy::too_many_arguments)]
1420 fn layout_blame_entries(
1421 &self,
1422 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1423 em_width: Pixels,
1424 scroll_position: gpui::Point<f32>,
1425 line_height: Pixels,
1426 gutter_hitbox: &Hitbox,
1427 max_width: Option<Pixels>,
1428 cx: &mut WindowContext,
1429 ) -> Option<Vec<AnyElement>> {
1430 if !self
1431 .editor
1432 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1433 {
1434 return None;
1435 }
1436
1437 let blame = self.editor.read(cx).blame.clone()?;
1438 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1439 blame.blame_for_rows(buffer_rows, cx).collect()
1440 });
1441
1442 let width = if let Some(max_width) = max_width {
1443 AvailableSpace::Definite(max_width)
1444 } else {
1445 AvailableSpace::MaxContent
1446 };
1447 let scroll_top = scroll_position.y * line_height;
1448 let start_x = em_width * 1;
1449
1450 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1451
1452 let shaped_lines = blamed_rows
1453 .into_iter()
1454 .enumerate()
1455 .flat_map(|(ix, blame_entry)| {
1456 if let Some(blame_entry) = blame_entry {
1457 let mut element = render_blame_entry(
1458 ix,
1459 &blame,
1460 blame_entry,
1461 &self.style,
1462 &mut last_used_color,
1463 self.editor.clone(),
1464 cx,
1465 );
1466
1467 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1468 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1469
1470 element.prepaint_as_root(
1471 absolute_offset,
1472 size(width, AvailableSpace::MinContent),
1473 cx,
1474 );
1475
1476 Some(element)
1477 } else {
1478 None
1479 }
1480 })
1481 .collect();
1482
1483 Some(shaped_lines)
1484 }
1485
1486 #[allow(clippy::too_many_arguments)]
1487 fn layout_indent_guides(
1488 &self,
1489 content_origin: gpui::Point<Pixels>,
1490 text_origin: gpui::Point<Pixels>,
1491 visible_buffer_range: Range<MultiBufferRow>,
1492 scroll_pixel_position: gpui::Point<Pixels>,
1493 line_height: Pixels,
1494 snapshot: &DisplaySnapshot,
1495 cx: &mut WindowContext,
1496 ) -> Option<Vec<IndentGuideLayout>> {
1497 let indent_guides = self.editor.update(cx, |editor, cx| {
1498 editor.indent_guides(visible_buffer_range, snapshot, cx)
1499 })?;
1500
1501 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1502 editor
1503 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1504 .unwrap_or_default()
1505 });
1506
1507 Some(
1508 indent_guides
1509 .into_iter()
1510 .enumerate()
1511 .filter_map(|(i, indent_guide)| {
1512 let single_indent_width =
1513 self.column_pixels(indent_guide.tab_size as usize, cx);
1514 let total_width = single_indent_width * indent_guide.depth as f32;
1515 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1516 if start_x >= text_origin.x {
1517 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1518 indent_guide.multibuffer_row_range.clone(),
1519 line_height,
1520 snapshot,
1521 );
1522
1523 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1524
1525 Some(IndentGuideLayout {
1526 origin: point(start_x, start_y),
1527 length,
1528 single_indent_width,
1529 depth: indent_guide.depth,
1530 active: active_indent_guide_indices.contains(&i),
1531 settings: indent_guide.settings,
1532 })
1533 } else {
1534 None
1535 }
1536 })
1537 .collect(),
1538 )
1539 }
1540
1541 fn calculate_indent_guide_bounds(
1542 row_range: Range<MultiBufferRow>,
1543 line_height: Pixels,
1544 snapshot: &DisplaySnapshot,
1545 ) -> (gpui::Pixels, gpui::Pixels) {
1546 let start_point = Point::new(row_range.start.0, 0);
1547 let end_point = Point::new(row_range.end.0, 0);
1548
1549 let row_range = start_point.to_display_point(snapshot).row()
1550 ..end_point.to_display_point(snapshot).row();
1551
1552 let mut prev_line = start_point;
1553 prev_line.row = prev_line.row.saturating_sub(1);
1554 let prev_line = prev_line.to_display_point(snapshot).row();
1555
1556 let mut cons_line = end_point;
1557 cons_line.row += 1;
1558 let cons_line = cons_line.to_display_point(snapshot).row();
1559
1560 let mut offset_y = row_range.start.0 as f32 * line_height;
1561 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1562
1563 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1564 if row_range.end == cons_line {
1565 length += line_height;
1566 }
1567
1568 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1569 // we want to extend the indent guide to the start of the block.
1570 let mut block_height = 0;
1571 let mut block_offset = 0;
1572 let mut found_excerpt_header = false;
1573 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1574 if matches!(block, Block::ExcerptHeader { .. }) {
1575 found_excerpt_header = true;
1576 break;
1577 }
1578 block_offset += block.height();
1579 block_height += block.height();
1580 }
1581 if !found_excerpt_header {
1582 offset_y -= block_offset as f32 * line_height;
1583 length += block_height as f32 * line_height;
1584 }
1585
1586 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1587 // we want to ensure that the indent guide stops before the excerpt header.
1588 let mut block_height = 0;
1589 let mut found_excerpt_header = false;
1590 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1591 if matches!(block, Block::ExcerptHeader { .. }) {
1592 found_excerpt_header = true;
1593 }
1594 block_height += block.height();
1595 }
1596 if found_excerpt_header {
1597 length -= block_height as f32 * line_height;
1598 }
1599
1600 (offset_y, length)
1601 }
1602
1603 #[allow(clippy::too_many_arguments)]
1604 fn layout_run_indicators(
1605 &self,
1606 line_height: Pixels,
1607 range: Range<DisplayRow>,
1608 scroll_pixel_position: gpui::Point<Pixels>,
1609 gutter_dimensions: &GutterDimensions,
1610 gutter_hitbox: &Hitbox,
1611 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1612 snapshot: &EditorSnapshot,
1613 cx: &mut WindowContext,
1614 ) -> Vec<AnyElement> {
1615 self.editor.update(cx, |editor, cx| {
1616 let active_task_indicator_row =
1617 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1618 deployed_from_indicator,
1619 actions,
1620 ..
1621 })) = editor.context_menu.read().as_ref()
1622 {
1623 actions
1624 .tasks
1625 .as_ref()
1626 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1627 .or(*deployed_from_indicator)
1628 } else {
1629 None
1630 };
1631
1632 editor
1633 .tasks
1634 .iter()
1635 .filter_map(|(_, tasks)| {
1636 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1637 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1638 let display_row = multibuffer_point.to_display_point(snapshot).row();
1639 if range.start > display_row || range.end < display_row {
1640 return None;
1641 }
1642 if snapshot.is_line_folded(multibuffer_row) {
1643 return None;
1644 }
1645 let button = editor.render_run_indicator(
1646 &self.style,
1647 Some(display_row) == active_task_indicator_row,
1648 display_row,
1649 cx,
1650 );
1651
1652 let button = prepaint_gutter_button(
1653 button,
1654 display_row,
1655 line_height,
1656 gutter_dimensions,
1657 scroll_pixel_position,
1658 gutter_hitbox,
1659 rows_with_hunk_bounds,
1660 cx,
1661 );
1662 Some(button)
1663 })
1664 .collect_vec()
1665 })
1666 }
1667
1668 #[allow(clippy::too_many_arguments)]
1669 fn layout_code_actions_indicator(
1670 &self,
1671 line_height: Pixels,
1672 newest_selection_head: DisplayPoint,
1673 scroll_pixel_position: gpui::Point<Pixels>,
1674 gutter_dimensions: &GutterDimensions,
1675 gutter_hitbox: &Hitbox,
1676 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1677 cx: &mut WindowContext,
1678 ) -> Option<AnyElement> {
1679 let mut active = false;
1680 let mut button = None;
1681 let row = newest_selection_head.row();
1682 self.editor.update(cx, |editor, cx| {
1683 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1684 deployed_from_indicator,
1685 ..
1686 })) = editor.context_menu.read().as_ref()
1687 {
1688 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1689 };
1690 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1691 });
1692
1693 let button = prepaint_gutter_button(
1694 button?,
1695 row,
1696 line_height,
1697 gutter_dimensions,
1698 scroll_pixel_position,
1699 gutter_hitbox,
1700 rows_with_hunk_bounds,
1701 cx,
1702 );
1703
1704 Some(button)
1705 }
1706
1707 fn get_participant_color(
1708 participant_index: Option<ParticipantIndex>,
1709 cx: &WindowContext,
1710 ) -> PlayerColor {
1711 if let Some(index) = participant_index {
1712 cx.theme().players().color_for_participant(index.0)
1713 } else {
1714 cx.theme().players().absent()
1715 }
1716 }
1717
1718 fn calculate_relative_line_numbers(
1719 &self,
1720 snapshot: &EditorSnapshot,
1721 rows: &Range<DisplayRow>,
1722 relative_to: Option<DisplayRow>,
1723 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1724 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1725 let Some(relative_to) = relative_to else {
1726 return relative_rows;
1727 };
1728
1729 let start = rows.start.min(relative_to);
1730 let end = rows.end.max(relative_to);
1731
1732 let buffer_rows = snapshot
1733 .buffer_rows(start)
1734 .take(1 + end.minus(start) as usize)
1735 .collect::<Vec<_>>();
1736
1737 let head_idx = relative_to.minus(start);
1738 let mut delta = 1;
1739 let mut i = head_idx + 1;
1740 while i < buffer_rows.len() as u32 {
1741 if buffer_rows[i as usize].is_some() {
1742 if rows.contains(&DisplayRow(i + start.0)) {
1743 relative_rows.insert(DisplayRow(i + start.0), delta);
1744 }
1745 delta += 1;
1746 }
1747 i += 1;
1748 }
1749 delta = 1;
1750 i = head_idx.min(buffer_rows.len() as u32 - 1);
1751 while i > 0 && buffer_rows[i as usize].is_none() {
1752 i -= 1;
1753 }
1754
1755 while i > 0 {
1756 i -= 1;
1757 if buffer_rows[i as usize].is_some() {
1758 if rows.contains(&DisplayRow(i + start.0)) {
1759 relative_rows.insert(DisplayRow(i + start.0), delta);
1760 }
1761 delta += 1;
1762 }
1763 }
1764
1765 relative_rows
1766 }
1767
1768 fn layout_line_numbers(
1769 &self,
1770 rows: Range<DisplayRow>,
1771 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1772 active_rows: &BTreeMap<DisplayRow, bool>,
1773 newest_selection_head: Option<DisplayPoint>,
1774 snapshot: &EditorSnapshot,
1775 cx: &mut WindowContext,
1776 ) -> Vec<Option<ShapedLine>> {
1777 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
1778 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
1779 });
1780 if !include_line_numbers {
1781 return Vec::new();
1782 }
1783
1784 let editor = self.editor.read(cx);
1785 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1786 let newest = editor.selections.newest::<Point>(cx);
1787 SelectionLayout::new(
1788 newest,
1789 editor.selections.line_mode,
1790 editor.cursor_shape,
1791 &snapshot.display_snapshot,
1792 true,
1793 true,
1794 None,
1795 )
1796 .head
1797 });
1798 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1799
1800 let is_relative = editor.should_use_relative_line_numbers(cx);
1801 let relative_to = if is_relative {
1802 Some(newest_selection_head.row())
1803 } else {
1804 None
1805 };
1806 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
1807 let mut line_number = String::new();
1808 buffer_rows
1809 .into_iter()
1810 .enumerate()
1811 .map(|(ix, multibuffer_row)| {
1812 let multibuffer_row = multibuffer_row?;
1813 let display_row = DisplayRow(rows.start.0 + ix as u32);
1814 let color = if active_rows.contains_key(&display_row) {
1815 cx.theme().colors().editor_active_line_number
1816 } else {
1817 cx.theme().colors().editor_line_number
1818 };
1819 line_number.clear();
1820 let default_number = multibuffer_row.0 + 1;
1821 let number = relative_rows
1822 .get(&DisplayRow(ix as u32 + rows.start.0))
1823 .unwrap_or(&default_number);
1824 write!(&mut line_number, "{number}").unwrap();
1825 let run = TextRun {
1826 len: line_number.len(),
1827 font: self.style.text.font(),
1828 color,
1829 background_color: None,
1830 underline: None,
1831 strikethrough: None,
1832 };
1833 let shaped_line = cx
1834 .text_system()
1835 .shape_line(line_number.clone().into(), font_size, &[run])
1836 .unwrap();
1837 Some(shaped_line)
1838 })
1839 .collect()
1840 }
1841
1842 fn layout_gutter_fold_toggles(
1843 &self,
1844 rows: Range<DisplayRow>,
1845 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1846 active_rows: &BTreeMap<DisplayRow, bool>,
1847 snapshot: &EditorSnapshot,
1848 cx: &mut WindowContext,
1849 ) -> Vec<Option<AnyElement>> {
1850 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
1851 && snapshot.mode == EditorMode::Full
1852 && self.editor.read(cx).is_singleton(cx);
1853 if include_fold_statuses {
1854 buffer_rows
1855 .into_iter()
1856 .enumerate()
1857 .map(|(ix, row)| {
1858 if let Some(multibuffer_row) = row {
1859 let display_row = DisplayRow(rows.start.0 + ix as u32);
1860 let active = active_rows.contains_key(&display_row);
1861 snapshot.render_fold_toggle(
1862 multibuffer_row,
1863 active,
1864 self.editor.clone(),
1865 cx,
1866 )
1867 } else {
1868 None
1869 }
1870 })
1871 .collect()
1872 } else {
1873 Vec::new()
1874 }
1875 }
1876
1877 fn layout_crease_trailers(
1878 &self,
1879 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1880 snapshot: &EditorSnapshot,
1881 cx: &mut WindowContext,
1882 ) -> Vec<Option<AnyElement>> {
1883 buffer_rows
1884 .into_iter()
1885 .map(|row| {
1886 if let Some(multibuffer_row) = row {
1887 snapshot.render_crease_trailer(multibuffer_row, cx)
1888 } else {
1889 None
1890 }
1891 })
1892 .collect()
1893 }
1894
1895 fn layout_lines(
1896 rows: Range<DisplayRow>,
1897 line_number_layouts: &[Option<ShapedLine>],
1898 snapshot: &EditorSnapshot,
1899 style: &EditorStyle,
1900 editor_width: Pixels,
1901 cx: &mut WindowContext,
1902 ) -> Vec<LineWithInvisibles> {
1903 if rows.start >= rows.end {
1904 return Vec::new();
1905 }
1906
1907 // Show the placeholder when the editor is empty
1908 if snapshot.is_empty() {
1909 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1910 let placeholder_color = cx.theme().colors().text_placeholder;
1911 let placeholder_text = snapshot.placeholder_text();
1912
1913 let placeholder_lines = placeholder_text
1914 .as_ref()
1915 .map_or("", AsRef::as_ref)
1916 .split('\n')
1917 .skip(rows.start.0 as usize)
1918 .chain(iter::repeat(""))
1919 .take(rows.len());
1920 placeholder_lines
1921 .filter_map(move |line| {
1922 let run = TextRun {
1923 len: line.len(),
1924 font: style.text.font(),
1925 color: placeholder_color,
1926 background_color: None,
1927 underline: Default::default(),
1928 strikethrough: None,
1929 };
1930 cx.text_system()
1931 .shape_line(line.to_string().into(), font_size, &[run])
1932 .log_err()
1933 })
1934 .map(|line| LineWithInvisibles {
1935 width: line.width,
1936 len: line.len,
1937 fragments: smallvec![LineFragment::Text(line)],
1938 invisibles: Vec::new(),
1939 font_size,
1940 })
1941 .collect()
1942 } else {
1943 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
1944 LineWithInvisibles::from_chunks(
1945 chunks,
1946 &style.text,
1947 MAX_LINE_LEN,
1948 rows.len(),
1949 line_number_layouts,
1950 snapshot.mode,
1951 editor_width,
1952 cx,
1953 )
1954 }
1955 }
1956
1957 fn prepaint_lines(
1958 &self,
1959 start_row: DisplayRow,
1960 line_layouts: &mut [LineWithInvisibles],
1961 line_height: Pixels,
1962 scroll_pixel_position: gpui::Point<Pixels>,
1963 content_origin: gpui::Point<Pixels>,
1964 cx: &mut WindowContext,
1965 ) -> SmallVec<[AnyElement; 1]> {
1966 let mut line_elements = SmallVec::new();
1967 for (ix, line) in line_layouts.iter_mut().enumerate() {
1968 let row = start_row + DisplayRow(ix as u32);
1969 line.prepaint(
1970 line_height,
1971 scroll_pixel_position,
1972 row,
1973 content_origin,
1974 &mut line_elements,
1975 cx,
1976 );
1977 }
1978 line_elements
1979 }
1980
1981 #[allow(clippy::too_many_arguments)]
1982 fn render_block(
1983 &self,
1984 block: &Block,
1985 available_width: AvailableSpace,
1986 block_id: BlockId,
1987 block_row_start: DisplayRow,
1988 snapshot: &EditorSnapshot,
1989 text_x: Pixels,
1990 rows: &Range<DisplayRow>,
1991 line_layouts: &[LineWithInvisibles],
1992 gutter_dimensions: &GutterDimensions,
1993 line_height: Pixels,
1994 em_width: Pixels,
1995 text_hitbox: &Hitbox,
1996 editor_width: Pixels,
1997 scroll_width: &mut Pixels,
1998 resized_blocks: &mut HashMap<CustomBlockId, u32>,
1999 cx: &mut WindowContext,
2000 ) -> (AnyElement, Size<Pixels>) {
2001 let mut element = match block {
2002 Block::Custom(block) => {
2003 let align_to = block
2004 .position()
2005 .to_point(&snapshot.buffer_snapshot)
2006 .to_display_point(snapshot);
2007 let anchor_x = text_x
2008 + if rows.contains(&align_to.row()) {
2009 line_layouts[align_to.row().minus(rows.start) as usize]
2010 .x_for_index(align_to.column() as usize)
2011 } else {
2012 layout_line(align_to.row(), snapshot, &self.style, editor_width, cx)
2013 .x_for_index(align_to.column() as usize)
2014 };
2015
2016 div()
2017 .size_full()
2018 .child(block.render(&mut BlockContext {
2019 context: cx,
2020 anchor_x,
2021 gutter_dimensions,
2022 line_height,
2023 em_width,
2024 block_id,
2025 max_width: text_hitbox.size.width.max(*scroll_width),
2026 editor_style: &self.style,
2027 }))
2028 .cursor(CursorStyle::Arrow)
2029 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
2030 .into_any_element()
2031 }
2032
2033 Block::ExcerptHeader {
2034 buffer,
2035 range,
2036 starts_new_buffer,
2037 height,
2038 id,
2039 show_excerpt_controls,
2040 ..
2041 } => {
2042 let include_root = self
2043 .editor
2044 .read(cx)
2045 .project
2046 .as_ref()
2047 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2048 .unwrap_or_default();
2049
2050 #[derive(Clone)]
2051 struct JumpData {
2052 position: Point,
2053 anchor: text::Anchor,
2054 path: ProjectPath,
2055 line_offset_from_top: u32,
2056 }
2057
2058 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
2059 let jump_path = ProjectPath {
2060 worktree_id: file.worktree_id(cx),
2061 path: file.path.clone(),
2062 };
2063 let jump_anchor = range
2064 .primary
2065 .as_ref()
2066 .map_or(range.context.start, |primary| primary.start);
2067
2068 let excerpt_start = range.context.start;
2069 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2070 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
2071 0
2072 } else {
2073 let excerpt_start_row =
2074 language::ToPoint::to_point(&jump_anchor, buffer).row;
2075 jump_position.row - excerpt_start_row
2076 };
2077
2078 let line_offset_from_top =
2079 block_row_start.0 + *height + offset_from_excerpt_start
2080 - snapshot
2081 .scroll_anchor
2082 .scroll_position(&snapshot.display_snapshot)
2083 .y as u32;
2084
2085 JumpData {
2086 position: jump_position,
2087 anchor: jump_anchor,
2088 path: jump_path,
2089 line_offset_from_top,
2090 }
2091 });
2092
2093 let icon_offset = gutter_dimensions.width
2094 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2095
2096 let element = if *starts_new_buffer {
2097 let path = buffer.resolve_file_path(cx, include_root);
2098 let mut filename = None;
2099 let mut parent_path = None;
2100 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2101 if let Some(path) = path {
2102 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2103 parent_path = path
2104 .parent()
2105 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2106 }
2107
2108 let header_padding = px(6.0);
2109
2110 v_flex()
2111 .id(("path excerpt header", EntityId::from(block_id)))
2112 .w_full()
2113 .px(header_padding)
2114 .pt(header_padding)
2115 .child(
2116 h_flex()
2117 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2118 .id("path header block")
2119 .h(2. * cx.line_height())
2120 .px(gpui::px(12.))
2121 .rounded_md()
2122 .shadow_md()
2123 .border_1()
2124 .border_color(cx.theme().colors().border)
2125 .bg(cx.theme().colors().editor_subheader_background)
2126 .justify_between()
2127 .hover(|style| style.bg(cx.theme().colors().element_hover))
2128 .child(
2129 h_flex().gap_3().child(
2130 h_flex()
2131 .gap_2()
2132 .child(
2133 filename
2134 .map(SharedString::from)
2135 .unwrap_or_else(|| "untitled".into()),
2136 )
2137 .when_some(parent_path, |then, path| {
2138 then.child(
2139 div()
2140 .child(path)
2141 .text_color(cx.theme().colors().text_muted),
2142 )
2143 }),
2144 ),
2145 )
2146 .when_some(jump_data.clone(), |el, jump_data| {
2147 el.child(Icon::new(IconName::ArrowUpRight))
2148 .cursor_pointer()
2149 .tooltip(|cx| {
2150 Tooltip::for_action("Jump to File", &OpenExcerpts, cx)
2151 })
2152 .on_mouse_down(MouseButton::Left, |_, cx| {
2153 cx.stop_propagation()
2154 })
2155 .on_click(cx.listener_for(&self.editor, {
2156 move |editor, _, cx| {
2157 editor.jump(
2158 jump_data.path.clone(),
2159 jump_data.position,
2160 jump_data.anchor,
2161 jump_data.line_offset_from_top,
2162 cx,
2163 );
2164 }
2165 }))
2166 }),
2167 )
2168 .children(show_excerpt_controls.then(|| {
2169 h_flex()
2170 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.333)))
2171 .h(1. * cx.line_height())
2172 .pt_1()
2173 .justify_end()
2174 .flex_none()
2175 .w(icon_offset - header_padding)
2176 .child(
2177 ButtonLike::new("expand-icon")
2178 .style(ButtonStyle::Transparent)
2179 .child(
2180 svg()
2181 .path(IconName::ArrowUpFromLine.path())
2182 .size(IconSize::XSmall.rems())
2183 .text_color(cx.theme().colors().editor_line_number)
2184 .group("")
2185 .hover(|style| {
2186 style.text_color(
2187 cx.theme()
2188 .colors()
2189 .editor_active_line_number,
2190 )
2191 }),
2192 )
2193 .on_click(cx.listener_for(&self.editor, {
2194 let id = *id;
2195 move |editor, _, cx| {
2196 editor.expand_excerpt(
2197 id,
2198 multi_buffer::ExpandExcerptDirection::Up,
2199 cx,
2200 );
2201 }
2202 }))
2203 .tooltip({
2204 move |cx| {
2205 Tooltip::for_action(
2206 "Expand Excerpt",
2207 &ExpandExcerpts { lines: 0 },
2208 cx,
2209 )
2210 }
2211 }),
2212 )
2213 }))
2214 } else {
2215 v_flex()
2216 .id(("excerpt header", EntityId::from(block_id)))
2217 .w_full()
2218 .h(snapshot.excerpt_header_height() as f32 * cx.line_height())
2219 .child(
2220 div()
2221 .flex()
2222 .v_flex()
2223 .justify_start()
2224 .id("jump to collapsed context")
2225 .w(relative(1.0))
2226 .h_full()
2227 .child(
2228 div()
2229 .h_px()
2230 .w_full()
2231 .bg(cx.theme().colors().border_variant)
2232 .group_hover("excerpt-jump-action", |style| {
2233 style.bg(cx.theme().colors().border)
2234 }),
2235 ),
2236 )
2237 .child(
2238 h_flex()
2239 .justify_end()
2240 .flex_none()
2241 .w(icon_offset)
2242 .h_full()
2243 .child(
2244 show_excerpt_controls
2245 .then(|| {
2246 ButtonLike::new("expand-icon")
2247 .style(ButtonStyle::Transparent)
2248 .child(
2249 svg()
2250 .path(IconName::ArrowUpFromLine.path())
2251 .size(IconSize::XSmall.rems())
2252 .text_color(
2253 cx.theme().colors().editor_line_number,
2254 )
2255 .group("")
2256 .hover(|style| {
2257 style.text_color(
2258 cx.theme()
2259 .colors()
2260 .editor_active_line_number,
2261 )
2262 }),
2263 )
2264 .on_click(cx.listener_for(&self.editor, {
2265 let id = *id;
2266 move |editor, _, cx| {
2267 editor.expand_excerpt(
2268 id,
2269 multi_buffer::ExpandExcerptDirection::Up,
2270 cx,
2271 );
2272 }
2273 }))
2274 .tooltip({
2275 move |cx| {
2276 Tooltip::for_action(
2277 "Expand Excerpt",
2278 &ExpandExcerpts { lines: 0 },
2279 cx,
2280 )
2281 }
2282 })
2283 })
2284 .unwrap_or_else(|| {
2285 ButtonLike::new("jump-icon")
2286 .style(ButtonStyle::Transparent)
2287 .child(
2288 svg()
2289 .path(IconName::ArrowUpRight.path())
2290 .size(IconSize::XSmall.rems())
2291 .text_color(
2292 cx.theme().colors().border_variant,
2293 )
2294 .group("excerpt-jump-action")
2295 .group_hover(
2296 "excerpt-jump-action",
2297 |style| {
2298 style.text_color(
2299 cx.theme().colors().border,
2300 )
2301 },
2302 ),
2303 )
2304 .when_some(jump_data.clone(), |this, jump_data| {
2305 this.on_click(cx.listener_for(&self.editor, {
2306 let path = jump_data.path.clone();
2307 move |editor, _, cx| {
2308 cx.stop_propagation();
2309
2310 editor.jump(
2311 path.clone(),
2312 jump_data.position,
2313 jump_data.anchor,
2314 jump_data.line_offset_from_top,
2315 cx,
2316 );
2317 }
2318 }))
2319 .tooltip(move |cx| {
2320 Tooltip::for_action(
2321 format!(
2322 "Jump to {}:L{}",
2323 jump_data.path.path.display(),
2324 jump_data.position.row + 1
2325 ),
2326 &OpenExcerpts,
2327 cx,
2328 )
2329 })
2330 })
2331 }),
2332 ),
2333 )
2334 .group("excerpt-jump-action")
2335 .cursor_pointer()
2336 .when_some(jump_data.clone(), |this, jump_data| {
2337 this.on_click(cx.listener_for(&self.editor, {
2338 let path = jump_data.path.clone();
2339 move |editor, _, cx| {
2340 cx.stop_propagation();
2341
2342 editor.jump(
2343 path.clone(),
2344 jump_data.position,
2345 jump_data.anchor,
2346 jump_data.line_offset_from_top,
2347 cx,
2348 );
2349 }
2350 }))
2351 .tooltip(move |cx| {
2352 Tooltip::for_action(
2353 format!(
2354 "Jump to {}:L{}",
2355 jump_data.path.path.display(),
2356 jump_data.position.row + 1
2357 ),
2358 &OpenExcerpts,
2359 cx,
2360 )
2361 })
2362 })
2363 };
2364 element.into_any()
2365 }
2366
2367 Block::ExcerptFooter { id, .. } => {
2368 let element = v_flex()
2369 .id(("excerpt footer", EntityId::from(block_id)))
2370 .w_full()
2371 .h(snapshot.excerpt_footer_height() as f32 * cx.line_height())
2372 .child(
2373 h_flex()
2374 .justify_end()
2375 .flex_none()
2376 .w(gutter_dimensions.width
2377 - (gutter_dimensions.left_padding + gutter_dimensions.margin))
2378 .h_full()
2379 .child(
2380 ButtonLike::new("expand-icon")
2381 .style(ButtonStyle::Transparent)
2382 .child(
2383 svg()
2384 .path(IconName::ArrowDownFromLine.path())
2385 .size(IconSize::XSmall.rems())
2386 .text_color(cx.theme().colors().editor_line_number)
2387 .group("")
2388 .hover(|style| {
2389 style.text_color(
2390 cx.theme().colors().editor_active_line_number,
2391 )
2392 }),
2393 )
2394 .on_click(cx.listener_for(&self.editor, {
2395 let id = *id;
2396 move |editor, _, cx| {
2397 editor.expand_excerpt(
2398 id,
2399 multi_buffer::ExpandExcerptDirection::Down,
2400 cx,
2401 );
2402 }
2403 }))
2404 .tooltip({
2405 move |cx| {
2406 Tooltip::for_action(
2407 "Expand Excerpt",
2408 &ExpandExcerpts { lines: 0 },
2409 cx,
2410 )
2411 }
2412 }),
2413 ),
2414 );
2415 element.into_any()
2416 }
2417 };
2418
2419 // Discover the element's content height, then round up to the nearest multiple of line height.
2420 let preliminary_size =
2421 element.layout_as_root(size(available_width, AvailableSpace::MinContent), cx);
2422 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2423 let final_size = if preliminary_size.height == quantized_height {
2424 preliminary_size
2425 } else {
2426 element.layout_as_root(size(available_width, quantized_height.into()), cx)
2427 };
2428
2429 if let BlockId::Custom(custom_block_id) = block_id {
2430 if block.height() > 0 {
2431 let element_height_in_lines =
2432 ((final_size.height / line_height).ceil() as u32).max(1);
2433 if element_height_in_lines != block.height() {
2434 resized_blocks.insert(custom_block_id, element_height_in_lines);
2435 }
2436 }
2437 }
2438
2439 (element, final_size)
2440 }
2441
2442 #[allow(clippy::too_many_arguments)]
2443 fn render_blocks(
2444 &self,
2445 rows: Range<DisplayRow>,
2446 snapshot: &EditorSnapshot,
2447 hitbox: &Hitbox,
2448 text_hitbox: &Hitbox,
2449 editor_width: Pixels,
2450 scroll_width: &mut Pixels,
2451 gutter_dimensions: &GutterDimensions,
2452 em_width: Pixels,
2453 text_x: Pixels,
2454 line_height: Pixels,
2455 line_layouts: &[LineWithInvisibles],
2456 cx: &mut WindowContext,
2457 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2458 let (fixed_blocks, non_fixed_blocks) = snapshot
2459 .blocks_in_range(rows.clone())
2460 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2461
2462 let mut focused_block = self
2463 .editor
2464 .update(cx, |editor, _| editor.take_focused_block());
2465 let mut fixed_block_max_width = Pixels::ZERO;
2466 let mut blocks = Vec::new();
2467 let mut resized_blocks = HashMap::default();
2468
2469 for (row, block) in fixed_blocks {
2470 let block_id = block.id();
2471
2472 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2473 focused_block = None;
2474 }
2475
2476 let (element, element_size) = self.render_block(
2477 block,
2478 AvailableSpace::MinContent,
2479 block_id,
2480 row,
2481 snapshot,
2482 text_x,
2483 &rows,
2484 line_layouts,
2485 gutter_dimensions,
2486 line_height,
2487 em_width,
2488 text_hitbox,
2489 editor_width,
2490 scroll_width,
2491 &mut resized_blocks,
2492 cx,
2493 );
2494 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2495 blocks.push(BlockLayout {
2496 id: block_id,
2497 row: Some(row),
2498 element,
2499 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
2500 style: BlockStyle::Fixed,
2501 });
2502 }
2503 for (row, block) in non_fixed_blocks {
2504 let style = block.style();
2505 let width = match style {
2506 BlockStyle::Sticky => hitbox.size.width,
2507 BlockStyle::Flex => hitbox
2508 .size
2509 .width
2510 .max(fixed_block_max_width)
2511 .max(gutter_dimensions.width + *scroll_width),
2512 BlockStyle::Fixed => unreachable!(),
2513 };
2514 let block_id = block.id();
2515
2516 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2517 focused_block = None;
2518 }
2519
2520 let (element, element_size) = self.render_block(
2521 block,
2522 width.into(),
2523 block_id,
2524 row,
2525 snapshot,
2526 text_x,
2527 &rows,
2528 line_layouts,
2529 gutter_dimensions,
2530 line_height,
2531 em_width,
2532 text_hitbox,
2533 editor_width,
2534 scroll_width,
2535 &mut resized_blocks,
2536 cx,
2537 );
2538
2539 blocks.push(BlockLayout {
2540 id: block_id,
2541 row: Some(row),
2542 element,
2543 available_space: size(width.into(), element_size.height.into()),
2544 style,
2545 });
2546 }
2547
2548 if let Some(focused_block) = focused_block {
2549 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2550 if focus_handle.is_focused(cx) {
2551 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2552 let style = block.style();
2553 let width = match style {
2554 BlockStyle::Fixed => AvailableSpace::MinContent,
2555 BlockStyle::Flex => AvailableSpace::Definite(
2556 hitbox
2557 .size
2558 .width
2559 .max(fixed_block_max_width)
2560 .max(gutter_dimensions.width + *scroll_width),
2561 ),
2562 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2563 };
2564
2565 let (element, element_size) = self.render_block(
2566 &block,
2567 width,
2568 focused_block.id,
2569 rows.end,
2570 snapshot,
2571 text_x,
2572 &rows,
2573 line_layouts,
2574 gutter_dimensions,
2575 line_height,
2576 em_width,
2577 text_hitbox,
2578 editor_width,
2579 scroll_width,
2580 &mut resized_blocks,
2581 cx,
2582 );
2583
2584 blocks.push(BlockLayout {
2585 id: block.id(),
2586 row: None,
2587 element,
2588 available_space: size(width, element_size.height.into()),
2589 style,
2590 });
2591 }
2592 }
2593 }
2594 }
2595
2596 if resized_blocks.is_empty() {
2597 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2598 Ok(blocks)
2599 } else {
2600 Err(resized_blocks)
2601 }
2602 }
2603
2604 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
2605 /// a restart of rendering for the editor based on the new sizes.
2606 fn layout_blocks(
2607 &self,
2608 blocks: &mut Vec<BlockLayout>,
2609 hitbox: &Hitbox,
2610 line_height: Pixels,
2611 scroll_pixel_position: gpui::Point<Pixels>,
2612 cx: &mut WindowContext,
2613 ) {
2614 for block in blocks {
2615 let mut origin = if let Some(row) = block.row {
2616 hitbox.origin
2617 + point(
2618 Pixels::ZERO,
2619 row.as_f32() * line_height - scroll_pixel_position.y,
2620 )
2621 } else {
2622 // Position the block outside the visible area
2623 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2624 };
2625
2626 if !matches!(block.style, BlockStyle::Sticky) {
2627 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2628 }
2629
2630 let focus_handle = block
2631 .element
2632 .prepaint_as_root(origin, block.available_space, cx);
2633
2634 if let Some(focus_handle) = focus_handle {
2635 self.editor.update(cx, |editor, _cx| {
2636 editor.set_focused_block(FocusedBlock {
2637 id: block.id,
2638 focus_handle: focus_handle.downgrade(),
2639 });
2640 });
2641 }
2642 }
2643 }
2644
2645 #[allow(clippy::too_many_arguments)]
2646 fn layout_context_menu(
2647 &self,
2648 line_height: Pixels,
2649 hitbox: &Hitbox,
2650 text_hitbox: &Hitbox,
2651 content_origin: gpui::Point<Pixels>,
2652 start_row: DisplayRow,
2653 scroll_pixel_position: gpui::Point<Pixels>,
2654 line_layouts: &[LineWithInvisibles],
2655 newest_selection_head: DisplayPoint,
2656 gutter_overshoot: Pixels,
2657 cx: &mut WindowContext,
2658 ) -> bool {
2659 let max_height = cmp::min(
2660 12. * line_height,
2661 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
2662 );
2663 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
2664 if editor.context_menu_visible() {
2665 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
2666 } else {
2667 None
2668 }
2669 }) else {
2670 return false;
2671 };
2672
2673 let context_menu_size = context_menu.layout_as_root(AvailableSpace::min_size(), cx);
2674
2675 let (x, y) = match position {
2676 crate::ContextMenuOrigin::EditorPoint(point) => {
2677 let cursor_row_layout = &line_layouts[point.row().minus(start_row) as usize];
2678 let x = cursor_row_layout.x_for_index(point.column() as usize)
2679 - scroll_pixel_position.x;
2680 let y = point.row().next_row().as_f32() * line_height - scroll_pixel_position.y;
2681 (x, y)
2682 }
2683 crate::ContextMenuOrigin::GutterIndicator(row) => {
2684 // 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
2685 // text field.
2686 let x = -gutter_overshoot;
2687 let y = row.next_row().as_f32() * line_height - scroll_pixel_position.y;
2688 (x, y)
2689 }
2690 };
2691
2692 let mut list_origin = content_origin + point(x, y);
2693 let list_width = context_menu_size.width;
2694 let list_height = context_menu_size.height;
2695
2696 // Snap the right edge of the list to the right edge of the window if
2697 // its horizontal bounds overflow.
2698 if list_origin.x + list_width > cx.viewport_size().width {
2699 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
2700 }
2701
2702 if list_origin.y + list_height > text_hitbox.lower_right().y {
2703 list_origin.y -= line_height + list_height;
2704 }
2705
2706 cx.defer_draw(context_menu, list_origin, 1);
2707 true
2708 }
2709
2710 fn layout_mouse_context_menu(
2711 &self,
2712 editor_snapshot: &EditorSnapshot,
2713 visible_range: Range<DisplayRow>,
2714 cx: &mut WindowContext,
2715 ) -> Option<AnyElement> {
2716 let position = self.editor.update(cx, |editor, cx| {
2717 let visible_start_point = editor.display_to_pixel_point(
2718 DisplayPoint::new(visible_range.start, 0),
2719 editor_snapshot,
2720 cx,
2721 )?;
2722 let visible_end_point = editor.display_to_pixel_point(
2723 DisplayPoint::new(visible_range.end, 0),
2724 editor_snapshot,
2725 cx,
2726 )?;
2727
2728 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2729 let (source_display_point, position) = match mouse_context_menu.position {
2730 MenuPosition::PinnedToScreen(point) => (None, point),
2731 MenuPosition::PinnedToEditor {
2732 source,
2733 offset_x,
2734 offset_y,
2735 } => {
2736 let source_display_point = source.to_display_point(editor_snapshot);
2737 let mut source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
2738 source_point.x += offset_x;
2739 source_point.y += offset_y;
2740 (Some(source_display_point), source_point)
2741 }
2742 };
2743
2744 let source_included = source_display_point.map_or(true, |source_display_point| {
2745 visible_range
2746 .to_inclusive()
2747 .contains(&source_display_point.row())
2748 });
2749 let position_included =
2750 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
2751 if !source_included && !position_included {
2752 None
2753 } else {
2754 Some(position)
2755 }
2756 })?;
2757
2758 let mut element = self.editor.update(cx, |editor, _| {
2759 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2760 let context_menu = mouse_context_menu.context_menu.clone();
2761
2762 Some(
2763 deferred(
2764 anchored()
2765 .position(position)
2766 .child(context_menu)
2767 .anchor(AnchorCorner::TopLeft)
2768 .snap_to_window_with_margin(px(8.)),
2769 )
2770 .with_priority(1)
2771 .into_any(),
2772 )
2773 })?;
2774
2775 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
2776 Some(element)
2777 }
2778
2779 #[allow(clippy::too_many_arguments)]
2780 fn layout_hover_popovers(
2781 &self,
2782 snapshot: &EditorSnapshot,
2783 hitbox: &Hitbox,
2784 text_hitbox: &Hitbox,
2785 visible_display_row_range: Range<DisplayRow>,
2786 content_origin: gpui::Point<Pixels>,
2787 scroll_pixel_position: gpui::Point<Pixels>,
2788 line_layouts: &[LineWithInvisibles],
2789 line_height: Pixels,
2790 em_width: Pixels,
2791 cx: &mut WindowContext,
2792 ) {
2793 struct MeasuredHoverPopover {
2794 element: AnyElement,
2795 size: Size<Pixels>,
2796 horizontal_offset: Pixels,
2797 }
2798
2799 let max_size = size(
2800 (120. * em_width) // Default size
2801 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2802 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2803 (16. * line_height) // Default size
2804 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2805 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2806 );
2807
2808 let hover_popovers = self.editor.update(cx, |editor, cx| {
2809 editor
2810 .hover_state
2811 .render(snapshot, visible_display_row_range.clone(), max_size, cx)
2812 });
2813 let Some((position, hover_popovers)) = hover_popovers else {
2814 return;
2815 };
2816
2817 // This is safe because we check on layout whether the required row is available
2818 let hovered_row_layout =
2819 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
2820
2821 // Compute Hovered Point
2822 let x =
2823 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
2824 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
2825 let hovered_point = content_origin + point(x, y);
2826
2827 let mut overall_height = Pixels::ZERO;
2828 let mut measured_hover_popovers = Vec::new();
2829 for mut hover_popover in hover_popovers {
2830 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
2831 let horizontal_offset =
2832 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
2833
2834 overall_height += HOVER_POPOVER_GAP + size.height;
2835
2836 measured_hover_popovers.push(MeasuredHoverPopover {
2837 element: hover_popover,
2838 size,
2839 horizontal_offset,
2840 });
2841 }
2842 overall_height += HOVER_POPOVER_GAP;
2843
2844 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
2845 let mut occlusion = div()
2846 .size_full()
2847 .occlude()
2848 .on_mouse_move(|_, cx| cx.stop_propagation())
2849 .into_any_element();
2850 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
2851 cx.defer_draw(occlusion, origin, 2);
2852 }
2853
2854 if hovered_point.y > overall_height {
2855 // There is enough space above. Render popovers above the hovered point
2856 let mut current_y = hovered_point.y;
2857 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2858 let size = popover.size;
2859 let popover_origin = point(
2860 hovered_point.x + popover.horizontal_offset,
2861 current_y - size.height,
2862 );
2863
2864 cx.defer_draw(popover.element, popover_origin, 2);
2865 if position != itertools::Position::Last {
2866 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
2867 draw_occluder(size.width, origin, cx);
2868 }
2869
2870 current_y = popover_origin.y - HOVER_POPOVER_GAP;
2871 }
2872 } else {
2873 // There is not enough space above. Render popovers below the hovered point
2874 let mut current_y = hovered_point.y + line_height;
2875 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2876 let size = popover.size;
2877 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
2878
2879 cx.defer_draw(popover.element, popover_origin, 2);
2880 if position != itertools::Position::Last {
2881 let origin = point(popover_origin.x, popover_origin.y + size.height);
2882 draw_occluder(size.width, origin, cx);
2883 }
2884
2885 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
2886 }
2887 }
2888 }
2889
2890 #[allow(clippy::too_many_arguments)]
2891 fn layout_signature_help(
2892 &self,
2893 hitbox: &Hitbox,
2894 content_origin: gpui::Point<Pixels>,
2895 scroll_pixel_position: gpui::Point<Pixels>,
2896 newest_selection_head: Option<DisplayPoint>,
2897 start_row: DisplayRow,
2898 line_layouts: &[LineWithInvisibles],
2899 line_height: Pixels,
2900 em_width: Pixels,
2901 cx: &mut WindowContext,
2902 ) {
2903 if !self.editor.focus_handle(cx).is_focused(cx) {
2904 return;
2905 }
2906 let Some(newest_selection_head) = newest_selection_head else {
2907 return;
2908 };
2909 let selection_row = newest_selection_head.row();
2910 if selection_row < start_row {
2911 return;
2912 }
2913 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
2914 else {
2915 return;
2916 };
2917
2918 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
2919 - scroll_pixel_position.x
2920 + content_origin.x;
2921 let start_y =
2922 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
2923
2924 let max_size = size(
2925 (120. * em_width) // Default size
2926 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2927 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2928 (16. * line_height) // Default size
2929 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2930 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2931 );
2932
2933 let maybe_element = self.editor.update(cx, |editor, cx| {
2934 if let Some(popover) = editor.signature_help_state.popover_mut() {
2935 let element = popover.render(
2936 &self.style,
2937 max_size,
2938 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2939 cx,
2940 );
2941 Some(element)
2942 } else {
2943 None
2944 }
2945 });
2946 if let Some(mut element) = maybe_element {
2947 let window_size = cx.viewport_size();
2948 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
2949 let mut point = point(start_x, start_y - size.height);
2950
2951 // Adjusting to ensure the popover does not overflow in the X-axis direction.
2952 if point.x + size.width >= window_size.width {
2953 point.x = window_size.width - size.width;
2954 }
2955
2956 cx.defer_draw(element, point, 1)
2957 }
2958 }
2959
2960 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
2961 cx.paint_layer(layout.hitbox.bounds, |cx| {
2962 let scroll_top = layout.position_map.snapshot.scroll_position().y;
2963 let gutter_bg = cx.theme().colors().editor_gutter_background;
2964 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
2965 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
2966
2967 if let EditorMode::Full = layout.mode {
2968 let mut active_rows = layout.active_rows.iter().peekable();
2969 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
2970 let mut end_row = start_row.0;
2971 while active_rows
2972 .peek()
2973 .map_or(false, |(active_row, has_selection)| {
2974 active_row.0 == end_row + 1
2975 && *has_selection == contains_non_empty_selection
2976 })
2977 {
2978 active_rows.next().unwrap();
2979 end_row += 1;
2980 }
2981
2982 if !contains_non_empty_selection {
2983 let highlight_h_range =
2984 match layout.position_map.snapshot.current_line_highlight {
2985 CurrentLineHighlight::Gutter => Some(Range {
2986 start: layout.hitbox.left(),
2987 end: layout.gutter_hitbox.right(),
2988 }),
2989 CurrentLineHighlight::Line => Some(Range {
2990 start: layout.text_hitbox.bounds.left(),
2991 end: layout.text_hitbox.bounds.right(),
2992 }),
2993 CurrentLineHighlight::All => Some(Range {
2994 start: layout.hitbox.left(),
2995 end: layout.hitbox.right(),
2996 }),
2997 CurrentLineHighlight::None => None,
2998 };
2999 if let Some(range) = highlight_h_range {
3000 let active_line_bg = cx.theme().colors().editor_active_line_background;
3001 let bounds = Bounds {
3002 origin: point(
3003 range.start,
3004 layout.hitbox.origin.y
3005 + (start_row.as_f32() - scroll_top)
3006 * layout.position_map.line_height,
3007 ),
3008 size: size(
3009 range.end - range.start,
3010 layout.position_map.line_height
3011 * (end_row - start_row.0 + 1) as f32,
3012 ),
3013 };
3014 cx.paint_quad(fill(bounds, active_line_bg));
3015 }
3016 }
3017 }
3018
3019 let mut paint_highlight =
3020 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
3021 let origin = point(
3022 layout.hitbox.origin.x,
3023 layout.hitbox.origin.y
3024 + (highlight_row_start.as_f32() - scroll_top)
3025 * layout.position_map.line_height,
3026 );
3027 let size = size(
3028 layout.hitbox.size.width,
3029 layout.position_map.line_height
3030 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
3031 );
3032 cx.paint_quad(fill(Bounds { origin, size }, color));
3033 };
3034
3035 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
3036 for (&new_row, &new_color) in &layout.highlighted_rows {
3037 match &mut current_paint {
3038 Some((current_color, current_range)) => {
3039 let current_color = *current_color;
3040 let new_range_started = current_color != new_color
3041 || current_range.end.next_row() != new_row;
3042 if new_range_started {
3043 paint_highlight(
3044 current_range.start,
3045 current_range.end,
3046 current_color,
3047 );
3048 current_paint = Some((new_color, new_row..new_row));
3049 continue;
3050 } else {
3051 current_range.end = current_range.end.next_row();
3052 }
3053 }
3054 None => current_paint = Some((new_color, new_row..new_row)),
3055 };
3056 }
3057 if let Some((color, range)) = current_paint {
3058 paint_highlight(range.start, range.end, color);
3059 }
3060
3061 let scroll_left =
3062 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
3063
3064 for (wrap_position, active) in layout.wrap_guides.iter() {
3065 let x = (layout.text_hitbox.origin.x
3066 + *wrap_position
3067 + layout.position_map.em_width / 2.)
3068 - scroll_left;
3069
3070 let show_scrollbars = layout
3071 .scrollbar_layout
3072 .as_ref()
3073 .map_or(false, |scrollbar| scrollbar.visible);
3074 if x < layout.text_hitbox.origin.x
3075 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
3076 {
3077 continue;
3078 }
3079
3080 let color = if *active {
3081 cx.theme().colors().editor_active_wrap_guide
3082 } else {
3083 cx.theme().colors().editor_wrap_guide
3084 };
3085 cx.paint_quad(fill(
3086 Bounds {
3087 origin: point(x, layout.text_hitbox.origin.y),
3088 size: size(px(1.), layout.text_hitbox.size.height),
3089 },
3090 color,
3091 ));
3092 }
3093 }
3094 })
3095 }
3096
3097 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3098 let Some(indent_guides) = &layout.indent_guides else {
3099 return;
3100 };
3101
3102 let faded_color = |color: Hsla, alpha: f32| {
3103 let mut faded = color;
3104 faded.a = alpha;
3105 faded
3106 };
3107
3108 for indent_guide in indent_guides {
3109 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3110 let settings = indent_guide.settings;
3111
3112 // TODO fixed for now, expose them through themes later
3113 const INDENT_AWARE_ALPHA: f32 = 0.2;
3114 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3115 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3116 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3117
3118 let line_color = match (settings.coloring, indent_guide.active) {
3119 (IndentGuideColoring::Disabled, _) => None,
3120 (IndentGuideColoring::Fixed, false) => {
3121 Some(cx.theme().colors().editor_indent_guide)
3122 }
3123 (IndentGuideColoring::Fixed, true) => {
3124 Some(cx.theme().colors().editor_indent_guide_active)
3125 }
3126 (IndentGuideColoring::IndentAware, false) => {
3127 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3128 }
3129 (IndentGuideColoring::IndentAware, true) => {
3130 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3131 }
3132 };
3133
3134 let background_color = match (settings.background_coloring, indent_guide.active) {
3135 (IndentGuideBackgroundColoring::Disabled, _) => None,
3136 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3137 indent_accent_colors,
3138 INDENT_AWARE_BACKGROUND_ALPHA,
3139 )),
3140 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3141 indent_accent_colors,
3142 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3143 )),
3144 };
3145
3146 let requested_line_width = if indent_guide.active {
3147 settings.active_line_width
3148 } else {
3149 settings.line_width
3150 }
3151 .clamp(1, 10);
3152 let mut line_indicator_width = 0.;
3153 if let Some(color) = line_color {
3154 cx.paint_quad(fill(
3155 Bounds {
3156 origin: indent_guide.origin,
3157 size: size(px(requested_line_width as f32), indent_guide.length),
3158 },
3159 color,
3160 ));
3161 line_indicator_width = requested_line_width as f32;
3162 }
3163
3164 if let Some(color) = background_color {
3165 let width = indent_guide.single_indent_width - px(line_indicator_width);
3166 cx.paint_quad(fill(
3167 Bounds {
3168 origin: point(
3169 indent_guide.origin.x + px(line_indicator_width),
3170 indent_guide.origin.y,
3171 ),
3172 size: size(width, indent_guide.length),
3173 },
3174 color,
3175 ));
3176 }
3177 }
3178 }
3179
3180 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3181 let line_height = layout.position_map.line_height;
3182 let scroll_position = layout.position_map.snapshot.scroll_position();
3183 let scroll_top = scroll_position.y * line_height;
3184
3185 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3186
3187 for (ix, line) in layout.line_numbers.iter().enumerate() {
3188 if let Some(line) = line {
3189 let line_origin = layout.gutter_hitbox.origin
3190 + point(
3191 layout.gutter_hitbox.size.width
3192 - line.width
3193 - layout.gutter_dimensions.right_padding,
3194 ix as f32 * line_height - (scroll_top % line_height),
3195 );
3196
3197 line.paint(line_origin, line_height, cx).log_err();
3198 }
3199 }
3200 }
3201
3202 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
3203 if layout.display_hunks.is_empty() {
3204 return;
3205 }
3206
3207 let line_height = layout.position_map.line_height;
3208 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3209 for (hunk, hitbox) in &layout.display_hunks {
3210 let hunk_to_paint = match hunk {
3211 DisplayDiffHunk::Folded { .. } => {
3212 let hunk_bounds = Self::diff_hunk_bounds(
3213 &layout.position_map.snapshot,
3214 line_height,
3215 layout.gutter_hitbox.bounds,
3216 hunk,
3217 );
3218 Some((
3219 hunk_bounds,
3220 cx.theme().status().modified,
3221 Corners::all(px(0.)),
3222 ))
3223 }
3224 DisplayDiffHunk::Unfolded { status, .. } => {
3225 hitbox.as_ref().map(|hunk_hitbox| match status {
3226 DiffHunkStatus::Added => (
3227 hunk_hitbox.bounds,
3228 cx.theme().status().created,
3229 Corners::all(px(0.)),
3230 ),
3231 DiffHunkStatus::Modified => (
3232 hunk_hitbox.bounds,
3233 cx.theme().status().modified,
3234 Corners::all(px(0.)),
3235 ),
3236 DiffHunkStatus::Removed => (
3237 Bounds::new(
3238 point(
3239 hunk_hitbox.origin.x - hunk_hitbox.size.width,
3240 hunk_hitbox.origin.y,
3241 ),
3242 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
3243 ),
3244 cx.theme().status().deleted,
3245 Corners::all(1. * line_height),
3246 ),
3247 })
3248 }
3249 };
3250
3251 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
3252 cx.paint_quad(quad(
3253 hunk_bounds,
3254 corner_radii,
3255 background_color,
3256 Edges::default(),
3257 transparent_black(),
3258 ));
3259 }
3260 }
3261 });
3262 }
3263
3264 pub(super) fn diff_hunk_bounds(
3265 snapshot: &EditorSnapshot,
3266 line_height: Pixels,
3267 gutter_bounds: Bounds<Pixels>,
3268 hunk: &DisplayDiffHunk,
3269 ) -> Bounds<Pixels> {
3270 let scroll_position = snapshot.scroll_position();
3271 let scroll_top = scroll_position.y * line_height;
3272
3273 match hunk {
3274 DisplayDiffHunk::Folded { display_row, .. } => {
3275 let start_y = display_row.as_f32() * line_height - scroll_top;
3276 let end_y = start_y + line_height;
3277
3278 let width = Self::diff_hunk_strip_width(line_height);
3279 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3280 let highlight_size = size(width, end_y - start_y);
3281 Bounds::new(highlight_origin, highlight_size)
3282 }
3283 DisplayDiffHunk::Unfolded {
3284 display_row_range,
3285 status,
3286 ..
3287 } => match status {
3288 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
3289 let start_row = display_row_range.start;
3290 let end_row = display_row_range.end;
3291 // If we're in a multibuffer, row range span might include an
3292 // excerpt header, so if we were to draw the marker straight away,
3293 // the hunk might include the rows of that header.
3294 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
3295 // Instead, we simply check whether the range we're dealing with includes
3296 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
3297 let end_row_in_current_excerpt = snapshot
3298 .blocks_in_range(start_row..end_row)
3299 .find_map(|(start_row, block)| {
3300 if matches!(block, Block::ExcerptHeader { .. }) {
3301 Some(start_row)
3302 } else {
3303 None
3304 }
3305 })
3306 .unwrap_or(end_row);
3307
3308 let start_y = start_row.as_f32() * line_height - scroll_top;
3309 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
3310
3311 let width = Self::diff_hunk_strip_width(line_height);
3312 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3313 let highlight_size = size(width, end_y - start_y);
3314 Bounds::new(highlight_origin, highlight_size)
3315 }
3316 DiffHunkStatus::Removed => {
3317 let row = display_row_range.start;
3318
3319 let offset = line_height / 2.;
3320 let start_y = row.as_f32() * line_height - offset - scroll_top;
3321 let end_y = start_y + line_height;
3322
3323 let width = (0.35 * line_height).floor();
3324 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3325 let highlight_size = size(width, end_y - start_y);
3326 Bounds::new(highlight_origin, highlight_size)
3327 }
3328 },
3329 }
3330 }
3331
3332 /// Returns the width of the diff strip that will be displayed in the gutter.
3333 pub(super) fn diff_hunk_strip_width(line_height: Pixels) -> Pixels {
3334 // We floor the value to prevent pixel rounding.
3335 (0.275 * line_height).floor()
3336 }
3337
3338 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3339 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3340 cx.with_element_namespace("gutter_fold_toggles", |cx| {
3341 for fold_indicator in layout.gutter_fold_toggles.iter_mut().flatten() {
3342 fold_indicator.paint(cx);
3343 }
3344 });
3345
3346 for test_indicator in layout.test_indicators.iter_mut() {
3347 test_indicator.paint(cx);
3348 }
3349
3350 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
3351 indicator.paint(cx);
3352 }
3353 });
3354 }
3355
3356 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3357 for (_, hunk_hitbox) in &layout.display_hunks {
3358 if let Some(hunk_hitbox) = hunk_hitbox {
3359 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
3360 }
3361 }
3362
3363 let show_git_gutter = layout
3364 .position_map
3365 .snapshot
3366 .show_git_diff_gutter
3367 .unwrap_or_else(|| {
3368 matches!(
3369 ProjectSettings::get_global(cx).git.git_gutter,
3370 Some(GitGutterSetting::TrackedFiles)
3371 )
3372 });
3373 if show_git_gutter {
3374 Self::paint_diff_hunks(layout, cx)
3375 }
3376
3377 let highlight_width = 0.275 * layout.position_map.line_height;
3378 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
3379 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3380 for (range, color) in &layout.highlighted_gutter_ranges {
3381 let start_row = if range.start.row() < layout.visible_display_row_range.start {
3382 layout.visible_display_row_range.start - DisplayRow(1)
3383 } else {
3384 range.start.row()
3385 };
3386 let end_row = if range.end.row() > layout.visible_display_row_range.end {
3387 layout.visible_display_row_range.end + DisplayRow(1)
3388 } else {
3389 range.end.row()
3390 };
3391
3392 let start_y = layout.gutter_hitbox.top()
3393 + start_row.0 as f32 * layout.position_map.line_height
3394 - layout.position_map.scroll_pixel_position.y;
3395 let end_y = layout.gutter_hitbox.top()
3396 + (end_row.0 + 1) as f32 * layout.position_map.line_height
3397 - layout.position_map.scroll_pixel_position.y;
3398 let bounds = Bounds::from_corners(
3399 point(layout.gutter_hitbox.left(), start_y),
3400 point(layout.gutter_hitbox.left() + highlight_width, end_y),
3401 );
3402 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
3403 }
3404 });
3405 }
3406
3407 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3408 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
3409 return;
3410 };
3411
3412 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3413 for mut blame_element in blamed_display_rows.into_iter() {
3414 blame_element.paint(cx);
3415 }
3416 })
3417 }
3418
3419 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3420 cx.with_content_mask(
3421 Some(ContentMask {
3422 bounds: layout.text_hitbox.bounds,
3423 }),
3424 |cx| {
3425 let cursor_style = if self
3426 .editor
3427 .read(cx)
3428 .hovered_link_state
3429 .as_ref()
3430 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
3431 {
3432 CursorStyle::PointingHand
3433 } else {
3434 CursorStyle::IBeam
3435 };
3436 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
3437
3438 let invisible_display_ranges = self.paint_highlights(layout, cx);
3439 self.paint_lines(&invisible_display_ranges, layout, cx);
3440 self.paint_redactions(layout, cx);
3441 self.paint_cursors(layout, cx);
3442 self.paint_inline_blame(layout, cx);
3443 cx.with_element_namespace("crease_trailers", |cx| {
3444 for trailer in layout.crease_trailers.iter_mut().flatten() {
3445 trailer.element.paint(cx);
3446 }
3447 });
3448 },
3449 )
3450 }
3451
3452 fn paint_highlights(
3453 &mut self,
3454 layout: &mut EditorLayout,
3455 cx: &mut WindowContext,
3456 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
3457 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3458 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
3459 let line_end_overshoot = 0.15 * layout.position_map.line_height;
3460 for (range, color) in &layout.highlighted_ranges {
3461 self.paint_highlighted_range(
3462 range.clone(),
3463 *color,
3464 Pixels::ZERO,
3465 line_end_overshoot,
3466 layout,
3467 cx,
3468 );
3469 }
3470
3471 let corner_radius = 0.15 * layout.position_map.line_height;
3472
3473 for (player_color, selections) in &layout.selections {
3474 for selection in selections.iter() {
3475 self.paint_highlighted_range(
3476 selection.range.clone(),
3477 player_color.selection,
3478 corner_radius,
3479 corner_radius * 2.,
3480 layout,
3481 cx,
3482 );
3483
3484 if selection.is_local && !selection.range.is_empty() {
3485 invisible_display_ranges.push(selection.range.clone());
3486 }
3487 }
3488 }
3489 invisible_display_ranges
3490 })
3491 }
3492
3493 fn paint_lines(
3494 &mut self,
3495 invisible_display_ranges: &[Range<DisplayPoint>],
3496 layout: &mut EditorLayout,
3497 cx: &mut WindowContext,
3498 ) {
3499 let whitespace_setting = self
3500 .editor
3501 .read(cx)
3502 .buffer
3503 .read(cx)
3504 .settings_at(0, cx)
3505 .show_whitespaces;
3506
3507 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
3508 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
3509 line_with_invisibles.draw(
3510 layout,
3511 row,
3512 layout.content_origin,
3513 whitespace_setting,
3514 invisible_display_ranges,
3515 cx,
3516 )
3517 }
3518
3519 for line_element in &mut layout.line_elements {
3520 line_element.paint(cx);
3521 }
3522 }
3523
3524 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3525 if layout.redacted_ranges.is_empty() {
3526 return;
3527 }
3528
3529 let line_end_overshoot = layout.line_end_overshoot();
3530
3531 // A softer than perfect black
3532 let redaction_color = gpui::rgb(0x0e1111);
3533
3534 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3535 for range in layout.redacted_ranges.iter() {
3536 self.paint_highlighted_range(
3537 range.clone(),
3538 redaction_color.into(),
3539 Pixels::ZERO,
3540 line_end_overshoot,
3541 layout,
3542 cx,
3543 );
3544 }
3545 });
3546 }
3547
3548 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3549 for cursor in &mut layout.visible_cursors {
3550 cursor.paint(layout.content_origin, cx);
3551 }
3552 }
3553
3554 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3555 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
3556 return;
3557 };
3558
3559 let thumb_bounds = scrollbar_layout.thumb_bounds();
3560 if scrollbar_layout.visible {
3561 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
3562 cx.paint_quad(quad(
3563 scrollbar_layout.hitbox.bounds,
3564 Corners::default(),
3565 cx.theme().colors().scrollbar_track_background,
3566 Edges {
3567 top: Pixels::ZERO,
3568 right: Pixels::ZERO,
3569 bottom: Pixels::ZERO,
3570 left: ScrollbarLayout::BORDER_WIDTH,
3571 },
3572 cx.theme().colors().scrollbar_track_border,
3573 ));
3574
3575 let fast_markers =
3576 self.collect_fast_scrollbar_markers(layout, scrollbar_layout, cx);
3577 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
3578 self.refresh_slow_scrollbar_markers(layout, scrollbar_layout, cx);
3579
3580 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
3581 for marker in markers.iter().chain(&fast_markers) {
3582 let mut marker = marker.clone();
3583 marker.bounds.origin += scrollbar_layout.hitbox.origin;
3584 cx.paint_quad(marker);
3585 }
3586
3587 cx.paint_quad(quad(
3588 thumb_bounds,
3589 Corners::default(),
3590 cx.theme().colors().scrollbar_thumb_background,
3591 Edges {
3592 top: Pixels::ZERO,
3593 right: Pixels::ZERO,
3594 bottom: Pixels::ZERO,
3595 left: ScrollbarLayout::BORDER_WIDTH,
3596 },
3597 cx.theme().colors().scrollbar_thumb_border,
3598 ));
3599 });
3600 }
3601
3602 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
3603
3604 let row_height = scrollbar_layout.row_height;
3605 let row_range = scrollbar_layout.visible_row_range.clone();
3606
3607 cx.on_mouse_event({
3608 let editor = self.editor.clone();
3609 let hitbox = scrollbar_layout.hitbox.clone();
3610 let mut mouse_position = cx.mouse_position();
3611 move |event: &MouseMoveEvent, phase, cx| {
3612 if phase == DispatchPhase::Capture {
3613 return;
3614 }
3615
3616 editor.update(cx, |editor, cx| {
3617 if event.pressed_button == Some(MouseButton::Left)
3618 && editor.scroll_manager.is_dragging_scrollbar()
3619 {
3620 let y = mouse_position.y;
3621 let new_y = event.position.y;
3622 if (hitbox.top()..hitbox.bottom()).contains(&y) {
3623 let mut position = editor.scroll_position(cx);
3624 position.y += (new_y - y) / row_height;
3625 if position.y < 0.0 {
3626 position.y = 0.0;
3627 }
3628 editor.set_scroll_position(position, cx);
3629 }
3630
3631 cx.stop_propagation();
3632 } else {
3633 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3634 if hitbox.is_hovered(cx) {
3635 editor.scroll_manager.show_scrollbar(cx);
3636 }
3637 }
3638 mouse_position = event.position;
3639 })
3640 }
3641 });
3642
3643 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
3644 cx.on_mouse_event({
3645 let editor = self.editor.clone();
3646 move |_: &MouseUpEvent, phase, cx| {
3647 if phase == DispatchPhase::Capture {
3648 return;
3649 }
3650
3651 editor.update(cx, |editor, cx| {
3652 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3653 cx.stop_propagation();
3654 });
3655 }
3656 });
3657 } else {
3658 cx.on_mouse_event({
3659 let editor = self.editor.clone();
3660 let hitbox = scrollbar_layout.hitbox.clone();
3661 move |event: &MouseDownEvent, phase, cx| {
3662 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
3663 return;
3664 }
3665
3666 editor.update(cx, |editor, cx| {
3667 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
3668
3669 let y = event.position.y;
3670 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
3671 let center_row = ((y - hitbox.top()) / row_height).round() as u32;
3672 let top_row = center_row
3673 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
3674 let mut position = editor.scroll_position(cx);
3675 position.y = top_row as f32;
3676 editor.set_scroll_position(position, cx);
3677 } else {
3678 editor.scroll_manager.show_scrollbar(cx);
3679 }
3680
3681 cx.stop_propagation();
3682 });
3683 }
3684 });
3685 }
3686 }
3687
3688 fn collect_fast_scrollbar_markers(
3689 &self,
3690 layout: &EditorLayout,
3691 scrollbar_layout: &ScrollbarLayout,
3692 cx: &mut WindowContext,
3693 ) -> Vec<PaintQuad> {
3694 const LIMIT: usize = 100;
3695 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
3696 return vec![];
3697 }
3698 let cursor_ranges = layout
3699 .cursors
3700 .iter()
3701 .map(|(point, color)| ColoredRange {
3702 start: point.row(),
3703 end: point.row(),
3704 color: *color,
3705 })
3706 .collect_vec();
3707 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
3708 }
3709
3710 fn refresh_slow_scrollbar_markers(
3711 &self,
3712 layout: &EditorLayout,
3713 scrollbar_layout: &ScrollbarLayout,
3714 cx: &mut WindowContext,
3715 ) {
3716 self.editor.update(cx, |editor, cx| {
3717 if !editor.is_singleton(cx)
3718 || !editor
3719 .scrollbar_marker_state
3720 .should_refresh(scrollbar_layout.hitbox.size)
3721 {
3722 return;
3723 }
3724
3725 let scrollbar_layout = scrollbar_layout.clone();
3726 let background_highlights = editor.background_highlights.clone();
3727 let snapshot = layout.position_map.snapshot.clone();
3728 let theme = cx.theme().clone();
3729 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
3730
3731 editor.scrollbar_marker_state.dirty = false;
3732 editor.scrollbar_marker_state.pending_refresh =
3733 Some(cx.spawn(|editor, mut cx| async move {
3734 let scrollbar_size = scrollbar_layout.hitbox.size;
3735 let scrollbar_markers = cx
3736 .background_executor()
3737 .spawn(async move {
3738 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
3739 let mut marker_quads = Vec::new();
3740 if scrollbar_settings.git_diff {
3741 let marker_row_ranges = snapshot
3742 .buffer_snapshot
3743 .git_diff_hunks_in_range(
3744 MultiBufferRow::MIN..MultiBufferRow::MAX,
3745 )
3746 .map(|hunk| {
3747 let start_display_row =
3748 MultiBufferPoint::new(hunk.row_range.start.0, 0)
3749 .to_display_point(&snapshot.display_snapshot)
3750 .row();
3751 let mut end_display_row =
3752 MultiBufferPoint::new(hunk.row_range.end.0, 0)
3753 .to_display_point(&snapshot.display_snapshot)
3754 .row();
3755 if end_display_row != start_display_row {
3756 end_display_row.0 -= 1;
3757 }
3758 let color = match hunk_status(&hunk) {
3759 DiffHunkStatus::Added => theme.status().created,
3760 DiffHunkStatus::Modified => theme.status().modified,
3761 DiffHunkStatus::Removed => theme.status().deleted,
3762 };
3763 ColoredRange {
3764 start: start_display_row,
3765 end: end_display_row,
3766 color,
3767 }
3768 });
3769
3770 marker_quads.extend(
3771 scrollbar_layout
3772 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
3773 );
3774 }
3775
3776 for (background_highlight_id, (_, background_ranges)) in
3777 background_highlights.iter()
3778 {
3779 let is_search_highlights = *background_highlight_id
3780 == TypeId::of::<BufferSearchHighlights>();
3781 let is_symbol_occurrences = *background_highlight_id
3782 == TypeId::of::<DocumentHighlightRead>()
3783 || *background_highlight_id
3784 == TypeId::of::<DocumentHighlightWrite>();
3785 if (is_search_highlights && scrollbar_settings.search_results)
3786 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
3787 {
3788 let mut color = theme.status().info;
3789 if is_symbol_occurrences {
3790 color.fade_out(0.5);
3791 }
3792 let marker_row_ranges = background_ranges.iter().map(|range| {
3793 let display_start = range
3794 .start
3795 .to_display_point(&snapshot.display_snapshot);
3796 let display_end =
3797 range.end.to_display_point(&snapshot.display_snapshot);
3798 ColoredRange {
3799 start: display_start.row(),
3800 end: display_end.row(),
3801 color,
3802 }
3803 });
3804 marker_quads.extend(
3805 scrollbar_layout
3806 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
3807 );
3808 }
3809 }
3810
3811 if scrollbar_settings.diagnostics {
3812 let diagnostics = snapshot
3813 .buffer_snapshot
3814 .diagnostics_in_range::<_, Point>(
3815 Point::zero()..max_point,
3816 false,
3817 )
3818 // We want to sort by severity, in order to paint the most severe diagnostics last.
3819 .sorted_by_key(|diagnostic| {
3820 std::cmp::Reverse(diagnostic.diagnostic.severity)
3821 });
3822
3823 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
3824 let start_display = diagnostic
3825 .range
3826 .start
3827 .to_display_point(&snapshot.display_snapshot);
3828 let end_display = diagnostic
3829 .range
3830 .end
3831 .to_display_point(&snapshot.display_snapshot);
3832 let color = match diagnostic.diagnostic.severity {
3833 DiagnosticSeverity::ERROR => theme.status().error,
3834 DiagnosticSeverity::WARNING => theme.status().warning,
3835 DiagnosticSeverity::INFORMATION => theme.status().info,
3836 _ => theme.status().hint,
3837 };
3838 ColoredRange {
3839 start: start_display.row(),
3840 end: end_display.row(),
3841 color,
3842 }
3843 });
3844 marker_quads.extend(
3845 scrollbar_layout
3846 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
3847 );
3848 }
3849
3850 Arc::from(marker_quads)
3851 })
3852 .await;
3853
3854 editor.update(&mut cx, |editor, cx| {
3855 editor.scrollbar_marker_state.markers = scrollbar_markers;
3856 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
3857 editor.scrollbar_marker_state.pending_refresh = None;
3858 cx.notify();
3859 })?;
3860
3861 Ok(())
3862 }));
3863 });
3864 }
3865
3866 #[allow(clippy::too_many_arguments)]
3867 fn paint_highlighted_range(
3868 &self,
3869 range: Range<DisplayPoint>,
3870 color: Hsla,
3871 corner_radius: Pixels,
3872 line_end_overshoot: Pixels,
3873 layout: &EditorLayout,
3874 cx: &mut WindowContext,
3875 ) {
3876 let start_row = layout.visible_display_row_range.start;
3877 let end_row = layout.visible_display_row_range.end;
3878 if range.start != range.end {
3879 let row_range = if range.end.column() == 0 {
3880 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3881 } else {
3882 cmp::max(range.start.row(), start_row)
3883 ..cmp::min(range.end.row().next_row(), end_row)
3884 };
3885
3886 let highlighted_range = HighlightedRange {
3887 color,
3888 line_height: layout.position_map.line_height,
3889 corner_radius,
3890 start_y: layout.content_origin.y
3891 + row_range.start.as_f32() * layout.position_map.line_height
3892 - layout.position_map.scroll_pixel_position.y,
3893 lines: row_range
3894 .iter_rows()
3895 .map(|row| {
3896 let line_layout =
3897 &layout.position_map.line_layouts[row.minus(start_row) as usize];
3898 HighlightedRangeLine {
3899 start_x: if row == range.start.row() {
3900 layout.content_origin.x
3901 + line_layout.x_for_index(range.start.column() as usize)
3902 - layout.position_map.scroll_pixel_position.x
3903 } else {
3904 layout.content_origin.x
3905 - layout.position_map.scroll_pixel_position.x
3906 },
3907 end_x: if row == range.end.row() {
3908 layout.content_origin.x
3909 + line_layout.x_for_index(range.end.column() as usize)
3910 - layout.position_map.scroll_pixel_position.x
3911 } else {
3912 layout.content_origin.x + line_layout.width + line_end_overshoot
3913 - layout.position_map.scroll_pixel_position.x
3914 },
3915 }
3916 })
3917 .collect(),
3918 };
3919
3920 highlighted_range.paint(layout.text_hitbox.bounds, cx);
3921 }
3922 }
3923
3924 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3925 if let Some(mut inline_blame) = layout.inline_blame.take() {
3926 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3927 inline_blame.paint(cx);
3928 })
3929 }
3930 }
3931
3932 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3933 for mut block in layout.blocks.drain(..) {
3934 block.element.paint(cx);
3935 }
3936 }
3937
3938 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3939 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
3940 mouse_context_menu.paint(cx);
3941 }
3942 }
3943
3944 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3945 cx.on_mouse_event({
3946 let position_map = layout.position_map.clone();
3947 let editor = self.editor.clone();
3948 let hitbox = layout.hitbox.clone();
3949 let mut delta = ScrollDelta::default();
3950
3951 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
3952 // accidentally turn off their scrolling.
3953 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
3954
3955 move |event: &ScrollWheelEvent, phase, cx| {
3956 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
3957 delta = delta.coalesce(event.delta);
3958 editor.update(cx, |editor, cx| {
3959 let position_map: &PositionMap = &position_map;
3960
3961 let line_height = position_map.line_height;
3962 let max_glyph_width = position_map.em_width;
3963 let (delta, axis) = match delta {
3964 gpui::ScrollDelta::Pixels(mut pixels) => {
3965 //Trackpad
3966 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
3967 (pixels, axis)
3968 }
3969
3970 gpui::ScrollDelta::Lines(lines) => {
3971 //Not trackpad
3972 let pixels =
3973 point(lines.x * max_glyph_width, lines.y * line_height);
3974 (pixels, None)
3975 }
3976 };
3977
3978 let current_scroll_position = position_map.snapshot.scroll_position();
3979 let x = (current_scroll_position.x * max_glyph_width
3980 - (delta.x * scroll_sensitivity))
3981 / max_glyph_width;
3982 let y = (current_scroll_position.y * line_height
3983 - (delta.y * scroll_sensitivity))
3984 / line_height;
3985 let mut scroll_position =
3986 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
3987 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
3988 if forbid_vertical_scroll {
3989 scroll_position.y = current_scroll_position.y;
3990 }
3991
3992 if scroll_position != current_scroll_position {
3993 editor.scroll(scroll_position, axis, cx);
3994 cx.stop_propagation();
3995 } else if y < 0. {
3996 // Due to clamping, we may fail to detect cases of overscroll to the top;
3997 // We want the scroll manager to get an update in such cases and detect the change of direction
3998 // on the next frame.
3999 cx.notify();
4000 }
4001 });
4002 }
4003 }
4004 });
4005 }
4006
4007 fn paint_mouse_listeners(
4008 &mut self,
4009 layout: &EditorLayout,
4010 hovered_hunk: Option<HoveredHunk>,
4011 cx: &mut WindowContext,
4012 ) {
4013 self.paint_scroll_wheel_listener(layout, cx);
4014
4015 cx.on_mouse_event({
4016 let position_map = layout.position_map.clone();
4017 let editor = self.editor.clone();
4018 let text_hitbox = layout.text_hitbox.clone();
4019 let gutter_hitbox = layout.gutter_hitbox.clone();
4020
4021 move |event: &MouseDownEvent, phase, cx| {
4022 if phase == DispatchPhase::Bubble {
4023 match event.button {
4024 MouseButton::Left => editor.update(cx, |editor, cx| {
4025 Self::mouse_left_down(
4026 editor,
4027 event,
4028 hovered_hunk.clone(),
4029 &position_map,
4030 &text_hitbox,
4031 &gutter_hitbox,
4032 cx,
4033 );
4034 }),
4035 MouseButton::Right => editor.update(cx, |editor, cx| {
4036 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
4037 }),
4038 MouseButton::Middle => editor.update(cx, |editor, cx| {
4039 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
4040 }),
4041 _ => {}
4042 };
4043 }
4044 }
4045 });
4046
4047 cx.on_mouse_event({
4048 let editor = self.editor.clone();
4049 let position_map = layout.position_map.clone();
4050 let text_hitbox = layout.text_hitbox.clone();
4051
4052 move |event: &MouseUpEvent, phase, cx| {
4053 if phase == DispatchPhase::Bubble {
4054 editor.update(cx, |editor, cx| {
4055 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
4056 });
4057 }
4058 }
4059 });
4060 cx.on_mouse_event({
4061 let position_map = layout.position_map.clone();
4062 let editor = self.editor.clone();
4063 let text_hitbox = layout.text_hitbox.clone();
4064 let gutter_hitbox = layout.gutter_hitbox.clone();
4065
4066 move |event: &MouseMoveEvent, phase, cx| {
4067 if phase == DispatchPhase::Bubble {
4068 editor.update(cx, |editor, cx| {
4069 if editor.hover_state.focused(cx) {
4070 return;
4071 }
4072 if event.pressed_button == Some(MouseButton::Left)
4073 || event.pressed_button == Some(MouseButton::Middle)
4074 {
4075 Self::mouse_dragged(
4076 editor,
4077 event,
4078 &position_map,
4079 text_hitbox.bounds,
4080 cx,
4081 )
4082 }
4083
4084 Self::mouse_moved(
4085 editor,
4086 event,
4087 &position_map,
4088 &text_hitbox,
4089 &gutter_hitbox,
4090 cx,
4091 )
4092 });
4093 }
4094 }
4095 });
4096 }
4097
4098 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
4099 bounds.upper_right().x - self.style.scrollbar_width
4100 }
4101
4102 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
4103 let style = &self.style;
4104 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4105 let layout = cx
4106 .text_system()
4107 .shape_line(
4108 SharedString::from(" ".repeat(column)),
4109 font_size,
4110 &[TextRun {
4111 len: column,
4112 font: style.text.font(),
4113 color: Hsla::default(),
4114 background_color: None,
4115 underline: None,
4116 strikethrough: None,
4117 }],
4118 )
4119 .unwrap();
4120
4121 layout.width
4122 }
4123
4124 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
4125 let digit_count = snapshot
4126 .max_buffer_row()
4127 .next_row()
4128 .as_f32()
4129 .log10()
4130 .floor() as usize
4131 + 1;
4132 self.column_pixels(digit_count, cx)
4133 }
4134}
4135
4136#[allow(clippy::too_many_arguments)]
4137fn prepaint_gutter_button(
4138 button: IconButton,
4139 row: DisplayRow,
4140 line_height: Pixels,
4141 gutter_dimensions: &GutterDimensions,
4142 scroll_pixel_position: gpui::Point<Pixels>,
4143 gutter_hitbox: &Hitbox,
4144 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4145 cx: &mut WindowContext<'_>,
4146) -> AnyElement {
4147 let mut button = button.into_any_element();
4148 let available_space = size(
4149 AvailableSpace::MinContent,
4150 AvailableSpace::Definite(line_height),
4151 );
4152 let indicator_size = button.layout_as_root(available_space, cx);
4153
4154 let blame_width = gutter_dimensions.git_blame_entries_width;
4155 let gutter_width = rows_with_hunk_bounds
4156 .get(&row)
4157 .map(|bounds| bounds.size.width);
4158 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
4159
4160 let mut x = left_offset;
4161 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
4162 - indicator_size.width
4163 - left_offset;
4164 x += available_width / 2.;
4165
4166 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
4167 y += (line_height - indicator_size.height) / 2.;
4168
4169 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
4170 button
4171}
4172
4173fn render_inline_blame_entry(
4174 blame: &gpui::Model<GitBlame>,
4175 blame_entry: BlameEntry,
4176 style: &EditorStyle,
4177 workspace: Option<WeakView<Workspace>>,
4178 cx: &mut WindowContext<'_>,
4179) -> AnyElement {
4180 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4181
4182 let author = blame_entry.author.as_deref().unwrap_or_default();
4183 let text = format!("{}, {}", author, relative_timestamp);
4184
4185 let details = blame.read(cx).details_for_entry(&blame_entry);
4186
4187 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
4188
4189 h_flex()
4190 .id("inline-blame")
4191 .w_full()
4192 .font_family(style.text.font().family)
4193 .text_color(cx.theme().status().hint)
4194 .line_height(style.text.line_height)
4195 .child(Icon::new(IconName::FileGit).color(Color::Hint))
4196 .child(text)
4197 .gap_2()
4198 .hoverable_tooltip(move |_| tooltip.clone().into())
4199 .into_any()
4200}
4201
4202fn render_blame_entry(
4203 ix: usize,
4204 blame: &gpui::Model<GitBlame>,
4205 blame_entry: BlameEntry,
4206 style: &EditorStyle,
4207 last_used_color: &mut Option<(PlayerColor, Oid)>,
4208 editor: View<Editor>,
4209 cx: &mut WindowContext<'_>,
4210) -> AnyElement {
4211 let mut sha_color = cx
4212 .theme()
4213 .players()
4214 .color_for_participant(blame_entry.sha.into());
4215 // If the last color we used is the same as the one we get for this line, but
4216 // the commit SHAs are different, then we try again to get a different color.
4217 match *last_used_color {
4218 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
4219 let index: u32 = blame_entry.sha.into();
4220 sha_color = cx.theme().players().color_for_participant(index + 1);
4221 }
4222 _ => {}
4223 };
4224 last_used_color.replace((sha_color, blame_entry.sha));
4225
4226 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4227
4228 let short_commit_id = blame_entry.sha.display_short();
4229
4230 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
4231 let name = util::truncate_and_trailoff(author_name, 20);
4232
4233 let details = blame.read(cx).details_for_entry(&blame_entry);
4234
4235 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
4236
4237 let tooltip = cx.new_view(|_| {
4238 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
4239 });
4240
4241 h_flex()
4242 .w_full()
4243 .font_family(style.text.font().family)
4244 .line_height(style.text.line_height)
4245 .id(("blame", ix))
4246 .children([
4247 div()
4248 .text_color(sha_color.cursor)
4249 .child(short_commit_id)
4250 .mr_2(),
4251 div()
4252 .w_full()
4253 .h_flex()
4254 .justify_between()
4255 .text_color(cx.theme().status().hint)
4256 .child(name)
4257 .child(relative_timestamp),
4258 ])
4259 .on_mouse_down(MouseButton::Right, {
4260 let blame_entry = blame_entry.clone();
4261 let details = details.clone();
4262 move |event, cx| {
4263 deploy_blame_entry_context_menu(
4264 &blame_entry,
4265 details.as_ref(),
4266 editor.clone(),
4267 event.position,
4268 cx,
4269 );
4270 }
4271 })
4272 .hover(|style| style.bg(cx.theme().colors().element_hover))
4273 .when_some(
4274 details.and_then(|details| details.permalink),
4275 |this, url| {
4276 let url = url.clone();
4277 this.cursor_pointer().on_click(move |_, cx| {
4278 cx.stop_propagation();
4279 cx.open_url(url.as_str())
4280 })
4281 },
4282 )
4283 .hoverable_tooltip(move |_| tooltip.clone().into())
4284 .into_any()
4285}
4286
4287fn deploy_blame_entry_context_menu(
4288 blame_entry: &BlameEntry,
4289 details: Option<&CommitDetails>,
4290 editor: View<Editor>,
4291 position: gpui::Point<Pixels>,
4292 cx: &mut WindowContext<'_>,
4293) {
4294 let context_menu = ContextMenu::build(cx, move |menu, _| {
4295 let sha = format!("{}", blame_entry.sha);
4296 menu.on_blur_subscription(Subscription::new(|| {}))
4297 .entry("Copy commit SHA", None, move |cx| {
4298 cx.write_to_clipboard(ClipboardItem::new_string(sha.clone()));
4299 })
4300 .when_some(
4301 details.and_then(|details| details.permalink.clone()),
4302 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
4303 )
4304 });
4305
4306 editor.update(cx, move |editor, cx| {
4307 editor.mouse_context_menu = Some(MouseContextMenu::pinned_to_screen(
4308 position,
4309 context_menu,
4310 cx,
4311 ));
4312 cx.notify();
4313 });
4314}
4315
4316#[derive(Debug)]
4317pub(crate) struct LineWithInvisibles {
4318 fragments: SmallVec<[LineFragment; 1]>,
4319 invisibles: Vec<Invisible>,
4320 len: usize,
4321 width: Pixels,
4322 font_size: Pixels,
4323}
4324
4325#[allow(clippy::large_enum_variant)]
4326enum LineFragment {
4327 Text(ShapedLine),
4328 Element {
4329 element: Option<AnyElement>,
4330 size: Size<Pixels>,
4331 len: usize,
4332 },
4333}
4334
4335impl fmt::Debug for LineFragment {
4336 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
4337 match self {
4338 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
4339 LineFragment::Element { size, len, .. } => f
4340 .debug_struct("Element")
4341 .field("size", size)
4342 .field("len", len)
4343 .finish(),
4344 }
4345 }
4346}
4347
4348impl LineWithInvisibles {
4349 #[allow(clippy::too_many_arguments)]
4350 fn from_chunks<'a>(
4351 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
4352 text_style: &TextStyle,
4353 max_line_len: usize,
4354 max_line_count: usize,
4355 line_number_layouts: &[Option<ShapedLine>],
4356 editor_mode: EditorMode,
4357 text_width: Pixels,
4358 cx: &mut WindowContext,
4359 ) -> Vec<Self> {
4360 let mut layouts = Vec::with_capacity(max_line_count);
4361 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
4362 let mut line = String::new();
4363 let mut invisibles = Vec::new();
4364 let mut width = Pixels::ZERO;
4365 let mut len = 0;
4366 let mut styles = Vec::new();
4367 let mut non_whitespace_added = false;
4368 let mut row = 0;
4369 let mut line_exceeded_max_len = false;
4370 let font_size = text_style.font_size.to_pixels(cx.rem_size());
4371
4372 let ellipsis = SharedString::from("⋯");
4373
4374 for highlighted_chunk in chunks.chain([HighlightedChunk {
4375 text: "\n",
4376 style: None,
4377 is_tab: false,
4378 renderer: None,
4379 }]) {
4380 if let Some(renderer) = highlighted_chunk.renderer {
4381 if !line.is_empty() {
4382 let shaped_line = cx
4383 .text_system()
4384 .shape_line(line.clone().into(), font_size, &styles)
4385 .unwrap();
4386 width += shaped_line.width;
4387 len += shaped_line.len;
4388 fragments.push(LineFragment::Text(shaped_line));
4389 line.clear();
4390 styles.clear();
4391 }
4392
4393 let available_width = if renderer.constrain_width {
4394 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
4395 ellipsis.clone()
4396 } else {
4397 SharedString::from(Arc::from(highlighted_chunk.text))
4398 };
4399 let shaped_line = cx
4400 .text_system()
4401 .shape_line(
4402 chunk,
4403 font_size,
4404 &[text_style.to_run(highlighted_chunk.text.len())],
4405 )
4406 .unwrap();
4407 AvailableSpace::Definite(shaped_line.width)
4408 } else {
4409 AvailableSpace::MinContent
4410 };
4411
4412 let mut element = (renderer.render)(&mut ChunkRendererContext {
4413 context: cx,
4414 max_width: text_width,
4415 });
4416 let line_height = text_style.line_height_in_pixels(cx.rem_size());
4417 let size = element.layout_as_root(
4418 size(available_width, AvailableSpace::Definite(line_height)),
4419 cx,
4420 );
4421
4422 width += size.width;
4423 len += highlighted_chunk.text.len();
4424 fragments.push(LineFragment::Element {
4425 element: Some(element),
4426 size,
4427 len: highlighted_chunk.text.len(),
4428 });
4429 } else {
4430 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
4431 if ix > 0 {
4432 let shaped_line = cx
4433 .text_system()
4434 .shape_line(line.clone().into(), font_size, &styles)
4435 .unwrap();
4436 width += shaped_line.width;
4437 len += shaped_line.len;
4438 fragments.push(LineFragment::Text(shaped_line));
4439 layouts.push(Self {
4440 width: mem::take(&mut width),
4441 len: mem::take(&mut len),
4442 fragments: mem::take(&mut fragments),
4443 invisibles: std::mem::take(&mut invisibles),
4444 font_size,
4445 });
4446
4447 line.clear();
4448 styles.clear();
4449 row += 1;
4450 line_exceeded_max_len = false;
4451 non_whitespace_added = false;
4452 if row == max_line_count {
4453 return layouts;
4454 }
4455 }
4456
4457 if !line_chunk.is_empty() && !line_exceeded_max_len {
4458 let text_style = if let Some(style) = highlighted_chunk.style {
4459 Cow::Owned(text_style.clone().highlight(style))
4460 } else {
4461 Cow::Borrowed(text_style)
4462 };
4463
4464 if line.len() + line_chunk.len() > max_line_len {
4465 let mut chunk_len = max_line_len - line.len();
4466 while !line_chunk.is_char_boundary(chunk_len) {
4467 chunk_len -= 1;
4468 }
4469 line_chunk = &line_chunk[..chunk_len];
4470 line_exceeded_max_len = true;
4471 }
4472
4473 styles.push(TextRun {
4474 len: line_chunk.len(),
4475 font: text_style.font(),
4476 color: text_style.color,
4477 background_color: text_style.background_color,
4478 underline: text_style.underline,
4479 strikethrough: text_style.strikethrough,
4480 });
4481
4482 if editor_mode == EditorMode::Full {
4483 // Line wrap pads its contents with fake whitespaces,
4484 // avoid printing them
4485 let inside_wrapped_string = line_number_layouts
4486 .get(row)
4487 .and_then(|layout| layout.as_ref())
4488 .is_none();
4489 if highlighted_chunk.is_tab {
4490 if non_whitespace_added || !inside_wrapped_string {
4491 invisibles.push(Invisible::Tab {
4492 line_start_offset: line.len(),
4493 line_end_offset: line.len() + line_chunk.len(),
4494 });
4495 }
4496 } else {
4497 invisibles.extend(
4498 line_chunk
4499 .bytes()
4500 .enumerate()
4501 .filter(|(_, line_byte)| {
4502 let is_whitespace =
4503 (*line_byte as char).is_whitespace();
4504 non_whitespace_added |= !is_whitespace;
4505 is_whitespace
4506 && (non_whitespace_added || !inside_wrapped_string)
4507 })
4508 .map(|(whitespace_index, _)| Invisible::Whitespace {
4509 line_offset: line.len() + whitespace_index,
4510 }),
4511 )
4512 }
4513 }
4514
4515 line.push_str(line_chunk);
4516 }
4517 }
4518 }
4519 }
4520
4521 layouts
4522 }
4523
4524 fn prepaint(
4525 &mut self,
4526 line_height: Pixels,
4527 scroll_pixel_position: gpui::Point<Pixels>,
4528 row: DisplayRow,
4529 content_origin: gpui::Point<Pixels>,
4530 line_elements: &mut SmallVec<[AnyElement; 1]>,
4531 cx: &mut WindowContext,
4532 ) {
4533 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
4534 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
4535 for fragment in &mut self.fragments {
4536 match fragment {
4537 LineFragment::Text(line) => {
4538 fragment_origin.x += line.width;
4539 }
4540 LineFragment::Element { element, size, .. } => {
4541 let mut element = element
4542 .take()
4543 .expect("you can't prepaint LineWithInvisibles twice");
4544
4545 // Center the element vertically within the line.
4546 let mut element_origin = fragment_origin;
4547 element_origin.y += (line_height - size.height) / 2.;
4548 element.prepaint_at(element_origin, cx);
4549 line_elements.push(element);
4550
4551 fragment_origin.x += size.width;
4552 }
4553 }
4554 }
4555 }
4556
4557 fn draw(
4558 &self,
4559 layout: &EditorLayout,
4560 row: DisplayRow,
4561 content_origin: gpui::Point<Pixels>,
4562 whitespace_setting: ShowWhitespaceSetting,
4563 selection_ranges: &[Range<DisplayPoint>],
4564 cx: &mut WindowContext,
4565 ) {
4566 let line_height = layout.position_map.line_height;
4567 let line_y = line_height
4568 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
4569
4570 let mut fragment_origin =
4571 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
4572
4573 for fragment in &self.fragments {
4574 match fragment {
4575 LineFragment::Text(line) => {
4576 line.paint(fragment_origin, line_height, cx).log_err();
4577 fragment_origin.x += line.width;
4578 }
4579 LineFragment::Element { size, .. } => {
4580 fragment_origin.x += size.width;
4581 }
4582 }
4583 }
4584
4585 self.draw_invisibles(
4586 selection_ranges,
4587 layout,
4588 content_origin,
4589 line_y,
4590 row,
4591 line_height,
4592 whitespace_setting,
4593 cx,
4594 );
4595 }
4596
4597 #[allow(clippy::too_many_arguments)]
4598 fn draw_invisibles(
4599 &self,
4600 selection_ranges: &[Range<DisplayPoint>],
4601 layout: &EditorLayout,
4602 content_origin: gpui::Point<Pixels>,
4603 line_y: Pixels,
4604 row: DisplayRow,
4605 line_height: Pixels,
4606 whitespace_setting: ShowWhitespaceSetting,
4607 cx: &mut WindowContext,
4608 ) {
4609 let extract_whitespace_info = |invisible: &Invisible| {
4610 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
4611 Invisible::Tab {
4612 line_start_offset,
4613 line_end_offset,
4614 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
4615 Invisible::Whitespace { line_offset } => {
4616 (*line_offset, line_offset + 1, &layout.space_invisible)
4617 }
4618 };
4619
4620 let x_offset = self.x_for_index(token_offset);
4621 let invisible_offset =
4622 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
4623 let origin = content_origin
4624 + gpui::point(
4625 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
4626 line_y,
4627 );
4628
4629 (
4630 [token_offset, token_end_offset],
4631 Box::new(move |cx: &mut WindowContext| {
4632 invisible_symbol.paint(origin, line_height, cx).log_err();
4633 }),
4634 )
4635 };
4636
4637 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
4638 match whitespace_setting {
4639 ShowWhitespaceSetting::None => (),
4640 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
4641 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
4642 let invisible_point = DisplayPoint::new(row, start as u32);
4643 if !selection_ranges
4644 .iter()
4645 .any(|region| region.start <= invisible_point && invisible_point < region.end)
4646 {
4647 return;
4648 }
4649
4650 paint(cx);
4651 }),
4652
4653 // For a whitespace to be on a boundary, any of the following conditions need to be met:
4654 // - It is a tab
4655 // - It is adjacent to an edge (start or end)
4656 // - It is adjacent to a whitespace (left or right)
4657 ShowWhitespaceSetting::Boundary => {
4658 // 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
4659 // the above cases.
4660 // Note: We zip in the original `invisibles` to check for tab equality
4661 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
4662 for (([start, end], paint), invisible) in
4663 invisible_iter.zip_eq(self.invisibles.iter())
4664 {
4665 let should_render = match (&last_seen, invisible) {
4666 (_, Invisible::Tab { .. }) => true,
4667 (Some((_, last_end, _)), _) => *last_end == start,
4668 _ => false,
4669 };
4670
4671 if should_render || start == 0 || end == self.len {
4672 paint(cx);
4673
4674 // Since we are scanning from the left, we will skip over the first available whitespace that is part
4675 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
4676 if let Some((should_render_last, last_end, paint_last)) = last_seen {
4677 // Note that we need to make sure that the last one is actually adjacent
4678 if !should_render_last && last_end == start {
4679 paint_last(cx);
4680 }
4681 }
4682 }
4683
4684 // Manually render anything within a selection
4685 let invisible_point = DisplayPoint::new(row, start as u32);
4686 if selection_ranges.iter().any(|region| {
4687 region.start <= invisible_point && invisible_point < region.end
4688 }) {
4689 paint(cx);
4690 }
4691
4692 last_seen = Some((should_render, end, paint));
4693 }
4694 }
4695 }
4696 }
4697
4698 pub fn x_for_index(&self, index: usize) -> Pixels {
4699 let mut fragment_start_x = Pixels::ZERO;
4700 let mut fragment_start_index = 0;
4701
4702 for fragment in &self.fragments {
4703 match fragment {
4704 LineFragment::Text(shaped_line) => {
4705 let fragment_end_index = fragment_start_index + shaped_line.len;
4706 if index < fragment_end_index {
4707 return fragment_start_x
4708 + shaped_line.x_for_index(index - fragment_start_index);
4709 }
4710 fragment_start_x += shaped_line.width;
4711 fragment_start_index = fragment_end_index;
4712 }
4713 LineFragment::Element { len, size, .. } => {
4714 let fragment_end_index = fragment_start_index + len;
4715 if index < fragment_end_index {
4716 return fragment_start_x;
4717 }
4718 fragment_start_x += size.width;
4719 fragment_start_index = fragment_end_index;
4720 }
4721 }
4722 }
4723
4724 fragment_start_x
4725 }
4726
4727 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
4728 let mut fragment_start_x = Pixels::ZERO;
4729 let mut fragment_start_index = 0;
4730
4731 for fragment in &self.fragments {
4732 match fragment {
4733 LineFragment::Text(shaped_line) => {
4734 let fragment_end_x = fragment_start_x + shaped_line.width;
4735 if x < fragment_end_x {
4736 return Some(
4737 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
4738 );
4739 }
4740 fragment_start_x = fragment_end_x;
4741 fragment_start_index += shaped_line.len;
4742 }
4743 LineFragment::Element { len, size, .. } => {
4744 let fragment_end_x = fragment_start_x + size.width;
4745 if x < fragment_end_x {
4746 return Some(fragment_start_index);
4747 }
4748 fragment_start_index += len;
4749 fragment_start_x = fragment_end_x;
4750 }
4751 }
4752 }
4753
4754 None
4755 }
4756
4757 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
4758 let mut fragment_start_index = 0;
4759
4760 for fragment in &self.fragments {
4761 match fragment {
4762 LineFragment::Text(shaped_line) => {
4763 let fragment_end_index = fragment_start_index + shaped_line.len;
4764 if index < fragment_end_index {
4765 return shaped_line.font_id_for_index(index - fragment_start_index);
4766 }
4767 fragment_start_index = fragment_end_index;
4768 }
4769 LineFragment::Element { len, .. } => {
4770 let fragment_end_index = fragment_start_index + len;
4771 if index < fragment_end_index {
4772 return None;
4773 }
4774 fragment_start_index = fragment_end_index;
4775 }
4776 }
4777 }
4778
4779 None
4780 }
4781}
4782
4783#[derive(Debug, Clone, Copy, PartialEq, Eq)]
4784enum Invisible {
4785 /// A tab character
4786 ///
4787 /// A tab character is internally represented by spaces (configured by the user's tab width)
4788 /// aligned to the nearest column, so it's necessary to store the start and end offset for
4789 /// adjacency checks.
4790 Tab {
4791 line_start_offset: usize,
4792 line_end_offset: usize,
4793 },
4794 Whitespace {
4795 line_offset: usize,
4796 },
4797}
4798
4799impl EditorElement {
4800 /// Returns the rem size to use when rendering the [`EditorElement`].
4801 ///
4802 /// This allows UI elements to scale based on the `buffer_font_size`.
4803 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
4804 match self.editor.read(cx).mode {
4805 EditorMode::Full => {
4806 let buffer_font_size = self.style.text.font_size;
4807 match buffer_font_size {
4808 AbsoluteLength::Pixels(pixels) => {
4809 let rem_size_scale = {
4810 // Our default UI font size is 14px on a 16px base scale.
4811 // This means the default UI font size is 0.875rems.
4812 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
4813
4814 // We then determine the delta between a single rem and the default font
4815 // size scale.
4816 let default_font_size_delta = 1. - default_font_size_scale;
4817
4818 // Finally, we add this delta to 1rem to get the scale factor that
4819 // should be used to scale up the UI.
4820 1. + default_font_size_delta
4821 };
4822
4823 Some(pixels * rem_size_scale)
4824 }
4825 AbsoluteLength::Rems(rems) => {
4826 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
4827 }
4828 }
4829 }
4830 // We currently use single-line and auto-height editors in UI contexts,
4831 // so we don't want to scale everything with the buffer font size, as it
4832 // ends up looking off.
4833 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
4834 }
4835 }
4836}
4837
4838impl Element for EditorElement {
4839 type RequestLayoutState = ();
4840 type PrepaintState = EditorLayout;
4841
4842 fn id(&self) -> Option<ElementId> {
4843 None
4844 }
4845
4846 fn request_layout(
4847 &mut self,
4848 _: Option<&GlobalElementId>,
4849 cx: &mut WindowContext,
4850 ) -> (gpui::LayoutId, ()) {
4851 let rem_size = self.rem_size(cx);
4852 cx.with_rem_size(rem_size, |cx| {
4853 self.editor.update(cx, |editor, cx| {
4854 editor.set_style(self.style.clone(), cx);
4855
4856 let layout_id = match editor.mode {
4857 EditorMode::SingleLine { auto_width } => {
4858 let rem_size = cx.rem_size();
4859
4860 let height = self.style.text.line_height_in_pixels(rem_size);
4861 if auto_width {
4862 let editor_handle = cx.view().clone();
4863 let style = self.style.clone();
4864 cx.request_measured_layout(Style::default(), move |_, _, cx| {
4865 let editor_snapshot =
4866 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
4867 let line = Self::layout_lines(
4868 DisplayRow(0)..DisplayRow(1),
4869 &[],
4870 &editor_snapshot,
4871 &style,
4872 px(f32::MAX),
4873 cx,
4874 )
4875 .pop()
4876 .unwrap();
4877
4878 let font_id = cx.text_system().resolve_font(&style.text.font());
4879 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4880 let em_width = cx
4881 .text_system()
4882 .typographic_bounds(font_id, font_size, 'm')
4883 .unwrap()
4884 .size
4885 .width;
4886
4887 size(line.width + em_width, height)
4888 })
4889 } else {
4890 let mut style = Style::default();
4891 style.size.height = height.into();
4892 style.size.width = relative(1.).into();
4893 cx.request_layout(style, None)
4894 }
4895 }
4896 EditorMode::AutoHeight { max_lines } => {
4897 let editor_handle = cx.view().clone();
4898 let max_line_number_width =
4899 self.max_line_number_width(&editor.snapshot(cx), cx);
4900 cx.request_measured_layout(
4901 Style::default(),
4902 move |known_dimensions, available_space, cx| {
4903 editor_handle
4904 .update(cx, |editor, cx| {
4905 compute_auto_height_layout(
4906 editor,
4907 max_lines,
4908 max_line_number_width,
4909 known_dimensions,
4910 available_space.width,
4911 cx,
4912 )
4913 })
4914 .unwrap_or_default()
4915 },
4916 )
4917 }
4918 EditorMode::Full => {
4919 let mut style = Style::default();
4920 style.size.width = relative(1.).into();
4921 style.size.height = relative(1.).into();
4922 cx.request_layout(style, None)
4923 }
4924 };
4925
4926 (layout_id, ())
4927 })
4928 })
4929 }
4930
4931 fn prepaint(
4932 &mut self,
4933 _: Option<&GlobalElementId>,
4934 bounds: Bounds<Pixels>,
4935 _: &mut Self::RequestLayoutState,
4936 cx: &mut WindowContext,
4937 ) -> Self::PrepaintState {
4938 let text_style = TextStyleRefinement {
4939 font_size: Some(self.style.text.font_size),
4940 line_height: Some(self.style.text.line_height),
4941 ..Default::default()
4942 };
4943 let focus_handle = self.editor.focus_handle(cx);
4944 cx.set_view_id(self.editor.entity_id());
4945 cx.set_focus_handle(&focus_handle);
4946
4947 let rem_size = self.rem_size(cx);
4948 cx.with_rem_size(rem_size, |cx| {
4949 cx.with_text_style(Some(text_style), |cx| {
4950 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
4951 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
4952 let style = self.style.clone();
4953
4954 let font_id = cx.text_system().resolve_font(&style.text.font());
4955 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4956 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4957 let em_width = cx
4958 .text_system()
4959 .typographic_bounds(font_id, font_size, 'm')
4960 .unwrap()
4961 .size
4962 .width;
4963 let em_advance = cx
4964 .text_system()
4965 .advance(font_id, font_size, 'm')
4966 .unwrap()
4967 .width;
4968
4969 let gutter_dimensions = snapshot.gutter_dimensions(
4970 font_id,
4971 font_size,
4972 em_width,
4973 self.max_line_number_width(&snapshot, cx),
4974 cx,
4975 );
4976 let text_width = bounds.size.width - gutter_dimensions.width;
4977
4978 let right_margin = if snapshot.mode == EditorMode::Full {
4979 EditorElement::SCROLLBAR_WIDTH
4980 } else {
4981 px(0.)
4982 };
4983 let overscroll = size(em_width + right_margin, px(0.));
4984
4985 let editor_width =
4986 text_width - gutter_dimensions.margin - overscroll.width - em_width;
4987
4988 snapshot = self.editor.update(cx, |editor, cx| {
4989 editor.last_bounds = Some(bounds);
4990 editor.gutter_dimensions = gutter_dimensions;
4991 editor.set_visible_line_count(bounds.size.height / line_height, cx);
4992
4993 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
4994 snapshot
4995 } else {
4996 let wrap_width = match editor.soft_wrap_mode(cx) {
4997 SoftWrap::None => None,
4998 SoftWrap::PreferLine => {
4999 Some((MAX_LINE_LEN / 2) as f32 * em_advance)
5000 }
5001 SoftWrap::EditorWidth => Some(editor_width),
5002 SoftWrap::Column(column) => Some(column as f32 * em_advance),
5003 SoftWrap::Bounded(column) => {
5004 Some(editor_width.min(column as f32 * em_advance))
5005 }
5006 };
5007
5008 if editor.set_wrap_width(wrap_width, cx) {
5009 editor.snapshot(cx)
5010 } else {
5011 snapshot
5012 }
5013 }
5014 });
5015
5016 let wrap_guides = self
5017 .editor
5018 .read(cx)
5019 .wrap_guides(cx)
5020 .iter()
5021 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
5022 .collect::<SmallVec<[_; 2]>>();
5023
5024 let hitbox = cx.insert_hitbox(bounds, false);
5025 let gutter_hitbox =
5026 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
5027 let text_hitbox = cx.insert_hitbox(
5028 Bounds {
5029 origin: gutter_hitbox.upper_right(),
5030 size: size(text_width, bounds.size.height),
5031 },
5032 false,
5033 );
5034 // Offset the content_bounds from the text_bounds by the gutter margin (which
5035 // is roughly half a character wide) to make hit testing work more like how we want.
5036 let content_origin =
5037 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
5038
5039 let height_in_lines = bounds.size.height / line_height;
5040 let max_row = snapshot.max_point().row().as_f32();
5041 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
5042 (max_row - height_in_lines + 1.).max(0.)
5043 } else {
5044 let settings = EditorSettings::get_global(cx);
5045 match settings.scroll_beyond_last_line {
5046 ScrollBeyondLastLine::OnePage => max_row,
5047 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
5048 ScrollBeyondLastLine::VerticalScrollMargin => {
5049 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
5050 .max(0.)
5051 }
5052 }
5053 };
5054
5055 let mut autoscroll_request = None;
5056 let mut autoscroll_containing_element = false;
5057 let mut autoscroll_horizontally = false;
5058 self.editor.update(cx, |editor, cx| {
5059 autoscroll_request = editor.autoscroll_request();
5060 autoscroll_containing_element =
5061 autoscroll_request.is_some() || editor.has_pending_selection();
5062 autoscroll_horizontally =
5063 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
5064 snapshot = editor.snapshot(cx);
5065 });
5066
5067 let mut scroll_position = snapshot.scroll_position();
5068 // The scroll position is a fractional point, the whole number of which represents
5069 // the top of the window in terms of display rows.
5070 let start_row = DisplayRow(scroll_position.y as u32);
5071 let max_row = snapshot.max_point().row();
5072 let end_row = cmp::min(
5073 (scroll_position.y + height_in_lines).ceil() as u32,
5074 max_row.next_row().0,
5075 );
5076 let end_row = DisplayRow(end_row);
5077
5078 let buffer_rows = snapshot
5079 .buffer_rows(start_row)
5080 .take((start_row..end_row).len())
5081 .collect::<Vec<_>>();
5082
5083 let start_anchor = if start_row == Default::default() {
5084 Anchor::min()
5085 } else {
5086 snapshot.buffer_snapshot.anchor_before(
5087 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
5088 )
5089 };
5090 let end_anchor = if end_row > max_row {
5091 Anchor::max()
5092 } else {
5093 snapshot.buffer_snapshot.anchor_before(
5094 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
5095 )
5096 };
5097
5098 let highlighted_rows = self
5099 .editor
5100 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
5101 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
5102 start_anchor..end_anchor,
5103 &snapshot.display_snapshot,
5104 cx.theme().colors(),
5105 );
5106 let highlighted_gutter_ranges =
5107 self.editor.read(cx).gutter_highlights_in_range(
5108 start_anchor..end_anchor,
5109 &snapshot.display_snapshot,
5110 cx,
5111 );
5112
5113 let redacted_ranges = self.editor.read(cx).redacted_ranges(
5114 start_anchor..end_anchor,
5115 &snapshot.display_snapshot,
5116 cx,
5117 );
5118
5119 let (selections, active_rows, newest_selection_head) = self.layout_selections(
5120 start_anchor,
5121 end_anchor,
5122 &snapshot,
5123 start_row,
5124 end_row,
5125 cx,
5126 );
5127
5128 let line_numbers = self.layout_line_numbers(
5129 start_row..end_row,
5130 buffer_rows.iter().copied(),
5131 &active_rows,
5132 newest_selection_head,
5133 &snapshot,
5134 cx,
5135 );
5136
5137 let mut gutter_fold_toggles =
5138 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5139 self.layout_gutter_fold_toggles(
5140 start_row..end_row,
5141 buffer_rows.iter().copied(),
5142 &active_rows,
5143 &snapshot,
5144 cx,
5145 )
5146 });
5147 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5148 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
5149 });
5150
5151 let display_hunks = self.layout_gutter_git_hunks(
5152 line_height,
5153 &gutter_hitbox,
5154 start_row..end_row,
5155 start_anchor..end_anchor,
5156 &snapshot,
5157 cx,
5158 );
5159
5160 let mut max_visible_line_width = Pixels::ZERO;
5161 let mut line_layouts = Self::layout_lines(
5162 start_row..end_row,
5163 &line_numbers,
5164 &snapshot,
5165 &self.style,
5166 editor_width,
5167 cx,
5168 );
5169 for line_with_invisibles in &line_layouts {
5170 if line_with_invisibles.width > max_visible_line_width {
5171 max_visible_line_width = line_with_invisibles.width;
5172 }
5173 }
5174
5175 let longest_line_width =
5176 layout_line(snapshot.longest_row(), &snapshot, &style, editor_width, cx)
5177 .width;
5178 let mut scroll_width =
5179 longest_line_width.max(max_visible_line_width) + overscroll.width;
5180
5181 let blocks = cx.with_element_namespace("blocks", |cx| {
5182 self.render_blocks(
5183 start_row..end_row,
5184 &snapshot,
5185 &hitbox,
5186 &text_hitbox,
5187 editor_width,
5188 &mut scroll_width,
5189 &gutter_dimensions,
5190 em_width,
5191 gutter_dimensions.full_width(),
5192 line_height,
5193 &line_layouts,
5194 cx,
5195 )
5196 });
5197 let mut blocks = match blocks {
5198 Ok(blocks) => blocks,
5199 Err(resized_blocks) => {
5200 self.editor.update(cx, |editor, cx| {
5201 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
5202 });
5203 return self.prepaint(None, bounds, &mut (), cx);
5204 }
5205 };
5206
5207 let start_buffer_row =
5208 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
5209 let end_buffer_row =
5210 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
5211
5212 let scroll_max = point(
5213 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5214 max_row.as_f32(),
5215 );
5216
5217 self.editor.update(cx, |editor, cx| {
5218 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5219
5220 let autoscrolled = if autoscroll_horizontally {
5221 editor.autoscroll_horizontally(
5222 start_row,
5223 text_hitbox.size.width,
5224 scroll_width,
5225 em_width,
5226 &line_layouts,
5227 cx,
5228 )
5229 } else {
5230 false
5231 };
5232
5233 if clamped || autoscrolled {
5234 snapshot = editor.snapshot(cx);
5235 scroll_position = snapshot.scroll_position();
5236 }
5237 });
5238
5239 let scroll_pixel_position = point(
5240 scroll_position.x * em_width,
5241 scroll_position.y * line_height,
5242 );
5243
5244 let indent_guides = self.layout_indent_guides(
5245 content_origin,
5246 text_hitbox.origin,
5247 start_buffer_row..end_buffer_row,
5248 scroll_pixel_position,
5249 line_height,
5250 &snapshot,
5251 cx,
5252 );
5253
5254 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5255 self.prepaint_crease_trailers(
5256 crease_trailers,
5257 &line_layouts,
5258 line_height,
5259 content_origin,
5260 scroll_pixel_position,
5261 em_width,
5262 cx,
5263 )
5264 });
5265
5266 let mut inline_blame = None;
5267 if let Some(newest_selection_head) = newest_selection_head {
5268 let display_row = newest_selection_head.row();
5269 if (start_row..end_row).contains(&display_row) {
5270 let line_ix = display_row.minus(start_row) as usize;
5271 let line_layout = &line_layouts[line_ix];
5272 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
5273 inline_blame = self.layout_inline_blame(
5274 display_row,
5275 &snapshot.display_snapshot,
5276 line_layout,
5277 crease_trailer_layout,
5278 em_width,
5279 content_origin,
5280 scroll_pixel_position,
5281 line_height,
5282 cx,
5283 );
5284 }
5285 }
5286
5287 let blamed_display_rows = self.layout_blame_entries(
5288 buffer_rows.into_iter(),
5289 em_width,
5290 scroll_position,
5291 line_height,
5292 &gutter_hitbox,
5293 gutter_dimensions.git_blame_entries_width,
5294 cx,
5295 );
5296
5297 let scroll_max = point(
5298 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5299 max_scroll_top,
5300 );
5301
5302 self.editor.update(cx, |editor, cx| {
5303 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5304
5305 let autoscrolled = if autoscroll_horizontally {
5306 editor.autoscroll_horizontally(
5307 start_row,
5308 text_hitbox.size.width,
5309 scroll_width,
5310 em_width,
5311 &line_layouts,
5312 cx,
5313 )
5314 } else {
5315 false
5316 };
5317
5318 if clamped || autoscrolled {
5319 snapshot = editor.snapshot(cx);
5320 scroll_position = snapshot.scroll_position();
5321 }
5322 });
5323
5324 let line_elements = self.prepaint_lines(
5325 start_row,
5326 &mut line_layouts,
5327 line_height,
5328 scroll_pixel_position,
5329 content_origin,
5330 cx,
5331 );
5332
5333 cx.with_element_namespace("blocks", |cx| {
5334 self.layout_blocks(
5335 &mut blocks,
5336 &hitbox,
5337 line_height,
5338 scroll_pixel_position,
5339 cx,
5340 );
5341 });
5342
5343 let cursors = self.collect_cursors(&snapshot, cx);
5344 let visible_row_range = start_row..end_row;
5345 let non_visible_cursors = cursors
5346 .iter()
5347 .any(move |c| !visible_row_range.contains(&c.0.row()));
5348
5349 let visible_cursors = self.layout_visible_cursors(
5350 &snapshot,
5351 &selections,
5352 start_row..end_row,
5353 &line_layouts,
5354 &text_hitbox,
5355 content_origin,
5356 scroll_position,
5357 scroll_pixel_position,
5358 line_height,
5359 em_width,
5360 autoscroll_containing_element,
5361 cx,
5362 );
5363
5364 let scrollbar_layout = self.layout_scrollbar(
5365 &snapshot,
5366 bounds,
5367 scroll_position,
5368 height_in_lines,
5369 non_visible_cursors,
5370 cx,
5371 );
5372
5373 let gutter_settings = EditorSettings::get_global(cx).gutter;
5374
5375 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
5376 editor
5377 .expanded_hunks
5378 .hunks(false)
5379 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
5380 .map(|expanded_hunk| {
5381 let start_row = expanded_hunk
5382 .hunk_range
5383 .start
5384 .to_display_point(&snapshot)
5385 .row();
5386 (start_row, expanded_hunk.clone())
5387 })
5388 .collect::<HashMap<_, _>>()
5389 });
5390
5391 let rows_with_hunk_bounds = display_hunks
5392 .iter()
5393 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
5394 .fold(
5395 HashMap::default(),
5396 |mut rows_with_hunk_bounds, (hunk, bounds)| {
5397 match hunk {
5398 DisplayDiffHunk::Folded { display_row } => {
5399 rows_with_hunk_bounds.insert(*display_row, bounds);
5400 }
5401 DisplayDiffHunk::Unfolded {
5402 display_row_range, ..
5403 } => {
5404 for display_row in display_row_range.iter_rows() {
5405 rows_with_hunk_bounds.insert(display_row, bounds);
5406 }
5407 }
5408 }
5409 rows_with_hunk_bounds
5410 },
5411 );
5412 let mut _context_menu_visible = false;
5413 let mut code_actions_indicator = None;
5414 if let Some(newest_selection_head) = newest_selection_head {
5415 if (start_row..end_row).contains(&newest_selection_head.row()) {
5416 _context_menu_visible = self.layout_context_menu(
5417 line_height,
5418 &hitbox,
5419 &text_hitbox,
5420 content_origin,
5421 start_row,
5422 scroll_pixel_position,
5423 &line_layouts,
5424 newest_selection_head,
5425 gutter_dimensions.width - gutter_dimensions.left_padding,
5426 cx,
5427 );
5428
5429 let show_code_actions = snapshot
5430 .show_code_actions
5431 .unwrap_or(gutter_settings.code_actions);
5432 if show_code_actions {
5433 let newest_selection_point =
5434 newest_selection_head.to_point(&snapshot.display_snapshot);
5435 let newest_selection_display_row =
5436 newest_selection_point.to_display_point(&snapshot).row();
5437 if !expanded_add_hunks_by_rows
5438 .contains_key(&newest_selection_display_row)
5439 {
5440 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
5441 MultiBufferRow(newest_selection_point.row),
5442 );
5443 if let Some((buffer, range)) = buffer {
5444 let buffer_id = buffer.remote_id();
5445 let row = range.start.row;
5446 let has_test_indicator = self
5447 .editor
5448 .read(cx)
5449 .tasks
5450 .contains_key(&(buffer_id, row));
5451
5452 if !has_test_indicator {
5453 code_actions_indicator = self
5454 .layout_code_actions_indicator(
5455 line_height,
5456 newest_selection_head,
5457 scroll_pixel_position,
5458 &gutter_dimensions,
5459 &gutter_hitbox,
5460 &rows_with_hunk_bounds,
5461 cx,
5462 );
5463 }
5464 }
5465 }
5466 }
5467 }
5468 }
5469
5470 let test_indicators = if gutter_settings.runnables {
5471 self.layout_run_indicators(
5472 line_height,
5473 start_row..end_row,
5474 scroll_pixel_position,
5475 &gutter_dimensions,
5476 &gutter_hitbox,
5477 &rows_with_hunk_bounds,
5478 &snapshot,
5479 cx,
5480 )
5481 } else {
5482 Vec::new()
5483 };
5484
5485 self.layout_signature_help(
5486 &hitbox,
5487 content_origin,
5488 scroll_pixel_position,
5489 newest_selection_head,
5490 start_row,
5491 &line_layouts,
5492 line_height,
5493 em_width,
5494 cx,
5495 );
5496
5497 if !cx.has_active_drag() {
5498 self.layout_hover_popovers(
5499 &snapshot,
5500 &hitbox,
5501 &text_hitbox,
5502 start_row..end_row,
5503 content_origin,
5504 scroll_pixel_position,
5505 &line_layouts,
5506 line_height,
5507 em_width,
5508 cx,
5509 );
5510 }
5511
5512 let mouse_context_menu =
5513 self.layout_mouse_context_menu(&snapshot, start_row..end_row, cx);
5514
5515 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5516 self.prepaint_gutter_fold_toggles(
5517 &mut gutter_fold_toggles,
5518 line_height,
5519 &gutter_dimensions,
5520 gutter_settings,
5521 scroll_pixel_position,
5522 &gutter_hitbox,
5523 cx,
5524 )
5525 });
5526
5527 let invisible_symbol_font_size = font_size / 2.;
5528 let tab_invisible = cx
5529 .text_system()
5530 .shape_line(
5531 "→".into(),
5532 invisible_symbol_font_size,
5533 &[TextRun {
5534 len: "→".len(),
5535 font: self.style.text.font(),
5536 color: cx.theme().colors().editor_invisible,
5537 background_color: None,
5538 underline: None,
5539 strikethrough: None,
5540 }],
5541 )
5542 .unwrap();
5543 let space_invisible = cx
5544 .text_system()
5545 .shape_line(
5546 "•".into(),
5547 invisible_symbol_font_size,
5548 &[TextRun {
5549 len: "•".len(),
5550 font: self.style.text.font(),
5551 color: cx.theme().colors().editor_invisible,
5552 background_color: None,
5553 underline: None,
5554 strikethrough: None,
5555 }],
5556 )
5557 .unwrap();
5558
5559 EditorLayout {
5560 mode: snapshot.mode,
5561 position_map: Rc::new(PositionMap {
5562 size: bounds.size,
5563 scroll_pixel_position,
5564 scroll_max,
5565 line_layouts,
5566 line_height,
5567 em_width,
5568 em_advance,
5569 snapshot,
5570 }),
5571 visible_display_row_range: start_row..end_row,
5572 wrap_guides,
5573 indent_guides,
5574 hitbox,
5575 text_hitbox,
5576 gutter_hitbox,
5577 gutter_dimensions,
5578 display_hunks,
5579 content_origin,
5580 scrollbar_layout,
5581 active_rows,
5582 highlighted_rows,
5583 highlighted_ranges,
5584 highlighted_gutter_ranges,
5585 redacted_ranges,
5586 line_elements,
5587 line_numbers,
5588 blamed_display_rows,
5589 inline_blame,
5590 blocks,
5591 cursors,
5592 visible_cursors,
5593 selections,
5594 mouse_context_menu,
5595 test_indicators,
5596 code_actions_indicator,
5597 gutter_fold_toggles,
5598 crease_trailers,
5599 tab_invisible,
5600 space_invisible,
5601 }
5602 })
5603 })
5604 })
5605 }
5606
5607 fn paint(
5608 &mut self,
5609 _: Option<&GlobalElementId>,
5610 bounds: Bounds<gpui::Pixels>,
5611 _: &mut Self::RequestLayoutState,
5612 layout: &mut Self::PrepaintState,
5613 cx: &mut WindowContext,
5614 ) {
5615 let focus_handle = self.editor.focus_handle(cx);
5616 let key_context = self.editor.update(cx, |editor, cx| editor.key_context(cx));
5617 cx.set_key_context(key_context);
5618 cx.handle_input(
5619 &focus_handle,
5620 ElementInputHandler::new(bounds, self.editor.clone()),
5621 );
5622 self.register_actions(cx);
5623 self.register_key_listeners(cx, layout);
5624
5625 let text_style = TextStyleRefinement {
5626 font_size: Some(self.style.text.font_size),
5627 line_height: Some(self.style.text.line_height),
5628 ..Default::default()
5629 };
5630 let mouse_position = cx.mouse_position();
5631 let hovered_hunk = layout
5632 .display_hunks
5633 .iter()
5634 .find_map(|(hunk, hunk_hitbox)| match hunk {
5635 DisplayDiffHunk::Folded { .. } => None,
5636 DisplayDiffHunk::Unfolded {
5637 diff_base_byte_range,
5638 multi_buffer_range,
5639 status,
5640 ..
5641 } => {
5642 if hunk_hitbox
5643 .as_ref()
5644 .map(|hitbox| hitbox.contains(&mouse_position))
5645 .unwrap_or(false)
5646 {
5647 Some(HoveredHunk {
5648 status: *status,
5649 multi_buffer_range: multi_buffer_range.clone(),
5650 diff_base_byte_range: diff_base_byte_range.clone(),
5651 })
5652 } else {
5653 None
5654 }
5655 }
5656 });
5657 let rem_size = self.rem_size(cx);
5658 cx.with_rem_size(rem_size, |cx| {
5659 cx.with_text_style(Some(text_style), |cx| {
5660 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
5661 self.paint_mouse_listeners(layout, hovered_hunk, cx);
5662 self.paint_background(layout, cx);
5663 self.paint_indent_guides(layout, cx);
5664
5665 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5666 self.paint_blamed_display_rows(layout, cx);
5667 self.paint_line_numbers(layout, cx);
5668 }
5669
5670 self.paint_text(layout, cx);
5671
5672 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5673 self.paint_gutter_highlights(layout, cx);
5674 self.paint_gutter_indicators(layout, cx);
5675 }
5676
5677 if !layout.blocks.is_empty() {
5678 cx.with_element_namespace("blocks", |cx| {
5679 self.paint_blocks(layout, cx);
5680 });
5681 }
5682
5683 self.paint_scrollbar(layout, cx);
5684 self.paint_mouse_context_menu(layout, cx);
5685 });
5686 })
5687 })
5688 }
5689}
5690
5691pub(super) fn gutter_bounds(
5692 editor_bounds: Bounds<Pixels>,
5693 gutter_dimensions: GutterDimensions,
5694) -> Bounds<Pixels> {
5695 Bounds {
5696 origin: editor_bounds.origin,
5697 size: size(gutter_dimensions.width, editor_bounds.size.height),
5698 }
5699}
5700
5701impl IntoElement for EditorElement {
5702 type Element = Self;
5703
5704 fn into_element(self) -> Self::Element {
5705 self
5706 }
5707}
5708
5709pub struct EditorLayout {
5710 position_map: Rc<PositionMap>,
5711 hitbox: Hitbox,
5712 text_hitbox: Hitbox,
5713 gutter_hitbox: Hitbox,
5714 gutter_dimensions: GutterDimensions,
5715 content_origin: gpui::Point<Pixels>,
5716 scrollbar_layout: Option<ScrollbarLayout>,
5717 mode: EditorMode,
5718 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
5719 indent_guides: Option<Vec<IndentGuideLayout>>,
5720 visible_display_row_range: Range<DisplayRow>,
5721 active_rows: BTreeMap<DisplayRow, bool>,
5722 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
5723 line_elements: SmallVec<[AnyElement; 1]>,
5724 line_numbers: Vec<Option<ShapedLine>>,
5725 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
5726 blamed_display_rows: Option<Vec<AnyElement>>,
5727 inline_blame: Option<AnyElement>,
5728 blocks: Vec<BlockLayout>,
5729 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5730 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5731 redacted_ranges: Vec<Range<DisplayPoint>>,
5732 cursors: Vec<(DisplayPoint, Hsla)>,
5733 visible_cursors: Vec<CursorLayout>,
5734 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
5735 code_actions_indicator: Option<AnyElement>,
5736 test_indicators: Vec<AnyElement>,
5737 gutter_fold_toggles: Vec<Option<AnyElement>>,
5738 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
5739 mouse_context_menu: Option<AnyElement>,
5740 tab_invisible: ShapedLine,
5741 space_invisible: ShapedLine,
5742}
5743
5744impl EditorLayout {
5745 fn line_end_overshoot(&self) -> Pixels {
5746 0.15 * self.position_map.line_height
5747 }
5748}
5749
5750struct ColoredRange<T> {
5751 start: T,
5752 end: T,
5753 color: Hsla,
5754}
5755
5756#[derive(Clone)]
5757struct ScrollbarLayout {
5758 hitbox: Hitbox,
5759 visible_row_range: Range<f32>,
5760 visible: bool,
5761 row_height: Pixels,
5762 thumb_height: Pixels,
5763}
5764
5765impl ScrollbarLayout {
5766 const BORDER_WIDTH: Pixels = px(1.0);
5767 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
5768 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
5769 const MIN_THUMB_HEIGHT: Pixels = px(20.0);
5770
5771 fn thumb_bounds(&self) -> Bounds<Pixels> {
5772 let thumb_top = self.y_for_row(self.visible_row_range.start);
5773 let thumb_bottom = thumb_top + self.thumb_height;
5774 Bounds::from_corners(
5775 point(self.hitbox.left(), thumb_top),
5776 point(self.hitbox.right(), thumb_bottom),
5777 )
5778 }
5779
5780 fn y_for_row(&self, row: f32) -> Pixels {
5781 self.hitbox.top() + row * self.row_height
5782 }
5783
5784 fn marker_quads_for_ranges(
5785 &self,
5786 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
5787 column: Option<usize>,
5788 ) -> Vec<PaintQuad> {
5789 struct MinMax {
5790 min: Pixels,
5791 max: Pixels,
5792 }
5793 let (x_range, height_limit) = if let Some(column) = column {
5794 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
5795 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
5796 let end = start + column_width;
5797 (
5798 Range { start, end },
5799 MinMax {
5800 min: Self::MIN_MARKER_HEIGHT,
5801 max: px(f32::MAX),
5802 },
5803 )
5804 } else {
5805 (
5806 Range {
5807 start: Self::BORDER_WIDTH,
5808 end: self.hitbox.size.width,
5809 },
5810 MinMax {
5811 min: Self::LINE_MARKER_HEIGHT,
5812 max: Self::LINE_MARKER_HEIGHT,
5813 },
5814 )
5815 };
5816
5817 let row_to_y = |row: DisplayRow| row.as_f32() * self.row_height;
5818 let mut pixel_ranges = row_ranges
5819 .into_iter()
5820 .map(|range| {
5821 let start_y = row_to_y(range.start);
5822 let end_y = row_to_y(range.end)
5823 + self.row_height.max(height_limit.min).min(height_limit.max);
5824 ColoredRange {
5825 start: start_y,
5826 end: end_y,
5827 color: range.color,
5828 }
5829 })
5830 .peekable();
5831
5832 let mut quads = Vec::new();
5833 while let Some(mut pixel_range) = pixel_ranges.next() {
5834 while let Some(next_pixel_range) = pixel_ranges.peek() {
5835 if pixel_range.end >= next_pixel_range.start - px(1.0)
5836 && pixel_range.color == next_pixel_range.color
5837 {
5838 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
5839 pixel_ranges.next();
5840 } else {
5841 break;
5842 }
5843 }
5844
5845 let bounds = Bounds::from_corners(
5846 point(x_range.start, pixel_range.start),
5847 point(x_range.end, pixel_range.end),
5848 );
5849 quads.push(quad(
5850 bounds,
5851 Corners::default(),
5852 pixel_range.color,
5853 Edges::default(),
5854 Hsla::transparent_black(),
5855 ));
5856 }
5857
5858 quads
5859 }
5860}
5861
5862struct CreaseTrailerLayout {
5863 element: AnyElement,
5864 bounds: Bounds<Pixels>,
5865}
5866
5867struct PositionMap {
5868 size: Size<Pixels>,
5869 line_height: Pixels,
5870 scroll_pixel_position: gpui::Point<Pixels>,
5871 scroll_max: gpui::Point<f32>,
5872 em_width: Pixels,
5873 em_advance: Pixels,
5874 line_layouts: Vec<LineWithInvisibles>,
5875 snapshot: EditorSnapshot,
5876}
5877
5878#[derive(Debug, Copy, Clone)]
5879pub struct PointForPosition {
5880 pub previous_valid: DisplayPoint,
5881 pub next_valid: DisplayPoint,
5882 pub exact_unclipped: DisplayPoint,
5883 pub column_overshoot_after_line_end: u32,
5884}
5885
5886impl PointForPosition {
5887 pub fn as_valid(&self) -> Option<DisplayPoint> {
5888 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
5889 Some(self.previous_valid)
5890 } else {
5891 None
5892 }
5893 }
5894}
5895
5896impl PositionMap {
5897 fn point_for_position(
5898 &self,
5899 text_bounds: Bounds<Pixels>,
5900 position: gpui::Point<Pixels>,
5901 ) -> PointForPosition {
5902 let scroll_position = self.snapshot.scroll_position();
5903 let position = position - text_bounds.origin;
5904 let y = position.y.max(px(0.)).min(self.size.height);
5905 let x = position.x + (scroll_position.x * self.em_width);
5906 let row = ((y / self.line_height) + scroll_position.y) as u32;
5907
5908 let (column, x_overshoot_after_line_end) = if let Some(line) = self
5909 .line_layouts
5910 .get(row as usize - scroll_position.y as usize)
5911 {
5912 if let Some(ix) = line.index_for_x(x) {
5913 (ix as u32, px(0.))
5914 } else {
5915 (line.len as u32, px(0.).max(x - line.width))
5916 }
5917 } else {
5918 (0, x)
5919 };
5920
5921 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
5922 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
5923 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
5924
5925 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
5926 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
5927 PointForPosition {
5928 previous_valid,
5929 next_valid,
5930 exact_unclipped,
5931 column_overshoot_after_line_end,
5932 }
5933 }
5934}
5935
5936struct BlockLayout {
5937 id: BlockId,
5938 row: Option<DisplayRow>,
5939 element: AnyElement,
5940 available_space: Size<AvailableSpace>,
5941 style: BlockStyle,
5942}
5943
5944fn layout_line(
5945 row: DisplayRow,
5946 snapshot: &EditorSnapshot,
5947 style: &EditorStyle,
5948 text_width: Pixels,
5949 cx: &mut WindowContext,
5950) -> LineWithInvisibles {
5951 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
5952 LineWithInvisibles::from_chunks(
5953 chunks,
5954 &style.text,
5955 MAX_LINE_LEN,
5956 1,
5957 &[],
5958 snapshot.mode,
5959 text_width,
5960 cx,
5961 )
5962 .pop()
5963 .unwrap()
5964}
5965
5966#[derive(Debug)]
5967pub struct IndentGuideLayout {
5968 origin: gpui::Point<Pixels>,
5969 length: Pixels,
5970 single_indent_width: Pixels,
5971 depth: u32,
5972 active: bool,
5973 settings: IndentGuideSettings,
5974}
5975
5976pub struct CursorLayout {
5977 origin: gpui::Point<Pixels>,
5978 block_width: Pixels,
5979 line_height: Pixels,
5980 color: Hsla,
5981 shape: CursorShape,
5982 block_text: Option<ShapedLine>,
5983 cursor_name: Option<AnyElement>,
5984}
5985
5986#[derive(Debug)]
5987pub struct CursorName {
5988 string: SharedString,
5989 color: Hsla,
5990 is_top_row: bool,
5991}
5992
5993impl CursorLayout {
5994 pub fn new(
5995 origin: gpui::Point<Pixels>,
5996 block_width: Pixels,
5997 line_height: Pixels,
5998 color: Hsla,
5999 shape: CursorShape,
6000 block_text: Option<ShapedLine>,
6001 ) -> CursorLayout {
6002 CursorLayout {
6003 origin,
6004 block_width,
6005 line_height,
6006 color,
6007 shape,
6008 block_text,
6009 cursor_name: None,
6010 }
6011 }
6012
6013 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6014 Bounds {
6015 origin: self.origin + origin,
6016 size: size(self.block_width, self.line_height),
6017 }
6018 }
6019
6020 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6021 match self.shape {
6022 CursorShape::Bar => Bounds {
6023 origin: self.origin + origin,
6024 size: size(px(2.0), self.line_height),
6025 },
6026 CursorShape::Block | CursorShape::Hollow => Bounds {
6027 origin: self.origin + origin,
6028 size: size(self.block_width, self.line_height),
6029 },
6030 CursorShape::Underscore => Bounds {
6031 origin: self.origin
6032 + origin
6033 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
6034 size: size(self.block_width, px(2.0)),
6035 },
6036 }
6037 }
6038
6039 pub fn layout(
6040 &mut self,
6041 origin: gpui::Point<Pixels>,
6042 cursor_name: Option<CursorName>,
6043 cx: &mut WindowContext,
6044 ) {
6045 if let Some(cursor_name) = cursor_name {
6046 let bounds = self.bounds(origin);
6047 let text_size = self.line_height / 1.5;
6048
6049 let name_origin = if cursor_name.is_top_row {
6050 point(bounds.right() - px(1.), bounds.top())
6051 } else {
6052 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
6053 };
6054 let mut name_element = div()
6055 .bg(self.color)
6056 .text_size(text_size)
6057 .px_0p5()
6058 .line_height(text_size + px(2.))
6059 .text_color(cursor_name.color)
6060 .child(cursor_name.string.clone())
6061 .into_any_element();
6062
6063 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
6064
6065 self.cursor_name = Some(name_element);
6066 }
6067 }
6068
6069 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
6070 let bounds = self.bounds(origin);
6071
6072 //Draw background or border quad
6073 let cursor = if matches!(self.shape, CursorShape::Hollow) {
6074 outline(bounds, self.color)
6075 } else {
6076 fill(bounds, self.color)
6077 };
6078
6079 if let Some(name) = &mut self.cursor_name {
6080 name.paint(cx);
6081 }
6082
6083 cx.paint_quad(cursor);
6084
6085 if let Some(block_text) = &self.block_text {
6086 block_text
6087 .paint(self.origin + origin, self.line_height, cx)
6088 .log_err();
6089 }
6090 }
6091
6092 pub fn shape(&self) -> CursorShape {
6093 self.shape
6094 }
6095}
6096
6097#[derive(Debug)]
6098pub struct HighlightedRange {
6099 pub start_y: Pixels,
6100 pub line_height: Pixels,
6101 pub lines: Vec<HighlightedRangeLine>,
6102 pub color: Hsla,
6103 pub corner_radius: Pixels,
6104}
6105
6106#[derive(Debug)]
6107pub struct HighlightedRangeLine {
6108 pub start_x: Pixels,
6109 pub end_x: Pixels,
6110}
6111
6112impl HighlightedRange {
6113 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
6114 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
6115 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
6116 self.paint_lines(
6117 self.start_y + self.line_height,
6118 &self.lines[1..],
6119 bounds,
6120 cx,
6121 );
6122 } else {
6123 self.paint_lines(self.start_y, &self.lines, bounds, cx);
6124 }
6125 }
6126
6127 fn paint_lines(
6128 &self,
6129 start_y: Pixels,
6130 lines: &[HighlightedRangeLine],
6131 _bounds: Bounds<Pixels>,
6132 cx: &mut WindowContext,
6133 ) {
6134 if lines.is_empty() {
6135 return;
6136 }
6137
6138 let first_line = lines.first().unwrap();
6139 let last_line = lines.last().unwrap();
6140
6141 let first_top_left = point(first_line.start_x, start_y);
6142 let first_top_right = point(first_line.end_x, start_y);
6143
6144 let curve_height = point(Pixels::ZERO, self.corner_radius);
6145 let curve_width = |start_x: Pixels, end_x: Pixels| {
6146 let max = (end_x - start_x) / 2.;
6147 let width = if max < self.corner_radius {
6148 max
6149 } else {
6150 self.corner_radius
6151 };
6152
6153 point(width, Pixels::ZERO)
6154 };
6155
6156 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
6157 let mut path = gpui::Path::new(first_top_right - top_curve_width);
6158 path.curve_to(first_top_right + curve_height, first_top_right);
6159
6160 let mut iter = lines.iter().enumerate().peekable();
6161 while let Some((ix, line)) = iter.next() {
6162 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
6163
6164 if let Some((_, next_line)) = iter.peek() {
6165 let next_top_right = point(next_line.end_x, bottom_right.y);
6166
6167 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
6168 Ordering::Equal => {
6169 path.line_to(bottom_right);
6170 }
6171 Ordering::Less => {
6172 let curve_width = curve_width(next_top_right.x, bottom_right.x);
6173 path.line_to(bottom_right - curve_height);
6174 if self.corner_radius > Pixels::ZERO {
6175 path.curve_to(bottom_right - curve_width, bottom_right);
6176 }
6177 path.line_to(next_top_right + curve_width);
6178 if self.corner_radius > Pixels::ZERO {
6179 path.curve_to(next_top_right + curve_height, next_top_right);
6180 }
6181 }
6182 Ordering::Greater => {
6183 let curve_width = curve_width(bottom_right.x, next_top_right.x);
6184 path.line_to(bottom_right - curve_height);
6185 if self.corner_radius > Pixels::ZERO {
6186 path.curve_to(bottom_right + curve_width, bottom_right);
6187 }
6188 path.line_to(next_top_right - curve_width);
6189 if self.corner_radius > Pixels::ZERO {
6190 path.curve_to(next_top_right + curve_height, next_top_right);
6191 }
6192 }
6193 }
6194 } else {
6195 let curve_width = curve_width(line.start_x, line.end_x);
6196 path.line_to(bottom_right - curve_height);
6197 if self.corner_radius > Pixels::ZERO {
6198 path.curve_to(bottom_right - curve_width, bottom_right);
6199 }
6200
6201 let bottom_left = point(line.start_x, bottom_right.y);
6202 path.line_to(bottom_left + curve_width);
6203 if self.corner_radius > Pixels::ZERO {
6204 path.curve_to(bottom_left - curve_height, bottom_left);
6205 }
6206 }
6207 }
6208
6209 if first_line.start_x > last_line.start_x {
6210 let curve_width = curve_width(last_line.start_x, first_line.start_x);
6211 let second_top_left = point(last_line.start_x, start_y + self.line_height);
6212 path.line_to(second_top_left + curve_height);
6213 if self.corner_radius > Pixels::ZERO {
6214 path.curve_to(second_top_left + curve_width, second_top_left);
6215 }
6216 let first_bottom_left = point(first_line.start_x, second_top_left.y);
6217 path.line_to(first_bottom_left - curve_width);
6218 if self.corner_radius > Pixels::ZERO {
6219 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
6220 }
6221 }
6222
6223 path.line_to(first_top_left + curve_height);
6224 if self.corner_radius > Pixels::ZERO {
6225 path.curve_to(first_top_left + top_curve_width, first_top_left);
6226 }
6227 path.line_to(first_top_right - top_curve_width);
6228
6229 cx.paint_path(path, self.color);
6230 }
6231}
6232
6233pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6234 (delta.pow(1.5) / 100.0).into()
6235}
6236
6237fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6238 (delta.pow(1.2) / 300.0).into()
6239}
6240
6241pub fn register_action<T: Action>(
6242 view: &View<Editor>,
6243 cx: &mut WindowContext,
6244 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
6245) {
6246 let view = view.clone();
6247 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
6248 let action = action.downcast_ref().unwrap();
6249 if phase == DispatchPhase::Bubble {
6250 view.update(cx, |editor, cx| {
6251 listener(editor, action, cx);
6252 })
6253 }
6254 })
6255}
6256
6257fn compute_auto_height_layout(
6258 editor: &mut Editor,
6259 max_lines: usize,
6260 max_line_number_width: Pixels,
6261 known_dimensions: Size<Option<Pixels>>,
6262 available_width: AvailableSpace,
6263 cx: &mut ViewContext<Editor>,
6264) -> Option<Size<Pixels>> {
6265 let width = known_dimensions.width.or({
6266 if let AvailableSpace::Definite(available_width) = available_width {
6267 Some(available_width)
6268 } else {
6269 None
6270 }
6271 })?;
6272 if let Some(height) = known_dimensions.height {
6273 return Some(size(width, height));
6274 }
6275
6276 let style = editor.style.as_ref().unwrap();
6277 let font_id = cx.text_system().resolve_font(&style.text.font());
6278 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6279 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6280 let em_width = cx
6281 .text_system()
6282 .typographic_bounds(font_id, font_size, 'm')
6283 .unwrap()
6284 .size
6285 .width;
6286
6287 let mut snapshot = editor.snapshot(cx);
6288 let gutter_dimensions =
6289 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
6290
6291 editor.gutter_dimensions = gutter_dimensions;
6292 let text_width = width - gutter_dimensions.width;
6293 let overscroll = size(em_width, px(0.));
6294
6295 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
6296 if editor.set_wrap_width(Some(editor_width), cx) {
6297 snapshot = editor.snapshot(cx);
6298 }
6299
6300 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
6301 let height = scroll_height
6302 .max(line_height)
6303 .min(line_height * max_lines as f32);
6304
6305 Some(size(width, height))
6306}
6307
6308#[cfg(test)]
6309mod tests {
6310 use super::*;
6311 use crate::{
6312 display_map::{BlockDisposition, BlockProperties},
6313 editor_tests::{init_test, update_test_language_settings},
6314 Editor, MultiBuffer,
6315 };
6316 use gpui::{TestAppContext, VisualTestContext};
6317 use language::language_settings;
6318 use log::info;
6319 use std::num::NonZeroU32;
6320 use ui::Context;
6321 use util::test::sample_text;
6322
6323 #[gpui::test]
6324 fn test_shape_line_numbers(cx: &mut TestAppContext) {
6325 init_test(cx, |_| {});
6326 let window = cx.add_window(|cx| {
6327 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6328 Editor::new(EditorMode::Full, buffer, None, true, cx)
6329 });
6330
6331 let editor = window.root(cx).unwrap();
6332 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6333 let element = EditorElement::new(&editor, style);
6334 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
6335
6336 let layouts = cx
6337 .update_window(*window, |_, cx| {
6338 element.layout_line_numbers(
6339 DisplayRow(0)..DisplayRow(6),
6340 (0..6).map(MultiBufferRow).map(Some),
6341 &Default::default(),
6342 Some(DisplayPoint::new(DisplayRow(0), 0)),
6343 &snapshot,
6344 cx,
6345 )
6346 })
6347 .unwrap();
6348 assert_eq!(layouts.len(), 6);
6349
6350 let relative_rows = window
6351 .update(cx, |editor, cx| {
6352 let snapshot = editor.snapshot(cx);
6353 element.calculate_relative_line_numbers(
6354 &snapshot,
6355 &(DisplayRow(0)..DisplayRow(6)),
6356 Some(DisplayRow(3)),
6357 )
6358 })
6359 .unwrap();
6360 assert_eq!(relative_rows[&DisplayRow(0)], 3);
6361 assert_eq!(relative_rows[&DisplayRow(1)], 2);
6362 assert_eq!(relative_rows[&DisplayRow(2)], 1);
6363 // current line has no relative number
6364 assert_eq!(relative_rows[&DisplayRow(4)], 1);
6365 assert_eq!(relative_rows[&DisplayRow(5)], 2);
6366
6367 // works if cursor is before screen
6368 let relative_rows = window
6369 .update(cx, |editor, cx| {
6370 let snapshot = editor.snapshot(cx);
6371 element.calculate_relative_line_numbers(
6372 &snapshot,
6373 &(DisplayRow(3)..DisplayRow(6)),
6374 Some(DisplayRow(1)),
6375 )
6376 })
6377 .unwrap();
6378 assert_eq!(relative_rows.len(), 3);
6379 assert_eq!(relative_rows[&DisplayRow(3)], 2);
6380 assert_eq!(relative_rows[&DisplayRow(4)], 3);
6381 assert_eq!(relative_rows[&DisplayRow(5)], 4);
6382
6383 // works if cursor is after screen
6384 let relative_rows = window
6385 .update(cx, |editor, cx| {
6386 let snapshot = editor.snapshot(cx);
6387 element.calculate_relative_line_numbers(
6388 &snapshot,
6389 &(DisplayRow(0)..DisplayRow(3)),
6390 Some(DisplayRow(6)),
6391 )
6392 })
6393 .unwrap();
6394 assert_eq!(relative_rows.len(), 3);
6395 assert_eq!(relative_rows[&DisplayRow(0)], 5);
6396 assert_eq!(relative_rows[&DisplayRow(1)], 4);
6397 assert_eq!(relative_rows[&DisplayRow(2)], 3);
6398 }
6399
6400 #[gpui::test]
6401 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
6402 init_test(cx, |_| {});
6403
6404 let window = cx.add_window(|cx| {
6405 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
6406 Editor::new(EditorMode::Full, buffer, None, true, cx)
6407 });
6408 let cx = &mut VisualTestContext::from_window(*window, cx);
6409 let editor = window.root(cx).unwrap();
6410 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6411
6412 window
6413 .update(cx, |editor, cx| {
6414 editor.cursor_shape = CursorShape::Block;
6415 editor.change_selections(None, cx, |s| {
6416 s.select_ranges([
6417 Point::new(0, 0)..Point::new(1, 0),
6418 Point::new(3, 2)..Point::new(3, 3),
6419 Point::new(5, 6)..Point::new(6, 0),
6420 ]);
6421 });
6422 })
6423 .unwrap();
6424
6425 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6426 EditorElement::new(&editor, style)
6427 });
6428
6429 assert_eq!(state.selections.len(), 1);
6430 let local_selections = &state.selections[0].1;
6431 assert_eq!(local_selections.len(), 3);
6432 // moves cursor back one line
6433 assert_eq!(
6434 local_selections[0].head,
6435 DisplayPoint::new(DisplayRow(0), 6)
6436 );
6437 assert_eq!(
6438 local_selections[0].range,
6439 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
6440 );
6441
6442 // moves cursor back one column
6443 assert_eq!(
6444 local_selections[1].range,
6445 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
6446 );
6447 assert_eq!(
6448 local_selections[1].head,
6449 DisplayPoint::new(DisplayRow(3), 2)
6450 );
6451
6452 // leaves cursor on the max point
6453 assert_eq!(
6454 local_selections[2].range,
6455 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
6456 );
6457 assert_eq!(
6458 local_selections[2].head,
6459 DisplayPoint::new(DisplayRow(6), 0)
6460 );
6461
6462 // active lines does not include 1 (even though the range of the selection does)
6463 assert_eq!(
6464 state.active_rows.keys().cloned().collect::<Vec<_>>(),
6465 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
6466 );
6467
6468 // multi-buffer support
6469 // in DisplayPoint coordinates, this is what we're dealing with:
6470 // 0: [[file
6471 // 1: header
6472 // 2: section]]
6473 // 3: aaaaaa
6474 // 4: bbbbbb
6475 // 5: cccccc
6476 // 6:
6477 // 7: [[footer]]
6478 // 8: [[header]]
6479 // 9: ffffff
6480 // 10: gggggg
6481 // 11: hhhhhh
6482 // 12:
6483 // 13: [[footer]]
6484 // 14: [[file
6485 // 15: header
6486 // 16: section]]
6487 // 17: bbbbbb
6488 // 18: cccccc
6489 // 19: dddddd
6490 // 20: [[footer]]
6491 let window = cx.add_window(|cx| {
6492 let buffer = MultiBuffer::build_multi(
6493 [
6494 (
6495 &(sample_text(8, 6, 'a') + "\n"),
6496 vec![
6497 Point::new(0, 0)..Point::new(3, 0),
6498 Point::new(4, 0)..Point::new(7, 0),
6499 ],
6500 ),
6501 (
6502 &(sample_text(8, 6, 'a') + "\n"),
6503 vec![Point::new(1, 0)..Point::new(3, 0)],
6504 ),
6505 ],
6506 cx,
6507 );
6508 Editor::new(EditorMode::Full, buffer, None, true, cx)
6509 });
6510 let editor = window.root(cx).unwrap();
6511 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6512 let _state = window.update(cx, |editor, cx| {
6513 editor.cursor_shape = CursorShape::Block;
6514 editor.change_selections(None, cx, |s| {
6515 s.select_display_ranges([
6516 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
6517 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
6518 ]);
6519 });
6520 });
6521
6522 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6523 EditorElement::new(&editor, style)
6524 });
6525 assert_eq!(state.selections.len(), 1);
6526 let local_selections = &state.selections[0].1;
6527 assert_eq!(local_selections.len(), 2);
6528
6529 // moves cursor on excerpt boundary back a line
6530 // and doesn't allow selection to bleed through
6531 assert_eq!(
6532 local_selections[0].range,
6533 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
6534 );
6535 assert_eq!(
6536 local_selections[0].head,
6537 DisplayPoint::new(DisplayRow(6), 0)
6538 );
6539 // moves cursor on buffer boundary back two lines
6540 // and doesn't allow selection to bleed through
6541 assert_eq!(
6542 local_selections[1].range,
6543 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
6544 );
6545 assert_eq!(
6546 local_selections[1].head,
6547 DisplayPoint::new(DisplayRow(12), 0)
6548 );
6549 }
6550
6551 #[gpui::test]
6552 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
6553 init_test(cx, |_| {});
6554
6555 let window = cx.add_window(|cx| {
6556 let buffer = MultiBuffer::build_simple("", cx);
6557 Editor::new(EditorMode::Full, buffer, None, true, cx)
6558 });
6559 let cx = &mut VisualTestContext::from_window(*window, cx);
6560 let editor = window.root(cx).unwrap();
6561 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6562 window
6563 .update(cx, |editor, cx| {
6564 editor.set_placeholder_text("hello", cx);
6565 editor.insert_blocks(
6566 [BlockProperties {
6567 style: BlockStyle::Fixed,
6568 disposition: BlockDisposition::Above,
6569 height: 3,
6570 position: Anchor::min(),
6571 render: Box::new(|cx| div().h(3. * cx.line_height()).into_any()),
6572 priority: 0,
6573 }],
6574 None,
6575 cx,
6576 );
6577
6578 // Blur the editor so that it displays placeholder text.
6579 cx.blur();
6580 })
6581 .unwrap();
6582
6583 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6584 EditorElement::new(&editor, style)
6585 });
6586 assert_eq!(state.position_map.line_layouts.len(), 4);
6587 assert_eq!(
6588 state
6589 .line_numbers
6590 .iter()
6591 .map(Option::is_some)
6592 .collect::<Vec<_>>(),
6593 &[false, false, false, true]
6594 );
6595 }
6596
6597 #[gpui::test]
6598 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
6599 const TAB_SIZE: u32 = 4;
6600
6601 let input_text = "\t \t|\t| a b";
6602 let expected_invisibles = vec![
6603 Invisible::Tab {
6604 line_start_offset: 0,
6605 line_end_offset: TAB_SIZE as usize,
6606 },
6607 Invisible::Whitespace {
6608 line_offset: TAB_SIZE as usize,
6609 },
6610 Invisible::Tab {
6611 line_start_offset: TAB_SIZE as usize + 1,
6612 line_end_offset: TAB_SIZE as usize * 2,
6613 },
6614 Invisible::Tab {
6615 line_start_offset: TAB_SIZE as usize * 2 + 1,
6616 line_end_offset: TAB_SIZE as usize * 3,
6617 },
6618 Invisible::Whitespace {
6619 line_offset: TAB_SIZE as usize * 3 + 1,
6620 },
6621 Invisible::Whitespace {
6622 line_offset: TAB_SIZE as usize * 3 + 3,
6623 },
6624 ];
6625 assert_eq!(
6626 expected_invisibles.len(),
6627 input_text
6628 .chars()
6629 .filter(|initial_char| initial_char.is_whitespace())
6630 .count(),
6631 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6632 );
6633
6634 init_test(cx, |s| {
6635 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6636 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
6637 });
6638
6639 let actual_invisibles =
6640 collect_invisibles_from_new_editor(cx, EditorMode::Full, input_text, px(500.0));
6641
6642 assert_eq!(expected_invisibles, actual_invisibles);
6643 }
6644
6645 #[gpui::test]
6646 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
6647 init_test(cx, |s| {
6648 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6649 s.defaults.tab_size = NonZeroU32::new(4);
6650 });
6651
6652 for editor_mode_without_invisibles in [
6653 EditorMode::SingleLine { auto_width: false },
6654 EditorMode::AutoHeight { max_lines: 100 },
6655 ] {
6656 let invisibles = collect_invisibles_from_new_editor(
6657 cx,
6658 editor_mode_without_invisibles,
6659 "\t\t\t| | a b",
6660 px(500.0),
6661 );
6662 assert!(invisibles.is_empty(),
6663 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
6664 }
6665 }
6666
6667 #[gpui::test]
6668 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
6669 let tab_size = 4;
6670 let input_text = "a\tbcd ".repeat(9);
6671 let repeated_invisibles = [
6672 Invisible::Tab {
6673 line_start_offset: 1,
6674 line_end_offset: tab_size as usize,
6675 },
6676 Invisible::Whitespace {
6677 line_offset: tab_size as usize + 3,
6678 },
6679 Invisible::Whitespace {
6680 line_offset: tab_size as usize + 4,
6681 },
6682 Invisible::Whitespace {
6683 line_offset: tab_size as usize + 5,
6684 },
6685 Invisible::Whitespace {
6686 line_offset: tab_size as usize + 6,
6687 },
6688 Invisible::Whitespace {
6689 line_offset: tab_size as usize + 7,
6690 },
6691 ];
6692 let expected_invisibles = std::iter::once(repeated_invisibles)
6693 .cycle()
6694 .take(9)
6695 .flatten()
6696 .collect::<Vec<_>>();
6697 assert_eq!(
6698 expected_invisibles.len(),
6699 input_text
6700 .chars()
6701 .filter(|initial_char| initial_char.is_whitespace())
6702 .count(),
6703 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6704 );
6705 info!("Expected invisibles: {expected_invisibles:?}");
6706
6707 init_test(cx, |_| {});
6708
6709 // Put the same string with repeating whitespace pattern into editors of various size,
6710 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
6711 let resize_step = 10.0;
6712 let mut editor_width = 200.0;
6713 while editor_width <= 1000.0 {
6714 update_test_language_settings(cx, |s| {
6715 s.defaults.tab_size = NonZeroU32::new(tab_size);
6716 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6717 s.defaults.preferred_line_length = Some(editor_width as u32);
6718 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
6719 });
6720
6721 let actual_invisibles = collect_invisibles_from_new_editor(
6722 cx,
6723 EditorMode::Full,
6724 &input_text,
6725 px(editor_width),
6726 );
6727
6728 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
6729 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
6730 let mut i = 0;
6731 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
6732 i = actual_index;
6733 match expected_invisibles.get(i) {
6734 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
6735 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
6736 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
6737 _ => {
6738 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
6739 }
6740 },
6741 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
6742 }
6743 }
6744 let missing_expected_invisibles = &expected_invisibles[i + 1..];
6745 assert!(
6746 missing_expected_invisibles.is_empty(),
6747 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
6748 );
6749
6750 editor_width += resize_step;
6751 }
6752 }
6753
6754 fn collect_invisibles_from_new_editor(
6755 cx: &mut TestAppContext,
6756 editor_mode: EditorMode,
6757 input_text: &str,
6758 editor_width: Pixels,
6759 ) -> Vec<Invisible> {
6760 info!(
6761 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
6762 editor_width.0
6763 );
6764 let window = cx.add_window(|cx| {
6765 let buffer = MultiBuffer::build_simple(input_text, cx);
6766 Editor::new(editor_mode, buffer, None, true, cx)
6767 });
6768 let cx = &mut VisualTestContext::from_window(*window, cx);
6769 let editor = window.root(cx).unwrap();
6770 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6771 window
6772 .update(cx, |editor, cx| {
6773 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
6774 editor.set_wrap_width(Some(editor_width), cx);
6775 })
6776 .unwrap();
6777 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6778 EditorElement::new(&editor, style)
6779 });
6780 state
6781 .position_map
6782 .line_layouts
6783 .iter()
6784 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
6785 .cloned()
6786 .collect()
6787 }
6788}