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