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