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 = if indent_guide.active {
2795 settings.active_line_width
2796 } else {
2797 settings.line_width
2798 }
2799 .clamp(1, 10);
2800 let mut line_indicator_width = 0.;
2801 if let Some(color) = line_color {
2802 cx.paint_quad(fill(
2803 Bounds {
2804 origin: indent_guide.origin,
2805 size: size(px(requested_line_width as f32), indent_guide.length),
2806 },
2807 color,
2808 ));
2809 line_indicator_width = requested_line_width as f32;
2810 }
2811
2812 if let Some(color) = background_color {
2813 let width = indent_guide.single_indent_width - px(line_indicator_width);
2814 cx.paint_quad(fill(
2815 Bounds {
2816 origin: point(
2817 indent_guide.origin.x + px(line_indicator_width),
2818 indent_guide.origin.y,
2819 ),
2820 size: size(width, indent_guide.length),
2821 },
2822 color,
2823 ));
2824 }
2825 }
2826 }
2827
2828 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2829 let line_height = layout.position_map.line_height;
2830 let scroll_position = layout.position_map.snapshot.scroll_position();
2831 let scroll_top = scroll_position.y * line_height;
2832
2833 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
2834
2835 for (ix, line) in layout.line_numbers.iter().enumerate() {
2836 if let Some(line) = line {
2837 let line_origin = layout.gutter_hitbox.origin
2838 + point(
2839 layout.gutter_hitbox.size.width
2840 - line.width
2841 - layout.gutter_dimensions.right_padding,
2842 ix as f32 * line_height - (scroll_top % line_height),
2843 );
2844
2845 line.paint(line_origin, line_height, cx).log_err();
2846 }
2847 }
2848 }
2849
2850 fn paint_diff_hunks(layout: &EditorLayout, cx: &mut WindowContext) {
2851 if layout.display_hunks.is_empty() {
2852 return;
2853 }
2854
2855 let line_height = layout.position_map.line_height;
2856 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2857 for (hunk, hitbox) in &layout.display_hunks {
2858 let hunk_to_paint = match hunk {
2859 DisplayDiffHunk::Folded { .. } => {
2860 let hunk_bounds = Self::diff_hunk_bounds(
2861 &layout.position_map.snapshot,
2862 line_height,
2863 layout.gutter_hitbox.bounds,
2864 &hunk,
2865 );
2866 Some((
2867 hunk_bounds,
2868 cx.theme().status().modified,
2869 Corners::all(1. * line_height),
2870 ))
2871 }
2872 DisplayDiffHunk::Unfolded { status, .. } => {
2873 hitbox.as_ref().map(|hunk_hitbox| match status {
2874 DiffHunkStatus::Added => (
2875 hunk_hitbox.bounds,
2876 cx.theme().status().created,
2877 Corners::all(0.05 * line_height),
2878 ),
2879 DiffHunkStatus::Modified => (
2880 hunk_hitbox.bounds,
2881 cx.theme().status().modified,
2882 Corners::all(0.05 * line_height),
2883 ),
2884 DiffHunkStatus::Removed => (
2885 Bounds::new(
2886 point(
2887 hunk_hitbox.origin.x - hunk_hitbox.size.width,
2888 hunk_hitbox.origin.y,
2889 ),
2890 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
2891 ),
2892 cx.theme().status().deleted,
2893 Corners::all(1. * line_height),
2894 ),
2895 })
2896 }
2897 };
2898
2899 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
2900 cx.paint_quad(quad(
2901 hunk_bounds,
2902 corner_radii,
2903 background_color,
2904 Edges::default(),
2905 transparent_black(),
2906 ));
2907 }
2908 }
2909 });
2910 }
2911
2912 fn diff_hunk_bounds(
2913 snapshot: &EditorSnapshot,
2914 line_height: Pixels,
2915 bounds: Bounds<Pixels>,
2916 hunk: &DisplayDiffHunk,
2917 ) -> Bounds<Pixels> {
2918 let scroll_position = snapshot.scroll_position();
2919 let scroll_top = scroll_position.y * line_height;
2920
2921 match hunk {
2922 DisplayDiffHunk::Folded { display_row, .. } => {
2923 let start_y = display_row.as_f32() * line_height - scroll_top;
2924 let end_y = start_y + line_height;
2925
2926 let width = 0.275 * line_height;
2927 let highlight_origin = bounds.origin + point(px(0.), start_y);
2928 let highlight_size = size(width, end_y - start_y);
2929 Bounds::new(highlight_origin, highlight_size)
2930 }
2931 DisplayDiffHunk::Unfolded {
2932 display_row_range,
2933 status,
2934 ..
2935 } => match status {
2936 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
2937 let start_row = display_row_range.start;
2938 let end_row = display_row_range.end;
2939 // If we're in a multibuffer, row range span might include an
2940 // excerpt header, so if we were to draw the marker straight away,
2941 // the hunk might include the rows of that header.
2942 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
2943 // Instead, we simply check whether the range we're dealing with includes
2944 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
2945 let end_row_in_current_excerpt = snapshot
2946 .blocks_in_range(start_row..end_row)
2947 .find_map(|(start_row, block)| {
2948 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
2949 Some(start_row)
2950 } else {
2951 None
2952 }
2953 })
2954 .unwrap_or(end_row);
2955
2956 let start_y = start_row.as_f32() * line_height - scroll_top;
2957 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
2958
2959 let width = 0.275 * line_height;
2960 let highlight_origin = bounds.origin + point(px(0.), start_y);
2961 let highlight_size = size(width, end_y - start_y);
2962 Bounds::new(highlight_origin, highlight_size)
2963 }
2964 DiffHunkStatus::Removed => {
2965 let row = display_row_range.start;
2966
2967 let offset = line_height / 2.;
2968 let start_y = row.as_f32() * line_height - offset - scroll_top;
2969 let end_y = start_y + line_height;
2970
2971 let width = 0.35 * line_height;
2972 let highlight_origin = bounds.origin + point(px(0.), start_y);
2973 let highlight_size = size(width, end_y - start_y);
2974 Bounds::new(highlight_origin, highlight_size)
2975 }
2976 },
2977 }
2978 }
2979
2980 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2981 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2982 cx.with_element_namespace("gutter_fold_toggles", |cx| {
2983 for fold_indicator in layout.gutter_fold_toggles.iter_mut().flatten() {
2984 fold_indicator.paint(cx);
2985 }
2986 });
2987
2988 for test_indicators in layout.test_indicators.iter_mut() {
2989 test_indicators.paint(cx);
2990 }
2991
2992 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
2993 indicator.paint(cx);
2994 }
2995 });
2996 }
2997
2998 fn paint_gutter_highlights(&self, layout: &EditorLayout, cx: &mut WindowContext) {
2999 for (_, hunk_hitbox) in &layout.display_hunks {
3000 if let Some(hunk_hitbox) = hunk_hitbox {
3001 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
3002 }
3003 }
3004
3005 let show_git_gutter = layout
3006 .position_map
3007 .snapshot
3008 .show_git_diff_gutter
3009 .unwrap_or_else(|| {
3010 matches!(
3011 ProjectSettings::get_global(cx).git.git_gutter,
3012 Some(GitGutterSetting::TrackedFiles)
3013 )
3014 });
3015 if show_git_gutter {
3016 Self::paint_diff_hunks(layout, cx)
3017 }
3018
3019 let highlight_width = 0.275 * layout.position_map.line_height;
3020 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
3021 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3022 for (range, color) in &layout.highlighted_gutter_ranges {
3023 let start_row = if range.start.row() < layout.visible_display_row_range.start {
3024 layout.visible_display_row_range.start - DisplayRow(1)
3025 } else {
3026 range.start.row()
3027 };
3028 let end_row = if range.end.row() > layout.visible_display_row_range.end {
3029 layout.visible_display_row_range.end + DisplayRow(1)
3030 } else {
3031 range.end.row()
3032 };
3033
3034 let start_y = layout.gutter_hitbox.top()
3035 + start_row.0 as f32 * layout.position_map.line_height
3036 - layout.position_map.scroll_pixel_position.y;
3037 let end_y = layout.gutter_hitbox.top()
3038 + (end_row.0 + 1) as f32 * layout.position_map.line_height
3039 - layout.position_map.scroll_pixel_position.y;
3040 let bounds = Bounds::from_corners(
3041 point(layout.gutter_hitbox.left(), start_y),
3042 point(layout.gutter_hitbox.left() + highlight_width, end_y),
3043 );
3044 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
3045 }
3046 });
3047 }
3048
3049 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3050 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
3051 return;
3052 };
3053
3054 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3055 for mut blame_element in blamed_display_rows.into_iter() {
3056 blame_element.paint(cx);
3057 }
3058 })
3059 }
3060
3061 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3062 cx.with_content_mask(
3063 Some(ContentMask {
3064 bounds: layout.text_hitbox.bounds,
3065 }),
3066 |cx| {
3067 let cursor_style = if self
3068 .editor
3069 .read(cx)
3070 .hovered_link_state
3071 .as_ref()
3072 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
3073 {
3074 CursorStyle::PointingHand
3075 } else {
3076 CursorStyle::IBeam
3077 };
3078 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
3079
3080 let invisible_display_ranges = self.paint_highlights(layout, cx);
3081 self.paint_lines(&invisible_display_ranges, layout, cx);
3082 self.paint_redactions(layout, cx);
3083 self.paint_cursors(layout, cx);
3084 self.paint_inline_blame(layout, cx);
3085 cx.with_element_namespace("crease_trailers", |cx| {
3086 for trailer in layout.crease_trailers.iter_mut().flatten() {
3087 trailer.element.paint(cx);
3088 }
3089 });
3090 },
3091 )
3092 }
3093
3094 fn paint_highlights(
3095 &mut self,
3096 layout: &mut EditorLayout,
3097 cx: &mut WindowContext,
3098 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
3099 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3100 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
3101 let line_end_overshoot = 0.15 * layout.position_map.line_height;
3102 for (range, color) in &layout.highlighted_ranges {
3103 self.paint_highlighted_range(
3104 range.clone(),
3105 *color,
3106 Pixels::ZERO,
3107 line_end_overshoot,
3108 layout,
3109 cx,
3110 );
3111 }
3112
3113 let corner_radius = 0.15 * layout.position_map.line_height;
3114
3115 for (player_color, selections) in &layout.selections {
3116 for selection in selections.into_iter() {
3117 self.paint_highlighted_range(
3118 selection.range.clone(),
3119 player_color.selection,
3120 corner_radius,
3121 corner_radius * 2.,
3122 layout,
3123 cx,
3124 );
3125
3126 if selection.is_local && !selection.range.is_empty() {
3127 invisible_display_ranges.push(selection.range.clone());
3128 }
3129 }
3130 }
3131 invisible_display_ranges
3132 })
3133 }
3134
3135 fn paint_lines(
3136 &mut self,
3137 invisible_display_ranges: &[Range<DisplayPoint>],
3138 layout: &mut EditorLayout,
3139 cx: &mut WindowContext,
3140 ) {
3141 let whitespace_setting = self
3142 .editor
3143 .read(cx)
3144 .buffer
3145 .read(cx)
3146 .settings_at(0, cx)
3147 .show_whitespaces;
3148
3149 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
3150 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
3151 line_with_invisibles.draw(
3152 layout,
3153 row,
3154 layout.content_origin,
3155 whitespace_setting,
3156 invisible_display_ranges,
3157 cx,
3158 )
3159 }
3160
3161 for line_element in &mut layout.line_elements {
3162 line_element.paint(cx);
3163 }
3164 }
3165
3166 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3167 if layout.redacted_ranges.is_empty() {
3168 return;
3169 }
3170
3171 let line_end_overshoot = layout.line_end_overshoot();
3172
3173 // A softer than perfect black
3174 let redaction_color = gpui::rgb(0x0e1111);
3175
3176 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3177 for range in layout.redacted_ranges.iter() {
3178 self.paint_highlighted_range(
3179 range.clone(),
3180 redaction_color.into(),
3181 Pixels::ZERO,
3182 line_end_overshoot,
3183 layout,
3184 cx,
3185 );
3186 }
3187 });
3188 }
3189
3190 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3191 for cursor in &mut layout.visible_cursors {
3192 cursor.paint(layout.content_origin, cx);
3193 }
3194 }
3195
3196 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3197 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
3198 return;
3199 };
3200
3201 let thumb_bounds = scrollbar_layout.thumb_bounds();
3202 if scrollbar_layout.visible {
3203 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
3204 cx.paint_quad(quad(
3205 scrollbar_layout.hitbox.bounds,
3206 Corners::default(),
3207 cx.theme().colors().scrollbar_track_background,
3208 Edges {
3209 top: Pixels::ZERO,
3210 right: Pixels::ZERO,
3211 bottom: Pixels::ZERO,
3212 left: ScrollbarLayout::BORDER_WIDTH,
3213 },
3214 cx.theme().colors().scrollbar_track_border,
3215 ));
3216
3217 let fast_markers =
3218 self.collect_fast_scrollbar_markers(layout, scrollbar_layout, cx);
3219 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
3220 self.refresh_slow_scrollbar_markers(layout, scrollbar_layout, cx);
3221
3222 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
3223 for marker in markers.iter().chain(&fast_markers) {
3224 let mut marker = marker.clone();
3225 marker.bounds.origin += scrollbar_layout.hitbox.origin;
3226 cx.paint_quad(marker);
3227 }
3228
3229 cx.paint_quad(quad(
3230 thumb_bounds,
3231 Corners::default(),
3232 cx.theme().colors().scrollbar_thumb_background,
3233 Edges {
3234 top: Pixels::ZERO,
3235 right: Pixels::ZERO,
3236 bottom: Pixels::ZERO,
3237 left: ScrollbarLayout::BORDER_WIDTH,
3238 },
3239 cx.theme().colors().scrollbar_thumb_border,
3240 ));
3241 });
3242 }
3243
3244 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
3245
3246 let row_height = scrollbar_layout.row_height;
3247 let row_range = scrollbar_layout.visible_row_range.clone();
3248
3249 cx.on_mouse_event({
3250 let editor = self.editor.clone();
3251 let hitbox = scrollbar_layout.hitbox.clone();
3252 let mut mouse_position = cx.mouse_position();
3253 move |event: &MouseMoveEvent, phase, cx| {
3254 if phase == DispatchPhase::Capture {
3255 return;
3256 }
3257
3258 editor.update(cx, |editor, cx| {
3259 if event.pressed_button == Some(MouseButton::Left)
3260 && editor.scroll_manager.is_dragging_scrollbar()
3261 {
3262 let y = mouse_position.y;
3263 let new_y = event.position.y;
3264 if (hitbox.top()..hitbox.bottom()).contains(&y) {
3265 let mut position = editor.scroll_position(cx);
3266 position.y += (new_y - y) / row_height;
3267 if position.y < 0.0 {
3268 position.y = 0.0;
3269 }
3270 editor.set_scroll_position(position, cx);
3271 }
3272
3273 cx.stop_propagation();
3274 } else {
3275 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3276 if hitbox.is_hovered(cx) {
3277 editor.scroll_manager.show_scrollbar(cx);
3278 }
3279 }
3280 mouse_position = event.position;
3281 })
3282 }
3283 });
3284
3285 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
3286 cx.on_mouse_event({
3287 let editor = self.editor.clone();
3288 move |_: &MouseUpEvent, phase, cx| {
3289 if phase == DispatchPhase::Capture {
3290 return;
3291 }
3292
3293 editor.update(cx, |editor, cx| {
3294 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3295 cx.stop_propagation();
3296 });
3297 }
3298 });
3299 } else {
3300 cx.on_mouse_event({
3301 let editor = self.editor.clone();
3302 let hitbox = scrollbar_layout.hitbox.clone();
3303 move |event: &MouseDownEvent, phase, cx| {
3304 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
3305 return;
3306 }
3307
3308 editor.update(cx, |editor, cx| {
3309 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
3310
3311 let y = event.position.y;
3312 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
3313 let center_row = ((y - hitbox.top()) / row_height).round() as u32;
3314 let top_row = center_row
3315 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
3316 let mut position = editor.scroll_position(cx);
3317 position.y = top_row as f32;
3318 editor.set_scroll_position(position, cx);
3319 } else {
3320 editor.scroll_manager.show_scrollbar(cx);
3321 }
3322
3323 cx.stop_propagation();
3324 });
3325 }
3326 });
3327 }
3328 }
3329
3330 fn collect_fast_scrollbar_markers(
3331 &self,
3332 layout: &EditorLayout,
3333 scrollbar_layout: &ScrollbarLayout,
3334 cx: &mut WindowContext,
3335 ) -> Vec<PaintQuad> {
3336 const LIMIT: usize = 100;
3337 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
3338 return vec![];
3339 }
3340 let cursor_ranges = layout
3341 .cursors
3342 .iter()
3343 .map(|(point, color)| ColoredRange {
3344 start: point.row(),
3345 end: point.row(),
3346 color: *color,
3347 })
3348 .collect_vec();
3349 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
3350 }
3351
3352 fn refresh_slow_scrollbar_markers(
3353 &self,
3354 layout: &EditorLayout,
3355 scrollbar_layout: &ScrollbarLayout,
3356 cx: &mut WindowContext,
3357 ) {
3358 self.editor.update(cx, |editor, cx| {
3359 if !editor.is_singleton(cx)
3360 || !editor
3361 .scrollbar_marker_state
3362 .should_refresh(scrollbar_layout.hitbox.size)
3363 {
3364 return;
3365 }
3366
3367 let scrollbar_layout = scrollbar_layout.clone();
3368 let background_highlights = editor.background_highlights.clone();
3369 let snapshot = layout.position_map.snapshot.clone();
3370 let theme = cx.theme().clone();
3371 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
3372
3373 editor.scrollbar_marker_state.dirty = false;
3374 editor.scrollbar_marker_state.pending_refresh =
3375 Some(cx.spawn(|editor, mut cx| async move {
3376 let scrollbar_size = scrollbar_layout.hitbox.size;
3377 let scrollbar_markers = cx
3378 .background_executor()
3379 .spawn(async move {
3380 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
3381 let mut marker_quads = Vec::new();
3382 if scrollbar_settings.git_diff {
3383 let marker_row_ranges = snapshot
3384 .buffer_snapshot
3385 .git_diff_hunks_in_range(
3386 MultiBufferRow::MIN..MultiBufferRow::MAX,
3387 )
3388 .map(|hunk| {
3389 let start_display_row =
3390 MultiBufferPoint::new(hunk.associated_range.start.0, 0)
3391 .to_display_point(&snapshot.display_snapshot)
3392 .row();
3393 let mut end_display_row =
3394 MultiBufferPoint::new(hunk.associated_range.end.0, 0)
3395 .to_display_point(&snapshot.display_snapshot)
3396 .row();
3397 if end_display_row != start_display_row {
3398 end_display_row.0 -= 1;
3399 }
3400 let color = match hunk_status(&hunk) {
3401 DiffHunkStatus::Added => theme.status().created,
3402 DiffHunkStatus::Modified => theme.status().modified,
3403 DiffHunkStatus::Removed => theme.status().deleted,
3404 };
3405 ColoredRange {
3406 start: start_display_row,
3407 end: end_display_row,
3408 color,
3409 }
3410 });
3411
3412 marker_quads.extend(
3413 scrollbar_layout
3414 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
3415 );
3416 }
3417
3418 for (background_highlight_id, (_, background_ranges)) in
3419 background_highlights.iter()
3420 {
3421 let is_search_highlights = *background_highlight_id
3422 == TypeId::of::<BufferSearchHighlights>();
3423 let is_symbol_occurrences = *background_highlight_id
3424 == TypeId::of::<DocumentHighlightRead>()
3425 || *background_highlight_id
3426 == TypeId::of::<DocumentHighlightWrite>();
3427 if (is_search_highlights && scrollbar_settings.search_results)
3428 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
3429 {
3430 let mut color = theme.status().info;
3431 if is_symbol_occurrences {
3432 color.fade_out(0.5);
3433 }
3434 let marker_row_ranges =
3435 background_ranges.into_iter().map(|range| {
3436 let display_start = range
3437 .start
3438 .to_display_point(&snapshot.display_snapshot);
3439 let display_end = range
3440 .end
3441 .to_display_point(&snapshot.display_snapshot);
3442 ColoredRange {
3443 start: display_start.row(),
3444 end: display_end.row(),
3445 color,
3446 }
3447 });
3448 marker_quads.extend(
3449 scrollbar_layout
3450 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
3451 );
3452 }
3453 }
3454
3455 if scrollbar_settings.diagnostics {
3456 let diagnostics = snapshot
3457 .buffer_snapshot
3458 .diagnostics_in_range::<_, Point>(
3459 Point::zero()..max_point,
3460 false,
3461 )
3462 // We want to sort by severity, in order to paint the most severe diagnostics last.
3463 .sorted_by_key(|diagnostic| {
3464 std::cmp::Reverse(diagnostic.diagnostic.severity)
3465 });
3466
3467 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
3468 let start_display = diagnostic
3469 .range
3470 .start
3471 .to_display_point(&snapshot.display_snapshot);
3472 let end_display = diagnostic
3473 .range
3474 .end
3475 .to_display_point(&snapshot.display_snapshot);
3476 let color = match diagnostic.diagnostic.severity {
3477 DiagnosticSeverity::ERROR => theme.status().error,
3478 DiagnosticSeverity::WARNING => theme.status().warning,
3479 DiagnosticSeverity::INFORMATION => theme.status().info,
3480 _ => theme.status().hint,
3481 };
3482 ColoredRange {
3483 start: start_display.row(),
3484 end: end_display.row(),
3485 color,
3486 }
3487 });
3488 marker_quads.extend(
3489 scrollbar_layout
3490 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
3491 );
3492 }
3493
3494 Arc::from(marker_quads)
3495 })
3496 .await;
3497
3498 editor.update(&mut cx, |editor, cx| {
3499 editor.scrollbar_marker_state.markers = scrollbar_markers;
3500 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
3501 editor.scrollbar_marker_state.pending_refresh = None;
3502 cx.notify();
3503 })?;
3504
3505 Ok(())
3506 }));
3507 });
3508 }
3509
3510 #[allow(clippy::too_many_arguments)]
3511 fn paint_highlighted_range(
3512 &self,
3513 range: Range<DisplayPoint>,
3514 color: Hsla,
3515 corner_radius: Pixels,
3516 line_end_overshoot: Pixels,
3517 layout: &EditorLayout,
3518 cx: &mut WindowContext,
3519 ) {
3520 let start_row = layout.visible_display_row_range.start;
3521 let end_row = layout.visible_display_row_range.end;
3522 if range.start != range.end {
3523 let row_range = if range.end.column() == 0 {
3524 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3525 } else {
3526 cmp::max(range.start.row(), start_row)
3527 ..cmp::min(range.end.row().next_row(), end_row)
3528 };
3529
3530 let highlighted_range = HighlightedRange {
3531 color,
3532 line_height: layout.position_map.line_height,
3533 corner_radius,
3534 start_y: layout.content_origin.y
3535 + row_range.start.as_f32() * layout.position_map.line_height
3536 - layout.position_map.scroll_pixel_position.y,
3537 lines: row_range
3538 .iter_rows()
3539 .map(|row| {
3540 let line_layout =
3541 &layout.position_map.line_layouts[row.minus(start_row) as usize];
3542 HighlightedRangeLine {
3543 start_x: if row == range.start.row() {
3544 layout.content_origin.x
3545 + line_layout.x_for_index(range.start.column() as usize)
3546 - layout.position_map.scroll_pixel_position.x
3547 } else {
3548 layout.content_origin.x
3549 - layout.position_map.scroll_pixel_position.x
3550 },
3551 end_x: if row == range.end.row() {
3552 layout.content_origin.x
3553 + line_layout.x_for_index(range.end.column() as usize)
3554 - layout.position_map.scroll_pixel_position.x
3555 } else {
3556 layout.content_origin.x + line_layout.width + line_end_overshoot
3557 - layout.position_map.scroll_pixel_position.x
3558 },
3559 }
3560 })
3561 .collect(),
3562 };
3563
3564 highlighted_range.paint(layout.text_hitbox.bounds, cx);
3565 }
3566 }
3567
3568 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3569 if let Some(mut inline_blame) = layout.inline_blame.take() {
3570 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3571 inline_blame.paint(cx);
3572 })
3573 }
3574 }
3575
3576 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3577 for mut block in layout.blocks.drain(..) {
3578 block.element.paint(cx);
3579 }
3580 }
3581
3582 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3583 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
3584 mouse_context_menu.paint(cx);
3585 }
3586 }
3587
3588 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3589 cx.on_mouse_event({
3590 let position_map = layout.position_map.clone();
3591 let editor = self.editor.clone();
3592 let hitbox = layout.hitbox.clone();
3593 let mut delta = ScrollDelta::default();
3594
3595 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
3596 // accidentally turn off their scrolling.
3597 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
3598
3599 move |event: &ScrollWheelEvent, phase, cx| {
3600 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
3601 delta = delta.coalesce(event.delta);
3602 editor.update(cx, |editor, cx| {
3603 let position_map: &PositionMap = &position_map;
3604
3605 let line_height = position_map.line_height;
3606 let max_glyph_width = position_map.em_width;
3607 let (delta, axis) = match delta {
3608 gpui::ScrollDelta::Pixels(mut pixels) => {
3609 //Trackpad
3610 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
3611 (pixels, axis)
3612 }
3613
3614 gpui::ScrollDelta::Lines(lines) => {
3615 //Not trackpad
3616 let pixels =
3617 point(lines.x * max_glyph_width, lines.y * line_height);
3618 (pixels, None)
3619 }
3620 };
3621
3622 let current_scroll_position = position_map.snapshot.scroll_position();
3623 let x = (current_scroll_position.x * max_glyph_width
3624 - (delta.x * scroll_sensitivity))
3625 / max_glyph_width;
3626 let y = (current_scroll_position.y * line_height
3627 - (delta.y * scroll_sensitivity))
3628 / line_height;
3629 let mut scroll_position =
3630 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
3631 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
3632 if forbid_vertical_scroll {
3633 scroll_position.y = current_scroll_position.y;
3634 if scroll_position == current_scroll_position {
3635 return;
3636 }
3637 }
3638 editor.scroll(scroll_position, axis, cx);
3639 cx.stop_propagation();
3640 });
3641 }
3642 }
3643 });
3644 }
3645
3646 fn paint_mouse_listeners(
3647 &mut self,
3648 layout: &EditorLayout,
3649 hovered_hunk: Option<HunkToExpand>,
3650 cx: &mut WindowContext,
3651 ) {
3652 self.paint_scroll_wheel_listener(layout, cx);
3653
3654 cx.on_mouse_event({
3655 let position_map = layout.position_map.clone();
3656 let editor = self.editor.clone();
3657 let text_hitbox = layout.text_hitbox.clone();
3658 let gutter_hitbox = layout.gutter_hitbox.clone();
3659
3660 move |event: &MouseDownEvent, phase, cx| {
3661 if phase == DispatchPhase::Bubble {
3662 match event.button {
3663 MouseButton::Left => editor.update(cx, |editor, cx| {
3664 Self::mouse_left_down(
3665 editor,
3666 event,
3667 hovered_hunk.as_ref(),
3668 &position_map,
3669 &text_hitbox,
3670 &gutter_hitbox,
3671 cx,
3672 );
3673 }),
3674 MouseButton::Right => editor.update(cx, |editor, cx| {
3675 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
3676 }),
3677 MouseButton::Middle => editor.update(cx, |editor, cx| {
3678 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
3679 }),
3680 _ => {}
3681 };
3682 }
3683 }
3684 });
3685
3686 cx.on_mouse_event({
3687 let editor = self.editor.clone();
3688 let position_map = layout.position_map.clone();
3689 let text_hitbox = layout.text_hitbox.clone();
3690
3691 move |event: &MouseUpEvent, phase, cx| {
3692 if phase == DispatchPhase::Bubble {
3693 editor.update(cx, |editor, cx| {
3694 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
3695 });
3696 }
3697 }
3698 });
3699 cx.on_mouse_event({
3700 let position_map = layout.position_map.clone();
3701 let editor = self.editor.clone();
3702 let text_hitbox = layout.text_hitbox.clone();
3703 let gutter_hitbox = layout.gutter_hitbox.clone();
3704
3705 move |event: &MouseMoveEvent, phase, cx| {
3706 if phase == DispatchPhase::Bubble {
3707 editor.update(cx, |editor, cx| {
3708 if event.pressed_button == Some(MouseButton::Left)
3709 || event.pressed_button == Some(MouseButton::Middle)
3710 {
3711 Self::mouse_dragged(
3712 editor,
3713 event,
3714 &position_map,
3715 text_hitbox.bounds,
3716 cx,
3717 )
3718 }
3719
3720 Self::mouse_moved(
3721 editor,
3722 event,
3723 &position_map,
3724 &text_hitbox,
3725 &gutter_hitbox,
3726 cx,
3727 )
3728 });
3729 }
3730 }
3731 });
3732 }
3733
3734 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
3735 bounds.upper_right().x - self.style.scrollbar_width
3736 }
3737
3738 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
3739 let style = &self.style;
3740 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3741 let layout = cx
3742 .text_system()
3743 .shape_line(
3744 SharedString::from(" ".repeat(column)),
3745 font_size,
3746 &[TextRun {
3747 len: column,
3748 font: style.text.font(),
3749 color: Hsla::default(),
3750 background_color: None,
3751 underline: None,
3752 strikethrough: None,
3753 }],
3754 )
3755 .unwrap();
3756
3757 layout.width
3758 }
3759
3760 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
3761 let digit_count = snapshot
3762 .max_buffer_row()
3763 .next_row()
3764 .as_f32()
3765 .log10()
3766 .floor() as usize
3767 + 1;
3768 self.column_pixels(digit_count, cx)
3769 }
3770}
3771
3772fn prepaint_gutter_button(
3773 button: IconButton,
3774 row: DisplayRow,
3775 line_height: Pixels,
3776 gutter_dimensions: &GutterDimensions,
3777 scroll_pixel_position: gpui::Point<Pixels>,
3778 gutter_hitbox: &Hitbox,
3779 cx: &mut WindowContext<'_>,
3780) -> AnyElement {
3781 let mut button = button.into_any_element();
3782 let available_space = size(
3783 AvailableSpace::MinContent,
3784 AvailableSpace::Definite(line_height),
3785 );
3786 let indicator_size = button.layout_as_root(available_space, cx);
3787
3788 let blame_width = gutter_dimensions
3789 .git_blame_entries_width
3790 .unwrap_or(Pixels::ZERO);
3791
3792 let mut x = blame_width;
3793 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
3794 - indicator_size.width
3795 - blame_width;
3796 x += available_width / 2.;
3797
3798 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
3799 y += (line_height - indicator_size.height) / 2.;
3800
3801 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
3802 button
3803}
3804
3805fn render_inline_blame_entry(
3806 blame: &gpui::Model<GitBlame>,
3807 blame_entry: BlameEntry,
3808 style: &EditorStyle,
3809 workspace: Option<WeakView<Workspace>>,
3810 cx: &mut WindowContext<'_>,
3811) -> AnyElement {
3812 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry, cx);
3813
3814 let author = blame_entry.author.as_deref().unwrap_or_default();
3815 let text = format!("{}, {}", author, relative_timestamp);
3816
3817 let details = blame.read(cx).details_for_entry(&blame_entry);
3818
3819 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
3820
3821 h_flex()
3822 .id("inline-blame")
3823 .w_full()
3824 .font_family(style.text.font().family)
3825 .text_color(cx.theme().status().hint)
3826 .line_height(style.text.line_height)
3827 .child(Icon::new(IconName::FileGit).color(Color::Hint))
3828 .child(text)
3829 .gap_2()
3830 .hoverable_tooltip(move |_| tooltip.clone().into())
3831 .into_any()
3832}
3833
3834fn render_blame_entry(
3835 ix: usize,
3836 blame: &gpui::Model<GitBlame>,
3837 blame_entry: BlameEntry,
3838 style: &EditorStyle,
3839 last_used_color: &mut Option<(PlayerColor, Oid)>,
3840 editor: View<Editor>,
3841 cx: &mut WindowContext<'_>,
3842) -> AnyElement {
3843 let mut sha_color = cx
3844 .theme()
3845 .players()
3846 .color_for_participant(blame_entry.sha.into());
3847 // If the last color we used is the same as the one we get for this line, but
3848 // the commit SHAs are different, then we try again to get a different color.
3849 match *last_used_color {
3850 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
3851 let index: u32 = blame_entry.sha.into();
3852 sha_color = cx.theme().players().color_for_participant(index + 1);
3853 }
3854 _ => {}
3855 };
3856 last_used_color.replace((sha_color, blame_entry.sha));
3857
3858 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry, cx);
3859
3860 let short_commit_id = blame_entry.sha.display_short();
3861
3862 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
3863 let name = util::truncate_and_trailoff(author_name, 20);
3864
3865 let details = blame.read(cx).details_for_entry(&blame_entry);
3866
3867 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
3868
3869 let tooltip = cx.new_view(|_| {
3870 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
3871 });
3872
3873 h_flex()
3874 .w_full()
3875 .font_family(style.text.font().family)
3876 .line_height(style.text.line_height)
3877 .id(("blame", ix))
3878 .children([
3879 div()
3880 .text_color(sha_color.cursor)
3881 .child(short_commit_id)
3882 .mr_2(),
3883 div()
3884 .w_full()
3885 .h_flex()
3886 .justify_between()
3887 .text_color(cx.theme().status().hint)
3888 .child(name)
3889 .child(relative_timestamp),
3890 ])
3891 .on_mouse_down(MouseButton::Right, {
3892 let blame_entry = blame_entry.clone();
3893 let details = details.clone();
3894 move |event, cx| {
3895 deploy_blame_entry_context_menu(
3896 &blame_entry,
3897 details.as_ref(),
3898 editor.clone(),
3899 event.position,
3900 cx,
3901 );
3902 }
3903 })
3904 .hover(|style| style.bg(cx.theme().colors().element_hover))
3905 .when_some(
3906 details.and_then(|details| details.permalink),
3907 |this, url| {
3908 let url = url.clone();
3909 this.cursor_pointer().on_click(move |_, cx| {
3910 cx.stop_propagation();
3911 cx.open_url(url.as_str())
3912 })
3913 },
3914 )
3915 .hoverable_tooltip(move |_| tooltip.clone().into())
3916 .into_any()
3917}
3918
3919fn deploy_blame_entry_context_menu(
3920 blame_entry: &BlameEntry,
3921 details: Option<&CommitDetails>,
3922 editor: View<Editor>,
3923 position: gpui::Point<Pixels>,
3924 cx: &mut WindowContext<'_>,
3925) {
3926 let context_menu = ContextMenu::build(cx, move |this, _| {
3927 let sha = format!("{}", blame_entry.sha);
3928 this.entry("Copy commit SHA", None, move |cx| {
3929 cx.write_to_clipboard(ClipboardItem::new(sha.clone()));
3930 })
3931 .when_some(
3932 details.and_then(|details| details.permalink.clone()),
3933 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
3934 )
3935 });
3936
3937 editor.update(cx, move |editor, cx| {
3938 editor.mouse_context_menu = Some(MouseContextMenu::new(position, context_menu, cx));
3939 cx.notify();
3940 });
3941}
3942
3943#[derive(Debug)]
3944pub(crate) struct LineWithInvisibles {
3945 fragments: SmallVec<[LineFragment; 1]>,
3946 invisibles: Vec<Invisible>,
3947 len: usize,
3948 width: Pixels,
3949 font_size: Pixels,
3950}
3951
3952#[allow(clippy::large_enum_variant)]
3953enum LineFragment {
3954 Text(ShapedLine),
3955 Element {
3956 element: Option<AnyElement>,
3957 size: Size<Pixels>,
3958 len: usize,
3959 },
3960}
3961
3962impl fmt::Debug for LineFragment {
3963 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
3964 match self {
3965 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
3966 LineFragment::Element { size, len, .. } => f
3967 .debug_struct("Element")
3968 .field("size", size)
3969 .field("len", len)
3970 .finish(),
3971 }
3972 }
3973}
3974
3975impl LineWithInvisibles {
3976 fn from_chunks<'a>(
3977 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
3978 text_style: &TextStyle,
3979 max_line_len: usize,
3980 max_line_count: usize,
3981 line_number_layouts: &[Option<ShapedLine>],
3982 editor_mode: EditorMode,
3983 cx: &mut WindowContext,
3984 ) -> Vec<Self> {
3985 let mut layouts = Vec::with_capacity(max_line_count);
3986 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
3987 let mut line = String::new();
3988 let mut invisibles = Vec::new();
3989 let mut width = Pixels::ZERO;
3990 let mut len = 0;
3991 let mut styles = Vec::new();
3992 let mut non_whitespace_added = false;
3993 let mut row = 0;
3994 let mut line_exceeded_max_len = false;
3995 let font_size = text_style.font_size.to_pixels(cx.rem_size());
3996
3997 let ellipsis = SharedString::from("⋯");
3998
3999 for highlighted_chunk in chunks.chain([HighlightedChunk {
4000 text: "\n",
4001 style: None,
4002 is_tab: false,
4003 renderer: None,
4004 }]) {
4005 if let Some(renderer) = highlighted_chunk.renderer {
4006 if !line.is_empty() {
4007 let shaped_line = cx
4008 .text_system()
4009 .shape_line(line.clone().into(), font_size, &styles)
4010 .unwrap();
4011 width += shaped_line.width;
4012 len += shaped_line.len;
4013 fragments.push(LineFragment::Text(shaped_line));
4014 line.clear();
4015 styles.clear();
4016 }
4017
4018 let available_width = if renderer.constrain_width {
4019 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
4020 ellipsis.clone()
4021 } else {
4022 SharedString::from(Arc::from(highlighted_chunk.text))
4023 };
4024 let shaped_line = cx
4025 .text_system()
4026 .shape_line(
4027 chunk,
4028 font_size,
4029 &[text_style.to_run(highlighted_chunk.text.len())],
4030 )
4031 .unwrap();
4032 AvailableSpace::Definite(shaped_line.width)
4033 } else {
4034 AvailableSpace::MinContent
4035 };
4036
4037 let mut element = (renderer.render)(cx);
4038 let line_height = text_style.line_height_in_pixels(cx.rem_size());
4039 let size = element.layout_as_root(
4040 size(available_width, AvailableSpace::Definite(line_height)),
4041 cx,
4042 );
4043
4044 width += size.width;
4045 len += highlighted_chunk.text.len();
4046 fragments.push(LineFragment::Element {
4047 element: Some(element),
4048 size,
4049 len: highlighted_chunk.text.len(),
4050 });
4051 } else {
4052 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
4053 if ix > 0 {
4054 let shaped_line = cx
4055 .text_system()
4056 .shape_line(line.clone().into(), font_size, &styles)
4057 .unwrap();
4058 width += shaped_line.width;
4059 len += shaped_line.len;
4060 fragments.push(LineFragment::Text(shaped_line));
4061 layouts.push(Self {
4062 width: mem::take(&mut width),
4063 len: mem::take(&mut len),
4064 fragments: mem::take(&mut fragments),
4065 invisibles: std::mem::take(&mut invisibles),
4066 font_size,
4067 });
4068
4069 line.clear();
4070 styles.clear();
4071 row += 1;
4072 line_exceeded_max_len = false;
4073 non_whitespace_added = false;
4074 if row == max_line_count {
4075 return layouts;
4076 }
4077 }
4078
4079 if !line_chunk.is_empty() && !line_exceeded_max_len {
4080 let text_style = if let Some(style) = highlighted_chunk.style {
4081 Cow::Owned(text_style.clone().highlight(style))
4082 } else {
4083 Cow::Borrowed(text_style)
4084 };
4085
4086 if line.len() + line_chunk.len() > max_line_len {
4087 let mut chunk_len = max_line_len - line.len();
4088 while !line_chunk.is_char_boundary(chunk_len) {
4089 chunk_len -= 1;
4090 }
4091 line_chunk = &line_chunk[..chunk_len];
4092 line_exceeded_max_len = true;
4093 }
4094
4095 styles.push(TextRun {
4096 len: line_chunk.len(),
4097 font: text_style.font(),
4098 color: text_style.color,
4099 background_color: text_style.background_color,
4100 underline: text_style.underline,
4101 strikethrough: text_style.strikethrough,
4102 });
4103
4104 if editor_mode == EditorMode::Full {
4105 // Line wrap pads its contents with fake whitespaces,
4106 // avoid printing them
4107 let inside_wrapped_string = line_number_layouts
4108 .get(row)
4109 .and_then(|layout| layout.as_ref())
4110 .is_none();
4111 if highlighted_chunk.is_tab {
4112 if non_whitespace_added || !inside_wrapped_string {
4113 invisibles.push(Invisible::Tab {
4114 line_start_offset: line.len(),
4115 line_end_offset: line.len() + line_chunk.len(),
4116 });
4117 }
4118 } else {
4119 invisibles.extend(
4120 line_chunk
4121 .bytes()
4122 .enumerate()
4123 .filter(|(_, line_byte)| {
4124 let is_whitespace =
4125 (*line_byte as char).is_whitespace();
4126 non_whitespace_added |= !is_whitespace;
4127 is_whitespace
4128 && (non_whitespace_added || !inside_wrapped_string)
4129 })
4130 .map(|(whitespace_index, _)| Invisible::Whitespace {
4131 line_offset: line.len() + whitespace_index,
4132 }),
4133 )
4134 }
4135 }
4136
4137 line.push_str(line_chunk);
4138 }
4139 }
4140 }
4141 }
4142
4143 layouts
4144 }
4145
4146 fn prepaint(
4147 &mut self,
4148 line_height: Pixels,
4149 scroll_pixel_position: gpui::Point<Pixels>,
4150 row: DisplayRow,
4151 content_origin: gpui::Point<Pixels>,
4152 line_elements: &mut SmallVec<[AnyElement; 1]>,
4153 cx: &mut WindowContext,
4154 ) {
4155 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
4156 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
4157 for fragment in &mut self.fragments {
4158 match fragment {
4159 LineFragment::Text(line) => {
4160 fragment_origin.x += line.width;
4161 }
4162 LineFragment::Element { element, size, .. } => {
4163 let mut element = element
4164 .take()
4165 .expect("you can't prepaint LineWithInvisibles twice");
4166
4167 // Center the element vertically within the line.
4168 let mut element_origin = fragment_origin;
4169 element_origin.y += (line_height - size.height) / 2.;
4170 element.prepaint_at(element_origin, cx);
4171 line_elements.push(element);
4172
4173 fragment_origin.x += size.width;
4174 }
4175 }
4176 }
4177 }
4178
4179 fn draw(
4180 &self,
4181 layout: &EditorLayout,
4182 row: DisplayRow,
4183 content_origin: gpui::Point<Pixels>,
4184 whitespace_setting: ShowWhitespaceSetting,
4185 selection_ranges: &[Range<DisplayPoint>],
4186 cx: &mut WindowContext,
4187 ) {
4188 let line_height = layout.position_map.line_height;
4189 let line_y = line_height
4190 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
4191
4192 let mut fragment_origin =
4193 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
4194
4195 for fragment in &self.fragments {
4196 match fragment {
4197 LineFragment::Text(line) => {
4198 line.paint(fragment_origin, line_height, cx).log_err();
4199 fragment_origin.x += line.width;
4200 }
4201 LineFragment::Element { size, .. } => {
4202 fragment_origin.x += size.width;
4203 }
4204 }
4205 }
4206
4207 self.draw_invisibles(
4208 &selection_ranges,
4209 layout,
4210 content_origin,
4211 line_y,
4212 row,
4213 line_height,
4214 whitespace_setting,
4215 cx,
4216 );
4217 }
4218
4219 #[allow(clippy::too_many_arguments)]
4220 fn draw_invisibles(
4221 &self,
4222 selection_ranges: &[Range<DisplayPoint>],
4223 layout: &EditorLayout,
4224 content_origin: gpui::Point<Pixels>,
4225 line_y: Pixels,
4226 row: DisplayRow,
4227 line_height: Pixels,
4228 whitespace_setting: ShowWhitespaceSetting,
4229 cx: &mut WindowContext,
4230 ) {
4231 let extract_whitespace_info = |invisible: &Invisible| {
4232 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
4233 Invisible::Tab {
4234 line_start_offset,
4235 line_end_offset,
4236 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
4237 Invisible::Whitespace { line_offset } => {
4238 (*line_offset, line_offset + 1, &layout.space_invisible)
4239 }
4240 };
4241
4242 let x_offset = self.x_for_index(token_offset);
4243 let invisible_offset =
4244 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
4245 let origin = content_origin
4246 + gpui::point(
4247 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
4248 line_y,
4249 );
4250
4251 (
4252 [token_offset, token_end_offset],
4253 Box::new(move |cx: &mut WindowContext| {
4254 invisible_symbol.paint(origin, line_height, cx).log_err();
4255 }),
4256 )
4257 };
4258
4259 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
4260 match whitespace_setting {
4261 ShowWhitespaceSetting::None => return,
4262 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
4263 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
4264 let invisible_point = DisplayPoint::new(row, start as u32);
4265 if !selection_ranges
4266 .iter()
4267 .any(|region| region.start <= invisible_point && invisible_point < region.end)
4268 {
4269 return;
4270 }
4271
4272 paint(cx);
4273 }),
4274
4275 // For a whitespace to be on a boundary, any of the following conditions need to be met:
4276 // - It is a tab
4277 // - It is adjacent to an edge (start or end)
4278 // - It is adjacent to a whitespace (left or right)
4279 ShowWhitespaceSetting::Boundary => {
4280 // 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
4281 // the above cases.
4282 // Note: We zip in the original `invisibles` to check for tab equality
4283 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
4284 for (([start, end], paint), invisible) in
4285 invisible_iter.zip_eq(self.invisibles.iter())
4286 {
4287 let should_render = match (&last_seen, invisible) {
4288 (_, Invisible::Tab { .. }) => true,
4289 (Some((_, last_end, _)), _) => *last_end == start,
4290 _ => false,
4291 };
4292
4293 if should_render || start == 0 || end == self.len {
4294 paint(cx);
4295
4296 // Since we are scanning from the left, we will skip over the first available whitespace that is part
4297 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
4298 if let Some((should_render_last, last_end, paint_last)) = last_seen {
4299 // Note that we need to make sure that the last one is actually adjacent
4300 if !should_render_last && last_end == start {
4301 paint_last(cx);
4302 }
4303 }
4304 }
4305
4306 // Manually render anything within a selection
4307 let invisible_point = DisplayPoint::new(row, start as u32);
4308 if selection_ranges.iter().any(|region| {
4309 region.start <= invisible_point && invisible_point < region.end
4310 }) {
4311 paint(cx);
4312 }
4313
4314 last_seen = Some((should_render, end, paint));
4315 }
4316 }
4317 };
4318 }
4319
4320 pub fn x_for_index(&self, index: usize) -> Pixels {
4321 let mut fragment_start_x = Pixels::ZERO;
4322 let mut fragment_start_index = 0;
4323
4324 for fragment in &self.fragments {
4325 match fragment {
4326 LineFragment::Text(shaped_line) => {
4327 let fragment_end_index = fragment_start_index + shaped_line.len;
4328 if index < fragment_end_index {
4329 return fragment_start_x
4330 + shaped_line.x_for_index(index - fragment_start_index);
4331 }
4332 fragment_start_x += shaped_line.width;
4333 fragment_start_index = fragment_end_index;
4334 }
4335 LineFragment::Element { len, size, .. } => {
4336 let fragment_end_index = fragment_start_index + len;
4337 if index < fragment_end_index {
4338 return fragment_start_x;
4339 }
4340 fragment_start_x += size.width;
4341 fragment_start_index = fragment_end_index;
4342 }
4343 }
4344 }
4345
4346 fragment_start_x
4347 }
4348
4349 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
4350 let mut fragment_start_x = Pixels::ZERO;
4351 let mut fragment_start_index = 0;
4352
4353 for fragment in &self.fragments {
4354 match fragment {
4355 LineFragment::Text(shaped_line) => {
4356 let fragment_end_x = fragment_start_x + shaped_line.width;
4357 if x < fragment_end_x {
4358 return Some(
4359 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
4360 );
4361 }
4362 fragment_start_x = fragment_end_x;
4363 fragment_start_index += shaped_line.len;
4364 }
4365 LineFragment::Element { len, size, .. } => {
4366 let fragment_end_x = fragment_start_x + size.width;
4367 if x < fragment_end_x {
4368 return Some(fragment_start_index);
4369 }
4370 fragment_start_index += len;
4371 fragment_start_x = fragment_end_x;
4372 }
4373 }
4374 }
4375
4376 None
4377 }
4378
4379 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
4380 let mut fragment_start_index = 0;
4381
4382 for fragment in &self.fragments {
4383 match fragment {
4384 LineFragment::Text(shaped_line) => {
4385 let fragment_end_index = fragment_start_index + shaped_line.len;
4386 if index < fragment_end_index {
4387 return shaped_line.font_id_for_index(index - fragment_start_index);
4388 }
4389 fragment_start_index = fragment_end_index;
4390 }
4391 LineFragment::Element { len, .. } => {
4392 let fragment_end_index = fragment_start_index + len;
4393 if index < fragment_end_index {
4394 return None;
4395 }
4396 fragment_start_index = fragment_end_index;
4397 }
4398 }
4399 }
4400
4401 None
4402 }
4403}
4404
4405#[derive(Debug, Clone, Copy, PartialEq, Eq)]
4406enum Invisible {
4407 /// A tab character
4408 ///
4409 /// A tab character is internally represented by spaces (configured by the user's tab width)
4410 /// aligned to the nearest column, so it's necessary to store the start and end offset for
4411 /// adjacency checks.
4412 Tab {
4413 line_start_offset: usize,
4414 line_end_offset: usize,
4415 },
4416 Whitespace {
4417 line_offset: usize,
4418 },
4419}
4420
4421impl EditorElement {
4422 /// Returns the rem size to use when rendering the [`EditorElement`].
4423 ///
4424 /// This allows UI elements to scale based on the `buffer_font_size`.
4425 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
4426 match self.editor.read(cx).mode {
4427 EditorMode::Full => {
4428 let buffer_font_size = self.style.text.font_size;
4429 match buffer_font_size {
4430 AbsoluteLength::Pixels(pixels) => {
4431 let rem_size_scale = {
4432 // Our default UI font size is 14px on a 16px base scale.
4433 // This means the default UI font size is 0.875rems.
4434 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
4435
4436 // We then determine the delta between a single rem and the default font
4437 // size scale.
4438 let default_font_size_delta = 1. - default_font_size_scale;
4439
4440 // Finally, we add this delta to 1rem to get the scale factor that
4441 // should be used to scale up the UI.
4442 1. + default_font_size_delta
4443 };
4444
4445 Some(pixels * rem_size_scale)
4446 }
4447 AbsoluteLength::Rems(rems) => {
4448 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
4449 }
4450 }
4451 }
4452 // We currently use single-line and auto-height editors in UI contexts,
4453 // so we don't want to scale everything with the buffer font size, as it
4454 // ends up looking off.
4455 EditorMode::SingleLine | EditorMode::AutoHeight { .. } => None,
4456 }
4457 }
4458}
4459
4460impl Element for EditorElement {
4461 type RequestLayoutState = ();
4462 type PrepaintState = EditorLayout;
4463
4464 fn id(&self) -> Option<ElementId> {
4465 None
4466 }
4467
4468 fn request_layout(
4469 &mut self,
4470 _: Option<&GlobalElementId>,
4471 cx: &mut WindowContext,
4472 ) -> (gpui::LayoutId, ()) {
4473 let rem_size = self.rem_size(cx);
4474 cx.with_rem_size(rem_size, |cx| {
4475 self.editor.update(cx, |editor, cx| {
4476 editor.set_style(self.style.clone(), cx);
4477
4478 let layout_id = match editor.mode {
4479 EditorMode::SingleLine => {
4480 let rem_size = cx.rem_size();
4481 let mut style = Style::default();
4482 style.size.width = relative(1.).into();
4483 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
4484 cx.request_layout(style, None)
4485 }
4486 EditorMode::AutoHeight { max_lines } => {
4487 let editor_handle = cx.view().clone();
4488 let max_line_number_width =
4489 self.max_line_number_width(&editor.snapshot(cx), cx);
4490 cx.request_measured_layout(
4491 Style::default(),
4492 move |known_dimensions, available_space, cx| {
4493 editor_handle
4494 .update(cx, |editor, cx| {
4495 compute_auto_height_layout(
4496 editor,
4497 max_lines,
4498 max_line_number_width,
4499 known_dimensions,
4500 available_space.width,
4501 cx,
4502 )
4503 })
4504 .unwrap_or_default()
4505 },
4506 )
4507 }
4508 EditorMode::Full => {
4509 let mut style = Style::default();
4510 style.size.width = relative(1.).into();
4511 style.size.height = relative(1.).into();
4512 cx.request_layout(style, None)
4513 }
4514 };
4515
4516 (layout_id, ())
4517 })
4518 })
4519 }
4520
4521 fn prepaint(
4522 &mut self,
4523 _: Option<&GlobalElementId>,
4524 bounds: Bounds<Pixels>,
4525 _: &mut Self::RequestLayoutState,
4526 cx: &mut WindowContext,
4527 ) -> Self::PrepaintState {
4528 let text_style = TextStyleRefinement {
4529 font_size: Some(self.style.text.font_size),
4530 line_height: Some(self.style.text.line_height),
4531 ..Default::default()
4532 };
4533 cx.set_view_id(self.editor.entity_id());
4534
4535 let rem_size = self.rem_size(cx);
4536 cx.with_rem_size(rem_size, |cx| {
4537 cx.with_text_style(Some(text_style), |cx| {
4538 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
4539 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
4540 let style = self.style.clone();
4541
4542 let font_id = cx.text_system().resolve_font(&style.text.font());
4543 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4544 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4545 let em_width = cx
4546 .text_system()
4547 .typographic_bounds(font_id, font_size, 'm')
4548 .unwrap()
4549 .size
4550 .width;
4551 let em_advance = cx
4552 .text_system()
4553 .advance(font_id, font_size, 'm')
4554 .unwrap()
4555 .width;
4556
4557 let gutter_dimensions = snapshot.gutter_dimensions(
4558 font_id,
4559 font_size,
4560 em_width,
4561 self.max_line_number_width(&snapshot, cx),
4562 cx,
4563 );
4564 let text_width = bounds.size.width - gutter_dimensions.width;
4565
4566 let right_margin = if snapshot.mode == EditorMode::Full {
4567 EditorElement::SCROLLBAR_WIDTH
4568 } else {
4569 px(0.)
4570 };
4571 let overscroll = size(em_width + right_margin, px(0.));
4572
4573 snapshot = self.editor.update(cx, |editor, cx| {
4574 editor.last_bounds = Some(bounds);
4575 editor.gutter_dimensions = gutter_dimensions;
4576 editor.set_visible_line_count(bounds.size.height / line_height, cx);
4577
4578 let editor_width =
4579 text_width - gutter_dimensions.margin - overscroll.width - em_width;
4580 let wrap_width = match editor.soft_wrap_mode(cx) {
4581 SoftWrap::None => None,
4582 SoftWrap::PreferLine => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
4583 SoftWrap::EditorWidth => Some(editor_width),
4584 SoftWrap::Column(column) => {
4585 Some(editor_width.min(column as f32 * em_advance))
4586 }
4587 };
4588
4589 if editor.set_wrap_width(wrap_width, cx) {
4590 editor.snapshot(cx)
4591 } else {
4592 snapshot
4593 }
4594 });
4595
4596 let wrap_guides = self
4597 .editor
4598 .read(cx)
4599 .wrap_guides(cx)
4600 .iter()
4601 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
4602 .collect::<SmallVec<[_; 2]>>();
4603
4604 let hitbox = cx.insert_hitbox(bounds, false);
4605 let gutter_hitbox = cx.insert_hitbox(
4606 Bounds {
4607 origin: bounds.origin,
4608 size: size(gutter_dimensions.width, bounds.size.height),
4609 },
4610 false,
4611 );
4612 let text_hitbox = cx.insert_hitbox(
4613 Bounds {
4614 origin: gutter_hitbox.upper_right(),
4615 size: size(text_width, bounds.size.height),
4616 },
4617 false,
4618 );
4619 // Offset the content_bounds from the text_bounds by the gutter margin (which
4620 // is roughly half a character wide) to make hit testing work more like how we want.
4621 let content_origin =
4622 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
4623
4624 let mut autoscroll_containing_element = false;
4625 let mut autoscroll_horizontally = false;
4626 self.editor.update(cx, |editor, cx| {
4627 autoscroll_containing_element =
4628 editor.autoscroll_requested() || editor.has_pending_selection();
4629 autoscroll_horizontally =
4630 editor.autoscroll_vertically(bounds, line_height, cx);
4631 snapshot = editor.snapshot(cx);
4632 });
4633
4634 let mut scroll_position = snapshot.scroll_position();
4635 // The scroll position is a fractional point, the whole number of which represents
4636 // the top of the window in terms of display rows.
4637 let start_row = DisplayRow(scroll_position.y as u32);
4638 let height_in_lines = bounds.size.height / line_height;
4639 let max_row = snapshot.max_point().row();
4640 let end_row = cmp::min(
4641 (scroll_position.y + height_in_lines).ceil() as u32,
4642 max_row.next_row().0,
4643 );
4644 let end_row = DisplayRow(end_row);
4645
4646 let buffer_rows = snapshot
4647 .buffer_rows(start_row)
4648 .take((start_row..end_row).len())
4649 .collect::<Vec<_>>();
4650
4651 let start_anchor = if start_row == Default::default() {
4652 Anchor::min()
4653 } else {
4654 snapshot.buffer_snapshot.anchor_before(
4655 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
4656 )
4657 };
4658 let end_anchor = if end_row > max_row {
4659 Anchor::max()
4660 } else {
4661 snapshot.buffer_snapshot.anchor_before(
4662 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
4663 )
4664 };
4665
4666 let highlighted_rows = self
4667 .editor
4668 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
4669 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
4670 start_anchor..end_anchor,
4671 &snapshot.display_snapshot,
4672 cx.theme().colors(),
4673 );
4674 let highlighted_gutter_ranges =
4675 self.editor.read(cx).gutter_highlights_in_range(
4676 start_anchor..end_anchor,
4677 &snapshot.display_snapshot,
4678 cx,
4679 );
4680
4681 let redacted_ranges = self.editor.read(cx).redacted_ranges(
4682 start_anchor..end_anchor,
4683 &snapshot.display_snapshot,
4684 cx,
4685 );
4686
4687 let (selections, active_rows, newest_selection_head) = self.layout_selections(
4688 start_anchor,
4689 end_anchor,
4690 &snapshot,
4691 start_row,
4692 end_row,
4693 cx,
4694 );
4695
4696 let line_numbers = self.layout_line_numbers(
4697 start_row..end_row,
4698 buffer_rows.iter().copied(),
4699 &active_rows,
4700 newest_selection_head,
4701 &snapshot,
4702 cx,
4703 );
4704
4705 let mut gutter_fold_toggles =
4706 cx.with_element_namespace("gutter_fold_toggles", |cx| {
4707 self.layout_gutter_fold_toggles(
4708 start_row..end_row,
4709 buffer_rows.iter().copied(),
4710 &active_rows,
4711 &snapshot,
4712 cx,
4713 )
4714 });
4715 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
4716 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
4717 });
4718
4719 let display_hunks = self.layout_git_gutters(
4720 line_height,
4721 &gutter_hitbox,
4722 start_row..end_row,
4723 &snapshot,
4724 cx,
4725 );
4726
4727 let mut max_visible_line_width = Pixels::ZERO;
4728 let mut line_layouts =
4729 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
4730 for line_with_invisibles in &line_layouts {
4731 if line_with_invisibles.width > max_visible_line_width {
4732 max_visible_line_width = line_with_invisibles.width;
4733 }
4734 }
4735
4736 let longest_line_width =
4737 layout_line(snapshot.longest_row(), &snapshot, &style, cx).width;
4738 let mut scroll_width =
4739 longest_line_width.max(max_visible_line_width) + overscroll.width;
4740
4741 let mut blocks = cx.with_element_namespace("blocks", |cx| {
4742 self.build_blocks(
4743 start_row..end_row,
4744 &snapshot,
4745 &hitbox,
4746 &text_hitbox,
4747 &mut scroll_width,
4748 &gutter_dimensions,
4749 em_width,
4750 gutter_dimensions.full_width(),
4751 line_height,
4752 &line_layouts,
4753 cx,
4754 )
4755 });
4756
4757 let scroll_pixel_position = point(
4758 scroll_position.x * em_width,
4759 scroll_position.y * line_height,
4760 );
4761
4762 let start_buffer_row =
4763 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
4764 let end_buffer_row =
4765 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
4766
4767 let indent_guides = self.layout_indent_guides(
4768 content_origin,
4769 text_hitbox.origin,
4770 start_buffer_row..end_buffer_row,
4771 scroll_pixel_position,
4772 line_height,
4773 &snapshot,
4774 cx,
4775 );
4776
4777 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
4778 self.prepaint_crease_trailers(
4779 crease_trailers,
4780 &line_layouts,
4781 line_height,
4782 content_origin,
4783 scroll_pixel_position,
4784 em_width,
4785 cx,
4786 )
4787 });
4788
4789 let mut inline_blame = None;
4790 if let Some(newest_selection_head) = newest_selection_head {
4791 let display_row = newest_selection_head.row();
4792 if (start_row..end_row).contains(&display_row) {
4793 let line_ix = display_row.minus(start_row) as usize;
4794 let line_layout = &line_layouts[line_ix];
4795 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
4796 inline_blame = self.layout_inline_blame(
4797 display_row,
4798 &snapshot.display_snapshot,
4799 line_layout,
4800 crease_trailer_layout,
4801 em_width,
4802 content_origin,
4803 scroll_pixel_position,
4804 line_height,
4805 cx,
4806 );
4807 }
4808 }
4809
4810 let blamed_display_rows = self.layout_blame_entries(
4811 buffer_rows.into_iter(),
4812 em_width,
4813 scroll_position,
4814 line_height,
4815 &gutter_hitbox,
4816 gutter_dimensions.git_blame_entries_width,
4817 cx,
4818 );
4819
4820 let settings = EditorSettings::get_global(cx);
4821 let scroll_max_row = max_row.as_f32();
4822 let scroll_max_row = match settings.scroll_beyond_last_line {
4823 ScrollBeyondLastLine::OnePage => scroll_max_row,
4824 ScrollBeyondLastLine::Off => {
4825 (scroll_max_row - height_in_lines + 1.0).max(0.0)
4826 }
4827 ScrollBeyondLastLine::VerticalScrollMargin => (scroll_max_row
4828 - height_in_lines
4829 + 1.0
4830 + settings.vertical_scroll_margin)
4831 .max(0.0),
4832 };
4833 let scroll_max = point(
4834 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
4835 scroll_max_row,
4836 );
4837
4838 self.editor.update(cx, |editor, cx| {
4839 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
4840
4841 let autoscrolled = if autoscroll_horizontally {
4842 editor.autoscroll_horizontally(
4843 start_row,
4844 text_hitbox.size.width,
4845 scroll_width,
4846 em_width,
4847 &line_layouts,
4848 cx,
4849 )
4850 } else {
4851 false
4852 };
4853
4854 if clamped || autoscrolled {
4855 snapshot = editor.snapshot(cx);
4856 scroll_position = snapshot.scroll_position();
4857 }
4858 });
4859
4860 let line_elements = self.prepaint_lines(
4861 start_row,
4862 &mut line_layouts,
4863 line_height,
4864 scroll_pixel_position,
4865 content_origin,
4866 cx,
4867 );
4868
4869 cx.with_element_namespace("blocks", |cx| {
4870 self.layout_blocks(
4871 &mut blocks,
4872 &hitbox,
4873 line_height,
4874 scroll_pixel_position,
4875 cx,
4876 );
4877 });
4878
4879 let cursors = self.collect_cursors(&snapshot, cx);
4880 let visible_row_range = start_row..end_row;
4881 let non_visible_cursors = cursors
4882 .iter()
4883 .any(move |c| !visible_row_range.contains(&c.0.row()));
4884
4885 let visible_cursors = self.layout_visible_cursors(
4886 &snapshot,
4887 &selections,
4888 start_row..end_row,
4889 &line_layouts,
4890 &text_hitbox,
4891 content_origin,
4892 scroll_position,
4893 scroll_pixel_position,
4894 line_height,
4895 em_width,
4896 autoscroll_containing_element,
4897 cx,
4898 );
4899
4900 let scrollbar_layout = self.layout_scrollbar(
4901 &snapshot,
4902 bounds,
4903 scroll_position,
4904 height_in_lines,
4905 non_visible_cursors,
4906 cx,
4907 );
4908
4909 let gutter_settings = EditorSettings::get_global(cx).gutter;
4910
4911 let mut _context_menu_visible = false;
4912 let mut code_actions_indicator = None;
4913 if let Some(newest_selection_head) = newest_selection_head {
4914 if (start_row..end_row).contains(&newest_selection_head.row()) {
4915 _context_menu_visible = self.layout_context_menu(
4916 line_height,
4917 &hitbox,
4918 &text_hitbox,
4919 content_origin,
4920 start_row,
4921 scroll_pixel_position,
4922 &line_layouts,
4923 newest_selection_head,
4924 gutter_dimensions.width - gutter_dimensions.left_padding,
4925 cx,
4926 );
4927
4928 let show_code_actions = snapshot
4929 .show_code_actions
4930 .unwrap_or_else(|| gutter_settings.code_actions);
4931 if show_code_actions {
4932 let newest_selection_point =
4933 newest_selection_head.to_point(&snapshot.display_snapshot);
4934 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
4935 MultiBufferRow(newest_selection_point.row),
4936 );
4937 if let Some((buffer, range)) = buffer {
4938 let buffer_id = buffer.remote_id();
4939 let row = range.start.row;
4940 let has_test_indicator =
4941 self.editor.read(cx).tasks.contains_key(&(buffer_id, row));
4942
4943 if !has_test_indicator {
4944 code_actions_indicator = self
4945 .layout_code_actions_indicator(
4946 line_height,
4947 newest_selection_head,
4948 scroll_pixel_position,
4949 &gutter_dimensions,
4950 &gutter_hitbox,
4951 cx,
4952 );
4953 }
4954 }
4955 }
4956 }
4957 }
4958
4959 let test_indicators = if gutter_settings.runnables {
4960 self.layout_run_indicators(
4961 line_height,
4962 scroll_pixel_position,
4963 &gutter_dimensions,
4964 &gutter_hitbox,
4965 &snapshot,
4966 cx,
4967 )
4968 } else {
4969 vec![]
4970 };
4971
4972 if !cx.has_active_drag() {
4973 self.layout_hover_popovers(
4974 &snapshot,
4975 &hitbox,
4976 &text_hitbox,
4977 start_row..end_row,
4978 content_origin,
4979 scroll_pixel_position,
4980 &line_layouts,
4981 line_height,
4982 em_width,
4983 cx,
4984 );
4985 }
4986
4987 let mouse_context_menu = self.layout_mouse_context_menu(cx);
4988
4989 cx.with_element_namespace("gutter_fold_toggles", |cx| {
4990 self.prepaint_gutter_fold_toggles(
4991 &mut gutter_fold_toggles,
4992 line_height,
4993 &gutter_dimensions,
4994 gutter_settings,
4995 scroll_pixel_position,
4996 &gutter_hitbox,
4997 cx,
4998 )
4999 });
5000
5001 let invisible_symbol_font_size = font_size / 2.;
5002 let tab_invisible = cx
5003 .text_system()
5004 .shape_line(
5005 "→".into(),
5006 invisible_symbol_font_size,
5007 &[TextRun {
5008 len: "→".len(),
5009 font: self.style.text.font(),
5010 color: cx.theme().colors().editor_invisible,
5011 background_color: None,
5012 underline: None,
5013 strikethrough: None,
5014 }],
5015 )
5016 .unwrap();
5017 let space_invisible = cx
5018 .text_system()
5019 .shape_line(
5020 "•".into(),
5021 invisible_symbol_font_size,
5022 &[TextRun {
5023 len: "•".len(),
5024 font: self.style.text.font(),
5025 color: cx.theme().colors().editor_invisible,
5026 background_color: None,
5027 underline: None,
5028 strikethrough: None,
5029 }],
5030 )
5031 .unwrap();
5032
5033 EditorLayout {
5034 mode: snapshot.mode,
5035 position_map: Arc::new(PositionMap {
5036 size: bounds.size,
5037 scroll_pixel_position,
5038 scroll_max,
5039 line_layouts,
5040 line_height,
5041 em_width,
5042 em_advance,
5043 snapshot,
5044 }),
5045 visible_display_row_range: start_row..end_row,
5046 wrap_guides,
5047 indent_guides,
5048 hitbox,
5049 text_hitbox,
5050 gutter_hitbox,
5051 gutter_dimensions,
5052 content_origin,
5053 scrollbar_layout,
5054 active_rows,
5055 highlighted_rows,
5056 highlighted_ranges,
5057 highlighted_gutter_ranges,
5058 redacted_ranges,
5059 line_elements,
5060 line_numbers,
5061 display_hunks,
5062 blamed_display_rows,
5063 inline_blame,
5064 blocks,
5065 cursors,
5066 visible_cursors,
5067 selections,
5068 mouse_context_menu,
5069 test_indicators,
5070 code_actions_indicator,
5071 gutter_fold_toggles,
5072 crease_trailers,
5073 tab_invisible,
5074 space_invisible,
5075 }
5076 })
5077 })
5078 })
5079 }
5080
5081 fn paint(
5082 &mut self,
5083 _: Option<&GlobalElementId>,
5084 bounds: Bounds<gpui::Pixels>,
5085 _: &mut Self::RequestLayoutState,
5086 layout: &mut Self::PrepaintState,
5087 cx: &mut WindowContext,
5088 ) {
5089 let focus_handle = self.editor.focus_handle(cx);
5090 let key_context = self.editor.read(cx).key_context(cx);
5091 cx.set_focus_handle(&focus_handle);
5092 cx.set_key_context(key_context);
5093 cx.handle_input(
5094 &focus_handle,
5095 ElementInputHandler::new(bounds, self.editor.clone()),
5096 );
5097 self.register_actions(cx);
5098 self.register_key_listeners(cx, layout);
5099
5100 let text_style = TextStyleRefinement {
5101 font_size: Some(self.style.text.font_size),
5102 line_height: Some(self.style.text.line_height),
5103 ..Default::default()
5104 };
5105 let mouse_position = cx.mouse_position();
5106 let hovered_hunk = layout
5107 .display_hunks
5108 .iter()
5109 .find_map(|(hunk, hunk_hitbox)| match hunk {
5110 DisplayDiffHunk::Folded { .. } => None,
5111 DisplayDiffHunk::Unfolded {
5112 diff_base_byte_range,
5113 multi_buffer_range,
5114 status,
5115 ..
5116 } => {
5117 if hunk_hitbox
5118 .as_ref()
5119 .map(|hitbox| hitbox.contains(&mouse_position))
5120 .unwrap_or(false)
5121 {
5122 Some(HunkToExpand {
5123 status: *status,
5124 multi_buffer_range: multi_buffer_range.clone(),
5125 diff_base_byte_range: diff_base_byte_range.clone(),
5126 })
5127 } else {
5128 None
5129 }
5130 }
5131 });
5132 let rem_size = self.rem_size(cx);
5133 cx.with_rem_size(rem_size, |cx| {
5134 cx.with_text_style(Some(text_style), |cx| {
5135 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
5136 self.paint_mouse_listeners(layout, hovered_hunk, cx);
5137 self.paint_background(layout, cx);
5138 self.paint_indent_guides(layout, cx);
5139
5140 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5141 self.paint_blamed_display_rows(layout, cx);
5142 self.paint_line_numbers(layout, cx);
5143 }
5144
5145 self.paint_text(layout, cx);
5146
5147 if !layout.blocks.is_empty() {
5148 cx.with_element_namespace("blocks", |cx| {
5149 self.paint_blocks(layout, cx);
5150 });
5151 }
5152
5153 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5154 self.paint_gutter_highlights(layout, cx);
5155 self.paint_gutter_indicators(layout, cx);
5156 }
5157
5158 self.paint_scrollbar(layout, cx);
5159 self.paint_mouse_context_menu(layout, cx);
5160 });
5161 })
5162 })
5163 }
5164}
5165
5166impl IntoElement for EditorElement {
5167 type Element = Self;
5168
5169 fn into_element(self) -> Self::Element {
5170 self
5171 }
5172}
5173
5174pub struct EditorLayout {
5175 position_map: Arc<PositionMap>,
5176 hitbox: Hitbox,
5177 text_hitbox: Hitbox,
5178 gutter_hitbox: Hitbox,
5179 gutter_dimensions: GutterDimensions,
5180 content_origin: gpui::Point<Pixels>,
5181 scrollbar_layout: Option<ScrollbarLayout>,
5182 mode: EditorMode,
5183 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
5184 indent_guides: Option<Vec<IndentGuideLayout>>,
5185 visible_display_row_range: Range<DisplayRow>,
5186 active_rows: BTreeMap<DisplayRow, bool>,
5187 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
5188 line_elements: SmallVec<[AnyElement; 1]>,
5189 line_numbers: Vec<Option<ShapedLine>>,
5190 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
5191 blamed_display_rows: Option<Vec<AnyElement>>,
5192 inline_blame: Option<AnyElement>,
5193 blocks: Vec<BlockLayout>,
5194 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5195 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5196 redacted_ranges: Vec<Range<DisplayPoint>>,
5197 cursors: Vec<(DisplayPoint, Hsla)>,
5198 visible_cursors: Vec<CursorLayout>,
5199 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
5200 code_actions_indicator: Option<AnyElement>,
5201 test_indicators: Vec<AnyElement>,
5202 gutter_fold_toggles: Vec<Option<AnyElement>>,
5203 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
5204 mouse_context_menu: Option<AnyElement>,
5205 tab_invisible: ShapedLine,
5206 space_invisible: ShapedLine,
5207}
5208
5209impl EditorLayout {
5210 fn line_end_overshoot(&self) -> Pixels {
5211 0.15 * self.position_map.line_height
5212 }
5213}
5214
5215struct ColoredRange<T> {
5216 start: T,
5217 end: T,
5218 color: Hsla,
5219}
5220
5221#[derive(Clone)]
5222struct ScrollbarLayout {
5223 hitbox: Hitbox,
5224 visible_row_range: Range<f32>,
5225 visible: bool,
5226 row_height: Pixels,
5227 thumb_height: Pixels,
5228}
5229
5230impl ScrollbarLayout {
5231 const BORDER_WIDTH: Pixels = px(1.0);
5232 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
5233 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
5234 const MIN_THUMB_HEIGHT: Pixels = px(20.0);
5235
5236 fn thumb_bounds(&self) -> Bounds<Pixels> {
5237 let thumb_top = self.y_for_row(self.visible_row_range.start);
5238 let thumb_bottom = thumb_top + self.thumb_height;
5239 Bounds::from_corners(
5240 point(self.hitbox.left(), thumb_top),
5241 point(self.hitbox.right(), thumb_bottom),
5242 )
5243 }
5244
5245 fn y_for_row(&self, row: f32) -> Pixels {
5246 self.hitbox.top() + row * self.row_height
5247 }
5248
5249 fn marker_quads_for_ranges(
5250 &self,
5251 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
5252 column: Option<usize>,
5253 ) -> Vec<PaintQuad> {
5254 struct MinMax {
5255 min: Pixels,
5256 max: Pixels,
5257 }
5258 let (x_range, height_limit) = if let Some(column) = column {
5259 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
5260 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
5261 let end = start + column_width;
5262 (
5263 Range { start, end },
5264 MinMax {
5265 min: Self::MIN_MARKER_HEIGHT,
5266 max: px(f32::MAX),
5267 },
5268 )
5269 } else {
5270 (
5271 Range {
5272 start: Self::BORDER_WIDTH,
5273 end: self.hitbox.size.width,
5274 },
5275 MinMax {
5276 min: Self::LINE_MARKER_HEIGHT,
5277 max: Self::LINE_MARKER_HEIGHT,
5278 },
5279 )
5280 };
5281
5282 let row_to_y = |row: DisplayRow| row.as_f32() * self.row_height;
5283 let mut pixel_ranges = row_ranges
5284 .into_iter()
5285 .map(|range| {
5286 let start_y = row_to_y(range.start);
5287 let end_y = row_to_y(range.end)
5288 + self.row_height.max(height_limit.min).min(height_limit.max);
5289 ColoredRange {
5290 start: start_y,
5291 end: end_y,
5292 color: range.color,
5293 }
5294 })
5295 .peekable();
5296
5297 let mut quads = Vec::new();
5298 while let Some(mut pixel_range) = pixel_ranges.next() {
5299 while let Some(next_pixel_range) = pixel_ranges.peek() {
5300 if pixel_range.end >= next_pixel_range.start - px(1.0)
5301 && pixel_range.color == next_pixel_range.color
5302 {
5303 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
5304 pixel_ranges.next();
5305 } else {
5306 break;
5307 }
5308 }
5309
5310 let bounds = Bounds::from_corners(
5311 point(x_range.start, pixel_range.start),
5312 point(x_range.end, pixel_range.end),
5313 );
5314 quads.push(quad(
5315 bounds,
5316 Corners::default(),
5317 pixel_range.color,
5318 Edges::default(),
5319 Hsla::transparent_black(),
5320 ));
5321 }
5322
5323 quads
5324 }
5325}
5326
5327struct CreaseTrailerLayout {
5328 element: AnyElement,
5329 bounds: Bounds<Pixels>,
5330}
5331
5332struct PositionMap {
5333 size: Size<Pixels>,
5334 line_height: Pixels,
5335 scroll_pixel_position: gpui::Point<Pixels>,
5336 scroll_max: gpui::Point<f32>,
5337 em_width: Pixels,
5338 em_advance: Pixels,
5339 line_layouts: Vec<LineWithInvisibles>,
5340 snapshot: EditorSnapshot,
5341}
5342
5343#[derive(Debug, Copy, Clone)]
5344pub struct PointForPosition {
5345 pub previous_valid: DisplayPoint,
5346 pub next_valid: DisplayPoint,
5347 pub exact_unclipped: DisplayPoint,
5348 pub column_overshoot_after_line_end: u32,
5349}
5350
5351impl PointForPosition {
5352 pub fn as_valid(&self) -> Option<DisplayPoint> {
5353 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
5354 Some(self.previous_valid)
5355 } else {
5356 None
5357 }
5358 }
5359}
5360
5361impl PositionMap {
5362 fn point_for_position(
5363 &self,
5364 text_bounds: Bounds<Pixels>,
5365 position: gpui::Point<Pixels>,
5366 ) -> PointForPosition {
5367 let scroll_position = self.snapshot.scroll_position();
5368 let position = position - text_bounds.origin;
5369 let y = position.y.max(px(0.)).min(self.size.height);
5370 let x = position.x + (scroll_position.x * self.em_width);
5371 let row = ((y / self.line_height) + scroll_position.y) as u32;
5372
5373 let (column, x_overshoot_after_line_end) = if let Some(line) = self
5374 .line_layouts
5375 .get(row as usize - scroll_position.y as usize)
5376 {
5377 if let Some(ix) = line.index_for_x(x) {
5378 (ix as u32, px(0.))
5379 } else {
5380 (line.len as u32, px(0.).max(x - line.width))
5381 }
5382 } else {
5383 (0, x)
5384 };
5385
5386 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
5387 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
5388 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
5389
5390 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
5391 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
5392 PointForPosition {
5393 previous_valid,
5394 next_valid,
5395 exact_unclipped,
5396 column_overshoot_after_line_end,
5397 }
5398 }
5399}
5400
5401struct BlockLayout {
5402 row: DisplayRow,
5403 element: AnyElement,
5404 available_space: Size<AvailableSpace>,
5405 style: BlockStyle,
5406}
5407
5408fn layout_line(
5409 row: DisplayRow,
5410 snapshot: &EditorSnapshot,
5411 style: &EditorStyle,
5412 cx: &mut WindowContext,
5413) -> LineWithInvisibles {
5414 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
5415 LineWithInvisibles::from_chunks(chunks, &style.text, MAX_LINE_LEN, 1, &[], snapshot.mode, cx)
5416 .pop()
5417 .unwrap()
5418}
5419
5420#[derive(Debug)]
5421pub struct IndentGuideLayout {
5422 origin: gpui::Point<Pixels>,
5423 length: Pixels,
5424 single_indent_width: Pixels,
5425 depth: u32,
5426 active: bool,
5427 settings: IndentGuideSettings,
5428}
5429
5430pub struct CursorLayout {
5431 origin: gpui::Point<Pixels>,
5432 block_width: Pixels,
5433 line_height: Pixels,
5434 color: Hsla,
5435 shape: CursorShape,
5436 block_text: Option<ShapedLine>,
5437 cursor_name: Option<AnyElement>,
5438}
5439
5440#[derive(Debug)]
5441pub struct CursorName {
5442 string: SharedString,
5443 color: Hsla,
5444 is_top_row: bool,
5445}
5446
5447impl CursorLayout {
5448 pub fn new(
5449 origin: gpui::Point<Pixels>,
5450 block_width: Pixels,
5451 line_height: Pixels,
5452 color: Hsla,
5453 shape: CursorShape,
5454 block_text: Option<ShapedLine>,
5455 ) -> CursorLayout {
5456 CursorLayout {
5457 origin,
5458 block_width,
5459 line_height,
5460 color,
5461 shape,
5462 block_text,
5463 cursor_name: None,
5464 }
5465 }
5466
5467 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
5468 Bounds {
5469 origin: self.origin + origin,
5470 size: size(self.block_width, self.line_height),
5471 }
5472 }
5473
5474 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
5475 match self.shape {
5476 CursorShape::Bar => Bounds {
5477 origin: self.origin + origin,
5478 size: size(px(2.0), self.line_height),
5479 },
5480 CursorShape::Block | CursorShape::Hollow => Bounds {
5481 origin: self.origin + origin,
5482 size: size(self.block_width, self.line_height),
5483 },
5484 CursorShape::Underscore => Bounds {
5485 origin: self.origin
5486 + origin
5487 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
5488 size: size(self.block_width, px(2.0)),
5489 },
5490 }
5491 }
5492
5493 pub fn layout(
5494 &mut self,
5495 origin: gpui::Point<Pixels>,
5496 cursor_name: Option<CursorName>,
5497 cx: &mut WindowContext,
5498 ) {
5499 if let Some(cursor_name) = cursor_name {
5500 let bounds = self.bounds(origin);
5501 let text_size = self.line_height / 1.5;
5502
5503 let name_origin = if cursor_name.is_top_row {
5504 point(bounds.right() - px(1.), bounds.top())
5505 } else {
5506 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
5507 };
5508 let mut name_element = div()
5509 .bg(self.color)
5510 .text_size(text_size)
5511 .px_0p5()
5512 .line_height(text_size + px(2.))
5513 .text_color(cursor_name.color)
5514 .child(cursor_name.string.clone())
5515 .into_any_element();
5516
5517 name_element.prepaint_as_root(
5518 name_origin,
5519 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
5520 cx,
5521 );
5522
5523 self.cursor_name = Some(name_element);
5524 }
5525 }
5526
5527 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
5528 let bounds = self.bounds(origin);
5529
5530 //Draw background or border quad
5531 let cursor = if matches!(self.shape, CursorShape::Hollow) {
5532 outline(bounds, self.color)
5533 } else {
5534 fill(bounds, self.color)
5535 };
5536
5537 if let Some(name) = &mut self.cursor_name {
5538 name.paint(cx);
5539 }
5540
5541 cx.paint_quad(cursor);
5542
5543 if let Some(block_text) = &self.block_text {
5544 block_text
5545 .paint(self.origin + origin, self.line_height, cx)
5546 .log_err();
5547 }
5548 }
5549
5550 pub fn shape(&self) -> CursorShape {
5551 self.shape
5552 }
5553}
5554
5555#[derive(Debug)]
5556pub struct HighlightedRange {
5557 pub start_y: Pixels,
5558 pub line_height: Pixels,
5559 pub lines: Vec<HighlightedRangeLine>,
5560 pub color: Hsla,
5561 pub corner_radius: Pixels,
5562}
5563
5564#[derive(Debug)]
5565pub struct HighlightedRangeLine {
5566 pub start_x: Pixels,
5567 pub end_x: Pixels,
5568}
5569
5570impl HighlightedRange {
5571 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
5572 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
5573 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
5574 self.paint_lines(
5575 self.start_y + self.line_height,
5576 &self.lines[1..],
5577 bounds,
5578 cx,
5579 );
5580 } else {
5581 self.paint_lines(self.start_y, &self.lines, bounds, cx);
5582 }
5583 }
5584
5585 fn paint_lines(
5586 &self,
5587 start_y: Pixels,
5588 lines: &[HighlightedRangeLine],
5589 _bounds: Bounds<Pixels>,
5590 cx: &mut WindowContext,
5591 ) {
5592 if lines.is_empty() {
5593 return;
5594 }
5595
5596 let first_line = lines.first().unwrap();
5597 let last_line = lines.last().unwrap();
5598
5599 let first_top_left = point(first_line.start_x, start_y);
5600 let first_top_right = point(first_line.end_x, start_y);
5601
5602 let curve_height = point(Pixels::ZERO, self.corner_radius);
5603 let curve_width = |start_x: Pixels, end_x: Pixels| {
5604 let max = (end_x - start_x) / 2.;
5605 let width = if max < self.corner_radius {
5606 max
5607 } else {
5608 self.corner_radius
5609 };
5610
5611 point(width, Pixels::ZERO)
5612 };
5613
5614 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
5615 let mut path = gpui::Path::new(first_top_right - top_curve_width);
5616 path.curve_to(first_top_right + curve_height, first_top_right);
5617
5618 let mut iter = lines.iter().enumerate().peekable();
5619 while let Some((ix, line)) = iter.next() {
5620 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
5621
5622 if let Some((_, next_line)) = iter.peek() {
5623 let next_top_right = point(next_line.end_x, bottom_right.y);
5624
5625 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
5626 Ordering::Equal => {
5627 path.line_to(bottom_right);
5628 }
5629 Ordering::Less => {
5630 let curve_width = curve_width(next_top_right.x, bottom_right.x);
5631 path.line_to(bottom_right - curve_height);
5632 if self.corner_radius > Pixels::ZERO {
5633 path.curve_to(bottom_right - curve_width, bottom_right);
5634 }
5635 path.line_to(next_top_right + curve_width);
5636 if self.corner_radius > Pixels::ZERO {
5637 path.curve_to(next_top_right + curve_height, next_top_right);
5638 }
5639 }
5640 Ordering::Greater => {
5641 let curve_width = curve_width(bottom_right.x, next_top_right.x);
5642 path.line_to(bottom_right - curve_height);
5643 if self.corner_radius > Pixels::ZERO {
5644 path.curve_to(bottom_right + curve_width, bottom_right);
5645 }
5646 path.line_to(next_top_right - curve_width);
5647 if self.corner_radius > Pixels::ZERO {
5648 path.curve_to(next_top_right + curve_height, next_top_right);
5649 }
5650 }
5651 }
5652 } else {
5653 let curve_width = curve_width(line.start_x, line.end_x);
5654 path.line_to(bottom_right - curve_height);
5655 if self.corner_radius > Pixels::ZERO {
5656 path.curve_to(bottom_right - curve_width, bottom_right);
5657 }
5658
5659 let bottom_left = point(line.start_x, bottom_right.y);
5660 path.line_to(bottom_left + curve_width);
5661 if self.corner_radius > Pixels::ZERO {
5662 path.curve_to(bottom_left - curve_height, bottom_left);
5663 }
5664 }
5665 }
5666
5667 if first_line.start_x > last_line.start_x {
5668 let curve_width = curve_width(last_line.start_x, first_line.start_x);
5669 let second_top_left = point(last_line.start_x, start_y + self.line_height);
5670 path.line_to(second_top_left + curve_height);
5671 if self.corner_radius > Pixels::ZERO {
5672 path.curve_to(second_top_left + curve_width, second_top_left);
5673 }
5674 let first_bottom_left = point(first_line.start_x, second_top_left.y);
5675 path.line_to(first_bottom_left - curve_width);
5676 if self.corner_radius > Pixels::ZERO {
5677 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
5678 }
5679 }
5680
5681 path.line_to(first_top_left + curve_height);
5682 if self.corner_radius > Pixels::ZERO {
5683 path.curve_to(first_top_left + top_curve_width, first_top_left);
5684 }
5685 path.line_to(first_top_right - top_curve_width);
5686
5687 cx.paint_path(path, self.color);
5688 }
5689}
5690
5691pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
5692 (delta.pow(1.5) / 100.0).into()
5693}
5694
5695fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
5696 (delta.pow(1.2) / 300.0).into()
5697}
5698
5699#[cfg(test)]
5700mod tests {
5701 use super::*;
5702 use crate::{
5703 display_map::{BlockDisposition, BlockProperties},
5704 editor_tests::{init_test, update_test_language_settings},
5705 Editor, MultiBuffer,
5706 };
5707 use gpui::{TestAppContext, VisualTestContext};
5708 use language::language_settings;
5709 use log::info;
5710 use std::num::NonZeroU32;
5711 use ui::Context;
5712 use util::test::sample_text;
5713
5714 #[gpui::test]
5715 fn test_shape_line_numbers(cx: &mut TestAppContext) {
5716 init_test(cx, |_| {});
5717 let window = cx.add_window(|cx| {
5718 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5719 Editor::new(EditorMode::Full, buffer, None, true, cx)
5720 });
5721
5722 let editor = window.root(cx).unwrap();
5723 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
5724 let element = EditorElement::new(&editor, style);
5725 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
5726
5727 let layouts = cx
5728 .update_window(*window, |_, cx| {
5729 element.layout_line_numbers(
5730 DisplayRow(0)..DisplayRow(6),
5731 (0..6).map(MultiBufferRow).map(Some),
5732 &Default::default(),
5733 Some(DisplayPoint::new(DisplayRow(0), 0)),
5734 &snapshot,
5735 cx,
5736 )
5737 })
5738 .unwrap();
5739 assert_eq!(layouts.len(), 6);
5740
5741 let relative_rows = window
5742 .update(cx, |editor, cx| {
5743 let snapshot = editor.snapshot(cx);
5744 element.calculate_relative_line_numbers(
5745 &snapshot,
5746 &(DisplayRow(0)..DisplayRow(6)),
5747 Some(DisplayRow(3)),
5748 )
5749 })
5750 .unwrap();
5751 assert_eq!(relative_rows[&DisplayRow(0)], 3);
5752 assert_eq!(relative_rows[&DisplayRow(1)], 2);
5753 assert_eq!(relative_rows[&DisplayRow(2)], 1);
5754 // current line has no relative number
5755 assert_eq!(relative_rows[&DisplayRow(4)], 1);
5756 assert_eq!(relative_rows[&DisplayRow(5)], 2);
5757
5758 // works if cursor is before screen
5759 let relative_rows = window
5760 .update(cx, |editor, cx| {
5761 let snapshot = editor.snapshot(cx);
5762 element.calculate_relative_line_numbers(
5763 &snapshot,
5764 &(DisplayRow(3)..DisplayRow(6)),
5765 Some(DisplayRow(1)),
5766 )
5767 })
5768 .unwrap();
5769 assert_eq!(relative_rows.len(), 3);
5770 assert_eq!(relative_rows[&DisplayRow(3)], 2);
5771 assert_eq!(relative_rows[&DisplayRow(4)], 3);
5772 assert_eq!(relative_rows[&DisplayRow(5)], 4);
5773
5774 // works if cursor is after screen
5775 let relative_rows = window
5776 .update(cx, |editor, cx| {
5777 let snapshot = editor.snapshot(cx);
5778 element.calculate_relative_line_numbers(
5779 &snapshot,
5780 &(DisplayRow(0)..DisplayRow(3)),
5781 Some(DisplayRow(6)),
5782 )
5783 })
5784 .unwrap();
5785 assert_eq!(relative_rows.len(), 3);
5786 assert_eq!(relative_rows[&DisplayRow(0)], 5);
5787 assert_eq!(relative_rows[&DisplayRow(1)], 4);
5788 assert_eq!(relative_rows[&DisplayRow(2)], 3);
5789 }
5790
5791 #[gpui::test]
5792 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
5793 init_test(cx, |_| {});
5794
5795 let window = cx.add_window(|cx| {
5796 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
5797 Editor::new(EditorMode::Full, buffer, None, true, cx)
5798 });
5799 let cx = &mut VisualTestContext::from_window(*window, cx);
5800 let editor = window.root(cx).unwrap();
5801 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
5802
5803 window
5804 .update(cx, |editor, cx| {
5805 editor.cursor_shape = CursorShape::Block;
5806 editor.change_selections(None, cx, |s| {
5807 s.select_ranges([
5808 Point::new(0, 0)..Point::new(1, 0),
5809 Point::new(3, 2)..Point::new(3, 3),
5810 Point::new(5, 6)..Point::new(6, 0),
5811 ]);
5812 });
5813 })
5814 .unwrap();
5815
5816 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
5817 EditorElement::new(&editor, style)
5818 });
5819
5820 assert_eq!(state.selections.len(), 1);
5821 let local_selections = &state.selections[0].1;
5822 assert_eq!(local_selections.len(), 3);
5823 // moves cursor back one line
5824 assert_eq!(
5825 local_selections[0].head,
5826 DisplayPoint::new(DisplayRow(0), 6)
5827 );
5828 assert_eq!(
5829 local_selections[0].range,
5830 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
5831 );
5832
5833 // moves cursor back one column
5834 assert_eq!(
5835 local_selections[1].range,
5836 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
5837 );
5838 assert_eq!(
5839 local_selections[1].head,
5840 DisplayPoint::new(DisplayRow(3), 2)
5841 );
5842
5843 // leaves cursor on the max point
5844 assert_eq!(
5845 local_selections[2].range,
5846 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
5847 );
5848 assert_eq!(
5849 local_selections[2].head,
5850 DisplayPoint::new(DisplayRow(6), 0)
5851 );
5852
5853 // active lines does not include 1 (even though the range of the selection does)
5854 assert_eq!(
5855 state.active_rows.keys().cloned().collect::<Vec<_>>(),
5856 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
5857 );
5858
5859 // multi-buffer support
5860 // in DisplayPoint coordinates, this is what we're dealing with:
5861 // 0: [[file
5862 // 1: header
5863 // 2: section]]
5864 // 3: aaaaaa
5865 // 4: bbbbbb
5866 // 5: cccccc
5867 // 6:
5868 // 7: [[footer]]
5869 // 8: [[header]]
5870 // 9: ffffff
5871 // 10: gggggg
5872 // 11: hhhhhh
5873 // 12:
5874 // 13: [[footer]]
5875 // 14: [[file
5876 // 15: header
5877 // 16: section]]
5878 // 17: bbbbbb
5879 // 18: cccccc
5880 // 19: dddddd
5881 // 20: [[footer]]
5882 let window = cx.add_window(|cx| {
5883 let buffer = MultiBuffer::build_multi(
5884 [
5885 (
5886 &(sample_text(8, 6, 'a') + "\n"),
5887 vec![
5888 Point::new(0, 0)..Point::new(3, 0),
5889 Point::new(4, 0)..Point::new(7, 0),
5890 ],
5891 ),
5892 (
5893 &(sample_text(8, 6, 'a') + "\n"),
5894 vec![Point::new(1, 0)..Point::new(3, 0)],
5895 ),
5896 ],
5897 cx,
5898 );
5899 Editor::new(EditorMode::Full, buffer, None, true, cx)
5900 });
5901 let editor = window.root(cx).unwrap();
5902 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
5903 let _state = window.update(cx, |editor, cx| {
5904 editor.cursor_shape = CursorShape::Block;
5905 editor.change_selections(None, cx, |s| {
5906 s.select_display_ranges([
5907 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
5908 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
5909 ]);
5910 });
5911 });
5912
5913 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
5914 EditorElement::new(&editor, style)
5915 });
5916 assert_eq!(state.selections.len(), 1);
5917 let local_selections = &state.selections[0].1;
5918 assert_eq!(local_selections.len(), 2);
5919
5920 // moves cursor on excerpt boundary back a line
5921 // and doesn't allow selection to bleed through
5922 assert_eq!(
5923 local_selections[0].range,
5924 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
5925 );
5926 assert_eq!(
5927 local_selections[0].head,
5928 DisplayPoint::new(DisplayRow(6), 0)
5929 );
5930 // moves cursor on buffer boundary back two lines
5931 // and doesn't allow selection to bleed through
5932 assert_eq!(
5933 local_selections[1].range,
5934 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
5935 );
5936 assert_eq!(
5937 local_selections[1].head,
5938 DisplayPoint::new(DisplayRow(12), 0)
5939 );
5940 }
5941
5942 #[gpui::test]
5943 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
5944 init_test(cx, |_| {});
5945
5946 let window = cx.add_window(|cx| {
5947 let buffer = MultiBuffer::build_simple("", cx);
5948 Editor::new(EditorMode::Full, buffer, None, true, cx)
5949 });
5950 let cx = &mut VisualTestContext::from_window(*window, cx);
5951 let editor = window.root(cx).unwrap();
5952 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
5953 window
5954 .update(cx, |editor, cx| {
5955 editor.set_placeholder_text("hello", cx);
5956 editor.insert_blocks(
5957 [BlockProperties {
5958 style: BlockStyle::Fixed,
5959 disposition: BlockDisposition::Above,
5960 height: 3,
5961 position: Anchor::min(),
5962 render: Box::new(|_| div().into_any()),
5963 }],
5964 None,
5965 cx,
5966 );
5967
5968 // Blur the editor so that it displays placeholder text.
5969 cx.blur();
5970 })
5971 .unwrap();
5972
5973 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
5974 EditorElement::new(&editor, style)
5975 });
5976 assert_eq!(state.position_map.line_layouts.len(), 4);
5977 assert_eq!(
5978 state
5979 .line_numbers
5980 .iter()
5981 .map(Option::is_some)
5982 .collect::<Vec<_>>(),
5983 &[false, false, false, true]
5984 );
5985 }
5986
5987 #[gpui::test]
5988 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
5989 const TAB_SIZE: u32 = 4;
5990
5991 let input_text = "\t \t|\t| a b";
5992 let expected_invisibles = vec![
5993 Invisible::Tab {
5994 line_start_offset: 0,
5995 line_end_offset: TAB_SIZE as usize,
5996 },
5997 Invisible::Whitespace {
5998 line_offset: TAB_SIZE as usize,
5999 },
6000 Invisible::Tab {
6001 line_start_offset: TAB_SIZE as usize + 1,
6002 line_end_offset: TAB_SIZE as usize * 2,
6003 },
6004 Invisible::Tab {
6005 line_start_offset: TAB_SIZE as usize * 2 + 1,
6006 line_end_offset: TAB_SIZE as usize * 3,
6007 },
6008 Invisible::Whitespace {
6009 line_offset: TAB_SIZE as usize * 3 + 1,
6010 },
6011 Invisible::Whitespace {
6012 line_offset: TAB_SIZE as usize * 3 + 3,
6013 },
6014 ];
6015 assert_eq!(
6016 expected_invisibles.len(),
6017 input_text
6018 .chars()
6019 .filter(|initial_char| initial_char.is_whitespace())
6020 .count(),
6021 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6022 );
6023
6024 init_test(cx, |s| {
6025 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6026 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
6027 });
6028
6029 let actual_invisibles =
6030 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
6031
6032 assert_eq!(expected_invisibles, actual_invisibles);
6033 }
6034
6035 #[gpui::test]
6036 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
6037 init_test(cx, |s| {
6038 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6039 s.defaults.tab_size = NonZeroU32::new(4);
6040 });
6041
6042 for editor_mode_without_invisibles in [
6043 EditorMode::SingleLine,
6044 EditorMode::AutoHeight { max_lines: 100 },
6045 ] {
6046 let invisibles = collect_invisibles_from_new_editor(
6047 cx,
6048 editor_mode_without_invisibles,
6049 "\t\t\t| | a b",
6050 px(500.0),
6051 );
6052 assert!(invisibles.is_empty(),
6053 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
6054 }
6055 }
6056
6057 #[gpui::test]
6058 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
6059 let tab_size = 4;
6060 let input_text = "a\tbcd ".repeat(9);
6061 let repeated_invisibles = [
6062 Invisible::Tab {
6063 line_start_offset: 1,
6064 line_end_offset: tab_size as usize,
6065 },
6066 Invisible::Whitespace {
6067 line_offset: tab_size as usize + 3,
6068 },
6069 Invisible::Whitespace {
6070 line_offset: tab_size as usize + 4,
6071 },
6072 Invisible::Whitespace {
6073 line_offset: tab_size as usize + 5,
6074 },
6075 Invisible::Whitespace {
6076 line_offset: tab_size as usize + 6,
6077 },
6078 Invisible::Whitespace {
6079 line_offset: tab_size as usize + 7,
6080 },
6081 ];
6082 let expected_invisibles = std::iter::once(repeated_invisibles)
6083 .cycle()
6084 .take(9)
6085 .flatten()
6086 .collect::<Vec<_>>();
6087 assert_eq!(
6088 expected_invisibles.len(),
6089 input_text
6090 .chars()
6091 .filter(|initial_char| initial_char.is_whitespace())
6092 .count(),
6093 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6094 );
6095 info!("Expected invisibles: {expected_invisibles:?}");
6096
6097 init_test(cx, |_| {});
6098
6099 // Put the same string with repeating whitespace pattern into editors of various size,
6100 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
6101 let resize_step = 10.0;
6102 let mut editor_width = 200.0;
6103 while editor_width <= 1000.0 {
6104 update_test_language_settings(cx, |s| {
6105 s.defaults.tab_size = NonZeroU32::new(tab_size);
6106 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6107 s.defaults.preferred_line_length = Some(editor_width as u32);
6108 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
6109 });
6110
6111 let actual_invisibles = collect_invisibles_from_new_editor(
6112 cx,
6113 EditorMode::Full,
6114 &input_text,
6115 px(editor_width),
6116 );
6117
6118 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
6119 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
6120 let mut i = 0;
6121 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
6122 i = actual_index;
6123 match expected_invisibles.get(i) {
6124 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
6125 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
6126 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
6127 _ => {
6128 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
6129 }
6130 },
6131 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
6132 }
6133 }
6134 let missing_expected_invisibles = &expected_invisibles[i + 1..];
6135 assert!(
6136 missing_expected_invisibles.is_empty(),
6137 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
6138 );
6139
6140 editor_width += resize_step;
6141 }
6142 }
6143
6144 fn collect_invisibles_from_new_editor(
6145 cx: &mut TestAppContext,
6146 editor_mode: EditorMode,
6147 input_text: &str,
6148 editor_width: Pixels,
6149 ) -> Vec<Invisible> {
6150 info!(
6151 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
6152 editor_width.0
6153 );
6154 let window = cx.add_window(|cx| {
6155 let buffer = MultiBuffer::build_simple(&input_text, cx);
6156 Editor::new(editor_mode, buffer, None, true, cx)
6157 });
6158 let cx = &mut VisualTestContext::from_window(*window, cx);
6159 let editor = window.root(cx).unwrap();
6160 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6161 window
6162 .update(cx, |editor, cx| {
6163 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
6164 editor.set_wrap_width(Some(editor_width), cx);
6165 })
6166 .unwrap();
6167 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6168 EditorElement::new(&editor, style)
6169 });
6170 state
6171 .position_map
6172 .line_layouts
6173 .iter()
6174 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
6175 .cloned()
6176 .collect()
6177 }
6178}
6179
6180pub fn register_action<T: Action>(
6181 view: &View<Editor>,
6182 cx: &mut WindowContext,
6183 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
6184) {
6185 let view = view.clone();
6186 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
6187 let action = action.downcast_ref().unwrap();
6188 if phase == DispatchPhase::Bubble {
6189 view.update(cx, |editor, cx| {
6190 listener(editor, action, cx);
6191 })
6192 }
6193 })
6194}
6195
6196fn compute_auto_height_layout(
6197 editor: &mut Editor,
6198 max_lines: usize,
6199 max_line_number_width: Pixels,
6200 known_dimensions: Size<Option<Pixels>>,
6201 available_width: AvailableSpace,
6202 cx: &mut ViewContext<Editor>,
6203) -> Option<Size<Pixels>> {
6204 let width = known_dimensions.width.or_else(|| {
6205 if let AvailableSpace::Definite(available_width) = available_width {
6206 Some(available_width)
6207 } else {
6208 None
6209 }
6210 })?;
6211 if let Some(height) = known_dimensions.height {
6212 return Some(size(width, height));
6213 }
6214
6215 let style = editor.style.as_ref().unwrap();
6216 let font_id = cx.text_system().resolve_font(&style.text.font());
6217 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6218 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6219 let em_width = cx
6220 .text_system()
6221 .typographic_bounds(font_id, font_size, 'm')
6222 .unwrap()
6223 .size
6224 .width;
6225
6226 let mut snapshot = editor.snapshot(cx);
6227 let gutter_dimensions =
6228 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
6229
6230 editor.gutter_dimensions = gutter_dimensions;
6231 let text_width = width - gutter_dimensions.width;
6232 let overscroll = size(em_width, px(0.));
6233
6234 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
6235 if editor.set_wrap_width(Some(editor_width), cx) {
6236 snapshot = editor.snapshot(cx);
6237 }
6238
6239 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
6240 let height = scroll_height
6241 .max(line_height)
6242 .min(line_height * max_lines as f32);
6243
6244 Some(size(width, height))
6245}