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