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