1use crate::{
2 blame_entry_tooltip::{blame_entry_relative_timestamp, BlameEntryTooltip},
3 display_map::{
4 Block, BlockContext, BlockStyle, DisplaySnapshot, HighlightedChunk, ToDisplayPoint,
5 },
6 editor_settings::{
7 CurrentLineHighlight, DoubleClickInMultibuffer, MultiCursorModifier, ScrollBeyondLastLine,
8 ShowScrollbar,
9 },
10 git::{
11 blame::{CommitDetails, GitBlame},
12 diff_hunk_to_display, DisplayDiffHunk,
13 },
14 hover_popover::{
15 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
16 },
17 hunk_diff::ExpandedHunk,
18 hunk_status,
19 items::BufferSearchHighlights,
20 mouse_context_menu::MenuPosition,
21 mouse_context_menu::{self, MouseContextMenu},
22 scroll::scroll_amount::ScrollAmount,
23 BlockId, CodeActionsMenu, CursorShape, DisplayPoint, DisplayRow, DocumentHighlightRead,
24 DocumentHighlightWrite, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
25 ExpandExcerpts, FocusedBlock, GutterDimensions, HalfPageDown, HalfPageUp, HoveredCursor,
26 HoveredHunk, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, RangeToAnchorExt, RowExt,
27 RowRangeExt, SelectPhase, Selection, SoftWrap, ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
28};
29use client::ParticipantIndex;
30use collections::{BTreeMap, HashMap};
31use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
32use gpui::Subscription;
33use gpui::{
34 anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
35 transparent_black, Action, AnchorCorner, AnyElement, AvailableSpace, Bounds, ClipboardItem,
36 ContentMask, Corners, CursorStyle, DispatchPhase, Edges, Element, ElementInputHandler, Entity,
37 EntityId, FontId, GlobalElementId, Hitbox, Hsla, InteractiveElement, IntoElement, Length,
38 ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad,
39 ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size,
40 StatefulInteractiveElement, Style, Styled, TextRun, TextStyle, TextStyleRefinement, View,
41 ViewContext, WeakView, WindowContext,
42};
43use itertools::Itertools;
44use language::language_settings::{
45 IndentGuideBackgroundColoring, IndentGuideColoring, IndentGuideSettings, ShowWhitespaceSetting,
46};
47use lsp::DiagnosticSeverity;
48use multi_buffer::{Anchor, MultiBufferPoint, MultiBufferRow};
49use project::{
50 project_settings::{GitGutterSetting, ProjectSettings},
51 ProjectPath,
52};
53use settings::Settings;
54use smallvec::{smallvec, SmallVec};
55use std::{
56 any::TypeId,
57 borrow::Cow,
58 cmp::{self, Ordering},
59 fmt::{self, Write},
60 iter, mem,
61 ops::{Deref, Range},
62 rc::Rc,
63 sync::Arc,
64};
65use sum_tree::Bias;
66use theme::{ActiveTheme, PlayerColor};
67use ui::prelude::*;
68use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
69use util::RangeExt;
70use util::ResultExt;
71use workspace::{item::Item, Workspace};
72
73struct SelectionLayout {
74 head: DisplayPoint,
75 cursor_shape: CursorShape,
76 is_newest: bool,
77 is_local: bool,
78 range: Range<DisplayPoint>,
79 active_rows: Range<DisplayRow>,
80 user_name: Option<SharedString>,
81}
82
83impl SelectionLayout {
84 fn new<T: ToPoint + ToDisplayPoint + Clone>(
85 selection: Selection<T>,
86 line_mode: bool,
87 cursor_shape: CursorShape,
88 map: &DisplaySnapshot,
89 is_newest: bool,
90 is_local: bool,
91 user_name: Option<SharedString>,
92 ) -> Self {
93 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
94 let display_selection = point_selection.map(|p| p.to_display_point(map));
95 let mut range = display_selection.range();
96 let mut head = display_selection.head();
97 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
98 ..map.next_line_boundary(point_selection.end).1.row();
99
100 // vim visual line mode
101 if line_mode {
102 let point_range = map.expand_to_line(point_selection.range());
103 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
104 }
105
106 // any vim visual mode (including line mode)
107 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
108 && !range.is_empty()
109 && !selection.reversed
110 {
111 if head.column() > 0 {
112 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
113 } else if head.row().0 > 0 && head != map.max_point() {
114 head = map.clip_point(
115 DisplayPoint::new(
116 head.row().previous_row(),
117 map.line_len(head.row().previous_row()),
118 ),
119 Bias::Left,
120 );
121 // updating range.end is a no-op unless you're cursor is
122 // on the newline containing a multi-buffer divider
123 // in which case the clip_point may have moved the head up
124 // an additional row.
125 range.end = DisplayPoint::new(head.row().next_row(), 0);
126 active_rows.end = head.row();
127 }
128 }
129
130 Self {
131 head,
132 cursor_shape,
133 is_newest,
134 is_local,
135 range,
136 active_rows,
137 user_name,
138 }
139 }
140}
141
142pub struct EditorElement {
143 editor: View<Editor>,
144 style: EditorStyle,
145}
146
147type DisplayRowDelta = u32;
148
149impl EditorElement {
150 pub(crate) const SCROLLBAR_WIDTH: Pixels = px(13.);
151
152 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
153 Self {
154 editor: editor.clone(),
155 style,
156 }
157 }
158
159 fn register_actions(&self, cx: &mut WindowContext) {
160 let view = &self.editor;
161 view.update(cx, |editor, cx| {
162 for action in editor.editor_actions.borrow().values() {
163 (action)(cx)
164 }
165 });
166
167 crate::rust_analyzer_ext::apply_related_actions(view, cx);
168 register_action(view, cx, Editor::move_left);
169 register_action(view, cx, Editor::move_right);
170 register_action(view, cx, Editor::move_down);
171 register_action(view, cx, Editor::move_down_by_lines);
172 register_action(view, cx, Editor::select_down_by_lines);
173 register_action(view, cx, Editor::move_up);
174 register_action(view, cx, Editor::move_up_by_lines);
175 register_action(view, cx, Editor::select_up_by_lines);
176 register_action(view, cx, Editor::select_page_down);
177 register_action(view, cx, Editor::select_page_up);
178 register_action(view, cx, Editor::cancel);
179 register_action(view, cx, Editor::newline);
180 register_action(view, cx, Editor::newline_above);
181 register_action(view, cx, Editor::newline_below);
182 register_action(view, cx, Editor::backspace);
183 register_action(view, cx, Editor::delete);
184 register_action(view, cx, Editor::tab);
185 register_action(view, cx, Editor::tab_prev);
186 register_action(view, cx, Editor::indent);
187 register_action(view, cx, Editor::outdent);
188 register_action(view, cx, Editor::delete_line);
189 register_action(view, cx, Editor::join_lines);
190 register_action(view, cx, Editor::sort_lines_case_sensitive);
191 register_action(view, cx, Editor::sort_lines_case_insensitive);
192 register_action(view, cx, Editor::reverse_lines);
193 register_action(view, cx, Editor::shuffle_lines);
194 register_action(view, cx, Editor::convert_to_upper_case);
195 register_action(view, cx, Editor::convert_to_lower_case);
196 register_action(view, cx, Editor::convert_to_title_case);
197 register_action(view, cx, Editor::convert_to_snake_case);
198 register_action(view, cx, Editor::convert_to_kebab_case);
199 register_action(view, cx, Editor::convert_to_upper_camel_case);
200 register_action(view, cx, Editor::convert_to_lower_camel_case);
201 register_action(view, cx, Editor::convert_to_opposite_case);
202 register_action(view, cx, Editor::delete_to_previous_word_start);
203 register_action(view, cx, Editor::delete_to_previous_subword_start);
204 register_action(view, cx, Editor::delete_to_next_word_end);
205 register_action(view, cx, Editor::delete_to_next_subword_end);
206 register_action(view, cx, Editor::delete_to_beginning_of_line);
207 register_action(view, cx, Editor::delete_to_end_of_line);
208 register_action(view, cx, Editor::cut_to_end_of_line);
209 register_action(view, cx, Editor::duplicate_line_up);
210 register_action(view, cx, Editor::duplicate_line_down);
211 register_action(view, cx, Editor::move_line_up);
212 register_action(view, cx, Editor::move_line_down);
213 register_action(view, cx, Editor::transpose);
214 register_action(view, cx, Editor::cut);
215 register_action(view, cx, Editor::copy);
216 register_action(view, cx, Editor::paste);
217 register_action(view, cx, Editor::undo);
218 register_action(view, cx, Editor::redo);
219 register_action(view, cx, Editor::move_page_up);
220 register_action(view, cx, Editor::move_page_down);
221 register_action(view, cx, Editor::next_screen);
222 register_action(view, cx, Editor::scroll_cursor_top);
223 register_action(view, cx, Editor::scroll_cursor_center);
224 register_action(view, cx, Editor::scroll_cursor_bottom);
225 register_action(view, cx, |editor, _: &LineDown, cx| {
226 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
227 });
228 register_action(view, cx, |editor, _: &LineUp, cx| {
229 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
230 });
231 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
232 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
233 });
234 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
235 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
236 });
237 register_action(view, cx, |editor, _: &PageDown, cx| {
238 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
239 });
240 register_action(view, cx, |editor, _: &PageUp, cx| {
241 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
242 });
243 register_action(view, cx, Editor::move_to_previous_word_start);
244 register_action(view, cx, Editor::move_to_previous_subword_start);
245 register_action(view, cx, Editor::move_to_next_word_end);
246 register_action(view, cx, Editor::move_to_next_subword_end);
247 register_action(view, cx, Editor::move_to_beginning_of_line);
248 register_action(view, cx, Editor::move_to_end_of_line);
249 register_action(view, cx, Editor::move_to_start_of_paragraph);
250 register_action(view, cx, Editor::move_to_end_of_paragraph);
251 register_action(view, cx, Editor::move_to_beginning);
252 register_action(view, cx, Editor::move_to_end);
253 register_action(view, cx, Editor::select_up);
254 register_action(view, cx, Editor::select_down);
255 register_action(view, cx, Editor::select_left);
256 register_action(view, cx, Editor::select_right);
257 register_action(view, cx, Editor::select_to_previous_word_start);
258 register_action(view, cx, Editor::select_to_previous_subword_start);
259 register_action(view, cx, Editor::select_to_next_word_end);
260 register_action(view, cx, Editor::select_to_next_subword_end);
261 register_action(view, cx, Editor::select_to_beginning_of_line);
262 register_action(view, cx, Editor::select_to_end_of_line);
263 register_action(view, cx, Editor::select_to_start_of_paragraph);
264 register_action(view, cx, Editor::select_to_end_of_paragraph);
265 register_action(view, cx, Editor::select_to_beginning);
266 register_action(view, cx, Editor::select_to_end);
267 register_action(view, cx, Editor::select_all);
268 register_action(view, cx, |editor, action, cx| {
269 editor.select_all_matches(action, cx).log_err();
270 });
271 register_action(view, cx, Editor::select_line);
272 register_action(view, cx, Editor::split_selection_into_lines);
273 register_action(view, cx, Editor::add_selection_above);
274 register_action(view, cx, Editor::add_selection_below);
275 register_action(view, cx, |editor, action, cx| {
276 editor.select_next(action, cx).log_err();
277 });
278 register_action(view, cx, |editor, action, cx| {
279 editor.select_previous(action, cx).log_err();
280 });
281 register_action(view, cx, Editor::toggle_comments);
282 register_action(view, cx, Editor::select_larger_syntax_node);
283 register_action(view, cx, Editor::select_smaller_syntax_node);
284 register_action(view, cx, Editor::select_enclosing_symbol);
285 register_action(view, cx, Editor::move_to_enclosing_bracket);
286 register_action(view, cx, Editor::undo_selection);
287 register_action(view, cx, Editor::redo_selection);
288 if !view.read(cx).is_singleton(cx) {
289 register_action(view, cx, Editor::expand_excerpts);
290 register_action(view, cx, Editor::expand_excerpts_up);
291 register_action(view, cx, Editor::expand_excerpts_down);
292 }
293 register_action(view, cx, Editor::go_to_diagnostic);
294 register_action(view, cx, Editor::go_to_prev_diagnostic);
295 register_action(view, cx, Editor::go_to_hunk);
296 register_action(view, cx, Editor::go_to_prev_hunk);
297 register_action(view, cx, |editor, a, cx| {
298 editor.go_to_definition(a, cx).detach_and_log_err(cx);
299 });
300 register_action(view, cx, |editor, a, cx| {
301 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
302 });
303 register_action(view, cx, |editor, a, cx| {
304 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
305 });
306 register_action(view, cx, |editor, a, cx| {
307 editor
308 .go_to_implementation_split(a, cx)
309 .detach_and_log_err(cx);
310 });
311 register_action(view, cx, |editor, a, cx| {
312 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
313 });
314 register_action(view, cx, |editor, a, cx| {
315 editor
316 .go_to_type_definition_split(a, cx)
317 .detach_and_log_err(cx);
318 });
319 register_action(view, cx, Editor::open_url);
320 register_action(view, cx, Editor::fold);
321 register_action(view, cx, Editor::fold_at);
322 register_action(view, cx, Editor::unfold_lines);
323 register_action(view, cx, Editor::unfold_at);
324 register_action(view, cx, Editor::fold_selected_ranges);
325 register_action(view, cx, Editor::show_completions);
326 register_action(view, cx, Editor::toggle_code_actions);
327 register_action(view, cx, Editor::open_excerpts);
328 register_action(view, cx, Editor::open_excerpts_in_split);
329 register_action(view, cx, Editor::toggle_soft_wrap);
330 register_action(view, cx, Editor::toggle_tab_bar);
331 register_action(view, cx, Editor::toggle_line_numbers);
332 register_action(view, cx, Editor::toggle_indent_guides);
333 register_action(view, cx, Editor::toggle_inlay_hints);
334 register_action(view, cx, hover_popover::hover);
335 register_action(view, cx, Editor::reveal_in_finder);
336 register_action(view, cx, Editor::copy_path);
337 register_action(view, cx, Editor::copy_relative_path);
338 register_action(view, cx, Editor::copy_highlight_json);
339 register_action(view, cx, Editor::copy_permalink_to_line);
340 register_action(view, cx, Editor::open_permalink_to_line);
341 register_action(view, cx, Editor::toggle_git_blame);
342 register_action(view, cx, Editor::toggle_git_blame_inline);
343 register_action(view, cx, Editor::toggle_hunk_diff);
344 register_action(view, cx, Editor::expand_all_hunk_diffs);
345 register_action(view, cx, |editor, action, cx| {
346 if let Some(task) = editor.format(action, cx) {
347 task.detach_and_log_err(cx);
348 } else {
349 cx.propagate();
350 }
351 });
352 register_action(view, cx, Editor::restart_language_server);
353 register_action(view, cx, Editor::cancel_language_server_work);
354 register_action(view, cx, Editor::show_character_palette);
355 register_action(view, cx, |editor, action, cx| {
356 if let Some(task) = editor.confirm_completion(action, cx) {
357 task.detach_and_log_err(cx);
358 } else {
359 cx.propagate();
360 }
361 });
362 register_action(view, cx, |editor, action, cx| {
363 if let Some(task) = editor.confirm_code_action(action, cx) {
364 task.detach_and_log_err(cx);
365 } else {
366 cx.propagate();
367 }
368 });
369 register_action(view, cx, |editor, action, cx| {
370 if let Some(task) = editor.rename(action, cx) {
371 task.detach_and_log_err(cx);
372 } else {
373 cx.propagate();
374 }
375 });
376 register_action(view, cx, |editor, action, cx| {
377 if let Some(task) = editor.confirm_rename(action, cx) {
378 task.detach_and_log_err(cx);
379 } else {
380 cx.propagate();
381 }
382 });
383 register_action(view, cx, |editor, action, cx| {
384 if let Some(task) = editor.find_all_references(action, cx) {
385 task.detach_and_log_err(cx);
386 } else {
387 cx.propagate();
388 }
389 });
390 register_action(view, cx, Editor::show_signature_help);
391 register_action(view, cx, Editor::next_inline_completion);
392 register_action(view, cx, Editor::previous_inline_completion);
393 register_action(view, cx, Editor::show_inline_completion);
394 register_action(view, cx, Editor::context_menu_first);
395 register_action(view, cx, Editor::context_menu_prev);
396 register_action(view, cx, Editor::context_menu_next);
397 register_action(view, cx, Editor::context_menu_last);
398 register_action(view, cx, Editor::display_cursor_names);
399 register_action(view, cx, Editor::unique_lines_case_insensitive);
400 register_action(view, cx, Editor::unique_lines_case_sensitive);
401 register_action(view, cx, Editor::accept_partial_inline_completion);
402 register_action(view, cx, Editor::accept_inline_completion);
403 register_action(view, cx, Editor::revert_selected_hunks);
404 register_action(view, cx, Editor::open_active_item_in_terminal)
405 }
406
407 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
408 let position_map = layout.position_map.clone();
409 cx.on_key_event({
410 let editor = self.editor.clone();
411 let text_hitbox = layout.text_hitbox.clone();
412 move |event: &ModifiersChangedEvent, phase, cx| {
413 if phase != DispatchPhase::Bubble {
414 return;
415 }
416 editor.update(cx, |editor, cx| {
417 if editor.hover_state.focused(cx) {
418 return;
419 }
420 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
421 })
422 }
423 });
424 }
425
426 fn modifiers_changed(
427 editor: &mut Editor,
428 event: &ModifiersChangedEvent,
429 position_map: &PositionMap,
430 text_hitbox: &Hitbox,
431 cx: &mut ViewContext<Editor>,
432 ) {
433 let mouse_position = cx.mouse_position();
434 if !text_hitbox.is_hovered(cx) {
435 return;
436 }
437
438 editor.update_hovered_link(
439 position_map.point_for_position(text_hitbox.bounds, mouse_position),
440 &position_map.snapshot,
441 event.modifiers,
442 cx,
443 )
444 }
445
446 fn mouse_left_down(
447 editor: &mut Editor,
448 event: &MouseDownEvent,
449 hovered_hunk: Option<HoveredHunk>,
450 position_map: &PositionMap,
451 text_hitbox: &Hitbox,
452 gutter_hitbox: &Hitbox,
453 cx: &mut ViewContext<Editor>,
454 ) {
455 if cx.default_prevented() {
456 return;
457 }
458
459 let mut click_count = event.click_count;
460 let mut modifiers = event.modifiers;
461
462 if let Some(hovered_hunk) = hovered_hunk {
463 if modifiers.control || modifiers.platform {
464 editor.toggle_hovered_hunk(&hovered_hunk, cx);
465 } else {
466 let display_range = hovered_hunk
467 .multi_buffer_range
468 .clone()
469 .to_display_points(&position_map.snapshot);
470 let hunk_bounds = Self::diff_hunk_bounds(
471 &position_map.snapshot,
472 position_map.line_height,
473 gutter_hitbox.bounds,
474 &DisplayDiffHunk::Unfolded {
475 diff_base_byte_range: hovered_hunk.diff_base_byte_range.clone(),
476 display_row_range: display_range.start.row()..display_range.end.row(),
477 multi_buffer_range: hovered_hunk.multi_buffer_range.clone(),
478 status: hovered_hunk.status,
479 },
480 );
481 if hunk_bounds.contains(&event.position) {
482 editor.open_hunk_context_menu(hovered_hunk, event.position, cx);
483 }
484 }
485 cx.notify();
486 return;
487 } else if gutter_hitbox.is_hovered(cx) {
488 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
489 } else if !text_hitbox.is_hovered(cx) {
490 return;
491 }
492
493 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
494 match EditorSettings::get_global(cx).double_click_in_multibuffer {
495 DoubleClickInMultibuffer::Select => {
496 // do nothing special on double click, all selection logic is below
497 }
498 DoubleClickInMultibuffer::Open => {
499 if modifiers.alt {
500 // if double click is made with alt, pretend it's a regular double click without opening and alt,
501 // and run the selection logic.
502 modifiers.alt = false;
503 } else {
504 // if double click is made without alt, open the corresponding excerp
505 editor.open_excerpts(&OpenExcerpts, cx);
506 return;
507 }
508 }
509 }
510 }
511
512 let point_for_position =
513 position_map.point_for_position(text_hitbox.bounds, event.position);
514 let position = point_for_position.previous_valid;
515 if modifiers.shift && modifiers.alt {
516 editor.select(
517 SelectPhase::BeginColumnar {
518 position,
519 reset: false,
520 goal_column: point_for_position.exact_unclipped.column(),
521 },
522 cx,
523 );
524 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
525 {
526 editor.select(
527 SelectPhase::Extend {
528 position,
529 click_count,
530 },
531 cx,
532 );
533 } else {
534 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
535 let multi_cursor_modifier = match multi_cursor_setting {
536 MultiCursorModifier::Alt => modifiers.alt,
537 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
538 };
539 editor.select(
540 SelectPhase::Begin {
541 position,
542 add: multi_cursor_modifier,
543 click_count,
544 },
545 cx,
546 );
547 }
548
549 cx.stop_propagation();
550 }
551
552 fn mouse_right_down(
553 editor: &mut Editor,
554 event: &MouseDownEvent,
555 position_map: &PositionMap,
556 text_hitbox: &Hitbox,
557 cx: &mut ViewContext<Editor>,
558 ) {
559 if !text_hitbox.is_hovered(cx) {
560 return;
561 }
562 let point_for_position =
563 position_map.point_for_position(text_hitbox.bounds, event.position);
564 mouse_context_menu::deploy_context_menu(
565 editor,
566 event.position,
567 point_for_position.previous_valid,
568 cx,
569 );
570 cx.stop_propagation();
571 }
572
573 fn mouse_middle_down(
574 editor: &mut Editor,
575 event: &MouseDownEvent,
576 position_map: &PositionMap,
577 text_hitbox: &Hitbox,
578 cx: &mut ViewContext<Editor>,
579 ) {
580 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
581 return;
582 }
583
584 let point_for_position =
585 position_map.point_for_position(text_hitbox.bounds, event.position);
586 let position = point_for_position.previous_valid;
587
588 editor.select(
589 SelectPhase::BeginColumnar {
590 position,
591 reset: true,
592 goal_column: point_for_position.exact_unclipped.column(),
593 },
594 cx,
595 );
596 }
597
598 fn mouse_up(
599 editor: &mut Editor,
600 event: &MouseUpEvent,
601 position_map: &PositionMap,
602 text_hitbox: &Hitbox,
603 cx: &mut ViewContext<Editor>,
604 ) {
605 let end_selection = editor.has_pending_selection();
606 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
607
608 if end_selection {
609 editor.select(SelectPhase::End, cx);
610 }
611
612 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
613 let multi_cursor_modifier = match multi_cursor_setting {
614 MultiCursorModifier::Alt => event.modifiers.secondary(),
615 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
616 };
617
618 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
619 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
620 editor.handle_click_hovered_link(point, event.modifiers, cx);
621
622 cx.stop_propagation();
623 } else if end_selection && pending_nonempty_selections {
624 cx.stop_propagation();
625 } else if cfg!(target_os = "linux") && event.button == MouseButton::Middle {
626 if !text_hitbox.is_hovered(cx) || editor.read_only(cx) {
627 return;
628 }
629
630 #[cfg(target_os = "linux")]
631 if let Some(item) = cx.read_from_primary() {
632 let point_for_position =
633 position_map.point_for_position(text_hitbox.bounds, event.position);
634 let position = point_for_position.previous_valid;
635
636 editor.select(
637 SelectPhase::Begin {
638 position,
639 add: false,
640 click_count: 1,
641 },
642 cx,
643 );
644 editor.insert(item.text(), cx);
645 }
646 cx.stop_propagation()
647 }
648 }
649
650 fn mouse_dragged(
651 editor: &mut Editor,
652 event: &MouseMoveEvent,
653 position_map: &PositionMap,
654 text_bounds: Bounds<Pixels>,
655 cx: &mut ViewContext<Editor>,
656 ) {
657 if !editor.has_pending_selection() {
658 return;
659 }
660
661 let point_for_position = position_map.point_for_position(text_bounds, event.position);
662 let mut scroll_delta = gpui::Point::<f32>::default();
663 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
664 let top = text_bounds.origin.y + vertical_margin;
665 let bottom = text_bounds.lower_left().y - vertical_margin;
666 if event.position.y < top {
667 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
668 }
669 if event.position.y > bottom {
670 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
671 }
672
673 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
674 let left = text_bounds.origin.x + horizontal_margin;
675 let right = text_bounds.upper_right().x - horizontal_margin;
676 if event.position.x < left {
677 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
678 }
679 if event.position.x > right {
680 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
681 }
682
683 editor.select(
684 SelectPhase::Update {
685 position: point_for_position.previous_valid,
686 goal_column: point_for_position.exact_unclipped.column(),
687 scroll_delta,
688 },
689 cx,
690 );
691 }
692
693 fn mouse_moved(
694 editor: &mut Editor,
695 event: &MouseMoveEvent,
696 position_map: &PositionMap,
697 text_hitbox: &Hitbox,
698 gutter_hitbox: &Hitbox,
699 cx: &mut ViewContext<Editor>,
700 ) {
701 let modifiers = event.modifiers;
702 let gutter_hovered = gutter_hitbox.is_hovered(cx);
703 editor.set_gutter_hovered(gutter_hovered, cx);
704
705 // Don't trigger hover popover if mouse is hovering over context menu
706 if text_hitbox.is_hovered(cx) {
707 let point_for_position =
708 position_map.point_for_position(text_hitbox.bounds, event.position);
709
710 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
711
712 if let Some(point) = point_for_position.as_valid() {
713 let anchor = position_map
714 .snapshot
715 .buffer_snapshot
716 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
717 hover_at(editor, Some(anchor), cx);
718 Self::update_visible_cursor(editor, point, position_map, cx);
719 } else {
720 hover_at(editor, None, cx);
721 }
722 } else {
723 editor.hide_hovered_link(cx);
724 hover_at(editor, None, cx);
725 if gutter_hovered {
726 cx.stop_propagation();
727 }
728 }
729 }
730
731 fn update_visible_cursor(
732 editor: &mut Editor,
733 point: DisplayPoint,
734 position_map: &PositionMap,
735 cx: &mut ViewContext<Editor>,
736 ) {
737 let snapshot = &position_map.snapshot;
738 let Some(hub) = editor.collaboration_hub() else {
739 return;
740 };
741 let start = snapshot.display_snapshot.clip_point(
742 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
743 Bias::Left,
744 );
745 let end = snapshot.display_snapshot.clip_point(
746 DisplayPoint::new(
747 point.row(),
748 (point.column() + 1).min(snapshot.line_len(point.row())),
749 ),
750 Bias::Right,
751 );
752
753 let range = snapshot
754 .buffer_snapshot
755 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
756 ..snapshot
757 .buffer_snapshot
758 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
759
760 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
761 return;
762 };
763 let key = crate::HoveredCursor {
764 replica_id: selection.replica_id,
765 selection_id: selection.selection.id,
766 };
767 editor.hovered_cursors.insert(
768 key.clone(),
769 cx.spawn(|editor, mut cx| async move {
770 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
771 editor
772 .update(&mut cx, |editor, cx| {
773 editor.hovered_cursors.remove(&key);
774 cx.notify();
775 })
776 .ok();
777 }),
778 );
779 cx.notify()
780 }
781
782 fn layout_selections(
783 &self,
784 start_anchor: Anchor,
785 end_anchor: Anchor,
786 snapshot: &EditorSnapshot,
787 start_row: DisplayRow,
788 end_row: DisplayRow,
789 cx: &mut WindowContext,
790 ) -> (
791 Vec<(PlayerColor, Vec<SelectionLayout>)>,
792 BTreeMap<DisplayRow, bool>,
793 Option<DisplayPoint>,
794 ) {
795 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
796 let mut active_rows = BTreeMap::new();
797 let mut newest_selection_head = None;
798 let editor = self.editor.read(cx);
799
800 if editor.show_local_selections {
801 let mut local_selections: Vec<Selection<Point>> = editor
802 .selections
803 .disjoint_in_range(start_anchor..end_anchor, cx);
804 local_selections.extend(editor.selections.pending(cx));
805 let mut layouts = Vec::new();
806 let newest = editor.selections.newest(cx);
807 for selection in local_selections.drain(..) {
808 let is_empty = selection.start == selection.end;
809 let is_newest = selection == newest;
810
811 let layout = SelectionLayout::new(
812 selection,
813 editor.selections.line_mode,
814 editor.cursor_shape,
815 &snapshot.display_snapshot,
816 is_newest,
817 editor.leader_peer_id.is_none(),
818 None,
819 );
820 if is_newest {
821 newest_selection_head = Some(layout.head);
822 }
823
824 for row in cmp::max(layout.active_rows.start.0, start_row.0)
825 ..=cmp::min(layout.active_rows.end.0, end_row.0)
826 {
827 let contains_non_empty_selection =
828 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
829 *contains_non_empty_selection |= !is_empty;
830 }
831 layouts.push(layout);
832 }
833
834 let player = if editor.read_only(cx) {
835 cx.theme().players().read_only()
836 } else {
837 self.style.local_player
838 };
839
840 selections.push((player, layouts));
841 }
842
843 if let Some(collaboration_hub) = &editor.collaboration_hub {
844 // When following someone, render the local selections in their color.
845 if let Some(leader_id) = editor.leader_peer_id {
846 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
847 if let Some(participant_index) = collaboration_hub
848 .user_participant_indices(cx)
849 .get(&collaborator.user_id)
850 {
851 if let Some((local_selection_style, _)) = selections.first_mut() {
852 *local_selection_style = cx
853 .theme()
854 .players()
855 .color_for_participant(participant_index.0);
856 }
857 }
858 }
859 }
860
861 let mut remote_selections = HashMap::default();
862 for selection in snapshot.remote_selections_in_range(
863 &(start_anchor..end_anchor),
864 collaboration_hub.as_ref(),
865 cx,
866 ) {
867 let selection_style = Self::get_participant_color(selection.participant_index, cx);
868
869 // Don't re-render the leader's selections, since the local selections
870 // match theirs.
871 if Some(selection.peer_id) == editor.leader_peer_id {
872 continue;
873 }
874 let key = HoveredCursor {
875 replica_id: selection.replica_id,
876 selection_id: selection.selection.id,
877 };
878
879 let is_shown =
880 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
881
882 remote_selections
883 .entry(selection.replica_id)
884 .or_insert((selection_style, Vec::new()))
885 .1
886 .push(SelectionLayout::new(
887 selection.selection,
888 selection.line_mode,
889 selection.cursor_shape,
890 &snapshot.display_snapshot,
891 false,
892 false,
893 if is_shown { selection.user_name } else { None },
894 ));
895 }
896
897 selections.extend(remote_selections.into_values());
898 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
899 let player = if editor.read_only(cx) {
900 cx.theme().players().read_only()
901 } else {
902 self.style.local_player
903 };
904 let layouts = snapshot
905 .buffer_snapshot
906 .selections_in_range(&(start_anchor..end_anchor), true)
907 .map(move |(_, line_mode, cursor_shape, selection)| {
908 SelectionLayout::new(
909 selection,
910 line_mode,
911 cursor_shape,
912 &snapshot.display_snapshot,
913 false,
914 false,
915 None,
916 )
917 })
918 .collect::<Vec<_>>();
919 selections.push((player, layouts));
920 }
921 (selections, active_rows, newest_selection_head)
922 }
923
924 fn collect_cursors(
925 &self,
926 snapshot: &EditorSnapshot,
927 cx: &mut WindowContext,
928 ) -> Vec<(DisplayPoint, Hsla)> {
929 let editor = self.editor.read(cx);
930 let mut cursors = Vec::new();
931 let mut skip_local = false;
932 let mut add_cursor = |anchor: Anchor, color| {
933 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
934 };
935 // Remote cursors
936 if let Some(collaboration_hub) = &editor.collaboration_hub {
937 for remote_selection in snapshot.remote_selections_in_range(
938 &(Anchor::min()..Anchor::max()),
939 collaboration_hub.deref(),
940 cx,
941 ) {
942 let color = Self::get_participant_color(remote_selection.participant_index, cx);
943 add_cursor(remote_selection.selection.head(), color.cursor);
944 if Some(remote_selection.peer_id) == editor.leader_peer_id {
945 skip_local = true;
946 }
947 }
948 }
949 // Local cursors
950 if !skip_local {
951 let color = cx.theme().players().local().cursor;
952 editor.selections.disjoint.iter().for_each(|selection| {
953 add_cursor(selection.head(), color);
954 });
955 if let Some(ref selection) = editor.selections.pending_anchor() {
956 add_cursor(selection.head(), color);
957 }
958 }
959 cursors
960 }
961
962 #[allow(clippy::too_many_arguments)]
963 fn layout_visible_cursors(
964 &self,
965 snapshot: &EditorSnapshot,
966 selections: &[(PlayerColor, Vec<SelectionLayout>)],
967 visible_display_row_range: Range<DisplayRow>,
968 line_layouts: &[LineWithInvisibles],
969 text_hitbox: &Hitbox,
970 content_origin: gpui::Point<Pixels>,
971 scroll_position: gpui::Point<f32>,
972 scroll_pixel_position: gpui::Point<Pixels>,
973 line_height: Pixels,
974 em_width: Pixels,
975 autoscroll_containing_element: bool,
976 cx: &mut WindowContext,
977 ) -> Vec<CursorLayout> {
978 let mut autoscroll_bounds = None;
979 let cursor_layouts = self.editor.update(cx, |editor, cx| {
980 let mut cursors = Vec::new();
981 for (player_color, selections) in selections {
982 for selection in selections {
983 let cursor_position = selection.head;
984
985 let in_range = visible_display_row_range.contains(&cursor_position.row());
986 if (selection.is_local && !editor.show_local_cursors(cx)) || !in_range {
987 continue;
988 }
989
990 let cursor_row_layout = &line_layouts
991 [cursor_position.row().minus(visible_display_row_range.start) as usize];
992 let cursor_column = cursor_position.column() as usize;
993
994 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
995 let mut block_width =
996 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
997 if block_width == Pixels::ZERO {
998 block_width = em_width;
999 }
1000 let block_text = if let CursorShape::Block = selection.cursor_shape {
1001 snapshot.display_chars_at(cursor_position).next().and_then(
1002 |(character, _)| {
1003 let text = if character == '\n' {
1004 SharedString::from(" ")
1005 } else {
1006 SharedString::from(character.to_string())
1007 };
1008 let len = text.len();
1009
1010 let font = cursor_row_layout
1011 .font_id_for_index(cursor_column)
1012 .and_then(|cursor_font_id| {
1013 cx.text_system().get_font_for_id(cursor_font_id)
1014 })
1015 .unwrap_or(self.style.text.font());
1016
1017 cx.text_system()
1018 .shape_line(
1019 text,
1020 cursor_row_layout.font_size,
1021 &[TextRun {
1022 len,
1023 font,
1024 color: self.style.background,
1025 background_color: None,
1026 strikethrough: None,
1027 underline: None,
1028 }],
1029 )
1030 .log_err()
1031 },
1032 )
1033 } else {
1034 None
1035 };
1036
1037 let x = cursor_character_x - scroll_pixel_position.x;
1038 let y = (cursor_position.row().as_f32()
1039 - scroll_pixel_position.y / line_height)
1040 * line_height;
1041 if selection.is_newest {
1042 editor.pixel_position_of_newest_cursor = Some(point(
1043 text_hitbox.origin.x + x + block_width / 2.,
1044 text_hitbox.origin.y + y + line_height / 2.,
1045 ));
1046
1047 if autoscroll_containing_element {
1048 let top = text_hitbox.origin.y
1049 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1050 * line_height;
1051 let left = text_hitbox.origin.x
1052 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1053 .max(0.)
1054 * em_width;
1055
1056 let bottom = text_hitbox.origin.y
1057 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1058 * line_height;
1059 let right = text_hitbox.origin.x
1060 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1061 * em_width;
1062
1063 autoscroll_bounds =
1064 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1065 }
1066 }
1067
1068 let mut cursor = CursorLayout {
1069 color: player_color.cursor,
1070 block_width,
1071 origin: point(x, y),
1072 line_height,
1073 shape: selection.cursor_shape,
1074 block_text,
1075 cursor_name: None,
1076 };
1077 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1078 string: name,
1079 color: self.style.background,
1080 is_top_row: cursor_position.row().0 == 0,
1081 });
1082 cursor.layout(content_origin, cursor_name, cx);
1083 cursors.push(cursor);
1084 }
1085 }
1086 cursors
1087 });
1088
1089 if let Some(bounds) = autoscroll_bounds {
1090 cx.request_autoscroll(bounds);
1091 }
1092
1093 cursor_layouts
1094 }
1095
1096 fn layout_scrollbar(
1097 &self,
1098 snapshot: &EditorSnapshot,
1099 bounds: Bounds<Pixels>,
1100 scroll_position: gpui::Point<f32>,
1101 rows_per_page: f32,
1102 non_visible_cursors: bool,
1103 cx: &mut WindowContext,
1104 ) -> Option<ScrollbarLayout> {
1105 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1106 let show_scrollbars = match scrollbar_settings.show {
1107 ShowScrollbar::Auto => {
1108 let editor = self.editor.read(cx);
1109 let is_singleton = editor.is_singleton(cx);
1110 // Git
1111 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1112 ||
1113 // Buffer Search Results
1114 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1115 ||
1116 // Selected Symbol Occurrences
1117 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1118 ||
1119 // Diagnostics
1120 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
1121 ||
1122 // Cursors out of sight
1123 non_visible_cursors
1124 ||
1125 // Scrollmanager
1126 editor.scroll_manager.scrollbars_visible()
1127 }
1128 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1129 ShowScrollbar::Always => true,
1130 ShowScrollbar::Never => false,
1131 };
1132 if snapshot.mode != EditorMode::Full {
1133 return None;
1134 }
1135
1136 let visible_row_range = scroll_position.y..scroll_position.y + rows_per_page;
1137
1138 // If a drag took place after we started dragging the scrollbar,
1139 // cancel the scrollbar drag.
1140 if cx.has_active_drag() {
1141 self.editor.update(cx, |editor, cx| {
1142 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1143 });
1144 }
1145
1146 let track_bounds = Bounds::from_corners(
1147 point(self.scrollbar_left(&bounds), bounds.origin.y),
1148 point(bounds.lower_right().x, bounds.lower_left().y),
1149 );
1150
1151 let settings = EditorSettings::get_global(cx);
1152 let scroll_beyond_last_line: f32 = match settings.scroll_beyond_last_line {
1153 ScrollBeyondLastLine::OnePage => rows_per_page,
1154 ScrollBeyondLastLine::Off => 1.0,
1155 ScrollBeyondLastLine::VerticalScrollMargin => 1.0 + settings.vertical_scroll_margin,
1156 };
1157 let total_rows =
1158 (snapshot.max_point().row().as_f32() + scroll_beyond_last_line).max(rows_per_page);
1159 let height = bounds.size.height;
1160 let px_per_row = height / total_rows;
1161 let thumb_height = (rows_per_page * px_per_row).max(ScrollbarLayout::MIN_THUMB_HEIGHT);
1162 let row_height = (height - thumb_height) / (total_rows - rows_per_page).max(0.);
1163
1164 Some(ScrollbarLayout {
1165 hitbox: cx.insert_hitbox(track_bounds, false),
1166 visible_row_range,
1167 row_height,
1168 visible: show_scrollbars,
1169 thumb_height,
1170 })
1171 }
1172
1173 #[allow(clippy::too_many_arguments)]
1174 fn prepaint_gutter_fold_toggles(
1175 &self,
1176 toggles: &mut [Option<AnyElement>],
1177 line_height: Pixels,
1178 gutter_dimensions: &GutterDimensions,
1179 gutter_settings: crate::editor_settings::Gutter,
1180 scroll_pixel_position: gpui::Point<Pixels>,
1181 gutter_hitbox: &Hitbox,
1182 cx: &mut WindowContext,
1183 ) {
1184 for (ix, fold_indicator) in toggles.iter_mut().enumerate() {
1185 if let Some(fold_indicator) = fold_indicator {
1186 debug_assert!(gutter_settings.folds);
1187 let available_space = size(
1188 AvailableSpace::MinContent,
1189 AvailableSpace::Definite(line_height * 0.55),
1190 );
1191 let fold_indicator_size = fold_indicator.layout_as_root(available_space, cx);
1192
1193 let position = point(
1194 gutter_dimensions.width - gutter_dimensions.right_padding,
1195 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1196 );
1197 let centering_offset = point(
1198 (gutter_dimensions.fold_area_width() - fold_indicator_size.width) / 2.,
1199 (line_height - fold_indicator_size.height) / 2.,
1200 );
1201 let origin = gutter_hitbox.origin + position + centering_offset;
1202 fold_indicator.prepaint_as_root(origin, available_space, cx);
1203 }
1204 }
1205 }
1206
1207 #[allow(clippy::too_many_arguments)]
1208 fn prepaint_crease_trailers(
1209 &self,
1210 trailers: Vec<Option<AnyElement>>,
1211 lines: &[LineWithInvisibles],
1212 line_height: Pixels,
1213 content_origin: gpui::Point<Pixels>,
1214 scroll_pixel_position: gpui::Point<Pixels>,
1215 em_width: Pixels,
1216 cx: &mut WindowContext,
1217 ) -> Vec<Option<CreaseTrailerLayout>> {
1218 trailers
1219 .into_iter()
1220 .enumerate()
1221 .map(|(ix, element)| {
1222 let mut element = element?;
1223 let available_space = size(
1224 AvailableSpace::MinContent,
1225 AvailableSpace::Definite(line_height),
1226 );
1227 let size = element.layout_as_root(available_space, cx);
1228
1229 let line = &lines[ix];
1230 let padding = if line.width == Pixels::ZERO {
1231 Pixels::ZERO
1232 } else {
1233 4. * em_width
1234 };
1235 let position = point(
1236 scroll_pixel_position.x + line.width + padding,
1237 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1238 );
1239 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1240 let origin = content_origin + position + centering_offset;
1241 element.prepaint_as_root(origin, available_space, cx);
1242 Some(CreaseTrailerLayout {
1243 element,
1244 bounds: Bounds::new(origin, size),
1245 })
1246 })
1247 .collect()
1248 }
1249
1250 // Folds contained in a hunk are ignored apart from shrinking visual size
1251 // If a fold contains any hunks then that fold line is marked as modified
1252 fn layout_gutter_git_hunks(
1253 &self,
1254 line_height: Pixels,
1255 gutter_hitbox: &Hitbox,
1256 display_rows: Range<DisplayRow>,
1257 snapshot: &EditorSnapshot,
1258 cx: &mut WindowContext,
1259 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1260 let buffer_snapshot = &snapshot.buffer_snapshot;
1261
1262 let buffer_start_row = MultiBufferRow(
1263 DisplayPoint::new(display_rows.start, 0)
1264 .to_point(snapshot)
1265 .row,
1266 );
1267 let buffer_end_row = MultiBufferRow(
1268 DisplayPoint::new(display_rows.end, 0)
1269 .to_point(snapshot)
1270 .row,
1271 );
1272
1273 let git_gutter_setting = ProjectSettings::get_global(cx)
1274 .git
1275 .git_gutter
1276 .unwrap_or_default();
1277 let display_hunks = buffer_snapshot
1278 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1279 .map(|hunk| diff_hunk_to_display(&hunk, snapshot))
1280 .dedup()
1281 .map(|hunk| match git_gutter_setting {
1282 GitGutterSetting::TrackedFiles => {
1283 let hitbox = match hunk {
1284 DisplayDiffHunk::Unfolded { .. } => {
1285 let hunk_bounds = Self::diff_hunk_bounds(
1286 &snapshot,
1287 line_height,
1288 gutter_hitbox.bounds,
1289 &hunk,
1290 );
1291 Some(cx.insert_hitbox(hunk_bounds, true))
1292 }
1293 DisplayDiffHunk::Folded { .. } => None,
1294 };
1295 (hunk, hitbox)
1296 }
1297 GitGutterSetting::Hide => (hunk, None),
1298 })
1299 .collect();
1300 display_hunks
1301 }
1302
1303 #[allow(clippy::too_many_arguments)]
1304 fn layout_inline_blame(
1305 &self,
1306 display_row: DisplayRow,
1307 display_snapshot: &DisplaySnapshot,
1308 line_layout: &LineWithInvisibles,
1309 crease_trailer: Option<&CreaseTrailerLayout>,
1310 em_width: Pixels,
1311 content_origin: gpui::Point<Pixels>,
1312 scroll_pixel_position: gpui::Point<Pixels>,
1313 line_height: Pixels,
1314 cx: &mut WindowContext,
1315 ) -> Option<AnyElement> {
1316 if !self
1317 .editor
1318 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1319 {
1320 return None;
1321 }
1322
1323 let workspace = self
1324 .editor
1325 .read(cx)
1326 .workspace
1327 .as_ref()
1328 .map(|(w, _)| w.clone());
1329
1330 let display_point = DisplayPoint::new(display_row, 0);
1331 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1332
1333 let blame = self.editor.read(cx).blame.clone()?;
1334 let blame_entry = blame
1335 .update(cx, |blame, cx| {
1336 blame.blame_for_rows([Some(buffer_row)], cx).next()
1337 })
1338 .flatten()?;
1339
1340 let mut element =
1341 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1342
1343 let start_y = content_origin.y
1344 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1345
1346 let start_x = {
1347 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1348
1349 let line_end = if let Some(crease_trailer) = crease_trailer {
1350 crease_trailer.bounds.right()
1351 } else {
1352 content_origin.x - scroll_pixel_position.x + line_layout.width
1353 };
1354 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1355
1356 let min_column_in_pixels = ProjectSettings::get_global(cx)
1357 .git
1358 .inline_blame
1359 .and_then(|settings| settings.min_column)
1360 .map(|col| self.column_pixels(col as usize, cx))
1361 .unwrap_or(px(0.));
1362 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1363
1364 cmp::max(padded_line_end, min_start)
1365 };
1366
1367 let absolute_offset = point(start_x, start_y);
1368 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1369
1370 Some(element)
1371 }
1372
1373 #[allow(clippy::too_many_arguments)]
1374 fn layout_blame_entries(
1375 &self,
1376 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1377 em_width: Pixels,
1378 scroll_position: gpui::Point<f32>,
1379 line_height: Pixels,
1380 gutter_hitbox: &Hitbox,
1381 max_width: Option<Pixels>,
1382 cx: &mut WindowContext,
1383 ) -> Option<Vec<AnyElement>> {
1384 if !self
1385 .editor
1386 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1387 {
1388 return None;
1389 }
1390
1391 let blame = self.editor.read(cx).blame.clone()?;
1392 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1393 blame.blame_for_rows(buffer_rows, cx).collect()
1394 });
1395
1396 let width = if let Some(max_width) = max_width {
1397 AvailableSpace::Definite(max_width)
1398 } else {
1399 AvailableSpace::MaxContent
1400 };
1401 let scroll_top = scroll_position.y * line_height;
1402 let start_x = em_width * 1;
1403
1404 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1405
1406 let shaped_lines = blamed_rows
1407 .into_iter()
1408 .enumerate()
1409 .flat_map(|(ix, blame_entry)| {
1410 if let Some(blame_entry) = blame_entry {
1411 let mut element = render_blame_entry(
1412 ix,
1413 &blame,
1414 blame_entry,
1415 &self.style,
1416 &mut last_used_color,
1417 self.editor.clone(),
1418 cx,
1419 );
1420
1421 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1422 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1423
1424 element.prepaint_as_root(
1425 absolute_offset,
1426 size(width, AvailableSpace::MinContent),
1427 cx,
1428 );
1429
1430 Some(element)
1431 } else {
1432 None
1433 }
1434 })
1435 .collect();
1436
1437 Some(shaped_lines)
1438 }
1439
1440 #[allow(clippy::too_many_arguments)]
1441 fn layout_indent_guides(
1442 &self,
1443 content_origin: gpui::Point<Pixels>,
1444 text_origin: gpui::Point<Pixels>,
1445 visible_buffer_range: Range<MultiBufferRow>,
1446 scroll_pixel_position: gpui::Point<Pixels>,
1447 line_height: Pixels,
1448 snapshot: &DisplaySnapshot,
1449 cx: &mut WindowContext,
1450 ) -> Option<Vec<IndentGuideLayout>> {
1451 let indent_guides = self.editor.update(cx, |editor, cx| {
1452 editor.indent_guides(visible_buffer_range, snapshot, cx)
1453 })?;
1454
1455 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1456 editor
1457 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1458 .unwrap_or_default()
1459 });
1460
1461 Some(
1462 indent_guides
1463 .into_iter()
1464 .enumerate()
1465 .filter_map(|(i, indent_guide)| {
1466 let single_indent_width =
1467 self.column_pixels(indent_guide.tab_size as usize, cx);
1468 let total_width = single_indent_width * indent_guide.depth as f32;
1469 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1470 if start_x >= text_origin.x {
1471 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1472 indent_guide.multibuffer_row_range.clone(),
1473 line_height,
1474 snapshot,
1475 );
1476
1477 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1478
1479 Some(IndentGuideLayout {
1480 origin: point(start_x, start_y),
1481 length,
1482 single_indent_width,
1483 depth: indent_guide.depth,
1484 active: active_indent_guide_indices.contains(&i),
1485 settings: indent_guide.settings,
1486 })
1487 } else {
1488 None
1489 }
1490 })
1491 .collect(),
1492 )
1493 }
1494
1495 fn calculate_indent_guide_bounds(
1496 row_range: Range<MultiBufferRow>,
1497 line_height: Pixels,
1498 snapshot: &DisplaySnapshot,
1499 ) -> (gpui::Pixels, gpui::Pixels) {
1500 let start_point = Point::new(row_range.start.0, 0);
1501 let end_point = Point::new(row_range.end.0, 0);
1502
1503 let row_range = start_point.to_display_point(snapshot).row()
1504 ..end_point.to_display_point(snapshot).row();
1505
1506 let mut prev_line = start_point;
1507 prev_line.row = prev_line.row.saturating_sub(1);
1508 let prev_line = prev_line.to_display_point(snapshot).row();
1509
1510 let mut cons_line = end_point;
1511 cons_line.row += 1;
1512 let cons_line = cons_line.to_display_point(snapshot).row();
1513
1514 let mut offset_y = row_range.start.0 as f32 * line_height;
1515 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1516
1517 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1518 if row_range.end == cons_line {
1519 length += line_height;
1520 }
1521
1522 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1523 // we want to extend the indent guide to the start of the block.
1524 let mut block_height = 0;
1525 let mut block_offset = 0;
1526 let mut found_excerpt_header = false;
1527 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1528 if matches!(block, Block::ExcerptHeader { .. }) {
1529 found_excerpt_header = true;
1530 break;
1531 }
1532 block_offset += block.height();
1533 block_height += block.height();
1534 }
1535 if !found_excerpt_header {
1536 offset_y -= block_offset as f32 * line_height;
1537 length += block_height as f32 * line_height;
1538 }
1539
1540 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1541 // we want to ensure that the indent guide stops before the excerpt header.
1542 let mut block_height = 0;
1543 let mut found_excerpt_header = false;
1544 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1545 if matches!(block, Block::ExcerptHeader { .. }) {
1546 found_excerpt_header = true;
1547 }
1548 block_height += block.height();
1549 }
1550 if found_excerpt_header {
1551 length -= block_height as f32 * line_height;
1552 }
1553
1554 (offset_y, length)
1555 }
1556
1557 #[allow(clippy::too_many_arguments)]
1558 fn layout_run_indicators(
1559 &self,
1560 line_height: Pixels,
1561 scroll_pixel_position: gpui::Point<Pixels>,
1562 gutter_dimensions: &GutterDimensions,
1563 gutter_hitbox: &Hitbox,
1564 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1565 snapshot: &EditorSnapshot,
1566 cx: &mut WindowContext,
1567 ) -> Vec<AnyElement> {
1568 self.editor.update(cx, |editor, cx| {
1569 let active_task_indicator_row =
1570 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1571 deployed_from_indicator,
1572 actions,
1573 ..
1574 })) = editor.context_menu.read().as_ref()
1575 {
1576 actions
1577 .tasks
1578 .as_ref()
1579 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1580 .or_else(|| *deployed_from_indicator)
1581 } else {
1582 None
1583 };
1584 editor
1585 .tasks
1586 .iter()
1587 .filter_map(|(_, tasks)| {
1588 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1589 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1590 if snapshot.is_line_folded(multibuffer_row) {
1591 return None;
1592 }
1593 let display_row = multibuffer_point.to_display_point(snapshot).row();
1594 let button = editor.render_run_indicator(
1595 &self.style,
1596 Some(display_row) == active_task_indicator_row,
1597 display_row,
1598 cx,
1599 );
1600
1601 let button = prepaint_gutter_button(
1602 button,
1603 display_row,
1604 line_height,
1605 gutter_dimensions,
1606 scroll_pixel_position,
1607 gutter_hitbox,
1608 rows_with_hunk_bounds,
1609 cx,
1610 );
1611 Some(button)
1612 })
1613 .collect_vec()
1614 })
1615 }
1616
1617 #[allow(clippy::too_many_arguments)]
1618 fn layout_code_actions_indicator(
1619 &self,
1620 line_height: Pixels,
1621 newest_selection_head: DisplayPoint,
1622 scroll_pixel_position: gpui::Point<Pixels>,
1623 gutter_dimensions: &GutterDimensions,
1624 gutter_hitbox: &Hitbox,
1625 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1626 cx: &mut WindowContext,
1627 ) -> Option<AnyElement> {
1628 let mut active = false;
1629 let mut button = None;
1630 let row = newest_selection_head.row();
1631 self.editor.update(cx, |editor, cx| {
1632 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1633 deployed_from_indicator,
1634 ..
1635 })) = editor.context_menu.read().as_ref()
1636 {
1637 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1638 };
1639 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1640 });
1641
1642 let button = prepaint_gutter_button(
1643 button?,
1644 row,
1645 line_height,
1646 gutter_dimensions,
1647 scroll_pixel_position,
1648 gutter_hitbox,
1649 rows_with_hunk_bounds,
1650 cx,
1651 );
1652
1653 Some(button)
1654 }
1655
1656 fn get_participant_color(
1657 participant_index: Option<ParticipantIndex>,
1658 cx: &WindowContext,
1659 ) -> PlayerColor {
1660 if let Some(index) = participant_index {
1661 cx.theme().players().color_for_participant(index.0)
1662 } else {
1663 cx.theme().players().absent()
1664 }
1665 }
1666
1667 fn calculate_relative_line_numbers(
1668 &self,
1669 snapshot: &EditorSnapshot,
1670 rows: &Range<DisplayRow>,
1671 relative_to: Option<DisplayRow>,
1672 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1673 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1674 let Some(relative_to) = relative_to else {
1675 return relative_rows;
1676 };
1677
1678 let start = rows.start.min(relative_to);
1679 let end = rows.end.max(relative_to);
1680
1681 let buffer_rows = snapshot
1682 .buffer_rows(start)
1683 .take(1 + end.minus(start) as usize)
1684 .collect::<Vec<_>>();
1685
1686 let head_idx = relative_to.minus(start);
1687 let mut delta = 1;
1688 let mut i = head_idx + 1;
1689 while i < buffer_rows.len() as u32 {
1690 if buffer_rows[i as usize].is_some() {
1691 if rows.contains(&DisplayRow(i + start.0)) {
1692 relative_rows.insert(DisplayRow(i + start.0), delta);
1693 }
1694 delta += 1;
1695 }
1696 i += 1;
1697 }
1698 delta = 1;
1699 i = head_idx.min(buffer_rows.len() as u32 - 1);
1700 while i > 0 && buffer_rows[i as usize].is_none() {
1701 i -= 1;
1702 }
1703
1704 while i > 0 {
1705 i -= 1;
1706 if buffer_rows[i as usize].is_some() {
1707 if rows.contains(&DisplayRow(i + start.0)) {
1708 relative_rows.insert(DisplayRow(i + start.0), delta);
1709 }
1710 delta += 1;
1711 }
1712 }
1713
1714 relative_rows
1715 }
1716
1717 fn layout_line_numbers(
1718 &self,
1719 rows: Range<DisplayRow>,
1720 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1721 active_rows: &BTreeMap<DisplayRow, bool>,
1722 newest_selection_head: Option<DisplayPoint>,
1723 snapshot: &EditorSnapshot,
1724 cx: &mut WindowContext,
1725 ) -> Vec<Option<ShapedLine>> {
1726 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
1727 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
1728 });
1729 if !include_line_numbers {
1730 return Vec::new();
1731 }
1732
1733 let editor = self.editor.read(cx);
1734 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1735 let newest = editor.selections.newest::<Point>(cx);
1736 SelectionLayout::new(
1737 newest,
1738 editor.selections.line_mode,
1739 editor.cursor_shape,
1740 &snapshot.display_snapshot,
1741 true,
1742 true,
1743 None,
1744 )
1745 .head
1746 });
1747 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1748
1749 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1750 let relative_to = if is_relative {
1751 Some(newest_selection_head.row())
1752 } else {
1753 None
1754 };
1755 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
1756 let mut line_number = String::new();
1757 buffer_rows
1758 .into_iter()
1759 .enumerate()
1760 .map(|(ix, multibuffer_row)| {
1761 let multibuffer_row = multibuffer_row?;
1762 let display_row = DisplayRow(rows.start.0 + ix as u32);
1763 let color = if active_rows.contains_key(&display_row) {
1764 cx.theme().colors().editor_active_line_number
1765 } else {
1766 cx.theme().colors().editor_line_number
1767 };
1768 line_number.clear();
1769 let default_number = multibuffer_row.0 + 1;
1770 let number = relative_rows
1771 .get(&DisplayRow(ix as u32 + rows.start.0))
1772 .unwrap_or(&default_number);
1773 write!(&mut line_number, "{number}").unwrap();
1774 let run = TextRun {
1775 len: line_number.len(),
1776 font: self.style.text.font(),
1777 color,
1778 background_color: None,
1779 underline: None,
1780 strikethrough: None,
1781 };
1782 let shaped_line = cx
1783 .text_system()
1784 .shape_line(line_number.clone().into(), font_size, &[run])
1785 .unwrap();
1786 Some(shaped_line)
1787 })
1788 .collect()
1789 }
1790
1791 fn layout_gutter_fold_toggles(
1792 &self,
1793 rows: Range<DisplayRow>,
1794 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1795 active_rows: &BTreeMap<DisplayRow, bool>,
1796 snapshot: &EditorSnapshot,
1797 cx: &mut WindowContext,
1798 ) -> Vec<Option<AnyElement>> {
1799 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
1800 && snapshot.mode == EditorMode::Full
1801 && self.editor.read(cx).is_singleton(cx);
1802 if include_fold_statuses {
1803 buffer_rows
1804 .into_iter()
1805 .enumerate()
1806 .map(|(ix, row)| {
1807 if let Some(multibuffer_row) = row {
1808 let display_row = DisplayRow(rows.start.0 + ix as u32);
1809 let active = active_rows.contains_key(&display_row);
1810 snapshot.render_fold_toggle(
1811 multibuffer_row,
1812 active,
1813 self.editor.clone(),
1814 cx,
1815 )
1816 } else {
1817 None
1818 }
1819 })
1820 .collect()
1821 } else {
1822 Vec::new()
1823 }
1824 }
1825
1826 fn layout_crease_trailers(
1827 &self,
1828 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1829 snapshot: &EditorSnapshot,
1830 cx: &mut WindowContext,
1831 ) -> Vec<Option<AnyElement>> {
1832 buffer_rows
1833 .into_iter()
1834 .map(|row| {
1835 if let Some(multibuffer_row) = row {
1836 snapshot.render_crease_trailer(multibuffer_row, cx)
1837 } else {
1838 None
1839 }
1840 })
1841 .collect()
1842 }
1843
1844 fn layout_lines(
1845 rows: Range<DisplayRow>,
1846 line_number_layouts: &[Option<ShapedLine>],
1847 snapshot: &EditorSnapshot,
1848 style: &EditorStyle,
1849 cx: &mut WindowContext,
1850 ) -> Vec<LineWithInvisibles> {
1851 if rows.start >= rows.end {
1852 return Vec::new();
1853 }
1854
1855 // Show the placeholder when the editor is empty
1856 if snapshot.is_empty() {
1857 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1858 let placeholder_color = cx.theme().colors().text_placeholder;
1859 let placeholder_text = snapshot.placeholder_text();
1860
1861 let placeholder_lines = placeholder_text
1862 .as_ref()
1863 .map_or("", AsRef::as_ref)
1864 .split('\n')
1865 .skip(rows.start.0 as usize)
1866 .chain(iter::repeat(""))
1867 .take(rows.len());
1868 placeholder_lines
1869 .filter_map(move |line| {
1870 let run = TextRun {
1871 len: line.len(),
1872 font: style.text.font(),
1873 color: placeholder_color,
1874 background_color: None,
1875 underline: Default::default(),
1876 strikethrough: None,
1877 };
1878 cx.text_system()
1879 .shape_line(line.to_string().into(), font_size, &[run])
1880 .log_err()
1881 })
1882 .map(|line| LineWithInvisibles {
1883 width: line.width,
1884 len: line.len,
1885 fragments: smallvec![LineFragment::Text(line)],
1886 invisibles: Vec::new(),
1887 font_size,
1888 })
1889 .collect()
1890 } else {
1891 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
1892 LineWithInvisibles::from_chunks(
1893 chunks,
1894 &style.text,
1895 MAX_LINE_LEN,
1896 rows.len(),
1897 line_number_layouts,
1898 snapshot.mode,
1899 cx,
1900 )
1901 }
1902 }
1903
1904 fn prepaint_lines(
1905 &self,
1906 start_row: DisplayRow,
1907 line_layouts: &mut [LineWithInvisibles],
1908 line_height: Pixels,
1909 scroll_pixel_position: gpui::Point<Pixels>,
1910 content_origin: gpui::Point<Pixels>,
1911 cx: &mut WindowContext,
1912 ) -> SmallVec<[AnyElement; 1]> {
1913 let mut line_elements = SmallVec::new();
1914 for (ix, line) in line_layouts.iter_mut().enumerate() {
1915 let row = start_row + DisplayRow(ix as u32);
1916 line.prepaint(
1917 line_height,
1918 scroll_pixel_position,
1919 row,
1920 content_origin,
1921 &mut line_elements,
1922 cx,
1923 );
1924 }
1925 line_elements
1926 }
1927
1928 #[allow(clippy::too_many_arguments)]
1929 fn render_block(
1930 &self,
1931 block: &Block,
1932 available_space: Size<AvailableSpace>,
1933 block_id: BlockId,
1934 block_row_start: DisplayRow,
1935 snapshot: &EditorSnapshot,
1936 text_x: Pixels,
1937 rows: &Range<DisplayRow>,
1938 line_layouts: &[LineWithInvisibles],
1939 gutter_dimensions: &GutterDimensions,
1940 line_height: Pixels,
1941 em_width: Pixels,
1942 text_hitbox: &Hitbox,
1943 scroll_width: &mut Pixels,
1944 cx: &mut WindowContext,
1945 ) -> (AnyElement, Size<Pixels>) {
1946 let mut element = match block {
1947 Block::Custom(block) => {
1948 let align_to = block
1949 .position()
1950 .to_point(&snapshot.buffer_snapshot)
1951 .to_display_point(snapshot);
1952 let anchor_x = text_x
1953 + if rows.contains(&align_to.row()) {
1954 line_layouts[align_to.row().minus(rows.start) as usize]
1955 .x_for_index(align_to.column() as usize)
1956 } else {
1957 layout_line(align_to.row(), snapshot, &self.style, cx)
1958 .x_for_index(align_to.column() as usize)
1959 };
1960
1961 div()
1962 .size_full()
1963 .child(block.render(&mut BlockContext {
1964 context: cx,
1965 anchor_x,
1966 gutter_dimensions,
1967 line_height,
1968 em_width,
1969 block_id,
1970 max_width: text_hitbox.size.width.max(*scroll_width),
1971 editor_style: &self.style,
1972 }))
1973 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
1974 .into_any_element()
1975 }
1976
1977 Block::ExcerptHeader {
1978 buffer,
1979 range,
1980 starts_new_buffer,
1981 height,
1982 id,
1983 show_excerpt_controls,
1984 ..
1985 } => {
1986 let include_root = self
1987 .editor
1988 .read(cx)
1989 .project
1990 .as_ref()
1991 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1992 .unwrap_or_default();
1993
1994 #[derive(Clone)]
1995 struct JumpData {
1996 position: Point,
1997 anchor: text::Anchor,
1998 path: ProjectPath,
1999 line_offset_from_top: u32,
2000 }
2001
2002 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
2003 let jump_path = ProjectPath {
2004 worktree_id: file.worktree_id(cx),
2005 path: file.path.clone(),
2006 };
2007 let jump_anchor = range
2008 .primary
2009 .as_ref()
2010 .map_or(range.context.start, |primary| primary.start);
2011
2012 let excerpt_start = range.context.start;
2013 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2014 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
2015 0
2016 } else {
2017 let excerpt_start_row =
2018 language::ToPoint::to_point(&jump_anchor, buffer).row;
2019 jump_position.row - excerpt_start_row
2020 };
2021
2022 let line_offset_from_top =
2023 block_row_start.0 + *height as u32 + offset_from_excerpt_start
2024 - snapshot
2025 .scroll_anchor
2026 .scroll_position(&snapshot.display_snapshot)
2027 .y as u32;
2028
2029 JumpData {
2030 position: jump_position,
2031 anchor: jump_anchor,
2032 path: jump_path,
2033 line_offset_from_top,
2034 }
2035 });
2036
2037 let icon_offset = gutter_dimensions.width
2038 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2039
2040 let element = if *starts_new_buffer {
2041 let path = buffer.resolve_file_path(cx, include_root);
2042 let mut filename = None;
2043 let mut parent_path = None;
2044 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2045 if let Some(path) = path {
2046 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2047 parent_path = path
2048 .parent()
2049 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2050 }
2051
2052 let header_padding = px(6.0);
2053
2054 v_flex()
2055 .id(("path excerpt header", EntityId::from(block_id)))
2056 .size_full()
2057 .p(header_padding)
2058 .child(
2059 h_flex()
2060 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2061 .id("path header block")
2062 .pl(gpui::px(12.))
2063 .pr(gpui::px(8.))
2064 .rounded_md()
2065 .shadow_md()
2066 .border_1()
2067 .border_color(cx.theme().colors().border)
2068 .bg(cx.theme().colors().editor_subheader_background)
2069 .justify_between()
2070 .hover(|style| style.bg(cx.theme().colors().element_hover))
2071 .child(
2072 h_flex().gap_3().child(
2073 h_flex()
2074 .gap_2()
2075 .child(
2076 filename
2077 .map(SharedString::from)
2078 .unwrap_or_else(|| "untitled".into()),
2079 )
2080 .when_some(parent_path, |then, path| {
2081 then.child(
2082 div()
2083 .child(path)
2084 .text_color(cx.theme().colors().text_muted),
2085 )
2086 }),
2087 ),
2088 )
2089 .when_some(jump_data.clone(), |el, jump_data| {
2090 el.child(Icon::new(IconName::ArrowUpRight))
2091 .cursor_pointer()
2092 .tooltip(|cx| {
2093 Tooltip::for_action("Jump to File", &OpenExcerpts, cx)
2094 })
2095 .on_mouse_down(MouseButton::Left, |_, cx| {
2096 cx.stop_propagation()
2097 })
2098 .on_click(cx.listener_for(&self.editor, {
2099 move |editor, _, cx| {
2100 editor.jump(
2101 jump_data.path.clone(),
2102 jump_data.position,
2103 jump_data.anchor,
2104 jump_data.line_offset_from_top,
2105 cx,
2106 );
2107 }
2108 }))
2109 }),
2110 )
2111 .children(show_excerpt_controls.then(|| {
2112 h_flex()
2113 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.333)))
2114 .pt_1()
2115 .justify_end()
2116 .flex_none()
2117 .w(icon_offset - header_padding)
2118 .child(
2119 ButtonLike::new("expand-icon")
2120 .style(ButtonStyle::Transparent)
2121 .child(
2122 svg()
2123 .path(IconName::ArrowUpFromLine.path())
2124 .size(IconSize::XSmall.rems())
2125 .text_color(cx.theme().colors().editor_line_number)
2126 .group("")
2127 .hover(|style| {
2128 style.text_color(
2129 cx.theme()
2130 .colors()
2131 .editor_active_line_number,
2132 )
2133 }),
2134 )
2135 .on_click(cx.listener_for(&self.editor, {
2136 let id = *id;
2137 move |editor, _, cx| {
2138 editor.expand_excerpt(
2139 id,
2140 multi_buffer::ExpandExcerptDirection::Up,
2141 cx,
2142 );
2143 }
2144 }))
2145 .tooltip({
2146 move |cx| {
2147 Tooltip::for_action(
2148 "Expand Excerpt",
2149 &ExpandExcerpts { lines: 0 },
2150 cx,
2151 )
2152 }
2153 }),
2154 )
2155 }))
2156 } else {
2157 v_flex()
2158 .id(("excerpt header", EntityId::from(block_id)))
2159 .size_full()
2160 .child(
2161 div()
2162 .flex()
2163 .v_flex()
2164 .justify_start()
2165 .id("jump to collapsed context")
2166 .w(relative(1.0))
2167 .h_full()
2168 .child(
2169 div()
2170 .h_px()
2171 .w_full()
2172 .bg(cx.theme().colors().border_variant)
2173 .group_hover("excerpt-jump-action", |style| {
2174 style.bg(cx.theme().colors().border)
2175 }),
2176 ),
2177 )
2178 .child(
2179 h_flex()
2180 .justify_end()
2181 .flex_none()
2182 .w(icon_offset)
2183 .h_full()
2184 .child(
2185 show_excerpt_controls
2186 .then(|| {
2187 ButtonLike::new("expand-icon")
2188 .style(ButtonStyle::Transparent)
2189 .child(
2190 svg()
2191 .path(IconName::ArrowUpFromLine.path())
2192 .size(IconSize::XSmall.rems())
2193 .text_color(
2194 cx.theme().colors().editor_line_number,
2195 )
2196 .group("")
2197 .hover(|style| {
2198 style.text_color(
2199 cx.theme()
2200 .colors()
2201 .editor_active_line_number,
2202 )
2203 }),
2204 )
2205 .on_click(cx.listener_for(&self.editor, {
2206 let id = *id;
2207 move |editor, _, cx| {
2208 editor.expand_excerpt(
2209 id,
2210 multi_buffer::ExpandExcerptDirection::Up,
2211 cx,
2212 );
2213 }
2214 }))
2215 .tooltip({
2216 move |cx| {
2217 Tooltip::for_action(
2218 "Expand Excerpt",
2219 &ExpandExcerpts { lines: 0 },
2220 cx,
2221 )
2222 }
2223 })
2224 })
2225 .unwrap_or_else(|| {
2226 ButtonLike::new("jump-icon")
2227 .style(ButtonStyle::Transparent)
2228 .child(
2229 svg()
2230 .path(IconName::ArrowUpRight.path())
2231 .size(IconSize::XSmall.rems())
2232 .text_color(
2233 cx.theme().colors().border_variant,
2234 )
2235 .group("excerpt-jump-action")
2236 .group_hover(
2237 "excerpt-jump-action",
2238 |style| {
2239 style.text_color(
2240 cx.theme().colors().border,
2241 )
2242 },
2243 ),
2244 )
2245 .when_some(jump_data.clone(), |this, jump_data| {
2246 this.on_click(cx.listener_for(&self.editor, {
2247 let path = jump_data.path.clone();
2248 move |editor, _, cx| {
2249 cx.stop_propagation();
2250
2251 editor.jump(
2252 path.clone(),
2253 jump_data.position,
2254 jump_data.anchor,
2255 jump_data.line_offset_from_top,
2256 cx,
2257 );
2258 }
2259 }))
2260 .tooltip(move |cx| {
2261 Tooltip::for_action(
2262 format!(
2263 "Jump to {}:L{}",
2264 jump_data.path.path.display(),
2265 jump_data.position.row + 1
2266 ),
2267 &OpenExcerpts,
2268 cx,
2269 )
2270 })
2271 })
2272 }),
2273 ),
2274 )
2275 .group("excerpt-jump-action")
2276 .cursor_pointer()
2277 .when_some(jump_data.clone(), |this, jump_data| {
2278 this.on_click(cx.listener_for(&self.editor, {
2279 let path = jump_data.path.clone();
2280 move |editor, _, cx| {
2281 cx.stop_propagation();
2282
2283 editor.jump(
2284 path.clone(),
2285 jump_data.position,
2286 jump_data.anchor,
2287 jump_data.line_offset_from_top,
2288 cx,
2289 );
2290 }
2291 }))
2292 .tooltip(move |cx| {
2293 Tooltip::for_action(
2294 format!(
2295 "Jump to {}:L{}",
2296 jump_data.path.path.display(),
2297 jump_data.position.row + 1
2298 ),
2299 &OpenExcerpts,
2300 cx,
2301 )
2302 })
2303 })
2304 };
2305 element.into_any()
2306 }
2307
2308 Block::ExcerptFooter { id, .. } => {
2309 let element = v_flex()
2310 .id(("excerpt footer", EntityId::from(block_id)))
2311 .size_full()
2312 .child(
2313 h_flex()
2314 .justify_end()
2315 .flex_none()
2316 .w(gutter_dimensions.width
2317 - (gutter_dimensions.left_padding + gutter_dimensions.margin))
2318 .h_full()
2319 .child(
2320 ButtonLike::new("expand-icon")
2321 .style(ButtonStyle::Transparent)
2322 .child(
2323 svg()
2324 .path(IconName::ArrowDownFromLine.path())
2325 .size(IconSize::XSmall.rems())
2326 .text_color(cx.theme().colors().editor_line_number)
2327 .group("")
2328 .hover(|style| {
2329 style.text_color(
2330 cx.theme().colors().editor_active_line_number,
2331 )
2332 }),
2333 )
2334 .on_click(cx.listener_for(&self.editor, {
2335 let id = *id;
2336 move |editor, _, cx| {
2337 editor.expand_excerpt(
2338 id,
2339 multi_buffer::ExpandExcerptDirection::Down,
2340 cx,
2341 );
2342 }
2343 }))
2344 .tooltip({
2345 move |cx| {
2346 Tooltip::for_action(
2347 "Expand Excerpt",
2348 &ExpandExcerpts { lines: 0 },
2349 cx,
2350 )
2351 }
2352 }),
2353 ),
2354 );
2355 element.into_any()
2356 }
2357 };
2358
2359 let size = element.layout_as_root(available_space, cx);
2360 (element, size)
2361 }
2362
2363 #[allow(clippy::too_many_arguments)]
2364 fn render_blocks(
2365 &self,
2366 rows: Range<DisplayRow>,
2367 snapshot: &EditorSnapshot,
2368 hitbox: &Hitbox,
2369 text_hitbox: &Hitbox,
2370 scroll_width: &mut Pixels,
2371 gutter_dimensions: &GutterDimensions,
2372 em_width: Pixels,
2373 text_x: Pixels,
2374 line_height: Pixels,
2375 line_layouts: &[LineWithInvisibles],
2376 cx: &mut WindowContext,
2377 ) -> Vec<BlockLayout> {
2378 let (fixed_blocks, non_fixed_blocks) = snapshot
2379 .blocks_in_range(rows.clone())
2380 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2381
2382 let mut focused_block = self
2383 .editor
2384 .update(cx, |editor, _| editor.take_focused_block());
2385 let mut fixed_block_max_width = Pixels::ZERO;
2386 let mut blocks = Vec::new();
2387 for (row, block) in fixed_blocks {
2388 let available_space = size(
2389 AvailableSpace::MinContent,
2390 AvailableSpace::Definite(block.height() as f32 * line_height),
2391 );
2392 let block_id = block.id();
2393
2394 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2395 focused_block = None;
2396 }
2397
2398 let (element, element_size) = self.render_block(
2399 block,
2400 available_space,
2401 block_id,
2402 row,
2403 snapshot,
2404 text_x,
2405 &rows,
2406 line_layouts,
2407 gutter_dimensions,
2408 line_height,
2409 em_width,
2410 text_hitbox,
2411 scroll_width,
2412 cx,
2413 );
2414 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2415 blocks.push(BlockLayout {
2416 id: block_id,
2417 row,
2418 element,
2419 available_space,
2420 style: BlockStyle::Fixed,
2421 });
2422 }
2423 for (row, block) in non_fixed_blocks {
2424 let style = block.style();
2425 let width = match style {
2426 BlockStyle::Sticky => hitbox.size.width,
2427 BlockStyle::Flex => hitbox
2428 .size
2429 .width
2430 .max(fixed_block_max_width)
2431 .max(gutter_dimensions.width + *scroll_width),
2432 BlockStyle::Fixed => unreachable!(),
2433 };
2434 let available_space = size(
2435 AvailableSpace::Definite(width),
2436 AvailableSpace::Definite(block.height() as f32 * line_height),
2437 );
2438 let block_id = block.id();
2439
2440 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2441 focused_block = None;
2442 }
2443
2444 let (element, _) = self.render_block(
2445 block,
2446 available_space,
2447 block_id,
2448 row,
2449 snapshot,
2450 text_x,
2451 &rows,
2452 line_layouts,
2453 gutter_dimensions,
2454 line_height,
2455 em_width,
2456 text_hitbox,
2457 scroll_width,
2458 cx,
2459 );
2460 blocks.push(BlockLayout {
2461 id: block_id,
2462 row,
2463 element,
2464 available_space,
2465 style,
2466 });
2467 }
2468
2469 if let Some(focused_block) = focused_block {
2470 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2471 if focus_handle.is_focused(cx) {
2472 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2473 let style = block.style();
2474 let width = match style {
2475 BlockStyle::Fixed => AvailableSpace::MinContent,
2476 BlockStyle::Flex => AvailableSpace::Definite(
2477 hitbox
2478 .size
2479 .width
2480 .max(fixed_block_max_width)
2481 .max(gutter_dimensions.width + *scroll_width),
2482 ),
2483 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2484 };
2485 let available_space = size(
2486 width,
2487 AvailableSpace::Definite(block.height() as f32 * line_height),
2488 );
2489
2490 let (element, _) = self.render_block(
2491 &block,
2492 available_space,
2493 focused_block.id,
2494 rows.end,
2495 snapshot,
2496 text_x,
2497 &rows,
2498 line_layouts,
2499 gutter_dimensions,
2500 line_height,
2501 em_width,
2502 text_hitbox,
2503 scroll_width,
2504 cx,
2505 );
2506
2507 blocks.push(BlockLayout {
2508 id: block.id(),
2509 row: rows.end,
2510 element,
2511 available_space,
2512 style,
2513 });
2514 }
2515 }
2516 }
2517 }
2518
2519 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2520 blocks
2521 }
2522
2523 fn layout_blocks(
2524 &self,
2525 blocks: &mut Vec<BlockLayout>,
2526 hitbox: &Hitbox,
2527 line_height: Pixels,
2528 scroll_pixel_position: gpui::Point<Pixels>,
2529 cx: &mut WindowContext,
2530 ) {
2531 for block in blocks {
2532 let mut origin = hitbox.origin
2533 + point(
2534 Pixels::ZERO,
2535 block.row.as_f32() * line_height - scroll_pixel_position.y,
2536 );
2537 if !matches!(block.style, BlockStyle::Sticky) {
2538 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2539 }
2540
2541 let focus_handle = block
2542 .element
2543 .prepaint_as_root(origin, block.available_space, cx);
2544
2545 if let Some(focus_handle) = focus_handle {
2546 self.editor.update(cx, |editor, _cx| {
2547 editor.set_focused_block(FocusedBlock {
2548 id: block.id,
2549 focus_handle: focus_handle.downgrade(),
2550 });
2551 });
2552 }
2553 }
2554 }
2555
2556 #[allow(clippy::too_many_arguments)]
2557 fn layout_context_menu(
2558 &self,
2559 line_height: Pixels,
2560 hitbox: &Hitbox,
2561 text_hitbox: &Hitbox,
2562 content_origin: gpui::Point<Pixels>,
2563 start_row: DisplayRow,
2564 scroll_pixel_position: gpui::Point<Pixels>,
2565 line_layouts: &[LineWithInvisibles],
2566 newest_selection_head: DisplayPoint,
2567 gutter_overshoot: Pixels,
2568 cx: &mut WindowContext,
2569 ) -> bool {
2570 let max_height = cmp::min(
2571 12. * line_height,
2572 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
2573 );
2574 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
2575 if editor.context_menu_visible() {
2576 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
2577 } else {
2578 None
2579 }
2580 }) else {
2581 return false;
2582 };
2583
2584 let context_menu_size = context_menu.layout_as_root(AvailableSpace::min_size(), cx);
2585
2586 let (x, y) = match position {
2587 crate::ContextMenuOrigin::EditorPoint(point) => {
2588 let cursor_row_layout = &line_layouts[point.row().minus(start_row) as usize];
2589 let x = cursor_row_layout.x_for_index(point.column() as usize)
2590 - scroll_pixel_position.x;
2591 let y = point.row().next_row().as_f32() * line_height - scroll_pixel_position.y;
2592 (x, y)
2593 }
2594 crate::ContextMenuOrigin::GutterIndicator(row) => {
2595 // 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
2596 // text field.
2597 let x = -gutter_overshoot;
2598 let y = row.next_row().as_f32() * line_height - scroll_pixel_position.y;
2599 (x, y)
2600 }
2601 };
2602
2603 let mut list_origin = content_origin + point(x, y);
2604 let list_width = context_menu_size.width;
2605 let list_height = context_menu_size.height;
2606
2607 // Snap the right edge of the list to the right edge of the window if
2608 // its horizontal bounds overflow.
2609 if list_origin.x + list_width > cx.viewport_size().width {
2610 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
2611 }
2612
2613 if list_origin.y + list_height > text_hitbox.lower_right().y {
2614 list_origin.y -= line_height + list_height;
2615 }
2616
2617 cx.defer_draw(context_menu, list_origin, 1);
2618 true
2619 }
2620
2621 fn layout_mouse_context_menu(
2622 &self,
2623 editor_snapshot: &EditorSnapshot,
2624 visible_range: Range<DisplayRow>,
2625 cx: &mut WindowContext,
2626 ) -> Option<AnyElement> {
2627 let position = self.editor.update(cx, |editor, cx| {
2628 let visible_start_point = editor.display_to_pixel_point(
2629 DisplayPoint::new(visible_range.start, 0),
2630 editor_snapshot,
2631 cx,
2632 )?;
2633 let visible_end_point = editor.display_to_pixel_point(
2634 DisplayPoint::new(visible_range.end, 0),
2635 editor_snapshot,
2636 cx,
2637 )?;
2638
2639 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2640 let (source_display_point, position) = match mouse_context_menu.position {
2641 MenuPosition::PinnedToScreen(point) => (None, point),
2642 MenuPosition::PinnedToEditor {
2643 source,
2644 offset_x,
2645 offset_y,
2646 } => {
2647 let source_display_point = source.to_display_point(editor_snapshot);
2648 let mut source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
2649 source_point.x += offset_x;
2650 source_point.y += offset_y;
2651 (Some(source_display_point), source_point)
2652 }
2653 };
2654
2655 let source_included = source_display_point.map_or(true, |source_display_point| {
2656 visible_range
2657 .to_inclusive()
2658 .contains(&source_display_point.row())
2659 });
2660 let position_included =
2661 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
2662 if !source_included && !position_included {
2663 None
2664 } else {
2665 Some(position)
2666 }
2667 })?;
2668
2669 let mut element = self.editor.update(cx, |editor, _| {
2670 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2671 let context_menu = mouse_context_menu.context_menu.clone();
2672
2673 Some(
2674 deferred(
2675 anchored()
2676 .position(position)
2677 .child(context_menu)
2678 .anchor(AnchorCorner::TopLeft)
2679 .snap_to_window(),
2680 )
2681 .with_priority(1)
2682 .into_any(),
2683 )
2684 })?;
2685
2686 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
2687 Some(element)
2688 }
2689
2690 #[allow(clippy::too_many_arguments)]
2691 fn layout_hover_popovers(
2692 &self,
2693 snapshot: &EditorSnapshot,
2694 hitbox: &Hitbox,
2695 text_hitbox: &Hitbox,
2696 visible_display_row_range: Range<DisplayRow>,
2697 content_origin: gpui::Point<Pixels>,
2698 scroll_pixel_position: gpui::Point<Pixels>,
2699 line_layouts: &[LineWithInvisibles],
2700 line_height: Pixels,
2701 em_width: Pixels,
2702 cx: &mut WindowContext,
2703 ) {
2704 struct MeasuredHoverPopover {
2705 element: AnyElement,
2706 size: Size<Pixels>,
2707 horizontal_offset: Pixels,
2708 }
2709
2710 let max_size = size(
2711 (120. * em_width) // Default size
2712 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2713 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2714 (16. * line_height) // Default size
2715 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2716 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2717 );
2718
2719 let hover_popovers = self.editor.update(cx, |editor, cx| {
2720 editor.hover_state.render(
2721 &snapshot,
2722 &self.style,
2723 visible_display_row_range.clone(),
2724 max_size,
2725 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2726 cx,
2727 )
2728 });
2729 let Some((position, hover_popovers)) = hover_popovers else {
2730 return;
2731 };
2732
2733 // This is safe because we check on layout whether the required row is available
2734 let hovered_row_layout =
2735 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
2736
2737 // Compute Hovered Point
2738 let x =
2739 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
2740 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
2741 let hovered_point = content_origin + point(x, y);
2742
2743 let mut overall_height = Pixels::ZERO;
2744 let mut measured_hover_popovers = Vec::new();
2745 for mut hover_popover in hover_popovers {
2746 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
2747 let horizontal_offset =
2748 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
2749
2750 overall_height += HOVER_POPOVER_GAP + size.height;
2751
2752 measured_hover_popovers.push(MeasuredHoverPopover {
2753 element: hover_popover,
2754 size,
2755 horizontal_offset,
2756 });
2757 }
2758 overall_height += HOVER_POPOVER_GAP;
2759
2760 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
2761 let mut occlusion = div()
2762 .size_full()
2763 .occlude()
2764 .on_mouse_move(|_, cx| cx.stop_propagation())
2765 .into_any_element();
2766 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
2767 cx.defer_draw(occlusion, origin, 2);
2768 }
2769
2770 if hovered_point.y > overall_height {
2771 // There is enough space above. Render popovers above the hovered point
2772 let mut current_y = hovered_point.y;
2773 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2774 let size = popover.size;
2775 let popover_origin = point(
2776 hovered_point.x + popover.horizontal_offset,
2777 current_y - size.height,
2778 );
2779
2780 cx.defer_draw(popover.element, popover_origin, 2);
2781 if position != itertools::Position::Last {
2782 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
2783 draw_occluder(size.width, origin, cx);
2784 }
2785
2786 current_y = popover_origin.y - HOVER_POPOVER_GAP;
2787 }
2788 } else {
2789 // There is not enough space above. Render popovers below the hovered point
2790 let mut current_y = hovered_point.y + line_height;
2791 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2792 let size = popover.size;
2793 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
2794
2795 cx.defer_draw(popover.element, popover_origin, 2);
2796 if position != itertools::Position::Last {
2797 let origin = point(popover_origin.x, popover_origin.y + size.height);
2798 draw_occluder(size.width, origin, cx);
2799 }
2800
2801 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
2802 }
2803 }
2804 }
2805
2806 #[allow(clippy::too_many_arguments)]
2807 fn layout_signature_help(
2808 &self,
2809 hitbox: &Hitbox,
2810 content_origin: gpui::Point<Pixels>,
2811 scroll_pixel_position: gpui::Point<Pixels>,
2812 newest_selection_head: Option<DisplayPoint>,
2813 start_row: DisplayRow,
2814 line_layouts: &[LineWithInvisibles],
2815 line_height: Pixels,
2816 em_width: Pixels,
2817 cx: &mut WindowContext,
2818 ) {
2819 if !self.editor.focus_handle(cx).is_focused(cx) {
2820 return;
2821 }
2822 let Some(newest_selection_head) = newest_selection_head else {
2823 return;
2824 };
2825 let selection_row = newest_selection_head.row();
2826 if selection_row < start_row {
2827 return;
2828 }
2829 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
2830 else {
2831 return;
2832 };
2833
2834 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
2835 - scroll_pixel_position.x
2836 + content_origin.x;
2837 let start_y =
2838 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
2839
2840 let max_size = size(
2841 (120. * em_width) // Default size
2842 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2843 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2844 (16. * line_height) // Default size
2845 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2846 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2847 );
2848
2849 let maybe_element = self.editor.update(cx, |editor, cx| {
2850 if let Some(popover) = editor.signature_help_state.popover_mut() {
2851 let element = popover.render(
2852 &self.style,
2853 max_size,
2854 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2855 cx,
2856 );
2857 Some(element)
2858 } else {
2859 None
2860 }
2861 });
2862 if let Some(mut element) = maybe_element {
2863 let window_size = cx.viewport_size();
2864 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
2865 let mut point = point(start_x, start_y - size.height);
2866
2867 // Adjusting to ensure the popover does not overflow in the X-axis direction.
2868 if point.x + size.width >= window_size.width {
2869 point.x = window_size.width - size.width;
2870 }
2871
2872 cx.defer_draw(element, point, 1)
2873 }
2874 }
2875
2876 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
2877 cx.paint_layer(layout.hitbox.bounds, |cx| {
2878 let scroll_top = layout.position_map.snapshot.scroll_position().y;
2879 let gutter_bg = cx.theme().colors().editor_gutter_background;
2880 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
2881 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
2882
2883 if let EditorMode::Full = layout.mode {
2884 let mut active_rows = layout.active_rows.iter().peekable();
2885 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
2886 let mut end_row = start_row.0;
2887 while active_rows
2888 .peek()
2889 .map_or(false, |(active_row, has_selection)| {
2890 active_row.0 == end_row + 1
2891 && *has_selection == contains_non_empty_selection
2892 })
2893 {
2894 active_rows.next().unwrap();
2895 end_row += 1;
2896 }
2897
2898 if !contains_non_empty_selection {
2899 let highlight_h_range =
2900 match layout.position_map.snapshot.current_line_highlight {
2901 CurrentLineHighlight::Gutter => Some(Range {
2902 start: layout.hitbox.left(),
2903 end: layout.gutter_hitbox.right(),
2904 }),
2905 CurrentLineHighlight::Line => Some(Range {
2906 start: layout.text_hitbox.bounds.left(),
2907 end: layout.text_hitbox.bounds.right(),
2908 }),
2909 CurrentLineHighlight::All => Some(Range {
2910 start: layout.hitbox.left(),
2911 end: layout.hitbox.right(),
2912 }),
2913 CurrentLineHighlight::None => None,
2914 };
2915 if let Some(range) = highlight_h_range {
2916 let active_line_bg = cx.theme().colors().editor_active_line_background;
2917 let bounds = Bounds {
2918 origin: point(
2919 range.start,
2920 layout.hitbox.origin.y
2921 + (start_row.as_f32() - scroll_top)
2922 * layout.position_map.line_height,
2923 ),
2924 size: size(
2925 range.end - range.start,
2926 layout.position_map.line_height
2927 * (end_row - start_row.0 + 1) as f32,
2928 ),
2929 };
2930 cx.paint_quad(fill(bounds, active_line_bg));
2931 }
2932 }
2933 }
2934
2935 let mut paint_highlight =
2936 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
2937 let origin = point(
2938 layout.hitbox.origin.x,
2939 layout.hitbox.origin.y
2940 + (highlight_row_start.as_f32() - scroll_top)
2941 * layout.position_map.line_height,
2942 );
2943 let size = size(
2944 layout.hitbox.size.width,
2945 layout.position_map.line_height
2946 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
2947 );
2948 cx.paint_quad(fill(Bounds { origin, size }, color));
2949 };
2950
2951 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
2952 for (&new_row, &new_color) in &layout.highlighted_rows {
2953 match &mut current_paint {
2954 Some((current_color, current_range)) => {
2955 let current_color = *current_color;
2956 let new_range_started = current_color != new_color
2957 || current_range.end.next_row() != new_row;
2958 if new_range_started {
2959 paint_highlight(
2960 current_range.start,
2961 current_range.end,
2962 current_color,
2963 );
2964 current_paint = Some((new_color, new_row..new_row));
2965 continue;
2966 } else {
2967 current_range.end = current_range.end.next_row();
2968 }
2969 }
2970 None => current_paint = Some((new_color, new_row..new_row)),
2971 };
2972 }
2973 if let Some((color, range)) = current_paint {
2974 paint_highlight(range.start, range.end, color);
2975 }
2976
2977 let scroll_left =
2978 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
2979
2980 for (wrap_position, active) in layout.wrap_guides.iter() {
2981 let x = (layout.text_hitbox.origin.x
2982 + *wrap_position
2983 + layout.position_map.em_width / 2.)
2984 - scroll_left;
2985
2986 let show_scrollbars = layout
2987 .scrollbar_layout
2988 .as_ref()
2989 .map_or(false, |scrollbar| scrollbar.visible);
2990 if x < layout.text_hitbox.origin.x
2991 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
2992 {
2993 continue;
2994 }
2995
2996 let color = if *active {
2997 cx.theme().colors().editor_active_wrap_guide
2998 } else {
2999 cx.theme().colors().editor_wrap_guide
3000 };
3001 cx.paint_quad(fill(
3002 Bounds {
3003 origin: point(x, layout.text_hitbox.origin.y),
3004 size: size(px(1.), layout.text_hitbox.size.height),
3005 },
3006 color,
3007 ));
3008 }
3009 }
3010 })
3011 }
3012
3013 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3014 let Some(indent_guides) = &layout.indent_guides else {
3015 return;
3016 };
3017
3018 let faded_color = |color: Hsla, alpha: f32| {
3019 let mut faded = color;
3020 faded.a = alpha;
3021 faded
3022 };
3023
3024 for indent_guide in indent_guides {
3025 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3026 let settings = indent_guide.settings;
3027
3028 // TODO fixed for now, expose them through themes later
3029 const INDENT_AWARE_ALPHA: f32 = 0.2;
3030 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3031 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3032 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3033
3034 let line_color = match (settings.coloring, indent_guide.active) {
3035 (IndentGuideColoring::Disabled, _) => None,
3036 (IndentGuideColoring::Fixed, false) => {
3037 Some(cx.theme().colors().editor_indent_guide)
3038 }
3039 (IndentGuideColoring::Fixed, true) => {
3040 Some(cx.theme().colors().editor_indent_guide_active)
3041 }
3042 (IndentGuideColoring::IndentAware, false) => {
3043 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3044 }
3045 (IndentGuideColoring::IndentAware, true) => {
3046 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3047 }
3048 };
3049
3050 let background_color = match (settings.background_coloring, indent_guide.active) {
3051 (IndentGuideBackgroundColoring::Disabled, _) => None,
3052 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3053 indent_accent_colors,
3054 INDENT_AWARE_BACKGROUND_ALPHA,
3055 )),
3056 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3057 indent_accent_colors,
3058 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3059 )),
3060 };
3061
3062 let requested_line_width = if indent_guide.active {
3063 settings.active_line_width
3064 } else {
3065 settings.line_width
3066 }
3067 .clamp(1, 10);
3068 let mut line_indicator_width = 0.;
3069 if let Some(color) = line_color {
3070 cx.paint_quad(fill(
3071 Bounds {
3072 origin: indent_guide.origin,
3073 size: size(px(requested_line_width as f32), indent_guide.length),
3074 },
3075 color,
3076 ));
3077 line_indicator_width = requested_line_width as f32;
3078 }
3079
3080 if let Some(color) = background_color {
3081 let width = indent_guide.single_indent_width - px(line_indicator_width);
3082 cx.paint_quad(fill(
3083 Bounds {
3084 origin: point(
3085 indent_guide.origin.x + px(line_indicator_width),
3086 indent_guide.origin.y,
3087 ),
3088 size: size(width, indent_guide.length),
3089 },
3090 color,
3091 ));
3092 }
3093 }
3094 }
3095
3096 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3097 let line_height = layout.position_map.line_height;
3098 let scroll_position = layout.position_map.snapshot.scroll_position();
3099 let scroll_top = scroll_position.y * line_height;
3100
3101 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3102
3103 for (ix, line) in layout.line_numbers.iter().enumerate() {
3104 if let Some(line) = line {
3105 let line_origin = layout.gutter_hitbox.origin
3106 + point(
3107 layout.gutter_hitbox.size.width
3108 - line.width
3109 - layout.gutter_dimensions.right_padding,
3110 ix as f32 * line_height - (scroll_top % line_height),
3111 );
3112
3113 line.paint(line_origin, line_height, cx).log_err();
3114 }
3115 }
3116 }
3117
3118 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
3119 if layout.display_hunks.is_empty() {
3120 return;
3121 }
3122
3123 let line_height = layout.position_map.line_height;
3124 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3125 for (hunk, hitbox) in &layout.display_hunks {
3126 let hunk_to_paint = match hunk {
3127 DisplayDiffHunk::Folded { .. } => {
3128 let hunk_bounds = Self::diff_hunk_bounds(
3129 &layout.position_map.snapshot,
3130 line_height,
3131 layout.gutter_hitbox.bounds,
3132 &hunk,
3133 );
3134 Some((
3135 hunk_bounds,
3136 cx.theme().status().modified,
3137 Corners::all(1. * line_height),
3138 ))
3139 }
3140 DisplayDiffHunk::Unfolded { status, .. } => {
3141 hitbox.as_ref().map(|hunk_hitbox| match status {
3142 DiffHunkStatus::Added => (
3143 hunk_hitbox.bounds,
3144 cx.theme().status().created,
3145 Corners::all(0.05 * line_height),
3146 ),
3147 DiffHunkStatus::Modified => (
3148 hunk_hitbox.bounds,
3149 cx.theme().status().modified,
3150 Corners::all(0.05 * line_height),
3151 ),
3152 DiffHunkStatus::Removed => (
3153 Bounds::new(
3154 point(
3155 hunk_hitbox.origin.x - hunk_hitbox.size.width,
3156 hunk_hitbox.origin.y,
3157 ),
3158 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
3159 ),
3160 cx.theme().status().deleted,
3161 Corners::all(1. * line_height),
3162 ),
3163 })
3164 }
3165 };
3166
3167 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
3168 cx.paint_quad(quad(
3169 hunk_bounds,
3170 corner_radii,
3171 background_color,
3172 Edges::default(),
3173 transparent_black(),
3174 ));
3175 }
3176 }
3177 });
3178 }
3179
3180 pub(super) fn diff_hunk_bounds(
3181 snapshot: &EditorSnapshot,
3182 line_height: Pixels,
3183 gutter_bounds: Bounds<Pixels>,
3184 hunk: &DisplayDiffHunk,
3185 ) -> Bounds<Pixels> {
3186 let scroll_position = snapshot.scroll_position();
3187 let scroll_top = scroll_position.y * line_height;
3188
3189 match hunk {
3190 DisplayDiffHunk::Folded { display_row, .. } => {
3191 let start_y = display_row.as_f32() * line_height - scroll_top;
3192 let end_y = start_y + line_height;
3193
3194 let width = 0.275 * line_height;
3195 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3196 let highlight_size = size(width, end_y - start_y);
3197 Bounds::new(highlight_origin, highlight_size)
3198 }
3199 DisplayDiffHunk::Unfolded {
3200 display_row_range,
3201 status,
3202 ..
3203 } => match status {
3204 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
3205 let start_row = display_row_range.start;
3206 let end_row = display_row_range.end;
3207 // If we're in a multibuffer, row range span might include an
3208 // excerpt header, so if we were to draw the marker straight away,
3209 // the hunk might include the rows of that header.
3210 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
3211 // Instead, we simply check whether the range we're dealing with includes
3212 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
3213 let end_row_in_current_excerpt = snapshot
3214 .blocks_in_range(start_row..end_row)
3215 .find_map(|(start_row, block)| {
3216 if matches!(block, Block::ExcerptHeader { .. }) {
3217 Some(start_row)
3218 } else {
3219 None
3220 }
3221 })
3222 .unwrap_or(end_row);
3223
3224 let start_y = start_row.as_f32() * line_height - scroll_top;
3225 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
3226
3227 let width = 0.275 * line_height;
3228 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3229 let highlight_size = size(width, end_y - start_y);
3230 Bounds::new(highlight_origin, highlight_size)
3231 }
3232 DiffHunkStatus::Removed => {
3233 let row = display_row_range.start;
3234
3235 let offset = line_height / 2.;
3236 let start_y = row.as_f32() * line_height - offset - scroll_top;
3237 let end_y = start_y + line_height;
3238
3239 let width = 0.35 * line_height;
3240 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3241 let highlight_size = size(width, end_y - start_y);
3242 Bounds::new(highlight_origin, highlight_size)
3243 }
3244 },
3245 }
3246 }
3247
3248 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3249 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3250 cx.with_element_namespace("gutter_fold_toggles", |cx| {
3251 for fold_indicator in layout.gutter_fold_toggles.iter_mut().flatten() {
3252 fold_indicator.paint(cx);
3253 }
3254 });
3255
3256 for test_indicator in layout.test_indicators.iter_mut() {
3257 test_indicator.paint(cx);
3258 }
3259 for close_indicator in layout.close_indicators.iter_mut() {
3260 close_indicator.paint(cx);
3261 }
3262
3263 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
3264 indicator.paint(cx);
3265 }
3266 });
3267 }
3268
3269 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3270 for (_, hunk_hitbox) in &layout.display_hunks {
3271 if let Some(hunk_hitbox) = hunk_hitbox {
3272 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
3273 }
3274 }
3275
3276 let show_git_gutter = layout
3277 .position_map
3278 .snapshot
3279 .show_git_diff_gutter
3280 .unwrap_or_else(|| {
3281 matches!(
3282 ProjectSettings::get_global(cx).git.git_gutter,
3283 Some(GitGutterSetting::TrackedFiles)
3284 )
3285 });
3286 if show_git_gutter {
3287 Self::paint_diff_hunks(layout, cx)
3288 }
3289
3290 let highlight_width = 0.275 * layout.position_map.line_height;
3291 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
3292 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3293 for (range, color) in &layout.highlighted_gutter_ranges {
3294 let start_row = if range.start.row() < layout.visible_display_row_range.start {
3295 layout.visible_display_row_range.start - DisplayRow(1)
3296 } else {
3297 range.start.row()
3298 };
3299 let end_row = if range.end.row() > layout.visible_display_row_range.end {
3300 layout.visible_display_row_range.end + DisplayRow(1)
3301 } else {
3302 range.end.row()
3303 };
3304
3305 let start_y = layout.gutter_hitbox.top()
3306 + start_row.0 as f32 * layout.position_map.line_height
3307 - layout.position_map.scroll_pixel_position.y;
3308 let end_y = layout.gutter_hitbox.top()
3309 + (end_row.0 + 1) as f32 * layout.position_map.line_height
3310 - layout.position_map.scroll_pixel_position.y;
3311 let bounds = Bounds::from_corners(
3312 point(layout.gutter_hitbox.left(), start_y),
3313 point(layout.gutter_hitbox.left() + highlight_width, end_y),
3314 );
3315 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
3316 }
3317 });
3318 }
3319
3320 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3321 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
3322 return;
3323 };
3324
3325 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3326 for mut blame_element in blamed_display_rows.into_iter() {
3327 blame_element.paint(cx);
3328 }
3329 })
3330 }
3331
3332 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3333 cx.with_content_mask(
3334 Some(ContentMask {
3335 bounds: layout.text_hitbox.bounds,
3336 }),
3337 |cx| {
3338 let cursor_style = if self
3339 .editor
3340 .read(cx)
3341 .hovered_link_state
3342 .as_ref()
3343 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
3344 {
3345 CursorStyle::PointingHand
3346 } else {
3347 CursorStyle::IBeam
3348 };
3349 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
3350
3351 let invisible_display_ranges = self.paint_highlights(layout, cx);
3352 self.paint_lines(&invisible_display_ranges, layout, cx);
3353 self.paint_redactions(layout, cx);
3354 self.paint_cursors(layout, cx);
3355 self.paint_inline_blame(layout, cx);
3356 cx.with_element_namespace("crease_trailers", |cx| {
3357 for trailer in layout.crease_trailers.iter_mut().flatten() {
3358 trailer.element.paint(cx);
3359 }
3360 });
3361 },
3362 )
3363 }
3364
3365 fn paint_highlights(
3366 &mut self,
3367 layout: &mut EditorLayout,
3368 cx: &mut WindowContext,
3369 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
3370 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3371 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
3372 let line_end_overshoot = 0.15 * layout.position_map.line_height;
3373 for (range, color) in &layout.highlighted_ranges {
3374 self.paint_highlighted_range(
3375 range.clone(),
3376 *color,
3377 Pixels::ZERO,
3378 line_end_overshoot,
3379 layout,
3380 cx,
3381 );
3382 }
3383
3384 let corner_radius = 0.15 * layout.position_map.line_height;
3385
3386 for (player_color, selections) in &layout.selections {
3387 for selection in selections.into_iter() {
3388 self.paint_highlighted_range(
3389 selection.range.clone(),
3390 player_color.selection,
3391 corner_radius,
3392 corner_radius * 2.,
3393 layout,
3394 cx,
3395 );
3396
3397 if selection.is_local && !selection.range.is_empty() {
3398 invisible_display_ranges.push(selection.range.clone());
3399 }
3400 }
3401 }
3402 invisible_display_ranges
3403 })
3404 }
3405
3406 fn paint_lines(
3407 &mut self,
3408 invisible_display_ranges: &[Range<DisplayPoint>],
3409 layout: &mut EditorLayout,
3410 cx: &mut WindowContext,
3411 ) {
3412 let whitespace_setting = self
3413 .editor
3414 .read(cx)
3415 .buffer
3416 .read(cx)
3417 .settings_at(0, cx)
3418 .show_whitespaces;
3419
3420 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
3421 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
3422 line_with_invisibles.draw(
3423 layout,
3424 row,
3425 layout.content_origin,
3426 whitespace_setting,
3427 invisible_display_ranges,
3428 cx,
3429 )
3430 }
3431
3432 for line_element in &mut layout.line_elements {
3433 line_element.paint(cx);
3434 }
3435 }
3436
3437 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3438 if layout.redacted_ranges.is_empty() {
3439 return;
3440 }
3441
3442 let line_end_overshoot = layout.line_end_overshoot();
3443
3444 // A softer than perfect black
3445 let redaction_color = gpui::rgb(0x0e1111);
3446
3447 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3448 for range in layout.redacted_ranges.iter() {
3449 self.paint_highlighted_range(
3450 range.clone(),
3451 redaction_color.into(),
3452 Pixels::ZERO,
3453 line_end_overshoot,
3454 layout,
3455 cx,
3456 );
3457 }
3458 });
3459 }
3460
3461 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3462 for cursor in &mut layout.visible_cursors {
3463 cursor.paint(layout.content_origin, cx);
3464 }
3465 }
3466
3467 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3468 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
3469 return;
3470 };
3471
3472 let thumb_bounds = scrollbar_layout.thumb_bounds();
3473 if scrollbar_layout.visible {
3474 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
3475 cx.paint_quad(quad(
3476 scrollbar_layout.hitbox.bounds,
3477 Corners::default(),
3478 cx.theme().colors().scrollbar_track_background,
3479 Edges {
3480 top: Pixels::ZERO,
3481 right: Pixels::ZERO,
3482 bottom: Pixels::ZERO,
3483 left: ScrollbarLayout::BORDER_WIDTH,
3484 },
3485 cx.theme().colors().scrollbar_track_border,
3486 ));
3487
3488 let fast_markers =
3489 self.collect_fast_scrollbar_markers(layout, scrollbar_layout, cx);
3490 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
3491 self.refresh_slow_scrollbar_markers(layout, scrollbar_layout, cx);
3492
3493 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
3494 for marker in markers.iter().chain(&fast_markers) {
3495 let mut marker = marker.clone();
3496 marker.bounds.origin += scrollbar_layout.hitbox.origin;
3497 cx.paint_quad(marker);
3498 }
3499
3500 cx.paint_quad(quad(
3501 thumb_bounds,
3502 Corners::default(),
3503 cx.theme().colors().scrollbar_thumb_background,
3504 Edges {
3505 top: Pixels::ZERO,
3506 right: Pixels::ZERO,
3507 bottom: Pixels::ZERO,
3508 left: ScrollbarLayout::BORDER_WIDTH,
3509 },
3510 cx.theme().colors().scrollbar_thumb_border,
3511 ));
3512 });
3513 }
3514
3515 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
3516
3517 let row_height = scrollbar_layout.row_height;
3518 let row_range = scrollbar_layout.visible_row_range.clone();
3519
3520 cx.on_mouse_event({
3521 let editor = self.editor.clone();
3522 let hitbox = scrollbar_layout.hitbox.clone();
3523 let mut mouse_position = cx.mouse_position();
3524 move |event: &MouseMoveEvent, phase, cx| {
3525 if phase == DispatchPhase::Capture {
3526 return;
3527 }
3528
3529 editor.update(cx, |editor, cx| {
3530 if event.pressed_button == Some(MouseButton::Left)
3531 && editor.scroll_manager.is_dragging_scrollbar()
3532 {
3533 let y = mouse_position.y;
3534 let new_y = event.position.y;
3535 if (hitbox.top()..hitbox.bottom()).contains(&y) {
3536 let mut position = editor.scroll_position(cx);
3537 position.y += (new_y - y) / row_height;
3538 if position.y < 0.0 {
3539 position.y = 0.0;
3540 }
3541 editor.set_scroll_position(position, cx);
3542 }
3543
3544 cx.stop_propagation();
3545 } else {
3546 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3547 if hitbox.is_hovered(cx) {
3548 editor.scroll_manager.show_scrollbar(cx);
3549 }
3550 }
3551 mouse_position = event.position;
3552 })
3553 }
3554 });
3555
3556 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
3557 cx.on_mouse_event({
3558 let editor = self.editor.clone();
3559 move |_: &MouseUpEvent, phase, cx| {
3560 if phase == DispatchPhase::Capture {
3561 return;
3562 }
3563
3564 editor.update(cx, |editor, cx| {
3565 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3566 cx.stop_propagation();
3567 });
3568 }
3569 });
3570 } else {
3571 cx.on_mouse_event({
3572 let editor = self.editor.clone();
3573 let hitbox = scrollbar_layout.hitbox.clone();
3574 move |event: &MouseDownEvent, phase, cx| {
3575 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
3576 return;
3577 }
3578
3579 editor.update(cx, |editor, cx| {
3580 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
3581
3582 let y = event.position.y;
3583 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
3584 let center_row = ((y - hitbox.top()) / row_height).round() as u32;
3585 let top_row = center_row
3586 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
3587 let mut position = editor.scroll_position(cx);
3588 position.y = top_row as f32;
3589 editor.set_scroll_position(position, cx);
3590 } else {
3591 editor.scroll_manager.show_scrollbar(cx);
3592 }
3593
3594 cx.stop_propagation();
3595 });
3596 }
3597 });
3598 }
3599 }
3600
3601 fn collect_fast_scrollbar_markers(
3602 &self,
3603 layout: &EditorLayout,
3604 scrollbar_layout: &ScrollbarLayout,
3605 cx: &mut WindowContext,
3606 ) -> Vec<PaintQuad> {
3607 const LIMIT: usize = 100;
3608 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
3609 return vec![];
3610 }
3611 let cursor_ranges = layout
3612 .cursors
3613 .iter()
3614 .map(|(point, color)| ColoredRange {
3615 start: point.row(),
3616 end: point.row(),
3617 color: *color,
3618 })
3619 .collect_vec();
3620 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
3621 }
3622
3623 fn refresh_slow_scrollbar_markers(
3624 &self,
3625 layout: &EditorLayout,
3626 scrollbar_layout: &ScrollbarLayout,
3627 cx: &mut WindowContext,
3628 ) {
3629 self.editor.update(cx, |editor, cx| {
3630 if !editor.is_singleton(cx)
3631 || !editor
3632 .scrollbar_marker_state
3633 .should_refresh(scrollbar_layout.hitbox.size)
3634 {
3635 return;
3636 }
3637
3638 let scrollbar_layout = scrollbar_layout.clone();
3639 let background_highlights = editor.background_highlights.clone();
3640 let snapshot = layout.position_map.snapshot.clone();
3641 let theme = cx.theme().clone();
3642 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
3643
3644 editor.scrollbar_marker_state.dirty = false;
3645 editor.scrollbar_marker_state.pending_refresh =
3646 Some(cx.spawn(|editor, mut cx| async move {
3647 let scrollbar_size = scrollbar_layout.hitbox.size;
3648 let scrollbar_markers = cx
3649 .background_executor()
3650 .spawn(async move {
3651 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
3652 let mut marker_quads = Vec::new();
3653 if scrollbar_settings.git_diff {
3654 let marker_row_ranges = snapshot
3655 .buffer_snapshot
3656 .git_diff_hunks_in_range(
3657 MultiBufferRow::MIN..MultiBufferRow::MAX,
3658 )
3659 .map(|hunk| {
3660 let start_display_row =
3661 MultiBufferPoint::new(hunk.associated_range.start.0, 0)
3662 .to_display_point(&snapshot.display_snapshot)
3663 .row();
3664 let mut end_display_row =
3665 MultiBufferPoint::new(hunk.associated_range.end.0, 0)
3666 .to_display_point(&snapshot.display_snapshot)
3667 .row();
3668 if end_display_row != start_display_row {
3669 end_display_row.0 -= 1;
3670 }
3671 let color = match hunk_status(&hunk) {
3672 DiffHunkStatus::Added => theme.status().created,
3673 DiffHunkStatus::Modified => theme.status().modified,
3674 DiffHunkStatus::Removed => theme.status().deleted,
3675 };
3676 ColoredRange {
3677 start: start_display_row,
3678 end: end_display_row,
3679 color,
3680 }
3681 });
3682
3683 marker_quads.extend(
3684 scrollbar_layout
3685 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
3686 );
3687 }
3688
3689 for (background_highlight_id, (_, background_ranges)) in
3690 background_highlights.iter()
3691 {
3692 let is_search_highlights = *background_highlight_id
3693 == TypeId::of::<BufferSearchHighlights>();
3694 let is_symbol_occurrences = *background_highlight_id
3695 == TypeId::of::<DocumentHighlightRead>()
3696 || *background_highlight_id
3697 == TypeId::of::<DocumentHighlightWrite>();
3698 if (is_search_highlights && scrollbar_settings.search_results)
3699 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
3700 {
3701 let mut color = theme.status().info;
3702 if is_symbol_occurrences {
3703 color.fade_out(0.5);
3704 }
3705 let marker_row_ranges =
3706 background_ranges.into_iter().map(|range| {
3707 let display_start = range
3708 .start
3709 .to_display_point(&snapshot.display_snapshot);
3710 let display_end = range
3711 .end
3712 .to_display_point(&snapshot.display_snapshot);
3713 ColoredRange {
3714 start: display_start.row(),
3715 end: display_end.row(),
3716 color,
3717 }
3718 });
3719 marker_quads.extend(
3720 scrollbar_layout
3721 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
3722 );
3723 }
3724 }
3725
3726 if scrollbar_settings.diagnostics {
3727 let diagnostics = snapshot
3728 .buffer_snapshot
3729 .diagnostics_in_range::<_, Point>(
3730 Point::zero()..max_point,
3731 false,
3732 )
3733 // We want to sort by severity, in order to paint the most severe diagnostics last.
3734 .sorted_by_key(|diagnostic| {
3735 std::cmp::Reverse(diagnostic.diagnostic.severity)
3736 });
3737
3738 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
3739 let start_display = diagnostic
3740 .range
3741 .start
3742 .to_display_point(&snapshot.display_snapshot);
3743 let end_display = diagnostic
3744 .range
3745 .end
3746 .to_display_point(&snapshot.display_snapshot);
3747 let color = match diagnostic.diagnostic.severity {
3748 DiagnosticSeverity::ERROR => theme.status().error,
3749 DiagnosticSeverity::WARNING => theme.status().warning,
3750 DiagnosticSeverity::INFORMATION => theme.status().info,
3751 _ => theme.status().hint,
3752 };
3753 ColoredRange {
3754 start: start_display.row(),
3755 end: end_display.row(),
3756 color,
3757 }
3758 });
3759 marker_quads.extend(
3760 scrollbar_layout
3761 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
3762 );
3763 }
3764
3765 Arc::from(marker_quads)
3766 })
3767 .await;
3768
3769 editor.update(&mut cx, |editor, cx| {
3770 editor.scrollbar_marker_state.markers = scrollbar_markers;
3771 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
3772 editor.scrollbar_marker_state.pending_refresh = None;
3773 cx.notify();
3774 })?;
3775
3776 Ok(())
3777 }));
3778 });
3779 }
3780
3781 #[allow(clippy::too_many_arguments)]
3782 fn paint_highlighted_range(
3783 &self,
3784 range: Range<DisplayPoint>,
3785 color: Hsla,
3786 corner_radius: Pixels,
3787 line_end_overshoot: Pixels,
3788 layout: &EditorLayout,
3789 cx: &mut WindowContext,
3790 ) {
3791 let start_row = layout.visible_display_row_range.start;
3792 let end_row = layout.visible_display_row_range.end;
3793 if range.start != range.end {
3794 let row_range = if range.end.column() == 0 {
3795 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3796 } else {
3797 cmp::max(range.start.row(), start_row)
3798 ..cmp::min(range.end.row().next_row(), end_row)
3799 };
3800
3801 let highlighted_range = HighlightedRange {
3802 color,
3803 line_height: layout.position_map.line_height,
3804 corner_radius,
3805 start_y: layout.content_origin.y
3806 + row_range.start.as_f32() * layout.position_map.line_height
3807 - layout.position_map.scroll_pixel_position.y,
3808 lines: row_range
3809 .iter_rows()
3810 .map(|row| {
3811 let line_layout =
3812 &layout.position_map.line_layouts[row.minus(start_row) as usize];
3813 HighlightedRangeLine {
3814 start_x: if row == range.start.row() {
3815 layout.content_origin.x
3816 + line_layout.x_for_index(range.start.column() as usize)
3817 - layout.position_map.scroll_pixel_position.x
3818 } else {
3819 layout.content_origin.x
3820 - layout.position_map.scroll_pixel_position.x
3821 },
3822 end_x: if row == range.end.row() {
3823 layout.content_origin.x
3824 + line_layout.x_for_index(range.end.column() as usize)
3825 - layout.position_map.scroll_pixel_position.x
3826 } else {
3827 layout.content_origin.x + line_layout.width + line_end_overshoot
3828 - layout.position_map.scroll_pixel_position.x
3829 },
3830 }
3831 })
3832 .collect(),
3833 };
3834
3835 highlighted_range.paint(layout.text_hitbox.bounds, cx);
3836 }
3837 }
3838
3839 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3840 if let Some(mut inline_blame) = layout.inline_blame.take() {
3841 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3842 inline_blame.paint(cx);
3843 })
3844 }
3845 }
3846
3847 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3848 for mut block in layout.blocks.drain(..) {
3849 block.element.paint(cx);
3850 }
3851 }
3852
3853 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3854 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
3855 mouse_context_menu.paint(cx);
3856 }
3857 }
3858
3859 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3860 cx.on_mouse_event({
3861 let position_map = layout.position_map.clone();
3862 let editor = self.editor.clone();
3863 let hitbox = layout.hitbox.clone();
3864 let mut delta = ScrollDelta::default();
3865
3866 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
3867 // accidentally turn off their scrolling.
3868 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
3869
3870 move |event: &ScrollWheelEvent, phase, cx| {
3871 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
3872 delta = delta.coalesce(event.delta);
3873 editor.update(cx, |editor, cx| {
3874 let position_map: &PositionMap = &position_map;
3875
3876 let line_height = position_map.line_height;
3877 let max_glyph_width = position_map.em_width;
3878 let (delta, axis) = match delta {
3879 gpui::ScrollDelta::Pixels(mut pixels) => {
3880 //Trackpad
3881 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
3882 (pixels, axis)
3883 }
3884
3885 gpui::ScrollDelta::Lines(lines) => {
3886 //Not trackpad
3887 let pixels =
3888 point(lines.x * max_glyph_width, lines.y * line_height);
3889 (pixels, None)
3890 }
3891 };
3892
3893 let current_scroll_position = position_map.snapshot.scroll_position();
3894 let x = (current_scroll_position.x * max_glyph_width
3895 - (delta.x * scroll_sensitivity))
3896 / max_glyph_width;
3897 let y = (current_scroll_position.y * line_height
3898 - (delta.y * scroll_sensitivity))
3899 / line_height;
3900 let mut scroll_position =
3901 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
3902 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
3903 if forbid_vertical_scroll {
3904 scroll_position.y = current_scroll_position.y;
3905 }
3906
3907 if scroll_position != current_scroll_position {
3908 editor.scroll(scroll_position, axis, cx);
3909 cx.stop_propagation();
3910 } else if y < 0. {
3911 // Due to clamping, we may fail to detect cases of overscroll to the top;
3912 // We want the scroll manager to get an update in such cases and detect the change of direction
3913 // on the next frame.
3914 cx.notify();
3915 }
3916 });
3917 }
3918 }
3919 });
3920 }
3921
3922 fn paint_mouse_listeners(
3923 &mut self,
3924 layout: &EditorLayout,
3925 hovered_hunk: Option<HoveredHunk>,
3926 cx: &mut WindowContext,
3927 ) {
3928 self.paint_scroll_wheel_listener(layout, cx);
3929
3930 cx.on_mouse_event({
3931 let position_map = layout.position_map.clone();
3932 let editor = self.editor.clone();
3933 let text_hitbox = layout.text_hitbox.clone();
3934 let gutter_hitbox = layout.gutter_hitbox.clone();
3935
3936 move |event: &MouseDownEvent, phase, cx| {
3937 if phase == DispatchPhase::Bubble {
3938 match event.button {
3939 MouseButton::Left => editor.update(cx, |editor, cx| {
3940 Self::mouse_left_down(
3941 editor,
3942 event,
3943 hovered_hunk.clone(),
3944 &position_map,
3945 &text_hitbox,
3946 &gutter_hitbox,
3947 cx,
3948 );
3949 }),
3950 MouseButton::Right => editor.update(cx, |editor, cx| {
3951 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
3952 }),
3953 MouseButton::Middle => editor.update(cx, |editor, cx| {
3954 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
3955 }),
3956 _ => {}
3957 };
3958 }
3959 }
3960 });
3961
3962 cx.on_mouse_event({
3963 let editor = self.editor.clone();
3964 let position_map = layout.position_map.clone();
3965 let text_hitbox = layout.text_hitbox.clone();
3966
3967 move |event: &MouseUpEvent, phase, cx| {
3968 if phase == DispatchPhase::Bubble {
3969 editor.update(cx, |editor, cx| {
3970 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
3971 });
3972 }
3973 }
3974 });
3975 cx.on_mouse_event({
3976 let position_map = layout.position_map.clone();
3977 let editor = self.editor.clone();
3978 let text_hitbox = layout.text_hitbox.clone();
3979 let gutter_hitbox = layout.gutter_hitbox.clone();
3980
3981 move |event: &MouseMoveEvent, phase, cx| {
3982 if phase == DispatchPhase::Bubble {
3983 editor.update(cx, |editor, cx| {
3984 if editor.hover_state.focused(cx) {
3985 return;
3986 }
3987 if event.pressed_button == Some(MouseButton::Left)
3988 || event.pressed_button == Some(MouseButton::Middle)
3989 {
3990 Self::mouse_dragged(
3991 editor,
3992 event,
3993 &position_map,
3994 text_hitbox.bounds,
3995 cx,
3996 )
3997 }
3998
3999 Self::mouse_moved(
4000 editor,
4001 event,
4002 &position_map,
4003 &text_hitbox,
4004 &gutter_hitbox,
4005 cx,
4006 )
4007 });
4008 }
4009 }
4010 });
4011 }
4012
4013 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
4014 bounds.upper_right().x - self.style.scrollbar_width
4015 }
4016
4017 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
4018 let style = &self.style;
4019 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4020 let layout = cx
4021 .text_system()
4022 .shape_line(
4023 SharedString::from(" ".repeat(column)),
4024 font_size,
4025 &[TextRun {
4026 len: column,
4027 font: style.text.font(),
4028 color: Hsla::default(),
4029 background_color: None,
4030 underline: None,
4031 strikethrough: None,
4032 }],
4033 )
4034 .unwrap();
4035
4036 layout.width
4037 }
4038
4039 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
4040 let digit_count = snapshot
4041 .max_buffer_row()
4042 .next_row()
4043 .as_f32()
4044 .log10()
4045 .floor() as usize
4046 + 1;
4047 self.column_pixels(digit_count, cx)
4048 }
4049
4050 #[allow(clippy::too_many_arguments)]
4051 fn layout_hunk_diff_close_indicators(
4052 &self,
4053 line_height: Pixels,
4054 scroll_pixel_position: gpui::Point<Pixels>,
4055 gutter_dimensions: &GutterDimensions,
4056 gutter_hitbox: &Hitbox,
4057 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4058 expanded_hunks_by_rows: HashMap<DisplayRow, ExpandedHunk>,
4059 cx: &mut WindowContext,
4060 ) -> Vec<AnyElement> {
4061 self.editor.update(cx, |editor, cx| {
4062 expanded_hunks_by_rows
4063 .into_iter()
4064 .map(|(display_row, hunk)| {
4065 let button = editor.close_hunk_diff_button(
4066 HoveredHunk {
4067 multi_buffer_range: hunk.hunk_range,
4068 status: hunk.status,
4069 diff_base_byte_range: hunk.diff_base_byte_range,
4070 },
4071 display_row,
4072 cx,
4073 );
4074
4075 prepaint_gutter_button(
4076 button,
4077 display_row,
4078 line_height,
4079 gutter_dimensions,
4080 scroll_pixel_position,
4081 gutter_hitbox,
4082 rows_with_hunk_bounds,
4083 cx,
4084 )
4085 })
4086 .collect()
4087 })
4088 }
4089}
4090
4091#[allow(clippy::too_many_arguments)]
4092fn prepaint_gutter_button(
4093 button: IconButton,
4094 row: DisplayRow,
4095 line_height: Pixels,
4096 gutter_dimensions: &GutterDimensions,
4097 scroll_pixel_position: gpui::Point<Pixels>,
4098 gutter_hitbox: &Hitbox,
4099 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4100 cx: &mut WindowContext<'_>,
4101) -> AnyElement {
4102 let mut button = button.into_any_element();
4103 let available_space = size(
4104 AvailableSpace::MinContent,
4105 AvailableSpace::Definite(line_height),
4106 );
4107 let indicator_size = button.layout_as_root(available_space, cx);
4108
4109 let blame_offset = gutter_dimensions.git_blame_entries_width;
4110 let gutter_offset = rows_with_hunk_bounds
4111 .get(&row)
4112 .map(|bounds| bounds.origin.x + bounds.size.width);
4113 let left_offset = blame_offset.max(gutter_offset).unwrap_or(Pixels::ZERO);
4114
4115 let mut x = left_offset;
4116 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
4117 - indicator_size.width
4118 - left_offset;
4119 x += available_width / 2.;
4120
4121 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
4122 y += (line_height - indicator_size.height) / 2.;
4123
4124 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
4125 button
4126}
4127
4128fn render_inline_blame_entry(
4129 blame: &gpui::Model<GitBlame>,
4130 blame_entry: BlameEntry,
4131 style: &EditorStyle,
4132 workspace: Option<WeakView<Workspace>>,
4133 cx: &mut WindowContext<'_>,
4134) -> AnyElement {
4135 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4136
4137 let author = blame_entry.author.as_deref().unwrap_or_default();
4138 let text = format!("{}, {}", author, relative_timestamp);
4139
4140 let details = blame.read(cx).details_for_entry(&blame_entry);
4141
4142 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
4143
4144 h_flex()
4145 .id("inline-blame")
4146 .w_full()
4147 .font_family(style.text.font().family)
4148 .text_color(cx.theme().status().hint)
4149 .line_height(style.text.line_height)
4150 .child(Icon::new(IconName::FileGit).color(Color::Hint))
4151 .child(text)
4152 .gap_2()
4153 .hoverable_tooltip(move |_| tooltip.clone().into())
4154 .into_any()
4155}
4156
4157fn render_blame_entry(
4158 ix: usize,
4159 blame: &gpui::Model<GitBlame>,
4160 blame_entry: BlameEntry,
4161 style: &EditorStyle,
4162 last_used_color: &mut Option<(PlayerColor, Oid)>,
4163 editor: View<Editor>,
4164 cx: &mut WindowContext<'_>,
4165) -> AnyElement {
4166 let mut sha_color = cx
4167 .theme()
4168 .players()
4169 .color_for_participant(blame_entry.sha.into());
4170 // If the last color we used is the same as the one we get for this line, but
4171 // the commit SHAs are different, then we try again to get a different color.
4172 match *last_used_color {
4173 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
4174 let index: u32 = blame_entry.sha.into();
4175 sha_color = cx.theme().players().color_for_participant(index + 1);
4176 }
4177 _ => {}
4178 };
4179 last_used_color.replace((sha_color, blame_entry.sha));
4180
4181 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4182
4183 let short_commit_id = blame_entry.sha.display_short();
4184
4185 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
4186 let name = util::truncate_and_trailoff(author_name, 20);
4187
4188 let details = blame.read(cx).details_for_entry(&blame_entry);
4189
4190 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
4191
4192 let tooltip = cx.new_view(|_| {
4193 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
4194 });
4195
4196 h_flex()
4197 .w_full()
4198 .font_family(style.text.font().family)
4199 .line_height(style.text.line_height)
4200 .id(("blame", ix))
4201 .children([
4202 div()
4203 .text_color(sha_color.cursor)
4204 .child(short_commit_id)
4205 .mr_2(),
4206 div()
4207 .w_full()
4208 .h_flex()
4209 .justify_between()
4210 .text_color(cx.theme().status().hint)
4211 .child(name)
4212 .child(relative_timestamp),
4213 ])
4214 .on_mouse_down(MouseButton::Right, {
4215 let blame_entry = blame_entry.clone();
4216 let details = details.clone();
4217 move |event, cx| {
4218 deploy_blame_entry_context_menu(
4219 &blame_entry,
4220 details.as_ref(),
4221 editor.clone(),
4222 event.position,
4223 cx,
4224 );
4225 }
4226 })
4227 .hover(|style| style.bg(cx.theme().colors().element_hover))
4228 .when_some(
4229 details.and_then(|details| details.permalink),
4230 |this, url| {
4231 let url = url.clone();
4232 this.cursor_pointer().on_click(move |_, cx| {
4233 cx.stop_propagation();
4234 cx.open_url(url.as_str())
4235 })
4236 },
4237 )
4238 .hoverable_tooltip(move |_| tooltip.clone().into())
4239 .into_any()
4240}
4241
4242fn deploy_blame_entry_context_menu(
4243 blame_entry: &BlameEntry,
4244 details: Option<&CommitDetails>,
4245 editor: View<Editor>,
4246 position: gpui::Point<Pixels>,
4247 cx: &mut WindowContext<'_>,
4248) {
4249 let context_menu = ContextMenu::build(cx, move |menu, _| {
4250 let sha = format!("{}", blame_entry.sha);
4251 menu.on_blur_subscription(Subscription::new(|| {}))
4252 .entry("Copy commit SHA", None, move |cx| {
4253 cx.write_to_clipboard(ClipboardItem::new(sha.clone()));
4254 })
4255 .when_some(
4256 details.and_then(|details| details.permalink.clone()),
4257 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
4258 )
4259 });
4260
4261 editor.update(cx, move |editor, cx| {
4262 editor.mouse_context_menu = Some(MouseContextMenu::pinned_to_screen(
4263 position,
4264 context_menu,
4265 cx,
4266 ));
4267 cx.notify();
4268 });
4269}
4270
4271#[derive(Debug)]
4272pub(crate) struct LineWithInvisibles {
4273 fragments: SmallVec<[LineFragment; 1]>,
4274 invisibles: Vec<Invisible>,
4275 len: usize,
4276 width: Pixels,
4277 font_size: Pixels,
4278}
4279
4280#[allow(clippy::large_enum_variant)]
4281enum LineFragment {
4282 Text(ShapedLine),
4283 Element {
4284 element: Option<AnyElement>,
4285 size: Size<Pixels>,
4286 len: usize,
4287 },
4288}
4289
4290impl fmt::Debug for LineFragment {
4291 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
4292 match self {
4293 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
4294 LineFragment::Element { size, len, .. } => f
4295 .debug_struct("Element")
4296 .field("size", size)
4297 .field("len", len)
4298 .finish(),
4299 }
4300 }
4301}
4302
4303impl LineWithInvisibles {
4304 fn from_chunks<'a>(
4305 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
4306 text_style: &TextStyle,
4307 max_line_len: usize,
4308 max_line_count: usize,
4309 line_number_layouts: &[Option<ShapedLine>],
4310 editor_mode: EditorMode,
4311 cx: &mut WindowContext,
4312 ) -> Vec<Self> {
4313 let mut layouts = Vec::with_capacity(max_line_count);
4314 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
4315 let mut line = String::new();
4316 let mut invisibles = Vec::new();
4317 let mut width = Pixels::ZERO;
4318 let mut len = 0;
4319 let mut styles = Vec::new();
4320 let mut non_whitespace_added = false;
4321 let mut row = 0;
4322 let mut line_exceeded_max_len = false;
4323 let font_size = text_style.font_size.to_pixels(cx.rem_size());
4324
4325 let ellipsis = SharedString::from("⋯");
4326
4327 for highlighted_chunk in chunks.chain([HighlightedChunk {
4328 text: "\n",
4329 style: None,
4330 is_tab: false,
4331 renderer: None,
4332 }]) {
4333 if let Some(renderer) = highlighted_chunk.renderer {
4334 if !line.is_empty() {
4335 let shaped_line = cx
4336 .text_system()
4337 .shape_line(line.clone().into(), font_size, &styles)
4338 .unwrap();
4339 width += shaped_line.width;
4340 len += shaped_line.len;
4341 fragments.push(LineFragment::Text(shaped_line));
4342 line.clear();
4343 styles.clear();
4344 }
4345
4346 let available_width = if renderer.constrain_width {
4347 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
4348 ellipsis.clone()
4349 } else {
4350 SharedString::from(Arc::from(highlighted_chunk.text))
4351 };
4352 let shaped_line = cx
4353 .text_system()
4354 .shape_line(
4355 chunk,
4356 font_size,
4357 &[text_style.to_run(highlighted_chunk.text.len())],
4358 )
4359 .unwrap();
4360 AvailableSpace::Definite(shaped_line.width)
4361 } else {
4362 AvailableSpace::MinContent
4363 };
4364
4365 let mut element = (renderer.render)(cx);
4366 let line_height = text_style.line_height_in_pixels(cx.rem_size());
4367 let size = element.layout_as_root(
4368 size(available_width, AvailableSpace::Definite(line_height)),
4369 cx,
4370 );
4371
4372 width += size.width;
4373 len += highlighted_chunk.text.len();
4374 fragments.push(LineFragment::Element {
4375 element: Some(element),
4376 size,
4377 len: highlighted_chunk.text.len(),
4378 });
4379 } else {
4380 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
4381 if ix > 0 {
4382 let shaped_line = cx
4383 .text_system()
4384 .shape_line(line.clone().into(), font_size, &styles)
4385 .unwrap();
4386 width += shaped_line.width;
4387 len += shaped_line.len;
4388 fragments.push(LineFragment::Text(shaped_line));
4389 layouts.push(Self {
4390 width: mem::take(&mut width),
4391 len: mem::take(&mut len),
4392 fragments: mem::take(&mut fragments),
4393 invisibles: std::mem::take(&mut invisibles),
4394 font_size,
4395 });
4396
4397 line.clear();
4398 styles.clear();
4399 row += 1;
4400 line_exceeded_max_len = false;
4401 non_whitespace_added = false;
4402 if row == max_line_count {
4403 return layouts;
4404 }
4405 }
4406
4407 if !line_chunk.is_empty() && !line_exceeded_max_len {
4408 let text_style = if let Some(style) = highlighted_chunk.style {
4409 Cow::Owned(text_style.clone().highlight(style))
4410 } else {
4411 Cow::Borrowed(text_style)
4412 };
4413
4414 if line.len() + line_chunk.len() > max_line_len {
4415 let mut chunk_len = max_line_len - line.len();
4416 while !line_chunk.is_char_boundary(chunk_len) {
4417 chunk_len -= 1;
4418 }
4419 line_chunk = &line_chunk[..chunk_len];
4420 line_exceeded_max_len = true;
4421 }
4422
4423 styles.push(TextRun {
4424 len: line_chunk.len(),
4425 font: text_style.font(),
4426 color: text_style.color,
4427 background_color: text_style.background_color,
4428 underline: text_style.underline,
4429 strikethrough: text_style.strikethrough,
4430 });
4431
4432 if editor_mode == EditorMode::Full {
4433 // Line wrap pads its contents with fake whitespaces,
4434 // avoid printing them
4435 let inside_wrapped_string = line_number_layouts
4436 .get(row)
4437 .and_then(|layout| layout.as_ref())
4438 .is_none();
4439 if highlighted_chunk.is_tab {
4440 if non_whitespace_added || !inside_wrapped_string {
4441 invisibles.push(Invisible::Tab {
4442 line_start_offset: line.len(),
4443 line_end_offset: line.len() + line_chunk.len(),
4444 });
4445 }
4446 } else {
4447 invisibles.extend(
4448 line_chunk
4449 .bytes()
4450 .enumerate()
4451 .filter(|(_, line_byte)| {
4452 let is_whitespace =
4453 (*line_byte as char).is_whitespace();
4454 non_whitespace_added |= !is_whitespace;
4455 is_whitespace
4456 && (non_whitespace_added || !inside_wrapped_string)
4457 })
4458 .map(|(whitespace_index, _)| Invisible::Whitespace {
4459 line_offset: line.len() + whitespace_index,
4460 }),
4461 )
4462 }
4463 }
4464
4465 line.push_str(line_chunk);
4466 }
4467 }
4468 }
4469 }
4470
4471 layouts
4472 }
4473
4474 fn prepaint(
4475 &mut self,
4476 line_height: Pixels,
4477 scroll_pixel_position: gpui::Point<Pixels>,
4478 row: DisplayRow,
4479 content_origin: gpui::Point<Pixels>,
4480 line_elements: &mut SmallVec<[AnyElement; 1]>,
4481 cx: &mut WindowContext,
4482 ) {
4483 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
4484 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
4485 for fragment in &mut self.fragments {
4486 match fragment {
4487 LineFragment::Text(line) => {
4488 fragment_origin.x += line.width;
4489 }
4490 LineFragment::Element { element, size, .. } => {
4491 let mut element = element
4492 .take()
4493 .expect("you can't prepaint LineWithInvisibles twice");
4494
4495 // Center the element vertically within the line.
4496 let mut element_origin = fragment_origin;
4497 element_origin.y += (line_height - size.height) / 2.;
4498 element.prepaint_at(element_origin, cx);
4499 line_elements.push(element);
4500
4501 fragment_origin.x += size.width;
4502 }
4503 }
4504 }
4505 }
4506
4507 fn draw(
4508 &self,
4509 layout: &EditorLayout,
4510 row: DisplayRow,
4511 content_origin: gpui::Point<Pixels>,
4512 whitespace_setting: ShowWhitespaceSetting,
4513 selection_ranges: &[Range<DisplayPoint>],
4514 cx: &mut WindowContext,
4515 ) {
4516 let line_height = layout.position_map.line_height;
4517 let line_y = line_height
4518 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
4519
4520 let mut fragment_origin =
4521 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
4522
4523 for fragment in &self.fragments {
4524 match fragment {
4525 LineFragment::Text(line) => {
4526 line.paint(fragment_origin, line_height, cx).log_err();
4527 fragment_origin.x += line.width;
4528 }
4529 LineFragment::Element { size, .. } => {
4530 fragment_origin.x += size.width;
4531 }
4532 }
4533 }
4534
4535 self.draw_invisibles(
4536 &selection_ranges,
4537 layout,
4538 content_origin,
4539 line_y,
4540 row,
4541 line_height,
4542 whitespace_setting,
4543 cx,
4544 );
4545 }
4546
4547 #[allow(clippy::too_many_arguments)]
4548 fn draw_invisibles(
4549 &self,
4550 selection_ranges: &[Range<DisplayPoint>],
4551 layout: &EditorLayout,
4552 content_origin: gpui::Point<Pixels>,
4553 line_y: Pixels,
4554 row: DisplayRow,
4555 line_height: Pixels,
4556 whitespace_setting: ShowWhitespaceSetting,
4557 cx: &mut WindowContext,
4558 ) {
4559 let extract_whitespace_info = |invisible: &Invisible| {
4560 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
4561 Invisible::Tab {
4562 line_start_offset,
4563 line_end_offset,
4564 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
4565 Invisible::Whitespace { line_offset } => {
4566 (*line_offset, line_offset + 1, &layout.space_invisible)
4567 }
4568 };
4569
4570 let x_offset = self.x_for_index(token_offset);
4571 let invisible_offset =
4572 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
4573 let origin = content_origin
4574 + gpui::point(
4575 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
4576 line_y,
4577 );
4578
4579 (
4580 [token_offset, token_end_offset],
4581 Box::new(move |cx: &mut WindowContext| {
4582 invisible_symbol.paint(origin, line_height, cx).log_err();
4583 }),
4584 )
4585 };
4586
4587 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
4588 match whitespace_setting {
4589 ShowWhitespaceSetting::None => return,
4590 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
4591 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
4592 let invisible_point = DisplayPoint::new(row, start as u32);
4593 if !selection_ranges
4594 .iter()
4595 .any(|region| region.start <= invisible_point && invisible_point < region.end)
4596 {
4597 return;
4598 }
4599
4600 paint(cx);
4601 }),
4602
4603 // For a whitespace to be on a boundary, any of the following conditions need to be met:
4604 // - It is a tab
4605 // - It is adjacent to an edge (start or end)
4606 // - It is adjacent to a whitespace (left or right)
4607 ShowWhitespaceSetting::Boundary => {
4608 // We'll need to keep track of the last invisible we've seen and then check if we are adjacent to it for some of
4609 // the above cases.
4610 // Note: We zip in the original `invisibles` to check for tab equality
4611 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
4612 for (([start, end], paint), invisible) in
4613 invisible_iter.zip_eq(self.invisibles.iter())
4614 {
4615 let should_render = match (&last_seen, invisible) {
4616 (_, Invisible::Tab { .. }) => true,
4617 (Some((_, last_end, _)), _) => *last_end == start,
4618 _ => false,
4619 };
4620
4621 if should_render || start == 0 || end == self.len {
4622 paint(cx);
4623
4624 // Since we are scanning from the left, we will skip over the first available whitespace that is part
4625 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
4626 if let Some((should_render_last, last_end, paint_last)) = last_seen {
4627 // Note that we need to make sure that the last one is actually adjacent
4628 if !should_render_last && last_end == start {
4629 paint_last(cx);
4630 }
4631 }
4632 }
4633
4634 // Manually render anything within a selection
4635 let invisible_point = DisplayPoint::new(row, start as u32);
4636 if selection_ranges.iter().any(|region| {
4637 region.start <= invisible_point && invisible_point < region.end
4638 }) {
4639 paint(cx);
4640 }
4641
4642 last_seen = Some((should_render, end, paint));
4643 }
4644 }
4645 };
4646 }
4647
4648 pub fn x_for_index(&self, index: usize) -> Pixels {
4649 let mut fragment_start_x = Pixels::ZERO;
4650 let mut fragment_start_index = 0;
4651
4652 for fragment in &self.fragments {
4653 match fragment {
4654 LineFragment::Text(shaped_line) => {
4655 let fragment_end_index = fragment_start_index + shaped_line.len;
4656 if index < fragment_end_index {
4657 return fragment_start_x
4658 + shaped_line.x_for_index(index - fragment_start_index);
4659 }
4660 fragment_start_x += shaped_line.width;
4661 fragment_start_index = fragment_end_index;
4662 }
4663 LineFragment::Element { len, size, .. } => {
4664 let fragment_end_index = fragment_start_index + len;
4665 if index < fragment_end_index {
4666 return fragment_start_x;
4667 }
4668 fragment_start_x += size.width;
4669 fragment_start_index = fragment_end_index;
4670 }
4671 }
4672 }
4673
4674 fragment_start_x
4675 }
4676
4677 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
4678 let mut fragment_start_x = Pixels::ZERO;
4679 let mut fragment_start_index = 0;
4680
4681 for fragment in &self.fragments {
4682 match fragment {
4683 LineFragment::Text(shaped_line) => {
4684 let fragment_end_x = fragment_start_x + shaped_line.width;
4685 if x < fragment_end_x {
4686 return Some(
4687 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
4688 );
4689 }
4690 fragment_start_x = fragment_end_x;
4691 fragment_start_index += shaped_line.len;
4692 }
4693 LineFragment::Element { len, size, .. } => {
4694 let fragment_end_x = fragment_start_x + size.width;
4695 if x < fragment_end_x {
4696 return Some(fragment_start_index);
4697 }
4698 fragment_start_index += len;
4699 fragment_start_x = fragment_end_x;
4700 }
4701 }
4702 }
4703
4704 None
4705 }
4706
4707 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
4708 let mut fragment_start_index = 0;
4709
4710 for fragment in &self.fragments {
4711 match fragment {
4712 LineFragment::Text(shaped_line) => {
4713 let fragment_end_index = fragment_start_index + shaped_line.len;
4714 if index < fragment_end_index {
4715 return shaped_line.font_id_for_index(index - fragment_start_index);
4716 }
4717 fragment_start_index = fragment_end_index;
4718 }
4719 LineFragment::Element { len, .. } => {
4720 let fragment_end_index = fragment_start_index + len;
4721 if index < fragment_end_index {
4722 return None;
4723 }
4724 fragment_start_index = fragment_end_index;
4725 }
4726 }
4727 }
4728
4729 None
4730 }
4731}
4732
4733#[derive(Debug, Clone, Copy, PartialEq, Eq)]
4734enum Invisible {
4735 /// A tab character
4736 ///
4737 /// A tab character is internally represented by spaces (configured by the user's tab width)
4738 /// aligned to the nearest column, so it's necessary to store the start and end offset for
4739 /// adjacency checks.
4740 Tab {
4741 line_start_offset: usize,
4742 line_end_offset: usize,
4743 },
4744 Whitespace {
4745 line_offset: usize,
4746 },
4747}
4748
4749impl EditorElement {
4750 /// Returns the rem size to use when rendering the [`EditorElement`].
4751 ///
4752 /// This allows UI elements to scale based on the `buffer_font_size`.
4753 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
4754 match self.editor.read(cx).mode {
4755 EditorMode::Full => {
4756 let buffer_font_size = self.style.text.font_size;
4757 match buffer_font_size {
4758 AbsoluteLength::Pixels(pixels) => {
4759 let rem_size_scale = {
4760 // Our default UI font size is 14px on a 16px base scale.
4761 // This means the default UI font size is 0.875rems.
4762 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
4763
4764 // We then determine the delta between a single rem and the default font
4765 // size scale.
4766 let default_font_size_delta = 1. - default_font_size_scale;
4767
4768 // Finally, we add this delta to 1rem to get the scale factor that
4769 // should be used to scale up the UI.
4770 1. + default_font_size_delta
4771 };
4772
4773 Some(pixels * rem_size_scale)
4774 }
4775 AbsoluteLength::Rems(rems) => {
4776 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
4777 }
4778 }
4779 }
4780 // We currently use single-line and auto-height editors in UI contexts,
4781 // so we don't want to scale everything with the buffer font size, as it
4782 // ends up looking off.
4783 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
4784 }
4785 }
4786}
4787
4788impl Element for EditorElement {
4789 type RequestLayoutState = ();
4790 type PrepaintState = EditorLayout;
4791
4792 fn id(&self) -> Option<ElementId> {
4793 None
4794 }
4795
4796 fn request_layout(
4797 &mut self,
4798 _: Option<&GlobalElementId>,
4799 cx: &mut WindowContext,
4800 ) -> (gpui::LayoutId, ()) {
4801 let rem_size = self.rem_size(cx);
4802 cx.with_rem_size(rem_size, |cx| {
4803 self.editor.update(cx, |editor, cx| {
4804 editor.set_style(self.style.clone(), cx);
4805
4806 let layout_id = match editor.mode {
4807 EditorMode::SingleLine { auto_width } => {
4808 let rem_size = cx.rem_size();
4809
4810 let height = self.style.text.line_height_in_pixels(rem_size);
4811 if auto_width {
4812 let editor_handle = cx.view().clone();
4813 let style = self.style.clone();
4814 cx.request_measured_layout(Style::default(), move |_, _, cx| {
4815 let editor_snapshot =
4816 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
4817 let line = Self::layout_lines(
4818 DisplayRow(0)..DisplayRow(1),
4819 &[],
4820 &editor_snapshot,
4821 &style,
4822 cx,
4823 )
4824 .pop()
4825 .unwrap();
4826
4827 let font_id = cx.text_system().resolve_font(&style.text.font());
4828 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4829 let em_width = cx
4830 .text_system()
4831 .typographic_bounds(font_id, font_size, 'm')
4832 .unwrap()
4833 .size
4834 .width;
4835
4836 size(line.width + em_width, height)
4837 })
4838 } else {
4839 let mut style = Style::default();
4840 style.size.height = height.into();
4841 style.size.width = relative(1.).into();
4842 cx.request_layout(style, None)
4843 }
4844 }
4845 EditorMode::AutoHeight { max_lines } => {
4846 let editor_handle = cx.view().clone();
4847 let max_line_number_width =
4848 self.max_line_number_width(&editor.snapshot(cx), cx);
4849 cx.request_measured_layout(
4850 Style::default(),
4851 move |known_dimensions, available_space, cx| {
4852 editor_handle
4853 .update(cx, |editor, cx| {
4854 compute_auto_height_layout(
4855 editor,
4856 max_lines,
4857 max_line_number_width,
4858 known_dimensions,
4859 available_space.width,
4860 cx,
4861 )
4862 })
4863 .unwrap_or_default()
4864 },
4865 )
4866 }
4867 EditorMode::Full => {
4868 let mut style = Style::default();
4869 style.size.width = relative(1.).into();
4870 style.size.height = relative(1.).into();
4871 cx.request_layout(style, None)
4872 }
4873 };
4874
4875 (layout_id, ())
4876 })
4877 })
4878 }
4879
4880 fn prepaint(
4881 &mut self,
4882 _: Option<&GlobalElementId>,
4883 bounds: Bounds<Pixels>,
4884 _: &mut Self::RequestLayoutState,
4885 cx: &mut WindowContext,
4886 ) -> Self::PrepaintState {
4887 let text_style = TextStyleRefinement {
4888 font_size: Some(self.style.text.font_size),
4889 line_height: Some(self.style.text.line_height),
4890 ..Default::default()
4891 };
4892 let focus_handle = self.editor.focus_handle(cx);
4893 cx.set_view_id(self.editor.entity_id());
4894 cx.set_focus_handle(&focus_handle);
4895
4896 let rem_size = self.rem_size(cx);
4897 cx.with_rem_size(rem_size, |cx| {
4898 cx.with_text_style(Some(text_style), |cx| {
4899 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
4900 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
4901 let style = self.style.clone();
4902
4903 let font_id = cx.text_system().resolve_font(&style.text.font());
4904 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4905 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4906 let em_width = cx
4907 .text_system()
4908 .typographic_bounds(font_id, font_size, 'm')
4909 .unwrap()
4910 .size
4911 .width;
4912 let em_advance = cx
4913 .text_system()
4914 .advance(font_id, font_size, 'm')
4915 .unwrap()
4916 .width;
4917
4918 let gutter_dimensions = snapshot.gutter_dimensions(
4919 font_id,
4920 font_size,
4921 em_width,
4922 self.max_line_number_width(&snapshot, cx),
4923 cx,
4924 );
4925 let text_width = bounds.size.width - gutter_dimensions.width;
4926
4927 let right_margin = if snapshot.mode == EditorMode::Full {
4928 EditorElement::SCROLLBAR_WIDTH
4929 } else {
4930 px(0.)
4931 };
4932 let overscroll = size(em_width + right_margin, px(0.));
4933
4934 snapshot = self.editor.update(cx, |editor, cx| {
4935 editor.last_bounds = Some(bounds);
4936 editor.gutter_dimensions = gutter_dimensions;
4937 editor.set_visible_line_count(bounds.size.height / line_height, cx);
4938
4939 let editor_width =
4940 text_width - gutter_dimensions.margin - overscroll.width - em_width;
4941 let wrap_width = match editor.soft_wrap_mode(cx) {
4942 SoftWrap::None => None,
4943 SoftWrap::PreferLine => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
4944 SoftWrap::EditorWidth => Some(editor_width),
4945 SoftWrap::Column(column) => {
4946 Some(editor_width.min(column as f32 * em_advance))
4947 }
4948 };
4949
4950 if editor.set_wrap_width(wrap_width, cx) {
4951 editor.snapshot(cx)
4952 } else {
4953 snapshot
4954 }
4955 });
4956
4957 let wrap_guides = self
4958 .editor
4959 .read(cx)
4960 .wrap_guides(cx)
4961 .iter()
4962 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
4963 .collect::<SmallVec<[_; 2]>>();
4964
4965 let hitbox = cx.insert_hitbox(bounds, false);
4966 let gutter_hitbox =
4967 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
4968 let text_hitbox = cx.insert_hitbox(
4969 Bounds {
4970 origin: gutter_hitbox.upper_right(),
4971 size: size(text_width, bounds.size.height),
4972 },
4973 false,
4974 );
4975 // Offset the content_bounds from the text_bounds by the gutter margin (which
4976 // is roughly half a character wide) to make hit testing work more like how we want.
4977 let content_origin =
4978 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
4979
4980 let height_in_lines = bounds.size.height / line_height;
4981 let max_row = snapshot.max_point().row().as_f32();
4982 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
4983 (max_row - height_in_lines + 1.).max(0.)
4984 } else {
4985 let settings = EditorSettings::get_global(cx);
4986 match settings.scroll_beyond_last_line {
4987 ScrollBeyondLastLine::OnePage => max_row,
4988 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
4989 ScrollBeyondLastLine::VerticalScrollMargin => {
4990 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
4991 .max(0.)
4992 }
4993 }
4994 };
4995
4996 let mut autoscroll_containing_element = false;
4997 let mut autoscroll_horizontally = false;
4998 self.editor.update(cx, |editor, cx| {
4999 autoscroll_containing_element =
5000 editor.autoscroll_requested() || editor.has_pending_selection();
5001 autoscroll_horizontally =
5002 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
5003 snapshot = editor.snapshot(cx);
5004 });
5005
5006 let mut scroll_position = snapshot.scroll_position();
5007 // The scroll position is a fractional point, the whole number of which represents
5008 // the top of the window in terms of display rows.
5009 let start_row = DisplayRow(scroll_position.y as u32);
5010 let max_row = snapshot.max_point().row();
5011 let end_row = cmp::min(
5012 (scroll_position.y + height_in_lines).ceil() as u32,
5013 max_row.next_row().0,
5014 );
5015 let end_row = DisplayRow(end_row);
5016
5017 let buffer_rows = snapshot
5018 .buffer_rows(start_row)
5019 .take((start_row..end_row).len())
5020 .collect::<Vec<_>>();
5021
5022 let start_anchor = if start_row == Default::default() {
5023 Anchor::min()
5024 } else {
5025 snapshot.buffer_snapshot.anchor_before(
5026 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
5027 )
5028 };
5029 let end_anchor = if end_row > max_row {
5030 Anchor::max()
5031 } else {
5032 snapshot.buffer_snapshot.anchor_before(
5033 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
5034 )
5035 };
5036
5037 let highlighted_rows = self
5038 .editor
5039 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
5040 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
5041 start_anchor..end_anchor,
5042 &snapshot.display_snapshot,
5043 cx.theme().colors(),
5044 );
5045 let highlighted_gutter_ranges =
5046 self.editor.read(cx).gutter_highlights_in_range(
5047 start_anchor..end_anchor,
5048 &snapshot.display_snapshot,
5049 cx,
5050 );
5051
5052 let redacted_ranges = self.editor.read(cx).redacted_ranges(
5053 start_anchor..end_anchor,
5054 &snapshot.display_snapshot,
5055 cx,
5056 );
5057
5058 let (selections, active_rows, newest_selection_head) = self.layout_selections(
5059 start_anchor,
5060 end_anchor,
5061 &snapshot,
5062 start_row,
5063 end_row,
5064 cx,
5065 );
5066
5067 let line_numbers = self.layout_line_numbers(
5068 start_row..end_row,
5069 buffer_rows.iter().copied(),
5070 &active_rows,
5071 newest_selection_head,
5072 &snapshot,
5073 cx,
5074 );
5075
5076 let mut gutter_fold_toggles =
5077 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5078 self.layout_gutter_fold_toggles(
5079 start_row..end_row,
5080 buffer_rows.iter().copied(),
5081 &active_rows,
5082 &snapshot,
5083 cx,
5084 )
5085 });
5086 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5087 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
5088 });
5089
5090 let display_hunks = self.layout_gutter_git_hunks(
5091 line_height,
5092 &gutter_hitbox,
5093 start_row..end_row,
5094 &snapshot,
5095 cx,
5096 );
5097
5098 let mut max_visible_line_width = Pixels::ZERO;
5099 let mut line_layouts = Self::layout_lines(
5100 start_row..end_row,
5101 &line_numbers,
5102 &snapshot,
5103 &self.style,
5104 cx,
5105 );
5106 for line_with_invisibles in &line_layouts {
5107 if line_with_invisibles.width > max_visible_line_width {
5108 max_visible_line_width = line_with_invisibles.width;
5109 }
5110 }
5111
5112 let longest_line_width =
5113 layout_line(snapshot.longest_row(), &snapshot, &style, cx).width;
5114 let mut scroll_width =
5115 longest_line_width.max(max_visible_line_width) + overscroll.width;
5116
5117 let mut blocks = cx.with_element_namespace("blocks", |cx| {
5118 self.render_blocks(
5119 start_row..end_row,
5120 &snapshot,
5121 &hitbox,
5122 &text_hitbox,
5123 &mut scroll_width,
5124 &gutter_dimensions,
5125 em_width,
5126 gutter_dimensions.full_width(),
5127 line_height,
5128 &line_layouts,
5129 cx,
5130 )
5131 });
5132
5133 let start_buffer_row =
5134 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
5135 let end_buffer_row =
5136 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
5137
5138 let scroll_max = point(
5139 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5140 max_row.as_f32(),
5141 );
5142
5143 self.editor.update(cx, |editor, cx| {
5144 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5145
5146 let autoscrolled = if autoscroll_horizontally {
5147 editor.autoscroll_horizontally(
5148 start_row,
5149 text_hitbox.size.width,
5150 scroll_width,
5151 em_width,
5152 &line_layouts,
5153 cx,
5154 )
5155 } else {
5156 false
5157 };
5158
5159 if clamped || autoscrolled {
5160 snapshot = editor.snapshot(cx);
5161 scroll_position = snapshot.scroll_position();
5162 }
5163 });
5164
5165 let scroll_pixel_position = point(
5166 scroll_position.x * em_width,
5167 scroll_position.y * line_height,
5168 );
5169
5170 let indent_guides = self.layout_indent_guides(
5171 content_origin,
5172 text_hitbox.origin,
5173 start_buffer_row..end_buffer_row,
5174 scroll_pixel_position,
5175 line_height,
5176 &snapshot,
5177 cx,
5178 );
5179
5180 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5181 self.prepaint_crease_trailers(
5182 crease_trailers,
5183 &line_layouts,
5184 line_height,
5185 content_origin,
5186 scroll_pixel_position,
5187 em_width,
5188 cx,
5189 )
5190 });
5191
5192 let mut inline_blame = None;
5193 if let Some(newest_selection_head) = newest_selection_head {
5194 let display_row = newest_selection_head.row();
5195 if (start_row..end_row).contains(&display_row) {
5196 let line_ix = display_row.minus(start_row) as usize;
5197 let line_layout = &line_layouts[line_ix];
5198 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
5199 inline_blame = self.layout_inline_blame(
5200 display_row,
5201 &snapshot.display_snapshot,
5202 line_layout,
5203 crease_trailer_layout,
5204 em_width,
5205 content_origin,
5206 scroll_pixel_position,
5207 line_height,
5208 cx,
5209 );
5210 }
5211 }
5212
5213 let blamed_display_rows = self.layout_blame_entries(
5214 buffer_rows.into_iter(),
5215 em_width,
5216 scroll_position,
5217 line_height,
5218 &gutter_hitbox,
5219 gutter_dimensions.git_blame_entries_width,
5220 cx,
5221 );
5222
5223 let scroll_max = point(
5224 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5225 max_scroll_top,
5226 );
5227
5228 self.editor.update(cx, |editor, cx| {
5229 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5230
5231 let autoscrolled = if autoscroll_horizontally {
5232 editor.autoscroll_horizontally(
5233 start_row,
5234 text_hitbox.size.width,
5235 scroll_width,
5236 em_width,
5237 &line_layouts,
5238 cx,
5239 )
5240 } else {
5241 false
5242 };
5243
5244 if clamped || autoscrolled {
5245 snapshot = editor.snapshot(cx);
5246 scroll_position = snapshot.scroll_position();
5247 }
5248 });
5249
5250 let line_elements = self.prepaint_lines(
5251 start_row,
5252 &mut line_layouts,
5253 line_height,
5254 scroll_pixel_position,
5255 content_origin,
5256 cx,
5257 );
5258
5259 cx.with_element_namespace("blocks", |cx| {
5260 self.layout_blocks(
5261 &mut blocks,
5262 &hitbox,
5263 line_height,
5264 scroll_pixel_position,
5265 cx,
5266 );
5267 });
5268
5269 let cursors = self.collect_cursors(&snapshot, cx);
5270 let visible_row_range = start_row..end_row;
5271 let non_visible_cursors = cursors
5272 .iter()
5273 .any(move |c| !visible_row_range.contains(&c.0.row()));
5274
5275 let visible_cursors = self.layout_visible_cursors(
5276 &snapshot,
5277 &selections,
5278 start_row..end_row,
5279 &line_layouts,
5280 &text_hitbox,
5281 content_origin,
5282 scroll_position,
5283 scroll_pixel_position,
5284 line_height,
5285 em_width,
5286 autoscroll_containing_element,
5287 cx,
5288 );
5289
5290 let scrollbar_layout = self.layout_scrollbar(
5291 &snapshot,
5292 bounds,
5293 scroll_position,
5294 height_in_lines,
5295 non_visible_cursors,
5296 cx,
5297 );
5298
5299 let gutter_settings = EditorSettings::get_global(cx).gutter;
5300
5301 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
5302 editor
5303 .expanded_hunks
5304 .hunks(false)
5305 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
5306 .map(|expanded_hunk| {
5307 let start_row = expanded_hunk
5308 .hunk_range
5309 .start
5310 .to_display_point(&snapshot)
5311 .row();
5312 (start_row, expanded_hunk.clone())
5313 })
5314 .collect::<HashMap<_, _>>()
5315 });
5316
5317 let rows_with_hunk_bounds = display_hunks
5318 .iter()
5319 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
5320 .fold(
5321 HashMap::default(),
5322 |mut rows_with_hunk_bounds, (hunk, bounds)| {
5323 match hunk {
5324 DisplayDiffHunk::Folded { display_row } => {
5325 rows_with_hunk_bounds.insert(*display_row, bounds);
5326 }
5327 DisplayDiffHunk::Unfolded {
5328 display_row_range, ..
5329 } => {
5330 for display_row in display_row_range.iter_rows() {
5331 rows_with_hunk_bounds.insert(display_row, bounds);
5332 }
5333 }
5334 }
5335 rows_with_hunk_bounds
5336 },
5337 );
5338 let mut _context_menu_visible = false;
5339 let mut code_actions_indicator = None;
5340 if let Some(newest_selection_head) = newest_selection_head {
5341 if (start_row..end_row).contains(&newest_selection_head.row()) {
5342 _context_menu_visible = self.layout_context_menu(
5343 line_height,
5344 &hitbox,
5345 &text_hitbox,
5346 content_origin,
5347 start_row,
5348 scroll_pixel_position,
5349 &line_layouts,
5350 newest_selection_head,
5351 gutter_dimensions.width - gutter_dimensions.left_padding,
5352 cx,
5353 );
5354
5355 let show_code_actions = snapshot
5356 .show_code_actions
5357 .unwrap_or_else(|| gutter_settings.code_actions);
5358 if show_code_actions {
5359 let newest_selection_point =
5360 newest_selection_head.to_point(&snapshot.display_snapshot);
5361 let newest_selection_display_row =
5362 newest_selection_point.to_display_point(&snapshot).row();
5363 if !expanded_add_hunks_by_rows
5364 .contains_key(&newest_selection_display_row)
5365 {
5366 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
5367 MultiBufferRow(newest_selection_point.row),
5368 );
5369 if let Some((buffer, range)) = buffer {
5370 let buffer_id = buffer.remote_id();
5371 let row = range.start.row;
5372 let has_test_indicator = self
5373 .editor
5374 .read(cx)
5375 .tasks
5376 .contains_key(&(buffer_id, row));
5377
5378 if !has_test_indicator {
5379 code_actions_indicator = self
5380 .layout_code_actions_indicator(
5381 line_height,
5382 newest_selection_head,
5383 scroll_pixel_position,
5384 &gutter_dimensions,
5385 &gutter_hitbox,
5386 &rows_with_hunk_bounds,
5387 cx,
5388 );
5389 }
5390 }
5391 }
5392 }
5393 }
5394 }
5395
5396 let test_indicators = if gutter_settings.runnables {
5397 self.layout_run_indicators(
5398 line_height,
5399 scroll_pixel_position,
5400 &gutter_dimensions,
5401 &gutter_hitbox,
5402 &rows_with_hunk_bounds,
5403 &snapshot,
5404 cx,
5405 )
5406 } else {
5407 Vec::new()
5408 };
5409
5410 let close_indicators = self.layout_hunk_diff_close_indicators(
5411 line_height,
5412 scroll_pixel_position,
5413 &gutter_dimensions,
5414 &gutter_hitbox,
5415 &rows_with_hunk_bounds,
5416 expanded_add_hunks_by_rows,
5417 cx,
5418 );
5419
5420 self.layout_signature_help(
5421 &hitbox,
5422 content_origin,
5423 scroll_pixel_position,
5424 newest_selection_head,
5425 start_row,
5426 &line_layouts,
5427 line_height,
5428 em_width,
5429 cx,
5430 );
5431
5432 if !cx.has_active_drag() {
5433 self.layout_hover_popovers(
5434 &snapshot,
5435 &hitbox,
5436 &text_hitbox,
5437 start_row..end_row,
5438 content_origin,
5439 scroll_pixel_position,
5440 &line_layouts,
5441 line_height,
5442 em_width,
5443 cx,
5444 );
5445 }
5446
5447 let mouse_context_menu =
5448 self.layout_mouse_context_menu(&snapshot, start_row..end_row, cx);
5449
5450 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5451 self.prepaint_gutter_fold_toggles(
5452 &mut gutter_fold_toggles,
5453 line_height,
5454 &gutter_dimensions,
5455 gutter_settings,
5456 scroll_pixel_position,
5457 &gutter_hitbox,
5458 cx,
5459 )
5460 });
5461
5462 let invisible_symbol_font_size = font_size / 2.;
5463 let tab_invisible = cx
5464 .text_system()
5465 .shape_line(
5466 "→".into(),
5467 invisible_symbol_font_size,
5468 &[TextRun {
5469 len: "→".len(),
5470 font: self.style.text.font(),
5471 color: cx.theme().colors().editor_invisible,
5472 background_color: None,
5473 underline: None,
5474 strikethrough: None,
5475 }],
5476 )
5477 .unwrap();
5478 let space_invisible = cx
5479 .text_system()
5480 .shape_line(
5481 "•".into(),
5482 invisible_symbol_font_size,
5483 &[TextRun {
5484 len: "•".len(),
5485 font: self.style.text.font(),
5486 color: cx.theme().colors().editor_invisible,
5487 background_color: None,
5488 underline: None,
5489 strikethrough: None,
5490 }],
5491 )
5492 .unwrap();
5493
5494 EditorLayout {
5495 mode: snapshot.mode,
5496 position_map: Rc::new(PositionMap {
5497 size: bounds.size,
5498 scroll_pixel_position,
5499 scroll_max,
5500 line_layouts,
5501 line_height,
5502 em_width,
5503 em_advance,
5504 snapshot,
5505 }),
5506 visible_display_row_range: start_row..end_row,
5507 wrap_guides,
5508 indent_guides,
5509 hitbox,
5510 text_hitbox,
5511 gutter_hitbox,
5512 gutter_dimensions,
5513 display_hunks,
5514 content_origin,
5515 scrollbar_layout,
5516 active_rows,
5517 highlighted_rows,
5518 highlighted_ranges,
5519 highlighted_gutter_ranges,
5520 redacted_ranges,
5521 line_elements,
5522 line_numbers,
5523 blamed_display_rows,
5524 inline_blame,
5525 blocks,
5526 cursors,
5527 visible_cursors,
5528 selections,
5529 mouse_context_menu,
5530 test_indicators,
5531 close_indicators,
5532 code_actions_indicator,
5533 gutter_fold_toggles,
5534 crease_trailers,
5535 tab_invisible,
5536 space_invisible,
5537 }
5538 })
5539 })
5540 })
5541 }
5542
5543 fn paint(
5544 &mut self,
5545 _: Option<&GlobalElementId>,
5546 bounds: Bounds<gpui::Pixels>,
5547 _: &mut Self::RequestLayoutState,
5548 layout: &mut Self::PrepaintState,
5549 cx: &mut WindowContext,
5550 ) {
5551 let focus_handle = self.editor.focus_handle(cx);
5552 let key_context = self.editor.read(cx).key_context(cx);
5553 cx.set_key_context(key_context);
5554 cx.handle_input(
5555 &focus_handle,
5556 ElementInputHandler::new(bounds, self.editor.clone()),
5557 );
5558 self.register_actions(cx);
5559 self.register_key_listeners(cx, layout);
5560
5561 let text_style = TextStyleRefinement {
5562 font_size: Some(self.style.text.font_size),
5563 line_height: Some(self.style.text.line_height),
5564 ..Default::default()
5565 };
5566 let mouse_position = cx.mouse_position();
5567 let hovered_hunk = layout
5568 .display_hunks
5569 .iter()
5570 .find_map(|(hunk, hunk_hitbox)| match hunk {
5571 DisplayDiffHunk::Folded { .. } => None,
5572 DisplayDiffHunk::Unfolded {
5573 diff_base_byte_range,
5574 multi_buffer_range,
5575 status,
5576 ..
5577 } => {
5578 if hunk_hitbox
5579 .as_ref()
5580 .map(|hitbox| hitbox.contains(&mouse_position))
5581 .unwrap_or(false)
5582 {
5583 Some(HoveredHunk {
5584 status: *status,
5585 multi_buffer_range: multi_buffer_range.clone(),
5586 diff_base_byte_range: diff_base_byte_range.clone(),
5587 })
5588 } else {
5589 None
5590 }
5591 }
5592 });
5593 let rem_size = self.rem_size(cx);
5594 cx.with_rem_size(rem_size, |cx| {
5595 cx.with_text_style(Some(text_style), |cx| {
5596 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
5597 self.paint_mouse_listeners(layout, hovered_hunk, cx);
5598 self.paint_background(layout, cx);
5599 self.paint_indent_guides(layout, cx);
5600
5601 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5602 self.paint_blamed_display_rows(layout, cx);
5603 self.paint_line_numbers(layout, cx);
5604 }
5605
5606 self.paint_text(layout, cx);
5607
5608 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5609 self.paint_gutter_highlights(layout, cx);
5610 self.paint_gutter_indicators(layout, cx);
5611 }
5612
5613 if !layout.blocks.is_empty() {
5614 cx.with_element_namespace("blocks", |cx| {
5615 self.paint_blocks(layout, cx);
5616 });
5617 }
5618
5619 self.paint_scrollbar(layout, cx);
5620 self.paint_mouse_context_menu(layout, cx);
5621 });
5622 })
5623 })
5624 }
5625}
5626
5627pub(super) fn gutter_bounds(
5628 editor_bounds: Bounds<Pixels>,
5629 gutter_dimensions: GutterDimensions,
5630) -> Bounds<Pixels> {
5631 Bounds {
5632 origin: editor_bounds.origin,
5633 size: size(gutter_dimensions.width, editor_bounds.size.height),
5634 }
5635}
5636
5637impl IntoElement for EditorElement {
5638 type Element = Self;
5639
5640 fn into_element(self) -> Self::Element {
5641 self
5642 }
5643}
5644
5645pub struct EditorLayout {
5646 position_map: Rc<PositionMap>,
5647 hitbox: Hitbox,
5648 text_hitbox: Hitbox,
5649 gutter_hitbox: Hitbox,
5650 gutter_dimensions: GutterDimensions,
5651 content_origin: gpui::Point<Pixels>,
5652 scrollbar_layout: Option<ScrollbarLayout>,
5653 mode: EditorMode,
5654 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
5655 indent_guides: Option<Vec<IndentGuideLayout>>,
5656 visible_display_row_range: Range<DisplayRow>,
5657 active_rows: BTreeMap<DisplayRow, bool>,
5658 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
5659 line_elements: SmallVec<[AnyElement; 1]>,
5660 line_numbers: Vec<Option<ShapedLine>>,
5661 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
5662 blamed_display_rows: Option<Vec<AnyElement>>,
5663 inline_blame: Option<AnyElement>,
5664 blocks: Vec<BlockLayout>,
5665 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5666 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5667 redacted_ranges: Vec<Range<DisplayPoint>>,
5668 cursors: Vec<(DisplayPoint, Hsla)>,
5669 visible_cursors: Vec<CursorLayout>,
5670 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
5671 code_actions_indicator: Option<AnyElement>,
5672 test_indicators: Vec<AnyElement>,
5673 close_indicators: Vec<AnyElement>,
5674 gutter_fold_toggles: Vec<Option<AnyElement>>,
5675 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
5676 mouse_context_menu: Option<AnyElement>,
5677 tab_invisible: ShapedLine,
5678 space_invisible: ShapedLine,
5679}
5680
5681impl EditorLayout {
5682 fn line_end_overshoot(&self) -> Pixels {
5683 0.15 * self.position_map.line_height
5684 }
5685}
5686
5687struct ColoredRange<T> {
5688 start: T,
5689 end: T,
5690 color: Hsla,
5691}
5692
5693#[derive(Clone)]
5694struct ScrollbarLayout {
5695 hitbox: Hitbox,
5696 visible_row_range: Range<f32>,
5697 visible: bool,
5698 row_height: Pixels,
5699 thumb_height: Pixels,
5700}
5701
5702impl ScrollbarLayout {
5703 const BORDER_WIDTH: Pixels = px(1.0);
5704 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
5705 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
5706 const MIN_THUMB_HEIGHT: Pixels = px(20.0);
5707
5708 fn thumb_bounds(&self) -> Bounds<Pixels> {
5709 let thumb_top = self.y_for_row(self.visible_row_range.start);
5710 let thumb_bottom = thumb_top + self.thumb_height;
5711 Bounds::from_corners(
5712 point(self.hitbox.left(), thumb_top),
5713 point(self.hitbox.right(), thumb_bottom),
5714 )
5715 }
5716
5717 fn y_for_row(&self, row: f32) -> Pixels {
5718 self.hitbox.top() + row * self.row_height
5719 }
5720
5721 fn marker_quads_for_ranges(
5722 &self,
5723 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
5724 column: Option<usize>,
5725 ) -> Vec<PaintQuad> {
5726 struct MinMax {
5727 min: Pixels,
5728 max: Pixels,
5729 }
5730 let (x_range, height_limit) = if let Some(column) = column {
5731 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
5732 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
5733 let end = start + column_width;
5734 (
5735 Range { start, end },
5736 MinMax {
5737 min: Self::MIN_MARKER_HEIGHT,
5738 max: px(f32::MAX),
5739 },
5740 )
5741 } else {
5742 (
5743 Range {
5744 start: Self::BORDER_WIDTH,
5745 end: self.hitbox.size.width,
5746 },
5747 MinMax {
5748 min: Self::LINE_MARKER_HEIGHT,
5749 max: Self::LINE_MARKER_HEIGHT,
5750 },
5751 )
5752 };
5753
5754 let row_to_y = |row: DisplayRow| row.as_f32() * self.row_height;
5755 let mut pixel_ranges = row_ranges
5756 .into_iter()
5757 .map(|range| {
5758 let start_y = row_to_y(range.start);
5759 let end_y = row_to_y(range.end)
5760 + self.row_height.max(height_limit.min).min(height_limit.max);
5761 ColoredRange {
5762 start: start_y,
5763 end: end_y,
5764 color: range.color,
5765 }
5766 })
5767 .peekable();
5768
5769 let mut quads = Vec::new();
5770 while let Some(mut pixel_range) = pixel_ranges.next() {
5771 while let Some(next_pixel_range) = pixel_ranges.peek() {
5772 if pixel_range.end >= next_pixel_range.start - px(1.0)
5773 && pixel_range.color == next_pixel_range.color
5774 {
5775 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
5776 pixel_ranges.next();
5777 } else {
5778 break;
5779 }
5780 }
5781
5782 let bounds = Bounds::from_corners(
5783 point(x_range.start, pixel_range.start),
5784 point(x_range.end, pixel_range.end),
5785 );
5786 quads.push(quad(
5787 bounds,
5788 Corners::default(),
5789 pixel_range.color,
5790 Edges::default(),
5791 Hsla::transparent_black(),
5792 ));
5793 }
5794
5795 quads
5796 }
5797}
5798
5799struct CreaseTrailerLayout {
5800 element: AnyElement,
5801 bounds: Bounds<Pixels>,
5802}
5803
5804struct PositionMap {
5805 size: Size<Pixels>,
5806 line_height: Pixels,
5807 scroll_pixel_position: gpui::Point<Pixels>,
5808 scroll_max: gpui::Point<f32>,
5809 em_width: Pixels,
5810 em_advance: Pixels,
5811 line_layouts: Vec<LineWithInvisibles>,
5812 snapshot: EditorSnapshot,
5813}
5814
5815#[derive(Debug, Copy, Clone)]
5816pub struct PointForPosition {
5817 pub previous_valid: DisplayPoint,
5818 pub next_valid: DisplayPoint,
5819 pub exact_unclipped: DisplayPoint,
5820 pub column_overshoot_after_line_end: u32,
5821}
5822
5823impl PointForPosition {
5824 pub fn as_valid(&self) -> Option<DisplayPoint> {
5825 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
5826 Some(self.previous_valid)
5827 } else {
5828 None
5829 }
5830 }
5831}
5832
5833impl PositionMap {
5834 fn point_for_position(
5835 &self,
5836 text_bounds: Bounds<Pixels>,
5837 position: gpui::Point<Pixels>,
5838 ) -> PointForPosition {
5839 let scroll_position = self.snapshot.scroll_position();
5840 let position = position - text_bounds.origin;
5841 let y = position.y.max(px(0.)).min(self.size.height);
5842 let x = position.x + (scroll_position.x * self.em_width);
5843 let row = ((y / self.line_height) + scroll_position.y) as u32;
5844
5845 let (column, x_overshoot_after_line_end) = if let Some(line) = self
5846 .line_layouts
5847 .get(row as usize - scroll_position.y as usize)
5848 {
5849 if let Some(ix) = line.index_for_x(x) {
5850 (ix as u32, px(0.))
5851 } else {
5852 (line.len as u32, px(0.).max(x - line.width))
5853 }
5854 } else {
5855 (0, x)
5856 };
5857
5858 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
5859 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
5860 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
5861
5862 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
5863 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
5864 PointForPosition {
5865 previous_valid,
5866 next_valid,
5867 exact_unclipped,
5868 column_overshoot_after_line_end,
5869 }
5870 }
5871}
5872
5873struct BlockLayout {
5874 id: BlockId,
5875 row: DisplayRow,
5876 element: AnyElement,
5877 available_space: Size<AvailableSpace>,
5878 style: BlockStyle,
5879}
5880
5881fn layout_line(
5882 row: DisplayRow,
5883 snapshot: &EditorSnapshot,
5884 style: &EditorStyle,
5885 cx: &mut WindowContext,
5886) -> LineWithInvisibles {
5887 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
5888 LineWithInvisibles::from_chunks(chunks, &style.text, MAX_LINE_LEN, 1, &[], snapshot.mode, cx)
5889 .pop()
5890 .unwrap()
5891}
5892
5893#[derive(Debug)]
5894pub struct IndentGuideLayout {
5895 origin: gpui::Point<Pixels>,
5896 length: Pixels,
5897 single_indent_width: Pixels,
5898 depth: u32,
5899 active: bool,
5900 settings: IndentGuideSettings,
5901}
5902
5903pub struct CursorLayout {
5904 origin: gpui::Point<Pixels>,
5905 block_width: Pixels,
5906 line_height: Pixels,
5907 color: Hsla,
5908 shape: CursorShape,
5909 block_text: Option<ShapedLine>,
5910 cursor_name: Option<AnyElement>,
5911}
5912
5913#[derive(Debug)]
5914pub struct CursorName {
5915 string: SharedString,
5916 color: Hsla,
5917 is_top_row: bool,
5918}
5919
5920impl CursorLayout {
5921 pub fn new(
5922 origin: gpui::Point<Pixels>,
5923 block_width: Pixels,
5924 line_height: Pixels,
5925 color: Hsla,
5926 shape: CursorShape,
5927 block_text: Option<ShapedLine>,
5928 ) -> CursorLayout {
5929 CursorLayout {
5930 origin,
5931 block_width,
5932 line_height,
5933 color,
5934 shape,
5935 block_text,
5936 cursor_name: None,
5937 }
5938 }
5939
5940 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
5941 Bounds {
5942 origin: self.origin + origin,
5943 size: size(self.block_width, self.line_height),
5944 }
5945 }
5946
5947 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
5948 match self.shape {
5949 CursorShape::Bar => Bounds {
5950 origin: self.origin + origin,
5951 size: size(px(2.0), self.line_height),
5952 },
5953 CursorShape::Block | CursorShape::Hollow => Bounds {
5954 origin: self.origin + origin,
5955 size: size(self.block_width, self.line_height),
5956 },
5957 CursorShape::Underscore => Bounds {
5958 origin: self.origin
5959 + origin
5960 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
5961 size: size(self.block_width, px(2.0)),
5962 },
5963 }
5964 }
5965
5966 pub fn layout(
5967 &mut self,
5968 origin: gpui::Point<Pixels>,
5969 cursor_name: Option<CursorName>,
5970 cx: &mut WindowContext,
5971 ) {
5972 if let Some(cursor_name) = cursor_name {
5973 let bounds = self.bounds(origin);
5974 let text_size = self.line_height / 1.5;
5975
5976 let name_origin = if cursor_name.is_top_row {
5977 point(bounds.right() - px(1.), bounds.top())
5978 } else {
5979 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
5980 };
5981 let mut name_element = div()
5982 .bg(self.color)
5983 .text_size(text_size)
5984 .px_0p5()
5985 .line_height(text_size + px(2.))
5986 .text_color(cursor_name.color)
5987 .child(cursor_name.string.clone())
5988 .into_any_element();
5989
5990 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
5991
5992 self.cursor_name = Some(name_element);
5993 }
5994 }
5995
5996 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
5997 let bounds = self.bounds(origin);
5998
5999 //Draw background or border quad
6000 let cursor = if matches!(self.shape, CursorShape::Hollow) {
6001 outline(bounds, self.color)
6002 } else {
6003 fill(bounds, self.color)
6004 };
6005
6006 if let Some(name) = &mut self.cursor_name {
6007 name.paint(cx);
6008 }
6009
6010 cx.paint_quad(cursor);
6011
6012 if let Some(block_text) = &self.block_text {
6013 block_text
6014 .paint(self.origin + origin, self.line_height, cx)
6015 .log_err();
6016 }
6017 }
6018
6019 pub fn shape(&self) -> CursorShape {
6020 self.shape
6021 }
6022}
6023
6024#[derive(Debug)]
6025pub struct HighlightedRange {
6026 pub start_y: Pixels,
6027 pub line_height: Pixels,
6028 pub lines: Vec<HighlightedRangeLine>,
6029 pub color: Hsla,
6030 pub corner_radius: Pixels,
6031}
6032
6033#[derive(Debug)]
6034pub struct HighlightedRangeLine {
6035 pub start_x: Pixels,
6036 pub end_x: Pixels,
6037}
6038
6039impl HighlightedRange {
6040 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
6041 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
6042 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
6043 self.paint_lines(
6044 self.start_y + self.line_height,
6045 &self.lines[1..],
6046 bounds,
6047 cx,
6048 );
6049 } else {
6050 self.paint_lines(self.start_y, &self.lines, bounds, cx);
6051 }
6052 }
6053
6054 fn paint_lines(
6055 &self,
6056 start_y: Pixels,
6057 lines: &[HighlightedRangeLine],
6058 _bounds: Bounds<Pixels>,
6059 cx: &mut WindowContext,
6060 ) {
6061 if lines.is_empty() {
6062 return;
6063 }
6064
6065 let first_line = lines.first().unwrap();
6066 let last_line = lines.last().unwrap();
6067
6068 let first_top_left = point(first_line.start_x, start_y);
6069 let first_top_right = point(first_line.end_x, start_y);
6070
6071 let curve_height = point(Pixels::ZERO, self.corner_radius);
6072 let curve_width = |start_x: Pixels, end_x: Pixels| {
6073 let max = (end_x - start_x) / 2.;
6074 let width = if max < self.corner_radius {
6075 max
6076 } else {
6077 self.corner_radius
6078 };
6079
6080 point(width, Pixels::ZERO)
6081 };
6082
6083 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
6084 let mut path = gpui::Path::new(first_top_right - top_curve_width);
6085 path.curve_to(first_top_right + curve_height, first_top_right);
6086
6087 let mut iter = lines.iter().enumerate().peekable();
6088 while let Some((ix, line)) = iter.next() {
6089 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
6090
6091 if let Some((_, next_line)) = iter.peek() {
6092 let next_top_right = point(next_line.end_x, bottom_right.y);
6093
6094 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
6095 Ordering::Equal => {
6096 path.line_to(bottom_right);
6097 }
6098 Ordering::Less => {
6099 let curve_width = curve_width(next_top_right.x, bottom_right.x);
6100 path.line_to(bottom_right - curve_height);
6101 if self.corner_radius > Pixels::ZERO {
6102 path.curve_to(bottom_right - curve_width, bottom_right);
6103 }
6104 path.line_to(next_top_right + curve_width);
6105 if self.corner_radius > Pixels::ZERO {
6106 path.curve_to(next_top_right + curve_height, next_top_right);
6107 }
6108 }
6109 Ordering::Greater => {
6110 let curve_width = curve_width(bottom_right.x, next_top_right.x);
6111 path.line_to(bottom_right - curve_height);
6112 if self.corner_radius > Pixels::ZERO {
6113 path.curve_to(bottom_right + curve_width, bottom_right);
6114 }
6115 path.line_to(next_top_right - curve_width);
6116 if self.corner_radius > Pixels::ZERO {
6117 path.curve_to(next_top_right + curve_height, next_top_right);
6118 }
6119 }
6120 }
6121 } else {
6122 let curve_width = curve_width(line.start_x, line.end_x);
6123 path.line_to(bottom_right - curve_height);
6124 if self.corner_radius > Pixels::ZERO {
6125 path.curve_to(bottom_right - curve_width, bottom_right);
6126 }
6127
6128 let bottom_left = point(line.start_x, bottom_right.y);
6129 path.line_to(bottom_left + curve_width);
6130 if self.corner_radius > Pixels::ZERO {
6131 path.curve_to(bottom_left - curve_height, bottom_left);
6132 }
6133 }
6134 }
6135
6136 if first_line.start_x > last_line.start_x {
6137 let curve_width = curve_width(last_line.start_x, first_line.start_x);
6138 let second_top_left = point(last_line.start_x, start_y + self.line_height);
6139 path.line_to(second_top_left + curve_height);
6140 if self.corner_radius > Pixels::ZERO {
6141 path.curve_to(second_top_left + curve_width, second_top_left);
6142 }
6143 let first_bottom_left = point(first_line.start_x, second_top_left.y);
6144 path.line_to(first_bottom_left - curve_width);
6145 if self.corner_radius > Pixels::ZERO {
6146 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
6147 }
6148 }
6149
6150 path.line_to(first_top_left + curve_height);
6151 if self.corner_radius > Pixels::ZERO {
6152 path.curve_to(first_top_left + top_curve_width, first_top_left);
6153 }
6154 path.line_to(first_top_right - top_curve_width);
6155
6156 cx.paint_path(path, self.color);
6157 }
6158}
6159
6160pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6161 (delta.pow(1.5) / 100.0).into()
6162}
6163
6164fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6165 (delta.pow(1.2) / 300.0).into()
6166}
6167
6168#[cfg(test)]
6169mod tests {
6170 use super::*;
6171 use crate::{
6172 display_map::{BlockDisposition, BlockProperties},
6173 editor_tests::{init_test, update_test_language_settings},
6174 Editor, MultiBuffer,
6175 };
6176 use gpui::{TestAppContext, VisualTestContext};
6177 use language::language_settings;
6178 use log::info;
6179 use std::num::NonZeroU32;
6180 use ui::Context;
6181 use util::test::sample_text;
6182
6183 #[gpui::test]
6184 fn test_shape_line_numbers(cx: &mut TestAppContext) {
6185 init_test(cx, |_| {});
6186 let window = cx.add_window(|cx| {
6187 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6188 Editor::new(EditorMode::Full, buffer, None, true, cx)
6189 });
6190
6191 let editor = window.root(cx).unwrap();
6192 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6193 let element = EditorElement::new(&editor, style);
6194 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
6195
6196 let layouts = cx
6197 .update_window(*window, |_, cx| {
6198 element.layout_line_numbers(
6199 DisplayRow(0)..DisplayRow(6),
6200 (0..6).map(MultiBufferRow).map(Some),
6201 &Default::default(),
6202 Some(DisplayPoint::new(DisplayRow(0), 0)),
6203 &snapshot,
6204 cx,
6205 )
6206 })
6207 .unwrap();
6208 assert_eq!(layouts.len(), 6);
6209
6210 let relative_rows = window
6211 .update(cx, |editor, cx| {
6212 let snapshot = editor.snapshot(cx);
6213 element.calculate_relative_line_numbers(
6214 &snapshot,
6215 &(DisplayRow(0)..DisplayRow(6)),
6216 Some(DisplayRow(3)),
6217 )
6218 })
6219 .unwrap();
6220 assert_eq!(relative_rows[&DisplayRow(0)], 3);
6221 assert_eq!(relative_rows[&DisplayRow(1)], 2);
6222 assert_eq!(relative_rows[&DisplayRow(2)], 1);
6223 // current line has no relative number
6224 assert_eq!(relative_rows[&DisplayRow(4)], 1);
6225 assert_eq!(relative_rows[&DisplayRow(5)], 2);
6226
6227 // works if cursor is before screen
6228 let relative_rows = window
6229 .update(cx, |editor, cx| {
6230 let snapshot = editor.snapshot(cx);
6231 element.calculate_relative_line_numbers(
6232 &snapshot,
6233 &(DisplayRow(3)..DisplayRow(6)),
6234 Some(DisplayRow(1)),
6235 )
6236 })
6237 .unwrap();
6238 assert_eq!(relative_rows.len(), 3);
6239 assert_eq!(relative_rows[&DisplayRow(3)], 2);
6240 assert_eq!(relative_rows[&DisplayRow(4)], 3);
6241 assert_eq!(relative_rows[&DisplayRow(5)], 4);
6242
6243 // works if cursor is after screen
6244 let relative_rows = window
6245 .update(cx, |editor, cx| {
6246 let snapshot = editor.snapshot(cx);
6247 element.calculate_relative_line_numbers(
6248 &snapshot,
6249 &(DisplayRow(0)..DisplayRow(3)),
6250 Some(DisplayRow(6)),
6251 )
6252 })
6253 .unwrap();
6254 assert_eq!(relative_rows.len(), 3);
6255 assert_eq!(relative_rows[&DisplayRow(0)], 5);
6256 assert_eq!(relative_rows[&DisplayRow(1)], 4);
6257 assert_eq!(relative_rows[&DisplayRow(2)], 3);
6258 }
6259
6260 #[gpui::test]
6261 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
6262 init_test(cx, |_| {});
6263
6264 let window = cx.add_window(|cx| {
6265 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
6266 Editor::new(EditorMode::Full, buffer, None, true, cx)
6267 });
6268 let cx = &mut VisualTestContext::from_window(*window, cx);
6269 let editor = window.root(cx).unwrap();
6270 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6271
6272 window
6273 .update(cx, |editor, cx| {
6274 editor.cursor_shape = CursorShape::Block;
6275 editor.change_selections(None, cx, |s| {
6276 s.select_ranges([
6277 Point::new(0, 0)..Point::new(1, 0),
6278 Point::new(3, 2)..Point::new(3, 3),
6279 Point::new(5, 6)..Point::new(6, 0),
6280 ]);
6281 });
6282 })
6283 .unwrap();
6284
6285 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6286 EditorElement::new(&editor, style)
6287 });
6288
6289 assert_eq!(state.selections.len(), 1);
6290 let local_selections = &state.selections[0].1;
6291 assert_eq!(local_selections.len(), 3);
6292 // moves cursor back one line
6293 assert_eq!(
6294 local_selections[0].head,
6295 DisplayPoint::new(DisplayRow(0), 6)
6296 );
6297 assert_eq!(
6298 local_selections[0].range,
6299 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
6300 );
6301
6302 // moves cursor back one column
6303 assert_eq!(
6304 local_selections[1].range,
6305 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
6306 );
6307 assert_eq!(
6308 local_selections[1].head,
6309 DisplayPoint::new(DisplayRow(3), 2)
6310 );
6311
6312 // leaves cursor on the max point
6313 assert_eq!(
6314 local_selections[2].range,
6315 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
6316 );
6317 assert_eq!(
6318 local_selections[2].head,
6319 DisplayPoint::new(DisplayRow(6), 0)
6320 );
6321
6322 // active lines does not include 1 (even though the range of the selection does)
6323 assert_eq!(
6324 state.active_rows.keys().cloned().collect::<Vec<_>>(),
6325 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
6326 );
6327
6328 // multi-buffer support
6329 // in DisplayPoint coordinates, this is what we're dealing with:
6330 // 0: [[file
6331 // 1: header
6332 // 2: section]]
6333 // 3: aaaaaa
6334 // 4: bbbbbb
6335 // 5: cccccc
6336 // 6:
6337 // 7: [[footer]]
6338 // 8: [[header]]
6339 // 9: ffffff
6340 // 10: gggggg
6341 // 11: hhhhhh
6342 // 12:
6343 // 13: [[footer]]
6344 // 14: [[file
6345 // 15: header
6346 // 16: section]]
6347 // 17: bbbbbb
6348 // 18: cccccc
6349 // 19: dddddd
6350 // 20: [[footer]]
6351 let window = cx.add_window(|cx| {
6352 let buffer = MultiBuffer::build_multi(
6353 [
6354 (
6355 &(sample_text(8, 6, 'a') + "\n"),
6356 vec![
6357 Point::new(0, 0)..Point::new(3, 0),
6358 Point::new(4, 0)..Point::new(7, 0),
6359 ],
6360 ),
6361 (
6362 &(sample_text(8, 6, 'a') + "\n"),
6363 vec![Point::new(1, 0)..Point::new(3, 0)],
6364 ),
6365 ],
6366 cx,
6367 );
6368 Editor::new(EditorMode::Full, buffer, None, true, cx)
6369 });
6370 let editor = window.root(cx).unwrap();
6371 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6372 let _state = window.update(cx, |editor, cx| {
6373 editor.cursor_shape = CursorShape::Block;
6374 editor.change_selections(None, cx, |s| {
6375 s.select_display_ranges([
6376 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
6377 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
6378 ]);
6379 });
6380 });
6381
6382 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6383 EditorElement::new(&editor, style)
6384 });
6385 assert_eq!(state.selections.len(), 1);
6386 let local_selections = &state.selections[0].1;
6387 assert_eq!(local_selections.len(), 2);
6388
6389 // moves cursor on excerpt boundary back a line
6390 // and doesn't allow selection to bleed through
6391 assert_eq!(
6392 local_selections[0].range,
6393 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
6394 );
6395 assert_eq!(
6396 local_selections[0].head,
6397 DisplayPoint::new(DisplayRow(6), 0)
6398 );
6399 // moves cursor on buffer boundary back two lines
6400 // and doesn't allow selection to bleed through
6401 assert_eq!(
6402 local_selections[1].range,
6403 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
6404 );
6405 assert_eq!(
6406 local_selections[1].head,
6407 DisplayPoint::new(DisplayRow(12), 0)
6408 );
6409 }
6410
6411 #[gpui::test]
6412 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
6413 init_test(cx, |_| {});
6414
6415 let window = cx.add_window(|cx| {
6416 let buffer = MultiBuffer::build_simple("", cx);
6417 Editor::new(EditorMode::Full, buffer, None, true, cx)
6418 });
6419 let cx = &mut VisualTestContext::from_window(*window, cx);
6420 let editor = window.root(cx).unwrap();
6421 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6422 window
6423 .update(cx, |editor, cx| {
6424 editor.set_placeholder_text("hello", cx);
6425 editor.insert_blocks(
6426 [BlockProperties {
6427 style: BlockStyle::Fixed,
6428 disposition: BlockDisposition::Above,
6429 height: 3,
6430 position: Anchor::min(),
6431 render: Box::new(|_| div().into_any()),
6432 }],
6433 None,
6434 cx,
6435 );
6436
6437 // Blur the editor so that it displays placeholder text.
6438 cx.blur();
6439 })
6440 .unwrap();
6441
6442 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6443 EditorElement::new(&editor, style)
6444 });
6445 assert_eq!(state.position_map.line_layouts.len(), 4);
6446 assert_eq!(
6447 state
6448 .line_numbers
6449 .iter()
6450 .map(Option::is_some)
6451 .collect::<Vec<_>>(),
6452 &[false, false, false, true]
6453 );
6454 }
6455
6456 #[gpui::test]
6457 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
6458 const TAB_SIZE: u32 = 4;
6459
6460 let input_text = "\t \t|\t| a b";
6461 let expected_invisibles = vec![
6462 Invisible::Tab {
6463 line_start_offset: 0,
6464 line_end_offset: TAB_SIZE as usize,
6465 },
6466 Invisible::Whitespace {
6467 line_offset: TAB_SIZE as usize,
6468 },
6469 Invisible::Tab {
6470 line_start_offset: TAB_SIZE as usize + 1,
6471 line_end_offset: TAB_SIZE as usize * 2,
6472 },
6473 Invisible::Tab {
6474 line_start_offset: TAB_SIZE as usize * 2 + 1,
6475 line_end_offset: TAB_SIZE as usize * 3,
6476 },
6477 Invisible::Whitespace {
6478 line_offset: TAB_SIZE as usize * 3 + 1,
6479 },
6480 Invisible::Whitespace {
6481 line_offset: TAB_SIZE as usize * 3 + 3,
6482 },
6483 ];
6484 assert_eq!(
6485 expected_invisibles.len(),
6486 input_text
6487 .chars()
6488 .filter(|initial_char| initial_char.is_whitespace())
6489 .count(),
6490 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6491 );
6492
6493 init_test(cx, |s| {
6494 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6495 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
6496 });
6497
6498 let actual_invisibles =
6499 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
6500
6501 assert_eq!(expected_invisibles, actual_invisibles);
6502 }
6503
6504 #[gpui::test]
6505 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
6506 init_test(cx, |s| {
6507 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6508 s.defaults.tab_size = NonZeroU32::new(4);
6509 });
6510
6511 for editor_mode_without_invisibles in [
6512 EditorMode::SingleLine { auto_width: false },
6513 EditorMode::AutoHeight { max_lines: 100 },
6514 ] {
6515 let invisibles = collect_invisibles_from_new_editor(
6516 cx,
6517 editor_mode_without_invisibles,
6518 "\t\t\t| | a b",
6519 px(500.0),
6520 );
6521 assert!(invisibles.is_empty(),
6522 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
6523 }
6524 }
6525
6526 #[gpui::test]
6527 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
6528 let tab_size = 4;
6529 let input_text = "a\tbcd ".repeat(9);
6530 let repeated_invisibles = [
6531 Invisible::Tab {
6532 line_start_offset: 1,
6533 line_end_offset: tab_size as usize,
6534 },
6535 Invisible::Whitespace {
6536 line_offset: tab_size as usize + 3,
6537 },
6538 Invisible::Whitespace {
6539 line_offset: tab_size as usize + 4,
6540 },
6541 Invisible::Whitespace {
6542 line_offset: tab_size as usize + 5,
6543 },
6544 Invisible::Whitespace {
6545 line_offset: tab_size as usize + 6,
6546 },
6547 Invisible::Whitespace {
6548 line_offset: tab_size as usize + 7,
6549 },
6550 ];
6551 let expected_invisibles = std::iter::once(repeated_invisibles)
6552 .cycle()
6553 .take(9)
6554 .flatten()
6555 .collect::<Vec<_>>();
6556 assert_eq!(
6557 expected_invisibles.len(),
6558 input_text
6559 .chars()
6560 .filter(|initial_char| initial_char.is_whitespace())
6561 .count(),
6562 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6563 );
6564 info!("Expected invisibles: {expected_invisibles:?}");
6565
6566 init_test(cx, |_| {});
6567
6568 // Put the same string with repeating whitespace pattern into editors of various size,
6569 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
6570 let resize_step = 10.0;
6571 let mut editor_width = 200.0;
6572 while editor_width <= 1000.0 {
6573 update_test_language_settings(cx, |s| {
6574 s.defaults.tab_size = NonZeroU32::new(tab_size);
6575 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6576 s.defaults.preferred_line_length = Some(editor_width as u32);
6577 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
6578 });
6579
6580 let actual_invisibles = collect_invisibles_from_new_editor(
6581 cx,
6582 EditorMode::Full,
6583 &input_text,
6584 px(editor_width),
6585 );
6586
6587 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
6588 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
6589 let mut i = 0;
6590 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
6591 i = actual_index;
6592 match expected_invisibles.get(i) {
6593 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
6594 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
6595 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
6596 _ => {
6597 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
6598 }
6599 },
6600 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
6601 }
6602 }
6603 let missing_expected_invisibles = &expected_invisibles[i + 1..];
6604 assert!(
6605 missing_expected_invisibles.is_empty(),
6606 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
6607 );
6608
6609 editor_width += resize_step;
6610 }
6611 }
6612
6613 fn collect_invisibles_from_new_editor(
6614 cx: &mut TestAppContext,
6615 editor_mode: EditorMode,
6616 input_text: &str,
6617 editor_width: Pixels,
6618 ) -> Vec<Invisible> {
6619 info!(
6620 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
6621 editor_width.0
6622 );
6623 let window = cx.add_window(|cx| {
6624 let buffer = MultiBuffer::build_simple(&input_text, cx);
6625 Editor::new(editor_mode, buffer, None, true, cx)
6626 });
6627 let cx = &mut VisualTestContext::from_window(*window, cx);
6628 let editor = window.root(cx).unwrap();
6629 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6630 window
6631 .update(cx, |editor, cx| {
6632 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
6633 editor.set_wrap_width(Some(editor_width), cx);
6634 })
6635 .unwrap();
6636 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6637 EditorElement::new(&editor, style)
6638 });
6639 state
6640 .position_map
6641 .line_layouts
6642 .iter()
6643 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
6644 .cloned()
6645 .collect()
6646 }
6647}
6648
6649pub fn register_action<T: Action>(
6650 view: &View<Editor>,
6651 cx: &mut WindowContext,
6652 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
6653) {
6654 let view = view.clone();
6655 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
6656 let action = action.downcast_ref().unwrap();
6657 if phase == DispatchPhase::Bubble {
6658 view.update(cx, |editor, cx| {
6659 listener(editor, action, cx);
6660 })
6661 }
6662 })
6663}
6664
6665fn compute_auto_height_layout(
6666 editor: &mut Editor,
6667 max_lines: usize,
6668 max_line_number_width: Pixels,
6669 known_dimensions: Size<Option<Pixels>>,
6670 available_width: AvailableSpace,
6671 cx: &mut ViewContext<Editor>,
6672) -> Option<Size<Pixels>> {
6673 let width = known_dimensions.width.or_else(|| {
6674 if let AvailableSpace::Definite(available_width) = available_width {
6675 Some(available_width)
6676 } else {
6677 None
6678 }
6679 })?;
6680 if let Some(height) = known_dimensions.height {
6681 return Some(size(width, height));
6682 }
6683
6684 let style = editor.style.as_ref().unwrap();
6685 let font_id = cx.text_system().resolve_font(&style.text.font());
6686 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6687 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6688 let em_width = cx
6689 .text_system()
6690 .typographic_bounds(font_id, font_size, 'm')
6691 .unwrap()
6692 .size
6693 .width;
6694
6695 let mut snapshot = editor.snapshot(cx);
6696 let gutter_dimensions =
6697 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
6698
6699 editor.gutter_dimensions = gutter_dimensions;
6700 let text_width = width - gutter_dimensions.width;
6701 let overscroll = size(em_width, px(0.));
6702
6703 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
6704 if editor.set_wrap_width(Some(editor_width), cx) {
6705 snapshot = editor.snapshot(cx);
6706 }
6707
6708 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
6709 let height = scroll_height
6710 .max(line_height)
6711 .min(line_height * max_lines as f32);
6712
6713 Some(size(width, height))
6714}