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 .cursor(CursorStyle::Arrow)
1974 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
1975 .into_any_element()
1976 }
1977
1978 Block::ExcerptHeader {
1979 buffer,
1980 range,
1981 starts_new_buffer,
1982 height,
1983 id,
1984 show_excerpt_controls,
1985 ..
1986 } => {
1987 let include_root = self
1988 .editor
1989 .read(cx)
1990 .project
1991 .as_ref()
1992 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1993 .unwrap_or_default();
1994
1995 #[derive(Clone)]
1996 struct JumpData {
1997 position: Point,
1998 anchor: text::Anchor,
1999 path: ProjectPath,
2000 line_offset_from_top: u32,
2001 }
2002
2003 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
2004 let jump_path = ProjectPath {
2005 worktree_id: file.worktree_id(cx),
2006 path: file.path.clone(),
2007 };
2008 let jump_anchor = range
2009 .primary
2010 .as_ref()
2011 .map_or(range.context.start, |primary| primary.start);
2012
2013 let excerpt_start = range.context.start;
2014 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2015 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
2016 0
2017 } else {
2018 let excerpt_start_row =
2019 language::ToPoint::to_point(&jump_anchor, buffer).row;
2020 jump_position.row - excerpt_start_row
2021 };
2022
2023 let line_offset_from_top =
2024 block_row_start.0 + *height as u32 + offset_from_excerpt_start
2025 - snapshot
2026 .scroll_anchor
2027 .scroll_position(&snapshot.display_snapshot)
2028 .y as u32;
2029
2030 JumpData {
2031 position: jump_position,
2032 anchor: jump_anchor,
2033 path: jump_path,
2034 line_offset_from_top,
2035 }
2036 });
2037
2038 let icon_offset = gutter_dimensions.width
2039 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2040
2041 let element = if *starts_new_buffer {
2042 let path = buffer.resolve_file_path(cx, include_root);
2043 let mut filename = None;
2044 let mut parent_path = None;
2045 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2046 if let Some(path) = path {
2047 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2048 parent_path = path
2049 .parent()
2050 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2051 }
2052
2053 let header_padding = px(6.0);
2054
2055 v_flex()
2056 .id(("path excerpt header", EntityId::from(block_id)))
2057 .size_full()
2058 .p(header_padding)
2059 .child(
2060 h_flex()
2061 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2062 .id("path header block")
2063 .pl(gpui::px(12.))
2064 .pr(gpui::px(8.))
2065 .rounded_md()
2066 .shadow_md()
2067 .border_1()
2068 .border_color(cx.theme().colors().border)
2069 .bg(cx.theme().colors().editor_subheader_background)
2070 .justify_between()
2071 .hover(|style| style.bg(cx.theme().colors().element_hover))
2072 .child(
2073 h_flex().gap_3().child(
2074 h_flex()
2075 .gap_2()
2076 .child(
2077 filename
2078 .map(SharedString::from)
2079 .unwrap_or_else(|| "untitled".into()),
2080 )
2081 .when_some(parent_path, |then, path| {
2082 then.child(
2083 div()
2084 .child(path)
2085 .text_color(cx.theme().colors().text_muted),
2086 )
2087 }),
2088 ),
2089 )
2090 .when_some(jump_data.clone(), |el, jump_data| {
2091 el.child(Icon::new(IconName::ArrowUpRight))
2092 .cursor_pointer()
2093 .tooltip(|cx| {
2094 Tooltip::for_action("Jump to File", &OpenExcerpts, cx)
2095 })
2096 .on_mouse_down(MouseButton::Left, |_, cx| {
2097 cx.stop_propagation()
2098 })
2099 .on_click(cx.listener_for(&self.editor, {
2100 move |editor, _, cx| {
2101 editor.jump(
2102 jump_data.path.clone(),
2103 jump_data.position,
2104 jump_data.anchor,
2105 jump_data.line_offset_from_top,
2106 cx,
2107 );
2108 }
2109 }))
2110 }),
2111 )
2112 .children(show_excerpt_controls.then(|| {
2113 h_flex()
2114 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.333)))
2115 .pt_1()
2116 .justify_end()
2117 .flex_none()
2118 .w(icon_offset - header_padding)
2119 .child(
2120 ButtonLike::new("expand-icon")
2121 .style(ButtonStyle::Transparent)
2122 .child(
2123 svg()
2124 .path(IconName::ArrowUpFromLine.path())
2125 .size(IconSize::XSmall.rems())
2126 .text_color(cx.theme().colors().editor_line_number)
2127 .group("")
2128 .hover(|style| {
2129 style.text_color(
2130 cx.theme()
2131 .colors()
2132 .editor_active_line_number,
2133 )
2134 }),
2135 )
2136 .on_click(cx.listener_for(&self.editor, {
2137 let id = *id;
2138 move |editor, _, cx| {
2139 editor.expand_excerpt(
2140 id,
2141 multi_buffer::ExpandExcerptDirection::Up,
2142 cx,
2143 );
2144 }
2145 }))
2146 .tooltip({
2147 move |cx| {
2148 Tooltip::for_action(
2149 "Expand Excerpt",
2150 &ExpandExcerpts { lines: 0 },
2151 cx,
2152 )
2153 }
2154 }),
2155 )
2156 }))
2157 } else {
2158 v_flex()
2159 .id(("excerpt header", EntityId::from(block_id)))
2160 .size_full()
2161 .child(
2162 div()
2163 .flex()
2164 .v_flex()
2165 .justify_start()
2166 .id("jump to collapsed context")
2167 .w(relative(1.0))
2168 .h_full()
2169 .child(
2170 div()
2171 .h_px()
2172 .w_full()
2173 .bg(cx.theme().colors().border_variant)
2174 .group_hover("excerpt-jump-action", |style| {
2175 style.bg(cx.theme().colors().border)
2176 }),
2177 ),
2178 )
2179 .child(
2180 h_flex()
2181 .justify_end()
2182 .flex_none()
2183 .w(icon_offset)
2184 .h_full()
2185 .child(
2186 show_excerpt_controls
2187 .then(|| {
2188 ButtonLike::new("expand-icon")
2189 .style(ButtonStyle::Transparent)
2190 .child(
2191 svg()
2192 .path(IconName::ArrowUpFromLine.path())
2193 .size(IconSize::XSmall.rems())
2194 .text_color(
2195 cx.theme().colors().editor_line_number,
2196 )
2197 .group("")
2198 .hover(|style| {
2199 style.text_color(
2200 cx.theme()
2201 .colors()
2202 .editor_active_line_number,
2203 )
2204 }),
2205 )
2206 .on_click(cx.listener_for(&self.editor, {
2207 let id = *id;
2208 move |editor, _, cx| {
2209 editor.expand_excerpt(
2210 id,
2211 multi_buffer::ExpandExcerptDirection::Up,
2212 cx,
2213 );
2214 }
2215 }))
2216 .tooltip({
2217 move |cx| {
2218 Tooltip::for_action(
2219 "Expand Excerpt",
2220 &ExpandExcerpts { lines: 0 },
2221 cx,
2222 )
2223 }
2224 })
2225 })
2226 .unwrap_or_else(|| {
2227 ButtonLike::new("jump-icon")
2228 .style(ButtonStyle::Transparent)
2229 .child(
2230 svg()
2231 .path(IconName::ArrowUpRight.path())
2232 .size(IconSize::XSmall.rems())
2233 .text_color(
2234 cx.theme().colors().border_variant,
2235 )
2236 .group("excerpt-jump-action")
2237 .group_hover(
2238 "excerpt-jump-action",
2239 |style| {
2240 style.text_color(
2241 cx.theme().colors().border,
2242 )
2243 },
2244 ),
2245 )
2246 .when_some(jump_data.clone(), |this, jump_data| {
2247 this.on_click(cx.listener_for(&self.editor, {
2248 let path = jump_data.path.clone();
2249 move |editor, _, cx| {
2250 cx.stop_propagation();
2251
2252 editor.jump(
2253 path.clone(),
2254 jump_data.position,
2255 jump_data.anchor,
2256 jump_data.line_offset_from_top,
2257 cx,
2258 );
2259 }
2260 }))
2261 .tooltip(move |cx| {
2262 Tooltip::for_action(
2263 format!(
2264 "Jump to {}:L{}",
2265 jump_data.path.path.display(),
2266 jump_data.position.row + 1
2267 ),
2268 &OpenExcerpts,
2269 cx,
2270 )
2271 })
2272 })
2273 }),
2274 ),
2275 )
2276 .group("excerpt-jump-action")
2277 .cursor_pointer()
2278 .when_some(jump_data.clone(), |this, jump_data| {
2279 this.on_click(cx.listener_for(&self.editor, {
2280 let path = jump_data.path.clone();
2281 move |editor, _, cx| {
2282 cx.stop_propagation();
2283
2284 editor.jump(
2285 path.clone(),
2286 jump_data.position,
2287 jump_data.anchor,
2288 jump_data.line_offset_from_top,
2289 cx,
2290 );
2291 }
2292 }))
2293 .tooltip(move |cx| {
2294 Tooltip::for_action(
2295 format!(
2296 "Jump to {}:L{}",
2297 jump_data.path.path.display(),
2298 jump_data.position.row + 1
2299 ),
2300 &OpenExcerpts,
2301 cx,
2302 )
2303 })
2304 })
2305 };
2306 element.into_any()
2307 }
2308
2309 Block::ExcerptFooter { id, .. } => {
2310 let element = v_flex()
2311 .id(("excerpt footer", EntityId::from(block_id)))
2312 .size_full()
2313 .child(
2314 h_flex()
2315 .justify_end()
2316 .flex_none()
2317 .w(gutter_dimensions.width
2318 - (gutter_dimensions.left_padding + gutter_dimensions.margin))
2319 .h_full()
2320 .child(
2321 ButtonLike::new("expand-icon")
2322 .style(ButtonStyle::Transparent)
2323 .child(
2324 svg()
2325 .path(IconName::ArrowDownFromLine.path())
2326 .size(IconSize::XSmall.rems())
2327 .text_color(cx.theme().colors().editor_line_number)
2328 .group("")
2329 .hover(|style| {
2330 style.text_color(
2331 cx.theme().colors().editor_active_line_number,
2332 )
2333 }),
2334 )
2335 .on_click(cx.listener_for(&self.editor, {
2336 let id = *id;
2337 move |editor, _, cx| {
2338 editor.expand_excerpt(
2339 id,
2340 multi_buffer::ExpandExcerptDirection::Down,
2341 cx,
2342 );
2343 }
2344 }))
2345 .tooltip({
2346 move |cx| {
2347 Tooltip::for_action(
2348 "Expand Excerpt",
2349 &ExpandExcerpts { lines: 0 },
2350 cx,
2351 )
2352 }
2353 }),
2354 ),
2355 );
2356 element.into_any()
2357 }
2358 };
2359
2360 let size = element.layout_as_root(available_space, cx);
2361 (element, size)
2362 }
2363
2364 #[allow(clippy::too_many_arguments)]
2365 fn render_blocks(
2366 &self,
2367 rows: Range<DisplayRow>,
2368 snapshot: &EditorSnapshot,
2369 hitbox: &Hitbox,
2370 text_hitbox: &Hitbox,
2371 scroll_width: &mut Pixels,
2372 gutter_dimensions: &GutterDimensions,
2373 em_width: Pixels,
2374 text_x: Pixels,
2375 line_height: Pixels,
2376 line_layouts: &[LineWithInvisibles],
2377 cx: &mut WindowContext,
2378 ) -> Vec<BlockLayout> {
2379 let (fixed_blocks, non_fixed_blocks) = snapshot
2380 .blocks_in_range(rows.clone())
2381 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2382
2383 let mut focused_block = self
2384 .editor
2385 .update(cx, |editor, _| editor.take_focused_block());
2386 let mut fixed_block_max_width = Pixels::ZERO;
2387 let mut blocks = Vec::new();
2388 for (row, block) in fixed_blocks {
2389 let available_space = size(
2390 AvailableSpace::MinContent,
2391 AvailableSpace::Definite(block.height() as f32 * line_height),
2392 );
2393 let block_id = block.id();
2394
2395 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2396 focused_block = None;
2397 }
2398
2399 let (element, element_size) = self.render_block(
2400 block,
2401 available_space,
2402 block_id,
2403 row,
2404 snapshot,
2405 text_x,
2406 &rows,
2407 line_layouts,
2408 gutter_dimensions,
2409 line_height,
2410 em_width,
2411 text_hitbox,
2412 scroll_width,
2413 cx,
2414 );
2415 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2416 blocks.push(BlockLayout {
2417 id: block_id,
2418 row: Some(row),
2419 element,
2420 available_space,
2421 style: BlockStyle::Fixed,
2422 });
2423 }
2424 for (row, block) in non_fixed_blocks {
2425 let style = block.style();
2426 let width = match style {
2427 BlockStyle::Sticky => hitbox.size.width,
2428 BlockStyle::Flex => hitbox
2429 .size
2430 .width
2431 .max(fixed_block_max_width)
2432 .max(gutter_dimensions.width + *scroll_width),
2433 BlockStyle::Fixed => unreachable!(),
2434 };
2435 let available_space = size(
2436 AvailableSpace::Definite(width),
2437 AvailableSpace::Definite(block.height() as f32 * line_height),
2438 );
2439 let block_id = block.id();
2440
2441 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2442 focused_block = None;
2443 }
2444
2445 let (element, _) = self.render_block(
2446 block,
2447 available_space,
2448 block_id,
2449 row,
2450 snapshot,
2451 text_x,
2452 &rows,
2453 line_layouts,
2454 gutter_dimensions,
2455 line_height,
2456 em_width,
2457 text_hitbox,
2458 scroll_width,
2459 cx,
2460 );
2461 blocks.push(BlockLayout {
2462 id: block_id,
2463 row: Some(row),
2464 element,
2465 available_space,
2466 style,
2467 });
2468 }
2469
2470 if let Some(focused_block) = focused_block {
2471 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2472 if focus_handle.is_focused(cx) {
2473 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2474 let style = block.style();
2475 let width = match style {
2476 BlockStyle::Fixed => AvailableSpace::MinContent,
2477 BlockStyle::Flex => AvailableSpace::Definite(
2478 hitbox
2479 .size
2480 .width
2481 .max(fixed_block_max_width)
2482 .max(gutter_dimensions.width + *scroll_width),
2483 ),
2484 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2485 };
2486 let available_space = size(
2487 width,
2488 AvailableSpace::Definite(block.height() as f32 * line_height),
2489 );
2490
2491 let (element, _) = self.render_block(
2492 &block,
2493 available_space,
2494 focused_block.id,
2495 rows.end,
2496 snapshot,
2497 text_x,
2498 &rows,
2499 line_layouts,
2500 gutter_dimensions,
2501 line_height,
2502 em_width,
2503 text_hitbox,
2504 scroll_width,
2505 cx,
2506 );
2507
2508 blocks.push(BlockLayout {
2509 id: block.id(),
2510 row: None,
2511 element,
2512 available_space,
2513 style,
2514 });
2515 }
2516 }
2517 }
2518 }
2519
2520 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2521 blocks
2522 }
2523
2524 fn layout_blocks(
2525 &self,
2526 blocks: &mut Vec<BlockLayout>,
2527 hitbox: &Hitbox,
2528 line_height: Pixels,
2529 scroll_pixel_position: gpui::Point<Pixels>,
2530 cx: &mut WindowContext,
2531 ) {
2532 for block in blocks {
2533 let mut origin = if let Some(row) = block.row {
2534 hitbox.origin
2535 + point(
2536 Pixels::ZERO,
2537 row.as_f32() * line_height - scroll_pixel_position.y,
2538 )
2539 } else {
2540 // Position the block outside the visible area
2541 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2542 };
2543
2544 if !matches!(block.style, BlockStyle::Sticky) {
2545 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2546 }
2547
2548 let focus_handle = block
2549 .element
2550 .prepaint_as_root(origin, block.available_space, cx);
2551
2552 if let Some(focus_handle) = focus_handle {
2553 self.editor.update(cx, |editor, _cx| {
2554 editor.set_focused_block(FocusedBlock {
2555 id: block.id,
2556 focus_handle: focus_handle.downgrade(),
2557 });
2558 });
2559 }
2560 }
2561 }
2562
2563 #[allow(clippy::too_many_arguments)]
2564 fn layout_context_menu(
2565 &self,
2566 line_height: Pixels,
2567 hitbox: &Hitbox,
2568 text_hitbox: &Hitbox,
2569 content_origin: gpui::Point<Pixels>,
2570 start_row: DisplayRow,
2571 scroll_pixel_position: gpui::Point<Pixels>,
2572 line_layouts: &[LineWithInvisibles],
2573 newest_selection_head: DisplayPoint,
2574 gutter_overshoot: Pixels,
2575 cx: &mut WindowContext,
2576 ) -> bool {
2577 let max_height = cmp::min(
2578 12. * line_height,
2579 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
2580 );
2581 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
2582 if editor.context_menu_visible() {
2583 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
2584 } else {
2585 None
2586 }
2587 }) else {
2588 return false;
2589 };
2590
2591 let context_menu_size = context_menu.layout_as_root(AvailableSpace::min_size(), cx);
2592
2593 let (x, y) = match position {
2594 crate::ContextMenuOrigin::EditorPoint(point) => {
2595 let cursor_row_layout = &line_layouts[point.row().minus(start_row) as usize];
2596 let x = cursor_row_layout.x_for_index(point.column() as usize)
2597 - scroll_pixel_position.x;
2598 let y = point.row().next_row().as_f32() * line_height - scroll_pixel_position.y;
2599 (x, y)
2600 }
2601 crate::ContextMenuOrigin::GutterIndicator(row) => {
2602 // 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
2603 // text field.
2604 let x = -gutter_overshoot;
2605 let y = row.next_row().as_f32() * line_height - scroll_pixel_position.y;
2606 (x, y)
2607 }
2608 };
2609
2610 let mut list_origin = content_origin + point(x, y);
2611 let list_width = context_menu_size.width;
2612 let list_height = context_menu_size.height;
2613
2614 // Snap the right edge of the list to the right edge of the window if
2615 // its horizontal bounds overflow.
2616 if list_origin.x + list_width > cx.viewport_size().width {
2617 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
2618 }
2619
2620 if list_origin.y + list_height > text_hitbox.lower_right().y {
2621 list_origin.y -= line_height + list_height;
2622 }
2623
2624 cx.defer_draw(context_menu, list_origin, 1);
2625 true
2626 }
2627
2628 fn layout_mouse_context_menu(
2629 &self,
2630 editor_snapshot: &EditorSnapshot,
2631 visible_range: Range<DisplayRow>,
2632 cx: &mut WindowContext,
2633 ) -> Option<AnyElement> {
2634 let position = self.editor.update(cx, |editor, cx| {
2635 let visible_start_point = editor.display_to_pixel_point(
2636 DisplayPoint::new(visible_range.start, 0),
2637 editor_snapshot,
2638 cx,
2639 )?;
2640 let visible_end_point = editor.display_to_pixel_point(
2641 DisplayPoint::new(visible_range.end, 0),
2642 editor_snapshot,
2643 cx,
2644 )?;
2645
2646 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2647 let (source_display_point, position) = match mouse_context_menu.position {
2648 MenuPosition::PinnedToScreen(point) => (None, point),
2649 MenuPosition::PinnedToEditor {
2650 source,
2651 offset_x,
2652 offset_y,
2653 } => {
2654 let source_display_point = source.to_display_point(editor_snapshot);
2655 let mut source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
2656 source_point.x += offset_x;
2657 source_point.y += offset_y;
2658 (Some(source_display_point), source_point)
2659 }
2660 };
2661
2662 let source_included = source_display_point.map_or(true, |source_display_point| {
2663 visible_range
2664 .to_inclusive()
2665 .contains(&source_display_point.row())
2666 });
2667 let position_included =
2668 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
2669 if !source_included && !position_included {
2670 None
2671 } else {
2672 Some(position)
2673 }
2674 })?;
2675
2676 let mut element = self.editor.update(cx, |editor, _| {
2677 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2678 let context_menu = mouse_context_menu.context_menu.clone();
2679
2680 Some(
2681 deferred(
2682 anchored()
2683 .position(position)
2684 .child(context_menu)
2685 .anchor(AnchorCorner::TopLeft)
2686 .snap_to_window(),
2687 )
2688 .with_priority(1)
2689 .into_any(),
2690 )
2691 })?;
2692
2693 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
2694 Some(element)
2695 }
2696
2697 #[allow(clippy::too_many_arguments)]
2698 fn layout_hover_popovers(
2699 &self,
2700 snapshot: &EditorSnapshot,
2701 hitbox: &Hitbox,
2702 text_hitbox: &Hitbox,
2703 visible_display_row_range: Range<DisplayRow>,
2704 content_origin: gpui::Point<Pixels>,
2705 scroll_pixel_position: gpui::Point<Pixels>,
2706 line_layouts: &[LineWithInvisibles],
2707 line_height: Pixels,
2708 em_width: Pixels,
2709 cx: &mut WindowContext,
2710 ) {
2711 struct MeasuredHoverPopover {
2712 element: AnyElement,
2713 size: Size<Pixels>,
2714 horizontal_offset: Pixels,
2715 }
2716
2717 let max_size = size(
2718 (120. * em_width) // Default size
2719 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2720 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2721 (16. * line_height) // Default size
2722 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2723 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2724 );
2725
2726 let hover_popovers = self.editor.update(cx, |editor, cx| {
2727 editor
2728 .hover_state
2729 .render(&snapshot, visible_display_row_range.clone(), max_size, cx)
2730 });
2731 let Some((position, hover_popovers)) = hover_popovers else {
2732 return;
2733 };
2734
2735 // This is safe because we check on layout whether the required row is available
2736 let hovered_row_layout =
2737 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
2738
2739 // Compute Hovered Point
2740 let x =
2741 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
2742 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
2743 let hovered_point = content_origin + point(x, y);
2744
2745 let mut overall_height = Pixels::ZERO;
2746 let mut measured_hover_popovers = Vec::new();
2747 for mut hover_popover in hover_popovers {
2748 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
2749 let horizontal_offset =
2750 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
2751
2752 overall_height += HOVER_POPOVER_GAP + size.height;
2753
2754 measured_hover_popovers.push(MeasuredHoverPopover {
2755 element: hover_popover,
2756 size,
2757 horizontal_offset,
2758 });
2759 }
2760 overall_height += HOVER_POPOVER_GAP;
2761
2762 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
2763 let mut occlusion = div()
2764 .size_full()
2765 .occlude()
2766 .on_mouse_move(|_, cx| cx.stop_propagation())
2767 .into_any_element();
2768 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
2769 cx.defer_draw(occlusion, origin, 2);
2770 }
2771
2772 if hovered_point.y > overall_height {
2773 // There is enough space above. Render popovers above the hovered point
2774 let mut current_y = hovered_point.y;
2775 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2776 let size = popover.size;
2777 let popover_origin = point(
2778 hovered_point.x + popover.horizontal_offset,
2779 current_y - size.height,
2780 );
2781
2782 cx.defer_draw(popover.element, popover_origin, 2);
2783 if position != itertools::Position::Last {
2784 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
2785 draw_occluder(size.width, origin, cx);
2786 }
2787
2788 current_y = popover_origin.y - HOVER_POPOVER_GAP;
2789 }
2790 } else {
2791 // There is not enough space above. Render popovers below the hovered point
2792 let mut current_y = hovered_point.y + line_height;
2793 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2794 let size = popover.size;
2795 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
2796
2797 cx.defer_draw(popover.element, popover_origin, 2);
2798 if position != itertools::Position::Last {
2799 let origin = point(popover_origin.x, popover_origin.y + size.height);
2800 draw_occluder(size.width, origin, cx);
2801 }
2802
2803 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
2804 }
2805 }
2806 }
2807
2808 #[allow(clippy::too_many_arguments)]
2809 fn layout_signature_help(
2810 &self,
2811 hitbox: &Hitbox,
2812 content_origin: gpui::Point<Pixels>,
2813 scroll_pixel_position: gpui::Point<Pixels>,
2814 newest_selection_head: Option<DisplayPoint>,
2815 start_row: DisplayRow,
2816 line_layouts: &[LineWithInvisibles],
2817 line_height: Pixels,
2818 em_width: Pixels,
2819 cx: &mut WindowContext,
2820 ) {
2821 if !self.editor.focus_handle(cx).is_focused(cx) {
2822 return;
2823 }
2824 let Some(newest_selection_head) = newest_selection_head else {
2825 return;
2826 };
2827 let selection_row = newest_selection_head.row();
2828 if selection_row < start_row {
2829 return;
2830 }
2831 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
2832 else {
2833 return;
2834 };
2835
2836 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
2837 - scroll_pixel_position.x
2838 + content_origin.x;
2839 let start_y =
2840 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
2841
2842 let max_size = size(
2843 (120. * em_width) // Default size
2844 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2845 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2846 (16. * line_height) // Default size
2847 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2848 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2849 );
2850
2851 let maybe_element = self.editor.update(cx, |editor, cx| {
2852 if let Some(popover) = editor.signature_help_state.popover_mut() {
2853 let element = popover.render(
2854 &self.style,
2855 max_size,
2856 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2857 cx,
2858 );
2859 Some(element)
2860 } else {
2861 None
2862 }
2863 });
2864 if let Some(mut element) = maybe_element {
2865 let window_size = cx.viewport_size();
2866 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
2867 let mut point = point(start_x, start_y - size.height);
2868
2869 // Adjusting to ensure the popover does not overflow in the X-axis direction.
2870 if point.x + size.width >= window_size.width {
2871 point.x = window_size.width - size.width;
2872 }
2873
2874 cx.defer_draw(element, point, 1)
2875 }
2876 }
2877
2878 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
2879 cx.paint_layer(layout.hitbox.bounds, |cx| {
2880 let scroll_top = layout.position_map.snapshot.scroll_position().y;
2881 let gutter_bg = cx.theme().colors().editor_gutter_background;
2882 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
2883 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
2884
2885 if let EditorMode::Full = layout.mode {
2886 let mut active_rows = layout.active_rows.iter().peekable();
2887 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
2888 let mut end_row = start_row.0;
2889 while active_rows
2890 .peek()
2891 .map_or(false, |(active_row, has_selection)| {
2892 active_row.0 == end_row + 1
2893 && *has_selection == contains_non_empty_selection
2894 })
2895 {
2896 active_rows.next().unwrap();
2897 end_row += 1;
2898 }
2899
2900 if !contains_non_empty_selection {
2901 let highlight_h_range =
2902 match layout.position_map.snapshot.current_line_highlight {
2903 CurrentLineHighlight::Gutter => Some(Range {
2904 start: layout.hitbox.left(),
2905 end: layout.gutter_hitbox.right(),
2906 }),
2907 CurrentLineHighlight::Line => Some(Range {
2908 start: layout.text_hitbox.bounds.left(),
2909 end: layout.text_hitbox.bounds.right(),
2910 }),
2911 CurrentLineHighlight::All => Some(Range {
2912 start: layout.hitbox.left(),
2913 end: layout.hitbox.right(),
2914 }),
2915 CurrentLineHighlight::None => None,
2916 };
2917 if let Some(range) = highlight_h_range {
2918 let active_line_bg = cx.theme().colors().editor_active_line_background;
2919 let bounds = Bounds {
2920 origin: point(
2921 range.start,
2922 layout.hitbox.origin.y
2923 + (start_row.as_f32() - scroll_top)
2924 * layout.position_map.line_height,
2925 ),
2926 size: size(
2927 range.end - range.start,
2928 layout.position_map.line_height
2929 * (end_row - start_row.0 + 1) as f32,
2930 ),
2931 };
2932 cx.paint_quad(fill(bounds, active_line_bg));
2933 }
2934 }
2935 }
2936
2937 let mut paint_highlight =
2938 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
2939 let origin = point(
2940 layout.hitbox.origin.x,
2941 layout.hitbox.origin.y
2942 + (highlight_row_start.as_f32() - scroll_top)
2943 * layout.position_map.line_height,
2944 );
2945 let size = size(
2946 layout.hitbox.size.width,
2947 layout.position_map.line_height
2948 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
2949 );
2950 cx.paint_quad(fill(Bounds { origin, size }, color));
2951 };
2952
2953 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
2954 for (&new_row, &new_color) in &layout.highlighted_rows {
2955 match &mut current_paint {
2956 Some((current_color, current_range)) => {
2957 let current_color = *current_color;
2958 let new_range_started = current_color != new_color
2959 || current_range.end.next_row() != new_row;
2960 if new_range_started {
2961 paint_highlight(
2962 current_range.start,
2963 current_range.end,
2964 current_color,
2965 );
2966 current_paint = Some((new_color, new_row..new_row));
2967 continue;
2968 } else {
2969 current_range.end = current_range.end.next_row();
2970 }
2971 }
2972 None => current_paint = Some((new_color, new_row..new_row)),
2973 };
2974 }
2975 if let Some((color, range)) = current_paint {
2976 paint_highlight(range.start, range.end, color);
2977 }
2978
2979 let scroll_left =
2980 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
2981
2982 for (wrap_position, active) in layout.wrap_guides.iter() {
2983 let x = (layout.text_hitbox.origin.x
2984 + *wrap_position
2985 + layout.position_map.em_width / 2.)
2986 - scroll_left;
2987
2988 let show_scrollbars = layout
2989 .scrollbar_layout
2990 .as_ref()
2991 .map_or(false, |scrollbar| scrollbar.visible);
2992 if x < layout.text_hitbox.origin.x
2993 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
2994 {
2995 continue;
2996 }
2997
2998 let color = if *active {
2999 cx.theme().colors().editor_active_wrap_guide
3000 } else {
3001 cx.theme().colors().editor_wrap_guide
3002 };
3003 cx.paint_quad(fill(
3004 Bounds {
3005 origin: point(x, layout.text_hitbox.origin.y),
3006 size: size(px(1.), layout.text_hitbox.size.height),
3007 },
3008 color,
3009 ));
3010 }
3011 }
3012 })
3013 }
3014
3015 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3016 let Some(indent_guides) = &layout.indent_guides else {
3017 return;
3018 };
3019
3020 let faded_color = |color: Hsla, alpha: f32| {
3021 let mut faded = color;
3022 faded.a = alpha;
3023 faded
3024 };
3025
3026 for indent_guide in indent_guides {
3027 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3028 let settings = indent_guide.settings;
3029
3030 // TODO fixed for now, expose them through themes later
3031 const INDENT_AWARE_ALPHA: f32 = 0.2;
3032 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3033 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3034 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3035
3036 let line_color = match (settings.coloring, indent_guide.active) {
3037 (IndentGuideColoring::Disabled, _) => None,
3038 (IndentGuideColoring::Fixed, false) => {
3039 Some(cx.theme().colors().editor_indent_guide)
3040 }
3041 (IndentGuideColoring::Fixed, true) => {
3042 Some(cx.theme().colors().editor_indent_guide_active)
3043 }
3044 (IndentGuideColoring::IndentAware, false) => {
3045 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3046 }
3047 (IndentGuideColoring::IndentAware, true) => {
3048 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3049 }
3050 };
3051
3052 let background_color = match (settings.background_coloring, indent_guide.active) {
3053 (IndentGuideBackgroundColoring::Disabled, _) => None,
3054 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3055 indent_accent_colors,
3056 INDENT_AWARE_BACKGROUND_ALPHA,
3057 )),
3058 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3059 indent_accent_colors,
3060 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3061 )),
3062 };
3063
3064 let requested_line_width = if indent_guide.active {
3065 settings.active_line_width
3066 } else {
3067 settings.line_width
3068 }
3069 .clamp(1, 10);
3070 let mut line_indicator_width = 0.;
3071 if let Some(color) = line_color {
3072 cx.paint_quad(fill(
3073 Bounds {
3074 origin: indent_guide.origin,
3075 size: size(px(requested_line_width as f32), indent_guide.length),
3076 },
3077 color,
3078 ));
3079 line_indicator_width = requested_line_width as f32;
3080 }
3081
3082 if let Some(color) = background_color {
3083 let width = indent_guide.single_indent_width - px(line_indicator_width);
3084 cx.paint_quad(fill(
3085 Bounds {
3086 origin: point(
3087 indent_guide.origin.x + px(line_indicator_width),
3088 indent_guide.origin.y,
3089 ),
3090 size: size(width, indent_guide.length),
3091 },
3092 color,
3093 ));
3094 }
3095 }
3096 }
3097
3098 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3099 let line_height = layout.position_map.line_height;
3100 let scroll_position = layout.position_map.snapshot.scroll_position();
3101 let scroll_top = scroll_position.y * line_height;
3102
3103 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3104
3105 for (ix, line) in layout.line_numbers.iter().enumerate() {
3106 if let Some(line) = line {
3107 let line_origin = layout.gutter_hitbox.origin
3108 + point(
3109 layout.gutter_hitbox.size.width
3110 - line.width
3111 - layout.gutter_dimensions.right_padding,
3112 ix as f32 * line_height - (scroll_top % line_height),
3113 );
3114
3115 line.paint(line_origin, line_height, cx).log_err();
3116 }
3117 }
3118 }
3119
3120 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
3121 if layout.display_hunks.is_empty() {
3122 return;
3123 }
3124
3125 let line_height = layout.position_map.line_height;
3126 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3127 for (hunk, hitbox) in &layout.display_hunks {
3128 let hunk_to_paint = match hunk {
3129 DisplayDiffHunk::Folded { .. } => {
3130 let hunk_bounds = Self::diff_hunk_bounds(
3131 &layout.position_map.snapshot,
3132 line_height,
3133 layout.gutter_hitbox.bounds,
3134 &hunk,
3135 );
3136 Some((
3137 hunk_bounds,
3138 cx.theme().status().modified,
3139 Corners::all(1. * line_height),
3140 ))
3141 }
3142 DisplayDiffHunk::Unfolded { status, .. } => {
3143 hitbox.as_ref().map(|hunk_hitbox| match status {
3144 DiffHunkStatus::Added => (
3145 hunk_hitbox.bounds,
3146 cx.theme().status().created,
3147 Corners::all(0.05 * line_height),
3148 ),
3149 DiffHunkStatus::Modified => (
3150 hunk_hitbox.bounds,
3151 cx.theme().status().modified,
3152 Corners::all(0.05 * line_height),
3153 ),
3154 DiffHunkStatus::Removed => (
3155 Bounds::new(
3156 point(
3157 hunk_hitbox.origin.x - hunk_hitbox.size.width,
3158 hunk_hitbox.origin.y,
3159 ),
3160 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
3161 ),
3162 cx.theme().status().deleted,
3163 Corners::all(1. * line_height),
3164 ),
3165 })
3166 }
3167 };
3168
3169 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
3170 cx.paint_quad(quad(
3171 hunk_bounds,
3172 corner_radii,
3173 background_color,
3174 Edges::default(),
3175 transparent_black(),
3176 ));
3177 }
3178 }
3179 });
3180 }
3181
3182 pub(super) fn diff_hunk_bounds(
3183 snapshot: &EditorSnapshot,
3184 line_height: Pixels,
3185 gutter_bounds: Bounds<Pixels>,
3186 hunk: &DisplayDiffHunk,
3187 ) -> Bounds<Pixels> {
3188 let scroll_position = snapshot.scroll_position();
3189 let scroll_top = scroll_position.y * line_height;
3190
3191 match hunk {
3192 DisplayDiffHunk::Folded { display_row, .. } => {
3193 let start_y = display_row.as_f32() * line_height - scroll_top;
3194 let end_y = start_y + line_height;
3195
3196 let width = 0.275 * line_height;
3197 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3198 let highlight_size = size(width, end_y - start_y);
3199 Bounds::new(highlight_origin, highlight_size)
3200 }
3201 DisplayDiffHunk::Unfolded {
3202 display_row_range,
3203 status,
3204 ..
3205 } => match status {
3206 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
3207 let start_row = display_row_range.start;
3208 let end_row = display_row_range.end;
3209 // If we're in a multibuffer, row range span might include an
3210 // excerpt header, so if we were to draw the marker straight away,
3211 // the hunk might include the rows of that header.
3212 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
3213 // Instead, we simply check whether the range we're dealing with includes
3214 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
3215 let end_row_in_current_excerpt = snapshot
3216 .blocks_in_range(start_row..end_row)
3217 .find_map(|(start_row, block)| {
3218 if matches!(block, Block::ExcerptHeader { .. }) {
3219 Some(start_row)
3220 } else {
3221 None
3222 }
3223 })
3224 .unwrap_or(end_row);
3225
3226 let start_y = start_row.as_f32() * line_height - scroll_top;
3227 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
3228
3229 let width = 0.275 * line_height;
3230 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3231 let highlight_size = size(width, end_y - start_y);
3232 Bounds::new(highlight_origin, highlight_size)
3233 }
3234 DiffHunkStatus::Removed => {
3235 let row = display_row_range.start;
3236
3237 let offset = line_height / 2.;
3238 let start_y = row.as_f32() * line_height - offset - scroll_top;
3239 let end_y = start_y + line_height;
3240
3241 let width = 0.35 * line_height;
3242 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3243 let highlight_size = size(width, end_y - start_y);
3244 Bounds::new(highlight_origin, highlight_size)
3245 }
3246 },
3247 }
3248 }
3249
3250 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3251 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3252 cx.with_element_namespace("gutter_fold_toggles", |cx| {
3253 for fold_indicator in layout.gutter_fold_toggles.iter_mut().flatten() {
3254 fold_indicator.paint(cx);
3255 }
3256 });
3257
3258 for test_indicator in layout.test_indicators.iter_mut() {
3259 test_indicator.paint(cx);
3260 }
3261 for close_indicator in layout.close_indicators.iter_mut() {
3262 close_indicator.paint(cx);
3263 }
3264
3265 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
3266 indicator.paint(cx);
3267 }
3268 });
3269 }
3270
3271 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3272 for (_, hunk_hitbox) in &layout.display_hunks {
3273 if let Some(hunk_hitbox) = hunk_hitbox {
3274 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
3275 }
3276 }
3277
3278 let show_git_gutter = layout
3279 .position_map
3280 .snapshot
3281 .show_git_diff_gutter
3282 .unwrap_or_else(|| {
3283 matches!(
3284 ProjectSettings::get_global(cx).git.git_gutter,
3285 Some(GitGutterSetting::TrackedFiles)
3286 )
3287 });
3288 if show_git_gutter {
3289 Self::paint_diff_hunks(layout, cx)
3290 }
3291
3292 let highlight_width = 0.275 * layout.position_map.line_height;
3293 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
3294 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3295 for (range, color) in &layout.highlighted_gutter_ranges {
3296 let start_row = if range.start.row() < layout.visible_display_row_range.start {
3297 layout.visible_display_row_range.start - DisplayRow(1)
3298 } else {
3299 range.start.row()
3300 };
3301 let end_row = if range.end.row() > layout.visible_display_row_range.end {
3302 layout.visible_display_row_range.end + DisplayRow(1)
3303 } else {
3304 range.end.row()
3305 };
3306
3307 let start_y = layout.gutter_hitbox.top()
3308 + start_row.0 as f32 * layout.position_map.line_height
3309 - layout.position_map.scroll_pixel_position.y;
3310 let end_y = layout.gutter_hitbox.top()
3311 + (end_row.0 + 1) as f32 * layout.position_map.line_height
3312 - layout.position_map.scroll_pixel_position.y;
3313 let bounds = Bounds::from_corners(
3314 point(layout.gutter_hitbox.left(), start_y),
3315 point(layout.gutter_hitbox.left() + highlight_width, end_y),
3316 );
3317 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
3318 }
3319 });
3320 }
3321
3322 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3323 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
3324 return;
3325 };
3326
3327 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3328 for mut blame_element in blamed_display_rows.into_iter() {
3329 blame_element.paint(cx);
3330 }
3331 })
3332 }
3333
3334 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3335 cx.with_content_mask(
3336 Some(ContentMask {
3337 bounds: layout.text_hitbox.bounds,
3338 }),
3339 |cx| {
3340 let cursor_style = if self
3341 .editor
3342 .read(cx)
3343 .hovered_link_state
3344 .as_ref()
3345 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
3346 {
3347 CursorStyle::PointingHand
3348 } else {
3349 CursorStyle::IBeam
3350 };
3351 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
3352
3353 let invisible_display_ranges = self.paint_highlights(layout, cx);
3354 self.paint_lines(&invisible_display_ranges, layout, cx);
3355 self.paint_redactions(layout, cx);
3356 self.paint_cursors(layout, cx);
3357 self.paint_inline_blame(layout, cx);
3358 cx.with_element_namespace("crease_trailers", |cx| {
3359 for trailer in layout.crease_trailers.iter_mut().flatten() {
3360 trailer.element.paint(cx);
3361 }
3362 });
3363 },
3364 )
3365 }
3366
3367 fn paint_highlights(
3368 &mut self,
3369 layout: &mut EditorLayout,
3370 cx: &mut WindowContext,
3371 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
3372 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3373 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
3374 let line_end_overshoot = 0.15 * layout.position_map.line_height;
3375 for (range, color) in &layout.highlighted_ranges {
3376 self.paint_highlighted_range(
3377 range.clone(),
3378 *color,
3379 Pixels::ZERO,
3380 line_end_overshoot,
3381 layout,
3382 cx,
3383 );
3384 }
3385
3386 let corner_radius = 0.15 * layout.position_map.line_height;
3387
3388 for (player_color, selections) in &layout.selections {
3389 for selection in selections.into_iter() {
3390 self.paint_highlighted_range(
3391 selection.range.clone(),
3392 player_color.selection,
3393 corner_radius,
3394 corner_radius * 2.,
3395 layout,
3396 cx,
3397 );
3398
3399 if selection.is_local && !selection.range.is_empty() {
3400 invisible_display_ranges.push(selection.range.clone());
3401 }
3402 }
3403 }
3404 invisible_display_ranges
3405 })
3406 }
3407
3408 fn paint_lines(
3409 &mut self,
3410 invisible_display_ranges: &[Range<DisplayPoint>],
3411 layout: &mut EditorLayout,
3412 cx: &mut WindowContext,
3413 ) {
3414 let whitespace_setting = self
3415 .editor
3416 .read(cx)
3417 .buffer
3418 .read(cx)
3419 .settings_at(0, cx)
3420 .show_whitespaces;
3421
3422 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
3423 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
3424 line_with_invisibles.draw(
3425 layout,
3426 row,
3427 layout.content_origin,
3428 whitespace_setting,
3429 invisible_display_ranges,
3430 cx,
3431 )
3432 }
3433
3434 for line_element in &mut layout.line_elements {
3435 line_element.paint(cx);
3436 }
3437 }
3438
3439 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3440 if layout.redacted_ranges.is_empty() {
3441 return;
3442 }
3443
3444 let line_end_overshoot = layout.line_end_overshoot();
3445
3446 // A softer than perfect black
3447 let redaction_color = gpui::rgb(0x0e1111);
3448
3449 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3450 for range in layout.redacted_ranges.iter() {
3451 self.paint_highlighted_range(
3452 range.clone(),
3453 redaction_color.into(),
3454 Pixels::ZERO,
3455 line_end_overshoot,
3456 layout,
3457 cx,
3458 );
3459 }
3460 });
3461 }
3462
3463 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3464 for cursor in &mut layout.visible_cursors {
3465 cursor.paint(layout.content_origin, cx);
3466 }
3467 }
3468
3469 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3470 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
3471 return;
3472 };
3473
3474 let thumb_bounds = scrollbar_layout.thumb_bounds();
3475 if scrollbar_layout.visible {
3476 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
3477 cx.paint_quad(quad(
3478 scrollbar_layout.hitbox.bounds,
3479 Corners::default(),
3480 cx.theme().colors().scrollbar_track_background,
3481 Edges {
3482 top: Pixels::ZERO,
3483 right: Pixels::ZERO,
3484 bottom: Pixels::ZERO,
3485 left: ScrollbarLayout::BORDER_WIDTH,
3486 },
3487 cx.theme().colors().scrollbar_track_border,
3488 ));
3489
3490 let fast_markers =
3491 self.collect_fast_scrollbar_markers(layout, scrollbar_layout, cx);
3492 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
3493 self.refresh_slow_scrollbar_markers(layout, scrollbar_layout, cx);
3494
3495 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
3496 for marker in markers.iter().chain(&fast_markers) {
3497 let mut marker = marker.clone();
3498 marker.bounds.origin += scrollbar_layout.hitbox.origin;
3499 cx.paint_quad(marker);
3500 }
3501
3502 cx.paint_quad(quad(
3503 thumb_bounds,
3504 Corners::default(),
3505 cx.theme().colors().scrollbar_thumb_background,
3506 Edges {
3507 top: Pixels::ZERO,
3508 right: Pixels::ZERO,
3509 bottom: Pixels::ZERO,
3510 left: ScrollbarLayout::BORDER_WIDTH,
3511 },
3512 cx.theme().colors().scrollbar_thumb_border,
3513 ));
3514 });
3515 }
3516
3517 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
3518
3519 let row_height = scrollbar_layout.row_height;
3520 let row_range = scrollbar_layout.visible_row_range.clone();
3521
3522 cx.on_mouse_event({
3523 let editor = self.editor.clone();
3524 let hitbox = scrollbar_layout.hitbox.clone();
3525 let mut mouse_position = cx.mouse_position();
3526 move |event: &MouseMoveEvent, phase, cx| {
3527 if phase == DispatchPhase::Capture {
3528 return;
3529 }
3530
3531 editor.update(cx, |editor, cx| {
3532 if event.pressed_button == Some(MouseButton::Left)
3533 && editor.scroll_manager.is_dragging_scrollbar()
3534 {
3535 let y = mouse_position.y;
3536 let new_y = event.position.y;
3537 if (hitbox.top()..hitbox.bottom()).contains(&y) {
3538 let mut position = editor.scroll_position(cx);
3539 position.y += (new_y - y) / row_height;
3540 if position.y < 0.0 {
3541 position.y = 0.0;
3542 }
3543 editor.set_scroll_position(position, cx);
3544 }
3545
3546 cx.stop_propagation();
3547 } else {
3548 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3549 if hitbox.is_hovered(cx) {
3550 editor.scroll_manager.show_scrollbar(cx);
3551 }
3552 }
3553 mouse_position = event.position;
3554 })
3555 }
3556 });
3557
3558 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
3559 cx.on_mouse_event({
3560 let editor = self.editor.clone();
3561 move |_: &MouseUpEvent, phase, cx| {
3562 if phase == DispatchPhase::Capture {
3563 return;
3564 }
3565
3566 editor.update(cx, |editor, cx| {
3567 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3568 cx.stop_propagation();
3569 });
3570 }
3571 });
3572 } else {
3573 cx.on_mouse_event({
3574 let editor = self.editor.clone();
3575 let hitbox = scrollbar_layout.hitbox.clone();
3576 move |event: &MouseDownEvent, phase, cx| {
3577 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
3578 return;
3579 }
3580
3581 editor.update(cx, |editor, cx| {
3582 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
3583
3584 let y = event.position.y;
3585 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
3586 let center_row = ((y - hitbox.top()) / row_height).round() as u32;
3587 let top_row = center_row
3588 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
3589 let mut position = editor.scroll_position(cx);
3590 position.y = top_row as f32;
3591 editor.set_scroll_position(position, cx);
3592 } else {
3593 editor.scroll_manager.show_scrollbar(cx);
3594 }
3595
3596 cx.stop_propagation();
3597 });
3598 }
3599 });
3600 }
3601 }
3602
3603 fn collect_fast_scrollbar_markers(
3604 &self,
3605 layout: &EditorLayout,
3606 scrollbar_layout: &ScrollbarLayout,
3607 cx: &mut WindowContext,
3608 ) -> Vec<PaintQuad> {
3609 const LIMIT: usize = 100;
3610 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
3611 return vec![];
3612 }
3613 let cursor_ranges = layout
3614 .cursors
3615 .iter()
3616 .map(|(point, color)| ColoredRange {
3617 start: point.row(),
3618 end: point.row(),
3619 color: *color,
3620 })
3621 .collect_vec();
3622 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
3623 }
3624
3625 fn refresh_slow_scrollbar_markers(
3626 &self,
3627 layout: &EditorLayout,
3628 scrollbar_layout: &ScrollbarLayout,
3629 cx: &mut WindowContext,
3630 ) {
3631 self.editor.update(cx, |editor, cx| {
3632 if !editor.is_singleton(cx)
3633 || !editor
3634 .scrollbar_marker_state
3635 .should_refresh(scrollbar_layout.hitbox.size)
3636 {
3637 return;
3638 }
3639
3640 let scrollbar_layout = scrollbar_layout.clone();
3641 let background_highlights = editor.background_highlights.clone();
3642 let snapshot = layout.position_map.snapshot.clone();
3643 let theme = cx.theme().clone();
3644 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
3645
3646 editor.scrollbar_marker_state.dirty = false;
3647 editor.scrollbar_marker_state.pending_refresh =
3648 Some(cx.spawn(|editor, mut cx| async move {
3649 let scrollbar_size = scrollbar_layout.hitbox.size;
3650 let scrollbar_markers = cx
3651 .background_executor()
3652 .spawn(async move {
3653 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
3654 let mut marker_quads = Vec::new();
3655 if scrollbar_settings.git_diff {
3656 let marker_row_ranges = snapshot
3657 .buffer_snapshot
3658 .git_diff_hunks_in_range(
3659 MultiBufferRow::MIN..MultiBufferRow::MAX,
3660 )
3661 .map(|hunk| {
3662 let start_display_row =
3663 MultiBufferPoint::new(hunk.associated_range.start.0, 0)
3664 .to_display_point(&snapshot.display_snapshot)
3665 .row();
3666 let mut end_display_row =
3667 MultiBufferPoint::new(hunk.associated_range.end.0, 0)
3668 .to_display_point(&snapshot.display_snapshot)
3669 .row();
3670 if end_display_row != start_display_row {
3671 end_display_row.0 -= 1;
3672 }
3673 let color = match hunk_status(&hunk) {
3674 DiffHunkStatus::Added => theme.status().created,
3675 DiffHunkStatus::Modified => theme.status().modified,
3676 DiffHunkStatus::Removed => theme.status().deleted,
3677 };
3678 ColoredRange {
3679 start: start_display_row,
3680 end: end_display_row,
3681 color,
3682 }
3683 });
3684
3685 marker_quads.extend(
3686 scrollbar_layout
3687 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
3688 );
3689 }
3690
3691 for (background_highlight_id, (_, background_ranges)) in
3692 background_highlights.iter()
3693 {
3694 let is_search_highlights = *background_highlight_id
3695 == TypeId::of::<BufferSearchHighlights>();
3696 let is_symbol_occurrences = *background_highlight_id
3697 == TypeId::of::<DocumentHighlightRead>()
3698 || *background_highlight_id
3699 == TypeId::of::<DocumentHighlightWrite>();
3700 if (is_search_highlights && scrollbar_settings.search_results)
3701 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
3702 {
3703 let mut color = theme.status().info;
3704 if is_symbol_occurrences {
3705 color.fade_out(0.5);
3706 }
3707 let marker_row_ranges =
3708 background_ranges.into_iter().map(|range| {
3709 let display_start = range
3710 .start
3711 .to_display_point(&snapshot.display_snapshot);
3712 let display_end = range
3713 .end
3714 .to_display_point(&snapshot.display_snapshot);
3715 ColoredRange {
3716 start: display_start.row(),
3717 end: display_end.row(),
3718 color,
3719 }
3720 });
3721 marker_quads.extend(
3722 scrollbar_layout
3723 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
3724 );
3725 }
3726 }
3727
3728 if scrollbar_settings.diagnostics {
3729 let diagnostics = snapshot
3730 .buffer_snapshot
3731 .diagnostics_in_range::<_, Point>(
3732 Point::zero()..max_point,
3733 false,
3734 )
3735 // We want to sort by severity, in order to paint the most severe diagnostics last.
3736 .sorted_by_key(|diagnostic| {
3737 std::cmp::Reverse(diagnostic.diagnostic.severity)
3738 });
3739
3740 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
3741 let start_display = diagnostic
3742 .range
3743 .start
3744 .to_display_point(&snapshot.display_snapshot);
3745 let end_display = diagnostic
3746 .range
3747 .end
3748 .to_display_point(&snapshot.display_snapshot);
3749 let color = match diagnostic.diagnostic.severity {
3750 DiagnosticSeverity::ERROR => theme.status().error,
3751 DiagnosticSeverity::WARNING => theme.status().warning,
3752 DiagnosticSeverity::INFORMATION => theme.status().info,
3753 _ => theme.status().hint,
3754 };
3755 ColoredRange {
3756 start: start_display.row(),
3757 end: end_display.row(),
3758 color,
3759 }
3760 });
3761 marker_quads.extend(
3762 scrollbar_layout
3763 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
3764 );
3765 }
3766
3767 Arc::from(marker_quads)
3768 })
3769 .await;
3770
3771 editor.update(&mut cx, |editor, cx| {
3772 editor.scrollbar_marker_state.markers = scrollbar_markers;
3773 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
3774 editor.scrollbar_marker_state.pending_refresh = None;
3775 cx.notify();
3776 })?;
3777
3778 Ok(())
3779 }));
3780 });
3781 }
3782
3783 #[allow(clippy::too_many_arguments)]
3784 fn paint_highlighted_range(
3785 &self,
3786 range: Range<DisplayPoint>,
3787 color: Hsla,
3788 corner_radius: Pixels,
3789 line_end_overshoot: Pixels,
3790 layout: &EditorLayout,
3791 cx: &mut WindowContext,
3792 ) {
3793 let start_row = layout.visible_display_row_range.start;
3794 let end_row = layout.visible_display_row_range.end;
3795 if range.start != range.end {
3796 let row_range = if range.end.column() == 0 {
3797 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3798 } else {
3799 cmp::max(range.start.row(), start_row)
3800 ..cmp::min(range.end.row().next_row(), end_row)
3801 };
3802
3803 let highlighted_range = HighlightedRange {
3804 color,
3805 line_height: layout.position_map.line_height,
3806 corner_radius,
3807 start_y: layout.content_origin.y
3808 + row_range.start.as_f32() * layout.position_map.line_height
3809 - layout.position_map.scroll_pixel_position.y,
3810 lines: row_range
3811 .iter_rows()
3812 .map(|row| {
3813 let line_layout =
3814 &layout.position_map.line_layouts[row.minus(start_row) as usize];
3815 HighlightedRangeLine {
3816 start_x: if row == range.start.row() {
3817 layout.content_origin.x
3818 + line_layout.x_for_index(range.start.column() as usize)
3819 - layout.position_map.scroll_pixel_position.x
3820 } else {
3821 layout.content_origin.x
3822 - layout.position_map.scroll_pixel_position.x
3823 },
3824 end_x: if row == range.end.row() {
3825 layout.content_origin.x
3826 + line_layout.x_for_index(range.end.column() as usize)
3827 - layout.position_map.scroll_pixel_position.x
3828 } else {
3829 layout.content_origin.x + line_layout.width + line_end_overshoot
3830 - layout.position_map.scroll_pixel_position.x
3831 },
3832 }
3833 })
3834 .collect(),
3835 };
3836
3837 highlighted_range.paint(layout.text_hitbox.bounds, cx);
3838 }
3839 }
3840
3841 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3842 if let Some(mut inline_blame) = layout.inline_blame.take() {
3843 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3844 inline_blame.paint(cx);
3845 })
3846 }
3847 }
3848
3849 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3850 for mut block in layout.blocks.drain(..) {
3851 block.element.paint(cx);
3852 }
3853 }
3854
3855 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3856 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
3857 mouse_context_menu.paint(cx);
3858 }
3859 }
3860
3861 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3862 cx.on_mouse_event({
3863 let position_map = layout.position_map.clone();
3864 let editor = self.editor.clone();
3865 let hitbox = layout.hitbox.clone();
3866 let mut delta = ScrollDelta::default();
3867
3868 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
3869 // accidentally turn off their scrolling.
3870 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
3871
3872 move |event: &ScrollWheelEvent, phase, cx| {
3873 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
3874 delta = delta.coalesce(event.delta);
3875 editor.update(cx, |editor, cx| {
3876 let position_map: &PositionMap = &position_map;
3877
3878 let line_height = position_map.line_height;
3879 let max_glyph_width = position_map.em_width;
3880 let (delta, axis) = match delta {
3881 gpui::ScrollDelta::Pixels(mut pixels) => {
3882 //Trackpad
3883 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
3884 (pixels, axis)
3885 }
3886
3887 gpui::ScrollDelta::Lines(lines) => {
3888 //Not trackpad
3889 let pixels =
3890 point(lines.x * max_glyph_width, lines.y * line_height);
3891 (pixels, None)
3892 }
3893 };
3894
3895 let current_scroll_position = position_map.snapshot.scroll_position();
3896 let x = (current_scroll_position.x * max_glyph_width
3897 - (delta.x * scroll_sensitivity))
3898 / max_glyph_width;
3899 let y = (current_scroll_position.y * line_height
3900 - (delta.y * scroll_sensitivity))
3901 / line_height;
3902 let mut scroll_position =
3903 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
3904 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
3905 if forbid_vertical_scroll {
3906 scroll_position.y = current_scroll_position.y;
3907 }
3908
3909 if scroll_position != current_scroll_position {
3910 editor.scroll(scroll_position, axis, cx);
3911 cx.stop_propagation();
3912 } else if y < 0. {
3913 // Due to clamping, we may fail to detect cases of overscroll to the top;
3914 // We want the scroll manager to get an update in such cases and detect the change of direction
3915 // on the next frame.
3916 cx.notify();
3917 }
3918 });
3919 }
3920 }
3921 });
3922 }
3923
3924 fn paint_mouse_listeners(
3925 &mut self,
3926 layout: &EditorLayout,
3927 hovered_hunk: Option<HoveredHunk>,
3928 cx: &mut WindowContext,
3929 ) {
3930 self.paint_scroll_wheel_listener(layout, cx);
3931
3932 cx.on_mouse_event({
3933 let position_map = layout.position_map.clone();
3934 let editor = self.editor.clone();
3935 let text_hitbox = layout.text_hitbox.clone();
3936 let gutter_hitbox = layout.gutter_hitbox.clone();
3937
3938 move |event: &MouseDownEvent, phase, cx| {
3939 if phase == DispatchPhase::Bubble {
3940 match event.button {
3941 MouseButton::Left => editor.update(cx, |editor, cx| {
3942 Self::mouse_left_down(
3943 editor,
3944 event,
3945 hovered_hunk.clone(),
3946 &position_map,
3947 &text_hitbox,
3948 &gutter_hitbox,
3949 cx,
3950 );
3951 }),
3952 MouseButton::Right => editor.update(cx, |editor, cx| {
3953 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
3954 }),
3955 MouseButton::Middle => editor.update(cx, |editor, cx| {
3956 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
3957 }),
3958 _ => {}
3959 };
3960 }
3961 }
3962 });
3963
3964 cx.on_mouse_event({
3965 let editor = self.editor.clone();
3966 let position_map = layout.position_map.clone();
3967 let text_hitbox = layout.text_hitbox.clone();
3968
3969 move |event: &MouseUpEvent, phase, cx| {
3970 if phase == DispatchPhase::Bubble {
3971 editor.update(cx, |editor, cx| {
3972 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
3973 });
3974 }
3975 }
3976 });
3977 cx.on_mouse_event({
3978 let position_map = layout.position_map.clone();
3979 let editor = self.editor.clone();
3980 let text_hitbox = layout.text_hitbox.clone();
3981 let gutter_hitbox = layout.gutter_hitbox.clone();
3982
3983 move |event: &MouseMoveEvent, phase, cx| {
3984 if phase == DispatchPhase::Bubble {
3985 editor.update(cx, |editor, cx| {
3986 if editor.hover_state.focused(cx) {
3987 return;
3988 }
3989 if event.pressed_button == Some(MouseButton::Left)
3990 || event.pressed_button == Some(MouseButton::Middle)
3991 {
3992 Self::mouse_dragged(
3993 editor,
3994 event,
3995 &position_map,
3996 text_hitbox.bounds,
3997 cx,
3998 )
3999 }
4000
4001 Self::mouse_moved(
4002 editor,
4003 event,
4004 &position_map,
4005 &text_hitbox,
4006 &gutter_hitbox,
4007 cx,
4008 )
4009 });
4010 }
4011 }
4012 });
4013 }
4014
4015 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
4016 bounds.upper_right().x - self.style.scrollbar_width
4017 }
4018
4019 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
4020 let style = &self.style;
4021 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4022 let layout = cx
4023 .text_system()
4024 .shape_line(
4025 SharedString::from(" ".repeat(column)),
4026 font_size,
4027 &[TextRun {
4028 len: column,
4029 font: style.text.font(),
4030 color: Hsla::default(),
4031 background_color: None,
4032 underline: None,
4033 strikethrough: None,
4034 }],
4035 )
4036 .unwrap();
4037
4038 layout.width
4039 }
4040
4041 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
4042 let digit_count = snapshot
4043 .max_buffer_row()
4044 .next_row()
4045 .as_f32()
4046 .log10()
4047 .floor() as usize
4048 + 1;
4049 self.column_pixels(digit_count, cx)
4050 }
4051
4052 #[allow(clippy::too_many_arguments)]
4053 fn layout_hunk_diff_close_indicators(
4054 &self,
4055 line_height: Pixels,
4056 scroll_pixel_position: gpui::Point<Pixels>,
4057 gutter_dimensions: &GutterDimensions,
4058 gutter_hitbox: &Hitbox,
4059 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4060 expanded_hunks_by_rows: HashMap<DisplayRow, ExpandedHunk>,
4061 cx: &mut WindowContext,
4062 ) -> Vec<AnyElement> {
4063 self.editor.update(cx, |editor, cx| {
4064 expanded_hunks_by_rows
4065 .into_iter()
4066 .map(|(display_row, hunk)| {
4067 let button = editor.close_hunk_diff_button(
4068 HoveredHunk {
4069 multi_buffer_range: hunk.hunk_range,
4070 status: hunk.status,
4071 diff_base_byte_range: hunk.diff_base_byte_range,
4072 },
4073 display_row,
4074 cx,
4075 );
4076
4077 prepaint_gutter_button(
4078 button,
4079 display_row,
4080 line_height,
4081 gutter_dimensions,
4082 scroll_pixel_position,
4083 gutter_hitbox,
4084 rows_with_hunk_bounds,
4085 cx,
4086 )
4087 })
4088 .collect()
4089 })
4090 }
4091}
4092
4093#[allow(clippy::too_many_arguments)]
4094fn prepaint_gutter_button(
4095 button: IconButton,
4096 row: DisplayRow,
4097 line_height: Pixels,
4098 gutter_dimensions: &GutterDimensions,
4099 scroll_pixel_position: gpui::Point<Pixels>,
4100 gutter_hitbox: &Hitbox,
4101 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4102 cx: &mut WindowContext<'_>,
4103) -> AnyElement {
4104 let mut button = button.into_any_element();
4105 let available_space = size(
4106 AvailableSpace::MinContent,
4107 AvailableSpace::Definite(line_height),
4108 );
4109 let indicator_size = button.layout_as_root(available_space, cx);
4110
4111 let blame_width = gutter_dimensions.git_blame_entries_width;
4112 let gutter_width = rows_with_hunk_bounds
4113 .get(&row)
4114 .map(|bounds| bounds.size.width);
4115 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
4116
4117 let mut x = left_offset;
4118 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
4119 - indicator_size.width
4120 - left_offset;
4121 x += available_width / 2.;
4122
4123 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
4124 y += (line_height - indicator_size.height) / 2.;
4125
4126 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
4127 button
4128}
4129
4130fn render_inline_blame_entry(
4131 blame: &gpui::Model<GitBlame>,
4132 blame_entry: BlameEntry,
4133 style: &EditorStyle,
4134 workspace: Option<WeakView<Workspace>>,
4135 cx: &mut WindowContext<'_>,
4136) -> AnyElement {
4137 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4138
4139 let author = blame_entry.author.as_deref().unwrap_or_default();
4140 let text = format!("{}, {}", author, relative_timestamp);
4141
4142 let details = blame.read(cx).details_for_entry(&blame_entry);
4143
4144 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
4145
4146 h_flex()
4147 .id("inline-blame")
4148 .w_full()
4149 .font_family(style.text.font().family)
4150 .text_color(cx.theme().status().hint)
4151 .line_height(style.text.line_height)
4152 .child(Icon::new(IconName::FileGit).color(Color::Hint))
4153 .child(text)
4154 .gap_2()
4155 .hoverable_tooltip(move |_| tooltip.clone().into())
4156 .into_any()
4157}
4158
4159fn render_blame_entry(
4160 ix: usize,
4161 blame: &gpui::Model<GitBlame>,
4162 blame_entry: BlameEntry,
4163 style: &EditorStyle,
4164 last_used_color: &mut Option<(PlayerColor, Oid)>,
4165 editor: View<Editor>,
4166 cx: &mut WindowContext<'_>,
4167) -> AnyElement {
4168 let mut sha_color = cx
4169 .theme()
4170 .players()
4171 .color_for_participant(blame_entry.sha.into());
4172 // If the last color we used is the same as the one we get for this line, but
4173 // the commit SHAs are different, then we try again to get a different color.
4174 match *last_used_color {
4175 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
4176 let index: u32 = blame_entry.sha.into();
4177 sha_color = cx.theme().players().color_for_participant(index + 1);
4178 }
4179 _ => {}
4180 };
4181 last_used_color.replace((sha_color, blame_entry.sha));
4182
4183 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4184
4185 let short_commit_id = blame_entry.sha.display_short();
4186
4187 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
4188 let name = util::truncate_and_trailoff(author_name, 20);
4189
4190 let details = blame.read(cx).details_for_entry(&blame_entry);
4191
4192 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
4193
4194 let tooltip = cx.new_view(|_| {
4195 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
4196 });
4197
4198 h_flex()
4199 .w_full()
4200 .font_family(style.text.font().family)
4201 .line_height(style.text.line_height)
4202 .id(("blame", ix))
4203 .children([
4204 div()
4205 .text_color(sha_color.cursor)
4206 .child(short_commit_id)
4207 .mr_2(),
4208 div()
4209 .w_full()
4210 .h_flex()
4211 .justify_between()
4212 .text_color(cx.theme().status().hint)
4213 .child(name)
4214 .child(relative_timestamp),
4215 ])
4216 .on_mouse_down(MouseButton::Right, {
4217 let blame_entry = blame_entry.clone();
4218 let details = details.clone();
4219 move |event, cx| {
4220 deploy_blame_entry_context_menu(
4221 &blame_entry,
4222 details.as_ref(),
4223 editor.clone(),
4224 event.position,
4225 cx,
4226 );
4227 }
4228 })
4229 .hover(|style| style.bg(cx.theme().colors().element_hover))
4230 .when_some(
4231 details.and_then(|details| details.permalink),
4232 |this, url| {
4233 let url = url.clone();
4234 this.cursor_pointer().on_click(move |_, cx| {
4235 cx.stop_propagation();
4236 cx.open_url(url.as_str())
4237 })
4238 },
4239 )
4240 .hoverable_tooltip(move |_| tooltip.clone().into())
4241 .into_any()
4242}
4243
4244fn deploy_blame_entry_context_menu(
4245 blame_entry: &BlameEntry,
4246 details: Option<&CommitDetails>,
4247 editor: View<Editor>,
4248 position: gpui::Point<Pixels>,
4249 cx: &mut WindowContext<'_>,
4250) {
4251 let context_menu = ContextMenu::build(cx, move |menu, _| {
4252 let sha = format!("{}", blame_entry.sha);
4253 menu.on_blur_subscription(Subscription::new(|| {}))
4254 .entry("Copy commit SHA", None, move |cx| {
4255 cx.write_to_clipboard(ClipboardItem::new(sha.clone()));
4256 })
4257 .when_some(
4258 details.and_then(|details| details.permalink.clone()),
4259 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
4260 )
4261 });
4262
4263 editor.update(cx, move |editor, cx| {
4264 editor.mouse_context_menu = Some(MouseContextMenu::pinned_to_screen(
4265 position,
4266 context_menu,
4267 cx,
4268 ));
4269 cx.notify();
4270 });
4271}
4272
4273#[derive(Debug)]
4274pub(crate) struct LineWithInvisibles {
4275 fragments: SmallVec<[LineFragment; 1]>,
4276 invisibles: Vec<Invisible>,
4277 len: usize,
4278 width: Pixels,
4279 font_size: Pixels,
4280}
4281
4282#[allow(clippy::large_enum_variant)]
4283enum LineFragment {
4284 Text(ShapedLine),
4285 Element {
4286 element: Option<AnyElement>,
4287 size: Size<Pixels>,
4288 len: usize,
4289 },
4290}
4291
4292impl fmt::Debug for LineFragment {
4293 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
4294 match self {
4295 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
4296 LineFragment::Element { size, len, .. } => f
4297 .debug_struct("Element")
4298 .field("size", size)
4299 .field("len", len)
4300 .finish(),
4301 }
4302 }
4303}
4304
4305impl LineWithInvisibles {
4306 fn from_chunks<'a>(
4307 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
4308 text_style: &TextStyle,
4309 max_line_len: usize,
4310 max_line_count: usize,
4311 line_number_layouts: &[Option<ShapedLine>],
4312 editor_mode: EditorMode,
4313 cx: &mut WindowContext,
4314 ) -> Vec<Self> {
4315 let mut layouts = Vec::with_capacity(max_line_count);
4316 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
4317 let mut line = String::new();
4318 let mut invisibles = Vec::new();
4319 let mut width = Pixels::ZERO;
4320 let mut len = 0;
4321 let mut styles = Vec::new();
4322 let mut non_whitespace_added = false;
4323 let mut row = 0;
4324 let mut line_exceeded_max_len = false;
4325 let font_size = text_style.font_size.to_pixels(cx.rem_size());
4326
4327 let ellipsis = SharedString::from("⋯");
4328
4329 for highlighted_chunk in chunks.chain([HighlightedChunk {
4330 text: "\n",
4331 style: None,
4332 is_tab: false,
4333 renderer: None,
4334 }]) {
4335 if let Some(renderer) = highlighted_chunk.renderer {
4336 if !line.is_empty() {
4337 let shaped_line = cx
4338 .text_system()
4339 .shape_line(line.clone().into(), font_size, &styles)
4340 .unwrap();
4341 width += shaped_line.width;
4342 len += shaped_line.len;
4343 fragments.push(LineFragment::Text(shaped_line));
4344 line.clear();
4345 styles.clear();
4346 }
4347
4348 let available_width = if renderer.constrain_width {
4349 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
4350 ellipsis.clone()
4351 } else {
4352 SharedString::from(Arc::from(highlighted_chunk.text))
4353 };
4354 let shaped_line = cx
4355 .text_system()
4356 .shape_line(
4357 chunk,
4358 font_size,
4359 &[text_style.to_run(highlighted_chunk.text.len())],
4360 )
4361 .unwrap();
4362 AvailableSpace::Definite(shaped_line.width)
4363 } else {
4364 AvailableSpace::MinContent
4365 };
4366
4367 let mut element = (renderer.render)(cx);
4368 let line_height = text_style.line_height_in_pixels(cx.rem_size());
4369 let size = element.layout_as_root(
4370 size(available_width, AvailableSpace::Definite(line_height)),
4371 cx,
4372 );
4373
4374 width += size.width;
4375 len += highlighted_chunk.text.len();
4376 fragments.push(LineFragment::Element {
4377 element: Some(element),
4378 size,
4379 len: highlighted_chunk.text.len(),
4380 });
4381 } else {
4382 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
4383 if ix > 0 {
4384 let shaped_line = cx
4385 .text_system()
4386 .shape_line(line.clone().into(), font_size, &styles)
4387 .unwrap();
4388 width += shaped_line.width;
4389 len += shaped_line.len;
4390 fragments.push(LineFragment::Text(shaped_line));
4391 layouts.push(Self {
4392 width: mem::take(&mut width),
4393 len: mem::take(&mut len),
4394 fragments: mem::take(&mut fragments),
4395 invisibles: std::mem::take(&mut invisibles),
4396 font_size,
4397 });
4398
4399 line.clear();
4400 styles.clear();
4401 row += 1;
4402 line_exceeded_max_len = false;
4403 non_whitespace_added = false;
4404 if row == max_line_count {
4405 return layouts;
4406 }
4407 }
4408
4409 if !line_chunk.is_empty() && !line_exceeded_max_len {
4410 let text_style = if let Some(style) = highlighted_chunk.style {
4411 Cow::Owned(text_style.clone().highlight(style))
4412 } else {
4413 Cow::Borrowed(text_style)
4414 };
4415
4416 if line.len() + line_chunk.len() > max_line_len {
4417 let mut chunk_len = max_line_len - line.len();
4418 while !line_chunk.is_char_boundary(chunk_len) {
4419 chunk_len -= 1;
4420 }
4421 line_chunk = &line_chunk[..chunk_len];
4422 line_exceeded_max_len = true;
4423 }
4424
4425 styles.push(TextRun {
4426 len: line_chunk.len(),
4427 font: text_style.font(),
4428 color: text_style.color,
4429 background_color: text_style.background_color,
4430 underline: text_style.underline,
4431 strikethrough: text_style.strikethrough,
4432 });
4433
4434 if editor_mode == EditorMode::Full {
4435 // Line wrap pads its contents with fake whitespaces,
4436 // avoid printing them
4437 let inside_wrapped_string = line_number_layouts
4438 .get(row)
4439 .and_then(|layout| layout.as_ref())
4440 .is_none();
4441 if highlighted_chunk.is_tab {
4442 if non_whitespace_added || !inside_wrapped_string {
4443 invisibles.push(Invisible::Tab {
4444 line_start_offset: line.len(),
4445 line_end_offset: line.len() + line_chunk.len(),
4446 });
4447 }
4448 } else {
4449 invisibles.extend(
4450 line_chunk
4451 .bytes()
4452 .enumerate()
4453 .filter(|(_, line_byte)| {
4454 let is_whitespace =
4455 (*line_byte as char).is_whitespace();
4456 non_whitespace_added |= !is_whitespace;
4457 is_whitespace
4458 && (non_whitespace_added || !inside_wrapped_string)
4459 })
4460 .map(|(whitespace_index, _)| Invisible::Whitespace {
4461 line_offset: line.len() + whitespace_index,
4462 }),
4463 )
4464 }
4465 }
4466
4467 line.push_str(line_chunk);
4468 }
4469 }
4470 }
4471 }
4472
4473 layouts
4474 }
4475
4476 fn prepaint(
4477 &mut self,
4478 line_height: Pixels,
4479 scroll_pixel_position: gpui::Point<Pixels>,
4480 row: DisplayRow,
4481 content_origin: gpui::Point<Pixels>,
4482 line_elements: &mut SmallVec<[AnyElement; 1]>,
4483 cx: &mut WindowContext,
4484 ) {
4485 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
4486 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
4487 for fragment in &mut self.fragments {
4488 match fragment {
4489 LineFragment::Text(line) => {
4490 fragment_origin.x += line.width;
4491 }
4492 LineFragment::Element { element, size, .. } => {
4493 let mut element = element
4494 .take()
4495 .expect("you can't prepaint LineWithInvisibles twice");
4496
4497 // Center the element vertically within the line.
4498 let mut element_origin = fragment_origin;
4499 element_origin.y += (line_height - size.height) / 2.;
4500 element.prepaint_at(element_origin, cx);
4501 line_elements.push(element);
4502
4503 fragment_origin.x += size.width;
4504 }
4505 }
4506 }
4507 }
4508
4509 fn draw(
4510 &self,
4511 layout: &EditorLayout,
4512 row: DisplayRow,
4513 content_origin: gpui::Point<Pixels>,
4514 whitespace_setting: ShowWhitespaceSetting,
4515 selection_ranges: &[Range<DisplayPoint>],
4516 cx: &mut WindowContext,
4517 ) {
4518 let line_height = layout.position_map.line_height;
4519 let line_y = line_height
4520 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
4521
4522 let mut fragment_origin =
4523 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
4524
4525 for fragment in &self.fragments {
4526 match fragment {
4527 LineFragment::Text(line) => {
4528 line.paint(fragment_origin, line_height, cx).log_err();
4529 fragment_origin.x += line.width;
4530 }
4531 LineFragment::Element { size, .. } => {
4532 fragment_origin.x += size.width;
4533 }
4534 }
4535 }
4536
4537 self.draw_invisibles(
4538 &selection_ranges,
4539 layout,
4540 content_origin,
4541 line_y,
4542 row,
4543 line_height,
4544 whitespace_setting,
4545 cx,
4546 );
4547 }
4548
4549 #[allow(clippy::too_many_arguments)]
4550 fn draw_invisibles(
4551 &self,
4552 selection_ranges: &[Range<DisplayPoint>],
4553 layout: &EditorLayout,
4554 content_origin: gpui::Point<Pixels>,
4555 line_y: Pixels,
4556 row: DisplayRow,
4557 line_height: Pixels,
4558 whitespace_setting: ShowWhitespaceSetting,
4559 cx: &mut WindowContext,
4560 ) {
4561 let extract_whitespace_info = |invisible: &Invisible| {
4562 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
4563 Invisible::Tab {
4564 line_start_offset,
4565 line_end_offset,
4566 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
4567 Invisible::Whitespace { line_offset } => {
4568 (*line_offset, line_offset + 1, &layout.space_invisible)
4569 }
4570 };
4571
4572 let x_offset = self.x_for_index(token_offset);
4573 let invisible_offset =
4574 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
4575 let origin = content_origin
4576 + gpui::point(
4577 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
4578 line_y,
4579 );
4580
4581 (
4582 [token_offset, token_end_offset],
4583 Box::new(move |cx: &mut WindowContext| {
4584 invisible_symbol.paint(origin, line_height, cx).log_err();
4585 }),
4586 )
4587 };
4588
4589 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
4590 match whitespace_setting {
4591 ShowWhitespaceSetting::None => return,
4592 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
4593 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
4594 let invisible_point = DisplayPoint::new(row, start as u32);
4595 if !selection_ranges
4596 .iter()
4597 .any(|region| region.start <= invisible_point && invisible_point < region.end)
4598 {
4599 return;
4600 }
4601
4602 paint(cx);
4603 }),
4604
4605 // For a whitespace to be on a boundary, any of the following conditions need to be met:
4606 // - It is a tab
4607 // - It is adjacent to an edge (start or end)
4608 // - It is adjacent to a whitespace (left or right)
4609 ShowWhitespaceSetting::Boundary => {
4610 // 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
4611 // the above cases.
4612 // Note: We zip in the original `invisibles` to check for tab equality
4613 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
4614 for (([start, end], paint), invisible) in
4615 invisible_iter.zip_eq(self.invisibles.iter())
4616 {
4617 let should_render = match (&last_seen, invisible) {
4618 (_, Invisible::Tab { .. }) => true,
4619 (Some((_, last_end, _)), _) => *last_end == start,
4620 _ => false,
4621 };
4622
4623 if should_render || start == 0 || end == self.len {
4624 paint(cx);
4625
4626 // Since we are scanning from the left, we will skip over the first available whitespace that is part
4627 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
4628 if let Some((should_render_last, last_end, paint_last)) = last_seen {
4629 // Note that we need to make sure that the last one is actually adjacent
4630 if !should_render_last && last_end == start {
4631 paint_last(cx);
4632 }
4633 }
4634 }
4635
4636 // Manually render anything within a selection
4637 let invisible_point = DisplayPoint::new(row, start as u32);
4638 if selection_ranges.iter().any(|region| {
4639 region.start <= invisible_point && invisible_point < region.end
4640 }) {
4641 paint(cx);
4642 }
4643
4644 last_seen = Some((should_render, end, paint));
4645 }
4646 }
4647 };
4648 }
4649
4650 pub fn x_for_index(&self, index: usize) -> Pixels {
4651 let mut fragment_start_x = Pixels::ZERO;
4652 let mut fragment_start_index = 0;
4653
4654 for fragment in &self.fragments {
4655 match fragment {
4656 LineFragment::Text(shaped_line) => {
4657 let fragment_end_index = fragment_start_index + shaped_line.len;
4658 if index < fragment_end_index {
4659 return fragment_start_x
4660 + shaped_line.x_for_index(index - fragment_start_index);
4661 }
4662 fragment_start_x += shaped_line.width;
4663 fragment_start_index = fragment_end_index;
4664 }
4665 LineFragment::Element { len, size, .. } => {
4666 let fragment_end_index = fragment_start_index + len;
4667 if index < fragment_end_index {
4668 return fragment_start_x;
4669 }
4670 fragment_start_x += size.width;
4671 fragment_start_index = fragment_end_index;
4672 }
4673 }
4674 }
4675
4676 fragment_start_x
4677 }
4678
4679 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
4680 let mut fragment_start_x = Pixels::ZERO;
4681 let mut fragment_start_index = 0;
4682
4683 for fragment in &self.fragments {
4684 match fragment {
4685 LineFragment::Text(shaped_line) => {
4686 let fragment_end_x = fragment_start_x + shaped_line.width;
4687 if x < fragment_end_x {
4688 return Some(
4689 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
4690 );
4691 }
4692 fragment_start_x = fragment_end_x;
4693 fragment_start_index += shaped_line.len;
4694 }
4695 LineFragment::Element { len, size, .. } => {
4696 let fragment_end_x = fragment_start_x + size.width;
4697 if x < fragment_end_x {
4698 return Some(fragment_start_index);
4699 }
4700 fragment_start_index += len;
4701 fragment_start_x = fragment_end_x;
4702 }
4703 }
4704 }
4705
4706 None
4707 }
4708
4709 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
4710 let mut fragment_start_index = 0;
4711
4712 for fragment in &self.fragments {
4713 match fragment {
4714 LineFragment::Text(shaped_line) => {
4715 let fragment_end_index = fragment_start_index + shaped_line.len;
4716 if index < fragment_end_index {
4717 return shaped_line.font_id_for_index(index - fragment_start_index);
4718 }
4719 fragment_start_index = fragment_end_index;
4720 }
4721 LineFragment::Element { len, .. } => {
4722 let fragment_end_index = fragment_start_index + len;
4723 if index < fragment_end_index {
4724 return None;
4725 }
4726 fragment_start_index = fragment_end_index;
4727 }
4728 }
4729 }
4730
4731 None
4732 }
4733}
4734
4735#[derive(Debug, Clone, Copy, PartialEq, Eq)]
4736enum Invisible {
4737 /// A tab character
4738 ///
4739 /// A tab character is internally represented by spaces (configured by the user's tab width)
4740 /// aligned to the nearest column, so it's necessary to store the start and end offset for
4741 /// adjacency checks.
4742 Tab {
4743 line_start_offset: usize,
4744 line_end_offset: usize,
4745 },
4746 Whitespace {
4747 line_offset: usize,
4748 },
4749}
4750
4751impl EditorElement {
4752 /// Returns the rem size to use when rendering the [`EditorElement`].
4753 ///
4754 /// This allows UI elements to scale based on the `buffer_font_size`.
4755 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
4756 match self.editor.read(cx).mode {
4757 EditorMode::Full => {
4758 let buffer_font_size = self.style.text.font_size;
4759 match buffer_font_size {
4760 AbsoluteLength::Pixels(pixels) => {
4761 let rem_size_scale = {
4762 // Our default UI font size is 14px on a 16px base scale.
4763 // This means the default UI font size is 0.875rems.
4764 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
4765
4766 // We then determine the delta between a single rem and the default font
4767 // size scale.
4768 let default_font_size_delta = 1. - default_font_size_scale;
4769
4770 // Finally, we add this delta to 1rem to get the scale factor that
4771 // should be used to scale up the UI.
4772 1. + default_font_size_delta
4773 };
4774
4775 Some(pixels * rem_size_scale)
4776 }
4777 AbsoluteLength::Rems(rems) => {
4778 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
4779 }
4780 }
4781 }
4782 // We currently use single-line and auto-height editors in UI contexts,
4783 // so we don't want to scale everything with the buffer font size, as it
4784 // ends up looking off.
4785 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
4786 }
4787 }
4788}
4789
4790impl Element for EditorElement {
4791 type RequestLayoutState = ();
4792 type PrepaintState = EditorLayout;
4793
4794 fn id(&self) -> Option<ElementId> {
4795 None
4796 }
4797
4798 fn request_layout(
4799 &mut self,
4800 _: Option<&GlobalElementId>,
4801 cx: &mut WindowContext,
4802 ) -> (gpui::LayoutId, ()) {
4803 let rem_size = self.rem_size(cx);
4804 cx.with_rem_size(rem_size, |cx| {
4805 self.editor.update(cx, |editor, cx| {
4806 editor.set_style(self.style.clone(), cx);
4807
4808 let layout_id = match editor.mode {
4809 EditorMode::SingleLine { auto_width } => {
4810 let rem_size = cx.rem_size();
4811
4812 let height = self.style.text.line_height_in_pixels(rem_size);
4813 if auto_width {
4814 let editor_handle = cx.view().clone();
4815 let style = self.style.clone();
4816 cx.request_measured_layout(Style::default(), move |_, _, cx| {
4817 let editor_snapshot =
4818 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
4819 let line = Self::layout_lines(
4820 DisplayRow(0)..DisplayRow(1),
4821 &[],
4822 &editor_snapshot,
4823 &style,
4824 cx,
4825 )
4826 .pop()
4827 .unwrap();
4828
4829 let font_id = cx.text_system().resolve_font(&style.text.font());
4830 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4831 let em_width = cx
4832 .text_system()
4833 .typographic_bounds(font_id, font_size, 'm')
4834 .unwrap()
4835 .size
4836 .width;
4837
4838 size(line.width + em_width, height)
4839 })
4840 } else {
4841 let mut style = Style::default();
4842 style.size.height = height.into();
4843 style.size.width = relative(1.).into();
4844 cx.request_layout(style, None)
4845 }
4846 }
4847 EditorMode::AutoHeight { max_lines } => {
4848 let editor_handle = cx.view().clone();
4849 let max_line_number_width =
4850 self.max_line_number_width(&editor.snapshot(cx), cx);
4851 cx.request_measured_layout(
4852 Style::default(),
4853 move |known_dimensions, available_space, cx| {
4854 editor_handle
4855 .update(cx, |editor, cx| {
4856 compute_auto_height_layout(
4857 editor,
4858 max_lines,
4859 max_line_number_width,
4860 known_dimensions,
4861 available_space.width,
4862 cx,
4863 )
4864 })
4865 .unwrap_or_default()
4866 },
4867 )
4868 }
4869 EditorMode::Full => {
4870 let mut style = Style::default();
4871 style.size.width = relative(1.).into();
4872 style.size.height = relative(1.).into();
4873 cx.request_layout(style, None)
4874 }
4875 };
4876
4877 (layout_id, ())
4878 })
4879 })
4880 }
4881
4882 fn prepaint(
4883 &mut self,
4884 _: Option<&GlobalElementId>,
4885 bounds: Bounds<Pixels>,
4886 _: &mut Self::RequestLayoutState,
4887 cx: &mut WindowContext,
4888 ) -> Self::PrepaintState {
4889 let text_style = TextStyleRefinement {
4890 font_size: Some(self.style.text.font_size),
4891 line_height: Some(self.style.text.line_height),
4892 ..Default::default()
4893 };
4894 let focus_handle = self.editor.focus_handle(cx);
4895 cx.set_view_id(self.editor.entity_id());
4896 cx.set_focus_handle(&focus_handle);
4897
4898 let rem_size = self.rem_size(cx);
4899 cx.with_rem_size(rem_size, |cx| {
4900 cx.with_text_style(Some(text_style), |cx| {
4901 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
4902 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
4903 let style = self.style.clone();
4904
4905 let font_id = cx.text_system().resolve_font(&style.text.font());
4906 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4907 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4908 let em_width = cx
4909 .text_system()
4910 .typographic_bounds(font_id, font_size, 'm')
4911 .unwrap()
4912 .size
4913 .width;
4914 let em_advance = cx
4915 .text_system()
4916 .advance(font_id, font_size, 'm')
4917 .unwrap()
4918 .width;
4919
4920 let gutter_dimensions = snapshot.gutter_dimensions(
4921 font_id,
4922 font_size,
4923 em_width,
4924 self.max_line_number_width(&snapshot, cx),
4925 cx,
4926 );
4927 let text_width = bounds.size.width - gutter_dimensions.width;
4928
4929 let right_margin = if snapshot.mode == EditorMode::Full {
4930 EditorElement::SCROLLBAR_WIDTH
4931 } else {
4932 px(0.)
4933 };
4934 let overscroll = size(em_width + right_margin, px(0.));
4935
4936 snapshot = self.editor.update(cx, |editor, cx| {
4937 editor.last_bounds = Some(bounds);
4938 editor.gutter_dimensions = gutter_dimensions;
4939 editor.set_visible_line_count(bounds.size.height / line_height, cx);
4940
4941 let editor_width =
4942 text_width - gutter_dimensions.margin - overscroll.width - em_width;
4943 let wrap_width = match editor.soft_wrap_mode(cx) {
4944 SoftWrap::None => None,
4945 SoftWrap::PreferLine => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
4946 SoftWrap::EditorWidth => Some(editor_width),
4947 SoftWrap::Column(column) => {
4948 Some(editor_width.min(column as f32 * em_advance))
4949 }
4950 };
4951
4952 if editor.set_wrap_width(wrap_width, cx) {
4953 editor.snapshot(cx)
4954 } else {
4955 snapshot
4956 }
4957 });
4958
4959 let wrap_guides = self
4960 .editor
4961 .read(cx)
4962 .wrap_guides(cx)
4963 .iter()
4964 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
4965 .collect::<SmallVec<[_; 2]>>();
4966
4967 let hitbox = cx.insert_hitbox(bounds, false);
4968 let gutter_hitbox =
4969 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
4970 let text_hitbox = cx.insert_hitbox(
4971 Bounds {
4972 origin: gutter_hitbox.upper_right(),
4973 size: size(text_width, bounds.size.height),
4974 },
4975 false,
4976 );
4977 // Offset the content_bounds from the text_bounds by the gutter margin (which
4978 // is roughly half a character wide) to make hit testing work more like how we want.
4979 let content_origin =
4980 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
4981
4982 let height_in_lines = bounds.size.height / line_height;
4983 let max_row = snapshot.max_point().row().as_f32();
4984 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
4985 (max_row - height_in_lines + 1.).max(0.)
4986 } else {
4987 let settings = EditorSettings::get_global(cx);
4988 match settings.scroll_beyond_last_line {
4989 ScrollBeyondLastLine::OnePage => max_row,
4990 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
4991 ScrollBeyondLastLine::VerticalScrollMargin => {
4992 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
4993 .max(0.)
4994 }
4995 }
4996 };
4997
4998 let mut autoscroll_containing_element = false;
4999 let mut autoscroll_horizontally = false;
5000 self.editor.update(cx, |editor, cx| {
5001 autoscroll_containing_element =
5002 editor.autoscroll_requested() || editor.has_pending_selection();
5003 autoscroll_horizontally =
5004 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
5005 snapshot = editor.snapshot(cx);
5006 });
5007
5008 let mut scroll_position = snapshot.scroll_position();
5009 // The scroll position is a fractional point, the whole number of which represents
5010 // the top of the window in terms of display rows.
5011 let start_row = DisplayRow(scroll_position.y as u32);
5012 let max_row = snapshot.max_point().row();
5013 let end_row = cmp::min(
5014 (scroll_position.y + height_in_lines).ceil() as u32,
5015 max_row.next_row().0,
5016 );
5017 let end_row = DisplayRow(end_row);
5018
5019 let buffer_rows = snapshot
5020 .buffer_rows(start_row)
5021 .take((start_row..end_row).len())
5022 .collect::<Vec<_>>();
5023
5024 let start_anchor = if start_row == Default::default() {
5025 Anchor::min()
5026 } else {
5027 snapshot.buffer_snapshot.anchor_before(
5028 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
5029 )
5030 };
5031 let end_anchor = if end_row > max_row {
5032 Anchor::max()
5033 } else {
5034 snapshot.buffer_snapshot.anchor_before(
5035 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
5036 )
5037 };
5038
5039 let highlighted_rows = self
5040 .editor
5041 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
5042 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
5043 start_anchor..end_anchor,
5044 &snapshot.display_snapshot,
5045 cx.theme().colors(),
5046 );
5047 let highlighted_gutter_ranges =
5048 self.editor.read(cx).gutter_highlights_in_range(
5049 start_anchor..end_anchor,
5050 &snapshot.display_snapshot,
5051 cx,
5052 );
5053
5054 let redacted_ranges = self.editor.read(cx).redacted_ranges(
5055 start_anchor..end_anchor,
5056 &snapshot.display_snapshot,
5057 cx,
5058 );
5059
5060 let (selections, active_rows, newest_selection_head) = self.layout_selections(
5061 start_anchor,
5062 end_anchor,
5063 &snapshot,
5064 start_row,
5065 end_row,
5066 cx,
5067 );
5068
5069 let line_numbers = self.layout_line_numbers(
5070 start_row..end_row,
5071 buffer_rows.iter().copied(),
5072 &active_rows,
5073 newest_selection_head,
5074 &snapshot,
5075 cx,
5076 );
5077
5078 let mut gutter_fold_toggles =
5079 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5080 self.layout_gutter_fold_toggles(
5081 start_row..end_row,
5082 buffer_rows.iter().copied(),
5083 &active_rows,
5084 &snapshot,
5085 cx,
5086 )
5087 });
5088 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5089 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
5090 });
5091
5092 let display_hunks = self.layout_gutter_git_hunks(
5093 line_height,
5094 &gutter_hitbox,
5095 start_row..end_row,
5096 &snapshot,
5097 cx,
5098 );
5099
5100 let mut max_visible_line_width = Pixels::ZERO;
5101 let mut line_layouts = Self::layout_lines(
5102 start_row..end_row,
5103 &line_numbers,
5104 &snapshot,
5105 &self.style,
5106 cx,
5107 );
5108 for line_with_invisibles in &line_layouts {
5109 if line_with_invisibles.width > max_visible_line_width {
5110 max_visible_line_width = line_with_invisibles.width;
5111 }
5112 }
5113
5114 let longest_line_width =
5115 layout_line(snapshot.longest_row(), &snapshot, &style, cx).width;
5116 let mut scroll_width =
5117 longest_line_width.max(max_visible_line_width) + overscroll.width;
5118
5119 let mut blocks = cx.with_element_namespace("blocks", |cx| {
5120 self.render_blocks(
5121 start_row..end_row,
5122 &snapshot,
5123 &hitbox,
5124 &text_hitbox,
5125 &mut scroll_width,
5126 &gutter_dimensions,
5127 em_width,
5128 gutter_dimensions.full_width(),
5129 line_height,
5130 &line_layouts,
5131 cx,
5132 )
5133 });
5134
5135 let start_buffer_row =
5136 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
5137 let end_buffer_row =
5138 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
5139
5140 let scroll_max = point(
5141 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5142 max_row.as_f32(),
5143 );
5144
5145 self.editor.update(cx, |editor, cx| {
5146 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5147
5148 let autoscrolled = if autoscroll_horizontally {
5149 editor.autoscroll_horizontally(
5150 start_row,
5151 text_hitbox.size.width,
5152 scroll_width,
5153 em_width,
5154 &line_layouts,
5155 cx,
5156 )
5157 } else {
5158 false
5159 };
5160
5161 if clamped || autoscrolled {
5162 snapshot = editor.snapshot(cx);
5163 scroll_position = snapshot.scroll_position();
5164 }
5165 });
5166
5167 let scroll_pixel_position = point(
5168 scroll_position.x * em_width,
5169 scroll_position.y * line_height,
5170 );
5171
5172 let indent_guides = self.layout_indent_guides(
5173 content_origin,
5174 text_hitbox.origin,
5175 start_buffer_row..end_buffer_row,
5176 scroll_pixel_position,
5177 line_height,
5178 &snapshot,
5179 cx,
5180 );
5181
5182 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5183 self.prepaint_crease_trailers(
5184 crease_trailers,
5185 &line_layouts,
5186 line_height,
5187 content_origin,
5188 scroll_pixel_position,
5189 em_width,
5190 cx,
5191 )
5192 });
5193
5194 let mut inline_blame = None;
5195 if let Some(newest_selection_head) = newest_selection_head {
5196 let display_row = newest_selection_head.row();
5197 if (start_row..end_row).contains(&display_row) {
5198 let line_ix = display_row.minus(start_row) as usize;
5199 let line_layout = &line_layouts[line_ix];
5200 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
5201 inline_blame = self.layout_inline_blame(
5202 display_row,
5203 &snapshot.display_snapshot,
5204 line_layout,
5205 crease_trailer_layout,
5206 em_width,
5207 content_origin,
5208 scroll_pixel_position,
5209 line_height,
5210 cx,
5211 );
5212 }
5213 }
5214
5215 let blamed_display_rows = self.layout_blame_entries(
5216 buffer_rows.into_iter(),
5217 em_width,
5218 scroll_position,
5219 line_height,
5220 &gutter_hitbox,
5221 gutter_dimensions.git_blame_entries_width,
5222 cx,
5223 );
5224
5225 let scroll_max = point(
5226 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5227 max_scroll_top,
5228 );
5229
5230 self.editor.update(cx, |editor, cx| {
5231 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5232
5233 let autoscrolled = if autoscroll_horizontally {
5234 editor.autoscroll_horizontally(
5235 start_row,
5236 text_hitbox.size.width,
5237 scroll_width,
5238 em_width,
5239 &line_layouts,
5240 cx,
5241 )
5242 } else {
5243 false
5244 };
5245
5246 if clamped || autoscrolled {
5247 snapshot = editor.snapshot(cx);
5248 scroll_position = snapshot.scroll_position();
5249 }
5250 });
5251
5252 let line_elements = self.prepaint_lines(
5253 start_row,
5254 &mut line_layouts,
5255 line_height,
5256 scroll_pixel_position,
5257 content_origin,
5258 cx,
5259 );
5260
5261 cx.with_element_namespace("blocks", |cx| {
5262 self.layout_blocks(
5263 &mut blocks,
5264 &hitbox,
5265 line_height,
5266 scroll_pixel_position,
5267 cx,
5268 );
5269 });
5270
5271 let cursors = self.collect_cursors(&snapshot, cx);
5272 let visible_row_range = start_row..end_row;
5273 let non_visible_cursors = cursors
5274 .iter()
5275 .any(move |c| !visible_row_range.contains(&c.0.row()));
5276
5277 let visible_cursors = self.layout_visible_cursors(
5278 &snapshot,
5279 &selections,
5280 start_row..end_row,
5281 &line_layouts,
5282 &text_hitbox,
5283 content_origin,
5284 scroll_position,
5285 scroll_pixel_position,
5286 line_height,
5287 em_width,
5288 autoscroll_containing_element,
5289 cx,
5290 );
5291
5292 let scrollbar_layout = self.layout_scrollbar(
5293 &snapshot,
5294 bounds,
5295 scroll_position,
5296 height_in_lines,
5297 non_visible_cursors,
5298 cx,
5299 );
5300
5301 let gutter_settings = EditorSettings::get_global(cx).gutter;
5302
5303 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
5304 editor
5305 .expanded_hunks
5306 .hunks(false)
5307 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
5308 .map(|expanded_hunk| {
5309 let start_row = expanded_hunk
5310 .hunk_range
5311 .start
5312 .to_display_point(&snapshot)
5313 .row();
5314 (start_row, expanded_hunk.clone())
5315 })
5316 .collect::<HashMap<_, _>>()
5317 });
5318
5319 let rows_with_hunk_bounds = display_hunks
5320 .iter()
5321 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
5322 .fold(
5323 HashMap::default(),
5324 |mut rows_with_hunk_bounds, (hunk, bounds)| {
5325 match hunk {
5326 DisplayDiffHunk::Folded { display_row } => {
5327 rows_with_hunk_bounds.insert(*display_row, bounds);
5328 }
5329 DisplayDiffHunk::Unfolded {
5330 display_row_range, ..
5331 } => {
5332 for display_row in display_row_range.iter_rows() {
5333 rows_with_hunk_bounds.insert(display_row, bounds);
5334 }
5335 }
5336 }
5337 rows_with_hunk_bounds
5338 },
5339 );
5340 let mut _context_menu_visible = false;
5341 let mut code_actions_indicator = None;
5342 if let Some(newest_selection_head) = newest_selection_head {
5343 if (start_row..end_row).contains(&newest_selection_head.row()) {
5344 _context_menu_visible = self.layout_context_menu(
5345 line_height,
5346 &hitbox,
5347 &text_hitbox,
5348 content_origin,
5349 start_row,
5350 scroll_pixel_position,
5351 &line_layouts,
5352 newest_selection_head,
5353 gutter_dimensions.width - gutter_dimensions.left_padding,
5354 cx,
5355 );
5356
5357 let show_code_actions = snapshot
5358 .show_code_actions
5359 .unwrap_or_else(|| gutter_settings.code_actions);
5360 if show_code_actions {
5361 let newest_selection_point =
5362 newest_selection_head.to_point(&snapshot.display_snapshot);
5363 let newest_selection_display_row =
5364 newest_selection_point.to_display_point(&snapshot).row();
5365 if !expanded_add_hunks_by_rows
5366 .contains_key(&newest_selection_display_row)
5367 {
5368 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
5369 MultiBufferRow(newest_selection_point.row),
5370 );
5371 if let Some((buffer, range)) = buffer {
5372 let buffer_id = buffer.remote_id();
5373 let row = range.start.row;
5374 let has_test_indicator = self
5375 .editor
5376 .read(cx)
5377 .tasks
5378 .contains_key(&(buffer_id, row));
5379
5380 if !has_test_indicator {
5381 code_actions_indicator = self
5382 .layout_code_actions_indicator(
5383 line_height,
5384 newest_selection_head,
5385 scroll_pixel_position,
5386 &gutter_dimensions,
5387 &gutter_hitbox,
5388 &rows_with_hunk_bounds,
5389 cx,
5390 );
5391 }
5392 }
5393 }
5394 }
5395 }
5396 }
5397
5398 let test_indicators = if gutter_settings.runnables {
5399 self.layout_run_indicators(
5400 line_height,
5401 scroll_pixel_position,
5402 &gutter_dimensions,
5403 &gutter_hitbox,
5404 &rows_with_hunk_bounds,
5405 &snapshot,
5406 cx,
5407 )
5408 } else {
5409 Vec::new()
5410 };
5411
5412 let close_indicators = self.layout_hunk_diff_close_indicators(
5413 line_height,
5414 scroll_pixel_position,
5415 &gutter_dimensions,
5416 &gutter_hitbox,
5417 &rows_with_hunk_bounds,
5418 expanded_add_hunks_by_rows,
5419 cx,
5420 );
5421
5422 self.layout_signature_help(
5423 &hitbox,
5424 content_origin,
5425 scroll_pixel_position,
5426 newest_selection_head,
5427 start_row,
5428 &line_layouts,
5429 line_height,
5430 em_width,
5431 cx,
5432 );
5433
5434 if !cx.has_active_drag() {
5435 self.layout_hover_popovers(
5436 &snapshot,
5437 &hitbox,
5438 &text_hitbox,
5439 start_row..end_row,
5440 content_origin,
5441 scroll_pixel_position,
5442 &line_layouts,
5443 line_height,
5444 em_width,
5445 cx,
5446 );
5447 }
5448
5449 let mouse_context_menu =
5450 self.layout_mouse_context_menu(&snapshot, start_row..end_row, cx);
5451
5452 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5453 self.prepaint_gutter_fold_toggles(
5454 &mut gutter_fold_toggles,
5455 line_height,
5456 &gutter_dimensions,
5457 gutter_settings,
5458 scroll_pixel_position,
5459 &gutter_hitbox,
5460 cx,
5461 )
5462 });
5463
5464 let invisible_symbol_font_size = font_size / 2.;
5465 let tab_invisible = cx
5466 .text_system()
5467 .shape_line(
5468 "→".into(),
5469 invisible_symbol_font_size,
5470 &[TextRun {
5471 len: "→".len(),
5472 font: self.style.text.font(),
5473 color: cx.theme().colors().editor_invisible,
5474 background_color: None,
5475 underline: None,
5476 strikethrough: None,
5477 }],
5478 )
5479 .unwrap();
5480 let space_invisible = cx
5481 .text_system()
5482 .shape_line(
5483 "•".into(),
5484 invisible_symbol_font_size,
5485 &[TextRun {
5486 len: "•".len(),
5487 font: self.style.text.font(),
5488 color: cx.theme().colors().editor_invisible,
5489 background_color: None,
5490 underline: None,
5491 strikethrough: None,
5492 }],
5493 )
5494 .unwrap();
5495
5496 EditorLayout {
5497 mode: snapshot.mode,
5498 position_map: Rc::new(PositionMap {
5499 size: bounds.size,
5500 scroll_pixel_position,
5501 scroll_max,
5502 line_layouts,
5503 line_height,
5504 em_width,
5505 em_advance,
5506 snapshot,
5507 }),
5508 visible_display_row_range: start_row..end_row,
5509 wrap_guides,
5510 indent_guides,
5511 hitbox,
5512 text_hitbox,
5513 gutter_hitbox,
5514 gutter_dimensions,
5515 display_hunks,
5516 content_origin,
5517 scrollbar_layout,
5518 active_rows,
5519 highlighted_rows,
5520 highlighted_ranges,
5521 highlighted_gutter_ranges,
5522 redacted_ranges,
5523 line_elements,
5524 line_numbers,
5525 blamed_display_rows,
5526 inline_blame,
5527 blocks,
5528 cursors,
5529 visible_cursors,
5530 selections,
5531 mouse_context_menu,
5532 test_indicators,
5533 close_indicators,
5534 code_actions_indicator,
5535 gutter_fold_toggles,
5536 crease_trailers,
5537 tab_invisible,
5538 space_invisible,
5539 }
5540 })
5541 })
5542 })
5543 }
5544
5545 fn paint(
5546 &mut self,
5547 _: Option<&GlobalElementId>,
5548 bounds: Bounds<gpui::Pixels>,
5549 _: &mut Self::RequestLayoutState,
5550 layout: &mut Self::PrepaintState,
5551 cx: &mut WindowContext,
5552 ) {
5553 let focus_handle = self.editor.focus_handle(cx);
5554 let key_context = self.editor.read(cx).key_context(cx);
5555 cx.set_key_context(key_context);
5556 cx.handle_input(
5557 &focus_handle,
5558 ElementInputHandler::new(bounds, self.editor.clone()),
5559 );
5560 self.register_actions(cx);
5561 self.register_key_listeners(cx, layout);
5562
5563 let text_style = TextStyleRefinement {
5564 font_size: Some(self.style.text.font_size),
5565 line_height: Some(self.style.text.line_height),
5566 ..Default::default()
5567 };
5568 let mouse_position = cx.mouse_position();
5569 let hovered_hunk = layout
5570 .display_hunks
5571 .iter()
5572 .find_map(|(hunk, hunk_hitbox)| match hunk {
5573 DisplayDiffHunk::Folded { .. } => None,
5574 DisplayDiffHunk::Unfolded {
5575 diff_base_byte_range,
5576 multi_buffer_range,
5577 status,
5578 ..
5579 } => {
5580 if hunk_hitbox
5581 .as_ref()
5582 .map(|hitbox| hitbox.contains(&mouse_position))
5583 .unwrap_or(false)
5584 {
5585 Some(HoveredHunk {
5586 status: *status,
5587 multi_buffer_range: multi_buffer_range.clone(),
5588 diff_base_byte_range: diff_base_byte_range.clone(),
5589 })
5590 } else {
5591 None
5592 }
5593 }
5594 });
5595 let rem_size = self.rem_size(cx);
5596 cx.with_rem_size(rem_size, |cx| {
5597 cx.with_text_style(Some(text_style), |cx| {
5598 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
5599 self.paint_mouse_listeners(layout, hovered_hunk, cx);
5600 self.paint_background(layout, cx);
5601 self.paint_indent_guides(layout, cx);
5602
5603 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5604 self.paint_blamed_display_rows(layout, cx);
5605 self.paint_line_numbers(layout, cx);
5606 }
5607
5608 self.paint_text(layout, cx);
5609
5610 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5611 self.paint_gutter_highlights(layout, cx);
5612 self.paint_gutter_indicators(layout, cx);
5613 }
5614
5615 if !layout.blocks.is_empty() {
5616 cx.with_element_namespace("blocks", |cx| {
5617 self.paint_blocks(layout, cx);
5618 });
5619 }
5620
5621 self.paint_scrollbar(layout, cx);
5622 self.paint_mouse_context_menu(layout, cx);
5623 });
5624 })
5625 })
5626 }
5627}
5628
5629pub(super) fn gutter_bounds(
5630 editor_bounds: Bounds<Pixels>,
5631 gutter_dimensions: GutterDimensions,
5632) -> Bounds<Pixels> {
5633 Bounds {
5634 origin: editor_bounds.origin,
5635 size: size(gutter_dimensions.width, editor_bounds.size.height),
5636 }
5637}
5638
5639impl IntoElement for EditorElement {
5640 type Element = Self;
5641
5642 fn into_element(self) -> Self::Element {
5643 self
5644 }
5645}
5646
5647pub struct EditorLayout {
5648 position_map: Rc<PositionMap>,
5649 hitbox: Hitbox,
5650 text_hitbox: Hitbox,
5651 gutter_hitbox: Hitbox,
5652 gutter_dimensions: GutterDimensions,
5653 content_origin: gpui::Point<Pixels>,
5654 scrollbar_layout: Option<ScrollbarLayout>,
5655 mode: EditorMode,
5656 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
5657 indent_guides: Option<Vec<IndentGuideLayout>>,
5658 visible_display_row_range: Range<DisplayRow>,
5659 active_rows: BTreeMap<DisplayRow, bool>,
5660 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
5661 line_elements: SmallVec<[AnyElement; 1]>,
5662 line_numbers: Vec<Option<ShapedLine>>,
5663 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
5664 blamed_display_rows: Option<Vec<AnyElement>>,
5665 inline_blame: Option<AnyElement>,
5666 blocks: Vec<BlockLayout>,
5667 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5668 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5669 redacted_ranges: Vec<Range<DisplayPoint>>,
5670 cursors: Vec<(DisplayPoint, Hsla)>,
5671 visible_cursors: Vec<CursorLayout>,
5672 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
5673 code_actions_indicator: Option<AnyElement>,
5674 test_indicators: Vec<AnyElement>,
5675 close_indicators: Vec<AnyElement>,
5676 gutter_fold_toggles: Vec<Option<AnyElement>>,
5677 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
5678 mouse_context_menu: Option<AnyElement>,
5679 tab_invisible: ShapedLine,
5680 space_invisible: ShapedLine,
5681}
5682
5683impl EditorLayout {
5684 fn line_end_overshoot(&self) -> Pixels {
5685 0.15 * self.position_map.line_height
5686 }
5687}
5688
5689struct ColoredRange<T> {
5690 start: T,
5691 end: T,
5692 color: Hsla,
5693}
5694
5695#[derive(Clone)]
5696struct ScrollbarLayout {
5697 hitbox: Hitbox,
5698 visible_row_range: Range<f32>,
5699 visible: bool,
5700 row_height: Pixels,
5701 thumb_height: Pixels,
5702}
5703
5704impl ScrollbarLayout {
5705 const BORDER_WIDTH: Pixels = px(1.0);
5706 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
5707 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
5708 const MIN_THUMB_HEIGHT: Pixels = px(20.0);
5709
5710 fn thumb_bounds(&self) -> Bounds<Pixels> {
5711 let thumb_top = self.y_for_row(self.visible_row_range.start);
5712 let thumb_bottom = thumb_top + self.thumb_height;
5713 Bounds::from_corners(
5714 point(self.hitbox.left(), thumb_top),
5715 point(self.hitbox.right(), thumb_bottom),
5716 )
5717 }
5718
5719 fn y_for_row(&self, row: f32) -> Pixels {
5720 self.hitbox.top() + row * self.row_height
5721 }
5722
5723 fn marker_quads_for_ranges(
5724 &self,
5725 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
5726 column: Option<usize>,
5727 ) -> Vec<PaintQuad> {
5728 struct MinMax {
5729 min: Pixels,
5730 max: Pixels,
5731 }
5732 let (x_range, height_limit) = if let Some(column) = column {
5733 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
5734 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
5735 let end = start + column_width;
5736 (
5737 Range { start, end },
5738 MinMax {
5739 min: Self::MIN_MARKER_HEIGHT,
5740 max: px(f32::MAX),
5741 },
5742 )
5743 } else {
5744 (
5745 Range {
5746 start: Self::BORDER_WIDTH,
5747 end: self.hitbox.size.width,
5748 },
5749 MinMax {
5750 min: Self::LINE_MARKER_HEIGHT,
5751 max: Self::LINE_MARKER_HEIGHT,
5752 },
5753 )
5754 };
5755
5756 let row_to_y = |row: DisplayRow| row.as_f32() * self.row_height;
5757 let mut pixel_ranges = row_ranges
5758 .into_iter()
5759 .map(|range| {
5760 let start_y = row_to_y(range.start);
5761 let end_y = row_to_y(range.end)
5762 + self.row_height.max(height_limit.min).min(height_limit.max);
5763 ColoredRange {
5764 start: start_y,
5765 end: end_y,
5766 color: range.color,
5767 }
5768 })
5769 .peekable();
5770
5771 let mut quads = Vec::new();
5772 while let Some(mut pixel_range) = pixel_ranges.next() {
5773 while let Some(next_pixel_range) = pixel_ranges.peek() {
5774 if pixel_range.end >= next_pixel_range.start - px(1.0)
5775 && pixel_range.color == next_pixel_range.color
5776 {
5777 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
5778 pixel_ranges.next();
5779 } else {
5780 break;
5781 }
5782 }
5783
5784 let bounds = Bounds::from_corners(
5785 point(x_range.start, pixel_range.start),
5786 point(x_range.end, pixel_range.end),
5787 );
5788 quads.push(quad(
5789 bounds,
5790 Corners::default(),
5791 pixel_range.color,
5792 Edges::default(),
5793 Hsla::transparent_black(),
5794 ));
5795 }
5796
5797 quads
5798 }
5799}
5800
5801struct CreaseTrailerLayout {
5802 element: AnyElement,
5803 bounds: Bounds<Pixels>,
5804}
5805
5806struct PositionMap {
5807 size: Size<Pixels>,
5808 line_height: Pixels,
5809 scroll_pixel_position: gpui::Point<Pixels>,
5810 scroll_max: gpui::Point<f32>,
5811 em_width: Pixels,
5812 em_advance: Pixels,
5813 line_layouts: Vec<LineWithInvisibles>,
5814 snapshot: EditorSnapshot,
5815}
5816
5817#[derive(Debug, Copy, Clone)]
5818pub struct PointForPosition {
5819 pub previous_valid: DisplayPoint,
5820 pub next_valid: DisplayPoint,
5821 pub exact_unclipped: DisplayPoint,
5822 pub column_overshoot_after_line_end: u32,
5823}
5824
5825impl PointForPosition {
5826 pub fn as_valid(&self) -> Option<DisplayPoint> {
5827 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
5828 Some(self.previous_valid)
5829 } else {
5830 None
5831 }
5832 }
5833}
5834
5835impl PositionMap {
5836 fn point_for_position(
5837 &self,
5838 text_bounds: Bounds<Pixels>,
5839 position: gpui::Point<Pixels>,
5840 ) -> PointForPosition {
5841 let scroll_position = self.snapshot.scroll_position();
5842 let position = position - text_bounds.origin;
5843 let y = position.y.max(px(0.)).min(self.size.height);
5844 let x = position.x + (scroll_position.x * self.em_width);
5845 let row = ((y / self.line_height) + scroll_position.y) as u32;
5846
5847 let (column, x_overshoot_after_line_end) = if let Some(line) = self
5848 .line_layouts
5849 .get(row as usize - scroll_position.y as usize)
5850 {
5851 if let Some(ix) = line.index_for_x(x) {
5852 (ix as u32, px(0.))
5853 } else {
5854 (line.len as u32, px(0.).max(x - line.width))
5855 }
5856 } else {
5857 (0, x)
5858 };
5859
5860 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
5861 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
5862 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
5863
5864 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
5865 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
5866 PointForPosition {
5867 previous_valid,
5868 next_valid,
5869 exact_unclipped,
5870 column_overshoot_after_line_end,
5871 }
5872 }
5873}
5874
5875struct BlockLayout {
5876 id: BlockId,
5877 row: Option<DisplayRow>,
5878 element: AnyElement,
5879 available_space: Size<AvailableSpace>,
5880 style: BlockStyle,
5881}
5882
5883fn layout_line(
5884 row: DisplayRow,
5885 snapshot: &EditorSnapshot,
5886 style: &EditorStyle,
5887 cx: &mut WindowContext,
5888) -> LineWithInvisibles {
5889 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
5890 LineWithInvisibles::from_chunks(chunks, &style.text, MAX_LINE_LEN, 1, &[], snapshot.mode, cx)
5891 .pop()
5892 .unwrap()
5893}
5894
5895#[derive(Debug)]
5896pub struct IndentGuideLayout {
5897 origin: gpui::Point<Pixels>,
5898 length: Pixels,
5899 single_indent_width: Pixels,
5900 depth: u32,
5901 active: bool,
5902 settings: IndentGuideSettings,
5903}
5904
5905pub struct CursorLayout {
5906 origin: gpui::Point<Pixels>,
5907 block_width: Pixels,
5908 line_height: Pixels,
5909 color: Hsla,
5910 shape: CursorShape,
5911 block_text: Option<ShapedLine>,
5912 cursor_name: Option<AnyElement>,
5913}
5914
5915#[derive(Debug)]
5916pub struct CursorName {
5917 string: SharedString,
5918 color: Hsla,
5919 is_top_row: bool,
5920}
5921
5922impl CursorLayout {
5923 pub fn new(
5924 origin: gpui::Point<Pixels>,
5925 block_width: Pixels,
5926 line_height: Pixels,
5927 color: Hsla,
5928 shape: CursorShape,
5929 block_text: Option<ShapedLine>,
5930 ) -> CursorLayout {
5931 CursorLayout {
5932 origin,
5933 block_width,
5934 line_height,
5935 color,
5936 shape,
5937 block_text,
5938 cursor_name: None,
5939 }
5940 }
5941
5942 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
5943 Bounds {
5944 origin: self.origin + origin,
5945 size: size(self.block_width, self.line_height),
5946 }
5947 }
5948
5949 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
5950 match self.shape {
5951 CursorShape::Bar => Bounds {
5952 origin: self.origin + origin,
5953 size: size(px(2.0), self.line_height),
5954 },
5955 CursorShape::Block | CursorShape::Hollow => Bounds {
5956 origin: self.origin + origin,
5957 size: size(self.block_width, self.line_height),
5958 },
5959 CursorShape::Underscore => Bounds {
5960 origin: self.origin
5961 + origin
5962 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
5963 size: size(self.block_width, px(2.0)),
5964 },
5965 }
5966 }
5967
5968 pub fn layout(
5969 &mut self,
5970 origin: gpui::Point<Pixels>,
5971 cursor_name: Option<CursorName>,
5972 cx: &mut WindowContext,
5973 ) {
5974 if let Some(cursor_name) = cursor_name {
5975 let bounds = self.bounds(origin);
5976 let text_size = self.line_height / 1.5;
5977
5978 let name_origin = if cursor_name.is_top_row {
5979 point(bounds.right() - px(1.), bounds.top())
5980 } else {
5981 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
5982 };
5983 let mut name_element = div()
5984 .bg(self.color)
5985 .text_size(text_size)
5986 .px_0p5()
5987 .line_height(text_size + px(2.))
5988 .text_color(cursor_name.color)
5989 .child(cursor_name.string.clone())
5990 .into_any_element();
5991
5992 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
5993
5994 self.cursor_name = Some(name_element);
5995 }
5996 }
5997
5998 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
5999 let bounds = self.bounds(origin);
6000
6001 //Draw background or border quad
6002 let cursor = if matches!(self.shape, CursorShape::Hollow) {
6003 outline(bounds, self.color)
6004 } else {
6005 fill(bounds, self.color)
6006 };
6007
6008 if let Some(name) = &mut self.cursor_name {
6009 name.paint(cx);
6010 }
6011
6012 cx.paint_quad(cursor);
6013
6014 if let Some(block_text) = &self.block_text {
6015 block_text
6016 .paint(self.origin + origin, self.line_height, cx)
6017 .log_err();
6018 }
6019 }
6020
6021 pub fn shape(&self) -> CursorShape {
6022 self.shape
6023 }
6024}
6025
6026#[derive(Debug)]
6027pub struct HighlightedRange {
6028 pub start_y: Pixels,
6029 pub line_height: Pixels,
6030 pub lines: Vec<HighlightedRangeLine>,
6031 pub color: Hsla,
6032 pub corner_radius: Pixels,
6033}
6034
6035#[derive(Debug)]
6036pub struct HighlightedRangeLine {
6037 pub start_x: Pixels,
6038 pub end_x: Pixels,
6039}
6040
6041impl HighlightedRange {
6042 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
6043 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
6044 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
6045 self.paint_lines(
6046 self.start_y + self.line_height,
6047 &self.lines[1..],
6048 bounds,
6049 cx,
6050 );
6051 } else {
6052 self.paint_lines(self.start_y, &self.lines, bounds, cx);
6053 }
6054 }
6055
6056 fn paint_lines(
6057 &self,
6058 start_y: Pixels,
6059 lines: &[HighlightedRangeLine],
6060 _bounds: Bounds<Pixels>,
6061 cx: &mut WindowContext,
6062 ) {
6063 if lines.is_empty() {
6064 return;
6065 }
6066
6067 let first_line = lines.first().unwrap();
6068 let last_line = lines.last().unwrap();
6069
6070 let first_top_left = point(first_line.start_x, start_y);
6071 let first_top_right = point(first_line.end_x, start_y);
6072
6073 let curve_height = point(Pixels::ZERO, self.corner_radius);
6074 let curve_width = |start_x: Pixels, end_x: Pixels| {
6075 let max = (end_x - start_x) / 2.;
6076 let width = if max < self.corner_radius {
6077 max
6078 } else {
6079 self.corner_radius
6080 };
6081
6082 point(width, Pixels::ZERO)
6083 };
6084
6085 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
6086 let mut path = gpui::Path::new(first_top_right - top_curve_width);
6087 path.curve_to(first_top_right + curve_height, first_top_right);
6088
6089 let mut iter = lines.iter().enumerate().peekable();
6090 while let Some((ix, line)) = iter.next() {
6091 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
6092
6093 if let Some((_, next_line)) = iter.peek() {
6094 let next_top_right = point(next_line.end_x, bottom_right.y);
6095
6096 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
6097 Ordering::Equal => {
6098 path.line_to(bottom_right);
6099 }
6100 Ordering::Less => {
6101 let curve_width = curve_width(next_top_right.x, bottom_right.x);
6102 path.line_to(bottom_right - curve_height);
6103 if self.corner_radius > Pixels::ZERO {
6104 path.curve_to(bottom_right - curve_width, bottom_right);
6105 }
6106 path.line_to(next_top_right + curve_width);
6107 if self.corner_radius > Pixels::ZERO {
6108 path.curve_to(next_top_right + curve_height, next_top_right);
6109 }
6110 }
6111 Ordering::Greater => {
6112 let curve_width = curve_width(bottom_right.x, next_top_right.x);
6113 path.line_to(bottom_right - curve_height);
6114 if self.corner_radius > Pixels::ZERO {
6115 path.curve_to(bottom_right + curve_width, bottom_right);
6116 }
6117 path.line_to(next_top_right - curve_width);
6118 if self.corner_radius > Pixels::ZERO {
6119 path.curve_to(next_top_right + curve_height, next_top_right);
6120 }
6121 }
6122 }
6123 } else {
6124 let curve_width = curve_width(line.start_x, line.end_x);
6125 path.line_to(bottom_right - curve_height);
6126 if self.corner_radius > Pixels::ZERO {
6127 path.curve_to(bottom_right - curve_width, bottom_right);
6128 }
6129
6130 let bottom_left = point(line.start_x, bottom_right.y);
6131 path.line_to(bottom_left + curve_width);
6132 if self.corner_radius > Pixels::ZERO {
6133 path.curve_to(bottom_left - curve_height, bottom_left);
6134 }
6135 }
6136 }
6137
6138 if first_line.start_x > last_line.start_x {
6139 let curve_width = curve_width(last_line.start_x, first_line.start_x);
6140 let second_top_left = point(last_line.start_x, start_y + self.line_height);
6141 path.line_to(second_top_left + curve_height);
6142 if self.corner_radius > Pixels::ZERO {
6143 path.curve_to(second_top_left + curve_width, second_top_left);
6144 }
6145 let first_bottom_left = point(first_line.start_x, second_top_left.y);
6146 path.line_to(first_bottom_left - curve_width);
6147 if self.corner_radius > Pixels::ZERO {
6148 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
6149 }
6150 }
6151
6152 path.line_to(first_top_left + curve_height);
6153 if self.corner_radius > Pixels::ZERO {
6154 path.curve_to(first_top_left + top_curve_width, first_top_left);
6155 }
6156 path.line_to(first_top_right - top_curve_width);
6157
6158 cx.paint_path(path, self.color);
6159 }
6160}
6161
6162pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6163 (delta.pow(1.5) / 100.0).into()
6164}
6165
6166fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6167 (delta.pow(1.2) / 300.0).into()
6168}
6169
6170#[cfg(test)]
6171mod tests {
6172 use super::*;
6173 use crate::{
6174 display_map::{BlockDisposition, BlockProperties},
6175 editor_tests::{init_test, update_test_language_settings},
6176 Editor, MultiBuffer,
6177 };
6178 use gpui::{TestAppContext, VisualTestContext};
6179 use language::language_settings;
6180 use log::info;
6181 use std::num::NonZeroU32;
6182 use ui::Context;
6183 use util::test::sample_text;
6184
6185 #[gpui::test]
6186 fn test_shape_line_numbers(cx: &mut TestAppContext) {
6187 init_test(cx, |_| {});
6188 let window = cx.add_window(|cx| {
6189 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6190 Editor::new(EditorMode::Full, buffer, None, true, cx)
6191 });
6192
6193 let editor = window.root(cx).unwrap();
6194 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6195 let element = EditorElement::new(&editor, style);
6196 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
6197
6198 let layouts = cx
6199 .update_window(*window, |_, cx| {
6200 element.layout_line_numbers(
6201 DisplayRow(0)..DisplayRow(6),
6202 (0..6).map(MultiBufferRow).map(Some),
6203 &Default::default(),
6204 Some(DisplayPoint::new(DisplayRow(0), 0)),
6205 &snapshot,
6206 cx,
6207 )
6208 })
6209 .unwrap();
6210 assert_eq!(layouts.len(), 6);
6211
6212 let relative_rows = window
6213 .update(cx, |editor, cx| {
6214 let snapshot = editor.snapshot(cx);
6215 element.calculate_relative_line_numbers(
6216 &snapshot,
6217 &(DisplayRow(0)..DisplayRow(6)),
6218 Some(DisplayRow(3)),
6219 )
6220 })
6221 .unwrap();
6222 assert_eq!(relative_rows[&DisplayRow(0)], 3);
6223 assert_eq!(relative_rows[&DisplayRow(1)], 2);
6224 assert_eq!(relative_rows[&DisplayRow(2)], 1);
6225 // current line has no relative number
6226 assert_eq!(relative_rows[&DisplayRow(4)], 1);
6227 assert_eq!(relative_rows[&DisplayRow(5)], 2);
6228
6229 // works if cursor is before screen
6230 let relative_rows = window
6231 .update(cx, |editor, cx| {
6232 let snapshot = editor.snapshot(cx);
6233 element.calculate_relative_line_numbers(
6234 &snapshot,
6235 &(DisplayRow(3)..DisplayRow(6)),
6236 Some(DisplayRow(1)),
6237 )
6238 })
6239 .unwrap();
6240 assert_eq!(relative_rows.len(), 3);
6241 assert_eq!(relative_rows[&DisplayRow(3)], 2);
6242 assert_eq!(relative_rows[&DisplayRow(4)], 3);
6243 assert_eq!(relative_rows[&DisplayRow(5)], 4);
6244
6245 // works if cursor is after screen
6246 let relative_rows = window
6247 .update(cx, |editor, cx| {
6248 let snapshot = editor.snapshot(cx);
6249 element.calculate_relative_line_numbers(
6250 &snapshot,
6251 &(DisplayRow(0)..DisplayRow(3)),
6252 Some(DisplayRow(6)),
6253 )
6254 })
6255 .unwrap();
6256 assert_eq!(relative_rows.len(), 3);
6257 assert_eq!(relative_rows[&DisplayRow(0)], 5);
6258 assert_eq!(relative_rows[&DisplayRow(1)], 4);
6259 assert_eq!(relative_rows[&DisplayRow(2)], 3);
6260 }
6261
6262 #[gpui::test]
6263 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
6264 init_test(cx, |_| {});
6265
6266 let window = cx.add_window(|cx| {
6267 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
6268 Editor::new(EditorMode::Full, buffer, None, true, cx)
6269 });
6270 let cx = &mut VisualTestContext::from_window(*window, cx);
6271 let editor = window.root(cx).unwrap();
6272 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6273
6274 window
6275 .update(cx, |editor, cx| {
6276 editor.cursor_shape = CursorShape::Block;
6277 editor.change_selections(None, cx, |s| {
6278 s.select_ranges([
6279 Point::new(0, 0)..Point::new(1, 0),
6280 Point::new(3, 2)..Point::new(3, 3),
6281 Point::new(5, 6)..Point::new(6, 0),
6282 ]);
6283 });
6284 })
6285 .unwrap();
6286
6287 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6288 EditorElement::new(&editor, style)
6289 });
6290
6291 assert_eq!(state.selections.len(), 1);
6292 let local_selections = &state.selections[0].1;
6293 assert_eq!(local_selections.len(), 3);
6294 // moves cursor back one line
6295 assert_eq!(
6296 local_selections[0].head,
6297 DisplayPoint::new(DisplayRow(0), 6)
6298 );
6299 assert_eq!(
6300 local_selections[0].range,
6301 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
6302 );
6303
6304 // moves cursor back one column
6305 assert_eq!(
6306 local_selections[1].range,
6307 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
6308 );
6309 assert_eq!(
6310 local_selections[1].head,
6311 DisplayPoint::new(DisplayRow(3), 2)
6312 );
6313
6314 // leaves cursor on the max point
6315 assert_eq!(
6316 local_selections[2].range,
6317 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
6318 );
6319 assert_eq!(
6320 local_selections[2].head,
6321 DisplayPoint::new(DisplayRow(6), 0)
6322 );
6323
6324 // active lines does not include 1 (even though the range of the selection does)
6325 assert_eq!(
6326 state.active_rows.keys().cloned().collect::<Vec<_>>(),
6327 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
6328 );
6329
6330 // multi-buffer support
6331 // in DisplayPoint coordinates, this is what we're dealing with:
6332 // 0: [[file
6333 // 1: header
6334 // 2: section]]
6335 // 3: aaaaaa
6336 // 4: bbbbbb
6337 // 5: cccccc
6338 // 6:
6339 // 7: [[footer]]
6340 // 8: [[header]]
6341 // 9: ffffff
6342 // 10: gggggg
6343 // 11: hhhhhh
6344 // 12:
6345 // 13: [[footer]]
6346 // 14: [[file
6347 // 15: header
6348 // 16: section]]
6349 // 17: bbbbbb
6350 // 18: cccccc
6351 // 19: dddddd
6352 // 20: [[footer]]
6353 let window = cx.add_window(|cx| {
6354 let buffer = MultiBuffer::build_multi(
6355 [
6356 (
6357 &(sample_text(8, 6, 'a') + "\n"),
6358 vec![
6359 Point::new(0, 0)..Point::new(3, 0),
6360 Point::new(4, 0)..Point::new(7, 0),
6361 ],
6362 ),
6363 (
6364 &(sample_text(8, 6, 'a') + "\n"),
6365 vec![Point::new(1, 0)..Point::new(3, 0)],
6366 ),
6367 ],
6368 cx,
6369 );
6370 Editor::new(EditorMode::Full, buffer, None, true, cx)
6371 });
6372 let editor = window.root(cx).unwrap();
6373 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6374 let _state = window.update(cx, |editor, cx| {
6375 editor.cursor_shape = CursorShape::Block;
6376 editor.change_selections(None, cx, |s| {
6377 s.select_display_ranges([
6378 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
6379 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
6380 ]);
6381 });
6382 });
6383
6384 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6385 EditorElement::new(&editor, style)
6386 });
6387 assert_eq!(state.selections.len(), 1);
6388 let local_selections = &state.selections[0].1;
6389 assert_eq!(local_selections.len(), 2);
6390
6391 // moves cursor on excerpt boundary back a line
6392 // and doesn't allow selection to bleed through
6393 assert_eq!(
6394 local_selections[0].range,
6395 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
6396 );
6397 assert_eq!(
6398 local_selections[0].head,
6399 DisplayPoint::new(DisplayRow(6), 0)
6400 );
6401 // moves cursor on buffer boundary back two lines
6402 // and doesn't allow selection to bleed through
6403 assert_eq!(
6404 local_selections[1].range,
6405 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
6406 );
6407 assert_eq!(
6408 local_selections[1].head,
6409 DisplayPoint::new(DisplayRow(12), 0)
6410 );
6411 }
6412
6413 #[gpui::test]
6414 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
6415 init_test(cx, |_| {});
6416
6417 let window = cx.add_window(|cx| {
6418 let buffer = MultiBuffer::build_simple("", cx);
6419 Editor::new(EditorMode::Full, buffer, None, true, cx)
6420 });
6421 let cx = &mut VisualTestContext::from_window(*window, cx);
6422 let editor = window.root(cx).unwrap();
6423 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6424 window
6425 .update(cx, |editor, cx| {
6426 editor.set_placeholder_text("hello", cx);
6427 editor.insert_blocks(
6428 [BlockProperties {
6429 style: BlockStyle::Fixed,
6430 disposition: BlockDisposition::Above,
6431 height: 3,
6432 position: Anchor::min(),
6433 render: Box::new(|_| div().into_any()),
6434 }],
6435 None,
6436 cx,
6437 );
6438
6439 // Blur the editor so that it displays placeholder text.
6440 cx.blur();
6441 })
6442 .unwrap();
6443
6444 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6445 EditorElement::new(&editor, style)
6446 });
6447 assert_eq!(state.position_map.line_layouts.len(), 4);
6448 assert_eq!(
6449 state
6450 .line_numbers
6451 .iter()
6452 .map(Option::is_some)
6453 .collect::<Vec<_>>(),
6454 &[false, false, false, true]
6455 );
6456 }
6457
6458 #[gpui::test]
6459 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
6460 const TAB_SIZE: u32 = 4;
6461
6462 let input_text = "\t \t|\t| a b";
6463 let expected_invisibles = vec![
6464 Invisible::Tab {
6465 line_start_offset: 0,
6466 line_end_offset: TAB_SIZE as usize,
6467 },
6468 Invisible::Whitespace {
6469 line_offset: TAB_SIZE as usize,
6470 },
6471 Invisible::Tab {
6472 line_start_offset: TAB_SIZE as usize + 1,
6473 line_end_offset: TAB_SIZE as usize * 2,
6474 },
6475 Invisible::Tab {
6476 line_start_offset: TAB_SIZE as usize * 2 + 1,
6477 line_end_offset: TAB_SIZE as usize * 3,
6478 },
6479 Invisible::Whitespace {
6480 line_offset: TAB_SIZE as usize * 3 + 1,
6481 },
6482 Invisible::Whitespace {
6483 line_offset: TAB_SIZE as usize * 3 + 3,
6484 },
6485 ];
6486 assert_eq!(
6487 expected_invisibles.len(),
6488 input_text
6489 .chars()
6490 .filter(|initial_char| initial_char.is_whitespace())
6491 .count(),
6492 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6493 );
6494
6495 init_test(cx, |s| {
6496 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6497 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
6498 });
6499
6500 let actual_invisibles =
6501 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
6502
6503 assert_eq!(expected_invisibles, actual_invisibles);
6504 }
6505
6506 #[gpui::test]
6507 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
6508 init_test(cx, |s| {
6509 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6510 s.defaults.tab_size = NonZeroU32::new(4);
6511 });
6512
6513 for editor_mode_without_invisibles in [
6514 EditorMode::SingleLine { auto_width: false },
6515 EditorMode::AutoHeight { max_lines: 100 },
6516 ] {
6517 let invisibles = collect_invisibles_from_new_editor(
6518 cx,
6519 editor_mode_without_invisibles,
6520 "\t\t\t| | a b",
6521 px(500.0),
6522 );
6523 assert!(invisibles.is_empty(),
6524 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
6525 }
6526 }
6527
6528 #[gpui::test]
6529 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
6530 let tab_size = 4;
6531 let input_text = "a\tbcd ".repeat(9);
6532 let repeated_invisibles = [
6533 Invisible::Tab {
6534 line_start_offset: 1,
6535 line_end_offset: tab_size as usize,
6536 },
6537 Invisible::Whitespace {
6538 line_offset: tab_size as usize + 3,
6539 },
6540 Invisible::Whitespace {
6541 line_offset: tab_size as usize + 4,
6542 },
6543 Invisible::Whitespace {
6544 line_offset: tab_size as usize + 5,
6545 },
6546 Invisible::Whitespace {
6547 line_offset: tab_size as usize + 6,
6548 },
6549 Invisible::Whitespace {
6550 line_offset: tab_size as usize + 7,
6551 },
6552 ];
6553 let expected_invisibles = std::iter::once(repeated_invisibles)
6554 .cycle()
6555 .take(9)
6556 .flatten()
6557 .collect::<Vec<_>>();
6558 assert_eq!(
6559 expected_invisibles.len(),
6560 input_text
6561 .chars()
6562 .filter(|initial_char| initial_char.is_whitespace())
6563 .count(),
6564 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6565 );
6566 info!("Expected invisibles: {expected_invisibles:?}");
6567
6568 init_test(cx, |_| {});
6569
6570 // Put the same string with repeating whitespace pattern into editors of various size,
6571 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
6572 let resize_step = 10.0;
6573 let mut editor_width = 200.0;
6574 while editor_width <= 1000.0 {
6575 update_test_language_settings(cx, |s| {
6576 s.defaults.tab_size = NonZeroU32::new(tab_size);
6577 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6578 s.defaults.preferred_line_length = Some(editor_width as u32);
6579 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
6580 });
6581
6582 let actual_invisibles = collect_invisibles_from_new_editor(
6583 cx,
6584 EditorMode::Full,
6585 &input_text,
6586 px(editor_width),
6587 );
6588
6589 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
6590 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
6591 let mut i = 0;
6592 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
6593 i = actual_index;
6594 match expected_invisibles.get(i) {
6595 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
6596 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
6597 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
6598 _ => {
6599 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
6600 }
6601 },
6602 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
6603 }
6604 }
6605 let missing_expected_invisibles = &expected_invisibles[i + 1..];
6606 assert!(
6607 missing_expected_invisibles.is_empty(),
6608 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
6609 );
6610
6611 editor_width += resize_step;
6612 }
6613 }
6614
6615 fn collect_invisibles_from_new_editor(
6616 cx: &mut TestAppContext,
6617 editor_mode: EditorMode,
6618 input_text: &str,
6619 editor_width: Pixels,
6620 ) -> Vec<Invisible> {
6621 info!(
6622 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
6623 editor_width.0
6624 );
6625 let window = cx.add_window(|cx| {
6626 let buffer = MultiBuffer::build_simple(&input_text, cx);
6627 Editor::new(editor_mode, buffer, None, true, cx)
6628 });
6629 let cx = &mut VisualTestContext::from_window(*window, cx);
6630 let editor = window.root(cx).unwrap();
6631 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6632 window
6633 .update(cx, |editor, cx| {
6634 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
6635 editor.set_wrap_width(Some(editor_width), cx);
6636 })
6637 .unwrap();
6638 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6639 EditorElement::new(&editor, style)
6640 });
6641 state
6642 .position_map
6643 .line_layouts
6644 .iter()
6645 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
6646 .cloned()
6647 .collect()
6648 }
6649}
6650
6651pub fn register_action<T: Action>(
6652 view: &View<Editor>,
6653 cx: &mut WindowContext,
6654 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
6655) {
6656 let view = view.clone();
6657 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
6658 let action = action.downcast_ref().unwrap();
6659 if phase == DispatchPhase::Bubble {
6660 view.update(cx, |editor, cx| {
6661 listener(editor, action, cx);
6662 })
6663 }
6664 })
6665}
6666
6667fn compute_auto_height_layout(
6668 editor: &mut Editor,
6669 max_lines: usize,
6670 max_line_number_width: Pixels,
6671 known_dimensions: Size<Option<Pixels>>,
6672 available_width: AvailableSpace,
6673 cx: &mut ViewContext<Editor>,
6674) -> Option<Size<Pixels>> {
6675 let width = known_dimensions.width.or_else(|| {
6676 if let AvailableSpace::Definite(available_width) = available_width {
6677 Some(available_width)
6678 } else {
6679 None
6680 }
6681 })?;
6682 if let Some(height) = known_dimensions.height {
6683 return Some(size(width, height));
6684 }
6685
6686 let style = editor.style.as_ref().unwrap();
6687 let font_id = cx.text_system().resolve_font(&style.text.font());
6688 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6689 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6690 let em_width = cx
6691 .text_system()
6692 .typographic_bounds(font_id, font_size, 'm')
6693 .unwrap()
6694 .size
6695 .width;
6696
6697 let mut snapshot = editor.snapshot(cx);
6698 let gutter_dimensions =
6699 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
6700
6701 editor.gutter_dimensions = gutter_dimensions;
6702 let text_width = width - gutter_dimensions.width;
6703 let overscroll = size(em_width, px(0.));
6704
6705 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
6706 if editor.set_wrap_width(Some(editor_width), cx) {
6707 snapshot = editor.snapshot(cx);
6708 }
6709
6710 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
6711 let height = scroll_height
6712 .max(line_height)
6713 .min(line_height * max_lines as f32);
6714
6715 Some(size(width, height))
6716}