1use crate::{
2 blame_entry_tooltip::{blame_entry_relative_timestamp, BlameEntryTooltip},
3 code_context_menus::{CodeActionsMenu, MENU_ASIDE_MAX_WIDTH, MENU_ASIDE_MIN_WIDTH, MENU_GAP},
4 display_map::{
5 Block, BlockContext, BlockStyle, DisplaySnapshot, HighlightedChunk, ToDisplayPoint,
6 },
7 editor_settings::{
8 CurrentLineHighlight, DoubleClickInMultibuffer, MultiCursorModifier, ScrollBeyondLastLine,
9 ScrollbarDiagnostics, ShowScrollbar,
10 },
11 git::blame::{CommitDetails, GitBlame},
12 hover_popover::{
13 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
14 },
15 hunk_diff::{diff_hunk_to_display, DisplayDiffHunk},
16 hunk_status,
17 items::BufferSearchHighlights,
18 mouse_context_menu::{self, MenuPosition, MouseContextMenu},
19 scroll::{axis_pair, scroll_amount::ScrollAmount, AxisPair},
20 BlockId, ChunkReplacement, CursorShape, CustomBlockId, DisplayPoint, DisplayRow,
21 DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode, EditorSettings,
22 EditorSnapshot, EditorStyle, ExpandExcerpts, FocusedBlock, GutterDimensions, HalfPageDown,
23 HalfPageUp, HandleInput, HoveredCursor, HoveredHunk, InlineCompletion, JumpData, LineDown,
24 LineUp, OpenExcerpts, PageDown, PageUp, Point, RowExt, RowRangeExt, SelectPhase, Selection,
25 SoftWrap, StickyHeaderExcerpt, ToPoint, ToggleFold, CURSORS_VISIBLE_FOR, FILE_HEADER_HEIGHT,
26 GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED, MAX_LINE_LEN, MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
27};
28use client::ParticipantIndex;
29use collections::{BTreeMap, HashMap, HashSet};
30use file_icons::FileIcons;
31use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
32use gpui::{
33 anchored, deferred, div, fill, linear_color_stop, linear_gradient, outline, point, px, quad,
34 relative, size, svg, transparent_black, Action, AnyElement, AvailableSpace, Axis, Bounds,
35 ClickEvent, ClipboardItem, ContentMask, Corner, Corners, CursorStyle, DispatchPhase, Edges,
36 Element, ElementInputHandler, Entity, FontId, GlobalElementId, Hitbox, Hsla,
37 InteractiveElement, IntoElement, Length, ModifiersChangedEvent, MouseButton, MouseDownEvent,
38 MouseMoveEvent, MouseUpEvent, PaintQuad, ParentElement, Pixels, ScrollDelta, ScrollWheelEvent,
39 ShapedLine, SharedString, Size, StatefulInteractiveElement, Style, Styled, Subscription,
40 TextRun, TextStyleRefinement, View, ViewContext, WeakView, WindowContext,
41};
42use itertools::Itertools;
43use language::{
44 language_settings::{
45 IndentGuideBackgroundColoring, IndentGuideColoring, IndentGuideSettings,
46 ShowWhitespaceSetting,
47 },
48 ChunkRendererContext, DiagnosticEntry,
49};
50use lsp::DiagnosticSeverity;
51use multi_buffer::{
52 Anchor, AnchorRangeExt, ExcerptId, ExcerptInfo, ExpandExcerptDirection, MultiBufferPoint,
53 MultiBufferRow, MultiBufferSnapshot, ToOffset,
54};
55use project::project_settings::{GitGutterSetting, ProjectSettings};
56use settings::Settings;
57use smallvec::{smallvec, SmallVec};
58use std::{
59 any::TypeId,
60 borrow::Cow,
61 cmp::{self, Ordering},
62 fmt::{self, Write},
63 iter, mem,
64 ops::{Deref, Range},
65 rc::Rc,
66 sync::Arc,
67};
68use sum_tree::Bias;
69use text::BufferId;
70use theme::{ActiveTheme, Appearance, PlayerColor};
71use ui::{
72 prelude::*, ButtonLike, ButtonStyle, ContextMenu, KeyBinding, Tooltip, POPOVER_Y_PADDING,
73};
74use unicode_segmentation::UnicodeSegmentation;
75use util::{RangeExt, ResultExt};
76use workspace::{item::Item, Workspace};
77
78struct SelectionLayout {
79 head: DisplayPoint,
80 cursor_shape: CursorShape,
81 is_newest: bool,
82 is_local: bool,
83 range: Range<DisplayPoint>,
84 active_rows: Range<DisplayRow>,
85 user_name: Option<SharedString>,
86}
87
88impl SelectionLayout {
89 fn new<T: ToPoint + ToDisplayPoint + Clone>(
90 selection: Selection<T>,
91 line_mode: bool,
92 cursor_shape: CursorShape,
93 map: &DisplaySnapshot,
94 is_newest: bool,
95 is_local: bool,
96 user_name: Option<SharedString>,
97 ) -> Self {
98 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
99 let display_selection = point_selection.map(|p| p.to_display_point(map));
100 let mut range = display_selection.range();
101 let mut head = display_selection.head();
102 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
103 ..map.next_line_boundary(point_selection.end).1.row();
104
105 // vim visual line mode
106 if line_mode {
107 let point_range = map.expand_to_line(point_selection.range());
108 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
109 }
110
111 // any vim visual mode (including line mode)
112 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
113 && !range.is_empty()
114 && !selection.reversed
115 {
116 if head.column() > 0 {
117 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
118 } else if head.row().0 > 0 && head != map.max_point() {
119 head = map.clip_point(
120 DisplayPoint::new(
121 head.row().previous_row(),
122 map.line_len(head.row().previous_row()),
123 ),
124 Bias::Left,
125 );
126 // updating range.end is a no-op unless you're cursor is
127 // on the newline containing a multi-buffer divider
128 // in which case the clip_point may have moved the head up
129 // an additional row.
130 range.end = DisplayPoint::new(head.row().next_row(), 0);
131 active_rows.end = head.row();
132 }
133 }
134
135 Self {
136 head,
137 cursor_shape,
138 is_newest,
139 is_local,
140 range,
141 active_rows,
142 user_name,
143 }
144 }
145}
146
147pub struct EditorElement {
148 editor: View<Editor>,
149 style: EditorStyle,
150}
151
152type DisplayRowDelta = u32;
153
154impl EditorElement {
155 pub(crate) const SCROLLBAR_WIDTH: Pixels = px(15.);
156
157 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
158 Self {
159 editor: editor.clone(),
160 style,
161 }
162 }
163
164 fn register_actions(&self, cx: &mut WindowContext) {
165 let view = &self.editor;
166 view.update(cx, |editor, cx| {
167 for action in editor.editor_actions.borrow().values() {
168 (action)(cx)
169 }
170 });
171
172 crate::rust_analyzer_ext::apply_related_actions(view, cx);
173 crate::clangd_ext::apply_related_actions(view, cx);
174 register_action(view, cx, Editor::open_context_menu);
175 register_action(view, cx, Editor::move_left);
176 register_action(view, cx, Editor::move_right);
177 register_action(view, cx, Editor::move_down);
178 register_action(view, cx, Editor::move_down_by_lines);
179 register_action(view, cx, Editor::select_down_by_lines);
180 register_action(view, cx, Editor::move_up);
181 register_action(view, cx, Editor::move_up_by_lines);
182 register_action(view, cx, Editor::select_up_by_lines);
183 register_action(view, cx, Editor::select_page_down);
184 register_action(view, cx, Editor::select_page_up);
185 register_action(view, cx, Editor::cancel);
186 register_action(view, cx, Editor::newline);
187 register_action(view, cx, Editor::newline_above);
188 register_action(view, cx, Editor::newline_below);
189 register_action(view, cx, Editor::backspace);
190 register_action(view, cx, Editor::delete);
191 register_action(view, cx, Editor::tab);
192 register_action(view, cx, Editor::tab_prev);
193 register_action(view, cx, Editor::indent);
194 register_action(view, cx, Editor::outdent);
195 register_action(view, cx, Editor::autoindent);
196 register_action(view, cx, Editor::delete_line);
197 register_action(view, cx, Editor::join_lines);
198 register_action(view, cx, Editor::sort_lines_case_sensitive);
199 register_action(view, cx, Editor::sort_lines_case_insensitive);
200 register_action(view, cx, Editor::reverse_lines);
201 register_action(view, cx, Editor::shuffle_lines);
202 register_action(view, cx, Editor::convert_to_upper_case);
203 register_action(view, cx, Editor::convert_to_lower_case);
204 register_action(view, cx, Editor::convert_to_title_case);
205 register_action(view, cx, Editor::convert_to_snake_case);
206 register_action(view, cx, Editor::convert_to_kebab_case);
207 register_action(view, cx, Editor::convert_to_upper_camel_case);
208 register_action(view, cx, Editor::convert_to_lower_camel_case);
209 register_action(view, cx, Editor::convert_to_opposite_case);
210 register_action(view, cx, Editor::delete_to_previous_word_start);
211 register_action(view, cx, Editor::delete_to_previous_subword_start);
212 register_action(view, cx, Editor::delete_to_next_word_end);
213 register_action(view, cx, Editor::delete_to_next_subword_end);
214 register_action(view, cx, Editor::delete_to_beginning_of_line);
215 register_action(view, cx, Editor::delete_to_end_of_line);
216 register_action(view, cx, Editor::cut_to_end_of_line);
217 register_action(view, cx, Editor::duplicate_line_up);
218 register_action(view, cx, Editor::duplicate_line_down);
219 register_action(view, cx, Editor::duplicate_selection);
220 register_action(view, cx, Editor::move_line_up);
221 register_action(view, cx, Editor::move_line_down);
222 register_action(view, cx, Editor::transpose);
223 register_action(view, cx, Editor::rewrap);
224 register_action(view, cx, Editor::cut);
225 register_action(view, cx, Editor::kill_ring_cut);
226 register_action(view, cx, Editor::kill_ring_yank);
227 register_action(view, cx, Editor::copy);
228 register_action(view, cx, Editor::paste);
229 register_action(view, cx, Editor::undo);
230 register_action(view, cx, Editor::redo);
231 register_action(view, cx, Editor::move_page_up);
232 register_action(view, cx, Editor::move_page_down);
233 register_action(view, cx, Editor::next_screen);
234 register_action(view, cx, Editor::scroll_cursor_top);
235 register_action(view, cx, Editor::scroll_cursor_center);
236 register_action(view, cx, Editor::scroll_cursor_bottom);
237 register_action(view, cx, Editor::scroll_cursor_center_top_bottom);
238 register_action(view, cx, |editor, _: &LineDown, cx| {
239 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
240 });
241 register_action(view, cx, |editor, _: &LineUp, cx| {
242 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
243 });
244 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
245 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
246 });
247 register_action(view, cx, |editor, HandleInput(text): &HandleInput, cx| {
248 if text.is_empty() {
249 return;
250 }
251 editor.handle_input(text, cx);
252 });
253 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
254 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
255 });
256 register_action(view, cx, |editor, _: &PageDown, cx| {
257 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
258 });
259 register_action(view, cx, |editor, _: &PageUp, cx| {
260 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
261 });
262 register_action(view, cx, Editor::move_to_previous_word_start);
263 register_action(view, cx, Editor::move_to_previous_subword_start);
264 register_action(view, cx, Editor::move_to_next_word_end);
265 register_action(view, cx, Editor::move_to_next_subword_end);
266 register_action(view, cx, Editor::move_to_beginning_of_line);
267 register_action(view, cx, Editor::move_to_end_of_line);
268 register_action(view, cx, Editor::move_to_start_of_paragraph);
269 register_action(view, cx, Editor::move_to_end_of_paragraph);
270 register_action(view, cx, Editor::move_to_beginning);
271 register_action(view, cx, Editor::move_to_end);
272 register_action(view, cx, Editor::select_up);
273 register_action(view, cx, Editor::select_down);
274 register_action(view, cx, Editor::select_left);
275 register_action(view, cx, Editor::select_right);
276 register_action(view, cx, Editor::select_to_previous_word_start);
277 register_action(view, cx, Editor::select_to_previous_subword_start);
278 register_action(view, cx, Editor::select_to_next_word_end);
279 register_action(view, cx, Editor::select_to_next_subword_end);
280 register_action(view, cx, Editor::select_to_beginning_of_line);
281 register_action(view, cx, Editor::select_to_end_of_line);
282 register_action(view, cx, Editor::select_to_start_of_paragraph);
283 register_action(view, cx, Editor::select_to_end_of_paragraph);
284 register_action(view, cx, Editor::select_to_beginning);
285 register_action(view, cx, Editor::select_to_end);
286 register_action(view, cx, Editor::select_all);
287 register_action(view, cx, |editor, action, cx| {
288 editor.select_all_matches(action, cx).log_err();
289 });
290 register_action(view, cx, Editor::select_line);
291 register_action(view, cx, Editor::split_selection_into_lines);
292 register_action(view, cx, Editor::add_selection_above);
293 register_action(view, cx, Editor::add_selection_below);
294 register_action(view, cx, |editor, action, cx| {
295 editor.select_next(action, cx).log_err();
296 });
297 register_action(view, cx, |editor, action, cx| {
298 editor.select_previous(action, cx).log_err();
299 });
300 register_action(view, cx, Editor::toggle_comments);
301 register_action(view, cx, Editor::select_larger_syntax_node);
302 register_action(view, cx, Editor::select_smaller_syntax_node);
303 register_action(view, cx, Editor::select_enclosing_symbol);
304 register_action(view, cx, Editor::move_to_enclosing_bracket);
305 register_action(view, cx, Editor::undo_selection);
306 register_action(view, cx, Editor::redo_selection);
307 if !view.read(cx).is_singleton(cx) {
308 register_action(view, cx, Editor::expand_excerpts);
309 register_action(view, cx, Editor::expand_excerpts_up);
310 register_action(view, cx, Editor::expand_excerpts_down);
311 }
312 register_action(view, cx, Editor::go_to_diagnostic);
313 register_action(view, cx, Editor::go_to_prev_diagnostic);
314 register_action(view, cx, Editor::go_to_next_hunk);
315 register_action(view, cx, Editor::go_to_prev_hunk);
316 register_action(view, cx, |editor, a, cx| {
317 editor.go_to_definition(a, cx).detach_and_log_err(cx);
318 });
319 register_action(view, cx, |editor, a, cx| {
320 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
321 });
322 register_action(view, cx, |editor, a, cx| {
323 editor.go_to_declaration(a, cx).detach_and_log_err(cx);
324 });
325 register_action(view, cx, |editor, a, cx| {
326 editor.go_to_declaration_split(a, cx).detach_and_log_err(cx);
327 });
328 register_action(view, cx, |editor, a, cx| {
329 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
330 });
331 register_action(view, cx, |editor, a, cx| {
332 editor
333 .go_to_implementation_split(a, cx)
334 .detach_and_log_err(cx);
335 });
336 register_action(view, cx, |editor, a, cx| {
337 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
338 });
339 register_action(view, cx, |editor, a, cx| {
340 editor
341 .go_to_type_definition_split(a, cx)
342 .detach_and_log_err(cx);
343 });
344 register_action(view, cx, Editor::open_url);
345 register_action(view, cx, Editor::open_selected_filename);
346 register_action(view, cx, Editor::fold);
347 register_action(view, cx, Editor::fold_at_level);
348 register_action(view, cx, Editor::fold_all);
349 register_action(view, cx, Editor::fold_function_bodies);
350 register_action(view, cx, Editor::fold_at);
351 register_action(view, cx, Editor::fold_recursive);
352 register_action(view, cx, Editor::toggle_fold);
353 register_action(view, cx, Editor::toggle_fold_recursive);
354 register_action(view, cx, Editor::unfold_lines);
355 register_action(view, cx, Editor::unfold_recursive);
356 register_action(view, cx, Editor::unfold_all);
357 register_action(view, cx, Editor::unfold_at);
358 register_action(view, cx, Editor::fold_selected_ranges);
359 register_action(view, cx, Editor::show_completions);
360 register_action(view, cx, Editor::toggle_code_actions);
361 register_action(view, cx, Editor::open_excerpts);
362 register_action(view, cx, Editor::open_excerpts_in_split);
363 register_action(view, cx, Editor::open_proposed_changes_editor);
364 register_action(view, cx, Editor::toggle_soft_wrap);
365 register_action(view, cx, Editor::toggle_tab_bar);
366 register_action(view, cx, Editor::toggle_line_numbers);
367 register_action(view, cx, Editor::toggle_relative_line_numbers);
368 register_action(view, cx, Editor::toggle_indent_guides);
369 register_action(view, cx, Editor::toggle_inlay_hints);
370 register_action(view, cx, Editor::toggle_inline_completions);
371 register_action(view, cx, hover_popover::hover);
372 register_action(view, cx, Editor::reveal_in_finder);
373 register_action(view, cx, Editor::copy_path);
374 register_action(view, cx, Editor::copy_relative_path);
375 register_action(view, cx, Editor::copy_highlight_json);
376 register_action(view, cx, Editor::copy_permalink_to_line);
377 register_action(view, cx, Editor::open_permalink_to_line);
378 register_action(view, cx, Editor::copy_file_location);
379 register_action(view, cx, Editor::toggle_git_blame);
380 register_action(view, cx, Editor::toggle_git_blame_inline);
381 register_action(view, cx, Editor::toggle_hunk_diff);
382 register_action(view, cx, Editor::expand_all_hunk_diffs);
383 register_action(view, cx, |editor, action, cx| {
384 if let Some(task) = editor.format(action, cx) {
385 task.detach_and_log_err(cx);
386 } else {
387 cx.propagate();
388 }
389 });
390 register_action(view, cx, |editor, action, cx| {
391 if let Some(task) = editor.format_selections(action, cx) {
392 task.detach_and_log_err(cx);
393 } else {
394 cx.propagate();
395 }
396 });
397 register_action(view, cx, Editor::restart_language_server);
398 register_action(view, cx, Editor::cancel_language_server_work);
399 register_action(view, cx, Editor::show_character_palette);
400 register_action(view, cx, |editor, action, cx| {
401 if let Some(task) = editor.confirm_completion(action, cx) {
402 task.detach_and_log_err(cx);
403 } else {
404 cx.propagate();
405 }
406 });
407 register_action(view, cx, |editor, action, cx| {
408 if let Some(task) = editor.compose_completion(action, cx) {
409 task.detach_and_log_err(cx);
410 } else {
411 cx.propagate();
412 }
413 });
414 register_action(view, cx, |editor, action, cx| {
415 if let Some(task) = editor.confirm_code_action(action, cx) {
416 task.detach_and_log_err(cx);
417 } else {
418 cx.propagate();
419 }
420 });
421 register_action(view, cx, |editor, action, cx| {
422 if let Some(task) = editor.rename(action, cx) {
423 task.detach_and_log_err(cx);
424 } else {
425 cx.propagate();
426 }
427 });
428 register_action(view, cx, |editor, action, cx| {
429 if let Some(task) = editor.confirm_rename(action, cx) {
430 task.detach_and_log_err(cx);
431 } else {
432 cx.propagate();
433 }
434 });
435 register_action(view, cx, |editor, action, cx| {
436 if let Some(task) = editor.find_all_references(action, cx) {
437 task.detach_and_log_err(cx);
438 } else {
439 cx.propagate();
440 }
441 });
442 register_action(view, cx, Editor::show_signature_help);
443 register_action(view, cx, Editor::next_inline_completion);
444 register_action(view, cx, Editor::previous_inline_completion);
445 register_action(view, cx, Editor::show_inline_completion);
446 register_action(view, cx, Editor::context_menu_first);
447 register_action(view, cx, Editor::context_menu_prev);
448 register_action(view, cx, Editor::context_menu_next);
449 register_action(view, cx, Editor::context_menu_last);
450 register_action(view, cx, Editor::display_cursor_names);
451 register_action(view, cx, Editor::unique_lines_case_insensitive);
452 register_action(view, cx, Editor::unique_lines_case_sensitive);
453 register_action(view, cx, Editor::accept_partial_inline_completion);
454 register_action(view, cx, Editor::accept_inline_completion);
455 register_action(view, cx, Editor::revert_file);
456 register_action(view, cx, Editor::revert_selected_hunks);
457 register_action(view, cx, Editor::apply_all_diff_hunks);
458 register_action(view, cx, Editor::apply_selected_diff_hunks);
459 register_action(view, cx, Editor::open_active_item_in_terminal);
460 register_action(view, cx, Editor::reload_file);
461 register_action(view, cx, Editor::spawn_nearest_task);
462 register_action(view, cx, Editor::insert_uuid_v4);
463 register_action(view, cx, Editor::insert_uuid_v7);
464 }
465
466 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
467 let position_map = layout.position_map.clone();
468 cx.on_key_event({
469 let editor = self.editor.clone();
470 let text_hitbox = layout.text_hitbox.clone();
471 move |event: &ModifiersChangedEvent, phase, cx| {
472 if phase != DispatchPhase::Bubble {
473 return;
474 }
475 editor.update(cx, |editor, cx| {
476 if editor.hover_state.focused(cx) {
477 return;
478 }
479 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
480 })
481 }
482 });
483 }
484
485 fn modifiers_changed(
486 editor: &mut Editor,
487 event: &ModifiersChangedEvent,
488 position_map: &PositionMap,
489 text_hitbox: &Hitbox,
490 cx: &mut ViewContext<Editor>,
491 ) {
492 let mouse_position = cx.mouse_position();
493 if !text_hitbox.is_hovered(cx) {
494 return;
495 }
496
497 editor.update_hovered_link(
498 position_map.point_for_position(text_hitbox.bounds, mouse_position),
499 &position_map.snapshot,
500 event.modifiers,
501 cx,
502 )
503 }
504
505 #[allow(clippy::too_many_arguments)]
506 fn mouse_left_down(
507 editor: &mut Editor,
508 event: &MouseDownEvent,
509 hovered_hunk: Option<HoveredHunk>,
510 position_map: &PositionMap,
511 text_hitbox: &Hitbox,
512 gutter_hitbox: &Hitbox,
513 line_numbers: &HashMap<MultiBufferRow, (ShapedLine, Option<Hitbox>)>,
514 cx: &mut ViewContext<Editor>,
515 ) {
516 if cx.default_prevented() {
517 return;
518 }
519
520 let mut click_count = event.click_count;
521 let mut modifiers = event.modifiers;
522
523 if let Some(hovered_hunk) = hovered_hunk {
524 editor.toggle_hovered_hunk(&hovered_hunk, cx);
525 cx.notify();
526 return;
527 } else if gutter_hitbox.is_hovered(cx) {
528 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
529 } else if !text_hitbox.is_hovered(cx) {
530 return;
531 }
532
533 let is_singleton = editor.buffer().read(cx).is_singleton();
534
535 if click_count == 2 && !is_singleton {
536 match EditorSettings::get_global(cx).double_click_in_multibuffer {
537 DoubleClickInMultibuffer::Select => {
538 // do nothing special on double click, all selection logic is below
539 }
540 DoubleClickInMultibuffer::Open => {
541 if modifiers.alt {
542 // if double click is made with alt, pretend it's a regular double click without opening and alt,
543 // and run the selection logic.
544 modifiers.alt = false;
545 } else {
546 // if double click is made without alt, open the corresponding excerp
547 editor.open_excerpts(&OpenExcerpts, cx);
548 return;
549 }
550 }
551 }
552 }
553
554 let point_for_position =
555 position_map.point_for_position(text_hitbox.bounds, event.position);
556 let position = point_for_position.previous_valid;
557 if modifiers.shift && modifiers.alt {
558 editor.select(
559 SelectPhase::BeginColumnar {
560 position,
561 reset: false,
562 goal_column: point_for_position.exact_unclipped.column(),
563 },
564 cx,
565 );
566 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
567 {
568 editor.select(
569 SelectPhase::Extend {
570 position,
571 click_count,
572 },
573 cx,
574 );
575 } else {
576 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
577 let multi_cursor_modifier = match multi_cursor_setting {
578 MultiCursorModifier::Alt => modifiers.alt,
579 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
580 };
581 editor.select(
582 SelectPhase::Begin {
583 position,
584 add: multi_cursor_modifier,
585 click_count,
586 },
587 cx,
588 );
589 }
590 cx.stop_propagation();
591
592 if !is_singleton {
593 let display_row = (((event.position - gutter_hitbox.bounds.origin).y
594 + position_map.scroll_pixel_position.y)
595 / position_map.line_height) as u32;
596 let multi_buffer_row = position_map
597 .snapshot
598 .display_point_to_point(DisplayPoint::new(DisplayRow(display_row), 0), Bias::Right)
599 .row;
600 if let Some((_, Some(hitbox))) = line_numbers.get(&MultiBufferRow(multi_buffer_row)) {
601 if hitbox.contains(&event.position) {
602 let scroll_position_row =
603 position_map.scroll_pixel_position.y / position_map.line_height;
604 let line_offset_from_top = display_row - scroll_position_row as u32;
605
606 editor.open_excerpts_common(
607 Some(JumpData::MultiBufferRow {
608 row: MultiBufferRow(multi_buffer_row),
609 line_offset_from_top,
610 }),
611 modifiers.alt,
612 cx,
613 );
614 cx.stop_propagation();
615 }
616 }
617 }
618 }
619
620 fn mouse_right_down(
621 editor: &mut Editor,
622 event: &MouseDownEvent,
623 position_map: &PositionMap,
624 text_hitbox: &Hitbox,
625 cx: &mut ViewContext<Editor>,
626 ) {
627 if !text_hitbox.is_hovered(cx) {
628 return;
629 }
630 let point_for_position =
631 position_map.point_for_position(text_hitbox.bounds, event.position);
632 mouse_context_menu::deploy_context_menu(
633 editor,
634 Some(event.position),
635 point_for_position.previous_valid,
636 cx,
637 );
638 cx.stop_propagation();
639 }
640
641 fn mouse_middle_down(
642 editor: &mut Editor,
643 event: &MouseDownEvent,
644 position_map: &PositionMap,
645 text_hitbox: &Hitbox,
646 cx: &mut ViewContext<Editor>,
647 ) {
648 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
649 return;
650 }
651
652 let point_for_position =
653 position_map.point_for_position(text_hitbox.bounds, event.position);
654 let position = point_for_position.previous_valid;
655
656 editor.select(
657 SelectPhase::BeginColumnar {
658 position,
659 reset: true,
660 goal_column: point_for_position.exact_unclipped.column(),
661 },
662 cx,
663 );
664 }
665
666 fn mouse_up(
667 editor: &mut Editor,
668 event: &MouseUpEvent,
669 position_map: &PositionMap,
670 text_hitbox: &Hitbox,
671 cx: &mut ViewContext<Editor>,
672 ) {
673 let end_selection = editor.has_pending_selection();
674 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
675
676 if end_selection {
677 editor.select(SelectPhase::End, cx);
678 }
679
680 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
681 let multi_cursor_modifier = match multi_cursor_setting {
682 MultiCursorModifier::Alt => event.modifiers.secondary(),
683 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
684 };
685
686 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
687 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
688 editor.handle_click_hovered_link(point, event.modifiers, cx);
689
690 cx.stop_propagation();
691 } else if end_selection && pending_nonempty_selections {
692 cx.stop_propagation();
693 } else if cfg!(any(target_os = "linux", target_os = "freebsd"))
694 && event.button == MouseButton::Middle
695 {
696 if !text_hitbox.is_hovered(cx) || editor.read_only(cx) {
697 return;
698 }
699
700 #[cfg(any(target_os = "linux", target_os = "freebsd"))]
701 if EditorSettings::get_global(cx).middle_click_paste {
702 if let Some(text) = cx.read_from_primary().and_then(|item| item.text()) {
703 let point_for_position =
704 position_map.point_for_position(text_hitbox.bounds, event.position);
705 let position = point_for_position.previous_valid;
706
707 editor.select(
708 SelectPhase::Begin {
709 position,
710 add: false,
711 click_count: 1,
712 },
713 cx,
714 );
715 editor.insert(&text, cx);
716 }
717 cx.stop_propagation()
718 }
719 }
720 }
721
722 fn mouse_dragged(
723 editor: &mut Editor,
724 event: &MouseMoveEvent,
725 position_map: &PositionMap,
726 text_bounds: Bounds<Pixels>,
727 cx: &mut ViewContext<Editor>,
728 ) {
729 if !editor.has_pending_selection() {
730 return;
731 }
732
733 let point_for_position = position_map.point_for_position(text_bounds, event.position);
734 let mut scroll_delta = gpui::Point::<f32>::default();
735 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
736 let top = text_bounds.origin.y + vertical_margin;
737 let bottom = text_bounds.bottom_left().y - vertical_margin;
738 if event.position.y < top {
739 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
740 }
741 if event.position.y > bottom {
742 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
743 }
744
745 // We need horizontal width of text
746 let style = editor.style.clone().unwrap_or_default();
747 let font_id = cx.text_system().resolve_font(&style.text.font());
748 let font_size = style.text.font_size.to_pixels(cx.rem_size());
749 let em_width = cx
750 .text_system()
751 .typographic_bounds(font_id, font_size, 'm')
752 .unwrap()
753 .size
754 .width;
755
756 let scroll_margin_x = EditorSettings::get_global(cx).horizontal_scroll_margin;
757
758 let scroll_space: Pixels = scroll_margin_x * em_width;
759
760 let left = text_bounds.origin.x + scroll_space;
761 let right = text_bounds.top_right().x - scroll_space;
762
763 if event.position.x < left {
764 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
765 }
766 if event.position.x > right {
767 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
768 }
769
770 editor.select(
771 SelectPhase::Update {
772 position: point_for_position.previous_valid,
773 goal_column: point_for_position.exact_unclipped.column(),
774 scroll_delta,
775 },
776 cx,
777 );
778 }
779
780 fn mouse_moved(
781 editor: &mut Editor,
782 event: &MouseMoveEvent,
783 position_map: &PositionMap,
784 text_hitbox: &Hitbox,
785 gutter_hitbox: &Hitbox,
786 cx: &mut ViewContext<Editor>,
787 ) {
788 let modifiers = event.modifiers;
789 let gutter_hovered = gutter_hitbox.is_hovered(cx);
790 editor.set_gutter_hovered(gutter_hovered, cx);
791
792 // Don't trigger hover popover if mouse is hovering over context menu
793 if text_hitbox.is_hovered(cx) {
794 let point_for_position =
795 position_map.point_for_position(text_hitbox.bounds, event.position);
796
797 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
798
799 if let Some(point) = point_for_position.as_valid() {
800 let anchor = position_map
801 .snapshot
802 .buffer_snapshot
803 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
804 hover_at(editor, Some(anchor), cx);
805 Self::update_visible_cursor(editor, point, position_map, cx);
806 } else {
807 hover_at(editor, None, cx);
808 }
809 } else {
810 editor.hide_hovered_link(cx);
811 hover_at(editor, None, cx);
812 if gutter_hovered {
813 cx.stop_propagation();
814 }
815 }
816 }
817
818 fn update_visible_cursor(
819 editor: &mut Editor,
820 point: DisplayPoint,
821 position_map: &PositionMap,
822 cx: &mut ViewContext<Editor>,
823 ) {
824 let snapshot = &position_map.snapshot;
825 let Some(hub) = editor.collaboration_hub() else {
826 return;
827 };
828 let start = snapshot.display_snapshot.clip_point(
829 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
830 Bias::Left,
831 );
832 let end = snapshot.display_snapshot.clip_point(
833 DisplayPoint::new(
834 point.row(),
835 (point.column() + 1).min(snapshot.line_len(point.row())),
836 ),
837 Bias::Right,
838 );
839
840 let range = snapshot
841 .buffer_snapshot
842 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
843 ..snapshot
844 .buffer_snapshot
845 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
846
847 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
848 return;
849 };
850 let key = crate::HoveredCursor {
851 replica_id: selection.replica_id,
852 selection_id: selection.selection.id,
853 };
854 editor.hovered_cursors.insert(
855 key.clone(),
856 cx.spawn(|editor, mut cx| async move {
857 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
858 editor
859 .update(&mut cx, |editor, cx| {
860 editor.hovered_cursors.remove(&key);
861 cx.notify();
862 })
863 .ok();
864 }),
865 );
866 cx.notify()
867 }
868
869 #[allow(clippy::too_many_arguments)]
870 fn layout_selections(
871 &self,
872 start_anchor: Anchor,
873 end_anchor: Anchor,
874 local_selections: &[Selection<Point>],
875 snapshot: &EditorSnapshot,
876 start_row: DisplayRow,
877 end_row: DisplayRow,
878 cx: &mut WindowContext,
879 ) -> (
880 Vec<(PlayerColor, Vec<SelectionLayout>)>,
881 BTreeMap<DisplayRow, bool>,
882 Option<DisplayPoint>,
883 ) {
884 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
885 let mut active_rows = BTreeMap::new();
886 let mut newest_selection_head = None;
887 self.editor.update(cx, |editor, cx| {
888 if editor.show_local_selections {
889 let mut layouts = Vec::new();
890 let newest = editor.selections.newest(cx);
891 for selection in local_selections.iter().cloned() {
892 let is_empty = selection.start == selection.end;
893 let is_newest = selection == newest;
894
895 let layout = SelectionLayout::new(
896 selection,
897 editor.selections.line_mode,
898 editor.cursor_shape,
899 &snapshot.display_snapshot,
900 is_newest,
901 editor.leader_peer_id.is_none(),
902 None,
903 );
904 if is_newest {
905 newest_selection_head = Some(layout.head);
906 }
907
908 for row in cmp::max(layout.active_rows.start.0, start_row.0)
909 ..=cmp::min(layout.active_rows.end.0, end_row.0)
910 {
911 let contains_non_empty_selection =
912 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
913 *contains_non_empty_selection |= !is_empty;
914 }
915 layouts.push(layout);
916 }
917
918 let player = if editor.read_only(cx) {
919 cx.theme().players().read_only()
920 } else {
921 self.style.local_player
922 };
923
924 selections.push((player, layouts));
925 }
926
927 if let Some(collaboration_hub) = &editor.collaboration_hub {
928 // When following someone, render the local selections in their color.
929 if let Some(leader_id) = editor.leader_peer_id {
930 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id)
931 {
932 if let Some(participant_index) = collaboration_hub
933 .user_participant_indices(cx)
934 .get(&collaborator.user_id)
935 {
936 if let Some((local_selection_style, _)) = selections.first_mut() {
937 *local_selection_style = cx
938 .theme()
939 .players()
940 .color_for_participant(participant_index.0);
941 }
942 }
943 }
944 }
945
946 let mut remote_selections = HashMap::default();
947 for selection in snapshot.remote_selections_in_range(
948 &(start_anchor..end_anchor),
949 collaboration_hub.as_ref(),
950 cx,
951 ) {
952 let selection_style =
953 Self::get_participant_color(selection.participant_index, cx);
954
955 // Don't re-render the leader's selections, since the local selections
956 // match theirs.
957 if Some(selection.peer_id) == editor.leader_peer_id {
958 continue;
959 }
960 let key = HoveredCursor {
961 replica_id: selection.replica_id,
962 selection_id: selection.selection.id,
963 };
964
965 let is_shown =
966 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
967
968 remote_selections
969 .entry(selection.replica_id)
970 .or_insert((selection_style, Vec::new()))
971 .1
972 .push(SelectionLayout::new(
973 selection.selection,
974 selection.line_mode,
975 selection.cursor_shape,
976 &snapshot.display_snapshot,
977 false,
978 false,
979 if is_shown { selection.user_name } else { None },
980 ));
981 }
982
983 selections.extend(remote_selections.into_values());
984 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
985 let player = if editor.read_only(cx) {
986 cx.theme().players().read_only()
987 } else {
988 self.style.local_player
989 };
990 let layouts = snapshot
991 .buffer_snapshot
992 .selections_in_range(&(start_anchor..end_anchor), true)
993 .map(move |(_, line_mode, cursor_shape, selection)| {
994 SelectionLayout::new(
995 selection,
996 line_mode,
997 cursor_shape,
998 &snapshot.display_snapshot,
999 false,
1000 false,
1001 None,
1002 )
1003 })
1004 .collect::<Vec<_>>();
1005 selections.push((player, layouts));
1006 }
1007 });
1008 (selections, active_rows, newest_selection_head)
1009 }
1010
1011 fn collect_cursors(
1012 &self,
1013 snapshot: &EditorSnapshot,
1014 cx: &mut WindowContext,
1015 ) -> Vec<(DisplayPoint, Hsla)> {
1016 let editor = self.editor.read(cx);
1017 let mut cursors = Vec::new();
1018 let mut skip_local = false;
1019 let mut add_cursor = |anchor: Anchor, color| {
1020 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
1021 };
1022 // Remote cursors
1023 if let Some(collaboration_hub) = &editor.collaboration_hub {
1024 for remote_selection in snapshot.remote_selections_in_range(
1025 &(Anchor::min()..Anchor::max()),
1026 collaboration_hub.deref(),
1027 cx,
1028 ) {
1029 let color = Self::get_participant_color(remote_selection.participant_index, cx);
1030 add_cursor(remote_selection.selection.head(), color.cursor);
1031 if Some(remote_selection.peer_id) == editor.leader_peer_id {
1032 skip_local = true;
1033 }
1034 }
1035 }
1036 // Local cursors
1037 if !skip_local {
1038 let color = cx.theme().players().local().cursor;
1039 editor.selections.disjoint.iter().for_each(|selection| {
1040 add_cursor(selection.head(), color);
1041 });
1042 if let Some(ref selection) = editor.selections.pending_anchor() {
1043 add_cursor(selection.head(), color);
1044 }
1045 }
1046 cursors
1047 }
1048
1049 #[allow(clippy::too_many_arguments)]
1050 fn layout_visible_cursors(
1051 &self,
1052 snapshot: &EditorSnapshot,
1053 selections: &[(PlayerColor, Vec<SelectionLayout>)],
1054 block_start_rows: &HashSet<DisplayRow>,
1055 visible_display_row_range: Range<DisplayRow>,
1056 line_layouts: &[LineWithInvisibles],
1057 text_hitbox: &Hitbox,
1058 content_origin: gpui::Point<Pixels>,
1059 scroll_position: gpui::Point<f32>,
1060 scroll_pixel_position: gpui::Point<Pixels>,
1061 line_height: Pixels,
1062 em_width: Pixels,
1063 em_advance: Pixels,
1064 autoscroll_containing_element: bool,
1065 cx: &mut WindowContext,
1066 ) -> Vec<CursorLayout> {
1067 let mut autoscroll_bounds = None;
1068 let cursor_layouts = self.editor.update(cx, |editor, cx| {
1069 let mut cursors = Vec::new();
1070 for (player_color, selections) in selections {
1071 for selection in selections {
1072 let cursor_position = selection.head;
1073
1074 let in_range = visible_display_row_range.contains(&cursor_position.row());
1075 if (selection.is_local && !editor.show_local_cursors(cx))
1076 || !in_range
1077 || block_start_rows.contains(&cursor_position.row())
1078 {
1079 continue;
1080 }
1081
1082 let cursor_row_layout = &line_layouts
1083 [cursor_position.row().minus(visible_display_row_range.start) as usize];
1084 let cursor_column = cursor_position.column() as usize;
1085
1086 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1087 let mut block_width =
1088 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1089 if block_width == Pixels::ZERO {
1090 block_width = em_advance;
1091 }
1092 let block_text = if let CursorShape::Block = selection.cursor_shape {
1093 snapshot
1094 .grapheme_at(cursor_position)
1095 .or_else(|| {
1096 if cursor_column == 0 {
1097 snapshot.placeholder_text().and_then(|s| {
1098 s.graphemes(true).next().map(|s| s.to_string().into())
1099 })
1100 } else {
1101 None
1102 }
1103 })
1104 .and_then(|text| {
1105 let len = text.len();
1106
1107 let font = cursor_row_layout
1108 .font_id_for_index(cursor_column)
1109 .and_then(|cursor_font_id| {
1110 cx.text_system().get_font_for_id(cursor_font_id)
1111 })
1112 .unwrap_or(self.style.text.font());
1113
1114 // Invert the text color for the block cursor. Ensure that the text
1115 // color is opaque enough to be visible against the background color.
1116 //
1117 // 0.75 is an arbitrary threshold to determine if the background color is
1118 // opaque enough to use as a text color.
1119 //
1120 // TODO: In the future we should ensure themes have a `text_inverse` color.
1121 let color = if cx.theme().colors().editor_background.a < 0.75 {
1122 match cx.theme().appearance {
1123 Appearance::Dark => Hsla::black(),
1124 Appearance::Light => Hsla::white(),
1125 }
1126 } else {
1127 cx.theme().colors().editor_background
1128 };
1129
1130 cx.text_system()
1131 .shape_line(
1132 text,
1133 cursor_row_layout.font_size,
1134 &[TextRun {
1135 len,
1136 font,
1137 color,
1138 background_color: None,
1139 strikethrough: None,
1140 underline: None,
1141 }],
1142 )
1143 .log_err()
1144 })
1145 } else {
1146 None
1147 };
1148
1149 let x = cursor_character_x - scroll_pixel_position.x;
1150 let y = (cursor_position.row().as_f32()
1151 - scroll_pixel_position.y / line_height)
1152 * line_height;
1153 if selection.is_newest {
1154 editor.pixel_position_of_newest_cursor = Some(point(
1155 text_hitbox.origin.x + x + block_width / 2.,
1156 text_hitbox.origin.y + y + line_height / 2.,
1157 ));
1158
1159 if autoscroll_containing_element {
1160 let top = text_hitbox.origin.y
1161 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1162 * line_height;
1163 let left = text_hitbox.origin.x
1164 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1165 .max(0.)
1166 * em_width;
1167
1168 let bottom = text_hitbox.origin.y
1169 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1170 * line_height;
1171 let right = text_hitbox.origin.x
1172 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1173 * em_width;
1174
1175 autoscroll_bounds =
1176 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1177 }
1178 }
1179
1180 let mut cursor = CursorLayout {
1181 color: player_color.cursor,
1182 block_width,
1183 origin: point(x, y),
1184 line_height,
1185 shape: selection.cursor_shape,
1186 block_text,
1187 cursor_name: None,
1188 };
1189 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1190 string: name,
1191 color: self.style.background,
1192 is_top_row: cursor_position.row().0 == 0,
1193 });
1194 cursor.layout(content_origin, cursor_name, cx);
1195 cursors.push(cursor);
1196 }
1197 }
1198 cursors
1199 });
1200
1201 if let Some(bounds) = autoscroll_bounds {
1202 cx.request_autoscroll(bounds);
1203 }
1204
1205 cursor_layouts
1206 }
1207
1208 fn layout_scrollbars(
1209 &self,
1210 snapshot: &EditorSnapshot,
1211 scrollbar_range_data: ScrollbarRangeData,
1212 scroll_position: gpui::Point<f32>,
1213 non_visible_cursors: bool,
1214 cx: &mut WindowContext,
1215 ) -> AxisPair<Option<ScrollbarLayout>> {
1216 let letter_size = scrollbar_range_data.letter_size;
1217 let text_units_per_page = axis_pair(
1218 scrollbar_range_data.scrollbar_bounds.size.width / letter_size.width,
1219 scrollbar_range_data.scrollbar_bounds.size.height / letter_size.height,
1220 );
1221
1222 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1223 let show_scrollbars = self.editor.read(cx).show_scrollbars
1224 && match scrollbar_settings.show {
1225 ShowScrollbar::Auto => {
1226 let editor = self.editor.read(cx);
1227 let is_singleton = editor.is_singleton(cx);
1228 // Git
1229 (is_singleton && scrollbar_settings.git_diff && !snapshot.diff_map.is_empty())
1230 ||
1231 // Buffer Search Results
1232 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1233 ||
1234 // Selected Symbol Occurrences
1235 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1236 ||
1237 // Diagnostics
1238 (is_singleton && scrollbar_settings.diagnostics != ScrollbarDiagnostics::None && snapshot.buffer_snapshot.has_diagnostics())
1239 ||
1240 // Cursors out of sight
1241 non_visible_cursors
1242 ||
1243 // Scrollmanager
1244 editor.scroll_manager.scrollbars_visible()
1245 }
1246 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1247 ShowScrollbar::Always => true,
1248 ShowScrollbar::Never => false,
1249 };
1250
1251 let axes: AxisPair<bool> = scrollbar_settings.axes.into();
1252
1253 if snapshot.mode != EditorMode::Full {
1254 return axis_pair(None, None);
1255 }
1256
1257 let visible_range = axis_pair(
1258 axes.horizontal
1259 .then(|| scroll_position.x..scroll_position.x + text_units_per_page.horizontal),
1260 axes.vertical
1261 .then(|| scroll_position.y..scroll_position.y + text_units_per_page.vertical),
1262 );
1263
1264 // If a drag took place after we started dragging the scrollbar,
1265 // cancel the scrollbar drag.
1266 if cx.has_active_drag() {
1267 self.editor.update(cx, |editor, cx| {
1268 editor
1269 .scroll_manager
1270 .set_is_dragging_scrollbar(Axis::Horizontal, false, cx);
1271 editor
1272 .scroll_manager
1273 .set_is_dragging_scrollbar(Axis::Vertical, false, cx);
1274 });
1275 }
1276
1277 let text_bounds = scrollbar_range_data.scrollbar_bounds;
1278
1279 let track_bounds = axis_pair(
1280 axes.horizontal.then(|| {
1281 Bounds::from_corners(
1282 point(
1283 text_bounds.bottom_left().x,
1284 text_bounds.bottom_left().y - self.style.scrollbar_width,
1285 ),
1286 point(
1287 text_bounds.bottom_right().x
1288 - if axes.vertical {
1289 self.style.scrollbar_width
1290 } else {
1291 px(0.)
1292 },
1293 text_bounds.bottom_right().y,
1294 ),
1295 )
1296 }),
1297 axes.vertical.then(|| {
1298 Bounds::from_corners(
1299 point(self.scrollbar_left(&text_bounds), text_bounds.origin.y),
1300 text_bounds.bottom_right(),
1301 )
1302 }),
1303 );
1304
1305 let scroll_range_size = scrollbar_range_data.scroll_range.size;
1306 let total_text_units = axis_pair(
1307 Some(scroll_range_size.width / letter_size.width),
1308 Some(scroll_range_size.height / letter_size.height),
1309 );
1310
1311 let thumb_size = axis_pair(
1312 total_text_units
1313 .horizontal
1314 .zip(track_bounds.horizontal)
1315 .map(|(total_text_units_x, track_bounds_x)| {
1316 let thumb_percent =
1317 (text_units_per_page.horizontal / total_text_units_x).min(1.);
1318
1319 track_bounds_x.size.width * thumb_percent
1320 }),
1321 total_text_units.vertical.zip(track_bounds.vertical).map(
1322 |(total_text_units_y, track_bounds_y)| {
1323 let thumb_percent = (text_units_per_page.vertical / total_text_units_y).min(1.);
1324
1325 track_bounds_y.size.height * thumb_percent
1326 },
1327 ),
1328 );
1329
1330 // NOTE: Space not taken by track bounds divided by text units not on screen
1331 let text_unit_size = axis_pair(
1332 thumb_size
1333 .horizontal
1334 .zip(track_bounds.horizontal)
1335 .zip(total_text_units.horizontal)
1336 .map(|((thumb_size, track_bounds), total_text_units)| {
1337 (track_bounds.size.width - thumb_size)
1338 / (total_text_units - text_units_per_page.horizontal).max(0.)
1339 }),
1340 thumb_size
1341 .vertical
1342 .zip(track_bounds.vertical)
1343 .zip(total_text_units.vertical)
1344 .map(|((thumb_size, track_bounds), total_text_units)| {
1345 (track_bounds.size.height - thumb_size)
1346 / (total_text_units - text_units_per_page.vertical).max(0.)
1347 }),
1348 );
1349
1350 let horizontal_scrollbar = track_bounds
1351 .horizontal
1352 .zip(visible_range.horizontal)
1353 .zip(text_unit_size.horizontal)
1354 .zip(thumb_size.horizontal)
1355 .map(
1356 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1357 hitbox: cx.insert_hitbox(track_bounds, false),
1358 visible_range,
1359 text_unit_size,
1360 visible: show_scrollbars,
1361 thumb_size,
1362 axis: Axis::Horizontal,
1363 },
1364 );
1365
1366 let vertical_scrollbar = track_bounds
1367 .vertical
1368 .zip(visible_range.vertical)
1369 .zip(text_unit_size.vertical)
1370 .zip(thumb_size.vertical)
1371 .map(
1372 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1373 hitbox: cx.insert_hitbox(track_bounds, false),
1374 visible_range,
1375 text_unit_size,
1376 visible: show_scrollbars,
1377 thumb_size,
1378 axis: Axis::Vertical,
1379 },
1380 );
1381
1382 axis_pair(horizontal_scrollbar, vertical_scrollbar)
1383 }
1384
1385 #[allow(clippy::too_many_arguments)]
1386 fn prepaint_crease_toggles(
1387 &self,
1388 crease_toggles: &mut [Option<AnyElement>],
1389 line_height: Pixels,
1390 gutter_dimensions: &GutterDimensions,
1391 gutter_settings: crate::editor_settings::Gutter,
1392 scroll_pixel_position: gpui::Point<Pixels>,
1393 gutter_hitbox: &Hitbox,
1394 cx: &mut WindowContext,
1395 ) {
1396 for (ix, crease_toggle) in crease_toggles.iter_mut().enumerate() {
1397 if let Some(crease_toggle) = crease_toggle {
1398 debug_assert!(gutter_settings.folds);
1399 let available_space = size(
1400 AvailableSpace::MinContent,
1401 AvailableSpace::Definite(line_height * 0.55),
1402 );
1403 let crease_toggle_size = crease_toggle.layout_as_root(available_space, cx);
1404
1405 let position = point(
1406 gutter_dimensions.width - gutter_dimensions.right_padding,
1407 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1408 );
1409 let centering_offset = point(
1410 (gutter_dimensions.fold_area_width() - crease_toggle_size.width) / 2.,
1411 (line_height - crease_toggle_size.height) / 2.,
1412 );
1413 let origin = gutter_hitbox.origin + position + centering_offset;
1414 crease_toggle.prepaint_as_root(origin, available_space, cx);
1415 }
1416 }
1417 }
1418
1419 #[allow(clippy::too_many_arguments)]
1420 fn prepaint_crease_trailers(
1421 &self,
1422 trailers: Vec<Option<AnyElement>>,
1423 lines: &[LineWithInvisibles],
1424 line_height: Pixels,
1425 content_origin: gpui::Point<Pixels>,
1426 scroll_pixel_position: gpui::Point<Pixels>,
1427 em_width: Pixels,
1428 cx: &mut WindowContext,
1429 ) -> Vec<Option<CreaseTrailerLayout>> {
1430 trailers
1431 .into_iter()
1432 .enumerate()
1433 .map(|(ix, element)| {
1434 let mut element = element?;
1435 let available_space = size(
1436 AvailableSpace::MinContent,
1437 AvailableSpace::Definite(line_height),
1438 );
1439 let size = element.layout_as_root(available_space, cx);
1440
1441 let line = &lines[ix];
1442 let padding = if line.width == Pixels::ZERO {
1443 Pixels::ZERO
1444 } else {
1445 4. * em_width
1446 };
1447 let position = point(
1448 scroll_pixel_position.x + line.width + padding,
1449 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1450 );
1451 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1452 let origin = content_origin + position + centering_offset;
1453 element.prepaint_as_root(origin, available_space, cx);
1454 Some(CreaseTrailerLayout {
1455 element,
1456 bounds: Bounds::new(origin, size),
1457 })
1458 })
1459 .collect()
1460 }
1461
1462 // Folds contained in a hunk are ignored apart from shrinking visual size
1463 // If a fold contains any hunks then that fold line is marked as modified
1464 fn layout_gutter_git_hunks(
1465 &self,
1466 line_height: Pixels,
1467 gutter_hitbox: &Hitbox,
1468 display_rows: Range<DisplayRow>,
1469 anchor_range: Range<Anchor>,
1470 snapshot: &EditorSnapshot,
1471 cx: &mut WindowContext,
1472 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1473 let buffer_snapshot = &snapshot.buffer_snapshot;
1474 let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(snapshot);
1475 let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(snapshot);
1476
1477 let git_gutter_setting = ProjectSettings::get_global(cx)
1478 .git
1479 .git_gutter
1480 .unwrap_or_default();
1481
1482 self.editor.update(cx, |editor, cx| {
1483 let expanded_hunks = &editor.diff_map.hunks;
1484 let expanded_hunks_start_ix = expanded_hunks
1485 .binary_search_by(|hunk| {
1486 hunk.hunk_range
1487 .end
1488 .cmp(&anchor_range.start, &buffer_snapshot)
1489 .then(Ordering::Less)
1490 })
1491 .unwrap_err();
1492 let mut expanded_hunks = expanded_hunks[expanded_hunks_start_ix..].iter().peekable();
1493
1494 let mut display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)> = editor
1495 .diff_map
1496 .snapshot
1497 .diff_hunks_in_range(buffer_start..buffer_end, &buffer_snapshot)
1498 .filter_map(|hunk| {
1499 let display_hunk = diff_hunk_to_display(&hunk, snapshot);
1500
1501 if let DisplayDiffHunk::Unfolded {
1502 multi_buffer_range,
1503 status,
1504 ..
1505 } = &display_hunk
1506 {
1507 let mut is_expanded = false;
1508 while let Some(expanded_hunk) = expanded_hunks.peek() {
1509 match expanded_hunk
1510 .hunk_range
1511 .start
1512 .cmp(&multi_buffer_range.start, &buffer_snapshot)
1513 {
1514 Ordering::Less => {
1515 expanded_hunks.next();
1516 }
1517 Ordering::Equal => {
1518 is_expanded = true;
1519 break;
1520 }
1521 Ordering::Greater => {
1522 break;
1523 }
1524 }
1525 }
1526 match status {
1527 DiffHunkStatus::Added => {}
1528 DiffHunkStatus::Modified => {}
1529 DiffHunkStatus::Removed => {
1530 if is_expanded {
1531 return None;
1532 }
1533 }
1534 }
1535 }
1536
1537 Some(display_hunk)
1538 })
1539 .dedup()
1540 .map(|hunk| (hunk, None))
1541 .collect();
1542
1543 if let GitGutterSetting::TrackedFiles = git_gutter_setting {
1544 for (hunk, hitbox) in &mut display_hunks {
1545 if let DisplayDiffHunk::Unfolded { .. } = hunk {
1546 let hunk_bounds = Self::diff_hunk_bounds(
1547 snapshot,
1548 line_height,
1549 gutter_hitbox.bounds,
1550 &hunk,
1551 );
1552 *hitbox = Some(cx.insert_hitbox(hunk_bounds, true));
1553 };
1554 }
1555 }
1556
1557 display_hunks
1558 })
1559 }
1560
1561 #[allow(clippy::too_many_arguments)]
1562 fn layout_inline_blame(
1563 &self,
1564 display_row: DisplayRow,
1565 display_snapshot: &DisplaySnapshot,
1566 line_layout: &LineWithInvisibles,
1567 crease_trailer: Option<&CreaseTrailerLayout>,
1568 em_width: Pixels,
1569 content_origin: gpui::Point<Pixels>,
1570 scroll_pixel_position: gpui::Point<Pixels>,
1571 line_height: Pixels,
1572 cx: &mut WindowContext,
1573 ) -> Option<AnyElement> {
1574 if !self
1575 .editor
1576 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1577 {
1578 return None;
1579 }
1580
1581 let workspace = self
1582 .editor
1583 .read(cx)
1584 .workspace
1585 .as_ref()
1586 .map(|(w, _)| w.clone());
1587
1588 let display_point = DisplayPoint::new(display_row, 0);
1589 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1590
1591 let blame = self.editor.read(cx).blame.clone()?;
1592 let blame_entry = blame
1593 .update(cx, |blame, cx| {
1594 blame.blame_for_rows([Some(buffer_row)], cx).next()
1595 })
1596 .flatten()?;
1597
1598 let mut element =
1599 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1600
1601 let start_y = content_origin.y
1602 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1603
1604 let start_x = {
1605 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1606
1607 let line_end = if let Some(crease_trailer) = crease_trailer {
1608 crease_trailer.bounds.right()
1609 } else {
1610 content_origin.x - scroll_pixel_position.x + line_layout.width
1611 };
1612 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1613
1614 let min_column_in_pixels = ProjectSettings::get_global(cx)
1615 .git
1616 .inline_blame
1617 .and_then(|settings| settings.min_column)
1618 .map(|col| self.column_pixels(col as usize, cx))
1619 .unwrap_or(px(0.));
1620 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1621
1622 cmp::max(padded_line_end, min_start)
1623 };
1624
1625 let absolute_offset = point(start_x, start_y);
1626 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1627
1628 Some(element)
1629 }
1630
1631 #[allow(clippy::too_many_arguments)]
1632 fn layout_blame_entries(
1633 &self,
1634 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1635 em_width: Pixels,
1636 scroll_position: gpui::Point<f32>,
1637 line_height: Pixels,
1638 gutter_hitbox: &Hitbox,
1639 max_width: Option<Pixels>,
1640 cx: &mut WindowContext,
1641 ) -> Option<Vec<AnyElement>> {
1642 if !self
1643 .editor
1644 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1645 {
1646 return None;
1647 }
1648
1649 let blame = self.editor.read(cx).blame.clone()?;
1650 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1651 blame.blame_for_rows(buffer_rows, cx).collect()
1652 });
1653
1654 let width = if let Some(max_width) = max_width {
1655 AvailableSpace::Definite(max_width)
1656 } else {
1657 AvailableSpace::MaxContent
1658 };
1659 let scroll_top = scroll_position.y * line_height;
1660 let start_x = em_width;
1661
1662 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1663
1664 let shaped_lines = blamed_rows
1665 .into_iter()
1666 .enumerate()
1667 .flat_map(|(ix, blame_entry)| {
1668 if let Some(blame_entry) = blame_entry {
1669 let mut element = render_blame_entry(
1670 ix,
1671 &blame,
1672 blame_entry,
1673 &self.style,
1674 &mut last_used_color,
1675 self.editor.clone(),
1676 cx,
1677 );
1678
1679 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1680 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1681
1682 element.prepaint_as_root(
1683 absolute_offset,
1684 size(width, AvailableSpace::MinContent),
1685 cx,
1686 );
1687
1688 Some(element)
1689 } else {
1690 None
1691 }
1692 })
1693 .collect();
1694
1695 Some(shaped_lines)
1696 }
1697
1698 #[allow(clippy::too_many_arguments)]
1699 fn layout_indent_guides(
1700 &self,
1701 content_origin: gpui::Point<Pixels>,
1702 text_origin: gpui::Point<Pixels>,
1703 visible_buffer_range: Range<MultiBufferRow>,
1704 scroll_pixel_position: gpui::Point<Pixels>,
1705 line_height: Pixels,
1706 snapshot: &DisplaySnapshot,
1707 cx: &mut WindowContext,
1708 ) -> Option<Vec<IndentGuideLayout>> {
1709 let indent_guides = self.editor.update(cx, |editor, cx| {
1710 editor.indent_guides(visible_buffer_range, snapshot, cx)
1711 })?;
1712
1713 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1714 editor
1715 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1716 .unwrap_or_default()
1717 });
1718
1719 Some(
1720 indent_guides
1721 .into_iter()
1722 .enumerate()
1723 .filter_map(|(i, indent_guide)| {
1724 let single_indent_width =
1725 self.column_pixels(indent_guide.tab_size as usize, cx);
1726 let total_width = single_indent_width * indent_guide.depth as f32;
1727 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1728 if start_x >= text_origin.x {
1729 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1730 indent_guide.multibuffer_row_range.clone(),
1731 line_height,
1732 snapshot,
1733 );
1734
1735 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1736
1737 Some(IndentGuideLayout {
1738 origin: point(start_x, start_y),
1739 length,
1740 single_indent_width,
1741 depth: indent_guide.depth,
1742 active: active_indent_guide_indices.contains(&i),
1743 settings: indent_guide.settings,
1744 })
1745 } else {
1746 None
1747 }
1748 })
1749 .collect(),
1750 )
1751 }
1752
1753 fn calculate_indent_guide_bounds(
1754 row_range: Range<MultiBufferRow>,
1755 line_height: Pixels,
1756 snapshot: &DisplaySnapshot,
1757 ) -> (gpui::Pixels, gpui::Pixels) {
1758 let start_point = Point::new(row_range.start.0, 0);
1759 let end_point = Point::new(row_range.end.0, 0);
1760
1761 let row_range = start_point.to_display_point(snapshot).row()
1762 ..end_point.to_display_point(snapshot).row();
1763
1764 let mut prev_line = start_point;
1765 prev_line.row = prev_line.row.saturating_sub(1);
1766 let prev_line = prev_line.to_display_point(snapshot).row();
1767
1768 let mut cons_line = end_point;
1769 cons_line.row += 1;
1770 let cons_line = cons_line.to_display_point(snapshot).row();
1771
1772 let mut offset_y = row_range.start.0 as f32 * line_height;
1773 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1774
1775 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1776 if row_range.end == cons_line {
1777 length += line_height;
1778 }
1779
1780 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1781 // we want to extend the indent guide to the start of the block.
1782 let mut block_height = 0;
1783 let mut block_offset = 0;
1784 let mut found_excerpt_header = false;
1785 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1786 if matches!(block, Block::ExcerptBoundary { .. }) {
1787 found_excerpt_header = true;
1788 break;
1789 }
1790 block_offset += block.height();
1791 block_height += block.height();
1792 }
1793 if !found_excerpt_header {
1794 offset_y -= block_offset as f32 * line_height;
1795 length += block_height as f32 * line_height;
1796 }
1797
1798 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1799 // we want to ensure that the indent guide stops before the excerpt header.
1800 let mut block_height = 0;
1801 let mut found_excerpt_header = false;
1802 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1803 if matches!(block, Block::ExcerptBoundary { .. }) {
1804 found_excerpt_header = true;
1805 }
1806 block_height += block.height();
1807 }
1808 if found_excerpt_header {
1809 length -= block_height as f32 * line_height;
1810 }
1811
1812 (offset_y, length)
1813 }
1814
1815 #[allow(clippy::too_many_arguments)]
1816 fn layout_run_indicators(
1817 &self,
1818 line_height: Pixels,
1819 range: Range<DisplayRow>,
1820 scroll_pixel_position: gpui::Point<Pixels>,
1821 gutter_dimensions: &GutterDimensions,
1822 gutter_hitbox: &Hitbox,
1823 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1824 snapshot: &EditorSnapshot,
1825 cx: &mut WindowContext,
1826 ) -> Vec<AnyElement> {
1827 self.editor.update(cx, |editor, cx| {
1828 let active_task_indicator_row =
1829 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1830 deployed_from_indicator,
1831 actions,
1832 ..
1833 })) = editor.context_menu.borrow().as_ref()
1834 {
1835 actions
1836 .tasks
1837 .as_ref()
1838 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1839 .or(*deployed_from_indicator)
1840 } else {
1841 None
1842 };
1843
1844 let offset_range_start = snapshot
1845 .display_point_to_anchor(DisplayPoint::new(range.start, 0), Bias::Left)
1846 .to_offset(&snapshot.buffer_snapshot);
1847 let offset_range_end = snapshot
1848 .display_point_to_anchor(DisplayPoint::new(range.end, 0), Bias::Right)
1849 .to_offset(&snapshot.buffer_snapshot);
1850
1851 editor
1852 .tasks
1853 .iter()
1854 .filter_map(|(_, tasks)| {
1855 if tasks.offset.0 < offset_range_start || tasks.offset.0 >= offset_range_end {
1856 return None;
1857 }
1858 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1859 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1860 let buffer_folded = snapshot
1861 .buffer_snapshot
1862 .buffer_line_for_row(multibuffer_row)
1863 .map(|(buffer_snapshot, _)| buffer_snapshot.remote_id())
1864 .map(|buffer_id| editor.buffer_folded(buffer_id, cx))
1865 .unwrap_or(false);
1866 if buffer_folded {
1867 return None;
1868 }
1869
1870 if snapshot.is_line_folded(multibuffer_row) {
1871 // Skip folded indicators, unless it's the starting line of a fold.
1872 if multibuffer_row
1873 .0
1874 .checked_sub(1)
1875 .map_or(false, |previous_row| {
1876 snapshot.is_line_folded(MultiBufferRow(previous_row))
1877 })
1878 {
1879 return None;
1880 }
1881 }
1882 let display_row = multibuffer_point.to_display_point(snapshot).row();
1883 let button = editor.render_run_indicator(
1884 &self.style,
1885 Some(display_row) == active_task_indicator_row,
1886 display_row,
1887 cx,
1888 );
1889
1890 let button = prepaint_gutter_button(
1891 button,
1892 display_row,
1893 line_height,
1894 gutter_dimensions,
1895 scroll_pixel_position,
1896 gutter_hitbox,
1897 rows_with_hunk_bounds,
1898 cx,
1899 );
1900 Some(button)
1901 })
1902 .collect_vec()
1903 })
1904 }
1905
1906 #[allow(clippy::too_many_arguments)]
1907 fn layout_code_actions_indicator(
1908 &self,
1909 line_height: Pixels,
1910 newest_selection_head: DisplayPoint,
1911 scroll_pixel_position: gpui::Point<Pixels>,
1912 gutter_dimensions: &GutterDimensions,
1913 gutter_hitbox: &Hitbox,
1914 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1915 cx: &mut WindowContext,
1916 ) -> Option<AnyElement> {
1917 let mut active = false;
1918 let mut button = None;
1919 let row = newest_selection_head.row();
1920 self.editor.update(cx, |editor, cx| {
1921 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1922 deployed_from_indicator,
1923 ..
1924 })) = editor.context_menu.borrow().as_ref()
1925 {
1926 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1927 };
1928 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1929 });
1930
1931 let button = prepaint_gutter_button(
1932 button?,
1933 row,
1934 line_height,
1935 gutter_dimensions,
1936 scroll_pixel_position,
1937 gutter_hitbox,
1938 rows_with_hunk_bounds,
1939 cx,
1940 );
1941
1942 Some(button)
1943 }
1944
1945 fn get_participant_color(
1946 participant_index: Option<ParticipantIndex>,
1947 cx: &WindowContext,
1948 ) -> PlayerColor {
1949 if let Some(index) = participant_index {
1950 cx.theme().players().color_for_participant(index.0)
1951 } else {
1952 cx.theme().players().absent()
1953 }
1954 }
1955
1956 fn calculate_relative_line_numbers(
1957 &self,
1958 snapshot: &EditorSnapshot,
1959 rows: &Range<DisplayRow>,
1960 relative_to: Option<DisplayRow>,
1961 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1962 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1963 let Some(relative_to) = relative_to else {
1964 return relative_rows;
1965 };
1966
1967 let start = rows.start.min(relative_to);
1968 let end = rows.end.max(relative_to);
1969
1970 let buffer_rows = snapshot
1971 .buffer_rows(start)
1972 .take(1 + end.minus(start) as usize)
1973 .collect::<Vec<_>>();
1974
1975 let head_idx = relative_to.minus(start);
1976 let mut delta = 1;
1977 let mut i = head_idx + 1;
1978 while i < buffer_rows.len() as u32 {
1979 if buffer_rows[i as usize].is_some() {
1980 if rows.contains(&DisplayRow(i + start.0)) {
1981 relative_rows.insert(DisplayRow(i + start.0), delta);
1982 }
1983 delta += 1;
1984 }
1985 i += 1;
1986 }
1987 delta = 1;
1988 i = head_idx.min(buffer_rows.len() as u32 - 1);
1989 while i > 0 && buffer_rows[i as usize].is_none() {
1990 i -= 1;
1991 }
1992
1993 while i > 0 {
1994 i -= 1;
1995 if buffer_rows[i as usize].is_some() {
1996 if rows.contains(&DisplayRow(i + start.0)) {
1997 relative_rows.insert(DisplayRow(i + start.0), delta);
1998 }
1999 delta += 1;
2000 }
2001 }
2002
2003 relative_rows
2004 }
2005
2006 #[allow(clippy::too_many_arguments)]
2007 fn layout_line_numbers(
2008 &self,
2009 gutter_hitbox: Option<&Hitbox>,
2010 gutter_dimensions: GutterDimensions,
2011 line_height: Pixels,
2012 scroll_position: gpui::Point<f32>,
2013 rows: Range<DisplayRow>,
2014 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
2015 active_rows: &BTreeMap<DisplayRow, bool>,
2016 newest_selection_head: Option<DisplayPoint>,
2017 snapshot: &EditorSnapshot,
2018 cx: &mut WindowContext,
2019 ) -> Arc<HashMap<MultiBufferRow, (ShapedLine, Option<Hitbox>)>> {
2020 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
2021 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
2022 });
2023 if !include_line_numbers {
2024 return Arc::default();
2025 }
2026
2027 let (newest_selection_head, is_relative) = self.editor.update(cx, |editor, cx| {
2028 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
2029 let newest = editor.selections.newest::<Point>(cx);
2030 SelectionLayout::new(
2031 newest,
2032 editor.selections.line_mode,
2033 editor.cursor_shape,
2034 &snapshot.display_snapshot,
2035 true,
2036 true,
2037 None,
2038 )
2039 .head
2040 });
2041 let is_relative = editor.should_use_relative_line_numbers(cx);
2042 (newest_selection_head, is_relative)
2043 });
2044
2045 let relative_to = if is_relative {
2046 Some(newest_selection_head.row())
2047 } else {
2048 None
2049 };
2050 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
2051 let mut line_number = String::new();
2052 let line_numbers = buffer_rows
2053 .into_iter()
2054 .enumerate()
2055 .flat_map(|(ix, buffer_row)| {
2056 let buffer_row = buffer_row?;
2057 let display_row = DisplayRow(rows.start.0 + ix as u32);
2058 let color = if active_rows.contains_key(&display_row) {
2059 cx.theme().colors().editor_active_line_number
2060 } else {
2061 cx.theme().colors().editor_line_number
2062 };
2063 line_number.clear();
2064 let default_number = buffer_row.0 + 1;
2065 let number = relative_rows
2066 .get(&DisplayRow(ix as u32 + rows.start.0))
2067 .unwrap_or(&default_number);
2068 write!(&mut line_number, "{number}").unwrap();
2069
2070 let shaped_line = self
2071 .shape_line_number(SharedString::from(&line_number), color, cx)
2072 .log_err()?;
2073 let scroll_top = scroll_position.y * line_height;
2074 let line_origin = gutter_hitbox.map(|hitbox| {
2075 hitbox.origin
2076 + point(
2077 hitbox.size.width - shaped_line.width - gutter_dimensions.right_padding,
2078 ix as f32 * line_height - (scroll_top % line_height),
2079 )
2080 });
2081
2082 #[cfg(not(test))]
2083 let hitbox = line_origin.map(|line_origin| {
2084 cx.insert_hitbox(
2085 Bounds::new(line_origin, size(shaped_line.width, line_height)),
2086 false,
2087 )
2088 });
2089 #[cfg(test)]
2090 let hitbox = {
2091 let _ = line_origin;
2092 None
2093 };
2094
2095 let multi_buffer_row = DisplayPoint::new(display_row, 0).to_point(snapshot).row;
2096 let multi_buffer_row = MultiBufferRow(multi_buffer_row);
2097 Some((multi_buffer_row, (shaped_line, hitbox)))
2098 })
2099 .collect();
2100 Arc::new(line_numbers)
2101 }
2102
2103 fn layout_crease_toggles(
2104 &self,
2105 rows: Range<DisplayRow>,
2106 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2107 active_rows: &BTreeMap<DisplayRow, bool>,
2108 snapshot: &EditorSnapshot,
2109 cx: &mut WindowContext,
2110 ) -> Vec<Option<AnyElement>> {
2111 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
2112 && snapshot.mode == EditorMode::Full
2113 && self.editor.read(cx).is_singleton(cx);
2114 if include_fold_statuses {
2115 buffer_rows
2116 .into_iter()
2117 .enumerate()
2118 .map(|(ix, row)| {
2119 if let Some(multibuffer_row) = row {
2120 let display_row = DisplayRow(rows.start.0 + ix as u32);
2121 let active = active_rows.contains_key(&display_row);
2122 snapshot.render_crease_toggle(
2123 multibuffer_row,
2124 active,
2125 self.editor.clone(),
2126 cx,
2127 )
2128 } else {
2129 None
2130 }
2131 })
2132 .collect()
2133 } else {
2134 Vec::new()
2135 }
2136 }
2137
2138 fn layout_crease_trailers(
2139 &self,
2140 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2141 snapshot: &EditorSnapshot,
2142 cx: &mut WindowContext,
2143 ) -> Vec<Option<AnyElement>> {
2144 buffer_rows
2145 .into_iter()
2146 .map(|row| {
2147 if let Some(multibuffer_row) = row {
2148 snapshot.render_crease_trailer(multibuffer_row, cx)
2149 } else {
2150 None
2151 }
2152 })
2153 .collect()
2154 }
2155
2156 fn layout_lines(
2157 rows: Range<DisplayRow>,
2158 snapshot: &EditorSnapshot,
2159 style: &EditorStyle,
2160 editor_width: Pixels,
2161 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2162 cx: &mut WindowContext,
2163 ) -> Vec<LineWithInvisibles> {
2164 if rows.start >= rows.end {
2165 return Vec::new();
2166 }
2167
2168 // Show the placeholder when the editor is empty
2169 if snapshot.is_empty() {
2170 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2171 let placeholder_color = cx.theme().colors().text_placeholder;
2172 let placeholder_text = snapshot.placeholder_text();
2173
2174 let placeholder_lines = placeholder_text
2175 .as_ref()
2176 .map_or("", AsRef::as_ref)
2177 .split('\n')
2178 .skip(rows.start.0 as usize)
2179 .chain(iter::repeat(""))
2180 .take(rows.len());
2181 placeholder_lines
2182 .filter_map(move |line| {
2183 let run = TextRun {
2184 len: line.len(),
2185 font: style.text.font(),
2186 color: placeholder_color,
2187 background_color: None,
2188 underline: Default::default(),
2189 strikethrough: None,
2190 };
2191 cx.text_system()
2192 .shape_line(line.to_string().into(), font_size, &[run])
2193 .log_err()
2194 })
2195 .map(|line| LineWithInvisibles {
2196 width: line.width,
2197 len: line.len,
2198 fragments: smallvec![LineFragment::Text(line)],
2199 invisibles: Vec::new(),
2200 font_size,
2201 })
2202 .collect()
2203 } else {
2204 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
2205 LineWithInvisibles::from_chunks(
2206 chunks,
2207 &style,
2208 MAX_LINE_LEN,
2209 rows.len(),
2210 snapshot.mode,
2211 editor_width,
2212 is_row_soft_wrapped,
2213 cx,
2214 )
2215 }
2216 }
2217
2218 fn prepaint_lines(
2219 &self,
2220 start_row: DisplayRow,
2221 line_layouts: &mut [LineWithInvisibles],
2222 line_height: Pixels,
2223 scroll_pixel_position: gpui::Point<Pixels>,
2224 content_origin: gpui::Point<Pixels>,
2225 cx: &mut WindowContext,
2226 ) -> SmallVec<[AnyElement; 1]> {
2227 let mut line_elements = SmallVec::new();
2228 for (ix, line) in line_layouts.iter_mut().enumerate() {
2229 let row = start_row + DisplayRow(ix as u32);
2230 line.prepaint(
2231 line_height,
2232 scroll_pixel_position,
2233 row,
2234 content_origin,
2235 &mut line_elements,
2236 cx,
2237 );
2238 }
2239 line_elements
2240 }
2241
2242 #[allow(clippy::too_many_arguments)]
2243 fn render_block(
2244 &self,
2245 block: &Block,
2246 available_width: AvailableSpace,
2247 block_id: BlockId,
2248 block_row_start: DisplayRow,
2249 snapshot: &EditorSnapshot,
2250 text_x: Pixels,
2251 rows: &Range<DisplayRow>,
2252 line_layouts: &[LineWithInvisibles],
2253 gutter_dimensions: &GutterDimensions,
2254 line_height: Pixels,
2255 em_width: Pixels,
2256 text_hitbox: &Hitbox,
2257 editor_width: Pixels,
2258 scroll_width: &mut Pixels,
2259 resized_blocks: &mut HashMap<CustomBlockId, u32>,
2260 selections: &[Selection<Point>],
2261 selected_buffer_ids: &Vec<BufferId>,
2262 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2263 sticky_header_excerpt_id: Option<ExcerptId>,
2264 cx: &mut WindowContext,
2265 ) -> (AnyElement, Size<Pixels>) {
2266 let mut element = match block {
2267 Block::Custom(block) => {
2268 let block_start = block.start().to_point(&snapshot.buffer_snapshot);
2269 let block_end = block.end().to_point(&snapshot.buffer_snapshot);
2270 let align_to = block_start.to_display_point(snapshot);
2271 let anchor_x = text_x
2272 + if rows.contains(&align_to.row()) {
2273 line_layouts[align_to.row().minus(rows.start) as usize]
2274 .x_for_index(align_to.column() as usize)
2275 } else {
2276 layout_line(
2277 align_to.row(),
2278 snapshot,
2279 &self.style,
2280 editor_width,
2281 is_row_soft_wrapped,
2282 cx,
2283 )
2284 .x_for_index(align_to.column() as usize)
2285 };
2286
2287 let selected = selections
2288 .binary_search_by(|selection| {
2289 if selection.end <= block_start {
2290 Ordering::Less
2291 } else if selection.start >= block_end {
2292 Ordering::Greater
2293 } else {
2294 Ordering::Equal
2295 }
2296 })
2297 .is_ok();
2298
2299 div()
2300 .size_full()
2301 .child(block.render(&mut BlockContext {
2302 context: cx,
2303 anchor_x,
2304 gutter_dimensions,
2305 line_height,
2306 em_width,
2307 block_id,
2308 selected,
2309 max_width: text_hitbox.size.width.max(*scroll_width),
2310 editor_style: &self.style,
2311 }))
2312 .into_any()
2313 }
2314
2315 Block::FoldedBuffer {
2316 first_excerpt,
2317 prev_excerpt,
2318 show_excerpt_controls,
2319 height,
2320 } => {
2321 let selected = selected_buffer_ids.contains(&first_excerpt.buffer_id);
2322 let icon_offset = gutter_dimensions.width
2323 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2324 let mut result = v_flex().id(block_id).w_full();
2325
2326 if let Some(prev_excerpt) = prev_excerpt {
2327 if *show_excerpt_controls {
2328 result = result.child(
2329 h_flex()
2330 .id("expand_down_hit_area")
2331 .w(icon_offset)
2332 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2333 .flex_none()
2334 .justify_end()
2335 .child(self.render_expand_excerpt_button(
2336 IconName::ArrowDownFromLine,
2337 None,
2338 cx,
2339 ))
2340 .on_click(cx.listener_for(&self.editor, {
2341 let excerpt_id = prev_excerpt.id;
2342 let direction = ExpandExcerptDirection::Down;
2343 move |editor, _, cx| {
2344 editor.expand_excerpt(excerpt_id, direction, cx);
2345 cx.stop_propagation();
2346 }
2347 })),
2348 );
2349 }
2350 }
2351
2352 let jump_data = header_jump_data(snapshot, block_row_start, *height, first_excerpt);
2353 result
2354 .child(self.render_buffer_header(first_excerpt, true, selected, jump_data, cx))
2355 .into_any_element()
2356 }
2357
2358 Block::ExcerptBoundary {
2359 prev_excerpt,
2360 next_excerpt,
2361 show_excerpt_controls,
2362 height,
2363 starts_new_buffer,
2364 } => {
2365 let icon_offset = gutter_dimensions.width
2366 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2367 let header_height = MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height();
2368 let color = cx.theme().colors().clone();
2369 let hover_color = color.border_variant.opacity(0.5);
2370 let focus_handle = self.editor.focus_handle(cx).clone();
2371
2372 let mut result = v_flex().id(block_id).w_full();
2373 let expand_area = |id: SharedString| {
2374 h_flex()
2375 .id(id)
2376 .w_full()
2377 .cursor_pointer()
2378 .block_mouse_down()
2379 .on_mouse_move(|_, cx| cx.stop_propagation())
2380 .hover(|style| style.bg(hover_color))
2381 .tooltip({
2382 let focus_handle = focus_handle.clone();
2383 move |cx| {
2384 Tooltip::for_action_in(
2385 "Expand Excerpt",
2386 &ExpandExcerpts { lines: 0 },
2387 &focus_handle,
2388 cx,
2389 )
2390 }
2391 })
2392 };
2393
2394 if let Some(prev_excerpt) = prev_excerpt {
2395 if *show_excerpt_controls {
2396 let group_name = "expand-down";
2397
2398 result = result.child(
2399 expand_area(format!("block-{}-down", block_id).into())
2400 .group(group_name)
2401 .child(
2402 h_flex()
2403 .w(icon_offset)
2404 .h(header_height)
2405 .flex_none()
2406 .justify_end()
2407 .child(self.render_expand_excerpt_button(
2408 IconName::ArrowDownFromLine,
2409 Some(group_name.to_string()),
2410 cx,
2411 )),
2412 )
2413 .on_click(cx.listener_for(&self.editor, {
2414 let excerpt_id = prev_excerpt.id;
2415 let direction = ExpandExcerptDirection::Down;
2416 move |editor, _, cx| {
2417 editor.expand_excerpt(excerpt_id, direction, cx);
2418 cx.stop_propagation();
2419 }
2420 })),
2421 );
2422 }
2423 }
2424
2425 if let Some(next_excerpt) = next_excerpt {
2426 let jump_data =
2427 header_jump_data(snapshot, block_row_start, *height, next_excerpt);
2428
2429 if *starts_new_buffer {
2430 if sticky_header_excerpt_id != Some(next_excerpt.id) {
2431 let selected = selected_buffer_ids.contains(&next_excerpt.buffer_id);
2432
2433 result = result.child(self.render_buffer_header(
2434 next_excerpt,
2435 false,
2436 selected,
2437 jump_data,
2438 cx,
2439 ));
2440 } else {
2441 result =
2442 result.child(div().h(FILE_HEADER_HEIGHT as f32 * cx.line_height()));
2443 }
2444
2445 if *show_excerpt_controls {
2446 let group_name = "expand-up-first";
2447
2448 result = result.child(
2449 h_flex().group(group_name).child(
2450 expand_area(format!("block-{}-up-first", block_id).into())
2451 .h(header_height)
2452 .child(
2453 h_flex()
2454 .w(icon_offset)
2455 .h(header_height)
2456 .flex_none()
2457 .justify_end()
2458 .child(self.render_expand_excerpt_button(
2459 IconName::ArrowUpFromLine,
2460 Some(group_name.to_string()),
2461 cx,
2462 )),
2463 )
2464 .on_click(cx.listener_for(&self.editor, {
2465 let excerpt_id = next_excerpt.id;
2466 let direction = ExpandExcerptDirection::Up;
2467 move |editor, _, cx| {
2468 editor.expand_excerpt(excerpt_id, direction, cx);
2469 cx.stop_propagation();
2470 }
2471 })),
2472 ),
2473 );
2474 }
2475 } else {
2476 let group_name = "expand-up-subsequent";
2477
2478 if *show_excerpt_controls {
2479 result = result.child(
2480 h_flex()
2481 .relative()
2482 .group(group_name)
2483 .child(
2484 div()
2485 .top(px(0.))
2486 .absolute()
2487 .w_full()
2488 .h_px()
2489 .bg(color.border_variant),
2490 )
2491 .child(
2492 expand_area(format!("block-{}-up", block_id).into())
2493 .h(header_height)
2494 .child(
2495 h_flex()
2496 .w(icon_offset)
2497 .h(header_height)
2498 .flex_none()
2499 .justify_end()
2500 .child(if *show_excerpt_controls {
2501 self.render_expand_excerpt_button(
2502 IconName::ArrowUpFromLine,
2503 Some(group_name.to_string()),
2504 cx,
2505 )
2506 } else {
2507 ButtonLike::new("jump-icon")
2508 .style(ButtonStyle::Transparent)
2509 .child(
2510 svg()
2511 .path(
2512 IconName::ArrowUpRight
2513 .path(),
2514 )
2515 .size(IconSize::XSmall.rems())
2516 .text_color(
2517 color.border_variant,
2518 )
2519 .group_hover(
2520 group_name,
2521 |style| {
2522 style.text_color(
2523 color.border,
2524 )
2525 },
2526 ),
2527 )
2528 }),
2529 )
2530 .on_click(cx.listener_for(&self.editor, {
2531 let excerpt_id = next_excerpt.id;
2532 let direction = ExpandExcerptDirection::Up;
2533 move |editor, _, cx| {
2534 editor
2535 .expand_excerpt(excerpt_id, direction, cx);
2536 cx.stop_propagation();
2537 }
2538 })),
2539 ),
2540 );
2541 }
2542 };
2543 }
2544
2545 result.into_any()
2546 }
2547 };
2548
2549 // Discover the element's content height, then round up to the nearest multiple of line height.
2550 let preliminary_size =
2551 element.layout_as_root(size(available_width, AvailableSpace::MinContent), cx);
2552 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2553 let final_size = if preliminary_size.height == quantized_height {
2554 preliminary_size
2555 } else {
2556 element.layout_as_root(size(available_width, quantized_height.into()), cx)
2557 };
2558
2559 if let BlockId::Custom(custom_block_id) = block_id {
2560 if block.height() > 0 {
2561 let element_height_in_lines =
2562 ((final_size.height / line_height).ceil() as u32).max(1);
2563 if element_height_in_lines != block.height() {
2564 resized_blocks.insert(custom_block_id, element_height_in_lines);
2565 }
2566 }
2567 }
2568
2569 (element, final_size)
2570 }
2571
2572 fn render_buffer_header(
2573 &self,
2574 for_excerpt: &ExcerptInfo,
2575 is_folded: bool,
2576 is_selected: bool,
2577 jump_data: JumpData,
2578 cx: &mut WindowContext,
2579 ) -> Div {
2580 let include_root = self
2581 .editor
2582 .read(cx)
2583 .project
2584 .as_ref()
2585 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2586 .unwrap_or_default();
2587 let path = for_excerpt.buffer.resolve_file_path(cx, include_root);
2588 let filename = path
2589 .as_ref()
2590 .and_then(|path| Some(path.file_name()?.to_string_lossy().to_string()));
2591 let parent_path = path
2592 .as_ref()
2593 .and_then(|path| Some(path.parent()?.to_string_lossy().to_string() + "/"));
2594 let focus_handle = self.editor.focus_handle(cx);
2595 let colors = cx.theme().colors();
2596
2597 div()
2598 .px_2()
2599 .pt_2()
2600 .w_full()
2601 .h(FILE_HEADER_HEIGHT as f32 * cx.line_height())
2602 .child(
2603 h_flex()
2604 .size_full()
2605 .gap_2()
2606 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2607 .pl_0p5()
2608 .pr_5()
2609 .rounded_md()
2610 .shadow_md()
2611 .border_1()
2612 .map(|div| {
2613 let border_color = if is_selected && is_folded {
2614 colors.border_focused
2615 } else {
2616 colors.border
2617 };
2618 div.border_color(border_color)
2619 })
2620 .bg(colors.editor_subheader_background)
2621 .hover(|style| style.bg(colors.element_hover))
2622 .map(|header| {
2623 let editor = self.editor.clone();
2624 let buffer_id = for_excerpt.buffer_id;
2625 let toggle_chevron_icon =
2626 FileIcons::get_chevron_icon(!is_folded, cx).map(Icon::from_path);
2627 header.child(
2628 div()
2629 .hover(|style| style.bg(colors.element_selected))
2630 .rounded_sm()
2631 .child(
2632 ButtonLike::new("toggle-buffer-fold")
2633 .style(ui::ButtonStyle::Transparent)
2634 .size(ButtonSize::Large)
2635 .width(px(30.).into())
2636 .children(toggle_chevron_icon)
2637 .tooltip({
2638 let focus_handle = focus_handle.clone();
2639 move |cx| {
2640 Tooltip::for_action_in(
2641 "Toggle Excerpt Fold",
2642 &ToggleFold,
2643 &focus_handle,
2644 cx,
2645 )
2646 }
2647 })
2648 .on_click(move |_, cx| {
2649 if is_folded {
2650 editor.update(cx, |editor, cx| {
2651 editor.unfold_buffer(buffer_id, cx);
2652 });
2653 } else {
2654 editor.update(cx, |editor, cx| {
2655 editor.fold_buffer(buffer_id, cx);
2656 });
2657 }
2658 }),
2659 ),
2660 )
2661 })
2662 .child(
2663 h_flex()
2664 .cursor_pointer()
2665 .id("path header block")
2666 .size_full()
2667 .justify_between()
2668 .child(
2669 h_flex()
2670 .gap_2()
2671 .child(
2672 filename
2673 .map(SharedString::from)
2674 .unwrap_or_else(|| "untitled".into()),
2675 )
2676 .when_some(parent_path, |then, path| {
2677 then.child(div().child(path).text_color(colors.text_muted))
2678 }),
2679 )
2680 .when(is_selected, |el| {
2681 el.child(
2682 h_flex()
2683 .id("jump-to-file-button")
2684 .gap_2p5()
2685 .child(Label::new("Jump To File"))
2686 .children(
2687 KeyBinding::for_action_in(
2688 &OpenExcerpts,
2689 &focus_handle,
2690 cx,
2691 )
2692 .map(|binding| binding.into_any_element()),
2693 ),
2694 )
2695 })
2696 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
2697 .on_click(cx.listener_for(&self.editor, {
2698 move |editor, e: &ClickEvent, cx| {
2699 editor.open_excerpts_common(
2700 Some(jump_data.clone()),
2701 e.down.modifiers.secondary(),
2702 cx,
2703 );
2704 }
2705 })),
2706 ),
2707 )
2708 }
2709
2710 fn render_expand_excerpt_button(
2711 &self,
2712 icon: IconName,
2713 group_name: impl Into<Option<String>>,
2714 cx: &mut WindowContext,
2715 ) -> ButtonLike {
2716 let group_name = group_name.into();
2717 ButtonLike::new("expand-icon")
2718 .style(ButtonStyle::Transparent)
2719 .child(
2720 svg()
2721 .path(icon.path())
2722 .size(IconSize::XSmall.rems())
2723 .text_color(cx.theme().colors().editor_line_number)
2724 .when_some(group_name, |svg, group_name| {
2725 svg.group_hover(group_name, |style| {
2726 style.text_color(cx.theme().colors().editor_active_line_number)
2727 })
2728 }),
2729 )
2730 }
2731
2732 #[allow(clippy::too_many_arguments)]
2733 fn render_blocks(
2734 &self,
2735 rows: Range<DisplayRow>,
2736 snapshot: &EditorSnapshot,
2737 hitbox: &Hitbox,
2738 text_hitbox: &Hitbox,
2739 editor_width: Pixels,
2740 scroll_width: &mut Pixels,
2741 gutter_dimensions: &GutterDimensions,
2742 em_width: Pixels,
2743 text_x: Pixels,
2744 line_height: Pixels,
2745 line_layouts: &[LineWithInvisibles],
2746 selections: &[Selection<Point>],
2747 selected_buffer_ids: &Vec<BufferId>,
2748 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2749 sticky_header_excerpt_id: Option<ExcerptId>,
2750 cx: &mut WindowContext,
2751 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2752 let (fixed_blocks, non_fixed_blocks) = snapshot
2753 .blocks_in_range(rows.clone())
2754 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2755
2756 let mut focused_block = self
2757 .editor
2758 .update(cx, |editor, _| editor.take_focused_block());
2759 let mut fixed_block_max_width = Pixels::ZERO;
2760 let mut blocks = Vec::new();
2761 let mut resized_blocks = HashMap::default();
2762
2763 for (row, block) in fixed_blocks {
2764 let block_id = block.id();
2765
2766 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2767 focused_block = None;
2768 }
2769
2770 let (element, element_size) = self.render_block(
2771 block,
2772 AvailableSpace::MinContent,
2773 block_id,
2774 row,
2775 snapshot,
2776 text_x,
2777 &rows,
2778 line_layouts,
2779 gutter_dimensions,
2780 line_height,
2781 em_width,
2782 text_hitbox,
2783 editor_width,
2784 scroll_width,
2785 &mut resized_blocks,
2786 selections,
2787 selected_buffer_ids,
2788 is_row_soft_wrapped,
2789 sticky_header_excerpt_id,
2790 cx,
2791 );
2792 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2793 blocks.push(BlockLayout {
2794 id: block_id,
2795 row: Some(row),
2796 element,
2797 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
2798 style: BlockStyle::Fixed,
2799 });
2800 }
2801
2802 for (row, block) in non_fixed_blocks {
2803 let style = block.style();
2804 let width = match style {
2805 BlockStyle::Sticky => hitbox.size.width,
2806 BlockStyle::Flex => hitbox
2807 .size
2808 .width
2809 .max(fixed_block_max_width)
2810 .max(gutter_dimensions.width + *scroll_width),
2811 BlockStyle::Fixed => unreachable!(),
2812 };
2813 let block_id = block.id();
2814
2815 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2816 focused_block = None;
2817 }
2818
2819 let (element, element_size) = self.render_block(
2820 block,
2821 width.into(),
2822 block_id,
2823 row,
2824 snapshot,
2825 text_x,
2826 &rows,
2827 line_layouts,
2828 gutter_dimensions,
2829 line_height,
2830 em_width,
2831 text_hitbox,
2832 editor_width,
2833 scroll_width,
2834 &mut resized_blocks,
2835 selections,
2836 selected_buffer_ids,
2837 is_row_soft_wrapped,
2838 sticky_header_excerpt_id,
2839 cx,
2840 );
2841
2842 blocks.push(BlockLayout {
2843 id: block_id,
2844 row: Some(row),
2845 element,
2846 available_space: size(width.into(), element_size.height.into()),
2847 style,
2848 });
2849 }
2850
2851 if let Some(focused_block) = focused_block {
2852 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2853 if focus_handle.is_focused(cx) {
2854 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2855 let style = block.style();
2856 let width = match style {
2857 BlockStyle::Fixed => AvailableSpace::MinContent,
2858 BlockStyle::Flex => AvailableSpace::Definite(
2859 hitbox
2860 .size
2861 .width
2862 .max(fixed_block_max_width)
2863 .max(gutter_dimensions.width + *scroll_width),
2864 ),
2865 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2866 };
2867
2868 let (element, element_size) = self.render_block(
2869 &block,
2870 width,
2871 focused_block.id,
2872 rows.end,
2873 snapshot,
2874 text_x,
2875 &rows,
2876 line_layouts,
2877 gutter_dimensions,
2878 line_height,
2879 em_width,
2880 text_hitbox,
2881 editor_width,
2882 scroll_width,
2883 &mut resized_blocks,
2884 selections,
2885 selected_buffer_ids,
2886 is_row_soft_wrapped,
2887 sticky_header_excerpt_id,
2888 cx,
2889 );
2890
2891 blocks.push(BlockLayout {
2892 id: block.id(),
2893 row: None,
2894 element,
2895 available_space: size(width, element_size.height.into()),
2896 style,
2897 });
2898 }
2899 }
2900 }
2901 }
2902
2903 if resized_blocks.is_empty() {
2904 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2905 Ok(blocks)
2906 } else {
2907 Err(resized_blocks)
2908 }
2909 }
2910
2911 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
2912 /// a restart of rendering for the editor based on the new sizes.
2913 fn layout_blocks(
2914 &self,
2915 blocks: &mut Vec<BlockLayout>,
2916 block_starts: &mut HashSet<DisplayRow>,
2917 hitbox: &Hitbox,
2918 line_height: Pixels,
2919 scroll_pixel_position: gpui::Point<Pixels>,
2920 cx: &mut WindowContext,
2921 ) {
2922 for block in blocks {
2923 let mut origin = if let Some(row) = block.row {
2924 block_starts.insert(row);
2925 hitbox.origin
2926 + point(
2927 Pixels::ZERO,
2928 row.as_f32() * line_height - scroll_pixel_position.y,
2929 )
2930 } else {
2931 // Position the block outside the visible area
2932 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2933 };
2934
2935 if !matches!(block.style, BlockStyle::Sticky) {
2936 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2937 }
2938
2939 let focus_handle = block
2940 .element
2941 .prepaint_as_root(origin, block.available_space, cx);
2942
2943 if let Some(focus_handle) = focus_handle {
2944 self.editor.update(cx, |editor, _cx| {
2945 editor.set_focused_block(FocusedBlock {
2946 id: block.id,
2947 focus_handle: focus_handle.downgrade(),
2948 });
2949 });
2950 }
2951 }
2952 }
2953
2954 #[allow(clippy::too_many_arguments)]
2955 fn layout_sticky_buffer_header(
2956 &self,
2957 StickyHeaderExcerpt {
2958 excerpt,
2959 next_excerpt_controls_present,
2960 next_buffer_row,
2961 }: StickyHeaderExcerpt<'_>,
2962 scroll_position: f32,
2963 line_height: Pixels,
2964 snapshot: &EditorSnapshot,
2965 hitbox: &Hitbox,
2966 selected_buffer_ids: &Vec<BufferId>,
2967 cx: &mut WindowContext,
2968 ) -> AnyElement {
2969 let jump_data = header_jump_data(
2970 snapshot,
2971 DisplayRow(scroll_position as u32),
2972 FILE_HEADER_HEIGHT + MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
2973 excerpt,
2974 );
2975
2976 let editor_bg_color = cx.theme().colors().editor_background;
2977
2978 let selected = selected_buffer_ids.contains(&excerpt.buffer_id);
2979
2980 let mut header = v_flex()
2981 .relative()
2982 .child(
2983 div()
2984 .w(hitbox.bounds.size.width)
2985 .h(FILE_HEADER_HEIGHT as f32 * line_height)
2986 .bg(linear_gradient(
2987 0.,
2988 linear_color_stop(editor_bg_color.opacity(0.), 0.),
2989 linear_color_stop(editor_bg_color, 0.6),
2990 ))
2991 .absolute()
2992 .top_0(),
2993 )
2994 .child(
2995 self.render_buffer_header(excerpt, false, selected, jump_data, cx)
2996 .into_any_element(),
2997 )
2998 .into_any_element();
2999
3000 let mut origin = hitbox.origin;
3001
3002 if let Some(next_buffer_row) = next_buffer_row {
3003 // Push up the sticky header when the excerpt is getting close to the top of the viewport
3004
3005 let mut max_row = next_buffer_row - FILE_HEADER_HEIGHT * 2;
3006
3007 if next_excerpt_controls_present {
3008 max_row -= MULTI_BUFFER_EXCERPT_HEADER_HEIGHT;
3009 }
3010
3011 let offset = scroll_position - max_row as f32;
3012
3013 if offset > 0.0 {
3014 origin.y -= Pixels(offset) * line_height;
3015 }
3016 }
3017
3018 let size = size(
3019 AvailableSpace::Definite(hitbox.size.width),
3020 AvailableSpace::MinContent,
3021 );
3022
3023 header.prepaint_as_root(origin, size, cx);
3024
3025 header
3026 }
3027
3028 #[allow(clippy::too_many_arguments)]
3029 fn layout_context_menu(
3030 &self,
3031 line_height: Pixels,
3032 text_hitbox: &Hitbox,
3033 content_origin: gpui::Point<Pixels>,
3034 start_row: DisplayRow,
3035 scroll_pixel_position: gpui::Point<Pixels>,
3036 line_layouts: &[LineWithInvisibles],
3037 newest_selection_head: DisplayPoint,
3038 gutter_overshoot: Pixels,
3039 cx: &mut WindowContext,
3040 ) {
3041 let Some(context_menu_origin) = self
3042 .editor
3043 .read(cx)
3044 .context_menu_origin(newest_selection_head)
3045 else {
3046 return;
3047 };
3048 let target_position = content_origin
3049 + match context_menu_origin {
3050 crate::ContextMenuOrigin::EditorPoint(display_point) => {
3051 let cursor_row_layout =
3052 &line_layouts[display_point.row().minus(start_row) as usize];
3053 gpui::Point {
3054 x: cmp::max(
3055 px(0.),
3056 cursor_row_layout.x_for_index(display_point.column() as usize)
3057 - scroll_pixel_position.x,
3058 ),
3059 y: cmp::max(
3060 px(0.),
3061 display_point.row().next_row().as_f32() * line_height
3062 - scroll_pixel_position.y,
3063 ),
3064 }
3065 }
3066 crate::ContextMenuOrigin::GutterIndicator(row) => {
3067 // 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
3068 // text field.
3069 gpui::Point {
3070 x: -gutter_overshoot,
3071 y: row.next_row().as_f32() * line_height - scroll_pixel_position.y,
3072 }
3073 }
3074 };
3075
3076 let viewport_bounds = Bounds::new(Default::default(), cx.viewport_size()).extend(Edges {
3077 right: -Self::SCROLLBAR_WIDTH - MENU_GAP,
3078 ..Default::default()
3079 });
3080
3081 // If the context menu's max height won't fit below, then flip it above the line and display
3082 // it in reverse order. If the available space above is less than below.
3083 let unconstrained_max_height = line_height * 12. + POPOVER_Y_PADDING;
3084 let min_height = line_height * 3. + POPOVER_Y_PADDING;
3085 let bottom_y_when_flipped = target_position.y - line_height;
3086 let available_above = bottom_y_when_flipped - text_hitbox.top();
3087 let available_below = text_hitbox.bottom() - target_position.y;
3088 let y_overflows_below = unconstrained_max_height > available_below;
3089 let mut y_is_flipped = y_overflows_below && available_above > available_below;
3090 let mut height = cmp::min(
3091 unconstrained_max_height,
3092 if y_is_flipped {
3093 available_above
3094 } else {
3095 available_below
3096 },
3097 );
3098
3099 // If less than 3 lines fit within the text bounds, instead fit within the window.
3100 if height < min_height {
3101 let available_above = bottom_y_when_flipped;
3102 let available_below = viewport_bounds.bottom() - target_position.y;
3103 if available_below > 3. * line_height {
3104 y_is_flipped = false;
3105 height = min_height;
3106 } else if available_above > 3. * line_height {
3107 y_is_flipped = true;
3108 height = min_height;
3109 } else if available_above > available_below {
3110 y_is_flipped = true;
3111 height = available_above;
3112 } else {
3113 y_is_flipped = false;
3114 height = available_below;
3115 }
3116 }
3117
3118 let max_height_in_lines = ((height - POPOVER_Y_PADDING) / line_height).floor() as u32;
3119
3120 // TODO(mgsloan): use viewport_bounds.width as a max width when rendering menu.
3121 let Some(mut menu_element) = self.editor.update(cx, |editor, cx| {
3122 editor.render_context_menu(&self.style, max_height_in_lines, cx)
3123 }) else {
3124 return;
3125 };
3126
3127 let menu_size = menu_element.layout_as_root(AvailableSpace::min_size(), cx);
3128 let menu_position = gpui::Point {
3129 // Snap the right edge of the list to the right edge of the window if its horizontal bounds
3130 // overflow. Include space for the scrollbar.
3131 x: target_position
3132 .x
3133 .min((viewport_bounds.right() - menu_size.width).max(Pixels::ZERO)),
3134 y: if y_is_flipped {
3135 bottom_y_when_flipped - menu_size.height
3136 } else {
3137 target_position.y
3138 },
3139 };
3140 cx.defer_draw(menu_element, menu_position, 1);
3141
3142 // Layout documentation aside
3143 let menu_bounds = Bounds::new(menu_position, menu_size);
3144 let max_menu_size = size(menu_size.width, unconstrained_max_height);
3145 let max_menu_bounds = if y_is_flipped {
3146 Bounds::new(
3147 point(
3148 menu_position.x,
3149 bottom_y_when_flipped - max_menu_size.height,
3150 ),
3151 max_menu_size,
3152 )
3153 } else {
3154 Bounds::new(target_position, max_menu_size)
3155 };
3156 self.layout_context_menu_aside(
3157 text_hitbox,
3158 y_is_flipped,
3159 menu_position,
3160 menu_bounds,
3161 max_menu_bounds,
3162 unconstrained_max_height,
3163 line_height,
3164 viewport_bounds,
3165 cx,
3166 );
3167 }
3168
3169 #[allow(clippy::too_many_arguments)]
3170 fn layout_context_menu_aside(
3171 &self,
3172 text_hitbox: &Hitbox,
3173 y_is_flipped: bool,
3174 menu_position: gpui::Point<Pixels>,
3175 menu_bounds: Bounds<Pixels>,
3176 max_menu_bounds: Bounds<Pixels>,
3177 max_height: Pixels,
3178 line_height: Pixels,
3179 viewport_bounds: Bounds<Pixels>,
3180 cx: &mut WindowContext,
3181 ) {
3182 let mut extend_amount = Edges::all(MENU_GAP);
3183 // Extend to include the cursored line to avoid overlapping it.
3184 if y_is_flipped {
3185 extend_amount.bottom = line_height;
3186 } else {
3187 extend_amount.top = line_height;
3188 }
3189 let target_bounds = menu_bounds.extend(extend_amount);
3190 let max_target_bounds = max_menu_bounds.extend(extend_amount);
3191
3192 let available_within_viewport = target_bounds.space_within(&viewport_bounds);
3193 let positioned_aside = if available_within_viewport.right >= MENU_ASIDE_MIN_WIDTH {
3194 let max_width = cmp::min(
3195 available_within_viewport.right - px(1.),
3196 MENU_ASIDE_MAX_WIDTH,
3197 );
3198 let Some(mut aside) =
3199 self.render_context_menu_aside(size(max_width, max_height - POPOVER_Y_PADDING), cx)
3200 else {
3201 return;
3202 };
3203 aside.layout_as_root(AvailableSpace::min_size(), cx);
3204 let right_position = point(target_bounds.right(), menu_position.y);
3205 Some((aside, right_position))
3206 } else {
3207 let max_size = size(
3208 // TODO(mgsloan): Once the menu is bounded by viewport width the bound on viewport
3209 // won't be needed here.
3210 cmp::min(
3211 cmp::max(menu_bounds.size.width - px(2.), MENU_ASIDE_MIN_WIDTH),
3212 viewport_bounds.right(),
3213 ),
3214 cmp::min(
3215 max_height,
3216 cmp::max(
3217 available_within_viewport.top,
3218 available_within_viewport.bottom,
3219 ),
3220 ) - POPOVER_Y_PADDING,
3221 );
3222 let Some(mut aside) = self.render_context_menu_aside(max_size, cx) else {
3223 return;
3224 };
3225 let actual_size = aside.layout_as_root(AvailableSpace::min_size(), cx);
3226
3227 let top_position = point(menu_position.x, target_bounds.top() - actual_size.height);
3228 let bottom_position = point(menu_position.x, target_bounds.bottom());
3229
3230 let fit_within = |available: Edges<Pixels>, wanted: Size<Pixels>| {
3231 // Prefer to fit on the same side of the line as the menu, then on the other side of
3232 // the line.
3233 if !y_is_flipped && wanted.height < available.bottom {
3234 Some(bottom_position)
3235 } else if !y_is_flipped && wanted.height < available.top {
3236 Some(top_position)
3237 } else if y_is_flipped && wanted.height < available.top {
3238 Some(top_position)
3239 } else if y_is_flipped && wanted.height < available.bottom {
3240 Some(bottom_position)
3241 } else {
3242 None
3243 }
3244 };
3245
3246 // Prefer choosing a direction using max sizes rather than actual size for stability.
3247 let available_within_text = max_target_bounds.space_within(&text_hitbox.bounds);
3248 let wanted = size(MENU_ASIDE_MAX_WIDTH, max_height);
3249 let aside_position = fit_within(available_within_text, wanted)
3250 // Fallback: fit max size in window.
3251 .or_else(|| fit_within(max_target_bounds.space_within(&viewport_bounds), wanted))
3252 // Fallback: fit actual size in window.
3253 .or_else(|| fit_within(available_within_viewport, actual_size));
3254
3255 aside_position.map(|position| (aside, position))
3256 };
3257
3258 // Skip drawing if it doesn't fit anywhere.
3259 if let Some((aside, position)) = positioned_aside {
3260 cx.defer_draw(aside, position, 1);
3261 }
3262 }
3263
3264 fn render_context_menu_aside(
3265 &self,
3266 max_size: Size<Pixels>,
3267 cx: &mut WindowContext,
3268 ) -> Option<AnyElement> {
3269 if max_size.width < px(100.) || max_size.height < px(12.) {
3270 None
3271 } else {
3272 self.editor.update(cx, |editor, cx| {
3273 editor.render_context_menu_aside(&self.style, max_size, cx)
3274 })
3275 }
3276 }
3277
3278 #[allow(clippy::too_many_arguments)]
3279 fn layout_inline_completion_popover(
3280 &self,
3281 text_bounds: &Bounds<Pixels>,
3282 editor_snapshot: &EditorSnapshot,
3283 visible_row_range: Range<DisplayRow>,
3284 scroll_top: f32,
3285 scroll_bottom: f32,
3286 line_layouts: &[LineWithInvisibles],
3287 line_height: Pixels,
3288 scroll_pixel_position: gpui::Point<Pixels>,
3289 editor_width: Pixels,
3290 style: &EditorStyle,
3291 cx: &mut WindowContext,
3292 ) -> Option<AnyElement> {
3293 const PADDING_X: Pixels = Pixels(24.);
3294 const PADDING_Y: Pixels = Pixels(2.);
3295
3296 let active_inline_completion = self.editor.read(cx).active_inline_completion.as_ref()?;
3297
3298 match &active_inline_completion.completion {
3299 InlineCompletion::Move(target_position) => {
3300 let tab_kbd = h_flex()
3301 .px_0p5()
3302 .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
3303 .text_size(TextSize::XSmall.rems(cx))
3304 .text_color(cx.theme().colors().text.opacity(0.8))
3305 .child("tab");
3306
3307 let icon_container = div().mt(px(2.5)); // For optical alignment
3308
3309 let container_element = h_flex()
3310 .items_center()
3311 .py_0p5()
3312 .px_1()
3313 .gap_1()
3314 .bg(cx.theme().colors().editor_subheader_background)
3315 .border_1()
3316 .border_color(cx.theme().colors().text_accent.opacity(0.2))
3317 .rounded_md()
3318 .shadow_sm();
3319
3320 let target_display_point = target_position.to_display_point(editor_snapshot);
3321 if target_display_point.row().as_f32() < scroll_top {
3322 let mut element = container_element
3323 .child(tab_kbd)
3324 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3325 .child(
3326 icon_container
3327 .child(Icon::new(IconName::ArrowUp).size(IconSize::Small)),
3328 )
3329 .into_any();
3330 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3331 let offset = point((text_bounds.size.width - size.width) / 2., PADDING_Y);
3332 element.prepaint_at(text_bounds.origin + offset, cx);
3333 Some(element)
3334 } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
3335 let mut element = container_element
3336 .child(tab_kbd)
3337 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3338 .child(
3339 icon_container
3340 .child(Icon::new(IconName::ArrowDown).size(IconSize::Small)),
3341 )
3342 .into_any();
3343 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3344 let offset = point(
3345 (text_bounds.size.width - size.width) / 2.,
3346 text_bounds.size.height - size.height - PADDING_Y,
3347 );
3348 element.prepaint_at(text_bounds.origin + offset, cx);
3349 Some(element)
3350 } else {
3351 let mut element = container_element
3352 .child(tab_kbd)
3353 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3354 .into_any();
3355
3356 let target_line_end = DisplayPoint::new(
3357 target_display_point.row(),
3358 editor_snapshot.line_len(target_display_point.row()),
3359 );
3360 let origin = self.editor.update(cx, |editor, cx| {
3361 editor.display_to_pixel_point(target_line_end, editor_snapshot, cx)
3362 })?;
3363 element.prepaint_as_root(
3364 text_bounds.origin + origin + point(PADDING_X, px(0.)),
3365 AvailableSpace::min_size(),
3366 cx,
3367 );
3368 Some(element)
3369 }
3370 }
3371 InlineCompletion::Edit(edits) => {
3372 if self.editor.read(cx).has_active_completions_menu() {
3373 return None;
3374 }
3375
3376 let edit_start = edits
3377 .first()
3378 .unwrap()
3379 .0
3380 .start
3381 .to_display_point(editor_snapshot);
3382 let edit_end = edits
3383 .last()
3384 .unwrap()
3385 .0
3386 .end
3387 .to_display_point(editor_snapshot);
3388
3389 let is_visible = visible_row_range.contains(&edit_start.row())
3390 || visible_row_range.contains(&edit_end.row());
3391 if !is_visible {
3392 return None;
3393 }
3394
3395 if all_edits_insertions_or_deletions(edits, &editor_snapshot.buffer_snapshot) {
3396 return None;
3397 }
3398
3399 let crate::InlineCompletionText::Edit { text, highlights } =
3400 crate::inline_completion_edit_text(editor_snapshot, edits, false, cx)
3401 else {
3402 return None;
3403 };
3404 let line_count = text.lines().count() + 1;
3405
3406 let longest_row =
3407 editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
3408 let longest_line_width = if visible_row_range.contains(&longest_row) {
3409 line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
3410 } else {
3411 layout_line(
3412 longest_row,
3413 editor_snapshot,
3414 style,
3415 editor_width,
3416 |_| false,
3417 cx,
3418 )
3419 .width
3420 };
3421
3422 let styled_text =
3423 gpui::StyledText::new(text.clone()).with_highlights(&style.text, highlights);
3424
3425 let mut element = div()
3426 .bg(cx.theme().colors().editor_background)
3427 .border_1()
3428 .border_color(cx.theme().colors().border)
3429 .rounded_md()
3430 .px_1()
3431 .child(styled_text)
3432 .into_any();
3433
3434 let element_bounds = element.layout_as_root(AvailableSpace::min_size(), cx);
3435 let is_fully_visible =
3436 editor_width >= longest_line_width + PADDING_X + element_bounds.width;
3437
3438 let origin = if is_fully_visible {
3439 text_bounds.origin
3440 + point(
3441 longest_line_width + PADDING_X - scroll_pixel_position.x,
3442 edit_start.row().as_f32() * line_height - scroll_pixel_position.y,
3443 )
3444 } else {
3445 let target_above =
3446 DisplayRow(edit_start.row().0.saturating_sub(line_count as u32));
3447 let row_target = if visible_row_range
3448 .contains(&DisplayRow(target_above.0.saturating_sub(1)))
3449 {
3450 target_above
3451 } else {
3452 DisplayRow(edit_end.row().0 + 1)
3453 };
3454
3455 text_bounds.origin
3456 + point(
3457 -scroll_pixel_position.x,
3458 row_target.as_f32() * line_height - scroll_pixel_position.y,
3459 )
3460 };
3461
3462 element.prepaint_as_root(origin, element_bounds.into(), cx);
3463 Some(element)
3464 }
3465 }
3466 }
3467
3468 fn layout_mouse_context_menu(
3469 &self,
3470 editor_snapshot: &EditorSnapshot,
3471 visible_range: Range<DisplayRow>,
3472 content_origin: gpui::Point<Pixels>,
3473 cx: &mut WindowContext,
3474 ) -> Option<AnyElement> {
3475 let position = self.editor.update(cx, |editor, cx| {
3476 let visible_start_point = editor.display_to_pixel_point(
3477 DisplayPoint::new(visible_range.start, 0),
3478 editor_snapshot,
3479 cx,
3480 )?;
3481 let visible_end_point = editor.display_to_pixel_point(
3482 DisplayPoint::new(visible_range.end, 0),
3483 editor_snapshot,
3484 cx,
3485 )?;
3486
3487 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3488 let (source_display_point, position) = match mouse_context_menu.position {
3489 MenuPosition::PinnedToScreen(point) => (None, point),
3490 MenuPosition::PinnedToEditor { source, offset } => {
3491 let source_display_point = source.to_display_point(editor_snapshot);
3492 let source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
3493 let position = content_origin + source_point + offset;
3494 (Some(source_display_point), position)
3495 }
3496 };
3497
3498 let source_included = source_display_point.map_or(true, |source_display_point| {
3499 visible_range
3500 .to_inclusive()
3501 .contains(&source_display_point.row())
3502 });
3503 let position_included =
3504 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
3505 if !source_included && !position_included {
3506 None
3507 } else {
3508 Some(position)
3509 }
3510 })?;
3511
3512 let mut element = self.editor.update(cx, |editor, _| {
3513 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3514 let context_menu = mouse_context_menu.context_menu.clone();
3515
3516 Some(
3517 deferred(
3518 anchored()
3519 .position(position)
3520 .child(context_menu)
3521 .anchor(Corner::TopLeft)
3522 .snap_to_window_with_margin(px(8.)),
3523 )
3524 .with_priority(1)
3525 .into_any(),
3526 )
3527 })?;
3528
3529 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
3530 Some(element)
3531 }
3532
3533 #[allow(clippy::too_many_arguments)]
3534 fn layout_hover_popovers(
3535 &self,
3536 snapshot: &EditorSnapshot,
3537 hitbox: &Hitbox,
3538 text_hitbox: &Hitbox,
3539 visible_display_row_range: Range<DisplayRow>,
3540 content_origin: gpui::Point<Pixels>,
3541 scroll_pixel_position: gpui::Point<Pixels>,
3542 line_layouts: &[LineWithInvisibles],
3543 line_height: Pixels,
3544 em_width: Pixels,
3545 cx: &mut WindowContext,
3546 ) {
3547 struct MeasuredHoverPopover {
3548 element: AnyElement,
3549 size: Size<Pixels>,
3550 horizontal_offset: Pixels,
3551 }
3552
3553 let max_size = size(
3554 (120. * em_width) // Default size
3555 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3556 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3557 (16. * line_height) // Default size
3558 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3559 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3560 );
3561
3562 let hover_popovers = self.editor.update(cx, |editor, cx| {
3563 editor
3564 .hover_state
3565 .render(snapshot, visible_display_row_range.clone(), max_size, cx)
3566 });
3567 let Some((position, hover_popovers)) = hover_popovers else {
3568 return;
3569 };
3570
3571 // This is safe because we check on layout whether the required row is available
3572 let hovered_row_layout =
3573 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
3574
3575 // Compute Hovered Point
3576 let x =
3577 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
3578 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
3579 let hovered_point = content_origin + point(x, y);
3580
3581 let mut overall_height = Pixels::ZERO;
3582 let mut measured_hover_popovers = Vec::new();
3583 for mut hover_popover in hover_popovers {
3584 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
3585 let horizontal_offset =
3586 (text_hitbox.top_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
3587
3588 overall_height += HOVER_POPOVER_GAP + size.height;
3589
3590 measured_hover_popovers.push(MeasuredHoverPopover {
3591 element: hover_popover,
3592 size,
3593 horizontal_offset,
3594 });
3595 }
3596 overall_height += HOVER_POPOVER_GAP;
3597
3598 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3599 let mut occlusion = div()
3600 .size_full()
3601 .occlude()
3602 .on_mouse_move(|_, cx| cx.stop_propagation())
3603 .into_any_element();
3604 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
3605 cx.defer_draw(occlusion, origin, 2);
3606 }
3607
3608 if hovered_point.y > overall_height {
3609 // There is enough space above. Render popovers above the hovered point
3610 let mut current_y = hovered_point.y;
3611 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3612 let size = popover.size;
3613 let popover_origin = point(
3614 hovered_point.x + popover.horizontal_offset,
3615 current_y - size.height,
3616 );
3617
3618 cx.defer_draw(popover.element, popover_origin, 2);
3619 if position != itertools::Position::Last {
3620 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
3621 draw_occluder(size.width, origin, cx);
3622 }
3623
3624 current_y = popover_origin.y - HOVER_POPOVER_GAP;
3625 }
3626 } else {
3627 // There is not enough space above. Render popovers below the hovered point
3628 let mut current_y = hovered_point.y + line_height;
3629 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3630 let size = popover.size;
3631 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
3632
3633 cx.defer_draw(popover.element, popover_origin, 2);
3634 if position != itertools::Position::Last {
3635 let origin = point(popover_origin.x, popover_origin.y + size.height);
3636 draw_occluder(size.width, origin, cx);
3637 }
3638
3639 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
3640 }
3641 }
3642 }
3643
3644 #[allow(clippy::too_many_arguments)]
3645 fn layout_signature_help(
3646 &self,
3647 hitbox: &Hitbox,
3648 content_origin: gpui::Point<Pixels>,
3649 scroll_pixel_position: gpui::Point<Pixels>,
3650 newest_selection_head: Option<DisplayPoint>,
3651 start_row: DisplayRow,
3652 line_layouts: &[LineWithInvisibles],
3653 line_height: Pixels,
3654 em_width: Pixels,
3655 cx: &mut WindowContext,
3656 ) {
3657 if !self.editor.focus_handle(cx).is_focused(cx) {
3658 return;
3659 }
3660 let Some(newest_selection_head) = newest_selection_head else {
3661 return;
3662 };
3663 let selection_row = newest_selection_head.row();
3664 if selection_row < start_row {
3665 return;
3666 }
3667 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
3668 else {
3669 return;
3670 };
3671
3672 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
3673 - scroll_pixel_position.x
3674 + content_origin.x;
3675 let start_y =
3676 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
3677
3678 let max_size = size(
3679 (120. * em_width) // Default size
3680 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3681 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3682 (16. * line_height) // Default size
3683 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3684 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3685 );
3686
3687 let maybe_element = self.editor.update(cx, |editor, cx| {
3688 if let Some(popover) = editor.signature_help_state.popover_mut() {
3689 let element = popover.render(
3690 &self.style,
3691 max_size,
3692 editor.workspace.as_ref().map(|(w, _)| w.clone()),
3693 cx,
3694 );
3695 Some(element)
3696 } else {
3697 None
3698 }
3699 });
3700 if let Some(mut element) = maybe_element {
3701 let window_size = cx.viewport_size();
3702 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
3703 let mut point = point(start_x, start_y - size.height);
3704
3705 // Adjusting to ensure the popover does not overflow in the X-axis direction.
3706 if point.x + size.width >= window_size.width {
3707 point.x = window_size.width - size.width;
3708 }
3709
3710 cx.defer_draw(element, point, 1)
3711 }
3712 }
3713
3714 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
3715 cx.paint_layer(layout.hitbox.bounds, |cx| {
3716 let scroll_top = layout.position_map.snapshot.scroll_position().y;
3717 let gutter_bg = cx.theme().colors().editor_gutter_background;
3718 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
3719 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
3720
3721 if let EditorMode::Full = layout.mode {
3722 let mut active_rows = layout.active_rows.iter().peekable();
3723 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
3724 let mut end_row = start_row.0;
3725 while active_rows
3726 .peek()
3727 .map_or(false, |(active_row, has_selection)| {
3728 active_row.0 == end_row + 1
3729 && *has_selection == contains_non_empty_selection
3730 })
3731 {
3732 active_rows.next().unwrap();
3733 end_row += 1;
3734 }
3735
3736 if !contains_non_empty_selection {
3737 let highlight_h_range =
3738 match layout.position_map.snapshot.current_line_highlight {
3739 CurrentLineHighlight::Gutter => Some(Range {
3740 start: layout.hitbox.left(),
3741 end: layout.gutter_hitbox.right(),
3742 }),
3743 CurrentLineHighlight::Line => Some(Range {
3744 start: layout.text_hitbox.bounds.left(),
3745 end: layout.text_hitbox.bounds.right(),
3746 }),
3747 CurrentLineHighlight::All => Some(Range {
3748 start: layout.hitbox.left(),
3749 end: layout.hitbox.right(),
3750 }),
3751 CurrentLineHighlight::None => None,
3752 };
3753 if let Some(range) = highlight_h_range {
3754 let active_line_bg = cx.theme().colors().editor_active_line_background;
3755 let bounds = Bounds {
3756 origin: point(
3757 range.start,
3758 layout.hitbox.origin.y
3759 + (start_row.as_f32() - scroll_top)
3760 * layout.position_map.line_height,
3761 ),
3762 size: size(
3763 range.end - range.start,
3764 layout.position_map.line_height
3765 * (end_row - start_row.0 + 1) as f32,
3766 ),
3767 };
3768 cx.paint_quad(fill(bounds, active_line_bg));
3769 }
3770 }
3771 }
3772
3773 let mut paint_highlight =
3774 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
3775 let origin = point(
3776 layout.hitbox.origin.x,
3777 layout.hitbox.origin.y
3778 + (highlight_row_start.as_f32() - scroll_top)
3779 * layout.position_map.line_height,
3780 );
3781 let size = size(
3782 layout.hitbox.size.width,
3783 layout.position_map.line_height
3784 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
3785 );
3786 cx.paint_quad(fill(Bounds { origin, size }, color));
3787 };
3788
3789 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
3790 for (&new_row, &new_color) in &layout.highlighted_rows {
3791 match &mut current_paint {
3792 Some((current_color, current_range)) => {
3793 let current_color = *current_color;
3794 let new_range_started = current_color != new_color
3795 || current_range.end.next_row() != new_row;
3796 if new_range_started {
3797 paint_highlight(
3798 current_range.start,
3799 current_range.end,
3800 current_color,
3801 );
3802 current_paint = Some((new_color, new_row..new_row));
3803 continue;
3804 } else {
3805 current_range.end = current_range.end.next_row();
3806 }
3807 }
3808 None => current_paint = Some((new_color, new_row..new_row)),
3809 };
3810 }
3811 if let Some((color, range)) = current_paint {
3812 paint_highlight(range.start, range.end, color);
3813 }
3814
3815 let scroll_left =
3816 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
3817
3818 for (wrap_position, active) in layout.wrap_guides.iter() {
3819 let x = (layout.text_hitbox.origin.x
3820 + *wrap_position
3821 + layout.position_map.em_width / 2.)
3822 - scroll_left;
3823
3824 let show_scrollbars = {
3825 let (scrollbar_x, scrollbar_y) = &layout.scrollbars_layout.as_xy();
3826
3827 scrollbar_x.as_ref().map_or(false, |sx| sx.visible)
3828 || scrollbar_y.as_ref().map_or(false, |sy| sy.visible)
3829 };
3830
3831 if x < layout.text_hitbox.origin.x
3832 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
3833 {
3834 continue;
3835 }
3836
3837 let color = if *active {
3838 cx.theme().colors().editor_active_wrap_guide
3839 } else {
3840 cx.theme().colors().editor_wrap_guide
3841 };
3842 cx.paint_quad(fill(
3843 Bounds {
3844 origin: point(x, layout.text_hitbox.origin.y),
3845 size: size(px(1.), layout.text_hitbox.size.height),
3846 },
3847 color,
3848 ));
3849 }
3850 }
3851 })
3852 }
3853
3854 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3855 let Some(indent_guides) = &layout.indent_guides else {
3856 return;
3857 };
3858
3859 let faded_color = |color: Hsla, alpha: f32| {
3860 let mut faded = color;
3861 faded.a = alpha;
3862 faded
3863 };
3864
3865 for indent_guide in indent_guides {
3866 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3867 let settings = indent_guide.settings;
3868
3869 // TODO fixed for now, expose them through themes later
3870 const INDENT_AWARE_ALPHA: f32 = 0.2;
3871 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3872 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3873 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3874
3875 let line_color = match (settings.coloring, indent_guide.active) {
3876 (IndentGuideColoring::Disabled, _) => None,
3877 (IndentGuideColoring::Fixed, false) => {
3878 Some(cx.theme().colors().editor_indent_guide)
3879 }
3880 (IndentGuideColoring::Fixed, true) => {
3881 Some(cx.theme().colors().editor_indent_guide_active)
3882 }
3883 (IndentGuideColoring::IndentAware, false) => {
3884 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3885 }
3886 (IndentGuideColoring::IndentAware, true) => {
3887 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3888 }
3889 };
3890
3891 let background_color = match (settings.background_coloring, indent_guide.active) {
3892 (IndentGuideBackgroundColoring::Disabled, _) => None,
3893 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3894 indent_accent_colors,
3895 INDENT_AWARE_BACKGROUND_ALPHA,
3896 )),
3897 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3898 indent_accent_colors,
3899 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3900 )),
3901 };
3902
3903 let requested_line_width = if indent_guide.active {
3904 settings.active_line_width
3905 } else {
3906 settings.line_width
3907 }
3908 .clamp(1, 10);
3909 let mut line_indicator_width = 0.;
3910 if let Some(color) = line_color {
3911 cx.paint_quad(fill(
3912 Bounds {
3913 origin: indent_guide.origin,
3914 size: size(px(requested_line_width as f32), indent_guide.length),
3915 },
3916 color,
3917 ));
3918 line_indicator_width = requested_line_width as f32;
3919 }
3920
3921 if let Some(color) = background_color {
3922 let width = indent_guide.single_indent_width - px(line_indicator_width);
3923 cx.paint_quad(fill(
3924 Bounds {
3925 origin: point(
3926 indent_guide.origin.x + px(line_indicator_width),
3927 indent_guide.origin.y,
3928 ),
3929 size: size(width, indent_guide.length),
3930 },
3931 color,
3932 ));
3933 }
3934 }
3935 }
3936
3937 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3938 let is_singleton = self.editor.read(cx).is_singleton(cx);
3939
3940 let line_height = layout.position_map.line_height;
3941 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3942
3943 for (_, (line, hitbox)) in layout.line_numbers.iter() {
3944 let Some(hitbox) = hitbox else {
3945 continue;
3946 };
3947 let color = if !is_singleton && hitbox.is_hovered(cx) {
3948 cx.theme().colors().editor_active_line_number
3949 } else {
3950 cx.theme().colors().editor_line_number
3951 };
3952 let Some(line) = self
3953 .shape_line_number(line.text.clone(), color, cx)
3954 .log_err()
3955 else {
3956 continue;
3957 };
3958 let Some(()) = line.paint(hitbox.origin, line_height, cx).log_err() else {
3959 continue;
3960 };
3961 // In singleton buffers, we select corresponding lines on the line number click, so use | -like cursor.
3962 // In multi buffers, we open file at the line number clicked, so use a pointing hand cursor.
3963 if is_singleton {
3964 cx.set_cursor_style(CursorStyle::IBeam, hitbox);
3965 } else {
3966 cx.set_cursor_style(CursorStyle::PointingHand, hitbox);
3967 }
3968 }
3969 }
3970
3971 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
3972 if layout.display_hunks.is_empty() {
3973 return;
3974 }
3975
3976 let line_height = layout.position_map.line_height;
3977 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3978 for (hunk, hitbox) in &layout.display_hunks {
3979 let hunk_to_paint = match hunk {
3980 DisplayDiffHunk::Folded { .. } => {
3981 let hunk_bounds = Self::diff_hunk_bounds(
3982 &layout.position_map.snapshot,
3983 line_height,
3984 layout.gutter_hitbox.bounds,
3985 hunk,
3986 );
3987 Some((
3988 hunk_bounds,
3989 cx.theme().status().modified,
3990 Corners::all(px(0.)),
3991 ))
3992 }
3993 DisplayDiffHunk::Unfolded { status, .. } => {
3994 hitbox.as_ref().map(|hunk_hitbox| match status {
3995 DiffHunkStatus::Added => (
3996 hunk_hitbox.bounds,
3997 cx.theme().status().created,
3998 Corners::all(px(0.)),
3999 ),
4000 DiffHunkStatus::Modified => (
4001 hunk_hitbox.bounds,
4002 cx.theme().status().modified,
4003 Corners::all(px(0.)),
4004 ),
4005 DiffHunkStatus::Removed => (
4006 Bounds::new(
4007 point(
4008 hunk_hitbox.origin.x - hunk_hitbox.size.width,
4009 hunk_hitbox.origin.y,
4010 ),
4011 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
4012 ),
4013 cx.theme().status().deleted,
4014 Corners::all(1. * line_height),
4015 ),
4016 })
4017 }
4018 };
4019
4020 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
4021 cx.paint_quad(quad(
4022 hunk_bounds,
4023 corner_radii,
4024 background_color,
4025 Edges::default(),
4026 transparent_black(),
4027 ));
4028 }
4029 }
4030 });
4031 }
4032
4033 pub(super) fn diff_hunk_bounds(
4034 snapshot: &EditorSnapshot,
4035 line_height: Pixels,
4036 gutter_bounds: Bounds<Pixels>,
4037 hunk: &DisplayDiffHunk,
4038 ) -> Bounds<Pixels> {
4039 let scroll_position = snapshot.scroll_position();
4040 let scroll_top = scroll_position.y * line_height;
4041
4042 match hunk {
4043 DisplayDiffHunk::Folded { display_row, .. } => {
4044 let start_y = display_row.as_f32() * line_height - scroll_top;
4045 let end_y = start_y + line_height;
4046
4047 let width = Self::diff_hunk_strip_width(line_height);
4048 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4049 let highlight_size = size(width, end_y - start_y);
4050 Bounds::new(highlight_origin, highlight_size)
4051 }
4052 DisplayDiffHunk::Unfolded {
4053 display_row_range,
4054 status,
4055 ..
4056 } => match status {
4057 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
4058 let start_row = display_row_range.start;
4059 let end_row = display_row_range.end;
4060 // If we're in a multibuffer, row range span might include an
4061 // excerpt header, so if we were to draw the marker straight away,
4062 // the hunk might include the rows of that header.
4063 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
4064 // Instead, we simply check whether the range we're dealing with includes
4065 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
4066 let end_row_in_current_excerpt = snapshot
4067 .blocks_in_range(start_row..end_row)
4068 .find_map(|(start_row, block)| {
4069 if matches!(block, Block::ExcerptBoundary { .. }) {
4070 Some(start_row)
4071 } else {
4072 None
4073 }
4074 })
4075 .unwrap_or(end_row);
4076
4077 let start_y = start_row.as_f32() * line_height - scroll_top;
4078 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
4079
4080 let width = Self::diff_hunk_strip_width(line_height);
4081 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4082 let highlight_size = size(width, end_y - start_y);
4083 Bounds::new(highlight_origin, highlight_size)
4084 }
4085 DiffHunkStatus::Removed => {
4086 let row = display_row_range.start;
4087
4088 let offset = line_height / 2.;
4089 let start_y = row.as_f32() * line_height - offset - scroll_top;
4090 let end_y = start_y + line_height;
4091
4092 let width = (0.35 * line_height).floor();
4093 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4094 let highlight_size = size(width, end_y - start_y);
4095 Bounds::new(highlight_origin, highlight_size)
4096 }
4097 },
4098 }
4099 }
4100
4101 /// Returns the width of the diff strip that will be displayed in the gutter.
4102 pub(super) fn diff_hunk_strip_width(line_height: Pixels) -> Pixels {
4103 // We floor the value to prevent pixel rounding.
4104 (0.275 * line_height).floor()
4105 }
4106
4107 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4108 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4109 cx.with_element_namespace("crease_toggles", |cx| {
4110 for crease_toggle in layout.crease_toggles.iter_mut().flatten() {
4111 crease_toggle.paint(cx);
4112 }
4113 });
4114
4115 for test_indicator in layout.test_indicators.iter_mut() {
4116 test_indicator.paint(cx);
4117 }
4118
4119 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
4120 indicator.paint(cx);
4121 }
4122 });
4123 }
4124
4125 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4126 for (_, hunk_hitbox) in &layout.display_hunks {
4127 if let Some(hunk_hitbox) = hunk_hitbox {
4128 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
4129 }
4130 }
4131
4132 let show_git_gutter = layout
4133 .position_map
4134 .snapshot
4135 .show_git_diff_gutter
4136 .unwrap_or_else(|| {
4137 matches!(
4138 ProjectSettings::get_global(cx).git.git_gutter,
4139 Some(GitGutterSetting::TrackedFiles)
4140 )
4141 });
4142 if show_git_gutter {
4143 Self::paint_diff_hunks(layout, cx)
4144 }
4145
4146 let highlight_width = 0.275 * layout.position_map.line_height;
4147 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
4148 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4149 for (range, color) in &layout.highlighted_gutter_ranges {
4150 let start_row = if range.start.row() < layout.visible_display_row_range.start {
4151 layout.visible_display_row_range.start - DisplayRow(1)
4152 } else {
4153 range.start.row()
4154 };
4155 let end_row = if range.end.row() > layout.visible_display_row_range.end {
4156 layout.visible_display_row_range.end + DisplayRow(1)
4157 } else {
4158 range.end.row()
4159 };
4160
4161 let start_y = layout.gutter_hitbox.top()
4162 + start_row.0 as f32 * layout.position_map.line_height
4163 - layout.position_map.scroll_pixel_position.y;
4164 let end_y = layout.gutter_hitbox.top()
4165 + (end_row.0 + 1) as f32 * layout.position_map.line_height
4166 - layout.position_map.scroll_pixel_position.y;
4167 let bounds = Bounds::from_corners(
4168 point(layout.gutter_hitbox.left(), start_y),
4169 point(layout.gutter_hitbox.left() + highlight_width, end_y),
4170 );
4171 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
4172 }
4173 });
4174 }
4175
4176 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4177 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
4178 return;
4179 };
4180
4181 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4182 for mut blame_element in blamed_display_rows.into_iter() {
4183 blame_element.paint(cx);
4184 }
4185 })
4186 }
4187
4188 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4189 cx.with_content_mask(
4190 Some(ContentMask {
4191 bounds: layout.text_hitbox.bounds,
4192 }),
4193 |cx| {
4194 let cursor_style = if self
4195 .editor
4196 .read(cx)
4197 .hovered_link_state
4198 .as_ref()
4199 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
4200 {
4201 CursorStyle::PointingHand
4202 } else {
4203 CursorStyle::IBeam
4204 };
4205 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
4206
4207 let invisible_display_ranges = self.paint_highlights(layout, cx);
4208 self.paint_lines(&invisible_display_ranges, layout, cx);
4209 self.paint_redactions(layout, cx);
4210 self.paint_cursors(layout, cx);
4211 self.paint_inline_blame(layout, cx);
4212 cx.with_element_namespace("crease_trailers", |cx| {
4213 for trailer in layout.crease_trailers.iter_mut().flatten() {
4214 trailer.element.paint(cx);
4215 }
4216 });
4217 },
4218 )
4219 }
4220
4221 fn paint_highlights(
4222 &mut self,
4223 layout: &mut EditorLayout,
4224 cx: &mut WindowContext,
4225 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
4226 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4227 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
4228 let line_end_overshoot = 0.15 * layout.position_map.line_height;
4229 for (range, color) in &layout.highlighted_ranges {
4230 self.paint_highlighted_range(
4231 range.clone(),
4232 *color,
4233 Pixels::ZERO,
4234 line_end_overshoot,
4235 layout,
4236 cx,
4237 );
4238 }
4239
4240 let corner_radius = 0.15 * layout.position_map.line_height;
4241
4242 for (player_color, selections) in &layout.selections {
4243 for selection in selections.iter() {
4244 self.paint_highlighted_range(
4245 selection.range.clone(),
4246 player_color.selection,
4247 corner_radius,
4248 corner_radius * 2.,
4249 layout,
4250 cx,
4251 );
4252
4253 if selection.is_local && !selection.range.is_empty() {
4254 invisible_display_ranges.push(selection.range.clone());
4255 }
4256 }
4257 }
4258 invisible_display_ranges
4259 })
4260 }
4261
4262 fn paint_lines(
4263 &mut self,
4264 invisible_display_ranges: &[Range<DisplayPoint>],
4265 layout: &mut EditorLayout,
4266 cx: &mut WindowContext,
4267 ) {
4268 let whitespace_setting = self
4269 .editor
4270 .read(cx)
4271 .buffer
4272 .read(cx)
4273 .settings_at(0, cx)
4274 .show_whitespaces;
4275
4276 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
4277 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
4278 line_with_invisibles.draw(
4279 layout,
4280 row,
4281 layout.content_origin,
4282 whitespace_setting,
4283 invisible_display_ranges,
4284 cx,
4285 )
4286 }
4287
4288 for line_element in &mut layout.line_elements {
4289 line_element.paint(cx);
4290 }
4291 }
4292
4293 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
4294 if layout.redacted_ranges.is_empty() {
4295 return;
4296 }
4297
4298 let line_end_overshoot = layout.line_end_overshoot();
4299
4300 // A softer than perfect black
4301 let redaction_color = gpui::rgb(0x0e1111);
4302
4303 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4304 for range in layout.redacted_ranges.iter() {
4305 self.paint_highlighted_range(
4306 range.clone(),
4307 redaction_color.into(),
4308 Pixels::ZERO,
4309 line_end_overshoot,
4310 layout,
4311 cx,
4312 );
4313 }
4314 });
4315 }
4316
4317 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4318 for cursor in &mut layout.visible_cursors {
4319 cursor.paint(layout.content_origin, cx);
4320 }
4321 }
4322
4323 fn paint_scrollbars(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4324 let (scrollbar_x, scrollbar_y) = layout.scrollbars_layout.as_xy();
4325
4326 if let Some(scrollbar_layout) = scrollbar_x {
4327 let hitbox = scrollbar_layout.hitbox.clone();
4328 let text_unit_size = scrollbar_layout.text_unit_size;
4329 let visible_range = scrollbar_layout.visible_range.clone();
4330 let thumb_bounds = scrollbar_layout.thumb_bounds();
4331
4332 if scrollbar_layout.visible {
4333 cx.paint_layer(hitbox.bounds, |cx| {
4334 cx.paint_quad(quad(
4335 hitbox.bounds,
4336 Corners::default(),
4337 cx.theme().colors().scrollbar_track_background,
4338 Edges {
4339 top: Pixels::ZERO,
4340 right: Pixels::ZERO,
4341 bottom: Pixels::ZERO,
4342 left: Pixels::ZERO,
4343 },
4344 cx.theme().colors().scrollbar_track_border,
4345 ));
4346
4347 cx.paint_quad(quad(
4348 thumb_bounds,
4349 Corners::default(),
4350 cx.theme().colors().scrollbar_thumb_background,
4351 Edges {
4352 top: Pixels::ZERO,
4353 right: Pixels::ZERO,
4354 bottom: Pixels::ZERO,
4355 left: ScrollbarLayout::BORDER_WIDTH,
4356 },
4357 cx.theme().colors().scrollbar_thumb_border,
4358 ));
4359 })
4360 }
4361
4362 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4363
4364 cx.on_mouse_event({
4365 let editor = self.editor.clone();
4366
4367 // there may be a way to avoid this clone
4368 let hitbox = hitbox.clone();
4369
4370 let mut mouse_position = cx.mouse_position();
4371 move |event: &MouseMoveEvent, phase, cx| {
4372 if phase == DispatchPhase::Capture {
4373 return;
4374 }
4375
4376 editor.update(cx, |editor, cx| {
4377 if event.pressed_button == Some(MouseButton::Left)
4378 && editor
4379 .scroll_manager
4380 .is_dragging_scrollbar(Axis::Horizontal)
4381 {
4382 let x = mouse_position.x;
4383 let new_x = event.position.x;
4384 if (hitbox.left()..hitbox.right()).contains(&x) {
4385 let mut position = editor.scroll_position(cx);
4386
4387 position.x += (new_x - x) / text_unit_size;
4388 if position.x < 0.0 {
4389 position.x = 0.0;
4390 }
4391 editor.set_scroll_position(position, cx);
4392 }
4393
4394 cx.stop_propagation();
4395 } else {
4396 editor.scroll_manager.set_is_dragging_scrollbar(
4397 Axis::Horizontal,
4398 false,
4399 cx,
4400 );
4401
4402 if hitbox.is_hovered(cx) {
4403 editor.scroll_manager.show_scrollbar(cx);
4404 }
4405 }
4406 mouse_position = event.position;
4407 })
4408 }
4409 });
4410
4411 if self
4412 .editor
4413 .read(cx)
4414 .scroll_manager
4415 .is_dragging_scrollbar(Axis::Horizontal)
4416 {
4417 cx.on_mouse_event({
4418 let editor = self.editor.clone();
4419 move |_: &MouseUpEvent, phase, cx| {
4420 if phase == DispatchPhase::Capture {
4421 return;
4422 }
4423
4424 editor.update(cx, |editor, cx| {
4425 editor.scroll_manager.set_is_dragging_scrollbar(
4426 Axis::Horizontal,
4427 false,
4428 cx,
4429 );
4430 cx.stop_propagation();
4431 });
4432 }
4433 });
4434 } else {
4435 cx.on_mouse_event({
4436 let editor = self.editor.clone();
4437
4438 move |event: &MouseDownEvent, phase, cx| {
4439 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4440 return;
4441 }
4442
4443 editor.update(cx, |editor, cx| {
4444 editor.scroll_manager.set_is_dragging_scrollbar(
4445 Axis::Horizontal,
4446 true,
4447 cx,
4448 );
4449
4450 let x = event.position.x;
4451
4452 if x < thumb_bounds.left() || thumb_bounds.right() < x {
4453 let center_row =
4454 ((x - hitbox.left()) / text_unit_size).round() as u32;
4455 let top_row = center_row.saturating_sub(
4456 (visible_range.end - visible_range.start) as u32 / 2,
4457 );
4458
4459 let mut position = editor.scroll_position(cx);
4460 position.x = top_row as f32;
4461
4462 editor.set_scroll_position(position, cx);
4463 } else {
4464 editor.scroll_manager.show_scrollbar(cx);
4465 }
4466
4467 cx.stop_propagation();
4468 });
4469 }
4470 });
4471 }
4472 }
4473
4474 if let Some(scrollbar_layout) = scrollbar_y {
4475 let hitbox = scrollbar_layout.hitbox.clone();
4476 let text_unit_size = scrollbar_layout.text_unit_size;
4477 let visible_range = scrollbar_layout.visible_range.clone();
4478 let thumb_bounds = scrollbar_layout.thumb_bounds();
4479
4480 if scrollbar_layout.visible {
4481 cx.paint_layer(hitbox.bounds, |cx| {
4482 cx.paint_quad(quad(
4483 hitbox.bounds,
4484 Corners::default(),
4485 cx.theme().colors().scrollbar_track_background,
4486 Edges {
4487 top: Pixels::ZERO,
4488 right: Pixels::ZERO,
4489 bottom: Pixels::ZERO,
4490 left: ScrollbarLayout::BORDER_WIDTH,
4491 },
4492 cx.theme().colors().scrollbar_track_border,
4493 ));
4494
4495 let fast_markers =
4496 self.collect_fast_scrollbar_markers(layout, &scrollbar_layout, cx);
4497 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
4498 self.refresh_slow_scrollbar_markers(layout, &scrollbar_layout, cx);
4499
4500 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
4501 for marker in markers.iter().chain(&fast_markers) {
4502 let mut marker = marker.clone();
4503 marker.bounds.origin += hitbox.origin;
4504 cx.paint_quad(marker);
4505 }
4506
4507 cx.paint_quad(quad(
4508 thumb_bounds,
4509 Corners::default(),
4510 cx.theme().colors().scrollbar_thumb_background,
4511 Edges {
4512 top: Pixels::ZERO,
4513 right: Pixels::ZERO,
4514 bottom: Pixels::ZERO,
4515 left: ScrollbarLayout::BORDER_WIDTH,
4516 },
4517 cx.theme().colors().scrollbar_thumb_border,
4518 ));
4519 });
4520 }
4521
4522 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4523
4524 cx.on_mouse_event({
4525 let editor = self.editor.clone();
4526
4527 let hitbox = hitbox.clone();
4528
4529 let mut mouse_position = cx.mouse_position();
4530 move |event: &MouseMoveEvent, phase, cx| {
4531 if phase == DispatchPhase::Capture {
4532 return;
4533 }
4534
4535 editor.update(cx, |editor, cx| {
4536 if event.pressed_button == Some(MouseButton::Left)
4537 && editor.scroll_manager.is_dragging_scrollbar(Axis::Vertical)
4538 {
4539 let y = mouse_position.y;
4540 let new_y = event.position.y;
4541 if (hitbox.top()..hitbox.bottom()).contains(&y) {
4542 let mut position = editor.scroll_position(cx);
4543 position.y += (new_y - y) / text_unit_size;
4544 if position.y < 0.0 {
4545 position.y = 0.0;
4546 }
4547 editor.set_scroll_position(position, cx);
4548 }
4549 } else {
4550 editor.scroll_manager.set_is_dragging_scrollbar(
4551 Axis::Vertical,
4552 false,
4553 cx,
4554 );
4555
4556 if hitbox.is_hovered(cx) {
4557 editor.scroll_manager.show_scrollbar(cx);
4558 }
4559 }
4560 mouse_position = event.position;
4561 })
4562 }
4563 });
4564
4565 if self
4566 .editor
4567 .read(cx)
4568 .scroll_manager
4569 .is_dragging_scrollbar(Axis::Vertical)
4570 {
4571 cx.on_mouse_event({
4572 let editor = self.editor.clone();
4573 move |_: &MouseUpEvent, phase, cx| {
4574 if phase == DispatchPhase::Capture {
4575 return;
4576 }
4577
4578 editor.update(cx, |editor, cx| {
4579 editor.scroll_manager.set_is_dragging_scrollbar(
4580 Axis::Vertical,
4581 false,
4582 cx,
4583 );
4584 cx.stop_propagation();
4585 });
4586 }
4587 });
4588 } else {
4589 cx.on_mouse_event({
4590 let editor = self.editor.clone();
4591
4592 move |event: &MouseDownEvent, phase, cx| {
4593 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4594 return;
4595 }
4596
4597 editor.update(cx, |editor, cx| {
4598 editor.scroll_manager.set_is_dragging_scrollbar(
4599 Axis::Vertical,
4600 true,
4601 cx,
4602 );
4603
4604 let y = event.position.y;
4605 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
4606 let center_row =
4607 ((y - hitbox.top()) / text_unit_size).round() as u32;
4608 let top_row = center_row.saturating_sub(
4609 (visible_range.end - visible_range.start) as u32 / 2,
4610 );
4611 let mut position = editor.scroll_position(cx);
4612 position.y = top_row as f32;
4613 editor.set_scroll_position(position, cx);
4614 } else {
4615 editor.scroll_manager.show_scrollbar(cx);
4616 }
4617
4618 cx.stop_propagation();
4619 });
4620 }
4621 });
4622 }
4623 }
4624 }
4625
4626 fn collect_fast_scrollbar_markers(
4627 &self,
4628 layout: &EditorLayout,
4629 scrollbar_layout: &ScrollbarLayout,
4630 cx: &mut WindowContext,
4631 ) -> Vec<PaintQuad> {
4632 const LIMIT: usize = 100;
4633 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
4634 return vec![];
4635 }
4636 let cursor_ranges = layout
4637 .cursors
4638 .iter()
4639 .map(|(point, color)| ColoredRange {
4640 start: point.row(),
4641 end: point.row(),
4642 color: *color,
4643 })
4644 .collect_vec();
4645 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
4646 }
4647
4648 fn refresh_slow_scrollbar_markers(
4649 &self,
4650 layout: &EditorLayout,
4651 scrollbar_layout: &ScrollbarLayout,
4652 cx: &mut WindowContext,
4653 ) {
4654 self.editor.update(cx, |editor, cx| {
4655 if !editor.is_singleton(cx)
4656 || !editor
4657 .scrollbar_marker_state
4658 .should_refresh(scrollbar_layout.hitbox.size)
4659 {
4660 return;
4661 }
4662
4663 let scrollbar_layout = scrollbar_layout.clone();
4664 let background_highlights = editor.background_highlights.clone();
4665 let snapshot = layout.position_map.snapshot.clone();
4666 let theme = cx.theme().clone();
4667 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
4668
4669 editor.scrollbar_marker_state.dirty = false;
4670 editor.scrollbar_marker_state.pending_refresh =
4671 Some(cx.spawn(|editor, mut cx| async move {
4672 let scrollbar_size = scrollbar_layout.hitbox.size;
4673 let scrollbar_markers = cx
4674 .background_executor()
4675 .spawn(async move {
4676 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
4677 let mut marker_quads = Vec::new();
4678 if scrollbar_settings.git_diff {
4679 let marker_row_ranges = snapshot
4680 .diff_map
4681 .diff_hunks(&snapshot.buffer_snapshot)
4682 .map(|hunk| {
4683 let start_display_row =
4684 MultiBufferPoint::new(hunk.row_range.start.0, 0)
4685 .to_display_point(&snapshot.display_snapshot)
4686 .row();
4687 let mut end_display_row =
4688 MultiBufferPoint::new(hunk.row_range.end.0, 0)
4689 .to_display_point(&snapshot.display_snapshot)
4690 .row();
4691 if end_display_row != start_display_row {
4692 end_display_row.0 -= 1;
4693 }
4694 let color = match hunk_status(&hunk) {
4695 DiffHunkStatus::Added => theme.status().created,
4696 DiffHunkStatus::Modified => theme.status().modified,
4697 DiffHunkStatus::Removed => theme.status().deleted,
4698 };
4699 ColoredRange {
4700 start: start_display_row,
4701 end: end_display_row,
4702 color,
4703 }
4704 });
4705
4706 marker_quads.extend(
4707 scrollbar_layout
4708 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
4709 );
4710 }
4711
4712 for (background_highlight_id, (_, background_ranges)) in
4713 background_highlights.iter()
4714 {
4715 let is_search_highlights = *background_highlight_id
4716 == TypeId::of::<BufferSearchHighlights>();
4717 let is_symbol_occurrences = *background_highlight_id
4718 == TypeId::of::<DocumentHighlightRead>()
4719 || *background_highlight_id
4720 == TypeId::of::<DocumentHighlightWrite>();
4721 if (is_search_highlights && scrollbar_settings.search_results)
4722 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
4723 {
4724 let mut color = theme.status().info;
4725 if is_symbol_occurrences {
4726 color.fade_out(0.5);
4727 }
4728 let marker_row_ranges = background_ranges.iter().map(|range| {
4729 let display_start = range
4730 .start
4731 .to_display_point(&snapshot.display_snapshot);
4732 let display_end =
4733 range.end.to_display_point(&snapshot.display_snapshot);
4734 ColoredRange {
4735 start: display_start.row(),
4736 end: display_end.row(),
4737 color,
4738 }
4739 });
4740 marker_quads.extend(
4741 scrollbar_layout
4742 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
4743 );
4744 }
4745 }
4746
4747 if scrollbar_settings.diagnostics != ScrollbarDiagnostics::None {
4748 let diagnostics = snapshot
4749 .buffer_snapshot
4750 .diagnostics_in_range(Point::zero()..max_point, false)
4751 .map(|DiagnosticEntry { diagnostic, range }| DiagnosticEntry {
4752 diagnostic,
4753 range: range.to_point(&snapshot.buffer_snapshot),
4754 })
4755 // Don't show diagnostics the user doesn't care about
4756 .filter(|diagnostic| {
4757 match (
4758 scrollbar_settings.diagnostics,
4759 diagnostic.diagnostic.severity,
4760 ) {
4761 (ScrollbarDiagnostics::All, _) => true,
4762 (
4763 ScrollbarDiagnostics::Error,
4764 DiagnosticSeverity::ERROR,
4765 ) => true,
4766 (
4767 ScrollbarDiagnostics::Warning,
4768 DiagnosticSeverity::ERROR
4769 | DiagnosticSeverity::WARNING,
4770 ) => true,
4771 (
4772 ScrollbarDiagnostics::Information,
4773 DiagnosticSeverity::ERROR
4774 | DiagnosticSeverity::WARNING
4775 | DiagnosticSeverity::INFORMATION,
4776 ) => true,
4777 (_, _) => false,
4778 }
4779 })
4780 // We want to sort by severity, in order to paint the most severe diagnostics last.
4781 .sorted_by_key(|diagnostic| {
4782 std::cmp::Reverse(diagnostic.diagnostic.severity)
4783 });
4784
4785 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
4786 let start_display = diagnostic
4787 .range
4788 .start
4789 .to_display_point(&snapshot.display_snapshot);
4790 let end_display = diagnostic
4791 .range
4792 .end
4793 .to_display_point(&snapshot.display_snapshot);
4794 let color = match diagnostic.diagnostic.severity {
4795 DiagnosticSeverity::ERROR => theme.status().error,
4796 DiagnosticSeverity::WARNING => theme.status().warning,
4797 DiagnosticSeverity::INFORMATION => theme.status().info,
4798 _ => theme.status().hint,
4799 };
4800 ColoredRange {
4801 start: start_display.row(),
4802 end: end_display.row(),
4803 color,
4804 }
4805 });
4806 marker_quads.extend(
4807 scrollbar_layout
4808 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
4809 );
4810 }
4811
4812 Arc::from(marker_quads)
4813 })
4814 .await;
4815
4816 editor.update(&mut cx, |editor, cx| {
4817 editor.scrollbar_marker_state.markers = scrollbar_markers;
4818 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
4819 editor.scrollbar_marker_state.pending_refresh = None;
4820 cx.notify();
4821 })?;
4822
4823 Ok(())
4824 }));
4825 });
4826 }
4827
4828 #[allow(clippy::too_many_arguments)]
4829 fn paint_highlighted_range(
4830 &self,
4831 range: Range<DisplayPoint>,
4832 color: Hsla,
4833 corner_radius: Pixels,
4834 line_end_overshoot: Pixels,
4835 layout: &EditorLayout,
4836 cx: &mut WindowContext,
4837 ) {
4838 let start_row = layout.visible_display_row_range.start;
4839 let end_row = layout.visible_display_row_range.end;
4840 if range.start != range.end {
4841 let row_range = if range.end.column() == 0 {
4842 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
4843 } else {
4844 cmp::max(range.start.row(), start_row)
4845 ..cmp::min(range.end.row().next_row(), end_row)
4846 };
4847
4848 let highlighted_range = HighlightedRange {
4849 color,
4850 line_height: layout.position_map.line_height,
4851 corner_radius,
4852 start_y: layout.content_origin.y
4853 + row_range.start.as_f32() * layout.position_map.line_height
4854 - layout.position_map.scroll_pixel_position.y,
4855 lines: row_range
4856 .iter_rows()
4857 .map(|row| {
4858 let line_layout =
4859 &layout.position_map.line_layouts[row.minus(start_row) as usize];
4860 HighlightedRangeLine {
4861 start_x: if row == range.start.row() {
4862 layout.content_origin.x
4863 + line_layout.x_for_index(range.start.column() as usize)
4864 - layout.position_map.scroll_pixel_position.x
4865 } else {
4866 layout.content_origin.x
4867 - layout.position_map.scroll_pixel_position.x
4868 },
4869 end_x: if row == range.end.row() {
4870 layout.content_origin.x
4871 + line_layout.x_for_index(range.end.column() as usize)
4872 - layout.position_map.scroll_pixel_position.x
4873 } else {
4874 layout.content_origin.x + line_layout.width + line_end_overshoot
4875 - layout.position_map.scroll_pixel_position.x
4876 },
4877 }
4878 })
4879 .collect(),
4880 };
4881
4882 highlighted_range.paint(layout.text_hitbox.bounds, cx);
4883 }
4884 }
4885
4886 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4887 if let Some(mut inline_blame) = layout.inline_blame.take() {
4888 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4889 inline_blame.paint(cx);
4890 })
4891 }
4892 }
4893
4894 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4895 for mut block in layout.blocks.drain(..) {
4896 block.element.paint(cx);
4897 }
4898 }
4899
4900 fn paint_inline_completion_popover(
4901 &mut self,
4902 layout: &mut EditorLayout,
4903 cx: &mut WindowContext,
4904 ) {
4905 if let Some(inline_completion_popover) = layout.inline_completion_popover.as_mut() {
4906 inline_completion_popover.paint(cx);
4907 }
4908 }
4909
4910 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4911 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
4912 mouse_context_menu.paint(cx);
4913 }
4914 }
4915
4916 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
4917 cx.on_mouse_event({
4918 let position_map = layout.position_map.clone();
4919 let editor = self.editor.clone();
4920 let hitbox = layout.hitbox.clone();
4921 let mut delta = ScrollDelta::default();
4922
4923 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
4924 // accidentally turn off their scrolling.
4925 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
4926
4927 move |event: &ScrollWheelEvent, phase, cx| {
4928 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
4929 delta = delta.coalesce(event.delta);
4930 editor.update(cx, |editor, cx| {
4931 let position_map: &PositionMap = &position_map;
4932
4933 let line_height = position_map.line_height;
4934 let max_glyph_width = position_map.em_width;
4935 let (delta, axis) = match delta {
4936 gpui::ScrollDelta::Pixels(mut pixels) => {
4937 //Trackpad
4938 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
4939 (pixels, axis)
4940 }
4941
4942 gpui::ScrollDelta::Lines(lines) => {
4943 //Not trackpad
4944 let pixels =
4945 point(lines.x * max_glyph_width, lines.y * line_height);
4946 (pixels, None)
4947 }
4948 };
4949
4950 let current_scroll_position = position_map.snapshot.scroll_position();
4951 let x = (current_scroll_position.x * max_glyph_width
4952 - (delta.x * scroll_sensitivity))
4953 / max_glyph_width;
4954 let y = (current_scroll_position.y * line_height
4955 - (delta.y * scroll_sensitivity))
4956 / line_height;
4957 let mut scroll_position =
4958 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
4959 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
4960 if forbid_vertical_scroll {
4961 scroll_position.y = current_scroll_position.y;
4962 }
4963
4964 if scroll_position != current_scroll_position {
4965 editor.scroll(scroll_position, axis, cx);
4966 cx.stop_propagation();
4967 } else if y < 0. {
4968 // Due to clamping, we may fail to detect cases of overscroll to the top;
4969 // We want the scroll manager to get an update in such cases and detect the change of direction
4970 // on the next frame.
4971 cx.notify();
4972 }
4973 });
4974 }
4975 }
4976 });
4977 }
4978
4979 fn paint_mouse_listeners(
4980 &mut self,
4981 layout: &EditorLayout,
4982 hovered_hunk: Option<HoveredHunk>,
4983 cx: &mut WindowContext,
4984 ) {
4985 self.paint_scroll_wheel_listener(layout, cx);
4986
4987 cx.on_mouse_event({
4988 let position_map = layout.position_map.clone();
4989 let editor = self.editor.clone();
4990 let text_hitbox = layout.text_hitbox.clone();
4991 let gutter_hitbox = layout.gutter_hitbox.clone();
4992 let line_numbers = layout.line_numbers.clone();
4993
4994 move |event: &MouseDownEvent, phase, cx| {
4995 if phase == DispatchPhase::Bubble {
4996 match event.button {
4997 MouseButton::Left => editor.update(cx, |editor, cx| {
4998 Self::mouse_left_down(
4999 editor,
5000 event,
5001 hovered_hunk.clone(),
5002 &position_map,
5003 &text_hitbox,
5004 &gutter_hitbox,
5005 line_numbers.as_ref(),
5006 cx,
5007 );
5008 }),
5009 MouseButton::Right => editor.update(cx, |editor, cx| {
5010 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
5011 }),
5012 MouseButton::Middle => editor.update(cx, |editor, cx| {
5013 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
5014 }),
5015 _ => {}
5016 };
5017 }
5018 }
5019 });
5020
5021 cx.on_mouse_event({
5022 let editor = self.editor.clone();
5023 let position_map = layout.position_map.clone();
5024 let text_hitbox = layout.text_hitbox.clone();
5025
5026 move |event: &MouseUpEvent, phase, cx| {
5027 if phase == DispatchPhase::Bubble {
5028 editor.update(cx, |editor, cx| {
5029 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
5030 });
5031 }
5032 }
5033 });
5034 cx.on_mouse_event({
5035 let position_map = layout.position_map.clone();
5036 let editor = self.editor.clone();
5037 let text_hitbox = layout.text_hitbox.clone();
5038 let gutter_hitbox = layout.gutter_hitbox.clone();
5039
5040 move |event: &MouseMoveEvent, phase, cx| {
5041 if phase == DispatchPhase::Bubble {
5042 editor.update(cx, |editor, cx| {
5043 if editor.hover_state.focused(cx) {
5044 return;
5045 }
5046 if event.pressed_button == Some(MouseButton::Left)
5047 || event.pressed_button == Some(MouseButton::Middle)
5048 {
5049 Self::mouse_dragged(
5050 editor,
5051 event,
5052 &position_map,
5053 text_hitbox.bounds,
5054 cx,
5055 )
5056 }
5057
5058 Self::mouse_moved(
5059 editor,
5060 event,
5061 &position_map,
5062 &text_hitbox,
5063 &gutter_hitbox,
5064 cx,
5065 )
5066 });
5067 }
5068 }
5069 });
5070 }
5071
5072 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
5073 bounds.top_right().x - self.style.scrollbar_width
5074 }
5075
5076 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
5077 let style = &self.style;
5078 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5079 let layout = cx
5080 .text_system()
5081 .shape_line(
5082 SharedString::from(" ".repeat(column)),
5083 font_size,
5084 &[TextRun {
5085 len: column,
5086 font: style.text.font(),
5087 color: Hsla::default(),
5088 background_color: None,
5089 underline: None,
5090 strikethrough: None,
5091 }],
5092 )
5093 .unwrap();
5094
5095 layout.width
5096 }
5097
5098 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
5099 let digit_count = (snapshot.widest_line_number() as f32).log10().floor() as usize + 1;
5100 self.column_pixels(digit_count, cx)
5101 }
5102
5103 fn shape_line_number(
5104 &self,
5105 text: SharedString,
5106 color: Hsla,
5107 cx: &WindowContext,
5108 ) -> anyhow::Result<ShapedLine> {
5109 let run = TextRun {
5110 len: text.len(),
5111 font: self.style.text.font(),
5112 color,
5113 background_color: None,
5114 underline: None,
5115 strikethrough: None,
5116 };
5117 cx.text_system().shape_line(
5118 text,
5119 self.style.text.font_size.to_pixels(cx.rem_size()),
5120 &[run],
5121 )
5122 }
5123}
5124
5125fn header_jump_data(
5126 snapshot: &EditorSnapshot,
5127 block_row_start: DisplayRow,
5128 height: u32,
5129 for_excerpt: &ExcerptInfo,
5130) -> JumpData {
5131 let range = &for_excerpt.range;
5132 let buffer = &for_excerpt.buffer;
5133 let jump_anchor = range
5134 .primary
5135 .as_ref()
5136 .map_or(range.context.start, |primary| primary.start);
5137
5138 let excerpt_start = range.context.start;
5139 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
5140 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
5141 0
5142 } else {
5143 let excerpt_start_row = language::ToPoint::to_point(&excerpt_start, buffer).row;
5144 jump_position.row - excerpt_start_row
5145 };
5146
5147 let line_offset_from_top = (block_row_start.0 + height + offset_from_excerpt_start)
5148 .saturating_sub(
5149 snapshot
5150 .scroll_anchor
5151 .scroll_position(&snapshot.display_snapshot)
5152 .y as u32,
5153 );
5154
5155 JumpData::MultiBufferPoint {
5156 excerpt_id: for_excerpt.id,
5157 anchor: jump_anchor,
5158 position: language::ToPoint::to_point(&jump_anchor, buffer),
5159 line_offset_from_top,
5160 }
5161}
5162
5163fn all_edits_insertions_or_deletions(
5164 edits: &Vec<(Range<Anchor>, String)>,
5165 snapshot: &MultiBufferSnapshot,
5166) -> bool {
5167 let mut all_insertions = true;
5168 let mut all_deletions = true;
5169
5170 for (range, new_text) in edits.iter() {
5171 let range_is_empty = range.to_offset(&snapshot).is_empty();
5172 let text_is_empty = new_text.is_empty();
5173
5174 if range_is_empty != text_is_empty {
5175 if range_is_empty {
5176 all_deletions = false;
5177 } else {
5178 all_insertions = false;
5179 }
5180 } else {
5181 return false;
5182 }
5183
5184 if !all_insertions && !all_deletions {
5185 return false;
5186 }
5187 }
5188 all_insertions || all_deletions
5189}
5190
5191#[allow(clippy::too_many_arguments)]
5192fn prepaint_gutter_button(
5193 button: IconButton,
5194 row: DisplayRow,
5195 line_height: Pixels,
5196 gutter_dimensions: &GutterDimensions,
5197 scroll_pixel_position: gpui::Point<Pixels>,
5198 gutter_hitbox: &Hitbox,
5199 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
5200 cx: &mut WindowContext,
5201) -> AnyElement {
5202 let mut button = button.into_any_element();
5203 let available_space = size(
5204 AvailableSpace::MinContent,
5205 AvailableSpace::Definite(line_height),
5206 );
5207 let indicator_size = button.layout_as_root(available_space, cx);
5208
5209 let blame_width = gutter_dimensions.git_blame_entries_width;
5210 let gutter_width = rows_with_hunk_bounds
5211 .get(&row)
5212 .map(|bounds| bounds.size.width);
5213 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
5214
5215 let mut x = left_offset;
5216 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
5217 - indicator_size.width
5218 - left_offset;
5219 x += available_width / 2.;
5220
5221 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
5222 y += (line_height - indicator_size.height) / 2.;
5223
5224 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
5225 button
5226}
5227
5228fn render_inline_blame_entry(
5229 blame: &gpui::Model<GitBlame>,
5230 blame_entry: BlameEntry,
5231 style: &EditorStyle,
5232 workspace: Option<WeakView<Workspace>>,
5233 cx: &mut WindowContext,
5234) -> AnyElement {
5235 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
5236
5237 let author = blame_entry.author.as_deref().unwrap_or_default();
5238 let summary_enabled = ProjectSettings::get_global(cx)
5239 .git
5240 .show_inline_commit_summary();
5241
5242 let text = match blame_entry.summary.as_ref() {
5243 Some(summary) if summary_enabled => {
5244 format!("{}, {} - {}", author, relative_timestamp, summary)
5245 }
5246 _ => format!("{}, {}", author, relative_timestamp),
5247 };
5248
5249 let details = blame.read(cx).details_for_entry(&blame_entry);
5250
5251 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
5252
5253 h_flex()
5254 .id("inline-blame")
5255 .w_full()
5256 .font_family(style.text.font().family)
5257 .text_color(cx.theme().status().hint)
5258 .line_height(style.text.line_height)
5259 .child(Icon::new(IconName::FileGit).color(Color::Hint))
5260 .child(text)
5261 .gap_2()
5262 .hoverable_tooltip(move |_| tooltip.clone().into())
5263 .into_any()
5264}
5265
5266fn render_blame_entry(
5267 ix: usize,
5268 blame: &gpui::Model<GitBlame>,
5269 blame_entry: BlameEntry,
5270 style: &EditorStyle,
5271 last_used_color: &mut Option<(PlayerColor, Oid)>,
5272 editor: View<Editor>,
5273 cx: &mut WindowContext,
5274) -> AnyElement {
5275 let mut sha_color = cx
5276 .theme()
5277 .players()
5278 .color_for_participant(blame_entry.sha.into());
5279 // If the last color we used is the same as the one we get for this line, but
5280 // the commit SHAs are different, then we try again to get a different color.
5281 match *last_used_color {
5282 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
5283 let index: u32 = blame_entry.sha.into();
5284 sha_color = cx.theme().players().color_for_participant(index + 1);
5285 }
5286 _ => {}
5287 };
5288 last_used_color.replace((sha_color, blame_entry.sha));
5289
5290 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
5291
5292 let short_commit_id = blame_entry.sha.display_short();
5293
5294 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
5295 let name = util::truncate_and_trailoff(author_name, GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED);
5296
5297 let details = blame.read(cx).details_for_entry(&blame_entry);
5298
5299 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
5300
5301 let tooltip = cx.new_view(|_| {
5302 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
5303 });
5304
5305 h_flex()
5306 .w_full()
5307 .justify_between()
5308 .font_family(style.text.font().family)
5309 .line_height(style.text.line_height)
5310 .id(("blame", ix))
5311 .text_color(cx.theme().status().hint)
5312 .pr_2()
5313 .gap_2()
5314 .child(
5315 h_flex()
5316 .items_center()
5317 .gap_2()
5318 .child(div().text_color(sha_color.cursor).child(short_commit_id))
5319 .child(name),
5320 )
5321 .child(relative_timestamp)
5322 .on_mouse_down(MouseButton::Right, {
5323 let blame_entry = blame_entry.clone();
5324 let details = details.clone();
5325 move |event, cx| {
5326 deploy_blame_entry_context_menu(
5327 &blame_entry,
5328 details.as_ref(),
5329 editor.clone(),
5330 event.position,
5331 cx,
5332 );
5333 }
5334 })
5335 .hover(|style| style.bg(cx.theme().colors().element_hover))
5336 .when_some(
5337 details.and_then(|details| details.permalink),
5338 |this, url| {
5339 let url = url.clone();
5340 this.cursor_pointer().on_click(move |_, cx| {
5341 cx.stop_propagation();
5342 cx.open_url(url.as_str())
5343 })
5344 },
5345 )
5346 .hoverable_tooltip(move |_| tooltip.clone().into())
5347 .into_any()
5348}
5349
5350fn deploy_blame_entry_context_menu(
5351 blame_entry: &BlameEntry,
5352 details: Option<&CommitDetails>,
5353 editor: View<Editor>,
5354 position: gpui::Point<Pixels>,
5355 cx: &mut WindowContext,
5356) {
5357 let context_menu = ContextMenu::build(cx, move |menu, _| {
5358 let sha = format!("{}", blame_entry.sha);
5359 menu.on_blur_subscription(Subscription::new(|| {}))
5360 .entry("Copy commit SHA", None, move |cx| {
5361 cx.write_to_clipboard(ClipboardItem::new_string(sha.clone()));
5362 })
5363 .when_some(
5364 details.and_then(|details| details.permalink.clone()),
5365 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
5366 )
5367 });
5368
5369 editor.update(cx, move |editor, cx| {
5370 editor.mouse_context_menu = Some(MouseContextMenu::new(
5371 MenuPosition::PinnedToScreen(position),
5372 context_menu,
5373 cx,
5374 ));
5375 cx.notify();
5376 });
5377}
5378
5379#[derive(Debug)]
5380pub(crate) struct LineWithInvisibles {
5381 fragments: SmallVec<[LineFragment; 1]>,
5382 invisibles: Vec<Invisible>,
5383 len: usize,
5384 width: Pixels,
5385 font_size: Pixels,
5386}
5387
5388#[allow(clippy::large_enum_variant)]
5389enum LineFragment {
5390 Text(ShapedLine),
5391 Element {
5392 element: Option<AnyElement>,
5393 size: Size<Pixels>,
5394 len: usize,
5395 },
5396}
5397
5398impl fmt::Debug for LineFragment {
5399 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
5400 match self {
5401 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
5402 LineFragment::Element { size, len, .. } => f
5403 .debug_struct("Element")
5404 .field("size", size)
5405 .field("len", len)
5406 .finish(),
5407 }
5408 }
5409}
5410
5411impl LineWithInvisibles {
5412 #[allow(clippy::too_many_arguments)]
5413 fn from_chunks<'a>(
5414 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
5415 editor_style: &EditorStyle,
5416 max_line_len: usize,
5417 max_line_count: usize,
5418 editor_mode: EditorMode,
5419 text_width: Pixels,
5420 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
5421 cx: &mut WindowContext,
5422 ) -> Vec<Self> {
5423 let text_style = &editor_style.text;
5424 let mut layouts = Vec::with_capacity(max_line_count);
5425 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
5426 let mut line = String::new();
5427 let mut invisibles = Vec::new();
5428 let mut width = Pixels::ZERO;
5429 let mut len = 0;
5430 let mut styles = Vec::new();
5431 let mut non_whitespace_added = false;
5432 let mut row = 0;
5433 let mut line_exceeded_max_len = false;
5434 let font_size = text_style.font_size.to_pixels(cx.rem_size());
5435
5436 let ellipsis = SharedString::from("⋯");
5437
5438 for highlighted_chunk in chunks.chain([HighlightedChunk {
5439 text: "\n",
5440 style: None,
5441 is_tab: false,
5442 replacement: None,
5443 }]) {
5444 if let Some(replacement) = highlighted_chunk.replacement {
5445 if !line.is_empty() {
5446 let shaped_line = cx
5447 .text_system()
5448 .shape_line(line.clone().into(), font_size, &styles)
5449 .unwrap();
5450 width += shaped_line.width;
5451 len += shaped_line.len;
5452 fragments.push(LineFragment::Text(shaped_line));
5453 line.clear();
5454 styles.clear();
5455 }
5456
5457 match replacement {
5458 ChunkReplacement::Renderer(renderer) => {
5459 let available_width = if renderer.constrain_width {
5460 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
5461 ellipsis.clone()
5462 } else {
5463 SharedString::from(Arc::from(highlighted_chunk.text))
5464 };
5465 let shaped_line = cx
5466 .text_system()
5467 .shape_line(
5468 chunk,
5469 font_size,
5470 &[text_style.to_run(highlighted_chunk.text.len())],
5471 )
5472 .unwrap();
5473 AvailableSpace::Definite(shaped_line.width)
5474 } else {
5475 AvailableSpace::MinContent
5476 };
5477
5478 let mut element = (renderer.render)(&mut ChunkRendererContext {
5479 context: cx,
5480 max_width: text_width,
5481 });
5482 let line_height = text_style.line_height_in_pixels(cx.rem_size());
5483 let size = element.layout_as_root(
5484 size(available_width, AvailableSpace::Definite(line_height)),
5485 cx,
5486 );
5487
5488 width += size.width;
5489 len += highlighted_chunk.text.len();
5490 fragments.push(LineFragment::Element {
5491 element: Some(element),
5492 size,
5493 len: highlighted_chunk.text.len(),
5494 });
5495 }
5496 ChunkReplacement::Str(x) => {
5497 let text_style = if let Some(style) = highlighted_chunk.style {
5498 Cow::Owned(text_style.clone().highlight(style))
5499 } else {
5500 Cow::Borrowed(text_style)
5501 };
5502
5503 let run = TextRun {
5504 len: x.len(),
5505 font: text_style.font(),
5506 color: text_style.color,
5507 background_color: text_style.background_color,
5508 underline: text_style.underline,
5509 strikethrough: text_style.strikethrough,
5510 };
5511 let line_layout = cx
5512 .text_system()
5513 .shape_line(x, font_size, &[run])
5514 .unwrap()
5515 .with_len(highlighted_chunk.text.len());
5516
5517 width += line_layout.width;
5518 len += highlighted_chunk.text.len();
5519 fragments.push(LineFragment::Text(line_layout))
5520 }
5521 }
5522 } else {
5523 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
5524 if ix > 0 {
5525 let shaped_line = cx
5526 .text_system()
5527 .shape_line(line.clone().into(), font_size, &styles)
5528 .unwrap();
5529 width += shaped_line.width;
5530 len += shaped_line.len;
5531 fragments.push(LineFragment::Text(shaped_line));
5532 layouts.push(Self {
5533 width: mem::take(&mut width),
5534 len: mem::take(&mut len),
5535 fragments: mem::take(&mut fragments),
5536 invisibles: std::mem::take(&mut invisibles),
5537 font_size,
5538 });
5539
5540 line.clear();
5541 styles.clear();
5542 row += 1;
5543 line_exceeded_max_len = false;
5544 non_whitespace_added = false;
5545 if row == max_line_count {
5546 return layouts;
5547 }
5548 }
5549
5550 if !line_chunk.is_empty() && !line_exceeded_max_len {
5551 let text_style = if let Some(style) = highlighted_chunk.style {
5552 Cow::Owned(text_style.clone().highlight(style))
5553 } else {
5554 Cow::Borrowed(text_style)
5555 };
5556
5557 if line.len() + line_chunk.len() > max_line_len {
5558 let mut chunk_len = max_line_len - line.len();
5559 while !line_chunk.is_char_boundary(chunk_len) {
5560 chunk_len -= 1;
5561 }
5562 line_chunk = &line_chunk[..chunk_len];
5563 line_exceeded_max_len = true;
5564 }
5565
5566 styles.push(TextRun {
5567 len: line_chunk.len(),
5568 font: text_style.font(),
5569 color: text_style.color,
5570 background_color: text_style.background_color,
5571 underline: text_style.underline,
5572 strikethrough: text_style.strikethrough,
5573 });
5574
5575 if editor_mode == EditorMode::Full {
5576 // Line wrap pads its contents with fake whitespaces,
5577 // avoid printing them
5578 let is_soft_wrapped = is_row_soft_wrapped(row);
5579 if highlighted_chunk.is_tab {
5580 if non_whitespace_added || !is_soft_wrapped {
5581 invisibles.push(Invisible::Tab {
5582 line_start_offset: line.len(),
5583 line_end_offset: line.len() + line_chunk.len(),
5584 });
5585 }
5586 } else {
5587 invisibles.extend(line_chunk.char_indices().filter_map(
5588 |(index, c)| {
5589 let is_whitespace = c.is_whitespace();
5590 non_whitespace_added |= !is_whitespace;
5591 if is_whitespace
5592 && (non_whitespace_added || !is_soft_wrapped)
5593 {
5594 Some(Invisible::Whitespace {
5595 line_offset: line.len() + index,
5596 })
5597 } else {
5598 None
5599 }
5600 },
5601 ))
5602 }
5603 }
5604
5605 line.push_str(line_chunk);
5606 }
5607 }
5608 }
5609 }
5610
5611 layouts
5612 }
5613
5614 fn prepaint(
5615 &mut self,
5616 line_height: Pixels,
5617 scroll_pixel_position: gpui::Point<Pixels>,
5618 row: DisplayRow,
5619 content_origin: gpui::Point<Pixels>,
5620 line_elements: &mut SmallVec<[AnyElement; 1]>,
5621 cx: &mut WindowContext,
5622 ) {
5623 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
5624 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
5625 for fragment in &mut self.fragments {
5626 match fragment {
5627 LineFragment::Text(line) => {
5628 fragment_origin.x += line.width;
5629 }
5630 LineFragment::Element { element, size, .. } => {
5631 let mut element = element
5632 .take()
5633 .expect("you can't prepaint LineWithInvisibles twice");
5634
5635 // Center the element vertically within the line.
5636 let mut element_origin = fragment_origin;
5637 element_origin.y += (line_height - size.height) / 2.;
5638 element.prepaint_at(element_origin, cx);
5639 line_elements.push(element);
5640
5641 fragment_origin.x += size.width;
5642 }
5643 }
5644 }
5645 }
5646
5647 fn draw(
5648 &self,
5649 layout: &EditorLayout,
5650 row: DisplayRow,
5651 content_origin: gpui::Point<Pixels>,
5652 whitespace_setting: ShowWhitespaceSetting,
5653 selection_ranges: &[Range<DisplayPoint>],
5654 cx: &mut WindowContext,
5655 ) {
5656 let line_height = layout.position_map.line_height;
5657 let line_y = line_height
5658 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
5659
5660 let mut fragment_origin =
5661 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
5662
5663 for fragment in &self.fragments {
5664 match fragment {
5665 LineFragment::Text(line) => {
5666 line.paint(fragment_origin, line_height, cx).log_err();
5667 fragment_origin.x += line.width;
5668 }
5669 LineFragment::Element { size, .. } => {
5670 fragment_origin.x += size.width;
5671 }
5672 }
5673 }
5674
5675 self.draw_invisibles(
5676 selection_ranges,
5677 layout,
5678 content_origin,
5679 line_y,
5680 row,
5681 line_height,
5682 whitespace_setting,
5683 cx,
5684 );
5685 }
5686
5687 #[allow(clippy::too_many_arguments)]
5688 fn draw_invisibles(
5689 &self,
5690 selection_ranges: &[Range<DisplayPoint>],
5691 layout: &EditorLayout,
5692 content_origin: gpui::Point<Pixels>,
5693 line_y: Pixels,
5694 row: DisplayRow,
5695 line_height: Pixels,
5696 whitespace_setting: ShowWhitespaceSetting,
5697 cx: &mut WindowContext,
5698 ) {
5699 let extract_whitespace_info = |invisible: &Invisible| {
5700 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
5701 Invisible::Tab {
5702 line_start_offset,
5703 line_end_offset,
5704 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
5705 Invisible::Whitespace { line_offset } => {
5706 (*line_offset, line_offset + 1, &layout.space_invisible)
5707 }
5708 };
5709
5710 let x_offset = self.x_for_index(token_offset);
5711 let invisible_offset =
5712 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
5713 let origin = content_origin
5714 + gpui::point(
5715 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
5716 line_y,
5717 );
5718
5719 (
5720 [token_offset, token_end_offset],
5721 Box::new(move |cx: &mut WindowContext| {
5722 invisible_symbol.paint(origin, line_height, cx).log_err();
5723 }),
5724 )
5725 };
5726
5727 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
5728 match whitespace_setting {
5729 ShowWhitespaceSetting::None => (),
5730 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
5731 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
5732 let invisible_point = DisplayPoint::new(row, start as u32);
5733 if !selection_ranges
5734 .iter()
5735 .any(|region| region.start <= invisible_point && invisible_point < region.end)
5736 {
5737 return;
5738 }
5739
5740 paint(cx);
5741 }),
5742
5743 // For a whitespace to be on a boundary, any of the following conditions need to be met:
5744 // - It is a tab
5745 // - It is adjacent to an edge (start or end)
5746 // - It is adjacent to a whitespace (left or right)
5747 ShowWhitespaceSetting::Boundary => {
5748 // 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
5749 // the above cases.
5750 // Note: We zip in the original `invisibles` to check for tab equality
5751 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
5752 for (([start, end], paint), invisible) in
5753 invisible_iter.zip_eq(self.invisibles.iter())
5754 {
5755 let should_render = match (&last_seen, invisible) {
5756 (_, Invisible::Tab { .. }) => true,
5757 (Some((_, last_end, _)), _) => *last_end == start,
5758 _ => false,
5759 };
5760
5761 if should_render || start == 0 || end == self.len {
5762 paint(cx);
5763
5764 // Since we are scanning from the left, we will skip over the first available whitespace that is part
5765 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
5766 if let Some((should_render_last, last_end, paint_last)) = last_seen {
5767 // Note that we need to make sure that the last one is actually adjacent
5768 if !should_render_last && last_end == start {
5769 paint_last(cx);
5770 }
5771 }
5772 }
5773
5774 // Manually render anything within a selection
5775 let invisible_point = DisplayPoint::new(row, start as u32);
5776 if selection_ranges.iter().any(|region| {
5777 region.start <= invisible_point && invisible_point < region.end
5778 }) {
5779 paint(cx);
5780 }
5781
5782 last_seen = Some((should_render, end, paint));
5783 }
5784 }
5785 }
5786 }
5787
5788 pub fn x_for_index(&self, index: usize) -> Pixels {
5789 let mut fragment_start_x = Pixels::ZERO;
5790 let mut fragment_start_index = 0;
5791
5792 for fragment in &self.fragments {
5793 match fragment {
5794 LineFragment::Text(shaped_line) => {
5795 let fragment_end_index = fragment_start_index + shaped_line.len;
5796 if index < fragment_end_index {
5797 return fragment_start_x
5798 + shaped_line.x_for_index(index - fragment_start_index);
5799 }
5800 fragment_start_x += shaped_line.width;
5801 fragment_start_index = fragment_end_index;
5802 }
5803 LineFragment::Element { len, size, .. } => {
5804 let fragment_end_index = fragment_start_index + len;
5805 if index < fragment_end_index {
5806 return fragment_start_x;
5807 }
5808 fragment_start_x += size.width;
5809 fragment_start_index = fragment_end_index;
5810 }
5811 }
5812 }
5813
5814 fragment_start_x
5815 }
5816
5817 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
5818 let mut fragment_start_x = Pixels::ZERO;
5819 let mut fragment_start_index = 0;
5820
5821 for fragment in &self.fragments {
5822 match fragment {
5823 LineFragment::Text(shaped_line) => {
5824 let fragment_end_x = fragment_start_x + shaped_line.width;
5825 if x < fragment_end_x {
5826 return Some(
5827 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
5828 );
5829 }
5830 fragment_start_x = fragment_end_x;
5831 fragment_start_index += shaped_line.len;
5832 }
5833 LineFragment::Element { len, size, .. } => {
5834 let fragment_end_x = fragment_start_x + size.width;
5835 if x < fragment_end_x {
5836 return Some(fragment_start_index);
5837 }
5838 fragment_start_index += len;
5839 fragment_start_x = fragment_end_x;
5840 }
5841 }
5842 }
5843
5844 None
5845 }
5846
5847 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
5848 let mut fragment_start_index = 0;
5849
5850 for fragment in &self.fragments {
5851 match fragment {
5852 LineFragment::Text(shaped_line) => {
5853 let fragment_end_index = fragment_start_index + shaped_line.len;
5854 if index < fragment_end_index {
5855 return shaped_line.font_id_for_index(index - fragment_start_index);
5856 }
5857 fragment_start_index = fragment_end_index;
5858 }
5859 LineFragment::Element { len, .. } => {
5860 let fragment_end_index = fragment_start_index + len;
5861 if index < fragment_end_index {
5862 return None;
5863 }
5864 fragment_start_index = fragment_end_index;
5865 }
5866 }
5867 }
5868
5869 None
5870 }
5871}
5872
5873#[derive(Debug, Clone, Copy, PartialEq, Eq)]
5874enum Invisible {
5875 /// A tab character
5876 ///
5877 /// A tab character is internally represented by spaces (configured by the user's tab width)
5878 /// aligned to the nearest column, so it's necessary to store the start and end offset for
5879 /// adjacency checks.
5880 Tab {
5881 line_start_offset: usize,
5882 line_end_offset: usize,
5883 },
5884 Whitespace {
5885 line_offset: usize,
5886 },
5887}
5888
5889impl EditorElement {
5890 /// Returns the rem size to use when rendering the [`EditorElement`].
5891 ///
5892 /// This allows UI elements to scale based on the `buffer_font_size`.
5893 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
5894 match self.editor.read(cx).mode {
5895 EditorMode::Full => {
5896 let buffer_font_size = self.style.text.font_size;
5897 match buffer_font_size {
5898 AbsoluteLength::Pixels(pixels) => {
5899 let rem_size_scale = {
5900 // Our default UI font size is 14px on a 16px base scale.
5901 // This means the default UI font size is 0.875rems.
5902 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
5903
5904 // We then determine the delta between a single rem and the default font
5905 // size scale.
5906 let default_font_size_delta = 1. - default_font_size_scale;
5907
5908 // Finally, we add this delta to 1rem to get the scale factor that
5909 // should be used to scale up the UI.
5910 1. + default_font_size_delta
5911 };
5912
5913 Some(pixels * rem_size_scale)
5914 }
5915 AbsoluteLength::Rems(rems) => {
5916 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
5917 }
5918 }
5919 }
5920 // We currently use single-line and auto-height editors in UI contexts,
5921 // so we don't want to scale everything with the buffer font size, as it
5922 // ends up looking off.
5923 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
5924 }
5925 }
5926}
5927
5928impl Element for EditorElement {
5929 type RequestLayoutState = ();
5930 type PrepaintState = EditorLayout;
5931
5932 fn id(&self) -> Option<ElementId> {
5933 None
5934 }
5935
5936 fn request_layout(
5937 &mut self,
5938 _: Option<&GlobalElementId>,
5939 cx: &mut WindowContext,
5940 ) -> (gpui::LayoutId, ()) {
5941 let rem_size = self.rem_size(cx);
5942 cx.with_rem_size(rem_size, |cx| {
5943 self.editor.update(cx, |editor, cx| {
5944 editor.set_style(self.style.clone(), cx);
5945
5946 let layout_id = match editor.mode {
5947 EditorMode::SingleLine { auto_width } => {
5948 let rem_size = cx.rem_size();
5949
5950 let height = self.style.text.line_height_in_pixels(rem_size);
5951 if auto_width {
5952 let editor_handle = cx.view().clone();
5953 let style = self.style.clone();
5954 cx.request_measured_layout(Style::default(), move |_, _, cx| {
5955 let editor_snapshot =
5956 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
5957 let line = Self::layout_lines(
5958 DisplayRow(0)..DisplayRow(1),
5959 &editor_snapshot,
5960 &style,
5961 px(f32::MAX),
5962 |_| false, // Single lines never soft wrap
5963 cx,
5964 )
5965 .pop()
5966 .unwrap();
5967
5968 let font_id = cx.text_system().resolve_font(&style.text.font());
5969 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5970 let em_width = cx
5971 .text_system()
5972 .typographic_bounds(font_id, font_size, 'm')
5973 .unwrap()
5974 .size
5975 .width;
5976
5977 size(line.width + em_width, height)
5978 })
5979 } else {
5980 let mut style = Style::default();
5981 style.size.height = height.into();
5982 style.size.width = relative(1.).into();
5983 cx.request_layout(style, None)
5984 }
5985 }
5986 EditorMode::AutoHeight { max_lines } => {
5987 let editor_handle = cx.view().clone();
5988 let max_line_number_width =
5989 self.max_line_number_width(&editor.snapshot(cx), cx);
5990 cx.request_measured_layout(
5991 Style::default(),
5992 move |known_dimensions, available_space, cx| {
5993 editor_handle
5994 .update(cx, |editor, cx| {
5995 compute_auto_height_layout(
5996 editor,
5997 max_lines,
5998 max_line_number_width,
5999 known_dimensions,
6000 available_space.width,
6001 cx,
6002 )
6003 })
6004 .unwrap_or_default()
6005 },
6006 )
6007 }
6008 EditorMode::Full => {
6009 let mut style = Style::default();
6010 style.size.width = relative(1.).into();
6011 style.size.height = relative(1.).into();
6012 cx.request_layout(style, None)
6013 }
6014 };
6015
6016 (layout_id, ())
6017 })
6018 })
6019 }
6020
6021 fn prepaint(
6022 &mut self,
6023 _: Option<&GlobalElementId>,
6024 bounds: Bounds<Pixels>,
6025 _: &mut Self::RequestLayoutState,
6026 cx: &mut WindowContext,
6027 ) -> Self::PrepaintState {
6028 let text_style = TextStyleRefinement {
6029 font_size: Some(self.style.text.font_size),
6030 line_height: Some(self.style.text.line_height),
6031 ..Default::default()
6032 };
6033 let focus_handle = self.editor.focus_handle(cx);
6034 cx.set_view_id(self.editor.entity_id());
6035 cx.set_focus_handle(&focus_handle);
6036
6037 let rem_size = self.rem_size(cx);
6038 cx.with_rem_size(rem_size, |cx| {
6039 cx.with_text_style(Some(text_style), |cx| {
6040 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
6041 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
6042 let style = self.style.clone();
6043
6044 let font_id = cx.text_system().resolve_font(&style.text.font());
6045 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6046 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6047 let em_width = cx
6048 .text_system()
6049 .typographic_bounds(font_id, font_size, 'm')
6050 .unwrap()
6051 .size
6052 .width;
6053 let em_advance = cx
6054 .text_system()
6055 .advance(font_id, font_size, 'm')
6056 .unwrap()
6057 .width;
6058
6059 let letter_size = size(em_width, line_height);
6060
6061 let gutter_dimensions = snapshot.gutter_dimensions(
6062 font_id,
6063 font_size,
6064 em_width,
6065 em_advance,
6066 self.max_line_number_width(&snapshot, cx),
6067 cx,
6068 );
6069 let text_width = bounds.size.width - gutter_dimensions.width;
6070
6071 let editor_width = text_width - gutter_dimensions.margin - em_width;
6072
6073 snapshot = self.editor.update(cx, |editor, cx| {
6074 editor.last_bounds = Some(bounds);
6075 editor.gutter_dimensions = gutter_dimensions;
6076 editor.set_visible_line_count(bounds.size.height / line_height, cx);
6077
6078 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
6079 snapshot
6080 } else {
6081 let wrap_width = match editor.soft_wrap_mode(cx) {
6082 SoftWrap::GitDiff => None,
6083 SoftWrap::None => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
6084 SoftWrap::EditorWidth => Some(editor_width),
6085 SoftWrap::Column(column) => Some(column as f32 * em_advance),
6086 SoftWrap::Bounded(column) => {
6087 Some(editor_width.min(column as f32 * em_advance))
6088 }
6089 };
6090
6091 if editor.set_wrap_width(wrap_width, cx) {
6092 editor.snapshot(cx)
6093 } else {
6094 snapshot
6095 }
6096 }
6097 });
6098
6099 let wrap_guides = self
6100 .editor
6101 .read(cx)
6102 .wrap_guides(cx)
6103 .iter()
6104 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
6105 .collect::<SmallVec<[_; 2]>>();
6106
6107 let hitbox = cx.insert_hitbox(bounds, false);
6108 let gutter_hitbox =
6109 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
6110 let text_hitbox = cx.insert_hitbox(
6111 Bounds {
6112 origin: gutter_hitbox.top_right(),
6113 size: size(text_width, bounds.size.height),
6114 },
6115 false,
6116 );
6117 // Offset the content_bounds from the text_bounds by the gutter margin (which
6118 // is roughly half a character wide) to make hit testing work more like how we want.
6119 let content_origin =
6120 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
6121
6122 let scrollbar_bounds =
6123 Bounds::from_corners(content_origin, bounds.bottom_right());
6124
6125 let height_in_lines = scrollbar_bounds.size.height / line_height;
6126
6127 // NOTE: The max row number in the current file, minus one
6128 let max_row = snapshot.max_point().row().as_f32();
6129
6130 // NOTE: The max scroll position for the top of the window
6131 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
6132 (max_row - height_in_lines + 1.).max(0.)
6133 } else {
6134 let settings = EditorSettings::get_global(cx);
6135 match settings.scroll_beyond_last_line {
6136 ScrollBeyondLastLine::OnePage => max_row,
6137 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
6138 ScrollBeyondLastLine::VerticalScrollMargin => {
6139 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
6140 .max(0.)
6141 }
6142 }
6143 };
6144
6145 // TODO: Autoscrolling for both axes
6146 let mut autoscroll_request = None;
6147 let mut autoscroll_containing_element = false;
6148 let mut autoscroll_horizontally = false;
6149 self.editor.update(cx, |editor, cx| {
6150 autoscroll_request = editor.autoscroll_request();
6151 autoscroll_containing_element =
6152 autoscroll_request.is_some() || editor.has_pending_selection();
6153 // TODO: Is this horizontal or vertical?!
6154 autoscroll_horizontally =
6155 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
6156 snapshot = editor.snapshot(cx);
6157 });
6158
6159 let mut scroll_position = snapshot.scroll_position();
6160 // The scroll position is a fractional point, the whole number of which represents
6161 // the top of the window in terms of display rows.
6162 let start_row = DisplayRow(scroll_position.y as u32);
6163 let max_row = snapshot.max_point().row();
6164 let end_row = cmp::min(
6165 (scroll_position.y + height_in_lines).ceil() as u32,
6166 max_row.next_row().0,
6167 );
6168 let end_row = DisplayRow(end_row);
6169
6170 let buffer_rows = snapshot
6171 .buffer_rows(start_row)
6172 .take((start_row..end_row).len())
6173 .collect::<Vec<_>>();
6174 let is_row_soft_wrapped =
6175 |row| buffer_rows.get(row).copied().flatten().is_none();
6176
6177 let start_anchor = if start_row == Default::default() {
6178 Anchor::min()
6179 } else {
6180 snapshot.buffer_snapshot.anchor_before(
6181 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
6182 )
6183 };
6184 let end_anchor = if end_row > max_row {
6185 Anchor::max()
6186 } else {
6187 snapshot.buffer_snapshot.anchor_before(
6188 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
6189 )
6190 };
6191
6192 let highlighted_rows = self
6193 .editor
6194 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
6195 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
6196 start_anchor..end_anchor,
6197 &snapshot.display_snapshot,
6198 cx.theme().colors(),
6199 );
6200 let highlighted_gutter_ranges =
6201 self.editor.read(cx).gutter_highlights_in_range(
6202 start_anchor..end_anchor,
6203 &snapshot.display_snapshot,
6204 cx,
6205 );
6206
6207 let redacted_ranges = self.editor.read(cx).redacted_ranges(
6208 start_anchor..end_anchor,
6209 &snapshot.display_snapshot,
6210 cx,
6211 );
6212
6213 let (local_selections, selected_buffer_ids): (
6214 Vec<Selection<Point>>,
6215 Vec<BufferId>,
6216 ) = self.editor.update(cx, |editor, cx| {
6217 let all_selections = editor.selections.all::<Point>(cx);
6218 let selected_buffer_ids = if editor.is_singleton(cx) {
6219 Vec::new()
6220 } else {
6221 let mut selected_buffer_ids = Vec::with_capacity(all_selections.len());
6222
6223 for selection in all_selections {
6224 for buffer_id in snapshot
6225 .buffer_snapshot
6226 .buffer_ids_in_selected_rows(selection)
6227 {
6228 if selected_buffer_ids.last() != Some(&buffer_id) {
6229 selected_buffer_ids.push(buffer_id);
6230 }
6231 }
6232 }
6233
6234 selected_buffer_ids
6235 };
6236
6237 let mut selections = editor
6238 .selections
6239 .disjoint_in_range(start_anchor..end_anchor, cx);
6240 selections.extend(editor.selections.pending(cx));
6241
6242 (selections, selected_buffer_ids)
6243 });
6244
6245 let (selections, active_rows, newest_selection_head) = self.layout_selections(
6246 start_anchor,
6247 end_anchor,
6248 &local_selections,
6249 &snapshot,
6250 start_row,
6251 end_row,
6252 cx,
6253 );
6254
6255 let line_numbers = self.layout_line_numbers(
6256 Some(&gutter_hitbox),
6257 gutter_dimensions,
6258 line_height,
6259 scroll_position,
6260 start_row..end_row,
6261 buffer_rows.iter().copied(),
6262 &active_rows,
6263 newest_selection_head,
6264 &snapshot,
6265 cx,
6266 );
6267
6268 let mut crease_toggles = cx.with_element_namespace("crease_toggles", |cx| {
6269 self.layout_crease_toggles(
6270 start_row..end_row,
6271 buffer_rows.iter().copied(),
6272 &active_rows,
6273 &snapshot,
6274 cx,
6275 )
6276 });
6277 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
6278 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
6279 });
6280
6281 let display_hunks = self.layout_gutter_git_hunks(
6282 line_height,
6283 &gutter_hitbox,
6284 start_row..end_row,
6285 start_anchor..end_anchor,
6286 &snapshot,
6287 cx,
6288 );
6289
6290 let mut max_visible_line_width = Pixels::ZERO;
6291 let mut line_layouts = Self::layout_lines(
6292 start_row..end_row,
6293 &snapshot,
6294 &self.style,
6295 editor_width,
6296 is_row_soft_wrapped,
6297 cx,
6298 );
6299 for line_with_invisibles in &line_layouts {
6300 if line_with_invisibles.width > max_visible_line_width {
6301 max_visible_line_width = line_with_invisibles.width;
6302 }
6303 }
6304
6305 let longest_line_width = layout_line(
6306 snapshot.longest_row(),
6307 &snapshot,
6308 &style,
6309 editor_width,
6310 is_row_soft_wrapped,
6311 cx,
6312 )
6313 .width;
6314
6315 let scrollbar_range_data = ScrollbarRangeData::new(
6316 scrollbar_bounds,
6317 letter_size,
6318 &snapshot,
6319 longest_line_width,
6320 &style,
6321 cx,
6322 );
6323
6324 let scroll_range_bounds = scrollbar_range_data.scroll_range;
6325 let mut scroll_width = scroll_range_bounds.size.width;
6326
6327 let sticky_header_excerpt = if snapshot.buffer_snapshot.show_headers() {
6328 snapshot.sticky_header_excerpt(start_row)
6329 } else {
6330 None
6331 };
6332 let sticky_header_excerpt_id =
6333 sticky_header_excerpt.as_ref().map(|top| top.excerpt.id);
6334
6335 let blocks = cx.with_element_namespace("blocks", |cx| {
6336 self.render_blocks(
6337 start_row..end_row,
6338 &snapshot,
6339 &hitbox,
6340 &text_hitbox,
6341 editor_width,
6342 &mut scroll_width,
6343 &gutter_dimensions,
6344 em_width,
6345 gutter_dimensions.full_width(),
6346 line_height,
6347 &line_layouts,
6348 &local_selections,
6349 &selected_buffer_ids,
6350 is_row_soft_wrapped,
6351 sticky_header_excerpt_id,
6352 cx,
6353 )
6354 });
6355 let mut blocks = match blocks {
6356 Ok(blocks) => blocks,
6357 Err(resized_blocks) => {
6358 self.editor.update(cx, |editor, cx| {
6359 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
6360 });
6361 return self.prepaint(None, bounds, &mut (), cx);
6362 }
6363 };
6364
6365 let sticky_buffer_header = sticky_header_excerpt.map(|sticky_header_excerpt| {
6366 cx.with_element_namespace("blocks", |cx| {
6367 self.layout_sticky_buffer_header(
6368 sticky_header_excerpt,
6369 scroll_position.y,
6370 line_height,
6371 &snapshot,
6372 &hitbox,
6373 &selected_buffer_ids,
6374 cx,
6375 )
6376 })
6377 });
6378
6379 let start_buffer_row =
6380 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
6381 let end_buffer_row =
6382 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
6383
6384 let scroll_max = point(
6385 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
6386 max_row.as_f32(),
6387 );
6388
6389 self.editor.update(cx, |editor, cx| {
6390 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
6391
6392 let autoscrolled = if autoscroll_horizontally {
6393 editor.autoscroll_horizontally(
6394 start_row,
6395 text_hitbox.size.width,
6396 scroll_width,
6397 em_width,
6398 &line_layouts,
6399 cx,
6400 )
6401 } else {
6402 false
6403 };
6404
6405 if clamped || autoscrolled {
6406 snapshot = editor.snapshot(cx);
6407 scroll_position = snapshot.scroll_position();
6408 }
6409 });
6410
6411 let scroll_pixel_position = point(
6412 scroll_position.x * em_width,
6413 scroll_position.y * line_height,
6414 );
6415
6416 let indent_guides = self.layout_indent_guides(
6417 content_origin,
6418 text_hitbox.origin,
6419 start_buffer_row..end_buffer_row,
6420 scroll_pixel_position,
6421 line_height,
6422 &snapshot,
6423 cx,
6424 );
6425
6426 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
6427 self.prepaint_crease_trailers(
6428 crease_trailers,
6429 &line_layouts,
6430 line_height,
6431 content_origin,
6432 scroll_pixel_position,
6433 em_width,
6434 cx,
6435 )
6436 });
6437
6438 let mut inline_blame = None;
6439 if let Some(newest_selection_head) = newest_selection_head {
6440 let display_row = newest_selection_head.row();
6441 if (start_row..end_row).contains(&display_row) {
6442 let line_ix = display_row.minus(start_row) as usize;
6443 let line_layout = &line_layouts[line_ix];
6444 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
6445 inline_blame = self.layout_inline_blame(
6446 display_row,
6447 &snapshot.display_snapshot,
6448 line_layout,
6449 crease_trailer_layout,
6450 em_width,
6451 content_origin,
6452 scroll_pixel_position,
6453 line_height,
6454 cx,
6455 );
6456 }
6457 }
6458
6459 let blamed_display_rows = self.layout_blame_entries(
6460 buffer_rows.into_iter(),
6461 em_width,
6462 scroll_position,
6463 line_height,
6464 &gutter_hitbox,
6465 gutter_dimensions.git_blame_entries_width,
6466 cx,
6467 );
6468
6469 let scroll_max = point(
6470 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
6471 max_scroll_top,
6472 );
6473
6474 self.editor.update(cx, |editor, cx| {
6475 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
6476
6477 let autoscrolled = if autoscroll_horizontally {
6478 editor.autoscroll_horizontally(
6479 start_row,
6480 text_hitbox.size.width,
6481 scroll_width,
6482 em_width,
6483 &line_layouts,
6484 cx,
6485 )
6486 } else {
6487 false
6488 };
6489
6490 if clamped || autoscrolled {
6491 snapshot = editor.snapshot(cx);
6492 scroll_position = snapshot.scroll_position();
6493 }
6494 });
6495
6496 let line_elements = self.prepaint_lines(
6497 start_row,
6498 &mut line_layouts,
6499 line_height,
6500 scroll_pixel_position,
6501 content_origin,
6502 cx,
6503 );
6504
6505 let mut block_start_rows = HashSet::default();
6506
6507 cx.with_element_namespace("blocks", |cx| {
6508 self.layout_blocks(
6509 &mut blocks,
6510 &mut block_start_rows,
6511 &hitbox,
6512 line_height,
6513 scroll_pixel_position,
6514 cx,
6515 );
6516 });
6517
6518 let cursors = self.collect_cursors(&snapshot, cx);
6519 let visible_row_range = start_row..end_row;
6520 let non_visible_cursors = cursors
6521 .iter()
6522 .any(move |c| !visible_row_range.contains(&c.0.row()));
6523
6524 let visible_cursors = self.layout_visible_cursors(
6525 &snapshot,
6526 &selections,
6527 &block_start_rows,
6528 start_row..end_row,
6529 &line_layouts,
6530 &text_hitbox,
6531 content_origin,
6532 scroll_position,
6533 scroll_pixel_position,
6534 line_height,
6535 em_width,
6536 em_advance,
6537 autoscroll_containing_element,
6538 cx,
6539 );
6540
6541 let scrollbars_layout = self.layout_scrollbars(
6542 &snapshot,
6543 scrollbar_range_data,
6544 scroll_position,
6545 non_visible_cursors,
6546 cx,
6547 );
6548
6549 let gutter_settings = EditorSettings::get_global(cx).gutter;
6550
6551 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
6552 editor
6553 .diff_map
6554 .hunks(false)
6555 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
6556 .map(|expanded_hunk| {
6557 let start_row = expanded_hunk
6558 .hunk_range
6559 .start
6560 .to_display_point(&snapshot)
6561 .row();
6562 (start_row, expanded_hunk.clone())
6563 })
6564 .collect::<HashMap<_, _>>()
6565 });
6566
6567 let rows_with_hunk_bounds = display_hunks
6568 .iter()
6569 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
6570 .fold(
6571 HashMap::default(),
6572 |mut rows_with_hunk_bounds, (hunk, bounds)| {
6573 match hunk {
6574 DisplayDiffHunk::Folded { display_row } => {
6575 rows_with_hunk_bounds.insert(*display_row, bounds);
6576 }
6577 DisplayDiffHunk::Unfolded {
6578 display_row_range, ..
6579 } => {
6580 for display_row in display_row_range.iter_rows() {
6581 rows_with_hunk_bounds.insert(display_row, bounds);
6582 }
6583 }
6584 }
6585 rows_with_hunk_bounds
6586 },
6587 );
6588 let mut code_actions_indicator = None;
6589 if let Some(newest_selection_head) = newest_selection_head {
6590 if (start_row..end_row).contains(&newest_selection_head.row()) {
6591 self.layout_context_menu(
6592 line_height,
6593 &text_hitbox,
6594 content_origin,
6595 start_row,
6596 scroll_pixel_position,
6597 &line_layouts,
6598 newest_selection_head,
6599 gutter_dimensions.width - gutter_dimensions.left_padding,
6600 cx,
6601 );
6602
6603 let show_code_actions = snapshot
6604 .show_code_actions
6605 .unwrap_or(gutter_settings.code_actions);
6606 if show_code_actions {
6607 let newest_selection_point =
6608 newest_selection_head.to_point(&snapshot.display_snapshot);
6609 let newest_selection_display_row =
6610 newest_selection_point.to_display_point(&snapshot).row();
6611 if !expanded_add_hunks_by_rows
6612 .contains_key(&newest_selection_display_row)
6613 {
6614 if !snapshot
6615 .is_line_folded(MultiBufferRow(newest_selection_point.row))
6616 {
6617 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
6618 MultiBufferRow(newest_selection_point.row),
6619 );
6620 if let Some((buffer, range)) = buffer {
6621 let buffer_id = buffer.remote_id();
6622 let row = range.start.row;
6623 let has_test_indicator = self
6624 .editor
6625 .read(cx)
6626 .tasks
6627 .contains_key(&(buffer_id, row));
6628
6629 if !has_test_indicator {
6630 code_actions_indicator = self
6631 .layout_code_actions_indicator(
6632 line_height,
6633 newest_selection_head,
6634 scroll_pixel_position,
6635 &gutter_dimensions,
6636 &gutter_hitbox,
6637 &rows_with_hunk_bounds,
6638 cx,
6639 );
6640 }
6641 }
6642 }
6643 }
6644 }
6645 }
6646 }
6647
6648 let test_indicators = if gutter_settings.runnables {
6649 self.layout_run_indicators(
6650 line_height,
6651 start_row..end_row,
6652 scroll_pixel_position,
6653 &gutter_dimensions,
6654 &gutter_hitbox,
6655 &rows_with_hunk_bounds,
6656 &snapshot,
6657 cx,
6658 )
6659 } else {
6660 Vec::new()
6661 };
6662
6663 self.layout_signature_help(
6664 &hitbox,
6665 content_origin,
6666 scroll_pixel_position,
6667 newest_selection_head,
6668 start_row,
6669 &line_layouts,
6670 line_height,
6671 em_width,
6672 cx,
6673 );
6674
6675 if !cx.has_active_drag() {
6676 self.layout_hover_popovers(
6677 &snapshot,
6678 &hitbox,
6679 &text_hitbox,
6680 start_row..end_row,
6681 content_origin,
6682 scroll_pixel_position,
6683 &line_layouts,
6684 line_height,
6685 em_width,
6686 cx,
6687 );
6688 }
6689
6690 let inline_completion_popover = self.layout_inline_completion_popover(
6691 &text_hitbox.bounds,
6692 &snapshot,
6693 start_row..end_row,
6694 scroll_position.y,
6695 scroll_position.y + height_in_lines,
6696 &line_layouts,
6697 line_height,
6698 scroll_pixel_position,
6699 editor_width,
6700 &style,
6701 cx,
6702 );
6703
6704 let mouse_context_menu = self.layout_mouse_context_menu(
6705 &snapshot,
6706 start_row..end_row,
6707 content_origin,
6708 cx,
6709 );
6710
6711 cx.with_element_namespace("crease_toggles", |cx| {
6712 self.prepaint_crease_toggles(
6713 &mut crease_toggles,
6714 line_height,
6715 &gutter_dimensions,
6716 gutter_settings,
6717 scroll_pixel_position,
6718 &gutter_hitbox,
6719 cx,
6720 )
6721 });
6722
6723 let invisible_symbol_font_size = font_size / 2.;
6724 let tab_invisible = cx
6725 .text_system()
6726 .shape_line(
6727 "→".into(),
6728 invisible_symbol_font_size,
6729 &[TextRun {
6730 len: "→".len(),
6731 font: self.style.text.font(),
6732 color: cx.theme().colors().editor_invisible,
6733 background_color: None,
6734 underline: None,
6735 strikethrough: None,
6736 }],
6737 )
6738 .unwrap();
6739 let space_invisible = cx
6740 .text_system()
6741 .shape_line(
6742 "•".into(),
6743 invisible_symbol_font_size,
6744 &[TextRun {
6745 len: "•".len(),
6746 font: self.style.text.font(),
6747 color: cx.theme().colors().editor_invisible,
6748 background_color: None,
6749 underline: None,
6750 strikethrough: None,
6751 }],
6752 )
6753 .unwrap();
6754
6755 EditorLayout {
6756 mode: snapshot.mode,
6757 position_map: Rc::new(PositionMap {
6758 size: bounds.size,
6759 scroll_pixel_position,
6760 scroll_max,
6761 line_layouts,
6762 line_height,
6763 em_width,
6764 em_advance,
6765 snapshot,
6766 }),
6767 visible_display_row_range: start_row..end_row,
6768 wrap_guides,
6769 indent_guides,
6770 hitbox,
6771 text_hitbox,
6772 gutter_hitbox,
6773 display_hunks,
6774 content_origin,
6775 scrollbars_layout,
6776 active_rows,
6777 highlighted_rows,
6778 highlighted_ranges,
6779 highlighted_gutter_ranges,
6780 redacted_ranges,
6781 line_elements,
6782 line_numbers,
6783 blamed_display_rows,
6784 inline_blame,
6785 blocks,
6786 cursors,
6787 visible_cursors,
6788 selections,
6789 inline_completion_popover,
6790 mouse_context_menu,
6791 test_indicators,
6792 code_actions_indicator,
6793 crease_toggles,
6794 crease_trailers,
6795 tab_invisible,
6796 space_invisible,
6797 sticky_buffer_header,
6798 }
6799 })
6800 })
6801 })
6802 }
6803
6804 fn paint(
6805 &mut self,
6806 _: Option<&GlobalElementId>,
6807 bounds: Bounds<gpui::Pixels>,
6808 _: &mut Self::RequestLayoutState,
6809 layout: &mut Self::PrepaintState,
6810 cx: &mut WindowContext,
6811 ) {
6812 let focus_handle = self.editor.focus_handle(cx);
6813 let key_context = self.editor.update(cx, |editor, cx| editor.key_context(cx));
6814
6815 cx.set_key_context(key_context);
6816 cx.handle_input(
6817 &focus_handle,
6818 ElementInputHandler::new(bounds, self.editor.clone()),
6819 );
6820 self.register_actions(cx);
6821 self.register_key_listeners(cx, layout);
6822
6823 let text_style = TextStyleRefinement {
6824 font_size: Some(self.style.text.font_size),
6825 line_height: Some(self.style.text.line_height),
6826 ..Default::default()
6827 };
6828 let hovered_hunk = layout
6829 .display_hunks
6830 .iter()
6831 .find_map(|(hunk, hunk_hitbox)| match hunk {
6832 DisplayDiffHunk::Folded { .. } => None,
6833 DisplayDiffHunk::Unfolded {
6834 diff_base_byte_range,
6835 multi_buffer_range,
6836 status,
6837 ..
6838 } => {
6839 if hunk_hitbox
6840 .as_ref()
6841 .map(|hitbox| hitbox.is_hovered(cx))
6842 .unwrap_or(false)
6843 {
6844 Some(HoveredHunk {
6845 status: *status,
6846 multi_buffer_range: multi_buffer_range.clone(),
6847 diff_base_byte_range: diff_base_byte_range.clone(),
6848 })
6849 } else {
6850 None
6851 }
6852 }
6853 });
6854 let rem_size = self.rem_size(cx);
6855 cx.with_rem_size(rem_size, |cx| {
6856 cx.with_text_style(Some(text_style), |cx| {
6857 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
6858 self.paint_mouse_listeners(layout, hovered_hunk, cx);
6859 self.paint_background(layout, cx);
6860 self.paint_indent_guides(layout, cx);
6861
6862 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6863 self.paint_blamed_display_rows(layout, cx);
6864 self.paint_line_numbers(layout, cx);
6865 }
6866
6867 self.paint_text(layout, cx);
6868
6869 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6870 self.paint_gutter_highlights(layout, cx);
6871 self.paint_gutter_indicators(layout, cx);
6872 }
6873
6874 if !layout.blocks.is_empty() {
6875 cx.with_element_namespace("blocks", |cx| {
6876 self.paint_blocks(layout, cx);
6877 });
6878 }
6879
6880 cx.with_element_namespace("blocks", |cx| {
6881 if let Some(mut sticky_header) = layout.sticky_buffer_header.take() {
6882 sticky_header.paint(cx)
6883 }
6884 });
6885
6886 self.paint_scrollbars(layout, cx);
6887 self.paint_inline_completion_popover(layout, cx);
6888 self.paint_mouse_context_menu(layout, cx);
6889 });
6890 })
6891 })
6892 }
6893}
6894
6895pub(super) fn gutter_bounds(
6896 editor_bounds: Bounds<Pixels>,
6897 gutter_dimensions: GutterDimensions,
6898) -> Bounds<Pixels> {
6899 Bounds {
6900 origin: editor_bounds.origin,
6901 size: size(gutter_dimensions.width, editor_bounds.size.height),
6902 }
6903}
6904
6905struct ScrollbarRangeData {
6906 scrollbar_bounds: Bounds<Pixels>,
6907 scroll_range: Bounds<Pixels>,
6908 letter_size: Size<Pixels>,
6909}
6910
6911impl ScrollbarRangeData {
6912 pub fn new(
6913 scrollbar_bounds: Bounds<Pixels>,
6914 letter_size: Size<Pixels>,
6915 snapshot: &EditorSnapshot,
6916 longest_line_width: Pixels,
6917 style: &EditorStyle,
6918 cx: &WindowContext,
6919 ) -> ScrollbarRangeData {
6920 // TODO: Simplify this function down, it requires a lot of parameters
6921 let max_row = snapshot.max_point().row();
6922 let text_bounds_size = size(longest_line_width, max_row.0 as f32 * letter_size.height);
6923
6924 let scrollbar_width = style.scrollbar_width;
6925
6926 let settings = EditorSettings::get_global(cx);
6927 let scroll_beyond_last_line: Pixels = match settings.scroll_beyond_last_line {
6928 ScrollBeyondLastLine::OnePage => px(scrollbar_bounds.size.height / letter_size.height),
6929 ScrollBeyondLastLine::Off => px(1.),
6930 ScrollBeyondLastLine::VerticalScrollMargin => px(1.0 + settings.vertical_scroll_margin),
6931 };
6932
6933 let overscroll = size(
6934 scrollbar_width + (letter_size.width / 2.0),
6935 letter_size.height * scroll_beyond_last_line,
6936 );
6937
6938 let scroll_range = Bounds {
6939 origin: scrollbar_bounds.origin,
6940 size: text_bounds_size + overscroll,
6941 };
6942
6943 ScrollbarRangeData {
6944 scrollbar_bounds,
6945 scroll_range,
6946 letter_size,
6947 }
6948 }
6949}
6950
6951impl IntoElement for EditorElement {
6952 type Element = Self;
6953
6954 fn into_element(self) -> Self::Element {
6955 self
6956 }
6957}
6958
6959pub struct EditorLayout {
6960 position_map: Rc<PositionMap>,
6961 hitbox: Hitbox,
6962 text_hitbox: Hitbox,
6963 gutter_hitbox: Hitbox,
6964 content_origin: gpui::Point<Pixels>,
6965 scrollbars_layout: AxisPair<Option<ScrollbarLayout>>,
6966 mode: EditorMode,
6967 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
6968 indent_guides: Option<Vec<IndentGuideLayout>>,
6969 visible_display_row_range: Range<DisplayRow>,
6970 active_rows: BTreeMap<DisplayRow, bool>,
6971 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
6972 line_elements: SmallVec<[AnyElement; 1]>,
6973 line_numbers: Arc<HashMap<MultiBufferRow, (ShapedLine, Option<Hitbox>)>>,
6974 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
6975 blamed_display_rows: Option<Vec<AnyElement>>,
6976 inline_blame: Option<AnyElement>,
6977 blocks: Vec<BlockLayout>,
6978 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
6979 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
6980 redacted_ranges: Vec<Range<DisplayPoint>>,
6981 cursors: Vec<(DisplayPoint, Hsla)>,
6982 visible_cursors: Vec<CursorLayout>,
6983 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
6984 code_actions_indicator: Option<AnyElement>,
6985 test_indicators: Vec<AnyElement>,
6986 crease_toggles: Vec<Option<AnyElement>>,
6987 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
6988 inline_completion_popover: Option<AnyElement>,
6989 mouse_context_menu: Option<AnyElement>,
6990 tab_invisible: ShapedLine,
6991 space_invisible: ShapedLine,
6992 sticky_buffer_header: Option<AnyElement>,
6993}
6994
6995impl EditorLayout {
6996 fn line_end_overshoot(&self) -> Pixels {
6997 0.15 * self.position_map.line_height
6998 }
6999}
7000
7001struct ColoredRange<T> {
7002 start: T,
7003 end: T,
7004 color: Hsla,
7005}
7006
7007#[derive(Clone)]
7008struct ScrollbarLayout {
7009 hitbox: Hitbox,
7010 visible_range: Range<f32>,
7011 visible: bool,
7012 text_unit_size: Pixels,
7013 thumb_size: Pixels,
7014 axis: Axis,
7015}
7016
7017impl ScrollbarLayout {
7018 const BORDER_WIDTH: Pixels = px(1.0);
7019 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
7020 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
7021 // const MIN_THUMB_HEIGHT: Pixels = px(20.0);
7022
7023 fn thumb_bounds(&self) -> Bounds<Pixels> {
7024 match self.axis {
7025 Axis::Vertical => {
7026 let thumb_top = self.y_for_row(self.visible_range.start);
7027 let thumb_bottom = thumb_top + self.thumb_size;
7028 Bounds::from_corners(
7029 point(self.hitbox.left(), thumb_top),
7030 point(self.hitbox.right(), thumb_bottom),
7031 )
7032 }
7033 Axis::Horizontal => {
7034 let thumb_left =
7035 self.hitbox.left() + self.visible_range.start * self.text_unit_size;
7036 let thumb_right = thumb_left + self.thumb_size;
7037 Bounds::from_corners(
7038 point(thumb_left, self.hitbox.top()),
7039 point(thumb_right, self.hitbox.bottom()),
7040 )
7041 }
7042 }
7043 }
7044
7045 fn y_for_row(&self, row: f32) -> Pixels {
7046 self.hitbox.top() + row * self.text_unit_size
7047 }
7048
7049 fn marker_quads_for_ranges(
7050 &self,
7051 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
7052 column: Option<usize>,
7053 ) -> Vec<PaintQuad> {
7054 struct MinMax {
7055 min: Pixels,
7056 max: Pixels,
7057 }
7058 let (x_range, height_limit) = if let Some(column) = column {
7059 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
7060 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
7061 let end = start + column_width;
7062 (
7063 Range { start, end },
7064 MinMax {
7065 min: Self::MIN_MARKER_HEIGHT,
7066 max: px(f32::MAX),
7067 },
7068 )
7069 } else {
7070 (
7071 Range {
7072 start: Self::BORDER_WIDTH,
7073 end: self.hitbox.size.width,
7074 },
7075 MinMax {
7076 min: Self::LINE_MARKER_HEIGHT,
7077 max: Self::LINE_MARKER_HEIGHT,
7078 },
7079 )
7080 };
7081
7082 let row_to_y = |row: DisplayRow| row.as_f32() * self.text_unit_size;
7083 let mut pixel_ranges = row_ranges
7084 .into_iter()
7085 .map(|range| {
7086 let start_y = row_to_y(range.start);
7087 let end_y = row_to_y(range.end)
7088 + self
7089 .text_unit_size
7090 .max(height_limit.min)
7091 .min(height_limit.max);
7092 ColoredRange {
7093 start: start_y,
7094 end: end_y,
7095 color: range.color,
7096 }
7097 })
7098 .peekable();
7099
7100 let mut quads = Vec::new();
7101 while let Some(mut pixel_range) = pixel_ranges.next() {
7102 while let Some(next_pixel_range) = pixel_ranges.peek() {
7103 if pixel_range.end >= next_pixel_range.start - px(1.0)
7104 && pixel_range.color == next_pixel_range.color
7105 {
7106 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
7107 pixel_ranges.next();
7108 } else {
7109 break;
7110 }
7111 }
7112
7113 let bounds = Bounds::from_corners(
7114 point(x_range.start, pixel_range.start),
7115 point(x_range.end, pixel_range.end),
7116 );
7117 quads.push(quad(
7118 bounds,
7119 Corners::default(),
7120 pixel_range.color,
7121 Edges::default(),
7122 Hsla::transparent_black(),
7123 ));
7124 }
7125
7126 quads
7127 }
7128}
7129
7130struct CreaseTrailerLayout {
7131 element: AnyElement,
7132 bounds: Bounds<Pixels>,
7133}
7134
7135struct PositionMap {
7136 size: Size<Pixels>,
7137 line_height: Pixels,
7138 scroll_pixel_position: gpui::Point<Pixels>,
7139 scroll_max: gpui::Point<f32>,
7140 em_width: Pixels,
7141 em_advance: Pixels,
7142 line_layouts: Vec<LineWithInvisibles>,
7143 snapshot: EditorSnapshot,
7144}
7145
7146#[derive(Debug, Copy, Clone)]
7147pub struct PointForPosition {
7148 pub previous_valid: DisplayPoint,
7149 pub next_valid: DisplayPoint,
7150 pub exact_unclipped: DisplayPoint,
7151 pub column_overshoot_after_line_end: u32,
7152}
7153
7154impl PointForPosition {
7155 pub fn as_valid(&self) -> Option<DisplayPoint> {
7156 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
7157 Some(self.previous_valid)
7158 } else {
7159 None
7160 }
7161 }
7162}
7163
7164impl PositionMap {
7165 fn point_for_position(
7166 &self,
7167 text_bounds: Bounds<Pixels>,
7168 position: gpui::Point<Pixels>,
7169 ) -> PointForPosition {
7170 let scroll_position = self.snapshot.scroll_position();
7171 let position = position - text_bounds.origin;
7172 let y = position.y.max(px(0.)).min(self.size.height);
7173 let x = position.x + (scroll_position.x * self.em_width);
7174 let row = ((y / self.line_height) + scroll_position.y) as u32;
7175
7176 let (column, x_overshoot_after_line_end) = if let Some(line) = self
7177 .line_layouts
7178 .get(row as usize - scroll_position.y as usize)
7179 {
7180 if let Some(ix) = line.index_for_x(x) {
7181 (ix as u32, px(0.))
7182 } else {
7183 (line.len as u32, px(0.).max(x - line.width))
7184 }
7185 } else {
7186 (0, x)
7187 };
7188
7189 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
7190 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
7191 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
7192
7193 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
7194 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
7195 PointForPosition {
7196 previous_valid,
7197 next_valid,
7198 exact_unclipped,
7199 column_overshoot_after_line_end,
7200 }
7201 }
7202}
7203
7204struct BlockLayout {
7205 id: BlockId,
7206 row: Option<DisplayRow>,
7207 element: AnyElement,
7208 available_space: Size<AvailableSpace>,
7209 style: BlockStyle,
7210}
7211
7212fn layout_line(
7213 row: DisplayRow,
7214 snapshot: &EditorSnapshot,
7215 style: &EditorStyle,
7216 text_width: Pixels,
7217 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
7218 cx: &mut WindowContext,
7219) -> LineWithInvisibles {
7220 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
7221 LineWithInvisibles::from_chunks(
7222 chunks,
7223 &style,
7224 MAX_LINE_LEN,
7225 1,
7226 snapshot.mode,
7227 text_width,
7228 is_row_soft_wrapped,
7229 cx,
7230 )
7231 .pop()
7232 .unwrap()
7233}
7234
7235#[derive(Debug)]
7236pub struct IndentGuideLayout {
7237 origin: gpui::Point<Pixels>,
7238 length: Pixels,
7239 single_indent_width: Pixels,
7240 depth: u32,
7241 active: bool,
7242 settings: IndentGuideSettings,
7243}
7244
7245pub struct CursorLayout {
7246 origin: gpui::Point<Pixels>,
7247 block_width: Pixels,
7248 line_height: Pixels,
7249 color: Hsla,
7250 shape: CursorShape,
7251 block_text: Option<ShapedLine>,
7252 cursor_name: Option<AnyElement>,
7253}
7254
7255#[derive(Debug)]
7256pub struct CursorName {
7257 string: SharedString,
7258 color: Hsla,
7259 is_top_row: bool,
7260}
7261
7262impl CursorLayout {
7263 pub fn new(
7264 origin: gpui::Point<Pixels>,
7265 block_width: Pixels,
7266 line_height: Pixels,
7267 color: Hsla,
7268 shape: CursorShape,
7269 block_text: Option<ShapedLine>,
7270 ) -> CursorLayout {
7271 CursorLayout {
7272 origin,
7273 block_width,
7274 line_height,
7275 color,
7276 shape,
7277 block_text,
7278 cursor_name: None,
7279 }
7280 }
7281
7282 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
7283 Bounds {
7284 origin: self.origin + origin,
7285 size: size(self.block_width, self.line_height),
7286 }
7287 }
7288
7289 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
7290 match self.shape {
7291 CursorShape::Bar => Bounds {
7292 origin: self.origin + origin,
7293 size: size(px(2.0), self.line_height),
7294 },
7295 CursorShape::Block | CursorShape::Hollow => Bounds {
7296 origin: self.origin + origin,
7297 size: size(self.block_width, self.line_height),
7298 },
7299 CursorShape::Underline => Bounds {
7300 origin: self.origin
7301 + origin
7302 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
7303 size: size(self.block_width, px(2.0)),
7304 },
7305 }
7306 }
7307
7308 pub fn layout(
7309 &mut self,
7310 origin: gpui::Point<Pixels>,
7311 cursor_name: Option<CursorName>,
7312 cx: &mut WindowContext,
7313 ) {
7314 if let Some(cursor_name) = cursor_name {
7315 let bounds = self.bounds(origin);
7316 let text_size = self.line_height / 1.5;
7317
7318 let name_origin = if cursor_name.is_top_row {
7319 point(bounds.right() - px(1.), bounds.top())
7320 } else {
7321 match self.shape {
7322 CursorShape::Bar => point(
7323 bounds.right() - px(2.),
7324 bounds.top() - text_size / 2. - px(1.),
7325 ),
7326 _ => point(
7327 bounds.right() - px(1.),
7328 bounds.top() - text_size / 2. - px(1.),
7329 ),
7330 }
7331 };
7332 let mut name_element = div()
7333 .bg(self.color)
7334 .text_size(text_size)
7335 .px_0p5()
7336 .line_height(text_size + px(2.))
7337 .text_color(cursor_name.color)
7338 .child(cursor_name.string.clone())
7339 .into_any_element();
7340
7341 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
7342
7343 self.cursor_name = Some(name_element);
7344 }
7345 }
7346
7347 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
7348 let bounds = self.bounds(origin);
7349
7350 //Draw background or border quad
7351 let cursor = if matches!(self.shape, CursorShape::Hollow) {
7352 outline(bounds, self.color)
7353 } else {
7354 fill(bounds, self.color)
7355 };
7356
7357 if let Some(name) = &mut self.cursor_name {
7358 name.paint(cx);
7359 }
7360
7361 cx.paint_quad(cursor);
7362
7363 if let Some(block_text) = &self.block_text {
7364 block_text
7365 .paint(self.origin + origin, self.line_height, cx)
7366 .log_err();
7367 }
7368 }
7369
7370 pub fn shape(&self) -> CursorShape {
7371 self.shape
7372 }
7373}
7374
7375#[derive(Debug)]
7376pub struct HighlightedRange {
7377 pub start_y: Pixels,
7378 pub line_height: Pixels,
7379 pub lines: Vec<HighlightedRangeLine>,
7380 pub color: Hsla,
7381 pub corner_radius: Pixels,
7382}
7383
7384#[derive(Debug)]
7385pub struct HighlightedRangeLine {
7386 pub start_x: Pixels,
7387 pub end_x: Pixels,
7388}
7389
7390impl HighlightedRange {
7391 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
7392 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
7393 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
7394 self.paint_lines(
7395 self.start_y + self.line_height,
7396 &self.lines[1..],
7397 bounds,
7398 cx,
7399 );
7400 } else {
7401 self.paint_lines(self.start_y, &self.lines, bounds, cx);
7402 }
7403 }
7404
7405 fn paint_lines(
7406 &self,
7407 start_y: Pixels,
7408 lines: &[HighlightedRangeLine],
7409 _bounds: Bounds<Pixels>,
7410 cx: &mut WindowContext,
7411 ) {
7412 if lines.is_empty() {
7413 return;
7414 }
7415
7416 let first_line = lines.first().unwrap();
7417 let last_line = lines.last().unwrap();
7418
7419 let first_top_left = point(first_line.start_x, start_y);
7420 let first_top_right = point(first_line.end_x, start_y);
7421
7422 let curve_height = point(Pixels::ZERO, self.corner_radius);
7423 let curve_width = |start_x: Pixels, end_x: Pixels| {
7424 let max = (end_x - start_x) / 2.;
7425 let width = if max < self.corner_radius {
7426 max
7427 } else {
7428 self.corner_radius
7429 };
7430
7431 point(width, Pixels::ZERO)
7432 };
7433
7434 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
7435 let mut path = gpui::Path::new(first_top_right - top_curve_width);
7436 path.curve_to(first_top_right + curve_height, first_top_right);
7437
7438 let mut iter = lines.iter().enumerate().peekable();
7439 while let Some((ix, line)) = iter.next() {
7440 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
7441
7442 if let Some((_, next_line)) = iter.peek() {
7443 let next_top_right = point(next_line.end_x, bottom_right.y);
7444
7445 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
7446 Ordering::Equal => {
7447 path.line_to(bottom_right);
7448 }
7449 Ordering::Less => {
7450 let curve_width = curve_width(next_top_right.x, bottom_right.x);
7451 path.line_to(bottom_right - curve_height);
7452 if self.corner_radius > Pixels::ZERO {
7453 path.curve_to(bottom_right - curve_width, bottom_right);
7454 }
7455 path.line_to(next_top_right + curve_width);
7456 if self.corner_radius > Pixels::ZERO {
7457 path.curve_to(next_top_right + curve_height, next_top_right);
7458 }
7459 }
7460 Ordering::Greater => {
7461 let curve_width = curve_width(bottom_right.x, next_top_right.x);
7462 path.line_to(bottom_right - curve_height);
7463 if self.corner_radius > Pixels::ZERO {
7464 path.curve_to(bottom_right + curve_width, bottom_right);
7465 }
7466 path.line_to(next_top_right - curve_width);
7467 if self.corner_radius > Pixels::ZERO {
7468 path.curve_to(next_top_right + curve_height, next_top_right);
7469 }
7470 }
7471 }
7472 } else {
7473 let curve_width = curve_width(line.start_x, line.end_x);
7474 path.line_to(bottom_right - curve_height);
7475 if self.corner_radius > Pixels::ZERO {
7476 path.curve_to(bottom_right - curve_width, bottom_right);
7477 }
7478
7479 let bottom_left = point(line.start_x, bottom_right.y);
7480 path.line_to(bottom_left + curve_width);
7481 if self.corner_radius > Pixels::ZERO {
7482 path.curve_to(bottom_left - curve_height, bottom_left);
7483 }
7484 }
7485 }
7486
7487 if first_line.start_x > last_line.start_x {
7488 let curve_width = curve_width(last_line.start_x, first_line.start_x);
7489 let second_top_left = point(last_line.start_x, start_y + self.line_height);
7490 path.line_to(second_top_left + curve_height);
7491 if self.corner_radius > Pixels::ZERO {
7492 path.curve_to(second_top_left + curve_width, second_top_left);
7493 }
7494 let first_bottom_left = point(first_line.start_x, second_top_left.y);
7495 path.line_to(first_bottom_left - curve_width);
7496 if self.corner_radius > Pixels::ZERO {
7497 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
7498 }
7499 }
7500
7501 path.line_to(first_top_left + curve_height);
7502 if self.corner_radius > Pixels::ZERO {
7503 path.curve_to(first_top_left + top_curve_width, first_top_left);
7504 }
7505 path.line_to(first_top_right - top_curve_width);
7506
7507 cx.paint_path(path, self.color);
7508 }
7509}
7510
7511pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7512 (delta.pow(1.5) / 100.0).into()
7513}
7514
7515fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7516 (delta.pow(1.2) / 300.0).into()
7517}
7518
7519pub fn register_action<T: Action>(
7520 view: &View<Editor>,
7521 cx: &mut WindowContext,
7522 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
7523) {
7524 let view = view.clone();
7525 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
7526 let action = action.downcast_ref().unwrap();
7527 if phase == DispatchPhase::Bubble {
7528 view.update(cx, |editor, cx| {
7529 listener(editor, action, cx);
7530 })
7531 }
7532 })
7533}
7534
7535fn compute_auto_height_layout(
7536 editor: &mut Editor,
7537 max_lines: usize,
7538 max_line_number_width: Pixels,
7539 known_dimensions: Size<Option<Pixels>>,
7540 available_width: AvailableSpace,
7541 cx: &mut ViewContext<Editor>,
7542) -> Option<Size<Pixels>> {
7543 let width = known_dimensions.width.or({
7544 if let AvailableSpace::Definite(available_width) = available_width {
7545 Some(available_width)
7546 } else {
7547 None
7548 }
7549 })?;
7550 if let Some(height) = known_dimensions.height {
7551 return Some(size(width, height));
7552 }
7553
7554 let style = editor.style.as_ref().unwrap();
7555 let font_id = cx.text_system().resolve_font(&style.text.font());
7556 let font_size = style.text.font_size.to_pixels(cx.rem_size());
7557 let line_height = style.text.line_height_in_pixels(cx.rem_size());
7558 let em_width = cx
7559 .text_system()
7560 .typographic_bounds(font_id, font_size, 'm')
7561 .unwrap()
7562 .size
7563 .width;
7564 let em_advance = cx
7565 .text_system()
7566 .advance(font_id, font_size, 'm')
7567 .unwrap()
7568 .width;
7569
7570 let mut snapshot = editor.snapshot(cx);
7571 let gutter_dimensions = snapshot.gutter_dimensions(
7572 font_id,
7573 font_size,
7574 em_width,
7575 em_advance,
7576 max_line_number_width,
7577 cx,
7578 );
7579
7580 editor.gutter_dimensions = gutter_dimensions;
7581 let text_width = width - gutter_dimensions.width;
7582 let overscroll = size(em_width, px(0.));
7583
7584 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
7585 if editor.set_wrap_width(Some(editor_width), cx) {
7586 snapshot = editor.snapshot(cx);
7587 }
7588
7589 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
7590 let height = scroll_height
7591 .max(line_height)
7592 .min(line_height * max_lines as f32);
7593
7594 Some(size(width, height))
7595}
7596
7597#[cfg(test)]
7598mod tests {
7599 use super::*;
7600 use crate::{
7601 display_map::{BlockPlacement, BlockProperties},
7602 editor_tests::{init_test, update_test_language_settings},
7603 Editor, MultiBuffer,
7604 };
7605 use gpui::{TestAppContext, VisualTestContext};
7606 use language::language_settings;
7607 use log::info;
7608 use similar::DiffableStr;
7609 use std::num::NonZeroU32;
7610 use util::test::sample_text;
7611
7612 #[gpui::test]
7613 fn test_shape_line_numbers(cx: &mut TestAppContext) {
7614 init_test(cx, |_| {});
7615 let window = cx.add_window(|cx| {
7616 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
7617 Editor::new(EditorMode::Full, buffer, None, true, cx)
7618 });
7619
7620 let editor = window.root(cx).unwrap();
7621 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7622 let line_height = window
7623 .update(cx, |_, cx| style.text.line_height_in_pixels(cx.rem_size()))
7624 .unwrap();
7625 let element = EditorElement::new(&editor, style);
7626 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
7627
7628 let layouts = cx
7629 .update_window(*window, |_, cx| {
7630 element.layout_line_numbers(
7631 None,
7632 GutterDimensions {
7633 left_padding: Pixels::ZERO,
7634 right_padding: Pixels::ZERO,
7635 width: px(30.0),
7636 margin: Pixels::ZERO,
7637 git_blame_entries_width: None,
7638 },
7639 line_height,
7640 gpui::Point::default(),
7641 DisplayRow(0)..DisplayRow(6),
7642 (0..6).map(MultiBufferRow).map(Some),
7643 &Default::default(),
7644 Some(DisplayPoint::new(DisplayRow(0), 0)),
7645 &snapshot,
7646 cx,
7647 )
7648 })
7649 .unwrap();
7650 assert_eq!(layouts.len(), 6);
7651
7652 let relative_rows = window
7653 .update(cx, |editor, cx| {
7654 let snapshot = editor.snapshot(cx);
7655 element.calculate_relative_line_numbers(
7656 &snapshot,
7657 &(DisplayRow(0)..DisplayRow(6)),
7658 Some(DisplayRow(3)),
7659 )
7660 })
7661 .unwrap();
7662 assert_eq!(relative_rows[&DisplayRow(0)], 3);
7663 assert_eq!(relative_rows[&DisplayRow(1)], 2);
7664 assert_eq!(relative_rows[&DisplayRow(2)], 1);
7665 // current line has no relative number
7666 assert_eq!(relative_rows[&DisplayRow(4)], 1);
7667 assert_eq!(relative_rows[&DisplayRow(5)], 2);
7668
7669 // works if cursor is before screen
7670 let relative_rows = window
7671 .update(cx, |editor, cx| {
7672 let snapshot = editor.snapshot(cx);
7673 element.calculate_relative_line_numbers(
7674 &snapshot,
7675 &(DisplayRow(3)..DisplayRow(6)),
7676 Some(DisplayRow(1)),
7677 )
7678 })
7679 .unwrap();
7680 assert_eq!(relative_rows.len(), 3);
7681 assert_eq!(relative_rows[&DisplayRow(3)], 2);
7682 assert_eq!(relative_rows[&DisplayRow(4)], 3);
7683 assert_eq!(relative_rows[&DisplayRow(5)], 4);
7684
7685 // works if cursor is after screen
7686 let relative_rows = window
7687 .update(cx, |editor, cx| {
7688 let snapshot = editor.snapshot(cx);
7689 element.calculate_relative_line_numbers(
7690 &snapshot,
7691 &(DisplayRow(0)..DisplayRow(3)),
7692 Some(DisplayRow(6)),
7693 )
7694 })
7695 .unwrap();
7696 assert_eq!(relative_rows.len(), 3);
7697 assert_eq!(relative_rows[&DisplayRow(0)], 5);
7698 assert_eq!(relative_rows[&DisplayRow(1)], 4);
7699 assert_eq!(relative_rows[&DisplayRow(2)], 3);
7700 }
7701
7702 #[gpui::test]
7703 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
7704 init_test(cx, |_| {});
7705
7706 let window = cx.add_window(|cx| {
7707 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
7708 Editor::new(EditorMode::Full, buffer, None, true, cx)
7709 });
7710 let cx = &mut VisualTestContext::from_window(*window, cx);
7711 let editor = window.root(cx).unwrap();
7712 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7713
7714 window
7715 .update(cx, |editor, cx| {
7716 editor.cursor_shape = CursorShape::Block;
7717 editor.change_selections(None, cx, |s| {
7718 s.select_ranges([
7719 Point::new(0, 0)..Point::new(1, 0),
7720 Point::new(3, 2)..Point::new(3, 3),
7721 Point::new(5, 6)..Point::new(6, 0),
7722 ]);
7723 });
7724 })
7725 .unwrap();
7726
7727 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7728 EditorElement::new(&editor, style)
7729 });
7730
7731 assert_eq!(state.selections.len(), 1);
7732 let local_selections = &state.selections[0].1;
7733 assert_eq!(local_selections.len(), 3);
7734 // moves cursor back one line
7735 assert_eq!(
7736 local_selections[0].head,
7737 DisplayPoint::new(DisplayRow(0), 6)
7738 );
7739 assert_eq!(
7740 local_selections[0].range,
7741 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
7742 );
7743
7744 // moves cursor back one column
7745 assert_eq!(
7746 local_selections[1].range,
7747 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
7748 );
7749 assert_eq!(
7750 local_selections[1].head,
7751 DisplayPoint::new(DisplayRow(3), 2)
7752 );
7753
7754 // leaves cursor on the max point
7755 assert_eq!(
7756 local_selections[2].range,
7757 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
7758 );
7759 assert_eq!(
7760 local_selections[2].head,
7761 DisplayPoint::new(DisplayRow(6), 0)
7762 );
7763
7764 // active lines does not include 1 (even though the range of the selection does)
7765 assert_eq!(
7766 state.active_rows.keys().cloned().collect::<Vec<_>>(),
7767 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
7768 );
7769
7770 // multi-buffer support
7771 // in DisplayPoint coordinates, this is what we're dealing with:
7772 // 0: [[file
7773 // 1: header
7774 // 2: section]]
7775 // 3: aaaaaa
7776 // 4: bbbbbb
7777 // 5: cccccc
7778 // 6:
7779 // 7: [[footer]]
7780 // 8: [[header]]
7781 // 9: ffffff
7782 // 10: gggggg
7783 // 11: hhhhhh
7784 // 12:
7785 // 13: [[footer]]
7786 // 14: [[file
7787 // 15: header
7788 // 16: section]]
7789 // 17: bbbbbb
7790 // 18: cccccc
7791 // 19: dddddd
7792 // 20: [[footer]]
7793 let window = cx.add_window(|cx| {
7794 let buffer = MultiBuffer::build_multi(
7795 [
7796 (
7797 &(sample_text(8, 6, 'a') + "\n"),
7798 vec![
7799 Point::new(0, 0)..Point::new(3, 0),
7800 Point::new(4, 0)..Point::new(7, 0),
7801 ],
7802 ),
7803 (
7804 &(sample_text(8, 6, 'a') + "\n"),
7805 vec![Point::new(1, 0)..Point::new(3, 0)],
7806 ),
7807 ],
7808 cx,
7809 );
7810 Editor::new(EditorMode::Full, buffer, None, true, cx)
7811 });
7812 let editor = window.root(cx).unwrap();
7813 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7814 let _state = window.update(cx, |editor, cx| {
7815 editor.cursor_shape = CursorShape::Block;
7816 editor.change_selections(None, cx, |s| {
7817 s.select_display_ranges([
7818 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
7819 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
7820 ]);
7821 });
7822 });
7823
7824 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7825 EditorElement::new(&editor, style)
7826 });
7827 assert_eq!(state.selections.len(), 1);
7828 let local_selections = &state.selections[0].1;
7829 assert_eq!(local_selections.len(), 2);
7830
7831 // moves cursor on excerpt boundary back a line
7832 // and doesn't allow selection to bleed through
7833 assert_eq!(
7834 local_selections[0].range,
7835 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
7836 );
7837 assert_eq!(
7838 local_selections[0].head,
7839 DisplayPoint::new(DisplayRow(6), 0)
7840 );
7841 // moves cursor on buffer boundary back two lines
7842 // and doesn't allow selection to bleed through
7843 assert_eq!(
7844 local_selections[1].range,
7845 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
7846 );
7847 assert_eq!(
7848 local_selections[1].head,
7849 DisplayPoint::new(DisplayRow(12), 0)
7850 );
7851 }
7852
7853 #[gpui::test]
7854 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
7855 init_test(cx, |_| {});
7856
7857 let window = cx.add_window(|cx| {
7858 let buffer = MultiBuffer::build_simple("", cx);
7859 Editor::new(EditorMode::Full, buffer, None, true, cx)
7860 });
7861 let cx = &mut VisualTestContext::from_window(*window, cx);
7862 let editor = window.root(cx).unwrap();
7863 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7864 window
7865 .update(cx, |editor, cx| {
7866 editor.set_placeholder_text("hello", cx);
7867 editor.insert_blocks(
7868 [BlockProperties {
7869 style: BlockStyle::Fixed,
7870 placement: BlockPlacement::Above(Anchor::min()),
7871 height: 3,
7872 render: Arc::new(|cx| div().h(3. * cx.line_height()).into_any()),
7873 priority: 0,
7874 }],
7875 None,
7876 cx,
7877 );
7878
7879 // Blur the editor so that it displays placeholder text.
7880 cx.blur();
7881 })
7882 .unwrap();
7883
7884 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7885 EditorElement::new(&editor, style)
7886 });
7887 assert_eq!(state.position_map.line_layouts.len(), 4);
7888 assert_eq!(state.line_numbers.len(), 1);
7889 assert_eq!(
7890 state
7891 .line_numbers
7892 .get(&MultiBufferRow(0))
7893 .and_then(|(line, _)| line.text.as_str()),
7894 Some("1")
7895 );
7896 }
7897
7898 #[gpui::test]
7899 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
7900 const TAB_SIZE: u32 = 4;
7901
7902 let input_text = "\t \t|\t| a b";
7903 let expected_invisibles = vec![
7904 Invisible::Tab {
7905 line_start_offset: 0,
7906 line_end_offset: TAB_SIZE as usize,
7907 },
7908 Invisible::Whitespace {
7909 line_offset: TAB_SIZE as usize,
7910 },
7911 Invisible::Tab {
7912 line_start_offset: TAB_SIZE as usize + 1,
7913 line_end_offset: TAB_SIZE as usize * 2,
7914 },
7915 Invisible::Tab {
7916 line_start_offset: TAB_SIZE as usize * 2 + 1,
7917 line_end_offset: TAB_SIZE as usize * 3,
7918 },
7919 Invisible::Whitespace {
7920 line_offset: TAB_SIZE as usize * 3 + 1,
7921 },
7922 Invisible::Whitespace {
7923 line_offset: TAB_SIZE as usize * 3 + 3,
7924 },
7925 ];
7926 assert_eq!(
7927 expected_invisibles.len(),
7928 input_text
7929 .chars()
7930 .filter(|initial_char| initial_char.is_whitespace())
7931 .count(),
7932 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
7933 );
7934
7935 for show_line_numbers in [true, false] {
7936 init_test(cx, |s| {
7937 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7938 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
7939 });
7940
7941 let actual_invisibles = collect_invisibles_from_new_editor(
7942 cx,
7943 EditorMode::Full,
7944 input_text,
7945 px(500.0),
7946 show_line_numbers,
7947 );
7948
7949 assert_eq!(expected_invisibles, actual_invisibles);
7950 }
7951 }
7952
7953 #[gpui::test]
7954 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
7955 init_test(cx, |s| {
7956 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7957 s.defaults.tab_size = NonZeroU32::new(4);
7958 });
7959
7960 for editor_mode_without_invisibles in [
7961 EditorMode::SingleLine { auto_width: false },
7962 EditorMode::AutoHeight { max_lines: 100 },
7963 ] {
7964 for show_line_numbers in [true, false] {
7965 let invisibles = collect_invisibles_from_new_editor(
7966 cx,
7967 editor_mode_without_invisibles,
7968 "\t\t\t| | a b",
7969 px(500.0),
7970 show_line_numbers,
7971 );
7972 assert!(invisibles.is_empty(),
7973 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
7974 }
7975 }
7976 }
7977
7978 #[gpui::test]
7979 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
7980 let tab_size = 4;
7981 let input_text = "a\tbcd ".repeat(9);
7982 let repeated_invisibles = [
7983 Invisible::Tab {
7984 line_start_offset: 1,
7985 line_end_offset: tab_size as usize,
7986 },
7987 Invisible::Whitespace {
7988 line_offset: tab_size as usize + 3,
7989 },
7990 Invisible::Whitespace {
7991 line_offset: tab_size as usize + 4,
7992 },
7993 Invisible::Whitespace {
7994 line_offset: tab_size as usize + 5,
7995 },
7996 Invisible::Whitespace {
7997 line_offset: tab_size as usize + 6,
7998 },
7999 Invisible::Whitespace {
8000 line_offset: tab_size as usize + 7,
8001 },
8002 ];
8003 let expected_invisibles = std::iter::once(repeated_invisibles)
8004 .cycle()
8005 .take(9)
8006 .flatten()
8007 .collect::<Vec<_>>();
8008 assert_eq!(
8009 expected_invisibles.len(),
8010 input_text
8011 .chars()
8012 .filter(|initial_char| initial_char.is_whitespace())
8013 .count(),
8014 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
8015 );
8016 info!("Expected invisibles: {expected_invisibles:?}");
8017
8018 init_test(cx, |_| {});
8019
8020 // Put the same string with repeating whitespace pattern into editors of various size,
8021 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
8022 let resize_step = 10.0;
8023 let mut editor_width = 200.0;
8024 while editor_width <= 1000.0 {
8025 for show_line_numbers in [true, false] {
8026 update_test_language_settings(cx, |s| {
8027 s.defaults.tab_size = NonZeroU32::new(tab_size);
8028 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
8029 s.defaults.preferred_line_length = Some(editor_width as u32);
8030 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
8031 });
8032
8033 let actual_invisibles = collect_invisibles_from_new_editor(
8034 cx,
8035 EditorMode::Full,
8036 &input_text,
8037 px(editor_width),
8038 show_line_numbers,
8039 );
8040
8041 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
8042 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
8043 let mut i = 0;
8044 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
8045 i = actual_index;
8046 match expected_invisibles.get(i) {
8047 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
8048 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
8049 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
8050 _ => {
8051 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
8052 }
8053 },
8054 None => {
8055 panic!("Unexpected extra invisible {actual_invisible:?} at index {i}")
8056 }
8057 }
8058 }
8059 let missing_expected_invisibles = &expected_invisibles[i + 1..];
8060 assert!(
8061 missing_expected_invisibles.is_empty(),
8062 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
8063 );
8064
8065 editor_width += resize_step;
8066 }
8067 }
8068 }
8069
8070 fn collect_invisibles_from_new_editor(
8071 cx: &mut TestAppContext,
8072 editor_mode: EditorMode,
8073 input_text: &str,
8074 editor_width: Pixels,
8075 show_line_numbers: bool,
8076 ) -> Vec<Invisible> {
8077 info!(
8078 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
8079 editor_width.0
8080 );
8081 let window = cx.add_window(|cx| {
8082 let buffer = MultiBuffer::build_simple(input_text, cx);
8083 Editor::new(editor_mode, buffer, None, true, cx)
8084 });
8085 let cx = &mut VisualTestContext::from_window(*window, cx);
8086 let editor = window.root(cx).unwrap();
8087
8088 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
8089 window
8090 .update(cx, |editor, cx| {
8091 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
8092 editor.set_wrap_width(Some(editor_width), cx);
8093 editor.set_show_line_numbers(show_line_numbers, cx);
8094 })
8095 .unwrap();
8096 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
8097 EditorElement::new(&editor, style)
8098 });
8099 state
8100 .position_map
8101 .line_layouts
8102 .iter()
8103 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
8104 .cloned()
8105 .collect()
8106 }
8107}