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, notifications::NotifyTaskExt, 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_notify_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_notify_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_notify_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_notify_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_notify_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_notify_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_notify_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, LineNumberLayout>,
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 let scroll_position_row =
547 position_map.scroll_pixel_position.y / position_map.line_height;
548 let display_row = (((event.position - gutter_hitbox.bounds.origin).y
549 + position_map.scroll_pixel_position.y)
550 / position_map.line_height)
551 as u32;
552 let multi_buffer_row = position_map
553 .snapshot
554 .display_point_to_point(
555 DisplayPoint::new(DisplayRow(display_row), 0),
556 Bias::Right,
557 )
558 .row;
559 let line_offset_from_top = display_row - scroll_position_row as u32;
560 // if double click is made without alt, open the corresponding excerp
561 editor.open_excerpts_common(
562 Some(JumpData::MultiBufferRow {
563 row: MultiBufferRow(multi_buffer_row),
564 line_offset_from_top,
565 }),
566 false,
567 cx,
568 );
569 return;
570 }
571 }
572 }
573 }
574
575 let point_for_position =
576 position_map.point_for_position(text_hitbox.bounds, event.position);
577 let position = point_for_position.previous_valid;
578 if modifiers.shift && modifiers.alt {
579 editor.select(
580 SelectPhase::BeginColumnar {
581 position,
582 reset: false,
583 goal_column: point_for_position.exact_unclipped.column(),
584 },
585 cx,
586 );
587 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
588 {
589 editor.select(
590 SelectPhase::Extend {
591 position,
592 click_count,
593 },
594 cx,
595 );
596 } else {
597 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
598 let multi_cursor_modifier = match multi_cursor_setting {
599 MultiCursorModifier::Alt => modifiers.alt,
600 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
601 };
602 editor.select(
603 SelectPhase::Begin {
604 position,
605 add: multi_cursor_modifier,
606 click_count,
607 },
608 cx,
609 );
610 }
611 cx.stop_propagation();
612
613 if !is_singleton {
614 let display_row = (((event.position - gutter_hitbox.bounds.origin).y
615 + position_map.scroll_pixel_position.y)
616 / position_map.line_height) as u32;
617 let multi_buffer_row = position_map
618 .snapshot
619 .display_point_to_point(DisplayPoint::new(DisplayRow(display_row), 0), Bias::Right)
620 .row;
621 if line_numbers
622 .get(&MultiBufferRow(multi_buffer_row))
623 .and_then(|line_number| line_number.hitbox.as_ref())
624 .is_some_and(|hitbox| hitbox.contains(&event.position))
625 {
626 let scroll_position_row =
627 position_map.scroll_pixel_position.y / position_map.line_height;
628 let line_offset_from_top = display_row - scroll_position_row as u32;
629
630 editor.open_excerpts_common(
631 Some(JumpData::MultiBufferRow {
632 row: MultiBufferRow(multi_buffer_row),
633 line_offset_from_top,
634 }),
635 modifiers.alt,
636 cx,
637 );
638 cx.stop_propagation();
639 }
640 }
641 }
642
643 fn mouse_right_down(
644 editor: &mut Editor,
645 event: &MouseDownEvent,
646 position_map: &PositionMap,
647 text_hitbox: &Hitbox,
648 cx: &mut ViewContext<Editor>,
649 ) {
650 if !text_hitbox.is_hovered(cx) {
651 return;
652 }
653 let point_for_position =
654 position_map.point_for_position(text_hitbox.bounds, event.position);
655 mouse_context_menu::deploy_context_menu(
656 editor,
657 Some(event.position),
658 point_for_position.previous_valid,
659 cx,
660 );
661 cx.stop_propagation();
662 }
663
664 fn mouse_middle_down(
665 editor: &mut Editor,
666 event: &MouseDownEvent,
667 position_map: &PositionMap,
668 text_hitbox: &Hitbox,
669 cx: &mut ViewContext<Editor>,
670 ) {
671 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
672 return;
673 }
674
675 let point_for_position =
676 position_map.point_for_position(text_hitbox.bounds, event.position);
677 let position = point_for_position.previous_valid;
678
679 editor.select(
680 SelectPhase::BeginColumnar {
681 position,
682 reset: true,
683 goal_column: point_for_position.exact_unclipped.column(),
684 },
685 cx,
686 );
687 }
688
689 fn mouse_up(
690 editor: &mut Editor,
691 event: &MouseUpEvent,
692 position_map: &PositionMap,
693 text_hitbox: &Hitbox,
694 cx: &mut ViewContext<Editor>,
695 ) {
696 let end_selection = editor.has_pending_selection();
697 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
698
699 if end_selection {
700 editor.select(SelectPhase::End, cx);
701 }
702
703 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
704 let multi_cursor_modifier = match multi_cursor_setting {
705 MultiCursorModifier::Alt => event.modifiers.secondary(),
706 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
707 };
708
709 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
710 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
711 editor.handle_click_hovered_link(point, event.modifiers, cx);
712
713 cx.stop_propagation();
714 } else if end_selection && pending_nonempty_selections {
715 cx.stop_propagation();
716 } else if cfg!(any(target_os = "linux", target_os = "freebsd"))
717 && event.button == MouseButton::Middle
718 {
719 if !text_hitbox.is_hovered(cx) || editor.read_only(cx) {
720 return;
721 }
722
723 #[cfg(any(target_os = "linux", target_os = "freebsd"))]
724 if EditorSettings::get_global(cx).middle_click_paste {
725 if let Some(text) = cx.read_from_primary().and_then(|item| item.text()) {
726 let point_for_position =
727 position_map.point_for_position(text_hitbox.bounds, event.position);
728 let position = point_for_position.previous_valid;
729
730 editor.select(
731 SelectPhase::Begin {
732 position,
733 add: false,
734 click_count: 1,
735 },
736 cx,
737 );
738 editor.insert(&text, cx);
739 }
740 cx.stop_propagation()
741 }
742 }
743 }
744
745 fn mouse_dragged(
746 editor: &mut Editor,
747 event: &MouseMoveEvent,
748 position_map: &PositionMap,
749 text_bounds: Bounds<Pixels>,
750 cx: &mut ViewContext<Editor>,
751 ) {
752 if !editor.has_pending_selection() {
753 return;
754 }
755
756 let point_for_position = position_map.point_for_position(text_bounds, event.position);
757 let mut scroll_delta = gpui::Point::<f32>::default();
758 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
759 let top = text_bounds.origin.y + vertical_margin;
760 let bottom = text_bounds.bottom_left().y - vertical_margin;
761 if event.position.y < top {
762 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
763 }
764 if event.position.y > bottom {
765 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
766 }
767
768 // We need horizontal width of text
769 let style = editor.style.clone().unwrap_or_default();
770 let font_id = cx.text_system().resolve_font(&style.text.font());
771 let font_size = style.text.font_size.to_pixels(cx.rem_size());
772 let em_width = cx
773 .text_system()
774 .typographic_bounds(font_id, font_size, 'm')
775 .unwrap()
776 .size
777 .width;
778
779 let scroll_margin_x = EditorSettings::get_global(cx).horizontal_scroll_margin;
780
781 let scroll_space: Pixels = scroll_margin_x * em_width;
782
783 let left = text_bounds.origin.x + scroll_space;
784 let right = text_bounds.top_right().x - scroll_space;
785
786 if event.position.x < left {
787 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
788 }
789 if event.position.x > right {
790 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
791 }
792
793 editor.select(
794 SelectPhase::Update {
795 position: point_for_position.previous_valid,
796 goal_column: point_for_position.exact_unclipped.column(),
797 scroll_delta,
798 },
799 cx,
800 );
801 }
802
803 fn mouse_moved(
804 editor: &mut Editor,
805 event: &MouseMoveEvent,
806 position_map: &PositionMap,
807 text_hitbox: &Hitbox,
808 gutter_hitbox: &Hitbox,
809 cx: &mut ViewContext<Editor>,
810 ) {
811 let modifiers = event.modifiers;
812 let gutter_hovered = gutter_hitbox.is_hovered(cx);
813 editor.set_gutter_hovered(gutter_hovered, cx);
814
815 // Don't trigger hover popover if mouse is hovering over context menu
816 if text_hitbox.is_hovered(cx) {
817 let point_for_position =
818 position_map.point_for_position(text_hitbox.bounds, event.position);
819
820 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
821
822 if let Some(point) = point_for_position.as_valid() {
823 let anchor = position_map
824 .snapshot
825 .buffer_snapshot
826 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
827 hover_at(editor, Some(anchor), cx);
828 Self::update_visible_cursor(editor, point, position_map, cx);
829 } else {
830 hover_at(editor, None, cx);
831 }
832 } else {
833 editor.hide_hovered_link(cx);
834 hover_at(editor, None, cx);
835 if gutter_hovered {
836 cx.stop_propagation();
837 }
838 }
839 }
840
841 fn update_visible_cursor(
842 editor: &mut Editor,
843 point: DisplayPoint,
844 position_map: &PositionMap,
845 cx: &mut ViewContext<Editor>,
846 ) {
847 let snapshot = &position_map.snapshot;
848 let Some(hub) = editor.collaboration_hub() else {
849 return;
850 };
851 let start = snapshot.display_snapshot.clip_point(
852 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
853 Bias::Left,
854 );
855 let end = snapshot.display_snapshot.clip_point(
856 DisplayPoint::new(
857 point.row(),
858 (point.column() + 1).min(snapshot.line_len(point.row())),
859 ),
860 Bias::Right,
861 );
862
863 let range = snapshot
864 .buffer_snapshot
865 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
866 ..snapshot
867 .buffer_snapshot
868 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
869
870 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
871 return;
872 };
873 let key = crate::HoveredCursor {
874 replica_id: selection.replica_id,
875 selection_id: selection.selection.id,
876 };
877 editor.hovered_cursors.insert(
878 key.clone(),
879 cx.spawn(|editor, mut cx| async move {
880 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
881 editor
882 .update(&mut cx, |editor, cx| {
883 editor.hovered_cursors.remove(&key);
884 cx.notify();
885 })
886 .ok();
887 }),
888 );
889 cx.notify()
890 }
891
892 #[allow(clippy::too_many_arguments)]
893 fn layout_selections(
894 &self,
895 start_anchor: Anchor,
896 end_anchor: Anchor,
897 local_selections: &[Selection<Point>],
898 snapshot: &EditorSnapshot,
899 start_row: DisplayRow,
900 end_row: DisplayRow,
901 cx: &mut WindowContext,
902 ) -> (
903 Vec<(PlayerColor, Vec<SelectionLayout>)>,
904 BTreeMap<DisplayRow, bool>,
905 Option<DisplayPoint>,
906 ) {
907 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
908 let mut active_rows = BTreeMap::new();
909 let mut newest_selection_head = None;
910 self.editor.update(cx, |editor, cx| {
911 if editor.show_local_selections {
912 let mut layouts = Vec::new();
913 let newest = editor.selections.newest(cx);
914 for selection in local_selections.iter().cloned() {
915 let is_empty = selection.start == selection.end;
916 let is_newest = selection == newest;
917
918 let layout = SelectionLayout::new(
919 selection,
920 editor.selections.line_mode,
921 editor.cursor_shape,
922 &snapshot.display_snapshot,
923 is_newest,
924 editor.leader_peer_id.is_none(),
925 None,
926 );
927 if is_newest {
928 newest_selection_head = Some(layout.head);
929 }
930
931 for row in cmp::max(layout.active_rows.start.0, start_row.0)
932 ..=cmp::min(layout.active_rows.end.0, end_row.0)
933 {
934 let contains_non_empty_selection =
935 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
936 *contains_non_empty_selection |= !is_empty;
937 }
938 layouts.push(layout);
939 }
940
941 let player = if editor.read_only(cx) {
942 cx.theme().players().read_only()
943 } else {
944 self.style.local_player
945 };
946
947 selections.push((player, layouts));
948 }
949
950 if let Some(collaboration_hub) = &editor.collaboration_hub {
951 // When following someone, render the local selections in their color.
952 if let Some(leader_id) = editor.leader_peer_id {
953 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id)
954 {
955 if let Some(participant_index) = collaboration_hub
956 .user_participant_indices(cx)
957 .get(&collaborator.user_id)
958 {
959 if let Some((local_selection_style, _)) = selections.first_mut() {
960 *local_selection_style = cx
961 .theme()
962 .players()
963 .color_for_participant(participant_index.0);
964 }
965 }
966 }
967 }
968
969 let mut remote_selections = HashMap::default();
970 for selection in snapshot.remote_selections_in_range(
971 &(start_anchor..end_anchor),
972 collaboration_hub.as_ref(),
973 cx,
974 ) {
975 let selection_style =
976 Self::get_participant_color(selection.participant_index, cx);
977
978 // Don't re-render the leader's selections, since the local selections
979 // match theirs.
980 if Some(selection.peer_id) == editor.leader_peer_id {
981 continue;
982 }
983 let key = HoveredCursor {
984 replica_id: selection.replica_id,
985 selection_id: selection.selection.id,
986 };
987
988 let is_shown =
989 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
990
991 remote_selections
992 .entry(selection.replica_id)
993 .or_insert((selection_style, Vec::new()))
994 .1
995 .push(SelectionLayout::new(
996 selection.selection,
997 selection.line_mode,
998 selection.cursor_shape,
999 &snapshot.display_snapshot,
1000 false,
1001 false,
1002 if is_shown { selection.user_name } else { None },
1003 ));
1004 }
1005
1006 selections.extend(remote_selections.into_values());
1007 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
1008 let player = if editor.read_only(cx) {
1009 cx.theme().players().read_only()
1010 } else {
1011 self.style.local_player
1012 };
1013 let layouts = snapshot
1014 .buffer_snapshot
1015 .selections_in_range(&(start_anchor..end_anchor), true)
1016 .map(move |(_, line_mode, cursor_shape, selection)| {
1017 SelectionLayout::new(
1018 selection,
1019 line_mode,
1020 cursor_shape,
1021 &snapshot.display_snapshot,
1022 false,
1023 false,
1024 None,
1025 )
1026 })
1027 .collect::<Vec<_>>();
1028 selections.push((player, layouts));
1029 }
1030 });
1031 (selections, active_rows, newest_selection_head)
1032 }
1033
1034 fn collect_cursors(
1035 &self,
1036 snapshot: &EditorSnapshot,
1037 cx: &mut WindowContext,
1038 ) -> Vec<(DisplayPoint, Hsla)> {
1039 let editor = self.editor.read(cx);
1040 let mut cursors = Vec::new();
1041 let mut skip_local = false;
1042 let mut add_cursor = |anchor: Anchor, color| {
1043 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
1044 };
1045 // Remote cursors
1046 if let Some(collaboration_hub) = &editor.collaboration_hub {
1047 for remote_selection in snapshot.remote_selections_in_range(
1048 &(Anchor::min()..Anchor::max()),
1049 collaboration_hub.deref(),
1050 cx,
1051 ) {
1052 let color = Self::get_participant_color(remote_selection.participant_index, cx);
1053 add_cursor(remote_selection.selection.head(), color.cursor);
1054 if Some(remote_selection.peer_id) == editor.leader_peer_id {
1055 skip_local = true;
1056 }
1057 }
1058 }
1059 // Local cursors
1060 if !skip_local {
1061 let color = cx.theme().players().local().cursor;
1062 editor.selections.disjoint.iter().for_each(|selection| {
1063 add_cursor(selection.head(), color);
1064 });
1065 if let Some(ref selection) = editor.selections.pending_anchor() {
1066 add_cursor(selection.head(), color);
1067 }
1068 }
1069 cursors
1070 }
1071
1072 #[allow(clippy::too_many_arguments)]
1073 fn layout_visible_cursors(
1074 &self,
1075 snapshot: &EditorSnapshot,
1076 selections: &[(PlayerColor, Vec<SelectionLayout>)],
1077 block_start_rows: &HashSet<DisplayRow>,
1078 visible_display_row_range: Range<DisplayRow>,
1079 line_layouts: &[LineWithInvisibles],
1080 text_hitbox: &Hitbox,
1081 content_origin: gpui::Point<Pixels>,
1082 scroll_position: gpui::Point<f32>,
1083 scroll_pixel_position: gpui::Point<Pixels>,
1084 line_height: Pixels,
1085 em_width: Pixels,
1086 em_advance: Pixels,
1087 autoscroll_containing_element: bool,
1088 cx: &mut WindowContext,
1089 ) -> Vec<CursorLayout> {
1090 let mut autoscroll_bounds = None;
1091 let cursor_layouts = self.editor.update(cx, |editor, cx| {
1092 let mut cursors = Vec::new();
1093 for (player_color, selections) in selections {
1094 for selection in selections {
1095 let cursor_position = selection.head;
1096
1097 let in_range = visible_display_row_range.contains(&cursor_position.row());
1098 if (selection.is_local && !editor.show_local_cursors(cx))
1099 || !in_range
1100 || block_start_rows.contains(&cursor_position.row())
1101 {
1102 continue;
1103 }
1104
1105 let cursor_row_layout = &line_layouts
1106 [cursor_position.row().minus(visible_display_row_range.start) as usize];
1107 let cursor_column = cursor_position.column() as usize;
1108
1109 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1110 let mut block_width =
1111 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1112 if block_width == Pixels::ZERO {
1113 block_width = em_advance;
1114 }
1115 let block_text = if let CursorShape::Block = selection.cursor_shape {
1116 snapshot
1117 .grapheme_at(cursor_position)
1118 .or_else(|| {
1119 if cursor_column == 0 {
1120 snapshot.placeholder_text().and_then(|s| {
1121 s.graphemes(true).next().map(|s| s.to_string().into())
1122 })
1123 } else {
1124 None
1125 }
1126 })
1127 .and_then(|text| {
1128 let len = text.len();
1129
1130 let font = cursor_row_layout
1131 .font_id_for_index(cursor_column)
1132 .and_then(|cursor_font_id| {
1133 cx.text_system().get_font_for_id(cursor_font_id)
1134 })
1135 .unwrap_or(self.style.text.font());
1136
1137 // Invert the text color for the block cursor. Ensure that the text
1138 // color is opaque enough to be visible against the background color.
1139 //
1140 // 0.75 is an arbitrary threshold to determine if the background color is
1141 // opaque enough to use as a text color.
1142 //
1143 // TODO: In the future we should ensure themes have a `text_inverse` color.
1144 let color = if cx.theme().colors().editor_background.a < 0.75 {
1145 match cx.theme().appearance {
1146 Appearance::Dark => Hsla::black(),
1147 Appearance::Light => Hsla::white(),
1148 }
1149 } else {
1150 cx.theme().colors().editor_background
1151 };
1152
1153 cx.text_system()
1154 .shape_line(
1155 text,
1156 cursor_row_layout.font_size,
1157 &[TextRun {
1158 len,
1159 font,
1160 color,
1161 background_color: None,
1162 strikethrough: None,
1163 underline: None,
1164 }],
1165 )
1166 .log_err()
1167 })
1168 } else {
1169 None
1170 };
1171
1172 let x = cursor_character_x - scroll_pixel_position.x;
1173 let y = (cursor_position.row().as_f32()
1174 - scroll_pixel_position.y / line_height)
1175 * line_height;
1176 if selection.is_newest {
1177 editor.pixel_position_of_newest_cursor = Some(point(
1178 text_hitbox.origin.x + x + block_width / 2.,
1179 text_hitbox.origin.y + y + line_height / 2.,
1180 ));
1181
1182 if autoscroll_containing_element {
1183 let top = text_hitbox.origin.y
1184 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1185 * line_height;
1186 let left = text_hitbox.origin.x
1187 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1188 .max(0.)
1189 * em_width;
1190
1191 let bottom = text_hitbox.origin.y
1192 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1193 * line_height;
1194 let right = text_hitbox.origin.x
1195 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1196 * em_width;
1197
1198 autoscroll_bounds =
1199 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1200 }
1201 }
1202
1203 let mut cursor = CursorLayout {
1204 color: player_color.cursor,
1205 block_width,
1206 origin: point(x, y),
1207 line_height,
1208 shape: selection.cursor_shape,
1209 block_text,
1210 cursor_name: None,
1211 };
1212 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1213 string: name,
1214 color: self.style.background,
1215 is_top_row: cursor_position.row().0 == 0,
1216 });
1217 cursor.layout(content_origin, cursor_name, cx);
1218 cursors.push(cursor);
1219 }
1220 }
1221 cursors
1222 });
1223
1224 if let Some(bounds) = autoscroll_bounds {
1225 cx.request_autoscroll(bounds);
1226 }
1227
1228 cursor_layouts
1229 }
1230
1231 fn layout_scrollbars(
1232 &self,
1233 snapshot: &EditorSnapshot,
1234 scrollbar_range_data: ScrollbarRangeData,
1235 scroll_position: gpui::Point<f32>,
1236 non_visible_cursors: bool,
1237 cx: &mut WindowContext,
1238 ) -> AxisPair<Option<ScrollbarLayout>> {
1239 let letter_size = scrollbar_range_data.letter_size;
1240 let text_units_per_page = axis_pair(
1241 scrollbar_range_data.scrollbar_bounds.size.width / letter_size.width,
1242 scrollbar_range_data.scrollbar_bounds.size.height / letter_size.height,
1243 );
1244
1245 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1246 let show_scrollbars = self.editor.read(cx).show_scrollbars
1247 && match scrollbar_settings.show {
1248 ShowScrollbar::Auto => {
1249 let editor = self.editor.read(cx);
1250 let is_singleton = editor.is_singleton(cx);
1251 // Git
1252 (is_singleton && scrollbar_settings.git_diff && !snapshot.diff_map.is_empty())
1253 ||
1254 // Buffer Search Results
1255 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1256 ||
1257 // Selected Symbol Occurrences
1258 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1259 ||
1260 // Diagnostics
1261 (is_singleton && scrollbar_settings.diagnostics != ScrollbarDiagnostics::None && snapshot.buffer_snapshot.has_diagnostics())
1262 ||
1263 // Cursors out of sight
1264 non_visible_cursors
1265 ||
1266 // Scrollmanager
1267 editor.scroll_manager.scrollbars_visible()
1268 }
1269 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1270 ShowScrollbar::Always => true,
1271 ShowScrollbar::Never => false,
1272 };
1273
1274 let axes: AxisPair<bool> = scrollbar_settings.axes.into();
1275
1276 if snapshot.mode != EditorMode::Full {
1277 return axis_pair(None, None);
1278 }
1279
1280 let visible_range = axis_pair(
1281 axes.horizontal
1282 .then(|| scroll_position.x..scroll_position.x + text_units_per_page.horizontal),
1283 axes.vertical
1284 .then(|| scroll_position.y..scroll_position.y + text_units_per_page.vertical),
1285 );
1286
1287 // If a drag took place after we started dragging the scrollbar,
1288 // cancel the scrollbar drag.
1289 if cx.has_active_drag() {
1290 self.editor.update(cx, |editor, cx| {
1291 editor
1292 .scroll_manager
1293 .set_is_dragging_scrollbar(Axis::Horizontal, false, cx);
1294 editor
1295 .scroll_manager
1296 .set_is_dragging_scrollbar(Axis::Vertical, false, cx);
1297 });
1298 }
1299
1300 let text_bounds = scrollbar_range_data.scrollbar_bounds;
1301
1302 let track_bounds = axis_pair(
1303 axes.horizontal.then(|| {
1304 Bounds::from_corners(
1305 point(
1306 text_bounds.bottom_left().x,
1307 text_bounds.bottom_left().y - self.style.scrollbar_width,
1308 ),
1309 point(
1310 text_bounds.bottom_right().x
1311 - if axes.vertical {
1312 self.style.scrollbar_width
1313 } else {
1314 px(0.)
1315 },
1316 text_bounds.bottom_right().y,
1317 ),
1318 )
1319 }),
1320 axes.vertical.then(|| {
1321 Bounds::from_corners(
1322 point(self.scrollbar_left(&text_bounds), text_bounds.origin.y),
1323 text_bounds.bottom_right(),
1324 )
1325 }),
1326 );
1327
1328 let scroll_range_size = scrollbar_range_data.scroll_range.size;
1329 let total_text_units = axis_pair(
1330 Some(scroll_range_size.width / letter_size.width),
1331 Some(scroll_range_size.height / letter_size.height),
1332 );
1333
1334 let thumb_size = axis_pair(
1335 total_text_units
1336 .horizontal
1337 .zip(track_bounds.horizontal)
1338 .and_then(|(total_text_units_x, track_bounds_x)| {
1339 if text_units_per_page.horizontal >= total_text_units_x {
1340 return None;
1341 }
1342
1343 let thumb_percent =
1344 (text_units_per_page.horizontal / total_text_units_x).min(1.);
1345
1346 Some(track_bounds_x.size.width * thumb_percent)
1347 }),
1348 total_text_units.vertical.zip(track_bounds.vertical).map(
1349 |(total_text_units_y, track_bounds_y)| {
1350 let thumb_percent = (text_units_per_page.vertical / total_text_units_y).min(1.);
1351
1352 track_bounds_y.size.height * thumb_percent
1353 },
1354 ),
1355 );
1356
1357 // NOTE: Space not taken by track bounds divided by text units not on screen
1358 let text_unit_size = axis_pair(
1359 thumb_size
1360 .horizontal
1361 .zip(track_bounds.horizontal)
1362 .zip(total_text_units.horizontal)
1363 .map(|((thumb_size, track_bounds), total_text_units)| {
1364 (track_bounds.size.width - thumb_size)
1365 / (total_text_units - text_units_per_page.horizontal).max(0.)
1366 }),
1367 thumb_size
1368 .vertical
1369 .zip(track_bounds.vertical)
1370 .zip(total_text_units.vertical)
1371 .map(|((thumb_size, track_bounds), total_text_units)| {
1372 (track_bounds.size.height - thumb_size)
1373 / (total_text_units - text_units_per_page.vertical).max(0.)
1374 }),
1375 );
1376
1377 let horizontal_scrollbar = track_bounds
1378 .horizontal
1379 .zip(visible_range.horizontal)
1380 .zip(text_unit_size.horizontal)
1381 .zip(thumb_size.horizontal)
1382 .map(
1383 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1384 hitbox: cx.insert_hitbox(track_bounds, false),
1385 visible_range,
1386 text_unit_size,
1387 visible: show_scrollbars,
1388 thumb_size,
1389 axis: Axis::Horizontal,
1390 },
1391 );
1392
1393 let vertical_scrollbar = track_bounds
1394 .vertical
1395 .zip(visible_range.vertical)
1396 .zip(text_unit_size.vertical)
1397 .zip(thumb_size.vertical)
1398 .map(
1399 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1400 hitbox: cx.insert_hitbox(track_bounds, false),
1401 visible_range,
1402 text_unit_size,
1403 visible: show_scrollbars,
1404 thumb_size,
1405 axis: Axis::Vertical,
1406 },
1407 );
1408
1409 axis_pair(horizontal_scrollbar, vertical_scrollbar)
1410 }
1411
1412 #[allow(clippy::too_many_arguments)]
1413 fn prepaint_crease_toggles(
1414 &self,
1415 crease_toggles: &mut [Option<AnyElement>],
1416 line_height: Pixels,
1417 gutter_dimensions: &GutterDimensions,
1418 gutter_settings: crate::editor_settings::Gutter,
1419 scroll_pixel_position: gpui::Point<Pixels>,
1420 gutter_hitbox: &Hitbox,
1421 cx: &mut WindowContext,
1422 ) {
1423 for (ix, crease_toggle) in crease_toggles.iter_mut().enumerate() {
1424 if let Some(crease_toggle) = crease_toggle {
1425 debug_assert!(gutter_settings.folds);
1426 let available_space = size(
1427 AvailableSpace::MinContent,
1428 AvailableSpace::Definite(line_height * 0.55),
1429 );
1430 let crease_toggle_size = crease_toggle.layout_as_root(available_space, cx);
1431
1432 let position = point(
1433 gutter_dimensions.width - gutter_dimensions.right_padding,
1434 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1435 );
1436 let centering_offset = point(
1437 (gutter_dimensions.fold_area_width() - crease_toggle_size.width) / 2.,
1438 (line_height - crease_toggle_size.height) / 2.,
1439 );
1440 let origin = gutter_hitbox.origin + position + centering_offset;
1441 crease_toggle.prepaint_as_root(origin, available_space, cx);
1442 }
1443 }
1444 }
1445
1446 #[allow(clippy::too_many_arguments)]
1447 fn prepaint_crease_trailers(
1448 &self,
1449 trailers: Vec<Option<AnyElement>>,
1450 lines: &[LineWithInvisibles],
1451 line_height: Pixels,
1452 content_origin: gpui::Point<Pixels>,
1453 scroll_pixel_position: gpui::Point<Pixels>,
1454 em_width: Pixels,
1455 cx: &mut WindowContext,
1456 ) -> Vec<Option<CreaseTrailerLayout>> {
1457 trailers
1458 .into_iter()
1459 .enumerate()
1460 .map(|(ix, element)| {
1461 let mut element = element?;
1462 let available_space = size(
1463 AvailableSpace::MinContent,
1464 AvailableSpace::Definite(line_height),
1465 );
1466 let size = element.layout_as_root(available_space, cx);
1467
1468 let line = &lines[ix];
1469 let padding = if line.width == Pixels::ZERO {
1470 Pixels::ZERO
1471 } else {
1472 4. * em_width
1473 };
1474 let position = point(
1475 scroll_pixel_position.x + line.width + padding,
1476 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1477 );
1478 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1479 let origin = content_origin + position + centering_offset;
1480 element.prepaint_as_root(origin, available_space, cx);
1481 Some(CreaseTrailerLayout {
1482 element,
1483 bounds: Bounds::new(origin, size),
1484 })
1485 })
1486 .collect()
1487 }
1488
1489 // Folds contained in a hunk are ignored apart from shrinking visual size
1490 // If a fold contains any hunks then that fold line is marked as modified
1491 fn layout_gutter_git_hunks(
1492 &self,
1493 line_height: Pixels,
1494 gutter_hitbox: &Hitbox,
1495 display_rows: Range<DisplayRow>,
1496 anchor_range: Range<Anchor>,
1497 snapshot: &EditorSnapshot,
1498 cx: &mut WindowContext,
1499 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1500 let buffer_snapshot = &snapshot.buffer_snapshot;
1501 let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(snapshot);
1502 let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(snapshot);
1503
1504 let git_gutter_setting = ProjectSettings::get_global(cx)
1505 .git
1506 .git_gutter
1507 .unwrap_or_default();
1508
1509 self.editor.update(cx, |editor, cx| {
1510 let expanded_hunks = &editor.diff_map.hunks;
1511 let expanded_hunks_start_ix = expanded_hunks
1512 .binary_search_by(|hunk| {
1513 hunk.hunk_range
1514 .end
1515 .cmp(&anchor_range.start, &buffer_snapshot)
1516 .then(Ordering::Less)
1517 })
1518 .unwrap_err();
1519 let mut expanded_hunks = expanded_hunks[expanded_hunks_start_ix..].iter().peekable();
1520
1521 let mut display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)> = editor
1522 .diff_map
1523 .snapshot
1524 .diff_hunks_in_range(buffer_start..buffer_end, &buffer_snapshot)
1525 .filter_map(|hunk| {
1526 let display_hunk = diff_hunk_to_display(&hunk, snapshot);
1527
1528 if let DisplayDiffHunk::Unfolded {
1529 multi_buffer_range,
1530 status,
1531 ..
1532 } = &display_hunk
1533 {
1534 let mut is_expanded = false;
1535 while let Some(expanded_hunk) = expanded_hunks.peek() {
1536 match expanded_hunk
1537 .hunk_range
1538 .start
1539 .cmp(&multi_buffer_range.start, &buffer_snapshot)
1540 {
1541 Ordering::Less => {
1542 expanded_hunks.next();
1543 }
1544 Ordering::Equal => {
1545 is_expanded = true;
1546 break;
1547 }
1548 Ordering::Greater => {
1549 break;
1550 }
1551 }
1552 }
1553 match status {
1554 DiffHunkStatus::Added => {}
1555 DiffHunkStatus::Modified => {}
1556 DiffHunkStatus::Removed => {
1557 if is_expanded {
1558 return None;
1559 }
1560 }
1561 }
1562 }
1563
1564 Some(display_hunk)
1565 })
1566 .dedup()
1567 .map(|hunk| (hunk, None))
1568 .collect();
1569
1570 if let GitGutterSetting::TrackedFiles = git_gutter_setting {
1571 for (hunk, hitbox) in &mut display_hunks {
1572 if let DisplayDiffHunk::Unfolded { .. } = hunk {
1573 let hunk_bounds = Self::diff_hunk_bounds(
1574 snapshot,
1575 line_height,
1576 gutter_hitbox.bounds,
1577 &hunk,
1578 );
1579 *hitbox = Some(cx.insert_hitbox(hunk_bounds, true));
1580 };
1581 }
1582 }
1583
1584 display_hunks
1585 })
1586 }
1587
1588 #[allow(clippy::too_many_arguments)]
1589 fn layout_inline_blame(
1590 &self,
1591 display_row: DisplayRow,
1592 display_snapshot: &DisplaySnapshot,
1593 line_layout: &LineWithInvisibles,
1594 crease_trailer: Option<&CreaseTrailerLayout>,
1595 em_width: Pixels,
1596 content_origin: gpui::Point<Pixels>,
1597 scroll_pixel_position: gpui::Point<Pixels>,
1598 line_height: Pixels,
1599 cx: &mut WindowContext,
1600 ) -> Option<AnyElement> {
1601 if !self
1602 .editor
1603 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1604 {
1605 return None;
1606 }
1607
1608 let workspace = self
1609 .editor
1610 .read(cx)
1611 .workspace
1612 .as_ref()
1613 .map(|(w, _)| w.clone());
1614
1615 let display_point = DisplayPoint::new(display_row, 0);
1616 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1617
1618 let blame = self.editor.read(cx).blame.clone()?;
1619 let blame_entry = blame
1620 .update(cx, |blame, cx| {
1621 blame.blame_for_rows([Some(buffer_row)], cx).next()
1622 })
1623 .flatten()?;
1624
1625 let mut element =
1626 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1627
1628 let start_y = content_origin.y
1629 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1630
1631 let start_x = {
1632 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1633
1634 let line_end = if let Some(crease_trailer) = crease_trailer {
1635 crease_trailer.bounds.right()
1636 } else {
1637 content_origin.x - scroll_pixel_position.x + line_layout.width
1638 };
1639 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1640
1641 let min_column_in_pixels = ProjectSettings::get_global(cx)
1642 .git
1643 .inline_blame
1644 .and_then(|settings| settings.min_column)
1645 .map(|col| self.column_pixels(col as usize, cx))
1646 .unwrap_or(px(0.));
1647 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1648
1649 cmp::max(padded_line_end, min_start)
1650 };
1651
1652 let absolute_offset = point(start_x, start_y);
1653 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1654
1655 Some(element)
1656 }
1657
1658 #[allow(clippy::too_many_arguments)]
1659 fn layout_blame_entries(
1660 &self,
1661 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1662 em_width: Pixels,
1663 scroll_position: gpui::Point<f32>,
1664 line_height: Pixels,
1665 gutter_hitbox: &Hitbox,
1666 max_width: Option<Pixels>,
1667 cx: &mut WindowContext,
1668 ) -> Option<Vec<AnyElement>> {
1669 if !self
1670 .editor
1671 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1672 {
1673 return None;
1674 }
1675
1676 let blame = self.editor.read(cx).blame.clone()?;
1677 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1678 blame.blame_for_rows(buffer_rows, cx).collect()
1679 });
1680
1681 let width = if let Some(max_width) = max_width {
1682 AvailableSpace::Definite(max_width)
1683 } else {
1684 AvailableSpace::MaxContent
1685 };
1686 let scroll_top = scroll_position.y * line_height;
1687 let start_x = em_width;
1688
1689 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1690
1691 let shaped_lines = blamed_rows
1692 .into_iter()
1693 .enumerate()
1694 .flat_map(|(ix, blame_entry)| {
1695 if let Some(blame_entry) = blame_entry {
1696 let mut element = render_blame_entry(
1697 ix,
1698 &blame,
1699 blame_entry,
1700 &self.style,
1701 &mut last_used_color,
1702 self.editor.clone(),
1703 cx,
1704 );
1705
1706 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1707 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1708
1709 element.prepaint_as_root(
1710 absolute_offset,
1711 size(width, AvailableSpace::MinContent),
1712 cx,
1713 );
1714
1715 Some(element)
1716 } else {
1717 None
1718 }
1719 })
1720 .collect();
1721
1722 Some(shaped_lines)
1723 }
1724
1725 #[allow(clippy::too_many_arguments)]
1726 fn layout_indent_guides(
1727 &self,
1728 content_origin: gpui::Point<Pixels>,
1729 text_origin: gpui::Point<Pixels>,
1730 visible_buffer_range: Range<MultiBufferRow>,
1731 scroll_pixel_position: gpui::Point<Pixels>,
1732 line_height: Pixels,
1733 snapshot: &DisplaySnapshot,
1734 cx: &mut WindowContext,
1735 ) -> Option<Vec<IndentGuideLayout>> {
1736 let indent_guides = self.editor.update(cx, |editor, cx| {
1737 editor.indent_guides(visible_buffer_range, snapshot, cx)
1738 })?;
1739
1740 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1741 editor
1742 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1743 .unwrap_or_default()
1744 });
1745
1746 Some(
1747 indent_guides
1748 .into_iter()
1749 .enumerate()
1750 .filter_map(|(i, indent_guide)| {
1751 let single_indent_width =
1752 self.column_pixels(indent_guide.tab_size as usize, cx);
1753 let total_width = single_indent_width * indent_guide.depth as f32;
1754 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1755 if start_x >= text_origin.x {
1756 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1757 indent_guide.multibuffer_row_range.clone(),
1758 line_height,
1759 snapshot,
1760 );
1761
1762 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1763
1764 Some(IndentGuideLayout {
1765 origin: point(start_x, start_y),
1766 length,
1767 single_indent_width,
1768 depth: indent_guide.depth,
1769 active: active_indent_guide_indices.contains(&i),
1770 settings: indent_guide.settings,
1771 })
1772 } else {
1773 None
1774 }
1775 })
1776 .collect(),
1777 )
1778 }
1779
1780 fn calculate_indent_guide_bounds(
1781 row_range: Range<MultiBufferRow>,
1782 line_height: Pixels,
1783 snapshot: &DisplaySnapshot,
1784 ) -> (gpui::Pixels, gpui::Pixels) {
1785 let start_point = Point::new(row_range.start.0, 0);
1786 let end_point = Point::new(row_range.end.0, 0);
1787
1788 let row_range = start_point.to_display_point(snapshot).row()
1789 ..end_point.to_display_point(snapshot).row();
1790
1791 let mut prev_line = start_point;
1792 prev_line.row = prev_line.row.saturating_sub(1);
1793 let prev_line = prev_line.to_display_point(snapshot).row();
1794
1795 let mut cons_line = end_point;
1796 cons_line.row += 1;
1797 let cons_line = cons_line.to_display_point(snapshot).row();
1798
1799 let mut offset_y = row_range.start.0 as f32 * line_height;
1800 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1801
1802 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1803 if row_range.end == cons_line {
1804 length += line_height;
1805 }
1806
1807 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1808 // we want to extend the indent guide to the start of the block.
1809 let mut block_height = 0;
1810 let mut block_offset = 0;
1811 let mut found_excerpt_header = false;
1812 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1813 if matches!(block, Block::ExcerptBoundary { .. }) {
1814 found_excerpt_header = true;
1815 break;
1816 }
1817 block_offset += block.height();
1818 block_height += block.height();
1819 }
1820 if !found_excerpt_header {
1821 offset_y -= block_offset as f32 * line_height;
1822 length += block_height as f32 * line_height;
1823 }
1824
1825 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1826 // we want to ensure that the indent guide stops before the excerpt header.
1827 let mut block_height = 0;
1828 let mut found_excerpt_header = false;
1829 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1830 if matches!(block, Block::ExcerptBoundary { .. }) {
1831 found_excerpt_header = true;
1832 }
1833 block_height += block.height();
1834 }
1835 if found_excerpt_header {
1836 length -= block_height as f32 * line_height;
1837 }
1838
1839 (offset_y, length)
1840 }
1841
1842 #[allow(clippy::too_many_arguments)]
1843 fn layout_run_indicators(
1844 &self,
1845 line_height: Pixels,
1846 range: Range<DisplayRow>,
1847 scroll_pixel_position: gpui::Point<Pixels>,
1848 gutter_dimensions: &GutterDimensions,
1849 gutter_hitbox: &Hitbox,
1850 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1851 snapshot: &EditorSnapshot,
1852 cx: &mut WindowContext,
1853 ) -> Vec<AnyElement> {
1854 self.editor.update(cx, |editor, cx| {
1855 let active_task_indicator_row =
1856 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1857 deployed_from_indicator,
1858 actions,
1859 ..
1860 })) = editor.context_menu.borrow().as_ref()
1861 {
1862 actions
1863 .tasks
1864 .as_ref()
1865 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1866 .or(*deployed_from_indicator)
1867 } else {
1868 None
1869 };
1870
1871 let offset_range_start = snapshot
1872 .display_point_to_anchor(DisplayPoint::new(range.start, 0), Bias::Left)
1873 .to_offset(&snapshot.buffer_snapshot);
1874 let offset_range_end = snapshot
1875 .display_point_to_anchor(DisplayPoint::new(range.end, 0), Bias::Right)
1876 .to_offset(&snapshot.buffer_snapshot);
1877
1878 editor
1879 .tasks
1880 .iter()
1881 .filter_map(|(_, tasks)| {
1882 if tasks.offset.0 < offset_range_start || tasks.offset.0 >= offset_range_end {
1883 return None;
1884 }
1885 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1886 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1887 let buffer_folded = snapshot
1888 .buffer_snapshot
1889 .buffer_line_for_row(multibuffer_row)
1890 .map(|(buffer_snapshot, _)| buffer_snapshot.remote_id())
1891 .map(|buffer_id| editor.buffer_folded(buffer_id, cx))
1892 .unwrap_or(false);
1893 if buffer_folded {
1894 return None;
1895 }
1896
1897 if snapshot.is_line_folded(multibuffer_row) {
1898 // Skip folded indicators, unless it's the starting line of a fold.
1899 if multibuffer_row
1900 .0
1901 .checked_sub(1)
1902 .map_or(false, |previous_row| {
1903 snapshot.is_line_folded(MultiBufferRow(previous_row))
1904 })
1905 {
1906 return None;
1907 }
1908 }
1909 let display_row = multibuffer_point.to_display_point(snapshot).row();
1910 let button = editor.render_run_indicator(
1911 &self.style,
1912 Some(display_row) == active_task_indicator_row,
1913 display_row,
1914 cx,
1915 );
1916
1917 let button = prepaint_gutter_button(
1918 button,
1919 display_row,
1920 line_height,
1921 gutter_dimensions,
1922 scroll_pixel_position,
1923 gutter_hitbox,
1924 rows_with_hunk_bounds,
1925 cx,
1926 );
1927 Some(button)
1928 })
1929 .collect_vec()
1930 })
1931 }
1932
1933 #[allow(clippy::too_many_arguments)]
1934 fn layout_code_actions_indicator(
1935 &self,
1936 line_height: Pixels,
1937 newest_selection_head: DisplayPoint,
1938 scroll_pixel_position: gpui::Point<Pixels>,
1939 gutter_dimensions: &GutterDimensions,
1940 gutter_hitbox: &Hitbox,
1941 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1942 cx: &mut WindowContext,
1943 ) -> Option<AnyElement> {
1944 let mut active = false;
1945 let mut button = None;
1946 let row = newest_selection_head.row();
1947 self.editor.update(cx, |editor, cx| {
1948 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1949 deployed_from_indicator,
1950 ..
1951 })) = editor.context_menu.borrow().as_ref()
1952 {
1953 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1954 };
1955 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1956 });
1957
1958 let button = prepaint_gutter_button(
1959 button?,
1960 row,
1961 line_height,
1962 gutter_dimensions,
1963 scroll_pixel_position,
1964 gutter_hitbox,
1965 rows_with_hunk_bounds,
1966 cx,
1967 );
1968
1969 Some(button)
1970 }
1971
1972 fn get_participant_color(
1973 participant_index: Option<ParticipantIndex>,
1974 cx: &WindowContext,
1975 ) -> PlayerColor {
1976 if let Some(index) = participant_index {
1977 cx.theme().players().color_for_participant(index.0)
1978 } else {
1979 cx.theme().players().absent()
1980 }
1981 }
1982
1983 fn calculate_relative_line_numbers(
1984 &self,
1985 snapshot: &EditorSnapshot,
1986 rows: &Range<DisplayRow>,
1987 relative_to: Option<DisplayRow>,
1988 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1989 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1990 let Some(relative_to) = relative_to else {
1991 return relative_rows;
1992 };
1993
1994 let start = rows.start.min(relative_to);
1995 let end = rows.end.max(relative_to);
1996
1997 let buffer_rows = snapshot
1998 .buffer_rows(start)
1999 .take(1 + end.minus(start) as usize)
2000 .collect::<Vec<_>>();
2001
2002 let head_idx = relative_to.minus(start);
2003 let mut delta = 1;
2004 let mut i = head_idx + 1;
2005 while i < buffer_rows.len() as u32 {
2006 if buffer_rows[i as usize].is_some() {
2007 if rows.contains(&DisplayRow(i + start.0)) {
2008 relative_rows.insert(DisplayRow(i + start.0), delta);
2009 }
2010 delta += 1;
2011 }
2012 i += 1;
2013 }
2014 delta = 1;
2015 i = head_idx.min(buffer_rows.len() as u32 - 1);
2016 while i > 0 && buffer_rows[i as usize].is_none() {
2017 i -= 1;
2018 }
2019
2020 while i > 0 {
2021 i -= 1;
2022 if buffer_rows[i as usize].is_some() {
2023 if rows.contains(&DisplayRow(i + start.0)) {
2024 relative_rows.insert(DisplayRow(i + start.0), delta);
2025 }
2026 delta += 1;
2027 }
2028 }
2029
2030 relative_rows
2031 }
2032
2033 #[allow(clippy::too_many_arguments)]
2034 fn layout_line_numbers(
2035 &self,
2036 gutter_hitbox: Option<&Hitbox>,
2037 gutter_dimensions: GutterDimensions,
2038 line_height: Pixels,
2039 scroll_position: gpui::Point<f32>,
2040 rows: Range<DisplayRow>,
2041 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
2042 newest_selection_head: Option<DisplayPoint>,
2043 snapshot: &EditorSnapshot,
2044 cx: &mut WindowContext,
2045 ) -> Arc<HashMap<MultiBufferRow, LineNumberLayout>> {
2046 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
2047 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
2048 });
2049 if !include_line_numbers {
2050 return Arc::default();
2051 }
2052
2053 let (newest_selection_head, is_relative) = self.editor.update(cx, |editor, cx| {
2054 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
2055 let newest = editor.selections.newest::<Point>(cx);
2056 SelectionLayout::new(
2057 newest,
2058 editor.selections.line_mode,
2059 editor.cursor_shape,
2060 &snapshot.display_snapshot,
2061 true,
2062 true,
2063 None,
2064 )
2065 .head
2066 });
2067 let is_relative = editor.should_use_relative_line_numbers(cx);
2068 (newest_selection_head, is_relative)
2069 });
2070
2071 let relative_to = if is_relative {
2072 Some(newest_selection_head.row())
2073 } else {
2074 None
2075 };
2076 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
2077 let mut line_number = String::new();
2078 let line_numbers = buffer_rows
2079 .into_iter()
2080 .enumerate()
2081 .flat_map(|(ix, buffer_row)| {
2082 let buffer_row = buffer_row?;
2083 line_number.clear();
2084 let display_row = DisplayRow(rows.start.0 + ix as u32);
2085 let non_relative_number = buffer_row.0 + 1;
2086 let number = relative_rows
2087 .get(&display_row)
2088 .unwrap_or(&non_relative_number);
2089 write!(&mut line_number, "{number}").unwrap();
2090
2091 let color = cx.theme().colors().editor_line_number;
2092 let shaped_line = self
2093 .shape_line_number(SharedString::from(&line_number), color, cx)
2094 .log_err()?;
2095 let scroll_top = scroll_position.y * line_height;
2096 let line_origin = gutter_hitbox.map(|hitbox| {
2097 hitbox.origin
2098 + point(
2099 hitbox.size.width - shaped_line.width - gutter_dimensions.right_padding,
2100 ix as f32 * line_height - (scroll_top % line_height),
2101 )
2102 });
2103
2104 #[cfg(not(test))]
2105 let hitbox = line_origin.map(|line_origin| {
2106 cx.insert_hitbox(
2107 Bounds::new(line_origin, size(shaped_line.width, line_height)),
2108 false,
2109 )
2110 });
2111 #[cfg(test)]
2112 let hitbox = {
2113 let _ = line_origin;
2114 None
2115 };
2116
2117 let multi_buffer_row = DisplayPoint::new(display_row, 0).to_point(snapshot).row;
2118 let multi_buffer_row = MultiBufferRow(multi_buffer_row);
2119 let line_number = LineNumberLayout {
2120 shaped_line,
2121 hitbox,
2122 display_row,
2123 };
2124 Some((multi_buffer_row, line_number))
2125 })
2126 .collect();
2127 Arc::new(line_numbers)
2128 }
2129
2130 fn layout_crease_toggles(
2131 &self,
2132 rows: Range<DisplayRow>,
2133 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2134 active_rows: &BTreeMap<DisplayRow, bool>,
2135 snapshot: &EditorSnapshot,
2136 cx: &mut WindowContext,
2137 ) -> Vec<Option<AnyElement>> {
2138 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
2139 && snapshot.mode == EditorMode::Full
2140 && self.editor.read(cx).is_singleton(cx);
2141 if include_fold_statuses {
2142 buffer_rows
2143 .into_iter()
2144 .enumerate()
2145 .map(|(ix, row)| {
2146 if let Some(multibuffer_row) = row {
2147 let display_row = DisplayRow(rows.start.0 + ix as u32);
2148 let active = active_rows.contains_key(&display_row);
2149 snapshot.render_crease_toggle(
2150 multibuffer_row,
2151 active,
2152 self.editor.clone(),
2153 cx,
2154 )
2155 } else {
2156 None
2157 }
2158 })
2159 .collect()
2160 } else {
2161 Vec::new()
2162 }
2163 }
2164
2165 fn layout_crease_trailers(
2166 &self,
2167 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2168 snapshot: &EditorSnapshot,
2169 cx: &mut WindowContext,
2170 ) -> Vec<Option<AnyElement>> {
2171 buffer_rows
2172 .into_iter()
2173 .map(|row| {
2174 if let Some(multibuffer_row) = row {
2175 snapshot.render_crease_trailer(multibuffer_row, cx)
2176 } else {
2177 None
2178 }
2179 })
2180 .collect()
2181 }
2182
2183 fn layout_lines(
2184 rows: Range<DisplayRow>,
2185 snapshot: &EditorSnapshot,
2186 style: &EditorStyle,
2187 editor_width: Pixels,
2188 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2189 cx: &mut WindowContext,
2190 ) -> Vec<LineWithInvisibles> {
2191 if rows.start >= rows.end {
2192 return Vec::new();
2193 }
2194
2195 // Show the placeholder when the editor is empty
2196 if snapshot.is_empty() {
2197 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2198 let placeholder_color = cx.theme().colors().text_placeholder;
2199 let placeholder_text = snapshot.placeholder_text();
2200
2201 let placeholder_lines = placeholder_text
2202 .as_ref()
2203 .map_or("", AsRef::as_ref)
2204 .split('\n')
2205 .skip(rows.start.0 as usize)
2206 .chain(iter::repeat(""))
2207 .take(rows.len());
2208 placeholder_lines
2209 .filter_map(move |line| {
2210 let run = TextRun {
2211 len: line.len(),
2212 font: style.text.font(),
2213 color: placeholder_color,
2214 background_color: None,
2215 underline: Default::default(),
2216 strikethrough: None,
2217 };
2218 cx.text_system()
2219 .shape_line(line.to_string().into(), font_size, &[run])
2220 .log_err()
2221 })
2222 .map(|line| LineWithInvisibles {
2223 width: line.width,
2224 len: line.len,
2225 fragments: smallvec![LineFragment::Text(line)],
2226 invisibles: Vec::new(),
2227 font_size,
2228 })
2229 .collect()
2230 } else {
2231 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
2232 LineWithInvisibles::from_chunks(
2233 chunks,
2234 &style,
2235 MAX_LINE_LEN,
2236 rows.len(),
2237 snapshot.mode,
2238 editor_width,
2239 is_row_soft_wrapped,
2240 cx,
2241 )
2242 }
2243 }
2244
2245 fn prepaint_lines(
2246 &self,
2247 start_row: DisplayRow,
2248 line_layouts: &mut [LineWithInvisibles],
2249 line_height: Pixels,
2250 scroll_pixel_position: gpui::Point<Pixels>,
2251 content_origin: gpui::Point<Pixels>,
2252 cx: &mut WindowContext,
2253 ) -> SmallVec<[AnyElement; 1]> {
2254 let mut line_elements = SmallVec::new();
2255 for (ix, line) in line_layouts.iter_mut().enumerate() {
2256 let row = start_row + DisplayRow(ix as u32);
2257 line.prepaint(
2258 line_height,
2259 scroll_pixel_position,
2260 row,
2261 content_origin,
2262 &mut line_elements,
2263 cx,
2264 );
2265 }
2266 line_elements
2267 }
2268
2269 #[allow(clippy::too_many_arguments)]
2270 fn render_block(
2271 &self,
2272 block: &Block,
2273 available_width: AvailableSpace,
2274 block_id: BlockId,
2275 block_row_start: DisplayRow,
2276 snapshot: &EditorSnapshot,
2277 text_x: Pixels,
2278 rows: &Range<DisplayRow>,
2279 line_layouts: &[LineWithInvisibles],
2280 gutter_dimensions: &GutterDimensions,
2281 line_height: Pixels,
2282 em_width: Pixels,
2283 text_hitbox: &Hitbox,
2284 editor_width: Pixels,
2285 scroll_width: &mut Pixels,
2286 resized_blocks: &mut HashMap<CustomBlockId, u32>,
2287 selections: &[Selection<Point>],
2288 selected_buffer_ids: &Vec<BufferId>,
2289 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2290 sticky_header_excerpt_id: Option<ExcerptId>,
2291 cx: &mut WindowContext,
2292 ) -> (AnyElement, Size<Pixels>) {
2293 let mut element = match block {
2294 Block::Custom(block) => {
2295 let block_start = block.start().to_point(&snapshot.buffer_snapshot);
2296 let block_end = block.end().to_point(&snapshot.buffer_snapshot);
2297 let align_to = block_start.to_display_point(snapshot);
2298 let anchor_x = text_x
2299 + if rows.contains(&align_to.row()) {
2300 line_layouts[align_to.row().minus(rows.start) as usize]
2301 .x_for_index(align_to.column() as usize)
2302 } else {
2303 layout_line(
2304 align_to.row(),
2305 snapshot,
2306 &self.style,
2307 editor_width,
2308 is_row_soft_wrapped,
2309 cx,
2310 )
2311 .x_for_index(align_to.column() as usize)
2312 };
2313
2314 let selected = selections
2315 .binary_search_by(|selection| {
2316 if selection.end <= block_start {
2317 Ordering::Less
2318 } else if selection.start >= block_end {
2319 Ordering::Greater
2320 } else {
2321 Ordering::Equal
2322 }
2323 })
2324 .is_ok();
2325
2326 div()
2327 .size_full()
2328 .child(block.render(&mut BlockContext {
2329 context: cx,
2330 anchor_x,
2331 gutter_dimensions,
2332 line_height,
2333 em_width,
2334 block_id,
2335 selected,
2336 max_width: text_hitbox.size.width.max(*scroll_width),
2337 editor_style: &self.style,
2338 }))
2339 .into_any()
2340 }
2341
2342 Block::FoldedBuffer {
2343 first_excerpt,
2344 prev_excerpt,
2345 show_excerpt_controls,
2346 height,
2347 } => {
2348 let selected = selected_buffer_ids.contains(&first_excerpt.buffer_id);
2349 let icon_offset = gutter_dimensions.width
2350 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2351 let mut result = v_flex().id(block_id).w_full();
2352
2353 if let Some(prev_excerpt) = prev_excerpt {
2354 if *show_excerpt_controls {
2355 result = result.child(
2356 h_flex()
2357 .id("expand_down_hit_area")
2358 .w(icon_offset)
2359 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2360 .flex_none()
2361 .justify_end()
2362 .child(self.render_expand_excerpt_button(
2363 IconName::ArrowDownFromLine,
2364 None,
2365 cx,
2366 ))
2367 .on_click(cx.listener_for(&self.editor, {
2368 let excerpt_id = prev_excerpt.id;
2369 let direction = ExpandExcerptDirection::Down;
2370 move |editor, _, cx| {
2371 editor.expand_excerpt(excerpt_id, direction, cx);
2372 cx.stop_propagation();
2373 }
2374 })),
2375 );
2376 }
2377 }
2378
2379 let jump_data = header_jump_data(snapshot, block_row_start, *height, first_excerpt);
2380 result
2381 .child(self.render_buffer_header(first_excerpt, true, selected, jump_data, cx))
2382 .into_any_element()
2383 }
2384
2385 Block::ExcerptBoundary {
2386 prev_excerpt,
2387 next_excerpt,
2388 show_excerpt_controls,
2389 height,
2390 starts_new_buffer,
2391 } => {
2392 let icon_offset = gutter_dimensions.width
2393 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2394 let header_height = MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height();
2395 let color = cx.theme().colors().clone();
2396 let hover_color = color.border_variant.opacity(0.5);
2397 let focus_handle = self.editor.focus_handle(cx).clone();
2398
2399 let mut result = v_flex().id(block_id).w_full();
2400 let expand_area = |id: SharedString| {
2401 h_flex()
2402 .id(id)
2403 .w_full()
2404 .cursor_pointer()
2405 .block_mouse_down()
2406 .on_mouse_move(|_, cx| cx.stop_propagation())
2407 .hover(|style| style.bg(hover_color))
2408 .tooltip({
2409 let focus_handle = focus_handle.clone();
2410 move |cx| {
2411 Tooltip::for_action_in(
2412 "Expand Excerpt",
2413 &ExpandExcerpts { lines: 0 },
2414 &focus_handle,
2415 cx,
2416 )
2417 }
2418 })
2419 };
2420
2421 if let Some(prev_excerpt) = prev_excerpt {
2422 if *show_excerpt_controls {
2423 let group_name = "expand-down";
2424
2425 result = result.child(
2426 expand_area(format!("block-{}-down", block_id).into())
2427 .group(group_name)
2428 .child(
2429 h_flex()
2430 .w(icon_offset)
2431 .h(header_height)
2432 .flex_none()
2433 .justify_end()
2434 .child(self.render_expand_excerpt_button(
2435 IconName::ArrowDownFromLine,
2436 Some(group_name.to_string()),
2437 cx,
2438 )),
2439 )
2440 .on_click(cx.listener_for(&self.editor, {
2441 let excerpt_id = prev_excerpt.id;
2442 let direction = ExpandExcerptDirection::Down;
2443 move |editor, _, cx| {
2444 editor.expand_excerpt(excerpt_id, direction, cx);
2445 cx.stop_propagation();
2446 }
2447 })),
2448 );
2449 }
2450 }
2451
2452 if let Some(next_excerpt) = next_excerpt {
2453 let jump_data =
2454 header_jump_data(snapshot, block_row_start, *height, next_excerpt);
2455
2456 if *starts_new_buffer {
2457 if sticky_header_excerpt_id != Some(next_excerpt.id) {
2458 let selected = selected_buffer_ids.contains(&next_excerpt.buffer_id);
2459
2460 result = result.child(self.render_buffer_header(
2461 next_excerpt,
2462 false,
2463 selected,
2464 jump_data,
2465 cx,
2466 ));
2467 } else {
2468 result =
2469 result.child(div().h(FILE_HEADER_HEIGHT as f32 * cx.line_height()));
2470 }
2471
2472 if *show_excerpt_controls {
2473 let group_name = "expand-up-first";
2474
2475 result = result.child(
2476 h_flex().group(group_name).child(
2477 expand_area(format!("block-{}-up-first", block_id).into())
2478 .h(header_height)
2479 .child(
2480 h_flex()
2481 .w(icon_offset)
2482 .h(header_height)
2483 .flex_none()
2484 .justify_end()
2485 .child(self.render_expand_excerpt_button(
2486 IconName::ArrowUpFromLine,
2487 Some(group_name.to_string()),
2488 cx,
2489 )),
2490 )
2491 .on_click(cx.listener_for(&self.editor, {
2492 let excerpt_id = next_excerpt.id;
2493 let direction = ExpandExcerptDirection::Up;
2494 move |editor, _, cx| {
2495 editor.expand_excerpt(excerpt_id, direction, cx);
2496 cx.stop_propagation();
2497 }
2498 })),
2499 ),
2500 );
2501 }
2502 } else {
2503 let group_name = "expand-up-subsequent";
2504
2505 if *show_excerpt_controls {
2506 result = result.child(
2507 h_flex()
2508 .relative()
2509 .group(group_name)
2510 .child(
2511 div()
2512 .top(px(0.))
2513 .absolute()
2514 .w_full()
2515 .h_px()
2516 .bg(color.border_variant),
2517 )
2518 .child(
2519 expand_area(format!("block-{}-up", block_id).into())
2520 .h(header_height)
2521 .child(
2522 h_flex()
2523 .w(icon_offset)
2524 .h(header_height)
2525 .flex_none()
2526 .justify_end()
2527 .child(if *show_excerpt_controls {
2528 self.render_expand_excerpt_button(
2529 IconName::ArrowUpFromLine,
2530 Some(group_name.to_string()),
2531 cx,
2532 )
2533 } else {
2534 ButtonLike::new("jump-icon")
2535 .style(ButtonStyle::Transparent)
2536 .child(
2537 svg()
2538 .path(
2539 IconName::ArrowUpRight
2540 .path(),
2541 )
2542 .size(IconSize::XSmall.rems())
2543 .text_color(
2544 color.border_variant,
2545 )
2546 .group_hover(
2547 group_name,
2548 |style| {
2549 style.text_color(
2550 color.border,
2551 )
2552 },
2553 ),
2554 )
2555 }),
2556 )
2557 .on_click(cx.listener_for(&self.editor, {
2558 let excerpt_id = next_excerpt.id;
2559 let direction = ExpandExcerptDirection::Up;
2560 move |editor, _, cx| {
2561 editor
2562 .expand_excerpt(excerpt_id, direction, cx);
2563 cx.stop_propagation();
2564 }
2565 })),
2566 ),
2567 );
2568 }
2569 };
2570 }
2571
2572 result.into_any()
2573 }
2574 };
2575
2576 // Discover the element's content height, then round up to the nearest multiple of line height.
2577 let preliminary_size =
2578 element.layout_as_root(size(available_width, AvailableSpace::MinContent), cx);
2579 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2580 let final_size = if preliminary_size.height == quantized_height {
2581 preliminary_size
2582 } else {
2583 element.layout_as_root(size(available_width, quantized_height.into()), cx)
2584 };
2585
2586 if let BlockId::Custom(custom_block_id) = block_id {
2587 if block.height() > 0 {
2588 let element_height_in_lines =
2589 ((final_size.height / line_height).ceil() as u32).max(1);
2590 if element_height_in_lines != block.height() {
2591 resized_blocks.insert(custom_block_id, element_height_in_lines);
2592 }
2593 }
2594 }
2595
2596 (element, final_size)
2597 }
2598
2599 fn render_buffer_header(
2600 &self,
2601 for_excerpt: &ExcerptInfo,
2602 is_folded: bool,
2603 is_selected: bool,
2604 jump_data: JumpData,
2605 cx: &mut WindowContext,
2606 ) -> Div {
2607 let include_root = self
2608 .editor
2609 .read(cx)
2610 .project
2611 .as_ref()
2612 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2613 .unwrap_or_default();
2614 let path = for_excerpt.buffer.resolve_file_path(cx, include_root);
2615 let filename = path
2616 .as_ref()
2617 .and_then(|path| Some(path.file_name()?.to_string_lossy().to_string()));
2618 let parent_path = path
2619 .as_ref()
2620 .and_then(|path| Some(path.parent()?.to_string_lossy().to_string() + "/"));
2621 let focus_handle = self.editor.focus_handle(cx);
2622 let colors = cx.theme().colors();
2623
2624 div()
2625 .px_2()
2626 .pt_2()
2627 .w_full()
2628 .h(FILE_HEADER_HEIGHT as f32 * cx.line_height())
2629 .child(
2630 h_flex()
2631 .size_full()
2632 .gap_2()
2633 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2634 .pl_0p5()
2635 .pr_5()
2636 .rounded_md()
2637 .shadow_md()
2638 .border_1()
2639 .map(|div| {
2640 let border_color = if is_selected && is_folded {
2641 colors.border_focused
2642 } else {
2643 colors.border
2644 };
2645 div.border_color(border_color)
2646 })
2647 .bg(colors.editor_subheader_background)
2648 .hover(|style| style.bg(colors.element_hover))
2649 .map(|header| {
2650 let editor = self.editor.clone();
2651 let buffer_id = for_excerpt.buffer_id;
2652 let toggle_chevron_icon =
2653 FileIcons::get_chevron_icon(!is_folded, cx).map(Icon::from_path);
2654 header.child(
2655 div()
2656 .hover(|style| style.bg(colors.element_selected))
2657 .rounded_sm()
2658 .child(
2659 ButtonLike::new("toggle-buffer-fold")
2660 .style(ui::ButtonStyle::Transparent)
2661 .size(ButtonSize::Large)
2662 .width(px(30.).into())
2663 .children(toggle_chevron_icon)
2664 .tooltip({
2665 let focus_handle = focus_handle.clone();
2666 move |cx| {
2667 Tooltip::for_action_in(
2668 "Toggle Excerpt Fold",
2669 &ToggleFold,
2670 &focus_handle,
2671 cx,
2672 )
2673 }
2674 })
2675 .on_click(move |_, cx| {
2676 if is_folded {
2677 editor.update(cx, |editor, cx| {
2678 editor.unfold_buffer(buffer_id, cx);
2679 });
2680 } else {
2681 editor.update(cx, |editor, cx| {
2682 editor.fold_buffer(buffer_id, cx);
2683 });
2684 }
2685 }),
2686 ),
2687 )
2688 })
2689 .child(
2690 h_flex()
2691 .cursor_pointer()
2692 .id("path header block")
2693 .size_full()
2694 .justify_between()
2695 .child(
2696 h_flex()
2697 .gap_2()
2698 .child(
2699 filename
2700 .map(SharedString::from)
2701 .unwrap_or_else(|| "untitled".into()),
2702 )
2703 .when_some(parent_path, |then, path| {
2704 then.child(div().child(path).text_color(colors.text_muted))
2705 }),
2706 )
2707 .when(is_selected, |el| {
2708 el.child(
2709 h_flex()
2710 .id("jump-to-file-button")
2711 .gap_2p5()
2712 .child(Label::new("Jump To File"))
2713 .children(
2714 KeyBinding::for_action_in(
2715 &OpenExcerpts,
2716 &focus_handle,
2717 cx,
2718 )
2719 .map(|binding| binding.into_any_element()),
2720 ),
2721 )
2722 })
2723 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
2724 .on_click(cx.listener_for(&self.editor, {
2725 move |editor, e: &ClickEvent, cx| {
2726 editor.open_excerpts_common(
2727 Some(jump_data.clone()),
2728 e.down.modifiers.secondary(),
2729 cx,
2730 );
2731 }
2732 })),
2733 ),
2734 )
2735 }
2736
2737 fn render_expand_excerpt_button(
2738 &self,
2739 icon: IconName,
2740 group_name: impl Into<Option<String>>,
2741 cx: &mut WindowContext,
2742 ) -> ButtonLike {
2743 let group_name = group_name.into();
2744 ButtonLike::new("expand-icon")
2745 .style(ButtonStyle::Transparent)
2746 .child(
2747 svg()
2748 .path(icon.path())
2749 .size(IconSize::XSmall.rems())
2750 .text_color(cx.theme().colors().editor_line_number)
2751 .when_some(group_name, |svg, group_name| {
2752 svg.group_hover(group_name, |style| {
2753 style.text_color(cx.theme().colors().editor_active_line_number)
2754 })
2755 }),
2756 )
2757 }
2758
2759 #[allow(clippy::too_many_arguments)]
2760 fn render_blocks(
2761 &self,
2762 rows: Range<DisplayRow>,
2763 snapshot: &EditorSnapshot,
2764 hitbox: &Hitbox,
2765 text_hitbox: &Hitbox,
2766 editor_width: Pixels,
2767 scroll_width: &mut Pixels,
2768 gutter_dimensions: &GutterDimensions,
2769 em_width: Pixels,
2770 text_x: Pixels,
2771 line_height: Pixels,
2772 line_layouts: &[LineWithInvisibles],
2773 selections: &[Selection<Point>],
2774 selected_buffer_ids: &Vec<BufferId>,
2775 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2776 sticky_header_excerpt_id: Option<ExcerptId>,
2777 cx: &mut WindowContext,
2778 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2779 let (fixed_blocks, non_fixed_blocks) = snapshot
2780 .blocks_in_range(rows.clone())
2781 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2782
2783 let mut focused_block = self
2784 .editor
2785 .update(cx, |editor, _| editor.take_focused_block());
2786 let mut fixed_block_max_width = Pixels::ZERO;
2787 let mut blocks = Vec::new();
2788 let mut resized_blocks = HashMap::default();
2789
2790 for (row, block) in fixed_blocks {
2791 let block_id = block.id();
2792
2793 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2794 focused_block = None;
2795 }
2796
2797 let (element, element_size) = self.render_block(
2798 block,
2799 AvailableSpace::MinContent,
2800 block_id,
2801 row,
2802 snapshot,
2803 text_x,
2804 &rows,
2805 line_layouts,
2806 gutter_dimensions,
2807 line_height,
2808 em_width,
2809 text_hitbox,
2810 editor_width,
2811 scroll_width,
2812 &mut resized_blocks,
2813 selections,
2814 selected_buffer_ids,
2815 is_row_soft_wrapped,
2816 sticky_header_excerpt_id,
2817 cx,
2818 );
2819 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2820 blocks.push(BlockLayout {
2821 id: block_id,
2822 row: Some(row),
2823 element,
2824 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
2825 style: BlockStyle::Fixed,
2826 });
2827 }
2828
2829 for (row, block) in non_fixed_blocks {
2830 let style = block.style();
2831 let width = match style {
2832 BlockStyle::Sticky => hitbox.size.width,
2833 BlockStyle::Flex => hitbox
2834 .size
2835 .width
2836 .max(fixed_block_max_width)
2837 .max(gutter_dimensions.width + *scroll_width),
2838 BlockStyle::Fixed => unreachable!(),
2839 };
2840 let block_id = block.id();
2841
2842 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2843 focused_block = None;
2844 }
2845
2846 let (element, element_size) = self.render_block(
2847 block,
2848 width.into(),
2849 block_id,
2850 row,
2851 snapshot,
2852 text_x,
2853 &rows,
2854 line_layouts,
2855 gutter_dimensions,
2856 line_height,
2857 em_width,
2858 text_hitbox,
2859 editor_width,
2860 scroll_width,
2861 &mut resized_blocks,
2862 selections,
2863 selected_buffer_ids,
2864 is_row_soft_wrapped,
2865 sticky_header_excerpt_id,
2866 cx,
2867 );
2868
2869 blocks.push(BlockLayout {
2870 id: block_id,
2871 row: Some(row),
2872 element,
2873 available_space: size(width.into(), element_size.height.into()),
2874 style,
2875 });
2876 }
2877
2878 if let Some(focused_block) = focused_block {
2879 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2880 if focus_handle.is_focused(cx) {
2881 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2882 let style = block.style();
2883 let width = match style {
2884 BlockStyle::Fixed => AvailableSpace::MinContent,
2885 BlockStyle::Flex => AvailableSpace::Definite(
2886 hitbox
2887 .size
2888 .width
2889 .max(fixed_block_max_width)
2890 .max(gutter_dimensions.width + *scroll_width),
2891 ),
2892 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2893 };
2894
2895 let (element, element_size) = self.render_block(
2896 &block,
2897 width,
2898 focused_block.id,
2899 rows.end,
2900 snapshot,
2901 text_x,
2902 &rows,
2903 line_layouts,
2904 gutter_dimensions,
2905 line_height,
2906 em_width,
2907 text_hitbox,
2908 editor_width,
2909 scroll_width,
2910 &mut resized_blocks,
2911 selections,
2912 selected_buffer_ids,
2913 is_row_soft_wrapped,
2914 sticky_header_excerpt_id,
2915 cx,
2916 );
2917
2918 blocks.push(BlockLayout {
2919 id: block.id(),
2920 row: None,
2921 element,
2922 available_space: size(width, element_size.height.into()),
2923 style,
2924 });
2925 }
2926 }
2927 }
2928 }
2929
2930 if resized_blocks.is_empty() {
2931 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2932 Ok(blocks)
2933 } else {
2934 Err(resized_blocks)
2935 }
2936 }
2937
2938 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
2939 /// a restart of rendering for the editor based on the new sizes.
2940 fn layout_blocks(
2941 &self,
2942 blocks: &mut Vec<BlockLayout>,
2943 block_starts: &mut HashSet<DisplayRow>,
2944 hitbox: &Hitbox,
2945 line_height: Pixels,
2946 scroll_pixel_position: gpui::Point<Pixels>,
2947 cx: &mut WindowContext,
2948 ) {
2949 for block in blocks {
2950 let mut origin = if let Some(row) = block.row {
2951 block_starts.insert(row);
2952 hitbox.origin
2953 + point(
2954 Pixels::ZERO,
2955 row.as_f32() * line_height - scroll_pixel_position.y,
2956 )
2957 } else {
2958 // Position the block outside the visible area
2959 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2960 };
2961
2962 if !matches!(block.style, BlockStyle::Sticky) {
2963 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2964 }
2965
2966 let focus_handle = block
2967 .element
2968 .prepaint_as_root(origin, block.available_space, cx);
2969
2970 if let Some(focus_handle) = focus_handle {
2971 self.editor.update(cx, |editor, _cx| {
2972 editor.set_focused_block(FocusedBlock {
2973 id: block.id,
2974 focus_handle: focus_handle.downgrade(),
2975 });
2976 });
2977 }
2978 }
2979 }
2980
2981 #[allow(clippy::too_many_arguments)]
2982 fn layout_sticky_buffer_header(
2983 &self,
2984 StickyHeaderExcerpt {
2985 excerpt,
2986 next_excerpt_controls_present,
2987 next_buffer_row,
2988 }: StickyHeaderExcerpt<'_>,
2989 scroll_position: f32,
2990 line_height: Pixels,
2991 snapshot: &EditorSnapshot,
2992 hitbox: &Hitbox,
2993 selected_buffer_ids: &Vec<BufferId>,
2994 cx: &mut WindowContext,
2995 ) -> AnyElement {
2996 let jump_data = header_jump_data(
2997 snapshot,
2998 DisplayRow(scroll_position as u32),
2999 FILE_HEADER_HEIGHT + MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
3000 excerpt,
3001 );
3002
3003 let editor_bg_color = cx.theme().colors().editor_background;
3004
3005 let selected = selected_buffer_ids.contains(&excerpt.buffer_id);
3006
3007 let mut header = v_flex()
3008 .relative()
3009 .child(
3010 div()
3011 .w(hitbox.bounds.size.width)
3012 .h(FILE_HEADER_HEIGHT as f32 * line_height)
3013 .bg(linear_gradient(
3014 0.,
3015 linear_color_stop(editor_bg_color.opacity(0.), 0.),
3016 linear_color_stop(editor_bg_color, 0.6),
3017 ))
3018 .absolute()
3019 .top_0(),
3020 )
3021 .child(
3022 self.render_buffer_header(excerpt, false, selected, jump_data, cx)
3023 .into_any_element(),
3024 )
3025 .into_any_element();
3026
3027 let mut origin = hitbox.origin;
3028
3029 if let Some(next_buffer_row) = next_buffer_row {
3030 // Push up the sticky header when the excerpt is getting close to the top of the viewport
3031
3032 let mut max_row = next_buffer_row - FILE_HEADER_HEIGHT * 2;
3033
3034 if next_excerpt_controls_present {
3035 max_row -= MULTI_BUFFER_EXCERPT_HEADER_HEIGHT;
3036 }
3037
3038 let offset = scroll_position - max_row as f32;
3039
3040 if offset > 0.0 {
3041 origin.y -= Pixels(offset) * line_height;
3042 }
3043 }
3044
3045 let size = size(
3046 AvailableSpace::Definite(hitbox.size.width),
3047 AvailableSpace::MinContent,
3048 );
3049
3050 header.prepaint_as_root(origin, size, cx);
3051
3052 header
3053 }
3054
3055 #[allow(clippy::too_many_arguments)]
3056 fn layout_context_menu(
3057 &self,
3058 line_height: Pixels,
3059 text_hitbox: &Hitbox,
3060 content_origin: gpui::Point<Pixels>,
3061 start_row: DisplayRow,
3062 scroll_pixel_position: gpui::Point<Pixels>,
3063 line_layouts: &[LineWithInvisibles],
3064 newest_selection_head: DisplayPoint,
3065 gutter_overshoot: Pixels,
3066 cx: &mut WindowContext,
3067 ) {
3068 let Some(context_menu_origin) = self
3069 .editor
3070 .read(cx)
3071 .context_menu_origin(newest_selection_head)
3072 else {
3073 return;
3074 };
3075 let target_position = content_origin
3076 + match context_menu_origin {
3077 crate::ContextMenuOrigin::EditorPoint(display_point) => {
3078 let cursor_row_layout =
3079 &line_layouts[display_point.row().minus(start_row) as usize];
3080 gpui::Point {
3081 x: cmp::max(
3082 px(0.),
3083 cursor_row_layout.x_for_index(display_point.column() as usize)
3084 - scroll_pixel_position.x,
3085 ),
3086 y: cmp::max(
3087 px(0.),
3088 display_point.row().next_row().as_f32() * line_height
3089 - scroll_pixel_position.y,
3090 ),
3091 }
3092 }
3093 crate::ContextMenuOrigin::GutterIndicator(row) => {
3094 // 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
3095 // text field.
3096 gpui::Point {
3097 x: -gutter_overshoot,
3098 y: row.next_row().as_f32() * line_height - scroll_pixel_position.y,
3099 }
3100 }
3101 };
3102
3103 let viewport_bounds = Bounds::new(Default::default(), cx.viewport_size()).extend(Edges {
3104 right: -Self::SCROLLBAR_WIDTH - MENU_GAP,
3105 ..Default::default()
3106 });
3107
3108 // If the context menu's max height won't fit below, then flip it above the line and display
3109 // it in reverse order. If the available space above is less than below.
3110 let unconstrained_max_height = line_height * 12. + POPOVER_Y_PADDING;
3111 let min_height = line_height * 3. + POPOVER_Y_PADDING;
3112 let bottom_y_when_flipped = target_position.y - line_height;
3113 let available_above = bottom_y_when_flipped - text_hitbox.top();
3114 let available_below = text_hitbox.bottom() - target_position.y;
3115 let y_overflows_below = unconstrained_max_height > available_below;
3116 let mut y_is_flipped = y_overflows_below && available_above > available_below;
3117 let mut height = cmp::min(
3118 unconstrained_max_height,
3119 if y_is_flipped {
3120 available_above
3121 } else {
3122 available_below
3123 },
3124 );
3125
3126 // If less than 3 lines fit within the text bounds, instead fit within the window.
3127 if height < min_height {
3128 let available_above = bottom_y_when_flipped;
3129 let available_below = viewport_bounds.bottom() - target_position.y;
3130 if available_below > 3. * line_height {
3131 y_is_flipped = false;
3132 height = min_height;
3133 } else if available_above > 3. * line_height {
3134 y_is_flipped = true;
3135 height = min_height;
3136 } else if available_above > available_below {
3137 y_is_flipped = true;
3138 height = available_above;
3139 } else {
3140 y_is_flipped = false;
3141 height = available_below;
3142 }
3143 }
3144
3145 let max_height_in_lines = ((height - POPOVER_Y_PADDING) / line_height).floor() as u32;
3146
3147 // TODO(mgsloan): use viewport_bounds.width as a max width when rendering menu.
3148 let Some(mut menu_element) = self.editor.update(cx, |editor, cx| {
3149 editor.render_context_menu(&self.style, max_height_in_lines, cx)
3150 }) else {
3151 return;
3152 };
3153
3154 let menu_size = menu_element.layout_as_root(AvailableSpace::min_size(), cx);
3155 let menu_position = gpui::Point {
3156 // Snap the right edge of the list to the right edge of the window if its horizontal bounds
3157 // overflow. Include space for the scrollbar.
3158 x: target_position
3159 .x
3160 .min((viewport_bounds.right() - menu_size.width).max(Pixels::ZERO)),
3161 y: if y_is_flipped {
3162 bottom_y_when_flipped - menu_size.height
3163 } else {
3164 target_position.y
3165 },
3166 };
3167 cx.defer_draw(menu_element, menu_position, 1);
3168
3169 // Layout documentation aside
3170 let menu_bounds = Bounds::new(menu_position, menu_size);
3171 let max_menu_size = size(menu_size.width, unconstrained_max_height);
3172 let max_menu_bounds = if y_is_flipped {
3173 Bounds::new(
3174 point(
3175 menu_position.x,
3176 bottom_y_when_flipped - max_menu_size.height,
3177 ),
3178 max_menu_size,
3179 )
3180 } else {
3181 Bounds::new(target_position, max_menu_size)
3182 };
3183 self.layout_context_menu_aside(
3184 text_hitbox,
3185 y_is_flipped,
3186 menu_position,
3187 menu_bounds,
3188 max_menu_bounds,
3189 unconstrained_max_height,
3190 line_height,
3191 viewport_bounds,
3192 cx,
3193 );
3194 }
3195
3196 #[allow(clippy::too_many_arguments)]
3197 fn layout_context_menu_aside(
3198 &self,
3199 text_hitbox: &Hitbox,
3200 y_is_flipped: bool,
3201 menu_position: gpui::Point<Pixels>,
3202 menu_bounds: Bounds<Pixels>,
3203 max_menu_bounds: Bounds<Pixels>,
3204 max_height: Pixels,
3205 line_height: Pixels,
3206 viewport_bounds: Bounds<Pixels>,
3207 cx: &mut WindowContext,
3208 ) {
3209 let mut extend_amount = Edges::all(MENU_GAP);
3210 // Extend to include the cursored line to avoid overlapping it.
3211 if y_is_flipped {
3212 extend_amount.bottom = line_height;
3213 } else {
3214 extend_amount.top = line_height;
3215 }
3216 let target_bounds = menu_bounds.extend(extend_amount);
3217 let max_target_bounds = max_menu_bounds.extend(extend_amount);
3218
3219 let available_within_viewport = target_bounds.space_within(&viewport_bounds);
3220 let positioned_aside = if available_within_viewport.right >= MENU_ASIDE_MIN_WIDTH {
3221 let max_width = cmp::min(
3222 available_within_viewport.right - px(1.),
3223 MENU_ASIDE_MAX_WIDTH,
3224 );
3225 let Some(mut aside) =
3226 self.render_context_menu_aside(size(max_width, max_height - POPOVER_Y_PADDING), cx)
3227 else {
3228 return;
3229 };
3230 aside.layout_as_root(AvailableSpace::min_size(), cx);
3231 let right_position = point(target_bounds.right(), menu_position.y);
3232 Some((aside, right_position))
3233 } else {
3234 let max_size = size(
3235 // TODO(mgsloan): Once the menu is bounded by viewport width the bound on viewport
3236 // won't be needed here.
3237 cmp::min(
3238 cmp::max(menu_bounds.size.width - px(2.), MENU_ASIDE_MIN_WIDTH),
3239 viewport_bounds.right(),
3240 ),
3241 cmp::min(
3242 max_height,
3243 cmp::max(
3244 available_within_viewport.top,
3245 available_within_viewport.bottom,
3246 ),
3247 ) - POPOVER_Y_PADDING,
3248 );
3249 let Some(mut aside) = self.render_context_menu_aside(max_size, cx) else {
3250 return;
3251 };
3252 let actual_size = aside.layout_as_root(AvailableSpace::min_size(), cx);
3253
3254 let top_position = point(menu_position.x, target_bounds.top() - actual_size.height);
3255 let bottom_position = point(menu_position.x, target_bounds.bottom());
3256
3257 let fit_within = |available: Edges<Pixels>, wanted: Size<Pixels>| {
3258 // Prefer to fit on the same side of the line as the menu, then on the other side of
3259 // the line.
3260 if !y_is_flipped && wanted.height < available.bottom {
3261 Some(bottom_position)
3262 } else if !y_is_flipped && wanted.height < available.top {
3263 Some(top_position)
3264 } else if y_is_flipped && wanted.height < available.top {
3265 Some(top_position)
3266 } else if y_is_flipped && wanted.height < available.bottom {
3267 Some(bottom_position)
3268 } else {
3269 None
3270 }
3271 };
3272
3273 // Prefer choosing a direction using max sizes rather than actual size for stability.
3274 let available_within_text = max_target_bounds.space_within(&text_hitbox.bounds);
3275 let wanted = size(MENU_ASIDE_MAX_WIDTH, max_height);
3276 let aside_position = fit_within(available_within_text, wanted)
3277 // Fallback: fit max size in window.
3278 .or_else(|| fit_within(max_target_bounds.space_within(&viewport_bounds), wanted))
3279 // Fallback: fit actual size in window.
3280 .or_else(|| fit_within(available_within_viewport, actual_size));
3281
3282 aside_position.map(|position| (aside, position))
3283 };
3284
3285 // Skip drawing if it doesn't fit anywhere.
3286 if let Some((aside, position)) = positioned_aside {
3287 cx.defer_draw(aside, position, 1);
3288 }
3289 }
3290
3291 fn render_context_menu_aside(
3292 &self,
3293 max_size: Size<Pixels>,
3294 cx: &mut WindowContext,
3295 ) -> Option<AnyElement> {
3296 if max_size.width < px(100.) || max_size.height < px(12.) {
3297 None
3298 } else {
3299 self.editor.update(cx, |editor, cx| {
3300 editor.render_context_menu_aside(&self.style, max_size, cx)
3301 })
3302 }
3303 }
3304
3305 #[allow(clippy::too_many_arguments)]
3306 fn layout_inline_completion_popover(
3307 &self,
3308 text_bounds: &Bounds<Pixels>,
3309 editor_snapshot: &EditorSnapshot,
3310 visible_row_range: Range<DisplayRow>,
3311 scroll_top: f32,
3312 scroll_bottom: f32,
3313 line_layouts: &[LineWithInvisibles],
3314 line_height: Pixels,
3315 scroll_pixel_position: gpui::Point<Pixels>,
3316 editor_width: Pixels,
3317 style: &EditorStyle,
3318 cx: &mut WindowContext,
3319 ) -> Option<AnyElement> {
3320 const PADDING_X: Pixels = Pixels(24.);
3321 const PADDING_Y: Pixels = Pixels(2.);
3322
3323 let active_inline_completion = self.editor.read(cx).active_inline_completion.as_ref()?;
3324
3325 match &active_inline_completion.completion {
3326 InlineCompletion::Move(target_position) => {
3327 let tab_kbd = h_flex()
3328 .px_0p5()
3329 .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
3330 .text_size(TextSize::XSmall.rems(cx))
3331 .text_color(cx.theme().colors().text.opacity(0.8))
3332 .child("tab");
3333
3334 let icon_container = div().mt(px(2.5)); // For optical alignment
3335
3336 let container_element = h_flex()
3337 .items_center()
3338 .py_0p5()
3339 .px_1()
3340 .gap_1()
3341 .bg(cx.theme().colors().editor_subheader_background)
3342 .border_1()
3343 .border_color(cx.theme().colors().text_accent.opacity(0.2))
3344 .rounded_md()
3345 .shadow_sm();
3346
3347 let target_display_point = target_position.to_display_point(editor_snapshot);
3348 if target_display_point.row().as_f32() < scroll_top {
3349 let mut element = container_element
3350 .child(tab_kbd)
3351 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3352 .child(
3353 icon_container
3354 .child(Icon::new(IconName::ArrowUp).size(IconSize::Small)),
3355 )
3356 .into_any();
3357 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3358 let offset = point((text_bounds.size.width - size.width) / 2., PADDING_Y);
3359 element.prepaint_at(text_bounds.origin + offset, cx);
3360 Some(element)
3361 } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
3362 let mut element = container_element
3363 .child(tab_kbd)
3364 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3365 .child(
3366 icon_container
3367 .child(Icon::new(IconName::ArrowDown).size(IconSize::Small)),
3368 )
3369 .into_any();
3370 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3371 let offset = point(
3372 (text_bounds.size.width - size.width) / 2.,
3373 text_bounds.size.height - size.height - PADDING_Y,
3374 );
3375 element.prepaint_at(text_bounds.origin + offset, cx);
3376 Some(element)
3377 } else {
3378 let mut element = container_element
3379 .child(tab_kbd)
3380 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3381 .into_any();
3382
3383 let target_line_end = DisplayPoint::new(
3384 target_display_point.row(),
3385 editor_snapshot.line_len(target_display_point.row()),
3386 );
3387 let origin = self.editor.update(cx, |editor, cx| {
3388 editor.display_to_pixel_point(target_line_end, editor_snapshot, cx)
3389 })?;
3390 element.prepaint_as_root(
3391 text_bounds.origin + origin + point(PADDING_X, px(0.)),
3392 AvailableSpace::min_size(),
3393 cx,
3394 );
3395 Some(element)
3396 }
3397 }
3398 InlineCompletion::Edit(edits) => {
3399 if self.editor.read(cx).has_active_completions_menu() {
3400 return None;
3401 }
3402
3403 let edit_start = edits
3404 .first()
3405 .unwrap()
3406 .0
3407 .start
3408 .to_display_point(editor_snapshot);
3409 let edit_end = edits
3410 .last()
3411 .unwrap()
3412 .0
3413 .end
3414 .to_display_point(editor_snapshot);
3415
3416 let is_visible = visible_row_range.contains(&edit_start.row())
3417 || visible_row_range.contains(&edit_end.row());
3418 if !is_visible {
3419 return None;
3420 }
3421
3422 if all_edits_insertions_or_deletions(edits, &editor_snapshot.buffer_snapshot) {
3423 return None;
3424 }
3425
3426 let crate::InlineCompletionText::Edit { text, highlights } =
3427 crate::inline_completion_edit_text(editor_snapshot, edits, false, cx)
3428 else {
3429 return None;
3430 };
3431 let line_count = text.lines().count() + 1;
3432
3433 let longest_row =
3434 editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
3435 let longest_line_width = if visible_row_range.contains(&longest_row) {
3436 line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
3437 } else {
3438 layout_line(
3439 longest_row,
3440 editor_snapshot,
3441 style,
3442 editor_width,
3443 |_| false,
3444 cx,
3445 )
3446 .width
3447 };
3448
3449 let styled_text =
3450 gpui::StyledText::new(text.clone()).with_highlights(&style.text, highlights);
3451
3452 let mut element = div()
3453 .bg(cx.theme().colors().editor_background)
3454 .border_1()
3455 .border_color(cx.theme().colors().border)
3456 .rounded_md()
3457 .px_1()
3458 .child(styled_text)
3459 .into_any();
3460
3461 let element_bounds = element.layout_as_root(AvailableSpace::min_size(), cx);
3462 let is_fully_visible =
3463 editor_width >= longest_line_width + PADDING_X + element_bounds.width;
3464
3465 let origin = if is_fully_visible {
3466 text_bounds.origin
3467 + point(
3468 longest_line_width + PADDING_X - scroll_pixel_position.x,
3469 edit_start.row().as_f32() * line_height - scroll_pixel_position.y,
3470 )
3471 } else {
3472 let target_above =
3473 DisplayRow(edit_start.row().0.saturating_sub(line_count as u32));
3474 let row_target = if visible_row_range
3475 .contains(&DisplayRow(target_above.0.saturating_sub(1)))
3476 {
3477 target_above
3478 } else {
3479 DisplayRow(edit_end.row().0 + 1)
3480 };
3481
3482 text_bounds.origin
3483 + point(
3484 -scroll_pixel_position.x,
3485 row_target.as_f32() * line_height - scroll_pixel_position.y,
3486 )
3487 };
3488
3489 element.prepaint_as_root(origin, element_bounds.into(), cx);
3490 Some(element)
3491 }
3492 }
3493 }
3494
3495 fn layout_mouse_context_menu(
3496 &self,
3497 editor_snapshot: &EditorSnapshot,
3498 visible_range: Range<DisplayRow>,
3499 content_origin: gpui::Point<Pixels>,
3500 cx: &mut WindowContext,
3501 ) -> Option<AnyElement> {
3502 let position = self.editor.update(cx, |editor, cx| {
3503 let visible_start_point = editor.display_to_pixel_point(
3504 DisplayPoint::new(visible_range.start, 0),
3505 editor_snapshot,
3506 cx,
3507 )?;
3508 let visible_end_point = editor.display_to_pixel_point(
3509 DisplayPoint::new(visible_range.end, 0),
3510 editor_snapshot,
3511 cx,
3512 )?;
3513
3514 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3515 let (source_display_point, position) = match mouse_context_menu.position {
3516 MenuPosition::PinnedToScreen(point) => (None, point),
3517 MenuPosition::PinnedToEditor { source, offset } => {
3518 let source_display_point = source.to_display_point(editor_snapshot);
3519 let source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
3520 let position = content_origin + source_point + offset;
3521 (Some(source_display_point), position)
3522 }
3523 };
3524
3525 let source_included = source_display_point.map_or(true, |source_display_point| {
3526 visible_range
3527 .to_inclusive()
3528 .contains(&source_display_point.row())
3529 });
3530 let position_included =
3531 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
3532 if !source_included && !position_included {
3533 None
3534 } else {
3535 Some(position)
3536 }
3537 })?;
3538
3539 let mut element = self.editor.update(cx, |editor, _| {
3540 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3541 let context_menu = mouse_context_menu.context_menu.clone();
3542
3543 Some(
3544 deferred(
3545 anchored()
3546 .position(position)
3547 .child(context_menu)
3548 .anchor(Corner::TopLeft)
3549 .snap_to_window_with_margin(px(8.)),
3550 )
3551 .with_priority(1)
3552 .into_any(),
3553 )
3554 })?;
3555
3556 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
3557 Some(element)
3558 }
3559
3560 #[allow(clippy::too_many_arguments)]
3561 fn layout_hover_popovers(
3562 &self,
3563 snapshot: &EditorSnapshot,
3564 hitbox: &Hitbox,
3565 text_hitbox: &Hitbox,
3566 visible_display_row_range: Range<DisplayRow>,
3567 content_origin: gpui::Point<Pixels>,
3568 scroll_pixel_position: gpui::Point<Pixels>,
3569 line_layouts: &[LineWithInvisibles],
3570 line_height: Pixels,
3571 em_width: Pixels,
3572 cx: &mut WindowContext,
3573 ) {
3574 struct MeasuredHoverPopover {
3575 element: AnyElement,
3576 size: Size<Pixels>,
3577 horizontal_offset: Pixels,
3578 }
3579
3580 let max_size = size(
3581 (120. * em_width) // Default size
3582 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3583 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3584 (16. * line_height) // Default size
3585 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3586 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3587 );
3588
3589 let hover_popovers = self.editor.update(cx, |editor, cx| {
3590 editor
3591 .hover_state
3592 .render(snapshot, visible_display_row_range.clone(), max_size, cx)
3593 });
3594 let Some((position, hover_popovers)) = hover_popovers else {
3595 return;
3596 };
3597
3598 // This is safe because we check on layout whether the required row is available
3599 let hovered_row_layout =
3600 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
3601
3602 // Compute Hovered Point
3603 let x =
3604 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
3605 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
3606 let hovered_point = content_origin + point(x, y);
3607
3608 let mut overall_height = Pixels::ZERO;
3609 let mut measured_hover_popovers = Vec::new();
3610 for mut hover_popover in hover_popovers {
3611 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
3612 let horizontal_offset =
3613 (text_hitbox.top_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
3614
3615 overall_height += HOVER_POPOVER_GAP + size.height;
3616
3617 measured_hover_popovers.push(MeasuredHoverPopover {
3618 element: hover_popover,
3619 size,
3620 horizontal_offset,
3621 });
3622 }
3623 overall_height += HOVER_POPOVER_GAP;
3624
3625 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3626 let mut occlusion = div()
3627 .size_full()
3628 .occlude()
3629 .on_mouse_move(|_, cx| cx.stop_propagation())
3630 .into_any_element();
3631 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
3632 cx.defer_draw(occlusion, origin, 2);
3633 }
3634
3635 if hovered_point.y > overall_height {
3636 // There is enough space above. Render popovers above the hovered point
3637 let mut current_y = hovered_point.y;
3638 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3639 let size = popover.size;
3640 let popover_origin = point(
3641 hovered_point.x + popover.horizontal_offset,
3642 current_y - size.height,
3643 );
3644
3645 cx.defer_draw(popover.element, popover_origin, 2);
3646 if position != itertools::Position::Last {
3647 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
3648 draw_occluder(size.width, origin, cx);
3649 }
3650
3651 current_y = popover_origin.y - HOVER_POPOVER_GAP;
3652 }
3653 } else {
3654 // There is not enough space above. Render popovers below the hovered point
3655 let mut current_y = hovered_point.y + line_height;
3656 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3657 let size = popover.size;
3658 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
3659
3660 cx.defer_draw(popover.element, popover_origin, 2);
3661 if position != itertools::Position::Last {
3662 let origin = point(popover_origin.x, popover_origin.y + size.height);
3663 draw_occluder(size.width, origin, cx);
3664 }
3665
3666 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
3667 }
3668 }
3669 }
3670
3671 #[allow(clippy::too_many_arguments)]
3672 fn layout_signature_help(
3673 &self,
3674 hitbox: &Hitbox,
3675 content_origin: gpui::Point<Pixels>,
3676 scroll_pixel_position: gpui::Point<Pixels>,
3677 newest_selection_head: Option<DisplayPoint>,
3678 start_row: DisplayRow,
3679 line_layouts: &[LineWithInvisibles],
3680 line_height: Pixels,
3681 em_width: Pixels,
3682 cx: &mut WindowContext,
3683 ) {
3684 if !self.editor.focus_handle(cx).is_focused(cx) {
3685 return;
3686 }
3687 let Some(newest_selection_head) = newest_selection_head else {
3688 return;
3689 };
3690 let selection_row = newest_selection_head.row();
3691 if selection_row < start_row {
3692 return;
3693 }
3694 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
3695 else {
3696 return;
3697 };
3698
3699 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
3700 - scroll_pixel_position.x
3701 + content_origin.x;
3702 let start_y =
3703 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
3704
3705 let max_size = size(
3706 (120. * em_width) // Default size
3707 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3708 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3709 (16. * line_height) // Default size
3710 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3711 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3712 );
3713
3714 let maybe_element = self.editor.update(cx, |editor, cx| {
3715 if let Some(popover) = editor.signature_help_state.popover_mut() {
3716 let element = popover.render(
3717 &self.style,
3718 max_size,
3719 editor.workspace.as_ref().map(|(w, _)| w.clone()),
3720 cx,
3721 );
3722 Some(element)
3723 } else {
3724 None
3725 }
3726 });
3727 if let Some(mut element) = maybe_element {
3728 let window_size = cx.viewport_size();
3729 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
3730 let mut point = point(start_x, start_y - size.height);
3731
3732 // Adjusting to ensure the popover does not overflow in the X-axis direction.
3733 if point.x + size.width >= window_size.width {
3734 point.x = window_size.width - size.width;
3735 }
3736
3737 cx.defer_draw(element, point, 1)
3738 }
3739 }
3740
3741 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
3742 cx.paint_layer(layout.hitbox.bounds, |cx| {
3743 let scroll_top = layout.position_map.snapshot.scroll_position().y;
3744 let gutter_bg = cx.theme().colors().editor_gutter_background;
3745 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
3746 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
3747
3748 if let EditorMode::Full = layout.mode {
3749 let mut active_rows = layout.active_rows.iter().peekable();
3750 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
3751 let mut end_row = start_row.0;
3752 while active_rows
3753 .peek()
3754 .map_or(false, |(active_row, has_selection)| {
3755 active_row.0 == end_row + 1
3756 && *has_selection == contains_non_empty_selection
3757 })
3758 {
3759 active_rows.next().unwrap();
3760 end_row += 1;
3761 }
3762
3763 if !contains_non_empty_selection {
3764 let highlight_h_range =
3765 match layout.position_map.snapshot.current_line_highlight {
3766 CurrentLineHighlight::Gutter => Some(Range {
3767 start: layout.hitbox.left(),
3768 end: layout.gutter_hitbox.right(),
3769 }),
3770 CurrentLineHighlight::Line => Some(Range {
3771 start: layout.text_hitbox.bounds.left(),
3772 end: layout.text_hitbox.bounds.right(),
3773 }),
3774 CurrentLineHighlight::All => Some(Range {
3775 start: layout.hitbox.left(),
3776 end: layout.hitbox.right(),
3777 }),
3778 CurrentLineHighlight::None => None,
3779 };
3780 if let Some(range) = highlight_h_range {
3781 let active_line_bg = cx.theme().colors().editor_active_line_background;
3782 let bounds = Bounds {
3783 origin: point(
3784 range.start,
3785 layout.hitbox.origin.y
3786 + (start_row.as_f32() - scroll_top)
3787 * layout.position_map.line_height,
3788 ),
3789 size: size(
3790 range.end - range.start,
3791 layout.position_map.line_height
3792 * (end_row - start_row.0 + 1) as f32,
3793 ),
3794 };
3795 cx.paint_quad(fill(bounds, active_line_bg));
3796 }
3797 }
3798 }
3799
3800 let mut paint_highlight =
3801 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
3802 let origin = point(
3803 layout.hitbox.origin.x,
3804 layout.hitbox.origin.y
3805 + (highlight_row_start.as_f32() - scroll_top)
3806 * layout.position_map.line_height,
3807 );
3808 let size = size(
3809 layout.hitbox.size.width,
3810 layout.position_map.line_height
3811 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
3812 );
3813 cx.paint_quad(fill(Bounds { origin, size }, color));
3814 };
3815
3816 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
3817 for (&new_row, &new_color) in &layout.highlighted_rows {
3818 match &mut current_paint {
3819 Some((current_color, current_range)) => {
3820 let current_color = *current_color;
3821 let new_range_started = current_color != new_color
3822 || current_range.end.next_row() != new_row;
3823 if new_range_started {
3824 paint_highlight(
3825 current_range.start,
3826 current_range.end,
3827 current_color,
3828 );
3829 current_paint = Some((new_color, new_row..new_row));
3830 continue;
3831 } else {
3832 current_range.end = current_range.end.next_row();
3833 }
3834 }
3835 None => current_paint = Some((new_color, new_row..new_row)),
3836 };
3837 }
3838 if let Some((color, range)) = current_paint {
3839 paint_highlight(range.start, range.end, color);
3840 }
3841
3842 let scroll_left =
3843 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
3844
3845 for (wrap_position, active) in layout.wrap_guides.iter() {
3846 let x = (layout.text_hitbox.origin.x
3847 + *wrap_position
3848 + layout.position_map.em_width / 2.)
3849 - scroll_left;
3850
3851 let show_scrollbars = {
3852 let (scrollbar_x, scrollbar_y) = &layout.scrollbars_layout.as_xy();
3853
3854 scrollbar_x.as_ref().map_or(false, |sx| sx.visible)
3855 || scrollbar_y.as_ref().map_or(false, |sy| sy.visible)
3856 };
3857
3858 if x < layout.text_hitbox.origin.x
3859 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
3860 {
3861 continue;
3862 }
3863
3864 let color = if *active {
3865 cx.theme().colors().editor_active_wrap_guide
3866 } else {
3867 cx.theme().colors().editor_wrap_guide
3868 };
3869 cx.paint_quad(fill(
3870 Bounds {
3871 origin: point(x, layout.text_hitbox.origin.y),
3872 size: size(px(1.), layout.text_hitbox.size.height),
3873 },
3874 color,
3875 ));
3876 }
3877 }
3878 })
3879 }
3880
3881 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3882 let Some(indent_guides) = &layout.indent_guides else {
3883 return;
3884 };
3885
3886 let faded_color = |color: Hsla, alpha: f32| {
3887 let mut faded = color;
3888 faded.a = alpha;
3889 faded
3890 };
3891
3892 for indent_guide in indent_guides {
3893 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3894 let settings = indent_guide.settings;
3895
3896 // TODO fixed for now, expose them through themes later
3897 const INDENT_AWARE_ALPHA: f32 = 0.2;
3898 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3899 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3900 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3901
3902 let line_color = match (settings.coloring, indent_guide.active) {
3903 (IndentGuideColoring::Disabled, _) => None,
3904 (IndentGuideColoring::Fixed, false) => {
3905 Some(cx.theme().colors().editor_indent_guide)
3906 }
3907 (IndentGuideColoring::Fixed, true) => {
3908 Some(cx.theme().colors().editor_indent_guide_active)
3909 }
3910 (IndentGuideColoring::IndentAware, false) => {
3911 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3912 }
3913 (IndentGuideColoring::IndentAware, true) => {
3914 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3915 }
3916 };
3917
3918 let background_color = match (settings.background_coloring, indent_guide.active) {
3919 (IndentGuideBackgroundColoring::Disabled, _) => None,
3920 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3921 indent_accent_colors,
3922 INDENT_AWARE_BACKGROUND_ALPHA,
3923 )),
3924 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3925 indent_accent_colors,
3926 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3927 )),
3928 };
3929
3930 let requested_line_width = if indent_guide.active {
3931 settings.active_line_width
3932 } else {
3933 settings.line_width
3934 }
3935 .clamp(1, 10);
3936 let mut line_indicator_width = 0.;
3937 if let Some(color) = line_color {
3938 cx.paint_quad(fill(
3939 Bounds {
3940 origin: indent_guide.origin,
3941 size: size(px(requested_line_width as f32), indent_guide.length),
3942 },
3943 color,
3944 ));
3945 line_indicator_width = requested_line_width as f32;
3946 }
3947
3948 if let Some(color) = background_color {
3949 let width = indent_guide.single_indent_width - px(line_indicator_width);
3950 cx.paint_quad(fill(
3951 Bounds {
3952 origin: point(
3953 indent_guide.origin.x + px(line_indicator_width),
3954 indent_guide.origin.y,
3955 ),
3956 size: size(width, indent_guide.length),
3957 },
3958 color,
3959 ));
3960 }
3961 }
3962 }
3963
3964 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3965 let is_singleton = self.editor.read(cx).is_singleton(cx);
3966
3967 let line_height = layout.position_map.line_height;
3968 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3969
3970 for LineNumberLayout {
3971 shaped_line,
3972 hitbox,
3973 display_row,
3974 } in layout.line_numbers.values()
3975 {
3976 let Some(hitbox) = hitbox else {
3977 continue;
3978 };
3979
3980 let is_active = layout.active_rows.contains_key(&display_row);
3981
3982 let color = if is_active {
3983 cx.theme().colors().editor_active_line_number
3984 } else if !is_singleton && hitbox.is_hovered(cx) {
3985 cx.theme().colors().editor_hover_line_number
3986 } else {
3987 cx.theme().colors().editor_line_number
3988 };
3989
3990 let Some(line) = self
3991 .shape_line_number(shaped_line.text.clone(), color, cx)
3992 .log_err()
3993 else {
3994 continue;
3995 };
3996 let Some(()) = line.paint(hitbox.origin, line_height, cx).log_err() else {
3997 continue;
3998 };
3999 // In singleton buffers, we select corresponding lines on the line number click, so use | -like cursor.
4000 // In multi buffers, we open file at the line number clicked, so use a pointing hand cursor.
4001 if is_singleton {
4002 cx.set_cursor_style(CursorStyle::IBeam, hitbox);
4003 } else {
4004 cx.set_cursor_style(CursorStyle::PointingHand, hitbox);
4005 }
4006 }
4007 }
4008
4009 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
4010 if layout.display_hunks.is_empty() {
4011 return;
4012 }
4013
4014 let line_height = layout.position_map.line_height;
4015 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4016 for (hunk, hitbox) in &layout.display_hunks {
4017 let hunk_to_paint = match hunk {
4018 DisplayDiffHunk::Folded { .. } => {
4019 let hunk_bounds = Self::diff_hunk_bounds(
4020 &layout.position_map.snapshot,
4021 line_height,
4022 layout.gutter_hitbox.bounds,
4023 hunk,
4024 );
4025 Some((
4026 hunk_bounds,
4027 cx.theme().status().modified,
4028 Corners::all(px(0.)),
4029 ))
4030 }
4031 DisplayDiffHunk::Unfolded { status, .. } => {
4032 hitbox.as_ref().map(|hunk_hitbox| match status {
4033 DiffHunkStatus::Added => (
4034 hunk_hitbox.bounds,
4035 cx.theme().status().created,
4036 Corners::all(px(0.)),
4037 ),
4038 DiffHunkStatus::Modified => (
4039 hunk_hitbox.bounds,
4040 cx.theme().status().modified,
4041 Corners::all(px(0.)),
4042 ),
4043 DiffHunkStatus::Removed => (
4044 Bounds::new(
4045 point(
4046 hunk_hitbox.origin.x - hunk_hitbox.size.width,
4047 hunk_hitbox.origin.y,
4048 ),
4049 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
4050 ),
4051 cx.theme().status().deleted,
4052 Corners::all(1. * line_height),
4053 ),
4054 })
4055 }
4056 };
4057
4058 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
4059 cx.paint_quad(quad(
4060 hunk_bounds,
4061 corner_radii,
4062 background_color,
4063 Edges::default(),
4064 transparent_black(),
4065 ));
4066 }
4067 }
4068 });
4069 }
4070
4071 pub(super) fn diff_hunk_bounds(
4072 snapshot: &EditorSnapshot,
4073 line_height: Pixels,
4074 gutter_bounds: Bounds<Pixels>,
4075 hunk: &DisplayDiffHunk,
4076 ) -> Bounds<Pixels> {
4077 let scroll_position = snapshot.scroll_position();
4078 let scroll_top = scroll_position.y * line_height;
4079
4080 match hunk {
4081 DisplayDiffHunk::Folded { display_row, .. } => {
4082 let start_y = display_row.as_f32() * line_height - scroll_top;
4083 let end_y = start_y + line_height;
4084
4085 let width = Self::diff_hunk_strip_width(line_height);
4086 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4087 let highlight_size = size(width, end_y - start_y);
4088 Bounds::new(highlight_origin, highlight_size)
4089 }
4090 DisplayDiffHunk::Unfolded {
4091 display_row_range,
4092 status,
4093 ..
4094 } => match status {
4095 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
4096 let start_row = display_row_range.start;
4097 let end_row = display_row_range.end;
4098 // If we're in a multibuffer, row range span might include an
4099 // excerpt header, so if we were to draw the marker straight away,
4100 // the hunk might include the rows of that header.
4101 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
4102 // Instead, we simply check whether the range we're dealing with includes
4103 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
4104 let end_row_in_current_excerpt = snapshot
4105 .blocks_in_range(start_row..end_row)
4106 .find_map(|(start_row, block)| {
4107 if matches!(block, Block::ExcerptBoundary { .. }) {
4108 Some(start_row)
4109 } else {
4110 None
4111 }
4112 })
4113 .unwrap_or(end_row);
4114
4115 let start_y = start_row.as_f32() * line_height - scroll_top;
4116 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
4117
4118 let width = Self::diff_hunk_strip_width(line_height);
4119 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4120 let highlight_size = size(width, end_y - start_y);
4121 Bounds::new(highlight_origin, highlight_size)
4122 }
4123 DiffHunkStatus::Removed => {
4124 let row = display_row_range.start;
4125
4126 let offset = line_height / 2.;
4127 let start_y = row.as_f32() * line_height - offset - scroll_top;
4128 let end_y = start_y + line_height;
4129
4130 let width = (0.35 * line_height).floor();
4131 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4132 let highlight_size = size(width, end_y - start_y);
4133 Bounds::new(highlight_origin, highlight_size)
4134 }
4135 },
4136 }
4137 }
4138
4139 /// Returns the width of the diff strip that will be displayed in the gutter.
4140 pub(super) fn diff_hunk_strip_width(line_height: Pixels) -> Pixels {
4141 // We floor the value to prevent pixel rounding.
4142 (0.275 * line_height).floor()
4143 }
4144
4145 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4146 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4147 cx.with_element_namespace("crease_toggles", |cx| {
4148 for crease_toggle in layout.crease_toggles.iter_mut().flatten() {
4149 crease_toggle.paint(cx);
4150 }
4151 });
4152
4153 for test_indicator in layout.test_indicators.iter_mut() {
4154 test_indicator.paint(cx);
4155 }
4156
4157 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
4158 indicator.paint(cx);
4159 }
4160 });
4161 }
4162
4163 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4164 for (_, hunk_hitbox) in &layout.display_hunks {
4165 if let Some(hunk_hitbox) = hunk_hitbox {
4166 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
4167 }
4168 }
4169
4170 let show_git_gutter = layout
4171 .position_map
4172 .snapshot
4173 .show_git_diff_gutter
4174 .unwrap_or_else(|| {
4175 matches!(
4176 ProjectSettings::get_global(cx).git.git_gutter,
4177 Some(GitGutterSetting::TrackedFiles)
4178 )
4179 });
4180 if show_git_gutter {
4181 Self::paint_diff_hunks(layout, cx)
4182 }
4183
4184 let highlight_width = 0.275 * layout.position_map.line_height;
4185 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
4186 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4187 for (range, color) in &layout.highlighted_gutter_ranges {
4188 let start_row = if range.start.row() < layout.visible_display_row_range.start {
4189 layout.visible_display_row_range.start - DisplayRow(1)
4190 } else {
4191 range.start.row()
4192 };
4193 let end_row = if range.end.row() > layout.visible_display_row_range.end {
4194 layout.visible_display_row_range.end + DisplayRow(1)
4195 } else {
4196 range.end.row()
4197 };
4198
4199 let start_y = layout.gutter_hitbox.top()
4200 + start_row.0 as f32 * layout.position_map.line_height
4201 - layout.position_map.scroll_pixel_position.y;
4202 let end_y = layout.gutter_hitbox.top()
4203 + (end_row.0 + 1) as f32 * layout.position_map.line_height
4204 - layout.position_map.scroll_pixel_position.y;
4205 let bounds = Bounds::from_corners(
4206 point(layout.gutter_hitbox.left(), start_y),
4207 point(layout.gutter_hitbox.left() + highlight_width, end_y),
4208 );
4209 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
4210 }
4211 });
4212 }
4213
4214 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4215 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
4216 return;
4217 };
4218
4219 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4220 for mut blame_element in blamed_display_rows.into_iter() {
4221 blame_element.paint(cx);
4222 }
4223 })
4224 }
4225
4226 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4227 cx.with_content_mask(
4228 Some(ContentMask {
4229 bounds: layout.text_hitbox.bounds,
4230 }),
4231 |cx| {
4232 let cursor_style = if self
4233 .editor
4234 .read(cx)
4235 .hovered_link_state
4236 .as_ref()
4237 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
4238 {
4239 CursorStyle::PointingHand
4240 } else {
4241 CursorStyle::IBeam
4242 };
4243 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
4244
4245 let invisible_display_ranges = self.paint_highlights(layout, cx);
4246 self.paint_lines(&invisible_display_ranges, layout, cx);
4247 self.paint_redactions(layout, cx);
4248 self.paint_cursors(layout, cx);
4249 self.paint_inline_blame(layout, cx);
4250 cx.with_element_namespace("crease_trailers", |cx| {
4251 for trailer in layout.crease_trailers.iter_mut().flatten() {
4252 trailer.element.paint(cx);
4253 }
4254 });
4255 },
4256 )
4257 }
4258
4259 fn paint_highlights(
4260 &mut self,
4261 layout: &mut EditorLayout,
4262 cx: &mut WindowContext,
4263 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
4264 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4265 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
4266 let line_end_overshoot = 0.15 * layout.position_map.line_height;
4267 for (range, color) in &layout.highlighted_ranges {
4268 self.paint_highlighted_range(
4269 range.clone(),
4270 *color,
4271 Pixels::ZERO,
4272 line_end_overshoot,
4273 layout,
4274 cx,
4275 );
4276 }
4277
4278 let corner_radius = 0.15 * layout.position_map.line_height;
4279
4280 for (player_color, selections) in &layout.selections {
4281 for selection in selections.iter() {
4282 self.paint_highlighted_range(
4283 selection.range.clone(),
4284 player_color.selection,
4285 corner_radius,
4286 corner_radius * 2.,
4287 layout,
4288 cx,
4289 );
4290
4291 if selection.is_local && !selection.range.is_empty() {
4292 invisible_display_ranges.push(selection.range.clone());
4293 }
4294 }
4295 }
4296 invisible_display_ranges
4297 })
4298 }
4299
4300 fn paint_lines(
4301 &mut self,
4302 invisible_display_ranges: &[Range<DisplayPoint>],
4303 layout: &mut EditorLayout,
4304 cx: &mut WindowContext,
4305 ) {
4306 let whitespace_setting = self
4307 .editor
4308 .read(cx)
4309 .buffer
4310 .read(cx)
4311 .settings_at(0, cx)
4312 .show_whitespaces;
4313
4314 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
4315 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
4316 line_with_invisibles.draw(
4317 layout,
4318 row,
4319 layout.content_origin,
4320 whitespace_setting,
4321 invisible_display_ranges,
4322 cx,
4323 )
4324 }
4325
4326 for line_element in &mut layout.line_elements {
4327 line_element.paint(cx);
4328 }
4329 }
4330
4331 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
4332 if layout.redacted_ranges.is_empty() {
4333 return;
4334 }
4335
4336 let line_end_overshoot = layout.line_end_overshoot();
4337
4338 // A softer than perfect black
4339 let redaction_color = gpui::rgb(0x0e1111);
4340
4341 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4342 for range in layout.redacted_ranges.iter() {
4343 self.paint_highlighted_range(
4344 range.clone(),
4345 redaction_color.into(),
4346 Pixels::ZERO,
4347 line_end_overshoot,
4348 layout,
4349 cx,
4350 );
4351 }
4352 });
4353 }
4354
4355 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4356 for cursor in &mut layout.visible_cursors {
4357 cursor.paint(layout.content_origin, cx);
4358 }
4359 }
4360
4361 fn paint_scrollbars(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4362 let (scrollbar_x, scrollbar_y) = layout.scrollbars_layout.as_xy();
4363
4364 if let Some(scrollbar_layout) = scrollbar_x {
4365 let hitbox = scrollbar_layout.hitbox.clone();
4366 let text_unit_size = scrollbar_layout.text_unit_size;
4367 let visible_range = scrollbar_layout.visible_range.clone();
4368 let thumb_bounds = scrollbar_layout.thumb_bounds();
4369
4370 if scrollbar_layout.visible {
4371 cx.paint_layer(hitbox.bounds, |cx| {
4372 cx.paint_quad(quad(
4373 hitbox.bounds,
4374 Corners::default(),
4375 cx.theme().colors().scrollbar_track_background,
4376 Edges {
4377 top: Pixels::ZERO,
4378 right: Pixels::ZERO,
4379 bottom: Pixels::ZERO,
4380 left: Pixels::ZERO,
4381 },
4382 cx.theme().colors().scrollbar_track_border,
4383 ));
4384
4385 cx.paint_quad(quad(
4386 thumb_bounds,
4387 Corners::default(),
4388 cx.theme().colors().scrollbar_thumb_background,
4389 Edges {
4390 top: Pixels::ZERO,
4391 right: Pixels::ZERO,
4392 bottom: Pixels::ZERO,
4393 left: ScrollbarLayout::BORDER_WIDTH,
4394 },
4395 cx.theme().colors().scrollbar_thumb_border,
4396 ));
4397 })
4398 }
4399
4400 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4401
4402 cx.on_mouse_event({
4403 let editor = self.editor.clone();
4404
4405 // there may be a way to avoid this clone
4406 let hitbox = hitbox.clone();
4407
4408 let mut mouse_position = cx.mouse_position();
4409 move |event: &MouseMoveEvent, phase, cx| {
4410 if phase == DispatchPhase::Capture {
4411 return;
4412 }
4413
4414 editor.update(cx, |editor, cx| {
4415 if event.pressed_button == Some(MouseButton::Left)
4416 && editor
4417 .scroll_manager
4418 .is_dragging_scrollbar(Axis::Horizontal)
4419 {
4420 let x = mouse_position.x;
4421 let new_x = event.position.x;
4422 if (hitbox.left()..hitbox.right()).contains(&x) {
4423 let mut position = editor.scroll_position(cx);
4424
4425 position.x += (new_x - x) / text_unit_size;
4426 if position.x < 0.0 {
4427 position.x = 0.0;
4428 }
4429 editor.set_scroll_position(position, cx);
4430 }
4431
4432 cx.stop_propagation();
4433 } else {
4434 editor.scroll_manager.set_is_dragging_scrollbar(
4435 Axis::Horizontal,
4436 false,
4437 cx,
4438 );
4439
4440 if hitbox.is_hovered(cx) {
4441 editor.scroll_manager.show_scrollbar(cx);
4442 }
4443 }
4444 mouse_position = event.position;
4445 })
4446 }
4447 });
4448
4449 if self
4450 .editor
4451 .read(cx)
4452 .scroll_manager
4453 .is_dragging_scrollbar(Axis::Horizontal)
4454 {
4455 cx.on_mouse_event({
4456 let editor = self.editor.clone();
4457 move |_: &MouseUpEvent, phase, cx| {
4458 if phase == DispatchPhase::Capture {
4459 return;
4460 }
4461
4462 editor.update(cx, |editor, cx| {
4463 editor.scroll_manager.set_is_dragging_scrollbar(
4464 Axis::Horizontal,
4465 false,
4466 cx,
4467 );
4468 cx.stop_propagation();
4469 });
4470 }
4471 });
4472 } else {
4473 cx.on_mouse_event({
4474 let editor = self.editor.clone();
4475
4476 move |event: &MouseDownEvent, phase, cx| {
4477 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4478 return;
4479 }
4480
4481 editor.update(cx, |editor, cx| {
4482 editor.scroll_manager.set_is_dragging_scrollbar(
4483 Axis::Horizontal,
4484 true,
4485 cx,
4486 );
4487
4488 let x = event.position.x;
4489
4490 if x < thumb_bounds.left() || thumb_bounds.right() < x {
4491 let center_row =
4492 ((x - hitbox.left()) / text_unit_size).round() as u32;
4493 let top_row = center_row.saturating_sub(
4494 (visible_range.end - visible_range.start) as u32 / 2,
4495 );
4496
4497 let mut position = editor.scroll_position(cx);
4498 position.x = top_row as f32;
4499
4500 editor.set_scroll_position(position, cx);
4501 } else {
4502 editor.scroll_manager.show_scrollbar(cx);
4503 }
4504
4505 cx.stop_propagation();
4506 });
4507 }
4508 });
4509 }
4510 }
4511
4512 if let Some(scrollbar_layout) = scrollbar_y {
4513 let hitbox = scrollbar_layout.hitbox.clone();
4514 let text_unit_size = scrollbar_layout.text_unit_size;
4515 let visible_range = scrollbar_layout.visible_range.clone();
4516 let thumb_bounds = scrollbar_layout.thumb_bounds();
4517
4518 if scrollbar_layout.visible {
4519 cx.paint_layer(hitbox.bounds, |cx| {
4520 cx.paint_quad(quad(
4521 hitbox.bounds,
4522 Corners::default(),
4523 cx.theme().colors().scrollbar_track_background,
4524 Edges {
4525 top: Pixels::ZERO,
4526 right: Pixels::ZERO,
4527 bottom: Pixels::ZERO,
4528 left: ScrollbarLayout::BORDER_WIDTH,
4529 },
4530 cx.theme().colors().scrollbar_track_border,
4531 ));
4532
4533 let fast_markers =
4534 self.collect_fast_scrollbar_markers(layout, &scrollbar_layout, cx);
4535 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
4536 self.refresh_slow_scrollbar_markers(layout, &scrollbar_layout, cx);
4537
4538 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
4539 for marker in markers.iter().chain(&fast_markers) {
4540 let mut marker = marker.clone();
4541 marker.bounds.origin += hitbox.origin;
4542 cx.paint_quad(marker);
4543 }
4544
4545 cx.paint_quad(quad(
4546 thumb_bounds,
4547 Corners::default(),
4548 cx.theme().colors().scrollbar_thumb_background,
4549 Edges {
4550 top: Pixels::ZERO,
4551 right: Pixels::ZERO,
4552 bottom: Pixels::ZERO,
4553 left: ScrollbarLayout::BORDER_WIDTH,
4554 },
4555 cx.theme().colors().scrollbar_thumb_border,
4556 ));
4557 });
4558 }
4559
4560 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4561
4562 cx.on_mouse_event({
4563 let editor = self.editor.clone();
4564
4565 let hitbox = hitbox.clone();
4566
4567 let mut mouse_position = cx.mouse_position();
4568 move |event: &MouseMoveEvent, phase, cx| {
4569 if phase == DispatchPhase::Capture {
4570 return;
4571 }
4572
4573 editor.update(cx, |editor, cx| {
4574 if event.pressed_button == Some(MouseButton::Left)
4575 && editor.scroll_manager.is_dragging_scrollbar(Axis::Vertical)
4576 {
4577 let y = mouse_position.y;
4578 let new_y = event.position.y;
4579 if (hitbox.top()..hitbox.bottom()).contains(&y) {
4580 let mut position = editor.scroll_position(cx);
4581 position.y += (new_y - y) / text_unit_size;
4582 if position.y < 0.0 {
4583 position.y = 0.0;
4584 }
4585 editor.set_scroll_position(position, cx);
4586 }
4587 } else {
4588 editor.scroll_manager.set_is_dragging_scrollbar(
4589 Axis::Vertical,
4590 false,
4591 cx,
4592 );
4593
4594 if hitbox.is_hovered(cx) {
4595 editor.scroll_manager.show_scrollbar(cx);
4596 }
4597 }
4598 mouse_position = event.position;
4599 })
4600 }
4601 });
4602
4603 if self
4604 .editor
4605 .read(cx)
4606 .scroll_manager
4607 .is_dragging_scrollbar(Axis::Vertical)
4608 {
4609 cx.on_mouse_event({
4610 let editor = self.editor.clone();
4611 move |_: &MouseUpEvent, phase, cx| {
4612 if phase == DispatchPhase::Capture {
4613 return;
4614 }
4615
4616 editor.update(cx, |editor, cx| {
4617 editor.scroll_manager.set_is_dragging_scrollbar(
4618 Axis::Vertical,
4619 false,
4620 cx,
4621 );
4622 cx.stop_propagation();
4623 });
4624 }
4625 });
4626 } else {
4627 cx.on_mouse_event({
4628 let editor = self.editor.clone();
4629
4630 move |event: &MouseDownEvent, phase, cx| {
4631 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4632 return;
4633 }
4634
4635 editor.update(cx, |editor, cx| {
4636 editor.scroll_manager.set_is_dragging_scrollbar(
4637 Axis::Vertical,
4638 true,
4639 cx,
4640 );
4641
4642 let y = event.position.y;
4643 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
4644 let center_row =
4645 ((y - hitbox.top()) / text_unit_size).round() as u32;
4646 let top_row = center_row.saturating_sub(
4647 (visible_range.end - visible_range.start) as u32 / 2,
4648 );
4649 let mut position = editor.scroll_position(cx);
4650 position.y = top_row as f32;
4651 editor.set_scroll_position(position, cx);
4652 } else {
4653 editor.scroll_manager.show_scrollbar(cx);
4654 }
4655
4656 cx.stop_propagation();
4657 });
4658 }
4659 });
4660 }
4661 }
4662 }
4663
4664 fn collect_fast_scrollbar_markers(
4665 &self,
4666 layout: &EditorLayout,
4667 scrollbar_layout: &ScrollbarLayout,
4668 cx: &mut WindowContext,
4669 ) -> Vec<PaintQuad> {
4670 const LIMIT: usize = 100;
4671 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
4672 return vec![];
4673 }
4674 let cursor_ranges = layout
4675 .cursors
4676 .iter()
4677 .map(|(point, color)| ColoredRange {
4678 start: point.row(),
4679 end: point.row(),
4680 color: *color,
4681 })
4682 .collect_vec();
4683 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
4684 }
4685
4686 fn refresh_slow_scrollbar_markers(
4687 &self,
4688 layout: &EditorLayout,
4689 scrollbar_layout: &ScrollbarLayout,
4690 cx: &mut WindowContext,
4691 ) {
4692 self.editor.update(cx, |editor, cx| {
4693 if !editor.is_singleton(cx)
4694 || !editor
4695 .scrollbar_marker_state
4696 .should_refresh(scrollbar_layout.hitbox.size)
4697 {
4698 return;
4699 }
4700
4701 let scrollbar_layout = scrollbar_layout.clone();
4702 let background_highlights = editor.background_highlights.clone();
4703 let snapshot = layout.position_map.snapshot.clone();
4704 let theme = cx.theme().clone();
4705 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
4706
4707 editor.scrollbar_marker_state.dirty = false;
4708 editor.scrollbar_marker_state.pending_refresh =
4709 Some(cx.spawn(|editor, mut cx| async move {
4710 let scrollbar_size = scrollbar_layout.hitbox.size;
4711 let scrollbar_markers = cx
4712 .background_executor()
4713 .spawn(async move {
4714 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
4715 let mut marker_quads = Vec::new();
4716 if scrollbar_settings.git_diff {
4717 let marker_row_ranges = snapshot
4718 .diff_map
4719 .diff_hunks(&snapshot.buffer_snapshot)
4720 .map(|hunk| {
4721 let start_display_row =
4722 MultiBufferPoint::new(hunk.row_range.start.0, 0)
4723 .to_display_point(&snapshot.display_snapshot)
4724 .row();
4725 let mut end_display_row =
4726 MultiBufferPoint::new(hunk.row_range.end.0, 0)
4727 .to_display_point(&snapshot.display_snapshot)
4728 .row();
4729 if end_display_row != start_display_row {
4730 end_display_row.0 -= 1;
4731 }
4732 let color = match hunk_status(&hunk) {
4733 DiffHunkStatus::Added => theme.status().created,
4734 DiffHunkStatus::Modified => theme.status().modified,
4735 DiffHunkStatus::Removed => theme.status().deleted,
4736 };
4737 ColoredRange {
4738 start: start_display_row,
4739 end: end_display_row,
4740 color,
4741 }
4742 });
4743
4744 marker_quads.extend(
4745 scrollbar_layout
4746 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
4747 );
4748 }
4749
4750 for (background_highlight_id, (_, background_ranges)) in
4751 background_highlights.iter()
4752 {
4753 let is_search_highlights = *background_highlight_id
4754 == TypeId::of::<BufferSearchHighlights>();
4755 let is_symbol_occurrences = *background_highlight_id
4756 == TypeId::of::<DocumentHighlightRead>()
4757 || *background_highlight_id
4758 == TypeId::of::<DocumentHighlightWrite>();
4759 if (is_search_highlights && scrollbar_settings.search_results)
4760 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
4761 {
4762 let mut color = theme.status().info;
4763 if is_symbol_occurrences {
4764 color.fade_out(0.5);
4765 }
4766 let marker_row_ranges = background_ranges.iter().map(|range| {
4767 let display_start = range
4768 .start
4769 .to_display_point(&snapshot.display_snapshot);
4770 let display_end =
4771 range.end.to_display_point(&snapshot.display_snapshot);
4772 ColoredRange {
4773 start: display_start.row(),
4774 end: display_end.row(),
4775 color,
4776 }
4777 });
4778 marker_quads.extend(
4779 scrollbar_layout
4780 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
4781 );
4782 }
4783 }
4784
4785 if scrollbar_settings.diagnostics != ScrollbarDiagnostics::None {
4786 let diagnostics = snapshot
4787 .buffer_snapshot
4788 .diagnostics_in_range(Point::zero()..max_point, false)
4789 .map(|DiagnosticEntry { diagnostic, range }| DiagnosticEntry {
4790 diagnostic,
4791 range: range.to_point(&snapshot.buffer_snapshot),
4792 })
4793 // Don't show diagnostics the user doesn't care about
4794 .filter(|diagnostic| {
4795 match (
4796 scrollbar_settings.diagnostics,
4797 diagnostic.diagnostic.severity,
4798 ) {
4799 (ScrollbarDiagnostics::All, _) => true,
4800 (
4801 ScrollbarDiagnostics::Error,
4802 DiagnosticSeverity::ERROR,
4803 ) => true,
4804 (
4805 ScrollbarDiagnostics::Warning,
4806 DiagnosticSeverity::ERROR
4807 | DiagnosticSeverity::WARNING,
4808 ) => true,
4809 (
4810 ScrollbarDiagnostics::Information,
4811 DiagnosticSeverity::ERROR
4812 | DiagnosticSeverity::WARNING
4813 | DiagnosticSeverity::INFORMATION,
4814 ) => true,
4815 (_, _) => false,
4816 }
4817 })
4818 // We want to sort by severity, in order to paint the most severe diagnostics last.
4819 .sorted_by_key(|diagnostic| {
4820 std::cmp::Reverse(diagnostic.diagnostic.severity)
4821 });
4822
4823 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
4824 let start_display = diagnostic
4825 .range
4826 .start
4827 .to_display_point(&snapshot.display_snapshot);
4828 let end_display = diagnostic
4829 .range
4830 .end
4831 .to_display_point(&snapshot.display_snapshot);
4832 let color = match diagnostic.diagnostic.severity {
4833 DiagnosticSeverity::ERROR => theme.status().error,
4834 DiagnosticSeverity::WARNING => theme.status().warning,
4835 DiagnosticSeverity::INFORMATION => theme.status().info,
4836 _ => theme.status().hint,
4837 };
4838 ColoredRange {
4839 start: start_display.row(),
4840 end: end_display.row(),
4841 color,
4842 }
4843 });
4844 marker_quads.extend(
4845 scrollbar_layout
4846 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
4847 );
4848 }
4849
4850 Arc::from(marker_quads)
4851 })
4852 .await;
4853
4854 editor.update(&mut cx, |editor, cx| {
4855 editor.scrollbar_marker_state.markers = scrollbar_markers;
4856 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
4857 editor.scrollbar_marker_state.pending_refresh = None;
4858 cx.notify();
4859 })?;
4860
4861 Ok(())
4862 }));
4863 });
4864 }
4865
4866 #[allow(clippy::too_many_arguments)]
4867 fn paint_highlighted_range(
4868 &self,
4869 range: Range<DisplayPoint>,
4870 color: Hsla,
4871 corner_radius: Pixels,
4872 line_end_overshoot: Pixels,
4873 layout: &EditorLayout,
4874 cx: &mut WindowContext,
4875 ) {
4876 let start_row = layout.visible_display_row_range.start;
4877 let end_row = layout.visible_display_row_range.end;
4878 if range.start != range.end {
4879 let row_range = if range.end.column() == 0 {
4880 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
4881 } else {
4882 cmp::max(range.start.row(), start_row)
4883 ..cmp::min(range.end.row().next_row(), end_row)
4884 };
4885
4886 let highlighted_range = HighlightedRange {
4887 color,
4888 line_height: layout.position_map.line_height,
4889 corner_radius,
4890 start_y: layout.content_origin.y
4891 + row_range.start.as_f32() * layout.position_map.line_height
4892 - layout.position_map.scroll_pixel_position.y,
4893 lines: row_range
4894 .iter_rows()
4895 .map(|row| {
4896 let line_layout =
4897 &layout.position_map.line_layouts[row.minus(start_row) as usize];
4898 HighlightedRangeLine {
4899 start_x: if row == range.start.row() {
4900 layout.content_origin.x
4901 + line_layout.x_for_index(range.start.column() as usize)
4902 - layout.position_map.scroll_pixel_position.x
4903 } else {
4904 layout.content_origin.x
4905 - layout.position_map.scroll_pixel_position.x
4906 },
4907 end_x: if row == range.end.row() {
4908 layout.content_origin.x
4909 + line_layout.x_for_index(range.end.column() as usize)
4910 - layout.position_map.scroll_pixel_position.x
4911 } else {
4912 layout.content_origin.x + line_layout.width + line_end_overshoot
4913 - layout.position_map.scroll_pixel_position.x
4914 },
4915 }
4916 })
4917 .collect(),
4918 };
4919
4920 highlighted_range.paint(layout.text_hitbox.bounds, cx);
4921 }
4922 }
4923
4924 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4925 if let Some(mut inline_blame) = layout.inline_blame.take() {
4926 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4927 inline_blame.paint(cx);
4928 })
4929 }
4930 }
4931
4932 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4933 for mut block in layout.blocks.drain(..) {
4934 block.element.paint(cx);
4935 }
4936 }
4937
4938 fn paint_inline_completion_popover(
4939 &mut self,
4940 layout: &mut EditorLayout,
4941 cx: &mut WindowContext,
4942 ) {
4943 if let Some(inline_completion_popover) = layout.inline_completion_popover.as_mut() {
4944 inline_completion_popover.paint(cx);
4945 }
4946 }
4947
4948 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4949 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
4950 mouse_context_menu.paint(cx);
4951 }
4952 }
4953
4954 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
4955 cx.on_mouse_event({
4956 let position_map = layout.position_map.clone();
4957 let editor = self.editor.clone();
4958 let hitbox = layout.hitbox.clone();
4959 let mut delta = ScrollDelta::default();
4960
4961 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
4962 // accidentally turn off their scrolling.
4963 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
4964
4965 move |event: &ScrollWheelEvent, phase, cx| {
4966 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
4967 delta = delta.coalesce(event.delta);
4968 editor.update(cx, |editor, cx| {
4969 let position_map: &PositionMap = &position_map;
4970
4971 let line_height = position_map.line_height;
4972 let max_glyph_width = position_map.em_width;
4973 let (delta, axis) = match delta {
4974 gpui::ScrollDelta::Pixels(mut pixels) => {
4975 //Trackpad
4976 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
4977 (pixels, axis)
4978 }
4979
4980 gpui::ScrollDelta::Lines(lines) => {
4981 //Not trackpad
4982 let pixels =
4983 point(lines.x * max_glyph_width, lines.y * line_height);
4984 (pixels, None)
4985 }
4986 };
4987
4988 let current_scroll_position = position_map.snapshot.scroll_position();
4989 let x = (current_scroll_position.x * max_glyph_width
4990 - (delta.x * scroll_sensitivity))
4991 / max_glyph_width;
4992 let y = (current_scroll_position.y * line_height
4993 - (delta.y * scroll_sensitivity))
4994 / line_height;
4995 let mut scroll_position =
4996 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
4997 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
4998 if forbid_vertical_scroll {
4999 scroll_position.y = current_scroll_position.y;
5000 }
5001
5002 if scroll_position != current_scroll_position {
5003 editor.scroll(scroll_position, axis, cx);
5004 cx.stop_propagation();
5005 } else if y < 0. {
5006 // Due to clamping, we may fail to detect cases of overscroll to the top;
5007 // We want the scroll manager to get an update in such cases and detect the change of direction
5008 // on the next frame.
5009 cx.notify();
5010 }
5011 });
5012 }
5013 }
5014 });
5015 }
5016
5017 fn paint_mouse_listeners(
5018 &mut self,
5019 layout: &EditorLayout,
5020 hovered_hunk: Option<HoveredHunk>,
5021 cx: &mut WindowContext,
5022 ) {
5023 self.paint_scroll_wheel_listener(layout, cx);
5024
5025 cx.on_mouse_event({
5026 let position_map = layout.position_map.clone();
5027 let editor = self.editor.clone();
5028 let text_hitbox = layout.text_hitbox.clone();
5029 let gutter_hitbox = layout.gutter_hitbox.clone();
5030 let line_numbers = layout.line_numbers.clone();
5031
5032 move |event: &MouseDownEvent, phase, cx| {
5033 if phase == DispatchPhase::Bubble {
5034 match event.button {
5035 MouseButton::Left => editor.update(cx, |editor, cx| {
5036 Self::mouse_left_down(
5037 editor,
5038 event,
5039 hovered_hunk.clone(),
5040 &position_map,
5041 &text_hitbox,
5042 &gutter_hitbox,
5043 line_numbers.as_ref(),
5044 cx,
5045 );
5046 }),
5047 MouseButton::Right => editor.update(cx, |editor, cx| {
5048 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
5049 }),
5050 MouseButton::Middle => editor.update(cx, |editor, cx| {
5051 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
5052 }),
5053 _ => {}
5054 };
5055 }
5056 }
5057 });
5058
5059 cx.on_mouse_event({
5060 let editor = self.editor.clone();
5061 let position_map = layout.position_map.clone();
5062 let text_hitbox = layout.text_hitbox.clone();
5063
5064 move |event: &MouseUpEvent, phase, cx| {
5065 if phase == DispatchPhase::Bubble {
5066 editor.update(cx, |editor, cx| {
5067 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
5068 });
5069 }
5070 }
5071 });
5072 cx.on_mouse_event({
5073 let position_map = layout.position_map.clone();
5074 let editor = self.editor.clone();
5075 let text_hitbox = layout.text_hitbox.clone();
5076 let gutter_hitbox = layout.gutter_hitbox.clone();
5077
5078 move |event: &MouseMoveEvent, phase, cx| {
5079 if phase == DispatchPhase::Bubble {
5080 editor.update(cx, |editor, cx| {
5081 if editor.hover_state.focused(cx) {
5082 return;
5083 }
5084 if event.pressed_button == Some(MouseButton::Left)
5085 || event.pressed_button == Some(MouseButton::Middle)
5086 {
5087 Self::mouse_dragged(
5088 editor,
5089 event,
5090 &position_map,
5091 text_hitbox.bounds,
5092 cx,
5093 )
5094 }
5095
5096 Self::mouse_moved(
5097 editor,
5098 event,
5099 &position_map,
5100 &text_hitbox,
5101 &gutter_hitbox,
5102 cx,
5103 )
5104 });
5105 }
5106 }
5107 });
5108 }
5109
5110 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
5111 bounds.top_right().x - self.style.scrollbar_width
5112 }
5113
5114 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
5115 let style = &self.style;
5116 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5117 let layout = cx
5118 .text_system()
5119 .shape_line(
5120 SharedString::from(" ".repeat(column)),
5121 font_size,
5122 &[TextRun {
5123 len: column,
5124 font: style.text.font(),
5125 color: Hsla::default(),
5126 background_color: None,
5127 underline: None,
5128 strikethrough: None,
5129 }],
5130 )
5131 .unwrap();
5132
5133 layout.width
5134 }
5135
5136 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
5137 let digit_count = (snapshot.widest_line_number() as f32).log10().floor() as usize + 1;
5138 self.column_pixels(digit_count, cx)
5139 }
5140
5141 fn shape_line_number(
5142 &self,
5143 text: SharedString,
5144 color: Hsla,
5145 cx: &WindowContext,
5146 ) -> anyhow::Result<ShapedLine> {
5147 let run = TextRun {
5148 len: text.len(),
5149 font: self.style.text.font(),
5150 color,
5151 background_color: None,
5152 underline: None,
5153 strikethrough: None,
5154 };
5155 cx.text_system().shape_line(
5156 text,
5157 self.style.text.font_size.to_pixels(cx.rem_size()),
5158 &[run],
5159 )
5160 }
5161}
5162
5163fn header_jump_data(
5164 snapshot: &EditorSnapshot,
5165 block_row_start: DisplayRow,
5166 height: u32,
5167 for_excerpt: &ExcerptInfo,
5168) -> JumpData {
5169 let range = &for_excerpt.range;
5170 let buffer = &for_excerpt.buffer;
5171 let jump_anchor = range
5172 .primary
5173 .as_ref()
5174 .map_or(range.context.start, |primary| primary.start);
5175
5176 let excerpt_start = range.context.start;
5177 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
5178 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
5179 0
5180 } else {
5181 let excerpt_start_row = language::ToPoint::to_point(&excerpt_start, buffer).row;
5182 jump_position.row - excerpt_start_row
5183 };
5184
5185 let line_offset_from_top = (block_row_start.0 + height + offset_from_excerpt_start)
5186 .saturating_sub(
5187 snapshot
5188 .scroll_anchor
5189 .scroll_position(&snapshot.display_snapshot)
5190 .y as u32,
5191 );
5192
5193 JumpData::MultiBufferPoint {
5194 excerpt_id: for_excerpt.id,
5195 anchor: jump_anchor,
5196 position: language::ToPoint::to_point(&jump_anchor, buffer),
5197 line_offset_from_top,
5198 }
5199}
5200
5201fn all_edits_insertions_or_deletions(
5202 edits: &Vec<(Range<Anchor>, String)>,
5203 snapshot: &MultiBufferSnapshot,
5204) -> bool {
5205 let mut all_insertions = true;
5206 let mut all_deletions = true;
5207
5208 for (range, new_text) in edits.iter() {
5209 let range_is_empty = range.to_offset(&snapshot).is_empty();
5210 let text_is_empty = new_text.is_empty();
5211
5212 if range_is_empty != text_is_empty {
5213 if range_is_empty {
5214 all_deletions = false;
5215 } else {
5216 all_insertions = false;
5217 }
5218 } else {
5219 return false;
5220 }
5221
5222 if !all_insertions && !all_deletions {
5223 return false;
5224 }
5225 }
5226 all_insertions || all_deletions
5227}
5228
5229#[allow(clippy::too_many_arguments)]
5230fn prepaint_gutter_button(
5231 button: IconButton,
5232 row: DisplayRow,
5233 line_height: Pixels,
5234 gutter_dimensions: &GutterDimensions,
5235 scroll_pixel_position: gpui::Point<Pixels>,
5236 gutter_hitbox: &Hitbox,
5237 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
5238 cx: &mut WindowContext,
5239) -> AnyElement {
5240 let mut button = button.into_any_element();
5241 let available_space = size(
5242 AvailableSpace::MinContent,
5243 AvailableSpace::Definite(line_height),
5244 );
5245 let indicator_size = button.layout_as_root(available_space, cx);
5246
5247 let blame_width = gutter_dimensions.git_blame_entries_width;
5248 let gutter_width = rows_with_hunk_bounds
5249 .get(&row)
5250 .map(|bounds| bounds.size.width);
5251 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
5252
5253 let mut x = left_offset;
5254 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
5255 - indicator_size.width
5256 - left_offset;
5257 x += available_width / 2.;
5258
5259 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
5260 y += (line_height - indicator_size.height) / 2.;
5261
5262 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
5263 button
5264}
5265
5266fn render_inline_blame_entry(
5267 blame: &gpui::Model<GitBlame>,
5268 blame_entry: BlameEntry,
5269 style: &EditorStyle,
5270 workspace: Option<WeakView<Workspace>>,
5271 cx: &mut WindowContext,
5272) -> AnyElement {
5273 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
5274
5275 let author = blame_entry.author.as_deref().unwrap_or_default();
5276 let summary_enabled = ProjectSettings::get_global(cx)
5277 .git
5278 .show_inline_commit_summary();
5279
5280 let text = match blame_entry.summary.as_ref() {
5281 Some(summary) if summary_enabled => {
5282 format!("{}, {} - {}", author, relative_timestamp, summary)
5283 }
5284 _ => format!("{}, {}", author, relative_timestamp),
5285 };
5286
5287 let details = blame.read(cx).details_for_entry(&blame_entry);
5288
5289 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
5290
5291 h_flex()
5292 .id("inline-blame")
5293 .w_full()
5294 .font_family(style.text.font().family)
5295 .text_color(cx.theme().status().hint)
5296 .line_height(style.text.line_height)
5297 .child(Icon::new(IconName::FileGit).color(Color::Hint))
5298 .child(text)
5299 .gap_2()
5300 .hoverable_tooltip(move |_| tooltip.clone().into())
5301 .into_any()
5302}
5303
5304fn render_blame_entry(
5305 ix: usize,
5306 blame: &gpui::Model<GitBlame>,
5307 blame_entry: BlameEntry,
5308 style: &EditorStyle,
5309 last_used_color: &mut Option<(PlayerColor, Oid)>,
5310 editor: View<Editor>,
5311 cx: &mut WindowContext,
5312) -> AnyElement {
5313 let mut sha_color = cx
5314 .theme()
5315 .players()
5316 .color_for_participant(blame_entry.sha.into());
5317 // If the last color we used is the same as the one we get for this line, but
5318 // the commit SHAs are different, then we try again to get a different color.
5319 match *last_used_color {
5320 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
5321 let index: u32 = blame_entry.sha.into();
5322 sha_color = cx.theme().players().color_for_participant(index + 1);
5323 }
5324 _ => {}
5325 };
5326 last_used_color.replace((sha_color, blame_entry.sha));
5327
5328 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
5329
5330 let short_commit_id = blame_entry.sha.display_short();
5331
5332 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
5333 let name = util::truncate_and_trailoff(author_name, GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED);
5334
5335 let details = blame.read(cx).details_for_entry(&blame_entry);
5336
5337 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
5338
5339 let tooltip = cx.new_view(|_| {
5340 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
5341 });
5342
5343 h_flex()
5344 .w_full()
5345 .justify_between()
5346 .font_family(style.text.font().family)
5347 .line_height(style.text.line_height)
5348 .id(("blame", ix))
5349 .text_color(cx.theme().status().hint)
5350 .pr_2()
5351 .gap_2()
5352 .child(
5353 h_flex()
5354 .items_center()
5355 .gap_2()
5356 .child(div().text_color(sha_color.cursor).child(short_commit_id))
5357 .child(name),
5358 )
5359 .child(relative_timestamp)
5360 .on_mouse_down(MouseButton::Right, {
5361 let blame_entry = blame_entry.clone();
5362 let details = details.clone();
5363 move |event, cx| {
5364 deploy_blame_entry_context_menu(
5365 &blame_entry,
5366 details.as_ref(),
5367 editor.clone(),
5368 event.position,
5369 cx,
5370 );
5371 }
5372 })
5373 .hover(|style| style.bg(cx.theme().colors().element_hover))
5374 .when_some(
5375 details.and_then(|details| details.permalink),
5376 |this, url| {
5377 let url = url.clone();
5378 this.cursor_pointer().on_click(move |_, cx| {
5379 cx.stop_propagation();
5380 cx.open_url(url.as_str())
5381 })
5382 },
5383 )
5384 .hoverable_tooltip(move |_| tooltip.clone().into())
5385 .into_any()
5386}
5387
5388fn deploy_blame_entry_context_menu(
5389 blame_entry: &BlameEntry,
5390 details: Option<&CommitDetails>,
5391 editor: View<Editor>,
5392 position: gpui::Point<Pixels>,
5393 cx: &mut WindowContext,
5394) {
5395 let context_menu = ContextMenu::build(cx, move |menu, _| {
5396 let sha = format!("{}", blame_entry.sha);
5397 menu.on_blur_subscription(Subscription::new(|| {}))
5398 .entry("Copy commit SHA", None, move |cx| {
5399 cx.write_to_clipboard(ClipboardItem::new_string(sha.clone()));
5400 })
5401 .when_some(
5402 details.and_then(|details| details.permalink.clone()),
5403 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
5404 )
5405 });
5406
5407 editor.update(cx, move |editor, cx| {
5408 editor.mouse_context_menu = Some(MouseContextMenu::new(
5409 MenuPosition::PinnedToScreen(position),
5410 context_menu,
5411 cx,
5412 ));
5413 cx.notify();
5414 });
5415}
5416
5417#[derive(Debug)]
5418pub(crate) struct LineWithInvisibles {
5419 fragments: SmallVec<[LineFragment; 1]>,
5420 invisibles: Vec<Invisible>,
5421 len: usize,
5422 width: Pixels,
5423 font_size: Pixels,
5424}
5425
5426#[allow(clippy::large_enum_variant)]
5427enum LineFragment {
5428 Text(ShapedLine),
5429 Element {
5430 element: Option<AnyElement>,
5431 size: Size<Pixels>,
5432 len: usize,
5433 },
5434}
5435
5436impl fmt::Debug for LineFragment {
5437 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
5438 match self {
5439 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
5440 LineFragment::Element { size, len, .. } => f
5441 .debug_struct("Element")
5442 .field("size", size)
5443 .field("len", len)
5444 .finish(),
5445 }
5446 }
5447}
5448
5449impl LineWithInvisibles {
5450 #[allow(clippy::too_many_arguments)]
5451 fn from_chunks<'a>(
5452 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
5453 editor_style: &EditorStyle,
5454 max_line_len: usize,
5455 max_line_count: usize,
5456 editor_mode: EditorMode,
5457 text_width: Pixels,
5458 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
5459 cx: &mut WindowContext,
5460 ) -> Vec<Self> {
5461 let text_style = &editor_style.text;
5462 let mut layouts = Vec::with_capacity(max_line_count);
5463 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
5464 let mut line = String::new();
5465 let mut invisibles = Vec::new();
5466 let mut width = Pixels::ZERO;
5467 let mut len = 0;
5468 let mut styles = Vec::new();
5469 let mut non_whitespace_added = false;
5470 let mut row = 0;
5471 let mut line_exceeded_max_len = false;
5472 let font_size = text_style.font_size.to_pixels(cx.rem_size());
5473
5474 let ellipsis = SharedString::from("⋯");
5475
5476 for highlighted_chunk in chunks.chain([HighlightedChunk {
5477 text: "\n",
5478 style: None,
5479 is_tab: false,
5480 replacement: None,
5481 }]) {
5482 if let Some(replacement) = highlighted_chunk.replacement {
5483 if !line.is_empty() {
5484 let shaped_line = cx
5485 .text_system()
5486 .shape_line(line.clone().into(), font_size, &styles)
5487 .unwrap();
5488 width += shaped_line.width;
5489 len += shaped_line.len;
5490 fragments.push(LineFragment::Text(shaped_line));
5491 line.clear();
5492 styles.clear();
5493 }
5494
5495 match replacement {
5496 ChunkReplacement::Renderer(renderer) => {
5497 let available_width = if renderer.constrain_width {
5498 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
5499 ellipsis.clone()
5500 } else {
5501 SharedString::from(Arc::from(highlighted_chunk.text))
5502 };
5503 let shaped_line = cx
5504 .text_system()
5505 .shape_line(
5506 chunk,
5507 font_size,
5508 &[text_style.to_run(highlighted_chunk.text.len())],
5509 )
5510 .unwrap();
5511 AvailableSpace::Definite(shaped_line.width)
5512 } else {
5513 AvailableSpace::MinContent
5514 };
5515
5516 let mut element = (renderer.render)(&mut ChunkRendererContext {
5517 context: cx,
5518 max_width: text_width,
5519 });
5520 let line_height = text_style.line_height_in_pixels(cx.rem_size());
5521 let size = element.layout_as_root(
5522 size(available_width, AvailableSpace::Definite(line_height)),
5523 cx,
5524 );
5525
5526 width += size.width;
5527 len += highlighted_chunk.text.len();
5528 fragments.push(LineFragment::Element {
5529 element: Some(element),
5530 size,
5531 len: highlighted_chunk.text.len(),
5532 });
5533 }
5534 ChunkReplacement::Str(x) => {
5535 let text_style = if let Some(style) = highlighted_chunk.style {
5536 Cow::Owned(text_style.clone().highlight(style))
5537 } else {
5538 Cow::Borrowed(text_style)
5539 };
5540
5541 let run = TextRun {
5542 len: x.len(),
5543 font: text_style.font(),
5544 color: text_style.color,
5545 background_color: text_style.background_color,
5546 underline: text_style.underline,
5547 strikethrough: text_style.strikethrough,
5548 };
5549 let line_layout = cx
5550 .text_system()
5551 .shape_line(x, font_size, &[run])
5552 .unwrap()
5553 .with_len(highlighted_chunk.text.len());
5554
5555 width += line_layout.width;
5556 len += highlighted_chunk.text.len();
5557 fragments.push(LineFragment::Text(line_layout))
5558 }
5559 }
5560 } else {
5561 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
5562 if ix > 0 {
5563 let shaped_line = cx
5564 .text_system()
5565 .shape_line(line.clone().into(), font_size, &styles)
5566 .unwrap();
5567 width += shaped_line.width;
5568 len += shaped_line.len;
5569 fragments.push(LineFragment::Text(shaped_line));
5570 layouts.push(Self {
5571 width: mem::take(&mut width),
5572 len: mem::take(&mut len),
5573 fragments: mem::take(&mut fragments),
5574 invisibles: std::mem::take(&mut invisibles),
5575 font_size,
5576 });
5577
5578 line.clear();
5579 styles.clear();
5580 row += 1;
5581 line_exceeded_max_len = false;
5582 non_whitespace_added = false;
5583 if row == max_line_count {
5584 return layouts;
5585 }
5586 }
5587
5588 if !line_chunk.is_empty() && !line_exceeded_max_len {
5589 let text_style = if let Some(style) = highlighted_chunk.style {
5590 Cow::Owned(text_style.clone().highlight(style))
5591 } else {
5592 Cow::Borrowed(text_style)
5593 };
5594
5595 if line.len() + line_chunk.len() > max_line_len {
5596 let mut chunk_len = max_line_len - line.len();
5597 while !line_chunk.is_char_boundary(chunk_len) {
5598 chunk_len -= 1;
5599 }
5600 line_chunk = &line_chunk[..chunk_len];
5601 line_exceeded_max_len = true;
5602 }
5603
5604 styles.push(TextRun {
5605 len: line_chunk.len(),
5606 font: text_style.font(),
5607 color: text_style.color,
5608 background_color: text_style.background_color,
5609 underline: text_style.underline,
5610 strikethrough: text_style.strikethrough,
5611 });
5612
5613 if editor_mode == EditorMode::Full {
5614 // Line wrap pads its contents with fake whitespaces,
5615 // avoid printing them
5616 let is_soft_wrapped = is_row_soft_wrapped(row);
5617 if highlighted_chunk.is_tab {
5618 if non_whitespace_added || !is_soft_wrapped {
5619 invisibles.push(Invisible::Tab {
5620 line_start_offset: line.len(),
5621 line_end_offset: line.len() + line_chunk.len(),
5622 });
5623 }
5624 } else {
5625 invisibles.extend(line_chunk.char_indices().filter_map(
5626 |(index, c)| {
5627 let is_whitespace = c.is_whitespace();
5628 non_whitespace_added |= !is_whitespace;
5629 if is_whitespace
5630 && (non_whitespace_added || !is_soft_wrapped)
5631 {
5632 Some(Invisible::Whitespace {
5633 line_offset: line.len() + index,
5634 })
5635 } else {
5636 None
5637 }
5638 },
5639 ))
5640 }
5641 }
5642
5643 line.push_str(line_chunk);
5644 }
5645 }
5646 }
5647 }
5648
5649 layouts
5650 }
5651
5652 fn prepaint(
5653 &mut self,
5654 line_height: Pixels,
5655 scroll_pixel_position: gpui::Point<Pixels>,
5656 row: DisplayRow,
5657 content_origin: gpui::Point<Pixels>,
5658 line_elements: &mut SmallVec<[AnyElement; 1]>,
5659 cx: &mut WindowContext,
5660 ) {
5661 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
5662 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
5663 for fragment in &mut self.fragments {
5664 match fragment {
5665 LineFragment::Text(line) => {
5666 fragment_origin.x += line.width;
5667 }
5668 LineFragment::Element { element, size, .. } => {
5669 let mut element = element
5670 .take()
5671 .expect("you can't prepaint LineWithInvisibles twice");
5672
5673 // Center the element vertically within the line.
5674 let mut element_origin = fragment_origin;
5675 element_origin.y += (line_height - size.height) / 2.;
5676 element.prepaint_at(element_origin, cx);
5677 line_elements.push(element);
5678
5679 fragment_origin.x += size.width;
5680 }
5681 }
5682 }
5683 }
5684
5685 fn draw(
5686 &self,
5687 layout: &EditorLayout,
5688 row: DisplayRow,
5689 content_origin: gpui::Point<Pixels>,
5690 whitespace_setting: ShowWhitespaceSetting,
5691 selection_ranges: &[Range<DisplayPoint>],
5692 cx: &mut WindowContext,
5693 ) {
5694 let line_height = layout.position_map.line_height;
5695 let line_y = line_height
5696 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
5697
5698 let mut fragment_origin =
5699 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
5700
5701 for fragment in &self.fragments {
5702 match fragment {
5703 LineFragment::Text(line) => {
5704 line.paint(fragment_origin, line_height, cx).log_err();
5705 fragment_origin.x += line.width;
5706 }
5707 LineFragment::Element { size, .. } => {
5708 fragment_origin.x += size.width;
5709 }
5710 }
5711 }
5712
5713 self.draw_invisibles(
5714 selection_ranges,
5715 layout,
5716 content_origin,
5717 line_y,
5718 row,
5719 line_height,
5720 whitespace_setting,
5721 cx,
5722 );
5723 }
5724
5725 #[allow(clippy::too_many_arguments)]
5726 fn draw_invisibles(
5727 &self,
5728 selection_ranges: &[Range<DisplayPoint>],
5729 layout: &EditorLayout,
5730 content_origin: gpui::Point<Pixels>,
5731 line_y: Pixels,
5732 row: DisplayRow,
5733 line_height: Pixels,
5734 whitespace_setting: ShowWhitespaceSetting,
5735 cx: &mut WindowContext,
5736 ) {
5737 let extract_whitespace_info = |invisible: &Invisible| {
5738 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
5739 Invisible::Tab {
5740 line_start_offset,
5741 line_end_offset,
5742 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
5743 Invisible::Whitespace { line_offset } => {
5744 (*line_offset, line_offset + 1, &layout.space_invisible)
5745 }
5746 };
5747
5748 let x_offset = self.x_for_index(token_offset);
5749 let invisible_offset =
5750 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
5751 let origin = content_origin
5752 + gpui::point(
5753 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
5754 line_y,
5755 );
5756
5757 (
5758 [token_offset, token_end_offset],
5759 Box::new(move |cx: &mut WindowContext| {
5760 invisible_symbol.paint(origin, line_height, cx).log_err();
5761 }),
5762 )
5763 };
5764
5765 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
5766 match whitespace_setting {
5767 ShowWhitespaceSetting::None => (),
5768 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
5769 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
5770 let invisible_point = DisplayPoint::new(row, start as u32);
5771 if !selection_ranges
5772 .iter()
5773 .any(|region| region.start <= invisible_point && invisible_point < region.end)
5774 {
5775 return;
5776 }
5777
5778 paint(cx);
5779 }),
5780
5781 // For a whitespace to be on a boundary, any of the following conditions need to be met:
5782 // - It is a tab
5783 // - It is adjacent to an edge (start or end)
5784 // - It is adjacent to a whitespace (left or right)
5785 ShowWhitespaceSetting::Boundary => {
5786 // 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
5787 // the above cases.
5788 // Note: We zip in the original `invisibles` to check for tab equality
5789 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
5790 for (([start, end], paint), invisible) in
5791 invisible_iter.zip_eq(self.invisibles.iter())
5792 {
5793 let should_render = match (&last_seen, invisible) {
5794 (_, Invisible::Tab { .. }) => true,
5795 (Some((_, last_end, _)), _) => *last_end == start,
5796 _ => false,
5797 };
5798
5799 if should_render || start == 0 || end == self.len {
5800 paint(cx);
5801
5802 // Since we are scanning from the left, we will skip over the first available whitespace that is part
5803 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
5804 if let Some((should_render_last, last_end, paint_last)) = last_seen {
5805 // Note that we need to make sure that the last one is actually adjacent
5806 if !should_render_last && last_end == start {
5807 paint_last(cx);
5808 }
5809 }
5810 }
5811
5812 // Manually render anything within a selection
5813 let invisible_point = DisplayPoint::new(row, start as u32);
5814 if selection_ranges.iter().any(|region| {
5815 region.start <= invisible_point && invisible_point < region.end
5816 }) {
5817 paint(cx);
5818 }
5819
5820 last_seen = Some((should_render, end, paint));
5821 }
5822 }
5823 }
5824 }
5825
5826 pub fn x_for_index(&self, index: usize) -> Pixels {
5827 let mut fragment_start_x = Pixels::ZERO;
5828 let mut fragment_start_index = 0;
5829
5830 for fragment in &self.fragments {
5831 match fragment {
5832 LineFragment::Text(shaped_line) => {
5833 let fragment_end_index = fragment_start_index + shaped_line.len;
5834 if index < fragment_end_index {
5835 return fragment_start_x
5836 + shaped_line.x_for_index(index - fragment_start_index);
5837 }
5838 fragment_start_x += shaped_line.width;
5839 fragment_start_index = fragment_end_index;
5840 }
5841 LineFragment::Element { len, size, .. } => {
5842 let fragment_end_index = fragment_start_index + len;
5843 if index < fragment_end_index {
5844 return fragment_start_x;
5845 }
5846 fragment_start_x += size.width;
5847 fragment_start_index = fragment_end_index;
5848 }
5849 }
5850 }
5851
5852 fragment_start_x
5853 }
5854
5855 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
5856 let mut fragment_start_x = Pixels::ZERO;
5857 let mut fragment_start_index = 0;
5858
5859 for fragment in &self.fragments {
5860 match fragment {
5861 LineFragment::Text(shaped_line) => {
5862 let fragment_end_x = fragment_start_x + shaped_line.width;
5863 if x < fragment_end_x {
5864 return Some(
5865 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
5866 );
5867 }
5868 fragment_start_x = fragment_end_x;
5869 fragment_start_index += shaped_line.len;
5870 }
5871 LineFragment::Element { len, size, .. } => {
5872 let fragment_end_x = fragment_start_x + size.width;
5873 if x < fragment_end_x {
5874 return Some(fragment_start_index);
5875 }
5876 fragment_start_index += len;
5877 fragment_start_x = fragment_end_x;
5878 }
5879 }
5880 }
5881
5882 None
5883 }
5884
5885 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
5886 let mut fragment_start_index = 0;
5887
5888 for fragment in &self.fragments {
5889 match fragment {
5890 LineFragment::Text(shaped_line) => {
5891 let fragment_end_index = fragment_start_index + shaped_line.len;
5892 if index < fragment_end_index {
5893 return shaped_line.font_id_for_index(index - fragment_start_index);
5894 }
5895 fragment_start_index = fragment_end_index;
5896 }
5897 LineFragment::Element { len, .. } => {
5898 let fragment_end_index = fragment_start_index + len;
5899 if index < fragment_end_index {
5900 return None;
5901 }
5902 fragment_start_index = fragment_end_index;
5903 }
5904 }
5905 }
5906
5907 None
5908 }
5909}
5910
5911#[derive(Debug, Clone, Copy, PartialEq, Eq)]
5912enum Invisible {
5913 /// A tab character
5914 ///
5915 /// A tab character is internally represented by spaces (configured by the user's tab width)
5916 /// aligned to the nearest column, so it's necessary to store the start and end offset for
5917 /// adjacency checks.
5918 Tab {
5919 line_start_offset: usize,
5920 line_end_offset: usize,
5921 },
5922 Whitespace {
5923 line_offset: usize,
5924 },
5925}
5926
5927impl EditorElement {
5928 /// Returns the rem size to use when rendering the [`EditorElement`].
5929 ///
5930 /// This allows UI elements to scale based on the `buffer_font_size`.
5931 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
5932 match self.editor.read(cx).mode {
5933 EditorMode::Full => {
5934 let buffer_font_size = self.style.text.font_size;
5935 match buffer_font_size {
5936 AbsoluteLength::Pixels(pixels) => {
5937 let rem_size_scale = {
5938 // Our default UI font size is 14px on a 16px base scale.
5939 // This means the default UI font size is 0.875rems.
5940 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
5941
5942 // We then determine the delta between a single rem and the default font
5943 // size scale.
5944 let default_font_size_delta = 1. - default_font_size_scale;
5945
5946 // Finally, we add this delta to 1rem to get the scale factor that
5947 // should be used to scale up the UI.
5948 1. + default_font_size_delta
5949 };
5950
5951 Some(pixels * rem_size_scale)
5952 }
5953 AbsoluteLength::Rems(rems) => {
5954 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
5955 }
5956 }
5957 }
5958 // We currently use single-line and auto-height editors in UI contexts,
5959 // so we don't want to scale everything with the buffer font size, as it
5960 // ends up looking off.
5961 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
5962 }
5963 }
5964}
5965
5966impl Element for EditorElement {
5967 type RequestLayoutState = ();
5968 type PrepaintState = EditorLayout;
5969
5970 fn id(&self) -> Option<ElementId> {
5971 None
5972 }
5973
5974 fn request_layout(
5975 &mut self,
5976 _: Option<&GlobalElementId>,
5977 cx: &mut WindowContext,
5978 ) -> (gpui::LayoutId, ()) {
5979 let rem_size = self.rem_size(cx);
5980 cx.with_rem_size(rem_size, |cx| {
5981 self.editor.update(cx, |editor, cx| {
5982 editor.set_style(self.style.clone(), cx);
5983
5984 let layout_id = match editor.mode {
5985 EditorMode::SingleLine { auto_width } => {
5986 let rem_size = cx.rem_size();
5987
5988 let height = self.style.text.line_height_in_pixels(rem_size);
5989 if auto_width {
5990 let editor_handle = cx.view().clone();
5991 let style = self.style.clone();
5992 cx.request_measured_layout(Style::default(), move |_, _, cx| {
5993 let editor_snapshot =
5994 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
5995 let line = Self::layout_lines(
5996 DisplayRow(0)..DisplayRow(1),
5997 &editor_snapshot,
5998 &style,
5999 px(f32::MAX),
6000 |_| false, // Single lines never soft wrap
6001 cx,
6002 )
6003 .pop()
6004 .unwrap();
6005
6006 let font_id = cx.text_system().resolve_font(&style.text.font());
6007 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6008 let em_width = cx
6009 .text_system()
6010 .typographic_bounds(font_id, font_size, 'm')
6011 .unwrap()
6012 .size
6013 .width;
6014
6015 size(line.width + em_width, height)
6016 })
6017 } else {
6018 let mut style = Style::default();
6019 style.size.height = height.into();
6020 style.size.width = relative(1.).into();
6021 cx.request_layout(style, None)
6022 }
6023 }
6024 EditorMode::AutoHeight { max_lines } => {
6025 let editor_handle = cx.view().clone();
6026 let max_line_number_width =
6027 self.max_line_number_width(&editor.snapshot(cx), cx);
6028 cx.request_measured_layout(
6029 Style::default(),
6030 move |known_dimensions, available_space, cx| {
6031 editor_handle
6032 .update(cx, |editor, cx| {
6033 compute_auto_height_layout(
6034 editor,
6035 max_lines,
6036 max_line_number_width,
6037 known_dimensions,
6038 available_space.width,
6039 cx,
6040 )
6041 })
6042 .unwrap_or_default()
6043 },
6044 )
6045 }
6046 EditorMode::Full => {
6047 let mut style = Style::default();
6048 style.size.width = relative(1.).into();
6049 style.size.height = relative(1.).into();
6050 cx.request_layout(style, None)
6051 }
6052 };
6053
6054 (layout_id, ())
6055 })
6056 })
6057 }
6058
6059 fn prepaint(
6060 &mut self,
6061 _: Option<&GlobalElementId>,
6062 bounds: Bounds<Pixels>,
6063 _: &mut Self::RequestLayoutState,
6064 cx: &mut WindowContext,
6065 ) -> Self::PrepaintState {
6066 let text_style = TextStyleRefinement {
6067 font_size: Some(self.style.text.font_size),
6068 line_height: Some(self.style.text.line_height),
6069 ..Default::default()
6070 };
6071 let focus_handle = self.editor.focus_handle(cx);
6072 cx.set_view_id(self.editor.entity_id());
6073 cx.set_focus_handle(&focus_handle);
6074
6075 let rem_size = self.rem_size(cx);
6076 cx.with_rem_size(rem_size, |cx| {
6077 cx.with_text_style(Some(text_style), |cx| {
6078 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
6079 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
6080 let style = self.style.clone();
6081
6082 let font_id = cx.text_system().resolve_font(&style.text.font());
6083 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6084 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6085 let em_width = cx
6086 .text_system()
6087 .typographic_bounds(font_id, font_size, 'm')
6088 .unwrap()
6089 .size
6090 .width;
6091 let em_advance = cx
6092 .text_system()
6093 .advance(font_id, font_size, 'm')
6094 .unwrap()
6095 .width;
6096
6097 let letter_size = size(em_width, line_height);
6098
6099 let gutter_dimensions = snapshot.gutter_dimensions(
6100 font_id,
6101 font_size,
6102 em_width,
6103 em_advance,
6104 self.max_line_number_width(&snapshot, cx),
6105 cx,
6106 );
6107 let text_width = bounds.size.width - gutter_dimensions.width;
6108
6109 let editor_width = text_width - gutter_dimensions.margin - em_width;
6110
6111 snapshot = self.editor.update(cx, |editor, cx| {
6112 editor.last_bounds = Some(bounds);
6113 editor.gutter_dimensions = gutter_dimensions;
6114 editor.set_visible_line_count(bounds.size.height / line_height, cx);
6115
6116 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
6117 snapshot
6118 } else {
6119 let wrap_width = match editor.soft_wrap_mode(cx) {
6120 SoftWrap::GitDiff => None,
6121 SoftWrap::None => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
6122 SoftWrap::EditorWidth => Some(editor_width),
6123 SoftWrap::Column(column) => Some(column as f32 * em_advance),
6124 SoftWrap::Bounded(column) => {
6125 Some(editor_width.min(column as f32 * em_advance))
6126 }
6127 };
6128
6129 if editor.set_wrap_width(wrap_width, cx) {
6130 editor.snapshot(cx)
6131 } else {
6132 snapshot
6133 }
6134 }
6135 });
6136
6137 let wrap_guides = self
6138 .editor
6139 .read(cx)
6140 .wrap_guides(cx)
6141 .iter()
6142 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
6143 .collect::<SmallVec<[_; 2]>>();
6144
6145 let hitbox = cx.insert_hitbox(bounds, false);
6146 let gutter_hitbox =
6147 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
6148 let text_hitbox = cx.insert_hitbox(
6149 Bounds {
6150 origin: gutter_hitbox.top_right(),
6151 size: size(text_width, bounds.size.height),
6152 },
6153 false,
6154 );
6155 // Offset the content_bounds from the text_bounds by the gutter margin (which
6156 // is roughly half a character wide) to make hit testing work more like how we want.
6157 let content_origin =
6158 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
6159
6160 let scrollbar_bounds =
6161 Bounds::from_corners(content_origin, bounds.bottom_right());
6162
6163 let height_in_lines = scrollbar_bounds.size.height / line_height;
6164
6165 // NOTE: The max row number in the current file, minus one
6166 let max_row = snapshot.max_point().row().as_f32();
6167
6168 // NOTE: The max scroll position for the top of the window
6169 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
6170 (max_row - height_in_lines + 1.).max(0.)
6171 } else {
6172 let settings = EditorSettings::get_global(cx);
6173 match settings.scroll_beyond_last_line {
6174 ScrollBeyondLastLine::OnePage => max_row,
6175 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
6176 ScrollBeyondLastLine::VerticalScrollMargin => {
6177 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
6178 .max(0.)
6179 }
6180 }
6181 };
6182
6183 // TODO: Autoscrolling for both axes
6184 let mut autoscroll_request = None;
6185 let mut autoscroll_containing_element = false;
6186 let mut autoscroll_horizontally = false;
6187 self.editor.update(cx, |editor, cx| {
6188 autoscroll_request = editor.autoscroll_request();
6189 autoscroll_containing_element =
6190 autoscroll_request.is_some() || editor.has_pending_selection();
6191 // TODO: Is this horizontal or vertical?!
6192 autoscroll_horizontally =
6193 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
6194 snapshot = editor.snapshot(cx);
6195 });
6196
6197 let mut scroll_position = snapshot.scroll_position();
6198 // The scroll position is a fractional point, the whole number of which represents
6199 // the top of the window in terms of display rows.
6200 let start_row = DisplayRow(scroll_position.y as u32);
6201 let max_row = snapshot.max_point().row();
6202 let end_row = cmp::min(
6203 (scroll_position.y + height_in_lines).ceil() as u32,
6204 max_row.next_row().0,
6205 );
6206 let end_row = DisplayRow(end_row);
6207
6208 let buffer_rows = snapshot
6209 .buffer_rows(start_row)
6210 .take((start_row..end_row).len())
6211 .collect::<Vec<_>>();
6212 let is_row_soft_wrapped =
6213 |row| buffer_rows.get(row).copied().flatten().is_none();
6214
6215 let start_anchor = if start_row == Default::default() {
6216 Anchor::min()
6217 } else {
6218 snapshot.buffer_snapshot.anchor_before(
6219 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
6220 )
6221 };
6222 let end_anchor = if end_row > max_row {
6223 Anchor::max()
6224 } else {
6225 snapshot.buffer_snapshot.anchor_before(
6226 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
6227 )
6228 };
6229
6230 let highlighted_rows = self
6231 .editor
6232 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
6233 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
6234 start_anchor..end_anchor,
6235 &snapshot.display_snapshot,
6236 cx.theme().colors(),
6237 );
6238 let highlighted_gutter_ranges =
6239 self.editor.read(cx).gutter_highlights_in_range(
6240 start_anchor..end_anchor,
6241 &snapshot.display_snapshot,
6242 cx,
6243 );
6244
6245 let redacted_ranges = self.editor.read(cx).redacted_ranges(
6246 start_anchor..end_anchor,
6247 &snapshot.display_snapshot,
6248 cx,
6249 );
6250
6251 let (local_selections, selected_buffer_ids): (
6252 Vec<Selection<Point>>,
6253 Vec<BufferId>,
6254 ) = self.editor.update(cx, |editor, cx| {
6255 let all_selections = editor.selections.all::<Point>(cx);
6256 let selected_buffer_ids = if editor.is_singleton(cx) {
6257 Vec::new()
6258 } else {
6259 let mut selected_buffer_ids = Vec::with_capacity(all_selections.len());
6260
6261 for selection in all_selections {
6262 for buffer_id in snapshot
6263 .buffer_snapshot
6264 .buffer_ids_in_selected_rows(selection)
6265 {
6266 if selected_buffer_ids.last() != Some(&buffer_id) {
6267 selected_buffer_ids.push(buffer_id);
6268 }
6269 }
6270 }
6271
6272 selected_buffer_ids
6273 };
6274
6275 let mut selections = editor
6276 .selections
6277 .disjoint_in_range(start_anchor..end_anchor, cx);
6278 selections.extend(editor.selections.pending(cx));
6279
6280 (selections, selected_buffer_ids)
6281 });
6282
6283 let (selections, active_rows, newest_selection_head) = self.layout_selections(
6284 start_anchor,
6285 end_anchor,
6286 &local_selections,
6287 &snapshot,
6288 start_row,
6289 end_row,
6290 cx,
6291 );
6292
6293 let line_numbers = self.layout_line_numbers(
6294 Some(&gutter_hitbox),
6295 gutter_dimensions,
6296 line_height,
6297 scroll_position,
6298 start_row..end_row,
6299 buffer_rows.iter().copied(),
6300 newest_selection_head,
6301 &snapshot,
6302 cx,
6303 );
6304
6305 let mut crease_toggles = cx.with_element_namespace("crease_toggles", |cx| {
6306 self.layout_crease_toggles(
6307 start_row..end_row,
6308 buffer_rows.iter().copied(),
6309 &active_rows,
6310 &snapshot,
6311 cx,
6312 )
6313 });
6314 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
6315 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
6316 });
6317
6318 let display_hunks = self.layout_gutter_git_hunks(
6319 line_height,
6320 &gutter_hitbox,
6321 start_row..end_row,
6322 start_anchor..end_anchor,
6323 &snapshot,
6324 cx,
6325 );
6326
6327 let mut max_visible_line_width = Pixels::ZERO;
6328 let mut line_layouts = Self::layout_lines(
6329 start_row..end_row,
6330 &snapshot,
6331 &self.style,
6332 editor_width,
6333 is_row_soft_wrapped,
6334 cx,
6335 );
6336 for line_with_invisibles in &line_layouts {
6337 if line_with_invisibles.width > max_visible_line_width {
6338 max_visible_line_width = line_with_invisibles.width;
6339 }
6340 }
6341
6342 let longest_line_width = layout_line(
6343 snapshot.longest_row(),
6344 &snapshot,
6345 &style,
6346 editor_width,
6347 is_row_soft_wrapped,
6348 cx,
6349 )
6350 .width;
6351
6352 let scrollbar_range_data = ScrollbarRangeData::new(
6353 scrollbar_bounds,
6354 letter_size,
6355 &snapshot,
6356 longest_line_width,
6357 &style,
6358 cx,
6359 );
6360
6361 let scroll_range_bounds = scrollbar_range_data.scroll_range;
6362 let mut scroll_width = scroll_range_bounds.size.width;
6363
6364 let sticky_header_excerpt = if snapshot.buffer_snapshot.show_headers() {
6365 snapshot.sticky_header_excerpt(start_row)
6366 } else {
6367 None
6368 };
6369 let sticky_header_excerpt_id =
6370 sticky_header_excerpt.as_ref().map(|top| top.excerpt.id);
6371
6372 let blocks = cx.with_element_namespace("blocks", |cx| {
6373 self.render_blocks(
6374 start_row..end_row,
6375 &snapshot,
6376 &hitbox,
6377 &text_hitbox,
6378 editor_width,
6379 &mut scroll_width,
6380 &gutter_dimensions,
6381 em_width,
6382 gutter_dimensions.full_width(),
6383 line_height,
6384 &line_layouts,
6385 &local_selections,
6386 &selected_buffer_ids,
6387 is_row_soft_wrapped,
6388 sticky_header_excerpt_id,
6389 cx,
6390 )
6391 });
6392 let mut blocks = match blocks {
6393 Ok(blocks) => blocks,
6394 Err(resized_blocks) => {
6395 self.editor.update(cx, |editor, cx| {
6396 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
6397 });
6398 return self.prepaint(None, bounds, &mut (), cx);
6399 }
6400 };
6401
6402 let sticky_buffer_header = sticky_header_excerpt.map(|sticky_header_excerpt| {
6403 cx.with_element_namespace("blocks", |cx| {
6404 self.layout_sticky_buffer_header(
6405 sticky_header_excerpt,
6406 scroll_position.y,
6407 line_height,
6408 &snapshot,
6409 &hitbox,
6410 &selected_buffer_ids,
6411 cx,
6412 )
6413 })
6414 });
6415
6416 let start_buffer_row =
6417 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
6418 let end_buffer_row =
6419 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
6420
6421 let scroll_max = point(
6422 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
6423 max_row.as_f32(),
6424 );
6425
6426 self.editor.update(cx, |editor, cx| {
6427 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
6428
6429 let autoscrolled = if autoscroll_horizontally {
6430 editor.autoscroll_horizontally(
6431 start_row,
6432 text_hitbox.size.width,
6433 scroll_width,
6434 em_width,
6435 &line_layouts,
6436 cx,
6437 )
6438 } else {
6439 false
6440 };
6441
6442 if clamped || autoscrolled {
6443 snapshot = editor.snapshot(cx);
6444 scroll_position = snapshot.scroll_position();
6445 }
6446 });
6447
6448 let scroll_pixel_position = point(
6449 scroll_position.x * em_width,
6450 scroll_position.y * line_height,
6451 );
6452
6453 let indent_guides = self.layout_indent_guides(
6454 content_origin,
6455 text_hitbox.origin,
6456 start_buffer_row..end_buffer_row,
6457 scroll_pixel_position,
6458 line_height,
6459 &snapshot,
6460 cx,
6461 );
6462
6463 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
6464 self.prepaint_crease_trailers(
6465 crease_trailers,
6466 &line_layouts,
6467 line_height,
6468 content_origin,
6469 scroll_pixel_position,
6470 em_width,
6471 cx,
6472 )
6473 });
6474
6475 let mut inline_blame = None;
6476 if let Some(newest_selection_head) = newest_selection_head {
6477 let display_row = newest_selection_head.row();
6478 if (start_row..end_row).contains(&display_row) {
6479 let line_ix = display_row.minus(start_row) as usize;
6480 let line_layout = &line_layouts[line_ix];
6481 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
6482 inline_blame = self.layout_inline_blame(
6483 display_row,
6484 &snapshot.display_snapshot,
6485 line_layout,
6486 crease_trailer_layout,
6487 em_width,
6488 content_origin,
6489 scroll_pixel_position,
6490 line_height,
6491 cx,
6492 );
6493 }
6494 }
6495
6496 let blamed_display_rows = self.layout_blame_entries(
6497 buffer_rows.into_iter(),
6498 em_width,
6499 scroll_position,
6500 line_height,
6501 &gutter_hitbox,
6502 gutter_dimensions.git_blame_entries_width,
6503 cx,
6504 );
6505
6506 let scroll_max = point(
6507 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
6508 max_scroll_top,
6509 );
6510
6511 self.editor.update(cx, |editor, cx| {
6512 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
6513
6514 let autoscrolled = if autoscroll_horizontally {
6515 editor.autoscroll_horizontally(
6516 start_row,
6517 text_hitbox.size.width,
6518 scroll_width,
6519 em_width,
6520 &line_layouts,
6521 cx,
6522 )
6523 } else {
6524 false
6525 };
6526
6527 if clamped || autoscrolled {
6528 snapshot = editor.snapshot(cx);
6529 scroll_position = snapshot.scroll_position();
6530 }
6531 });
6532
6533 let line_elements = self.prepaint_lines(
6534 start_row,
6535 &mut line_layouts,
6536 line_height,
6537 scroll_pixel_position,
6538 content_origin,
6539 cx,
6540 );
6541
6542 let mut block_start_rows = HashSet::default();
6543
6544 cx.with_element_namespace("blocks", |cx| {
6545 self.layout_blocks(
6546 &mut blocks,
6547 &mut block_start_rows,
6548 &hitbox,
6549 line_height,
6550 scroll_pixel_position,
6551 cx,
6552 );
6553 });
6554
6555 let cursors = self.collect_cursors(&snapshot, cx);
6556 let visible_row_range = start_row..end_row;
6557 let non_visible_cursors = cursors
6558 .iter()
6559 .any(move |c| !visible_row_range.contains(&c.0.row()));
6560
6561 let visible_cursors = self.layout_visible_cursors(
6562 &snapshot,
6563 &selections,
6564 &block_start_rows,
6565 start_row..end_row,
6566 &line_layouts,
6567 &text_hitbox,
6568 content_origin,
6569 scroll_position,
6570 scroll_pixel_position,
6571 line_height,
6572 em_width,
6573 em_advance,
6574 autoscroll_containing_element,
6575 cx,
6576 );
6577
6578 let scrollbars_layout = self.layout_scrollbars(
6579 &snapshot,
6580 scrollbar_range_data,
6581 scroll_position,
6582 non_visible_cursors,
6583 cx,
6584 );
6585
6586 let gutter_settings = EditorSettings::get_global(cx).gutter;
6587
6588 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
6589 editor
6590 .diff_map
6591 .hunks(false)
6592 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
6593 .map(|expanded_hunk| {
6594 let start_row = expanded_hunk
6595 .hunk_range
6596 .start
6597 .to_display_point(&snapshot)
6598 .row();
6599 (start_row, expanded_hunk.clone())
6600 })
6601 .collect::<HashMap<_, _>>()
6602 });
6603
6604 let rows_with_hunk_bounds = display_hunks
6605 .iter()
6606 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
6607 .fold(
6608 HashMap::default(),
6609 |mut rows_with_hunk_bounds, (hunk, bounds)| {
6610 match hunk {
6611 DisplayDiffHunk::Folded { display_row } => {
6612 rows_with_hunk_bounds.insert(*display_row, bounds);
6613 }
6614 DisplayDiffHunk::Unfolded {
6615 display_row_range, ..
6616 } => {
6617 for display_row in display_row_range.iter_rows() {
6618 rows_with_hunk_bounds.insert(display_row, bounds);
6619 }
6620 }
6621 }
6622 rows_with_hunk_bounds
6623 },
6624 );
6625 let mut code_actions_indicator = None;
6626 if let Some(newest_selection_head) = newest_selection_head {
6627 if (start_row..end_row).contains(&newest_selection_head.row()) {
6628 self.layout_context_menu(
6629 line_height,
6630 &text_hitbox,
6631 content_origin,
6632 start_row,
6633 scroll_pixel_position,
6634 &line_layouts,
6635 newest_selection_head,
6636 gutter_dimensions.width - gutter_dimensions.left_padding,
6637 cx,
6638 );
6639
6640 let show_code_actions = snapshot
6641 .show_code_actions
6642 .unwrap_or(gutter_settings.code_actions);
6643 if show_code_actions {
6644 let newest_selection_point =
6645 newest_selection_head.to_point(&snapshot.display_snapshot);
6646 let newest_selection_display_row =
6647 newest_selection_point.to_display_point(&snapshot).row();
6648 if !expanded_add_hunks_by_rows
6649 .contains_key(&newest_selection_display_row)
6650 {
6651 if !snapshot
6652 .is_line_folded(MultiBufferRow(newest_selection_point.row))
6653 {
6654 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
6655 MultiBufferRow(newest_selection_point.row),
6656 );
6657 if let Some((buffer, range)) = buffer {
6658 let buffer_id = buffer.remote_id();
6659 let row = range.start.row;
6660 let has_test_indicator = self
6661 .editor
6662 .read(cx)
6663 .tasks
6664 .contains_key(&(buffer_id, row));
6665
6666 if !has_test_indicator {
6667 code_actions_indicator = self
6668 .layout_code_actions_indicator(
6669 line_height,
6670 newest_selection_head,
6671 scroll_pixel_position,
6672 &gutter_dimensions,
6673 &gutter_hitbox,
6674 &rows_with_hunk_bounds,
6675 cx,
6676 );
6677 }
6678 }
6679 }
6680 }
6681 }
6682 }
6683 }
6684
6685 let test_indicators = if gutter_settings.runnables {
6686 self.layout_run_indicators(
6687 line_height,
6688 start_row..end_row,
6689 scroll_pixel_position,
6690 &gutter_dimensions,
6691 &gutter_hitbox,
6692 &rows_with_hunk_bounds,
6693 &snapshot,
6694 cx,
6695 )
6696 } else {
6697 Vec::new()
6698 };
6699
6700 self.layout_signature_help(
6701 &hitbox,
6702 content_origin,
6703 scroll_pixel_position,
6704 newest_selection_head,
6705 start_row,
6706 &line_layouts,
6707 line_height,
6708 em_width,
6709 cx,
6710 );
6711
6712 if !cx.has_active_drag() {
6713 self.layout_hover_popovers(
6714 &snapshot,
6715 &hitbox,
6716 &text_hitbox,
6717 start_row..end_row,
6718 content_origin,
6719 scroll_pixel_position,
6720 &line_layouts,
6721 line_height,
6722 em_width,
6723 cx,
6724 );
6725 }
6726
6727 let inline_completion_popover = self.layout_inline_completion_popover(
6728 &text_hitbox.bounds,
6729 &snapshot,
6730 start_row..end_row,
6731 scroll_position.y,
6732 scroll_position.y + height_in_lines,
6733 &line_layouts,
6734 line_height,
6735 scroll_pixel_position,
6736 editor_width,
6737 &style,
6738 cx,
6739 );
6740
6741 let mouse_context_menu = self.layout_mouse_context_menu(
6742 &snapshot,
6743 start_row..end_row,
6744 content_origin,
6745 cx,
6746 );
6747
6748 cx.with_element_namespace("crease_toggles", |cx| {
6749 self.prepaint_crease_toggles(
6750 &mut crease_toggles,
6751 line_height,
6752 &gutter_dimensions,
6753 gutter_settings,
6754 scroll_pixel_position,
6755 &gutter_hitbox,
6756 cx,
6757 )
6758 });
6759
6760 let invisible_symbol_font_size = font_size / 2.;
6761 let tab_invisible = cx
6762 .text_system()
6763 .shape_line(
6764 "→".into(),
6765 invisible_symbol_font_size,
6766 &[TextRun {
6767 len: "→".len(),
6768 font: self.style.text.font(),
6769 color: cx.theme().colors().editor_invisible,
6770 background_color: None,
6771 underline: None,
6772 strikethrough: None,
6773 }],
6774 )
6775 .unwrap();
6776 let space_invisible = cx
6777 .text_system()
6778 .shape_line(
6779 "•".into(),
6780 invisible_symbol_font_size,
6781 &[TextRun {
6782 len: "•".len(),
6783 font: self.style.text.font(),
6784 color: cx.theme().colors().editor_invisible,
6785 background_color: None,
6786 underline: None,
6787 strikethrough: None,
6788 }],
6789 )
6790 .unwrap();
6791
6792 EditorLayout {
6793 mode: snapshot.mode,
6794 position_map: Rc::new(PositionMap {
6795 size: bounds.size,
6796 scroll_pixel_position,
6797 scroll_max,
6798 line_layouts,
6799 line_height,
6800 em_width,
6801 em_advance,
6802 snapshot,
6803 }),
6804 visible_display_row_range: start_row..end_row,
6805 wrap_guides,
6806 indent_guides,
6807 hitbox,
6808 text_hitbox,
6809 gutter_hitbox,
6810 display_hunks,
6811 content_origin,
6812 scrollbars_layout,
6813 active_rows,
6814 highlighted_rows,
6815 highlighted_ranges,
6816 highlighted_gutter_ranges,
6817 redacted_ranges,
6818 line_elements,
6819 line_numbers,
6820 blamed_display_rows,
6821 inline_blame,
6822 blocks,
6823 cursors,
6824 visible_cursors,
6825 selections,
6826 inline_completion_popover,
6827 mouse_context_menu,
6828 test_indicators,
6829 code_actions_indicator,
6830 crease_toggles,
6831 crease_trailers,
6832 tab_invisible,
6833 space_invisible,
6834 sticky_buffer_header,
6835 }
6836 })
6837 })
6838 })
6839 }
6840
6841 fn paint(
6842 &mut self,
6843 _: Option<&GlobalElementId>,
6844 bounds: Bounds<gpui::Pixels>,
6845 _: &mut Self::RequestLayoutState,
6846 layout: &mut Self::PrepaintState,
6847 cx: &mut WindowContext,
6848 ) {
6849 let focus_handle = self.editor.focus_handle(cx);
6850 let key_context = self.editor.update(cx, |editor, cx| editor.key_context(cx));
6851
6852 cx.set_key_context(key_context);
6853 cx.handle_input(
6854 &focus_handle,
6855 ElementInputHandler::new(bounds, self.editor.clone()),
6856 );
6857 self.register_actions(cx);
6858 self.register_key_listeners(cx, layout);
6859
6860 let text_style = TextStyleRefinement {
6861 font_size: Some(self.style.text.font_size),
6862 line_height: Some(self.style.text.line_height),
6863 ..Default::default()
6864 };
6865 let hovered_hunk = layout
6866 .display_hunks
6867 .iter()
6868 .find_map(|(hunk, hunk_hitbox)| match hunk {
6869 DisplayDiffHunk::Folded { .. } => None,
6870 DisplayDiffHunk::Unfolded {
6871 diff_base_byte_range,
6872 multi_buffer_range,
6873 status,
6874 ..
6875 } => {
6876 if hunk_hitbox
6877 .as_ref()
6878 .map(|hitbox| hitbox.is_hovered(cx))
6879 .unwrap_or(false)
6880 {
6881 Some(HoveredHunk {
6882 status: *status,
6883 multi_buffer_range: multi_buffer_range.clone(),
6884 diff_base_byte_range: diff_base_byte_range.clone(),
6885 })
6886 } else {
6887 None
6888 }
6889 }
6890 });
6891 let rem_size = self.rem_size(cx);
6892 cx.with_rem_size(rem_size, |cx| {
6893 cx.with_text_style(Some(text_style), |cx| {
6894 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
6895 self.paint_mouse_listeners(layout, hovered_hunk, cx);
6896 self.paint_background(layout, cx);
6897 self.paint_indent_guides(layout, cx);
6898
6899 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6900 self.paint_blamed_display_rows(layout, cx);
6901 self.paint_line_numbers(layout, cx);
6902 }
6903
6904 self.paint_text(layout, cx);
6905
6906 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6907 self.paint_gutter_highlights(layout, cx);
6908 self.paint_gutter_indicators(layout, cx);
6909 }
6910
6911 if !layout.blocks.is_empty() {
6912 cx.with_element_namespace("blocks", |cx| {
6913 self.paint_blocks(layout, cx);
6914 });
6915 }
6916
6917 cx.with_element_namespace("blocks", |cx| {
6918 if let Some(mut sticky_header) = layout.sticky_buffer_header.take() {
6919 sticky_header.paint(cx)
6920 }
6921 });
6922
6923 self.paint_scrollbars(layout, cx);
6924 self.paint_inline_completion_popover(layout, cx);
6925 self.paint_mouse_context_menu(layout, cx);
6926 });
6927 })
6928 })
6929 }
6930}
6931
6932pub(super) fn gutter_bounds(
6933 editor_bounds: Bounds<Pixels>,
6934 gutter_dimensions: GutterDimensions,
6935) -> Bounds<Pixels> {
6936 Bounds {
6937 origin: editor_bounds.origin,
6938 size: size(gutter_dimensions.width, editor_bounds.size.height),
6939 }
6940}
6941
6942struct ScrollbarRangeData {
6943 scrollbar_bounds: Bounds<Pixels>,
6944 scroll_range: Bounds<Pixels>,
6945 letter_size: Size<Pixels>,
6946}
6947
6948impl ScrollbarRangeData {
6949 pub fn new(
6950 scrollbar_bounds: Bounds<Pixels>,
6951 letter_size: Size<Pixels>,
6952 snapshot: &EditorSnapshot,
6953 longest_line_width: Pixels,
6954 style: &EditorStyle,
6955 cx: &WindowContext,
6956 ) -> ScrollbarRangeData {
6957 // TODO: Simplify this function down, it requires a lot of parameters
6958 let max_row = snapshot.max_point().row();
6959 let text_bounds_size = size(longest_line_width, max_row.0 as f32 * letter_size.height);
6960
6961 let scrollbar_width = style.scrollbar_width;
6962
6963 let settings = EditorSettings::get_global(cx);
6964 let scroll_beyond_last_line: Pixels = match settings.scroll_beyond_last_line {
6965 ScrollBeyondLastLine::OnePage => px(scrollbar_bounds.size.height / letter_size.height),
6966 ScrollBeyondLastLine::Off => px(1.),
6967 ScrollBeyondLastLine::VerticalScrollMargin => px(1.0 + settings.vertical_scroll_margin),
6968 };
6969
6970 let overscroll = size(
6971 scrollbar_width + (letter_size.width / 2.0),
6972 letter_size.height * scroll_beyond_last_line,
6973 );
6974
6975 let scroll_range = Bounds {
6976 origin: scrollbar_bounds.origin,
6977 size: text_bounds_size + overscroll,
6978 };
6979
6980 ScrollbarRangeData {
6981 scrollbar_bounds,
6982 scroll_range,
6983 letter_size,
6984 }
6985 }
6986}
6987
6988impl IntoElement for EditorElement {
6989 type Element = Self;
6990
6991 fn into_element(self) -> Self::Element {
6992 self
6993 }
6994}
6995
6996pub struct EditorLayout {
6997 position_map: Rc<PositionMap>,
6998 hitbox: Hitbox,
6999 text_hitbox: Hitbox,
7000 gutter_hitbox: Hitbox,
7001 content_origin: gpui::Point<Pixels>,
7002 scrollbars_layout: AxisPair<Option<ScrollbarLayout>>,
7003 mode: EditorMode,
7004 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
7005 indent_guides: Option<Vec<IndentGuideLayout>>,
7006 visible_display_row_range: Range<DisplayRow>,
7007 active_rows: BTreeMap<DisplayRow, bool>,
7008 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
7009 line_elements: SmallVec<[AnyElement; 1]>,
7010 line_numbers: Arc<HashMap<MultiBufferRow, LineNumberLayout>>,
7011 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
7012 blamed_display_rows: Option<Vec<AnyElement>>,
7013 inline_blame: Option<AnyElement>,
7014 blocks: Vec<BlockLayout>,
7015 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
7016 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
7017 redacted_ranges: Vec<Range<DisplayPoint>>,
7018 cursors: Vec<(DisplayPoint, Hsla)>,
7019 visible_cursors: Vec<CursorLayout>,
7020 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
7021 code_actions_indicator: Option<AnyElement>,
7022 test_indicators: Vec<AnyElement>,
7023 crease_toggles: Vec<Option<AnyElement>>,
7024 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
7025 inline_completion_popover: Option<AnyElement>,
7026 mouse_context_menu: Option<AnyElement>,
7027 tab_invisible: ShapedLine,
7028 space_invisible: ShapedLine,
7029 sticky_buffer_header: Option<AnyElement>,
7030}
7031
7032impl EditorLayout {
7033 fn line_end_overshoot(&self) -> Pixels {
7034 0.15 * self.position_map.line_height
7035 }
7036}
7037
7038struct LineNumberLayout {
7039 shaped_line: ShapedLine,
7040 hitbox: Option<Hitbox>,
7041 display_row: DisplayRow,
7042}
7043
7044struct ColoredRange<T> {
7045 start: T,
7046 end: T,
7047 color: Hsla,
7048}
7049
7050#[derive(Clone)]
7051struct ScrollbarLayout {
7052 hitbox: Hitbox,
7053 visible_range: Range<f32>,
7054 visible: bool,
7055 text_unit_size: Pixels,
7056 thumb_size: Pixels,
7057 axis: Axis,
7058}
7059
7060impl ScrollbarLayout {
7061 const BORDER_WIDTH: Pixels = px(1.0);
7062 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
7063 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
7064 // const MIN_THUMB_HEIGHT: Pixels = px(20.0);
7065
7066 fn thumb_bounds(&self) -> Bounds<Pixels> {
7067 match self.axis {
7068 Axis::Vertical => {
7069 let thumb_top = self.y_for_row(self.visible_range.start);
7070 let thumb_bottom = thumb_top + self.thumb_size;
7071 Bounds::from_corners(
7072 point(self.hitbox.left(), thumb_top),
7073 point(self.hitbox.right(), thumb_bottom),
7074 )
7075 }
7076 Axis::Horizontal => {
7077 let thumb_left =
7078 self.hitbox.left() + self.visible_range.start * self.text_unit_size;
7079 let thumb_right = thumb_left + self.thumb_size;
7080 Bounds::from_corners(
7081 point(thumb_left, self.hitbox.top()),
7082 point(thumb_right, self.hitbox.bottom()),
7083 )
7084 }
7085 }
7086 }
7087
7088 fn y_for_row(&self, row: f32) -> Pixels {
7089 self.hitbox.top() + row * self.text_unit_size
7090 }
7091
7092 fn marker_quads_for_ranges(
7093 &self,
7094 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
7095 column: Option<usize>,
7096 ) -> Vec<PaintQuad> {
7097 struct MinMax {
7098 min: Pixels,
7099 max: Pixels,
7100 }
7101 let (x_range, height_limit) = if let Some(column) = column {
7102 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
7103 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
7104 let end = start + column_width;
7105 (
7106 Range { start, end },
7107 MinMax {
7108 min: Self::MIN_MARKER_HEIGHT,
7109 max: px(f32::MAX),
7110 },
7111 )
7112 } else {
7113 (
7114 Range {
7115 start: Self::BORDER_WIDTH,
7116 end: self.hitbox.size.width,
7117 },
7118 MinMax {
7119 min: Self::LINE_MARKER_HEIGHT,
7120 max: Self::LINE_MARKER_HEIGHT,
7121 },
7122 )
7123 };
7124
7125 let row_to_y = |row: DisplayRow| row.as_f32() * self.text_unit_size;
7126 let mut pixel_ranges = row_ranges
7127 .into_iter()
7128 .map(|range| {
7129 let start_y = row_to_y(range.start);
7130 let end_y = row_to_y(range.end)
7131 + self
7132 .text_unit_size
7133 .max(height_limit.min)
7134 .min(height_limit.max);
7135 ColoredRange {
7136 start: start_y,
7137 end: end_y,
7138 color: range.color,
7139 }
7140 })
7141 .peekable();
7142
7143 let mut quads = Vec::new();
7144 while let Some(mut pixel_range) = pixel_ranges.next() {
7145 while let Some(next_pixel_range) = pixel_ranges.peek() {
7146 if pixel_range.end >= next_pixel_range.start - px(1.0)
7147 && pixel_range.color == next_pixel_range.color
7148 {
7149 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
7150 pixel_ranges.next();
7151 } else {
7152 break;
7153 }
7154 }
7155
7156 let bounds = Bounds::from_corners(
7157 point(x_range.start, pixel_range.start),
7158 point(x_range.end, pixel_range.end),
7159 );
7160 quads.push(quad(
7161 bounds,
7162 Corners::default(),
7163 pixel_range.color,
7164 Edges::default(),
7165 Hsla::transparent_black(),
7166 ));
7167 }
7168
7169 quads
7170 }
7171}
7172
7173struct CreaseTrailerLayout {
7174 element: AnyElement,
7175 bounds: Bounds<Pixels>,
7176}
7177
7178struct PositionMap {
7179 size: Size<Pixels>,
7180 line_height: Pixels,
7181 scroll_pixel_position: gpui::Point<Pixels>,
7182 scroll_max: gpui::Point<f32>,
7183 em_width: Pixels,
7184 em_advance: Pixels,
7185 line_layouts: Vec<LineWithInvisibles>,
7186 snapshot: EditorSnapshot,
7187}
7188
7189#[derive(Debug, Copy, Clone)]
7190pub struct PointForPosition {
7191 pub previous_valid: DisplayPoint,
7192 pub next_valid: DisplayPoint,
7193 pub exact_unclipped: DisplayPoint,
7194 pub column_overshoot_after_line_end: u32,
7195}
7196
7197impl PointForPosition {
7198 pub fn as_valid(&self) -> Option<DisplayPoint> {
7199 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
7200 Some(self.previous_valid)
7201 } else {
7202 None
7203 }
7204 }
7205}
7206
7207impl PositionMap {
7208 fn point_for_position(
7209 &self,
7210 text_bounds: Bounds<Pixels>,
7211 position: gpui::Point<Pixels>,
7212 ) -> PointForPosition {
7213 let scroll_position = self.snapshot.scroll_position();
7214 let position = position - text_bounds.origin;
7215 let y = position.y.max(px(0.)).min(self.size.height);
7216 let x = position.x + (scroll_position.x * self.em_width);
7217 let row = ((y / self.line_height) + scroll_position.y) as u32;
7218
7219 let (column, x_overshoot_after_line_end) = if let Some(line) = self
7220 .line_layouts
7221 .get(row as usize - scroll_position.y as usize)
7222 {
7223 if let Some(ix) = line.index_for_x(x) {
7224 (ix as u32, px(0.))
7225 } else {
7226 (line.len as u32, px(0.).max(x - line.width))
7227 }
7228 } else {
7229 (0, x)
7230 };
7231
7232 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
7233 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
7234 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
7235
7236 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
7237 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
7238 PointForPosition {
7239 previous_valid,
7240 next_valid,
7241 exact_unclipped,
7242 column_overshoot_after_line_end,
7243 }
7244 }
7245}
7246
7247struct BlockLayout {
7248 id: BlockId,
7249 row: Option<DisplayRow>,
7250 element: AnyElement,
7251 available_space: Size<AvailableSpace>,
7252 style: BlockStyle,
7253}
7254
7255fn layout_line(
7256 row: DisplayRow,
7257 snapshot: &EditorSnapshot,
7258 style: &EditorStyle,
7259 text_width: Pixels,
7260 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
7261 cx: &mut WindowContext,
7262) -> LineWithInvisibles {
7263 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
7264 LineWithInvisibles::from_chunks(
7265 chunks,
7266 &style,
7267 MAX_LINE_LEN,
7268 1,
7269 snapshot.mode,
7270 text_width,
7271 is_row_soft_wrapped,
7272 cx,
7273 )
7274 .pop()
7275 .unwrap()
7276}
7277
7278#[derive(Debug)]
7279pub struct IndentGuideLayout {
7280 origin: gpui::Point<Pixels>,
7281 length: Pixels,
7282 single_indent_width: Pixels,
7283 depth: u32,
7284 active: bool,
7285 settings: IndentGuideSettings,
7286}
7287
7288pub struct CursorLayout {
7289 origin: gpui::Point<Pixels>,
7290 block_width: Pixels,
7291 line_height: Pixels,
7292 color: Hsla,
7293 shape: CursorShape,
7294 block_text: Option<ShapedLine>,
7295 cursor_name: Option<AnyElement>,
7296}
7297
7298#[derive(Debug)]
7299pub struct CursorName {
7300 string: SharedString,
7301 color: Hsla,
7302 is_top_row: bool,
7303}
7304
7305impl CursorLayout {
7306 pub fn new(
7307 origin: gpui::Point<Pixels>,
7308 block_width: Pixels,
7309 line_height: Pixels,
7310 color: Hsla,
7311 shape: CursorShape,
7312 block_text: Option<ShapedLine>,
7313 ) -> CursorLayout {
7314 CursorLayout {
7315 origin,
7316 block_width,
7317 line_height,
7318 color,
7319 shape,
7320 block_text,
7321 cursor_name: None,
7322 }
7323 }
7324
7325 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
7326 Bounds {
7327 origin: self.origin + origin,
7328 size: size(self.block_width, self.line_height),
7329 }
7330 }
7331
7332 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
7333 match self.shape {
7334 CursorShape::Bar => Bounds {
7335 origin: self.origin + origin,
7336 size: size(px(2.0), self.line_height),
7337 },
7338 CursorShape::Block | CursorShape::Hollow => Bounds {
7339 origin: self.origin + origin,
7340 size: size(self.block_width, self.line_height),
7341 },
7342 CursorShape::Underline => Bounds {
7343 origin: self.origin
7344 + origin
7345 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
7346 size: size(self.block_width, px(2.0)),
7347 },
7348 }
7349 }
7350
7351 pub fn layout(
7352 &mut self,
7353 origin: gpui::Point<Pixels>,
7354 cursor_name: Option<CursorName>,
7355 cx: &mut WindowContext,
7356 ) {
7357 if let Some(cursor_name) = cursor_name {
7358 let bounds = self.bounds(origin);
7359 let text_size = self.line_height / 1.5;
7360
7361 let name_origin = if cursor_name.is_top_row {
7362 point(bounds.right() - px(1.), bounds.top())
7363 } else {
7364 match self.shape {
7365 CursorShape::Bar => point(
7366 bounds.right() - px(2.),
7367 bounds.top() - text_size / 2. - px(1.),
7368 ),
7369 _ => point(
7370 bounds.right() - px(1.),
7371 bounds.top() - text_size / 2. - px(1.),
7372 ),
7373 }
7374 };
7375 let mut name_element = div()
7376 .bg(self.color)
7377 .text_size(text_size)
7378 .px_0p5()
7379 .line_height(text_size + px(2.))
7380 .text_color(cursor_name.color)
7381 .child(cursor_name.string.clone())
7382 .into_any_element();
7383
7384 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
7385
7386 self.cursor_name = Some(name_element);
7387 }
7388 }
7389
7390 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
7391 let bounds = self.bounds(origin);
7392
7393 //Draw background or border quad
7394 let cursor = if matches!(self.shape, CursorShape::Hollow) {
7395 outline(bounds, self.color)
7396 } else {
7397 fill(bounds, self.color)
7398 };
7399
7400 if let Some(name) = &mut self.cursor_name {
7401 name.paint(cx);
7402 }
7403
7404 cx.paint_quad(cursor);
7405
7406 if let Some(block_text) = &self.block_text {
7407 block_text
7408 .paint(self.origin + origin, self.line_height, cx)
7409 .log_err();
7410 }
7411 }
7412
7413 pub fn shape(&self) -> CursorShape {
7414 self.shape
7415 }
7416}
7417
7418#[derive(Debug)]
7419pub struct HighlightedRange {
7420 pub start_y: Pixels,
7421 pub line_height: Pixels,
7422 pub lines: Vec<HighlightedRangeLine>,
7423 pub color: Hsla,
7424 pub corner_radius: Pixels,
7425}
7426
7427#[derive(Debug)]
7428pub struct HighlightedRangeLine {
7429 pub start_x: Pixels,
7430 pub end_x: Pixels,
7431}
7432
7433impl HighlightedRange {
7434 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
7435 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
7436 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
7437 self.paint_lines(
7438 self.start_y + self.line_height,
7439 &self.lines[1..],
7440 bounds,
7441 cx,
7442 );
7443 } else {
7444 self.paint_lines(self.start_y, &self.lines, bounds, cx);
7445 }
7446 }
7447
7448 fn paint_lines(
7449 &self,
7450 start_y: Pixels,
7451 lines: &[HighlightedRangeLine],
7452 _bounds: Bounds<Pixels>,
7453 cx: &mut WindowContext,
7454 ) {
7455 if lines.is_empty() {
7456 return;
7457 }
7458
7459 let first_line = lines.first().unwrap();
7460 let last_line = lines.last().unwrap();
7461
7462 let first_top_left = point(first_line.start_x, start_y);
7463 let first_top_right = point(first_line.end_x, start_y);
7464
7465 let curve_height = point(Pixels::ZERO, self.corner_radius);
7466 let curve_width = |start_x: Pixels, end_x: Pixels| {
7467 let max = (end_x - start_x) / 2.;
7468 let width = if max < self.corner_radius {
7469 max
7470 } else {
7471 self.corner_radius
7472 };
7473
7474 point(width, Pixels::ZERO)
7475 };
7476
7477 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
7478 let mut path = gpui::Path::new(first_top_right - top_curve_width);
7479 path.curve_to(first_top_right + curve_height, first_top_right);
7480
7481 let mut iter = lines.iter().enumerate().peekable();
7482 while let Some((ix, line)) = iter.next() {
7483 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
7484
7485 if let Some((_, next_line)) = iter.peek() {
7486 let next_top_right = point(next_line.end_x, bottom_right.y);
7487
7488 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
7489 Ordering::Equal => {
7490 path.line_to(bottom_right);
7491 }
7492 Ordering::Less => {
7493 let curve_width = curve_width(next_top_right.x, bottom_right.x);
7494 path.line_to(bottom_right - curve_height);
7495 if self.corner_radius > Pixels::ZERO {
7496 path.curve_to(bottom_right - curve_width, bottom_right);
7497 }
7498 path.line_to(next_top_right + curve_width);
7499 if self.corner_radius > Pixels::ZERO {
7500 path.curve_to(next_top_right + curve_height, next_top_right);
7501 }
7502 }
7503 Ordering::Greater => {
7504 let curve_width = curve_width(bottom_right.x, next_top_right.x);
7505 path.line_to(bottom_right - curve_height);
7506 if self.corner_radius > Pixels::ZERO {
7507 path.curve_to(bottom_right + curve_width, bottom_right);
7508 }
7509 path.line_to(next_top_right - curve_width);
7510 if self.corner_radius > Pixels::ZERO {
7511 path.curve_to(next_top_right + curve_height, next_top_right);
7512 }
7513 }
7514 }
7515 } else {
7516 let curve_width = curve_width(line.start_x, line.end_x);
7517 path.line_to(bottom_right - curve_height);
7518 if self.corner_radius > Pixels::ZERO {
7519 path.curve_to(bottom_right - curve_width, bottom_right);
7520 }
7521
7522 let bottom_left = point(line.start_x, bottom_right.y);
7523 path.line_to(bottom_left + curve_width);
7524 if self.corner_radius > Pixels::ZERO {
7525 path.curve_to(bottom_left - curve_height, bottom_left);
7526 }
7527 }
7528 }
7529
7530 if first_line.start_x > last_line.start_x {
7531 let curve_width = curve_width(last_line.start_x, first_line.start_x);
7532 let second_top_left = point(last_line.start_x, start_y + self.line_height);
7533 path.line_to(second_top_left + curve_height);
7534 if self.corner_radius > Pixels::ZERO {
7535 path.curve_to(second_top_left + curve_width, second_top_left);
7536 }
7537 let first_bottom_left = point(first_line.start_x, second_top_left.y);
7538 path.line_to(first_bottom_left - curve_width);
7539 if self.corner_radius > Pixels::ZERO {
7540 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
7541 }
7542 }
7543
7544 path.line_to(first_top_left + curve_height);
7545 if self.corner_radius > Pixels::ZERO {
7546 path.curve_to(first_top_left + top_curve_width, first_top_left);
7547 }
7548 path.line_to(first_top_right - top_curve_width);
7549
7550 cx.paint_path(path, self.color);
7551 }
7552}
7553
7554pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7555 (delta.pow(1.5) / 100.0).into()
7556}
7557
7558fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7559 (delta.pow(1.2) / 300.0).into()
7560}
7561
7562pub fn register_action<T: Action>(
7563 view: &View<Editor>,
7564 cx: &mut WindowContext,
7565 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
7566) {
7567 let view = view.clone();
7568 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
7569 let action = action.downcast_ref().unwrap();
7570 if phase == DispatchPhase::Bubble {
7571 view.update(cx, |editor, cx| {
7572 listener(editor, action, cx);
7573 })
7574 }
7575 })
7576}
7577
7578fn compute_auto_height_layout(
7579 editor: &mut Editor,
7580 max_lines: usize,
7581 max_line_number_width: Pixels,
7582 known_dimensions: Size<Option<Pixels>>,
7583 available_width: AvailableSpace,
7584 cx: &mut ViewContext<Editor>,
7585) -> Option<Size<Pixels>> {
7586 let width = known_dimensions.width.or({
7587 if let AvailableSpace::Definite(available_width) = available_width {
7588 Some(available_width)
7589 } else {
7590 None
7591 }
7592 })?;
7593 if let Some(height) = known_dimensions.height {
7594 return Some(size(width, height));
7595 }
7596
7597 let style = editor.style.as_ref().unwrap();
7598 let font_id = cx.text_system().resolve_font(&style.text.font());
7599 let font_size = style.text.font_size.to_pixels(cx.rem_size());
7600 let line_height = style.text.line_height_in_pixels(cx.rem_size());
7601 let em_width = cx
7602 .text_system()
7603 .typographic_bounds(font_id, font_size, 'm')
7604 .unwrap()
7605 .size
7606 .width;
7607 let em_advance = cx
7608 .text_system()
7609 .advance(font_id, font_size, 'm')
7610 .unwrap()
7611 .width;
7612
7613 let mut snapshot = editor.snapshot(cx);
7614 let gutter_dimensions = snapshot.gutter_dimensions(
7615 font_id,
7616 font_size,
7617 em_width,
7618 em_advance,
7619 max_line_number_width,
7620 cx,
7621 );
7622
7623 editor.gutter_dimensions = gutter_dimensions;
7624 let text_width = width - gutter_dimensions.width;
7625 let overscroll = size(em_width, px(0.));
7626
7627 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
7628 if editor.set_wrap_width(Some(editor_width), cx) {
7629 snapshot = editor.snapshot(cx);
7630 }
7631
7632 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
7633 let height = scroll_height
7634 .max(line_height)
7635 .min(line_height * max_lines as f32);
7636
7637 Some(size(width, height))
7638}
7639
7640#[cfg(test)]
7641mod tests {
7642 use super::*;
7643 use crate::{
7644 display_map::{BlockPlacement, BlockProperties},
7645 editor_tests::{init_test, update_test_language_settings},
7646 Editor, MultiBuffer,
7647 };
7648 use gpui::{TestAppContext, VisualTestContext};
7649 use language::language_settings;
7650 use log::info;
7651 use similar::DiffableStr;
7652 use std::num::NonZeroU32;
7653 use util::test::sample_text;
7654
7655 #[gpui::test]
7656 fn test_shape_line_numbers(cx: &mut TestAppContext) {
7657 init_test(cx, |_| {});
7658 let window = cx.add_window(|cx| {
7659 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
7660 Editor::new(EditorMode::Full, buffer, None, true, cx)
7661 });
7662
7663 let editor = window.root(cx).unwrap();
7664 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7665 let line_height = window
7666 .update(cx, |_, cx| style.text.line_height_in_pixels(cx.rem_size()))
7667 .unwrap();
7668 let element = EditorElement::new(&editor, style);
7669 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
7670
7671 let layouts = cx
7672 .update_window(*window, |_, cx| {
7673 element.layout_line_numbers(
7674 None,
7675 GutterDimensions {
7676 left_padding: Pixels::ZERO,
7677 right_padding: Pixels::ZERO,
7678 width: px(30.0),
7679 margin: Pixels::ZERO,
7680 git_blame_entries_width: None,
7681 },
7682 line_height,
7683 gpui::Point::default(),
7684 DisplayRow(0)..DisplayRow(6),
7685 (0..6).map(MultiBufferRow).map(Some),
7686 Some(DisplayPoint::new(DisplayRow(0), 0)),
7687 &snapshot,
7688 cx,
7689 )
7690 })
7691 .unwrap();
7692 assert_eq!(layouts.len(), 6);
7693
7694 let relative_rows = window
7695 .update(cx, |editor, cx| {
7696 let snapshot = editor.snapshot(cx);
7697 element.calculate_relative_line_numbers(
7698 &snapshot,
7699 &(DisplayRow(0)..DisplayRow(6)),
7700 Some(DisplayRow(3)),
7701 )
7702 })
7703 .unwrap();
7704 assert_eq!(relative_rows[&DisplayRow(0)], 3);
7705 assert_eq!(relative_rows[&DisplayRow(1)], 2);
7706 assert_eq!(relative_rows[&DisplayRow(2)], 1);
7707 // current line has no relative number
7708 assert_eq!(relative_rows[&DisplayRow(4)], 1);
7709 assert_eq!(relative_rows[&DisplayRow(5)], 2);
7710
7711 // works if cursor is before screen
7712 let relative_rows = window
7713 .update(cx, |editor, cx| {
7714 let snapshot = editor.snapshot(cx);
7715 element.calculate_relative_line_numbers(
7716 &snapshot,
7717 &(DisplayRow(3)..DisplayRow(6)),
7718 Some(DisplayRow(1)),
7719 )
7720 })
7721 .unwrap();
7722 assert_eq!(relative_rows.len(), 3);
7723 assert_eq!(relative_rows[&DisplayRow(3)], 2);
7724 assert_eq!(relative_rows[&DisplayRow(4)], 3);
7725 assert_eq!(relative_rows[&DisplayRow(5)], 4);
7726
7727 // works if cursor is after screen
7728 let relative_rows = window
7729 .update(cx, |editor, cx| {
7730 let snapshot = editor.snapshot(cx);
7731 element.calculate_relative_line_numbers(
7732 &snapshot,
7733 &(DisplayRow(0)..DisplayRow(3)),
7734 Some(DisplayRow(6)),
7735 )
7736 })
7737 .unwrap();
7738 assert_eq!(relative_rows.len(), 3);
7739 assert_eq!(relative_rows[&DisplayRow(0)], 5);
7740 assert_eq!(relative_rows[&DisplayRow(1)], 4);
7741 assert_eq!(relative_rows[&DisplayRow(2)], 3);
7742 }
7743
7744 #[gpui::test]
7745 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
7746 init_test(cx, |_| {});
7747
7748 let window = cx.add_window(|cx| {
7749 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
7750 Editor::new(EditorMode::Full, buffer, None, true, cx)
7751 });
7752 let cx = &mut VisualTestContext::from_window(*window, cx);
7753 let editor = window.root(cx).unwrap();
7754 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7755
7756 window
7757 .update(cx, |editor, cx| {
7758 editor.cursor_shape = CursorShape::Block;
7759 editor.change_selections(None, cx, |s| {
7760 s.select_ranges([
7761 Point::new(0, 0)..Point::new(1, 0),
7762 Point::new(3, 2)..Point::new(3, 3),
7763 Point::new(5, 6)..Point::new(6, 0),
7764 ]);
7765 });
7766 })
7767 .unwrap();
7768
7769 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7770 EditorElement::new(&editor, style)
7771 });
7772
7773 assert_eq!(state.selections.len(), 1);
7774 let local_selections = &state.selections[0].1;
7775 assert_eq!(local_selections.len(), 3);
7776 // moves cursor back one line
7777 assert_eq!(
7778 local_selections[0].head,
7779 DisplayPoint::new(DisplayRow(0), 6)
7780 );
7781 assert_eq!(
7782 local_selections[0].range,
7783 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
7784 );
7785
7786 // moves cursor back one column
7787 assert_eq!(
7788 local_selections[1].range,
7789 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
7790 );
7791 assert_eq!(
7792 local_selections[1].head,
7793 DisplayPoint::new(DisplayRow(3), 2)
7794 );
7795
7796 // leaves cursor on the max point
7797 assert_eq!(
7798 local_selections[2].range,
7799 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
7800 );
7801 assert_eq!(
7802 local_selections[2].head,
7803 DisplayPoint::new(DisplayRow(6), 0)
7804 );
7805
7806 // active lines does not include 1 (even though the range of the selection does)
7807 assert_eq!(
7808 state.active_rows.keys().cloned().collect::<Vec<_>>(),
7809 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
7810 );
7811
7812 // multi-buffer support
7813 // in DisplayPoint coordinates, this is what we're dealing with:
7814 // 0: [[file
7815 // 1: header
7816 // 2: section]]
7817 // 3: aaaaaa
7818 // 4: bbbbbb
7819 // 5: cccccc
7820 // 6:
7821 // 7: [[footer]]
7822 // 8: [[header]]
7823 // 9: ffffff
7824 // 10: gggggg
7825 // 11: hhhhhh
7826 // 12:
7827 // 13: [[footer]]
7828 // 14: [[file
7829 // 15: header
7830 // 16: section]]
7831 // 17: bbbbbb
7832 // 18: cccccc
7833 // 19: dddddd
7834 // 20: [[footer]]
7835 let window = cx.add_window(|cx| {
7836 let buffer = MultiBuffer::build_multi(
7837 [
7838 (
7839 &(sample_text(8, 6, 'a') + "\n"),
7840 vec![
7841 Point::new(0, 0)..Point::new(3, 0),
7842 Point::new(4, 0)..Point::new(7, 0),
7843 ],
7844 ),
7845 (
7846 &(sample_text(8, 6, 'a') + "\n"),
7847 vec![Point::new(1, 0)..Point::new(3, 0)],
7848 ),
7849 ],
7850 cx,
7851 );
7852 Editor::new(EditorMode::Full, buffer, None, true, cx)
7853 });
7854 let editor = window.root(cx).unwrap();
7855 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7856 let _state = window.update(cx, |editor, cx| {
7857 editor.cursor_shape = CursorShape::Block;
7858 editor.change_selections(None, cx, |s| {
7859 s.select_display_ranges([
7860 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
7861 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
7862 ]);
7863 });
7864 });
7865
7866 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7867 EditorElement::new(&editor, style)
7868 });
7869 assert_eq!(state.selections.len(), 1);
7870 let local_selections = &state.selections[0].1;
7871 assert_eq!(local_selections.len(), 2);
7872
7873 // moves cursor on excerpt boundary back a line
7874 // and doesn't allow selection to bleed through
7875 assert_eq!(
7876 local_selections[0].range,
7877 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
7878 );
7879 assert_eq!(
7880 local_selections[0].head,
7881 DisplayPoint::new(DisplayRow(6), 0)
7882 );
7883 // moves cursor on buffer boundary back two lines
7884 // and doesn't allow selection to bleed through
7885 assert_eq!(
7886 local_selections[1].range,
7887 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
7888 );
7889 assert_eq!(
7890 local_selections[1].head,
7891 DisplayPoint::new(DisplayRow(12), 0)
7892 );
7893 }
7894
7895 #[gpui::test]
7896 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
7897 init_test(cx, |_| {});
7898
7899 let window = cx.add_window(|cx| {
7900 let buffer = MultiBuffer::build_simple("", cx);
7901 Editor::new(EditorMode::Full, buffer, None, true, cx)
7902 });
7903 let cx = &mut VisualTestContext::from_window(*window, cx);
7904 let editor = window.root(cx).unwrap();
7905 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7906 window
7907 .update(cx, |editor, cx| {
7908 editor.set_placeholder_text("hello", cx);
7909 editor.insert_blocks(
7910 [BlockProperties {
7911 style: BlockStyle::Fixed,
7912 placement: BlockPlacement::Above(Anchor::min()),
7913 height: 3,
7914 render: Arc::new(|cx| div().h(3. * cx.line_height()).into_any()),
7915 priority: 0,
7916 }],
7917 None,
7918 cx,
7919 );
7920
7921 // Blur the editor so that it displays placeholder text.
7922 cx.blur();
7923 })
7924 .unwrap();
7925
7926 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7927 EditorElement::new(&editor, style)
7928 });
7929 assert_eq!(state.position_map.line_layouts.len(), 4);
7930 assert_eq!(state.line_numbers.len(), 1);
7931 assert_eq!(
7932 state
7933 .line_numbers
7934 .get(&MultiBufferRow(0))
7935 .and_then(|line_number| line_number.shaped_line.text.as_str()),
7936 Some("1")
7937 );
7938 }
7939
7940 #[gpui::test]
7941 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
7942 const TAB_SIZE: u32 = 4;
7943
7944 let input_text = "\t \t|\t| a b";
7945 let expected_invisibles = vec![
7946 Invisible::Tab {
7947 line_start_offset: 0,
7948 line_end_offset: TAB_SIZE as usize,
7949 },
7950 Invisible::Whitespace {
7951 line_offset: TAB_SIZE as usize,
7952 },
7953 Invisible::Tab {
7954 line_start_offset: TAB_SIZE as usize + 1,
7955 line_end_offset: TAB_SIZE as usize * 2,
7956 },
7957 Invisible::Tab {
7958 line_start_offset: TAB_SIZE as usize * 2 + 1,
7959 line_end_offset: TAB_SIZE as usize * 3,
7960 },
7961 Invisible::Whitespace {
7962 line_offset: TAB_SIZE as usize * 3 + 1,
7963 },
7964 Invisible::Whitespace {
7965 line_offset: TAB_SIZE as usize * 3 + 3,
7966 },
7967 ];
7968 assert_eq!(
7969 expected_invisibles.len(),
7970 input_text
7971 .chars()
7972 .filter(|initial_char| initial_char.is_whitespace())
7973 .count(),
7974 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
7975 );
7976
7977 for show_line_numbers in [true, false] {
7978 init_test(cx, |s| {
7979 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7980 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
7981 });
7982
7983 let actual_invisibles = collect_invisibles_from_new_editor(
7984 cx,
7985 EditorMode::Full,
7986 input_text,
7987 px(500.0),
7988 show_line_numbers,
7989 );
7990
7991 assert_eq!(expected_invisibles, actual_invisibles);
7992 }
7993 }
7994
7995 #[gpui::test]
7996 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
7997 init_test(cx, |s| {
7998 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7999 s.defaults.tab_size = NonZeroU32::new(4);
8000 });
8001
8002 for editor_mode_without_invisibles in [
8003 EditorMode::SingleLine { auto_width: false },
8004 EditorMode::AutoHeight { max_lines: 100 },
8005 ] {
8006 for show_line_numbers in [true, false] {
8007 let invisibles = collect_invisibles_from_new_editor(
8008 cx,
8009 editor_mode_without_invisibles,
8010 "\t\t\t| | a b",
8011 px(500.0),
8012 show_line_numbers,
8013 );
8014 assert!(invisibles.is_empty(),
8015 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
8016 }
8017 }
8018 }
8019
8020 #[gpui::test]
8021 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
8022 let tab_size = 4;
8023 let input_text = "a\tbcd ".repeat(9);
8024 let repeated_invisibles = [
8025 Invisible::Tab {
8026 line_start_offset: 1,
8027 line_end_offset: tab_size as usize,
8028 },
8029 Invisible::Whitespace {
8030 line_offset: tab_size as usize + 3,
8031 },
8032 Invisible::Whitespace {
8033 line_offset: tab_size as usize + 4,
8034 },
8035 Invisible::Whitespace {
8036 line_offset: tab_size as usize + 5,
8037 },
8038 Invisible::Whitespace {
8039 line_offset: tab_size as usize + 6,
8040 },
8041 Invisible::Whitespace {
8042 line_offset: tab_size as usize + 7,
8043 },
8044 ];
8045 let expected_invisibles = std::iter::once(repeated_invisibles)
8046 .cycle()
8047 .take(9)
8048 .flatten()
8049 .collect::<Vec<_>>();
8050 assert_eq!(
8051 expected_invisibles.len(),
8052 input_text
8053 .chars()
8054 .filter(|initial_char| initial_char.is_whitespace())
8055 .count(),
8056 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
8057 );
8058 info!("Expected invisibles: {expected_invisibles:?}");
8059
8060 init_test(cx, |_| {});
8061
8062 // Put the same string with repeating whitespace pattern into editors of various size,
8063 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
8064 let resize_step = 10.0;
8065 let mut editor_width = 200.0;
8066 while editor_width <= 1000.0 {
8067 for show_line_numbers in [true, false] {
8068 update_test_language_settings(cx, |s| {
8069 s.defaults.tab_size = NonZeroU32::new(tab_size);
8070 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
8071 s.defaults.preferred_line_length = Some(editor_width as u32);
8072 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
8073 });
8074
8075 let actual_invisibles = collect_invisibles_from_new_editor(
8076 cx,
8077 EditorMode::Full,
8078 &input_text,
8079 px(editor_width),
8080 show_line_numbers,
8081 );
8082
8083 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
8084 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
8085 let mut i = 0;
8086 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
8087 i = actual_index;
8088 match expected_invisibles.get(i) {
8089 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
8090 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
8091 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
8092 _ => {
8093 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
8094 }
8095 },
8096 None => {
8097 panic!("Unexpected extra invisible {actual_invisible:?} at index {i}")
8098 }
8099 }
8100 }
8101 let missing_expected_invisibles = &expected_invisibles[i + 1..];
8102 assert!(
8103 missing_expected_invisibles.is_empty(),
8104 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
8105 );
8106
8107 editor_width += resize_step;
8108 }
8109 }
8110 }
8111
8112 fn collect_invisibles_from_new_editor(
8113 cx: &mut TestAppContext,
8114 editor_mode: EditorMode,
8115 input_text: &str,
8116 editor_width: Pixels,
8117 show_line_numbers: bool,
8118 ) -> Vec<Invisible> {
8119 info!(
8120 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
8121 editor_width.0
8122 );
8123 let window = cx.add_window(|cx| {
8124 let buffer = MultiBuffer::build_simple(input_text, cx);
8125 Editor::new(editor_mode, buffer, None, true, cx)
8126 });
8127 let cx = &mut VisualTestContext::from_window(*window, cx);
8128 let editor = window.root(cx).unwrap();
8129
8130 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
8131 window
8132 .update(cx, |editor, cx| {
8133 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
8134 editor.set_wrap_width(Some(editor_width), cx);
8135 editor.set_show_line_numbers(show_line_numbers, cx);
8136 })
8137 .unwrap();
8138 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
8139 EditorElement::new(&editor, style)
8140 });
8141 state
8142 .position_map
8143 .line_layouts
8144 .iter()
8145 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
8146 .cloned()
8147 .collect()
8148 }
8149}