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::set_mark);
360 register_action(view, cx, Editor::exchange_mark);
361 register_action(view, cx, Editor::show_completions);
362 register_action(view, cx, Editor::toggle_code_actions);
363 register_action(view, cx, Editor::open_excerpts);
364 register_action(view, cx, Editor::open_excerpts_in_split);
365 register_action(view, cx, Editor::open_proposed_changes_editor);
366 register_action(view, cx, Editor::toggle_soft_wrap);
367 register_action(view, cx, Editor::toggle_tab_bar);
368 register_action(view, cx, Editor::toggle_line_numbers);
369 register_action(view, cx, Editor::toggle_relative_line_numbers);
370 register_action(view, cx, Editor::toggle_indent_guides);
371 register_action(view, cx, Editor::toggle_inlay_hints);
372 register_action(view, cx, Editor::toggle_inline_completions);
373 register_action(view, cx, hover_popover::hover);
374 register_action(view, cx, Editor::reveal_in_finder);
375 register_action(view, cx, Editor::copy_path);
376 register_action(view, cx, Editor::copy_relative_path);
377 register_action(view, cx, Editor::copy_highlight_json);
378 register_action(view, cx, Editor::copy_permalink_to_line);
379 register_action(view, cx, Editor::open_permalink_to_line);
380 register_action(view, cx, Editor::copy_file_location);
381 register_action(view, cx, Editor::toggle_git_blame);
382 register_action(view, cx, Editor::toggle_git_blame_inline);
383 register_action(view, cx, Editor::toggle_hunk_diff);
384 register_action(view, cx, Editor::expand_all_hunk_diffs);
385 register_action(view, cx, |editor, action, cx| {
386 if let Some(task) = editor.format(action, cx) {
387 task.detach_and_notify_err(cx);
388 } else {
389 cx.propagate();
390 }
391 });
392 register_action(view, cx, |editor, action, cx| {
393 if let Some(task) = editor.format_selections(action, cx) {
394 task.detach_and_notify_err(cx);
395 } else {
396 cx.propagate();
397 }
398 });
399 register_action(view, cx, Editor::restart_language_server);
400 register_action(view, cx, Editor::cancel_language_server_work);
401 register_action(view, cx, Editor::show_character_palette);
402 register_action(view, cx, |editor, action, cx| {
403 if let Some(task) = editor.confirm_completion(action, cx) {
404 task.detach_and_notify_err(cx);
405 } else {
406 cx.propagate();
407 }
408 });
409 register_action(view, cx, |editor, action, cx| {
410 if let Some(task) = editor.compose_completion(action, cx) {
411 task.detach_and_notify_err(cx);
412 } else {
413 cx.propagate();
414 }
415 });
416 register_action(view, cx, |editor, action, cx| {
417 if let Some(task) = editor.confirm_code_action(action, cx) {
418 task.detach_and_notify_err(cx);
419 } else {
420 cx.propagate();
421 }
422 });
423 register_action(view, cx, |editor, action, cx| {
424 if let Some(task) = editor.rename(action, cx) {
425 task.detach_and_notify_err(cx);
426 } else {
427 cx.propagate();
428 }
429 });
430 register_action(view, cx, |editor, action, cx| {
431 if let Some(task) = editor.confirm_rename(action, cx) {
432 task.detach_and_notify_err(cx);
433 } else {
434 cx.propagate();
435 }
436 });
437 register_action(view, cx, |editor, action, cx| {
438 if let Some(task) = editor.find_all_references(action, cx) {
439 task.detach_and_log_err(cx);
440 } else {
441 cx.propagate();
442 }
443 });
444 register_action(view, cx, Editor::show_signature_help);
445 register_action(view, cx, Editor::next_inline_completion);
446 register_action(view, cx, Editor::previous_inline_completion);
447 register_action(view, cx, Editor::show_inline_completion);
448 register_action(view, cx, Editor::context_menu_first);
449 register_action(view, cx, Editor::context_menu_prev);
450 register_action(view, cx, Editor::context_menu_next);
451 register_action(view, cx, Editor::context_menu_last);
452 register_action(view, cx, Editor::display_cursor_names);
453 register_action(view, cx, Editor::unique_lines_case_insensitive);
454 register_action(view, cx, Editor::unique_lines_case_sensitive);
455 register_action(view, cx, Editor::accept_partial_inline_completion);
456 register_action(view, cx, Editor::accept_inline_completion);
457 register_action(view, cx, Editor::revert_file);
458 register_action(view, cx, Editor::revert_selected_hunks);
459 register_action(view, cx, Editor::apply_all_diff_hunks);
460 register_action(view, cx, Editor::apply_selected_diff_hunks);
461 register_action(view, cx, Editor::open_active_item_in_terminal);
462 register_action(view, cx, Editor::reload_file);
463 register_action(view, cx, Editor::spawn_nearest_task);
464 register_action(view, cx, Editor::insert_uuid_v4);
465 register_action(view, cx, Editor::insert_uuid_v7);
466 }
467
468 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
469 let position_map = layout.position_map.clone();
470 cx.on_key_event({
471 let editor = self.editor.clone();
472 let text_hitbox = layout.text_hitbox.clone();
473 move |event: &ModifiersChangedEvent, phase, cx| {
474 if phase != DispatchPhase::Bubble {
475 return;
476 }
477 editor.update(cx, |editor, cx| {
478 if editor.hover_state.focused(cx) {
479 return;
480 }
481 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
482 })
483 }
484 });
485 }
486
487 fn modifiers_changed(
488 editor: &mut Editor,
489 event: &ModifiersChangedEvent,
490 position_map: &PositionMap,
491 text_hitbox: &Hitbox,
492 cx: &mut ViewContext<Editor>,
493 ) {
494 let mouse_position = cx.mouse_position();
495 if !text_hitbox.is_hovered(cx) {
496 return;
497 }
498
499 editor.update_hovered_link(
500 position_map.point_for_position(text_hitbox.bounds, mouse_position),
501 &position_map.snapshot,
502 event.modifiers,
503 cx,
504 )
505 }
506
507 #[allow(clippy::too_many_arguments)]
508 fn mouse_left_down(
509 editor: &mut Editor,
510 event: &MouseDownEvent,
511 hovered_hunk: Option<HoveredHunk>,
512 position_map: &PositionMap,
513 text_hitbox: &Hitbox,
514 gutter_hitbox: &Hitbox,
515 line_numbers: &HashMap<MultiBufferRow, LineNumberLayout>,
516 cx: &mut ViewContext<Editor>,
517 ) {
518 if cx.default_prevented() {
519 return;
520 }
521
522 let mut click_count = event.click_count;
523 let mut modifiers = event.modifiers;
524
525 if let Some(hovered_hunk) = hovered_hunk {
526 editor.toggle_hovered_hunk(&hovered_hunk, cx);
527 cx.notify();
528 return;
529 } else if gutter_hitbox.is_hovered(cx) {
530 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
531 } else if !text_hitbox.is_hovered(cx) {
532 return;
533 }
534
535 let is_singleton = editor.buffer().read(cx).is_singleton();
536
537 if click_count == 2 && !is_singleton {
538 match EditorSettings::get_global(cx).double_click_in_multibuffer {
539 DoubleClickInMultibuffer::Select => {
540 // do nothing special on double click, all selection logic is below
541 }
542 DoubleClickInMultibuffer::Open => {
543 if modifiers.alt {
544 // if double click is made with alt, pretend it's a regular double click without opening and alt,
545 // and run the selection logic.
546 modifiers.alt = false;
547 } else {
548 let scroll_position_row =
549 position_map.scroll_pixel_position.y / position_map.line_height;
550 let display_row = (((event.position - gutter_hitbox.bounds.origin).y
551 + position_map.scroll_pixel_position.y)
552 / position_map.line_height)
553 as u32;
554 let multi_buffer_row = position_map
555 .snapshot
556 .display_point_to_point(
557 DisplayPoint::new(DisplayRow(display_row), 0),
558 Bias::Right,
559 )
560 .row;
561 let line_offset_from_top = display_row - scroll_position_row as u32;
562 // if double click is made without alt, open the corresponding excerp
563 editor.open_excerpts_common(
564 Some(JumpData::MultiBufferRow {
565 row: MultiBufferRow(multi_buffer_row),
566 line_offset_from_top,
567 }),
568 false,
569 cx,
570 );
571 return;
572 }
573 }
574 }
575 }
576
577 let point_for_position =
578 position_map.point_for_position(text_hitbox.bounds, event.position);
579 let position = point_for_position.previous_valid;
580 if modifiers.shift && modifiers.alt {
581 editor.select(
582 SelectPhase::BeginColumnar {
583 position,
584 reset: false,
585 goal_column: point_for_position.exact_unclipped.column(),
586 },
587 cx,
588 );
589 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
590 {
591 editor.select(
592 SelectPhase::Extend {
593 position,
594 click_count,
595 },
596 cx,
597 );
598 } else {
599 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
600 let multi_cursor_modifier = match multi_cursor_setting {
601 MultiCursorModifier::Alt => modifiers.alt,
602 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
603 };
604 editor.select(
605 SelectPhase::Begin {
606 position,
607 add: multi_cursor_modifier,
608 click_count,
609 },
610 cx,
611 );
612 }
613 cx.stop_propagation();
614
615 if !is_singleton {
616 let display_row = (((event.position - gutter_hitbox.bounds.origin).y
617 + position_map.scroll_pixel_position.y)
618 / position_map.line_height) as u32;
619 let multi_buffer_row = position_map
620 .snapshot
621 .display_point_to_point(DisplayPoint::new(DisplayRow(display_row), 0), Bias::Right)
622 .row;
623 if line_numbers
624 .get(&MultiBufferRow(multi_buffer_row))
625 .and_then(|line_number| line_number.hitbox.as_ref())
626 .is_some_and(|hitbox| hitbox.contains(&event.position))
627 {
628 let scroll_position_row =
629 position_map.scroll_pixel_position.y / position_map.line_height;
630 let line_offset_from_top = display_row - scroll_position_row as u32;
631
632 editor.open_excerpts_common(
633 Some(JumpData::MultiBufferRow {
634 row: MultiBufferRow(multi_buffer_row),
635 line_offset_from_top,
636 }),
637 modifiers.alt,
638 cx,
639 );
640 cx.stop_propagation();
641 }
642 }
643 }
644
645 fn mouse_right_down(
646 editor: &mut Editor,
647 event: &MouseDownEvent,
648 position_map: &PositionMap,
649 text_hitbox: &Hitbox,
650 cx: &mut ViewContext<Editor>,
651 ) {
652 if !text_hitbox.is_hovered(cx) {
653 return;
654 }
655 let point_for_position =
656 position_map.point_for_position(text_hitbox.bounds, event.position);
657 mouse_context_menu::deploy_context_menu(
658 editor,
659 Some(event.position),
660 point_for_position.previous_valid,
661 cx,
662 );
663 cx.stop_propagation();
664 }
665
666 fn mouse_middle_down(
667 editor: &mut Editor,
668 event: &MouseDownEvent,
669 position_map: &PositionMap,
670 text_hitbox: &Hitbox,
671 cx: &mut ViewContext<Editor>,
672 ) {
673 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
674 return;
675 }
676
677 let point_for_position =
678 position_map.point_for_position(text_hitbox.bounds, event.position);
679 let position = point_for_position.previous_valid;
680
681 editor.select(
682 SelectPhase::BeginColumnar {
683 position,
684 reset: true,
685 goal_column: point_for_position.exact_unclipped.column(),
686 },
687 cx,
688 );
689 }
690
691 fn mouse_up(
692 editor: &mut Editor,
693 event: &MouseUpEvent,
694 position_map: &PositionMap,
695 text_hitbox: &Hitbox,
696 cx: &mut ViewContext<Editor>,
697 ) {
698 let end_selection = editor.has_pending_selection();
699 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
700
701 if end_selection {
702 editor.select(SelectPhase::End, cx);
703 }
704
705 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
706 let multi_cursor_modifier = match multi_cursor_setting {
707 MultiCursorModifier::Alt => event.modifiers.secondary(),
708 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
709 };
710
711 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
712 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
713 editor.handle_click_hovered_link(point, event.modifiers, cx);
714
715 cx.stop_propagation();
716 } else if end_selection && pending_nonempty_selections {
717 cx.stop_propagation();
718 } else if cfg!(any(target_os = "linux", target_os = "freebsd"))
719 && event.button == MouseButton::Middle
720 {
721 if !text_hitbox.is_hovered(cx) || editor.read_only(cx) {
722 return;
723 }
724
725 #[cfg(any(target_os = "linux", target_os = "freebsd"))]
726 if EditorSettings::get_global(cx).middle_click_paste {
727 if let Some(text) = cx.read_from_primary().and_then(|item| item.text()) {
728 let point_for_position =
729 position_map.point_for_position(text_hitbox.bounds, event.position);
730 let position = point_for_position.previous_valid;
731
732 editor.select(
733 SelectPhase::Begin {
734 position,
735 add: false,
736 click_count: 1,
737 },
738 cx,
739 );
740 editor.insert(&text, cx);
741 }
742 cx.stop_propagation()
743 }
744 }
745 }
746
747 fn mouse_dragged(
748 editor: &mut Editor,
749 event: &MouseMoveEvent,
750 position_map: &PositionMap,
751 text_bounds: Bounds<Pixels>,
752 cx: &mut ViewContext<Editor>,
753 ) {
754 if !editor.has_pending_selection() {
755 return;
756 }
757
758 let point_for_position = position_map.point_for_position(text_bounds, event.position);
759 let mut scroll_delta = gpui::Point::<f32>::default();
760 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
761 let top = text_bounds.origin.y + vertical_margin;
762 let bottom = text_bounds.bottom_left().y - vertical_margin;
763 if event.position.y < top {
764 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
765 }
766 if event.position.y > bottom {
767 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
768 }
769
770 // We need horizontal width of text
771 let style = editor.style.clone().unwrap_or_default();
772 let font_id = cx.text_system().resolve_font(&style.text.font());
773 let font_size = style.text.font_size.to_pixels(cx.rem_size());
774 let em_width = cx
775 .text_system()
776 .typographic_bounds(font_id, font_size, 'm')
777 .unwrap()
778 .size
779 .width;
780
781 let scroll_margin_x = EditorSettings::get_global(cx).horizontal_scroll_margin;
782
783 let scroll_space: Pixels = scroll_margin_x * em_width;
784
785 let left = text_bounds.origin.x + scroll_space;
786 let right = text_bounds.top_right().x - scroll_space;
787
788 if event.position.x < left {
789 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
790 }
791 if event.position.x > right {
792 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
793 }
794
795 editor.select(
796 SelectPhase::Update {
797 position: point_for_position.previous_valid,
798 goal_column: point_for_position.exact_unclipped.column(),
799 scroll_delta,
800 },
801 cx,
802 );
803 }
804
805 fn mouse_moved(
806 editor: &mut Editor,
807 event: &MouseMoveEvent,
808 position_map: &PositionMap,
809 text_hitbox: &Hitbox,
810 gutter_hitbox: &Hitbox,
811 cx: &mut ViewContext<Editor>,
812 ) {
813 let modifiers = event.modifiers;
814 let gutter_hovered = gutter_hitbox.is_hovered(cx);
815 editor.set_gutter_hovered(gutter_hovered, cx);
816
817 // Don't trigger hover popover if mouse is hovering over context menu
818 if text_hitbox.is_hovered(cx) {
819 let point_for_position =
820 position_map.point_for_position(text_hitbox.bounds, event.position);
821
822 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
823
824 if let Some(point) = point_for_position.as_valid() {
825 let anchor = position_map
826 .snapshot
827 .buffer_snapshot
828 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
829 hover_at(editor, Some(anchor), cx);
830 Self::update_visible_cursor(editor, point, position_map, cx);
831 } else {
832 hover_at(editor, None, cx);
833 }
834 } else {
835 editor.hide_hovered_link(cx);
836 hover_at(editor, None, cx);
837 if gutter_hovered {
838 cx.stop_propagation();
839 }
840 }
841 }
842
843 fn update_visible_cursor(
844 editor: &mut Editor,
845 point: DisplayPoint,
846 position_map: &PositionMap,
847 cx: &mut ViewContext<Editor>,
848 ) {
849 let snapshot = &position_map.snapshot;
850 let Some(hub) = editor.collaboration_hub() else {
851 return;
852 };
853 let start = snapshot.display_snapshot.clip_point(
854 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
855 Bias::Left,
856 );
857 let end = snapshot.display_snapshot.clip_point(
858 DisplayPoint::new(
859 point.row(),
860 (point.column() + 1).min(snapshot.line_len(point.row())),
861 ),
862 Bias::Right,
863 );
864
865 let range = snapshot
866 .buffer_snapshot
867 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
868 ..snapshot
869 .buffer_snapshot
870 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
871
872 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
873 return;
874 };
875 let key = crate::HoveredCursor {
876 replica_id: selection.replica_id,
877 selection_id: selection.selection.id,
878 };
879 editor.hovered_cursors.insert(
880 key.clone(),
881 cx.spawn(|editor, mut cx| async move {
882 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
883 editor
884 .update(&mut cx, |editor, cx| {
885 editor.hovered_cursors.remove(&key);
886 cx.notify();
887 })
888 .ok();
889 }),
890 );
891 cx.notify()
892 }
893
894 #[allow(clippy::too_many_arguments)]
895 fn layout_selections(
896 &self,
897 start_anchor: Anchor,
898 end_anchor: Anchor,
899 local_selections: &[Selection<Point>],
900 snapshot: &EditorSnapshot,
901 start_row: DisplayRow,
902 end_row: DisplayRow,
903 cx: &mut WindowContext,
904 ) -> (
905 Vec<(PlayerColor, Vec<SelectionLayout>)>,
906 BTreeMap<DisplayRow, bool>,
907 Option<DisplayPoint>,
908 ) {
909 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
910 let mut active_rows = BTreeMap::new();
911 let mut newest_selection_head = None;
912 self.editor.update(cx, |editor, cx| {
913 if editor.show_local_selections {
914 let mut layouts = Vec::new();
915 let newest = editor.selections.newest(cx);
916 for selection in local_selections.iter().cloned() {
917 let is_empty = selection.start == selection.end;
918 let is_newest = selection == newest;
919
920 let layout = SelectionLayout::new(
921 selection,
922 editor.selections.line_mode,
923 editor.cursor_shape,
924 &snapshot.display_snapshot,
925 is_newest,
926 editor.leader_peer_id.is_none(),
927 None,
928 );
929 if is_newest {
930 newest_selection_head = Some(layout.head);
931 }
932
933 for row in cmp::max(layout.active_rows.start.0, start_row.0)
934 ..=cmp::min(layout.active_rows.end.0, end_row.0)
935 {
936 let contains_non_empty_selection =
937 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
938 *contains_non_empty_selection |= !is_empty;
939 }
940 layouts.push(layout);
941 }
942
943 let player = if editor.read_only(cx) {
944 cx.theme().players().read_only()
945 } else {
946 self.style.local_player
947 };
948
949 selections.push((player, layouts));
950 }
951
952 if let Some(collaboration_hub) = &editor.collaboration_hub {
953 // When following someone, render the local selections in their color.
954 if let Some(leader_id) = editor.leader_peer_id {
955 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id)
956 {
957 if let Some(participant_index) = collaboration_hub
958 .user_participant_indices(cx)
959 .get(&collaborator.user_id)
960 {
961 if let Some((local_selection_style, _)) = selections.first_mut() {
962 *local_selection_style = cx
963 .theme()
964 .players()
965 .color_for_participant(participant_index.0);
966 }
967 }
968 }
969 }
970
971 let mut remote_selections = HashMap::default();
972 for selection in snapshot.remote_selections_in_range(
973 &(start_anchor..end_anchor),
974 collaboration_hub.as_ref(),
975 cx,
976 ) {
977 let selection_style =
978 Self::get_participant_color(selection.participant_index, cx);
979
980 // Don't re-render the leader's selections, since the local selections
981 // match theirs.
982 if Some(selection.peer_id) == editor.leader_peer_id {
983 continue;
984 }
985 let key = HoveredCursor {
986 replica_id: selection.replica_id,
987 selection_id: selection.selection.id,
988 };
989
990 let is_shown =
991 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
992
993 remote_selections
994 .entry(selection.replica_id)
995 .or_insert((selection_style, Vec::new()))
996 .1
997 .push(SelectionLayout::new(
998 selection.selection,
999 selection.line_mode,
1000 selection.cursor_shape,
1001 &snapshot.display_snapshot,
1002 false,
1003 false,
1004 if is_shown { selection.user_name } else { None },
1005 ));
1006 }
1007
1008 selections.extend(remote_selections.into_values());
1009 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
1010 let player = if editor.read_only(cx) {
1011 cx.theme().players().read_only()
1012 } else {
1013 self.style.local_player
1014 };
1015 let layouts = snapshot
1016 .buffer_snapshot
1017 .selections_in_range(&(start_anchor..end_anchor), true)
1018 .map(move |(_, line_mode, cursor_shape, selection)| {
1019 SelectionLayout::new(
1020 selection,
1021 line_mode,
1022 cursor_shape,
1023 &snapshot.display_snapshot,
1024 false,
1025 false,
1026 None,
1027 )
1028 })
1029 .collect::<Vec<_>>();
1030 selections.push((player, layouts));
1031 }
1032 });
1033 (selections, active_rows, newest_selection_head)
1034 }
1035
1036 fn collect_cursors(
1037 &self,
1038 snapshot: &EditorSnapshot,
1039 cx: &mut WindowContext,
1040 ) -> Vec<(DisplayPoint, Hsla)> {
1041 let editor = self.editor.read(cx);
1042 let mut cursors = Vec::new();
1043 let mut skip_local = false;
1044 let mut add_cursor = |anchor: Anchor, color| {
1045 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
1046 };
1047 // Remote cursors
1048 if let Some(collaboration_hub) = &editor.collaboration_hub {
1049 for remote_selection in snapshot.remote_selections_in_range(
1050 &(Anchor::min()..Anchor::max()),
1051 collaboration_hub.deref(),
1052 cx,
1053 ) {
1054 let color = Self::get_participant_color(remote_selection.participant_index, cx);
1055 add_cursor(remote_selection.selection.head(), color.cursor);
1056 if Some(remote_selection.peer_id) == editor.leader_peer_id {
1057 skip_local = true;
1058 }
1059 }
1060 }
1061 // Local cursors
1062 if !skip_local {
1063 let color = cx.theme().players().local().cursor;
1064 editor.selections.disjoint.iter().for_each(|selection| {
1065 add_cursor(selection.head(), color);
1066 });
1067 if let Some(ref selection) = editor.selections.pending_anchor() {
1068 add_cursor(selection.head(), color);
1069 }
1070 }
1071 cursors
1072 }
1073
1074 #[allow(clippy::too_many_arguments)]
1075 fn layout_visible_cursors(
1076 &self,
1077 snapshot: &EditorSnapshot,
1078 selections: &[(PlayerColor, Vec<SelectionLayout>)],
1079 block_start_rows: &HashSet<DisplayRow>,
1080 visible_display_row_range: Range<DisplayRow>,
1081 line_layouts: &[LineWithInvisibles],
1082 text_hitbox: &Hitbox,
1083 content_origin: gpui::Point<Pixels>,
1084 scroll_position: gpui::Point<f32>,
1085 scroll_pixel_position: gpui::Point<Pixels>,
1086 line_height: Pixels,
1087 em_width: Pixels,
1088 em_advance: Pixels,
1089 autoscroll_containing_element: bool,
1090 cx: &mut WindowContext,
1091 ) -> Vec<CursorLayout> {
1092 let mut autoscroll_bounds = None;
1093 let cursor_layouts = self.editor.update(cx, |editor, cx| {
1094 let mut cursors = Vec::new();
1095 for (player_color, selections) in selections {
1096 for selection in selections {
1097 let cursor_position = selection.head;
1098
1099 let in_range = visible_display_row_range.contains(&cursor_position.row());
1100 if (selection.is_local && !editor.show_local_cursors(cx))
1101 || !in_range
1102 || block_start_rows.contains(&cursor_position.row())
1103 {
1104 continue;
1105 }
1106
1107 let cursor_row_layout = &line_layouts
1108 [cursor_position.row().minus(visible_display_row_range.start) as usize];
1109 let cursor_column = cursor_position.column() as usize;
1110
1111 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1112 let mut block_width =
1113 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1114 if block_width == Pixels::ZERO {
1115 block_width = em_advance;
1116 }
1117 let block_text = if let CursorShape::Block = selection.cursor_shape {
1118 snapshot
1119 .grapheme_at(cursor_position)
1120 .or_else(|| {
1121 if cursor_column == 0 {
1122 snapshot.placeholder_text().and_then(|s| {
1123 s.graphemes(true).next().map(|s| s.to_string().into())
1124 })
1125 } else {
1126 None
1127 }
1128 })
1129 .and_then(|text| {
1130 let len = text.len();
1131
1132 let font = cursor_row_layout
1133 .font_id_for_index(cursor_column)
1134 .and_then(|cursor_font_id| {
1135 cx.text_system().get_font_for_id(cursor_font_id)
1136 })
1137 .unwrap_or(self.style.text.font());
1138
1139 // Invert the text color for the block cursor. Ensure that the text
1140 // color is opaque enough to be visible against the background color.
1141 //
1142 // 0.75 is an arbitrary threshold to determine if the background color is
1143 // opaque enough to use as a text color.
1144 //
1145 // TODO: In the future we should ensure themes have a `text_inverse` color.
1146 let color = if cx.theme().colors().editor_background.a < 0.75 {
1147 match cx.theme().appearance {
1148 Appearance::Dark => Hsla::black(),
1149 Appearance::Light => Hsla::white(),
1150 }
1151 } else {
1152 cx.theme().colors().editor_background
1153 };
1154
1155 cx.text_system()
1156 .shape_line(
1157 text,
1158 cursor_row_layout.font_size,
1159 &[TextRun {
1160 len,
1161 font,
1162 color,
1163 background_color: None,
1164 strikethrough: None,
1165 underline: None,
1166 }],
1167 )
1168 .log_err()
1169 })
1170 } else {
1171 None
1172 };
1173
1174 let x = cursor_character_x - scroll_pixel_position.x;
1175 let y = (cursor_position.row().as_f32()
1176 - scroll_pixel_position.y / line_height)
1177 * line_height;
1178 if selection.is_newest {
1179 editor.pixel_position_of_newest_cursor = Some(point(
1180 text_hitbox.origin.x + x + block_width / 2.,
1181 text_hitbox.origin.y + y + line_height / 2.,
1182 ));
1183
1184 if autoscroll_containing_element {
1185 let top = text_hitbox.origin.y
1186 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1187 * line_height;
1188 let left = text_hitbox.origin.x
1189 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1190 .max(0.)
1191 * em_width;
1192
1193 let bottom = text_hitbox.origin.y
1194 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1195 * line_height;
1196 let right = text_hitbox.origin.x
1197 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1198 * em_width;
1199
1200 autoscroll_bounds =
1201 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1202 }
1203 }
1204
1205 let mut cursor = CursorLayout {
1206 color: player_color.cursor,
1207 block_width,
1208 origin: point(x, y),
1209 line_height,
1210 shape: selection.cursor_shape,
1211 block_text,
1212 cursor_name: None,
1213 };
1214 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1215 string: name,
1216 color: self.style.background,
1217 is_top_row: cursor_position.row().0 == 0,
1218 });
1219 cursor.layout(content_origin, cursor_name, cx);
1220 cursors.push(cursor);
1221 }
1222 }
1223 cursors
1224 });
1225
1226 if let Some(bounds) = autoscroll_bounds {
1227 cx.request_autoscroll(bounds);
1228 }
1229
1230 cursor_layouts
1231 }
1232
1233 fn layout_scrollbars(
1234 &self,
1235 snapshot: &EditorSnapshot,
1236 scrollbar_range_data: ScrollbarRangeData,
1237 scroll_position: gpui::Point<f32>,
1238 non_visible_cursors: bool,
1239 cx: &mut WindowContext,
1240 ) -> AxisPair<Option<ScrollbarLayout>> {
1241 let letter_size = scrollbar_range_data.letter_size;
1242 let text_units_per_page = axis_pair(
1243 scrollbar_range_data.scrollbar_bounds.size.width / letter_size.width,
1244 scrollbar_range_data.scrollbar_bounds.size.height / letter_size.height,
1245 );
1246
1247 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1248 let show_scrollbars = self.editor.read(cx).show_scrollbars
1249 && match scrollbar_settings.show {
1250 ShowScrollbar::Auto => {
1251 let editor = self.editor.read(cx);
1252 let is_singleton = editor.is_singleton(cx);
1253 // Git
1254 (is_singleton && scrollbar_settings.git_diff && !snapshot.diff_map.is_empty())
1255 ||
1256 // Buffer Search Results
1257 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1258 ||
1259 // Selected Symbol Occurrences
1260 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1261 ||
1262 // Diagnostics
1263 (is_singleton && scrollbar_settings.diagnostics != ScrollbarDiagnostics::None && snapshot.buffer_snapshot.has_diagnostics())
1264 ||
1265 // Cursors out of sight
1266 non_visible_cursors
1267 ||
1268 // Scrollmanager
1269 editor.scroll_manager.scrollbars_visible()
1270 }
1271 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1272 ShowScrollbar::Always => true,
1273 ShowScrollbar::Never => false,
1274 };
1275
1276 let axes: AxisPair<bool> = scrollbar_settings.axes.into();
1277
1278 if snapshot.mode != EditorMode::Full {
1279 return axis_pair(None, None);
1280 }
1281
1282 let visible_range = axis_pair(
1283 axes.horizontal
1284 .then(|| scroll_position.x..scroll_position.x + text_units_per_page.horizontal),
1285 axes.vertical
1286 .then(|| scroll_position.y..scroll_position.y + text_units_per_page.vertical),
1287 );
1288
1289 // If a drag took place after we started dragging the scrollbar,
1290 // cancel the scrollbar drag.
1291 if cx.has_active_drag() {
1292 self.editor.update(cx, |editor, cx| {
1293 editor
1294 .scroll_manager
1295 .set_is_dragging_scrollbar(Axis::Horizontal, false, cx);
1296 editor
1297 .scroll_manager
1298 .set_is_dragging_scrollbar(Axis::Vertical, false, cx);
1299 });
1300 }
1301
1302 let text_bounds = scrollbar_range_data.scrollbar_bounds;
1303
1304 let track_bounds = axis_pair(
1305 axes.horizontal.then(|| {
1306 Bounds::from_corners(
1307 point(
1308 text_bounds.bottom_left().x,
1309 text_bounds.bottom_left().y - self.style.scrollbar_width,
1310 ),
1311 point(
1312 text_bounds.bottom_right().x
1313 - if axes.vertical {
1314 self.style.scrollbar_width
1315 } else {
1316 px(0.)
1317 },
1318 text_bounds.bottom_right().y,
1319 ),
1320 )
1321 }),
1322 axes.vertical.then(|| {
1323 Bounds::from_corners(
1324 point(self.scrollbar_left(&text_bounds), text_bounds.origin.y),
1325 text_bounds.bottom_right(),
1326 )
1327 }),
1328 );
1329
1330 let scroll_range_size = scrollbar_range_data.scroll_range.size;
1331 let total_text_units = axis_pair(
1332 Some(scroll_range_size.width / letter_size.width),
1333 Some(scroll_range_size.height / letter_size.height),
1334 );
1335
1336 let thumb_size = axis_pair(
1337 total_text_units
1338 .horizontal
1339 .zip(track_bounds.horizontal)
1340 .and_then(|(total_text_units_x, track_bounds_x)| {
1341 if text_units_per_page.horizontal >= total_text_units_x {
1342 return None;
1343 }
1344
1345 let thumb_percent =
1346 (text_units_per_page.horizontal / total_text_units_x).min(1.);
1347
1348 Some(track_bounds_x.size.width * thumb_percent)
1349 }),
1350 total_text_units.vertical.zip(track_bounds.vertical).map(
1351 |(total_text_units_y, track_bounds_y)| {
1352 let thumb_percent = (text_units_per_page.vertical / total_text_units_y).min(1.);
1353
1354 track_bounds_y.size.height * thumb_percent
1355 },
1356 ),
1357 );
1358
1359 // NOTE: Space not taken by track bounds divided by text units not on screen
1360 let text_unit_size = axis_pair(
1361 thumb_size
1362 .horizontal
1363 .zip(track_bounds.horizontal)
1364 .zip(total_text_units.horizontal)
1365 .map(|((thumb_size, track_bounds), total_text_units)| {
1366 (track_bounds.size.width - thumb_size)
1367 / (total_text_units - text_units_per_page.horizontal).max(0.)
1368 }),
1369 thumb_size
1370 .vertical
1371 .zip(track_bounds.vertical)
1372 .zip(total_text_units.vertical)
1373 .map(|((thumb_size, track_bounds), total_text_units)| {
1374 (track_bounds.size.height - thumb_size)
1375 / (total_text_units - text_units_per_page.vertical).max(0.)
1376 }),
1377 );
1378
1379 let horizontal_scrollbar = track_bounds
1380 .horizontal
1381 .zip(visible_range.horizontal)
1382 .zip(text_unit_size.horizontal)
1383 .zip(thumb_size.horizontal)
1384 .map(
1385 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1386 hitbox: cx.insert_hitbox(track_bounds, false),
1387 visible_range,
1388 text_unit_size,
1389 visible: show_scrollbars,
1390 thumb_size,
1391 axis: Axis::Horizontal,
1392 },
1393 );
1394
1395 let vertical_scrollbar = track_bounds
1396 .vertical
1397 .zip(visible_range.vertical)
1398 .zip(text_unit_size.vertical)
1399 .zip(thumb_size.vertical)
1400 .map(
1401 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1402 hitbox: cx.insert_hitbox(track_bounds, false),
1403 visible_range,
1404 text_unit_size,
1405 visible: show_scrollbars,
1406 thumb_size,
1407 axis: Axis::Vertical,
1408 },
1409 );
1410
1411 axis_pair(horizontal_scrollbar, vertical_scrollbar)
1412 }
1413
1414 #[allow(clippy::too_many_arguments)]
1415 fn prepaint_crease_toggles(
1416 &self,
1417 crease_toggles: &mut [Option<AnyElement>],
1418 line_height: Pixels,
1419 gutter_dimensions: &GutterDimensions,
1420 gutter_settings: crate::editor_settings::Gutter,
1421 scroll_pixel_position: gpui::Point<Pixels>,
1422 gutter_hitbox: &Hitbox,
1423 cx: &mut WindowContext,
1424 ) {
1425 for (ix, crease_toggle) in crease_toggles.iter_mut().enumerate() {
1426 if let Some(crease_toggle) = crease_toggle {
1427 debug_assert!(gutter_settings.folds);
1428 let available_space = size(
1429 AvailableSpace::MinContent,
1430 AvailableSpace::Definite(line_height * 0.55),
1431 );
1432 let crease_toggle_size = crease_toggle.layout_as_root(available_space, cx);
1433
1434 let position = point(
1435 gutter_dimensions.width - gutter_dimensions.right_padding,
1436 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1437 );
1438 let centering_offset = point(
1439 (gutter_dimensions.fold_area_width() - crease_toggle_size.width) / 2.,
1440 (line_height - crease_toggle_size.height) / 2.,
1441 );
1442 let origin = gutter_hitbox.origin + position + centering_offset;
1443 crease_toggle.prepaint_as_root(origin, available_space, cx);
1444 }
1445 }
1446 }
1447
1448 #[allow(clippy::too_many_arguments)]
1449 fn prepaint_crease_trailers(
1450 &self,
1451 trailers: Vec<Option<AnyElement>>,
1452 lines: &[LineWithInvisibles],
1453 line_height: Pixels,
1454 content_origin: gpui::Point<Pixels>,
1455 scroll_pixel_position: gpui::Point<Pixels>,
1456 em_width: Pixels,
1457 cx: &mut WindowContext,
1458 ) -> Vec<Option<CreaseTrailerLayout>> {
1459 trailers
1460 .into_iter()
1461 .enumerate()
1462 .map(|(ix, element)| {
1463 let mut element = element?;
1464 let available_space = size(
1465 AvailableSpace::MinContent,
1466 AvailableSpace::Definite(line_height),
1467 );
1468 let size = element.layout_as_root(available_space, cx);
1469
1470 let line = &lines[ix];
1471 let padding = if line.width == Pixels::ZERO {
1472 Pixels::ZERO
1473 } else {
1474 4. * em_width
1475 };
1476 let position = point(
1477 scroll_pixel_position.x + line.width + padding,
1478 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1479 );
1480 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1481 let origin = content_origin + position + centering_offset;
1482 element.prepaint_as_root(origin, available_space, cx);
1483 Some(CreaseTrailerLayout {
1484 element,
1485 bounds: Bounds::new(origin, size),
1486 })
1487 })
1488 .collect()
1489 }
1490
1491 // Folds contained in a hunk are ignored apart from shrinking visual size
1492 // If a fold contains any hunks then that fold line is marked as modified
1493 fn layout_gutter_git_hunks(
1494 &self,
1495 line_height: Pixels,
1496 gutter_hitbox: &Hitbox,
1497 display_rows: Range<DisplayRow>,
1498 anchor_range: Range<Anchor>,
1499 snapshot: &EditorSnapshot,
1500 cx: &mut WindowContext,
1501 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1502 let buffer_snapshot = &snapshot.buffer_snapshot;
1503 let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(snapshot);
1504 let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(snapshot);
1505
1506 let git_gutter_setting = ProjectSettings::get_global(cx)
1507 .git
1508 .git_gutter
1509 .unwrap_or_default();
1510
1511 self.editor.update(cx, |editor, cx| {
1512 let expanded_hunks = &editor.diff_map.hunks;
1513 let expanded_hunks_start_ix = expanded_hunks
1514 .binary_search_by(|hunk| {
1515 hunk.hunk_range
1516 .end
1517 .cmp(&anchor_range.start, &buffer_snapshot)
1518 .then(Ordering::Less)
1519 })
1520 .unwrap_err();
1521 let mut expanded_hunks = expanded_hunks[expanded_hunks_start_ix..].iter().peekable();
1522
1523 let mut display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)> = editor
1524 .diff_map
1525 .snapshot
1526 .diff_hunks_in_range(buffer_start..buffer_end, &buffer_snapshot)
1527 .filter_map(|hunk| {
1528 let display_hunk = diff_hunk_to_display(&hunk, snapshot);
1529
1530 if let DisplayDiffHunk::Unfolded {
1531 multi_buffer_range,
1532 status,
1533 ..
1534 } = &display_hunk
1535 {
1536 let mut is_expanded = false;
1537 while let Some(expanded_hunk) = expanded_hunks.peek() {
1538 match expanded_hunk
1539 .hunk_range
1540 .start
1541 .cmp(&multi_buffer_range.start, &buffer_snapshot)
1542 {
1543 Ordering::Less => {
1544 expanded_hunks.next();
1545 }
1546 Ordering::Equal => {
1547 is_expanded = true;
1548 break;
1549 }
1550 Ordering::Greater => {
1551 break;
1552 }
1553 }
1554 }
1555 match status {
1556 DiffHunkStatus::Added => {}
1557 DiffHunkStatus::Modified => {}
1558 DiffHunkStatus::Removed => {
1559 if is_expanded {
1560 return None;
1561 }
1562 }
1563 }
1564 }
1565
1566 Some(display_hunk)
1567 })
1568 .dedup()
1569 .map(|hunk| (hunk, None))
1570 .collect();
1571
1572 if let GitGutterSetting::TrackedFiles = git_gutter_setting {
1573 for (hunk, hitbox) in &mut display_hunks {
1574 if let DisplayDiffHunk::Unfolded { .. } = hunk {
1575 let hunk_bounds = Self::diff_hunk_bounds(
1576 snapshot,
1577 line_height,
1578 gutter_hitbox.bounds,
1579 &hunk,
1580 );
1581 *hitbox = Some(cx.insert_hitbox(hunk_bounds, true));
1582 };
1583 }
1584 }
1585
1586 display_hunks
1587 })
1588 }
1589
1590 #[allow(clippy::too_many_arguments)]
1591 fn layout_inline_blame(
1592 &self,
1593 display_row: DisplayRow,
1594 display_snapshot: &DisplaySnapshot,
1595 line_layout: &LineWithInvisibles,
1596 crease_trailer: Option<&CreaseTrailerLayout>,
1597 em_width: Pixels,
1598 content_origin: gpui::Point<Pixels>,
1599 scroll_pixel_position: gpui::Point<Pixels>,
1600 line_height: Pixels,
1601 cx: &mut WindowContext,
1602 ) -> Option<AnyElement> {
1603 if !self
1604 .editor
1605 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1606 {
1607 return None;
1608 }
1609
1610 let workspace = self
1611 .editor
1612 .read(cx)
1613 .workspace
1614 .as_ref()
1615 .map(|(w, _)| w.clone());
1616
1617 let display_point = DisplayPoint::new(display_row, 0);
1618 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1619
1620 let blame = self.editor.read(cx).blame.clone()?;
1621 let blame_entry = blame
1622 .update(cx, |blame, cx| {
1623 blame.blame_for_rows([Some(buffer_row)], cx).next()
1624 })
1625 .flatten()?;
1626
1627 let mut element =
1628 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1629
1630 let start_y = content_origin.y
1631 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1632
1633 let start_x = {
1634 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1635
1636 let line_end = if let Some(crease_trailer) = crease_trailer {
1637 crease_trailer.bounds.right()
1638 } else {
1639 content_origin.x - scroll_pixel_position.x + line_layout.width
1640 };
1641 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1642
1643 let min_column_in_pixels = ProjectSettings::get_global(cx)
1644 .git
1645 .inline_blame
1646 .and_then(|settings| settings.min_column)
1647 .map(|col| self.column_pixels(col as usize, cx))
1648 .unwrap_or(px(0.));
1649 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1650
1651 cmp::max(padded_line_end, min_start)
1652 };
1653
1654 let absolute_offset = point(start_x, start_y);
1655 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1656
1657 Some(element)
1658 }
1659
1660 #[allow(clippy::too_many_arguments)]
1661 fn layout_blame_entries(
1662 &self,
1663 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1664 em_width: Pixels,
1665 scroll_position: gpui::Point<f32>,
1666 line_height: Pixels,
1667 gutter_hitbox: &Hitbox,
1668 max_width: Option<Pixels>,
1669 cx: &mut WindowContext,
1670 ) -> Option<Vec<AnyElement>> {
1671 if !self
1672 .editor
1673 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1674 {
1675 return None;
1676 }
1677
1678 let blame = self.editor.read(cx).blame.clone()?;
1679 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1680 blame.blame_for_rows(buffer_rows, cx).collect()
1681 });
1682
1683 let width = if let Some(max_width) = max_width {
1684 AvailableSpace::Definite(max_width)
1685 } else {
1686 AvailableSpace::MaxContent
1687 };
1688 let scroll_top = scroll_position.y * line_height;
1689 let start_x = em_width;
1690
1691 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1692
1693 let shaped_lines = blamed_rows
1694 .into_iter()
1695 .enumerate()
1696 .flat_map(|(ix, blame_entry)| {
1697 if let Some(blame_entry) = blame_entry {
1698 let mut element = render_blame_entry(
1699 ix,
1700 &blame,
1701 blame_entry,
1702 &self.style,
1703 &mut last_used_color,
1704 self.editor.clone(),
1705 cx,
1706 );
1707
1708 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1709 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1710
1711 element.prepaint_as_root(
1712 absolute_offset,
1713 size(width, AvailableSpace::MinContent),
1714 cx,
1715 );
1716
1717 Some(element)
1718 } else {
1719 None
1720 }
1721 })
1722 .collect();
1723
1724 Some(shaped_lines)
1725 }
1726
1727 #[allow(clippy::too_many_arguments)]
1728 fn layout_indent_guides(
1729 &self,
1730 content_origin: gpui::Point<Pixels>,
1731 text_origin: gpui::Point<Pixels>,
1732 visible_buffer_range: Range<MultiBufferRow>,
1733 scroll_pixel_position: gpui::Point<Pixels>,
1734 line_height: Pixels,
1735 snapshot: &DisplaySnapshot,
1736 cx: &mut WindowContext,
1737 ) -> Option<Vec<IndentGuideLayout>> {
1738 let indent_guides = self.editor.update(cx, |editor, cx| {
1739 editor.indent_guides(visible_buffer_range, snapshot, cx)
1740 })?;
1741
1742 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1743 editor
1744 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1745 .unwrap_or_default()
1746 });
1747
1748 Some(
1749 indent_guides
1750 .into_iter()
1751 .enumerate()
1752 .filter_map(|(i, indent_guide)| {
1753 let single_indent_width =
1754 self.column_pixels(indent_guide.tab_size as usize, cx);
1755 let total_width = single_indent_width * indent_guide.depth as f32;
1756 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1757 if start_x >= text_origin.x {
1758 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1759 indent_guide.multibuffer_row_range.clone(),
1760 line_height,
1761 snapshot,
1762 );
1763
1764 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1765
1766 Some(IndentGuideLayout {
1767 origin: point(start_x, start_y),
1768 length,
1769 single_indent_width,
1770 depth: indent_guide.depth,
1771 active: active_indent_guide_indices.contains(&i),
1772 settings: indent_guide.settings,
1773 })
1774 } else {
1775 None
1776 }
1777 })
1778 .collect(),
1779 )
1780 }
1781
1782 fn calculate_indent_guide_bounds(
1783 row_range: Range<MultiBufferRow>,
1784 line_height: Pixels,
1785 snapshot: &DisplaySnapshot,
1786 ) -> (gpui::Pixels, gpui::Pixels) {
1787 let start_point = Point::new(row_range.start.0, 0);
1788 let end_point = Point::new(row_range.end.0, 0);
1789
1790 let row_range = start_point.to_display_point(snapshot).row()
1791 ..end_point.to_display_point(snapshot).row();
1792
1793 let mut prev_line = start_point;
1794 prev_line.row = prev_line.row.saturating_sub(1);
1795 let prev_line = prev_line.to_display_point(snapshot).row();
1796
1797 let mut cons_line = end_point;
1798 cons_line.row += 1;
1799 let cons_line = cons_line.to_display_point(snapshot).row();
1800
1801 let mut offset_y = row_range.start.0 as f32 * line_height;
1802 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1803
1804 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1805 if row_range.end == cons_line {
1806 length += line_height;
1807 }
1808
1809 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1810 // we want to extend the indent guide to the start of the block.
1811 let mut block_height = 0;
1812 let mut block_offset = 0;
1813 let mut found_excerpt_header = false;
1814 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1815 if matches!(block, Block::ExcerptBoundary { .. }) {
1816 found_excerpt_header = true;
1817 break;
1818 }
1819 block_offset += block.height();
1820 block_height += block.height();
1821 }
1822 if !found_excerpt_header {
1823 offset_y -= block_offset as f32 * line_height;
1824 length += block_height as f32 * line_height;
1825 }
1826
1827 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1828 // we want to ensure that the indent guide stops before the excerpt header.
1829 let mut block_height = 0;
1830 let mut found_excerpt_header = false;
1831 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1832 if matches!(block, Block::ExcerptBoundary { .. }) {
1833 found_excerpt_header = true;
1834 }
1835 block_height += block.height();
1836 }
1837 if found_excerpt_header {
1838 length -= block_height as f32 * line_height;
1839 }
1840
1841 (offset_y, length)
1842 }
1843
1844 #[allow(clippy::too_many_arguments)]
1845 fn layout_run_indicators(
1846 &self,
1847 line_height: Pixels,
1848 range: Range<DisplayRow>,
1849 scroll_pixel_position: gpui::Point<Pixels>,
1850 gutter_dimensions: &GutterDimensions,
1851 gutter_hitbox: &Hitbox,
1852 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1853 snapshot: &EditorSnapshot,
1854 cx: &mut WindowContext,
1855 ) -> Vec<AnyElement> {
1856 self.editor.update(cx, |editor, cx| {
1857 let active_task_indicator_row =
1858 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1859 deployed_from_indicator,
1860 actions,
1861 ..
1862 })) = editor.context_menu.borrow().as_ref()
1863 {
1864 actions
1865 .tasks
1866 .as_ref()
1867 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1868 .or(*deployed_from_indicator)
1869 } else {
1870 None
1871 };
1872
1873 let offset_range_start = snapshot
1874 .display_point_to_anchor(DisplayPoint::new(range.start, 0), Bias::Left)
1875 .to_offset(&snapshot.buffer_snapshot);
1876 let offset_range_end = snapshot
1877 .display_point_to_anchor(DisplayPoint::new(range.end, 0), Bias::Right)
1878 .to_offset(&snapshot.buffer_snapshot);
1879
1880 editor
1881 .tasks
1882 .iter()
1883 .filter_map(|(_, tasks)| {
1884 if tasks.offset.0 < offset_range_start || tasks.offset.0 >= offset_range_end {
1885 return None;
1886 }
1887 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1888 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1889 let buffer_folded = snapshot
1890 .buffer_snapshot
1891 .buffer_line_for_row(multibuffer_row)
1892 .map(|(buffer_snapshot, _)| buffer_snapshot.remote_id())
1893 .map(|buffer_id| editor.buffer_folded(buffer_id, cx))
1894 .unwrap_or(false);
1895 if buffer_folded {
1896 return None;
1897 }
1898
1899 if snapshot.is_line_folded(multibuffer_row) {
1900 // Skip folded indicators, unless it's the starting line of a fold.
1901 if multibuffer_row
1902 .0
1903 .checked_sub(1)
1904 .map_or(false, |previous_row| {
1905 snapshot.is_line_folded(MultiBufferRow(previous_row))
1906 })
1907 {
1908 return None;
1909 }
1910 }
1911 let display_row = multibuffer_point.to_display_point(snapshot).row();
1912 let button = editor.render_run_indicator(
1913 &self.style,
1914 Some(display_row) == active_task_indicator_row,
1915 display_row,
1916 cx,
1917 );
1918
1919 let button = prepaint_gutter_button(
1920 button,
1921 display_row,
1922 line_height,
1923 gutter_dimensions,
1924 scroll_pixel_position,
1925 gutter_hitbox,
1926 rows_with_hunk_bounds,
1927 cx,
1928 );
1929 Some(button)
1930 })
1931 .collect_vec()
1932 })
1933 }
1934
1935 #[allow(clippy::too_many_arguments)]
1936 fn layout_code_actions_indicator(
1937 &self,
1938 line_height: Pixels,
1939 newest_selection_head: DisplayPoint,
1940 scroll_pixel_position: gpui::Point<Pixels>,
1941 gutter_dimensions: &GutterDimensions,
1942 gutter_hitbox: &Hitbox,
1943 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1944 cx: &mut WindowContext,
1945 ) -> Option<AnyElement> {
1946 let mut active = false;
1947 let mut button = None;
1948 let row = newest_selection_head.row();
1949 self.editor.update(cx, |editor, cx| {
1950 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1951 deployed_from_indicator,
1952 ..
1953 })) = editor.context_menu.borrow().as_ref()
1954 {
1955 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1956 };
1957 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1958 });
1959
1960 let button = prepaint_gutter_button(
1961 button?,
1962 row,
1963 line_height,
1964 gutter_dimensions,
1965 scroll_pixel_position,
1966 gutter_hitbox,
1967 rows_with_hunk_bounds,
1968 cx,
1969 );
1970
1971 Some(button)
1972 }
1973
1974 fn get_participant_color(
1975 participant_index: Option<ParticipantIndex>,
1976 cx: &WindowContext,
1977 ) -> PlayerColor {
1978 if let Some(index) = participant_index {
1979 cx.theme().players().color_for_participant(index.0)
1980 } else {
1981 cx.theme().players().absent()
1982 }
1983 }
1984
1985 fn calculate_relative_line_numbers(
1986 &self,
1987 snapshot: &EditorSnapshot,
1988 rows: &Range<DisplayRow>,
1989 relative_to: Option<DisplayRow>,
1990 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1991 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1992 let Some(relative_to) = relative_to else {
1993 return relative_rows;
1994 };
1995
1996 let start = rows.start.min(relative_to);
1997 let end = rows.end.max(relative_to);
1998
1999 let buffer_rows = snapshot
2000 .buffer_rows(start)
2001 .take(1 + end.minus(start) as usize)
2002 .collect::<Vec<_>>();
2003
2004 let head_idx = relative_to.minus(start);
2005 let mut delta = 1;
2006 let mut i = head_idx + 1;
2007 while i < buffer_rows.len() as u32 {
2008 if buffer_rows[i as usize].is_some() {
2009 if rows.contains(&DisplayRow(i + start.0)) {
2010 relative_rows.insert(DisplayRow(i + start.0), delta);
2011 }
2012 delta += 1;
2013 }
2014 i += 1;
2015 }
2016 delta = 1;
2017 i = head_idx.min(buffer_rows.len() as u32 - 1);
2018 while i > 0 && buffer_rows[i as usize].is_none() {
2019 i -= 1;
2020 }
2021
2022 while i > 0 {
2023 i -= 1;
2024 if buffer_rows[i as usize].is_some() {
2025 if rows.contains(&DisplayRow(i + start.0)) {
2026 relative_rows.insert(DisplayRow(i + start.0), delta);
2027 }
2028 delta += 1;
2029 }
2030 }
2031
2032 relative_rows
2033 }
2034
2035 #[allow(clippy::too_many_arguments)]
2036 fn layout_line_numbers(
2037 &self,
2038 gutter_hitbox: Option<&Hitbox>,
2039 gutter_dimensions: GutterDimensions,
2040 line_height: Pixels,
2041 scroll_position: gpui::Point<f32>,
2042 rows: Range<DisplayRow>,
2043 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
2044 newest_selection_head: Option<DisplayPoint>,
2045 snapshot: &EditorSnapshot,
2046 cx: &mut WindowContext,
2047 ) -> Arc<HashMap<MultiBufferRow, LineNumberLayout>> {
2048 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
2049 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
2050 });
2051 if !include_line_numbers {
2052 return Arc::default();
2053 }
2054
2055 let (newest_selection_head, is_relative) = self.editor.update(cx, |editor, cx| {
2056 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
2057 let newest = editor.selections.newest::<Point>(cx);
2058 SelectionLayout::new(
2059 newest,
2060 editor.selections.line_mode,
2061 editor.cursor_shape,
2062 &snapshot.display_snapshot,
2063 true,
2064 true,
2065 None,
2066 )
2067 .head
2068 });
2069 let is_relative = editor.should_use_relative_line_numbers(cx);
2070 (newest_selection_head, is_relative)
2071 });
2072
2073 let relative_to = if is_relative {
2074 Some(newest_selection_head.row())
2075 } else {
2076 None
2077 };
2078 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
2079 let mut line_number = String::new();
2080 let line_numbers = buffer_rows
2081 .into_iter()
2082 .enumerate()
2083 .flat_map(|(ix, buffer_row)| {
2084 let buffer_row = buffer_row?;
2085 line_number.clear();
2086 let display_row = DisplayRow(rows.start.0 + ix as u32);
2087 let non_relative_number = buffer_row.0 + 1;
2088 let number = relative_rows
2089 .get(&display_row)
2090 .unwrap_or(&non_relative_number);
2091 write!(&mut line_number, "{number}").unwrap();
2092
2093 let color = cx.theme().colors().editor_line_number;
2094 let shaped_line = self
2095 .shape_line_number(SharedString::from(&line_number), color, cx)
2096 .log_err()?;
2097 let scroll_top = scroll_position.y * line_height;
2098 let line_origin = gutter_hitbox.map(|hitbox| {
2099 hitbox.origin
2100 + point(
2101 hitbox.size.width - shaped_line.width - gutter_dimensions.right_padding,
2102 ix as f32 * line_height - (scroll_top % line_height),
2103 )
2104 });
2105
2106 #[cfg(not(test))]
2107 let hitbox = line_origin.map(|line_origin| {
2108 cx.insert_hitbox(
2109 Bounds::new(line_origin, size(shaped_line.width, line_height)),
2110 false,
2111 )
2112 });
2113 #[cfg(test)]
2114 let hitbox = {
2115 let _ = line_origin;
2116 None
2117 };
2118
2119 let multi_buffer_row = DisplayPoint::new(display_row, 0).to_point(snapshot).row;
2120 let multi_buffer_row = MultiBufferRow(multi_buffer_row);
2121 let line_number = LineNumberLayout {
2122 shaped_line,
2123 hitbox,
2124 display_row,
2125 };
2126 Some((multi_buffer_row, line_number))
2127 })
2128 .collect();
2129 Arc::new(line_numbers)
2130 }
2131
2132 fn layout_crease_toggles(
2133 &self,
2134 rows: Range<DisplayRow>,
2135 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2136 active_rows: &BTreeMap<DisplayRow, bool>,
2137 snapshot: &EditorSnapshot,
2138 cx: &mut WindowContext,
2139 ) -> Vec<Option<AnyElement>> {
2140 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
2141 && snapshot.mode == EditorMode::Full
2142 && self.editor.read(cx).is_singleton(cx);
2143 if include_fold_statuses {
2144 buffer_rows
2145 .into_iter()
2146 .enumerate()
2147 .map(|(ix, row)| {
2148 if let Some(multibuffer_row) = row {
2149 let display_row = DisplayRow(rows.start.0 + ix as u32);
2150 let active = active_rows.contains_key(&display_row);
2151 snapshot.render_crease_toggle(
2152 multibuffer_row,
2153 active,
2154 self.editor.clone(),
2155 cx,
2156 )
2157 } else {
2158 None
2159 }
2160 })
2161 .collect()
2162 } else {
2163 Vec::new()
2164 }
2165 }
2166
2167 fn layout_crease_trailers(
2168 &self,
2169 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2170 snapshot: &EditorSnapshot,
2171 cx: &mut WindowContext,
2172 ) -> Vec<Option<AnyElement>> {
2173 buffer_rows
2174 .into_iter()
2175 .map(|row| {
2176 if let Some(multibuffer_row) = row {
2177 snapshot.render_crease_trailer(multibuffer_row, cx)
2178 } else {
2179 None
2180 }
2181 })
2182 .collect()
2183 }
2184
2185 fn layout_lines(
2186 rows: Range<DisplayRow>,
2187 snapshot: &EditorSnapshot,
2188 style: &EditorStyle,
2189 editor_width: Pixels,
2190 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2191 cx: &mut WindowContext,
2192 ) -> Vec<LineWithInvisibles> {
2193 if rows.start >= rows.end {
2194 return Vec::new();
2195 }
2196
2197 // Show the placeholder when the editor is empty
2198 if snapshot.is_empty() {
2199 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2200 let placeholder_color = cx.theme().colors().text_placeholder;
2201 let placeholder_text = snapshot.placeholder_text();
2202
2203 let placeholder_lines = placeholder_text
2204 .as_ref()
2205 .map_or("", AsRef::as_ref)
2206 .split('\n')
2207 .skip(rows.start.0 as usize)
2208 .chain(iter::repeat(""))
2209 .take(rows.len());
2210 placeholder_lines
2211 .filter_map(move |line| {
2212 let run = TextRun {
2213 len: line.len(),
2214 font: style.text.font(),
2215 color: placeholder_color,
2216 background_color: None,
2217 underline: Default::default(),
2218 strikethrough: None,
2219 };
2220 cx.text_system()
2221 .shape_line(line.to_string().into(), font_size, &[run])
2222 .log_err()
2223 })
2224 .map(|line| LineWithInvisibles {
2225 width: line.width,
2226 len: line.len,
2227 fragments: smallvec![LineFragment::Text(line)],
2228 invisibles: Vec::new(),
2229 font_size,
2230 })
2231 .collect()
2232 } else {
2233 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
2234 LineWithInvisibles::from_chunks(
2235 chunks,
2236 &style,
2237 MAX_LINE_LEN,
2238 rows.len(),
2239 snapshot.mode,
2240 editor_width,
2241 is_row_soft_wrapped,
2242 cx,
2243 )
2244 }
2245 }
2246
2247 fn prepaint_lines(
2248 &self,
2249 start_row: DisplayRow,
2250 line_layouts: &mut [LineWithInvisibles],
2251 line_height: Pixels,
2252 scroll_pixel_position: gpui::Point<Pixels>,
2253 content_origin: gpui::Point<Pixels>,
2254 cx: &mut WindowContext,
2255 ) -> SmallVec<[AnyElement; 1]> {
2256 let mut line_elements = SmallVec::new();
2257 for (ix, line) in line_layouts.iter_mut().enumerate() {
2258 let row = start_row + DisplayRow(ix as u32);
2259 line.prepaint(
2260 line_height,
2261 scroll_pixel_position,
2262 row,
2263 content_origin,
2264 &mut line_elements,
2265 cx,
2266 );
2267 }
2268 line_elements
2269 }
2270
2271 #[allow(clippy::too_many_arguments)]
2272 fn render_block(
2273 &self,
2274 block: &Block,
2275 available_width: AvailableSpace,
2276 block_id: BlockId,
2277 block_row_start: DisplayRow,
2278 snapshot: &EditorSnapshot,
2279 text_x: Pixels,
2280 rows: &Range<DisplayRow>,
2281 line_layouts: &[LineWithInvisibles],
2282 gutter_dimensions: &GutterDimensions,
2283 line_height: Pixels,
2284 em_width: Pixels,
2285 text_hitbox: &Hitbox,
2286 editor_width: Pixels,
2287 scroll_width: &mut Pixels,
2288 resized_blocks: &mut HashMap<CustomBlockId, u32>,
2289 selections: &[Selection<Point>],
2290 selected_buffer_ids: &Vec<BufferId>,
2291 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2292 sticky_header_excerpt_id: Option<ExcerptId>,
2293 cx: &mut WindowContext,
2294 ) -> (AnyElement, Size<Pixels>) {
2295 let mut element = match block {
2296 Block::Custom(block) => {
2297 let block_start = block.start().to_point(&snapshot.buffer_snapshot);
2298 let block_end = block.end().to_point(&snapshot.buffer_snapshot);
2299 let align_to = block_start.to_display_point(snapshot);
2300 let anchor_x = text_x
2301 + if rows.contains(&align_to.row()) {
2302 line_layouts[align_to.row().minus(rows.start) as usize]
2303 .x_for_index(align_to.column() as usize)
2304 } else {
2305 layout_line(
2306 align_to.row(),
2307 snapshot,
2308 &self.style,
2309 editor_width,
2310 is_row_soft_wrapped,
2311 cx,
2312 )
2313 .x_for_index(align_to.column() as usize)
2314 };
2315
2316 let selected = selections
2317 .binary_search_by(|selection| {
2318 if selection.end <= block_start {
2319 Ordering::Less
2320 } else if selection.start >= block_end {
2321 Ordering::Greater
2322 } else {
2323 Ordering::Equal
2324 }
2325 })
2326 .is_ok();
2327
2328 div()
2329 .size_full()
2330 .child(block.render(&mut BlockContext {
2331 context: cx,
2332 anchor_x,
2333 gutter_dimensions,
2334 line_height,
2335 em_width,
2336 block_id,
2337 selected,
2338 max_width: text_hitbox.size.width.max(*scroll_width),
2339 editor_style: &self.style,
2340 }))
2341 .into_any()
2342 }
2343
2344 Block::FoldedBuffer {
2345 first_excerpt,
2346 prev_excerpt,
2347 show_excerpt_controls,
2348 height,
2349 } => {
2350 let selected = selected_buffer_ids.contains(&first_excerpt.buffer_id);
2351 let icon_offset = gutter_dimensions.width
2352 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2353 let mut result = v_flex().id(block_id).w_full();
2354
2355 if let Some(prev_excerpt) = prev_excerpt {
2356 if *show_excerpt_controls {
2357 result = result.child(
2358 h_flex()
2359 .id("expand_down_hit_area")
2360 .w(icon_offset)
2361 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2362 .flex_none()
2363 .justify_end()
2364 .child(self.render_expand_excerpt_button(
2365 IconName::ArrowDownFromLine,
2366 None,
2367 cx,
2368 ))
2369 .on_click(cx.listener_for(&self.editor, {
2370 let excerpt_id = prev_excerpt.id;
2371 let direction = ExpandExcerptDirection::Down;
2372 move |editor, _, cx| {
2373 editor.expand_excerpt(excerpt_id, direction, cx);
2374 cx.stop_propagation();
2375 }
2376 })),
2377 );
2378 }
2379 }
2380
2381 let jump_data = header_jump_data(snapshot, block_row_start, *height, first_excerpt);
2382 result
2383 .child(self.render_buffer_header(first_excerpt, true, selected, jump_data, cx))
2384 .into_any_element()
2385 }
2386
2387 Block::ExcerptBoundary {
2388 prev_excerpt,
2389 next_excerpt,
2390 show_excerpt_controls,
2391 height,
2392 starts_new_buffer,
2393 } => {
2394 let icon_offset = gutter_dimensions.width
2395 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2396 let header_height = MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height();
2397 let color = cx.theme().colors().clone();
2398 let hover_color = color.border_variant.opacity(0.5);
2399 let focus_handle = self.editor.focus_handle(cx).clone();
2400
2401 let mut result = v_flex().id(block_id).w_full();
2402 let expand_area = |id: SharedString| {
2403 h_flex()
2404 .id(id)
2405 .w_full()
2406 .cursor_pointer()
2407 .block_mouse_down()
2408 .on_mouse_move(|_, cx| cx.stop_propagation())
2409 .hover(|style| style.bg(hover_color))
2410 .tooltip({
2411 let focus_handle = focus_handle.clone();
2412 move |cx| {
2413 Tooltip::for_action_in(
2414 "Expand Excerpt",
2415 &ExpandExcerpts { lines: 0 },
2416 &focus_handle,
2417 cx,
2418 )
2419 }
2420 })
2421 };
2422
2423 if let Some(prev_excerpt) = prev_excerpt {
2424 if *show_excerpt_controls {
2425 let group_name = "expand-down";
2426
2427 result = result.child(
2428 expand_area(format!("block-{}-down", block_id).into())
2429 .group(group_name)
2430 .child(
2431 h_flex()
2432 .w(icon_offset)
2433 .h(header_height)
2434 .flex_none()
2435 .justify_end()
2436 .child(self.render_expand_excerpt_button(
2437 IconName::ArrowDownFromLine,
2438 Some(group_name.to_string()),
2439 cx,
2440 )),
2441 )
2442 .on_click(cx.listener_for(&self.editor, {
2443 let excerpt_id = prev_excerpt.id;
2444 let direction = ExpandExcerptDirection::Down;
2445 move |editor, _, cx| {
2446 editor.expand_excerpt(excerpt_id, direction, cx);
2447 cx.stop_propagation();
2448 }
2449 })),
2450 );
2451 }
2452 }
2453
2454 if let Some(next_excerpt) = next_excerpt {
2455 let jump_data =
2456 header_jump_data(snapshot, block_row_start, *height, next_excerpt);
2457
2458 if *starts_new_buffer {
2459 if sticky_header_excerpt_id != Some(next_excerpt.id) {
2460 let selected = selected_buffer_ids.contains(&next_excerpt.buffer_id);
2461
2462 result = result.child(self.render_buffer_header(
2463 next_excerpt,
2464 false,
2465 selected,
2466 jump_data,
2467 cx,
2468 ));
2469 } else {
2470 result =
2471 result.child(div().h(FILE_HEADER_HEIGHT as f32 * cx.line_height()));
2472 }
2473
2474 if *show_excerpt_controls {
2475 let group_name = "expand-up-first";
2476
2477 result = result.child(
2478 h_flex().group(group_name).child(
2479 expand_area(format!("block-{}-up-first", block_id).into())
2480 .h(header_height)
2481 .child(
2482 h_flex()
2483 .w(icon_offset)
2484 .h(header_height)
2485 .flex_none()
2486 .justify_end()
2487 .child(self.render_expand_excerpt_button(
2488 IconName::ArrowUpFromLine,
2489 Some(group_name.to_string()),
2490 cx,
2491 )),
2492 )
2493 .on_click(cx.listener_for(&self.editor, {
2494 let excerpt_id = next_excerpt.id;
2495 let direction = ExpandExcerptDirection::Up;
2496 move |editor, _, cx| {
2497 editor.expand_excerpt(excerpt_id, direction, cx);
2498 cx.stop_propagation();
2499 }
2500 })),
2501 ),
2502 );
2503 }
2504 } else {
2505 let group_name = "expand-up-subsequent";
2506
2507 if *show_excerpt_controls {
2508 result = result.child(
2509 h_flex()
2510 .relative()
2511 .group(group_name)
2512 .child(
2513 div()
2514 .top(px(0.))
2515 .absolute()
2516 .w_full()
2517 .h_px()
2518 .bg(color.border_variant),
2519 )
2520 .child(
2521 expand_area(format!("block-{}-up", block_id).into())
2522 .h(header_height)
2523 .child(
2524 h_flex()
2525 .w(icon_offset)
2526 .h(header_height)
2527 .flex_none()
2528 .justify_end()
2529 .child(if *show_excerpt_controls {
2530 self.render_expand_excerpt_button(
2531 IconName::ArrowUpFromLine,
2532 Some(group_name.to_string()),
2533 cx,
2534 )
2535 } else {
2536 ButtonLike::new("jump-icon")
2537 .style(ButtonStyle::Transparent)
2538 .child(
2539 svg()
2540 .path(
2541 IconName::ArrowUpRight
2542 .path(),
2543 )
2544 .size(IconSize::XSmall.rems())
2545 .text_color(
2546 color.border_variant,
2547 )
2548 .group_hover(
2549 group_name,
2550 |style| {
2551 style.text_color(
2552 color.border,
2553 )
2554 },
2555 ),
2556 )
2557 }),
2558 )
2559 .on_click(cx.listener_for(&self.editor, {
2560 let excerpt_id = next_excerpt.id;
2561 let direction = ExpandExcerptDirection::Up;
2562 move |editor, _, cx| {
2563 editor
2564 .expand_excerpt(excerpt_id, direction, cx);
2565 cx.stop_propagation();
2566 }
2567 })),
2568 ),
2569 );
2570 }
2571 };
2572 }
2573
2574 result.into_any()
2575 }
2576 };
2577
2578 // Discover the element's content height, then round up to the nearest multiple of line height.
2579 let preliminary_size =
2580 element.layout_as_root(size(available_width, AvailableSpace::MinContent), cx);
2581 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2582 let final_size = if preliminary_size.height == quantized_height {
2583 preliminary_size
2584 } else {
2585 element.layout_as_root(size(available_width, quantized_height.into()), cx)
2586 };
2587
2588 if let BlockId::Custom(custom_block_id) = block_id {
2589 if block.height() > 0 {
2590 let element_height_in_lines =
2591 ((final_size.height / line_height).ceil() as u32).max(1);
2592 if element_height_in_lines != block.height() {
2593 resized_blocks.insert(custom_block_id, element_height_in_lines);
2594 }
2595 }
2596 }
2597
2598 (element, final_size)
2599 }
2600
2601 fn render_buffer_header(
2602 &self,
2603 for_excerpt: &ExcerptInfo,
2604 is_folded: bool,
2605 is_selected: bool,
2606 jump_data: JumpData,
2607 cx: &mut WindowContext,
2608 ) -> Div {
2609 let include_root = self
2610 .editor
2611 .read(cx)
2612 .project
2613 .as_ref()
2614 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2615 .unwrap_or_default();
2616 let path = for_excerpt.buffer.resolve_file_path(cx, include_root);
2617 let filename = path
2618 .as_ref()
2619 .and_then(|path| Some(path.file_name()?.to_string_lossy().to_string()));
2620 let parent_path = path
2621 .as_ref()
2622 .and_then(|path| Some(path.parent()?.to_string_lossy().to_string() + "/"));
2623 let focus_handle = self.editor.focus_handle(cx);
2624 let colors = cx.theme().colors();
2625
2626 div()
2627 .px_2()
2628 .pt_2()
2629 .w_full()
2630 .h(FILE_HEADER_HEIGHT as f32 * cx.line_height())
2631 .child(
2632 h_flex()
2633 .size_full()
2634 .gap_2()
2635 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2636 .pl_0p5()
2637 .pr_5()
2638 .rounded_md()
2639 .shadow_md()
2640 .border_1()
2641 .map(|div| {
2642 let border_color = if is_selected && is_folded {
2643 colors.border_focused
2644 } else {
2645 colors.border
2646 };
2647 div.border_color(border_color)
2648 })
2649 .bg(colors.editor_subheader_background)
2650 .hover(|style| style.bg(colors.element_hover))
2651 .map(|header| {
2652 let editor = self.editor.clone();
2653 let buffer_id = for_excerpt.buffer_id;
2654 let toggle_chevron_icon =
2655 FileIcons::get_chevron_icon(!is_folded, cx).map(Icon::from_path);
2656 header.child(
2657 div()
2658 .hover(|style| style.bg(colors.element_selected))
2659 .rounded_sm()
2660 .child(
2661 ButtonLike::new("toggle-buffer-fold")
2662 .style(ui::ButtonStyle::Transparent)
2663 .size(ButtonSize::Large)
2664 .width(px(30.).into())
2665 .children(toggle_chevron_icon)
2666 .tooltip({
2667 let focus_handle = focus_handle.clone();
2668 move |cx| {
2669 Tooltip::for_action_in(
2670 "Toggle Excerpt Fold",
2671 &ToggleFold,
2672 &focus_handle,
2673 cx,
2674 )
2675 }
2676 })
2677 .on_click(move |_, cx| {
2678 if is_folded {
2679 editor.update(cx, |editor, cx| {
2680 editor.unfold_buffer(buffer_id, cx);
2681 });
2682 } else {
2683 editor.update(cx, |editor, cx| {
2684 editor.fold_buffer(buffer_id, cx);
2685 });
2686 }
2687 }),
2688 ),
2689 )
2690 })
2691 .child(
2692 h_flex()
2693 .cursor_pointer()
2694 .id("path header block")
2695 .size_full()
2696 .justify_between()
2697 .child(
2698 h_flex()
2699 .gap_2()
2700 .child(
2701 filename
2702 .map(SharedString::from)
2703 .unwrap_or_else(|| "untitled".into()),
2704 )
2705 .when_some(parent_path, |then, path| {
2706 then.child(div().child(path).text_color(colors.text_muted))
2707 }),
2708 )
2709 .when(is_selected, |el| {
2710 el.child(
2711 h_flex()
2712 .id("jump-to-file-button")
2713 .gap_2p5()
2714 .child(Label::new("Jump To File"))
2715 .children(
2716 KeyBinding::for_action_in(
2717 &OpenExcerpts,
2718 &focus_handle,
2719 cx,
2720 )
2721 .map(|binding| binding.into_any_element()),
2722 ),
2723 )
2724 })
2725 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
2726 .on_click(cx.listener_for(&self.editor, {
2727 move |editor, e: &ClickEvent, cx| {
2728 editor.open_excerpts_common(
2729 Some(jump_data.clone()),
2730 e.down.modifiers.secondary(),
2731 cx,
2732 );
2733 }
2734 })),
2735 ),
2736 )
2737 }
2738
2739 fn render_expand_excerpt_button(
2740 &self,
2741 icon: IconName,
2742 group_name: impl Into<Option<String>>,
2743 cx: &mut WindowContext,
2744 ) -> ButtonLike {
2745 let group_name = group_name.into();
2746 ButtonLike::new("expand-icon")
2747 .style(ButtonStyle::Transparent)
2748 .child(
2749 svg()
2750 .path(icon.path())
2751 .size(IconSize::XSmall.rems())
2752 .text_color(cx.theme().colors().editor_line_number)
2753 .when_some(group_name, |svg, group_name| {
2754 svg.group_hover(group_name, |style| {
2755 style.text_color(cx.theme().colors().editor_active_line_number)
2756 })
2757 }),
2758 )
2759 }
2760
2761 #[allow(clippy::too_many_arguments)]
2762 fn render_blocks(
2763 &self,
2764 rows: Range<DisplayRow>,
2765 snapshot: &EditorSnapshot,
2766 hitbox: &Hitbox,
2767 text_hitbox: &Hitbox,
2768 editor_width: Pixels,
2769 scroll_width: &mut Pixels,
2770 gutter_dimensions: &GutterDimensions,
2771 em_width: Pixels,
2772 text_x: Pixels,
2773 line_height: Pixels,
2774 line_layouts: &[LineWithInvisibles],
2775 selections: &[Selection<Point>],
2776 selected_buffer_ids: &Vec<BufferId>,
2777 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2778 sticky_header_excerpt_id: Option<ExcerptId>,
2779 cx: &mut WindowContext,
2780 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2781 let (fixed_blocks, non_fixed_blocks) = snapshot
2782 .blocks_in_range(rows.clone())
2783 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2784
2785 let mut focused_block = self
2786 .editor
2787 .update(cx, |editor, _| editor.take_focused_block());
2788 let mut fixed_block_max_width = Pixels::ZERO;
2789 let mut blocks = Vec::new();
2790 let mut resized_blocks = HashMap::default();
2791
2792 for (row, block) in fixed_blocks {
2793 let block_id = block.id();
2794
2795 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2796 focused_block = None;
2797 }
2798
2799 let (element, element_size) = self.render_block(
2800 block,
2801 AvailableSpace::MinContent,
2802 block_id,
2803 row,
2804 snapshot,
2805 text_x,
2806 &rows,
2807 line_layouts,
2808 gutter_dimensions,
2809 line_height,
2810 em_width,
2811 text_hitbox,
2812 editor_width,
2813 scroll_width,
2814 &mut resized_blocks,
2815 selections,
2816 selected_buffer_ids,
2817 is_row_soft_wrapped,
2818 sticky_header_excerpt_id,
2819 cx,
2820 );
2821 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2822 blocks.push(BlockLayout {
2823 id: block_id,
2824 row: Some(row),
2825 element,
2826 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
2827 style: BlockStyle::Fixed,
2828 });
2829 }
2830
2831 for (row, block) in non_fixed_blocks {
2832 let style = block.style();
2833 let width = match style {
2834 BlockStyle::Sticky => hitbox.size.width,
2835 BlockStyle::Flex => hitbox
2836 .size
2837 .width
2838 .max(fixed_block_max_width)
2839 .max(gutter_dimensions.width + *scroll_width),
2840 BlockStyle::Fixed => unreachable!(),
2841 };
2842 let block_id = block.id();
2843
2844 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2845 focused_block = None;
2846 }
2847
2848 let (element, element_size) = self.render_block(
2849 block,
2850 width.into(),
2851 block_id,
2852 row,
2853 snapshot,
2854 text_x,
2855 &rows,
2856 line_layouts,
2857 gutter_dimensions,
2858 line_height,
2859 em_width,
2860 text_hitbox,
2861 editor_width,
2862 scroll_width,
2863 &mut resized_blocks,
2864 selections,
2865 selected_buffer_ids,
2866 is_row_soft_wrapped,
2867 sticky_header_excerpt_id,
2868 cx,
2869 );
2870
2871 blocks.push(BlockLayout {
2872 id: block_id,
2873 row: Some(row),
2874 element,
2875 available_space: size(width.into(), element_size.height.into()),
2876 style,
2877 });
2878 }
2879
2880 if let Some(focused_block) = focused_block {
2881 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2882 if focus_handle.is_focused(cx) {
2883 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2884 let style = block.style();
2885 let width = match style {
2886 BlockStyle::Fixed => AvailableSpace::MinContent,
2887 BlockStyle::Flex => AvailableSpace::Definite(
2888 hitbox
2889 .size
2890 .width
2891 .max(fixed_block_max_width)
2892 .max(gutter_dimensions.width + *scroll_width),
2893 ),
2894 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2895 };
2896
2897 let (element, element_size) = self.render_block(
2898 &block,
2899 width,
2900 focused_block.id,
2901 rows.end,
2902 snapshot,
2903 text_x,
2904 &rows,
2905 line_layouts,
2906 gutter_dimensions,
2907 line_height,
2908 em_width,
2909 text_hitbox,
2910 editor_width,
2911 scroll_width,
2912 &mut resized_blocks,
2913 selections,
2914 selected_buffer_ids,
2915 is_row_soft_wrapped,
2916 sticky_header_excerpt_id,
2917 cx,
2918 );
2919
2920 blocks.push(BlockLayout {
2921 id: block.id(),
2922 row: None,
2923 element,
2924 available_space: size(width, element_size.height.into()),
2925 style,
2926 });
2927 }
2928 }
2929 }
2930 }
2931
2932 if resized_blocks.is_empty() {
2933 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2934 Ok(blocks)
2935 } else {
2936 Err(resized_blocks)
2937 }
2938 }
2939
2940 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
2941 /// a restart of rendering for the editor based on the new sizes.
2942 fn layout_blocks(
2943 &self,
2944 blocks: &mut Vec<BlockLayout>,
2945 block_starts: &mut HashSet<DisplayRow>,
2946 hitbox: &Hitbox,
2947 line_height: Pixels,
2948 scroll_pixel_position: gpui::Point<Pixels>,
2949 cx: &mut WindowContext,
2950 ) {
2951 for block in blocks {
2952 let mut origin = if let Some(row) = block.row {
2953 block_starts.insert(row);
2954 hitbox.origin
2955 + point(
2956 Pixels::ZERO,
2957 row.as_f32() * line_height - scroll_pixel_position.y,
2958 )
2959 } else {
2960 // Position the block outside the visible area
2961 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2962 };
2963
2964 if !matches!(block.style, BlockStyle::Sticky) {
2965 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2966 }
2967
2968 let focus_handle = block
2969 .element
2970 .prepaint_as_root(origin, block.available_space, cx);
2971
2972 if let Some(focus_handle) = focus_handle {
2973 self.editor.update(cx, |editor, _cx| {
2974 editor.set_focused_block(FocusedBlock {
2975 id: block.id,
2976 focus_handle: focus_handle.downgrade(),
2977 });
2978 });
2979 }
2980 }
2981 }
2982
2983 #[allow(clippy::too_many_arguments)]
2984 fn layout_sticky_buffer_header(
2985 &self,
2986 StickyHeaderExcerpt {
2987 excerpt,
2988 next_excerpt_controls_present,
2989 next_buffer_row,
2990 }: StickyHeaderExcerpt<'_>,
2991 scroll_position: f32,
2992 line_height: Pixels,
2993 snapshot: &EditorSnapshot,
2994 hitbox: &Hitbox,
2995 selected_buffer_ids: &Vec<BufferId>,
2996 cx: &mut WindowContext,
2997 ) -> AnyElement {
2998 let jump_data = header_jump_data(
2999 snapshot,
3000 DisplayRow(scroll_position as u32),
3001 FILE_HEADER_HEIGHT + MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
3002 excerpt,
3003 );
3004
3005 let editor_bg_color = cx.theme().colors().editor_background;
3006
3007 let selected = selected_buffer_ids.contains(&excerpt.buffer_id);
3008
3009 let mut header = v_flex()
3010 .relative()
3011 .child(
3012 div()
3013 .w(hitbox.bounds.size.width)
3014 .h(FILE_HEADER_HEIGHT as f32 * line_height)
3015 .bg(linear_gradient(
3016 0.,
3017 linear_color_stop(editor_bg_color.opacity(0.), 0.),
3018 linear_color_stop(editor_bg_color, 0.6),
3019 ))
3020 .absolute()
3021 .top_0(),
3022 )
3023 .child(
3024 self.render_buffer_header(excerpt, false, selected, jump_data, cx)
3025 .into_any_element(),
3026 )
3027 .into_any_element();
3028
3029 let mut origin = hitbox.origin;
3030
3031 if let Some(next_buffer_row) = next_buffer_row {
3032 // Push up the sticky header when the excerpt is getting close to the top of the viewport
3033
3034 let mut max_row = next_buffer_row - FILE_HEADER_HEIGHT * 2;
3035
3036 if next_excerpt_controls_present {
3037 max_row -= MULTI_BUFFER_EXCERPT_HEADER_HEIGHT;
3038 }
3039
3040 let offset = scroll_position - max_row as f32;
3041
3042 if offset > 0.0 {
3043 origin.y -= Pixels(offset) * line_height;
3044 }
3045 }
3046
3047 let size = size(
3048 AvailableSpace::Definite(hitbox.size.width),
3049 AvailableSpace::MinContent,
3050 );
3051
3052 header.prepaint_as_root(origin, size, cx);
3053
3054 header
3055 }
3056
3057 #[allow(clippy::too_many_arguments)]
3058 fn layout_context_menu(
3059 &self,
3060 line_height: Pixels,
3061 text_hitbox: &Hitbox,
3062 content_origin: gpui::Point<Pixels>,
3063 start_row: DisplayRow,
3064 scroll_pixel_position: gpui::Point<Pixels>,
3065 line_layouts: &[LineWithInvisibles],
3066 newest_selection_head: DisplayPoint,
3067 gutter_overshoot: Pixels,
3068 cx: &mut WindowContext,
3069 ) {
3070 let Some(context_menu_origin) = self
3071 .editor
3072 .read(cx)
3073 .context_menu_origin(newest_selection_head)
3074 else {
3075 return;
3076 };
3077 let target_position = content_origin
3078 + match context_menu_origin {
3079 crate::ContextMenuOrigin::EditorPoint(display_point) => {
3080 let cursor_row_layout =
3081 &line_layouts[display_point.row().minus(start_row) as usize];
3082 gpui::Point {
3083 x: cmp::max(
3084 px(0.),
3085 cursor_row_layout.x_for_index(display_point.column() as usize)
3086 - scroll_pixel_position.x,
3087 ),
3088 y: cmp::max(
3089 px(0.),
3090 display_point.row().next_row().as_f32() * line_height
3091 - scroll_pixel_position.y,
3092 ),
3093 }
3094 }
3095 crate::ContextMenuOrigin::GutterIndicator(row) => {
3096 // 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
3097 // text field.
3098 gpui::Point {
3099 x: -gutter_overshoot,
3100 y: row.next_row().as_f32() * line_height - scroll_pixel_position.y,
3101 }
3102 }
3103 };
3104
3105 let viewport_bounds = Bounds::new(Default::default(), cx.viewport_size()).extend(Edges {
3106 right: -Self::SCROLLBAR_WIDTH - MENU_GAP,
3107 ..Default::default()
3108 });
3109
3110 // If the context menu's max height won't fit below, then flip it above the line and display
3111 // it in reverse order. If the available space above is less than below.
3112 let unconstrained_max_height = line_height * 12. + POPOVER_Y_PADDING;
3113 let min_height = line_height * 3. + POPOVER_Y_PADDING;
3114 let bottom_y_when_flipped = target_position.y - line_height;
3115 let available_above = bottom_y_when_flipped - text_hitbox.top();
3116 let available_below = text_hitbox.bottom() - target_position.y;
3117 let y_overflows_below = unconstrained_max_height > available_below;
3118 let mut y_is_flipped = y_overflows_below && available_above > available_below;
3119 let mut height = cmp::min(
3120 unconstrained_max_height,
3121 if y_is_flipped {
3122 available_above
3123 } else {
3124 available_below
3125 },
3126 );
3127
3128 // If less than 3 lines fit within the text bounds, instead fit within the window.
3129 if height < min_height {
3130 let available_above = bottom_y_when_flipped;
3131 let available_below = viewport_bounds.bottom() - target_position.y;
3132 if available_below > 3. * line_height {
3133 y_is_flipped = false;
3134 height = min_height;
3135 } else if available_above > 3. * line_height {
3136 y_is_flipped = true;
3137 height = min_height;
3138 } else if available_above > available_below {
3139 y_is_flipped = true;
3140 height = available_above;
3141 } else {
3142 y_is_flipped = false;
3143 height = available_below;
3144 }
3145 }
3146
3147 let max_height_in_lines = ((height - POPOVER_Y_PADDING) / line_height).floor() as u32;
3148
3149 // TODO(mgsloan): use viewport_bounds.width as a max width when rendering menu.
3150 let Some(mut menu_element) = self.editor.update(cx, |editor, cx| {
3151 editor.render_context_menu(&self.style, max_height_in_lines, cx)
3152 }) else {
3153 return;
3154 };
3155
3156 let menu_size = menu_element.layout_as_root(AvailableSpace::min_size(), cx);
3157 let menu_position = gpui::Point {
3158 // Snap the right edge of the list to the right edge of the window if its horizontal bounds
3159 // overflow. Include space for the scrollbar.
3160 x: target_position
3161 .x
3162 .min((viewport_bounds.right() - menu_size.width).max(Pixels::ZERO)),
3163 y: if y_is_flipped {
3164 bottom_y_when_flipped - menu_size.height
3165 } else {
3166 target_position.y
3167 },
3168 };
3169 cx.defer_draw(menu_element, menu_position, 1);
3170
3171 // Layout documentation aside
3172 let menu_bounds = Bounds::new(menu_position, menu_size);
3173 let max_menu_size = size(menu_size.width, unconstrained_max_height);
3174 let max_menu_bounds = if y_is_flipped {
3175 Bounds::new(
3176 point(
3177 menu_position.x,
3178 bottom_y_when_flipped - max_menu_size.height,
3179 ),
3180 max_menu_size,
3181 )
3182 } else {
3183 Bounds::new(target_position, max_menu_size)
3184 };
3185 self.layout_context_menu_aside(
3186 text_hitbox,
3187 y_is_flipped,
3188 menu_position,
3189 menu_bounds,
3190 max_menu_bounds,
3191 unconstrained_max_height,
3192 line_height,
3193 viewport_bounds,
3194 cx,
3195 );
3196 }
3197
3198 #[allow(clippy::too_many_arguments)]
3199 fn layout_context_menu_aside(
3200 &self,
3201 text_hitbox: &Hitbox,
3202 y_is_flipped: bool,
3203 menu_position: gpui::Point<Pixels>,
3204 menu_bounds: Bounds<Pixels>,
3205 max_menu_bounds: Bounds<Pixels>,
3206 max_height: Pixels,
3207 line_height: Pixels,
3208 viewport_bounds: Bounds<Pixels>,
3209 cx: &mut WindowContext,
3210 ) {
3211 let mut extend_amount = Edges::all(MENU_GAP);
3212 // Extend to include the cursored line to avoid overlapping it.
3213 if y_is_flipped {
3214 extend_amount.bottom = line_height;
3215 } else {
3216 extend_amount.top = line_height;
3217 }
3218 let target_bounds = menu_bounds.extend(extend_amount);
3219 let max_target_bounds = max_menu_bounds.extend(extend_amount);
3220
3221 let available_within_viewport = target_bounds.space_within(&viewport_bounds);
3222 let positioned_aside = if available_within_viewport.right >= MENU_ASIDE_MIN_WIDTH {
3223 let max_width = cmp::min(
3224 available_within_viewport.right - px(1.),
3225 MENU_ASIDE_MAX_WIDTH,
3226 );
3227 let Some(mut aside) =
3228 self.render_context_menu_aside(size(max_width, max_height - POPOVER_Y_PADDING), cx)
3229 else {
3230 return;
3231 };
3232 aside.layout_as_root(AvailableSpace::min_size(), cx);
3233 let right_position = point(target_bounds.right(), menu_position.y);
3234 Some((aside, right_position))
3235 } else {
3236 let max_size = size(
3237 // TODO(mgsloan): Once the menu is bounded by viewport width the bound on viewport
3238 // won't be needed here.
3239 cmp::min(
3240 cmp::max(menu_bounds.size.width - px(2.), MENU_ASIDE_MIN_WIDTH),
3241 viewport_bounds.right(),
3242 ),
3243 cmp::min(
3244 max_height,
3245 cmp::max(
3246 available_within_viewport.top,
3247 available_within_viewport.bottom,
3248 ),
3249 ) - POPOVER_Y_PADDING,
3250 );
3251 let Some(mut aside) = self.render_context_menu_aside(max_size, cx) else {
3252 return;
3253 };
3254 let actual_size = aside.layout_as_root(AvailableSpace::min_size(), cx);
3255
3256 let top_position = point(menu_position.x, target_bounds.top() - actual_size.height);
3257 let bottom_position = point(menu_position.x, target_bounds.bottom());
3258
3259 let fit_within = |available: Edges<Pixels>, wanted: Size<Pixels>| {
3260 // Prefer to fit on the same side of the line as the menu, then on the other side of
3261 // the line.
3262 if !y_is_flipped && wanted.height < available.bottom {
3263 Some(bottom_position)
3264 } else if !y_is_flipped && wanted.height < available.top {
3265 Some(top_position)
3266 } else if y_is_flipped && wanted.height < available.top {
3267 Some(top_position)
3268 } else if y_is_flipped && wanted.height < available.bottom {
3269 Some(bottom_position)
3270 } else {
3271 None
3272 }
3273 };
3274
3275 // Prefer choosing a direction using max sizes rather than actual size for stability.
3276 let available_within_text = max_target_bounds.space_within(&text_hitbox.bounds);
3277 let wanted = size(MENU_ASIDE_MAX_WIDTH, max_height);
3278 let aside_position = fit_within(available_within_text, wanted)
3279 // Fallback: fit max size in window.
3280 .or_else(|| fit_within(max_target_bounds.space_within(&viewport_bounds), wanted))
3281 // Fallback: fit actual size in window.
3282 .or_else(|| fit_within(available_within_viewport, actual_size));
3283
3284 aside_position.map(|position| (aside, position))
3285 };
3286
3287 // Skip drawing if it doesn't fit anywhere.
3288 if let Some((aside, position)) = positioned_aside {
3289 cx.defer_draw(aside, position, 1);
3290 }
3291 }
3292
3293 fn render_context_menu_aside(
3294 &self,
3295 max_size: Size<Pixels>,
3296 cx: &mut WindowContext,
3297 ) -> Option<AnyElement> {
3298 if max_size.width < px(100.) || max_size.height < px(12.) {
3299 None
3300 } else {
3301 self.editor.update(cx, |editor, cx| {
3302 editor.render_context_menu_aside(&self.style, max_size, cx)
3303 })
3304 }
3305 }
3306
3307 #[allow(clippy::too_many_arguments)]
3308 fn layout_inline_completion_popover(
3309 &self,
3310 text_bounds: &Bounds<Pixels>,
3311 editor_snapshot: &EditorSnapshot,
3312 visible_row_range: Range<DisplayRow>,
3313 scroll_top: f32,
3314 scroll_bottom: f32,
3315 line_layouts: &[LineWithInvisibles],
3316 line_height: Pixels,
3317 scroll_pixel_position: gpui::Point<Pixels>,
3318 editor_width: Pixels,
3319 style: &EditorStyle,
3320 cx: &mut WindowContext,
3321 ) -> Option<AnyElement> {
3322 const PADDING_X: Pixels = Pixels(24.);
3323 const PADDING_Y: Pixels = Pixels(2.);
3324
3325 let active_inline_completion = self.editor.read(cx).active_inline_completion.as_ref()?;
3326
3327 match &active_inline_completion.completion {
3328 InlineCompletion::Move(target_position) => {
3329 let tab_kbd = h_flex()
3330 .px_0p5()
3331 .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
3332 .text_size(TextSize::XSmall.rems(cx))
3333 .text_color(cx.theme().colors().text)
3334 .child("tab");
3335
3336 let icon_container = div().mt(px(2.5)); // For optical alignment
3337
3338 let container_element = h_flex()
3339 .items_center()
3340 .py_0p5()
3341 .px_1()
3342 .gap_1()
3343 .bg(cx.theme().colors().text_accent.opacity(0.15))
3344 .border_1()
3345 .border_color(cx.theme().colors().text_accent.opacity(0.8))
3346 .rounded_md()
3347 .shadow_sm();
3348
3349 let target_display_point = target_position.to_display_point(editor_snapshot);
3350 if target_display_point.row().as_f32() < scroll_top {
3351 let mut element = container_element
3352 .child(tab_kbd)
3353 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3354 .child(
3355 icon_container
3356 .child(Icon::new(IconName::ArrowUp).size(IconSize::Small)),
3357 )
3358 .into_any();
3359 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3360 let offset = point((text_bounds.size.width - size.width) / 2., PADDING_Y);
3361 element.prepaint_at(text_bounds.origin + offset, cx);
3362 Some(element)
3363 } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
3364 let mut element = container_element
3365 .child(tab_kbd)
3366 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3367 .child(
3368 icon_container
3369 .child(Icon::new(IconName::ArrowDown).size(IconSize::Small)),
3370 )
3371 .into_any();
3372 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3373 let offset = point(
3374 (text_bounds.size.width - size.width) / 2.,
3375 text_bounds.size.height - size.height - PADDING_Y,
3376 );
3377 element.prepaint_at(text_bounds.origin + offset, cx);
3378 Some(element)
3379 } else {
3380 let mut element = container_element
3381 .child(tab_kbd)
3382 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3383 .into_any();
3384
3385 let target_line_end = DisplayPoint::new(
3386 target_display_point.row(),
3387 editor_snapshot.line_len(target_display_point.row()),
3388 );
3389 let origin = self.editor.update(cx, |editor, cx| {
3390 editor.display_to_pixel_point(target_line_end, editor_snapshot, cx)
3391 })?;
3392 element.prepaint_as_root(
3393 text_bounds.origin + origin + point(PADDING_X, px(0.)),
3394 AvailableSpace::min_size(),
3395 cx,
3396 );
3397 Some(element)
3398 }
3399 }
3400 InlineCompletion::Edit(edits) => {
3401 if self.editor.read(cx).has_active_completions_menu() {
3402 return None;
3403 }
3404
3405 let edit_start = edits
3406 .first()
3407 .unwrap()
3408 .0
3409 .start
3410 .to_display_point(editor_snapshot);
3411 let edit_end = edits
3412 .last()
3413 .unwrap()
3414 .0
3415 .end
3416 .to_display_point(editor_snapshot);
3417
3418 let is_visible = visible_row_range.contains(&edit_start.row())
3419 || visible_row_range.contains(&edit_end.row());
3420 if !is_visible {
3421 return None;
3422 }
3423
3424 if !hard_to_spot_single_edit(&edits, &editor_snapshot.buffer_snapshot)
3425 && all_edits_insertions_or_deletions(edits, &editor_snapshot.buffer_snapshot)
3426 {
3427 return None;
3428 }
3429
3430 let crate::InlineCompletionText::Edit { text, highlights } =
3431 crate::inline_completion_edit_text(editor_snapshot, edits, false, cx)
3432 else {
3433 return None;
3434 };
3435
3436 let line_count = text.lines().count() + 1;
3437
3438 let longest_row =
3439 editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
3440 let longest_line_width = if visible_row_range.contains(&longest_row) {
3441 line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
3442 } else {
3443 layout_line(
3444 longest_row,
3445 editor_snapshot,
3446 style,
3447 editor_width,
3448 |_| false,
3449 cx,
3450 )
3451 .width
3452 };
3453
3454 let styled_text =
3455 gpui::StyledText::new(text.clone()).with_highlights(&style.text, highlights);
3456
3457 let mut element = div()
3458 .bg(cx.theme().colors().editor_background)
3459 .border_1()
3460 .border_color(cx.theme().colors().border)
3461 .rounded_md()
3462 .px_1()
3463 .child(styled_text)
3464 .into_any();
3465
3466 let element_bounds = element.layout_as_root(AvailableSpace::min_size(), cx);
3467 let is_fully_visible =
3468 editor_width >= longest_line_width + PADDING_X + element_bounds.width;
3469
3470 let origin = if is_fully_visible {
3471 text_bounds.origin
3472 + point(
3473 longest_line_width + PADDING_X - scroll_pixel_position.x,
3474 edit_start.row().as_f32() * line_height - scroll_pixel_position.y,
3475 )
3476 } else {
3477 let target_above =
3478 DisplayRow(edit_start.row().0.saturating_sub(line_count as u32));
3479 let row_target = if visible_row_range
3480 .contains(&DisplayRow(target_above.0.saturating_sub(1)))
3481 {
3482 target_above
3483 } else {
3484 DisplayRow(edit_end.row().0 + 1)
3485 };
3486
3487 text_bounds.origin
3488 + point(
3489 -scroll_pixel_position.x,
3490 row_target.as_f32() * line_height - scroll_pixel_position.y,
3491 )
3492 };
3493
3494 element.prepaint_as_root(origin, element_bounds.into(), cx);
3495 Some(element)
3496 }
3497 }
3498 }
3499
3500 fn layout_mouse_context_menu(
3501 &self,
3502 editor_snapshot: &EditorSnapshot,
3503 visible_range: Range<DisplayRow>,
3504 content_origin: gpui::Point<Pixels>,
3505 cx: &mut WindowContext,
3506 ) -> Option<AnyElement> {
3507 let position = self.editor.update(cx, |editor, cx| {
3508 let visible_start_point = editor.display_to_pixel_point(
3509 DisplayPoint::new(visible_range.start, 0),
3510 editor_snapshot,
3511 cx,
3512 )?;
3513 let visible_end_point = editor.display_to_pixel_point(
3514 DisplayPoint::new(visible_range.end, 0),
3515 editor_snapshot,
3516 cx,
3517 )?;
3518
3519 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3520 let (source_display_point, position) = match mouse_context_menu.position {
3521 MenuPosition::PinnedToScreen(point) => (None, point),
3522 MenuPosition::PinnedToEditor { source, offset } => {
3523 let source_display_point = source.to_display_point(editor_snapshot);
3524 let source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
3525 let position = content_origin + source_point + offset;
3526 (Some(source_display_point), position)
3527 }
3528 };
3529
3530 let source_included = source_display_point.map_or(true, |source_display_point| {
3531 visible_range
3532 .to_inclusive()
3533 .contains(&source_display_point.row())
3534 });
3535 let position_included =
3536 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
3537 if !source_included && !position_included {
3538 None
3539 } else {
3540 Some(position)
3541 }
3542 })?;
3543
3544 let mut element = self.editor.update(cx, |editor, _| {
3545 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3546 let context_menu = mouse_context_menu.context_menu.clone();
3547
3548 Some(
3549 deferred(
3550 anchored()
3551 .position(position)
3552 .child(context_menu)
3553 .anchor(Corner::TopLeft)
3554 .snap_to_window_with_margin(px(8.)),
3555 )
3556 .with_priority(1)
3557 .into_any(),
3558 )
3559 })?;
3560
3561 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
3562 Some(element)
3563 }
3564
3565 #[allow(clippy::too_many_arguments)]
3566 fn layout_hover_popovers(
3567 &self,
3568 snapshot: &EditorSnapshot,
3569 hitbox: &Hitbox,
3570 text_hitbox: &Hitbox,
3571 visible_display_row_range: Range<DisplayRow>,
3572 content_origin: gpui::Point<Pixels>,
3573 scroll_pixel_position: gpui::Point<Pixels>,
3574 line_layouts: &[LineWithInvisibles],
3575 line_height: Pixels,
3576 em_width: Pixels,
3577 cx: &mut WindowContext,
3578 ) {
3579 struct MeasuredHoverPopover {
3580 element: AnyElement,
3581 size: Size<Pixels>,
3582 horizontal_offset: Pixels,
3583 }
3584
3585 let max_size = size(
3586 (120. * em_width) // Default size
3587 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3588 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3589 (16. * line_height) // Default size
3590 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3591 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3592 );
3593
3594 let hover_popovers = self.editor.update(cx, |editor, cx| {
3595 editor
3596 .hover_state
3597 .render(snapshot, visible_display_row_range.clone(), max_size, cx)
3598 });
3599 let Some((position, hover_popovers)) = hover_popovers else {
3600 return;
3601 };
3602
3603 // This is safe because we check on layout whether the required row is available
3604 let hovered_row_layout =
3605 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
3606
3607 // Compute Hovered Point
3608 let x =
3609 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
3610 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
3611 let hovered_point = content_origin + point(x, y);
3612
3613 let mut overall_height = Pixels::ZERO;
3614 let mut measured_hover_popovers = Vec::new();
3615 for mut hover_popover in hover_popovers {
3616 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
3617 let horizontal_offset =
3618 (text_hitbox.top_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
3619
3620 overall_height += HOVER_POPOVER_GAP + size.height;
3621
3622 measured_hover_popovers.push(MeasuredHoverPopover {
3623 element: hover_popover,
3624 size,
3625 horizontal_offset,
3626 });
3627 }
3628 overall_height += HOVER_POPOVER_GAP;
3629
3630 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3631 let mut occlusion = div()
3632 .size_full()
3633 .occlude()
3634 .on_mouse_move(|_, cx| cx.stop_propagation())
3635 .into_any_element();
3636 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
3637 cx.defer_draw(occlusion, origin, 2);
3638 }
3639
3640 if hovered_point.y > overall_height {
3641 // There is enough space above. Render popovers above the hovered point
3642 let mut current_y = hovered_point.y;
3643 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3644 let size = popover.size;
3645 let popover_origin = point(
3646 hovered_point.x + popover.horizontal_offset,
3647 current_y - size.height,
3648 );
3649
3650 cx.defer_draw(popover.element, popover_origin, 2);
3651 if position != itertools::Position::Last {
3652 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
3653 draw_occluder(size.width, origin, cx);
3654 }
3655
3656 current_y = popover_origin.y - HOVER_POPOVER_GAP;
3657 }
3658 } else {
3659 // There is not enough space above. Render popovers below the hovered point
3660 let mut current_y = hovered_point.y + line_height;
3661 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3662 let size = popover.size;
3663 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
3664
3665 cx.defer_draw(popover.element, popover_origin, 2);
3666 if position != itertools::Position::Last {
3667 let origin = point(popover_origin.x, popover_origin.y + size.height);
3668 draw_occluder(size.width, origin, cx);
3669 }
3670
3671 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
3672 }
3673 }
3674 }
3675
3676 #[allow(clippy::too_many_arguments)]
3677 fn layout_signature_help(
3678 &self,
3679 hitbox: &Hitbox,
3680 content_origin: gpui::Point<Pixels>,
3681 scroll_pixel_position: gpui::Point<Pixels>,
3682 newest_selection_head: Option<DisplayPoint>,
3683 start_row: DisplayRow,
3684 line_layouts: &[LineWithInvisibles],
3685 line_height: Pixels,
3686 em_width: Pixels,
3687 cx: &mut WindowContext,
3688 ) {
3689 if !self.editor.focus_handle(cx).is_focused(cx) {
3690 return;
3691 }
3692 let Some(newest_selection_head) = newest_selection_head else {
3693 return;
3694 };
3695 let selection_row = newest_selection_head.row();
3696 if selection_row < start_row {
3697 return;
3698 }
3699 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
3700 else {
3701 return;
3702 };
3703
3704 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
3705 - scroll_pixel_position.x
3706 + content_origin.x;
3707 let start_y =
3708 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
3709
3710 let max_size = size(
3711 (120. * em_width) // Default size
3712 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3713 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3714 (16. * line_height) // Default size
3715 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3716 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3717 );
3718
3719 let maybe_element = self.editor.update(cx, |editor, cx| {
3720 if let Some(popover) = editor.signature_help_state.popover_mut() {
3721 let element = popover.render(
3722 &self.style,
3723 max_size,
3724 editor.workspace.as_ref().map(|(w, _)| w.clone()),
3725 cx,
3726 );
3727 Some(element)
3728 } else {
3729 None
3730 }
3731 });
3732 if let Some(mut element) = maybe_element {
3733 let window_size = cx.viewport_size();
3734 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
3735 let mut point = point(start_x, start_y - size.height);
3736
3737 // Adjusting to ensure the popover does not overflow in the X-axis direction.
3738 if point.x + size.width >= window_size.width {
3739 point.x = window_size.width - size.width;
3740 }
3741
3742 cx.defer_draw(element, point, 1)
3743 }
3744 }
3745
3746 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
3747 cx.paint_layer(layout.hitbox.bounds, |cx| {
3748 let scroll_top = layout.position_map.snapshot.scroll_position().y;
3749 let gutter_bg = cx.theme().colors().editor_gutter_background;
3750 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
3751 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
3752
3753 if let EditorMode::Full = layout.mode {
3754 let mut active_rows = layout.active_rows.iter().peekable();
3755 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
3756 let mut end_row = start_row.0;
3757 while active_rows
3758 .peek()
3759 .map_or(false, |(active_row, has_selection)| {
3760 active_row.0 == end_row + 1
3761 && *has_selection == contains_non_empty_selection
3762 })
3763 {
3764 active_rows.next().unwrap();
3765 end_row += 1;
3766 }
3767
3768 if !contains_non_empty_selection {
3769 let highlight_h_range =
3770 match layout.position_map.snapshot.current_line_highlight {
3771 CurrentLineHighlight::Gutter => Some(Range {
3772 start: layout.hitbox.left(),
3773 end: layout.gutter_hitbox.right(),
3774 }),
3775 CurrentLineHighlight::Line => Some(Range {
3776 start: layout.text_hitbox.bounds.left(),
3777 end: layout.text_hitbox.bounds.right(),
3778 }),
3779 CurrentLineHighlight::All => Some(Range {
3780 start: layout.hitbox.left(),
3781 end: layout.hitbox.right(),
3782 }),
3783 CurrentLineHighlight::None => None,
3784 };
3785 if let Some(range) = highlight_h_range {
3786 let active_line_bg = cx.theme().colors().editor_active_line_background;
3787 let bounds = Bounds {
3788 origin: point(
3789 range.start,
3790 layout.hitbox.origin.y
3791 + (start_row.as_f32() - scroll_top)
3792 * layout.position_map.line_height,
3793 ),
3794 size: size(
3795 range.end - range.start,
3796 layout.position_map.line_height
3797 * (end_row - start_row.0 + 1) as f32,
3798 ),
3799 };
3800 cx.paint_quad(fill(bounds, active_line_bg));
3801 }
3802 }
3803 }
3804
3805 let mut paint_highlight =
3806 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
3807 let origin = point(
3808 layout.hitbox.origin.x,
3809 layout.hitbox.origin.y
3810 + (highlight_row_start.as_f32() - scroll_top)
3811 * layout.position_map.line_height,
3812 );
3813 let size = size(
3814 layout.hitbox.size.width,
3815 layout.position_map.line_height
3816 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
3817 );
3818 cx.paint_quad(fill(Bounds { origin, size }, color));
3819 };
3820
3821 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
3822 for (&new_row, &new_color) in &layout.highlighted_rows {
3823 match &mut current_paint {
3824 Some((current_color, current_range)) => {
3825 let current_color = *current_color;
3826 let new_range_started = current_color != new_color
3827 || current_range.end.next_row() != new_row;
3828 if new_range_started {
3829 paint_highlight(
3830 current_range.start,
3831 current_range.end,
3832 current_color,
3833 );
3834 current_paint = Some((new_color, new_row..new_row));
3835 continue;
3836 } else {
3837 current_range.end = current_range.end.next_row();
3838 }
3839 }
3840 None => current_paint = Some((new_color, new_row..new_row)),
3841 };
3842 }
3843 if let Some((color, range)) = current_paint {
3844 paint_highlight(range.start, range.end, color);
3845 }
3846
3847 let scroll_left =
3848 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
3849
3850 for (wrap_position, active) in layout.wrap_guides.iter() {
3851 let x = (layout.text_hitbox.origin.x
3852 + *wrap_position
3853 + layout.position_map.em_width / 2.)
3854 - scroll_left;
3855
3856 let show_scrollbars = {
3857 let (scrollbar_x, scrollbar_y) = &layout.scrollbars_layout.as_xy();
3858
3859 scrollbar_x.as_ref().map_or(false, |sx| sx.visible)
3860 || scrollbar_y.as_ref().map_or(false, |sy| sy.visible)
3861 };
3862
3863 if x < layout.text_hitbox.origin.x
3864 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
3865 {
3866 continue;
3867 }
3868
3869 let color = if *active {
3870 cx.theme().colors().editor_active_wrap_guide
3871 } else {
3872 cx.theme().colors().editor_wrap_guide
3873 };
3874 cx.paint_quad(fill(
3875 Bounds {
3876 origin: point(x, layout.text_hitbox.origin.y),
3877 size: size(px(1.), layout.text_hitbox.size.height),
3878 },
3879 color,
3880 ));
3881 }
3882 }
3883 })
3884 }
3885
3886 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3887 let Some(indent_guides) = &layout.indent_guides else {
3888 return;
3889 };
3890
3891 let faded_color = |color: Hsla, alpha: f32| {
3892 let mut faded = color;
3893 faded.a = alpha;
3894 faded
3895 };
3896
3897 for indent_guide in indent_guides {
3898 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3899 let settings = indent_guide.settings;
3900
3901 // TODO fixed for now, expose them through themes later
3902 const INDENT_AWARE_ALPHA: f32 = 0.2;
3903 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3904 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3905 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3906
3907 let line_color = match (settings.coloring, indent_guide.active) {
3908 (IndentGuideColoring::Disabled, _) => None,
3909 (IndentGuideColoring::Fixed, false) => {
3910 Some(cx.theme().colors().editor_indent_guide)
3911 }
3912 (IndentGuideColoring::Fixed, true) => {
3913 Some(cx.theme().colors().editor_indent_guide_active)
3914 }
3915 (IndentGuideColoring::IndentAware, false) => {
3916 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3917 }
3918 (IndentGuideColoring::IndentAware, true) => {
3919 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3920 }
3921 };
3922
3923 let background_color = match (settings.background_coloring, indent_guide.active) {
3924 (IndentGuideBackgroundColoring::Disabled, _) => None,
3925 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3926 indent_accent_colors,
3927 INDENT_AWARE_BACKGROUND_ALPHA,
3928 )),
3929 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3930 indent_accent_colors,
3931 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3932 )),
3933 };
3934
3935 let requested_line_width = if indent_guide.active {
3936 settings.active_line_width
3937 } else {
3938 settings.line_width
3939 }
3940 .clamp(1, 10);
3941 let mut line_indicator_width = 0.;
3942 if let Some(color) = line_color {
3943 cx.paint_quad(fill(
3944 Bounds {
3945 origin: indent_guide.origin,
3946 size: size(px(requested_line_width as f32), indent_guide.length),
3947 },
3948 color,
3949 ));
3950 line_indicator_width = requested_line_width as f32;
3951 }
3952
3953 if let Some(color) = background_color {
3954 let width = indent_guide.single_indent_width - px(line_indicator_width);
3955 cx.paint_quad(fill(
3956 Bounds {
3957 origin: point(
3958 indent_guide.origin.x + px(line_indicator_width),
3959 indent_guide.origin.y,
3960 ),
3961 size: size(width, indent_guide.length),
3962 },
3963 color,
3964 ));
3965 }
3966 }
3967 }
3968
3969 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3970 let is_singleton = self.editor.read(cx).is_singleton(cx);
3971
3972 let line_height = layout.position_map.line_height;
3973 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3974
3975 for LineNumberLayout {
3976 shaped_line,
3977 hitbox,
3978 display_row,
3979 } in layout.line_numbers.values()
3980 {
3981 let Some(hitbox) = hitbox else {
3982 continue;
3983 };
3984
3985 let is_active = layout.active_rows.contains_key(&display_row);
3986
3987 let color = if is_active {
3988 cx.theme().colors().editor_active_line_number
3989 } else if !is_singleton && hitbox.is_hovered(cx) {
3990 cx.theme().colors().editor_hover_line_number
3991 } else {
3992 cx.theme().colors().editor_line_number
3993 };
3994
3995 let Some(line) = self
3996 .shape_line_number(shaped_line.text.clone(), color, cx)
3997 .log_err()
3998 else {
3999 continue;
4000 };
4001 let Some(()) = line.paint(hitbox.origin, line_height, cx).log_err() else {
4002 continue;
4003 };
4004 // In singleton buffers, we select corresponding lines on the line number click, so use | -like cursor.
4005 // In multi buffers, we open file at the line number clicked, so use a pointing hand cursor.
4006 if is_singleton {
4007 cx.set_cursor_style(CursorStyle::IBeam, hitbox);
4008 } else {
4009 cx.set_cursor_style(CursorStyle::PointingHand, hitbox);
4010 }
4011 }
4012 }
4013
4014 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
4015 if layout.display_hunks.is_empty() {
4016 return;
4017 }
4018
4019 let line_height = layout.position_map.line_height;
4020 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4021 for (hunk, hitbox) in &layout.display_hunks {
4022 let hunk_to_paint = match hunk {
4023 DisplayDiffHunk::Folded { .. } => {
4024 let hunk_bounds = Self::diff_hunk_bounds(
4025 &layout.position_map.snapshot,
4026 line_height,
4027 layout.gutter_hitbox.bounds,
4028 hunk,
4029 );
4030 Some((
4031 hunk_bounds,
4032 cx.theme().status().modified,
4033 Corners::all(px(0.)),
4034 ))
4035 }
4036 DisplayDiffHunk::Unfolded { status, .. } => {
4037 hitbox.as_ref().map(|hunk_hitbox| match status {
4038 DiffHunkStatus::Added => (
4039 hunk_hitbox.bounds,
4040 cx.theme().status().created,
4041 Corners::all(px(0.)),
4042 ),
4043 DiffHunkStatus::Modified => (
4044 hunk_hitbox.bounds,
4045 cx.theme().status().modified,
4046 Corners::all(px(0.)),
4047 ),
4048 DiffHunkStatus::Removed => (
4049 Bounds::new(
4050 point(
4051 hunk_hitbox.origin.x - hunk_hitbox.size.width,
4052 hunk_hitbox.origin.y,
4053 ),
4054 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
4055 ),
4056 cx.theme().status().deleted,
4057 Corners::all(1. * line_height),
4058 ),
4059 })
4060 }
4061 };
4062
4063 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
4064 cx.paint_quad(quad(
4065 hunk_bounds,
4066 corner_radii,
4067 background_color,
4068 Edges::default(),
4069 transparent_black(),
4070 ));
4071 }
4072 }
4073 });
4074 }
4075
4076 pub(super) fn diff_hunk_bounds(
4077 snapshot: &EditorSnapshot,
4078 line_height: Pixels,
4079 gutter_bounds: Bounds<Pixels>,
4080 hunk: &DisplayDiffHunk,
4081 ) -> Bounds<Pixels> {
4082 let scroll_position = snapshot.scroll_position();
4083 let scroll_top = scroll_position.y * line_height;
4084
4085 match hunk {
4086 DisplayDiffHunk::Folded { display_row, .. } => {
4087 let start_y = display_row.as_f32() * line_height - scroll_top;
4088 let end_y = start_y + line_height;
4089
4090 let width = Self::diff_hunk_strip_width(line_height);
4091 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4092 let highlight_size = size(width, end_y - start_y);
4093 Bounds::new(highlight_origin, highlight_size)
4094 }
4095 DisplayDiffHunk::Unfolded {
4096 display_row_range,
4097 status,
4098 ..
4099 } => match status {
4100 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
4101 let start_row = display_row_range.start;
4102 let end_row = display_row_range.end;
4103 // If we're in a multibuffer, row range span might include an
4104 // excerpt header, so if we were to draw the marker straight away,
4105 // the hunk might include the rows of that header.
4106 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
4107 // Instead, we simply check whether the range we're dealing with includes
4108 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
4109 let end_row_in_current_excerpt = snapshot
4110 .blocks_in_range(start_row..end_row)
4111 .find_map(|(start_row, block)| {
4112 if matches!(block, Block::ExcerptBoundary { .. }) {
4113 Some(start_row)
4114 } else {
4115 None
4116 }
4117 })
4118 .unwrap_or(end_row);
4119
4120 let start_y = start_row.as_f32() * line_height - scroll_top;
4121 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
4122
4123 let width = Self::diff_hunk_strip_width(line_height);
4124 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4125 let highlight_size = size(width, end_y - start_y);
4126 Bounds::new(highlight_origin, highlight_size)
4127 }
4128 DiffHunkStatus::Removed => {
4129 let row = display_row_range.start;
4130
4131 let offset = line_height / 2.;
4132 let start_y = row.as_f32() * line_height - offset - scroll_top;
4133 let end_y = start_y + line_height;
4134
4135 let width = (0.35 * line_height).floor();
4136 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4137 let highlight_size = size(width, end_y - start_y);
4138 Bounds::new(highlight_origin, highlight_size)
4139 }
4140 },
4141 }
4142 }
4143
4144 /// Returns the width of the diff strip that will be displayed in the gutter.
4145 pub(super) fn diff_hunk_strip_width(line_height: Pixels) -> Pixels {
4146 // We floor the value to prevent pixel rounding.
4147 (0.275 * line_height).floor()
4148 }
4149
4150 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4151 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4152 cx.with_element_namespace("crease_toggles", |cx| {
4153 for crease_toggle in layout.crease_toggles.iter_mut().flatten() {
4154 crease_toggle.paint(cx);
4155 }
4156 });
4157
4158 for test_indicator in layout.test_indicators.iter_mut() {
4159 test_indicator.paint(cx);
4160 }
4161
4162 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
4163 indicator.paint(cx);
4164 }
4165 });
4166 }
4167
4168 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4169 for (_, hunk_hitbox) in &layout.display_hunks {
4170 if let Some(hunk_hitbox) = hunk_hitbox {
4171 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
4172 }
4173 }
4174
4175 let show_git_gutter = layout
4176 .position_map
4177 .snapshot
4178 .show_git_diff_gutter
4179 .unwrap_or_else(|| {
4180 matches!(
4181 ProjectSettings::get_global(cx).git.git_gutter,
4182 Some(GitGutterSetting::TrackedFiles)
4183 )
4184 });
4185 if show_git_gutter {
4186 Self::paint_diff_hunks(layout, cx)
4187 }
4188
4189 let highlight_width = 0.275 * layout.position_map.line_height;
4190 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
4191 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4192 for (range, color) in &layout.highlighted_gutter_ranges {
4193 let start_row = if range.start.row() < layout.visible_display_row_range.start {
4194 layout.visible_display_row_range.start - DisplayRow(1)
4195 } else {
4196 range.start.row()
4197 };
4198 let end_row = if range.end.row() > layout.visible_display_row_range.end {
4199 layout.visible_display_row_range.end + DisplayRow(1)
4200 } else {
4201 range.end.row()
4202 };
4203
4204 let start_y = layout.gutter_hitbox.top()
4205 + start_row.0 as f32 * layout.position_map.line_height
4206 - layout.position_map.scroll_pixel_position.y;
4207 let end_y = layout.gutter_hitbox.top()
4208 + (end_row.0 + 1) as f32 * layout.position_map.line_height
4209 - layout.position_map.scroll_pixel_position.y;
4210 let bounds = Bounds::from_corners(
4211 point(layout.gutter_hitbox.left(), start_y),
4212 point(layout.gutter_hitbox.left() + highlight_width, end_y),
4213 );
4214 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
4215 }
4216 });
4217 }
4218
4219 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4220 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
4221 return;
4222 };
4223
4224 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4225 for mut blame_element in blamed_display_rows.into_iter() {
4226 blame_element.paint(cx);
4227 }
4228 })
4229 }
4230
4231 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4232 cx.with_content_mask(
4233 Some(ContentMask {
4234 bounds: layout.text_hitbox.bounds,
4235 }),
4236 |cx| {
4237 let cursor_style = if self
4238 .editor
4239 .read(cx)
4240 .hovered_link_state
4241 .as_ref()
4242 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
4243 {
4244 CursorStyle::PointingHand
4245 } else {
4246 CursorStyle::IBeam
4247 };
4248 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
4249
4250 let invisible_display_ranges = self.paint_highlights(layout, cx);
4251 self.paint_lines(&invisible_display_ranges, layout, cx);
4252 self.paint_redactions(layout, cx);
4253 self.paint_cursors(layout, cx);
4254 self.paint_inline_blame(layout, cx);
4255 cx.with_element_namespace("crease_trailers", |cx| {
4256 for trailer in layout.crease_trailers.iter_mut().flatten() {
4257 trailer.element.paint(cx);
4258 }
4259 });
4260 },
4261 )
4262 }
4263
4264 fn paint_highlights(
4265 &mut self,
4266 layout: &mut EditorLayout,
4267 cx: &mut WindowContext,
4268 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
4269 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4270 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
4271 let line_end_overshoot = 0.15 * layout.position_map.line_height;
4272 for (range, color) in &layout.highlighted_ranges {
4273 self.paint_highlighted_range(
4274 range.clone(),
4275 *color,
4276 Pixels::ZERO,
4277 line_end_overshoot,
4278 layout,
4279 cx,
4280 );
4281 }
4282
4283 let corner_radius = 0.15 * layout.position_map.line_height;
4284
4285 for (player_color, selections) in &layout.selections {
4286 for selection in selections.iter() {
4287 self.paint_highlighted_range(
4288 selection.range.clone(),
4289 player_color.selection,
4290 corner_radius,
4291 corner_radius * 2.,
4292 layout,
4293 cx,
4294 );
4295
4296 if selection.is_local && !selection.range.is_empty() {
4297 invisible_display_ranges.push(selection.range.clone());
4298 }
4299 }
4300 }
4301 invisible_display_ranges
4302 })
4303 }
4304
4305 fn paint_lines(
4306 &mut self,
4307 invisible_display_ranges: &[Range<DisplayPoint>],
4308 layout: &mut EditorLayout,
4309 cx: &mut WindowContext,
4310 ) {
4311 let whitespace_setting = self
4312 .editor
4313 .read(cx)
4314 .buffer
4315 .read(cx)
4316 .settings_at(0, cx)
4317 .show_whitespaces;
4318
4319 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
4320 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
4321 line_with_invisibles.draw(
4322 layout,
4323 row,
4324 layout.content_origin,
4325 whitespace_setting,
4326 invisible_display_ranges,
4327 cx,
4328 )
4329 }
4330
4331 for line_element in &mut layout.line_elements {
4332 line_element.paint(cx);
4333 }
4334 }
4335
4336 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
4337 if layout.redacted_ranges.is_empty() {
4338 return;
4339 }
4340
4341 let line_end_overshoot = layout.line_end_overshoot();
4342
4343 // A softer than perfect black
4344 let redaction_color = gpui::rgb(0x0e1111);
4345
4346 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4347 for range in layout.redacted_ranges.iter() {
4348 self.paint_highlighted_range(
4349 range.clone(),
4350 redaction_color.into(),
4351 Pixels::ZERO,
4352 line_end_overshoot,
4353 layout,
4354 cx,
4355 );
4356 }
4357 });
4358 }
4359
4360 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4361 for cursor in &mut layout.visible_cursors {
4362 cursor.paint(layout.content_origin, cx);
4363 }
4364 }
4365
4366 fn paint_scrollbars(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4367 let (scrollbar_x, scrollbar_y) = layout.scrollbars_layout.as_xy();
4368
4369 if let Some(scrollbar_layout) = scrollbar_x {
4370 let hitbox = scrollbar_layout.hitbox.clone();
4371 let text_unit_size = scrollbar_layout.text_unit_size;
4372 let visible_range = scrollbar_layout.visible_range.clone();
4373 let thumb_bounds = scrollbar_layout.thumb_bounds();
4374
4375 if scrollbar_layout.visible {
4376 cx.paint_layer(hitbox.bounds, |cx| {
4377 cx.paint_quad(quad(
4378 hitbox.bounds,
4379 Corners::default(),
4380 cx.theme().colors().scrollbar_track_background,
4381 Edges {
4382 top: Pixels::ZERO,
4383 right: Pixels::ZERO,
4384 bottom: Pixels::ZERO,
4385 left: Pixels::ZERO,
4386 },
4387 cx.theme().colors().scrollbar_track_border,
4388 ));
4389
4390 cx.paint_quad(quad(
4391 thumb_bounds,
4392 Corners::default(),
4393 cx.theme().colors().scrollbar_thumb_background,
4394 Edges {
4395 top: Pixels::ZERO,
4396 right: Pixels::ZERO,
4397 bottom: Pixels::ZERO,
4398 left: ScrollbarLayout::BORDER_WIDTH,
4399 },
4400 cx.theme().colors().scrollbar_thumb_border,
4401 ));
4402 })
4403 }
4404
4405 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4406
4407 cx.on_mouse_event({
4408 let editor = self.editor.clone();
4409
4410 // there may be a way to avoid this clone
4411 let hitbox = hitbox.clone();
4412
4413 let mut mouse_position = cx.mouse_position();
4414 move |event: &MouseMoveEvent, phase, cx| {
4415 if phase == DispatchPhase::Capture {
4416 return;
4417 }
4418
4419 editor.update(cx, |editor, cx| {
4420 if event.pressed_button == Some(MouseButton::Left)
4421 && editor
4422 .scroll_manager
4423 .is_dragging_scrollbar(Axis::Horizontal)
4424 {
4425 let x = mouse_position.x;
4426 let new_x = event.position.x;
4427 if (hitbox.left()..hitbox.right()).contains(&x) {
4428 let mut position = editor.scroll_position(cx);
4429
4430 position.x += (new_x - x) / text_unit_size;
4431 if position.x < 0.0 {
4432 position.x = 0.0;
4433 }
4434 editor.set_scroll_position(position, cx);
4435 }
4436
4437 cx.stop_propagation();
4438 } else {
4439 editor.scroll_manager.set_is_dragging_scrollbar(
4440 Axis::Horizontal,
4441 false,
4442 cx,
4443 );
4444
4445 if hitbox.is_hovered(cx) {
4446 editor.scroll_manager.show_scrollbar(cx);
4447 }
4448 }
4449 mouse_position = event.position;
4450 })
4451 }
4452 });
4453
4454 if self
4455 .editor
4456 .read(cx)
4457 .scroll_manager
4458 .is_dragging_scrollbar(Axis::Horizontal)
4459 {
4460 cx.on_mouse_event({
4461 let editor = self.editor.clone();
4462 move |_: &MouseUpEvent, phase, cx| {
4463 if phase == DispatchPhase::Capture {
4464 return;
4465 }
4466
4467 editor.update(cx, |editor, cx| {
4468 editor.scroll_manager.set_is_dragging_scrollbar(
4469 Axis::Horizontal,
4470 false,
4471 cx,
4472 );
4473 cx.stop_propagation();
4474 });
4475 }
4476 });
4477 } else {
4478 cx.on_mouse_event({
4479 let editor = self.editor.clone();
4480
4481 move |event: &MouseDownEvent, phase, cx| {
4482 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4483 return;
4484 }
4485
4486 editor.update(cx, |editor, cx| {
4487 editor.scroll_manager.set_is_dragging_scrollbar(
4488 Axis::Horizontal,
4489 true,
4490 cx,
4491 );
4492
4493 let x = event.position.x;
4494
4495 if x < thumb_bounds.left() || thumb_bounds.right() < x {
4496 let center_row =
4497 ((x - hitbox.left()) / text_unit_size).round() as u32;
4498 let top_row = center_row.saturating_sub(
4499 (visible_range.end - visible_range.start) as u32 / 2,
4500 );
4501
4502 let mut position = editor.scroll_position(cx);
4503 position.x = top_row as f32;
4504
4505 editor.set_scroll_position(position, cx);
4506 } else {
4507 editor.scroll_manager.show_scrollbar(cx);
4508 }
4509
4510 cx.stop_propagation();
4511 });
4512 }
4513 });
4514 }
4515 }
4516
4517 if let Some(scrollbar_layout) = scrollbar_y {
4518 let hitbox = scrollbar_layout.hitbox.clone();
4519 let text_unit_size = scrollbar_layout.text_unit_size;
4520 let visible_range = scrollbar_layout.visible_range.clone();
4521 let thumb_bounds = scrollbar_layout.thumb_bounds();
4522
4523 if scrollbar_layout.visible {
4524 cx.paint_layer(hitbox.bounds, |cx| {
4525 cx.paint_quad(quad(
4526 hitbox.bounds,
4527 Corners::default(),
4528 cx.theme().colors().scrollbar_track_background,
4529 Edges {
4530 top: Pixels::ZERO,
4531 right: Pixels::ZERO,
4532 bottom: Pixels::ZERO,
4533 left: ScrollbarLayout::BORDER_WIDTH,
4534 },
4535 cx.theme().colors().scrollbar_track_border,
4536 ));
4537
4538 let fast_markers =
4539 self.collect_fast_scrollbar_markers(layout, &scrollbar_layout, cx);
4540 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
4541 self.refresh_slow_scrollbar_markers(layout, &scrollbar_layout, cx);
4542
4543 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
4544 for marker in markers.iter().chain(&fast_markers) {
4545 let mut marker = marker.clone();
4546 marker.bounds.origin += hitbox.origin;
4547 cx.paint_quad(marker);
4548 }
4549
4550 cx.paint_quad(quad(
4551 thumb_bounds,
4552 Corners::default(),
4553 cx.theme().colors().scrollbar_thumb_background,
4554 Edges {
4555 top: Pixels::ZERO,
4556 right: Pixels::ZERO,
4557 bottom: Pixels::ZERO,
4558 left: ScrollbarLayout::BORDER_WIDTH,
4559 },
4560 cx.theme().colors().scrollbar_thumb_border,
4561 ));
4562 });
4563 }
4564
4565 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4566
4567 cx.on_mouse_event({
4568 let editor = self.editor.clone();
4569
4570 let hitbox = hitbox.clone();
4571
4572 let mut mouse_position = cx.mouse_position();
4573 move |event: &MouseMoveEvent, phase, cx| {
4574 if phase == DispatchPhase::Capture {
4575 return;
4576 }
4577
4578 editor.update(cx, |editor, cx| {
4579 if event.pressed_button == Some(MouseButton::Left)
4580 && editor.scroll_manager.is_dragging_scrollbar(Axis::Vertical)
4581 {
4582 let y = mouse_position.y;
4583 let new_y = event.position.y;
4584 if (hitbox.top()..hitbox.bottom()).contains(&y) {
4585 let mut position = editor.scroll_position(cx);
4586 position.y += (new_y - y) / text_unit_size;
4587 if position.y < 0.0 {
4588 position.y = 0.0;
4589 }
4590 editor.set_scroll_position(position, cx);
4591 }
4592 } else {
4593 editor.scroll_manager.set_is_dragging_scrollbar(
4594 Axis::Vertical,
4595 false,
4596 cx,
4597 );
4598
4599 if hitbox.is_hovered(cx) {
4600 editor.scroll_manager.show_scrollbar(cx);
4601 }
4602 }
4603 mouse_position = event.position;
4604 })
4605 }
4606 });
4607
4608 if self
4609 .editor
4610 .read(cx)
4611 .scroll_manager
4612 .is_dragging_scrollbar(Axis::Vertical)
4613 {
4614 cx.on_mouse_event({
4615 let editor = self.editor.clone();
4616 move |_: &MouseUpEvent, phase, cx| {
4617 if phase == DispatchPhase::Capture {
4618 return;
4619 }
4620
4621 editor.update(cx, |editor, cx| {
4622 editor.scroll_manager.set_is_dragging_scrollbar(
4623 Axis::Vertical,
4624 false,
4625 cx,
4626 );
4627 cx.stop_propagation();
4628 });
4629 }
4630 });
4631 } else {
4632 cx.on_mouse_event({
4633 let editor = self.editor.clone();
4634
4635 move |event: &MouseDownEvent, phase, cx| {
4636 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4637 return;
4638 }
4639
4640 editor.update(cx, |editor, cx| {
4641 editor.scroll_manager.set_is_dragging_scrollbar(
4642 Axis::Vertical,
4643 true,
4644 cx,
4645 );
4646
4647 let y = event.position.y;
4648 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
4649 let center_row =
4650 ((y - hitbox.top()) / text_unit_size).round() as u32;
4651 let top_row = center_row.saturating_sub(
4652 (visible_range.end - visible_range.start) as u32 / 2,
4653 );
4654 let mut position = editor.scroll_position(cx);
4655 position.y = top_row as f32;
4656 editor.set_scroll_position(position, cx);
4657 } else {
4658 editor.scroll_manager.show_scrollbar(cx);
4659 }
4660
4661 cx.stop_propagation();
4662 });
4663 }
4664 });
4665 }
4666 }
4667 }
4668
4669 fn collect_fast_scrollbar_markers(
4670 &self,
4671 layout: &EditorLayout,
4672 scrollbar_layout: &ScrollbarLayout,
4673 cx: &mut WindowContext,
4674 ) -> Vec<PaintQuad> {
4675 const LIMIT: usize = 100;
4676 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
4677 return vec![];
4678 }
4679 let cursor_ranges = layout
4680 .cursors
4681 .iter()
4682 .map(|(point, color)| ColoredRange {
4683 start: point.row(),
4684 end: point.row(),
4685 color: *color,
4686 })
4687 .collect_vec();
4688 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
4689 }
4690
4691 fn refresh_slow_scrollbar_markers(
4692 &self,
4693 layout: &EditorLayout,
4694 scrollbar_layout: &ScrollbarLayout,
4695 cx: &mut WindowContext,
4696 ) {
4697 self.editor.update(cx, |editor, cx| {
4698 if !editor.is_singleton(cx)
4699 || !editor
4700 .scrollbar_marker_state
4701 .should_refresh(scrollbar_layout.hitbox.size)
4702 {
4703 return;
4704 }
4705
4706 let scrollbar_layout = scrollbar_layout.clone();
4707 let background_highlights = editor.background_highlights.clone();
4708 let snapshot = layout.position_map.snapshot.clone();
4709 let theme = cx.theme().clone();
4710 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
4711
4712 editor.scrollbar_marker_state.dirty = false;
4713 editor.scrollbar_marker_state.pending_refresh =
4714 Some(cx.spawn(|editor, mut cx| async move {
4715 let scrollbar_size = scrollbar_layout.hitbox.size;
4716 let scrollbar_markers = cx
4717 .background_executor()
4718 .spawn(async move {
4719 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
4720 let mut marker_quads = Vec::new();
4721 if scrollbar_settings.git_diff {
4722 let marker_row_ranges = snapshot
4723 .diff_map
4724 .diff_hunks(&snapshot.buffer_snapshot)
4725 .map(|hunk| {
4726 let start_display_row =
4727 MultiBufferPoint::new(hunk.row_range.start.0, 0)
4728 .to_display_point(&snapshot.display_snapshot)
4729 .row();
4730 let mut end_display_row =
4731 MultiBufferPoint::new(hunk.row_range.end.0, 0)
4732 .to_display_point(&snapshot.display_snapshot)
4733 .row();
4734 if end_display_row != start_display_row {
4735 end_display_row.0 -= 1;
4736 }
4737 let color = match hunk_status(&hunk) {
4738 DiffHunkStatus::Added => theme.status().created,
4739 DiffHunkStatus::Modified => theme.status().modified,
4740 DiffHunkStatus::Removed => theme.status().deleted,
4741 };
4742 ColoredRange {
4743 start: start_display_row,
4744 end: end_display_row,
4745 color,
4746 }
4747 });
4748
4749 marker_quads.extend(
4750 scrollbar_layout
4751 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
4752 );
4753 }
4754
4755 for (background_highlight_id, (_, background_ranges)) in
4756 background_highlights.iter()
4757 {
4758 let is_search_highlights = *background_highlight_id
4759 == TypeId::of::<BufferSearchHighlights>();
4760 let is_symbol_occurrences = *background_highlight_id
4761 == TypeId::of::<DocumentHighlightRead>()
4762 || *background_highlight_id
4763 == TypeId::of::<DocumentHighlightWrite>();
4764 if (is_search_highlights && scrollbar_settings.search_results)
4765 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
4766 {
4767 let mut color = theme.status().info;
4768 if is_symbol_occurrences {
4769 color.fade_out(0.5);
4770 }
4771 let marker_row_ranges = background_ranges.iter().map(|range| {
4772 let display_start = range
4773 .start
4774 .to_display_point(&snapshot.display_snapshot);
4775 let display_end =
4776 range.end.to_display_point(&snapshot.display_snapshot);
4777 ColoredRange {
4778 start: display_start.row(),
4779 end: display_end.row(),
4780 color,
4781 }
4782 });
4783 marker_quads.extend(
4784 scrollbar_layout
4785 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
4786 );
4787 }
4788 }
4789
4790 if scrollbar_settings.diagnostics != ScrollbarDiagnostics::None {
4791 let diagnostics = snapshot
4792 .buffer_snapshot
4793 .diagnostics_in_range(Point::zero()..max_point, false)
4794 .map(|DiagnosticEntry { diagnostic, range }| DiagnosticEntry {
4795 diagnostic,
4796 range: range.to_point(&snapshot.buffer_snapshot),
4797 })
4798 // Don't show diagnostics the user doesn't care about
4799 .filter(|diagnostic| {
4800 match (
4801 scrollbar_settings.diagnostics,
4802 diagnostic.diagnostic.severity,
4803 ) {
4804 (ScrollbarDiagnostics::All, _) => true,
4805 (
4806 ScrollbarDiagnostics::Error,
4807 DiagnosticSeverity::ERROR,
4808 ) => true,
4809 (
4810 ScrollbarDiagnostics::Warning,
4811 DiagnosticSeverity::ERROR
4812 | DiagnosticSeverity::WARNING,
4813 ) => true,
4814 (
4815 ScrollbarDiagnostics::Information,
4816 DiagnosticSeverity::ERROR
4817 | DiagnosticSeverity::WARNING
4818 | DiagnosticSeverity::INFORMATION,
4819 ) => true,
4820 (_, _) => false,
4821 }
4822 })
4823 // We want to sort by severity, in order to paint the most severe diagnostics last.
4824 .sorted_by_key(|diagnostic| {
4825 std::cmp::Reverse(diagnostic.diagnostic.severity)
4826 });
4827
4828 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
4829 let start_display = diagnostic
4830 .range
4831 .start
4832 .to_display_point(&snapshot.display_snapshot);
4833 let end_display = diagnostic
4834 .range
4835 .end
4836 .to_display_point(&snapshot.display_snapshot);
4837 let color = match diagnostic.diagnostic.severity {
4838 DiagnosticSeverity::ERROR => theme.status().error,
4839 DiagnosticSeverity::WARNING => theme.status().warning,
4840 DiagnosticSeverity::INFORMATION => theme.status().info,
4841 _ => theme.status().hint,
4842 };
4843 ColoredRange {
4844 start: start_display.row(),
4845 end: end_display.row(),
4846 color,
4847 }
4848 });
4849 marker_quads.extend(
4850 scrollbar_layout
4851 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
4852 );
4853 }
4854
4855 Arc::from(marker_quads)
4856 })
4857 .await;
4858
4859 editor.update(&mut cx, |editor, cx| {
4860 editor.scrollbar_marker_state.markers = scrollbar_markers;
4861 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
4862 editor.scrollbar_marker_state.pending_refresh = None;
4863 cx.notify();
4864 })?;
4865
4866 Ok(())
4867 }));
4868 });
4869 }
4870
4871 #[allow(clippy::too_many_arguments)]
4872 fn paint_highlighted_range(
4873 &self,
4874 range: Range<DisplayPoint>,
4875 color: Hsla,
4876 corner_radius: Pixels,
4877 line_end_overshoot: Pixels,
4878 layout: &EditorLayout,
4879 cx: &mut WindowContext,
4880 ) {
4881 let start_row = layout.visible_display_row_range.start;
4882 let end_row = layout.visible_display_row_range.end;
4883 if range.start != range.end {
4884 let row_range = if range.end.column() == 0 {
4885 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
4886 } else {
4887 cmp::max(range.start.row(), start_row)
4888 ..cmp::min(range.end.row().next_row(), end_row)
4889 };
4890
4891 let highlighted_range = HighlightedRange {
4892 color,
4893 line_height: layout.position_map.line_height,
4894 corner_radius,
4895 start_y: layout.content_origin.y
4896 + row_range.start.as_f32() * layout.position_map.line_height
4897 - layout.position_map.scroll_pixel_position.y,
4898 lines: row_range
4899 .iter_rows()
4900 .map(|row| {
4901 let line_layout =
4902 &layout.position_map.line_layouts[row.minus(start_row) as usize];
4903 HighlightedRangeLine {
4904 start_x: if row == range.start.row() {
4905 layout.content_origin.x
4906 + line_layout.x_for_index(range.start.column() as usize)
4907 - layout.position_map.scroll_pixel_position.x
4908 } else {
4909 layout.content_origin.x
4910 - layout.position_map.scroll_pixel_position.x
4911 },
4912 end_x: if row == range.end.row() {
4913 layout.content_origin.x
4914 + line_layout.x_for_index(range.end.column() as usize)
4915 - layout.position_map.scroll_pixel_position.x
4916 } else {
4917 layout.content_origin.x + line_layout.width + line_end_overshoot
4918 - layout.position_map.scroll_pixel_position.x
4919 },
4920 }
4921 })
4922 .collect(),
4923 };
4924
4925 highlighted_range.paint(layout.text_hitbox.bounds, cx);
4926 }
4927 }
4928
4929 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4930 if let Some(mut inline_blame) = layout.inline_blame.take() {
4931 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4932 inline_blame.paint(cx);
4933 })
4934 }
4935 }
4936
4937 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4938 for mut block in layout.blocks.drain(..) {
4939 block.element.paint(cx);
4940 }
4941 }
4942
4943 fn paint_inline_completion_popover(
4944 &mut self,
4945 layout: &mut EditorLayout,
4946 cx: &mut WindowContext,
4947 ) {
4948 if let Some(inline_completion_popover) = layout.inline_completion_popover.as_mut() {
4949 inline_completion_popover.paint(cx);
4950 }
4951 }
4952
4953 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4954 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
4955 mouse_context_menu.paint(cx);
4956 }
4957 }
4958
4959 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
4960 cx.on_mouse_event({
4961 let position_map = layout.position_map.clone();
4962 let editor = self.editor.clone();
4963 let hitbox = layout.hitbox.clone();
4964 let mut delta = ScrollDelta::default();
4965
4966 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
4967 // accidentally turn off their scrolling.
4968 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
4969
4970 move |event: &ScrollWheelEvent, phase, cx| {
4971 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
4972 delta = delta.coalesce(event.delta);
4973 editor.update(cx, |editor, cx| {
4974 let position_map: &PositionMap = &position_map;
4975
4976 let line_height = position_map.line_height;
4977 let max_glyph_width = position_map.em_width;
4978 let (delta, axis) = match delta {
4979 gpui::ScrollDelta::Pixels(mut pixels) => {
4980 //Trackpad
4981 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
4982 (pixels, axis)
4983 }
4984
4985 gpui::ScrollDelta::Lines(lines) => {
4986 //Not trackpad
4987 let pixels =
4988 point(lines.x * max_glyph_width, lines.y * line_height);
4989 (pixels, None)
4990 }
4991 };
4992
4993 let current_scroll_position = position_map.snapshot.scroll_position();
4994 let x = (current_scroll_position.x * max_glyph_width
4995 - (delta.x * scroll_sensitivity))
4996 / max_glyph_width;
4997 let y = (current_scroll_position.y * line_height
4998 - (delta.y * scroll_sensitivity))
4999 / line_height;
5000 let mut scroll_position =
5001 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
5002 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
5003 if forbid_vertical_scroll {
5004 scroll_position.y = current_scroll_position.y;
5005 }
5006
5007 if scroll_position != current_scroll_position {
5008 editor.scroll(scroll_position, axis, cx);
5009 cx.stop_propagation();
5010 } else if y < 0. {
5011 // Due to clamping, we may fail to detect cases of overscroll to the top;
5012 // We want the scroll manager to get an update in such cases and detect the change of direction
5013 // on the next frame.
5014 cx.notify();
5015 }
5016 });
5017 }
5018 }
5019 });
5020 }
5021
5022 fn paint_mouse_listeners(
5023 &mut self,
5024 layout: &EditorLayout,
5025 hovered_hunk: Option<HoveredHunk>,
5026 cx: &mut WindowContext,
5027 ) {
5028 self.paint_scroll_wheel_listener(layout, cx);
5029
5030 cx.on_mouse_event({
5031 let position_map = layout.position_map.clone();
5032 let editor = self.editor.clone();
5033 let text_hitbox = layout.text_hitbox.clone();
5034 let gutter_hitbox = layout.gutter_hitbox.clone();
5035 let line_numbers = layout.line_numbers.clone();
5036
5037 move |event: &MouseDownEvent, phase, cx| {
5038 if phase == DispatchPhase::Bubble {
5039 match event.button {
5040 MouseButton::Left => editor.update(cx, |editor, cx| {
5041 Self::mouse_left_down(
5042 editor,
5043 event,
5044 hovered_hunk.clone(),
5045 &position_map,
5046 &text_hitbox,
5047 &gutter_hitbox,
5048 line_numbers.as_ref(),
5049 cx,
5050 );
5051 }),
5052 MouseButton::Right => editor.update(cx, |editor, cx| {
5053 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
5054 }),
5055 MouseButton::Middle => editor.update(cx, |editor, cx| {
5056 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
5057 }),
5058 _ => {}
5059 };
5060 }
5061 }
5062 });
5063
5064 cx.on_mouse_event({
5065 let editor = self.editor.clone();
5066 let position_map = layout.position_map.clone();
5067 let text_hitbox = layout.text_hitbox.clone();
5068
5069 move |event: &MouseUpEvent, phase, cx| {
5070 if phase == DispatchPhase::Bubble {
5071 editor.update(cx, |editor, cx| {
5072 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
5073 });
5074 }
5075 }
5076 });
5077 cx.on_mouse_event({
5078 let position_map = layout.position_map.clone();
5079 let editor = self.editor.clone();
5080 let text_hitbox = layout.text_hitbox.clone();
5081 let gutter_hitbox = layout.gutter_hitbox.clone();
5082
5083 move |event: &MouseMoveEvent, phase, cx| {
5084 if phase == DispatchPhase::Bubble {
5085 editor.update(cx, |editor, cx| {
5086 if editor.hover_state.focused(cx) {
5087 return;
5088 }
5089 if event.pressed_button == Some(MouseButton::Left)
5090 || event.pressed_button == Some(MouseButton::Middle)
5091 {
5092 Self::mouse_dragged(
5093 editor,
5094 event,
5095 &position_map,
5096 text_hitbox.bounds,
5097 cx,
5098 )
5099 }
5100
5101 Self::mouse_moved(
5102 editor,
5103 event,
5104 &position_map,
5105 &text_hitbox,
5106 &gutter_hitbox,
5107 cx,
5108 )
5109 });
5110 }
5111 }
5112 });
5113 }
5114
5115 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
5116 bounds.top_right().x - self.style.scrollbar_width
5117 }
5118
5119 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
5120 let style = &self.style;
5121 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5122 let layout = cx
5123 .text_system()
5124 .shape_line(
5125 SharedString::from(" ".repeat(column)),
5126 font_size,
5127 &[TextRun {
5128 len: column,
5129 font: style.text.font(),
5130 color: Hsla::default(),
5131 background_color: None,
5132 underline: None,
5133 strikethrough: None,
5134 }],
5135 )
5136 .unwrap();
5137
5138 layout.width
5139 }
5140
5141 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
5142 let digit_count = (snapshot.widest_line_number() as f32).log10().floor() as usize + 1;
5143 self.column_pixels(digit_count, cx)
5144 }
5145
5146 fn shape_line_number(
5147 &self,
5148 text: SharedString,
5149 color: Hsla,
5150 cx: &WindowContext,
5151 ) -> anyhow::Result<ShapedLine> {
5152 let run = TextRun {
5153 len: text.len(),
5154 font: self.style.text.font(),
5155 color,
5156 background_color: None,
5157 underline: None,
5158 strikethrough: None,
5159 };
5160 cx.text_system().shape_line(
5161 text,
5162 self.style.text.font_size.to_pixels(cx.rem_size()),
5163 &[run],
5164 )
5165 }
5166}
5167
5168fn header_jump_data(
5169 snapshot: &EditorSnapshot,
5170 block_row_start: DisplayRow,
5171 height: u32,
5172 for_excerpt: &ExcerptInfo,
5173) -> JumpData {
5174 let range = &for_excerpt.range;
5175 let buffer = &for_excerpt.buffer;
5176 let jump_anchor = range
5177 .primary
5178 .as_ref()
5179 .map_or(range.context.start, |primary| primary.start);
5180
5181 let excerpt_start = range.context.start;
5182 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
5183 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
5184 0
5185 } else {
5186 let excerpt_start_row = language::ToPoint::to_point(&excerpt_start, buffer).row;
5187 jump_position.row - excerpt_start_row
5188 };
5189
5190 let line_offset_from_top = (block_row_start.0 + height + offset_from_excerpt_start)
5191 .saturating_sub(
5192 snapshot
5193 .scroll_anchor
5194 .scroll_position(&snapshot.display_snapshot)
5195 .y as u32,
5196 );
5197
5198 JumpData::MultiBufferPoint {
5199 excerpt_id: for_excerpt.id,
5200 anchor: jump_anchor,
5201 position: language::ToPoint::to_point(&jump_anchor, buffer),
5202 line_offset_from_top,
5203 }
5204}
5205
5206/// Returns true if there's a single edit, that's either a single character
5207/// insertion or a single line deletion.
5208fn hard_to_spot_single_edit(
5209 edits: &[(Range<Anchor>, String)],
5210 snapshot: &MultiBufferSnapshot,
5211) -> bool {
5212 if let [(range, new_text)] = edits {
5213 match new_text.len() {
5214 0 => {
5215 let range = range.to_point(&snapshot);
5216 range.start.row == range.end.row
5217 }
5218 1 => true,
5219 _ => false,
5220 }
5221 } else {
5222 false
5223 }
5224}
5225
5226fn all_edits_insertions_or_deletions(
5227 edits: &Vec<(Range<Anchor>, String)>,
5228 snapshot: &MultiBufferSnapshot,
5229) -> bool {
5230 let mut all_insertions = true;
5231 let mut all_deletions = true;
5232
5233 for (range, new_text) in edits.iter() {
5234 let range_is_empty = range.to_offset(&snapshot).is_empty();
5235 let text_is_empty = new_text.is_empty();
5236
5237 if range_is_empty != text_is_empty {
5238 if range_is_empty {
5239 all_deletions = false;
5240 } else {
5241 all_insertions = false;
5242 }
5243 } else {
5244 return false;
5245 }
5246
5247 if !all_insertions && !all_deletions {
5248 return false;
5249 }
5250 }
5251 all_insertions || all_deletions
5252}
5253
5254#[allow(clippy::too_many_arguments)]
5255fn prepaint_gutter_button(
5256 button: IconButton,
5257 row: DisplayRow,
5258 line_height: Pixels,
5259 gutter_dimensions: &GutterDimensions,
5260 scroll_pixel_position: gpui::Point<Pixels>,
5261 gutter_hitbox: &Hitbox,
5262 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
5263 cx: &mut WindowContext,
5264) -> AnyElement {
5265 let mut button = button.into_any_element();
5266 let available_space = size(
5267 AvailableSpace::MinContent,
5268 AvailableSpace::Definite(line_height),
5269 );
5270 let indicator_size = button.layout_as_root(available_space, cx);
5271
5272 let blame_width = gutter_dimensions.git_blame_entries_width;
5273 let gutter_width = rows_with_hunk_bounds
5274 .get(&row)
5275 .map(|bounds| bounds.size.width);
5276 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
5277
5278 let mut x = left_offset;
5279 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
5280 - indicator_size.width
5281 - left_offset;
5282 x += available_width / 2.;
5283
5284 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
5285 y += (line_height - indicator_size.height) / 2.;
5286
5287 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
5288 button
5289}
5290
5291fn render_inline_blame_entry(
5292 blame: &gpui::Model<GitBlame>,
5293 blame_entry: BlameEntry,
5294 style: &EditorStyle,
5295 workspace: Option<WeakView<Workspace>>,
5296 cx: &mut WindowContext,
5297) -> AnyElement {
5298 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
5299
5300 let author = blame_entry.author.as_deref().unwrap_or_default();
5301 let summary_enabled = ProjectSettings::get_global(cx)
5302 .git
5303 .show_inline_commit_summary();
5304
5305 let text = match blame_entry.summary.as_ref() {
5306 Some(summary) if summary_enabled => {
5307 format!("{}, {} - {}", author, relative_timestamp, summary)
5308 }
5309 _ => format!("{}, {}", author, relative_timestamp),
5310 };
5311
5312 let details = blame.read(cx).details_for_entry(&blame_entry);
5313
5314 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
5315
5316 h_flex()
5317 .id("inline-blame")
5318 .w_full()
5319 .font_family(style.text.font().family)
5320 .text_color(cx.theme().status().hint)
5321 .line_height(style.text.line_height)
5322 .child(Icon::new(IconName::FileGit).color(Color::Hint))
5323 .child(text)
5324 .gap_2()
5325 .hoverable_tooltip(move |_| tooltip.clone().into())
5326 .into_any()
5327}
5328
5329fn render_blame_entry(
5330 ix: usize,
5331 blame: &gpui::Model<GitBlame>,
5332 blame_entry: BlameEntry,
5333 style: &EditorStyle,
5334 last_used_color: &mut Option<(PlayerColor, Oid)>,
5335 editor: View<Editor>,
5336 cx: &mut WindowContext,
5337) -> AnyElement {
5338 let mut sha_color = cx
5339 .theme()
5340 .players()
5341 .color_for_participant(blame_entry.sha.into());
5342 // If the last color we used is the same as the one we get for this line, but
5343 // the commit SHAs are different, then we try again to get a different color.
5344 match *last_used_color {
5345 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
5346 let index: u32 = blame_entry.sha.into();
5347 sha_color = cx.theme().players().color_for_participant(index + 1);
5348 }
5349 _ => {}
5350 };
5351 last_used_color.replace((sha_color, blame_entry.sha));
5352
5353 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
5354
5355 let short_commit_id = blame_entry.sha.display_short();
5356
5357 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
5358 let name = util::truncate_and_trailoff(author_name, GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED);
5359
5360 let details = blame.read(cx).details_for_entry(&blame_entry);
5361
5362 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
5363
5364 let tooltip = cx.new_view(|_| {
5365 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
5366 });
5367
5368 h_flex()
5369 .w_full()
5370 .justify_between()
5371 .font_family(style.text.font().family)
5372 .line_height(style.text.line_height)
5373 .id(("blame", ix))
5374 .text_color(cx.theme().status().hint)
5375 .pr_2()
5376 .gap_2()
5377 .child(
5378 h_flex()
5379 .items_center()
5380 .gap_2()
5381 .child(div().text_color(sha_color.cursor).child(short_commit_id))
5382 .child(name),
5383 )
5384 .child(relative_timestamp)
5385 .on_mouse_down(MouseButton::Right, {
5386 let blame_entry = blame_entry.clone();
5387 let details = details.clone();
5388 move |event, cx| {
5389 deploy_blame_entry_context_menu(
5390 &blame_entry,
5391 details.as_ref(),
5392 editor.clone(),
5393 event.position,
5394 cx,
5395 );
5396 }
5397 })
5398 .hover(|style| style.bg(cx.theme().colors().element_hover))
5399 .when_some(
5400 details.and_then(|details| details.permalink),
5401 |this, url| {
5402 let url = url.clone();
5403 this.cursor_pointer().on_click(move |_, cx| {
5404 cx.stop_propagation();
5405 cx.open_url(url.as_str())
5406 })
5407 },
5408 )
5409 .hoverable_tooltip(move |_| tooltip.clone().into())
5410 .into_any()
5411}
5412
5413fn deploy_blame_entry_context_menu(
5414 blame_entry: &BlameEntry,
5415 details: Option<&CommitDetails>,
5416 editor: View<Editor>,
5417 position: gpui::Point<Pixels>,
5418 cx: &mut WindowContext,
5419) {
5420 let context_menu = ContextMenu::build(cx, move |menu, _| {
5421 let sha = format!("{}", blame_entry.sha);
5422 menu.on_blur_subscription(Subscription::new(|| {}))
5423 .entry("Copy commit SHA", None, move |cx| {
5424 cx.write_to_clipboard(ClipboardItem::new_string(sha.clone()));
5425 })
5426 .when_some(
5427 details.and_then(|details| details.permalink.clone()),
5428 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
5429 )
5430 });
5431
5432 editor.update(cx, move |editor, cx| {
5433 editor.mouse_context_menu = Some(MouseContextMenu::new(
5434 MenuPosition::PinnedToScreen(position),
5435 context_menu,
5436 cx,
5437 ));
5438 cx.notify();
5439 });
5440}
5441
5442#[derive(Debug)]
5443pub(crate) struct LineWithInvisibles {
5444 fragments: SmallVec<[LineFragment; 1]>,
5445 invisibles: Vec<Invisible>,
5446 len: usize,
5447 width: Pixels,
5448 font_size: Pixels,
5449}
5450
5451#[allow(clippy::large_enum_variant)]
5452enum LineFragment {
5453 Text(ShapedLine),
5454 Element {
5455 element: Option<AnyElement>,
5456 size: Size<Pixels>,
5457 len: usize,
5458 },
5459}
5460
5461impl fmt::Debug for LineFragment {
5462 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
5463 match self {
5464 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
5465 LineFragment::Element { size, len, .. } => f
5466 .debug_struct("Element")
5467 .field("size", size)
5468 .field("len", len)
5469 .finish(),
5470 }
5471 }
5472}
5473
5474impl LineWithInvisibles {
5475 #[allow(clippy::too_many_arguments)]
5476 fn from_chunks<'a>(
5477 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
5478 editor_style: &EditorStyle,
5479 max_line_len: usize,
5480 max_line_count: usize,
5481 editor_mode: EditorMode,
5482 text_width: Pixels,
5483 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
5484 cx: &mut WindowContext,
5485 ) -> Vec<Self> {
5486 let text_style = &editor_style.text;
5487 let mut layouts = Vec::with_capacity(max_line_count);
5488 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
5489 let mut line = String::new();
5490 let mut invisibles = Vec::new();
5491 let mut width = Pixels::ZERO;
5492 let mut len = 0;
5493 let mut styles = Vec::new();
5494 let mut non_whitespace_added = false;
5495 let mut row = 0;
5496 let mut line_exceeded_max_len = false;
5497 let font_size = text_style.font_size.to_pixels(cx.rem_size());
5498
5499 let ellipsis = SharedString::from("⋯");
5500
5501 for highlighted_chunk in chunks.chain([HighlightedChunk {
5502 text: "\n",
5503 style: None,
5504 is_tab: false,
5505 replacement: None,
5506 }]) {
5507 if let Some(replacement) = highlighted_chunk.replacement {
5508 if !line.is_empty() {
5509 let shaped_line = cx
5510 .text_system()
5511 .shape_line(line.clone().into(), font_size, &styles)
5512 .unwrap();
5513 width += shaped_line.width;
5514 len += shaped_line.len;
5515 fragments.push(LineFragment::Text(shaped_line));
5516 line.clear();
5517 styles.clear();
5518 }
5519
5520 match replacement {
5521 ChunkReplacement::Renderer(renderer) => {
5522 let available_width = if renderer.constrain_width {
5523 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
5524 ellipsis.clone()
5525 } else {
5526 SharedString::from(Arc::from(highlighted_chunk.text))
5527 };
5528 let shaped_line = cx
5529 .text_system()
5530 .shape_line(
5531 chunk,
5532 font_size,
5533 &[text_style.to_run(highlighted_chunk.text.len())],
5534 )
5535 .unwrap();
5536 AvailableSpace::Definite(shaped_line.width)
5537 } else {
5538 AvailableSpace::MinContent
5539 };
5540
5541 let mut element = (renderer.render)(&mut ChunkRendererContext {
5542 context: cx,
5543 max_width: text_width,
5544 });
5545 let line_height = text_style.line_height_in_pixels(cx.rem_size());
5546 let size = element.layout_as_root(
5547 size(available_width, AvailableSpace::Definite(line_height)),
5548 cx,
5549 );
5550
5551 width += size.width;
5552 len += highlighted_chunk.text.len();
5553 fragments.push(LineFragment::Element {
5554 element: Some(element),
5555 size,
5556 len: highlighted_chunk.text.len(),
5557 });
5558 }
5559 ChunkReplacement::Str(x) => {
5560 let text_style = if let Some(style) = highlighted_chunk.style {
5561 Cow::Owned(text_style.clone().highlight(style))
5562 } else {
5563 Cow::Borrowed(text_style)
5564 };
5565
5566 let run = TextRun {
5567 len: x.len(),
5568 font: text_style.font(),
5569 color: text_style.color,
5570 background_color: text_style.background_color,
5571 underline: text_style.underline,
5572 strikethrough: text_style.strikethrough,
5573 };
5574 let line_layout = cx
5575 .text_system()
5576 .shape_line(x, font_size, &[run])
5577 .unwrap()
5578 .with_len(highlighted_chunk.text.len());
5579
5580 width += line_layout.width;
5581 len += highlighted_chunk.text.len();
5582 fragments.push(LineFragment::Text(line_layout))
5583 }
5584 }
5585 } else {
5586 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
5587 if ix > 0 {
5588 let shaped_line = cx
5589 .text_system()
5590 .shape_line(line.clone().into(), font_size, &styles)
5591 .unwrap();
5592 width += shaped_line.width;
5593 len += shaped_line.len;
5594 fragments.push(LineFragment::Text(shaped_line));
5595 layouts.push(Self {
5596 width: mem::take(&mut width),
5597 len: mem::take(&mut len),
5598 fragments: mem::take(&mut fragments),
5599 invisibles: std::mem::take(&mut invisibles),
5600 font_size,
5601 });
5602
5603 line.clear();
5604 styles.clear();
5605 row += 1;
5606 line_exceeded_max_len = false;
5607 non_whitespace_added = false;
5608 if row == max_line_count {
5609 return layouts;
5610 }
5611 }
5612
5613 if !line_chunk.is_empty() && !line_exceeded_max_len {
5614 let text_style = if let Some(style) = highlighted_chunk.style {
5615 Cow::Owned(text_style.clone().highlight(style))
5616 } else {
5617 Cow::Borrowed(text_style)
5618 };
5619
5620 if line.len() + line_chunk.len() > max_line_len {
5621 let mut chunk_len = max_line_len - line.len();
5622 while !line_chunk.is_char_boundary(chunk_len) {
5623 chunk_len -= 1;
5624 }
5625 line_chunk = &line_chunk[..chunk_len];
5626 line_exceeded_max_len = true;
5627 }
5628
5629 styles.push(TextRun {
5630 len: line_chunk.len(),
5631 font: text_style.font(),
5632 color: text_style.color,
5633 background_color: text_style.background_color,
5634 underline: text_style.underline,
5635 strikethrough: text_style.strikethrough,
5636 });
5637
5638 if editor_mode == EditorMode::Full {
5639 // Line wrap pads its contents with fake whitespaces,
5640 // avoid printing them
5641 let is_soft_wrapped = is_row_soft_wrapped(row);
5642 if highlighted_chunk.is_tab {
5643 if non_whitespace_added || !is_soft_wrapped {
5644 invisibles.push(Invisible::Tab {
5645 line_start_offset: line.len(),
5646 line_end_offset: line.len() + line_chunk.len(),
5647 });
5648 }
5649 } else {
5650 invisibles.extend(line_chunk.char_indices().filter_map(
5651 |(index, c)| {
5652 let is_whitespace = c.is_whitespace();
5653 non_whitespace_added |= !is_whitespace;
5654 if is_whitespace
5655 && (non_whitespace_added || !is_soft_wrapped)
5656 {
5657 Some(Invisible::Whitespace {
5658 line_offset: line.len() + index,
5659 })
5660 } else {
5661 None
5662 }
5663 },
5664 ))
5665 }
5666 }
5667
5668 line.push_str(line_chunk);
5669 }
5670 }
5671 }
5672 }
5673
5674 layouts
5675 }
5676
5677 fn prepaint(
5678 &mut self,
5679 line_height: Pixels,
5680 scroll_pixel_position: gpui::Point<Pixels>,
5681 row: DisplayRow,
5682 content_origin: gpui::Point<Pixels>,
5683 line_elements: &mut SmallVec<[AnyElement; 1]>,
5684 cx: &mut WindowContext,
5685 ) {
5686 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
5687 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
5688 for fragment in &mut self.fragments {
5689 match fragment {
5690 LineFragment::Text(line) => {
5691 fragment_origin.x += line.width;
5692 }
5693 LineFragment::Element { element, size, .. } => {
5694 let mut element = element
5695 .take()
5696 .expect("you can't prepaint LineWithInvisibles twice");
5697
5698 // Center the element vertically within the line.
5699 let mut element_origin = fragment_origin;
5700 element_origin.y += (line_height - size.height) / 2.;
5701 element.prepaint_at(element_origin, cx);
5702 line_elements.push(element);
5703
5704 fragment_origin.x += size.width;
5705 }
5706 }
5707 }
5708 }
5709
5710 fn draw(
5711 &self,
5712 layout: &EditorLayout,
5713 row: DisplayRow,
5714 content_origin: gpui::Point<Pixels>,
5715 whitespace_setting: ShowWhitespaceSetting,
5716 selection_ranges: &[Range<DisplayPoint>],
5717 cx: &mut WindowContext,
5718 ) {
5719 let line_height = layout.position_map.line_height;
5720 let line_y = line_height
5721 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
5722
5723 let mut fragment_origin =
5724 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
5725
5726 for fragment in &self.fragments {
5727 match fragment {
5728 LineFragment::Text(line) => {
5729 line.paint(fragment_origin, line_height, cx).log_err();
5730 fragment_origin.x += line.width;
5731 }
5732 LineFragment::Element { size, .. } => {
5733 fragment_origin.x += size.width;
5734 }
5735 }
5736 }
5737
5738 self.draw_invisibles(
5739 selection_ranges,
5740 layout,
5741 content_origin,
5742 line_y,
5743 row,
5744 line_height,
5745 whitespace_setting,
5746 cx,
5747 );
5748 }
5749
5750 #[allow(clippy::too_many_arguments)]
5751 fn draw_invisibles(
5752 &self,
5753 selection_ranges: &[Range<DisplayPoint>],
5754 layout: &EditorLayout,
5755 content_origin: gpui::Point<Pixels>,
5756 line_y: Pixels,
5757 row: DisplayRow,
5758 line_height: Pixels,
5759 whitespace_setting: ShowWhitespaceSetting,
5760 cx: &mut WindowContext,
5761 ) {
5762 let extract_whitespace_info = |invisible: &Invisible| {
5763 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
5764 Invisible::Tab {
5765 line_start_offset,
5766 line_end_offset,
5767 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
5768 Invisible::Whitespace { line_offset } => {
5769 (*line_offset, line_offset + 1, &layout.space_invisible)
5770 }
5771 };
5772
5773 let x_offset = self.x_for_index(token_offset);
5774 let invisible_offset =
5775 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
5776 let origin = content_origin
5777 + gpui::point(
5778 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
5779 line_y,
5780 );
5781
5782 (
5783 [token_offset, token_end_offset],
5784 Box::new(move |cx: &mut WindowContext| {
5785 invisible_symbol.paint(origin, line_height, cx).log_err();
5786 }),
5787 )
5788 };
5789
5790 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
5791 match whitespace_setting {
5792 ShowWhitespaceSetting::None => (),
5793 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
5794 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
5795 let invisible_point = DisplayPoint::new(row, start as u32);
5796 if !selection_ranges
5797 .iter()
5798 .any(|region| region.start <= invisible_point && invisible_point < region.end)
5799 {
5800 return;
5801 }
5802
5803 paint(cx);
5804 }),
5805
5806 // For a whitespace to be on a boundary, any of the following conditions need to be met:
5807 // - It is a tab
5808 // - It is adjacent to an edge (start or end)
5809 // - It is adjacent to a whitespace (left or right)
5810 ShowWhitespaceSetting::Boundary => {
5811 // 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
5812 // the above cases.
5813 // Note: We zip in the original `invisibles` to check for tab equality
5814 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
5815 for (([start, end], paint), invisible) in
5816 invisible_iter.zip_eq(self.invisibles.iter())
5817 {
5818 let should_render = match (&last_seen, invisible) {
5819 (_, Invisible::Tab { .. }) => true,
5820 (Some((_, last_end, _)), _) => *last_end == start,
5821 _ => false,
5822 };
5823
5824 if should_render || start == 0 || end == self.len {
5825 paint(cx);
5826
5827 // Since we are scanning from the left, we will skip over the first available whitespace that is part
5828 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
5829 if let Some((should_render_last, last_end, paint_last)) = last_seen {
5830 // Note that we need to make sure that the last one is actually adjacent
5831 if !should_render_last && last_end == start {
5832 paint_last(cx);
5833 }
5834 }
5835 }
5836
5837 // Manually render anything within a selection
5838 let invisible_point = DisplayPoint::new(row, start as u32);
5839 if selection_ranges.iter().any(|region| {
5840 region.start <= invisible_point && invisible_point < region.end
5841 }) {
5842 paint(cx);
5843 }
5844
5845 last_seen = Some((should_render, end, paint));
5846 }
5847 }
5848 }
5849 }
5850
5851 pub fn x_for_index(&self, index: usize) -> Pixels {
5852 let mut fragment_start_x = Pixels::ZERO;
5853 let mut fragment_start_index = 0;
5854
5855 for fragment in &self.fragments {
5856 match fragment {
5857 LineFragment::Text(shaped_line) => {
5858 let fragment_end_index = fragment_start_index + shaped_line.len;
5859 if index < fragment_end_index {
5860 return fragment_start_x
5861 + shaped_line.x_for_index(index - fragment_start_index);
5862 }
5863 fragment_start_x += shaped_line.width;
5864 fragment_start_index = fragment_end_index;
5865 }
5866 LineFragment::Element { len, size, .. } => {
5867 let fragment_end_index = fragment_start_index + len;
5868 if index < fragment_end_index {
5869 return fragment_start_x;
5870 }
5871 fragment_start_x += size.width;
5872 fragment_start_index = fragment_end_index;
5873 }
5874 }
5875 }
5876
5877 fragment_start_x
5878 }
5879
5880 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
5881 let mut fragment_start_x = Pixels::ZERO;
5882 let mut fragment_start_index = 0;
5883
5884 for fragment in &self.fragments {
5885 match fragment {
5886 LineFragment::Text(shaped_line) => {
5887 let fragment_end_x = fragment_start_x + shaped_line.width;
5888 if x < fragment_end_x {
5889 return Some(
5890 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
5891 );
5892 }
5893 fragment_start_x = fragment_end_x;
5894 fragment_start_index += shaped_line.len;
5895 }
5896 LineFragment::Element { len, size, .. } => {
5897 let fragment_end_x = fragment_start_x + size.width;
5898 if x < fragment_end_x {
5899 return Some(fragment_start_index);
5900 }
5901 fragment_start_index += len;
5902 fragment_start_x = fragment_end_x;
5903 }
5904 }
5905 }
5906
5907 None
5908 }
5909
5910 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
5911 let mut fragment_start_index = 0;
5912
5913 for fragment in &self.fragments {
5914 match fragment {
5915 LineFragment::Text(shaped_line) => {
5916 let fragment_end_index = fragment_start_index + shaped_line.len;
5917 if index < fragment_end_index {
5918 return shaped_line.font_id_for_index(index - fragment_start_index);
5919 }
5920 fragment_start_index = fragment_end_index;
5921 }
5922 LineFragment::Element { len, .. } => {
5923 let fragment_end_index = fragment_start_index + len;
5924 if index < fragment_end_index {
5925 return None;
5926 }
5927 fragment_start_index = fragment_end_index;
5928 }
5929 }
5930 }
5931
5932 None
5933 }
5934}
5935
5936#[derive(Debug, Clone, Copy, PartialEq, Eq)]
5937enum Invisible {
5938 /// A tab character
5939 ///
5940 /// A tab character is internally represented by spaces (configured by the user's tab width)
5941 /// aligned to the nearest column, so it's necessary to store the start and end offset for
5942 /// adjacency checks.
5943 Tab {
5944 line_start_offset: usize,
5945 line_end_offset: usize,
5946 },
5947 Whitespace {
5948 line_offset: usize,
5949 },
5950}
5951
5952impl EditorElement {
5953 /// Returns the rem size to use when rendering the [`EditorElement`].
5954 ///
5955 /// This allows UI elements to scale based on the `buffer_font_size`.
5956 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
5957 match self.editor.read(cx).mode {
5958 EditorMode::Full => {
5959 let buffer_font_size = self.style.text.font_size;
5960 match buffer_font_size {
5961 AbsoluteLength::Pixels(pixels) => {
5962 let rem_size_scale = {
5963 // Our default UI font size is 14px on a 16px base scale.
5964 // This means the default UI font size is 0.875rems.
5965 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
5966
5967 // We then determine the delta between a single rem and the default font
5968 // size scale.
5969 let default_font_size_delta = 1. - default_font_size_scale;
5970
5971 // Finally, we add this delta to 1rem to get the scale factor that
5972 // should be used to scale up the UI.
5973 1. + default_font_size_delta
5974 };
5975
5976 Some(pixels * rem_size_scale)
5977 }
5978 AbsoluteLength::Rems(rems) => {
5979 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
5980 }
5981 }
5982 }
5983 // We currently use single-line and auto-height editors in UI contexts,
5984 // so we don't want to scale everything with the buffer font size, as it
5985 // ends up looking off.
5986 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
5987 }
5988 }
5989}
5990
5991impl Element for EditorElement {
5992 type RequestLayoutState = ();
5993 type PrepaintState = EditorLayout;
5994
5995 fn id(&self) -> Option<ElementId> {
5996 None
5997 }
5998
5999 fn request_layout(
6000 &mut self,
6001 _: Option<&GlobalElementId>,
6002 cx: &mut WindowContext,
6003 ) -> (gpui::LayoutId, ()) {
6004 let rem_size = self.rem_size(cx);
6005 cx.with_rem_size(rem_size, |cx| {
6006 self.editor.update(cx, |editor, cx| {
6007 editor.set_style(self.style.clone(), cx);
6008
6009 let layout_id = match editor.mode {
6010 EditorMode::SingleLine { auto_width } => {
6011 let rem_size = cx.rem_size();
6012
6013 let height = self.style.text.line_height_in_pixels(rem_size);
6014 if auto_width {
6015 let editor_handle = cx.view().clone();
6016 let style = self.style.clone();
6017 cx.request_measured_layout(Style::default(), move |_, _, cx| {
6018 let editor_snapshot =
6019 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
6020 let line = Self::layout_lines(
6021 DisplayRow(0)..DisplayRow(1),
6022 &editor_snapshot,
6023 &style,
6024 px(f32::MAX),
6025 |_| false, // Single lines never soft wrap
6026 cx,
6027 )
6028 .pop()
6029 .unwrap();
6030
6031 let font_id = cx.text_system().resolve_font(&style.text.font());
6032 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6033 let em_width = cx
6034 .text_system()
6035 .typographic_bounds(font_id, font_size, 'm')
6036 .unwrap()
6037 .size
6038 .width;
6039
6040 size(line.width + em_width, height)
6041 })
6042 } else {
6043 let mut style = Style::default();
6044 style.size.height = height.into();
6045 style.size.width = relative(1.).into();
6046 cx.request_layout(style, None)
6047 }
6048 }
6049 EditorMode::AutoHeight { max_lines } => {
6050 let editor_handle = cx.view().clone();
6051 let max_line_number_width =
6052 self.max_line_number_width(&editor.snapshot(cx), cx);
6053 cx.request_measured_layout(
6054 Style::default(),
6055 move |known_dimensions, available_space, cx| {
6056 editor_handle
6057 .update(cx, |editor, cx| {
6058 compute_auto_height_layout(
6059 editor,
6060 max_lines,
6061 max_line_number_width,
6062 known_dimensions,
6063 available_space.width,
6064 cx,
6065 )
6066 })
6067 .unwrap_or_default()
6068 },
6069 )
6070 }
6071 EditorMode::Full => {
6072 let mut style = Style::default();
6073 style.size.width = relative(1.).into();
6074 style.size.height = relative(1.).into();
6075 cx.request_layout(style, None)
6076 }
6077 };
6078
6079 (layout_id, ())
6080 })
6081 })
6082 }
6083
6084 fn prepaint(
6085 &mut self,
6086 _: Option<&GlobalElementId>,
6087 bounds: Bounds<Pixels>,
6088 _: &mut Self::RequestLayoutState,
6089 cx: &mut WindowContext,
6090 ) -> Self::PrepaintState {
6091 let text_style = TextStyleRefinement {
6092 font_size: Some(self.style.text.font_size),
6093 line_height: Some(self.style.text.line_height),
6094 ..Default::default()
6095 };
6096 let focus_handle = self.editor.focus_handle(cx);
6097 cx.set_view_id(self.editor.entity_id());
6098 cx.set_focus_handle(&focus_handle);
6099
6100 let rem_size = self.rem_size(cx);
6101 cx.with_rem_size(rem_size, |cx| {
6102 cx.with_text_style(Some(text_style), |cx| {
6103 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
6104 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
6105 let style = self.style.clone();
6106
6107 let font_id = cx.text_system().resolve_font(&style.text.font());
6108 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6109 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6110 let em_width = cx
6111 .text_system()
6112 .typographic_bounds(font_id, font_size, 'm')
6113 .unwrap()
6114 .size
6115 .width;
6116 let em_advance = cx
6117 .text_system()
6118 .advance(font_id, font_size, 'm')
6119 .unwrap()
6120 .width;
6121
6122 let letter_size = size(em_width, line_height);
6123
6124 let gutter_dimensions = snapshot.gutter_dimensions(
6125 font_id,
6126 font_size,
6127 em_width,
6128 em_advance,
6129 self.max_line_number_width(&snapshot, cx),
6130 cx,
6131 );
6132 let text_width = bounds.size.width - gutter_dimensions.width;
6133
6134 let editor_width = text_width - gutter_dimensions.margin - em_width;
6135
6136 snapshot = self.editor.update(cx, |editor, cx| {
6137 editor.last_bounds = Some(bounds);
6138 editor.gutter_dimensions = gutter_dimensions;
6139 editor.set_visible_line_count(bounds.size.height / line_height, cx);
6140
6141 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
6142 snapshot
6143 } else {
6144 let wrap_width = match editor.soft_wrap_mode(cx) {
6145 SoftWrap::GitDiff => None,
6146 SoftWrap::None => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
6147 SoftWrap::EditorWidth => Some(editor_width),
6148 SoftWrap::Column(column) => Some(column as f32 * em_advance),
6149 SoftWrap::Bounded(column) => {
6150 Some(editor_width.min(column as f32 * em_advance))
6151 }
6152 };
6153
6154 if editor.set_wrap_width(wrap_width, cx) {
6155 editor.snapshot(cx)
6156 } else {
6157 snapshot
6158 }
6159 }
6160 });
6161
6162 let wrap_guides = self
6163 .editor
6164 .read(cx)
6165 .wrap_guides(cx)
6166 .iter()
6167 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
6168 .collect::<SmallVec<[_; 2]>>();
6169
6170 let hitbox = cx.insert_hitbox(bounds, false);
6171 let gutter_hitbox =
6172 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
6173 let text_hitbox = cx.insert_hitbox(
6174 Bounds {
6175 origin: gutter_hitbox.top_right(),
6176 size: size(text_width, bounds.size.height),
6177 },
6178 false,
6179 );
6180 // Offset the content_bounds from the text_bounds by the gutter margin (which
6181 // is roughly half a character wide) to make hit testing work more like how we want.
6182 let content_origin =
6183 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
6184
6185 let scrollbar_bounds =
6186 Bounds::from_corners(content_origin, bounds.bottom_right());
6187
6188 let height_in_lines = scrollbar_bounds.size.height / line_height;
6189
6190 // NOTE: The max row number in the current file, minus one
6191 let max_row = snapshot.max_point().row().as_f32();
6192
6193 // NOTE: The max scroll position for the top of the window
6194 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
6195 (max_row - height_in_lines + 1.).max(0.)
6196 } else {
6197 let settings = EditorSettings::get_global(cx);
6198 match settings.scroll_beyond_last_line {
6199 ScrollBeyondLastLine::OnePage => max_row,
6200 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
6201 ScrollBeyondLastLine::VerticalScrollMargin => {
6202 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
6203 .max(0.)
6204 }
6205 }
6206 };
6207
6208 // TODO: Autoscrolling for both axes
6209 let mut autoscroll_request = None;
6210 let mut autoscroll_containing_element = false;
6211 let mut autoscroll_horizontally = false;
6212 self.editor.update(cx, |editor, cx| {
6213 autoscroll_request = editor.autoscroll_request();
6214 autoscroll_containing_element =
6215 autoscroll_request.is_some() || editor.has_pending_selection();
6216 // TODO: Is this horizontal or vertical?!
6217 autoscroll_horizontally =
6218 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
6219 snapshot = editor.snapshot(cx);
6220 });
6221
6222 let mut scroll_position = snapshot.scroll_position();
6223 // The scroll position is a fractional point, the whole number of which represents
6224 // the top of the window in terms of display rows.
6225 let start_row = DisplayRow(scroll_position.y as u32);
6226 let max_row = snapshot.max_point().row();
6227 let end_row = cmp::min(
6228 (scroll_position.y + height_in_lines).ceil() as u32,
6229 max_row.next_row().0,
6230 );
6231 let end_row = DisplayRow(end_row);
6232
6233 let buffer_rows = snapshot
6234 .buffer_rows(start_row)
6235 .take((start_row..end_row).len())
6236 .collect::<Vec<_>>();
6237 let is_row_soft_wrapped =
6238 |row| buffer_rows.get(row).copied().flatten().is_none();
6239
6240 let start_anchor = if start_row == Default::default() {
6241 Anchor::min()
6242 } else {
6243 snapshot.buffer_snapshot.anchor_before(
6244 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
6245 )
6246 };
6247 let end_anchor = if end_row > max_row {
6248 Anchor::max()
6249 } else {
6250 snapshot.buffer_snapshot.anchor_before(
6251 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
6252 )
6253 };
6254
6255 let highlighted_rows = self
6256 .editor
6257 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
6258 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
6259 start_anchor..end_anchor,
6260 &snapshot.display_snapshot,
6261 cx.theme().colors(),
6262 );
6263 let highlighted_gutter_ranges =
6264 self.editor.read(cx).gutter_highlights_in_range(
6265 start_anchor..end_anchor,
6266 &snapshot.display_snapshot,
6267 cx,
6268 );
6269
6270 let redacted_ranges = self.editor.read(cx).redacted_ranges(
6271 start_anchor..end_anchor,
6272 &snapshot.display_snapshot,
6273 cx,
6274 );
6275
6276 let (local_selections, selected_buffer_ids): (
6277 Vec<Selection<Point>>,
6278 Vec<BufferId>,
6279 ) = self.editor.update(cx, |editor, cx| {
6280 let all_selections = editor.selections.all::<Point>(cx);
6281 let selected_buffer_ids = if editor.is_singleton(cx) {
6282 Vec::new()
6283 } else {
6284 let mut selected_buffer_ids = Vec::with_capacity(all_selections.len());
6285
6286 for selection in all_selections {
6287 for buffer_id in snapshot
6288 .buffer_snapshot
6289 .buffer_ids_in_selected_rows(selection)
6290 {
6291 if selected_buffer_ids.last() != Some(&buffer_id) {
6292 selected_buffer_ids.push(buffer_id);
6293 }
6294 }
6295 }
6296
6297 selected_buffer_ids
6298 };
6299
6300 let mut selections = editor
6301 .selections
6302 .disjoint_in_range(start_anchor..end_anchor, cx);
6303 selections.extend(editor.selections.pending(cx));
6304
6305 (selections, selected_buffer_ids)
6306 });
6307
6308 let (selections, active_rows, newest_selection_head) = self.layout_selections(
6309 start_anchor,
6310 end_anchor,
6311 &local_selections,
6312 &snapshot,
6313 start_row,
6314 end_row,
6315 cx,
6316 );
6317
6318 let line_numbers = self.layout_line_numbers(
6319 Some(&gutter_hitbox),
6320 gutter_dimensions,
6321 line_height,
6322 scroll_position,
6323 start_row..end_row,
6324 buffer_rows.iter().copied(),
6325 newest_selection_head,
6326 &snapshot,
6327 cx,
6328 );
6329
6330 let mut crease_toggles = cx.with_element_namespace("crease_toggles", |cx| {
6331 self.layout_crease_toggles(
6332 start_row..end_row,
6333 buffer_rows.iter().copied(),
6334 &active_rows,
6335 &snapshot,
6336 cx,
6337 )
6338 });
6339 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
6340 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
6341 });
6342
6343 let display_hunks = self.layout_gutter_git_hunks(
6344 line_height,
6345 &gutter_hitbox,
6346 start_row..end_row,
6347 start_anchor..end_anchor,
6348 &snapshot,
6349 cx,
6350 );
6351
6352 let mut max_visible_line_width = Pixels::ZERO;
6353 let mut line_layouts = Self::layout_lines(
6354 start_row..end_row,
6355 &snapshot,
6356 &self.style,
6357 editor_width,
6358 is_row_soft_wrapped,
6359 cx,
6360 );
6361 for line_with_invisibles in &line_layouts {
6362 if line_with_invisibles.width > max_visible_line_width {
6363 max_visible_line_width = line_with_invisibles.width;
6364 }
6365 }
6366
6367 let longest_line_width = layout_line(
6368 snapshot.longest_row(),
6369 &snapshot,
6370 &style,
6371 editor_width,
6372 is_row_soft_wrapped,
6373 cx,
6374 )
6375 .width;
6376
6377 let scrollbar_range_data = ScrollbarRangeData::new(
6378 scrollbar_bounds,
6379 letter_size,
6380 &snapshot,
6381 longest_line_width,
6382 &style,
6383 cx,
6384 );
6385
6386 let scroll_range_bounds = scrollbar_range_data.scroll_range;
6387 let mut scroll_width = scroll_range_bounds.size.width;
6388
6389 let sticky_header_excerpt = if snapshot.buffer_snapshot.show_headers() {
6390 snapshot.sticky_header_excerpt(start_row)
6391 } else {
6392 None
6393 };
6394 let sticky_header_excerpt_id =
6395 sticky_header_excerpt.as_ref().map(|top| top.excerpt.id);
6396
6397 let blocks = cx.with_element_namespace("blocks", |cx| {
6398 self.render_blocks(
6399 start_row..end_row,
6400 &snapshot,
6401 &hitbox,
6402 &text_hitbox,
6403 editor_width,
6404 &mut scroll_width,
6405 &gutter_dimensions,
6406 em_width,
6407 gutter_dimensions.full_width(),
6408 line_height,
6409 &line_layouts,
6410 &local_selections,
6411 &selected_buffer_ids,
6412 is_row_soft_wrapped,
6413 sticky_header_excerpt_id,
6414 cx,
6415 )
6416 });
6417 let mut blocks = match blocks {
6418 Ok(blocks) => blocks,
6419 Err(resized_blocks) => {
6420 self.editor.update(cx, |editor, cx| {
6421 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
6422 });
6423 return self.prepaint(None, bounds, &mut (), cx);
6424 }
6425 };
6426
6427 let sticky_buffer_header = sticky_header_excerpt.map(|sticky_header_excerpt| {
6428 cx.with_element_namespace("blocks", |cx| {
6429 self.layout_sticky_buffer_header(
6430 sticky_header_excerpt,
6431 scroll_position.y,
6432 line_height,
6433 &snapshot,
6434 &hitbox,
6435 &selected_buffer_ids,
6436 cx,
6437 )
6438 })
6439 });
6440
6441 let start_buffer_row =
6442 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
6443 let end_buffer_row =
6444 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
6445
6446 let scroll_max = point(
6447 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
6448 max_row.as_f32(),
6449 );
6450
6451 self.editor.update(cx, |editor, cx| {
6452 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
6453
6454 let autoscrolled = if autoscroll_horizontally {
6455 editor.autoscroll_horizontally(
6456 start_row,
6457 text_hitbox.size.width,
6458 scroll_width,
6459 em_width,
6460 &line_layouts,
6461 cx,
6462 )
6463 } else {
6464 false
6465 };
6466
6467 if clamped || autoscrolled {
6468 snapshot = editor.snapshot(cx);
6469 scroll_position = snapshot.scroll_position();
6470 }
6471 });
6472
6473 let scroll_pixel_position = point(
6474 scroll_position.x * em_width,
6475 scroll_position.y * line_height,
6476 );
6477
6478 let indent_guides = self.layout_indent_guides(
6479 content_origin,
6480 text_hitbox.origin,
6481 start_buffer_row..end_buffer_row,
6482 scroll_pixel_position,
6483 line_height,
6484 &snapshot,
6485 cx,
6486 );
6487
6488 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
6489 self.prepaint_crease_trailers(
6490 crease_trailers,
6491 &line_layouts,
6492 line_height,
6493 content_origin,
6494 scroll_pixel_position,
6495 em_width,
6496 cx,
6497 )
6498 });
6499
6500 let mut inline_blame = None;
6501 if let Some(newest_selection_head) = newest_selection_head {
6502 let display_row = newest_selection_head.row();
6503 if (start_row..end_row).contains(&display_row) {
6504 let line_ix = display_row.minus(start_row) as usize;
6505 let line_layout = &line_layouts[line_ix];
6506 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
6507 inline_blame = self.layout_inline_blame(
6508 display_row,
6509 &snapshot.display_snapshot,
6510 line_layout,
6511 crease_trailer_layout,
6512 em_width,
6513 content_origin,
6514 scroll_pixel_position,
6515 line_height,
6516 cx,
6517 );
6518 }
6519 }
6520
6521 let blamed_display_rows = self.layout_blame_entries(
6522 buffer_rows.into_iter(),
6523 em_width,
6524 scroll_position,
6525 line_height,
6526 &gutter_hitbox,
6527 gutter_dimensions.git_blame_entries_width,
6528 cx,
6529 );
6530
6531 let scroll_max = point(
6532 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
6533 max_scroll_top,
6534 );
6535
6536 self.editor.update(cx, |editor, cx| {
6537 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
6538
6539 let autoscrolled = if autoscroll_horizontally {
6540 editor.autoscroll_horizontally(
6541 start_row,
6542 text_hitbox.size.width,
6543 scroll_width,
6544 em_width,
6545 &line_layouts,
6546 cx,
6547 )
6548 } else {
6549 false
6550 };
6551
6552 if clamped || autoscrolled {
6553 snapshot = editor.snapshot(cx);
6554 scroll_position = snapshot.scroll_position();
6555 }
6556 });
6557
6558 let line_elements = self.prepaint_lines(
6559 start_row,
6560 &mut line_layouts,
6561 line_height,
6562 scroll_pixel_position,
6563 content_origin,
6564 cx,
6565 );
6566
6567 let mut block_start_rows = HashSet::default();
6568
6569 cx.with_element_namespace("blocks", |cx| {
6570 self.layout_blocks(
6571 &mut blocks,
6572 &mut block_start_rows,
6573 &hitbox,
6574 line_height,
6575 scroll_pixel_position,
6576 cx,
6577 );
6578 });
6579
6580 let cursors = self.collect_cursors(&snapshot, cx);
6581 let visible_row_range = start_row..end_row;
6582 let non_visible_cursors = cursors
6583 .iter()
6584 .any(move |c| !visible_row_range.contains(&c.0.row()));
6585
6586 let visible_cursors = self.layout_visible_cursors(
6587 &snapshot,
6588 &selections,
6589 &block_start_rows,
6590 start_row..end_row,
6591 &line_layouts,
6592 &text_hitbox,
6593 content_origin,
6594 scroll_position,
6595 scroll_pixel_position,
6596 line_height,
6597 em_width,
6598 em_advance,
6599 autoscroll_containing_element,
6600 cx,
6601 );
6602
6603 let scrollbars_layout = self.layout_scrollbars(
6604 &snapshot,
6605 scrollbar_range_data,
6606 scroll_position,
6607 non_visible_cursors,
6608 cx,
6609 );
6610
6611 let gutter_settings = EditorSettings::get_global(cx).gutter;
6612
6613 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
6614 editor
6615 .diff_map
6616 .hunks(false)
6617 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
6618 .map(|expanded_hunk| {
6619 let start_row = expanded_hunk
6620 .hunk_range
6621 .start
6622 .to_display_point(&snapshot)
6623 .row();
6624 (start_row, expanded_hunk.clone())
6625 })
6626 .collect::<HashMap<_, _>>()
6627 });
6628
6629 let rows_with_hunk_bounds = display_hunks
6630 .iter()
6631 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
6632 .fold(
6633 HashMap::default(),
6634 |mut rows_with_hunk_bounds, (hunk, bounds)| {
6635 match hunk {
6636 DisplayDiffHunk::Folded { display_row } => {
6637 rows_with_hunk_bounds.insert(*display_row, bounds);
6638 }
6639 DisplayDiffHunk::Unfolded {
6640 display_row_range, ..
6641 } => {
6642 for display_row in display_row_range.iter_rows() {
6643 rows_with_hunk_bounds.insert(display_row, bounds);
6644 }
6645 }
6646 }
6647 rows_with_hunk_bounds
6648 },
6649 );
6650 let mut code_actions_indicator = None;
6651 if let Some(newest_selection_head) = newest_selection_head {
6652 if (start_row..end_row).contains(&newest_selection_head.row()) {
6653 self.layout_context_menu(
6654 line_height,
6655 &text_hitbox,
6656 content_origin,
6657 start_row,
6658 scroll_pixel_position,
6659 &line_layouts,
6660 newest_selection_head,
6661 gutter_dimensions.width - gutter_dimensions.left_padding,
6662 cx,
6663 );
6664
6665 let show_code_actions = snapshot
6666 .show_code_actions
6667 .unwrap_or(gutter_settings.code_actions);
6668 if show_code_actions {
6669 let newest_selection_point =
6670 newest_selection_head.to_point(&snapshot.display_snapshot);
6671 let newest_selection_display_row =
6672 newest_selection_point.to_display_point(&snapshot).row();
6673 if !expanded_add_hunks_by_rows
6674 .contains_key(&newest_selection_display_row)
6675 {
6676 if !snapshot
6677 .is_line_folded(MultiBufferRow(newest_selection_point.row))
6678 {
6679 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
6680 MultiBufferRow(newest_selection_point.row),
6681 );
6682 if let Some((buffer, range)) = buffer {
6683 let buffer_id = buffer.remote_id();
6684 let row = range.start.row;
6685 let has_test_indicator = self
6686 .editor
6687 .read(cx)
6688 .tasks
6689 .contains_key(&(buffer_id, row));
6690
6691 if !has_test_indicator {
6692 code_actions_indicator = self
6693 .layout_code_actions_indicator(
6694 line_height,
6695 newest_selection_head,
6696 scroll_pixel_position,
6697 &gutter_dimensions,
6698 &gutter_hitbox,
6699 &rows_with_hunk_bounds,
6700 cx,
6701 );
6702 }
6703 }
6704 }
6705 }
6706 }
6707 }
6708 }
6709
6710 let test_indicators = if gutter_settings.runnables {
6711 self.layout_run_indicators(
6712 line_height,
6713 start_row..end_row,
6714 scroll_pixel_position,
6715 &gutter_dimensions,
6716 &gutter_hitbox,
6717 &rows_with_hunk_bounds,
6718 &snapshot,
6719 cx,
6720 )
6721 } else {
6722 Vec::new()
6723 };
6724
6725 self.layout_signature_help(
6726 &hitbox,
6727 content_origin,
6728 scroll_pixel_position,
6729 newest_selection_head,
6730 start_row,
6731 &line_layouts,
6732 line_height,
6733 em_width,
6734 cx,
6735 );
6736
6737 if !cx.has_active_drag() {
6738 self.layout_hover_popovers(
6739 &snapshot,
6740 &hitbox,
6741 &text_hitbox,
6742 start_row..end_row,
6743 content_origin,
6744 scroll_pixel_position,
6745 &line_layouts,
6746 line_height,
6747 em_width,
6748 cx,
6749 );
6750 }
6751
6752 let inline_completion_popover = self.layout_inline_completion_popover(
6753 &text_hitbox.bounds,
6754 &snapshot,
6755 start_row..end_row,
6756 scroll_position.y,
6757 scroll_position.y + height_in_lines,
6758 &line_layouts,
6759 line_height,
6760 scroll_pixel_position,
6761 editor_width,
6762 &style,
6763 cx,
6764 );
6765
6766 let mouse_context_menu = self.layout_mouse_context_menu(
6767 &snapshot,
6768 start_row..end_row,
6769 content_origin,
6770 cx,
6771 );
6772
6773 cx.with_element_namespace("crease_toggles", |cx| {
6774 self.prepaint_crease_toggles(
6775 &mut crease_toggles,
6776 line_height,
6777 &gutter_dimensions,
6778 gutter_settings,
6779 scroll_pixel_position,
6780 &gutter_hitbox,
6781 cx,
6782 )
6783 });
6784
6785 let invisible_symbol_font_size = font_size / 2.;
6786 let tab_invisible = cx
6787 .text_system()
6788 .shape_line(
6789 "→".into(),
6790 invisible_symbol_font_size,
6791 &[TextRun {
6792 len: "→".len(),
6793 font: self.style.text.font(),
6794 color: cx.theme().colors().editor_invisible,
6795 background_color: None,
6796 underline: None,
6797 strikethrough: None,
6798 }],
6799 )
6800 .unwrap();
6801 let space_invisible = cx
6802 .text_system()
6803 .shape_line(
6804 "•".into(),
6805 invisible_symbol_font_size,
6806 &[TextRun {
6807 len: "•".len(),
6808 font: self.style.text.font(),
6809 color: cx.theme().colors().editor_invisible,
6810 background_color: None,
6811 underline: None,
6812 strikethrough: None,
6813 }],
6814 )
6815 .unwrap();
6816
6817 EditorLayout {
6818 mode: snapshot.mode,
6819 position_map: Rc::new(PositionMap {
6820 size: bounds.size,
6821 scroll_pixel_position,
6822 scroll_max,
6823 line_layouts,
6824 line_height,
6825 em_width,
6826 em_advance,
6827 snapshot,
6828 }),
6829 visible_display_row_range: start_row..end_row,
6830 wrap_guides,
6831 indent_guides,
6832 hitbox,
6833 text_hitbox,
6834 gutter_hitbox,
6835 display_hunks,
6836 content_origin,
6837 scrollbars_layout,
6838 active_rows,
6839 highlighted_rows,
6840 highlighted_ranges,
6841 highlighted_gutter_ranges,
6842 redacted_ranges,
6843 line_elements,
6844 line_numbers,
6845 blamed_display_rows,
6846 inline_blame,
6847 blocks,
6848 cursors,
6849 visible_cursors,
6850 selections,
6851 inline_completion_popover,
6852 mouse_context_menu,
6853 test_indicators,
6854 code_actions_indicator,
6855 crease_toggles,
6856 crease_trailers,
6857 tab_invisible,
6858 space_invisible,
6859 sticky_buffer_header,
6860 }
6861 })
6862 })
6863 })
6864 }
6865
6866 fn paint(
6867 &mut self,
6868 _: Option<&GlobalElementId>,
6869 bounds: Bounds<gpui::Pixels>,
6870 _: &mut Self::RequestLayoutState,
6871 layout: &mut Self::PrepaintState,
6872 cx: &mut WindowContext,
6873 ) {
6874 let focus_handle = self.editor.focus_handle(cx);
6875 let key_context = self.editor.update(cx, |editor, cx| editor.key_context(cx));
6876
6877 cx.set_key_context(key_context);
6878 cx.handle_input(
6879 &focus_handle,
6880 ElementInputHandler::new(bounds, self.editor.clone()),
6881 );
6882 self.register_actions(cx);
6883 self.register_key_listeners(cx, layout);
6884
6885 let text_style = TextStyleRefinement {
6886 font_size: Some(self.style.text.font_size),
6887 line_height: Some(self.style.text.line_height),
6888 ..Default::default()
6889 };
6890 let hovered_hunk = layout
6891 .display_hunks
6892 .iter()
6893 .find_map(|(hunk, hunk_hitbox)| match hunk {
6894 DisplayDiffHunk::Folded { .. } => None,
6895 DisplayDiffHunk::Unfolded {
6896 diff_base_byte_range,
6897 multi_buffer_range,
6898 status,
6899 ..
6900 } => {
6901 if hunk_hitbox
6902 .as_ref()
6903 .map(|hitbox| hitbox.is_hovered(cx))
6904 .unwrap_or(false)
6905 {
6906 Some(HoveredHunk {
6907 status: *status,
6908 multi_buffer_range: multi_buffer_range.clone(),
6909 diff_base_byte_range: diff_base_byte_range.clone(),
6910 })
6911 } else {
6912 None
6913 }
6914 }
6915 });
6916 let rem_size = self.rem_size(cx);
6917 cx.with_rem_size(rem_size, |cx| {
6918 cx.with_text_style(Some(text_style), |cx| {
6919 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
6920 self.paint_mouse_listeners(layout, hovered_hunk, cx);
6921 self.paint_background(layout, cx);
6922 self.paint_indent_guides(layout, cx);
6923
6924 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6925 self.paint_blamed_display_rows(layout, cx);
6926 self.paint_line_numbers(layout, cx);
6927 }
6928
6929 self.paint_text(layout, cx);
6930
6931 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6932 self.paint_gutter_highlights(layout, cx);
6933 self.paint_gutter_indicators(layout, cx);
6934 }
6935
6936 if !layout.blocks.is_empty() {
6937 cx.with_element_namespace("blocks", |cx| {
6938 self.paint_blocks(layout, cx);
6939 });
6940 }
6941
6942 cx.with_element_namespace("blocks", |cx| {
6943 if let Some(mut sticky_header) = layout.sticky_buffer_header.take() {
6944 sticky_header.paint(cx)
6945 }
6946 });
6947
6948 self.paint_scrollbars(layout, cx);
6949 self.paint_inline_completion_popover(layout, cx);
6950 self.paint_mouse_context_menu(layout, cx);
6951 });
6952 })
6953 })
6954 }
6955}
6956
6957pub(super) fn gutter_bounds(
6958 editor_bounds: Bounds<Pixels>,
6959 gutter_dimensions: GutterDimensions,
6960) -> Bounds<Pixels> {
6961 Bounds {
6962 origin: editor_bounds.origin,
6963 size: size(gutter_dimensions.width, editor_bounds.size.height),
6964 }
6965}
6966
6967struct ScrollbarRangeData {
6968 scrollbar_bounds: Bounds<Pixels>,
6969 scroll_range: Bounds<Pixels>,
6970 letter_size: Size<Pixels>,
6971}
6972
6973impl ScrollbarRangeData {
6974 pub fn new(
6975 scrollbar_bounds: Bounds<Pixels>,
6976 letter_size: Size<Pixels>,
6977 snapshot: &EditorSnapshot,
6978 longest_line_width: Pixels,
6979 style: &EditorStyle,
6980 cx: &WindowContext,
6981 ) -> ScrollbarRangeData {
6982 // TODO: Simplify this function down, it requires a lot of parameters
6983 let max_row = snapshot.max_point().row();
6984 let text_bounds_size = size(longest_line_width, max_row.0 as f32 * letter_size.height);
6985
6986 let scrollbar_width = style.scrollbar_width;
6987
6988 let settings = EditorSettings::get_global(cx);
6989 let scroll_beyond_last_line: Pixels = match settings.scroll_beyond_last_line {
6990 ScrollBeyondLastLine::OnePage => px(scrollbar_bounds.size.height / letter_size.height),
6991 ScrollBeyondLastLine::Off => px(1.),
6992 ScrollBeyondLastLine::VerticalScrollMargin => px(1.0 + settings.vertical_scroll_margin),
6993 };
6994
6995 let overscroll = size(
6996 scrollbar_width + (letter_size.width / 2.0),
6997 letter_size.height * scroll_beyond_last_line,
6998 );
6999
7000 let scroll_range = Bounds {
7001 origin: scrollbar_bounds.origin,
7002 size: text_bounds_size + overscroll,
7003 };
7004
7005 ScrollbarRangeData {
7006 scrollbar_bounds,
7007 scroll_range,
7008 letter_size,
7009 }
7010 }
7011}
7012
7013impl IntoElement for EditorElement {
7014 type Element = Self;
7015
7016 fn into_element(self) -> Self::Element {
7017 self
7018 }
7019}
7020
7021pub struct EditorLayout {
7022 position_map: Rc<PositionMap>,
7023 hitbox: Hitbox,
7024 text_hitbox: Hitbox,
7025 gutter_hitbox: Hitbox,
7026 content_origin: gpui::Point<Pixels>,
7027 scrollbars_layout: AxisPair<Option<ScrollbarLayout>>,
7028 mode: EditorMode,
7029 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
7030 indent_guides: Option<Vec<IndentGuideLayout>>,
7031 visible_display_row_range: Range<DisplayRow>,
7032 active_rows: BTreeMap<DisplayRow, bool>,
7033 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
7034 line_elements: SmallVec<[AnyElement; 1]>,
7035 line_numbers: Arc<HashMap<MultiBufferRow, LineNumberLayout>>,
7036 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
7037 blamed_display_rows: Option<Vec<AnyElement>>,
7038 inline_blame: Option<AnyElement>,
7039 blocks: Vec<BlockLayout>,
7040 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
7041 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
7042 redacted_ranges: Vec<Range<DisplayPoint>>,
7043 cursors: Vec<(DisplayPoint, Hsla)>,
7044 visible_cursors: Vec<CursorLayout>,
7045 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
7046 code_actions_indicator: Option<AnyElement>,
7047 test_indicators: Vec<AnyElement>,
7048 crease_toggles: Vec<Option<AnyElement>>,
7049 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
7050 inline_completion_popover: Option<AnyElement>,
7051 mouse_context_menu: Option<AnyElement>,
7052 tab_invisible: ShapedLine,
7053 space_invisible: ShapedLine,
7054 sticky_buffer_header: Option<AnyElement>,
7055}
7056
7057impl EditorLayout {
7058 fn line_end_overshoot(&self) -> Pixels {
7059 0.15 * self.position_map.line_height
7060 }
7061}
7062
7063struct LineNumberLayout {
7064 shaped_line: ShapedLine,
7065 hitbox: Option<Hitbox>,
7066 display_row: DisplayRow,
7067}
7068
7069struct ColoredRange<T> {
7070 start: T,
7071 end: T,
7072 color: Hsla,
7073}
7074
7075#[derive(Clone)]
7076struct ScrollbarLayout {
7077 hitbox: Hitbox,
7078 visible_range: Range<f32>,
7079 visible: bool,
7080 text_unit_size: Pixels,
7081 thumb_size: Pixels,
7082 axis: Axis,
7083}
7084
7085impl ScrollbarLayout {
7086 const BORDER_WIDTH: Pixels = px(1.0);
7087 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
7088 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
7089 // const MIN_THUMB_HEIGHT: Pixels = px(20.0);
7090
7091 fn thumb_bounds(&self) -> Bounds<Pixels> {
7092 match self.axis {
7093 Axis::Vertical => {
7094 let thumb_top = self.y_for_row(self.visible_range.start);
7095 let thumb_bottom = thumb_top + self.thumb_size;
7096 Bounds::from_corners(
7097 point(self.hitbox.left(), thumb_top),
7098 point(self.hitbox.right(), thumb_bottom),
7099 )
7100 }
7101 Axis::Horizontal => {
7102 let thumb_left =
7103 self.hitbox.left() + self.visible_range.start * self.text_unit_size;
7104 let thumb_right = thumb_left + self.thumb_size;
7105 Bounds::from_corners(
7106 point(thumb_left, self.hitbox.top()),
7107 point(thumb_right, self.hitbox.bottom()),
7108 )
7109 }
7110 }
7111 }
7112
7113 fn y_for_row(&self, row: f32) -> Pixels {
7114 self.hitbox.top() + row * self.text_unit_size
7115 }
7116
7117 fn marker_quads_for_ranges(
7118 &self,
7119 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
7120 column: Option<usize>,
7121 ) -> Vec<PaintQuad> {
7122 struct MinMax {
7123 min: Pixels,
7124 max: Pixels,
7125 }
7126 let (x_range, height_limit) = if let Some(column) = column {
7127 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
7128 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
7129 let end = start + column_width;
7130 (
7131 Range { start, end },
7132 MinMax {
7133 min: Self::MIN_MARKER_HEIGHT,
7134 max: px(f32::MAX),
7135 },
7136 )
7137 } else {
7138 (
7139 Range {
7140 start: Self::BORDER_WIDTH,
7141 end: self.hitbox.size.width,
7142 },
7143 MinMax {
7144 min: Self::LINE_MARKER_HEIGHT,
7145 max: Self::LINE_MARKER_HEIGHT,
7146 },
7147 )
7148 };
7149
7150 let row_to_y = |row: DisplayRow| row.as_f32() * self.text_unit_size;
7151 let mut pixel_ranges = row_ranges
7152 .into_iter()
7153 .map(|range| {
7154 let start_y = row_to_y(range.start);
7155 let end_y = row_to_y(range.end)
7156 + self
7157 .text_unit_size
7158 .max(height_limit.min)
7159 .min(height_limit.max);
7160 ColoredRange {
7161 start: start_y,
7162 end: end_y,
7163 color: range.color,
7164 }
7165 })
7166 .peekable();
7167
7168 let mut quads = Vec::new();
7169 while let Some(mut pixel_range) = pixel_ranges.next() {
7170 while let Some(next_pixel_range) = pixel_ranges.peek() {
7171 if pixel_range.end >= next_pixel_range.start - px(1.0)
7172 && pixel_range.color == next_pixel_range.color
7173 {
7174 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
7175 pixel_ranges.next();
7176 } else {
7177 break;
7178 }
7179 }
7180
7181 let bounds = Bounds::from_corners(
7182 point(x_range.start, pixel_range.start),
7183 point(x_range.end, pixel_range.end),
7184 );
7185 quads.push(quad(
7186 bounds,
7187 Corners::default(),
7188 pixel_range.color,
7189 Edges::default(),
7190 Hsla::transparent_black(),
7191 ));
7192 }
7193
7194 quads
7195 }
7196}
7197
7198struct CreaseTrailerLayout {
7199 element: AnyElement,
7200 bounds: Bounds<Pixels>,
7201}
7202
7203struct PositionMap {
7204 size: Size<Pixels>,
7205 line_height: Pixels,
7206 scroll_pixel_position: gpui::Point<Pixels>,
7207 scroll_max: gpui::Point<f32>,
7208 em_width: Pixels,
7209 em_advance: Pixels,
7210 line_layouts: Vec<LineWithInvisibles>,
7211 snapshot: EditorSnapshot,
7212}
7213
7214#[derive(Debug, Copy, Clone)]
7215pub struct PointForPosition {
7216 pub previous_valid: DisplayPoint,
7217 pub next_valid: DisplayPoint,
7218 pub exact_unclipped: DisplayPoint,
7219 pub column_overshoot_after_line_end: u32,
7220}
7221
7222impl PointForPosition {
7223 pub fn as_valid(&self) -> Option<DisplayPoint> {
7224 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
7225 Some(self.previous_valid)
7226 } else {
7227 None
7228 }
7229 }
7230}
7231
7232impl PositionMap {
7233 fn point_for_position(
7234 &self,
7235 text_bounds: Bounds<Pixels>,
7236 position: gpui::Point<Pixels>,
7237 ) -> PointForPosition {
7238 let scroll_position = self.snapshot.scroll_position();
7239 let position = position - text_bounds.origin;
7240 let y = position.y.max(px(0.)).min(self.size.height);
7241 let x = position.x + (scroll_position.x * self.em_width);
7242 let row = ((y / self.line_height) + scroll_position.y) as u32;
7243
7244 let (column, x_overshoot_after_line_end) = if let Some(line) = self
7245 .line_layouts
7246 .get(row as usize - scroll_position.y as usize)
7247 {
7248 if let Some(ix) = line.index_for_x(x) {
7249 (ix as u32, px(0.))
7250 } else {
7251 (line.len as u32, px(0.).max(x - line.width))
7252 }
7253 } else {
7254 (0, x)
7255 };
7256
7257 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
7258 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
7259 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
7260
7261 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
7262 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
7263 PointForPosition {
7264 previous_valid,
7265 next_valid,
7266 exact_unclipped,
7267 column_overshoot_after_line_end,
7268 }
7269 }
7270}
7271
7272struct BlockLayout {
7273 id: BlockId,
7274 row: Option<DisplayRow>,
7275 element: AnyElement,
7276 available_space: Size<AvailableSpace>,
7277 style: BlockStyle,
7278}
7279
7280fn layout_line(
7281 row: DisplayRow,
7282 snapshot: &EditorSnapshot,
7283 style: &EditorStyle,
7284 text_width: Pixels,
7285 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
7286 cx: &mut WindowContext,
7287) -> LineWithInvisibles {
7288 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
7289 LineWithInvisibles::from_chunks(
7290 chunks,
7291 &style,
7292 MAX_LINE_LEN,
7293 1,
7294 snapshot.mode,
7295 text_width,
7296 is_row_soft_wrapped,
7297 cx,
7298 )
7299 .pop()
7300 .unwrap()
7301}
7302
7303#[derive(Debug)]
7304pub struct IndentGuideLayout {
7305 origin: gpui::Point<Pixels>,
7306 length: Pixels,
7307 single_indent_width: Pixels,
7308 depth: u32,
7309 active: bool,
7310 settings: IndentGuideSettings,
7311}
7312
7313pub struct CursorLayout {
7314 origin: gpui::Point<Pixels>,
7315 block_width: Pixels,
7316 line_height: Pixels,
7317 color: Hsla,
7318 shape: CursorShape,
7319 block_text: Option<ShapedLine>,
7320 cursor_name: Option<AnyElement>,
7321}
7322
7323#[derive(Debug)]
7324pub struct CursorName {
7325 string: SharedString,
7326 color: Hsla,
7327 is_top_row: bool,
7328}
7329
7330impl CursorLayout {
7331 pub fn new(
7332 origin: gpui::Point<Pixels>,
7333 block_width: Pixels,
7334 line_height: Pixels,
7335 color: Hsla,
7336 shape: CursorShape,
7337 block_text: Option<ShapedLine>,
7338 ) -> CursorLayout {
7339 CursorLayout {
7340 origin,
7341 block_width,
7342 line_height,
7343 color,
7344 shape,
7345 block_text,
7346 cursor_name: None,
7347 }
7348 }
7349
7350 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
7351 Bounds {
7352 origin: self.origin + origin,
7353 size: size(self.block_width, self.line_height),
7354 }
7355 }
7356
7357 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
7358 match self.shape {
7359 CursorShape::Bar => Bounds {
7360 origin: self.origin + origin,
7361 size: size(px(2.0), self.line_height),
7362 },
7363 CursorShape::Block | CursorShape::Hollow => Bounds {
7364 origin: self.origin + origin,
7365 size: size(self.block_width, self.line_height),
7366 },
7367 CursorShape::Underline => Bounds {
7368 origin: self.origin
7369 + origin
7370 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
7371 size: size(self.block_width, px(2.0)),
7372 },
7373 }
7374 }
7375
7376 pub fn layout(
7377 &mut self,
7378 origin: gpui::Point<Pixels>,
7379 cursor_name: Option<CursorName>,
7380 cx: &mut WindowContext,
7381 ) {
7382 if let Some(cursor_name) = cursor_name {
7383 let bounds = self.bounds(origin);
7384 let text_size = self.line_height / 1.5;
7385
7386 let name_origin = if cursor_name.is_top_row {
7387 point(bounds.right() - px(1.), bounds.top())
7388 } else {
7389 match self.shape {
7390 CursorShape::Bar => point(
7391 bounds.right() - px(2.),
7392 bounds.top() - text_size / 2. - px(1.),
7393 ),
7394 _ => point(
7395 bounds.right() - px(1.),
7396 bounds.top() - text_size / 2. - px(1.),
7397 ),
7398 }
7399 };
7400 let mut name_element = div()
7401 .bg(self.color)
7402 .text_size(text_size)
7403 .px_0p5()
7404 .line_height(text_size + px(2.))
7405 .text_color(cursor_name.color)
7406 .child(cursor_name.string.clone())
7407 .into_any_element();
7408
7409 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
7410
7411 self.cursor_name = Some(name_element);
7412 }
7413 }
7414
7415 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
7416 let bounds = self.bounds(origin);
7417
7418 //Draw background or border quad
7419 let cursor = if matches!(self.shape, CursorShape::Hollow) {
7420 outline(bounds, self.color)
7421 } else {
7422 fill(bounds, self.color)
7423 };
7424
7425 if let Some(name) = &mut self.cursor_name {
7426 name.paint(cx);
7427 }
7428
7429 cx.paint_quad(cursor);
7430
7431 if let Some(block_text) = &self.block_text {
7432 block_text
7433 .paint(self.origin + origin, self.line_height, cx)
7434 .log_err();
7435 }
7436 }
7437
7438 pub fn shape(&self) -> CursorShape {
7439 self.shape
7440 }
7441}
7442
7443#[derive(Debug)]
7444pub struct HighlightedRange {
7445 pub start_y: Pixels,
7446 pub line_height: Pixels,
7447 pub lines: Vec<HighlightedRangeLine>,
7448 pub color: Hsla,
7449 pub corner_radius: Pixels,
7450}
7451
7452#[derive(Debug)]
7453pub struct HighlightedRangeLine {
7454 pub start_x: Pixels,
7455 pub end_x: Pixels,
7456}
7457
7458impl HighlightedRange {
7459 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
7460 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
7461 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
7462 self.paint_lines(
7463 self.start_y + self.line_height,
7464 &self.lines[1..],
7465 bounds,
7466 cx,
7467 );
7468 } else {
7469 self.paint_lines(self.start_y, &self.lines, bounds, cx);
7470 }
7471 }
7472
7473 fn paint_lines(
7474 &self,
7475 start_y: Pixels,
7476 lines: &[HighlightedRangeLine],
7477 _bounds: Bounds<Pixels>,
7478 cx: &mut WindowContext,
7479 ) {
7480 if lines.is_empty() {
7481 return;
7482 }
7483
7484 let first_line = lines.first().unwrap();
7485 let last_line = lines.last().unwrap();
7486
7487 let first_top_left = point(first_line.start_x, start_y);
7488 let first_top_right = point(first_line.end_x, start_y);
7489
7490 let curve_height = point(Pixels::ZERO, self.corner_radius);
7491 let curve_width = |start_x: Pixels, end_x: Pixels| {
7492 let max = (end_x - start_x) / 2.;
7493 let width = if max < self.corner_radius {
7494 max
7495 } else {
7496 self.corner_radius
7497 };
7498
7499 point(width, Pixels::ZERO)
7500 };
7501
7502 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
7503 let mut path = gpui::Path::new(first_top_right - top_curve_width);
7504 path.curve_to(first_top_right + curve_height, first_top_right);
7505
7506 let mut iter = lines.iter().enumerate().peekable();
7507 while let Some((ix, line)) = iter.next() {
7508 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
7509
7510 if let Some((_, next_line)) = iter.peek() {
7511 let next_top_right = point(next_line.end_x, bottom_right.y);
7512
7513 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
7514 Ordering::Equal => {
7515 path.line_to(bottom_right);
7516 }
7517 Ordering::Less => {
7518 let curve_width = curve_width(next_top_right.x, bottom_right.x);
7519 path.line_to(bottom_right - curve_height);
7520 if self.corner_radius > Pixels::ZERO {
7521 path.curve_to(bottom_right - curve_width, bottom_right);
7522 }
7523 path.line_to(next_top_right + curve_width);
7524 if self.corner_radius > Pixels::ZERO {
7525 path.curve_to(next_top_right + curve_height, next_top_right);
7526 }
7527 }
7528 Ordering::Greater => {
7529 let curve_width = curve_width(bottom_right.x, next_top_right.x);
7530 path.line_to(bottom_right - curve_height);
7531 if self.corner_radius > Pixels::ZERO {
7532 path.curve_to(bottom_right + curve_width, bottom_right);
7533 }
7534 path.line_to(next_top_right - curve_width);
7535 if self.corner_radius > Pixels::ZERO {
7536 path.curve_to(next_top_right + curve_height, next_top_right);
7537 }
7538 }
7539 }
7540 } else {
7541 let curve_width = curve_width(line.start_x, line.end_x);
7542 path.line_to(bottom_right - curve_height);
7543 if self.corner_radius > Pixels::ZERO {
7544 path.curve_to(bottom_right - curve_width, bottom_right);
7545 }
7546
7547 let bottom_left = point(line.start_x, bottom_right.y);
7548 path.line_to(bottom_left + curve_width);
7549 if self.corner_radius > Pixels::ZERO {
7550 path.curve_to(bottom_left - curve_height, bottom_left);
7551 }
7552 }
7553 }
7554
7555 if first_line.start_x > last_line.start_x {
7556 let curve_width = curve_width(last_line.start_x, first_line.start_x);
7557 let second_top_left = point(last_line.start_x, start_y + self.line_height);
7558 path.line_to(second_top_left + curve_height);
7559 if self.corner_radius > Pixels::ZERO {
7560 path.curve_to(second_top_left + curve_width, second_top_left);
7561 }
7562 let first_bottom_left = point(first_line.start_x, second_top_left.y);
7563 path.line_to(first_bottom_left - curve_width);
7564 if self.corner_radius > Pixels::ZERO {
7565 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
7566 }
7567 }
7568
7569 path.line_to(first_top_left + curve_height);
7570 if self.corner_radius > Pixels::ZERO {
7571 path.curve_to(first_top_left + top_curve_width, first_top_left);
7572 }
7573 path.line_to(first_top_right - top_curve_width);
7574
7575 cx.paint_path(path, self.color);
7576 }
7577}
7578
7579pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7580 (delta.pow(1.5) / 100.0).into()
7581}
7582
7583fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7584 (delta.pow(1.2) / 300.0).into()
7585}
7586
7587pub fn register_action<T: Action>(
7588 view: &View<Editor>,
7589 cx: &mut WindowContext,
7590 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
7591) {
7592 let view = view.clone();
7593 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
7594 let action = action.downcast_ref().unwrap();
7595 if phase == DispatchPhase::Bubble {
7596 view.update(cx, |editor, cx| {
7597 listener(editor, action, cx);
7598 })
7599 }
7600 })
7601}
7602
7603fn compute_auto_height_layout(
7604 editor: &mut Editor,
7605 max_lines: usize,
7606 max_line_number_width: Pixels,
7607 known_dimensions: Size<Option<Pixels>>,
7608 available_width: AvailableSpace,
7609 cx: &mut ViewContext<Editor>,
7610) -> Option<Size<Pixels>> {
7611 let width = known_dimensions.width.or({
7612 if let AvailableSpace::Definite(available_width) = available_width {
7613 Some(available_width)
7614 } else {
7615 None
7616 }
7617 })?;
7618 if let Some(height) = known_dimensions.height {
7619 return Some(size(width, height));
7620 }
7621
7622 let style = editor.style.as_ref().unwrap();
7623 let font_id = cx.text_system().resolve_font(&style.text.font());
7624 let font_size = style.text.font_size.to_pixels(cx.rem_size());
7625 let line_height = style.text.line_height_in_pixels(cx.rem_size());
7626 let em_width = cx
7627 .text_system()
7628 .typographic_bounds(font_id, font_size, 'm')
7629 .unwrap()
7630 .size
7631 .width;
7632 let em_advance = cx
7633 .text_system()
7634 .advance(font_id, font_size, 'm')
7635 .unwrap()
7636 .width;
7637
7638 let mut snapshot = editor.snapshot(cx);
7639 let gutter_dimensions = snapshot.gutter_dimensions(
7640 font_id,
7641 font_size,
7642 em_width,
7643 em_advance,
7644 max_line_number_width,
7645 cx,
7646 );
7647
7648 editor.gutter_dimensions = gutter_dimensions;
7649 let text_width = width - gutter_dimensions.width;
7650 let overscroll = size(em_width, px(0.));
7651
7652 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
7653 if editor.set_wrap_width(Some(editor_width), cx) {
7654 snapshot = editor.snapshot(cx);
7655 }
7656
7657 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
7658 let height = scroll_height
7659 .max(line_height)
7660 .min(line_height * max_lines as f32);
7661
7662 Some(size(width, height))
7663}
7664
7665#[cfg(test)]
7666mod tests {
7667 use super::*;
7668 use crate::{
7669 display_map::{BlockPlacement, BlockProperties},
7670 editor_tests::{init_test, update_test_language_settings},
7671 Editor, MultiBuffer,
7672 };
7673 use gpui::{TestAppContext, VisualTestContext};
7674 use language::language_settings;
7675 use log::info;
7676 use similar::DiffableStr;
7677 use std::num::NonZeroU32;
7678 use util::test::sample_text;
7679
7680 #[gpui::test]
7681 fn test_shape_line_numbers(cx: &mut TestAppContext) {
7682 init_test(cx, |_| {});
7683 let window = cx.add_window(|cx| {
7684 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
7685 Editor::new(EditorMode::Full, buffer, None, true, cx)
7686 });
7687
7688 let editor = window.root(cx).unwrap();
7689 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7690 let line_height = window
7691 .update(cx, |_, cx| style.text.line_height_in_pixels(cx.rem_size()))
7692 .unwrap();
7693 let element = EditorElement::new(&editor, style);
7694 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
7695
7696 let layouts = cx
7697 .update_window(*window, |_, cx| {
7698 element.layout_line_numbers(
7699 None,
7700 GutterDimensions {
7701 left_padding: Pixels::ZERO,
7702 right_padding: Pixels::ZERO,
7703 width: px(30.0),
7704 margin: Pixels::ZERO,
7705 git_blame_entries_width: None,
7706 },
7707 line_height,
7708 gpui::Point::default(),
7709 DisplayRow(0)..DisplayRow(6),
7710 (0..6).map(MultiBufferRow).map(Some),
7711 Some(DisplayPoint::new(DisplayRow(0), 0)),
7712 &snapshot,
7713 cx,
7714 )
7715 })
7716 .unwrap();
7717 assert_eq!(layouts.len(), 6);
7718
7719 let relative_rows = window
7720 .update(cx, |editor, cx| {
7721 let snapshot = editor.snapshot(cx);
7722 element.calculate_relative_line_numbers(
7723 &snapshot,
7724 &(DisplayRow(0)..DisplayRow(6)),
7725 Some(DisplayRow(3)),
7726 )
7727 })
7728 .unwrap();
7729 assert_eq!(relative_rows[&DisplayRow(0)], 3);
7730 assert_eq!(relative_rows[&DisplayRow(1)], 2);
7731 assert_eq!(relative_rows[&DisplayRow(2)], 1);
7732 // current line has no relative number
7733 assert_eq!(relative_rows[&DisplayRow(4)], 1);
7734 assert_eq!(relative_rows[&DisplayRow(5)], 2);
7735
7736 // works if cursor is before screen
7737 let relative_rows = window
7738 .update(cx, |editor, cx| {
7739 let snapshot = editor.snapshot(cx);
7740 element.calculate_relative_line_numbers(
7741 &snapshot,
7742 &(DisplayRow(3)..DisplayRow(6)),
7743 Some(DisplayRow(1)),
7744 )
7745 })
7746 .unwrap();
7747 assert_eq!(relative_rows.len(), 3);
7748 assert_eq!(relative_rows[&DisplayRow(3)], 2);
7749 assert_eq!(relative_rows[&DisplayRow(4)], 3);
7750 assert_eq!(relative_rows[&DisplayRow(5)], 4);
7751
7752 // works if cursor is after screen
7753 let relative_rows = window
7754 .update(cx, |editor, cx| {
7755 let snapshot = editor.snapshot(cx);
7756 element.calculate_relative_line_numbers(
7757 &snapshot,
7758 &(DisplayRow(0)..DisplayRow(3)),
7759 Some(DisplayRow(6)),
7760 )
7761 })
7762 .unwrap();
7763 assert_eq!(relative_rows.len(), 3);
7764 assert_eq!(relative_rows[&DisplayRow(0)], 5);
7765 assert_eq!(relative_rows[&DisplayRow(1)], 4);
7766 assert_eq!(relative_rows[&DisplayRow(2)], 3);
7767 }
7768
7769 #[gpui::test]
7770 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
7771 init_test(cx, |_| {});
7772
7773 let window = cx.add_window(|cx| {
7774 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
7775 Editor::new(EditorMode::Full, buffer, None, true, cx)
7776 });
7777 let cx = &mut VisualTestContext::from_window(*window, cx);
7778 let editor = window.root(cx).unwrap();
7779 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7780
7781 window
7782 .update(cx, |editor, cx| {
7783 editor.cursor_shape = CursorShape::Block;
7784 editor.change_selections(None, cx, |s| {
7785 s.select_ranges([
7786 Point::new(0, 0)..Point::new(1, 0),
7787 Point::new(3, 2)..Point::new(3, 3),
7788 Point::new(5, 6)..Point::new(6, 0),
7789 ]);
7790 });
7791 })
7792 .unwrap();
7793
7794 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7795 EditorElement::new(&editor, style)
7796 });
7797
7798 assert_eq!(state.selections.len(), 1);
7799 let local_selections = &state.selections[0].1;
7800 assert_eq!(local_selections.len(), 3);
7801 // moves cursor back one line
7802 assert_eq!(
7803 local_selections[0].head,
7804 DisplayPoint::new(DisplayRow(0), 6)
7805 );
7806 assert_eq!(
7807 local_selections[0].range,
7808 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
7809 );
7810
7811 // moves cursor back one column
7812 assert_eq!(
7813 local_selections[1].range,
7814 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
7815 );
7816 assert_eq!(
7817 local_selections[1].head,
7818 DisplayPoint::new(DisplayRow(3), 2)
7819 );
7820
7821 // leaves cursor on the max point
7822 assert_eq!(
7823 local_selections[2].range,
7824 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
7825 );
7826 assert_eq!(
7827 local_selections[2].head,
7828 DisplayPoint::new(DisplayRow(6), 0)
7829 );
7830
7831 // active lines does not include 1 (even though the range of the selection does)
7832 assert_eq!(
7833 state.active_rows.keys().cloned().collect::<Vec<_>>(),
7834 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
7835 );
7836
7837 // multi-buffer support
7838 // in DisplayPoint coordinates, this is what we're dealing with:
7839 // 0: [[file
7840 // 1: header
7841 // 2: section]]
7842 // 3: aaaaaa
7843 // 4: bbbbbb
7844 // 5: cccccc
7845 // 6:
7846 // 7: [[footer]]
7847 // 8: [[header]]
7848 // 9: ffffff
7849 // 10: gggggg
7850 // 11: hhhhhh
7851 // 12:
7852 // 13: [[footer]]
7853 // 14: [[file
7854 // 15: header
7855 // 16: section]]
7856 // 17: bbbbbb
7857 // 18: cccccc
7858 // 19: dddddd
7859 // 20: [[footer]]
7860 let window = cx.add_window(|cx| {
7861 let buffer = MultiBuffer::build_multi(
7862 [
7863 (
7864 &(sample_text(8, 6, 'a') + "\n"),
7865 vec![
7866 Point::new(0, 0)..Point::new(3, 0),
7867 Point::new(4, 0)..Point::new(7, 0),
7868 ],
7869 ),
7870 (
7871 &(sample_text(8, 6, 'a') + "\n"),
7872 vec![Point::new(1, 0)..Point::new(3, 0)],
7873 ),
7874 ],
7875 cx,
7876 );
7877 Editor::new(EditorMode::Full, buffer, None, true, cx)
7878 });
7879 let editor = window.root(cx).unwrap();
7880 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7881 let _state = window.update(cx, |editor, cx| {
7882 editor.cursor_shape = CursorShape::Block;
7883 editor.change_selections(None, cx, |s| {
7884 s.select_display_ranges([
7885 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
7886 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
7887 ]);
7888 });
7889 });
7890
7891 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7892 EditorElement::new(&editor, style)
7893 });
7894 assert_eq!(state.selections.len(), 1);
7895 let local_selections = &state.selections[0].1;
7896 assert_eq!(local_selections.len(), 2);
7897
7898 // moves cursor on excerpt boundary back a line
7899 // and doesn't allow selection to bleed through
7900 assert_eq!(
7901 local_selections[0].range,
7902 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
7903 );
7904 assert_eq!(
7905 local_selections[0].head,
7906 DisplayPoint::new(DisplayRow(6), 0)
7907 );
7908 // moves cursor on buffer boundary back two lines
7909 // and doesn't allow selection to bleed through
7910 assert_eq!(
7911 local_selections[1].range,
7912 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
7913 );
7914 assert_eq!(
7915 local_selections[1].head,
7916 DisplayPoint::new(DisplayRow(12), 0)
7917 );
7918 }
7919
7920 #[gpui::test]
7921 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
7922 init_test(cx, |_| {});
7923
7924 let window = cx.add_window(|cx| {
7925 let buffer = MultiBuffer::build_simple("", cx);
7926 Editor::new(EditorMode::Full, buffer, None, true, cx)
7927 });
7928 let cx = &mut VisualTestContext::from_window(*window, cx);
7929 let editor = window.root(cx).unwrap();
7930 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7931 window
7932 .update(cx, |editor, cx| {
7933 editor.set_placeholder_text("hello", cx);
7934 editor.insert_blocks(
7935 [BlockProperties {
7936 style: BlockStyle::Fixed,
7937 placement: BlockPlacement::Above(Anchor::min()),
7938 height: 3,
7939 render: Arc::new(|cx| div().h(3. * cx.line_height()).into_any()),
7940 priority: 0,
7941 }],
7942 None,
7943 cx,
7944 );
7945
7946 // Blur the editor so that it displays placeholder text.
7947 cx.blur();
7948 })
7949 .unwrap();
7950
7951 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7952 EditorElement::new(&editor, style)
7953 });
7954 assert_eq!(state.position_map.line_layouts.len(), 4);
7955 assert_eq!(state.line_numbers.len(), 1);
7956 assert_eq!(
7957 state
7958 .line_numbers
7959 .get(&MultiBufferRow(0))
7960 .and_then(|line_number| line_number.shaped_line.text.as_str()),
7961 Some("1")
7962 );
7963 }
7964
7965 #[gpui::test]
7966 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
7967 const TAB_SIZE: u32 = 4;
7968
7969 let input_text = "\t \t|\t| a b";
7970 let expected_invisibles = vec![
7971 Invisible::Tab {
7972 line_start_offset: 0,
7973 line_end_offset: TAB_SIZE as usize,
7974 },
7975 Invisible::Whitespace {
7976 line_offset: TAB_SIZE as usize,
7977 },
7978 Invisible::Tab {
7979 line_start_offset: TAB_SIZE as usize + 1,
7980 line_end_offset: TAB_SIZE as usize * 2,
7981 },
7982 Invisible::Tab {
7983 line_start_offset: TAB_SIZE as usize * 2 + 1,
7984 line_end_offset: TAB_SIZE as usize * 3,
7985 },
7986 Invisible::Whitespace {
7987 line_offset: TAB_SIZE as usize * 3 + 1,
7988 },
7989 Invisible::Whitespace {
7990 line_offset: TAB_SIZE as usize * 3 + 3,
7991 },
7992 ];
7993 assert_eq!(
7994 expected_invisibles.len(),
7995 input_text
7996 .chars()
7997 .filter(|initial_char| initial_char.is_whitespace())
7998 .count(),
7999 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
8000 );
8001
8002 for show_line_numbers in [true, false] {
8003 init_test(cx, |s| {
8004 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
8005 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
8006 });
8007
8008 let actual_invisibles = collect_invisibles_from_new_editor(
8009 cx,
8010 EditorMode::Full,
8011 input_text,
8012 px(500.0),
8013 show_line_numbers,
8014 );
8015
8016 assert_eq!(expected_invisibles, actual_invisibles);
8017 }
8018 }
8019
8020 #[gpui::test]
8021 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
8022 init_test(cx, |s| {
8023 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
8024 s.defaults.tab_size = NonZeroU32::new(4);
8025 });
8026
8027 for editor_mode_without_invisibles in [
8028 EditorMode::SingleLine { auto_width: false },
8029 EditorMode::AutoHeight { max_lines: 100 },
8030 ] {
8031 for show_line_numbers in [true, false] {
8032 let invisibles = collect_invisibles_from_new_editor(
8033 cx,
8034 editor_mode_without_invisibles,
8035 "\t\t\t| | a b",
8036 px(500.0),
8037 show_line_numbers,
8038 );
8039 assert!(invisibles.is_empty(),
8040 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
8041 }
8042 }
8043 }
8044
8045 #[gpui::test]
8046 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
8047 let tab_size = 4;
8048 let input_text = "a\tbcd ".repeat(9);
8049 let repeated_invisibles = [
8050 Invisible::Tab {
8051 line_start_offset: 1,
8052 line_end_offset: tab_size as usize,
8053 },
8054 Invisible::Whitespace {
8055 line_offset: tab_size as usize + 3,
8056 },
8057 Invisible::Whitespace {
8058 line_offset: tab_size as usize + 4,
8059 },
8060 Invisible::Whitespace {
8061 line_offset: tab_size as usize + 5,
8062 },
8063 Invisible::Whitespace {
8064 line_offset: tab_size as usize + 6,
8065 },
8066 Invisible::Whitespace {
8067 line_offset: tab_size as usize + 7,
8068 },
8069 ];
8070 let expected_invisibles = std::iter::once(repeated_invisibles)
8071 .cycle()
8072 .take(9)
8073 .flatten()
8074 .collect::<Vec<_>>();
8075 assert_eq!(
8076 expected_invisibles.len(),
8077 input_text
8078 .chars()
8079 .filter(|initial_char| initial_char.is_whitespace())
8080 .count(),
8081 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
8082 );
8083 info!("Expected invisibles: {expected_invisibles:?}");
8084
8085 init_test(cx, |_| {});
8086
8087 // Put the same string with repeating whitespace pattern into editors of various size,
8088 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
8089 let resize_step = 10.0;
8090 let mut editor_width = 200.0;
8091 while editor_width <= 1000.0 {
8092 for show_line_numbers in [true, false] {
8093 update_test_language_settings(cx, |s| {
8094 s.defaults.tab_size = NonZeroU32::new(tab_size);
8095 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
8096 s.defaults.preferred_line_length = Some(editor_width as u32);
8097 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
8098 });
8099
8100 let actual_invisibles = collect_invisibles_from_new_editor(
8101 cx,
8102 EditorMode::Full,
8103 &input_text,
8104 px(editor_width),
8105 show_line_numbers,
8106 );
8107
8108 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
8109 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
8110 let mut i = 0;
8111 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
8112 i = actual_index;
8113 match expected_invisibles.get(i) {
8114 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
8115 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
8116 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
8117 _ => {
8118 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
8119 }
8120 },
8121 None => {
8122 panic!("Unexpected extra invisible {actual_invisible:?} at index {i}")
8123 }
8124 }
8125 }
8126 let missing_expected_invisibles = &expected_invisibles[i + 1..];
8127 assert!(
8128 missing_expected_invisibles.is_empty(),
8129 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
8130 );
8131
8132 editor_width += resize_step;
8133 }
8134 }
8135 }
8136
8137 fn collect_invisibles_from_new_editor(
8138 cx: &mut TestAppContext,
8139 editor_mode: EditorMode,
8140 input_text: &str,
8141 editor_width: Pixels,
8142 show_line_numbers: bool,
8143 ) -> Vec<Invisible> {
8144 info!(
8145 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
8146 editor_width.0
8147 );
8148 let window = cx.add_window(|cx| {
8149 let buffer = MultiBuffer::build_simple(input_text, cx);
8150 Editor::new(editor_mode, buffer, None, true, cx)
8151 });
8152 let cx = &mut VisualTestContext::from_window(*window, cx);
8153 let editor = window.root(cx).unwrap();
8154
8155 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
8156 window
8157 .update(cx, |editor, cx| {
8158 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
8159 editor.set_wrap_width(Some(editor_width), cx);
8160 editor.set_show_line_numbers(show_line_numbers, cx);
8161 })
8162 .unwrap();
8163 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
8164 EditorElement::new(&editor, style)
8165 });
8166 state
8167 .position_map
8168 .line_layouts
8169 .iter()
8170 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
8171 .cloned()
8172 .collect()
8173 }
8174}