1use crate::{
2 blame_entry_tooltip::{blame_entry_relative_timestamp, BlameEntryTooltip},
3 display_map::{
4 Block, BlockContext, BlockStyle, DisplaySnapshot, HighlightedChunk, ToDisplayPoint,
5 },
6 editor_settings::{
7 CurrentLineHighlight, DoubleClickInMultibuffer, MultiCursorModifier, ScrollBeyondLastLine,
8 ShowScrollbar,
9 },
10 git::{
11 blame::{CommitDetails, GitBlame},
12 diff_hunk_to_display, DisplayDiffHunk,
13 },
14 hover_popover::{
15 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
16 },
17 hunk_diff::ExpandedHunk,
18 hunk_status,
19 items::BufferSearchHighlights,
20 mouse_context_menu::{self, MenuPosition, MouseContextMenu},
21 scroll::scroll_amount::ScrollAmount,
22 BlockId, CodeActionsMenu, CursorShape, CustomBlockId, DisplayPoint, DisplayRow,
23 DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode, EditorSettings,
24 EditorSnapshot, EditorStyle, ExpandExcerpts, FocusedBlock, GutterDimensions, HalfPageDown,
25 HalfPageUp, HandleInput, HoveredCursor, HoveredHunk, LineDown, LineUp, OpenExcerpts, PageDown,
26 PageUp, Point, RangeToAnchorExt, RowExt, RowRangeExt, SelectPhase, Selection, SoftWrap,
27 ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
28};
29use client::ParticipantIndex;
30use collections::{BTreeMap, HashMap};
31use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
32use gpui::Subscription;
33use gpui::{
34 anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
35 transparent_black, Action, AnchorCorner, AnyElement, AvailableSpace, Bounds, ClipboardItem,
36 ContentMask, Corners, CursorStyle, DispatchPhase, Edges, Element, ElementInputHandler, Entity,
37 EntityId, FontId, GlobalElementId, Hitbox, Hsla, InteractiveElement, IntoElement, Length,
38 ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad,
39 ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size,
40 StatefulInteractiveElement, Style, Styled, TextRun, TextStyle, TextStyleRefinement, View,
41 ViewContext, WeakView, WindowContext,
42};
43use itertools::Itertools;
44use language::{
45 language_settings::{
46 IndentGuideBackgroundColoring, IndentGuideColoring, IndentGuideSettings,
47 ShowWhitespaceSetting,
48 },
49 ChunkRendererContext,
50};
51use lsp::DiagnosticSeverity;
52use multi_buffer::{Anchor, MultiBufferPoint, MultiBufferRow};
53use project::{
54 project_settings::{GitGutterSetting, ProjectSettings},
55 ProjectPath,
56};
57use settings::Settings;
58use smallvec::{smallvec, SmallVec};
59use std::{
60 any::TypeId,
61 borrow::Cow,
62 cmp::{self, Ordering},
63 fmt::{self, Write},
64 iter, mem,
65 ops::{Deref, Range},
66 rc::Rc,
67 sync::Arc,
68};
69use sum_tree::Bias;
70use theme::{ActiveTheme, PlayerColor};
71use ui::prelude::*;
72use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
73use util::RangeExt;
74use util::ResultExt;
75use workspace::{item::Item, Workspace};
76
77struct SelectionLayout {
78 head: DisplayPoint,
79 cursor_shape: CursorShape,
80 is_newest: bool,
81 is_local: bool,
82 range: Range<DisplayPoint>,
83 active_rows: Range<DisplayRow>,
84 user_name: Option<SharedString>,
85}
86
87impl SelectionLayout {
88 fn new<T: ToPoint + ToDisplayPoint + Clone>(
89 selection: Selection<T>,
90 line_mode: bool,
91 cursor_shape: CursorShape,
92 map: &DisplaySnapshot,
93 is_newest: bool,
94 is_local: bool,
95 user_name: Option<SharedString>,
96 ) -> Self {
97 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
98 let display_selection = point_selection.map(|p| p.to_display_point(map));
99 let mut range = display_selection.range();
100 let mut head = display_selection.head();
101 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
102 ..map.next_line_boundary(point_selection.end).1.row();
103
104 // vim visual line mode
105 if line_mode {
106 let point_range = map.expand_to_line(point_selection.range());
107 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
108 }
109
110 // any vim visual mode (including line mode)
111 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
112 && !range.is_empty()
113 && !selection.reversed
114 {
115 if head.column() > 0 {
116 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
117 } else if head.row().0 > 0 && head != map.max_point() {
118 head = map.clip_point(
119 DisplayPoint::new(
120 head.row().previous_row(),
121 map.line_len(head.row().previous_row()),
122 ),
123 Bias::Left,
124 );
125 // updating range.end is a no-op unless you're cursor is
126 // on the newline containing a multi-buffer divider
127 // in which case the clip_point may have moved the head up
128 // an additional row.
129 range.end = DisplayPoint::new(head.row().next_row(), 0);
130 active_rows.end = head.row();
131 }
132 }
133
134 Self {
135 head,
136 cursor_shape,
137 is_newest,
138 is_local,
139 range,
140 active_rows,
141 user_name,
142 }
143 }
144}
145
146pub struct EditorElement {
147 editor: View<Editor>,
148 style: EditorStyle,
149}
150
151type DisplayRowDelta = u32;
152
153impl EditorElement {
154 pub(crate) const SCROLLBAR_WIDTH: Pixels = px(13.);
155
156 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
157 Self {
158 editor: editor.clone(),
159 style,
160 }
161 }
162
163 fn register_actions(&self, cx: &mut WindowContext) {
164 let view = &self.editor;
165 view.update(cx, |editor, cx| {
166 for action in editor.editor_actions.borrow().values() {
167 (action)(cx)
168 }
169 });
170
171 crate::rust_analyzer_ext::apply_related_actions(view, cx);
172 crate::clangd_ext::apply_related_actions(view, cx);
173 register_action(view, cx, Editor::move_left);
174 register_action(view, cx, Editor::move_right);
175 register_action(view, cx, Editor::move_down);
176 register_action(view, cx, Editor::move_down_by_lines);
177 register_action(view, cx, Editor::select_down_by_lines);
178 register_action(view, cx, Editor::move_up);
179 register_action(view, cx, Editor::move_up_by_lines);
180 register_action(view, cx, Editor::select_up_by_lines);
181 register_action(view, cx, Editor::select_page_down);
182 register_action(view, cx, Editor::select_page_up);
183 register_action(view, cx, Editor::cancel);
184 register_action(view, cx, Editor::newline);
185 register_action(view, cx, Editor::newline_above);
186 register_action(view, cx, Editor::newline_below);
187 register_action(view, cx, Editor::backspace);
188 register_action(view, cx, Editor::delete);
189 register_action(view, cx, Editor::tab);
190 register_action(view, cx, Editor::tab_prev);
191 register_action(view, cx, Editor::indent);
192 register_action(view, cx, Editor::outdent);
193 register_action(view, cx, Editor::delete_line);
194 register_action(view, cx, Editor::join_lines);
195 register_action(view, cx, Editor::sort_lines_case_sensitive);
196 register_action(view, cx, Editor::sort_lines_case_insensitive);
197 register_action(view, cx, Editor::reverse_lines);
198 register_action(view, cx, Editor::shuffle_lines);
199 register_action(view, cx, Editor::convert_to_upper_case);
200 register_action(view, cx, Editor::convert_to_lower_case);
201 register_action(view, cx, Editor::convert_to_title_case);
202 register_action(view, cx, Editor::convert_to_snake_case);
203 register_action(view, cx, Editor::convert_to_kebab_case);
204 register_action(view, cx, Editor::convert_to_upper_camel_case);
205 register_action(view, cx, Editor::convert_to_lower_camel_case);
206 register_action(view, cx, Editor::convert_to_opposite_case);
207 register_action(view, cx, Editor::delete_to_previous_word_start);
208 register_action(view, cx, Editor::delete_to_previous_subword_start);
209 register_action(view, cx, Editor::delete_to_next_word_end);
210 register_action(view, cx, Editor::delete_to_next_subword_end);
211 register_action(view, cx, Editor::delete_to_beginning_of_line);
212 register_action(view, cx, Editor::delete_to_end_of_line);
213 register_action(view, cx, Editor::cut_to_end_of_line);
214 register_action(view, cx, Editor::duplicate_line_up);
215 register_action(view, cx, Editor::duplicate_line_down);
216 register_action(view, cx, Editor::move_line_up);
217 register_action(view, cx, Editor::move_line_down);
218 register_action(view, cx, Editor::transpose);
219 register_action(view, cx, Editor::cut);
220 register_action(view, cx, Editor::copy);
221 register_action(view, cx, Editor::paste);
222 register_action(view, cx, Editor::undo);
223 register_action(view, cx, Editor::redo);
224 register_action(view, cx, Editor::move_page_up);
225 register_action(view, cx, Editor::move_page_down);
226 register_action(view, cx, Editor::next_screen);
227 register_action(view, cx, Editor::scroll_cursor_top);
228 register_action(view, cx, Editor::scroll_cursor_center);
229 register_action(view, cx, Editor::scroll_cursor_bottom);
230 register_action(view, cx, Editor::scroll_cursor_center_top_bottom);
231 register_action(view, cx, |editor, _: &LineDown, cx| {
232 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
233 });
234 register_action(view, cx, |editor, _: &LineUp, cx| {
235 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
236 });
237 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
238 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
239 });
240 register_action(view, cx, |editor, HandleInput(text): &HandleInput, cx| {
241 if text.is_empty() {
242 return;
243 }
244 editor.handle_input(text, cx);
245 });
246 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
247 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
248 });
249 register_action(view, cx, |editor, _: &PageDown, cx| {
250 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
251 });
252 register_action(view, cx, |editor, _: &PageUp, cx| {
253 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
254 });
255 register_action(view, cx, Editor::move_to_previous_word_start);
256 register_action(view, cx, Editor::move_to_previous_subword_start);
257 register_action(view, cx, Editor::move_to_next_word_end);
258 register_action(view, cx, Editor::move_to_next_subword_end);
259 register_action(view, cx, Editor::move_to_beginning_of_line);
260 register_action(view, cx, Editor::move_to_end_of_line);
261 register_action(view, cx, Editor::move_to_start_of_paragraph);
262 register_action(view, cx, Editor::move_to_end_of_paragraph);
263 register_action(view, cx, Editor::move_to_beginning);
264 register_action(view, cx, Editor::move_to_end);
265 register_action(view, cx, Editor::select_up);
266 register_action(view, cx, Editor::select_down);
267 register_action(view, cx, Editor::select_left);
268 register_action(view, cx, Editor::select_right);
269 register_action(view, cx, Editor::select_to_previous_word_start);
270 register_action(view, cx, Editor::select_to_previous_subword_start);
271 register_action(view, cx, Editor::select_to_next_word_end);
272 register_action(view, cx, Editor::select_to_next_subword_end);
273 register_action(view, cx, Editor::select_to_beginning_of_line);
274 register_action(view, cx, Editor::select_to_end_of_line);
275 register_action(view, cx, Editor::select_to_start_of_paragraph);
276 register_action(view, cx, Editor::select_to_end_of_paragraph);
277 register_action(view, cx, Editor::select_to_beginning);
278 register_action(view, cx, Editor::select_to_end);
279 register_action(view, cx, Editor::select_all);
280 register_action(view, cx, |editor, action, cx| {
281 editor.select_all_matches(action, cx).log_err();
282 });
283 register_action(view, cx, Editor::select_line);
284 register_action(view, cx, Editor::split_selection_into_lines);
285 register_action(view, cx, Editor::add_selection_above);
286 register_action(view, cx, Editor::add_selection_below);
287 register_action(view, cx, |editor, action, cx| {
288 editor.select_next(action, cx).log_err();
289 });
290 register_action(view, cx, |editor, action, cx| {
291 editor.select_previous(action, cx).log_err();
292 });
293 register_action(view, cx, Editor::toggle_comments);
294 register_action(view, cx, Editor::select_larger_syntax_node);
295 register_action(view, cx, Editor::select_smaller_syntax_node);
296 register_action(view, cx, Editor::select_enclosing_symbol);
297 register_action(view, cx, Editor::move_to_enclosing_bracket);
298 register_action(view, cx, Editor::undo_selection);
299 register_action(view, cx, Editor::redo_selection);
300 if !view.read(cx).is_singleton(cx) {
301 register_action(view, cx, Editor::expand_excerpts);
302 register_action(view, cx, Editor::expand_excerpts_up);
303 register_action(view, cx, Editor::expand_excerpts_down);
304 }
305 register_action(view, cx, Editor::go_to_diagnostic);
306 register_action(view, cx, Editor::go_to_prev_diagnostic);
307 register_action(view, cx, Editor::go_to_hunk);
308 register_action(view, cx, Editor::go_to_prev_hunk);
309 register_action(view, cx, |editor, a, cx| {
310 editor.go_to_definition(a, cx).detach_and_log_err(cx);
311 });
312 register_action(view, cx, |editor, a, cx| {
313 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
314 });
315 register_action(view, cx, |editor, a, cx| {
316 editor.go_to_declaration(a, cx).detach_and_log_err(cx);
317 });
318 register_action(view, cx, |editor, a, cx| {
319 editor.go_to_declaration_split(a, cx).detach_and_log_err(cx);
320 });
321 register_action(view, cx, |editor, a, cx| {
322 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
323 });
324 register_action(view, cx, |editor, a, cx| {
325 editor
326 .go_to_implementation_split(a, cx)
327 .detach_and_log_err(cx);
328 });
329 register_action(view, cx, |editor, a, cx| {
330 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
331 });
332 register_action(view, cx, |editor, a, cx| {
333 editor
334 .go_to_type_definition_split(a, cx)
335 .detach_and_log_err(cx);
336 });
337 register_action(view, cx, Editor::open_url);
338 register_action(view, cx, Editor::open_file);
339 register_action(view, cx, Editor::fold);
340 register_action(view, cx, Editor::fold_at);
341 register_action(view, cx, Editor::unfold_lines);
342 register_action(view, cx, Editor::unfold_at);
343 register_action(view, cx, Editor::fold_selected_ranges);
344 register_action(view, cx, Editor::show_completions);
345 register_action(view, cx, Editor::toggle_code_actions);
346 register_action(view, cx, Editor::open_excerpts);
347 register_action(view, cx, Editor::open_excerpts_in_split);
348 register_action(view, cx, Editor::toggle_soft_wrap);
349 register_action(view, cx, Editor::toggle_tab_bar);
350 register_action(view, cx, Editor::toggle_line_numbers);
351 register_action(view, cx, Editor::toggle_relative_line_numbers);
352 register_action(view, cx, Editor::toggle_indent_guides);
353 register_action(view, cx, Editor::toggle_inlay_hints);
354 register_action(view, cx, Editor::toggle_inline_completions);
355 register_action(view, cx, hover_popover::hover);
356 register_action(view, cx, Editor::reveal_in_finder);
357 register_action(view, cx, Editor::copy_path);
358 register_action(view, cx, Editor::copy_relative_path);
359 register_action(view, cx, Editor::copy_highlight_json);
360 register_action(view, cx, Editor::copy_permalink_to_line);
361 register_action(view, cx, Editor::open_permalink_to_line);
362 register_action(view, cx, Editor::copy_file_location);
363 register_action(view, cx, Editor::toggle_git_blame);
364 register_action(view, cx, Editor::toggle_git_blame_inline);
365 register_action(view, cx, Editor::toggle_hunk_diff);
366 register_action(view, cx, Editor::expand_all_hunk_diffs);
367 register_action(view, cx, |editor, action, cx| {
368 if let Some(task) = editor.format(action, cx) {
369 task.detach_and_log_err(cx);
370 } else {
371 cx.propagate();
372 }
373 });
374 register_action(view, cx, Editor::restart_language_server);
375 register_action(view, cx, Editor::cancel_language_server_work);
376 register_action(view, cx, Editor::show_character_palette);
377 register_action(view, cx, |editor, action, cx| {
378 if let Some(task) = editor.confirm_completion(action, cx) {
379 task.detach_and_log_err(cx);
380 } else {
381 cx.propagate();
382 }
383 });
384 register_action(view, cx, |editor, action, cx| {
385 if let Some(task) = editor.compose_completion(action, cx) {
386 task.detach_and_log_err(cx);
387 } else {
388 cx.propagate();
389 }
390 });
391 register_action(view, cx, |editor, action, cx| {
392 if let Some(task) = editor.confirm_code_action(action, cx) {
393 task.detach_and_log_err(cx);
394 } else {
395 cx.propagate();
396 }
397 });
398 register_action(view, cx, |editor, action, cx| {
399 if let Some(task) = editor.rename(action, cx) {
400 task.detach_and_log_err(cx);
401 } else {
402 cx.propagate();
403 }
404 });
405 register_action(view, cx, |editor, action, cx| {
406 if let Some(task) = editor.confirm_rename(action, cx) {
407 task.detach_and_log_err(cx);
408 } else {
409 cx.propagate();
410 }
411 });
412 register_action(view, cx, |editor, action, cx| {
413 if let Some(task) = editor.find_all_references(action, cx) {
414 task.detach_and_log_err(cx);
415 } else {
416 cx.propagate();
417 }
418 });
419 register_action(view, cx, Editor::show_signature_help);
420 register_action(view, cx, Editor::next_inline_completion);
421 register_action(view, cx, Editor::previous_inline_completion);
422 register_action(view, cx, Editor::show_inline_completion);
423 register_action(view, cx, Editor::context_menu_first);
424 register_action(view, cx, Editor::context_menu_prev);
425 register_action(view, cx, Editor::context_menu_next);
426 register_action(view, cx, Editor::context_menu_last);
427 register_action(view, cx, Editor::display_cursor_names);
428 register_action(view, cx, Editor::unique_lines_case_insensitive);
429 register_action(view, cx, Editor::unique_lines_case_sensitive);
430 register_action(view, cx, Editor::accept_partial_inline_completion);
431 register_action(view, cx, Editor::accept_inline_completion);
432 register_action(view, cx, Editor::revert_file);
433 register_action(view, cx, Editor::revert_selected_hunks);
434 register_action(view, cx, Editor::open_active_item_in_terminal)
435 }
436
437 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
438 let position_map = layout.position_map.clone();
439 cx.on_key_event({
440 let editor = self.editor.clone();
441 let text_hitbox = layout.text_hitbox.clone();
442 move |event: &ModifiersChangedEvent, phase, cx| {
443 if phase != DispatchPhase::Bubble {
444 return;
445 }
446 editor.update(cx, |editor, cx| {
447 if editor.hover_state.focused(cx) {
448 return;
449 }
450 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
451 })
452 }
453 });
454 }
455
456 fn modifiers_changed(
457 editor: &mut Editor,
458 event: &ModifiersChangedEvent,
459 position_map: &PositionMap,
460 text_hitbox: &Hitbox,
461 cx: &mut ViewContext<Editor>,
462 ) {
463 let mouse_position = cx.mouse_position();
464 if !text_hitbox.is_hovered(cx) {
465 return;
466 }
467
468 editor.update_hovered_link(
469 position_map.point_for_position(text_hitbox.bounds, mouse_position),
470 &position_map.snapshot,
471 event.modifiers,
472 cx,
473 )
474 }
475
476 fn mouse_left_down(
477 editor: &mut Editor,
478 event: &MouseDownEvent,
479 hovered_hunk: Option<HoveredHunk>,
480 position_map: &PositionMap,
481 text_hitbox: &Hitbox,
482 gutter_hitbox: &Hitbox,
483 cx: &mut ViewContext<Editor>,
484 ) {
485 if cx.default_prevented() {
486 return;
487 }
488
489 let mut click_count = event.click_count;
490 let mut modifiers = event.modifiers;
491
492 if let Some(hovered_hunk) = hovered_hunk {
493 if modifiers.control || modifiers.platform {
494 editor.toggle_hovered_hunk(&hovered_hunk, cx);
495 } else {
496 let display_range = hovered_hunk
497 .multi_buffer_range
498 .clone()
499 .to_display_points(&position_map.snapshot);
500 let hunk_bounds = Self::diff_hunk_bounds(
501 &position_map.snapshot,
502 position_map.line_height,
503 gutter_hitbox.bounds,
504 &DisplayDiffHunk::Unfolded {
505 diff_base_byte_range: hovered_hunk.diff_base_byte_range.clone(),
506 display_row_range: display_range.start.row()..display_range.end.row(),
507 multi_buffer_range: hovered_hunk.multi_buffer_range.clone(),
508 status: hovered_hunk.status,
509 },
510 );
511 if hunk_bounds.contains(&event.position) {
512 editor.open_hunk_context_menu(hovered_hunk, event.position, cx);
513 }
514 }
515 cx.notify();
516 return;
517 } else if gutter_hitbox.is_hovered(cx) {
518 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
519 } else if !text_hitbox.is_hovered(cx) {
520 return;
521 }
522
523 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
524 match EditorSettings::get_global(cx).double_click_in_multibuffer {
525 DoubleClickInMultibuffer::Select => {
526 // do nothing special on double click, all selection logic is below
527 }
528 DoubleClickInMultibuffer::Open => {
529 if modifiers.alt {
530 // if double click is made with alt, pretend it's a regular double click without opening and alt,
531 // and run the selection logic.
532 modifiers.alt = false;
533 } else {
534 // if double click is made without alt, open the corresponding excerp
535 editor.open_excerpts(&OpenExcerpts, cx);
536 return;
537 }
538 }
539 }
540 }
541
542 let point_for_position =
543 position_map.point_for_position(text_hitbox.bounds, event.position);
544 let position = point_for_position.previous_valid;
545 if modifiers.shift && modifiers.alt {
546 editor.select(
547 SelectPhase::BeginColumnar {
548 position,
549 reset: false,
550 goal_column: point_for_position.exact_unclipped.column(),
551 },
552 cx,
553 );
554 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
555 {
556 editor.select(
557 SelectPhase::Extend {
558 position,
559 click_count,
560 },
561 cx,
562 );
563 } else {
564 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
565 let multi_cursor_modifier = match multi_cursor_setting {
566 MultiCursorModifier::Alt => modifiers.alt,
567 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
568 };
569 editor.select(
570 SelectPhase::Begin {
571 position,
572 add: multi_cursor_modifier,
573 click_count,
574 },
575 cx,
576 );
577 }
578
579 cx.stop_propagation();
580 }
581
582 fn mouse_right_down(
583 editor: &mut Editor,
584 event: &MouseDownEvent,
585 position_map: &PositionMap,
586 text_hitbox: &Hitbox,
587 cx: &mut ViewContext<Editor>,
588 ) {
589 if !text_hitbox.is_hovered(cx) {
590 return;
591 }
592 let point_for_position =
593 position_map.point_for_position(text_hitbox.bounds, event.position);
594 mouse_context_menu::deploy_context_menu(
595 editor,
596 event.position,
597 point_for_position.previous_valid,
598 cx,
599 );
600 cx.stop_propagation();
601 }
602
603 fn mouse_middle_down(
604 editor: &mut Editor,
605 event: &MouseDownEvent,
606 position_map: &PositionMap,
607 text_hitbox: &Hitbox,
608 cx: &mut ViewContext<Editor>,
609 ) {
610 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
611 return;
612 }
613
614 let point_for_position =
615 position_map.point_for_position(text_hitbox.bounds, event.position);
616 let position = point_for_position.previous_valid;
617
618 editor.select(
619 SelectPhase::BeginColumnar {
620 position,
621 reset: true,
622 goal_column: point_for_position.exact_unclipped.column(),
623 },
624 cx,
625 );
626 }
627
628 fn mouse_up(
629 editor: &mut Editor,
630 event: &MouseUpEvent,
631 position_map: &PositionMap,
632 text_hitbox: &Hitbox,
633 cx: &mut ViewContext<Editor>,
634 ) {
635 let end_selection = editor.has_pending_selection();
636 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
637
638 if end_selection {
639 editor.select(SelectPhase::End, cx);
640 }
641
642 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
643 let multi_cursor_modifier = match multi_cursor_setting {
644 MultiCursorModifier::Alt => event.modifiers.secondary(),
645 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
646 };
647
648 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
649 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
650 editor.handle_click_hovered_link(point, event.modifiers, cx);
651
652 cx.stop_propagation();
653 } else if end_selection && pending_nonempty_selections {
654 cx.stop_propagation();
655 } else if cfg!(target_os = "linux")
656 && event.button == MouseButton::Middle
657 && (!text_hitbox.is_hovered(cx) || editor.read_only(cx))
658 {
659 return;
660 }
661 }
662
663 fn mouse_dragged(
664 editor: &mut Editor,
665 event: &MouseMoveEvent,
666 position_map: &PositionMap,
667 text_bounds: Bounds<Pixels>,
668 cx: &mut ViewContext<Editor>,
669 ) {
670 if !editor.has_pending_selection() {
671 return;
672 }
673
674 let point_for_position = position_map.point_for_position(text_bounds, event.position);
675 let mut scroll_delta = gpui::Point::<f32>::default();
676 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
677 let top = text_bounds.origin.y + vertical_margin;
678 let bottom = text_bounds.lower_left().y - vertical_margin;
679 if event.position.y < top {
680 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
681 }
682 if event.position.y > bottom {
683 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
684 }
685
686 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
687 let left = text_bounds.origin.x + horizontal_margin;
688 let right = text_bounds.upper_right().x - horizontal_margin;
689 if event.position.x < left {
690 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
691 }
692 if event.position.x > right {
693 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
694 }
695
696 editor.select(
697 SelectPhase::Update {
698 position: point_for_position.previous_valid,
699 goal_column: point_for_position.exact_unclipped.column(),
700 scroll_delta,
701 },
702 cx,
703 );
704 }
705
706 fn mouse_moved(
707 editor: &mut Editor,
708 event: &MouseMoveEvent,
709 position_map: &PositionMap,
710 text_hitbox: &Hitbox,
711 gutter_hitbox: &Hitbox,
712 cx: &mut ViewContext<Editor>,
713 ) {
714 let modifiers = event.modifiers;
715 let gutter_hovered = gutter_hitbox.is_hovered(cx);
716 editor.set_gutter_hovered(gutter_hovered, cx);
717
718 // Don't trigger hover popover if mouse is hovering over context menu
719 if text_hitbox.is_hovered(cx) {
720 let point_for_position =
721 position_map.point_for_position(text_hitbox.bounds, event.position);
722
723 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
724
725 if let Some(point) = point_for_position.as_valid() {
726 let anchor = position_map
727 .snapshot
728 .buffer_snapshot
729 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
730 hover_at(editor, Some(anchor), cx);
731 Self::update_visible_cursor(editor, point, position_map, cx);
732 } else {
733 hover_at(editor, None, cx);
734 }
735 } else {
736 editor.hide_hovered_link(cx);
737 hover_at(editor, None, cx);
738 if gutter_hovered {
739 cx.stop_propagation();
740 }
741 }
742 }
743
744 fn update_visible_cursor(
745 editor: &mut Editor,
746 point: DisplayPoint,
747 position_map: &PositionMap,
748 cx: &mut ViewContext<Editor>,
749 ) {
750 let snapshot = &position_map.snapshot;
751 let Some(hub) = editor.collaboration_hub() else {
752 return;
753 };
754 let start = snapshot.display_snapshot.clip_point(
755 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
756 Bias::Left,
757 );
758 let end = snapshot.display_snapshot.clip_point(
759 DisplayPoint::new(
760 point.row(),
761 (point.column() + 1).min(snapshot.line_len(point.row())),
762 ),
763 Bias::Right,
764 );
765
766 let range = snapshot
767 .buffer_snapshot
768 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
769 ..snapshot
770 .buffer_snapshot
771 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
772
773 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
774 return;
775 };
776 let key = crate::HoveredCursor {
777 replica_id: selection.replica_id,
778 selection_id: selection.selection.id,
779 };
780 editor.hovered_cursors.insert(
781 key.clone(),
782 cx.spawn(|editor, mut cx| async move {
783 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
784 editor
785 .update(&mut cx, |editor, cx| {
786 editor.hovered_cursors.remove(&key);
787 cx.notify();
788 })
789 .ok();
790 }),
791 );
792 cx.notify()
793 }
794
795 fn layout_selections(
796 &self,
797 start_anchor: Anchor,
798 end_anchor: Anchor,
799 snapshot: &EditorSnapshot,
800 start_row: DisplayRow,
801 end_row: DisplayRow,
802 cx: &mut WindowContext,
803 ) -> (
804 Vec<(PlayerColor, Vec<SelectionLayout>)>,
805 BTreeMap<DisplayRow, bool>,
806 Option<DisplayPoint>,
807 ) {
808 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
809 let mut active_rows = BTreeMap::new();
810 let mut newest_selection_head = None;
811 let editor = self.editor.read(cx);
812
813 if editor.show_local_selections {
814 let mut local_selections: Vec<Selection<Point>> = editor
815 .selections
816 .disjoint_in_range(start_anchor..end_anchor, cx);
817 local_selections.extend(editor.selections.pending(cx));
818 let mut layouts = Vec::new();
819 let newest = editor.selections.newest(cx);
820 for selection in local_selections.drain(..) {
821 let is_empty = selection.start == selection.end;
822 let is_newest = selection == newest;
823
824 let layout = SelectionLayout::new(
825 selection,
826 editor.selections.line_mode,
827 editor.cursor_shape,
828 &snapshot.display_snapshot,
829 is_newest,
830 editor.leader_peer_id.is_none(),
831 None,
832 );
833 if is_newest {
834 newest_selection_head = Some(layout.head);
835 }
836
837 for row in cmp::max(layout.active_rows.start.0, start_row.0)
838 ..=cmp::min(layout.active_rows.end.0, end_row.0)
839 {
840 let contains_non_empty_selection =
841 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
842 *contains_non_empty_selection |= !is_empty;
843 }
844 layouts.push(layout);
845 }
846
847 let player = if editor.read_only(cx) {
848 cx.theme().players().read_only()
849 } else {
850 self.style.local_player
851 };
852
853 selections.push((player, layouts));
854 }
855
856 if let Some(collaboration_hub) = &editor.collaboration_hub {
857 // When following someone, render the local selections in their color.
858 if let Some(leader_id) = editor.leader_peer_id {
859 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
860 if let Some(participant_index) = collaboration_hub
861 .user_participant_indices(cx)
862 .get(&collaborator.user_id)
863 {
864 if let Some((local_selection_style, _)) = selections.first_mut() {
865 *local_selection_style = cx
866 .theme()
867 .players()
868 .color_for_participant(participant_index.0);
869 }
870 }
871 }
872 }
873
874 let mut remote_selections = HashMap::default();
875 for selection in snapshot.remote_selections_in_range(
876 &(start_anchor..end_anchor),
877 collaboration_hub.as_ref(),
878 cx,
879 ) {
880 let selection_style = Self::get_participant_color(selection.participant_index, cx);
881
882 // Don't re-render the leader's selections, since the local selections
883 // match theirs.
884 if Some(selection.peer_id) == editor.leader_peer_id {
885 continue;
886 }
887 let key = HoveredCursor {
888 replica_id: selection.replica_id,
889 selection_id: selection.selection.id,
890 };
891
892 let is_shown =
893 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
894
895 remote_selections
896 .entry(selection.replica_id)
897 .or_insert((selection_style, Vec::new()))
898 .1
899 .push(SelectionLayout::new(
900 selection.selection,
901 selection.line_mode,
902 selection.cursor_shape,
903 &snapshot.display_snapshot,
904 false,
905 false,
906 if is_shown { selection.user_name } else { None },
907 ));
908 }
909
910 selections.extend(remote_selections.into_values());
911 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
912 let player = if editor.read_only(cx) {
913 cx.theme().players().read_only()
914 } else {
915 self.style.local_player
916 };
917 let layouts = snapshot
918 .buffer_snapshot
919 .selections_in_range(&(start_anchor..end_anchor), true)
920 .map(move |(_, line_mode, cursor_shape, selection)| {
921 SelectionLayout::new(
922 selection,
923 line_mode,
924 cursor_shape,
925 &snapshot.display_snapshot,
926 false,
927 false,
928 None,
929 )
930 })
931 .collect::<Vec<_>>();
932 selections.push((player, layouts));
933 }
934 (selections, active_rows, newest_selection_head)
935 }
936
937 fn collect_cursors(
938 &self,
939 snapshot: &EditorSnapshot,
940 cx: &mut WindowContext,
941 ) -> Vec<(DisplayPoint, Hsla)> {
942 let editor = self.editor.read(cx);
943 let mut cursors = Vec::new();
944 let mut skip_local = false;
945 let mut add_cursor = |anchor: Anchor, color| {
946 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
947 };
948 // Remote cursors
949 if let Some(collaboration_hub) = &editor.collaboration_hub {
950 for remote_selection in snapshot.remote_selections_in_range(
951 &(Anchor::min()..Anchor::max()),
952 collaboration_hub.deref(),
953 cx,
954 ) {
955 let color = Self::get_participant_color(remote_selection.participant_index, cx);
956 add_cursor(remote_selection.selection.head(), color.cursor);
957 if Some(remote_selection.peer_id) == editor.leader_peer_id {
958 skip_local = true;
959 }
960 }
961 }
962 // Local cursors
963 if !skip_local {
964 let color = cx.theme().players().local().cursor;
965 editor.selections.disjoint.iter().for_each(|selection| {
966 add_cursor(selection.head(), color);
967 });
968 if let Some(ref selection) = editor.selections.pending_anchor() {
969 add_cursor(selection.head(), color);
970 }
971 }
972 cursors
973 }
974
975 #[allow(clippy::too_many_arguments)]
976 fn layout_visible_cursors(
977 &self,
978 snapshot: &EditorSnapshot,
979 selections: &[(PlayerColor, Vec<SelectionLayout>)],
980 visible_display_row_range: Range<DisplayRow>,
981 line_layouts: &[LineWithInvisibles],
982 text_hitbox: &Hitbox,
983 content_origin: gpui::Point<Pixels>,
984 scroll_position: gpui::Point<f32>,
985 scroll_pixel_position: gpui::Point<Pixels>,
986 line_height: Pixels,
987 em_width: Pixels,
988 autoscroll_containing_element: bool,
989 cx: &mut WindowContext,
990 ) -> Vec<CursorLayout> {
991 let mut autoscroll_bounds = None;
992 let cursor_layouts = self.editor.update(cx, |editor, cx| {
993 let mut cursors = Vec::new();
994 for (player_color, selections) in selections {
995 for selection in selections {
996 let cursor_position = selection.head;
997
998 let in_range = visible_display_row_range.contains(&cursor_position.row());
999 if (selection.is_local && !editor.show_local_cursors(cx)) || !in_range {
1000 continue;
1001 }
1002
1003 let cursor_row_layout = &line_layouts
1004 [cursor_position.row().minus(visible_display_row_range.start) as usize];
1005 let cursor_column = cursor_position.column() as usize;
1006
1007 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1008 let mut block_width =
1009 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1010 if block_width == Pixels::ZERO {
1011 block_width = em_width;
1012 }
1013 let block_text = if let CursorShape::Block = selection.cursor_shape {
1014 snapshot.display_chars_at(cursor_position).next().and_then(
1015 |(character, _)| {
1016 let text = if character == '\n' {
1017 SharedString::from(" ")
1018 } else {
1019 SharedString::from(character.to_string())
1020 };
1021 let len = text.len();
1022
1023 let font = cursor_row_layout
1024 .font_id_for_index(cursor_column)
1025 .and_then(|cursor_font_id| {
1026 cx.text_system().get_font_for_id(cursor_font_id)
1027 })
1028 .unwrap_or(self.style.text.font());
1029
1030 cx.text_system()
1031 .shape_line(
1032 text,
1033 cursor_row_layout.font_size,
1034 &[TextRun {
1035 len,
1036 font,
1037 color: self.style.background,
1038 background_color: None,
1039 strikethrough: None,
1040 underline: None,
1041 }],
1042 )
1043 .log_err()
1044 },
1045 )
1046 } else {
1047 None
1048 };
1049
1050 let x = cursor_character_x - scroll_pixel_position.x;
1051 let y = (cursor_position.row().as_f32()
1052 - scroll_pixel_position.y / line_height)
1053 * line_height;
1054 if selection.is_newest {
1055 editor.pixel_position_of_newest_cursor = Some(point(
1056 text_hitbox.origin.x + x + block_width / 2.,
1057 text_hitbox.origin.y + y + line_height / 2.,
1058 ));
1059
1060 if autoscroll_containing_element {
1061 let top = text_hitbox.origin.y
1062 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1063 * line_height;
1064 let left = text_hitbox.origin.x
1065 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1066 .max(0.)
1067 * em_width;
1068
1069 let bottom = text_hitbox.origin.y
1070 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1071 * line_height;
1072 let right = text_hitbox.origin.x
1073 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1074 * em_width;
1075
1076 autoscroll_bounds =
1077 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1078 }
1079 }
1080
1081 let mut cursor = CursorLayout {
1082 color: player_color.cursor,
1083 block_width,
1084 origin: point(x, y),
1085 line_height,
1086 shape: selection.cursor_shape,
1087 block_text,
1088 cursor_name: None,
1089 };
1090 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1091 string: name,
1092 color: self.style.background,
1093 is_top_row: cursor_position.row().0 == 0,
1094 });
1095 cursor.layout(content_origin, cursor_name, cx);
1096 cursors.push(cursor);
1097 }
1098 }
1099 cursors
1100 });
1101
1102 if let Some(bounds) = autoscroll_bounds {
1103 cx.request_autoscroll(bounds);
1104 }
1105
1106 cursor_layouts
1107 }
1108
1109 fn layout_scrollbar(
1110 &self,
1111 snapshot: &EditorSnapshot,
1112 bounds: Bounds<Pixels>,
1113 scroll_position: gpui::Point<f32>,
1114 rows_per_page: f32,
1115 non_visible_cursors: bool,
1116 cx: &mut WindowContext,
1117 ) -> Option<ScrollbarLayout> {
1118 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1119 let show_scrollbars = match scrollbar_settings.show {
1120 ShowScrollbar::Auto => {
1121 let editor = self.editor.read(cx);
1122 let is_singleton = editor.is_singleton(cx);
1123 // Git
1124 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1125 ||
1126 // Buffer Search Results
1127 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1128 ||
1129 // Selected Symbol Occurrences
1130 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1131 ||
1132 // Diagnostics
1133 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
1134 ||
1135 // Cursors out of sight
1136 non_visible_cursors
1137 ||
1138 // Scrollmanager
1139 editor.scroll_manager.scrollbars_visible()
1140 }
1141 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1142 ShowScrollbar::Always => true,
1143 ShowScrollbar::Never => false,
1144 };
1145 if snapshot.mode != EditorMode::Full {
1146 return None;
1147 }
1148
1149 let visible_row_range = scroll_position.y..scroll_position.y + rows_per_page;
1150
1151 // If a drag took place after we started dragging the scrollbar,
1152 // cancel the scrollbar drag.
1153 if cx.has_active_drag() {
1154 self.editor.update(cx, |editor, cx| {
1155 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1156 });
1157 }
1158
1159 let track_bounds = Bounds::from_corners(
1160 point(self.scrollbar_left(&bounds), bounds.origin.y),
1161 point(bounds.lower_right().x, bounds.lower_left().y),
1162 );
1163
1164 let settings = EditorSettings::get_global(cx);
1165 let scroll_beyond_last_line: f32 = match settings.scroll_beyond_last_line {
1166 ScrollBeyondLastLine::OnePage => rows_per_page,
1167 ScrollBeyondLastLine::Off => 1.0,
1168 ScrollBeyondLastLine::VerticalScrollMargin => 1.0 + settings.vertical_scroll_margin,
1169 };
1170 let total_rows =
1171 (snapshot.max_point().row().as_f32() + scroll_beyond_last_line).max(rows_per_page);
1172 let height = bounds.size.height;
1173 let px_per_row = height / total_rows;
1174 let thumb_height = (rows_per_page * px_per_row).max(ScrollbarLayout::MIN_THUMB_HEIGHT);
1175 let row_height = (height - thumb_height) / (total_rows - rows_per_page).max(0.);
1176
1177 Some(ScrollbarLayout {
1178 hitbox: cx.insert_hitbox(track_bounds, false),
1179 visible_row_range,
1180 row_height,
1181 visible: show_scrollbars,
1182 thumb_height,
1183 })
1184 }
1185
1186 #[allow(clippy::too_many_arguments)]
1187 fn prepaint_gutter_fold_toggles(
1188 &self,
1189 toggles: &mut [Option<AnyElement>],
1190 line_height: Pixels,
1191 gutter_dimensions: &GutterDimensions,
1192 gutter_settings: crate::editor_settings::Gutter,
1193 scroll_pixel_position: gpui::Point<Pixels>,
1194 gutter_hitbox: &Hitbox,
1195 cx: &mut WindowContext,
1196 ) {
1197 for (ix, fold_indicator) in toggles.iter_mut().enumerate() {
1198 if let Some(fold_indicator) = fold_indicator {
1199 debug_assert!(gutter_settings.folds);
1200 let available_space = size(
1201 AvailableSpace::MinContent,
1202 AvailableSpace::Definite(line_height * 0.55),
1203 );
1204 let fold_indicator_size = fold_indicator.layout_as_root(available_space, cx);
1205
1206 let position = point(
1207 gutter_dimensions.width - gutter_dimensions.right_padding,
1208 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1209 );
1210 let centering_offset = point(
1211 (gutter_dimensions.fold_area_width() - fold_indicator_size.width) / 2.,
1212 (line_height - fold_indicator_size.height) / 2.,
1213 );
1214 let origin = gutter_hitbox.origin + position + centering_offset;
1215 fold_indicator.prepaint_as_root(origin, available_space, cx);
1216 }
1217 }
1218 }
1219
1220 #[allow(clippy::too_many_arguments)]
1221 fn prepaint_crease_trailers(
1222 &self,
1223 trailers: Vec<Option<AnyElement>>,
1224 lines: &[LineWithInvisibles],
1225 line_height: Pixels,
1226 content_origin: gpui::Point<Pixels>,
1227 scroll_pixel_position: gpui::Point<Pixels>,
1228 em_width: Pixels,
1229 cx: &mut WindowContext,
1230 ) -> Vec<Option<CreaseTrailerLayout>> {
1231 trailers
1232 .into_iter()
1233 .enumerate()
1234 .map(|(ix, element)| {
1235 let mut element = element?;
1236 let available_space = size(
1237 AvailableSpace::MinContent,
1238 AvailableSpace::Definite(line_height),
1239 );
1240 let size = element.layout_as_root(available_space, cx);
1241
1242 let line = &lines[ix];
1243 let padding = if line.width == Pixels::ZERO {
1244 Pixels::ZERO
1245 } else {
1246 4. * em_width
1247 };
1248 let position = point(
1249 scroll_pixel_position.x + line.width + padding,
1250 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1251 );
1252 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1253 let origin = content_origin + position + centering_offset;
1254 element.prepaint_as_root(origin, available_space, cx);
1255 Some(CreaseTrailerLayout {
1256 element,
1257 bounds: Bounds::new(origin, size),
1258 })
1259 })
1260 .collect()
1261 }
1262
1263 // Folds contained in a hunk are ignored apart from shrinking visual size
1264 // If a fold contains any hunks then that fold line is marked as modified
1265 fn layout_gutter_git_hunks(
1266 &self,
1267 line_height: Pixels,
1268 gutter_hitbox: &Hitbox,
1269 display_rows: Range<DisplayRow>,
1270 snapshot: &EditorSnapshot,
1271 cx: &mut WindowContext,
1272 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1273 let buffer_snapshot = &snapshot.buffer_snapshot;
1274
1275 let buffer_start_row = MultiBufferRow(
1276 DisplayPoint::new(display_rows.start, 0)
1277 .to_point(snapshot)
1278 .row,
1279 );
1280 let buffer_end_row = MultiBufferRow(
1281 DisplayPoint::new(display_rows.end, 0)
1282 .to_point(snapshot)
1283 .row,
1284 );
1285
1286 let git_gutter_setting = ProjectSettings::get_global(cx)
1287 .git
1288 .git_gutter
1289 .unwrap_or_default();
1290 let display_hunks = buffer_snapshot
1291 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1292 .map(|hunk| diff_hunk_to_display(&hunk, snapshot))
1293 .dedup()
1294 .map(|hunk| match git_gutter_setting {
1295 GitGutterSetting::TrackedFiles => {
1296 let hitbox = match hunk {
1297 DisplayDiffHunk::Unfolded { .. } => {
1298 let hunk_bounds = Self::diff_hunk_bounds(
1299 snapshot,
1300 line_height,
1301 gutter_hitbox.bounds,
1302 &hunk,
1303 );
1304 Some(cx.insert_hitbox(hunk_bounds, true))
1305 }
1306 DisplayDiffHunk::Folded { .. } => None,
1307 };
1308 (hunk, hitbox)
1309 }
1310 GitGutterSetting::Hide => (hunk, None),
1311 })
1312 .collect();
1313 display_hunks
1314 }
1315
1316 #[allow(clippy::too_many_arguments)]
1317 fn layout_inline_blame(
1318 &self,
1319 display_row: DisplayRow,
1320 display_snapshot: &DisplaySnapshot,
1321 line_layout: &LineWithInvisibles,
1322 crease_trailer: Option<&CreaseTrailerLayout>,
1323 em_width: Pixels,
1324 content_origin: gpui::Point<Pixels>,
1325 scroll_pixel_position: gpui::Point<Pixels>,
1326 line_height: Pixels,
1327 cx: &mut WindowContext,
1328 ) -> Option<AnyElement> {
1329 if !self
1330 .editor
1331 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1332 {
1333 return None;
1334 }
1335
1336 let workspace = self
1337 .editor
1338 .read(cx)
1339 .workspace
1340 .as_ref()
1341 .map(|(w, _)| w.clone());
1342
1343 let display_point = DisplayPoint::new(display_row, 0);
1344 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1345
1346 let blame = self.editor.read(cx).blame.clone()?;
1347 let blame_entry = blame
1348 .update(cx, |blame, cx| {
1349 blame.blame_for_rows([Some(buffer_row)], cx).next()
1350 })
1351 .flatten()?;
1352
1353 let mut element =
1354 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1355
1356 let start_y = content_origin.y
1357 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1358
1359 let start_x = {
1360 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1361
1362 let line_end = if let Some(crease_trailer) = crease_trailer {
1363 crease_trailer.bounds.right()
1364 } else {
1365 content_origin.x - scroll_pixel_position.x + line_layout.width
1366 };
1367 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1368
1369 let min_column_in_pixels = ProjectSettings::get_global(cx)
1370 .git
1371 .inline_blame
1372 .and_then(|settings| settings.min_column)
1373 .map(|col| self.column_pixels(col as usize, cx))
1374 .unwrap_or(px(0.));
1375 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1376
1377 cmp::max(padded_line_end, min_start)
1378 };
1379
1380 let absolute_offset = point(start_x, start_y);
1381 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1382
1383 Some(element)
1384 }
1385
1386 #[allow(clippy::too_many_arguments)]
1387 fn layout_blame_entries(
1388 &self,
1389 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1390 em_width: Pixels,
1391 scroll_position: gpui::Point<f32>,
1392 line_height: Pixels,
1393 gutter_hitbox: &Hitbox,
1394 max_width: Option<Pixels>,
1395 cx: &mut WindowContext,
1396 ) -> Option<Vec<AnyElement>> {
1397 if !self
1398 .editor
1399 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1400 {
1401 return None;
1402 }
1403
1404 let blame = self.editor.read(cx).blame.clone()?;
1405 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1406 blame.blame_for_rows(buffer_rows, cx).collect()
1407 });
1408
1409 let width = if let Some(max_width) = max_width {
1410 AvailableSpace::Definite(max_width)
1411 } else {
1412 AvailableSpace::MaxContent
1413 };
1414 let scroll_top = scroll_position.y * line_height;
1415 let start_x = em_width * 1;
1416
1417 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1418
1419 let shaped_lines = blamed_rows
1420 .into_iter()
1421 .enumerate()
1422 .flat_map(|(ix, blame_entry)| {
1423 if let Some(blame_entry) = blame_entry {
1424 let mut element = render_blame_entry(
1425 ix,
1426 &blame,
1427 blame_entry,
1428 &self.style,
1429 &mut last_used_color,
1430 self.editor.clone(),
1431 cx,
1432 );
1433
1434 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1435 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1436
1437 element.prepaint_as_root(
1438 absolute_offset,
1439 size(width, AvailableSpace::MinContent),
1440 cx,
1441 );
1442
1443 Some(element)
1444 } else {
1445 None
1446 }
1447 })
1448 .collect();
1449
1450 Some(shaped_lines)
1451 }
1452
1453 #[allow(clippy::too_many_arguments)]
1454 fn layout_indent_guides(
1455 &self,
1456 content_origin: gpui::Point<Pixels>,
1457 text_origin: gpui::Point<Pixels>,
1458 visible_buffer_range: Range<MultiBufferRow>,
1459 scroll_pixel_position: gpui::Point<Pixels>,
1460 line_height: Pixels,
1461 snapshot: &DisplaySnapshot,
1462 cx: &mut WindowContext,
1463 ) -> Option<Vec<IndentGuideLayout>> {
1464 let indent_guides = self.editor.update(cx, |editor, cx| {
1465 editor.indent_guides(visible_buffer_range, snapshot, cx)
1466 })?;
1467
1468 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1469 editor
1470 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1471 .unwrap_or_default()
1472 });
1473
1474 Some(
1475 indent_guides
1476 .into_iter()
1477 .enumerate()
1478 .filter_map(|(i, indent_guide)| {
1479 let single_indent_width =
1480 self.column_pixels(indent_guide.tab_size as usize, cx);
1481 let total_width = single_indent_width * indent_guide.depth as f32;
1482 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1483 if start_x >= text_origin.x {
1484 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1485 indent_guide.multibuffer_row_range.clone(),
1486 line_height,
1487 snapshot,
1488 );
1489
1490 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1491
1492 Some(IndentGuideLayout {
1493 origin: point(start_x, start_y),
1494 length,
1495 single_indent_width,
1496 depth: indent_guide.depth,
1497 active: active_indent_guide_indices.contains(&i),
1498 settings: indent_guide.settings,
1499 })
1500 } else {
1501 None
1502 }
1503 })
1504 .collect(),
1505 )
1506 }
1507
1508 fn calculate_indent_guide_bounds(
1509 row_range: Range<MultiBufferRow>,
1510 line_height: Pixels,
1511 snapshot: &DisplaySnapshot,
1512 ) -> (gpui::Pixels, gpui::Pixels) {
1513 let start_point = Point::new(row_range.start.0, 0);
1514 let end_point = Point::new(row_range.end.0, 0);
1515
1516 let row_range = start_point.to_display_point(snapshot).row()
1517 ..end_point.to_display_point(snapshot).row();
1518
1519 let mut prev_line = start_point;
1520 prev_line.row = prev_line.row.saturating_sub(1);
1521 let prev_line = prev_line.to_display_point(snapshot).row();
1522
1523 let mut cons_line = end_point;
1524 cons_line.row += 1;
1525 let cons_line = cons_line.to_display_point(snapshot).row();
1526
1527 let mut offset_y = row_range.start.0 as f32 * line_height;
1528 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1529
1530 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1531 if row_range.end == cons_line {
1532 length += line_height;
1533 }
1534
1535 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1536 // we want to extend the indent guide to the start of the block.
1537 let mut block_height = 0;
1538 let mut block_offset = 0;
1539 let mut found_excerpt_header = false;
1540 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1541 if matches!(block, Block::ExcerptHeader { .. }) {
1542 found_excerpt_header = true;
1543 break;
1544 }
1545 block_offset += block.height();
1546 block_height += block.height();
1547 }
1548 if !found_excerpt_header {
1549 offset_y -= block_offset as f32 * line_height;
1550 length += block_height as f32 * line_height;
1551 }
1552
1553 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1554 // we want to ensure that the indent guide stops before the excerpt header.
1555 let mut block_height = 0;
1556 let mut found_excerpt_header = false;
1557 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1558 if matches!(block, Block::ExcerptHeader { .. }) {
1559 found_excerpt_header = true;
1560 }
1561 block_height += block.height();
1562 }
1563 if found_excerpt_header {
1564 length -= block_height as f32 * line_height;
1565 }
1566
1567 (offset_y, length)
1568 }
1569
1570 #[allow(clippy::too_many_arguments)]
1571 fn layout_run_indicators(
1572 &self,
1573 line_height: Pixels,
1574 range: Range<DisplayRow>,
1575 scroll_pixel_position: gpui::Point<Pixels>,
1576 gutter_dimensions: &GutterDimensions,
1577 gutter_hitbox: &Hitbox,
1578 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1579 snapshot: &EditorSnapshot,
1580 cx: &mut WindowContext,
1581 ) -> Vec<AnyElement> {
1582 self.editor.update(cx, |editor, cx| {
1583 let active_task_indicator_row =
1584 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1585 deployed_from_indicator,
1586 actions,
1587 ..
1588 })) = editor.context_menu.read().as_ref()
1589 {
1590 actions
1591 .tasks
1592 .as_ref()
1593 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1594 .or(*deployed_from_indicator)
1595 } else {
1596 None
1597 };
1598
1599 editor
1600 .tasks
1601 .iter()
1602 .filter_map(|(_, tasks)| {
1603 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1604 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1605 let display_row = multibuffer_point.to_display_point(snapshot).row();
1606 if range.start > display_row || range.end < display_row {
1607 return None;
1608 }
1609 if snapshot.is_line_folded(multibuffer_row) {
1610 return None;
1611 }
1612 let button = editor.render_run_indicator(
1613 &self.style,
1614 Some(display_row) == active_task_indicator_row,
1615 display_row,
1616 cx,
1617 );
1618
1619 let button = prepaint_gutter_button(
1620 button,
1621 display_row,
1622 line_height,
1623 gutter_dimensions,
1624 scroll_pixel_position,
1625 gutter_hitbox,
1626 rows_with_hunk_bounds,
1627 cx,
1628 );
1629 Some(button)
1630 })
1631 .collect_vec()
1632 })
1633 }
1634
1635 #[allow(clippy::too_many_arguments)]
1636 fn layout_code_actions_indicator(
1637 &self,
1638 line_height: Pixels,
1639 newest_selection_head: DisplayPoint,
1640 scroll_pixel_position: gpui::Point<Pixels>,
1641 gutter_dimensions: &GutterDimensions,
1642 gutter_hitbox: &Hitbox,
1643 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1644 cx: &mut WindowContext,
1645 ) -> Option<AnyElement> {
1646 let mut active = false;
1647 let mut button = None;
1648 let row = newest_selection_head.row();
1649 self.editor.update(cx, |editor, cx| {
1650 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1651 deployed_from_indicator,
1652 ..
1653 })) = editor.context_menu.read().as_ref()
1654 {
1655 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1656 };
1657 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1658 });
1659
1660 let button = prepaint_gutter_button(
1661 button?,
1662 row,
1663 line_height,
1664 gutter_dimensions,
1665 scroll_pixel_position,
1666 gutter_hitbox,
1667 rows_with_hunk_bounds,
1668 cx,
1669 );
1670
1671 Some(button)
1672 }
1673
1674 fn get_participant_color(
1675 participant_index: Option<ParticipantIndex>,
1676 cx: &WindowContext,
1677 ) -> PlayerColor {
1678 if let Some(index) = participant_index {
1679 cx.theme().players().color_for_participant(index.0)
1680 } else {
1681 cx.theme().players().absent()
1682 }
1683 }
1684
1685 fn calculate_relative_line_numbers(
1686 &self,
1687 snapshot: &EditorSnapshot,
1688 rows: &Range<DisplayRow>,
1689 relative_to: Option<DisplayRow>,
1690 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1691 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1692 let Some(relative_to) = relative_to else {
1693 return relative_rows;
1694 };
1695
1696 let start = rows.start.min(relative_to);
1697 let end = rows.end.max(relative_to);
1698
1699 let buffer_rows = snapshot
1700 .buffer_rows(start)
1701 .take(1 + end.minus(start) as usize)
1702 .collect::<Vec<_>>();
1703
1704 let head_idx = relative_to.minus(start);
1705 let mut delta = 1;
1706 let mut i = head_idx + 1;
1707 while i < buffer_rows.len() as u32 {
1708 if buffer_rows[i as usize].is_some() {
1709 if rows.contains(&DisplayRow(i + start.0)) {
1710 relative_rows.insert(DisplayRow(i + start.0), delta);
1711 }
1712 delta += 1;
1713 }
1714 i += 1;
1715 }
1716 delta = 1;
1717 i = head_idx.min(buffer_rows.len() as u32 - 1);
1718 while i > 0 && buffer_rows[i as usize].is_none() {
1719 i -= 1;
1720 }
1721
1722 while i > 0 {
1723 i -= 1;
1724 if buffer_rows[i as usize].is_some() {
1725 if rows.contains(&DisplayRow(i + start.0)) {
1726 relative_rows.insert(DisplayRow(i + start.0), delta);
1727 }
1728 delta += 1;
1729 }
1730 }
1731
1732 relative_rows
1733 }
1734
1735 fn layout_line_numbers(
1736 &self,
1737 rows: Range<DisplayRow>,
1738 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1739 active_rows: &BTreeMap<DisplayRow, bool>,
1740 newest_selection_head: Option<DisplayPoint>,
1741 snapshot: &EditorSnapshot,
1742 cx: &mut WindowContext,
1743 ) -> Vec<Option<ShapedLine>> {
1744 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
1745 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
1746 });
1747 if !include_line_numbers {
1748 return Vec::new();
1749 }
1750
1751 let editor = self.editor.read(cx);
1752 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1753 let newest = editor.selections.newest::<Point>(cx);
1754 SelectionLayout::new(
1755 newest,
1756 editor.selections.line_mode,
1757 editor.cursor_shape,
1758 &snapshot.display_snapshot,
1759 true,
1760 true,
1761 None,
1762 )
1763 .head
1764 });
1765 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1766
1767 let is_relative = editor.should_use_relative_line_numbers(cx);
1768 let relative_to = if is_relative {
1769 Some(newest_selection_head.row())
1770 } else {
1771 None
1772 };
1773 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
1774 let mut line_number = String::new();
1775 buffer_rows
1776 .into_iter()
1777 .enumerate()
1778 .map(|(ix, multibuffer_row)| {
1779 let multibuffer_row = multibuffer_row?;
1780 let display_row = DisplayRow(rows.start.0 + ix as u32);
1781 let color = if active_rows.contains_key(&display_row) {
1782 cx.theme().colors().editor_active_line_number
1783 } else {
1784 cx.theme().colors().editor_line_number
1785 };
1786 line_number.clear();
1787 let default_number = multibuffer_row.0 + 1;
1788 let number = relative_rows
1789 .get(&DisplayRow(ix as u32 + rows.start.0))
1790 .unwrap_or(&default_number);
1791 write!(&mut line_number, "{number}").unwrap();
1792 let run = TextRun {
1793 len: line_number.len(),
1794 font: self.style.text.font(),
1795 color,
1796 background_color: None,
1797 underline: None,
1798 strikethrough: None,
1799 };
1800 let shaped_line = cx
1801 .text_system()
1802 .shape_line(line_number.clone().into(), font_size, &[run])
1803 .unwrap();
1804 Some(shaped_line)
1805 })
1806 .collect()
1807 }
1808
1809 fn layout_gutter_fold_toggles(
1810 &self,
1811 rows: Range<DisplayRow>,
1812 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1813 active_rows: &BTreeMap<DisplayRow, bool>,
1814 snapshot: &EditorSnapshot,
1815 cx: &mut WindowContext,
1816 ) -> Vec<Option<AnyElement>> {
1817 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
1818 && snapshot.mode == EditorMode::Full
1819 && self.editor.read(cx).is_singleton(cx);
1820 if include_fold_statuses {
1821 buffer_rows
1822 .into_iter()
1823 .enumerate()
1824 .map(|(ix, row)| {
1825 if let Some(multibuffer_row) = row {
1826 let display_row = DisplayRow(rows.start.0 + ix as u32);
1827 let active = active_rows.contains_key(&display_row);
1828 snapshot.render_fold_toggle(
1829 multibuffer_row,
1830 active,
1831 self.editor.clone(),
1832 cx,
1833 )
1834 } else {
1835 None
1836 }
1837 })
1838 .collect()
1839 } else {
1840 Vec::new()
1841 }
1842 }
1843
1844 fn layout_crease_trailers(
1845 &self,
1846 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1847 snapshot: &EditorSnapshot,
1848 cx: &mut WindowContext,
1849 ) -> Vec<Option<AnyElement>> {
1850 buffer_rows
1851 .into_iter()
1852 .map(|row| {
1853 if let Some(multibuffer_row) = row {
1854 snapshot.render_crease_trailer(multibuffer_row, cx)
1855 } else {
1856 None
1857 }
1858 })
1859 .collect()
1860 }
1861
1862 fn layout_lines(
1863 rows: Range<DisplayRow>,
1864 line_number_layouts: &[Option<ShapedLine>],
1865 snapshot: &EditorSnapshot,
1866 style: &EditorStyle,
1867 editor_width: Pixels,
1868 cx: &mut WindowContext,
1869 ) -> Vec<LineWithInvisibles> {
1870 if rows.start >= rows.end {
1871 return Vec::new();
1872 }
1873
1874 // Show the placeholder when the editor is empty
1875 if snapshot.is_empty() {
1876 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1877 let placeholder_color = cx.theme().colors().text_placeholder;
1878 let placeholder_text = snapshot.placeholder_text();
1879
1880 let placeholder_lines = placeholder_text
1881 .as_ref()
1882 .map_or("", AsRef::as_ref)
1883 .split('\n')
1884 .skip(rows.start.0 as usize)
1885 .chain(iter::repeat(""))
1886 .take(rows.len());
1887 placeholder_lines
1888 .filter_map(move |line| {
1889 let run = TextRun {
1890 len: line.len(),
1891 font: style.text.font(),
1892 color: placeholder_color,
1893 background_color: None,
1894 underline: Default::default(),
1895 strikethrough: None,
1896 };
1897 cx.text_system()
1898 .shape_line(line.to_string().into(), font_size, &[run])
1899 .log_err()
1900 })
1901 .map(|line| LineWithInvisibles {
1902 width: line.width,
1903 len: line.len,
1904 fragments: smallvec![LineFragment::Text(line)],
1905 invisibles: Vec::new(),
1906 font_size,
1907 })
1908 .collect()
1909 } else {
1910 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
1911 LineWithInvisibles::from_chunks(
1912 chunks,
1913 &style.text,
1914 MAX_LINE_LEN,
1915 rows.len(),
1916 line_number_layouts,
1917 snapshot.mode,
1918 editor_width,
1919 cx,
1920 )
1921 }
1922 }
1923
1924 fn prepaint_lines(
1925 &self,
1926 start_row: DisplayRow,
1927 line_layouts: &mut [LineWithInvisibles],
1928 line_height: Pixels,
1929 scroll_pixel_position: gpui::Point<Pixels>,
1930 content_origin: gpui::Point<Pixels>,
1931 cx: &mut WindowContext,
1932 ) -> SmallVec<[AnyElement; 1]> {
1933 let mut line_elements = SmallVec::new();
1934 for (ix, line) in line_layouts.iter_mut().enumerate() {
1935 let row = start_row + DisplayRow(ix as u32);
1936 line.prepaint(
1937 line_height,
1938 scroll_pixel_position,
1939 row,
1940 content_origin,
1941 &mut line_elements,
1942 cx,
1943 );
1944 }
1945 line_elements
1946 }
1947
1948 #[allow(clippy::too_many_arguments)]
1949 fn render_block(
1950 &self,
1951 block: &Block,
1952 available_width: AvailableSpace,
1953 block_id: BlockId,
1954 block_row_start: DisplayRow,
1955 snapshot: &EditorSnapshot,
1956 text_x: Pixels,
1957 rows: &Range<DisplayRow>,
1958 line_layouts: &[LineWithInvisibles],
1959 gutter_dimensions: &GutterDimensions,
1960 line_height: Pixels,
1961 em_width: Pixels,
1962 text_hitbox: &Hitbox,
1963 editor_width: Pixels,
1964 scroll_width: &mut Pixels,
1965 resized_blocks: &mut HashMap<CustomBlockId, u32>,
1966 cx: &mut WindowContext,
1967 ) -> (AnyElement, Size<Pixels>) {
1968 let mut element = match block {
1969 Block::Custom(block) => {
1970 let align_to = block
1971 .position()
1972 .to_point(&snapshot.buffer_snapshot)
1973 .to_display_point(snapshot);
1974 let anchor_x = text_x
1975 + if rows.contains(&align_to.row()) {
1976 line_layouts[align_to.row().minus(rows.start) as usize]
1977 .x_for_index(align_to.column() as usize)
1978 } else {
1979 layout_line(align_to.row(), snapshot, &self.style, editor_width, cx)
1980 .x_for_index(align_to.column() as usize)
1981 };
1982
1983 div()
1984 .size_full()
1985 .child(block.render(&mut BlockContext {
1986 context: cx,
1987 anchor_x,
1988 gutter_dimensions,
1989 line_height,
1990 em_width,
1991 block_id,
1992 max_width: text_hitbox.size.width.max(*scroll_width),
1993 editor_style: &self.style,
1994 }))
1995 .cursor(CursorStyle::Arrow)
1996 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
1997 .into_any_element()
1998 }
1999
2000 Block::ExcerptHeader {
2001 buffer,
2002 range,
2003 starts_new_buffer,
2004 height,
2005 id,
2006 show_excerpt_controls,
2007 ..
2008 } => {
2009 let include_root = self
2010 .editor
2011 .read(cx)
2012 .project
2013 .as_ref()
2014 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2015 .unwrap_or_default();
2016
2017 #[derive(Clone)]
2018 struct JumpData {
2019 position: Point,
2020 anchor: text::Anchor,
2021 path: ProjectPath,
2022 line_offset_from_top: u32,
2023 }
2024
2025 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
2026 let jump_path = ProjectPath {
2027 worktree_id: file.worktree_id(cx),
2028 path: file.path.clone(),
2029 };
2030 let jump_anchor = range
2031 .primary
2032 .as_ref()
2033 .map_or(range.context.start, |primary| primary.start);
2034
2035 let excerpt_start = range.context.start;
2036 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2037 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
2038 0
2039 } else {
2040 let excerpt_start_row =
2041 language::ToPoint::to_point(&jump_anchor, buffer).row;
2042 jump_position.row - excerpt_start_row
2043 };
2044
2045 let line_offset_from_top =
2046 block_row_start.0 + *height + offset_from_excerpt_start
2047 - snapshot
2048 .scroll_anchor
2049 .scroll_position(&snapshot.display_snapshot)
2050 .y as u32;
2051
2052 JumpData {
2053 position: jump_position,
2054 anchor: jump_anchor,
2055 path: jump_path,
2056 line_offset_from_top,
2057 }
2058 });
2059
2060 let icon_offset = gutter_dimensions.width
2061 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2062
2063 let element = if *starts_new_buffer {
2064 let path = buffer.resolve_file_path(cx, include_root);
2065 let mut filename = None;
2066 let mut parent_path = None;
2067 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2068 if let Some(path) = path {
2069 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2070 parent_path = path
2071 .parent()
2072 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2073 }
2074
2075 let header_padding = px(6.0);
2076
2077 v_flex()
2078 .id(("path excerpt header", EntityId::from(block_id)))
2079 .w_full()
2080 .px(header_padding)
2081 .child(
2082 h_flex()
2083 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2084 .id("path header block")
2085 .h(2. * cx.line_height())
2086 .pl(gpui::px(12.))
2087 .pr(gpui::px(8.))
2088 .rounded_md()
2089 .shadow_md()
2090 .border_1()
2091 .border_color(cx.theme().colors().border)
2092 .bg(cx.theme().colors().editor_subheader_background)
2093 .justify_between()
2094 .hover(|style| style.bg(cx.theme().colors().element_hover))
2095 .child(
2096 h_flex().gap_3().child(
2097 h_flex()
2098 .gap_2()
2099 .child(
2100 filename
2101 .map(SharedString::from)
2102 .unwrap_or_else(|| "untitled".into()),
2103 )
2104 .when_some(parent_path, |then, path| {
2105 then.child(
2106 div()
2107 .child(path)
2108 .text_color(cx.theme().colors().text_muted),
2109 )
2110 }),
2111 ),
2112 )
2113 .when_some(jump_data.clone(), |el, jump_data| {
2114 el.child(Icon::new(IconName::ArrowUpRight))
2115 .cursor_pointer()
2116 .tooltip(|cx| {
2117 Tooltip::for_action("Jump to File", &OpenExcerpts, cx)
2118 })
2119 .on_mouse_down(MouseButton::Left, |_, cx| {
2120 cx.stop_propagation()
2121 })
2122 .on_click(cx.listener_for(&self.editor, {
2123 move |editor, _, cx| {
2124 editor.jump(
2125 jump_data.path.clone(),
2126 jump_data.position,
2127 jump_data.anchor,
2128 jump_data.line_offset_from_top,
2129 cx,
2130 );
2131 }
2132 }))
2133 }),
2134 )
2135 .children(show_excerpt_controls.then(|| {
2136 h_flex()
2137 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.333)))
2138 .h(1. * cx.line_height())
2139 .pt_1()
2140 .justify_end()
2141 .flex_none()
2142 .w(icon_offset - header_padding)
2143 .child(
2144 ButtonLike::new("expand-icon")
2145 .style(ButtonStyle::Transparent)
2146 .child(
2147 svg()
2148 .path(IconName::ArrowUpFromLine.path())
2149 .size(IconSize::XSmall.rems())
2150 .text_color(cx.theme().colors().editor_line_number)
2151 .group("")
2152 .hover(|style| {
2153 style.text_color(
2154 cx.theme()
2155 .colors()
2156 .editor_active_line_number,
2157 )
2158 }),
2159 )
2160 .on_click(cx.listener_for(&self.editor, {
2161 let id = *id;
2162 move |editor, _, cx| {
2163 editor.expand_excerpt(
2164 id,
2165 multi_buffer::ExpandExcerptDirection::Up,
2166 cx,
2167 );
2168 }
2169 }))
2170 .tooltip({
2171 move |cx| {
2172 Tooltip::for_action(
2173 "Expand Excerpt",
2174 &ExpandExcerpts { lines: 0 },
2175 cx,
2176 )
2177 }
2178 }),
2179 )
2180 }))
2181 } else {
2182 v_flex()
2183 .id(("excerpt header", EntityId::from(block_id)))
2184 .w_full()
2185 .h(snapshot.excerpt_header_height() as f32 * cx.line_height())
2186 .child(
2187 div()
2188 .flex()
2189 .v_flex()
2190 .justify_start()
2191 .id("jump to collapsed context")
2192 .w(relative(1.0))
2193 .h_full()
2194 .child(
2195 div()
2196 .h_px()
2197 .w_full()
2198 .bg(cx.theme().colors().border_variant)
2199 .group_hover("excerpt-jump-action", |style| {
2200 style.bg(cx.theme().colors().border)
2201 }),
2202 ),
2203 )
2204 .child(
2205 h_flex()
2206 .justify_end()
2207 .flex_none()
2208 .w(icon_offset)
2209 .h_full()
2210 .child(
2211 show_excerpt_controls
2212 .then(|| {
2213 ButtonLike::new("expand-icon")
2214 .style(ButtonStyle::Transparent)
2215 .child(
2216 svg()
2217 .path(IconName::ArrowUpFromLine.path())
2218 .size(IconSize::XSmall.rems())
2219 .text_color(
2220 cx.theme().colors().editor_line_number,
2221 )
2222 .group("")
2223 .hover(|style| {
2224 style.text_color(
2225 cx.theme()
2226 .colors()
2227 .editor_active_line_number,
2228 )
2229 }),
2230 )
2231 .on_click(cx.listener_for(&self.editor, {
2232 let id = *id;
2233 move |editor, _, cx| {
2234 editor.expand_excerpt(
2235 id,
2236 multi_buffer::ExpandExcerptDirection::Up,
2237 cx,
2238 );
2239 }
2240 }))
2241 .tooltip({
2242 move |cx| {
2243 Tooltip::for_action(
2244 "Expand Excerpt",
2245 &ExpandExcerpts { lines: 0 },
2246 cx,
2247 )
2248 }
2249 })
2250 })
2251 .unwrap_or_else(|| {
2252 ButtonLike::new("jump-icon")
2253 .style(ButtonStyle::Transparent)
2254 .child(
2255 svg()
2256 .path(IconName::ArrowUpRight.path())
2257 .size(IconSize::XSmall.rems())
2258 .text_color(
2259 cx.theme().colors().border_variant,
2260 )
2261 .group("excerpt-jump-action")
2262 .group_hover(
2263 "excerpt-jump-action",
2264 |style| {
2265 style.text_color(
2266 cx.theme().colors().border,
2267 )
2268 },
2269 ),
2270 )
2271 .when_some(jump_data.clone(), |this, jump_data| {
2272 this.on_click(cx.listener_for(&self.editor, {
2273 let path = jump_data.path.clone();
2274 move |editor, _, cx| {
2275 cx.stop_propagation();
2276
2277 editor.jump(
2278 path.clone(),
2279 jump_data.position,
2280 jump_data.anchor,
2281 jump_data.line_offset_from_top,
2282 cx,
2283 );
2284 }
2285 }))
2286 .tooltip(move |cx| {
2287 Tooltip::for_action(
2288 format!(
2289 "Jump to {}:L{}",
2290 jump_data.path.path.display(),
2291 jump_data.position.row + 1
2292 ),
2293 &OpenExcerpts,
2294 cx,
2295 )
2296 })
2297 })
2298 }),
2299 ),
2300 )
2301 .group("excerpt-jump-action")
2302 .cursor_pointer()
2303 .when_some(jump_data.clone(), |this, jump_data| {
2304 this.on_click(cx.listener_for(&self.editor, {
2305 let path = jump_data.path.clone();
2306 move |editor, _, cx| {
2307 cx.stop_propagation();
2308
2309 editor.jump(
2310 path.clone(),
2311 jump_data.position,
2312 jump_data.anchor,
2313 jump_data.line_offset_from_top,
2314 cx,
2315 );
2316 }
2317 }))
2318 .tooltip(move |cx| {
2319 Tooltip::for_action(
2320 format!(
2321 "Jump to {}:L{}",
2322 jump_data.path.path.display(),
2323 jump_data.position.row + 1
2324 ),
2325 &OpenExcerpts,
2326 cx,
2327 )
2328 })
2329 })
2330 };
2331 element.into_any()
2332 }
2333
2334 Block::ExcerptFooter { id, .. } => {
2335 let element = v_flex()
2336 .id(("excerpt footer", EntityId::from(block_id)))
2337 .w_full()
2338 .h(snapshot.excerpt_footer_height() as f32 * cx.line_height())
2339 .child(
2340 h_flex()
2341 .justify_end()
2342 .flex_none()
2343 .w(gutter_dimensions.width
2344 - (gutter_dimensions.left_padding + gutter_dimensions.margin))
2345 .h_full()
2346 .child(
2347 ButtonLike::new("expand-icon")
2348 .style(ButtonStyle::Transparent)
2349 .child(
2350 svg()
2351 .path(IconName::ArrowDownFromLine.path())
2352 .size(IconSize::XSmall.rems())
2353 .text_color(cx.theme().colors().editor_line_number)
2354 .group("")
2355 .hover(|style| {
2356 style.text_color(
2357 cx.theme().colors().editor_active_line_number,
2358 )
2359 }),
2360 )
2361 .on_click(cx.listener_for(&self.editor, {
2362 let id = *id;
2363 move |editor, _, cx| {
2364 editor.expand_excerpt(
2365 id,
2366 multi_buffer::ExpandExcerptDirection::Down,
2367 cx,
2368 );
2369 }
2370 }))
2371 .tooltip({
2372 move |cx| {
2373 Tooltip::for_action(
2374 "Expand Excerpt",
2375 &ExpandExcerpts { lines: 0 },
2376 cx,
2377 )
2378 }
2379 }),
2380 ),
2381 );
2382 element.into_any()
2383 }
2384 };
2385
2386 // Discover the element's content height, then round up to the nearest multiple of line height.
2387 let preliminary_size =
2388 element.layout_as_root(size(available_width, AvailableSpace::MinContent), cx);
2389 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2390 let final_size = if preliminary_size.height == quantized_height {
2391 preliminary_size
2392 } else {
2393 element.layout_as_root(size(available_width, quantized_height.into()), cx)
2394 };
2395
2396 if let BlockId::Custom(custom_block_id) = block_id {
2397 if block.height() > 0 {
2398 let element_height_in_lines =
2399 ((final_size.height / line_height).ceil() as u32).max(1);
2400 if element_height_in_lines != block.height() {
2401 resized_blocks.insert(custom_block_id, element_height_in_lines);
2402 }
2403 }
2404 }
2405
2406 (element, final_size)
2407 }
2408
2409 #[allow(clippy::too_many_arguments)]
2410 fn render_blocks(
2411 &self,
2412 rows: Range<DisplayRow>,
2413 snapshot: &EditorSnapshot,
2414 hitbox: &Hitbox,
2415 text_hitbox: &Hitbox,
2416 editor_width: Pixels,
2417 scroll_width: &mut Pixels,
2418 gutter_dimensions: &GutterDimensions,
2419 em_width: Pixels,
2420 text_x: Pixels,
2421 line_height: Pixels,
2422 line_layouts: &[LineWithInvisibles],
2423 cx: &mut WindowContext,
2424 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2425 let (fixed_blocks, non_fixed_blocks) = snapshot
2426 .blocks_in_range(rows.clone())
2427 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2428
2429 let mut focused_block = self
2430 .editor
2431 .update(cx, |editor, _| editor.take_focused_block());
2432 let mut fixed_block_max_width = Pixels::ZERO;
2433 let mut blocks = Vec::new();
2434 let mut resized_blocks = HashMap::default();
2435
2436 for (row, block) in fixed_blocks {
2437 let block_id = block.id();
2438
2439 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2440 focused_block = None;
2441 }
2442
2443 let (element, element_size) = self.render_block(
2444 block,
2445 AvailableSpace::MinContent,
2446 block_id,
2447 row,
2448 snapshot,
2449 text_x,
2450 &rows,
2451 line_layouts,
2452 gutter_dimensions,
2453 line_height,
2454 em_width,
2455 text_hitbox,
2456 editor_width,
2457 scroll_width,
2458 &mut resized_blocks,
2459 cx,
2460 );
2461 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2462 blocks.push(BlockLayout {
2463 id: block_id,
2464 row: Some(row),
2465 element,
2466 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
2467 style: BlockStyle::Fixed,
2468 });
2469 }
2470 for (row, block) in non_fixed_blocks {
2471 let style = block.style();
2472 let width = match style {
2473 BlockStyle::Sticky => hitbox.size.width,
2474 BlockStyle::Flex => hitbox
2475 .size
2476 .width
2477 .max(fixed_block_max_width)
2478 .max(gutter_dimensions.width + *scroll_width),
2479 BlockStyle::Fixed => unreachable!(),
2480 };
2481 let block_id = block.id();
2482
2483 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2484 focused_block = None;
2485 }
2486
2487 let (element, element_size) = self.render_block(
2488 block,
2489 width.into(),
2490 block_id,
2491 row,
2492 snapshot,
2493 text_x,
2494 &rows,
2495 line_layouts,
2496 gutter_dimensions,
2497 line_height,
2498 em_width,
2499 text_hitbox,
2500 editor_width,
2501 scroll_width,
2502 &mut resized_blocks,
2503 cx,
2504 );
2505
2506 blocks.push(BlockLayout {
2507 id: block_id,
2508 row: Some(row),
2509 element,
2510 available_space: size(width.into(), element_size.height.into()),
2511 style,
2512 });
2513 }
2514
2515 if let Some(focused_block) = focused_block {
2516 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2517 if focus_handle.is_focused(cx) {
2518 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2519 let style = block.style();
2520 let width = match style {
2521 BlockStyle::Fixed => AvailableSpace::MinContent,
2522 BlockStyle::Flex => AvailableSpace::Definite(
2523 hitbox
2524 .size
2525 .width
2526 .max(fixed_block_max_width)
2527 .max(gutter_dimensions.width + *scroll_width),
2528 ),
2529 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2530 };
2531
2532 let (element, element_size) = self.render_block(
2533 &block,
2534 width,
2535 focused_block.id,
2536 rows.end,
2537 snapshot,
2538 text_x,
2539 &rows,
2540 line_layouts,
2541 gutter_dimensions,
2542 line_height,
2543 em_width,
2544 text_hitbox,
2545 editor_width,
2546 scroll_width,
2547 &mut resized_blocks,
2548 cx,
2549 );
2550
2551 blocks.push(BlockLayout {
2552 id: block.id(),
2553 row: None,
2554 element,
2555 available_space: size(width, element_size.height.into()),
2556 style,
2557 });
2558 }
2559 }
2560 }
2561 }
2562
2563 if resized_blocks.is_empty() {
2564 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2565 Ok(blocks)
2566 } else {
2567 Err(resized_blocks)
2568 }
2569 }
2570
2571 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
2572 /// a restart of rendering for the editor based on the new sizes.
2573 fn layout_blocks(
2574 &self,
2575 blocks: &mut Vec<BlockLayout>,
2576 hitbox: &Hitbox,
2577 line_height: Pixels,
2578 scroll_pixel_position: gpui::Point<Pixels>,
2579 cx: &mut WindowContext,
2580 ) {
2581 for block in blocks {
2582 let mut origin = if let Some(row) = block.row {
2583 hitbox.origin
2584 + point(
2585 Pixels::ZERO,
2586 row.as_f32() * line_height - scroll_pixel_position.y,
2587 )
2588 } else {
2589 // Position the block outside the visible area
2590 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2591 };
2592
2593 if !matches!(block.style, BlockStyle::Sticky) {
2594 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2595 }
2596
2597 let focus_handle = block
2598 .element
2599 .prepaint_as_root(origin, block.available_space, cx);
2600
2601 if let Some(focus_handle) = focus_handle {
2602 self.editor.update(cx, |editor, _cx| {
2603 editor.set_focused_block(FocusedBlock {
2604 id: block.id,
2605 focus_handle: focus_handle.downgrade(),
2606 });
2607 });
2608 }
2609 }
2610 }
2611
2612 #[allow(clippy::too_many_arguments)]
2613 fn layout_context_menu(
2614 &self,
2615 line_height: Pixels,
2616 hitbox: &Hitbox,
2617 text_hitbox: &Hitbox,
2618 content_origin: gpui::Point<Pixels>,
2619 start_row: DisplayRow,
2620 scroll_pixel_position: gpui::Point<Pixels>,
2621 line_layouts: &[LineWithInvisibles],
2622 newest_selection_head: DisplayPoint,
2623 gutter_overshoot: Pixels,
2624 cx: &mut WindowContext,
2625 ) -> bool {
2626 let max_height = cmp::min(
2627 12. * line_height,
2628 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
2629 );
2630 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
2631 if editor.context_menu_visible() {
2632 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
2633 } else {
2634 None
2635 }
2636 }) else {
2637 return false;
2638 };
2639
2640 let context_menu_size = context_menu.layout_as_root(AvailableSpace::min_size(), cx);
2641
2642 let (x, y) = match position {
2643 crate::ContextMenuOrigin::EditorPoint(point) => {
2644 let cursor_row_layout = &line_layouts[point.row().minus(start_row) as usize];
2645 let x = cursor_row_layout.x_for_index(point.column() as usize)
2646 - scroll_pixel_position.x;
2647 let y = point.row().next_row().as_f32() * line_height - scroll_pixel_position.y;
2648 (x, y)
2649 }
2650 crate::ContextMenuOrigin::GutterIndicator(row) => {
2651 // 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
2652 // text field.
2653 let x = -gutter_overshoot;
2654 let y = row.next_row().as_f32() * line_height - scroll_pixel_position.y;
2655 (x, y)
2656 }
2657 };
2658
2659 let mut list_origin = content_origin + point(x, y);
2660 let list_width = context_menu_size.width;
2661 let list_height = context_menu_size.height;
2662
2663 // Snap the right edge of the list to the right edge of the window if
2664 // its horizontal bounds overflow.
2665 if list_origin.x + list_width > cx.viewport_size().width {
2666 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
2667 }
2668
2669 if list_origin.y + list_height > text_hitbox.lower_right().y {
2670 list_origin.y -= line_height + list_height;
2671 }
2672
2673 cx.defer_draw(context_menu, list_origin, 1);
2674 true
2675 }
2676
2677 fn layout_mouse_context_menu(
2678 &self,
2679 editor_snapshot: &EditorSnapshot,
2680 visible_range: Range<DisplayRow>,
2681 cx: &mut WindowContext,
2682 ) -> Option<AnyElement> {
2683 let position = self.editor.update(cx, |editor, cx| {
2684 let visible_start_point = editor.display_to_pixel_point(
2685 DisplayPoint::new(visible_range.start, 0),
2686 editor_snapshot,
2687 cx,
2688 )?;
2689 let visible_end_point = editor.display_to_pixel_point(
2690 DisplayPoint::new(visible_range.end, 0),
2691 editor_snapshot,
2692 cx,
2693 )?;
2694
2695 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2696 let (source_display_point, position) = match mouse_context_menu.position {
2697 MenuPosition::PinnedToScreen(point) => (None, point),
2698 MenuPosition::PinnedToEditor {
2699 source,
2700 offset_x,
2701 offset_y,
2702 } => {
2703 let source_display_point = source.to_display_point(editor_snapshot);
2704 let mut source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
2705 source_point.x += offset_x;
2706 source_point.y += offset_y;
2707 (Some(source_display_point), source_point)
2708 }
2709 };
2710
2711 let source_included = source_display_point.map_or(true, |source_display_point| {
2712 visible_range
2713 .to_inclusive()
2714 .contains(&source_display_point.row())
2715 });
2716 let position_included =
2717 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
2718 if !source_included && !position_included {
2719 None
2720 } else {
2721 Some(position)
2722 }
2723 })?;
2724
2725 let mut element = self.editor.update(cx, |editor, _| {
2726 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2727 let context_menu = mouse_context_menu.context_menu.clone();
2728
2729 Some(
2730 deferred(
2731 anchored()
2732 .position(position)
2733 .child(context_menu)
2734 .anchor(AnchorCorner::TopLeft)
2735 .snap_to_window_with_margin(px(8.)),
2736 )
2737 .with_priority(1)
2738 .into_any(),
2739 )
2740 })?;
2741
2742 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
2743 Some(element)
2744 }
2745
2746 #[allow(clippy::too_many_arguments)]
2747 fn layout_hover_popovers(
2748 &self,
2749 snapshot: &EditorSnapshot,
2750 hitbox: &Hitbox,
2751 text_hitbox: &Hitbox,
2752 visible_display_row_range: Range<DisplayRow>,
2753 content_origin: gpui::Point<Pixels>,
2754 scroll_pixel_position: gpui::Point<Pixels>,
2755 line_layouts: &[LineWithInvisibles],
2756 line_height: Pixels,
2757 em_width: Pixels,
2758 cx: &mut WindowContext,
2759 ) {
2760 struct MeasuredHoverPopover {
2761 element: AnyElement,
2762 size: Size<Pixels>,
2763 horizontal_offset: Pixels,
2764 }
2765
2766 let max_size = size(
2767 (120. * em_width) // Default size
2768 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2769 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2770 (16. * line_height) // Default size
2771 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2772 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2773 );
2774
2775 let hover_popovers = self.editor.update(cx, |editor, cx| {
2776 editor
2777 .hover_state
2778 .render(snapshot, visible_display_row_range.clone(), max_size, cx)
2779 });
2780 let Some((position, hover_popovers)) = hover_popovers else {
2781 return;
2782 };
2783
2784 // This is safe because we check on layout whether the required row is available
2785 let hovered_row_layout =
2786 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
2787
2788 // Compute Hovered Point
2789 let x =
2790 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
2791 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
2792 let hovered_point = content_origin + point(x, y);
2793
2794 let mut overall_height = Pixels::ZERO;
2795 let mut measured_hover_popovers = Vec::new();
2796 for mut hover_popover in hover_popovers {
2797 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
2798 let horizontal_offset =
2799 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
2800
2801 overall_height += HOVER_POPOVER_GAP + size.height;
2802
2803 measured_hover_popovers.push(MeasuredHoverPopover {
2804 element: hover_popover,
2805 size,
2806 horizontal_offset,
2807 });
2808 }
2809 overall_height += HOVER_POPOVER_GAP;
2810
2811 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
2812 let mut occlusion = div()
2813 .size_full()
2814 .occlude()
2815 .on_mouse_move(|_, cx| cx.stop_propagation())
2816 .into_any_element();
2817 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
2818 cx.defer_draw(occlusion, origin, 2);
2819 }
2820
2821 if hovered_point.y > overall_height {
2822 // There is enough space above. Render popovers above the hovered point
2823 let mut current_y = hovered_point.y;
2824 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2825 let size = popover.size;
2826 let popover_origin = point(
2827 hovered_point.x + popover.horizontal_offset,
2828 current_y - size.height,
2829 );
2830
2831 cx.defer_draw(popover.element, popover_origin, 2);
2832 if position != itertools::Position::Last {
2833 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
2834 draw_occluder(size.width, origin, cx);
2835 }
2836
2837 current_y = popover_origin.y - HOVER_POPOVER_GAP;
2838 }
2839 } else {
2840 // There is not enough space above. Render popovers below the hovered point
2841 let mut current_y = hovered_point.y + line_height;
2842 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2843 let size = popover.size;
2844 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
2845
2846 cx.defer_draw(popover.element, popover_origin, 2);
2847 if position != itertools::Position::Last {
2848 let origin = point(popover_origin.x, popover_origin.y + size.height);
2849 draw_occluder(size.width, origin, cx);
2850 }
2851
2852 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
2853 }
2854 }
2855 }
2856
2857 #[allow(clippy::too_many_arguments)]
2858 fn layout_signature_help(
2859 &self,
2860 hitbox: &Hitbox,
2861 content_origin: gpui::Point<Pixels>,
2862 scroll_pixel_position: gpui::Point<Pixels>,
2863 newest_selection_head: Option<DisplayPoint>,
2864 start_row: DisplayRow,
2865 line_layouts: &[LineWithInvisibles],
2866 line_height: Pixels,
2867 em_width: Pixels,
2868 cx: &mut WindowContext,
2869 ) {
2870 if !self.editor.focus_handle(cx).is_focused(cx) {
2871 return;
2872 }
2873 let Some(newest_selection_head) = newest_selection_head else {
2874 return;
2875 };
2876 let selection_row = newest_selection_head.row();
2877 if selection_row < start_row {
2878 return;
2879 }
2880 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
2881 else {
2882 return;
2883 };
2884
2885 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
2886 - scroll_pixel_position.x
2887 + content_origin.x;
2888 let start_y =
2889 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
2890
2891 let max_size = size(
2892 (120. * em_width) // Default size
2893 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2894 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2895 (16. * line_height) // Default size
2896 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2897 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2898 );
2899
2900 let maybe_element = self.editor.update(cx, |editor, cx| {
2901 if let Some(popover) = editor.signature_help_state.popover_mut() {
2902 let element = popover.render(
2903 &self.style,
2904 max_size,
2905 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2906 cx,
2907 );
2908 Some(element)
2909 } else {
2910 None
2911 }
2912 });
2913 if let Some(mut element) = maybe_element {
2914 let window_size = cx.viewport_size();
2915 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
2916 let mut point = point(start_x, start_y - size.height);
2917
2918 // Adjusting to ensure the popover does not overflow in the X-axis direction.
2919 if point.x + size.width >= window_size.width {
2920 point.x = window_size.width - size.width;
2921 }
2922
2923 cx.defer_draw(element, point, 1)
2924 }
2925 }
2926
2927 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
2928 cx.paint_layer(layout.hitbox.bounds, |cx| {
2929 let scroll_top = layout.position_map.snapshot.scroll_position().y;
2930 let gutter_bg = cx.theme().colors().editor_gutter_background;
2931 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
2932 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
2933
2934 if let EditorMode::Full = layout.mode {
2935 let mut active_rows = layout.active_rows.iter().peekable();
2936 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
2937 let mut end_row = start_row.0;
2938 while active_rows
2939 .peek()
2940 .map_or(false, |(active_row, has_selection)| {
2941 active_row.0 == end_row + 1
2942 && *has_selection == contains_non_empty_selection
2943 })
2944 {
2945 active_rows.next().unwrap();
2946 end_row += 1;
2947 }
2948
2949 if !contains_non_empty_selection {
2950 let highlight_h_range =
2951 match layout.position_map.snapshot.current_line_highlight {
2952 CurrentLineHighlight::Gutter => Some(Range {
2953 start: layout.hitbox.left(),
2954 end: layout.gutter_hitbox.right(),
2955 }),
2956 CurrentLineHighlight::Line => Some(Range {
2957 start: layout.text_hitbox.bounds.left(),
2958 end: layout.text_hitbox.bounds.right(),
2959 }),
2960 CurrentLineHighlight::All => Some(Range {
2961 start: layout.hitbox.left(),
2962 end: layout.hitbox.right(),
2963 }),
2964 CurrentLineHighlight::None => None,
2965 };
2966 if let Some(range) = highlight_h_range {
2967 let active_line_bg = cx.theme().colors().editor_active_line_background;
2968 let bounds = Bounds {
2969 origin: point(
2970 range.start,
2971 layout.hitbox.origin.y
2972 + (start_row.as_f32() - scroll_top)
2973 * layout.position_map.line_height,
2974 ),
2975 size: size(
2976 range.end - range.start,
2977 layout.position_map.line_height
2978 * (end_row - start_row.0 + 1) as f32,
2979 ),
2980 };
2981 cx.paint_quad(fill(bounds, active_line_bg));
2982 }
2983 }
2984 }
2985
2986 let mut paint_highlight =
2987 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
2988 let origin = point(
2989 layout.hitbox.origin.x,
2990 layout.hitbox.origin.y
2991 + (highlight_row_start.as_f32() - scroll_top)
2992 * layout.position_map.line_height,
2993 );
2994 let size = size(
2995 layout.hitbox.size.width,
2996 layout.position_map.line_height
2997 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
2998 );
2999 cx.paint_quad(fill(Bounds { origin, size }, color));
3000 };
3001
3002 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
3003 for (&new_row, &new_color) in &layout.highlighted_rows {
3004 match &mut current_paint {
3005 Some((current_color, current_range)) => {
3006 let current_color = *current_color;
3007 let new_range_started = current_color != new_color
3008 || current_range.end.next_row() != new_row;
3009 if new_range_started {
3010 paint_highlight(
3011 current_range.start,
3012 current_range.end,
3013 current_color,
3014 );
3015 current_paint = Some((new_color, new_row..new_row));
3016 continue;
3017 } else {
3018 current_range.end = current_range.end.next_row();
3019 }
3020 }
3021 None => current_paint = Some((new_color, new_row..new_row)),
3022 };
3023 }
3024 if let Some((color, range)) = current_paint {
3025 paint_highlight(range.start, range.end, color);
3026 }
3027
3028 let scroll_left =
3029 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
3030
3031 for (wrap_position, active) in layout.wrap_guides.iter() {
3032 let x = (layout.text_hitbox.origin.x
3033 + *wrap_position
3034 + layout.position_map.em_width / 2.)
3035 - scroll_left;
3036
3037 let show_scrollbars = layout
3038 .scrollbar_layout
3039 .as_ref()
3040 .map_or(false, |scrollbar| scrollbar.visible);
3041 if x < layout.text_hitbox.origin.x
3042 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
3043 {
3044 continue;
3045 }
3046
3047 let color = if *active {
3048 cx.theme().colors().editor_active_wrap_guide
3049 } else {
3050 cx.theme().colors().editor_wrap_guide
3051 };
3052 cx.paint_quad(fill(
3053 Bounds {
3054 origin: point(x, layout.text_hitbox.origin.y),
3055 size: size(px(1.), layout.text_hitbox.size.height),
3056 },
3057 color,
3058 ));
3059 }
3060 }
3061 })
3062 }
3063
3064 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3065 let Some(indent_guides) = &layout.indent_guides else {
3066 return;
3067 };
3068
3069 let faded_color = |color: Hsla, alpha: f32| {
3070 let mut faded = color;
3071 faded.a = alpha;
3072 faded
3073 };
3074
3075 for indent_guide in indent_guides {
3076 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3077 let settings = indent_guide.settings;
3078
3079 // TODO fixed for now, expose them through themes later
3080 const INDENT_AWARE_ALPHA: f32 = 0.2;
3081 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3082 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3083 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3084
3085 let line_color = match (settings.coloring, indent_guide.active) {
3086 (IndentGuideColoring::Disabled, _) => None,
3087 (IndentGuideColoring::Fixed, false) => {
3088 Some(cx.theme().colors().editor_indent_guide)
3089 }
3090 (IndentGuideColoring::Fixed, true) => {
3091 Some(cx.theme().colors().editor_indent_guide_active)
3092 }
3093 (IndentGuideColoring::IndentAware, false) => {
3094 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3095 }
3096 (IndentGuideColoring::IndentAware, true) => {
3097 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3098 }
3099 };
3100
3101 let background_color = match (settings.background_coloring, indent_guide.active) {
3102 (IndentGuideBackgroundColoring::Disabled, _) => None,
3103 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3104 indent_accent_colors,
3105 INDENT_AWARE_BACKGROUND_ALPHA,
3106 )),
3107 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3108 indent_accent_colors,
3109 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3110 )),
3111 };
3112
3113 let requested_line_width = if indent_guide.active {
3114 settings.active_line_width
3115 } else {
3116 settings.line_width
3117 }
3118 .clamp(1, 10);
3119 let mut line_indicator_width = 0.;
3120 if let Some(color) = line_color {
3121 cx.paint_quad(fill(
3122 Bounds {
3123 origin: indent_guide.origin,
3124 size: size(px(requested_line_width as f32), indent_guide.length),
3125 },
3126 color,
3127 ));
3128 line_indicator_width = requested_line_width as f32;
3129 }
3130
3131 if let Some(color) = background_color {
3132 let width = indent_guide.single_indent_width - px(line_indicator_width);
3133 cx.paint_quad(fill(
3134 Bounds {
3135 origin: point(
3136 indent_guide.origin.x + px(line_indicator_width),
3137 indent_guide.origin.y,
3138 ),
3139 size: size(width, indent_guide.length),
3140 },
3141 color,
3142 ));
3143 }
3144 }
3145 }
3146
3147 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3148 let line_height = layout.position_map.line_height;
3149 let scroll_position = layout.position_map.snapshot.scroll_position();
3150 let scroll_top = scroll_position.y * line_height;
3151
3152 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3153
3154 for (ix, line) in layout.line_numbers.iter().enumerate() {
3155 if let Some(line) = line {
3156 let line_origin = layout.gutter_hitbox.origin
3157 + point(
3158 layout.gutter_hitbox.size.width
3159 - line.width
3160 - layout.gutter_dimensions.right_padding,
3161 ix as f32 * line_height - (scroll_top % line_height),
3162 );
3163
3164 line.paint(line_origin, line_height, cx).log_err();
3165 }
3166 }
3167 }
3168
3169 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
3170 if layout.display_hunks.is_empty() {
3171 return;
3172 }
3173
3174 let line_height = layout.position_map.line_height;
3175 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3176 for (hunk, hitbox) in &layout.display_hunks {
3177 let hunk_to_paint = match hunk {
3178 DisplayDiffHunk::Folded { .. } => {
3179 let hunk_bounds = Self::diff_hunk_bounds(
3180 &layout.position_map.snapshot,
3181 line_height,
3182 layout.gutter_hitbox.bounds,
3183 hunk,
3184 );
3185 Some((
3186 hunk_bounds,
3187 cx.theme().status().modified,
3188 Corners::all(1. * line_height),
3189 ))
3190 }
3191 DisplayDiffHunk::Unfolded { status, .. } => {
3192 hitbox.as_ref().map(|hunk_hitbox| match status {
3193 DiffHunkStatus::Added => (
3194 hunk_hitbox.bounds,
3195 cx.theme().status().created,
3196 Corners::all(0.05 * line_height),
3197 ),
3198 DiffHunkStatus::Modified => (
3199 hunk_hitbox.bounds,
3200 cx.theme().status().modified,
3201 Corners::all(0.05 * line_height),
3202 ),
3203 DiffHunkStatus::Removed => (
3204 Bounds::new(
3205 point(
3206 hunk_hitbox.origin.x - hunk_hitbox.size.width,
3207 hunk_hitbox.origin.y,
3208 ),
3209 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
3210 ),
3211 cx.theme().status().deleted,
3212 Corners::all(1. * line_height),
3213 ),
3214 })
3215 }
3216 };
3217
3218 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
3219 cx.paint_quad(quad(
3220 hunk_bounds,
3221 corner_radii,
3222 background_color,
3223 Edges::default(),
3224 transparent_black(),
3225 ));
3226 }
3227 }
3228 });
3229 }
3230
3231 pub(super) fn diff_hunk_bounds(
3232 snapshot: &EditorSnapshot,
3233 line_height: Pixels,
3234 gutter_bounds: Bounds<Pixels>,
3235 hunk: &DisplayDiffHunk,
3236 ) -> Bounds<Pixels> {
3237 let scroll_position = snapshot.scroll_position();
3238 let scroll_top = scroll_position.y * line_height;
3239
3240 match hunk {
3241 DisplayDiffHunk::Folded { display_row, .. } => {
3242 let start_y = display_row.as_f32() * line_height - scroll_top;
3243 let end_y = start_y + line_height;
3244
3245 let width = 0.275 * line_height;
3246 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3247 let highlight_size = size(width, end_y - start_y);
3248 Bounds::new(highlight_origin, highlight_size)
3249 }
3250 DisplayDiffHunk::Unfolded {
3251 display_row_range,
3252 status,
3253 ..
3254 } => match status {
3255 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
3256 let start_row = display_row_range.start;
3257 let end_row = display_row_range.end;
3258 // If we're in a multibuffer, row range span might include an
3259 // excerpt header, so if we were to draw the marker straight away,
3260 // the hunk might include the rows of that header.
3261 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
3262 // Instead, we simply check whether the range we're dealing with includes
3263 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
3264 let end_row_in_current_excerpt = snapshot
3265 .blocks_in_range(start_row..end_row)
3266 .find_map(|(start_row, block)| {
3267 if matches!(block, Block::ExcerptHeader { .. }) {
3268 Some(start_row)
3269 } else {
3270 None
3271 }
3272 })
3273 .unwrap_or(end_row);
3274
3275 let start_y = start_row.as_f32() * line_height - scroll_top;
3276 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
3277
3278 let width = 0.275 * line_height;
3279 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3280 let highlight_size = size(width, end_y - start_y);
3281 Bounds::new(highlight_origin, highlight_size)
3282 }
3283 DiffHunkStatus::Removed => {
3284 let row = display_row_range.start;
3285
3286 let offset = line_height / 2.;
3287 let start_y = row.as_f32() * line_height - offset - scroll_top;
3288 let end_y = start_y + line_height;
3289
3290 let width = 0.35 * line_height;
3291 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3292 let highlight_size = size(width, end_y - start_y);
3293 Bounds::new(highlight_origin, highlight_size)
3294 }
3295 },
3296 }
3297 }
3298
3299 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3300 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3301 cx.with_element_namespace("gutter_fold_toggles", |cx| {
3302 for fold_indicator in layout.gutter_fold_toggles.iter_mut().flatten() {
3303 fold_indicator.paint(cx);
3304 }
3305 });
3306
3307 for test_indicator in layout.test_indicators.iter_mut() {
3308 test_indicator.paint(cx);
3309 }
3310 for close_indicator in layout.close_indicators.iter_mut() {
3311 close_indicator.paint(cx);
3312 }
3313
3314 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
3315 indicator.paint(cx);
3316 }
3317 });
3318 }
3319
3320 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3321 for (_, hunk_hitbox) in &layout.display_hunks {
3322 if let Some(hunk_hitbox) = hunk_hitbox {
3323 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
3324 }
3325 }
3326
3327 let show_git_gutter = layout
3328 .position_map
3329 .snapshot
3330 .show_git_diff_gutter
3331 .unwrap_or_else(|| {
3332 matches!(
3333 ProjectSettings::get_global(cx).git.git_gutter,
3334 Some(GitGutterSetting::TrackedFiles)
3335 )
3336 });
3337 if show_git_gutter {
3338 Self::paint_diff_hunks(layout, cx)
3339 }
3340
3341 let highlight_width = 0.275 * layout.position_map.line_height;
3342 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
3343 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3344 for (range, color) in &layout.highlighted_gutter_ranges {
3345 let start_row = if range.start.row() < layout.visible_display_row_range.start {
3346 layout.visible_display_row_range.start - DisplayRow(1)
3347 } else {
3348 range.start.row()
3349 };
3350 let end_row = if range.end.row() > layout.visible_display_row_range.end {
3351 layout.visible_display_row_range.end + DisplayRow(1)
3352 } else {
3353 range.end.row()
3354 };
3355
3356 let start_y = layout.gutter_hitbox.top()
3357 + start_row.0 as f32 * layout.position_map.line_height
3358 - layout.position_map.scroll_pixel_position.y;
3359 let end_y = layout.gutter_hitbox.top()
3360 + (end_row.0 + 1) as f32 * layout.position_map.line_height
3361 - layout.position_map.scroll_pixel_position.y;
3362 let bounds = Bounds::from_corners(
3363 point(layout.gutter_hitbox.left(), start_y),
3364 point(layout.gutter_hitbox.left() + highlight_width, end_y),
3365 );
3366 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
3367 }
3368 });
3369 }
3370
3371 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3372 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
3373 return;
3374 };
3375
3376 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3377 for mut blame_element in blamed_display_rows.into_iter() {
3378 blame_element.paint(cx);
3379 }
3380 })
3381 }
3382
3383 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3384 cx.with_content_mask(
3385 Some(ContentMask {
3386 bounds: layout.text_hitbox.bounds,
3387 }),
3388 |cx| {
3389 let cursor_style = if self
3390 .editor
3391 .read(cx)
3392 .hovered_link_state
3393 .as_ref()
3394 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
3395 {
3396 CursorStyle::PointingHand
3397 } else {
3398 CursorStyle::IBeam
3399 };
3400 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
3401
3402 let invisible_display_ranges = self.paint_highlights(layout, cx);
3403 self.paint_lines(&invisible_display_ranges, layout, cx);
3404 self.paint_redactions(layout, cx);
3405 self.paint_cursors(layout, cx);
3406 self.paint_inline_blame(layout, cx);
3407 cx.with_element_namespace("crease_trailers", |cx| {
3408 for trailer in layout.crease_trailers.iter_mut().flatten() {
3409 trailer.element.paint(cx);
3410 }
3411 });
3412 },
3413 )
3414 }
3415
3416 fn paint_highlights(
3417 &mut self,
3418 layout: &mut EditorLayout,
3419 cx: &mut WindowContext,
3420 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
3421 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3422 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
3423 let line_end_overshoot = 0.15 * layout.position_map.line_height;
3424 for (range, color) in &layout.highlighted_ranges {
3425 self.paint_highlighted_range(
3426 range.clone(),
3427 *color,
3428 Pixels::ZERO,
3429 line_end_overshoot,
3430 layout,
3431 cx,
3432 );
3433 }
3434
3435 let corner_radius = 0.15 * layout.position_map.line_height;
3436
3437 for (player_color, selections) in &layout.selections {
3438 for selection in selections.iter() {
3439 self.paint_highlighted_range(
3440 selection.range.clone(),
3441 player_color.selection,
3442 corner_radius,
3443 corner_radius * 2.,
3444 layout,
3445 cx,
3446 );
3447
3448 if selection.is_local && !selection.range.is_empty() {
3449 invisible_display_ranges.push(selection.range.clone());
3450 }
3451 }
3452 }
3453 invisible_display_ranges
3454 })
3455 }
3456
3457 fn paint_lines(
3458 &mut self,
3459 invisible_display_ranges: &[Range<DisplayPoint>],
3460 layout: &mut EditorLayout,
3461 cx: &mut WindowContext,
3462 ) {
3463 let whitespace_setting = self
3464 .editor
3465 .read(cx)
3466 .buffer
3467 .read(cx)
3468 .settings_at(0, cx)
3469 .show_whitespaces;
3470
3471 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
3472 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
3473 line_with_invisibles.draw(
3474 layout,
3475 row,
3476 layout.content_origin,
3477 whitespace_setting,
3478 invisible_display_ranges,
3479 cx,
3480 )
3481 }
3482
3483 for line_element in &mut layout.line_elements {
3484 line_element.paint(cx);
3485 }
3486 }
3487
3488 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3489 if layout.redacted_ranges.is_empty() {
3490 return;
3491 }
3492
3493 let line_end_overshoot = layout.line_end_overshoot();
3494
3495 // A softer than perfect black
3496 let redaction_color = gpui::rgb(0x0e1111);
3497
3498 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3499 for range in layout.redacted_ranges.iter() {
3500 self.paint_highlighted_range(
3501 range.clone(),
3502 redaction_color.into(),
3503 Pixels::ZERO,
3504 line_end_overshoot,
3505 layout,
3506 cx,
3507 );
3508 }
3509 });
3510 }
3511
3512 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3513 for cursor in &mut layout.visible_cursors {
3514 cursor.paint(layout.content_origin, cx);
3515 }
3516 }
3517
3518 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3519 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
3520 return;
3521 };
3522
3523 let thumb_bounds = scrollbar_layout.thumb_bounds();
3524 if scrollbar_layout.visible {
3525 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
3526 cx.paint_quad(quad(
3527 scrollbar_layout.hitbox.bounds,
3528 Corners::default(),
3529 cx.theme().colors().scrollbar_track_background,
3530 Edges {
3531 top: Pixels::ZERO,
3532 right: Pixels::ZERO,
3533 bottom: Pixels::ZERO,
3534 left: ScrollbarLayout::BORDER_WIDTH,
3535 },
3536 cx.theme().colors().scrollbar_track_border,
3537 ));
3538
3539 let fast_markers =
3540 self.collect_fast_scrollbar_markers(layout, scrollbar_layout, cx);
3541 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
3542 self.refresh_slow_scrollbar_markers(layout, scrollbar_layout, cx);
3543
3544 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
3545 for marker in markers.iter().chain(&fast_markers) {
3546 let mut marker = marker.clone();
3547 marker.bounds.origin += scrollbar_layout.hitbox.origin;
3548 cx.paint_quad(marker);
3549 }
3550
3551 cx.paint_quad(quad(
3552 thumb_bounds,
3553 Corners::default(),
3554 cx.theme().colors().scrollbar_thumb_background,
3555 Edges {
3556 top: Pixels::ZERO,
3557 right: Pixels::ZERO,
3558 bottom: Pixels::ZERO,
3559 left: ScrollbarLayout::BORDER_WIDTH,
3560 },
3561 cx.theme().colors().scrollbar_thumb_border,
3562 ));
3563 });
3564 }
3565
3566 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
3567
3568 let row_height = scrollbar_layout.row_height;
3569 let row_range = scrollbar_layout.visible_row_range.clone();
3570
3571 cx.on_mouse_event({
3572 let editor = self.editor.clone();
3573 let hitbox = scrollbar_layout.hitbox.clone();
3574 let mut mouse_position = cx.mouse_position();
3575 move |event: &MouseMoveEvent, phase, cx| {
3576 if phase == DispatchPhase::Capture {
3577 return;
3578 }
3579
3580 editor.update(cx, |editor, cx| {
3581 if event.pressed_button == Some(MouseButton::Left)
3582 && editor.scroll_manager.is_dragging_scrollbar()
3583 {
3584 let y = mouse_position.y;
3585 let new_y = event.position.y;
3586 if (hitbox.top()..hitbox.bottom()).contains(&y) {
3587 let mut position = editor.scroll_position(cx);
3588 position.y += (new_y - y) / row_height;
3589 if position.y < 0.0 {
3590 position.y = 0.0;
3591 }
3592 editor.set_scroll_position(position, cx);
3593 }
3594
3595 cx.stop_propagation();
3596 } else {
3597 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3598 if hitbox.is_hovered(cx) {
3599 editor.scroll_manager.show_scrollbar(cx);
3600 }
3601 }
3602 mouse_position = event.position;
3603 })
3604 }
3605 });
3606
3607 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
3608 cx.on_mouse_event({
3609 let editor = self.editor.clone();
3610 move |_: &MouseUpEvent, phase, cx| {
3611 if phase == DispatchPhase::Capture {
3612 return;
3613 }
3614
3615 editor.update(cx, |editor, cx| {
3616 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3617 cx.stop_propagation();
3618 });
3619 }
3620 });
3621 } else {
3622 cx.on_mouse_event({
3623 let editor = self.editor.clone();
3624 let hitbox = scrollbar_layout.hitbox.clone();
3625 move |event: &MouseDownEvent, phase, cx| {
3626 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
3627 return;
3628 }
3629
3630 editor.update(cx, |editor, cx| {
3631 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
3632
3633 let y = event.position.y;
3634 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
3635 let center_row = ((y - hitbox.top()) / row_height).round() as u32;
3636 let top_row = center_row
3637 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
3638 let mut position = editor.scroll_position(cx);
3639 position.y = top_row as f32;
3640 editor.set_scroll_position(position, cx);
3641 } else {
3642 editor.scroll_manager.show_scrollbar(cx);
3643 }
3644
3645 cx.stop_propagation();
3646 });
3647 }
3648 });
3649 }
3650 }
3651
3652 fn collect_fast_scrollbar_markers(
3653 &self,
3654 layout: &EditorLayout,
3655 scrollbar_layout: &ScrollbarLayout,
3656 cx: &mut WindowContext,
3657 ) -> Vec<PaintQuad> {
3658 const LIMIT: usize = 100;
3659 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
3660 return vec![];
3661 }
3662 let cursor_ranges = layout
3663 .cursors
3664 .iter()
3665 .map(|(point, color)| ColoredRange {
3666 start: point.row(),
3667 end: point.row(),
3668 color: *color,
3669 })
3670 .collect_vec();
3671 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
3672 }
3673
3674 fn refresh_slow_scrollbar_markers(
3675 &self,
3676 layout: &EditorLayout,
3677 scrollbar_layout: &ScrollbarLayout,
3678 cx: &mut WindowContext,
3679 ) {
3680 self.editor.update(cx, |editor, cx| {
3681 if !editor.is_singleton(cx)
3682 || !editor
3683 .scrollbar_marker_state
3684 .should_refresh(scrollbar_layout.hitbox.size)
3685 {
3686 return;
3687 }
3688
3689 let scrollbar_layout = scrollbar_layout.clone();
3690 let background_highlights = editor.background_highlights.clone();
3691 let snapshot = layout.position_map.snapshot.clone();
3692 let theme = cx.theme().clone();
3693 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
3694
3695 editor.scrollbar_marker_state.dirty = false;
3696 editor.scrollbar_marker_state.pending_refresh =
3697 Some(cx.spawn(|editor, mut cx| async move {
3698 let scrollbar_size = scrollbar_layout.hitbox.size;
3699 let scrollbar_markers = cx
3700 .background_executor()
3701 .spawn(async move {
3702 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
3703 let mut marker_quads = Vec::new();
3704 if scrollbar_settings.git_diff {
3705 let marker_row_ranges = snapshot
3706 .buffer_snapshot
3707 .git_diff_hunks_in_range(
3708 MultiBufferRow::MIN..MultiBufferRow::MAX,
3709 )
3710 .map(|hunk| {
3711 let start_display_row =
3712 MultiBufferPoint::new(hunk.associated_range.start.0, 0)
3713 .to_display_point(&snapshot.display_snapshot)
3714 .row();
3715 let mut end_display_row =
3716 MultiBufferPoint::new(hunk.associated_range.end.0, 0)
3717 .to_display_point(&snapshot.display_snapshot)
3718 .row();
3719 if end_display_row != start_display_row {
3720 end_display_row.0 -= 1;
3721 }
3722 let color = match hunk_status(&hunk) {
3723 DiffHunkStatus::Added => theme.status().created,
3724 DiffHunkStatus::Modified => theme.status().modified,
3725 DiffHunkStatus::Removed => theme.status().deleted,
3726 };
3727 ColoredRange {
3728 start: start_display_row,
3729 end: end_display_row,
3730 color,
3731 }
3732 });
3733
3734 marker_quads.extend(
3735 scrollbar_layout
3736 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
3737 );
3738 }
3739
3740 for (background_highlight_id, (_, background_ranges)) in
3741 background_highlights.iter()
3742 {
3743 let is_search_highlights = *background_highlight_id
3744 == TypeId::of::<BufferSearchHighlights>();
3745 let is_symbol_occurrences = *background_highlight_id
3746 == TypeId::of::<DocumentHighlightRead>()
3747 || *background_highlight_id
3748 == TypeId::of::<DocumentHighlightWrite>();
3749 if (is_search_highlights && scrollbar_settings.search_results)
3750 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
3751 {
3752 let mut color = theme.status().info;
3753 if is_symbol_occurrences {
3754 color.fade_out(0.5);
3755 }
3756 let marker_row_ranges = background_ranges.iter().map(|range| {
3757 let display_start = range
3758 .start
3759 .to_display_point(&snapshot.display_snapshot);
3760 let display_end =
3761 range.end.to_display_point(&snapshot.display_snapshot);
3762 ColoredRange {
3763 start: display_start.row(),
3764 end: display_end.row(),
3765 color,
3766 }
3767 });
3768 marker_quads.extend(
3769 scrollbar_layout
3770 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
3771 );
3772 }
3773 }
3774
3775 if scrollbar_settings.diagnostics {
3776 let diagnostics = snapshot
3777 .buffer_snapshot
3778 .diagnostics_in_range::<_, Point>(
3779 Point::zero()..max_point,
3780 false,
3781 )
3782 // We want to sort by severity, in order to paint the most severe diagnostics last.
3783 .sorted_by_key(|diagnostic| {
3784 std::cmp::Reverse(diagnostic.diagnostic.severity)
3785 });
3786
3787 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
3788 let start_display = diagnostic
3789 .range
3790 .start
3791 .to_display_point(&snapshot.display_snapshot);
3792 let end_display = diagnostic
3793 .range
3794 .end
3795 .to_display_point(&snapshot.display_snapshot);
3796 let color = match diagnostic.diagnostic.severity {
3797 DiagnosticSeverity::ERROR => theme.status().error,
3798 DiagnosticSeverity::WARNING => theme.status().warning,
3799 DiagnosticSeverity::INFORMATION => theme.status().info,
3800 _ => theme.status().hint,
3801 };
3802 ColoredRange {
3803 start: start_display.row(),
3804 end: end_display.row(),
3805 color,
3806 }
3807 });
3808 marker_quads.extend(
3809 scrollbar_layout
3810 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
3811 );
3812 }
3813
3814 Arc::from(marker_quads)
3815 })
3816 .await;
3817
3818 editor.update(&mut cx, |editor, cx| {
3819 editor.scrollbar_marker_state.markers = scrollbar_markers;
3820 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
3821 editor.scrollbar_marker_state.pending_refresh = None;
3822 cx.notify();
3823 })?;
3824
3825 Ok(())
3826 }));
3827 });
3828 }
3829
3830 #[allow(clippy::too_many_arguments)]
3831 fn paint_highlighted_range(
3832 &self,
3833 range: Range<DisplayPoint>,
3834 color: Hsla,
3835 corner_radius: Pixels,
3836 line_end_overshoot: Pixels,
3837 layout: &EditorLayout,
3838 cx: &mut WindowContext,
3839 ) {
3840 let start_row = layout.visible_display_row_range.start;
3841 let end_row = layout.visible_display_row_range.end;
3842 if range.start != range.end {
3843 let row_range = if range.end.column() == 0 {
3844 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3845 } else {
3846 cmp::max(range.start.row(), start_row)
3847 ..cmp::min(range.end.row().next_row(), end_row)
3848 };
3849
3850 let highlighted_range = HighlightedRange {
3851 color,
3852 line_height: layout.position_map.line_height,
3853 corner_radius,
3854 start_y: layout.content_origin.y
3855 + row_range.start.as_f32() * layout.position_map.line_height
3856 - layout.position_map.scroll_pixel_position.y,
3857 lines: row_range
3858 .iter_rows()
3859 .map(|row| {
3860 let line_layout =
3861 &layout.position_map.line_layouts[row.minus(start_row) as usize];
3862 HighlightedRangeLine {
3863 start_x: if row == range.start.row() {
3864 layout.content_origin.x
3865 + line_layout.x_for_index(range.start.column() as usize)
3866 - layout.position_map.scroll_pixel_position.x
3867 } else {
3868 layout.content_origin.x
3869 - layout.position_map.scroll_pixel_position.x
3870 },
3871 end_x: if row == range.end.row() {
3872 layout.content_origin.x
3873 + line_layout.x_for_index(range.end.column() as usize)
3874 - layout.position_map.scroll_pixel_position.x
3875 } else {
3876 layout.content_origin.x + line_layout.width + line_end_overshoot
3877 - layout.position_map.scroll_pixel_position.x
3878 },
3879 }
3880 })
3881 .collect(),
3882 };
3883
3884 highlighted_range.paint(layout.text_hitbox.bounds, cx);
3885 }
3886 }
3887
3888 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3889 if let Some(mut inline_blame) = layout.inline_blame.take() {
3890 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3891 inline_blame.paint(cx);
3892 })
3893 }
3894 }
3895
3896 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3897 for mut block in layout.blocks.drain(..) {
3898 block.element.paint(cx);
3899 }
3900 }
3901
3902 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3903 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
3904 mouse_context_menu.paint(cx);
3905 }
3906 }
3907
3908 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3909 cx.on_mouse_event({
3910 let position_map = layout.position_map.clone();
3911 let editor = self.editor.clone();
3912 let hitbox = layout.hitbox.clone();
3913 let mut delta = ScrollDelta::default();
3914
3915 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
3916 // accidentally turn off their scrolling.
3917 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
3918
3919 move |event: &ScrollWheelEvent, phase, cx| {
3920 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
3921 delta = delta.coalesce(event.delta);
3922 editor.update(cx, |editor, cx| {
3923 let position_map: &PositionMap = &position_map;
3924
3925 let line_height = position_map.line_height;
3926 let max_glyph_width = position_map.em_width;
3927 let (delta, axis) = match delta {
3928 gpui::ScrollDelta::Pixels(mut pixels) => {
3929 //Trackpad
3930 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
3931 (pixels, axis)
3932 }
3933
3934 gpui::ScrollDelta::Lines(lines) => {
3935 //Not trackpad
3936 let pixels =
3937 point(lines.x * max_glyph_width, lines.y * line_height);
3938 (pixels, None)
3939 }
3940 };
3941
3942 let current_scroll_position = position_map.snapshot.scroll_position();
3943 let x = (current_scroll_position.x * max_glyph_width
3944 - (delta.x * scroll_sensitivity))
3945 / max_glyph_width;
3946 let y = (current_scroll_position.y * line_height
3947 - (delta.y * scroll_sensitivity))
3948 / line_height;
3949 let mut scroll_position =
3950 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
3951 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
3952 if forbid_vertical_scroll {
3953 scroll_position.y = current_scroll_position.y;
3954 }
3955
3956 if scroll_position != current_scroll_position {
3957 editor.scroll(scroll_position, axis, cx);
3958 cx.stop_propagation();
3959 } else if y < 0. {
3960 // Due to clamping, we may fail to detect cases of overscroll to the top;
3961 // We want the scroll manager to get an update in such cases and detect the change of direction
3962 // on the next frame.
3963 cx.notify();
3964 }
3965 });
3966 }
3967 }
3968 });
3969 }
3970
3971 fn paint_mouse_listeners(
3972 &mut self,
3973 layout: &EditorLayout,
3974 hovered_hunk: Option<HoveredHunk>,
3975 cx: &mut WindowContext,
3976 ) {
3977 self.paint_scroll_wheel_listener(layout, cx);
3978
3979 cx.on_mouse_event({
3980 let position_map = layout.position_map.clone();
3981 let editor = self.editor.clone();
3982 let text_hitbox = layout.text_hitbox.clone();
3983 let gutter_hitbox = layout.gutter_hitbox.clone();
3984
3985 move |event: &MouseDownEvent, phase, cx| {
3986 if phase == DispatchPhase::Bubble {
3987 match event.button {
3988 MouseButton::Left => editor.update(cx, |editor, cx| {
3989 Self::mouse_left_down(
3990 editor,
3991 event,
3992 hovered_hunk.clone(),
3993 &position_map,
3994 &text_hitbox,
3995 &gutter_hitbox,
3996 cx,
3997 );
3998 }),
3999 MouseButton::Right => editor.update(cx, |editor, cx| {
4000 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
4001 }),
4002 MouseButton::Middle => editor.update(cx, |editor, cx| {
4003 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
4004 }),
4005 _ => {}
4006 };
4007 }
4008 }
4009 });
4010
4011 cx.on_mouse_event({
4012 let editor = self.editor.clone();
4013 let position_map = layout.position_map.clone();
4014 let text_hitbox = layout.text_hitbox.clone();
4015
4016 move |event: &MouseUpEvent, phase, cx| {
4017 if phase == DispatchPhase::Bubble {
4018 editor.update(cx, |editor, cx| {
4019 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
4020 });
4021 }
4022 }
4023 });
4024 cx.on_mouse_event({
4025 let position_map = layout.position_map.clone();
4026 let editor = self.editor.clone();
4027 let text_hitbox = layout.text_hitbox.clone();
4028 let gutter_hitbox = layout.gutter_hitbox.clone();
4029
4030 move |event: &MouseMoveEvent, phase, cx| {
4031 if phase == DispatchPhase::Bubble {
4032 editor.update(cx, |editor, cx| {
4033 if editor.hover_state.focused(cx) {
4034 return;
4035 }
4036 if event.pressed_button == Some(MouseButton::Left)
4037 || event.pressed_button == Some(MouseButton::Middle)
4038 {
4039 Self::mouse_dragged(
4040 editor,
4041 event,
4042 &position_map,
4043 text_hitbox.bounds,
4044 cx,
4045 )
4046 }
4047
4048 Self::mouse_moved(
4049 editor,
4050 event,
4051 &position_map,
4052 &text_hitbox,
4053 &gutter_hitbox,
4054 cx,
4055 )
4056 });
4057 }
4058 }
4059 });
4060 }
4061
4062 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
4063 bounds.upper_right().x - self.style.scrollbar_width
4064 }
4065
4066 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
4067 let style = &self.style;
4068 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4069 let layout = cx
4070 .text_system()
4071 .shape_line(
4072 SharedString::from(" ".repeat(column)),
4073 font_size,
4074 &[TextRun {
4075 len: column,
4076 font: style.text.font(),
4077 color: Hsla::default(),
4078 background_color: None,
4079 underline: None,
4080 strikethrough: None,
4081 }],
4082 )
4083 .unwrap();
4084
4085 layout.width
4086 }
4087
4088 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
4089 let digit_count = snapshot
4090 .max_buffer_row()
4091 .next_row()
4092 .as_f32()
4093 .log10()
4094 .floor() as usize
4095 + 1;
4096 self.column_pixels(digit_count, cx)
4097 }
4098
4099 #[allow(clippy::too_many_arguments)]
4100 fn layout_hunk_diff_close_indicators(
4101 &self,
4102 line_height: Pixels,
4103 scroll_pixel_position: gpui::Point<Pixels>,
4104 gutter_dimensions: &GutterDimensions,
4105 gutter_hitbox: &Hitbox,
4106 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4107 expanded_hunks_by_rows: HashMap<DisplayRow, ExpandedHunk>,
4108 cx: &mut WindowContext,
4109 ) -> Vec<AnyElement> {
4110 self.editor.update(cx, |editor, cx| {
4111 expanded_hunks_by_rows
4112 .into_iter()
4113 .map(|(display_row, hunk)| {
4114 let button = editor.close_hunk_diff_button(
4115 HoveredHunk {
4116 multi_buffer_range: hunk.hunk_range,
4117 status: hunk.status,
4118 diff_base_byte_range: hunk.diff_base_byte_range,
4119 },
4120 display_row,
4121 cx,
4122 );
4123
4124 prepaint_gutter_button(
4125 button,
4126 display_row,
4127 line_height,
4128 gutter_dimensions,
4129 scroll_pixel_position,
4130 gutter_hitbox,
4131 rows_with_hunk_bounds,
4132 cx,
4133 )
4134 })
4135 .collect()
4136 })
4137 }
4138}
4139
4140#[allow(clippy::too_many_arguments)]
4141fn prepaint_gutter_button(
4142 button: IconButton,
4143 row: DisplayRow,
4144 line_height: Pixels,
4145 gutter_dimensions: &GutterDimensions,
4146 scroll_pixel_position: gpui::Point<Pixels>,
4147 gutter_hitbox: &Hitbox,
4148 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4149 cx: &mut WindowContext<'_>,
4150) -> AnyElement {
4151 let mut button = button.into_any_element();
4152 let available_space = size(
4153 AvailableSpace::MinContent,
4154 AvailableSpace::Definite(line_height),
4155 );
4156 let indicator_size = button.layout_as_root(available_space, cx);
4157
4158 let blame_width = gutter_dimensions.git_blame_entries_width;
4159 let gutter_width = rows_with_hunk_bounds
4160 .get(&row)
4161 .map(|bounds| bounds.size.width);
4162 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
4163
4164 let mut x = left_offset;
4165 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
4166 - indicator_size.width
4167 - left_offset;
4168 x += available_width / 2.;
4169
4170 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
4171 y += (line_height - indicator_size.height) / 2.;
4172
4173 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
4174 button
4175}
4176
4177fn render_inline_blame_entry(
4178 blame: &gpui::Model<GitBlame>,
4179 blame_entry: BlameEntry,
4180 style: &EditorStyle,
4181 workspace: Option<WeakView<Workspace>>,
4182 cx: &mut WindowContext<'_>,
4183) -> AnyElement {
4184 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4185
4186 let author = blame_entry.author.as_deref().unwrap_or_default();
4187 let text = format!("{}, {}", author, relative_timestamp);
4188
4189 let details = blame.read(cx).details_for_entry(&blame_entry);
4190
4191 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
4192
4193 h_flex()
4194 .id("inline-blame")
4195 .w_full()
4196 .font_family(style.text.font().family)
4197 .text_color(cx.theme().status().hint)
4198 .line_height(style.text.line_height)
4199 .child(Icon::new(IconName::FileGit).color(Color::Hint))
4200 .child(text)
4201 .gap_2()
4202 .hoverable_tooltip(move |_| tooltip.clone().into())
4203 .into_any()
4204}
4205
4206fn render_blame_entry(
4207 ix: usize,
4208 blame: &gpui::Model<GitBlame>,
4209 blame_entry: BlameEntry,
4210 style: &EditorStyle,
4211 last_used_color: &mut Option<(PlayerColor, Oid)>,
4212 editor: View<Editor>,
4213 cx: &mut WindowContext<'_>,
4214) -> AnyElement {
4215 let mut sha_color = cx
4216 .theme()
4217 .players()
4218 .color_for_participant(blame_entry.sha.into());
4219 // If the last color we used is the same as the one we get for this line, but
4220 // the commit SHAs are different, then we try again to get a different color.
4221 match *last_used_color {
4222 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
4223 let index: u32 = blame_entry.sha.into();
4224 sha_color = cx.theme().players().color_for_participant(index + 1);
4225 }
4226 _ => {}
4227 };
4228 last_used_color.replace((sha_color, blame_entry.sha));
4229
4230 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4231
4232 let short_commit_id = blame_entry.sha.display_short();
4233
4234 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
4235 let name = util::truncate_and_trailoff(author_name, 20);
4236
4237 let details = blame.read(cx).details_for_entry(&blame_entry);
4238
4239 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
4240
4241 let tooltip = cx.new_view(|_| {
4242 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
4243 });
4244
4245 h_flex()
4246 .w_full()
4247 .font_family(style.text.font().family)
4248 .line_height(style.text.line_height)
4249 .id(("blame", ix))
4250 .children([
4251 div()
4252 .text_color(sha_color.cursor)
4253 .child(short_commit_id)
4254 .mr_2(),
4255 div()
4256 .w_full()
4257 .h_flex()
4258 .justify_between()
4259 .text_color(cx.theme().status().hint)
4260 .child(name)
4261 .child(relative_timestamp),
4262 ])
4263 .on_mouse_down(MouseButton::Right, {
4264 let blame_entry = blame_entry.clone();
4265 let details = details.clone();
4266 move |event, cx| {
4267 deploy_blame_entry_context_menu(
4268 &blame_entry,
4269 details.as_ref(),
4270 editor.clone(),
4271 event.position,
4272 cx,
4273 );
4274 }
4275 })
4276 .hover(|style| style.bg(cx.theme().colors().element_hover))
4277 .when_some(
4278 details.and_then(|details| details.permalink),
4279 |this, url| {
4280 let url = url.clone();
4281 this.cursor_pointer().on_click(move |_, cx| {
4282 cx.stop_propagation();
4283 cx.open_url(url.as_str())
4284 })
4285 },
4286 )
4287 .hoverable_tooltip(move |_| tooltip.clone().into())
4288 .into_any()
4289}
4290
4291fn deploy_blame_entry_context_menu(
4292 blame_entry: &BlameEntry,
4293 details: Option<&CommitDetails>,
4294 editor: View<Editor>,
4295 position: gpui::Point<Pixels>,
4296 cx: &mut WindowContext<'_>,
4297) {
4298 let context_menu = ContextMenu::build(cx, move |menu, _| {
4299 let sha = format!("{}", blame_entry.sha);
4300 menu.on_blur_subscription(Subscription::new(|| {}))
4301 .entry("Copy commit SHA", None, move |cx| {
4302 cx.write_to_clipboard(ClipboardItem::new_string(sha.clone()));
4303 })
4304 .when_some(
4305 details.and_then(|details| details.permalink.clone()),
4306 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
4307 )
4308 });
4309
4310 editor.update(cx, move |editor, cx| {
4311 editor.mouse_context_menu = Some(MouseContextMenu::pinned_to_screen(
4312 position,
4313 context_menu,
4314 cx,
4315 ));
4316 cx.notify();
4317 });
4318}
4319
4320#[derive(Debug)]
4321pub(crate) struct LineWithInvisibles {
4322 fragments: SmallVec<[LineFragment; 1]>,
4323 invisibles: Vec<Invisible>,
4324 len: usize,
4325 width: Pixels,
4326 font_size: Pixels,
4327}
4328
4329#[allow(clippy::large_enum_variant)]
4330enum LineFragment {
4331 Text(ShapedLine),
4332 Element {
4333 element: Option<AnyElement>,
4334 size: Size<Pixels>,
4335 len: usize,
4336 },
4337}
4338
4339impl fmt::Debug for LineFragment {
4340 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
4341 match self {
4342 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
4343 LineFragment::Element { size, len, .. } => f
4344 .debug_struct("Element")
4345 .field("size", size)
4346 .field("len", len)
4347 .finish(),
4348 }
4349 }
4350}
4351
4352impl LineWithInvisibles {
4353 #[allow(clippy::too_many_arguments)]
4354 fn from_chunks<'a>(
4355 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
4356 text_style: &TextStyle,
4357 max_line_len: usize,
4358 max_line_count: usize,
4359 line_number_layouts: &[Option<ShapedLine>],
4360 editor_mode: EditorMode,
4361 text_width: Pixels,
4362 cx: &mut WindowContext,
4363 ) -> Vec<Self> {
4364 let mut layouts = Vec::with_capacity(max_line_count);
4365 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
4366 let mut line = String::new();
4367 let mut invisibles = Vec::new();
4368 let mut width = Pixels::ZERO;
4369 let mut len = 0;
4370 let mut styles = Vec::new();
4371 let mut non_whitespace_added = false;
4372 let mut row = 0;
4373 let mut line_exceeded_max_len = false;
4374 let font_size = text_style.font_size.to_pixels(cx.rem_size());
4375
4376 let ellipsis = SharedString::from("⋯");
4377
4378 for highlighted_chunk in chunks.chain([HighlightedChunk {
4379 text: "\n",
4380 style: None,
4381 is_tab: false,
4382 renderer: None,
4383 }]) {
4384 if let Some(renderer) = highlighted_chunk.renderer {
4385 if !line.is_empty() {
4386 let shaped_line = cx
4387 .text_system()
4388 .shape_line(line.clone().into(), font_size, &styles)
4389 .unwrap();
4390 width += shaped_line.width;
4391 len += shaped_line.len;
4392 fragments.push(LineFragment::Text(shaped_line));
4393 line.clear();
4394 styles.clear();
4395 }
4396
4397 let available_width = if renderer.constrain_width {
4398 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
4399 ellipsis.clone()
4400 } else {
4401 SharedString::from(Arc::from(highlighted_chunk.text))
4402 };
4403 let shaped_line = cx
4404 .text_system()
4405 .shape_line(
4406 chunk,
4407 font_size,
4408 &[text_style.to_run(highlighted_chunk.text.len())],
4409 )
4410 .unwrap();
4411 AvailableSpace::Definite(shaped_line.width)
4412 } else {
4413 AvailableSpace::MinContent
4414 };
4415
4416 let mut element = (renderer.render)(&mut ChunkRendererContext {
4417 context: cx,
4418 max_width: text_width,
4419 });
4420 let line_height = text_style.line_height_in_pixels(cx.rem_size());
4421 let size = element.layout_as_root(
4422 size(available_width, AvailableSpace::Definite(line_height)),
4423 cx,
4424 );
4425
4426 width += size.width;
4427 len += highlighted_chunk.text.len();
4428 fragments.push(LineFragment::Element {
4429 element: Some(element),
4430 size,
4431 len: highlighted_chunk.text.len(),
4432 });
4433 } else {
4434 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
4435 if ix > 0 {
4436 let shaped_line = cx
4437 .text_system()
4438 .shape_line(line.clone().into(), font_size, &styles)
4439 .unwrap();
4440 width += shaped_line.width;
4441 len += shaped_line.len;
4442 fragments.push(LineFragment::Text(shaped_line));
4443 layouts.push(Self {
4444 width: mem::take(&mut width),
4445 len: mem::take(&mut len),
4446 fragments: mem::take(&mut fragments),
4447 invisibles: std::mem::take(&mut invisibles),
4448 font_size,
4449 });
4450
4451 line.clear();
4452 styles.clear();
4453 row += 1;
4454 line_exceeded_max_len = false;
4455 non_whitespace_added = false;
4456 if row == max_line_count {
4457 return layouts;
4458 }
4459 }
4460
4461 if !line_chunk.is_empty() && !line_exceeded_max_len {
4462 let text_style = if let Some(style) = highlighted_chunk.style {
4463 Cow::Owned(text_style.clone().highlight(style))
4464 } else {
4465 Cow::Borrowed(text_style)
4466 };
4467
4468 if line.len() + line_chunk.len() > max_line_len {
4469 let mut chunk_len = max_line_len - line.len();
4470 while !line_chunk.is_char_boundary(chunk_len) {
4471 chunk_len -= 1;
4472 }
4473 line_chunk = &line_chunk[..chunk_len];
4474 line_exceeded_max_len = true;
4475 }
4476
4477 styles.push(TextRun {
4478 len: line_chunk.len(),
4479 font: text_style.font(),
4480 color: text_style.color,
4481 background_color: text_style.background_color,
4482 underline: text_style.underline,
4483 strikethrough: text_style.strikethrough,
4484 });
4485
4486 if editor_mode == EditorMode::Full {
4487 // Line wrap pads its contents with fake whitespaces,
4488 // avoid printing them
4489 let inside_wrapped_string = line_number_layouts
4490 .get(row)
4491 .and_then(|layout| layout.as_ref())
4492 .is_none();
4493 if highlighted_chunk.is_tab {
4494 if non_whitespace_added || !inside_wrapped_string {
4495 invisibles.push(Invisible::Tab {
4496 line_start_offset: line.len(),
4497 line_end_offset: line.len() + line_chunk.len(),
4498 });
4499 }
4500 } else {
4501 invisibles.extend(
4502 line_chunk
4503 .bytes()
4504 .enumerate()
4505 .filter(|(_, line_byte)| {
4506 let is_whitespace =
4507 (*line_byte as char).is_whitespace();
4508 non_whitespace_added |= !is_whitespace;
4509 is_whitespace
4510 && (non_whitespace_added || !inside_wrapped_string)
4511 })
4512 .map(|(whitespace_index, _)| Invisible::Whitespace {
4513 line_offset: line.len() + whitespace_index,
4514 }),
4515 )
4516 }
4517 }
4518
4519 line.push_str(line_chunk);
4520 }
4521 }
4522 }
4523 }
4524
4525 layouts
4526 }
4527
4528 fn prepaint(
4529 &mut self,
4530 line_height: Pixels,
4531 scroll_pixel_position: gpui::Point<Pixels>,
4532 row: DisplayRow,
4533 content_origin: gpui::Point<Pixels>,
4534 line_elements: &mut SmallVec<[AnyElement; 1]>,
4535 cx: &mut WindowContext,
4536 ) {
4537 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
4538 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
4539 for fragment in &mut self.fragments {
4540 match fragment {
4541 LineFragment::Text(line) => {
4542 fragment_origin.x += line.width;
4543 }
4544 LineFragment::Element { element, size, .. } => {
4545 let mut element = element
4546 .take()
4547 .expect("you can't prepaint LineWithInvisibles twice");
4548
4549 // Center the element vertically within the line.
4550 let mut element_origin = fragment_origin;
4551 element_origin.y += (line_height - size.height) / 2.;
4552 element.prepaint_at(element_origin, cx);
4553 line_elements.push(element);
4554
4555 fragment_origin.x += size.width;
4556 }
4557 }
4558 }
4559 }
4560
4561 fn draw(
4562 &self,
4563 layout: &EditorLayout,
4564 row: DisplayRow,
4565 content_origin: gpui::Point<Pixels>,
4566 whitespace_setting: ShowWhitespaceSetting,
4567 selection_ranges: &[Range<DisplayPoint>],
4568 cx: &mut WindowContext,
4569 ) {
4570 let line_height = layout.position_map.line_height;
4571 let line_y = line_height
4572 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
4573
4574 let mut fragment_origin =
4575 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
4576
4577 for fragment in &self.fragments {
4578 match fragment {
4579 LineFragment::Text(line) => {
4580 line.paint(fragment_origin, line_height, cx).log_err();
4581 fragment_origin.x += line.width;
4582 }
4583 LineFragment::Element { size, .. } => {
4584 fragment_origin.x += size.width;
4585 }
4586 }
4587 }
4588
4589 self.draw_invisibles(
4590 selection_ranges,
4591 layout,
4592 content_origin,
4593 line_y,
4594 row,
4595 line_height,
4596 whitespace_setting,
4597 cx,
4598 );
4599 }
4600
4601 #[allow(clippy::too_many_arguments)]
4602 fn draw_invisibles(
4603 &self,
4604 selection_ranges: &[Range<DisplayPoint>],
4605 layout: &EditorLayout,
4606 content_origin: gpui::Point<Pixels>,
4607 line_y: Pixels,
4608 row: DisplayRow,
4609 line_height: Pixels,
4610 whitespace_setting: ShowWhitespaceSetting,
4611 cx: &mut WindowContext,
4612 ) {
4613 let extract_whitespace_info = |invisible: &Invisible| {
4614 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
4615 Invisible::Tab {
4616 line_start_offset,
4617 line_end_offset,
4618 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
4619 Invisible::Whitespace { line_offset } => {
4620 (*line_offset, line_offset + 1, &layout.space_invisible)
4621 }
4622 };
4623
4624 let x_offset = self.x_for_index(token_offset);
4625 let invisible_offset =
4626 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
4627 let origin = content_origin
4628 + gpui::point(
4629 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
4630 line_y,
4631 );
4632
4633 (
4634 [token_offset, token_end_offset],
4635 Box::new(move |cx: &mut WindowContext| {
4636 invisible_symbol.paint(origin, line_height, cx).log_err();
4637 }),
4638 )
4639 };
4640
4641 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
4642 match whitespace_setting {
4643 ShowWhitespaceSetting::None => (),
4644 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
4645 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
4646 let invisible_point = DisplayPoint::new(row, start as u32);
4647 if !selection_ranges
4648 .iter()
4649 .any(|region| region.start <= invisible_point && invisible_point < region.end)
4650 {
4651 return;
4652 }
4653
4654 paint(cx);
4655 }),
4656
4657 // For a whitespace to be on a boundary, any of the following conditions need to be met:
4658 // - It is a tab
4659 // - It is adjacent to an edge (start or end)
4660 // - It is adjacent to a whitespace (left or right)
4661 ShowWhitespaceSetting::Boundary => {
4662 // 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
4663 // the above cases.
4664 // Note: We zip in the original `invisibles` to check for tab equality
4665 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
4666 for (([start, end], paint), invisible) in
4667 invisible_iter.zip_eq(self.invisibles.iter())
4668 {
4669 let should_render = match (&last_seen, invisible) {
4670 (_, Invisible::Tab { .. }) => true,
4671 (Some((_, last_end, _)), _) => *last_end == start,
4672 _ => false,
4673 };
4674
4675 if should_render || start == 0 || end == self.len {
4676 paint(cx);
4677
4678 // Since we are scanning from the left, we will skip over the first available whitespace that is part
4679 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
4680 if let Some((should_render_last, last_end, paint_last)) = last_seen {
4681 // Note that we need to make sure that the last one is actually adjacent
4682 if !should_render_last && last_end == start {
4683 paint_last(cx);
4684 }
4685 }
4686 }
4687
4688 // Manually render anything within a selection
4689 let invisible_point = DisplayPoint::new(row, start as u32);
4690 if selection_ranges.iter().any(|region| {
4691 region.start <= invisible_point && invisible_point < region.end
4692 }) {
4693 paint(cx);
4694 }
4695
4696 last_seen = Some((should_render, end, paint));
4697 }
4698 }
4699 }
4700 }
4701
4702 pub fn x_for_index(&self, index: usize) -> Pixels {
4703 let mut fragment_start_x = Pixels::ZERO;
4704 let mut fragment_start_index = 0;
4705
4706 for fragment in &self.fragments {
4707 match fragment {
4708 LineFragment::Text(shaped_line) => {
4709 let fragment_end_index = fragment_start_index + shaped_line.len;
4710 if index < fragment_end_index {
4711 return fragment_start_x
4712 + shaped_line.x_for_index(index - fragment_start_index);
4713 }
4714 fragment_start_x += shaped_line.width;
4715 fragment_start_index = fragment_end_index;
4716 }
4717 LineFragment::Element { len, size, .. } => {
4718 let fragment_end_index = fragment_start_index + len;
4719 if index < fragment_end_index {
4720 return fragment_start_x;
4721 }
4722 fragment_start_x += size.width;
4723 fragment_start_index = fragment_end_index;
4724 }
4725 }
4726 }
4727
4728 fragment_start_x
4729 }
4730
4731 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
4732 let mut fragment_start_x = Pixels::ZERO;
4733 let mut fragment_start_index = 0;
4734
4735 for fragment in &self.fragments {
4736 match fragment {
4737 LineFragment::Text(shaped_line) => {
4738 let fragment_end_x = fragment_start_x + shaped_line.width;
4739 if x < fragment_end_x {
4740 return Some(
4741 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
4742 );
4743 }
4744 fragment_start_x = fragment_end_x;
4745 fragment_start_index += shaped_line.len;
4746 }
4747 LineFragment::Element { len, size, .. } => {
4748 let fragment_end_x = fragment_start_x + size.width;
4749 if x < fragment_end_x {
4750 return Some(fragment_start_index);
4751 }
4752 fragment_start_index += len;
4753 fragment_start_x = fragment_end_x;
4754 }
4755 }
4756 }
4757
4758 None
4759 }
4760
4761 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
4762 let mut fragment_start_index = 0;
4763
4764 for fragment in &self.fragments {
4765 match fragment {
4766 LineFragment::Text(shaped_line) => {
4767 let fragment_end_index = fragment_start_index + shaped_line.len;
4768 if index < fragment_end_index {
4769 return shaped_line.font_id_for_index(index - fragment_start_index);
4770 }
4771 fragment_start_index = fragment_end_index;
4772 }
4773 LineFragment::Element { len, .. } => {
4774 let fragment_end_index = fragment_start_index + len;
4775 if index < fragment_end_index {
4776 return None;
4777 }
4778 fragment_start_index = fragment_end_index;
4779 }
4780 }
4781 }
4782
4783 None
4784 }
4785}
4786
4787#[derive(Debug, Clone, Copy, PartialEq, Eq)]
4788enum Invisible {
4789 /// A tab character
4790 ///
4791 /// A tab character is internally represented by spaces (configured by the user's tab width)
4792 /// aligned to the nearest column, so it's necessary to store the start and end offset for
4793 /// adjacency checks.
4794 Tab {
4795 line_start_offset: usize,
4796 line_end_offset: usize,
4797 },
4798 Whitespace {
4799 line_offset: usize,
4800 },
4801}
4802
4803impl EditorElement {
4804 /// Returns the rem size to use when rendering the [`EditorElement`].
4805 ///
4806 /// This allows UI elements to scale based on the `buffer_font_size`.
4807 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
4808 match self.editor.read(cx).mode {
4809 EditorMode::Full => {
4810 let buffer_font_size = self.style.text.font_size;
4811 match buffer_font_size {
4812 AbsoluteLength::Pixels(pixels) => {
4813 let rem_size_scale = {
4814 // Our default UI font size is 14px on a 16px base scale.
4815 // This means the default UI font size is 0.875rems.
4816 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
4817
4818 // We then determine the delta between a single rem and the default font
4819 // size scale.
4820 let default_font_size_delta = 1. - default_font_size_scale;
4821
4822 // Finally, we add this delta to 1rem to get the scale factor that
4823 // should be used to scale up the UI.
4824 1. + default_font_size_delta
4825 };
4826
4827 Some(pixels * rem_size_scale)
4828 }
4829 AbsoluteLength::Rems(rems) => {
4830 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
4831 }
4832 }
4833 }
4834 // We currently use single-line and auto-height editors in UI contexts,
4835 // so we don't want to scale everything with the buffer font size, as it
4836 // ends up looking off.
4837 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
4838 }
4839 }
4840}
4841
4842impl Element for EditorElement {
4843 type RequestLayoutState = ();
4844 type PrepaintState = EditorLayout;
4845
4846 fn id(&self) -> Option<ElementId> {
4847 None
4848 }
4849
4850 fn request_layout(
4851 &mut self,
4852 _: Option<&GlobalElementId>,
4853 cx: &mut WindowContext,
4854 ) -> (gpui::LayoutId, ()) {
4855 let rem_size = self.rem_size(cx);
4856 cx.with_rem_size(rem_size, |cx| {
4857 self.editor.update(cx, |editor, cx| {
4858 editor.set_style(self.style.clone(), cx);
4859
4860 let layout_id = match editor.mode {
4861 EditorMode::SingleLine { auto_width } => {
4862 let rem_size = cx.rem_size();
4863
4864 let height = self.style.text.line_height_in_pixels(rem_size);
4865 if auto_width {
4866 let editor_handle = cx.view().clone();
4867 let style = self.style.clone();
4868 cx.request_measured_layout(Style::default(), move |_, _, cx| {
4869 let editor_snapshot =
4870 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
4871 let line = Self::layout_lines(
4872 DisplayRow(0)..DisplayRow(1),
4873 &[],
4874 &editor_snapshot,
4875 &style,
4876 px(f32::MAX),
4877 cx,
4878 )
4879 .pop()
4880 .unwrap();
4881
4882 let font_id = cx.text_system().resolve_font(&style.text.font());
4883 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4884 let em_width = cx
4885 .text_system()
4886 .typographic_bounds(font_id, font_size, 'm')
4887 .unwrap()
4888 .size
4889 .width;
4890
4891 size(line.width + em_width, height)
4892 })
4893 } else {
4894 let mut style = Style::default();
4895 style.size.height = height.into();
4896 style.size.width = relative(1.).into();
4897 cx.request_layout(style, None)
4898 }
4899 }
4900 EditorMode::AutoHeight { max_lines } => {
4901 let editor_handle = cx.view().clone();
4902 let max_line_number_width =
4903 self.max_line_number_width(&editor.snapshot(cx), cx);
4904 cx.request_measured_layout(
4905 Style::default(),
4906 move |known_dimensions, available_space, cx| {
4907 editor_handle
4908 .update(cx, |editor, cx| {
4909 compute_auto_height_layout(
4910 editor,
4911 max_lines,
4912 max_line_number_width,
4913 known_dimensions,
4914 available_space.width,
4915 cx,
4916 )
4917 })
4918 .unwrap_or_default()
4919 },
4920 )
4921 }
4922 EditorMode::Full => {
4923 let mut style = Style::default();
4924 style.size.width = relative(1.).into();
4925 style.size.height = relative(1.).into();
4926 cx.request_layout(style, None)
4927 }
4928 };
4929
4930 (layout_id, ())
4931 })
4932 })
4933 }
4934
4935 fn prepaint(
4936 &mut self,
4937 _: Option<&GlobalElementId>,
4938 bounds: Bounds<Pixels>,
4939 _: &mut Self::RequestLayoutState,
4940 cx: &mut WindowContext,
4941 ) -> Self::PrepaintState {
4942 let text_style = TextStyleRefinement {
4943 font_size: Some(self.style.text.font_size),
4944 line_height: Some(self.style.text.line_height),
4945 ..Default::default()
4946 };
4947 let focus_handle = self.editor.focus_handle(cx);
4948 cx.set_view_id(self.editor.entity_id());
4949 cx.set_focus_handle(&focus_handle);
4950
4951 let rem_size = self.rem_size(cx);
4952 cx.with_rem_size(rem_size, |cx| {
4953 cx.with_text_style(Some(text_style), |cx| {
4954 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
4955 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
4956 let style = self.style.clone();
4957
4958 let font_id = cx.text_system().resolve_font(&style.text.font());
4959 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4960 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4961 let em_width = cx
4962 .text_system()
4963 .typographic_bounds(font_id, font_size, 'm')
4964 .unwrap()
4965 .size
4966 .width;
4967 let em_advance = cx
4968 .text_system()
4969 .advance(font_id, font_size, 'm')
4970 .unwrap()
4971 .width;
4972
4973 let gutter_dimensions = snapshot.gutter_dimensions(
4974 font_id,
4975 font_size,
4976 em_width,
4977 self.max_line_number_width(&snapshot, cx),
4978 cx,
4979 );
4980 let text_width = bounds.size.width - gutter_dimensions.width;
4981
4982 let right_margin = if snapshot.mode == EditorMode::Full {
4983 EditorElement::SCROLLBAR_WIDTH
4984 } else {
4985 px(0.)
4986 };
4987 let overscroll = size(em_width + right_margin, px(0.));
4988
4989 let editor_width =
4990 text_width - gutter_dimensions.margin - overscroll.width - em_width;
4991
4992 snapshot = self.editor.update(cx, |editor, cx| {
4993 editor.last_bounds = Some(bounds);
4994 editor.gutter_dimensions = gutter_dimensions;
4995 editor.set_visible_line_count(bounds.size.height / line_height, cx);
4996
4997 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
4998 snapshot
4999 } else {
5000 let wrap_width = match editor.soft_wrap_mode(cx) {
5001 SoftWrap::None => None,
5002 SoftWrap::PreferLine => {
5003 Some((MAX_LINE_LEN / 2) as f32 * em_advance)
5004 }
5005 SoftWrap::EditorWidth => Some(editor_width),
5006 SoftWrap::Column(column) => Some(column as f32 * em_advance),
5007 SoftWrap::Bounded(column) => {
5008 Some(editor_width.min(column as f32 * em_advance))
5009 }
5010 };
5011
5012 if editor.set_wrap_width(wrap_width, cx) {
5013 editor.snapshot(cx)
5014 } else {
5015 snapshot
5016 }
5017 }
5018 });
5019
5020 let wrap_guides = self
5021 .editor
5022 .read(cx)
5023 .wrap_guides(cx)
5024 .iter()
5025 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
5026 .collect::<SmallVec<[_; 2]>>();
5027
5028 let hitbox = cx.insert_hitbox(bounds, false);
5029 let gutter_hitbox =
5030 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
5031 let text_hitbox = cx.insert_hitbox(
5032 Bounds {
5033 origin: gutter_hitbox.upper_right(),
5034 size: size(text_width, bounds.size.height),
5035 },
5036 false,
5037 );
5038 // Offset the content_bounds from the text_bounds by the gutter margin (which
5039 // is roughly half a character wide) to make hit testing work more like how we want.
5040 let content_origin =
5041 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
5042
5043 let height_in_lines = bounds.size.height / line_height;
5044 let max_row = snapshot.max_point().row().as_f32();
5045 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
5046 (max_row - height_in_lines + 1.).max(0.)
5047 } else {
5048 let settings = EditorSettings::get_global(cx);
5049 match settings.scroll_beyond_last_line {
5050 ScrollBeyondLastLine::OnePage => max_row,
5051 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
5052 ScrollBeyondLastLine::VerticalScrollMargin => {
5053 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
5054 .max(0.)
5055 }
5056 }
5057 };
5058
5059 let mut autoscroll_request = None;
5060 let mut autoscroll_containing_element = false;
5061 let mut autoscroll_horizontally = false;
5062 self.editor.update(cx, |editor, cx| {
5063 autoscroll_request = editor.autoscroll_request();
5064 autoscroll_containing_element =
5065 autoscroll_request.is_some() || editor.has_pending_selection();
5066 autoscroll_horizontally =
5067 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
5068 snapshot = editor.snapshot(cx);
5069 });
5070
5071 let mut scroll_position = snapshot.scroll_position();
5072 // The scroll position is a fractional point, the whole number of which represents
5073 // the top of the window in terms of display rows.
5074 let start_row = DisplayRow(scroll_position.y as u32);
5075 let max_row = snapshot.max_point().row();
5076 let end_row = cmp::min(
5077 (scroll_position.y + height_in_lines).ceil() as u32,
5078 max_row.next_row().0,
5079 );
5080 let end_row = DisplayRow(end_row);
5081
5082 let buffer_rows = snapshot
5083 .buffer_rows(start_row)
5084 .take((start_row..end_row).len())
5085 .collect::<Vec<_>>();
5086
5087 let start_anchor = if start_row == Default::default() {
5088 Anchor::min()
5089 } else {
5090 snapshot.buffer_snapshot.anchor_before(
5091 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
5092 )
5093 };
5094 let end_anchor = if end_row > max_row {
5095 Anchor::max()
5096 } else {
5097 snapshot.buffer_snapshot.anchor_before(
5098 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
5099 )
5100 };
5101
5102 let highlighted_rows = self
5103 .editor
5104 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
5105 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
5106 start_anchor..end_anchor,
5107 &snapshot.display_snapshot,
5108 cx.theme().colors(),
5109 );
5110 let highlighted_gutter_ranges =
5111 self.editor.read(cx).gutter_highlights_in_range(
5112 start_anchor..end_anchor,
5113 &snapshot.display_snapshot,
5114 cx,
5115 );
5116
5117 let redacted_ranges = self.editor.read(cx).redacted_ranges(
5118 start_anchor..end_anchor,
5119 &snapshot.display_snapshot,
5120 cx,
5121 );
5122
5123 let (selections, active_rows, newest_selection_head) = self.layout_selections(
5124 start_anchor,
5125 end_anchor,
5126 &snapshot,
5127 start_row,
5128 end_row,
5129 cx,
5130 );
5131
5132 let line_numbers = self.layout_line_numbers(
5133 start_row..end_row,
5134 buffer_rows.iter().copied(),
5135 &active_rows,
5136 newest_selection_head,
5137 &snapshot,
5138 cx,
5139 );
5140
5141 let mut gutter_fold_toggles =
5142 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5143 self.layout_gutter_fold_toggles(
5144 start_row..end_row,
5145 buffer_rows.iter().copied(),
5146 &active_rows,
5147 &snapshot,
5148 cx,
5149 )
5150 });
5151 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5152 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
5153 });
5154
5155 let display_hunks = self.layout_gutter_git_hunks(
5156 line_height,
5157 &gutter_hitbox,
5158 start_row..end_row,
5159 &snapshot,
5160 cx,
5161 );
5162
5163 let mut max_visible_line_width = Pixels::ZERO;
5164 let mut line_layouts = Self::layout_lines(
5165 start_row..end_row,
5166 &line_numbers,
5167 &snapshot,
5168 &self.style,
5169 editor_width,
5170 cx,
5171 );
5172 for line_with_invisibles in &line_layouts {
5173 if line_with_invisibles.width > max_visible_line_width {
5174 max_visible_line_width = line_with_invisibles.width;
5175 }
5176 }
5177
5178 let longest_line_width =
5179 layout_line(snapshot.longest_row(), &snapshot, &style, editor_width, cx)
5180 .width;
5181 let mut scroll_width =
5182 longest_line_width.max(max_visible_line_width) + overscroll.width;
5183
5184 let blocks = cx.with_element_namespace("blocks", |cx| {
5185 self.render_blocks(
5186 start_row..end_row,
5187 &snapshot,
5188 &hitbox,
5189 &text_hitbox,
5190 editor_width,
5191 &mut scroll_width,
5192 &gutter_dimensions,
5193 em_width,
5194 gutter_dimensions.full_width(),
5195 line_height,
5196 &line_layouts,
5197 cx,
5198 )
5199 });
5200 let mut blocks = match blocks {
5201 Ok(blocks) => blocks,
5202 Err(resized_blocks) => {
5203 self.editor.update(cx, |editor, cx| {
5204 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
5205 });
5206 return self.prepaint(None, bounds, &mut (), cx);
5207 }
5208 };
5209
5210 let start_buffer_row =
5211 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
5212 let end_buffer_row =
5213 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
5214
5215 let scroll_max = point(
5216 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5217 max_row.as_f32(),
5218 );
5219
5220 self.editor.update(cx, |editor, cx| {
5221 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5222
5223 let autoscrolled = if autoscroll_horizontally {
5224 editor.autoscroll_horizontally(
5225 start_row,
5226 text_hitbox.size.width,
5227 scroll_width,
5228 em_width,
5229 &line_layouts,
5230 cx,
5231 )
5232 } else {
5233 false
5234 };
5235
5236 if clamped || autoscrolled {
5237 snapshot = editor.snapshot(cx);
5238 scroll_position = snapshot.scroll_position();
5239 }
5240 });
5241
5242 let scroll_pixel_position = point(
5243 scroll_position.x * em_width,
5244 scroll_position.y * line_height,
5245 );
5246
5247 let indent_guides = self.layout_indent_guides(
5248 content_origin,
5249 text_hitbox.origin,
5250 start_buffer_row..end_buffer_row,
5251 scroll_pixel_position,
5252 line_height,
5253 &snapshot,
5254 cx,
5255 );
5256
5257 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5258 self.prepaint_crease_trailers(
5259 crease_trailers,
5260 &line_layouts,
5261 line_height,
5262 content_origin,
5263 scroll_pixel_position,
5264 em_width,
5265 cx,
5266 )
5267 });
5268
5269 let mut inline_blame = None;
5270 if let Some(newest_selection_head) = newest_selection_head {
5271 let display_row = newest_selection_head.row();
5272 if (start_row..end_row).contains(&display_row) {
5273 let line_ix = display_row.minus(start_row) as usize;
5274 let line_layout = &line_layouts[line_ix];
5275 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
5276 inline_blame = self.layout_inline_blame(
5277 display_row,
5278 &snapshot.display_snapshot,
5279 line_layout,
5280 crease_trailer_layout,
5281 em_width,
5282 content_origin,
5283 scroll_pixel_position,
5284 line_height,
5285 cx,
5286 );
5287 }
5288 }
5289
5290 let blamed_display_rows = self.layout_blame_entries(
5291 buffer_rows.into_iter(),
5292 em_width,
5293 scroll_position,
5294 line_height,
5295 &gutter_hitbox,
5296 gutter_dimensions.git_blame_entries_width,
5297 cx,
5298 );
5299
5300 let scroll_max = point(
5301 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5302 max_scroll_top,
5303 );
5304
5305 self.editor.update(cx, |editor, cx| {
5306 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5307
5308 let autoscrolled = if autoscroll_horizontally {
5309 editor.autoscroll_horizontally(
5310 start_row,
5311 text_hitbox.size.width,
5312 scroll_width,
5313 em_width,
5314 &line_layouts,
5315 cx,
5316 )
5317 } else {
5318 false
5319 };
5320
5321 if clamped || autoscrolled {
5322 snapshot = editor.snapshot(cx);
5323 scroll_position = snapshot.scroll_position();
5324 }
5325 });
5326
5327 let line_elements = self.prepaint_lines(
5328 start_row,
5329 &mut line_layouts,
5330 line_height,
5331 scroll_pixel_position,
5332 content_origin,
5333 cx,
5334 );
5335
5336 cx.with_element_namespace("blocks", |cx| {
5337 self.layout_blocks(
5338 &mut blocks,
5339 &hitbox,
5340 line_height,
5341 scroll_pixel_position,
5342 cx,
5343 );
5344 });
5345
5346 let cursors = self.collect_cursors(&snapshot, cx);
5347 let visible_row_range = start_row..end_row;
5348 let non_visible_cursors = cursors
5349 .iter()
5350 .any(move |c| !visible_row_range.contains(&c.0.row()));
5351
5352 let visible_cursors = self.layout_visible_cursors(
5353 &snapshot,
5354 &selections,
5355 start_row..end_row,
5356 &line_layouts,
5357 &text_hitbox,
5358 content_origin,
5359 scroll_position,
5360 scroll_pixel_position,
5361 line_height,
5362 em_width,
5363 autoscroll_containing_element,
5364 cx,
5365 );
5366
5367 let scrollbar_layout = self.layout_scrollbar(
5368 &snapshot,
5369 bounds,
5370 scroll_position,
5371 height_in_lines,
5372 non_visible_cursors,
5373 cx,
5374 );
5375
5376 let gutter_settings = EditorSettings::get_global(cx).gutter;
5377
5378 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
5379 editor
5380 .expanded_hunks
5381 .hunks(false)
5382 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
5383 .map(|expanded_hunk| {
5384 let start_row = expanded_hunk
5385 .hunk_range
5386 .start
5387 .to_display_point(&snapshot)
5388 .row();
5389 (start_row, expanded_hunk.clone())
5390 })
5391 .collect::<HashMap<_, _>>()
5392 });
5393
5394 let rows_with_hunk_bounds = display_hunks
5395 .iter()
5396 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
5397 .fold(
5398 HashMap::default(),
5399 |mut rows_with_hunk_bounds, (hunk, bounds)| {
5400 match hunk {
5401 DisplayDiffHunk::Folded { display_row } => {
5402 rows_with_hunk_bounds.insert(*display_row, bounds);
5403 }
5404 DisplayDiffHunk::Unfolded {
5405 display_row_range, ..
5406 } => {
5407 for display_row in display_row_range.iter_rows() {
5408 rows_with_hunk_bounds.insert(display_row, bounds);
5409 }
5410 }
5411 }
5412 rows_with_hunk_bounds
5413 },
5414 );
5415 let mut _context_menu_visible = false;
5416 let mut code_actions_indicator = None;
5417 if let Some(newest_selection_head) = newest_selection_head {
5418 if (start_row..end_row).contains(&newest_selection_head.row()) {
5419 _context_menu_visible = self.layout_context_menu(
5420 line_height,
5421 &hitbox,
5422 &text_hitbox,
5423 content_origin,
5424 start_row,
5425 scroll_pixel_position,
5426 &line_layouts,
5427 newest_selection_head,
5428 gutter_dimensions.width - gutter_dimensions.left_padding,
5429 cx,
5430 );
5431
5432 let show_code_actions = snapshot
5433 .show_code_actions
5434 .unwrap_or(gutter_settings.code_actions);
5435 if show_code_actions {
5436 let newest_selection_point =
5437 newest_selection_head.to_point(&snapshot.display_snapshot);
5438 let newest_selection_display_row =
5439 newest_selection_point.to_display_point(&snapshot).row();
5440 if !expanded_add_hunks_by_rows
5441 .contains_key(&newest_selection_display_row)
5442 {
5443 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
5444 MultiBufferRow(newest_selection_point.row),
5445 );
5446 if let Some((buffer, range)) = buffer {
5447 let buffer_id = buffer.remote_id();
5448 let row = range.start.row;
5449 let has_test_indicator = self
5450 .editor
5451 .read(cx)
5452 .tasks
5453 .contains_key(&(buffer_id, row));
5454
5455 if !has_test_indicator {
5456 code_actions_indicator = self
5457 .layout_code_actions_indicator(
5458 line_height,
5459 newest_selection_head,
5460 scroll_pixel_position,
5461 &gutter_dimensions,
5462 &gutter_hitbox,
5463 &rows_with_hunk_bounds,
5464 cx,
5465 );
5466 }
5467 }
5468 }
5469 }
5470 }
5471 }
5472
5473 let test_indicators = if gutter_settings.runnables {
5474 self.layout_run_indicators(
5475 line_height,
5476 start_row..end_row,
5477 scroll_pixel_position,
5478 &gutter_dimensions,
5479 &gutter_hitbox,
5480 &rows_with_hunk_bounds,
5481 &snapshot,
5482 cx,
5483 )
5484 } else {
5485 Vec::new()
5486 };
5487 let close_indicators = self.layout_hunk_diff_close_indicators(
5488 line_height,
5489 scroll_pixel_position,
5490 &gutter_dimensions,
5491 &gutter_hitbox,
5492 &rows_with_hunk_bounds,
5493 expanded_add_hunks_by_rows,
5494 cx,
5495 );
5496
5497 self.layout_signature_help(
5498 &hitbox,
5499 content_origin,
5500 scroll_pixel_position,
5501 newest_selection_head,
5502 start_row,
5503 &line_layouts,
5504 line_height,
5505 em_width,
5506 cx,
5507 );
5508
5509 if !cx.has_active_drag() {
5510 self.layout_hover_popovers(
5511 &snapshot,
5512 &hitbox,
5513 &text_hitbox,
5514 start_row..end_row,
5515 content_origin,
5516 scroll_pixel_position,
5517 &line_layouts,
5518 line_height,
5519 em_width,
5520 cx,
5521 );
5522 }
5523
5524 let mouse_context_menu =
5525 self.layout_mouse_context_menu(&snapshot, start_row..end_row, cx);
5526
5527 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5528 self.prepaint_gutter_fold_toggles(
5529 &mut gutter_fold_toggles,
5530 line_height,
5531 &gutter_dimensions,
5532 gutter_settings,
5533 scroll_pixel_position,
5534 &gutter_hitbox,
5535 cx,
5536 )
5537 });
5538
5539 let invisible_symbol_font_size = font_size / 2.;
5540 let tab_invisible = cx
5541 .text_system()
5542 .shape_line(
5543 "→".into(),
5544 invisible_symbol_font_size,
5545 &[TextRun {
5546 len: "→".len(),
5547 font: self.style.text.font(),
5548 color: cx.theme().colors().editor_invisible,
5549 background_color: None,
5550 underline: None,
5551 strikethrough: None,
5552 }],
5553 )
5554 .unwrap();
5555 let space_invisible = cx
5556 .text_system()
5557 .shape_line(
5558 "•".into(),
5559 invisible_symbol_font_size,
5560 &[TextRun {
5561 len: "•".len(),
5562 font: self.style.text.font(),
5563 color: cx.theme().colors().editor_invisible,
5564 background_color: None,
5565 underline: None,
5566 strikethrough: None,
5567 }],
5568 )
5569 .unwrap();
5570
5571 EditorLayout {
5572 mode: snapshot.mode,
5573 position_map: Rc::new(PositionMap {
5574 size: bounds.size,
5575 scroll_pixel_position,
5576 scroll_max,
5577 line_layouts,
5578 line_height,
5579 em_width,
5580 em_advance,
5581 snapshot,
5582 }),
5583 visible_display_row_range: start_row..end_row,
5584 wrap_guides,
5585 indent_guides,
5586 hitbox,
5587 text_hitbox,
5588 gutter_hitbox,
5589 gutter_dimensions,
5590 display_hunks,
5591 content_origin,
5592 scrollbar_layout,
5593 active_rows,
5594 highlighted_rows,
5595 highlighted_ranges,
5596 highlighted_gutter_ranges,
5597 redacted_ranges,
5598 line_elements,
5599 line_numbers,
5600 blamed_display_rows,
5601 inline_blame,
5602 blocks,
5603 cursors,
5604 visible_cursors,
5605 selections,
5606 mouse_context_menu,
5607 test_indicators,
5608 close_indicators,
5609 code_actions_indicator,
5610 gutter_fold_toggles,
5611 crease_trailers,
5612 tab_invisible,
5613 space_invisible,
5614 }
5615 })
5616 })
5617 })
5618 }
5619
5620 fn paint(
5621 &mut self,
5622 _: Option<&GlobalElementId>,
5623 bounds: Bounds<gpui::Pixels>,
5624 _: &mut Self::RequestLayoutState,
5625 layout: &mut Self::PrepaintState,
5626 cx: &mut WindowContext,
5627 ) {
5628 let focus_handle = self.editor.focus_handle(cx);
5629 let key_context = self.editor.update(cx, |editor, cx| editor.key_context(cx));
5630 cx.set_key_context(key_context);
5631 cx.handle_input(
5632 &focus_handle,
5633 ElementInputHandler::new(bounds, self.editor.clone()),
5634 );
5635 self.register_actions(cx);
5636 self.register_key_listeners(cx, layout);
5637
5638 let text_style = TextStyleRefinement {
5639 font_size: Some(self.style.text.font_size),
5640 line_height: Some(self.style.text.line_height),
5641 ..Default::default()
5642 };
5643 let mouse_position = cx.mouse_position();
5644 let hovered_hunk = layout
5645 .display_hunks
5646 .iter()
5647 .find_map(|(hunk, hunk_hitbox)| match hunk {
5648 DisplayDiffHunk::Folded { .. } => None,
5649 DisplayDiffHunk::Unfolded {
5650 diff_base_byte_range,
5651 multi_buffer_range,
5652 status,
5653 ..
5654 } => {
5655 if hunk_hitbox
5656 .as_ref()
5657 .map(|hitbox| hitbox.contains(&mouse_position))
5658 .unwrap_or(false)
5659 {
5660 Some(HoveredHunk {
5661 status: *status,
5662 multi_buffer_range: multi_buffer_range.clone(),
5663 diff_base_byte_range: diff_base_byte_range.clone(),
5664 })
5665 } else {
5666 None
5667 }
5668 }
5669 });
5670 let rem_size = self.rem_size(cx);
5671 cx.with_rem_size(rem_size, |cx| {
5672 cx.with_text_style(Some(text_style), |cx| {
5673 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
5674 self.paint_mouse_listeners(layout, hovered_hunk, cx);
5675 self.paint_background(layout, cx);
5676 self.paint_indent_guides(layout, cx);
5677
5678 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5679 self.paint_blamed_display_rows(layout, cx);
5680 self.paint_line_numbers(layout, cx);
5681 }
5682
5683 self.paint_text(layout, cx);
5684
5685 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5686 self.paint_gutter_highlights(layout, cx);
5687 self.paint_gutter_indicators(layout, cx);
5688 }
5689
5690 if !layout.blocks.is_empty() {
5691 cx.with_element_namespace("blocks", |cx| {
5692 self.paint_blocks(layout, cx);
5693 });
5694 }
5695
5696 self.paint_scrollbar(layout, cx);
5697 self.paint_mouse_context_menu(layout, cx);
5698 });
5699 })
5700 })
5701 }
5702}
5703
5704pub(super) fn gutter_bounds(
5705 editor_bounds: Bounds<Pixels>,
5706 gutter_dimensions: GutterDimensions,
5707) -> Bounds<Pixels> {
5708 Bounds {
5709 origin: editor_bounds.origin,
5710 size: size(gutter_dimensions.width, editor_bounds.size.height),
5711 }
5712}
5713
5714impl IntoElement for EditorElement {
5715 type Element = Self;
5716
5717 fn into_element(self) -> Self::Element {
5718 self
5719 }
5720}
5721
5722pub struct EditorLayout {
5723 position_map: Rc<PositionMap>,
5724 hitbox: Hitbox,
5725 text_hitbox: Hitbox,
5726 gutter_hitbox: Hitbox,
5727 gutter_dimensions: GutterDimensions,
5728 content_origin: gpui::Point<Pixels>,
5729 scrollbar_layout: Option<ScrollbarLayout>,
5730 mode: EditorMode,
5731 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
5732 indent_guides: Option<Vec<IndentGuideLayout>>,
5733 visible_display_row_range: Range<DisplayRow>,
5734 active_rows: BTreeMap<DisplayRow, bool>,
5735 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
5736 line_elements: SmallVec<[AnyElement; 1]>,
5737 line_numbers: Vec<Option<ShapedLine>>,
5738 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
5739 blamed_display_rows: Option<Vec<AnyElement>>,
5740 inline_blame: Option<AnyElement>,
5741 blocks: Vec<BlockLayout>,
5742 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5743 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5744 redacted_ranges: Vec<Range<DisplayPoint>>,
5745 cursors: Vec<(DisplayPoint, Hsla)>,
5746 visible_cursors: Vec<CursorLayout>,
5747 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
5748 code_actions_indicator: Option<AnyElement>,
5749 test_indicators: Vec<AnyElement>,
5750 close_indicators: Vec<AnyElement>,
5751 gutter_fold_toggles: Vec<Option<AnyElement>>,
5752 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
5753 mouse_context_menu: Option<AnyElement>,
5754 tab_invisible: ShapedLine,
5755 space_invisible: ShapedLine,
5756}
5757
5758impl EditorLayout {
5759 fn line_end_overshoot(&self) -> Pixels {
5760 0.15 * self.position_map.line_height
5761 }
5762}
5763
5764struct ColoredRange<T> {
5765 start: T,
5766 end: T,
5767 color: Hsla,
5768}
5769
5770#[derive(Clone)]
5771struct ScrollbarLayout {
5772 hitbox: Hitbox,
5773 visible_row_range: Range<f32>,
5774 visible: bool,
5775 row_height: Pixels,
5776 thumb_height: Pixels,
5777}
5778
5779impl ScrollbarLayout {
5780 const BORDER_WIDTH: Pixels = px(1.0);
5781 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
5782 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
5783 const MIN_THUMB_HEIGHT: Pixels = px(20.0);
5784
5785 fn thumb_bounds(&self) -> Bounds<Pixels> {
5786 let thumb_top = self.y_for_row(self.visible_row_range.start);
5787 let thumb_bottom = thumb_top + self.thumb_height;
5788 Bounds::from_corners(
5789 point(self.hitbox.left(), thumb_top),
5790 point(self.hitbox.right(), thumb_bottom),
5791 )
5792 }
5793
5794 fn y_for_row(&self, row: f32) -> Pixels {
5795 self.hitbox.top() + row * self.row_height
5796 }
5797
5798 fn marker_quads_for_ranges(
5799 &self,
5800 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
5801 column: Option<usize>,
5802 ) -> Vec<PaintQuad> {
5803 struct MinMax {
5804 min: Pixels,
5805 max: Pixels,
5806 }
5807 let (x_range, height_limit) = if let Some(column) = column {
5808 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
5809 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
5810 let end = start + column_width;
5811 (
5812 Range { start, end },
5813 MinMax {
5814 min: Self::MIN_MARKER_HEIGHT,
5815 max: px(f32::MAX),
5816 },
5817 )
5818 } else {
5819 (
5820 Range {
5821 start: Self::BORDER_WIDTH,
5822 end: self.hitbox.size.width,
5823 },
5824 MinMax {
5825 min: Self::LINE_MARKER_HEIGHT,
5826 max: Self::LINE_MARKER_HEIGHT,
5827 },
5828 )
5829 };
5830
5831 let row_to_y = |row: DisplayRow| row.as_f32() * self.row_height;
5832 let mut pixel_ranges = row_ranges
5833 .into_iter()
5834 .map(|range| {
5835 let start_y = row_to_y(range.start);
5836 let end_y = row_to_y(range.end)
5837 + self.row_height.max(height_limit.min).min(height_limit.max);
5838 ColoredRange {
5839 start: start_y,
5840 end: end_y,
5841 color: range.color,
5842 }
5843 })
5844 .peekable();
5845
5846 let mut quads = Vec::new();
5847 while let Some(mut pixel_range) = pixel_ranges.next() {
5848 while let Some(next_pixel_range) = pixel_ranges.peek() {
5849 if pixel_range.end >= next_pixel_range.start - px(1.0)
5850 && pixel_range.color == next_pixel_range.color
5851 {
5852 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
5853 pixel_ranges.next();
5854 } else {
5855 break;
5856 }
5857 }
5858
5859 let bounds = Bounds::from_corners(
5860 point(x_range.start, pixel_range.start),
5861 point(x_range.end, pixel_range.end),
5862 );
5863 quads.push(quad(
5864 bounds,
5865 Corners::default(),
5866 pixel_range.color,
5867 Edges::default(),
5868 Hsla::transparent_black(),
5869 ));
5870 }
5871
5872 quads
5873 }
5874}
5875
5876struct CreaseTrailerLayout {
5877 element: AnyElement,
5878 bounds: Bounds<Pixels>,
5879}
5880
5881struct PositionMap {
5882 size: Size<Pixels>,
5883 line_height: Pixels,
5884 scroll_pixel_position: gpui::Point<Pixels>,
5885 scroll_max: gpui::Point<f32>,
5886 em_width: Pixels,
5887 em_advance: Pixels,
5888 line_layouts: Vec<LineWithInvisibles>,
5889 snapshot: EditorSnapshot,
5890}
5891
5892#[derive(Debug, Copy, Clone)]
5893pub struct PointForPosition {
5894 pub previous_valid: DisplayPoint,
5895 pub next_valid: DisplayPoint,
5896 pub exact_unclipped: DisplayPoint,
5897 pub column_overshoot_after_line_end: u32,
5898}
5899
5900impl PointForPosition {
5901 pub fn as_valid(&self) -> Option<DisplayPoint> {
5902 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
5903 Some(self.previous_valid)
5904 } else {
5905 None
5906 }
5907 }
5908}
5909
5910impl PositionMap {
5911 fn point_for_position(
5912 &self,
5913 text_bounds: Bounds<Pixels>,
5914 position: gpui::Point<Pixels>,
5915 ) -> PointForPosition {
5916 let scroll_position = self.snapshot.scroll_position();
5917 let position = position - text_bounds.origin;
5918 let y = position.y.max(px(0.)).min(self.size.height);
5919 let x = position.x + (scroll_position.x * self.em_width);
5920 let row = ((y / self.line_height) + scroll_position.y) as u32;
5921
5922 let (column, x_overshoot_after_line_end) = if let Some(line) = self
5923 .line_layouts
5924 .get(row as usize - scroll_position.y as usize)
5925 {
5926 if let Some(ix) = line.index_for_x(x) {
5927 (ix as u32, px(0.))
5928 } else {
5929 (line.len as u32, px(0.).max(x - line.width))
5930 }
5931 } else {
5932 (0, x)
5933 };
5934
5935 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
5936 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
5937 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
5938
5939 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
5940 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
5941 PointForPosition {
5942 previous_valid,
5943 next_valid,
5944 exact_unclipped,
5945 column_overshoot_after_line_end,
5946 }
5947 }
5948}
5949
5950struct BlockLayout {
5951 id: BlockId,
5952 row: Option<DisplayRow>,
5953 element: AnyElement,
5954 available_space: Size<AvailableSpace>,
5955 style: BlockStyle,
5956}
5957
5958fn layout_line(
5959 row: DisplayRow,
5960 snapshot: &EditorSnapshot,
5961 style: &EditorStyle,
5962 text_width: Pixels,
5963 cx: &mut WindowContext,
5964) -> LineWithInvisibles {
5965 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
5966 LineWithInvisibles::from_chunks(
5967 chunks,
5968 &style.text,
5969 MAX_LINE_LEN,
5970 1,
5971 &[],
5972 snapshot.mode,
5973 text_width,
5974 cx,
5975 )
5976 .pop()
5977 .unwrap()
5978}
5979
5980#[derive(Debug)]
5981pub struct IndentGuideLayout {
5982 origin: gpui::Point<Pixels>,
5983 length: Pixels,
5984 single_indent_width: Pixels,
5985 depth: u32,
5986 active: bool,
5987 settings: IndentGuideSettings,
5988}
5989
5990pub struct CursorLayout {
5991 origin: gpui::Point<Pixels>,
5992 block_width: Pixels,
5993 line_height: Pixels,
5994 color: Hsla,
5995 shape: CursorShape,
5996 block_text: Option<ShapedLine>,
5997 cursor_name: Option<AnyElement>,
5998}
5999
6000#[derive(Debug)]
6001pub struct CursorName {
6002 string: SharedString,
6003 color: Hsla,
6004 is_top_row: bool,
6005}
6006
6007impl CursorLayout {
6008 pub fn new(
6009 origin: gpui::Point<Pixels>,
6010 block_width: Pixels,
6011 line_height: Pixels,
6012 color: Hsla,
6013 shape: CursorShape,
6014 block_text: Option<ShapedLine>,
6015 ) -> CursorLayout {
6016 CursorLayout {
6017 origin,
6018 block_width,
6019 line_height,
6020 color,
6021 shape,
6022 block_text,
6023 cursor_name: None,
6024 }
6025 }
6026
6027 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6028 Bounds {
6029 origin: self.origin + origin,
6030 size: size(self.block_width, self.line_height),
6031 }
6032 }
6033
6034 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6035 match self.shape {
6036 CursorShape::Bar => Bounds {
6037 origin: self.origin + origin,
6038 size: size(px(2.0), self.line_height),
6039 },
6040 CursorShape::Block | CursorShape::Hollow => Bounds {
6041 origin: self.origin + origin,
6042 size: size(self.block_width, self.line_height),
6043 },
6044 CursorShape::Underscore => Bounds {
6045 origin: self.origin
6046 + origin
6047 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
6048 size: size(self.block_width, px(2.0)),
6049 },
6050 }
6051 }
6052
6053 pub fn layout(
6054 &mut self,
6055 origin: gpui::Point<Pixels>,
6056 cursor_name: Option<CursorName>,
6057 cx: &mut WindowContext,
6058 ) {
6059 if let Some(cursor_name) = cursor_name {
6060 let bounds = self.bounds(origin);
6061 let text_size = self.line_height / 1.5;
6062
6063 let name_origin = if cursor_name.is_top_row {
6064 point(bounds.right() - px(1.), bounds.top())
6065 } else {
6066 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
6067 };
6068 let mut name_element = div()
6069 .bg(self.color)
6070 .text_size(text_size)
6071 .px_0p5()
6072 .line_height(text_size + px(2.))
6073 .text_color(cursor_name.color)
6074 .child(cursor_name.string.clone())
6075 .into_any_element();
6076
6077 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
6078
6079 self.cursor_name = Some(name_element);
6080 }
6081 }
6082
6083 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
6084 let bounds = self.bounds(origin);
6085
6086 //Draw background or border quad
6087 let cursor = if matches!(self.shape, CursorShape::Hollow) {
6088 outline(bounds, self.color)
6089 } else {
6090 fill(bounds, self.color)
6091 };
6092
6093 if let Some(name) = &mut self.cursor_name {
6094 name.paint(cx);
6095 }
6096
6097 cx.paint_quad(cursor);
6098
6099 if let Some(block_text) = &self.block_text {
6100 block_text
6101 .paint(self.origin + origin, self.line_height, cx)
6102 .log_err();
6103 }
6104 }
6105
6106 pub fn shape(&self) -> CursorShape {
6107 self.shape
6108 }
6109}
6110
6111#[derive(Debug)]
6112pub struct HighlightedRange {
6113 pub start_y: Pixels,
6114 pub line_height: Pixels,
6115 pub lines: Vec<HighlightedRangeLine>,
6116 pub color: Hsla,
6117 pub corner_radius: Pixels,
6118}
6119
6120#[derive(Debug)]
6121pub struct HighlightedRangeLine {
6122 pub start_x: Pixels,
6123 pub end_x: Pixels,
6124}
6125
6126impl HighlightedRange {
6127 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
6128 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
6129 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
6130 self.paint_lines(
6131 self.start_y + self.line_height,
6132 &self.lines[1..],
6133 bounds,
6134 cx,
6135 );
6136 } else {
6137 self.paint_lines(self.start_y, &self.lines, bounds, cx);
6138 }
6139 }
6140
6141 fn paint_lines(
6142 &self,
6143 start_y: Pixels,
6144 lines: &[HighlightedRangeLine],
6145 _bounds: Bounds<Pixels>,
6146 cx: &mut WindowContext,
6147 ) {
6148 if lines.is_empty() {
6149 return;
6150 }
6151
6152 let first_line = lines.first().unwrap();
6153 let last_line = lines.last().unwrap();
6154
6155 let first_top_left = point(first_line.start_x, start_y);
6156 let first_top_right = point(first_line.end_x, start_y);
6157
6158 let curve_height = point(Pixels::ZERO, self.corner_radius);
6159 let curve_width = |start_x: Pixels, end_x: Pixels| {
6160 let max = (end_x - start_x) / 2.;
6161 let width = if max < self.corner_radius {
6162 max
6163 } else {
6164 self.corner_radius
6165 };
6166
6167 point(width, Pixels::ZERO)
6168 };
6169
6170 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
6171 let mut path = gpui::Path::new(first_top_right - top_curve_width);
6172 path.curve_to(first_top_right + curve_height, first_top_right);
6173
6174 let mut iter = lines.iter().enumerate().peekable();
6175 while let Some((ix, line)) = iter.next() {
6176 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
6177
6178 if let Some((_, next_line)) = iter.peek() {
6179 let next_top_right = point(next_line.end_x, bottom_right.y);
6180
6181 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
6182 Ordering::Equal => {
6183 path.line_to(bottom_right);
6184 }
6185 Ordering::Less => {
6186 let curve_width = curve_width(next_top_right.x, bottom_right.x);
6187 path.line_to(bottom_right - curve_height);
6188 if self.corner_radius > Pixels::ZERO {
6189 path.curve_to(bottom_right - curve_width, bottom_right);
6190 }
6191 path.line_to(next_top_right + curve_width);
6192 if self.corner_radius > Pixels::ZERO {
6193 path.curve_to(next_top_right + curve_height, next_top_right);
6194 }
6195 }
6196 Ordering::Greater => {
6197 let curve_width = curve_width(bottom_right.x, next_top_right.x);
6198 path.line_to(bottom_right - curve_height);
6199 if self.corner_radius > Pixels::ZERO {
6200 path.curve_to(bottom_right + curve_width, bottom_right);
6201 }
6202 path.line_to(next_top_right - curve_width);
6203 if self.corner_radius > Pixels::ZERO {
6204 path.curve_to(next_top_right + curve_height, next_top_right);
6205 }
6206 }
6207 }
6208 } else {
6209 let curve_width = curve_width(line.start_x, line.end_x);
6210 path.line_to(bottom_right - curve_height);
6211 if self.corner_radius > Pixels::ZERO {
6212 path.curve_to(bottom_right - curve_width, bottom_right);
6213 }
6214
6215 let bottom_left = point(line.start_x, bottom_right.y);
6216 path.line_to(bottom_left + curve_width);
6217 if self.corner_radius > Pixels::ZERO {
6218 path.curve_to(bottom_left - curve_height, bottom_left);
6219 }
6220 }
6221 }
6222
6223 if first_line.start_x > last_line.start_x {
6224 let curve_width = curve_width(last_line.start_x, first_line.start_x);
6225 let second_top_left = point(last_line.start_x, start_y + self.line_height);
6226 path.line_to(second_top_left + curve_height);
6227 if self.corner_radius > Pixels::ZERO {
6228 path.curve_to(second_top_left + curve_width, second_top_left);
6229 }
6230 let first_bottom_left = point(first_line.start_x, second_top_left.y);
6231 path.line_to(first_bottom_left - curve_width);
6232 if self.corner_radius > Pixels::ZERO {
6233 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
6234 }
6235 }
6236
6237 path.line_to(first_top_left + curve_height);
6238 if self.corner_radius > Pixels::ZERO {
6239 path.curve_to(first_top_left + top_curve_width, first_top_left);
6240 }
6241 path.line_to(first_top_right - top_curve_width);
6242
6243 cx.paint_path(path, self.color);
6244 }
6245}
6246
6247pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6248 (delta.pow(1.5) / 100.0).into()
6249}
6250
6251fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6252 (delta.pow(1.2) / 300.0).into()
6253}
6254
6255pub fn register_action<T: Action>(
6256 view: &View<Editor>,
6257 cx: &mut WindowContext,
6258 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
6259) {
6260 let view = view.clone();
6261 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
6262 let action = action.downcast_ref().unwrap();
6263 if phase == DispatchPhase::Bubble {
6264 view.update(cx, |editor, cx| {
6265 listener(editor, action, cx);
6266 })
6267 }
6268 })
6269}
6270
6271fn compute_auto_height_layout(
6272 editor: &mut Editor,
6273 max_lines: usize,
6274 max_line_number_width: Pixels,
6275 known_dimensions: Size<Option<Pixels>>,
6276 available_width: AvailableSpace,
6277 cx: &mut ViewContext<Editor>,
6278) -> Option<Size<Pixels>> {
6279 let width = known_dimensions.width.or({
6280 if let AvailableSpace::Definite(available_width) = available_width {
6281 Some(available_width)
6282 } else {
6283 None
6284 }
6285 })?;
6286 if let Some(height) = known_dimensions.height {
6287 return Some(size(width, height));
6288 }
6289
6290 let style = editor.style.as_ref().unwrap();
6291 let font_id = cx.text_system().resolve_font(&style.text.font());
6292 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6293 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6294 let em_width = cx
6295 .text_system()
6296 .typographic_bounds(font_id, font_size, 'm')
6297 .unwrap()
6298 .size
6299 .width;
6300
6301 let mut snapshot = editor.snapshot(cx);
6302 let gutter_dimensions =
6303 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
6304
6305 editor.gutter_dimensions = gutter_dimensions;
6306 let text_width = width - gutter_dimensions.width;
6307 let overscroll = size(em_width, px(0.));
6308
6309 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
6310 if editor.set_wrap_width(Some(editor_width), cx) {
6311 snapshot = editor.snapshot(cx);
6312 }
6313
6314 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
6315 let height = scroll_height
6316 .max(line_height)
6317 .min(line_height * max_lines as f32);
6318
6319 Some(size(width, height))
6320}
6321
6322#[cfg(test)]
6323mod tests {
6324 use super::*;
6325 use crate::{
6326 display_map::{BlockDisposition, BlockProperties},
6327 editor_tests::{init_test, update_test_language_settings},
6328 Editor, MultiBuffer,
6329 };
6330 use gpui::{TestAppContext, VisualTestContext};
6331 use language::language_settings;
6332 use log::info;
6333 use std::num::NonZeroU32;
6334 use ui::Context;
6335 use util::test::sample_text;
6336
6337 #[gpui::test]
6338 fn test_shape_line_numbers(cx: &mut TestAppContext) {
6339 init_test(cx, |_| {});
6340 let window = cx.add_window(|cx| {
6341 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6342 Editor::new(EditorMode::Full, buffer, None, true, cx)
6343 });
6344
6345 let editor = window.root(cx).unwrap();
6346 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6347 let element = EditorElement::new(&editor, style);
6348 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
6349
6350 let layouts = cx
6351 .update_window(*window, |_, cx| {
6352 element.layout_line_numbers(
6353 DisplayRow(0)..DisplayRow(6),
6354 (0..6).map(MultiBufferRow).map(Some),
6355 &Default::default(),
6356 Some(DisplayPoint::new(DisplayRow(0), 0)),
6357 &snapshot,
6358 cx,
6359 )
6360 })
6361 .unwrap();
6362 assert_eq!(layouts.len(), 6);
6363
6364 let relative_rows = window
6365 .update(cx, |editor, cx| {
6366 let snapshot = editor.snapshot(cx);
6367 element.calculate_relative_line_numbers(
6368 &snapshot,
6369 &(DisplayRow(0)..DisplayRow(6)),
6370 Some(DisplayRow(3)),
6371 )
6372 })
6373 .unwrap();
6374 assert_eq!(relative_rows[&DisplayRow(0)], 3);
6375 assert_eq!(relative_rows[&DisplayRow(1)], 2);
6376 assert_eq!(relative_rows[&DisplayRow(2)], 1);
6377 // current line has no relative number
6378 assert_eq!(relative_rows[&DisplayRow(4)], 1);
6379 assert_eq!(relative_rows[&DisplayRow(5)], 2);
6380
6381 // works if cursor is before screen
6382 let relative_rows = window
6383 .update(cx, |editor, cx| {
6384 let snapshot = editor.snapshot(cx);
6385 element.calculate_relative_line_numbers(
6386 &snapshot,
6387 &(DisplayRow(3)..DisplayRow(6)),
6388 Some(DisplayRow(1)),
6389 )
6390 })
6391 .unwrap();
6392 assert_eq!(relative_rows.len(), 3);
6393 assert_eq!(relative_rows[&DisplayRow(3)], 2);
6394 assert_eq!(relative_rows[&DisplayRow(4)], 3);
6395 assert_eq!(relative_rows[&DisplayRow(5)], 4);
6396
6397 // works if cursor is after screen
6398 let relative_rows = window
6399 .update(cx, |editor, cx| {
6400 let snapshot = editor.snapshot(cx);
6401 element.calculate_relative_line_numbers(
6402 &snapshot,
6403 &(DisplayRow(0)..DisplayRow(3)),
6404 Some(DisplayRow(6)),
6405 )
6406 })
6407 .unwrap();
6408 assert_eq!(relative_rows.len(), 3);
6409 assert_eq!(relative_rows[&DisplayRow(0)], 5);
6410 assert_eq!(relative_rows[&DisplayRow(1)], 4);
6411 assert_eq!(relative_rows[&DisplayRow(2)], 3);
6412 }
6413
6414 #[gpui::test]
6415 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
6416 init_test(cx, |_| {});
6417
6418 let window = cx.add_window(|cx| {
6419 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
6420 Editor::new(EditorMode::Full, buffer, None, true, cx)
6421 });
6422 let cx = &mut VisualTestContext::from_window(*window, cx);
6423 let editor = window.root(cx).unwrap();
6424 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6425
6426 window
6427 .update(cx, |editor, cx| {
6428 editor.cursor_shape = CursorShape::Block;
6429 editor.change_selections(None, cx, |s| {
6430 s.select_ranges([
6431 Point::new(0, 0)..Point::new(1, 0),
6432 Point::new(3, 2)..Point::new(3, 3),
6433 Point::new(5, 6)..Point::new(6, 0),
6434 ]);
6435 });
6436 })
6437 .unwrap();
6438
6439 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6440 EditorElement::new(&editor, style)
6441 });
6442
6443 assert_eq!(state.selections.len(), 1);
6444 let local_selections = &state.selections[0].1;
6445 assert_eq!(local_selections.len(), 3);
6446 // moves cursor back one line
6447 assert_eq!(
6448 local_selections[0].head,
6449 DisplayPoint::new(DisplayRow(0), 6)
6450 );
6451 assert_eq!(
6452 local_selections[0].range,
6453 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
6454 );
6455
6456 // moves cursor back one column
6457 assert_eq!(
6458 local_selections[1].range,
6459 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
6460 );
6461 assert_eq!(
6462 local_selections[1].head,
6463 DisplayPoint::new(DisplayRow(3), 2)
6464 );
6465
6466 // leaves cursor on the max point
6467 assert_eq!(
6468 local_selections[2].range,
6469 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
6470 );
6471 assert_eq!(
6472 local_selections[2].head,
6473 DisplayPoint::new(DisplayRow(6), 0)
6474 );
6475
6476 // active lines does not include 1 (even though the range of the selection does)
6477 assert_eq!(
6478 state.active_rows.keys().cloned().collect::<Vec<_>>(),
6479 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
6480 );
6481
6482 // multi-buffer support
6483 // in DisplayPoint coordinates, this is what we're dealing with:
6484 // 0: [[file
6485 // 1: header
6486 // 2: section]]
6487 // 3: aaaaaa
6488 // 4: bbbbbb
6489 // 5: cccccc
6490 // 6:
6491 // 7: [[footer]]
6492 // 8: [[header]]
6493 // 9: ffffff
6494 // 10: gggggg
6495 // 11: hhhhhh
6496 // 12:
6497 // 13: [[footer]]
6498 // 14: [[file
6499 // 15: header
6500 // 16: section]]
6501 // 17: bbbbbb
6502 // 18: cccccc
6503 // 19: dddddd
6504 // 20: [[footer]]
6505 let window = cx.add_window(|cx| {
6506 let buffer = MultiBuffer::build_multi(
6507 [
6508 (
6509 &(sample_text(8, 6, 'a') + "\n"),
6510 vec![
6511 Point::new(0, 0)..Point::new(3, 0),
6512 Point::new(4, 0)..Point::new(7, 0),
6513 ],
6514 ),
6515 (
6516 &(sample_text(8, 6, 'a') + "\n"),
6517 vec![Point::new(1, 0)..Point::new(3, 0)],
6518 ),
6519 ],
6520 cx,
6521 );
6522 Editor::new(EditorMode::Full, buffer, None, true, cx)
6523 });
6524 let editor = window.root(cx).unwrap();
6525 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6526 let _state = window.update(cx, |editor, cx| {
6527 editor.cursor_shape = CursorShape::Block;
6528 editor.change_selections(None, cx, |s| {
6529 s.select_display_ranges([
6530 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
6531 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
6532 ]);
6533 });
6534 });
6535
6536 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6537 EditorElement::new(&editor, style)
6538 });
6539 assert_eq!(state.selections.len(), 1);
6540 let local_selections = &state.selections[0].1;
6541 assert_eq!(local_selections.len(), 2);
6542
6543 // moves cursor on excerpt boundary back a line
6544 // and doesn't allow selection to bleed through
6545 assert_eq!(
6546 local_selections[0].range,
6547 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
6548 );
6549 assert_eq!(
6550 local_selections[0].head,
6551 DisplayPoint::new(DisplayRow(6), 0)
6552 );
6553 // moves cursor on buffer boundary back two lines
6554 // and doesn't allow selection to bleed through
6555 assert_eq!(
6556 local_selections[1].range,
6557 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
6558 );
6559 assert_eq!(
6560 local_selections[1].head,
6561 DisplayPoint::new(DisplayRow(12), 0)
6562 );
6563 }
6564
6565 #[gpui::test]
6566 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
6567 init_test(cx, |_| {});
6568
6569 let window = cx.add_window(|cx| {
6570 let buffer = MultiBuffer::build_simple("", cx);
6571 Editor::new(EditorMode::Full, buffer, None, true, cx)
6572 });
6573 let cx = &mut VisualTestContext::from_window(*window, cx);
6574 let editor = window.root(cx).unwrap();
6575 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6576 window
6577 .update(cx, |editor, cx| {
6578 editor.set_placeholder_text("hello", cx);
6579 editor.insert_blocks(
6580 [BlockProperties {
6581 style: BlockStyle::Fixed,
6582 disposition: BlockDisposition::Above,
6583 height: 3,
6584 position: Anchor::min(),
6585 render: Box::new(|cx| div().h(3. * cx.line_height()).into_any()),
6586 priority: 0,
6587 }],
6588 None,
6589 cx,
6590 );
6591
6592 // Blur the editor so that it displays placeholder text.
6593 cx.blur();
6594 })
6595 .unwrap();
6596
6597 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6598 EditorElement::new(&editor, style)
6599 });
6600 assert_eq!(state.position_map.line_layouts.len(), 4);
6601 assert_eq!(
6602 state
6603 .line_numbers
6604 .iter()
6605 .map(Option::is_some)
6606 .collect::<Vec<_>>(),
6607 &[false, false, false, true]
6608 );
6609 }
6610
6611 #[gpui::test]
6612 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
6613 const TAB_SIZE: u32 = 4;
6614
6615 let input_text = "\t \t|\t| a b";
6616 let expected_invisibles = vec![
6617 Invisible::Tab {
6618 line_start_offset: 0,
6619 line_end_offset: TAB_SIZE as usize,
6620 },
6621 Invisible::Whitespace {
6622 line_offset: TAB_SIZE as usize,
6623 },
6624 Invisible::Tab {
6625 line_start_offset: TAB_SIZE as usize + 1,
6626 line_end_offset: TAB_SIZE as usize * 2,
6627 },
6628 Invisible::Tab {
6629 line_start_offset: TAB_SIZE as usize * 2 + 1,
6630 line_end_offset: TAB_SIZE as usize * 3,
6631 },
6632 Invisible::Whitespace {
6633 line_offset: TAB_SIZE as usize * 3 + 1,
6634 },
6635 Invisible::Whitespace {
6636 line_offset: TAB_SIZE as usize * 3 + 3,
6637 },
6638 ];
6639 assert_eq!(
6640 expected_invisibles.len(),
6641 input_text
6642 .chars()
6643 .filter(|initial_char| initial_char.is_whitespace())
6644 .count(),
6645 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6646 );
6647
6648 init_test(cx, |s| {
6649 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6650 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
6651 });
6652
6653 let actual_invisibles =
6654 collect_invisibles_from_new_editor(cx, EditorMode::Full, input_text, px(500.0));
6655
6656 assert_eq!(expected_invisibles, actual_invisibles);
6657 }
6658
6659 #[gpui::test]
6660 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
6661 init_test(cx, |s| {
6662 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6663 s.defaults.tab_size = NonZeroU32::new(4);
6664 });
6665
6666 for editor_mode_without_invisibles in [
6667 EditorMode::SingleLine { auto_width: false },
6668 EditorMode::AutoHeight { max_lines: 100 },
6669 ] {
6670 let invisibles = collect_invisibles_from_new_editor(
6671 cx,
6672 editor_mode_without_invisibles,
6673 "\t\t\t| | a b",
6674 px(500.0),
6675 );
6676 assert!(invisibles.is_empty(),
6677 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
6678 }
6679 }
6680
6681 #[gpui::test]
6682 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
6683 let tab_size = 4;
6684 let input_text = "a\tbcd ".repeat(9);
6685 let repeated_invisibles = [
6686 Invisible::Tab {
6687 line_start_offset: 1,
6688 line_end_offset: tab_size as usize,
6689 },
6690 Invisible::Whitespace {
6691 line_offset: tab_size as usize + 3,
6692 },
6693 Invisible::Whitespace {
6694 line_offset: tab_size as usize + 4,
6695 },
6696 Invisible::Whitespace {
6697 line_offset: tab_size as usize + 5,
6698 },
6699 Invisible::Whitespace {
6700 line_offset: tab_size as usize + 6,
6701 },
6702 Invisible::Whitespace {
6703 line_offset: tab_size as usize + 7,
6704 },
6705 ];
6706 let expected_invisibles = std::iter::once(repeated_invisibles)
6707 .cycle()
6708 .take(9)
6709 .flatten()
6710 .collect::<Vec<_>>();
6711 assert_eq!(
6712 expected_invisibles.len(),
6713 input_text
6714 .chars()
6715 .filter(|initial_char| initial_char.is_whitespace())
6716 .count(),
6717 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6718 );
6719 info!("Expected invisibles: {expected_invisibles:?}");
6720
6721 init_test(cx, |_| {});
6722
6723 // Put the same string with repeating whitespace pattern into editors of various size,
6724 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
6725 let resize_step = 10.0;
6726 let mut editor_width = 200.0;
6727 while editor_width <= 1000.0 {
6728 update_test_language_settings(cx, |s| {
6729 s.defaults.tab_size = NonZeroU32::new(tab_size);
6730 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6731 s.defaults.preferred_line_length = Some(editor_width as u32);
6732 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
6733 });
6734
6735 let actual_invisibles = collect_invisibles_from_new_editor(
6736 cx,
6737 EditorMode::Full,
6738 &input_text,
6739 px(editor_width),
6740 );
6741
6742 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
6743 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
6744 let mut i = 0;
6745 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
6746 i = actual_index;
6747 match expected_invisibles.get(i) {
6748 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
6749 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
6750 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
6751 _ => {
6752 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
6753 }
6754 },
6755 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
6756 }
6757 }
6758 let missing_expected_invisibles = &expected_invisibles[i + 1..];
6759 assert!(
6760 missing_expected_invisibles.is_empty(),
6761 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
6762 );
6763
6764 editor_width += resize_step;
6765 }
6766 }
6767
6768 fn collect_invisibles_from_new_editor(
6769 cx: &mut TestAppContext,
6770 editor_mode: EditorMode,
6771 input_text: &str,
6772 editor_width: Pixels,
6773 ) -> Vec<Invisible> {
6774 info!(
6775 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
6776 editor_width.0
6777 );
6778 let window = cx.add_window(|cx| {
6779 let buffer = MultiBuffer::build_simple(input_text, cx);
6780 Editor::new(editor_mode, buffer, None, true, cx)
6781 });
6782 let cx = &mut VisualTestContext::from_window(*window, cx);
6783 let editor = window.root(cx).unwrap();
6784 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6785 window
6786 .update(cx, |editor, cx| {
6787 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
6788 editor.set_wrap_width(Some(editor_width), cx);
6789 })
6790 .unwrap();
6791 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6792 EditorElement::new(&editor, style)
6793 });
6794 state
6795 .position_map
6796 .line_layouts
6797 .iter()
6798 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
6799 .cloned()
6800 .collect()
6801 }
6802}