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::rewrap);
220 register_action(view, cx, Editor::cut);
221 register_action(view, cx, Editor::copy);
222 register_action(view, cx, Editor::paste);
223 register_action(view, cx, Editor::undo);
224 register_action(view, cx, Editor::redo);
225 register_action(view, cx, Editor::move_page_up);
226 register_action(view, cx, Editor::move_page_down);
227 register_action(view, cx, Editor::next_screen);
228 register_action(view, cx, Editor::scroll_cursor_top);
229 register_action(view, cx, Editor::scroll_cursor_center);
230 register_action(view, cx, Editor::scroll_cursor_bottom);
231 register_action(view, cx, Editor::scroll_cursor_center_top_bottom);
232 register_action(view, cx, |editor, _: &LineDown, cx| {
233 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
234 });
235 register_action(view, cx, |editor, _: &LineUp, cx| {
236 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
237 });
238 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
239 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
240 });
241 register_action(view, cx, |editor, HandleInput(text): &HandleInput, cx| {
242 if text.is_empty() {
243 return;
244 }
245 editor.handle_input(text, cx);
246 });
247 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
248 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
249 });
250 register_action(view, cx, |editor, _: &PageDown, cx| {
251 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
252 });
253 register_action(view, cx, |editor, _: &PageUp, cx| {
254 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
255 });
256 register_action(view, cx, Editor::move_to_previous_word_start);
257 register_action(view, cx, Editor::move_to_previous_subword_start);
258 register_action(view, cx, Editor::move_to_next_word_end);
259 register_action(view, cx, Editor::move_to_next_subword_end);
260 register_action(view, cx, Editor::move_to_beginning_of_line);
261 register_action(view, cx, Editor::move_to_end_of_line);
262 register_action(view, cx, Editor::move_to_start_of_paragraph);
263 register_action(view, cx, Editor::move_to_end_of_paragraph);
264 register_action(view, cx, Editor::move_to_beginning);
265 register_action(view, cx, Editor::move_to_end);
266 register_action(view, cx, Editor::select_up);
267 register_action(view, cx, Editor::select_down);
268 register_action(view, cx, Editor::select_left);
269 register_action(view, cx, Editor::select_right);
270 register_action(view, cx, Editor::select_to_previous_word_start);
271 register_action(view, cx, Editor::select_to_previous_subword_start);
272 register_action(view, cx, Editor::select_to_next_word_end);
273 register_action(view, cx, Editor::select_to_next_subword_end);
274 register_action(view, cx, Editor::select_to_beginning_of_line);
275 register_action(view, cx, Editor::select_to_end_of_line);
276 register_action(view, cx, Editor::select_to_start_of_paragraph);
277 register_action(view, cx, Editor::select_to_end_of_paragraph);
278 register_action(view, cx, Editor::select_to_beginning);
279 register_action(view, cx, Editor::select_to_end);
280 register_action(view, cx, Editor::select_all);
281 register_action(view, cx, |editor, action, cx| {
282 editor.select_all_matches(action, cx).log_err();
283 });
284 register_action(view, cx, Editor::select_line);
285 register_action(view, cx, Editor::split_selection_into_lines);
286 register_action(view, cx, Editor::add_selection_above);
287 register_action(view, cx, Editor::add_selection_below);
288 register_action(view, cx, |editor, action, cx| {
289 editor.select_next(action, cx).log_err();
290 });
291 register_action(view, cx, |editor, action, cx| {
292 editor.select_previous(action, cx).log_err();
293 });
294 register_action(view, cx, Editor::toggle_comments);
295 register_action(view, cx, Editor::select_larger_syntax_node);
296 register_action(view, cx, Editor::select_smaller_syntax_node);
297 register_action(view, cx, Editor::select_enclosing_symbol);
298 register_action(view, cx, Editor::move_to_enclosing_bracket);
299 register_action(view, cx, Editor::undo_selection);
300 register_action(view, cx, Editor::redo_selection);
301 if !view.read(cx).is_singleton(cx) {
302 register_action(view, cx, Editor::expand_excerpts);
303 register_action(view, cx, Editor::expand_excerpts_up);
304 register_action(view, cx, Editor::expand_excerpts_down);
305 }
306 register_action(view, cx, Editor::go_to_diagnostic);
307 register_action(view, cx, Editor::go_to_prev_diagnostic);
308 register_action(view, cx, Editor::go_to_hunk);
309 register_action(view, cx, Editor::go_to_prev_hunk);
310 register_action(view, cx, |editor, a, cx| {
311 editor.go_to_definition(a, cx).detach_and_log_err(cx);
312 });
313 register_action(view, cx, |editor, a, cx| {
314 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
315 });
316 register_action(view, cx, |editor, a, cx| {
317 editor.go_to_declaration(a, cx).detach_and_log_err(cx);
318 });
319 register_action(view, cx, |editor, a, cx| {
320 editor.go_to_declaration_split(a, cx).detach_and_log_err(cx);
321 });
322 register_action(view, cx, |editor, a, cx| {
323 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
324 });
325 register_action(view, cx, |editor, a, cx| {
326 editor
327 .go_to_implementation_split(a, cx)
328 .detach_and_log_err(cx);
329 });
330 register_action(view, cx, |editor, a, cx| {
331 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
332 });
333 register_action(view, cx, |editor, a, cx| {
334 editor
335 .go_to_type_definition_split(a, cx)
336 .detach_and_log_err(cx);
337 });
338 register_action(view, cx, Editor::open_url);
339 register_action(view, cx, Editor::open_file);
340 register_action(view, cx, Editor::fold);
341 register_action(view, cx, Editor::fold_at);
342 register_action(view, cx, Editor::unfold_lines);
343 register_action(view, cx, Editor::unfold_at);
344 register_action(view, cx, Editor::fold_selected_ranges);
345 register_action(view, cx, Editor::show_completions);
346 register_action(view, cx, Editor::toggle_code_actions);
347 register_action(view, cx, Editor::open_excerpts);
348 register_action(view, cx, Editor::open_excerpts_in_split);
349 register_action(view, cx, Editor::open_proposed_changes_editor);
350 register_action(view, cx, Editor::toggle_soft_wrap);
351 register_action(view, cx, Editor::toggle_tab_bar);
352 register_action(view, cx, Editor::toggle_line_numbers);
353 register_action(view, cx, Editor::toggle_relative_line_numbers);
354 register_action(view, cx, Editor::toggle_indent_guides);
355 register_action(view, cx, Editor::toggle_inlay_hints);
356 register_action(view, cx, Editor::toggle_inline_completions);
357 register_action(view, cx, hover_popover::hover);
358 register_action(view, cx, Editor::reveal_in_finder);
359 register_action(view, cx, Editor::copy_path);
360 register_action(view, cx, Editor::copy_relative_path);
361 register_action(view, cx, Editor::copy_highlight_json);
362 register_action(view, cx, Editor::copy_permalink_to_line);
363 register_action(view, cx, Editor::open_permalink_to_line);
364 register_action(view, cx, Editor::copy_file_location);
365 register_action(view, cx, Editor::toggle_git_blame);
366 register_action(view, cx, Editor::toggle_git_blame_inline);
367 register_action(view, cx, Editor::toggle_hunk_diff);
368 register_action(view, cx, Editor::expand_all_hunk_diffs);
369 register_action(view, cx, |editor, action, cx| {
370 if let Some(task) = editor.format(action, cx) {
371 task.detach_and_log_err(cx);
372 } else {
373 cx.propagate();
374 }
375 });
376 register_action(view, cx, Editor::restart_language_server);
377 register_action(view, cx, Editor::cancel_language_server_work);
378 register_action(view, cx, Editor::show_character_palette);
379 register_action(view, cx, |editor, action, cx| {
380 if let Some(task) = editor.confirm_completion(action, cx) {
381 task.detach_and_log_err(cx);
382 } else {
383 cx.propagate();
384 }
385 });
386 register_action(view, cx, |editor, action, cx| {
387 if let Some(task) = editor.compose_completion(action, cx) {
388 task.detach_and_log_err(cx);
389 } else {
390 cx.propagate();
391 }
392 });
393 register_action(view, cx, |editor, action, cx| {
394 if let Some(task) = editor.confirm_code_action(action, cx) {
395 task.detach_and_log_err(cx);
396 } else {
397 cx.propagate();
398 }
399 });
400 register_action(view, cx, |editor, action, cx| {
401 if let Some(task) = editor.rename(action, cx) {
402 task.detach_and_log_err(cx);
403 } else {
404 cx.propagate();
405 }
406 });
407 register_action(view, cx, |editor, action, cx| {
408 if let Some(task) = editor.confirm_rename(action, cx) {
409 task.detach_and_log_err(cx);
410 } else {
411 cx.propagate();
412 }
413 });
414 register_action(view, cx, |editor, action, cx| {
415 if let Some(task) = editor.find_all_references(action, cx) {
416 task.detach_and_log_err(cx);
417 } else {
418 cx.propagate();
419 }
420 });
421 register_action(view, cx, Editor::show_signature_help);
422 register_action(view, cx, Editor::next_inline_completion);
423 register_action(view, cx, Editor::previous_inline_completion);
424 register_action(view, cx, Editor::show_inline_completion);
425 register_action(view, cx, Editor::context_menu_first);
426 register_action(view, cx, Editor::context_menu_prev);
427 register_action(view, cx, Editor::context_menu_next);
428 register_action(view, cx, Editor::context_menu_last);
429 register_action(view, cx, Editor::display_cursor_names);
430 register_action(view, cx, Editor::unique_lines_case_insensitive);
431 register_action(view, cx, Editor::unique_lines_case_sensitive);
432 register_action(view, cx, Editor::accept_partial_inline_completion);
433 register_action(view, cx, Editor::accept_inline_completion);
434 register_action(view, cx, Editor::revert_file);
435 register_action(view, cx, Editor::revert_selected_hunks);
436 register_action(view, cx, Editor::open_active_item_in_terminal)
437 }
438
439 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
440 let position_map = layout.position_map.clone();
441 cx.on_key_event({
442 let editor = self.editor.clone();
443 let text_hitbox = layout.text_hitbox.clone();
444 move |event: &ModifiersChangedEvent, phase, cx| {
445 if phase != DispatchPhase::Bubble {
446 return;
447 }
448 editor.update(cx, |editor, cx| {
449 if editor.hover_state.focused(cx) {
450 return;
451 }
452 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
453 })
454 }
455 });
456 }
457
458 fn modifiers_changed(
459 editor: &mut Editor,
460 event: &ModifiersChangedEvent,
461 position_map: &PositionMap,
462 text_hitbox: &Hitbox,
463 cx: &mut ViewContext<Editor>,
464 ) {
465 let mouse_position = cx.mouse_position();
466 if !text_hitbox.is_hovered(cx) {
467 return;
468 }
469
470 editor.update_hovered_link(
471 position_map.point_for_position(text_hitbox.bounds, mouse_position),
472 &position_map.snapshot,
473 event.modifiers,
474 cx,
475 )
476 }
477
478 fn mouse_left_down(
479 editor: &mut Editor,
480 event: &MouseDownEvent,
481 hovered_hunk: Option<HoveredHunk>,
482 position_map: &PositionMap,
483 text_hitbox: &Hitbox,
484 gutter_hitbox: &Hitbox,
485 cx: &mut ViewContext<Editor>,
486 ) {
487 if cx.default_prevented() {
488 return;
489 }
490
491 let mut click_count = event.click_count;
492 let mut modifiers = event.modifiers;
493
494 if let Some(hovered_hunk) = hovered_hunk {
495 if modifiers.control || modifiers.platform {
496 editor.toggle_hovered_hunk(&hovered_hunk, cx);
497 } else {
498 let display_range = hovered_hunk
499 .multi_buffer_range
500 .clone()
501 .to_display_points(&position_map.snapshot);
502 let hunk_bounds = Self::diff_hunk_bounds(
503 &position_map.snapshot,
504 position_map.line_height,
505 gutter_hitbox.bounds,
506 &DisplayDiffHunk::Unfolded {
507 diff_base_byte_range: hovered_hunk.diff_base_byte_range.clone(),
508 display_row_range: display_range.start.row()..display_range.end.row(),
509 multi_buffer_range: hovered_hunk.multi_buffer_range.clone(),
510 status: hovered_hunk.status,
511 },
512 );
513 if hunk_bounds.contains(&event.position) {
514 editor.open_hunk_context_menu(hovered_hunk, event.position, cx);
515 }
516 }
517 cx.notify();
518 return;
519 } else if gutter_hitbox.is_hovered(cx) {
520 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
521 } else if !text_hitbox.is_hovered(cx) {
522 return;
523 }
524
525 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
526 match EditorSettings::get_global(cx).double_click_in_multibuffer {
527 DoubleClickInMultibuffer::Select => {
528 // do nothing special on double click, all selection logic is below
529 }
530 DoubleClickInMultibuffer::Open => {
531 if modifiers.alt {
532 // if double click is made with alt, pretend it's a regular double click without opening and alt,
533 // and run the selection logic.
534 modifiers.alt = false;
535 } else {
536 // if double click is made without alt, open the corresponding excerp
537 editor.open_excerpts(&OpenExcerpts, cx);
538 return;
539 }
540 }
541 }
542 }
543
544 let point_for_position =
545 position_map.point_for_position(text_hitbox.bounds, event.position);
546 let position = point_for_position.previous_valid;
547 if modifiers.shift && modifiers.alt {
548 editor.select(
549 SelectPhase::BeginColumnar {
550 position,
551 reset: false,
552 goal_column: point_for_position.exact_unclipped.column(),
553 },
554 cx,
555 );
556 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
557 {
558 editor.select(
559 SelectPhase::Extend {
560 position,
561 click_count,
562 },
563 cx,
564 );
565 } else {
566 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
567 let multi_cursor_modifier = match multi_cursor_setting {
568 MultiCursorModifier::Alt => modifiers.alt,
569 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
570 };
571 editor.select(
572 SelectPhase::Begin {
573 position,
574 add: multi_cursor_modifier,
575 click_count,
576 },
577 cx,
578 );
579 }
580
581 cx.stop_propagation();
582 }
583
584 fn mouse_right_down(
585 editor: &mut Editor,
586 event: &MouseDownEvent,
587 position_map: &PositionMap,
588 text_hitbox: &Hitbox,
589 cx: &mut ViewContext<Editor>,
590 ) {
591 if !text_hitbox.is_hovered(cx) {
592 return;
593 }
594 let point_for_position =
595 position_map.point_for_position(text_hitbox.bounds, event.position);
596 mouse_context_menu::deploy_context_menu(
597 editor,
598 event.position,
599 point_for_position.previous_valid,
600 cx,
601 );
602 cx.stop_propagation();
603 }
604
605 fn mouse_middle_down(
606 editor: &mut Editor,
607 event: &MouseDownEvent,
608 position_map: &PositionMap,
609 text_hitbox: &Hitbox,
610 cx: &mut ViewContext<Editor>,
611 ) {
612 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
613 return;
614 }
615
616 let point_for_position =
617 position_map.point_for_position(text_hitbox.bounds, event.position);
618 let position = point_for_position.previous_valid;
619
620 editor.select(
621 SelectPhase::BeginColumnar {
622 position,
623 reset: true,
624 goal_column: point_for_position.exact_unclipped.column(),
625 },
626 cx,
627 );
628 }
629
630 fn mouse_up(
631 editor: &mut Editor,
632 event: &MouseUpEvent,
633 position_map: &PositionMap,
634 text_hitbox: &Hitbox,
635 cx: &mut ViewContext<Editor>,
636 ) {
637 let end_selection = editor.has_pending_selection();
638 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
639
640 if end_selection {
641 editor.select(SelectPhase::End, cx);
642 }
643
644 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
645 let multi_cursor_modifier = match multi_cursor_setting {
646 MultiCursorModifier::Alt => event.modifiers.secondary(),
647 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
648 };
649
650 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
651 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
652 editor.handle_click_hovered_link(point, event.modifiers, cx);
653
654 cx.stop_propagation();
655 } else if end_selection && pending_nonempty_selections {
656 cx.stop_propagation();
657 } else if cfg!(target_os = "linux")
658 && event.button == MouseButton::Middle
659 && (!text_hitbox.is_hovered(cx) || editor.read_only(cx))
660 {
661 return;
662 }
663 }
664
665 fn mouse_dragged(
666 editor: &mut Editor,
667 event: &MouseMoveEvent,
668 position_map: &PositionMap,
669 text_bounds: Bounds<Pixels>,
670 cx: &mut ViewContext<Editor>,
671 ) {
672 if !editor.has_pending_selection() {
673 return;
674 }
675
676 let point_for_position = position_map.point_for_position(text_bounds, event.position);
677 let mut scroll_delta = gpui::Point::<f32>::default();
678 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
679 let top = text_bounds.origin.y + vertical_margin;
680 let bottom = text_bounds.lower_left().y - vertical_margin;
681 if event.position.y < top {
682 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
683 }
684 if event.position.y > bottom {
685 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
686 }
687
688 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
689 let left = text_bounds.origin.x + horizontal_margin;
690 let right = text_bounds.upper_right().x - horizontal_margin;
691 if event.position.x < left {
692 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
693 }
694 if event.position.x > right {
695 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
696 }
697
698 editor.select(
699 SelectPhase::Update {
700 position: point_for_position.previous_valid,
701 goal_column: point_for_position.exact_unclipped.column(),
702 scroll_delta,
703 },
704 cx,
705 );
706 }
707
708 fn mouse_moved(
709 editor: &mut Editor,
710 event: &MouseMoveEvent,
711 position_map: &PositionMap,
712 text_hitbox: &Hitbox,
713 gutter_hitbox: &Hitbox,
714 cx: &mut ViewContext<Editor>,
715 ) {
716 let modifiers = event.modifiers;
717 let gutter_hovered = gutter_hitbox.is_hovered(cx);
718 editor.set_gutter_hovered(gutter_hovered, cx);
719
720 // Don't trigger hover popover if mouse is hovering over context menu
721 if text_hitbox.is_hovered(cx) {
722 let point_for_position =
723 position_map.point_for_position(text_hitbox.bounds, event.position);
724
725 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
726
727 if let Some(point) = point_for_position.as_valid() {
728 let anchor = position_map
729 .snapshot
730 .buffer_snapshot
731 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
732 hover_at(editor, Some(anchor), cx);
733 Self::update_visible_cursor(editor, point, position_map, cx);
734 } else {
735 hover_at(editor, None, cx);
736 }
737 } else {
738 editor.hide_hovered_link(cx);
739 hover_at(editor, None, cx);
740 if gutter_hovered {
741 cx.stop_propagation();
742 }
743 }
744 }
745
746 fn update_visible_cursor(
747 editor: &mut Editor,
748 point: DisplayPoint,
749 position_map: &PositionMap,
750 cx: &mut ViewContext<Editor>,
751 ) {
752 let snapshot = &position_map.snapshot;
753 let Some(hub) = editor.collaboration_hub() else {
754 return;
755 };
756 let start = snapshot.display_snapshot.clip_point(
757 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
758 Bias::Left,
759 );
760 let end = snapshot.display_snapshot.clip_point(
761 DisplayPoint::new(
762 point.row(),
763 (point.column() + 1).min(snapshot.line_len(point.row())),
764 ),
765 Bias::Right,
766 );
767
768 let range = snapshot
769 .buffer_snapshot
770 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
771 ..snapshot
772 .buffer_snapshot
773 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
774
775 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
776 return;
777 };
778 let key = crate::HoveredCursor {
779 replica_id: selection.replica_id,
780 selection_id: selection.selection.id,
781 };
782 editor.hovered_cursors.insert(
783 key.clone(),
784 cx.spawn(|editor, mut cx| async move {
785 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
786 editor
787 .update(&mut cx, |editor, cx| {
788 editor.hovered_cursors.remove(&key);
789 cx.notify();
790 })
791 .ok();
792 }),
793 );
794 cx.notify()
795 }
796
797 fn layout_selections(
798 &self,
799 start_anchor: Anchor,
800 end_anchor: Anchor,
801 snapshot: &EditorSnapshot,
802 start_row: DisplayRow,
803 end_row: DisplayRow,
804 cx: &mut WindowContext,
805 ) -> (
806 Vec<(PlayerColor, Vec<SelectionLayout>)>,
807 BTreeMap<DisplayRow, bool>,
808 Option<DisplayPoint>,
809 ) {
810 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
811 let mut active_rows = BTreeMap::new();
812 let mut newest_selection_head = None;
813 let editor = self.editor.read(cx);
814
815 if editor.show_local_selections {
816 let mut local_selections: Vec<Selection<Point>> = editor
817 .selections
818 .disjoint_in_range(start_anchor..end_anchor, cx);
819 local_selections.extend(editor.selections.pending(cx));
820 let mut layouts = Vec::new();
821 let newest = editor.selections.newest(cx);
822 for selection in local_selections.drain(..) {
823 let is_empty = selection.start == selection.end;
824 let is_newest = selection == newest;
825
826 let layout = SelectionLayout::new(
827 selection,
828 editor.selections.line_mode,
829 editor.cursor_shape,
830 &snapshot.display_snapshot,
831 is_newest,
832 editor.leader_peer_id.is_none(),
833 None,
834 );
835 if is_newest {
836 newest_selection_head = Some(layout.head);
837 }
838
839 for row in cmp::max(layout.active_rows.start.0, start_row.0)
840 ..=cmp::min(layout.active_rows.end.0, end_row.0)
841 {
842 let contains_non_empty_selection =
843 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
844 *contains_non_empty_selection |= !is_empty;
845 }
846 layouts.push(layout);
847 }
848
849 let player = if editor.read_only(cx) {
850 cx.theme().players().read_only()
851 } else {
852 self.style.local_player
853 };
854
855 selections.push((player, layouts));
856 }
857
858 if let Some(collaboration_hub) = &editor.collaboration_hub {
859 // When following someone, render the local selections in their color.
860 if let Some(leader_id) = editor.leader_peer_id {
861 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
862 if let Some(participant_index) = collaboration_hub
863 .user_participant_indices(cx)
864 .get(&collaborator.user_id)
865 {
866 if let Some((local_selection_style, _)) = selections.first_mut() {
867 *local_selection_style = cx
868 .theme()
869 .players()
870 .color_for_participant(participant_index.0);
871 }
872 }
873 }
874 }
875
876 let mut remote_selections = HashMap::default();
877 for selection in snapshot.remote_selections_in_range(
878 &(start_anchor..end_anchor),
879 collaboration_hub.as_ref(),
880 cx,
881 ) {
882 let selection_style = Self::get_participant_color(selection.participant_index, cx);
883
884 // Don't re-render the leader's selections, since the local selections
885 // match theirs.
886 if Some(selection.peer_id) == editor.leader_peer_id {
887 continue;
888 }
889 let key = HoveredCursor {
890 replica_id: selection.replica_id,
891 selection_id: selection.selection.id,
892 };
893
894 let is_shown =
895 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
896
897 remote_selections
898 .entry(selection.replica_id)
899 .or_insert((selection_style, Vec::new()))
900 .1
901 .push(SelectionLayout::new(
902 selection.selection,
903 selection.line_mode,
904 selection.cursor_shape,
905 &snapshot.display_snapshot,
906 false,
907 false,
908 if is_shown { selection.user_name } else { None },
909 ));
910 }
911
912 selections.extend(remote_selections.into_values());
913 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
914 let player = if editor.read_only(cx) {
915 cx.theme().players().read_only()
916 } else {
917 self.style.local_player
918 };
919 let layouts = snapshot
920 .buffer_snapshot
921 .selections_in_range(&(start_anchor..end_anchor), true)
922 .map(move |(_, line_mode, cursor_shape, selection)| {
923 SelectionLayout::new(
924 selection,
925 line_mode,
926 cursor_shape,
927 &snapshot.display_snapshot,
928 false,
929 false,
930 None,
931 )
932 })
933 .collect::<Vec<_>>();
934 selections.push((player, layouts));
935 }
936 (selections, active_rows, newest_selection_head)
937 }
938
939 fn collect_cursors(
940 &self,
941 snapshot: &EditorSnapshot,
942 cx: &mut WindowContext,
943 ) -> Vec<(DisplayPoint, Hsla)> {
944 let editor = self.editor.read(cx);
945 let mut cursors = Vec::new();
946 let mut skip_local = false;
947 let mut add_cursor = |anchor: Anchor, color| {
948 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
949 };
950 // Remote cursors
951 if let Some(collaboration_hub) = &editor.collaboration_hub {
952 for remote_selection in snapshot.remote_selections_in_range(
953 &(Anchor::min()..Anchor::max()),
954 collaboration_hub.deref(),
955 cx,
956 ) {
957 let color = Self::get_participant_color(remote_selection.participant_index, cx);
958 add_cursor(remote_selection.selection.head(), color.cursor);
959 if Some(remote_selection.peer_id) == editor.leader_peer_id {
960 skip_local = true;
961 }
962 }
963 }
964 // Local cursors
965 if !skip_local {
966 let color = cx.theme().players().local().cursor;
967 editor.selections.disjoint.iter().for_each(|selection| {
968 add_cursor(selection.head(), color);
969 });
970 if let Some(ref selection) = editor.selections.pending_anchor() {
971 add_cursor(selection.head(), color);
972 }
973 }
974 cursors
975 }
976
977 #[allow(clippy::too_many_arguments)]
978 fn layout_visible_cursors(
979 &self,
980 snapshot: &EditorSnapshot,
981 selections: &[(PlayerColor, Vec<SelectionLayout>)],
982 visible_display_row_range: Range<DisplayRow>,
983 line_layouts: &[LineWithInvisibles],
984 text_hitbox: &Hitbox,
985 content_origin: gpui::Point<Pixels>,
986 scroll_position: gpui::Point<f32>,
987 scroll_pixel_position: gpui::Point<Pixels>,
988 line_height: Pixels,
989 em_width: Pixels,
990 autoscroll_containing_element: bool,
991 cx: &mut WindowContext,
992 ) -> Vec<CursorLayout> {
993 let mut autoscroll_bounds = None;
994 let cursor_layouts = self.editor.update(cx, |editor, cx| {
995 let mut cursors = Vec::new();
996 for (player_color, selections) in selections {
997 for selection in selections {
998 let cursor_position = selection.head;
999
1000 let in_range = visible_display_row_range.contains(&cursor_position.row());
1001 if (selection.is_local && !editor.show_local_cursors(cx)) || !in_range {
1002 continue;
1003 }
1004
1005 let cursor_row_layout = &line_layouts
1006 [cursor_position.row().minus(visible_display_row_range.start) as usize];
1007 let cursor_column = cursor_position.column() as usize;
1008
1009 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1010 let mut block_width =
1011 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1012 if block_width == Pixels::ZERO {
1013 block_width = em_width;
1014 }
1015 let block_text = if let CursorShape::Block = selection.cursor_shape {
1016 snapshot.display_chars_at(cursor_position).next().and_then(
1017 |(character, _)| {
1018 let text = if character == '\n' {
1019 SharedString::from(" ")
1020 } else {
1021 SharedString::from(character.to_string())
1022 };
1023 let len = text.len();
1024
1025 let font = cursor_row_layout
1026 .font_id_for_index(cursor_column)
1027 .and_then(|cursor_font_id| {
1028 cx.text_system().get_font_for_id(cursor_font_id)
1029 })
1030 .unwrap_or(self.style.text.font());
1031
1032 cx.text_system()
1033 .shape_line(
1034 text,
1035 cursor_row_layout.font_size,
1036 &[TextRun {
1037 len,
1038 font,
1039 color: self.style.background,
1040 background_color: None,
1041 strikethrough: None,
1042 underline: None,
1043 }],
1044 )
1045 .log_err()
1046 },
1047 )
1048 } else {
1049 None
1050 };
1051
1052 let x = cursor_character_x - scroll_pixel_position.x;
1053 let y = (cursor_position.row().as_f32()
1054 - scroll_pixel_position.y / line_height)
1055 * line_height;
1056 if selection.is_newest {
1057 editor.pixel_position_of_newest_cursor = Some(point(
1058 text_hitbox.origin.x + x + block_width / 2.,
1059 text_hitbox.origin.y + y + line_height / 2.,
1060 ));
1061
1062 if autoscroll_containing_element {
1063 let top = text_hitbox.origin.y
1064 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1065 * line_height;
1066 let left = text_hitbox.origin.x
1067 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1068 .max(0.)
1069 * em_width;
1070
1071 let bottom = text_hitbox.origin.y
1072 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1073 * line_height;
1074 let right = text_hitbox.origin.x
1075 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1076 * em_width;
1077
1078 autoscroll_bounds =
1079 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1080 }
1081 }
1082
1083 let mut cursor = CursorLayout {
1084 color: player_color.cursor,
1085 block_width,
1086 origin: point(x, y),
1087 line_height,
1088 shape: selection.cursor_shape,
1089 block_text,
1090 cursor_name: None,
1091 };
1092 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1093 string: name,
1094 color: self.style.background,
1095 is_top_row: cursor_position.row().0 == 0,
1096 });
1097 cursor.layout(content_origin, cursor_name, cx);
1098 cursors.push(cursor);
1099 }
1100 }
1101 cursors
1102 });
1103
1104 if let Some(bounds) = autoscroll_bounds {
1105 cx.request_autoscroll(bounds);
1106 }
1107
1108 cursor_layouts
1109 }
1110
1111 fn layout_scrollbar(
1112 &self,
1113 snapshot: &EditorSnapshot,
1114 bounds: Bounds<Pixels>,
1115 scroll_position: gpui::Point<f32>,
1116 rows_per_page: f32,
1117 non_visible_cursors: bool,
1118 cx: &mut WindowContext,
1119 ) -> Option<ScrollbarLayout> {
1120 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1121 let show_scrollbars = match scrollbar_settings.show {
1122 ShowScrollbar::Auto => {
1123 let editor = self.editor.read(cx);
1124 let is_singleton = editor.is_singleton(cx);
1125 // Git
1126 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1127 ||
1128 // Buffer Search Results
1129 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1130 ||
1131 // Selected Symbol Occurrences
1132 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1133 ||
1134 // Diagnostics
1135 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
1136 ||
1137 // Cursors out of sight
1138 non_visible_cursors
1139 ||
1140 // Scrollmanager
1141 editor.scroll_manager.scrollbars_visible()
1142 }
1143 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1144 ShowScrollbar::Always => true,
1145 ShowScrollbar::Never => false,
1146 };
1147 if snapshot.mode != EditorMode::Full {
1148 return None;
1149 }
1150
1151 let visible_row_range = scroll_position.y..scroll_position.y + rows_per_page;
1152
1153 // If a drag took place after we started dragging the scrollbar,
1154 // cancel the scrollbar drag.
1155 if cx.has_active_drag() {
1156 self.editor.update(cx, |editor, cx| {
1157 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1158 });
1159 }
1160
1161 let track_bounds = Bounds::from_corners(
1162 point(self.scrollbar_left(&bounds), bounds.origin.y),
1163 point(bounds.lower_right().x, bounds.lower_left().y),
1164 );
1165
1166 let settings = EditorSettings::get_global(cx);
1167 let scroll_beyond_last_line: f32 = match settings.scroll_beyond_last_line {
1168 ScrollBeyondLastLine::OnePage => rows_per_page,
1169 ScrollBeyondLastLine::Off => 1.0,
1170 ScrollBeyondLastLine::VerticalScrollMargin => 1.0 + settings.vertical_scroll_margin,
1171 };
1172 let total_rows =
1173 (snapshot.max_point().row().as_f32() + scroll_beyond_last_line).max(rows_per_page);
1174 let height = bounds.size.height;
1175 let px_per_row = height / total_rows;
1176 let thumb_height = (rows_per_page * px_per_row).max(ScrollbarLayout::MIN_THUMB_HEIGHT);
1177 let row_height = (height - thumb_height) / (total_rows - rows_per_page).max(0.);
1178
1179 Some(ScrollbarLayout {
1180 hitbox: cx.insert_hitbox(track_bounds, false),
1181 visible_row_range,
1182 row_height,
1183 visible: show_scrollbars,
1184 thumb_height,
1185 })
1186 }
1187
1188 #[allow(clippy::too_many_arguments)]
1189 fn prepaint_gutter_fold_toggles(
1190 &self,
1191 toggles: &mut [Option<AnyElement>],
1192 line_height: Pixels,
1193 gutter_dimensions: &GutterDimensions,
1194 gutter_settings: crate::editor_settings::Gutter,
1195 scroll_pixel_position: gpui::Point<Pixels>,
1196 gutter_hitbox: &Hitbox,
1197 cx: &mut WindowContext,
1198 ) {
1199 for (ix, fold_indicator) in toggles.iter_mut().enumerate() {
1200 if let Some(fold_indicator) = fold_indicator {
1201 debug_assert!(gutter_settings.folds);
1202 let available_space = size(
1203 AvailableSpace::MinContent,
1204 AvailableSpace::Definite(line_height * 0.55),
1205 );
1206 let fold_indicator_size = fold_indicator.layout_as_root(available_space, cx);
1207
1208 let position = point(
1209 gutter_dimensions.width - gutter_dimensions.right_padding,
1210 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1211 );
1212 let centering_offset = point(
1213 (gutter_dimensions.fold_area_width() - fold_indicator_size.width) / 2.,
1214 (line_height - fold_indicator_size.height) / 2.,
1215 );
1216 let origin = gutter_hitbox.origin + position + centering_offset;
1217 fold_indicator.prepaint_as_root(origin, available_space, cx);
1218 }
1219 }
1220 }
1221
1222 #[allow(clippy::too_many_arguments)]
1223 fn prepaint_crease_trailers(
1224 &self,
1225 trailers: Vec<Option<AnyElement>>,
1226 lines: &[LineWithInvisibles],
1227 line_height: Pixels,
1228 content_origin: gpui::Point<Pixels>,
1229 scroll_pixel_position: gpui::Point<Pixels>,
1230 em_width: Pixels,
1231 cx: &mut WindowContext,
1232 ) -> Vec<Option<CreaseTrailerLayout>> {
1233 trailers
1234 .into_iter()
1235 .enumerate()
1236 .map(|(ix, element)| {
1237 let mut element = element?;
1238 let available_space = size(
1239 AvailableSpace::MinContent,
1240 AvailableSpace::Definite(line_height),
1241 );
1242 let size = element.layout_as_root(available_space, cx);
1243
1244 let line = &lines[ix];
1245 let padding = if line.width == Pixels::ZERO {
1246 Pixels::ZERO
1247 } else {
1248 4. * em_width
1249 };
1250 let position = point(
1251 scroll_pixel_position.x + line.width + padding,
1252 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1253 );
1254 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1255 let origin = content_origin + position + centering_offset;
1256 element.prepaint_as_root(origin, available_space, cx);
1257 Some(CreaseTrailerLayout {
1258 element,
1259 bounds: Bounds::new(origin, size),
1260 })
1261 })
1262 .collect()
1263 }
1264
1265 // Folds contained in a hunk are ignored apart from shrinking visual size
1266 // If a fold contains any hunks then that fold line is marked as modified
1267 fn layout_gutter_git_hunks(
1268 &self,
1269 line_height: Pixels,
1270 gutter_hitbox: &Hitbox,
1271 display_rows: Range<DisplayRow>,
1272 snapshot: &EditorSnapshot,
1273 cx: &mut WindowContext,
1274 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1275 let buffer_snapshot = &snapshot.buffer_snapshot;
1276
1277 let buffer_start_row = MultiBufferRow(
1278 DisplayPoint::new(display_rows.start, 0)
1279 .to_point(snapshot)
1280 .row,
1281 );
1282 let buffer_end_row = MultiBufferRow(
1283 DisplayPoint::new(display_rows.end, 0)
1284 .to_point(snapshot)
1285 .row,
1286 );
1287
1288 let git_gutter_setting = ProjectSettings::get_global(cx)
1289 .git
1290 .git_gutter
1291 .unwrap_or_default();
1292 let display_hunks = buffer_snapshot
1293 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1294 .map(|hunk| diff_hunk_to_display(&hunk, snapshot))
1295 .dedup()
1296 .map(|hunk| match git_gutter_setting {
1297 GitGutterSetting::TrackedFiles => {
1298 let hitbox = match hunk {
1299 DisplayDiffHunk::Unfolded { .. } => {
1300 let hunk_bounds = Self::diff_hunk_bounds(
1301 snapshot,
1302 line_height,
1303 gutter_hitbox.bounds,
1304 &hunk,
1305 );
1306 Some(cx.insert_hitbox(hunk_bounds, true))
1307 }
1308 DisplayDiffHunk::Folded { .. } => None,
1309 };
1310 (hunk, hitbox)
1311 }
1312 GitGutterSetting::Hide => (hunk, None),
1313 })
1314 .collect();
1315 display_hunks
1316 }
1317
1318 #[allow(clippy::too_many_arguments)]
1319 fn layout_inline_blame(
1320 &self,
1321 display_row: DisplayRow,
1322 display_snapshot: &DisplaySnapshot,
1323 line_layout: &LineWithInvisibles,
1324 crease_trailer: Option<&CreaseTrailerLayout>,
1325 em_width: Pixels,
1326 content_origin: gpui::Point<Pixels>,
1327 scroll_pixel_position: gpui::Point<Pixels>,
1328 line_height: Pixels,
1329 cx: &mut WindowContext,
1330 ) -> Option<AnyElement> {
1331 if !self
1332 .editor
1333 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1334 {
1335 return None;
1336 }
1337
1338 let workspace = self
1339 .editor
1340 .read(cx)
1341 .workspace
1342 .as_ref()
1343 .map(|(w, _)| w.clone());
1344
1345 let display_point = DisplayPoint::new(display_row, 0);
1346 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1347
1348 let blame = self.editor.read(cx).blame.clone()?;
1349 let blame_entry = blame
1350 .update(cx, |blame, cx| {
1351 blame.blame_for_rows([Some(buffer_row)], cx).next()
1352 })
1353 .flatten()?;
1354
1355 let mut element =
1356 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1357
1358 let start_y = content_origin.y
1359 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1360
1361 let start_x = {
1362 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1363
1364 let line_end = if let Some(crease_trailer) = crease_trailer {
1365 crease_trailer.bounds.right()
1366 } else {
1367 content_origin.x - scroll_pixel_position.x + line_layout.width
1368 };
1369 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1370
1371 let min_column_in_pixels = ProjectSettings::get_global(cx)
1372 .git
1373 .inline_blame
1374 .and_then(|settings| settings.min_column)
1375 .map(|col| self.column_pixels(col as usize, cx))
1376 .unwrap_or(px(0.));
1377 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1378
1379 cmp::max(padded_line_end, min_start)
1380 };
1381
1382 let absolute_offset = point(start_x, start_y);
1383 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1384
1385 Some(element)
1386 }
1387
1388 #[allow(clippy::too_many_arguments)]
1389 fn layout_blame_entries(
1390 &self,
1391 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1392 em_width: Pixels,
1393 scroll_position: gpui::Point<f32>,
1394 line_height: Pixels,
1395 gutter_hitbox: &Hitbox,
1396 max_width: Option<Pixels>,
1397 cx: &mut WindowContext,
1398 ) -> Option<Vec<AnyElement>> {
1399 if !self
1400 .editor
1401 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1402 {
1403 return None;
1404 }
1405
1406 let blame = self.editor.read(cx).blame.clone()?;
1407 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1408 blame.blame_for_rows(buffer_rows, cx).collect()
1409 });
1410
1411 let width = if let Some(max_width) = max_width {
1412 AvailableSpace::Definite(max_width)
1413 } else {
1414 AvailableSpace::MaxContent
1415 };
1416 let scroll_top = scroll_position.y * line_height;
1417 let start_x = em_width * 1;
1418
1419 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1420
1421 let shaped_lines = blamed_rows
1422 .into_iter()
1423 .enumerate()
1424 .flat_map(|(ix, blame_entry)| {
1425 if let Some(blame_entry) = blame_entry {
1426 let mut element = render_blame_entry(
1427 ix,
1428 &blame,
1429 blame_entry,
1430 &self.style,
1431 &mut last_used_color,
1432 self.editor.clone(),
1433 cx,
1434 );
1435
1436 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1437 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1438
1439 element.prepaint_as_root(
1440 absolute_offset,
1441 size(width, AvailableSpace::MinContent),
1442 cx,
1443 );
1444
1445 Some(element)
1446 } else {
1447 None
1448 }
1449 })
1450 .collect();
1451
1452 Some(shaped_lines)
1453 }
1454
1455 #[allow(clippy::too_many_arguments)]
1456 fn layout_indent_guides(
1457 &self,
1458 content_origin: gpui::Point<Pixels>,
1459 text_origin: gpui::Point<Pixels>,
1460 visible_buffer_range: Range<MultiBufferRow>,
1461 scroll_pixel_position: gpui::Point<Pixels>,
1462 line_height: Pixels,
1463 snapshot: &DisplaySnapshot,
1464 cx: &mut WindowContext,
1465 ) -> Option<Vec<IndentGuideLayout>> {
1466 let indent_guides = self.editor.update(cx, |editor, cx| {
1467 editor.indent_guides(visible_buffer_range, snapshot, cx)
1468 })?;
1469
1470 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1471 editor
1472 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1473 .unwrap_or_default()
1474 });
1475
1476 Some(
1477 indent_guides
1478 .into_iter()
1479 .enumerate()
1480 .filter_map(|(i, indent_guide)| {
1481 let single_indent_width =
1482 self.column_pixels(indent_guide.tab_size as usize, cx);
1483 let total_width = single_indent_width * indent_guide.depth as f32;
1484 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1485 if start_x >= text_origin.x {
1486 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1487 indent_guide.multibuffer_row_range.clone(),
1488 line_height,
1489 snapshot,
1490 );
1491
1492 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1493
1494 Some(IndentGuideLayout {
1495 origin: point(start_x, start_y),
1496 length,
1497 single_indent_width,
1498 depth: indent_guide.depth,
1499 active: active_indent_guide_indices.contains(&i),
1500 settings: indent_guide.settings,
1501 })
1502 } else {
1503 None
1504 }
1505 })
1506 .collect(),
1507 )
1508 }
1509
1510 fn calculate_indent_guide_bounds(
1511 row_range: Range<MultiBufferRow>,
1512 line_height: Pixels,
1513 snapshot: &DisplaySnapshot,
1514 ) -> (gpui::Pixels, gpui::Pixels) {
1515 let start_point = Point::new(row_range.start.0, 0);
1516 let end_point = Point::new(row_range.end.0, 0);
1517
1518 let row_range = start_point.to_display_point(snapshot).row()
1519 ..end_point.to_display_point(snapshot).row();
1520
1521 let mut prev_line = start_point;
1522 prev_line.row = prev_line.row.saturating_sub(1);
1523 let prev_line = prev_line.to_display_point(snapshot).row();
1524
1525 let mut cons_line = end_point;
1526 cons_line.row += 1;
1527 let cons_line = cons_line.to_display_point(snapshot).row();
1528
1529 let mut offset_y = row_range.start.0 as f32 * line_height;
1530 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1531
1532 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1533 if row_range.end == cons_line {
1534 length += line_height;
1535 }
1536
1537 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1538 // we want to extend the indent guide to the start of the block.
1539 let mut block_height = 0;
1540 let mut block_offset = 0;
1541 let mut found_excerpt_header = false;
1542 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1543 if matches!(block, Block::ExcerptHeader { .. }) {
1544 found_excerpt_header = true;
1545 break;
1546 }
1547 block_offset += block.height();
1548 block_height += block.height();
1549 }
1550 if !found_excerpt_header {
1551 offset_y -= block_offset as f32 * line_height;
1552 length += block_height as f32 * line_height;
1553 }
1554
1555 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1556 // we want to ensure that the indent guide stops before the excerpt header.
1557 let mut block_height = 0;
1558 let mut found_excerpt_header = false;
1559 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1560 if matches!(block, Block::ExcerptHeader { .. }) {
1561 found_excerpt_header = true;
1562 }
1563 block_height += block.height();
1564 }
1565 if found_excerpt_header {
1566 length -= block_height as f32 * line_height;
1567 }
1568
1569 (offset_y, length)
1570 }
1571
1572 #[allow(clippy::too_many_arguments)]
1573 fn layout_run_indicators(
1574 &self,
1575 line_height: Pixels,
1576 range: Range<DisplayRow>,
1577 scroll_pixel_position: gpui::Point<Pixels>,
1578 gutter_dimensions: &GutterDimensions,
1579 gutter_hitbox: &Hitbox,
1580 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1581 snapshot: &EditorSnapshot,
1582 cx: &mut WindowContext,
1583 ) -> Vec<AnyElement> {
1584 self.editor.update(cx, |editor, cx| {
1585 let active_task_indicator_row =
1586 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1587 deployed_from_indicator,
1588 actions,
1589 ..
1590 })) = editor.context_menu.read().as_ref()
1591 {
1592 actions
1593 .tasks
1594 .as_ref()
1595 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1596 .or(*deployed_from_indicator)
1597 } else {
1598 None
1599 };
1600
1601 editor
1602 .tasks
1603 .iter()
1604 .filter_map(|(_, tasks)| {
1605 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1606 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1607 let display_row = multibuffer_point.to_display_point(snapshot).row();
1608 if range.start > display_row || range.end < display_row {
1609 return None;
1610 }
1611 if snapshot.is_line_folded(multibuffer_row) {
1612 return None;
1613 }
1614 let button = editor.render_run_indicator(
1615 &self.style,
1616 Some(display_row) == active_task_indicator_row,
1617 display_row,
1618 cx,
1619 );
1620
1621 let button = prepaint_gutter_button(
1622 button,
1623 display_row,
1624 line_height,
1625 gutter_dimensions,
1626 scroll_pixel_position,
1627 gutter_hitbox,
1628 rows_with_hunk_bounds,
1629 cx,
1630 );
1631 Some(button)
1632 })
1633 .collect_vec()
1634 })
1635 }
1636
1637 #[allow(clippy::too_many_arguments)]
1638 fn layout_code_actions_indicator(
1639 &self,
1640 line_height: Pixels,
1641 newest_selection_head: DisplayPoint,
1642 scroll_pixel_position: gpui::Point<Pixels>,
1643 gutter_dimensions: &GutterDimensions,
1644 gutter_hitbox: &Hitbox,
1645 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1646 cx: &mut WindowContext,
1647 ) -> Option<AnyElement> {
1648 let mut active = false;
1649 let mut button = None;
1650 let row = newest_selection_head.row();
1651 self.editor.update(cx, |editor, cx| {
1652 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1653 deployed_from_indicator,
1654 ..
1655 })) = editor.context_menu.read().as_ref()
1656 {
1657 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1658 };
1659 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1660 });
1661
1662 let button = prepaint_gutter_button(
1663 button?,
1664 row,
1665 line_height,
1666 gutter_dimensions,
1667 scroll_pixel_position,
1668 gutter_hitbox,
1669 rows_with_hunk_bounds,
1670 cx,
1671 );
1672
1673 Some(button)
1674 }
1675
1676 fn get_participant_color(
1677 participant_index: Option<ParticipantIndex>,
1678 cx: &WindowContext,
1679 ) -> PlayerColor {
1680 if let Some(index) = participant_index {
1681 cx.theme().players().color_for_participant(index.0)
1682 } else {
1683 cx.theme().players().absent()
1684 }
1685 }
1686
1687 fn calculate_relative_line_numbers(
1688 &self,
1689 snapshot: &EditorSnapshot,
1690 rows: &Range<DisplayRow>,
1691 relative_to: Option<DisplayRow>,
1692 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1693 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1694 let Some(relative_to) = relative_to else {
1695 return relative_rows;
1696 };
1697
1698 let start = rows.start.min(relative_to);
1699 let end = rows.end.max(relative_to);
1700
1701 let buffer_rows = snapshot
1702 .buffer_rows(start)
1703 .take(1 + end.minus(start) as usize)
1704 .collect::<Vec<_>>();
1705
1706 let head_idx = relative_to.minus(start);
1707 let mut delta = 1;
1708 let mut i = head_idx + 1;
1709 while i < buffer_rows.len() as u32 {
1710 if buffer_rows[i as usize].is_some() {
1711 if rows.contains(&DisplayRow(i + start.0)) {
1712 relative_rows.insert(DisplayRow(i + start.0), delta);
1713 }
1714 delta += 1;
1715 }
1716 i += 1;
1717 }
1718 delta = 1;
1719 i = head_idx.min(buffer_rows.len() as u32 - 1);
1720 while i > 0 && buffer_rows[i as usize].is_none() {
1721 i -= 1;
1722 }
1723
1724 while i > 0 {
1725 i -= 1;
1726 if buffer_rows[i as usize].is_some() {
1727 if rows.contains(&DisplayRow(i + start.0)) {
1728 relative_rows.insert(DisplayRow(i + start.0), delta);
1729 }
1730 delta += 1;
1731 }
1732 }
1733
1734 relative_rows
1735 }
1736
1737 fn layout_line_numbers(
1738 &self,
1739 rows: Range<DisplayRow>,
1740 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1741 active_rows: &BTreeMap<DisplayRow, bool>,
1742 newest_selection_head: Option<DisplayPoint>,
1743 snapshot: &EditorSnapshot,
1744 cx: &mut WindowContext,
1745 ) -> Vec<Option<ShapedLine>> {
1746 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
1747 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
1748 });
1749 if !include_line_numbers {
1750 return Vec::new();
1751 }
1752
1753 let editor = self.editor.read(cx);
1754 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1755 let newest = editor.selections.newest::<Point>(cx);
1756 SelectionLayout::new(
1757 newest,
1758 editor.selections.line_mode,
1759 editor.cursor_shape,
1760 &snapshot.display_snapshot,
1761 true,
1762 true,
1763 None,
1764 )
1765 .head
1766 });
1767 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1768
1769 let is_relative = editor.should_use_relative_line_numbers(cx);
1770 let relative_to = if is_relative {
1771 Some(newest_selection_head.row())
1772 } else {
1773 None
1774 };
1775 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
1776 let mut line_number = String::new();
1777 buffer_rows
1778 .into_iter()
1779 .enumerate()
1780 .map(|(ix, multibuffer_row)| {
1781 let multibuffer_row = multibuffer_row?;
1782 let display_row = DisplayRow(rows.start.0 + ix as u32);
1783 let color = if active_rows.contains_key(&display_row) {
1784 cx.theme().colors().editor_active_line_number
1785 } else {
1786 cx.theme().colors().editor_line_number
1787 };
1788 line_number.clear();
1789 let default_number = multibuffer_row.0 + 1;
1790 let number = relative_rows
1791 .get(&DisplayRow(ix as u32 + rows.start.0))
1792 .unwrap_or(&default_number);
1793 write!(&mut line_number, "{number}").unwrap();
1794 let run = TextRun {
1795 len: line_number.len(),
1796 font: self.style.text.font(),
1797 color,
1798 background_color: None,
1799 underline: None,
1800 strikethrough: None,
1801 };
1802 let shaped_line = cx
1803 .text_system()
1804 .shape_line(line_number.clone().into(), font_size, &[run])
1805 .unwrap();
1806 Some(shaped_line)
1807 })
1808 .collect()
1809 }
1810
1811 fn layout_gutter_fold_toggles(
1812 &self,
1813 rows: Range<DisplayRow>,
1814 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1815 active_rows: &BTreeMap<DisplayRow, bool>,
1816 snapshot: &EditorSnapshot,
1817 cx: &mut WindowContext,
1818 ) -> Vec<Option<AnyElement>> {
1819 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
1820 && snapshot.mode == EditorMode::Full
1821 && self.editor.read(cx).is_singleton(cx);
1822 if include_fold_statuses {
1823 buffer_rows
1824 .into_iter()
1825 .enumerate()
1826 .map(|(ix, row)| {
1827 if let Some(multibuffer_row) = row {
1828 let display_row = DisplayRow(rows.start.0 + ix as u32);
1829 let active = active_rows.contains_key(&display_row);
1830 snapshot.render_fold_toggle(
1831 multibuffer_row,
1832 active,
1833 self.editor.clone(),
1834 cx,
1835 )
1836 } else {
1837 None
1838 }
1839 })
1840 .collect()
1841 } else {
1842 Vec::new()
1843 }
1844 }
1845
1846 fn layout_crease_trailers(
1847 &self,
1848 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1849 snapshot: &EditorSnapshot,
1850 cx: &mut WindowContext,
1851 ) -> Vec<Option<AnyElement>> {
1852 buffer_rows
1853 .into_iter()
1854 .map(|row| {
1855 if let Some(multibuffer_row) = row {
1856 snapshot.render_crease_trailer(multibuffer_row, cx)
1857 } else {
1858 None
1859 }
1860 })
1861 .collect()
1862 }
1863
1864 fn layout_lines(
1865 rows: Range<DisplayRow>,
1866 line_number_layouts: &[Option<ShapedLine>],
1867 snapshot: &EditorSnapshot,
1868 style: &EditorStyle,
1869 editor_width: Pixels,
1870 cx: &mut WindowContext,
1871 ) -> Vec<LineWithInvisibles> {
1872 if rows.start >= rows.end {
1873 return Vec::new();
1874 }
1875
1876 // Show the placeholder when the editor is empty
1877 if snapshot.is_empty() {
1878 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1879 let placeholder_color = cx.theme().colors().text_placeholder;
1880 let placeholder_text = snapshot.placeholder_text();
1881
1882 let placeholder_lines = placeholder_text
1883 .as_ref()
1884 .map_or("", AsRef::as_ref)
1885 .split('\n')
1886 .skip(rows.start.0 as usize)
1887 .chain(iter::repeat(""))
1888 .take(rows.len());
1889 placeholder_lines
1890 .filter_map(move |line| {
1891 let run = TextRun {
1892 len: line.len(),
1893 font: style.text.font(),
1894 color: placeholder_color,
1895 background_color: None,
1896 underline: Default::default(),
1897 strikethrough: None,
1898 };
1899 cx.text_system()
1900 .shape_line(line.to_string().into(), font_size, &[run])
1901 .log_err()
1902 })
1903 .map(|line| LineWithInvisibles {
1904 width: line.width,
1905 len: line.len,
1906 fragments: smallvec![LineFragment::Text(line)],
1907 invisibles: Vec::new(),
1908 font_size,
1909 })
1910 .collect()
1911 } else {
1912 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
1913 LineWithInvisibles::from_chunks(
1914 chunks,
1915 &style.text,
1916 MAX_LINE_LEN,
1917 rows.len(),
1918 line_number_layouts,
1919 snapshot.mode,
1920 editor_width,
1921 cx,
1922 )
1923 }
1924 }
1925
1926 fn prepaint_lines(
1927 &self,
1928 start_row: DisplayRow,
1929 line_layouts: &mut [LineWithInvisibles],
1930 line_height: Pixels,
1931 scroll_pixel_position: gpui::Point<Pixels>,
1932 content_origin: gpui::Point<Pixels>,
1933 cx: &mut WindowContext,
1934 ) -> SmallVec<[AnyElement; 1]> {
1935 let mut line_elements = SmallVec::new();
1936 for (ix, line) in line_layouts.iter_mut().enumerate() {
1937 let row = start_row + DisplayRow(ix as u32);
1938 line.prepaint(
1939 line_height,
1940 scroll_pixel_position,
1941 row,
1942 content_origin,
1943 &mut line_elements,
1944 cx,
1945 );
1946 }
1947 line_elements
1948 }
1949
1950 #[allow(clippy::too_many_arguments)]
1951 fn render_block(
1952 &self,
1953 block: &Block,
1954 available_width: AvailableSpace,
1955 block_id: BlockId,
1956 block_row_start: DisplayRow,
1957 snapshot: &EditorSnapshot,
1958 text_x: Pixels,
1959 rows: &Range<DisplayRow>,
1960 line_layouts: &[LineWithInvisibles],
1961 gutter_dimensions: &GutterDimensions,
1962 line_height: Pixels,
1963 em_width: Pixels,
1964 text_hitbox: &Hitbox,
1965 editor_width: Pixels,
1966 scroll_width: &mut Pixels,
1967 resized_blocks: &mut HashMap<CustomBlockId, u32>,
1968 cx: &mut WindowContext,
1969 ) -> (AnyElement, Size<Pixels>) {
1970 let mut element = match block {
1971 Block::Custom(block) => {
1972 let align_to = block
1973 .position()
1974 .to_point(&snapshot.buffer_snapshot)
1975 .to_display_point(snapshot);
1976 let anchor_x = text_x
1977 + if rows.contains(&align_to.row()) {
1978 line_layouts[align_to.row().minus(rows.start) as usize]
1979 .x_for_index(align_to.column() as usize)
1980 } else {
1981 layout_line(align_to.row(), snapshot, &self.style, editor_width, cx)
1982 .x_for_index(align_to.column() as usize)
1983 };
1984
1985 div()
1986 .size_full()
1987 .child(block.render(&mut BlockContext {
1988 context: cx,
1989 anchor_x,
1990 gutter_dimensions,
1991 line_height,
1992 em_width,
1993 block_id,
1994 max_width: text_hitbox.size.width.max(*scroll_width),
1995 editor_style: &self.style,
1996 }))
1997 .cursor(CursorStyle::Arrow)
1998 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
1999 .into_any_element()
2000 }
2001
2002 Block::ExcerptHeader {
2003 buffer,
2004 range,
2005 starts_new_buffer,
2006 height,
2007 id,
2008 show_excerpt_controls,
2009 ..
2010 } => {
2011 let include_root = self
2012 .editor
2013 .read(cx)
2014 .project
2015 .as_ref()
2016 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2017 .unwrap_or_default();
2018
2019 #[derive(Clone)]
2020 struct JumpData {
2021 position: Point,
2022 anchor: text::Anchor,
2023 path: ProjectPath,
2024 line_offset_from_top: u32,
2025 }
2026
2027 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
2028 let jump_path = ProjectPath {
2029 worktree_id: file.worktree_id(cx),
2030 path: file.path.clone(),
2031 };
2032 let jump_anchor = range
2033 .primary
2034 .as_ref()
2035 .map_or(range.context.start, |primary| primary.start);
2036
2037 let excerpt_start = range.context.start;
2038 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2039 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
2040 0
2041 } else {
2042 let excerpt_start_row =
2043 language::ToPoint::to_point(&jump_anchor, buffer).row;
2044 jump_position.row - excerpt_start_row
2045 };
2046
2047 let line_offset_from_top =
2048 block_row_start.0 + *height + offset_from_excerpt_start
2049 - snapshot
2050 .scroll_anchor
2051 .scroll_position(&snapshot.display_snapshot)
2052 .y as u32;
2053
2054 JumpData {
2055 position: jump_position,
2056 anchor: jump_anchor,
2057 path: jump_path,
2058 line_offset_from_top,
2059 }
2060 });
2061
2062 let icon_offset = gutter_dimensions.width
2063 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2064
2065 let element = if *starts_new_buffer {
2066 let path = buffer.resolve_file_path(cx, include_root);
2067 let mut filename = None;
2068 let mut parent_path = None;
2069 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2070 if let Some(path) = path {
2071 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2072 parent_path = path
2073 .parent()
2074 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2075 }
2076
2077 let header_padding = px(6.0);
2078
2079 v_flex()
2080 .id(("path excerpt header", EntityId::from(block_id)))
2081 .w_full()
2082 .px(header_padding)
2083 .pt(header_padding)
2084 .child(
2085 h_flex()
2086 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2087 .id("path header block")
2088 .h(2. * cx.line_height())
2089 .px(gpui::px(12.))
2090 .rounded_md()
2091 .shadow_md()
2092 .border_1()
2093 .border_color(cx.theme().colors().border)
2094 .bg(cx.theme().colors().editor_subheader_background)
2095 .justify_between()
2096 .hover(|style| style.bg(cx.theme().colors().element_hover))
2097 .child(
2098 h_flex().gap_3().child(
2099 h_flex()
2100 .gap_2()
2101 .child(
2102 filename
2103 .map(SharedString::from)
2104 .unwrap_or_else(|| "untitled".into()),
2105 )
2106 .when_some(parent_path, |then, path| {
2107 then.child(
2108 div()
2109 .child(path)
2110 .text_color(cx.theme().colors().text_muted),
2111 )
2112 }),
2113 ),
2114 )
2115 .when_some(jump_data.clone(), |el, jump_data| {
2116 el.child(Icon::new(IconName::ArrowUpRight))
2117 .cursor_pointer()
2118 .tooltip(|cx| {
2119 Tooltip::for_action("Jump to File", &OpenExcerpts, cx)
2120 })
2121 .on_mouse_down(MouseButton::Left, |_, cx| {
2122 cx.stop_propagation()
2123 })
2124 .on_click(cx.listener_for(&self.editor, {
2125 move |editor, _, cx| {
2126 editor.jump(
2127 jump_data.path.clone(),
2128 jump_data.position,
2129 jump_data.anchor,
2130 jump_data.line_offset_from_top,
2131 cx,
2132 );
2133 }
2134 }))
2135 }),
2136 )
2137 .children(show_excerpt_controls.then(|| {
2138 h_flex()
2139 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.333)))
2140 .h(1. * cx.line_height())
2141 .pt_1()
2142 .justify_end()
2143 .flex_none()
2144 .w(icon_offset - header_padding)
2145 .child(
2146 ButtonLike::new("expand-icon")
2147 .style(ButtonStyle::Transparent)
2148 .child(
2149 svg()
2150 .path(IconName::ArrowUpFromLine.path())
2151 .size(IconSize::XSmall.rems())
2152 .text_color(cx.theme().colors().editor_line_number)
2153 .group("")
2154 .hover(|style| {
2155 style.text_color(
2156 cx.theme()
2157 .colors()
2158 .editor_active_line_number,
2159 )
2160 }),
2161 )
2162 .on_click(cx.listener_for(&self.editor, {
2163 let id = *id;
2164 move |editor, _, cx| {
2165 editor.expand_excerpt(
2166 id,
2167 multi_buffer::ExpandExcerptDirection::Up,
2168 cx,
2169 );
2170 }
2171 }))
2172 .tooltip({
2173 move |cx| {
2174 Tooltip::for_action(
2175 "Expand Excerpt",
2176 &ExpandExcerpts { lines: 0 },
2177 cx,
2178 )
2179 }
2180 }),
2181 )
2182 }))
2183 } else {
2184 v_flex()
2185 .id(("excerpt header", EntityId::from(block_id)))
2186 .w_full()
2187 .h(snapshot.excerpt_header_height() as f32 * cx.line_height())
2188 .child(
2189 div()
2190 .flex()
2191 .v_flex()
2192 .justify_start()
2193 .id("jump to collapsed context")
2194 .w(relative(1.0))
2195 .h_full()
2196 .child(
2197 div()
2198 .h_px()
2199 .w_full()
2200 .bg(cx.theme().colors().border_variant)
2201 .group_hover("excerpt-jump-action", |style| {
2202 style.bg(cx.theme().colors().border)
2203 }),
2204 ),
2205 )
2206 .child(
2207 h_flex()
2208 .justify_end()
2209 .flex_none()
2210 .w(icon_offset)
2211 .h_full()
2212 .child(
2213 show_excerpt_controls
2214 .then(|| {
2215 ButtonLike::new("expand-icon")
2216 .style(ButtonStyle::Transparent)
2217 .child(
2218 svg()
2219 .path(IconName::ArrowUpFromLine.path())
2220 .size(IconSize::XSmall.rems())
2221 .text_color(
2222 cx.theme().colors().editor_line_number,
2223 )
2224 .group("")
2225 .hover(|style| {
2226 style.text_color(
2227 cx.theme()
2228 .colors()
2229 .editor_active_line_number,
2230 )
2231 }),
2232 )
2233 .on_click(cx.listener_for(&self.editor, {
2234 let id = *id;
2235 move |editor, _, cx| {
2236 editor.expand_excerpt(
2237 id,
2238 multi_buffer::ExpandExcerptDirection::Up,
2239 cx,
2240 );
2241 }
2242 }))
2243 .tooltip({
2244 move |cx| {
2245 Tooltip::for_action(
2246 "Expand Excerpt",
2247 &ExpandExcerpts { lines: 0 },
2248 cx,
2249 )
2250 }
2251 })
2252 })
2253 .unwrap_or_else(|| {
2254 ButtonLike::new("jump-icon")
2255 .style(ButtonStyle::Transparent)
2256 .child(
2257 svg()
2258 .path(IconName::ArrowUpRight.path())
2259 .size(IconSize::XSmall.rems())
2260 .text_color(
2261 cx.theme().colors().border_variant,
2262 )
2263 .group("excerpt-jump-action")
2264 .group_hover(
2265 "excerpt-jump-action",
2266 |style| {
2267 style.text_color(
2268 cx.theme().colors().border,
2269 )
2270 },
2271 ),
2272 )
2273 .when_some(jump_data.clone(), |this, jump_data| {
2274 this.on_click(cx.listener_for(&self.editor, {
2275 let path = jump_data.path.clone();
2276 move |editor, _, cx| {
2277 cx.stop_propagation();
2278
2279 editor.jump(
2280 path.clone(),
2281 jump_data.position,
2282 jump_data.anchor,
2283 jump_data.line_offset_from_top,
2284 cx,
2285 );
2286 }
2287 }))
2288 .tooltip(move |cx| {
2289 Tooltip::for_action(
2290 format!(
2291 "Jump to {}:L{}",
2292 jump_data.path.path.display(),
2293 jump_data.position.row + 1
2294 ),
2295 &OpenExcerpts,
2296 cx,
2297 )
2298 })
2299 })
2300 }),
2301 ),
2302 )
2303 .group("excerpt-jump-action")
2304 .cursor_pointer()
2305 .when_some(jump_data.clone(), |this, jump_data| {
2306 this.on_click(cx.listener_for(&self.editor, {
2307 let path = jump_data.path.clone();
2308 move |editor, _, cx| {
2309 cx.stop_propagation();
2310
2311 editor.jump(
2312 path.clone(),
2313 jump_data.position,
2314 jump_data.anchor,
2315 jump_data.line_offset_from_top,
2316 cx,
2317 );
2318 }
2319 }))
2320 .tooltip(move |cx| {
2321 Tooltip::for_action(
2322 format!(
2323 "Jump to {}:L{}",
2324 jump_data.path.path.display(),
2325 jump_data.position.row + 1
2326 ),
2327 &OpenExcerpts,
2328 cx,
2329 )
2330 })
2331 })
2332 };
2333 element.into_any()
2334 }
2335
2336 Block::ExcerptFooter { id, .. } => {
2337 let element = v_flex()
2338 .id(("excerpt footer", EntityId::from(block_id)))
2339 .w_full()
2340 .h(snapshot.excerpt_footer_height() as f32 * cx.line_height())
2341 .child(
2342 h_flex()
2343 .justify_end()
2344 .flex_none()
2345 .w(gutter_dimensions.width
2346 - (gutter_dimensions.left_padding + gutter_dimensions.margin))
2347 .h_full()
2348 .child(
2349 ButtonLike::new("expand-icon")
2350 .style(ButtonStyle::Transparent)
2351 .child(
2352 svg()
2353 .path(IconName::ArrowDownFromLine.path())
2354 .size(IconSize::XSmall.rems())
2355 .text_color(cx.theme().colors().editor_line_number)
2356 .group("")
2357 .hover(|style| {
2358 style.text_color(
2359 cx.theme().colors().editor_active_line_number,
2360 )
2361 }),
2362 )
2363 .on_click(cx.listener_for(&self.editor, {
2364 let id = *id;
2365 move |editor, _, cx| {
2366 editor.expand_excerpt(
2367 id,
2368 multi_buffer::ExpandExcerptDirection::Down,
2369 cx,
2370 );
2371 }
2372 }))
2373 .tooltip({
2374 move |cx| {
2375 Tooltip::for_action(
2376 "Expand Excerpt",
2377 &ExpandExcerpts { lines: 0 },
2378 cx,
2379 )
2380 }
2381 }),
2382 ),
2383 );
2384 element.into_any()
2385 }
2386 };
2387
2388 // Discover the element's content height, then round up to the nearest multiple of line height.
2389 let preliminary_size =
2390 element.layout_as_root(size(available_width, AvailableSpace::MinContent), cx);
2391 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2392 let final_size = if preliminary_size.height == quantized_height {
2393 preliminary_size
2394 } else {
2395 element.layout_as_root(size(available_width, quantized_height.into()), cx)
2396 };
2397
2398 if let BlockId::Custom(custom_block_id) = block_id {
2399 if block.height() > 0 {
2400 let element_height_in_lines =
2401 ((final_size.height / line_height).ceil() as u32).max(1);
2402 if element_height_in_lines != block.height() {
2403 resized_blocks.insert(custom_block_id, element_height_in_lines);
2404 }
2405 }
2406 }
2407
2408 (element, final_size)
2409 }
2410
2411 #[allow(clippy::too_many_arguments)]
2412 fn render_blocks(
2413 &self,
2414 rows: Range<DisplayRow>,
2415 snapshot: &EditorSnapshot,
2416 hitbox: &Hitbox,
2417 text_hitbox: &Hitbox,
2418 editor_width: Pixels,
2419 scroll_width: &mut Pixels,
2420 gutter_dimensions: &GutterDimensions,
2421 em_width: Pixels,
2422 text_x: Pixels,
2423 line_height: Pixels,
2424 line_layouts: &[LineWithInvisibles],
2425 cx: &mut WindowContext,
2426 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2427 let (fixed_blocks, non_fixed_blocks) = snapshot
2428 .blocks_in_range(rows.clone())
2429 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2430
2431 let mut focused_block = self
2432 .editor
2433 .update(cx, |editor, _| editor.take_focused_block());
2434 let mut fixed_block_max_width = Pixels::ZERO;
2435 let mut blocks = Vec::new();
2436 let mut resized_blocks = HashMap::default();
2437
2438 for (row, block) in fixed_blocks {
2439 let block_id = block.id();
2440
2441 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2442 focused_block = None;
2443 }
2444
2445 let (element, element_size) = self.render_block(
2446 block,
2447 AvailableSpace::MinContent,
2448 block_id,
2449 row,
2450 snapshot,
2451 text_x,
2452 &rows,
2453 line_layouts,
2454 gutter_dimensions,
2455 line_height,
2456 em_width,
2457 text_hitbox,
2458 editor_width,
2459 scroll_width,
2460 &mut resized_blocks,
2461 cx,
2462 );
2463 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2464 blocks.push(BlockLayout {
2465 id: block_id,
2466 row: Some(row),
2467 element,
2468 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
2469 style: BlockStyle::Fixed,
2470 });
2471 }
2472 for (row, block) in non_fixed_blocks {
2473 let style = block.style();
2474 let width = match style {
2475 BlockStyle::Sticky => hitbox.size.width,
2476 BlockStyle::Flex => hitbox
2477 .size
2478 .width
2479 .max(fixed_block_max_width)
2480 .max(gutter_dimensions.width + *scroll_width),
2481 BlockStyle::Fixed => unreachable!(),
2482 };
2483 let block_id = block.id();
2484
2485 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2486 focused_block = None;
2487 }
2488
2489 let (element, element_size) = self.render_block(
2490 block,
2491 width.into(),
2492 block_id,
2493 row,
2494 snapshot,
2495 text_x,
2496 &rows,
2497 line_layouts,
2498 gutter_dimensions,
2499 line_height,
2500 em_width,
2501 text_hitbox,
2502 editor_width,
2503 scroll_width,
2504 &mut resized_blocks,
2505 cx,
2506 );
2507
2508 blocks.push(BlockLayout {
2509 id: block_id,
2510 row: Some(row),
2511 element,
2512 available_space: size(width.into(), element_size.height.into()),
2513 style,
2514 });
2515 }
2516
2517 if let Some(focused_block) = focused_block {
2518 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2519 if focus_handle.is_focused(cx) {
2520 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2521 let style = block.style();
2522 let width = match style {
2523 BlockStyle::Fixed => AvailableSpace::MinContent,
2524 BlockStyle::Flex => AvailableSpace::Definite(
2525 hitbox
2526 .size
2527 .width
2528 .max(fixed_block_max_width)
2529 .max(gutter_dimensions.width + *scroll_width),
2530 ),
2531 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2532 };
2533
2534 let (element, element_size) = self.render_block(
2535 &block,
2536 width,
2537 focused_block.id,
2538 rows.end,
2539 snapshot,
2540 text_x,
2541 &rows,
2542 line_layouts,
2543 gutter_dimensions,
2544 line_height,
2545 em_width,
2546 text_hitbox,
2547 editor_width,
2548 scroll_width,
2549 &mut resized_blocks,
2550 cx,
2551 );
2552
2553 blocks.push(BlockLayout {
2554 id: block.id(),
2555 row: None,
2556 element,
2557 available_space: size(width, element_size.height.into()),
2558 style,
2559 });
2560 }
2561 }
2562 }
2563 }
2564
2565 if resized_blocks.is_empty() {
2566 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2567 Ok(blocks)
2568 } else {
2569 Err(resized_blocks)
2570 }
2571 }
2572
2573 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
2574 /// a restart of rendering for the editor based on the new sizes.
2575 fn layout_blocks(
2576 &self,
2577 blocks: &mut Vec<BlockLayout>,
2578 hitbox: &Hitbox,
2579 line_height: Pixels,
2580 scroll_pixel_position: gpui::Point<Pixels>,
2581 cx: &mut WindowContext,
2582 ) {
2583 for block in blocks {
2584 let mut origin = if let Some(row) = block.row {
2585 hitbox.origin
2586 + point(
2587 Pixels::ZERO,
2588 row.as_f32() * line_height - scroll_pixel_position.y,
2589 )
2590 } else {
2591 // Position the block outside the visible area
2592 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2593 };
2594
2595 if !matches!(block.style, BlockStyle::Sticky) {
2596 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2597 }
2598
2599 let focus_handle = block
2600 .element
2601 .prepaint_as_root(origin, block.available_space, cx);
2602
2603 if let Some(focus_handle) = focus_handle {
2604 self.editor.update(cx, |editor, _cx| {
2605 editor.set_focused_block(FocusedBlock {
2606 id: block.id,
2607 focus_handle: focus_handle.downgrade(),
2608 });
2609 });
2610 }
2611 }
2612 }
2613
2614 #[allow(clippy::too_many_arguments)]
2615 fn layout_context_menu(
2616 &self,
2617 line_height: Pixels,
2618 hitbox: &Hitbox,
2619 text_hitbox: &Hitbox,
2620 content_origin: gpui::Point<Pixels>,
2621 start_row: DisplayRow,
2622 scroll_pixel_position: gpui::Point<Pixels>,
2623 line_layouts: &[LineWithInvisibles],
2624 newest_selection_head: DisplayPoint,
2625 gutter_overshoot: Pixels,
2626 cx: &mut WindowContext,
2627 ) -> bool {
2628 let max_height = cmp::min(
2629 12. * line_height,
2630 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
2631 );
2632 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
2633 if editor.context_menu_visible() {
2634 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
2635 } else {
2636 None
2637 }
2638 }) else {
2639 return false;
2640 };
2641
2642 let context_menu_size = context_menu.layout_as_root(AvailableSpace::min_size(), cx);
2643
2644 let (x, y) = match position {
2645 crate::ContextMenuOrigin::EditorPoint(point) => {
2646 let cursor_row_layout = &line_layouts[point.row().minus(start_row) as usize];
2647 let x = cursor_row_layout.x_for_index(point.column() as usize)
2648 - scroll_pixel_position.x;
2649 let y = point.row().next_row().as_f32() * line_height - scroll_pixel_position.y;
2650 (x, y)
2651 }
2652 crate::ContextMenuOrigin::GutterIndicator(row) => {
2653 // 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
2654 // text field.
2655 let x = -gutter_overshoot;
2656 let y = row.next_row().as_f32() * line_height - scroll_pixel_position.y;
2657 (x, y)
2658 }
2659 };
2660
2661 let mut list_origin = content_origin + point(x, y);
2662 let list_width = context_menu_size.width;
2663 let list_height = context_menu_size.height;
2664
2665 // Snap the right edge of the list to the right edge of the window if
2666 // its horizontal bounds overflow.
2667 if list_origin.x + list_width > cx.viewport_size().width {
2668 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
2669 }
2670
2671 if list_origin.y + list_height > text_hitbox.lower_right().y {
2672 list_origin.y -= line_height + list_height;
2673 }
2674
2675 cx.defer_draw(context_menu, list_origin, 1);
2676 true
2677 }
2678
2679 fn layout_mouse_context_menu(
2680 &self,
2681 editor_snapshot: &EditorSnapshot,
2682 visible_range: Range<DisplayRow>,
2683 cx: &mut WindowContext,
2684 ) -> Option<AnyElement> {
2685 let position = self.editor.update(cx, |editor, cx| {
2686 let visible_start_point = editor.display_to_pixel_point(
2687 DisplayPoint::new(visible_range.start, 0),
2688 editor_snapshot,
2689 cx,
2690 )?;
2691 let visible_end_point = editor.display_to_pixel_point(
2692 DisplayPoint::new(visible_range.end, 0),
2693 editor_snapshot,
2694 cx,
2695 )?;
2696
2697 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2698 let (source_display_point, position) = match mouse_context_menu.position {
2699 MenuPosition::PinnedToScreen(point) => (None, point),
2700 MenuPosition::PinnedToEditor {
2701 source,
2702 offset_x,
2703 offset_y,
2704 } => {
2705 let source_display_point = source.to_display_point(editor_snapshot);
2706 let mut source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
2707 source_point.x += offset_x;
2708 source_point.y += offset_y;
2709 (Some(source_display_point), source_point)
2710 }
2711 };
2712
2713 let source_included = source_display_point.map_or(true, |source_display_point| {
2714 visible_range
2715 .to_inclusive()
2716 .contains(&source_display_point.row())
2717 });
2718 let position_included =
2719 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
2720 if !source_included && !position_included {
2721 None
2722 } else {
2723 Some(position)
2724 }
2725 })?;
2726
2727 let mut element = self.editor.update(cx, |editor, _| {
2728 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2729 let context_menu = mouse_context_menu.context_menu.clone();
2730
2731 Some(
2732 deferred(
2733 anchored()
2734 .position(position)
2735 .child(context_menu)
2736 .anchor(AnchorCorner::TopLeft)
2737 .snap_to_window_with_margin(px(8.)),
2738 )
2739 .with_priority(1)
2740 .into_any(),
2741 )
2742 })?;
2743
2744 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
2745 Some(element)
2746 }
2747
2748 #[allow(clippy::too_many_arguments)]
2749 fn layout_hover_popovers(
2750 &self,
2751 snapshot: &EditorSnapshot,
2752 hitbox: &Hitbox,
2753 text_hitbox: &Hitbox,
2754 visible_display_row_range: Range<DisplayRow>,
2755 content_origin: gpui::Point<Pixels>,
2756 scroll_pixel_position: gpui::Point<Pixels>,
2757 line_layouts: &[LineWithInvisibles],
2758 line_height: Pixels,
2759 em_width: Pixels,
2760 cx: &mut WindowContext,
2761 ) {
2762 struct MeasuredHoverPopover {
2763 element: AnyElement,
2764 size: Size<Pixels>,
2765 horizontal_offset: Pixels,
2766 }
2767
2768 let max_size = size(
2769 (120. * em_width) // Default size
2770 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2771 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2772 (16. * line_height) // Default size
2773 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2774 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2775 );
2776
2777 let hover_popovers = self.editor.update(cx, |editor, cx| {
2778 editor
2779 .hover_state
2780 .render(snapshot, visible_display_row_range.clone(), max_size, cx)
2781 });
2782 let Some((position, hover_popovers)) = hover_popovers else {
2783 return;
2784 };
2785
2786 // This is safe because we check on layout whether the required row is available
2787 let hovered_row_layout =
2788 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
2789
2790 // Compute Hovered Point
2791 let x =
2792 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
2793 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
2794 let hovered_point = content_origin + point(x, y);
2795
2796 let mut overall_height = Pixels::ZERO;
2797 let mut measured_hover_popovers = Vec::new();
2798 for mut hover_popover in hover_popovers {
2799 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
2800 let horizontal_offset =
2801 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
2802
2803 overall_height += HOVER_POPOVER_GAP + size.height;
2804
2805 measured_hover_popovers.push(MeasuredHoverPopover {
2806 element: hover_popover,
2807 size,
2808 horizontal_offset,
2809 });
2810 }
2811 overall_height += HOVER_POPOVER_GAP;
2812
2813 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
2814 let mut occlusion = div()
2815 .size_full()
2816 .occlude()
2817 .on_mouse_move(|_, cx| cx.stop_propagation())
2818 .into_any_element();
2819 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
2820 cx.defer_draw(occlusion, origin, 2);
2821 }
2822
2823 if hovered_point.y > overall_height {
2824 // There is enough space above. Render popovers above the hovered point
2825 let mut current_y = hovered_point.y;
2826 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2827 let size = popover.size;
2828 let popover_origin = point(
2829 hovered_point.x + popover.horizontal_offset,
2830 current_y - size.height,
2831 );
2832
2833 cx.defer_draw(popover.element, popover_origin, 2);
2834 if position != itertools::Position::Last {
2835 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
2836 draw_occluder(size.width, origin, cx);
2837 }
2838
2839 current_y = popover_origin.y - HOVER_POPOVER_GAP;
2840 }
2841 } else {
2842 // There is not enough space above. Render popovers below the hovered point
2843 let mut current_y = hovered_point.y + line_height;
2844 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2845 let size = popover.size;
2846 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
2847
2848 cx.defer_draw(popover.element, popover_origin, 2);
2849 if position != itertools::Position::Last {
2850 let origin = point(popover_origin.x, popover_origin.y + size.height);
2851 draw_occluder(size.width, origin, cx);
2852 }
2853
2854 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
2855 }
2856 }
2857 }
2858
2859 #[allow(clippy::too_many_arguments)]
2860 fn layout_signature_help(
2861 &self,
2862 hitbox: &Hitbox,
2863 content_origin: gpui::Point<Pixels>,
2864 scroll_pixel_position: gpui::Point<Pixels>,
2865 newest_selection_head: Option<DisplayPoint>,
2866 start_row: DisplayRow,
2867 line_layouts: &[LineWithInvisibles],
2868 line_height: Pixels,
2869 em_width: Pixels,
2870 cx: &mut WindowContext,
2871 ) {
2872 if !self.editor.focus_handle(cx).is_focused(cx) {
2873 return;
2874 }
2875 let Some(newest_selection_head) = newest_selection_head else {
2876 return;
2877 };
2878 let selection_row = newest_selection_head.row();
2879 if selection_row < start_row {
2880 return;
2881 }
2882 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
2883 else {
2884 return;
2885 };
2886
2887 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
2888 - scroll_pixel_position.x
2889 + content_origin.x;
2890 let start_y =
2891 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
2892
2893 let max_size = size(
2894 (120. * em_width) // Default size
2895 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2896 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2897 (16. * line_height) // Default size
2898 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2899 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2900 );
2901
2902 let maybe_element = self.editor.update(cx, |editor, cx| {
2903 if let Some(popover) = editor.signature_help_state.popover_mut() {
2904 let element = popover.render(
2905 &self.style,
2906 max_size,
2907 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2908 cx,
2909 );
2910 Some(element)
2911 } else {
2912 None
2913 }
2914 });
2915 if let Some(mut element) = maybe_element {
2916 let window_size = cx.viewport_size();
2917 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
2918 let mut point = point(start_x, start_y - size.height);
2919
2920 // Adjusting to ensure the popover does not overflow in the X-axis direction.
2921 if point.x + size.width >= window_size.width {
2922 point.x = window_size.width - size.width;
2923 }
2924
2925 cx.defer_draw(element, point, 1)
2926 }
2927 }
2928
2929 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
2930 cx.paint_layer(layout.hitbox.bounds, |cx| {
2931 let scroll_top = layout.position_map.snapshot.scroll_position().y;
2932 let gutter_bg = cx.theme().colors().editor_gutter_background;
2933 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
2934 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
2935
2936 if let EditorMode::Full = layout.mode {
2937 let mut active_rows = layout.active_rows.iter().peekable();
2938 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
2939 let mut end_row = start_row.0;
2940 while active_rows
2941 .peek()
2942 .map_or(false, |(active_row, has_selection)| {
2943 active_row.0 == end_row + 1
2944 && *has_selection == contains_non_empty_selection
2945 })
2946 {
2947 active_rows.next().unwrap();
2948 end_row += 1;
2949 }
2950
2951 if !contains_non_empty_selection {
2952 let highlight_h_range =
2953 match layout.position_map.snapshot.current_line_highlight {
2954 CurrentLineHighlight::Gutter => Some(Range {
2955 start: layout.hitbox.left(),
2956 end: layout.gutter_hitbox.right(),
2957 }),
2958 CurrentLineHighlight::Line => Some(Range {
2959 start: layout.text_hitbox.bounds.left(),
2960 end: layout.text_hitbox.bounds.right(),
2961 }),
2962 CurrentLineHighlight::All => Some(Range {
2963 start: layout.hitbox.left(),
2964 end: layout.hitbox.right(),
2965 }),
2966 CurrentLineHighlight::None => None,
2967 };
2968 if let Some(range) = highlight_h_range {
2969 let active_line_bg = cx.theme().colors().editor_active_line_background;
2970 let bounds = Bounds {
2971 origin: point(
2972 range.start,
2973 layout.hitbox.origin.y
2974 + (start_row.as_f32() - scroll_top)
2975 * layout.position_map.line_height,
2976 ),
2977 size: size(
2978 range.end - range.start,
2979 layout.position_map.line_height
2980 * (end_row - start_row.0 + 1) as f32,
2981 ),
2982 };
2983 cx.paint_quad(fill(bounds, active_line_bg));
2984 }
2985 }
2986 }
2987
2988 let mut paint_highlight =
2989 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
2990 let origin = point(
2991 layout.hitbox.origin.x,
2992 layout.hitbox.origin.y
2993 + (highlight_row_start.as_f32() - scroll_top)
2994 * layout.position_map.line_height,
2995 );
2996 let size = size(
2997 layout.hitbox.size.width,
2998 layout.position_map.line_height
2999 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
3000 );
3001 cx.paint_quad(fill(Bounds { origin, size }, color));
3002 };
3003
3004 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
3005 for (&new_row, &new_color) in &layout.highlighted_rows {
3006 match &mut current_paint {
3007 Some((current_color, current_range)) => {
3008 let current_color = *current_color;
3009 let new_range_started = current_color != new_color
3010 || current_range.end.next_row() != new_row;
3011 if new_range_started {
3012 paint_highlight(
3013 current_range.start,
3014 current_range.end,
3015 current_color,
3016 );
3017 current_paint = Some((new_color, new_row..new_row));
3018 continue;
3019 } else {
3020 current_range.end = current_range.end.next_row();
3021 }
3022 }
3023 None => current_paint = Some((new_color, new_row..new_row)),
3024 };
3025 }
3026 if let Some((color, range)) = current_paint {
3027 paint_highlight(range.start, range.end, color);
3028 }
3029
3030 let scroll_left =
3031 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
3032
3033 for (wrap_position, active) in layout.wrap_guides.iter() {
3034 let x = (layout.text_hitbox.origin.x
3035 + *wrap_position
3036 + layout.position_map.em_width / 2.)
3037 - scroll_left;
3038
3039 let show_scrollbars = layout
3040 .scrollbar_layout
3041 .as_ref()
3042 .map_or(false, |scrollbar| scrollbar.visible);
3043 if x < layout.text_hitbox.origin.x
3044 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
3045 {
3046 continue;
3047 }
3048
3049 let color = if *active {
3050 cx.theme().colors().editor_active_wrap_guide
3051 } else {
3052 cx.theme().colors().editor_wrap_guide
3053 };
3054 cx.paint_quad(fill(
3055 Bounds {
3056 origin: point(x, layout.text_hitbox.origin.y),
3057 size: size(px(1.), layout.text_hitbox.size.height),
3058 },
3059 color,
3060 ));
3061 }
3062 }
3063 })
3064 }
3065
3066 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3067 let Some(indent_guides) = &layout.indent_guides else {
3068 return;
3069 };
3070
3071 let faded_color = |color: Hsla, alpha: f32| {
3072 let mut faded = color;
3073 faded.a = alpha;
3074 faded
3075 };
3076
3077 for indent_guide in indent_guides {
3078 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3079 let settings = indent_guide.settings;
3080
3081 // TODO fixed for now, expose them through themes later
3082 const INDENT_AWARE_ALPHA: f32 = 0.2;
3083 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3084 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3085 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3086
3087 let line_color = match (settings.coloring, indent_guide.active) {
3088 (IndentGuideColoring::Disabled, _) => None,
3089 (IndentGuideColoring::Fixed, false) => {
3090 Some(cx.theme().colors().editor_indent_guide)
3091 }
3092 (IndentGuideColoring::Fixed, true) => {
3093 Some(cx.theme().colors().editor_indent_guide_active)
3094 }
3095 (IndentGuideColoring::IndentAware, false) => {
3096 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3097 }
3098 (IndentGuideColoring::IndentAware, true) => {
3099 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3100 }
3101 };
3102
3103 let background_color = match (settings.background_coloring, indent_guide.active) {
3104 (IndentGuideBackgroundColoring::Disabled, _) => None,
3105 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3106 indent_accent_colors,
3107 INDENT_AWARE_BACKGROUND_ALPHA,
3108 )),
3109 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3110 indent_accent_colors,
3111 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3112 )),
3113 };
3114
3115 let requested_line_width = if indent_guide.active {
3116 settings.active_line_width
3117 } else {
3118 settings.line_width
3119 }
3120 .clamp(1, 10);
3121 let mut line_indicator_width = 0.;
3122 if let Some(color) = line_color {
3123 cx.paint_quad(fill(
3124 Bounds {
3125 origin: indent_guide.origin,
3126 size: size(px(requested_line_width as f32), indent_guide.length),
3127 },
3128 color,
3129 ));
3130 line_indicator_width = requested_line_width as f32;
3131 }
3132
3133 if let Some(color) = background_color {
3134 let width = indent_guide.single_indent_width - px(line_indicator_width);
3135 cx.paint_quad(fill(
3136 Bounds {
3137 origin: point(
3138 indent_guide.origin.x + px(line_indicator_width),
3139 indent_guide.origin.y,
3140 ),
3141 size: size(width, indent_guide.length),
3142 },
3143 color,
3144 ));
3145 }
3146 }
3147 }
3148
3149 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3150 let line_height = layout.position_map.line_height;
3151 let scroll_position = layout.position_map.snapshot.scroll_position();
3152 let scroll_top = scroll_position.y * line_height;
3153
3154 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3155
3156 for (ix, line) in layout.line_numbers.iter().enumerate() {
3157 if let Some(line) = line {
3158 let line_origin = layout.gutter_hitbox.origin
3159 + point(
3160 layout.gutter_hitbox.size.width
3161 - line.width
3162 - layout.gutter_dimensions.right_padding,
3163 ix as f32 * line_height - (scroll_top % line_height),
3164 );
3165
3166 line.paint(line_origin, line_height, cx).log_err();
3167 }
3168 }
3169 }
3170
3171 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
3172 if layout.display_hunks.is_empty() {
3173 return;
3174 }
3175
3176 let line_height = layout.position_map.line_height;
3177 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3178 for (hunk, hitbox) in &layout.display_hunks {
3179 let hunk_to_paint = match hunk {
3180 DisplayDiffHunk::Folded { .. } => {
3181 let hunk_bounds = Self::diff_hunk_bounds(
3182 &layout.position_map.snapshot,
3183 line_height,
3184 layout.gutter_hitbox.bounds,
3185 hunk,
3186 );
3187 Some((
3188 hunk_bounds,
3189 cx.theme().status().modified,
3190 Corners::all(1. * line_height),
3191 ))
3192 }
3193 DisplayDiffHunk::Unfolded { status, .. } => {
3194 hitbox.as_ref().map(|hunk_hitbox| match status {
3195 DiffHunkStatus::Added => (
3196 hunk_hitbox.bounds,
3197 cx.theme().status().created,
3198 Corners::all(0.05 * line_height),
3199 ),
3200 DiffHunkStatus::Modified => (
3201 hunk_hitbox.bounds,
3202 cx.theme().status().modified,
3203 Corners::all(0.05 * line_height),
3204 ),
3205 DiffHunkStatus::Removed => (
3206 Bounds::new(
3207 point(
3208 hunk_hitbox.origin.x - hunk_hitbox.size.width,
3209 hunk_hitbox.origin.y,
3210 ),
3211 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
3212 ),
3213 cx.theme().status().deleted,
3214 Corners::all(1. * line_height),
3215 ),
3216 })
3217 }
3218 };
3219
3220 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
3221 cx.paint_quad(quad(
3222 hunk_bounds,
3223 corner_radii,
3224 background_color,
3225 Edges::default(),
3226 transparent_black(),
3227 ));
3228 }
3229 }
3230 });
3231 }
3232
3233 pub(super) fn diff_hunk_bounds(
3234 snapshot: &EditorSnapshot,
3235 line_height: Pixels,
3236 gutter_bounds: Bounds<Pixels>,
3237 hunk: &DisplayDiffHunk,
3238 ) -> Bounds<Pixels> {
3239 let scroll_position = snapshot.scroll_position();
3240 let scroll_top = scroll_position.y * line_height;
3241
3242 match hunk {
3243 DisplayDiffHunk::Folded { display_row, .. } => {
3244 let start_y = display_row.as_f32() * line_height - scroll_top;
3245 let end_y = start_y + line_height;
3246
3247 let width = 0.275 * line_height;
3248 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3249 let highlight_size = size(width, end_y - start_y);
3250 Bounds::new(highlight_origin, highlight_size)
3251 }
3252 DisplayDiffHunk::Unfolded {
3253 display_row_range,
3254 status,
3255 ..
3256 } => match status {
3257 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
3258 let start_row = display_row_range.start;
3259 let end_row = display_row_range.end;
3260 // If we're in a multibuffer, row range span might include an
3261 // excerpt header, so if we were to draw the marker straight away,
3262 // the hunk might include the rows of that header.
3263 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
3264 // Instead, we simply check whether the range we're dealing with includes
3265 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
3266 let end_row_in_current_excerpt = snapshot
3267 .blocks_in_range(start_row..end_row)
3268 .find_map(|(start_row, block)| {
3269 if matches!(block, Block::ExcerptHeader { .. }) {
3270 Some(start_row)
3271 } else {
3272 None
3273 }
3274 })
3275 .unwrap_or(end_row);
3276
3277 let start_y = start_row.as_f32() * line_height - scroll_top;
3278 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
3279
3280 let width = 0.275 * line_height;
3281 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3282 let highlight_size = size(width, end_y - start_y);
3283 Bounds::new(highlight_origin, highlight_size)
3284 }
3285 DiffHunkStatus::Removed => {
3286 let row = display_row_range.start;
3287
3288 let offset = line_height / 2.;
3289 let start_y = row.as_f32() * line_height - offset - scroll_top;
3290 let end_y = start_y + line_height;
3291
3292 let width = 0.35 * line_height;
3293 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3294 let highlight_size = size(width, end_y - start_y);
3295 Bounds::new(highlight_origin, highlight_size)
3296 }
3297 },
3298 }
3299 }
3300
3301 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3302 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3303 cx.with_element_namespace("gutter_fold_toggles", |cx| {
3304 for fold_indicator in layout.gutter_fold_toggles.iter_mut().flatten() {
3305 fold_indicator.paint(cx);
3306 }
3307 });
3308
3309 for test_indicator in layout.test_indicators.iter_mut() {
3310 test_indicator.paint(cx);
3311 }
3312 for close_indicator in layout.close_indicators.iter_mut() {
3313 close_indicator.paint(cx);
3314 }
3315
3316 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
3317 indicator.paint(cx);
3318 }
3319 });
3320 }
3321
3322 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3323 for (_, hunk_hitbox) in &layout.display_hunks {
3324 if let Some(hunk_hitbox) = hunk_hitbox {
3325 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
3326 }
3327 }
3328
3329 let show_git_gutter = layout
3330 .position_map
3331 .snapshot
3332 .show_git_diff_gutter
3333 .unwrap_or_else(|| {
3334 matches!(
3335 ProjectSettings::get_global(cx).git.git_gutter,
3336 Some(GitGutterSetting::TrackedFiles)
3337 )
3338 });
3339 if show_git_gutter {
3340 Self::paint_diff_hunks(layout, cx)
3341 }
3342
3343 let highlight_width = 0.275 * layout.position_map.line_height;
3344 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
3345 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3346 for (range, color) in &layout.highlighted_gutter_ranges {
3347 let start_row = if range.start.row() < layout.visible_display_row_range.start {
3348 layout.visible_display_row_range.start - DisplayRow(1)
3349 } else {
3350 range.start.row()
3351 };
3352 let end_row = if range.end.row() > layout.visible_display_row_range.end {
3353 layout.visible_display_row_range.end + DisplayRow(1)
3354 } else {
3355 range.end.row()
3356 };
3357
3358 let start_y = layout.gutter_hitbox.top()
3359 + start_row.0 as f32 * layout.position_map.line_height
3360 - layout.position_map.scroll_pixel_position.y;
3361 let end_y = layout.gutter_hitbox.top()
3362 + (end_row.0 + 1) as f32 * layout.position_map.line_height
3363 - layout.position_map.scroll_pixel_position.y;
3364 let bounds = Bounds::from_corners(
3365 point(layout.gutter_hitbox.left(), start_y),
3366 point(layout.gutter_hitbox.left() + highlight_width, end_y),
3367 );
3368 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
3369 }
3370 });
3371 }
3372
3373 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3374 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
3375 return;
3376 };
3377
3378 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3379 for mut blame_element in blamed_display_rows.into_iter() {
3380 blame_element.paint(cx);
3381 }
3382 })
3383 }
3384
3385 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3386 cx.with_content_mask(
3387 Some(ContentMask {
3388 bounds: layout.text_hitbox.bounds,
3389 }),
3390 |cx| {
3391 let cursor_style = if self
3392 .editor
3393 .read(cx)
3394 .hovered_link_state
3395 .as_ref()
3396 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
3397 {
3398 CursorStyle::PointingHand
3399 } else {
3400 CursorStyle::IBeam
3401 };
3402 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
3403
3404 let invisible_display_ranges = self.paint_highlights(layout, cx);
3405 self.paint_lines(&invisible_display_ranges, layout, cx);
3406 self.paint_redactions(layout, cx);
3407 self.paint_cursors(layout, cx);
3408 self.paint_inline_blame(layout, cx);
3409 cx.with_element_namespace("crease_trailers", |cx| {
3410 for trailer in layout.crease_trailers.iter_mut().flatten() {
3411 trailer.element.paint(cx);
3412 }
3413 });
3414 },
3415 )
3416 }
3417
3418 fn paint_highlights(
3419 &mut self,
3420 layout: &mut EditorLayout,
3421 cx: &mut WindowContext,
3422 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
3423 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3424 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
3425 let line_end_overshoot = 0.15 * layout.position_map.line_height;
3426 for (range, color) in &layout.highlighted_ranges {
3427 self.paint_highlighted_range(
3428 range.clone(),
3429 *color,
3430 Pixels::ZERO,
3431 line_end_overshoot,
3432 layout,
3433 cx,
3434 );
3435 }
3436
3437 let corner_radius = 0.15 * layout.position_map.line_height;
3438
3439 for (player_color, selections) in &layout.selections {
3440 for selection in selections.iter() {
3441 self.paint_highlighted_range(
3442 selection.range.clone(),
3443 player_color.selection,
3444 corner_radius,
3445 corner_radius * 2.,
3446 layout,
3447 cx,
3448 );
3449
3450 if selection.is_local && !selection.range.is_empty() {
3451 invisible_display_ranges.push(selection.range.clone());
3452 }
3453 }
3454 }
3455 invisible_display_ranges
3456 })
3457 }
3458
3459 fn paint_lines(
3460 &mut self,
3461 invisible_display_ranges: &[Range<DisplayPoint>],
3462 layout: &mut EditorLayout,
3463 cx: &mut WindowContext,
3464 ) {
3465 let whitespace_setting = self
3466 .editor
3467 .read(cx)
3468 .buffer
3469 .read(cx)
3470 .settings_at(0, cx)
3471 .show_whitespaces;
3472
3473 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
3474 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
3475 line_with_invisibles.draw(
3476 layout,
3477 row,
3478 layout.content_origin,
3479 whitespace_setting,
3480 invisible_display_ranges,
3481 cx,
3482 )
3483 }
3484
3485 for line_element in &mut layout.line_elements {
3486 line_element.paint(cx);
3487 }
3488 }
3489
3490 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3491 if layout.redacted_ranges.is_empty() {
3492 return;
3493 }
3494
3495 let line_end_overshoot = layout.line_end_overshoot();
3496
3497 // A softer than perfect black
3498 let redaction_color = gpui::rgb(0x0e1111);
3499
3500 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3501 for range in layout.redacted_ranges.iter() {
3502 self.paint_highlighted_range(
3503 range.clone(),
3504 redaction_color.into(),
3505 Pixels::ZERO,
3506 line_end_overshoot,
3507 layout,
3508 cx,
3509 );
3510 }
3511 });
3512 }
3513
3514 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3515 for cursor in &mut layout.visible_cursors {
3516 cursor.paint(layout.content_origin, cx);
3517 }
3518 }
3519
3520 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3521 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
3522 return;
3523 };
3524
3525 let thumb_bounds = scrollbar_layout.thumb_bounds();
3526 if scrollbar_layout.visible {
3527 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
3528 cx.paint_quad(quad(
3529 scrollbar_layout.hitbox.bounds,
3530 Corners::default(),
3531 cx.theme().colors().scrollbar_track_background,
3532 Edges {
3533 top: Pixels::ZERO,
3534 right: Pixels::ZERO,
3535 bottom: Pixels::ZERO,
3536 left: ScrollbarLayout::BORDER_WIDTH,
3537 },
3538 cx.theme().colors().scrollbar_track_border,
3539 ));
3540
3541 let fast_markers =
3542 self.collect_fast_scrollbar_markers(layout, scrollbar_layout, cx);
3543 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
3544 self.refresh_slow_scrollbar_markers(layout, scrollbar_layout, cx);
3545
3546 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
3547 for marker in markers.iter().chain(&fast_markers) {
3548 let mut marker = marker.clone();
3549 marker.bounds.origin += scrollbar_layout.hitbox.origin;
3550 cx.paint_quad(marker);
3551 }
3552
3553 cx.paint_quad(quad(
3554 thumb_bounds,
3555 Corners::default(),
3556 cx.theme().colors().scrollbar_thumb_background,
3557 Edges {
3558 top: Pixels::ZERO,
3559 right: Pixels::ZERO,
3560 bottom: Pixels::ZERO,
3561 left: ScrollbarLayout::BORDER_WIDTH,
3562 },
3563 cx.theme().colors().scrollbar_thumb_border,
3564 ));
3565 });
3566 }
3567
3568 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
3569
3570 let row_height = scrollbar_layout.row_height;
3571 let row_range = scrollbar_layout.visible_row_range.clone();
3572
3573 cx.on_mouse_event({
3574 let editor = self.editor.clone();
3575 let hitbox = scrollbar_layout.hitbox.clone();
3576 let mut mouse_position = cx.mouse_position();
3577 move |event: &MouseMoveEvent, phase, cx| {
3578 if phase == DispatchPhase::Capture {
3579 return;
3580 }
3581
3582 editor.update(cx, |editor, cx| {
3583 if event.pressed_button == Some(MouseButton::Left)
3584 && editor.scroll_manager.is_dragging_scrollbar()
3585 {
3586 let y = mouse_position.y;
3587 let new_y = event.position.y;
3588 if (hitbox.top()..hitbox.bottom()).contains(&y) {
3589 let mut position = editor.scroll_position(cx);
3590 position.y += (new_y - y) / row_height;
3591 if position.y < 0.0 {
3592 position.y = 0.0;
3593 }
3594 editor.set_scroll_position(position, cx);
3595 }
3596
3597 cx.stop_propagation();
3598 } else {
3599 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3600 if hitbox.is_hovered(cx) {
3601 editor.scroll_manager.show_scrollbar(cx);
3602 }
3603 }
3604 mouse_position = event.position;
3605 })
3606 }
3607 });
3608
3609 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
3610 cx.on_mouse_event({
3611 let editor = self.editor.clone();
3612 move |_: &MouseUpEvent, phase, cx| {
3613 if phase == DispatchPhase::Capture {
3614 return;
3615 }
3616
3617 editor.update(cx, |editor, cx| {
3618 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3619 cx.stop_propagation();
3620 });
3621 }
3622 });
3623 } else {
3624 cx.on_mouse_event({
3625 let editor = self.editor.clone();
3626 let hitbox = scrollbar_layout.hitbox.clone();
3627 move |event: &MouseDownEvent, phase, cx| {
3628 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
3629 return;
3630 }
3631
3632 editor.update(cx, |editor, cx| {
3633 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
3634
3635 let y = event.position.y;
3636 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
3637 let center_row = ((y - hitbox.top()) / row_height).round() as u32;
3638 let top_row = center_row
3639 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
3640 let mut position = editor.scroll_position(cx);
3641 position.y = top_row as f32;
3642 editor.set_scroll_position(position, cx);
3643 } else {
3644 editor.scroll_manager.show_scrollbar(cx);
3645 }
3646
3647 cx.stop_propagation();
3648 });
3649 }
3650 });
3651 }
3652 }
3653
3654 fn collect_fast_scrollbar_markers(
3655 &self,
3656 layout: &EditorLayout,
3657 scrollbar_layout: &ScrollbarLayout,
3658 cx: &mut WindowContext,
3659 ) -> Vec<PaintQuad> {
3660 const LIMIT: usize = 100;
3661 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
3662 return vec![];
3663 }
3664 let cursor_ranges = layout
3665 .cursors
3666 .iter()
3667 .map(|(point, color)| ColoredRange {
3668 start: point.row(),
3669 end: point.row(),
3670 color: *color,
3671 })
3672 .collect_vec();
3673 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
3674 }
3675
3676 fn refresh_slow_scrollbar_markers(
3677 &self,
3678 layout: &EditorLayout,
3679 scrollbar_layout: &ScrollbarLayout,
3680 cx: &mut WindowContext,
3681 ) {
3682 self.editor.update(cx, |editor, cx| {
3683 if !editor.is_singleton(cx)
3684 || !editor
3685 .scrollbar_marker_state
3686 .should_refresh(scrollbar_layout.hitbox.size)
3687 {
3688 return;
3689 }
3690
3691 let scrollbar_layout = scrollbar_layout.clone();
3692 let background_highlights = editor.background_highlights.clone();
3693 let snapshot = layout.position_map.snapshot.clone();
3694 let theme = cx.theme().clone();
3695 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
3696
3697 editor.scrollbar_marker_state.dirty = false;
3698 editor.scrollbar_marker_state.pending_refresh =
3699 Some(cx.spawn(|editor, mut cx| async move {
3700 let scrollbar_size = scrollbar_layout.hitbox.size;
3701 let scrollbar_markers = cx
3702 .background_executor()
3703 .spawn(async move {
3704 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
3705 let mut marker_quads = Vec::new();
3706 if scrollbar_settings.git_diff {
3707 let marker_row_ranges = snapshot
3708 .buffer_snapshot
3709 .git_diff_hunks_in_range(
3710 MultiBufferRow::MIN..MultiBufferRow::MAX,
3711 )
3712 .map(|hunk| {
3713 let start_display_row =
3714 MultiBufferPoint::new(hunk.row_range.start.0, 0)
3715 .to_display_point(&snapshot.display_snapshot)
3716 .row();
3717 let mut end_display_row =
3718 MultiBufferPoint::new(hunk.row_range.end.0, 0)
3719 .to_display_point(&snapshot.display_snapshot)
3720 .row();
3721 if end_display_row != start_display_row {
3722 end_display_row.0 -= 1;
3723 }
3724 let color = match hunk_status(&hunk) {
3725 DiffHunkStatus::Added => theme.status().created,
3726 DiffHunkStatus::Modified => theme.status().modified,
3727 DiffHunkStatus::Removed => theme.status().deleted,
3728 };
3729 ColoredRange {
3730 start: start_display_row,
3731 end: end_display_row,
3732 color,
3733 }
3734 });
3735
3736 marker_quads.extend(
3737 scrollbar_layout
3738 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
3739 );
3740 }
3741
3742 for (background_highlight_id, (_, background_ranges)) in
3743 background_highlights.iter()
3744 {
3745 let is_search_highlights = *background_highlight_id
3746 == TypeId::of::<BufferSearchHighlights>();
3747 let is_symbol_occurrences = *background_highlight_id
3748 == TypeId::of::<DocumentHighlightRead>()
3749 || *background_highlight_id
3750 == TypeId::of::<DocumentHighlightWrite>();
3751 if (is_search_highlights && scrollbar_settings.search_results)
3752 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
3753 {
3754 let mut color = theme.status().info;
3755 if is_symbol_occurrences {
3756 color.fade_out(0.5);
3757 }
3758 let marker_row_ranges = background_ranges.iter().map(|range| {
3759 let display_start = range
3760 .start
3761 .to_display_point(&snapshot.display_snapshot);
3762 let display_end =
3763 range.end.to_display_point(&snapshot.display_snapshot);
3764 ColoredRange {
3765 start: display_start.row(),
3766 end: display_end.row(),
3767 color,
3768 }
3769 });
3770 marker_quads.extend(
3771 scrollbar_layout
3772 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
3773 );
3774 }
3775 }
3776
3777 if scrollbar_settings.diagnostics {
3778 let diagnostics = snapshot
3779 .buffer_snapshot
3780 .diagnostics_in_range::<_, Point>(
3781 Point::zero()..max_point,
3782 false,
3783 )
3784 // We want to sort by severity, in order to paint the most severe diagnostics last.
3785 .sorted_by_key(|diagnostic| {
3786 std::cmp::Reverse(diagnostic.diagnostic.severity)
3787 });
3788
3789 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
3790 let start_display = diagnostic
3791 .range
3792 .start
3793 .to_display_point(&snapshot.display_snapshot);
3794 let end_display = diagnostic
3795 .range
3796 .end
3797 .to_display_point(&snapshot.display_snapshot);
3798 let color = match diagnostic.diagnostic.severity {
3799 DiagnosticSeverity::ERROR => theme.status().error,
3800 DiagnosticSeverity::WARNING => theme.status().warning,
3801 DiagnosticSeverity::INFORMATION => theme.status().info,
3802 _ => theme.status().hint,
3803 };
3804 ColoredRange {
3805 start: start_display.row(),
3806 end: end_display.row(),
3807 color,
3808 }
3809 });
3810 marker_quads.extend(
3811 scrollbar_layout
3812 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
3813 );
3814 }
3815
3816 Arc::from(marker_quads)
3817 })
3818 .await;
3819
3820 editor.update(&mut cx, |editor, cx| {
3821 editor.scrollbar_marker_state.markers = scrollbar_markers;
3822 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
3823 editor.scrollbar_marker_state.pending_refresh = None;
3824 cx.notify();
3825 })?;
3826
3827 Ok(())
3828 }));
3829 });
3830 }
3831
3832 #[allow(clippy::too_many_arguments)]
3833 fn paint_highlighted_range(
3834 &self,
3835 range: Range<DisplayPoint>,
3836 color: Hsla,
3837 corner_radius: Pixels,
3838 line_end_overshoot: Pixels,
3839 layout: &EditorLayout,
3840 cx: &mut WindowContext,
3841 ) {
3842 let start_row = layout.visible_display_row_range.start;
3843 let end_row = layout.visible_display_row_range.end;
3844 if range.start != range.end {
3845 let row_range = if range.end.column() == 0 {
3846 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3847 } else {
3848 cmp::max(range.start.row(), start_row)
3849 ..cmp::min(range.end.row().next_row(), end_row)
3850 };
3851
3852 let highlighted_range = HighlightedRange {
3853 color,
3854 line_height: layout.position_map.line_height,
3855 corner_radius,
3856 start_y: layout.content_origin.y
3857 + row_range.start.as_f32() * layout.position_map.line_height
3858 - layout.position_map.scroll_pixel_position.y,
3859 lines: row_range
3860 .iter_rows()
3861 .map(|row| {
3862 let line_layout =
3863 &layout.position_map.line_layouts[row.minus(start_row) as usize];
3864 HighlightedRangeLine {
3865 start_x: if row == range.start.row() {
3866 layout.content_origin.x
3867 + line_layout.x_for_index(range.start.column() as usize)
3868 - layout.position_map.scroll_pixel_position.x
3869 } else {
3870 layout.content_origin.x
3871 - layout.position_map.scroll_pixel_position.x
3872 },
3873 end_x: if row == range.end.row() {
3874 layout.content_origin.x
3875 + line_layout.x_for_index(range.end.column() as usize)
3876 - layout.position_map.scroll_pixel_position.x
3877 } else {
3878 layout.content_origin.x + line_layout.width + line_end_overshoot
3879 - layout.position_map.scroll_pixel_position.x
3880 },
3881 }
3882 })
3883 .collect(),
3884 };
3885
3886 highlighted_range.paint(layout.text_hitbox.bounds, cx);
3887 }
3888 }
3889
3890 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3891 if let Some(mut inline_blame) = layout.inline_blame.take() {
3892 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3893 inline_blame.paint(cx);
3894 })
3895 }
3896 }
3897
3898 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3899 for mut block in layout.blocks.drain(..) {
3900 block.element.paint(cx);
3901 }
3902 }
3903
3904 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3905 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
3906 mouse_context_menu.paint(cx);
3907 }
3908 }
3909
3910 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3911 cx.on_mouse_event({
3912 let position_map = layout.position_map.clone();
3913 let editor = self.editor.clone();
3914 let hitbox = layout.hitbox.clone();
3915 let mut delta = ScrollDelta::default();
3916
3917 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
3918 // accidentally turn off their scrolling.
3919 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
3920
3921 move |event: &ScrollWheelEvent, phase, cx| {
3922 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
3923 delta = delta.coalesce(event.delta);
3924 editor.update(cx, |editor, cx| {
3925 let position_map: &PositionMap = &position_map;
3926
3927 let line_height = position_map.line_height;
3928 let max_glyph_width = position_map.em_width;
3929 let (delta, axis) = match delta {
3930 gpui::ScrollDelta::Pixels(mut pixels) => {
3931 //Trackpad
3932 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
3933 (pixels, axis)
3934 }
3935
3936 gpui::ScrollDelta::Lines(lines) => {
3937 //Not trackpad
3938 let pixels =
3939 point(lines.x * max_glyph_width, lines.y * line_height);
3940 (pixels, None)
3941 }
3942 };
3943
3944 let current_scroll_position = position_map.snapshot.scroll_position();
3945 let x = (current_scroll_position.x * max_glyph_width
3946 - (delta.x * scroll_sensitivity))
3947 / max_glyph_width;
3948 let y = (current_scroll_position.y * line_height
3949 - (delta.y * scroll_sensitivity))
3950 / line_height;
3951 let mut scroll_position =
3952 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
3953 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
3954 if forbid_vertical_scroll {
3955 scroll_position.y = current_scroll_position.y;
3956 }
3957
3958 if scroll_position != current_scroll_position {
3959 editor.scroll(scroll_position, axis, cx);
3960 cx.stop_propagation();
3961 } else if y < 0. {
3962 // Due to clamping, we may fail to detect cases of overscroll to the top;
3963 // We want the scroll manager to get an update in such cases and detect the change of direction
3964 // on the next frame.
3965 cx.notify();
3966 }
3967 });
3968 }
3969 }
3970 });
3971 }
3972
3973 fn paint_mouse_listeners(
3974 &mut self,
3975 layout: &EditorLayout,
3976 hovered_hunk: Option<HoveredHunk>,
3977 cx: &mut WindowContext,
3978 ) {
3979 self.paint_scroll_wheel_listener(layout, cx);
3980
3981 cx.on_mouse_event({
3982 let position_map = layout.position_map.clone();
3983 let editor = self.editor.clone();
3984 let text_hitbox = layout.text_hitbox.clone();
3985 let gutter_hitbox = layout.gutter_hitbox.clone();
3986
3987 move |event: &MouseDownEvent, phase, cx| {
3988 if phase == DispatchPhase::Bubble {
3989 match event.button {
3990 MouseButton::Left => editor.update(cx, |editor, cx| {
3991 Self::mouse_left_down(
3992 editor,
3993 event,
3994 hovered_hunk.clone(),
3995 &position_map,
3996 &text_hitbox,
3997 &gutter_hitbox,
3998 cx,
3999 );
4000 }),
4001 MouseButton::Right => editor.update(cx, |editor, cx| {
4002 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
4003 }),
4004 MouseButton::Middle => editor.update(cx, |editor, cx| {
4005 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
4006 }),
4007 _ => {}
4008 };
4009 }
4010 }
4011 });
4012
4013 cx.on_mouse_event({
4014 let editor = self.editor.clone();
4015 let position_map = layout.position_map.clone();
4016 let text_hitbox = layout.text_hitbox.clone();
4017
4018 move |event: &MouseUpEvent, phase, cx| {
4019 if phase == DispatchPhase::Bubble {
4020 editor.update(cx, |editor, cx| {
4021 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
4022 });
4023 }
4024 }
4025 });
4026 cx.on_mouse_event({
4027 let position_map = layout.position_map.clone();
4028 let editor = self.editor.clone();
4029 let text_hitbox = layout.text_hitbox.clone();
4030 let gutter_hitbox = layout.gutter_hitbox.clone();
4031
4032 move |event: &MouseMoveEvent, phase, cx| {
4033 if phase == DispatchPhase::Bubble {
4034 editor.update(cx, |editor, cx| {
4035 if editor.hover_state.focused(cx) {
4036 return;
4037 }
4038 if event.pressed_button == Some(MouseButton::Left)
4039 || event.pressed_button == Some(MouseButton::Middle)
4040 {
4041 Self::mouse_dragged(
4042 editor,
4043 event,
4044 &position_map,
4045 text_hitbox.bounds,
4046 cx,
4047 )
4048 }
4049
4050 Self::mouse_moved(
4051 editor,
4052 event,
4053 &position_map,
4054 &text_hitbox,
4055 &gutter_hitbox,
4056 cx,
4057 )
4058 });
4059 }
4060 }
4061 });
4062 }
4063
4064 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
4065 bounds.upper_right().x - self.style.scrollbar_width
4066 }
4067
4068 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
4069 let style = &self.style;
4070 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4071 let layout = cx
4072 .text_system()
4073 .shape_line(
4074 SharedString::from(" ".repeat(column)),
4075 font_size,
4076 &[TextRun {
4077 len: column,
4078 font: style.text.font(),
4079 color: Hsla::default(),
4080 background_color: None,
4081 underline: None,
4082 strikethrough: None,
4083 }],
4084 )
4085 .unwrap();
4086
4087 layout.width
4088 }
4089
4090 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
4091 let digit_count = snapshot
4092 .max_buffer_row()
4093 .next_row()
4094 .as_f32()
4095 .log10()
4096 .floor() as usize
4097 + 1;
4098 self.column_pixels(digit_count, cx)
4099 }
4100
4101 #[allow(clippy::too_many_arguments)]
4102 fn layout_hunk_diff_close_indicators(
4103 &self,
4104 line_height: Pixels,
4105 scroll_pixel_position: gpui::Point<Pixels>,
4106 gutter_dimensions: &GutterDimensions,
4107 gutter_hitbox: &Hitbox,
4108 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4109 expanded_hunks_by_rows: HashMap<DisplayRow, ExpandedHunk>,
4110 cx: &mut WindowContext,
4111 ) -> Vec<AnyElement> {
4112 self.editor.update(cx, |editor, cx| {
4113 expanded_hunks_by_rows
4114 .into_iter()
4115 .map(|(display_row, hunk)| {
4116 let button = editor.close_hunk_diff_button(
4117 HoveredHunk {
4118 multi_buffer_range: hunk.hunk_range,
4119 status: hunk.status,
4120 diff_base_byte_range: hunk.diff_base_byte_range,
4121 },
4122 display_row,
4123 cx,
4124 );
4125
4126 prepaint_gutter_button(
4127 button,
4128 display_row,
4129 line_height,
4130 gutter_dimensions,
4131 scroll_pixel_position,
4132 gutter_hitbox,
4133 rows_with_hunk_bounds,
4134 cx,
4135 )
4136 })
4137 .collect()
4138 })
4139 }
4140}
4141
4142#[allow(clippy::too_many_arguments)]
4143fn prepaint_gutter_button(
4144 button: IconButton,
4145 row: DisplayRow,
4146 line_height: Pixels,
4147 gutter_dimensions: &GutterDimensions,
4148 scroll_pixel_position: gpui::Point<Pixels>,
4149 gutter_hitbox: &Hitbox,
4150 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4151 cx: &mut WindowContext<'_>,
4152) -> AnyElement {
4153 let mut button = button.into_any_element();
4154 let available_space = size(
4155 AvailableSpace::MinContent,
4156 AvailableSpace::Definite(line_height),
4157 );
4158 let indicator_size = button.layout_as_root(available_space, cx);
4159
4160 let blame_width = gutter_dimensions.git_blame_entries_width;
4161 let gutter_width = rows_with_hunk_bounds
4162 .get(&row)
4163 .map(|bounds| bounds.size.width);
4164 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
4165
4166 let mut x = left_offset;
4167 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
4168 - indicator_size.width
4169 - left_offset;
4170 x += available_width / 2.;
4171
4172 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
4173 y += (line_height - indicator_size.height) / 2.;
4174
4175 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
4176 button
4177}
4178
4179fn render_inline_blame_entry(
4180 blame: &gpui::Model<GitBlame>,
4181 blame_entry: BlameEntry,
4182 style: &EditorStyle,
4183 workspace: Option<WeakView<Workspace>>,
4184 cx: &mut WindowContext<'_>,
4185) -> AnyElement {
4186 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4187
4188 let author = blame_entry.author.as_deref().unwrap_or_default();
4189 let text = format!("{}, {}", author, relative_timestamp);
4190
4191 let details = blame.read(cx).details_for_entry(&blame_entry);
4192
4193 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
4194
4195 h_flex()
4196 .id("inline-blame")
4197 .w_full()
4198 .font_family(style.text.font().family)
4199 .text_color(cx.theme().status().hint)
4200 .line_height(style.text.line_height)
4201 .child(Icon::new(IconName::FileGit).color(Color::Hint))
4202 .child(text)
4203 .gap_2()
4204 .hoverable_tooltip(move |_| tooltip.clone().into())
4205 .into_any()
4206}
4207
4208fn render_blame_entry(
4209 ix: usize,
4210 blame: &gpui::Model<GitBlame>,
4211 blame_entry: BlameEntry,
4212 style: &EditorStyle,
4213 last_used_color: &mut Option<(PlayerColor, Oid)>,
4214 editor: View<Editor>,
4215 cx: &mut WindowContext<'_>,
4216) -> AnyElement {
4217 let mut sha_color = cx
4218 .theme()
4219 .players()
4220 .color_for_participant(blame_entry.sha.into());
4221 // If the last color we used is the same as the one we get for this line, but
4222 // the commit SHAs are different, then we try again to get a different color.
4223 match *last_used_color {
4224 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
4225 let index: u32 = blame_entry.sha.into();
4226 sha_color = cx.theme().players().color_for_participant(index + 1);
4227 }
4228 _ => {}
4229 };
4230 last_used_color.replace((sha_color, blame_entry.sha));
4231
4232 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4233
4234 let short_commit_id = blame_entry.sha.display_short();
4235
4236 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
4237 let name = util::truncate_and_trailoff(author_name, 20);
4238
4239 let details = blame.read(cx).details_for_entry(&blame_entry);
4240
4241 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
4242
4243 let tooltip = cx.new_view(|_| {
4244 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
4245 });
4246
4247 h_flex()
4248 .w_full()
4249 .font_family(style.text.font().family)
4250 .line_height(style.text.line_height)
4251 .id(("blame", ix))
4252 .children([
4253 div()
4254 .text_color(sha_color.cursor)
4255 .child(short_commit_id)
4256 .mr_2(),
4257 div()
4258 .w_full()
4259 .h_flex()
4260 .justify_between()
4261 .text_color(cx.theme().status().hint)
4262 .child(name)
4263 .child(relative_timestamp),
4264 ])
4265 .on_mouse_down(MouseButton::Right, {
4266 let blame_entry = blame_entry.clone();
4267 let details = details.clone();
4268 move |event, cx| {
4269 deploy_blame_entry_context_menu(
4270 &blame_entry,
4271 details.as_ref(),
4272 editor.clone(),
4273 event.position,
4274 cx,
4275 );
4276 }
4277 })
4278 .hover(|style| style.bg(cx.theme().colors().element_hover))
4279 .when_some(
4280 details.and_then(|details| details.permalink),
4281 |this, url| {
4282 let url = url.clone();
4283 this.cursor_pointer().on_click(move |_, cx| {
4284 cx.stop_propagation();
4285 cx.open_url(url.as_str())
4286 })
4287 },
4288 )
4289 .hoverable_tooltip(move |_| tooltip.clone().into())
4290 .into_any()
4291}
4292
4293fn deploy_blame_entry_context_menu(
4294 blame_entry: &BlameEntry,
4295 details: Option<&CommitDetails>,
4296 editor: View<Editor>,
4297 position: gpui::Point<Pixels>,
4298 cx: &mut WindowContext<'_>,
4299) {
4300 let context_menu = ContextMenu::build(cx, move |menu, _| {
4301 let sha = format!("{}", blame_entry.sha);
4302 menu.on_blur_subscription(Subscription::new(|| {}))
4303 .entry("Copy commit SHA", None, move |cx| {
4304 cx.write_to_clipboard(ClipboardItem::new_string(sha.clone()));
4305 })
4306 .when_some(
4307 details.and_then(|details| details.permalink.clone()),
4308 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
4309 )
4310 });
4311
4312 editor.update(cx, move |editor, cx| {
4313 editor.mouse_context_menu = Some(MouseContextMenu::pinned_to_screen(
4314 position,
4315 context_menu,
4316 cx,
4317 ));
4318 cx.notify();
4319 });
4320}
4321
4322#[derive(Debug)]
4323pub(crate) struct LineWithInvisibles {
4324 fragments: SmallVec<[LineFragment; 1]>,
4325 invisibles: Vec<Invisible>,
4326 len: usize,
4327 width: Pixels,
4328 font_size: Pixels,
4329}
4330
4331#[allow(clippy::large_enum_variant)]
4332enum LineFragment {
4333 Text(ShapedLine),
4334 Element {
4335 element: Option<AnyElement>,
4336 size: Size<Pixels>,
4337 len: usize,
4338 },
4339}
4340
4341impl fmt::Debug for LineFragment {
4342 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
4343 match self {
4344 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
4345 LineFragment::Element { size, len, .. } => f
4346 .debug_struct("Element")
4347 .field("size", size)
4348 .field("len", len)
4349 .finish(),
4350 }
4351 }
4352}
4353
4354impl LineWithInvisibles {
4355 #[allow(clippy::too_many_arguments)]
4356 fn from_chunks<'a>(
4357 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
4358 text_style: &TextStyle,
4359 max_line_len: usize,
4360 max_line_count: usize,
4361 line_number_layouts: &[Option<ShapedLine>],
4362 editor_mode: EditorMode,
4363 text_width: Pixels,
4364 cx: &mut WindowContext,
4365 ) -> Vec<Self> {
4366 let mut layouts = Vec::with_capacity(max_line_count);
4367 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
4368 let mut line = String::new();
4369 let mut invisibles = Vec::new();
4370 let mut width = Pixels::ZERO;
4371 let mut len = 0;
4372 let mut styles = Vec::new();
4373 let mut non_whitespace_added = false;
4374 let mut row = 0;
4375 let mut line_exceeded_max_len = false;
4376 let font_size = text_style.font_size.to_pixels(cx.rem_size());
4377
4378 let ellipsis = SharedString::from("⋯");
4379
4380 for highlighted_chunk in chunks.chain([HighlightedChunk {
4381 text: "\n",
4382 style: None,
4383 is_tab: false,
4384 renderer: None,
4385 }]) {
4386 if let Some(renderer) = highlighted_chunk.renderer {
4387 if !line.is_empty() {
4388 let shaped_line = cx
4389 .text_system()
4390 .shape_line(line.clone().into(), font_size, &styles)
4391 .unwrap();
4392 width += shaped_line.width;
4393 len += shaped_line.len;
4394 fragments.push(LineFragment::Text(shaped_line));
4395 line.clear();
4396 styles.clear();
4397 }
4398
4399 let available_width = if renderer.constrain_width {
4400 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
4401 ellipsis.clone()
4402 } else {
4403 SharedString::from(Arc::from(highlighted_chunk.text))
4404 };
4405 let shaped_line = cx
4406 .text_system()
4407 .shape_line(
4408 chunk,
4409 font_size,
4410 &[text_style.to_run(highlighted_chunk.text.len())],
4411 )
4412 .unwrap();
4413 AvailableSpace::Definite(shaped_line.width)
4414 } else {
4415 AvailableSpace::MinContent
4416 };
4417
4418 let mut element = (renderer.render)(&mut ChunkRendererContext {
4419 context: cx,
4420 max_width: text_width,
4421 });
4422 let line_height = text_style.line_height_in_pixels(cx.rem_size());
4423 let size = element.layout_as_root(
4424 size(available_width, AvailableSpace::Definite(line_height)),
4425 cx,
4426 );
4427
4428 width += size.width;
4429 len += highlighted_chunk.text.len();
4430 fragments.push(LineFragment::Element {
4431 element: Some(element),
4432 size,
4433 len: highlighted_chunk.text.len(),
4434 });
4435 } else {
4436 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
4437 if ix > 0 {
4438 let shaped_line = cx
4439 .text_system()
4440 .shape_line(line.clone().into(), font_size, &styles)
4441 .unwrap();
4442 width += shaped_line.width;
4443 len += shaped_line.len;
4444 fragments.push(LineFragment::Text(shaped_line));
4445 layouts.push(Self {
4446 width: mem::take(&mut width),
4447 len: mem::take(&mut len),
4448 fragments: mem::take(&mut fragments),
4449 invisibles: std::mem::take(&mut invisibles),
4450 font_size,
4451 });
4452
4453 line.clear();
4454 styles.clear();
4455 row += 1;
4456 line_exceeded_max_len = false;
4457 non_whitespace_added = false;
4458 if row == max_line_count {
4459 return layouts;
4460 }
4461 }
4462
4463 if !line_chunk.is_empty() && !line_exceeded_max_len {
4464 let text_style = if let Some(style) = highlighted_chunk.style {
4465 Cow::Owned(text_style.clone().highlight(style))
4466 } else {
4467 Cow::Borrowed(text_style)
4468 };
4469
4470 if line.len() + line_chunk.len() > max_line_len {
4471 let mut chunk_len = max_line_len - line.len();
4472 while !line_chunk.is_char_boundary(chunk_len) {
4473 chunk_len -= 1;
4474 }
4475 line_chunk = &line_chunk[..chunk_len];
4476 line_exceeded_max_len = true;
4477 }
4478
4479 styles.push(TextRun {
4480 len: line_chunk.len(),
4481 font: text_style.font(),
4482 color: text_style.color,
4483 background_color: text_style.background_color,
4484 underline: text_style.underline,
4485 strikethrough: text_style.strikethrough,
4486 });
4487
4488 if editor_mode == EditorMode::Full {
4489 // Line wrap pads its contents with fake whitespaces,
4490 // avoid printing them
4491 let inside_wrapped_string = line_number_layouts
4492 .get(row)
4493 .and_then(|layout| layout.as_ref())
4494 .is_none();
4495 if highlighted_chunk.is_tab {
4496 if non_whitespace_added || !inside_wrapped_string {
4497 invisibles.push(Invisible::Tab {
4498 line_start_offset: line.len(),
4499 line_end_offset: line.len() + line_chunk.len(),
4500 });
4501 }
4502 } else {
4503 invisibles.extend(
4504 line_chunk
4505 .bytes()
4506 .enumerate()
4507 .filter(|(_, line_byte)| {
4508 let is_whitespace =
4509 (*line_byte as char).is_whitespace();
4510 non_whitespace_added |= !is_whitespace;
4511 is_whitespace
4512 && (non_whitespace_added || !inside_wrapped_string)
4513 })
4514 .map(|(whitespace_index, _)| Invisible::Whitespace {
4515 line_offset: line.len() + whitespace_index,
4516 }),
4517 )
4518 }
4519 }
4520
4521 line.push_str(line_chunk);
4522 }
4523 }
4524 }
4525 }
4526
4527 layouts
4528 }
4529
4530 fn prepaint(
4531 &mut self,
4532 line_height: Pixels,
4533 scroll_pixel_position: gpui::Point<Pixels>,
4534 row: DisplayRow,
4535 content_origin: gpui::Point<Pixels>,
4536 line_elements: &mut SmallVec<[AnyElement; 1]>,
4537 cx: &mut WindowContext,
4538 ) {
4539 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
4540 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
4541 for fragment in &mut self.fragments {
4542 match fragment {
4543 LineFragment::Text(line) => {
4544 fragment_origin.x += line.width;
4545 }
4546 LineFragment::Element { element, size, .. } => {
4547 let mut element = element
4548 .take()
4549 .expect("you can't prepaint LineWithInvisibles twice");
4550
4551 // Center the element vertically within the line.
4552 let mut element_origin = fragment_origin;
4553 element_origin.y += (line_height - size.height) / 2.;
4554 element.prepaint_at(element_origin, cx);
4555 line_elements.push(element);
4556
4557 fragment_origin.x += size.width;
4558 }
4559 }
4560 }
4561 }
4562
4563 fn draw(
4564 &self,
4565 layout: &EditorLayout,
4566 row: DisplayRow,
4567 content_origin: gpui::Point<Pixels>,
4568 whitespace_setting: ShowWhitespaceSetting,
4569 selection_ranges: &[Range<DisplayPoint>],
4570 cx: &mut WindowContext,
4571 ) {
4572 let line_height = layout.position_map.line_height;
4573 let line_y = line_height
4574 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
4575
4576 let mut fragment_origin =
4577 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
4578
4579 for fragment in &self.fragments {
4580 match fragment {
4581 LineFragment::Text(line) => {
4582 line.paint(fragment_origin, line_height, cx).log_err();
4583 fragment_origin.x += line.width;
4584 }
4585 LineFragment::Element { size, .. } => {
4586 fragment_origin.x += size.width;
4587 }
4588 }
4589 }
4590
4591 self.draw_invisibles(
4592 selection_ranges,
4593 layout,
4594 content_origin,
4595 line_y,
4596 row,
4597 line_height,
4598 whitespace_setting,
4599 cx,
4600 );
4601 }
4602
4603 #[allow(clippy::too_many_arguments)]
4604 fn draw_invisibles(
4605 &self,
4606 selection_ranges: &[Range<DisplayPoint>],
4607 layout: &EditorLayout,
4608 content_origin: gpui::Point<Pixels>,
4609 line_y: Pixels,
4610 row: DisplayRow,
4611 line_height: Pixels,
4612 whitespace_setting: ShowWhitespaceSetting,
4613 cx: &mut WindowContext,
4614 ) {
4615 let extract_whitespace_info = |invisible: &Invisible| {
4616 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
4617 Invisible::Tab {
4618 line_start_offset,
4619 line_end_offset,
4620 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
4621 Invisible::Whitespace { line_offset } => {
4622 (*line_offset, line_offset + 1, &layout.space_invisible)
4623 }
4624 };
4625
4626 let x_offset = self.x_for_index(token_offset);
4627 let invisible_offset =
4628 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
4629 let origin = content_origin
4630 + gpui::point(
4631 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
4632 line_y,
4633 );
4634
4635 (
4636 [token_offset, token_end_offset],
4637 Box::new(move |cx: &mut WindowContext| {
4638 invisible_symbol.paint(origin, line_height, cx).log_err();
4639 }),
4640 )
4641 };
4642
4643 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
4644 match whitespace_setting {
4645 ShowWhitespaceSetting::None => (),
4646 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
4647 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
4648 let invisible_point = DisplayPoint::new(row, start as u32);
4649 if !selection_ranges
4650 .iter()
4651 .any(|region| region.start <= invisible_point && invisible_point < region.end)
4652 {
4653 return;
4654 }
4655
4656 paint(cx);
4657 }),
4658
4659 // For a whitespace to be on a boundary, any of the following conditions need to be met:
4660 // - It is a tab
4661 // - It is adjacent to an edge (start or end)
4662 // - It is adjacent to a whitespace (left or right)
4663 ShowWhitespaceSetting::Boundary => {
4664 // 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
4665 // the above cases.
4666 // Note: We zip in the original `invisibles` to check for tab equality
4667 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
4668 for (([start, end], paint), invisible) in
4669 invisible_iter.zip_eq(self.invisibles.iter())
4670 {
4671 let should_render = match (&last_seen, invisible) {
4672 (_, Invisible::Tab { .. }) => true,
4673 (Some((_, last_end, _)), _) => *last_end == start,
4674 _ => false,
4675 };
4676
4677 if should_render || start == 0 || end == self.len {
4678 paint(cx);
4679
4680 // Since we are scanning from the left, we will skip over the first available whitespace that is part
4681 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
4682 if let Some((should_render_last, last_end, paint_last)) = last_seen {
4683 // Note that we need to make sure that the last one is actually adjacent
4684 if !should_render_last && last_end == start {
4685 paint_last(cx);
4686 }
4687 }
4688 }
4689
4690 // Manually render anything within a selection
4691 let invisible_point = DisplayPoint::new(row, start as u32);
4692 if selection_ranges.iter().any(|region| {
4693 region.start <= invisible_point && invisible_point < region.end
4694 }) {
4695 paint(cx);
4696 }
4697
4698 last_seen = Some((should_render, end, paint));
4699 }
4700 }
4701 }
4702 }
4703
4704 pub fn x_for_index(&self, index: usize) -> Pixels {
4705 let mut fragment_start_x = Pixels::ZERO;
4706 let mut fragment_start_index = 0;
4707
4708 for fragment in &self.fragments {
4709 match fragment {
4710 LineFragment::Text(shaped_line) => {
4711 let fragment_end_index = fragment_start_index + shaped_line.len;
4712 if index < fragment_end_index {
4713 return fragment_start_x
4714 + shaped_line.x_for_index(index - fragment_start_index);
4715 }
4716 fragment_start_x += shaped_line.width;
4717 fragment_start_index = fragment_end_index;
4718 }
4719 LineFragment::Element { len, size, .. } => {
4720 let fragment_end_index = fragment_start_index + len;
4721 if index < fragment_end_index {
4722 return fragment_start_x;
4723 }
4724 fragment_start_x += size.width;
4725 fragment_start_index = fragment_end_index;
4726 }
4727 }
4728 }
4729
4730 fragment_start_x
4731 }
4732
4733 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
4734 let mut fragment_start_x = Pixels::ZERO;
4735 let mut fragment_start_index = 0;
4736
4737 for fragment in &self.fragments {
4738 match fragment {
4739 LineFragment::Text(shaped_line) => {
4740 let fragment_end_x = fragment_start_x + shaped_line.width;
4741 if x < fragment_end_x {
4742 return Some(
4743 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
4744 );
4745 }
4746 fragment_start_x = fragment_end_x;
4747 fragment_start_index += shaped_line.len;
4748 }
4749 LineFragment::Element { len, size, .. } => {
4750 let fragment_end_x = fragment_start_x + size.width;
4751 if x < fragment_end_x {
4752 return Some(fragment_start_index);
4753 }
4754 fragment_start_index += len;
4755 fragment_start_x = fragment_end_x;
4756 }
4757 }
4758 }
4759
4760 None
4761 }
4762
4763 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
4764 let mut fragment_start_index = 0;
4765
4766 for fragment in &self.fragments {
4767 match fragment {
4768 LineFragment::Text(shaped_line) => {
4769 let fragment_end_index = fragment_start_index + shaped_line.len;
4770 if index < fragment_end_index {
4771 return shaped_line.font_id_for_index(index - fragment_start_index);
4772 }
4773 fragment_start_index = fragment_end_index;
4774 }
4775 LineFragment::Element { len, .. } => {
4776 let fragment_end_index = fragment_start_index + len;
4777 if index < fragment_end_index {
4778 return None;
4779 }
4780 fragment_start_index = fragment_end_index;
4781 }
4782 }
4783 }
4784
4785 None
4786 }
4787}
4788
4789#[derive(Debug, Clone, Copy, PartialEq, Eq)]
4790enum Invisible {
4791 /// A tab character
4792 ///
4793 /// A tab character is internally represented by spaces (configured by the user's tab width)
4794 /// aligned to the nearest column, so it's necessary to store the start and end offset for
4795 /// adjacency checks.
4796 Tab {
4797 line_start_offset: usize,
4798 line_end_offset: usize,
4799 },
4800 Whitespace {
4801 line_offset: usize,
4802 },
4803}
4804
4805impl EditorElement {
4806 /// Returns the rem size to use when rendering the [`EditorElement`].
4807 ///
4808 /// This allows UI elements to scale based on the `buffer_font_size`.
4809 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
4810 match self.editor.read(cx).mode {
4811 EditorMode::Full => {
4812 let buffer_font_size = self.style.text.font_size;
4813 match buffer_font_size {
4814 AbsoluteLength::Pixels(pixels) => {
4815 let rem_size_scale = {
4816 // Our default UI font size is 14px on a 16px base scale.
4817 // This means the default UI font size is 0.875rems.
4818 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
4819
4820 // We then determine the delta between a single rem and the default font
4821 // size scale.
4822 let default_font_size_delta = 1. - default_font_size_scale;
4823
4824 // Finally, we add this delta to 1rem to get the scale factor that
4825 // should be used to scale up the UI.
4826 1. + default_font_size_delta
4827 };
4828
4829 Some(pixels * rem_size_scale)
4830 }
4831 AbsoluteLength::Rems(rems) => {
4832 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
4833 }
4834 }
4835 }
4836 // We currently use single-line and auto-height editors in UI contexts,
4837 // so we don't want to scale everything with the buffer font size, as it
4838 // ends up looking off.
4839 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
4840 }
4841 }
4842}
4843
4844impl Element for EditorElement {
4845 type RequestLayoutState = ();
4846 type PrepaintState = EditorLayout;
4847
4848 fn id(&self) -> Option<ElementId> {
4849 None
4850 }
4851
4852 fn request_layout(
4853 &mut self,
4854 _: Option<&GlobalElementId>,
4855 cx: &mut WindowContext,
4856 ) -> (gpui::LayoutId, ()) {
4857 let rem_size = self.rem_size(cx);
4858 cx.with_rem_size(rem_size, |cx| {
4859 self.editor.update(cx, |editor, cx| {
4860 editor.set_style(self.style.clone(), cx);
4861
4862 let layout_id = match editor.mode {
4863 EditorMode::SingleLine { auto_width } => {
4864 let rem_size = cx.rem_size();
4865
4866 let height = self.style.text.line_height_in_pixels(rem_size);
4867 if auto_width {
4868 let editor_handle = cx.view().clone();
4869 let style = self.style.clone();
4870 cx.request_measured_layout(Style::default(), move |_, _, cx| {
4871 let editor_snapshot =
4872 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
4873 let line = Self::layout_lines(
4874 DisplayRow(0)..DisplayRow(1),
4875 &[],
4876 &editor_snapshot,
4877 &style,
4878 px(f32::MAX),
4879 cx,
4880 )
4881 .pop()
4882 .unwrap();
4883
4884 let font_id = cx.text_system().resolve_font(&style.text.font());
4885 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4886 let em_width = cx
4887 .text_system()
4888 .typographic_bounds(font_id, font_size, 'm')
4889 .unwrap()
4890 .size
4891 .width;
4892
4893 size(line.width + em_width, height)
4894 })
4895 } else {
4896 let mut style = Style::default();
4897 style.size.height = height.into();
4898 style.size.width = relative(1.).into();
4899 cx.request_layout(style, None)
4900 }
4901 }
4902 EditorMode::AutoHeight { max_lines } => {
4903 let editor_handle = cx.view().clone();
4904 let max_line_number_width =
4905 self.max_line_number_width(&editor.snapshot(cx), cx);
4906 cx.request_measured_layout(
4907 Style::default(),
4908 move |known_dimensions, available_space, cx| {
4909 editor_handle
4910 .update(cx, |editor, cx| {
4911 compute_auto_height_layout(
4912 editor,
4913 max_lines,
4914 max_line_number_width,
4915 known_dimensions,
4916 available_space.width,
4917 cx,
4918 )
4919 })
4920 .unwrap_or_default()
4921 },
4922 )
4923 }
4924 EditorMode::Full => {
4925 let mut style = Style::default();
4926 style.size.width = relative(1.).into();
4927 style.size.height = relative(1.).into();
4928 cx.request_layout(style, None)
4929 }
4930 };
4931
4932 (layout_id, ())
4933 })
4934 })
4935 }
4936
4937 fn prepaint(
4938 &mut self,
4939 _: Option<&GlobalElementId>,
4940 bounds: Bounds<Pixels>,
4941 _: &mut Self::RequestLayoutState,
4942 cx: &mut WindowContext,
4943 ) -> Self::PrepaintState {
4944 let text_style = TextStyleRefinement {
4945 font_size: Some(self.style.text.font_size),
4946 line_height: Some(self.style.text.line_height),
4947 ..Default::default()
4948 };
4949 let focus_handle = self.editor.focus_handle(cx);
4950 cx.set_view_id(self.editor.entity_id());
4951 cx.set_focus_handle(&focus_handle);
4952
4953 let rem_size = self.rem_size(cx);
4954 cx.with_rem_size(rem_size, |cx| {
4955 cx.with_text_style(Some(text_style), |cx| {
4956 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
4957 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
4958 let style = self.style.clone();
4959
4960 let font_id = cx.text_system().resolve_font(&style.text.font());
4961 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4962 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4963 let em_width = cx
4964 .text_system()
4965 .typographic_bounds(font_id, font_size, 'm')
4966 .unwrap()
4967 .size
4968 .width;
4969 let em_advance = cx
4970 .text_system()
4971 .advance(font_id, font_size, 'm')
4972 .unwrap()
4973 .width;
4974
4975 let gutter_dimensions = snapshot.gutter_dimensions(
4976 font_id,
4977 font_size,
4978 em_width,
4979 self.max_line_number_width(&snapshot, cx),
4980 cx,
4981 );
4982 let text_width = bounds.size.width - gutter_dimensions.width;
4983
4984 let right_margin = if snapshot.mode == EditorMode::Full {
4985 EditorElement::SCROLLBAR_WIDTH
4986 } else {
4987 px(0.)
4988 };
4989 let overscroll = size(em_width + right_margin, px(0.));
4990
4991 let editor_width =
4992 text_width - gutter_dimensions.margin - overscroll.width - em_width;
4993
4994 snapshot = self.editor.update(cx, |editor, cx| {
4995 editor.last_bounds = Some(bounds);
4996 editor.gutter_dimensions = gutter_dimensions;
4997 editor.set_visible_line_count(bounds.size.height / line_height, cx);
4998
4999 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
5000 snapshot
5001 } else {
5002 let wrap_width = match editor.soft_wrap_mode(cx) {
5003 SoftWrap::None => None,
5004 SoftWrap::PreferLine => {
5005 Some((MAX_LINE_LEN / 2) as f32 * em_advance)
5006 }
5007 SoftWrap::EditorWidth => Some(editor_width),
5008 SoftWrap::Column(column) => Some(column as f32 * em_advance),
5009 SoftWrap::Bounded(column) => {
5010 Some(editor_width.min(column as f32 * em_advance))
5011 }
5012 };
5013
5014 if editor.set_wrap_width(wrap_width, cx) {
5015 editor.snapshot(cx)
5016 } else {
5017 snapshot
5018 }
5019 }
5020 });
5021
5022 let wrap_guides = self
5023 .editor
5024 .read(cx)
5025 .wrap_guides(cx)
5026 .iter()
5027 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
5028 .collect::<SmallVec<[_; 2]>>();
5029
5030 let hitbox = cx.insert_hitbox(bounds, false);
5031 let gutter_hitbox =
5032 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
5033 let text_hitbox = cx.insert_hitbox(
5034 Bounds {
5035 origin: gutter_hitbox.upper_right(),
5036 size: size(text_width, bounds.size.height),
5037 },
5038 false,
5039 );
5040 // Offset the content_bounds from the text_bounds by the gutter margin (which
5041 // is roughly half a character wide) to make hit testing work more like how we want.
5042 let content_origin =
5043 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
5044
5045 let height_in_lines = bounds.size.height / line_height;
5046 let max_row = snapshot.max_point().row().as_f32();
5047 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
5048 (max_row - height_in_lines + 1.).max(0.)
5049 } else {
5050 let settings = EditorSettings::get_global(cx);
5051 match settings.scroll_beyond_last_line {
5052 ScrollBeyondLastLine::OnePage => max_row,
5053 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
5054 ScrollBeyondLastLine::VerticalScrollMargin => {
5055 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
5056 .max(0.)
5057 }
5058 }
5059 };
5060
5061 let mut autoscroll_request = None;
5062 let mut autoscroll_containing_element = false;
5063 let mut autoscroll_horizontally = false;
5064 self.editor.update(cx, |editor, cx| {
5065 autoscroll_request = editor.autoscroll_request();
5066 autoscroll_containing_element =
5067 autoscroll_request.is_some() || editor.has_pending_selection();
5068 autoscroll_horizontally =
5069 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
5070 snapshot = editor.snapshot(cx);
5071 });
5072
5073 let mut scroll_position = snapshot.scroll_position();
5074 // The scroll position is a fractional point, the whole number of which represents
5075 // the top of the window in terms of display rows.
5076 let start_row = DisplayRow(scroll_position.y as u32);
5077 let max_row = snapshot.max_point().row();
5078 let end_row = cmp::min(
5079 (scroll_position.y + height_in_lines).ceil() as u32,
5080 max_row.next_row().0,
5081 );
5082 let end_row = DisplayRow(end_row);
5083
5084 let buffer_rows = snapshot
5085 .buffer_rows(start_row)
5086 .take((start_row..end_row).len())
5087 .collect::<Vec<_>>();
5088
5089 let start_anchor = if start_row == Default::default() {
5090 Anchor::min()
5091 } else {
5092 snapshot.buffer_snapshot.anchor_before(
5093 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
5094 )
5095 };
5096 let end_anchor = if end_row > max_row {
5097 Anchor::max()
5098 } else {
5099 snapshot.buffer_snapshot.anchor_before(
5100 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
5101 )
5102 };
5103
5104 let highlighted_rows = self
5105 .editor
5106 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
5107 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
5108 start_anchor..end_anchor,
5109 &snapshot.display_snapshot,
5110 cx.theme().colors(),
5111 );
5112 let highlighted_gutter_ranges =
5113 self.editor.read(cx).gutter_highlights_in_range(
5114 start_anchor..end_anchor,
5115 &snapshot.display_snapshot,
5116 cx,
5117 );
5118
5119 let redacted_ranges = self.editor.read(cx).redacted_ranges(
5120 start_anchor..end_anchor,
5121 &snapshot.display_snapshot,
5122 cx,
5123 );
5124
5125 let (selections, active_rows, newest_selection_head) = self.layout_selections(
5126 start_anchor,
5127 end_anchor,
5128 &snapshot,
5129 start_row,
5130 end_row,
5131 cx,
5132 );
5133
5134 let line_numbers = self.layout_line_numbers(
5135 start_row..end_row,
5136 buffer_rows.iter().copied(),
5137 &active_rows,
5138 newest_selection_head,
5139 &snapshot,
5140 cx,
5141 );
5142
5143 let mut gutter_fold_toggles =
5144 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5145 self.layout_gutter_fold_toggles(
5146 start_row..end_row,
5147 buffer_rows.iter().copied(),
5148 &active_rows,
5149 &snapshot,
5150 cx,
5151 )
5152 });
5153 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5154 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
5155 });
5156
5157 let display_hunks = self.layout_gutter_git_hunks(
5158 line_height,
5159 &gutter_hitbox,
5160 start_row..end_row,
5161 &snapshot,
5162 cx,
5163 );
5164
5165 let mut max_visible_line_width = Pixels::ZERO;
5166 let mut line_layouts = Self::layout_lines(
5167 start_row..end_row,
5168 &line_numbers,
5169 &snapshot,
5170 &self.style,
5171 editor_width,
5172 cx,
5173 );
5174 for line_with_invisibles in &line_layouts {
5175 if line_with_invisibles.width > max_visible_line_width {
5176 max_visible_line_width = line_with_invisibles.width;
5177 }
5178 }
5179
5180 let longest_line_width =
5181 layout_line(snapshot.longest_row(), &snapshot, &style, editor_width, cx)
5182 .width;
5183 let mut scroll_width =
5184 longest_line_width.max(max_visible_line_width) + overscroll.width;
5185
5186 let blocks = cx.with_element_namespace("blocks", |cx| {
5187 self.render_blocks(
5188 start_row..end_row,
5189 &snapshot,
5190 &hitbox,
5191 &text_hitbox,
5192 editor_width,
5193 &mut scroll_width,
5194 &gutter_dimensions,
5195 em_width,
5196 gutter_dimensions.full_width(),
5197 line_height,
5198 &line_layouts,
5199 cx,
5200 )
5201 });
5202 let mut blocks = match blocks {
5203 Ok(blocks) => blocks,
5204 Err(resized_blocks) => {
5205 self.editor.update(cx, |editor, cx| {
5206 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
5207 });
5208 return self.prepaint(None, bounds, &mut (), cx);
5209 }
5210 };
5211
5212 let start_buffer_row =
5213 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
5214 let end_buffer_row =
5215 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
5216
5217 let scroll_max = point(
5218 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5219 max_row.as_f32(),
5220 );
5221
5222 self.editor.update(cx, |editor, cx| {
5223 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5224
5225 let autoscrolled = if autoscroll_horizontally {
5226 editor.autoscroll_horizontally(
5227 start_row,
5228 text_hitbox.size.width,
5229 scroll_width,
5230 em_width,
5231 &line_layouts,
5232 cx,
5233 )
5234 } else {
5235 false
5236 };
5237
5238 if clamped || autoscrolled {
5239 snapshot = editor.snapshot(cx);
5240 scroll_position = snapshot.scroll_position();
5241 }
5242 });
5243
5244 let scroll_pixel_position = point(
5245 scroll_position.x * em_width,
5246 scroll_position.y * line_height,
5247 );
5248
5249 let indent_guides = self.layout_indent_guides(
5250 content_origin,
5251 text_hitbox.origin,
5252 start_buffer_row..end_buffer_row,
5253 scroll_pixel_position,
5254 line_height,
5255 &snapshot,
5256 cx,
5257 );
5258
5259 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5260 self.prepaint_crease_trailers(
5261 crease_trailers,
5262 &line_layouts,
5263 line_height,
5264 content_origin,
5265 scroll_pixel_position,
5266 em_width,
5267 cx,
5268 )
5269 });
5270
5271 let mut inline_blame = None;
5272 if let Some(newest_selection_head) = newest_selection_head {
5273 let display_row = newest_selection_head.row();
5274 if (start_row..end_row).contains(&display_row) {
5275 let line_ix = display_row.minus(start_row) as usize;
5276 let line_layout = &line_layouts[line_ix];
5277 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
5278 inline_blame = self.layout_inline_blame(
5279 display_row,
5280 &snapshot.display_snapshot,
5281 line_layout,
5282 crease_trailer_layout,
5283 em_width,
5284 content_origin,
5285 scroll_pixel_position,
5286 line_height,
5287 cx,
5288 );
5289 }
5290 }
5291
5292 let blamed_display_rows = self.layout_blame_entries(
5293 buffer_rows.into_iter(),
5294 em_width,
5295 scroll_position,
5296 line_height,
5297 &gutter_hitbox,
5298 gutter_dimensions.git_blame_entries_width,
5299 cx,
5300 );
5301
5302 let scroll_max = point(
5303 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5304 max_scroll_top,
5305 );
5306
5307 self.editor.update(cx, |editor, cx| {
5308 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5309
5310 let autoscrolled = if autoscroll_horizontally {
5311 editor.autoscroll_horizontally(
5312 start_row,
5313 text_hitbox.size.width,
5314 scroll_width,
5315 em_width,
5316 &line_layouts,
5317 cx,
5318 )
5319 } else {
5320 false
5321 };
5322
5323 if clamped || autoscrolled {
5324 snapshot = editor.snapshot(cx);
5325 scroll_position = snapshot.scroll_position();
5326 }
5327 });
5328
5329 let line_elements = self.prepaint_lines(
5330 start_row,
5331 &mut line_layouts,
5332 line_height,
5333 scroll_pixel_position,
5334 content_origin,
5335 cx,
5336 );
5337
5338 cx.with_element_namespace("blocks", |cx| {
5339 self.layout_blocks(
5340 &mut blocks,
5341 &hitbox,
5342 line_height,
5343 scroll_pixel_position,
5344 cx,
5345 );
5346 });
5347
5348 let cursors = self.collect_cursors(&snapshot, cx);
5349 let visible_row_range = start_row..end_row;
5350 let non_visible_cursors = cursors
5351 .iter()
5352 .any(move |c| !visible_row_range.contains(&c.0.row()));
5353
5354 let visible_cursors = self.layout_visible_cursors(
5355 &snapshot,
5356 &selections,
5357 start_row..end_row,
5358 &line_layouts,
5359 &text_hitbox,
5360 content_origin,
5361 scroll_position,
5362 scroll_pixel_position,
5363 line_height,
5364 em_width,
5365 autoscroll_containing_element,
5366 cx,
5367 );
5368
5369 let scrollbar_layout = self.layout_scrollbar(
5370 &snapshot,
5371 bounds,
5372 scroll_position,
5373 height_in_lines,
5374 non_visible_cursors,
5375 cx,
5376 );
5377
5378 let gutter_settings = EditorSettings::get_global(cx).gutter;
5379
5380 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
5381 editor
5382 .expanded_hunks
5383 .hunks(false)
5384 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
5385 .map(|expanded_hunk| {
5386 let start_row = expanded_hunk
5387 .hunk_range
5388 .start
5389 .to_display_point(&snapshot)
5390 .row();
5391 (start_row, expanded_hunk.clone())
5392 })
5393 .collect::<HashMap<_, _>>()
5394 });
5395
5396 let rows_with_hunk_bounds = display_hunks
5397 .iter()
5398 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
5399 .fold(
5400 HashMap::default(),
5401 |mut rows_with_hunk_bounds, (hunk, bounds)| {
5402 match hunk {
5403 DisplayDiffHunk::Folded { display_row } => {
5404 rows_with_hunk_bounds.insert(*display_row, bounds);
5405 }
5406 DisplayDiffHunk::Unfolded {
5407 display_row_range, ..
5408 } => {
5409 for display_row in display_row_range.iter_rows() {
5410 rows_with_hunk_bounds.insert(display_row, bounds);
5411 }
5412 }
5413 }
5414 rows_with_hunk_bounds
5415 },
5416 );
5417 let mut _context_menu_visible = false;
5418 let mut code_actions_indicator = None;
5419 if let Some(newest_selection_head) = newest_selection_head {
5420 if (start_row..end_row).contains(&newest_selection_head.row()) {
5421 _context_menu_visible = self.layout_context_menu(
5422 line_height,
5423 &hitbox,
5424 &text_hitbox,
5425 content_origin,
5426 start_row,
5427 scroll_pixel_position,
5428 &line_layouts,
5429 newest_selection_head,
5430 gutter_dimensions.width - gutter_dimensions.left_padding,
5431 cx,
5432 );
5433
5434 let show_code_actions = snapshot
5435 .show_code_actions
5436 .unwrap_or(gutter_settings.code_actions);
5437 if show_code_actions {
5438 let newest_selection_point =
5439 newest_selection_head.to_point(&snapshot.display_snapshot);
5440 let newest_selection_display_row =
5441 newest_selection_point.to_display_point(&snapshot).row();
5442 if !expanded_add_hunks_by_rows
5443 .contains_key(&newest_selection_display_row)
5444 {
5445 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
5446 MultiBufferRow(newest_selection_point.row),
5447 );
5448 if let Some((buffer, range)) = buffer {
5449 let buffer_id = buffer.remote_id();
5450 let row = range.start.row;
5451 let has_test_indicator = self
5452 .editor
5453 .read(cx)
5454 .tasks
5455 .contains_key(&(buffer_id, row));
5456
5457 if !has_test_indicator {
5458 code_actions_indicator = self
5459 .layout_code_actions_indicator(
5460 line_height,
5461 newest_selection_head,
5462 scroll_pixel_position,
5463 &gutter_dimensions,
5464 &gutter_hitbox,
5465 &rows_with_hunk_bounds,
5466 cx,
5467 );
5468 }
5469 }
5470 }
5471 }
5472 }
5473 }
5474
5475 let test_indicators = if gutter_settings.runnables {
5476 self.layout_run_indicators(
5477 line_height,
5478 start_row..end_row,
5479 scroll_pixel_position,
5480 &gutter_dimensions,
5481 &gutter_hitbox,
5482 &rows_with_hunk_bounds,
5483 &snapshot,
5484 cx,
5485 )
5486 } else {
5487 Vec::new()
5488 };
5489 let close_indicators = self.layout_hunk_diff_close_indicators(
5490 line_height,
5491 scroll_pixel_position,
5492 &gutter_dimensions,
5493 &gutter_hitbox,
5494 &rows_with_hunk_bounds,
5495 expanded_add_hunks_by_rows,
5496 cx,
5497 );
5498
5499 self.layout_signature_help(
5500 &hitbox,
5501 content_origin,
5502 scroll_pixel_position,
5503 newest_selection_head,
5504 start_row,
5505 &line_layouts,
5506 line_height,
5507 em_width,
5508 cx,
5509 );
5510
5511 if !cx.has_active_drag() {
5512 self.layout_hover_popovers(
5513 &snapshot,
5514 &hitbox,
5515 &text_hitbox,
5516 start_row..end_row,
5517 content_origin,
5518 scroll_pixel_position,
5519 &line_layouts,
5520 line_height,
5521 em_width,
5522 cx,
5523 );
5524 }
5525
5526 let mouse_context_menu =
5527 self.layout_mouse_context_menu(&snapshot, start_row..end_row, cx);
5528
5529 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5530 self.prepaint_gutter_fold_toggles(
5531 &mut gutter_fold_toggles,
5532 line_height,
5533 &gutter_dimensions,
5534 gutter_settings,
5535 scroll_pixel_position,
5536 &gutter_hitbox,
5537 cx,
5538 )
5539 });
5540
5541 let invisible_symbol_font_size = font_size / 2.;
5542 let tab_invisible = cx
5543 .text_system()
5544 .shape_line(
5545 "→".into(),
5546 invisible_symbol_font_size,
5547 &[TextRun {
5548 len: "→".len(),
5549 font: self.style.text.font(),
5550 color: cx.theme().colors().editor_invisible,
5551 background_color: None,
5552 underline: None,
5553 strikethrough: None,
5554 }],
5555 )
5556 .unwrap();
5557 let space_invisible = cx
5558 .text_system()
5559 .shape_line(
5560 "•".into(),
5561 invisible_symbol_font_size,
5562 &[TextRun {
5563 len: "•".len(),
5564 font: self.style.text.font(),
5565 color: cx.theme().colors().editor_invisible,
5566 background_color: None,
5567 underline: None,
5568 strikethrough: None,
5569 }],
5570 )
5571 .unwrap();
5572
5573 EditorLayout {
5574 mode: snapshot.mode,
5575 position_map: Rc::new(PositionMap {
5576 size: bounds.size,
5577 scroll_pixel_position,
5578 scroll_max,
5579 line_layouts,
5580 line_height,
5581 em_width,
5582 em_advance,
5583 snapshot,
5584 }),
5585 visible_display_row_range: start_row..end_row,
5586 wrap_guides,
5587 indent_guides,
5588 hitbox,
5589 text_hitbox,
5590 gutter_hitbox,
5591 gutter_dimensions,
5592 display_hunks,
5593 content_origin,
5594 scrollbar_layout,
5595 active_rows,
5596 highlighted_rows,
5597 highlighted_ranges,
5598 highlighted_gutter_ranges,
5599 redacted_ranges,
5600 line_elements,
5601 line_numbers,
5602 blamed_display_rows,
5603 inline_blame,
5604 blocks,
5605 cursors,
5606 visible_cursors,
5607 selections,
5608 mouse_context_menu,
5609 test_indicators,
5610 close_indicators,
5611 code_actions_indicator,
5612 gutter_fold_toggles,
5613 crease_trailers,
5614 tab_invisible,
5615 space_invisible,
5616 }
5617 })
5618 })
5619 })
5620 }
5621
5622 fn paint(
5623 &mut self,
5624 _: Option<&GlobalElementId>,
5625 bounds: Bounds<gpui::Pixels>,
5626 _: &mut Self::RequestLayoutState,
5627 layout: &mut Self::PrepaintState,
5628 cx: &mut WindowContext,
5629 ) {
5630 let focus_handle = self.editor.focus_handle(cx);
5631 let key_context = self.editor.update(cx, |editor, cx| editor.key_context(cx));
5632 cx.set_key_context(key_context);
5633 cx.handle_input(
5634 &focus_handle,
5635 ElementInputHandler::new(bounds, self.editor.clone()),
5636 );
5637 self.register_actions(cx);
5638 self.register_key_listeners(cx, layout);
5639
5640 let text_style = TextStyleRefinement {
5641 font_size: Some(self.style.text.font_size),
5642 line_height: Some(self.style.text.line_height),
5643 ..Default::default()
5644 };
5645 let mouse_position = cx.mouse_position();
5646 let hovered_hunk = layout
5647 .display_hunks
5648 .iter()
5649 .find_map(|(hunk, hunk_hitbox)| match hunk {
5650 DisplayDiffHunk::Folded { .. } => None,
5651 DisplayDiffHunk::Unfolded {
5652 diff_base_byte_range,
5653 multi_buffer_range,
5654 status,
5655 ..
5656 } => {
5657 if hunk_hitbox
5658 .as_ref()
5659 .map(|hitbox| hitbox.contains(&mouse_position))
5660 .unwrap_or(false)
5661 {
5662 Some(HoveredHunk {
5663 status: *status,
5664 multi_buffer_range: multi_buffer_range.clone(),
5665 diff_base_byte_range: diff_base_byte_range.clone(),
5666 })
5667 } else {
5668 None
5669 }
5670 }
5671 });
5672 let rem_size = self.rem_size(cx);
5673 cx.with_rem_size(rem_size, |cx| {
5674 cx.with_text_style(Some(text_style), |cx| {
5675 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
5676 self.paint_mouse_listeners(layout, hovered_hunk, cx);
5677 self.paint_background(layout, cx);
5678 self.paint_indent_guides(layout, cx);
5679
5680 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5681 self.paint_blamed_display_rows(layout, cx);
5682 self.paint_line_numbers(layout, cx);
5683 }
5684
5685 self.paint_text(layout, cx);
5686
5687 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5688 self.paint_gutter_highlights(layout, cx);
5689 self.paint_gutter_indicators(layout, cx);
5690 }
5691
5692 if !layout.blocks.is_empty() {
5693 cx.with_element_namespace("blocks", |cx| {
5694 self.paint_blocks(layout, cx);
5695 });
5696 }
5697
5698 self.paint_scrollbar(layout, cx);
5699 self.paint_mouse_context_menu(layout, cx);
5700 });
5701 })
5702 })
5703 }
5704}
5705
5706pub(super) fn gutter_bounds(
5707 editor_bounds: Bounds<Pixels>,
5708 gutter_dimensions: GutterDimensions,
5709) -> Bounds<Pixels> {
5710 Bounds {
5711 origin: editor_bounds.origin,
5712 size: size(gutter_dimensions.width, editor_bounds.size.height),
5713 }
5714}
5715
5716impl IntoElement for EditorElement {
5717 type Element = Self;
5718
5719 fn into_element(self) -> Self::Element {
5720 self
5721 }
5722}
5723
5724pub struct EditorLayout {
5725 position_map: Rc<PositionMap>,
5726 hitbox: Hitbox,
5727 text_hitbox: Hitbox,
5728 gutter_hitbox: Hitbox,
5729 gutter_dimensions: GutterDimensions,
5730 content_origin: gpui::Point<Pixels>,
5731 scrollbar_layout: Option<ScrollbarLayout>,
5732 mode: EditorMode,
5733 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
5734 indent_guides: Option<Vec<IndentGuideLayout>>,
5735 visible_display_row_range: Range<DisplayRow>,
5736 active_rows: BTreeMap<DisplayRow, bool>,
5737 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
5738 line_elements: SmallVec<[AnyElement; 1]>,
5739 line_numbers: Vec<Option<ShapedLine>>,
5740 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
5741 blamed_display_rows: Option<Vec<AnyElement>>,
5742 inline_blame: Option<AnyElement>,
5743 blocks: Vec<BlockLayout>,
5744 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5745 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5746 redacted_ranges: Vec<Range<DisplayPoint>>,
5747 cursors: Vec<(DisplayPoint, Hsla)>,
5748 visible_cursors: Vec<CursorLayout>,
5749 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
5750 code_actions_indicator: Option<AnyElement>,
5751 test_indicators: Vec<AnyElement>,
5752 close_indicators: Vec<AnyElement>,
5753 gutter_fold_toggles: Vec<Option<AnyElement>>,
5754 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
5755 mouse_context_menu: Option<AnyElement>,
5756 tab_invisible: ShapedLine,
5757 space_invisible: ShapedLine,
5758}
5759
5760impl EditorLayout {
5761 fn line_end_overshoot(&self) -> Pixels {
5762 0.15 * self.position_map.line_height
5763 }
5764}
5765
5766struct ColoredRange<T> {
5767 start: T,
5768 end: T,
5769 color: Hsla,
5770}
5771
5772#[derive(Clone)]
5773struct ScrollbarLayout {
5774 hitbox: Hitbox,
5775 visible_row_range: Range<f32>,
5776 visible: bool,
5777 row_height: Pixels,
5778 thumb_height: Pixels,
5779}
5780
5781impl ScrollbarLayout {
5782 const BORDER_WIDTH: Pixels = px(1.0);
5783 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
5784 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
5785 const MIN_THUMB_HEIGHT: Pixels = px(20.0);
5786
5787 fn thumb_bounds(&self) -> Bounds<Pixels> {
5788 let thumb_top = self.y_for_row(self.visible_row_range.start);
5789 let thumb_bottom = thumb_top + self.thumb_height;
5790 Bounds::from_corners(
5791 point(self.hitbox.left(), thumb_top),
5792 point(self.hitbox.right(), thumb_bottom),
5793 )
5794 }
5795
5796 fn y_for_row(&self, row: f32) -> Pixels {
5797 self.hitbox.top() + row * self.row_height
5798 }
5799
5800 fn marker_quads_for_ranges(
5801 &self,
5802 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
5803 column: Option<usize>,
5804 ) -> Vec<PaintQuad> {
5805 struct MinMax {
5806 min: Pixels,
5807 max: Pixels,
5808 }
5809 let (x_range, height_limit) = if let Some(column) = column {
5810 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
5811 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
5812 let end = start + column_width;
5813 (
5814 Range { start, end },
5815 MinMax {
5816 min: Self::MIN_MARKER_HEIGHT,
5817 max: px(f32::MAX),
5818 },
5819 )
5820 } else {
5821 (
5822 Range {
5823 start: Self::BORDER_WIDTH,
5824 end: self.hitbox.size.width,
5825 },
5826 MinMax {
5827 min: Self::LINE_MARKER_HEIGHT,
5828 max: Self::LINE_MARKER_HEIGHT,
5829 },
5830 )
5831 };
5832
5833 let row_to_y = |row: DisplayRow| row.as_f32() * self.row_height;
5834 let mut pixel_ranges = row_ranges
5835 .into_iter()
5836 .map(|range| {
5837 let start_y = row_to_y(range.start);
5838 let end_y = row_to_y(range.end)
5839 + self.row_height.max(height_limit.min).min(height_limit.max);
5840 ColoredRange {
5841 start: start_y,
5842 end: end_y,
5843 color: range.color,
5844 }
5845 })
5846 .peekable();
5847
5848 let mut quads = Vec::new();
5849 while let Some(mut pixel_range) = pixel_ranges.next() {
5850 while let Some(next_pixel_range) = pixel_ranges.peek() {
5851 if pixel_range.end >= next_pixel_range.start - px(1.0)
5852 && pixel_range.color == next_pixel_range.color
5853 {
5854 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
5855 pixel_ranges.next();
5856 } else {
5857 break;
5858 }
5859 }
5860
5861 let bounds = Bounds::from_corners(
5862 point(x_range.start, pixel_range.start),
5863 point(x_range.end, pixel_range.end),
5864 );
5865 quads.push(quad(
5866 bounds,
5867 Corners::default(),
5868 pixel_range.color,
5869 Edges::default(),
5870 Hsla::transparent_black(),
5871 ));
5872 }
5873
5874 quads
5875 }
5876}
5877
5878struct CreaseTrailerLayout {
5879 element: AnyElement,
5880 bounds: Bounds<Pixels>,
5881}
5882
5883struct PositionMap {
5884 size: Size<Pixels>,
5885 line_height: Pixels,
5886 scroll_pixel_position: gpui::Point<Pixels>,
5887 scroll_max: gpui::Point<f32>,
5888 em_width: Pixels,
5889 em_advance: Pixels,
5890 line_layouts: Vec<LineWithInvisibles>,
5891 snapshot: EditorSnapshot,
5892}
5893
5894#[derive(Debug, Copy, Clone)]
5895pub struct PointForPosition {
5896 pub previous_valid: DisplayPoint,
5897 pub next_valid: DisplayPoint,
5898 pub exact_unclipped: DisplayPoint,
5899 pub column_overshoot_after_line_end: u32,
5900}
5901
5902impl PointForPosition {
5903 pub fn as_valid(&self) -> Option<DisplayPoint> {
5904 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
5905 Some(self.previous_valid)
5906 } else {
5907 None
5908 }
5909 }
5910}
5911
5912impl PositionMap {
5913 fn point_for_position(
5914 &self,
5915 text_bounds: Bounds<Pixels>,
5916 position: gpui::Point<Pixels>,
5917 ) -> PointForPosition {
5918 let scroll_position = self.snapshot.scroll_position();
5919 let position = position - text_bounds.origin;
5920 let y = position.y.max(px(0.)).min(self.size.height);
5921 let x = position.x + (scroll_position.x * self.em_width);
5922 let row = ((y / self.line_height) + scroll_position.y) as u32;
5923
5924 let (column, x_overshoot_after_line_end) = if let Some(line) = self
5925 .line_layouts
5926 .get(row as usize - scroll_position.y as usize)
5927 {
5928 if let Some(ix) = line.index_for_x(x) {
5929 (ix as u32, px(0.))
5930 } else {
5931 (line.len as u32, px(0.).max(x - line.width))
5932 }
5933 } else {
5934 (0, x)
5935 };
5936
5937 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
5938 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
5939 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
5940
5941 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
5942 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
5943 PointForPosition {
5944 previous_valid,
5945 next_valid,
5946 exact_unclipped,
5947 column_overshoot_after_line_end,
5948 }
5949 }
5950}
5951
5952struct BlockLayout {
5953 id: BlockId,
5954 row: Option<DisplayRow>,
5955 element: AnyElement,
5956 available_space: Size<AvailableSpace>,
5957 style: BlockStyle,
5958}
5959
5960fn layout_line(
5961 row: DisplayRow,
5962 snapshot: &EditorSnapshot,
5963 style: &EditorStyle,
5964 text_width: Pixels,
5965 cx: &mut WindowContext,
5966) -> LineWithInvisibles {
5967 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
5968 LineWithInvisibles::from_chunks(
5969 chunks,
5970 &style.text,
5971 MAX_LINE_LEN,
5972 1,
5973 &[],
5974 snapshot.mode,
5975 text_width,
5976 cx,
5977 )
5978 .pop()
5979 .unwrap()
5980}
5981
5982#[derive(Debug)]
5983pub struct IndentGuideLayout {
5984 origin: gpui::Point<Pixels>,
5985 length: Pixels,
5986 single_indent_width: Pixels,
5987 depth: u32,
5988 active: bool,
5989 settings: IndentGuideSettings,
5990}
5991
5992pub struct CursorLayout {
5993 origin: gpui::Point<Pixels>,
5994 block_width: Pixels,
5995 line_height: Pixels,
5996 color: Hsla,
5997 shape: CursorShape,
5998 block_text: Option<ShapedLine>,
5999 cursor_name: Option<AnyElement>,
6000}
6001
6002#[derive(Debug)]
6003pub struct CursorName {
6004 string: SharedString,
6005 color: Hsla,
6006 is_top_row: bool,
6007}
6008
6009impl CursorLayout {
6010 pub fn new(
6011 origin: gpui::Point<Pixels>,
6012 block_width: Pixels,
6013 line_height: Pixels,
6014 color: Hsla,
6015 shape: CursorShape,
6016 block_text: Option<ShapedLine>,
6017 ) -> CursorLayout {
6018 CursorLayout {
6019 origin,
6020 block_width,
6021 line_height,
6022 color,
6023 shape,
6024 block_text,
6025 cursor_name: None,
6026 }
6027 }
6028
6029 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6030 Bounds {
6031 origin: self.origin + origin,
6032 size: size(self.block_width, self.line_height),
6033 }
6034 }
6035
6036 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6037 match self.shape {
6038 CursorShape::Bar => Bounds {
6039 origin: self.origin + origin,
6040 size: size(px(2.0), self.line_height),
6041 },
6042 CursorShape::Block | CursorShape::Hollow => Bounds {
6043 origin: self.origin + origin,
6044 size: size(self.block_width, self.line_height),
6045 },
6046 CursorShape::Underscore => Bounds {
6047 origin: self.origin
6048 + origin
6049 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
6050 size: size(self.block_width, px(2.0)),
6051 },
6052 }
6053 }
6054
6055 pub fn layout(
6056 &mut self,
6057 origin: gpui::Point<Pixels>,
6058 cursor_name: Option<CursorName>,
6059 cx: &mut WindowContext,
6060 ) {
6061 if let Some(cursor_name) = cursor_name {
6062 let bounds = self.bounds(origin);
6063 let text_size = self.line_height / 1.5;
6064
6065 let name_origin = if cursor_name.is_top_row {
6066 point(bounds.right() - px(1.), bounds.top())
6067 } else {
6068 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
6069 };
6070 let mut name_element = div()
6071 .bg(self.color)
6072 .text_size(text_size)
6073 .px_0p5()
6074 .line_height(text_size + px(2.))
6075 .text_color(cursor_name.color)
6076 .child(cursor_name.string.clone())
6077 .into_any_element();
6078
6079 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
6080
6081 self.cursor_name = Some(name_element);
6082 }
6083 }
6084
6085 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
6086 let bounds = self.bounds(origin);
6087
6088 //Draw background or border quad
6089 let cursor = if matches!(self.shape, CursorShape::Hollow) {
6090 outline(bounds, self.color)
6091 } else {
6092 fill(bounds, self.color)
6093 };
6094
6095 if let Some(name) = &mut self.cursor_name {
6096 name.paint(cx);
6097 }
6098
6099 cx.paint_quad(cursor);
6100
6101 if let Some(block_text) = &self.block_text {
6102 block_text
6103 .paint(self.origin + origin, self.line_height, cx)
6104 .log_err();
6105 }
6106 }
6107
6108 pub fn shape(&self) -> CursorShape {
6109 self.shape
6110 }
6111}
6112
6113#[derive(Debug)]
6114pub struct HighlightedRange {
6115 pub start_y: Pixels,
6116 pub line_height: Pixels,
6117 pub lines: Vec<HighlightedRangeLine>,
6118 pub color: Hsla,
6119 pub corner_radius: Pixels,
6120}
6121
6122#[derive(Debug)]
6123pub struct HighlightedRangeLine {
6124 pub start_x: Pixels,
6125 pub end_x: Pixels,
6126}
6127
6128impl HighlightedRange {
6129 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
6130 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
6131 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
6132 self.paint_lines(
6133 self.start_y + self.line_height,
6134 &self.lines[1..],
6135 bounds,
6136 cx,
6137 );
6138 } else {
6139 self.paint_lines(self.start_y, &self.lines, bounds, cx);
6140 }
6141 }
6142
6143 fn paint_lines(
6144 &self,
6145 start_y: Pixels,
6146 lines: &[HighlightedRangeLine],
6147 _bounds: Bounds<Pixels>,
6148 cx: &mut WindowContext,
6149 ) {
6150 if lines.is_empty() {
6151 return;
6152 }
6153
6154 let first_line = lines.first().unwrap();
6155 let last_line = lines.last().unwrap();
6156
6157 let first_top_left = point(first_line.start_x, start_y);
6158 let first_top_right = point(first_line.end_x, start_y);
6159
6160 let curve_height = point(Pixels::ZERO, self.corner_radius);
6161 let curve_width = |start_x: Pixels, end_x: Pixels| {
6162 let max = (end_x - start_x) / 2.;
6163 let width = if max < self.corner_radius {
6164 max
6165 } else {
6166 self.corner_radius
6167 };
6168
6169 point(width, Pixels::ZERO)
6170 };
6171
6172 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
6173 let mut path = gpui::Path::new(first_top_right - top_curve_width);
6174 path.curve_to(first_top_right + curve_height, first_top_right);
6175
6176 let mut iter = lines.iter().enumerate().peekable();
6177 while let Some((ix, line)) = iter.next() {
6178 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
6179
6180 if let Some((_, next_line)) = iter.peek() {
6181 let next_top_right = point(next_line.end_x, bottom_right.y);
6182
6183 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
6184 Ordering::Equal => {
6185 path.line_to(bottom_right);
6186 }
6187 Ordering::Less => {
6188 let curve_width = curve_width(next_top_right.x, bottom_right.x);
6189 path.line_to(bottom_right - curve_height);
6190 if self.corner_radius > Pixels::ZERO {
6191 path.curve_to(bottom_right - curve_width, bottom_right);
6192 }
6193 path.line_to(next_top_right + curve_width);
6194 if self.corner_radius > Pixels::ZERO {
6195 path.curve_to(next_top_right + curve_height, next_top_right);
6196 }
6197 }
6198 Ordering::Greater => {
6199 let curve_width = curve_width(bottom_right.x, next_top_right.x);
6200 path.line_to(bottom_right - curve_height);
6201 if self.corner_radius > Pixels::ZERO {
6202 path.curve_to(bottom_right + curve_width, bottom_right);
6203 }
6204 path.line_to(next_top_right - curve_width);
6205 if self.corner_radius > Pixels::ZERO {
6206 path.curve_to(next_top_right + curve_height, next_top_right);
6207 }
6208 }
6209 }
6210 } else {
6211 let curve_width = curve_width(line.start_x, line.end_x);
6212 path.line_to(bottom_right - curve_height);
6213 if self.corner_radius > Pixels::ZERO {
6214 path.curve_to(bottom_right - curve_width, bottom_right);
6215 }
6216
6217 let bottom_left = point(line.start_x, bottom_right.y);
6218 path.line_to(bottom_left + curve_width);
6219 if self.corner_radius > Pixels::ZERO {
6220 path.curve_to(bottom_left - curve_height, bottom_left);
6221 }
6222 }
6223 }
6224
6225 if first_line.start_x > last_line.start_x {
6226 let curve_width = curve_width(last_line.start_x, first_line.start_x);
6227 let second_top_left = point(last_line.start_x, start_y + self.line_height);
6228 path.line_to(second_top_left + curve_height);
6229 if self.corner_radius > Pixels::ZERO {
6230 path.curve_to(second_top_left + curve_width, second_top_left);
6231 }
6232 let first_bottom_left = point(first_line.start_x, second_top_left.y);
6233 path.line_to(first_bottom_left - curve_width);
6234 if self.corner_radius > Pixels::ZERO {
6235 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
6236 }
6237 }
6238
6239 path.line_to(first_top_left + curve_height);
6240 if self.corner_radius > Pixels::ZERO {
6241 path.curve_to(first_top_left + top_curve_width, first_top_left);
6242 }
6243 path.line_to(first_top_right - top_curve_width);
6244
6245 cx.paint_path(path, self.color);
6246 }
6247}
6248
6249pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6250 (delta.pow(1.5) / 100.0).into()
6251}
6252
6253fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6254 (delta.pow(1.2) / 300.0).into()
6255}
6256
6257pub fn register_action<T: Action>(
6258 view: &View<Editor>,
6259 cx: &mut WindowContext,
6260 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
6261) {
6262 let view = view.clone();
6263 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
6264 let action = action.downcast_ref().unwrap();
6265 if phase == DispatchPhase::Bubble {
6266 view.update(cx, |editor, cx| {
6267 listener(editor, action, cx);
6268 })
6269 }
6270 })
6271}
6272
6273fn compute_auto_height_layout(
6274 editor: &mut Editor,
6275 max_lines: usize,
6276 max_line_number_width: Pixels,
6277 known_dimensions: Size<Option<Pixels>>,
6278 available_width: AvailableSpace,
6279 cx: &mut ViewContext<Editor>,
6280) -> Option<Size<Pixels>> {
6281 let width = known_dimensions.width.or({
6282 if let AvailableSpace::Definite(available_width) = available_width {
6283 Some(available_width)
6284 } else {
6285 None
6286 }
6287 })?;
6288 if let Some(height) = known_dimensions.height {
6289 return Some(size(width, height));
6290 }
6291
6292 let style = editor.style.as_ref().unwrap();
6293 let font_id = cx.text_system().resolve_font(&style.text.font());
6294 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6295 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6296 let em_width = cx
6297 .text_system()
6298 .typographic_bounds(font_id, font_size, 'm')
6299 .unwrap()
6300 .size
6301 .width;
6302
6303 let mut snapshot = editor.snapshot(cx);
6304 let gutter_dimensions =
6305 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
6306
6307 editor.gutter_dimensions = gutter_dimensions;
6308 let text_width = width - gutter_dimensions.width;
6309 let overscroll = size(em_width, px(0.));
6310
6311 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
6312 if editor.set_wrap_width(Some(editor_width), cx) {
6313 snapshot = editor.snapshot(cx);
6314 }
6315
6316 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
6317 let height = scroll_height
6318 .max(line_height)
6319 .min(line_height * max_lines as f32);
6320
6321 Some(size(width, height))
6322}
6323
6324#[cfg(test)]
6325mod tests {
6326 use super::*;
6327 use crate::{
6328 display_map::{BlockDisposition, BlockProperties},
6329 editor_tests::{init_test, update_test_language_settings},
6330 Editor, MultiBuffer,
6331 };
6332 use gpui::{TestAppContext, VisualTestContext};
6333 use language::language_settings;
6334 use log::info;
6335 use std::num::NonZeroU32;
6336 use ui::Context;
6337 use util::test::sample_text;
6338
6339 #[gpui::test]
6340 fn test_shape_line_numbers(cx: &mut TestAppContext) {
6341 init_test(cx, |_| {});
6342 let window = cx.add_window(|cx| {
6343 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6344 Editor::new(EditorMode::Full, buffer, None, true, cx)
6345 });
6346
6347 let editor = window.root(cx).unwrap();
6348 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6349 let element = EditorElement::new(&editor, style);
6350 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
6351
6352 let layouts = cx
6353 .update_window(*window, |_, cx| {
6354 element.layout_line_numbers(
6355 DisplayRow(0)..DisplayRow(6),
6356 (0..6).map(MultiBufferRow).map(Some),
6357 &Default::default(),
6358 Some(DisplayPoint::new(DisplayRow(0), 0)),
6359 &snapshot,
6360 cx,
6361 )
6362 })
6363 .unwrap();
6364 assert_eq!(layouts.len(), 6);
6365
6366 let relative_rows = window
6367 .update(cx, |editor, cx| {
6368 let snapshot = editor.snapshot(cx);
6369 element.calculate_relative_line_numbers(
6370 &snapshot,
6371 &(DisplayRow(0)..DisplayRow(6)),
6372 Some(DisplayRow(3)),
6373 )
6374 })
6375 .unwrap();
6376 assert_eq!(relative_rows[&DisplayRow(0)], 3);
6377 assert_eq!(relative_rows[&DisplayRow(1)], 2);
6378 assert_eq!(relative_rows[&DisplayRow(2)], 1);
6379 // current line has no relative number
6380 assert_eq!(relative_rows[&DisplayRow(4)], 1);
6381 assert_eq!(relative_rows[&DisplayRow(5)], 2);
6382
6383 // works if cursor is before screen
6384 let relative_rows = window
6385 .update(cx, |editor, cx| {
6386 let snapshot = editor.snapshot(cx);
6387 element.calculate_relative_line_numbers(
6388 &snapshot,
6389 &(DisplayRow(3)..DisplayRow(6)),
6390 Some(DisplayRow(1)),
6391 )
6392 })
6393 .unwrap();
6394 assert_eq!(relative_rows.len(), 3);
6395 assert_eq!(relative_rows[&DisplayRow(3)], 2);
6396 assert_eq!(relative_rows[&DisplayRow(4)], 3);
6397 assert_eq!(relative_rows[&DisplayRow(5)], 4);
6398
6399 // works if cursor is after screen
6400 let relative_rows = window
6401 .update(cx, |editor, cx| {
6402 let snapshot = editor.snapshot(cx);
6403 element.calculate_relative_line_numbers(
6404 &snapshot,
6405 &(DisplayRow(0)..DisplayRow(3)),
6406 Some(DisplayRow(6)),
6407 )
6408 })
6409 .unwrap();
6410 assert_eq!(relative_rows.len(), 3);
6411 assert_eq!(relative_rows[&DisplayRow(0)], 5);
6412 assert_eq!(relative_rows[&DisplayRow(1)], 4);
6413 assert_eq!(relative_rows[&DisplayRow(2)], 3);
6414 }
6415
6416 #[gpui::test]
6417 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
6418 init_test(cx, |_| {});
6419
6420 let window = cx.add_window(|cx| {
6421 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
6422 Editor::new(EditorMode::Full, buffer, None, true, cx)
6423 });
6424 let cx = &mut VisualTestContext::from_window(*window, cx);
6425 let editor = window.root(cx).unwrap();
6426 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6427
6428 window
6429 .update(cx, |editor, cx| {
6430 editor.cursor_shape = CursorShape::Block;
6431 editor.change_selections(None, cx, |s| {
6432 s.select_ranges([
6433 Point::new(0, 0)..Point::new(1, 0),
6434 Point::new(3, 2)..Point::new(3, 3),
6435 Point::new(5, 6)..Point::new(6, 0),
6436 ]);
6437 });
6438 })
6439 .unwrap();
6440
6441 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6442 EditorElement::new(&editor, style)
6443 });
6444
6445 assert_eq!(state.selections.len(), 1);
6446 let local_selections = &state.selections[0].1;
6447 assert_eq!(local_selections.len(), 3);
6448 // moves cursor back one line
6449 assert_eq!(
6450 local_selections[0].head,
6451 DisplayPoint::new(DisplayRow(0), 6)
6452 );
6453 assert_eq!(
6454 local_selections[0].range,
6455 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
6456 );
6457
6458 // moves cursor back one column
6459 assert_eq!(
6460 local_selections[1].range,
6461 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
6462 );
6463 assert_eq!(
6464 local_selections[1].head,
6465 DisplayPoint::new(DisplayRow(3), 2)
6466 );
6467
6468 // leaves cursor on the max point
6469 assert_eq!(
6470 local_selections[2].range,
6471 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
6472 );
6473 assert_eq!(
6474 local_selections[2].head,
6475 DisplayPoint::new(DisplayRow(6), 0)
6476 );
6477
6478 // active lines does not include 1 (even though the range of the selection does)
6479 assert_eq!(
6480 state.active_rows.keys().cloned().collect::<Vec<_>>(),
6481 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
6482 );
6483
6484 // multi-buffer support
6485 // in DisplayPoint coordinates, this is what we're dealing with:
6486 // 0: [[file
6487 // 1: header
6488 // 2: section]]
6489 // 3: aaaaaa
6490 // 4: bbbbbb
6491 // 5: cccccc
6492 // 6:
6493 // 7: [[footer]]
6494 // 8: [[header]]
6495 // 9: ffffff
6496 // 10: gggggg
6497 // 11: hhhhhh
6498 // 12:
6499 // 13: [[footer]]
6500 // 14: [[file
6501 // 15: header
6502 // 16: section]]
6503 // 17: bbbbbb
6504 // 18: cccccc
6505 // 19: dddddd
6506 // 20: [[footer]]
6507 let window = cx.add_window(|cx| {
6508 let buffer = MultiBuffer::build_multi(
6509 [
6510 (
6511 &(sample_text(8, 6, 'a') + "\n"),
6512 vec![
6513 Point::new(0, 0)..Point::new(3, 0),
6514 Point::new(4, 0)..Point::new(7, 0),
6515 ],
6516 ),
6517 (
6518 &(sample_text(8, 6, 'a') + "\n"),
6519 vec![Point::new(1, 0)..Point::new(3, 0)],
6520 ),
6521 ],
6522 cx,
6523 );
6524 Editor::new(EditorMode::Full, buffer, None, true, cx)
6525 });
6526 let editor = window.root(cx).unwrap();
6527 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6528 let _state = window.update(cx, |editor, cx| {
6529 editor.cursor_shape = CursorShape::Block;
6530 editor.change_selections(None, cx, |s| {
6531 s.select_display_ranges([
6532 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
6533 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
6534 ]);
6535 });
6536 });
6537
6538 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6539 EditorElement::new(&editor, style)
6540 });
6541 assert_eq!(state.selections.len(), 1);
6542 let local_selections = &state.selections[0].1;
6543 assert_eq!(local_selections.len(), 2);
6544
6545 // moves cursor on excerpt boundary back a line
6546 // and doesn't allow selection to bleed through
6547 assert_eq!(
6548 local_selections[0].range,
6549 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
6550 );
6551 assert_eq!(
6552 local_selections[0].head,
6553 DisplayPoint::new(DisplayRow(6), 0)
6554 );
6555 // moves cursor on buffer boundary back two lines
6556 // and doesn't allow selection to bleed through
6557 assert_eq!(
6558 local_selections[1].range,
6559 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
6560 );
6561 assert_eq!(
6562 local_selections[1].head,
6563 DisplayPoint::new(DisplayRow(12), 0)
6564 );
6565 }
6566
6567 #[gpui::test]
6568 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
6569 init_test(cx, |_| {});
6570
6571 let window = cx.add_window(|cx| {
6572 let buffer = MultiBuffer::build_simple("", cx);
6573 Editor::new(EditorMode::Full, buffer, None, true, cx)
6574 });
6575 let cx = &mut VisualTestContext::from_window(*window, cx);
6576 let editor = window.root(cx).unwrap();
6577 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6578 window
6579 .update(cx, |editor, cx| {
6580 editor.set_placeholder_text("hello", cx);
6581 editor.insert_blocks(
6582 [BlockProperties {
6583 style: BlockStyle::Fixed,
6584 disposition: BlockDisposition::Above,
6585 height: 3,
6586 position: Anchor::min(),
6587 render: Box::new(|cx| div().h(3. * cx.line_height()).into_any()),
6588 priority: 0,
6589 }],
6590 None,
6591 cx,
6592 );
6593
6594 // Blur the editor so that it displays placeholder text.
6595 cx.blur();
6596 })
6597 .unwrap();
6598
6599 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6600 EditorElement::new(&editor, style)
6601 });
6602 assert_eq!(state.position_map.line_layouts.len(), 4);
6603 assert_eq!(
6604 state
6605 .line_numbers
6606 .iter()
6607 .map(Option::is_some)
6608 .collect::<Vec<_>>(),
6609 &[false, false, false, true]
6610 );
6611 }
6612
6613 #[gpui::test]
6614 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
6615 const TAB_SIZE: u32 = 4;
6616
6617 let input_text = "\t \t|\t| a b";
6618 let expected_invisibles = vec![
6619 Invisible::Tab {
6620 line_start_offset: 0,
6621 line_end_offset: TAB_SIZE as usize,
6622 },
6623 Invisible::Whitespace {
6624 line_offset: TAB_SIZE as usize,
6625 },
6626 Invisible::Tab {
6627 line_start_offset: TAB_SIZE as usize + 1,
6628 line_end_offset: TAB_SIZE as usize * 2,
6629 },
6630 Invisible::Tab {
6631 line_start_offset: TAB_SIZE as usize * 2 + 1,
6632 line_end_offset: TAB_SIZE as usize * 3,
6633 },
6634 Invisible::Whitespace {
6635 line_offset: TAB_SIZE as usize * 3 + 1,
6636 },
6637 Invisible::Whitespace {
6638 line_offset: TAB_SIZE as usize * 3 + 3,
6639 },
6640 ];
6641 assert_eq!(
6642 expected_invisibles.len(),
6643 input_text
6644 .chars()
6645 .filter(|initial_char| initial_char.is_whitespace())
6646 .count(),
6647 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6648 );
6649
6650 init_test(cx, |s| {
6651 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6652 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
6653 });
6654
6655 let actual_invisibles =
6656 collect_invisibles_from_new_editor(cx, EditorMode::Full, input_text, px(500.0));
6657
6658 assert_eq!(expected_invisibles, actual_invisibles);
6659 }
6660
6661 #[gpui::test]
6662 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
6663 init_test(cx, |s| {
6664 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6665 s.defaults.tab_size = NonZeroU32::new(4);
6666 });
6667
6668 for editor_mode_without_invisibles in [
6669 EditorMode::SingleLine { auto_width: false },
6670 EditorMode::AutoHeight { max_lines: 100 },
6671 ] {
6672 let invisibles = collect_invisibles_from_new_editor(
6673 cx,
6674 editor_mode_without_invisibles,
6675 "\t\t\t| | a b",
6676 px(500.0),
6677 );
6678 assert!(invisibles.is_empty(),
6679 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
6680 }
6681 }
6682
6683 #[gpui::test]
6684 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
6685 let tab_size = 4;
6686 let input_text = "a\tbcd ".repeat(9);
6687 let repeated_invisibles = [
6688 Invisible::Tab {
6689 line_start_offset: 1,
6690 line_end_offset: tab_size as usize,
6691 },
6692 Invisible::Whitespace {
6693 line_offset: tab_size as usize + 3,
6694 },
6695 Invisible::Whitespace {
6696 line_offset: tab_size as usize + 4,
6697 },
6698 Invisible::Whitespace {
6699 line_offset: tab_size as usize + 5,
6700 },
6701 Invisible::Whitespace {
6702 line_offset: tab_size as usize + 6,
6703 },
6704 Invisible::Whitespace {
6705 line_offset: tab_size as usize + 7,
6706 },
6707 ];
6708 let expected_invisibles = std::iter::once(repeated_invisibles)
6709 .cycle()
6710 .take(9)
6711 .flatten()
6712 .collect::<Vec<_>>();
6713 assert_eq!(
6714 expected_invisibles.len(),
6715 input_text
6716 .chars()
6717 .filter(|initial_char| initial_char.is_whitespace())
6718 .count(),
6719 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6720 );
6721 info!("Expected invisibles: {expected_invisibles:?}");
6722
6723 init_test(cx, |_| {});
6724
6725 // Put the same string with repeating whitespace pattern into editors of various size,
6726 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
6727 let resize_step = 10.0;
6728 let mut editor_width = 200.0;
6729 while editor_width <= 1000.0 {
6730 update_test_language_settings(cx, |s| {
6731 s.defaults.tab_size = NonZeroU32::new(tab_size);
6732 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6733 s.defaults.preferred_line_length = Some(editor_width as u32);
6734 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
6735 });
6736
6737 let actual_invisibles = collect_invisibles_from_new_editor(
6738 cx,
6739 EditorMode::Full,
6740 &input_text,
6741 px(editor_width),
6742 );
6743
6744 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
6745 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
6746 let mut i = 0;
6747 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
6748 i = actual_index;
6749 match expected_invisibles.get(i) {
6750 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
6751 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
6752 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
6753 _ => {
6754 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
6755 }
6756 },
6757 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
6758 }
6759 }
6760 let missing_expected_invisibles = &expected_invisibles[i + 1..];
6761 assert!(
6762 missing_expected_invisibles.is_empty(),
6763 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
6764 );
6765
6766 editor_width += resize_step;
6767 }
6768 }
6769
6770 fn collect_invisibles_from_new_editor(
6771 cx: &mut TestAppContext,
6772 editor_mode: EditorMode,
6773 input_text: &str,
6774 editor_width: Pixels,
6775 ) -> Vec<Invisible> {
6776 info!(
6777 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
6778 editor_width.0
6779 );
6780 let window = cx.add_window(|cx| {
6781 let buffer = MultiBuffer::build_simple(input_text, cx);
6782 Editor::new(editor_mode, buffer, None, true, cx)
6783 });
6784 let cx = &mut VisualTestContext::from_window(*window, cx);
6785 let editor = window.root(cx).unwrap();
6786 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6787 window
6788 .update(cx, |editor, cx| {
6789 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
6790 editor.set_wrap_width(Some(editor_width), cx);
6791 })
6792 .unwrap();
6793 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6794 EditorElement::new(&editor, style)
6795 });
6796 state
6797 .position_map
6798 .line_layouts
6799 .iter()
6800 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
6801 .cloned()
6802 .collect()
6803 }
6804}