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