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