1use super::{
2 display_map::{BlockContext, ToDisplayPoint},
3 Anchor, DisplayPoint, Editor, EditorMode, EditorSnapshot, SelectPhase, SoftWrap, ToPoint,
4 MAX_LINE_LEN,
5};
6use crate::{
7 display_map::{BlockStyle, DisplaySnapshot, FoldStatus, InlayOffset, TransformBlock},
8 editor_settings::ShowScrollbar,
9 git::{diff_hunk_to_display, DisplayDiffHunk},
10 hover_popover::{
11 hide_hover, hover_at, hover_at_inlay, InlayHover, HOVER_POPOVER_GAP,
12 MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
13 },
14 link_go_to_definition::{
15 go_to_fetched_definition, go_to_fetched_type_definition, update_go_to_definition_link,
16 GoToDefinitionTrigger, InlayRange,
17 },
18 mouse_context_menu, EditorSettings, EditorStyle, GutterHover, UnfoldAt,
19};
20use clock::ReplicaId;
21use collections::{BTreeMap, HashMap};
22use git::diff::DiffHunkStatus;
23use gpui::{
24 color::Color,
25 elements::*,
26 fonts::{HighlightStyle, TextStyle, Underline},
27 geometry::{
28 rect::RectF,
29 vector::{vec2f, Vector2F},
30 PathBuilder,
31 },
32 json::{self, ToJson},
33 platform::{CursorStyle, Modifiers, MouseButton, MouseButtonEvent, MouseMovedEvent},
34 text_layout::{self, Line, RunStyle, TextLayoutCache},
35 AnyElement, Axis, Border, CursorRegion, Element, EventContext, FontCache, LayoutContext,
36 MouseRegion, PaintContext, Quad, SceneBuilder, SizeConstraint, ViewContext, WindowContext,
37};
38use itertools::Itertools;
39use json::json;
40use language::{
41 language_settings::ShowWhitespaceSetting, Bias, CursorShape, DiagnosticSeverity, OffsetUtf16,
42 Selection,
43};
44use project::{
45 project_settings::{GitGutterSetting, ProjectSettings},
46 HoverBlock, HoverBlockKind, InlayHintLabelPart, InlayHintLabelPartTooltip, InlayHintTooltip,
47 Location, LocationLink, ProjectPath, ResolveState,
48};
49use smallvec::SmallVec;
50use std::{
51 borrow::Cow,
52 cmp::{self, Ordering},
53 fmt::Write,
54 iter,
55 ops::Range,
56 sync::Arc,
57};
58use text::Point;
59use workspace::item::Item;
60
61enum FoldMarkers {}
62
63struct SelectionLayout {
64 head: DisplayPoint,
65 cursor_shape: CursorShape,
66 is_newest: bool,
67 is_local: bool,
68 range: Range<DisplayPoint>,
69 active_rows: Range<u32>,
70}
71
72impl SelectionLayout {
73 fn new<T: ToPoint + ToDisplayPoint + Clone>(
74 selection: Selection<T>,
75 line_mode: bool,
76 cursor_shape: CursorShape,
77 map: &DisplaySnapshot,
78 is_newest: bool,
79 is_local: bool,
80 ) -> Self {
81 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
82 let display_selection = point_selection.map(|p| p.to_display_point(map));
83 let mut range = display_selection.range();
84 let mut head = display_selection.head();
85 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
86 ..map.next_line_boundary(point_selection.end).1.row();
87
88 // vim visual line mode
89 if line_mode {
90 let point_range = map.expand_to_line(point_selection.range());
91 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
92 }
93
94 // any vim visual mode (including line mode)
95 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
96 if head.column() > 0 {
97 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
98 } else if head.row() > 0 && head != map.max_point() {
99 head = map.clip_point(
100 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
101 Bias::Left,
102 );
103 // updating range.end is a no-op unless you're cursor is
104 // on the newline containing a multi-buffer divider
105 // in which case the clip_point may have moved the head up
106 // an additional row.
107 range.end = DisplayPoint::new(head.row() + 1, 0);
108 active_rows.end = head.row();
109 }
110 }
111
112 Self {
113 head,
114 cursor_shape,
115 is_newest,
116 is_local,
117 range,
118 active_rows,
119 }
120 }
121}
122
123pub struct EditorElement {
124 style: Arc<EditorStyle>,
125}
126
127impl EditorElement {
128 pub fn new(style: EditorStyle) -> Self {
129 Self {
130 style: Arc::new(style),
131 }
132 }
133
134 fn attach_mouse_handlers(
135 scene: &mut SceneBuilder,
136 position_map: &Arc<PositionMap>,
137 has_popovers: bool,
138 visible_bounds: RectF,
139 text_bounds: RectF,
140 gutter_bounds: RectF,
141 bounds: RectF,
142 cx: &mut ViewContext<Editor>,
143 ) {
144 enum EditorElementMouseHandlers {}
145 scene.push_mouse_region(
146 MouseRegion::new::<EditorElementMouseHandlers>(
147 cx.view_id(),
148 cx.view_id(),
149 visible_bounds,
150 )
151 .on_down(MouseButton::Left, {
152 let position_map = position_map.clone();
153 move |event, editor, cx| {
154 if !Self::mouse_down(
155 editor,
156 event.platform_event,
157 position_map.as_ref(),
158 text_bounds,
159 gutter_bounds,
160 cx,
161 ) {
162 cx.propagate_event();
163 }
164 }
165 })
166 .on_down(MouseButton::Right, {
167 let position_map = position_map.clone();
168 move |event, editor, cx| {
169 if !Self::mouse_right_down(
170 editor,
171 event.position,
172 position_map.as_ref(),
173 text_bounds,
174 cx,
175 ) {
176 cx.propagate_event();
177 }
178 }
179 })
180 .on_up(MouseButton::Left, {
181 let position_map = position_map.clone();
182 move |event, editor, cx| {
183 if !Self::mouse_up(
184 editor,
185 event.position,
186 event.cmd,
187 event.shift,
188 event.alt,
189 position_map.as_ref(),
190 text_bounds,
191 cx,
192 ) {
193 cx.propagate_event()
194 }
195 }
196 })
197 .on_drag(MouseButton::Left, {
198 let position_map = position_map.clone();
199 move |event, editor, cx| {
200 if event.end {
201 return;
202 }
203
204 if !Self::mouse_dragged(
205 editor,
206 event.platform_event,
207 position_map.as_ref(),
208 text_bounds,
209 cx,
210 ) {
211 cx.propagate_event()
212 }
213 }
214 })
215 .on_move({
216 let position_map = position_map.clone();
217 move |event, editor, cx| {
218 if !Self::mouse_moved(
219 editor,
220 event.platform_event,
221 &position_map,
222 text_bounds,
223 cx,
224 ) {
225 cx.propagate_event()
226 }
227 }
228 })
229 .on_move_out(move |_, editor: &mut Editor, cx| {
230 if has_popovers {
231 hide_hover(editor, cx);
232 }
233 })
234 .on_scroll({
235 let position_map = position_map.clone();
236 move |event, editor, cx| {
237 if !Self::scroll(
238 editor,
239 event.position,
240 *event.delta.raw(),
241 event.delta.precise(),
242 &position_map,
243 bounds,
244 cx,
245 ) {
246 cx.propagate_event()
247 }
248 }
249 }),
250 );
251
252 enum GutterHandlers {}
253 scene.push_mouse_region(
254 MouseRegion::new::<GutterHandlers>(cx.view_id(), cx.view_id() + 1, gutter_bounds)
255 .on_hover(|hover, editor: &mut Editor, cx| {
256 editor.gutter_hover(
257 &GutterHover {
258 hovered: hover.started,
259 },
260 cx,
261 );
262 }),
263 )
264 }
265
266 fn mouse_down(
267 editor: &mut Editor,
268 MouseButtonEvent {
269 position,
270 modifiers:
271 Modifiers {
272 shift,
273 ctrl,
274 alt,
275 cmd,
276 ..
277 },
278 mut click_count,
279 ..
280 }: MouseButtonEvent,
281 position_map: &PositionMap,
282 text_bounds: RectF,
283 gutter_bounds: RectF,
284 cx: &mut EventContext<Editor>,
285 ) -> bool {
286 if gutter_bounds.contains_point(position) {
287 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
288 } else if !text_bounds.contains_point(position) {
289 return false;
290 }
291
292 let point_for_position = position_map.point_for_position(text_bounds, position);
293 let position = point_for_position.previous_valid;
294 if shift && alt {
295 editor.select(
296 SelectPhase::BeginColumnar {
297 position,
298 goal_column: point_for_position.exact_unclipped.column(),
299 },
300 cx,
301 );
302 } else if shift && !ctrl && !alt && !cmd {
303 editor.select(
304 SelectPhase::Extend {
305 position,
306 click_count,
307 },
308 cx,
309 );
310 } else {
311 editor.select(
312 SelectPhase::Begin {
313 position,
314 add: alt,
315 click_count,
316 },
317 cx,
318 );
319 }
320
321 true
322 }
323
324 fn mouse_right_down(
325 editor: &mut Editor,
326 position: Vector2F,
327 position_map: &PositionMap,
328 text_bounds: RectF,
329 cx: &mut EventContext<Editor>,
330 ) -> bool {
331 if !text_bounds.contains_point(position) {
332 return false;
333 }
334 let point_for_position = position_map.point_for_position(text_bounds, position);
335 mouse_context_menu::deploy_context_menu(
336 editor,
337 position,
338 point_for_position.previous_valid,
339 cx,
340 );
341 true
342 }
343
344 fn mouse_up(
345 editor: &mut Editor,
346 position: Vector2F,
347 cmd: bool,
348 shift: bool,
349 alt: bool,
350 position_map: &PositionMap,
351 text_bounds: RectF,
352 cx: &mut EventContext<Editor>,
353 ) -> bool {
354 let end_selection = editor.has_pending_selection();
355 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
356
357 if end_selection {
358 editor.select(SelectPhase::End, cx);
359 }
360
361 if !pending_nonempty_selections && cmd && text_bounds.contains_point(position) {
362 let point = position_map.point_for_position(text_bounds, position);
363 let could_be_inlay = point.as_valid().is_none();
364 if shift || could_be_inlay {
365 go_to_fetched_type_definition(editor, point, alt, cx);
366 } else {
367 go_to_fetched_definition(editor, point, alt, cx);
368 }
369
370 return true;
371 }
372
373 end_selection
374 }
375
376 fn mouse_dragged(
377 editor: &mut Editor,
378 MouseMovedEvent {
379 modifiers: Modifiers { cmd, shift, .. },
380 position,
381 ..
382 }: MouseMovedEvent,
383 position_map: &PositionMap,
384 text_bounds: RectF,
385 cx: &mut EventContext<Editor>,
386 ) -> bool {
387 // This will be handled more correctly once https://github.com/zed-industries/zed/issues/1218 is completed
388 // Don't trigger hover popover if mouse is hovering over context menu
389 let point = if text_bounds.contains_point(position) {
390 position_map
391 .point_for_position(text_bounds, position)
392 .as_valid()
393 } else {
394 None
395 };
396
397 update_go_to_definition_link(
398 editor,
399 point
400 .map(GoToDefinitionTrigger::Text)
401 .unwrap_or(GoToDefinitionTrigger::None),
402 cmd,
403 shift,
404 cx,
405 );
406
407 if editor.has_pending_selection() {
408 let mut scroll_delta = Vector2F::zero();
409
410 let vertical_margin = position_map.line_height.min(text_bounds.height() / 3.0);
411 let top = text_bounds.origin_y() + vertical_margin;
412 let bottom = text_bounds.lower_left().y() - vertical_margin;
413 if position.y() < top {
414 scroll_delta.set_y(-scale_vertical_mouse_autoscroll_delta(top - position.y()))
415 }
416 if position.y() > bottom {
417 scroll_delta.set_y(scale_vertical_mouse_autoscroll_delta(position.y() - bottom))
418 }
419
420 let horizontal_margin = position_map.line_height.min(text_bounds.width() / 3.0);
421 let left = text_bounds.origin_x() + horizontal_margin;
422 let right = text_bounds.upper_right().x() - horizontal_margin;
423 if position.x() < left {
424 scroll_delta.set_x(-scale_horizontal_mouse_autoscroll_delta(
425 left - position.x(),
426 ))
427 }
428 if position.x() > right {
429 scroll_delta.set_x(scale_horizontal_mouse_autoscroll_delta(
430 position.x() - right,
431 ))
432 }
433
434 let point_for_position = position_map.point_for_position(text_bounds, position);
435
436 editor.select(
437 SelectPhase::Update {
438 position: point_for_position.previous_valid,
439 goal_column: point_for_position.exact_unclipped.column(),
440 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
441 .clamp(Vector2F::zero(), position_map.scroll_max),
442 },
443 cx,
444 );
445 hover_at(editor, point, cx);
446 true
447 } else {
448 hover_at(editor, point, cx);
449 false
450 }
451 }
452
453 fn mouse_moved(
454 editor: &mut Editor,
455 MouseMovedEvent {
456 modifiers: Modifiers { shift, cmd, .. },
457 position,
458 ..
459 }: MouseMovedEvent,
460 position_map: &PositionMap,
461 text_bounds: RectF,
462 cx: &mut ViewContext<Editor>,
463 ) -> bool {
464 // This will be handled more correctly once https://github.com/zed-industries/zed/issues/1218 is completed
465 // Don't trigger hover popover if mouse is hovering over context menu
466 if text_bounds.contains_point(position) {
467 let point_for_position = position_map.point_for_position(text_bounds, position);
468 match point_for_position.as_valid() {
469 Some(point) => {
470 update_go_to_definition_link(
471 editor,
472 GoToDefinitionTrigger::Text(point),
473 cmd,
474 shift,
475 cx,
476 );
477 hover_at(editor, Some(point), cx);
478 }
479 None => {
480 update_inlay_link_and_hover_points(
481 position_map,
482 point_for_position,
483 editor,
484 (cmd, shift),
485 cx,
486 );
487 }
488 }
489 } else {
490 update_go_to_definition_link(editor, GoToDefinitionTrigger::None, cmd, shift, cx);
491 hover_at(editor, None, cx);
492 }
493
494 true
495 }
496
497 fn scroll(
498 editor: &mut Editor,
499 position: Vector2F,
500 mut delta: Vector2F,
501 precise: bool,
502 position_map: &PositionMap,
503 bounds: RectF,
504 cx: &mut ViewContext<Editor>,
505 ) -> bool {
506 if !bounds.contains_point(position) {
507 return false;
508 }
509
510 let line_height = position_map.line_height;
511 let max_glyph_width = position_map.em_width;
512
513 let axis = if precise {
514 //Trackpad
515 position_map.snapshot.ongoing_scroll.filter(&mut delta)
516 } else {
517 //Not trackpad
518 delta *= vec2f(max_glyph_width, line_height);
519 None //Resets ongoing scroll
520 };
521
522 let scroll_position = position_map.snapshot.scroll_position();
523 let x = (scroll_position.x() * max_glyph_width - delta.x()) / max_glyph_width;
524 let y = (scroll_position.y() * line_height - delta.y()) / line_height;
525 let scroll_position = vec2f(x, y).clamp(Vector2F::zero(), position_map.scroll_max);
526 editor.scroll(scroll_position, axis, cx);
527
528 true
529 }
530
531 fn paint_background(
532 &self,
533 scene: &mut SceneBuilder,
534 gutter_bounds: RectF,
535 text_bounds: RectF,
536 layout: &LayoutState,
537 ) {
538 let bounds = gutter_bounds.union_rect(text_bounds);
539 let scroll_top =
540 layout.position_map.snapshot.scroll_position().y() * layout.position_map.line_height;
541 scene.push_quad(Quad {
542 bounds: gutter_bounds,
543 background: Some(self.style.gutter_background),
544 border: Border::new(0., Color::transparent_black()),
545 corner_radii: Default::default(),
546 });
547 scene.push_quad(Quad {
548 bounds: text_bounds,
549 background: Some(self.style.background),
550 border: Border::new(0., Color::transparent_black()),
551 corner_radii: Default::default(),
552 });
553
554 if let EditorMode::Full = layout.mode {
555 let mut active_rows = layout.active_rows.iter().peekable();
556 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
557 let mut end_row = *start_row;
558 while active_rows.peek().map_or(false, |r| {
559 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
560 }) {
561 active_rows.next().unwrap();
562 end_row += 1;
563 }
564
565 if !contains_non_empty_selection {
566 let origin = vec2f(
567 bounds.origin_x(),
568 bounds.origin_y() + (layout.position_map.line_height * *start_row as f32)
569 - scroll_top,
570 );
571 let size = vec2f(
572 bounds.width(),
573 layout.position_map.line_height * (end_row - start_row + 1) as f32,
574 );
575 scene.push_quad(Quad {
576 bounds: RectF::new(origin, size),
577 background: Some(self.style.active_line_background),
578 border: Border::default(),
579 corner_radii: Default::default(),
580 });
581 }
582 }
583
584 if let Some(highlighted_rows) = &layout.highlighted_rows {
585 let origin = vec2f(
586 bounds.origin_x(),
587 bounds.origin_y()
588 + (layout.position_map.line_height * highlighted_rows.start as f32)
589 - scroll_top,
590 );
591 let size = vec2f(
592 bounds.width(),
593 layout.position_map.line_height * highlighted_rows.len() as f32,
594 );
595 scene.push_quad(Quad {
596 bounds: RectF::new(origin, size),
597 background: Some(self.style.highlighted_line_background),
598 border: Border::default(),
599 corner_radii: Default::default(),
600 });
601 }
602
603 let scroll_left =
604 layout.position_map.snapshot.scroll_position().x() * layout.position_map.em_width;
605
606 for (wrap_position, active) in layout.wrap_guides.iter() {
607 let x =
608 (text_bounds.origin_x() + wrap_position + layout.position_map.em_width / 2.)
609 - scroll_left;
610
611 if x < text_bounds.origin_x()
612 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
613 {
614 continue;
615 }
616
617 let color = if *active {
618 self.style.active_wrap_guide
619 } else {
620 self.style.wrap_guide
621 };
622 scene.push_quad(Quad {
623 bounds: RectF::new(
624 vec2f(x, text_bounds.origin_y()),
625 vec2f(1., text_bounds.height()),
626 ),
627 background: Some(color),
628 border: Border::new(0., Color::transparent_black()),
629 corner_radii: Default::default(),
630 });
631 }
632 }
633 }
634
635 fn paint_gutter(
636 &mut self,
637 scene: &mut SceneBuilder,
638 bounds: RectF,
639 visible_bounds: RectF,
640 layout: &mut LayoutState,
641 editor: &mut Editor,
642 cx: &mut PaintContext<Editor>,
643 ) {
644 let line_height = layout.position_map.line_height;
645
646 let scroll_position = layout.position_map.snapshot.scroll_position();
647 let scroll_top = scroll_position.y() * line_height;
648
649 let show_gutter = matches!(
650 settings::get::<ProjectSettings>(cx).git.git_gutter,
651 Some(GitGutterSetting::TrackedFiles)
652 );
653
654 if show_gutter {
655 Self::paint_diff_hunks(scene, bounds, layout, cx);
656 }
657
658 for (ix, line) in layout.line_number_layouts.iter().enumerate() {
659 if let Some(line) = line {
660 let line_origin = bounds.origin()
661 + vec2f(
662 bounds.width() - line.width() - layout.gutter_padding,
663 ix as f32 * line_height - (scroll_top % line_height),
664 );
665
666 line.paint(scene, line_origin, visible_bounds, line_height, cx);
667 }
668 }
669
670 for (ix, fold_indicator) in layout.fold_indicators.iter_mut().enumerate() {
671 if let Some(indicator) = fold_indicator.as_mut() {
672 let position = vec2f(
673 bounds.width() - layout.gutter_padding,
674 ix as f32 * line_height - (scroll_top % line_height),
675 );
676 let centering_offset = vec2f(
677 (layout.gutter_padding + layout.gutter_margin - indicator.size().x()) / 2.,
678 (line_height - indicator.size().y()) / 2.,
679 );
680
681 let indicator_origin = bounds.origin() + position + centering_offset;
682
683 indicator.paint(scene, indicator_origin, visible_bounds, editor, cx);
684 }
685 }
686
687 if let Some((row, indicator)) = layout.code_actions_indicator.as_mut() {
688 let mut x = 0.;
689 let mut y = *row as f32 * line_height - scroll_top;
690 x += ((layout.gutter_padding + layout.gutter_margin) - indicator.size().x()) / 2.;
691 y += (line_height - indicator.size().y()) / 2.;
692 indicator.paint(
693 scene,
694 bounds.origin() + vec2f(x, y),
695 visible_bounds,
696 editor,
697 cx,
698 );
699 }
700 }
701
702 fn paint_diff_hunks(
703 scene: &mut SceneBuilder,
704 bounds: RectF,
705 layout: &mut LayoutState,
706 cx: &mut ViewContext<Editor>,
707 ) {
708 let diff_style = &theme::current(cx).editor.diff.clone();
709 let line_height = layout.position_map.line_height;
710
711 let scroll_position = layout.position_map.snapshot.scroll_position();
712 let scroll_top = scroll_position.y() * line_height;
713
714 for hunk in &layout.display_hunks {
715 let (display_row_range, status) = match hunk {
716 //TODO: This rendering is entirely a horrible hack
717 &DisplayDiffHunk::Folded { display_row: row } => {
718 let start_y = row as f32 * line_height - scroll_top;
719 let end_y = start_y + line_height;
720
721 let width = diff_style.removed_width_em * line_height;
722 let highlight_origin = bounds.origin() + vec2f(-width, start_y);
723 let highlight_size = vec2f(width * 2., end_y - start_y);
724 let highlight_bounds = RectF::new(highlight_origin, highlight_size);
725
726 scene.push_quad(Quad {
727 bounds: highlight_bounds,
728 background: Some(diff_style.modified),
729 border: Border::new(0., Color::transparent_black()),
730 corner_radii: (1. * line_height).into(),
731 });
732
733 continue;
734 }
735
736 DisplayDiffHunk::Unfolded {
737 display_row_range,
738 status,
739 } => (display_row_range, status),
740 };
741
742 let color = match status {
743 DiffHunkStatus::Added => diff_style.inserted,
744 DiffHunkStatus::Modified => diff_style.modified,
745
746 //TODO: This rendering is entirely a horrible hack
747 DiffHunkStatus::Removed => {
748 let row = display_row_range.start;
749
750 let offset = line_height / 2.;
751 let start_y = row as f32 * line_height - offset - scroll_top;
752 let end_y = start_y + line_height;
753
754 let width = diff_style.removed_width_em * line_height;
755 let highlight_origin = bounds.origin() + vec2f(-width, start_y);
756 let highlight_size = vec2f(width * 2., end_y - start_y);
757 let highlight_bounds = RectF::new(highlight_origin, highlight_size);
758
759 scene.push_quad(Quad {
760 bounds: highlight_bounds,
761 background: Some(diff_style.deleted),
762 border: Border::new(0., Color::transparent_black()),
763 corner_radii: (1. * line_height).into(),
764 });
765
766 continue;
767 }
768 };
769
770 let start_row = display_row_range.start;
771 let end_row = display_row_range.end;
772
773 let start_y = start_row as f32 * line_height - scroll_top;
774 let end_y = end_row as f32 * line_height - scroll_top;
775
776 let width = diff_style.width_em * line_height;
777 let highlight_origin = bounds.origin() + vec2f(-width, start_y);
778 let highlight_size = vec2f(width * 2., end_y - start_y);
779 let highlight_bounds = RectF::new(highlight_origin, highlight_size);
780
781 scene.push_quad(Quad {
782 bounds: highlight_bounds,
783 background: Some(color),
784 border: Border::new(0., Color::transparent_black()),
785 corner_radii: (diff_style.corner_radius * line_height).into(),
786 });
787 }
788 }
789
790 fn paint_text(
791 &mut self,
792 scene: &mut SceneBuilder,
793 bounds: RectF,
794 visible_bounds: RectF,
795 layout: &mut LayoutState,
796 editor: &mut Editor,
797 cx: &mut PaintContext<Editor>,
798 ) {
799 let style = &self.style;
800 let scroll_position = layout.position_map.snapshot.scroll_position();
801 let start_row = layout.visible_display_row_range.start;
802 let scroll_top = scroll_position.y() * layout.position_map.line_height;
803 let max_glyph_width = layout.position_map.em_width;
804 let scroll_left = scroll_position.x() * max_glyph_width;
805 let content_origin = bounds.origin() + vec2f(layout.gutter_margin, 0.);
806 let line_end_overshoot = 0.15 * layout.position_map.line_height;
807 let whitespace_setting = editor.buffer.read(cx).settings_at(0, cx).show_whitespaces;
808
809 scene.push_layer(Some(bounds));
810
811 scene.push_cursor_region(CursorRegion {
812 bounds,
813 style: if !editor.link_go_to_definition_state.definitions.is_empty() {
814 CursorStyle::PointingHand
815 } else {
816 CursorStyle::IBeam
817 },
818 });
819
820 let fold_corner_radius =
821 self.style.folds.ellipses.corner_radius_factor * layout.position_map.line_height;
822 for (id, range, color) in layout.fold_ranges.iter() {
823 self.paint_highlighted_range(
824 scene,
825 range.clone(),
826 *color,
827 fold_corner_radius,
828 fold_corner_radius * 2.,
829 layout,
830 content_origin,
831 scroll_top,
832 scroll_left,
833 bounds,
834 );
835
836 for bound in range_to_bounds(
837 &range,
838 content_origin,
839 scroll_left,
840 scroll_top,
841 &layout.visible_display_row_range,
842 line_end_overshoot,
843 &layout.position_map,
844 ) {
845 scene.push_cursor_region(CursorRegion {
846 bounds: bound,
847 style: CursorStyle::PointingHand,
848 });
849
850 let display_row = range.start.row();
851
852 let buffer_row = DisplayPoint::new(display_row, 0)
853 .to_point(&layout.position_map.snapshot.display_snapshot)
854 .row;
855
856 scene.push_mouse_region(
857 MouseRegion::new::<FoldMarkers>(cx.view_id(), *id as usize, bound)
858 .on_click(MouseButton::Left, move |_, editor: &mut Editor, cx| {
859 editor.unfold_at(&UnfoldAt { buffer_row }, cx)
860 })
861 .with_notify_on_hover(true)
862 .with_notify_on_click(true),
863 )
864 }
865 }
866
867 for (range, color) in &layout.highlighted_ranges {
868 self.paint_highlighted_range(
869 scene,
870 range.clone(),
871 *color,
872 0.,
873 line_end_overshoot,
874 layout,
875 content_origin,
876 scroll_top,
877 scroll_left,
878 bounds,
879 );
880 }
881
882 let mut cursors = SmallVec::<[Cursor; 32]>::new();
883 let corner_radius = 0.15 * layout.position_map.line_height;
884 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
885
886 for (replica_id, selections) in &layout.selections {
887 let replica_id = *replica_id;
888 let selection_style = if let Some(replica_id) = replica_id {
889 style.replica_selection_style(replica_id)
890 } else {
891 &style.absent_selection
892 };
893
894 for selection in selections {
895 self.paint_highlighted_range(
896 scene,
897 selection.range.clone(),
898 selection_style.selection,
899 corner_radius,
900 corner_radius * 2.,
901 layout,
902 content_origin,
903 scroll_top,
904 scroll_left,
905 bounds,
906 );
907
908 if selection.is_local && !selection.range.is_empty() {
909 invisible_display_ranges.push(selection.range.clone());
910 }
911 if !selection.is_local || editor.show_local_cursors(cx) {
912 let cursor_position = selection.head;
913 if layout
914 .visible_display_row_range
915 .contains(&cursor_position.row())
916 {
917 let cursor_row_layout = &layout.position_map.line_layouts
918 [(cursor_position.row() - start_row) as usize]
919 .line;
920 let cursor_column = cursor_position.column() as usize;
921
922 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
923 let mut block_width =
924 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
925 if block_width == 0.0 {
926 block_width = layout.position_map.em_width;
927 }
928 let block_text = if let CursorShape::Block = selection.cursor_shape {
929 layout
930 .position_map
931 .snapshot
932 .chars_at(cursor_position)
933 .next()
934 .and_then(|(character, _)| {
935 let font_id =
936 cursor_row_layout.font_for_index(cursor_column)?;
937 let text = character.to_string();
938
939 Some(cx.text_layout_cache().layout_str(
940 &text,
941 cursor_row_layout.font_size(),
942 &[(
943 text.chars().count(),
944 RunStyle {
945 font_id,
946 color: style.background,
947 underline: Default::default(),
948 },
949 )],
950 ))
951 })
952 } else {
953 None
954 };
955
956 let x = cursor_character_x - scroll_left;
957 let y = cursor_position.row() as f32 * layout.position_map.line_height
958 - scroll_top;
959 if selection.is_newest {
960 editor.pixel_position_of_newest_cursor = Some(vec2f(
961 bounds.origin_x() + x + block_width / 2.,
962 bounds.origin_y() + y + layout.position_map.line_height / 2.,
963 ));
964 }
965 cursors.push(Cursor {
966 color: selection_style.cursor,
967 block_width,
968 origin: vec2f(x, y),
969 line_height: layout.position_map.line_height,
970 shape: selection.cursor_shape,
971 block_text,
972 });
973 }
974 }
975 }
976 }
977
978 if let Some(visible_text_bounds) = bounds.intersection(visible_bounds) {
979 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
980 let row = start_row + ix as u32;
981 line_with_invisibles.draw(
982 layout,
983 row,
984 scroll_top,
985 scene,
986 content_origin,
987 scroll_left,
988 visible_text_bounds,
989 whitespace_setting,
990 &invisible_display_ranges,
991 visible_bounds,
992 cx,
993 )
994 }
995 }
996
997 scene.paint_layer(Some(bounds), |scene| {
998 for cursor in cursors {
999 cursor.paint(scene, content_origin, cx);
1000 }
1001 });
1002
1003 if let Some((position, context_menu)) = layout.context_menu.as_mut() {
1004 scene.push_stacking_context(None, None);
1005 let cursor_row_layout =
1006 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1007 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_left;
1008 let y = (position.row() + 1) as f32 * layout.position_map.line_height - scroll_top;
1009 let mut list_origin = content_origin + vec2f(x, y);
1010 let list_width = context_menu.size().x();
1011 let list_height = context_menu.size().y();
1012
1013 // Snap the right edge of the list to the right edge of the window if
1014 // its horizontal bounds overflow.
1015 if list_origin.x() + list_width > cx.window_size().x() {
1016 list_origin.set_x((cx.window_size().x() - list_width).max(0.));
1017 }
1018
1019 if list_origin.y() + list_height > bounds.max_y() {
1020 list_origin.set_y(list_origin.y() - layout.position_map.line_height - list_height);
1021 }
1022
1023 context_menu.paint(
1024 scene,
1025 list_origin,
1026 RectF::from_points(Vector2F::zero(), vec2f(f32::MAX, f32::MAX)), // Let content bleed outside of editor
1027 editor,
1028 cx,
1029 );
1030
1031 scene.pop_stacking_context();
1032 }
1033
1034 if let Some((position, hover_popovers)) = layout.hover_popovers.as_mut() {
1035 scene.push_stacking_context(None, None);
1036
1037 // This is safe because we check on layout whether the required row is available
1038 let hovered_row_layout =
1039 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1040
1041 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1042 // height. This is the size we will use to decide whether to render popovers above or below
1043 // the hovered line.
1044 let first_size = hover_popovers[0].size();
1045 let height_to_reserve = first_size.y()
1046 + 1.5 * MIN_POPOVER_LINE_HEIGHT as f32 * layout.position_map.line_height;
1047
1048 // Compute Hovered Point
1049 let x = hovered_row_layout.x_for_index(position.column() as usize) - scroll_left;
1050 let y = position.row() as f32 * layout.position_map.line_height - scroll_top;
1051 let hovered_point = content_origin + vec2f(x, y);
1052
1053 if hovered_point.y() - height_to_reserve > 0.0 {
1054 // There is enough space above. Render popovers above the hovered point
1055 let mut current_y = hovered_point.y();
1056 for hover_popover in hover_popovers {
1057 let size = hover_popover.size();
1058 let mut popover_origin = vec2f(hovered_point.x(), current_y - size.y());
1059
1060 let x_out_of_bounds = bounds.max_x() - (popover_origin.x() + size.x());
1061 if x_out_of_bounds < 0.0 {
1062 popover_origin.set_x(popover_origin.x() + x_out_of_bounds);
1063 }
1064
1065 hover_popover.paint(
1066 scene,
1067 popover_origin,
1068 RectF::from_points(Vector2F::zero(), vec2f(f32::MAX, f32::MAX)), // Let content bleed outside of editor
1069 editor,
1070 cx,
1071 );
1072
1073 current_y = popover_origin.y() - HOVER_POPOVER_GAP;
1074 }
1075 } else {
1076 // There is not enough space above. Render popovers below the hovered point
1077 let mut current_y = hovered_point.y() + layout.position_map.line_height;
1078 for hover_popover in hover_popovers {
1079 let size = hover_popover.size();
1080 let mut popover_origin = vec2f(hovered_point.x(), current_y);
1081
1082 let x_out_of_bounds = bounds.max_x() - (popover_origin.x() + size.x());
1083 if x_out_of_bounds < 0.0 {
1084 popover_origin.set_x(popover_origin.x() + x_out_of_bounds);
1085 }
1086
1087 hover_popover.paint(
1088 scene,
1089 popover_origin,
1090 RectF::from_points(Vector2F::zero(), vec2f(f32::MAX, f32::MAX)), // Let content bleed outside of editor
1091 editor,
1092 cx,
1093 );
1094
1095 current_y = popover_origin.y() + size.y() + HOVER_POPOVER_GAP;
1096 }
1097 }
1098
1099 scene.pop_stacking_context();
1100 }
1101
1102 scene.pop_layer();
1103 }
1104
1105 fn scrollbar_left(&self, bounds: &RectF) -> f32 {
1106 bounds.max_x() - self.style.theme.scrollbar.width
1107 }
1108
1109 fn paint_scrollbar(
1110 &mut self,
1111 scene: &mut SceneBuilder,
1112 bounds: RectF,
1113 layout: &mut LayoutState,
1114 cx: &mut ViewContext<Editor>,
1115 editor: &Editor,
1116 ) {
1117 enum ScrollbarMouseHandlers {}
1118 if layout.mode != EditorMode::Full {
1119 return;
1120 }
1121
1122 let style = &self.style.theme.scrollbar;
1123
1124 let top = bounds.min_y();
1125 let bottom = bounds.max_y();
1126 let right = bounds.max_x();
1127 let left = self.scrollbar_left(&bounds);
1128 let row_range = &layout.scrollbar_row_range;
1129 let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1130
1131 let mut height = bounds.height();
1132 let mut first_row_y_offset = 0.0;
1133
1134 // Impose a minimum height on the scrollbar thumb
1135 let row_height = height / max_row;
1136 let min_thumb_height =
1137 style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
1138 let thumb_height = (row_range.end - row_range.start) * row_height;
1139 if thumb_height < min_thumb_height {
1140 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1141 height -= min_thumb_height - thumb_height;
1142 }
1143
1144 let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
1145
1146 let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1147 let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1148 let track_bounds = RectF::from_points(vec2f(left, top), vec2f(right, bottom));
1149 let thumb_bounds = RectF::from_points(vec2f(left, thumb_top), vec2f(right, thumb_bottom));
1150
1151 if layout.show_scrollbars {
1152 scene.push_quad(Quad {
1153 bounds: track_bounds,
1154 border: style.track.border,
1155 background: style.track.background_color,
1156 ..Default::default()
1157 });
1158 let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
1159 let theme = theme::current(cx);
1160 let scrollbar_theme = &theme.editor.scrollbar;
1161 if layout.is_singleton && scrollbar_settings.selections {
1162 let start_anchor = Anchor::min();
1163 let end_anchor = Anchor::max();
1164 let color = scrollbar_theme.selections;
1165 let border = Border {
1166 width: 1.,
1167 color: style.thumb.border.color,
1168 overlay: false,
1169 top: false,
1170 right: true,
1171 bottom: false,
1172 left: true,
1173 };
1174 let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
1175 let start_y = y_for_row(start.row() as f32);
1176 let mut end_y = y_for_row(end.row() as f32);
1177 if end_y - start_y < 1. {
1178 end_y = start_y + 1.;
1179 }
1180 let bounds = RectF::from_points(vec2f(left, start_y), vec2f(right, end_y));
1181
1182 scene.push_quad(Quad {
1183 bounds,
1184 background: Some(color),
1185 border,
1186 corner_radii: style.thumb.corner_radii.into(),
1187 })
1188 };
1189 let background_ranges = editor
1190 .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1191 start_anchor..end_anchor,
1192 &layout.position_map.snapshot,
1193 50000,
1194 );
1195 for row in background_ranges {
1196 let start = row.start();
1197 let end = row.end();
1198 push_region(*start, *end);
1199 }
1200 }
1201
1202 if layout.is_singleton && scrollbar_settings.git_diff {
1203 let diff_style = scrollbar_theme.git.clone();
1204 for hunk in layout
1205 .position_map
1206 .snapshot
1207 .buffer_snapshot
1208 .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1209 {
1210 let start_display = Point::new(hunk.buffer_range.start, 0)
1211 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1212 let end_display = Point::new(hunk.buffer_range.end, 0)
1213 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1214 let start_y = y_for_row(start_display.row() as f32);
1215 let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1216 y_for_row((end_display.row() + 1) as f32)
1217 } else {
1218 y_for_row((end_display.row()) as f32)
1219 };
1220
1221 if end_y - start_y < 1. {
1222 end_y = start_y + 1.;
1223 }
1224 let bounds = RectF::from_points(vec2f(left, start_y), vec2f(right, end_y));
1225
1226 let color = match hunk.status() {
1227 DiffHunkStatus::Added => diff_style.inserted,
1228 DiffHunkStatus::Modified => diff_style.modified,
1229 DiffHunkStatus::Removed => diff_style.deleted,
1230 };
1231
1232 let border = Border {
1233 width: 1.,
1234 color: style.thumb.border.color,
1235 overlay: false,
1236 top: false,
1237 right: true,
1238 bottom: false,
1239 left: true,
1240 };
1241
1242 scene.push_quad(Quad {
1243 bounds,
1244 background: Some(color),
1245 border,
1246 corner_radii: style.thumb.corner_radii.into(),
1247 })
1248 }
1249 }
1250
1251 scene.push_quad(Quad {
1252 bounds: thumb_bounds,
1253 border: style.thumb.border,
1254 background: style.thumb.background_color,
1255 corner_radii: style.thumb.corner_radii.into(),
1256 });
1257 }
1258
1259 scene.push_cursor_region(CursorRegion {
1260 bounds: track_bounds,
1261 style: CursorStyle::Arrow,
1262 });
1263 scene.push_mouse_region(
1264 MouseRegion::new::<ScrollbarMouseHandlers>(cx.view_id(), cx.view_id(), track_bounds)
1265 .on_move(move |event, editor: &mut Editor, cx| {
1266 if event.pressed_button.is_none() {
1267 editor.scroll_manager.show_scrollbar(cx);
1268 }
1269 })
1270 .on_down(MouseButton::Left, {
1271 let row_range = row_range.clone();
1272 move |event, editor: &mut Editor, cx| {
1273 let y = event.position.y();
1274 if y < thumb_top || thumb_bottom < y {
1275 let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1276 let top_row = center_row
1277 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1278 let mut position = editor.scroll_position(cx);
1279 position.set_y(top_row as f32);
1280 editor.set_scroll_position(position, cx);
1281 } else {
1282 editor.scroll_manager.show_scrollbar(cx);
1283 }
1284 }
1285 })
1286 .on_drag(MouseButton::Left, {
1287 move |event, editor: &mut Editor, cx| {
1288 if event.end {
1289 return;
1290 }
1291
1292 let y = event.prev_mouse_position.y();
1293 let new_y = event.position.y();
1294 if thumb_top < y && y < thumb_bottom {
1295 let mut position = editor.scroll_position(cx);
1296 position.set_y(position.y() + (new_y - y) * (max_row as f32) / height);
1297 if position.y() < 0.0 {
1298 position.set_y(0.);
1299 }
1300 editor.set_scroll_position(position, cx);
1301 }
1302 }
1303 }),
1304 );
1305 }
1306
1307 #[allow(clippy::too_many_arguments)]
1308 fn paint_highlighted_range(
1309 &self,
1310 scene: &mut SceneBuilder,
1311 range: Range<DisplayPoint>,
1312 color: Color,
1313 corner_radius: f32,
1314 line_end_overshoot: f32,
1315 layout: &LayoutState,
1316 content_origin: Vector2F,
1317 scroll_top: f32,
1318 scroll_left: f32,
1319 bounds: RectF,
1320 ) {
1321 let start_row = layout.visible_display_row_range.start;
1322 let end_row = layout.visible_display_row_range.end;
1323 if range.start != range.end {
1324 let row_range = if range.end.column() == 0 {
1325 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1326 } else {
1327 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1328 };
1329
1330 let highlighted_range = HighlightedRange {
1331 color,
1332 line_height: layout.position_map.line_height,
1333 corner_radius,
1334 start_y: content_origin.y()
1335 + row_range.start as f32 * layout.position_map.line_height
1336 - scroll_top,
1337 lines: row_range
1338 .into_iter()
1339 .map(|row| {
1340 let line_layout =
1341 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1342 HighlightedRangeLine {
1343 start_x: if row == range.start.row() {
1344 content_origin.x()
1345 + line_layout.x_for_index(range.start.column() as usize)
1346 - scroll_left
1347 } else {
1348 content_origin.x() - scroll_left
1349 },
1350 end_x: if row == range.end.row() {
1351 content_origin.x()
1352 + line_layout.x_for_index(range.end.column() as usize)
1353 - scroll_left
1354 } else {
1355 content_origin.x() + line_layout.width() + line_end_overshoot
1356 - scroll_left
1357 },
1358 }
1359 })
1360 .collect(),
1361 };
1362
1363 highlighted_range.paint(bounds, scene);
1364 }
1365 }
1366
1367 fn paint_blocks(
1368 &mut self,
1369 scene: &mut SceneBuilder,
1370 bounds: RectF,
1371 visible_bounds: RectF,
1372 layout: &mut LayoutState,
1373 editor: &mut Editor,
1374 cx: &mut PaintContext<Editor>,
1375 ) {
1376 let scroll_position = layout.position_map.snapshot.scroll_position();
1377 let scroll_left = scroll_position.x() * layout.position_map.em_width;
1378 let scroll_top = scroll_position.y() * layout.position_map.line_height;
1379
1380 for block in &mut layout.blocks {
1381 let mut origin = bounds.origin()
1382 + vec2f(
1383 0.,
1384 block.row as f32 * layout.position_map.line_height - scroll_top,
1385 );
1386 if !matches!(block.style, BlockStyle::Sticky) {
1387 origin += vec2f(-scroll_left, 0.);
1388 }
1389 block
1390 .element
1391 .paint(scene, origin, visible_bounds, editor, cx);
1392 }
1393 }
1394
1395 fn column_pixels(&self, column: usize, cx: &ViewContext<Editor>) -> f32 {
1396 let style = &self.style;
1397
1398 cx.text_layout_cache()
1399 .layout_str(
1400 " ".repeat(column).as_str(),
1401 style.text.font_size,
1402 &[(
1403 column,
1404 RunStyle {
1405 font_id: style.text.font_id,
1406 color: Color::black(),
1407 underline: Default::default(),
1408 },
1409 )],
1410 )
1411 .width()
1412 }
1413
1414 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &ViewContext<Editor>) -> f32 {
1415 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1416 self.column_pixels(digit_count, cx)
1417 }
1418
1419 //Folds contained in a hunk are ignored apart from shrinking visual size
1420 //If a fold contains any hunks then that fold line is marked as modified
1421 fn layout_git_gutters(
1422 &self,
1423 display_rows: Range<u32>,
1424 snapshot: &EditorSnapshot,
1425 ) -> Vec<DisplayDiffHunk> {
1426 let buffer_snapshot = &snapshot.buffer_snapshot;
1427
1428 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1429 .to_point(snapshot)
1430 .row;
1431 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1432 .to_point(snapshot)
1433 .row;
1434
1435 buffer_snapshot
1436 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1437 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1438 .dedup()
1439 .collect()
1440 }
1441
1442 fn layout_line_numbers(
1443 &self,
1444 rows: Range<u32>,
1445 active_rows: &BTreeMap<u32, bool>,
1446 is_singleton: bool,
1447 snapshot: &EditorSnapshot,
1448 cx: &ViewContext<Editor>,
1449 ) -> (
1450 Vec<Option<text_layout::Line>>,
1451 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1452 ) {
1453 let style = &self.style;
1454 let include_line_numbers = snapshot.mode == EditorMode::Full;
1455 let mut line_number_layouts = Vec::with_capacity(rows.len());
1456 let mut fold_statuses = Vec::with_capacity(rows.len());
1457 let mut line_number = String::new();
1458 for (ix, row) in snapshot
1459 .buffer_rows(rows.start)
1460 .take((rows.end - rows.start) as usize)
1461 .enumerate()
1462 {
1463 let display_row = rows.start + ix as u32;
1464 let (active, color) = if active_rows.contains_key(&display_row) {
1465 (true, style.line_number_active)
1466 } else {
1467 (false, style.line_number)
1468 };
1469 if let Some(buffer_row) = row {
1470 if include_line_numbers {
1471 line_number.clear();
1472 write!(&mut line_number, "{}", buffer_row + 1).unwrap();
1473 line_number_layouts.push(Some(cx.text_layout_cache().layout_str(
1474 &line_number,
1475 style.text.font_size,
1476 &[(
1477 line_number.len(),
1478 RunStyle {
1479 font_id: style.text.font_id,
1480 color,
1481 underline: Default::default(),
1482 },
1483 )],
1484 )));
1485 fold_statuses.push(
1486 is_singleton
1487 .then(|| {
1488 snapshot
1489 .fold_for_line(buffer_row)
1490 .map(|fold_status| (fold_status, buffer_row, active))
1491 })
1492 .flatten(),
1493 )
1494 }
1495 } else {
1496 fold_statuses.push(None);
1497 line_number_layouts.push(None);
1498 }
1499 }
1500
1501 (line_number_layouts, fold_statuses)
1502 }
1503
1504 fn layout_lines(
1505 &mut self,
1506 rows: Range<u32>,
1507 line_number_layouts: &[Option<Line>],
1508 snapshot: &EditorSnapshot,
1509 cx: &ViewContext<Editor>,
1510 ) -> Vec<LineWithInvisibles> {
1511 if rows.start >= rows.end {
1512 return Vec::new();
1513 }
1514
1515 // When the editor is empty and unfocused, then show the placeholder.
1516 if snapshot.is_empty() {
1517 let placeholder_style = self
1518 .style
1519 .placeholder_text
1520 .as_ref()
1521 .unwrap_or(&self.style.text);
1522 let placeholder_text = snapshot.placeholder_text();
1523 let placeholder_lines = placeholder_text
1524 .as_ref()
1525 .map_or("", AsRef::as_ref)
1526 .split('\n')
1527 .skip(rows.start as usize)
1528 .chain(iter::repeat(""))
1529 .take(rows.len());
1530 placeholder_lines
1531 .map(|line| {
1532 cx.text_layout_cache().layout_str(
1533 line,
1534 placeholder_style.font_size,
1535 &[(
1536 line.len(),
1537 RunStyle {
1538 font_id: placeholder_style.font_id,
1539 color: placeholder_style.color,
1540 underline: Default::default(),
1541 },
1542 )],
1543 )
1544 })
1545 .map(|line| LineWithInvisibles {
1546 line,
1547 invisibles: Vec::new(),
1548 })
1549 .collect()
1550 } else {
1551 let style = &self.style;
1552 let chunks = snapshot
1553 .chunks(
1554 rows.clone(),
1555 true,
1556 Some(style.theme.hint),
1557 Some(style.theme.suggestion),
1558 )
1559 .map(|chunk| {
1560 let mut highlight_style = chunk
1561 .syntax_highlight_id
1562 .and_then(|id| id.style(&style.syntax));
1563
1564 if let Some(chunk_highlight) = chunk.highlight_style {
1565 if let Some(highlight_style) = highlight_style.as_mut() {
1566 highlight_style.highlight(chunk_highlight);
1567 } else {
1568 highlight_style = Some(chunk_highlight);
1569 }
1570 }
1571
1572 let mut diagnostic_highlight = HighlightStyle::default();
1573
1574 if chunk.is_unnecessary {
1575 diagnostic_highlight.fade_out = Some(style.unnecessary_code_fade);
1576 }
1577
1578 if let Some(severity) = chunk.diagnostic_severity {
1579 // Omit underlines for HINT/INFO diagnostics on 'unnecessary' code.
1580 if severity <= DiagnosticSeverity::WARNING || !chunk.is_unnecessary {
1581 let diagnostic_style = super::diagnostic_style(severity, true, style);
1582 diagnostic_highlight.underline = Some(Underline {
1583 color: Some(diagnostic_style.message.text.color),
1584 thickness: 1.0.into(),
1585 squiggly: true,
1586 });
1587 }
1588 }
1589
1590 if let Some(highlight_style) = highlight_style.as_mut() {
1591 highlight_style.highlight(diagnostic_highlight);
1592 } else {
1593 highlight_style = Some(diagnostic_highlight);
1594 }
1595
1596 HighlightedChunk {
1597 chunk: chunk.text,
1598 style: highlight_style,
1599 is_tab: chunk.is_tab,
1600 }
1601 });
1602
1603 LineWithInvisibles::from_chunks(
1604 chunks,
1605 &style.text,
1606 cx.text_layout_cache(),
1607 cx.font_cache(),
1608 MAX_LINE_LEN,
1609 rows.len() as usize,
1610 line_number_layouts,
1611 snapshot.mode,
1612 )
1613 }
1614 }
1615
1616 #[allow(clippy::too_many_arguments)]
1617 fn layout_blocks(
1618 &mut self,
1619 rows: Range<u32>,
1620 snapshot: &EditorSnapshot,
1621 editor_width: f32,
1622 scroll_width: f32,
1623 gutter_padding: f32,
1624 gutter_width: f32,
1625 em_width: f32,
1626 text_x: f32,
1627 line_height: f32,
1628 style: &EditorStyle,
1629 line_layouts: &[LineWithInvisibles],
1630 editor: &mut Editor,
1631 cx: &mut LayoutContext<Editor>,
1632 ) -> (f32, Vec<BlockLayout>) {
1633 let mut block_id = 0;
1634 let scroll_x = snapshot.scroll_anchor.offset.x();
1635 let (fixed_blocks, non_fixed_blocks) = snapshot
1636 .blocks_in_range(rows.clone())
1637 .partition::<Vec<_>, _>(|(_, block)| match block {
1638 TransformBlock::ExcerptHeader { .. } => false,
1639 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1640 });
1641 let mut render_block = |block: &TransformBlock, width: f32, block_id: usize| {
1642 let mut element = match block {
1643 TransformBlock::Custom(block) => {
1644 let align_to = block
1645 .position()
1646 .to_point(&snapshot.buffer_snapshot)
1647 .to_display_point(snapshot);
1648 let anchor_x = text_x
1649 + if rows.contains(&align_to.row()) {
1650 line_layouts[(align_to.row() - rows.start) as usize]
1651 .line
1652 .x_for_index(align_to.column() as usize)
1653 } else {
1654 layout_line(align_to.row(), snapshot, style, cx.text_layout_cache())
1655 .x_for_index(align_to.column() as usize)
1656 };
1657
1658 block.render(&mut BlockContext {
1659 view_context: cx,
1660 anchor_x,
1661 gutter_padding,
1662 line_height,
1663 scroll_x,
1664 gutter_width,
1665 em_width,
1666 block_id,
1667 })
1668 }
1669 TransformBlock::ExcerptHeader {
1670 id,
1671 buffer,
1672 range,
1673 starts_new_buffer,
1674 ..
1675 } => {
1676 let tooltip_style = theme::current(cx).tooltip.clone();
1677 let include_root = editor
1678 .project
1679 .as_ref()
1680 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1681 .unwrap_or_default();
1682 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
1683 let jump_path = ProjectPath {
1684 worktree_id: file.worktree_id(cx),
1685 path: file.path.clone(),
1686 };
1687 let jump_anchor = range
1688 .primary
1689 .as_ref()
1690 .map_or(range.context.start, |primary| primary.start);
1691 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
1692
1693 enum JumpIcon {}
1694 MouseEventHandler::new::<JumpIcon, _>((*id).into(), cx, |state, _| {
1695 let style = style.jump_icon.style_for(state);
1696 Svg::new("icons/arrow_up_right_8.svg")
1697 .with_color(style.color)
1698 .constrained()
1699 .with_width(style.icon_width)
1700 .aligned()
1701 .contained()
1702 .with_style(style.container)
1703 .constrained()
1704 .with_width(style.button_width)
1705 .with_height(style.button_width)
1706 })
1707 .with_cursor_style(CursorStyle::PointingHand)
1708 .on_click(MouseButton::Left, move |_, editor, cx| {
1709 if let Some(workspace) = editor
1710 .workspace
1711 .as_ref()
1712 .and_then(|(workspace, _)| workspace.upgrade(cx))
1713 {
1714 workspace.update(cx, |workspace, cx| {
1715 Editor::jump(
1716 workspace,
1717 jump_path.clone(),
1718 jump_position,
1719 jump_anchor,
1720 cx,
1721 );
1722 });
1723 }
1724 })
1725 .with_tooltip::<JumpIcon>(
1726 (*id).into(),
1727 "Jump to Buffer".to_string(),
1728 Some(Box::new(crate::OpenExcerpts)),
1729 tooltip_style.clone(),
1730 cx,
1731 )
1732 .aligned()
1733 .flex_float()
1734 });
1735
1736 if *starts_new_buffer {
1737 let editor_font_size = style.text.font_size;
1738 let style = &style.diagnostic_path_header;
1739 let font_size = (style.text_scale_factor * editor_font_size).round();
1740
1741 let path = buffer.resolve_file_path(cx, include_root);
1742 let mut filename = None;
1743 let mut parent_path = None;
1744 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
1745 if let Some(path) = path {
1746 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
1747 parent_path =
1748 path.parent().map(|p| p.to_string_lossy().to_string() + "/");
1749 }
1750
1751 Flex::row()
1752 .with_child(
1753 Label::new(
1754 filename.unwrap_or_else(|| "untitled".to_string()),
1755 style.filename.text.clone().with_font_size(font_size),
1756 )
1757 .contained()
1758 .with_style(style.filename.container)
1759 .aligned(),
1760 )
1761 .with_children(parent_path.map(|path| {
1762 Label::new(path, style.path.text.clone().with_font_size(font_size))
1763 .contained()
1764 .with_style(style.path.container)
1765 .aligned()
1766 }))
1767 .with_children(jump_icon)
1768 .contained()
1769 .with_style(style.container)
1770 .with_padding_left(gutter_padding)
1771 .with_padding_right(gutter_padding)
1772 .expanded()
1773 .into_any_named("path header block")
1774 } else {
1775 let text_style = style.text.clone();
1776 Flex::row()
1777 .with_child(Label::new("⋯", text_style))
1778 .with_children(jump_icon)
1779 .contained()
1780 .with_padding_left(gutter_padding)
1781 .with_padding_right(gutter_padding)
1782 .expanded()
1783 .into_any_named("collapsed context")
1784 }
1785 }
1786 };
1787
1788 element.layout(
1789 SizeConstraint {
1790 min: Vector2F::zero(),
1791 max: vec2f(width, block.height() as f32 * line_height),
1792 },
1793 editor,
1794 cx,
1795 );
1796 element
1797 };
1798
1799 let mut fixed_block_max_width = 0f32;
1800 let mut blocks = Vec::new();
1801 for (row, block) in fixed_blocks {
1802 let element = render_block(block, f32::INFINITY, block_id);
1803 block_id += 1;
1804 fixed_block_max_width = fixed_block_max_width.max(element.size().x() + em_width);
1805 blocks.push(BlockLayout {
1806 row,
1807 element,
1808 style: BlockStyle::Fixed,
1809 });
1810 }
1811 for (row, block) in non_fixed_blocks {
1812 let style = match block {
1813 TransformBlock::Custom(block) => block.style(),
1814 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
1815 };
1816 let width = match style {
1817 BlockStyle::Sticky => editor_width,
1818 BlockStyle::Flex => editor_width
1819 .max(fixed_block_max_width)
1820 .max(gutter_width + scroll_width),
1821 BlockStyle::Fixed => unreachable!(),
1822 };
1823 let element = render_block(block, width, block_id);
1824 block_id += 1;
1825 blocks.push(BlockLayout {
1826 row,
1827 element,
1828 style,
1829 });
1830 }
1831 (
1832 scroll_width.max(fixed_block_max_width - gutter_width),
1833 blocks,
1834 )
1835 }
1836}
1837
1838fn update_inlay_link_and_hover_points(
1839 position_map: &PositionMap,
1840 point_for_position: PointForPosition,
1841 editor: &mut Editor,
1842 (cmd_held, shift_held): (bool, bool),
1843 cx: &mut ViewContext<'_, '_, Editor>,
1844) {
1845 let hint_start_offset = position_map
1846 .snapshot
1847 .display_point_to_inlay_offset(point_for_position.previous_valid, Bias::Left);
1848 let hint_end_offset = position_map
1849 .snapshot
1850 .display_point_to_inlay_offset(point_for_position.next_valid, Bias::Right);
1851 let offset_overshoot = point_for_position.column_overshoot_after_line_end as usize;
1852 let hovered_offset = if offset_overshoot == 0 {
1853 Some(
1854 position_map
1855 .snapshot
1856 .display_point_to_inlay_offset(point_for_position.exact_unclipped, Bias::Left),
1857 )
1858 } else if (hint_end_offset - hint_start_offset).0 >= offset_overshoot {
1859 Some(InlayOffset(hint_start_offset.0 + offset_overshoot))
1860 } else {
1861 None
1862 };
1863 if let Some(hovered_offset) = hovered_offset {
1864 let snapshot = editor.buffer().read(cx).snapshot(cx);
1865 let previous_valid_anchor = snapshot.anchor_at(
1866 point_for_position
1867 .previous_valid
1868 .to_point(&position_map.snapshot.display_snapshot),
1869 Bias::Left,
1870 );
1871 let next_valid_anchor = snapshot.anchor_at(
1872 point_for_position
1873 .next_valid
1874 .to_point(&position_map.snapshot.display_snapshot),
1875 Bias::Right,
1876 );
1877
1878 let mut go_to_definition_updated = false;
1879 let mut hover_updated = false;
1880 if let Some(hovered_hint) = editor
1881 .visible_inlay_hints(cx)
1882 .into_iter()
1883 .skip_while(|hint| hint.position.cmp(&previous_valid_anchor, &snapshot).is_lt())
1884 .take_while(|hint| hint.position.cmp(&next_valid_anchor, &snapshot).is_le())
1885 .max_by_key(|hint| hint.id)
1886 {
1887 let inlay_hint_cache = editor.inlay_hint_cache();
1888 let excerpt_id = previous_valid_anchor.excerpt_id;
1889 if let Some(cached_hint) = inlay_hint_cache.hint_by_id(excerpt_id, hovered_hint.id) {
1890 match cached_hint.resolve_state {
1891 ResolveState::CanResolve(_, _) => {
1892 if let Some(buffer_id) = previous_valid_anchor.buffer_id {
1893 inlay_hint_cache.spawn_hint_resolve(
1894 buffer_id,
1895 excerpt_id,
1896 hovered_hint.id,
1897 cx,
1898 );
1899 }
1900 }
1901 ResolveState::Resolved => {
1902 match cached_hint.label {
1903 project::InlayHintLabel::String(_) => {
1904 if let Some(tooltip) = cached_hint.tooltip {
1905 hover_at_inlay(
1906 editor,
1907 InlayHover {
1908 excerpt: excerpt_id,
1909 tooltip: match tooltip {
1910 InlayHintTooltip::String(text) => HoverBlock {
1911 text,
1912 kind: HoverBlockKind::PlainText,
1913 },
1914 InlayHintTooltip::MarkupContent(content) => {
1915 HoverBlock {
1916 text: content.value,
1917 kind: content.kind,
1918 }
1919 }
1920 },
1921 triggered_from: hovered_offset,
1922 range: InlayRange {
1923 inlay_position: hovered_hint.position,
1924 highlight_start: hint_start_offset,
1925 highlight_end: hint_end_offset,
1926 },
1927 },
1928 cx,
1929 );
1930 hover_updated = true;
1931 }
1932 }
1933 project::InlayHintLabel::LabelParts(label_parts) => {
1934 if let Some((hovered_hint_part, part_range)) =
1935 find_hovered_hint_part(
1936 label_parts,
1937 hint_start_offset..hint_end_offset,
1938 hovered_offset,
1939 )
1940 {
1941 if let Some(tooltip) = hovered_hint_part.tooltip {
1942 hover_at_inlay(
1943 editor,
1944 InlayHover {
1945 excerpt: excerpt_id,
1946 tooltip: match tooltip {
1947 InlayHintLabelPartTooltip::String(text) => {
1948 HoverBlock {
1949 text,
1950 kind: HoverBlockKind::PlainText,
1951 }
1952 }
1953 InlayHintLabelPartTooltip::MarkupContent(
1954 content,
1955 ) => HoverBlock {
1956 text: content.value,
1957 kind: content.kind,
1958 },
1959 },
1960 triggered_from: hovered_offset,
1961 range: InlayRange {
1962 inlay_position: hovered_hint.position,
1963 highlight_start: part_range.start,
1964 highlight_end: part_range.end,
1965 },
1966 },
1967 cx,
1968 );
1969 hover_updated = true;
1970 }
1971 if let Some(location) = hovered_hint_part.location {
1972 if let Some(buffer) =
1973 cached_hint.position.buffer_id.and_then(|buffer_id| {
1974 editor.buffer().read(cx).buffer(buffer_id)
1975 })
1976 {
1977 go_to_definition_updated = true;
1978 update_go_to_definition_link(
1979 editor,
1980 GoToDefinitionTrigger::InlayHint(
1981 InlayRange {
1982 inlay_position: hovered_hint.position,
1983 highlight_start: part_range.start,
1984 highlight_end: part_range.end,
1985 },
1986 LocationLink {
1987 origin: Some(Location {
1988 buffer,
1989 range: cached_hint.position
1990 ..cached_hint.position,
1991 }),
1992 target: location,
1993 },
1994 ),
1995 cmd_held,
1996 shift_held,
1997 cx,
1998 );
1999 }
2000 }
2001 }
2002 }
2003 };
2004 }
2005 ResolveState::Resolving => {}
2006 }
2007 }
2008 }
2009
2010 if !go_to_definition_updated {
2011 update_go_to_definition_link(
2012 editor,
2013 GoToDefinitionTrigger::None,
2014 cmd_held,
2015 shift_held,
2016 cx,
2017 );
2018 }
2019 if !hover_updated {
2020 hover_at(editor, None, cx);
2021 }
2022 }
2023}
2024
2025fn find_hovered_hint_part(
2026 label_parts: Vec<InlayHintLabelPart>,
2027 hint_range: Range<InlayOffset>,
2028 hovered_offset: InlayOffset,
2029) -> Option<(InlayHintLabelPart, Range<InlayOffset>)> {
2030 if hovered_offset >= hint_range.start && hovered_offset <= hint_range.end {
2031 let mut hovered_character = (hovered_offset - hint_range.start).0;
2032 let mut part_start = hint_range.start;
2033 for part in label_parts {
2034 let part_len = part.value.chars().count();
2035 if hovered_character >= part_len {
2036 hovered_character -= part_len;
2037 part_start.0 += part_len;
2038 } else {
2039 return Some((part, part_start..InlayOffset(part_start.0 + part_len)));
2040 }
2041 }
2042 }
2043 None
2044}
2045
2046struct HighlightedChunk<'a> {
2047 chunk: &'a str,
2048 style: Option<HighlightStyle>,
2049 is_tab: bool,
2050}
2051
2052#[derive(Debug)]
2053pub struct LineWithInvisibles {
2054 pub line: Line,
2055 invisibles: Vec<Invisible>,
2056}
2057
2058impl LineWithInvisibles {
2059 fn from_chunks<'a>(
2060 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2061 text_style: &TextStyle,
2062 text_layout_cache: &TextLayoutCache,
2063 font_cache: &Arc<FontCache>,
2064 max_line_len: usize,
2065 max_line_count: usize,
2066 line_number_layouts: &[Option<Line>],
2067 editor_mode: EditorMode,
2068 ) -> Vec<Self> {
2069 let mut layouts = Vec::with_capacity(max_line_count);
2070 let mut line = String::new();
2071 let mut invisibles = Vec::new();
2072 let mut styles = Vec::new();
2073 let mut non_whitespace_added = false;
2074 let mut row = 0;
2075 let mut line_exceeded_max_len = false;
2076 for highlighted_chunk in chunks.chain([HighlightedChunk {
2077 chunk: "\n",
2078 style: None,
2079 is_tab: false,
2080 }]) {
2081 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2082 if ix > 0 {
2083 layouts.push(Self {
2084 line: text_layout_cache.layout_str(&line, text_style.font_size, &styles),
2085 invisibles: invisibles.drain(..).collect(),
2086 });
2087
2088 line.clear();
2089 styles.clear();
2090 row += 1;
2091 line_exceeded_max_len = false;
2092 non_whitespace_added = false;
2093 if row == max_line_count {
2094 return layouts;
2095 }
2096 }
2097
2098 if !line_chunk.is_empty() && !line_exceeded_max_len {
2099 let text_style = if let Some(style) = highlighted_chunk.style {
2100 text_style
2101 .clone()
2102 .highlight(style, font_cache)
2103 .map(Cow::Owned)
2104 .unwrap_or_else(|_| Cow::Borrowed(text_style))
2105 } else {
2106 Cow::Borrowed(text_style)
2107 };
2108
2109 if line.len() + line_chunk.len() > max_line_len {
2110 let mut chunk_len = max_line_len - line.len();
2111 while !line_chunk.is_char_boundary(chunk_len) {
2112 chunk_len -= 1;
2113 }
2114 line_chunk = &line_chunk[..chunk_len];
2115 line_exceeded_max_len = true;
2116 }
2117
2118 styles.push((
2119 line_chunk.len(),
2120 RunStyle {
2121 font_id: text_style.font_id,
2122 color: text_style.color,
2123 underline: text_style.underline,
2124 },
2125 ));
2126
2127 if editor_mode == EditorMode::Full {
2128 // Line wrap pads its contents with fake whitespaces,
2129 // avoid printing them
2130 let inside_wrapped_string = line_number_layouts
2131 .get(row)
2132 .and_then(|layout| layout.as_ref())
2133 .is_none();
2134 if highlighted_chunk.is_tab {
2135 if non_whitespace_added || !inside_wrapped_string {
2136 invisibles.push(Invisible::Tab {
2137 line_start_offset: line.len(),
2138 });
2139 }
2140 } else {
2141 invisibles.extend(
2142 line_chunk
2143 .chars()
2144 .enumerate()
2145 .filter(|(_, line_char)| {
2146 let is_whitespace = line_char.is_whitespace();
2147 non_whitespace_added |= !is_whitespace;
2148 is_whitespace
2149 && (non_whitespace_added || !inside_wrapped_string)
2150 })
2151 .map(|(whitespace_index, _)| Invisible::Whitespace {
2152 line_offset: line.len() + whitespace_index,
2153 }),
2154 )
2155 }
2156 }
2157
2158 line.push_str(line_chunk);
2159 }
2160 }
2161 }
2162
2163 layouts
2164 }
2165
2166 fn draw(
2167 &self,
2168 layout: &LayoutState,
2169 row: u32,
2170 scroll_top: f32,
2171 scene: &mut SceneBuilder,
2172 content_origin: Vector2F,
2173 scroll_left: f32,
2174 visible_text_bounds: RectF,
2175 whitespace_setting: ShowWhitespaceSetting,
2176 selection_ranges: &[Range<DisplayPoint>],
2177 visible_bounds: RectF,
2178 cx: &mut ViewContext<Editor>,
2179 ) {
2180 let line_height = layout.position_map.line_height;
2181 let line_y = row as f32 * line_height - scroll_top;
2182
2183 self.line.paint(
2184 scene,
2185 content_origin + vec2f(-scroll_left, line_y),
2186 visible_text_bounds,
2187 line_height,
2188 cx,
2189 );
2190
2191 self.draw_invisibles(
2192 &selection_ranges,
2193 layout,
2194 content_origin,
2195 scroll_left,
2196 line_y,
2197 row,
2198 scene,
2199 visible_bounds,
2200 line_height,
2201 whitespace_setting,
2202 cx,
2203 );
2204 }
2205
2206 fn draw_invisibles(
2207 &self,
2208 selection_ranges: &[Range<DisplayPoint>],
2209 layout: &LayoutState,
2210 content_origin: Vector2F,
2211 scroll_left: f32,
2212 line_y: f32,
2213 row: u32,
2214 scene: &mut SceneBuilder,
2215 visible_bounds: RectF,
2216 line_height: f32,
2217 whitespace_setting: ShowWhitespaceSetting,
2218 cx: &mut ViewContext<Editor>,
2219 ) {
2220 let allowed_invisibles_regions = match whitespace_setting {
2221 ShowWhitespaceSetting::None => return,
2222 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2223 ShowWhitespaceSetting::All => None,
2224 };
2225
2226 for invisible in &self.invisibles {
2227 let (&token_offset, invisible_symbol) = match invisible {
2228 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2229 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2230 };
2231
2232 let x_offset = self.line.x_for_index(token_offset);
2233 let invisible_offset =
2234 (layout.position_map.em_width - invisible_symbol.width()).max(0.0) / 2.0;
2235 let origin = content_origin + vec2f(-scroll_left + x_offset + invisible_offset, line_y);
2236
2237 if let Some(allowed_regions) = allowed_invisibles_regions {
2238 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2239 if !allowed_regions
2240 .iter()
2241 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2242 {
2243 continue;
2244 }
2245 }
2246 invisible_symbol.paint(scene, origin, visible_bounds, line_height, cx);
2247 }
2248 }
2249}
2250
2251#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2252enum Invisible {
2253 Tab { line_start_offset: usize },
2254 Whitespace { line_offset: usize },
2255}
2256
2257impl Element<Editor> for EditorElement {
2258 type LayoutState = LayoutState;
2259 type PaintState = ();
2260
2261 fn layout(
2262 &mut self,
2263 constraint: SizeConstraint,
2264 editor: &mut Editor,
2265 cx: &mut LayoutContext<Editor>,
2266 ) -> (Vector2F, Self::LayoutState) {
2267 let mut size = constraint.max;
2268 if size.x().is_infinite() {
2269 unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2270 }
2271
2272 let snapshot = editor.snapshot(cx);
2273 let style = self.style.clone();
2274
2275 let line_height = (style.text.font_size * style.line_height_scalar).round();
2276
2277 let gutter_padding;
2278 let gutter_width;
2279 let gutter_margin;
2280 if snapshot.show_gutter {
2281 let em_width = style.text.em_width(cx.font_cache());
2282 gutter_padding = (em_width * style.gutter_padding_factor).round();
2283 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2284 gutter_margin = -style.text.descent(cx.font_cache());
2285 } else {
2286 gutter_padding = 0.0;
2287 gutter_width = 0.0;
2288 gutter_margin = 0.0;
2289 };
2290
2291 let text_width = size.x() - gutter_width;
2292 let em_width = style.text.em_width(cx.font_cache());
2293 let em_advance = style.text.em_advance(cx.font_cache());
2294 let overscroll = vec2f(em_width, 0.);
2295 let snapshot = {
2296 editor.set_visible_line_count(size.y() / line_height, cx);
2297
2298 let editor_width = text_width - gutter_margin - overscroll.x() - em_width;
2299 let wrap_width = match editor.soft_wrap_mode(cx) {
2300 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2301 SoftWrap::EditorWidth => editor_width,
2302 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2303 };
2304
2305 if editor.set_wrap_width(Some(wrap_width), cx) {
2306 editor.snapshot(cx)
2307 } else {
2308 snapshot
2309 }
2310 };
2311
2312 let wrap_guides = editor
2313 .wrap_guides(cx)
2314 .iter()
2315 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2316 .collect();
2317
2318 let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2319 if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2320 size.set_y(
2321 scroll_height
2322 .min(constraint.max_along(Axis::Vertical))
2323 .max(constraint.min_along(Axis::Vertical))
2324 .min(line_height * max_lines as f32),
2325 )
2326 } else if let EditorMode::SingleLine = snapshot.mode {
2327 size.set_y(
2328 line_height
2329 .min(constraint.max_along(Axis::Vertical))
2330 .max(constraint.min_along(Axis::Vertical)),
2331 )
2332 } else if size.y().is_infinite() {
2333 size.set_y(scroll_height);
2334 }
2335 let gutter_size = vec2f(gutter_width, size.y());
2336 let text_size = vec2f(text_width, size.y());
2337
2338 let autoscroll_horizontally = editor.autoscroll_vertically(size.y(), line_height, cx);
2339 let mut snapshot = editor.snapshot(cx);
2340
2341 let scroll_position = snapshot.scroll_position();
2342 // The scroll position is a fractional point, the whole number of which represents
2343 // the top of the window in terms of display rows.
2344 let start_row = scroll_position.y() as u32;
2345 let height_in_lines = size.y() / line_height;
2346 let max_row = snapshot.max_point().row();
2347
2348 // Add 1 to ensure selections bleed off screen
2349 let end_row = 1 + cmp::min(
2350 (scroll_position.y() + height_in_lines).ceil() as u32,
2351 max_row,
2352 );
2353
2354 let start_anchor = if start_row == 0 {
2355 Anchor::min()
2356 } else {
2357 snapshot
2358 .buffer_snapshot
2359 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2360 };
2361 let end_anchor = if end_row > max_row {
2362 Anchor::max()
2363 } else {
2364 snapshot
2365 .buffer_snapshot
2366 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2367 };
2368
2369 let mut selections: Vec<(Option<ReplicaId>, Vec<SelectionLayout>)> = Vec::new();
2370 let mut active_rows = BTreeMap::new();
2371 let mut fold_ranges = Vec::new();
2372 let is_singleton = editor.is_singleton(cx);
2373
2374 let highlighted_rows = editor.highlighted_rows();
2375 let theme = theme::current(cx);
2376 let highlighted_ranges = editor.background_highlights_in_range(
2377 start_anchor..end_anchor,
2378 &snapshot.display_snapshot,
2379 theme.as_ref(),
2380 );
2381
2382 fold_ranges.extend(
2383 snapshot
2384 .folds_in_range(start_anchor..end_anchor)
2385 .map(|anchor| {
2386 let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2387 (
2388 start.row,
2389 start.to_display_point(&snapshot.display_snapshot)
2390 ..anchor.end.to_display_point(&snapshot),
2391 )
2392 }),
2393 );
2394
2395 let mut remote_selections = HashMap::default();
2396 for (replica_id, line_mode, cursor_shape, selection) in snapshot
2397 .buffer_snapshot
2398 .remote_selections_in_range(&(start_anchor..end_anchor))
2399 {
2400 let replica_id = if let Some(mapping) = &editor.replica_id_mapping {
2401 mapping.get(&replica_id).copied()
2402 } else {
2403 None
2404 };
2405
2406 // The local selections match the leader's selections.
2407 if replica_id.is_some() && replica_id == editor.leader_replica_id {
2408 continue;
2409 }
2410 remote_selections
2411 .entry(replica_id)
2412 .or_insert(Vec::new())
2413 .push(SelectionLayout::new(
2414 selection,
2415 line_mode,
2416 cursor_shape,
2417 &snapshot.display_snapshot,
2418 false,
2419 false,
2420 ));
2421 }
2422 selections.extend(remote_selections);
2423
2424 let mut newest_selection_head = None;
2425
2426 if editor.show_local_selections {
2427 let mut local_selections: Vec<Selection<Point>> = editor
2428 .selections
2429 .disjoint_in_range(start_anchor..end_anchor, cx);
2430 local_selections.extend(editor.selections.pending(cx));
2431 let mut layouts = Vec::new();
2432 let newest = editor.selections.newest(cx);
2433 for selection in local_selections.drain(..) {
2434 let is_empty = selection.start == selection.end;
2435 let is_newest = selection == newest;
2436
2437 let layout = SelectionLayout::new(
2438 selection,
2439 editor.selections.line_mode,
2440 editor.cursor_shape,
2441 &snapshot.display_snapshot,
2442 is_newest,
2443 true,
2444 );
2445 if is_newest {
2446 newest_selection_head = Some(layout.head);
2447 }
2448
2449 for row in cmp::max(layout.active_rows.start, start_row)
2450 ..=cmp::min(layout.active_rows.end, end_row)
2451 {
2452 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2453 *contains_non_empty_selection |= !is_empty;
2454 }
2455 layouts.push(layout);
2456 }
2457
2458 // Render the local selections in the leader's color when following.
2459 let local_replica_id = if let Some(leader_replica_id) = editor.leader_replica_id {
2460 leader_replica_id
2461 } else {
2462 let replica_id = editor.replica_id(cx);
2463 if let Some(mapping) = &editor.replica_id_mapping {
2464 mapping.get(&replica_id).copied().unwrap_or(replica_id)
2465 } else {
2466 replica_id
2467 }
2468 };
2469
2470 selections.push((Some(local_replica_id), layouts));
2471 }
2472
2473 let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2474 let show_scrollbars = match scrollbar_settings.show {
2475 ShowScrollbar::Auto => {
2476 // Git
2477 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2478 ||
2479 // Selections
2480 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
2481 // Scrollmanager
2482 || editor.scroll_manager.scrollbars_visible()
2483 }
2484 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2485 ShowScrollbar::Always => true,
2486 ShowScrollbar::Never => false,
2487 };
2488
2489 let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2490 .into_iter()
2491 .map(|(id, fold)| {
2492 let color = self
2493 .style
2494 .folds
2495 .ellipses
2496 .background
2497 .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2498 .color;
2499
2500 (id, fold, color)
2501 })
2502 .collect();
2503
2504 let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2505 start_row..end_row,
2506 &active_rows,
2507 is_singleton,
2508 &snapshot,
2509 cx,
2510 );
2511
2512 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2513
2514 let scrollbar_row_range = scroll_position.y()..(scroll_position.y() + height_in_lines);
2515
2516 let mut max_visible_line_width = 0.0;
2517 let line_layouts =
2518 self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2519 for line_with_invisibles in &line_layouts {
2520 if line_with_invisibles.line.width() > max_visible_line_width {
2521 max_visible_line_width = line_with_invisibles.line.width();
2522 }
2523 }
2524
2525 let style = self.style.clone();
2526 let longest_line_width = layout_line(
2527 snapshot.longest_row(),
2528 &snapshot,
2529 &style,
2530 cx.text_layout_cache(),
2531 )
2532 .width();
2533 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x();
2534 let em_width = style.text.em_width(cx.font_cache());
2535 let (scroll_width, blocks) = self.layout_blocks(
2536 start_row..end_row,
2537 &snapshot,
2538 size.x(),
2539 scroll_width,
2540 gutter_padding,
2541 gutter_width,
2542 em_width,
2543 gutter_width + gutter_margin,
2544 line_height,
2545 &style,
2546 &line_layouts,
2547 editor,
2548 cx,
2549 );
2550
2551 let scroll_max = vec2f(
2552 ((scroll_width - text_size.x()) / em_width).max(0.0),
2553 max_row as f32,
2554 );
2555
2556 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x());
2557
2558 let autoscrolled = if autoscroll_horizontally {
2559 editor.autoscroll_horizontally(
2560 start_row,
2561 text_size.x(),
2562 scroll_width,
2563 em_width,
2564 &line_layouts,
2565 cx,
2566 )
2567 } else {
2568 false
2569 };
2570
2571 if clamped || autoscrolled {
2572 snapshot = editor.snapshot(cx);
2573 }
2574
2575 let style = editor.style(cx);
2576
2577 let mut context_menu = None;
2578 let mut code_actions_indicator = None;
2579 if let Some(newest_selection_head) = newest_selection_head {
2580 if (start_row..end_row).contains(&newest_selection_head.row()) {
2581 if editor.context_menu_visible() {
2582 context_menu =
2583 editor.render_context_menu(newest_selection_head, style.clone(), cx);
2584 }
2585
2586 let active = matches!(
2587 editor.context_menu,
2588 Some(crate::ContextMenu::CodeActions(_))
2589 );
2590
2591 code_actions_indicator = editor
2592 .render_code_actions_indicator(&style, active, cx)
2593 .map(|indicator| (newest_selection_head.row(), indicator));
2594 }
2595 }
2596
2597 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2598 let mut hover = editor
2599 .hover_state
2600 .render(&snapshot, &style, visible_rows, cx);
2601 let mode = editor.mode;
2602
2603 let mut fold_indicators = editor.render_fold_indicators(
2604 fold_statuses,
2605 &style,
2606 editor.gutter_hovered,
2607 line_height,
2608 gutter_margin,
2609 cx,
2610 );
2611
2612 if let Some((_, context_menu)) = context_menu.as_mut() {
2613 context_menu.layout(
2614 SizeConstraint {
2615 min: Vector2F::zero(),
2616 max: vec2f(
2617 cx.window_size().x() * 0.7,
2618 (12. * line_height).min((size.y() - line_height) / 2.),
2619 ),
2620 },
2621 editor,
2622 cx,
2623 );
2624 }
2625
2626 if let Some((_, indicator)) = code_actions_indicator.as_mut() {
2627 indicator.layout(
2628 SizeConstraint::strict_along(
2629 Axis::Vertical,
2630 line_height * style.code_actions.vertical_scale,
2631 ),
2632 editor,
2633 cx,
2634 );
2635 }
2636
2637 for fold_indicator in fold_indicators.iter_mut() {
2638 if let Some(indicator) = fold_indicator.as_mut() {
2639 indicator.layout(
2640 SizeConstraint::strict_along(
2641 Axis::Vertical,
2642 line_height * style.code_actions.vertical_scale,
2643 ),
2644 editor,
2645 cx,
2646 );
2647 }
2648 }
2649
2650 if let Some((_, hover_popovers)) = hover.as_mut() {
2651 for hover_popover in hover_popovers.iter_mut() {
2652 hover_popover.layout(
2653 SizeConstraint {
2654 min: Vector2F::zero(),
2655 max: vec2f(
2656 (120. * em_width) // Default size
2657 .min(size.x() / 2.) // Shrink to half of the editor width
2658 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2659 (16. * line_height) // Default size
2660 .min(size.y() / 2.) // Shrink to half of the editor height
2661 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2662 ),
2663 },
2664 editor,
2665 cx,
2666 );
2667 }
2668 }
2669
2670 let invisible_symbol_font_size = self.style.text.font_size / 2.0;
2671 let invisible_symbol_style = RunStyle {
2672 color: self.style.whitespace,
2673 font_id: self.style.text.font_id,
2674 underline: Default::default(),
2675 };
2676
2677 (
2678 size,
2679 LayoutState {
2680 mode,
2681 position_map: Arc::new(PositionMap {
2682 size,
2683 scroll_max,
2684 line_layouts,
2685 line_height,
2686 em_width,
2687 em_advance,
2688 snapshot,
2689 }),
2690 visible_display_row_range: start_row..end_row,
2691 wrap_guides,
2692 gutter_size,
2693 gutter_padding,
2694 text_size,
2695 scrollbar_row_range,
2696 show_scrollbars,
2697 is_singleton,
2698 max_row,
2699 gutter_margin,
2700 active_rows,
2701 highlighted_rows,
2702 highlighted_ranges,
2703 fold_ranges,
2704 line_number_layouts,
2705 display_hunks,
2706 blocks,
2707 selections,
2708 context_menu,
2709 code_actions_indicator,
2710 fold_indicators,
2711 tab_invisible: cx.text_layout_cache().layout_str(
2712 "→",
2713 invisible_symbol_font_size,
2714 &[("→".len(), invisible_symbol_style)],
2715 ),
2716 space_invisible: cx.text_layout_cache().layout_str(
2717 "•",
2718 invisible_symbol_font_size,
2719 &[("•".len(), invisible_symbol_style)],
2720 ),
2721 hover_popovers: hover,
2722 },
2723 )
2724 }
2725
2726 fn paint(
2727 &mut self,
2728 scene: &mut SceneBuilder,
2729 bounds: RectF,
2730 visible_bounds: RectF,
2731 layout: &mut Self::LayoutState,
2732 editor: &mut Editor,
2733 cx: &mut PaintContext<Editor>,
2734 ) -> Self::PaintState {
2735 let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
2736 scene.push_layer(Some(visible_bounds));
2737
2738 let gutter_bounds = RectF::new(bounds.origin(), layout.gutter_size);
2739 let text_bounds = RectF::new(
2740 bounds.origin() + vec2f(layout.gutter_size.x(), 0.0),
2741 layout.text_size,
2742 );
2743
2744 Self::attach_mouse_handlers(
2745 scene,
2746 &layout.position_map,
2747 layout.hover_popovers.is_some(),
2748 visible_bounds,
2749 text_bounds,
2750 gutter_bounds,
2751 bounds,
2752 cx,
2753 );
2754
2755 self.paint_background(scene, gutter_bounds, text_bounds, layout);
2756 if layout.gutter_size.x() > 0. {
2757 self.paint_gutter(scene, gutter_bounds, visible_bounds, layout, editor, cx);
2758 }
2759 self.paint_text(scene, text_bounds, visible_bounds, layout, editor, cx);
2760
2761 scene.push_layer(Some(bounds));
2762 if !layout.blocks.is_empty() {
2763 self.paint_blocks(scene, bounds, visible_bounds, layout, editor, cx);
2764 }
2765 self.paint_scrollbar(scene, bounds, layout, cx, &editor);
2766 scene.pop_layer();
2767
2768 scene.pop_layer();
2769 }
2770
2771 fn rect_for_text_range(
2772 &self,
2773 range_utf16: Range<usize>,
2774 bounds: RectF,
2775 _: RectF,
2776 layout: &Self::LayoutState,
2777 _: &Self::PaintState,
2778 _: &Editor,
2779 _: &ViewContext<Editor>,
2780 ) -> Option<RectF> {
2781 let text_bounds = RectF::new(
2782 bounds.origin() + vec2f(layout.gutter_size.x(), 0.0),
2783 layout.text_size,
2784 );
2785 let content_origin = text_bounds.origin() + vec2f(layout.gutter_margin, 0.);
2786 let scroll_position = layout.position_map.snapshot.scroll_position();
2787 let start_row = scroll_position.y() as u32;
2788 let scroll_top = scroll_position.y() * layout.position_map.line_height;
2789 let scroll_left = scroll_position.x() * layout.position_map.em_width;
2790
2791 let range_start = OffsetUtf16(range_utf16.start)
2792 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2793 if range_start.row() < start_row {
2794 return None;
2795 }
2796
2797 let line = &layout
2798 .position_map
2799 .line_layouts
2800 .get((range_start.row() - start_row) as usize)?
2801 .line;
2802 let range_start_x = line.x_for_index(range_start.column() as usize);
2803 let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
2804 Some(RectF::new(
2805 content_origin
2806 + vec2f(
2807 range_start_x,
2808 range_start_y + layout.position_map.line_height,
2809 )
2810 - vec2f(scroll_left, scroll_top),
2811 vec2f(
2812 layout.position_map.em_width,
2813 layout.position_map.line_height,
2814 ),
2815 ))
2816 }
2817
2818 fn debug(
2819 &self,
2820 bounds: RectF,
2821 _: &Self::LayoutState,
2822 _: &Self::PaintState,
2823 _: &Editor,
2824 _: &ViewContext<Editor>,
2825 ) -> json::Value {
2826 json!({
2827 "type": "BufferElement",
2828 "bounds": bounds.to_json()
2829 })
2830 }
2831}
2832
2833type BufferRow = u32;
2834
2835pub struct LayoutState {
2836 position_map: Arc<PositionMap>,
2837 gutter_size: Vector2F,
2838 gutter_padding: f32,
2839 gutter_margin: f32,
2840 text_size: Vector2F,
2841 mode: EditorMode,
2842 wrap_guides: SmallVec<[(f32, bool); 2]>,
2843 visible_display_row_range: Range<u32>,
2844 active_rows: BTreeMap<u32, bool>,
2845 highlighted_rows: Option<Range<u32>>,
2846 line_number_layouts: Vec<Option<text_layout::Line>>,
2847 display_hunks: Vec<DisplayDiffHunk>,
2848 blocks: Vec<BlockLayout>,
2849 highlighted_ranges: Vec<(Range<DisplayPoint>, Color)>,
2850 fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)>,
2851 selections: Vec<(Option<ReplicaId>, Vec<SelectionLayout>)>,
2852 scrollbar_row_range: Range<f32>,
2853 show_scrollbars: bool,
2854 is_singleton: bool,
2855 max_row: u32,
2856 context_menu: Option<(DisplayPoint, AnyElement<Editor>)>,
2857 code_actions_indicator: Option<(u32, AnyElement<Editor>)>,
2858 hover_popovers: Option<(DisplayPoint, Vec<AnyElement<Editor>>)>,
2859 fold_indicators: Vec<Option<AnyElement<Editor>>>,
2860 tab_invisible: Line,
2861 space_invisible: Line,
2862}
2863
2864struct PositionMap {
2865 size: Vector2F,
2866 line_height: f32,
2867 scroll_max: Vector2F,
2868 em_width: f32,
2869 em_advance: f32,
2870 line_layouts: Vec<LineWithInvisibles>,
2871 snapshot: EditorSnapshot,
2872}
2873
2874#[derive(Debug)]
2875pub struct PointForPosition {
2876 previous_valid: DisplayPoint,
2877 pub next_valid: DisplayPoint,
2878 exact_unclipped: DisplayPoint,
2879 column_overshoot_after_line_end: u32,
2880}
2881
2882impl PointForPosition {
2883 #[cfg(test)]
2884 pub fn valid(valid: DisplayPoint) -> Self {
2885 Self {
2886 previous_valid: valid,
2887 next_valid: valid,
2888 exact_unclipped: valid,
2889 column_overshoot_after_line_end: 0,
2890 }
2891 }
2892
2893 fn as_valid(&self) -> Option<DisplayPoint> {
2894 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
2895 Some(self.previous_valid)
2896 } else {
2897 None
2898 }
2899 }
2900}
2901
2902impl PositionMap {
2903 fn point_for_position(&self, text_bounds: RectF, position: Vector2F) -> PointForPosition {
2904 let scroll_position = self.snapshot.scroll_position();
2905 let position = position - text_bounds.origin();
2906 let y = position.y().max(0.0).min(self.size.y());
2907 let x = position.x() + (scroll_position.x() * self.em_width);
2908 let row = (y / self.line_height + scroll_position.y()) as u32;
2909 let (column, x_overshoot_after_line_end) = if let Some(line) = self
2910 .line_layouts
2911 .get(row as usize - scroll_position.y() as usize)
2912 .map(|line_with_spaces| &line_with_spaces.line)
2913 {
2914 if let Some(ix) = line.index_for_x(x) {
2915 (ix as u32, 0.0)
2916 } else {
2917 (line.len() as u32, 0f32.max(x - line.width()))
2918 }
2919 } else {
2920 (0, x)
2921 };
2922
2923 let mut exact_unclipped = DisplayPoint::new(row, column);
2924 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
2925 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
2926
2927 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
2928 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
2929 PointForPosition {
2930 previous_valid,
2931 next_valid,
2932 exact_unclipped,
2933 column_overshoot_after_line_end,
2934 }
2935 }
2936}
2937
2938struct BlockLayout {
2939 row: u32,
2940 element: AnyElement<Editor>,
2941 style: BlockStyle,
2942}
2943
2944fn layout_line(
2945 row: u32,
2946 snapshot: &EditorSnapshot,
2947 style: &EditorStyle,
2948 layout_cache: &TextLayoutCache,
2949) -> text_layout::Line {
2950 let mut line = snapshot.line(row);
2951
2952 if line.len() > MAX_LINE_LEN {
2953 let mut len = MAX_LINE_LEN;
2954 while !line.is_char_boundary(len) {
2955 len -= 1;
2956 }
2957
2958 line.truncate(len);
2959 }
2960
2961 layout_cache.layout_str(
2962 &line,
2963 style.text.font_size,
2964 &[(
2965 snapshot.line_len(row) as usize,
2966 RunStyle {
2967 font_id: style.text.font_id,
2968 color: Color::black(),
2969 underline: Default::default(),
2970 },
2971 )],
2972 )
2973}
2974
2975#[derive(Debug)]
2976pub struct Cursor {
2977 origin: Vector2F,
2978 block_width: f32,
2979 line_height: f32,
2980 color: Color,
2981 shape: CursorShape,
2982 block_text: Option<Line>,
2983}
2984
2985impl Cursor {
2986 pub fn new(
2987 origin: Vector2F,
2988 block_width: f32,
2989 line_height: f32,
2990 color: Color,
2991 shape: CursorShape,
2992 block_text: Option<Line>,
2993 ) -> Cursor {
2994 Cursor {
2995 origin,
2996 block_width,
2997 line_height,
2998 color,
2999 shape,
3000 block_text,
3001 }
3002 }
3003
3004 pub fn bounding_rect(&self, origin: Vector2F) -> RectF {
3005 RectF::new(
3006 self.origin + origin,
3007 vec2f(self.block_width, self.line_height),
3008 )
3009 }
3010
3011 pub fn paint(&self, scene: &mut SceneBuilder, origin: Vector2F, cx: &mut WindowContext) {
3012 let bounds = match self.shape {
3013 CursorShape::Bar => RectF::new(self.origin + origin, vec2f(2.0, self.line_height)),
3014 CursorShape::Block | CursorShape::Hollow => RectF::new(
3015 self.origin + origin,
3016 vec2f(self.block_width, self.line_height),
3017 ),
3018 CursorShape::Underscore => RectF::new(
3019 self.origin + origin + Vector2F::new(0.0, self.line_height - 2.0),
3020 vec2f(self.block_width, 2.0),
3021 ),
3022 };
3023
3024 //Draw background or border quad
3025 if matches!(self.shape, CursorShape::Hollow) {
3026 scene.push_quad(Quad {
3027 bounds,
3028 background: None,
3029 border: Border::all(1., self.color),
3030 corner_radii: Default::default(),
3031 });
3032 } else {
3033 scene.push_quad(Quad {
3034 bounds,
3035 background: Some(self.color),
3036 border: Default::default(),
3037 corner_radii: Default::default(),
3038 });
3039 }
3040
3041 if let Some(block_text) = &self.block_text {
3042 block_text.paint(scene, self.origin + origin, bounds, self.line_height, cx);
3043 }
3044 }
3045
3046 pub fn shape(&self) -> CursorShape {
3047 self.shape
3048 }
3049}
3050
3051#[derive(Debug)]
3052pub struct HighlightedRange {
3053 pub start_y: f32,
3054 pub line_height: f32,
3055 pub lines: Vec<HighlightedRangeLine>,
3056 pub color: Color,
3057 pub corner_radius: f32,
3058}
3059
3060#[derive(Debug)]
3061pub struct HighlightedRangeLine {
3062 pub start_x: f32,
3063 pub end_x: f32,
3064}
3065
3066impl HighlightedRange {
3067 pub fn paint(&self, bounds: RectF, scene: &mut SceneBuilder) {
3068 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3069 self.paint_lines(self.start_y, &self.lines[0..1], bounds, scene);
3070 self.paint_lines(
3071 self.start_y + self.line_height,
3072 &self.lines[1..],
3073 bounds,
3074 scene,
3075 );
3076 } else {
3077 self.paint_lines(self.start_y, &self.lines, bounds, scene);
3078 }
3079 }
3080
3081 fn paint_lines(
3082 &self,
3083 start_y: f32,
3084 lines: &[HighlightedRangeLine],
3085 bounds: RectF,
3086 scene: &mut SceneBuilder,
3087 ) {
3088 if lines.is_empty() {
3089 return;
3090 }
3091
3092 let mut path = PathBuilder::new();
3093 let first_line = lines.first().unwrap();
3094 let last_line = lines.last().unwrap();
3095
3096 let first_top_left = vec2f(first_line.start_x, start_y);
3097 let first_top_right = vec2f(first_line.end_x, start_y);
3098
3099 let curve_height = vec2f(0., self.corner_radius);
3100 let curve_width = |start_x: f32, end_x: f32| {
3101 let max = (end_x - start_x) / 2.;
3102 let width = if max < self.corner_radius {
3103 max
3104 } else {
3105 self.corner_radius
3106 };
3107
3108 vec2f(width, 0.)
3109 };
3110
3111 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3112 path.reset(first_top_right - top_curve_width);
3113 path.curve_to(first_top_right + curve_height, first_top_right);
3114
3115 let mut iter = lines.iter().enumerate().peekable();
3116 while let Some((ix, line)) = iter.next() {
3117 let bottom_right = vec2f(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3118
3119 if let Some((_, next_line)) = iter.peek() {
3120 let next_top_right = vec2f(next_line.end_x, bottom_right.y());
3121
3122 match next_top_right.x().partial_cmp(&bottom_right.x()).unwrap() {
3123 Ordering::Equal => {
3124 path.line_to(bottom_right);
3125 }
3126 Ordering::Less => {
3127 let curve_width = curve_width(next_top_right.x(), bottom_right.x());
3128 path.line_to(bottom_right - curve_height);
3129 if self.corner_radius > 0. {
3130 path.curve_to(bottom_right - curve_width, bottom_right);
3131 }
3132 path.line_to(next_top_right + curve_width);
3133 if self.corner_radius > 0. {
3134 path.curve_to(next_top_right + curve_height, next_top_right);
3135 }
3136 }
3137 Ordering::Greater => {
3138 let curve_width = curve_width(bottom_right.x(), next_top_right.x());
3139 path.line_to(bottom_right - curve_height);
3140 if self.corner_radius > 0. {
3141 path.curve_to(bottom_right + curve_width, bottom_right);
3142 }
3143 path.line_to(next_top_right - curve_width);
3144 if self.corner_radius > 0. {
3145 path.curve_to(next_top_right + curve_height, next_top_right);
3146 }
3147 }
3148 }
3149 } else {
3150 let curve_width = curve_width(line.start_x, line.end_x);
3151 path.line_to(bottom_right - curve_height);
3152 if self.corner_radius > 0. {
3153 path.curve_to(bottom_right - curve_width, bottom_right);
3154 }
3155
3156 let bottom_left = vec2f(line.start_x, bottom_right.y());
3157 path.line_to(bottom_left + curve_width);
3158 if self.corner_radius > 0. {
3159 path.curve_to(bottom_left - curve_height, bottom_left);
3160 }
3161 }
3162 }
3163
3164 if first_line.start_x > last_line.start_x {
3165 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3166 let second_top_left = vec2f(last_line.start_x, start_y + self.line_height);
3167 path.line_to(second_top_left + curve_height);
3168 if self.corner_radius > 0. {
3169 path.curve_to(second_top_left + curve_width, second_top_left);
3170 }
3171 let first_bottom_left = vec2f(first_line.start_x, second_top_left.y());
3172 path.line_to(first_bottom_left - curve_width);
3173 if self.corner_radius > 0. {
3174 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3175 }
3176 }
3177
3178 path.line_to(first_top_left + curve_height);
3179 if self.corner_radius > 0. {
3180 path.curve_to(first_top_left + top_curve_width, first_top_left);
3181 }
3182 path.line_to(first_top_right - top_curve_width);
3183
3184 scene.push_path(path.build(self.color, Some(bounds)));
3185 }
3186}
3187
3188fn range_to_bounds(
3189 range: &Range<DisplayPoint>,
3190 content_origin: Vector2F,
3191 scroll_left: f32,
3192 scroll_top: f32,
3193 visible_row_range: &Range<u32>,
3194 line_end_overshoot: f32,
3195 position_map: &PositionMap,
3196) -> impl Iterator<Item = RectF> {
3197 let mut bounds: SmallVec<[RectF; 1]> = SmallVec::new();
3198
3199 if range.start == range.end {
3200 return bounds.into_iter();
3201 }
3202
3203 let start_row = visible_row_range.start;
3204 let end_row = visible_row_range.end;
3205
3206 let row_range = if range.end.column() == 0 {
3207 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3208 } else {
3209 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
3210 };
3211
3212 let first_y =
3213 content_origin.y() + row_range.start as f32 * position_map.line_height - scroll_top;
3214
3215 for (idx, row) in row_range.enumerate() {
3216 let line_layout = &position_map.line_layouts[(row - start_row) as usize].line;
3217
3218 let start_x = if row == range.start.row() {
3219 content_origin.x() + line_layout.x_for_index(range.start.column() as usize)
3220 - scroll_left
3221 } else {
3222 content_origin.x() - scroll_left
3223 };
3224
3225 let end_x = if row == range.end.row() {
3226 content_origin.x() + line_layout.x_for_index(range.end.column() as usize) - scroll_left
3227 } else {
3228 content_origin.x() + line_layout.width() + line_end_overshoot - scroll_left
3229 };
3230
3231 bounds.push(RectF::from_points(
3232 vec2f(start_x, first_y + position_map.line_height * idx as f32),
3233 vec2f(end_x, first_y + position_map.line_height * (idx + 1) as f32),
3234 ))
3235 }
3236
3237 bounds.into_iter()
3238}
3239
3240pub fn scale_vertical_mouse_autoscroll_delta(delta: f32) -> f32 {
3241 delta.powf(1.5) / 100.0
3242}
3243
3244fn scale_horizontal_mouse_autoscroll_delta(delta: f32) -> f32 {
3245 delta.powf(1.2) / 300.0
3246}
3247
3248#[cfg(test)]
3249mod tests {
3250 use super::*;
3251 use crate::{
3252 display_map::{BlockDisposition, BlockProperties},
3253 editor_tests::{init_test, update_test_language_settings},
3254 Editor, MultiBuffer,
3255 };
3256 use gpui::TestAppContext;
3257 use language::language_settings;
3258 use log::info;
3259 use std::{num::NonZeroU32, sync::Arc};
3260 use util::test::sample_text;
3261
3262 #[gpui::test]
3263 fn test_layout_line_numbers(cx: &mut TestAppContext) {
3264 init_test(cx, |_| {});
3265
3266 let editor = cx
3267 .add_window(|cx| {
3268 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3269 Editor::new(EditorMode::Full, buffer, None, None, cx)
3270 })
3271 .root(cx);
3272 let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3273
3274 let layouts = editor.update(cx, |editor, cx| {
3275 let snapshot = editor.snapshot(cx);
3276 element
3277 .layout_line_numbers(0..6, &Default::default(), false, &snapshot, cx)
3278 .0
3279 });
3280 assert_eq!(layouts.len(), 6);
3281 }
3282
3283 #[gpui::test]
3284 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3285 init_test(cx, |_| {});
3286
3287 let editor = cx
3288 .add_window(|cx| {
3289 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3290 Editor::new(EditorMode::Full, buffer, None, None, cx)
3291 })
3292 .root(cx);
3293 let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3294 let (_, state) = editor.update(cx, |editor, cx| {
3295 editor.cursor_shape = CursorShape::Block;
3296 editor.change_selections(None, cx, |s| {
3297 s.select_ranges([
3298 Point::new(0, 0)..Point::new(1, 0),
3299 Point::new(3, 2)..Point::new(3, 3),
3300 Point::new(5, 6)..Point::new(6, 0),
3301 ]);
3302 });
3303 let mut new_parents = Default::default();
3304 let mut notify_views_if_parents_change = Default::default();
3305 let mut layout_cx = LayoutContext::new(
3306 cx,
3307 &mut new_parents,
3308 &mut notify_views_if_parents_change,
3309 false,
3310 );
3311 element.layout(
3312 SizeConstraint::new(vec2f(500., 500.), vec2f(500., 500.)),
3313 editor,
3314 &mut layout_cx,
3315 )
3316 });
3317 assert_eq!(state.selections.len(), 1);
3318 let local_selections = &state.selections[0].1;
3319 assert_eq!(local_selections.len(), 3);
3320 // moves cursor back one line
3321 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3322 assert_eq!(
3323 local_selections[0].range,
3324 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3325 );
3326
3327 // moves cursor back one column
3328 assert_eq!(
3329 local_selections[1].range,
3330 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3331 );
3332 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3333
3334 // leaves cursor on the max point
3335 assert_eq!(
3336 local_selections[2].range,
3337 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3338 );
3339 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3340
3341 // active lines does not include 1 (even though the range of the selection does)
3342 assert_eq!(
3343 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3344 vec![0, 3, 5, 6]
3345 );
3346
3347 // multi-buffer support
3348 // in DisplayPoint co-ordinates, this is what we're dealing with:
3349 // 0: [[file
3350 // 1: header]]
3351 // 2: aaaaaa
3352 // 3: bbbbbb
3353 // 4: cccccc
3354 // 5:
3355 // 6: ...
3356 // 7: ffffff
3357 // 8: gggggg
3358 // 9: hhhhhh
3359 // 10:
3360 // 11: [[file
3361 // 12: header]]
3362 // 13: bbbbbb
3363 // 14: cccccc
3364 // 15: dddddd
3365 let editor = cx
3366 .add_window(|cx| {
3367 let buffer = MultiBuffer::build_multi(
3368 [
3369 (
3370 &(sample_text(8, 6, 'a') + "\n"),
3371 vec![
3372 Point::new(0, 0)..Point::new(3, 0),
3373 Point::new(4, 0)..Point::new(7, 0),
3374 ],
3375 ),
3376 (
3377 &(sample_text(8, 6, 'a') + "\n"),
3378 vec![Point::new(1, 0)..Point::new(3, 0)],
3379 ),
3380 ],
3381 cx,
3382 );
3383 Editor::new(EditorMode::Full, buffer, None, None, cx)
3384 })
3385 .root(cx);
3386 let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3387 let (_, state) = editor.update(cx, |editor, cx| {
3388 editor.cursor_shape = CursorShape::Block;
3389 editor.change_selections(None, cx, |s| {
3390 s.select_display_ranges([
3391 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3392 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3393 ]);
3394 });
3395 let mut new_parents = Default::default();
3396 let mut notify_views_if_parents_change = Default::default();
3397 let mut layout_cx = LayoutContext::new(
3398 cx,
3399 &mut new_parents,
3400 &mut notify_views_if_parents_change,
3401 false,
3402 );
3403 element.layout(
3404 SizeConstraint::new(vec2f(500., 500.), vec2f(500., 500.)),
3405 editor,
3406 &mut layout_cx,
3407 )
3408 });
3409
3410 assert_eq!(state.selections.len(), 1);
3411 let local_selections = &state.selections[0].1;
3412 assert_eq!(local_selections.len(), 2);
3413
3414 // moves cursor on excerpt boundary back a line
3415 // and doesn't allow selection to bleed through
3416 assert_eq!(
3417 local_selections[0].range,
3418 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3419 );
3420 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3421
3422 // moves cursor on buffer boundary back two lines
3423 // and doesn't allow selection to bleed through
3424 assert_eq!(
3425 local_selections[1].range,
3426 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3427 );
3428 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3429 }
3430
3431 #[gpui::test]
3432 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3433 init_test(cx, |_| {});
3434
3435 let editor = cx
3436 .add_window(|cx| {
3437 let buffer = MultiBuffer::build_simple("", cx);
3438 Editor::new(EditorMode::Full, buffer, None, None, cx)
3439 })
3440 .root(cx);
3441
3442 editor.update(cx, |editor, cx| {
3443 editor.set_placeholder_text("hello", cx);
3444 editor.insert_blocks(
3445 [BlockProperties {
3446 style: BlockStyle::Fixed,
3447 disposition: BlockDisposition::Above,
3448 height: 3,
3449 position: Anchor::min(),
3450 render: Arc::new(|_| Empty::new().into_any()),
3451 }],
3452 None,
3453 cx,
3454 );
3455
3456 // Blur the editor so that it displays placeholder text.
3457 cx.blur();
3458 });
3459
3460 let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3461 let (size, mut state) = editor.update(cx, |editor, cx| {
3462 let mut new_parents = Default::default();
3463 let mut notify_views_if_parents_change = Default::default();
3464 let mut layout_cx = LayoutContext::new(
3465 cx,
3466 &mut new_parents,
3467 &mut notify_views_if_parents_change,
3468 false,
3469 );
3470 element.layout(
3471 SizeConstraint::new(vec2f(500., 500.), vec2f(500., 500.)),
3472 editor,
3473 &mut layout_cx,
3474 )
3475 });
3476
3477 assert_eq!(state.position_map.line_layouts.len(), 4);
3478 assert_eq!(
3479 state
3480 .line_number_layouts
3481 .iter()
3482 .map(Option::is_some)
3483 .collect::<Vec<_>>(),
3484 &[false, false, false, true]
3485 );
3486
3487 // Don't panic.
3488 let mut scene = SceneBuilder::new(1.0);
3489 let bounds = RectF::new(Default::default(), size);
3490 editor.update(cx, |editor, cx| {
3491 element.paint(
3492 &mut scene,
3493 bounds,
3494 bounds,
3495 &mut state,
3496 editor,
3497 &mut PaintContext::new(cx),
3498 );
3499 });
3500 }
3501
3502 #[gpui::test]
3503 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3504 const TAB_SIZE: u32 = 4;
3505
3506 let input_text = "\t \t|\t| a b";
3507 let expected_invisibles = vec![
3508 Invisible::Tab {
3509 line_start_offset: 0,
3510 },
3511 Invisible::Whitespace {
3512 line_offset: TAB_SIZE as usize,
3513 },
3514 Invisible::Tab {
3515 line_start_offset: TAB_SIZE as usize + 1,
3516 },
3517 Invisible::Tab {
3518 line_start_offset: TAB_SIZE as usize * 2 + 1,
3519 },
3520 Invisible::Whitespace {
3521 line_offset: TAB_SIZE as usize * 3 + 1,
3522 },
3523 Invisible::Whitespace {
3524 line_offset: TAB_SIZE as usize * 3 + 3,
3525 },
3526 ];
3527 assert_eq!(
3528 expected_invisibles.len(),
3529 input_text
3530 .chars()
3531 .filter(|initial_char| initial_char.is_whitespace())
3532 .count(),
3533 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3534 );
3535
3536 init_test(cx, |s| {
3537 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3538 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3539 });
3540
3541 let actual_invisibles =
3542 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3543
3544 assert_eq!(expected_invisibles, actual_invisibles);
3545 }
3546
3547 #[gpui::test]
3548 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3549 init_test(cx, |s| {
3550 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3551 s.defaults.tab_size = NonZeroU32::new(4);
3552 });
3553
3554 for editor_mode_without_invisibles in [
3555 EditorMode::SingleLine,
3556 EditorMode::AutoHeight { max_lines: 100 },
3557 ] {
3558 let invisibles = collect_invisibles_from_new_editor(
3559 cx,
3560 editor_mode_without_invisibles,
3561 "\t\t\t| | a b",
3562 500.0,
3563 );
3564 assert!(invisibles.is_empty(),
3565 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3566 }
3567 }
3568
3569 #[gpui::test]
3570 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3571 let tab_size = 4;
3572 let input_text = "a\tbcd ".repeat(9);
3573 let repeated_invisibles = [
3574 Invisible::Tab {
3575 line_start_offset: 1,
3576 },
3577 Invisible::Whitespace {
3578 line_offset: tab_size as usize + 3,
3579 },
3580 Invisible::Whitespace {
3581 line_offset: tab_size as usize + 4,
3582 },
3583 Invisible::Whitespace {
3584 line_offset: tab_size as usize + 5,
3585 },
3586 ];
3587 let expected_invisibles = std::iter::once(repeated_invisibles)
3588 .cycle()
3589 .take(9)
3590 .flatten()
3591 .collect::<Vec<_>>();
3592 assert_eq!(
3593 expected_invisibles.len(),
3594 input_text
3595 .chars()
3596 .filter(|initial_char| initial_char.is_whitespace())
3597 .count(),
3598 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3599 );
3600 info!("Expected invisibles: {expected_invisibles:?}");
3601
3602 init_test(cx, |_| {});
3603
3604 // Put the same string with repeating whitespace pattern into editors of various size,
3605 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3606 let resize_step = 10.0;
3607 let mut editor_width = 200.0;
3608 while editor_width <= 1000.0 {
3609 update_test_language_settings(cx, |s| {
3610 s.defaults.tab_size = NonZeroU32::new(tab_size);
3611 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3612 s.defaults.preferred_line_length = Some(editor_width as u32);
3613 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3614 });
3615
3616 let actual_invisibles =
3617 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
3618
3619 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3620 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3621 let mut i = 0;
3622 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3623 i = actual_index;
3624 match expected_invisibles.get(i) {
3625 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3626 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3627 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3628 _ => {
3629 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3630 }
3631 },
3632 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3633 }
3634 }
3635 let missing_expected_invisibles = &expected_invisibles[i + 1..];
3636 assert!(
3637 missing_expected_invisibles.is_empty(),
3638 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3639 );
3640
3641 editor_width += resize_step;
3642 }
3643 }
3644
3645 fn collect_invisibles_from_new_editor(
3646 cx: &mut TestAppContext,
3647 editor_mode: EditorMode,
3648 input_text: &str,
3649 editor_width: f32,
3650 ) -> Vec<Invisible> {
3651 info!(
3652 "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
3653 );
3654 let editor = cx
3655 .add_window(|cx| {
3656 let buffer = MultiBuffer::build_simple(&input_text, cx);
3657 Editor::new(editor_mode, buffer, None, None, cx)
3658 })
3659 .root(cx);
3660
3661 let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3662 let (_, layout_state) = editor.update(cx, |editor, cx| {
3663 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3664 editor.set_wrap_width(Some(editor_width), cx);
3665
3666 let mut new_parents = Default::default();
3667 let mut notify_views_if_parents_change = Default::default();
3668 let mut layout_cx = LayoutContext::new(
3669 cx,
3670 &mut new_parents,
3671 &mut notify_views_if_parents_change,
3672 false,
3673 );
3674 element.layout(
3675 SizeConstraint::new(vec2f(editor_width, 500.), vec2f(editor_width, 500.)),
3676 editor,
3677 &mut layout_cx,
3678 )
3679 });
3680
3681 layout_state
3682 .position_map
3683 .line_layouts
3684 .iter()
3685 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3686 .flatten()
3687 .cloned()
3688 .collect()
3689 }
3690}