1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::ShowScrollbar,
7 git::{diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::hover_at,
9 link_go_to_definition::{
10 go_to_fetched_definition, go_to_fetched_type_definition, update_go_to_definition_link,
11 update_inlay_link_and_hover_points, GoToDefinitionTrigger,
12 },
13 scroll::scroll_amount::ScrollAmount,
14 CursorShape, DisplayPoint, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
15 HalfPageDown, HalfPageUp, LineDown, LineUp, MoveDown, PageDown, PageUp, Point, SelectPhase,
16 Selection, SoftWrap, ToPoint, MAX_LINE_LEN,
17};
18use anyhow::Result;
19use collections::{BTreeMap, HashMap};
20use gpui::{
21 point, px, relative, size, transparent_black, Action, AnyElement, AvailableSpace, BorrowWindow,
22 Bounds, Component, ContentMask, Corners, DispatchPhase, Edges, Element, ElementId,
23 ElementInputHandler, Entity, EntityId, Hsla, Line, MouseButton, MouseDownEvent, MouseMoveEvent,
24 MouseUpEvent, ParentComponent, Pixels, ScrollWheelEvent, Size, Style, Styled, TextRun,
25 TextStyle, View, ViewContext, WindowContext,
26};
27use itertools::Itertools;
28use language::language_settings::ShowWhitespaceSetting;
29use multi_buffer::Anchor;
30use project::{
31 project_settings::{GitGutterSetting, ProjectSettings},
32 ProjectPath,
33};
34use settings::Settings;
35use smallvec::SmallVec;
36use std::{
37 any::TypeId,
38 borrow::Cow,
39 cmp::{self, Ordering},
40 fmt::Write,
41 iter,
42 ops::Range,
43 sync::Arc,
44};
45use sum_tree::Bias;
46use theme::{ActiveTheme, PlayerColor};
47use ui::{h_stack, IconButton};
48use util::ResultExt;
49use workspace::item::Item;
50
51enum FoldMarkers {}
52
53struct SelectionLayout {
54 head: DisplayPoint,
55 cursor_shape: CursorShape,
56 is_newest: bool,
57 is_local: bool,
58 range: Range<DisplayPoint>,
59 active_rows: Range<u32>,
60}
61
62impl SelectionLayout {
63 fn new<T: ToPoint + ToDisplayPoint + Clone>(
64 selection: Selection<T>,
65 line_mode: bool,
66 cursor_shape: CursorShape,
67 map: &DisplaySnapshot,
68 is_newest: bool,
69 is_local: bool,
70 ) -> Self {
71 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
72 let display_selection = point_selection.map(|p| p.to_display_point(map));
73 let mut range = display_selection.range();
74 let mut head = display_selection.head();
75 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
76 ..map.next_line_boundary(point_selection.end).1.row();
77
78 // vim visual line mode
79 if line_mode {
80 let point_range = map.expand_to_line(point_selection.range());
81 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
82 }
83
84 // any vim visual mode (including line mode)
85 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
86 if head.column() > 0 {
87 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
88 } else if head.row() > 0 && head != map.max_point() {
89 head = map.clip_point(
90 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
91 Bias::Left,
92 );
93 // updating range.end is a no-op unless you're cursor is
94 // on the newline containing a multi-buffer divider
95 // in which case the clip_point may have moved the head up
96 // an additional row.
97 range.end = DisplayPoint::new(head.row() + 1, 0);
98 active_rows.end = head.row();
99 }
100 }
101
102 Self {
103 head,
104 cursor_shape,
105 is_newest,
106 is_local,
107 range,
108 active_rows,
109 }
110 }
111}
112
113pub struct EditorElement {
114 editor_id: EntityId,
115 style: EditorStyle,
116}
117
118impl EditorElement {
119 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
120 Self {
121 editor_id: editor.entity_id(),
122 style,
123 }
124 }
125
126 fn mouse_down(
127 editor: &mut Editor,
128 event: &MouseDownEvent,
129 position_map: &PositionMap,
130 text_bounds: Bounds<Pixels>,
131 gutter_bounds: Bounds<Pixels>,
132 cx: &mut ViewContext<Editor>,
133 ) -> bool {
134 let mut click_count = event.click_count;
135 let modifiers = event.modifiers;
136
137 if gutter_bounds.contains_point(&event.position) {
138 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
139 } else if !text_bounds.contains_point(&event.position) {
140 return false;
141 }
142
143 let point_for_position = position_map.point_for_position(text_bounds, event.position);
144 let position = point_for_position.previous_valid;
145 if modifiers.shift && modifiers.alt {
146 editor.select(
147 SelectPhase::BeginColumnar {
148 position,
149 goal_column: point_for_position.exact_unclipped.column(),
150 },
151 cx,
152 );
153 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
154 editor.select(
155 SelectPhase::Extend {
156 position,
157 click_count,
158 },
159 cx,
160 );
161 } else {
162 editor.select(
163 SelectPhase::Begin {
164 position,
165 add: modifiers.alt,
166 click_count,
167 },
168 cx,
169 );
170 }
171
172 true
173 }
174
175 // fn mouse_right_down(
176 // editor: &mut Editor,
177 // position: gpui::Point<Pixels>,
178 // position_map: &PositionMap,
179 // text_bounds: Bounds<Pixels>,
180 // cx: &mut EventContext<Editor>,
181 // ) -> bool {
182 // if !text_bounds.contains_point(position) {
183 // return false;
184 // }
185 // let point_for_position = position_map.point_for_position(text_bounds, position);
186 // mouse_context_menu::deploy_context_menu(
187 // editor,
188 // position,
189 // point_for_position.previous_valid,
190 // cx,
191 // );
192 // true
193 // }
194
195 fn mouse_up(
196 editor: &mut Editor,
197 event: &MouseUpEvent,
198 position_map: &PositionMap,
199 text_bounds: Bounds<Pixels>,
200 cx: &mut ViewContext<Editor>,
201 ) -> bool {
202 let end_selection = editor.has_pending_selection();
203 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
204
205 if end_selection {
206 editor.select(SelectPhase::End, cx);
207 }
208
209 if !pending_nonempty_selections
210 && event.modifiers.command
211 && text_bounds.contains_point(&event.position)
212 {
213 let point = position_map.point_for_position(text_bounds, event.position);
214 let could_be_inlay = point.as_valid().is_none();
215 let split = event.modifiers.alt;
216 if event.modifiers.shift || could_be_inlay {
217 go_to_fetched_type_definition(editor, point, split, cx);
218 } else {
219 go_to_fetched_definition(editor, point, split, cx);
220 }
221
222 return true;
223 }
224
225 end_selection
226 }
227
228 fn mouse_moved(
229 editor: &mut Editor,
230 event: &MouseMoveEvent,
231 position_map: &PositionMap,
232 text_bounds: Bounds<Pixels>,
233 gutter_bounds: Bounds<Pixels>,
234 cx: &mut ViewContext<Editor>,
235 ) -> bool {
236 let modifiers = event.modifiers;
237 if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
238 let point_for_position = position_map.point_for_position(text_bounds, event.position);
239 let mut scroll_delta = gpui::Point::<f32>::zero();
240 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
241 let top = text_bounds.origin.y + vertical_margin;
242 let bottom = text_bounds.lower_left().y - vertical_margin;
243 if event.position.y < top {
244 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
245 }
246 if event.position.y > bottom {
247 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
248 }
249
250 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
251 let left = text_bounds.origin.x + horizontal_margin;
252 let right = text_bounds.upper_right().x - horizontal_margin;
253 if event.position.x < left {
254 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
255 }
256 if event.position.x > right {
257 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
258 }
259
260 editor.select(
261 SelectPhase::Update {
262 position: point_for_position.previous_valid,
263 goal_column: point_for_position.exact_unclipped.column(),
264 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
265 .clamp(&gpui::Point::zero(), &position_map.scroll_max),
266 },
267 cx,
268 );
269 }
270
271 let text_hovered = text_bounds.contains_point(&event.position);
272 let gutter_hovered = gutter_bounds.contains_point(&event.position);
273 editor.set_gutter_hovered(gutter_hovered, cx);
274
275 // Don't trigger hover popover if mouse is hovering over context menu
276 if text_hovered {
277 let point_for_position = position_map.point_for_position(text_bounds, event.position);
278
279 match point_for_position.as_valid() {
280 Some(point) => {
281 update_go_to_definition_link(
282 editor,
283 Some(GoToDefinitionTrigger::Text(point)),
284 modifiers.command,
285 modifiers.shift,
286 cx,
287 );
288 hover_at(editor, Some(point), cx);
289 }
290 None => {
291 update_inlay_link_and_hover_points(
292 &position_map.snapshot,
293 point_for_position,
294 editor,
295 modifiers.command,
296 modifiers.shift,
297 cx,
298 );
299 }
300 }
301
302 true
303 } else {
304 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
305 hover_at(editor, None, cx);
306 gutter_hovered
307 }
308 }
309
310 fn scroll(
311 editor: &mut Editor,
312 event: &ScrollWheelEvent,
313 position_map: &PositionMap,
314 bounds: Bounds<Pixels>,
315 cx: &mut ViewContext<Editor>,
316 ) -> bool {
317 if !bounds.contains_point(&event.position) {
318 return false;
319 }
320
321 let line_height = position_map.line_height;
322 let max_glyph_width = position_map.em_width;
323 let (delta, axis) = match event.delta {
324 gpui::ScrollDelta::Pixels(mut pixels) => {
325 //Trackpad
326 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
327 (pixels, axis)
328 }
329
330 gpui::ScrollDelta::Lines(lines) => {
331 //Not trackpad
332 let pixels = point(lines.x * max_glyph_width, lines.y * line_height);
333 (pixels, None)
334 }
335 };
336
337 let scroll_position = position_map.snapshot.scroll_position();
338 let x = f32::from((scroll_position.x * max_glyph_width - delta.x) / max_glyph_width);
339 let y = f32::from((scroll_position.y * line_height - delta.y) / line_height);
340 let scroll_position = point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
341 editor.scroll(scroll_position, axis, cx);
342
343 true
344 }
345
346 fn paint_background(
347 &self,
348 gutter_bounds: Bounds<Pixels>,
349 text_bounds: Bounds<Pixels>,
350 layout: &LayoutState,
351 cx: &mut ViewContext<Editor>,
352 ) {
353 let bounds = gutter_bounds.union(&text_bounds);
354 let scroll_top =
355 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
356 let gutter_bg = cx.theme().colors().editor_gutter_background;
357 cx.paint_quad(
358 gutter_bounds,
359 Corners::default(),
360 gutter_bg,
361 Edges::default(),
362 transparent_black(),
363 );
364 cx.paint_quad(
365 text_bounds,
366 Corners::default(),
367 self.style.background,
368 Edges::default(),
369 transparent_black(),
370 );
371
372 if let EditorMode::Full = layout.mode {
373 let mut active_rows = layout.active_rows.iter().peekable();
374 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
375 let mut end_row = *start_row;
376 while active_rows.peek().map_or(false, |r| {
377 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
378 }) {
379 active_rows.next().unwrap();
380 end_row += 1;
381 }
382
383 if !contains_non_empty_selection {
384 let origin = point(
385 bounds.origin.x,
386 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
387 - scroll_top,
388 );
389 let size = size(
390 bounds.size.width,
391 layout.position_map.line_height * (end_row - start_row + 1) as f32,
392 );
393 let active_line_bg = cx.theme().colors().editor_active_line_background;
394 cx.paint_quad(
395 Bounds { origin, size },
396 Corners::default(),
397 active_line_bg,
398 Edges::default(),
399 transparent_black(),
400 );
401 }
402 }
403
404 if let Some(highlighted_rows) = &layout.highlighted_rows {
405 let origin = point(
406 bounds.origin.x,
407 bounds.origin.y
408 + (layout.position_map.line_height * highlighted_rows.start as f32)
409 - scroll_top,
410 );
411 let size = size(
412 bounds.size.width,
413 layout.position_map.line_height * highlighted_rows.len() as f32,
414 );
415 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
416 cx.paint_quad(
417 Bounds { origin, size },
418 Corners::default(),
419 highlighted_line_bg,
420 Edges::default(),
421 transparent_black(),
422 );
423 }
424
425 let scroll_left =
426 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
427
428 for (wrap_position, active) in layout.wrap_guides.iter() {
429 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
430 - scroll_left;
431
432 if x < text_bounds.origin.x
433 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
434 {
435 continue;
436 }
437
438 let color = if *active {
439 cx.theme().colors().editor_active_wrap_guide
440 } else {
441 cx.theme().colors().editor_wrap_guide
442 };
443 cx.paint_quad(
444 Bounds {
445 origin: point(x, text_bounds.origin.y),
446 size: size(px(1.), text_bounds.size.height),
447 },
448 Corners::default(),
449 color,
450 Edges::default(),
451 transparent_black(),
452 );
453 }
454 }
455 }
456
457 fn paint_gutter(
458 &mut self,
459 bounds: Bounds<Pixels>,
460 layout: &mut LayoutState,
461 editor: &mut Editor,
462 cx: &mut ViewContext<Editor>,
463 ) {
464 let line_height = layout.position_map.line_height;
465
466 let scroll_position = layout.position_map.snapshot.scroll_position();
467 let scroll_top = scroll_position.y * line_height;
468
469 let show_gutter = matches!(
470 ProjectSettings::get_global(cx).git.git_gutter,
471 Some(GitGutterSetting::TrackedFiles)
472 );
473
474 if show_gutter {
475 Self::paint_diff_hunks(bounds, layout, cx);
476 }
477
478 for (ix, line) in layout.line_number_layouts.iter().enumerate() {
479 if let Some(line) = line {
480 let line_origin = bounds.origin
481 + point(
482 bounds.size.width - line.width - layout.gutter_padding,
483 ix as f32 * line_height - (scroll_top % line_height),
484 );
485
486 line.paint(line_origin, line_height, cx);
487 }
488 }
489
490 // todo!("fold indicators")
491 // for (ix, fold_indicator) in layout.fold_indicators.iter_mut().enumerate() {
492 // if let Some(indicator) = fold_indicator.as_mut() {
493 // let position = point(
494 // bounds.width() - layout.gutter_padding,
495 // ix as f32 * line_height - (scroll_top % line_height),
496 // );
497 // let centering_offset = point(
498 // (layout.gutter_padding + layout.gutter_margin - indicator.size().x) / 2.,
499 // (line_height - indicator.size().y) / 2.,
500 // );
501
502 // let indicator_origin = bounds.origin + position + centering_offset;
503
504 // indicator.paint(indicator_origin, visible_bounds, editor, cx);
505 // }
506 // }
507
508 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
509 let available_space = size(
510 AvailableSpace::MinContent,
511 AvailableSpace::Definite(line_height),
512 );
513 let indicator_size = indicator.element.measure(available_space, editor, cx);
514 let mut x = Pixels::ZERO;
515 let mut y = indicator.row as f32 * line_height - scroll_top;
516 // Center indicator.
517 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
518 y += (line_height - indicator_size.height) / 2.;
519 indicator
520 .element
521 .draw(bounds.origin + point(x, y), available_space, editor, cx);
522 }
523 }
524
525 fn paint_diff_hunks(
526 bounds: Bounds<Pixels>,
527 layout: &LayoutState,
528 cx: &mut ViewContext<Editor>,
529 ) {
530 // todo!()
531 // let diff_style = &theme::current(cx).editor.diff.clone();
532 // let line_height = layout.position_map.line_height;
533
534 // let scroll_position = layout.position_map.snapshot.scroll_position();
535 // let scroll_top = scroll_position.y * line_height;
536
537 // for hunk in &layout.display_hunks {
538 // let (display_row_range, status) = match hunk {
539 // //TODO: This rendering is entirely a horrible hack
540 // &DisplayDiffHunk::Folded { display_row: row } => {
541 // let start_y = row as f32 * line_height - scroll_top;
542 // let end_y = start_y + line_height;
543
544 // let width = diff_style.removed_width_em * line_height;
545 // let highlight_origin = bounds.origin + point(-width, start_y);
546 // let highlight_size = point(width * 2., end_y - start_y);
547 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
548
549 // cx.paint_quad(Quad {
550 // bounds: highlight_bounds,
551 // background: Some(diff_style.modified),
552 // border: Border::new(0., Color::transparent_black()).into(),
553 // corner_radii: (1. * line_height).into(),
554 // });
555
556 // continue;
557 // }
558
559 // DisplayDiffHunk::Unfolded {
560 // display_row_range,
561 // status,
562 // } => (display_row_range, status),
563 // };
564
565 // let color = match status {
566 // DiffHunkStatus::Added => diff_style.inserted,
567 // DiffHunkStatus::Modified => diff_style.modified,
568
569 // //TODO: This rendering is entirely a horrible hack
570 // DiffHunkStatus::Removed => {
571 // let row = display_row_range.start;
572
573 // let offset = line_height / 2.;
574 // let start_y = row as f32 * line_height - offset - scroll_top;
575 // let end_y = start_y + line_height;
576
577 // let width = diff_style.removed_width_em * line_height;
578 // let highlight_origin = bounds.origin + point(-width, start_y);
579 // let highlight_size = point(width * 2., end_y - start_y);
580 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
581
582 // cx.paint_quad(Quad {
583 // bounds: highlight_bounds,
584 // background: Some(diff_style.deleted),
585 // border: Border::new(0., Color::transparent_black()).into(),
586 // corner_radii: (1. * line_height).into(),
587 // });
588
589 // continue;
590 // }
591 // };
592
593 // let start_row = display_row_range.start;
594 // let end_row = display_row_range.end;
595
596 // let start_y = start_row as f32 * line_height - scroll_top;
597 // let end_y = end_row as f32 * line_height - scroll_top;
598
599 // let width = diff_style.width_em * line_height;
600 // let highlight_origin = bounds.origin + point(-width, start_y);
601 // let highlight_size = point(width * 2., end_y - start_y);
602 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
603
604 // cx.paint_quad(Quad {
605 // bounds: highlight_bounds,
606 // background: Some(color),
607 // border: Border::new(0., Color::transparent_black()).into(),
608 // corner_radii: (diff_style.corner_radius * line_height).into(),
609 // });
610 // }
611 }
612
613 fn paint_text(
614 &mut self,
615 bounds: Bounds<Pixels>,
616 layout: &mut LayoutState,
617 editor: &mut Editor,
618 cx: &mut ViewContext<Editor>,
619 ) {
620 let scroll_position = layout.position_map.snapshot.scroll_position();
621 let start_row = layout.visible_display_row_range.start;
622 let scroll_top = scroll_position.y * layout.position_map.line_height;
623 let max_glyph_width = layout.position_map.em_width;
624 let scroll_left = scroll_position.x * max_glyph_width;
625 let content_origin = bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
626 let line_end_overshoot = 0.15 * layout.position_map.line_height;
627 let whitespace_setting = editor.buffer.read(cx).settings_at(0, cx).show_whitespaces;
628
629 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
630 // todo!("cursor region")
631 // cx.scene().push_cursor_region(CursorRegion {
632 // bounds,
633 // style: if !editor.link_go_to_definition_state.definitions.is_empty {
634 // CursorStyle::PointingHand
635 // } else {
636 // CursorStyle::IBeam
637 // },
638 // });
639
640 // todo!("fold ranges")
641 // let fold_corner_radius =
642 // self.style.folds.ellipses.corner_radius_factor * layout.position_map.line_height;
643 // for (id, range, color) in layout.fold_ranges.iter() {
644 // self.paint_highlighted_range(
645 // range.clone(),
646 // *color,
647 // fold_corner_radius,
648 // fold_corner_radius * 2.,
649 // layout,
650 // content_origin,
651 // scroll_top,
652 // scroll_left,
653 // bounds,
654 // cx,
655 // );
656
657 // for bound in range_to_bounds(
658 // &range,
659 // content_origin,
660 // scroll_left,
661 // scroll_top,
662 // &layout.visible_display_row_range,
663 // line_end_overshoot,
664 // &layout.position_map,
665 // ) {
666 // cx.scene().push_cursor_region(CursorRegion {
667 // bounds: bound,
668 // style: CursorStyle::PointingHand,
669 // });
670
671 // let display_row = range.start.row();
672
673 // let buffer_row = DisplayPoint::new(display_row, 0)
674 // .to_point(&layout.position_map.snapshot.display_snapshot)
675 // .row;
676
677 // let view_id = cx.view_id();
678 // cx.scene().push_mouse_region(
679 // MouseRegion::new::<FoldMarkers>(view_id, *id as usize, bound)
680 // .on_click(MouseButton::Left, move |_, editor: &mut Editor, cx| {
681 // editor.unfold_at(&UnfoldAt { buffer_row }, cx)
682 // })
683 // .with_notify_on_hover(true)
684 // .with_notify_on_click(true),
685 // )
686 // }
687 // }
688
689 for (range, color) in &layout.highlighted_ranges {
690 self.paint_highlighted_range(
691 range.clone(),
692 *color,
693 Pixels::ZERO,
694 line_end_overshoot,
695 layout,
696 content_origin,
697 scroll_top,
698 scroll_left,
699 bounds,
700 cx,
701 );
702 }
703
704 let mut cursors = SmallVec::<[Cursor; 32]>::new();
705 let corner_radius = 0.15 * layout.position_map.line_height;
706 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
707
708 for (selection_style, selections) in &layout.selections {
709 for selection in selections {
710 self.paint_highlighted_range(
711 selection.range.clone(),
712 selection_style.selection,
713 corner_radius,
714 corner_radius * 2.,
715 layout,
716 content_origin,
717 scroll_top,
718 scroll_left,
719 bounds,
720 cx,
721 );
722
723 if selection.is_local && !selection.range.is_empty() {
724 invisible_display_ranges.push(selection.range.clone());
725 }
726
727 if !selection.is_local || editor.show_local_cursors(cx) {
728 let cursor_position = selection.head;
729 if layout
730 .visible_display_row_range
731 .contains(&cursor_position.row())
732 {
733 let cursor_row_layout = &layout.position_map.line_layouts
734 [(cursor_position.row() - start_row) as usize]
735 .line;
736 let cursor_column = cursor_position.column() as usize;
737
738 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
739 let mut block_width = cursor_row_layout.x_for_index(cursor_column + 1)
740 - cursor_character_x;
741 if block_width == Pixels::ZERO {
742 block_width = layout.position_map.em_width;
743 }
744 let block_text = if let CursorShape::Block = selection.cursor_shape {
745 layout
746 .position_map
747 .snapshot
748 .chars_at(cursor_position)
749 .next()
750 .and_then(|(character, _)| {
751 let text = character.to_string();
752 cx.text_system()
753 .layout_text(
754 &text,
755 cursor_row_layout.font_size,
756 &[TextRun {
757 len: text.len(),
758 font: self.style.text.font(),
759 color: self.style.background,
760 underline: None,
761 }],
762 None,
763 )
764 .unwrap()
765 .pop()
766 })
767 } else {
768 None
769 };
770
771 let x = cursor_character_x - scroll_left;
772 let y = cursor_position.row() as f32 * layout.position_map.line_height
773 - scroll_top;
774 if selection.is_newest {
775 editor.pixel_position_of_newest_cursor = Some(point(
776 bounds.origin.x + x + block_width / 2.,
777 bounds.origin.y + y + layout.position_map.line_height / 2.,
778 ));
779 }
780 cursors.push(Cursor {
781 color: selection_style.cursor,
782 block_width,
783 origin: point(x, y),
784 line_height: layout.position_map.line_height,
785 shape: selection.cursor_shape,
786 block_text,
787 });
788 }
789 }
790 }
791 }
792
793 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
794 let row = start_row + ix as u32;
795 line_with_invisibles.draw(
796 layout,
797 row,
798 scroll_top,
799 content_origin,
800 scroll_left,
801 whitespace_setting,
802 &invisible_display_ranges,
803 cx,
804 )
805 }
806
807 cx.with_z_index(0, |cx| {
808 for cursor in cursors {
809 cursor.paint(content_origin, cx);
810 }
811 });
812
813 if let Some((position, context_menu)) = layout.context_menu.as_mut() {
814 cx.with_z_index(1, |cx| {
815 let line_height = self.style.text.line_height_in_pixels(cx.rem_size());
816 let available_space = size(
817 AvailableSpace::MinContent,
818 AvailableSpace::Definite(
819 (12. * line_height).min((bounds.size.height - line_height) / 2.),
820 ),
821 );
822 let context_menu_size = context_menu.measure(available_space, editor, cx);
823
824 let cursor_row_layout = &layout.position_map.line_layouts
825 [(position.row() - start_row) as usize]
826 .line;
827 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_left;
828 let y =
829 (position.row() + 1) as f32 * layout.position_map.line_height - scroll_top;
830 let mut list_origin = content_origin + point(x, y);
831 let list_width = context_menu_size.width;
832 let list_height = context_menu_size.height;
833
834 // Snap the right edge of the list to the right edge of the window if
835 // its horizontal bounds overflow.
836 if list_origin.x + list_width > cx.viewport_size().width {
837 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
838 }
839
840 if list_origin.y + list_height > bounds.lower_right().y {
841 list_origin.y -= layout.position_map.line_height - list_height;
842 }
843
844 context_menu.draw(list_origin, available_space, editor, cx);
845 })
846 }
847
848 // if let Some((position, hover_popovers)) = layout.hover_popovers.as_mut() {
849 // cx.scene().push_stacking_context(None, None);
850
851 // // This is safe because we check on layout whether the required row is available
852 // let hovered_row_layout =
853 // &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
854
855 // // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
856 // // height. This is the size we will use to decide whether to render popovers above or below
857 // // the hovered line.
858 // let first_size = hover_popovers[0].size();
859 // let height_to_reserve = first_size.y
860 // + 1.5 * MIN_POPOVER_LINE_HEIGHT as f32 * layout.position_map.line_height;
861
862 // // Compute Hovered Point
863 // let x = hovered_row_layout.x_for_index(position.column() as usize) - scroll_left;
864 // let y = position.row() as f32 * layout.position_map.line_height - scroll_top;
865 // let hovered_point = content_origin + point(x, y);
866
867 // if hovered_point.y - height_to_reserve > 0.0 {
868 // // There is enough space above. Render popovers above the hovered point
869 // let mut current_y = hovered_point.y;
870 // for hover_popover in hover_popovers {
871 // let size = hover_popover.size();
872 // let mut popover_origin = point(hovered_point.x, current_y - size.y);
873
874 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
875 // if x_out_of_bounds < 0.0 {
876 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
877 // }
878
879 // hover_popover.paint(
880 // popover_origin,
881 // Bounds::<Pixels>::from_points(
882 // gpui::Point::<Pixels>::zero(),
883 // point(f32::MAX, f32::MAX),
884 // ), // Let content bleed outside of editor
885 // editor,
886 // cx,
887 // );
888
889 // current_y = popover_origin.y - HOVER_POPOVER_GAP;
890 // }
891 // } else {
892 // // There is not enough space above. Render popovers below the hovered point
893 // let mut current_y = hovered_point.y + layout.position_map.line_height;
894 // for hover_popover in hover_popovers {
895 // let size = hover_popover.size();
896 // let mut popover_origin = point(hovered_point.x, current_y);
897
898 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
899 // if x_out_of_bounds < 0.0 {
900 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
901 // }
902
903 // hover_popover.paint(
904 // popover_origin,
905 // Bounds::<Pixels>::from_points(
906 // gpui::Point::<Pixels>::zero(),
907 // point(f32::MAX, f32::MAX),
908 // ), // Let content bleed outside of editor
909 // editor,
910 // cx,
911 // );
912
913 // current_y = popover_origin.y + size.y + HOVER_POPOVER_GAP;
914 // }
915 // }
916
917 // cx.scene().pop_stacking_context();
918 // }
919 })
920 }
921
922 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
923 bounds.upper_right().x - self.style.scrollbar_width
924 }
925
926 // fn paint_scrollbar(
927 // &mut self,
928 // bounds: Bounds<Pixels>,
929 // layout: &mut LayoutState,
930 // editor: &Editor,
931 // cx: &mut ViewContext<Editor>,
932 // ) {
933 // enum ScrollbarMouseHandlers {}
934 // if layout.mode != EditorMode::Full {
935 // return;
936 // }
937
938 // let style = &self.style.theme.scrollbar;
939
940 // let top = bounds.min_y;
941 // let bottom = bounds.max_y;
942 // let right = bounds.max_x;
943 // let left = self.scrollbar_left(&bounds);
944 // let row_range = &layout.scrollbar_row_range;
945 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
946
947 // let mut height = bounds.height();
948 // let mut first_row_y_offset = 0.0;
949
950 // // Impose a minimum height on the scrollbar thumb
951 // let row_height = height / max_row;
952 // let min_thumb_height =
953 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
954 // let thumb_height = (row_range.end - row_range.start) * row_height;
955 // if thumb_height < min_thumb_height {
956 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
957 // height -= min_thumb_height - thumb_height;
958 // }
959
960 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
961
962 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
963 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
964 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
965 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
966
967 // if layout.show_scrollbars {
968 // cx.paint_quad(Quad {
969 // bounds: track_bounds,
970 // border: style.track.border.into(),
971 // background: style.track.background_color,
972 // ..Default::default()
973 // });
974 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
975 // let theme = theme::current(cx);
976 // let scrollbar_theme = &theme.editor.scrollbar;
977 // if layout.is_singleton && scrollbar_settings.selections {
978 // let start_anchor = Anchor::min();
979 // let end_anchor = Anchor::max;
980 // let color = scrollbar_theme.selections;
981 // let border = Border {
982 // width: 1.,
983 // color: style.thumb.border.color,
984 // overlay: false,
985 // top: false,
986 // right: true,
987 // bottom: false,
988 // left: true,
989 // };
990 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
991 // let start_y = y_for_row(start.row() as f32);
992 // let mut end_y = y_for_row(end.row() as f32);
993 // if end_y - start_y < 1. {
994 // end_y = start_y + 1.;
995 // }
996 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
997
998 // cx.paint_quad(Quad {
999 // bounds,
1000 // background: Some(color),
1001 // border: border.into(),
1002 // corner_radii: style.thumb.corner_radii.into(),
1003 // })
1004 // };
1005 // let background_ranges = editor
1006 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1007 // start_anchor..end_anchor,
1008 // &layout.position_map.snapshot,
1009 // 50000,
1010 // );
1011 // for row in background_ranges {
1012 // let start = row.start();
1013 // let end = row.end();
1014 // push_region(*start, *end);
1015 // }
1016 // }
1017
1018 // if layout.is_singleton && scrollbar_settings.git_diff {
1019 // let diff_style = scrollbar_theme.git.clone();
1020 // for hunk in layout
1021 // .position_map
1022 // .snapshot
1023 // .buffer_snapshot
1024 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1025 // {
1026 // let start_display = Point::new(hunk.buffer_range.start, 0)
1027 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1028 // let end_display = Point::new(hunk.buffer_range.end, 0)
1029 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1030 // let start_y = y_for_row(start_display.row() as f32);
1031 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1032 // y_for_row((end_display.row() + 1) as f32)
1033 // } else {
1034 // y_for_row((end_display.row()) as f32)
1035 // };
1036
1037 // if end_y - start_y < 1. {
1038 // end_y = start_y + 1.;
1039 // }
1040 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1041
1042 // let color = match hunk.status() {
1043 // DiffHunkStatus::Added => diff_style.inserted,
1044 // DiffHunkStatus::Modified => diff_style.modified,
1045 // DiffHunkStatus::Removed => diff_style.deleted,
1046 // };
1047
1048 // let border = Border {
1049 // width: 1.,
1050 // color: style.thumb.border.color,
1051 // overlay: false,
1052 // top: false,
1053 // right: true,
1054 // bottom: false,
1055 // left: true,
1056 // };
1057
1058 // cx.paint_quad(Quad {
1059 // bounds,
1060 // background: Some(color),
1061 // border: border.into(),
1062 // corner_radii: style.thumb.corner_radii.into(),
1063 // })
1064 // }
1065 // }
1066
1067 // cx.paint_quad(Quad {
1068 // bounds: thumb_bounds,
1069 // border: style.thumb.border.into(),
1070 // background: style.thumb.background_color,
1071 // corner_radii: style.thumb.corner_radii.into(),
1072 // });
1073 // }
1074
1075 // cx.scene().push_cursor_region(CursorRegion {
1076 // bounds: track_bounds,
1077 // style: CursorStyle::Arrow,
1078 // });
1079 // let region_id = cx.view_id();
1080 // cx.scene().push_mouse_region(
1081 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1082 // .on_move(move |event, editor: &mut Editor, cx| {
1083 // if event.pressed_button.is_none() {
1084 // editor.scroll_manager.show_scrollbar(cx);
1085 // }
1086 // })
1087 // .on_down(MouseButton::Left, {
1088 // let row_range = row_range.clone();
1089 // move |event, editor: &mut Editor, cx| {
1090 // let y = event.position.y;
1091 // if y < thumb_top || thumb_bottom < y {
1092 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1093 // let top_row = center_row
1094 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1095 // let mut position = editor.scroll_position(cx);
1096 // position.set_y(top_row as f32);
1097 // editor.set_scroll_position(position, cx);
1098 // } else {
1099 // editor.scroll_manager.show_scrollbar(cx);
1100 // }
1101 // }
1102 // })
1103 // .on_drag(MouseButton::Left, {
1104 // move |event, editor: &mut Editor, cx| {
1105 // if event.end {
1106 // return;
1107 // }
1108
1109 // let y = event.prev_mouse_position.y;
1110 // let new_y = event.position.y;
1111 // if thumb_top < y && y < thumb_bottom {
1112 // let mut position = editor.scroll_position(cx);
1113 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1114 // if position.y < 0.0 {
1115 // position.set_y(0.);
1116 // }
1117 // editor.set_scroll_position(position, cx);
1118 // }
1119 // }
1120 // }),
1121 // );
1122 // }
1123
1124 #[allow(clippy::too_many_arguments)]
1125 fn paint_highlighted_range(
1126 &self,
1127 range: Range<DisplayPoint>,
1128 color: Hsla,
1129 corner_radius: Pixels,
1130 line_end_overshoot: Pixels,
1131 layout: &LayoutState,
1132 content_origin: gpui::Point<Pixels>,
1133 scroll_top: Pixels,
1134 scroll_left: Pixels,
1135 bounds: Bounds<Pixels>,
1136 cx: &mut ViewContext<Editor>,
1137 ) {
1138 let start_row = layout.visible_display_row_range.start;
1139 let end_row = layout.visible_display_row_range.end;
1140 if range.start != range.end {
1141 let row_range = if range.end.column() == 0 {
1142 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1143 } else {
1144 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1145 };
1146
1147 let highlighted_range = HighlightedRange {
1148 color,
1149 line_height: layout.position_map.line_height,
1150 corner_radius,
1151 start_y: content_origin.y
1152 + row_range.start as f32 * layout.position_map.line_height
1153 - scroll_top,
1154 lines: row_range
1155 .into_iter()
1156 .map(|row| {
1157 let line_layout =
1158 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1159 HighlightedRangeLine {
1160 start_x: if row == range.start.row() {
1161 content_origin.x
1162 + line_layout.x_for_index(range.start.column() as usize)
1163 - scroll_left
1164 } else {
1165 content_origin.x - scroll_left
1166 },
1167 end_x: if row == range.end.row() {
1168 content_origin.x
1169 + line_layout.x_for_index(range.end.column() as usize)
1170 - scroll_left
1171 } else {
1172 content_origin.x + line_layout.width + line_end_overshoot
1173 - scroll_left
1174 },
1175 }
1176 })
1177 .collect(),
1178 };
1179
1180 highlighted_range.paint(bounds, cx);
1181 }
1182 }
1183
1184 fn paint_blocks(
1185 &mut self,
1186 bounds: Bounds<Pixels>,
1187 layout: &mut LayoutState,
1188 editor: &mut Editor,
1189 cx: &mut ViewContext<Editor>,
1190 ) {
1191 let scroll_position = layout.position_map.snapshot.scroll_position();
1192 let scroll_left = scroll_position.x * layout.position_map.em_width;
1193 let scroll_top = scroll_position.y * layout.position_map.line_height;
1194
1195 for block in &mut layout.blocks {
1196 let mut origin = bounds.origin
1197 + point(
1198 Pixels::ZERO,
1199 block.row as f32 * layout.position_map.line_height - scroll_top,
1200 );
1201 if !matches!(block.style, BlockStyle::Sticky) {
1202 origin += point(-scroll_left, Pixels::ZERO);
1203 }
1204 block
1205 .element
1206 .draw(origin, block.available_space, editor, cx);
1207 }
1208 }
1209
1210 fn column_pixels(&self, column: usize, cx: &ViewContext<Editor>) -> Pixels {
1211 let style = &self.style;
1212 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1213 let layout = cx
1214 .text_system()
1215 .layout_text(
1216 " ".repeat(column).as_str(),
1217 font_size,
1218 &[TextRun {
1219 len: column,
1220 font: style.text.font(),
1221 color: Hsla::default(),
1222 underline: None,
1223 }],
1224 None,
1225 )
1226 .unwrap();
1227
1228 layout[0].width
1229 }
1230
1231 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &ViewContext<Editor>) -> Pixels {
1232 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1233 self.column_pixels(digit_count, cx)
1234 }
1235
1236 //Folds contained in a hunk are ignored apart from shrinking visual size
1237 //If a fold contains any hunks then that fold line is marked as modified
1238 fn layout_git_gutters(
1239 &self,
1240 display_rows: Range<u32>,
1241 snapshot: &EditorSnapshot,
1242 ) -> Vec<DisplayDiffHunk> {
1243 let buffer_snapshot = &snapshot.buffer_snapshot;
1244
1245 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1246 .to_point(snapshot)
1247 .row;
1248 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1249 .to_point(snapshot)
1250 .row;
1251
1252 buffer_snapshot
1253 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1254 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1255 .dedup()
1256 .collect()
1257 }
1258
1259 fn calculate_relative_line_numbers(
1260 &self,
1261 snapshot: &EditorSnapshot,
1262 rows: &Range<u32>,
1263 relative_to: Option<u32>,
1264 ) -> HashMap<u32, u32> {
1265 let mut relative_rows: HashMap<u32, u32> = Default::default();
1266 let Some(relative_to) = relative_to else {
1267 return relative_rows;
1268 };
1269
1270 let start = rows.start.min(relative_to);
1271 let end = rows.end.max(relative_to);
1272
1273 let buffer_rows = snapshot
1274 .buffer_rows(start)
1275 .take(1 + (end - start) as usize)
1276 .collect::<Vec<_>>();
1277
1278 let head_idx = relative_to - start;
1279 let mut delta = 1;
1280 let mut i = head_idx + 1;
1281 while i < buffer_rows.len() as u32 {
1282 if buffer_rows[i as usize].is_some() {
1283 if rows.contains(&(i + start)) {
1284 relative_rows.insert(i + start, delta);
1285 }
1286 delta += 1;
1287 }
1288 i += 1;
1289 }
1290 delta = 1;
1291 i = head_idx.min(buffer_rows.len() as u32 - 1);
1292 while i > 0 && buffer_rows[i as usize].is_none() {
1293 i -= 1;
1294 }
1295
1296 while i > 0 {
1297 i -= 1;
1298 if buffer_rows[i as usize].is_some() {
1299 if rows.contains(&(i + start)) {
1300 relative_rows.insert(i + start, delta);
1301 }
1302 delta += 1;
1303 }
1304 }
1305
1306 relative_rows
1307 }
1308
1309 fn layout_line_numbers(
1310 &self,
1311 rows: Range<u32>,
1312 active_rows: &BTreeMap<u32, bool>,
1313 newest_selection_head: DisplayPoint,
1314 is_singleton: bool,
1315 snapshot: &EditorSnapshot,
1316 cx: &ViewContext<Editor>,
1317 ) -> (
1318 Vec<Option<gpui::Line>>,
1319 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1320 ) {
1321 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1322 let include_line_numbers = snapshot.mode == EditorMode::Full;
1323 let mut line_number_layouts = Vec::with_capacity(rows.len());
1324 let mut fold_statuses = Vec::with_capacity(rows.len());
1325 let mut line_number = String::new();
1326 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1327 let relative_to = if is_relative {
1328 Some(newest_selection_head.row())
1329 } else {
1330 None
1331 };
1332
1333 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1334
1335 for (ix, row) in snapshot
1336 .buffer_rows(rows.start)
1337 .take((rows.end - rows.start) as usize)
1338 .enumerate()
1339 {
1340 let display_row = rows.start + ix as u32;
1341 let (active, color) = if active_rows.contains_key(&display_row) {
1342 (true, cx.theme().colors().editor_active_line_number)
1343 } else {
1344 (false, cx.theme().colors().editor_line_number)
1345 };
1346 if let Some(buffer_row) = row {
1347 if include_line_numbers {
1348 line_number.clear();
1349 let default_number = buffer_row + 1;
1350 let number = relative_rows
1351 .get(&(ix as u32 + rows.start))
1352 .unwrap_or(&default_number);
1353 write!(&mut line_number, "{}", number).unwrap();
1354 let run = TextRun {
1355 len: line_number.len(),
1356 font: self.style.text.font(),
1357 color,
1358 underline: None,
1359 };
1360 let layout = cx
1361 .text_system()
1362 .layout_text(&line_number, font_size, &[run], None)
1363 .unwrap()
1364 .pop()
1365 .unwrap();
1366 line_number_layouts.push(Some(layout));
1367 fold_statuses.push(
1368 is_singleton
1369 .then(|| {
1370 snapshot
1371 .fold_for_line(buffer_row)
1372 .map(|fold_status| (fold_status, buffer_row, active))
1373 })
1374 .flatten(),
1375 )
1376 }
1377 } else {
1378 fold_statuses.push(None);
1379 line_number_layouts.push(None);
1380 }
1381 }
1382
1383 (line_number_layouts, fold_statuses)
1384 }
1385
1386 fn layout_lines(
1387 &mut self,
1388 rows: Range<u32>,
1389 line_number_layouts: &[Option<Line>],
1390 snapshot: &EditorSnapshot,
1391 cx: &ViewContext<Editor>,
1392 ) -> Vec<LineWithInvisibles> {
1393 if rows.start >= rows.end {
1394 return Vec::new();
1395 }
1396
1397 // When the editor is empty and unfocused, then show the placeholder.
1398 if snapshot.is_empty() {
1399 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1400 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1401 let placeholder_text = snapshot.placeholder_text();
1402 let placeholder_lines = placeholder_text
1403 .as_ref()
1404 .map_or("", AsRef::as_ref)
1405 .split('\n')
1406 .skip(rows.start as usize)
1407 .chain(iter::repeat(""))
1408 .take(rows.len());
1409 placeholder_lines
1410 .map(|line| {
1411 let run = TextRun {
1412 len: line.len(),
1413 font: self.style.text.font(),
1414 color: placeholder_color,
1415 underline: Default::default(),
1416 };
1417 cx.text_system()
1418 .layout_text(line, font_size, &[run], None)
1419 .unwrap()
1420 .pop()
1421 .unwrap()
1422 })
1423 .map(|line| LineWithInvisibles {
1424 line,
1425 invisibles: Vec::new(),
1426 })
1427 .collect()
1428 } else {
1429 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1430 LineWithInvisibles::from_chunks(
1431 chunks,
1432 &self.style.text,
1433 MAX_LINE_LEN,
1434 rows.len() as usize,
1435 line_number_layouts,
1436 snapshot.mode,
1437 cx,
1438 )
1439 }
1440 }
1441
1442 fn compute_layout(
1443 &mut self,
1444 editor: &mut Editor,
1445 cx: &mut ViewContext<'_, Editor>,
1446 mut bounds: Bounds<Pixels>,
1447 ) -> LayoutState {
1448 // let mut size = constraint.max;
1449 // if size.x.is_infinite() {
1450 // unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
1451 // }
1452
1453 let snapshot = editor.snapshot(cx);
1454 let style = self.style.clone();
1455
1456 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1457 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1458 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1459 let em_width = cx
1460 .text_system()
1461 .typographic_bounds(font_id, font_size, 'm')
1462 .unwrap()
1463 .size
1464 .width;
1465 let em_advance = cx
1466 .text_system()
1467 .advance(font_id, font_size, 'm')
1468 .unwrap()
1469 .width;
1470
1471 let gutter_padding;
1472 let gutter_width;
1473 let gutter_margin;
1474 if snapshot.show_gutter {
1475 let descent = cx.text_system().descent(font_id, font_size).unwrap();
1476
1477 let gutter_padding_factor = 3.5;
1478 gutter_padding = (em_width * gutter_padding_factor).round();
1479 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1480 gutter_margin = -descent;
1481 } else {
1482 gutter_padding = Pixels::ZERO;
1483 gutter_width = Pixels::ZERO;
1484 gutter_margin = Pixels::ZERO;
1485 };
1486
1487 editor.gutter_width = gutter_width;
1488 let text_width = bounds.size.width - gutter_width;
1489 let overscroll = size(em_width, px(0.));
1490 let snapshot = {
1491 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1492
1493 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1494 let wrap_width = match editor.soft_wrap_mode(cx) {
1495 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1496 SoftWrap::EditorWidth => editor_width,
1497 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1498 };
1499
1500 if editor.set_wrap_width(Some(wrap_width), cx) {
1501 editor.snapshot(cx)
1502 } else {
1503 snapshot
1504 }
1505 };
1506
1507 let wrap_guides = editor
1508 .wrap_guides(cx)
1509 .iter()
1510 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1511 .collect::<SmallVec<[_; 2]>>();
1512
1513 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1514 // todo!("this should happen during layout")
1515 let editor_mode = snapshot.mode;
1516 if let EditorMode::AutoHeight { max_lines } = editor_mode {
1517 todo!()
1518 // size.set_y(
1519 // scroll_height
1520 // .min(constraint.max_along(Axis::Vertical))
1521 // .max(constraint.min_along(Axis::Vertical))
1522 // .max(line_height)
1523 // .min(line_height * max_lines as f32),
1524 // )
1525 } else if let EditorMode::SingleLine = editor_mode {
1526 bounds.size.height = line_height.min(bounds.size.height);
1527 }
1528 // todo!()
1529 // else if size.y.is_infinite() {
1530 // // size.set_y(scroll_height);
1531 // }
1532 //
1533 let gutter_size = size(gutter_width, bounds.size.height);
1534 let text_size = size(text_width, bounds.size.height);
1535
1536 let autoscroll_horizontally =
1537 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1538 let mut snapshot = editor.snapshot(cx);
1539
1540 let scroll_position = snapshot.scroll_position();
1541 // The scroll position is a fractional point, the whole number of which represents
1542 // the top of the window in terms of display rows.
1543 let start_row = scroll_position.y as u32;
1544 let height_in_lines = f32::from(bounds.size.height / line_height);
1545 let max_row = snapshot.max_point().row();
1546
1547 // Add 1 to ensure selections bleed off screen
1548 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1549
1550 let start_anchor = if start_row == 0 {
1551 Anchor::min()
1552 } else {
1553 snapshot
1554 .buffer_snapshot
1555 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1556 };
1557 let end_anchor = if end_row > max_row {
1558 Anchor::max()
1559 } else {
1560 snapshot
1561 .buffer_snapshot
1562 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1563 };
1564
1565 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1566 let mut active_rows = BTreeMap::new();
1567 let mut fold_ranges = Vec::new();
1568 let is_singleton = editor.is_singleton(cx);
1569
1570 let highlighted_rows = editor.highlighted_rows();
1571 let highlighted_ranges = editor.background_highlights_in_range(
1572 start_anchor..end_anchor,
1573 &snapshot.display_snapshot,
1574 cx.theme().colors(),
1575 );
1576
1577 fold_ranges.extend(
1578 snapshot
1579 .folds_in_range(start_anchor..end_anchor)
1580 .map(|anchor| {
1581 let start = anchor.start.to_point(&snapshot.buffer_snapshot);
1582 (
1583 start.row,
1584 start.to_display_point(&snapshot.display_snapshot)
1585 ..anchor.end.to_display_point(&snapshot),
1586 )
1587 }),
1588 );
1589
1590 let mut newest_selection_head = None;
1591
1592 if editor.show_local_selections {
1593 let mut local_selections: Vec<Selection<Point>> = editor
1594 .selections
1595 .disjoint_in_range(start_anchor..end_anchor, cx);
1596 local_selections.extend(editor.selections.pending(cx));
1597 let mut layouts = Vec::new();
1598 let newest = editor.selections.newest(cx);
1599 for selection in local_selections.drain(..) {
1600 let is_empty = selection.start == selection.end;
1601 let is_newest = selection == newest;
1602
1603 let layout = SelectionLayout::new(
1604 selection,
1605 editor.selections.line_mode,
1606 editor.cursor_shape,
1607 &snapshot.display_snapshot,
1608 is_newest,
1609 true,
1610 );
1611 if is_newest {
1612 newest_selection_head = Some(layout.head);
1613 }
1614
1615 for row in cmp::max(layout.active_rows.start, start_row)
1616 ..=cmp::min(layout.active_rows.end, end_row)
1617 {
1618 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1619 *contains_non_empty_selection |= !is_empty;
1620 }
1621 layouts.push(layout);
1622 }
1623
1624 selections.push((style.local_player, layouts));
1625 }
1626
1627 if let Some(collaboration_hub) = &editor.collaboration_hub {
1628 // When following someone, render the local selections in their color.
1629 if let Some(leader_id) = editor.leader_peer_id {
1630 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1631 if let Some(participant_index) = collaboration_hub
1632 .user_participant_indices(cx)
1633 .get(&collaborator.user_id)
1634 {
1635 if let Some((local_selection_style, _)) = selections.first_mut() {
1636 *local_selection_style = cx
1637 .theme()
1638 .players()
1639 .color_for_participant(participant_index.0);
1640 }
1641 }
1642 }
1643 }
1644
1645 let mut remote_selections = HashMap::default();
1646 for selection in snapshot.remote_selections_in_range(
1647 &(start_anchor..end_anchor),
1648 collaboration_hub.as_ref(),
1649 cx,
1650 ) {
1651 let selection_style = if let Some(participant_index) = selection.participant_index {
1652 cx.theme()
1653 .players()
1654 .color_for_participant(participant_index.0)
1655 } else {
1656 cx.theme().players().absent()
1657 };
1658
1659 // Don't re-render the leader's selections, since the local selections
1660 // match theirs.
1661 if Some(selection.peer_id) == editor.leader_peer_id {
1662 continue;
1663 }
1664
1665 remote_selections
1666 .entry(selection.replica_id)
1667 .or_insert((selection_style, Vec::new()))
1668 .1
1669 .push(SelectionLayout::new(
1670 selection.selection,
1671 selection.line_mode,
1672 selection.cursor_shape,
1673 &snapshot.display_snapshot,
1674 false,
1675 false,
1676 ));
1677 }
1678
1679 selections.extend(remote_selections.into_values());
1680 }
1681
1682 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1683 let show_scrollbars = match scrollbar_settings.show {
1684 ShowScrollbar::Auto => {
1685 // Git
1686 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1687 ||
1688 // Selections
1689 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1690 // Scrollmanager
1691 || editor.scroll_manager.scrollbars_visible()
1692 }
1693 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1694 ShowScrollbar::Always => true,
1695 ShowScrollbar::Never => false,
1696 };
1697
1698 let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)> = Vec::new();
1699 // todo!()
1700
1701 // fold_ranges
1702 // .into_iter()
1703 // .map(|(id, fold)| {
1704 // // todo!("folds!")
1705 // // let color = self
1706 // // .style
1707 // // .folds
1708 // // .ellipses
1709 // // .background
1710 // // .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
1711 // // .color;
1712
1713 // // (id, fold, color)
1714 // })
1715 // .collect();
1716
1717 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1718 let newest = editor.selections.newest::<Point>(cx);
1719 SelectionLayout::new(
1720 newest,
1721 editor.selections.line_mode,
1722 editor.cursor_shape,
1723 &snapshot.display_snapshot,
1724 true,
1725 true,
1726 )
1727 .head
1728 });
1729
1730 let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
1731 start_row..end_row,
1732 &active_rows,
1733 head_for_relative,
1734 is_singleton,
1735 &snapshot,
1736 cx,
1737 );
1738
1739 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1740
1741 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1742
1743 let mut max_visible_line_width = Pixels::ZERO;
1744 let line_layouts =
1745 self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
1746 for line_with_invisibles in &line_layouts {
1747 if line_with_invisibles.line.width > max_visible_line_width {
1748 max_visible_line_width = line_with_invisibles.line.width;
1749 }
1750 }
1751
1752 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1753 .unwrap()
1754 .width;
1755 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1756
1757 let (scroll_width, blocks) = self.layout_blocks(
1758 start_row..end_row,
1759 &snapshot,
1760 bounds.size.width,
1761 scroll_width,
1762 gutter_padding,
1763 gutter_width,
1764 em_width,
1765 gutter_width + gutter_margin,
1766 line_height,
1767 &style,
1768 &line_layouts,
1769 editor,
1770 cx,
1771 );
1772
1773 let scroll_max = point(
1774 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1775 max_row as f32,
1776 );
1777
1778 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1779
1780 let autoscrolled = if autoscroll_horizontally {
1781 editor.autoscroll_horizontally(
1782 start_row,
1783 text_size.width,
1784 scroll_width,
1785 em_width,
1786 &line_layouts,
1787 cx,
1788 )
1789 } else {
1790 false
1791 };
1792
1793 if clamped || autoscrolled {
1794 snapshot = editor.snapshot(cx);
1795 }
1796
1797 let mut context_menu = None;
1798 let mut code_actions_indicator = None;
1799 if let Some(newest_selection_head) = newest_selection_head {
1800 if (start_row..end_row).contains(&newest_selection_head.row()) {
1801 if editor.context_menu_visible() {
1802 context_menu =
1803 editor.render_context_menu(newest_selection_head, &self.style, cx);
1804 }
1805
1806 let active = matches!(
1807 editor.context_menu.read().as_ref(),
1808 Some(crate::ContextMenu::CodeActions(_))
1809 );
1810
1811 code_actions_indicator = editor
1812 .render_code_actions_indicator(&style, active, cx)
1813 .map(|element| CodeActionsIndicator {
1814 row: newest_selection_head.row(),
1815 element,
1816 });
1817 }
1818 }
1819
1820 let visible_rows = start_row..start_row + line_layouts.len() as u32;
1821 // todo!("hover")
1822 // let mut hover = editor.hover_state.render(
1823 // &snapshot,
1824 // &style,
1825 // visible_rows,
1826 // editor.workspace.as_ref().map(|(w, _)| w.clone()),
1827 // cx,
1828 // );
1829 // let mode = editor.mode;
1830
1831 // todo!("fold_indicators")
1832 // let mut fold_indicators = editor.render_fold_indicators(
1833 // fold_statuses,
1834 // &style,
1835 // editor.gutter_hovered,
1836 // line_height,
1837 // gutter_margin,
1838 // cx,
1839 // );
1840
1841 // todo!("context_menu")
1842 // if let Some((_, context_menu)) = context_menu.as_mut() {
1843 // context_menu.layout(
1844 // SizeConstraint {
1845 // min: gpui::Point::<Pixels>::zero(),
1846 // max: point(
1847 // cx.window_size().x * 0.7,
1848 // (12. * line_height).min((size.y - line_height) / 2.),
1849 // ),
1850 // },
1851 // editor,
1852 // cx,
1853 // );
1854 // }
1855
1856 // todo!("fold indicators")
1857 // for fold_indicator in fold_indicators.iter_mut() {
1858 // if let Some(indicator) = fold_indicator.as_mut() {
1859 // indicator.layout(
1860 // SizeConstraint::strict_along(
1861 // Axis::Vertical,
1862 // line_height * style.code_actions.vertical_scale,
1863 // ),
1864 // editor,
1865 // cx,
1866 // );
1867 // }
1868 // }
1869
1870 // todo!("hover popovers")
1871 // if let Some((_, hover_popovers)) = hover.as_mut() {
1872 // for hover_popover in hover_popovers.iter_mut() {
1873 // hover_popover.layout(
1874 // SizeConstraint {
1875 // min: gpui::Point::<Pixels>::zero(),
1876 // max: point(
1877 // (120. * em_width) // Default size
1878 // .min(size.x / 2.) // Shrink to half of the editor width
1879 // .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1880 // (16. * line_height) // Default size
1881 // .min(size.y / 2.) // Shrink to half of the editor height
1882 // .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1883 // ),
1884 // },
1885 // editor,
1886 // cx,
1887 // );
1888 // }
1889 // }
1890
1891 let invisible_symbol_font_size = font_size / 2.;
1892 let tab_invisible = cx
1893 .text_system()
1894 .layout_text(
1895 "→",
1896 invisible_symbol_font_size,
1897 &[TextRun {
1898 len: "→".len(),
1899 font: self.style.text.font(),
1900 color: cx.theme().colors().editor_invisible,
1901 underline: None,
1902 }],
1903 None,
1904 )
1905 .unwrap()
1906 .pop()
1907 .unwrap();
1908 let space_invisible = cx
1909 .text_system()
1910 .layout_text(
1911 "•",
1912 invisible_symbol_font_size,
1913 &[TextRun {
1914 len: "•".len(),
1915 font: self.style.text.font(),
1916 color: cx.theme().colors().editor_invisible,
1917 underline: None,
1918 }],
1919 None,
1920 )
1921 .unwrap()
1922 .pop()
1923 .unwrap();
1924
1925 LayoutState {
1926 mode: editor_mode,
1927 position_map: Arc::new(PositionMap {
1928 size: bounds.size,
1929 scroll_max,
1930 line_layouts,
1931 line_height,
1932 em_width,
1933 em_advance,
1934 snapshot,
1935 }),
1936 visible_display_row_range: start_row..end_row,
1937 wrap_guides,
1938 gutter_size,
1939 gutter_padding,
1940 text_size,
1941 scrollbar_row_range,
1942 show_scrollbars,
1943 is_singleton,
1944 max_row,
1945 gutter_margin,
1946 active_rows,
1947 highlighted_rows,
1948 highlighted_ranges,
1949 fold_ranges,
1950 line_number_layouts,
1951 display_hunks,
1952 blocks,
1953 selections,
1954 context_menu,
1955 code_actions_indicator,
1956 // fold_indicators,
1957 tab_invisible,
1958 space_invisible,
1959 // hover_popovers: hover,
1960 }
1961 }
1962
1963 #[allow(clippy::too_many_arguments)]
1964 fn layout_blocks(
1965 &mut self,
1966 rows: Range<u32>,
1967 snapshot: &EditorSnapshot,
1968 editor_width: Pixels,
1969 scroll_width: Pixels,
1970 gutter_padding: Pixels,
1971 gutter_width: Pixels,
1972 em_width: Pixels,
1973 text_x: Pixels,
1974 line_height: Pixels,
1975 style: &EditorStyle,
1976 line_layouts: &[LineWithInvisibles],
1977 editor: &mut Editor,
1978 cx: &mut ViewContext<Editor>,
1979 ) -> (Pixels, Vec<BlockLayout>) {
1980 let mut block_id = 0;
1981 let scroll_x = snapshot.scroll_anchor.offset.x;
1982 let (fixed_blocks, non_fixed_blocks) = snapshot
1983 .blocks_in_range(rows.clone())
1984 .partition::<Vec<_>, _>(|(_, block)| match block {
1985 TransformBlock::ExcerptHeader { .. } => false,
1986 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1987 });
1988 let mut render_block = |block: &TransformBlock,
1989 available_space: Size<AvailableSpace>,
1990 block_id: usize,
1991 editor: &mut Editor,
1992 cx: &mut ViewContext<Editor>| {
1993 let mut element = match block {
1994 TransformBlock::Custom(block) => {
1995 let align_to = block
1996 .position()
1997 .to_point(&snapshot.buffer_snapshot)
1998 .to_display_point(snapshot);
1999 let anchor_x = text_x
2000 + if rows.contains(&align_to.row()) {
2001 line_layouts[(align_to.row() - rows.start) as usize]
2002 .line
2003 .x_for_index(align_to.column() as usize)
2004 } else {
2005 layout_line(align_to.row(), snapshot, style, cx)
2006 .unwrap()
2007 .x_for_index(align_to.column() as usize)
2008 };
2009
2010 block.render(&mut BlockContext {
2011 view_context: cx,
2012 anchor_x,
2013 gutter_padding,
2014 line_height,
2015 gutter_width,
2016 em_width,
2017 block_id,
2018 editor_style: &self.style,
2019 })
2020 }
2021 TransformBlock::ExcerptHeader {
2022 id,
2023 buffer,
2024 range,
2025 starts_new_buffer,
2026 ..
2027 } => {
2028 let include_root = editor
2029 .project
2030 .as_ref()
2031 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2032 .unwrap_or_default();
2033 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2034 let jump_path = ProjectPath {
2035 worktree_id: file.worktree_id(cx),
2036 path: file.path.clone(),
2037 };
2038 let jump_anchor = range
2039 .primary
2040 .as_ref()
2041 .map_or(range.context.start, |primary| primary.start);
2042 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2043
2044 // todo!("avoid ElementId collision risk here")
2045 let icon_button_id: usize = id.clone().into();
2046 IconButton::new(icon_button_id, ui::Icon::ArrowUpRight)
2047 .on_click(move |editor: &mut Editor, cx| {
2048 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2049 })
2050 .tooltip("Jump to Buffer") // todo!(pass an action as well to show key binding)
2051 });
2052
2053 let element = if *starts_new_buffer {
2054 let path = buffer.resolve_file_path(cx, include_root);
2055 let mut filename = None;
2056 let mut parent_path = None;
2057 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2058 if let Some(path) = path {
2059 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2060 parent_path =
2061 path.parent().map(|p| p.to_string_lossy().to_string() + "/");
2062 }
2063
2064 h_stack()
2065 .size_full()
2066 .bg(gpui::red())
2067 .child(filename.unwrap_or_else(|| "untitled".to_string()))
2068 .children(parent_path)
2069 .children(jump_icon) // .p_x(gutter_padding)
2070 } else {
2071 let text_style = style.text.clone();
2072 h_stack()
2073 .size_full()
2074 .bg(gpui::red())
2075 .child("⋯")
2076 .children(jump_icon) // .p_x(gutter_padding)
2077 };
2078 element.render()
2079 }
2080 };
2081
2082 let size = element.measure(available_space, editor, cx);
2083 (element, size)
2084 };
2085
2086 let mut fixed_block_max_width = Pixels::ZERO;
2087 let mut blocks = Vec::new();
2088 for (row, block) in fixed_blocks {
2089 let available_space = size(
2090 AvailableSpace::MinContent,
2091 AvailableSpace::Definite(block.height() as f32 * line_height),
2092 );
2093 let (element, element_size) =
2094 render_block(block, available_space, block_id, editor, cx);
2095 block_id += 1;
2096 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2097 blocks.push(BlockLayout {
2098 row,
2099 element,
2100 available_space,
2101 style: BlockStyle::Fixed,
2102 });
2103 }
2104 for (row, block) in non_fixed_blocks {
2105 let style = match block {
2106 TransformBlock::Custom(block) => block.style(),
2107 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2108 };
2109 let width = match style {
2110 BlockStyle::Sticky => editor_width,
2111 BlockStyle::Flex => editor_width
2112 .max(fixed_block_max_width)
2113 .max(gutter_width + scroll_width),
2114 BlockStyle::Fixed => unreachable!(),
2115 };
2116 let available_space = size(
2117 AvailableSpace::Definite(width),
2118 AvailableSpace::Definite(block.height() as f32 * line_height),
2119 );
2120 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2121 block_id += 1;
2122 blocks.push(BlockLayout {
2123 row,
2124 element,
2125 available_space,
2126 style,
2127 });
2128 }
2129 (
2130 scroll_width.max(fixed_block_max_width - gutter_width),
2131 blocks,
2132 )
2133 }
2134
2135 fn paint_mouse_listeners(
2136 &mut self,
2137 bounds: Bounds<Pixels>,
2138 gutter_bounds: Bounds<Pixels>,
2139 text_bounds: Bounds<Pixels>,
2140 position_map: &Arc<PositionMap>,
2141 cx: &mut ViewContext<Editor>,
2142 ) {
2143 cx.on_mouse_event({
2144 let position_map = position_map.clone();
2145 move |editor, event: &ScrollWheelEvent, phase, cx| {
2146 if phase != DispatchPhase::Bubble {
2147 return;
2148 }
2149
2150 if Self::scroll(editor, event, &position_map, bounds, cx) {
2151 cx.stop_propagation();
2152 }
2153 }
2154 });
2155 cx.on_mouse_event({
2156 let position_map = position_map.clone();
2157 move |editor, event: &MouseDownEvent, phase, cx| {
2158 if phase != DispatchPhase::Bubble {
2159 return;
2160 }
2161
2162 if Self::mouse_down(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2163 cx.stop_propagation()
2164 }
2165 }
2166 });
2167 cx.on_mouse_event({
2168 let position_map = position_map.clone();
2169 move |editor, event: &MouseUpEvent, phase, cx| {
2170 if phase != DispatchPhase::Bubble {
2171 return;
2172 }
2173
2174 if Self::mouse_up(editor, event, &position_map, text_bounds, cx) {
2175 cx.stop_propagation()
2176 }
2177 }
2178 });
2179 // todo!()
2180 // on_down(MouseButton::Right, {
2181 // let position_map = position_map.clone();
2182 // move |event, editor, cx| {
2183 // if !Self::mouse_right_down(
2184 // editor,
2185 // event.position,
2186 // position_map.as_ref(),
2187 // text_bounds,
2188 // cx,
2189 // ) {
2190 // cx.propagate_event();
2191 // }
2192 // }
2193 // });
2194 cx.on_mouse_event({
2195 let position_map = position_map.clone();
2196 move |editor, event: &MouseMoveEvent, phase, cx| {
2197 if phase != DispatchPhase::Bubble {
2198 return;
2199 }
2200
2201 if Self::mouse_moved(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2202 cx.stop_propagation()
2203 }
2204 }
2205 });
2206 }
2207}
2208
2209#[derive(Debug)]
2210pub struct LineWithInvisibles {
2211 pub line: Line,
2212 invisibles: Vec<Invisible>,
2213}
2214
2215impl LineWithInvisibles {
2216 fn from_chunks<'a>(
2217 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2218 text_style: &TextStyle,
2219 max_line_len: usize,
2220 max_line_count: usize,
2221 line_number_layouts: &[Option<Line>],
2222 editor_mode: EditorMode,
2223 cx: &WindowContext,
2224 ) -> Vec<Self> {
2225 let mut layouts = Vec::with_capacity(max_line_count);
2226 let mut line = String::new();
2227 let mut invisibles = Vec::new();
2228 let mut styles = Vec::new();
2229 let mut non_whitespace_added = false;
2230 let mut row = 0;
2231 let mut line_exceeded_max_len = false;
2232 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2233
2234 for highlighted_chunk in chunks.chain([HighlightedChunk {
2235 chunk: "\n",
2236 style: None,
2237 is_tab: false,
2238 }]) {
2239 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2240 if ix > 0 {
2241 let layout = cx
2242 .text_system()
2243 .layout_text(&line, font_size, &styles, None);
2244 layouts.push(Self {
2245 line: layout.unwrap().pop().unwrap(),
2246 invisibles: invisibles.drain(..).collect(),
2247 });
2248
2249 line.clear();
2250 styles.clear();
2251 row += 1;
2252 line_exceeded_max_len = false;
2253 non_whitespace_added = false;
2254 if row == max_line_count {
2255 return layouts;
2256 }
2257 }
2258
2259 if !line_chunk.is_empty() && !line_exceeded_max_len {
2260 let text_style = if let Some(style) = highlighted_chunk.style {
2261 Cow::Owned(text_style.clone().highlight(style))
2262 } else {
2263 Cow::Borrowed(text_style)
2264 };
2265
2266 if line.len() + line_chunk.len() > max_line_len {
2267 let mut chunk_len = max_line_len - line.len();
2268 while !line_chunk.is_char_boundary(chunk_len) {
2269 chunk_len -= 1;
2270 }
2271 line_chunk = &line_chunk[..chunk_len];
2272 line_exceeded_max_len = true;
2273 }
2274
2275 styles.push(TextRun {
2276 len: line_chunk.len(),
2277 font: text_style.font(),
2278 color: text_style.color,
2279 underline: text_style.underline,
2280 });
2281
2282 if editor_mode == EditorMode::Full {
2283 // Line wrap pads its contents with fake whitespaces,
2284 // avoid printing them
2285 let inside_wrapped_string = line_number_layouts
2286 .get(row)
2287 .and_then(|layout| layout.as_ref())
2288 .is_none();
2289 if highlighted_chunk.is_tab {
2290 if non_whitespace_added || !inside_wrapped_string {
2291 invisibles.push(Invisible::Tab {
2292 line_start_offset: line.len(),
2293 });
2294 }
2295 } else {
2296 invisibles.extend(
2297 line_chunk
2298 .chars()
2299 .enumerate()
2300 .filter(|(_, line_char)| {
2301 let is_whitespace = line_char.is_whitespace();
2302 non_whitespace_added |= !is_whitespace;
2303 is_whitespace
2304 && (non_whitespace_added || !inside_wrapped_string)
2305 })
2306 .map(|(whitespace_index, _)| Invisible::Whitespace {
2307 line_offset: line.len() + whitespace_index,
2308 }),
2309 )
2310 }
2311 }
2312
2313 line.push_str(line_chunk);
2314 }
2315 }
2316 }
2317
2318 layouts
2319 }
2320
2321 fn draw(
2322 &self,
2323 layout: &LayoutState,
2324 row: u32,
2325 scroll_top: Pixels,
2326 content_origin: gpui::Point<Pixels>,
2327 scroll_left: Pixels,
2328 whitespace_setting: ShowWhitespaceSetting,
2329 selection_ranges: &[Range<DisplayPoint>],
2330 cx: &mut ViewContext<Editor>,
2331 ) {
2332 let line_height = layout.position_map.line_height;
2333 let line_y = line_height * row as f32 - scroll_top;
2334
2335 self.line.paint(
2336 content_origin + gpui::point(-scroll_left, line_y),
2337 line_height,
2338 cx,
2339 );
2340
2341 self.draw_invisibles(
2342 &selection_ranges,
2343 layout,
2344 content_origin,
2345 scroll_left,
2346 line_y,
2347 row,
2348 line_height,
2349 whitespace_setting,
2350 cx,
2351 );
2352 }
2353
2354 fn draw_invisibles(
2355 &self,
2356 selection_ranges: &[Range<DisplayPoint>],
2357 layout: &LayoutState,
2358 content_origin: gpui::Point<Pixels>,
2359 scroll_left: Pixels,
2360 line_y: Pixels,
2361 row: u32,
2362 line_height: Pixels,
2363 whitespace_setting: ShowWhitespaceSetting,
2364 cx: &mut ViewContext<Editor>,
2365 ) {
2366 let allowed_invisibles_regions = match whitespace_setting {
2367 ShowWhitespaceSetting::None => return,
2368 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2369 ShowWhitespaceSetting::All => None,
2370 };
2371
2372 for invisible in &self.invisibles {
2373 let (&token_offset, invisible_symbol) = match invisible {
2374 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2375 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2376 };
2377
2378 let x_offset = self.line.x_for_index(token_offset);
2379 let invisible_offset =
2380 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2381 let origin =
2382 content_origin + gpui::point(-scroll_left + x_offset + invisible_offset, line_y);
2383
2384 if let Some(allowed_regions) = allowed_invisibles_regions {
2385 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2386 if !allowed_regions
2387 .iter()
2388 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2389 {
2390 continue;
2391 }
2392 }
2393 invisible_symbol.paint(origin, line_height, cx);
2394 }
2395 }
2396}
2397
2398#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2399enum Invisible {
2400 Tab { line_start_offset: usize },
2401 Whitespace { line_offset: usize },
2402}
2403
2404impl Element<Editor> for EditorElement {
2405 type ElementState = ();
2406
2407 fn element_id(&self) -> Option<gpui::ElementId> {
2408 Some(self.editor_id.into())
2409 }
2410
2411 fn initialize(
2412 &mut self,
2413 editor: &mut Editor,
2414 element_state: Option<Self::ElementState>,
2415 cx: &mut gpui::ViewContext<Editor>,
2416 ) -> Self::ElementState {
2417 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2418 }
2419
2420 fn layout(
2421 &mut self,
2422 editor: &mut Editor,
2423 element_state: &mut Self::ElementState,
2424 cx: &mut gpui::ViewContext<Editor>,
2425 ) -> gpui::LayoutId {
2426 let rem_size = cx.rem_size();
2427 let mut style = Style::default();
2428 style.size.width = relative(1.).into();
2429 style.size.height = match editor.mode {
2430 EditorMode::SingleLine => self.style.text.line_height_in_pixels(cx.rem_size()).into(),
2431 EditorMode::AutoHeight { .. } => todo!(),
2432 EditorMode::Full => relative(1.).into(),
2433 };
2434 cx.request_layout(&style, None)
2435 }
2436
2437 fn paint(
2438 &mut self,
2439 bounds: Bounds<gpui::Pixels>,
2440 editor: &mut Editor,
2441 element_state: &mut Self::ElementState,
2442 cx: &mut gpui::ViewContext<Editor>,
2443 ) {
2444 let mut layout = self.compute_layout(editor, cx, bounds);
2445 let gutter_bounds = Bounds {
2446 origin: bounds.origin,
2447 size: layout.gutter_size,
2448 };
2449 let text_bounds = Bounds {
2450 origin: gutter_bounds.upper_right(),
2451 size: layout.text_size,
2452 };
2453
2454 let dispatch_context = editor.dispatch_context(cx);
2455 cx.with_key_dispatch(
2456 dispatch_context,
2457 Some(editor.focus_handle.clone()),
2458 |_, cx| {
2459 register_actions(cx);
2460
2461 // We call with_z_index to establish a new stacking context.
2462 cx.with_z_index(0, |cx| {
2463 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2464 self.paint_mouse_listeners(
2465 bounds,
2466 gutter_bounds,
2467 text_bounds,
2468 &layout.position_map,
2469 cx,
2470 );
2471 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2472 if layout.gutter_size.width > Pixels::ZERO {
2473 self.paint_gutter(gutter_bounds, &mut layout, editor, cx);
2474 }
2475 self.paint_text(text_bounds, &mut layout, editor, cx);
2476
2477 if !layout.blocks.is_empty() {
2478 self.paint_blocks(bounds, &mut layout, editor, cx);
2479 }
2480
2481 let input_handler = ElementInputHandler::new(bounds, cx);
2482 cx.handle_input(&editor.focus_handle, input_handler);
2483 });
2484 });
2485 },
2486 )
2487 }
2488}
2489
2490impl Component<Editor> for EditorElement {
2491 fn render(self) -> AnyElement<Editor> {
2492 AnyElement::new(self)
2493 }
2494}
2495
2496// impl EditorElement {
2497// type LayoutState = LayoutState;
2498// type PaintState = ();
2499
2500// fn layout(
2501// &mut self,
2502// constraint: SizeConstraint,
2503// editor: &mut Editor,
2504// cx: &mut ViewContext<Editor>,
2505// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2506// let mut size = constraint.max;
2507// if size.x.is_infinite() {
2508// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2509// }
2510
2511// let snapshot = editor.snapshot(cx);
2512// let style = self.style.clone();
2513
2514// let line_height = (style.text.font_size * style.line_height_scalar).round();
2515
2516// let gutter_padding;
2517// let gutter_width;
2518// let gutter_margin;
2519// if snapshot.show_gutter {
2520// let em_width = style.text.em_width(cx.font_cache());
2521// gutter_padding = (em_width * style.gutter_padding_factor).round();
2522// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2523// gutter_margin = -style.text.descent(cx.font_cache());
2524// } else {
2525// gutter_padding = 0.0;
2526// gutter_width = 0.0;
2527// gutter_margin = 0.0;
2528// };
2529
2530// let text_width = size.x - gutter_width;
2531// let em_width = style.text.em_width(cx.font_cache());
2532// let em_advance = style.text.em_advance(cx.font_cache());
2533// let overscroll = point(em_width, 0.);
2534// let snapshot = {
2535// editor.set_visible_line_count(size.y / line_height, cx);
2536
2537// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2538// let wrap_width = match editor.soft_wrap_mode(cx) {
2539// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2540// SoftWrap::EditorWidth => editor_width,
2541// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2542// };
2543
2544// if editor.set_wrap_width(Some(wrap_width), cx) {
2545// editor.snapshot(cx)
2546// } else {
2547// snapshot
2548// }
2549// };
2550
2551// let wrap_guides = editor
2552// .wrap_guides(cx)
2553// .iter()
2554// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2555// .collect();
2556
2557// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2558// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2559// size.set_y(
2560// scroll_height
2561// .min(constraint.max_along(Axis::Vertical))
2562// .max(constraint.min_along(Axis::Vertical))
2563// .max(line_height)
2564// .min(line_height * max_lines as f32),
2565// )
2566// } else if let EditorMode::SingleLine = snapshot.mode {
2567// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2568// } else if size.y.is_infinite() {
2569// size.set_y(scroll_height);
2570// }
2571// let gutter_size = point(gutter_width, size.y);
2572// let text_size = point(text_width, size.y);
2573
2574// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2575// let mut snapshot = editor.snapshot(cx);
2576
2577// let scroll_position = snapshot.scroll_position();
2578// // The scroll position is a fractional point, the whole number of which represents
2579// // the top of the window in terms of display rows.
2580// let start_row = scroll_position.y as u32;
2581// let height_in_lines = size.y / line_height;
2582// let max_row = snapshot.max_point().row();
2583
2584// // Add 1 to ensure selections bleed off screen
2585// let end_row = 1 + cmp::min(
2586// (scroll_position.y + height_in_lines).ceil() as u32,
2587// max_row,
2588// );
2589
2590// let start_anchor = if start_row == 0 {
2591// Anchor::min()
2592// } else {
2593// snapshot
2594// .buffer_snapshot
2595// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2596// };
2597// let end_anchor = if end_row > max_row {
2598// Anchor::max
2599// } else {
2600// snapshot
2601// .buffer_snapshot
2602// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2603// };
2604
2605// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2606// let mut active_rows = BTreeMap::new();
2607// let mut fold_ranges = Vec::new();
2608// let is_singleton = editor.is_singleton(cx);
2609
2610// let highlighted_rows = editor.highlighted_rows();
2611// let theme = theme::current(cx);
2612// let highlighted_ranges = editor.background_highlights_in_range(
2613// start_anchor..end_anchor,
2614// &snapshot.display_snapshot,
2615// theme.as_ref(),
2616// );
2617
2618// fold_ranges.extend(
2619// snapshot
2620// .folds_in_range(start_anchor..end_anchor)
2621// .map(|anchor| {
2622// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2623// (
2624// start.row,
2625// start.to_display_point(&snapshot.display_snapshot)
2626// ..anchor.end.to_display_point(&snapshot),
2627// )
2628// }),
2629// );
2630
2631// let mut newest_selection_head = None;
2632
2633// if editor.show_local_selections {
2634// let mut local_selections: Vec<Selection<Point>> = editor
2635// .selections
2636// .disjoint_in_range(start_anchor..end_anchor, cx);
2637// local_selections.extend(editor.selections.pending(cx));
2638// let mut layouts = Vec::new();
2639// let newest = editor.selections.newest(cx);
2640// for selection in local_selections.drain(..) {
2641// let is_empty = selection.start == selection.end;
2642// let is_newest = selection == newest;
2643
2644// let layout = SelectionLayout::new(
2645// selection,
2646// editor.selections.line_mode,
2647// editor.cursor_shape,
2648// &snapshot.display_snapshot,
2649// is_newest,
2650// true,
2651// );
2652// if is_newest {
2653// newest_selection_head = Some(layout.head);
2654// }
2655
2656// for row in cmp::max(layout.active_rows.start, start_row)
2657// ..=cmp::min(layout.active_rows.end, end_row)
2658// {
2659// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2660// *contains_non_empty_selection |= !is_empty;
2661// }
2662// layouts.push(layout);
2663// }
2664
2665// selections.push((style.selection, layouts));
2666// }
2667
2668// if let Some(collaboration_hub) = &editor.collaboration_hub {
2669// // When following someone, render the local selections in their color.
2670// if let Some(leader_id) = editor.leader_peer_id {
2671// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2672// if let Some(participant_index) = collaboration_hub
2673// .user_participant_indices(cx)
2674// .get(&collaborator.user_id)
2675// {
2676// if let Some((local_selection_style, _)) = selections.first_mut() {
2677// *local_selection_style =
2678// style.selection_style_for_room_participant(participant_index.0);
2679// }
2680// }
2681// }
2682// }
2683
2684// let mut remote_selections = HashMap::default();
2685// for selection in snapshot.remote_selections_in_range(
2686// &(start_anchor..end_anchor),
2687// collaboration_hub.as_ref(),
2688// cx,
2689// ) {
2690// let selection_style = if let Some(participant_index) = selection.participant_index {
2691// style.selection_style_for_room_participant(participant_index.0)
2692// } else {
2693// style.absent_selection
2694// };
2695
2696// // Don't re-render the leader's selections, since the local selections
2697// // match theirs.
2698// if Some(selection.peer_id) == editor.leader_peer_id {
2699// continue;
2700// }
2701
2702// remote_selections
2703// .entry(selection.replica_id)
2704// .or_insert((selection_style, Vec::new()))
2705// .1
2706// .push(SelectionLayout::new(
2707// selection.selection,
2708// selection.line_mode,
2709// selection.cursor_shape,
2710// &snapshot.display_snapshot,
2711// false,
2712// false,
2713// ));
2714// }
2715
2716// selections.extend(remote_selections.into_values());
2717// }
2718
2719// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2720// let show_scrollbars = match scrollbar_settings.show {
2721// ShowScrollbar::Auto => {
2722// // Git
2723// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2724// ||
2725// // Selections
2726// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2727// // Scrollmanager
2728// || editor.scroll_manager.scrollbars_visible()
2729// }
2730// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2731// ShowScrollbar::Always => true,
2732// ShowScrollbar::Never => false,
2733// };
2734
2735// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2736// .into_iter()
2737// .map(|(id, fold)| {
2738// let color = self
2739// .style
2740// .folds
2741// .ellipses
2742// .background
2743// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2744// .color;
2745
2746// (id, fold, color)
2747// })
2748// .collect();
2749
2750// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2751// let newest = editor.selections.newest::<Point>(cx);
2752// SelectionLayout::new(
2753// newest,
2754// editor.selections.line_mode,
2755// editor.cursor_shape,
2756// &snapshot.display_snapshot,
2757// true,
2758// true,
2759// )
2760// .head
2761// });
2762
2763// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2764// start_row..end_row,
2765// &active_rows,
2766// head_for_relative,
2767// is_singleton,
2768// &snapshot,
2769// cx,
2770// );
2771
2772// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2773
2774// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2775
2776// let mut max_visible_line_width = 0.0;
2777// let line_layouts =
2778// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2779// for line_with_invisibles in &line_layouts {
2780// if line_with_invisibles.line.width() > max_visible_line_width {
2781// max_visible_line_width = line_with_invisibles.line.width();
2782// }
2783// }
2784
2785// let style = self.style.clone();
2786// let longest_line_width = layout_line(
2787// snapshot.longest_row(),
2788// &snapshot,
2789// &style,
2790// cx.text_layout_cache(),
2791// )
2792// .width();
2793// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2794// let em_width = style.text.em_width(cx.font_cache());
2795// let (scroll_width, blocks) = self.layout_blocks(
2796// start_row..end_row,
2797// &snapshot,
2798// size.x,
2799// scroll_width,
2800// gutter_padding,
2801// gutter_width,
2802// em_width,
2803// gutter_width + gutter_margin,
2804// line_height,
2805// &style,
2806// &line_layouts,
2807// editor,
2808// cx,
2809// );
2810
2811// let scroll_max = point(
2812// ((scroll_width - text_size.x) / em_width).max(0.0),
2813// max_row as f32,
2814// );
2815
2816// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2817
2818// let autoscrolled = if autoscroll_horizontally {
2819// editor.autoscroll_horizontally(
2820// start_row,
2821// text_size.x,
2822// scroll_width,
2823// em_width,
2824// &line_layouts,
2825// cx,
2826// )
2827// } else {
2828// false
2829// };
2830
2831// if clamped || autoscrolled {
2832// snapshot = editor.snapshot(cx);
2833// }
2834
2835// let style = editor.style(cx);
2836
2837// let mut context_menu = None;
2838// let mut code_actions_indicator = None;
2839// if let Some(newest_selection_head) = newest_selection_head {
2840// if (start_row..end_row).contains(&newest_selection_head.row()) {
2841// if editor.context_menu_visible() {
2842// context_menu =
2843// editor.render_context_menu(newest_selection_head, style.clone(), cx);
2844// }
2845
2846// let active = matches!(
2847// editor.context_menu.read().as_ref(),
2848// Some(crate::ContextMenu::CodeActions(_))
2849// );
2850
2851// code_actions_indicator = editor
2852// .render_code_actions_indicator(&style, active, cx)
2853// .map(|indicator| (newest_selection_head.row(), indicator));
2854// }
2855// }
2856
2857// let visible_rows = start_row..start_row + line_layouts.len() as u32;
2858// let mut hover = editor.hover_state.render(
2859// &snapshot,
2860// &style,
2861// visible_rows,
2862// editor.workspace.as_ref().map(|(w, _)| w.clone()),
2863// cx,
2864// );
2865// let mode = editor.mode;
2866
2867// let mut fold_indicators = editor.render_fold_indicators(
2868// fold_statuses,
2869// &style,
2870// editor.gutter_hovered,
2871// line_height,
2872// gutter_margin,
2873// cx,
2874// );
2875
2876// if let Some((_, context_menu)) = context_menu.as_mut() {
2877// context_menu.layout(
2878// SizeConstraint {
2879// min: gpui::Point::<Pixels>::zero(),
2880// max: point(
2881// cx.window_size().x * 0.7,
2882// (12. * line_height).min((size.y - line_height) / 2.),
2883// ),
2884// },
2885// editor,
2886// cx,
2887// );
2888// }
2889
2890// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
2891// indicator.layout(
2892// SizeConstraint::strict_along(
2893// Axis::Vertical,
2894// line_height * style.code_actions.vertical_scale,
2895// ),
2896// editor,
2897// cx,
2898// );
2899// }
2900
2901// for fold_indicator in fold_indicators.iter_mut() {
2902// if let Some(indicator) = fold_indicator.as_mut() {
2903// indicator.layout(
2904// SizeConstraint::strict_along(
2905// Axis::Vertical,
2906// line_height * style.code_actions.vertical_scale,
2907// ),
2908// editor,
2909// cx,
2910// );
2911// }
2912// }
2913
2914// if let Some((_, hover_popovers)) = hover.as_mut() {
2915// for hover_popover in hover_popovers.iter_mut() {
2916// hover_popover.layout(
2917// SizeConstraint {
2918// min: gpui::Point::<Pixels>::zero(),
2919// max: point(
2920// (120. * em_width) // Default size
2921// .min(size.x / 2.) // Shrink to half of the editor width
2922// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2923// (16. * line_height) // Default size
2924// .min(size.y / 2.) // Shrink to half of the editor height
2925// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2926// ),
2927// },
2928// editor,
2929// cx,
2930// );
2931// }
2932// }
2933
2934// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
2935// let invisible_symbol_style = RunStyle {
2936// color: self.style.whitespace,
2937// font_id: self.style.text.font_id,
2938// underline: Default::default(),
2939// };
2940
2941// (
2942// size,
2943// LayoutState {
2944// mode,
2945// position_map: Arc::new(PositionMap {
2946// size,
2947// scroll_max,
2948// line_layouts,
2949// line_height,
2950// em_width,
2951// em_advance,
2952// snapshot,
2953// }),
2954// visible_display_row_range: start_row..end_row,
2955// wrap_guides,
2956// gutter_size,
2957// gutter_padding,
2958// text_size,
2959// scrollbar_row_range,
2960// show_scrollbars,
2961// is_singleton,
2962// max_row,
2963// gutter_margin,
2964// active_rows,
2965// highlighted_rows,
2966// highlighted_ranges,
2967// fold_ranges,
2968// line_number_layouts,
2969// display_hunks,
2970// blocks,
2971// selections,
2972// context_menu,
2973// code_actions_indicator,
2974// fold_indicators,
2975// tab_invisible: cx.text_layout_cache().layout_str(
2976// "→",
2977// invisible_symbol_font_size,
2978// &[("→".len(), invisible_symbol_style)],
2979// ),
2980// space_invisible: cx.text_layout_cache().layout_str(
2981// "•",
2982// invisible_symbol_font_size,
2983// &[("•".len(), invisible_symbol_style)],
2984// ),
2985// hover_popovers: hover,
2986// },
2987// )
2988// }
2989
2990// fn paint(
2991// &mut self,
2992// bounds: Bounds<Pixels>,
2993// visible_bounds: Bounds<Pixels>,
2994// layout: &mut Self::LayoutState,
2995// editor: &mut Editor,
2996// cx: &mut ViewContext<Editor>,
2997// ) -> Self::PaintState {
2998// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
2999// cx.scene().push_layer(Some(visible_bounds));
3000
3001// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
3002// let text_bounds = Bounds::<Pixels>::new(
3003// bounds.origin + point(layout.gutter_size.x, 0.0),
3004// layout.text_size,
3005// );
3006
3007// Self::attach_mouse_handlers(
3008// &layout.position_map,
3009// layout.hover_popovers.is_some(),
3010// visible_bounds,
3011// text_bounds,
3012// gutter_bounds,
3013// bounds,
3014// cx,
3015// );
3016
3017// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3018// if layout.gutter_size.x > 0. {
3019// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3020// }
3021// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3022
3023// cx.scene().push_layer(Some(bounds));
3024// if !layout.blocks.is_empty {
3025// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3026// }
3027// self.paint_scrollbar(bounds, layout, &editor, cx);
3028// cx.scene().pop_layer();
3029// cx.scene().pop_layer();
3030// }
3031
3032// fn rect_for_text_range(
3033// &self,
3034// range_utf16: Range<usize>,
3035// bounds: Bounds<Pixels>,
3036// _: Bounds<Pixels>,
3037// layout: &Self::LayoutState,
3038// _: &Self::PaintState,
3039// _: &Editor,
3040// _: &ViewContext<Editor>,
3041// ) -> Option<Bounds<Pixels>> {
3042// let text_bounds = Bounds::<Pixels>::new(
3043// bounds.origin + point(layout.gutter_size.x, 0.0),
3044// layout.text_size,
3045// );
3046// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3047// let scroll_position = layout.position_map.snapshot.scroll_position();
3048// let start_row = scroll_position.y as u32;
3049// let scroll_top = scroll_position.y * layout.position_map.line_height;
3050// let scroll_left = scroll_position.x * layout.position_map.em_width;
3051
3052// let range_start = OffsetUtf16(range_utf16.start)
3053// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3054// if range_start.row() < start_row {
3055// return None;
3056// }
3057
3058// let line = &layout
3059// .position_map
3060// .line_layouts
3061// .get((range_start.row() - start_row) as usize)?
3062// .line;
3063// let range_start_x = line.x_for_index(range_start.column() as usize);
3064// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3065// Some(Bounds::<Pixels>::new(
3066// content_origin
3067// + point(
3068// range_start_x,
3069// range_start_y + layout.position_map.line_height,
3070// )
3071// - point(scroll_left, scroll_top),
3072// point(
3073// layout.position_map.em_width,
3074// layout.position_map.line_height,
3075// ),
3076// ))
3077// }
3078
3079// fn debug(
3080// &self,
3081// bounds: Bounds<Pixels>,
3082// _: &Self::LayoutState,
3083// _: &Self::PaintState,
3084// _: &Editor,
3085// _: &ViewContext<Editor>,
3086// ) -> json::Value {
3087// json!({
3088// "type": "BufferElement",
3089// "bounds": bounds.to_json()
3090// })
3091// }
3092// }
3093
3094type BufferRow = u32;
3095
3096pub struct LayoutState {
3097 position_map: Arc<PositionMap>,
3098 gutter_size: Size<Pixels>,
3099 gutter_padding: Pixels,
3100 gutter_margin: Pixels,
3101 text_size: gpui::Size<Pixels>,
3102 mode: EditorMode,
3103 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3104 visible_display_row_range: Range<u32>,
3105 active_rows: BTreeMap<u32, bool>,
3106 highlighted_rows: Option<Range<u32>>,
3107 line_number_layouts: Vec<Option<gpui::Line>>,
3108 display_hunks: Vec<DisplayDiffHunk>,
3109 blocks: Vec<BlockLayout>,
3110 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3111 fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)>,
3112 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3113 scrollbar_row_range: Range<f32>,
3114 show_scrollbars: bool,
3115 is_singleton: bool,
3116 max_row: u32,
3117 context_menu: Option<(DisplayPoint, AnyElement<Editor>)>,
3118 code_actions_indicator: Option<CodeActionsIndicator>,
3119 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement<Editor>>)>,
3120 // fold_indicators: Vec<Option<AnyElement<Editor>>>,
3121 tab_invisible: Line,
3122 space_invisible: Line,
3123}
3124
3125struct CodeActionsIndicator {
3126 row: u32,
3127 element: AnyElement<Editor>,
3128}
3129
3130struct PositionMap {
3131 size: Size<Pixels>,
3132 line_height: Pixels,
3133 scroll_max: gpui::Point<f32>,
3134 em_width: Pixels,
3135 em_advance: Pixels,
3136 line_layouts: Vec<LineWithInvisibles>,
3137 snapshot: EditorSnapshot,
3138}
3139
3140#[derive(Debug, Copy, Clone)]
3141pub struct PointForPosition {
3142 pub previous_valid: DisplayPoint,
3143 pub next_valid: DisplayPoint,
3144 pub exact_unclipped: DisplayPoint,
3145 pub column_overshoot_after_line_end: u32,
3146}
3147
3148impl PointForPosition {
3149 #[cfg(test)]
3150 pub fn valid(valid: DisplayPoint) -> Self {
3151 Self {
3152 previous_valid: valid,
3153 next_valid: valid,
3154 exact_unclipped: valid,
3155 column_overshoot_after_line_end: 0,
3156 }
3157 }
3158
3159 pub fn as_valid(&self) -> Option<DisplayPoint> {
3160 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3161 Some(self.previous_valid)
3162 } else {
3163 None
3164 }
3165 }
3166}
3167
3168impl PositionMap {
3169 fn point_for_position(
3170 &self,
3171 text_bounds: Bounds<Pixels>,
3172 position: gpui::Point<Pixels>,
3173 ) -> PointForPosition {
3174 let scroll_position = self.snapshot.scroll_position();
3175 let position = position - text_bounds.origin;
3176 let y = position.y.max(px(0.)).min(self.size.width);
3177 let x = position.x + (scroll_position.x * self.em_width);
3178 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3179
3180 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3181 .line_layouts
3182 .get(row as usize - scroll_position.y as usize)
3183 .map(|&LineWithInvisibles { ref line, .. }| line)
3184 {
3185 if let Some(ix) = line.index_for_x(x) {
3186 (ix as u32, px(0.))
3187 } else {
3188 (line.len as u32, px(0.).max(x - line.width))
3189 }
3190 } else {
3191 (0, x)
3192 };
3193
3194 let mut exact_unclipped = DisplayPoint::new(row, column);
3195 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3196 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3197
3198 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3199 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3200 PointForPosition {
3201 previous_valid,
3202 next_valid,
3203 exact_unclipped,
3204 column_overshoot_after_line_end,
3205 }
3206 }
3207}
3208
3209struct BlockLayout {
3210 row: u32,
3211 element: AnyElement<Editor>,
3212 available_space: Size<AvailableSpace>,
3213 style: BlockStyle,
3214}
3215
3216fn layout_line(
3217 row: u32,
3218 snapshot: &EditorSnapshot,
3219 style: &EditorStyle,
3220 cx: &WindowContext,
3221) -> Result<Line> {
3222 let mut line = snapshot.line(row);
3223
3224 if line.len() > MAX_LINE_LEN {
3225 let mut len = MAX_LINE_LEN;
3226 while !line.is_char_boundary(len) {
3227 len -= 1;
3228 }
3229
3230 line.truncate(len);
3231 }
3232
3233 Ok(cx
3234 .text_system()
3235 .layout_text(
3236 &line,
3237 style.text.font_size.to_pixels(cx.rem_size()),
3238 &[TextRun {
3239 len: snapshot.line_len(row) as usize,
3240 font: style.text.font(),
3241 color: Hsla::default(),
3242 underline: None,
3243 }],
3244 None,
3245 )?
3246 .pop()
3247 .unwrap())
3248}
3249
3250#[derive(Debug)]
3251pub struct Cursor {
3252 origin: gpui::Point<Pixels>,
3253 block_width: Pixels,
3254 line_height: Pixels,
3255 color: Hsla,
3256 shape: CursorShape,
3257 block_text: Option<Line>,
3258}
3259
3260impl Cursor {
3261 pub fn new(
3262 origin: gpui::Point<Pixels>,
3263 block_width: Pixels,
3264 line_height: Pixels,
3265 color: Hsla,
3266 shape: CursorShape,
3267 block_text: Option<Line>,
3268 ) -> Cursor {
3269 Cursor {
3270 origin,
3271 block_width,
3272 line_height,
3273 color,
3274 shape,
3275 block_text,
3276 }
3277 }
3278
3279 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3280 Bounds {
3281 origin: self.origin + origin,
3282 size: size(self.block_width, self.line_height),
3283 }
3284 }
3285
3286 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3287 let bounds = match self.shape {
3288 CursorShape::Bar => Bounds {
3289 origin: self.origin + origin,
3290 size: size(px(2.0), self.line_height),
3291 },
3292 CursorShape::Block | CursorShape::Hollow => Bounds {
3293 origin: self.origin + origin,
3294 size: size(self.block_width, self.line_height),
3295 },
3296 CursorShape::Underscore => Bounds {
3297 origin: self.origin
3298 + origin
3299 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3300 size: size(self.block_width, px(2.0)),
3301 },
3302 };
3303
3304 //Draw background or border quad
3305 if matches!(self.shape, CursorShape::Hollow) {
3306 cx.paint_quad(
3307 bounds,
3308 Corners::default(),
3309 transparent_black(),
3310 Edges::all(px(1.)),
3311 self.color,
3312 );
3313 } else {
3314 cx.paint_quad(
3315 bounds,
3316 Corners::default(),
3317 self.color,
3318 Edges::default(),
3319 transparent_black(),
3320 );
3321 }
3322
3323 if let Some(block_text) = &self.block_text {
3324 block_text.paint(self.origin + origin, self.line_height, cx);
3325 }
3326 }
3327
3328 pub fn shape(&self) -> CursorShape {
3329 self.shape
3330 }
3331}
3332
3333#[derive(Debug)]
3334pub struct HighlightedRange {
3335 pub start_y: Pixels,
3336 pub line_height: Pixels,
3337 pub lines: Vec<HighlightedRangeLine>,
3338 pub color: Hsla,
3339 pub corner_radius: Pixels,
3340}
3341
3342#[derive(Debug)]
3343pub struct HighlightedRangeLine {
3344 pub start_x: Pixels,
3345 pub end_x: Pixels,
3346}
3347
3348impl HighlightedRange {
3349 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3350 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3351 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3352 self.paint_lines(
3353 self.start_y + self.line_height,
3354 &self.lines[1..],
3355 bounds,
3356 cx,
3357 );
3358 } else {
3359 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3360 }
3361 }
3362
3363 fn paint_lines(
3364 &self,
3365 start_y: Pixels,
3366 lines: &[HighlightedRangeLine],
3367 bounds: Bounds<Pixels>,
3368 cx: &mut WindowContext,
3369 ) {
3370 if lines.is_empty() {
3371 return;
3372 }
3373
3374 let first_line = lines.first().unwrap();
3375 let last_line = lines.last().unwrap();
3376
3377 let first_top_left = point(first_line.start_x, start_y);
3378 let first_top_right = point(first_line.end_x, start_y);
3379
3380 let curve_height = point(Pixels::ZERO, self.corner_radius);
3381 let curve_width = |start_x: Pixels, end_x: Pixels| {
3382 let max = (end_x - start_x) / 2.;
3383 let width = if max < self.corner_radius {
3384 max
3385 } else {
3386 self.corner_radius
3387 };
3388
3389 point(width, Pixels::ZERO)
3390 };
3391
3392 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3393 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3394 path.curve_to(first_top_right + curve_height, first_top_right);
3395
3396 let mut iter = lines.iter().enumerate().peekable();
3397 while let Some((ix, line)) = iter.next() {
3398 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3399
3400 if let Some((_, next_line)) = iter.peek() {
3401 let next_top_right = point(next_line.end_x, bottom_right.y);
3402
3403 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3404 Ordering::Equal => {
3405 path.line_to(bottom_right);
3406 }
3407 Ordering::Less => {
3408 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3409 path.line_to(bottom_right - curve_height);
3410 if self.corner_radius > Pixels::ZERO {
3411 path.curve_to(bottom_right - curve_width, bottom_right);
3412 }
3413 path.line_to(next_top_right + curve_width);
3414 if self.corner_radius > Pixels::ZERO {
3415 path.curve_to(next_top_right + curve_height, next_top_right);
3416 }
3417 }
3418 Ordering::Greater => {
3419 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3420 path.line_to(bottom_right - curve_height);
3421 if self.corner_radius > Pixels::ZERO {
3422 path.curve_to(bottom_right + curve_width, bottom_right);
3423 }
3424 path.line_to(next_top_right - curve_width);
3425 if self.corner_radius > Pixels::ZERO {
3426 path.curve_to(next_top_right + curve_height, next_top_right);
3427 }
3428 }
3429 }
3430 } else {
3431 let curve_width = curve_width(line.start_x, line.end_x);
3432 path.line_to(bottom_right - curve_height);
3433 if self.corner_radius > Pixels::ZERO {
3434 path.curve_to(bottom_right - curve_width, bottom_right);
3435 }
3436
3437 let bottom_left = point(line.start_x, bottom_right.y);
3438 path.line_to(bottom_left + curve_width);
3439 if self.corner_radius > Pixels::ZERO {
3440 path.curve_to(bottom_left - curve_height, bottom_left);
3441 }
3442 }
3443 }
3444
3445 if first_line.start_x > last_line.start_x {
3446 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3447 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3448 path.line_to(second_top_left + curve_height);
3449 if self.corner_radius > Pixels::ZERO {
3450 path.curve_to(second_top_left + curve_width, second_top_left);
3451 }
3452 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3453 path.line_to(first_bottom_left - curve_width);
3454 if self.corner_radius > Pixels::ZERO {
3455 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3456 }
3457 }
3458
3459 path.line_to(first_top_left + curve_height);
3460 if self.corner_radius > Pixels::ZERO {
3461 path.curve_to(first_top_left + top_curve_width, first_top_left);
3462 }
3463 path.line_to(first_top_right - top_curve_width);
3464
3465 cx.paint_path(path, self.color);
3466 }
3467}
3468
3469// fn range_to_bounds(
3470// range: &Range<DisplayPoint>,
3471// content_origin: gpui::Point<Pixels>,
3472// scroll_left: f32,
3473// scroll_top: f32,
3474// visible_row_range: &Range<u32>,
3475// line_end_overshoot: f32,
3476// position_map: &PositionMap,
3477// ) -> impl Iterator<Item = Bounds<Pixels>> {
3478// let mut bounds: SmallVec<[Bounds<Pixels>; 1]> = SmallVec::new();
3479
3480// if range.start == range.end {
3481// return bounds.into_iter();
3482// }
3483
3484// let start_row = visible_row_range.start;
3485// let end_row = visible_row_range.end;
3486
3487// let row_range = if range.end.column() == 0 {
3488// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3489// } else {
3490// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
3491// };
3492
3493// let first_y =
3494// content_origin.y + row_range.start as f32 * position_map.line_height - scroll_top;
3495
3496// for (idx, row) in row_range.enumerate() {
3497// let line_layout = &position_map.line_layouts[(row - start_row) as usize].line;
3498
3499// let start_x = if row == range.start.row() {
3500// content_origin.x + line_layout.x_for_index(range.start.column() as usize)
3501// - scroll_left
3502// } else {
3503// content_origin.x - scroll_left
3504// };
3505
3506// let end_x = if row == range.end.row() {
3507// content_origin.x + line_layout.x_for_index(range.end.column() as usize) - scroll_left
3508// } else {
3509// content_origin.x + line_layout.width() + line_end_overshoot - scroll_left
3510// };
3511
3512// bounds.push(Bounds::<Pixels>::from_points(
3513// point(start_x, first_y + position_map.line_height * idx as f32),
3514// point(end_x, first_y + position_map.line_height * (idx + 1) as f32),
3515// ))
3516// }
3517
3518// bounds.into_iter()
3519// }
3520
3521pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3522 (delta.pow(1.5) / 100.0).into()
3523}
3524
3525fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3526 (delta.pow(1.2) / 300.0).into()
3527}
3528
3529// #[cfg(test)]
3530// mod tests {
3531// use super::*;
3532// use crate::{
3533// display_map::{BlockDisposition, BlockProperties},
3534// editor_tests::{init_test, update_test_language_settings},
3535// Editor, MultiBuffer,
3536// };
3537// use gpui::TestAppContext;
3538// use language::language_settings;
3539// use log::info;
3540// use std::{num::NonZeroU32, sync::Arc};
3541// use util::test::sample_text;
3542
3543// #[gpui::test]
3544// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3545// init_test(cx, |_| {});
3546// let editor = cx
3547// .add_window(|cx| {
3548// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3549// Editor::new(EditorMode::Full, buffer, None, None, cx)
3550// })
3551// .root(cx);
3552// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3553
3554// let layouts = editor.update(cx, |editor, cx| {
3555// let snapshot = editor.snapshot(cx);
3556// element
3557// .layout_line_numbers(
3558// 0..6,
3559// &Default::default(),
3560// DisplayPoint::new(0, 0),
3561// false,
3562// &snapshot,
3563// cx,
3564// )
3565// .0
3566// });
3567// assert_eq!(layouts.len(), 6);
3568
3569// let relative_rows = editor.update(cx, |editor, cx| {
3570// let snapshot = editor.snapshot(cx);
3571// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3572// });
3573// assert_eq!(relative_rows[&0], 3);
3574// assert_eq!(relative_rows[&1], 2);
3575// assert_eq!(relative_rows[&2], 1);
3576// // current line has no relative number
3577// assert_eq!(relative_rows[&4], 1);
3578// assert_eq!(relative_rows[&5], 2);
3579
3580// // works if cursor is before screen
3581// let relative_rows = editor.update(cx, |editor, cx| {
3582// let snapshot = editor.snapshot(cx);
3583
3584// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3585// });
3586// assert_eq!(relative_rows.len(), 3);
3587// assert_eq!(relative_rows[&3], 2);
3588// assert_eq!(relative_rows[&4], 3);
3589// assert_eq!(relative_rows[&5], 4);
3590
3591// // works if cursor is after screen
3592// let relative_rows = editor.update(cx, |editor, cx| {
3593// let snapshot = editor.snapshot(cx);
3594
3595// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3596// });
3597// assert_eq!(relative_rows.len(), 3);
3598// assert_eq!(relative_rows[&0], 5);
3599// assert_eq!(relative_rows[&1], 4);
3600// assert_eq!(relative_rows[&2], 3);
3601// }
3602
3603// #[gpui::test]
3604// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3605// init_test(cx, |_| {});
3606
3607// let editor = cx
3608// .add_window(|cx| {
3609// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3610// Editor::new(EditorMode::Full, buffer, None, None, cx)
3611// })
3612// .root(cx);
3613// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3614// let (_, state) = editor.update(cx, |editor, cx| {
3615// editor.cursor_shape = CursorShape::Block;
3616// editor.change_selections(None, cx, |s| {
3617// s.select_ranges([
3618// Point::new(0, 0)..Point::new(1, 0),
3619// Point::new(3, 2)..Point::new(3, 3),
3620// Point::new(5, 6)..Point::new(6, 0),
3621// ]);
3622// });
3623// element.layout(
3624// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3625// editor,
3626// cx,
3627// )
3628// });
3629// assert_eq!(state.selections.len(), 1);
3630// let local_selections = &state.selections[0].1;
3631// assert_eq!(local_selections.len(), 3);
3632// // moves cursor back one line
3633// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3634// assert_eq!(
3635// local_selections[0].range,
3636// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3637// );
3638
3639// // moves cursor back one column
3640// assert_eq!(
3641// local_selections[1].range,
3642// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3643// );
3644// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3645
3646// // leaves cursor on the max point
3647// assert_eq!(
3648// local_selections[2].range,
3649// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3650// );
3651// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3652
3653// // active lines does not include 1 (even though the range of the selection does)
3654// assert_eq!(
3655// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3656// vec![0, 3, 5, 6]
3657// );
3658
3659// // multi-buffer support
3660// // in DisplayPoint co-ordinates, this is what we're dealing with:
3661// // 0: [[file
3662// // 1: header]]
3663// // 2: aaaaaa
3664// // 3: bbbbbb
3665// // 4: cccccc
3666// // 5:
3667// // 6: ...
3668// // 7: ffffff
3669// // 8: gggggg
3670// // 9: hhhhhh
3671// // 10:
3672// // 11: [[file
3673// // 12: header]]
3674// // 13: bbbbbb
3675// // 14: cccccc
3676// // 15: dddddd
3677// let editor = cx
3678// .add_window(|cx| {
3679// let buffer = MultiBuffer::build_multi(
3680// [
3681// (
3682// &(sample_text(8, 6, 'a') + "\n"),
3683// vec![
3684// Point::new(0, 0)..Point::new(3, 0),
3685// Point::new(4, 0)..Point::new(7, 0),
3686// ],
3687// ),
3688// (
3689// &(sample_text(8, 6, 'a') + "\n"),
3690// vec![Point::new(1, 0)..Point::new(3, 0)],
3691// ),
3692// ],
3693// cx,
3694// );
3695// Editor::new(EditorMode::Full, buffer, None, None, cx)
3696// })
3697// .root(cx);
3698// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3699// let (_, state) = editor.update(cx, |editor, cx| {
3700// editor.cursor_shape = CursorShape::Block;
3701// editor.change_selections(None, cx, |s| {
3702// s.select_display_ranges([
3703// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3704// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3705// ]);
3706// });
3707// element.layout(
3708// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3709// editor,
3710// cx,
3711// )
3712// });
3713
3714// assert_eq!(state.selections.len(), 1);
3715// let local_selections = &state.selections[0].1;
3716// assert_eq!(local_selections.len(), 2);
3717
3718// // moves cursor on excerpt boundary back a line
3719// // and doesn't allow selection to bleed through
3720// assert_eq!(
3721// local_selections[0].range,
3722// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3723// );
3724// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3725
3726// // moves cursor on buffer boundary back two lines
3727// // and doesn't allow selection to bleed through
3728// assert_eq!(
3729// local_selections[1].range,
3730// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3731// );
3732// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3733// }
3734
3735// #[gpui::test]
3736// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3737// init_test(cx, |_| {});
3738
3739// let editor = cx
3740// .add_window(|cx| {
3741// let buffer = MultiBuffer::build_simple("", cx);
3742// Editor::new(EditorMode::Full, buffer, None, None, cx)
3743// })
3744// .root(cx);
3745
3746// editor.update(cx, |editor, cx| {
3747// editor.set_placeholder_text("hello", cx);
3748// editor.insert_blocks(
3749// [BlockProperties {
3750// style: BlockStyle::Fixed,
3751// disposition: BlockDisposition::Above,
3752// height: 3,
3753// position: Anchor::min(),
3754// render: Arc::new(|_| Empty::new().into_any),
3755// }],
3756// None,
3757// cx,
3758// );
3759
3760// // Blur the editor so that it displays placeholder text.
3761// cx.blur();
3762// });
3763
3764// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3765// let (size, mut state) = editor.update(cx, |editor, cx| {
3766// element.layout(
3767// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3768// editor,
3769// cx,
3770// )
3771// });
3772
3773// assert_eq!(state.position_map.line_layouts.len(), 4);
3774// assert_eq!(
3775// state
3776// .line_number_layouts
3777// .iter()
3778// .map(Option::is_some)
3779// .collect::<Vec<_>>(),
3780// &[false, false, false, true]
3781// );
3782
3783// // Don't panic.
3784// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3785// editor.update(cx, |editor, cx| {
3786// element.paint(bounds, bounds, &mut state, editor, cx);
3787// });
3788// }
3789
3790// #[gpui::test]
3791// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3792// const TAB_SIZE: u32 = 4;
3793
3794// let input_text = "\t \t|\t| a b";
3795// let expected_invisibles = vec![
3796// Invisible::Tab {
3797// line_start_offset: 0,
3798// },
3799// Invisible::Whitespace {
3800// line_offset: TAB_SIZE as usize,
3801// },
3802// Invisible::Tab {
3803// line_start_offset: TAB_SIZE as usize + 1,
3804// },
3805// Invisible::Tab {
3806// line_start_offset: TAB_SIZE as usize * 2 + 1,
3807// },
3808// Invisible::Whitespace {
3809// line_offset: TAB_SIZE as usize * 3 + 1,
3810// },
3811// Invisible::Whitespace {
3812// line_offset: TAB_SIZE as usize * 3 + 3,
3813// },
3814// ];
3815// assert_eq!(
3816// expected_invisibles.len(),
3817// input_text
3818// .chars()
3819// .filter(|initial_char| initial_char.is_whitespace())
3820// .count(),
3821// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3822// );
3823
3824// init_test(cx, |s| {
3825// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3826// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3827// });
3828
3829// let actual_invisibles =
3830// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3831
3832// assert_eq!(expected_invisibles, actual_invisibles);
3833// }
3834
3835// #[gpui::test]
3836// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3837// init_test(cx, |s| {
3838// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3839// s.defaults.tab_size = NonZeroU32::new(4);
3840// });
3841
3842// for editor_mode_without_invisibles in [
3843// EditorMode::SingleLine,
3844// EditorMode::AutoHeight { max_lines: 100 },
3845// ] {
3846// let invisibles = collect_invisibles_from_new_editor(
3847// cx,
3848// editor_mode_without_invisibles,
3849// "\t\t\t| | a b",
3850// 500.0,
3851// );
3852// assert!(invisibles.is_empty,
3853// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3854// }
3855// }
3856
3857// #[gpui::test]
3858// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3859// let tab_size = 4;
3860// let input_text = "a\tbcd ".repeat(9);
3861// let repeated_invisibles = [
3862// Invisible::Tab {
3863// line_start_offset: 1,
3864// },
3865// Invisible::Whitespace {
3866// line_offset: tab_size as usize + 3,
3867// },
3868// Invisible::Whitespace {
3869// line_offset: tab_size as usize + 4,
3870// },
3871// Invisible::Whitespace {
3872// line_offset: tab_size as usize + 5,
3873// },
3874// ];
3875// let expected_invisibles = std::iter::once(repeated_invisibles)
3876// .cycle()
3877// .take(9)
3878// .flatten()
3879// .collect::<Vec<_>>();
3880// assert_eq!(
3881// expected_invisibles.len(),
3882// input_text
3883// .chars()
3884// .filter(|initial_char| initial_char.is_whitespace())
3885// .count(),
3886// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3887// );
3888// info!("Expected invisibles: {expected_invisibles:?}");
3889
3890// init_test(cx, |_| {});
3891
3892// // Put the same string with repeating whitespace pattern into editors of various size,
3893// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3894// let resize_step = 10.0;
3895// let mut editor_width = 200.0;
3896// while editor_width <= 1000.0 {
3897// update_test_language_settings(cx, |s| {
3898// s.defaults.tab_size = NonZeroU32::new(tab_size);
3899// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3900// s.defaults.preferred_line_length = Some(editor_width as u32);
3901// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3902// });
3903
3904// let actual_invisibles =
3905// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
3906
3907// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3908// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3909// let mut i = 0;
3910// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3911// i = actual_index;
3912// match expected_invisibles.get(i) {
3913// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3914// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3915// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3916// _ => {
3917// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3918// }
3919// },
3920// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3921// }
3922// }
3923// let missing_expected_invisibles = &expected_invisibles[i + 1..];
3924// assert!(
3925// missing_expected_invisibles.is_empty,
3926// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3927// );
3928
3929// editor_width += resize_step;
3930// }
3931// }
3932
3933// fn collect_invisibles_from_new_editor(
3934// cx: &mut TestAppContext,
3935// editor_mode: EditorMode,
3936// input_text: &str,
3937// editor_width: f32,
3938// ) -> Vec<Invisible> {
3939// info!(
3940// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
3941// );
3942// let editor = cx
3943// .add_window(|cx| {
3944// let buffer = MultiBuffer::build_simple(&input_text, cx);
3945// Editor::new(editor_mode, buffer, None, None, cx)
3946// })
3947// .root(cx);
3948
3949// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3950// let (_, layout_state) = editor.update(cx, |editor, cx| {
3951// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3952// editor.set_wrap_width(Some(editor_width), cx);
3953
3954// element.layout(
3955// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
3956// editor,
3957// cx,
3958// )
3959// });
3960
3961// layout_state
3962// .position_map
3963// .line_layouts
3964// .iter()
3965// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3966// .flatten()
3967// .cloned()
3968// .collect()
3969// }
3970// }
3971
3972fn register_actions(cx: &mut ViewContext<Editor>) {
3973 register_action(cx, Editor::move_left);
3974 register_action(cx, Editor::move_right);
3975 register_action(cx, Editor::move_down);
3976 register_action(cx, Editor::move_up);
3977 // on_action(cx, Editor::new_file); todo!()
3978 // on_action(cx, Editor::new_file_in_direction); todo!()
3979 register_action(cx, Editor::cancel);
3980 register_action(cx, Editor::newline);
3981 register_action(cx, Editor::newline_above);
3982 register_action(cx, Editor::newline_below);
3983 register_action(cx, Editor::backspace);
3984 register_action(cx, Editor::delete);
3985 register_action(cx, Editor::tab);
3986 register_action(cx, Editor::tab_prev);
3987 register_action(cx, Editor::indent);
3988 register_action(cx, Editor::outdent);
3989 register_action(cx, Editor::delete_line);
3990 register_action(cx, Editor::join_lines);
3991 register_action(cx, Editor::sort_lines_case_sensitive);
3992 register_action(cx, Editor::sort_lines_case_insensitive);
3993 register_action(cx, Editor::reverse_lines);
3994 register_action(cx, Editor::shuffle_lines);
3995 register_action(cx, Editor::convert_to_upper_case);
3996 register_action(cx, Editor::convert_to_lower_case);
3997 register_action(cx, Editor::convert_to_title_case);
3998 register_action(cx, Editor::convert_to_snake_case);
3999 register_action(cx, Editor::convert_to_kebab_case);
4000 register_action(cx, Editor::convert_to_upper_camel_case);
4001 register_action(cx, Editor::convert_to_lower_camel_case);
4002 register_action(cx, Editor::delete_to_previous_word_start);
4003 register_action(cx, Editor::delete_to_previous_subword_start);
4004 register_action(cx, Editor::delete_to_next_word_end);
4005 register_action(cx, Editor::delete_to_next_subword_end);
4006 register_action(cx, Editor::delete_to_beginning_of_line);
4007 register_action(cx, Editor::delete_to_end_of_line);
4008 register_action(cx, Editor::cut_to_end_of_line);
4009 register_action(cx, Editor::duplicate_line);
4010 register_action(cx, Editor::move_line_up);
4011 register_action(cx, Editor::move_line_down);
4012 register_action(cx, Editor::transpose);
4013 register_action(cx, Editor::cut);
4014 register_action(cx, Editor::copy);
4015 register_action(cx, Editor::paste);
4016 register_action(cx, Editor::undo);
4017 register_action(cx, Editor::redo);
4018 register_action(cx, Editor::move_page_up);
4019 register_action(cx, Editor::move_page_down);
4020 register_action(cx, Editor::next_screen);
4021 register_action(cx, Editor::scroll_cursor_top);
4022 register_action(cx, Editor::scroll_cursor_center);
4023 register_action(cx, Editor::scroll_cursor_bottom);
4024 register_action(cx, |editor, _: &LineDown, cx| {
4025 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
4026 });
4027 register_action(cx, |editor, _: &LineUp, cx| {
4028 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
4029 });
4030 register_action(cx, |editor, _: &HalfPageDown, cx| {
4031 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
4032 });
4033 register_action(cx, |editor, _: &HalfPageUp, cx| {
4034 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
4035 });
4036 register_action(cx, |editor, _: &PageDown, cx| {
4037 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
4038 });
4039 register_action(cx, |editor, _: &PageUp, cx| {
4040 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
4041 });
4042 register_action(cx, Editor::move_to_previous_word_start);
4043 register_action(cx, Editor::move_to_previous_subword_start);
4044 register_action(cx, Editor::move_to_next_word_end);
4045 register_action(cx, Editor::move_to_next_subword_end);
4046 register_action(cx, Editor::move_to_beginning_of_line);
4047 register_action(cx, Editor::move_to_end_of_line);
4048 register_action(cx, Editor::move_to_start_of_paragraph);
4049 register_action(cx, Editor::move_to_end_of_paragraph);
4050 register_action(cx, Editor::move_to_beginning);
4051 register_action(cx, Editor::move_to_end);
4052 register_action(cx, Editor::select_up);
4053 register_action(cx, Editor::select_down);
4054 register_action(cx, Editor::select_left);
4055 register_action(cx, Editor::select_right);
4056 register_action(cx, Editor::select_to_previous_word_start);
4057 register_action(cx, Editor::select_to_previous_subword_start);
4058 register_action(cx, Editor::select_to_next_word_end);
4059 register_action(cx, Editor::select_to_next_subword_end);
4060 register_action(cx, Editor::select_to_beginning_of_line);
4061 register_action(cx, Editor::select_to_end_of_line);
4062 register_action(cx, Editor::select_to_start_of_paragraph);
4063 register_action(cx, Editor::select_to_end_of_paragraph);
4064 register_action(cx, Editor::select_to_beginning);
4065 register_action(cx, Editor::select_to_end);
4066 register_action(cx, Editor::select_all);
4067 register_action(cx, |editor, action, cx| {
4068 editor.select_all_matches(action, cx).log_err();
4069 });
4070 register_action(cx, Editor::select_line);
4071 register_action(cx, Editor::split_selection_into_lines);
4072 register_action(cx, Editor::add_selection_above);
4073 register_action(cx, Editor::add_selection_below);
4074 register_action(cx, |editor, action, cx| {
4075 editor.select_next(action, cx).log_err();
4076 });
4077 register_action(cx, |editor, action, cx| {
4078 editor.select_previous(action, cx).log_err();
4079 });
4080 register_action(cx, Editor::toggle_comments);
4081 register_action(cx, Editor::select_larger_syntax_node);
4082 register_action(cx, Editor::select_smaller_syntax_node);
4083 register_action(cx, Editor::move_to_enclosing_bracket);
4084 register_action(cx, Editor::undo_selection);
4085 register_action(cx, Editor::redo_selection);
4086 register_action(cx, Editor::go_to_diagnostic);
4087 register_action(cx, Editor::go_to_prev_diagnostic);
4088 register_action(cx, Editor::go_to_hunk);
4089 register_action(cx, Editor::go_to_prev_hunk);
4090 register_action(cx, Editor::go_to_definition);
4091 register_action(cx, Editor::go_to_definition_split);
4092 register_action(cx, Editor::go_to_type_definition);
4093 register_action(cx, Editor::go_to_type_definition_split);
4094 register_action(cx, Editor::fold);
4095 register_action(cx, Editor::fold_at);
4096 register_action(cx, Editor::unfold_lines);
4097 register_action(cx, Editor::unfold_at);
4098 register_action(cx, Editor::fold_selected_ranges);
4099 register_action(cx, Editor::show_completions);
4100 register_action(cx, Editor::toggle_code_actions);
4101 // on_action(cx, Editor::open_excerpts); todo!()
4102 register_action(cx, Editor::toggle_soft_wrap);
4103 register_action(cx, Editor::toggle_inlay_hints);
4104 register_action(cx, Editor::reveal_in_finder);
4105 register_action(cx, Editor::copy_path);
4106 register_action(cx, Editor::copy_relative_path);
4107 register_action(cx, Editor::copy_highlight_json);
4108 register_action(cx, |editor, action, cx| {
4109 editor
4110 .format(action, cx)
4111 .map(|task| task.detach_and_log_err(cx));
4112 });
4113 register_action(cx, Editor::restart_language_server);
4114 register_action(cx, Editor::show_character_palette);
4115 // on_action(cx, Editor::confirm_completion); todo!()
4116 register_action(cx, |editor, action, cx| {
4117 editor
4118 .confirm_code_action(action, cx)
4119 .map(|task| task.detach_and_log_err(cx));
4120 });
4121 register_action(cx, |editor, action, cx| {
4122 editor
4123 .rename(action, cx)
4124 .map(|task| task.detach_and_log_err(cx));
4125 });
4126 register_action(cx, |editor, action, cx| {
4127 editor
4128 .confirm_rename(action, cx)
4129 .map(|task| task.detach_and_log_err(cx));
4130 });
4131 register_action(cx, |editor, action, cx| {
4132 editor
4133 .find_all_references(action, cx)
4134 .map(|task| task.detach_and_log_err(cx));
4135 });
4136 register_action(cx, Editor::next_copilot_suggestion);
4137 register_action(cx, Editor::previous_copilot_suggestion);
4138 register_action(cx, Editor::copilot_suggest);
4139 register_action(cx, Editor::context_menu_first);
4140 register_action(cx, Editor::context_menu_prev);
4141 register_action(cx, Editor::context_menu_next);
4142 register_action(cx, Editor::context_menu_last);
4143}
4144
4145fn register_action<T: Action>(
4146 cx: &mut ViewContext<Editor>,
4147 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4148) {
4149 cx.on_action(TypeId::of::<T>(), move |editor, action, phase, cx| {
4150 let action = action.downcast_ref().unwrap();
4151 if phase == DispatchPhase::Bubble {
4152 listener(editor, action, cx);
4153 }
4154 })
4155}