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