1use crate::{
2 display_map::{BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint},
3 editor_settings::ShowScrollbar,
4 git::{diff_hunk_to_display, DisplayDiffHunk},
5 hover_popover::hover_at,
6 link_go_to_definition::{
7 update_go_to_definition_link, update_inlay_link_and_hover_points, GoToDefinitionTrigger,
8 },
9 scroll::scroll_amount::ScrollAmount,
10 CursorShape, DisplayPoint, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
11 HalfPageDown, HalfPageUp, LineDown, LineUp, MoveDown, PageDown, PageUp, Point, SelectPhase,
12 Selection, SoftWrap, ToPoint, MAX_LINE_LEN,
13};
14use anyhow::Result;
15use collections::{BTreeMap, HashMap};
16use gpui::{
17 black, hsla, point, px, relative, size, transparent_black, Action, AnyElement,
18 BorrowAppContext, BorrowWindow, Bounds, ContentMask, Corners, DispatchContext, DispatchPhase,
19 Edges, Element, ElementId, Entity, Hsla, KeyDownEvent, KeyListener, KeyMatch, Line, Modifiers,
20 MouseButton, MouseDownEvent, MouseMoveEvent, Pixels, ScrollWheelEvent, ShapedGlyph, Size,
21 StatefulInteraction, Style, TextRun, TextStyle, TextSystem, ViewContext, WindowContext,
22};
23use itertools::Itertools;
24use language::language_settings::ShowWhitespaceSetting;
25use multi_buffer::Anchor;
26use project::project_settings::{GitGutterSetting, ProjectSettings};
27use settings::Settings;
28use smallvec::SmallVec;
29use std::{
30 any::TypeId,
31 borrow::Cow,
32 cmp::{self, Ordering},
33 fmt::Write,
34 iter,
35 ops::Range,
36 sync::Arc,
37};
38use sum_tree::Bias;
39use theme::{ActiveTheme, PlayerColor};
40use util::ResultExt;
41use workspace::item::Item;
42
43enum FoldMarkers {}
44
45struct SelectionLayout {
46 head: DisplayPoint,
47 cursor_shape: CursorShape,
48 is_newest: bool,
49 is_local: bool,
50 range: Range<DisplayPoint>,
51 active_rows: Range<u32>,
52}
53
54impl SelectionLayout {
55 fn new<T: ToPoint + ToDisplayPoint + Clone>(
56 selection: Selection<T>,
57 line_mode: bool,
58 cursor_shape: CursorShape,
59 map: &DisplaySnapshot,
60 is_newest: bool,
61 is_local: bool,
62 ) -> Self {
63 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
64 let display_selection = point_selection.map(|p| p.to_display_point(map));
65 let mut range = display_selection.range();
66 let mut head = display_selection.head();
67 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
68 ..map.next_line_boundary(point_selection.end).1.row();
69
70 // vim visual line mode
71 if line_mode {
72 let point_range = map.expand_to_line(point_selection.range());
73 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
74 }
75
76 // any vim visual mode (including line mode)
77 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
78 if head.column() > 0 {
79 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
80 } else if head.row() > 0 && head != map.max_point() {
81 head = map.clip_point(
82 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
83 Bias::Left,
84 );
85 // updating range.end is a no-op unless you're cursor is
86 // on the newline containing a multi-buffer divider
87 // in which case the clip_point may have moved the head up
88 // an additional row.
89 range.end = DisplayPoint::new(head.row() + 1, 0);
90 active_rows.end = head.row();
91 }
92 }
93
94 Self {
95 head,
96 cursor_shape,
97 is_newest,
98 is_local,
99 range,
100 active_rows,
101 }
102 }
103}
104
105pub struct EditorElement {
106 style: EditorStyle,
107}
108
109impl EditorElement {
110 pub fn new(style: EditorStyle) -> Self {
111 Self { style }
112 }
113
114 // fn attach_mouse_handlers(
115 // position_map: &Arc<PositionMap>,
116 // has_popovers: bool,
117 // visible_bounds: Bounds<Pixels>,
118 // text_bounds: Bounds<Pixels>,
119 // gutter_bounds: Bounds<Pixels>,
120 // bounds: Bounds<Pixels>,
121 // cx: &mut ViewContext<Editor>,
122 // ) {
123 // enum EditorElementMouseHandlers {}
124 // let view_id = cx.view_id();
125 // cx.scene().push_mouse_region(
126 // MouseRegion::new::<EditorElementMouseHandlers>(view_id, view_id, visible_bounds)
127 // .on_down(MouseButton::Left, {
128 // let position_map = position_map.clone();
129 // move |event, editor, cx| {
130 // if !Self::mouse_down(
131 // editor,
132 // event.platform_event,
133 // position_map.as_ref(),
134 // text_bounds,
135 // gutter_bounds,
136 // cx,
137 // ) {
138 // cx.propagate_event();
139 // }
140 // }
141 // })
142 // .on_down(MouseButton::Right, {
143 // let position_map = position_map.clone();
144 // move |event, editor, cx| {
145 // if !Self::mouse_right_down(
146 // editor,
147 // event.position,
148 // position_map.as_ref(),
149 // text_bounds,
150 // cx,
151 // ) {
152 // cx.propagate_event();
153 // }
154 // }
155 // })
156 // .on_up(MouseButton::Left, {
157 // let position_map = position_map.clone();
158 // move |event, editor, cx| {
159 // if !Self::mouse_up(
160 // editor,
161 // event.position,
162 // event.cmd,
163 // event.shift,
164 // event.alt,
165 // position_map.as_ref(),
166 // text_bounds,
167 // cx,
168 // ) {
169 // cx.propagate_event()
170 // }
171 // }
172 // })
173 // .on_drag(MouseButton::Left, {
174 // let position_map = position_map.clone();
175 // move |event, editor, cx| {
176 // if event.end {
177 // return;
178 // }
179
180 // if !Self::mouse_dragged(
181 // editor,
182 // event.platform_event,
183 // position_map.as_ref(),
184 // text_bounds,
185 // cx,
186 // ) {
187 // cx.propagate_event()
188 // }
189 // }
190 // })
191 // .on_move({
192 // let position_map = position_map.clone();
193 // move |event, editor, cx| {
194 // if !Self::mouse_moved(
195 // editor,
196 // event.platform_event,
197 // &position_map,
198 // text_bounds,
199 // cx,
200 // ) {
201 // cx.propagate_event()
202 // }
203 // }
204 // })
205 // .on_move_out(move |_, editor: &mut Editor, cx| {
206 // if has_popovers {
207 // hide_hover(editor, cx);
208 // }
209 // })
210 // .on_scroll({
211 // let position_map = position_map.clone();
212 // move |event, editor, cx| {
213 // if !Self::scroll(
214 // editor,
215 // event.position,
216 // *event.delta.raw(),
217 // event.delta.precise(),
218 // &position_map,
219 // bounds,
220 // cx,
221 // ) {
222 // cx.propagate_event()
223 // }
224 // }
225 // }),
226 // );
227
228 // enum GutterHandlers {}
229 // let view_id = cx.view_id();
230 // let region_id = cx.view_id() + 1;
231 // cx.scene().push_mouse_region(
232 // MouseRegion::new::<GutterHandlers>(view_id, region_id, gutter_bounds).on_hover(
233 // |hover, editor: &mut Editor, cx| {
234 // editor.gutter_hover(
235 // &GutterHover {
236 // hovered: hover.started,
237 // },
238 // cx,
239 // );
240 // },
241 // ),
242 // )
243 // }
244
245 fn mouse_down(
246 editor: &mut Editor,
247 event: &MouseDownEvent,
248 position_map: &PositionMap,
249 text_bounds: Bounds<Pixels>,
250 gutter_bounds: Bounds<Pixels>,
251 cx: &mut ViewContext<Editor>,
252 ) -> bool {
253 let mut click_count = event.click_count;
254 let modifiers = event.modifiers;
255
256 if gutter_bounds.contains_point(&event.position) {
257 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
258 } else if !text_bounds.contains_point(&event.position) {
259 return false;
260 }
261
262 let point_for_position = position_map.point_for_position(text_bounds, event.position);
263 let position = point_for_position.previous_valid;
264 if modifiers.shift && modifiers.alt {
265 editor.select(
266 SelectPhase::BeginColumnar {
267 position,
268 goal_column: point_for_position.exact_unclipped.column(),
269 },
270 cx,
271 );
272 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
273 editor.select(
274 SelectPhase::Extend {
275 position,
276 click_count,
277 },
278 cx,
279 );
280 } else {
281 editor.select(
282 SelectPhase::Begin {
283 position,
284 add: modifiers.alt,
285 click_count,
286 },
287 cx,
288 );
289 }
290
291 true
292 }
293
294 // fn mouse_right_down(
295 // editor: &mut Editor,
296 // position: gpui::Point<Pixels>,
297 // position_map: &PositionMap,
298 // text_bounds: Bounds<Pixels>,
299 // cx: &mut EventContext<Editor>,
300 // ) -> bool {
301 // if !text_bounds.contains_point(position) {
302 // return false;
303 // }
304 // let point_for_position = position_map.point_for_position(text_bounds, position);
305 // mouse_context_menu::deploy_context_menu(
306 // editor,
307 // position,
308 // point_for_position.previous_valid,
309 // cx,
310 // );
311 // true
312 // }
313
314 // fn mouse_up(
315 // editor: &mut Editor,
316 // position: gpui::Point<Pixels>,
317 // cmd: bool,
318 // shift: bool,
319 // alt: bool,
320 // position_map: &PositionMap,
321 // text_bounds: Bounds<Pixels>,
322 // cx: &mut EventContext<Editor>,
323 // ) -> bool {
324 // let end_selection = editor.has_pending_selection();
325 // let pending_nonempty_selections = editor.has_pending_nonempty_selection();
326
327 // if end_selection {
328 // editor.select(SelectPhase::End, cx);
329 // }
330
331 // if !pending_nonempty_selections && cmd && text_bounds.contains_point(position) {
332 // let point = position_map.point_for_position(text_bounds, position);
333 // let could_be_inlay = point.as_valid().is_none();
334 // if shift || could_be_inlay {
335 // go_to_fetched_type_definition(editor, point, alt, cx);
336 // } else {
337 // go_to_fetched_definition(editor, point, alt, cx);
338 // }
339
340 // return true;
341 // }
342
343 // end_selection
344 // }
345
346 fn mouse_moved(
347 editor: &mut Editor,
348 event: &MouseMoveEvent,
349 position_map: &PositionMap,
350 text_bounds: Bounds<Pixels>,
351 cx: &mut ViewContext<Editor>,
352 ) -> bool {
353 let modifiers = event.modifiers;
354 if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
355 let point_for_position = position_map.point_for_position(text_bounds, event.position);
356 let mut scroll_delta = gpui::Point::<f32>::zero();
357 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
358 let top = text_bounds.origin.y + vertical_margin;
359 let bottom = text_bounds.lower_left().y - vertical_margin;
360 if event.position.y < top {
361 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
362 }
363 if event.position.y > bottom {
364 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
365 }
366
367 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
368 let left = text_bounds.origin.x + horizontal_margin;
369 let right = text_bounds.upper_right().x - horizontal_margin;
370 if event.position.x < left {
371 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
372 }
373 if event.position.x > right {
374 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
375 }
376
377 editor.select(
378 SelectPhase::Update {
379 position: point_for_position.previous_valid,
380 goal_column: point_for_position.exact_unclipped.column(),
381 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
382 .clamp(&gpui::Point::zero(), &position_map.scroll_max),
383 },
384 cx,
385 );
386 }
387
388 // This will be handled more correctly once https://github.com/zed-industries/zed/issues/1218 is completed
389 // Don't trigger hover popover if mouse is hovering over context menu
390 if text_bounds.contains_point(&event.position) {
391 let point_for_position = position_map.point_for_position(text_bounds, event.position);
392
393 match point_for_position.as_valid() {
394 Some(point) => {
395 update_go_to_definition_link(
396 editor,
397 Some(GoToDefinitionTrigger::Text(point)),
398 modifiers.command,
399 modifiers.shift,
400 cx,
401 );
402 hover_at(editor, Some(point), cx);
403 }
404 None => {
405 update_inlay_link_and_hover_points(
406 &position_map.snapshot,
407 point_for_position,
408 editor,
409 modifiers.command,
410 modifiers.shift,
411 cx,
412 );
413 }
414 }
415 } else {
416 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
417 hover_at(editor, None, cx);
418 }
419
420 true
421 }
422
423 fn scroll(
424 editor: &mut Editor,
425 event: &ScrollWheelEvent,
426 position_map: &PositionMap,
427 bounds: Bounds<Pixels>,
428 cx: &mut ViewContext<Editor>,
429 ) -> bool {
430 if !bounds.contains_point(&event.position) {
431 return false;
432 }
433
434 let line_height = position_map.line_height;
435 let max_glyph_width = position_map.em_width;
436 let (delta, axis) = match event.delta {
437 gpui::ScrollDelta::Pixels(mut pixels) => {
438 //Trackpad
439 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
440 (pixels, axis)
441 }
442
443 gpui::ScrollDelta::Lines(lines) => {
444 //Not trackpad
445 let pixels = point(lines.x * max_glyph_width, lines.y * line_height);
446 (pixels, None)
447 }
448 };
449
450 let scroll_position = position_map.snapshot.scroll_position();
451 let x = f32::from((scroll_position.x * max_glyph_width - delta.x) / max_glyph_width);
452 let y = f32::from((scroll_position.y * line_height - delta.y) / line_height);
453 let scroll_position = point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
454 editor.scroll(scroll_position, axis, cx);
455
456 true
457 }
458
459 fn paint_background(
460 &self,
461 gutter_bounds: Bounds<Pixels>,
462 text_bounds: Bounds<Pixels>,
463 layout: &LayoutState,
464 cx: &mut ViewContext<Editor>,
465 ) {
466 let bounds = gutter_bounds.union(&text_bounds);
467 let scroll_top =
468 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
469 let gutter_bg = cx.theme().colors().editor_gutter_background;
470 cx.paint_quad(
471 gutter_bounds,
472 Corners::default(),
473 gutter_bg,
474 Edges::default(),
475 transparent_black(),
476 );
477 cx.paint_quad(
478 text_bounds,
479 Corners::default(),
480 self.style.background,
481 Edges::default(),
482 transparent_black(),
483 );
484
485 if let EditorMode::Full = layout.mode {
486 let mut active_rows = layout.active_rows.iter().peekable();
487 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
488 let mut end_row = *start_row;
489 while active_rows.peek().map_or(false, |r| {
490 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
491 }) {
492 active_rows.next().unwrap();
493 end_row += 1;
494 }
495
496 if !contains_non_empty_selection {
497 let origin = point(
498 bounds.origin.x,
499 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
500 - scroll_top,
501 );
502 let size = size(
503 bounds.size.width,
504 layout.position_map.line_height * (end_row - start_row + 1) as f32,
505 );
506 let active_line_bg = cx.theme().colors().editor_active_line_background;
507 cx.paint_quad(
508 Bounds { origin, size },
509 Corners::default(),
510 active_line_bg,
511 Edges::default(),
512 transparent_black(),
513 );
514 }
515 }
516
517 if let Some(highlighted_rows) = &layout.highlighted_rows {
518 let origin = point(
519 bounds.origin.x,
520 bounds.origin.y
521 + (layout.position_map.line_height * highlighted_rows.start as f32)
522 - scroll_top,
523 );
524 let size = size(
525 bounds.size.width,
526 layout.position_map.line_height * highlighted_rows.len() as f32,
527 );
528 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
529 cx.paint_quad(
530 Bounds { origin, size },
531 Corners::default(),
532 highlighted_line_bg,
533 Edges::default(),
534 transparent_black(),
535 );
536 }
537
538 let scroll_left =
539 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
540
541 for (wrap_position, active) in layout.wrap_guides.iter() {
542 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
543 - scroll_left;
544
545 if x < text_bounds.origin.x
546 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
547 {
548 continue;
549 }
550
551 let color = if *active {
552 cx.theme().colors().editor_active_wrap_guide
553 } else {
554 cx.theme().colors().editor_wrap_guide
555 };
556 cx.paint_quad(
557 Bounds {
558 origin: point(x, text_bounds.origin.y),
559 size: size(px(1.), text_bounds.size.height),
560 },
561 Corners::default(),
562 color,
563 Edges::default(),
564 transparent_black(),
565 );
566 }
567 }
568 }
569
570 fn paint_gutter(
571 &mut self,
572 bounds: Bounds<Pixels>,
573 layout: &LayoutState,
574 editor: &mut Editor,
575 cx: &mut ViewContext<Editor>,
576 ) {
577 let line_height = layout.position_map.line_height;
578
579 let scroll_position = layout.position_map.snapshot.scroll_position();
580 let scroll_top = scroll_position.y * line_height;
581
582 let show_gutter = matches!(
583 ProjectSettings::get_global(cx).git.git_gutter,
584 Some(GitGutterSetting::TrackedFiles)
585 );
586
587 if show_gutter {
588 Self::paint_diff_hunks(bounds, layout, cx);
589 }
590
591 for (ix, line) in layout.line_number_layouts.iter().enumerate() {
592 if let Some(line) = line {
593 let line_origin = bounds.origin
594 + point(
595 bounds.size.width - line.width - layout.gutter_padding,
596 ix as f32 * line_height - (scroll_top % line_height),
597 );
598
599 line.paint(line_origin, line_height, cx);
600 }
601 }
602
603 // todo!("fold indicators")
604 // for (ix, fold_indicator) in layout.fold_indicators.iter_mut().enumerate() {
605 // if let Some(indicator) = fold_indicator.as_mut() {
606 // let position = point(
607 // bounds.width() - layout.gutter_padding,
608 // ix as f32 * line_height - (scroll_top % line_height),
609 // );
610 // let centering_offset = point(
611 // (layout.gutter_padding + layout.gutter_margin - indicator.size().x) / 2.,
612 // (line_height - indicator.size().y) / 2.,
613 // );
614
615 // let indicator_origin = bounds.origin + position + centering_offset;
616
617 // indicator.paint(indicator_origin, visible_bounds, editor, cx);
618 // }
619 // }
620
621 // todo!("code actions indicator")
622 // if let Some((row, indicator)) = layout.code_actions_indicator.as_mut() {
623 // let mut x = 0.;
624 // let mut y = *row as f32 * line_height - scroll_top;
625 // x += ((layout.gutter_padding + layout.gutter_margin) - indicator.size().x) / 2.;
626 // y += (line_height - indicator.size().y) / 2.;
627 // indicator.paint(bounds.origin + point(x, y), visible_bounds, editor, cx);
628 // }
629 }
630
631 fn paint_diff_hunks(
632 bounds: Bounds<Pixels>,
633 layout: &LayoutState,
634 cx: &mut ViewContext<Editor>,
635 ) {
636 // todo!()
637 // let diff_style = &theme::current(cx).editor.diff.clone();
638 // let line_height = layout.position_map.line_height;
639
640 // let scroll_position = layout.position_map.snapshot.scroll_position();
641 // let scroll_top = scroll_position.y * line_height;
642
643 // for hunk in &layout.display_hunks {
644 // let (display_row_range, status) = match hunk {
645 // //TODO: This rendering is entirely a horrible hack
646 // &DisplayDiffHunk::Folded { display_row: row } => {
647 // let start_y = row as f32 * line_height - scroll_top;
648 // let end_y = start_y + line_height;
649
650 // let width = diff_style.removed_width_em * line_height;
651 // let highlight_origin = bounds.origin + point(-width, start_y);
652 // let highlight_size = point(width * 2., end_y - start_y);
653 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
654
655 // cx.paint_quad(Quad {
656 // bounds: highlight_bounds,
657 // background: Some(diff_style.modified),
658 // border: Border::new(0., Color::transparent_black()).into(),
659 // corner_radii: (1. * line_height).into(),
660 // });
661
662 // continue;
663 // }
664
665 // DisplayDiffHunk::Unfolded {
666 // display_row_range,
667 // status,
668 // } => (display_row_range, status),
669 // };
670
671 // let color = match status {
672 // DiffHunkStatus::Added => diff_style.inserted,
673 // DiffHunkStatus::Modified => diff_style.modified,
674
675 // //TODO: This rendering is entirely a horrible hack
676 // DiffHunkStatus::Removed => {
677 // let row = display_row_range.start;
678
679 // let offset = line_height / 2.;
680 // let start_y = row as f32 * line_height - offset - scroll_top;
681 // let end_y = start_y + line_height;
682
683 // let width = diff_style.removed_width_em * line_height;
684 // let highlight_origin = bounds.origin + point(-width, start_y);
685 // let highlight_size = point(width * 2., end_y - start_y);
686 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
687
688 // cx.paint_quad(Quad {
689 // bounds: highlight_bounds,
690 // background: Some(diff_style.deleted),
691 // border: Border::new(0., Color::transparent_black()).into(),
692 // corner_radii: (1. * line_height).into(),
693 // });
694
695 // continue;
696 // }
697 // };
698
699 // let start_row = display_row_range.start;
700 // let end_row = display_row_range.end;
701
702 // let start_y = start_row as f32 * line_height - scroll_top;
703 // let end_y = end_row as f32 * line_height - scroll_top;
704
705 // let width = diff_style.width_em * line_height;
706 // let highlight_origin = bounds.origin + point(-width, start_y);
707 // let highlight_size = point(width * 2., end_y - start_y);
708 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
709
710 // cx.paint_quad(Quad {
711 // bounds: highlight_bounds,
712 // background: Some(color),
713 // border: Border::new(0., Color::transparent_black()).into(),
714 // corner_radii: (diff_style.corner_radius * line_height).into(),
715 // });
716 // }
717 }
718
719 fn paint_text(
720 &mut self,
721 bounds: Bounds<Pixels>,
722 layout: &LayoutState,
723 editor: &mut Editor,
724 cx: &mut ViewContext<Editor>,
725 ) {
726 let scroll_position = layout.position_map.snapshot.scroll_position();
727 let start_row = layout.visible_display_row_range.start;
728 let scroll_top = scroll_position.y * layout.position_map.line_height;
729 let max_glyph_width = layout.position_map.em_width;
730 let scroll_left = scroll_position.x * max_glyph_width;
731 let content_origin = bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
732 let line_end_overshoot = 0.15 * layout.position_map.line_height;
733 let whitespace_setting = editor.buffer.read(cx).settings_at(0, cx).show_whitespaces;
734
735 cx.with_content_mask(ContentMask { bounds }, |cx| {
736 // todo!("cursor region")
737 // cx.scene().push_cursor_region(CursorRegion {
738 // bounds,
739 // style: if !editor.link_go_to_definition_state.definitions.is_empty {
740 // CursorStyle::PointingHand
741 // } else {
742 // CursorStyle::IBeam
743 // },
744 // });
745
746 // todo!("fold ranges")
747 // let fold_corner_radius =
748 // self.style.folds.ellipses.corner_radius_factor * layout.position_map.line_height;
749 // for (id, range, color) in layout.fold_ranges.iter() {
750 // self.paint_highlighted_range(
751 // range.clone(),
752 // *color,
753 // fold_corner_radius,
754 // fold_corner_radius * 2.,
755 // layout,
756 // content_origin,
757 // scroll_top,
758 // scroll_left,
759 // bounds,
760 // cx,
761 // );
762
763 // for bound in range_to_bounds(
764 // &range,
765 // content_origin,
766 // scroll_left,
767 // scroll_top,
768 // &layout.visible_display_row_range,
769 // line_end_overshoot,
770 // &layout.position_map,
771 // ) {
772 // cx.scene().push_cursor_region(CursorRegion {
773 // bounds: bound,
774 // style: CursorStyle::PointingHand,
775 // });
776
777 // let display_row = range.start.row();
778
779 // let buffer_row = DisplayPoint::new(display_row, 0)
780 // .to_point(&layout.position_map.snapshot.display_snapshot)
781 // .row;
782
783 // let view_id = cx.view_id();
784 // cx.scene().push_mouse_region(
785 // MouseRegion::new::<FoldMarkers>(view_id, *id as usize, bound)
786 // .on_click(MouseButton::Left, move |_, editor: &mut Editor, cx| {
787 // editor.unfold_at(&UnfoldAt { buffer_row }, cx)
788 // })
789 // .with_notify_on_hover(true)
790 // .with_notify_on_click(true),
791 // )
792 // }
793 // }
794
795 for (range, color) in &layout.highlighted_ranges {
796 self.paint_highlighted_range(
797 range.clone(),
798 *color,
799 Pixels::ZERO,
800 line_end_overshoot,
801 layout,
802 content_origin,
803 scroll_top,
804 scroll_left,
805 bounds,
806 cx,
807 );
808 }
809
810 let mut cursors = SmallVec::<[Cursor; 32]>::new();
811 let corner_radius = 0.15 * layout.position_map.line_height;
812 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
813
814 for (selection_style, selections) in &layout.selections {
815 for selection in selections {
816 self.paint_highlighted_range(
817 selection.range.clone(),
818 selection_style.selection,
819 corner_radius,
820 corner_radius * 2.,
821 layout,
822 content_origin,
823 scroll_top,
824 scroll_left,
825 bounds,
826 cx,
827 );
828
829 if selection.is_local && !selection.range.is_empty() {
830 invisible_display_ranges.push(selection.range.clone());
831 }
832
833 if !selection.is_local || editor.show_local_cursors(cx) {
834 let cursor_position = selection.head;
835 if layout
836 .visible_display_row_range
837 .contains(&cursor_position.row())
838 {
839 let cursor_row_layout = &layout.position_map.line_layouts
840 [(cursor_position.row() - start_row) as usize]
841 .line;
842 let cursor_column = cursor_position.column() as usize;
843
844 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
845 let mut block_width = cursor_row_layout.x_for_index(cursor_column + 1)
846 - cursor_character_x;
847 if block_width == Pixels::ZERO {
848 block_width = layout.position_map.em_width;
849 }
850 let block_text = if let CursorShape::Block = selection.cursor_shape {
851 layout
852 .position_map
853 .snapshot
854 .chars_at(cursor_position)
855 .next()
856 .and_then(|(character, _)| {
857 let text = character.to_string();
858 cx.text_system()
859 .layout_text(
860 &text,
861 cursor_row_layout.font_size,
862 &[TextRun {
863 len: text.len(),
864 font: self.style.text.font(),
865 color: self.style.background,
866 underline: None,
867 }],
868 None,
869 )
870 .unwrap()
871 .pop()
872 })
873 } else {
874 None
875 };
876
877 let x = cursor_character_x - scroll_left;
878 let y = cursor_position.row() as f32 * layout.position_map.line_height
879 - scroll_top;
880 if selection.is_newest {
881 editor.pixel_position_of_newest_cursor = Some(point(
882 bounds.origin.x + x + block_width / 2.,
883 bounds.origin.y + y + layout.position_map.line_height / 2.,
884 ));
885 }
886 cursors.push(Cursor {
887 color: selection_style.cursor,
888 block_width,
889 origin: point(x, y),
890 line_height: layout.position_map.line_height,
891 shape: selection.cursor_shape,
892 block_text,
893 });
894 }
895 }
896 }
897 }
898
899 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
900 let row = start_row + ix as u32;
901 line_with_invisibles.draw(
902 layout,
903 row,
904 scroll_top,
905 content_origin,
906 scroll_left,
907 whitespace_setting,
908 &invisible_display_ranges,
909 cx,
910 )
911 }
912
913 cx.stack(0, |cx| {
914 for cursor in cursors {
915 cursor.paint(content_origin, cx);
916 }
917 });
918 // cx.scene().push_layer(Some(bounds));
919
920 // cx.scene().pop_layer();
921
922 // if let Some((position, context_menu)) = layout.context_menu.as_mut() {
923 // cx.scene().push_stacking_context(None, None);
924 // let cursor_row_layout =
925 // &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
926 // let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_left;
927 // let y = (position.row() + 1) as f32 * layout.position_map.line_height - scroll_top;
928 // let mut list_origin = content_origin + point(x, y);
929 // let list_width = context_menu.size().x;
930 // let list_height = context_menu.size().y;
931
932 // // Snap the right edge of the list to the right edge of the window if
933 // // its horizontal bounds overflow.
934 // if list_origin.x + list_width > cx.window_size().x {
935 // list_origin.set_x((cx.window_size().x - list_width).max(0.));
936 // }
937
938 // if list_origin.y + list_height > bounds.max_y {
939 // list_origin
940 // .set_y(list_origin.y - layout.position_map.line_height - list_height);
941 // }
942
943 // context_menu.paint(
944 // list_origin,
945 // Bounds::<Pixels>::from_points(
946 // gpui::Point::<Pixels>::zero(),
947 // point(f32::MAX, f32::MAX),
948 // ), // Let content bleed outside of editor
949 // editor,
950 // cx,
951 // );
952
953 // cx.scene().pop_stacking_context();
954 // }
955
956 // if let Some((position, hover_popovers)) = layout.hover_popovers.as_mut() {
957 // cx.scene().push_stacking_context(None, None);
958
959 // // This is safe because we check on layout whether the required row is available
960 // let hovered_row_layout =
961 // &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
962
963 // // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
964 // // height. This is the size we will use to decide whether to render popovers above or below
965 // // the hovered line.
966 // let first_size = hover_popovers[0].size();
967 // let height_to_reserve = first_size.y
968 // + 1.5 * MIN_POPOVER_LINE_HEIGHT as f32 * layout.position_map.line_height;
969
970 // // Compute Hovered Point
971 // let x = hovered_row_layout.x_for_index(position.column() as usize) - scroll_left;
972 // let y = position.row() as f32 * layout.position_map.line_height - scroll_top;
973 // let hovered_point = content_origin + point(x, y);
974
975 // if hovered_point.y - height_to_reserve > 0.0 {
976 // // There is enough space above. Render popovers above the hovered point
977 // let mut current_y = hovered_point.y;
978 // for hover_popover in hover_popovers {
979 // let size = hover_popover.size();
980 // let mut popover_origin = point(hovered_point.x, current_y - size.y);
981
982 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
983 // if x_out_of_bounds < 0.0 {
984 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
985 // }
986
987 // hover_popover.paint(
988 // popover_origin,
989 // Bounds::<Pixels>::from_points(
990 // gpui::Point::<Pixels>::zero(),
991 // point(f32::MAX, f32::MAX),
992 // ), // Let content bleed outside of editor
993 // editor,
994 // cx,
995 // );
996
997 // current_y = popover_origin.y - HOVER_POPOVER_GAP;
998 // }
999 // } else {
1000 // // There is not enough space above. Render popovers below the hovered point
1001 // let mut current_y = hovered_point.y + layout.position_map.line_height;
1002 // for hover_popover in hover_popovers {
1003 // let size = hover_popover.size();
1004 // let mut popover_origin = point(hovered_point.x, current_y);
1005
1006 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
1007 // if x_out_of_bounds < 0.0 {
1008 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
1009 // }
1010
1011 // hover_popover.paint(
1012 // popover_origin,
1013 // Bounds::<Pixels>::from_points(
1014 // gpui::Point::<Pixels>::zero(),
1015 // point(f32::MAX, f32::MAX),
1016 // ), // Let content bleed outside of editor
1017 // editor,
1018 // cx,
1019 // );
1020
1021 // current_y = popover_origin.y + size.y + HOVER_POPOVER_GAP;
1022 // }
1023 // }
1024
1025 // cx.scene().pop_stacking_context();
1026 // }
1027 })
1028 }
1029
1030 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1031 bounds.upper_right().x - self.style.scrollbar_width
1032 }
1033
1034 // fn paint_scrollbar(
1035 // &mut self,
1036 // bounds: Bounds<Pixels>,
1037 // layout: &mut LayoutState,
1038 // editor: &Editor,
1039 // cx: &mut ViewContext<Editor>,
1040 // ) {
1041 // enum ScrollbarMouseHandlers {}
1042 // if layout.mode != EditorMode::Full {
1043 // return;
1044 // }
1045
1046 // let style = &self.style.theme.scrollbar;
1047
1048 // let top = bounds.min_y;
1049 // let bottom = bounds.max_y;
1050 // let right = bounds.max_x;
1051 // let left = self.scrollbar_left(&bounds);
1052 // let row_range = &layout.scrollbar_row_range;
1053 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1054
1055 // let mut height = bounds.height();
1056 // let mut first_row_y_offset = 0.0;
1057
1058 // // Impose a minimum height on the scrollbar thumb
1059 // let row_height = height / max_row;
1060 // let min_thumb_height =
1061 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
1062 // let thumb_height = (row_range.end - row_range.start) * row_height;
1063 // if thumb_height < min_thumb_height {
1064 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1065 // height -= min_thumb_height - thumb_height;
1066 // }
1067
1068 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
1069
1070 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1071 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1072 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
1073 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
1074
1075 // if layout.show_scrollbars {
1076 // cx.paint_quad(Quad {
1077 // bounds: track_bounds,
1078 // border: style.track.border.into(),
1079 // background: style.track.background_color,
1080 // ..Default::default()
1081 // });
1082 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
1083 // let theme = theme::current(cx);
1084 // let scrollbar_theme = &theme.editor.scrollbar;
1085 // if layout.is_singleton && scrollbar_settings.selections {
1086 // let start_anchor = Anchor::min();
1087 // let end_anchor = Anchor::max;
1088 // let color = scrollbar_theme.selections;
1089 // let border = Border {
1090 // width: 1.,
1091 // color: style.thumb.border.color,
1092 // overlay: false,
1093 // top: false,
1094 // right: true,
1095 // bottom: false,
1096 // left: true,
1097 // };
1098 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
1099 // let start_y = y_for_row(start.row() as f32);
1100 // let mut end_y = y_for_row(end.row() as f32);
1101 // if end_y - start_y < 1. {
1102 // end_y = start_y + 1.;
1103 // }
1104 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1105
1106 // cx.paint_quad(Quad {
1107 // bounds,
1108 // background: Some(color),
1109 // border: border.into(),
1110 // corner_radii: style.thumb.corner_radii.into(),
1111 // })
1112 // };
1113 // let background_ranges = editor
1114 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1115 // start_anchor..end_anchor,
1116 // &layout.position_map.snapshot,
1117 // 50000,
1118 // );
1119 // for row in background_ranges {
1120 // let start = row.start();
1121 // let end = row.end();
1122 // push_region(*start, *end);
1123 // }
1124 // }
1125
1126 // if layout.is_singleton && scrollbar_settings.git_diff {
1127 // let diff_style = scrollbar_theme.git.clone();
1128 // for hunk in layout
1129 // .position_map
1130 // .snapshot
1131 // .buffer_snapshot
1132 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1133 // {
1134 // let start_display = Point::new(hunk.buffer_range.start, 0)
1135 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1136 // let end_display = Point::new(hunk.buffer_range.end, 0)
1137 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1138 // let start_y = y_for_row(start_display.row() as f32);
1139 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1140 // y_for_row((end_display.row() + 1) as f32)
1141 // } else {
1142 // y_for_row((end_display.row()) as f32)
1143 // };
1144
1145 // if end_y - start_y < 1. {
1146 // end_y = start_y + 1.;
1147 // }
1148 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1149
1150 // let color = match hunk.status() {
1151 // DiffHunkStatus::Added => diff_style.inserted,
1152 // DiffHunkStatus::Modified => diff_style.modified,
1153 // DiffHunkStatus::Removed => diff_style.deleted,
1154 // };
1155
1156 // let border = Border {
1157 // width: 1.,
1158 // color: style.thumb.border.color,
1159 // overlay: false,
1160 // top: false,
1161 // right: true,
1162 // bottom: false,
1163 // left: true,
1164 // };
1165
1166 // cx.paint_quad(Quad {
1167 // bounds,
1168 // background: Some(color),
1169 // border: border.into(),
1170 // corner_radii: style.thumb.corner_radii.into(),
1171 // })
1172 // }
1173 // }
1174
1175 // cx.paint_quad(Quad {
1176 // bounds: thumb_bounds,
1177 // border: style.thumb.border.into(),
1178 // background: style.thumb.background_color,
1179 // corner_radii: style.thumb.corner_radii.into(),
1180 // });
1181 // }
1182
1183 // cx.scene().push_cursor_region(CursorRegion {
1184 // bounds: track_bounds,
1185 // style: CursorStyle::Arrow,
1186 // });
1187 // let region_id = cx.view_id();
1188 // cx.scene().push_mouse_region(
1189 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1190 // .on_move(move |event, editor: &mut Editor, cx| {
1191 // if event.pressed_button.is_none() {
1192 // editor.scroll_manager.show_scrollbar(cx);
1193 // }
1194 // })
1195 // .on_down(MouseButton::Left, {
1196 // let row_range = row_range.clone();
1197 // move |event, editor: &mut Editor, cx| {
1198 // let y = event.position.y;
1199 // if y < thumb_top || thumb_bottom < y {
1200 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1201 // let top_row = center_row
1202 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1203 // let mut position = editor.scroll_position(cx);
1204 // position.set_y(top_row as f32);
1205 // editor.set_scroll_position(position, cx);
1206 // } else {
1207 // editor.scroll_manager.show_scrollbar(cx);
1208 // }
1209 // }
1210 // })
1211 // .on_drag(MouseButton::Left, {
1212 // move |event, editor: &mut Editor, cx| {
1213 // if event.end {
1214 // return;
1215 // }
1216
1217 // let y = event.prev_mouse_position.y;
1218 // let new_y = event.position.y;
1219 // if thumb_top < y && y < thumb_bottom {
1220 // let mut position = editor.scroll_position(cx);
1221 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1222 // if position.y < 0.0 {
1223 // position.set_y(0.);
1224 // }
1225 // editor.set_scroll_position(position, cx);
1226 // }
1227 // }
1228 // }),
1229 // );
1230 // }
1231
1232 #[allow(clippy::too_many_arguments)]
1233 fn paint_highlighted_range(
1234 &self,
1235 range: Range<DisplayPoint>,
1236 color: Hsla,
1237 corner_radius: Pixels,
1238 line_end_overshoot: Pixels,
1239 layout: &LayoutState,
1240 content_origin: gpui::Point<Pixels>,
1241 scroll_top: Pixels,
1242 scroll_left: Pixels,
1243 bounds: Bounds<Pixels>,
1244 cx: &mut ViewContext<Editor>,
1245 ) {
1246 let start_row = layout.visible_display_row_range.start;
1247 let end_row = layout.visible_display_row_range.end;
1248 if range.start != range.end {
1249 let row_range = if range.end.column() == 0 {
1250 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1251 } else {
1252 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1253 };
1254
1255 let highlighted_range = HighlightedRange {
1256 color,
1257 line_height: layout.position_map.line_height,
1258 corner_radius,
1259 start_y: content_origin.y
1260 + row_range.start as f32 * layout.position_map.line_height
1261 - scroll_top,
1262 lines: row_range
1263 .into_iter()
1264 .map(|row| {
1265 let line_layout =
1266 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1267 HighlightedRangeLine {
1268 start_x: if row == range.start.row() {
1269 content_origin.x
1270 + line_layout.x_for_index(range.start.column() as usize)
1271 - scroll_left
1272 } else {
1273 content_origin.x - scroll_left
1274 },
1275 end_x: if row == range.end.row() {
1276 content_origin.x
1277 + line_layout.x_for_index(range.end.column() as usize)
1278 - scroll_left
1279 } else {
1280 content_origin.x + line_layout.width + line_end_overshoot
1281 - scroll_left
1282 },
1283 }
1284 })
1285 .collect(),
1286 };
1287
1288 highlighted_range.paint(bounds, cx);
1289 }
1290 }
1291
1292 // fn paint_blocks(
1293 // &mut self,
1294 // bounds: Bounds<Pixels>,
1295 // visible_bounds: Bounds<Pixels>,
1296 // layout: &mut LayoutState,
1297 // editor: &mut Editor,
1298 // cx: &mut ViewContext<Editor>,
1299 // ) {
1300 // let scroll_position = layout.position_map.snapshot.scroll_position();
1301 // let scroll_left = scroll_position.x * layout.position_map.em_width;
1302 // let scroll_top = scroll_position.y * layout.position_map.line_height;
1303
1304 // for block in &mut layout.blocks {
1305 // let mut origin = bounds.origin
1306 // + point(
1307 // 0.,
1308 // block.row as f32 * layout.position_map.line_height - scroll_top,
1309 // );
1310 // if !matches!(block.style, BlockStyle::Sticky) {
1311 // origin += point(-scroll_left, 0.);
1312 // }
1313 // block.element.paint(origin, visible_bounds, editor, cx);
1314 // }
1315 // }
1316
1317 fn column_pixels(&self, column: usize, cx: &ViewContext<Editor>) -> Pixels {
1318 let style = &self.style;
1319 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1320 let layout = cx
1321 .text_system()
1322 .layout_text(
1323 " ".repeat(column).as_str(),
1324 font_size,
1325 &[TextRun {
1326 len: column,
1327 font: style.text.font(),
1328 color: Hsla::default(),
1329 underline: None,
1330 }],
1331 None,
1332 )
1333 .unwrap();
1334
1335 layout[0].width
1336 }
1337
1338 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &ViewContext<Editor>) -> Pixels {
1339 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1340 self.column_pixels(digit_count, cx)
1341 }
1342
1343 //Folds contained in a hunk are ignored apart from shrinking visual size
1344 //If a fold contains any hunks then that fold line is marked as modified
1345 fn layout_git_gutters(
1346 &self,
1347 display_rows: Range<u32>,
1348 snapshot: &EditorSnapshot,
1349 ) -> Vec<DisplayDiffHunk> {
1350 let buffer_snapshot = &snapshot.buffer_snapshot;
1351
1352 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1353 .to_point(snapshot)
1354 .row;
1355 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1356 .to_point(snapshot)
1357 .row;
1358
1359 buffer_snapshot
1360 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1361 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1362 .dedup()
1363 .collect()
1364 }
1365
1366 fn calculate_relative_line_numbers(
1367 &self,
1368 snapshot: &EditorSnapshot,
1369 rows: &Range<u32>,
1370 relative_to: Option<u32>,
1371 ) -> HashMap<u32, u32> {
1372 let mut relative_rows: HashMap<u32, u32> = Default::default();
1373 let Some(relative_to) = relative_to else {
1374 return relative_rows;
1375 };
1376
1377 let start = rows.start.min(relative_to);
1378 let end = rows.end.max(relative_to);
1379
1380 let buffer_rows = snapshot
1381 .buffer_rows(start)
1382 .take(1 + (end - start) as usize)
1383 .collect::<Vec<_>>();
1384
1385 let head_idx = relative_to - start;
1386 let mut delta = 1;
1387 let mut i = head_idx + 1;
1388 while i < buffer_rows.len() as u32 {
1389 if buffer_rows[i as usize].is_some() {
1390 if rows.contains(&(i + start)) {
1391 relative_rows.insert(i + start, delta);
1392 }
1393 delta += 1;
1394 }
1395 i += 1;
1396 }
1397 delta = 1;
1398 i = head_idx.min(buffer_rows.len() as u32 - 1);
1399 while i > 0 && buffer_rows[i as usize].is_none() {
1400 i -= 1;
1401 }
1402
1403 while i > 0 {
1404 i -= 1;
1405 if buffer_rows[i as usize].is_some() {
1406 if rows.contains(&(i + start)) {
1407 relative_rows.insert(i + start, delta);
1408 }
1409 delta += 1;
1410 }
1411 }
1412
1413 relative_rows
1414 }
1415
1416 fn layout_line_numbers(
1417 &self,
1418 rows: Range<u32>,
1419 active_rows: &BTreeMap<u32, bool>,
1420 newest_selection_head: DisplayPoint,
1421 is_singleton: bool,
1422 snapshot: &EditorSnapshot,
1423 cx: &ViewContext<Editor>,
1424 ) -> (
1425 Vec<Option<gpui::Line>>,
1426 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1427 ) {
1428 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1429 let include_line_numbers = snapshot.mode == EditorMode::Full;
1430 let mut line_number_layouts = Vec::with_capacity(rows.len());
1431 let mut fold_statuses = Vec::with_capacity(rows.len());
1432 let mut line_number = String::new();
1433 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1434 let relative_to = if is_relative {
1435 Some(newest_selection_head.row())
1436 } else {
1437 None
1438 };
1439
1440 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1441
1442 for (ix, row) in snapshot
1443 .buffer_rows(rows.start)
1444 .take((rows.end - rows.start) as usize)
1445 .enumerate()
1446 {
1447 let display_row = rows.start + ix as u32;
1448 let (active, color) = if active_rows.contains_key(&display_row) {
1449 (true, cx.theme().colors().editor_active_line_number)
1450 } else {
1451 (false, cx.theme().colors().editor_line_number)
1452 };
1453 if let Some(buffer_row) = row {
1454 if include_line_numbers {
1455 line_number.clear();
1456 let default_number = buffer_row + 1;
1457 let number = relative_rows
1458 .get(&(ix as u32 + rows.start))
1459 .unwrap_or(&default_number);
1460 write!(&mut line_number, "{}", number).unwrap();
1461 let run = TextRun {
1462 len: line_number.len(),
1463 font: self.style.text.font(),
1464 color,
1465 underline: None,
1466 };
1467 let layout = cx
1468 .text_system()
1469 .layout_text(&line_number, font_size, &[run], None)
1470 .unwrap()
1471 .pop()
1472 .unwrap();
1473 line_number_layouts.push(Some(layout));
1474 fold_statuses.push(
1475 is_singleton
1476 .then(|| {
1477 snapshot
1478 .fold_for_line(buffer_row)
1479 .map(|fold_status| (fold_status, buffer_row, active))
1480 })
1481 .flatten(),
1482 )
1483 }
1484 } else {
1485 fold_statuses.push(None);
1486 line_number_layouts.push(None);
1487 }
1488 }
1489
1490 (line_number_layouts, fold_statuses)
1491 }
1492
1493 fn layout_lines(
1494 &mut self,
1495 rows: Range<u32>,
1496 line_number_layouts: &[Option<Line>],
1497 snapshot: &EditorSnapshot,
1498 cx: &ViewContext<Editor>,
1499 ) -> Vec<LineWithInvisibles> {
1500 if rows.start >= rows.end {
1501 return Vec::new();
1502 }
1503
1504 // When the editor is empty and unfocused, then show the placeholder.
1505 if snapshot.is_empty() {
1506 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1507 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1508 let placeholder_text = snapshot.placeholder_text();
1509 let placeholder_lines = placeholder_text
1510 .as_ref()
1511 .map_or("", AsRef::as_ref)
1512 .split('\n')
1513 .skip(rows.start as usize)
1514 .chain(iter::repeat(""))
1515 .take(rows.len());
1516 placeholder_lines
1517 .map(|line| {
1518 let run = TextRun {
1519 len: line.len(),
1520 font: self.style.text.font(),
1521 color: placeholder_color,
1522 underline: Default::default(),
1523 };
1524 cx.text_system()
1525 .layout_text(line, font_size, &[run], None)
1526 .unwrap()
1527 .pop()
1528 .unwrap()
1529 })
1530 .map(|line| LineWithInvisibles {
1531 line,
1532 invisibles: Vec::new(),
1533 })
1534 .collect()
1535 } else {
1536 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1537 LineWithInvisibles::from_chunks(
1538 chunks,
1539 &self.style.text,
1540 MAX_LINE_LEN,
1541 rows.len() as usize,
1542 line_number_layouts,
1543 snapshot.mode,
1544 cx,
1545 )
1546 }
1547 }
1548
1549 fn compute_layout(
1550 &mut self,
1551 editor: &mut Editor,
1552 cx: &mut ViewContext<'_, Editor>,
1553 mut bounds: Bounds<Pixels>,
1554 ) -> LayoutState {
1555 // let mut size = constraint.max;
1556 // if size.x.is_infinite() {
1557 // unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
1558 // }
1559
1560 let snapshot = editor.snapshot(cx);
1561 let style = self.style.clone();
1562 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1563 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1564 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1565 let em_width = cx
1566 .text_system()
1567 .typographic_bounds(font_id, font_size, 'm')
1568 .unwrap()
1569 .size
1570 .width;
1571 let em_advance = cx
1572 .text_system()
1573 .advance(font_id, font_size, 'm')
1574 .unwrap()
1575 .width;
1576
1577 let gutter_padding;
1578 let gutter_width;
1579 let gutter_margin;
1580 if snapshot.show_gutter {
1581 let descent = cx.text_system().descent(font_id, font_size).unwrap();
1582
1583 let gutter_padding_factor = 3.5;
1584 gutter_padding = (em_width * gutter_padding_factor).round();
1585 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1586 gutter_margin = -descent;
1587 } else {
1588 gutter_padding = Pixels::ZERO;
1589 gutter_width = Pixels::ZERO;
1590 gutter_margin = Pixels::ZERO;
1591 };
1592
1593 let text_width = bounds.size.width - gutter_width;
1594 let overscroll = size(em_width, px(0.));
1595 let snapshot = {
1596 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1597
1598 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1599 let wrap_width = match editor.soft_wrap_mode(cx) {
1600 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1601 SoftWrap::EditorWidth => editor_width,
1602 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1603 };
1604
1605 if editor.set_wrap_width(Some(wrap_width), cx) {
1606 editor.snapshot(cx)
1607 } else {
1608 snapshot
1609 }
1610 };
1611
1612 let wrap_guides = editor
1613 .wrap_guides(cx)
1614 .iter()
1615 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1616 .collect::<SmallVec<[_; 2]>>();
1617
1618 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1619 // todo!("this should happen during layout")
1620 let editor_mode = snapshot.mode;
1621 if let EditorMode::AutoHeight { max_lines } = editor_mode {
1622 todo!()
1623 // size.set_y(
1624 // scroll_height
1625 // .min(constraint.max_along(Axis::Vertical))
1626 // .max(constraint.min_along(Axis::Vertical))
1627 // .max(line_height)
1628 // .min(line_height * max_lines as f32),
1629 // )
1630 } else if let EditorMode::SingleLine = editor_mode {
1631 bounds.size.height = line_height.min(bounds.size.height);
1632 }
1633 // todo!()
1634 // else if size.y.is_infinite() {
1635 // // size.set_y(scroll_height);
1636 // }
1637 //
1638 let gutter_size = size(gutter_width, bounds.size.height);
1639 let text_size = size(text_width, bounds.size.height);
1640
1641 let autoscroll_horizontally =
1642 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1643 let mut snapshot = editor.snapshot(cx);
1644
1645 let scroll_position = snapshot.scroll_position();
1646 // The scroll position is a fractional point, the whole number of which represents
1647 // the top of the window in terms of display rows.
1648 let start_row = scroll_position.y as u32;
1649 let height_in_lines = f32::from(bounds.size.height / line_height);
1650 let max_row = snapshot.max_point().row();
1651
1652 // Add 1 to ensure selections bleed off screen
1653 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1654
1655 let start_anchor = if start_row == 0 {
1656 Anchor::min()
1657 } else {
1658 snapshot
1659 .buffer_snapshot
1660 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1661 };
1662 let end_anchor = if end_row > max_row {
1663 Anchor::max()
1664 } else {
1665 snapshot
1666 .buffer_snapshot
1667 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1668 };
1669
1670 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1671 let mut active_rows = BTreeMap::new();
1672 let mut fold_ranges = Vec::new();
1673 let is_singleton = editor.is_singleton(cx);
1674
1675 let highlighted_rows = editor.highlighted_rows();
1676 let highlighted_ranges = editor.background_highlights_in_range(
1677 start_anchor..end_anchor,
1678 &snapshot.display_snapshot,
1679 cx.theme().colors(),
1680 );
1681
1682 fold_ranges.extend(
1683 snapshot
1684 .folds_in_range(start_anchor..end_anchor)
1685 .map(|anchor| {
1686 let start = anchor.start.to_point(&snapshot.buffer_snapshot);
1687 (
1688 start.row,
1689 start.to_display_point(&snapshot.display_snapshot)
1690 ..anchor.end.to_display_point(&snapshot),
1691 )
1692 }),
1693 );
1694
1695 let mut newest_selection_head = None;
1696
1697 if editor.show_local_selections {
1698 let mut local_selections: Vec<Selection<Point>> = editor
1699 .selections
1700 .disjoint_in_range(start_anchor..end_anchor, cx);
1701 local_selections.extend(editor.selections.pending(cx));
1702 let mut layouts = Vec::new();
1703 let newest = editor.selections.newest(cx);
1704 for selection in local_selections.drain(..) {
1705 let is_empty = selection.start == selection.end;
1706 let is_newest = selection == newest;
1707
1708 let layout = SelectionLayout::new(
1709 selection,
1710 editor.selections.line_mode,
1711 editor.cursor_shape,
1712 &snapshot.display_snapshot,
1713 is_newest,
1714 true,
1715 );
1716 if is_newest {
1717 newest_selection_head = Some(layout.head);
1718 }
1719
1720 for row in cmp::max(layout.active_rows.start, start_row)
1721 ..=cmp::min(layout.active_rows.end, end_row)
1722 {
1723 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1724 *contains_non_empty_selection |= !is_empty;
1725 }
1726 layouts.push(layout);
1727 }
1728
1729 selections.push((style.local_player, layouts));
1730 }
1731
1732 if let Some(collaboration_hub) = &editor.collaboration_hub {
1733 // When following someone, render the local selections in their color.
1734 if let Some(leader_id) = editor.leader_peer_id {
1735 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1736 if let Some(participant_index) = collaboration_hub
1737 .user_participant_indices(cx)
1738 .get(&collaborator.user_id)
1739 {
1740 if let Some((local_selection_style, _)) = selections.first_mut() {
1741 *local_selection_style = cx
1742 .theme()
1743 .players()
1744 .color_for_participant(participant_index.0);
1745 }
1746 }
1747 }
1748 }
1749
1750 let mut remote_selections = HashMap::default();
1751 for selection in snapshot.remote_selections_in_range(
1752 &(start_anchor..end_anchor),
1753 collaboration_hub.as_ref(),
1754 cx,
1755 ) {
1756 let selection_style = if let Some(participant_index) = selection.participant_index {
1757 cx.theme()
1758 .players()
1759 .color_for_participant(participant_index.0)
1760 } else {
1761 cx.theme().players().absent()
1762 };
1763
1764 // Don't re-render the leader's selections, since the local selections
1765 // match theirs.
1766 if Some(selection.peer_id) == editor.leader_peer_id {
1767 continue;
1768 }
1769
1770 remote_selections
1771 .entry(selection.replica_id)
1772 .or_insert((selection_style, Vec::new()))
1773 .1
1774 .push(SelectionLayout::new(
1775 selection.selection,
1776 selection.line_mode,
1777 selection.cursor_shape,
1778 &snapshot.display_snapshot,
1779 false,
1780 false,
1781 ));
1782 }
1783
1784 selections.extend(remote_selections.into_values());
1785 }
1786
1787 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1788 let show_scrollbars = match scrollbar_settings.show {
1789 ShowScrollbar::Auto => {
1790 // Git
1791 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1792 ||
1793 // Selections
1794 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1795 // Scrollmanager
1796 || editor.scroll_manager.scrollbars_visible()
1797 }
1798 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1799 ShowScrollbar::Always => true,
1800 ShowScrollbar::Never => false,
1801 };
1802
1803 let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)> = fold_ranges
1804 .into_iter()
1805 .map(|(id, fold)| {
1806 todo!("folds!")
1807 // let color = self
1808 // .style
1809 // .folds
1810 // .ellipses
1811 // .background
1812 // .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
1813 // .color;
1814
1815 // (id, fold, color)
1816 })
1817 .collect();
1818
1819 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1820 let newest = editor.selections.newest::<Point>(cx);
1821 SelectionLayout::new(
1822 newest,
1823 editor.selections.line_mode,
1824 editor.cursor_shape,
1825 &snapshot.display_snapshot,
1826 true,
1827 true,
1828 )
1829 .head
1830 });
1831
1832 let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
1833 start_row..end_row,
1834 &active_rows,
1835 head_for_relative,
1836 is_singleton,
1837 &snapshot,
1838 cx,
1839 );
1840
1841 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1842
1843 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1844
1845 let mut max_visible_line_width = Pixels::ZERO;
1846 let line_layouts =
1847 self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
1848 for line_with_invisibles in &line_layouts {
1849 if line_with_invisibles.line.width > max_visible_line_width {
1850 max_visible_line_width = line_with_invisibles.line.width;
1851 }
1852 }
1853
1854 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1855 .unwrap()
1856 .width;
1857 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1858 // todo!("blocks")
1859 // let (scroll_width, blocks) = self.layout_blocks(
1860 // start_row..end_row,
1861 // &snapshot,
1862 // size.x,
1863 // scroll_width,
1864 // gutter_padding,
1865 // gutter_width,
1866 // em_width,
1867 // gutter_width + gutter_margin,
1868 // line_height,
1869 // &style,
1870 // &line_layouts,
1871 // editor,
1872 // cx,
1873 // );
1874
1875 let scroll_max = point(
1876 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1877 max_row as f32,
1878 );
1879
1880 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1881
1882 let autoscrolled = if autoscroll_horizontally {
1883 editor.autoscroll_horizontally(
1884 start_row,
1885 text_size.width,
1886 scroll_width,
1887 em_width,
1888 &line_layouts,
1889 cx,
1890 )
1891 } else {
1892 false
1893 };
1894
1895 if clamped || autoscrolled {
1896 snapshot = editor.snapshot(cx);
1897 }
1898
1899 // todo!("context menu")
1900 // let mut context_menu = None;
1901 // let mut code_actions_indicator = None;
1902 // if let Some(newest_selection_head) = newest_selection_head {
1903 // if (start_row..end_row).contains(&newest_selection_head.row()) {
1904 // if editor.context_menu_visible() {
1905 // context_menu =
1906 // editor.render_context_menu(newest_selection_head, style.clone(), cx);
1907 // }
1908
1909 // let active = matches!(
1910 // editor.context_menu.read().as_ref(),
1911 // Some(crate::ContextMenu::CodeActions(_))
1912 // );
1913
1914 // code_actions_indicator = editor
1915 // .render_code_actions_indicator(&style, active, cx)
1916 // .map(|indicator| (newest_selection_head.row(), indicator));
1917 // }
1918 // }
1919
1920 let visible_rows = start_row..start_row + line_layouts.len() as u32;
1921 // todo!("hover")
1922 // let mut hover = editor.hover_state.render(
1923 // &snapshot,
1924 // &style,
1925 // visible_rows,
1926 // editor.workspace.as_ref().map(|(w, _)| w.clone()),
1927 // cx,
1928 // );
1929 // let mode = editor.mode;
1930
1931 // todo!("fold_indicators")
1932 // let mut fold_indicators = editor.render_fold_indicators(
1933 // fold_statuses,
1934 // &style,
1935 // editor.gutter_hovered,
1936 // line_height,
1937 // gutter_margin,
1938 // cx,
1939 // );
1940
1941 // todo!("context_menu")
1942 // if let Some((_, context_menu)) = context_menu.as_mut() {
1943 // context_menu.layout(
1944 // SizeConstraint {
1945 // min: gpui::Point::<Pixels>::zero(),
1946 // max: point(
1947 // cx.window_size().x * 0.7,
1948 // (12. * line_height).min((size.y - line_height) / 2.),
1949 // ),
1950 // },
1951 // editor,
1952 // cx,
1953 // );
1954 // }
1955
1956 // todo!("code actions")
1957 // if let Some((_, indicator)) = code_actions_indicator.as_mut() {
1958 // indicator.layout(
1959 // SizeConstraint::strict_along(
1960 // Axis::Vertical,
1961 // line_height * style.code_actions.vertical_scale,
1962 // ),
1963 // editor,
1964 // cx,
1965 // );
1966 // }
1967
1968 // todo!("fold indicators")
1969 // for fold_indicator in fold_indicators.iter_mut() {
1970 // if let Some(indicator) = fold_indicator.as_mut() {
1971 // indicator.layout(
1972 // SizeConstraint::strict_along(
1973 // Axis::Vertical,
1974 // line_height * style.code_actions.vertical_scale,
1975 // ),
1976 // editor,
1977 // cx,
1978 // );
1979 // }
1980 // }
1981
1982 // todo!("hover popovers")
1983 // if let Some((_, hover_popovers)) = hover.as_mut() {
1984 // for hover_popover in hover_popovers.iter_mut() {
1985 // hover_popover.layout(
1986 // SizeConstraint {
1987 // min: gpui::Point::<Pixels>::zero(),
1988 // max: point(
1989 // (120. * em_width) // Default size
1990 // .min(size.x / 2.) // Shrink to half of the editor width
1991 // .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1992 // (16. * line_height) // Default size
1993 // .min(size.y / 2.) // Shrink to half of the editor height
1994 // .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1995 // ),
1996 // },
1997 // editor,
1998 // cx,
1999 // );
2000 // }
2001 // }
2002
2003 let invisible_symbol_font_size = font_size / 2.;
2004 let tab_invisible = cx
2005 .text_system()
2006 .layout_text(
2007 "→",
2008 invisible_symbol_font_size,
2009 &[TextRun {
2010 len: "→".len(),
2011 font: self.style.text.font(),
2012 color: cx.theme().colors().editor_invisible,
2013 underline: None,
2014 }],
2015 None,
2016 )
2017 .unwrap()
2018 .pop()
2019 .unwrap();
2020 let space_invisible = cx
2021 .text_system()
2022 .layout_text(
2023 "•",
2024 invisible_symbol_font_size,
2025 &[TextRun {
2026 len: "•".len(),
2027 font: self.style.text.font(),
2028 color: cx.theme().colors().editor_invisible,
2029 underline: None,
2030 }],
2031 None,
2032 )
2033 .unwrap()
2034 .pop()
2035 .unwrap();
2036
2037 LayoutState {
2038 mode: editor_mode,
2039 position_map: Arc::new(PositionMap {
2040 size: bounds.size,
2041 scroll_max,
2042 line_layouts,
2043 line_height,
2044 em_width,
2045 em_advance,
2046 snapshot,
2047 }),
2048 visible_display_row_range: start_row..end_row,
2049 wrap_guides,
2050 gutter_size,
2051 gutter_padding,
2052 text_size,
2053 scrollbar_row_range,
2054 show_scrollbars,
2055 is_singleton,
2056 max_row,
2057 gutter_margin,
2058 active_rows,
2059 highlighted_rows,
2060 highlighted_ranges,
2061 fold_ranges,
2062 line_number_layouts,
2063 display_hunks,
2064 // blocks,
2065 selections,
2066 // context_menu,
2067 // code_actions_indicator,
2068 // fold_indicators,
2069 tab_invisible,
2070 space_invisible,
2071 // hover_popovers: hover,
2072 }
2073 }
2074
2075 // #[allow(clippy::too_many_arguments)]
2076 // fn layout_blocks(
2077 // &mut self,
2078 // rows: Range<u32>,
2079 // snapshot: &EditorSnapshot,
2080 // editor_width: f32,
2081 // scroll_width: f32,
2082 // gutter_padding: f32,
2083 // gutter_width: f32,
2084 // em_width: f32,
2085 // text_x: f32,
2086 // line_height: f32,
2087 // style: &EditorStyle,
2088 // line_layouts: &[LineWithInvisibles],
2089 // editor: &mut Editor,
2090 // cx: &mut ViewContext<Editor>,
2091 // ) -> (f32, Vec<BlockLayout>) {
2092 // let mut block_id = 0;
2093 // let scroll_x = snapshot.scroll_anchor.offset.x;
2094 // let (fixed_blocks, non_fixed_blocks) = snapshot
2095 // .blocks_in_range(rows.clone())
2096 // .partition::<Vec<_>, _>(|(_, block)| match block {
2097 // TransformBlock::ExcerptHeader { .. } => false,
2098 // TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2099 // });
2100 // let mut render_block = |block: &TransformBlock, width: f32, block_id: usize| {
2101 // let mut element = match block {
2102 // TransformBlock::Custom(block) => {
2103 // let align_to = block
2104 // .position()
2105 // .to_point(&snapshot.buffer_snapshot)
2106 // .to_display_point(snapshot);
2107 // let anchor_x = text_x
2108 // + if rows.contains(&align_to.row()) {
2109 // line_layouts[(align_to.row() - rows.start) as usize]
2110 // .line
2111 // .x_for_index(align_to.column() as usize)
2112 // } else {
2113 // layout_line(align_to.row(), snapshot, style, cx.text_layout_cache())
2114 // .x_for_index(align_to.column() as usize)
2115 // };
2116
2117 // block.render(&mut BlockContext {
2118 // view_context: cx,
2119 // anchor_x,
2120 // gutter_padding,
2121 // line_height,
2122 // scroll_x,
2123 // gutter_width,
2124 // em_width,
2125 // block_id,
2126 // })
2127 // }
2128 // TransformBlock::ExcerptHeader {
2129 // id,
2130 // buffer,
2131 // range,
2132 // starts_new_buffer,
2133 // ..
2134 // } => {
2135 // let tooltip_style = theme::current(cx).tooltip.clone();
2136 // let include_root = editor
2137 // .project
2138 // .as_ref()
2139 // .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2140 // .unwrap_or_default();
2141 // let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2142 // let jump_path = ProjectPath {
2143 // worktree_id: file.worktree_id(cx),
2144 // path: file.path.clone(),
2145 // };
2146 // let jump_anchor = range
2147 // .primary
2148 // .as_ref()
2149 // .map_or(range.context.start, |primary| primary.start);
2150 // let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2151
2152 // enum JumpIcon {}
2153 // MouseEventHandler::new::<JumpIcon, _>((*id).into(), cx, |state, _| {
2154 // let style = style.jump_icon.style_for(state);
2155 // Svg::new("icons/arrow_up_right.svg")
2156 // .with_color(style.color)
2157 // .constrained()
2158 // .with_width(style.icon_width)
2159 // .aligned()
2160 // .contained()
2161 // .with_style(style.container)
2162 // .constrained()
2163 // .with_width(style.button_width)
2164 // .with_height(style.button_width)
2165 // })
2166 // .with_cursor_style(CursorStyle::PointingHand)
2167 // .on_click(MouseButton::Left, move |_, editor, cx| {
2168 // if let Some(workspace) = editor
2169 // .workspace
2170 // .as_ref()
2171 // .and_then(|(workspace, _)| workspace.upgrade(cx))
2172 // {
2173 // workspace.update(cx, |workspace, cx| {
2174 // Editor::jump(
2175 // workspace,
2176 // jump_path.clone(),
2177 // jump_position,
2178 // jump_anchor,
2179 // cx,
2180 // );
2181 // });
2182 // }
2183 // })
2184 // .with_tooltip::<JumpIcon>(
2185 // (*id).into(),
2186 // "Jump to Buffer".to_string(),
2187 // Some(Box::new(crate::OpenExcerpts)),
2188 // tooltip_style.clone(),
2189 // cx,
2190 // )
2191 // .aligned()
2192 // .flex_float()
2193 // });
2194
2195 // if *starts_new_buffer {
2196 // let editor_font_size = style.text.font_size;
2197 // let style = &style.diagnostic_path_header;
2198 // let font_size = (style.text_scale_factor * editor_font_size).round();
2199
2200 // let path = buffer.resolve_file_path(cx, include_root);
2201 // let mut filename = None;
2202 // let mut parent_path = None;
2203 // // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2204 // if let Some(path) = path {
2205 // filename = path.file_name().map(|f| f.to_string_lossy.to_string());
2206 // parent_path =
2207 // path.parent().map(|p| p.to_string_lossy.to_string() + "/");
2208 // }
2209
2210 // Flex::row()
2211 // .with_child(
2212 // Label::new(
2213 // filename.unwrap_or_else(|| "untitled".to_string()),
2214 // style.filename.text.clone().with_font_size(font_size),
2215 // )
2216 // .contained()
2217 // .with_style(style.filename.container)
2218 // .aligned(),
2219 // )
2220 // .with_children(parent_path.map(|path| {
2221 // Label::new(path, style.path.text.clone().with_font_size(font_size))
2222 // .contained()
2223 // .with_style(style.path.container)
2224 // .aligned()
2225 // }))
2226 // .with_children(jump_icon)
2227 // .contained()
2228 // .with_style(style.container)
2229 // .with_padding_left(gutter_padding)
2230 // .with_padding_right(gutter_padding)
2231 // .expanded()
2232 // .into_any_named("path header block")
2233 // } else {
2234 // let text_style = style.text.clone();
2235 // Flex::row()
2236 // .with_child(Label::new("⋯", text_style))
2237 // .with_children(jump_icon)
2238 // .contained()
2239 // .with_padding_left(gutter_padding)
2240 // .with_padding_right(gutter_padding)
2241 // .expanded()
2242 // .into_any_named("collapsed context")
2243 // }
2244 // }
2245 // };
2246
2247 // element.layout(
2248 // SizeConstraint {
2249 // min: gpui::Point::<Pixels>::zero(),
2250 // max: point(width, block.height() as f32 * line_height),
2251 // },
2252 // editor,
2253 // cx,
2254 // );
2255 // element
2256 // };
2257
2258 // let mut fixed_block_max_width = 0f32;
2259 // let mut blocks = Vec::new();
2260 // for (row, block) in fixed_blocks {
2261 // let element = render_block(block, f32::INFINITY, block_id);
2262 // block_id += 1;
2263 // fixed_block_max_width = fixed_block_max_width.max(element.size().x + em_width);
2264 // blocks.push(BlockLayout {
2265 // row,
2266 // element,
2267 // style: BlockStyle::Fixed,
2268 // });
2269 // }
2270 // for (row, block) in non_fixed_blocks {
2271 // let style = match block {
2272 // TransformBlock::Custom(block) => block.style(),
2273 // TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2274 // };
2275 // let width = match style {
2276 // BlockStyle::Sticky => editor_width,
2277 // BlockStyle::Flex => editor_width
2278 // .max(fixed_block_max_width)
2279 // .max(gutter_width + scroll_width),
2280 // BlockStyle::Fixed => unreachable!(),
2281 // };
2282 // let element = render_block(block, width, block_id);
2283 // block_id += 1;
2284 // blocks.push(BlockLayout {
2285 // row,
2286 // element,
2287 // style,
2288 // });
2289 // }
2290 // (
2291 // scroll_width.max(fixed_block_max_width - gutter_width),
2292 // blocks,
2293 // )
2294 // }
2295
2296 fn paint_mouse_listeners(
2297 &mut self,
2298 bounds: Bounds<Pixels>,
2299 gutter_bounds: Bounds<Pixels>,
2300 text_bounds: Bounds<Pixels>,
2301 position_map: &Arc<PositionMap>,
2302 cx: &mut ViewContext<Editor>,
2303 ) {
2304 cx.on_mouse_event({
2305 let position_map = position_map.clone();
2306 move |editor, event: &ScrollWheelEvent, phase, cx| {
2307 if phase != DispatchPhase::Bubble {
2308 return;
2309 }
2310
2311 if Self::scroll(editor, event, &position_map, bounds, cx) {
2312 cx.stop_propagation();
2313 }
2314 }
2315 });
2316 cx.on_mouse_event({
2317 let position_map = position_map.clone();
2318 move |editor, event: &MouseMoveEvent, phase, cx| {
2319 if phase != DispatchPhase::Bubble {
2320 return;
2321 }
2322
2323 if Self::mouse_moved(editor, event, &position_map, text_bounds, cx) {
2324 cx.stop_propagation()
2325 }
2326 }
2327 });
2328 cx.on_mouse_event({
2329 let position_map = position_map.clone();
2330 move |editor, event: &MouseDownEvent, phase, cx| {
2331 if phase != DispatchPhase::Bubble {
2332 return;
2333 }
2334
2335 if Self::mouse_down(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2336 cx.stop_propagation()
2337 }
2338 }
2339 });
2340 }
2341}
2342
2343#[derive(Debug)]
2344pub struct LineWithInvisibles {
2345 pub line: Line,
2346 invisibles: Vec<Invisible>,
2347}
2348
2349impl LineWithInvisibles {
2350 fn from_chunks<'a>(
2351 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2352 text_style: &TextStyle,
2353 max_line_len: usize,
2354 max_line_count: usize,
2355 line_number_layouts: &[Option<Line>],
2356 editor_mode: EditorMode,
2357 cx: &WindowContext,
2358 ) -> Vec<Self> {
2359 let mut layouts = Vec::with_capacity(max_line_count);
2360 let mut line = String::new();
2361 let mut invisibles = Vec::new();
2362 let mut styles = Vec::new();
2363 let mut non_whitespace_added = false;
2364 let mut row = 0;
2365 let mut line_exceeded_max_len = false;
2366 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2367
2368 for highlighted_chunk in chunks.chain([HighlightedChunk {
2369 chunk: "\n",
2370 style: None,
2371 is_tab: false,
2372 }]) {
2373 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2374 if ix > 0 {
2375 let layout = cx
2376 .text_system()
2377 .layout_text(&line, font_size, &styles, None);
2378 layouts.push(Self {
2379 line: layout.unwrap().pop().unwrap(),
2380 invisibles: invisibles.drain(..).collect(),
2381 });
2382
2383 line.clear();
2384 styles.clear();
2385 row += 1;
2386 line_exceeded_max_len = false;
2387 non_whitespace_added = false;
2388 if row == max_line_count {
2389 return layouts;
2390 }
2391 }
2392
2393 if !line_chunk.is_empty() && !line_exceeded_max_len {
2394 let text_style = if let Some(style) = highlighted_chunk.style {
2395 text_style
2396 .clone()
2397 .highlight(style)
2398 .map(Cow::Owned)
2399 .unwrap_or_else(|_| Cow::Borrowed(text_style))
2400 } else {
2401 Cow::Borrowed(text_style)
2402 };
2403
2404 if line.len() + line_chunk.len() > max_line_len {
2405 let mut chunk_len = max_line_len - line.len();
2406 while !line_chunk.is_char_boundary(chunk_len) {
2407 chunk_len -= 1;
2408 }
2409 line_chunk = &line_chunk[..chunk_len];
2410 line_exceeded_max_len = true;
2411 }
2412
2413 styles.push(TextRun {
2414 len: line_chunk.len(),
2415 font: text_style.font(),
2416 color: text_style.color,
2417 underline: text_style.underline,
2418 });
2419
2420 if editor_mode == EditorMode::Full {
2421 // Line wrap pads its contents with fake whitespaces,
2422 // avoid printing them
2423 let inside_wrapped_string = line_number_layouts
2424 .get(row)
2425 .and_then(|layout| layout.as_ref())
2426 .is_none();
2427 if highlighted_chunk.is_tab {
2428 if non_whitespace_added || !inside_wrapped_string {
2429 invisibles.push(Invisible::Tab {
2430 line_start_offset: line.len(),
2431 });
2432 }
2433 } else {
2434 invisibles.extend(
2435 line_chunk
2436 .chars()
2437 .enumerate()
2438 .filter(|(_, line_char)| {
2439 let is_whitespace = line_char.is_whitespace();
2440 non_whitespace_added |= !is_whitespace;
2441 is_whitespace
2442 && (non_whitespace_added || !inside_wrapped_string)
2443 })
2444 .map(|(whitespace_index, _)| Invisible::Whitespace {
2445 line_offset: line.len() + whitespace_index,
2446 }),
2447 )
2448 }
2449 }
2450
2451 line.push_str(line_chunk);
2452 }
2453 }
2454 }
2455
2456 layouts
2457 }
2458
2459 fn draw(
2460 &self,
2461 layout: &LayoutState,
2462 row: u32,
2463 scroll_top: Pixels,
2464 content_origin: gpui::Point<Pixels>,
2465 scroll_left: Pixels,
2466 whitespace_setting: ShowWhitespaceSetting,
2467 selection_ranges: &[Range<DisplayPoint>],
2468 cx: &mut ViewContext<Editor>,
2469 ) {
2470 let line_height = layout.position_map.line_height;
2471 let line_y = line_height * row as f32 - scroll_top;
2472
2473 self.line.paint(
2474 content_origin + gpui::point(-scroll_left, line_y),
2475 line_height,
2476 cx,
2477 );
2478
2479 self.draw_invisibles(
2480 &selection_ranges,
2481 layout,
2482 content_origin,
2483 scroll_left,
2484 line_y,
2485 row,
2486 line_height,
2487 whitespace_setting,
2488 cx,
2489 );
2490 }
2491
2492 fn draw_invisibles(
2493 &self,
2494 selection_ranges: &[Range<DisplayPoint>],
2495 layout: &LayoutState,
2496 content_origin: gpui::Point<Pixels>,
2497 scroll_left: Pixels,
2498 line_y: Pixels,
2499 row: u32,
2500 line_height: Pixels,
2501 whitespace_setting: ShowWhitespaceSetting,
2502 cx: &mut ViewContext<Editor>,
2503 ) {
2504 let allowed_invisibles_regions = match whitespace_setting {
2505 ShowWhitespaceSetting::None => return,
2506 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2507 ShowWhitespaceSetting::All => None,
2508 };
2509
2510 for invisible in &self.invisibles {
2511 let (&token_offset, invisible_symbol) = match invisible {
2512 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2513 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2514 };
2515
2516 let x_offset = self.line.x_for_index(token_offset);
2517 let invisible_offset =
2518 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2519 let origin =
2520 content_origin + gpui::point(-scroll_left + x_offset + invisible_offset, line_y);
2521
2522 if let Some(allowed_regions) = allowed_invisibles_regions {
2523 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2524 if !allowed_regions
2525 .iter()
2526 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2527 {
2528 continue;
2529 }
2530 }
2531 invisible_symbol.paint(origin, line_height, cx);
2532 }
2533 }
2534}
2535
2536#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2537enum Invisible {
2538 Tab { line_start_offset: usize },
2539 Whitespace { line_offset: usize },
2540}
2541
2542impl Element<Editor> for EditorElement {
2543 type ElementState = ();
2544
2545 fn id(&self) -> Option<gpui::ElementId> {
2546 None
2547 }
2548
2549 fn initialize(
2550 &mut self,
2551 editor: &mut Editor,
2552 element_state: Option<Self::ElementState>,
2553 cx: &mut gpui::ViewContext<Editor>,
2554 ) -> Self::ElementState {
2555 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2556
2557 let dispatch_context = editor.dispatch_context(cx);
2558 cx.with_element_id(cx.view().entity_id(), |global_id, cx| {
2559 cx.with_key_dispatch_context(dispatch_context, |cx| {
2560 cx.with_key_listeners(
2561 [
2562 build_action_listener(Editor::move_left),
2563 build_action_listener(Editor::move_right),
2564 build_action_listener(Editor::move_down),
2565 build_action_listener(Editor::move_up),
2566 // build_action_listener(Editor::new_file), todo!()
2567 // build_action_listener(Editor::new_file_in_direction), todo!()
2568 build_action_listener(Editor::cancel),
2569 build_action_listener(Editor::newline),
2570 build_action_listener(Editor::newline_above),
2571 build_action_listener(Editor::newline_below),
2572 build_action_listener(Editor::backspace),
2573 build_action_listener(Editor::delete),
2574 build_action_listener(Editor::tab),
2575 build_action_listener(Editor::tab_prev),
2576 build_action_listener(Editor::indent),
2577 build_action_listener(Editor::outdent),
2578 build_action_listener(Editor::delete_line),
2579 build_action_listener(Editor::join_lines),
2580 build_action_listener(Editor::sort_lines_case_sensitive),
2581 build_action_listener(Editor::sort_lines_case_insensitive),
2582 build_action_listener(Editor::reverse_lines),
2583 build_action_listener(Editor::shuffle_lines),
2584 build_action_listener(Editor::convert_to_upper_case),
2585 build_action_listener(Editor::convert_to_lower_case),
2586 build_action_listener(Editor::convert_to_title_case),
2587 build_action_listener(Editor::convert_to_snake_case),
2588 build_action_listener(Editor::convert_to_kebab_case),
2589 build_action_listener(Editor::convert_to_upper_camel_case),
2590 build_action_listener(Editor::convert_to_lower_camel_case),
2591 build_action_listener(Editor::delete_to_previous_word_start),
2592 build_action_listener(Editor::delete_to_previous_subword_start),
2593 build_action_listener(Editor::delete_to_next_word_end),
2594 build_action_listener(Editor::delete_to_next_subword_end),
2595 build_action_listener(Editor::delete_to_beginning_of_line),
2596 build_action_listener(Editor::delete_to_end_of_line),
2597 build_action_listener(Editor::cut_to_end_of_line),
2598 build_action_listener(Editor::duplicate_line),
2599 build_action_listener(Editor::move_line_up),
2600 build_action_listener(Editor::move_line_down),
2601 build_action_listener(Editor::transpose),
2602 build_action_listener(Editor::cut),
2603 build_action_listener(Editor::copy),
2604 build_action_listener(Editor::paste),
2605 build_action_listener(Editor::undo),
2606 build_action_listener(Editor::redo),
2607 build_action_listener(Editor::move_page_up),
2608 build_action_listener(Editor::move_page_down),
2609 build_action_listener(Editor::next_screen),
2610 build_action_listener(Editor::scroll_cursor_top),
2611 build_action_listener(Editor::scroll_cursor_center),
2612 build_action_listener(Editor::scroll_cursor_bottom),
2613 build_action_listener(|editor, _: &LineDown, cx| {
2614 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
2615 }),
2616 build_action_listener(|editor, _: &LineUp, cx| {
2617 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
2618 }),
2619 build_action_listener(|editor, _: &HalfPageDown, cx| {
2620 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
2621 }),
2622 build_action_listener(|editor, _: &HalfPageUp, cx| {
2623 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
2624 }),
2625 build_action_listener(|editor, _: &PageDown, cx| {
2626 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
2627 }),
2628 build_action_listener(|editor, _: &PageUp, cx| {
2629 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
2630 }),
2631 build_action_listener(Editor::move_to_previous_word_start),
2632 build_action_listener(Editor::move_to_previous_subword_start),
2633 build_action_listener(Editor::move_to_next_word_end),
2634 build_action_listener(Editor::move_to_next_subword_end),
2635 build_action_listener(Editor::move_to_beginning_of_line),
2636 build_action_listener(Editor::move_to_end_of_line),
2637 build_action_listener(Editor::move_to_start_of_paragraph),
2638 build_action_listener(Editor::move_to_end_of_paragraph),
2639 build_action_listener(Editor::move_to_beginning),
2640 build_action_listener(Editor::move_to_end),
2641 build_action_listener(Editor::select_up),
2642 build_action_listener(Editor::select_down),
2643 build_action_listener(Editor::select_left),
2644 build_action_listener(Editor::select_right),
2645 build_action_listener(Editor::select_to_previous_word_start),
2646 build_action_listener(Editor::select_to_previous_subword_start),
2647 build_action_listener(Editor::select_to_next_word_end),
2648 build_action_listener(Editor::select_to_next_subword_end),
2649 build_action_listener(Editor::select_to_beginning_of_line),
2650 build_action_listener(Editor::select_to_end_of_line),
2651 build_action_listener(Editor::select_to_start_of_paragraph),
2652 build_action_listener(Editor::select_to_end_of_paragraph),
2653 build_action_listener(Editor::select_to_beginning),
2654 build_action_listener(Editor::select_to_end),
2655 build_action_listener(Editor::select_all),
2656 build_action_listener(|editor, action, cx| {
2657 editor.select_all_matches(action, cx).log_err();
2658 }),
2659 build_action_listener(Editor::select_line),
2660 build_action_listener(Editor::split_selection_into_lines),
2661 build_action_listener(Editor::add_selection_above),
2662 build_action_listener(Editor::add_selection_below),
2663 build_action_listener(|editor, action, cx| {
2664 editor.select_next(action, cx).log_err();
2665 }),
2666 build_action_listener(|editor, action, cx| {
2667 editor.select_previous(action, cx).log_err();
2668 }),
2669 build_action_listener(Editor::toggle_comments),
2670 build_action_listener(Editor::select_larger_syntax_node),
2671 build_action_listener(Editor::select_smaller_syntax_node),
2672 build_action_listener(Editor::move_to_enclosing_bracket),
2673 build_action_listener(Editor::undo_selection),
2674 build_action_listener(Editor::redo_selection),
2675 build_action_listener(Editor::go_to_diagnostic),
2676 build_action_listener(Editor::go_to_prev_diagnostic),
2677 build_action_listener(Editor::go_to_hunk),
2678 build_action_listener(Editor::go_to_prev_hunk),
2679 build_action_listener(Editor::go_to_definition),
2680 build_action_listener(Editor::go_to_definition_split),
2681 build_action_listener(Editor::go_to_type_definition),
2682 build_action_listener(Editor::go_to_type_definition_split),
2683 build_action_listener(Editor::fold),
2684 build_action_listener(Editor::fold_at),
2685 build_action_listener(Editor::unfold_lines),
2686 build_action_listener(Editor::unfold_at),
2687 // build_action_listener(Editor::gutter_hover), todo!()
2688 build_action_listener(Editor::fold_selected_ranges),
2689 build_action_listener(Editor::show_completions),
2690 // build_action_listener(Editor::toggle_code_actions), todo!()
2691 // build_action_listener(Editor::open_excerpts), todo!()
2692 build_action_listener(Editor::toggle_soft_wrap),
2693 build_action_listener(Editor::toggle_inlay_hints),
2694 build_action_listener(Editor::reveal_in_finder),
2695 build_action_listener(Editor::copy_path),
2696 build_action_listener(Editor::copy_relative_path),
2697 build_action_listener(Editor::copy_highlight_json),
2698 build_action_listener(|editor, action, cx| {
2699 editor
2700 .format(action, cx)
2701 .map(|task| task.detach_and_log_err(cx));
2702 }),
2703 build_action_listener(Editor::restart_language_server),
2704 build_action_listener(Editor::show_character_palette),
2705 // build_action_listener(Editor::confirm_completion), todo!()
2706 // build_action_listener(Editor::confirm_code_action), todo!()
2707 // build_action_listener(Editor::rename), todo!()
2708 // build_action_listener(Editor::confirm_rename), todo!()
2709 // build_action_listener(Editor::find_all_references), todo!()
2710 build_action_listener(Editor::next_copilot_suggestion),
2711 build_action_listener(Editor::previous_copilot_suggestion),
2712 build_action_listener(Editor::copilot_suggest),
2713 build_key_listener(
2714 move |editor, key_down: &KeyDownEvent, dispatch_context, phase, cx| {
2715 if phase == DispatchPhase::Bubble {
2716 if let KeyMatch::Some(action) = cx.match_keystroke(
2717 &global_id,
2718 &key_down.keystroke,
2719 dispatch_context,
2720 ) {
2721 return Some(action);
2722 }
2723 }
2724
2725 None
2726 },
2727 ),
2728 ],
2729 |cx| cx.with_focus(editor.focus_handle.clone(), |_| {}),
2730 );
2731 })
2732 });
2733 }
2734
2735 fn layout(
2736 &mut self,
2737 editor: &mut Editor,
2738 element_state: &mut Self::ElementState,
2739 cx: &mut gpui::ViewContext<Editor>,
2740 ) -> gpui::LayoutId {
2741 let rem_size = cx.rem_size();
2742 let mut style = Style::default();
2743 style.size.width = relative(1.).into();
2744 style.size.height = match editor.mode {
2745 EditorMode::SingleLine => self.style.text.line_height_in_pixels(cx.rem_size()).into(),
2746 EditorMode::AutoHeight { .. } => todo!(),
2747 EditorMode::Full => relative(1.).into(),
2748 };
2749 cx.request_layout(&style, None)
2750 }
2751
2752 fn paint(
2753 &mut self,
2754 bounds: Bounds<gpui::Pixels>,
2755 editor: &mut Editor,
2756 element_state: &mut Self::ElementState,
2757 cx: &mut gpui::ViewContext<Editor>,
2758 ) {
2759 let layout = self.compute_layout(editor, cx, bounds);
2760 let gutter_bounds = Bounds {
2761 origin: bounds.origin,
2762 size: layout.gutter_size,
2763 };
2764 let text_bounds = Bounds {
2765 origin: gutter_bounds.upper_right(),
2766 size: layout.text_size,
2767 };
2768
2769 if editor.focus_handle.is_focused(cx) {
2770 cx.handle_text_input();
2771 }
2772
2773 cx.with_content_mask(ContentMask { bounds }, |cx| {
2774 self.paint_mouse_listeners(
2775 bounds,
2776 gutter_bounds,
2777 text_bounds,
2778 &layout.position_map,
2779 cx,
2780 );
2781 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2782 if layout.gutter_size.width > Pixels::ZERO {
2783 self.paint_gutter(gutter_bounds, &layout, editor, cx);
2784 }
2785 self.paint_text(text_bounds, &layout, editor, cx);
2786 });
2787 }
2788}
2789
2790// impl EditorElement {
2791// type LayoutState = LayoutState;
2792// type PaintState = ();
2793
2794// fn layout(
2795// &mut self,
2796// constraint: SizeConstraint,
2797// editor: &mut Editor,
2798// cx: &mut ViewContext<Editor>,
2799// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2800// let mut size = constraint.max;
2801// if size.x.is_infinite() {
2802// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2803// }
2804
2805// let snapshot = editor.snapshot(cx);
2806// let style = self.style.clone();
2807
2808// let line_height = (style.text.font_size * style.line_height_scalar).round();
2809
2810// let gutter_padding;
2811// let gutter_width;
2812// let gutter_margin;
2813// if snapshot.show_gutter {
2814// let em_width = style.text.em_width(cx.font_cache());
2815// gutter_padding = (em_width * style.gutter_padding_factor).round();
2816// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2817// gutter_margin = -style.text.descent(cx.font_cache());
2818// } else {
2819// gutter_padding = 0.0;
2820// gutter_width = 0.0;
2821// gutter_margin = 0.0;
2822// };
2823
2824// let text_width = size.x - gutter_width;
2825// let em_width = style.text.em_width(cx.font_cache());
2826// let em_advance = style.text.em_advance(cx.font_cache());
2827// let overscroll = point(em_width, 0.);
2828// let snapshot = {
2829// editor.set_visible_line_count(size.y / line_height, cx);
2830
2831// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2832// let wrap_width = match editor.soft_wrap_mode(cx) {
2833// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2834// SoftWrap::EditorWidth => editor_width,
2835// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2836// };
2837
2838// if editor.set_wrap_width(Some(wrap_width), cx) {
2839// editor.snapshot(cx)
2840// } else {
2841// snapshot
2842// }
2843// };
2844
2845// let wrap_guides = editor
2846// .wrap_guides(cx)
2847// .iter()
2848// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2849// .collect();
2850
2851// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2852// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2853// size.set_y(
2854// scroll_height
2855// .min(constraint.max_along(Axis::Vertical))
2856// .max(constraint.min_along(Axis::Vertical))
2857// .max(line_height)
2858// .min(line_height * max_lines as f32),
2859// )
2860// } else if let EditorMode::SingleLine = snapshot.mode {
2861// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2862// } else if size.y.is_infinite() {
2863// size.set_y(scroll_height);
2864// }
2865// let gutter_size = point(gutter_width, size.y);
2866// let text_size = point(text_width, size.y);
2867
2868// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2869// let mut snapshot = editor.snapshot(cx);
2870
2871// let scroll_position = snapshot.scroll_position();
2872// // The scroll position is a fractional point, the whole number of which represents
2873// // the top of the window in terms of display rows.
2874// let start_row = scroll_position.y as u32;
2875// let height_in_lines = size.y / line_height;
2876// let max_row = snapshot.max_point().row();
2877
2878// // Add 1 to ensure selections bleed off screen
2879// let end_row = 1 + cmp::min(
2880// (scroll_position.y + height_in_lines).ceil() as u32,
2881// max_row,
2882// );
2883
2884// let start_anchor = if start_row == 0 {
2885// Anchor::min()
2886// } else {
2887// snapshot
2888// .buffer_snapshot
2889// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2890// };
2891// let end_anchor = if end_row > max_row {
2892// Anchor::max
2893// } else {
2894// snapshot
2895// .buffer_snapshot
2896// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2897// };
2898
2899// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2900// let mut active_rows = BTreeMap::new();
2901// let mut fold_ranges = Vec::new();
2902// let is_singleton = editor.is_singleton(cx);
2903
2904// let highlighted_rows = editor.highlighted_rows();
2905// let theme = theme::current(cx);
2906// let highlighted_ranges = editor.background_highlights_in_range(
2907// start_anchor..end_anchor,
2908// &snapshot.display_snapshot,
2909// theme.as_ref(),
2910// );
2911
2912// fold_ranges.extend(
2913// snapshot
2914// .folds_in_range(start_anchor..end_anchor)
2915// .map(|anchor| {
2916// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2917// (
2918// start.row,
2919// start.to_display_point(&snapshot.display_snapshot)
2920// ..anchor.end.to_display_point(&snapshot),
2921// )
2922// }),
2923// );
2924
2925// let mut newest_selection_head = None;
2926
2927// if editor.show_local_selections {
2928// let mut local_selections: Vec<Selection<Point>> = editor
2929// .selections
2930// .disjoint_in_range(start_anchor..end_anchor, cx);
2931// local_selections.extend(editor.selections.pending(cx));
2932// let mut layouts = Vec::new();
2933// let newest = editor.selections.newest(cx);
2934// for selection in local_selections.drain(..) {
2935// let is_empty = selection.start == selection.end;
2936// let is_newest = selection == newest;
2937
2938// let layout = SelectionLayout::new(
2939// selection,
2940// editor.selections.line_mode,
2941// editor.cursor_shape,
2942// &snapshot.display_snapshot,
2943// is_newest,
2944// true,
2945// );
2946// if is_newest {
2947// newest_selection_head = Some(layout.head);
2948// }
2949
2950// for row in cmp::max(layout.active_rows.start, start_row)
2951// ..=cmp::min(layout.active_rows.end, end_row)
2952// {
2953// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2954// *contains_non_empty_selection |= !is_empty;
2955// }
2956// layouts.push(layout);
2957// }
2958
2959// selections.push((style.selection, layouts));
2960// }
2961
2962// if let Some(collaboration_hub) = &editor.collaboration_hub {
2963// // When following someone, render the local selections in their color.
2964// if let Some(leader_id) = editor.leader_peer_id {
2965// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2966// if let Some(participant_index) = collaboration_hub
2967// .user_participant_indices(cx)
2968// .get(&collaborator.user_id)
2969// {
2970// if let Some((local_selection_style, _)) = selections.first_mut() {
2971// *local_selection_style =
2972// style.selection_style_for_room_participant(participant_index.0);
2973// }
2974// }
2975// }
2976// }
2977
2978// let mut remote_selections = HashMap::default();
2979// for selection in snapshot.remote_selections_in_range(
2980// &(start_anchor..end_anchor),
2981// collaboration_hub.as_ref(),
2982// cx,
2983// ) {
2984// let selection_style = if let Some(participant_index) = selection.participant_index {
2985// style.selection_style_for_room_participant(participant_index.0)
2986// } else {
2987// style.absent_selection
2988// };
2989
2990// // Don't re-render the leader's selections, since the local selections
2991// // match theirs.
2992// if Some(selection.peer_id) == editor.leader_peer_id {
2993// continue;
2994// }
2995
2996// remote_selections
2997// .entry(selection.replica_id)
2998// .or_insert((selection_style, Vec::new()))
2999// .1
3000// .push(SelectionLayout::new(
3001// selection.selection,
3002// selection.line_mode,
3003// selection.cursor_shape,
3004// &snapshot.display_snapshot,
3005// false,
3006// false,
3007// ));
3008// }
3009
3010// selections.extend(remote_selections.into_values());
3011// }
3012
3013// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
3014// let show_scrollbars = match scrollbar_settings.show {
3015// ShowScrollbar::Auto => {
3016// // Git
3017// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
3018// ||
3019// // Selections
3020// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
3021// // Scrollmanager
3022// || editor.scroll_manager.scrollbars_visible()
3023// }
3024// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
3025// ShowScrollbar::Always => true,
3026// ShowScrollbar::Never => false,
3027// };
3028
3029// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
3030// .into_iter()
3031// .map(|(id, fold)| {
3032// let color = self
3033// .style
3034// .folds
3035// .ellipses
3036// .background
3037// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
3038// .color;
3039
3040// (id, fold, color)
3041// })
3042// .collect();
3043
3044// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
3045// let newest = editor.selections.newest::<Point>(cx);
3046// SelectionLayout::new(
3047// newest,
3048// editor.selections.line_mode,
3049// editor.cursor_shape,
3050// &snapshot.display_snapshot,
3051// true,
3052// true,
3053// )
3054// .head
3055// });
3056
3057// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
3058// start_row..end_row,
3059// &active_rows,
3060// head_for_relative,
3061// is_singleton,
3062// &snapshot,
3063// cx,
3064// );
3065
3066// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
3067
3068// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
3069
3070// let mut max_visible_line_width = 0.0;
3071// let line_layouts =
3072// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
3073// for line_with_invisibles in &line_layouts {
3074// if line_with_invisibles.line.width() > max_visible_line_width {
3075// max_visible_line_width = line_with_invisibles.line.width();
3076// }
3077// }
3078
3079// let style = self.style.clone();
3080// let longest_line_width = layout_line(
3081// snapshot.longest_row(),
3082// &snapshot,
3083// &style,
3084// cx.text_layout_cache(),
3085// )
3086// .width();
3087// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
3088// let em_width = style.text.em_width(cx.font_cache());
3089// let (scroll_width, blocks) = self.layout_blocks(
3090// start_row..end_row,
3091// &snapshot,
3092// size.x,
3093// scroll_width,
3094// gutter_padding,
3095// gutter_width,
3096// em_width,
3097// gutter_width + gutter_margin,
3098// line_height,
3099// &style,
3100// &line_layouts,
3101// editor,
3102// cx,
3103// );
3104
3105// let scroll_max = point(
3106// ((scroll_width - text_size.x) / em_width).max(0.0),
3107// max_row as f32,
3108// );
3109
3110// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3111
3112// let autoscrolled = if autoscroll_horizontally {
3113// editor.autoscroll_horizontally(
3114// start_row,
3115// text_size.x,
3116// scroll_width,
3117// em_width,
3118// &line_layouts,
3119// cx,
3120// )
3121// } else {
3122// false
3123// };
3124
3125// if clamped || autoscrolled {
3126// snapshot = editor.snapshot(cx);
3127// }
3128
3129// let style = editor.style(cx);
3130
3131// let mut context_menu = None;
3132// let mut code_actions_indicator = None;
3133// if let Some(newest_selection_head) = newest_selection_head {
3134// if (start_row..end_row).contains(&newest_selection_head.row()) {
3135// if editor.context_menu_visible() {
3136// context_menu =
3137// editor.render_context_menu(newest_selection_head, style.clone(), cx);
3138// }
3139
3140// let active = matches!(
3141// editor.context_menu.read().as_ref(),
3142// Some(crate::ContextMenu::CodeActions(_))
3143// );
3144
3145// code_actions_indicator = editor
3146// .render_code_actions_indicator(&style, active, cx)
3147// .map(|indicator| (newest_selection_head.row(), indicator));
3148// }
3149// }
3150
3151// let visible_rows = start_row..start_row + line_layouts.len() as u32;
3152// let mut hover = editor.hover_state.render(
3153// &snapshot,
3154// &style,
3155// visible_rows,
3156// editor.workspace.as_ref().map(|(w, _)| w.clone()),
3157// cx,
3158// );
3159// let mode = editor.mode;
3160
3161// let mut fold_indicators = editor.render_fold_indicators(
3162// fold_statuses,
3163// &style,
3164// editor.gutter_hovered,
3165// line_height,
3166// gutter_margin,
3167// cx,
3168// );
3169
3170// if let Some((_, context_menu)) = context_menu.as_mut() {
3171// context_menu.layout(
3172// SizeConstraint {
3173// min: gpui::Point::<Pixels>::zero(),
3174// max: point(
3175// cx.window_size().x * 0.7,
3176// (12. * line_height).min((size.y - line_height) / 2.),
3177// ),
3178// },
3179// editor,
3180// cx,
3181// );
3182// }
3183
3184// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
3185// indicator.layout(
3186// SizeConstraint::strict_along(
3187// Axis::Vertical,
3188// line_height * style.code_actions.vertical_scale,
3189// ),
3190// editor,
3191// cx,
3192// );
3193// }
3194
3195// for fold_indicator in fold_indicators.iter_mut() {
3196// if let Some(indicator) = fold_indicator.as_mut() {
3197// indicator.layout(
3198// SizeConstraint::strict_along(
3199// Axis::Vertical,
3200// line_height * style.code_actions.vertical_scale,
3201// ),
3202// editor,
3203// cx,
3204// );
3205// }
3206// }
3207
3208// if let Some((_, hover_popovers)) = hover.as_mut() {
3209// for hover_popover in hover_popovers.iter_mut() {
3210// hover_popover.layout(
3211// SizeConstraint {
3212// min: gpui::Point::<Pixels>::zero(),
3213// max: point(
3214// (120. * em_width) // Default size
3215// .min(size.x / 2.) // Shrink to half of the editor width
3216// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3217// (16. * line_height) // Default size
3218// .min(size.y / 2.) // Shrink to half of the editor height
3219// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3220// ),
3221// },
3222// editor,
3223// cx,
3224// );
3225// }
3226// }
3227
3228// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
3229// let invisible_symbol_style = RunStyle {
3230// color: self.style.whitespace,
3231// font_id: self.style.text.font_id,
3232// underline: Default::default(),
3233// };
3234
3235// (
3236// size,
3237// LayoutState {
3238// mode,
3239// position_map: Arc::new(PositionMap {
3240// size,
3241// scroll_max,
3242// line_layouts,
3243// line_height,
3244// em_width,
3245// em_advance,
3246// snapshot,
3247// }),
3248// visible_display_row_range: start_row..end_row,
3249// wrap_guides,
3250// gutter_size,
3251// gutter_padding,
3252// text_size,
3253// scrollbar_row_range,
3254// show_scrollbars,
3255// is_singleton,
3256// max_row,
3257// gutter_margin,
3258// active_rows,
3259// highlighted_rows,
3260// highlighted_ranges,
3261// fold_ranges,
3262// line_number_layouts,
3263// display_hunks,
3264// blocks,
3265// selections,
3266// context_menu,
3267// code_actions_indicator,
3268// fold_indicators,
3269// tab_invisible: cx.text_layout_cache().layout_str(
3270// "→",
3271// invisible_symbol_font_size,
3272// &[("→".len(), invisible_symbol_style)],
3273// ),
3274// space_invisible: cx.text_layout_cache().layout_str(
3275// "•",
3276// invisible_symbol_font_size,
3277// &[("•".len(), invisible_symbol_style)],
3278// ),
3279// hover_popovers: hover,
3280// },
3281// )
3282// }
3283
3284// fn paint(
3285// &mut self,
3286// bounds: Bounds<Pixels>,
3287// visible_bounds: Bounds<Pixels>,
3288// layout: &mut Self::LayoutState,
3289// editor: &mut Editor,
3290// cx: &mut ViewContext<Editor>,
3291// ) -> Self::PaintState {
3292// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
3293// cx.scene().push_layer(Some(visible_bounds));
3294
3295// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
3296// let text_bounds = Bounds::<Pixels>::new(
3297// bounds.origin + point(layout.gutter_size.x, 0.0),
3298// layout.text_size,
3299// );
3300
3301// Self::attach_mouse_handlers(
3302// &layout.position_map,
3303// layout.hover_popovers.is_some(),
3304// visible_bounds,
3305// text_bounds,
3306// gutter_bounds,
3307// bounds,
3308// cx,
3309// );
3310
3311// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3312// if layout.gutter_size.x > 0. {
3313// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3314// }
3315// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3316
3317// cx.scene().push_layer(Some(bounds));
3318// if !layout.blocks.is_empty {
3319// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3320// }
3321// self.paint_scrollbar(bounds, layout, &editor, cx);
3322// cx.scene().pop_layer();
3323// cx.scene().pop_layer();
3324// }
3325
3326// fn rect_for_text_range(
3327// &self,
3328// range_utf16: Range<usize>,
3329// bounds: Bounds<Pixels>,
3330// _: Bounds<Pixels>,
3331// layout: &Self::LayoutState,
3332// _: &Self::PaintState,
3333// _: &Editor,
3334// _: &ViewContext<Editor>,
3335// ) -> Option<Bounds<Pixels>> {
3336// let text_bounds = Bounds::<Pixels>::new(
3337// bounds.origin + point(layout.gutter_size.x, 0.0),
3338// layout.text_size,
3339// );
3340// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3341// let scroll_position = layout.position_map.snapshot.scroll_position();
3342// let start_row = scroll_position.y as u32;
3343// let scroll_top = scroll_position.y * layout.position_map.line_height;
3344// let scroll_left = scroll_position.x * layout.position_map.em_width;
3345
3346// let range_start = OffsetUtf16(range_utf16.start)
3347// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3348// if range_start.row() < start_row {
3349// return None;
3350// }
3351
3352// let line = &layout
3353// .position_map
3354// .line_layouts
3355// .get((range_start.row() - start_row) as usize)?
3356// .line;
3357// let range_start_x = line.x_for_index(range_start.column() as usize);
3358// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3359// Some(Bounds::<Pixels>::new(
3360// content_origin
3361// + point(
3362// range_start_x,
3363// range_start_y + layout.position_map.line_height,
3364// )
3365// - point(scroll_left, scroll_top),
3366// point(
3367// layout.position_map.em_width,
3368// layout.position_map.line_height,
3369// ),
3370// ))
3371// }
3372
3373// fn debug(
3374// &self,
3375// bounds: Bounds<Pixels>,
3376// _: &Self::LayoutState,
3377// _: &Self::PaintState,
3378// _: &Editor,
3379// _: &ViewContext<Editor>,
3380// ) -> json::Value {
3381// json!({
3382// "type": "BufferElement",
3383// "bounds": bounds.to_json()
3384// })
3385// }
3386// }
3387
3388type BufferRow = u32;
3389
3390pub struct LayoutState {
3391 position_map: Arc<PositionMap>,
3392 gutter_size: Size<Pixels>,
3393 gutter_padding: Pixels,
3394 gutter_margin: Pixels,
3395 text_size: gpui::Size<Pixels>,
3396 mode: EditorMode,
3397 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3398 visible_display_row_range: Range<u32>,
3399 active_rows: BTreeMap<u32, bool>,
3400 highlighted_rows: Option<Range<u32>>,
3401 line_number_layouts: Vec<Option<gpui::Line>>,
3402 display_hunks: Vec<DisplayDiffHunk>,
3403 // blocks: Vec<BlockLayout>,
3404 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3405 fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)>,
3406 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3407 scrollbar_row_range: Range<f32>,
3408 show_scrollbars: bool,
3409 is_singleton: bool,
3410 max_row: u32,
3411 // context_menu: Option<(DisplayPoint, AnyElement<Editor>)>,
3412 // code_actions_indicator: Option<(u32, AnyElement<Editor>)>,
3413 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement<Editor>>)>,
3414 // fold_indicators: Vec<Option<AnyElement<Editor>>>,
3415 tab_invisible: Line,
3416 space_invisible: Line,
3417}
3418
3419struct PositionMap {
3420 size: Size<Pixels>,
3421 line_height: Pixels,
3422 scroll_max: gpui::Point<f32>,
3423 em_width: Pixels,
3424 em_advance: Pixels,
3425 line_layouts: Vec<LineWithInvisibles>,
3426 snapshot: EditorSnapshot,
3427}
3428
3429#[derive(Debug, Copy, Clone)]
3430pub struct PointForPosition {
3431 pub previous_valid: DisplayPoint,
3432 pub next_valid: DisplayPoint,
3433 pub exact_unclipped: DisplayPoint,
3434 pub column_overshoot_after_line_end: u32,
3435}
3436
3437impl PointForPosition {
3438 #[cfg(test)]
3439 pub fn valid(valid: DisplayPoint) -> Self {
3440 Self {
3441 previous_valid: valid,
3442 next_valid: valid,
3443 exact_unclipped: valid,
3444 column_overshoot_after_line_end: 0,
3445 }
3446 }
3447
3448 pub fn as_valid(&self) -> Option<DisplayPoint> {
3449 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3450 Some(self.previous_valid)
3451 } else {
3452 None
3453 }
3454 }
3455}
3456
3457impl PositionMap {
3458 fn point_for_position(
3459 &self,
3460 text_bounds: Bounds<Pixels>,
3461 position: gpui::Point<Pixels>,
3462 ) -> PointForPosition {
3463 let scroll_position = self.snapshot.scroll_position();
3464 let position = position - text_bounds.origin;
3465 let y = position.y.max(px(0.)).min(self.size.width);
3466 let x = position.x + (scroll_position.x * self.em_width);
3467 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3468
3469 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3470 .line_layouts
3471 .get(row as usize - scroll_position.y as usize)
3472 .map(|&LineWithInvisibles { ref line, .. }| line)
3473 {
3474 if let Some(ix) = line.index_for_x(x) {
3475 (ix as u32, px(0.))
3476 } else {
3477 (line.len as u32, px(0.).max(x - line.width))
3478 }
3479 } else {
3480 (0, x)
3481 };
3482
3483 let mut exact_unclipped = DisplayPoint::new(row, column);
3484 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3485 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3486
3487 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance).into();
3488 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3489 PointForPosition {
3490 previous_valid,
3491 next_valid,
3492 exact_unclipped,
3493 column_overshoot_after_line_end,
3494 }
3495 }
3496}
3497
3498struct BlockLayout {
3499 row: u32,
3500 element: AnyElement<Editor>,
3501 style: BlockStyle,
3502}
3503
3504fn layout_line(
3505 row: u32,
3506 snapshot: &EditorSnapshot,
3507 style: &EditorStyle,
3508 cx: &WindowContext,
3509) -> Result<Line> {
3510 let mut line = snapshot.line(row);
3511
3512 if line.len() > MAX_LINE_LEN {
3513 let mut len = MAX_LINE_LEN;
3514 while !line.is_char_boundary(len) {
3515 len -= 1;
3516 }
3517
3518 line.truncate(len);
3519 }
3520
3521 Ok(cx
3522 .text_system()
3523 .layout_text(
3524 &line,
3525 style.text.font_size.to_pixels(cx.rem_size()),
3526 &[TextRun {
3527 len: snapshot.line_len(row) as usize,
3528 font: style.text.font(),
3529 color: Hsla::default(),
3530 underline: None,
3531 }],
3532 None,
3533 )?
3534 .pop()
3535 .unwrap())
3536}
3537
3538#[derive(Debug)]
3539pub struct Cursor {
3540 origin: gpui::Point<Pixels>,
3541 block_width: Pixels,
3542 line_height: Pixels,
3543 color: Hsla,
3544 shape: CursorShape,
3545 block_text: Option<Line>,
3546}
3547
3548impl Cursor {
3549 pub fn new(
3550 origin: gpui::Point<Pixels>,
3551 block_width: Pixels,
3552 line_height: Pixels,
3553 color: Hsla,
3554 shape: CursorShape,
3555 block_text: Option<Line>,
3556 ) -> Cursor {
3557 Cursor {
3558 origin,
3559 block_width,
3560 line_height,
3561 color,
3562 shape,
3563 block_text,
3564 }
3565 }
3566
3567 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3568 Bounds {
3569 origin: self.origin + origin,
3570 size: size(self.block_width, self.line_height),
3571 }
3572 }
3573
3574 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3575 let bounds = match self.shape {
3576 CursorShape::Bar => Bounds {
3577 origin: self.origin + origin,
3578 size: size(px(2.0), self.line_height),
3579 },
3580 CursorShape::Block | CursorShape::Hollow => Bounds {
3581 origin: self.origin + origin,
3582 size: size(self.block_width, self.line_height),
3583 },
3584 CursorShape::Underscore => Bounds {
3585 origin: self.origin
3586 + origin
3587 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3588 size: size(self.block_width, px(2.0)),
3589 },
3590 };
3591
3592 //Draw background or border quad
3593 if matches!(self.shape, CursorShape::Hollow) {
3594 cx.paint_quad(
3595 bounds,
3596 Corners::default(),
3597 transparent_black(),
3598 Edges::all(px(1.)),
3599 self.color,
3600 );
3601 } else {
3602 cx.paint_quad(
3603 bounds,
3604 Corners::default(),
3605 self.color,
3606 Edges::default(),
3607 transparent_black(),
3608 );
3609 }
3610
3611 if let Some(block_text) = &self.block_text {
3612 block_text.paint(self.origin + origin, self.line_height, cx);
3613 }
3614 }
3615
3616 pub fn shape(&self) -> CursorShape {
3617 self.shape
3618 }
3619}
3620
3621#[derive(Debug)]
3622pub struct HighlightedRange {
3623 pub start_y: Pixels,
3624 pub line_height: Pixels,
3625 pub lines: Vec<HighlightedRangeLine>,
3626 pub color: Hsla,
3627 pub corner_radius: Pixels,
3628}
3629
3630#[derive(Debug)]
3631pub struct HighlightedRangeLine {
3632 pub start_x: Pixels,
3633 pub end_x: Pixels,
3634}
3635
3636impl HighlightedRange {
3637 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3638 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3639 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3640 self.paint_lines(
3641 self.start_y + self.line_height,
3642 &self.lines[1..],
3643 bounds,
3644 cx,
3645 );
3646 } else {
3647 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3648 }
3649 }
3650
3651 fn paint_lines(
3652 &self,
3653 start_y: Pixels,
3654 lines: &[HighlightedRangeLine],
3655 bounds: Bounds<Pixels>,
3656 cx: &mut WindowContext,
3657 ) {
3658 if lines.is_empty() {
3659 return;
3660 }
3661
3662 let first_line = lines.first().unwrap();
3663 let last_line = lines.last().unwrap();
3664
3665 let first_top_left = point(first_line.start_x, start_y);
3666 let first_top_right = point(first_line.end_x, start_y);
3667
3668 let curve_height = point(Pixels::ZERO, self.corner_radius);
3669 let curve_width = |start_x: Pixels, end_x: Pixels| {
3670 let max = (end_x - start_x) / 2.;
3671 let width = if max < self.corner_radius {
3672 max
3673 } else {
3674 self.corner_radius
3675 };
3676
3677 point(width, Pixels::ZERO)
3678 };
3679
3680 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3681 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3682 path.curve_to(first_top_right + curve_height, first_top_right);
3683
3684 let mut iter = lines.iter().enumerate().peekable();
3685 while let Some((ix, line)) = iter.next() {
3686 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3687
3688 if let Some((_, next_line)) = iter.peek() {
3689 let next_top_right = point(next_line.end_x, bottom_right.y);
3690
3691 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3692 Ordering::Equal => {
3693 path.line_to(bottom_right);
3694 }
3695 Ordering::Less => {
3696 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3697 path.line_to(bottom_right - curve_height);
3698 if self.corner_radius > Pixels::ZERO {
3699 path.curve_to(bottom_right - curve_width, bottom_right);
3700 }
3701 path.line_to(next_top_right + curve_width);
3702 if self.corner_radius > Pixels::ZERO {
3703 path.curve_to(next_top_right + curve_height, next_top_right);
3704 }
3705 }
3706 Ordering::Greater => {
3707 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3708 path.line_to(bottom_right - curve_height);
3709 if self.corner_radius > Pixels::ZERO {
3710 path.curve_to(bottom_right + curve_width, bottom_right);
3711 }
3712 path.line_to(next_top_right - curve_width);
3713 if self.corner_radius > Pixels::ZERO {
3714 path.curve_to(next_top_right + curve_height, next_top_right);
3715 }
3716 }
3717 }
3718 } else {
3719 let curve_width = curve_width(line.start_x, line.end_x);
3720 path.line_to(bottom_right - curve_height);
3721 if self.corner_radius > Pixels::ZERO {
3722 path.curve_to(bottom_right - curve_width, bottom_right);
3723 }
3724
3725 let bottom_left = point(line.start_x, bottom_right.y);
3726 path.line_to(bottom_left + curve_width);
3727 if self.corner_radius > Pixels::ZERO {
3728 path.curve_to(bottom_left - curve_height, bottom_left);
3729 }
3730 }
3731 }
3732
3733 if first_line.start_x > last_line.start_x {
3734 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3735 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3736 path.line_to(second_top_left + curve_height);
3737 if self.corner_radius > Pixels::ZERO {
3738 path.curve_to(second_top_left + curve_width, second_top_left);
3739 }
3740 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3741 path.line_to(first_bottom_left - curve_width);
3742 if self.corner_radius > Pixels::ZERO {
3743 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3744 }
3745 }
3746
3747 path.line_to(first_top_left + curve_height);
3748 if self.corner_radius > Pixels::ZERO {
3749 path.curve_to(first_top_left + top_curve_width, first_top_left);
3750 }
3751 path.line_to(first_top_right - top_curve_width);
3752
3753 cx.paint_path(path, self.color);
3754 }
3755}
3756
3757// fn range_to_bounds(
3758// range: &Range<DisplayPoint>,
3759// content_origin: gpui::Point<Pixels>,
3760// scroll_left: f32,
3761// scroll_top: f32,
3762// visible_row_range: &Range<u32>,
3763// line_end_overshoot: f32,
3764// position_map: &PositionMap,
3765// ) -> impl Iterator<Item = Bounds<Pixels>> {
3766// let mut bounds: SmallVec<[Bounds<Pixels>; 1]> = SmallVec::new();
3767
3768// if range.start == range.end {
3769// return bounds.into_iter();
3770// }
3771
3772// let start_row = visible_row_range.start;
3773// let end_row = visible_row_range.end;
3774
3775// let row_range = if range.end.column() == 0 {
3776// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3777// } else {
3778// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
3779// };
3780
3781// let first_y =
3782// content_origin.y + row_range.start as f32 * position_map.line_height - scroll_top;
3783
3784// for (idx, row) in row_range.enumerate() {
3785// let line_layout = &position_map.line_layouts[(row - start_row) as usize].line;
3786
3787// let start_x = if row == range.start.row() {
3788// content_origin.x + line_layout.x_for_index(range.start.column() as usize)
3789// - scroll_left
3790// } else {
3791// content_origin.x - scroll_left
3792// };
3793
3794// let end_x = if row == range.end.row() {
3795// content_origin.x + line_layout.x_for_index(range.end.column() as usize) - scroll_left
3796// } else {
3797// content_origin.x + line_layout.width() + line_end_overshoot - scroll_left
3798// };
3799
3800// bounds.push(Bounds::<Pixels>::from_points(
3801// point(start_x, first_y + position_map.line_height * idx as f32),
3802// point(end_x, first_y + position_map.line_height * (idx + 1) as f32),
3803// ))
3804// }
3805
3806// bounds.into_iter()
3807// }
3808
3809pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3810 (delta.pow(1.5) / 100.0).into()
3811}
3812
3813fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3814 (delta.pow(1.2) / 300.0).into()
3815}
3816
3817// #[cfg(test)]
3818// mod tests {
3819// use super::*;
3820// use crate::{
3821// display_map::{BlockDisposition, BlockProperties},
3822// editor_tests::{init_test, update_test_language_settings},
3823// Editor, MultiBuffer,
3824// };
3825// use gpui::TestAppContext;
3826// use language::language_settings;
3827// use log::info;
3828// use std::{num::NonZeroU32, sync::Arc};
3829// use util::test::sample_text;
3830
3831// #[gpui::test]
3832// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3833// init_test(cx, |_| {});
3834// let editor = cx
3835// .add_window(|cx| {
3836// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3837// Editor::new(EditorMode::Full, buffer, None, None, cx)
3838// })
3839// .root(cx);
3840// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3841
3842// let layouts = editor.update(cx, |editor, cx| {
3843// let snapshot = editor.snapshot(cx);
3844// element
3845// .layout_line_numbers(
3846// 0..6,
3847// &Default::default(),
3848// DisplayPoint::new(0, 0),
3849// false,
3850// &snapshot,
3851// cx,
3852// )
3853// .0
3854// });
3855// assert_eq!(layouts.len(), 6);
3856
3857// let relative_rows = editor.update(cx, |editor, cx| {
3858// let snapshot = editor.snapshot(cx);
3859// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3860// });
3861// assert_eq!(relative_rows[&0], 3);
3862// assert_eq!(relative_rows[&1], 2);
3863// assert_eq!(relative_rows[&2], 1);
3864// // current line has no relative number
3865// assert_eq!(relative_rows[&4], 1);
3866// assert_eq!(relative_rows[&5], 2);
3867
3868// // works if cursor is before screen
3869// let relative_rows = editor.update(cx, |editor, cx| {
3870// let snapshot = editor.snapshot(cx);
3871
3872// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3873// });
3874// assert_eq!(relative_rows.len(), 3);
3875// assert_eq!(relative_rows[&3], 2);
3876// assert_eq!(relative_rows[&4], 3);
3877// assert_eq!(relative_rows[&5], 4);
3878
3879// // works if cursor is after screen
3880// let relative_rows = editor.update(cx, |editor, cx| {
3881// let snapshot = editor.snapshot(cx);
3882
3883// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3884// });
3885// assert_eq!(relative_rows.len(), 3);
3886// assert_eq!(relative_rows[&0], 5);
3887// assert_eq!(relative_rows[&1], 4);
3888// assert_eq!(relative_rows[&2], 3);
3889// }
3890
3891// #[gpui::test]
3892// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3893// init_test(cx, |_| {});
3894
3895// let editor = cx
3896// .add_window(|cx| {
3897// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3898// Editor::new(EditorMode::Full, buffer, None, None, cx)
3899// })
3900// .root(cx);
3901// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3902// let (_, state) = editor.update(cx, |editor, cx| {
3903// editor.cursor_shape = CursorShape::Block;
3904// editor.change_selections(None, cx, |s| {
3905// s.select_ranges([
3906// Point::new(0, 0)..Point::new(1, 0),
3907// Point::new(3, 2)..Point::new(3, 3),
3908// Point::new(5, 6)..Point::new(6, 0),
3909// ]);
3910// });
3911// element.layout(
3912// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3913// editor,
3914// cx,
3915// )
3916// });
3917// assert_eq!(state.selections.len(), 1);
3918// let local_selections = &state.selections[0].1;
3919// assert_eq!(local_selections.len(), 3);
3920// // moves cursor back one line
3921// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3922// assert_eq!(
3923// local_selections[0].range,
3924// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3925// );
3926
3927// // moves cursor back one column
3928// assert_eq!(
3929// local_selections[1].range,
3930// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3931// );
3932// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3933
3934// // leaves cursor on the max point
3935// assert_eq!(
3936// local_selections[2].range,
3937// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3938// );
3939// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3940
3941// // active lines does not include 1 (even though the range of the selection does)
3942// assert_eq!(
3943// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3944// vec![0, 3, 5, 6]
3945// );
3946
3947// // multi-buffer support
3948// // in DisplayPoint co-ordinates, this is what we're dealing with:
3949// // 0: [[file
3950// // 1: header]]
3951// // 2: aaaaaa
3952// // 3: bbbbbb
3953// // 4: cccccc
3954// // 5:
3955// // 6: ...
3956// // 7: ffffff
3957// // 8: gggggg
3958// // 9: hhhhhh
3959// // 10:
3960// // 11: [[file
3961// // 12: header]]
3962// // 13: bbbbbb
3963// // 14: cccccc
3964// // 15: dddddd
3965// let editor = cx
3966// .add_window(|cx| {
3967// let buffer = MultiBuffer::build_multi(
3968// [
3969// (
3970// &(sample_text(8, 6, 'a') + "\n"),
3971// vec![
3972// Point::new(0, 0)..Point::new(3, 0),
3973// Point::new(4, 0)..Point::new(7, 0),
3974// ],
3975// ),
3976// (
3977// &(sample_text(8, 6, 'a') + "\n"),
3978// vec![Point::new(1, 0)..Point::new(3, 0)],
3979// ),
3980// ],
3981// cx,
3982// );
3983// Editor::new(EditorMode::Full, buffer, None, None, cx)
3984// })
3985// .root(cx);
3986// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3987// let (_, state) = editor.update(cx, |editor, cx| {
3988// editor.cursor_shape = CursorShape::Block;
3989// editor.change_selections(None, cx, |s| {
3990// s.select_display_ranges([
3991// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3992// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3993// ]);
3994// });
3995// element.layout(
3996// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3997// editor,
3998// cx,
3999// )
4000// });
4001
4002// assert_eq!(state.selections.len(), 1);
4003// let local_selections = &state.selections[0].1;
4004// assert_eq!(local_selections.len(), 2);
4005
4006// // moves cursor on excerpt boundary back a line
4007// // and doesn't allow selection to bleed through
4008// assert_eq!(
4009// local_selections[0].range,
4010// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
4011// );
4012// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
4013
4014// // moves cursor on buffer boundary back two lines
4015// // and doesn't allow selection to bleed through
4016// assert_eq!(
4017// local_selections[1].range,
4018// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
4019// );
4020// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
4021// }
4022
4023// #[gpui::test]
4024// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
4025// init_test(cx, |_| {});
4026
4027// let editor = cx
4028// .add_window(|cx| {
4029// let buffer = MultiBuffer::build_simple("", cx);
4030// Editor::new(EditorMode::Full, buffer, None, None, cx)
4031// })
4032// .root(cx);
4033
4034// editor.update(cx, |editor, cx| {
4035// editor.set_placeholder_text("hello", cx);
4036// editor.insert_blocks(
4037// [BlockProperties {
4038// style: BlockStyle::Fixed,
4039// disposition: BlockDisposition::Above,
4040// height: 3,
4041// position: Anchor::min(),
4042// render: Arc::new(|_| Empty::new().into_any),
4043// }],
4044// None,
4045// cx,
4046// );
4047
4048// // Blur the editor so that it displays placeholder text.
4049// cx.blur();
4050// });
4051
4052// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
4053// let (size, mut state) = editor.update(cx, |editor, cx| {
4054// element.layout(
4055// SizeConstraint::new(point(500., 500.), point(500., 500.)),
4056// editor,
4057// cx,
4058// )
4059// });
4060
4061// assert_eq!(state.position_map.line_layouts.len(), 4);
4062// assert_eq!(
4063// state
4064// .line_number_layouts
4065// .iter()
4066// .map(Option::is_some)
4067// .collect::<Vec<_>>(),
4068// &[false, false, false, true]
4069// );
4070
4071// // Don't panic.
4072// let bounds = Bounds::<Pixels>::new(Default::default(), size);
4073// editor.update(cx, |editor, cx| {
4074// element.paint(bounds, bounds, &mut state, editor, cx);
4075// });
4076// }
4077
4078// #[gpui::test]
4079// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
4080// const TAB_SIZE: u32 = 4;
4081
4082// let input_text = "\t \t|\t| a b";
4083// let expected_invisibles = vec![
4084// Invisible::Tab {
4085// line_start_offset: 0,
4086// },
4087// Invisible::Whitespace {
4088// line_offset: TAB_SIZE as usize,
4089// },
4090// Invisible::Tab {
4091// line_start_offset: TAB_SIZE as usize + 1,
4092// },
4093// Invisible::Tab {
4094// line_start_offset: TAB_SIZE as usize * 2 + 1,
4095// },
4096// Invisible::Whitespace {
4097// line_offset: TAB_SIZE as usize * 3 + 1,
4098// },
4099// Invisible::Whitespace {
4100// line_offset: TAB_SIZE as usize * 3 + 3,
4101// },
4102// ];
4103// assert_eq!(
4104// expected_invisibles.len(),
4105// input_text
4106// .chars()
4107// .filter(|initial_char| initial_char.is_whitespace())
4108// .count(),
4109// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4110// );
4111
4112// init_test(cx, |s| {
4113// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4114// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
4115// });
4116
4117// let actual_invisibles =
4118// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
4119
4120// assert_eq!(expected_invisibles, actual_invisibles);
4121// }
4122
4123// #[gpui::test]
4124// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
4125// init_test(cx, |s| {
4126// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4127// s.defaults.tab_size = NonZeroU32::new(4);
4128// });
4129
4130// for editor_mode_without_invisibles in [
4131// EditorMode::SingleLine,
4132// EditorMode::AutoHeight { max_lines: 100 },
4133// ] {
4134// let invisibles = collect_invisibles_from_new_editor(
4135// cx,
4136// editor_mode_without_invisibles,
4137// "\t\t\t| | a b",
4138// 500.0,
4139// );
4140// assert!(invisibles.is_empty,
4141// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4142// }
4143// }
4144
4145// #[gpui::test]
4146// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4147// let tab_size = 4;
4148// let input_text = "a\tbcd ".repeat(9);
4149// let repeated_invisibles = [
4150// Invisible::Tab {
4151// line_start_offset: 1,
4152// },
4153// Invisible::Whitespace {
4154// line_offset: tab_size as usize + 3,
4155// },
4156// Invisible::Whitespace {
4157// line_offset: tab_size as usize + 4,
4158// },
4159// Invisible::Whitespace {
4160// line_offset: tab_size as usize + 5,
4161// },
4162// ];
4163// let expected_invisibles = std::iter::once(repeated_invisibles)
4164// .cycle()
4165// .take(9)
4166// .flatten()
4167// .collect::<Vec<_>>();
4168// assert_eq!(
4169// expected_invisibles.len(),
4170// input_text
4171// .chars()
4172// .filter(|initial_char| initial_char.is_whitespace())
4173// .count(),
4174// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4175// );
4176// info!("Expected invisibles: {expected_invisibles:?}");
4177
4178// init_test(cx, |_| {});
4179
4180// // Put the same string with repeating whitespace pattern into editors of various size,
4181// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4182// let resize_step = 10.0;
4183// let mut editor_width = 200.0;
4184// while editor_width <= 1000.0 {
4185// update_test_language_settings(cx, |s| {
4186// s.defaults.tab_size = NonZeroU32::new(tab_size);
4187// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4188// s.defaults.preferred_line_length = Some(editor_width as u32);
4189// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4190// });
4191
4192// let actual_invisibles =
4193// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
4194
4195// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4196// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4197// let mut i = 0;
4198// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4199// i = actual_index;
4200// match expected_invisibles.get(i) {
4201// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4202// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4203// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4204// _ => {
4205// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4206// }
4207// },
4208// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4209// }
4210// }
4211// let missing_expected_invisibles = &expected_invisibles[i + 1..];
4212// assert!(
4213// missing_expected_invisibles.is_empty,
4214// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4215// );
4216
4217// editor_width += resize_step;
4218// }
4219// }
4220
4221// fn collect_invisibles_from_new_editor(
4222// cx: &mut TestAppContext,
4223// editor_mode: EditorMode,
4224// input_text: &str,
4225// editor_width: f32,
4226// ) -> Vec<Invisible> {
4227// info!(
4228// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
4229// );
4230// let editor = cx
4231// .add_window(|cx| {
4232// let buffer = MultiBuffer::build_simple(&input_text, cx);
4233// Editor::new(editor_mode, buffer, None, None, cx)
4234// })
4235// .root(cx);
4236
4237// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
4238// let (_, layout_state) = editor.update(cx, |editor, cx| {
4239// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4240// editor.set_wrap_width(Some(editor_width), cx);
4241
4242// element.layout(
4243// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
4244// editor,
4245// cx,
4246// )
4247// });
4248
4249// layout_state
4250// .position_map
4251// .line_layouts
4252// .iter()
4253// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
4254// .flatten()
4255// .cloned()
4256// .collect()
4257// }
4258// }
4259
4260fn build_key_listener<T: 'static>(
4261 listener: impl Fn(
4262 &mut Editor,
4263 &T,
4264 &[&DispatchContext],
4265 DispatchPhase,
4266 &mut ViewContext<Editor>,
4267 ) -> Option<Box<dyn Action>>
4268 + 'static,
4269) -> (TypeId, KeyListener<Editor>) {
4270 (
4271 TypeId::of::<T>(),
4272 Box::new(move |editor, event, dispatch_context, phase, cx| {
4273 let key_event = event.downcast_ref::<T>()?;
4274 listener(editor, key_event, dispatch_context, phase, cx)
4275 }),
4276 )
4277}
4278
4279fn build_action_listener<T: Action>(
4280 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4281) -> (TypeId, KeyListener<Editor>) {
4282 build_key_listener(move |editor, action: &T, dispatch_context, phase, cx| {
4283 if phase == DispatchPhase::Bubble {
4284 listener(editor, action, cx);
4285 }
4286 None
4287 })
4288}