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