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 mut 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 bounds.size.height = line_height.min(bounds.size.height);
1677 }
1678 // todo!()
1679 // else if size.y.is_infinite() {
1680 // // size.set_y(scroll_height);
1681 // }
1682 //
1683 let gutter_size = size(gutter_width, bounds.size.height);
1684 let text_size = size(text_width, bounds.size.height);
1685
1686 let autoscroll_horizontally =
1687 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1688 let mut snapshot = editor.snapshot(cx);
1689
1690 let scroll_position = snapshot.scroll_position();
1691 // The scroll position is a fractional point, the whole number of which represents
1692 // the top of the window in terms of display rows.
1693 let start_row = scroll_position.y as u32;
1694 let height_in_lines = f32::from(bounds.size.height / line_height);
1695 let max_row = snapshot.max_point().row();
1696
1697 // Add 1 to ensure selections bleed off screen
1698 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1699
1700 let start_anchor = if start_row == 0 {
1701 Anchor::min()
1702 } else {
1703 snapshot
1704 .buffer_snapshot
1705 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1706 };
1707 let end_anchor = if end_row > max_row {
1708 Anchor::max()
1709 } else {
1710 snapshot
1711 .buffer_snapshot
1712 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1713 };
1714
1715 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1716 let mut active_rows = BTreeMap::new();
1717 let mut fold_ranges = Vec::new();
1718 let is_singleton = editor.is_singleton(cx);
1719
1720 let highlighted_rows = editor.highlighted_rows();
1721 let highlighted_ranges = editor.background_highlights_in_range(
1722 start_anchor..end_anchor,
1723 &snapshot.display_snapshot,
1724 cx.theme().colors(),
1725 );
1726
1727 fold_ranges.extend(
1728 snapshot
1729 .folds_in_range(start_anchor..end_anchor)
1730 .map(|anchor| {
1731 let start = anchor.start.to_point(&snapshot.buffer_snapshot);
1732 (
1733 start.row,
1734 start.to_display_point(&snapshot.display_snapshot)
1735 ..anchor.end.to_display_point(&snapshot),
1736 )
1737 }),
1738 );
1739
1740 let mut newest_selection_head = None;
1741
1742 if editor.show_local_selections {
1743 let mut local_selections: Vec<Selection<Point>> = editor
1744 .selections
1745 .disjoint_in_range(start_anchor..end_anchor, cx);
1746 local_selections.extend(editor.selections.pending(cx));
1747 let mut layouts = Vec::new();
1748 let newest = editor.selections.newest(cx);
1749 for selection in local_selections.drain(..) {
1750 let is_empty = selection.start == selection.end;
1751 let is_newest = selection == newest;
1752
1753 let layout = SelectionLayout::new(
1754 selection,
1755 editor.selections.line_mode,
1756 editor.cursor_shape,
1757 &snapshot.display_snapshot,
1758 is_newest,
1759 true,
1760 );
1761 if is_newest {
1762 newest_selection_head = Some(layout.head);
1763 }
1764
1765 for row in cmp::max(layout.active_rows.start, start_row)
1766 ..=cmp::min(layout.active_rows.end, end_row)
1767 {
1768 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1769 *contains_non_empty_selection |= !is_empty;
1770 }
1771 layouts.push(layout);
1772 }
1773
1774 selections.push((style.local_player, layouts));
1775 }
1776
1777 if let Some(collaboration_hub) = &editor.collaboration_hub {
1778 // When following someone, render the local selections in their color.
1779 if let Some(leader_id) = editor.leader_peer_id {
1780 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1781 if let Some(participant_index) = collaboration_hub
1782 .user_participant_indices(cx)
1783 .get(&collaborator.user_id)
1784 {
1785 if let Some((local_selection_style, _)) = selections.first_mut() {
1786 *local_selection_style = cx
1787 .theme()
1788 .players()
1789 .color_for_participant(participant_index.0);
1790 }
1791 }
1792 }
1793 }
1794
1795 let mut remote_selections = HashMap::default();
1796 for selection in snapshot.remote_selections_in_range(
1797 &(start_anchor..end_anchor),
1798 collaboration_hub.as_ref(),
1799 cx,
1800 ) {
1801 let selection_style = if let Some(participant_index) = selection.participant_index {
1802 cx.theme()
1803 .players()
1804 .color_for_participant(participant_index.0)
1805 } else {
1806 cx.theme().players().absent()
1807 };
1808
1809 // Don't re-render the leader's selections, since the local selections
1810 // match theirs.
1811 if Some(selection.peer_id) == editor.leader_peer_id {
1812 continue;
1813 }
1814
1815 remote_selections
1816 .entry(selection.replica_id)
1817 .or_insert((selection_style, Vec::new()))
1818 .1
1819 .push(SelectionLayout::new(
1820 selection.selection,
1821 selection.line_mode,
1822 selection.cursor_shape,
1823 &snapshot.display_snapshot,
1824 false,
1825 false,
1826 ));
1827 }
1828
1829 selections.extend(remote_selections.into_values());
1830 }
1831
1832 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1833 let show_scrollbars = match scrollbar_settings.show {
1834 ShowScrollbar::Auto => {
1835 // Git
1836 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1837 ||
1838 // Selections
1839 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1840 // Scrollmanager
1841 || editor.scroll_manager.scrollbars_visible()
1842 }
1843 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1844 ShowScrollbar::Always => true,
1845 ShowScrollbar::Never => false,
1846 };
1847
1848 let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)> = fold_ranges
1849 .into_iter()
1850 .map(|(id, fold)| {
1851 todo!("folds!")
1852 // let color = self
1853 // .style
1854 // .folds
1855 // .ellipses
1856 // .background
1857 // .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
1858 // .color;
1859
1860 // (id, fold, color)
1861 })
1862 .collect();
1863
1864 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1865 let newest = editor.selections.newest::<Point>(cx);
1866 SelectionLayout::new(
1867 newest,
1868 editor.selections.line_mode,
1869 editor.cursor_shape,
1870 &snapshot.display_snapshot,
1871 true,
1872 true,
1873 )
1874 .head
1875 });
1876
1877 let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
1878 start_row..end_row,
1879 &active_rows,
1880 head_for_relative,
1881 is_singleton,
1882 &snapshot,
1883 cx,
1884 );
1885
1886 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1887
1888 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1889
1890 let mut max_visible_line_width = Pixels::ZERO;
1891 let line_layouts =
1892 self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
1893 for line_with_invisibles in &line_layouts {
1894 if line_with_invisibles.line.width > max_visible_line_width {
1895 max_visible_line_width = line_with_invisibles.line.width;
1896 }
1897 }
1898
1899 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1900 .unwrap()
1901 .width;
1902 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1903 // todo!("blocks")
1904 // let (scroll_width, blocks) = self.layout_blocks(
1905 // start_row..end_row,
1906 // &snapshot,
1907 // size.x,
1908 // scroll_width,
1909 // gutter_padding,
1910 // gutter_width,
1911 // em_width,
1912 // gutter_width + gutter_margin,
1913 // line_height,
1914 // &style,
1915 // &line_layouts,
1916 // editor,
1917 // cx,
1918 // );
1919
1920 let scroll_max = point(
1921 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1922 max_row as f32,
1923 );
1924
1925 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1926
1927 let autoscrolled = if autoscroll_horizontally {
1928 editor.autoscroll_horizontally(
1929 start_row,
1930 text_size.width,
1931 scroll_width,
1932 em_width,
1933 &line_layouts,
1934 cx,
1935 )
1936 } else {
1937 false
1938 };
1939
1940 if clamped || autoscrolled {
1941 snapshot = editor.snapshot(cx);
1942 }
1943
1944 // todo!("context menu")
1945 // let mut context_menu = None;
1946 // let mut code_actions_indicator = None;
1947 // if let Some(newest_selection_head) = newest_selection_head {
1948 // if (start_row..end_row).contains(&newest_selection_head.row()) {
1949 // if editor.context_menu_visible() {
1950 // context_menu =
1951 // editor.render_context_menu(newest_selection_head, style.clone(), cx);
1952 // }
1953
1954 // let active = matches!(
1955 // editor.context_menu.read().as_ref(),
1956 // Some(crate::ContextMenu::CodeActions(_))
1957 // );
1958
1959 // code_actions_indicator = editor
1960 // .render_code_actions_indicator(&style, active, cx)
1961 // .map(|indicator| (newest_selection_head.row(), indicator));
1962 // }
1963 // }
1964
1965 let visible_rows = start_row..start_row + line_layouts.len() as u32;
1966 // todo!("hover")
1967 // let mut hover = editor.hover_state.render(
1968 // &snapshot,
1969 // &style,
1970 // visible_rows,
1971 // editor.workspace.as_ref().map(|(w, _)| w.clone()),
1972 // cx,
1973 // );
1974 // let mode = editor.mode;
1975
1976 // todo!("fold_indicators")
1977 // let mut fold_indicators = editor.render_fold_indicators(
1978 // fold_statuses,
1979 // &style,
1980 // editor.gutter_hovered,
1981 // line_height,
1982 // gutter_margin,
1983 // cx,
1984 // );
1985
1986 // todo!("context_menu")
1987 // if let Some((_, context_menu)) = context_menu.as_mut() {
1988 // context_menu.layout(
1989 // SizeConstraint {
1990 // min: gpui::Point::<Pixels>::zero(),
1991 // max: point(
1992 // cx.window_size().x * 0.7,
1993 // (12. * line_height).min((size.y - line_height) / 2.),
1994 // ),
1995 // },
1996 // editor,
1997 // cx,
1998 // );
1999 // }
2000
2001 // todo!("code actions")
2002 // if let Some((_, indicator)) = code_actions_indicator.as_mut() {
2003 // indicator.layout(
2004 // SizeConstraint::strict_along(
2005 // Axis::Vertical,
2006 // line_height * style.code_actions.vertical_scale,
2007 // ),
2008 // editor,
2009 // cx,
2010 // );
2011 // }
2012
2013 // todo!("fold indicators")
2014 // for fold_indicator in fold_indicators.iter_mut() {
2015 // if let Some(indicator) = fold_indicator.as_mut() {
2016 // indicator.layout(
2017 // SizeConstraint::strict_along(
2018 // Axis::Vertical,
2019 // line_height * style.code_actions.vertical_scale,
2020 // ),
2021 // editor,
2022 // cx,
2023 // );
2024 // }
2025 // }
2026
2027 // todo!("hover popovers")
2028 // if let Some((_, hover_popovers)) = hover.as_mut() {
2029 // for hover_popover in hover_popovers.iter_mut() {
2030 // hover_popover.layout(
2031 // SizeConstraint {
2032 // min: gpui::Point::<Pixels>::zero(),
2033 // max: point(
2034 // (120. * em_width) // Default size
2035 // .min(size.x / 2.) // Shrink to half of the editor width
2036 // .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2037 // (16. * line_height) // Default size
2038 // .min(size.y / 2.) // Shrink to half of the editor height
2039 // .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2040 // ),
2041 // },
2042 // editor,
2043 // cx,
2044 // );
2045 // }
2046 // }
2047
2048 let invisible_symbol_font_size = font_size / 2.;
2049 let tab_invisible = cx
2050 .text_system()
2051 .layout_text(
2052 "→",
2053 invisible_symbol_font_size,
2054 &[TextRun {
2055 len: "→".len(),
2056 font: self.style.text.font(),
2057 color: cx.theme().colors().editor_invisible,
2058 underline: None,
2059 }],
2060 None,
2061 )
2062 .unwrap()
2063 .pop()
2064 .unwrap();
2065 let space_invisible = cx
2066 .text_system()
2067 .layout_text(
2068 "•",
2069 invisible_symbol_font_size,
2070 &[TextRun {
2071 len: "•".len(),
2072 font: self.style.text.font(),
2073 color: cx.theme().colors().editor_invisible,
2074 underline: None,
2075 }],
2076 None,
2077 )
2078 .unwrap()
2079 .pop()
2080 .unwrap();
2081
2082 LayoutState {
2083 mode: editor_mode,
2084 position_map: Arc::new(PositionMap {
2085 size: bounds.size,
2086 scroll_max,
2087 line_layouts,
2088 line_height,
2089 em_width,
2090 em_advance,
2091 snapshot,
2092 }),
2093 visible_display_row_range: start_row..end_row,
2094 wrap_guides,
2095 gutter_size,
2096 gutter_padding,
2097 text_size,
2098 scrollbar_row_range,
2099 show_scrollbars,
2100 is_singleton,
2101 max_row,
2102 gutter_margin,
2103 active_rows,
2104 highlighted_rows,
2105 highlighted_ranges,
2106 fold_ranges,
2107 line_number_layouts,
2108 display_hunks,
2109 // blocks,
2110 selections,
2111 // context_menu,
2112 // code_actions_indicator,
2113 // fold_indicators,
2114 tab_invisible,
2115 space_invisible,
2116 // hover_popovers: hover,
2117 }
2118 }
2119
2120 // #[allow(clippy::too_many_arguments)]
2121 // fn layout_blocks(
2122 // &mut self,
2123 // rows: Range<u32>,
2124 // snapshot: &EditorSnapshot,
2125 // editor_width: f32,
2126 // scroll_width: f32,
2127 // gutter_padding: f32,
2128 // gutter_width: f32,
2129 // em_width: f32,
2130 // text_x: f32,
2131 // line_height: f32,
2132 // style: &EditorStyle,
2133 // line_layouts: &[LineWithInvisibles],
2134 // editor: &mut Editor,
2135 // cx: &mut ViewContext<Editor>,
2136 // ) -> (f32, Vec<BlockLayout>) {
2137 // let mut block_id = 0;
2138 // let scroll_x = snapshot.scroll_anchor.offset.x;
2139 // let (fixed_blocks, non_fixed_blocks) = snapshot
2140 // .blocks_in_range(rows.clone())
2141 // .partition::<Vec<_>, _>(|(_, block)| match block {
2142 // TransformBlock::ExcerptHeader { .. } => false,
2143 // TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2144 // });
2145 // let mut render_block = |block: &TransformBlock, width: f32, block_id: usize| {
2146 // let mut element = match block {
2147 // TransformBlock::Custom(block) => {
2148 // let align_to = block
2149 // .position()
2150 // .to_point(&snapshot.buffer_snapshot)
2151 // .to_display_point(snapshot);
2152 // let anchor_x = text_x
2153 // + if rows.contains(&align_to.row()) {
2154 // line_layouts[(align_to.row() - rows.start) as usize]
2155 // .line
2156 // .x_for_index(align_to.column() as usize)
2157 // } else {
2158 // layout_line(align_to.row(), snapshot, style, cx.text_layout_cache())
2159 // .x_for_index(align_to.column() as usize)
2160 // };
2161
2162 // block.render(&mut BlockContext {
2163 // view_context: cx,
2164 // anchor_x,
2165 // gutter_padding,
2166 // line_height,
2167 // scroll_x,
2168 // gutter_width,
2169 // em_width,
2170 // block_id,
2171 // })
2172 // }
2173 // TransformBlock::ExcerptHeader {
2174 // id,
2175 // buffer,
2176 // range,
2177 // starts_new_buffer,
2178 // ..
2179 // } => {
2180 // let tooltip_style = theme::current(cx).tooltip.clone();
2181 // let include_root = editor
2182 // .project
2183 // .as_ref()
2184 // .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2185 // .unwrap_or_default();
2186 // let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2187 // let jump_path = ProjectPath {
2188 // worktree_id: file.worktree_id(cx),
2189 // path: file.path.clone(),
2190 // };
2191 // let jump_anchor = range
2192 // .primary
2193 // .as_ref()
2194 // .map_or(range.context.start, |primary| primary.start);
2195 // let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2196
2197 // enum JumpIcon {}
2198 // MouseEventHandler::new::<JumpIcon, _>((*id).into(), cx, |state, _| {
2199 // let style = style.jump_icon.style_for(state);
2200 // Svg::new("icons/arrow_up_right.svg")
2201 // .with_color(style.color)
2202 // .constrained()
2203 // .with_width(style.icon_width)
2204 // .aligned()
2205 // .contained()
2206 // .with_style(style.container)
2207 // .constrained()
2208 // .with_width(style.button_width)
2209 // .with_height(style.button_width)
2210 // })
2211 // .with_cursor_style(CursorStyle::PointingHand)
2212 // .on_click(MouseButton::Left, move |_, editor, cx| {
2213 // if let Some(workspace) = editor
2214 // .workspace
2215 // .as_ref()
2216 // .and_then(|(workspace, _)| workspace.upgrade(cx))
2217 // {
2218 // workspace.update(cx, |workspace, cx| {
2219 // Editor::jump(
2220 // workspace,
2221 // jump_path.clone(),
2222 // jump_position,
2223 // jump_anchor,
2224 // cx,
2225 // );
2226 // });
2227 // }
2228 // })
2229 // .with_tooltip::<JumpIcon>(
2230 // (*id).into(),
2231 // "Jump to Buffer".to_string(),
2232 // Some(Box::new(crate::OpenExcerpts)),
2233 // tooltip_style.clone(),
2234 // cx,
2235 // )
2236 // .aligned()
2237 // .flex_float()
2238 // });
2239
2240 // if *starts_new_buffer {
2241 // let editor_font_size = style.text.font_size;
2242 // let style = &style.diagnostic_path_header;
2243 // let font_size = (style.text_scale_factor * editor_font_size).round();
2244
2245 // let path = buffer.resolve_file_path(cx, include_root);
2246 // let mut filename = None;
2247 // let mut parent_path = None;
2248 // // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2249 // if let Some(path) = path {
2250 // filename = path.file_name().map(|f| f.to_string_lossy.to_string());
2251 // parent_path =
2252 // path.parent().map(|p| p.to_string_lossy.to_string() + "/");
2253 // }
2254
2255 // Flex::row()
2256 // .with_child(
2257 // Label::new(
2258 // filename.unwrap_or_else(|| "untitled".to_string()),
2259 // style.filename.text.clone().with_font_size(font_size),
2260 // )
2261 // .contained()
2262 // .with_style(style.filename.container)
2263 // .aligned(),
2264 // )
2265 // .with_children(parent_path.map(|path| {
2266 // Label::new(path, style.path.text.clone().with_font_size(font_size))
2267 // .contained()
2268 // .with_style(style.path.container)
2269 // .aligned()
2270 // }))
2271 // .with_children(jump_icon)
2272 // .contained()
2273 // .with_style(style.container)
2274 // .with_padding_left(gutter_padding)
2275 // .with_padding_right(gutter_padding)
2276 // .expanded()
2277 // .into_any_named("path header block")
2278 // } else {
2279 // let text_style = style.text.clone();
2280 // Flex::row()
2281 // .with_child(Label::new("⋯", text_style))
2282 // .with_children(jump_icon)
2283 // .contained()
2284 // .with_padding_left(gutter_padding)
2285 // .with_padding_right(gutter_padding)
2286 // .expanded()
2287 // .into_any_named("collapsed context")
2288 // }
2289 // }
2290 // };
2291
2292 // element.layout(
2293 // SizeConstraint {
2294 // min: gpui::Point::<Pixels>::zero(),
2295 // max: point(width, block.height() as f32 * line_height),
2296 // },
2297 // editor,
2298 // cx,
2299 // );
2300 // element
2301 // };
2302
2303 // let mut fixed_block_max_width = 0f32;
2304 // let mut blocks = Vec::new();
2305 // for (row, block) in fixed_blocks {
2306 // let element = render_block(block, f32::INFINITY, block_id);
2307 // block_id += 1;
2308 // fixed_block_max_width = fixed_block_max_width.max(element.size().x + em_width);
2309 // blocks.push(BlockLayout {
2310 // row,
2311 // element,
2312 // style: BlockStyle::Fixed,
2313 // });
2314 // }
2315 // for (row, block) in non_fixed_blocks {
2316 // let style = match block {
2317 // TransformBlock::Custom(block) => block.style(),
2318 // TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2319 // };
2320 // let width = match style {
2321 // BlockStyle::Sticky => editor_width,
2322 // BlockStyle::Flex => editor_width
2323 // .max(fixed_block_max_width)
2324 // .max(gutter_width + scroll_width),
2325 // BlockStyle::Fixed => unreachable!(),
2326 // };
2327 // let element = render_block(block, width, block_id);
2328 // block_id += 1;
2329 // blocks.push(BlockLayout {
2330 // row,
2331 // element,
2332 // style,
2333 // });
2334 // }
2335 // (
2336 // scroll_width.max(fixed_block_max_width - gutter_width),
2337 // blocks,
2338 // )
2339 // }
2340}
2341
2342#[derive(Debug)]
2343pub struct LineWithInvisibles {
2344 pub line: Line,
2345 invisibles: Vec<Invisible>,
2346}
2347
2348impl LineWithInvisibles {
2349 fn from_chunks<'a>(
2350 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2351 text_style: &TextStyle,
2352 max_line_len: usize,
2353 max_line_count: usize,
2354 line_number_layouts: &[Option<Line>],
2355 editor_mode: EditorMode,
2356 cx: &WindowContext,
2357 ) -> Vec<Self> {
2358 let mut layouts = Vec::with_capacity(max_line_count);
2359 let mut line = String::new();
2360 let mut invisibles = Vec::new();
2361 let mut styles = Vec::new();
2362 let mut non_whitespace_added = false;
2363 let mut row = 0;
2364 let mut line_exceeded_max_len = false;
2365 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2366
2367 for highlighted_chunk in chunks.chain([HighlightedChunk {
2368 chunk: "\n",
2369 style: None,
2370 is_tab: false,
2371 }]) {
2372 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2373 if ix > 0 {
2374 let layout = cx
2375 .text_system()
2376 .layout_text(&line, font_size, &styles, None);
2377 layouts.push(Self {
2378 line: layout.unwrap().pop().unwrap(),
2379 invisibles: invisibles.drain(..).collect(),
2380 });
2381
2382 line.clear();
2383 styles.clear();
2384 row += 1;
2385 line_exceeded_max_len = false;
2386 non_whitespace_added = false;
2387 if row == max_line_count {
2388 return layouts;
2389 }
2390 }
2391
2392 if !line_chunk.is_empty() && !line_exceeded_max_len {
2393 let text_style = if let Some(style) = highlighted_chunk.style {
2394 text_style
2395 .clone()
2396 .highlight(style)
2397 .map(Cow::Owned)
2398 .unwrap_or_else(|_| Cow::Borrowed(text_style))
2399 } else {
2400 Cow::Borrowed(text_style)
2401 };
2402
2403 if line.len() + line_chunk.len() > max_line_len {
2404 let mut chunk_len = max_line_len - line.len();
2405 while !line_chunk.is_char_boundary(chunk_len) {
2406 chunk_len -= 1;
2407 }
2408 line_chunk = &line_chunk[..chunk_len];
2409 line_exceeded_max_len = true;
2410 }
2411
2412 styles.push(TextRun {
2413 len: line_chunk.len(),
2414 font: text_style.font(),
2415 color: text_style.color,
2416 underline: text_style.underline,
2417 });
2418
2419 if editor_mode == EditorMode::Full {
2420 // Line wrap pads its contents with fake whitespaces,
2421 // avoid printing them
2422 let inside_wrapped_string = line_number_layouts
2423 .get(row)
2424 .and_then(|layout| layout.as_ref())
2425 .is_none();
2426 if highlighted_chunk.is_tab {
2427 if non_whitespace_added || !inside_wrapped_string {
2428 invisibles.push(Invisible::Tab {
2429 line_start_offset: line.len(),
2430 });
2431 }
2432 } else {
2433 invisibles.extend(
2434 line_chunk
2435 .chars()
2436 .enumerate()
2437 .filter(|(_, line_char)| {
2438 let is_whitespace = line_char.is_whitespace();
2439 non_whitespace_added |= !is_whitespace;
2440 is_whitespace
2441 && (non_whitespace_added || !inside_wrapped_string)
2442 })
2443 .map(|(whitespace_index, _)| Invisible::Whitespace {
2444 line_offset: line.len() + whitespace_index,
2445 }),
2446 )
2447 }
2448 }
2449
2450 line.push_str(line_chunk);
2451 }
2452 }
2453 }
2454
2455 layouts
2456 }
2457
2458 fn draw(
2459 &self,
2460 layout: &LayoutState,
2461 row: u32,
2462 scroll_top: Pixels,
2463 content_origin: gpui::Point<Pixels>,
2464 scroll_left: Pixels,
2465 whitespace_setting: ShowWhitespaceSetting,
2466 selection_ranges: &[Range<DisplayPoint>],
2467 cx: &mut ViewContext<Editor>,
2468 ) {
2469 let line_height = layout.position_map.line_height;
2470 let line_y = line_height * row as f32 - scroll_top;
2471
2472 self.line.paint(
2473 content_origin + gpui::point(-scroll_left, line_y),
2474 line_height,
2475 cx,
2476 );
2477
2478 self.draw_invisibles(
2479 &selection_ranges,
2480 layout,
2481 content_origin,
2482 scroll_left,
2483 line_y,
2484 row,
2485 line_height,
2486 whitespace_setting,
2487 cx,
2488 );
2489 }
2490
2491 fn draw_invisibles(
2492 &self,
2493 selection_ranges: &[Range<DisplayPoint>],
2494 layout: &LayoutState,
2495 content_origin: gpui::Point<Pixels>,
2496 scroll_left: Pixels,
2497 line_y: Pixels,
2498 row: u32,
2499 line_height: Pixels,
2500 whitespace_setting: ShowWhitespaceSetting,
2501 cx: &mut ViewContext<Editor>,
2502 ) {
2503 let allowed_invisibles_regions = match whitespace_setting {
2504 ShowWhitespaceSetting::None => return,
2505 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2506 ShowWhitespaceSetting::All => None,
2507 };
2508
2509 for invisible in &self.invisibles {
2510 let (&token_offset, invisible_symbol) = match invisible {
2511 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2512 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2513 };
2514
2515 let x_offset = self.line.x_for_index(token_offset);
2516 let invisible_offset =
2517 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2518 let origin =
2519 content_origin + gpui::point(-scroll_left + x_offset + invisible_offset, line_y);
2520
2521 if let Some(allowed_regions) = allowed_invisibles_regions {
2522 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2523 if !allowed_regions
2524 .iter()
2525 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2526 {
2527 continue;
2528 }
2529 }
2530 invisible_symbol.paint(origin, line_height, cx);
2531 }
2532 }
2533}
2534
2535#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2536enum Invisible {
2537 Tab { line_start_offset: usize },
2538 Whitespace { line_offset: usize },
2539}
2540
2541impl Element<Editor> for EditorElement {
2542 type ElementState = ();
2543
2544 fn id(&self) -> Option<gpui::ElementId> {
2545 None
2546 }
2547
2548 fn initialize(
2549 &mut self,
2550 editor: &mut Editor,
2551 element_state: Option<Self::ElementState>,
2552 cx: &mut gpui::ViewContext<Editor>,
2553 ) -> Self::ElementState {
2554 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2555
2556 let dispatch_context = editor.dispatch_context(cx);
2557 cx.with_element_id(cx.view().entity_id(), |global_id, cx| {
2558 cx.with_key_dispatch_context(dispatch_context, |cx| {
2559 cx.with_key_listeners(
2560 [
2561 build_action_listener(Editor::move_left),
2562 build_action_listener(Editor::move_right),
2563 build_action_listener(Editor::move_down),
2564 build_action_listener(Editor::move_up),
2565 build_key_listener(
2566 move |editor, key_down: &KeyDownEvent, dispatch_context, phase, cx| {
2567 if phase == DispatchPhase::Bubble {
2568 if let KeyMatch::Some(action) = cx.match_keystroke(
2569 &global_id,
2570 &key_down.keystroke,
2571 dispatch_context,
2572 ) {
2573 return Some(action);
2574 }
2575 }
2576
2577 None
2578 },
2579 ),
2580 ],
2581 |cx| cx.with_focus(editor.focus_handle.clone(), |_| {}),
2582 );
2583 })
2584 });
2585 }
2586
2587 fn layout(
2588 &mut self,
2589 editor: &mut Editor,
2590 element_state: &mut Self::ElementState,
2591 cx: &mut gpui::ViewContext<Editor>,
2592 ) -> gpui::LayoutId {
2593 let rem_size = cx.rem_size();
2594 let mut style = Style::default();
2595 style.size.width = relative(1.).into();
2596 style.size.height = match editor.mode {
2597 EditorMode::SingleLine => self.style.text.line_height_in_pixels(cx.rem_size()).into(),
2598 EditorMode::AutoHeight { .. } => todo!(),
2599 EditorMode::Full => relative(1.).into(),
2600 };
2601 cx.request_layout(&style, None)
2602 }
2603
2604 fn paint(
2605 &mut self,
2606 bounds: Bounds<gpui::Pixels>,
2607 editor: &mut Editor,
2608 element_state: &mut Self::ElementState,
2609 cx: &mut gpui::ViewContext<Editor>,
2610 ) {
2611 let layout = self.compute_layout(editor, cx, bounds);
2612
2613 cx.on_mouse_event({
2614 let position_map = layout.position_map.clone();
2615 move |editor, event: &ScrollWheelEvent, phase, cx| {
2616 if phase != DispatchPhase::Bubble {
2617 return;
2618 }
2619
2620 if Self::scroll(editor, event, &position_map, bounds, cx) {
2621 cx.stop_propagation();
2622 }
2623 }
2624 });
2625
2626 if editor.focus_handle.is_focused(cx) {
2627 cx.handle_text_input();
2628 }
2629
2630 cx.with_content_mask(ContentMask { bounds }, |cx| {
2631 let gutter_bounds = Bounds {
2632 origin: bounds.origin,
2633 size: layout.gutter_size,
2634 };
2635 let text_bounds = Bounds {
2636 origin: gutter_bounds.upper_right(),
2637 size: layout.text_size,
2638 };
2639
2640 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2641 if layout.gutter_size.width > Pixels::ZERO {
2642 self.paint_gutter(gutter_bounds, &layout, editor, cx);
2643 }
2644 self.paint_text(text_bounds, &layout, editor, cx);
2645 });
2646 }
2647}
2648
2649// impl EditorElement {
2650// type LayoutState = LayoutState;
2651// type PaintState = ();
2652
2653// fn layout(
2654// &mut self,
2655// constraint: SizeConstraint,
2656// editor: &mut Editor,
2657// cx: &mut ViewContext<Editor>,
2658// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2659// let mut size = constraint.max;
2660// if size.x.is_infinite() {
2661// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2662// }
2663
2664// let snapshot = editor.snapshot(cx);
2665// let style = self.style.clone();
2666
2667// let line_height = (style.text.font_size * style.line_height_scalar).round();
2668
2669// let gutter_padding;
2670// let gutter_width;
2671// let gutter_margin;
2672// if snapshot.show_gutter {
2673// let em_width = style.text.em_width(cx.font_cache());
2674// gutter_padding = (em_width * style.gutter_padding_factor).round();
2675// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2676// gutter_margin = -style.text.descent(cx.font_cache());
2677// } else {
2678// gutter_padding = 0.0;
2679// gutter_width = 0.0;
2680// gutter_margin = 0.0;
2681// };
2682
2683// let text_width = size.x - gutter_width;
2684// let em_width = style.text.em_width(cx.font_cache());
2685// let em_advance = style.text.em_advance(cx.font_cache());
2686// let overscroll = point(em_width, 0.);
2687// let snapshot = {
2688// editor.set_visible_line_count(size.y / line_height, cx);
2689
2690// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2691// let wrap_width = match editor.soft_wrap_mode(cx) {
2692// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2693// SoftWrap::EditorWidth => editor_width,
2694// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2695// };
2696
2697// if editor.set_wrap_width(Some(wrap_width), cx) {
2698// editor.snapshot(cx)
2699// } else {
2700// snapshot
2701// }
2702// };
2703
2704// let wrap_guides = editor
2705// .wrap_guides(cx)
2706// .iter()
2707// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2708// .collect();
2709
2710// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2711// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2712// size.set_y(
2713// scroll_height
2714// .min(constraint.max_along(Axis::Vertical))
2715// .max(constraint.min_along(Axis::Vertical))
2716// .max(line_height)
2717// .min(line_height * max_lines as f32),
2718// )
2719// } else if let EditorMode::SingleLine = snapshot.mode {
2720// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2721// } else if size.y.is_infinite() {
2722// size.set_y(scroll_height);
2723// }
2724// let gutter_size = point(gutter_width, size.y);
2725// let text_size = point(text_width, size.y);
2726
2727// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2728// let mut snapshot = editor.snapshot(cx);
2729
2730// let scroll_position = snapshot.scroll_position();
2731// // The scroll position is a fractional point, the whole number of which represents
2732// // the top of the window in terms of display rows.
2733// let start_row = scroll_position.y as u32;
2734// let height_in_lines = size.y / line_height;
2735// let max_row = snapshot.max_point().row();
2736
2737// // Add 1 to ensure selections bleed off screen
2738// let end_row = 1 + cmp::min(
2739// (scroll_position.y + height_in_lines).ceil() as u32,
2740// max_row,
2741// );
2742
2743// let start_anchor = if start_row == 0 {
2744// Anchor::min()
2745// } else {
2746// snapshot
2747// .buffer_snapshot
2748// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2749// };
2750// let end_anchor = if end_row > max_row {
2751// Anchor::max
2752// } else {
2753// snapshot
2754// .buffer_snapshot
2755// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2756// };
2757
2758// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2759// let mut active_rows = BTreeMap::new();
2760// let mut fold_ranges = Vec::new();
2761// let is_singleton = editor.is_singleton(cx);
2762
2763// let highlighted_rows = editor.highlighted_rows();
2764// let theme = theme::current(cx);
2765// let highlighted_ranges = editor.background_highlights_in_range(
2766// start_anchor..end_anchor,
2767// &snapshot.display_snapshot,
2768// theme.as_ref(),
2769// );
2770
2771// fold_ranges.extend(
2772// snapshot
2773// .folds_in_range(start_anchor..end_anchor)
2774// .map(|anchor| {
2775// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2776// (
2777// start.row,
2778// start.to_display_point(&snapshot.display_snapshot)
2779// ..anchor.end.to_display_point(&snapshot),
2780// )
2781// }),
2782// );
2783
2784// let mut newest_selection_head = None;
2785
2786// if editor.show_local_selections {
2787// let mut local_selections: Vec<Selection<Point>> = editor
2788// .selections
2789// .disjoint_in_range(start_anchor..end_anchor, cx);
2790// local_selections.extend(editor.selections.pending(cx));
2791// let mut layouts = Vec::new();
2792// let newest = editor.selections.newest(cx);
2793// for selection in local_selections.drain(..) {
2794// let is_empty = selection.start == selection.end;
2795// let is_newest = selection == newest;
2796
2797// let layout = SelectionLayout::new(
2798// selection,
2799// editor.selections.line_mode,
2800// editor.cursor_shape,
2801// &snapshot.display_snapshot,
2802// is_newest,
2803// true,
2804// );
2805// if is_newest {
2806// newest_selection_head = Some(layout.head);
2807// }
2808
2809// for row in cmp::max(layout.active_rows.start, start_row)
2810// ..=cmp::min(layout.active_rows.end, end_row)
2811// {
2812// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2813// *contains_non_empty_selection |= !is_empty;
2814// }
2815// layouts.push(layout);
2816// }
2817
2818// selections.push((style.selection, layouts));
2819// }
2820
2821// if let Some(collaboration_hub) = &editor.collaboration_hub {
2822// // When following someone, render the local selections in their color.
2823// if let Some(leader_id) = editor.leader_peer_id {
2824// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2825// if let Some(participant_index) = collaboration_hub
2826// .user_participant_indices(cx)
2827// .get(&collaborator.user_id)
2828// {
2829// if let Some((local_selection_style, _)) = selections.first_mut() {
2830// *local_selection_style =
2831// style.selection_style_for_room_participant(participant_index.0);
2832// }
2833// }
2834// }
2835// }
2836
2837// let mut remote_selections = HashMap::default();
2838// for selection in snapshot.remote_selections_in_range(
2839// &(start_anchor..end_anchor),
2840// collaboration_hub.as_ref(),
2841// cx,
2842// ) {
2843// let selection_style = if let Some(participant_index) = selection.participant_index {
2844// style.selection_style_for_room_participant(participant_index.0)
2845// } else {
2846// style.absent_selection
2847// };
2848
2849// // Don't re-render the leader's selections, since the local selections
2850// // match theirs.
2851// if Some(selection.peer_id) == editor.leader_peer_id {
2852// continue;
2853// }
2854
2855// remote_selections
2856// .entry(selection.replica_id)
2857// .or_insert((selection_style, Vec::new()))
2858// .1
2859// .push(SelectionLayout::new(
2860// selection.selection,
2861// selection.line_mode,
2862// selection.cursor_shape,
2863// &snapshot.display_snapshot,
2864// false,
2865// false,
2866// ));
2867// }
2868
2869// selections.extend(remote_selections.into_values());
2870// }
2871
2872// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2873// let show_scrollbars = match scrollbar_settings.show {
2874// ShowScrollbar::Auto => {
2875// // Git
2876// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2877// ||
2878// // Selections
2879// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2880// // Scrollmanager
2881// || editor.scroll_manager.scrollbars_visible()
2882// }
2883// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2884// ShowScrollbar::Always => true,
2885// ShowScrollbar::Never => false,
2886// };
2887
2888// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2889// .into_iter()
2890// .map(|(id, fold)| {
2891// let color = self
2892// .style
2893// .folds
2894// .ellipses
2895// .background
2896// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2897// .color;
2898
2899// (id, fold, color)
2900// })
2901// .collect();
2902
2903// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2904// let newest = editor.selections.newest::<Point>(cx);
2905// SelectionLayout::new(
2906// newest,
2907// editor.selections.line_mode,
2908// editor.cursor_shape,
2909// &snapshot.display_snapshot,
2910// true,
2911// true,
2912// )
2913// .head
2914// });
2915
2916// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2917// start_row..end_row,
2918// &active_rows,
2919// head_for_relative,
2920// is_singleton,
2921// &snapshot,
2922// cx,
2923// );
2924
2925// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2926
2927// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2928
2929// let mut max_visible_line_width = 0.0;
2930// let line_layouts =
2931// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2932// for line_with_invisibles in &line_layouts {
2933// if line_with_invisibles.line.width() > max_visible_line_width {
2934// max_visible_line_width = line_with_invisibles.line.width();
2935// }
2936// }
2937
2938// let style = self.style.clone();
2939// let longest_line_width = layout_line(
2940// snapshot.longest_row(),
2941// &snapshot,
2942// &style,
2943// cx.text_layout_cache(),
2944// )
2945// .width();
2946// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2947// let em_width = style.text.em_width(cx.font_cache());
2948// let (scroll_width, blocks) = self.layout_blocks(
2949// start_row..end_row,
2950// &snapshot,
2951// size.x,
2952// scroll_width,
2953// gutter_padding,
2954// gutter_width,
2955// em_width,
2956// gutter_width + gutter_margin,
2957// line_height,
2958// &style,
2959// &line_layouts,
2960// editor,
2961// cx,
2962// );
2963
2964// let scroll_max = point(
2965// ((scroll_width - text_size.x) / em_width).max(0.0),
2966// max_row as f32,
2967// );
2968
2969// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2970
2971// let autoscrolled = if autoscroll_horizontally {
2972// editor.autoscroll_horizontally(
2973// start_row,
2974// text_size.x,
2975// scroll_width,
2976// em_width,
2977// &line_layouts,
2978// cx,
2979// )
2980// } else {
2981// false
2982// };
2983
2984// if clamped || autoscrolled {
2985// snapshot = editor.snapshot(cx);
2986// }
2987
2988// let style = editor.style(cx);
2989
2990// let mut context_menu = None;
2991// let mut code_actions_indicator = None;
2992// if let Some(newest_selection_head) = newest_selection_head {
2993// if (start_row..end_row).contains(&newest_selection_head.row()) {
2994// if editor.context_menu_visible() {
2995// context_menu =
2996// editor.render_context_menu(newest_selection_head, style.clone(), cx);
2997// }
2998
2999// let active = matches!(
3000// editor.context_menu.read().as_ref(),
3001// Some(crate::ContextMenu::CodeActions(_))
3002// );
3003
3004// code_actions_indicator = editor
3005// .render_code_actions_indicator(&style, active, cx)
3006// .map(|indicator| (newest_selection_head.row(), indicator));
3007// }
3008// }
3009
3010// let visible_rows = start_row..start_row + line_layouts.len() as u32;
3011// let mut hover = editor.hover_state.render(
3012// &snapshot,
3013// &style,
3014// visible_rows,
3015// editor.workspace.as_ref().map(|(w, _)| w.clone()),
3016// cx,
3017// );
3018// let mode = editor.mode;
3019
3020// let mut fold_indicators = editor.render_fold_indicators(
3021// fold_statuses,
3022// &style,
3023// editor.gutter_hovered,
3024// line_height,
3025// gutter_margin,
3026// cx,
3027// );
3028
3029// if let Some((_, context_menu)) = context_menu.as_mut() {
3030// context_menu.layout(
3031// SizeConstraint {
3032// min: gpui::Point::<Pixels>::zero(),
3033// max: point(
3034// cx.window_size().x * 0.7,
3035// (12. * line_height).min((size.y - line_height) / 2.),
3036// ),
3037// },
3038// editor,
3039// cx,
3040// );
3041// }
3042
3043// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
3044// indicator.layout(
3045// SizeConstraint::strict_along(
3046// Axis::Vertical,
3047// line_height * style.code_actions.vertical_scale,
3048// ),
3049// editor,
3050// cx,
3051// );
3052// }
3053
3054// for fold_indicator in fold_indicators.iter_mut() {
3055// if let Some(indicator) = fold_indicator.as_mut() {
3056// indicator.layout(
3057// SizeConstraint::strict_along(
3058// Axis::Vertical,
3059// line_height * style.code_actions.vertical_scale,
3060// ),
3061// editor,
3062// cx,
3063// );
3064// }
3065// }
3066
3067// if let Some((_, hover_popovers)) = hover.as_mut() {
3068// for hover_popover in hover_popovers.iter_mut() {
3069// hover_popover.layout(
3070// SizeConstraint {
3071// min: gpui::Point::<Pixels>::zero(),
3072// max: point(
3073// (120. * em_width) // Default size
3074// .min(size.x / 2.) // Shrink to half of the editor width
3075// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3076// (16. * line_height) // Default size
3077// .min(size.y / 2.) // Shrink to half of the editor height
3078// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3079// ),
3080// },
3081// editor,
3082// cx,
3083// );
3084// }
3085// }
3086
3087// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
3088// let invisible_symbol_style = RunStyle {
3089// color: self.style.whitespace,
3090// font_id: self.style.text.font_id,
3091// underline: Default::default(),
3092// };
3093
3094// (
3095// size,
3096// LayoutState {
3097// mode,
3098// position_map: Arc::new(PositionMap {
3099// size,
3100// scroll_max,
3101// line_layouts,
3102// line_height,
3103// em_width,
3104// em_advance,
3105// snapshot,
3106// }),
3107// visible_display_row_range: start_row..end_row,
3108// wrap_guides,
3109// gutter_size,
3110// gutter_padding,
3111// text_size,
3112// scrollbar_row_range,
3113// show_scrollbars,
3114// is_singleton,
3115// max_row,
3116// gutter_margin,
3117// active_rows,
3118// highlighted_rows,
3119// highlighted_ranges,
3120// fold_ranges,
3121// line_number_layouts,
3122// display_hunks,
3123// blocks,
3124// selections,
3125// context_menu,
3126// code_actions_indicator,
3127// fold_indicators,
3128// tab_invisible: cx.text_layout_cache().layout_str(
3129// "→",
3130// invisible_symbol_font_size,
3131// &[("→".len(), invisible_symbol_style)],
3132// ),
3133// space_invisible: cx.text_layout_cache().layout_str(
3134// "•",
3135// invisible_symbol_font_size,
3136// &[("•".len(), invisible_symbol_style)],
3137// ),
3138// hover_popovers: hover,
3139// },
3140// )
3141// }
3142
3143// fn paint(
3144// &mut self,
3145// bounds: Bounds<Pixels>,
3146// visible_bounds: Bounds<Pixels>,
3147// layout: &mut Self::LayoutState,
3148// editor: &mut Editor,
3149// cx: &mut ViewContext<Editor>,
3150// ) -> Self::PaintState {
3151// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
3152// cx.scene().push_layer(Some(visible_bounds));
3153
3154// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
3155// let text_bounds = Bounds::<Pixels>::new(
3156// bounds.origin + point(layout.gutter_size.x, 0.0),
3157// layout.text_size,
3158// );
3159
3160// Self::attach_mouse_handlers(
3161// &layout.position_map,
3162// layout.hover_popovers.is_some(),
3163// visible_bounds,
3164// text_bounds,
3165// gutter_bounds,
3166// bounds,
3167// cx,
3168// );
3169
3170// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3171// if layout.gutter_size.x > 0. {
3172// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3173// }
3174// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3175
3176// cx.scene().push_layer(Some(bounds));
3177// if !layout.blocks.is_empty {
3178// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3179// }
3180// self.paint_scrollbar(bounds, layout, &editor, cx);
3181// cx.scene().pop_layer();
3182// cx.scene().pop_layer();
3183// }
3184
3185// fn rect_for_text_range(
3186// &self,
3187// range_utf16: Range<usize>,
3188// bounds: Bounds<Pixels>,
3189// _: Bounds<Pixels>,
3190// layout: &Self::LayoutState,
3191// _: &Self::PaintState,
3192// _: &Editor,
3193// _: &ViewContext<Editor>,
3194// ) -> Option<Bounds<Pixels>> {
3195// let text_bounds = Bounds::<Pixels>::new(
3196// bounds.origin + point(layout.gutter_size.x, 0.0),
3197// layout.text_size,
3198// );
3199// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3200// let scroll_position = layout.position_map.snapshot.scroll_position();
3201// let start_row = scroll_position.y as u32;
3202// let scroll_top = scroll_position.y * layout.position_map.line_height;
3203// let scroll_left = scroll_position.x * layout.position_map.em_width;
3204
3205// let range_start = OffsetUtf16(range_utf16.start)
3206// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3207// if range_start.row() < start_row {
3208// return None;
3209// }
3210
3211// let line = &layout
3212// .position_map
3213// .line_layouts
3214// .get((range_start.row() - start_row) as usize)?
3215// .line;
3216// let range_start_x = line.x_for_index(range_start.column() as usize);
3217// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3218// Some(Bounds::<Pixels>::new(
3219// content_origin
3220// + point(
3221// range_start_x,
3222// range_start_y + layout.position_map.line_height,
3223// )
3224// - point(scroll_left, scroll_top),
3225// point(
3226// layout.position_map.em_width,
3227// layout.position_map.line_height,
3228// ),
3229// ))
3230// }
3231
3232// fn debug(
3233// &self,
3234// bounds: Bounds<Pixels>,
3235// _: &Self::LayoutState,
3236// _: &Self::PaintState,
3237// _: &Editor,
3238// _: &ViewContext<Editor>,
3239// ) -> json::Value {
3240// json!({
3241// "type": "BufferElement",
3242// "bounds": bounds.to_json()
3243// })
3244// }
3245// }
3246
3247type BufferRow = u32;
3248
3249pub struct LayoutState {
3250 position_map: Arc<PositionMap>,
3251 gutter_size: Size<Pixels>,
3252 gutter_padding: Pixels,
3253 gutter_margin: Pixels,
3254 text_size: gpui::Size<Pixels>,
3255 mode: EditorMode,
3256 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3257 visible_display_row_range: Range<u32>,
3258 active_rows: BTreeMap<u32, bool>,
3259 highlighted_rows: Option<Range<u32>>,
3260 line_number_layouts: Vec<Option<gpui::Line>>,
3261 display_hunks: Vec<DisplayDiffHunk>,
3262 // blocks: Vec<BlockLayout>,
3263 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3264 fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)>,
3265 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3266 scrollbar_row_range: Range<f32>,
3267 show_scrollbars: bool,
3268 is_singleton: bool,
3269 max_row: u32,
3270 // context_menu: Option<(DisplayPoint, AnyElement<Editor>)>,
3271 // code_actions_indicator: Option<(u32, AnyElement<Editor>)>,
3272 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement<Editor>>)>,
3273 // fold_indicators: Vec<Option<AnyElement<Editor>>>,
3274 tab_invisible: Line,
3275 space_invisible: Line,
3276}
3277
3278struct PositionMap {
3279 size: Size<Pixels>,
3280 line_height: Pixels,
3281 scroll_max: gpui::Point<f32>,
3282 em_width: Pixels,
3283 em_advance: Pixels,
3284 line_layouts: Vec<LineWithInvisibles>,
3285 snapshot: EditorSnapshot,
3286}
3287
3288#[derive(Debug, Copy, Clone)]
3289pub struct PointForPosition {
3290 pub previous_valid: DisplayPoint,
3291 pub next_valid: DisplayPoint,
3292 pub exact_unclipped: DisplayPoint,
3293 pub column_overshoot_after_line_end: u32,
3294}
3295
3296impl PointForPosition {
3297 #[cfg(test)]
3298 pub fn valid(valid: DisplayPoint) -> Self {
3299 Self {
3300 previous_valid: valid,
3301 next_valid: valid,
3302 exact_unclipped: valid,
3303 column_overshoot_after_line_end: 0,
3304 }
3305 }
3306
3307 pub fn as_valid(&self) -> Option<DisplayPoint> {
3308 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3309 Some(self.previous_valid)
3310 } else {
3311 None
3312 }
3313 }
3314}
3315
3316impl PositionMap {
3317 fn point_for_position(
3318 &self,
3319 text_bounds: Bounds<Pixels>,
3320 position: gpui::Point<Pixels>,
3321 ) -> PointForPosition {
3322 let scroll_position = self.snapshot.scroll_position();
3323 let position = position - text_bounds.origin;
3324 let y = position.y.max(px(0.)).min(self.size.width);
3325 let x = position.x + (scroll_position.x * self.em_width);
3326 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3327
3328 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3329 .line_layouts
3330 .get(row as usize - scroll_position.y as usize)
3331 .map(|&LineWithInvisibles { ref line, .. }| line)
3332 {
3333 if let Some(ix) = line.index_for_x(x) {
3334 (ix as u32, px(0.))
3335 } else {
3336 (line.len as u32, px(0.).max(x - line.width))
3337 }
3338 } else {
3339 (0, x)
3340 };
3341
3342 let mut exact_unclipped = DisplayPoint::new(row, column);
3343 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3344 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3345
3346 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance).into();
3347 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3348 PointForPosition {
3349 previous_valid,
3350 next_valid,
3351 exact_unclipped,
3352 column_overshoot_after_line_end,
3353 }
3354 }
3355}
3356
3357struct BlockLayout {
3358 row: u32,
3359 element: AnyElement<Editor>,
3360 style: BlockStyle,
3361}
3362
3363fn layout_line(
3364 row: u32,
3365 snapshot: &EditorSnapshot,
3366 style: &EditorStyle,
3367 cx: &WindowContext,
3368) -> Result<Line> {
3369 let mut line = snapshot.line(row);
3370
3371 if line.len() > MAX_LINE_LEN {
3372 let mut len = MAX_LINE_LEN;
3373 while !line.is_char_boundary(len) {
3374 len -= 1;
3375 }
3376
3377 line.truncate(len);
3378 }
3379
3380 Ok(cx
3381 .text_system()
3382 .layout_text(
3383 &line,
3384 style.text.font_size.to_pixels(cx.rem_size()),
3385 &[TextRun {
3386 len: snapshot.line_len(row) as usize,
3387 font: style.text.font(),
3388 color: Hsla::default(),
3389 underline: None,
3390 }],
3391 None,
3392 )?
3393 .pop()
3394 .unwrap())
3395}
3396
3397#[derive(Debug)]
3398pub struct Cursor {
3399 origin: gpui::Point<Pixels>,
3400 block_width: Pixels,
3401 line_height: Pixels,
3402 color: Hsla,
3403 shape: CursorShape,
3404 block_text: Option<Line>,
3405}
3406
3407impl Cursor {
3408 pub fn new(
3409 origin: gpui::Point<Pixels>,
3410 block_width: Pixels,
3411 line_height: Pixels,
3412 color: Hsla,
3413 shape: CursorShape,
3414 block_text: Option<Line>,
3415 ) -> Cursor {
3416 Cursor {
3417 origin,
3418 block_width,
3419 line_height,
3420 color,
3421 shape,
3422 block_text,
3423 }
3424 }
3425
3426 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3427 Bounds {
3428 origin: self.origin + origin,
3429 size: size(self.block_width, self.line_height),
3430 }
3431 }
3432
3433 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3434 let bounds = match self.shape {
3435 CursorShape::Bar => Bounds {
3436 origin: self.origin + origin,
3437 size: size(px(2.0), self.line_height),
3438 },
3439 CursorShape::Block | CursorShape::Hollow => Bounds {
3440 origin: self.origin + origin,
3441 size: size(self.block_width, self.line_height),
3442 },
3443 CursorShape::Underscore => Bounds {
3444 origin: self.origin
3445 + origin
3446 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3447 size: size(self.block_width, px(2.0)),
3448 },
3449 };
3450
3451 //Draw background or border quad
3452 if matches!(self.shape, CursorShape::Hollow) {
3453 cx.paint_quad(
3454 bounds,
3455 Corners::default(),
3456 transparent_black(),
3457 Edges::all(px(1.)),
3458 self.color,
3459 );
3460 } else {
3461 cx.paint_quad(
3462 bounds,
3463 Corners::default(),
3464 self.color,
3465 Edges::default(),
3466 transparent_black(),
3467 );
3468 }
3469
3470 if let Some(block_text) = &self.block_text {
3471 block_text.paint(self.origin + origin, self.line_height, cx);
3472 }
3473 }
3474
3475 pub fn shape(&self) -> CursorShape {
3476 self.shape
3477 }
3478}
3479
3480#[derive(Debug)]
3481pub struct HighlightedRange {
3482 pub start_y: Pixels,
3483 pub line_height: Pixels,
3484 pub lines: Vec<HighlightedRangeLine>,
3485 pub color: Hsla,
3486 pub corner_radius: Pixels,
3487}
3488
3489#[derive(Debug)]
3490pub struct HighlightedRangeLine {
3491 pub start_x: Pixels,
3492 pub end_x: Pixels,
3493}
3494
3495impl HighlightedRange {
3496 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3497 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3498 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3499 self.paint_lines(
3500 self.start_y + self.line_height,
3501 &self.lines[1..],
3502 bounds,
3503 cx,
3504 );
3505 } else {
3506 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3507 }
3508 }
3509
3510 fn paint_lines(
3511 &self,
3512 start_y: Pixels,
3513 lines: &[HighlightedRangeLine],
3514 bounds: Bounds<Pixels>,
3515 cx: &mut WindowContext,
3516 ) {
3517 if lines.is_empty() {
3518 return;
3519 }
3520
3521 let first_line = lines.first().unwrap();
3522 let last_line = lines.last().unwrap();
3523
3524 let first_top_left = point(first_line.start_x, start_y);
3525 let first_top_right = point(first_line.end_x, start_y);
3526
3527 let curve_height = point(Pixels::ZERO, self.corner_radius);
3528 let curve_width = |start_x: Pixels, end_x: Pixels| {
3529 let max = (end_x - start_x) / 2.;
3530 let width = if max < self.corner_radius {
3531 max
3532 } else {
3533 self.corner_radius
3534 };
3535
3536 point(width, Pixels::ZERO)
3537 };
3538
3539 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3540 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3541 path.curve_to(first_top_right + curve_height, first_top_right);
3542
3543 let mut iter = lines.iter().enumerate().peekable();
3544 while let Some((ix, line)) = iter.next() {
3545 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3546
3547 if let Some((_, next_line)) = iter.peek() {
3548 let next_top_right = point(next_line.end_x, bottom_right.y);
3549
3550 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3551 Ordering::Equal => {
3552 path.line_to(bottom_right);
3553 }
3554 Ordering::Less => {
3555 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3556 path.line_to(bottom_right - curve_height);
3557 if self.corner_radius > Pixels::ZERO {
3558 path.curve_to(bottom_right - curve_width, bottom_right);
3559 }
3560 path.line_to(next_top_right + curve_width);
3561 if self.corner_radius > Pixels::ZERO {
3562 path.curve_to(next_top_right + curve_height, next_top_right);
3563 }
3564 }
3565 Ordering::Greater => {
3566 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3567 path.line_to(bottom_right - curve_height);
3568 if self.corner_radius > Pixels::ZERO {
3569 path.curve_to(bottom_right + curve_width, bottom_right);
3570 }
3571 path.line_to(next_top_right - curve_width);
3572 if self.corner_radius > Pixels::ZERO {
3573 path.curve_to(next_top_right + curve_height, next_top_right);
3574 }
3575 }
3576 }
3577 } else {
3578 let curve_width = curve_width(line.start_x, line.end_x);
3579 path.line_to(bottom_right - curve_height);
3580 if self.corner_radius > Pixels::ZERO {
3581 path.curve_to(bottom_right - curve_width, bottom_right);
3582 }
3583
3584 let bottom_left = point(line.start_x, bottom_right.y);
3585 path.line_to(bottom_left + curve_width);
3586 if self.corner_radius > Pixels::ZERO {
3587 path.curve_to(bottom_left - curve_height, bottom_left);
3588 }
3589 }
3590 }
3591
3592 if first_line.start_x > last_line.start_x {
3593 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3594 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3595 path.line_to(second_top_left + curve_height);
3596 if self.corner_radius > Pixels::ZERO {
3597 path.curve_to(second_top_left + curve_width, second_top_left);
3598 }
3599 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3600 path.line_to(first_bottom_left - curve_width);
3601 if self.corner_radius > Pixels::ZERO {
3602 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3603 }
3604 }
3605
3606 path.line_to(first_top_left + curve_height);
3607 if self.corner_radius > Pixels::ZERO {
3608 path.curve_to(first_top_left + top_curve_width, first_top_left);
3609 }
3610 path.line_to(first_top_right - top_curve_width);
3611
3612 cx.paint_path(path, self.color);
3613 }
3614}
3615
3616// fn range_to_bounds(
3617// range: &Range<DisplayPoint>,
3618// content_origin: gpui::Point<Pixels>,
3619// scroll_left: f32,
3620// scroll_top: f32,
3621// visible_row_range: &Range<u32>,
3622// line_end_overshoot: f32,
3623// position_map: &PositionMap,
3624// ) -> impl Iterator<Item = Bounds<Pixels>> {
3625// let mut bounds: SmallVec<[Bounds<Pixels>; 1]> = SmallVec::new();
3626
3627// if range.start == range.end {
3628// return bounds.into_iter();
3629// }
3630
3631// let start_row = visible_row_range.start;
3632// let end_row = visible_row_range.end;
3633
3634// let row_range = if range.end.column() == 0 {
3635// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3636// } else {
3637// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
3638// };
3639
3640// let first_y =
3641// content_origin.y + row_range.start as f32 * position_map.line_height - scroll_top;
3642
3643// for (idx, row) in row_range.enumerate() {
3644// let line_layout = &position_map.line_layouts[(row - start_row) as usize].line;
3645
3646// let start_x = if row == range.start.row() {
3647// content_origin.x + line_layout.x_for_index(range.start.column() as usize)
3648// - scroll_left
3649// } else {
3650// content_origin.x - scroll_left
3651// };
3652
3653// let end_x = if row == range.end.row() {
3654// content_origin.x + line_layout.x_for_index(range.end.column() as usize) - scroll_left
3655// } else {
3656// content_origin.x + line_layout.width() + line_end_overshoot - scroll_left
3657// };
3658
3659// bounds.push(Bounds::<Pixels>::from_points(
3660// point(start_x, first_y + position_map.line_height * idx as f32),
3661// point(end_x, first_y + position_map.line_height * (idx + 1) as f32),
3662// ))
3663// }
3664
3665// bounds.into_iter()
3666// }
3667
3668pub fn scale_vertical_mouse_autoscroll_delta(delta: f32) -> f32 {
3669 delta.powf(1.5) / 100.0
3670}
3671
3672fn scale_horizontal_mouse_autoscroll_delta(delta: f32) -> f32 {
3673 delta.powf(1.2) / 300.0
3674}
3675
3676// #[cfg(test)]
3677// mod tests {
3678// use super::*;
3679// use crate::{
3680// display_map::{BlockDisposition, BlockProperties},
3681// editor_tests::{init_test, update_test_language_settings},
3682// Editor, MultiBuffer,
3683// };
3684// use gpui::TestAppContext;
3685// use language::language_settings;
3686// use log::info;
3687// use std::{num::NonZeroU32, sync::Arc};
3688// use util::test::sample_text;
3689
3690// #[gpui::test]
3691// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3692// init_test(cx, |_| {});
3693// let editor = cx
3694// .add_window(|cx| {
3695// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3696// Editor::new(EditorMode::Full, buffer, None, None, cx)
3697// })
3698// .root(cx);
3699// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3700
3701// let layouts = editor.update(cx, |editor, cx| {
3702// let snapshot = editor.snapshot(cx);
3703// element
3704// .layout_line_numbers(
3705// 0..6,
3706// &Default::default(),
3707// DisplayPoint::new(0, 0),
3708// false,
3709// &snapshot,
3710// cx,
3711// )
3712// .0
3713// });
3714// assert_eq!(layouts.len(), 6);
3715
3716// let relative_rows = editor.update(cx, |editor, cx| {
3717// let snapshot = editor.snapshot(cx);
3718// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3719// });
3720// assert_eq!(relative_rows[&0], 3);
3721// assert_eq!(relative_rows[&1], 2);
3722// assert_eq!(relative_rows[&2], 1);
3723// // current line has no relative number
3724// assert_eq!(relative_rows[&4], 1);
3725// assert_eq!(relative_rows[&5], 2);
3726
3727// // works if cursor is before screen
3728// let relative_rows = editor.update(cx, |editor, cx| {
3729// let snapshot = editor.snapshot(cx);
3730
3731// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3732// });
3733// assert_eq!(relative_rows.len(), 3);
3734// assert_eq!(relative_rows[&3], 2);
3735// assert_eq!(relative_rows[&4], 3);
3736// assert_eq!(relative_rows[&5], 4);
3737
3738// // works if cursor is after screen
3739// let relative_rows = editor.update(cx, |editor, cx| {
3740// let snapshot = editor.snapshot(cx);
3741
3742// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3743// });
3744// assert_eq!(relative_rows.len(), 3);
3745// assert_eq!(relative_rows[&0], 5);
3746// assert_eq!(relative_rows[&1], 4);
3747// assert_eq!(relative_rows[&2], 3);
3748// }
3749
3750// #[gpui::test]
3751// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3752// init_test(cx, |_| {});
3753
3754// let editor = cx
3755// .add_window(|cx| {
3756// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3757// Editor::new(EditorMode::Full, buffer, None, None, cx)
3758// })
3759// .root(cx);
3760// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3761// let (_, state) = editor.update(cx, |editor, cx| {
3762// editor.cursor_shape = CursorShape::Block;
3763// editor.change_selections(None, cx, |s| {
3764// s.select_ranges([
3765// Point::new(0, 0)..Point::new(1, 0),
3766// Point::new(3, 2)..Point::new(3, 3),
3767// Point::new(5, 6)..Point::new(6, 0),
3768// ]);
3769// });
3770// element.layout(
3771// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3772// editor,
3773// cx,
3774// )
3775// });
3776// assert_eq!(state.selections.len(), 1);
3777// let local_selections = &state.selections[0].1;
3778// assert_eq!(local_selections.len(), 3);
3779// // moves cursor back one line
3780// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3781// assert_eq!(
3782// local_selections[0].range,
3783// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3784// );
3785
3786// // moves cursor back one column
3787// assert_eq!(
3788// local_selections[1].range,
3789// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3790// );
3791// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3792
3793// // leaves cursor on the max point
3794// assert_eq!(
3795// local_selections[2].range,
3796// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3797// );
3798// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3799
3800// // active lines does not include 1 (even though the range of the selection does)
3801// assert_eq!(
3802// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3803// vec![0, 3, 5, 6]
3804// );
3805
3806// // multi-buffer support
3807// // in DisplayPoint co-ordinates, this is what we're dealing with:
3808// // 0: [[file
3809// // 1: header]]
3810// // 2: aaaaaa
3811// // 3: bbbbbb
3812// // 4: cccccc
3813// // 5:
3814// // 6: ...
3815// // 7: ffffff
3816// // 8: gggggg
3817// // 9: hhhhhh
3818// // 10:
3819// // 11: [[file
3820// // 12: header]]
3821// // 13: bbbbbb
3822// // 14: cccccc
3823// // 15: dddddd
3824// let editor = cx
3825// .add_window(|cx| {
3826// let buffer = MultiBuffer::build_multi(
3827// [
3828// (
3829// &(sample_text(8, 6, 'a') + "\n"),
3830// vec![
3831// Point::new(0, 0)..Point::new(3, 0),
3832// Point::new(4, 0)..Point::new(7, 0),
3833// ],
3834// ),
3835// (
3836// &(sample_text(8, 6, 'a') + "\n"),
3837// vec![Point::new(1, 0)..Point::new(3, 0)],
3838// ),
3839// ],
3840// cx,
3841// );
3842// Editor::new(EditorMode::Full, buffer, None, None, cx)
3843// })
3844// .root(cx);
3845// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3846// let (_, state) = editor.update(cx, |editor, cx| {
3847// editor.cursor_shape = CursorShape::Block;
3848// editor.change_selections(None, cx, |s| {
3849// s.select_display_ranges([
3850// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3851// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3852// ]);
3853// });
3854// element.layout(
3855// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3856// editor,
3857// cx,
3858// )
3859// });
3860
3861// assert_eq!(state.selections.len(), 1);
3862// let local_selections = &state.selections[0].1;
3863// assert_eq!(local_selections.len(), 2);
3864
3865// // moves cursor on excerpt boundary back a line
3866// // and doesn't allow selection to bleed through
3867// assert_eq!(
3868// local_selections[0].range,
3869// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3870// );
3871// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3872
3873// // moves cursor on buffer boundary back two lines
3874// // and doesn't allow selection to bleed through
3875// assert_eq!(
3876// local_selections[1].range,
3877// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3878// );
3879// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3880// }
3881
3882// #[gpui::test]
3883// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3884// init_test(cx, |_| {});
3885
3886// let editor = cx
3887// .add_window(|cx| {
3888// let buffer = MultiBuffer::build_simple("", cx);
3889// Editor::new(EditorMode::Full, buffer, None, None, cx)
3890// })
3891// .root(cx);
3892
3893// editor.update(cx, |editor, cx| {
3894// editor.set_placeholder_text("hello", cx);
3895// editor.insert_blocks(
3896// [BlockProperties {
3897// style: BlockStyle::Fixed,
3898// disposition: BlockDisposition::Above,
3899// height: 3,
3900// position: Anchor::min(),
3901// render: Arc::new(|_| Empty::new().into_any),
3902// }],
3903// None,
3904// cx,
3905// );
3906
3907// // Blur the editor so that it displays placeholder text.
3908// cx.blur();
3909// });
3910
3911// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3912// let (size, mut state) = editor.update(cx, |editor, cx| {
3913// element.layout(
3914// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3915// editor,
3916// cx,
3917// )
3918// });
3919
3920// assert_eq!(state.position_map.line_layouts.len(), 4);
3921// assert_eq!(
3922// state
3923// .line_number_layouts
3924// .iter()
3925// .map(Option::is_some)
3926// .collect::<Vec<_>>(),
3927// &[false, false, false, true]
3928// );
3929
3930// // Don't panic.
3931// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3932// editor.update(cx, |editor, cx| {
3933// element.paint(bounds, bounds, &mut state, editor, cx);
3934// });
3935// }
3936
3937// #[gpui::test]
3938// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3939// const TAB_SIZE: u32 = 4;
3940
3941// let input_text = "\t \t|\t| a b";
3942// let expected_invisibles = vec![
3943// Invisible::Tab {
3944// line_start_offset: 0,
3945// },
3946// Invisible::Whitespace {
3947// line_offset: TAB_SIZE as usize,
3948// },
3949// Invisible::Tab {
3950// line_start_offset: TAB_SIZE as usize + 1,
3951// },
3952// Invisible::Tab {
3953// line_start_offset: TAB_SIZE as usize * 2 + 1,
3954// },
3955// Invisible::Whitespace {
3956// line_offset: TAB_SIZE as usize * 3 + 1,
3957// },
3958// Invisible::Whitespace {
3959// line_offset: TAB_SIZE as usize * 3 + 3,
3960// },
3961// ];
3962// assert_eq!(
3963// expected_invisibles.len(),
3964// input_text
3965// .chars()
3966// .filter(|initial_char| initial_char.is_whitespace())
3967// .count(),
3968// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3969// );
3970
3971// init_test(cx, |s| {
3972// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3973// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3974// });
3975
3976// let actual_invisibles =
3977// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3978
3979// assert_eq!(expected_invisibles, actual_invisibles);
3980// }
3981
3982// #[gpui::test]
3983// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3984// init_test(cx, |s| {
3985// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3986// s.defaults.tab_size = NonZeroU32::new(4);
3987// });
3988
3989// for editor_mode_without_invisibles in [
3990// EditorMode::SingleLine,
3991// EditorMode::AutoHeight { max_lines: 100 },
3992// ] {
3993// let invisibles = collect_invisibles_from_new_editor(
3994// cx,
3995// editor_mode_without_invisibles,
3996// "\t\t\t| | a b",
3997// 500.0,
3998// );
3999// assert!(invisibles.is_empty,
4000// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4001// }
4002// }
4003
4004// #[gpui::test]
4005// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4006// let tab_size = 4;
4007// let input_text = "a\tbcd ".repeat(9);
4008// let repeated_invisibles = [
4009// Invisible::Tab {
4010// line_start_offset: 1,
4011// },
4012// Invisible::Whitespace {
4013// line_offset: tab_size as usize + 3,
4014// },
4015// Invisible::Whitespace {
4016// line_offset: tab_size as usize + 4,
4017// },
4018// Invisible::Whitespace {
4019// line_offset: tab_size as usize + 5,
4020// },
4021// ];
4022// let expected_invisibles = std::iter::once(repeated_invisibles)
4023// .cycle()
4024// .take(9)
4025// .flatten()
4026// .collect::<Vec<_>>();
4027// assert_eq!(
4028// expected_invisibles.len(),
4029// input_text
4030// .chars()
4031// .filter(|initial_char| initial_char.is_whitespace())
4032// .count(),
4033// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4034// );
4035// info!("Expected invisibles: {expected_invisibles:?}");
4036
4037// init_test(cx, |_| {});
4038
4039// // Put the same string with repeating whitespace pattern into editors of various size,
4040// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4041// let resize_step = 10.0;
4042// let mut editor_width = 200.0;
4043// while editor_width <= 1000.0 {
4044// update_test_language_settings(cx, |s| {
4045// s.defaults.tab_size = NonZeroU32::new(tab_size);
4046// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4047// s.defaults.preferred_line_length = Some(editor_width as u32);
4048// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4049// });
4050
4051// let actual_invisibles =
4052// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
4053
4054// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4055// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4056// let mut i = 0;
4057// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4058// i = actual_index;
4059// match expected_invisibles.get(i) {
4060// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4061// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4062// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4063// _ => {
4064// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4065// }
4066// },
4067// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4068// }
4069// }
4070// let missing_expected_invisibles = &expected_invisibles[i + 1..];
4071// assert!(
4072// missing_expected_invisibles.is_empty,
4073// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4074// );
4075
4076// editor_width += resize_step;
4077// }
4078// }
4079
4080// fn collect_invisibles_from_new_editor(
4081// cx: &mut TestAppContext,
4082// editor_mode: EditorMode,
4083// input_text: &str,
4084// editor_width: f32,
4085// ) -> Vec<Invisible> {
4086// info!(
4087// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
4088// );
4089// let editor = cx
4090// .add_window(|cx| {
4091// let buffer = MultiBuffer::build_simple(&input_text, cx);
4092// Editor::new(editor_mode, buffer, None, None, cx)
4093// })
4094// .root(cx);
4095
4096// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
4097// let (_, layout_state) = editor.update(cx, |editor, cx| {
4098// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4099// editor.set_wrap_width(Some(editor_width), cx);
4100
4101// element.layout(
4102// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
4103// editor,
4104// cx,
4105// )
4106// });
4107
4108// layout_state
4109// .position_map
4110// .line_layouts
4111// .iter()
4112// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
4113// .flatten()
4114// .cloned()
4115// .collect()
4116// }
4117// }
4118
4119fn build_key_listener<T: 'static>(
4120 listener: impl Fn(
4121 &mut Editor,
4122 &T,
4123 &[&DispatchContext],
4124 DispatchPhase,
4125 &mut ViewContext<Editor>,
4126 ) -> Option<Box<dyn Action>>
4127 + 'static,
4128) -> (TypeId, KeyListener<Editor>) {
4129 (
4130 TypeId::of::<T>(),
4131 Box::new(move |editor, event, dispatch_context, phase, cx| {
4132 let key_event = event.downcast_ref::<T>()?;
4133 listener(editor, key_event, dispatch_context, phase, cx)
4134 }),
4135 )
4136}
4137
4138fn build_action_listener<T: Action>(
4139 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4140) -> (TypeId, KeyListener<Editor>) {
4141 build_key_listener(move |editor, action: &T, dispatch_context, phase, cx| {
4142 if phase == DispatchPhase::Bubble {
4143 listener(editor, action, cx);
4144 }
4145 None
4146 })
4147}