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