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