1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::ShowScrollbar,
7 git::{diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::hover_at,
9 link_go_to_definition::{
10 go_to_fetched_definition, go_to_fetched_type_definition, update_go_to_definition_link,
11 update_inlay_link_and_hover_points, GoToDefinitionTrigger,
12 },
13 scroll::scroll_amount::ScrollAmount,
14 CursorShape, DisplayPoint, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
15 HalfPageDown, HalfPageUp, LineDown, LineUp, MoveDown, OpenExcerpts, PageDown, PageUp, Point,
16 SelectPhase, Selection, SoftWrap, ToPoint, MAX_LINE_LEN,
17};
18use anyhow::Result;
19use collections::{BTreeMap, HashMap};
20use gpui::{
21 div, point, px, relative, size, transparent_black, Action, AnyElement, AvailableSpace,
22 BorrowWindow, Bounds, Component, ContentMask, Corners, DispatchPhase, Edges, Element,
23 ElementId, ElementInputHandler, Entity, EntityId, Hsla, InteractiveElement, LineLayout,
24 MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, RenderOnce,
25 ScrollWheelEvent, ShapedLine, SharedString, Size, StatefulInteractiveElement, Style, Styled,
26 TextRun, TextStyle, View, ViewContext, WindowContext, WrappedLine,
27};
28use itertools::Itertools;
29use language::language_settings::ShowWhitespaceSetting;
30use multi_buffer::Anchor;
31use project::{
32 project_settings::{GitGutterSetting, ProjectSettings},
33 ProjectPath,
34};
35use settings::Settings;
36use smallvec::SmallVec;
37use std::{
38 any::TypeId,
39 borrow::Cow,
40 cmp::{self, Ordering},
41 fmt::Write,
42 iter,
43 ops::Range,
44 sync::Arc,
45};
46use sum_tree::Bias;
47use theme::{ActiveTheme, PlayerColor};
48use ui::{h_stack, IconButton, Tooltip};
49use util::ResultExt;
50use workspace::item::Item;
51
52enum FoldMarkers {}
53
54struct SelectionLayout {
55 head: DisplayPoint,
56 cursor_shape: CursorShape,
57 is_newest: bool,
58 is_local: bool,
59 range: Range<DisplayPoint>,
60 active_rows: Range<u32>,
61}
62
63impl SelectionLayout {
64 fn new<T: ToPoint + ToDisplayPoint + Clone>(
65 selection: Selection<T>,
66 line_mode: bool,
67 cursor_shape: CursorShape,
68 map: &DisplaySnapshot,
69 is_newest: bool,
70 is_local: bool,
71 ) -> Self {
72 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
73 let display_selection = point_selection.map(|p| p.to_display_point(map));
74 let mut range = display_selection.range();
75 let mut head = display_selection.head();
76 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
77 ..map.next_line_boundary(point_selection.end).1.row();
78
79 // vim visual line mode
80 if line_mode {
81 let point_range = map.expand_to_line(point_selection.range());
82 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
83 }
84
85 // any vim visual mode (including line mode)
86 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
87 if head.column() > 0 {
88 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
89 } else if head.row() > 0 && head != map.max_point() {
90 head = map.clip_point(
91 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
92 Bias::Left,
93 );
94 // updating range.end is a no-op unless you're cursor is
95 // on the newline containing a multi-buffer divider
96 // in which case the clip_point may have moved the head up
97 // an additional row.
98 range.end = DisplayPoint::new(head.row() + 1, 0);
99 active_rows.end = head.row();
100 }
101 }
102
103 Self {
104 head,
105 cursor_shape,
106 is_newest,
107 is_local,
108 range,
109 active_rows,
110 }
111 }
112}
113
114pub struct EditorElement {
115 editor_id: EntityId,
116 style: EditorStyle,
117}
118
119impl EditorElement {
120 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
121 Self {
122 editor_id: editor.entity_id(),
123 style,
124 }
125 }
126
127 fn mouse_down(
128 editor: &mut Editor,
129 event: &MouseDownEvent,
130 position_map: &PositionMap,
131 text_bounds: Bounds<Pixels>,
132 gutter_bounds: Bounds<Pixels>,
133 cx: &mut ViewContext<Editor>,
134 ) -> bool {
135 let mut click_count = event.click_count;
136 let modifiers = event.modifiers;
137
138 if gutter_bounds.contains_point(&event.position) {
139 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
140 } else if !text_bounds.contains_point(&event.position) {
141 return false;
142 }
143
144 let point_for_position = position_map.point_for_position(text_bounds, event.position);
145 let position = point_for_position.previous_valid;
146 if modifiers.shift && modifiers.alt {
147 editor.select(
148 SelectPhase::BeginColumnar {
149 position,
150 goal_column: point_for_position.exact_unclipped.column(),
151 },
152 cx,
153 );
154 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
155 editor.select(
156 SelectPhase::Extend {
157 position,
158 click_count,
159 },
160 cx,
161 );
162 } else {
163 editor.select(
164 SelectPhase::Begin {
165 position,
166 add: modifiers.alt,
167 click_count,
168 },
169 cx,
170 );
171 }
172
173 true
174 }
175
176 // fn mouse_right_down(
177 // editor: &mut Editor,
178 // position: gpui::Point<Pixels>,
179 // position_map: &PositionMap,
180 // text_bounds: Bounds<Pixels>,
181 // cx: &mut EventContext<Editor>,
182 // ) -> bool {
183 // if !text_bounds.contains_point(position) {
184 // return false;
185 // }
186 // let point_for_position = position_map.point_for_position(text_bounds, position);
187 // mouse_context_menu::deploy_context_menu(
188 // editor,
189 // position,
190 // point_for_position.previous_valid,
191 // cx,
192 // );
193 // true
194 // }
195
196 fn mouse_up(
197 editor: &mut Editor,
198 event: &MouseUpEvent,
199 position_map: &PositionMap,
200 text_bounds: Bounds<Pixels>,
201 cx: &mut ViewContext<Editor>,
202 ) -> bool {
203 let end_selection = editor.has_pending_selection();
204 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
205
206 if end_selection {
207 editor.select(SelectPhase::End, cx);
208 }
209
210 if !pending_nonempty_selections
211 && event.modifiers.command
212 && text_bounds.contains_point(&event.position)
213 {
214 let point = position_map.point_for_position(text_bounds, event.position);
215 let could_be_inlay = point.as_valid().is_none();
216 let split = event.modifiers.alt;
217 if event.modifiers.shift || could_be_inlay {
218 go_to_fetched_type_definition(editor, point, split, cx);
219 } else {
220 go_to_fetched_definition(editor, point, split, cx);
221 }
222
223 return true;
224 }
225
226 end_selection
227 }
228
229 fn mouse_moved(
230 editor: &mut Editor,
231 event: &MouseMoveEvent,
232 position_map: &PositionMap,
233 text_bounds: Bounds<Pixels>,
234 gutter_bounds: Bounds<Pixels>,
235 cx: &mut ViewContext<Editor>,
236 ) -> bool {
237 let modifiers = event.modifiers;
238 if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
239 let point_for_position = position_map.point_for_position(text_bounds, event.position);
240 let mut scroll_delta = gpui::Point::<f32>::zero();
241 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
242 let top = text_bounds.origin.y + vertical_margin;
243 let bottom = text_bounds.lower_left().y - vertical_margin;
244 if event.position.y < top {
245 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
246 }
247 if event.position.y > bottom {
248 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
249 }
250
251 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
252 let left = text_bounds.origin.x + horizontal_margin;
253 let right = text_bounds.upper_right().x - horizontal_margin;
254 if event.position.x < left {
255 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
256 }
257 if event.position.x > right {
258 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
259 }
260
261 editor.select(
262 SelectPhase::Update {
263 position: point_for_position.previous_valid,
264 goal_column: point_for_position.exact_unclipped.column(),
265 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
266 .clamp(&gpui::Point::zero(), &position_map.scroll_max),
267 },
268 cx,
269 );
270 }
271
272 let text_hovered = text_bounds.contains_point(&event.position);
273 let gutter_hovered = gutter_bounds.contains_point(&event.position);
274 editor.set_gutter_hovered(gutter_hovered, cx);
275
276 // Don't trigger hover popover if mouse is hovering over context menu
277 if text_hovered {
278 let point_for_position = position_map.point_for_position(text_bounds, event.position);
279
280 match point_for_position.as_valid() {
281 Some(point) => {
282 update_go_to_definition_link(
283 editor,
284 Some(GoToDefinitionTrigger::Text(point)),
285 modifiers.command,
286 modifiers.shift,
287 cx,
288 );
289 hover_at(editor, Some(point), cx);
290 }
291 None => {
292 update_inlay_link_and_hover_points(
293 &position_map.snapshot,
294 point_for_position,
295 editor,
296 modifiers.command,
297 modifiers.shift,
298 cx,
299 );
300 }
301 }
302
303 true
304 } else {
305 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
306 hover_at(editor, None, cx);
307 gutter_hovered
308 }
309 }
310
311 fn scroll(
312 editor: &mut Editor,
313 event: &ScrollWheelEvent,
314 position_map: &PositionMap,
315 bounds: Bounds<Pixels>,
316 cx: &mut ViewContext<Editor>,
317 ) -> bool {
318 if !bounds.contains_point(&event.position) {
319 return false;
320 }
321
322 let line_height = position_map.line_height;
323 let max_glyph_width = position_map.em_width;
324 let (delta, axis) = match event.delta {
325 gpui::ScrollDelta::Pixels(mut pixels) => {
326 //Trackpad
327 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
328 (pixels, axis)
329 }
330
331 gpui::ScrollDelta::Lines(lines) => {
332 //Not trackpad
333 let pixels = point(lines.x * max_glyph_width, lines.y * line_height);
334 (pixels, None)
335 }
336 };
337
338 let scroll_position = position_map.snapshot.scroll_position();
339 let x = f32::from((scroll_position.x * max_glyph_width - delta.x) / max_glyph_width);
340 let y = f32::from((scroll_position.y * line_height - delta.y) / line_height);
341 let scroll_position = point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
342 editor.scroll(scroll_position, axis, cx);
343
344 true
345 }
346
347 fn paint_background(
348 &self,
349 gutter_bounds: Bounds<Pixels>,
350 text_bounds: Bounds<Pixels>,
351 layout: &LayoutState,
352 cx: &mut ViewContext<Editor>,
353 ) {
354 let bounds = gutter_bounds.union(&text_bounds);
355 let scroll_top =
356 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
357 let gutter_bg = cx.theme().colors().editor_gutter_background;
358 cx.paint_quad(
359 gutter_bounds,
360 Corners::default(),
361 gutter_bg,
362 Edges::default(),
363 transparent_black(),
364 );
365 cx.paint_quad(
366 text_bounds,
367 Corners::default(),
368 self.style.background,
369 Edges::default(),
370 transparent_black(),
371 );
372
373 if let EditorMode::Full = layout.mode {
374 let mut active_rows = layout.active_rows.iter().peekable();
375 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
376 let mut end_row = *start_row;
377 while active_rows.peek().map_or(false, |r| {
378 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
379 }) {
380 active_rows.next().unwrap();
381 end_row += 1;
382 }
383
384 if !contains_non_empty_selection {
385 let origin = point(
386 bounds.origin.x,
387 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
388 - scroll_top,
389 );
390 let size = size(
391 bounds.size.width,
392 layout.position_map.line_height * (end_row - start_row + 1) as f32,
393 );
394 let active_line_bg = cx.theme().colors().editor_active_line_background;
395 cx.paint_quad(
396 Bounds { origin, size },
397 Corners::default(),
398 active_line_bg,
399 Edges::default(),
400 transparent_black(),
401 );
402 }
403 }
404
405 if let Some(highlighted_rows) = &layout.highlighted_rows {
406 let origin = point(
407 bounds.origin.x,
408 bounds.origin.y
409 + (layout.position_map.line_height * highlighted_rows.start as f32)
410 - scroll_top,
411 );
412 let size = size(
413 bounds.size.width,
414 layout.position_map.line_height * highlighted_rows.len() as f32,
415 );
416 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
417 cx.paint_quad(
418 Bounds { origin, size },
419 Corners::default(),
420 highlighted_line_bg,
421 Edges::default(),
422 transparent_black(),
423 );
424 }
425
426 let scroll_left =
427 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
428
429 for (wrap_position, active) in layout.wrap_guides.iter() {
430 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
431 - scroll_left;
432
433 if x < text_bounds.origin.x
434 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
435 {
436 continue;
437 }
438
439 let color = if *active {
440 cx.theme().colors().editor_active_wrap_guide
441 } else {
442 cx.theme().colors().editor_wrap_guide
443 };
444 cx.paint_quad(
445 Bounds {
446 origin: point(x, text_bounds.origin.y),
447 size: size(px(1.), text_bounds.size.height),
448 },
449 Corners::default(),
450 color,
451 Edges::default(),
452 transparent_black(),
453 );
454 }
455 }
456 }
457
458 fn paint_gutter(
459 &mut self,
460 bounds: Bounds<Pixels>,
461 layout: &mut LayoutState,
462 editor: &mut Editor,
463 cx: &mut ViewContext<Editor>,
464 ) {
465 let line_height = layout.position_map.line_height;
466
467 let scroll_position = layout.position_map.snapshot.scroll_position();
468 let scroll_top = scroll_position.y * line_height;
469
470 let show_gutter = matches!(
471 ProjectSettings::get_global(cx).git.git_gutter,
472 Some(GitGutterSetting::TrackedFiles)
473 );
474
475 if show_gutter {
476 Self::paint_diff_hunks(bounds, layout, cx);
477 }
478
479 for (ix, line) in layout.line_numbers.iter().enumerate() {
480 if let Some(line) = line {
481 let line_origin = bounds.origin
482 + point(
483 bounds.size.width - line.width - layout.gutter_padding,
484 ix as f32 * line_height - (scroll_top % line_height),
485 );
486
487 line.paint(line_origin, line_height, cx);
488 }
489 }
490
491 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
492 if let Some(mut fold_indicator) = fold_indicator {
493 let mut fold_indicator = fold_indicator.render_into_any();
494 let available_space = size(
495 AvailableSpace::MinContent,
496 AvailableSpace::Definite(line_height * 0.55),
497 );
498 let fold_indicator_size = fold_indicator.measure(available_space, editor, cx);
499
500 let position = point(
501 bounds.size.width - layout.gutter_padding,
502 ix as f32 * line_height - (scroll_top % line_height),
503 );
504 let centering_offset = point(
505 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width) / 2.,
506 (line_height - fold_indicator_size.height) / 2.,
507 );
508 let origin = bounds.origin + position + centering_offset;
509 fold_indicator.draw(origin, available_space, editor, cx);
510 }
511 }
512
513 if let Some(indicator) = layout.code_actions_indicator.take() {
514 let mut button = indicator.button.render_into_any();
515 let available_space = size(
516 AvailableSpace::MinContent,
517 AvailableSpace::Definite(line_height),
518 );
519 let indicator_size = button.measure(available_space, editor, cx);
520
521 let mut x = Pixels::ZERO;
522 let mut y = indicator.row as f32 * line_height - scroll_top;
523 // Center indicator.
524 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
525 y += (line_height - indicator_size.height) / 2.;
526
527 button.draw(bounds.origin + point(x, y), available_space, editor, cx);
528 }
529 }
530
531 fn paint_diff_hunks(
532 bounds: Bounds<Pixels>,
533 layout: &LayoutState,
534 cx: &mut ViewContext<Editor>,
535 ) {
536 // todo!()
537 // let diff_style = &theme::current(cx).editor.diff.clone();
538 // let line_height = layout.position_map.line_height;
539
540 // let scroll_position = layout.position_map.snapshot.scroll_position();
541 // let scroll_top = scroll_position.y * line_height;
542
543 // for hunk in &layout.display_hunks {
544 // let (display_row_range, status) = match hunk {
545 // //TODO: This rendering is entirely a horrible hack
546 // &DisplayDiffHunk::Folded { display_row: row } => {
547 // let start_y = row as f32 * line_height - scroll_top;
548 // let end_y = start_y + line_height;
549
550 // let width = diff_style.removed_width_em * line_height;
551 // let highlight_origin = bounds.origin + point(-width, start_y);
552 // let highlight_size = point(width * 2., end_y - start_y);
553 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
554
555 // cx.paint_quad(Quad {
556 // bounds: highlight_bounds,
557 // background: Some(diff_style.modified),
558 // border: Border::new(0., Color::transparent_black()).into(),
559 // corner_radii: (1. * line_height).into(),
560 // });
561
562 // continue;
563 // }
564
565 // DisplayDiffHunk::Unfolded {
566 // display_row_range,
567 // status,
568 // } => (display_row_range, status),
569 // };
570
571 // let color = match status {
572 // DiffHunkStatus::Added => diff_style.inserted,
573 // DiffHunkStatus::Modified => diff_style.modified,
574
575 // //TODO: This rendering is entirely a horrible hack
576 // DiffHunkStatus::Removed => {
577 // let row = display_row_range.start;
578
579 // let offset = line_height / 2.;
580 // let start_y = row as f32 * line_height - offset - scroll_top;
581 // let end_y = start_y + line_height;
582
583 // let width = diff_style.removed_width_em * line_height;
584 // let highlight_origin = bounds.origin + point(-width, start_y);
585 // let highlight_size = point(width * 2., end_y - start_y);
586 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
587
588 // cx.paint_quad(Quad {
589 // bounds: highlight_bounds,
590 // background: Some(diff_style.deleted),
591 // border: Border::new(0., Color::transparent_black()).into(),
592 // corner_radii: (1. * line_height).into(),
593 // });
594
595 // continue;
596 // }
597 // };
598
599 // let start_row = display_row_range.start;
600 // let end_row = display_row_range.end;
601
602 // let start_y = start_row as f32 * line_height - scroll_top;
603 // let end_y = end_row as f32 * line_height - scroll_top;
604
605 // let width = diff_style.width_em * line_height;
606 // let highlight_origin = bounds.origin + point(-width, start_y);
607 // let highlight_size = point(width * 2., end_y - start_y);
608 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
609
610 // cx.paint_quad(Quad {
611 // bounds: highlight_bounds,
612 // background: Some(color),
613 // border: Border::new(0., Color::transparent_black()).into(),
614 // corner_radii: (diff_style.corner_radius * line_height).into(),
615 // });
616 // }
617 }
618
619 fn paint_text(
620 &mut self,
621 text_bounds: Bounds<Pixels>,
622 layout: &mut LayoutState,
623 editor: &mut Editor,
624 cx: &mut ViewContext<Editor>,
625 ) {
626 let scroll_position = layout.position_map.snapshot.scroll_position();
627 let start_row = layout.visible_display_row_range.start;
628 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
629 let line_end_overshoot = 0.15 * layout.position_map.line_height;
630 let whitespace_setting = editor.buffer.read(cx).settings_at(0, cx).show_whitespaces;
631
632 cx.with_content_mask(
633 Some(ContentMask {
634 bounds: text_bounds,
635 }),
636 |cx| {
637 // todo!("cursor region")
638 // cx.scene().push_cursor_region(CursorRegion {
639 // bounds,
640 // style: if !editor.link_go_to_definition_state.definitions.is_empty {
641 // CursorStyle::PointingHand
642 // } else {
643 // CursorStyle::IBeam
644 // },
645 // });
646
647 let fold_corner_radius = 0.15 * layout.position_map.line_height;
648 cx.with_element_id(Some("folds"), |cx| {
649 let snapshot = &layout.position_map.snapshot;
650 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
651 let fold_range = fold.range.clone();
652 let display_range = fold.range.start.to_display_point(&snapshot)
653 ..fold.range.end.to_display_point(&snapshot);
654 debug_assert_eq!(display_range.start.row(), display_range.end.row());
655 let row = display_range.start.row();
656
657 let line_layout = &layout.position_map.line_layouts
658 [(row - layout.visible_display_row_range.start) as usize]
659 .line;
660 let start_x = content_origin.x
661 + line_layout.x_for_index(display_range.start.column() as usize)
662 - layout.position_map.scroll_position.x;
663 let start_y = content_origin.y
664 + row as f32 * layout.position_map.line_height
665 - layout.position_map.scroll_position.y;
666 let end_x = content_origin.x
667 + line_layout.x_for_index(display_range.end.column() as usize)
668 - layout.position_map.scroll_position.x;
669
670 let fold_bounds = Bounds {
671 origin: point(start_x, start_y),
672 size: size(end_x - start_x, layout.position_map.line_height),
673 };
674
675 let fold_background = cx.with_z_index(1, |cx| {
676 div()
677 .id(fold.id)
678 .size_full()
679 .on_mouse_down(MouseButton::Left, |_, _, cx| cx.stop_propagation())
680 .on_click(move |editor: &mut Editor, _, cx| {
681 editor.unfold_ranges(
682 [fold_range.start..fold_range.end],
683 true,
684 false,
685 cx,
686 );
687 cx.stop_propagation();
688 })
689 .draw(
690 fold_bounds.origin,
691 fold_bounds.size,
692 editor,
693 cx,
694 |fold_element_state, cx| {
695 if fold_element_state.is_active() {
696 gpui::blue()
697 } else if fold_bounds.contains_point(&cx.mouse_position()) {
698 gpui::black()
699 } else {
700 gpui::red()
701 }
702 },
703 )
704 });
705
706 self.paint_highlighted_range(
707 display_range.clone(),
708 fold_background,
709 fold_corner_radius,
710 fold_corner_radius * 2.,
711 layout,
712 content_origin,
713 text_bounds,
714 cx,
715 );
716 }
717 });
718
719 for (range, color) in &layout.highlighted_ranges {
720 self.paint_highlighted_range(
721 range.clone(),
722 *color,
723 Pixels::ZERO,
724 line_end_overshoot,
725 layout,
726 content_origin,
727 text_bounds,
728 cx,
729 );
730 }
731
732 let mut cursors = SmallVec::<[Cursor; 32]>::new();
733 let corner_radius = 0.15 * layout.position_map.line_height;
734 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
735
736 for (selection_style, selections) in &layout.selections {
737 for selection in selections {
738 self.paint_highlighted_range(
739 selection.range.clone(),
740 selection_style.selection,
741 corner_radius,
742 corner_radius * 2.,
743 layout,
744 content_origin,
745 text_bounds,
746 cx,
747 );
748
749 if selection.is_local && !selection.range.is_empty() {
750 invisible_display_ranges.push(selection.range.clone());
751 }
752
753 if !selection.is_local || editor.show_local_cursors(cx) {
754 let cursor_position = selection.head;
755 if layout
756 .visible_display_row_range
757 .contains(&cursor_position.row())
758 {
759 let cursor_row_layout = &layout.position_map.line_layouts
760 [(cursor_position.row() - start_row) as usize]
761 .line;
762 let cursor_column = cursor_position.column() as usize;
763
764 let cursor_character_x =
765 cursor_row_layout.x_for_index(cursor_column);
766 let mut block_width = cursor_row_layout
767 .x_for_index(cursor_column + 1)
768 - cursor_character_x;
769 if block_width == Pixels::ZERO {
770 block_width = layout.position_map.em_width;
771 }
772 let block_text = if let CursorShape::Block = selection.cursor_shape
773 {
774 layout
775 .position_map
776 .snapshot
777 .chars_at(cursor_position)
778 .next()
779 .and_then(|(character, _)| {
780 let text = SharedString::from(character.to_string());
781 let len = text.len();
782 cx.text_system()
783 .shape_line(
784 text,
785 cursor_row_layout.font_size,
786 &[TextRun {
787 len,
788 font: self.style.text.font(),
789 color: self.style.background,
790 background_color: None,
791 underline: None,
792 }],
793 )
794 .log_err()
795 })
796 } else {
797 None
798 };
799
800 let x = cursor_character_x - layout.position_map.scroll_position.x;
801 let y = cursor_position.row() as f32
802 * layout.position_map.line_height
803 - layout.position_map.scroll_position.y;
804 if selection.is_newest {
805 editor.pixel_position_of_newest_cursor = Some(point(
806 text_bounds.origin.x + x + block_width / 2.,
807 text_bounds.origin.y
808 + y
809 + layout.position_map.line_height / 2.,
810 ));
811 }
812 cursors.push(Cursor {
813 color: selection_style.cursor,
814 block_width,
815 origin: point(x, y),
816 line_height: layout.position_map.line_height,
817 shape: selection.cursor_shape,
818 block_text,
819 });
820 }
821 }
822 }
823 }
824
825 for (ix, line_with_invisibles) in
826 layout.position_map.line_layouts.iter().enumerate()
827 {
828 let row = start_row + ix as u32;
829 line_with_invisibles.draw(
830 layout,
831 row,
832 content_origin,
833 whitespace_setting,
834 &invisible_display_ranges,
835 cx,
836 )
837 }
838
839 cx.with_z_index(0, |cx| {
840 for cursor in cursors {
841 cursor.paint(content_origin, cx);
842 }
843 });
844
845 if let Some((position, mut context_menu)) = layout.context_menu.take() {
846 cx.with_z_index(1, |cx| {
847 let line_height = self.style.text.line_height_in_pixels(cx.rem_size());
848 let available_space = size(
849 AvailableSpace::MinContent,
850 AvailableSpace::Definite(
851 (12. * line_height)
852 .min((text_bounds.size.height - line_height) / 2.),
853 ),
854 );
855 let context_menu_size = context_menu.measure(available_space, editor, cx);
856
857 let cursor_row_layout = &layout.position_map.line_layouts
858 [(position.row() - start_row) as usize]
859 .line;
860 let x = cursor_row_layout.x_for_index(position.column() as usize)
861 - layout.position_map.scroll_position.x;
862 let y = (position.row() + 1) as f32 * layout.position_map.line_height
863 - layout.position_map.scroll_position.y;
864 let mut list_origin = content_origin + point(x, y);
865 let list_width = context_menu_size.width;
866 let list_height = context_menu_size.height;
867
868 // Snap the right edge of the list to the right edge of the window if
869 // its horizontal bounds overflow.
870 if list_origin.x + list_width > cx.viewport_size().width {
871 list_origin.x =
872 (cx.viewport_size().width - list_width).max(Pixels::ZERO);
873 }
874
875 if list_origin.y + list_height > text_bounds.lower_right().y {
876 list_origin.y -= layout.position_map.line_height - list_height;
877 }
878
879 context_menu.draw(list_origin, available_space, editor, cx);
880 })
881 }
882
883 // if let Some((position, hover_popovers)) = layout.hover_popovers.as_mut() {
884 // cx.scene().push_stacking_context(None, None);
885
886 // // This is safe because we check on layout whether the required row is available
887 // let hovered_row_layout =
888 // &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
889
890 // // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
891 // // height. This is the size we will use to decide whether to render popovers above or below
892 // // the hovered line.
893 // let first_size = hover_popovers[0].size();
894 // let height_to_reserve = first_size.y
895 // + 1.5 * MIN_POPOVER_LINE_HEIGHT as f32 * layout.position_map.line_height;
896
897 // // Compute Hovered Point
898 // let x = hovered_row_layout.x_for_index(position.column() as usize) - scroll_left;
899 // let y = position.row() as f32 * layout.position_map.line_height - scroll_top;
900 // let hovered_point = content_origin + point(x, y);
901
902 // if hovered_point.y - height_to_reserve > 0.0 {
903 // // There is enough space above. Render popovers above the hovered point
904 // let mut current_y = hovered_point.y;
905 // for hover_popover in hover_popovers {
906 // let size = hover_popover.size();
907 // let mut popover_origin = point(hovered_point.x, current_y - size.y);
908
909 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
910 // if x_out_of_bounds < 0.0 {
911 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
912 // }
913
914 // hover_popover.paint(
915 // popover_origin,
916 // Bounds::<Pixels>::from_points(
917 // gpui::Point::<Pixels>::zero(),
918 // point(f32::MAX, f32::MAX),
919 // ), // Let content bleed outside of editor
920 // editor,
921 // cx,
922 // );
923
924 // current_y = popover_origin.y - HOVER_POPOVER_GAP;
925 // }
926 // } else {
927 // // There is not enough space above. Render popovers below the hovered point
928 // let mut current_y = hovered_point.y + layout.position_map.line_height;
929 // for hover_popover in hover_popovers {
930 // let size = hover_popover.size();
931 // let mut popover_origin = point(hovered_point.x, current_y);
932
933 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
934 // if x_out_of_bounds < 0.0 {
935 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
936 // }
937
938 // hover_popover.paint(
939 // popover_origin,
940 // Bounds::<Pixels>::from_points(
941 // gpui::Point::<Pixels>::zero(),
942 // point(f32::MAX, f32::MAX),
943 // ), // Let content bleed outside of editor
944 // editor,
945 // cx,
946 // );
947
948 // current_y = popover_origin.y + size.y + HOVER_POPOVER_GAP;
949 // }
950 // }
951
952 // cx.scene().pop_stacking_context();
953 // }
954 },
955 )
956 }
957
958 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
959 bounds.upper_right().x - self.style.scrollbar_width
960 }
961
962 // fn paint_scrollbar(
963 // &mut self,
964 // bounds: Bounds<Pixels>,
965 // layout: &mut LayoutState,
966 // editor: &Editor,
967 // cx: &mut ViewContext<Editor>,
968 // ) {
969 // enum ScrollbarMouseHandlers {}
970 // if layout.mode != EditorMode::Full {
971 // return;
972 // }
973
974 // let style = &self.style.theme.scrollbar;
975
976 // let top = bounds.min_y;
977 // let bottom = bounds.max_y;
978 // let right = bounds.max_x;
979 // let left = self.scrollbar_left(&bounds);
980 // let row_range = &layout.scrollbar_row_range;
981 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
982
983 // let mut height = bounds.height();
984 // let mut first_row_y_offset = 0.0;
985
986 // // Impose a minimum height on the scrollbar thumb
987 // let row_height = height / max_row;
988 // let min_thumb_height =
989 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
990 // let thumb_height = (row_range.end - row_range.start) * row_height;
991 // if thumb_height < min_thumb_height {
992 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
993 // height -= min_thumb_height - thumb_height;
994 // }
995
996 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
997
998 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
999 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1000 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
1001 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
1002
1003 // if layout.show_scrollbars {
1004 // cx.paint_quad(Quad {
1005 // bounds: track_bounds,
1006 // border: style.track.border.into(),
1007 // background: style.track.background_color,
1008 // ..Default::default()
1009 // });
1010 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
1011 // let theme = theme::current(cx);
1012 // let scrollbar_theme = &theme.editor.scrollbar;
1013 // if layout.is_singleton && scrollbar_settings.selections {
1014 // let start_anchor = Anchor::min();
1015 // let end_anchor = Anchor::max;
1016 // let color = scrollbar_theme.selections;
1017 // let border = Border {
1018 // width: 1.,
1019 // color: style.thumb.border.color,
1020 // overlay: false,
1021 // top: false,
1022 // right: true,
1023 // bottom: false,
1024 // left: true,
1025 // };
1026 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
1027 // let start_y = y_for_row(start.row() as f32);
1028 // let mut end_y = y_for_row(end.row() as f32);
1029 // if end_y - start_y < 1. {
1030 // end_y = start_y + 1.;
1031 // }
1032 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1033
1034 // cx.paint_quad(Quad {
1035 // bounds,
1036 // background: Some(color),
1037 // border: border.into(),
1038 // corner_radii: style.thumb.corner_radii.into(),
1039 // })
1040 // };
1041 // let background_ranges = editor
1042 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1043 // start_anchor..end_anchor,
1044 // &layout.position_map.snapshot,
1045 // 50000,
1046 // );
1047 // for row in background_ranges {
1048 // let start = row.start();
1049 // let end = row.end();
1050 // push_region(*start, *end);
1051 // }
1052 // }
1053
1054 // if layout.is_singleton && scrollbar_settings.git_diff {
1055 // let diff_style = scrollbar_theme.git.clone();
1056 // for hunk in layout
1057 // .position_map
1058 // .snapshot
1059 // .buffer_snapshot
1060 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1061 // {
1062 // let start_display = Point::new(hunk.buffer_range.start, 0)
1063 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1064 // let end_display = Point::new(hunk.buffer_range.end, 0)
1065 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1066 // let start_y = y_for_row(start_display.row() as f32);
1067 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1068 // y_for_row((end_display.row() + 1) as f32)
1069 // } else {
1070 // y_for_row((end_display.row()) as f32)
1071 // };
1072
1073 // if end_y - start_y < 1. {
1074 // end_y = start_y + 1.;
1075 // }
1076 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1077
1078 // let color = match hunk.status() {
1079 // DiffHunkStatus::Added => diff_style.inserted,
1080 // DiffHunkStatus::Modified => diff_style.modified,
1081 // DiffHunkStatus::Removed => diff_style.deleted,
1082 // };
1083
1084 // let border = Border {
1085 // width: 1.,
1086 // color: style.thumb.border.color,
1087 // overlay: false,
1088 // top: false,
1089 // right: true,
1090 // bottom: false,
1091 // left: true,
1092 // };
1093
1094 // cx.paint_quad(Quad {
1095 // bounds,
1096 // background: Some(color),
1097 // border: border.into(),
1098 // corner_radii: style.thumb.corner_radii.into(),
1099 // })
1100 // }
1101 // }
1102
1103 // cx.paint_quad(Quad {
1104 // bounds: thumb_bounds,
1105 // border: style.thumb.border.into(),
1106 // background: style.thumb.background_color,
1107 // corner_radii: style.thumb.corner_radii.into(),
1108 // });
1109 // }
1110
1111 // cx.scene().push_cursor_region(CursorRegion {
1112 // bounds: track_bounds,
1113 // style: CursorStyle::Arrow,
1114 // });
1115 // let region_id = cx.view_id();
1116 // cx.scene().push_mouse_region(
1117 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1118 // .on_move(move |event, editor: &mut Editor, cx| {
1119 // if event.pressed_button.is_none() {
1120 // editor.scroll_manager.show_scrollbar(cx);
1121 // }
1122 // })
1123 // .on_down(MouseButton::Left, {
1124 // let row_range = row_range.clone();
1125 // move |event, editor: &mut Editor, cx| {
1126 // let y = event.position.y;
1127 // if y < thumb_top || thumb_bottom < y {
1128 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1129 // let top_row = center_row
1130 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1131 // let mut position = editor.scroll_position(cx);
1132 // position.set_y(top_row as f32);
1133 // editor.set_scroll_position(position, cx);
1134 // } else {
1135 // editor.scroll_manager.show_scrollbar(cx);
1136 // }
1137 // }
1138 // })
1139 // .on_drag(MouseButton::Left, {
1140 // move |event, editor: &mut Editor, cx| {
1141 // if event.end {
1142 // return;
1143 // }
1144
1145 // let y = event.prev_mouse_position.y;
1146 // let new_y = event.position.y;
1147 // if thumb_top < y && y < thumb_bottom {
1148 // let mut position = editor.scroll_position(cx);
1149 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1150 // if position.y < 0.0 {
1151 // position.set_y(0.);
1152 // }
1153 // editor.set_scroll_position(position, cx);
1154 // }
1155 // }
1156 // }),
1157 // );
1158 // }
1159
1160 #[allow(clippy::too_many_arguments)]
1161 fn paint_highlighted_range(
1162 &self,
1163 range: Range<DisplayPoint>,
1164 color: Hsla,
1165 corner_radius: Pixels,
1166 line_end_overshoot: Pixels,
1167 layout: &LayoutState,
1168 content_origin: gpui::Point<Pixels>,
1169 bounds: Bounds<Pixels>,
1170 cx: &mut ViewContext<Editor>,
1171 ) {
1172 let start_row = layout.visible_display_row_range.start;
1173 let end_row = layout.visible_display_row_range.end;
1174 if range.start != range.end {
1175 let row_range = if range.end.column() == 0 {
1176 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1177 } else {
1178 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1179 };
1180
1181 let highlighted_range = HighlightedRange {
1182 color,
1183 line_height: layout.position_map.line_height,
1184 corner_radius,
1185 start_y: content_origin.y
1186 + row_range.start as f32 * layout.position_map.line_height
1187 - layout.position_map.scroll_position.y,
1188 lines: row_range
1189 .into_iter()
1190 .map(|row| {
1191 let line_layout =
1192 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1193 HighlightedRangeLine {
1194 start_x: if row == range.start.row() {
1195 content_origin.x
1196 + line_layout.x_for_index(range.start.column() as usize)
1197 - layout.position_map.scroll_position.x
1198 } else {
1199 content_origin.x - layout.position_map.scroll_position.x
1200 },
1201 end_x: if row == range.end.row() {
1202 content_origin.x
1203 + line_layout.x_for_index(range.end.column() as usize)
1204 - layout.position_map.scroll_position.x
1205 } else {
1206 content_origin.x + line_layout.width + line_end_overshoot
1207 - layout.position_map.scroll_position.x
1208 },
1209 }
1210 })
1211 .collect(),
1212 };
1213
1214 highlighted_range.paint(bounds, cx);
1215 }
1216 }
1217
1218 fn paint_blocks(
1219 &mut self,
1220 bounds: Bounds<Pixels>,
1221 layout: &mut LayoutState,
1222 editor: &mut Editor,
1223 cx: &mut ViewContext<Editor>,
1224 ) {
1225 let scroll_position = layout.position_map.snapshot.scroll_position();
1226 let scroll_left = scroll_position.x * layout.position_map.em_width;
1227 let scroll_top = scroll_position.y * layout.position_map.line_height;
1228
1229 for block in layout.blocks.drain(..) {
1230 let mut origin = bounds.origin
1231 + point(
1232 Pixels::ZERO,
1233 block.row as f32 * layout.position_map.line_height - scroll_top,
1234 );
1235 if !matches!(block.style, BlockStyle::Sticky) {
1236 origin += point(-scroll_left, Pixels::ZERO);
1237 }
1238 block
1239 .element
1240 .draw(origin, block.available_space, editor, cx);
1241 }
1242 }
1243
1244 fn column_pixels(&self, column: usize, cx: &ViewContext<Editor>) -> Pixels {
1245 let style = &self.style;
1246 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1247 let layout = cx
1248 .text_system()
1249 .shape_line(
1250 SharedString::from(" ".repeat(column)),
1251 font_size,
1252 &[TextRun {
1253 len: column,
1254 font: style.text.font(),
1255 color: Hsla::default(),
1256 background_color: None,
1257 underline: None,
1258 }],
1259 )
1260 .unwrap();
1261
1262 layout.width
1263 }
1264
1265 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &ViewContext<Editor>) -> Pixels {
1266 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1267 self.column_pixels(digit_count, cx)
1268 }
1269
1270 //Folds contained in a hunk are ignored apart from shrinking visual size
1271 //If a fold contains any hunks then that fold line is marked as modified
1272 fn layout_git_gutters(
1273 &self,
1274 display_rows: Range<u32>,
1275 snapshot: &EditorSnapshot,
1276 ) -> Vec<DisplayDiffHunk> {
1277 let buffer_snapshot = &snapshot.buffer_snapshot;
1278
1279 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1280 .to_point(snapshot)
1281 .row;
1282 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1283 .to_point(snapshot)
1284 .row;
1285
1286 buffer_snapshot
1287 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1288 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1289 .dedup()
1290 .collect()
1291 }
1292
1293 fn calculate_relative_line_numbers(
1294 &self,
1295 snapshot: &EditorSnapshot,
1296 rows: &Range<u32>,
1297 relative_to: Option<u32>,
1298 ) -> HashMap<u32, u32> {
1299 let mut relative_rows: HashMap<u32, u32> = Default::default();
1300 let Some(relative_to) = relative_to else {
1301 return relative_rows;
1302 };
1303
1304 let start = rows.start.min(relative_to);
1305 let end = rows.end.max(relative_to);
1306
1307 let buffer_rows = snapshot
1308 .buffer_rows(start)
1309 .take(1 + (end - start) as usize)
1310 .collect::<Vec<_>>();
1311
1312 let head_idx = relative_to - start;
1313 let mut delta = 1;
1314 let mut i = head_idx + 1;
1315 while i < buffer_rows.len() as u32 {
1316 if buffer_rows[i as usize].is_some() {
1317 if rows.contains(&(i + start)) {
1318 relative_rows.insert(i + start, delta);
1319 }
1320 delta += 1;
1321 }
1322 i += 1;
1323 }
1324 delta = 1;
1325 i = head_idx.min(buffer_rows.len() as u32 - 1);
1326 while i > 0 && buffer_rows[i as usize].is_none() {
1327 i -= 1;
1328 }
1329
1330 while i > 0 {
1331 i -= 1;
1332 if buffer_rows[i as usize].is_some() {
1333 if rows.contains(&(i + start)) {
1334 relative_rows.insert(i + start, delta);
1335 }
1336 delta += 1;
1337 }
1338 }
1339
1340 relative_rows
1341 }
1342
1343 fn shape_line_numbers(
1344 &self,
1345 rows: Range<u32>,
1346 active_rows: &BTreeMap<u32, bool>,
1347 newest_selection_head: DisplayPoint,
1348 is_singleton: bool,
1349 snapshot: &EditorSnapshot,
1350 cx: &ViewContext<Editor>,
1351 ) -> (
1352 Vec<Option<ShapedLine>>,
1353 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1354 ) {
1355 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1356 let include_line_numbers = snapshot.mode == EditorMode::Full;
1357 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1358 let mut fold_statuses = Vec::with_capacity(rows.len());
1359 let mut line_number = String::new();
1360 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1361 let relative_to = if is_relative {
1362 Some(newest_selection_head.row())
1363 } else {
1364 None
1365 };
1366
1367 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1368
1369 for (ix, row) in snapshot
1370 .buffer_rows(rows.start)
1371 .take((rows.end - rows.start) as usize)
1372 .enumerate()
1373 {
1374 let display_row = rows.start + ix as u32;
1375 let (active, color) = if active_rows.contains_key(&display_row) {
1376 (true, cx.theme().colors().editor_active_line_number)
1377 } else {
1378 (false, cx.theme().colors().editor_line_number)
1379 };
1380 if let Some(buffer_row) = row {
1381 if include_line_numbers {
1382 line_number.clear();
1383 let default_number = buffer_row + 1;
1384 let number = relative_rows
1385 .get(&(ix as u32 + rows.start))
1386 .unwrap_or(&default_number);
1387 write!(&mut line_number, "{}", number).unwrap();
1388 let run = TextRun {
1389 len: line_number.len(),
1390 font: self.style.text.font(),
1391 color,
1392 background_color: None,
1393 underline: None,
1394 };
1395 let shaped_line = cx
1396 .text_system()
1397 .shape_line(line_number.clone().into(), font_size, &[run])
1398 .unwrap();
1399 shaped_line_numbers.push(Some(shaped_line));
1400 fold_statuses.push(
1401 is_singleton
1402 .then(|| {
1403 snapshot
1404 .fold_for_line(buffer_row)
1405 .map(|fold_status| (fold_status, buffer_row, active))
1406 })
1407 .flatten(),
1408 )
1409 }
1410 } else {
1411 fold_statuses.push(None);
1412 shaped_line_numbers.push(None);
1413 }
1414 }
1415
1416 (shaped_line_numbers, fold_statuses)
1417 }
1418
1419 fn layout_lines(
1420 &mut self,
1421 rows: Range<u32>,
1422 line_number_layouts: &[Option<ShapedLine>],
1423 snapshot: &EditorSnapshot,
1424 cx: &ViewContext<Editor>,
1425 ) -> Vec<LineWithInvisibles> {
1426 if rows.start >= rows.end {
1427 return Vec::new();
1428 }
1429
1430 // When the editor is empty and unfocused, then show the placeholder.
1431 if snapshot.is_empty() {
1432 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1433 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1434 let placeholder_text = snapshot.placeholder_text();
1435 let placeholder_lines = placeholder_text
1436 .as_ref()
1437 .map_or("", AsRef::as_ref)
1438 .split('\n')
1439 .skip(rows.start as usize)
1440 .chain(iter::repeat(""))
1441 .take(rows.len());
1442 placeholder_lines
1443 .filter_map(move |line| {
1444 let run = TextRun {
1445 len: line.len(),
1446 font: self.style.text.font(),
1447 color: placeholder_color,
1448 background_color: None,
1449 underline: Default::default(),
1450 };
1451 cx.text_system()
1452 .shape_line(line.to_string().into(), font_size, &[run])
1453 .log_err()
1454 })
1455 .map(|line| LineWithInvisibles {
1456 line,
1457 invisibles: Vec::new(),
1458 })
1459 .collect()
1460 } else {
1461 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1462 LineWithInvisibles::from_chunks(
1463 chunks,
1464 &self.style.text,
1465 MAX_LINE_LEN,
1466 rows.len() as usize,
1467 line_number_layouts,
1468 snapshot.mode,
1469 cx,
1470 )
1471 }
1472 }
1473
1474 fn compute_layout(
1475 &mut self,
1476 editor: &mut Editor,
1477 cx: &mut ViewContext<'_, Editor>,
1478 mut bounds: Bounds<Pixels>,
1479 ) -> LayoutState {
1480 // let mut size = constraint.max;
1481 // if size.x.is_infinite() {
1482 // unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
1483 // }
1484
1485 let snapshot = editor.snapshot(cx);
1486 let style = self.style.clone();
1487
1488 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1489 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1490 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1491 let em_width = cx
1492 .text_system()
1493 .typographic_bounds(font_id, font_size, 'm')
1494 .unwrap()
1495 .size
1496 .width;
1497 let em_advance = cx
1498 .text_system()
1499 .advance(font_id, font_size, 'm')
1500 .unwrap()
1501 .width;
1502
1503 let gutter_padding;
1504 let gutter_width;
1505 let gutter_margin;
1506 if snapshot.show_gutter {
1507 let descent = cx.text_system().descent(font_id, font_size).unwrap();
1508
1509 let gutter_padding_factor = 3.5;
1510 gutter_padding = (em_width * gutter_padding_factor).round();
1511 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1512 gutter_margin = -descent;
1513 } else {
1514 gutter_padding = Pixels::ZERO;
1515 gutter_width = Pixels::ZERO;
1516 gutter_margin = Pixels::ZERO;
1517 };
1518
1519 editor.gutter_width = gutter_width;
1520 let text_width = bounds.size.width - gutter_width;
1521 let overscroll = size(em_width, px(0.));
1522 let snapshot = {
1523 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1524
1525 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1526 let wrap_width = match editor.soft_wrap_mode(cx) {
1527 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1528 SoftWrap::EditorWidth => editor_width,
1529 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1530 };
1531
1532 if editor.set_wrap_width(Some(wrap_width), cx) {
1533 editor.snapshot(cx)
1534 } else {
1535 snapshot
1536 }
1537 };
1538
1539 let wrap_guides = editor
1540 .wrap_guides(cx)
1541 .iter()
1542 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1543 .collect::<SmallVec<[_; 2]>>();
1544
1545 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1546 // todo!("this should happen during layout")
1547 let editor_mode = snapshot.mode;
1548 if let EditorMode::AutoHeight { max_lines } = editor_mode {
1549 todo!()
1550 // size.set_y(
1551 // scroll_height
1552 // .min(constraint.max_along(Axis::Vertical))
1553 // .max(constraint.min_along(Axis::Vertical))
1554 // .max(line_height)
1555 // .min(line_height * max_lines as f32),
1556 // )
1557 } else if let EditorMode::SingleLine = editor_mode {
1558 bounds.size.height = line_height.min(bounds.size.height);
1559 }
1560 // todo!()
1561 // else if size.y.is_infinite() {
1562 // // size.set_y(scroll_height);
1563 // }
1564 //
1565 let gutter_size = size(gutter_width, bounds.size.height);
1566 let text_size = size(text_width, bounds.size.height);
1567
1568 let autoscroll_horizontally =
1569 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1570 let mut snapshot = editor.snapshot(cx);
1571
1572 let scroll_position = snapshot.scroll_position();
1573 // The scroll position is a fractional point, the whole number of which represents
1574 // the top of the window in terms of display rows.
1575 let start_row = scroll_position.y as u32;
1576 let height_in_lines = f32::from(bounds.size.height / line_height);
1577 let max_row = snapshot.max_point().row();
1578
1579 // Add 1 to ensure selections bleed off screen
1580 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1581
1582 let start_anchor = if start_row == 0 {
1583 Anchor::min()
1584 } else {
1585 snapshot
1586 .buffer_snapshot
1587 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1588 };
1589 let end_anchor = if end_row > max_row {
1590 Anchor::max()
1591 } else {
1592 snapshot
1593 .buffer_snapshot
1594 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1595 };
1596
1597 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1598 let mut active_rows = BTreeMap::new();
1599 let is_singleton = editor.is_singleton(cx);
1600
1601 let highlighted_rows = editor.highlighted_rows();
1602 let highlighted_ranges = editor.background_highlights_in_range(
1603 start_anchor..end_anchor,
1604 &snapshot.display_snapshot,
1605 cx.theme().colors(),
1606 );
1607
1608 let mut newest_selection_head = None;
1609
1610 if editor.show_local_selections {
1611 let mut local_selections: Vec<Selection<Point>> = editor
1612 .selections
1613 .disjoint_in_range(start_anchor..end_anchor, cx);
1614 local_selections.extend(editor.selections.pending(cx));
1615 let mut layouts = Vec::new();
1616 let newest = editor.selections.newest(cx);
1617 for selection in local_selections.drain(..) {
1618 let is_empty = selection.start == selection.end;
1619 let is_newest = selection == newest;
1620
1621 let layout = SelectionLayout::new(
1622 selection,
1623 editor.selections.line_mode,
1624 editor.cursor_shape,
1625 &snapshot.display_snapshot,
1626 is_newest,
1627 true,
1628 );
1629 if is_newest {
1630 newest_selection_head = Some(layout.head);
1631 }
1632
1633 for row in cmp::max(layout.active_rows.start, start_row)
1634 ..=cmp::min(layout.active_rows.end, end_row)
1635 {
1636 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1637 *contains_non_empty_selection |= !is_empty;
1638 }
1639 layouts.push(layout);
1640 }
1641
1642 selections.push((style.local_player, layouts));
1643 }
1644
1645 if let Some(collaboration_hub) = &editor.collaboration_hub {
1646 // When following someone, render the local selections in their color.
1647 if let Some(leader_id) = editor.leader_peer_id {
1648 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1649 if let Some(participant_index) = collaboration_hub
1650 .user_participant_indices(cx)
1651 .get(&collaborator.user_id)
1652 {
1653 if let Some((local_selection_style, _)) = selections.first_mut() {
1654 *local_selection_style = cx
1655 .theme()
1656 .players()
1657 .color_for_participant(participant_index.0);
1658 }
1659 }
1660 }
1661 }
1662
1663 let mut remote_selections = HashMap::default();
1664 for selection in snapshot.remote_selections_in_range(
1665 &(start_anchor..end_anchor),
1666 collaboration_hub.as_ref(),
1667 cx,
1668 ) {
1669 let selection_style = if let Some(participant_index) = selection.participant_index {
1670 cx.theme()
1671 .players()
1672 .color_for_participant(participant_index.0)
1673 } else {
1674 cx.theme().players().absent()
1675 };
1676
1677 // Don't re-render the leader's selections, since the local selections
1678 // match theirs.
1679 if Some(selection.peer_id) == editor.leader_peer_id {
1680 continue;
1681 }
1682
1683 remote_selections
1684 .entry(selection.replica_id)
1685 .or_insert((selection_style, Vec::new()))
1686 .1
1687 .push(SelectionLayout::new(
1688 selection.selection,
1689 selection.line_mode,
1690 selection.cursor_shape,
1691 &snapshot.display_snapshot,
1692 false,
1693 false,
1694 ));
1695 }
1696
1697 selections.extend(remote_selections.into_values());
1698 }
1699
1700 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1701 let show_scrollbars = match scrollbar_settings.show {
1702 ShowScrollbar::Auto => {
1703 // Git
1704 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1705 ||
1706 // Selections
1707 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1708 // Scrollmanager
1709 || editor.scroll_manager.scrollbars_visible()
1710 }
1711 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1712 ShowScrollbar::Always => true,
1713 ShowScrollbar::Never => false,
1714 };
1715
1716 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1717 let newest = editor.selections.newest::<Point>(cx);
1718 SelectionLayout::new(
1719 newest,
1720 editor.selections.line_mode,
1721 editor.cursor_shape,
1722 &snapshot.display_snapshot,
1723 true,
1724 true,
1725 )
1726 .head
1727 });
1728
1729 let (line_numbers, fold_statuses) = self.shape_line_numbers(
1730 start_row..end_row,
1731 &active_rows,
1732 head_for_relative,
1733 is_singleton,
1734 &snapshot,
1735 cx,
1736 );
1737
1738 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1739
1740 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1741
1742 let mut max_visible_line_width = Pixels::ZERO;
1743 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
1744 for line_with_invisibles in &line_layouts {
1745 if line_with_invisibles.line.width > max_visible_line_width {
1746 max_visible_line_width = line_with_invisibles.line.width;
1747 }
1748 }
1749
1750 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1751 .unwrap()
1752 .width;
1753 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1754
1755 let (scroll_width, blocks) = cx.with_element_id(Some("editor_blocks"), |cx| {
1756 self.layout_blocks(
1757 start_row..end_row,
1758 &snapshot,
1759 bounds.size.width,
1760 scroll_width,
1761 gutter_padding,
1762 gutter_width,
1763 em_width,
1764 gutter_width + gutter_margin,
1765 line_height,
1766 &style,
1767 &line_layouts,
1768 editor,
1769 cx,
1770 )
1771 });
1772
1773 let scroll_max = point(
1774 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1775 max_row as f32,
1776 );
1777
1778 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1779
1780 let autoscrolled = if autoscroll_horizontally {
1781 editor.autoscroll_horizontally(
1782 start_row,
1783 text_size.width,
1784 scroll_width,
1785 em_width,
1786 &line_layouts,
1787 cx,
1788 )
1789 } else {
1790 false
1791 };
1792
1793 if clamped || autoscrolled {
1794 snapshot = editor.snapshot(cx);
1795 }
1796
1797 let mut context_menu = None;
1798 let mut code_actions_indicator = None;
1799 if let Some(newest_selection_head) = newest_selection_head {
1800 if (start_row..end_row).contains(&newest_selection_head.row()) {
1801 if editor.context_menu_visible() {
1802 context_menu =
1803 editor.render_context_menu(newest_selection_head, &self.style, cx);
1804 }
1805
1806 let active = matches!(
1807 editor.context_menu.read().as_ref(),
1808 Some(crate::ContextMenu::CodeActions(_))
1809 );
1810
1811 code_actions_indicator = editor
1812 .render_code_actions_indicator(&style, active, cx)
1813 .map(|element| CodeActionsIndicator {
1814 row: newest_selection_head.row(),
1815 button: element,
1816 });
1817 }
1818 }
1819
1820 let visible_rows = start_row..start_row + line_layouts.len() as u32;
1821 // todo!("hover")
1822 // let mut hover = editor.hover_state.render(
1823 // &snapshot,
1824 // &style,
1825 // visible_rows,
1826 // editor.workspace.as_ref().map(|(w, _)| w.clone()),
1827 // cx,
1828 // );
1829 // let mode = editor.mode;
1830
1831 let mut fold_indicators = cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
1832 editor.render_fold_indicators(
1833 fold_statuses,
1834 &style,
1835 editor.gutter_hovered,
1836 line_height,
1837 gutter_margin,
1838 cx,
1839 )
1840 });
1841
1842 // todo!("context_menu")
1843 // if let Some((_, context_menu)) = context_menu.as_mut() {
1844 // context_menu.layout(
1845 // SizeConstraint {
1846 // min: gpui::Point::<Pixels>::zero(),
1847 // max: point(
1848 // cx.window_size().x * 0.7,
1849 // (12. * line_height).min((size.y - line_height) / 2.),
1850 // ),
1851 // },
1852 // editor,
1853 // cx,
1854 // );
1855 // }
1856
1857 // todo!("hover popovers")
1858 // if let Some((_, hover_popovers)) = hover.as_mut() {
1859 // for hover_popover in hover_popovers.iter_mut() {
1860 // hover_popover.layout(
1861 // SizeConstraint {
1862 // min: gpui::Point::<Pixels>::zero(),
1863 // max: point(
1864 // (120. * em_width) // Default size
1865 // .min(size.x / 2.) // Shrink to half of the editor width
1866 // .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1867 // (16. * line_height) // Default size
1868 // .min(size.y / 2.) // Shrink to half of the editor height
1869 // .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1870 // ),
1871 // },
1872 // editor,
1873 // cx,
1874 // );
1875 // }
1876 // }
1877
1878 let invisible_symbol_font_size = font_size / 2.;
1879 let tab_invisible = cx
1880 .text_system()
1881 .shape_line(
1882 "→".into(),
1883 invisible_symbol_font_size,
1884 &[TextRun {
1885 len: "→".len(),
1886 font: self.style.text.font(),
1887 color: cx.theme().colors().editor_invisible,
1888 background_color: None,
1889 underline: None,
1890 }],
1891 )
1892 .unwrap();
1893 let space_invisible = cx
1894 .text_system()
1895 .shape_line(
1896 "•".into(),
1897 invisible_symbol_font_size,
1898 &[TextRun {
1899 len: "•".len(),
1900 font: self.style.text.font(),
1901 color: cx.theme().colors().editor_invisible,
1902 background_color: None,
1903 underline: None,
1904 }],
1905 )
1906 .unwrap();
1907
1908 LayoutState {
1909 mode: editor_mode,
1910 position_map: Arc::new(PositionMap {
1911 size: bounds.size,
1912 scroll_position: point(
1913 scroll_position.x * em_width,
1914 scroll_position.y * line_height,
1915 ),
1916 scroll_max,
1917 line_layouts,
1918 line_height,
1919 em_width,
1920 em_advance,
1921 snapshot,
1922 }),
1923 visible_anchor_range: start_anchor..end_anchor,
1924 visible_display_row_range: start_row..end_row,
1925 wrap_guides,
1926 gutter_size,
1927 gutter_padding,
1928 text_size,
1929 scrollbar_row_range,
1930 show_scrollbars,
1931 is_singleton,
1932 max_row,
1933 gutter_margin,
1934 active_rows,
1935 highlighted_rows,
1936 highlighted_ranges,
1937 line_numbers,
1938 display_hunks,
1939 blocks,
1940 selections,
1941 context_menu,
1942 code_actions_indicator,
1943 fold_indicators,
1944 tab_invisible,
1945 space_invisible,
1946 // hover_popovers: hover,
1947 }
1948 }
1949
1950 #[allow(clippy::too_many_arguments)]
1951 fn layout_blocks(
1952 &mut self,
1953 rows: Range<u32>,
1954 snapshot: &EditorSnapshot,
1955 editor_width: Pixels,
1956 scroll_width: Pixels,
1957 gutter_padding: Pixels,
1958 gutter_width: Pixels,
1959 em_width: Pixels,
1960 text_x: Pixels,
1961 line_height: Pixels,
1962 style: &EditorStyle,
1963 line_layouts: &[LineWithInvisibles],
1964 editor: &mut Editor,
1965 cx: &mut ViewContext<Editor>,
1966 ) -> (Pixels, Vec<BlockLayout>) {
1967 let mut block_id = 0;
1968 let scroll_x = snapshot.scroll_anchor.offset.x;
1969 let (fixed_blocks, non_fixed_blocks) = snapshot
1970 .blocks_in_range(rows.clone())
1971 .partition::<Vec<_>, _>(|(_, block)| match block {
1972 TransformBlock::ExcerptHeader { .. } => false,
1973 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1974 });
1975 let mut render_block = |block: &TransformBlock,
1976 available_space: Size<AvailableSpace>,
1977 block_id: usize,
1978 editor: &mut Editor,
1979 cx: &mut ViewContext<Editor>| {
1980 let mut element = match block {
1981 TransformBlock::Custom(block) => {
1982 let align_to = block
1983 .position()
1984 .to_point(&snapshot.buffer_snapshot)
1985 .to_display_point(snapshot);
1986 let anchor_x = text_x
1987 + if rows.contains(&align_to.row()) {
1988 line_layouts[(align_to.row() - rows.start) as usize]
1989 .line
1990 .x_for_index(align_to.column() as usize)
1991 } else {
1992 layout_line(align_to.row(), snapshot, style, cx)
1993 .unwrap()
1994 .x_for_index(align_to.column() as usize)
1995 };
1996
1997 block.render(&mut BlockContext {
1998 view_context: cx,
1999 anchor_x,
2000 gutter_padding,
2001 line_height,
2002 gutter_width,
2003 em_width,
2004 block_id,
2005 editor_style: &self.style,
2006 })
2007 }
2008 TransformBlock::ExcerptHeader {
2009 buffer,
2010 range,
2011 starts_new_buffer,
2012 ..
2013 } => {
2014 let include_root = editor
2015 .project
2016 .as_ref()
2017 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2018 .unwrap_or_default();
2019 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2020 let jump_path = ProjectPath {
2021 worktree_id: file.worktree_id(cx),
2022 path: file.path.clone(),
2023 };
2024 let jump_anchor = range
2025 .primary
2026 .as_ref()
2027 .map_or(range.context.start, |primary| primary.start);
2028 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2029
2030 IconButton::new(block_id, ui::Icon::ArrowUpRight)
2031 .on_click(move |editor: &mut Editor, cx| {
2032 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2033 })
2034 .tooltip(move |_, cx| {
2035 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2036 })
2037 });
2038
2039 let element = if *starts_new_buffer {
2040 let path = buffer.resolve_file_path(cx, include_root);
2041 let mut filename = None;
2042 let mut parent_path = None;
2043 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2044 if let Some(path) = path {
2045 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2046 parent_path = path
2047 .parent()
2048 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2049 }
2050
2051 h_stack()
2052 .size_full()
2053 .bg(gpui::red())
2054 .child(
2055 filename
2056 .map(SharedString::from)
2057 .unwrap_or_else(|| "untitled".into()),
2058 )
2059 .children(parent_path)
2060 .children(jump_icon) // .p_x(gutter_padding)
2061 } else {
2062 let text_style = style.text.clone();
2063 h_stack()
2064 .size_full()
2065 .bg(gpui::red())
2066 .child("⋯")
2067 .children(jump_icon) // .p_x(gutter_padding)
2068 };
2069 element.into_any()
2070 }
2071 };
2072
2073 let size = element.measure(available_space, editor, cx);
2074 (element, size)
2075 };
2076
2077 let mut fixed_block_max_width = Pixels::ZERO;
2078 let mut blocks = Vec::new();
2079 for (row, block) in fixed_blocks {
2080 let available_space = size(
2081 AvailableSpace::MinContent,
2082 AvailableSpace::Definite(block.height() as f32 * line_height),
2083 );
2084 let (element, element_size) =
2085 render_block(block, available_space, block_id, editor, cx);
2086 block_id += 1;
2087 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2088 blocks.push(BlockLayout {
2089 row,
2090 element,
2091 available_space,
2092 style: BlockStyle::Fixed,
2093 });
2094 }
2095 for (row, block) in non_fixed_blocks {
2096 let style = match block {
2097 TransformBlock::Custom(block) => block.style(),
2098 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2099 };
2100 let width = match style {
2101 BlockStyle::Sticky => editor_width,
2102 BlockStyle::Flex => editor_width
2103 .max(fixed_block_max_width)
2104 .max(gutter_width + scroll_width),
2105 BlockStyle::Fixed => unreachable!(),
2106 };
2107 let available_space = size(
2108 AvailableSpace::Definite(width),
2109 AvailableSpace::Definite(block.height() as f32 * line_height),
2110 );
2111 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2112 block_id += 1;
2113 blocks.push(BlockLayout {
2114 row,
2115 element,
2116 available_space,
2117 style,
2118 });
2119 }
2120 (
2121 scroll_width.max(fixed_block_max_width - gutter_width),
2122 blocks,
2123 )
2124 }
2125
2126 fn paint_mouse_listeners(
2127 &mut self,
2128 bounds: Bounds<Pixels>,
2129 gutter_bounds: Bounds<Pixels>,
2130 text_bounds: Bounds<Pixels>,
2131 layout: &LayoutState,
2132 cx: &mut ViewContext<Editor>,
2133 ) {
2134 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
2135
2136 cx.on_mouse_event({
2137 let position_map = layout.position_map.clone();
2138 move |editor, event: &ScrollWheelEvent, phase, cx| {
2139 if phase != DispatchPhase::Bubble {
2140 return;
2141 }
2142
2143 if Self::scroll(editor, event, &position_map, bounds, cx) {
2144 cx.stop_propagation();
2145 }
2146 }
2147 });
2148 cx.on_mouse_event({
2149 let position_map = layout.position_map.clone();
2150 move |editor, event: &MouseDownEvent, phase, cx| {
2151 if phase != DispatchPhase::Bubble {
2152 return;
2153 }
2154
2155 if Self::mouse_down(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2156 cx.stop_propagation()
2157 }
2158 }
2159 });
2160 cx.on_mouse_event({
2161 let position_map = layout.position_map.clone();
2162 move |editor, event: &MouseUpEvent, phase, cx| {
2163 if phase != DispatchPhase::Bubble {
2164 return;
2165 }
2166
2167 if Self::mouse_up(editor, event, &position_map, text_bounds, cx) {
2168 cx.stop_propagation()
2169 }
2170 }
2171 });
2172 // todo!()
2173 // on_down(MouseButton::Right, {
2174 // let position_map = layout.position_map.clone();
2175 // move |event, editor, cx| {
2176 // if !Self::mouse_right_down(
2177 // editor,
2178 // event.position,
2179 // position_map.as_ref(),
2180 // text_bounds,
2181 // cx,
2182 // ) {
2183 // cx.propagate_event();
2184 // }
2185 // }
2186 // });
2187 cx.on_mouse_event({
2188 let position_map = layout.position_map.clone();
2189 move |editor, event: &MouseMoveEvent, phase, cx| {
2190 if phase != DispatchPhase::Bubble {
2191 return;
2192 }
2193
2194 if Self::mouse_moved(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2195 cx.stop_propagation()
2196 }
2197 }
2198 });
2199 }
2200}
2201
2202#[derive(Debug)]
2203pub struct LineWithInvisibles {
2204 pub line: ShapedLine,
2205 invisibles: Vec<Invisible>,
2206}
2207
2208impl LineWithInvisibles {
2209 fn from_chunks<'a>(
2210 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2211 text_style: &TextStyle,
2212 max_line_len: usize,
2213 max_line_count: usize,
2214 line_number_layouts: &[Option<ShapedLine>],
2215 editor_mode: EditorMode,
2216 cx: &WindowContext,
2217 ) -> Vec<Self> {
2218 let mut layouts = Vec::with_capacity(max_line_count);
2219 let mut line = String::new();
2220 let mut invisibles = Vec::new();
2221 let mut styles = Vec::new();
2222 let mut non_whitespace_added = false;
2223 let mut row = 0;
2224 let mut line_exceeded_max_len = false;
2225 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2226
2227 for highlighted_chunk in chunks.chain([HighlightedChunk {
2228 chunk: "\n",
2229 style: None,
2230 is_tab: false,
2231 }]) {
2232 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2233 if ix > 0 {
2234 let shaped_line = cx
2235 .text_system()
2236 .shape_line(line.clone().into(), font_size, &styles)
2237 .unwrap();
2238 layouts.push(Self {
2239 line: shaped_line,
2240 invisibles: invisibles.drain(..).collect(),
2241 });
2242
2243 line.clear();
2244 styles.clear();
2245 row += 1;
2246 line_exceeded_max_len = false;
2247 non_whitespace_added = false;
2248 if row == max_line_count {
2249 return layouts;
2250 }
2251 }
2252
2253 if !line_chunk.is_empty() && !line_exceeded_max_len {
2254 let text_style = if let Some(style) = highlighted_chunk.style {
2255 Cow::Owned(text_style.clone().highlight(style))
2256 } else {
2257 Cow::Borrowed(text_style)
2258 };
2259
2260 if line.len() + line_chunk.len() > max_line_len {
2261 let mut chunk_len = max_line_len - line.len();
2262 while !line_chunk.is_char_boundary(chunk_len) {
2263 chunk_len -= 1;
2264 }
2265 line_chunk = &line_chunk[..chunk_len];
2266 line_exceeded_max_len = true;
2267 }
2268
2269 styles.push(TextRun {
2270 len: line_chunk.len(),
2271 font: text_style.font(),
2272 color: text_style.color,
2273 background_color: None,
2274 underline: text_style.underline,
2275 });
2276
2277 if editor_mode == EditorMode::Full {
2278 // Line wrap pads its contents with fake whitespaces,
2279 // avoid printing them
2280 let inside_wrapped_string = line_number_layouts
2281 .get(row)
2282 .and_then(|layout| layout.as_ref())
2283 .is_none();
2284 if highlighted_chunk.is_tab {
2285 if non_whitespace_added || !inside_wrapped_string {
2286 invisibles.push(Invisible::Tab {
2287 line_start_offset: line.len(),
2288 });
2289 }
2290 } else {
2291 invisibles.extend(
2292 line_chunk
2293 .chars()
2294 .enumerate()
2295 .filter(|(_, line_char)| {
2296 let is_whitespace = line_char.is_whitespace();
2297 non_whitespace_added |= !is_whitespace;
2298 is_whitespace
2299 && (non_whitespace_added || !inside_wrapped_string)
2300 })
2301 .map(|(whitespace_index, _)| Invisible::Whitespace {
2302 line_offset: line.len() + whitespace_index,
2303 }),
2304 )
2305 }
2306 }
2307
2308 line.push_str(line_chunk);
2309 }
2310 }
2311 }
2312
2313 layouts
2314 }
2315
2316 fn draw(
2317 &self,
2318 layout: &LayoutState,
2319 row: u32,
2320 content_origin: gpui::Point<Pixels>,
2321 whitespace_setting: ShowWhitespaceSetting,
2322 selection_ranges: &[Range<DisplayPoint>],
2323 cx: &mut ViewContext<Editor>,
2324 ) {
2325 let line_height = layout.position_map.line_height;
2326 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2327
2328 self.line.paint(
2329 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2330 line_height,
2331 cx,
2332 );
2333
2334 self.draw_invisibles(
2335 &selection_ranges,
2336 layout,
2337 content_origin,
2338 line_y,
2339 row,
2340 line_height,
2341 whitespace_setting,
2342 cx,
2343 );
2344 }
2345
2346 fn draw_invisibles(
2347 &self,
2348 selection_ranges: &[Range<DisplayPoint>],
2349 layout: &LayoutState,
2350 content_origin: gpui::Point<Pixels>,
2351 line_y: Pixels,
2352 row: u32,
2353 line_height: Pixels,
2354 whitespace_setting: ShowWhitespaceSetting,
2355 cx: &mut ViewContext<Editor>,
2356 ) {
2357 let allowed_invisibles_regions = match whitespace_setting {
2358 ShowWhitespaceSetting::None => return,
2359 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2360 ShowWhitespaceSetting::All => None,
2361 };
2362
2363 for invisible in &self.invisibles {
2364 let (&token_offset, invisible_symbol) = match invisible {
2365 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2366 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2367 };
2368
2369 let x_offset = self.line.x_for_index(token_offset);
2370 let invisible_offset =
2371 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2372 let origin = content_origin
2373 + gpui::point(
2374 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2375 line_y,
2376 );
2377
2378 if let Some(allowed_regions) = allowed_invisibles_regions {
2379 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2380 if !allowed_regions
2381 .iter()
2382 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2383 {
2384 continue;
2385 }
2386 }
2387 invisible_symbol.paint(origin, line_height, cx);
2388 }
2389 }
2390}
2391
2392#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2393enum Invisible {
2394 Tab { line_start_offset: usize },
2395 Whitespace { line_offset: usize },
2396}
2397
2398impl Element<Editor> for EditorElement {
2399 type State = ();
2400
2401 fn layout(
2402 &mut self,
2403 editor: &mut Editor,
2404 element_state: Option<Self::State>,
2405 cx: &mut gpui::ViewContext<Editor>,
2406 ) -> (gpui::LayoutId, Self::State) {
2407 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2408
2409 let rem_size = cx.rem_size();
2410 let mut style = Style::default();
2411 style.size.width = relative(1.).into();
2412 style.size.height = match editor.mode {
2413 EditorMode::SingleLine => self.style.text.line_height_in_pixels(cx.rem_size()).into(),
2414 EditorMode::AutoHeight { .. } => todo!(),
2415 EditorMode::Full => relative(1.).into(),
2416 };
2417 let layout_id = cx.request_layout(&style, None);
2418 (layout_id, ())
2419 }
2420
2421 fn paint(
2422 mut self,
2423 bounds: Bounds<gpui::Pixels>,
2424 editor: &mut Editor,
2425 element_state: &mut Self::State,
2426 cx: &mut gpui::ViewContext<Editor>,
2427 ) {
2428 let mut layout = self.compute_layout(editor, cx, bounds);
2429 let gutter_bounds = Bounds {
2430 origin: bounds.origin,
2431 size: layout.gutter_size,
2432 };
2433 let text_bounds = Bounds {
2434 origin: gutter_bounds.upper_right(),
2435 size: layout.text_size,
2436 };
2437
2438 let dispatch_context = editor.dispatch_context(cx);
2439 cx.with_key_dispatch(
2440 dispatch_context,
2441 Some(editor.focus_handle.clone()),
2442 |_, cx| {
2443 register_actions(cx);
2444
2445 // We call with_z_index to establish a new stacking context.
2446 cx.with_z_index(0, |cx| {
2447 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2448 // Paint mouse listeners first, so any elements we paint on top of the editor
2449 // take precedence.
2450 self.paint_mouse_listeners(bounds, gutter_bounds, text_bounds, &layout, cx);
2451 let input_handler = ElementInputHandler::new(bounds, cx);
2452 cx.handle_input(&editor.focus_handle, input_handler);
2453
2454 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2455 if layout.gutter_size.width > Pixels::ZERO {
2456 self.paint_gutter(gutter_bounds, &mut layout, editor, cx);
2457 }
2458 self.paint_text(text_bounds, &mut layout, editor, cx);
2459
2460 if !layout.blocks.is_empty() {
2461 cx.with_element_id(Some("editor_blocks"), |cx| {
2462 self.paint_blocks(bounds, &mut layout, editor, cx);
2463 })
2464 }
2465 });
2466 });
2467 },
2468 )
2469 }
2470}
2471
2472impl RenderOnce<Editor> for EditorElement {
2473 type Element = Self;
2474
2475 fn element_id(&self) -> Option<gpui::ElementId> {
2476 Some(self.editor_id.into())
2477 }
2478
2479 fn render_once(self) -> Self::Element {
2480 self
2481 }
2482}
2483
2484// impl EditorElement {
2485// type LayoutState = LayoutState;
2486// type PaintState = ();
2487
2488// fn layout(
2489// &mut self,
2490// constraint: SizeConstraint,
2491// editor: &mut Editor,
2492// cx: &mut ViewContext<Editor>,
2493// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2494// let mut size = constraint.max;
2495// if size.x.is_infinite() {
2496// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2497// }
2498
2499// let snapshot = editor.snapshot(cx);
2500// let style = self.style.clone();
2501
2502// let line_height = (style.text.font_size * style.line_height_scalar).round();
2503
2504// let gutter_padding;
2505// let gutter_width;
2506// let gutter_margin;
2507// if snapshot.show_gutter {
2508// let em_width = style.text.em_width(cx.font_cache());
2509// gutter_padding = (em_width * style.gutter_padding_factor).round();
2510// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2511// gutter_margin = -style.text.descent(cx.font_cache());
2512// } else {
2513// gutter_padding = 0.0;
2514// gutter_width = 0.0;
2515// gutter_margin = 0.0;
2516// };
2517
2518// let text_width = size.x - gutter_width;
2519// let em_width = style.text.em_width(cx.font_cache());
2520// let em_advance = style.text.em_advance(cx.font_cache());
2521// let overscroll = point(em_width, 0.);
2522// let snapshot = {
2523// editor.set_visible_line_count(size.y / line_height, cx);
2524
2525// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2526// let wrap_width = match editor.soft_wrap_mode(cx) {
2527// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2528// SoftWrap::EditorWidth => editor_width,
2529// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2530// };
2531
2532// if editor.set_wrap_width(Some(wrap_width), cx) {
2533// editor.snapshot(cx)
2534// } else {
2535// snapshot
2536// }
2537// };
2538
2539// let wrap_guides = editor
2540// .wrap_guides(cx)
2541// .iter()
2542// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2543// .collect();
2544
2545// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2546// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2547// size.set_y(
2548// scroll_height
2549// .min(constraint.max_along(Axis::Vertical))
2550// .max(constraint.min_along(Axis::Vertical))
2551// .max(line_height)
2552// .min(line_height * max_lines as f32),
2553// )
2554// } else if let EditorMode::SingleLine = snapshot.mode {
2555// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2556// } else if size.y.is_infinite() {
2557// size.set_y(scroll_height);
2558// }
2559// let gutter_size = point(gutter_width, size.y);
2560// let text_size = point(text_width, size.y);
2561
2562// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2563// let mut snapshot = editor.snapshot(cx);
2564
2565// let scroll_position = snapshot.scroll_position();
2566// // The scroll position is a fractional point, the whole number of which represents
2567// // the top of the window in terms of display rows.
2568// let start_row = scroll_position.y as u32;
2569// let height_in_lines = size.y / line_height;
2570// let max_row = snapshot.max_point().row();
2571
2572// // Add 1 to ensure selections bleed off screen
2573// let end_row = 1 + cmp::min(
2574// (scroll_position.y + height_in_lines).ceil() as u32,
2575// max_row,
2576// );
2577
2578// let start_anchor = if start_row == 0 {
2579// Anchor::min()
2580// } else {
2581// snapshot
2582// .buffer_snapshot
2583// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2584// };
2585// let end_anchor = if end_row > max_row {
2586// Anchor::max
2587// } else {
2588// snapshot
2589// .buffer_snapshot
2590// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2591// };
2592
2593// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2594// let mut active_rows = BTreeMap::new();
2595// let mut fold_ranges = Vec::new();
2596// let is_singleton = editor.is_singleton(cx);
2597
2598// let highlighted_rows = editor.highlighted_rows();
2599// let theme = theme::current(cx);
2600// let highlighted_ranges = editor.background_highlights_in_range(
2601// start_anchor..end_anchor,
2602// &snapshot.display_snapshot,
2603// theme.as_ref(),
2604// );
2605
2606// fold_ranges.extend(
2607// snapshot
2608// .folds_in_range(start_anchor..end_anchor)
2609// .map(|anchor| {
2610// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2611// (
2612// start.row,
2613// start.to_display_point(&snapshot.display_snapshot)
2614// ..anchor.end.to_display_point(&snapshot),
2615// )
2616// }),
2617// );
2618
2619// let mut newest_selection_head = None;
2620
2621// if editor.show_local_selections {
2622// let mut local_selections: Vec<Selection<Point>> = editor
2623// .selections
2624// .disjoint_in_range(start_anchor..end_anchor, cx);
2625// local_selections.extend(editor.selections.pending(cx));
2626// let mut layouts = Vec::new();
2627// let newest = editor.selections.newest(cx);
2628// for selection in local_selections.drain(..) {
2629// let is_empty = selection.start == selection.end;
2630// let is_newest = selection == newest;
2631
2632// let layout = SelectionLayout::new(
2633// selection,
2634// editor.selections.line_mode,
2635// editor.cursor_shape,
2636// &snapshot.display_snapshot,
2637// is_newest,
2638// true,
2639// );
2640// if is_newest {
2641// newest_selection_head = Some(layout.head);
2642// }
2643
2644// for row in cmp::max(layout.active_rows.start, start_row)
2645// ..=cmp::min(layout.active_rows.end, end_row)
2646// {
2647// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2648// *contains_non_empty_selection |= !is_empty;
2649// }
2650// layouts.push(layout);
2651// }
2652
2653// selections.push((style.selection, layouts));
2654// }
2655
2656// if let Some(collaboration_hub) = &editor.collaboration_hub {
2657// // When following someone, render the local selections in their color.
2658// if let Some(leader_id) = editor.leader_peer_id {
2659// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2660// if let Some(participant_index) = collaboration_hub
2661// .user_participant_indices(cx)
2662// .get(&collaborator.user_id)
2663// {
2664// if let Some((local_selection_style, _)) = selections.first_mut() {
2665// *local_selection_style =
2666// style.selection_style_for_room_participant(participant_index.0);
2667// }
2668// }
2669// }
2670// }
2671
2672// let mut remote_selections = HashMap::default();
2673// for selection in snapshot.remote_selections_in_range(
2674// &(start_anchor..end_anchor),
2675// collaboration_hub.as_ref(),
2676// cx,
2677// ) {
2678// let selection_style = if let Some(participant_index) = selection.participant_index {
2679// style.selection_style_for_room_participant(participant_index.0)
2680// } else {
2681// style.absent_selection
2682// };
2683
2684// // Don't re-render the leader's selections, since the local selections
2685// // match theirs.
2686// if Some(selection.peer_id) == editor.leader_peer_id {
2687// continue;
2688// }
2689
2690// remote_selections
2691// .entry(selection.replica_id)
2692// .or_insert((selection_style, Vec::new()))
2693// .1
2694// .push(SelectionLayout::new(
2695// selection.selection,
2696// selection.line_mode,
2697// selection.cursor_shape,
2698// &snapshot.display_snapshot,
2699// false,
2700// false,
2701// ));
2702// }
2703
2704// selections.extend(remote_selections.into_values());
2705// }
2706
2707// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2708// let show_scrollbars = match scrollbar_settings.show {
2709// ShowScrollbar::Auto => {
2710// // Git
2711// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2712// ||
2713// // Selections
2714// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2715// // Scrollmanager
2716// || editor.scroll_manager.scrollbars_visible()
2717// }
2718// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2719// ShowScrollbar::Always => true,
2720// ShowScrollbar::Never => false,
2721// };
2722
2723// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2724// .into_iter()
2725// .map(|(id, fold)| {
2726// let color = self
2727// .style
2728// .folds
2729// .ellipses
2730// .background
2731// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2732// .color;
2733
2734// (id, fold, color)
2735// })
2736// .collect();
2737
2738// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2739// let newest = editor.selections.newest::<Point>(cx);
2740// SelectionLayout::new(
2741// newest,
2742// editor.selections.line_mode,
2743// editor.cursor_shape,
2744// &snapshot.display_snapshot,
2745// true,
2746// true,
2747// )
2748// .head
2749// });
2750
2751// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2752// start_row..end_row,
2753// &active_rows,
2754// head_for_relative,
2755// is_singleton,
2756// &snapshot,
2757// cx,
2758// );
2759
2760// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2761
2762// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2763
2764// let mut max_visible_line_width = 0.0;
2765// let line_layouts =
2766// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2767// for line_with_invisibles in &line_layouts {
2768// if line_with_invisibles.line.width() > max_visible_line_width {
2769// max_visible_line_width = line_with_invisibles.line.width();
2770// }
2771// }
2772
2773// let style = self.style.clone();
2774// let longest_line_width = layout_line(
2775// snapshot.longest_row(),
2776// &snapshot,
2777// &style,
2778// cx.text_layout_cache(),
2779// )
2780// .width();
2781// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2782// let em_width = style.text.em_width(cx.font_cache());
2783// let (scroll_width, blocks) = self.layout_blocks(
2784// start_row..end_row,
2785// &snapshot,
2786// size.x,
2787// scroll_width,
2788// gutter_padding,
2789// gutter_width,
2790// em_width,
2791// gutter_width + gutter_margin,
2792// line_height,
2793// &style,
2794// &line_layouts,
2795// editor,
2796// cx,
2797// );
2798
2799// let scroll_max = point(
2800// ((scroll_width - text_size.x) / em_width).max(0.0),
2801// max_row as f32,
2802// );
2803
2804// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2805
2806// let autoscrolled = if autoscroll_horizontally {
2807// editor.autoscroll_horizontally(
2808// start_row,
2809// text_size.x,
2810// scroll_width,
2811// em_width,
2812// &line_layouts,
2813// cx,
2814// )
2815// } else {
2816// false
2817// };
2818
2819// if clamped || autoscrolled {
2820// snapshot = editor.snapshot(cx);
2821// }
2822
2823// let style = editor.style(cx);
2824
2825// let mut context_menu = None;
2826// let mut code_actions_indicator = None;
2827// if let Some(newest_selection_head) = newest_selection_head {
2828// if (start_row..end_row).contains(&newest_selection_head.row()) {
2829// if editor.context_menu_visible() {
2830// context_menu =
2831// editor.render_context_menu(newest_selection_head, style.clone(), cx);
2832// }
2833
2834// let active = matches!(
2835// editor.context_menu.read().as_ref(),
2836// Some(crate::ContextMenu::CodeActions(_))
2837// );
2838
2839// code_actions_indicator = editor
2840// .render_code_actions_indicator(&style, active, cx)
2841// .map(|indicator| (newest_selection_head.row(), indicator));
2842// }
2843// }
2844
2845// let visible_rows = start_row..start_row + line_layouts.len() as u32;
2846// let mut hover = editor.hover_state.render(
2847// &snapshot,
2848// &style,
2849// visible_rows,
2850// editor.workspace.as_ref().map(|(w, _)| w.clone()),
2851// cx,
2852// );
2853// let mode = editor.mode;
2854
2855// let mut fold_indicators = editor.render_fold_indicators(
2856// fold_statuses,
2857// &style,
2858// editor.gutter_hovered,
2859// line_height,
2860// gutter_margin,
2861// cx,
2862// );
2863
2864// if let Some((_, context_menu)) = context_menu.as_mut() {
2865// context_menu.layout(
2866// SizeConstraint {
2867// min: gpui::Point::<Pixels>::zero(),
2868// max: point(
2869// cx.window_size().x * 0.7,
2870// (12. * line_height).min((size.y - line_height) / 2.),
2871// ),
2872// },
2873// editor,
2874// cx,
2875// );
2876// }
2877
2878// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
2879// indicator.layout(
2880// SizeConstraint::strict_along(
2881// Axis::Vertical,
2882// line_height * style.code_actions.vertical_scale,
2883// ),
2884// editor,
2885// cx,
2886// );
2887// }
2888
2889// for fold_indicator in fold_indicators.iter_mut() {
2890// if let Some(indicator) = fold_indicator.as_mut() {
2891// indicator.layout(
2892// SizeConstraint::strict_along(
2893// Axis::Vertical,
2894// line_height * style.code_actions.vertical_scale,
2895// ),
2896// editor,
2897// cx,
2898// );
2899// }
2900// }
2901
2902// if let Some((_, hover_popovers)) = hover.as_mut() {
2903// for hover_popover in hover_popovers.iter_mut() {
2904// hover_popover.layout(
2905// SizeConstraint {
2906// min: gpui::Point::<Pixels>::zero(),
2907// max: point(
2908// (120. * em_width) // Default size
2909// .min(size.x / 2.) // Shrink to half of the editor width
2910// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2911// (16. * line_height) // Default size
2912// .min(size.y / 2.) // Shrink to half of the editor height
2913// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2914// ),
2915// },
2916// editor,
2917// cx,
2918// );
2919// }
2920// }
2921
2922// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
2923// let invisible_symbol_style = RunStyle {
2924// color: self.style.whitespace,
2925// font_id: self.style.text.font_id,
2926// underline: Default::default(),
2927// };
2928
2929// (
2930// size,
2931// LayoutState {
2932// mode,
2933// position_map: Arc::new(PositionMap {
2934// size,
2935// scroll_max,
2936// line_layouts,
2937// line_height,
2938// em_width,
2939// em_advance,
2940// snapshot,
2941// }),
2942// visible_display_row_range: start_row..end_row,
2943// wrap_guides,
2944// gutter_size,
2945// gutter_padding,
2946// text_size,
2947// scrollbar_row_range,
2948// show_scrollbars,
2949// is_singleton,
2950// max_row,
2951// gutter_margin,
2952// active_rows,
2953// highlighted_rows,
2954// highlighted_ranges,
2955// fold_ranges,
2956// line_number_layouts,
2957// display_hunks,
2958// blocks,
2959// selections,
2960// context_menu,
2961// code_actions_indicator,
2962// fold_indicators,
2963// tab_invisible: cx.text_layout_cache().layout_str(
2964// "→",
2965// invisible_symbol_font_size,
2966// &[("→".len(), invisible_symbol_style)],
2967// ),
2968// space_invisible: cx.text_layout_cache().layout_str(
2969// "•",
2970// invisible_symbol_font_size,
2971// &[("•".len(), invisible_symbol_style)],
2972// ),
2973// hover_popovers: hover,
2974// },
2975// )
2976// }
2977
2978// fn paint(
2979// &mut self,
2980// bounds: Bounds<Pixels>,
2981// visible_bounds: Bounds<Pixels>,
2982// layout: &mut Self::LayoutState,
2983// editor: &mut Editor,
2984// cx: &mut ViewContext<Editor>,
2985// ) -> Self::PaintState {
2986// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
2987// cx.scene().push_layer(Some(visible_bounds));
2988
2989// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
2990// let text_bounds = Bounds::<Pixels>::new(
2991// bounds.origin + point(layout.gutter_size.x, 0.0),
2992// layout.text_size,
2993// );
2994
2995// Self::attach_mouse_handlers(
2996// &layout.position_map,
2997// layout.hover_popovers.is_some(),
2998// visible_bounds,
2999// text_bounds,
3000// gutter_bounds,
3001// bounds,
3002// cx,
3003// );
3004
3005// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3006// if layout.gutter_size.x > 0. {
3007// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3008// }
3009// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3010
3011// cx.scene().push_layer(Some(bounds));
3012// if !layout.blocks.is_empty {
3013// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3014// }
3015// self.paint_scrollbar(bounds, layout, &editor, cx);
3016// cx.scene().pop_layer();
3017// cx.scene().pop_layer();
3018// }
3019
3020// fn rect_for_text_range(
3021// &self,
3022// range_utf16: Range<usize>,
3023// bounds: Bounds<Pixels>,
3024// _: Bounds<Pixels>,
3025// layout: &Self::LayoutState,
3026// _: &Self::PaintState,
3027// _: &Editor,
3028// _: &ViewContext<Editor>,
3029// ) -> Option<Bounds<Pixels>> {
3030// let text_bounds = Bounds::<Pixels>::new(
3031// bounds.origin + point(layout.gutter_size.x, 0.0),
3032// layout.text_size,
3033// );
3034// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3035// let scroll_position = layout.position_map.snapshot.scroll_position();
3036// let start_row = scroll_position.y as u32;
3037// let scroll_top = scroll_position.y * layout.position_map.line_height;
3038// let scroll_left = scroll_position.x * layout.position_map.em_width;
3039
3040// let range_start = OffsetUtf16(range_utf16.start)
3041// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3042// if range_start.row() < start_row {
3043// return None;
3044// }
3045
3046// let line = &layout
3047// .position_map
3048// .line_layouts
3049// .get((range_start.row() - start_row) as usize)?
3050// .line;
3051// let range_start_x = line.x_for_index(range_start.column() as usize);
3052// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3053// Some(Bounds::<Pixels>::new(
3054// content_origin
3055// + point(
3056// range_start_x,
3057// range_start_y + layout.position_map.line_height,
3058// )
3059// - point(scroll_left, scroll_top),
3060// point(
3061// layout.position_map.em_width,
3062// layout.position_map.line_height,
3063// ),
3064// ))
3065// }
3066
3067// fn debug(
3068// &self,
3069// bounds: Bounds<Pixels>,
3070// _: &Self::LayoutState,
3071// _: &Self::PaintState,
3072// _: &Editor,
3073// _: &ViewContext<Editor>,
3074// ) -> json::Value {
3075// json!({
3076// "type": "BufferElement",
3077// "bounds": bounds.to_json()
3078// })
3079// }
3080// }
3081
3082type BufferRow = u32;
3083
3084pub struct LayoutState {
3085 position_map: Arc<PositionMap>,
3086 gutter_size: Size<Pixels>,
3087 gutter_padding: Pixels,
3088 gutter_margin: Pixels,
3089 text_size: gpui::Size<Pixels>,
3090 mode: EditorMode,
3091 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3092 visible_anchor_range: Range<Anchor>,
3093 visible_display_row_range: Range<u32>,
3094 active_rows: BTreeMap<u32, bool>,
3095 highlighted_rows: Option<Range<u32>>,
3096 line_numbers: Vec<Option<ShapedLine>>,
3097 display_hunks: Vec<DisplayDiffHunk>,
3098 blocks: Vec<BlockLayout>,
3099 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3100 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3101 scrollbar_row_range: Range<f32>,
3102 show_scrollbars: bool,
3103 is_singleton: bool,
3104 max_row: u32,
3105 context_menu: Option<(DisplayPoint, AnyElement<Editor>)>,
3106 code_actions_indicator: Option<CodeActionsIndicator>,
3107 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement<Editor>>)>,
3108 fold_indicators: Vec<Option<IconButton<Editor>>>,
3109 tab_invisible: ShapedLine,
3110 space_invisible: ShapedLine,
3111}
3112
3113struct CodeActionsIndicator {
3114 row: u32,
3115 button: IconButton<Editor>,
3116}
3117
3118struct PositionMap {
3119 size: Size<Pixels>,
3120 line_height: Pixels,
3121 scroll_position: gpui::Point<Pixels>,
3122 scroll_max: gpui::Point<f32>,
3123 em_width: Pixels,
3124 em_advance: Pixels,
3125 line_layouts: Vec<LineWithInvisibles>,
3126 snapshot: EditorSnapshot,
3127}
3128
3129#[derive(Debug, Copy, Clone)]
3130pub struct PointForPosition {
3131 pub previous_valid: DisplayPoint,
3132 pub next_valid: DisplayPoint,
3133 pub exact_unclipped: DisplayPoint,
3134 pub column_overshoot_after_line_end: u32,
3135}
3136
3137impl PointForPosition {
3138 #[cfg(test)]
3139 pub fn valid(valid: DisplayPoint) -> Self {
3140 Self {
3141 previous_valid: valid,
3142 next_valid: valid,
3143 exact_unclipped: valid,
3144 column_overshoot_after_line_end: 0,
3145 }
3146 }
3147
3148 pub fn as_valid(&self) -> Option<DisplayPoint> {
3149 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3150 Some(self.previous_valid)
3151 } else {
3152 None
3153 }
3154 }
3155}
3156
3157impl PositionMap {
3158 fn point_for_position(
3159 &self,
3160 text_bounds: Bounds<Pixels>,
3161 position: gpui::Point<Pixels>,
3162 ) -> PointForPosition {
3163 let scroll_position = self.snapshot.scroll_position();
3164 let position = position - text_bounds.origin;
3165 let y = position.y.max(px(0.)).min(self.size.width);
3166 let x = position.x + (scroll_position.x * self.em_width);
3167 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3168
3169 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3170 .line_layouts
3171 .get(row as usize - scroll_position.y as usize)
3172 .map(|&LineWithInvisibles { ref line, .. }| line)
3173 {
3174 if let Some(ix) = line.index_for_x(x) {
3175 (ix as u32, px(0.))
3176 } else {
3177 (line.len as u32, px(0.).max(x - line.width))
3178 }
3179 } else {
3180 (0, x)
3181 };
3182
3183 let mut exact_unclipped = DisplayPoint::new(row, column);
3184 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3185 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3186
3187 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3188 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3189 PointForPosition {
3190 previous_valid,
3191 next_valid,
3192 exact_unclipped,
3193 column_overshoot_after_line_end,
3194 }
3195 }
3196}
3197
3198struct BlockLayout {
3199 row: u32,
3200 element: AnyElement<Editor>,
3201 available_space: Size<AvailableSpace>,
3202 style: BlockStyle,
3203}
3204
3205fn layout_line(
3206 row: u32,
3207 snapshot: &EditorSnapshot,
3208 style: &EditorStyle,
3209 cx: &WindowContext,
3210) -> Result<ShapedLine> {
3211 let mut line = snapshot.line(row);
3212
3213 if line.len() > MAX_LINE_LEN {
3214 let mut len = MAX_LINE_LEN;
3215 while !line.is_char_boundary(len) {
3216 len -= 1;
3217 }
3218
3219 line.truncate(len);
3220 }
3221
3222 cx.text_system().shape_line(
3223 line.into(),
3224 style.text.font_size.to_pixels(cx.rem_size()),
3225 &[TextRun {
3226 len: snapshot.line_len(row) as usize,
3227 font: style.text.font(),
3228 color: Hsla::default(),
3229 background_color: None,
3230 underline: None,
3231 }],
3232 )
3233}
3234
3235#[derive(Debug)]
3236pub struct Cursor {
3237 origin: gpui::Point<Pixels>,
3238 block_width: Pixels,
3239 line_height: Pixels,
3240 color: Hsla,
3241 shape: CursorShape,
3242 block_text: Option<ShapedLine>,
3243}
3244
3245impl Cursor {
3246 pub fn new(
3247 origin: gpui::Point<Pixels>,
3248 block_width: Pixels,
3249 line_height: Pixels,
3250 color: Hsla,
3251 shape: CursorShape,
3252 block_text: Option<ShapedLine>,
3253 ) -> Cursor {
3254 Cursor {
3255 origin,
3256 block_width,
3257 line_height,
3258 color,
3259 shape,
3260 block_text,
3261 }
3262 }
3263
3264 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3265 Bounds {
3266 origin: self.origin + origin,
3267 size: size(self.block_width, self.line_height),
3268 }
3269 }
3270
3271 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3272 let bounds = match self.shape {
3273 CursorShape::Bar => Bounds {
3274 origin: self.origin + origin,
3275 size: size(px(2.0), self.line_height),
3276 },
3277 CursorShape::Block | CursorShape::Hollow => Bounds {
3278 origin: self.origin + origin,
3279 size: size(self.block_width, self.line_height),
3280 },
3281 CursorShape::Underscore => Bounds {
3282 origin: self.origin
3283 + origin
3284 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3285 size: size(self.block_width, px(2.0)),
3286 },
3287 };
3288
3289 //Draw background or border quad
3290 if matches!(self.shape, CursorShape::Hollow) {
3291 cx.paint_quad(
3292 bounds,
3293 Corners::default(),
3294 transparent_black(),
3295 Edges::all(px(1.)),
3296 self.color,
3297 );
3298 } else {
3299 cx.paint_quad(
3300 bounds,
3301 Corners::default(),
3302 self.color,
3303 Edges::default(),
3304 transparent_black(),
3305 );
3306 }
3307
3308 if let Some(block_text) = &self.block_text {
3309 block_text.paint(self.origin + origin, self.line_height, cx);
3310 }
3311 }
3312
3313 pub fn shape(&self) -> CursorShape {
3314 self.shape
3315 }
3316}
3317
3318#[derive(Debug)]
3319pub struct HighlightedRange {
3320 pub start_y: Pixels,
3321 pub line_height: Pixels,
3322 pub lines: Vec<HighlightedRangeLine>,
3323 pub color: Hsla,
3324 pub corner_radius: Pixels,
3325}
3326
3327#[derive(Debug)]
3328pub struct HighlightedRangeLine {
3329 pub start_x: Pixels,
3330 pub end_x: Pixels,
3331}
3332
3333impl HighlightedRange {
3334 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3335 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3336 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3337 self.paint_lines(
3338 self.start_y + self.line_height,
3339 &self.lines[1..],
3340 bounds,
3341 cx,
3342 );
3343 } else {
3344 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3345 }
3346 }
3347
3348 fn paint_lines(
3349 &self,
3350 start_y: Pixels,
3351 lines: &[HighlightedRangeLine],
3352 bounds: Bounds<Pixels>,
3353 cx: &mut WindowContext,
3354 ) {
3355 if lines.is_empty() {
3356 return;
3357 }
3358
3359 let first_line = lines.first().unwrap();
3360 let last_line = lines.last().unwrap();
3361
3362 let first_top_left = point(first_line.start_x, start_y);
3363 let first_top_right = point(first_line.end_x, start_y);
3364
3365 let curve_height = point(Pixels::ZERO, self.corner_radius);
3366 let curve_width = |start_x: Pixels, end_x: Pixels| {
3367 let max = (end_x - start_x) / 2.;
3368 let width = if max < self.corner_radius {
3369 max
3370 } else {
3371 self.corner_radius
3372 };
3373
3374 point(width, Pixels::ZERO)
3375 };
3376
3377 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3378 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3379 path.curve_to(first_top_right + curve_height, first_top_right);
3380
3381 let mut iter = lines.iter().enumerate().peekable();
3382 while let Some((ix, line)) = iter.next() {
3383 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3384
3385 if let Some((_, next_line)) = iter.peek() {
3386 let next_top_right = point(next_line.end_x, bottom_right.y);
3387
3388 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3389 Ordering::Equal => {
3390 path.line_to(bottom_right);
3391 }
3392 Ordering::Less => {
3393 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3394 path.line_to(bottom_right - curve_height);
3395 if self.corner_radius > Pixels::ZERO {
3396 path.curve_to(bottom_right - curve_width, bottom_right);
3397 }
3398 path.line_to(next_top_right + curve_width);
3399 if self.corner_radius > Pixels::ZERO {
3400 path.curve_to(next_top_right + curve_height, next_top_right);
3401 }
3402 }
3403 Ordering::Greater => {
3404 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3405 path.line_to(bottom_right - curve_height);
3406 if self.corner_radius > Pixels::ZERO {
3407 path.curve_to(bottom_right + curve_width, bottom_right);
3408 }
3409 path.line_to(next_top_right - curve_width);
3410 if self.corner_radius > Pixels::ZERO {
3411 path.curve_to(next_top_right + curve_height, next_top_right);
3412 }
3413 }
3414 }
3415 } else {
3416 let curve_width = curve_width(line.start_x, line.end_x);
3417 path.line_to(bottom_right - curve_height);
3418 if self.corner_radius > Pixels::ZERO {
3419 path.curve_to(bottom_right - curve_width, bottom_right);
3420 }
3421
3422 let bottom_left = point(line.start_x, bottom_right.y);
3423 path.line_to(bottom_left + curve_width);
3424 if self.corner_radius > Pixels::ZERO {
3425 path.curve_to(bottom_left - curve_height, bottom_left);
3426 }
3427 }
3428 }
3429
3430 if first_line.start_x > last_line.start_x {
3431 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3432 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3433 path.line_to(second_top_left + curve_height);
3434 if self.corner_radius > Pixels::ZERO {
3435 path.curve_to(second_top_left + curve_width, second_top_left);
3436 }
3437 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3438 path.line_to(first_bottom_left - curve_width);
3439 if self.corner_radius > Pixels::ZERO {
3440 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3441 }
3442 }
3443
3444 path.line_to(first_top_left + curve_height);
3445 if self.corner_radius > Pixels::ZERO {
3446 path.curve_to(first_top_left + top_curve_width, first_top_left);
3447 }
3448 path.line_to(first_top_right - top_curve_width);
3449
3450 cx.paint_path(path, self.color);
3451 }
3452}
3453
3454pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3455 (delta.pow(1.5) / 100.0).into()
3456}
3457
3458fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3459 (delta.pow(1.2) / 300.0).into()
3460}
3461
3462// #[cfg(test)]
3463// mod tests {
3464// use super::*;
3465// use crate::{
3466// display_map::{BlockDisposition, BlockProperties},
3467// editor_tests::{init_test, update_test_language_settings},
3468// Editor, MultiBuffer,
3469// };
3470// use gpui::TestAppContext;
3471// use language::language_settings;
3472// use log::info;
3473// use std::{num::NonZeroU32, sync::Arc};
3474// use util::test::sample_text;
3475
3476// #[gpui::test]
3477// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3478// init_test(cx, |_| {});
3479// let editor = cx
3480// .add_window(|cx| {
3481// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3482// Editor::new(EditorMode::Full, buffer, None, None, cx)
3483// })
3484// .root(cx);
3485// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3486
3487// let layouts = editor.update(cx, |editor, cx| {
3488// let snapshot = editor.snapshot(cx);
3489// element
3490// .layout_line_numbers(
3491// 0..6,
3492// &Default::default(),
3493// DisplayPoint::new(0, 0),
3494// false,
3495// &snapshot,
3496// cx,
3497// )
3498// .0
3499// });
3500// assert_eq!(layouts.len(), 6);
3501
3502// let relative_rows = editor.update(cx, |editor, cx| {
3503// let snapshot = editor.snapshot(cx);
3504// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3505// });
3506// assert_eq!(relative_rows[&0], 3);
3507// assert_eq!(relative_rows[&1], 2);
3508// assert_eq!(relative_rows[&2], 1);
3509// // current line has no relative number
3510// assert_eq!(relative_rows[&4], 1);
3511// assert_eq!(relative_rows[&5], 2);
3512
3513// // works if cursor is before screen
3514// let relative_rows = editor.update(cx, |editor, cx| {
3515// let snapshot = editor.snapshot(cx);
3516
3517// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3518// });
3519// assert_eq!(relative_rows.len(), 3);
3520// assert_eq!(relative_rows[&3], 2);
3521// assert_eq!(relative_rows[&4], 3);
3522// assert_eq!(relative_rows[&5], 4);
3523
3524// // works if cursor is after screen
3525// let relative_rows = editor.update(cx, |editor, cx| {
3526// let snapshot = editor.snapshot(cx);
3527
3528// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3529// });
3530// assert_eq!(relative_rows.len(), 3);
3531// assert_eq!(relative_rows[&0], 5);
3532// assert_eq!(relative_rows[&1], 4);
3533// assert_eq!(relative_rows[&2], 3);
3534// }
3535
3536// #[gpui::test]
3537// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3538// init_test(cx, |_| {});
3539
3540// let editor = cx
3541// .add_window(|cx| {
3542// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3543// Editor::new(EditorMode::Full, buffer, None, None, cx)
3544// })
3545// .root(cx);
3546// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3547// let (_, state) = editor.update(cx, |editor, cx| {
3548// editor.cursor_shape = CursorShape::Block;
3549// editor.change_selections(None, cx, |s| {
3550// s.select_ranges([
3551// Point::new(0, 0)..Point::new(1, 0),
3552// Point::new(3, 2)..Point::new(3, 3),
3553// Point::new(5, 6)..Point::new(6, 0),
3554// ]);
3555// });
3556// element.layout(
3557// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3558// editor,
3559// cx,
3560// )
3561// });
3562// assert_eq!(state.selections.len(), 1);
3563// let local_selections = &state.selections[0].1;
3564// assert_eq!(local_selections.len(), 3);
3565// // moves cursor back one line
3566// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3567// assert_eq!(
3568// local_selections[0].range,
3569// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3570// );
3571
3572// // moves cursor back one column
3573// assert_eq!(
3574// local_selections[1].range,
3575// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3576// );
3577// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3578
3579// // leaves cursor on the max point
3580// assert_eq!(
3581// local_selections[2].range,
3582// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3583// );
3584// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3585
3586// // active lines does not include 1 (even though the range of the selection does)
3587// assert_eq!(
3588// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3589// vec![0, 3, 5, 6]
3590// );
3591
3592// // multi-buffer support
3593// // in DisplayPoint co-ordinates, this is what we're dealing with:
3594// // 0: [[file
3595// // 1: header]]
3596// // 2: aaaaaa
3597// // 3: bbbbbb
3598// // 4: cccccc
3599// // 5:
3600// // 6: ...
3601// // 7: ffffff
3602// // 8: gggggg
3603// // 9: hhhhhh
3604// // 10:
3605// // 11: [[file
3606// // 12: header]]
3607// // 13: bbbbbb
3608// // 14: cccccc
3609// // 15: dddddd
3610// let editor = cx
3611// .add_window(|cx| {
3612// let buffer = MultiBuffer::build_multi(
3613// [
3614// (
3615// &(sample_text(8, 6, 'a') + "\n"),
3616// vec![
3617// Point::new(0, 0)..Point::new(3, 0),
3618// Point::new(4, 0)..Point::new(7, 0),
3619// ],
3620// ),
3621// (
3622// &(sample_text(8, 6, 'a') + "\n"),
3623// vec![Point::new(1, 0)..Point::new(3, 0)],
3624// ),
3625// ],
3626// cx,
3627// );
3628// Editor::new(EditorMode::Full, buffer, None, None, cx)
3629// })
3630// .root(cx);
3631// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3632// let (_, state) = editor.update(cx, |editor, cx| {
3633// editor.cursor_shape = CursorShape::Block;
3634// editor.change_selections(None, cx, |s| {
3635// s.select_display_ranges([
3636// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3637// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3638// ]);
3639// });
3640// element.layout(
3641// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3642// editor,
3643// cx,
3644// )
3645// });
3646
3647// assert_eq!(state.selections.len(), 1);
3648// let local_selections = &state.selections[0].1;
3649// assert_eq!(local_selections.len(), 2);
3650
3651// // moves cursor on excerpt boundary back a line
3652// // and doesn't allow selection to bleed through
3653// assert_eq!(
3654// local_selections[0].range,
3655// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3656// );
3657// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3658
3659// // moves cursor on buffer boundary back two lines
3660// // and doesn't allow selection to bleed through
3661// assert_eq!(
3662// local_selections[1].range,
3663// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3664// );
3665// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3666// }
3667
3668// #[gpui::test]
3669// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3670// init_test(cx, |_| {});
3671
3672// let editor = cx
3673// .add_window(|cx| {
3674// let buffer = MultiBuffer::build_simple("", cx);
3675// Editor::new(EditorMode::Full, buffer, None, None, cx)
3676// })
3677// .root(cx);
3678
3679// editor.update(cx, |editor, cx| {
3680// editor.set_placeholder_text("hello", cx);
3681// editor.insert_blocks(
3682// [BlockProperties {
3683// style: BlockStyle::Fixed,
3684// disposition: BlockDisposition::Above,
3685// height: 3,
3686// position: Anchor::min(),
3687// render: Arc::new(|_| Empty::new().into_any),
3688// }],
3689// None,
3690// cx,
3691// );
3692
3693// // Blur the editor so that it displays placeholder text.
3694// cx.blur();
3695// });
3696
3697// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3698// let (size, mut state) = editor.update(cx, |editor, cx| {
3699// element.layout(
3700// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3701// editor,
3702// cx,
3703// )
3704// });
3705
3706// assert_eq!(state.position_map.line_layouts.len(), 4);
3707// assert_eq!(
3708// state
3709// .line_number_layouts
3710// .iter()
3711// .map(Option::is_some)
3712// .collect::<Vec<_>>(),
3713// &[false, false, false, true]
3714// );
3715
3716// // Don't panic.
3717// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3718// editor.update(cx, |editor, cx| {
3719// element.paint(bounds, bounds, &mut state, editor, cx);
3720// });
3721// }
3722
3723// #[gpui::test]
3724// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3725// const TAB_SIZE: u32 = 4;
3726
3727// let input_text = "\t \t|\t| a b";
3728// let expected_invisibles = vec![
3729// Invisible::Tab {
3730// line_start_offset: 0,
3731// },
3732// Invisible::Whitespace {
3733// line_offset: TAB_SIZE as usize,
3734// },
3735// Invisible::Tab {
3736// line_start_offset: TAB_SIZE as usize + 1,
3737// },
3738// Invisible::Tab {
3739// line_start_offset: TAB_SIZE as usize * 2 + 1,
3740// },
3741// Invisible::Whitespace {
3742// line_offset: TAB_SIZE as usize * 3 + 1,
3743// },
3744// Invisible::Whitespace {
3745// line_offset: TAB_SIZE as usize * 3 + 3,
3746// },
3747// ];
3748// assert_eq!(
3749// expected_invisibles.len(),
3750// input_text
3751// .chars()
3752// .filter(|initial_char| initial_char.is_whitespace())
3753// .count(),
3754// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3755// );
3756
3757// init_test(cx, |s| {
3758// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3759// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3760// });
3761
3762// let actual_invisibles =
3763// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3764
3765// assert_eq!(expected_invisibles, actual_invisibles);
3766// }
3767
3768// #[gpui::test]
3769// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3770// init_test(cx, |s| {
3771// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3772// s.defaults.tab_size = NonZeroU32::new(4);
3773// });
3774
3775// for editor_mode_without_invisibles in [
3776// EditorMode::SingleLine,
3777// EditorMode::AutoHeight { max_lines: 100 },
3778// ] {
3779// let invisibles = collect_invisibles_from_new_editor(
3780// cx,
3781// editor_mode_without_invisibles,
3782// "\t\t\t| | a b",
3783// 500.0,
3784// );
3785// assert!(invisibles.is_empty,
3786// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3787// }
3788// }
3789
3790// #[gpui::test]
3791// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3792// let tab_size = 4;
3793// let input_text = "a\tbcd ".repeat(9);
3794// let repeated_invisibles = [
3795// Invisible::Tab {
3796// line_start_offset: 1,
3797// },
3798// Invisible::Whitespace {
3799// line_offset: tab_size as usize + 3,
3800// },
3801// Invisible::Whitespace {
3802// line_offset: tab_size as usize + 4,
3803// },
3804// Invisible::Whitespace {
3805// line_offset: tab_size as usize + 5,
3806// },
3807// ];
3808// let expected_invisibles = std::iter::once(repeated_invisibles)
3809// .cycle()
3810// .take(9)
3811// .flatten()
3812// .collect::<Vec<_>>();
3813// assert_eq!(
3814// expected_invisibles.len(),
3815// input_text
3816// .chars()
3817// .filter(|initial_char| initial_char.is_whitespace())
3818// .count(),
3819// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3820// );
3821// info!("Expected invisibles: {expected_invisibles:?}");
3822
3823// init_test(cx, |_| {});
3824
3825// // Put the same string with repeating whitespace pattern into editors of various size,
3826// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3827// let resize_step = 10.0;
3828// let mut editor_width = 200.0;
3829// while editor_width <= 1000.0 {
3830// update_test_language_settings(cx, |s| {
3831// s.defaults.tab_size = NonZeroU32::new(tab_size);
3832// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3833// s.defaults.preferred_line_length = Some(editor_width as u32);
3834// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3835// });
3836
3837// let actual_invisibles =
3838// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
3839
3840// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3841// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3842// let mut i = 0;
3843// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3844// i = actual_index;
3845// match expected_invisibles.get(i) {
3846// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3847// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3848// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3849// _ => {
3850// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3851// }
3852// },
3853// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3854// }
3855// }
3856// let missing_expected_invisibles = &expected_invisibles[i + 1..];
3857// assert!(
3858// missing_expected_invisibles.is_empty,
3859// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3860// );
3861
3862// editor_width += resize_step;
3863// }
3864// }
3865
3866// fn collect_invisibles_from_new_editor(
3867// cx: &mut TestAppContext,
3868// editor_mode: EditorMode,
3869// input_text: &str,
3870// editor_width: f32,
3871// ) -> Vec<Invisible> {
3872// info!(
3873// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
3874// );
3875// let editor = cx
3876// .add_window(|cx| {
3877// let buffer = MultiBuffer::build_simple(&input_text, cx);
3878// Editor::new(editor_mode, buffer, None, None, cx)
3879// })
3880// .root(cx);
3881
3882// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3883// let (_, layout_state) = editor.update(cx, |editor, cx| {
3884// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3885// editor.set_wrap_width(Some(editor_width), cx);
3886
3887// element.layout(
3888// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
3889// editor,
3890// cx,
3891// )
3892// });
3893
3894// layout_state
3895// .position_map
3896// .line_layouts
3897// .iter()
3898// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3899// .flatten()
3900// .cloned()
3901// .collect()
3902// }
3903// }
3904
3905fn register_actions(cx: &mut ViewContext<Editor>) {
3906 register_action(cx, Editor::move_left);
3907 register_action(cx, Editor::move_right);
3908 register_action(cx, Editor::move_down);
3909 register_action(cx, Editor::move_up);
3910 // on_action(cx, Editor::new_file); todo!()
3911 // on_action(cx, Editor::new_file_in_direction); todo!()
3912 register_action(cx, Editor::cancel);
3913 register_action(cx, Editor::newline);
3914 register_action(cx, Editor::newline_above);
3915 register_action(cx, Editor::newline_below);
3916 register_action(cx, Editor::backspace);
3917 register_action(cx, Editor::delete);
3918 register_action(cx, Editor::tab);
3919 register_action(cx, Editor::tab_prev);
3920 register_action(cx, Editor::indent);
3921 register_action(cx, Editor::outdent);
3922 register_action(cx, Editor::delete_line);
3923 register_action(cx, Editor::join_lines);
3924 register_action(cx, Editor::sort_lines_case_sensitive);
3925 register_action(cx, Editor::sort_lines_case_insensitive);
3926 register_action(cx, Editor::reverse_lines);
3927 register_action(cx, Editor::shuffle_lines);
3928 register_action(cx, Editor::convert_to_upper_case);
3929 register_action(cx, Editor::convert_to_lower_case);
3930 register_action(cx, Editor::convert_to_title_case);
3931 register_action(cx, Editor::convert_to_snake_case);
3932 register_action(cx, Editor::convert_to_kebab_case);
3933 register_action(cx, Editor::convert_to_upper_camel_case);
3934 register_action(cx, Editor::convert_to_lower_camel_case);
3935 register_action(cx, Editor::delete_to_previous_word_start);
3936 register_action(cx, Editor::delete_to_previous_subword_start);
3937 register_action(cx, Editor::delete_to_next_word_end);
3938 register_action(cx, Editor::delete_to_next_subword_end);
3939 register_action(cx, Editor::delete_to_beginning_of_line);
3940 register_action(cx, Editor::delete_to_end_of_line);
3941 register_action(cx, Editor::cut_to_end_of_line);
3942 register_action(cx, Editor::duplicate_line);
3943 register_action(cx, Editor::move_line_up);
3944 register_action(cx, Editor::move_line_down);
3945 register_action(cx, Editor::transpose);
3946 register_action(cx, Editor::cut);
3947 register_action(cx, Editor::copy);
3948 register_action(cx, Editor::paste);
3949 register_action(cx, Editor::undo);
3950 register_action(cx, Editor::redo);
3951 register_action(cx, Editor::move_page_up);
3952 register_action(cx, Editor::move_page_down);
3953 register_action(cx, Editor::next_screen);
3954 register_action(cx, Editor::scroll_cursor_top);
3955 register_action(cx, Editor::scroll_cursor_center);
3956 register_action(cx, Editor::scroll_cursor_bottom);
3957 register_action(cx, |editor, _: &LineDown, cx| {
3958 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
3959 });
3960 register_action(cx, |editor, _: &LineUp, cx| {
3961 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
3962 });
3963 register_action(cx, |editor, _: &HalfPageDown, cx| {
3964 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
3965 });
3966 register_action(cx, |editor, _: &HalfPageUp, cx| {
3967 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
3968 });
3969 register_action(cx, |editor, _: &PageDown, cx| {
3970 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
3971 });
3972 register_action(cx, |editor, _: &PageUp, cx| {
3973 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
3974 });
3975 register_action(cx, Editor::move_to_previous_word_start);
3976 register_action(cx, Editor::move_to_previous_subword_start);
3977 register_action(cx, Editor::move_to_next_word_end);
3978 register_action(cx, Editor::move_to_next_subword_end);
3979 register_action(cx, Editor::move_to_beginning_of_line);
3980 register_action(cx, Editor::move_to_end_of_line);
3981 register_action(cx, Editor::move_to_start_of_paragraph);
3982 register_action(cx, Editor::move_to_end_of_paragraph);
3983 register_action(cx, Editor::move_to_beginning);
3984 register_action(cx, Editor::move_to_end);
3985 register_action(cx, Editor::select_up);
3986 register_action(cx, Editor::select_down);
3987 register_action(cx, Editor::select_left);
3988 register_action(cx, Editor::select_right);
3989 register_action(cx, Editor::select_to_previous_word_start);
3990 register_action(cx, Editor::select_to_previous_subword_start);
3991 register_action(cx, Editor::select_to_next_word_end);
3992 register_action(cx, Editor::select_to_next_subword_end);
3993 register_action(cx, Editor::select_to_beginning_of_line);
3994 register_action(cx, Editor::select_to_end_of_line);
3995 register_action(cx, Editor::select_to_start_of_paragraph);
3996 register_action(cx, Editor::select_to_end_of_paragraph);
3997 register_action(cx, Editor::select_to_beginning);
3998 register_action(cx, Editor::select_to_end);
3999 register_action(cx, Editor::select_all);
4000 register_action(cx, |editor, action, cx| {
4001 editor.select_all_matches(action, cx).log_err();
4002 });
4003 register_action(cx, Editor::select_line);
4004 register_action(cx, Editor::split_selection_into_lines);
4005 register_action(cx, Editor::add_selection_above);
4006 register_action(cx, Editor::add_selection_below);
4007 register_action(cx, |editor, action, cx| {
4008 editor.select_next(action, cx).log_err();
4009 });
4010 register_action(cx, |editor, action, cx| {
4011 editor.select_previous(action, cx).log_err();
4012 });
4013 register_action(cx, Editor::toggle_comments);
4014 register_action(cx, Editor::select_larger_syntax_node);
4015 register_action(cx, Editor::select_smaller_syntax_node);
4016 register_action(cx, Editor::move_to_enclosing_bracket);
4017 register_action(cx, Editor::undo_selection);
4018 register_action(cx, Editor::redo_selection);
4019 register_action(cx, Editor::go_to_diagnostic);
4020 register_action(cx, Editor::go_to_prev_diagnostic);
4021 register_action(cx, Editor::go_to_hunk);
4022 register_action(cx, Editor::go_to_prev_hunk);
4023 register_action(cx, Editor::go_to_definition);
4024 register_action(cx, Editor::go_to_definition_split);
4025 register_action(cx, Editor::go_to_type_definition);
4026 register_action(cx, Editor::go_to_type_definition_split);
4027 register_action(cx, Editor::fold);
4028 register_action(cx, Editor::fold_at);
4029 register_action(cx, Editor::unfold_lines);
4030 register_action(cx, Editor::unfold_at);
4031 register_action(cx, Editor::fold_selected_ranges);
4032 register_action(cx, Editor::show_completions);
4033 register_action(cx, Editor::toggle_code_actions);
4034 // on_action(cx, Editor::open_excerpts); todo!()
4035 register_action(cx, Editor::toggle_soft_wrap);
4036 register_action(cx, Editor::toggle_inlay_hints);
4037 register_action(cx, Editor::reveal_in_finder);
4038 register_action(cx, Editor::copy_path);
4039 register_action(cx, Editor::copy_relative_path);
4040 register_action(cx, Editor::copy_highlight_json);
4041 register_action(cx, |editor, action, cx| {
4042 editor
4043 .format(action, cx)
4044 .map(|task| task.detach_and_log_err(cx));
4045 });
4046 register_action(cx, Editor::restart_language_server);
4047 register_action(cx, Editor::show_character_palette);
4048 // on_action(cx, Editor::confirm_completion); todo!()
4049 register_action(cx, |editor, action, cx| {
4050 editor
4051 .confirm_code_action(action, cx)
4052 .map(|task| task.detach_and_log_err(cx));
4053 });
4054 register_action(cx, |editor, action, cx| {
4055 editor
4056 .rename(action, cx)
4057 .map(|task| task.detach_and_log_err(cx));
4058 });
4059 register_action(cx, |editor, action, cx| {
4060 editor
4061 .confirm_rename(action, cx)
4062 .map(|task| task.detach_and_log_err(cx));
4063 });
4064 register_action(cx, |editor, action, cx| {
4065 editor
4066 .find_all_references(action, cx)
4067 .map(|task| task.detach_and_log_err(cx));
4068 });
4069 register_action(cx, Editor::next_copilot_suggestion);
4070 register_action(cx, Editor::previous_copilot_suggestion);
4071 register_action(cx, Editor::copilot_suggest);
4072 register_action(cx, Editor::context_menu_first);
4073 register_action(cx, Editor::context_menu_prev);
4074 register_action(cx, Editor::context_menu_next);
4075 register_action(cx, Editor::context_menu_last);
4076}
4077
4078fn register_action<T: Action>(
4079 cx: &mut ViewContext<Editor>,
4080 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4081) {
4082 cx.on_action(TypeId::of::<T>(), move |editor, action, phase, cx| {
4083 let action = action.downcast_ref().unwrap();
4084 if phase == DispatchPhase::Bubble {
4085 listener(editor, action, cx);
4086 }
4087 })
4088}