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, WeakView, 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: View<Editor>,
116 style: EditorStyle,
117}
118
119impl EditorElement {
120 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
121 Self {
122 editor: editor.clone(),
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 WindowContext,
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 WindowContext,
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, 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, 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, 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, cx);
528 }
529 }
530
531 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut WindowContext) {
532 // todo!()
533 // let diff_style = &theme::current(cx).editor.diff.clone();
534 // let line_height = layout.position_map.line_height;
535
536 // let scroll_position = layout.position_map.snapshot.scroll_position();
537 // let scroll_top = scroll_position.y * line_height;
538
539 // for hunk in &layout.display_hunks {
540 // let (display_row_range, status) = match hunk {
541 // //TODO: This rendering is entirely a horrible hack
542 // &DisplayDiffHunk::Folded { display_row: row } => {
543 // let start_y = row as f32 * line_height - scroll_top;
544 // let end_y = start_y + line_height;
545
546 // let width = diff_style.removed_width_em * line_height;
547 // let highlight_origin = bounds.origin + point(-width, start_y);
548 // let highlight_size = point(width * 2., end_y - start_y);
549 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
550
551 // cx.paint_quad(Quad {
552 // bounds: highlight_bounds,
553 // background: Some(diff_style.modified),
554 // border: Border::new(0., Color::transparent_black()).into(),
555 // corner_radii: (1. * line_height).into(),
556 // });
557
558 // continue;
559 // }
560
561 // DisplayDiffHunk::Unfolded {
562 // display_row_range,
563 // status,
564 // } => (display_row_range, status),
565 // };
566
567 // let color = match status {
568 // DiffHunkStatus::Added => diff_style.inserted,
569 // DiffHunkStatus::Modified => diff_style.modified,
570
571 // //TODO: This rendering is entirely a horrible hack
572 // DiffHunkStatus::Removed => {
573 // let row = display_row_range.start;
574
575 // let offset = line_height / 2.;
576 // let start_y = row as f32 * line_height - offset - scroll_top;
577 // let end_y = start_y + line_height;
578
579 // let width = diff_style.removed_width_em * line_height;
580 // let highlight_origin = bounds.origin + point(-width, start_y);
581 // let highlight_size = point(width * 2., end_y - start_y);
582 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
583
584 // cx.paint_quad(Quad {
585 // bounds: highlight_bounds,
586 // background: Some(diff_style.deleted),
587 // border: Border::new(0., Color::transparent_black()).into(),
588 // corner_radii: (1. * line_height).into(),
589 // });
590
591 // continue;
592 // }
593 // };
594
595 // let start_row = display_row_range.start;
596 // let end_row = display_row_range.end;
597
598 // let start_y = start_row as f32 * line_height - scroll_top;
599 // let end_y = end_row as f32 * line_height - scroll_top;
600
601 // let width = diff_style.width_em * line_height;
602 // let highlight_origin = bounds.origin + point(-width, start_y);
603 // let highlight_size = point(width * 2., end_y - start_y);
604 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
605
606 // cx.paint_quad(Quad {
607 // bounds: highlight_bounds,
608 // background: Some(color),
609 // border: Border::new(0., Color::transparent_black()).into(),
610 // corner_radii: (diff_style.corner_radius * line_height).into(),
611 // });
612 // }
613 }
614
615 fn paint_text(
616 &mut self,
617 text_bounds: Bounds<Pixels>,
618 layout: &mut LayoutState,
619 editor: &mut Editor,
620 cx: &mut WindowContext,
621 ) {
622 let scroll_position = layout.position_map.snapshot.scroll_position();
623 let start_row = layout.visible_display_row_range.start;
624 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
625 let line_end_overshoot = 0.15 * layout.position_map.line_height;
626 let whitespace_setting = editor.buffer.read(cx).settings_at(0, cx).show_whitespaces;
627
628 cx.with_content_mask(
629 Some(ContentMask {
630 bounds: text_bounds,
631 }),
632 |cx| {
633 // todo!("cursor region")
634 // cx.scene().push_cursor_region(CursorRegion {
635 // bounds,
636 // style: if !editor.link_go_to_definition_state.definitions.is_empty {
637 // CursorStyle::PointingHand
638 // } else {
639 // CursorStyle::IBeam
640 // },
641 // });
642
643 let fold_corner_radius = 0.15 * layout.position_map.line_height;
644 cx.with_element_id(Some("folds"), |cx| {
645 let snapshot = &layout.position_map.snapshot;
646 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
647 let fold_range = fold.range.clone();
648 let display_range = fold.range.start.to_display_point(&snapshot)
649 ..fold.range.end.to_display_point(&snapshot);
650 debug_assert_eq!(display_range.start.row(), display_range.end.row());
651 let row = display_range.start.row();
652
653 let line_layout = &layout.position_map.line_layouts
654 [(row - layout.visible_display_row_range.start) as usize]
655 .line;
656 let start_x = content_origin.x
657 + line_layout.x_for_index(display_range.start.column() as usize)
658 - layout.position_map.scroll_position.x;
659 let start_y = content_origin.y
660 + row as f32 * layout.position_map.line_height
661 - layout.position_map.scroll_position.y;
662 let end_x = content_origin.x
663 + line_layout.x_for_index(display_range.end.column() as usize)
664 - layout.position_map.scroll_position.x;
665
666 let fold_bounds = Bounds {
667 origin: point(start_x, start_y),
668 size: size(end_x - start_x, layout.position_map.line_height),
669 };
670
671 let fold_background = cx.with_z_index(1, |cx| {
672 div()
673 .id(fold.id)
674 .size_full()
675 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
676 .on_click(cx.listener_for(
677 &self.editor,
678 move |editor: &mut Editor, _, cx| {
679 editor.unfold_ranges(
680 [fold_range.start..fold_range.end],
681 true,
682 false,
683 cx,
684 );
685 cx.stop_propagation();
686 },
687 ))
688 .draw(
689 fold_bounds.origin,
690 fold_bounds.size,
691 cx,
692 |fold_element_state, cx| {
693 if fold_element_state.is_active() {
694 gpui::blue()
695 } else if fold_bounds.contains_point(&cx.mouse_position()) {
696 gpui::black()
697 } else {
698 gpui::red()
699 }
700 },
701 )
702 });
703
704 self.paint_highlighted_range(
705 display_range.clone(),
706 fold_background,
707 fold_corner_radius,
708 fold_corner_radius * 2.,
709 layout,
710 content_origin,
711 text_bounds,
712 cx,
713 );
714 }
715 });
716
717 for (range, color) in &layout.highlighted_ranges {
718 self.paint_highlighted_range(
719 range.clone(),
720 *color,
721 Pixels::ZERO,
722 line_end_overshoot,
723 layout,
724 content_origin,
725 text_bounds,
726 cx,
727 );
728 }
729
730 let mut cursors = SmallVec::<[Cursor; 32]>::new();
731 let corner_radius = 0.15 * layout.position_map.line_height;
732 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
733
734 for (selection_style, selections) in &layout.selections {
735 for selection in selections {
736 self.paint_highlighted_range(
737 selection.range.clone(),
738 selection_style.selection,
739 corner_radius,
740 corner_radius * 2.,
741 layout,
742 content_origin,
743 text_bounds,
744 cx,
745 );
746
747 if selection.is_local && !selection.range.is_empty() {
748 invisible_display_ranges.push(selection.range.clone());
749 }
750
751 if !selection.is_local || editor.show_local_cursors(cx) {
752 let cursor_position = selection.head;
753 if layout
754 .visible_display_row_range
755 .contains(&cursor_position.row())
756 {
757 let cursor_row_layout = &layout.position_map.line_layouts
758 [(cursor_position.row() - start_row) as usize]
759 .line;
760 let cursor_column = cursor_position.column() as usize;
761
762 let cursor_character_x =
763 cursor_row_layout.x_for_index(cursor_column);
764 let mut block_width = cursor_row_layout
765 .x_for_index(cursor_column + 1)
766 - cursor_character_x;
767 if block_width == Pixels::ZERO {
768 block_width = layout.position_map.em_width;
769 }
770 let block_text = if let CursorShape::Block = selection.cursor_shape
771 {
772 layout
773 .position_map
774 .snapshot
775 .chars_at(cursor_position)
776 .next()
777 .and_then(|(character, _)| {
778 let text = SharedString::from(character.to_string());
779 let len = text.len();
780 cx.text_system()
781 .shape_line(
782 text,
783 cursor_row_layout.font_size,
784 &[TextRun {
785 len,
786 font: self.style.text.font(),
787 color: self.style.background,
788 background_color: None,
789 underline: None,
790 }],
791 )
792 .log_err()
793 })
794 } else {
795 None
796 };
797
798 let x = cursor_character_x - layout.position_map.scroll_position.x;
799 let y = cursor_position.row() as f32
800 * layout.position_map.line_height
801 - layout.position_map.scroll_position.y;
802 if selection.is_newest {
803 editor.pixel_position_of_newest_cursor = Some(point(
804 text_bounds.origin.x + x + block_width / 2.,
805 text_bounds.origin.y
806 + y
807 + layout.position_map.line_height / 2.,
808 ));
809 }
810 cursors.push(Cursor {
811 color: selection_style.cursor,
812 block_width,
813 origin: point(x, y),
814 line_height: layout.position_map.line_height,
815 shape: selection.cursor_shape,
816 block_text,
817 });
818 }
819 }
820 }
821 }
822
823 for (ix, line_with_invisibles) in
824 layout.position_map.line_layouts.iter().enumerate()
825 {
826 let row = start_row + ix as u32;
827 line_with_invisibles.draw(
828 layout,
829 row,
830 content_origin,
831 whitespace_setting,
832 &invisible_display_ranges,
833 cx,
834 )
835 }
836
837 cx.with_z_index(0, |cx| {
838 for cursor in cursors {
839 cursor.paint(content_origin, cx);
840 }
841 });
842
843 if let Some((position, mut context_menu)) = layout.context_menu.take() {
844 cx.with_z_index(1, |cx| {
845 let line_height = self.style.text.line_height_in_pixels(cx.rem_size());
846 let available_space = size(
847 AvailableSpace::MinContent,
848 AvailableSpace::Definite(
849 (12. * line_height)
850 .min((text_bounds.size.height - line_height) / 2.),
851 ),
852 );
853 let context_menu_size = context_menu.measure(available_space, cx);
854
855 let cursor_row_layout = &layout.position_map.line_layouts
856 [(position.row() - start_row) as usize]
857 .line;
858 let x = cursor_row_layout.x_for_index(position.column() as usize)
859 - layout.position_map.scroll_position.x;
860 let y = (position.row() + 1) as f32 * layout.position_map.line_height
861 - layout.position_map.scroll_position.y;
862 let mut list_origin = content_origin + point(x, y);
863 let list_width = context_menu_size.width;
864 let list_height = context_menu_size.height;
865
866 // Snap the right edge of the list to the right edge of the window if
867 // its horizontal bounds overflow.
868 if list_origin.x + list_width > cx.viewport_size().width {
869 list_origin.x =
870 (cx.viewport_size().width - list_width).max(Pixels::ZERO);
871 }
872
873 if list_origin.y + list_height > text_bounds.lower_right().y {
874 list_origin.y -= layout.position_map.line_height - list_height;
875 }
876
877 context_menu.draw(list_origin, available_space, cx);
878 })
879 }
880
881 // if let Some((position, hover_popovers)) = layout.hover_popovers.as_mut() {
882 // cx.scene().push_stacking_context(None, None);
883
884 // // This is safe because we check on layout whether the required row is available
885 // let hovered_row_layout =
886 // &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
887
888 // // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
889 // // height. This is the size we will use to decide whether to render popovers above or below
890 // // the hovered line.
891 // let first_size = hover_popovers[0].size();
892 // let height_to_reserve = first_size.y
893 // + 1.5 * MIN_POPOVER_LINE_HEIGHT as f32 * layout.position_map.line_height;
894
895 // // Compute Hovered Point
896 // let x = hovered_row_layout.x_for_index(position.column() as usize) - scroll_left;
897 // let y = position.row() as f32 * layout.position_map.line_height - scroll_top;
898 // let hovered_point = content_origin + point(x, y);
899
900 // if hovered_point.y - height_to_reserve > 0.0 {
901 // // There is enough space above. Render popovers above the hovered point
902 // let mut current_y = hovered_point.y;
903 // for hover_popover in hover_popovers {
904 // let size = hover_popover.size();
905 // let mut popover_origin = point(hovered_point.x, current_y - size.y);
906
907 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
908 // if x_out_of_bounds < 0.0 {
909 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
910 // }
911
912 // hover_popover.paint(
913 // popover_origin,
914 // Bounds::<Pixels>::from_points(
915 // gpui::Point::<Pixels>::zero(),
916 // point(f32::MAX, f32::MAX),
917 // ), // Let content bleed outside of editor
918 // editor,
919 // cx,
920 // );
921
922 // current_y = popover_origin.y - HOVER_POPOVER_GAP;
923 // }
924 // } else {
925 // // There is not enough space above. Render popovers below the hovered point
926 // let mut current_y = hovered_point.y + layout.position_map.line_height;
927 // for hover_popover in hover_popovers {
928 // let size = hover_popover.size();
929 // let mut popover_origin = point(hovered_point.x, current_y);
930
931 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
932 // if x_out_of_bounds < 0.0 {
933 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
934 // }
935
936 // hover_popover.paint(
937 // popover_origin,
938 // Bounds::<Pixels>::from_points(
939 // gpui::Point::<Pixels>::zero(),
940 // point(f32::MAX, f32::MAX),
941 // ), // Let content bleed outside of editor
942 // editor,
943 // cx,
944 // );
945
946 // current_y = popover_origin.y + size.y + HOVER_POPOVER_GAP;
947 // }
948 // }
949
950 // cx.scene().pop_stacking_context();
951 // }
952 },
953 )
954 }
955
956 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
957 bounds.upper_right().x - self.style.scrollbar_width
958 }
959
960 // fn paint_scrollbar(
961 // &mut self,
962 // bounds: Bounds<Pixels>,
963 // layout: &mut LayoutState,
964 // editor: &Editor,
965 // cx: &mut ViewContext<Editor>,
966 // ) {
967 // enum ScrollbarMouseHandlers {}
968 // if layout.mode != EditorMode::Full {
969 // return;
970 // }
971
972 // let style = &self.style.theme.scrollbar;
973
974 // let top = bounds.min_y;
975 // let bottom = bounds.max_y;
976 // let right = bounds.max_x;
977 // let left = self.scrollbar_left(&bounds);
978 // let row_range = &layout.scrollbar_row_range;
979 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
980
981 // let mut height = bounds.height();
982 // let mut first_row_y_offset = 0.0;
983
984 // // Impose a minimum height on the scrollbar thumb
985 // let row_height = height / max_row;
986 // let min_thumb_height =
987 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
988 // let thumb_height = (row_range.end - row_range.start) * row_height;
989 // if thumb_height < min_thumb_height {
990 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
991 // height -= min_thumb_height - thumb_height;
992 // }
993
994 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
995
996 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
997 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
998 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
999 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
1000
1001 // if layout.show_scrollbars {
1002 // cx.paint_quad(Quad {
1003 // bounds: track_bounds,
1004 // border: style.track.border.into(),
1005 // background: style.track.background_color,
1006 // ..Default::default()
1007 // });
1008 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
1009 // let theme = theme::current(cx);
1010 // let scrollbar_theme = &theme.editor.scrollbar;
1011 // if layout.is_singleton && scrollbar_settings.selections {
1012 // let start_anchor = Anchor::min();
1013 // let end_anchor = Anchor::max;
1014 // let color = scrollbar_theme.selections;
1015 // let border = Border {
1016 // width: 1.,
1017 // color: style.thumb.border.color,
1018 // overlay: false,
1019 // top: false,
1020 // right: true,
1021 // bottom: false,
1022 // left: true,
1023 // };
1024 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
1025 // let start_y = y_for_row(start.row() as f32);
1026 // let mut end_y = y_for_row(end.row() as f32);
1027 // if end_y - start_y < 1. {
1028 // end_y = start_y + 1.;
1029 // }
1030 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1031
1032 // cx.paint_quad(Quad {
1033 // bounds,
1034 // background: Some(color),
1035 // border: border.into(),
1036 // corner_radii: style.thumb.corner_radii.into(),
1037 // })
1038 // };
1039 // let background_ranges = editor
1040 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1041 // start_anchor..end_anchor,
1042 // &layout.position_map.snapshot,
1043 // 50000,
1044 // );
1045 // for row in background_ranges {
1046 // let start = row.start();
1047 // let end = row.end();
1048 // push_region(*start, *end);
1049 // }
1050 // }
1051
1052 // if layout.is_singleton && scrollbar_settings.git_diff {
1053 // let diff_style = scrollbar_theme.git.clone();
1054 // for hunk in layout
1055 // .position_map
1056 // .snapshot
1057 // .buffer_snapshot
1058 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1059 // {
1060 // let start_display = Point::new(hunk.buffer_range.start, 0)
1061 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1062 // let end_display = Point::new(hunk.buffer_range.end, 0)
1063 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1064 // let start_y = y_for_row(start_display.row() as f32);
1065 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1066 // y_for_row((end_display.row() + 1) as f32)
1067 // } else {
1068 // y_for_row((end_display.row()) as f32)
1069 // };
1070
1071 // if end_y - start_y < 1. {
1072 // end_y = start_y + 1.;
1073 // }
1074 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1075
1076 // let color = match hunk.status() {
1077 // DiffHunkStatus::Added => diff_style.inserted,
1078 // DiffHunkStatus::Modified => diff_style.modified,
1079 // DiffHunkStatus::Removed => diff_style.deleted,
1080 // };
1081
1082 // let border = Border {
1083 // width: 1.,
1084 // color: style.thumb.border.color,
1085 // overlay: false,
1086 // top: false,
1087 // right: true,
1088 // bottom: false,
1089 // left: true,
1090 // };
1091
1092 // cx.paint_quad(Quad {
1093 // bounds,
1094 // background: Some(color),
1095 // border: border.into(),
1096 // corner_radii: style.thumb.corner_radii.into(),
1097 // })
1098 // }
1099 // }
1100
1101 // cx.paint_quad(Quad {
1102 // bounds: thumb_bounds,
1103 // border: style.thumb.border.into(),
1104 // background: style.thumb.background_color,
1105 // corner_radii: style.thumb.corner_radii.into(),
1106 // });
1107 // }
1108
1109 // cx.scene().push_cursor_region(CursorRegion {
1110 // bounds: track_bounds,
1111 // style: CursorStyle::Arrow,
1112 // });
1113 // let region_id = cx.view_id();
1114 // cx.scene().push_mouse_region(
1115 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1116 // .on_move(move |event, editor: &mut Editor, cx| {
1117 // if event.pressed_button.is_none() {
1118 // editor.scroll_manager.show_scrollbar(cx);
1119 // }
1120 // })
1121 // .on_down(MouseButton::Left, {
1122 // let row_range = row_range.clone();
1123 // move |event, editor: &mut Editor, cx| {
1124 // let y = event.position.y;
1125 // if y < thumb_top || thumb_bottom < y {
1126 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1127 // let top_row = center_row
1128 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1129 // let mut position = editor.scroll_position(cx);
1130 // position.set_y(top_row as f32);
1131 // editor.set_scroll_position(position, cx);
1132 // } else {
1133 // editor.scroll_manager.show_scrollbar(cx);
1134 // }
1135 // }
1136 // })
1137 // .on_drag(MouseButton::Left, {
1138 // move |event, editor: &mut Editor, cx| {
1139 // if event.end {
1140 // return;
1141 // }
1142
1143 // let y = event.prev_mouse_position.y;
1144 // let new_y = event.position.y;
1145 // if thumb_top < y && y < thumb_bottom {
1146 // let mut position = editor.scroll_position(cx);
1147 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1148 // if position.y < 0.0 {
1149 // position.set_y(0.);
1150 // }
1151 // editor.set_scroll_position(position, cx);
1152 // }
1153 // }
1154 // }),
1155 // );
1156 // }
1157
1158 #[allow(clippy::too_many_arguments)]
1159 fn paint_highlighted_range(
1160 &self,
1161 range: Range<DisplayPoint>,
1162 color: Hsla,
1163 corner_radius: Pixels,
1164 line_end_overshoot: Pixels,
1165 layout: &LayoutState,
1166 content_origin: gpui::Point<Pixels>,
1167 bounds: Bounds<Pixels>,
1168 cx: &mut WindowContext,
1169 ) {
1170 let start_row = layout.visible_display_row_range.start;
1171 let end_row = layout.visible_display_row_range.end;
1172 if range.start != range.end {
1173 let row_range = if range.end.column() == 0 {
1174 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1175 } else {
1176 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1177 };
1178
1179 let highlighted_range = HighlightedRange {
1180 color,
1181 line_height: layout.position_map.line_height,
1182 corner_radius,
1183 start_y: content_origin.y
1184 + row_range.start as f32 * layout.position_map.line_height
1185 - layout.position_map.scroll_position.y,
1186 lines: row_range
1187 .into_iter()
1188 .map(|row| {
1189 let line_layout =
1190 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1191 HighlightedRangeLine {
1192 start_x: if row == range.start.row() {
1193 content_origin.x
1194 + line_layout.x_for_index(range.start.column() as usize)
1195 - layout.position_map.scroll_position.x
1196 } else {
1197 content_origin.x - layout.position_map.scroll_position.x
1198 },
1199 end_x: if row == range.end.row() {
1200 content_origin.x
1201 + line_layout.x_for_index(range.end.column() as usize)
1202 - layout.position_map.scroll_position.x
1203 } else {
1204 content_origin.x + line_layout.width + line_end_overshoot
1205 - layout.position_map.scroll_position.x
1206 },
1207 }
1208 })
1209 .collect(),
1210 };
1211
1212 highlighted_range.paint(bounds, cx);
1213 }
1214 }
1215
1216 fn paint_blocks(
1217 &mut self,
1218 bounds: Bounds<Pixels>,
1219 layout: &mut LayoutState,
1220 editor: &mut Editor,
1221 cx: &mut WindowContext,
1222 ) {
1223 let scroll_position = layout.position_map.snapshot.scroll_position();
1224 let scroll_left = scroll_position.x * layout.position_map.em_width;
1225 let scroll_top = scroll_position.y * layout.position_map.line_height;
1226
1227 for block in layout.blocks.drain(..) {
1228 let mut origin = bounds.origin
1229 + point(
1230 Pixels::ZERO,
1231 block.row as f32 * layout.position_map.line_height - scroll_top,
1232 );
1233 if !matches!(block.style, BlockStyle::Sticky) {
1234 origin += point(-scroll_left, Pixels::ZERO);
1235 }
1236 block.element.draw(origin, block.available_space, cx);
1237 }
1238 }
1239
1240 fn column_pixels(&self, column: usize, cx: &ViewContext<Editor>) -> Pixels {
1241 let style = &self.style;
1242 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1243 let layout = cx
1244 .text_system()
1245 .shape_line(
1246 SharedString::from(" ".repeat(column)),
1247 font_size,
1248 &[TextRun {
1249 len: column,
1250 font: style.text.font(),
1251 color: Hsla::default(),
1252 background_color: None,
1253 underline: None,
1254 }],
1255 )
1256 .unwrap();
1257
1258 layout.width
1259 }
1260
1261 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &ViewContext<Editor>) -> Pixels {
1262 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1263 self.column_pixels(digit_count, cx)
1264 }
1265
1266 //Folds contained in a hunk are ignored apart from shrinking visual size
1267 //If a fold contains any hunks then that fold line is marked as modified
1268 fn layout_git_gutters(
1269 &self,
1270 display_rows: Range<u32>,
1271 snapshot: &EditorSnapshot,
1272 ) -> Vec<DisplayDiffHunk> {
1273 let buffer_snapshot = &snapshot.buffer_snapshot;
1274
1275 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1276 .to_point(snapshot)
1277 .row;
1278 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1279 .to_point(snapshot)
1280 .row;
1281
1282 buffer_snapshot
1283 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1284 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1285 .dedup()
1286 .collect()
1287 }
1288
1289 fn calculate_relative_line_numbers(
1290 &self,
1291 snapshot: &EditorSnapshot,
1292 rows: &Range<u32>,
1293 relative_to: Option<u32>,
1294 ) -> HashMap<u32, u32> {
1295 let mut relative_rows: HashMap<u32, u32> = Default::default();
1296 let Some(relative_to) = relative_to else {
1297 return relative_rows;
1298 };
1299
1300 let start = rows.start.min(relative_to);
1301 let end = rows.end.max(relative_to);
1302
1303 let buffer_rows = snapshot
1304 .buffer_rows(start)
1305 .take(1 + (end - start) as usize)
1306 .collect::<Vec<_>>();
1307
1308 let head_idx = relative_to - start;
1309 let mut delta = 1;
1310 let mut i = head_idx + 1;
1311 while i < buffer_rows.len() as u32 {
1312 if buffer_rows[i as usize].is_some() {
1313 if rows.contains(&(i + start)) {
1314 relative_rows.insert(i + start, delta);
1315 }
1316 delta += 1;
1317 }
1318 i += 1;
1319 }
1320 delta = 1;
1321 i = head_idx.min(buffer_rows.len() as u32 - 1);
1322 while i > 0 && buffer_rows[i as usize].is_none() {
1323 i -= 1;
1324 }
1325
1326 while i > 0 {
1327 i -= 1;
1328 if buffer_rows[i as usize].is_some() {
1329 if rows.contains(&(i + start)) {
1330 relative_rows.insert(i + start, delta);
1331 }
1332 delta += 1;
1333 }
1334 }
1335
1336 relative_rows
1337 }
1338
1339 fn shape_line_numbers(
1340 &self,
1341 rows: Range<u32>,
1342 active_rows: &BTreeMap<u32, bool>,
1343 newest_selection_head: DisplayPoint,
1344 is_singleton: bool,
1345 snapshot: &EditorSnapshot,
1346 cx: &ViewContext<Editor>,
1347 ) -> (
1348 Vec<Option<ShapedLine>>,
1349 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1350 ) {
1351 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1352 let include_line_numbers = snapshot.mode == EditorMode::Full;
1353 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1354 let mut fold_statuses = Vec::with_capacity(rows.len());
1355 let mut line_number = String::new();
1356 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1357 let relative_to = if is_relative {
1358 Some(newest_selection_head.row())
1359 } else {
1360 None
1361 };
1362
1363 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1364
1365 for (ix, row) in snapshot
1366 .buffer_rows(rows.start)
1367 .take((rows.end - rows.start) as usize)
1368 .enumerate()
1369 {
1370 let display_row = rows.start + ix as u32;
1371 let (active, color) = if active_rows.contains_key(&display_row) {
1372 (true, cx.theme().colors().editor_active_line_number)
1373 } else {
1374 (false, cx.theme().colors().editor_line_number)
1375 };
1376 if let Some(buffer_row) = row {
1377 if include_line_numbers {
1378 line_number.clear();
1379 let default_number = buffer_row + 1;
1380 let number = relative_rows
1381 .get(&(ix as u32 + rows.start))
1382 .unwrap_or(&default_number);
1383 write!(&mut line_number, "{}", number).unwrap();
1384 let run = TextRun {
1385 len: line_number.len(),
1386 font: self.style.text.font(),
1387 color,
1388 background_color: None,
1389 underline: None,
1390 };
1391 let shaped_line = cx
1392 .text_system()
1393 .shape_line(line_number.clone().into(), font_size, &[run])
1394 .unwrap();
1395 shaped_line_numbers.push(Some(shaped_line));
1396 fold_statuses.push(
1397 is_singleton
1398 .then(|| {
1399 snapshot
1400 .fold_for_line(buffer_row)
1401 .map(|fold_status| (fold_status, buffer_row, active))
1402 })
1403 .flatten(),
1404 )
1405 }
1406 } else {
1407 fold_statuses.push(None);
1408 shaped_line_numbers.push(None);
1409 }
1410 }
1411
1412 (shaped_line_numbers, fold_statuses)
1413 }
1414
1415 fn layout_lines(
1416 &mut self,
1417 rows: Range<u32>,
1418 line_number_layouts: &[Option<ShapedLine>],
1419 snapshot: &EditorSnapshot,
1420 cx: &ViewContext<Editor>,
1421 ) -> Vec<LineWithInvisibles> {
1422 if rows.start >= rows.end {
1423 return Vec::new();
1424 }
1425
1426 // When the editor is empty and unfocused, then show the placeholder.
1427 if snapshot.is_empty() {
1428 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1429 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1430 let placeholder_text = snapshot.placeholder_text();
1431 let placeholder_lines = placeholder_text
1432 .as_ref()
1433 .map_or("", AsRef::as_ref)
1434 .split('\n')
1435 .skip(rows.start as usize)
1436 .chain(iter::repeat(""))
1437 .take(rows.len());
1438 placeholder_lines
1439 .filter_map(move |line| {
1440 let run = TextRun {
1441 len: line.len(),
1442 font: self.style.text.font(),
1443 color: placeholder_color,
1444 background_color: None,
1445 underline: Default::default(),
1446 };
1447 cx.text_system()
1448 .shape_line(line.to_string().into(), font_size, &[run])
1449 .log_err()
1450 })
1451 .map(|line| LineWithInvisibles {
1452 line,
1453 invisibles: Vec::new(),
1454 })
1455 .collect()
1456 } else {
1457 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1458 LineWithInvisibles::from_chunks(
1459 chunks,
1460 &self.style.text,
1461 MAX_LINE_LEN,
1462 rows.len() as usize,
1463 line_number_layouts,
1464 snapshot.mode,
1465 cx,
1466 )
1467 }
1468 }
1469
1470 fn compute_layout(
1471 &mut self,
1472 editor: &mut Editor,
1473 cx: &mut ViewContext<'_, Editor>,
1474 mut bounds: Bounds<Pixels>,
1475 ) -> LayoutState {
1476 // let mut size = constraint.max;
1477 // if size.x.is_infinite() {
1478 // unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
1479 // }
1480
1481 let snapshot = editor.snapshot(cx);
1482 let style = self.style.clone();
1483
1484 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1485 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1486 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1487 let em_width = cx
1488 .text_system()
1489 .typographic_bounds(font_id, font_size, 'm')
1490 .unwrap()
1491 .size
1492 .width;
1493 let em_advance = cx
1494 .text_system()
1495 .advance(font_id, font_size, 'm')
1496 .unwrap()
1497 .width;
1498
1499 let gutter_padding;
1500 let gutter_width;
1501 let gutter_margin;
1502 if snapshot.show_gutter {
1503 let descent = cx.text_system().descent(font_id, font_size).unwrap();
1504
1505 let gutter_padding_factor = 3.5;
1506 gutter_padding = (em_width * gutter_padding_factor).round();
1507 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1508 gutter_margin = -descent;
1509 } else {
1510 gutter_padding = Pixels::ZERO;
1511 gutter_width = Pixels::ZERO;
1512 gutter_margin = Pixels::ZERO;
1513 };
1514
1515 editor.gutter_width = gutter_width;
1516 let text_width = bounds.size.width - gutter_width;
1517 let overscroll = size(em_width, px(0.));
1518 let snapshot = {
1519 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1520
1521 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1522 let wrap_width = match editor.soft_wrap_mode(cx) {
1523 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1524 SoftWrap::EditorWidth => editor_width,
1525 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1526 };
1527
1528 if editor.set_wrap_width(Some(wrap_width), cx) {
1529 editor.snapshot(cx)
1530 } else {
1531 snapshot
1532 }
1533 };
1534
1535 let wrap_guides = editor
1536 .wrap_guides(cx)
1537 .iter()
1538 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1539 .collect::<SmallVec<[_; 2]>>();
1540
1541 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1542 // todo!("this should happen during layout")
1543 let editor_mode = snapshot.mode;
1544 if let EditorMode::AutoHeight { max_lines } = editor_mode {
1545 todo!()
1546 // size.set_y(
1547 // scroll_height
1548 // .min(constraint.max_along(Axis::Vertical))
1549 // .max(constraint.min_along(Axis::Vertical))
1550 // .max(line_height)
1551 // .min(line_height * max_lines as f32),
1552 // )
1553 } else if let EditorMode::SingleLine = editor_mode {
1554 bounds.size.height = line_height.min(bounds.size.height);
1555 }
1556 // todo!()
1557 // else if size.y.is_infinite() {
1558 // // size.set_y(scroll_height);
1559 // }
1560 //
1561 let gutter_size = size(gutter_width, bounds.size.height);
1562 let text_size = size(text_width, bounds.size.height);
1563
1564 let autoscroll_horizontally =
1565 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1566 let mut snapshot = editor.snapshot(cx);
1567
1568 let scroll_position = snapshot.scroll_position();
1569 // The scroll position is a fractional point, the whole number of which represents
1570 // the top of the window in terms of display rows.
1571 let start_row = scroll_position.y as u32;
1572 let height_in_lines = f32::from(bounds.size.height / line_height);
1573 let max_row = snapshot.max_point().row();
1574
1575 // Add 1 to ensure selections bleed off screen
1576 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1577
1578 let start_anchor = if start_row == 0 {
1579 Anchor::min()
1580 } else {
1581 snapshot
1582 .buffer_snapshot
1583 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1584 };
1585 let end_anchor = if end_row > max_row {
1586 Anchor::max()
1587 } else {
1588 snapshot
1589 .buffer_snapshot
1590 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1591 };
1592
1593 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1594 let mut active_rows = BTreeMap::new();
1595 let is_singleton = editor.is_singleton(cx);
1596
1597 let highlighted_rows = editor.highlighted_rows();
1598 let highlighted_ranges = editor.background_highlights_in_range(
1599 start_anchor..end_anchor,
1600 &snapshot.display_snapshot,
1601 cx.theme().colors(),
1602 );
1603
1604 let mut newest_selection_head = None;
1605
1606 if editor.show_local_selections {
1607 let mut local_selections: Vec<Selection<Point>> = editor
1608 .selections
1609 .disjoint_in_range(start_anchor..end_anchor, cx);
1610 local_selections.extend(editor.selections.pending(cx));
1611 let mut layouts = Vec::new();
1612 let newest = editor.selections.newest(cx);
1613 for selection in local_selections.drain(..) {
1614 let is_empty = selection.start == selection.end;
1615 let is_newest = selection == newest;
1616
1617 let layout = SelectionLayout::new(
1618 selection,
1619 editor.selections.line_mode,
1620 editor.cursor_shape,
1621 &snapshot.display_snapshot,
1622 is_newest,
1623 true,
1624 );
1625 if is_newest {
1626 newest_selection_head = Some(layout.head);
1627 }
1628
1629 for row in cmp::max(layout.active_rows.start, start_row)
1630 ..=cmp::min(layout.active_rows.end, end_row)
1631 {
1632 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1633 *contains_non_empty_selection |= !is_empty;
1634 }
1635 layouts.push(layout);
1636 }
1637
1638 selections.push((style.local_player, layouts));
1639 }
1640
1641 if let Some(collaboration_hub) = &editor.collaboration_hub {
1642 // When following someone, render the local selections in their color.
1643 if let Some(leader_id) = editor.leader_peer_id {
1644 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1645 if let Some(participant_index) = collaboration_hub
1646 .user_participant_indices(cx)
1647 .get(&collaborator.user_id)
1648 {
1649 if let Some((local_selection_style, _)) = selections.first_mut() {
1650 *local_selection_style = cx
1651 .theme()
1652 .players()
1653 .color_for_participant(participant_index.0);
1654 }
1655 }
1656 }
1657 }
1658
1659 let mut remote_selections = HashMap::default();
1660 for selection in snapshot.remote_selections_in_range(
1661 &(start_anchor..end_anchor),
1662 collaboration_hub.as_ref(),
1663 cx,
1664 ) {
1665 let selection_style = if let Some(participant_index) = selection.participant_index {
1666 cx.theme()
1667 .players()
1668 .color_for_participant(participant_index.0)
1669 } else {
1670 cx.theme().players().absent()
1671 };
1672
1673 // Don't re-render the leader's selections, since the local selections
1674 // match theirs.
1675 if Some(selection.peer_id) == editor.leader_peer_id {
1676 continue;
1677 }
1678
1679 remote_selections
1680 .entry(selection.replica_id)
1681 .or_insert((selection_style, Vec::new()))
1682 .1
1683 .push(SelectionLayout::new(
1684 selection.selection,
1685 selection.line_mode,
1686 selection.cursor_shape,
1687 &snapshot.display_snapshot,
1688 false,
1689 false,
1690 ));
1691 }
1692
1693 selections.extend(remote_selections.into_values());
1694 }
1695
1696 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1697 let show_scrollbars = match scrollbar_settings.show {
1698 ShowScrollbar::Auto => {
1699 // Git
1700 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1701 ||
1702 // Selections
1703 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1704 // Scrollmanager
1705 || editor.scroll_manager.scrollbars_visible()
1706 }
1707 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1708 ShowScrollbar::Always => true,
1709 ShowScrollbar::Never => false,
1710 };
1711
1712 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1713 let newest = editor.selections.newest::<Point>(cx);
1714 SelectionLayout::new(
1715 newest,
1716 editor.selections.line_mode,
1717 editor.cursor_shape,
1718 &snapshot.display_snapshot,
1719 true,
1720 true,
1721 )
1722 .head
1723 });
1724
1725 let (line_numbers, fold_statuses) = self.shape_line_numbers(
1726 start_row..end_row,
1727 &active_rows,
1728 head_for_relative,
1729 is_singleton,
1730 &snapshot,
1731 cx,
1732 );
1733
1734 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1735
1736 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1737
1738 let mut max_visible_line_width = Pixels::ZERO;
1739 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
1740 for line_with_invisibles in &line_layouts {
1741 if line_with_invisibles.line.width > max_visible_line_width {
1742 max_visible_line_width = line_with_invisibles.line.width;
1743 }
1744 }
1745
1746 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1747 .unwrap()
1748 .width;
1749 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1750
1751 let (scroll_width, blocks) = cx.with_element_id(Some("editor_blocks"), |cx| {
1752 self.layout_blocks(
1753 start_row..end_row,
1754 &snapshot,
1755 bounds.size.width,
1756 scroll_width,
1757 gutter_padding,
1758 gutter_width,
1759 em_width,
1760 gutter_width + gutter_margin,
1761 line_height,
1762 &style,
1763 &line_layouts,
1764 editor,
1765 cx,
1766 )
1767 });
1768
1769 let scroll_max = point(
1770 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1771 max_row as f32,
1772 );
1773
1774 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1775
1776 let autoscrolled = if autoscroll_horizontally {
1777 editor.autoscroll_horizontally(
1778 start_row,
1779 text_size.width,
1780 scroll_width,
1781 em_width,
1782 &line_layouts,
1783 cx,
1784 )
1785 } else {
1786 false
1787 };
1788
1789 if clamped || autoscrolled {
1790 snapshot = editor.snapshot(cx);
1791 }
1792
1793 let mut context_menu = None;
1794 let mut code_actions_indicator = None;
1795 if let Some(newest_selection_head) = newest_selection_head {
1796 if (start_row..end_row).contains(&newest_selection_head.row()) {
1797 if editor.context_menu_visible() {
1798 context_menu =
1799 editor.render_context_menu(newest_selection_head, &self.style, cx);
1800 }
1801
1802 let active = matches!(
1803 editor.context_menu.read().as_ref(),
1804 Some(crate::ContextMenu::CodeActions(_))
1805 );
1806
1807 code_actions_indicator = editor
1808 .render_code_actions_indicator(&style, active, cx)
1809 .map(|element| CodeActionsIndicator {
1810 row: newest_selection_head.row(),
1811 button: element,
1812 });
1813 }
1814 }
1815
1816 let visible_rows = start_row..start_row + line_layouts.len() as u32;
1817 // todo!("hover")
1818 // let mut hover = editor.hover_state.render(
1819 // &snapshot,
1820 // &style,
1821 // visible_rows,
1822 // editor.workspace.as_ref().map(|(w, _)| w.clone()),
1823 // cx,
1824 // );
1825 // let mode = editor.mode;
1826
1827 let mut fold_indicators = cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
1828 editor.render_fold_indicators(
1829 fold_statuses,
1830 &style,
1831 editor.gutter_hovered,
1832 line_height,
1833 gutter_margin,
1834 cx,
1835 )
1836 });
1837
1838 // todo!("context_menu")
1839 // if let Some((_, context_menu)) = context_menu.as_mut() {
1840 // context_menu.layout(
1841 // SizeConstraint {
1842 // min: gpui::Point::<Pixels>::zero(),
1843 // max: point(
1844 // cx.window_size().x * 0.7,
1845 // (12. * line_height).min((size.y - line_height) / 2.),
1846 // ),
1847 // },
1848 // editor,
1849 // cx,
1850 // );
1851 // }
1852
1853 // todo!("hover popovers")
1854 // if let Some((_, hover_popovers)) = hover.as_mut() {
1855 // for hover_popover in hover_popovers.iter_mut() {
1856 // hover_popover.layout(
1857 // SizeConstraint {
1858 // min: gpui::Point::<Pixels>::zero(),
1859 // max: point(
1860 // (120. * em_width) // Default size
1861 // .min(size.x / 2.) // Shrink to half of the editor width
1862 // .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1863 // (16. * line_height) // Default size
1864 // .min(size.y / 2.) // Shrink to half of the editor height
1865 // .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1866 // ),
1867 // },
1868 // editor,
1869 // cx,
1870 // );
1871 // }
1872 // }
1873
1874 let invisible_symbol_font_size = font_size / 2.;
1875 let tab_invisible = cx
1876 .text_system()
1877 .shape_line(
1878 "→".into(),
1879 invisible_symbol_font_size,
1880 &[TextRun {
1881 len: "→".len(),
1882 font: self.style.text.font(),
1883 color: cx.theme().colors().editor_invisible,
1884 background_color: None,
1885 underline: None,
1886 }],
1887 )
1888 .unwrap();
1889 let space_invisible = cx
1890 .text_system()
1891 .shape_line(
1892 "•".into(),
1893 invisible_symbol_font_size,
1894 &[TextRun {
1895 len: "•".len(),
1896 font: self.style.text.font(),
1897 color: cx.theme().colors().editor_invisible,
1898 background_color: None,
1899 underline: None,
1900 }],
1901 )
1902 .unwrap();
1903
1904 LayoutState {
1905 mode: editor_mode,
1906 position_map: Arc::new(PositionMap {
1907 size: bounds.size,
1908 scroll_position: point(
1909 scroll_position.x * em_width,
1910 scroll_position.y * line_height,
1911 ),
1912 scroll_max,
1913 line_layouts,
1914 line_height,
1915 em_width,
1916 em_advance,
1917 snapshot,
1918 }),
1919 visible_anchor_range: start_anchor..end_anchor,
1920 visible_display_row_range: start_row..end_row,
1921 wrap_guides,
1922 gutter_size,
1923 gutter_padding,
1924 text_size,
1925 scrollbar_row_range,
1926 show_scrollbars,
1927 is_singleton,
1928 max_row,
1929 gutter_margin,
1930 active_rows,
1931 highlighted_rows,
1932 highlighted_ranges,
1933 line_numbers,
1934 display_hunks,
1935 blocks,
1936 selections,
1937 context_menu,
1938 code_actions_indicator,
1939 fold_indicators,
1940 tab_invisible,
1941 space_invisible,
1942 // hover_popovers: hover,
1943 }
1944 }
1945
1946 #[allow(clippy::too_many_arguments)]
1947 fn layout_blocks(
1948 &mut self,
1949 rows: Range<u32>,
1950 snapshot: &EditorSnapshot,
1951 editor_width: Pixels,
1952 scroll_width: Pixels,
1953 gutter_padding: Pixels,
1954 gutter_width: Pixels,
1955 em_width: Pixels,
1956 text_x: Pixels,
1957 line_height: Pixels,
1958 style: &EditorStyle,
1959 line_layouts: &[LineWithInvisibles],
1960 editor: &mut Editor,
1961 cx: &mut ViewContext<Editor>,
1962 ) -> (Pixels, Vec<BlockLayout>) {
1963 let mut block_id = 0;
1964 let scroll_x = snapshot.scroll_anchor.offset.x;
1965 let (fixed_blocks, non_fixed_blocks) = snapshot
1966 .blocks_in_range(rows.clone())
1967 .partition::<Vec<_>, _>(|(_, block)| match block {
1968 TransformBlock::ExcerptHeader { .. } => false,
1969 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1970 });
1971
1972 let mut render_block = |block: &TransformBlock,
1973 available_space: Size<AvailableSpace>,
1974 block_id: usize,
1975 editor: &mut Editor,
1976 cx: &mut ViewContext<Editor>| {
1977 let mut element = match block {
1978 TransformBlock::Custom(block) => {
1979 let align_to = block
1980 .position()
1981 .to_point(&snapshot.buffer_snapshot)
1982 .to_display_point(snapshot);
1983 let anchor_x = text_x
1984 + if rows.contains(&align_to.row()) {
1985 line_layouts[(align_to.row() - rows.start) as usize]
1986 .line
1987 .x_for_index(align_to.column() as usize)
1988 } else {
1989 layout_line(align_to.row(), snapshot, style, cx)
1990 .unwrap()
1991 .x_for_index(align_to.column() as usize)
1992 };
1993
1994 block.render(&mut BlockContext {
1995 view_context: cx,
1996 anchor_x,
1997 gutter_padding,
1998 line_height,
1999 gutter_width,
2000 em_width,
2001 block_id,
2002 editor_style: &self.style,
2003 })
2004 }
2005
2006 TransformBlock::ExcerptHeader {
2007 buffer,
2008 range,
2009 starts_new_buffer,
2010 ..
2011 } => {
2012 let include_root = editor
2013 .project
2014 .as_ref()
2015 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2016 .unwrap_or_default();
2017 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2018 let jump_path = ProjectPath {
2019 worktree_id: file.worktree_id(cx),
2020 path: file.path.clone(),
2021 };
2022 let jump_anchor = range
2023 .primary
2024 .as_ref()
2025 .map_or(range.context.start, |primary| primary.start);
2026 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2027
2028 IconButton::new(block_id, ui::Icon::ArrowUpRight)
2029 .on_click(cx.listener_for(&self.editor, move |editor, e, cx| {
2030 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2031 }))
2032 .tooltip(|cx| Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx))
2033 });
2034
2035 let element = if *starts_new_buffer {
2036 let path = buffer.resolve_file_path(cx, include_root);
2037 let mut filename = None;
2038 let mut parent_path = None;
2039 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2040 if let Some(path) = path {
2041 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2042 parent_path = path
2043 .parent()
2044 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2045 }
2046
2047 h_stack()
2048 .id("path header block")
2049 .size_full()
2050 .bg(gpui::red())
2051 .child(
2052 filename
2053 .map(SharedString::from)
2054 .unwrap_or_else(|| "untitled".into()),
2055 )
2056 .children(parent_path)
2057 .children(jump_icon) // .p_x(gutter_padding)
2058 } else {
2059 let text_style = style.text.clone();
2060 h_stack()
2061 .id("collapsed context")
2062 .size_full()
2063 .bg(gpui::red())
2064 .child("⋯")
2065 .children(jump_icon) // .p_x(gutter_padding)
2066 };
2067 element.into_any()
2068 }
2069 };
2070
2071 let size = element.measure(available_space, cx);
2072 (element, size)
2073 };
2074
2075 let mut fixed_block_max_width = Pixels::ZERO;
2076 let mut blocks = Vec::new();
2077 for (row, block) in fixed_blocks {
2078 let available_space = size(
2079 AvailableSpace::MinContent,
2080 AvailableSpace::Definite(block.height() as f32 * line_height),
2081 );
2082 let (element, element_size) =
2083 render_block(block, available_space, block_id, editor, cx);
2084 block_id += 1;
2085 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2086 blocks.push(BlockLayout {
2087 row,
2088 element,
2089 available_space,
2090 style: BlockStyle::Fixed,
2091 });
2092 }
2093 for (row, block) in non_fixed_blocks {
2094 let style = match block {
2095 TransformBlock::Custom(block) => block.style(),
2096 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2097 };
2098 let width = match style {
2099 BlockStyle::Sticky => editor_width,
2100 BlockStyle::Flex => editor_width
2101 .max(fixed_block_max_width)
2102 .max(gutter_width + scroll_width),
2103 BlockStyle::Fixed => unreachable!(),
2104 };
2105 let available_space = size(
2106 AvailableSpace::Definite(width),
2107 AvailableSpace::Definite(block.height() as f32 * line_height),
2108 );
2109 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2110 block_id += 1;
2111 blocks.push(BlockLayout {
2112 row,
2113 element,
2114 available_space,
2115 style,
2116 });
2117 }
2118 (
2119 scroll_width.max(fixed_block_max_width - gutter_width),
2120 blocks,
2121 )
2122 }
2123
2124 fn paint_mouse_listeners(
2125 &mut self,
2126 bounds: Bounds<Pixels>,
2127 gutter_bounds: Bounds<Pixels>,
2128 text_bounds: Bounds<Pixels>,
2129 layout: &LayoutState,
2130 cx: &mut WindowContext,
2131 ) {
2132 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
2133
2134 cx.on_mouse_event({
2135 let position_map = layout.position_map.clone();
2136 let editor = self.editor.clone();
2137
2138 move |event: &ScrollWheelEvent, phase, cx| {
2139 if phase != DispatchPhase::Bubble {
2140 return;
2141 }
2142
2143 let should_cancel = editor.update(cx, |editor, cx| {
2144 Self::scroll(editor, event, &position_map, bounds, cx)
2145 });
2146 if should_cancel {
2147 cx.stop_propagation();
2148 }
2149 }
2150 });
2151
2152 cx.on_mouse_event({
2153 let position_map = layout.position_map.clone();
2154 let editor = self.editor.clone();
2155
2156 move |event: &MouseDownEvent, phase, cx| {
2157 if phase != DispatchPhase::Bubble {
2158 return;
2159 }
2160
2161 let should_cancel = editor.update(cx, |editor, cx| {
2162 Self::mouse_down(editor, event, &position_map, text_bounds, gutter_bounds, cx)
2163 });
2164
2165 if should_cancel {
2166 cx.stop_propagation()
2167 }
2168 }
2169 });
2170
2171 cx.on_mouse_event({
2172 let position_map = layout.position_map.clone();
2173 let editor = self.editor.clone();
2174 move |event: &MouseUpEvent, phase, cx| {
2175 let should_cancel = editor.update(cx, |editor, cx| {
2176 Self::mouse_up(editor, event, &position_map, text_bounds, cx)
2177 });
2178
2179 if should_cancel {
2180 cx.stop_propagation()
2181 }
2182 }
2183 });
2184 //todo!()
2185 // on_down(MouseButton::Right, {
2186 // let position_map = layout.position_map.clone();
2187 // move |event, editor, cx| {
2188 // if !Self::mouse_right_down(
2189 // editor,
2190 // event.position,
2191 // position_map.as_ref(),
2192 // text_bounds,
2193 // cx,
2194 // ) {
2195 // cx.propagate_event();
2196 // }
2197 // }
2198 // });
2199 cx.on_mouse_event({
2200 let position_map = layout.position_map.clone();
2201 let editor = self.editor.clone();
2202 move |event: &MouseMoveEvent, phase, cx| {
2203 if phase != DispatchPhase::Bubble {
2204 return;
2205 }
2206
2207 let stop_propogating = editor.update(cx, |editor, cx| {
2208 Self::mouse_moved(editor, event, &position_map, text_bounds, gutter_bounds, cx)
2209 });
2210
2211 if stop_propogating {
2212 cx.stop_propagation()
2213 }
2214 }
2215 });
2216 }
2217}
2218
2219#[derive(Debug)]
2220pub struct LineWithInvisibles {
2221 pub line: ShapedLine,
2222 invisibles: Vec<Invisible>,
2223}
2224
2225impl LineWithInvisibles {
2226 fn from_chunks<'a>(
2227 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2228 text_style: &TextStyle,
2229 max_line_len: usize,
2230 max_line_count: usize,
2231 line_number_layouts: &[Option<ShapedLine>],
2232 editor_mode: EditorMode,
2233 cx: &WindowContext,
2234 ) -> Vec<Self> {
2235 let mut layouts = Vec::with_capacity(max_line_count);
2236 let mut line = String::new();
2237 let mut invisibles = Vec::new();
2238 let mut styles = Vec::new();
2239 let mut non_whitespace_added = false;
2240 let mut row = 0;
2241 let mut line_exceeded_max_len = false;
2242 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2243
2244 for highlighted_chunk in chunks.chain([HighlightedChunk {
2245 chunk: "\n",
2246 style: None,
2247 is_tab: false,
2248 }]) {
2249 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2250 if ix > 0 {
2251 let shaped_line = cx
2252 .text_system()
2253 .shape_line(line.clone().into(), font_size, &styles)
2254 .unwrap();
2255 layouts.push(Self {
2256 line: shaped_line,
2257 invisibles: invisibles.drain(..).collect(),
2258 });
2259
2260 line.clear();
2261 styles.clear();
2262 row += 1;
2263 line_exceeded_max_len = false;
2264 non_whitespace_added = false;
2265 if row == max_line_count {
2266 return layouts;
2267 }
2268 }
2269
2270 if !line_chunk.is_empty() && !line_exceeded_max_len {
2271 let text_style = if let Some(style) = highlighted_chunk.style {
2272 Cow::Owned(text_style.clone().highlight(style))
2273 } else {
2274 Cow::Borrowed(text_style)
2275 };
2276
2277 if line.len() + line_chunk.len() > max_line_len {
2278 let mut chunk_len = max_line_len - line.len();
2279 while !line_chunk.is_char_boundary(chunk_len) {
2280 chunk_len -= 1;
2281 }
2282 line_chunk = &line_chunk[..chunk_len];
2283 line_exceeded_max_len = true;
2284 }
2285
2286 styles.push(TextRun {
2287 len: line_chunk.len(),
2288 font: text_style.font(),
2289 color: text_style.color,
2290 background_color: None,
2291 underline: text_style.underline,
2292 });
2293
2294 if editor_mode == EditorMode::Full {
2295 // Line wrap pads its contents with fake whitespaces,
2296 // avoid printing them
2297 let inside_wrapped_string = line_number_layouts
2298 .get(row)
2299 .and_then(|layout| layout.as_ref())
2300 .is_none();
2301 if highlighted_chunk.is_tab {
2302 if non_whitespace_added || !inside_wrapped_string {
2303 invisibles.push(Invisible::Tab {
2304 line_start_offset: line.len(),
2305 });
2306 }
2307 } else {
2308 invisibles.extend(
2309 line_chunk
2310 .chars()
2311 .enumerate()
2312 .filter(|(_, line_char)| {
2313 let is_whitespace = line_char.is_whitespace();
2314 non_whitespace_added |= !is_whitespace;
2315 is_whitespace
2316 && (non_whitespace_added || !inside_wrapped_string)
2317 })
2318 .map(|(whitespace_index, _)| Invisible::Whitespace {
2319 line_offset: line.len() + whitespace_index,
2320 }),
2321 )
2322 }
2323 }
2324
2325 line.push_str(line_chunk);
2326 }
2327 }
2328 }
2329
2330 layouts
2331 }
2332
2333 fn draw(
2334 &self,
2335 layout: &LayoutState,
2336 row: u32,
2337 content_origin: gpui::Point<Pixels>,
2338 whitespace_setting: ShowWhitespaceSetting,
2339 selection_ranges: &[Range<DisplayPoint>],
2340 cx: &mut WindowContext,
2341 ) {
2342 let line_height = layout.position_map.line_height;
2343 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2344
2345 self.line.paint(
2346 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2347 line_height,
2348 cx,
2349 );
2350
2351 self.draw_invisibles(
2352 &selection_ranges,
2353 layout,
2354 content_origin,
2355 line_y,
2356 row,
2357 line_height,
2358 whitespace_setting,
2359 cx,
2360 );
2361 }
2362
2363 fn draw_invisibles(
2364 &self,
2365 selection_ranges: &[Range<DisplayPoint>],
2366 layout: &LayoutState,
2367 content_origin: gpui::Point<Pixels>,
2368 line_y: Pixels,
2369 row: u32,
2370 line_height: Pixels,
2371 whitespace_setting: ShowWhitespaceSetting,
2372 cx: &mut WindowContext,
2373 ) {
2374 let allowed_invisibles_regions = match whitespace_setting {
2375 ShowWhitespaceSetting::None => return,
2376 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2377 ShowWhitespaceSetting::All => None,
2378 };
2379
2380 for invisible in &self.invisibles {
2381 let (&token_offset, invisible_symbol) = match invisible {
2382 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2383 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2384 };
2385
2386 let x_offset = self.line.x_for_index(token_offset);
2387 let invisible_offset =
2388 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2389 let origin = content_origin
2390 + gpui::point(
2391 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2392 line_y,
2393 );
2394
2395 if let Some(allowed_regions) = allowed_invisibles_regions {
2396 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2397 if !allowed_regions
2398 .iter()
2399 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2400 {
2401 continue;
2402 }
2403 }
2404 invisible_symbol.paint(origin, line_height, cx);
2405 }
2406 }
2407}
2408
2409#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2410enum Invisible {
2411 Tab { line_start_offset: usize },
2412 Whitespace { line_offset: usize },
2413}
2414
2415impl Element for EditorElement {
2416 type State = ();
2417
2418 fn layout(
2419 &mut self,
2420 element_state: Option<Self::State>,
2421 cx: &mut gpui::WindowContext,
2422 ) -> (gpui::LayoutId, Self::State) {
2423 self.editor.update(cx, |editor, cx| {
2424 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2425
2426 let rem_size = cx.rem_size();
2427 let mut style = Style::default();
2428 style.size.width = relative(1.).into();
2429 style.size.height = match editor.mode {
2430 EditorMode::SingleLine => {
2431 self.style.text.line_height_in_pixels(cx.rem_size()).into()
2432 }
2433 EditorMode::AutoHeight { .. } => todo!(),
2434 EditorMode::Full => relative(1.).into(),
2435 };
2436 let layout_id = cx.request_layout(&style, None);
2437
2438 (layout_id, ())
2439 })
2440 }
2441
2442 fn paint(
2443 mut self,
2444 bounds: Bounds<gpui::Pixels>,
2445 element_state: &mut Self::State,
2446 cx: &mut gpui::WindowContext,
2447 ) {
2448 let editor = self.editor.clone();
2449 editor.update(cx, |editor, cx| {
2450 let mut layout = self.compute_layout(editor, cx, bounds);
2451 let gutter_bounds = Bounds {
2452 origin: bounds.origin,
2453 size: layout.gutter_size,
2454 };
2455 let text_bounds = Bounds {
2456 origin: gutter_bounds.upper_right(),
2457 size: layout.text_size,
2458 };
2459
2460 let dispatch_context = editor.dispatch_context(cx);
2461 let editor_handle = cx.view().clone();
2462 cx.with_key_dispatch(
2463 dispatch_context,
2464 Some(editor.focus_handle.clone()),
2465 |_, cx| {
2466 register_actions(&editor_handle, cx);
2467
2468 // We call with_z_index to establish a new stacking context.
2469 cx.with_z_index(0, |cx| {
2470 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2471 // Paint mouse listeners first, so any elements we paint on top of the editor
2472 // take precedence.
2473 self.paint_mouse_listeners(
2474 bounds,
2475 gutter_bounds,
2476 text_bounds,
2477 &layout,
2478 cx,
2479 );
2480 let input_handler = ElementInputHandler::new(bounds, editor_handle, cx);
2481 cx.handle_input(&editor.focus_handle, input_handler);
2482
2483 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2484 if layout.gutter_size.width > Pixels::ZERO {
2485 self.paint_gutter(gutter_bounds, &mut layout, editor, cx);
2486 }
2487 self.paint_text(text_bounds, &mut layout, editor, cx);
2488
2489 if !layout.blocks.is_empty() {
2490 cx.with_element_id(Some("editor_blocks"), |cx| {
2491 self.paint_blocks(bounds, &mut layout, editor, cx);
2492 })
2493 }
2494 });
2495 });
2496 },
2497 )
2498 })
2499 }
2500}
2501
2502impl RenderOnce for EditorElement {
2503 type Element = Self;
2504
2505 fn element_id(&self) -> Option<gpui::ElementId> {
2506 self.editor.element_id()
2507 }
2508
2509 fn render_once(self) -> Self::Element {
2510 self
2511 }
2512}
2513
2514// impl EditorElement {
2515// type LayoutState = LayoutState;
2516// type PaintState = ();
2517
2518// fn layout(
2519// &mut self,
2520// constraint: SizeConstraint,
2521// editor: &mut Editor,
2522// cx: &mut ViewContext<Editor>,
2523// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2524// let mut size = constraint.max;
2525// if size.x.is_infinite() {
2526// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2527// }
2528
2529// let snapshot = editor.snapshot(cx);
2530// let style = self.style.clone();
2531
2532// let line_height = (style.text.font_size * style.line_height_scalar).round();
2533
2534// let gutter_padding;
2535// let gutter_width;
2536// let gutter_margin;
2537// if snapshot.show_gutter {
2538// let em_width = style.text.em_width(cx.font_cache());
2539// gutter_padding = (em_width * style.gutter_padding_factor).round();
2540// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2541// gutter_margin = -style.text.descent(cx.font_cache());
2542// } else {
2543// gutter_padding = 0.0;
2544// gutter_width = 0.0;
2545// gutter_margin = 0.0;
2546// };
2547
2548// let text_width = size.x - gutter_width;
2549// let em_width = style.text.em_width(cx.font_cache());
2550// let em_advance = style.text.em_advance(cx.font_cache());
2551// let overscroll = point(em_width, 0.);
2552// let snapshot = {
2553// editor.set_visible_line_count(size.y / line_height, cx);
2554
2555// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2556// let wrap_width = match editor.soft_wrap_mode(cx) {
2557// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2558// SoftWrap::EditorWidth => editor_width,
2559// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2560// };
2561
2562// if editor.set_wrap_width(Some(wrap_width), cx) {
2563// editor.snapshot(cx)
2564// } else {
2565// snapshot
2566// }
2567// };
2568
2569// let wrap_guides = editor
2570// .wrap_guides(cx)
2571// .iter()
2572// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2573// .collect();
2574
2575// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2576// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2577// size.set_y(
2578// scroll_height
2579// .min(constraint.max_along(Axis::Vertical))
2580// .max(constraint.min_along(Axis::Vertical))
2581// .max(line_height)
2582// .min(line_height * max_lines as f32),
2583// )
2584// } else if let EditorMode::SingleLine = snapshot.mode {
2585// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2586// } else if size.y.is_infinite() {
2587// size.set_y(scroll_height);
2588// }
2589// let gutter_size = point(gutter_width, size.y);
2590// let text_size = point(text_width, size.y);
2591
2592// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2593// let mut snapshot = editor.snapshot(cx);
2594
2595// let scroll_position = snapshot.scroll_position();
2596// // The scroll position is a fractional point, the whole number of which represents
2597// // the top of the window in terms of display rows.
2598// let start_row = scroll_position.y as u32;
2599// let height_in_lines = size.y / line_height;
2600// let max_row = snapshot.max_point().row();
2601
2602// // Add 1 to ensure selections bleed off screen
2603// let end_row = 1 + cmp::min(
2604// (scroll_position.y + height_in_lines).ceil() as u32,
2605// max_row,
2606// );
2607
2608// let start_anchor = if start_row == 0 {
2609// Anchor::min()
2610// } else {
2611// snapshot
2612// .buffer_snapshot
2613// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2614// };
2615// let end_anchor = if end_row > max_row {
2616// Anchor::max
2617// } else {
2618// snapshot
2619// .buffer_snapshot
2620// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2621// };
2622
2623// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2624// let mut active_rows = BTreeMap::new();
2625// let mut fold_ranges = Vec::new();
2626// let is_singleton = editor.is_singleton(cx);
2627
2628// let highlighted_rows = editor.highlighted_rows();
2629// let theme = theme::current(cx);
2630// let highlighted_ranges = editor.background_highlights_in_range(
2631// start_anchor..end_anchor,
2632// &snapshot.display_snapshot,
2633// theme.as_ref(),
2634// );
2635
2636// fold_ranges.extend(
2637// snapshot
2638// .folds_in_range(start_anchor..end_anchor)
2639// .map(|anchor| {
2640// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2641// (
2642// start.row,
2643// start.to_display_point(&snapshot.display_snapshot)
2644// ..anchor.end.to_display_point(&snapshot),
2645// )
2646// }),
2647// );
2648
2649// let mut newest_selection_head = None;
2650
2651// if editor.show_local_selections {
2652// let mut local_selections: Vec<Selection<Point>> = editor
2653// .selections
2654// .disjoint_in_range(start_anchor..end_anchor, cx);
2655// local_selections.extend(editor.selections.pending(cx));
2656// let mut layouts = Vec::new();
2657// let newest = editor.selections.newest(cx);
2658// for selection in local_selections.drain(..) {
2659// let is_empty = selection.start == selection.end;
2660// let is_newest = selection == newest;
2661
2662// let layout = SelectionLayout::new(
2663// selection,
2664// editor.selections.line_mode,
2665// editor.cursor_shape,
2666// &snapshot.display_snapshot,
2667// is_newest,
2668// true,
2669// );
2670// if is_newest {
2671// newest_selection_head = Some(layout.head);
2672// }
2673
2674// for row in cmp::max(layout.active_rows.start, start_row)
2675// ..=cmp::min(layout.active_rows.end, end_row)
2676// {
2677// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2678// *contains_non_empty_selection |= !is_empty;
2679// }
2680// layouts.push(layout);
2681// }
2682
2683// selections.push((style.selection, layouts));
2684// }
2685
2686// if let Some(collaboration_hub) = &editor.collaboration_hub {
2687// // When following someone, render the local selections in their color.
2688// if let Some(leader_id) = editor.leader_peer_id {
2689// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2690// if let Some(participant_index) = collaboration_hub
2691// .user_participant_indices(cx)
2692// .get(&collaborator.user_id)
2693// {
2694// if let Some((local_selection_style, _)) = selections.first_mut() {
2695// *local_selection_style =
2696// style.selection_style_for_room_participant(participant_index.0);
2697// }
2698// }
2699// }
2700// }
2701
2702// let mut remote_selections = HashMap::default();
2703// for selection in snapshot.remote_selections_in_range(
2704// &(start_anchor..end_anchor),
2705// collaboration_hub.as_ref(),
2706// cx,
2707// ) {
2708// let selection_style = if let Some(participant_index) = selection.participant_index {
2709// style.selection_style_for_room_participant(participant_index.0)
2710// } else {
2711// style.absent_selection
2712// };
2713
2714// // Don't re-render the leader's selections, since the local selections
2715// // match theirs.
2716// if Some(selection.peer_id) == editor.leader_peer_id {
2717// continue;
2718// }
2719
2720// remote_selections
2721// .entry(selection.replica_id)
2722// .or_insert((selection_style, Vec::new()))
2723// .1
2724// .push(SelectionLayout::new(
2725// selection.selection,
2726// selection.line_mode,
2727// selection.cursor_shape,
2728// &snapshot.display_snapshot,
2729// false,
2730// false,
2731// ));
2732// }
2733
2734// selections.extend(remote_selections.into_values());
2735// }
2736
2737// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2738// let show_scrollbars = match scrollbar_settings.show {
2739// ShowScrollbar::Auto => {
2740// // Git
2741// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2742// ||
2743// // Selections
2744// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2745// // Scrollmanager
2746// || editor.scroll_manager.scrollbars_visible()
2747// }
2748// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2749// ShowScrollbar::Always => true,
2750// ShowScrollbar::Never => false,
2751// };
2752
2753// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2754// .into_iter()
2755// .map(|(id, fold)| {
2756// let color = self
2757// .style
2758// .folds
2759// .ellipses
2760// .background
2761// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2762// .color;
2763
2764// (id, fold, color)
2765// })
2766// .collect();
2767
2768// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2769// let newest = editor.selections.newest::<Point>(cx);
2770// SelectionLayout::new(
2771// newest,
2772// editor.selections.line_mode,
2773// editor.cursor_shape,
2774// &snapshot.display_snapshot,
2775// true,
2776// true,
2777// )
2778// .head
2779// });
2780
2781// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2782// start_row..end_row,
2783// &active_rows,
2784// head_for_relative,
2785// is_singleton,
2786// &snapshot,
2787// cx,
2788// );
2789
2790// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2791
2792// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2793
2794// let mut max_visible_line_width = 0.0;
2795// let line_layouts =
2796// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2797// for line_with_invisibles in &line_layouts {
2798// if line_with_invisibles.line.width() > max_visible_line_width {
2799// max_visible_line_width = line_with_invisibles.line.width();
2800// }
2801// }
2802
2803// let style = self.style.clone();
2804// let longest_line_width = layout_line(
2805// snapshot.longest_row(),
2806// &snapshot,
2807// &style,
2808// cx.text_layout_cache(),
2809// )
2810// .width();
2811// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2812// let em_width = style.text.em_width(cx.font_cache());
2813// let (scroll_width, blocks) = self.layout_blocks(
2814// start_row..end_row,
2815// &snapshot,
2816// size.x,
2817// scroll_width,
2818// gutter_padding,
2819// gutter_width,
2820// em_width,
2821// gutter_width + gutter_margin,
2822// line_height,
2823// &style,
2824// &line_layouts,
2825// editor,
2826// cx,
2827// );
2828
2829// let scroll_max = point(
2830// ((scroll_width - text_size.x) / em_width).max(0.0),
2831// max_row as f32,
2832// );
2833
2834// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2835
2836// let autoscrolled = if autoscroll_horizontally {
2837// editor.autoscroll_horizontally(
2838// start_row,
2839// text_size.x,
2840// scroll_width,
2841// em_width,
2842// &line_layouts,
2843// cx,
2844// )
2845// } else {
2846// false
2847// };
2848
2849// if clamped || autoscrolled {
2850// snapshot = editor.snapshot(cx);
2851// }
2852
2853// let style = editor.style(cx);
2854
2855// let mut context_menu = None;
2856// let mut code_actions_indicator = None;
2857// if let Some(newest_selection_head) = newest_selection_head {
2858// if (start_row..end_row).contains(&newest_selection_head.row()) {
2859// if editor.context_menu_visible() {
2860// context_menu =
2861// editor.render_context_menu(newest_selection_head, style.clone(), cx);
2862// }
2863
2864// let active = matches!(
2865// editor.context_menu.read().as_ref(),
2866// Some(crate::ContextMenu::CodeActions(_))
2867// );
2868
2869// code_actions_indicator = editor
2870// .render_code_actions_indicator(&style, active, cx)
2871// .map(|indicator| (newest_selection_head.row(), indicator));
2872// }
2873// }
2874
2875// let visible_rows = start_row..start_row + line_layouts.len() as u32;
2876// let mut hover = editor.hover_state.render(
2877// &snapshot,
2878// &style,
2879// visible_rows,
2880// editor.workspace.as_ref().map(|(w, _)| w.clone()),
2881// cx,
2882// );
2883// let mode = editor.mode;
2884
2885// let mut fold_indicators = editor.render_fold_indicators(
2886// fold_statuses,
2887// &style,
2888// editor.gutter_hovered,
2889// line_height,
2890// gutter_margin,
2891// cx,
2892// );
2893
2894// if let Some((_, context_menu)) = context_menu.as_mut() {
2895// context_menu.layout(
2896// SizeConstraint {
2897// min: gpui::Point::<Pixels>::zero(),
2898// max: point(
2899// cx.window_size().x * 0.7,
2900// (12. * line_height).min((size.y - line_height) / 2.),
2901// ),
2902// },
2903// editor,
2904// cx,
2905// );
2906// }
2907
2908// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
2909// indicator.layout(
2910// SizeConstraint::strict_along(
2911// Axis::Vertical,
2912// line_height * style.code_actions.vertical_scale,
2913// ),
2914// editor,
2915// cx,
2916// );
2917// }
2918
2919// for fold_indicator in fold_indicators.iter_mut() {
2920// if let Some(indicator) = fold_indicator.as_mut() {
2921// indicator.layout(
2922// SizeConstraint::strict_along(
2923// Axis::Vertical,
2924// line_height * style.code_actions.vertical_scale,
2925// ),
2926// editor,
2927// cx,
2928// );
2929// }
2930// }
2931
2932// if let Some((_, hover_popovers)) = hover.as_mut() {
2933// for hover_popover in hover_popovers.iter_mut() {
2934// hover_popover.layout(
2935// SizeConstraint {
2936// min: gpui::Point::<Pixels>::zero(),
2937// max: point(
2938// (120. * em_width) // Default size
2939// .min(size.x / 2.) // Shrink to half of the editor width
2940// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2941// (16. * line_height) // Default size
2942// .min(size.y / 2.) // Shrink to half of the editor height
2943// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2944// ),
2945// },
2946// editor,
2947// cx,
2948// );
2949// }
2950// }
2951
2952// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
2953// let invisible_symbol_style = RunStyle {
2954// color: self.style.whitespace,
2955// font_id: self.style.text.font_id,
2956// underline: Default::default(),
2957// };
2958
2959// (
2960// size,
2961// LayoutState {
2962// mode,
2963// position_map: Arc::new(PositionMap {
2964// size,
2965// scroll_max,
2966// line_layouts,
2967// line_height,
2968// em_width,
2969// em_advance,
2970// snapshot,
2971// }),
2972// visible_display_row_range: start_row..end_row,
2973// wrap_guides,
2974// gutter_size,
2975// gutter_padding,
2976// text_size,
2977// scrollbar_row_range,
2978// show_scrollbars,
2979// is_singleton,
2980// max_row,
2981// gutter_margin,
2982// active_rows,
2983// highlighted_rows,
2984// highlighted_ranges,
2985// fold_ranges,
2986// line_number_layouts,
2987// display_hunks,
2988// blocks,
2989// selections,
2990// context_menu,
2991// code_actions_indicator,
2992// fold_indicators,
2993// tab_invisible: cx.text_layout_cache().layout_str(
2994// "→",
2995// invisible_symbol_font_size,
2996// &[("→".len(), invisible_symbol_style)],
2997// ),
2998// space_invisible: cx.text_layout_cache().layout_str(
2999// "•",
3000// invisible_symbol_font_size,
3001// &[("•".len(), invisible_symbol_style)],
3002// ),
3003// hover_popovers: hover,
3004// },
3005// )
3006// }
3007
3008// fn paint(
3009// &mut self,
3010// bounds: Bounds<Pixels>,
3011// visible_bounds: Bounds<Pixels>,
3012// layout: &mut Self::LayoutState,
3013// editor: &mut Editor,
3014// cx: &mut ViewContext<Editor>,
3015// ) -> Self::PaintState {
3016// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
3017// cx.scene().push_layer(Some(visible_bounds));
3018
3019// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
3020// let text_bounds = Bounds::<Pixels>::new(
3021// bounds.origin + point(layout.gutter_size.x, 0.0),
3022// layout.text_size,
3023// );
3024
3025// Self::attach_mouse_handlers(
3026// &layout.position_map,
3027// layout.hover_popovers.is_some(),
3028// visible_bounds,
3029// text_bounds,
3030// gutter_bounds,
3031// bounds,
3032// cx,
3033// );
3034
3035// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3036// if layout.gutter_size.x > 0. {
3037// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3038// }
3039// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3040
3041// cx.scene().push_layer(Some(bounds));
3042// if !layout.blocks.is_empty {
3043// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3044// }
3045// self.paint_scrollbar(bounds, layout, &editor, cx);
3046// cx.scene().pop_layer();
3047// cx.scene().pop_layer();
3048// }
3049
3050// fn rect_for_text_range(
3051// &self,
3052// range_utf16: Range<usize>,
3053// bounds: Bounds<Pixels>,
3054// _: Bounds<Pixels>,
3055// layout: &Self::LayoutState,
3056// _: &Self::PaintState,
3057// _: &Editor,
3058// _: &ViewContext<Editor>,
3059// ) -> Option<Bounds<Pixels>> {
3060// let text_bounds = Bounds::<Pixels>::new(
3061// bounds.origin + point(layout.gutter_size.x, 0.0),
3062// layout.text_size,
3063// );
3064// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3065// let scroll_position = layout.position_map.snapshot.scroll_position();
3066// let start_row = scroll_position.y as u32;
3067// let scroll_top = scroll_position.y * layout.position_map.line_height;
3068// let scroll_left = scroll_position.x * layout.position_map.em_width;
3069
3070// let range_start = OffsetUtf16(range_utf16.start)
3071// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3072// if range_start.row() < start_row {
3073// return None;
3074// }
3075
3076// let line = &layout
3077// .position_map
3078// .line_layouts
3079// .get((range_start.row() - start_row) as usize)?
3080// .line;
3081// let range_start_x = line.x_for_index(range_start.column() as usize);
3082// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3083// Some(Bounds::<Pixels>::new(
3084// content_origin
3085// + point(
3086// range_start_x,
3087// range_start_y + layout.position_map.line_height,
3088// )
3089// - point(scroll_left, scroll_top),
3090// point(
3091// layout.position_map.em_width,
3092// layout.position_map.line_height,
3093// ),
3094// ))
3095// }
3096
3097// fn debug(
3098// &self,
3099// bounds: Bounds<Pixels>,
3100// _: &Self::LayoutState,
3101// _: &Self::PaintState,
3102// _: &Editor,
3103// _: &ViewContext<Editor>,
3104// ) -> json::Value {
3105// json!({
3106// "type": "BufferElement",
3107// "bounds": bounds.to_json()
3108// })
3109// }
3110// }
3111
3112type BufferRow = u32;
3113
3114pub struct LayoutState {
3115 position_map: Arc<PositionMap>,
3116 gutter_size: Size<Pixels>,
3117 gutter_padding: Pixels,
3118 gutter_margin: Pixels,
3119 text_size: gpui::Size<Pixels>,
3120 mode: EditorMode,
3121 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3122 visible_anchor_range: Range<Anchor>,
3123 visible_display_row_range: Range<u32>,
3124 active_rows: BTreeMap<u32, bool>,
3125 highlighted_rows: Option<Range<u32>>,
3126 line_numbers: Vec<Option<ShapedLine>>,
3127 display_hunks: Vec<DisplayDiffHunk>,
3128 blocks: Vec<BlockLayout>,
3129 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3130 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3131 scrollbar_row_range: Range<f32>,
3132 show_scrollbars: bool,
3133 is_singleton: bool,
3134 max_row: u32,
3135 context_menu: Option<(DisplayPoint, AnyElement)>,
3136 code_actions_indicator: Option<CodeActionsIndicator>,
3137 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3138 fold_indicators: Vec<Option<IconButton>>,
3139 tab_invisible: ShapedLine,
3140 space_invisible: ShapedLine,
3141}
3142
3143struct CodeActionsIndicator {
3144 row: u32,
3145 button: IconButton,
3146}
3147
3148struct PositionMap {
3149 size: Size<Pixels>,
3150 line_height: Pixels,
3151 scroll_position: gpui::Point<Pixels>,
3152 scroll_max: gpui::Point<f32>,
3153 em_width: Pixels,
3154 em_advance: Pixels,
3155 line_layouts: Vec<LineWithInvisibles>,
3156 snapshot: EditorSnapshot,
3157}
3158
3159#[derive(Debug, Copy, Clone)]
3160pub struct PointForPosition {
3161 pub previous_valid: DisplayPoint,
3162 pub next_valid: DisplayPoint,
3163 pub exact_unclipped: DisplayPoint,
3164 pub column_overshoot_after_line_end: u32,
3165}
3166
3167impl PointForPosition {
3168 #[cfg(test)]
3169 pub fn valid(valid: DisplayPoint) -> Self {
3170 Self {
3171 previous_valid: valid,
3172 next_valid: valid,
3173 exact_unclipped: valid,
3174 column_overshoot_after_line_end: 0,
3175 }
3176 }
3177
3178 pub fn as_valid(&self) -> Option<DisplayPoint> {
3179 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3180 Some(self.previous_valid)
3181 } else {
3182 None
3183 }
3184 }
3185}
3186
3187impl PositionMap {
3188 fn point_for_position(
3189 &self,
3190 text_bounds: Bounds<Pixels>,
3191 position: gpui::Point<Pixels>,
3192 ) -> PointForPosition {
3193 let scroll_position = self.snapshot.scroll_position();
3194 let position = position - text_bounds.origin;
3195 let y = position.y.max(px(0.)).min(self.size.width);
3196 let x = position.x + (scroll_position.x * self.em_width);
3197 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3198
3199 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3200 .line_layouts
3201 .get(row as usize - scroll_position.y as usize)
3202 .map(|&LineWithInvisibles { ref line, .. }| line)
3203 {
3204 if let Some(ix) = line.index_for_x(x) {
3205 (ix as u32, px(0.))
3206 } else {
3207 (line.len as u32, px(0.).max(x - line.width))
3208 }
3209 } else {
3210 (0, x)
3211 };
3212
3213 let mut exact_unclipped = DisplayPoint::new(row, column);
3214 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3215 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3216
3217 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3218 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3219 PointForPosition {
3220 previous_valid,
3221 next_valid,
3222 exact_unclipped,
3223 column_overshoot_after_line_end,
3224 }
3225 }
3226}
3227
3228struct BlockLayout {
3229 row: u32,
3230 element: AnyElement,
3231 available_space: Size<AvailableSpace>,
3232 style: BlockStyle,
3233}
3234
3235fn layout_line(
3236 row: u32,
3237 snapshot: &EditorSnapshot,
3238 style: &EditorStyle,
3239 cx: &WindowContext,
3240) -> Result<ShapedLine> {
3241 let mut line = snapshot.line(row);
3242
3243 if line.len() > MAX_LINE_LEN {
3244 let mut len = MAX_LINE_LEN;
3245 while !line.is_char_boundary(len) {
3246 len -= 1;
3247 }
3248
3249 line.truncate(len);
3250 }
3251
3252 cx.text_system().shape_line(
3253 line.into(),
3254 style.text.font_size.to_pixels(cx.rem_size()),
3255 &[TextRun {
3256 len: snapshot.line_len(row) as usize,
3257 font: style.text.font(),
3258 color: Hsla::default(),
3259 background_color: None,
3260 underline: None,
3261 }],
3262 )
3263}
3264
3265#[derive(Debug)]
3266pub struct Cursor {
3267 origin: gpui::Point<Pixels>,
3268 block_width: Pixels,
3269 line_height: Pixels,
3270 color: Hsla,
3271 shape: CursorShape,
3272 block_text: Option<ShapedLine>,
3273}
3274
3275impl Cursor {
3276 pub fn new(
3277 origin: gpui::Point<Pixels>,
3278 block_width: Pixels,
3279 line_height: Pixels,
3280 color: Hsla,
3281 shape: CursorShape,
3282 block_text: Option<ShapedLine>,
3283 ) -> Cursor {
3284 Cursor {
3285 origin,
3286 block_width,
3287 line_height,
3288 color,
3289 shape,
3290 block_text,
3291 }
3292 }
3293
3294 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3295 Bounds {
3296 origin: self.origin + origin,
3297 size: size(self.block_width, self.line_height),
3298 }
3299 }
3300
3301 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3302 let bounds = match self.shape {
3303 CursorShape::Bar => Bounds {
3304 origin: self.origin + origin,
3305 size: size(px(2.0), self.line_height),
3306 },
3307 CursorShape::Block | CursorShape::Hollow => Bounds {
3308 origin: self.origin + origin,
3309 size: size(self.block_width, self.line_height),
3310 },
3311 CursorShape::Underscore => Bounds {
3312 origin: self.origin
3313 + origin
3314 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3315 size: size(self.block_width, px(2.0)),
3316 },
3317 };
3318
3319 //Draw background or border quad
3320 if matches!(self.shape, CursorShape::Hollow) {
3321 cx.paint_quad(
3322 bounds,
3323 Corners::default(),
3324 transparent_black(),
3325 Edges::all(px(1.)),
3326 self.color,
3327 );
3328 } else {
3329 cx.paint_quad(
3330 bounds,
3331 Corners::default(),
3332 self.color,
3333 Edges::default(),
3334 transparent_black(),
3335 );
3336 }
3337
3338 if let Some(block_text) = &self.block_text {
3339 block_text.paint(self.origin + origin, self.line_height, cx);
3340 }
3341 }
3342
3343 pub fn shape(&self) -> CursorShape {
3344 self.shape
3345 }
3346}
3347
3348#[derive(Debug)]
3349pub struct HighlightedRange {
3350 pub start_y: Pixels,
3351 pub line_height: Pixels,
3352 pub lines: Vec<HighlightedRangeLine>,
3353 pub color: Hsla,
3354 pub corner_radius: Pixels,
3355}
3356
3357#[derive(Debug)]
3358pub struct HighlightedRangeLine {
3359 pub start_x: Pixels,
3360 pub end_x: Pixels,
3361}
3362
3363impl HighlightedRange {
3364 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3365 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3366 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3367 self.paint_lines(
3368 self.start_y + self.line_height,
3369 &self.lines[1..],
3370 bounds,
3371 cx,
3372 );
3373 } else {
3374 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3375 }
3376 }
3377
3378 fn paint_lines(
3379 &self,
3380 start_y: Pixels,
3381 lines: &[HighlightedRangeLine],
3382 bounds: Bounds<Pixels>,
3383 cx: &mut WindowContext,
3384 ) {
3385 if lines.is_empty() {
3386 return;
3387 }
3388
3389 let first_line = lines.first().unwrap();
3390 let last_line = lines.last().unwrap();
3391
3392 let first_top_left = point(first_line.start_x, start_y);
3393 let first_top_right = point(first_line.end_x, start_y);
3394
3395 let curve_height = point(Pixels::ZERO, self.corner_radius);
3396 let curve_width = |start_x: Pixels, end_x: Pixels| {
3397 let max = (end_x - start_x) / 2.;
3398 let width = if max < self.corner_radius {
3399 max
3400 } else {
3401 self.corner_radius
3402 };
3403
3404 point(width, Pixels::ZERO)
3405 };
3406
3407 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3408 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3409 path.curve_to(first_top_right + curve_height, first_top_right);
3410
3411 let mut iter = lines.iter().enumerate().peekable();
3412 while let Some((ix, line)) = iter.next() {
3413 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3414
3415 if let Some((_, next_line)) = iter.peek() {
3416 let next_top_right = point(next_line.end_x, bottom_right.y);
3417
3418 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3419 Ordering::Equal => {
3420 path.line_to(bottom_right);
3421 }
3422 Ordering::Less => {
3423 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3424 path.line_to(bottom_right - curve_height);
3425 if self.corner_radius > Pixels::ZERO {
3426 path.curve_to(bottom_right - curve_width, bottom_right);
3427 }
3428 path.line_to(next_top_right + curve_width);
3429 if self.corner_radius > Pixels::ZERO {
3430 path.curve_to(next_top_right + curve_height, next_top_right);
3431 }
3432 }
3433 Ordering::Greater => {
3434 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3435 path.line_to(bottom_right - curve_height);
3436 if self.corner_radius > Pixels::ZERO {
3437 path.curve_to(bottom_right + curve_width, bottom_right);
3438 }
3439 path.line_to(next_top_right - curve_width);
3440 if self.corner_radius > Pixels::ZERO {
3441 path.curve_to(next_top_right + curve_height, next_top_right);
3442 }
3443 }
3444 }
3445 } else {
3446 let curve_width = curve_width(line.start_x, line.end_x);
3447 path.line_to(bottom_right - curve_height);
3448 if self.corner_radius > Pixels::ZERO {
3449 path.curve_to(bottom_right - curve_width, bottom_right);
3450 }
3451
3452 let bottom_left = point(line.start_x, bottom_right.y);
3453 path.line_to(bottom_left + curve_width);
3454 if self.corner_radius > Pixels::ZERO {
3455 path.curve_to(bottom_left - curve_height, bottom_left);
3456 }
3457 }
3458 }
3459
3460 if first_line.start_x > last_line.start_x {
3461 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3462 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3463 path.line_to(second_top_left + curve_height);
3464 if self.corner_radius > Pixels::ZERO {
3465 path.curve_to(second_top_left + curve_width, second_top_left);
3466 }
3467 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3468 path.line_to(first_bottom_left - curve_width);
3469 if self.corner_radius > Pixels::ZERO {
3470 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3471 }
3472 }
3473
3474 path.line_to(first_top_left + curve_height);
3475 if self.corner_radius > Pixels::ZERO {
3476 path.curve_to(first_top_left + top_curve_width, first_top_left);
3477 }
3478 path.line_to(first_top_right - top_curve_width);
3479
3480 cx.paint_path(path, self.color);
3481 }
3482}
3483
3484pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3485 (delta.pow(1.5) / 100.0).into()
3486}
3487
3488fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3489 (delta.pow(1.2) / 300.0).into()
3490}
3491
3492// #[cfg(test)]
3493// mod tests {
3494// use super::*;
3495// use crate::{
3496// display_map::{BlockDisposition, BlockProperties},
3497// editor_tests::{init_test, update_test_language_settings},
3498// Editor, MultiBuffer,
3499// };
3500// use gpui::TestAppContext;
3501// use language::language_settings;
3502// use log::info;
3503// use std::{num::NonZeroU32, sync::Arc};
3504// use util::test::sample_text;
3505
3506// #[gpui::test]
3507// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3508// init_test(cx, |_| {});
3509// let editor = cx
3510// .add_window(|cx| {
3511// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3512// Editor::new(EditorMode::Full, buffer, None, None, cx)
3513// })
3514// .root(cx);
3515// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3516
3517// let layouts = editor.update(cx, |editor, cx| {
3518// let snapshot = editor.snapshot(cx);
3519// element
3520// .layout_line_numbers(
3521// 0..6,
3522// &Default::default(),
3523// DisplayPoint::new(0, 0),
3524// false,
3525// &snapshot,
3526// cx,
3527// )
3528// .0
3529// });
3530// assert_eq!(layouts.len(), 6);
3531
3532// let relative_rows = editor.update(cx, |editor, cx| {
3533// let snapshot = editor.snapshot(cx);
3534// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3535// });
3536// assert_eq!(relative_rows[&0], 3);
3537// assert_eq!(relative_rows[&1], 2);
3538// assert_eq!(relative_rows[&2], 1);
3539// // current line has no relative number
3540// assert_eq!(relative_rows[&4], 1);
3541// assert_eq!(relative_rows[&5], 2);
3542
3543// // works if cursor is before screen
3544// let relative_rows = editor.update(cx, |editor, cx| {
3545// let snapshot = editor.snapshot(cx);
3546
3547// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3548// });
3549// assert_eq!(relative_rows.len(), 3);
3550// assert_eq!(relative_rows[&3], 2);
3551// assert_eq!(relative_rows[&4], 3);
3552// assert_eq!(relative_rows[&5], 4);
3553
3554// // works if cursor is after screen
3555// let relative_rows = editor.update(cx, |editor, cx| {
3556// let snapshot = editor.snapshot(cx);
3557
3558// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3559// });
3560// assert_eq!(relative_rows.len(), 3);
3561// assert_eq!(relative_rows[&0], 5);
3562// assert_eq!(relative_rows[&1], 4);
3563// assert_eq!(relative_rows[&2], 3);
3564// }
3565
3566// #[gpui::test]
3567// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3568// init_test(cx, |_| {});
3569
3570// let editor = cx
3571// .add_window(|cx| {
3572// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3573// Editor::new(EditorMode::Full, buffer, None, None, cx)
3574// })
3575// .root(cx);
3576// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3577// let (_, state) = editor.update(cx, |editor, cx| {
3578// editor.cursor_shape = CursorShape::Block;
3579// editor.change_selections(None, cx, |s| {
3580// s.select_ranges([
3581// Point::new(0, 0)..Point::new(1, 0),
3582// Point::new(3, 2)..Point::new(3, 3),
3583// Point::new(5, 6)..Point::new(6, 0),
3584// ]);
3585// });
3586// element.layout(
3587// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3588// editor,
3589// cx,
3590// )
3591// });
3592// assert_eq!(state.selections.len(), 1);
3593// let local_selections = &state.selections[0].1;
3594// assert_eq!(local_selections.len(), 3);
3595// // moves cursor back one line
3596// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3597// assert_eq!(
3598// local_selections[0].range,
3599// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3600// );
3601
3602// // moves cursor back one column
3603// assert_eq!(
3604// local_selections[1].range,
3605// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3606// );
3607// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3608
3609// // leaves cursor on the max point
3610// assert_eq!(
3611// local_selections[2].range,
3612// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3613// );
3614// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3615
3616// // active lines does not include 1 (even though the range of the selection does)
3617// assert_eq!(
3618// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3619// vec![0, 3, 5, 6]
3620// );
3621
3622// // multi-buffer support
3623// // in DisplayPoint co-ordinates, this is what we're dealing with:
3624// // 0: [[file
3625// // 1: header]]
3626// // 2: aaaaaa
3627// // 3: bbbbbb
3628// // 4: cccccc
3629// // 5:
3630// // 6: ...
3631// // 7: ffffff
3632// // 8: gggggg
3633// // 9: hhhhhh
3634// // 10:
3635// // 11: [[file
3636// // 12: header]]
3637// // 13: bbbbbb
3638// // 14: cccccc
3639// // 15: dddddd
3640// let editor = cx
3641// .add_window(|cx| {
3642// let buffer = MultiBuffer::build_multi(
3643// [
3644// (
3645// &(sample_text(8, 6, 'a') + "\n"),
3646// vec![
3647// Point::new(0, 0)..Point::new(3, 0),
3648// Point::new(4, 0)..Point::new(7, 0),
3649// ],
3650// ),
3651// (
3652// &(sample_text(8, 6, 'a') + "\n"),
3653// vec![Point::new(1, 0)..Point::new(3, 0)],
3654// ),
3655// ],
3656// cx,
3657// );
3658// Editor::new(EditorMode::Full, buffer, None, None, cx)
3659// })
3660// .root(cx);
3661// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3662// let (_, state) = editor.update(cx, |editor, cx| {
3663// editor.cursor_shape = CursorShape::Block;
3664// editor.change_selections(None, cx, |s| {
3665// s.select_display_ranges([
3666// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3667// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3668// ]);
3669// });
3670// element.layout(
3671// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3672// editor,
3673// cx,
3674// )
3675// });
3676
3677// assert_eq!(state.selections.len(), 1);
3678// let local_selections = &state.selections[0].1;
3679// assert_eq!(local_selections.len(), 2);
3680
3681// // moves cursor on excerpt boundary back a line
3682// // and doesn't allow selection to bleed through
3683// assert_eq!(
3684// local_selections[0].range,
3685// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3686// );
3687// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3688
3689// // moves cursor on buffer boundary back two lines
3690// // and doesn't allow selection to bleed through
3691// assert_eq!(
3692// local_selections[1].range,
3693// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3694// );
3695// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3696// }
3697
3698// #[gpui::test]
3699// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3700// init_test(cx, |_| {});
3701
3702// let editor = cx
3703// .add_window(|cx| {
3704// let buffer = MultiBuffer::build_simple("", cx);
3705// Editor::new(EditorMode::Full, buffer, None, None, cx)
3706// })
3707// .root(cx);
3708
3709// editor.update(cx, |editor, cx| {
3710// editor.set_placeholder_text("hello", cx);
3711// editor.insert_blocks(
3712// [BlockProperties {
3713// style: BlockStyle::Fixed,
3714// disposition: BlockDisposition::Above,
3715// height: 3,
3716// position: Anchor::min(),
3717// render: Arc::new(|_| Empty::new().into_any),
3718// }],
3719// None,
3720// cx,
3721// );
3722
3723// // Blur the editor so that it displays placeholder text.
3724// cx.blur();
3725// });
3726
3727// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3728// let (size, mut state) = editor.update(cx, |editor, cx| {
3729// element.layout(
3730// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3731// editor,
3732// cx,
3733// )
3734// });
3735
3736// assert_eq!(state.position_map.line_layouts.len(), 4);
3737// assert_eq!(
3738// state
3739// .line_number_layouts
3740// .iter()
3741// .map(Option::is_some)
3742// .collect::<Vec<_>>(),
3743// &[false, false, false, true]
3744// );
3745
3746// // Don't panic.
3747// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3748// editor.update(cx, |editor, cx| {
3749// element.paint(bounds, bounds, &mut state, editor, cx);
3750// });
3751// }
3752
3753// #[gpui::test]
3754// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3755// const TAB_SIZE: u32 = 4;
3756
3757// let input_text = "\t \t|\t| a b";
3758// let expected_invisibles = vec![
3759// Invisible::Tab {
3760// line_start_offset: 0,
3761// },
3762// Invisible::Whitespace {
3763// line_offset: TAB_SIZE as usize,
3764// },
3765// Invisible::Tab {
3766// line_start_offset: TAB_SIZE as usize + 1,
3767// },
3768// Invisible::Tab {
3769// line_start_offset: TAB_SIZE as usize * 2 + 1,
3770// },
3771// Invisible::Whitespace {
3772// line_offset: TAB_SIZE as usize * 3 + 1,
3773// },
3774// Invisible::Whitespace {
3775// line_offset: TAB_SIZE as usize * 3 + 3,
3776// },
3777// ];
3778// assert_eq!(
3779// expected_invisibles.len(),
3780// input_text
3781// .chars()
3782// .filter(|initial_char| initial_char.is_whitespace())
3783// .count(),
3784// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3785// );
3786
3787// init_test(cx, |s| {
3788// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3789// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3790// });
3791
3792// let actual_invisibles =
3793// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3794
3795// assert_eq!(expected_invisibles, actual_invisibles);
3796// }
3797
3798// #[gpui::test]
3799// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3800// init_test(cx, |s| {
3801// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3802// s.defaults.tab_size = NonZeroU32::new(4);
3803// });
3804
3805// for editor_mode_without_invisibles in [
3806// EditorMode::SingleLine,
3807// EditorMode::AutoHeight { max_lines: 100 },
3808// ] {
3809// let invisibles = collect_invisibles_from_new_editor(
3810// cx,
3811// editor_mode_without_invisibles,
3812// "\t\t\t| | a b",
3813// 500.0,
3814// );
3815// assert!(invisibles.is_empty,
3816// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3817// }
3818// }
3819
3820// #[gpui::test]
3821// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3822// let tab_size = 4;
3823// let input_text = "a\tbcd ".repeat(9);
3824// let repeated_invisibles = [
3825// Invisible::Tab {
3826// line_start_offset: 1,
3827// },
3828// Invisible::Whitespace {
3829// line_offset: tab_size as usize + 3,
3830// },
3831// Invisible::Whitespace {
3832// line_offset: tab_size as usize + 4,
3833// },
3834// Invisible::Whitespace {
3835// line_offset: tab_size as usize + 5,
3836// },
3837// ];
3838// let expected_invisibles = std::iter::once(repeated_invisibles)
3839// .cycle()
3840// .take(9)
3841// .flatten()
3842// .collect::<Vec<_>>();
3843// assert_eq!(
3844// expected_invisibles.len(),
3845// input_text
3846// .chars()
3847// .filter(|initial_char| initial_char.is_whitespace())
3848// .count(),
3849// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3850// );
3851// info!("Expected invisibles: {expected_invisibles:?}");
3852
3853// init_test(cx, |_| {});
3854
3855// // Put the same string with repeating whitespace pattern into editors of various size,
3856// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3857// let resize_step = 10.0;
3858// let mut editor_width = 200.0;
3859// while editor_width <= 1000.0 {
3860// update_test_language_settings(cx, |s| {
3861// s.defaults.tab_size = NonZeroU32::new(tab_size);
3862// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3863// s.defaults.preferred_line_length = Some(editor_width as u32);
3864// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3865// });
3866
3867// let actual_invisibles =
3868// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
3869
3870// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3871// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3872// let mut i = 0;
3873// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3874// i = actual_index;
3875// match expected_invisibles.get(i) {
3876// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3877// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3878// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3879// _ => {
3880// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3881// }
3882// },
3883// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3884// }
3885// }
3886// let missing_expected_invisibles = &expected_invisibles[i + 1..];
3887// assert!(
3888// missing_expected_invisibles.is_empty,
3889// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3890// );
3891
3892// editor_width += resize_step;
3893// }
3894// }
3895
3896// fn collect_invisibles_from_new_editor(
3897// cx: &mut TestAppContext,
3898// editor_mode: EditorMode,
3899// input_text: &str,
3900// editor_width: f32,
3901// ) -> Vec<Invisible> {
3902// info!(
3903// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
3904// );
3905// let editor = cx
3906// .add_window(|cx| {
3907// let buffer = MultiBuffer::build_simple(&input_text, cx);
3908// Editor::new(editor_mode, buffer, None, None, cx)
3909// })
3910// .root(cx);
3911
3912// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3913// let (_, layout_state) = editor.update(cx, |editor, cx| {
3914// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3915// editor.set_wrap_width(Some(editor_width), cx);
3916
3917// element.layout(
3918// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
3919// editor,
3920// cx,
3921// )
3922// });
3923
3924// layout_state
3925// .position_map
3926// .line_layouts
3927// .iter()
3928// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3929// .flatten()
3930// .cloned()
3931// .collect()
3932// }
3933// }
3934
3935fn register_actions(view: &View<Editor>, cx: &mut WindowContext) {
3936 register_action(view, cx, Editor::move_left);
3937 register_action(view, cx, Editor::move_right);
3938 register_action(view, cx, Editor::move_down);
3939 register_action(view, cx, Editor::move_up);
3940 // on_action(cx, Editor::new_file); todo!()
3941 // on_action(cx, Editor::new_file_in_direction); todo!()
3942 register_action(view, cx, Editor::cancel);
3943 register_action(view, cx, Editor::newline);
3944 register_action(view, cx, Editor::newline_above);
3945 register_action(view, cx, Editor::newline_below);
3946 register_action(view, cx, Editor::backspace);
3947 register_action(view, cx, Editor::delete);
3948 register_action(view, cx, Editor::tab);
3949 register_action(view, cx, Editor::tab_prev);
3950 register_action(view, cx, Editor::indent);
3951 register_action(view, cx, Editor::outdent);
3952 register_action(view, cx, Editor::delete_line);
3953 register_action(view, cx, Editor::join_lines);
3954 register_action(view, cx, Editor::sort_lines_case_sensitive);
3955 register_action(view, cx, Editor::sort_lines_case_insensitive);
3956 register_action(view, cx, Editor::reverse_lines);
3957 register_action(view, cx, Editor::shuffle_lines);
3958 register_action(view, cx, Editor::convert_to_upper_case);
3959 register_action(view, cx, Editor::convert_to_lower_case);
3960 register_action(view, cx, Editor::convert_to_title_case);
3961 register_action(view, cx, Editor::convert_to_snake_case);
3962 register_action(view, cx, Editor::convert_to_kebab_case);
3963 register_action(view, cx, Editor::convert_to_upper_camel_case);
3964 register_action(view, cx, Editor::convert_to_lower_camel_case);
3965 register_action(view, cx, Editor::delete_to_previous_word_start);
3966 register_action(view, cx, Editor::delete_to_previous_subword_start);
3967 register_action(view, cx, Editor::delete_to_next_word_end);
3968 register_action(view, cx, Editor::delete_to_next_subword_end);
3969 register_action(view, cx, Editor::delete_to_beginning_of_line);
3970 register_action(view, cx, Editor::delete_to_end_of_line);
3971 register_action(view, cx, Editor::cut_to_end_of_line);
3972 register_action(view, cx, Editor::duplicate_line);
3973 register_action(view, cx, Editor::move_line_up);
3974 register_action(view, cx, Editor::move_line_down);
3975 register_action(view, cx, Editor::transpose);
3976 register_action(view, cx, Editor::cut);
3977 register_action(view, cx, Editor::copy);
3978 register_action(view, cx, Editor::paste);
3979 register_action(view, cx, Editor::undo);
3980 register_action(view, cx, Editor::redo);
3981 register_action(view, cx, Editor::move_page_up);
3982 register_action(view, cx, Editor::move_page_down);
3983 register_action(view, cx, Editor::next_screen);
3984 register_action(view, cx, Editor::scroll_cursor_top);
3985 register_action(view, cx, Editor::scroll_cursor_center);
3986 register_action(view, cx, Editor::scroll_cursor_bottom);
3987 register_action(view, cx, |editor, _: &LineDown, cx| {
3988 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
3989 });
3990 register_action(view, cx, |editor, _: &LineUp, cx| {
3991 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
3992 });
3993 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
3994 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
3995 });
3996 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
3997 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
3998 });
3999 register_action(view, cx, |editor, _: &PageDown, cx| {
4000 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
4001 });
4002 register_action(view, cx, |editor, _: &PageUp, cx| {
4003 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
4004 });
4005 register_action(view, cx, Editor::move_to_previous_word_start);
4006 register_action(view, cx, Editor::move_to_previous_subword_start);
4007 register_action(view, cx, Editor::move_to_next_word_end);
4008 register_action(view, cx, Editor::move_to_next_subword_end);
4009 register_action(view, cx, Editor::move_to_beginning_of_line);
4010 register_action(view, cx, Editor::move_to_end_of_line);
4011 register_action(view, cx, Editor::move_to_start_of_paragraph);
4012 register_action(view, cx, Editor::move_to_end_of_paragraph);
4013 register_action(view, cx, Editor::move_to_beginning);
4014 register_action(view, cx, Editor::move_to_end);
4015 register_action(view, cx, Editor::select_up);
4016 register_action(view, cx, Editor::select_down);
4017 register_action(view, cx, Editor::select_left);
4018 register_action(view, cx, Editor::select_right);
4019 register_action(view, cx, Editor::select_to_previous_word_start);
4020 register_action(view, cx, Editor::select_to_previous_subword_start);
4021 register_action(view, cx, Editor::select_to_next_word_end);
4022 register_action(view, cx, Editor::select_to_next_subword_end);
4023 register_action(view, cx, Editor::select_to_beginning_of_line);
4024 register_action(view, cx, Editor::select_to_end_of_line);
4025 register_action(view, cx, Editor::select_to_start_of_paragraph);
4026 register_action(view, cx, Editor::select_to_end_of_paragraph);
4027 register_action(view, cx, Editor::select_to_beginning);
4028 register_action(view, cx, Editor::select_to_end);
4029 register_action(view, cx, Editor::select_all);
4030 register_action(view, cx, |editor, action, cx| {
4031 editor.select_all_matches(action, cx).log_err();
4032 });
4033 register_action(view, cx, Editor::select_line);
4034 register_action(view, cx, Editor::split_selection_into_lines);
4035 register_action(view, cx, Editor::add_selection_above);
4036 register_action(view, cx, Editor::add_selection_below);
4037 register_action(view, cx, |editor, action, cx| {
4038 editor.select_next(action, cx).log_err();
4039 });
4040 register_action(view, cx, |editor, action, cx| {
4041 editor.select_previous(action, cx).log_err();
4042 });
4043 register_action(view, cx, Editor::toggle_comments);
4044 register_action(view, cx, Editor::select_larger_syntax_node);
4045 register_action(view, cx, Editor::select_smaller_syntax_node);
4046 register_action(view, cx, Editor::move_to_enclosing_bracket);
4047 register_action(view, cx, Editor::undo_selection);
4048 register_action(view, cx, Editor::redo_selection);
4049 register_action(view, cx, Editor::go_to_diagnostic);
4050 register_action(view, cx, Editor::go_to_prev_diagnostic);
4051 register_action(view, cx, Editor::go_to_hunk);
4052 register_action(view, cx, Editor::go_to_prev_hunk);
4053 register_action(view, cx, Editor::go_to_definition);
4054 register_action(view, cx, Editor::go_to_definition_split);
4055 register_action(view, cx, Editor::go_to_type_definition);
4056 register_action(view, cx, Editor::go_to_type_definition_split);
4057 register_action(view, cx, Editor::fold);
4058 register_action(view, cx, Editor::fold_at);
4059 register_action(view, cx, Editor::unfold_lines);
4060 register_action(view, cx, Editor::unfold_at);
4061 register_action(view, cx, Editor::fold_selected_ranges);
4062 register_action(view, cx, Editor::show_completions);
4063 register_action(view, cx, Editor::toggle_code_actions);
4064 // on_action(cx, Editor::open_excerpts); todo!()
4065 register_action(view, cx, Editor::toggle_soft_wrap);
4066 register_action(view, cx, Editor::toggle_inlay_hints);
4067 register_action(view, cx, Editor::reveal_in_finder);
4068 register_action(view, cx, Editor::copy_path);
4069 register_action(view, cx, Editor::copy_relative_path);
4070 register_action(view, cx, Editor::copy_highlight_json);
4071 register_action(view, cx, |editor, action, cx| {
4072 editor
4073 .format(action, cx)
4074 .map(|task| task.detach_and_log_err(cx));
4075 });
4076 register_action(view, cx, Editor::restart_language_server);
4077 register_action(view, cx, Editor::show_character_palette);
4078 // on_action(cx, Editor::confirm_completion); todo!()
4079 register_action(view, cx, |editor, action, cx| {
4080 editor
4081 .confirm_code_action(action, cx)
4082 .map(|task| task.detach_and_log_err(cx));
4083 });
4084 register_action(view, cx, |editor, action, cx| {
4085 editor
4086 .rename(action, cx)
4087 .map(|task| task.detach_and_log_err(cx));
4088 });
4089 register_action(view, cx, |editor, action, cx| {
4090 editor
4091 .confirm_rename(action, cx)
4092 .map(|task| task.detach_and_log_err(cx));
4093 });
4094 register_action(view, cx, |editor, action, cx| {
4095 editor
4096 .find_all_references(action, cx)
4097 .map(|task| task.detach_and_log_err(cx));
4098 });
4099 register_action(view, cx, Editor::next_copilot_suggestion);
4100 register_action(view, cx, Editor::previous_copilot_suggestion);
4101 register_action(view, cx, Editor::copilot_suggest);
4102 register_action(view, cx, Editor::context_menu_first);
4103 register_action(view, cx, Editor::context_menu_prev);
4104 register_action(view, cx, Editor::context_menu_next);
4105 register_action(view, cx, Editor::context_menu_last);
4106}
4107
4108fn register_action<T: Action>(
4109 view: &View<Editor>,
4110 cx: &mut WindowContext,
4111 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4112) {
4113 let view = view.clone();
4114 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4115 let action = action.downcast_ref().unwrap();
4116 if phase == DispatchPhase::Bubble {
4117 view.update(cx, |editor, cx| {
4118 listener(editor, action, cx);
4119 })
4120 }
4121 })
4122}