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