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, PageDown, PageUp, Point, SelectPhase,
16 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};
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 let mut render_block = |block: &TransformBlock,
1974 available_space: Size<AvailableSpace>,
1975 block_id: usize,
1976 editor: &mut Editor,
1977 cx: &mut ViewContext<Editor>| {
1978 let mut element = match block {
1979 TransformBlock::Custom(block) => {
1980 let align_to = block
1981 .position()
1982 .to_point(&snapshot.buffer_snapshot)
1983 .to_display_point(snapshot);
1984 let anchor_x = text_x
1985 + if rows.contains(&align_to.row()) {
1986 line_layouts[(align_to.row() - rows.start) as usize]
1987 .line
1988 .x_for_index(align_to.column() as usize)
1989 } else {
1990 layout_line(align_to.row(), snapshot, style, cx)
1991 .unwrap()
1992 .x_for_index(align_to.column() as usize)
1993 };
1994
1995 block.render(&mut BlockContext {
1996 view_context: cx,
1997 anchor_x,
1998 gutter_padding,
1999 line_height,
2000 gutter_width,
2001 em_width,
2002 block_id,
2003 editor_style: &self.style,
2004 })
2005 }
2006 TransformBlock::ExcerptHeader {
2007 buffer,
2008 range,
2009 starts_new_buffer,
2010 ..
2011 } => {
2012 let include_root = editor
2013 .project
2014 .as_ref()
2015 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2016 .unwrap_or_default();
2017 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2018 let jump_path = ProjectPath {
2019 worktree_id: file.worktree_id(cx),
2020 path: file.path.clone(),
2021 };
2022 let jump_anchor = range
2023 .primary
2024 .as_ref()
2025 .map_or(range.context.start, |primary| primary.start);
2026 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2027
2028 IconButton::new(block_id, ui::Icon::ArrowUpRight)
2029 .on_click(move |editor: &mut Editor, cx| {
2030 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2031 })
2032 .tooltip("Jump to Buffer") // todo!(pass an action as well to show key binding)
2033 });
2034
2035 let element = if *starts_new_buffer {
2036 let path = buffer.resolve_file_path(cx, include_root);
2037 let mut filename = None;
2038 let mut parent_path = None;
2039 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2040 if let Some(path) = path {
2041 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2042 parent_path =
2043 path.parent().map(|p| p.to_string_lossy().to_string() + "/");
2044 }
2045
2046 h_stack()
2047 .size_full()
2048 .bg(gpui::red())
2049 .child(filename.unwrap_or_else(|| "untitled".to_string()))
2050 .children(parent_path)
2051 .children(jump_icon) // .p_x(gutter_padding)
2052 } else {
2053 let text_style = style.text.clone();
2054 h_stack()
2055 .size_full()
2056 .bg(gpui::red())
2057 .child("⋯")
2058 .children(jump_icon) // .p_x(gutter_padding)
2059 };
2060 element.render()
2061 }
2062 };
2063
2064 let size = element.measure(available_space, editor, cx);
2065 (element, size)
2066 };
2067
2068 let mut fixed_block_max_width = Pixels::ZERO;
2069 let mut blocks = Vec::new();
2070 for (row, block) in fixed_blocks {
2071 let available_space = size(
2072 AvailableSpace::MinContent,
2073 AvailableSpace::Definite(block.height() as f32 * line_height),
2074 );
2075 let (element, element_size) =
2076 render_block(block, available_space, block_id, editor, cx);
2077 block_id += 1;
2078 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2079 blocks.push(BlockLayout {
2080 row,
2081 element,
2082 available_space,
2083 style: BlockStyle::Fixed,
2084 });
2085 }
2086 for (row, block) in non_fixed_blocks {
2087 let style = match block {
2088 TransformBlock::Custom(block) => block.style(),
2089 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2090 };
2091 let width = match style {
2092 BlockStyle::Sticky => editor_width,
2093 BlockStyle::Flex => editor_width
2094 .max(fixed_block_max_width)
2095 .max(gutter_width + scroll_width),
2096 BlockStyle::Fixed => unreachable!(),
2097 };
2098 let available_space = size(
2099 AvailableSpace::Definite(width),
2100 AvailableSpace::Definite(block.height() as f32 * line_height),
2101 );
2102 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2103 block_id += 1;
2104 blocks.push(BlockLayout {
2105 row,
2106 element,
2107 available_space,
2108 style,
2109 });
2110 }
2111 (
2112 scroll_width.max(fixed_block_max_width - gutter_width),
2113 blocks,
2114 )
2115 }
2116
2117 fn paint_mouse_listeners(
2118 &mut self,
2119 bounds: Bounds<Pixels>,
2120 gutter_bounds: Bounds<Pixels>,
2121 text_bounds: Bounds<Pixels>,
2122 layout: &LayoutState,
2123 cx: &mut ViewContext<Editor>,
2124 ) {
2125 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
2126
2127 cx.on_mouse_event({
2128 let position_map = layout.position_map.clone();
2129 move |editor, event: &ScrollWheelEvent, phase, cx| {
2130 if phase != DispatchPhase::Bubble {
2131 return;
2132 }
2133
2134 if Self::scroll(editor, event, &position_map, bounds, cx) {
2135 cx.stop_propagation();
2136 }
2137 }
2138 });
2139 cx.on_mouse_event({
2140 let position_map = layout.position_map.clone();
2141 move |editor, event: &MouseDownEvent, phase, cx| {
2142 if phase != DispatchPhase::Bubble {
2143 return;
2144 }
2145
2146 if Self::mouse_down(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2147 cx.stop_propagation()
2148 }
2149 }
2150 });
2151 cx.on_mouse_event({
2152 let position_map = layout.position_map.clone();
2153 move |editor, event: &MouseUpEvent, phase, cx| {
2154 if phase != DispatchPhase::Bubble {
2155 return;
2156 }
2157
2158 if Self::mouse_up(editor, event, &position_map, text_bounds, cx) {
2159 cx.stop_propagation()
2160 }
2161 }
2162 });
2163 // todo!()
2164 // on_down(MouseButton::Right, {
2165 // let position_map = layout.position_map.clone();
2166 // move |event, editor, cx| {
2167 // if !Self::mouse_right_down(
2168 // editor,
2169 // event.position,
2170 // position_map.as_ref(),
2171 // text_bounds,
2172 // cx,
2173 // ) {
2174 // cx.propagate_event();
2175 // }
2176 // }
2177 // });
2178 cx.on_mouse_event({
2179 let position_map = layout.position_map.clone();
2180 move |editor, event: &MouseMoveEvent, phase, cx| {
2181 if phase != DispatchPhase::Bubble {
2182 return;
2183 }
2184
2185 if Self::mouse_moved(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2186 cx.stop_propagation()
2187 }
2188 }
2189 });
2190 }
2191}
2192
2193#[derive(Debug)]
2194pub struct LineWithInvisibles {
2195 pub line: ShapedLine,
2196 invisibles: Vec<Invisible>,
2197}
2198
2199impl LineWithInvisibles {
2200 fn from_chunks<'a>(
2201 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2202 text_style: &TextStyle,
2203 max_line_len: usize,
2204 max_line_count: usize,
2205 line_number_layouts: &[Option<ShapedLine>],
2206 editor_mode: EditorMode,
2207 cx: &WindowContext,
2208 ) -> Vec<Self> {
2209 let mut layouts = Vec::with_capacity(max_line_count);
2210 let mut line = String::new();
2211 let mut invisibles = Vec::new();
2212 let mut styles = Vec::new();
2213 let mut non_whitespace_added = false;
2214 let mut row = 0;
2215 let mut line_exceeded_max_len = false;
2216 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2217
2218 for highlighted_chunk in chunks.chain([HighlightedChunk {
2219 chunk: "\n",
2220 style: None,
2221 is_tab: false,
2222 }]) {
2223 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2224 if ix > 0 {
2225 let shaped_line = cx
2226 .text_system()
2227 .shape_line(line.clone().into(), font_size, &styles)
2228 .unwrap();
2229 layouts.push(Self {
2230 line: shaped_line,
2231 invisibles: invisibles.drain(..).collect(),
2232 });
2233
2234 line.clear();
2235 styles.clear();
2236 row += 1;
2237 line_exceeded_max_len = false;
2238 non_whitespace_added = false;
2239 if row == max_line_count {
2240 return layouts;
2241 }
2242 }
2243
2244 if !line_chunk.is_empty() && !line_exceeded_max_len {
2245 let text_style = if let Some(style) = highlighted_chunk.style {
2246 Cow::Owned(text_style.clone().highlight(style))
2247 } else {
2248 Cow::Borrowed(text_style)
2249 };
2250
2251 if line.len() + line_chunk.len() > max_line_len {
2252 let mut chunk_len = max_line_len - line.len();
2253 while !line_chunk.is_char_boundary(chunk_len) {
2254 chunk_len -= 1;
2255 }
2256 line_chunk = &line_chunk[..chunk_len];
2257 line_exceeded_max_len = true;
2258 }
2259
2260 styles.push(TextRun {
2261 len: line_chunk.len(),
2262 font: text_style.font(),
2263 color: text_style.color,
2264 background_color: None,
2265 underline: text_style.underline,
2266 });
2267
2268 if editor_mode == EditorMode::Full {
2269 // Line wrap pads its contents with fake whitespaces,
2270 // avoid printing them
2271 let inside_wrapped_string = line_number_layouts
2272 .get(row)
2273 .and_then(|layout| layout.as_ref())
2274 .is_none();
2275 if highlighted_chunk.is_tab {
2276 if non_whitespace_added || !inside_wrapped_string {
2277 invisibles.push(Invisible::Tab {
2278 line_start_offset: line.len(),
2279 });
2280 }
2281 } else {
2282 invisibles.extend(
2283 line_chunk
2284 .chars()
2285 .enumerate()
2286 .filter(|(_, line_char)| {
2287 let is_whitespace = line_char.is_whitespace();
2288 non_whitespace_added |= !is_whitespace;
2289 is_whitespace
2290 && (non_whitespace_added || !inside_wrapped_string)
2291 })
2292 .map(|(whitespace_index, _)| Invisible::Whitespace {
2293 line_offset: line.len() + whitespace_index,
2294 }),
2295 )
2296 }
2297 }
2298
2299 line.push_str(line_chunk);
2300 }
2301 }
2302 }
2303
2304 layouts
2305 }
2306
2307 fn draw(
2308 &self,
2309 layout: &LayoutState,
2310 row: u32,
2311 content_origin: gpui::Point<Pixels>,
2312 whitespace_setting: ShowWhitespaceSetting,
2313 selection_ranges: &[Range<DisplayPoint>],
2314 cx: &mut ViewContext<Editor>,
2315 ) {
2316 let line_height = layout.position_map.line_height;
2317 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2318
2319 self.line.paint(
2320 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2321 line_height,
2322 cx,
2323 );
2324
2325 self.draw_invisibles(
2326 &selection_ranges,
2327 layout,
2328 content_origin,
2329 line_y,
2330 row,
2331 line_height,
2332 whitespace_setting,
2333 cx,
2334 );
2335 }
2336
2337 fn draw_invisibles(
2338 &self,
2339 selection_ranges: &[Range<DisplayPoint>],
2340 layout: &LayoutState,
2341 content_origin: gpui::Point<Pixels>,
2342 line_y: Pixels,
2343 row: u32,
2344 line_height: Pixels,
2345 whitespace_setting: ShowWhitespaceSetting,
2346 cx: &mut ViewContext<Editor>,
2347 ) {
2348 let allowed_invisibles_regions = match whitespace_setting {
2349 ShowWhitespaceSetting::None => return,
2350 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2351 ShowWhitespaceSetting::All => None,
2352 };
2353
2354 for invisible in &self.invisibles {
2355 let (&token_offset, invisible_symbol) = match invisible {
2356 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2357 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2358 };
2359
2360 let x_offset = self.line.x_for_index(token_offset);
2361 let invisible_offset =
2362 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2363 let origin = content_origin
2364 + gpui::point(
2365 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2366 line_y,
2367 );
2368
2369 if let Some(allowed_regions) = allowed_invisibles_regions {
2370 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2371 if !allowed_regions
2372 .iter()
2373 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2374 {
2375 continue;
2376 }
2377 }
2378 invisible_symbol.paint(origin, line_height, cx);
2379 }
2380 }
2381}
2382
2383#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2384enum Invisible {
2385 Tab { line_start_offset: usize },
2386 Whitespace { line_offset: usize },
2387}
2388
2389impl Element<Editor> for EditorElement {
2390 type ElementState = ();
2391
2392 fn element_id(&self) -> Option<gpui::ElementId> {
2393 Some(self.editor_id.into())
2394 }
2395
2396 fn layout(
2397 &mut self,
2398 editor: &mut Editor,
2399 element_state: Option<Self::ElementState>,
2400 cx: &mut gpui::ViewContext<Editor>,
2401 ) -> (gpui::LayoutId, Self::ElementState) {
2402 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2403
2404 let rem_size = cx.rem_size();
2405 let mut style = Style::default();
2406 style.size.width = relative(1.).into();
2407 style.size.height = match editor.mode {
2408 EditorMode::SingleLine => self.style.text.line_height_in_pixels(cx.rem_size()).into(),
2409 EditorMode::AutoHeight { .. } => todo!(),
2410 EditorMode::Full => relative(1.).into(),
2411 };
2412 let layout_id = cx.request_layout(&style, None);
2413 (layout_id, ())
2414 }
2415
2416 fn paint(
2417 &mut self,
2418 bounds: Bounds<gpui::Pixels>,
2419 editor: &mut Editor,
2420 element_state: &mut Self::ElementState,
2421 cx: &mut gpui::ViewContext<Editor>,
2422 ) {
2423 let mut layout = self.compute_layout(editor, cx, bounds);
2424 let gutter_bounds = Bounds {
2425 origin: bounds.origin,
2426 size: layout.gutter_size,
2427 };
2428 let text_bounds = Bounds {
2429 origin: gutter_bounds.upper_right(),
2430 size: layout.text_size,
2431 };
2432
2433 let dispatch_context = editor.dispatch_context(cx);
2434 cx.with_key_dispatch(
2435 dispatch_context,
2436 Some(editor.focus_handle.clone()),
2437 |_, cx| {
2438 register_actions(cx);
2439
2440 // We call with_z_index to establish a new stacking context.
2441 cx.with_z_index(0, |cx| {
2442 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2443 // Paint mouse listeners first, so any elements we paint on top of the editor
2444 // take precedence.
2445 self.paint_mouse_listeners(bounds, gutter_bounds, text_bounds, &layout, cx);
2446 let input_handler = ElementInputHandler::new(bounds, cx);
2447 cx.handle_input(&editor.focus_handle, input_handler);
2448
2449 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2450 if layout.gutter_size.width > Pixels::ZERO {
2451 self.paint_gutter(gutter_bounds, &mut layout, editor, cx);
2452 }
2453 self.paint_text(text_bounds, &mut layout, editor, cx);
2454
2455 if !layout.blocks.is_empty() {
2456 cx.with_element_id(Some("editor_blocks"), |cx| {
2457 self.paint_blocks(bounds, &mut layout, editor, cx);
2458 })
2459 }
2460 });
2461 });
2462 },
2463 )
2464 }
2465}
2466
2467impl Component<Editor> for EditorElement {
2468 fn render(self) -> AnyElement<Editor> {
2469 AnyElement::new(self)
2470 }
2471}
2472
2473// impl EditorElement {
2474// type LayoutState = LayoutState;
2475// type PaintState = ();
2476
2477// fn layout(
2478// &mut self,
2479// constraint: SizeConstraint,
2480// editor: &mut Editor,
2481// cx: &mut ViewContext<Editor>,
2482// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2483// let mut size = constraint.max;
2484// if size.x.is_infinite() {
2485// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2486// }
2487
2488// let snapshot = editor.snapshot(cx);
2489// let style = self.style.clone();
2490
2491// let line_height = (style.text.font_size * style.line_height_scalar).round();
2492
2493// let gutter_padding;
2494// let gutter_width;
2495// let gutter_margin;
2496// if snapshot.show_gutter {
2497// let em_width = style.text.em_width(cx.font_cache());
2498// gutter_padding = (em_width * style.gutter_padding_factor).round();
2499// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2500// gutter_margin = -style.text.descent(cx.font_cache());
2501// } else {
2502// gutter_padding = 0.0;
2503// gutter_width = 0.0;
2504// gutter_margin = 0.0;
2505// };
2506
2507// let text_width = size.x - gutter_width;
2508// let em_width = style.text.em_width(cx.font_cache());
2509// let em_advance = style.text.em_advance(cx.font_cache());
2510// let overscroll = point(em_width, 0.);
2511// let snapshot = {
2512// editor.set_visible_line_count(size.y / line_height, cx);
2513
2514// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2515// let wrap_width = match editor.soft_wrap_mode(cx) {
2516// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2517// SoftWrap::EditorWidth => editor_width,
2518// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2519// };
2520
2521// if editor.set_wrap_width(Some(wrap_width), cx) {
2522// editor.snapshot(cx)
2523// } else {
2524// snapshot
2525// }
2526// };
2527
2528// let wrap_guides = editor
2529// .wrap_guides(cx)
2530// .iter()
2531// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2532// .collect();
2533
2534// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2535// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2536// size.set_y(
2537// scroll_height
2538// .min(constraint.max_along(Axis::Vertical))
2539// .max(constraint.min_along(Axis::Vertical))
2540// .max(line_height)
2541// .min(line_height * max_lines as f32),
2542// )
2543// } else if let EditorMode::SingleLine = snapshot.mode {
2544// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2545// } else if size.y.is_infinite() {
2546// size.set_y(scroll_height);
2547// }
2548// let gutter_size = point(gutter_width, size.y);
2549// let text_size = point(text_width, size.y);
2550
2551// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2552// let mut snapshot = editor.snapshot(cx);
2553
2554// let scroll_position = snapshot.scroll_position();
2555// // The scroll position is a fractional point, the whole number of which represents
2556// // the top of the window in terms of display rows.
2557// let start_row = scroll_position.y as u32;
2558// let height_in_lines = size.y / line_height;
2559// let max_row = snapshot.max_point().row();
2560
2561// // Add 1 to ensure selections bleed off screen
2562// let end_row = 1 + cmp::min(
2563// (scroll_position.y + height_in_lines).ceil() as u32,
2564// max_row,
2565// );
2566
2567// let start_anchor = if start_row == 0 {
2568// Anchor::min()
2569// } else {
2570// snapshot
2571// .buffer_snapshot
2572// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2573// };
2574// let end_anchor = if end_row > max_row {
2575// Anchor::max
2576// } else {
2577// snapshot
2578// .buffer_snapshot
2579// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2580// };
2581
2582// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2583// let mut active_rows = BTreeMap::new();
2584// let mut fold_ranges = Vec::new();
2585// let is_singleton = editor.is_singleton(cx);
2586
2587// let highlighted_rows = editor.highlighted_rows();
2588// let theme = theme::current(cx);
2589// let highlighted_ranges = editor.background_highlights_in_range(
2590// start_anchor..end_anchor,
2591// &snapshot.display_snapshot,
2592// theme.as_ref(),
2593// );
2594
2595// fold_ranges.extend(
2596// snapshot
2597// .folds_in_range(start_anchor..end_anchor)
2598// .map(|anchor| {
2599// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2600// (
2601// start.row,
2602// start.to_display_point(&snapshot.display_snapshot)
2603// ..anchor.end.to_display_point(&snapshot),
2604// )
2605// }),
2606// );
2607
2608// let mut newest_selection_head = None;
2609
2610// if editor.show_local_selections {
2611// let mut local_selections: Vec<Selection<Point>> = editor
2612// .selections
2613// .disjoint_in_range(start_anchor..end_anchor, cx);
2614// local_selections.extend(editor.selections.pending(cx));
2615// let mut layouts = Vec::new();
2616// let newest = editor.selections.newest(cx);
2617// for selection in local_selections.drain(..) {
2618// let is_empty = selection.start == selection.end;
2619// let is_newest = selection == newest;
2620
2621// let layout = SelectionLayout::new(
2622// selection,
2623// editor.selections.line_mode,
2624// editor.cursor_shape,
2625// &snapshot.display_snapshot,
2626// is_newest,
2627// true,
2628// );
2629// if is_newest {
2630// newest_selection_head = Some(layout.head);
2631// }
2632
2633// for row in cmp::max(layout.active_rows.start, start_row)
2634// ..=cmp::min(layout.active_rows.end, end_row)
2635// {
2636// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2637// *contains_non_empty_selection |= !is_empty;
2638// }
2639// layouts.push(layout);
2640// }
2641
2642// selections.push((style.selection, layouts));
2643// }
2644
2645// if let Some(collaboration_hub) = &editor.collaboration_hub {
2646// // When following someone, render the local selections in their color.
2647// if let Some(leader_id) = editor.leader_peer_id {
2648// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2649// if let Some(participant_index) = collaboration_hub
2650// .user_participant_indices(cx)
2651// .get(&collaborator.user_id)
2652// {
2653// if let Some((local_selection_style, _)) = selections.first_mut() {
2654// *local_selection_style =
2655// style.selection_style_for_room_participant(participant_index.0);
2656// }
2657// }
2658// }
2659// }
2660
2661// let mut remote_selections = HashMap::default();
2662// for selection in snapshot.remote_selections_in_range(
2663// &(start_anchor..end_anchor),
2664// collaboration_hub.as_ref(),
2665// cx,
2666// ) {
2667// let selection_style = if let Some(participant_index) = selection.participant_index {
2668// style.selection_style_for_room_participant(participant_index.0)
2669// } else {
2670// style.absent_selection
2671// };
2672
2673// // Don't re-render the leader's selections, since the local selections
2674// // match theirs.
2675// if Some(selection.peer_id) == editor.leader_peer_id {
2676// continue;
2677// }
2678
2679// remote_selections
2680// .entry(selection.replica_id)
2681// .or_insert((selection_style, Vec::new()))
2682// .1
2683// .push(SelectionLayout::new(
2684// selection.selection,
2685// selection.line_mode,
2686// selection.cursor_shape,
2687// &snapshot.display_snapshot,
2688// false,
2689// false,
2690// ));
2691// }
2692
2693// selections.extend(remote_selections.into_values());
2694// }
2695
2696// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2697// let show_scrollbars = match scrollbar_settings.show {
2698// ShowScrollbar::Auto => {
2699// // Git
2700// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2701// ||
2702// // Selections
2703// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2704// // Scrollmanager
2705// || editor.scroll_manager.scrollbars_visible()
2706// }
2707// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2708// ShowScrollbar::Always => true,
2709// ShowScrollbar::Never => false,
2710// };
2711
2712// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2713// .into_iter()
2714// .map(|(id, fold)| {
2715// let color = self
2716// .style
2717// .folds
2718// .ellipses
2719// .background
2720// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2721// .color;
2722
2723// (id, fold, color)
2724// })
2725// .collect();
2726
2727// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2728// let newest = editor.selections.newest::<Point>(cx);
2729// SelectionLayout::new(
2730// newest,
2731// editor.selections.line_mode,
2732// editor.cursor_shape,
2733// &snapshot.display_snapshot,
2734// true,
2735// true,
2736// )
2737// .head
2738// });
2739
2740// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2741// start_row..end_row,
2742// &active_rows,
2743// head_for_relative,
2744// is_singleton,
2745// &snapshot,
2746// cx,
2747// );
2748
2749// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2750
2751// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2752
2753// let mut max_visible_line_width = 0.0;
2754// let line_layouts =
2755// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2756// for line_with_invisibles in &line_layouts {
2757// if line_with_invisibles.line.width() > max_visible_line_width {
2758// max_visible_line_width = line_with_invisibles.line.width();
2759// }
2760// }
2761
2762// let style = self.style.clone();
2763// let longest_line_width = layout_line(
2764// snapshot.longest_row(),
2765// &snapshot,
2766// &style,
2767// cx.text_layout_cache(),
2768// )
2769// .width();
2770// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2771// let em_width = style.text.em_width(cx.font_cache());
2772// let (scroll_width, blocks) = self.layout_blocks(
2773// start_row..end_row,
2774// &snapshot,
2775// size.x,
2776// scroll_width,
2777// gutter_padding,
2778// gutter_width,
2779// em_width,
2780// gutter_width + gutter_margin,
2781// line_height,
2782// &style,
2783// &line_layouts,
2784// editor,
2785// cx,
2786// );
2787
2788// let scroll_max = point(
2789// ((scroll_width - text_size.x) / em_width).max(0.0),
2790// max_row as f32,
2791// );
2792
2793// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2794
2795// let autoscrolled = if autoscroll_horizontally {
2796// editor.autoscroll_horizontally(
2797// start_row,
2798// text_size.x,
2799// scroll_width,
2800// em_width,
2801// &line_layouts,
2802// cx,
2803// )
2804// } else {
2805// false
2806// };
2807
2808// if clamped || autoscrolled {
2809// snapshot = editor.snapshot(cx);
2810// }
2811
2812// let style = editor.style(cx);
2813
2814// let mut context_menu = None;
2815// let mut code_actions_indicator = None;
2816// if let Some(newest_selection_head) = newest_selection_head {
2817// if (start_row..end_row).contains(&newest_selection_head.row()) {
2818// if editor.context_menu_visible() {
2819// context_menu =
2820// editor.render_context_menu(newest_selection_head, style.clone(), cx);
2821// }
2822
2823// let active = matches!(
2824// editor.context_menu.read().as_ref(),
2825// Some(crate::ContextMenu::CodeActions(_))
2826// );
2827
2828// code_actions_indicator = editor
2829// .render_code_actions_indicator(&style, active, cx)
2830// .map(|indicator| (newest_selection_head.row(), indicator));
2831// }
2832// }
2833
2834// let visible_rows = start_row..start_row + line_layouts.len() as u32;
2835// let mut hover = editor.hover_state.render(
2836// &snapshot,
2837// &style,
2838// visible_rows,
2839// editor.workspace.as_ref().map(|(w, _)| w.clone()),
2840// cx,
2841// );
2842// let mode = editor.mode;
2843
2844// let mut fold_indicators = editor.render_fold_indicators(
2845// fold_statuses,
2846// &style,
2847// editor.gutter_hovered,
2848// line_height,
2849// gutter_margin,
2850// cx,
2851// );
2852
2853// if let Some((_, context_menu)) = context_menu.as_mut() {
2854// context_menu.layout(
2855// SizeConstraint {
2856// min: gpui::Point::<Pixels>::zero(),
2857// max: point(
2858// cx.window_size().x * 0.7,
2859// (12. * line_height).min((size.y - line_height) / 2.),
2860// ),
2861// },
2862// editor,
2863// cx,
2864// );
2865// }
2866
2867// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
2868// indicator.layout(
2869// SizeConstraint::strict_along(
2870// Axis::Vertical,
2871// line_height * style.code_actions.vertical_scale,
2872// ),
2873// editor,
2874// cx,
2875// );
2876// }
2877
2878// for fold_indicator in fold_indicators.iter_mut() {
2879// if let Some(indicator) = fold_indicator.as_mut() {
2880// indicator.layout(
2881// SizeConstraint::strict_along(
2882// Axis::Vertical,
2883// line_height * style.code_actions.vertical_scale,
2884// ),
2885// editor,
2886// cx,
2887// );
2888// }
2889// }
2890
2891// if let Some((_, hover_popovers)) = hover.as_mut() {
2892// for hover_popover in hover_popovers.iter_mut() {
2893// hover_popover.layout(
2894// SizeConstraint {
2895// min: gpui::Point::<Pixels>::zero(),
2896// max: point(
2897// (120. * em_width) // Default size
2898// .min(size.x / 2.) // Shrink to half of the editor width
2899// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2900// (16. * line_height) // Default size
2901// .min(size.y / 2.) // Shrink to half of the editor height
2902// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2903// ),
2904// },
2905// editor,
2906// cx,
2907// );
2908// }
2909// }
2910
2911// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
2912// let invisible_symbol_style = RunStyle {
2913// color: self.style.whitespace,
2914// font_id: self.style.text.font_id,
2915// underline: Default::default(),
2916// };
2917
2918// (
2919// size,
2920// LayoutState {
2921// mode,
2922// position_map: Arc::new(PositionMap {
2923// size,
2924// scroll_max,
2925// line_layouts,
2926// line_height,
2927// em_width,
2928// em_advance,
2929// snapshot,
2930// }),
2931// visible_display_row_range: start_row..end_row,
2932// wrap_guides,
2933// gutter_size,
2934// gutter_padding,
2935// text_size,
2936// scrollbar_row_range,
2937// show_scrollbars,
2938// is_singleton,
2939// max_row,
2940// gutter_margin,
2941// active_rows,
2942// highlighted_rows,
2943// highlighted_ranges,
2944// fold_ranges,
2945// line_number_layouts,
2946// display_hunks,
2947// blocks,
2948// selections,
2949// context_menu,
2950// code_actions_indicator,
2951// fold_indicators,
2952// tab_invisible: cx.text_layout_cache().layout_str(
2953// "→",
2954// invisible_symbol_font_size,
2955// &[("→".len(), invisible_symbol_style)],
2956// ),
2957// space_invisible: cx.text_layout_cache().layout_str(
2958// "•",
2959// invisible_symbol_font_size,
2960// &[("•".len(), invisible_symbol_style)],
2961// ),
2962// hover_popovers: hover,
2963// },
2964// )
2965// }
2966
2967// fn paint(
2968// &mut self,
2969// bounds: Bounds<Pixels>,
2970// visible_bounds: Bounds<Pixels>,
2971// layout: &mut Self::LayoutState,
2972// editor: &mut Editor,
2973// cx: &mut ViewContext<Editor>,
2974// ) -> Self::PaintState {
2975// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
2976// cx.scene().push_layer(Some(visible_bounds));
2977
2978// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
2979// let text_bounds = Bounds::<Pixels>::new(
2980// bounds.origin + point(layout.gutter_size.x, 0.0),
2981// layout.text_size,
2982// );
2983
2984// Self::attach_mouse_handlers(
2985// &layout.position_map,
2986// layout.hover_popovers.is_some(),
2987// visible_bounds,
2988// text_bounds,
2989// gutter_bounds,
2990// bounds,
2991// cx,
2992// );
2993
2994// self.paint_background(gutter_bounds, text_bounds, layout, cx);
2995// if layout.gutter_size.x > 0. {
2996// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
2997// }
2998// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
2999
3000// cx.scene().push_layer(Some(bounds));
3001// if !layout.blocks.is_empty {
3002// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3003// }
3004// self.paint_scrollbar(bounds, layout, &editor, cx);
3005// cx.scene().pop_layer();
3006// cx.scene().pop_layer();
3007// }
3008
3009// fn rect_for_text_range(
3010// &self,
3011// range_utf16: Range<usize>,
3012// bounds: Bounds<Pixels>,
3013// _: Bounds<Pixels>,
3014// layout: &Self::LayoutState,
3015// _: &Self::PaintState,
3016// _: &Editor,
3017// _: &ViewContext<Editor>,
3018// ) -> Option<Bounds<Pixels>> {
3019// let text_bounds = Bounds::<Pixels>::new(
3020// bounds.origin + point(layout.gutter_size.x, 0.0),
3021// layout.text_size,
3022// );
3023// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3024// let scroll_position = layout.position_map.snapshot.scroll_position();
3025// let start_row = scroll_position.y as u32;
3026// let scroll_top = scroll_position.y * layout.position_map.line_height;
3027// let scroll_left = scroll_position.x * layout.position_map.em_width;
3028
3029// let range_start = OffsetUtf16(range_utf16.start)
3030// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3031// if range_start.row() < start_row {
3032// return None;
3033// }
3034
3035// let line = &layout
3036// .position_map
3037// .line_layouts
3038// .get((range_start.row() - start_row) as usize)?
3039// .line;
3040// let range_start_x = line.x_for_index(range_start.column() as usize);
3041// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3042// Some(Bounds::<Pixels>::new(
3043// content_origin
3044// + point(
3045// range_start_x,
3046// range_start_y + layout.position_map.line_height,
3047// )
3048// - point(scroll_left, scroll_top),
3049// point(
3050// layout.position_map.em_width,
3051// layout.position_map.line_height,
3052// ),
3053// ))
3054// }
3055
3056// fn debug(
3057// &self,
3058// bounds: Bounds<Pixels>,
3059// _: &Self::LayoutState,
3060// _: &Self::PaintState,
3061// _: &Editor,
3062// _: &ViewContext<Editor>,
3063// ) -> json::Value {
3064// json!({
3065// "type": "BufferElement",
3066// "bounds": bounds.to_json()
3067// })
3068// }
3069// }
3070
3071type BufferRow = u32;
3072
3073pub struct LayoutState {
3074 position_map: Arc<PositionMap>,
3075 gutter_size: Size<Pixels>,
3076 gutter_padding: Pixels,
3077 gutter_margin: Pixels,
3078 text_size: gpui::Size<Pixels>,
3079 mode: EditorMode,
3080 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3081 visible_anchor_range: Range<Anchor>,
3082 visible_display_row_range: Range<u32>,
3083 active_rows: BTreeMap<u32, bool>,
3084 highlighted_rows: Option<Range<u32>>,
3085 line_numbers: Vec<Option<ShapedLine>>,
3086 display_hunks: Vec<DisplayDiffHunk>,
3087 blocks: Vec<BlockLayout>,
3088 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3089 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3090 scrollbar_row_range: Range<f32>,
3091 show_scrollbars: bool,
3092 is_singleton: bool,
3093 max_row: u32,
3094 context_menu: Option<(DisplayPoint, AnyElement<Editor>)>,
3095 code_actions_indicator: Option<CodeActionsIndicator>,
3096 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement<Editor>>)>,
3097 fold_indicators: Vec<Option<AnyElement<Editor>>>,
3098 tab_invisible: ShapedLine,
3099 space_invisible: ShapedLine,
3100}
3101
3102struct CodeActionsIndicator {
3103 row: u32,
3104 element: AnyElement<Editor>,
3105}
3106
3107struct PositionMap {
3108 size: Size<Pixels>,
3109 line_height: Pixels,
3110 scroll_position: gpui::Point<Pixels>,
3111 scroll_max: gpui::Point<f32>,
3112 em_width: Pixels,
3113 em_advance: Pixels,
3114 line_layouts: Vec<LineWithInvisibles>,
3115 snapshot: EditorSnapshot,
3116}
3117
3118#[derive(Debug, Copy, Clone)]
3119pub struct PointForPosition {
3120 pub previous_valid: DisplayPoint,
3121 pub next_valid: DisplayPoint,
3122 pub exact_unclipped: DisplayPoint,
3123 pub column_overshoot_after_line_end: u32,
3124}
3125
3126impl PointForPosition {
3127 #[cfg(test)]
3128 pub fn valid(valid: DisplayPoint) -> Self {
3129 Self {
3130 previous_valid: valid,
3131 next_valid: valid,
3132 exact_unclipped: valid,
3133 column_overshoot_after_line_end: 0,
3134 }
3135 }
3136
3137 pub fn as_valid(&self) -> Option<DisplayPoint> {
3138 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3139 Some(self.previous_valid)
3140 } else {
3141 None
3142 }
3143 }
3144}
3145
3146impl PositionMap {
3147 fn point_for_position(
3148 &self,
3149 text_bounds: Bounds<Pixels>,
3150 position: gpui::Point<Pixels>,
3151 ) -> PointForPosition {
3152 let scroll_position = self.snapshot.scroll_position();
3153 let position = position - text_bounds.origin;
3154 let y = position.y.max(px(0.)).min(self.size.width);
3155 let x = position.x + (scroll_position.x * self.em_width);
3156 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3157
3158 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3159 .line_layouts
3160 .get(row as usize - scroll_position.y as usize)
3161 .map(|&LineWithInvisibles { ref line, .. }| line)
3162 {
3163 if let Some(ix) = line.index_for_x(x) {
3164 (ix as u32, px(0.))
3165 } else {
3166 (line.len as u32, px(0.).max(x - line.width))
3167 }
3168 } else {
3169 (0, x)
3170 };
3171
3172 let mut exact_unclipped = DisplayPoint::new(row, column);
3173 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3174 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3175
3176 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3177 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3178 PointForPosition {
3179 previous_valid,
3180 next_valid,
3181 exact_unclipped,
3182 column_overshoot_after_line_end,
3183 }
3184 }
3185}
3186
3187struct BlockLayout {
3188 row: u32,
3189 element: AnyElement<Editor>,
3190 available_space: Size<AvailableSpace>,
3191 style: BlockStyle,
3192}
3193
3194fn layout_line(
3195 row: u32,
3196 snapshot: &EditorSnapshot,
3197 style: &EditorStyle,
3198 cx: &WindowContext,
3199) -> Result<ShapedLine> {
3200 let mut line = snapshot.line(row);
3201
3202 if line.len() > MAX_LINE_LEN {
3203 let mut len = MAX_LINE_LEN;
3204 while !line.is_char_boundary(len) {
3205 len -= 1;
3206 }
3207
3208 line.truncate(len);
3209 }
3210
3211 cx.text_system().shape_line(
3212 line.into(),
3213 style.text.font_size.to_pixels(cx.rem_size()),
3214 &[TextRun {
3215 len: snapshot.line_len(row) as usize,
3216 font: style.text.font(),
3217 color: Hsla::default(),
3218 background_color: None,
3219 underline: None,
3220 }],
3221 )
3222}
3223
3224#[derive(Debug)]
3225pub struct Cursor {
3226 origin: gpui::Point<Pixels>,
3227 block_width: Pixels,
3228 line_height: Pixels,
3229 color: Hsla,
3230 shape: CursorShape,
3231 block_text: Option<ShapedLine>,
3232}
3233
3234impl Cursor {
3235 pub fn new(
3236 origin: gpui::Point<Pixels>,
3237 block_width: Pixels,
3238 line_height: Pixels,
3239 color: Hsla,
3240 shape: CursorShape,
3241 block_text: Option<ShapedLine>,
3242 ) -> Cursor {
3243 Cursor {
3244 origin,
3245 block_width,
3246 line_height,
3247 color,
3248 shape,
3249 block_text,
3250 }
3251 }
3252
3253 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3254 Bounds {
3255 origin: self.origin + origin,
3256 size: size(self.block_width, self.line_height),
3257 }
3258 }
3259
3260 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3261 let bounds = match self.shape {
3262 CursorShape::Bar => Bounds {
3263 origin: self.origin + origin,
3264 size: size(px(2.0), self.line_height),
3265 },
3266 CursorShape::Block | CursorShape::Hollow => Bounds {
3267 origin: self.origin + origin,
3268 size: size(self.block_width, self.line_height),
3269 },
3270 CursorShape::Underscore => Bounds {
3271 origin: self.origin
3272 + origin
3273 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3274 size: size(self.block_width, px(2.0)),
3275 },
3276 };
3277
3278 //Draw background or border quad
3279 if matches!(self.shape, CursorShape::Hollow) {
3280 cx.paint_quad(
3281 bounds,
3282 Corners::default(),
3283 transparent_black(),
3284 Edges::all(px(1.)),
3285 self.color,
3286 );
3287 } else {
3288 cx.paint_quad(
3289 bounds,
3290 Corners::default(),
3291 self.color,
3292 Edges::default(),
3293 transparent_black(),
3294 );
3295 }
3296
3297 if let Some(block_text) = &self.block_text {
3298 block_text.paint(self.origin + origin, self.line_height, cx);
3299 }
3300 }
3301
3302 pub fn shape(&self) -> CursorShape {
3303 self.shape
3304 }
3305}
3306
3307#[derive(Debug)]
3308pub struct HighlightedRange {
3309 pub start_y: Pixels,
3310 pub line_height: Pixels,
3311 pub lines: Vec<HighlightedRangeLine>,
3312 pub color: Hsla,
3313 pub corner_radius: Pixels,
3314}
3315
3316#[derive(Debug)]
3317pub struct HighlightedRangeLine {
3318 pub start_x: Pixels,
3319 pub end_x: Pixels,
3320}
3321
3322impl HighlightedRange {
3323 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3324 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3325 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3326 self.paint_lines(
3327 self.start_y + self.line_height,
3328 &self.lines[1..],
3329 bounds,
3330 cx,
3331 );
3332 } else {
3333 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3334 }
3335 }
3336
3337 fn paint_lines(
3338 &self,
3339 start_y: Pixels,
3340 lines: &[HighlightedRangeLine],
3341 bounds: Bounds<Pixels>,
3342 cx: &mut WindowContext,
3343 ) {
3344 if lines.is_empty() {
3345 return;
3346 }
3347
3348 let first_line = lines.first().unwrap();
3349 let last_line = lines.last().unwrap();
3350
3351 let first_top_left = point(first_line.start_x, start_y);
3352 let first_top_right = point(first_line.end_x, start_y);
3353
3354 let curve_height = point(Pixels::ZERO, self.corner_radius);
3355 let curve_width = |start_x: Pixels, end_x: Pixels| {
3356 let max = (end_x - start_x) / 2.;
3357 let width = if max < self.corner_radius {
3358 max
3359 } else {
3360 self.corner_radius
3361 };
3362
3363 point(width, Pixels::ZERO)
3364 };
3365
3366 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3367 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3368 path.curve_to(first_top_right + curve_height, first_top_right);
3369
3370 let mut iter = lines.iter().enumerate().peekable();
3371 while let Some((ix, line)) = iter.next() {
3372 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3373
3374 if let Some((_, next_line)) = iter.peek() {
3375 let next_top_right = point(next_line.end_x, bottom_right.y);
3376
3377 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3378 Ordering::Equal => {
3379 path.line_to(bottom_right);
3380 }
3381 Ordering::Less => {
3382 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3383 path.line_to(bottom_right - curve_height);
3384 if self.corner_radius > Pixels::ZERO {
3385 path.curve_to(bottom_right - curve_width, bottom_right);
3386 }
3387 path.line_to(next_top_right + curve_width);
3388 if self.corner_radius > Pixels::ZERO {
3389 path.curve_to(next_top_right + curve_height, next_top_right);
3390 }
3391 }
3392 Ordering::Greater => {
3393 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3394 path.line_to(bottom_right - curve_height);
3395 if self.corner_radius > Pixels::ZERO {
3396 path.curve_to(bottom_right + curve_width, bottom_right);
3397 }
3398 path.line_to(next_top_right - curve_width);
3399 if self.corner_radius > Pixels::ZERO {
3400 path.curve_to(next_top_right + curve_height, next_top_right);
3401 }
3402 }
3403 }
3404 } else {
3405 let curve_width = curve_width(line.start_x, line.end_x);
3406 path.line_to(bottom_right - curve_height);
3407 if self.corner_radius > Pixels::ZERO {
3408 path.curve_to(bottom_right - curve_width, bottom_right);
3409 }
3410
3411 let bottom_left = point(line.start_x, bottom_right.y);
3412 path.line_to(bottom_left + curve_width);
3413 if self.corner_radius > Pixels::ZERO {
3414 path.curve_to(bottom_left - curve_height, bottom_left);
3415 }
3416 }
3417 }
3418
3419 if first_line.start_x > last_line.start_x {
3420 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3421 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3422 path.line_to(second_top_left + curve_height);
3423 if self.corner_radius > Pixels::ZERO {
3424 path.curve_to(second_top_left + curve_width, second_top_left);
3425 }
3426 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3427 path.line_to(first_bottom_left - curve_width);
3428 if self.corner_radius > Pixels::ZERO {
3429 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3430 }
3431 }
3432
3433 path.line_to(first_top_left + curve_height);
3434 if self.corner_radius > Pixels::ZERO {
3435 path.curve_to(first_top_left + top_curve_width, first_top_left);
3436 }
3437 path.line_to(first_top_right - top_curve_width);
3438
3439 cx.paint_path(path, self.color);
3440 }
3441}
3442
3443pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3444 (delta.pow(1.5) / 100.0).into()
3445}
3446
3447fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3448 (delta.pow(1.2) / 300.0).into()
3449}
3450
3451// #[cfg(test)]
3452// mod tests {
3453// use super::*;
3454// use crate::{
3455// display_map::{BlockDisposition, BlockProperties},
3456// editor_tests::{init_test, update_test_language_settings},
3457// Editor, MultiBuffer,
3458// };
3459// use gpui::TestAppContext;
3460// use language::language_settings;
3461// use log::info;
3462// use std::{num::NonZeroU32, sync::Arc};
3463// use util::test::sample_text;
3464
3465// #[gpui::test]
3466// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3467// init_test(cx, |_| {});
3468// let editor = cx
3469// .add_window(|cx| {
3470// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3471// Editor::new(EditorMode::Full, buffer, None, None, cx)
3472// })
3473// .root(cx);
3474// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3475
3476// let layouts = editor.update(cx, |editor, cx| {
3477// let snapshot = editor.snapshot(cx);
3478// element
3479// .layout_line_numbers(
3480// 0..6,
3481// &Default::default(),
3482// DisplayPoint::new(0, 0),
3483// false,
3484// &snapshot,
3485// cx,
3486// )
3487// .0
3488// });
3489// assert_eq!(layouts.len(), 6);
3490
3491// let relative_rows = editor.update(cx, |editor, cx| {
3492// let snapshot = editor.snapshot(cx);
3493// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3494// });
3495// assert_eq!(relative_rows[&0], 3);
3496// assert_eq!(relative_rows[&1], 2);
3497// assert_eq!(relative_rows[&2], 1);
3498// // current line has no relative number
3499// assert_eq!(relative_rows[&4], 1);
3500// assert_eq!(relative_rows[&5], 2);
3501
3502// // works if cursor is before screen
3503// let relative_rows = editor.update(cx, |editor, cx| {
3504// let snapshot = editor.snapshot(cx);
3505
3506// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3507// });
3508// assert_eq!(relative_rows.len(), 3);
3509// assert_eq!(relative_rows[&3], 2);
3510// assert_eq!(relative_rows[&4], 3);
3511// assert_eq!(relative_rows[&5], 4);
3512
3513// // works if cursor is after screen
3514// let relative_rows = editor.update(cx, |editor, cx| {
3515// let snapshot = editor.snapshot(cx);
3516
3517// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3518// });
3519// assert_eq!(relative_rows.len(), 3);
3520// assert_eq!(relative_rows[&0], 5);
3521// assert_eq!(relative_rows[&1], 4);
3522// assert_eq!(relative_rows[&2], 3);
3523// }
3524
3525// #[gpui::test]
3526// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3527// init_test(cx, |_| {});
3528
3529// let editor = cx
3530// .add_window(|cx| {
3531// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3532// Editor::new(EditorMode::Full, buffer, None, None, cx)
3533// })
3534// .root(cx);
3535// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3536// let (_, state) = editor.update(cx, |editor, cx| {
3537// editor.cursor_shape = CursorShape::Block;
3538// editor.change_selections(None, cx, |s| {
3539// s.select_ranges([
3540// Point::new(0, 0)..Point::new(1, 0),
3541// Point::new(3, 2)..Point::new(3, 3),
3542// Point::new(5, 6)..Point::new(6, 0),
3543// ]);
3544// });
3545// element.layout(
3546// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3547// editor,
3548// cx,
3549// )
3550// });
3551// assert_eq!(state.selections.len(), 1);
3552// let local_selections = &state.selections[0].1;
3553// assert_eq!(local_selections.len(), 3);
3554// // moves cursor back one line
3555// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3556// assert_eq!(
3557// local_selections[0].range,
3558// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3559// );
3560
3561// // moves cursor back one column
3562// assert_eq!(
3563// local_selections[1].range,
3564// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3565// );
3566// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3567
3568// // leaves cursor on the max point
3569// assert_eq!(
3570// local_selections[2].range,
3571// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3572// );
3573// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3574
3575// // active lines does not include 1 (even though the range of the selection does)
3576// assert_eq!(
3577// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3578// vec![0, 3, 5, 6]
3579// );
3580
3581// // multi-buffer support
3582// // in DisplayPoint co-ordinates, this is what we're dealing with:
3583// // 0: [[file
3584// // 1: header]]
3585// // 2: aaaaaa
3586// // 3: bbbbbb
3587// // 4: cccccc
3588// // 5:
3589// // 6: ...
3590// // 7: ffffff
3591// // 8: gggggg
3592// // 9: hhhhhh
3593// // 10:
3594// // 11: [[file
3595// // 12: header]]
3596// // 13: bbbbbb
3597// // 14: cccccc
3598// // 15: dddddd
3599// let editor = cx
3600// .add_window(|cx| {
3601// let buffer = MultiBuffer::build_multi(
3602// [
3603// (
3604// &(sample_text(8, 6, 'a') + "\n"),
3605// vec![
3606// Point::new(0, 0)..Point::new(3, 0),
3607// Point::new(4, 0)..Point::new(7, 0),
3608// ],
3609// ),
3610// (
3611// &(sample_text(8, 6, 'a') + "\n"),
3612// vec![Point::new(1, 0)..Point::new(3, 0)],
3613// ),
3614// ],
3615// cx,
3616// );
3617// Editor::new(EditorMode::Full, buffer, None, None, cx)
3618// })
3619// .root(cx);
3620// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3621// let (_, state) = editor.update(cx, |editor, cx| {
3622// editor.cursor_shape = CursorShape::Block;
3623// editor.change_selections(None, cx, |s| {
3624// s.select_display_ranges([
3625// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3626// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3627// ]);
3628// });
3629// element.layout(
3630// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3631// editor,
3632// cx,
3633// )
3634// });
3635
3636// assert_eq!(state.selections.len(), 1);
3637// let local_selections = &state.selections[0].1;
3638// assert_eq!(local_selections.len(), 2);
3639
3640// // moves cursor on excerpt boundary back a line
3641// // and doesn't allow selection to bleed through
3642// assert_eq!(
3643// local_selections[0].range,
3644// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3645// );
3646// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3647
3648// // moves cursor on buffer boundary back two lines
3649// // and doesn't allow selection to bleed through
3650// assert_eq!(
3651// local_selections[1].range,
3652// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3653// );
3654// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3655// }
3656
3657// #[gpui::test]
3658// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3659// init_test(cx, |_| {});
3660
3661// let editor = cx
3662// .add_window(|cx| {
3663// let buffer = MultiBuffer::build_simple("", cx);
3664// Editor::new(EditorMode::Full, buffer, None, None, cx)
3665// })
3666// .root(cx);
3667
3668// editor.update(cx, |editor, cx| {
3669// editor.set_placeholder_text("hello", cx);
3670// editor.insert_blocks(
3671// [BlockProperties {
3672// style: BlockStyle::Fixed,
3673// disposition: BlockDisposition::Above,
3674// height: 3,
3675// position: Anchor::min(),
3676// render: Arc::new(|_| Empty::new().into_any),
3677// }],
3678// None,
3679// cx,
3680// );
3681
3682// // Blur the editor so that it displays placeholder text.
3683// cx.blur();
3684// });
3685
3686// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3687// let (size, mut state) = editor.update(cx, |editor, cx| {
3688// element.layout(
3689// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3690// editor,
3691// cx,
3692// )
3693// });
3694
3695// assert_eq!(state.position_map.line_layouts.len(), 4);
3696// assert_eq!(
3697// state
3698// .line_number_layouts
3699// .iter()
3700// .map(Option::is_some)
3701// .collect::<Vec<_>>(),
3702// &[false, false, false, true]
3703// );
3704
3705// // Don't panic.
3706// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3707// editor.update(cx, |editor, cx| {
3708// element.paint(bounds, bounds, &mut state, editor, cx);
3709// });
3710// }
3711
3712// #[gpui::test]
3713// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3714// const TAB_SIZE: u32 = 4;
3715
3716// let input_text = "\t \t|\t| a b";
3717// let expected_invisibles = vec![
3718// Invisible::Tab {
3719// line_start_offset: 0,
3720// },
3721// Invisible::Whitespace {
3722// line_offset: TAB_SIZE as usize,
3723// },
3724// Invisible::Tab {
3725// line_start_offset: TAB_SIZE as usize + 1,
3726// },
3727// Invisible::Tab {
3728// line_start_offset: TAB_SIZE as usize * 2 + 1,
3729// },
3730// Invisible::Whitespace {
3731// line_offset: TAB_SIZE as usize * 3 + 1,
3732// },
3733// Invisible::Whitespace {
3734// line_offset: TAB_SIZE as usize * 3 + 3,
3735// },
3736// ];
3737// assert_eq!(
3738// expected_invisibles.len(),
3739// input_text
3740// .chars()
3741// .filter(|initial_char| initial_char.is_whitespace())
3742// .count(),
3743// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3744// );
3745
3746// init_test(cx, |s| {
3747// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3748// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3749// });
3750
3751// let actual_invisibles =
3752// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3753
3754// assert_eq!(expected_invisibles, actual_invisibles);
3755// }
3756
3757// #[gpui::test]
3758// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3759// init_test(cx, |s| {
3760// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3761// s.defaults.tab_size = NonZeroU32::new(4);
3762// });
3763
3764// for editor_mode_without_invisibles in [
3765// EditorMode::SingleLine,
3766// EditorMode::AutoHeight { max_lines: 100 },
3767// ] {
3768// let invisibles = collect_invisibles_from_new_editor(
3769// cx,
3770// editor_mode_without_invisibles,
3771// "\t\t\t| | a b",
3772// 500.0,
3773// );
3774// assert!(invisibles.is_empty,
3775// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3776// }
3777// }
3778
3779// #[gpui::test]
3780// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3781// let tab_size = 4;
3782// let input_text = "a\tbcd ".repeat(9);
3783// let repeated_invisibles = [
3784// Invisible::Tab {
3785// line_start_offset: 1,
3786// },
3787// Invisible::Whitespace {
3788// line_offset: tab_size as usize + 3,
3789// },
3790// Invisible::Whitespace {
3791// line_offset: tab_size as usize + 4,
3792// },
3793// Invisible::Whitespace {
3794// line_offset: tab_size as usize + 5,
3795// },
3796// ];
3797// let expected_invisibles = std::iter::once(repeated_invisibles)
3798// .cycle()
3799// .take(9)
3800// .flatten()
3801// .collect::<Vec<_>>();
3802// assert_eq!(
3803// expected_invisibles.len(),
3804// input_text
3805// .chars()
3806// .filter(|initial_char| initial_char.is_whitespace())
3807// .count(),
3808// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3809// );
3810// info!("Expected invisibles: {expected_invisibles:?}");
3811
3812// init_test(cx, |_| {});
3813
3814// // Put the same string with repeating whitespace pattern into editors of various size,
3815// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3816// let resize_step = 10.0;
3817// let mut editor_width = 200.0;
3818// while editor_width <= 1000.0 {
3819// update_test_language_settings(cx, |s| {
3820// s.defaults.tab_size = NonZeroU32::new(tab_size);
3821// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3822// s.defaults.preferred_line_length = Some(editor_width as u32);
3823// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3824// });
3825
3826// let actual_invisibles =
3827// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
3828
3829// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3830// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3831// let mut i = 0;
3832// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3833// i = actual_index;
3834// match expected_invisibles.get(i) {
3835// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3836// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3837// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3838// _ => {
3839// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3840// }
3841// },
3842// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3843// }
3844// }
3845// let missing_expected_invisibles = &expected_invisibles[i + 1..];
3846// assert!(
3847// missing_expected_invisibles.is_empty,
3848// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3849// );
3850
3851// editor_width += resize_step;
3852// }
3853// }
3854
3855// fn collect_invisibles_from_new_editor(
3856// cx: &mut TestAppContext,
3857// editor_mode: EditorMode,
3858// input_text: &str,
3859// editor_width: f32,
3860// ) -> Vec<Invisible> {
3861// info!(
3862// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
3863// );
3864// let editor = cx
3865// .add_window(|cx| {
3866// let buffer = MultiBuffer::build_simple(&input_text, cx);
3867// Editor::new(editor_mode, buffer, None, None, cx)
3868// })
3869// .root(cx);
3870
3871// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3872// let (_, layout_state) = editor.update(cx, |editor, cx| {
3873// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3874// editor.set_wrap_width(Some(editor_width), cx);
3875
3876// element.layout(
3877// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
3878// editor,
3879// cx,
3880// )
3881// });
3882
3883// layout_state
3884// .position_map
3885// .line_layouts
3886// .iter()
3887// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3888// .flatten()
3889// .cloned()
3890// .collect()
3891// }
3892// }
3893
3894fn register_actions(cx: &mut ViewContext<Editor>) {
3895 register_action(cx, Editor::move_left);
3896 register_action(cx, Editor::move_right);
3897 register_action(cx, Editor::move_down);
3898 register_action(cx, Editor::move_up);
3899 // on_action(cx, Editor::new_file); todo!()
3900 // on_action(cx, Editor::new_file_in_direction); todo!()
3901 register_action(cx, Editor::cancel);
3902 register_action(cx, Editor::newline);
3903 register_action(cx, Editor::newline_above);
3904 register_action(cx, Editor::newline_below);
3905 register_action(cx, Editor::backspace);
3906 register_action(cx, Editor::delete);
3907 register_action(cx, Editor::tab);
3908 register_action(cx, Editor::tab_prev);
3909 register_action(cx, Editor::indent);
3910 register_action(cx, Editor::outdent);
3911 register_action(cx, Editor::delete_line);
3912 register_action(cx, Editor::join_lines);
3913 register_action(cx, Editor::sort_lines_case_sensitive);
3914 register_action(cx, Editor::sort_lines_case_insensitive);
3915 register_action(cx, Editor::reverse_lines);
3916 register_action(cx, Editor::shuffle_lines);
3917 register_action(cx, Editor::convert_to_upper_case);
3918 register_action(cx, Editor::convert_to_lower_case);
3919 register_action(cx, Editor::convert_to_title_case);
3920 register_action(cx, Editor::convert_to_snake_case);
3921 register_action(cx, Editor::convert_to_kebab_case);
3922 register_action(cx, Editor::convert_to_upper_camel_case);
3923 register_action(cx, Editor::convert_to_lower_camel_case);
3924 register_action(cx, Editor::delete_to_previous_word_start);
3925 register_action(cx, Editor::delete_to_previous_subword_start);
3926 register_action(cx, Editor::delete_to_next_word_end);
3927 register_action(cx, Editor::delete_to_next_subword_end);
3928 register_action(cx, Editor::delete_to_beginning_of_line);
3929 register_action(cx, Editor::delete_to_end_of_line);
3930 register_action(cx, Editor::cut_to_end_of_line);
3931 register_action(cx, Editor::duplicate_line);
3932 register_action(cx, Editor::move_line_up);
3933 register_action(cx, Editor::move_line_down);
3934 register_action(cx, Editor::transpose);
3935 register_action(cx, Editor::cut);
3936 register_action(cx, Editor::copy);
3937 register_action(cx, Editor::paste);
3938 register_action(cx, Editor::undo);
3939 register_action(cx, Editor::redo);
3940 register_action(cx, Editor::move_page_up);
3941 register_action(cx, Editor::move_page_down);
3942 register_action(cx, Editor::next_screen);
3943 register_action(cx, Editor::scroll_cursor_top);
3944 register_action(cx, Editor::scroll_cursor_center);
3945 register_action(cx, Editor::scroll_cursor_bottom);
3946 register_action(cx, |editor, _: &LineDown, cx| {
3947 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
3948 });
3949 register_action(cx, |editor, _: &LineUp, cx| {
3950 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
3951 });
3952 register_action(cx, |editor, _: &HalfPageDown, cx| {
3953 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
3954 });
3955 register_action(cx, |editor, _: &HalfPageUp, cx| {
3956 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
3957 });
3958 register_action(cx, |editor, _: &PageDown, cx| {
3959 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
3960 });
3961 register_action(cx, |editor, _: &PageUp, cx| {
3962 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
3963 });
3964 register_action(cx, Editor::move_to_previous_word_start);
3965 register_action(cx, Editor::move_to_previous_subword_start);
3966 register_action(cx, Editor::move_to_next_word_end);
3967 register_action(cx, Editor::move_to_next_subword_end);
3968 register_action(cx, Editor::move_to_beginning_of_line);
3969 register_action(cx, Editor::move_to_end_of_line);
3970 register_action(cx, Editor::move_to_start_of_paragraph);
3971 register_action(cx, Editor::move_to_end_of_paragraph);
3972 register_action(cx, Editor::move_to_beginning);
3973 register_action(cx, Editor::move_to_end);
3974 register_action(cx, Editor::select_up);
3975 register_action(cx, Editor::select_down);
3976 register_action(cx, Editor::select_left);
3977 register_action(cx, Editor::select_right);
3978 register_action(cx, Editor::select_to_previous_word_start);
3979 register_action(cx, Editor::select_to_previous_subword_start);
3980 register_action(cx, Editor::select_to_next_word_end);
3981 register_action(cx, Editor::select_to_next_subword_end);
3982 register_action(cx, Editor::select_to_beginning_of_line);
3983 register_action(cx, Editor::select_to_end_of_line);
3984 register_action(cx, Editor::select_to_start_of_paragraph);
3985 register_action(cx, Editor::select_to_end_of_paragraph);
3986 register_action(cx, Editor::select_to_beginning);
3987 register_action(cx, Editor::select_to_end);
3988 register_action(cx, Editor::select_all);
3989 register_action(cx, |editor, action, cx| {
3990 editor.select_all_matches(action, cx).log_err();
3991 });
3992 register_action(cx, Editor::select_line);
3993 register_action(cx, Editor::split_selection_into_lines);
3994 register_action(cx, Editor::add_selection_above);
3995 register_action(cx, Editor::add_selection_below);
3996 register_action(cx, |editor, action, cx| {
3997 editor.select_next(action, cx).log_err();
3998 });
3999 register_action(cx, |editor, action, cx| {
4000 editor.select_previous(action, cx).log_err();
4001 });
4002 register_action(cx, Editor::toggle_comments);
4003 register_action(cx, Editor::select_larger_syntax_node);
4004 register_action(cx, Editor::select_smaller_syntax_node);
4005 register_action(cx, Editor::move_to_enclosing_bracket);
4006 register_action(cx, Editor::undo_selection);
4007 register_action(cx, Editor::redo_selection);
4008 register_action(cx, Editor::go_to_diagnostic);
4009 register_action(cx, Editor::go_to_prev_diagnostic);
4010 register_action(cx, Editor::go_to_hunk);
4011 register_action(cx, Editor::go_to_prev_hunk);
4012 register_action(cx, Editor::go_to_definition);
4013 register_action(cx, Editor::go_to_definition_split);
4014 register_action(cx, Editor::go_to_type_definition);
4015 register_action(cx, Editor::go_to_type_definition_split);
4016 register_action(cx, Editor::fold);
4017 register_action(cx, Editor::fold_at);
4018 register_action(cx, Editor::unfold_lines);
4019 register_action(cx, Editor::unfold_at);
4020 register_action(cx, Editor::fold_selected_ranges);
4021 register_action(cx, Editor::show_completions);
4022 register_action(cx, Editor::toggle_code_actions);
4023 // on_action(cx, Editor::open_excerpts); todo!()
4024 register_action(cx, Editor::toggle_soft_wrap);
4025 register_action(cx, Editor::toggle_inlay_hints);
4026 register_action(cx, Editor::reveal_in_finder);
4027 register_action(cx, Editor::copy_path);
4028 register_action(cx, Editor::copy_relative_path);
4029 register_action(cx, Editor::copy_highlight_json);
4030 register_action(cx, |editor, action, cx| {
4031 editor
4032 .format(action, cx)
4033 .map(|task| task.detach_and_log_err(cx));
4034 });
4035 register_action(cx, Editor::restart_language_server);
4036 register_action(cx, Editor::show_character_palette);
4037 // on_action(cx, Editor::confirm_completion); todo!()
4038 register_action(cx, |editor, action, cx| {
4039 editor
4040 .confirm_code_action(action, cx)
4041 .map(|task| task.detach_and_log_err(cx));
4042 });
4043 register_action(cx, |editor, action, cx| {
4044 editor
4045 .rename(action, cx)
4046 .map(|task| task.detach_and_log_err(cx));
4047 });
4048 register_action(cx, |editor, action, cx| {
4049 editor
4050 .confirm_rename(action, cx)
4051 .map(|task| task.detach_and_log_err(cx));
4052 });
4053 register_action(cx, |editor, action, cx| {
4054 editor
4055 .find_all_references(action, cx)
4056 .map(|task| task.detach_and_log_err(cx));
4057 });
4058 register_action(cx, Editor::next_copilot_suggestion);
4059 register_action(cx, Editor::previous_copilot_suggestion);
4060 register_action(cx, Editor::copilot_suggest);
4061 register_action(cx, Editor::context_menu_first);
4062 register_action(cx, Editor::context_menu_prev);
4063 register_action(cx, Editor::context_menu_next);
4064 register_action(cx, Editor::context_menu_last);
4065}
4066
4067fn register_action<T: Action>(
4068 cx: &mut ViewContext<Editor>,
4069 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4070) {
4071 cx.on_action(TypeId::of::<T>(), move |editor, action, phase, cx| {
4072 let action = action.downcast_ref().unwrap();
4073 if phase == DispatchPhase::Bubble {
4074 listener(editor, action, cx);
4075 }
4076 })
4077}