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 point, px, relative, size, transparent_black, Action, AnyElement, AvailableSpace, BorrowWindow,
22 Bounds, Component, ContentMask, Corners, DispatchPhase, Edges, Element, ElementId,
23 ElementInputHandler, Entity, EntityId, Hsla, Line, MouseButton, MouseDownEvent, MouseMoveEvent,
24 MouseUpEvent, ParentComponent, Pixels, ScrollWheelEvent, Size, Style, Styled, TextRun,
25 TextStyle, View, ViewContext, WindowContext,
26};
27use itertools::Itertools;
28use language::language_settings::ShowWhitespaceSetting;
29use multi_buffer::Anchor;
30use project::{
31 project_settings::{GitGutterSetting, ProjectSettings},
32 ProjectPath,
33};
34use settings::Settings;
35use smallvec::SmallVec;
36use std::{
37 any::TypeId,
38 borrow::Cow,
39 cmp::{self, Ordering},
40 fmt::Write,
41 iter,
42 ops::Range,
43 sync::Arc,
44};
45use sum_tree::Bias;
46use theme::{ActiveTheme, PlayerColor};
47use ui::{h_stack, IconButton};
48use util::ResultExt;
49use workspace::item::Item;
50
51enum FoldMarkers {}
52
53struct SelectionLayout {
54 head: DisplayPoint,
55 cursor_shape: CursorShape,
56 is_newest: bool,
57 is_local: bool,
58 range: Range<DisplayPoint>,
59 active_rows: Range<u32>,
60}
61
62impl SelectionLayout {
63 fn new<T: ToPoint + ToDisplayPoint + Clone>(
64 selection: Selection<T>,
65 line_mode: bool,
66 cursor_shape: CursorShape,
67 map: &DisplaySnapshot,
68 is_newest: bool,
69 is_local: bool,
70 ) -> Self {
71 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
72 let display_selection = point_selection.map(|p| p.to_display_point(map));
73 let mut range = display_selection.range();
74 let mut head = display_selection.head();
75 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
76 ..map.next_line_boundary(point_selection.end).1.row();
77
78 // vim visual line mode
79 if line_mode {
80 let point_range = map.expand_to_line(point_selection.range());
81 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
82 }
83
84 // any vim visual mode (including line mode)
85 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
86 if head.column() > 0 {
87 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
88 } else if head.row() > 0 && head != map.max_point() {
89 head = map.clip_point(
90 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
91 Bias::Left,
92 );
93 // updating range.end is a no-op unless you're cursor is
94 // on the newline containing a multi-buffer divider
95 // in which case the clip_point may have moved the head up
96 // an additional row.
97 range.end = DisplayPoint::new(head.row() + 1, 0);
98 active_rows.end = head.row();
99 }
100 }
101
102 Self {
103 head,
104 cursor_shape,
105 is_newest,
106 is_local,
107 range,
108 active_rows,
109 }
110 }
111}
112
113pub struct EditorElement {
114 editor_id: EntityId,
115 style: EditorStyle,
116}
117
118impl EditorElement {
119 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
120 Self {
121 editor_id: editor.entity_id(),
122 style,
123 }
124 }
125
126 fn mouse_down(
127 editor: &mut Editor,
128 event: &MouseDownEvent,
129 position_map: &PositionMap,
130 text_bounds: Bounds<Pixels>,
131 gutter_bounds: Bounds<Pixels>,
132 cx: &mut ViewContext<Editor>,
133 ) -> bool {
134 let mut click_count = event.click_count;
135 let modifiers = event.modifiers;
136
137 if gutter_bounds.contains_point(&event.position) {
138 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
139 } else if !text_bounds.contains_point(&event.position) {
140 return false;
141 }
142
143 let point_for_position = position_map.point_for_position(text_bounds, event.position);
144 let position = point_for_position.previous_valid;
145 if modifiers.shift && modifiers.alt {
146 editor.select(
147 SelectPhase::BeginColumnar {
148 position,
149 goal_column: point_for_position.exact_unclipped.column(),
150 },
151 cx,
152 );
153 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
154 editor.select(
155 SelectPhase::Extend {
156 position,
157 click_count,
158 },
159 cx,
160 );
161 } else {
162 editor.select(
163 SelectPhase::Begin {
164 position,
165 add: modifiers.alt,
166 click_count,
167 },
168 cx,
169 );
170 }
171
172 true
173 }
174
175 // fn mouse_right_down(
176 // editor: &mut Editor,
177 // position: gpui::Point<Pixels>,
178 // position_map: &PositionMap,
179 // text_bounds: Bounds<Pixels>,
180 // cx: &mut EventContext<Editor>,
181 // ) -> bool {
182 // if !text_bounds.contains_point(position) {
183 // return false;
184 // }
185 // let point_for_position = position_map.point_for_position(text_bounds, position);
186 // mouse_context_menu::deploy_context_menu(
187 // editor,
188 // position,
189 // point_for_position.previous_valid,
190 // cx,
191 // );
192 // true
193 // }
194
195 fn mouse_up(
196 editor: &mut Editor,
197 event: &MouseUpEvent,
198 position_map: &PositionMap,
199 text_bounds: Bounds<Pixels>,
200 cx: &mut ViewContext<Editor>,
201 ) -> bool {
202 let end_selection = editor.has_pending_selection();
203 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
204
205 if end_selection {
206 editor.select(SelectPhase::End, cx);
207 }
208
209 if !pending_nonempty_selections
210 && event.modifiers.command
211 && text_bounds.contains_point(&event.position)
212 {
213 let point = position_map.point_for_position(text_bounds, event.position);
214 let could_be_inlay = point.as_valid().is_none();
215 let split = event.modifiers.alt;
216 if event.modifiers.shift || could_be_inlay {
217 go_to_fetched_type_definition(editor, point, split, cx);
218 } else {
219 go_to_fetched_definition(editor, point, split, cx);
220 }
221
222 return true;
223 }
224
225 end_selection
226 }
227
228 fn mouse_moved(
229 editor: &mut Editor,
230 event: &MouseMoveEvent,
231 position_map: &PositionMap,
232 text_bounds: Bounds<Pixels>,
233 gutter_bounds: Bounds<Pixels>,
234 cx: &mut ViewContext<Editor>,
235 ) -> bool {
236 let modifiers = event.modifiers;
237 if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
238 let point_for_position = position_map.point_for_position(text_bounds, event.position);
239 let mut scroll_delta = gpui::Point::<f32>::zero();
240 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
241 let top = text_bounds.origin.y + vertical_margin;
242 let bottom = text_bounds.lower_left().y - vertical_margin;
243 if event.position.y < top {
244 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
245 }
246 if event.position.y > bottom {
247 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
248 }
249
250 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
251 let left = text_bounds.origin.x + horizontal_margin;
252 let right = text_bounds.upper_right().x - horizontal_margin;
253 if event.position.x < left {
254 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
255 }
256 if event.position.x > right {
257 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
258 }
259
260 editor.select(
261 SelectPhase::Update {
262 position: point_for_position.previous_valid,
263 goal_column: point_for_position.exact_unclipped.column(),
264 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
265 .clamp(&gpui::Point::zero(), &position_map.scroll_max),
266 },
267 cx,
268 );
269 }
270
271 let text_hovered = text_bounds.contains_point(&event.position);
272 let gutter_hovered = gutter_bounds.contains_point(&event.position);
273 editor.set_gutter_hovered(gutter_hovered, cx);
274
275 // Don't trigger hover popover if mouse is hovering over context menu
276 if text_hovered {
277 let point_for_position = position_map.point_for_position(text_bounds, event.position);
278
279 match point_for_position.as_valid() {
280 Some(point) => {
281 update_go_to_definition_link(
282 editor,
283 Some(GoToDefinitionTrigger::Text(point)),
284 modifiers.command,
285 modifiers.shift,
286 cx,
287 );
288 hover_at(editor, Some(point), cx);
289 }
290 None => {
291 update_inlay_link_and_hover_points(
292 &position_map.snapshot,
293 point_for_position,
294 editor,
295 modifiers.command,
296 modifiers.shift,
297 cx,
298 );
299 }
300 }
301
302 true
303 } else {
304 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
305 hover_at(editor, None, cx);
306 gutter_hovered
307 }
308 }
309
310 fn scroll(
311 editor: &mut Editor,
312 event: &ScrollWheelEvent,
313 position_map: &PositionMap,
314 bounds: Bounds<Pixels>,
315 cx: &mut ViewContext<Editor>,
316 ) -> bool {
317 if !bounds.contains_point(&event.position) {
318 return false;
319 }
320
321 let line_height = position_map.line_height;
322 let max_glyph_width = position_map.em_width;
323 let (delta, axis) = match event.delta {
324 gpui::ScrollDelta::Pixels(mut pixels) => {
325 //Trackpad
326 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
327 (pixels, axis)
328 }
329
330 gpui::ScrollDelta::Lines(lines) => {
331 //Not trackpad
332 let pixels = point(lines.x * max_glyph_width, lines.y * line_height);
333 (pixels, None)
334 }
335 };
336
337 let scroll_position = position_map.snapshot.scroll_position();
338 let x = f32::from((scroll_position.x * max_glyph_width - delta.x) / max_glyph_width);
339 let y = f32::from((scroll_position.y * line_height - delta.y) / line_height);
340 let scroll_position = point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
341 editor.scroll(scroll_position, axis, cx);
342
343 true
344 }
345
346 fn paint_background(
347 &self,
348 gutter_bounds: Bounds<Pixels>,
349 text_bounds: Bounds<Pixels>,
350 layout: &LayoutState,
351 cx: &mut ViewContext<Editor>,
352 ) {
353 let bounds = gutter_bounds.union(&text_bounds);
354 let scroll_top =
355 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
356 let gutter_bg = cx.theme().colors().editor_gutter_background;
357 cx.paint_quad(
358 gutter_bounds,
359 Corners::default(),
360 gutter_bg,
361 Edges::default(),
362 transparent_black(),
363 );
364 cx.paint_quad(
365 text_bounds,
366 Corners::default(),
367 self.style.background,
368 Edges::default(),
369 transparent_black(),
370 );
371
372 if let EditorMode::Full = layout.mode {
373 let mut active_rows = layout.active_rows.iter().peekable();
374 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
375 let mut end_row = *start_row;
376 while active_rows.peek().map_or(false, |r| {
377 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
378 }) {
379 active_rows.next().unwrap();
380 end_row += 1;
381 }
382
383 if !contains_non_empty_selection {
384 let origin = point(
385 bounds.origin.x,
386 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
387 - scroll_top,
388 );
389 let size = size(
390 bounds.size.width,
391 layout.position_map.line_height * (end_row - start_row + 1) as f32,
392 );
393 let active_line_bg = cx.theme().colors().editor_active_line_background;
394 cx.paint_quad(
395 Bounds { origin, size },
396 Corners::default(),
397 active_line_bg,
398 Edges::default(),
399 transparent_black(),
400 );
401 }
402 }
403
404 if let Some(highlighted_rows) = &layout.highlighted_rows {
405 let origin = point(
406 bounds.origin.x,
407 bounds.origin.y
408 + (layout.position_map.line_height * highlighted_rows.start as f32)
409 - scroll_top,
410 );
411 let size = size(
412 bounds.size.width,
413 layout.position_map.line_height * highlighted_rows.len() as f32,
414 );
415 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
416 cx.paint_quad(
417 Bounds { origin, size },
418 Corners::default(),
419 highlighted_line_bg,
420 Edges::default(),
421 transparent_black(),
422 );
423 }
424
425 let scroll_left =
426 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
427
428 for (wrap_position, active) in layout.wrap_guides.iter() {
429 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
430 - scroll_left;
431
432 if x < text_bounds.origin.x
433 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
434 {
435 continue;
436 }
437
438 let color = if *active {
439 cx.theme().colors().editor_active_wrap_guide
440 } else {
441 cx.theme().colors().editor_wrap_guide
442 };
443 cx.paint_quad(
444 Bounds {
445 origin: point(x, text_bounds.origin.y),
446 size: size(px(1.), text_bounds.size.height),
447 },
448 Corners::default(),
449 color,
450 Edges::default(),
451 transparent_black(),
452 );
453 }
454 }
455 }
456
457 fn paint_gutter(
458 &mut self,
459 bounds: Bounds<Pixels>,
460 layout: &mut LayoutState,
461 editor: &mut Editor,
462 cx: &mut ViewContext<Editor>,
463 ) {
464 let line_height = layout.position_map.line_height;
465
466 let scroll_position = layout.position_map.snapshot.scroll_position();
467 let scroll_top = scroll_position.y * line_height;
468
469 let show_gutter = matches!(
470 ProjectSettings::get_global(cx).git.git_gutter,
471 Some(GitGutterSetting::TrackedFiles)
472 );
473
474 if show_gutter {
475 Self::paint_diff_hunks(bounds, layout, cx);
476 }
477
478 for (ix, line) in layout.line_number_layouts.iter().enumerate() {
479 if let Some(line) = line {
480 let line_origin = bounds.origin
481 + point(
482 bounds.size.width - line.width - layout.gutter_padding,
483 ix as f32 * line_height - (scroll_top % line_height),
484 );
485
486 line.paint(line_origin, line_height, cx);
487 }
488 }
489
490 // todo!("fold indicators")
491 // for (ix, fold_indicator) in layout.fold_indicators.iter_mut().enumerate() {
492 // if let Some(indicator) = fold_indicator.as_mut() {
493 // let position = point(
494 // bounds.width() - layout.gutter_padding,
495 // ix as f32 * line_height - (scroll_top % line_height),
496 // );
497 // let centering_offset = point(
498 // (layout.gutter_padding + layout.gutter_margin - indicator.size().x) / 2.,
499 // (line_height - indicator.size().y) / 2.,
500 // );
501
502 // let indicator_origin = bounds.origin + position + centering_offset;
503
504 // indicator.paint(indicator_origin, visible_bounds, editor, cx);
505 // }
506 // }
507
508 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
509 let available_space = size(
510 AvailableSpace::MinContent,
511 AvailableSpace::Definite(line_height),
512 );
513 let indicator_size = indicator.element.measure(available_space, editor, cx);
514 let mut x = Pixels::ZERO;
515 let mut y = indicator.row as f32 * line_height - scroll_top;
516 // Center indicator.
517 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
518 y += (line_height - indicator_size.height) / 2.;
519 indicator
520 .element
521 .draw(bounds.origin + point(x, y), available_space, editor, cx);
522 }
523 }
524
525 fn paint_diff_hunks(
526 bounds: Bounds<Pixels>,
527 layout: &LayoutState,
528 cx: &mut ViewContext<Editor>,
529 ) {
530 // todo!()
531 // let diff_style = &theme::current(cx).editor.diff.clone();
532 // let line_height = layout.position_map.line_height;
533
534 // let scroll_position = layout.position_map.snapshot.scroll_position();
535 // let scroll_top = scroll_position.y * line_height;
536
537 // for hunk in &layout.display_hunks {
538 // let (display_row_range, status) = match hunk {
539 // //TODO: This rendering is entirely a horrible hack
540 // &DisplayDiffHunk::Folded { display_row: row } => {
541 // let start_y = row as f32 * line_height - scroll_top;
542 // let end_y = start_y + line_height;
543
544 // let width = diff_style.removed_width_em * line_height;
545 // let highlight_origin = bounds.origin + point(-width, start_y);
546 // let highlight_size = point(width * 2., end_y - start_y);
547 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
548
549 // cx.paint_quad(Quad {
550 // bounds: highlight_bounds,
551 // background: Some(diff_style.modified),
552 // border: Border::new(0., Color::transparent_black()).into(),
553 // corner_radii: (1. * line_height).into(),
554 // });
555
556 // continue;
557 // }
558
559 // DisplayDiffHunk::Unfolded {
560 // display_row_range,
561 // status,
562 // } => (display_row_range, status),
563 // };
564
565 // let color = match status {
566 // DiffHunkStatus::Added => diff_style.inserted,
567 // DiffHunkStatus::Modified => diff_style.modified,
568
569 // //TODO: This rendering is entirely a horrible hack
570 // DiffHunkStatus::Removed => {
571 // let row = display_row_range.start;
572
573 // let offset = line_height / 2.;
574 // let start_y = row as f32 * line_height - offset - scroll_top;
575 // let end_y = start_y + line_height;
576
577 // let width = diff_style.removed_width_em * line_height;
578 // let highlight_origin = bounds.origin + point(-width, start_y);
579 // let highlight_size = point(width * 2., end_y - start_y);
580 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
581
582 // cx.paint_quad(Quad {
583 // bounds: highlight_bounds,
584 // background: Some(diff_style.deleted),
585 // border: Border::new(0., Color::transparent_black()).into(),
586 // corner_radii: (1. * line_height).into(),
587 // });
588
589 // continue;
590 // }
591 // };
592
593 // let start_row = display_row_range.start;
594 // let end_row = display_row_range.end;
595
596 // let start_y = start_row as f32 * line_height - scroll_top;
597 // let end_y = end_row as f32 * line_height - scroll_top;
598
599 // let width = diff_style.width_em * line_height;
600 // let highlight_origin = bounds.origin + point(-width, start_y);
601 // let highlight_size = point(width * 2., end_y - start_y);
602 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
603
604 // cx.paint_quad(Quad {
605 // bounds: highlight_bounds,
606 // background: Some(color),
607 // border: Border::new(0., Color::transparent_black()).into(),
608 // corner_radii: (diff_style.corner_radius * line_height).into(),
609 // });
610 // }
611 }
612
613 fn paint_text(
614 &mut self,
615 bounds: Bounds<Pixels>,
616 layout: &mut LayoutState,
617 editor: &mut Editor,
618 cx: &mut ViewContext<Editor>,
619 ) {
620 let scroll_position = layout.position_map.snapshot.scroll_position();
621 let start_row = layout.visible_display_row_range.start;
622 let scroll_top = scroll_position.y * layout.position_map.line_height;
623 let max_glyph_width = layout.position_map.em_width;
624 let scroll_left = scroll_position.x * max_glyph_width;
625 let content_origin = bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
626 let line_end_overshoot = 0.15 * layout.position_map.line_height;
627 let whitespace_setting = editor.buffer.read(cx).settings_at(0, cx).show_whitespaces;
628
629 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
630 // todo!("cursor region")
631 // cx.scene().push_cursor_region(CursorRegion {
632 // bounds,
633 // style: if !editor.link_go_to_definition_state.definitions.is_empty {
634 // CursorStyle::PointingHand
635 // } else {
636 // CursorStyle::IBeam
637 // },
638 // });
639
640 // todo!("fold ranges")
641 // let fold_corner_radius =
642 // self.style.folds.ellipses.corner_radius_factor * layout.position_map.line_height;
643 // for (id, range, color) in layout.fold_ranges.iter() {
644 // self.paint_highlighted_range(
645 // range.clone(),
646 // *color,
647 // fold_corner_radius,
648 // fold_corner_radius * 2.,
649 // layout,
650 // content_origin,
651 // scroll_top,
652 // scroll_left,
653 // bounds,
654 // cx,
655 // );
656
657 // for bound in range_to_bounds(
658 // &range,
659 // content_origin,
660 // scroll_left,
661 // scroll_top,
662 // &layout.visible_display_row_range,
663 // line_end_overshoot,
664 // &layout.position_map,
665 // ) {
666 // cx.scene().push_cursor_region(CursorRegion {
667 // bounds: bound,
668 // style: CursorStyle::PointingHand,
669 // });
670
671 // let display_row = range.start.row();
672
673 // let buffer_row = DisplayPoint::new(display_row, 0)
674 // .to_point(&layout.position_map.snapshot.display_snapshot)
675 // .row;
676
677 // let view_id = cx.view_id();
678 // cx.scene().push_mouse_region(
679 // MouseRegion::new::<FoldMarkers>(view_id, *id as usize, bound)
680 // .on_click(MouseButton::Left, move |_, editor: &mut Editor, cx| {
681 // editor.unfold_at(&UnfoldAt { buffer_row }, cx)
682 // })
683 // .with_notify_on_hover(true)
684 // .with_notify_on_click(true),
685 // )
686 // }
687 // }
688
689 for (range, color) in &layout.highlighted_ranges {
690 self.paint_highlighted_range(
691 range.clone(),
692 *color,
693 Pixels::ZERO,
694 line_end_overshoot,
695 layout,
696 content_origin,
697 scroll_top,
698 scroll_left,
699 bounds,
700 cx,
701 );
702 }
703
704 let mut cursors = SmallVec::<[Cursor; 32]>::new();
705 let corner_radius = 0.15 * layout.position_map.line_height;
706 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
707
708 for (selection_style, selections) in &layout.selections {
709 for selection in selections {
710 self.paint_highlighted_range(
711 selection.range.clone(),
712 selection_style.selection,
713 corner_radius,
714 corner_radius * 2.,
715 layout,
716 content_origin,
717 scroll_top,
718 scroll_left,
719 bounds,
720 cx,
721 );
722
723 if selection.is_local && !selection.range.is_empty() {
724 invisible_display_ranges.push(selection.range.clone());
725 }
726
727 if !selection.is_local || editor.show_local_cursors(cx) {
728 let cursor_position = selection.head;
729 if layout
730 .visible_display_row_range
731 .contains(&cursor_position.row())
732 {
733 let cursor_row_layout = &layout.position_map.line_layouts
734 [(cursor_position.row() - start_row) as usize]
735 .line;
736 let cursor_column = cursor_position.column() as usize;
737
738 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
739 let mut block_width = cursor_row_layout.x_for_index(cursor_column + 1)
740 - cursor_character_x;
741 if block_width == Pixels::ZERO {
742 block_width = layout.position_map.em_width;
743 }
744 let block_text = if let CursorShape::Block = selection.cursor_shape {
745 layout
746 .position_map
747 .snapshot
748 .chars_at(cursor_position)
749 .next()
750 .and_then(|(character, _)| {
751 let text = character.to_string();
752 cx.text_system()
753 .layout_text(
754 &text,
755 cursor_row_layout.font_size,
756 &[TextRun {
757 len: text.len(),
758 font: self.style.text.font(),
759 color: self.style.background,
760 underline: None,
761 }],
762 None,
763 )
764 .unwrap()
765 .pop()
766 })
767 } else {
768 None
769 };
770
771 let x = cursor_character_x - scroll_left;
772 let y = cursor_position.row() as f32 * layout.position_map.line_height
773 - scroll_top;
774 if selection.is_newest {
775 editor.pixel_position_of_newest_cursor = Some(point(
776 bounds.origin.x + x + block_width / 2.,
777 bounds.origin.y + y + layout.position_map.line_height / 2.,
778 ));
779 }
780 cursors.push(Cursor {
781 color: selection_style.cursor,
782 block_width,
783 origin: point(x, y),
784 line_height: layout.position_map.line_height,
785 shape: selection.cursor_shape,
786 block_text,
787 });
788 }
789 }
790 }
791 }
792
793 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
794 let row = start_row + ix as u32;
795 line_with_invisibles.draw(
796 layout,
797 row,
798 scroll_top,
799 content_origin,
800 scroll_left,
801 whitespace_setting,
802 &invisible_display_ranges,
803 cx,
804 )
805 }
806
807 cx.with_z_index(0, |cx| {
808 for cursor in cursors {
809 cursor.paint(content_origin, cx);
810 }
811 });
812
813 if let Some((position, context_menu)) = layout.context_menu.as_mut() {
814 cx.with_z_index(1, |cx| {
815 let line_height = self.style.text.line_height_in_pixels(cx.rem_size());
816 let available_space = size(
817 AvailableSpace::MinContent,
818 AvailableSpace::Definite(
819 (12. * line_height).min((bounds.size.height - line_height) / 2.),
820 ),
821 );
822 let context_menu_size = context_menu.measure(available_space, editor, cx);
823
824 let cursor_row_layout = &layout.position_map.line_layouts
825 [(position.row() - start_row) as usize]
826 .line;
827 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_left;
828 let y =
829 (position.row() + 1) as f32 * layout.position_map.line_height - scroll_top;
830 let mut list_origin = content_origin + point(x, y);
831 let list_width = context_menu_size.width;
832 let list_height = context_menu_size.height;
833
834 // Snap the right edge of the list to the right edge of the window if
835 // its horizontal bounds overflow.
836 if list_origin.x + list_width > cx.viewport_size().width {
837 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
838 }
839
840 if list_origin.y + list_height > bounds.lower_right().y {
841 list_origin.y -= layout.position_map.line_height - list_height;
842 }
843
844 context_menu.draw(list_origin, available_space, editor, cx);
845 })
846 }
847
848 // if let Some((position, hover_popovers)) = layout.hover_popovers.as_mut() {
849 // cx.scene().push_stacking_context(None, None);
850
851 // // This is safe because we check on layout whether the required row is available
852 // let hovered_row_layout =
853 // &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
854
855 // // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
856 // // height. This is the size we will use to decide whether to render popovers above or below
857 // // the hovered line.
858 // let first_size = hover_popovers[0].size();
859 // let height_to_reserve = first_size.y
860 // + 1.5 * MIN_POPOVER_LINE_HEIGHT as f32 * layout.position_map.line_height;
861
862 // // Compute Hovered Point
863 // let x = hovered_row_layout.x_for_index(position.column() as usize) - scroll_left;
864 // let y = position.row() as f32 * layout.position_map.line_height - scroll_top;
865 // let hovered_point = content_origin + point(x, y);
866
867 // if hovered_point.y - height_to_reserve > 0.0 {
868 // // There is enough space above. Render popovers above the hovered point
869 // let mut current_y = hovered_point.y;
870 // for hover_popover in hover_popovers {
871 // let size = hover_popover.size();
872 // let mut popover_origin = point(hovered_point.x, current_y - size.y);
873
874 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
875 // if x_out_of_bounds < 0.0 {
876 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
877 // }
878
879 // hover_popover.paint(
880 // popover_origin,
881 // Bounds::<Pixels>::from_points(
882 // gpui::Point::<Pixels>::zero(),
883 // point(f32::MAX, f32::MAX),
884 // ), // Let content bleed outside of editor
885 // editor,
886 // cx,
887 // );
888
889 // current_y = popover_origin.y - HOVER_POPOVER_GAP;
890 // }
891 // } else {
892 // // There is not enough space above. Render popovers below the hovered point
893 // let mut current_y = hovered_point.y + layout.position_map.line_height;
894 // for hover_popover in hover_popovers {
895 // let size = hover_popover.size();
896 // let mut popover_origin = point(hovered_point.x, current_y);
897
898 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
899 // if x_out_of_bounds < 0.0 {
900 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
901 // }
902
903 // hover_popover.paint(
904 // popover_origin,
905 // Bounds::<Pixels>::from_points(
906 // gpui::Point::<Pixels>::zero(),
907 // point(f32::MAX, f32::MAX),
908 // ), // Let content bleed outside of editor
909 // editor,
910 // cx,
911 // );
912
913 // current_y = popover_origin.y + size.y + HOVER_POPOVER_GAP;
914 // }
915 // }
916
917 // cx.scene().pop_stacking_context();
918 // }
919 })
920 }
921
922 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
923 bounds.upper_right().x - self.style.scrollbar_width
924 }
925
926 // fn paint_scrollbar(
927 // &mut self,
928 // bounds: Bounds<Pixels>,
929 // layout: &mut LayoutState,
930 // editor: &Editor,
931 // cx: &mut ViewContext<Editor>,
932 // ) {
933 // enum ScrollbarMouseHandlers {}
934 // if layout.mode != EditorMode::Full {
935 // return;
936 // }
937
938 // let style = &self.style.theme.scrollbar;
939
940 // let top = bounds.min_y;
941 // let bottom = bounds.max_y;
942 // let right = bounds.max_x;
943 // let left = self.scrollbar_left(&bounds);
944 // let row_range = &layout.scrollbar_row_range;
945 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
946
947 // let mut height = bounds.height();
948 // let mut first_row_y_offset = 0.0;
949
950 // // Impose a minimum height on the scrollbar thumb
951 // let row_height = height / max_row;
952 // let min_thumb_height =
953 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
954 // let thumb_height = (row_range.end - row_range.start) * row_height;
955 // if thumb_height < min_thumb_height {
956 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
957 // height -= min_thumb_height - thumb_height;
958 // }
959
960 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
961
962 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
963 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
964 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
965 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
966
967 // if layout.show_scrollbars {
968 // cx.paint_quad(Quad {
969 // bounds: track_bounds,
970 // border: style.track.border.into(),
971 // background: style.track.background_color,
972 // ..Default::default()
973 // });
974 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
975 // let theme = theme::current(cx);
976 // let scrollbar_theme = &theme.editor.scrollbar;
977 // if layout.is_singleton && scrollbar_settings.selections {
978 // let start_anchor = Anchor::min();
979 // let end_anchor = Anchor::max;
980 // let color = scrollbar_theme.selections;
981 // let border = Border {
982 // width: 1.,
983 // color: style.thumb.border.color,
984 // overlay: false,
985 // top: false,
986 // right: true,
987 // bottom: false,
988 // left: true,
989 // };
990 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
991 // let start_y = y_for_row(start.row() as f32);
992 // let mut end_y = y_for_row(end.row() as f32);
993 // if end_y - start_y < 1. {
994 // end_y = start_y + 1.;
995 // }
996 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
997
998 // cx.paint_quad(Quad {
999 // bounds,
1000 // background: Some(color),
1001 // border: border.into(),
1002 // corner_radii: style.thumb.corner_radii.into(),
1003 // })
1004 // };
1005 // let background_ranges = editor
1006 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1007 // start_anchor..end_anchor,
1008 // &layout.position_map.snapshot,
1009 // 50000,
1010 // );
1011 // for row in background_ranges {
1012 // let start = row.start();
1013 // let end = row.end();
1014 // push_region(*start, *end);
1015 // }
1016 // }
1017
1018 // if layout.is_singleton && scrollbar_settings.git_diff {
1019 // let diff_style = scrollbar_theme.git.clone();
1020 // for hunk in layout
1021 // .position_map
1022 // .snapshot
1023 // .buffer_snapshot
1024 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1025 // {
1026 // let start_display = Point::new(hunk.buffer_range.start, 0)
1027 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1028 // let end_display = Point::new(hunk.buffer_range.end, 0)
1029 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1030 // let start_y = y_for_row(start_display.row() as f32);
1031 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1032 // y_for_row((end_display.row() + 1) as f32)
1033 // } else {
1034 // y_for_row((end_display.row()) as f32)
1035 // };
1036
1037 // if end_y - start_y < 1. {
1038 // end_y = start_y + 1.;
1039 // }
1040 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1041
1042 // let color = match hunk.status() {
1043 // DiffHunkStatus::Added => diff_style.inserted,
1044 // DiffHunkStatus::Modified => diff_style.modified,
1045 // DiffHunkStatus::Removed => diff_style.deleted,
1046 // };
1047
1048 // let border = Border {
1049 // width: 1.,
1050 // color: style.thumb.border.color,
1051 // overlay: false,
1052 // top: false,
1053 // right: true,
1054 // bottom: false,
1055 // left: true,
1056 // };
1057
1058 // cx.paint_quad(Quad {
1059 // bounds,
1060 // background: Some(color),
1061 // border: border.into(),
1062 // corner_radii: style.thumb.corner_radii.into(),
1063 // })
1064 // }
1065 // }
1066
1067 // cx.paint_quad(Quad {
1068 // bounds: thumb_bounds,
1069 // border: style.thumb.border.into(),
1070 // background: style.thumb.background_color,
1071 // corner_radii: style.thumb.corner_radii.into(),
1072 // });
1073 // }
1074
1075 // cx.scene().push_cursor_region(CursorRegion {
1076 // bounds: track_bounds,
1077 // style: CursorStyle::Arrow,
1078 // });
1079 // let region_id = cx.view_id();
1080 // cx.scene().push_mouse_region(
1081 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1082 // .on_move(move |event, editor: &mut Editor, cx| {
1083 // if event.pressed_button.is_none() {
1084 // editor.scroll_manager.show_scrollbar(cx);
1085 // }
1086 // })
1087 // .on_down(MouseButton::Left, {
1088 // let row_range = row_range.clone();
1089 // move |event, editor: &mut Editor, cx| {
1090 // let y = event.position.y;
1091 // if y < thumb_top || thumb_bottom < y {
1092 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1093 // let top_row = center_row
1094 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1095 // let mut position = editor.scroll_position(cx);
1096 // position.set_y(top_row as f32);
1097 // editor.set_scroll_position(position, cx);
1098 // } else {
1099 // editor.scroll_manager.show_scrollbar(cx);
1100 // }
1101 // }
1102 // })
1103 // .on_drag(MouseButton::Left, {
1104 // move |event, editor: &mut Editor, cx| {
1105 // if event.end {
1106 // return;
1107 // }
1108
1109 // let y = event.prev_mouse_position.y;
1110 // let new_y = event.position.y;
1111 // if thumb_top < y && y < thumb_bottom {
1112 // let mut position = editor.scroll_position(cx);
1113 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1114 // if position.y < 0.0 {
1115 // position.set_y(0.);
1116 // }
1117 // editor.set_scroll_position(position, cx);
1118 // }
1119 // }
1120 // }),
1121 // );
1122 // }
1123
1124 #[allow(clippy::too_many_arguments)]
1125 fn paint_highlighted_range(
1126 &self,
1127 range: Range<DisplayPoint>,
1128 color: Hsla,
1129 corner_radius: Pixels,
1130 line_end_overshoot: Pixels,
1131 layout: &LayoutState,
1132 content_origin: gpui::Point<Pixels>,
1133 scroll_top: Pixels,
1134 scroll_left: Pixels,
1135 bounds: Bounds<Pixels>,
1136 cx: &mut ViewContext<Editor>,
1137 ) {
1138 let start_row = layout.visible_display_row_range.start;
1139 let end_row = layout.visible_display_row_range.end;
1140 if range.start != range.end {
1141 let row_range = if range.end.column() == 0 {
1142 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1143 } else {
1144 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1145 };
1146
1147 let highlighted_range = HighlightedRange {
1148 color,
1149 line_height: layout.position_map.line_height,
1150 corner_radius,
1151 start_y: content_origin.y
1152 + row_range.start as f32 * layout.position_map.line_height
1153 - scroll_top,
1154 lines: row_range
1155 .into_iter()
1156 .map(|row| {
1157 let line_layout =
1158 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1159 HighlightedRangeLine {
1160 start_x: if row == range.start.row() {
1161 content_origin.x
1162 + line_layout.x_for_index(range.start.column() as usize)
1163 - scroll_left
1164 } else {
1165 content_origin.x - scroll_left
1166 },
1167 end_x: if row == range.end.row() {
1168 content_origin.x
1169 + line_layout.x_for_index(range.end.column() as usize)
1170 - scroll_left
1171 } else {
1172 content_origin.x + line_layout.width + line_end_overshoot
1173 - scroll_left
1174 },
1175 }
1176 })
1177 .collect(),
1178 };
1179
1180 highlighted_range.paint(bounds, cx);
1181 }
1182 }
1183
1184 fn paint_blocks(
1185 &mut self,
1186 bounds: Bounds<Pixels>,
1187 layout: &mut LayoutState,
1188 editor: &mut Editor,
1189 cx: &mut ViewContext<Editor>,
1190 ) {
1191 let scroll_position = layout.position_map.snapshot.scroll_position();
1192 let scroll_left = scroll_position.x * layout.position_map.em_width;
1193 let scroll_top = scroll_position.y * layout.position_map.line_height;
1194
1195 for block in &mut layout.blocks {
1196 let mut origin = bounds.origin
1197 + point(
1198 Pixels::ZERO,
1199 block.row as f32 * layout.position_map.line_height - scroll_top,
1200 );
1201 if !matches!(block.style, BlockStyle::Sticky) {
1202 origin += point(-scroll_left, Pixels::ZERO);
1203 }
1204 block
1205 .element
1206 .draw(origin, block.available_space, editor, cx);
1207 }
1208 }
1209
1210 fn column_pixels(&self, column: usize, cx: &ViewContext<Editor>) -> Pixels {
1211 let style = &self.style;
1212 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1213 let layout = cx
1214 .text_system()
1215 .layout_text(
1216 " ".repeat(column).as_str(),
1217 font_size,
1218 &[TextRun {
1219 len: column,
1220 font: style.text.font(),
1221 color: Hsla::default(),
1222 underline: None,
1223 }],
1224 None,
1225 )
1226 .unwrap();
1227
1228 layout[0].width
1229 }
1230
1231 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &ViewContext<Editor>) -> Pixels {
1232 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1233 self.column_pixels(digit_count, cx)
1234 }
1235
1236 //Folds contained in a hunk are ignored apart from shrinking visual size
1237 //If a fold contains any hunks then that fold line is marked as modified
1238 fn layout_git_gutters(
1239 &self,
1240 display_rows: Range<u32>,
1241 snapshot: &EditorSnapshot,
1242 ) -> Vec<DisplayDiffHunk> {
1243 let buffer_snapshot = &snapshot.buffer_snapshot;
1244
1245 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1246 .to_point(snapshot)
1247 .row;
1248 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1249 .to_point(snapshot)
1250 .row;
1251
1252 buffer_snapshot
1253 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1254 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1255 .dedup()
1256 .collect()
1257 }
1258
1259 fn calculate_relative_line_numbers(
1260 &self,
1261 snapshot: &EditorSnapshot,
1262 rows: &Range<u32>,
1263 relative_to: Option<u32>,
1264 ) -> HashMap<u32, u32> {
1265 let mut relative_rows: HashMap<u32, u32> = Default::default();
1266 let Some(relative_to) = relative_to else {
1267 return relative_rows;
1268 };
1269
1270 let start = rows.start.min(relative_to);
1271 let end = rows.end.max(relative_to);
1272
1273 let buffer_rows = snapshot
1274 .buffer_rows(start)
1275 .take(1 + (end - start) as usize)
1276 .collect::<Vec<_>>();
1277
1278 let head_idx = relative_to - start;
1279 let mut delta = 1;
1280 let mut i = head_idx + 1;
1281 while i < buffer_rows.len() as u32 {
1282 if buffer_rows[i as usize].is_some() {
1283 if rows.contains(&(i + start)) {
1284 relative_rows.insert(i + start, delta);
1285 }
1286 delta += 1;
1287 }
1288 i += 1;
1289 }
1290 delta = 1;
1291 i = head_idx.min(buffer_rows.len() as u32 - 1);
1292 while i > 0 && buffer_rows[i as usize].is_none() {
1293 i -= 1;
1294 }
1295
1296 while i > 0 {
1297 i -= 1;
1298 if buffer_rows[i as usize].is_some() {
1299 if rows.contains(&(i + start)) {
1300 relative_rows.insert(i + start, delta);
1301 }
1302 delta += 1;
1303 }
1304 }
1305
1306 relative_rows
1307 }
1308
1309 fn layout_line_numbers(
1310 &self,
1311 rows: Range<u32>,
1312 active_rows: &BTreeMap<u32, bool>,
1313 newest_selection_head: DisplayPoint,
1314 is_singleton: bool,
1315 snapshot: &EditorSnapshot,
1316 cx: &ViewContext<Editor>,
1317 ) -> (
1318 Vec<Option<gpui::Line>>,
1319 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1320 ) {
1321 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1322 let include_line_numbers = snapshot.mode == EditorMode::Full;
1323 let mut line_number_layouts = Vec::with_capacity(rows.len());
1324 let mut fold_statuses = Vec::with_capacity(rows.len());
1325 let mut line_number = String::new();
1326 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1327 let relative_to = if is_relative {
1328 Some(newest_selection_head.row())
1329 } else {
1330 None
1331 };
1332
1333 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1334
1335 for (ix, row) in snapshot
1336 .buffer_rows(rows.start)
1337 .take((rows.end - rows.start) as usize)
1338 .enumerate()
1339 {
1340 let display_row = rows.start + ix as u32;
1341 let (active, color) = if active_rows.contains_key(&display_row) {
1342 (true, cx.theme().colors().editor_active_line_number)
1343 } else {
1344 (false, cx.theme().colors().editor_line_number)
1345 };
1346 if let Some(buffer_row) = row {
1347 if include_line_numbers {
1348 line_number.clear();
1349 let default_number = buffer_row + 1;
1350 let number = relative_rows
1351 .get(&(ix as u32 + rows.start))
1352 .unwrap_or(&default_number);
1353 write!(&mut line_number, "{}", number).unwrap();
1354 let run = TextRun {
1355 len: line_number.len(),
1356 font: self.style.text.font(),
1357 color,
1358 underline: None,
1359 };
1360 let layout = cx
1361 .text_system()
1362 .layout_text(&line_number, font_size, &[run], None)
1363 .unwrap()
1364 .pop()
1365 .unwrap();
1366 line_number_layouts.push(Some(layout));
1367 fold_statuses.push(
1368 is_singleton
1369 .then(|| {
1370 snapshot
1371 .fold_for_line(buffer_row)
1372 .map(|fold_status| (fold_status, buffer_row, active))
1373 })
1374 .flatten(),
1375 )
1376 }
1377 } else {
1378 fold_statuses.push(None);
1379 line_number_layouts.push(None);
1380 }
1381 }
1382
1383 (line_number_layouts, fold_statuses)
1384 }
1385
1386 fn layout_lines(
1387 &mut self,
1388 rows: Range<u32>,
1389 line_number_layouts: &[Option<Line>],
1390 snapshot: &EditorSnapshot,
1391 cx: &ViewContext<Editor>,
1392 ) -> Vec<LineWithInvisibles> {
1393 if rows.start >= rows.end {
1394 return Vec::new();
1395 }
1396
1397 // When the editor is empty and unfocused, then show the placeholder.
1398 if snapshot.is_empty() {
1399 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1400 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1401 let placeholder_text = snapshot.placeholder_text();
1402 let placeholder_lines = placeholder_text
1403 .as_ref()
1404 .map_or("", AsRef::as_ref)
1405 .split('\n')
1406 .skip(rows.start as usize)
1407 .chain(iter::repeat(""))
1408 .take(rows.len());
1409 placeholder_lines
1410 .map(|line| {
1411 let run = TextRun {
1412 len: line.len(),
1413 font: self.style.text.font(),
1414 color: placeholder_color,
1415 underline: Default::default(),
1416 };
1417 cx.text_system()
1418 .layout_text(line, font_size, &[run], None)
1419 .unwrap()
1420 .pop()
1421 .unwrap()
1422 })
1423 .map(|line| LineWithInvisibles {
1424 line,
1425 invisibles: Vec::new(),
1426 })
1427 .collect()
1428 } else {
1429 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1430 LineWithInvisibles::from_chunks(
1431 chunks,
1432 &self.style.text,
1433 MAX_LINE_LEN,
1434 rows.len() as usize,
1435 line_number_layouts,
1436 snapshot.mode,
1437 cx,
1438 )
1439 }
1440 }
1441
1442 fn compute_layout(
1443 &mut self,
1444 editor: &mut Editor,
1445 cx: &mut ViewContext<'_, Editor>,
1446 mut bounds: Bounds<Pixels>,
1447 ) -> LayoutState {
1448 // let mut size = constraint.max;
1449 // if size.x.is_infinite() {
1450 // unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
1451 // }
1452
1453 let snapshot = editor.snapshot(cx);
1454 let style = self.style.clone();
1455 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1456 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1457 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1458 let em_width = cx
1459 .text_system()
1460 .typographic_bounds(font_id, font_size, 'm')
1461 .unwrap()
1462 .size
1463 .width;
1464 let em_advance = cx
1465 .text_system()
1466 .advance(font_id, font_size, 'm')
1467 .unwrap()
1468 .width;
1469
1470 let gutter_padding;
1471 let gutter_width;
1472 let gutter_margin;
1473 if snapshot.show_gutter {
1474 let descent = cx.text_system().descent(font_id, font_size).unwrap();
1475
1476 let gutter_padding_factor = 3.5;
1477 gutter_padding = (em_width * gutter_padding_factor).round();
1478 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1479 gutter_margin = -descent;
1480 } else {
1481 gutter_padding = Pixels::ZERO;
1482 gutter_width = Pixels::ZERO;
1483 gutter_margin = Pixels::ZERO;
1484 };
1485
1486 editor.gutter_width = gutter_width;
1487 let text_width = bounds.size.width - gutter_width;
1488 let overscroll = size(em_width, px(0.));
1489 let snapshot = {
1490 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1491
1492 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1493 let wrap_width = match editor.soft_wrap_mode(cx) {
1494 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1495 SoftWrap::EditorWidth => editor_width,
1496 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1497 };
1498
1499 if editor.set_wrap_width(Some(wrap_width), cx) {
1500 editor.snapshot(cx)
1501 } else {
1502 snapshot
1503 }
1504 };
1505
1506 let wrap_guides = editor
1507 .wrap_guides(cx)
1508 .iter()
1509 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1510 .collect::<SmallVec<[_; 2]>>();
1511
1512 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1513 // todo!("this should happen during layout")
1514 let editor_mode = snapshot.mode;
1515 if let EditorMode::AutoHeight { max_lines } = editor_mode {
1516 todo!()
1517 // size.set_y(
1518 // scroll_height
1519 // .min(constraint.max_along(Axis::Vertical))
1520 // .max(constraint.min_along(Axis::Vertical))
1521 // .max(line_height)
1522 // .min(line_height * max_lines as f32),
1523 // )
1524 } else if let EditorMode::SingleLine = editor_mode {
1525 bounds.size.height = line_height.min(bounds.size.height);
1526 }
1527 // todo!()
1528 // else if size.y.is_infinite() {
1529 // // size.set_y(scroll_height);
1530 // }
1531 //
1532 let gutter_size = size(gutter_width, bounds.size.height);
1533 let text_size = size(text_width, bounds.size.height);
1534
1535 let autoscroll_horizontally =
1536 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1537 let mut snapshot = editor.snapshot(cx);
1538
1539 let scroll_position = snapshot.scroll_position();
1540 // The scroll position is a fractional point, the whole number of which represents
1541 // the top of the window in terms of display rows.
1542 let start_row = scroll_position.y as u32;
1543 let height_in_lines = f32::from(bounds.size.height / line_height);
1544 let max_row = snapshot.max_point().row();
1545
1546 // Add 1 to ensure selections bleed off screen
1547 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1548
1549 let start_anchor = if start_row == 0 {
1550 Anchor::min()
1551 } else {
1552 snapshot
1553 .buffer_snapshot
1554 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1555 };
1556 let end_anchor = if end_row > max_row {
1557 Anchor::max()
1558 } else {
1559 snapshot
1560 .buffer_snapshot
1561 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1562 };
1563
1564 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1565 let mut active_rows = BTreeMap::new();
1566 let mut fold_ranges = Vec::new();
1567 let is_singleton = editor.is_singleton(cx);
1568
1569 let highlighted_rows = editor.highlighted_rows();
1570 let highlighted_ranges = editor.background_highlights_in_range(
1571 start_anchor..end_anchor,
1572 &snapshot.display_snapshot,
1573 cx.theme().colors(),
1574 );
1575
1576 fold_ranges.extend(
1577 snapshot
1578 .folds_in_range(start_anchor..end_anchor)
1579 .map(|anchor| {
1580 let start = anchor.start.to_point(&snapshot.buffer_snapshot);
1581 (
1582 start.row,
1583 start.to_display_point(&snapshot.display_snapshot)
1584 ..anchor.end.to_display_point(&snapshot),
1585 )
1586 }),
1587 );
1588
1589 let mut newest_selection_head = None;
1590
1591 if editor.show_local_selections {
1592 let mut local_selections: Vec<Selection<Point>> = editor
1593 .selections
1594 .disjoint_in_range(start_anchor..end_anchor, cx);
1595 local_selections.extend(editor.selections.pending(cx));
1596 let mut layouts = Vec::new();
1597 let newest = editor.selections.newest(cx);
1598 for selection in local_selections.drain(..) {
1599 let is_empty = selection.start == selection.end;
1600 let is_newest = selection == newest;
1601
1602 let layout = SelectionLayout::new(
1603 selection,
1604 editor.selections.line_mode,
1605 editor.cursor_shape,
1606 &snapshot.display_snapshot,
1607 is_newest,
1608 true,
1609 );
1610 if is_newest {
1611 newest_selection_head = Some(layout.head);
1612 }
1613
1614 for row in cmp::max(layout.active_rows.start, start_row)
1615 ..=cmp::min(layout.active_rows.end, end_row)
1616 {
1617 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1618 *contains_non_empty_selection |= !is_empty;
1619 }
1620 layouts.push(layout);
1621 }
1622
1623 selections.push((style.local_player, layouts));
1624 }
1625
1626 if let Some(collaboration_hub) = &editor.collaboration_hub {
1627 // When following someone, render the local selections in their color.
1628 if let Some(leader_id) = editor.leader_peer_id {
1629 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1630 if let Some(participant_index) = collaboration_hub
1631 .user_participant_indices(cx)
1632 .get(&collaborator.user_id)
1633 {
1634 if let Some((local_selection_style, _)) = selections.first_mut() {
1635 *local_selection_style = cx
1636 .theme()
1637 .players()
1638 .color_for_participant(participant_index.0);
1639 }
1640 }
1641 }
1642 }
1643
1644 let mut remote_selections = HashMap::default();
1645 for selection in snapshot.remote_selections_in_range(
1646 &(start_anchor..end_anchor),
1647 collaboration_hub.as_ref(),
1648 cx,
1649 ) {
1650 let selection_style = if let Some(participant_index) = selection.participant_index {
1651 cx.theme()
1652 .players()
1653 .color_for_participant(participant_index.0)
1654 } else {
1655 cx.theme().players().absent()
1656 };
1657
1658 // Don't re-render the leader's selections, since the local selections
1659 // match theirs.
1660 if Some(selection.peer_id) == editor.leader_peer_id {
1661 continue;
1662 }
1663
1664 remote_selections
1665 .entry(selection.replica_id)
1666 .or_insert((selection_style, Vec::new()))
1667 .1
1668 .push(SelectionLayout::new(
1669 selection.selection,
1670 selection.line_mode,
1671 selection.cursor_shape,
1672 &snapshot.display_snapshot,
1673 false,
1674 false,
1675 ));
1676 }
1677
1678 selections.extend(remote_selections.into_values());
1679 }
1680
1681 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1682 let show_scrollbars = match scrollbar_settings.show {
1683 ShowScrollbar::Auto => {
1684 // Git
1685 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1686 ||
1687 // Selections
1688 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1689 // Scrollmanager
1690 || editor.scroll_manager.scrollbars_visible()
1691 }
1692 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1693 ShowScrollbar::Always => true,
1694 ShowScrollbar::Never => false,
1695 };
1696
1697 let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)> = Vec::new();
1698 // todo!()
1699
1700 // fold_ranges
1701 // .into_iter()
1702 // .map(|(id, fold)| {
1703 // // todo!("folds!")
1704 // // let color = self
1705 // // .style
1706 // // .folds
1707 // // .ellipses
1708 // // .background
1709 // // .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
1710 // // .color;
1711
1712 // // (id, fold, color)
1713 // })
1714 // .collect();
1715
1716 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1717 let newest = editor.selections.newest::<Point>(cx);
1718 SelectionLayout::new(
1719 newest,
1720 editor.selections.line_mode,
1721 editor.cursor_shape,
1722 &snapshot.display_snapshot,
1723 true,
1724 true,
1725 )
1726 .head
1727 });
1728
1729 let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
1730 start_row..end_row,
1731 &active_rows,
1732 head_for_relative,
1733 is_singleton,
1734 &snapshot,
1735 cx,
1736 );
1737
1738 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1739
1740 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1741
1742 let mut max_visible_line_width = Pixels::ZERO;
1743 let line_layouts =
1744 self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
1745 for line_with_invisibles in &line_layouts {
1746 if line_with_invisibles.line.width > max_visible_line_width {
1747 max_visible_line_width = line_with_invisibles.line.width;
1748 }
1749 }
1750
1751 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1752 .unwrap()
1753 .width;
1754 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1755
1756 let (scroll_width, blocks) = self.layout_blocks(
1757 start_row..end_row,
1758 &snapshot,
1759 bounds.size.width,
1760 scroll_width,
1761 gutter_padding,
1762 gutter_width,
1763 em_width,
1764 gutter_width + gutter_margin,
1765 line_height,
1766 &style,
1767 &line_layouts,
1768 editor,
1769 cx,
1770 );
1771
1772 let scroll_max = point(
1773 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1774 max_row as f32,
1775 );
1776
1777 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1778
1779 let autoscrolled = if autoscroll_horizontally {
1780 editor.autoscroll_horizontally(
1781 start_row,
1782 text_size.width,
1783 scroll_width,
1784 em_width,
1785 &line_layouts,
1786 cx,
1787 )
1788 } else {
1789 false
1790 };
1791
1792 if clamped || autoscrolled {
1793 snapshot = editor.snapshot(cx);
1794 }
1795
1796 let mut context_menu = None;
1797 let mut code_actions_indicator = None;
1798 if let Some(newest_selection_head) = newest_selection_head {
1799 if (start_row..end_row).contains(&newest_selection_head.row()) {
1800 if editor.context_menu_visible() {
1801 context_menu =
1802 editor.render_context_menu(newest_selection_head, &self.style, cx);
1803 }
1804
1805 let active = matches!(
1806 editor.context_menu.read().as_ref(),
1807 Some(crate::ContextMenu::CodeActions(_))
1808 );
1809
1810 code_actions_indicator = editor
1811 .render_code_actions_indicator(&style, active, cx)
1812 .map(|element| CodeActionsIndicator {
1813 row: newest_selection_head.row(),
1814 element,
1815 });
1816 }
1817 }
1818
1819 let visible_rows = start_row..start_row + line_layouts.len() as u32;
1820 // todo!("hover")
1821 // let mut hover = editor.hover_state.render(
1822 // &snapshot,
1823 // &style,
1824 // visible_rows,
1825 // editor.workspace.as_ref().map(|(w, _)| w.clone()),
1826 // cx,
1827 // );
1828 // let mode = editor.mode;
1829
1830 // todo!("fold_indicators")
1831 // let mut fold_indicators = editor.render_fold_indicators(
1832 // fold_statuses,
1833 // &style,
1834 // editor.gutter_hovered,
1835 // line_height,
1836 // gutter_margin,
1837 // cx,
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!("fold indicators")
1856 // for fold_indicator in fold_indicators.iter_mut() {
1857 // if let Some(indicator) = fold_indicator.as_mut() {
1858 // indicator.layout(
1859 // SizeConstraint::strict_along(
1860 // Axis::Vertical,
1861 // line_height * style.code_actions.vertical_scale,
1862 // ),
1863 // editor,
1864 // cx,
1865 // );
1866 // }
1867 // }
1868
1869 // todo!("hover popovers")
1870 // if let Some((_, hover_popovers)) = hover.as_mut() {
1871 // for hover_popover in hover_popovers.iter_mut() {
1872 // hover_popover.layout(
1873 // SizeConstraint {
1874 // min: gpui::Point::<Pixels>::zero(),
1875 // max: point(
1876 // (120. * em_width) // Default size
1877 // .min(size.x / 2.) // Shrink to half of the editor width
1878 // .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1879 // (16. * line_height) // Default size
1880 // .min(size.y / 2.) // Shrink to half of the editor height
1881 // .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1882 // ),
1883 // },
1884 // editor,
1885 // cx,
1886 // );
1887 // }
1888 // }
1889
1890 let invisible_symbol_font_size = font_size / 2.;
1891 let tab_invisible = cx
1892 .text_system()
1893 .layout_text(
1894 "→",
1895 invisible_symbol_font_size,
1896 &[TextRun {
1897 len: "→".len(),
1898 font: self.style.text.font(),
1899 color: cx.theme().colors().editor_invisible,
1900 underline: None,
1901 }],
1902 None,
1903 )
1904 .unwrap()
1905 .pop()
1906 .unwrap();
1907 let space_invisible = cx
1908 .text_system()
1909 .layout_text(
1910 "•",
1911 invisible_symbol_font_size,
1912 &[TextRun {
1913 len: "•".len(),
1914 font: self.style.text.font(),
1915 color: cx.theme().colors().editor_invisible,
1916 underline: None,
1917 }],
1918 None,
1919 )
1920 .unwrap()
1921 .pop()
1922 .unwrap();
1923
1924 LayoutState {
1925 mode: editor_mode,
1926 position_map: Arc::new(PositionMap {
1927 size: bounds.size,
1928 scroll_max,
1929 line_layouts,
1930 line_height,
1931 em_width,
1932 em_advance,
1933 snapshot,
1934 }),
1935 visible_display_row_range: start_row..end_row,
1936 wrap_guides,
1937 gutter_size,
1938 gutter_padding,
1939 text_size,
1940 scrollbar_row_range,
1941 show_scrollbars,
1942 is_singleton,
1943 max_row,
1944 gutter_margin,
1945 active_rows,
1946 highlighted_rows,
1947 highlighted_ranges,
1948 fold_ranges,
1949 line_number_layouts,
1950 display_hunks,
1951 blocks,
1952 selections,
1953 context_menu,
1954 code_actions_indicator,
1955 // fold_indicators,
1956 tab_invisible,
1957 space_invisible,
1958 // hover_popovers: hover,
1959 }
1960 }
1961
1962 #[allow(clippy::too_many_arguments)]
1963 fn layout_blocks(
1964 &mut self,
1965 rows: Range<u32>,
1966 snapshot: &EditorSnapshot,
1967 editor_width: Pixels,
1968 scroll_width: Pixels,
1969 gutter_padding: Pixels,
1970 gutter_width: Pixels,
1971 em_width: Pixels,
1972 text_x: Pixels,
1973 line_height: Pixels,
1974 style: &EditorStyle,
1975 line_layouts: &[LineWithInvisibles],
1976 editor: &mut Editor,
1977 cx: &mut ViewContext<Editor>,
1978 ) -> (Pixels, Vec<BlockLayout>) {
1979 let mut block_id = 0;
1980 let scroll_x = snapshot.scroll_anchor.offset.x;
1981 let (fixed_blocks, non_fixed_blocks) = snapshot
1982 .blocks_in_range(rows.clone())
1983 .partition::<Vec<_>, _>(|(_, block)| match block {
1984 TransformBlock::ExcerptHeader { .. } => false,
1985 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1986 });
1987 let mut render_block = |block: &TransformBlock,
1988 available_space: Size<AvailableSpace>,
1989 block_id: usize,
1990 editor: &mut Editor,
1991 cx: &mut ViewContext<Editor>| {
1992 let mut element = match block {
1993 TransformBlock::Custom(block) => {
1994 let align_to = block
1995 .position()
1996 .to_point(&snapshot.buffer_snapshot)
1997 .to_display_point(snapshot);
1998 let anchor_x = text_x
1999 + if rows.contains(&align_to.row()) {
2000 line_layouts[(align_to.row() - rows.start) as usize]
2001 .line
2002 .x_for_index(align_to.column() as usize)
2003 } else {
2004 layout_line(align_to.row(), snapshot, style, cx)
2005 .unwrap()
2006 .x_for_index(align_to.column() as usize)
2007 };
2008
2009 block.render(&mut BlockContext {
2010 view_context: cx,
2011 anchor_x,
2012 gutter_padding,
2013 line_height,
2014 // scroll_x,
2015 gutter_width,
2016 em_width,
2017 block_id,
2018 })
2019 }
2020 TransformBlock::ExcerptHeader {
2021 id,
2022 buffer,
2023 range,
2024 starts_new_buffer,
2025 ..
2026 } => {
2027 let include_root = editor
2028 .project
2029 .as_ref()
2030 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2031 .unwrap_or_default();
2032 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2033 let jump_path = ProjectPath {
2034 worktree_id: file.worktree_id(cx),
2035 path: file.path.clone(),
2036 };
2037 let jump_anchor = range
2038 .primary
2039 .as_ref()
2040 .map_or(range.context.start, |primary| primary.start);
2041 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2042
2043 // todo!("avoid ElementId collision risk here")
2044 let icon_button_id: usize = id.clone().into();
2045 IconButton::new(icon_button_id, ui::Icon::ArrowUpRight)
2046 .on_click(move |editor: &mut Editor, cx| {
2047 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2048 })
2049 .tooltip("Jump to Buffer") // todo!(pass an action as well to show key binding)
2050 });
2051
2052 let element = if *starts_new_buffer {
2053 let path = buffer.resolve_file_path(cx, include_root);
2054 let mut filename = None;
2055 let mut parent_path = None;
2056 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2057 if let Some(path) = path {
2058 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2059 parent_path =
2060 path.parent().map(|p| p.to_string_lossy().to_string() + "/");
2061 }
2062
2063 h_stack()
2064 .size_full()
2065 .bg(gpui::red())
2066 .child(filename.unwrap_or_else(|| "untitled".to_string()))
2067 .children(parent_path)
2068 .children(jump_icon) // .p_x(gutter_padding)
2069 } else {
2070 let text_style = style.text.clone();
2071 h_stack()
2072 .size_full()
2073 .bg(gpui::red())
2074 .child("⋯")
2075 .children(jump_icon) // .p_x(gutter_padding)
2076 };
2077 element.render()
2078 }
2079 };
2080
2081 let size = element.measure(available_space, editor, cx);
2082 (element, size)
2083 };
2084
2085 let mut fixed_block_max_width = Pixels::ZERO;
2086 let mut blocks = Vec::new();
2087 for (row, block) in fixed_blocks {
2088 let available_space = size(
2089 AvailableSpace::MinContent,
2090 AvailableSpace::Definite(block.height() as f32 * line_height),
2091 );
2092 let (element, element_size) =
2093 render_block(block, available_space, block_id, editor, cx);
2094 block_id += 1;
2095 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2096 blocks.push(BlockLayout {
2097 row,
2098 element,
2099 available_space,
2100 style: BlockStyle::Fixed,
2101 });
2102 }
2103 for (row, block) in non_fixed_blocks {
2104 let style = match block {
2105 TransformBlock::Custom(block) => block.style(),
2106 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2107 };
2108 let width = match style {
2109 BlockStyle::Sticky => editor_width,
2110 BlockStyle::Flex => editor_width
2111 .max(fixed_block_max_width)
2112 .max(gutter_width + scroll_width),
2113 BlockStyle::Fixed => unreachable!(),
2114 };
2115 let available_space = size(
2116 AvailableSpace::Definite(width),
2117 AvailableSpace::Definite(block.height() as f32 * line_height),
2118 );
2119 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2120 block_id += 1;
2121 blocks.push(BlockLayout {
2122 row,
2123 element,
2124 available_space,
2125 style,
2126 });
2127 }
2128 (
2129 scroll_width.max(fixed_block_max_width - gutter_width),
2130 blocks,
2131 )
2132 }
2133
2134 fn paint_mouse_listeners(
2135 &mut self,
2136 bounds: Bounds<Pixels>,
2137 gutter_bounds: Bounds<Pixels>,
2138 text_bounds: Bounds<Pixels>,
2139 position_map: &Arc<PositionMap>,
2140 cx: &mut ViewContext<Editor>,
2141 ) {
2142 cx.on_mouse_event({
2143 let position_map = position_map.clone();
2144 move |editor, event: &ScrollWheelEvent, phase, cx| {
2145 if phase != DispatchPhase::Bubble {
2146 return;
2147 }
2148
2149 if Self::scroll(editor, event, &position_map, bounds, cx) {
2150 cx.stop_propagation();
2151 }
2152 }
2153 });
2154 cx.on_mouse_event({
2155 let position_map = position_map.clone();
2156 move |editor, event: &MouseDownEvent, phase, cx| {
2157 if phase != DispatchPhase::Bubble {
2158 return;
2159 }
2160
2161 if Self::mouse_down(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2162 cx.stop_propagation()
2163 }
2164 }
2165 });
2166 cx.on_mouse_event({
2167 let position_map = position_map.clone();
2168 move |editor, event: &MouseUpEvent, phase, cx| {
2169 if phase != DispatchPhase::Bubble {
2170 return;
2171 }
2172
2173 if Self::mouse_up(editor, event, &position_map, text_bounds, cx) {
2174 cx.stop_propagation()
2175 }
2176 }
2177 });
2178 // todo!()
2179 // on_down(MouseButton::Right, {
2180 // let position_map = position_map.clone();
2181 // move |event, editor, cx| {
2182 // if !Self::mouse_right_down(
2183 // editor,
2184 // event.position,
2185 // position_map.as_ref(),
2186 // text_bounds,
2187 // cx,
2188 // ) {
2189 // cx.propagate_event();
2190 // }
2191 // }
2192 // });
2193 cx.on_mouse_event({
2194 let position_map = position_map.clone();
2195 move |editor, event: &MouseMoveEvent, phase, cx| {
2196 if phase != DispatchPhase::Bubble {
2197 return;
2198 }
2199
2200 if Self::mouse_moved(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2201 cx.stop_propagation()
2202 }
2203 }
2204 });
2205 }
2206}
2207
2208#[derive(Debug)]
2209pub struct LineWithInvisibles {
2210 pub line: Line,
2211 invisibles: Vec<Invisible>,
2212}
2213
2214impl LineWithInvisibles {
2215 fn from_chunks<'a>(
2216 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2217 text_style: &TextStyle,
2218 max_line_len: usize,
2219 max_line_count: usize,
2220 line_number_layouts: &[Option<Line>],
2221 editor_mode: EditorMode,
2222 cx: &WindowContext,
2223 ) -> Vec<Self> {
2224 let mut layouts = Vec::with_capacity(max_line_count);
2225 let mut line = String::new();
2226 let mut invisibles = Vec::new();
2227 let mut styles = Vec::new();
2228 let mut non_whitespace_added = false;
2229 let mut row = 0;
2230 let mut line_exceeded_max_len = false;
2231 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2232
2233 for highlighted_chunk in chunks.chain([HighlightedChunk {
2234 chunk: "\n",
2235 style: None,
2236 is_tab: false,
2237 }]) {
2238 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2239 if ix > 0 {
2240 let layout = cx
2241 .text_system()
2242 .layout_text(&line, font_size, &styles, None);
2243 layouts.push(Self {
2244 line: layout.unwrap().pop().unwrap(),
2245 invisibles: invisibles.drain(..).collect(),
2246 });
2247
2248 line.clear();
2249 styles.clear();
2250 row += 1;
2251 line_exceeded_max_len = false;
2252 non_whitespace_added = false;
2253 if row == max_line_count {
2254 return layouts;
2255 }
2256 }
2257
2258 if !line_chunk.is_empty() && !line_exceeded_max_len {
2259 let text_style = if let Some(style) = highlighted_chunk.style {
2260 text_style
2261 .clone()
2262 .highlight(style)
2263 .map(Cow::Owned)
2264 .unwrap_or_else(|_| Cow::Borrowed(text_style))
2265 } else {
2266 Cow::Borrowed(text_style)
2267 };
2268
2269 if line.len() + line_chunk.len() > max_line_len {
2270 let mut chunk_len = max_line_len - line.len();
2271 while !line_chunk.is_char_boundary(chunk_len) {
2272 chunk_len -= 1;
2273 }
2274 line_chunk = &line_chunk[..chunk_len];
2275 line_exceeded_max_len = true;
2276 }
2277
2278 styles.push(TextRun {
2279 len: line_chunk.len(),
2280 font: text_style.font(),
2281 color: text_style.color,
2282 underline: text_style.underline,
2283 });
2284
2285 if editor_mode == EditorMode::Full {
2286 // Line wrap pads its contents with fake whitespaces,
2287 // avoid printing them
2288 let inside_wrapped_string = line_number_layouts
2289 .get(row)
2290 .and_then(|layout| layout.as_ref())
2291 .is_none();
2292 if highlighted_chunk.is_tab {
2293 if non_whitespace_added || !inside_wrapped_string {
2294 invisibles.push(Invisible::Tab {
2295 line_start_offset: line.len(),
2296 });
2297 }
2298 } else {
2299 invisibles.extend(
2300 line_chunk
2301 .chars()
2302 .enumerate()
2303 .filter(|(_, line_char)| {
2304 let is_whitespace = line_char.is_whitespace();
2305 non_whitespace_added |= !is_whitespace;
2306 is_whitespace
2307 && (non_whitespace_added || !inside_wrapped_string)
2308 })
2309 .map(|(whitespace_index, _)| Invisible::Whitespace {
2310 line_offset: line.len() + whitespace_index,
2311 }),
2312 )
2313 }
2314 }
2315
2316 line.push_str(line_chunk);
2317 }
2318 }
2319 }
2320
2321 layouts
2322 }
2323
2324 fn draw(
2325 &self,
2326 layout: &LayoutState,
2327 row: u32,
2328 scroll_top: Pixels,
2329 content_origin: gpui::Point<Pixels>,
2330 scroll_left: Pixels,
2331 whitespace_setting: ShowWhitespaceSetting,
2332 selection_ranges: &[Range<DisplayPoint>],
2333 cx: &mut ViewContext<Editor>,
2334 ) {
2335 let line_height = layout.position_map.line_height;
2336 let line_y = line_height * row as f32 - scroll_top;
2337
2338 self.line.paint(
2339 content_origin + gpui::point(-scroll_left, line_y),
2340 line_height,
2341 cx,
2342 );
2343
2344 self.draw_invisibles(
2345 &selection_ranges,
2346 layout,
2347 content_origin,
2348 scroll_left,
2349 line_y,
2350 row,
2351 line_height,
2352 whitespace_setting,
2353 cx,
2354 );
2355 }
2356
2357 fn draw_invisibles(
2358 &self,
2359 selection_ranges: &[Range<DisplayPoint>],
2360 layout: &LayoutState,
2361 content_origin: gpui::Point<Pixels>,
2362 scroll_left: Pixels,
2363 line_y: Pixels,
2364 row: u32,
2365 line_height: Pixels,
2366 whitespace_setting: ShowWhitespaceSetting,
2367 cx: &mut ViewContext<Editor>,
2368 ) {
2369 let allowed_invisibles_regions = match whitespace_setting {
2370 ShowWhitespaceSetting::None => return,
2371 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2372 ShowWhitespaceSetting::All => None,
2373 };
2374
2375 for invisible in &self.invisibles {
2376 let (&token_offset, invisible_symbol) = match invisible {
2377 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2378 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2379 };
2380
2381 let x_offset = self.line.x_for_index(token_offset);
2382 let invisible_offset =
2383 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2384 let origin =
2385 content_origin + gpui::point(-scroll_left + x_offset + invisible_offset, line_y);
2386
2387 if let Some(allowed_regions) = allowed_invisibles_regions {
2388 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2389 if !allowed_regions
2390 .iter()
2391 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2392 {
2393 continue;
2394 }
2395 }
2396 invisible_symbol.paint(origin, line_height, cx);
2397 }
2398 }
2399}
2400
2401#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2402enum Invisible {
2403 Tab { line_start_offset: usize },
2404 Whitespace { line_offset: usize },
2405}
2406
2407impl Element<Editor> for EditorElement {
2408 type ElementState = ();
2409
2410 fn element_id(&self) -> Option<gpui::ElementId> {
2411 Some(self.editor_id.into())
2412 }
2413
2414 fn initialize(
2415 &mut self,
2416 editor: &mut Editor,
2417 element_state: Option<Self::ElementState>,
2418 cx: &mut gpui::ViewContext<Editor>,
2419 ) -> Self::ElementState {
2420 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2421 }
2422
2423 fn layout(
2424 &mut self,
2425 editor: &mut Editor,
2426 element_state: &mut Self::ElementState,
2427 cx: &mut gpui::ViewContext<Editor>,
2428 ) -> gpui::LayoutId {
2429 let rem_size = cx.rem_size();
2430 let mut style = Style::default();
2431 style.size.width = relative(1.).into();
2432 style.size.height = match editor.mode {
2433 EditorMode::SingleLine => self.style.text.line_height_in_pixels(cx.rem_size()).into(),
2434 EditorMode::AutoHeight { .. } => todo!(),
2435 EditorMode::Full => relative(1.).into(),
2436 };
2437 cx.request_layout(&style, None)
2438 }
2439
2440 fn paint(
2441 &mut self,
2442 bounds: Bounds<gpui::Pixels>,
2443 editor: &mut Editor,
2444 element_state: &mut Self::ElementState,
2445 cx: &mut gpui::ViewContext<Editor>,
2446 ) {
2447 let mut layout = self.compute_layout(editor, cx, bounds);
2448 let gutter_bounds = Bounds {
2449 origin: bounds.origin,
2450 size: layout.gutter_size,
2451 };
2452 let text_bounds = Bounds {
2453 origin: gutter_bounds.upper_right(),
2454 size: layout.text_size,
2455 };
2456
2457 let dispatch_context = editor.dispatch_context(cx);
2458 cx.with_key_dispatch(
2459 dispatch_context,
2460 Some(editor.focus_handle.clone()),
2461 |_, cx| {
2462 register_action(cx, Editor::move_left);
2463 register_action(cx, Editor::move_right);
2464 register_action(cx, Editor::move_down);
2465 register_action(cx, Editor::move_up);
2466 // on_action(cx, Editor::new_file); todo!()
2467 // on_action(cx, Editor::new_file_in_direction); todo!()
2468 register_action(cx, Editor::cancel);
2469 register_action(cx, Editor::newline);
2470 register_action(cx, Editor::newline_above);
2471 register_action(cx, Editor::newline_below);
2472 register_action(cx, Editor::backspace);
2473 register_action(cx, Editor::delete);
2474 register_action(cx, Editor::tab);
2475 register_action(cx, Editor::tab_prev);
2476 register_action(cx, Editor::indent);
2477 register_action(cx, Editor::outdent);
2478 register_action(cx, Editor::delete_line);
2479 register_action(cx, Editor::join_lines);
2480 register_action(cx, Editor::sort_lines_case_sensitive);
2481 register_action(cx, Editor::sort_lines_case_insensitive);
2482 register_action(cx, Editor::reverse_lines);
2483 register_action(cx, Editor::shuffle_lines);
2484 register_action(cx, Editor::convert_to_upper_case);
2485 register_action(cx, Editor::convert_to_lower_case);
2486 register_action(cx, Editor::convert_to_title_case);
2487 register_action(cx, Editor::convert_to_snake_case);
2488 register_action(cx, Editor::convert_to_kebab_case);
2489 register_action(cx, Editor::convert_to_upper_camel_case);
2490 register_action(cx, Editor::convert_to_lower_camel_case);
2491 register_action(cx, Editor::delete_to_previous_word_start);
2492 register_action(cx, Editor::delete_to_previous_subword_start);
2493 register_action(cx, Editor::delete_to_next_word_end);
2494 register_action(cx, Editor::delete_to_next_subword_end);
2495 register_action(cx, Editor::delete_to_beginning_of_line);
2496 register_action(cx, Editor::delete_to_end_of_line);
2497 register_action(cx, Editor::cut_to_end_of_line);
2498 register_action(cx, Editor::duplicate_line);
2499 register_action(cx, Editor::move_line_up);
2500 register_action(cx, Editor::move_line_down);
2501 register_action(cx, Editor::transpose);
2502 register_action(cx, Editor::cut);
2503 register_action(cx, Editor::copy);
2504 register_action(cx, Editor::paste);
2505 register_action(cx, Editor::undo);
2506 register_action(cx, Editor::redo);
2507 register_action(cx, Editor::move_page_up);
2508 register_action(cx, Editor::move_page_down);
2509 register_action(cx, Editor::next_screen);
2510 register_action(cx, Editor::scroll_cursor_top);
2511 register_action(cx, Editor::scroll_cursor_center);
2512 register_action(cx, Editor::scroll_cursor_bottom);
2513 register_action(cx, |editor, _: &LineDown, cx| {
2514 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
2515 });
2516 register_action(cx, |editor, _: &LineUp, cx| {
2517 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
2518 });
2519 register_action(cx, |editor, _: &HalfPageDown, cx| {
2520 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
2521 });
2522 register_action(cx, |editor, _: &HalfPageUp, cx| {
2523 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
2524 });
2525 register_action(cx, |editor, _: &PageDown, cx| {
2526 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
2527 });
2528 register_action(cx, |editor, _: &PageUp, cx| {
2529 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
2530 });
2531 register_action(cx, Editor::move_to_previous_word_start);
2532 register_action(cx, Editor::move_to_previous_subword_start);
2533 register_action(cx, Editor::move_to_next_word_end);
2534 register_action(cx, Editor::move_to_next_subword_end);
2535 register_action(cx, Editor::move_to_beginning_of_line);
2536 register_action(cx, Editor::move_to_end_of_line);
2537 register_action(cx, Editor::move_to_start_of_paragraph);
2538 register_action(cx, Editor::move_to_end_of_paragraph);
2539 register_action(cx, Editor::move_to_beginning);
2540 register_action(cx, Editor::move_to_end);
2541 register_action(cx, Editor::select_up);
2542 register_action(cx, Editor::select_down);
2543 register_action(cx, Editor::select_left);
2544 register_action(cx, Editor::select_right);
2545 register_action(cx, Editor::select_to_previous_word_start);
2546 register_action(cx, Editor::select_to_previous_subword_start);
2547 register_action(cx, Editor::select_to_next_word_end);
2548 register_action(cx, Editor::select_to_next_subword_end);
2549 register_action(cx, Editor::select_to_beginning_of_line);
2550 register_action(cx, Editor::select_to_end_of_line);
2551 register_action(cx, Editor::select_to_start_of_paragraph);
2552 register_action(cx, Editor::select_to_end_of_paragraph);
2553 register_action(cx, Editor::select_to_beginning);
2554 register_action(cx, Editor::select_to_end);
2555 register_action(cx, Editor::select_all);
2556 register_action(cx, |editor, action, cx| {
2557 editor.select_all_matches(action, cx).log_err();
2558 });
2559 register_action(cx, Editor::select_line);
2560 register_action(cx, Editor::split_selection_into_lines);
2561 register_action(cx, Editor::add_selection_above);
2562 register_action(cx, Editor::add_selection_below);
2563 register_action(cx, |editor, action, cx| {
2564 editor.select_next(action, cx).log_err();
2565 });
2566 register_action(cx, |editor, action, cx| {
2567 editor.select_previous(action, cx).log_err();
2568 });
2569 register_action(cx, Editor::toggle_comments);
2570 register_action(cx, Editor::select_larger_syntax_node);
2571 register_action(cx, Editor::select_smaller_syntax_node);
2572 register_action(cx, Editor::move_to_enclosing_bracket);
2573 register_action(cx, Editor::undo_selection);
2574 register_action(cx, Editor::redo_selection);
2575 register_action(cx, Editor::go_to_diagnostic);
2576 register_action(cx, Editor::go_to_prev_diagnostic);
2577 register_action(cx, Editor::go_to_hunk);
2578 register_action(cx, Editor::go_to_prev_hunk);
2579 register_action(cx, Editor::go_to_definition);
2580 register_action(cx, Editor::go_to_definition_split);
2581 register_action(cx, Editor::go_to_type_definition);
2582 register_action(cx, Editor::go_to_type_definition_split);
2583 register_action(cx, Editor::fold);
2584 register_action(cx, Editor::fold_at);
2585 register_action(cx, Editor::unfold_lines);
2586 register_action(cx, Editor::unfold_at);
2587 register_action(cx, Editor::fold_selected_ranges);
2588 register_action(cx, Editor::show_completions);
2589 register_action(cx, Editor::toggle_code_actions);
2590 // on_action(cx, Editor::open_excerpts); todo!()
2591 register_action(cx, Editor::toggle_soft_wrap);
2592 register_action(cx, Editor::toggle_inlay_hints);
2593 register_action(cx, Editor::reveal_in_finder);
2594 register_action(cx, Editor::copy_path);
2595 register_action(cx, Editor::copy_relative_path);
2596 register_action(cx, Editor::copy_highlight_json);
2597 register_action(cx, |editor, action, cx| {
2598 editor
2599 .format(action, cx)
2600 .map(|task| task.detach_and_log_err(cx));
2601 });
2602 register_action(cx, Editor::restart_language_server);
2603 register_action(cx, Editor::show_character_palette);
2604 // on_action(cx, Editor::confirm_completion); todo!()
2605 register_action(cx, |editor, action, cx| {
2606 editor
2607 .confirm_code_action(action, cx)
2608 .map(|task| task.detach_and_log_err(cx));
2609 });
2610 // on_action(cx, Editor::rename); todo!()
2611 // on_action(cx, Editor::confirm_rename); todo!()
2612 register_action(cx, |editor, action, cx| {
2613 editor
2614 .find_all_references(action, cx)
2615 .map(|task| task.detach_and_log_err(cx));
2616 });
2617 register_action(cx, Editor::next_copilot_suggestion);
2618 register_action(cx, Editor::previous_copilot_suggestion);
2619 register_action(cx, Editor::copilot_suggest);
2620 register_action(cx, Editor::context_menu_first);
2621 register_action(cx, Editor::context_menu_prev);
2622 register_action(cx, Editor::context_menu_next);
2623 register_action(cx, Editor::context_menu_last);
2624
2625 // We call with_z_index to establish a new stacking context.
2626 cx.with_z_index(0, |cx| {
2627 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2628 self.paint_mouse_listeners(
2629 bounds,
2630 gutter_bounds,
2631 text_bounds,
2632 &layout.position_map,
2633 cx,
2634 );
2635 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2636 if layout.gutter_size.width > Pixels::ZERO {
2637 self.paint_gutter(gutter_bounds, &mut layout, editor, cx);
2638 }
2639 self.paint_text(text_bounds, &mut layout, editor, cx);
2640
2641 if !layout.blocks.is_empty() {
2642 self.paint_blocks(bounds, &mut layout, editor, cx);
2643 }
2644
2645 let input_handler = ElementInputHandler::new(bounds, cx);
2646 cx.handle_input(&editor.focus_handle, input_handler);
2647 });
2648 });
2649 },
2650 )
2651 }
2652}
2653
2654// impl EditorElement {
2655// type LayoutState = LayoutState;
2656// type PaintState = ();
2657
2658// fn layout(
2659// &mut self,
2660// constraint: SizeConstraint,
2661// editor: &mut Editor,
2662// cx: &mut ViewContext<Editor>,
2663// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2664// let mut size = constraint.max;
2665// if size.x.is_infinite() {
2666// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2667// }
2668
2669// let snapshot = editor.snapshot(cx);
2670// let style = self.style.clone();
2671
2672// let line_height = (style.text.font_size * style.line_height_scalar).round();
2673
2674// let gutter_padding;
2675// let gutter_width;
2676// let gutter_margin;
2677// if snapshot.show_gutter {
2678// let em_width = style.text.em_width(cx.font_cache());
2679// gutter_padding = (em_width * style.gutter_padding_factor).round();
2680// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2681// gutter_margin = -style.text.descent(cx.font_cache());
2682// } else {
2683// gutter_padding = 0.0;
2684// gutter_width = 0.0;
2685// gutter_margin = 0.0;
2686// };
2687
2688// let text_width = size.x - gutter_width;
2689// let em_width = style.text.em_width(cx.font_cache());
2690// let em_advance = style.text.em_advance(cx.font_cache());
2691// let overscroll = point(em_width, 0.);
2692// let snapshot = {
2693// editor.set_visible_line_count(size.y / line_height, cx);
2694
2695// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2696// let wrap_width = match editor.soft_wrap_mode(cx) {
2697// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2698// SoftWrap::EditorWidth => editor_width,
2699// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2700// };
2701
2702// if editor.set_wrap_width(Some(wrap_width), cx) {
2703// editor.snapshot(cx)
2704// } else {
2705// snapshot
2706// }
2707// };
2708
2709// let wrap_guides = editor
2710// .wrap_guides(cx)
2711// .iter()
2712// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2713// .collect();
2714
2715// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2716// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2717// size.set_y(
2718// scroll_height
2719// .min(constraint.max_along(Axis::Vertical))
2720// .max(constraint.min_along(Axis::Vertical))
2721// .max(line_height)
2722// .min(line_height * max_lines as f32),
2723// )
2724// } else if let EditorMode::SingleLine = snapshot.mode {
2725// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2726// } else if size.y.is_infinite() {
2727// size.set_y(scroll_height);
2728// }
2729// let gutter_size = point(gutter_width, size.y);
2730// let text_size = point(text_width, size.y);
2731
2732// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2733// let mut snapshot = editor.snapshot(cx);
2734
2735// let scroll_position = snapshot.scroll_position();
2736// // The scroll position is a fractional point, the whole number of which represents
2737// // the top of the window in terms of display rows.
2738// let start_row = scroll_position.y as u32;
2739// let height_in_lines = size.y / line_height;
2740// let max_row = snapshot.max_point().row();
2741
2742// // Add 1 to ensure selections bleed off screen
2743// let end_row = 1 + cmp::min(
2744// (scroll_position.y + height_in_lines).ceil() as u32,
2745// max_row,
2746// );
2747
2748// let start_anchor = if start_row == 0 {
2749// Anchor::min()
2750// } else {
2751// snapshot
2752// .buffer_snapshot
2753// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2754// };
2755// let end_anchor = if end_row > max_row {
2756// Anchor::max
2757// } else {
2758// snapshot
2759// .buffer_snapshot
2760// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2761// };
2762
2763// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2764// let mut active_rows = BTreeMap::new();
2765// let mut fold_ranges = Vec::new();
2766// let is_singleton = editor.is_singleton(cx);
2767
2768// let highlighted_rows = editor.highlighted_rows();
2769// let theme = theme::current(cx);
2770// let highlighted_ranges = editor.background_highlights_in_range(
2771// start_anchor..end_anchor,
2772// &snapshot.display_snapshot,
2773// theme.as_ref(),
2774// );
2775
2776// fold_ranges.extend(
2777// snapshot
2778// .folds_in_range(start_anchor..end_anchor)
2779// .map(|anchor| {
2780// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2781// (
2782// start.row,
2783// start.to_display_point(&snapshot.display_snapshot)
2784// ..anchor.end.to_display_point(&snapshot),
2785// )
2786// }),
2787// );
2788
2789// let mut newest_selection_head = None;
2790
2791// if editor.show_local_selections {
2792// let mut local_selections: Vec<Selection<Point>> = editor
2793// .selections
2794// .disjoint_in_range(start_anchor..end_anchor, cx);
2795// local_selections.extend(editor.selections.pending(cx));
2796// let mut layouts = Vec::new();
2797// let newest = editor.selections.newest(cx);
2798// for selection in local_selections.drain(..) {
2799// let is_empty = selection.start == selection.end;
2800// let is_newest = selection == newest;
2801
2802// let layout = SelectionLayout::new(
2803// selection,
2804// editor.selections.line_mode,
2805// editor.cursor_shape,
2806// &snapshot.display_snapshot,
2807// is_newest,
2808// true,
2809// );
2810// if is_newest {
2811// newest_selection_head = Some(layout.head);
2812// }
2813
2814// for row in cmp::max(layout.active_rows.start, start_row)
2815// ..=cmp::min(layout.active_rows.end, end_row)
2816// {
2817// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2818// *contains_non_empty_selection |= !is_empty;
2819// }
2820// layouts.push(layout);
2821// }
2822
2823// selections.push((style.selection, layouts));
2824// }
2825
2826// if let Some(collaboration_hub) = &editor.collaboration_hub {
2827// // When following someone, render the local selections in their color.
2828// if let Some(leader_id) = editor.leader_peer_id {
2829// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2830// if let Some(participant_index) = collaboration_hub
2831// .user_participant_indices(cx)
2832// .get(&collaborator.user_id)
2833// {
2834// if let Some((local_selection_style, _)) = selections.first_mut() {
2835// *local_selection_style =
2836// style.selection_style_for_room_participant(participant_index.0);
2837// }
2838// }
2839// }
2840// }
2841
2842// let mut remote_selections = HashMap::default();
2843// for selection in snapshot.remote_selections_in_range(
2844// &(start_anchor..end_anchor),
2845// collaboration_hub.as_ref(),
2846// cx,
2847// ) {
2848// let selection_style = if let Some(participant_index) = selection.participant_index {
2849// style.selection_style_for_room_participant(participant_index.0)
2850// } else {
2851// style.absent_selection
2852// };
2853
2854// // Don't re-render the leader's selections, since the local selections
2855// // match theirs.
2856// if Some(selection.peer_id) == editor.leader_peer_id {
2857// continue;
2858// }
2859
2860// remote_selections
2861// .entry(selection.replica_id)
2862// .or_insert((selection_style, Vec::new()))
2863// .1
2864// .push(SelectionLayout::new(
2865// selection.selection,
2866// selection.line_mode,
2867// selection.cursor_shape,
2868// &snapshot.display_snapshot,
2869// false,
2870// false,
2871// ));
2872// }
2873
2874// selections.extend(remote_selections.into_values());
2875// }
2876
2877// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2878// let show_scrollbars = match scrollbar_settings.show {
2879// ShowScrollbar::Auto => {
2880// // Git
2881// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2882// ||
2883// // Selections
2884// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2885// // Scrollmanager
2886// || editor.scroll_manager.scrollbars_visible()
2887// }
2888// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2889// ShowScrollbar::Always => true,
2890// ShowScrollbar::Never => false,
2891// };
2892
2893// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2894// .into_iter()
2895// .map(|(id, fold)| {
2896// let color = self
2897// .style
2898// .folds
2899// .ellipses
2900// .background
2901// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2902// .color;
2903
2904// (id, fold, color)
2905// })
2906// .collect();
2907
2908// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2909// let newest = editor.selections.newest::<Point>(cx);
2910// SelectionLayout::new(
2911// newest,
2912// editor.selections.line_mode,
2913// editor.cursor_shape,
2914// &snapshot.display_snapshot,
2915// true,
2916// true,
2917// )
2918// .head
2919// });
2920
2921// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2922// start_row..end_row,
2923// &active_rows,
2924// head_for_relative,
2925// is_singleton,
2926// &snapshot,
2927// cx,
2928// );
2929
2930// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2931
2932// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2933
2934// let mut max_visible_line_width = 0.0;
2935// let line_layouts =
2936// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2937// for line_with_invisibles in &line_layouts {
2938// if line_with_invisibles.line.width() > max_visible_line_width {
2939// max_visible_line_width = line_with_invisibles.line.width();
2940// }
2941// }
2942
2943// let style = self.style.clone();
2944// let longest_line_width = layout_line(
2945// snapshot.longest_row(),
2946// &snapshot,
2947// &style,
2948// cx.text_layout_cache(),
2949// )
2950// .width();
2951// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2952// let em_width = style.text.em_width(cx.font_cache());
2953// let (scroll_width, blocks) = self.layout_blocks(
2954// start_row..end_row,
2955// &snapshot,
2956// size.x,
2957// scroll_width,
2958// gutter_padding,
2959// gutter_width,
2960// em_width,
2961// gutter_width + gutter_margin,
2962// line_height,
2963// &style,
2964// &line_layouts,
2965// editor,
2966// cx,
2967// );
2968
2969// let scroll_max = point(
2970// ((scroll_width - text_size.x) / em_width).max(0.0),
2971// max_row as f32,
2972// );
2973
2974// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2975
2976// let autoscrolled = if autoscroll_horizontally {
2977// editor.autoscroll_horizontally(
2978// start_row,
2979// text_size.x,
2980// scroll_width,
2981// em_width,
2982// &line_layouts,
2983// cx,
2984// )
2985// } else {
2986// false
2987// };
2988
2989// if clamped || autoscrolled {
2990// snapshot = editor.snapshot(cx);
2991// }
2992
2993// let style = editor.style(cx);
2994
2995// let mut context_menu = None;
2996// let mut code_actions_indicator = None;
2997// if let Some(newest_selection_head) = newest_selection_head {
2998// if (start_row..end_row).contains(&newest_selection_head.row()) {
2999// if editor.context_menu_visible() {
3000// context_menu =
3001// editor.render_context_menu(newest_selection_head, style.clone(), cx);
3002// }
3003
3004// let active = matches!(
3005// editor.context_menu.read().as_ref(),
3006// Some(crate::ContextMenu::CodeActions(_))
3007// );
3008
3009// code_actions_indicator = editor
3010// .render_code_actions_indicator(&style, active, cx)
3011// .map(|indicator| (newest_selection_head.row(), indicator));
3012// }
3013// }
3014
3015// let visible_rows = start_row..start_row + line_layouts.len() as u32;
3016// let mut hover = editor.hover_state.render(
3017// &snapshot,
3018// &style,
3019// visible_rows,
3020// editor.workspace.as_ref().map(|(w, _)| w.clone()),
3021// cx,
3022// );
3023// let mode = editor.mode;
3024
3025// let mut fold_indicators = editor.render_fold_indicators(
3026// fold_statuses,
3027// &style,
3028// editor.gutter_hovered,
3029// line_height,
3030// gutter_margin,
3031// cx,
3032// );
3033
3034// if let Some((_, context_menu)) = context_menu.as_mut() {
3035// context_menu.layout(
3036// SizeConstraint {
3037// min: gpui::Point::<Pixels>::zero(),
3038// max: point(
3039// cx.window_size().x * 0.7,
3040// (12. * line_height).min((size.y - line_height) / 2.),
3041// ),
3042// },
3043// editor,
3044// cx,
3045// );
3046// }
3047
3048// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
3049// indicator.layout(
3050// SizeConstraint::strict_along(
3051// Axis::Vertical,
3052// line_height * style.code_actions.vertical_scale,
3053// ),
3054// editor,
3055// cx,
3056// );
3057// }
3058
3059// for fold_indicator in fold_indicators.iter_mut() {
3060// if let Some(indicator) = fold_indicator.as_mut() {
3061// indicator.layout(
3062// SizeConstraint::strict_along(
3063// Axis::Vertical,
3064// line_height * style.code_actions.vertical_scale,
3065// ),
3066// editor,
3067// cx,
3068// );
3069// }
3070// }
3071
3072// if let Some((_, hover_popovers)) = hover.as_mut() {
3073// for hover_popover in hover_popovers.iter_mut() {
3074// hover_popover.layout(
3075// SizeConstraint {
3076// min: gpui::Point::<Pixels>::zero(),
3077// max: point(
3078// (120. * em_width) // Default size
3079// .min(size.x / 2.) // Shrink to half of the editor width
3080// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3081// (16. * line_height) // Default size
3082// .min(size.y / 2.) // Shrink to half of the editor height
3083// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3084// ),
3085// },
3086// editor,
3087// cx,
3088// );
3089// }
3090// }
3091
3092// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
3093// let invisible_symbol_style = RunStyle {
3094// color: self.style.whitespace,
3095// font_id: self.style.text.font_id,
3096// underline: Default::default(),
3097// };
3098
3099// (
3100// size,
3101// LayoutState {
3102// mode,
3103// position_map: Arc::new(PositionMap {
3104// size,
3105// scroll_max,
3106// line_layouts,
3107// line_height,
3108// em_width,
3109// em_advance,
3110// snapshot,
3111// }),
3112// visible_display_row_range: start_row..end_row,
3113// wrap_guides,
3114// gutter_size,
3115// gutter_padding,
3116// text_size,
3117// scrollbar_row_range,
3118// show_scrollbars,
3119// is_singleton,
3120// max_row,
3121// gutter_margin,
3122// active_rows,
3123// highlighted_rows,
3124// highlighted_ranges,
3125// fold_ranges,
3126// line_number_layouts,
3127// display_hunks,
3128// blocks,
3129// selections,
3130// context_menu,
3131// code_actions_indicator,
3132// fold_indicators,
3133// tab_invisible: cx.text_layout_cache().layout_str(
3134// "→",
3135// invisible_symbol_font_size,
3136// &[("→".len(), invisible_symbol_style)],
3137// ),
3138// space_invisible: cx.text_layout_cache().layout_str(
3139// "•",
3140// invisible_symbol_font_size,
3141// &[("•".len(), invisible_symbol_style)],
3142// ),
3143// hover_popovers: hover,
3144// },
3145// )
3146// }
3147
3148// fn paint(
3149// &mut self,
3150// bounds: Bounds<Pixels>,
3151// visible_bounds: Bounds<Pixels>,
3152// layout: &mut Self::LayoutState,
3153// editor: &mut Editor,
3154// cx: &mut ViewContext<Editor>,
3155// ) -> Self::PaintState {
3156// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
3157// cx.scene().push_layer(Some(visible_bounds));
3158
3159// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
3160// let text_bounds = Bounds::<Pixels>::new(
3161// bounds.origin + point(layout.gutter_size.x, 0.0),
3162// layout.text_size,
3163// );
3164
3165// Self::attach_mouse_handlers(
3166// &layout.position_map,
3167// layout.hover_popovers.is_some(),
3168// visible_bounds,
3169// text_bounds,
3170// gutter_bounds,
3171// bounds,
3172// cx,
3173// );
3174
3175// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3176// if layout.gutter_size.x > 0. {
3177// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3178// }
3179// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3180
3181// cx.scene().push_layer(Some(bounds));
3182// if !layout.blocks.is_empty {
3183// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3184// }
3185// self.paint_scrollbar(bounds, layout, &editor, cx);
3186// cx.scene().pop_layer();
3187// cx.scene().pop_layer();
3188// }
3189
3190// fn rect_for_text_range(
3191// &self,
3192// range_utf16: Range<usize>,
3193// bounds: Bounds<Pixels>,
3194// _: Bounds<Pixels>,
3195// layout: &Self::LayoutState,
3196// _: &Self::PaintState,
3197// _: &Editor,
3198// _: &ViewContext<Editor>,
3199// ) -> Option<Bounds<Pixels>> {
3200// let text_bounds = Bounds::<Pixels>::new(
3201// bounds.origin + point(layout.gutter_size.x, 0.0),
3202// layout.text_size,
3203// );
3204// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3205// let scroll_position = layout.position_map.snapshot.scroll_position();
3206// let start_row = scroll_position.y as u32;
3207// let scroll_top = scroll_position.y * layout.position_map.line_height;
3208// let scroll_left = scroll_position.x * layout.position_map.em_width;
3209
3210// let range_start = OffsetUtf16(range_utf16.start)
3211// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3212// if range_start.row() < start_row {
3213// return None;
3214// }
3215
3216// let line = &layout
3217// .position_map
3218// .line_layouts
3219// .get((range_start.row() - start_row) as usize)?
3220// .line;
3221// let range_start_x = line.x_for_index(range_start.column() as usize);
3222// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3223// Some(Bounds::<Pixels>::new(
3224// content_origin
3225// + point(
3226// range_start_x,
3227// range_start_y + layout.position_map.line_height,
3228// )
3229// - point(scroll_left, scroll_top),
3230// point(
3231// layout.position_map.em_width,
3232// layout.position_map.line_height,
3233// ),
3234// ))
3235// }
3236
3237// fn debug(
3238// &self,
3239// bounds: Bounds<Pixels>,
3240// _: &Self::LayoutState,
3241// _: &Self::PaintState,
3242// _: &Editor,
3243// _: &ViewContext<Editor>,
3244// ) -> json::Value {
3245// json!({
3246// "type": "BufferElement",
3247// "bounds": bounds.to_json()
3248// })
3249// }
3250// }
3251
3252type BufferRow = u32;
3253
3254pub struct LayoutState {
3255 position_map: Arc<PositionMap>,
3256 gutter_size: Size<Pixels>,
3257 gutter_padding: Pixels,
3258 gutter_margin: Pixels,
3259 text_size: gpui::Size<Pixels>,
3260 mode: EditorMode,
3261 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3262 visible_display_row_range: Range<u32>,
3263 active_rows: BTreeMap<u32, bool>,
3264 highlighted_rows: Option<Range<u32>>,
3265 line_number_layouts: Vec<Option<gpui::Line>>,
3266 display_hunks: Vec<DisplayDiffHunk>,
3267 blocks: Vec<BlockLayout>,
3268 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3269 fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)>,
3270 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3271 scrollbar_row_range: Range<f32>,
3272 show_scrollbars: bool,
3273 is_singleton: bool,
3274 max_row: u32,
3275 context_menu: Option<(DisplayPoint, AnyElement<Editor>)>,
3276 code_actions_indicator: Option<CodeActionsIndicator>,
3277 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement<Editor>>)>,
3278 // fold_indicators: Vec<Option<AnyElement<Editor>>>,
3279 tab_invisible: Line,
3280 space_invisible: Line,
3281}
3282
3283struct CodeActionsIndicator {
3284 row: u32,
3285 element: AnyElement<Editor>,
3286}
3287
3288struct PositionMap {
3289 size: Size<Pixels>,
3290 line_height: Pixels,
3291 scroll_max: gpui::Point<f32>,
3292 em_width: Pixels,
3293 em_advance: Pixels,
3294 line_layouts: Vec<LineWithInvisibles>,
3295 snapshot: EditorSnapshot,
3296}
3297
3298#[derive(Debug, Copy, Clone)]
3299pub struct PointForPosition {
3300 pub previous_valid: DisplayPoint,
3301 pub next_valid: DisplayPoint,
3302 pub exact_unclipped: DisplayPoint,
3303 pub column_overshoot_after_line_end: u32,
3304}
3305
3306impl PointForPosition {
3307 #[cfg(test)]
3308 pub fn valid(valid: DisplayPoint) -> Self {
3309 Self {
3310 previous_valid: valid,
3311 next_valid: valid,
3312 exact_unclipped: valid,
3313 column_overshoot_after_line_end: 0,
3314 }
3315 }
3316
3317 pub fn as_valid(&self) -> Option<DisplayPoint> {
3318 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3319 Some(self.previous_valid)
3320 } else {
3321 None
3322 }
3323 }
3324}
3325
3326impl PositionMap {
3327 fn point_for_position(
3328 &self,
3329 text_bounds: Bounds<Pixels>,
3330 position: gpui::Point<Pixels>,
3331 ) -> PointForPosition {
3332 let scroll_position = self.snapshot.scroll_position();
3333 let position = position - text_bounds.origin;
3334 let y = position.y.max(px(0.)).min(self.size.width);
3335 let x = position.x + (scroll_position.x * self.em_width);
3336 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3337
3338 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3339 .line_layouts
3340 .get(row as usize - scroll_position.y as usize)
3341 .map(|&LineWithInvisibles { ref line, .. }| line)
3342 {
3343 if let Some(ix) = line.index_for_x(x) {
3344 (ix as u32, px(0.))
3345 } else {
3346 (line.len as u32, px(0.).max(x - line.width))
3347 }
3348 } else {
3349 (0, x)
3350 };
3351
3352 let mut exact_unclipped = DisplayPoint::new(row, column);
3353 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3354 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3355
3356 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3357 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3358 PointForPosition {
3359 previous_valid,
3360 next_valid,
3361 exact_unclipped,
3362 column_overshoot_after_line_end,
3363 }
3364 }
3365}
3366
3367struct BlockLayout {
3368 row: u32,
3369 element: AnyElement<Editor>,
3370 available_space: Size<AvailableSpace>,
3371 style: BlockStyle,
3372}
3373
3374fn layout_line(
3375 row: u32,
3376 snapshot: &EditorSnapshot,
3377 style: &EditorStyle,
3378 cx: &WindowContext,
3379) -> Result<Line> {
3380 let mut line = snapshot.line(row);
3381
3382 if line.len() > MAX_LINE_LEN {
3383 let mut len = MAX_LINE_LEN;
3384 while !line.is_char_boundary(len) {
3385 len -= 1;
3386 }
3387
3388 line.truncate(len);
3389 }
3390
3391 Ok(cx
3392 .text_system()
3393 .layout_text(
3394 &line,
3395 style.text.font_size.to_pixels(cx.rem_size()),
3396 &[TextRun {
3397 len: snapshot.line_len(row) as usize,
3398 font: style.text.font(),
3399 color: Hsla::default(),
3400 underline: None,
3401 }],
3402 None,
3403 )?
3404 .pop()
3405 .unwrap())
3406}
3407
3408#[derive(Debug)]
3409pub struct Cursor {
3410 origin: gpui::Point<Pixels>,
3411 block_width: Pixels,
3412 line_height: Pixels,
3413 color: Hsla,
3414 shape: CursorShape,
3415 block_text: Option<Line>,
3416}
3417
3418impl Cursor {
3419 pub fn new(
3420 origin: gpui::Point<Pixels>,
3421 block_width: Pixels,
3422 line_height: Pixels,
3423 color: Hsla,
3424 shape: CursorShape,
3425 block_text: Option<Line>,
3426 ) -> Cursor {
3427 Cursor {
3428 origin,
3429 block_width,
3430 line_height,
3431 color,
3432 shape,
3433 block_text,
3434 }
3435 }
3436
3437 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3438 Bounds {
3439 origin: self.origin + origin,
3440 size: size(self.block_width, self.line_height),
3441 }
3442 }
3443
3444 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3445 let bounds = match self.shape {
3446 CursorShape::Bar => Bounds {
3447 origin: self.origin + origin,
3448 size: size(px(2.0), self.line_height),
3449 },
3450 CursorShape::Block | CursorShape::Hollow => Bounds {
3451 origin: self.origin + origin,
3452 size: size(self.block_width, self.line_height),
3453 },
3454 CursorShape::Underscore => Bounds {
3455 origin: self.origin
3456 + origin
3457 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3458 size: size(self.block_width, px(2.0)),
3459 },
3460 };
3461
3462 //Draw background or border quad
3463 if matches!(self.shape, CursorShape::Hollow) {
3464 cx.paint_quad(
3465 bounds,
3466 Corners::default(),
3467 transparent_black(),
3468 Edges::all(px(1.)),
3469 self.color,
3470 );
3471 } else {
3472 cx.paint_quad(
3473 bounds,
3474 Corners::default(),
3475 self.color,
3476 Edges::default(),
3477 transparent_black(),
3478 );
3479 }
3480
3481 if let Some(block_text) = &self.block_text {
3482 block_text.paint(self.origin + origin, self.line_height, cx);
3483 }
3484 }
3485
3486 pub fn shape(&self) -> CursorShape {
3487 self.shape
3488 }
3489}
3490
3491#[derive(Debug)]
3492pub struct HighlightedRange {
3493 pub start_y: Pixels,
3494 pub line_height: Pixels,
3495 pub lines: Vec<HighlightedRangeLine>,
3496 pub color: Hsla,
3497 pub corner_radius: Pixels,
3498}
3499
3500#[derive(Debug)]
3501pub struct HighlightedRangeLine {
3502 pub start_x: Pixels,
3503 pub end_x: Pixels,
3504}
3505
3506impl HighlightedRange {
3507 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3508 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3509 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3510 self.paint_lines(
3511 self.start_y + self.line_height,
3512 &self.lines[1..],
3513 bounds,
3514 cx,
3515 );
3516 } else {
3517 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3518 }
3519 }
3520
3521 fn paint_lines(
3522 &self,
3523 start_y: Pixels,
3524 lines: &[HighlightedRangeLine],
3525 bounds: Bounds<Pixels>,
3526 cx: &mut WindowContext,
3527 ) {
3528 if lines.is_empty() {
3529 return;
3530 }
3531
3532 let first_line = lines.first().unwrap();
3533 let last_line = lines.last().unwrap();
3534
3535 let first_top_left = point(first_line.start_x, start_y);
3536 let first_top_right = point(first_line.end_x, start_y);
3537
3538 let curve_height = point(Pixels::ZERO, self.corner_radius);
3539 let curve_width = |start_x: Pixels, end_x: Pixels| {
3540 let max = (end_x - start_x) / 2.;
3541 let width = if max < self.corner_radius {
3542 max
3543 } else {
3544 self.corner_radius
3545 };
3546
3547 point(width, Pixels::ZERO)
3548 };
3549
3550 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3551 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3552 path.curve_to(first_top_right + curve_height, first_top_right);
3553
3554 let mut iter = lines.iter().enumerate().peekable();
3555 while let Some((ix, line)) = iter.next() {
3556 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3557
3558 if let Some((_, next_line)) = iter.peek() {
3559 let next_top_right = point(next_line.end_x, bottom_right.y);
3560
3561 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3562 Ordering::Equal => {
3563 path.line_to(bottom_right);
3564 }
3565 Ordering::Less => {
3566 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3567 path.line_to(bottom_right - curve_height);
3568 if self.corner_radius > Pixels::ZERO {
3569 path.curve_to(bottom_right - curve_width, bottom_right);
3570 }
3571 path.line_to(next_top_right + curve_width);
3572 if self.corner_radius > Pixels::ZERO {
3573 path.curve_to(next_top_right + curve_height, next_top_right);
3574 }
3575 }
3576 Ordering::Greater => {
3577 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3578 path.line_to(bottom_right - curve_height);
3579 if self.corner_radius > Pixels::ZERO {
3580 path.curve_to(bottom_right + curve_width, bottom_right);
3581 }
3582 path.line_to(next_top_right - curve_width);
3583 if self.corner_radius > Pixels::ZERO {
3584 path.curve_to(next_top_right + curve_height, next_top_right);
3585 }
3586 }
3587 }
3588 } else {
3589 let curve_width = curve_width(line.start_x, line.end_x);
3590 path.line_to(bottom_right - curve_height);
3591 if self.corner_radius > Pixels::ZERO {
3592 path.curve_to(bottom_right - curve_width, bottom_right);
3593 }
3594
3595 let bottom_left = point(line.start_x, bottom_right.y);
3596 path.line_to(bottom_left + curve_width);
3597 if self.corner_radius > Pixels::ZERO {
3598 path.curve_to(bottom_left - curve_height, bottom_left);
3599 }
3600 }
3601 }
3602
3603 if first_line.start_x > last_line.start_x {
3604 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3605 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3606 path.line_to(second_top_left + curve_height);
3607 if self.corner_radius > Pixels::ZERO {
3608 path.curve_to(second_top_left + curve_width, second_top_left);
3609 }
3610 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3611 path.line_to(first_bottom_left - curve_width);
3612 if self.corner_radius > Pixels::ZERO {
3613 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3614 }
3615 }
3616
3617 path.line_to(first_top_left + curve_height);
3618 if self.corner_radius > Pixels::ZERO {
3619 path.curve_to(first_top_left + top_curve_width, first_top_left);
3620 }
3621 path.line_to(first_top_right - top_curve_width);
3622
3623 cx.paint_path(path, self.color);
3624 }
3625}
3626
3627// fn range_to_bounds(
3628// range: &Range<DisplayPoint>,
3629// content_origin: gpui::Point<Pixels>,
3630// scroll_left: f32,
3631// scroll_top: f32,
3632// visible_row_range: &Range<u32>,
3633// line_end_overshoot: f32,
3634// position_map: &PositionMap,
3635// ) -> impl Iterator<Item = Bounds<Pixels>> {
3636// let mut bounds: SmallVec<[Bounds<Pixels>; 1]> = SmallVec::new();
3637
3638// if range.start == range.end {
3639// return bounds.into_iter();
3640// }
3641
3642// let start_row = visible_row_range.start;
3643// let end_row = visible_row_range.end;
3644
3645// let row_range = if range.end.column() == 0 {
3646// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3647// } else {
3648// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
3649// };
3650
3651// let first_y =
3652// content_origin.y + row_range.start as f32 * position_map.line_height - scroll_top;
3653
3654// for (idx, row) in row_range.enumerate() {
3655// let line_layout = &position_map.line_layouts[(row - start_row) as usize].line;
3656
3657// let start_x = if row == range.start.row() {
3658// content_origin.x + line_layout.x_for_index(range.start.column() as usize)
3659// - scroll_left
3660// } else {
3661// content_origin.x - scroll_left
3662// };
3663
3664// let end_x = if row == range.end.row() {
3665// content_origin.x + line_layout.x_for_index(range.end.column() as usize) - scroll_left
3666// } else {
3667// content_origin.x + line_layout.width() + line_end_overshoot - scroll_left
3668// };
3669
3670// bounds.push(Bounds::<Pixels>::from_points(
3671// point(start_x, first_y + position_map.line_height * idx as f32),
3672// point(end_x, first_y + position_map.line_height * (idx + 1) as f32),
3673// ))
3674// }
3675
3676// bounds.into_iter()
3677// }
3678
3679pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3680 (delta.pow(1.5) / 100.0).into()
3681}
3682
3683fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3684 (delta.pow(1.2) / 300.0).into()
3685}
3686
3687// #[cfg(test)]
3688// mod tests {
3689// use super::*;
3690// use crate::{
3691// display_map::{BlockDisposition, BlockProperties},
3692// editor_tests::{init_test, update_test_language_settings},
3693// Editor, MultiBuffer,
3694// };
3695// use gpui::TestAppContext;
3696// use language::language_settings;
3697// use log::info;
3698// use std::{num::NonZeroU32, sync::Arc};
3699// use util::test::sample_text;
3700
3701// #[gpui::test]
3702// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3703// init_test(cx, |_| {});
3704// let editor = cx
3705// .add_window(|cx| {
3706// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3707// Editor::new(EditorMode::Full, buffer, None, None, cx)
3708// })
3709// .root(cx);
3710// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3711
3712// let layouts = editor.update(cx, |editor, cx| {
3713// let snapshot = editor.snapshot(cx);
3714// element
3715// .layout_line_numbers(
3716// 0..6,
3717// &Default::default(),
3718// DisplayPoint::new(0, 0),
3719// false,
3720// &snapshot,
3721// cx,
3722// )
3723// .0
3724// });
3725// assert_eq!(layouts.len(), 6);
3726
3727// let relative_rows = editor.update(cx, |editor, cx| {
3728// let snapshot = editor.snapshot(cx);
3729// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3730// });
3731// assert_eq!(relative_rows[&0], 3);
3732// assert_eq!(relative_rows[&1], 2);
3733// assert_eq!(relative_rows[&2], 1);
3734// // current line has no relative number
3735// assert_eq!(relative_rows[&4], 1);
3736// assert_eq!(relative_rows[&5], 2);
3737
3738// // works if cursor is before screen
3739// let relative_rows = editor.update(cx, |editor, cx| {
3740// let snapshot = editor.snapshot(cx);
3741
3742// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3743// });
3744// assert_eq!(relative_rows.len(), 3);
3745// assert_eq!(relative_rows[&3], 2);
3746// assert_eq!(relative_rows[&4], 3);
3747// assert_eq!(relative_rows[&5], 4);
3748
3749// // works if cursor is after screen
3750// let relative_rows = editor.update(cx, |editor, cx| {
3751// let snapshot = editor.snapshot(cx);
3752
3753// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3754// });
3755// assert_eq!(relative_rows.len(), 3);
3756// assert_eq!(relative_rows[&0], 5);
3757// assert_eq!(relative_rows[&1], 4);
3758// assert_eq!(relative_rows[&2], 3);
3759// }
3760
3761// #[gpui::test]
3762// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3763// init_test(cx, |_| {});
3764
3765// let editor = cx
3766// .add_window(|cx| {
3767// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3768// Editor::new(EditorMode::Full, buffer, None, None, cx)
3769// })
3770// .root(cx);
3771// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3772// let (_, state) = editor.update(cx, |editor, cx| {
3773// editor.cursor_shape = CursorShape::Block;
3774// editor.change_selections(None, cx, |s| {
3775// s.select_ranges([
3776// Point::new(0, 0)..Point::new(1, 0),
3777// Point::new(3, 2)..Point::new(3, 3),
3778// Point::new(5, 6)..Point::new(6, 0),
3779// ]);
3780// });
3781// element.layout(
3782// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3783// editor,
3784// cx,
3785// )
3786// });
3787// assert_eq!(state.selections.len(), 1);
3788// let local_selections = &state.selections[0].1;
3789// assert_eq!(local_selections.len(), 3);
3790// // moves cursor back one line
3791// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3792// assert_eq!(
3793// local_selections[0].range,
3794// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3795// );
3796
3797// // moves cursor back one column
3798// assert_eq!(
3799// local_selections[1].range,
3800// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3801// );
3802// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3803
3804// // leaves cursor on the max point
3805// assert_eq!(
3806// local_selections[2].range,
3807// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3808// );
3809// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3810
3811// // active lines does not include 1 (even though the range of the selection does)
3812// assert_eq!(
3813// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3814// vec![0, 3, 5, 6]
3815// );
3816
3817// // multi-buffer support
3818// // in DisplayPoint co-ordinates, this is what we're dealing with:
3819// // 0: [[file
3820// // 1: header]]
3821// // 2: aaaaaa
3822// // 3: bbbbbb
3823// // 4: cccccc
3824// // 5:
3825// // 6: ...
3826// // 7: ffffff
3827// // 8: gggggg
3828// // 9: hhhhhh
3829// // 10:
3830// // 11: [[file
3831// // 12: header]]
3832// // 13: bbbbbb
3833// // 14: cccccc
3834// // 15: dddddd
3835// let editor = cx
3836// .add_window(|cx| {
3837// let buffer = MultiBuffer::build_multi(
3838// [
3839// (
3840// &(sample_text(8, 6, 'a') + "\n"),
3841// vec![
3842// Point::new(0, 0)..Point::new(3, 0),
3843// Point::new(4, 0)..Point::new(7, 0),
3844// ],
3845// ),
3846// (
3847// &(sample_text(8, 6, 'a') + "\n"),
3848// vec![Point::new(1, 0)..Point::new(3, 0)],
3849// ),
3850// ],
3851// cx,
3852// );
3853// Editor::new(EditorMode::Full, buffer, None, None, cx)
3854// })
3855// .root(cx);
3856// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3857// let (_, state) = editor.update(cx, |editor, cx| {
3858// editor.cursor_shape = CursorShape::Block;
3859// editor.change_selections(None, cx, |s| {
3860// s.select_display_ranges([
3861// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3862// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3863// ]);
3864// });
3865// element.layout(
3866// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3867// editor,
3868// cx,
3869// )
3870// });
3871
3872// assert_eq!(state.selections.len(), 1);
3873// let local_selections = &state.selections[0].1;
3874// assert_eq!(local_selections.len(), 2);
3875
3876// // moves cursor on excerpt boundary back a line
3877// // and doesn't allow selection to bleed through
3878// assert_eq!(
3879// local_selections[0].range,
3880// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3881// );
3882// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3883
3884// // moves cursor on buffer boundary back two lines
3885// // and doesn't allow selection to bleed through
3886// assert_eq!(
3887// local_selections[1].range,
3888// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3889// );
3890// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3891// }
3892
3893// #[gpui::test]
3894// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3895// init_test(cx, |_| {});
3896
3897// let editor = cx
3898// .add_window(|cx| {
3899// let buffer = MultiBuffer::build_simple("", cx);
3900// Editor::new(EditorMode::Full, buffer, None, None, cx)
3901// })
3902// .root(cx);
3903
3904// editor.update(cx, |editor, cx| {
3905// editor.set_placeholder_text("hello", cx);
3906// editor.insert_blocks(
3907// [BlockProperties {
3908// style: BlockStyle::Fixed,
3909// disposition: BlockDisposition::Above,
3910// height: 3,
3911// position: Anchor::min(),
3912// render: Arc::new(|_| Empty::new().into_any),
3913// }],
3914// None,
3915// cx,
3916// );
3917
3918// // Blur the editor so that it displays placeholder text.
3919// cx.blur();
3920// });
3921
3922// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3923// let (size, mut state) = editor.update(cx, |editor, cx| {
3924// element.layout(
3925// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3926// editor,
3927// cx,
3928// )
3929// });
3930
3931// assert_eq!(state.position_map.line_layouts.len(), 4);
3932// assert_eq!(
3933// state
3934// .line_number_layouts
3935// .iter()
3936// .map(Option::is_some)
3937// .collect::<Vec<_>>(),
3938// &[false, false, false, true]
3939// );
3940
3941// // Don't panic.
3942// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3943// editor.update(cx, |editor, cx| {
3944// element.paint(bounds, bounds, &mut state, editor, cx);
3945// });
3946// }
3947
3948// #[gpui::test]
3949// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3950// const TAB_SIZE: u32 = 4;
3951
3952// let input_text = "\t \t|\t| a b";
3953// let expected_invisibles = vec![
3954// Invisible::Tab {
3955// line_start_offset: 0,
3956// },
3957// Invisible::Whitespace {
3958// line_offset: TAB_SIZE as usize,
3959// },
3960// Invisible::Tab {
3961// line_start_offset: TAB_SIZE as usize + 1,
3962// },
3963// Invisible::Tab {
3964// line_start_offset: TAB_SIZE as usize * 2 + 1,
3965// },
3966// Invisible::Whitespace {
3967// line_offset: TAB_SIZE as usize * 3 + 1,
3968// },
3969// Invisible::Whitespace {
3970// line_offset: TAB_SIZE as usize * 3 + 3,
3971// },
3972// ];
3973// assert_eq!(
3974// expected_invisibles.len(),
3975// input_text
3976// .chars()
3977// .filter(|initial_char| initial_char.is_whitespace())
3978// .count(),
3979// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3980// );
3981
3982// init_test(cx, |s| {
3983// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3984// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3985// });
3986
3987// let actual_invisibles =
3988// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3989
3990// assert_eq!(expected_invisibles, actual_invisibles);
3991// }
3992
3993// #[gpui::test]
3994// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3995// init_test(cx, |s| {
3996// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3997// s.defaults.tab_size = NonZeroU32::new(4);
3998// });
3999
4000// for editor_mode_without_invisibles in [
4001// EditorMode::SingleLine,
4002// EditorMode::AutoHeight { max_lines: 100 },
4003// ] {
4004// let invisibles = collect_invisibles_from_new_editor(
4005// cx,
4006// editor_mode_without_invisibles,
4007// "\t\t\t| | a b",
4008// 500.0,
4009// );
4010// assert!(invisibles.is_empty,
4011// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4012// }
4013// }
4014
4015// #[gpui::test]
4016// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4017// let tab_size = 4;
4018// let input_text = "a\tbcd ".repeat(9);
4019// let repeated_invisibles = [
4020// Invisible::Tab {
4021// line_start_offset: 1,
4022// },
4023// Invisible::Whitespace {
4024// line_offset: tab_size as usize + 3,
4025// },
4026// Invisible::Whitespace {
4027// line_offset: tab_size as usize + 4,
4028// },
4029// Invisible::Whitespace {
4030// line_offset: tab_size as usize + 5,
4031// },
4032// ];
4033// let expected_invisibles = std::iter::once(repeated_invisibles)
4034// .cycle()
4035// .take(9)
4036// .flatten()
4037// .collect::<Vec<_>>();
4038// assert_eq!(
4039// expected_invisibles.len(),
4040// input_text
4041// .chars()
4042// .filter(|initial_char| initial_char.is_whitespace())
4043// .count(),
4044// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4045// );
4046// info!("Expected invisibles: {expected_invisibles:?}");
4047
4048// init_test(cx, |_| {});
4049
4050// // Put the same string with repeating whitespace pattern into editors of various size,
4051// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4052// let resize_step = 10.0;
4053// let mut editor_width = 200.0;
4054// while editor_width <= 1000.0 {
4055// update_test_language_settings(cx, |s| {
4056// s.defaults.tab_size = NonZeroU32::new(tab_size);
4057// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4058// s.defaults.preferred_line_length = Some(editor_width as u32);
4059// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4060// });
4061
4062// let actual_invisibles =
4063// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
4064
4065// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4066// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4067// let mut i = 0;
4068// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4069// i = actual_index;
4070// match expected_invisibles.get(i) {
4071// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4072// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4073// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4074// _ => {
4075// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4076// }
4077// },
4078// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4079// }
4080// }
4081// let missing_expected_invisibles = &expected_invisibles[i + 1..];
4082// assert!(
4083// missing_expected_invisibles.is_empty,
4084// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4085// );
4086
4087// editor_width += resize_step;
4088// }
4089// }
4090
4091// fn collect_invisibles_from_new_editor(
4092// cx: &mut TestAppContext,
4093// editor_mode: EditorMode,
4094// input_text: &str,
4095// editor_width: f32,
4096// ) -> Vec<Invisible> {
4097// info!(
4098// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
4099// );
4100// let editor = cx
4101// .add_window(|cx| {
4102// let buffer = MultiBuffer::build_simple(&input_text, cx);
4103// Editor::new(editor_mode, buffer, None, None, cx)
4104// })
4105// .root(cx);
4106
4107// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
4108// let (_, layout_state) = editor.update(cx, |editor, cx| {
4109// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4110// editor.set_wrap_width(Some(editor_width), cx);
4111
4112// element.layout(
4113// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
4114// editor,
4115// cx,
4116// )
4117// });
4118
4119// layout_state
4120// .position_map
4121// .line_layouts
4122// .iter()
4123// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
4124// .flatten()
4125// .cloned()
4126// .collect()
4127// }
4128// }
4129
4130fn register_action<T: Action>(
4131 cx: &mut ViewContext<Editor>,
4132 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4133) {
4134 cx.on_action(TypeId::of::<T>(), move |editor, action, phase, cx| {
4135 let action = action.downcast_ref().unwrap();
4136 if phase == DispatchPhase::Bubble {
4137 listener(editor, action, cx);
4138 }
4139 })
4140}