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, Hsla, Line, MouseButton, MouseDownEvent, MouseMoveEvent,
24 MouseUpEvent, ParentElement, Pixels, ScrollWheelEvent, Size, Style, Styled, TextRun, TextStyle,
25 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 style: EditorStyle,
115}
116
117impl EditorElement {
118 pub fn new(style: EditorStyle) -> Self {
119 Self { style }
120 }
121
122 fn mouse_down(
123 editor: &mut Editor,
124 event: &MouseDownEvent,
125 position_map: &PositionMap,
126 text_bounds: Bounds<Pixels>,
127 gutter_bounds: Bounds<Pixels>,
128 cx: &mut ViewContext<Editor>,
129 ) -> bool {
130 let mut click_count = event.click_count;
131 let modifiers = event.modifiers;
132
133 if gutter_bounds.contains_point(&event.position) {
134 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
135 } else if !text_bounds.contains_point(&event.position) {
136 return false;
137 }
138
139 let point_for_position = position_map.point_for_position(text_bounds, event.position);
140 let position = point_for_position.previous_valid;
141 if modifiers.shift && modifiers.alt {
142 editor.select(
143 SelectPhase::BeginColumnar {
144 position,
145 goal_column: point_for_position.exact_unclipped.column(),
146 },
147 cx,
148 );
149 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
150 editor.select(
151 SelectPhase::Extend {
152 position,
153 click_count,
154 },
155 cx,
156 );
157 } else {
158 editor.select(
159 SelectPhase::Begin {
160 position,
161 add: modifiers.alt,
162 click_count,
163 },
164 cx,
165 );
166 }
167
168 true
169 }
170
171 // fn mouse_right_down(
172 // editor: &mut Editor,
173 // position: gpui::Point<Pixels>,
174 // position_map: &PositionMap,
175 // text_bounds: Bounds<Pixels>,
176 // cx: &mut EventContext<Editor>,
177 // ) -> bool {
178 // if !text_bounds.contains_point(position) {
179 // return false;
180 // }
181 // let point_for_position = position_map.point_for_position(text_bounds, position);
182 // mouse_context_menu::deploy_context_menu(
183 // editor,
184 // position,
185 // point_for_position.previous_valid,
186 // cx,
187 // );
188 // true
189 // }
190
191 fn mouse_up(
192 editor: &mut Editor,
193 event: &MouseUpEvent,
194 position_map: &PositionMap,
195 text_bounds: Bounds<Pixels>,
196 cx: &mut ViewContext<Editor>,
197 ) -> bool {
198 let end_selection = editor.has_pending_selection();
199 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
200
201 if end_selection {
202 editor.select(SelectPhase::End, cx);
203 }
204
205 if !pending_nonempty_selections
206 && event.modifiers.command
207 && text_bounds.contains_point(&event.position)
208 {
209 let point = position_map.point_for_position(text_bounds, event.position);
210 let could_be_inlay = point.as_valid().is_none();
211 let split = event.modifiers.alt;
212 if event.modifiers.shift || could_be_inlay {
213 go_to_fetched_type_definition(editor, point, split, cx);
214 } else {
215 go_to_fetched_definition(editor, point, split, cx);
216 }
217
218 return true;
219 }
220
221 end_selection
222 }
223
224 fn mouse_moved(
225 editor: &mut Editor,
226 event: &MouseMoveEvent,
227 position_map: &PositionMap,
228 text_bounds: Bounds<Pixels>,
229 gutter_bounds: Bounds<Pixels>,
230 cx: &mut ViewContext<Editor>,
231 ) -> bool {
232 let modifiers = event.modifiers;
233 if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
234 let point_for_position = position_map.point_for_position(text_bounds, event.position);
235 let mut scroll_delta = gpui::Point::<f32>::zero();
236 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
237 let top = text_bounds.origin.y + vertical_margin;
238 let bottom = text_bounds.lower_left().y - vertical_margin;
239 if event.position.y < top {
240 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
241 }
242 if event.position.y > bottom {
243 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
244 }
245
246 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
247 let left = text_bounds.origin.x + horizontal_margin;
248 let right = text_bounds.upper_right().x - horizontal_margin;
249 if event.position.x < left {
250 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
251 }
252 if event.position.x > right {
253 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
254 }
255
256 editor.select(
257 SelectPhase::Update {
258 position: point_for_position.previous_valid,
259 goal_column: point_for_position.exact_unclipped.column(),
260 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
261 .clamp(&gpui::Point::zero(), &position_map.scroll_max),
262 },
263 cx,
264 );
265 }
266
267 let text_hovered = text_bounds.contains_point(&event.position);
268 let gutter_hovered = gutter_bounds.contains_point(&event.position);
269 editor.set_gutter_hovered(gutter_hovered, cx);
270
271 // Don't trigger hover popover if mouse is hovering over context menu
272 if text_hovered {
273 let point_for_position = position_map.point_for_position(text_bounds, event.position);
274
275 match point_for_position.as_valid() {
276 Some(point) => {
277 update_go_to_definition_link(
278 editor,
279 Some(GoToDefinitionTrigger::Text(point)),
280 modifiers.command,
281 modifiers.shift,
282 cx,
283 );
284 hover_at(editor, Some(point), cx);
285 }
286 None => {
287 update_inlay_link_and_hover_points(
288 &position_map.snapshot,
289 point_for_position,
290 editor,
291 modifiers.command,
292 modifiers.shift,
293 cx,
294 );
295 }
296 }
297
298 true
299 } else {
300 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
301 hover_at(editor, None, cx);
302 gutter_hovered
303 }
304 }
305
306 fn scroll(
307 editor: &mut Editor,
308 event: &ScrollWheelEvent,
309 position_map: &PositionMap,
310 bounds: Bounds<Pixels>,
311 cx: &mut ViewContext<Editor>,
312 ) -> bool {
313 if !bounds.contains_point(&event.position) {
314 return false;
315 }
316
317 let line_height = position_map.line_height;
318 let max_glyph_width = position_map.em_width;
319 let (delta, axis) = match event.delta {
320 gpui::ScrollDelta::Pixels(mut pixels) => {
321 //Trackpad
322 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
323 (pixels, axis)
324 }
325
326 gpui::ScrollDelta::Lines(lines) => {
327 //Not trackpad
328 let pixels = point(lines.x * max_glyph_width, lines.y * line_height);
329 (pixels, None)
330 }
331 };
332
333 let scroll_position = position_map.snapshot.scroll_position();
334 let x = f32::from((scroll_position.x * max_glyph_width - delta.x) / max_glyph_width);
335 let y = f32::from((scroll_position.y * line_height - delta.y) / line_height);
336 let scroll_position = point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
337 editor.scroll(scroll_position, axis, cx);
338
339 true
340 }
341
342 fn paint_background(
343 &self,
344 gutter_bounds: Bounds<Pixels>,
345 text_bounds: Bounds<Pixels>,
346 layout: &LayoutState,
347 cx: &mut ViewContext<Editor>,
348 ) {
349 let bounds = gutter_bounds.union(&text_bounds);
350 let scroll_top =
351 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
352 let gutter_bg = cx.theme().colors().editor_gutter_background;
353 cx.paint_quad(
354 gutter_bounds,
355 Corners::default(),
356 gutter_bg,
357 Edges::default(),
358 transparent_black(),
359 );
360 cx.paint_quad(
361 text_bounds,
362 Corners::default(),
363 self.style.background,
364 Edges::default(),
365 transparent_black(),
366 );
367
368 if let EditorMode::Full = layout.mode {
369 let mut active_rows = layout.active_rows.iter().peekable();
370 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
371 let mut end_row = *start_row;
372 while active_rows.peek().map_or(false, |r| {
373 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
374 }) {
375 active_rows.next().unwrap();
376 end_row += 1;
377 }
378
379 if !contains_non_empty_selection {
380 let origin = point(
381 bounds.origin.x,
382 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
383 - scroll_top,
384 );
385 let size = size(
386 bounds.size.width,
387 layout.position_map.line_height * (end_row - start_row + 1) as f32,
388 );
389 let active_line_bg = cx.theme().colors().editor_active_line_background;
390 cx.paint_quad(
391 Bounds { origin, size },
392 Corners::default(),
393 active_line_bg,
394 Edges::default(),
395 transparent_black(),
396 );
397 }
398 }
399
400 if let Some(highlighted_rows) = &layout.highlighted_rows {
401 let origin = point(
402 bounds.origin.x,
403 bounds.origin.y
404 + (layout.position_map.line_height * highlighted_rows.start as f32)
405 - scroll_top,
406 );
407 let size = size(
408 bounds.size.width,
409 layout.position_map.line_height * highlighted_rows.len() as f32,
410 );
411 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
412 cx.paint_quad(
413 Bounds { origin, size },
414 Corners::default(),
415 highlighted_line_bg,
416 Edges::default(),
417 transparent_black(),
418 );
419 }
420
421 let scroll_left =
422 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
423
424 for (wrap_position, active) in layout.wrap_guides.iter() {
425 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
426 - scroll_left;
427
428 if x < text_bounds.origin.x
429 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
430 {
431 continue;
432 }
433
434 let color = if *active {
435 cx.theme().colors().editor_active_wrap_guide
436 } else {
437 cx.theme().colors().editor_wrap_guide
438 };
439 cx.paint_quad(
440 Bounds {
441 origin: point(x, text_bounds.origin.y),
442 size: size(px(1.), text_bounds.size.height),
443 },
444 Corners::default(),
445 color,
446 Edges::default(),
447 transparent_black(),
448 );
449 }
450 }
451 }
452
453 fn paint_gutter(
454 &mut self,
455 bounds: Bounds<Pixels>,
456 layout: &mut LayoutState,
457 editor: &mut Editor,
458 cx: &mut ViewContext<Editor>,
459 ) {
460 let line_height = layout.position_map.line_height;
461
462 let scroll_position = layout.position_map.snapshot.scroll_position();
463 let scroll_top = scroll_position.y * line_height;
464
465 let show_gutter = matches!(
466 ProjectSettings::get_global(cx).git.git_gutter,
467 Some(GitGutterSetting::TrackedFiles)
468 );
469
470 if show_gutter {
471 Self::paint_diff_hunks(bounds, layout, cx);
472 }
473
474 for (ix, line) in layout.line_number_layouts.iter().enumerate() {
475 if let Some(line) = line {
476 let line_origin = bounds.origin
477 + point(
478 bounds.size.width - line.width - layout.gutter_padding,
479 ix as f32 * line_height - (scroll_top % line_height),
480 );
481
482 line.paint(line_origin, line_height, cx);
483 }
484 }
485
486 // todo!("fold indicators")
487 // for (ix, fold_indicator) in layout.fold_indicators.iter_mut().enumerate() {
488 // if let Some(indicator) = fold_indicator.as_mut() {
489 // let position = point(
490 // bounds.width() - layout.gutter_padding,
491 // ix as f32 * line_height - (scroll_top % line_height),
492 // );
493 // let centering_offset = point(
494 // (layout.gutter_padding + layout.gutter_margin - indicator.size().x) / 2.,
495 // (line_height - indicator.size().y) / 2.,
496 // );
497
498 // let indicator_origin = bounds.origin + position + centering_offset;
499
500 // indicator.paint(indicator_origin, visible_bounds, editor, cx);
501 // }
502 // }
503
504 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
505 let available_space = size(
506 AvailableSpace::MinContent,
507 AvailableSpace::Definite(line_height),
508 );
509 let indicator_size = indicator.element.measure(available_space, editor, cx);
510 let mut x = Pixels::ZERO;
511 let mut y = indicator.row as f32 * line_height - scroll_top;
512 // Center indicator.
513 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
514 y += (line_height - indicator_size.height) / 2.;
515 indicator
516 .element
517 .draw(bounds.origin + point(x, y), available_space, editor, cx);
518 }
519 }
520
521 fn paint_diff_hunks(
522 bounds: Bounds<Pixels>,
523 layout: &LayoutState,
524 cx: &mut ViewContext<Editor>,
525 ) {
526 // todo!()
527 // let diff_style = &theme::current(cx).editor.diff.clone();
528 // let line_height = layout.position_map.line_height;
529
530 // let scroll_position = layout.position_map.snapshot.scroll_position();
531 // let scroll_top = scroll_position.y * line_height;
532
533 // for hunk in &layout.display_hunks {
534 // let (display_row_range, status) = match hunk {
535 // //TODO: This rendering is entirely a horrible hack
536 // &DisplayDiffHunk::Folded { display_row: row } => {
537 // let start_y = row as f32 * line_height - scroll_top;
538 // let end_y = start_y + line_height;
539
540 // let width = diff_style.removed_width_em * line_height;
541 // let highlight_origin = bounds.origin + point(-width, start_y);
542 // let highlight_size = point(width * 2., end_y - start_y);
543 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
544
545 // cx.paint_quad(Quad {
546 // bounds: highlight_bounds,
547 // background: Some(diff_style.modified),
548 // border: Border::new(0., Color::transparent_black()).into(),
549 // corner_radii: (1. * line_height).into(),
550 // });
551
552 // continue;
553 // }
554
555 // DisplayDiffHunk::Unfolded {
556 // display_row_range,
557 // status,
558 // } => (display_row_range, status),
559 // };
560
561 // let color = match status {
562 // DiffHunkStatus::Added => diff_style.inserted,
563 // DiffHunkStatus::Modified => diff_style.modified,
564
565 // //TODO: This rendering is entirely a horrible hack
566 // DiffHunkStatus::Removed => {
567 // let row = display_row_range.start;
568
569 // let offset = line_height / 2.;
570 // let start_y = row as f32 * line_height - offset - scroll_top;
571 // let end_y = start_y + line_height;
572
573 // let width = diff_style.removed_width_em * line_height;
574 // let highlight_origin = bounds.origin + point(-width, start_y);
575 // let highlight_size = point(width * 2., end_y - start_y);
576 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
577
578 // cx.paint_quad(Quad {
579 // bounds: highlight_bounds,
580 // background: Some(diff_style.deleted),
581 // border: Border::new(0., Color::transparent_black()).into(),
582 // corner_radii: (1. * line_height).into(),
583 // });
584
585 // continue;
586 // }
587 // };
588
589 // let start_row = display_row_range.start;
590 // let end_row = display_row_range.end;
591
592 // let start_y = start_row as f32 * line_height - scroll_top;
593 // let end_y = end_row as f32 * line_height - scroll_top;
594
595 // let width = diff_style.width_em * line_height;
596 // let highlight_origin = bounds.origin + point(-width, start_y);
597 // let highlight_size = point(width * 2., end_y - start_y);
598 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
599
600 // cx.paint_quad(Quad {
601 // bounds: highlight_bounds,
602 // background: Some(color),
603 // border: Border::new(0., Color::transparent_black()).into(),
604 // corner_radii: (diff_style.corner_radius * line_height).into(),
605 // });
606 // }
607 }
608
609 fn paint_text(
610 &mut self,
611 bounds: Bounds<Pixels>,
612 layout: &mut LayoutState,
613 editor: &mut Editor,
614 cx: &mut ViewContext<Editor>,
615 ) {
616 let scroll_position = layout.position_map.snapshot.scroll_position();
617 let start_row = layout.visible_display_row_range.start;
618 let scroll_top = scroll_position.y * layout.position_map.line_height;
619 let max_glyph_width = layout.position_map.em_width;
620 let scroll_left = scroll_position.x * max_glyph_width;
621 let content_origin = bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
622 let line_end_overshoot = 0.15 * layout.position_map.line_height;
623 let whitespace_setting = editor.buffer.read(cx).settings_at(0, cx).show_whitespaces;
624
625 cx.with_content_mask(ContentMask { bounds }, |cx| {
626 // todo!("cursor region")
627 // cx.scene().push_cursor_region(CursorRegion {
628 // bounds,
629 // style: if !editor.link_go_to_definition_state.definitions.is_empty {
630 // CursorStyle::PointingHand
631 // } else {
632 // CursorStyle::IBeam
633 // },
634 // });
635
636 // todo!("fold ranges")
637 // let fold_corner_radius =
638 // self.style.folds.ellipses.corner_radius_factor * layout.position_map.line_height;
639 // for (id, range, color) in layout.fold_ranges.iter() {
640 // self.paint_highlighted_range(
641 // range.clone(),
642 // *color,
643 // fold_corner_radius,
644 // fold_corner_radius * 2.,
645 // layout,
646 // content_origin,
647 // scroll_top,
648 // scroll_left,
649 // bounds,
650 // cx,
651 // );
652
653 // for bound in range_to_bounds(
654 // &range,
655 // content_origin,
656 // scroll_left,
657 // scroll_top,
658 // &layout.visible_display_row_range,
659 // line_end_overshoot,
660 // &layout.position_map,
661 // ) {
662 // cx.scene().push_cursor_region(CursorRegion {
663 // bounds: bound,
664 // style: CursorStyle::PointingHand,
665 // });
666
667 // let display_row = range.start.row();
668
669 // let buffer_row = DisplayPoint::new(display_row, 0)
670 // .to_point(&layout.position_map.snapshot.display_snapshot)
671 // .row;
672
673 // let view_id = cx.view_id();
674 // cx.scene().push_mouse_region(
675 // MouseRegion::new::<FoldMarkers>(view_id, *id as usize, bound)
676 // .on_click(MouseButton::Left, move |_, editor: &mut Editor, cx| {
677 // editor.unfold_at(&UnfoldAt { buffer_row }, cx)
678 // })
679 // .with_notify_on_hover(true)
680 // .with_notify_on_click(true),
681 // )
682 // }
683 // }
684
685 for (range, color) in &layout.highlighted_ranges {
686 self.paint_highlighted_range(
687 range.clone(),
688 *color,
689 Pixels::ZERO,
690 line_end_overshoot,
691 layout,
692 content_origin,
693 scroll_top,
694 scroll_left,
695 bounds,
696 cx,
697 );
698 }
699
700 let mut cursors = SmallVec::<[Cursor; 32]>::new();
701 let corner_radius = 0.15 * layout.position_map.line_height;
702 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
703
704 for (selection_style, selections) in &layout.selections {
705 for selection in selections {
706 self.paint_highlighted_range(
707 selection.range.clone(),
708 selection_style.selection,
709 corner_radius,
710 corner_radius * 2.,
711 layout,
712 content_origin,
713 scroll_top,
714 scroll_left,
715 bounds,
716 cx,
717 );
718
719 if selection.is_local && !selection.range.is_empty() {
720 invisible_display_ranges.push(selection.range.clone());
721 }
722
723 if !selection.is_local || editor.show_local_cursors(cx) {
724 let cursor_position = selection.head;
725 if layout
726 .visible_display_row_range
727 .contains(&cursor_position.row())
728 {
729 let cursor_row_layout = &layout.position_map.line_layouts
730 [(cursor_position.row() - start_row) as usize]
731 .line;
732 let cursor_column = cursor_position.column() as usize;
733
734 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
735 let mut block_width = cursor_row_layout.x_for_index(cursor_column + 1)
736 - cursor_character_x;
737 if block_width == Pixels::ZERO {
738 block_width = layout.position_map.em_width;
739 }
740 let block_text = if let CursorShape::Block = selection.cursor_shape {
741 layout
742 .position_map
743 .snapshot
744 .chars_at(cursor_position)
745 .next()
746 .and_then(|(character, _)| {
747 let text = character.to_string();
748 cx.text_system()
749 .layout_text(
750 &text,
751 cursor_row_layout.font_size,
752 &[TextRun {
753 len: text.len(),
754 font: self.style.text.font(),
755 color: self.style.background,
756 underline: None,
757 }],
758 None,
759 )
760 .unwrap()
761 .pop()
762 })
763 } else {
764 None
765 };
766
767 let x = cursor_character_x - scroll_left;
768 let y = cursor_position.row() as f32 * layout.position_map.line_height
769 - scroll_top;
770 if selection.is_newest {
771 editor.pixel_position_of_newest_cursor = Some(point(
772 bounds.origin.x + x + block_width / 2.,
773 bounds.origin.y + y + layout.position_map.line_height / 2.,
774 ));
775 }
776 cursors.push(Cursor {
777 color: selection_style.cursor,
778 block_width,
779 origin: point(x, y),
780 line_height: layout.position_map.line_height,
781 shape: selection.cursor_shape,
782 block_text,
783 });
784 }
785 }
786 }
787 }
788
789 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
790 let row = start_row + ix as u32;
791 line_with_invisibles.draw(
792 layout,
793 row,
794 scroll_top,
795 content_origin,
796 scroll_left,
797 whitespace_setting,
798 &invisible_display_ranges,
799 cx,
800 )
801 }
802
803 cx.with_z_index(0, |cx| {
804 for cursor in cursors {
805 cursor.paint(content_origin, cx);
806 }
807 });
808
809 if let Some((position, context_menu)) = layout.context_menu.as_mut() {
810 cx.with_z_index(1, |cx| {
811 let line_height = self.style.text.line_height_in_pixels(cx.rem_size());
812 let available_space = size(
813 AvailableSpace::MinContent,
814 AvailableSpace::Definite(
815 (12. * line_height).min((bounds.size.height - line_height) / 2.),
816 ),
817 );
818 let context_menu_size = context_menu.measure(available_space, editor, cx);
819
820 let cursor_row_layout = &layout.position_map.line_layouts
821 [(position.row() - start_row) as usize]
822 .line;
823 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_left;
824 let y =
825 (position.row() + 1) as f32 * layout.position_map.line_height - scroll_top;
826 let mut list_origin = content_origin + point(x, y);
827 let list_width = context_menu_size.width;
828 let list_height = context_menu_size.height;
829
830 // Snap the right edge of the list to the right edge of the window if
831 // its horizontal bounds overflow.
832 if list_origin.x + list_width > cx.viewport_size().width {
833 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
834 }
835
836 if list_origin.y + list_height > bounds.lower_right().y {
837 list_origin.y -= layout.position_map.line_height - list_height;
838 }
839
840 context_menu.draw(list_origin, available_space, editor, cx);
841 })
842 }
843
844 // if let Some((position, hover_popovers)) = layout.hover_popovers.as_mut() {
845 // cx.scene().push_stacking_context(None, None);
846
847 // // This is safe because we check on layout whether the required row is available
848 // let hovered_row_layout =
849 // &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
850
851 // // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
852 // // height. This is the size we will use to decide whether to render popovers above or below
853 // // the hovered line.
854 // let first_size = hover_popovers[0].size();
855 // let height_to_reserve = first_size.y
856 // + 1.5 * MIN_POPOVER_LINE_HEIGHT as f32 * layout.position_map.line_height;
857
858 // // Compute Hovered Point
859 // let x = hovered_row_layout.x_for_index(position.column() as usize) - scroll_left;
860 // let y = position.row() as f32 * layout.position_map.line_height - scroll_top;
861 // let hovered_point = content_origin + point(x, y);
862
863 // if hovered_point.y - height_to_reserve > 0.0 {
864 // // There is enough space above. Render popovers above the hovered point
865 // let mut current_y = hovered_point.y;
866 // for hover_popover in hover_popovers {
867 // let size = hover_popover.size();
868 // let mut popover_origin = point(hovered_point.x, current_y - size.y);
869
870 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
871 // if x_out_of_bounds < 0.0 {
872 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
873 // }
874
875 // hover_popover.paint(
876 // popover_origin,
877 // Bounds::<Pixels>::from_points(
878 // gpui::Point::<Pixels>::zero(),
879 // point(f32::MAX, f32::MAX),
880 // ), // Let content bleed outside of editor
881 // editor,
882 // cx,
883 // );
884
885 // current_y = popover_origin.y - HOVER_POPOVER_GAP;
886 // }
887 // } else {
888 // // There is not enough space above. Render popovers below the hovered point
889 // let mut current_y = hovered_point.y + layout.position_map.line_height;
890 // for hover_popover in hover_popovers {
891 // let size = hover_popover.size();
892 // let mut popover_origin = point(hovered_point.x, current_y);
893
894 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
895 // if x_out_of_bounds < 0.0 {
896 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
897 // }
898
899 // hover_popover.paint(
900 // popover_origin,
901 // Bounds::<Pixels>::from_points(
902 // gpui::Point::<Pixels>::zero(),
903 // point(f32::MAX, f32::MAX),
904 // ), // Let content bleed outside of editor
905 // editor,
906 // cx,
907 // );
908
909 // current_y = popover_origin.y + size.y + HOVER_POPOVER_GAP;
910 // }
911 // }
912
913 // cx.scene().pop_stacking_context();
914 // }
915 })
916 }
917
918 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
919 bounds.upper_right().x - self.style.scrollbar_width
920 }
921
922 // fn paint_scrollbar(
923 // &mut self,
924 // bounds: Bounds<Pixels>,
925 // layout: &mut LayoutState,
926 // editor: &Editor,
927 // cx: &mut ViewContext<Editor>,
928 // ) {
929 // enum ScrollbarMouseHandlers {}
930 // if layout.mode != EditorMode::Full {
931 // return;
932 // }
933
934 // let style = &self.style.theme.scrollbar;
935
936 // let top = bounds.min_y;
937 // let bottom = bounds.max_y;
938 // let right = bounds.max_x;
939 // let left = self.scrollbar_left(&bounds);
940 // let row_range = &layout.scrollbar_row_range;
941 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
942
943 // let mut height = bounds.height();
944 // let mut first_row_y_offset = 0.0;
945
946 // // Impose a minimum height on the scrollbar thumb
947 // let row_height = height / max_row;
948 // let min_thumb_height =
949 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
950 // let thumb_height = (row_range.end - row_range.start) * row_height;
951 // if thumb_height < min_thumb_height {
952 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
953 // height -= min_thumb_height - thumb_height;
954 // }
955
956 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
957
958 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
959 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
960 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
961 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
962
963 // if layout.show_scrollbars {
964 // cx.paint_quad(Quad {
965 // bounds: track_bounds,
966 // border: style.track.border.into(),
967 // background: style.track.background_color,
968 // ..Default::default()
969 // });
970 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
971 // let theme = theme::current(cx);
972 // let scrollbar_theme = &theme.editor.scrollbar;
973 // if layout.is_singleton && scrollbar_settings.selections {
974 // let start_anchor = Anchor::min();
975 // let end_anchor = Anchor::max;
976 // let color = scrollbar_theme.selections;
977 // let border = Border {
978 // width: 1.,
979 // color: style.thumb.border.color,
980 // overlay: false,
981 // top: false,
982 // right: true,
983 // bottom: false,
984 // left: true,
985 // };
986 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
987 // let start_y = y_for_row(start.row() as f32);
988 // let mut end_y = y_for_row(end.row() as f32);
989 // if end_y - start_y < 1. {
990 // end_y = start_y + 1.;
991 // }
992 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
993
994 // cx.paint_quad(Quad {
995 // bounds,
996 // background: Some(color),
997 // border: border.into(),
998 // corner_radii: style.thumb.corner_radii.into(),
999 // })
1000 // };
1001 // let background_ranges = editor
1002 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1003 // start_anchor..end_anchor,
1004 // &layout.position_map.snapshot,
1005 // 50000,
1006 // );
1007 // for row in background_ranges {
1008 // let start = row.start();
1009 // let end = row.end();
1010 // push_region(*start, *end);
1011 // }
1012 // }
1013
1014 // if layout.is_singleton && scrollbar_settings.git_diff {
1015 // let diff_style = scrollbar_theme.git.clone();
1016 // for hunk in layout
1017 // .position_map
1018 // .snapshot
1019 // .buffer_snapshot
1020 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1021 // {
1022 // let start_display = Point::new(hunk.buffer_range.start, 0)
1023 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1024 // let end_display = Point::new(hunk.buffer_range.end, 0)
1025 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1026 // let start_y = y_for_row(start_display.row() as f32);
1027 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1028 // y_for_row((end_display.row() + 1) as f32)
1029 // } else {
1030 // y_for_row((end_display.row()) as f32)
1031 // };
1032
1033 // if end_y - start_y < 1. {
1034 // end_y = start_y + 1.;
1035 // }
1036 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1037
1038 // let color = match hunk.status() {
1039 // DiffHunkStatus::Added => diff_style.inserted,
1040 // DiffHunkStatus::Modified => diff_style.modified,
1041 // DiffHunkStatus::Removed => diff_style.deleted,
1042 // };
1043
1044 // let border = Border {
1045 // width: 1.,
1046 // color: style.thumb.border.color,
1047 // overlay: false,
1048 // top: false,
1049 // right: true,
1050 // bottom: false,
1051 // left: true,
1052 // };
1053
1054 // cx.paint_quad(Quad {
1055 // bounds,
1056 // background: Some(color),
1057 // border: border.into(),
1058 // corner_radii: style.thumb.corner_radii.into(),
1059 // })
1060 // }
1061 // }
1062
1063 // cx.paint_quad(Quad {
1064 // bounds: thumb_bounds,
1065 // border: style.thumb.border.into(),
1066 // background: style.thumb.background_color,
1067 // corner_radii: style.thumb.corner_radii.into(),
1068 // });
1069 // }
1070
1071 // cx.scene().push_cursor_region(CursorRegion {
1072 // bounds: track_bounds,
1073 // style: CursorStyle::Arrow,
1074 // });
1075 // let region_id = cx.view_id();
1076 // cx.scene().push_mouse_region(
1077 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1078 // .on_move(move |event, editor: &mut Editor, cx| {
1079 // if event.pressed_button.is_none() {
1080 // editor.scroll_manager.show_scrollbar(cx);
1081 // }
1082 // })
1083 // .on_down(MouseButton::Left, {
1084 // let row_range = row_range.clone();
1085 // move |event, editor: &mut Editor, cx| {
1086 // let y = event.position.y;
1087 // if y < thumb_top || thumb_bottom < y {
1088 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1089 // let top_row = center_row
1090 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1091 // let mut position = editor.scroll_position(cx);
1092 // position.set_y(top_row as f32);
1093 // editor.set_scroll_position(position, cx);
1094 // } else {
1095 // editor.scroll_manager.show_scrollbar(cx);
1096 // }
1097 // }
1098 // })
1099 // .on_drag(MouseButton::Left, {
1100 // move |event, editor: &mut Editor, cx| {
1101 // if event.end {
1102 // return;
1103 // }
1104
1105 // let y = event.prev_mouse_position.y;
1106 // let new_y = event.position.y;
1107 // if thumb_top < y && y < thumb_bottom {
1108 // let mut position = editor.scroll_position(cx);
1109 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1110 // if position.y < 0.0 {
1111 // position.set_y(0.);
1112 // }
1113 // editor.set_scroll_position(position, cx);
1114 // }
1115 // }
1116 // }),
1117 // );
1118 // }
1119
1120 #[allow(clippy::too_many_arguments)]
1121 fn paint_highlighted_range(
1122 &self,
1123 range: Range<DisplayPoint>,
1124 color: Hsla,
1125 corner_radius: Pixels,
1126 line_end_overshoot: Pixels,
1127 layout: &LayoutState,
1128 content_origin: gpui::Point<Pixels>,
1129 scroll_top: Pixels,
1130 scroll_left: Pixels,
1131 bounds: Bounds<Pixels>,
1132 cx: &mut ViewContext<Editor>,
1133 ) {
1134 let start_row = layout.visible_display_row_range.start;
1135 let end_row = layout.visible_display_row_range.end;
1136 if range.start != range.end {
1137 let row_range = if range.end.column() == 0 {
1138 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1139 } else {
1140 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1141 };
1142
1143 let highlighted_range = HighlightedRange {
1144 color,
1145 line_height: layout.position_map.line_height,
1146 corner_radius,
1147 start_y: content_origin.y
1148 + row_range.start as f32 * layout.position_map.line_height
1149 - scroll_top,
1150 lines: row_range
1151 .into_iter()
1152 .map(|row| {
1153 let line_layout =
1154 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1155 HighlightedRangeLine {
1156 start_x: if row == range.start.row() {
1157 content_origin.x
1158 + line_layout.x_for_index(range.start.column() as usize)
1159 - scroll_left
1160 } else {
1161 content_origin.x - scroll_left
1162 },
1163 end_x: if row == range.end.row() {
1164 content_origin.x
1165 + line_layout.x_for_index(range.end.column() as usize)
1166 - scroll_left
1167 } else {
1168 content_origin.x + line_layout.width + line_end_overshoot
1169 - scroll_left
1170 },
1171 }
1172 })
1173 .collect(),
1174 };
1175
1176 highlighted_range.paint(bounds, cx);
1177 }
1178 }
1179
1180 fn paint_blocks(
1181 &mut self,
1182 bounds: Bounds<Pixels>,
1183 layout: &mut LayoutState,
1184 editor: &mut Editor,
1185 cx: &mut ViewContext<Editor>,
1186 ) {
1187 let scroll_position = layout.position_map.snapshot.scroll_position();
1188 let scroll_left = scroll_position.x * layout.position_map.em_width;
1189 let scroll_top = scroll_position.y * layout.position_map.line_height;
1190
1191 for block in &mut layout.blocks {
1192 let mut origin = bounds.origin
1193 + point(
1194 Pixels::ZERO,
1195 block.row as f32 * layout.position_map.line_height - scroll_top,
1196 );
1197 if !matches!(block.style, BlockStyle::Sticky) {
1198 origin += point(-scroll_left, Pixels::ZERO);
1199 }
1200 block
1201 .element
1202 .draw(origin, block.available_space, editor, cx);
1203 }
1204 }
1205
1206 fn column_pixels(&self, column: usize, cx: &ViewContext<Editor>) -> Pixels {
1207 let style = &self.style;
1208 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1209 let layout = cx
1210 .text_system()
1211 .layout_text(
1212 " ".repeat(column).as_str(),
1213 font_size,
1214 &[TextRun {
1215 len: column,
1216 font: style.text.font(),
1217 color: Hsla::default(),
1218 underline: None,
1219 }],
1220 None,
1221 )
1222 .unwrap();
1223
1224 layout[0].width
1225 }
1226
1227 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &ViewContext<Editor>) -> Pixels {
1228 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1229 self.column_pixels(digit_count, cx)
1230 }
1231
1232 //Folds contained in a hunk are ignored apart from shrinking visual size
1233 //If a fold contains any hunks then that fold line is marked as modified
1234 fn layout_git_gutters(
1235 &self,
1236 display_rows: Range<u32>,
1237 snapshot: &EditorSnapshot,
1238 ) -> Vec<DisplayDiffHunk> {
1239 let buffer_snapshot = &snapshot.buffer_snapshot;
1240
1241 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1242 .to_point(snapshot)
1243 .row;
1244 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1245 .to_point(snapshot)
1246 .row;
1247
1248 buffer_snapshot
1249 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1250 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1251 .dedup()
1252 .collect()
1253 }
1254
1255 fn calculate_relative_line_numbers(
1256 &self,
1257 snapshot: &EditorSnapshot,
1258 rows: &Range<u32>,
1259 relative_to: Option<u32>,
1260 ) -> HashMap<u32, u32> {
1261 let mut relative_rows: HashMap<u32, u32> = Default::default();
1262 let Some(relative_to) = relative_to else {
1263 return relative_rows;
1264 };
1265
1266 let start = rows.start.min(relative_to);
1267 let end = rows.end.max(relative_to);
1268
1269 let buffer_rows = snapshot
1270 .buffer_rows(start)
1271 .take(1 + (end - start) as usize)
1272 .collect::<Vec<_>>();
1273
1274 let head_idx = relative_to - start;
1275 let mut delta = 1;
1276 let mut i = head_idx + 1;
1277 while i < buffer_rows.len() as u32 {
1278 if buffer_rows[i as usize].is_some() {
1279 if rows.contains(&(i + start)) {
1280 relative_rows.insert(i + start, delta);
1281 }
1282 delta += 1;
1283 }
1284 i += 1;
1285 }
1286 delta = 1;
1287 i = head_idx.min(buffer_rows.len() as u32 - 1);
1288 while i > 0 && buffer_rows[i as usize].is_none() {
1289 i -= 1;
1290 }
1291
1292 while i > 0 {
1293 i -= 1;
1294 if buffer_rows[i as usize].is_some() {
1295 if rows.contains(&(i + start)) {
1296 relative_rows.insert(i + start, delta);
1297 }
1298 delta += 1;
1299 }
1300 }
1301
1302 relative_rows
1303 }
1304
1305 fn layout_line_numbers(
1306 &self,
1307 rows: Range<u32>,
1308 active_rows: &BTreeMap<u32, bool>,
1309 newest_selection_head: DisplayPoint,
1310 is_singleton: bool,
1311 snapshot: &EditorSnapshot,
1312 cx: &ViewContext<Editor>,
1313 ) -> (
1314 Vec<Option<gpui::Line>>,
1315 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1316 ) {
1317 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1318 let include_line_numbers = snapshot.mode == EditorMode::Full;
1319 let mut line_number_layouts = Vec::with_capacity(rows.len());
1320 let mut fold_statuses = Vec::with_capacity(rows.len());
1321 let mut line_number = String::new();
1322 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1323 let relative_to = if is_relative {
1324 Some(newest_selection_head.row())
1325 } else {
1326 None
1327 };
1328
1329 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1330
1331 for (ix, row) in snapshot
1332 .buffer_rows(rows.start)
1333 .take((rows.end - rows.start) as usize)
1334 .enumerate()
1335 {
1336 let display_row = rows.start + ix as u32;
1337 let (active, color) = if active_rows.contains_key(&display_row) {
1338 (true, cx.theme().colors().editor_active_line_number)
1339 } else {
1340 (false, cx.theme().colors().editor_line_number)
1341 };
1342 if let Some(buffer_row) = row {
1343 if include_line_numbers {
1344 line_number.clear();
1345 let default_number = buffer_row + 1;
1346 let number = relative_rows
1347 .get(&(ix as u32 + rows.start))
1348 .unwrap_or(&default_number);
1349 write!(&mut line_number, "{}", number).unwrap();
1350 let run = TextRun {
1351 len: line_number.len(),
1352 font: self.style.text.font(),
1353 color,
1354 underline: None,
1355 };
1356 let layout = cx
1357 .text_system()
1358 .layout_text(&line_number, font_size, &[run], None)
1359 .unwrap()
1360 .pop()
1361 .unwrap();
1362 line_number_layouts.push(Some(layout));
1363 fold_statuses.push(
1364 is_singleton
1365 .then(|| {
1366 snapshot
1367 .fold_for_line(buffer_row)
1368 .map(|fold_status| (fold_status, buffer_row, active))
1369 })
1370 .flatten(),
1371 )
1372 }
1373 } else {
1374 fold_statuses.push(None);
1375 line_number_layouts.push(None);
1376 }
1377 }
1378
1379 (line_number_layouts, fold_statuses)
1380 }
1381
1382 fn layout_lines(
1383 &mut self,
1384 rows: Range<u32>,
1385 line_number_layouts: &[Option<Line>],
1386 snapshot: &EditorSnapshot,
1387 cx: &ViewContext<Editor>,
1388 ) -> Vec<LineWithInvisibles> {
1389 if rows.start >= rows.end {
1390 return Vec::new();
1391 }
1392
1393 // When the editor is empty and unfocused, then show the placeholder.
1394 if snapshot.is_empty() {
1395 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1396 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1397 let placeholder_text = snapshot.placeholder_text();
1398 let placeholder_lines = placeholder_text
1399 .as_ref()
1400 .map_or("", AsRef::as_ref)
1401 .split('\n')
1402 .skip(rows.start as usize)
1403 .chain(iter::repeat(""))
1404 .take(rows.len());
1405 placeholder_lines
1406 .map(|line| {
1407 let run = TextRun {
1408 len: line.len(),
1409 font: self.style.text.font(),
1410 color: placeholder_color,
1411 underline: Default::default(),
1412 };
1413 cx.text_system()
1414 .layout_text(line, font_size, &[run], None)
1415 .unwrap()
1416 .pop()
1417 .unwrap()
1418 })
1419 .map(|line| LineWithInvisibles {
1420 line,
1421 invisibles: Vec::new(),
1422 })
1423 .collect()
1424 } else {
1425 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1426 LineWithInvisibles::from_chunks(
1427 chunks,
1428 &self.style.text,
1429 MAX_LINE_LEN,
1430 rows.len() as usize,
1431 line_number_layouts,
1432 snapshot.mode,
1433 cx,
1434 )
1435 }
1436 }
1437
1438 fn compute_layout(
1439 &mut self,
1440 editor: &mut Editor,
1441 cx: &mut ViewContext<'_, Editor>,
1442 mut bounds: Bounds<Pixels>,
1443 ) -> LayoutState {
1444 // let mut size = constraint.max;
1445 // if size.x.is_infinite() {
1446 // unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
1447 // }
1448
1449 let snapshot = editor.snapshot(cx);
1450 let style = self.style.clone();
1451
1452 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1453 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1454 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1455 let em_width = cx
1456 .text_system()
1457 .typographic_bounds(font_id, font_size, 'm')
1458 .unwrap()
1459 .size
1460 .width;
1461 let em_advance = cx
1462 .text_system()
1463 .advance(font_id, font_size, 'm')
1464 .unwrap()
1465 .width;
1466
1467 let gutter_padding;
1468 let gutter_width;
1469 let gutter_margin;
1470 if snapshot.show_gutter {
1471 let descent = cx.text_system().descent(font_id, font_size).unwrap();
1472
1473 let gutter_padding_factor = 3.5;
1474 gutter_padding = (em_width * gutter_padding_factor).round();
1475 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1476 gutter_margin = -descent;
1477 } else {
1478 gutter_padding = Pixels::ZERO;
1479 gutter_width = Pixels::ZERO;
1480 gutter_margin = Pixels::ZERO;
1481 };
1482
1483 editor.gutter_width = gutter_width;
1484 let text_width = bounds.size.width - gutter_width;
1485 let overscroll = size(em_width, px(0.));
1486 let snapshot = {
1487 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1488
1489 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1490 let wrap_width = match editor.soft_wrap_mode(cx) {
1491 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1492 SoftWrap::EditorWidth => editor_width,
1493 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1494 };
1495
1496 if editor.set_wrap_width(Some(wrap_width), cx) {
1497 editor.snapshot(cx)
1498 } else {
1499 snapshot
1500 }
1501 };
1502
1503 let wrap_guides = editor
1504 .wrap_guides(cx)
1505 .iter()
1506 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1507 .collect::<SmallVec<[_; 2]>>();
1508
1509 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1510 // todo!("this should happen during layout")
1511 let editor_mode = snapshot.mode;
1512 if let EditorMode::AutoHeight { max_lines } = editor_mode {
1513 todo!()
1514 // size.set_y(
1515 // scroll_height
1516 // .min(constraint.max_along(Axis::Vertical))
1517 // .max(constraint.min_along(Axis::Vertical))
1518 // .max(line_height)
1519 // .min(line_height * max_lines as f32),
1520 // )
1521 } else if let EditorMode::SingleLine = editor_mode {
1522 bounds.size.height = line_height.min(bounds.size.height);
1523 }
1524 // todo!()
1525 // else if size.y.is_infinite() {
1526 // // size.set_y(scroll_height);
1527 // }
1528 //
1529 let gutter_size = size(gutter_width, bounds.size.height);
1530 let text_size = size(text_width, bounds.size.height);
1531
1532 let autoscroll_horizontally =
1533 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1534 let mut snapshot = editor.snapshot(cx);
1535
1536 let scroll_position = snapshot.scroll_position();
1537 // The scroll position is a fractional point, the whole number of which represents
1538 // the top of the window in terms of display rows.
1539 let start_row = scroll_position.y as u32;
1540 let height_in_lines = f32::from(bounds.size.height / line_height);
1541 let max_row = snapshot.max_point().row();
1542
1543 // Add 1 to ensure selections bleed off screen
1544 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1545
1546 let start_anchor = if start_row == 0 {
1547 Anchor::min()
1548 } else {
1549 snapshot
1550 .buffer_snapshot
1551 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1552 };
1553 let end_anchor = if end_row > max_row {
1554 Anchor::max()
1555 } else {
1556 snapshot
1557 .buffer_snapshot
1558 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1559 };
1560
1561 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1562 let mut active_rows = BTreeMap::new();
1563 let mut fold_ranges = Vec::new();
1564 let is_singleton = editor.is_singleton(cx);
1565
1566 let highlighted_rows = editor.highlighted_rows();
1567 let highlighted_ranges = editor.background_highlights_in_range(
1568 start_anchor..end_anchor,
1569 &snapshot.display_snapshot,
1570 cx.theme().colors(),
1571 );
1572
1573 fold_ranges.extend(
1574 snapshot
1575 .folds_in_range(start_anchor..end_anchor)
1576 .map(|anchor| {
1577 let start = anchor.start.to_point(&snapshot.buffer_snapshot);
1578 (
1579 start.row,
1580 start.to_display_point(&snapshot.display_snapshot)
1581 ..anchor.end.to_display_point(&snapshot),
1582 )
1583 }),
1584 );
1585
1586 let mut newest_selection_head = None;
1587
1588 if editor.show_local_selections {
1589 let mut local_selections: Vec<Selection<Point>> = editor
1590 .selections
1591 .disjoint_in_range(start_anchor..end_anchor, cx);
1592 local_selections.extend(editor.selections.pending(cx));
1593 let mut layouts = Vec::new();
1594 let newest = editor.selections.newest(cx);
1595 for selection in local_selections.drain(..) {
1596 let is_empty = selection.start == selection.end;
1597 let is_newest = selection == newest;
1598
1599 let layout = SelectionLayout::new(
1600 selection,
1601 editor.selections.line_mode,
1602 editor.cursor_shape,
1603 &snapshot.display_snapshot,
1604 is_newest,
1605 true,
1606 );
1607 if is_newest {
1608 newest_selection_head = Some(layout.head);
1609 }
1610
1611 for row in cmp::max(layout.active_rows.start, start_row)
1612 ..=cmp::min(layout.active_rows.end, end_row)
1613 {
1614 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1615 *contains_non_empty_selection |= !is_empty;
1616 }
1617 layouts.push(layout);
1618 }
1619
1620 selections.push((style.local_player, layouts));
1621 }
1622
1623 if let Some(collaboration_hub) = &editor.collaboration_hub {
1624 // When following someone, render the local selections in their color.
1625 if let Some(leader_id) = editor.leader_peer_id {
1626 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1627 if let Some(participant_index) = collaboration_hub
1628 .user_participant_indices(cx)
1629 .get(&collaborator.user_id)
1630 {
1631 if let Some((local_selection_style, _)) = selections.first_mut() {
1632 *local_selection_style = cx
1633 .theme()
1634 .players()
1635 .color_for_participant(participant_index.0);
1636 }
1637 }
1638 }
1639 }
1640
1641 let mut remote_selections = HashMap::default();
1642 for selection in snapshot.remote_selections_in_range(
1643 &(start_anchor..end_anchor),
1644 collaboration_hub.as_ref(),
1645 cx,
1646 ) {
1647 let selection_style = if let Some(participant_index) = selection.participant_index {
1648 cx.theme()
1649 .players()
1650 .color_for_participant(participant_index.0)
1651 } else {
1652 cx.theme().players().absent()
1653 };
1654
1655 // Don't re-render the leader's selections, since the local selections
1656 // match theirs.
1657 if Some(selection.peer_id) == editor.leader_peer_id {
1658 continue;
1659 }
1660
1661 remote_selections
1662 .entry(selection.replica_id)
1663 .or_insert((selection_style, Vec::new()))
1664 .1
1665 .push(SelectionLayout::new(
1666 selection.selection,
1667 selection.line_mode,
1668 selection.cursor_shape,
1669 &snapshot.display_snapshot,
1670 false,
1671 false,
1672 ));
1673 }
1674
1675 selections.extend(remote_selections.into_values());
1676 }
1677
1678 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1679 let show_scrollbars = match scrollbar_settings.show {
1680 ShowScrollbar::Auto => {
1681 // Git
1682 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1683 ||
1684 // Selections
1685 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1686 // Scrollmanager
1687 || editor.scroll_manager.scrollbars_visible()
1688 }
1689 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1690 ShowScrollbar::Always => true,
1691 ShowScrollbar::Never => false,
1692 };
1693
1694 let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)> = Vec::new();
1695 // todo!()
1696
1697 // fold_ranges
1698 // .into_iter()
1699 // .map(|(id, fold)| {
1700 // // todo!("folds!")
1701 // // let color = self
1702 // // .style
1703 // // .folds
1704 // // .ellipses
1705 // // .background
1706 // // .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
1707 // // .color;
1708
1709 // // (id, fold, color)
1710 // })
1711 // .collect();
1712
1713 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1714 let newest = editor.selections.newest::<Point>(cx);
1715 SelectionLayout::new(
1716 newest,
1717 editor.selections.line_mode,
1718 editor.cursor_shape,
1719 &snapshot.display_snapshot,
1720 true,
1721 true,
1722 )
1723 .head
1724 });
1725
1726 let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
1727 start_row..end_row,
1728 &active_rows,
1729 head_for_relative,
1730 is_singleton,
1731 &snapshot,
1732 cx,
1733 );
1734
1735 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1736
1737 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1738
1739 let mut max_visible_line_width = Pixels::ZERO;
1740 let line_layouts =
1741 self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
1742 for line_with_invisibles in &line_layouts {
1743 if line_with_invisibles.line.width > max_visible_line_width {
1744 max_visible_line_width = line_with_invisibles.line.width;
1745 }
1746 }
1747
1748 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1749 .unwrap()
1750 .width;
1751 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1752
1753 let (scroll_width, blocks) = self.layout_blocks(
1754 start_row..end_row,
1755 &snapshot,
1756 bounds.size.width,
1757 scroll_width,
1758 gutter_padding,
1759 gutter_width,
1760 em_width,
1761 gutter_width + gutter_margin,
1762 line_height,
1763 &style,
1764 &line_layouts,
1765 editor,
1766 cx,
1767 );
1768
1769 let scroll_max = point(
1770 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1771 max_row as f32,
1772 );
1773
1774 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1775
1776 let autoscrolled = if autoscroll_horizontally {
1777 editor.autoscroll_horizontally(
1778 start_row,
1779 text_size.width,
1780 scroll_width,
1781 em_width,
1782 &line_layouts,
1783 cx,
1784 )
1785 } else {
1786 false
1787 };
1788
1789 if clamped || autoscrolled {
1790 snapshot = editor.snapshot(cx);
1791 }
1792
1793 let mut context_menu = None;
1794 let mut code_actions_indicator = None;
1795 if let Some(newest_selection_head) = newest_selection_head {
1796 if (start_row..end_row).contains(&newest_selection_head.row()) {
1797 if editor.context_menu_visible() {
1798 context_menu =
1799 editor.render_context_menu(newest_selection_head, &self.style, cx);
1800 }
1801
1802 let active = matches!(
1803 editor.context_menu.read().as_ref(),
1804 Some(crate::ContextMenu::CodeActions(_))
1805 );
1806
1807 code_actions_indicator = editor
1808 .render_code_actions_indicator(&style, active, cx)
1809 .map(|element| CodeActionsIndicator {
1810 row: newest_selection_head.row(),
1811 element,
1812 });
1813 }
1814 }
1815
1816 let visible_rows = start_row..start_row + line_layouts.len() as u32;
1817 // todo!("hover")
1818 // let mut hover = editor.hover_state.render(
1819 // &snapshot,
1820 // &style,
1821 // visible_rows,
1822 // editor.workspace.as_ref().map(|(w, _)| w.clone()),
1823 // cx,
1824 // );
1825 // let mode = editor.mode;
1826
1827 // todo!("fold_indicators")
1828 // let mut fold_indicators = editor.render_fold_indicators(
1829 // fold_statuses,
1830 // &style,
1831 // editor.gutter_hovered,
1832 // line_height,
1833 // gutter_margin,
1834 // cx,
1835 // );
1836
1837 // todo!("context_menu")
1838 // if let Some((_, context_menu)) = context_menu.as_mut() {
1839 // context_menu.layout(
1840 // SizeConstraint {
1841 // min: gpui::Point::<Pixels>::zero(),
1842 // max: point(
1843 // cx.window_size().x * 0.7,
1844 // (12. * line_height).min((size.y - line_height) / 2.),
1845 // ),
1846 // },
1847 // editor,
1848 // cx,
1849 // );
1850 // }
1851
1852 // todo!("fold indicators")
1853 // for fold_indicator in fold_indicators.iter_mut() {
1854 // if let Some(indicator) = fold_indicator.as_mut() {
1855 // indicator.layout(
1856 // SizeConstraint::strict_along(
1857 // Axis::Vertical,
1858 // line_height * style.code_actions.vertical_scale,
1859 // ),
1860 // editor,
1861 // cx,
1862 // );
1863 // }
1864 // }
1865
1866 // todo!("hover popovers")
1867 // if let Some((_, hover_popovers)) = hover.as_mut() {
1868 // for hover_popover in hover_popovers.iter_mut() {
1869 // hover_popover.layout(
1870 // SizeConstraint {
1871 // min: gpui::Point::<Pixels>::zero(),
1872 // max: point(
1873 // (120. * em_width) // Default size
1874 // .min(size.x / 2.) // Shrink to half of the editor width
1875 // .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1876 // (16. * line_height) // Default size
1877 // .min(size.y / 2.) // Shrink to half of the editor height
1878 // .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1879 // ),
1880 // },
1881 // editor,
1882 // cx,
1883 // );
1884 // }
1885 // }
1886
1887 let invisible_symbol_font_size = font_size / 2.;
1888 let tab_invisible = cx
1889 .text_system()
1890 .layout_text(
1891 "→",
1892 invisible_symbol_font_size,
1893 &[TextRun {
1894 len: "→".len(),
1895 font: self.style.text.font(),
1896 color: cx.theme().colors().editor_invisible,
1897 underline: None,
1898 }],
1899 None,
1900 )
1901 .unwrap()
1902 .pop()
1903 .unwrap();
1904 let space_invisible = cx
1905 .text_system()
1906 .layout_text(
1907 "•",
1908 invisible_symbol_font_size,
1909 &[TextRun {
1910 len: "•".len(),
1911 font: self.style.text.font(),
1912 color: cx.theme().colors().editor_invisible,
1913 underline: None,
1914 }],
1915 None,
1916 )
1917 .unwrap()
1918 .pop()
1919 .unwrap();
1920
1921 LayoutState {
1922 mode: editor_mode,
1923 position_map: Arc::new(PositionMap {
1924 size: bounds.size,
1925 scroll_max,
1926 line_layouts,
1927 line_height,
1928 em_width,
1929 em_advance,
1930 snapshot,
1931 }),
1932 visible_display_row_range: start_row..end_row,
1933 wrap_guides,
1934 gutter_size,
1935 gutter_padding,
1936 text_size,
1937 scrollbar_row_range,
1938 show_scrollbars,
1939 is_singleton,
1940 max_row,
1941 gutter_margin,
1942 active_rows,
1943 highlighted_rows,
1944 highlighted_ranges,
1945 fold_ranges,
1946 line_number_layouts,
1947 display_hunks,
1948 blocks,
1949 selections,
1950 context_menu,
1951 code_actions_indicator,
1952 // fold_indicators,
1953 tab_invisible,
1954 space_invisible,
1955 // hover_popovers: hover,
1956 }
1957 }
1958
1959 #[allow(clippy::too_many_arguments)]
1960 fn layout_blocks(
1961 &mut self,
1962 rows: Range<u32>,
1963 snapshot: &EditorSnapshot,
1964 editor_width: Pixels,
1965 scroll_width: Pixels,
1966 gutter_padding: Pixels,
1967 gutter_width: Pixels,
1968 em_width: Pixels,
1969 text_x: Pixels,
1970 line_height: Pixels,
1971 style: &EditorStyle,
1972 line_layouts: &[LineWithInvisibles],
1973 editor: &mut Editor,
1974 cx: &mut ViewContext<Editor>,
1975 ) -> (Pixels, Vec<BlockLayout>) {
1976 let mut block_id = 0;
1977 let scroll_x = snapshot.scroll_anchor.offset.x;
1978 let (fixed_blocks, non_fixed_blocks) = snapshot
1979 .blocks_in_range(rows.clone())
1980 .partition::<Vec<_>, _>(|(_, block)| match block {
1981 TransformBlock::ExcerptHeader { .. } => false,
1982 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1983 });
1984 let mut render_block = |block: &TransformBlock,
1985 available_space: Size<AvailableSpace>,
1986 block_id: usize,
1987 editor: &mut Editor,
1988 cx: &mut ViewContext<Editor>| {
1989 let mut element = match block {
1990 TransformBlock::Custom(block) => {
1991 let align_to = block
1992 .position()
1993 .to_point(&snapshot.buffer_snapshot)
1994 .to_display_point(snapshot);
1995 let anchor_x = text_x
1996 + if rows.contains(&align_to.row()) {
1997 line_layouts[(align_to.row() - rows.start) as usize]
1998 .line
1999 .x_for_index(align_to.column() as usize)
2000 } else {
2001 layout_line(align_to.row(), snapshot, style, cx)
2002 .unwrap()
2003 .x_for_index(align_to.column() as usize)
2004 };
2005
2006 block.render(&mut BlockContext {
2007 view_context: cx,
2008 anchor_x,
2009 gutter_padding,
2010 line_height,
2011 // scroll_x,
2012 gutter_width,
2013 em_width,
2014 block_id,
2015 })
2016 }
2017 TransformBlock::ExcerptHeader {
2018 id,
2019 buffer,
2020 range,
2021 starts_new_buffer,
2022 ..
2023 } => {
2024 let include_root = editor
2025 .project
2026 .as_ref()
2027 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2028 .unwrap_or_default();
2029 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2030 let jump_path = ProjectPath {
2031 worktree_id: file.worktree_id(cx),
2032 path: file.path.clone(),
2033 };
2034 let jump_anchor = range
2035 .primary
2036 .as_ref()
2037 .map_or(range.context.start, |primary| primary.start);
2038 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2039
2040 // todo!("avoid ElementId collision risk here")
2041 let icon_button_id: usize = id.clone().into();
2042 IconButton::new(icon_button_id, ui::Icon::ArrowUpRight)
2043 .on_click(move |editor: &mut Editor, cx| {
2044 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2045 })
2046 .tooltip("Jump to Buffer") // todo!(pass an action as well to show key binding)
2047 });
2048
2049 let element = if *starts_new_buffer {
2050 let path = buffer.resolve_file_path(cx, include_root);
2051 let mut filename = None;
2052 let mut parent_path = None;
2053 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2054 if let Some(path) = path {
2055 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2056 parent_path =
2057 path.parent().map(|p| p.to_string_lossy().to_string() + "/");
2058 }
2059
2060 h_stack()
2061 .size_full()
2062 .bg(gpui::red())
2063 .child(filename.unwrap_or_else(|| "untitled".to_string()))
2064 .children(parent_path)
2065 .children(jump_icon) // .p_x(gutter_padding)
2066 } else {
2067 let text_style = style.text.clone();
2068 h_stack()
2069 .size_full()
2070 .bg(gpui::red())
2071 .child("⋯")
2072 .children(jump_icon) // .p_x(gutter_padding)
2073 };
2074 element.render()
2075 }
2076 };
2077
2078 let size = element.measure(available_space, editor, cx);
2079 (element, size)
2080 };
2081
2082 let mut fixed_block_max_width = Pixels::ZERO;
2083 let mut blocks = Vec::new();
2084 for (row, block) in fixed_blocks {
2085 let available_space = size(
2086 AvailableSpace::MinContent,
2087 AvailableSpace::Definite(block.height() as f32 * line_height),
2088 );
2089 let (element, element_size) =
2090 render_block(block, available_space, block_id, editor, cx);
2091 block_id += 1;
2092 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2093 blocks.push(BlockLayout {
2094 row,
2095 element,
2096 available_space,
2097 style: BlockStyle::Fixed,
2098 });
2099 }
2100 for (row, block) in non_fixed_blocks {
2101 let style = match block {
2102 TransformBlock::Custom(block) => block.style(),
2103 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2104 };
2105 let width = match style {
2106 BlockStyle::Sticky => editor_width,
2107 BlockStyle::Flex => editor_width
2108 .max(fixed_block_max_width)
2109 .max(gutter_width + scroll_width),
2110 BlockStyle::Fixed => unreachable!(),
2111 };
2112 let available_space = size(
2113 AvailableSpace::Definite(width),
2114 AvailableSpace::Definite(block.height() as f32 * line_height),
2115 );
2116 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2117 block_id += 1;
2118 blocks.push(BlockLayout {
2119 row,
2120 element,
2121 available_space,
2122 style,
2123 });
2124 }
2125 (
2126 scroll_width.max(fixed_block_max_width - gutter_width),
2127 blocks,
2128 )
2129 }
2130
2131 fn paint_mouse_listeners(
2132 &mut self,
2133 bounds: Bounds<Pixels>,
2134 gutter_bounds: Bounds<Pixels>,
2135 text_bounds: Bounds<Pixels>,
2136 position_map: &Arc<PositionMap>,
2137 cx: &mut ViewContext<Editor>,
2138 ) {
2139 cx.on_mouse_event({
2140 let position_map = position_map.clone();
2141 move |editor, event: &ScrollWheelEvent, phase, cx| {
2142 if phase != DispatchPhase::Bubble {
2143 return;
2144 }
2145
2146 if Self::scroll(editor, event, &position_map, bounds, cx) {
2147 cx.stop_propagation();
2148 }
2149 }
2150 });
2151 cx.on_mouse_event({
2152 let position_map = position_map.clone();
2153 move |editor, event: &MouseDownEvent, phase, cx| {
2154 if phase != DispatchPhase::Bubble {
2155 return;
2156 }
2157
2158 if Self::mouse_down(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2159 cx.stop_propagation()
2160 }
2161 }
2162 });
2163 cx.on_mouse_event({
2164 let position_map = position_map.clone();
2165 move |editor, event: &MouseUpEvent, phase, cx| {
2166 if phase != DispatchPhase::Bubble {
2167 return;
2168 }
2169
2170 if Self::mouse_up(editor, event, &position_map, text_bounds, cx) {
2171 cx.stop_propagation()
2172 }
2173 }
2174 });
2175 // todo!()
2176 // on_down(MouseButton::Right, {
2177 // let position_map = position_map.clone();
2178 // move |event, editor, cx| {
2179 // if !Self::mouse_right_down(
2180 // editor,
2181 // event.position,
2182 // position_map.as_ref(),
2183 // text_bounds,
2184 // cx,
2185 // ) {
2186 // cx.propagate_event();
2187 // }
2188 // }
2189 // });
2190 cx.on_mouse_event({
2191 let position_map = position_map.clone();
2192 move |editor, event: &MouseMoveEvent, phase, cx| {
2193 if phase != DispatchPhase::Bubble {
2194 return;
2195 }
2196
2197 if Self::mouse_moved(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2198 cx.stop_propagation()
2199 }
2200 }
2201 });
2202 }
2203}
2204
2205#[derive(Debug)]
2206pub struct LineWithInvisibles {
2207 pub line: Line,
2208 invisibles: Vec<Invisible>,
2209}
2210
2211impl LineWithInvisibles {
2212 fn from_chunks<'a>(
2213 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2214 text_style: &TextStyle,
2215 max_line_len: usize,
2216 max_line_count: usize,
2217 line_number_layouts: &[Option<Line>],
2218 editor_mode: EditorMode,
2219 cx: &WindowContext,
2220 ) -> Vec<Self> {
2221 let mut layouts = Vec::with_capacity(max_line_count);
2222 let mut line = String::new();
2223 let mut invisibles = Vec::new();
2224 let mut styles = Vec::new();
2225 let mut non_whitespace_added = false;
2226 let mut row = 0;
2227 let mut line_exceeded_max_len = false;
2228 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2229
2230 for highlighted_chunk in chunks.chain([HighlightedChunk {
2231 chunk: "\n",
2232 style: None,
2233 is_tab: false,
2234 }]) {
2235 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2236 if ix > 0 {
2237 let layout = cx
2238 .text_system()
2239 .layout_text(&line, font_size, &styles, None);
2240 layouts.push(Self {
2241 line: layout.unwrap().pop().unwrap(),
2242 invisibles: invisibles.drain(..).collect(),
2243 });
2244
2245 line.clear();
2246 styles.clear();
2247 row += 1;
2248 line_exceeded_max_len = false;
2249 non_whitespace_added = false;
2250 if row == max_line_count {
2251 return layouts;
2252 }
2253 }
2254
2255 if !line_chunk.is_empty() && !line_exceeded_max_len {
2256 let text_style = if let Some(style) = highlighted_chunk.style {
2257 text_style
2258 .clone()
2259 .highlight(style)
2260 .map(Cow::Owned)
2261 .unwrap_or_else(|_| Cow::Borrowed(text_style))
2262 } else {
2263 Cow::Borrowed(text_style)
2264 };
2265
2266 if line.len() + line_chunk.len() > max_line_len {
2267 let mut chunk_len = max_line_len - line.len();
2268 while !line_chunk.is_char_boundary(chunk_len) {
2269 chunk_len -= 1;
2270 }
2271 line_chunk = &line_chunk[..chunk_len];
2272 line_exceeded_max_len = true;
2273 }
2274
2275 styles.push(TextRun {
2276 len: line_chunk.len(),
2277 font: text_style.font(),
2278 color: text_style.color,
2279 underline: text_style.underline,
2280 });
2281
2282 if editor_mode == EditorMode::Full {
2283 // Line wrap pads its contents with fake whitespaces,
2284 // avoid printing them
2285 let inside_wrapped_string = line_number_layouts
2286 .get(row)
2287 .and_then(|layout| layout.as_ref())
2288 .is_none();
2289 if highlighted_chunk.is_tab {
2290 if non_whitespace_added || !inside_wrapped_string {
2291 invisibles.push(Invisible::Tab {
2292 line_start_offset: line.len(),
2293 });
2294 }
2295 } else {
2296 invisibles.extend(
2297 line_chunk
2298 .chars()
2299 .enumerate()
2300 .filter(|(_, line_char)| {
2301 let is_whitespace = line_char.is_whitespace();
2302 non_whitespace_added |= !is_whitespace;
2303 is_whitespace
2304 && (non_whitespace_added || !inside_wrapped_string)
2305 })
2306 .map(|(whitespace_index, _)| Invisible::Whitespace {
2307 line_offset: line.len() + whitespace_index,
2308 }),
2309 )
2310 }
2311 }
2312
2313 line.push_str(line_chunk);
2314 }
2315 }
2316 }
2317
2318 layouts
2319 }
2320
2321 fn draw(
2322 &self,
2323 layout: &LayoutState,
2324 row: u32,
2325 scroll_top: Pixels,
2326 content_origin: gpui::Point<Pixels>,
2327 scroll_left: Pixels,
2328 whitespace_setting: ShowWhitespaceSetting,
2329 selection_ranges: &[Range<DisplayPoint>],
2330 cx: &mut ViewContext<Editor>,
2331 ) {
2332 let line_height = layout.position_map.line_height;
2333 let line_y = line_height * row as f32 - scroll_top;
2334
2335 self.line.paint(
2336 content_origin + gpui::point(-scroll_left, line_y),
2337 line_height,
2338 cx,
2339 );
2340
2341 self.draw_invisibles(
2342 &selection_ranges,
2343 layout,
2344 content_origin,
2345 scroll_left,
2346 line_y,
2347 row,
2348 line_height,
2349 whitespace_setting,
2350 cx,
2351 );
2352 }
2353
2354 fn draw_invisibles(
2355 &self,
2356 selection_ranges: &[Range<DisplayPoint>],
2357 layout: &LayoutState,
2358 content_origin: gpui::Point<Pixels>,
2359 scroll_left: Pixels,
2360 line_y: Pixels,
2361 row: u32,
2362 line_height: Pixels,
2363 whitespace_setting: ShowWhitespaceSetting,
2364 cx: &mut ViewContext<Editor>,
2365 ) {
2366 let allowed_invisibles_regions = match whitespace_setting {
2367 ShowWhitespaceSetting::None => return,
2368 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2369 ShowWhitespaceSetting::All => None,
2370 };
2371
2372 for invisible in &self.invisibles {
2373 let (&token_offset, invisible_symbol) = match invisible {
2374 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2375 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2376 };
2377
2378 let x_offset = self.line.x_for_index(token_offset);
2379 let invisible_offset =
2380 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2381 let origin =
2382 content_origin + gpui::point(-scroll_left + x_offset + invisible_offset, line_y);
2383
2384 if let Some(allowed_regions) = allowed_invisibles_regions {
2385 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2386 if !allowed_regions
2387 .iter()
2388 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2389 {
2390 continue;
2391 }
2392 }
2393 invisible_symbol.paint(origin, line_height, cx);
2394 }
2395 }
2396}
2397
2398#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2399enum Invisible {
2400 Tab { line_start_offset: usize },
2401 Whitespace { line_offset: usize },
2402}
2403
2404impl Element<Editor> for EditorElement {
2405 type ElementState = ();
2406
2407 fn id(&self) -> Option<gpui::ElementId> {
2408 None
2409 }
2410
2411 fn initialize(
2412 &mut self,
2413 editor: &mut Editor,
2414 element_state: Option<Self::ElementState>,
2415 cx: &mut gpui::ViewContext<Editor>,
2416 ) -> Self::ElementState {
2417 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2418
2419 let dispatch_context = editor.dispatch_context(cx);
2420 cx.with_element_id(cx.view().entity_id(), |global_id, cx| {
2421 cx.with_key_dispatch(
2422 dispatch_context,
2423 Some(editor.focus_handle.clone()),
2424 |_, cx| {
2425 register_action(cx, Editor::move_left);
2426 register_action(cx, Editor::move_right);
2427 register_action(cx, Editor::move_down);
2428 register_action(cx, Editor::move_up);
2429 // on_action(cx, Editor::new_file); todo!()
2430 // on_action(cx, Editor::new_file_in_direction); todo!()
2431 register_action(cx, Editor::cancel);
2432 register_action(cx, Editor::newline);
2433 register_action(cx, Editor::newline_above);
2434 register_action(cx, Editor::newline_below);
2435 register_action(cx, Editor::backspace);
2436 register_action(cx, Editor::delete);
2437 register_action(cx, Editor::tab);
2438 register_action(cx, Editor::tab_prev);
2439 register_action(cx, Editor::indent);
2440 register_action(cx, Editor::outdent);
2441 register_action(cx, Editor::delete_line);
2442 register_action(cx, Editor::join_lines);
2443 register_action(cx, Editor::sort_lines_case_sensitive);
2444 register_action(cx, Editor::sort_lines_case_insensitive);
2445 register_action(cx, Editor::reverse_lines);
2446 register_action(cx, Editor::shuffle_lines);
2447 register_action(cx, Editor::convert_to_upper_case);
2448 register_action(cx, Editor::convert_to_lower_case);
2449 register_action(cx, Editor::convert_to_title_case);
2450 register_action(cx, Editor::convert_to_snake_case);
2451 register_action(cx, Editor::convert_to_kebab_case);
2452 register_action(cx, Editor::convert_to_upper_camel_case);
2453 register_action(cx, Editor::convert_to_lower_camel_case);
2454 register_action(cx, Editor::delete_to_previous_word_start);
2455 register_action(cx, Editor::delete_to_previous_subword_start);
2456 register_action(cx, Editor::delete_to_next_word_end);
2457 register_action(cx, Editor::delete_to_next_subword_end);
2458 register_action(cx, Editor::delete_to_beginning_of_line);
2459 register_action(cx, Editor::delete_to_end_of_line);
2460 register_action(cx, Editor::cut_to_end_of_line);
2461 register_action(cx, Editor::duplicate_line);
2462 register_action(cx, Editor::move_line_up);
2463 register_action(cx, Editor::move_line_down);
2464 register_action(cx, Editor::transpose);
2465 register_action(cx, Editor::cut);
2466 register_action(cx, Editor::copy);
2467 register_action(cx, Editor::paste);
2468 register_action(cx, Editor::undo);
2469 register_action(cx, Editor::redo);
2470 register_action(cx, Editor::move_page_up);
2471 register_action(cx, Editor::move_page_down);
2472 register_action(cx, Editor::next_screen);
2473 register_action(cx, Editor::scroll_cursor_top);
2474 register_action(cx, Editor::scroll_cursor_center);
2475 register_action(cx, Editor::scroll_cursor_bottom);
2476 register_action(cx, |editor, _: &LineDown, cx| {
2477 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
2478 });
2479 register_action(cx, |editor, _: &LineUp, cx| {
2480 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
2481 });
2482 register_action(cx, |editor, _: &HalfPageDown, cx| {
2483 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
2484 });
2485 register_action(cx, |editor, _: &HalfPageUp, cx| {
2486 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
2487 });
2488 register_action(cx, |editor, _: &PageDown, cx| {
2489 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
2490 });
2491 register_action(cx, |editor, _: &PageUp, cx| {
2492 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
2493 });
2494 register_action(cx, Editor::move_to_previous_word_start);
2495 register_action(cx, Editor::move_to_previous_subword_start);
2496 register_action(cx, Editor::move_to_next_word_end);
2497 register_action(cx, Editor::move_to_next_subword_end);
2498 register_action(cx, Editor::move_to_beginning_of_line);
2499 register_action(cx, Editor::move_to_end_of_line);
2500 register_action(cx, Editor::move_to_start_of_paragraph);
2501 register_action(cx, Editor::move_to_end_of_paragraph);
2502 register_action(cx, Editor::move_to_beginning);
2503 register_action(cx, Editor::move_to_end);
2504 register_action(cx, Editor::select_up);
2505 register_action(cx, Editor::select_down);
2506 register_action(cx, Editor::select_left);
2507 register_action(cx, Editor::select_right);
2508 register_action(cx, Editor::select_to_previous_word_start);
2509 register_action(cx, Editor::select_to_previous_subword_start);
2510 register_action(cx, Editor::select_to_next_word_end);
2511 register_action(cx, Editor::select_to_next_subword_end);
2512 register_action(cx, Editor::select_to_beginning_of_line);
2513 register_action(cx, Editor::select_to_end_of_line);
2514 register_action(cx, Editor::select_to_start_of_paragraph);
2515 register_action(cx, Editor::select_to_end_of_paragraph);
2516 register_action(cx, Editor::select_to_beginning);
2517 register_action(cx, Editor::select_to_end);
2518 register_action(cx, Editor::select_all);
2519 register_action(cx, |editor, action, cx| {
2520 editor.select_all_matches(action, cx).log_err();
2521 });
2522 register_action(cx, Editor::select_line);
2523 register_action(cx, Editor::split_selection_into_lines);
2524 register_action(cx, Editor::add_selection_above);
2525 register_action(cx, Editor::add_selection_below);
2526 register_action(cx, |editor, action, cx| {
2527 editor.select_next(action, cx).log_err();
2528 });
2529 register_action(cx, |editor, action, cx| {
2530 editor.select_previous(action, cx).log_err();
2531 });
2532 register_action(cx, Editor::toggle_comments);
2533 register_action(cx, Editor::select_larger_syntax_node);
2534 register_action(cx, Editor::select_smaller_syntax_node);
2535 register_action(cx, Editor::move_to_enclosing_bracket);
2536 register_action(cx, Editor::undo_selection);
2537 register_action(cx, Editor::redo_selection);
2538 register_action(cx, Editor::go_to_diagnostic);
2539 register_action(cx, Editor::go_to_prev_diagnostic);
2540 register_action(cx, Editor::go_to_hunk);
2541 register_action(cx, Editor::go_to_prev_hunk);
2542 register_action(cx, Editor::go_to_definition);
2543 register_action(cx, Editor::go_to_definition_split);
2544 register_action(cx, Editor::go_to_type_definition);
2545 register_action(cx, Editor::go_to_type_definition_split);
2546 register_action(cx, Editor::fold);
2547 register_action(cx, Editor::fold_at);
2548 register_action(cx, Editor::unfold_lines);
2549 register_action(cx, Editor::unfold_at);
2550 register_action(cx, Editor::fold_selected_ranges);
2551 register_action(cx, Editor::show_completions);
2552 register_action(cx, Editor::toggle_code_actions);
2553 // on_action(cx, Editor::open_excerpts); todo!()
2554 register_action(cx, Editor::toggle_soft_wrap);
2555 register_action(cx, Editor::toggle_inlay_hints);
2556 register_action(cx, Editor::reveal_in_finder);
2557 register_action(cx, Editor::copy_path);
2558 register_action(cx, Editor::copy_relative_path);
2559 register_action(cx, Editor::copy_highlight_json);
2560 register_action(cx, |editor, action, cx| {
2561 editor
2562 .format(action, cx)
2563 .map(|task| task.detach_and_log_err(cx));
2564 });
2565 register_action(cx, Editor::restart_language_server);
2566 register_action(cx, Editor::show_character_palette);
2567 // on_action(cx, Editor::confirm_completion); todo!()
2568 register_action(cx, |editor, action, cx| {
2569 editor
2570 .confirm_code_action(action, cx)
2571 .map(|task| task.detach_and_log_err(cx));
2572 });
2573 // on_action(cx, Editor::rename); todo!()
2574 // on_action(cx, Editor::confirm_rename); todo!()
2575 register_action(cx, |editor, action, cx| {
2576 editor
2577 .find_all_references(action, cx)
2578 .map(|task| task.detach_and_log_err(cx));
2579 });
2580 register_action(cx, Editor::next_copilot_suggestion);
2581 register_action(cx, Editor::previous_copilot_suggestion);
2582 register_action(cx, Editor::copilot_suggest);
2583 register_action(cx, Editor::context_menu_first);
2584 register_action(cx, Editor::context_menu_prev);
2585 register_action(cx, Editor::context_menu_next);
2586 register_action(cx, Editor::context_menu_last);
2587 },
2588 )
2589 });
2590 }
2591
2592 fn layout(
2593 &mut self,
2594 editor: &mut Editor,
2595 element_state: &mut Self::ElementState,
2596 cx: &mut gpui::ViewContext<Editor>,
2597 ) -> gpui::LayoutId {
2598 let rem_size = cx.rem_size();
2599 let mut style = Style::default();
2600 style.size.width = relative(1.).into();
2601 style.size.height = match editor.mode {
2602 EditorMode::SingleLine => self.style.text.line_height_in_pixels(cx.rem_size()).into(),
2603 EditorMode::AutoHeight { .. } => todo!(),
2604 EditorMode::Full => relative(1.).into(),
2605 };
2606 cx.request_layout(&style, None)
2607 }
2608
2609 fn paint(
2610 &mut self,
2611 bounds: Bounds<gpui::Pixels>,
2612 editor: &mut Editor,
2613 element_state: &mut Self::ElementState,
2614 cx: &mut gpui::ViewContext<Editor>,
2615 ) {
2616 let mut layout = self.compute_layout(editor, cx, bounds);
2617 let gutter_bounds = Bounds {
2618 origin: bounds.origin,
2619 size: layout.gutter_size,
2620 };
2621 let text_bounds = Bounds {
2622 origin: gutter_bounds.upper_right(),
2623 size: layout.text_size,
2624 };
2625
2626 // We call with_z_index to establish a new stacking context.
2627 cx.with_z_index(0, |cx| {
2628 cx.with_content_mask(ContentMask { bounds }, |cx| {
2629 self.paint_mouse_listeners(
2630 bounds,
2631 gutter_bounds,
2632 text_bounds,
2633 &layout.position_map,
2634 cx,
2635 );
2636
2637 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2638 if layout.gutter_size.width > Pixels::ZERO {
2639 self.paint_gutter(gutter_bounds, &mut layout, editor, cx);
2640 }
2641
2642 self.paint_text(text_bounds, &mut layout, editor, cx);
2643
2644 if !layout.blocks.is_empty() {
2645 self.paint_blocks(bounds, &mut layout, editor, cx);
2646 }
2647
2648 let input_handler = ElementInputHandler::new(bounds, cx);
2649 cx.handle_input(&editor.focus_handle, input_handler);
2650 });
2651 });
2652 }
2653}
2654
2655// impl EditorElement {
2656// type LayoutState = LayoutState;
2657// type PaintState = ();
2658
2659// fn layout(
2660// &mut self,
2661// constraint: SizeConstraint,
2662// editor: &mut Editor,
2663// cx: &mut ViewContext<Editor>,
2664// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2665// let mut size = constraint.max;
2666// if size.x.is_infinite() {
2667// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2668// }
2669
2670// let snapshot = editor.snapshot(cx);
2671// let style = self.style.clone();
2672
2673// let line_height = (style.text.font_size * style.line_height_scalar).round();
2674
2675// let gutter_padding;
2676// let gutter_width;
2677// let gutter_margin;
2678// if snapshot.show_gutter {
2679// let em_width = style.text.em_width(cx.font_cache());
2680// gutter_padding = (em_width * style.gutter_padding_factor).round();
2681// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2682// gutter_margin = -style.text.descent(cx.font_cache());
2683// } else {
2684// gutter_padding = 0.0;
2685// gutter_width = 0.0;
2686// gutter_margin = 0.0;
2687// };
2688
2689// let text_width = size.x - gutter_width;
2690// let em_width = style.text.em_width(cx.font_cache());
2691// let em_advance = style.text.em_advance(cx.font_cache());
2692// let overscroll = point(em_width, 0.);
2693// let snapshot = {
2694// editor.set_visible_line_count(size.y / line_height, cx);
2695
2696// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2697// let wrap_width = match editor.soft_wrap_mode(cx) {
2698// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2699// SoftWrap::EditorWidth => editor_width,
2700// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2701// };
2702
2703// if editor.set_wrap_width(Some(wrap_width), cx) {
2704// editor.snapshot(cx)
2705// } else {
2706// snapshot
2707// }
2708// };
2709
2710// let wrap_guides = editor
2711// .wrap_guides(cx)
2712// .iter()
2713// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2714// .collect();
2715
2716// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2717// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2718// size.set_y(
2719// scroll_height
2720// .min(constraint.max_along(Axis::Vertical))
2721// .max(constraint.min_along(Axis::Vertical))
2722// .max(line_height)
2723// .min(line_height * max_lines as f32),
2724// )
2725// } else if let EditorMode::SingleLine = snapshot.mode {
2726// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2727// } else if size.y.is_infinite() {
2728// size.set_y(scroll_height);
2729// }
2730// let gutter_size = point(gutter_width, size.y);
2731// let text_size = point(text_width, size.y);
2732
2733// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2734// let mut snapshot = editor.snapshot(cx);
2735
2736// let scroll_position = snapshot.scroll_position();
2737// // The scroll position is a fractional point, the whole number of which represents
2738// // the top of the window in terms of display rows.
2739// let start_row = scroll_position.y as u32;
2740// let height_in_lines = size.y / line_height;
2741// let max_row = snapshot.max_point().row();
2742
2743// // Add 1 to ensure selections bleed off screen
2744// let end_row = 1 + cmp::min(
2745// (scroll_position.y + height_in_lines).ceil() as u32,
2746// max_row,
2747// );
2748
2749// let start_anchor = if start_row == 0 {
2750// Anchor::min()
2751// } else {
2752// snapshot
2753// .buffer_snapshot
2754// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2755// };
2756// let end_anchor = if end_row > max_row {
2757// Anchor::max
2758// } else {
2759// snapshot
2760// .buffer_snapshot
2761// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2762// };
2763
2764// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2765// let mut active_rows = BTreeMap::new();
2766// let mut fold_ranges = Vec::new();
2767// let is_singleton = editor.is_singleton(cx);
2768
2769// let highlighted_rows = editor.highlighted_rows();
2770// let theme = theme::current(cx);
2771// let highlighted_ranges = editor.background_highlights_in_range(
2772// start_anchor..end_anchor,
2773// &snapshot.display_snapshot,
2774// theme.as_ref(),
2775// );
2776
2777// fold_ranges.extend(
2778// snapshot
2779// .folds_in_range(start_anchor..end_anchor)
2780// .map(|anchor| {
2781// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2782// (
2783// start.row,
2784// start.to_display_point(&snapshot.display_snapshot)
2785// ..anchor.end.to_display_point(&snapshot),
2786// )
2787// }),
2788// );
2789
2790// let mut newest_selection_head = None;
2791
2792// if editor.show_local_selections {
2793// let mut local_selections: Vec<Selection<Point>> = editor
2794// .selections
2795// .disjoint_in_range(start_anchor..end_anchor, cx);
2796// local_selections.extend(editor.selections.pending(cx));
2797// let mut layouts = Vec::new();
2798// let newest = editor.selections.newest(cx);
2799// for selection in local_selections.drain(..) {
2800// let is_empty = selection.start == selection.end;
2801// let is_newest = selection == newest;
2802
2803// let layout = SelectionLayout::new(
2804// selection,
2805// editor.selections.line_mode,
2806// editor.cursor_shape,
2807// &snapshot.display_snapshot,
2808// is_newest,
2809// true,
2810// );
2811// if is_newest {
2812// newest_selection_head = Some(layout.head);
2813// }
2814
2815// for row in cmp::max(layout.active_rows.start, start_row)
2816// ..=cmp::min(layout.active_rows.end, end_row)
2817// {
2818// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2819// *contains_non_empty_selection |= !is_empty;
2820// }
2821// layouts.push(layout);
2822// }
2823
2824// selections.push((style.selection, layouts));
2825// }
2826
2827// if let Some(collaboration_hub) = &editor.collaboration_hub {
2828// // When following someone, render the local selections in their color.
2829// if let Some(leader_id) = editor.leader_peer_id {
2830// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2831// if let Some(participant_index) = collaboration_hub
2832// .user_participant_indices(cx)
2833// .get(&collaborator.user_id)
2834// {
2835// if let Some((local_selection_style, _)) = selections.first_mut() {
2836// *local_selection_style =
2837// style.selection_style_for_room_participant(participant_index.0);
2838// }
2839// }
2840// }
2841// }
2842
2843// let mut remote_selections = HashMap::default();
2844// for selection in snapshot.remote_selections_in_range(
2845// &(start_anchor..end_anchor),
2846// collaboration_hub.as_ref(),
2847// cx,
2848// ) {
2849// let selection_style = if let Some(participant_index) = selection.participant_index {
2850// style.selection_style_for_room_participant(participant_index.0)
2851// } else {
2852// style.absent_selection
2853// };
2854
2855// // Don't re-render the leader's selections, since the local selections
2856// // match theirs.
2857// if Some(selection.peer_id) == editor.leader_peer_id {
2858// continue;
2859// }
2860
2861// remote_selections
2862// .entry(selection.replica_id)
2863// .or_insert((selection_style, Vec::new()))
2864// .1
2865// .push(SelectionLayout::new(
2866// selection.selection,
2867// selection.line_mode,
2868// selection.cursor_shape,
2869// &snapshot.display_snapshot,
2870// false,
2871// false,
2872// ));
2873// }
2874
2875// selections.extend(remote_selections.into_values());
2876// }
2877
2878// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2879// let show_scrollbars = match scrollbar_settings.show {
2880// ShowScrollbar::Auto => {
2881// // Git
2882// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2883// ||
2884// // Selections
2885// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2886// // Scrollmanager
2887// || editor.scroll_manager.scrollbars_visible()
2888// }
2889// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2890// ShowScrollbar::Always => true,
2891// ShowScrollbar::Never => false,
2892// };
2893
2894// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2895// .into_iter()
2896// .map(|(id, fold)| {
2897// let color = self
2898// .style
2899// .folds
2900// .ellipses
2901// .background
2902// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2903// .color;
2904
2905// (id, fold, color)
2906// })
2907// .collect();
2908
2909// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2910// let newest = editor.selections.newest::<Point>(cx);
2911// SelectionLayout::new(
2912// newest,
2913// editor.selections.line_mode,
2914// editor.cursor_shape,
2915// &snapshot.display_snapshot,
2916// true,
2917// true,
2918// )
2919// .head
2920// });
2921
2922// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2923// start_row..end_row,
2924// &active_rows,
2925// head_for_relative,
2926// is_singleton,
2927// &snapshot,
2928// cx,
2929// );
2930
2931// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2932
2933// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2934
2935// let mut max_visible_line_width = 0.0;
2936// let line_layouts =
2937// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2938// for line_with_invisibles in &line_layouts {
2939// if line_with_invisibles.line.width() > max_visible_line_width {
2940// max_visible_line_width = line_with_invisibles.line.width();
2941// }
2942// }
2943
2944// let style = self.style.clone();
2945// let longest_line_width = layout_line(
2946// snapshot.longest_row(),
2947// &snapshot,
2948// &style,
2949// cx.text_layout_cache(),
2950// )
2951// .width();
2952// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2953// let em_width = style.text.em_width(cx.font_cache());
2954// let (scroll_width, blocks) = self.layout_blocks(
2955// start_row..end_row,
2956// &snapshot,
2957// size.x,
2958// scroll_width,
2959// gutter_padding,
2960// gutter_width,
2961// em_width,
2962// gutter_width + gutter_margin,
2963// line_height,
2964// &style,
2965// &line_layouts,
2966// editor,
2967// cx,
2968// );
2969
2970// let scroll_max = point(
2971// ((scroll_width - text_size.x) / em_width).max(0.0),
2972// max_row as f32,
2973// );
2974
2975// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2976
2977// let autoscrolled = if autoscroll_horizontally {
2978// editor.autoscroll_horizontally(
2979// start_row,
2980// text_size.x,
2981// scroll_width,
2982// em_width,
2983// &line_layouts,
2984// cx,
2985// )
2986// } else {
2987// false
2988// };
2989
2990// if clamped || autoscrolled {
2991// snapshot = editor.snapshot(cx);
2992// }
2993
2994// let style = editor.style(cx);
2995
2996// let mut context_menu = None;
2997// let mut code_actions_indicator = None;
2998// if let Some(newest_selection_head) = newest_selection_head {
2999// if (start_row..end_row).contains(&newest_selection_head.row()) {
3000// if editor.context_menu_visible() {
3001// context_menu =
3002// editor.render_context_menu(newest_selection_head, style.clone(), cx);
3003// }
3004
3005// let active = matches!(
3006// editor.context_menu.read().as_ref(),
3007// Some(crate::ContextMenu::CodeActions(_))
3008// );
3009
3010// code_actions_indicator = editor
3011// .render_code_actions_indicator(&style, active, cx)
3012// .map(|indicator| (newest_selection_head.row(), indicator));
3013// }
3014// }
3015
3016// let visible_rows = start_row..start_row + line_layouts.len() as u32;
3017// let mut hover = editor.hover_state.render(
3018// &snapshot,
3019// &style,
3020// visible_rows,
3021// editor.workspace.as_ref().map(|(w, _)| w.clone()),
3022// cx,
3023// );
3024// let mode = editor.mode;
3025
3026// let mut fold_indicators = editor.render_fold_indicators(
3027// fold_statuses,
3028// &style,
3029// editor.gutter_hovered,
3030// line_height,
3031// gutter_margin,
3032// cx,
3033// );
3034
3035// if let Some((_, context_menu)) = context_menu.as_mut() {
3036// context_menu.layout(
3037// SizeConstraint {
3038// min: gpui::Point::<Pixels>::zero(),
3039// max: point(
3040// cx.window_size().x * 0.7,
3041// (12. * line_height).min((size.y - line_height) / 2.),
3042// ),
3043// },
3044// editor,
3045// cx,
3046// );
3047// }
3048
3049// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
3050// indicator.layout(
3051// SizeConstraint::strict_along(
3052// Axis::Vertical,
3053// line_height * style.code_actions.vertical_scale,
3054// ),
3055// editor,
3056// cx,
3057// );
3058// }
3059
3060// for fold_indicator in fold_indicators.iter_mut() {
3061// if let Some(indicator) = fold_indicator.as_mut() {
3062// indicator.layout(
3063// SizeConstraint::strict_along(
3064// Axis::Vertical,
3065// line_height * style.code_actions.vertical_scale,
3066// ),
3067// editor,
3068// cx,
3069// );
3070// }
3071// }
3072
3073// if let Some((_, hover_popovers)) = hover.as_mut() {
3074// for hover_popover in hover_popovers.iter_mut() {
3075// hover_popover.layout(
3076// SizeConstraint {
3077// min: gpui::Point::<Pixels>::zero(),
3078// max: point(
3079// (120. * em_width) // Default size
3080// .min(size.x / 2.) // Shrink to half of the editor width
3081// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3082// (16. * line_height) // Default size
3083// .min(size.y / 2.) // Shrink to half of the editor height
3084// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3085// ),
3086// },
3087// editor,
3088// cx,
3089// );
3090// }
3091// }
3092
3093// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
3094// let invisible_symbol_style = RunStyle {
3095// color: self.style.whitespace,
3096// font_id: self.style.text.font_id,
3097// underline: Default::default(),
3098// };
3099
3100// (
3101// size,
3102// LayoutState {
3103// mode,
3104// position_map: Arc::new(PositionMap {
3105// size,
3106// scroll_max,
3107// line_layouts,
3108// line_height,
3109// em_width,
3110// em_advance,
3111// snapshot,
3112// }),
3113// visible_display_row_range: start_row..end_row,
3114// wrap_guides,
3115// gutter_size,
3116// gutter_padding,
3117// text_size,
3118// scrollbar_row_range,
3119// show_scrollbars,
3120// is_singleton,
3121// max_row,
3122// gutter_margin,
3123// active_rows,
3124// highlighted_rows,
3125// highlighted_ranges,
3126// fold_ranges,
3127// line_number_layouts,
3128// display_hunks,
3129// blocks,
3130// selections,
3131// context_menu,
3132// code_actions_indicator,
3133// fold_indicators,
3134// tab_invisible: cx.text_layout_cache().layout_str(
3135// "→",
3136// invisible_symbol_font_size,
3137// &[("→".len(), invisible_symbol_style)],
3138// ),
3139// space_invisible: cx.text_layout_cache().layout_str(
3140// "•",
3141// invisible_symbol_font_size,
3142// &[("•".len(), invisible_symbol_style)],
3143// ),
3144// hover_popovers: hover,
3145// },
3146// )
3147// }
3148
3149// fn paint(
3150// &mut self,
3151// bounds: Bounds<Pixels>,
3152// visible_bounds: Bounds<Pixels>,
3153// layout: &mut Self::LayoutState,
3154// editor: &mut Editor,
3155// cx: &mut ViewContext<Editor>,
3156// ) -> Self::PaintState {
3157// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
3158// cx.scene().push_layer(Some(visible_bounds));
3159
3160// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
3161// let text_bounds = Bounds::<Pixels>::new(
3162// bounds.origin + point(layout.gutter_size.x, 0.0),
3163// layout.text_size,
3164// );
3165
3166// Self::attach_mouse_handlers(
3167// &layout.position_map,
3168// layout.hover_popovers.is_some(),
3169// visible_bounds,
3170// text_bounds,
3171// gutter_bounds,
3172// bounds,
3173// cx,
3174// );
3175
3176// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3177// if layout.gutter_size.x > 0. {
3178// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3179// }
3180// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3181
3182// cx.scene().push_layer(Some(bounds));
3183// if !layout.blocks.is_empty {
3184// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3185// }
3186// self.paint_scrollbar(bounds, layout, &editor, cx);
3187// cx.scene().pop_layer();
3188// cx.scene().pop_layer();
3189// }
3190
3191// fn rect_for_text_range(
3192// &self,
3193// range_utf16: Range<usize>,
3194// bounds: Bounds<Pixels>,
3195// _: Bounds<Pixels>,
3196// layout: &Self::LayoutState,
3197// _: &Self::PaintState,
3198// _: &Editor,
3199// _: &ViewContext<Editor>,
3200// ) -> Option<Bounds<Pixels>> {
3201// let text_bounds = Bounds::<Pixels>::new(
3202// bounds.origin + point(layout.gutter_size.x, 0.0),
3203// layout.text_size,
3204// );
3205// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3206// let scroll_position = layout.position_map.snapshot.scroll_position();
3207// let start_row = scroll_position.y as u32;
3208// let scroll_top = scroll_position.y * layout.position_map.line_height;
3209// let scroll_left = scroll_position.x * layout.position_map.em_width;
3210
3211// let range_start = OffsetUtf16(range_utf16.start)
3212// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3213// if range_start.row() < start_row {
3214// return None;
3215// }
3216
3217// let line = &layout
3218// .position_map
3219// .line_layouts
3220// .get((range_start.row() - start_row) as usize)?
3221// .line;
3222// let range_start_x = line.x_for_index(range_start.column() as usize);
3223// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3224// Some(Bounds::<Pixels>::new(
3225// content_origin
3226// + point(
3227// range_start_x,
3228// range_start_y + layout.position_map.line_height,
3229// )
3230// - point(scroll_left, scroll_top),
3231// point(
3232// layout.position_map.em_width,
3233// layout.position_map.line_height,
3234// ),
3235// ))
3236// }
3237
3238// fn debug(
3239// &self,
3240// bounds: Bounds<Pixels>,
3241// _: &Self::LayoutState,
3242// _: &Self::PaintState,
3243// _: &Editor,
3244// _: &ViewContext<Editor>,
3245// ) -> json::Value {
3246// json!({
3247// "type": "BufferElement",
3248// "bounds": bounds.to_json()
3249// })
3250// }
3251// }
3252
3253type BufferRow = u32;
3254
3255pub struct LayoutState {
3256 position_map: Arc<PositionMap>,
3257 gutter_size: Size<Pixels>,
3258 gutter_padding: Pixels,
3259 gutter_margin: Pixels,
3260 text_size: gpui::Size<Pixels>,
3261 mode: EditorMode,
3262 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3263 visible_display_row_range: Range<u32>,
3264 active_rows: BTreeMap<u32, bool>,
3265 highlighted_rows: Option<Range<u32>>,
3266 line_number_layouts: Vec<Option<gpui::Line>>,
3267 display_hunks: Vec<DisplayDiffHunk>,
3268 blocks: Vec<BlockLayout>,
3269 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3270 fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)>,
3271 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3272 scrollbar_row_range: Range<f32>,
3273 show_scrollbars: bool,
3274 is_singleton: bool,
3275 max_row: u32,
3276 context_menu: Option<(DisplayPoint, AnyElement<Editor>)>,
3277 code_actions_indicator: Option<CodeActionsIndicator>,
3278 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement<Editor>>)>,
3279 // fold_indicators: Vec<Option<AnyElement<Editor>>>,
3280 tab_invisible: Line,
3281 space_invisible: Line,
3282}
3283
3284struct CodeActionsIndicator {
3285 row: u32,
3286 element: AnyElement<Editor>,
3287}
3288
3289struct PositionMap {
3290 size: Size<Pixels>,
3291 line_height: Pixels,
3292 scroll_max: gpui::Point<f32>,
3293 em_width: Pixels,
3294 em_advance: Pixels,
3295 line_layouts: Vec<LineWithInvisibles>,
3296 snapshot: EditorSnapshot,
3297}
3298
3299#[derive(Debug, Copy, Clone)]
3300pub struct PointForPosition {
3301 pub previous_valid: DisplayPoint,
3302 pub next_valid: DisplayPoint,
3303 pub exact_unclipped: DisplayPoint,
3304 pub column_overshoot_after_line_end: u32,
3305}
3306
3307impl PointForPosition {
3308 #[cfg(test)]
3309 pub fn valid(valid: DisplayPoint) -> Self {
3310 Self {
3311 previous_valid: valid,
3312 next_valid: valid,
3313 exact_unclipped: valid,
3314 column_overshoot_after_line_end: 0,
3315 }
3316 }
3317
3318 pub fn as_valid(&self) -> Option<DisplayPoint> {
3319 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3320 Some(self.previous_valid)
3321 } else {
3322 None
3323 }
3324 }
3325}
3326
3327impl PositionMap {
3328 fn point_for_position(
3329 &self,
3330 text_bounds: Bounds<Pixels>,
3331 position: gpui::Point<Pixels>,
3332 ) -> PointForPosition {
3333 let scroll_position = self.snapshot.scroll_position();
3334 let position = position - text_bounds.origin;
3335 let y = position.y.max(px(0.)).min(self.size.width);
3336 let x = position.x + (scroll_position.x * self.em_width);
3337 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3338
3339 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3340 .line_layouts
3341 .get(row as usize - scroll_position.y as usize)
3342 .map(|&LineWithInvisibles { ref line, .. }| line)
3343 {
3344 if let Some(ix) = line.index_for_x(x) {
3345 (ix as u32, px(0.))
3346 } else {
3347 (line.len as u32, px(0.).max(x - line.width))
3348 }
3349 } else {
3350 (0, x)
3351 };
3352
3353 let mut exact_unclipped = DisplayPoint::new(row, column);
3354 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3355 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3356
3357 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3358 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3359 PointForPosition {
3360 previous_valid,
3361 next_valid,
3362 exact_unclipped,
3363 column_overshoot_after_line_end,
3364 }
3365 }
3366}
3367
3368struct BlockLayout {
3369 row: u32,
3370 element: AnyElement<Editor>,
3371 available_space: Size<AvailableSpace>,
3372 style: BlockStyle,
3373}
3374
3375fn layout_line(
3376 row: u32,
3377 snapshot: &EditorSnapshot,
3378 style: &EditorStyle,
3379 cx: &WindowContext,
3380) -> Result<Line> {
3381 let mut line = snapshot.line(row);
3382
3383 if line.len() > MAX_LINE_LEN {
3384 let mut len = MAX_LINE_LEN;
3385 while !line.is_char_boundary(len) {
3386 len -= 1;
3387 }
3388
3389 line.truncate(len);
3390 }
3391
3392 Ok(cx
3393 .text_system()
3394 .layout_text(
3395 &line,
3396 style.text.font_size.to_pixels(cx.rem_size()),
3397 &[TextRun {
3398 len: snapshot.line_len(row) as usize,
3399 font: style.text.font(),
3400 color: Hsla::default(),
3401 underline: None,
3402 }],
3403 None,
3404 )?
3405 .pop()
3406 .unwrap())
3407}
3408
3409#[derive(Debug)]
3410pub struct Cursor {
3411 origin: gpui::Point<Pixels>,
3412 block_width: Pixels,
3413 line_height: Pixels,
3414 color: Hsla,
3415 shape: CursorShape,
3416 block_text: Option<Line>,
3417}
3418
3419impl Cursor {
3420 pub fn new(
3421 origin: gpui::Point<Pixels>,
3422 block_width: Pixels,
3423 line_height: Pixels,
3424 color: Hsla,
3425 shape: CursorShape,
3426 block_text: Option<Line>,
3427 ) -> Cursor {
3428 Cursor {
3429 origin,
3430 block_width,
3431 line_height,
3432 color,
3433 shape,
3434 block_text,
3435 }
3436 }
3437
3438 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3439 Bounds {
3440 origin: self.origin + origin,
3441 size: size(self.block_width, self.line_height),
3442 }
3443 }
3444
3445 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3446 let bounds = match self.shape {
3447 CursorShape::Bar => Bounds {
3448 origin: self.origin + origin,
3449 size: size(px(2.0), self.line_height),
3450 },
3451 CursorShape::Block | CursorShape::Hollow => Bounds {
3452 origin: self.origin + origin,
3453 size: size(self.block_width, self.line_height),
3454 },
3455 CursorShape::Underscore => Bounds {
3456 origin: self.origin
3457 + origin
3458 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3459 size: size(self.block_width, px(2.0)),
3460 },
3461 };
3462
3463 //Draw background or border quad
3464 if matches!(self.shape, CursorShape::Hollow) {
3465 cx.paint_quad(
3466 bounds,
3467 Corners::default(),
3468 transparent_black(),
3469 Edges::all(px(1.)),
3470 self.color,
3471 );
3472 } else {
3473 cx.paint_quad(
3474 bounds,
3475 Corners::default(),
3476 self.color,
3477 Edges::default(),
3478 transparent_black(),
3479 );
3480 }
3481
3482 if let Some(block_text) = &self.block_text {
3483 block_text.paint(self.origin + origin, self.line_height, cx);
3484 }
3485 }
3486
3487 pub fn shape(&self) -> CursorShape {
3488 self.shape
3489 }
3490}
3491
3492#[derive(Debug)]
3493pub struct HighlightedRange {
3494 pub start_y: Pixels,
3495 pub line_height: Pixels,
3496 pub lines: Vec<HighlightedRangeLine>,
3497 pub color: Hsla,
3498 pub corner_radius: Pixels,
3499}
3500
3501#[derive(Debug)]
3502pub struct HighlightedRangeLine {
3503 pub start_x: Pixels,
3504 pub end_x: Pixels,
3505}
3506
3507impl HighlightedRange {
3508 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3509 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3510 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3511 self.paint_lines(
3512 self.start_y + self.line_height,
3513 &self.lines[1..],
3514 bounds,
3515 cx,
3516 );
3517 } else {
3518 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3519 }
3520 }
3521
3522 fn paint_lines(
3523 &self,
3524 start_y: Pixels,
3525 lines: &[HighlightedRangeLine],
3526 bounds: Bounds<Pixels>,
3527 cx: &mut WindowContext,
3528 ) {
3529 if lines.is_empty() {
3530 return;
3531 }
3532
3533 let first_line = lines.first().unwrap();
3534 let last_line = lines.last().unwrap();
3535
3536 let first_top_left = point(first_line.start_x, start_y);
3537 let first_top_right = point(first_line.end_x, start_y);
3538
3539 let curve_height = point(Pixels::ZERO, self.corner_radius);
3540 let curve_width = |start_x: Pixels, end_x: Pixels| {
3541 let max = (end_x - start_x) / 2.;
3542 let width = if max < self.corner_radius {
3543 max
3544 } else {
3545 self.corner_radius
3546 };
3547
3548 point(width, Pixels::ZERO)
3549 };
3550
3551 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3552 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3553 path.curve_to(first_top_right + curve_height, first_top_right);
3554
3555 let mut iter = lines.iter().enumerate().peekable();
3556 while let Some((ix, line)) = iter.next() {
3557 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3558
3559 if let Some((_, next_line)) = iter.peek() {
3560 let next_top_right = point(next_line.end_x, bottom_right.y);
3561
3562 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3563 Ordering::Equal => {
3564 path.line_to(bottom_right);
3565 }
3566 Ordering::Less => {
3567 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3568 path.line_to(bottom_right - curve_height);
3569 if self.corner_radius > Pixels::ZERO {
3570 path.curve_to(bottom_right - curve_width, bottom_right);
3571 }
3572 path.line_to(next_top_right + curve_width);
3573 if self.corner_radius > Pixels::ZERO {
3574 path.curve_to(next_top_right + curve_height, next_top_right);
3575 }
3576 }
3577 Ordering::Greater => {
3578 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3579 path.line_to(bottom_right - curve_height);
3580 if self.corner_radius > Pixels::ZERO {
3581 path.curve_to(bottom_right + curve_width, bottom_right);
3582 }
3583 path.line_to(next_top_right - curve_width);
3584 if self.corner_radius > Pixels::ZERO {
3585 path.curve_to(next_top_right + curve_height, next_top_right);
3586 }
3587 }
3588 }
3589 } else {
3590 let curve_width = curve_width(line.start_x, line.end_x);
3591 path.line_to(bottom_right - curve_height);
3592 if self.corner_radius > Pixels::ZERO {
3593 path.curve_to(bottom_right - curve_width, bottom_right);
3594 }
3595
3596 let bottom_left = point(line.start_x, bottom_right.y);
3597 path.line_to(bottom_left + curve_width);
3598 if self.corner_radius > Pixels::ZERO {
3599 path.curve_to(bottom_left - curve_height, bottom_left);
3600 }
3601 }
3602 }
3603
3604 if first_line.start_x > last_line.start_x {
3605 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3606 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3607 path.line_to(second_top_left + curve_height);
3608 if self.corner_radius > Pixels::ZERO {
3609 path.curve_to(second_top_left + curve_width, second_top_left);
3610 }
3611 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3612 path.line_to(first_bottom_left - curve_width);
3613 if self.corner_radius > Pixels::ZERO {
3614 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3615 }
3616 }
3617
3618 path.line_to(first_top_left + curve_height);
3619 if self.corner_radius > Pixels::ZERO {
3620 path.curve_to(first_top_left + top_curve_width, first_top_left);
3621 }
3622 path.line_to(first_top_right - top_curve_width);
3623
3624 cx.paint_path(path, self.color);
3625 }
3626}
3627
3628// fn range_to_bounds(
3629// range: &Range<DisplayPoint>,
3630// content_origin: gpui::Point<Pixels>,
3631// scroll_left: f32,
3632// scroll_top: f32,
3633// visible_row_range: &Range<u32>,
3634// line_end_overshoot: f32,
3635// position_map: &PositionMap,
3636// ) -> impl Iterator<Item = Bounds<Pixels>> {
3637// let mut bounds: SmallVec<[Bounds<Pixels>; 1]> = SmallVec::new();
3638
3639// if range.start == range.end {
3640// return bounds.into_iter();
3641// }
3642
3643// let start_row = visible_row_range.start;
3644// let end_row = visible_row_range.end;
3645
3646// let row_range = if range.end.column() == 0 {
3647// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3648// } else {
3649// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
3650// };
3651
3652// let first_y =
3653// content_origin.y + row_range.start as f32 * position_map.line_height - scroll_top;
3654
3655// for (idx, row) in row_range.enumerate() {
3656// let line_layout = &position_map.line_layouts[(row - start_row) as usize].line;
3657
3658// let start_x = if row == range.start.row() {
3659// content_origin.x + line_layout.x_for_index(range.start.column() as usize)
3660// - scroll_left
3661// } else {
3662// content_origin.x - scroll_left
3663// };
3664
3665// let end_x = if row == range.end.row() {
3666// content_origin.x + line_layout.x_for_index(range.end.column() as usize) - scroll_left
3667// } else {
3668// content_origin.x + line_layout.width() + line_end_overshoot - scroll_left
3669// };
3670
3671// bounds.push(Bounds::<Pixels>::from_points(
3672// point(start_x, first_y + position_map.line_height * idx as f32),
3673// point(end_x, first_y + position_map.line_height * (idx + 1) as f32),
3674// ))
3675// }
3676
3677// bounds.into_iter()
3678// }
3679
3680pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3681 (delta.pow(1.5) / 100.0).into()
3682}
3683
3684fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3685 (delta.pow(1.2) / 300.0).into()
3686}
3687
3688// #[cfg(test)]
3689// mod tests {
3690// use super::*;
3691// use crate::{
3692// display_map::{BlockDisposition, BlockProperties},
3693// editor_tests::{init_test, update_test_language_settings},
3694// Editor, MultiBuffer,
3695// };
3696// use gpui::TestAppContext;
3697// use language::language_settings;
3698// use log::info;
3699// use std::{num::NonZeroU32, sync::Arc};
3700// use util::test::sample_text;
3701
3702// #[gpui::test]
3703// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3704// init_test(cx, |_| {});
3705// let editor = cx
3706// .add_window(|cx| {
3707// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3708// Editor::new(EditorMode::Full, buffer, None, None, cx)
3709// })
3710// .root(cx);
3711// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3712
3713// let layouts = editor.update(cx, |editor, cx| {
3714// let snapshot = editor.snapshot(cx);
3715// element
3716// .layout_line_numbers(
3717// 0..6,
3718// &Default::default(),
3719// DisplayPoint::new(0, 0),
3720// false,
3721// &snapshot,
3722// cx,
3723// )
3724// .0
3725// });
3726// assert_eq!(layouts.len(), 6);
3727
3728// let relative_rows = editor.update(cx, |editor, cx| {
3729// let snapshot = editor.snapshot(cx);
3730// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3731// });
3732// assert_eq!(relative_rows[&0], 3);
3733// assert_eq!(relative_rows[&1], 2);
3734// assert_eq!(relative_rows[&2], 1);
3735// // current line has no relative number
3736// assert_eq!(relative_rows[&4], 1);
3737// assert_eq!(relative_rows[&5], 2);
3738
3739// // works if cursor is before screen
3740// let relative_rows = editor.update(cx, |editor, cx| {
3741// let snapshot = editor.snapshot(cx);
3742
3743// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3744// });
3745// assert_eq!(relative_rows.len(), 3);
3746// assert_eq!(relative_rows[&3], 2);
3747// assert_eq!(relative_rows[&4], 3);
3748// assert_eq!(relative_rows[&5], 4);
3749
3750// // works if cursor is after screen
3751// let relative_rows = editor.update(cx, |editor, cx| {
3752// let snapshot = editor.snapshot(cx);
3753
3754// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3755// });
3756// assert_eq!(relative_rows.len(), 3);
3757// assert_eq!(relative_rows[&0], 5);
3758// assert_eq!(relative_rows[&1], 4);
3759// assert_eq!(relative_rows[&2], 3);
3760// }
3761
3762// #[gpui::test]
3763// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3764// init_test(cx, |_| {});
3765
3766// let editor = cx
3767// .add_window(|cx| {
3768// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3769// Editor::new(EditorMode::Full, buffer, None, None, cx)
3770// })
3771// .root(cx);
3772// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3773// let (_, state) = editor.update(cx, |editor, cx| {
3774// editor.cursor_shape = CursorShape::Block;
3775// editor.change_selections(None, cx, |s| {
3776// s.select_ranges([
3777// Point::new(0, 0)..Point::new(1, 0),
3778// Point::new(3, 2)..Point::new(3, 3),
3779// Point::new(5, 6)..Point::new(6, 0),
3780// ]);
3781// });
3782// element.layout(
3783// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3784// editor,
3785// cx,
3786// )
3787// });
3788// assert_eq!(state.selections.len(), 1);
3789// let local_selections = &state.selections[0].1;
3790// assert_eq!(local_selections.len(), 3);
3791// // moves cursor back one line
3792// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3793// assert_eq!(
3794// local_selections[0].range,
3795// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3796// );
3797
3798// // moves cursor back one column
3799// assert_eq!(
3800// local_selections[1].range,
3801// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3802// );
3803// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3804
3805// // leaves cursor on the max point
3806// assert_eq!(
3807// local_selections[2].range,
3808// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3809// );
3810// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3811
3812// // active lines does not include 1 (even though the range of the selection does)
3813// assert_eq!(
3814// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3815// vec![0, 3, 5, 6]
3816// );
3817
3818// // multi-buffer support
3819// // in DisplayPoint co-ordinates, this is what we're dealing with:
3820// // 0: [[file
3821// // 1: header]]
3822// // 2: aaaaaa
3823// // 3: bbbbbb
3824// // 4: cccccc
3825// // 5:
3826// // 6: ...
3827// // 7: ffffff
3828// // 8: gggggg
3829// // 9: hhhhhh
3830// // 10:
3831// // 11: [[file
3832// // 12: header]]
3833// // 13: bbbbbb
3834// // 14: cccccc
3835// // 15: dddddd
3836// let editor = cx
3837// .add_window(|cx| {
3838// let buffer = MultiBuffer::build_multi(
3839// [
3840// (
3841// &(sample_text(8, 6, 'a') + "\n"),
3842// vec![
3843// Point::new(0, 0)..Point::new(3, 0),
3844// Point::new(4, 0)..Point::new(7, 0),
3845// ],
3846// ),
3847// (
3848// &(sample_text(8, 6, 'a') + "\n"),
3849// vec![Point::new(1, 0)..Point::new(3, 0)],
3850// ),
3851// ],
3852// cx,
3853// );
3854// Editor::new(EditorMode::Full, buffer, None, None, cx)
3855// })
3856// .root(cx);
3857// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3858// let (_, state) = editor.update(cx, |editor, cx| {
3859// editor.cursor_shape = CursorShape::Block;
3860// editor.change_selections(None, cx, |s| {
3861// s.select_display_ranges([
3862// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3863// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3864// ]);
3865// });
3866// element.layout(
3867// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3868// editor,
3869// cx,
3870// )
3871// });
3872
3873// assert_eq!(state.selections.len(), 1);
3874// let local_selections = &state.selections[0].1;
3875// assert_eq!(local_selections.len(), 2);
3876
3877// // moves cursor on excerpt boundary back a line
3878// // and doesn't allow selection to bleed through
3879// assert_eq!(
3880// local_selections[0].range,
3881// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3882// );
3883// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3884
3885// // moves cursor on buffer boundary back two lines
3886// // and doesn't allow selection to bleed through
3887// assert_eq!(
3888// local_selections[1].range,
3889// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3890// );
3891// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3892// }
3893
3894// #[gpui::test]
3895// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3896// init_test(cx, |_| {});
3897
3898// let editor = cx
3899// .add_window(|cx| {
3900// let buffer = MultiBuffer::build_simple("", cx);
3901// Editor::new(EditorMode::Full, buffer, None, None, cx)
3902// })
3903// .root(cx);
3904
3905// editor.update(cx, |editor, cx| {
3906// editor.set_placeholder_text("hello", cx);
3907// editor.insert_blocks(
3908// [BlockProperties {
3909// style: BlockStyle::Fixed,
3910// disposition: BlockDisposition::Above,
3911// height: 3,
3912// position: Anchor::min(),
3913// render: Arc::new(|_| Empty::new().into_any),
3914// }],
3915// None,
3916// cx,
3917// );
3918
3919// // Blur the editor so that it displays placeholder text.
3920// cx.blur();
3921// });
3922
3923// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3924// let (size, mut state) = editor.update(cx, |editor, cx| {
3925// element.layout(
3926// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3927// editor,
3928// cx,
3929// )
3930// });
3931
3932// assert_eq!(state.position_map.line_layouts.len(), 4);
3933// assert_eq!(
3934// state
3935// .line_number_layouts
3936// .iter()
3937// .map(Option::is_some)
3938// .collect::<Vec<_>>(),
3939// &[false, false, false, true]
3940// );
3941
3942// // Don't panic.
3943// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3944// editor.update(cx, |editor, cx| {
3945// element.paint(bounds, bounds, &mut state, editor, cx);
3946// });
3947// }
3948
3949// #[gpui::test]
3950// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3951// const TAB_SIZE: u32 = 4;
3952
3953// let input_text = "\t \t|\t| a b";
3954// let expected_invisibles = vec![
3955// Invisible::Tab {
3956// line_start_offset: 0,
3957// },
3958// Invisible::Whitespace {
3959// line_offset: TAB_SIZE as usize,
3960// },
3961// Invisible::Tab {
3962// line_start_offset: TAB_SIZE as usize + 1,
3963// },
3964// Invisible::Tab {
3965// line_start_offset: TAB_SIZE as usize * 2 + 1,
3966// },
3967// Invisible::Whitespace {
3968// line_offset: TAB_SIZE as usize * 3 + 1,
3969// },
3970// Invisible::Whitespace {
3971// line_offset: TAB_SIZE as usize * 3 + 3,
3972// },
3973// ];
3974// assert_eq!(
3975// expected_invisibles.len(),
3976// input_text
3977// .chars()
3978// .filter(|initial_char| initial_char.is_whitespace())
3979// .count(),
3980// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3981// );
3982
3983// init_test(cx, |s| {
3984// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3985// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3986// });
3987
3988// let actual_invisibles =
3989// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3990
3991// assert_eq!(expected_invisibles, actual_invisibles);
3992// }
3993
3994// #[gpui::test]
3995// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3996// init_test(cx, |s| {
3997// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3998// s.defaults.tab_size = NonZeroU32::new(4);
3999// });
4000
4001// for editor_mode_without_invisibles in [
4002// EditorMode::SingleLine,
4003// EditorMode::AutoHeight { max_lines: 100 },
4004// ] {
4005// let invisibles = collect_invisibles_from_new_editor(
4006// cx,
4007// editor_mode_without_invisibles,
4008// "\t\t\t| | a b",
4009// 500.0,
4010// );
4011// assert!(invisibles.is_empty,
4012// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4013// }
4014// }
4015
4016// #[gpui::test]
4017// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4018// let tab_size = 4;
4019// let input_text = "a\tbcd ".repeat(9);
4020// let repeated_invisibles = [
4021// Invisible::Tab {
4022// line_start_offset: 1,
4023// },
4024// Invisible::Whitespace {
4025// line_offset: tab_size as usize + 3,
4026// },
4027// Invisible::Whitespace {
4028// line_offset: tab_size as usize + 4,
4029// },
4030// Invisible::Whitespace {
4031// line_offset: tab_size as usize + 5,
4032// },
4033// ];
4034// let expected_invisibles = std::iter::once(repeated_invisibles)
4035// .cycle()
4036// .take(9)
4037// .flatten()
4038// .collect::<Vec<_>>();
4039// assert_eq!(
4040// expected_invisibles.len(),
4041// input_text
4042// .chars()
4043// .filter(|initial_char| initial_char.is_whitespace())
4044// .count(),
4045// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4046// );
4047// info!("Expected invisibles: {expected_invisibles:?}");
4048
4049// init_test(cx, |_| {});
4050
4051// // Put the same string with repeating whitespace pattern into editors of various size,
4052// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4053// let resize_step = 10.0;
4054// let mut editor_width = 200.0;
4055// while editor_width <= 1000.0 {
4056// update_test_language_settings(cx, |s| {
4057// s.defaults.tab_size = NonZeroU32::new(tab_size);
4058// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4059// s.defaults.preferred_line_length = Some(editor_width as u32);
4060// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4061// });
4062
4063// let actual_invisibles =
4064// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
4065
4066// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4067// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4068// let mut i = 0;
4069// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4070// i = actual_index;
4071// match expected_invisibles.get(i) {
4072// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4073// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4074// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4075// _ => {
4076// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4077// }
4078// },
4079// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4080// }
4081// }
4082// let missing_expected_invisibles = &expected_invisibles[i + 1..];
4083// assert!(
4084// missing_expected_invisibles.is_empty,
4085// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4086// );
4087
4088// editor_width += resize_step;
4089// }
4090// }
4091
4092// fn collect_invisibles_from_new_editor(
4093// cx: &mut TestAppContext,
4094// editor_mode: EditorMode,
4095// input_text: &str,
4096// editor_width: f32,
4097// ) -> Vec<Invisible> {
4098// info!(
4099// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
4100// );
4101// let editor = cx
4102// .add_window(|cx| {
4103// let buffer = MultiBuffer::build_simple(&input_text, cx);
4104// Editor::new(editor_mode, buffer, None, None, cx)
4105// })
4106// .root(cx);
4107
4108// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
4109// let (_, layout_state) = editor.update(cx, |editor, cx| {
4110// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4111// editor.set_wrap_width(Some(editor_width), cx);
4112
4113// element.layout(
4114// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
4115// editor,
4116// cx,
4117// )
4118// });
4119
4120// layout_state
4121// .position_map
4122// .line_layouts
4123// .iter()
4124// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
4125// .flatten()
4126// .cloned()
4127// .collect()
4128// }
4129// }
4130
4131fn register_action<T: Action>(
4132 cx: &mut ViewContext<Editor>,
4133 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4134) {
4135 cx.on_action(TypeId::of::<T>(), move |editor, action, phase, cx| {
4136 let action = action.downcast_ref().unwrap();
4137 if phase == DispatchPhase::Bubble {
4138 listener(editor, action, cx);
4139 }
4140 })
4141}