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 dbg!(&style.text.font());
1453 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1454 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1455 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1456 let em_width = cx
1457 .text_system()
1458 .typographic_bounds(font_id, font_size, 'm')
1459 .unwrap()
1460 .size
1461 .width;
1462 let em_advance = cx
1463 .text_system()
1464 .advance(font_id, font_size, 'm')
1465 .unwrap()
1466 .width;
1467
1468 let gutter_padding;
1469 let gutter_width;
1470 let gutter_margin;
1471 if snapshot.show_gutter {
1472 let descent = cx.text_system().descent(font_id, font_size).unwrap();
1473
1474 let gutter_padding_factor = 3.5;
1475 gutter_padding = (em_width * gutter_padding_factor).round();
1476 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1477 gutter_margin = -descent;
1478 } else {
1479 gutter_padding = Pixels::ZERO;
1480 gutter_width = Pixels::ZERO;
1481 gutter_margin = Pixels::ZERO;
1482 };
1483
1484 editor.gutter_width = gutter_width;
1485 let text_width = bounds.size.width - gutter_width;
1486 let overscroll = size(em_width, px(0.));
1487 let snapshot = {
1488 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1489
1490 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1491 let wrap_width = match editor.soft_wrap_mode(cx) {
1492 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1493 SoftWrap::EditorWidth => editor_width,
1494 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1495 };
1496
1497 if editor.set_wrap_width(Some(wrap_width), cx) {
1498 editor.snapshot(cx)
1499 } else {
1500 snapshot
1501 }
1502 };
1503
1504 let wrap_guides = editor
1505 .wrap_guides(cx)
1506 .iter()
1507 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1508 .collect::<SmallVec<[_; 2]>>();
1509
1510 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1511 // todo!("this should happen during layout")
1512 let editor_mode = snapshot.mode;
1513 if let EditorMode::AutoHeight { max_lines } = editor_mode {
1514 todo!()
1515 // size.set_y(
1516 // scroll_height
1517 // .min(constraint.max_along(Axis::Vertical))
1518 // .max(constraint.min_along(Axis::Vertical))
1519 // .max(line_height)
1520 // .min(line_height * max_lines as f32),
1521 // )
1522 } else if let EditorMode::SingleLine = editor_mode {
1523 bounds.size.height = line_height.min(bounds.size.height);
1524 }
1525 // todo!()
1526 // else if size.y.is_infinite() {
1527 // // size.set_y(scroll_height);
1528 // }
1529 //
1530 let gutter_size = size(gutter_width, bounds.size.height);
1531 let text_size = size(text_width, bounds.size.height);
1532
1533 let autoscroll_horizontally =
1534 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1535 let mut snapshot = editor.snapshot(cx);
1536
1537 let scroll_position = snapshot.scroll_position();
1538 // The scroll position is a fractional point, the whole number of which represents
1539 // the top of the window in terms of display rows.
1540 let start_row = scroll_position.y as u32;
1541 let height_in_lines = f32::from(bounds.size.height / line_height);
1542 let max_row = snapshot.max_point().row();
1543
1544 // Add 1 to ensure selections bleed off screen
1545 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1546
1547 let start_anchor = if start_row == 0 {
1548 Anchor::min()
1549 } else {
1550 snapshot
1551 .buffer_snapshot
1552 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1553 };
1554 let end_anchor = if end_row > max_row {
1555 Anchor::max()
1556 } else {
1557 snapshot
1558 .buffer_snapshot
1559 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1560 };
1561
1562 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1563 let mut active_rows = BTreeMap::new();
1564 let mut fold_ranges = Vec::new();
1565 let is_singleton = editor.is_singleton(cx);
1566
1567 let highlighted_rows = editor.highlighted_rows();
1568 let highlighted_ranges = editor.background_highlights_in_range(
1569 start_anchor..end_anchor,
1570 &snapshot.display_snapshot,
1571 cx.theme().colors(),
1572 );
1573
1574 fold_ranges.extend(
1575 snapshot
1576 .folds_in_range(start_anchor..end_anchor)
1577 .map(|anchor| {
1578 let start = anchor.start.to_point(&snapshot.buffer_snapshot);
1579 (
1580 start.row,
1581 start.to_display_point(&snapshot.display_snapshot)
1582 ..anchor.end.to_display_point(&snapshot),
1583 )
1584 }),
1585 );
1586
1587 let mut newest_selection_head = None;
1588
1589 if editor.show_local_selections {
1590 let mut local_selections: Vec<Selection<Point>> = editor
1591 .selections
1592 .disjoint_in_range(start_anchor..end_anchor, cx);
1593 local_selections.extend(editor.selections.pending(cx));
1594 let mut layouts = Vec::new();
1595 let newest = editor.selections.newest(cx);
1596 for selection in local_selections.drain(..) {
1597 let is_empty = selection.start == selection.end;
1598 let is_newest = selection == newest;
1599
1600 let layout = SelectionLayout::new(
1601 selection,
1602 editor.selections.line_mode,
1603 editor.cursor_shape,
1604 &snapshot.display_snapshot,
1605 is_newest,
1606 true,
1607 );
1608 if is_newest {
1609 newest_selection_head = Some(layout.head);
1610 }
1611
1612 for row in cmp::max(layout.active_rows.start, start_row)
1613 ..=cmp::min(layout.active_rows.end, end_row)
1614 {
1615 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1616 *contains_non_empty_selection |= !is_empty;
1617 }
1618 layouts.push(layout);
1619 }
1620
1621 selections.push((style.local_player, layouts));
1622 }
1623
1624 if let Some(collaboration_hub) = &editor.collaboration_hub {
1625 // When following someone, render the local selections in their color.
1626 if let Some(leader_id) = editor.leader_peer_id {
1627 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1628 if let Some(participant_index) = collaboration_hub
1629 .user_participant_indices(cx)
1630 .get(&collaborator.user_id)
1631 {
1632 if let Some((local_selection_style, _)) = selections.first_mut() {
1633 *local_selection_style = cx
1634 .theme()
1635 .players()
1636 .color_for_participant(participant_index.0);
1637 }
1638 }
1639 }
1640 }
1641
1642 let mut remote_selections = HashMap::default();
1643 for selection in snapshot.remote_selections_in_range(
1644 &(start_anchor..end_anchor),
1645 collaboration_hub.as_ref(),
1646 cx,
1647 ) {
1648 let selection_style = if let Some(participant_index) = selection.participant_index {
1649 cx.theme()
1650 .players()
1651 .color_for_participant(participant_index.0)
1652 } else {
1653 cx.theme().players().absent()
1654 };
1655
1656 // Don't re-render the leader's selections, since the local selections
1657 // match theirs.
1658 if Some(selection.peer_id) == editor.leader_peer_id {
1659 continue;
1660 }
1661
1662 remote_selections
1663 .entry(selection.replica_id)
1664 .or_insert((selection_style, Vec::new()))
1665 .1
1666 .push(SelectionLayout::new(
1667 selection.selection,
1668 selection.line_mode,
1669 selection.cursor_shape,
1670 &snapshot.display_snapshot,
1671 false,
1672 false,
1673 ));
1674 }
1675
1676 selections.extend(remote_selections.into_values());
1677 }
1678
1679 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1680 let show_scrollbars = match scrollbar_settings.show {
1681 ShowScrollbar::Auto => {
1682 // Git
1683 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1684 ||
1685 // Selections
1686 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1687 // Scrollmanager
1688 || editor.scroll_manager.scrollbars_visible()
1689 }
1690 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1691 ShowScrollbar::Always => true,
1692 ShowScrollbar::Never => false,
1693 };
1694
1695 let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)> = Vec::new();
1696 // todo!()
1697
1698 // fold_ranges
1699 // .into_iter()
1700 // .map(|(id, fold)| {
1701 // // todo!("folds!")
1702 // // let color = self
1703 // // .style
1704 // // .folds
1705 // // .ellipses
1706 // // .background
1707 // // .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
1708 // // .color;
1709
1710 // // (id, fold, color)
1711 // })
1712 // .collect();
1713
1714 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1715 let newest = editor.selections.newest::<Point>(cx);
1716 SelectionLayout::new(
1717 newest,
1718 editor.selections.line_mode,
1719 editor.cursor_shape,
1720 &snapshot.display_snapshot,
1721 true,
1722 true,
1723 )
1724 .head
1725 });
1726
1727 let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
1728 start_row..end_row,
1729 &active_rows,
1730 head_for_relative,
1731 is_singleton,
1732 &snapshot,
1733 cx,
1734 );
1735
1736 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1737
1738 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1739
1740 let mut max_visible_line_width = Pixels::ZERO;
1741 let line_layouts =
1742 self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
1743 for line_with_invisibles in &line_layouts {
1744 if line_with_invisibles.line.width > max_visible_line_width {
1745 max_visible_line_width = line_with_invisibles.line.width;
1746 }
1747 }
1748
1749 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1750 .unwrap()
1751 .width;
1752 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1753
1754 let (scroll_width, blocks) = self.layout_blocks(
1755 start_row..end_row,
1756 &snapshot,
1757 bounds.size.width,
1758 scroll_width,
1759 gutter_padding,
1760 gutter_width,
1761 em_width,
1762 gutter_width + gutter_margin,
1763 line_height,
1764 &style,
1765 &line_layouts,
1766 editor,
1767 cx,
1768 );
1769
1770 let scroll_max = point(
1771 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1772 max_row as f32,
1773 );
1774
1775 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1776
1777 let autoscrolled = if autoscroll_horizontally {
1778 editor.autoscroll_horizontally(
1779 start_row,
1780 text_size.width,
1781 scroll_width,
1782 em_width,
1783 &line_layouts,
1784 cx,
1785 )
1786 } else {
1787 false
1788 };
1789
1790 if clamped || autoscrolled {
1791 snapshot = editor.snapshot(cx);
1792 }
1793
1794 let mut context_menu = None;
1795 let mut code_actions_indicator = None;
1796 if let Some(newest_selection_head) = newest_selection_head {
1797 if (start_row..end_row).contains(&newest_selection_head.row()) {
1798 if editor.context_menu_visible() {
1799 context_menu =
1800 editor.render_context_menu(newest_selection_head, &self.style, cx);
1801 }
1802
1803 let active = matches!(
1804 editor.context_menu.read().as_ref(),
1805 Some(crate::ContextMenu::CodeActions(_))
1806 );
1807
1808 code_actions_indicator = editor
1809 .render_code_actions_indicator(&style, active, cx)
1810 .map(|element| CodeActionsIndicator {
1811 row: newest_selection_head.row(),
1812 element,
1813 });
1814 }
1815 }
1816
1817 let visible_rows = start_row..start_row + line_layouts.len() as u32;
1818 // todo!("hover")
1819 // let mut hover = editor.hover_state.render(
1820 // &snapshot,
1821 // &style,
1822 // visible_rows,
1823 // editor.workspace.as_ref().map(|(w, _)| w.clone()),
1824 // cx,
1825 // );
1826 // let mode = editor.mode;
1827
1828 // todo!("fold_indicators")
1829 // let mut fold_indicators = editor.render_fold_indicators(
1830 // fold_statuses,
1831 // &style,
1832 // editor.gutter_hovered,
1833 // line_height,
1834 // gutter_margin,
1835 // cx,
1836 // );
1837
1838 // todo!("context_menu")
1839 // if let Some((_, context_menu)) = context_menu.as_mut() {
1840 // context_menu.layout(
1841 // SizeConstraint {
1842 // min: gpui::Point::<Pixels>::zero(),
1843 // max: point(
1844 // cx.window_size().x * 0.7,
1845 // (12. * line_height).min((size.y - line_height) / 2.),
1846 // ),
1847 // },
1848 // editor,
1849 // cx,
1850 // );
1851 // }
1852
1853 // todo!("fold indicators")
1854 // for fold_indicator in fold_indicators.iter_mut() {
1855 // if let Some(indicator) = fold_indicator.as_mut() {
1856 // indicator.layout(
1857 // SizeConstraint::strict_along(
1858 // Axis::Vertical,
1859 // line_height * style.code_actions.vertical_scale,
1860 // ),
1861 // editor,
1862 // cx,
1863 // );
1864 // }
1865 // }
1866
1867 // todo!("hover popovers")
1868 // if let Some((_, hover_popovers)) = hover.as_mut() {
1869 // for hover_popover in hover_popovers.iter_mut() {
1870 // hover_popover.layout(
1871 // SizeConstraint {
1872 // min: gpui::Point::<Pixels>::zero(),
1873 // max: point(
1874 // (120. * em_width) // Default size
1875 // .min(size.x / 2.) // Shrink to half of the editor width
1876 // .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1877 // (16. * line_height) // Default size
1878 // .min(size.y / 2.) // Shrink to half of the editor height
1879 // .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1880 // ),
1881 // },
1882 // editor,
1883 // cx,
1884 // );
1885 // }
1886 // }
1887
1888 let invisible_symbol_font_size = font_size / 2.;
1889 let tab_invisible = cx
1890 .text_system()
1891 .layout_text(
1892 "→",
1893 invisible_symbol_font_size,
1894 &[TextRun {
1895 len: "→".len(),
1896 font: self.style.text.font(),
1897 color: cx.theme().colors().editor_invisible,
1898 underline: None,
1899 }],
1900 None,
1901 )
1902 .unwrap()
1903 .pop()
1904 .unwrap();
1905 let space_invisible = cx
1906 .text_system()
1907 .layout_text(
1908 "•",
1909 invisible_symbol_font_size,
1910 &[TextRun {
1911 len: "•".len(),
1912 font: self.style.text.font(),
1913 color: cx.theme().colors().editor_invisible,
1914 underline: None,
1915 }],
1916 None,
1917 )
1918 .unwrap()
1919 .pop()
1920 .unwrap();
1921
1922 LayoutState {
1923 mode: editor_mode,
1924 position_map: Arc::new(PositionMap {
1925 size: bounds.size,
1926 scroll_max,
1927 line_layouts,
1928 line_height,
1929 em_width,
1930 em_advance,
1931 snapshot,
1932 }),
1933 visible_display_row_range: start_row..end_row,
1934 wrap_guides,
1935 gutter_size,
1936 gutter_padding,
1937 text_size,
1938 scrollbar_row_range,
1939 show_scrollbars,
1940 is_singleton,
1941 max_row,
1942 gutter_margin,
1943 active_rows,
1944 highlighted_rows,
1945 highlighted_ranges,
1946 fold_ranges,
1947 line_number_layouts,
1948 display_hunks,
1949 blocks,
1950 selections,
1951 context_menu,
1952 code_actions_indicator,
1953 // fold_indicators,
1954 tab_invisible,
1955 space_invisible,
1956 // hover_popovers: hover,
1957 }
1958 }
1959
1960 #[allow(clippy::too_many_arguments)]
1961 fn layout_blocks(
1962 &mut self,
1963 rows: Range<u32>,
1964 snapshot: &EditorSnapshot,
1965 editor_width: Pixels,
1966 scroll_width: Pixels,
1967 gutter_padding: Pixels,
1968 gutter_width: Pixels,
1969 em_width: Pixels,
1970 text_x: Pixels,
1971 line_height: Pixels,
1972 style: &EditorStyle,
1973 line_layouts: &[LineWithInvisibles],
1974 editor: &mut Editor,
1975 cx: &mut ViewContext<Editor>,
1976 ) -> (Pixels, Vec<BlockLayout>) {
1977 let mut block_id = 0;
1978 let scroll_x = snapshot.scroll_anchor.offset.x;
1979 let (fixed_blocks, non_fixed_blocks) = snapshot
1980 .blocks_in_range(rows.clone())
1981 .partition::<Vec<_>, _>(|(_, block)| match block {
1982 TransformBlock::ExcerptHeader { .. } => false,
1983 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1984 });
1985 let mut render_block = |block: &TransformBlock,
1986 available_space: Size<AvailableSpace>,
1987 block_id: usize,
1988 editor: &mut Editor,
1989 cx: &mut ViewContext<Editor>| {
1990 let mut element = match block {
1991 TransformBlock::Custom(block) => {
1992 let align_to = block
1993 .position()
1994 .to_point(&snapshot.buffer_snapshot)
1995 .to_display_point(snapshot);
1996 let anchor_x = text_x
1997 + if rows.contains(&align_to.row()) {
1998 line_layouts[(align_to.row() - rows.start) as usize]
1999 .line
2000 .x_for_index(align_to.column() as usize)
2001 } else {
2002 layout_line(align_to.row(), snapshot, style, cx)
2003 .unwrap()
2004 .x_for_index(align_to.column() as usize)
2005 };
2006
2007 block.render(&mut BlockContext {
2008 view_context: cx,
2009 anchor_x,
2010 gutter_padding,
2011 line_height,
2012 // scroll_x,
2013 gutter_width,
2014 em_width,
2015 block_id,
2016 })
2017 }
2018 TransformBlock::ExcerptHeader {
2019 id,
2020 buffer,
2021 range,
2022 starts_new_buffer,
2023 ..
2024 } => {
2025 let include_root = editor
2026 .project
2027 .as_ref()
2028 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2029 .unwrap_or_default();
2030 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2031 let jump_path = ProjectPath {
2032 worktree_id: file.worktree_id(cx),
2033 path: file.path.clone(),
2034 };
2035 let jump_anchor = range
2036 .primary
2037 .as_ref()
2038 .map_or(range.context.start, |primary| primary.start);
2039 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2040
2041 // todo!("avoid ElementId collision risk here")
2042 let icon_button_id: usize = id.clone().into();
2043 IconButton::new(icon_button_id, ui::Icon::ArrowUpRight)
2044 .on_click(move |editor: &mut Editor, cx| {
2045 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2046 })
2047 .tooltip("Jump to Buffer") // todo!(pass an action as well to show key binding)
2048 });
2049
2050 let element = if *starts_new_buffer {
2051 let path = buffer.resolve_file_path(cx, include_root);
2052 let mut filename = None;
2053 let mut parent_path = None;
2054 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2055 if let Some(path) = path {
2056 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2057 parent_path =
2058 path.parent().map(|p| p.to_string_lossy().to_string() + "/");
2059 }
2060
2061 h_stack()
2062 .size_full()
2063 .bg(gpui::red())
2064 .child(filename.unwrap_or_else(|| "untitled".to_string()))
2065 .children(parent_path)
2066 .children(jump_icon) // .p_x(gutter_padding)
2067 } else {
2068 let text_style = style.text.clone();
2069 h_stack()
2070 .size_full()
2071 .bg(gpui::red())
2072 .child("⋯")
2073 .children(jump_icon) // .p_x(gutter_padding)
2074 };
2075 element.render()
2076 }
2077 };
2078
2079 let size = element.measure(available_space, editor, cx);
2080 (element, size)
2081 };
2082
2083 let mut fixed_block_max_width = Pixels::ZERO;
2084 let mut blocks = Vec::new();
2085 for (row, block) in fixed_blocks {
2086 let available_space = size(
2087 AvailableSpace::MinContent,
2088 AvailableSpace::Definite(block.height() as f32 * line_height),
2089 );
2090 let (element, element_size) =
2091 render_block(block, available_space, block_id, editor, cx);
2092 block_id += 1;
2093 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2094 blocks.push(BlockLayout {
2095 row,
2096 element,
2097 available_space,
2098 style: BlockStyle::Fixed,
2099 });
2100 }
2101 for (row, block) in non_fixed_blocks {
2102 let style = match block {
2103 TransformBlock::Custom(block) => block.style(),
2104 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2105 };
2106 let width = match style {
2107 BlockStyle::Sticky => editor_width,
2108 BlockStyle::Flex => editor_width
2109 .max(fixed_block_max_width)
2110 .max(gutter_width + scroll_width),
2111 BlockStyle::Fixed => unreachable!(),
2112 };
2113 let available_space = size(
2114 AvailableSpace::Definite(width),
2115 AvailableSpace::Definite(block.height() as f32 * line_height),
2116 );
2117 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2118 block_id += 1;
2119 blocks.push(BlockLayout {
2120 row,
2121 element,
2122 available_space,
2123 style,
2124 });
2125 }
2126 (
2127 scroll_width.max(fixed_block_max_width - gutter_width),
2128 blocks,
2129 )
2130 }
2131
2132 fn paint_mouse_listeners(
2133 &mut self,
2134 bounds: Bounds<Pixels>,
2135 gutter_bounds: Bounds<Pixels>,
2136 text_bounds: Bounds<Pixels>,
2137 position_map: &Arc<PositionMap>,
2138 cx: &mut ViewContext<Editor>,
2139 ) {
2140 cx.on_mouse_event({
2141 let position_map = position_map.clone();
2142 move |editor, event: &ScrollWheelEvent, phase, cx| {
2143 if phase != DispatchPhase::Bubble {
2144 return;
2145 }
2146
2147 if Self::scroll(editor, event, &position_map, bounds, cx) {
2148 cx.stop_propagation();
2149 }
2150 }
2151 });
2152 cx.on_mouse_event({
2153 let position_map = position_map.clone();
2154 move |editor, event: &MouseDownEvent, phase, cx| {
2155 if phase != DispatchPhase::Bubble {
2156 return;
2157 }
2158
2159 if Self::mouse_down(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2160 cx.stop_propagation()
2161 }
2162 }
2163 });
2164 cx.on_mouse_event({
2165 let position_map = position_map.clone();
2166 move |editor, event: &MouseUpEvent, phase, cx| {
2167 if phase != DispatchPhase::Bubble {
2168 return;
2169 }
2170
2171 if Self::mouse_up(editor, event, &position_map, text_bounds, cx) {
2172 cx.stop_propagation()
2173 }
2174 }
2175 });
2176 // todo!()
2177 // on_down(MouseButton::Right, {
2178 // let position_map = position_map.clone();
2179 // move |event, editor, cx| {
2180 // if !Self::mouse_right_down(
2181 // editor,
2182 // event.position,
2183 // position_map.as_ref(),
2184 // text_bounds,
2185 // cx,
2186 // ) {
2187 // cx.propagate_event();
2188 // }
2189 // }
2190 // });
2191 cx.on_mouse_event({
2192 let position_map = position_map.clone();
2193 move |editor, event: &MouseMoveEvent, phase, cx| {
2194 if phase != DispatchPhase::Bubble {
2195 return;
2196 }
2197
2198 if Self::mouse_moved(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2199 cx.stop_propagation()
2200 }
2201 }
2202 });
2203 }
2204}
2205
2206#[derive(Debug)]
2207pub struct LineWithInvisibles {
2208 pub line: Line,
2209 invisibles: Vec<Invisible>,
2210}
2211
2212impl LineWithInvisibles {
2213 fn from_chunks<'a>(
2214 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2215 text_style: &TextStyle,
2216 max_line_len: usize,
2217 max_line_count: usize,
2218 line_number_layouts: &[Option<Line>],
2219 editor_mode: EditorMode,
2220 cx: &WindowContext,
2221 ) -> Vec<Self> {
2222 let mut layouts = Vec::with_capacity(max_line_count);
2223 let mut line = String::new();
2224 let mut invisibles = Vec::new();
2225 let mut styles = Vec::new();
2226 let mut non_whitespace_added = false;
2227 let mut row = 0;
2228 let mut line_exceeded_max_len = false;
2229 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2230
2231 for highlighted_chunk in chunks.chain([HighlightedChunk {
2232 chunk: "\n",
2233 style: None,
2234 is_tab: false,
2235 }]) {
2236 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2237 if ix > 0 {
2238 let layout = cx
2239 .text_system()
2240 .layout_text(&line, font_size, &styles, None);
2241 layouts.push(Self {
2242 line: layout.unwrap().pop().unwrap(),
2243 invisibles: invisibles.drain(..).collect(),
2244 });
2245
2246 line.clear();
2247 styles.clear();
2248 row += 1;
2249 line_exceeded_max_len = false;
2250 non_whitespace_added = false;
2251 if row == max_line_count {
2252 return layouts;
2253 }
2254 }
2255
2256 if !line_chunk.is_empty() && !line_exceeded_max_len {
2257 let text_style = if let Some(style) = highlighted_chunk.style {
2258 text_style
2259 .clone()
2260 .highlight(style)
2261 .map(Cow::Owned)
2262 .unwrap_or_else(|_| Cow::Borrowed(text_style))
2263 } else {
2264 Cow::Borrowed(text_style)
2265 };
2266
2267 if line.len() + line_chunk.len() > max_line_len {
2268 let mut chunk_len = max_line_len - line.len();
2269 while !line_chunk.is_char_boundary(chunk_len) {
2270 chunk_len -= 1;
2271 }
2272 line_chunk = &line_chunk[..chunk_len];
2273 line_exceeded_max_len = true;
2274 }
2275
2276 styles.push(TextRun {
2277 len: line_chunk.len(),
2278 font: text_style.font(),
2279 color: text_style.color,
2280 underline: text_style.underline,
2281 });
2282
2283 if editor_mode == EditorMode::Full {
2284 // Line wrap pads its contents with fake whitespaces,
2285 // avoid printing them
2286 let inside_wrapped_string = line_number_layouts
2287 .get(row)
2288 .and_then(|layout| layout.as_ref())
2289 .is_none();
2290 if highlighted_chunk.is_tab {
2291 if non_whitespace_added || !inside_wrapped_string {
2292 invisibles.push(Invisible::Tab {
2293 line_start_offset: line.len(),
2294 });
2295 }
2296 } else {
2297 invisibles.extend(
2298 line_chunk
2299 .chars()
2300 .enumerate()
2301 .filter(|(_, line_char)| {
2302 let is_whitespace = line_char.is_whitespace();
2303 non_whitespace_added |= !is_whitespace;
2304 is_whitespace
2305 && (non_whitespace_added || !inside_wrapped_string)
2306 })
2307 .map(|(whitespace_index, _)| Invisible::Whitespace {
2308 line_offset: line.len() + whitespace_index,
2309 }),
2310 )
2311 }
2312 }
2313
2314 line.push_str(line_chunk);
2315 }
2316 }
2317 }
2318
2319 layouts
2320 }
2321
2322 fn draw(
2323 &self,
2324 layout: &LayoutState,
2325 row: u32,
2326 scroll_top: Pixels,
2327 content_origin: gpui::Point<Pixels>,
2328 scroll_left: Pixels,
2329 whitespace_setting: ShowWhitespaceSetting,
2330 selection_ranges: &[Range<DisplayPoint>],
2331 cx: &mut ViewContext<Editor>,
2332 ) {
2333 let line_height = layout.position_map.line_height;
2334 let line_y = line_height * row as f32 - scroll_top;
2335
2336 self.line.paint(
2337 content_origin + gpui::point(-scroll_left, line_y),
2338 line_height,
2339 cx,
2340 );
2341
2342 self.draw_invisibles(
2343 &selection_ranges,
2344 layout,
2345 content_origin,
2346 scroll_left,
2347 line_y,
2348 row,
2349 line_height,
2350 whitespace_setting,
2351 cx,
2352 );
2353 }
2354
2355 fn draw_invisibles(
2356 &self,
2357 selection_ranges: &[Range<DisplayPoint>],
2358 layout: &LayoutState,
2359 content_origin: gpui::Point<Pixels>,
2360 scroll_left: Pixels,
2361 line_y: Pixels,
2362 row: u32,
2363 line_height: Pixels,
2364 whitespace_setting: ShowWhitespaceSetting,
2365 cx: &mut ViewContext<Editor>,
2366 ) {
2367 let allowed_invisibles_regions = match whitespace_setting {
2368 ShowWhitespaceSetting::None => return,
2369 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2370 ShowWhitespaceSetting::All => None,
2371 };
2372
2373 for invisible in &self.invisibles {
2374 let (&token_offset, invisible_symbol) = match invisible {
2375 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2376 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2377 };
2378
2379 let x_offset = self.line.x_for_index(token_offset);
2380 let invisible_offset =
2381 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2382 let origin =
2383 content_origin + gpui::point(-scroll_left + x_offset + invisible_offset, line_y);
2384
2385 if let Some(allowed_regions) = allowed_invisibles_regions {
2386 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2387 if !allowed_regions
2388 .iter()
2389 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2390 {
2391 continue;
2392 }
2393 }
2394 invisible_symbol.paint(origin, line_height, cx);
2395 }
2396 }
2397}
2398
2399#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2400enum Invisible {
2401 Tab { line_start_offset: usize },
2402 Whitespace { line_offset: usize },
2403}
2404
2405impl Element<Editor> for EditorElement {
2406 type ElementState = ();
2407
2408 fn id(&self) -> Option<gpui::ElementId> {
2409 None
2410 }
2411
2412 fn initialize(
2413 &mut self,
2414 editor: &mut Editor,
2415 element_state: Option<Self::ElementState>,
2416 cx: &mut gpui::ViewContext<Editor>,
2417 ) -> Self::ElementState {
2418 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2419
2420 let dispatch_context = editor.dispatch_context(cx);
2421 cx.with_element_id(cx.view().entity_id(), |global_id, cx| {
2422 cx.with_key_dispatch(
2423 dispatch_context,
2424 Some(editor.focus_handle.clone()),
2425 |_, cx| {
2426 register_action(cx, Editor::move_left);
2427 register_action(cx, Editor::move_right);
2428 register_action(cx, Editor::move_down);
2429 register_action(cx, Editor::move_up);
2430 // on_action(cx, Editor::new_file); todo!()
2431 // on_action(cx, Editor::new_file_in_direction); todo!()
2432 register_action(cx, Editor::cancel);
2433 register_action(cx, Editor::newline);
2434 register_action(cx, Editor::newline_above);
2435 register_action(cx, Editor::newline_below);
2436 register_action(cx, Editor::backspace);
2437 register_action(cx, Editor::delete);
2438 register_action(cx, Editor::tab);
2439 register_action(cx, Editor::tab_prev);
2440 register_action(cx, Editor::indent);
2441 register_action(cx, Editor::outdent);
2442 register_action(cx, Editor::delete_line);
2443 register_action(cx, Editor::join_lines);
2444 register_action(cx, Editor::sort_lines_case_sensitive);
2445 register_action(cx, Editor::sort_lines_case_insensitive);
2446 register_action(cx, Editor::reverse_lines);
2447 register_action(cx, Editor::shuffle_lines);
2448 register_action(cx, Editor::convert_to_upper_case);
2449 register_action(cx, Editor::convert_to_lower_case);
2450 register_action(cx, Editor::convert_to_title_case);
2451 register_action(cx, Editor::convert_to_snake_case);
2452 register_action(cx, Editor::convert_to_kebab_case);
2453 register_action(cx, Editor::convert_to_upper_camel_case);
2454 register_action(cx, Editor::convert_to_lower_camel_case);
2455 register_action(cx, Editor::delete_to_previous_word_start);
2456 register_action(cx, Editor::delete_to_previous_subword_start);
2457 register_action(cx, Editor::delete_to_next_word_end);
2458 register_action(cx, Editor::delete_to_next_subword_end);
2459 register_action(cx, Editor::delete_to_beginning_of_line);
2460 register_action(cx, Editor::delete_to_end_of_line);
2461 register_action(cx, Editor::cut_to_end_of_line);
2462 register_action(cx, Editor::duplicate_line);
2463 register_action(cx, Editor::move_line_up);
2464 register_action(cx, Editor::move_line_down);
2465 register_action(cx, Editor::transpose);
2466 register_action(cx, Editor::cut);
2467 register_action(cx, Editor::copy);
2468 register_action(cx, Editor::paste);
2469 register_action(cx, Editor::undo);
2470 register_action(cx, Editor::redo);
2471 register_action(cx, Editor::move_page_up);
2472 register_action(cx, Editor::move_page_down);
2473 register_action(cx, Editor::next_screen);
2474 register_action(cx, Editor::scroll_cursor_top);
2475 register_action(cx, Editor::scroll_cursor_center);
2476 register_action(cx, Editor::scroll_cursor_bottom);
2477 register_action(cx, |editor, _: &LineDown, cx| {
2478 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
2479 });
2480 register_action(cx, |editor, _: &LineUp, cx| {
2481 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
2482 });
2483 register_action(cx, |editor, _: &HalfPageDown, cx| {
2484 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
2485 });
2486 register_action(cx, |editor, _: &HalfPageUp, cx| {
2487 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
2488 });
2489 register_action(cx, |editor, _: &PageDown, cx| {
2490 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
2491 });
2492 register_action(cx, |editor, _: &PageUp, cx| {
2493 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
2494 });
2495 register_action(cx, Editor::move_to_previous_word_start);
2496 register_action(cx, Editor::move_to_previous_subword_start);
2497 register_action(cx, Editor::move_to_next_word_end);
2498 register_action(cx, Editor::move_to_next_subword_end);
2499 register_action(cx, Editor::move_to_beginning_of_line);
2500 register_action(cx, Editor::move_to_end_of_line);
2501 register_action(cx, Editor::move_to_start_of_paragraph);
2502 register_action(cx, Editor::move_to_end_of_paragraph);
2503 register_action(cx, Editor::move_to_beginning);
2504 register_action(cx, Editor::move_to_end);
2505 register_action(cx, Editor::select_up);
2506 register_action(cx, Editor::select_down);
2507 register_action(cx, Editor::select_left);
2508 register_action(cx, Editor::select_right);
2509 register_action(cx, Editor::select_to_previous_word_start);
2510 register_action(cx, Editor::select_to_previous_subword_start);
2511 register_action(cx, Editor::select_to_next_word_end);
2512 register_action(cx, Editor::select_to_next_subword_end);
2513 register_action(cx, Editor::select_to_beginning_of_line);
2514 register_action(cx, Editor::select_to_end_of_line);
2515 register_action(cx, Editor::select_to_start_of_paragraph);
2516 register_action(cx, Editor::select_to_end_of_paragraph);
2517 register_action(cx, Editor::select_to_beginning);
2518 register_action(cx, Editor::select_to_end);
2519 register_action(cx, Editor::select_all);
2520 register_action(cx, |editor, action, cx| {
2521 editor.select_all_matches(action, cx).log_err();
2522 });
2523 register_action(cx, Editor::select_line);
2524 register_action(cx, Editor::split_selection_into_lines);
2525 register_action(cx, Editor::add_selection_above);
2526 register_action(cx, Editor::add_selection_below);
2527 register_action(cx, |editor, action, cx| {
2528 editor.select_next(action, cx).log_err();
2529 });
2530 register_action(cx, |editor, action, cx| {
2531 editor.select_previous(action, cx).log_err();
2532 });
2533 register_action(cx, Editor::toggle_comments);
2534 register_action(cx, Editor::select_larger_syntax_node);
2535 register_action(cx, Editor::select_smaller_syntax_node);
2536 register_action(cx, Editor::move_to_enclosing_bracket);
2537 register_action(cx, Editor::undo_selection);
2538 register_action(cx, Editor::redo_selection);
2539 register_action(cx, Editor::go_to_diagnostic);
2540 register_action(cx, Editor::go_to_prev_diagnostic);
2541 register_action(cx, Editor::go_to_hunk);
2542 register_action(cx, Editor::go_to_prev_hunk);
2543 register_action(cx, Editor::go_to_definition);
2544 register_action(cx, Editor::go_to_definition_split);
2545 register_action(cx, Editor::go_to_type_definition);
2546 register_action(cx, Editor::go_to_type_definition_split);
2547 register_action(cx, Editor::fold);
2548 register_action(cx, Editor::fold_at);
2549 register_action(cx, Editor::unfold_lines);
2550 register_action(cx, Editor::unfold_at);
2551 register_action(cx, Editor::fold_selected_ranges);
2552 register_action(cx, Editor::show_completions);
2553 register_action(cx, Editor::toggle_code_actions);
2554 // on_action(cx, Editor::open_excerpts); todo!()
2555 register_action(cx, Editor::toggle_soft_wrap);
2556 register_action(cx, Editor::toggle_inlay_hints);
2557 register_action(cx, Editor::reveal_in_finder);
2558 register_action(cx, Editor::copy_path);
2559 register_action(cx, Editor::copy_relative_path);
2560 register_action(cx, Editor::copy_highlight_json);
2561 register_action(cx, |editor, action, cx| {
2562 editor
2563 .format(action, cx)
2564 .map(|task| task.detach_and_log_err(cx));
2565 });
2566 register_action(cx, Editor::restart_language_server);
2567 register_action(cx, Editor::show_character_palette);
2568 // on_action(cx, Editor::confirm_completion); todo!()
2569 register_action(cx, |editor, action, cx| {
2570 editor
2571 .confirm_code_action(action, cx)
2572 .map(|task| task.detach_and_log_err(cx));
2573 });
2574 // on_action(cx, Editor::rename); todo!()
2575 // on_action(cx, Editor::confirm_rename); todo!()
2576 register_action(cx, |editor, action, cx| {
2577 editor
2578 .find_all_references(action, cx)
2579 .map(|task| task.detach_and_log_err(cx));
2580 });
2581 register_action(cx, Editor::next_copilot_suggestion);
2582 register_action(cx, Editor::previous_copilot_suggestion);
2583 register_action(cx, Editor::copilot_suggest);
2584 register_action(cx, Editor::context_menu_first);
2585 register_action(cx, Editor::context_menu_prev);
2586 register_action(cx, Editor::context_menu_next);
2587 register_action(cx, Editor::context_menu_last);
2588 },
2589 )
2590 });
2591 }
2592
2593 fn layout(
2594 &mut self,
2595 editor: &mut Editor,
2596 element_state: &mut Self::ElementState,
2597 cx: &mut gpui::ViewContext<Editor>,
2598 ) -> gpui::LayoutId {
2599 let rem_size = cx.rem_size();
2600 let mut style = Style::default();
2601 style.size.width = relative(1.).into();
2602 style.size.height = match editor.mode {
2603 EditorMode::SingleLine => self.style.text.line_height_in_pixels(cx.rem_size()).into(),
2604 EditorMode::AutoHeight { .. } => todo!(),
2605 EditorMode::Full => relative(1.).into(),
2606 };
2607 cx.request_layout(&style, None)
2608 }
2609
2610 fn paint(
2611 &mut self,
2612 bounds: Bounds<gpui::Pixels>,
2613 editor: &mut Editor,
2614 element_state: &mut Self::ElementState,
2615 cx: &mut gpui::ViewContext<Editor>,
2616 ) {
2617 let mut layout = self.compute_layout(editor, cx, bounds);
2618 let gutter_bounds = Bounds {
2619 origin: bounds.origin,
2620 size: layout.gutter_size,
2621 };
2622 let text_bounds = Bounds {
2623 origin: gutter_bounds.upper_right(),
2624 size: layout.text_size,
2625 };
2626
2627 // We call with_z_index to establish a new stacking context.
2628 cx.with_z_index(0, |cx| {
2629 cx.with_content_mask(ContentMask { bounds }, |cx| {
2630 self.paint_mouse_listeners(
2631 bounds,
2632 gutter_bounds,
2633 text_bounds,
2634 &layout.position_map,
2635 cx,
2636 );
2637
2638 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2639 if layout.gutter_size.width > Pixels::ZERO {
2640 self.paint_gutter(gutter_bounds, &mut layout, editor, cx);
2641 }
2642
2643 self.paint_text(text_bounds, &mut layout, editor, cx);
2644
2645 if !layout.blocks.is_empty() {
2646 self.paint_blocks(bounds, &mut layout, editor, cx);
2647 }
2648
2649 let input_handler = ElementInputHandler::new(bounds, cx);
2650 cx.handle_input(&editor.focus_handle, input_handler);
2651 });
2652 });
2653 }
2654}
2655
2656// impl EditorElement {
2657// type LayoutState = LayoutState;
2658// type PaintState = ();
2659
2660// fn layout(
2661// &mut self,
2662// constraint: SizeConstraint,
2663// editor: &mut Editor,
2664// cx: &mut ViewContext<Editor>,
2665// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2666// let mut size = constraint.max;
2667// if size.x.is_infinite() {
2668// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2669// }
2670
2671// let snapshot = editor.snapshot(cx);
2672// let style = self.style.clone();
2673
2674// let line_height = (style.text.font_size * style.line_height_scalar).round();
2675
2676// let gutter_padding;
2677// let gutter_width;
2678// let gutter_margin;
2679// if snapshot.show_gutter {
2680// let em_width = style.text.em_width(cx.font_cache());
2681// gutter_padding = (em_width * style.gutter_padding_factor).round();
2682// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2683// gutter_margin = -style.text.descent(cx.font_cache());
2684// } else {
2685// gutter_padding = 0.0;
2686// gutter_width = 0.0;
2687// gutter_margin = 0.0;
2688// };
2689
2690// let text_width = size.x - gutter_width;
2691// let em_width = style.text.em_width(cx.font_cache());
2692// let em_advance = style.text.em_advance(cx.font_cache());
2693// let overscroll = point(em_width, 0.);
2694// let snapshot = {
2695// editor.set_visible_line_count(size.y / line_height, cx);
2696
2697// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2698// let wrap_width = match editor.soft_wrap_mode(cx) {
2699// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2700// SoftWrap::EditorWidth => editor_width,
2701// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2702// };
2703
2704// if editor.set_wrap_width(Some(wrap_width), cx) {
2705// editor.snapshot(cx)
2706// } else {
2707// snapshot
2708// }
2709// };
2710
2711// let wrap_guides = editor
2712// .wrap_guides(cx)
2713// .iter()
2714// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2715// .collect();
2716
2717// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2718// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2719// size.set_y(
2720// scroll_height
2721// .min(constraint.max_along(Axis::Vertical))
2722// .max(constraint.min_along(Axis::Vertical))
2723// .max(line_height)
2724// .min(line_height * max_lines as f32),
2725// )
2726// } else if let EditorMode::SingleLine = snapshot.mode {
2727// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2728// } else if size.y.is_infinite() {
2729// size.set_y(scroll_height);
2730// }
2731// let gutter_size = point(gutter_width, size.y);
2732// let text_size = point(text_width, size.y);
2733
2734// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2735// let mut snapshot = editor.snapshot(cx);
2736
2737// let scroll_position = snapshot.scroll_position();
2738// // The scroll position is a fractional point, the whole number of which represents
2739// // the top of the window in terms of display rows.
2740// let start_row = scroll_position.y as u32;
2741// let height_in_lines = size.y / line_height;
2742// let max_row = snapshot.max_point().row();
2743
2744// // Add 1 to ensure selections bleed off screen
2745// let end_row = 1 + cmp::min(
2746// (scroll_position.y + height_in_lines).ceil() as u32,
2747// max_row,
2748// );
2749
2750// let start_anchor = if start_row == 0 {
2751// Anchor::min()
2752// } else {
2753// snapshot
2754// .buffer_snapshot
2755// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2756// };
2757// let end_anchor = if end_row > max_row {
2758// Anchor::max
2759// } else {
2760// snapshot
2761// .buffer_snapshot
2762// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2763// };
2764
2765// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2766// let mut active_rows = BTreeMap::new();
2767// let mut fold_ranges = Vec::new();
2768// let is_singleton = editor.is_singleton(cx);
2769
2770// let highlighted_rows = editor.highlighted_rows();
2771// let theme = theme::current(cx);
2772// let highlighted_ranges = editor.background_highlights_in_range(
2773// start_anchor..end_anchor,
2774// &snapshot.display_snapshot,
2775// theme.as_ref(),
2776// );
2777
2778// fold_ranges.extend(
2779// snapshot
2780// .folds_in_range(start_anchor..end_anchor)
2781// .map(|anchor| {
2782// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2783// (
2784// start.row,
2785// start.to_display_point(&snapshot.display_snapshot)
2786// ..anchor.end.to_display_point(&snapshot),
2787// )
2788// }),
2789// );
2790
2791// let mut newest_selection_head = None;
2792
2793// if editor.show_local_selections {
2794// let mut local_selections: Vec<Selection<Point>> = editor
2795// .selections
2796// .disjoint_in_range(start_anchor..end_anchor, cx);
2797// local_selections.extend(editor.selections.pending(cx));
2798// let mut layouts = Vec::new();
2799// let newest = editor.selections.newest(cx);
2800// for selection in local_selections.drain(..) {
2801// let is_empty = selection.start == selection.end;
2802// let is_newest = selection == newest;
2803
2804// let layout = SelectionLayout::new(
2805// selection,
2806// editor.selections.line_mode,
2807// editor.cursor_shape,
2808// &snapshot.display_snapshot,
2809// is_newest,
2810// true,
2811// );
2812// if is_newest {
2813// newest_selection_head = Some(layout.head);
2814// }
2815
2816// for row in cmp::max(layout.active_rows.start, start_row)
2817// ..=cmp::min(layout.active_rows.end, end_row)
2818// {
2819// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2820// *contains_non_empty_selection |= !is_empty;
2821// }
2822// layouts.push(layout);
2823// }
2824
2825// selections.push((style.selection, layouts));
2826// }
2827
2828// if let Some(collaboration_hub) = &editor.collaboration_hub {
2829// // When following someone, render the local selections in their color.
2830// if let Some(leader_id) = editor.leader_peer_id {
2831// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2832// if let Some(participant_index) = collaboration_hub
2833// .user_participant_indices(cx)
2834// .get(&collaborator.user_id)
2835// {
2836// if let Some((local_selection_style, _)) = selections.first_mut() {
2837// *local_selection_style =
2838// style.selection_style_for_room_participant(participant_index.0);
2839// }
2840// }
2841// }
2842// }
2843
2844// let mut remote_selections = HashMap::default();
2845// for selection in snapshot.remote_selections_in_range(
2846// &(start_anchor..end_anchor),
2847// collaboration_hub.as_ref(),
2848// cx,
2849// ) {
2850// let selection_style = if let Some(participant_index) = selection.participant_index {
2851// style.selection_style_for_room_participant(participant_index.0)
2852// } else {
2853// style.absent_selection
2854// };
2855
2856// // Don't re-render the leader's selections, since the local selections
2857// // match theirs.
2858// if Some(selection.peer_id) == editor.leader_peer_id {
2859// continue;
2860// }
2861
2862// remote_selections
2863// .entry(selection.replica_id)
2864// .or_insert((selection_style, Vec::new()))
2865// .1
2866// .push(SelectionLayout::new(
2867// selection.selection,
2868// selection.line_mode,
2869// selection.cursor_shape,
2870// &snapshot.display_snapshot,
2871// false,
2872// false,
2873// ));
2874// }
2875
2876// selections.extend(remote_selections.into_values());
2877// }
2878
2879// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2880// let show_scrollbars = match scrollbar_settings.show {
2881// ShowScrollbar::Auto => {
2882// // Git
2883// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2884// ||
2885// // Selections
2886// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2887// // Scrollmanager
2888// || editor.scroll_manager.scrollbars_visible()
2889// }
2890// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2891// ShowScrollbar::Always => true,
2892// ShowScrollbar::Never => false,
2893// };
2894
2895// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2896// .into_iter()
2897// .map(|(id, fold)| {
2898// let color = self
2899// .style
2900// .folds
2901// .ellipses
2902// .background
2903// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2904// .color;
2905
2906// (id, fold, color)
2907// })
2908// .collect();
2909
2910// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2911// let newest = editor.selections.newest::<Point>(cx);
2912// SelectionLayout::new(
2913// newest,
2914// editor.selections.line_mode,
2915// editor.cursor_shape,
2916// &snapshot.display_snapshot,
2917// true,
2918// true,
2919// )
2920// .head
2921// });
2922
2923// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2924// start_row..end_row,
2925// &active_rows,
2926// head_for_relative,
2927// is_singleton,
2928// &snapshot,
2929// cx,
2930// );
2931
2932// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2933
2934// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2935
2936// let mut max_visible_line_width = 0.0;
2937// let line_layouts =
2938// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2939// for line_with_invisibles in &line_layouts {
2940// if line_with_invisibles.line.width() > max_visible_line_width {
2941// max_visible_line_width = line_with_invisibles.line.width();
2942// }
2943// }
2944
2945// let style = self.style.clone();
2946// let longest_line_width = layout_line(
2947// snapshot.longest_row(),
2948// &snapshot,
2949// &style,
2950// cx.text_layout_cache(),
2951// )
2952// .width();
2953// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2954// let em_width = style.text.em_width(cx.font_cache());
2955// let (scroll_width, blocks) = self.layout_blocks(
2956// start_row..end_row,
2957// &snapshot,
2958// size.x,
2959// scroll_width,
2960// gutter_padding,
2961// gutter_width,
2962// em_width,
2963// gutter_width + gutter_margin,
2964// line_height,
2965// &style,
2966// &line_layouts,
2967// editor,
2968// cx,
2969// );
2970
2971// let scroll_max = point(
2972// ((scroll_width - text_size.x) / em_width).max(0.0),
2973// max_row as f32,
2974// );
2975
2976// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2977
2978// let autoscrolled = if autoscroll_horizontally {
2979// editor.autoscroll_horizontally(
2980// start_row,
2981// text_size.x,
2982// scroll_width,
2983// em_width,
2984// &line_layouts,
2985// cx,
2986// )
2987// } else {
2988// false
2989// };
2990
2991// if clamped || autoscrolled {
2992// snapshot = editor.snapshot(cx);
2993// }
2994
2995// let style = editor.style(cx);
2996
2997// let mut context_menu = None;
2998// let mut code_actions_indicator = None;
2999// if let Some(newest_selection_head) = newest_selection_head {
3000// if (start_row..end_row).contains(&newest_selection_head.row()) {
3001// if editor.context_menu_visible() {
3002// context_menu =
3003// editor.render_context_menu(newest_selection_head, style.clone(), cx);
3004// }
3005
3006// let active = matches!(
3007// editor.context_menu.read().as_ref(),
3008// Some(crate::ContextMenu::CodeActions(_))
3009// );
3010
3011// code_actions_indicator = editor
3012// .render_code_actions_indicator(&style, active, cx)
3013// .map(|indicator| (newest_selection_head.row(), indicator));
3014// }
3015// }
3016
3017// let visible_rows = start_row..start_row + line_layouts.len() as u32;
3018// let mut hover = editor.hover_state.render(
3019// &snapshot,
3020// &style,
3021// visible_rows,
3022// editor.workspace.as_ref().map(|(w, _)| w.clone()),
3023// cx,
3024// );
3025// let mode = editor.mode;
3026
3027// let mut fold_indicators = editor.render_fold_indicators(
3028// fold_statuses,
3029// &style,
3030// editor.gutter_hovered,
3031// line_height,
3032// gutter_margin,
3033// cx,
3034// );
3035
3036// if let Some((_, context_menu)) = context_menu.as_mut() {
3037// context_menu.layout(
3038// SizeConstraint {
3039// min: gpui::Point::<Pixels>::zero(),
3040// max: point(
3041// cx.window_size().x * 0.7,
3042// (12. * line_height).min((size.y - line_height) / 2.),
3043// ),
3044// },
3045// editor,
3046// cx,
3047// );
3048// }
3049
3050// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
3051// indicator.layout(
3052// SizeConstraint::strict_along(
3053// Axis::Vertical,
3054// line_height * style.code_actions.vertical_scale,
3055// ),
3056// editor,
3057// cx,
3058// );
3059// }
3060
3061// for fold_indicator in fold_indicators.iter_mut() {
3062// if let Some(indicator) = fold_indicator.as_mut() {
3063// indicator.layout(
3064// SizeConstraint::strict_along(
3065// Axis::Vertical,
3066// line_height * style.code_actions.vertical_scale,
3067// ),
3068// editor,
3069// cx,
3070// );
3071// }
3072// }
3073
3074// if let Some((_, hover_popovers)) = hover.as_mut() {
3075// for hover_popover in hover_popovers.iter_mut() {
3076// hover_popover.layout(
3077// SizeConstraint {
3078// min: gpui::Point::<Pixels>::zero(),
3079// max: point(
3080// (120. * em_width) // Default size
3081// .min(size.x / 2.) // Shrink to half of the editor width
3082// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3083// (16. * line_height) // Default size
3084// .min(size.y / 2.) // Shrink to half of the editor height
3085// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3086// ),
3087// },
3088// editor,
3089// cx,
3090// );
3091// }
3092// }
3093
3094// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
3095// let invisible_symbol_style = RunStyle {
3096// color: self.style.whitespace,
3097// font_id: self.style.text.font_id,
3098// underline: Default::default(),
3099// };
3100
3101// (
3102// size,
3103// LayoutState {
3104// mode,
3105// position_map: Arc::new(PositionMap {
3106// size,
3107// scroll_max,
3108// line_layouts,
3109// line_height,
3110// em_width,
3111// em_advance,
3112// snapshot,
3113// }),
3114// visible_display_row_range: start_row..end_row,
3115// wrap_guides,
3116// gutter_size,
3117// gutter_padding,
3118// text_size,
3119// scrollbar_row_range,
3120// show_scrollbars,
3121// is_singleton,
3122// max_row,
3123// gutter_margin,
3124// active_rows,
3125// highlighted_rows,
3126// highlighted_ranges,
3127// fold_ranges,
3128// line_number_layouts,
3129// display_hunks,
3130// blocks,
3131// selections,
3132// context_menu,
3133// code_actions_indicator,
3134// fold_indicators,
3135// tab_invisible: cx.text_layout_cache().layout_str(
3136// "→",
3137// invisible_symbol_font_size,
3138// &[("→".len(), invisible_symbol_style)],
3139// ),
3140// space_invisible: cx.text_layout_cache().layout_str(
3141// "•",
3142// invisible_symbol_font_size,
3143// &[("•".len(), invisible_symbol_style)],
3144// ),
3145// hover_popovers: hover,
3146// },
3147// )
3148// }
3149
3150// fn paint(
3151// &mut self,
3152// bounds: Bounds<Pixels>,
3153// visible_bounds: Bounds<Pixels>,
3154// layout: &mut Self::LayoutState,
3155// editor: &mut Editor,
3156// cx: &mut ViewContext<Editor>,
3157// ) -> Self::PaintState {
3158// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
3159// cx.scene().push_layer(Some(visible_bounds));
3160
3161// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
3162// let text_bounds = Bounds::<Pixels>::new(
3163// bounds.origin + point(layout.gutter_size.x, 0.0),
3164// layout.text_size,
3165// );
3166
3167// Self::attach_mouse_handlers(
3168// &layout.position_map,
3169// layout.hover_popovers.is_some(),
3170// visible_bounds,
3171// text_bounds,
3172// gutter_bounds,
3173// bounds,
3174// cx,
3175// );
3176
3177// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3178// if layout.gutter_size.x > 0. {
3179// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3180// }
3181// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3182
3183// cx.scene().push_layer(Some(bounds));
3184// if !layout.blocks.is_empty {
3185// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3186// }
3187// self.paint_scrollbar(bounds, layout, &editor, cx);
3188// cx.scene().pop_layer();
3189// cx.scene().pop_layer();
3190// }
3191
3192// fn rect_for_text_range(
3193// &self,
3194// range_utf16: Range<usize>,
3195// bounds: Bounds<Pixels>,
3196// _: Bounds<Pixels>,
3197// layout: &Self::LayoutState,
3198// _: &Self::PaintState,
3199// _: &Editor,
3200// _: &ViewContext<Editor>,
3201// ) -> Option<Bounds<Pixels>> {
3202// let text_bounds = Bounds::<Pixels>::new(
3203// bounds.origin + point(layout.gutter_size.x, 0.0),
3204// layout.text_size,
3205// );
3206// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3207// let scroll_position = layout.position_map.snapshot.scroll_position();
3208// let start_row = scroll_position.y as u32;
3209// let scroll_top = scroll_position.y * layout.position_map.line_height;
3210// let scroll_left = scroll_position.x * layout.position_map.em_width;
3211
3212// let range_start = OffsetUtf16(range_utf16.start)
3213// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3214// if range_start.row() < start_row {
3215// return None;
3216// }
3217
3218// let line = &layout
3219// .position_map
3220// .line_layouts
3221// .get((range_start.row() - start_row) as usize)?
3222// .line;
3223// let range_start_x = line.x_for_index(range_start.column() as usize);
3224// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3225// Some(Bounds::<Pixels>::new(
3226// content_origin
3227// + point(
3228// range_start_x,
3229// range_start_y + layout.position_map.line_height,
3230// )
3231// - point(scroll_left, scroll_top),
3232// point(
3233// layout.position_map.em_width,
3234// layout.position_map.line_height,
3235// ),
3236// ))
3237// }
3238
3239// fn debug(
3240// &self,
3241// bounds: Bounds<Pixels>,
3242// _: &Self::LayoutState,
3243// _: &Self::PaintState,
3244// _: &Editor,
3245// _: &ViewContext<Editor>,
3246// ) -> json::Value {
3247// json!({
3248// "type": "BufferElement",
3249// "bounds": bounds.to_json()
3250// })
3251// }
3252// }
3253
3254type BufferRow = u32;
3255
3256pub struct LayoutState {
3257 position_map: Arc<PositionMap>,
3258 gutter_size: Size<Pixels>,
3259 gutter_padding: Pixels,
3260 gutter_margin: Pixels,
3261 text_size: gpui::Size<Pixels>,
3262 mode: EditorMode,
3263 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3264 visible_display_row_range: Range<u32>,
3265 active_rows: BTreeMap<u32, bool>,
3266 highlighted_rows: Option<Range<u32>>,
3267 line_number_layouts: Vec<Option<gpui::Line>>,
3268 display_hunks: Vec<DisplayDiffHunk>,
3269 blocks: Vec<BlockLayout>,
3270 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3271 fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)>,
3272 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3273 scrollbar_row_range: Range<f32>,
3274 show_scrollbars: bool,
3275 is_singleton: bool,
3276 max_row: u32,
3277 context_menu: Option<(DisplayPoint, AnyElement<Editor>)>,
3278 code_actions_indicator: Option<CodeActionsIndicator>,
3279 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement<Editor>>)>,
3280 // fold_indicators: Vec<Option<AnyElement<Editor>>>,
3281 tab_invisible: Line,
3282 space_invisible: Line,
3283}
3284
3285struct CodeActionsIndicator {
3286 row: u32,
3287 element: AnyElement<Editor>,
3288}
3289
3290struct PositionMap {
3291 size: Size<Pixels>,
3292 line_height: Pixels,
3293 scroll_max: gpui::Point<f32>,
3294 em_width: Pixels,
3295 em_advance: Pixels,
3296 line_layouts: Vec<LineWithInvisibles>,
3297 snapshot: EditorSnapshot,
3298}
3299
3300#[derive(Debug, Copy, Clone)]
3301pub struct PointForPosition {
3302 pub previous_valid: DisplayPoint,
3303 pub next_valid: DisplayPoint,
3304 pub exact_unclipped: DisplayPoint,
3305 pub column_overshoot_after_line_end: u32,
3306}
3307
3308impl PointForPosition {
3309 #[cfg(test)]
3310 pub fn valid(valid: DisplayPoint) -> Self {
3311 Self {
3312 previous_valid: valid,
3313 next_valid: valid,
3314 exact_unclipped: valid,
3315 column_overshoot_after_line_end: 0,
3316 }
3317 }
3318
3319 pub fn as_valid(&self) -> Option<DisplayPoint> {
3320 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3321 Some(self.previous_valid)
3322 } else {
3323 None
3324 }
3325 }
3326}
3327
3328impl PositionMap {
3329 fn point_for_position(
3330 &self,
3331 text_bounds: Bounds<Pixels>,
3332 position: gpui::Point<Pixels>,
3333 ) -> PointForPosition {
3334 let scroll_position = self.snapshot.scroll_position();
3335 let position = position - text_bounds.origin;
3336 let y = position.y.max(px(0.)).min(self.size.width);
3337 let x = position.x + (scroll_position.x * self.em_width);
3338 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3339
3340 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3341 .line_layouts
3342 .get(row as usize - scroll_position.y as usize)
3343 .map(|&LineWithInvisibles { ref line, .. }| line)
3344 {
3345 if let Some(ix) = line.index_for_x(x) {
3346 (ix as u32, px(0.))
3347 } else {
3348 (line.len as u32, px(0.).max(x - line.width))
3349 }
3350 } else {
3351 (0, x)
3352 };
3353
3354 let mut exact_unclipped = DisplayPoint::new(row, column);
3355 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3356 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3357
3358 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3359 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3360 PointForPosition {
3361 previous_valid,
3362 next_valid,
3363 exact_unclipped,
3364 column_overshoot_after_line_end,
3365 }
3366 }
3367}
3368
3369struct BlockLayout {
3370 row: u32,
3371 element: AnyElement<Editor>,
3372 available_space: Size<AvailableSpace>,
3373 style: BlockStyle,
3374}
3375
3376fn layout_line(
3377 row: u32,
3378 snapshot: &EditorSnapshot,
3379 style: &EditorStyle,
3380 cx: &WindowContext,
3381) -> Result<Line> {
3382 let mut line = snapshot.line(row);
3383
3384 if line.len() > MAX_LINE_LEN {
3385 let mut len = MAX_LINE_LEN;
3386 while !line.is_char_boundary(len) {
3387 len -= 1;
3388 }
3389
3390 line.truncate(len);
3391 }
3392
3393 Ok(cx
3394 .text_system()
3395 .layout_text(
3396 &line,
3397 style.text.font_size.to_pixels(cx.rem_size()),
3398 &[TextRun {
3399 len: snapshot.line_len(row) as usize,
3400 font: style.text.font(),
3401 color: Hsla::default(),
3402 underline: None,
3403 }],
3404 None,
3405 )?
3406 .pop()
3407 .unwrap())
3408}
3409
3410#[derive(Debug)]
3411pub struct Cursor {
3412 origin: gpui::Point<Pixels>,
3413 block_width: Pixels,
3414 line_height: Pixels,
3415 color: Hsla,
3416 shape: CursorShape,
3417 block_text: Option<Line>,
3418}
3419
3420impl Cursor {
3421 pub fn new(
3422 origin: gpui::Point<Pixels>,
3423 block_width: Pixels,
3424 line_height: Pixels,
3425 color: Hsla,
3426 shape: CursorShape,
3427 block_text: Option<Line>,
3428 ) -> Cursor {
3429 Cursor {
3430 origin,
3431 block_width,
3432 line_height,
3433 color,
3434 shape,
3435 block_text,
3436 }
3437 }
3438
3439 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3440 Bounds {
3441 origin: self.origin + origin,
3442 size: size(self.block_width, self.line_height),
3443 }
3444 }
3445
3446 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3447 let bounds = match self.shape {
3448 CursorShape::Bar => Bounds {
3449 origin: self.origin + origin,
3450 size: size(px(2.0), self.line_height),
3451 },
3452 CursorShape::Block | CursorShape::Hollow => Bounds {
3453 origin: self.origin + origin,
3454 size: size(self.block_width, self.line_height),
3455 },
3456 CursorShape::Underscore => Bounds {
3457 origin: self.origin
3458 + origin
3459 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3460 size: size(self.block_width, px(2.0)),
3461 },
3462 };
3463
3464 //Draw background or border quad
3465 if matches!(self.shape, CursorShape::Hollow) {
3466 cx.paint_quad(
3467 bounds,
3468 Corners::default(),
3469 transparent_black(),
3470 Edges::all(px(1.)),
3471 self.color,
3472 );
3473 } else {
3474 cx.paint_quad(
3475 bounds,
3476 Corners::default(),
3477 self.color,
3478 Edges::default(),
3479 transparent_black(),
3480 );
3481 }
3482
3483 if let Some(block_text) = &self.block_text {
3484 block_text.paint(self.origin + origin, self.line_height, cx);
3485 }
3486 }
3487
3488 pub fn shape(&self) -> CursorShape {
3489 self.shape
3490 }
3491}
3492
3493#[derive(Debug)]
3494pub struct HighlightedRange {
3495 pub start_y: Pixels,
3496 pub line_height: Pixels,
3497 pub lines: Vec<HighlightedRangeLine>,
3498 pub color: Hsla,
3499 pub corner_radius: Pixels,
3500}
3501
3502#[derive(Debug)]
3503pub struct HighlightedRangeLine {
3504 pub start_x: Pixels,
3505 pub end_x: Pixels,
3506}
3507
3508impl HighlightedRange {
3509 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3510 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3511 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3512 self.paint_lines(
3513 self.start_y + self.line_height,
3514 &self.lines[1..],
3515 bounds,
3516 cx,
3517 );
3518 } else {
3519 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3520 }
3521 }
3522
3523 fn paint_lines(
3524 &self,
3525 start_y: Pixels,
3526 lines: &[HighlightedRangeLine],
3527 bounds: Bounds<Pixels>,
3528 cx: &mut WindowContext,
3529 ) {
3530 if lines.is_empty() {
3531 return;
3532 }
3533
3534 let first_line = lines.first().unwrap();
3535 let last_line = lines.last().unwrap();
3536
3537 let first_top_left = point(first_line.start_x, start_y);
3538 let first_top_right = point(first_line.end_x, start_y);
3539
3540 let curve_height = point(Pixels::ZERO, self.corner_radius);
3541 let curve_width = |start_x: Pixels, end_x: Pixels| {
3542 let max = (end_x - start_x) / 2.;
3543 let width = if max < self.corner_radius {
3544 max
3545 } else {
3546 self.corner_radius
3547 };
3548
3549 point(width, Pixels::ZERO)
3550 };
3551
3552 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3553 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3554 path.curve_to(first_top_right + curve_height, first_top_right);
3555
3556 let mut iter = lines.iter().enumerate().peekable();
3557 while let Some((ix, line)) = iter.next() {
3558 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3559
3560 if let Some((_, next_line)) = iter.peek() {
3561 let next_top_right = point(next_line.end_x, bottom_right.y);
3562
3563 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3564 Ordering::Equal => {
3565 path.line_to(bottom_right);
3566 }
3567 Ordering::Less => {
3568 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3569 path.line_to(bottom_right - curve_height);
3570 if self.corner_radius > Pixels::ZERO {
3571 path.curve_to(bottom_right - curve_width, bottom_right);
3572 }
3573 path.line_to(next_top_right + curve_width);
3574 if self.corner_radius > Pixels::ZERO {
3575 path.curve_to(next_top_right + curve_height, next_top_right);
3576 }
3577 }
3578 Ordering::Greater => {
3579 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3580 path.line_to(bottom_right - curve_height);
3581 if self.corner_radius > Pixels::ZERO {
3582 path.curve_to(bottom_right + curve_width, bottom_right);
3583 }
3584 path.line_to(next_top_right - curve_width);
3585 if self.corner_radius > Pixels::ZERO {
3586 path.curve_to(next_top_right + curve_height, next_top_right);
3587 }
3588 }
3589 }
3590 } else {
3591 let curve_width = curve_width(line.start_x, line.end_x);
3592 path.line_to(bottom_right - curve_height);
3593 if self.corner_radius > Pixels::ZERO {
3594 path.curve_to(bottom_right - curve_width, bottom_right);
3595 }
3596
3597 let bottom_left = point(line.start_x, bottom_right.y);
3598 path.line_to(bottom_left + curve_width);
3599 if self.corner_radius > Pixels::ZERO {
3600 path.curve_to(bottom_left - curve_height, bottom_left);
3601 }
3602 }
3603 }
3604
3605 if first_line.start_x > last_line.start_x {
3606 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3607 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3608 path.line_to(second_top_left + curve_height);
3609 if self.corner_radius > Pixels::ZERO {
3610 path.curve_to(second_top_left + curve_width, second_top_left);
3611 }
3612 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3613 path.line_to(first_bottom_left - curve_width);
3614 if self.corner_radius > Pixels::ZERO {
3615 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3616 }
3617 }
3618
3619 path.line_to(first_top_left + curve_height);
3620 if self.corner_radius > Pixels::ZERO {
3621 path.curve_to(first_top_left + top_curve_width, first_top_left);
3622 }
3623 path.line_to(first_top_right - top_curve_width);
3624
3625 cx.paint_path(path, self.color);
3626 }
3627}
3628
3629// fn range_to_bounds(
3630// range: &Range<DisplayPoint>,
3631// content_origin: gpui::Point<Pixels>,
3632// scroll_left: f32,
3633// scroll_top: f32,
3634// visible_row_range: &Range<u32>,
3635// line_end_overshoot: f32,
3636// position_map: &PositionMap,
3637// ) -> impl Iterator<Item = Bounds<Pixels>> {
3638// let mut bounds: SmallVec<[Bounds<Pixels>; 1]> = SmallVec::new();
3639
3640// if range.start == range.end {
3641// return bounds.into_iter();
3642// }
3643
3644// let start_row = visible_row_range.start;
3645// let end_row = visible_row_range.end;
3646
3647// let row_range = if range.end.column() == 0 {
3648// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3649// } else {
3650// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
3651// };
3652
3653// let first_y =
3654// content_origin.y + row_range.start as f32 * position_map.line_height - scroll_top;
3655
3656// for (idx, row) in row_range.enumerate() {
3657// let line_layout = &position_map.line_layouts[(row - start_row) as usize].line;
3658
3659// let start_x = if row == range.start.row() {
3660// content_origin.x + line_layout.x_for_index(range.start.column() as usize)
3661// - scroll_left
3662// } else {
3663// content_origin.x - scroll_left
3664// };
3665
3666// let end_x = if row == range.end.row() {
3667// content_origin.x + line_layout.x_for_index(range.end.column() as usize) - scroll_left
3668// } else {
3669// content_origin.x + line_layout.width() + line_end_overshoot - scroll_left
3670// };
3671
3672// bounds.push(Bounds::<Pixels>::from_points(
3673// point(start_x, first_y + position_map.line_height * idx as f32),
3674// point(end_x, first_y + position_map.line_height * (idx + 1) as f32),
3675// ))
3676// }
3677
3678// bounds.into_iter()
3679// }
3680
3681pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3682 (delta.pow(1.5) / 100.0).into()
3683}
3684
3685fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3686 (delta.pow(1.2) / 300.0).into()
3687}
3688
3689// #[cfg(test)]
3690// mod tests {
3691// use super::*;
3692// use crate::{
3693// display_map::{BlockDisposition, BlockProperties},
3694// editor_tests::{init_test, update_test_language_settings},
3695// Editor, MultiBuffer,
3696// };
3697// use gpui::TestAppContext;
3698// use language::language_settings;
3699// use log::info;
3700// use std::{num::NonZeroU32, sync::Arc};
3701// use util::test::sample_text;
3702
3703// #[gpui::test]
3704// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3705// init_test(cx, |_| {});
3706// let editor = cx
3707// .add_window(|cx| {
3708// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3709// Editor::new(EditorMode::Full, buffer, None, None, cx)
3710// })
3711// .root(cx);
3712// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3713
3714// let layouts = editor.update(cx, |editor, cx| {
3715// let snapshot = editor.snapshot(cx);
3716// element
3717// .layout_line_numbers(
3718// 0..6,
3719// &Default::default(),
3720// DisplayPoint::new(0, 0),
3721// false,
3722// &snapshot,
3723// cx,
3724// )
3725// .0
3726// });
3727// assert_eq!(layouts.len(), 6);
3728
3729// let relative_rows = editor.update(cx, |editor, cx| {
3730// let snapshot = editor.snapshot(cx);
3731// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3732// });
3733// assert_eq!(relative_rows[&0], 3);
3734// assert_eq!(relative_rows[&1], 2);
3735// assert_eq!(relative_rows[&2], 1);
3736// // current line has no relative number
3737// assert_eq!(relative_rows[&4], 1);
3738// assert_eq!(relative_rows[&5], 2);
3739
3740// // works if cursor is before screen
3741// let relative_rows = editor.update(cx, |editor, cx| {
3742// let snapshot = editor.snapshot(cx);
3743
3744// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3745// });
3746// assert_eq!(relative_rows.len(), 3);
3747// assert_eq!(relative_rows[&3], 2);
3748// assert_eq!(relative_rows[&4], 3);
3749// assert_eq!(relative_rows[&5], 4);
3750
3751// // works if cursor is after screen
3752// let relative_rows = editor.update(cx, |editor, cx| {
3753// let snapshot = editor.snapshot(cx);
3754
3755// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3756// });
3757// assert_eq!(relative_rows.len(), 3);
3758// assert_eq!(relative_rows[&0], 5);
3759// assert_eq!(relative_rows[&1], 4);
3760// assert_eq!(relative_rows[&2], 3);
3761// }
3762
3763// #[gpui::test]
3764// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3765// init_test(cx, |_| {});
3766
3767// let editor = cx
3768// .add_window(|cx| {
3769// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3770// Editor::new(EditorMode::Full, buffer, None, None, cx)
3771// })
3772// .root(cx);
3773// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3774// let (_, state) = editor.update(cx, |editor, cx| {
3775// editor.cursor_shape = CursorShape::Block;
3776// editor.change_selections(None, cx, |s| {
3777// s.select_ranges([
3778// Point::new(0, 0)..Point::new(1, 0),
3779// Point::new(3, 2)..Point::new(3, 3),
3780// Point::new(5, 6)..Point::new(6, 0),
3781// ]);
3782// });
3783// element.layout(
3784// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3785// editor,
3786// cx,
3787// )
3788// });
3789// assert_eq!(state.selections.len(), 1);
3790// let local_selections = &state.selections[0].1;
3791// assert_eq!(local_selections.len(), 3);
3792// // moves cursor back one line
3793// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3794// assert_eq!(
3795// local_selections[0].range,
3796// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3797// );
3798
3799// // moves cursor back one column
3800// assert_eq!(
3801// local_selections[1].range,
3802// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3803// );
3804// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3805
3806// // leaves cursor on the max point
3807// assert_eq!(
3808// local_selections[2].range,
3809// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3810// );
3811// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3812
3813// // active lines does not include 1 (even though the range of the selection does)
3814// assert_eq!(
3815// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3816// vec![0, 3, 5, 6]
3817// );
3818
3819// // multi-buffer support
3820// // in DisplayPoint co-ordinates, this is what we're dealing with:
3821// // 0: [[file
3822// // 1: header]]
3823// // 2: aaaaaa
3824// // 3: bbbbbb
3825// // 4: cccccc
3826// // 5:
3827// // 6: ...
3828// // 7: ffffff
3829// // 8: gggggg
3830// // 9: hhhhhh
3831// // 10:
3832// // 11: [[file
3833// // 12: header]]
3834// // 13: bbbbbb
3835// // 14: cccccc
3836// // 15: dddddd
3837// let editor = cx
3838// .add_window(|cx| {
3839// let buffer = MultiBuffer::build_multi(
3840// [
3841// (
3842// &(sample_text(8, 6, 'a') + "\n"),
3843// vec![
3844// Point::new(0, 0)..Point::new(3, 0),
3845// Point::new(4, 0)..Point::new(7, 0),
3846// ],
3847// ),
3848// (
3849// &(sample_text(8, 6, 'a') + "\n"),
3850// vec![Point::new(1, 0)..Point::new(3, 0)],
3851// ),
3852// ],
3853// cx,
3854// );
3855// Editor::new(EditorMode::Full, buffer, None, None, cx)
3856// })
3857// .root(cx);
3858// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3859// let (_, state) = editor.update(cx, |editor, cx| {
3860// editor.cursor_shape = CursorShape::Block;
3861// editor.change_selections(None, cx, |s| {
3862// s.select_display_ranges([
3863// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3864// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3865// ]);
3866// });
3867// element.layout(
3868// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3869// editor,
3870// cx,
3871// )
3872// });
3873
3874// assert_eq!(state.selections.len(), 1);
3875// let local_selections = &state.selections[0].1;
3876// assert_eq!(local_selections.len(), 2);
3877
3878// // moves cursor on excerpt boundary back a line
3879// // and doesn't allow selection to bleed through
3880// assert_eq!(
3881// local_selections[0].range,
3882// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3883// );
3884// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3885
3886// // moves cursor on buffer boundary back two lines
3887// // and doesn't allow selection to bleed through
3888// assert_eq!(
3889// local_selections[1].range,
3890// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3891// );
3892// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3893// }
3894
3895// #[gpui::test]
3896// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3897// init_test(cx, |_| {});
3898
3899// let editor = cx
3900// .add_window(|cx| {
3901// let buffer = MultiBuffer::build_simple("", cx);
3902// Editor::new(EditorMode::Full, buffer, None, None, cx)
3903// })
3904// .root(cx);
3905
3906// editor.update(cx, |editor, cx| {
3907// editor.set_placeholder_text("hello", cx);
3908// editor.insert_blocks(
3909// [BlockProperties {
3910// style: BlockStyle::Fixed,
3911// disposition: BlockDisposition::Above,
3912// height: 3,
3913// position: Anchor::min(),
3914// render: Arc::new(|_| Empty::new().into_any),
3915// }],
3916// None,
3917// cx,
3918// );
3919
3920// // Blur the editor so that it displays placeholder text.
3921// cx.blur();
3922// });
3923
3924// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3925// let (size, mut state) = editor.update(cx, |editor, cx| {
3926// element.layout(
3927// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3928// editor,
3929// cx,
3930// )
3931// });
3932
3933// assert_eq!(state.position_map.line_layouts.len(), 4);
3934// assert_eq!(
3935// state
3936// .line_number_layouts
3937// .iter()
3938// .map(Option::is_some)
3939// .collect::<Vec<_>>(),
3940// &[false, false, false, true]
3941// );
3942
3943// // Don't panic.
3944// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3945// editor.update(cx, |editor, cx| {
3946// element.paint(bounds, bounds, &mut state, editor, cx);
3947// });
3948// }
3949
3950// #[gpui::test]
3951// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3952// const TAB_SIZE: u32 = 4;
3953
3954// let input_text = "\t \t|\t| a b";
3955// let expected_invisibles = vec![
3956// Invisible::Tab {
3957// line_start_offset: 0,
3958// },
3959// Invisible::Whitespace {
3960// line_offset: TAB_SIZE as usize,
3961// },
3962// Invisible::Tab {
3963// line_start_offset: TAB_SIZE as usize + 1,
3964// },
3965// Invisible::Tab {
3966// line_start_offset: TAB_SIZE as usize * 2 + 1,
3967// },
3968// Invisible::Whitespace {
3969// line_offset: TAB_SIZE as usize * 3 + 1,
3970// },
3971// Invisible::Whitespace {
3972// line_offset: TAB_SIZE as usize * 3 + 3,
3973// },
3974// ];
3975// assert_eq!(
3976// expected_invisibles.len(),
3977// input_text
3978// .chars()
3979// .filter(|initial_char| initial_char.is_whitespace())
3980// .count(),
3981// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3982// );
3983
3984// init_test(cx, |s| {
3985// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3986// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3987// });
3988
3989// let actual_invisibles =
3990// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3991
3992// assert_eq!(expected_invisibles, actual_invisibles);
3993// }
3994
3995// #[gpui::test]
3996// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3997// init_test(cx, |s| {
3998// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3999// s.defaults.tab_size = NonZeroU32::new(4);
4000// });
4001
4002// for editor_mode_without_invisibles in [
4003// EditorMode::SingleLine,
4004// EditorMode::AutoHeight { max_lines: 100 },
4005// ] {
4006// let invisibles = collect_invisibles_from_new_editor(
4007// cx,
4008// editor_mode_without_invisibles,
4009// "\t\t\t| | a b",
4010// 500.0,
4011// );
4012// assert!(invisibles.is_empty,
4013// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4014// }
4015// }
4016
4017// #[gpui::test]
4018// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4019// let tab_size = 4;
4020// let input_text = "a\tbcd ".repeat(9);
4021// let repeated_invisibles = [
4022// Invisible::Tab {
4023// line_start_offset: 1,
4024// },
4025// Invisible::Whitespace {
4026// line_offset: tab_size as usize + 3,
4027// },
4028// Invisible::Whitespace {
4029// line_offset: tab_size as usize + 4,
4030// },
4031// Invisible::Whitespace {
4032// line_offset: tab_size as usize + 5,
4033// },
4034// ];
4035// let expected_invisibles = std::iter::once(repeated_invisibles)
4036// .cycle()
4037// .take(9)
4038// .flatten()
4039// .collect::<Vec<_>>();
4040// assert_eq!(
4041// expected_invisibles.len(),
4042// input_text
4043// .chars()
4044// .filter(|initial_char| initial_char.is_whitespace())
4045// .count(),
4046// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4047// );
4048// info!("Expected invisibles: {expected_invisibles:?}");
4049
4050// init_test(cx, |_| {});
4051
4052// // Put the same string with repeating whitespace pattern into editors of various size,
4053// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4054// let resize_step = 10.0;
4055// let mut editor_width = 200.0;
4056// while editor_width <= 1000.0 {
4057// update_test_language_settings(cx, |s| {
4058// s.defaults.tab_size = NonZeroU32::new(tab_size);
4059// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4060// s.defaults.preferred_line_length = Some(editor_width as u32);
4061// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4062// });
4063
4064// let actual_invisibles =
4065// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
4066
4067// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4068// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4069// let mut i = 0;
4070// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4071// i = actual_index;
4072// match expected_invisibles.get(i) {
4073// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4074// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4075// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4076// _ => {
4077// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4078// }
4079// },
4080// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4081// }
4082// }
4083// let missing_expected_invisibles = &expected_invisibles[i + 1..];
4084// assert!(
4085// missing_expected_invisibles.is_empty,
4086// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4087// );
4088
4089// editor_width += resize_step;
4090// }
4091// }
4092
4093// fn collect_invisibles_from_new_editor(
4094// cx: &mut TestAppContext,
4095// editor_mode: EditorMode,
4096// input_text: &str,
4097// editor_width: f32,
4098// ) -> Vec<Invisible> {
4099// info!(
4100// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
4101// );
4102// let editor = cx
4103// .add_window(|cx| {
4104// let buffer = MultiBuffer::build_simple(&input_text, cx);
4105// Editor::new(editor_mode, buffer, None, None, cx)
4106// })
4107// .root(cx);
4108
4109// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
4110// let (_, layout_state) = editor.update(cx, |editor, cx| {
4111// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4112// editor.set_wrap_width(Some(editor_width), cx);
4113
4114// element.layout(
4115// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
4116// editor,
4117// cx,
4118// )
4119// });
4120
4121// layout_state
4122// .position_map
4123// .line_layouts
4124// .iter()
4125// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
4126// .flatten()
4127// .cloned()
4128// .collect()
4129// }
4130// }
4131
4132fn register_action<T: Action>(
4133 cx: &mut ViewContext<Editor>,
4134 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4135) {
4136 cx.on_action(TypeId::of::<T>(), move |editor, action, phase, cx| {
4137 let action = action.downcast_ref().unwrap();
4138 if phase == DispatchPhase::Bubble {
4139 listener(editor, action, cx);
4140 }
4141 })
4142}