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, ParentComponent, Pixels, ScrollWheelEvent, Size, Style, Styled, TextRun,
25 TextStyle, 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(Some(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 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1452 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1453 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1454 let em_width = cx
1455 .text_system()
1456 .typographic_bounds(font_id, font_size, 'm')
1457 .unwrap()
1458 .size
1459 .width;
1460 let em_advance = cx
1461 .text_system()
1462 .advance(font_id, font_size, 'm')
1463 .unwrap()
1464 .width;
1465
1466 let gutter_padding;
1467 let gutter_width;
1468 let gutter_margin;
1469 if snapshot.show_gutter {
1470 let descent = cx.text_system().descent(font_id, font_size).unwrap();
1471
1472 let gutter_padding_factor = 3.5;
1473 gutter_padding = (em_width * gutter_padding_factor).round();
1474 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1475 gutter_margin = -descent;
1476 } else {
1477 gutter_padding = Pixels::ZERO;
1478 gutter_width = Pixels::ZERO;
1479 gutter_margin = Pixels::ZERO;
1480 };
1481
1482 editor.gutter_width = gutter_width;
1483 let text_width = bounds.size.width - gutter_width;
1484 let overscroll = size(em_width, px(0.));
1485 let snapshot = {
1486 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1487
1488 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1489 let wrap_width = match editor.soft_wrap_mode(cx) {
1490 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1491 SoftWrap::EditorWidth => editor_width,
1492 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1493 };
1494
1495 if editor.set_wrap_width(Some(wrap_width), cx) {
1496 editor.snapshot(cx)
1497 } else {
1498 snapshot
1499 }
1500 };
1501
1502 let wrap_guides = editor
1503 .wrap_guides(cx)
1504 .iter()
1505 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1506 .collect::<SmallVec<[_; 2]>>();
1507
1508 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1509 // todo!("this should happen during layout")
1510 let editor_mode = snapshot.mode;
1511 if let EditorMode::AutoHeight { max_lines } = editor_mode {
1512 todo!()
1513 // size.set_y(
1514 // scroll_height
1515 // .min(constraint.max_along(Axis::Vertical))
1516 // .max(constraint.min_along(Axis::Vertical))
1517 // .max(line_height)
1518 // .min(line_height * max_lines as f32),
1519 // )
1520 } else if let EditorMode::SingleLine = editor_mode {
1521 bounds.size.height = line_height.min(bounds.size.height);
1522 }
1523 // todo!()
1524 // else if size.y.is_infinite() {
1525 // // size.set_y(scroll_height);
1526 // }
1527 //
1528 let gutter_size = size(gutter_width, bounds.size.height);
1529 let text_size = size(text_width, bounds.size.height);
1530
1531 let autoscroll_horizontally =
1532 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1533 let mut snapshot = editor.snapshot(cx);
1534
1535 let scroll_position = snapshot.scroll_position();
1536 // The scroll position is a fractional point, the whole number of which represents
1537 // the top of the window in terms of display rows.
1538 let start_row = scroll_position.y as u32;
1539 let height_in_lines = f32::from(bounds.size.height / line_height);
1540 let max_row = snapshot.max_point().row();
1541
1542 // Add 1 to ensure selections bleed off screen
1543 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1544
1545 let start_anchor = if start_row == 0 {
1546 Anchor::min()
1547 } else {
1548 snapshot
1549 .buffer_snapshot
1550 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1551 };
1552 let end_anchor = if end_row > max_row {
1553 Anchor::max()
1554 } else {
1555 snapshot
1556 .buffer_snapshot
1557 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1558 };
1559
1560 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1561 let mut active_rows = BTreeMap::new();
1562 let mut fold_ranges = Vec::new();
1563 let is_singleton = editor.is_singleton(cx);
1564
1565 let highlighted_rows = editor.highlighted_rows();
1566 let highlighted_ranges = editor.background_highlights_in_range(
1567 start_anchor..end_anchor,
1568 &snapshot.display_snapshot,
1569 cx.theme().colors(),
1570 );
1571
1572 fold_ranges.extend(
1573 snapshot
1574 .folds_in_range(start_anchor..end_anchor)
1575 .map(|anchor| {
1576 let start = anchor.start.to_point(&snapshot.buffer_snapshot);
1577 (
1578 start.row,
1579 start.to_display_point(&snapshot.display_snapshot)
1580 ..anchor.end.to_display_point(&snapshot),
1581 )
1582 }),
1583 );
1584
1585 let mut newest_selection_head = None;
1586
1587 if editor.show_local_selections {
1588 let mut local_selections: Vec<Selection<Point>> = editor
1589 .selections
1590 .disjoint_in_range(start_anchor..end_anchor, cx);
1591 local_selections.extend(editor.selections.pending(cx));
1592 let mut layouts = Vec::new();
1593 let newest = editor.selections.newest(cx);
1594 for selection in local_selections.drain(..) {
1595 let is_empty = selection.start == selection.end;
1596 let is_newest = selection == newest;
1597
1598 let layout = SelectionLayout::new(
1599 selection,
1600 editor.selections.line_mode,
1601 editor.cursor_shape,
1602 &snapshot.display_snapshot,
1603 is_newest,
1604 true,
1605 );
1606 if is_newest {
1607 newest_selection_head = Some(layout.head);
1608 }
1609
1610 for row in cmp::max(layout.active_rows.start, start_row)
1611 ..=cmp::min(layout.active_rows.end, end_row)
1612 {
1613 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1614 *contains_non_empty_selection |= !is_empty;
1615 }
1616 layouts.push(layout);
1617 }
1618
1619 selections.push((style.local_player, layouts));
1620 }
1621
1622 if let Some(collaboration_hub) = &editor.collaboration_hub {
1623 // When following someone, render the local selections in their color.
1624 if let Some(leader_id) = editor.leader_peer_id {
1625 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1626 if let Some(participant_index) = collaboration_hub
1627 .user_participant_indices(cx)
1628 .get(&collaborator.user_id)
1629 {
1630 if let Some((local_selection_style, _)) = selections.first_mut() {
1631 *local_selection_style = cx
1632 .theme()
1633 .players()
1634 .color_for_participant(participant_index.0);
1635 }
1636 }
1637 }
1638 }
1639
1640 let mut remote_selections = HashMap::default();
1641 for selection in snapshot.remote_selections_in_range(
1642 &(start_anchor..end_anchor),
1643 collaboration_hub.as_ref(),
1644 cx,
1645 ) {
1646 let selection_style = if let Some(participant_index) = selection.participant_index {
1647 cx.theme()
1648 .players()
1649 .color_for_participant(participant_index.0)
1650 } else {
1651 cx.theme().players().absent()
1652 };
1653
1654 // Don't re-render the leader's selections, since the local selections
1655 // match theirs.
1656 if Some(selection.peer_id) == editor.leader_peer_id {
1657 continue;
1658 }
1659
1660 remote_selections
1661 .entry(selection.replica_id)
1662 .or_insert((selection_style, Vec::new()))
1663 .1
1664 .push(SelectionLayout::new(
1665 selection.selection,
1666 selection.line_mode,
1667 selection.cursor_shape,
1668 &snapshot.display_snapshot,
1669 false,
1670 false,
1671 ));
1672 }
1673
1674 selections.extend(remote_selections.into_values());
1675 }
1676
1677 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1678 let show_scrollbars = match scrollbar_settings.show {
1679 ShowScrollbar::Auto => {
1680 // Git
1681 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1682 ||
1683 // Selections
1684 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1685 // Scrollmanager
1686 || editor.scroll_manager.scrollbars_visible()
1687 }
1688 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1689 ShowScrollbar::Always => true,
1690 ShowScrollbar::Never => false,
1691 };
1692
1693 let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)> = Vec::new();
1694 // todo!()
1695
1696 // fold_ranges
1697 // .into_iter()
1698 // .map(|(id, fold)| {
1699 // // todo!("folds!")
1700 // // let color = self
1701 // // .style
1702 // // .folds
1703 // // .ellipses
1704 // // .background
1705 // // .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
1706 // // .color;
1707
1708 // // (id, fold, color)
1709 // })
1710 // .collect();
1711
1712 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1713 let newest = editor.selections.newest::<Point>(cx);
1714 SelectionLayout::new(
1715 newest,
1716 editor.selections.line_mode,
1717 editor.cursor_shape,
1718 &snapshot.display_snapshot,
1719 true,
1720 true,
1721 )
1722 .head
1723 });
1724
1725 let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
1726 start_row..end_row,
1727 &active_rows,
1728 head_for_relative,
1729 is_singleton,
1730 &snapshot,
1731 cx,
1732 );
1733
1734 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1735
1736 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1737
1738 let mut max_visible_line_width = Pixels::ZERO;
1739 let line_layouts =
1740 self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
1741 for line_with_invisibles in &line_layouts {
1742 if line_with_invisibles.line.width > max_visible_line_width {
1743 max_visible_line_width = line_with_invisibles.line.width;
1744 }
1745 }
1746
1747 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1748 .unwrap()
1749 .width;
1750 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1751
1752 let (scroll_width, blocks) = self.layout_blocks(
1753 start_row..end_row,
1754 &snapshot,
1755 bounds.size.width,
1756 scroll_width,
1757 gutter_padding,
1758 gutter_width,
1759 em_width,
1760 gutter_width + gutter_margin,
1761 line_height,
1762 &style,
1763 &line_layouts,
1764 editor,
1765 cx,
1766 );
1767
1768 let scroll_max = point(
1769 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1770 max_row as f32,
1771 );
1772
1773 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1774
1775 let autoscrolled = if autoscroll_horizontally {
1776 editor.autoscroll_horizontally(
1777 start_row,
1778 text_size.width,
1779 scroll_width,
1780 em_width,
1781 &line_layouts,
1782 cx,
1783 )
1784 } else {
1785 false
1786 };
1787
1788 if clamped || autoscrolled {
1789 snapshot = editor.snapshot(cx);
1790 }
1791
1792 let mut context_menu = None;
1793 let mut code_actions_indicator = None;
1794 if let Some(newest_selection_head) = newest_selection_head {
1795 if (start_row..end_row).contains(&newest_selection_head.row()) {
1796 if editor.context_menu_visible() {
1797 context_menu =
1798 editor.render_context_menu(newest_selection_head, &self.style, cx);
1799 }
1800
1801 let active = matches!(
1802 editor.context_menu.read().as_ref(),
1803 Some(crate::ContextMenu::CodeActions(_))
1804 );
1805
1806 code_actions_indicator = editor
1807 .render_code_actions_indicator(&style, active, cx)
1808 .map(|element| CodeActionsIndicator {
1809 row: newest_selection_head.row(),
1810 element,
1811 });
1812 }
1813 }
1814
1815 let visible_rows = start_row..start_row + line_layouts.len() as u32;
1816 // todo!("hover")
1817 // let mut hover = editor.hover_state.render(
1818 // &snapshot,
1819 // &style,
1820 // visible_rows,
1821 // editor.workspace.as_ref().map(|(w, _)| w.clone()),
1822 // cx,
1823 // );
1824 // let mode = editor.mode;
1825
1826 // todo!("fold_indicators")
1827 // let mut fold_indicators = editor.render_fold_indicators(
1828 // fold_statuses,
1829 // &style,
1830 // editor.gutter_hovered,
1831 // line_height,
1832 // gutter_margin,
1833 // cx,
1834 // );
1835
1836 // todo!("context_menu")
1837 // if let Some((_, context_menu)) = context_menu.as_mut() {
1838 // context_menu.layout(
1839 // SizeConstraint {
1840 // min: gpui::Point::<Pixels>::zero(),
1841 // max: point(
1842 // cx.window_size().x * 0.7,
1843 // (12. * line_height).min((size.y - line_height) / 2.),
1844 // ),
1845 // },
1846 // editor,
1847 // cx,
1848 // );
1849 // }
1850
1851 // todo!("fold indicators")
1852 // for fold_indicator in fold_indicators.iter_mut() {
1853 // if let Some(indicator) = fold_indicator.as_mut() {
1854 // indicator.layout(
1855 // SizeConstraint::strict_along(
1856 // Axis::Vertical,
1857 // line_height * style.code_actions.vertical_scale,
1858 // ),
1859 // editor,
1860 // cx,
1861 // );
1862 // }
1863 // }
1864
1865 // todo!("hover popovers")
1866 // if let Some((_, hover_popovers)) = hover.as_mut() {
1867 // for hover_popover in hover_popovers.iter_mut() {
1868 // hover_popover.layout(
1869 // SizeConstraint {
1870 // min: gpui::Point::<Pixels>::zero(),
1871 // max: point(
1872 // (120. * em_width) // Default size
1873 // .min(size.x / 2.) // Shrink to half of the editor width
1874 // .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1875 // (16. * line_height) // Default size
1876 // .min(size.y / 2.) // Shrink to half of the editor height
1877 // .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1878 // ),
1879 // },
1880 // editor,
1881 // cx,
1882 // );
1883 // }
1884 // }
1885
1886 let invisible_symbol_font_size = font_size / 2.;
1887 let tab_invisible = cx
1888 .text_system()
1889 .layout_text(
1890 "→",
1891 invisible_symbol_font_size,
1892 &[TextRun {
1893 len: "→".len(),
1894 font: self.style.text.font(),
1895 color: cx.theme().colors().editor_invisible,
1896 underline: None,
1897 }],
1898 None,
1899 )
1900 .unwrap()
1901 .pop()
1902 .unwrap();
1903 let space_invisible = cx
1904 .text_system()
1905 .layout_text(
1906 "•",
1907 invisible_symbol_font_size,
1908 &[TextRun {
1909 len: "•".len(),
1910 font: self.style.text.font(),
1911 color: cx.theme().colors().editor_invisible,
1912 underline: None,
1913 }],
1914 None,
1915 )
1916 .unwrap()
1917 .pop()
1918 .unwrap();
1919
1920 LayoutState {
1921 mode: editor_mode,
1922 position_map: Arc::new(PositionMap {
1923 size: bounds.size,
1924 scroll_max,
1925 line_layouts,
1926 line_height,
1927 em_width,
1928 em_advance,
1929 snapshot,
1930 }),
1931 visible_display_row_range: start_row..end_row,
1932 wrap_guides,
1933 gutter_size,
1934 gutter_padding,
1935 text_size,
1936 scrollbar_row_range,
1937 show_scrollbars,
1938 is_singleton,
1939 max_row,
1940 gutter_margin,
1941 active_rows,
1942 highlighted_rows,
1943 highlighted_ranges,
1944 fold_ranges,
1945 line_number_layouts,
1946 display_hunks,
1947 blocks,
1948 selections,
1949 context_menu,
1950 code_actions_indicator,
1951 // fold_indicators,
1952 tab_invisible,
1953 space_invisible,
1954 // hover_popovers: hover,
1955 }
1956 }
1957
1958 #[allow(clippy::too_many_arguments)]
1959 fn layout_blocks(
1960 &mut self,
1961 rows: Range<u32>,
1962 snapshot: &EditorSnapshot,
1963 editor_width: Pixels,
1964 scroll_width: Pixels,
1965 gutter_padding: Pixels,
1966 gutter_width: Pixels,
1967 em_width: Pixels,
1968 text_x: Pixels,
1969 line_height: Pixels,
1970 style: &EditorStyle,
1971 line_layouts: &[LineWithInvisibles],
1972 editor: &mut Editor,
1973 cx: &mut ViewContext<Editor>,
1974 ) -> (Pixels, Vec<BlockLayout>) {
1975 let mut block_id = 0;
1976 let scroll_x = snapshot.scroll_anchor.offset.x;
1977 let (fixed_blocks, non_fixed_blocks) = snapshot
1978 .blocks_in_range(rows.clone())
1979 .partition::<Vec<_>, _>(|(_, block)| match block {
1980 TransformBlock::ExcerptHeader { .. } => false,
1981 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1982 });
1983 let mut render_block = |block: &TransformBlock,
1984 available_space: Size<AvailableSpace>,
1985 block_id: usize,
1986 editor: &mut Editor,
1987 cx: &mut ViewContext<Editor>| {
1988 let mut element = match block {
1989 TransformBlock::Custom(block) => {
1990 let align_to = block
1991 .position()
1992 .to_point(&snapshot.buffer_snapshot)
1993 .to_display_point(snapshot);
1994 let anchor_x = text_x
1995 + if rows.contains(&align_to.row()) {
1996 line_layouts[(align_to.row() - rows.start) as usize]
1997 .line
1998 .x_for_index(align_to.column() as usize)
1999 } else {
2000 layout_line(align_to.row(), snapshot, style, cx)
2001 .unwrap()
2002 .x_for_index(align_to.column() as usize)
2003 };
2004
2005 block.render(&mut BlockContext {
2006 view_context: cx,
2007 anchor_x,
2008 gutter_padding,
2009 line_height,
2010 // scroll_x,
2011 gutter_width,
2012 em_width,
2013 block_id,
2014 })
2015 }
2016 TransformBlock::ExcerptHeader {
2017 id,
2018 buffer,
2019 range,
2020 starts_new_buffer,
2021 ..
2022 } => {
2023 let include_root = editor
2024 .project
2025 .as_ref()
2026 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2027 .unwrap_or_default();
2028 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2029 let jump_path = ProjectPath {
2030 worktree_id: file.worktree_id(cx),
2031 path: file.path.clone(),
2032 };
2033 let jump_anchor = range
2034 .primary
2035 .as_ref()
2036 .map_or(range.context.start, |primary| primary.start);
2037 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2038
2039 // todo!("avoid ElementId collision risk here")
2040 let icon_button_id: usize = id.clone().into();
2041 IconButton::new(icon_button_id, ui::Icon::ArrowUpRight)
2042 .on_click(move |editor: &mut Editor, cx| {
2043 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2044 })
2045 .tooltip("Jump to Buffer") // todo!(pass an action as well to show key binding)
2046 });
2047
2048 let element = if *starts_new_buffer {
2049 let path = buffer.resolve_file_path(cx, include_root);
2050 let mut filename = None;
2051 let mut parent_path = None;
2052 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2053 if let Some(path) = path {
2054 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2055 parent_path =
2056 path.parent().map(|p| p.to_string_lossy().to_string() + "/");
2057 }
2058
2059 h_stack()
2060 .size_full()
2061 .bg(gpui::red())
2062 .child(filename.unwrap_or_else(|| "untitled".to_string()))
2063 .children(parent_path)
2064 .children(jump_icon) // .p_x(gutter_padding)
2065 } else {
2066 let text_style = style.text.clone();
2067 h_stack()
2068 .size_full()
2069 .bg(gpui::red())
2070 .child("⋯")
2071 .children(jump_icon) // .p_x(gutter_padding)
2072 };
2073 element.render()
2074 }
2075 };
2076
2077 let size = element.measure(available_space, editor, cx);
2078 (element, size)
2079 };
2080
2081 let mut fixed_block_max_width = Pixels::ZERO;
2082 let mut blocks = Vec::new();
2083 for (row, block) in fixed_blocks {
2084 let available_space = size(
2085 AvailableSpace::MinContent,
2086 AvailableSpace::Definite(block.height() as f32 * line_height),
2087 );
2088 let (element, element_size) =
2089 render_block(block, available_space, block_id, editor, cx);
2090 block_id += 1;
2091 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2092 blocks.push(BlockLayout {
2093 row,
2094 element,
2095 available_space,
2096 style: BlockStyle::Fixed,
2097 });
2098 }
2099 for (row, block) in non_fixed_blocks {
2100 let style = match block {
2101 TransformBlock::Custom(block) => block.style(),
2102 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2103 };
2104 let width = match style {
2105 BlockStyle::Sticky => editor_width,
2106 BlockStyle::Flex => editor_width
2107 .max(fixed_block_max_width)
2108 .max(gutter_width + scroll_width),
2109 BlockStyle::Fixed => unreachable!(),
2110 };
2111 let available_space = size(
2112 AvailableSpace::Definite(width),
2113 AvailableSpace::Definite(block.height() as f32 * line_height),
2114 );
2115 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2116 block_id += 1;
2117 blocks.push(BlockLayout {
2118 row,
2119 element,
2120 available_space,
2121 style,
2122 });
2123 }
2124 (
2125 scroll_width.max(fixed_block_max_width - gutter_width),
2126 blocks,
2127 )
2128 }
2129
2130 fn paint_mouse_listeners(
2131 &mut self,
2132 bounds: Bounds<Pixels>,
2133 gutter_bounds: Bounds<Pixels>,
2134 text_bounds: Bounds<Pixels>,
2135 position_map: &Arc<PositionMap>,
2136 cx: &mut ViewContext<Editor>,
2137 ) {
2138 cx.on_mouse_event({
2139 let position_map = position_map.clone();
2140 move |editor, event: &ScrollWheelEvent, phase, cx| {
2141 if phase != DispatchPhase::Bubble {
2142 return;
2143 }
2144
2145 if Self::scroll(editor, event, &position_map, bounds, cx) {
2146 cx.stop_propagation();
2147 }
2148 }
2149 });
2150 cx.on_mouse_event({
2151 let position_map = position_map.clone();
2152 move |editor, event: &MouseDownEvent, phase, cx| {
2153 if phase != DispatchPhase::Bubble {
2154 return;
2155 }
2156
2157 if Self::mouse_down(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2158 cx.stop_propagation()
2159 }
2160 }
2161 });
2162 cx.on_mouse_event({
2163 let position_map = position_map.clone();
2164 move |editor, event: &MouseUpEvent, phase, cx| {
2165 if phase != DispatchPhase::Bubble {
2166 return;
2167 }
2168
2169 if Self::mouse_up(editor, event, &position_map, text_bounds, cx) {
2170 cx.stop_propagation()
2171 }
2172 }
2173 });
2174 // todo!()
2175 // on_down(MouseButton::Right, {
2176 // let position_map = position_map.clone();
2177 // move |event, editor, cx| {
2178 // if !Self::mouse_right_down(
2179 // editor,
2180 // event.position,
2181 // position_map.as_ref(),
2182 // text_bounds,
2183 // cx,
2184 // ) {
2185 // cx.propagate_event();
2186 // }
2187 // }
2188 // });
2189 cx.on_mouse_event({
2190 let position_map = position_map.clone();
2191 move |editor, event: &MouseMoveEvent, phase, cx| {
2192 if phase != DispatchPhase::Bubble {
2193 return;
2194 }
2195
2196 if Self::mouse_moved(editor, event, &position_map, text_bounds, gutter_bounds, cx) {
2197 cx.stop_propagation()
2198 }
2199 }
2200 });
2201 }
2202}
2203
2204#[derive(Debug)]
2205pub struct LineWithInvisibles {
2206 pub line: Line,
2207 invisibles: Vec<Invisible>,
2208}
2209
2210impl LineWithInvisibles {
2211 fn from_chunks<'a>(
2212 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2213 text_style: &TextStyle,
2214 max_line_len: usize,
2215 max_line_count: usize,
2216 line_number_layouts: &[Option<Line>],
2217 editor_mode: EditorMode,
2218 cx: &WindowContext,
2219 ) -> Vec<Self> {
2220 let mut layouts = Vec::with_capacity(max_line_count);
2221 let mut line = String::new();
2222 let mut invisibles = Vec::new();
2223 let mut styles = Vec::new();
2224 let mut non_whitespace_added = false;
2225 let mut row = 0;
2226 let mut line_exceeded_max_len = false;
2227 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2228
2229 for highlighted_chunk in chunks.chain([HighlightedChunk {
2230 chunk: "\n",
2231 style: None,
2232 is_tab: false,
2233 }]) {
2234 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2235 if ix > 0 {
2236 let layout = cx
2237 .text_system()
2238 .layout_text(&line, font_size, &styles, None);
2239 layouts.push(Self {
2240 line: layout.unwrap().pop().unwrap(),
2241 invisibles: invisibles.drain(..).collect(),
2242 });
2243
2244 line.clear();
2245 styles.clear();
2246 row += 1;
2247 line_exceeded_max_len = false;
2248 non_whitespace_added = false;
2249 if row == max_line_count {
2250 return layouts;
2251 }
2252 }
2253
2254 if !line_chunk.is_empty() && !line_exceeded_max_len {
2255 let text_style = if let Some(style) = highlighted_chunk.style {
2256 text_style
2257 .clone()
2258 .highlight(style)
2259 .map(Cow::Owned)
2260 .unwrap_or_else(|_| Cow::Borrowed(text_style))
2261 } else {
2262 Cow::Borrowed(text_style)
2263 };
2264
2265 if line.len() + line_chunk.len() > max_line_len {
2266 let mut chunk_len = max_line_len - line.len();
2267 while !line_chunk.is_char_boundary(chunk_len) {
2268 chunk_len -= 1;
2269 }
2270 line_chunk = &line_chunk[..chunk_len];
2271 line_exceeded_max_len = true;
2272 }
2273
2274 styles.push(TextRun {
2275 len: line_chunk.len(),
2276 font: text_style.font(),
2277 color: text_style.color,
2278 underline: text_style.underline,
2279 });
2280
2281 if editor_mode == EditorMode::Full {
2282 // Line wrap pads its contents with fake whitespaces,
2283 // avoid printing them
2284 let inside_wrapped_string = line_number_layouts
2285 .get(row)
2286 .and_then(|layout| layout.as_ref())
2287 .is_none();
2288 if highlighted_chunk.is_tab {
2289 if non_whitespace_added || !inside_wrapped_string {
2290 invisibles.push(Invisible::Tab {
2291 line_start_offset: line.len(),
2292 });
2293 }
2294 } else {
2295 invisibles.extend(
2296 line_chunk
2297 .chars()
2298 .enumerate()
2299 .filter(|(_, line_char)| {
2300 let is_whitespace = line_char.is_whitespace();
2301 non_whitespace_added |= !is_whitespace;
2302 is_whitespace
2303 && (non_whitespace_added || !inside_wrapped_string)
2304 })
2305 .map(|(whitespace_index, _)| Invisible::Whitespace {
2306 line_offset: line.len() + whitespace_index,
2307 }),
2308 )
2309 }
2310 }
2311
2312 line.push_str(line_chunk);
2313 }
2314 }
2315 }
2316
2317 layouts
2318 }
2319
2320 fn draw(
2321 &self,
2322 layout: &LayoutState,
2323 row: u32,
2324 scroll_top: Pixels,
2325 content_origin: gpui::Point<Pixels>,
2326 scroll_left: Pixels,
2327 whitespace_setting: ShowWhitespaceSetting,
2328 selection_ranges: &[Range<DisplayPoint>],
2329 cx: &mut ViewContext<Editor>,
2330 ) {
2331 let line_height = layout.position_map.line_height;
2332 let line_y = line_height * row as f32 - scroll_top;
2333
2334 self.line.paint(
2335 content_origin + gpui::point(-scroll_left, line_y),
2336 line_height,
2337 cx,
2338 );
2339
2340 self.draw_invisibles(
2341 &selection_ranges,
2342 layout,
2343 content_origin,
2344 scroll_left,
2345 line_y,
2346 row,
2347 line_height,
2348 whitespace_setting,
2349 cx,
2350 );
2351 }
2352
2353 fn draw_invisibles(
2354 &self,
2355 selection_ranges: &[Range<DisplayPoint>],
2356 layout: &LayoutState,
2357 content_origin: gpui::Point<Pixels>,
2358 scroll_left: Pixels,
2359 line_y: Pixels,
2360 row: u32,
2361 line_height: Pixels,
2362 whitespace_setting: ShowWhitespaceSetting,
2363 cx: &mut ViewContext<Editor>,
2364 ) {
2365 let allowed_invisibles_regions = match whitespace_setting {
2366 ShowWhitespaceSetting::None => return,
2367 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2368 ShowWhitespaceSetting::All => None,
2369 };
2370
2371 for invisible in &self.invisibles {
2372 let (&token_offset, invisible_symbol) = match invisible {
2373 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2374 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2375 };
2376
2377 let x_offset = self.line.x_for_index(token_offset);
2378 let invisible_offset =
2379 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2380 let origin =
2381 content_origin + gpui::point(-scroll_left + x_offset + invisible_offset, line_y);
2382
2383 if let Some(allowed_regions) = allowed_invisibles_regions {
2384 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2385 if !allowed_regions
2386 .iter()
2387 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2388 {
2389 continue;
2390 }
2391 }
2392 invisible_symbol.paint(origin, line_height, cx);
2393 }
2394 }
2395}
2396
2397#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2398enum Invisible {
2399 Tab { line_start_offset: usize },
2400 Whitespace { line_offset: usize },
2401}
2402
2403impl Element<Editor> for EditorElement {
2404 type ElementState = ();
2405
2406 fn element_id(&self) -> Option<gpui::ElementId> {
2407 None // todo! can we change the element trait to return an id here from the view context?
2408 }
2409
2410 fn initialize(
2411 &mut self,
2412 editor: &mut Editor,
2413 element_state: Option<Self::ElementState>,
2414 cx: &mut gpui::ViewContext<Editor>,
2415 ) -> Self::ElementState {
2416 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2417 }
2418
2419 fn layout(
2420 &mut self,
2421 editor: &mut Editor,
2422 element_state: &mut Self::ElementState,
2423 cx: &mut gpui::ViewContext<Editor>,
2424 ) -> gpui::LayoutId {
2425 let rem_size = cx.rem_size();
2426 let mut style = Style::default();
2427 style.size.width = relative(1.).into();
2428 style.size.height = match editor.mode {
2429 EditorMode::SingleLine => self.style.text.line_height_in_pixels(cx.rem_size()).into(),
2430 EditorMode::AutoHeight { .. } => todo!(),
2431 EditorMode::Full => relative(1.).into(),
2432 };
2433 cx.request_layout(&style, None)
2434 }
2435
2436 fn paint(
2437 &mut self,
2438 bounds: Bounds<gpui::Pixels>,
2439 editor: &mut Editor,
2440 element_state: &mut Self::ElementState,
2441 cx: &mut gpui::ViewContext<Editor>,
2442 ) {
2443 let mut layout = self.compute_layout(editor, cx, bounds);
2444 let gutter_bounds = Bounds {
2445 origin: bounds.origin,
2446 size: layout.gutter_size,
2447 };
2448 let text_bounds = Bounds {
2449 origin: gutter_bounds.upper_right(),
2450 size: layout.text_size,
2451 };
2452
2453 let dispatch_context = editor.dispatch_context(cx);
2454 cx.with_element_id(Some(cx.view().entity_id()), |cx| {
2455 cx.with_key_dispatch(
2456 dispatch_context,
2457 Some(editor.focus_handle.clone()),
2458 |_, cx| {
2459 register_action(cx, Editor::move_left);
2460 register_action(cx, Editor::move_right);
2461 register_action(cx, Editor::move_down);
2462 register_action(cx, Editor::move_up);
2463 // on_action(cx, Editor::new_file); todo!()
2464 // on_action(cx, Editor::new_file_in_direction); todo!()
2465 register_action(cx, Editor::cancel);
2466 register_action(cx, Editor::newline);
2467 register_action(cx, Editor::newline_above);
2468 register_action(cx, Editor::newline_below);
2469 register_action(cx, Editor::backspace);
2470 register_action(cx, Editor::delete);
2471 register_action(cx, Editor::tab);
2472 register_action(cx, Editor::tab_prev);
2473 register_action(cx, Editor::indent);
2474 register_action(cx, Editor::outdent);
2475 register_action(cx, Editor::delete_line);
2476 register_action(cx, Editor::join_lines);
2477 register_action(cx, Editor::sort_lines_case_sensitive);
2478 register_action(cx, Editor::sort_lines_case_insensitive);
2479 register_action(cx, Editor::reverse_lines);
2480 register_action(cx, Editor::shuffle_lines);
2481 register_action(cx, Editor::convert_to_upper_case);
2482 register_action(cx, Editor::convert_to_lower_case);
2483 register_action(cx, Editor::convert_to_title_case);
2484 register_action(cx, Editor::convert_to_snake_case);
2485 register_action(cx, Editor::convert_to_kebab_case);
2486 register_action(cx, Editor::convert_to_upper_camel_case);
2487 register_action(cx, Editor::convert_to_lower_camel_case);
2488 register_action(cx, Editor::delete_to_previous_word_start);
2489 register_action(cx, Editor::delete_to_previous_subword_start);
2490 register_action(cx, Editor::delete_to_next_word_end);
2491 register_action(cx, Editor::delete_to_next_subword_end);
2492 register_action(cx, Editor::delete_to_beginning_of_line);
2493 register_action(cx, Editor::delete_to_end_of_line);
2494 register_action(cx, Editor::cut_to_end_of_line);
2495 register_action(cx, Editor::duplicate_line);
2496 register_action(cx, Editor::move_line_up);
2497 register_action(cx, Editor::move_line_down);
2498 register_action(cx, Editor::transpose);
2499 register_action(cx, Editor::cut);
2500 register_action(cx, Editor::copy);
2501 register_action(cx, Editor::paste);
2502 register_action(cx, Editor::undo);
2503 register_action(cx, Editor::redo);
2504 register_action(cx, Editor::move_page_up);
2505 register_action(cx, Editor::move_page_down);
2506 register_action(cx, Editor::next_screen);
2507 register_action(cx, Editor::scroll_cursor_top);
2508 register_action(cx, Editor::scroll_cursor_center);
2509 register_action(cx, Editor::scroll_cursor_bottom);
2510 register_action(cx, |editor, _: &LineDown, cx| {
2511 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
2512 });
2513 register_action(cx, |editor, _: &LineUp, cx| {
2514 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
2515 });
2516 register_action(cx, |editor, _: &HalfPageDown, cx| {
2517 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
2518 });
2519 register_action(cx, |editor, _: &HalfPageUp, cx| {
2520 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
2521 });
2522 register_action(cx, |editor, _: &PageDown, cx| {
2523 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
2524 });
2525 register_action(cx, |editor, _: &PageUp, cx| {
2526 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
2527 });
2528 register_action(cx, Editor::move_to_previous_word_start);
2529 register_action(cx, Editor::move_to_previous_subword_start);
2530 register_action(cx, Editor::move_to_next_word_end);
2531 register_action(cx, Editor::move_to_next_subword_end);
2532 register_action(cx, Editor::move_to_beginning_of_line);
2533 register_action(cx, Editor::move_to_end_of_line);
2534 register_action(cx, Editor::move_to_start_of_paragraph);
2535 register_action(cx, Editor::move_to_end_of_paragraph);
2536 register_action(cx, Editor::move_to_beginning);
2537 register_action(cx, Editor::move_to_end);
2538 register_action(cx, Editor::select_up);
2539 register_action(cx, Editor::select_down);
2540 register_action(cx, Editor::select_left);
2541 register_action(cx, Editor::select_right);
2542 register_action(cx, Editor::select_to_previous_word_start);
2543 register_action(cx, Editor::select_to_previous_subword_start);
2544 register_action(cx, Editor::select_to_next_word_end);
2545 register_action(cx, Editor::select_to_next_subword_end);
2546 register_action(cx, Editor::select_to_beginning_of_line);
2547 register_action(cx, Editor::select_to_end_of_line);
2548 register_action(cx, Editor::select_to_start_of_paragraph);
2549 register_action(cx, Editor::select_to_end_of_paragraph);
2550 register_action(cx, Editor::select_to_beginning);
2551 register_action(cx, Editor::select_to_end);
2552 register_action(cx, Editor::select_all);
2553 register_action(cx, |editor, action, cx| {
2554 editor.select_all_matches(action, cx).log_err();
2555 });
2556 register_action(cx, Editor::select_line);
2557 register_action(cx, Editor::split_selection_into_lines);
2558 register_action(cx, Editor::add_selection_above);
2559 register_action(cx, Editor::add_selection_below);
2560 register_action(cx, |editor, action, cx| {
2561 editor.select_next(action, cx).log_err();
2562 });
2563 register_action(cx, |editor, action, cx| {
2564 editor.select_previous(action, cx).log_err();
2565 });
2566 register_action(cx, Editor::toggle_comments);
2567 register_action(cx, Editor::select_larger_syntax_node);
2568 register_action(cx, Editor::select_smaller_syntax_node);
2569 register_action(cx, Editor::move_to_enclosing_bracket);
2570 register_action(cx, Editor::undo_selection);
2571 register_action(cx, Editor::redo_selection);
2572 register_action(cx, Editor::go_to_diagnostic);
2573 register_action(cx, Editor::go_to_prev_diagnostic);
2574 register_action(cx, Editor::go_to_hunk);
2575 register_action(cx, Editor::go_to_prev_hunk);
2576 register_action(cx, Editor::go_to_definition);
2577 register_action(cx, Editor::go_to_definition_split);
2578 register_action(cx, Editor::go_to_type_definition);
2579 register_action(cx, Editor::go_to_type_definition_split);
2580 register_action(cx, Editor::fold);
2581 register_action(cx, Editor::fold_at);
2582 register_action(cx, Editor::unfold_lines);
2583 register_action(cx, Editor::unfold_at);
2584 register_action(cx, Editor::fold_selected_ranges);
2585 register_action(cx, Editor::show_completions);
2586 register_action(cx, Editor::toggle_code_actions);
2587 // on_action(cx, Editor::open_excerpts); todo!()
2588 register_action(cx, Editor::toggle_soft_wrap);
2589 register_action(cx, Editor::toggle_inlay_hints);
2590 register_action(cx, Editor::reveal_in_finder);
2591 register_action(cx, Editor::copy_path);
2592 register_action(cx, Editor::copy_relative_path);
2593 register_action(cx, Editor::copy_highlight_json);
2594 register_action(cx, |editor, action, cx| {
2595 editor
2596 .format(action, cx)
2597 .map(|task| task.detach_and_log_err(cx));
2598 });
2599 register_action(cx, Editor::restart_language_server);
2600 register_action(cx, Editor::show_character_palette);
2601 // on_action(cx, Editor::confirm_completion); todo!()
2602 register_action(cx, |editor, action, cx| {
2603 editor
2604 .confirm_code_action(action, cx)
2605 .map(|task| task.detach_and_log_err(cx));
2606 });
2607 // on_action(cx, Editor::rename); todo!()
2608 // on_action(cx, Editor::confirm_rename); todo!()
2609 register_action(cx, |editor, action, cx| {
2610 editor
2611 .find_all_references(action, cx)
2612 .map(|task| task.detach_and_log_err(cx));
2613 });
2614 register_action(cx, Editor::next_copilot_suggestion);
2615 register_action(cx, Editor::previous_copilot_suggestion);
2616 register_action(cx, Editor::copilot_suggest);
2617 register_action(cx, Editor::context_menu_first);
2618 register_action(cx, Editor::context_menu_prev);
2619 register_action(cx, Editor::context_menu_next);
2620 register_action(cx, Editor::context_menu_last);
2621
2622 // We call with_z_index to establish a new stacking context.
2623 cx.with_z_index(0, |cx| {
2624 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2625 self.paint_mouse_listeners(
2626 bounds,
2627 gutter_bounds,
2628 text_bounds,
2629 &layout.position_map,
2630 cx,
2631 );
2632 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2633 if layout.gutter_size.width > Pixels::ZERO {
2634 self.paint_gutter(gutter_bounds, &mut layout, editor, cx);
2635 }
2636 self.paint_text(text_bounds, &mut layout, editor, cx);
2637
2638 if !layout.blocks.is_empty() {
2639 self.paint_blocks(bounds, &mut layout, editor, cx);
2640 }
2641
2642 let input_handler = ElementInputHandler::new(bounds, cx);
2643 cx.handle_input(&editor.focus_handle, input_handler);
2644 });
2645 });
2646 },
2647 )
2648 });
2649 }
2650}
2651
2652// impl EditorElement {
2653// type LayoutState = LayoutState;
2654// type PaintState = ();
2655
2656// fn layout(
2657// &mut self,
2658// constraint: SizeConstraint,
2659// editor: &mut Editor,
2660// cx: &mut ViewContext<Editor>,
2661// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2662// let mut size = constraint.max;
2663// if size.x.is_infinite() {
2664// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2665// }
2666
2667// let snapshot = editor.snapshot(cx);
2668// let style = self.style.clone();
2669
2670// let line_height = (style.text.font_size * style.line_height_scalar).round();
2671
2672// let gutter_padding;
2673// let gutter_width;
2674// let gutter_margin;
2675// if snapshot.show_gutter {
2676// let em_width = style.text.em_width(cx.font_cache());
2677// gutter_padding = (em_width * style.gutter_padding_factor).round();
2678// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2679// gutter_margin = -style.text.descent(cx.font_cache());
2680// } else {
2681// gutter_padding = 0.0;
2682// gutter_width = 0.0;
2683// gutter_margin = 0.0;
2684// };
2685
2686// let text_width = size.x - gutter_width;
2687// let em_width = style.text.em_width(cx.font_cache());
2688// let em_advance = style.text.em_advance(cx.font_cache());
2689// let overscroll = point(em_width, 0.);
2690// let snapshot = {
2691// editor.set_visible_line_count(size.y / line_height, cx);
2692
2693// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2694// let wrap_width = match editor.soft_wrap_mode(cx) {
2695// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2696// SoftWrap::EditorWidth => editor_width,
2697// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2698// };
2699
2700// if editor.set_wrap_width(Some(wrap_width), cx) {
2701// editor.snapshot(cx)
2702// } else {
2703// snapshot
2704// }
2705// };
2706
2707// let wrap_guides = editor
2708// .wrap_guides(cx)
2709// .iter()
2710// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2711// .collect();
2712
2713// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2714// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2715// size.set_y(
2716// scroll_height
2717// .min(constraint.max_along(Axis::Vertical))
2718// .max(constraint.min_along(Axis::Vertical))
2719// .max(line_height)
2720// .min(line_height * max_lines as f32),
2721// )
2722// } else if let EditorMode::SingleLine = snapshot.mode {
2723// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2724// } else if size.y.is_infinite() {
2725// size.set_y(scroll_height);
2726// }
2727// let gutter_size = point(gutter_width, size.y);
2728// let text_size = point(text_width, size.y);
2729
2730// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2731// let mut snapshot = editor.snapshot(cx);
2732
2733// let scroll_position = snapshot.scroll_position();
2734// // The scroll position is a fractional point, the whole number of which represents
2735// // the top of the window in terms of display rows.
2736// let start_row = scroll_position.y as u32;
2737// let height_in_lines = size.y / line_height;
2738// let max_row = snapshot.max_point().row();
2739
2740// // Add 1 to ensure selections bleed off screen
2741// let end_row = 1 + cmp::min(
2742// (scroll_position.y + height_in_lines).ceil() as u32,
2743// max_row,
2744// );
2745
2746// let start_anchor = if start_row == 0 {
2747// Anchor::min()
2748// } else {
2749// snapshot
2750// .buffer_snapshot
2751// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2752// };
2753// let end_anchor = if end_row > max_row {
2754// Anchor::max
2755// } else {
2756// snapshot
2757// .buffer_snapshot
2758// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2759// };
2760
2761// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2762// let mut active_rows = BTreeMap::new();
2763// let mut fold_ranges = Vec::new();
2764// let is_singleton = editor.is_singleton(cx);
2765
2766// let highlighted_rows = editor.highlighted_rows();
2767// let theme = theme::current(cx);
2768// let highlighted_ranges = editor.background_highlights_in_range(
2769// start_anchor..end_anchor,
2770// &snapshot.display_snapshot,
2771// theme.as_ref(),
2772// );
2773
2774// fold_ranges.extend(
2775// snapshot
2776// .folds_in_range(start_anchor..end_anchor)
2777// .map(|anchor| {
2778// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2779// (
2780// start.row,
2781// start.to_display_point(&snapshot.display_snapshot)
2782// ..anchor.end.to_display_point(&snapshot),
2783// )
2784// }),
2785// );
2786
2787// let mut newest_selection_head = None;
2788
2789// if editor.show_local_selections {
2790// let mut local_selections: Vec<Selection<Point>> = editor
2791// .selections
2792// .disjoint_in_range(start_anchor..end_anchor, cx);
2793// local_selections.extend(editor.selections.pending(cx));
2794// let mut layouts = Vec::new();
2795// let newest = editor.selections.newest(cx);
2796// for selection in local_selections.drain(..) {
2797// let is_empty = selection.start == selection.end;
2798// let is_newest = selection == newest;
2799
2800// let layout = SelectionLayout::new(
2801// selection,
2802// editor.selections.line_mode,
2803// editor.cursor_shape,
2804// &snapshot.display_snapshot,
2805// is_newest,
2806// true,
2807// );
2808// if is_newest {
2809// newest_selection_head = Some(layout.head);
2810// }
2811
2812// for row in cmp::max(layout.active_rows.start, start_row)
2813// ..=cmp::min(layout.active_rows.end, end_row)
2814// {
2815// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2816// *contains_non_empty_selection |= !is_empty;
2817// }
2818// layouts.push(layout);
2819// }
2820
2821// selections.push((style.selection, layouts));
2822// }
2823
2824// if let Some(collaboration_hub) = &editor.collaboration_hub {
2825// // When following someone, render the local selections in their color.
2826// if let Some(leader_id) = editor.leader_peer_id {
2827// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2828// if let Some(participant_index) = collaboration_hub
2829// .user_participant_indices(cx)
2830// .get(&collaborator.user_id)
2831// {
2832// if let Some((local_selection_style, _)) = selections.first_mut() {
2833// *local_selection_style =
2834// style.selection_style_for_room_participant(participant_index.0);
2835// }
2836// }
2837// }
2838// }
2839
2840// let mut remote_selections = HashMap::default();
2841// for selection in snapshot.remote_selections_in_range(
2842// &(start_anchor..end_anchor),
2843// collaboration_hub.as_ref(),
2844// cx,
2845// ) {
2846// let selection_style = if let Some(participant_index) = selection.participant_index {
2847// style.selection_style_for_room_participant(participant_index.0)
2848// } else {
2849// style.absent_selection
2850// };
2851
2852// // Don't re-render the leader's selections, since the local selections
2853// // match theirs.
2854// if Some(selection.peer_id) == editor.leader_peer_id {
2855// continue;
2856// }
2857
2858// remote_selections
2859// .entry(selection.replica_id)
2860// .or_insert((selection_style, Vec::new()))
2861// .1
2862// .push(SelectionLayout::new(
2863// selection.selection,
2864// selection.line_mode,
2865// selection.cursor_shape,
2866// &snapshot.display_snapshot,
2867// false,
2868// false,
2869// ));
2870// }
2871
2872// selections.extend(remote_selections.into_values());
2873// }
2874
2875// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2876// let show_scrollbars = match scrollbar_settings.show {
2877// ShowScrollbar::Auto => {
2878// // Git
2879// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2880// ||
2881// // Selections
2882// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2883// // Scrollmanager
2884// || editor.scroll_manager.scrollbars_visible()
2885// }
2886// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2887// ShowScrollbar::Always => true,
2888// ShowScrollbar::Never => false,
2889// };
2890
2891// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2892// .into_iter()
2893// .map(|(id, fold)| {
2894// let color = self
2895// .style
2896// .folds
2897// .ellipses
2898// .background
2899// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2900// .color;
2901
2902// (id, fold, color)
2903// })
2904// .collect();
2905
2906// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2907// let newest = editor.selections.newest::<Point>(cx);
2908// SelectionLayout::new(
2909// newest,
2910// editor.selections.line_mode,
2911// editor.cursor_shape,
2912// &snapshot.display_snapshot,
2913// true,
2914// true,
2915// )
2916// .head
2917// });
2918
2919// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2920// start_row..end_row,
2921// &active_rows,
2922// head_for_relative,
2923// is_singleton,
2924// &snapshot,
2925// cx,
2926// );
2927
2928// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2929
2930// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2931
2932// let mut max_visible_line_width = 0.0;
2933// let line_layouts =
2934// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2935// for line_with_invisibles in &line_layouts {
2936// if line_with_invisibles.line.width() > max_visible_line_width {
2937// max_visible_line_width = line_with_invisibles.line.width();
2938// }
2939// }
2940
2941// let style = self.style.clone();
2942// let longest_line_width = layout_line(
2943// snapshot.longest_row(),
2944// &snapshot,
2945// &style,
2946// cx.text_layout_cache(),
2947// )
2948// .width();
2949// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2950// let em_width = style.text.em_width(cx.font_cache());
2951// let (scroll_width, blocks) = self.layout_blocks(
2952// start_row..end_row,
2953// &snapshot,
2954// size.x,
2955// scroll_width,
2956// gutter_padding,
2957// gutter_width,
2958// em_width,
2959// gutter_width + gutter_margin,
2960// line_height,
2961// &style,
2962// &line_layouts,
2963// editor,
2964// cx,
2965// );
2966
2967// let scroll_max = point(
2968// ((scroll_width - text_size.x) / em_width).max(0.0),
2969// max_row as f32,
2970// );
2971
2972// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2973
2974// let autoscrolled = if autoscroll_horizontally {
2975// editor.autoscroll_horizontally(
2976// start_row,
2977// text_size.x,
2978// scroll_width,
2979// em_width,
2980// &line_layouts,
2981// cx,
2982// )
2983// } else {
2984// false
2985// };
2986
2987// if clamped || autoscrolled {
2988// snapshot = editor.snapshot(cx);
2989// }
2990
2991// let style = editor.style(cx);
2992
2993// let mut context_menu = None;
2994// let mut code_actions_indicator = None;
2995// if let Some(newest_selection_head) = newest_selection_head {
2996// if (start_row..end_row).contains(&newest_selection_head.row()) {
2997// if editor.context_menu_visible() {
2998// context_menu =
2999// editor.render_context_menu(newest_selection_head, style.clone(), cx);
3000// }
3001
3002// let active = matches!(
3003// editor.context_menu.read().as_ref(),
3004// Some(crate::ContextMenu::CodeActions(_))
3005// );
3006
3007// code_actions_indicator = editor
3008// .render_code_actions_indicator(&style, active, cx)
3009// .map(|indicator| (newest_selection_head.row(), indicator));
3010// }
3011// }
3012
3013// let visible_rows = start_row..start_row + line_layouts.len() as u32;
3014// let mut hover = editor.hover_state.render(
3015// &snapshot,
3016// &style,
3017// visible_rows,
3018// editor.workspace.as_ref().map(|(w, _)| w.clone()),
3019// cx,
3020// );
3021// let mode = editor.mode;
3022
3023// let mut fold_indicators = editor.render_fold_indicators(
3024// fold_statuses,
3025// &style,
3026// editor.gutter_hovered,
3027// line_height,
3028// gutter_margin,
3029// cx,
3030// );
3031
3032// if let Some((_, context_menu)) = context_menu.as_mut() {
3033// context_menu.layout(
3034// SizeConstraint {
3035// min: gpui::Point::<Pixels>::zero(),
3036// max: point(
3037// cx.window_size().x * 0.7,
3038// (12. * line_height).min((size.y - line_height) / 2.),
3039// ),
3040// },
3041// editor,
3042// cx,
3043// );
3044// }
3045
3046// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
3047// indicator.layout(
3048// SizeConstraint::strict_along(
3049// Axis::Vertical,
3050// line_height * style.code_actions.vertical_scale,
3051// ),
3052// editor,
3053// cx,
3054// );
3055// }
3056
3057// for fold_indicator in fold_indicators.iter_mut() {
3058// if let Some(indicator) = fold_indicator.as_mut() {
3059// indicator.layout(
3060// SizeConstraint::strict_along(
3061// Axis::Vertical,
3062// line_height * style.code_actions.vertical_scale,
3063// ),
3064// editor,
3065// cx,
3066// );
3067// }
3068// }
3069
3070// if let Some((_, hover_popovers)) = hover.as_mut() {
3071// for hover_popover in hover_popovers.iter_mut() {
3072// hover_popover.layout(
3073// SizeConstraint {
3074// min: gpui::Point::<Pixels>::zero(),
3075// max: point(
3076// (120. * em_width) // Default size
3077// .min(size.x / 2.) // Shrink to half of the editor width
3078// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3079// (16. * line_height) // Default size
3080// .min(size.y / 2.) // Shrink to half of the editor height
3081// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3082// ),
3083// },
3084// editor,
3085// cx,
3086// );
3087// }
3088// }
3089
3090// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
3091// let invisible_symbol_style = RunStyle {
3092// color: self.style.whitespace,
3093// font_id: self.style.text.font_id,
3094// underline: Default::default(),
3095// };
3096
3097// (
3098// size,
3099// LayoutState {
3100// mode,
3101// position_map: Arc::new(PositionMap {
3102// size,
3103// scroll_max,
3104// line_layouts,
3105// line_height,
3106// em_width,
3107// em_advance,
3108// snapshot,
3109// }),
3110// visible_display_row_range: start_row..end_row,
3111// wrap_guides,
3112// gutter_size,
3113// gutter_padding,
3114// text_size,
3115// scrollbar_row_range,
3116// show_scrollbars,
3117// is_singleton,
3118// max_row,
3119// gutter_margin,
3120// active_rows,
3121// highlighted_rows,
3122// highlighted_ranges,
3123// fold_ranges,
3124// line_number_layouts,
3125// display_hunks,
3126// blocks,
3127// selections,
3128// context_menu,
3129// code_actions_indicator,
3130// fold_indicators,
3131// tab_invisible: cx.text_layout_cache().layout_str(
3132// "→",
3133// invisible_symbol_font_size,
3134// &[("→".len(), invisible_symbol_style)],
3135// ),
3136// space_invisible: cx.text_layout_cache().layout_str(
3137// "•",
3138// invisible_symbol_font_size,
3139// &[("•".len(), invisible_symbol_style)],
3140// ),
3141// hover_popovers: hover,
3142// },
3143// )
3144// }
3145
3146// fn paint(
3147// &mut self,
3148// bounds: Bounds<Pixels>,
3149// visible_bounds: Bounds<Pixels>,
3150// layout: &mut Self::LayoutState,
3151// editor: &mut Editor,
3152// cx: &mut ViewContext<Editor>,
3153// ) -> Self::PaintState {
3154// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
3155// cx.scene().push_layer(Some(visible_bounds));
3156
3157// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
3158// let text_bounds = Bounds::<Pixels>::new(
3159// bounds.origin + point(layout.gutter_size.x, 0.0),
3160// layout.text_size,
3161// );
3162
3163// Self::attach_mouse_handlers(
3164// &layout.position_map,
3165// layout.hover_popovers.is_some(),
3166// visible_bounds,
3167// text_bounds,
3168// gutter_bounds,
3169// bounds,
3170// cx,
3171// );
3172
3173// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3174// if layout.gutter_size.x > 0. {
3175// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3176// }
3177// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3178
3179// cx.scene().push_layer(Some(bounds));
3180// if !layout.blocks.is_empty {
3181// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3182// }
3183// self.paint_scrollbar(bounds, layout, &editor, cx);
3184// cx.scene().pop_layer();
3185// cx.scene().pop_layer();
3186// }
3187
3188// fn rect_for_text_range(
3189// &self,
3190// range_utf16: Range<usize>,
3191// bounds: Bounds<Pixels>,
3192// _: Bounds<Pixels>,
3193// layout: &Self::LayoutState,
3194// _: &Self::PaintState,
3195// _: &Editor,
3196// _: &ViewContext<Editor>,
3197// ) -> Option<Bounds<Pixels>> {
3198// let text_bounds = Bounds::<Pixels>::new(
3199// bounds.origin + point(layout.gutter_size.x, 0.0),
3200// layout.text_size,
3201// );
3202// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3203// let scroll_position = layout.position_map.snapshot.scroll_position();
3204// let start_row = scroll_position.y as u32;
3205// let scroll_top = scroll_position.y * layout.position_map.line_height;
3206// let scroll_left = scroll_position.x * layout.position_map.em_width;
3207
3208// let range_start = OffsetUtf16(range_utf16.start)
3209// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3210// if range_start.row() < start_row {
3211// return None;
3212// }
3213
3214// let line = &layout
3215// .position_map
3216// .line_layouts
3217// .get((range_start.row() - start_row) as usize)?
3218// .line;
3219// let range_start_x = line.x_for_index(range_start.column() as usize);
3220// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3221// Some(Bounds::<Pixels>::new(
3222// content_origin
3223// + point(
3224// range_start_x,
3225// range_start_y + layout.position_map.line_height,
3226// )
3227// - point(scroll_left, scroll_top),
3228// point(
3229// layout.position_map.em_width,
3230// layout.position_map.line_height,
3231// ),
3232// ))
3233// }
3234
3235// fn debug(
3236// &self,
3237// bounds: Bounds<Pixels>,
3238// _: &Self::LayoutState,
3239// _: &Self::PaintState,
3240// _: &Editor,
3241// _: &ViewContext<Editor>,
3242// ) -> json::Value {
3243// json!({
3244// "type": "BufferElement",
3245// "bounds": bounds.to_json()
3246// })
3247// }
3248// }
3249
3250type BufferRow = u32;
3251
3252pub struct LayoutState {
3253 position_map: Arc<PositionMap>,
3254 gutter_size: Size<Pixels>,
3255 gutter_padding: Pixels,
3256 gutter_margin: Pixels,
3257 text_size: gpui::Size<Pixels>,
3258 mode: EditorMode,
3259 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3260 visible_display_row_range: Range<u32>,
3261 active_rows: BTreeMap<u32, bool>,
3262 highlighted_rows: Option<Range<u32>>,
3263 line_number_layouts: Vec<Option<gpui::Line>>,
3264 display_hunks: Vec<DisplayDiffHunk>,
3265 blocks: Vec<BlockLayout>,
3266 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3267 fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Hsla)>,
3268 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3269 scrollbar_row_range: Range<f32>,
3270 show_scrollbars: bool,
3271 is_singleton: bool,
3272 max_row: u32,
3273 context_menu: Option<(DisplayPoint, AnyElement<Editor>)>,
3274 code_actions_indicator: Option<CodeActionsIndicator>,
3275 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement<Editor>>)>,
3276 // fold_indicators: Vec<Option<AnyElement<Editor>>>,
3277 tab_invisible: Line,
3278 space_invisible: Line,
3279}
3280
3281struct CodeActionsIndicator {
3282 row: u32,
3283 element: AnyElement<Editor>,
3284}
3285
3286struct PositionMap {
3287 size: Size<Pixels>,
3288 line_height: Pixels,
3289 scroll_max: gpui::Point<f32>,
3290 em_width: Pixels,
3291 em_advance: Pixels,
3292 line_layouts: Vec<LineWithInvisibles>,
3293 snapshot: EditorSnapshot,
3294}
3295
3296#[derive(Debug, Copy, Clone)]
3297pub struct PointForPosition {
3298 pub previous_valid: DisplayPoint,
3299 pub next_valid: DisplayPoint,
3300 pub exact_unclipped: DisplayPoint,
3301 pub column_overshoot_after_line_end: u32,
3302}
3303
3304impl PointForPosition {
3305 #[cfg(test)]
3306 pub fn valid(valid: DisplayPoint) -> Self {
3307 Self {
3308 previous_valid: valid,
3309 next_valid: valid,
3310 exact_unclipped: valid,
3311 column_overshoot_after_line_end: 0,
3312 }
3313 }
3314
3315 pub fn as_valid(&self) -> Option<DisplayPoint> {
3316 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3317 Some(self.previous_valid)
3318 } else {
3319 None
3320 }
3321 }
3322}
3323
3324impl PositionMap {
3325 fn point_for_position(
3326 &self,
3327 text_bounds: Bounds<Pixels>,
3328 position: gpui::Point<Pixels>,
3329 ) -> PointForPosition {
3330 let scroll_position = self.snapshot.scroll_position();
3331 let position = position - text_bounds.origin;
3332 let y = position.y.max(px(0.)).min(self.size.width);
3333 let x = position.x + (scroll_position.x * self.em_width);
3334 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3335
3336 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3337 .line_layouts
3338 .get(row as usize - scroll_position.y as usize)
3339 .map(|&LineWithInvisibles { ref line, .. }| line)
3340 {
3341 if let Some(ix) = line.index_for_x(x) {
3342 (ix as u32, px(0.))
3343 } else {
3344 (line.len as u32, px(0.).max(x - line.width))
3345 }
3346 } else {
3347 (0, x)
3348 };
3349
3350 let mut exact_unclipped = DisplayPoint::new(row, column);
3351 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3352 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3353
3354 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3355 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3356 PointForPosition {
3357 previous_valid,
3358 next_valid,
3359 exact_unclipped,
3360 column_overshoot_after_line_end,
3361 }
3362 }
3363}
3364
3365struct BlockLayout {
3366 row: u32,
3367 element: AnyElement<Editor>,
3368 available_space: Size<AvailableSpace>,
3369 style: BlockStyle,
3370}
3371
3372fn layout_line(
3373 row: u32,
3374 snapshot: &EditorSnapshot,
3375 style: &EditorStyle,
3376 cx: &WindowContext,
3377) -> Result<Line> {
3378 let mut line = snapshot.line(row);
3379
3380 if line.len() > MAX_LINE_LEN {
3381 let mut len = MAX_LINE_LEN;
3382 while !line.is_char_boundary(len) {
3383 len -= 1;
3384 }
3385
3386 line.truncate(len);
3387 }
3388
3389 Ok(cx
3390 .text_system()
3391 .layout_text(
3392 &line,
3393 style.text.font_size.to_pixels(cx.rem_size()),
3394 &[TextRun {
3395 len: snapshot.line_len(row) as usize,
3396 font: style.text.font(),
3397 color: Hsla::default(),
3398 underline: None,
3399 }],
3400 None,
3401 )?
3402 .pop()
3403 .unwrap())
3404}
3405
3406#[derive(Debug)]
3407pub struct Cursor {
3408 origin: gpui::Point<Pixels>,
3409 block_width: Pixels,
3410 line_height: Pixels,
3411 color: Hsla,
3412 shape: CursorShape,
3413 block_text: Option<Line>,
3414}
3415
3416impl Cursor {
3417 pub fn new(
3418 origin: gpui::Point<Pixels>,
3419 block_width: Pixels,
3420 line_height: Pixels,
3421 color: Hsla,
3422 shape: CursorShape,
3423 block_text: Option<Line>,
3424 ) -> Cursor {
3425 Cursor {
3426 origin,
3427 block_width,
3428 line_height,
3429 color,
3430 shape,
3431 block_text,
3432 }
3433 }
3434
3435 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3436 Bounds {
3437 origin: self.origin + origin,
3438 size: size(self.block_width, self.line_height),
3439 }
3440 }
3441
3442 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3443 let bounds = match self.shape {
3444 CursorShape::Bar => Bounds {
3445 origin: self.origin + origin,
3446 size: size(px(2.0), self.line_height),
3447 },
3448 CursorShape::Block | CursorShape::Hollow => Bounds {
3449 origin: self.origin + origin,
3450 size: size(self.block_width, self.line_height),
3451 },
3452 CursorShape::Underscore => Bounds {
3453 origin: self.origin
3454 + origin
3455 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3456 size: size(self.block_width, px(2.0)),
3457 },
3458 };
3459
3460 //Draw background or border quad
3461 if matches!(self.shape, CursorShape::Hollow) {
3462 cx.paint_quad(
3463 bounds,
3464 Corners::default(),
3465 transparent_black(),
3466 Edges::all(px(1.)),
3467 self.color,
3468 );
3469 } else {
3470 cx.paint_quad(
3471 bounds,
3472 Corners::default(),
3473 self.color,
3474 Edges::default(),
3475 transparent_black(),
3476 );
3477 }
3478
3479 if let Some(block_text) = &self.block_text {
3480 block_text.paint(self.origin + origin, self.line_height, cx);
3481 }
3482 }
3483
3484 pub fn shape(&self) -> CursorShape {
3485 self.shape
3486 }
3487}
3488
3489#[derive(Debug)]
3490pub struct HighlightedRange {
3491 pub start_y: Pixels,
3492 pub line_height: Pixels,
3493 pub lines: Vec<HighlightedRangeLine>,
3494 pub color: Hsla,
3495 pub corner_radius: Pixels,
3496}
3497
3498#[derive(Debug)]
3499pub struct HighlightedRangeLine {
3500 pub start_x: Pixels,
3501 pub end_x: Pixels,
3502}
3503
3504impl HighlightedRange {
3505 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3506 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3507 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3508 self.paint_lines(
3509 self.start_y + self.line_height,
3510 &self.lines[1..],
3511 bounds,
3512 cx,
3513 );
3514 } else {
3515 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3516 }
3517 }
3518
3519 fn paint_lines(
3520 &self,
3521 start_y: Pixels,
3522 lines: &[HighlightedRangeLine],
3523 bounds: Bounds<Pixels>,
3524 cx: &mut WindowContext,
3525 ) {
3526 if lines.is_empty() {
3527 return;
3528 }
3529
3530 let first_line = lines.first().unwrap();
3531 let last_line = lines.last().unwrap();
3532
3533 let first_top_left = point(first_line.start_x, start_y);
3534 let first_top_right = point(first_line.end_x, start_y);
3535
3536 let curve_height = point(Pixels::ZERO, self.corner_radius);
3537 let curve_width = |start_x: Pixels, end_x: Pixels| {
3538 let max = (end_x - start_x) / 2.;
3539 let width = if max < self.corner_radius {
3540 max
3541 } else {
3542 self.corner_radius
3543 };
3544
3545 point(width, Pixels::ZERO)
3546 };
3547
3548 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3549 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3550 path.curve_to(first_top_right + curve_height, first_top_right);
3551
3552 let mut iter = lines.iter().enumerate().peekable();
3553 while let Some((ix, line)) = iter.next() {
3554 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3555
3556 if let Some((_, next_line)) = iter.peek() {
3557 let next_top_right = point(next_line.end_x, bottom_right.y);
3558
3559 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3560 Ordering::Equal => {
3561 path.line_to(bottom_right);
3562 }
3563 Ordering::Less => {
3564 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3565 path.line_to(bottom_right - curve_height);
3566 if self.corner_radius > Pixels::ZERO {
3567 path.curve_to(bottom_right - curve_width, bottom_right);
3568 }
3569 path.line_to(next_top_right + curve_width);
3570 if self.corner_radius > Pixels::ZERO {
3571 path.curve_to(next_top_right + curve_height, next_top_right);
3572 }
3573 }
3574 Ordering::Greater => {
3575 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3576 path.line_to(bottom_right - curve_height);
3577 if self.corner_radius > Pixels::ZERO {
3578 path.curve_to(bottom_right + curve_width, bottom_right);
3579 }
3580 path.line_to(next_top_right - curve_width);
3581 if self.corner_radius > Pixels::ZERO {
3582 path.curve_to(next_top_right + curve_height, next_top_right);
3583 }
3584 }
3585 }
3586 } else {
3587 let curve_width = curve_width(line.start_x, line.end_x);
3588 path.line_to(bottom_right - curve_height);
3589 if self.corner_radius > Pixels::ZERO {
3590 path.curve_to(bottom_right - curve_width, bottom_right);
3591 }
3592
3593 let bottom_left = point(line.start_x, bottom_right.y);
3594 path.line_to(bottom_left + curve_width);
3595 if self.corner_radius > Pixels::ZERO {
3596 path.curve_to(bottom_left - curve_height, bottom_left);
3597 }
3598 }
3599 }
3600
3601 if first_line.start_x > last_line.start_x {
3602 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3603 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3604 path.line_to(second_top_left + curve_height);
3605 if self.corner_radius > Pixels::ZERO {
3606 path.curve_to(second_top_left + curve_width, second_top_left);
3607 }
3608 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3609 path.line_to(first_bottom_left - curve_width);
3610 if self.corner_radius > Pixels::ZERO {
3611 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3612 }
3613 }
3614
3615 path.line_to(first_top_left + curve_height);
3616 if self.corner_radius > Pixels::ZERO {
3617 path.curve_to(first_top_left + top_curve_width, first_top_left);
3618 }
3619 path.line_to(first_top_right - top_curve_width);
3620
3621 cx.paint_path(path, self.color);
3622 }
3623}
3624
3625// fn range_to_bounds(
3626// range: &Range<DisplayPoint>,
3627// content_origin: gpui::Point<Pixels>,
3628// scroll_left: f32,
3629// scroll_top: f32,
3630// visible_row_range: &Range<u32>,
3631// line_end_overshoot: f32,
3632// position_map: &PositionMap,
3633// ) -> impl Iterator<Item = Bounds<Pixels>> {
3634// let mut bounds: SmallVec<[Bounds<Pixels>; 1]> = SmallVec::new();
3635
3636// if range.start == range.end {
3637// return bounds.into_iter();
3638// }
3639
3640// let start_row = visible_row_range.start;
3641// let end_row = visible_row_range.end;
3642
3643// let row_range = if range.end.column() == 0 {
3644// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3645// } else {
3646// cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
3647// };
3648
3649// let first_y =
3650// content_origin.y + row_range.start as f32 * position_map.line_height - scroll_top;
3651
3652// for (idx, row) in row_range.enumerate() {
3653// let line_layout = &position_map.line_layouts[(row - start_row) as usize].line;
3654
3655// let start_x = if row == range.start.row() {
3656// content_origin.x + line_layout.x_for_index(range.start.column() as usize)
3657// - scroll_left
3658// } else {
3659// content_origin.x - scroll_left
3660// };
3661
3662// let end_x = if row == range.end.row() {
3663// content_origin.x + line_layout.x_for_index(range.end.column() as usize) - scroll_left
3664// } else {
3665// content_origin.x + line_layout.width() + line_end_overshoot - scroll_left
3666// };
3667
3668// bounds.push(Bounds::<Pixels>::from_points(
3669// point(start_x, first_y + position_map.line_height * idx as f32),
3670// point(end_x, first_y + position_map.line_height * (idx + 1) as f32),
3671// ))
3672// }
3673
3674// bounds.into_iter()
3675// }
3676
3677pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3678 (delta.pow(1.5) / 100.0).into()
3679}
3680
3681fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3682 (delta.pow(1.2) / 300.0).into()
3683}
3684
3685// #[cfg(test)]
3686// mod tests {
3687// use super::*;
3688// use crate::{
3689// display_map::{BlockDisposition, BlockProperties},
3690// editor_tests::{init_test, update_test_language_settings},
3691// Editor, MultiBuffer,
3692// };
3693// use gpui::TestAppContext;
3694// use language::language_settings;
3695// use log::info;
3696// use std::{num::NonZeroU32, sync::Arc};
3697// use util::test::sample_text;
3698
3699// #[gpui::test]
3700// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3701// init_test(cx, |_| {});
3702// let editor = cx
3703// .add_window(|cx| {
3704// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3705// Editor::new(EditorMode::Full, buffer, None, None, cx)
3706// })
3707// .root(cx);
3708// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3709
3710// let layouts = editor.update(cx, |editor, cx| {
3711// let snapshot = editor.snapshot(cx);
3712// element
3713// .layout_line_numbers(
3714// 0..6,
3715// &Default::default(),
3716// DisplayPoint::new(0, 0),
3717// false,
3718// &snapshot,
3719// cx,
3720// )
3721// .0
3722// });
3723// assert_eq!(layouts.len(), 6);
3724
3725// let relative_rows = editor.update(cx, |editor, cx| {
3726// let snapshot = editor.snapshot(cx);
3727// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3728// });
3729// assert_eq!(relative_rows[&0], 3);
3730// assert_eq!(relative_rows[&1], 2);
3731// assert_eq!(relative_rows[&2], 1);
3732// // current line has no relative number
3733// assert_eq!(relative_rows[&4], 1);
3734// assert_eq!(relative_rows[&5], 2);
3735
3736// // works if cursor is before screen
3737// let relative_rows = editor.update(cx, |editor, cx| {
3738// let snapshot = editor.snapshot(cx);
3739
3740// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3741// });
3742// assert_eq!(relative_rows.len(), 3);
3743// assert_eq!(relative_rows[&3], 2);
3744// assert_eq!(relative_rows[&4], 3);
3745// assert_eq!(relative_rows[&5], 4);
3746
3747// // works if cursor is after screen
3748// let relative_rows = editor.update(cx, |editor, cx| {
3749// let snapshot = editor.snapshot(cx);
3750
3751// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3752// });
3753// assert_eq!(relative_rows.len(), 3);
3754// assert_eq!(relative_rows[&0], 5);
3755// assert_eq!(relative_rows[&1], 4);
3756// assert_eq!(relative_rows[&2], 3);
3757// }
3758
3759// #[gpui::test]
3760// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3761// init_test(cx, |_| {});
3762
3763// let editor = cx
3764// .add_window(|cx| {
3765// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3766// Editor::new(EditorMode::Full, buffer, None, None, cx)
3767// })
3768// .root(cx);
3769// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3770// let (_, state) = editor.update(cx, |editor, cx| {
3771// editor.cursor_shape = CursorShape::Block;
3772// editor.change_selections(None, cx, |s| {
3773// s.select_ranges([
3774// Point::new(0, 0)..Point::new(1, 0),
3775// Point::new(3, 2)..Point::new(3, 3),
3776// Point::new(5, 6)..Point::new(6, 0),
3777// ]);
3778// });
3779// element.layout(
3780// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3781// editor,
3782// cx,
3783// )
3784// });
3785// assert_eq!(state.selections.len(), 1);
3786// let local_selections = &state.selections[0].1;
3787// assert_eq!(local_selections.len(), 3);
3788// // moves cursor back one line
3789// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3790// assert_eq!(
3791// local_selections[0].range,
3792// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3793// );
3794
3795// // moves cursor back one column
3796// assert_eq!(
3797// local_selections[1].range,
3798// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3799// );
3800// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3801
3802// // leaves cursor on the max point
3803// assert_eq!(
3804// local_selections[2].range,
3805// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3806// );
3807// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3808
3809// // active lines does not include 1 (even though the range of the selection does)
3810// assert_eq!(
3811// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3812// vec![0, 3, 5, 6]
3813// );
3814
3815// // multi-buffer support
3816// // in DisplayPoint co-ordinates, this is what we're dealing with:
3817// // 0: [[file
3818// // 1: header]]
3819// // 2: aaaaaa
3820// // 3: bbbbbb
3821// // 4: cccccc
3822// // 5:
3823// // 6: ...
3824// // 7: ffffff
3825// // 8: gggggg
3826// // 9: hhhhhh
3827// // 10:
3828// // 11: [[file
3829// // 12: header]]
3830// // 13: bbbbbb
3831// // 14: cccccc
3832// // 15: dddddd
3833// let editor = cx
3834// .add_window(|cx| {
3835// let buffer = MultiBuffer::build_multi(
3836// [
3837// (
3838// &(sample_text(8, 6, 'a') + "\n"),
3839// vec![
3840// Point::new(0, 0)..Point::new(3, 0),
3841// Point::new(4, 0)..Point::new(7, 0),
3842// ],
3843// ),
3844// (
3845// &(sample_text(8, 6, 'a') + "\n"),
3846// vec![Point::new(1, 0)..Point::new(3, 0)],
3847// ),
3848// ],
3849// cx,
3850// );
3851// Editor::new(EditorMode::Full, buffer, None, None, cx)
3852// })
3853// .root(cx);
3854// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3855// let (_, state) = editor.update(cx, |editor, cx| {
3856// editor.cursor_shape = CursorShape::Block;
3857// editor.change_selections(None, cx, |s| {
3858// s.select_display_ranges([
3859// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3860// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3861// ]);
3862// });
3863// element.layout(
3864// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3865// editor,
3866// cx,
3867// )
3868// });
3869
3870// assert_eq!(state.selections.len(), 1);
3871// let local_selections = &state.selections[0].1;
3872// assert_eq!(local_selections.len(), 2);
3873
3874// // moves cursor on excerpt boundary back a line
3875// // and doesn't allow selection to bleed through
3876// assert_eq!(
3877// local_selections[0].range,
3878// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3879// );
3880// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3881
3882// // moves cursor on buffer boundary back two lines
3883// // and doesn't allow selection to bleed through
3884// assert_eq!(
3885// local_selections[1].range,
3886// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3887// );
3888// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3889// }
3890
3891// #[gpui::test]
3892// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3893// init_test(cx, |_| {});
3894
3895// let editor = cx
3896// .add_window(|cx| {
3897// let buffer = MultiBuffer::build_simple("", cx);
3898// Editor::new(EditorMode::Full, buffer, None, None, cx)
3899// })
3900// .root(cx);
3901
3902// editor.update(cx, |editor, cx| {
3903// editor.set_placeholder_text("hello", cx);
3904// editor.insert_blocks(
3905// [BlockProperties {
3906// style: BlockStyle::Fixed,
3907// disposition: BlockDisposition::Above,
3908// height: 3,
3909// position: Anchor::min(),
3910// render: Arc::new(|_| Empty::new().into_any),
3911// }],
3912// None,
3913// cx,
3914// );
3915
3916// // Blur the editor so that it displays placeholder text.
3917// cx.blur();
3918// });
3919
3920// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3921// let (size, mut state) = editor.update(cx, |editor, cx| {
3922// element.layout(
3923// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3924// editor,
3925// cx,
3926// )
3927// });
3928
3929// assert_eq!(state.position_map.line_layouts.len(), 4);
3930// assert_eq!(
3931// state
3932// .line_number_layouts
3933// .iter()
3934// .map(Option::is_some)
3935// .collect::<Vec<_>>(),
3936// &[false, false, false, true]
3937// );
3938
3939// // Don't panic.
3940// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3941// editor.update(cx, |editor, cx| {
3942// element.paint(bounds, bounds, &mut state, editor, cx);
3943// });
3944// }
3945
3946// #[gpui::test]
3947// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3948// const TAB_SIZE: u32 = 4;
3949
3950// let input_text = "\t \t|\t| a b";
3951// let expected_invisibles = vec![
3952// Invisible::Tab {
3953// line_start_offset: 0,
3954// },
3955// Invisible::Whitespace {
3956// line_offset: TAB_SIZE as usize,
3957// },
3958// Invisible::Tab {
3959// line_start_offset: TAB_SIZE as usize + 1,
3960// },
3961// Invisible::Tab {
3962// line_start_offset: TAB_SIZE as usize * 2 + 1,
3963// },
3964// Invisible::Whitespace {
3965// line_offset: TAB_SIZE as usize * 3 + 1,
3966// },
3967// Invisible::Whitespace {
3968// line_offset: TAB_SIZE as usize * 3 + 3,
3969// },
3970// ];
3971// assert_eq!(
3972// expected_invisibles.len(),
3973// input_text
3974// .chars()
3975// .filter(|initial_char| initial_char.is_whitespace())
3976// .count(),
3977// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3978// );
3979
3980// init_test(cx, |s| {
3981// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3982// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3983// });
3984
3985// let actual_invisibles =
3986// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3987
3988// assert_eq!(expected_invisibles, actual_invisibles);
3989// }
3990
3991// #[gpui::test]
3992// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3993// init_test(cx, |s| {
3994// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3995// s.defaults.tab_size = NonZeroU32::new(4);
3996// });
3997
3998// for editor_mode_without_invisibles in [
3999// EditorMode::SingleLine,
4000// EditorMode::AutoHeight { max_lines: 100 },
4001// ] {
4002// let invisibles = collect_invisibles_from_new_editor(
4003// cx,
4004// editor_mode_without_invisibles,
4005// "\t\t\t| | a b",
4006// 500.0,
4007// );
4008// assert!(invisibles.is_empty,
4009// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4010// }
4011// }
4012
4013// #[gpui::test]
4014// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4015// let tab_size = 4;
4016// let input_text = "a\tbcd ".repeat(9);
4017// let repeated_invisibles = [
4018// Invisible::Tab {
4019// line_start_offset: 1,
4020// },
4021// Invisible::Whitespace {
4022// line_offset: tab_size as usize + 3,
4023// },
4024// Invisible::Whitespace {
4025// line_offset: tab_size as usize + 4,
4026// },
4027// Invisible::Whitespace {
4028// line_offset: tab_size as usize + 5,
4029// },
4030// ];
4031// let expected_invisibles = std::iter::once(repeated_invisibles)
4032// .cycle()
4033// .take(9)
4034// .flatten()
4035// .collect::<Vec<_>>();
4036// assert_eq!(
4037// expected_invisibles.len(),
4038// input_text
4039// .chars()
4040// .filter(|initial_char| initial_char.is_whitespace())
4041// .count(),
4042// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4043// );
4044// info!("Expected invisibles: {expected_invisibles:?}");
4045
4046// init_test(cx, |_| {});
4047
4048// // Put the same string with repeating whitespace pattern into editors of various size,
4049// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4050// let resize_step = 10.0;
4051// let mut editor_width = 200.0;
4052// while editor_width <= 1000.0 {
4053// update_test_language_settings(cx, |s| {
4054// s.defaults.tab_size = NonZeroU32::new(tab_size);
4055// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4056// s.defaults.preferred_line_length = Some(editor_width as u32);
4057// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4058// });
4059
4060// let actual_invisibles =
4061// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
4062
4063// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4064// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4065// let mut i = 0;
4066// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4067// i = actual_index;
4068// match expected_invisibles.get(i) {
4069// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4070// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4071// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4072// _ => {
4073// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4074// }
4075// },
4076// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4077// }
4078// }
4079// let missing_expected_invisibles = &expected_invisibles[i + 1..];
4080// assert!(
4081// missing_expected_invisibles.is_empty,
4082// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4083// );
4084
4085// editor_width += resize_step;
4086// }
4087// }
4088
4089// fn collect_invisibles_from_new_editor(
4090// cx: &mut TestAppContext,
4091// editor_mode: EditorMode,
4092// input_text: &str,
4093// editor_width: f32,
4094// ) -> Vec<Invisible> {
4095// info!(
4096// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
4097// );
4098// let editor = cx
4099// .add_window(|cx| {
4100// let buffer = MultiBuffer::build_simple(&input_text, cx);
4101// Editor::new(editor_mode, buffer, None, None, cx)
4102// })
4103// .root(cx);
4104
4105// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
4106// let (_, layout_state) = editor.update(cx, |editor, cx| {
4107// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4108// editor.set_wrap_width(Some(editor_width), cx);
4109
4110// element.layout(
4111// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
4112// editor,
4113// cx,
4114// )
4115// });
4116
4117// layout_state
4118// .position_map
4119// .line_layouts
4120// .iter()
4121// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
4122// .flatten()
4123// .cloned()
4124// .collect()
4125// }
4126// }
4127
4128fn register_action<T: Action>(
4129 cx: &mut ViewContext<Editor>,
4130 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4131) {
4132 cx.on_action(TypeId::of::<T>(), move |editor, action, phase, cx| {
4133 let action = action.downcast_ref().unwrap();
4134 if phase == DispatchPhase::Bubble {
4135 listener(editor, action, cx);
4136 }
4137 })
4138}