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::{
9 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
10 },
11 items::BufferSearchHighlights,
12 mouse_context_menu,
13 scroll::scroll_amount::ScrollAmount,
14 CursorShape, DisplayPoint, DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode,
15 EditorSettings, EditorSnapshot, EditorStyle, GutterDimensions, HalfPageDown, HalfPageUp,
16 HoveredCursor, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, SelectPhase, Selection,
17 SoftWrap, ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
18};
19use anyhow::Result;
20use collections::{BTreeMap, HashMap};
21use git::diff::DiffHunkStatus;
22use gpui::{
23 div, fill, outline, overlay, point, px, quad, relative, size, transparent_black, Action,
24 AnchorCorner, AnyElement, AvailableSpace, Bounds, ContentMask, Corners, CursorStyle,
25 DispatchPhase, Edges, Element, ElementInputHandler, Entity, Hsla, InteractiveBounds,
26 InteractiveElement, IntoElement, ModifiersChangedEvent, MouseButton, MouseDownEvent,
27 MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine,
28 SharedString, Size, StackingOrder, StatefulInteractiveElement, Style, Styled, TextRun,
29 TextStyle, View, ViewContext, WindowContext,
30};
31use itertools::Itertools;
32use language::language_settings::ShowWhitespaceSetting;
33use lsp::DiagnosticSeverity;
34use multi_buffer::Anchor;
35use project::{
36 project_settings::{GitGutterSetting, ProjectSettings},
37 ProjectPath,
38};
39use settings::Settings;
40use smallvec::SmallVec;
41use std::{
42 any::TypeId,
43 borrow::Cow,
44 cmp::{self, Ordering},
45 fmt::Write,
46 iter,
47 ops::Range,
48 sync::Arc,
49};
50use sum_tree::Bias;
51use theme::{ActiveTheme, PlayerColor};
52use ui::prelude::*;
53use ui::{h_flex, ButtonLike, ButtonStyle, IconButton, Tooltip};
54use util::ResultExt;
55use workspace::item::Item;
56
57struct SelectionLayout {
58 head: DisplayPoint,
59 cursor_shape: CursorShape,
60 is_newest: bool,
61 is_local: bool,
62 range: Range<DisplayPoint>,
63 active_rows: Range<u32>,
64 user_name: Option<SharedString>,
65}
66
67impl SelectionLayout {
68 fn new<T: ToPoint + ToDisplayPoint + Clone>(
69 selection: Selection<T>,
70 line_mode: bool,
71 cursor_shape: CursorShape,
72 map: &DisplaySnapshot,
73 is_newest: bool,
74 is_local: bool,
75 user_name: Option<SharedString>,
76 ) -> Self {
77 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
78 let display_selection = point_selection.map(|p| p.to_display_point(map));
79 let mut range = display_selection.range();
80 let mut head = display_selection.head();
81 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
82 ..map.next_line_boundary(point_selection.end).1.row();
83
84 // vim visual line mode
85 if line_mode {
86 let point_range = map.expand_to_line(point_selection.range());
87 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
88 }
89
90 // any vim visual mode (including line mode)
91 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
92 if head.column() > 0 {
93 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
94 } else if head.row() > 0 && head != map.max_point() {
95 head = map.clip_point(
96 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
97 Bias::Left,
98 );
99 // updating range.end is a no-op unless you're cursor is
100 // on the newline containing a multi-buffer divider
101 // in which case the clip_point may have moved the head up
102 // an additional row.
103 range.end = DisplayPoint::new(head.row() + 1, 0);
104 active_rows.end = head.row();
105 }
106 }
107
108 Self {
109 head,
110 cursor_shape,
111 is_newest,
112 is_local,
113 range,
114 active_rows,
115 user_name,
116 }
117 }
118}
119
120pub struct EditorElement {
121 editor: View<Editor>,
122 style: EditorStyle,
123}
124
125impl EditorElement {
126 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
127 Self {
128 editor: editor.clone(),
129 style,
130 }
131 }
132
133 fn register_actions(&self, cx: &mut WindowContext) {
134 let view = &self.editor;
135 view.update(cx, |editor, cx| {
136 for action in editor.editor_actions.iter() {
137 (action)(cx)
138 }
139 });
140
141 crate::rust_analyzer_ext::apply_related_actions(view, cx);
142 register_action(view, cx, Editor::move_left);
143 register_action(view, cx, Editor::move_right);
144 register_action(view, cx, Editor::move_down);
145 register_action(view, cx, Editor::move_down_by_lines);
146 register_action(view, cx, Editor::select_down_by_lines);
147 register_action(view, cx, Editor::move_up);
148 register_action(view, cx, Editor::move_up_by_lines);
149 register_action(view, cx, Editor::select_up_by_lines);
150 register_action(view, cx, Editor::cancel);
151 register_action(view, cx, Editor::newline);
152 register_action(view, cx, Editor::newline_above);
153 register_action(view, cx, Editor::newline_below);
154 register_action(view, cx, Editor::backspace);
155 register_action(view, cx, Editor::delete);
156 register_action(view, cx, Editor::tab);
157 register_action(view, cx, Editor::tab_prev);
158 register_action(view, cx, Editor::indent);
159 register_action(view, cx, Editor::outdent);
160 register_action(view, cx, Editor::delete_line);
161 register_action(view, cx, Editor::join_lines);
162 register_action(view, cx, Editor::sort_lines_case_sensitive);
163 register_action(view, cx, Editor::sort_lines_case_insensitive);
164 register_action(view, cx, Editor::reverse_lines);
165 register_action(view, cx, Editor::shuffle_lines);
166 register_action(view, cx, Editor::convert_to_upper_case);
167 register_action(view, cx, Editor::convert_to_lower_case);
168 register_action(view, cx, Editor::convert_to_title_case);
169 register_action(view, cx, Editor::convert_to_snake_case);
170 register_action(view, cx, Editor::convert_to_kebab_case);
171 register_action(view, cx, Editor::convert_to_upper_camel_case);
172 register_action(view, cx, Editor::convert_to_lower_camel_case);
173 register_action(view, cx, Editor::delete_to_previous_word_start);
174 register_action(view, cx, Editor::delete_to_previous_subword_start);
175 register_action(view, cx, Editor::delete_to_next_word_end);
176 register_action(view, cx, Editor::delete_to_next_subword_end);
177 register_action(view, cx, Editor::delete_to_beginning_of_line);
178 register_action(view, cx, Editor::delete_to_end_of_line);
179 register_action(view, cx, Editor::cut_to_end_of_line);
180 register_action(view, cx, Editor::duplicate_line);
181 register_action(view, cx, Editor::move_line_up);
182 register_action(view, cx, Editor::move_line_down);
183 register_action(view, cx, Editor::transpose);
184 register_action(view, cx, Editor::cut);
185 register_action(view, cx, Editor::copy);
186 register_action(view, cx, Editor::paste);
187 register_action(view, cx, Editor::undo);
188 register_action(view, cx, Editor::redo);
189 register_action(view, cx, Editor::move_page_up);
190 register_action(view, cx, Editor::move_page_down);
191 register_action(view, cx, Editor::next_screen);
192 register_action(view, cx, Editor::scroll_cursor_top);
193 register_action(view, cx, Editor::scroll_cursor_center);
194 register_action(view, cx, Editor::scroll_cursor_bottom);
195 register_action(view, cx, |editor, _: &LineDown, cx| {
196 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
197 });
198 register_action(view, cx, |editor, _: &LineUp, cx| {
199 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
200 });
201 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
202 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
203 });
204 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
205 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
206 });
207 register_action(view, cx, |editor, _: &PageDown, cx| {
208 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
209 });
210 register_action(view, cx, |editor, _: &PageUp, cx| {
211 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
212 });
213 register_action(view, cx, Editor::move_to_previous_word_start);
214 register_action(view, cx, Editor::move_to_previous_subword_start);
215 register_action(view, cx, Editor::move_to_next_word_end);
216 register_action(view, cx, Editor::move_to_next_subword_end);
217 register_action(view, cx, Editor::move_to_beginning_of_line);
218 register_action(view, cx, Editor::move_to_end_of_line);
219 register_action(view, cx, Editor::move_to_start_of_paragraph);
220 register_action(view, cx, Editor::move_to_end_of_paragraph);
221 register_action(view, cx, Editor::move_to_beginning);
222 register_action(view, cx, Editor::move_to_end);
223 register_action(view, cx, Editor::select_up);
224 register_action(view, cx, Editor::select_down);
225 register_action(view, cx, Editor::select_left);
226 register_action(view, cx, Editor::select_right);
227 register_action(view, cx, Editor::select_to_previous_word_start);
228 register_action(view, cx, Editor::select_to_previous_subword_start);
229 register_action(view, cx, Editor::select_to_next_word_end);
230 register_action(view, cx, Editor::select_to_next_subword_end);
231 register_action(view, cx, Editor::select_to_beginning_of_line);
232 register_action(view, cx, Editor::select_to_end_of_line);
233 register_action(view, cx, Editor::select_to_start_of_paragraph);
234 register_action(view, cx, Editor::select_to_end_of_paragraph);
235 register_action(view, cx, Editor::select_to_beginning);
236 register_action(view, cx, Editor::select_to_end);
237 register_action(view, cx, Editor::select_all);
238 register_action(view, cx, |editor, action, cx| {
239 editor.select_all_matches(action, cx).log_err();
240 });
241 register_action(view, cx, Editor::select_line);
242 register_action(view, cx, Editor::split_selection_into_lines);
243 register_action(view, cx, Editor::add_selection_above);
244 register_action(view, cx, Editor::add_selection_below);
245 register_action(view, cx, |editor, action, cx| {
246 editor.select_next(action, cx).log_err();
247 });
248 register_action(view, cx, |editor, action, cx| {
249 editor.select_previous(action, cx).log_err();
250 });
251 register_action(view, cx, Editor::toggle_comments);
252 register_action(view, cx, Editor::select_larger_syntax_node);
253 register_action(view, cx, Editor::select_smaller_syntax_node);
254 register_action(view, cx, Editor::move_to_enclosing_bracket);
255 register_action(view, cx, Editor::undo_selection);
256 register_action(view, cx, Editor::redo_selection);
257 register_action(view, cx, Editor::go_to_diagnostic);
258 register_action(view, cx, Editor::go_to_prev_diagnostic);
259 register_action(view, cx, Editor::go_to_hunk);
260 register_action(view, cx, Editor::go_to_prev_hunk);
261 register_action(view, cx, Editor::go_to_definition);
262 register_action(view, cx, Editor::go_to_definition_split);
263 register_action(view, cx, Editor::go_to_implementation);
264 register_action(view, cx, Editor::go_to_implementation_split);
265 register_action(view, cx, Editor::go_to_type_definition);
266 register_action(view, cx, Editor::go_to_type_definition_split);
267 register_action(view, cx, Editor::open_url);
268 register_action(view, cx, Editor::fold);
269 register_action(view, cx, Editor::fold_at);
270 register_action(view, cx, Editor::unfold_lines);
271 register_action(view, cx, Editor::unfold_at);
272 register_action(view, cx, Editor::fold_selected_ranges);
273 register_action(view, cx, Editor::show_completions);
274 register_action(view, cx, Editor::toggle_code_actions);
275 register_action(view, cx, Editor::open_excerpts);
276 register_action(view, cx, Editor::open_excerpts_in_split);
277 register_action(view, cx, Editor::toggle_soft_wrap);
278 register_action(view, cx, Editor::toggle_line_numbers);
279 register_action(view, cx, Editor::toggle_inlay_hints);
280 register_action(view, cx, hover_popover::hover);
281 register_action(view, cx, Editor::reveal_in_finder);
282 register_action(view, cx, Editor::copy_path);
283 register_action(view, cx, Editor::copy_relative_path);
284 register_action(view, cx, Editor::copy_highlight_json);
285 register_action(view, cx, Editor::copy_permalink_to_line);
286 register_action(view, cx, Editor::open_permalink_to_line);
287 register_action(view, cx, |editor, action, cx| {
288 if let Some(task) = editor.format(action, cx) {
289 task.detach_and_log_err(cx);
290 } else {
291 cx.propagate();
292 }
293 });
294 register_action(view, cx, Editor::restart_language_server);
295 register_action(view, cx, Editor::show_character_palette);
296 register_action(view, cx, |editor, action, cx| {
297 if let Some(task) = editor.confirm_completion(action, cx) {
298 task.detach_and_log_err(cx);
299 } else {
300 cx.propagate();
301 }
302 });
303 register_action(view, cx, |editor, action, cx| {
304 if let Some(task) = editor.confirm_code_action(action, cx) {
305 task.detach_and_log_err(cx);
306 } else {
307 cx.propagate();
308 }
309 });
310 register_action(view, cx, |editor, action, cx| {
311 if let Some(task) = editor.rename(action, cx) {
312 task.detach_and_log_err(cx);
313 } else {
314 cx.propagate();
315 }
316 });
317 register_action(view, cx, |editor, action, cx| {
318 if let Some(task) = editor.confirm_rename(action, cx) {
319 task.detach_and_log_err(cx);
320 } else {
321 cx.propagate();
322 }
323 });
324 register_action(view, cx, |editor, action, cx| {
325 if let Some(task) = editor.find_all_references(action, cx) {
326 task.detach_and_log_err(cx);
327 } else {
328 cx.propagate();
329 }
330 });
331 register_action(view, cx, Editor::next_copilot_suggestion);
332 register_action(view, cx, Editor::previous_copilot_suggestion);
333 register_action(view, cx, Editor::copilot_suggest);
334 register_action(view, cx, Editor::context_menu_first);
335 register_action(view, cx, Editor::context_menu_prev);
336 register_action(view, cx, Editor::context_menu_next);
337 register_action(view, cx, Editor::context_menu_last);
338 register_action(view, cx, Editor::display_cursor_names);
339 register_action(view, cx, Editor::unique_lines_case_insensitive);
340 register_action(view, cx, Editor::unique_lines_case_sensitive);
341 register_action(view, cx, Editor::accept_partial_copilot_suggestion);
342 }
343
344 fn register_key_listeners(
345 &self,
346 cx: &mut ElementContext,
347 text_bounds: Bounds<Pixels>,
348 layout: &LayoutState,
349 ) {
350 let position_map = layout.position_map.clone();
351 let stacking_order = cx.stacking_order().clone();
352 cx.on_key_event({
353 let editor = self.editor.clone();
354 move |event: &ModifiersChangedEvent, phase, cx| {
355 if phase != DispatchPhase::Bubble {
356 return;
357 }
358
359 editor.update(cx, |editor, cx| {
360 Self::modifiers_changed(
361 editor,
362 event,
363 &position_map,
364 text_bounds,
365 &stacking_order,
366 cx,
367 )
368 })
369 }
370 });
371 }
372
373 fn modifiers_changed(
374 editor: &mut Editor,
375 event: &ModifiersChangedEvent,
376 position_map: &PositionMap,
377 text_bounds: Bounds<Pixels>,
378 stacking_order: &StackingOrder,
379 cx: &mut ViewContext<Editor>,
380 ) {
381 let mouse_position = cx.mouse_position();
382 if !text_bounds.contains(&mouse_position)
383 || !cx.was_top_layer(&mouse_position, stacking_order)
384 {
385 return;
386 }
387
388 editor.update_hovered_link(
389 position_map.point_for_position(text_bounds, mouse_position),
390 &position_map.snapshot,
391 event.modifiers,
392 cx,
393 )
394 }
395
396 fn mouse_left_down(
397 editor: &mut Editor,
398 event: &MouseDownEvent,
399 position_map: &PositionMap,
400 text_bounds: Bounds<Pixels>,
401 gutter_bounds: Bounds<Pixels>,
402 stacking_order: &StackingOrder,
403 cx: &mut ViewContext<Editor>,
404 ) {
405 let mut click_count = event.click_count;
406 let modifiers = event.modifiers;
407
408 if cx.default_prevented() {
409 return;
410 } else if gutter_bounds.contains(&event.position) {
411 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
412 } else if !text_bounds.contains(&event.position) {
413 return;
414 }
415 if !cx.was_top_layer(&event.position, stacking_order) {
416 return;
417 }
418
419 let point_for_position = position_map.point_for_position(text_bounds, event.position);
420 let position = point_for_position.previous_valid;
421 if modifiers.shift && modifiers.alt {
422 editor.select(
423 SelectPhase::BeginColumnar {
424 position,
425 goal_column: point_for_position.exact_unclipped.column(),
426 },
427 cx,
428 );
429 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
430 editor.select(
431 SelectPhase::Extend {
432 position,
433 click_count,
434 },
435 cx,
436 );
437 } else {
438 editor.select(
439 SelectPhase::Begin {
440 position,
441 add: modifiers.alt,
442 click_count,
443 },
444 cx,
445 );
446 }
447
448 cx.stop_propagation();
449 }
450
451 fn mouse_right_down(
452 editor: &mut Editor,
453 event: &MouseDownEvent,
454 position_map: &PositionMap,
455 text_bounds: Bounds<Pixels>,
456 cx: &mut ViewContext<Editor>,
457 ) {
458 if !text_bounds.contains(&event.position) {
459 return;
460 }
461 let point_for_position = position_map.point_for_position(text_bounds, event.position);
462 mouse_context_menu::deploy_context_menu(
463 editor,
464 event.position,
465 point_for_position.previous_valid,
466 cx,
467 );
468 cx.stop_propagation();
469 }
470
471 fn mouse_up(
472 editor: &mut Editor,
473 event: &MouseUpEvent,
474 position_map: &PositionMap,
475 text_bounds: Bounds<Pixels>,
476 interactive_bounds: &InteractiveBounds,
477 stacking_order: &StackingOrder,
478 cx: &mut ViewContext<Editor>,
479 ) {
480 let end_selection = editor.has_pending_selection();
481 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
482
483 if end_selection {
484 editor.select(SelectPhase::End, cx);
485 }
486
487 if interactive_bounds.visibly_contains(&event.position, cx)
488 && !pending_nonempty_selections
489 && event.modifiers.command
490 && text_bounds.contains(&event.position)
491 && cx.was_top_layer(&event.position, stacking_order)
492 {
493 let point = position_map.point_for_position(text_bounds, event.position);
494 editor.handle_click_hovered_link(point, event.modifiers, cx);
495
496 cx.stop_propagation();
497 } else if end_selection {
498 cx.stop_propagation();
499 }
500 }
501
502 fn mouse_dragged(
503 editor: &mut Editor,
504 event: &MouseMoveEvent,
505 position_map: &PositionMap,
506 text_bounds: Bounds<Pixels>,
507 _gutter_bounds: Bounds<Pixels>,
508 _stacking_order: &StackingOrder,
509 cx: &mut ViewContext<Editor>,
510 ) {
511 if !editor.has_pending_selection() {
512 return;
513 }
514
515 let point_for_position = position_map.point_for_position(text_bounds, event.position);
516 let mut scroll_delta = gpui::Point::<f32>::default();
517 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
518 let top = text_bounds.origin.y + vertical_margin;
519 let bottom = text_bounds.lower_left().y - vertical_margin;
520 if event.position.y < top {
521 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
522 }
523 if event.position.y > bottom {
524 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
525 }
526
527 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
528 let left = text_bounds.origin.x + horizontal_margin;
529 let right = text_bounds.upper_right().x - horizontal_margin;
530 if event.position.x < left {
531 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
532 }
533 if event.position.x > right {
534 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
535 }
536
537 editor.select(
538 SelectPhase::Update {
539 position: point_for_position.previous_valid,
540 goal_column: point_for_position.exact_unclipped.column(),
541 scroll_delta,
542 },
543 cx,
544 );
545 }
546
547 fn mouse_moved(
548 editor: &mut Editor,
549 event: &MouseMoveEvent,
550 position_map: &PositionMap,
551 text_bounds: Bounds<Pixels>,
552 gutter_bounds: Bounds<Pixels>,
553 stacking_order: &StackingOrder,
554 cx: &mut ViewContext<Editor>,
555 ) {
556 let modifiers = event.modifiers;
557 let text_hovered = text_bounds.contains(&event.position);
558 let gutter_hovered = gutter_bounds.contains(&event.position);
559 let was_top = cx.was_top_layer(&event.position, stacking_order);
560
561 editor.set_gutter_hovered(gutter_hovered, cx);
562
563 // Don't trigger hover popover if mouse is hovering over context menu
564 if text_hovered && was_top {
565 let point_for_position = position_map.point_for_position(text_bounds, event.position);
566
567 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
568
569 if let Some(point) = point_for_position.as_valid() {
570 hover_at(editor, Some(point), cx);
571 Self::update_visible_cursor(editor, point, position_map, cx);
572 }
573 } else {
574 editor.hide_hovered_link(cx);
575 hover_at(editor, None, cx);
576 if gutter_hovered && was_top {
577 cx.stop_propagation();
578 }
579 }
580 }
581
582 fn update_visible_cursor(
583 editor: &mut Editor,
584 point: DisplayPoint,
585 position_map: &PositionMap,
586 cx: &mut ViewContext<Editor>,
587 ) {
588 let snapshot = &position_map.snapshot;
589 let Some(hub) = editor.collaboration_hub() else {
590 return;
591 };
592 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
593 ..DisplayPoint::new(
594 point.row(),
595 (point.column() + 1).min(snapshot.line_len(point.row())),
596 );
597
598 let range = snapshot
599 .buffer_snapshot
600 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
601 ..snapshot
602 .buffer_snapshot
603 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
604
605 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
606 return;
607 };
608 let key = crate::HoveredCursor {
609 replica_id: selection.replica_id,
610 selection_id: selection.selection.id,
611 };
612 editor.hovered_cursors.insert(
613 key.clone(),
614 cx.spawn(|editor, mut cx| async move {
615 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
616 editor
617 .update(&mut cx, |editor, cx| {
618 editor.hovered_cursors.remove(&key);
619 cx.notify();
620 })
621 .ok();
622 }),
623 );
624 cx.notify()
625 }
626
627 fn paint_background(
628 &self,
629 gutter_bounds: Bounds<Pixels>,
630 text_bounds: Bounds<Pixels>,
631 layout: &LayoutState,
632 cx: &mut ElementContext,
633 ) {
634 let bounds = gutter_bounds.union(&text_bounds);
635 let scroll_top =
636 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
637 let gutter_bg = cx.theme().colors().editor_gutter_background;
638 cx.paint_quad(fill(gutter_bounds, gutter_bg));
639 cx.paint_quad(fill(text_bounds, self.style.background));
640
641 if let EditorMode::Full = layout.mode {
642 let mut active_rows = layout.active_rows.iter().peekable();
643 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
644 let mut end_row = *start_row;
645 while active_rows.peek().map_or(false, |r| {
646 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
647 }) {
648 active_rows.next().unwrap();
649 end_row += 1;
650 }
651
652 if !contains_non_empty_selection {
653 let origin = point(
654 bounds.origin.x,
655 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
656 - scroll_top,
657 );
658 let size = size(
659 bounds.size.width,
660 layout.position_map.line_height * (end_row - start_row + 1) as f32,
661 );
662 let active_line_bg = cx.theme().colors().editor_active_line_background;
663 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
664 }
665 }
666
667 if let Some(highlighted_rows) = &layout.highlighted_rows {
668 let origin = point(
669 bounds.origin.x,
670 bounds.origin.y
671 + (layout.position_map.line_height * highlighted_rows.start as f32)
672 - scroll_top,
673 );
674 let size = size(
675 bounds.size.width,
676 layout.position_map.line_height * highlighted_rows.len() as f32,
677 );
678 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
679 cx.paint_quad(fill(Bounds { origin, size }, highlighted_line_bg));
680 }
681
682 let scroll_left =
683 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
684
685 for (wrap_position, active) in layout.wrap_guides.iter() {
686 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
687 - scroll_left;
688
689 if x < text_bounds.origin.x
690 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
691 {
692 continue;
693 }
694
695 let color = if *active {
696 cx.theme().colors().editor_active_wrap_guide
697 } else {
698 cx.theme().colors().editor_wrap_guide
699 };
700 cx.paint_quad(fill(
701 Bounds {
702 origin: point(x, text_bounds.origin.y),
703 size: size(px(1.), text_bounds.size.height),
704 },
705 color,
706 ));
707 }
708 }
709 }
710
711 fn paint_gutter(
712 &mut self,
713 bounds: Bounds<Pixels>,
714 layout: &mut LayoutState,
715 cx: &mut ElementContext,
716 ) {
717 let line_height = layout.position_map.line_height;
718
719 let scroll_position = layout.position_map.snapshot.scroll_position();
720 let scroll_top = scroll_position.y * line_height;
721
722 if bounds.contains(&cx.mouse_position()) {
723 let stacking_order = cx.stacking_order().clone();
724 cx.set_cursor_style(CursorStyle::Arrow, stacking_order);
725 }
726
727 let show_git_gutter = matches!(
728 ProjectSettings::get_global(cx).git.git_gutter,
729 Some(GitGutterSetting::TrackedFiles)
730 );
731
732 if show_git_gutter {
733 Self::paint_diff_hunks(bounds, layout, cx);
734 }
735
736 let gutter_settings = EditorSettings::get_global(cx).gutter;
737
738 for (ix, line) in layout.line_numbers.iter().enumerate() {
739 if let Some(line) = line {
740 let line_origin = bounds.origin
741 + point(
742 bounds.size.width - line.width - layout.gutter_dimensions.right_padding,
743 ix as f32 * line_height - (scroll_top % line_height),
744 );
745
746 line.paint(line_origin, line_height, cx).log_err();
747 }
748 }
749
750 cx.with_z_index(1, |cx| {
751 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
752 if let Some(fold_indicator) = fold_indicator {
753 debug_assert!(gutter_settings.folds);
754 let mut fold_indicator = fold_indicator.into_any_element();
755 let available_space = size(
756 AvailableSpace::MinContent,
757 AvailableSpace::Definite(line_height * 0.55),
758 );
759 let fold_indicator_size = fold_indicator.measure(available_space, cx);
760
761 let position = point(
762 bounds.size.width - layout.gutter_dimensions.right_padding,
763 ix as f32 * line_height - (scroll_top % line_height),
764 );
765 let centering_offset = point(
766 (layout.gutter_dimensions.right_padding + layout.gutter_dimensions.margin
767 - fold_indicator_size.width)
768 / 2.,
769 (line_height - fold_indicator_size.height) / 2.,
770 );
771 let origin = bounds.origin + position + centering_offset;
772 fold_indicator.draw(origin, available_space, cx);
773 }
774 }
775
776 if let Some(indicator) = layout.code_actions_indicator.take() {
777 debug_assert!(gutter_settings.code_actions);
778 let mut button = indicator.button.into_any_element();
779 let available_space = size(
780 AvailableSpace::MinContent,
781 AvailableSpace::Definite(line_height),
782 );
783 let indicator_size = button.measure(available_space, cx);
784
785 let mut x = Pixels::ZERO;
786 let mut y = indicator.row as f32 * line_height - scroll_top;
787 // Center indicator.
788 x += (layout.gutter_dimensions.margin + layout.gutter_dimensions.left_padding
789 - indicator_size.width)
790 / 2.;
791 y += (line_height - indicator_size.height) / 2.;
792
793 button.draw(bounds.origin + point(x, y), available_space, cx);
794 }
795 });
796 }
797
798 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut ElementContext) {
799 let line_height = layout.position_map.line_height;
800
801 let scroll_position = layout.position_map.snapshot.scroll_position();
802 let scroll_top = scroll_position.y * line_height;
803
804 for hunk in &layout.display_hunks {
805 let (display_row_range, status) = match hunk {
806 //TODO: This rendering is entirely a horrible hack
807 &DisplayDiffHunk::Folded { display_row: row } => {
808 let start_y = row as f32 * line_height - scroll_top;
809 let end_y = start_y + line_height;
810
811 let width = 0.275 * line_height;
812 let highlight_origin = bounds.origin + point(-width, start_y);
813 let highlight_size = size(width * 2., end_y - start_y);
814 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
815 cx.paint_quad(quad(
816 highlight_bounds,
817 Corners::all(1. * line_height),
818 cx.theme().status().modified,
819 Edges::default(),
820 transparent_black(),
821 ));
822
823 continue;
824 }
825
826 DisplayDiffHunk::Unfolded {
827 display_row_range,
828 status,
829 } => (display_row_range, status),
830 };
831
832 let color = match status {
833 DiffHunkStatus::Added => cx.theme().status().created,
834 DiffHunkStatus::Modified => cx.theme().status().modified,
835
836 //TODO: This rendering is entirely a horrible hack
837 DiffHunkStatus::Removed => {
838 let row = display_row_range.start;
839
840 let offset = line_height / 2.;
841 let start_y = row as f32 * line_height - offset - scroll_top;
842 let end_y = start_y + line_height;
843
844 let width = 0.275 * line_height;
845 let highlight_origin = bounds.origin + point(-width, start_y);
846 let highlight_size = size(width * 2., end_y - start_y);
847 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
848 cx.paint_quad(quad(
849 highlight_bounds,
850 Corners::all(1. * line_height),
851 cx.theme().status().deleted,
852 Edges::default(),
853 transparent_black(),
854 ));
855
856 continue;
857 }
858 };
859
860 let start_row = display_row_range.start;
861 let end_row = display_row_range.end;
862 // If we're in a multibuffer, row range span might include an
863 // excerpt header, so if we were to draw the marker straight away,
864 // the hunk might include the rows of that header.
865 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
866 // Instead, we simply check whether the range we're dealing with includes
867 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
868 let end_row_in_current_excerpt = layout
869 .position_map
870 .snapshot
871 .blocks_in_range(start_row..end_row)
872 .find_map(|(start_row, block)| {
873 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
874 Some(start_row)
875 } else {
876 None
877 }
878 })
879 .unwrap_or(end_row);
880
881 let start_y = start_row as f32 * line_height - scroll_top;
882 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
883
884 let width = 0.275 * line_height;
885 let highlight_origin = bounds.origin + point(-width, start_y);
886 let highlight_size = size(width * 2., end_y - start_y);
887 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
888 cx.paint_quad(quad(
889 highlight_bounds,
890 Corners::all(0.05 * line_height),
891 color,
892 Edges::default(),
893 transparent_black(),
894 ));
895 }
896 }
897
898 fn paint_text(
899 &mut self,
900 text_bounds: Bounds<Pixels>,
901 layout: &mut LayoutState,
902 cx: &mut ElementContext,
903 ) {
904 let start_row = layout.visible_display_row_range.start;
905 // Offset the content_bounds from the text_bounds by the gutter margin (which is roughly half a character wide) to make hit testing work more like how we want.
906 let content_origin =
907 text_bounds.origin + point(layout.gutter_dimensions.margin, Pixels::ZERO);
908 let line_end_overshoot = 0.15 * layout.position_map.line_height;
909 let whitespace_setting = self
910 .editor
911 .read(cx)
912 .buffer
913 .read(cx)
914 .settings_at(0, cx)
915 .show_whitespaces;
916
917 cx.with_content_mask(
918 Some(ContentMask {
919 bounds: text_bounds,
920 }),
921 |cx| {
922 let interactive_text_bounds = InteractiveBounds {
923 bounds: text_bounds,
924 stacking_order: cx.stacking_order().clone(),
925 };
926 if text_bounds.contains(&cx.mouse_position()) {
927 if self
928 .editor
929 .read(cx)
930 .hovered_link_state
931 .as_ref()
932 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
933 {
934 cx.set_cursor_style(
935 CursorStyle::PointingHand,
936 interactive_text_bounds.stacking_order.clone(),
937 );
938 } else {
939 cx.set_cursor_style(
940 CursorStyle::IBeam,
941 interactive_text_bounds.stacking_order.clone(),
942 );
943 }
944 }
945
946 let fold_corner_radius = 0.15 * layout.position_map.line_height;
947 cx.with_element_id(Some("folds"), |cx| {
948 let snapshot = &layout.position_map.snapshot;
949
950 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
951 let fold_range = fold.range.clone();
952 let display_range = fold.range.start.to_display_point(&snapshot)
953 ..fold.range.end.to_display_point(&snapshot);
954 debug_assert_eq!(display_range.start.row(), display_range.end.row());
955 let row = display_range.start.row();
956 debug_assert!(row < layout.visible_display_row_range.end);
957 let Some(line_layout) = &layout
958 .position_map
959 .line_layouts
960 .get((row - layout.visible_display_row_range.start) as usize)
961 .map(|l| &l.line)
962 else {
963 continue;
964 };
965
966 let start_x = content_origin.x
967 + line_layout.x_for_index(display_range.start.column() as usize)
968 - layout.position_map.scroll_position.x;
969 let start_y = content_origin.y
970 + row as f32 * layout.position_map.line_height
971 - layout.position_map.scroll_position.y;
972 let end_x = content_origin.x
973 + line_layout.x_for_index(display_range.end.column() as usize)
974 - layout.position_map.scroll_position.x;
975
976 let fold_bounds = Bounds {
977 origin: point(start_x, start_y),
978 size: size(end_x - start_x, layout.position_map.line_height),
979 };
980
981 let fold_background = cx.with_z_index(1, |cx| {
982 div()
983 .id(fold.id)
984 .size_full()
985 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
986 .on_click(cx.listener_for(
987 &self.editor,
988 move |editor: &mut Editor, _, cx| {
989 editor.unfold_ranges(
990 [fold_range.start..fold_range.end],
991 true,
992 false,
993 cx,
994 );
995 cx.stop_propagation();
996 },
997 ))
998 .draw_and_update_state(
999 fold_bounds.origin,
1000 fold_bounds.size,
1001 cx,
1002 |fold_element_state, cx| {
1003 if fold_element_state.is_active() {
1004 cx.theme().colors().ghost_element_active
1005 } else if fold_bounds.contains(&cx.mouse_position()) {
1006 cx.theme().colors().ghost_element_hover
1007 } else {
1008 cx.theme().colors().ghost_element_background
1009 }
1010 },
1011 )
1012 });
1013
1014 self.paint_highlighted_range(
1015 display_range.clone(),
1016 fold_background,
1017 fold_corner_radius,
1018 fold_corner_radius * 2.,
1019 layout,
1020 content_origin,
1021 text_bounds,
1022 cx,
1023 );
1024 }
1025 });
1026
1027 for (range, color) in &layout.highlighted_ranges {
1028 self.paint_highlighted_range(
1029 range.clone(),
1030 *color,
1031 Pixels::ZERO,
1032 line_end_overshoot,
1033 layout,
1034 content_origin,
1035 text_bounds,
1036 cx,
1037 );
1038 }
1039
1040 let mut cursors = SmallVec::<[Cursor; 32]>::new();
1041 let corner_radius = 0.15 * layout.position_map.line_height;
1042 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
1043
1044 for (participant_ix, (player_color, selections)) in
1045 layout.selections.iter().enumerate()
1046 {
1047 for selection in selections.into_iter() {
1048 self.paint_highlighted_range(
1049 selection.range.clone(),
1050 player_color.selection,
1051 corner_radius,
1052 corner_radius * 2.,
1053 layout,
1054 content_origin,
1055 text_bounds,
1056 cx,
1057 );
1058
1059 if selection.is_local && !selection.range.is_empty() {
1060 invisible_display_ranges.push(selection.range.clone());
1061 }
1062
1063 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
1064 let cursor_position = selection.head;
1065 if layout
1066 .visible_display_row_range
1067 .contains(&cursor_position.row())
1068 {
1069 let cursor_row_layout = &layout.position_map.line_layouts
1070 [(cursor_position.row() - start_row) as usize]
1071 .line;
1072 let cursor_column = cursor_position.column() as usize;
1073
1074 let cursor_character_x =
1075 cursor_row_layout.x_for_index(cursor_column);
1076 let mut block_width = cursor_row_layout
1077 .x_for_index(cursor_column + 1)
1078 - cursor_character_x;
1079 if block_width == Pixels::ZERO {
1080 block_width = layout.position_map.em_width;
1081 }
1082 let block_text = if let CursorShape::Block = selection.cursor_shape
1083 {
1084 layout
1085 .position_map
1086 .snapshot
1087 .chars_at(cursor_position)
1088 .next()
1089 .and_then(|(character, _)| {
1090 let text = if character == '\n' {
1091 SharedString::from(" ")
1092 } else {
1093 SharedString::from(character.to_string())
1094 };
1095 let len = text.len();
1096 cx.text_system()
1097 .shape_line(
1098 text,
1099 cursor_row_layout.font_size,
1100 &[TextRun {
1101 len,
1102 font: self.style.text.font(),
1103 color: self.style.background,
1104 background_color: None,
1105 strikethrough: None,
1106 underline: None,
1107 }],
1108 )
1109 .log_err()
1110 })
1111 } else {
1112 None
1113 };
1114
1115 let x = cursor_character_x - layout.position_map.scroll_position.x;
1116 let y = cursor_position.row() as f32
1117 * layout.position_map.line_height
1118 - layout.position_map.scroll_position.y;
1119 if selection.is_newest {
1120 self.editor.update(cx, |editor, _| {
1121 editor.pixel_position_of_newest_cursor = Some(point(
1122 text_bounds.origin.x + x + block_width / 2.,
1123 text_bounds.origin.y
1124 + y
1125 + layout.position_map.line_height / 2.,
1126 ))
1127 });
1128 }
1129
1130 cursors.push(Cursor {
1131 color: player_color.cursor,
1132 block_width,
1133 origin: point(x, y),
1134 line_height: layout.position_map.line_height,
1135 shape: selection.cursor_shape,
1136 block_text,
1137 cursor_name: selection.user_name.clone().map(|name| {
1138 CursorName {
1139 string: name,
1140 color: self.style.background,
1141 is_top_row: cursor_position.row() == 0,
1142 z_index: (participant_ix % 256).try_into().unwrap(),
1143 }
1144 }),
1145 });
1146 }
1147 }
1148 }
1149 }
1150
1151 for (ix, line_with_invisibles) in
1152 layout.position_map.line_layouts.iter().enumerate()
1153 {
1154 let row = start_row + ix as u32;
1155 line_with_invisibles.draw(
1156 layout,
1157 row,
1158 content_origin,
1159 whitespace_setting,
1160 &invisible_display_ranges,
1161 cx,
1162 )
1163 }
1164
1165 cx.with_z_index(0, |cx| self.paint_redactions(text_bounds, &layout, cx));
1166
1167 cx.with_z_index(1, |cx| {
1168 for cursor in cursors {
1169 cursor.paint(content_origin, cx);
1170 }
1171 });
1172 },
1173 )
1174 }
1175
1176 fn paint_redactions(
1177 &mut self,
1178 text_bounds: Bounds<Pixels>,
1179 layout: &LayoutState,
1180 cx: &mut ElementContext,
1181 ) {
1182 let content_origin =
1183 text_bounds.origin + point(layout.gutter_dimensions.margin, Pixels::ZERO);
1184 let line_end_overshoot = layout.line_end_overshoot();
1185
1186 // A softer than perfect black
1187 let redaction_color = gpui::rgb(0x0e1111);
1188
1189 for range in layout.redacted_ranges.iter() {
1190 self.paint_highlighted_range(
1191 range.clone(),
1192 redaction_color.into(),
1193 Pixels::ZERO,
1194 line_end_overshoot,
1195 layout,
1196 content_origin,
1197 text_bounds,
1198 cx,
1199 );
1200 }
1201 }
1202
1203 fn paint_overlays(
1204 &mut self,
1205 text_bounds: Bounds<Pixels>,
1206 layout: &mut LayoutState,
1207 cx: &mut ElementContext,
1208 ) {
1209 let content_origin =
1210 text_bounds.origin + point(layout.gutter_dimensions.margin, Pixels::ZERO);
1211 let start_row = layout.visible_display_row_range.start;
1212 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1213 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1214 let context_menu_size = context_menu.measure(available_space, cx);
1215
1216 let cursor_row_layout =
1217 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1218 let x = cursor_row_layout.x_for_index(position.column() as usize)
1219 - layout.position_map.scroll_position.x;
1220 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1221 - layout.position_map.scroll_position.y;
1222 let mut list_origin = content_origin + point(x, y);
1223 let list_width = context_menu_size.width;
1224 let list_height = context_menu_size.height;
1225
1226 // Snap the right edge of the list to the right edge of the window if
1227 // its horizontal bounds overflow.
1228 if list_origin.x + list_width > cx.viewport_size().width {
1229 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1230 }
1231
1232 if list_origin.y + list_height > text_bounds.lower_right().y {
1233 list_origin.y -= layout.position_map.line_height + list_height;
1234 }
1235
1236 cx.break_content_mask(|cx| context_menu.draw(list_origin, available_space, cx));
1237 }
1238
1239 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1240 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1241
1242 // This is safe because we check on layout whether the required row is available
1243 let hovered_row_layout =
1244 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1245
1246 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1247 // height. This is the size we will use to decide whether to render popovers above or below
1248 // the hovered line.
1249 let first_size = hover_popovers[0].measure(available_space, cx);
1250 let height_to_reserve =
1251 first_size.height + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1252
1253 // Compute Hovered Point
1254 let x = hovered_row_layout.x_for_index(position.column() as usize)
1255 - layout.position_map.scroll_position.x;
1256 let y = position.row() as f32 * layout.position_map.line_height
1257 - layout.position_map.scroll_position.y;
1258 let hovered_point = content_origin + point(x, y);
1259
1260 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1261 // There is enough space above. Render popovers above the hovered point
1262 let mut current_y = hovered_point.y;
1263 for mut hover_popover in hover_popovers {
1264 let size = hover_popover.measure(available_space, cx);
1265 let mut popover_origin = point(hovered_point.x, current_y - size.height);
1266
1267 let x_out_of_bounds =
1268 text_bounds.upper_right().x - (popover_origin.x + size.width);
1269 if x_out_of_bounds < Pixels::ZERO {
1270 popover_origin.x = popover_origin.x + x_out_of_bounds;
1271 }
1272
1273 if cx.was_top_layer(&popover_origin, cx.stacking_order()) {
1274 cx.break_content_mask(|cx| {
1275 hover_popover.draw(popover_origin, available_space, cx)
1276 });
1277 }
1278
1279 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1280 }
1281 } else {
1282 // There is not enough space above. Render popovers below the hovered point
1283 let mut current_y = hovered_point.y + layout.position_map.line_height;
1284 for mut hover_popover in hover_popovers {
1285 let size = hover_popover.measure(available_space, cx);
1286 let mut popover_origin = point(hovered_point.x, current_y);
1287
1288 let x_out_of_bounds =
1289 text_bounds.upper_right().x - (popover_origin.x + size.width);
1290 if x_out_of_bounds < Pixels::ZERO {
1291 popover_origin.x = popover_origin.x + x_out_of_bounds;
1292 }
1293
1294 hover_popover.draw(popover_origin, available_space, cx);
1295
1296 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1297 }
1298 }
1299 }
1300
1301 if let Some(mouse_context_menu) = self.editor.read(cx).mouse_context_menu.as_ref() {
1302 let element = overlay()
1303 .position(mouse_context_menu.position)
1304 .child(mouse_context_menu.context_menu.clone())
1305 .anchor(AnchorCorner::TopLeft)
1306 .snap_to_window();
1307 element.into_any().draw(
1308 gpui::Point::default(),
1309 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1310 cx,
1311 );
1312 }
1313 }
1314
1315 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1316 bounds.upper_right().x - self.style.scrollbar_width
1317 }
1318
1319 fn paint_scrollbar(
1320 &mut self,
1321 bounds: Bounds<Pixels>,
1322 layout: &mut LayoutState,
1323 cx: &mut ElementContext,
1324 ) {
1325 if layout.mode != EditorMode::Full {
1326 return;
1327 }
1328
1329 // If a drag took place after we started dragging the scrollbar,
1330 // cancel the scrollbar drag.
1331 if cx.has_active_drag() {
1332 self.editor.update(cx, |editor, cx| {
1333 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1334 });
1335 }
1336
1337 let top = bounds.origin.y;
1338 let bottom = bounds.lower_left().y;
1339 let right = bounds.lower_right().x;
1340 let left = self.scrollbar_left(&bounds);
1341 let row_range = layout.scrollbar_row_range.clone();
1342 let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1343
1344 let mut height = bounds.size.height;
1345 let mut first_row_y_offset = px(0.0);
1346
1347 // Impose a minimum height on the scrollbar thumb
1348 let row_height = height / max_row;
1349 let min_thumb_height = layout.position_map.line_height;
1350 let thumb_height = (row_range.end - row_range.start) * row_height;
1351 if thumb_height < min_thumb_height {
1352 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1353 height -= min_thumb_height - thumb_height;
1354 }
1355
1356 let y_for_row = |row: f32| -> Pixels { top + first_row_y_offset + row * row_height };
1357
1358 let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1359 let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1360 let track_bounds = Bounds::from_corners(point(left, top), point(right, bottom));
1361 let thumb_bounds = Bounds::from_corners(point(left, thumb_top), point(right, thumb_bottom));
1362
1363 if layout.show_scrollbars {
1364 cx.paint_quad(quad(
1365 track_bounds,
1366 Corners::default(),
1367 cx.theme().colors().scrollbar_track_background,
1368 Edges {
1369 top: Pixels::ZERO,
1370 right: Pixels::ZERO,
1371 bottom: Pixels::ZERO,
1372 left: px(1.),
1373 },
1374 cx.theme().colors().scrollbar_track_border,
1375 ));
1376 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1377 if layout.is_singleton && scrollbar_settings.selections {
1378 let start_anchor = Anchor::min();
1379 let end_anchor = Anchor::max();
1380 let background_ranges = self
1381 .editor
1382 .read(cx)
1383 .background_highlight_row_ranges::<BufferSearchHighlights>(
1384 start_anchor..end_anchor,
1385 &layout.position_map.snapshot,
1386 50000,
1387 );
1388 for range in background_ranges {
1389 let start_y = y_for_row(range.start().row() as f32);
1390 let mut end_y = y_for_row(range.end().row() as f32);
1391 if end_y - start_y < px(1.) {
1392 end_y = start_y + px(1.);
1393 }
1394 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1395 cx.paint_quad(quad(
1396 bounds,
1397 Corners::default(),
1398 cx.theme().status().info,
1399 Edges {
1400 top: Pixels::ZERO,
1401 right: px(1.),
1402 bottom: Pixels::ZERO,
1403 left: px(1.),
1404 },
1405 cx.theme().colors().scrollbar_thumb_border,
1406 ));
1407 }
1408 }
1409
1410 if layout.is_singleton && scrollbar_settings.symbols_selections {
1411 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
1412 Anchor::min()..Anchor::max(),
1413 &layout.position_map.snapshot,
1414 cx.theme().colors(),
1415 );
1416 for hunk in selection_ranges {
1417 let start_display = Point::new(hunk.0.start.row(), 0)
1418 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1419 let end_display = Point::new(hunk.0.end.row(), 0)
1420 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1421 let start_y = y_for_row(start_display.row() as f32);
1422 let mut end_y = if hunk.0.start == hunk.0.end {
1423 y_for_row((end_display.row() + 1) as f32)
1424 } else {
1425 y_for_row((end_display.row()) as f32)
1426 };
1427
1428 if end_y - start_y < px(1.) {
1429 end_y = start_y + px(1.);
1430 }
1431 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1432
1433 cx.paint_quad(quad(
1434 bounds,
1435 Corners::default(),
1436 cx.theme().status().info,
1437 Edges {
1438 top: Pixels::ZERO,
1439 right: px(1.),
1440 bottom: Pixels::ZERO,
1441 left: px(1.),
1442 },
1443 cx.theme().colors().scrollbar_thumb_border,
1444 ));
1445 }
1446 }
1447
1448 if layout.is_singleton && scrollbar_settings.git_diff {
1449 for hunk in layout
1450 .position_map
1451 .snapshot
1452 .buffer_snapshot
1453 .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1454 {
1455 let start_display = Point::new(hunk.buffer_range.start, 0)
1456 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1457 let end_display = Point::new(hunk.buffer_range.end, 0)
1458 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1459 let start_y = y_for_row(start_display.row() as f32);
1460 let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1461 y_for_row((end_display.row() + 1) as f32)
1462 } else {
1463 y_for_row((end_display.row()) as f32)
1464 };
1465
1466 if end_y - start_y < px(1.) {
1467 end_y = start_y + px(1.);
1468 }
1469 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1470
1471 let color = match hunk.status() {
1472 DiffHunkStatus::Added => cx.theme().status().created,
1473 DiffHunkStatus::Modified => cx.theme().status().modified,
1474 DiffHunkStatus::Removed => cx.theme().status().deleted,
1475 };
1476 cx.paint_quad(quad(
1477 bounds,
1478 Corners::default(),
1479 color,
1480 Edges {
1481 top: Pixels::ZERO,
1482 right: px(1.),
1483 bottom: Pixels::ZERO,
1484 left: px(1.),
1485 },
1486 cx.theme().colors().scrollbar_thumb_border,
1487 ));
1488 }
1489 }
1490
1491 if layout.is_singleton && scrollbar_settings.diagnostics {
1492 let max_point = layout
1493 .position_map
1494 .snapshot
1495 .display_snapshot
1496 .buffer_snapshot
1497 .max_point();
1498
1499 let diagnostics = layout
1500 .position_map
1501 .snapshot
1502 .buffer_snapshot
1503 .diagnostics_in_range::<_, Point>(Point::zero()..max_point, false)
1504 // We want to sort by severity, in order to paint the most severe diagnostics last.
1505 .sorted_by_key(|diagnostic| std::cmp::Reverse(diagnostic.diagnostic.severity));
1506
1507 for diagnostic in diagnostics {
1508 let start_display = diagnostic
1509 .range
1510 .start
1511 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1512 let end_display = diagnostic
1513 .range
1514 .end
1515 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1516 let start_y = y_for_row(start_display.row() as f32);
1517 let mut end_y = if diagnostic.range.start == diagnostic.range.end {
1518 y_for_row((end_display.row() + 1) as f32)
1519 } else {
1520 y_for_row((end_display.row()) as f32)
1521 };
1522
1523 if end_y - start_y < px(1.) {
1524 end_y = start_y + px(1.);
1525 }
1526 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1527
1528 let color = match diagnostic.diagnostic.severity {
1529 DiagnosticSeverity::ERROR => cx.theme().status().error,
1530 DiagnosticSeverity::WARNING => cx.theme().status().warning,
1531 DiagnosticSeverity::INFORMATION => cx.theme().status().info,
1532 _ => cx.theme().status().hint,
1533 };
1534 cx.paint_quad(quad(
1535 bounds,
1536 Corners::default(),
1537 color,
1538 Edges {
1539 top: Pixels::ZERO,
1540 right: px(1.),
1541 bottom: Pixels::ZERO,
1542 left: px(1.),
1543 },
1544 cx.theme().colors().scrollbar_thumb_border,
1545 ));
1546 }
1547 }
1548
1549 cx.paint_quad(quad(
1550 thumb_bounds,
1551 Corners::default(),
1552 cx.theme().colors().scrollbar_thumb_background,
1553 Edges {
1554 top: Pixels::ZERO,
1555 right: px(1.),
1556 bottom: Pixels::ZERO,
1557 left: px(1.),
1558 },
1559 cx.theme().colors().scrollbar_thumb_border,
1560 ));
1561 }
1562
1563 let interactive_track_bounds = InteractiveBounds {
1564 bounds: track_bounds,
1565 stacking_order: cx.stacking_order().clone(),
1566 };
1567 let mut mouse_position = cx.mouse_position();
1568 if track_bounds.contains(&mouse_position) {
1569 cx.set_cursor_style(
1570 CursorStyle::Arrow,
1571 interactive_track_bounds.stacking_order.clone(),
1572 );
1573 }
1574
1575 cx.on_mouse_event({
1576 let editor = self.editor.clone();
1577 move |event: &MouseMoveEvent, phase, cx| {
1578 if phase == DispatchPhase::Capture {
1579 return;
1580 }
1581
1582 editor.update(cx, |editor, cx| {
1583 if event.pressed_button == Some(MouseButton::Left)
1584 && editor.scroll_manager.is_dragging_scrollbar()
1585 {
1586 let y = mouse_position.y;
1587 let new_y = event.position.y;
1588 if (track_bounds.top()..track_bounds.bottom()).contains(&y) {
1589 let mut position = editor.scroll_position(cx);
1590 position.y += (new_y - y) * max_row / height;
1591 if position.y < 0.0 {
1592 position.y = 0.0;
1593 }
1594 editor.set_scroll_position(position, cx);
1595 }
1596
1597 mouse_position = event.position;
1598 cx.stop_propagation();
1599 } else {
1600 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1601 if interactive_track_bounds.visibly_contains(&event.position, cx) {
1602 editor.scroll_manager.show_scrollbar(cx);
1603 }
1604 }
1605 })
1606 }
1607 });
1608
1609 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
1610 cx.on_mouse_event({
1611 let editor = self.editor.clone();
1612 move |_: &MouseUpEvent, phase, cx| {
1613 if phase == DispatchPhase::Capture {
1614 return;
1615 }
1616
1617 editor.update(cx, |editor, cx| {
1618 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1619 cx.stop_propagation();
1620 });
1621 }
1622 });
1623 } else {
1624 cx.on_mouse_event({
1625 let editor = self.editor.clone();
1626 move |event: &MouseDownEvent, phase, cx| {
1627 if phase == DispatchPhase::Capture {
1628 return;
1629 }
1630
1631 editor.update(cx, |editor, cx| {
1632 if track_bounds.contains(&event.position) {
1633 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
1634
1635 let y = event.position.y;
1636 if y < thumb_top || thumb_bottom < y {
1637 let center_row = ((y - top) * max_row / height).round() as u32;
1638 let top_row = center_row
1639 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1640 let mut position = editor.scroll_position(cx);
1641 position.y = top_row as f32;
1642 editor.set_scroll_position(position, cx);
1643 } else {
1644 editor.scroll_manager.show_scrollbar(cx);
1645 }
1646
1647 cx.stop_propagation();
1648 }
1649 });
1650 }
1651 });
1652 }
1653 }
1654
1655 #[allow(clippy::too_many_arguments)]
1656 fn paint_highlighted_range(
1657 &self,
1658 range: Range<DisplayPoint>,
1659 color: Hsla,
1660 corner_radius: Pixels,
1661 line_end_overshoot: Pixels,
1662 layout: &LayoutState,
1663 content_origin: gpui::Point<Pixels>,
1664 bounds: Bounds<Pixels>,
1665 cx: &mut ElementContext,
1666 ) {
1667 let start_row = layout.visible_display_row_range.start;
1668 let end_row = layout.visible_display_row_range.end;
1669 if range.start != range.end {
1670 let row_range = if range.end.column() == 0 {
1671 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1672 } else {
1673 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1674 };
1675
1676 let highlighted_range = HighlightedRange {
1677 color,
1678 line_height: layout.position_map.line_height,
1679 corner_radius,
1680 start_y: content_origin.y
1681 + row_range.start as f32 * layout.position_map.line_height
1682 - layout.position_map.scroll_position.y,
1683 lines: row_range
1684 .into_iter()
1685 .map(|row| {
1686 let line_layout =
1687 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1688 HighlightedRangeLine {
1689 start_x: if row == range.start.row() {
1690 content_origin.x
1691 + line_layout.x_for_index(range.start.column() as usize)
1692 - layout.position_map.scroll_position.x
1693 } else {
1694 content_origin.x - layout.position_map.scroll_position.x
1695 },
1696 end_x: if row == range.end.row() {
1697 content_origin.x
1698 + line_layout.x_for_index(range.end.column() as usize)
1699 - layout.position_map.scroll_position.x
1700 } else {
1701 content_origin.x + line_layout.width + line_end_overshoot
1702 - layout.position_map.scroll_position.x
1703 },
1704 }
1705 })
1706 .collect(),
1707 };
1708
1709 highlighted_range.paint(bounds, cx);
1710 }
1711 }
1712
1713 fn paint_blocks(
1714 &mut self,
1715 bounds: Bounds<Pixels>,
1716 layout: &mut LayoutState,
1717 cx: &mut ElementContext,
1718 ) {
1719 let scroll_position = layout.position_map.snapshot.scroll_position();
1720 let scroll_left = scroll_position.x * layout.position_map.em_width;
1721 let scroll_top = scroll_position.y * layout.position_map.line_height;
1722
1723 for mut block in layout.blocks.drain(..) {
1724 let mut origin = bounds.origin
1725 + point(
1726 Pixels::ZERO,
1727 block.row as f32 * layout.position_map.line_height - scroll_top,
1728 );
1729 if !matches!(block.style, BlockStyle::Sticky) {
1730 origin += point(-scroll_left, Pixels::ZERO);
1731 }
1732 block.element.draw(origin, block.available_space, cx);
1733 }
1734 }
1735
1736 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1737 let style = &self.style;
1738 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1739 let layout = cx
1740 .text_system()
1741 .shape_line(
1742 SharedString::from(" ".repeat(column)),
1743 font_size,
1744 &[TextRun {
1745 len: column,
1746 font: style.text.font(),
1747 color: Hsla::default(),
1748 background_color: None,
1749 underline: None,
1750 strikethrough: None,
1751 }],
1752 )
1753 .unwrap();
1754
1755 layout.width
1756 }
1757
1758 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1759 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1760 self.column_pixels(digit_count, cx)
1761 }
1762
1763 //Folds contained in a hunk are ignored apart from shrinking visual size
1764 //If a fold contains any hunks then that fold line is marked as modified
1765 fn layout_git_gutters(
1766 &self,
1767 display_rows: Range<u32>,
1768 snapshot: &EditorSnapshot,
1769 ) -> Vec<DisplayDiffHunk> {
1770 let buffer_snapshot = &snapshot.buffer_snapshot;
1771
1772 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1773 .to_point(snapshot)
1774 .row;
1775 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1776 .to_point(snapshot)
1777 .row;
1778
1779 buffer_snapshot
1780 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1781 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1782 .dedup()
1783 .collect()
1784 }
1785
1786 fn calculate_relative_line_numbers(
1787 &self,
1788 snapshot: &EditorSnapshot,
1789 rows: &Range<u32>,
1790 relative_to: Option<u32>,
1791 ) -> HashMap<u32, u32> {
1792 let mut relative_rows: HashMap<u32, u32> = Default::default();
1793 let Some(relative_to) = relative_to else {
1794 return relative_rows;
1795 };
1796
1797 let start = rows.start.min(relative_to);
1798 let end = rows.end.max(relative_to);
1799
1800 let buffer_rows = snapshot
1801 .buffer_rows(start)
1802 .take(1 + (end - start) as usize)
1803 .collect::<Vec<_>>();
1804
1805 let head_idx = relative_to - start;
1806 let mut delta = 1;
1807 let mut i = head_idx + 1;
1808 while i < buffer_rows.len() as u32 {
1809 if buffer_rows[i as usize].is_some() {
1810 if rows.contains(&(i + start)) {
1811 relative_rows.insert(i + start, delta);
1812 }
1813 delta += 1;
1814 }
1815 i += 1;
1816 }
1817 delta = 1;
1818 i = head_idx.min(buffer_rows.len() as u32 - 1);
1819 while i > 0 && buffer_rows[i as usize].is_none() {
1820 i -= 1;
1821 }
1822
1823 while i > 0 {
1824 i -= 1;
1825 if buffer_rows[i as usize].is_some() {
1826 if rows.contains(&(i + start)) {
1827 relative_rows.insert(i + start, delta);
1828 }
1829 delta += 1;
1830 }
1831 }
1832
1833 relative_rows
1834 }
1835
1836 fn shape_line_numbers(
1837 &self,
1838 rows: Range<u32>,
1839 active_rows: &BTreeMap<u32, bool>,
1840 newest_selection_head: DisplayPoint,
1841 is_singleton: bool,
1842 snapshot: &EditorSnapshot,
1843 cx: &ViewContext<Editor>,
1844 ) -> (
1845 Vec<Option<ShapedLine>>,
1846 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1847 ) {
1848 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1849 let include_line_numbers =
1850 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full;
1851 let include_fold_statuses =
1852 EditorSettings::get_global(cx).gutter.folds && snapshot.mode == EditorMode::Full;
1853 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1854 let mut fold_statuses = Vec::with_capacity(rows.len());
1855 let mut line_number = String::new();
1856 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1857 let relative_to = if is_relative {
1858 Some(newest_selection_head.row())
1859 } else {
1860 None
1861 };
1862
1863 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1864
1865 for (ix, row) in snapshot
1866 .buffer_rows(rows.start)
1867 .take((rows.end - rows.start) as usize)
1868 .enumerate()
1869 {
1870 let display_row = rows.start + ix as u32;
1871 let (active, color) = if active_rows.contains_key(&display_row) {
1872 (true, cx.theme().colors().editor_active_line_number)
1873 } else {
1874 (false, cx.theme().colors().editor_line_number)
1875 };
1876 if let Some(buffer_row) = row {
1877 if include_line_numbers {
1878 line_number.clear();
1879 let default_number = buffer_row + 1;
1880 let number = relative_rows
1881 .get(&(ix as u32 + rows.start))
1882 .unwrap_or(&default_number);
1883 write!(&mut line_number, "{}", number).unwrap();
1884 let run = TextRun {
1885 len: line_number.len(),
1886 font: self.style.text.font(),
1887 color,
1888 background_color: None,
1889 underline: None,
1890 strikethrough: None,
1891 };
1892 let shaped_line = cx
1893 .text_system()
1894 .shape_line(line_number.clone().into(), font_size, &[run])
1895 .unwrap();
1896 shaped_line_numbers.push(Some(shaped_line));
1897 }
1898 if include_fold_statuses {
1899 fold_statuses.push(
1900 is_singleton
1901 .then(|| {
1902 snapshot
1903 .fold_for_line(buffer_row)
1904 .map(|fold_status| (fold_status, buffer_row, active))
1905 })
1906 .flatten(),
1907 )
1908 }
1909 } else {
1910 fold_statuses.push(None);
1911 shaped_line_numbers.push(None);
1912 }
1913 }
1914
1915 (shaped_line_numbers, fold_statuses)
1916 }
1917
1918 fn layout_lines(
1919 &self,
1920 rows: Range<u32>,
1921 line_number_layouts: &[Option<ShapedLine>],
1922 snapshot: &EditorSnapshot,
1923 cx: &mut ViewContext<Editor>,
1924 ) -> Vec<LineWithInvisibles> {
1925 if rows.start >= rows.end {
1926 return Vec::new();
1927 }
1928
1929 // Show the placeholder when the editor is empty
1930 if snapshot.is_empty() {
1931 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1932 let placeholder_color = cx.theme().colors().text_placeholder;
1933 let placeholder_text = snapshot.placeholder_text(cx);
1934
1935 let placeholder_lines = placeholder_text
1936 .as_ref()
1937 .map_or("", AsRef::as_ref)
1938 .split('\n')
1939 .skip(rows.start as usize)
1940 .chain(iter::repeat(""))
1941 .take(rows.len());
1942 placeholder_lines
1943 .filter_map(move |line| {
1944 let run = TextRun {
1945 len: line.len(),
1946 font: self.style.text.font(),
1947 color: placeholder_color,
1948 background_color: None,
1949 underline: Default::default(),
1950 strikethrough: None,
1951 };
1952 cx.text_system()
1953 .shape_line(line.to_string().into(), font_size, &[run])
1954 .log_err()
1955 })
1956 .map(|line| LineWithInvisibles {
1957 line,
1958 invisibles: Vec::new(),
1959 })
1960 .collect()
1961 } else {
1962 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1963 LineWithInvisibles::from_chunks(
1964 chunks,
1965 &self.style.text,
1966 MAX_LINE_LEN,
1967 rows.len(),
1968 line_number_layouts,
1969 snapshot.mode,
1970 cx,
1971 )
1972 }
1973 }
1974
1975 fn compute_layout(&mut self, bounds: Bounds<Pixels>, cx: &mut ElementContext) -> LayoutState {
1976 self.editor.update(cx, |editor, cx| {
1977 let snapshot = editor.snapshot(cx);
1978 let style = self.style.clone();
1979
1980 let font_id = cx.text_system().resolve_font(&style.text.font());
1981 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1982 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1983 let em_width = cx
1984 .text_system()
1985 .typographic_bounds(font_id, font_size, 'm')
1986 .unwrap()
1987 .size
1988 .width;
1989 let em_advance = cx
1990 .text_system()
1991 .advance(font_id, font_size, 'm')
1992 .unwrap()
1993 .width;
1994
1995 let gutter_dimensions = snapshot.gutter_dimensions(
1996 font_id,
1997 font_size,
1998 em_width,
1999 self.max_line_number_width(&snapshot, cx),
2000 cx,
2001 );
2002
2003 editor.gutter_width = gutter_dimensions.width;
2004
2005 let text_width = bounds.size.width - gutter_dimensions.width;
2006 let overscroll = size(em_width, px(0.));
2007 let _snapshot = {
2008 editor.set_visible_line_count(bounds.size.height / line_height, cx);
2009
2010 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
2011 let wrap_width = match editor.soft_wrap_mode(cx) {
2012 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2013 SoftWrap::EditorWidth => editor_width,
2014 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2015 };
2016
2017 if editor.set_wrap_width(Some(wrap_width), cx) {
2018 editor.snapshot(cx)
2019 } else {
2020 snapshot
2021 }
2022 };
2023
2024 let wrap_guides = editor
2025 .wrap_guides(cx)
2026 .iter()
2027 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2028 .collect::<SmallVec<[_; 2]>>();
2029
2030 let gutter_size = size(gutter_dimensions.width, bounds.size.height);
2031 let text_size = size(text_width, bounds.size.height);
2032
2033 let autoscroll_horizontally =
2034 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
2035 let mut snapshot = editor.snapshot(cx);
2036
2037 let scroll_position = snapshot.scroll_position();
2038 // The scroll position is a fractional point, the whole number of which represents
2039 // the top of the window in terms of display rows.
2040 let start_row = scroll_position.y as u32;
2041 let height_in_lines = bounds.size.height / line_height;
2042 let max_row = snapshot.max_point().row();
2043
2044 // Add 1 to ensure selections bleed off screen
2045 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
2046
2047 let start_anchor = if start_row == 0 {
2048 Anchor::min()
2049 } else {
2050 snapshot
2051 .buffer_snapshot
2052 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2053 };
2054 let end_anchor = if end_row > max_row {
2055 Anchor::max()
2056 } else {
2057 snapshot
2058 .buffer_snapshot
2059 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2060 };
2061
2062 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
2063 let mut active_rows = BTreeMap::new();
2064 let is_singleton = editor.is_singleton(cx);
2065
2066 let highlighted_rows = editor.highlighted_rows();
2067 let highlighted_ranges = editor.background_highlights_in_range(
2068 start_anchor..end_anchor,
2069 &snapshot.display_snapshot,
2070 cx.theme().colors(),
2071 );
2072
2073 let redacted_ranges = editor.redacted_ranges(start_anchor..end_anchor, &snapshot.display_snapshot, cx);
2074
2075 let mut newest_selection_head = None;
2076
2077 if editor.show_local_selections {
2078 let mut local_selections: Vec<Selection<Point>> = editor
2079 .selections
2080 .disjoint_in_range(start_anchor..end_anchor, cx);
2081 local_selections.extend(editor.selections.pending(cx));
2082 let mut layouts = Vec::new();
2083 let newest = editor.selections.newest(cx);
2084 for selection in local_selections.drain(..) {
2085 let is_empty = selection.start == selection.end;
2086 let is_newest = selection == newest;
2087
2088 let layout = SelectionLayout::new(
2089 selection,
2090 editor.selections.line_mode,
2091 editor.cursor_shape,
2092 &snapshot.display_snapshot,
2093 is_newest,
2094 editor.leader_peer_id.is_none(),
2095 None,
2096 );
2097 if is_newest {
2098 newest_selection_head = Some(layout.head);
2099 }
2100
2101 for row in cmp::max(layout.active_rows.start, start_row)
2102 ..=cmp::min(layout.active_rows.end, end_row)
2103 {
2104 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2105 *contains_non_empty_selection |= !is_empty;
2106 }
2107 layouts.push(layout);
2108 }
2109
2110 let player = if editor.read_only(cx) {
2111 cx.theme().players().read_only()
2112 } else {
2113 style.local_player
2114 };
2115
2116 selections.push((player, layouts));
2117 }
2118
2119 if let Some(collaboration_hub) = &editor.collaboration_hub {
2120 // When following someone, render the local selections in their color.
2121 if let Some(leader_id) = editor.leader_peer_id {
2122 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2123 if let Some(participant_index) = collaboration_hub
2124 .user_participant_indices(cx)
2125 .get(&collaborator.user_id)
2126 {
2127 if let Some((local_selection_style, _)) = selections.first_mut() {
2128 *local_selection_style = cx
2129 .theme()
2130 .players()
2131 .color_for_participant(participant_index.0);
2132 }
2133 }
2134 }
2135 }
2136
2137 let mut remote_selections = HashMap::default();
2138 for selection in snapshot.remote_selections_in_range(
2139 &(start_anchor..end_anchor),
2140 collaboration_hub.as_ref(),
2141 cx,
2142 ) {
2143 let selection_style = if let Some(participant_index) = selection.participant_index {
2144 cx.theme()
2145 .players()
2146 .color_for_participant(participant_index.0)
2147 } else {
2148 cx.theme().players().absent()
2149 };
2150
2151 // Don't re-render the leader's selections, since the local selections
2152 // match theirs.
2153 if Some(selection.peer_id) == editor.leader_peer_id {
2154 continue;
2155 }
2156 let key = HoveredCursor{replica_id: selection.replica_id, selection_id: selection.selection.id};
2157
2158 let is_shown = editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
2159
2160 remote_selections
2161 .entry(selection.replica_id)
2162 .or_insert((selection_style, Vec::new()))
2163 .1
2164 .push(SelectionLayout::new(
2165 selection.selection,
2166 selection.line_mode,
2167 selection.cursor_shape,
2168 &snapshot.display_snapshot,
2169 false,
2170 false,
2171 if is_shown {
2172 selection.user_name
2173 } else {
2174 None
2175 },
2176 ));
2177 }
2178
2179 selections.extend(remote_selections.into_values());
2180 }
2181
2182 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2183 let show_scrollbars = match scrollbar_settings.show {
2184 ShowScrollbar::Auto => {
2185 // Git
2186 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2187 ||
2188 // Selections
2189 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
2190 ||
2191 // Symbols Selections
2192 (is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
2193 ||
2194 // Diagnostics
2195 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
2196 ||
2197 // Scrollmanager
2198 editor.scroll_manager.scrollbars_visible()
2199 }
2200 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2201 ShowScrollbar::Always => true,
2202 ShowScrollbar::Never => false,
2203 };
2204
2205 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2206 let newest = editor.selections.newest::<Point>(cx);
2207 SelectionLayout::new(
2208 newest,
2209 editor.selections.line_mode,
2210 editor.cursor_shape,
2211 &snapshot.display_snapshot,
2212 true,
2213 true,
2214 None,
2215 )
2216 .head
2217 });
2218
2219 let (line_numbers, fold_statuses) = self.shape_line_numbers(
2220 start_row..end_row,
2221 &active_rows,
2222 head_for_relative,
2223 is_singleton,
2224 &snapshot,
2225 cx,
2226 );
2227
2228 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2229
2230 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2231
2232 let mut max_visible_line_width = Pixels::ZERO;
2233 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
2234 for line_with_invisibles in &line_layouts {
2235 if line_with_invisibles.line.width > max_visible_line_width {
2236 max_visible_line_width = line_with_invisibles.line.width;
2237 }
2238 }
2239
2240 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
2241 .unwrap()
2242 .width;
2243 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
2244
2245 let (scroll_width, blocks) = cx.with_element_context(|cx| {
2246 cx.with_element_id(Some("editor_blocks"), |cx| {
2247 self.layout_blocks(
2248 start_row..end_row,
2249 &snapshot,
2250 bounds.size.width,
2251 scroll_width,
2252 text_width,
2253 &gutter_dimensions,
2254 em_width,
2255 gutter_dimensions.width + gutter_dimensions.margin,
2256 line_height,
2257 &style,
2258 &line_layouts,
2259 editor,
2260 cx,
2261 )
2262 })
2263 });
2264
2265 let scroll_max = point(
2266 ((scroll_width - text_size.width) / em_width).max(0.0),
2267 max_row as f32,
2268 );
2269
2270 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2271
2272 let autoscrolled = if autoscroll_horizontally {
2273 editor.autoscroll_horizontally(
2274 start_row,
2275 text_size.width,
2276 scroll_width,
2277 em_width,
2278 &line_layouts,
2279 cx,
2280 )
2281 } else {
2282 false
2283 };
2284
2285 if clamped || autoscrolled {
2286 snapshot = editor.snapshot(cx);
2287 }
2288
2289 let gutter_settings = EditorSettings::get_global(cx).gutter;
2290
2291 let mut context_menu = None;
2292 let mut code_actions_indicator = None;
2293 if let Some(newest_selection_head) = newest_selection_head {
2294 if (start_row..end_row).contains(&newest_selection_head.row()) {
2295 if editor.context_menu_visible() {
2296 let max_height = cmp::min(
2297 12. * line_height,
2298 cmp::max(
2299 3. * line_height,
2300 (bounds.size.height - line_height) / 2.,
2301 )
2302 );
2303 context_menu =
2304 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2305 }
2306
2307 let active = matches!(
2308 editor.context_menu.read().as_ref(),
2309 Some(crate::ContextMenu::CodeActions(_))
2310 );
2311
2312 if gutter_settings.code_actions {
2313 code_actions_indicator = editor
2314 .render_code_actions_indicator(&style, active, cx)
2315 .map(|element| CodeActionsIndicator {
2316 row: newest_selection_head.row(),
2317 button: element,
2318 });
2319 }
2320 }
2321 }
2322
2323 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2324 let max_size = size(
2325 (120. * em_width) // Default size
2326 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2327 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2328 (16. * line_height) // Default size
2329 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2330 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2331 );
2332
2333 let hover = if context_menu.is_some() {
2334 None
2335 } else {
2336 editor.hover_state.render(
2337 &snapshot,
2338 &style,
2339 visible_rows,
2340 max_size,
2341 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2342 cx,
2343 )
2344 };
2345
2346 let editor_view = cx.view().clone();
2347 let fold_indicators = if gutter_settings.folds {
2348 cx.with_element_context(|cx| {
2349 cx.with_element_id(Some("gutter_fold_indicators"), |_cx| {
2350 editor.render_fold_indicators(
2351 fold_statuses,
2352 &style,
2353 editor.gutter_hovered,
2354 line_height,
2355 gutter_dimensions.margin,
2356 editor_view,
2357 )
2358 })
2359 })
2360 } else {
2361 Vec::new()
2362 };
2363
2364 let invisible_symbol_font_size = font_size / 2.;
2365 let tab_invisible = cx
2366 .text_system()
2367 .shape_line(
2368 "→".into(),
2369 invisible_symbol_font_size,
2370 &[TextRun {
2371 len: "→".len(),
2372 font: self.style.text.font(),
2373 color: cx.theme().colors().editor_invisible,
2374 background_color: None,
2375 underline: None,
2376 strikethrough: None,
2377 }],
2378 )
2379 .unwrap();
2380 let space_invisible = cx
2381 .text_system()
2382 .shape_line(
2383 "•".into(),
2384 invisible_symbol_font_size,
2385 &[TextRun {
2386 len: "•".len(),
2387 font: self.style.text.font(),
2388 color: cx.theme().colors().editor_invisible,
2389 background_color: None,
2390 underline: None,
2391 strikethrough: None,
2392 }],
2393 )
2394 .unwrap();
2395
2396 LayoutState {
2397 mode: snapshot.mode,
2398 position_map: Arc::new(PositionMap {
2399 size: bounds.size,
2400 scroll_position: point(
2401 scroll_position.x * em_width,
2402 scroll_position.y * line_height,
2403 ),
2404 scroll_max,
2405 line_layouts,
2406 line_height,
2407 em_width,
2408 em_advance,
2409 snapshot,
2410 }),
2411 visible_anchor_range: start_anchor..end_anchor,
2412 visible_display_row_range: start_row..end_row,
2413 wrap_guides,
2414 gutter_size,
2415 gutter_dimensions,
2416 text_size,
2417 scrollbar_row_range,
2418 show_scrollbars,
2419 is_singleton,
2420 max_row,
2421 active_rows,
2422 highlighted_rows,
2423 highlighted_ranges,
2424 redacted_ranges,
2425 line_numbers,
2426 display_hunks,
2427 blocks,
2428 selections,
2429 context_menu,
2430 code_actions_indicator,
2431 fold_indicators,
2432 tab_invisible,
2433 space_invisible,
2434 hover_popovers: hover,
2435 }
2436 })
2437 }
2438
2439 #[allow(clippy::too_many_arguments)]
2440 fn layout_blocks(
2441 &self,
2442 rows: Range<u32>,
2443 snapshot: &EditorSnapshot,
2444 editor_width: Pixels,
2445 scroll_width: Pixels,
2446 text_width: Pixels,
2447 gutter_dimensions: &GutterDimensions,
2448 em_width: Pixels,
2449 text_x: Pixels,
2450 line_height: Pixels,
2451 style: &EditorStyle,
2452 line_layouts: &[LineWithInvisibles],
2453 editor: &mut Editor,
2454 cx: &mut ElementContext,
2455 ) -> (Pixels, Vec<BlockLayout>) {
2456 let mut block_id = 0;
2457 let (fixed_blocks, non_fixed_blocks) = snapshot
2458 .blocks_in_range(rows.clone())
2459 .partition::<Vec<_>, _>(|(_, block)| match block {
2460 TransformBlock::ExcerptHeader { .. } => false,
2461 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2462 });
2463
2464 let render_block = |block: &TransformBlock,
2465 available_space: Size<AvailableSpace>,
2466 block_id: usize,
2467 editor: &mut Editor,
2468 cx: &mut ElementContext| {
2469 let mut element = match block {
2470 TransformBlock::Custom(block) => {
2471 let align_to = block
2472 .position()
2473 .to_point(&snapshot.buffer_snapshot)
2474 .to_display_point(snapshot);
2475 let anchor_x = text_x
2476 + if rows.contains(&align_to.row()) {
2477 line_layouts[(align_to.row() - rows.start) as usize]
2478 .line
2479 .x_for_index(align_to.column() as usize)
2480 } else {
2481 layout_line(align_to.row(), snapshot, style, cx)
2482 .unwrap()
2483 .x_for_index(align_to.column() as usize)
2484 };
2485
2486 block.render(&mut BlockContext {
2487 context: cx,
2488 anchor_x,
2489 gutter_dimensions,
2490 line_height,
2491 em_width,
2492 block_id,
2493 max_width: scroll_width.max(text_width),
2494 editor_style: &self.style,
2495 })
2496 }
2497
2498 TransformBlock::ExcerptHeader {
2499 buffer,
2500 range,
2501 starts_new_buffer,
2502 ..
2503 } => {
2504 let include_root = editor
2505 .project
2506 .as_ref()
2507 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2508 .unwrap_or_default();
2509
2510 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2511 let jump_path = ProjectPath {
2512 worktree_id: file.worktree_id(cx),
2513 path: file.path.clone(),
2514 };
2515 let jump_anchor = range
2516 .primary
2517 .as_ref()
2518 .map_or(range.context.start, |primary| primary.start);
2519 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2520
2521 cx.listener_for(&self.editor, move |editor, _, cx| {
2522 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2523 })
2524 });
2525
2526 let element = if *starts_new_buffer {
2527 let path = buffer.resolve_file_path(cx, include_root);
2528 let mut filename = None;
2529 let mut parent_path = None;
2530 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2531 if let Some(path) = path {
2532 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2533 parent_path = path
2534 .parent()
2535 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2536 }
2537
2538 v_flex()
2539 .id(("path header container", block_id))
2540 .size_full()
2541 .justify_center()
2542 .p(gpui::px(6.))
2543 .child(
2544 h_flex()
2545 .id("path header block")
2546 .size_full()
2547 .pl(gpui::px(12.))
2548 .pr(gpui::px(8.))
2549 .rounded_md()
2550 .shadow_md()
2551 .border()
2552 .border_color(cx.theme().colors().border)
2553 .bg(cx.theme().colors().editor_subheader_background)
2554 .justify_between()
2555 .hover(|style| style.bg(cx.theme().colors().element_hover))
2556 .child(
2557 h_flex().gap_3().child(
2558 h_flex()
2559 .gap_2()
2560 .child(
2561 filename
2562 .map(SharedString::from)
2563 .unwrap_or_else(|| "untitled".into()),
2564 )
2565 .when_some(parent_path, |then, path| {
2566 then.child(
2567 div().child(path).text_color(
2568 cx.theme().colors().text_muted,
2569 ),
2570 )
2571 }),
2572 ),
2573 )
2574 .when_some(jump_handler, |this, jump_handler| {
2575 this.cursor_pointer()
2576 .tooltip(|cx| {
2577 Tooltip::for_action(
2578 "Jump to Buffer",
2579 &OpenExcerpts,
2580 cx,
2581 )
2582 })
2583 .on_mouse_down(MouseButton::Left, |_, cx| {
2584 cx.stop_propagation()
2585 })
2586 .on_click(jump_handler)
2587 }),
2588 )
2589 } else {
2590 h_flex()
2591 .id(("collapsed context", block_id))
2592 .size_full()
2593 .gap(gutter_dimensions.left_padding + gutter_dimensions.right_padding)
2594 .child(
2595 h_flex()
2596 .justify_end()
2597 .flex_none()
2598 .w(gutter_dimensions.width
2599 - (gutter_dimensions.left_padding
2600 + gutter_dimensions.right_padding))
2601 .h_full()
2602 .text_buffer(cx)
2603 .text_color(cx.theme().colors().editor_line_number)
2604 .child("..."),
2605 )
2606 .child(
2607 ButtonLike::new("jump to collapsed context")
2608 .style(ButtonStyle::Transparent)
2609 .full_width()
2610 .child(
2611 div()
2612 .h_px()
2613 .w_full()
2614 .bg(cx.theme().colors().border_variant)
2615 .group_hover("", |style| {
2616 style.bg(cx.theme().colors().border)
2617 }),
2618 )
2619 .when_some(jump_handler, |this, jump_handler| {
2620 this.on_click(jump_handler).tooltip(|cx| {
2621 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2622 })
2623 }),
2624 )
2625 };
2626 element.into_any()
2627 }
2628 };
2629
2630 let size = element.measure(available_space, cx);
2631 (element, size)
2632 };
2633
2634 let mut fixed_block_max_width = Pixels::ZERO;
2635 let mut blocks = Vec::new();
2636 for (row, block) in fixed_blocks {
2637 let available_space = size(
2638 AvailableSpace::MinContent,
2639 AvailableSpace::Definite(block.height() as f32 * line_height),
2640 );
2641 let (element, element_size) =
2642 render_block(block, available_space, block_id, editor, cx);
2643 block_id += 1;
2644 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2645 blocks.push(BlockLayout {
2646 row,
2647 element,
2648 available_space,
2649 style: BlockStyle::Fixed,
2650 });
2651 }
2652 for (row, block) in non_fixed_blocks {
2653 let style = match block {
2654 TransformBlock::Custom(block) => block.style(),
2655 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2656 };
2657 let width = match style {
2658 BlockStyle::Sticky => editor_width,
2659 BlockStyle::Flex => editor_width
2660 .max(fixed_block_max_width)
2661 .max(gutter_dimensions.width + scroll_width),
2662 BlockStyle::Fixed => unreachable!(),
2663 };
2664 let available_space = size(
2665 AvailableSpace::Definite(width),
2666 AvailableSpace::Definite(block.height() as f32 * line_height),
2667 );
2668 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2669 block_id += 1;
2670 blocks.push(BlockLayout {
2671 row,
2672 element,
2673 available_space,
2674 style,
2675 });
2676 }
2677 (
2678 scroll_width.max(fixed_block_max_width - gutter_dimensions.width),
2679 blocks,
2680 )
2681 }
2682
2683 fn paint_scroll_wheel_listener(
2684 &mut self,
2685 interactive_bounds: &InteractiveBounds,
2686 layout: &LayoutState,
2687 cx: &mut ElementContext,
2688 ) {
2689 cx.on_mouse_event({
2690 let position_map = layout.position_map.clone();
2691 let editor = self.editor.clone();
2692 let interactive_bounds = interactive_bounds.clone();
2693 let mut delta = ScrollDelta::default();
2694
2695 move |event: &ScrollWheelEvent, phase, cx| {
2696 if phase == DispatchPhase::Bubble
2697 && interactive_bounds.visibly_contains(&event.position, cx)
2698 {
2699 delta = delta.coalesce(event.delta);
2700 editor.update(cx, |editor, cx| {
2701 let position = event.position;
2702 let position_map: &PositionMap = &position_map;
2703 let bounds = &interactive_bounds;
2704 if !bounds.visibly_contains(&position, cx) {
2705 return;
2706 }
2707
2708 let line_height = position_map.line_height;
2709 let max_glyph_width = position_map.em_width;
2710 let (delta, axis) = match delta {
2711 gpui::ScrollDelta::Pixels(mut pixels) => {
2712 //Trackpad
2713 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2714 (pixels, axis)
2715 }
2716
2717 gpui::ScrollDelta::Lines(lines) => {
2718 //Not trackpad
2719 let pixels =
2720 point(lines.x * max_glyph_width, lines.y * line_height);
2721 (pixels, None)
2722 }
2723 };
2724
2725 let scroll_position = position_map.snapshot.scroll_position();
2726 let x = (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width;
2727 let y = (scroll_position.y * line_height - delta.y) / line_height;
2728 let scroll_position =
2729 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2730 editor.scroll(scroll_position, axis, cx);
2731 cx.stop_propagation();
2732 });
2733 }
2734 }
2735 });
2736 }
2737
2738 fn paint_mouse_listeners(
2739 &mut self,
2740 bounds: Bounds<Pixels>,
2741 gutter_bounds: Bounds<Pixels>,
2742 text_bounds: Bounds<Pixels>,
2743 layout: &LayoutState,
2744 cx: &mut ElementContext,
2745 ) {
2746 let interactive_bounds = InteractiveBounds {
2747 bounds: bounds.intersect(&cx.content_mask().bounds),
2748 stacking_order: cx.stacking_order().clone(),
2749 };
2750
2751 self.paint_scroll_wheel_listener(&interactive_bounds, layout, cx);
2752
2753 cx.on_mouse_event({
2754 let position_map = layout.position_map.clone();
2755 let editor = self.editor.clone();
2756 let stacking_order = cx.stacking_order().clone();
2757 let interactive_bounds = interactive_bounds.clone();
2758
2759 move |event: &MouseDownEvent, phase, cx| {
2760 if phase == DispatchPhase::Bubble
2761 && interactive_bounds.visibly_contains(&event.position, cx)
2762 {
2763 match event.button {
2764 MouseButton::Left => editor.update(cx, |editor, cx| {
2765 Self::mouse_left_down(
2766 editor,
2767 event,
2768 &position_map,
2769 text_bounds,
2770 gutter_bounds,
2771 &stacking_order,
2772 cx,
2773 );
2774 }),
2775 MouseButton::Right => editor.update(cx, |editor, cx| {
2776 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx);
2777 }),
2778 _ => {}
2779 };
2780 }
2781 }
2782 });
2783
2784 cx.on_mouse_event({
2785 let position_map = layout.position_map.clone();
2786 let editor = self.editor.clone();
2787 let stacking_order = cx.stacking_order().clone();
2788 let interactive_bounds = interactive_bounds.clone();
2789
2790 move |event: &MouseUpEvent, phase, cx| {
2791 if phase == DispatchPhase::Bubble {
2792 editor.update(cx, |editor, cx| {
2793 Self::mouse_up(
2794 editor,
2795 event,
2796 &position_map,
2797 text_bounds,
2798 &interactive_bounds,
2799 &stacking_order,
2800 cx,
2801 )
2802 });
2803 }
2804 }
2805 });
2806 cx.on_mouse_event({
2807 let position_map = layout.position_map.clone();
2808 let editor = self.editor.clone();
2809 let stacking_order = cx.stacking_order().clone();
2810
2811 move |event: &MouseMoveEvent, phase, cx| {
2812 // if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
2813
2814 if phase == DispatchPhase::Bubble {
2815 editor.update(cx, |editor, cx| {
2816 if event.pressed_button == Some(MouseButton::Left) {
2817 Self::mouse_dragged(
2818 editor,
2819 event,
2820 &position_map,
2821 text_bounds,
2822 gutter_bounds,
2823 &stacking_order,
2824 cx,
2825 )
2826 }
2827
2828 if interactive_bounds.visibly_contains(&event.position, cx) {
2829 Self::mouse_moved(
2830 editor,
2831 event,
2832 &position_map,
2833 text_bounds,
2834 gutter_bounds,
2835 &stacking_order,
2836 cx,
2837 )
2838 }
2839 });
2840 }
2841 }
2842 });
2843 }
2844}
2845
2846#[derive(Debug)]
2847pub(crate) struct LineWithInvisibles {
2848 pub line: ShapedLine,
2849 invisibles: Vec<Invisible>,
2850}
2851
2852impl LineWithInvisibles {
2853 fn from_chunks<'a>(
2854 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2855 text_style: &TextStyle,
2856 max_line_len: usize,
2857 max_line_count: usize,
2858 line_number_layouts: &[Option<ShapedLine>],
2859 editor_mode: EditorMode,
2860 cx: &WindowContext,
2861 ) -> Vec<Self> {
2862 let mut layouts = Vec::with_capacity(max_line_count);
2863 let mut line = String::new();
2864 let mut invisibles = Vec::new();
2865 let mut styles = Vec::new();
2866 let mut non_whitespace_added = false;
2867 let mut row = 0;
2868 let mut line_exceeded_max_len = false;
2869 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2870
2871 for highlighted_chunk in chunks.chain([HighlightedChunk {
2872 chunk: "\n",
2873 style: None,
2874 is_tab: false,
2875 }]) {
2876 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2877 if ix > 0 {
2878 let shaped_line = cx
2879 .text_system()
2880 .shape_line(line.clone().into(), font_size, &styles)
2881 .unwrap();
2882 layouts.push(Self {
2883 line: shaped_line,
2884 invisibles: std::mem::take(&mut invisibles),
2885 });
2886
2887 line.clear();
2888 styles.clear();
2889 row += 1;
2890 line_exceeded_max_len = false;
2891 non_whitespace_added = false;
2892 if row == max_line_count {
2893 return layouts;
2894 }
2895 }
2896
2897 if !line_chunk.is_empty() && !line_exceeded_max_len {
2898 let text_style = if let Some(style) = highlighted_chunk.style {
2899 Cow::Owned(text_style.clone().highlight(style))
2900 } else {
2901 Cow::Borrowed(text_style)
2902 };
2903
2904 if line.len() + line_chunk.len() > max_line_len {
2905 let mut chunk_len = max_line_len - line.len();
2906 while !line_chunk.is_char_boundary(chunk_len) {
2907 chunk_len -= 1;
2908 }
2909 line_chunk = &line_chunk[..chunk_len];
2910 line_exceeded_max_len = true;
2911 }
2912
2913 styles.push(TextRun {
2914 len: line_chunk.len(),
2915 font: text_style.font(),
2916 color: text_style.color,
2917 background_color: text_style.background_color,
2918 underline: text_style.underline,
2919 strikethrough: text_style.strikethrough,
2920 });
2921
2922 if editor_mode == EditorMode::Full {
2923 // Line wrap pads its contents with fake whitespaces,
2924 // avoid printing them
2925 let inside_wrapped_string = line_number_layouts
2926 .get(row)
2927 .and_then(|layout| layout.as_ref())
2928 .is_none();
2929 if highlighted_chunk.is_tab {
2930 if non_whitespace_added || !inside_wrapped_string {
2931 invisibles.push(Invisible::Tab {
2932 line_start_offset: line.len(),
2933 });
2934 }
2935 } else {
2936 invisibles.extend(
2937 line_chunk
2938 .chars()
2939 .enumerate()
2940 .filter(|(_, line_char)| {
2941 let is_whitespace = line_char.is_whitespace();
2942 non_whitespace_added |= !is_whitespace;
2943 is_whitespace
2944 && (non_whitespace_added || !inside_wrapped_string)
2945 })
2946 .map(|(whitespace_index, _)| Invisible::Whitespace {
2947 line_offset: line.len() + whitespace_index,
2948 }),
2949 )
2950 }
2951 }
2952
2953 line.push_str(line_chunk);
2954 }
2955 }
2956 }
2957
2958 layouts
2959 }
2960
2961 fn draw(
2962 &self,
2963 layout: &LayoutState,
2964 row: u32,
2965 content_origin: gpui::Point<Pixels>,
2966 whitespace_setting: ShowWhitespaceSetting,
2967 selection_ranges: &[Range<DisplayPoint>],
2968 cx: &mut ElementContext,
2969 ) {
2970 let line_height = layout.position_map.line_height;
2971 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2972
2973 self.line
2974 .paint(
2975 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2976 line_height,
2977 cx,
2978 )
2979 .log_err();
2980
2981 self.draw_invisibles(
2982 &selection_ranges,
2983 layout,
2984 content_origin,
2985 line_y,
2986 row,
2987 line_height,
2988 whitespace_setting,
2989 cx,
2990 );
2991 }
2992
2993 #[allow(clippy::too_many_arguments)]
2994 fn draw_invisibles(
2995 &self,
2996 selection_ranges: &[Range<DisplayPoint>],
2997 layout: &LayoutState,
2998 content_origin: gpui::Point<Pixels>,
2999 line_y: Pixels,
3000 row: u32,
3001 line_height: Pixels,
3002 whitespace_setting: ShowWhitespaceSetting,
3003 cx: &mut ElementContext,
3004 ) {
3005 let allowed_invisibles_regions = match whitespace_setting {
3006 ShowWhitespaceSetting::None => return,
3007 ShowWhitespaceSetting::Selection => Some(selection_ranges),
3008 ShowWhitespaceSetting::All => None,
3009 };
3010
3011 for invisible in &self.invisibles {
3012 let (&token_offset, invisible_symbol) = match invisible {
3013 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
3014 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
3015 };
3016
3017 let x_offset = self.line.x_for_index(token_offset);
3018 let invisible_offset =
3019 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
3020 let origin = content_origin
3021 + gpui::point(
3022 x_offset + invisible_offset - layout.position_map.scroll_position.x,
3023 line_y,
3024 );
3025
3026 if let Some(allowed_regions) = allowed_invisibles_regions {
3027 let invisible_point = DisplayPoint::new(row, token_offset as u32);
3028 if !allowed_regions
3029 .iter()
3030 .any(|region| region.start <= invisible_point && invisible_point < region.end)
3031 {
3032 continue;
3033 }
3034 }
3035 invisible_symbol.paint(origin, line_height, cx).log_err();
3036 }
3037 }
3038}
3039
3040#[derive(Debug, Clone, Copy, PartialEq, Eq)]
3041enum Invisible {
3042 Tab { line_start_offset: usize },
3043 Whitespace { line_offset: usize },
3044}
3045
3046impl Element for EditorElement {
3047 type State = ();
3048
3049 fn request_layout(
3050 &mut self,
3051 _element_state: Option<Self::State>,
3052 cx: &mut gpui::ElementContext,
3053 ) -> (gpui::LayoutId, Self::State) {
3054 cx.with_view_id(self.editor.entity_id(), |cx| {
3055 self.editor.update(cx, |editor, cx| {
3056 editor.set_style(self.style.clone(), cx);
3057
3058 let layout_id = match editor.mode {
3059 EditorMode::SingleLine => {
3060 let rem_size = cx.rem_size();
3061 let mut style = Style::default();
3062 style.size.width = relative(1.).into();
3063 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
3064 cx.with_element_context(|cx| cx.request_layout(&style, None))
3065 }
3066 EditorMode::AutoHeight { max_lines } => {
3067 let editor_handle = cx.view().clone();
3068 let max_line_number_width =
3069 self.max_line_number_width(&editor.snapshot(cx), cx);
3070 cx.with_element_context(|cx| {
3071 cx.request_measured_layout(
3072 Style::default(),
3073 move |known_dimensions, _, cx| {
3074 editor_handle
3075 .update(cx, |editor, cx| {
3076 compute_auto_height_layout(
3077 editor,
3078 max_lines,
3079 max_line_number_width,
3080 known_dimensions,
3081 cx,
3082 )
3083 })
3084 .unwrap_or_default()
3085 },
3086 )
3087 })
3088 }
3089 EditorMode::Full => {
3090 let mut style = Style::default();
3091 style.size.width = relative(1.).into();
3092 style.size.height = relative(1.).into();
3093 cx.with_element_context(|cx| cx.request_layout(&style, None))
3094 }
3095 };
3096
3097 (layout_id, ())
3098 })
3099 })
3100 }
3101
3102 fn paint(
3103 &mut self,
3104 bounds: Bounds<gpui::Pixels>,
3105 _element_state: &mut Self::State,
3106 cx: &mut gpui::ElementContext,
3107 ) {
3108 let editor = self.editor.clone();
3109
3110 cx.paint_view(self.editor.entity_id(), |cx| {
3111 cx.with_text_style(
3112 Some(gpui::TextStyleRefinement {
3113 font_size: Some(self.style.text.font_size),
3114 line_height: Some(self.style.text.line_height),
3115 ..Default::default()
3116 }),
3117 |cx| {
3118 let mut layout = self.compute_layout(bounds, cx);
3119 let gutter_bounds = Bounds {
3120 origin: bounds.origin,
3121 size: layout.gutter_size,
3122 };
3123 let text_bounds = Bounds {
3124 origin: gutter_bounds.upper_right(),
3125 size: layout.text_size,
3126 };
3127
3128 let focus_handle = editor.focus_handle(cx);
3129 let key_context = self.editor.read(cx).key_context(cx);
3130 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
3131 self.register_actions(cx);
3132
3133 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3134 self.register_key_listeners(cx, text_bounds, &layout);
3135 cx.handle_input(
3136 &focus_handle,
3137 ElementInputHandler::new(bounds, self.editor.clone()),
3138 );
3139
3140 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
3141 if layout.gutter_size.width > Pixels::ZERO {
3142 self.paint_gutter(gutter_bounds, &mut layout, cx);
3143 }
3144 self.paint_text(text_bounds, &mut layout, cx);
3145
3146 cx.with_z_index(0, |cx| {
3147 self.paint_mouse_listeners(
3148 bounds,
3149 gutter_bounds,
3150 text_bounds,
3151 &layout,
3152 cx,
3153 );
3154 });
3155 if !layout.blocks.is_empty() {
3156 cx.with_z_index(0, |cx| {
3157 cx.with_element_id(Some("editor_blocks"), |cx| {
3158 self.paint_blocks(bounds, &mut layout, cx);
3159 });
3160 })
3161 }
3162
3163 cx.with_z_index(1, |cx| {
3164 self.paint_overlays(text_bounds, &mut layout, cx);
3165 });
3166
3167 cx.with_z_index(2, |cx| self.paint_scrollbar(bounds, &mut layout, cx));
3168 });
3169 })
3170 },
3171 )
3172 })
3173 }
3174}
3175
3176impl IntoElement for EditorElement {
3177 type Element = Self;
3178
3179 fn element_id(&self) -> Option<gpui::ElementId> {
3180 self.editor.element_id()
3181 }
3182
3183 fn into_element(self) -> Self::Element {
3184 self
3185 }
3186}
3187
3188type BufferRow = u32;
3189
3190pub struct LayoutState {
3191 position_map: Arc<PositionMap>,
3192 gutter_size: Size<Pixels>,
3193 gutter_dimensions: GutterDimensions,
3194 text_size: gpui::Size<Pixels>,
3195 mode: EditorMode,
3196 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3197 visible_anchor_range: Range<Anchor>,
3198 visible_display_row_range: Range<u32>,
3199 active_rows: BTreeMap<u32, bool>,
3200 highlighted_rows: Option<Range<u32>>,
3201 line_numbers: Vec<Option<ShapedLine>>,
3202 display_hunks: Vec<DisplayDiffHunk>,
3203 blocks: Vec<BlockLayout>,
3204 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3205 redacted_ranges: Vec<Range<DisplayPoint>>,
3206 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3207 scrollbar_row_range: Range<f32>,
3208 show_scrollbars: bool,
3209 is_singleton: bool,
3210 max_row: u32,
3211 context_menu: Option<(DisplayPoint, AnyElement)>,
3212 code_actions_indicator: Option<CodeActionsIndicator>,
3213 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3214 fold_indicators: Vec<Option<IconButton>>,
3215 tab_invisible: ShapedLine,
3216 space_invisible: ShapedLine,
3217}
3218
3219impl LayoutState {
3220 fn line_end_overshoot(&self) -> Pixels {
3221 0.15 * self.position_map.line_height
3222 }
3223}
3224
3225struct CodeActionsIndicator {
3226 row: u32,
3227 button: IconButton,
3228}
3229
3230struct PositionMap {
3231 size: Size<Pixels>,
3232 line_height: Pixels,
3233 scroll_position: gpui::Point<Pixels>,
3234 scroll_max: gpui::Point<f32>,
3235 em_width: Pixels,
3236 em_advance: Pixels,
3237 line_layouts: Vec<LineWithInvisibles>,
3238 snapshot: EditorSnapshot,
3239}
3240
3241#[derive(Debug, Copy, Clone)]
3242pub struct PointForPosition {
3243 pub previous_valid: DisplayPoint,
3244 pub next_valid: DisplayPoint,
3245 pub exact_unclipped: DisplayPoint,
3246 pub column_overshoot_after_line_end: u32,
3247}
3248
3249impl PointForPosition {
3250 pub fn as_valid(&self) -> Option<DisplayPoint> {
3251 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3252 Some(self.previous_valid)
3253 } else {
3254 None
3255 }
3256 }
3257}
3258
3259impl PositionMap {
3260 fn point_for_position(
3261 &self,
3262 text_bounds: Bounds<Pixels>,
3263 position: gpui::Point<Pixels>,
3264 ) -> PointForPosition {
3265 let scroll_position = self.snapshot.scroll_position();
3266 let position = position - text_bounds.origin;
3267 let y = position.y.max(px(0.)).min(self.size.height);
3268 let x = position.x + (scroll_position.x * self.em_width);
3269 let row = ((y / self.line_height) + scroll_position.y) as u32;
3270
3271 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3272 .line_layouts
3273 .get(row as usize - scroll_position.y as usize)
3274 .map(|LineWithInvisibles { line, .. }| line)
3275 {
3276 if let Some(ix) = line.index_for_x(x) {
3277 (ix as u32, px(0.))
3278 } else {
3279 (line.len as u32, px(0.).max(x - line.width))
3280 }
3281 } else {
3282 (0, x)
3283 };
3284
3285 let mut exact_unclipped = DisplayPoint::new(row, column);
3286 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3287 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3288
3289 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3290 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3291 PointForPosition {
3292 previous_valid,
3293 next_valid,
3294 exact_unclipped,
3295 column_overshoot_after_line_end,
3296 }
3297 }
3298}
3299
3300struct BlockLayout {
3301 row: u32,
3302 element: AnyElement,
3303 available_space: Size<AvailableSpace>,
3304 style: BlockStyle,
3305}
3306
3307fn layout_line(
3308 row: u32,
3309 snapshot: &EditorSnapshot,
3310 style: &EditorStyle,
3311 cx: &WindowContext,
3312) -> Result<ShapedLine> {
3313 let mut line = snapshot.line(row);
3314
3315 if line.len() > MAX_LINE_LEN {
3316 let mut len = MAX_LINE_LEN;
3317 while !line.is_char_boundary(len) {
3318 len -= 1;
3319 }
3320
3321 line.truncate(len);
3322 }
3323
3324 cx.text_system().shape_line(
3325 line.into(),
3326 style.text.font_size.to_pixels(cx.rem_size()),
3327 &[TextRun {
3328 len: snapshot.line_len(row) as usize,
3329 font: style.text.font(),
3330 color: Hsla::default(),
3331 background_color: None,
3332 underline: None,
3333 strikethrough: None,
3334 }],
3335 )
3336}
3337
3338#[derive(Debug)]
3339pub struct Cursor {
3340 origin: gpui::Point<Pixels>,
3341 block_width: Pixels,
3342 line_height: Pixels,
3343 color: Hsla,
3344 shape: CursorShape,
3345 block_text: Option<ShapedLine>,
3346 cursor_name: Option<CursorName>,
3347}
3348
3349#[derive(Debug)]
3350pub struct CursorName {
3351 string: SharedString,
3352 color: Hsla,
3353 is_top_row: bool,
3354 z_index: u16,
3355}
3356
3357impl Cursor {
3358 pub fn new(
3359 origin: gpui::Point<Pixels>,
3360 block_width: Pixels,
3361 line_height: Pixels,
3362 color: Hsla,
3363 shape: CursorShape,
3364 block_text: Option<ShapedLine>,
3365 cursor_name: Option<CursorName>,
3366 ) -> Cursor {
3367 Cursor {
3368 origin,
3369 block_width,
3370 line_height,
3371 color,
3372 shape,
3373 block_text,
3374 cursor_name,
3375 }
3376 }
3377
3378 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3379 Bounds {
3380 origin: self.origin + origin,
3381 size: size(self.block_width, self.line_height),
3382 }
3383 }
3384
3385 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3386 let bounds = match self.shape {
3387 CursorShape::Bar => Bounds {
3388 origin: self.origin + origin,
3389 size: size(px(2.0), self.line_height),
3390 },
3391 CursorShape::Block | CursorShape::Hollow => Bounds {
3392 origin: self.origin + origin,
3393 size: size(self.block_width, self.line_height),
3394 },
3395 CursorShape::Underscore => Bounds {
3396 origin: self.origin
3397 + origin
3398 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3399 size: size(self.block_width, px(2.0)),
3400 },
3401 };
3402
3403 //Draw background or border quad
3404 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3405 outline(bounds, self.color)
3406 } else {
3407 fill(bounds, self.color)
3408 };
3409
3410 if let Some(name) = &self.cursor_name {
3411 let text_size = self.line_height / 1.5;
3412
3413 let name_origin = if name.is_top_row {
3414 point(bounds.right() - px(1.), bounds.top())
3415 } else {
3416 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3417 };
3418 cx.with_z_index(name.z_index, |cx| {
3419 div()
3420 .bg(self.color)
3421 .text_size(text_size)
3422 .px_0p5()
3423 .line_height(text_size + px(2.))
3424 .text_color(name.color)
3425 .child(name.string.clone())
3426 .into_any_element()
3427 .draw(
3428 name_origin,
3429 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3430 cx,
3431 )
3432 })
3433 }
3434
3435 cx.paint_quad(cursor);
3436
3437 if let Some(block_text) = &self.block_text {
3438 block_text
3439 .paint(self.origin + origin, self.line_height, cx)
3440 .log_err();
3441 }
3442 }
3443
3444 pub fn shape(&self) -> CursorShape {
3445 self.shape
3446 }
3447}
3448
3449#[derive(Debug)]
3450pub struct HighlightedRange {
3451 pub start_y: Pixels,
3452 pub line_height: Pixels,
3453 pub lines: Vec<HighlightedRangeLine>,
3454 pub color: Hsla,
3455 pub corner_radius: Pixels,
3456}
3457
3458#[derive(Debug)]
3459pub struct HighlightedRangeLine {
3460 pub start_x: Pixels,
3461 pub end_x: Pixels,
3462}
3463
3464impl HighlightedRange {
3465 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3466 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3467 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3468 self.paint_lines(
3469 self.start_y + self.line_height,
3470 &self.lines[1..],
3471 bounds,
3472 cx,
3473 );
3474 } else {
3475 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3476 }
3477 }
3478
3479 fn paint_lines(
3480 &self,
3481 start_y: Pixels,
3482 lines: &[HighlightedRangeLine],
3483 _bounds: Bounds<Pixels>,
3484 cx: &mut ElementContext,
3485 ) {
3486 if lines.is_empty() {
3487 return;
3488 }
3489
3490 let first_line = lines.first().unwrap();
3491 let last_line = lines.last().unwrap();
3492
3493 let first_top_left = point(first_line.start_x, start_y);
3494 let first_top_right = point(first_line.end_x, start_y);
3495
3496 let curve_height = point(Pixels::ZERO, self.corner_radius);
3497 let curve_width = |start_x: Pixels, end_x: Pixels| {
3498 let max = (end_x - start_x) / 2.;
3499 let width = if max < self.corner_radius {
3500 max
3501 } else {
3502 self.corner_radius
3503 };
3504
3505 point(width, Pixels::ZERO)
3506 };
3507
3508 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3509 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3510 path.curve_to(first_top_right + curve_height, first_top_right);
3511
3512 let mut iter = lines.iter().enumerate().peekable();
3513 while let Some((ix, line)) = iter.next() {
3514 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3515
3516 if let Some((_, next_line)) = iter.peek() {
3517 let next_top_right = point(next_line.end_x, bottom_right.y);
3518
3519 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3520 Ordering::Equal => {
3521 path.line_to(bottom_right);
3522 }
3523 Ordering::Less => {
3524 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3525 path.line_to(bottom_right - curve_height);
3526 if self.corner_radius > Pixels::ZERO {
3527 path.curve_to(bottom_right - curve_width, bottom_right);
3528 }
3529 path.line_to(next_top_right + curve_width);
3530 if self.corner_radius > Pixels::ZERO {
3531 path.curve_to(next_top_right + curve_height, next_top_right);
3532 }
3533 }
3534 Ordering::Greater => {
3535 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3536 path.line_to(bottom_right - curve_height);
3537 if self.corner_radius > Pixels::ZERO {
3538 path.curve_to(bottom_right + curve_width, bottom_right);
3539 }
3540 path.line_to(next_top_right - curve_width);
3541 if self.corner_radius > Pixels::ZERO {
3542 path.curve_to(next_top_right + curve_height, next_top_right);
3543 }
3544 }
3545 }
3546 } else {
3547 let curve_width = curve_width(line.start_x, line.end_x);
3548 path.line_to(bottom_right - curve_height);
3549 if self.corner_radius > Pixels::ZERO {
3550 path.curve_to(bottom_right - curve_width, bottom_right);
3551 }
3552
3553 let bottom_left = point(line.start_x, bottom_right.y);
3554 path.line_to(bottom_left + curve_width);
3555 if self.corner_radius > Pixels::ZERO {
3556 path.curve_to(bottom_left - curve_height, bottom_left);
3557 }
3558 }
3559 }
3560
3561 if first_line.start_x > last_line.start_x {
3562 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3563 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3564 path.line_to(second_top_left + curve_height);
3565 if self.corner_radius > Pixels::ZERO {
3566 path.curve_to(second_top_left + curve_width, second_top_left);
3567 }
3568 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3569 path.line_to(first_bottom_left - curve_width);
3570 if self.corner_radius > Pixels::ZERO {
3571 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3572 }
3573 }
3574
3575 path.line_to(first_top_left + curve_height);
3576 if self.corner_radius > Pixels::ZERO {
3577 path.curve_to(first_top_left + top_curve_width, first_top_left);
3578 }
3579 path.line_to(first_top_right - top_curve_width);
3580
3581 cx.paint_path(path, self.color);
3582 }
3583}
3584
3585pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3586 (delta.pow(1.5) / 100.0).into()
3587}
3588
3589fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3590 (delta.pow(1.2) / 300.0).into()
3591}
3592
3593#[cfg(test)]
3594mod tests {
3595 use super::*;
3596 use crate::{
3597 display_map::{BlockDisposition, BlockProperties},
3598 editor_tests::{init_test, update_test_language_settings},
3599 Editor, MultiBuffer,
3600 };
3601 use gpui::TestAppContext;
3602 use language::language_settings;
3603 use log::info;
3604 use std::{num::NonZeroU32, sync::Arc};
3605 use util::test::sample_text;
3606
3607 #[gpui::test]
3608 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3609 init_test(cx, |_| {});
3610 let window = cx.add_window(|cx| {
3611 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3612 Editor::new(EditorMode::Full, buffer, None, cx)
3613 });
3614
3615 let editor = window.root(cx).unwrap();
3616 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3617 let element = EditorElement::new(&editor, style);
3618
3619 let layouts = window
3620 .update(cx, |editor, cx| {
3621 let snapshot = editor.snapshot(cx);
3622 element
3623 .shape_line_numbers(
3624 0..6,
3625 &Default::default(),
3626 DisplayPoint::new(0, 0),
3627 false,
3628 &snapshot,
3629 cx,
3630 )
3631 .0
3632 })
3633 .unwrap();
3634 assert_eq!(layouts.len(), 6);
3635
3636 let relative_rows = window
3637 .update(cx, |editor, cx| {
3638 let snapshot = editor.snapshot(cx);
3639 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3640 })
3641 .unwrap();
3642 assert_eq!(relative_rows[&0], 3);
3643 assert_eq!(relative_rows[&1], 2);
3644 assert_eq!(relative_rows[&2], 1);
3645 // current line has no relative number
3646 assert_eq!(relative_rows[&4], 1);
3647 assert_eq!(relative_rows[&5], 2);
3648
3649 // works if cursor is before screen
3650 let relative_rows = window
3651 .update(cx, |editor, cx| {
3652 let snapshot = editor.snapshot(cx);
3653
3654 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3655 })
3656 .unwrap();
3657 assert_eq!(relative_rows.len(), 3);
3658 assert_eq!(relative_rows[&3], 2);
3659 assert_eq!(relative_rows[&4], 3);
3660 assert_eq!(relative_rows[&5], 4);
3661
3662 // works if cursor is after screen
3663 let relative_rows = window
3664 .update(cx, |editor, cx| {
3665 let snapshot = editor.snapshot(cx);
3666
3667 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3668 })
3669 .unwrap();
3670 assert_eq!(relative_rows.len(), 3);
3671 assert_eq!(relative_rows[&0], 5);
3672 assert_eq!(relative_rows[&1], 4);
3673 assert_eq!(relative_rows[&2], 3);
3674 }
3675
3676 #[gpui::test]
3677 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3678 init_test(cx, |_| {});
3679
3680 let window = cx.add_window(|cx| {
3681 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3682 Editor::new(EditorMode::Full, buffer, None, cx)
3683 });
3684 let editor = window.root(cx).unwrap();
3685 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3686 let mut element = EditorElement::new(&editor, style);
3687
3688 window
3689 .update(cx, |editor, cx| {
3690 editor.cursor_shape = CursorShape::Block;
3691 editor.change_selections(None, cx, |s| {
3692 s.select_ranges([
3693 Point::new(0, 0)..Point::new(1, 0),
3694 Point::new(3, 2)..Point::new(3, 3),
3695 Point::new(5, 6)..Point::new(6, 0),
3696 ]);
3697 });
3698 })
3699 .unwrap();
3700 let state = cx
3701 .update_window(window.into(), |view, cx| {
3702 cx.with_element_context(|cx| {
3703 cx.with_view_id(view.entity_id(), |cx| {
3704 element.compute_layout(
3705 Bounds {
3706 origin: point(px(500.), px(500.)),
3707 size: size(px(500.), px(500.)),
3708 },
3709 cx,
3710 )
3711 })
3712 })
3713 })
3714 .unwrap();
3715
3716 assert_eq!(state.selections.len(), 1);
3717 let local_selections = &state.selections[0].1;
3718 assert_eq!(local_selections.len(), 3);
3719 // moves cursor back one line
3720 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3721 assert_eq!(
3722 local_selections[0].range,
3723 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3724 );
3725
3726 // moves cursor back one column
3727 assert_eq!(
3728 local_selections[1].range,
3729 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3730 );
3731 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3732
3733 // leaves cursor on the max point
3734 assert_eq!(
3735 local_selections[2].range,
3736 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3737 );
3738 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3739
3740 // active lines does not include 1 (even though the range of the selection does)
3741 assert_eq!(
3742 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3743 vec![0, 3, 5, 6]
3744 );
3745
3746 // multi-buffer support
3747 // in DisplayPoint coordinates, this is what we're dealing with:
3748 // 0: [[file
3749 // 1: header]]
3750 // 2: aaaaaa
3751 // 3: bbbbbb
3752 // 4: cccccc
3753 // 5:
3754 // 6: ...
3755 // 7: ffffff
3756 // 8: gggggg
3757 // 9: hhhhhh
3758 // 10:
3759 // 11: [[file
3760 // 12: header]]
3761 // 13: bbbbbb
3762 // 14: cccccc
3763 // 15: dddddd
3764 let window = cx.add_window(|cx| {
3765 let buffer = MultiBuffer::build_multi(
3766 [
3767 (
3768 &(sample_text(8, 6, 'a') + "\n"),
3769 vec![
3770 Point::new(0, 0)..Point::new(3, 0),
3771 Point::new(4, 0)..Point::new(7, 0),
3772 ],
3773 ),
3774 (
3775 &(sample_text(8, 6, 'a') + "\n"),
3776 vec![Point::new(1, 0)..Point::new(3, 0)],
3777 ),
3778 ],
3779 cx,
3780 );
3781 Editor::new(EditorMode::Full, buffer, None, cx)
3782 });
3783 let editor = window.root(cx).unwrap();
3784 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3785 let mut element = EditorElement::new(&editor, style);
3786 let _state = window.update(cx, |editor, cx| {
3787 editor.cursor_shape = CursorShape::Block;
3788 editor.change_selections(None, cx, |s| {
3789 s.select_display_ranges([
3790 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3791 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3792 ]);
3793 });
3794 });
3795
3796 let state = cx
3797 .update_window(window.into(), |view, cx| {
3798 cx.with_element_context(|cx| {
3799 cx.with_view_id(view.entity_id(), |cx| {
3800 element.compute_layout(
3801 Bounds {
3802 origin: point(px(500.), px(500.)),
3803 size: size(px(500.), px(500.)),
3804 },
3805 cx,
3806 )
3807 })
3808 })
3809 })
3810 .unwrap();
3811 assert_eq!(state.selections.len(), 1);
3812 let local_selections = &state.selections[0].1;
3813 assert_eq!(local_selections.len(), 2);
3814
3815 // moves cursor on excerpt boundary back a line
3816 // and doesn't allow selection to bleed through
3817 assert_eq!(
3818 local_selections[0].range,
3819 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3820 );
3821 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3822 // moves cursor on buffer boundary back two lines
3823 // and doesn't allow selection to bleed through
3824 assert_eq!(
3825 local_selections[1].range,
3826 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3827 );
3828 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3829 }
3830
3831 #[gpui::test]
3832 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3833 init_test(cx, |_| {});
3834
3835 let window = cx.add_window(|cx| {
3836 let buffer = MultiBuffer::build_simple("", cx);
3837 Editor::new(EditorMode::Full, buffer, None, cx)
3838 });
3839 let editor = window.root(cx).unwrap();
3840 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3841 window
3842 .update(cx, |editor, cx| {
3843 editor.set_placeholder_text("hello", cx);
3844 editor.insert_blocks(
3845 [BlockProperties {
3846 style: BlockStyle::Fixed,
3847 disposition: BlockDisposition::Above,
3848 height: 3,
3849 position: Anchor::min(),
3850 render: Arc::new(|_| div().into_any()),
3851 }],
3852 None,
3853 cx,
3854 );
3855
3856 // Blur the editor so that it displays placeholder text.
3857 cx.blur();
3858 })
3859 .unwrap();
3860
3861 let mut element = EditorElement::new(&editor, style);
3862 let state = cx
3863 .update_window(window.into(), |view, cx| {
3864 cx.with_element_context(|cx| {
3865 cx.with_view_id(view.entity_id(), |cx| {
3866 element.compute_layout(
3867 Bounds {
3868 origin: point(px(500.), px(500.)),
3869 size: size(px(500.), px(500.)),
3870 },
3871 cx,
3872 )
3873 })
3874 })
3875 })
3876 .unwrap();
3877 let size = state.position_map.size;
3878
3879 assert_eq!(state.position_map.line_layouts.len(), 4);
3880 assert_eq!(
3881 state
3882 .line_numbers
3883 .iter()
3884 .map(Option::is_some)
3885 .collect::<Vec<_>>(),
3886 &[false, false, false, true]
3887 );
3888
3889 // Don't panic.
3890 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3891 cx.update_window(window.into(), |_, cx| {
3892 cx.with_element_context(|cx| element.paint(bounds, &mut (), cx))
3893 })
3894 .unwrap()
3895 }
3896
3897 #[gpui::test]
3898 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3899 const TAB_SIZE: u32 = 4;
3900
3901 let input_text = "\t \t|\t| a b";
3902 let expected_invisibles = vec![
3903 Invisible::Tab {
3904 line_start_offset: 0,
3905 },
3906 Invisible::Whitespace {
3907 line_offset: TAB_SIZE as usize,
3908 },
3909 Invisible::Tab {
3910 line_start_offset: TAB_SIZE as usize + 1,
3911 },
3912 Invisible::Tab {
3913 line_start_offset: TAB_SIZE as usize * 2 + 1,
3914 },
3915 Invisible::Whitespace {
3916 line_offset: TAB_SIZE as usize * 3 + 1,
3917 },
3918 Invisible::Whitespace {
3919 line_offset: TAB_SIZE as usize * 3 + 3,
3920 },
3921 ];
3922 assert_eq!(
3923 expected_invisibles.len(),
3924 input_text
3925 .chars()
3926 .filter(|initial_char| initial_char.is_whitespace())
3927 .count(),
3928 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3929 );
3930
3931 init_test(cx, |s| {
3932 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3933 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3934 });
3935
3936 let actual_invisibles =
3937 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3938
3939 assert_eq!(expected_invisibles, actual_invisibles);
3940 }
3941
3942 #[gpui::test]
3943 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3944 init_test(cx, |s| {
3945 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3946 s.defaults.tab_size = NonZeroU32::new(4);
3947 });
3948
3949 for editor_mode_without_invisibles in [
3950 EditorMode::SingleLine,
3951 EditorMode::AutoHeight { max_lines: 100 },
3952 ] {
3953 let invisibles = collect_invisibles_from_new_editor(
3954 cx,
3955 editor_mode_without_invisibles,
3956 "\t\t\t| | a b",
3957 px(500.0),
3958 );
3959 assert!(invisibles.is_empty(),
3960 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3961 }
3962 }
3963
3964 #[gpui::test]
3965 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3966 let tab_size = 4;
3967 let input_text = "a\tbcd ".repeat(9);
3968 let repeated_invisibles = [
3969 Invisible::Tab {
3970 line_start_offset: 1,
3971 },
3972 Invisible::Whitespace {
3973 line_offset: tab_size as usize + 3,
3974 },
3975 Invisible::Whitespace {
3976 line_offset: tab_size as usize + 4,
3977 },
3978 Invisible::Whitespace {
3979 line_offset: tab_size as usize + 5,
3980 },
3981 ];
3982 let expected_invisibles = std::iter::once(repeated_invisibles)
3983 .cycle()
3984 .take(9)
3985 .flatten()
3986 .collect::<Vec<_>>();
3987 assert_eq!(
3988 expected_invisibles.len(),
3989 input_text
3990 .chars()
3991 .filter(|initial_char| initial_char.is_whitespace())
3992 .count(),
3993 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3994 );
3995 info!("Expected invisibles: {expected_invisibles:?}");
3996
3997 init_test(cx, |_| {});
3998
3999 // Put the same string with repeating whitespace pattern into editors of various size,
4000 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4001 let resize_step = 10.0;
4002 let mut editor_width = 200.0;
4003 while editor_width <= 1000.0 {
4004 update_test_language_settings(cx, |s| {
4005 s.defaults.tab_size = NonZeroU32::new(tab_size);
4006 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4007 s.defaults.preferred_line_length = Some(editor_width as u32);
4008 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4009 });
4010
4011 let actual_invisibles = collect_invisibles_from_new_editor(
4012 cx,
4013 EditorMode::Full,
4014 &input_text,
4015 px(editor_width),
4016 );
4017
4018 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4019 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4020 let mut i = 0;
4021 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4022 i = actual_index;
4023 match expected_invisibles.get(i) {
4024 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4025 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4026 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4027 _ => {
4028 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4029 }
4030 },
4031 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4032 }
4033 }
4034 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4035 assert!(
4036 missing_expected_invisibles.is_empty(),
4037 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4038 );
4039
4040 editor_width += resize_step;
4041 }
4042 }
4043
4044 fn collect_invisibles_from_new_editor(
4045 cx: &mut TestAppContext,
4046 editor_mode: EditorMode,
4047 input_text: &str,
4048 editor_width: Pixels,
4049 ) -> Vec<Invisible> {
4050 info!(
4051 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4052 editor_width.0
4053 );
4054 let window = cx.add_window(|cx| {
4055 let buffer = MultiBuffer::build_simple(&input_text, cx);
4056 Editor::new(editor_mode, buffer, None, cx)
4057 });
4058 let editor = window.root(cx).unwrap();
4059 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4060 let mut element = EditorElement::new(&editor, style);
4061 window
4062 .update(cx, |editor, cx| {
4063 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4064 editor.set_wrap_width(Some(editor_width), cx);
4065 })
4066 .unwrap();
4067 let layout_state = cx
4068 .update_window(window.into(), |_, cx| {
4069 cx.with_element_context(|cx| {
4070 element.compute_layout(
4071 Bounds {
4072 origin: point(px(500.), px(500.)),
4073 size: size(px(500.), px(500.)),
4074 },
4075 cx,
4076 )
4077 })
4078 })
4079 .unwrap();
4080
4081 layout_state
4082 .position_map
4083 .line_layouts
4084 .iter()
4085 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
4086 .cloned()
4087 .collect()
4088 }
4089}
4090
4091pub fn register_action<T: Action>(
4092 view: &View<Editor>,
4093 cx: &mut WindowContext,
4094 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4095) {
4096 let view = view.clone();
4097 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4098 let action = action.downcast_ref().unwrap();
4099 if phase == DispatchPhase::Bubble {
4100 view.update(cx, |editor, cx| {
4101 listener(editor, action, cx);
4102 })
4103 }
4104 })
4105}
4106
4107fn compute_auto_height_layout(
4108 editor: &mut Editor,
4109 max_lines: usize,
4110 max_line_number_width: Pixels,
4111 known_dimensions: Size<Option<Pixels>>,
4112 cx: &mut ViewContext<Editor>,
4113) -> Option<Size<Pixels>> {
4114 let width = known_dimensions.width?;
4115 if let Some(height) = known_dimensions.height {
4116 return Some(size(width, height));
4117 }
4118
4119 let style = editor.style.as_ref().unwrap();
4120 let font_id = cx.text_system().resolve_font(&style.text.font());
4121 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4122 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4123 let em_width = cx
4124 .text_system()
4125 .typographic_bounds(font_id, font_size, 'm')
4126 .unwrap()
4127 .size
4128 .width;
4129
4130 let mut snapshot = editor.snapshot(cx);
4131 let gutter_dimensions =
4132 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4133
4134 editor.gutter_width = gutter_dimensions.width;
4135 let text_width = width - gutter_dimensions.width;
4136 let overscroll = size(em_width, px(0.));
4137
4138 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4139 if editor.set_wrap_width(Some(editor_width), cx) {
4140 snapshot = editor.snapshot(cx);
4141 }
4142
4143 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4144 let height = scroll_height
4145 .max(line_height)
4146 .min(line_height * max_lines as f32);
4147
4148 Some(size(width, height))
4149}