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_inlay_hints);
279 register_action(view, cx, hover_popover::hover);
280 register_action(view, cx, Editor::reveal_in_finder);
281 register_action(view, cx, Editor::copy_path);
282 register_action(view, cx, Editor::copy_relative_path);
283 register_action(view, cx, Editor::copy_highlight_json);
284 register_action(view, cx, Editor::copy_permalink_to_line);
285 register_action(view, cx, Editor::open_permalink_to_line);
286 register_action(view, cx, |editor, action, cx| {
287 if let Some(task) = editor.format(action, cx) {
288 task.detach_and_log_err(cx);
289 } else {
290 cx.propagate();
291 }
292 });
293 register_action(view, cx, Editor::restart_language_server);
294 register_action(view, cx, Editor::show_character_palette);
295 register_action(view, cx, |editor, action, cx| {
296 if let Some(task) = editor.confirm_completion(action, cx) {
297 task.detach_and_log_err(cx);
298 } else {
299 cx.propagate();
300 }
301 });
302 register_action(view, cx, |editor, action, cx| {
303 if let Some(task) = editor.confirm_code_action(action, cx) {
304 task.detach_and_log_err(cx);
305 } else {
306 cx.propagate();
307 }
308 });
309 register_action(view, cx, |editor, action, cx| {
310 if let Some(task) = editor.rename(action, cx) {
311 task.detach_and_log_err(cx);
312 } else {
313 cx.propagate();
314 }
315 });
316 register_action(view, cx, |editor, action, cx| {
317 if let Some(task) = editor.confirm_rename(action, cx) {
318 task.detach_and_log_err(cx);
319 } else {
320 cx.propagate();
321 }
322 });
323 register_action(view, cx, |editor, action, cx| {
324 if let Some(task) = editor.find_all_references(action, cx) {
325 task.detach_and_log_err(cx);
326 } else {
327 cx.propagate();
328 }
329 });
330 register_action(view, cx, Editor::next_copilot_suggestion);
331 register_action(view, cx, Editor::previous_copilot_suggestion);
332 register_action(view, cx, Editor::copilot_suggest);
333 register_action(view, cx, Editor::context_menu_first);
334 register_action(view, cx, Editor::context_menu_prev);
335 register_action(view, cx, Editor::context_menu_next);
336 register_action(view, cx, Editor::context_menu_last);
337 register_action(view, cx, Editor::display_cursor_names);
338 register_action(view, cx, Editor::unique_lines_case_insensitive);
339 register_action(view, cx, Editor::unique_lines_case_sensitive);
340 }
341
342 fn register_key_listeners(
343 &self,
344 cx: &mut ElementContext,
345 text_bounds: Bounds<Pixels>,
346 layout: &LayoutState,
347 ) {
348 let position_map = layout.position_map.clone();
349 let stacking_order = cx.stacking_order().clone();
350 cx.on_key_event({
351 let editor = self.editor.clone();
352 move |event: &ModifiersChangedEvent, phase, cx| {
353 if phase != DispatchPhase::Bubble {
354 return;
355 }
356
357 editor.update(cx, |editor, cx| {
358 Self::modifiers_changed(
359 editor,
360 event,
361 &position_map,
362 text_bounds,
363 &stacking_order,
364 cx,
365 )
366 })
367 }
368 });
369 }
370
371 fn modifiers_changed(
372 editor: &mut Editor,
373 event: &ModifiersChangedEvent,
374 position_map: &PositionMap,
375 text_bounds: Bounds<Pixels>,
376 stacking_order: &StackingOrder,
377 cx: &mut ViewContext<Editor>,
378 ) {
379 let mouse_position = cx.mouse_position();
380 if !text_bounds.contains(&mouse_position)
381 || !cx.was_top_layer(&mouse_position, stacking_order)
382 {
383 return;
384 }
385
386 editor.update_hovered_link(
387 position_map.point_for_position(text_bounds, mouse_position),
388 &position_map.snapshot,
389 event.modifiers,
390 cx,
391 )
392 }
393
394 fn mouse_left_down(
395 editor: &mut Editor,
396 event: &MouseDownEvent,
397 position_map: &PositionMap,
398 text_bounds: Bounds<Pixels>,
399 gutter_bounds: Bounds<Pixels>,
400 stacking_order: &StackingOrder,
401 cx: &mut ViewContext<Editor>,
402 ) {
403 let mut click_count = event.click_count;
404 let modifiers = event.modifiers;
405
406 if cx.default_prevented() {
407 return;
408 } else if gutter_bounds.contains(&event.position) {
409 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
410 } else if !text_bounds.contains(&event.position) {
411 return;
412 }
413 if !cx.was_top_layer(&event.position, stacking_order) {
414 return;
415 }
416
417 let point_for_position = position_map.point_for_position(text_bounds, event.position);
418 let position = point_for_position.previous_valid;
419 if modifiers.shift && modifiers.alt {
420 editor.select(
421 SelectPhase::BeginColumnar {
422 position,
423 goal_column: point_for_position.exact_unclipped.column(),
424 },
425 cx,
426 );
427 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
428 editor.select(
429 SelectPhase::Extend {
430 position,
431 click_count,
432 },
433 cx,
434 );
435 } else {
436 editor.select(
437 SelectPhase::Begin {
438 position,
439 add: modifiers.alt,
440 click_count,
441 },
442 cx,
443 );
444 }
445
446 cx.stop_propagation();
447 }
448
449 fn mouse_right_down(
450 editor: &mut Editor,
451 event: &MouseDownEvent,
452 position_map: &PositionMap,
453 text_bounds: Bounds<Pixels>,
454 cx: &mut ViewContext<Editor>,
455 ) {
456 if !text_bounds.contains(&event.position) {
457 return;
458 }
459 let point_for_position = position_map.point_for_position(text_bounds, event.position);
460 mouse_context_menu::deploy_context_menu(
461 editor,
462 event.position,
463 point_for_position.previous_valid,
464 cx,
465 );
466 cx.stop_propagation();
467 }
468
469 fn mouse_up(
470 editor: &mut Editor,
471 event: &MouseUpEvent,
472 position_map: &PositionMap,
473 text_bounds: Bounds<Pixels>,
474 interactive_bounds: &InteractiveBounds,
475 stacking_order: &StackingOrder,
476 cx: &mut ViewContext<Editor>,
477 ) {
478 let end_selection = editor.has_pending_selection();
479 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
480
481 if end_selection {
482 editor.select(SelectPhase::End, cx);
483 }
484
485 if interactive_bounds.visibly_contains(&event.position, cx)
486 && !pending_nonempty_selections
487 && event.modifiers.command
488 && text_bounds.contains(&event.position)
489 && cx.was_top_layer(&event.position, stacking_order)
490 {
491 let point = position_map.point_for_position(text_bounds, event.position);
492 editor.handle_click_hovered_link(point, event.modifiers, cx);
493
494 cx.stop_propagation();
495 } else if end_selection {
496 cx.stop_propagation();
497 }
498 }
499
500 fn mouse_dragged(
501 editor: &mut Editor,
502 event: &MouseMoveEvent,
503 position_map: &PositionMap,
504 text_bounds: Bounds<Pixels>,
505 _gutter_bounds: Bounds<Pixels>,
506 _stacking_order: &StackingOrder,
507 cx: &mut ViewContext<Editor>,
508 ) {
509 if !editor.has_pending_selection() {
510 return;
511 }
512
513 let point_for_position = position_map.point_for_position(text_bounds, event.position);
514 let mut scroll_delta = gpui::Point::<f32>::default();
515 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
516 let top = text_bounds.origin.y + vertical_margin;
517 let bottom = text_bounds.lower_left().y - vertical_margin;
518 if event.position.y < top {
519 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
520 }
521 if event.position.y > bottom {
522 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
523 }
524
525 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
526 let left = text_bounds.origin.x + horizontal_margin;
527 let right = text_bounds.upper_right().x - horizontal_margin;
528 if event.position.x < left {
529 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
530 }
531 if event.position.x > right {
532 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
533 }
534
535 editor.select(
536 SelectPhase::Update {
537 position: point_for_position.previous_valid,
538 goal_column: point_for_position.exact_unclipped.column(),
539 scroll_delta,
540 },
541 cx,
542 );
543 }
544
545 fn mouse_moved(
546 editor: &mut Editor,
547 event: &MouseMoveEvent,
548 position_map: &PositionMap,
549 text_bounds: Bounds<Pixels>,
550 gutter_bounds: Bounds<Pixels>,
551 stacking_order: &StackingOrder,
552 cx: &mut ViewContext<Editor>,
553 ) {
554 let modifiers = event.modifiers;
555 let text_hovered = text_bounds.contains(&event.position);
556 let gutter_hovered = gutter_bounds.contains(&event.position);
557 let was_top = cx.was_top_layer(&event.position, stacking_order);
558
559 editor.set_gutter_hovered(gutter_hovered, cx);
560
561 // Don't trigger hover popover if mouse is hovering over context menu
562 if text_hovered && was_top {
563 let point_for_position = position_map.point_for_position(text_bounds, event.position);
564
565 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
566
567 if let Some(point) = point_for_position.as_valid() {
568 hover_at(editor, Some(point), cx);
569 Self::update_visible_cursor(editor, point, position_map, cx);
570 }
571 } else {
572 editor.hide_hovered_link(cx);
573 hover_at(editor, None, cx);
574 if gutter_hovered && was_top {
575 cx.stop_propagation();
576 }
577 }
578 }
579
580 fn update_visible_cursor(
581 editor: &mut Editor,
582 point: DisplayPoint,
583 position_map: &PositionMap,
584 cx: &mut ViewContext<Editor>,
585 ) {
586 let snapshot = &position_map.snapshot;
587 let Some(hub) = editor.collaboration_hub() else {
588 return;
589 };
590 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
591 ..DisplayPoint::new(
592 point.row(),
593 (point.column() + 1).min(snapshot.line_len(point.row())),
594 );
595
596 let range = snapshot
597 .buffer_snapshot
598 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
599 ..snapshot
600 .buffer_snapshot
601 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
602
603 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
604 return;
605 };
606 let key = crate::HoveredCursor {
607 replica_id: selection.replica_id,
608 selection_id: selection.selection.id,
609 };
610 editor.hovered_cursors.insert(
611 key.clone(),
612 cx.spawn(|editor, mut cx| async move {
613 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
614 editor
615 .update(&mut cx, |editor, cx| {
616 editor.hovered_cursors.remove(&key);
617 cx.notify();
618 })
619 .ok();
620 }),
621 );
622 cx.notify()
623 }
624
625 fn paint_background(
626 &self,
627 gutter_bounds: Bounds<Pixels>,
628 text_bounds: Bounds<Pixels>,
629 layout: &LayoutState,
630 cx: &mut ElementContext,
631 ) {
632 let bounds = gutter_bounds.union(&text_bounds);
633 let scroll_top =
634 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
635 let gutter_bg = cx.theme().colors().editor_gutter_background;
636 cx.paint_quad(fill(gutter_bounds, gutter_bg));
637 cx.paint_quad(fill(text_bounds, self.style.background));
638
639 if let EditorMode::Full = layout.mode {
640 let mut active_rows = layout.active_rows.iter().peekable();
641 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
642 let mut end_row = *start_row;
643 while active_rows.peek().map_or(false, |r| {
644 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
645 }) {
646 active_rows.next().unwrap();
647 end_row += 1;
648 }
649
650 if !contains_non_empty_selection {
651 let origin = point(
652 bounds.origin.x,
653 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
654 - scroll_top,
655 );
656 let size = size(
657 bounds.size.width,
658 layout.position_map.line_height * (end_row - start_row + 1) as f32,
659 );
660 let active_line_bg = cx.theme().colors().editor_active_line_background;
661 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
662 }
663 }
664
665 if let Some(highlighted_rows) = &layout.highlighted_rows {
666 let origin = point(
667 bounds.origin.x,
668 bounds.origin.y
669 + (layout.position_map.line_height * highlighted_rows.start as f32)
670 - scroll_top,
671 );
672 let size = size(
673 bounds.size.width,
674 layout.position_map.line_height * highlighted_rows.len() as f32,
675 );
676 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
677 cx.paint_quad(fill(Bounds { origin, size }, highlighted_line_bg));
678 }
679
680 let scroll_left =
681 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
682
683 for (wrap_position, active) in layout.wrap_guides.iter() {
684 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
685 - scroll_left;
686
687 if x < text_bounds.origin.x
688 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
689 {
690 continue;
691 }
692
693 let color = if *active {
694 cx.theme().colors().editor_active_wrap_guide
695 } else {
696 cx.theme().colors().editor_wrap_guide
697 };
698 cx.paint_quad(fill(
699 Bounds {
700 origin: point(x, text_bounds.origin.y),
701 size: size(px(1.), text_bounds.size.height),
702 },
703 color,
704 ));
705 }
706 }
707 }
708
709 fn paint_gutter(
710 &mut self,
711 bounds: Bounds<Pixels>,
712 layout: &mut LayoutState,
713 cx: &mut ElementContext,
714 ) {
715 let line_height = layout.position_map.line_height;
716
717 let scroll_position = layout.position_map.snapshot.scroll_position();
718 let scroll_top = scroll_position.y * line_height;
719
720 if bounds.contains(&cx.mouse_position()) {
721 let stacking_order = cx.stacking_order().clone();
722 cx.set_cursor_style(CursorStyle::Arrow, stacking_order);
723 }
724
725 let show_git_gutter = matches!(
726 ProjectSettings::get_global(cx).git.git_gutter,
727 Some(GitGutterSetting::TrackedFiles)
728 );
729
730 if show_git_gutter {
731 Self::paint_diff_hunks(bounds, layout, cx);
732 }
733
734 let gutter_settings = EditorSettings::get_global(cx).gutter;
735
736 for (ix, line) in layout.line_numbers.iter().enumerate() {
737 if let Some(line) = line {
738 let line_origin = bounds.origin
739 + point(
740 bounds.size.width - line.width - layout.gutter_dimensions.right_padding,
741 ix as f32 * line_height - (scroll_top % line_height),
742 );
743
744 line.paint(line_origin, line_height, cx).log_err();
745 }
746 }
747
748 cx.with_z_index(1, |cx| {
749 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
750 if let Some(fold_indicator) = fold_indicator {
751 debug_assert!(gutter_settings.folds);
752 let mut fold_indicator = fold_indicator.into_any_element();
753 let available_space = size(
754 AvailableSpace::MinContent,
755 AvailableSpace::Definite(line_height * 0.55),
756 );
757 let fold_indicator_size = fold_indicator.measure(available_space, cx);
758
759 let position = point(
760 bounds.size.width - layout.gutter_dimensions.right_padding,
761 ix as f32 * line_height - (scroll_top % line_height),
762 );
763 let centering_offset = point(
764 (layout.gutter_dimensions.right_padding + layout.gutter_dimensions.margin
765 - fold_indicator_size.width)
766 / 2.,
767 (line_height - fold_indicator_size.height) / 2.,
768 );
769 let origin = bounds.origin + position + centering_offset;
770 fold_indicator.draw(origin, available_space, cx);
771 }
772 }
773
774 if let Some(indicator) = layout.code_actions_indicator.take() {
775 debug_assert!(gutter_settings.code_actions);
776 let mut button = indicator.button.into_any_element();
777 let available_space = size(
778 AvailableSpace::MinContent,
779 AvailableSpace::Definite(line_height),
780 );
781 let indicator_size = button.measure(available_space, cx);
782
783 let mut x = Pixels::ZERO;
784 let mut y = indicator.row as f32 * line_height - scroll_top;
785 // Center indicator.
786 x += (layout.gutter_dimensions.margin + layout.gutter_dimensions.left_padding
787 - indicator_size.width)
788 / 2.;
789 y += (line_height - indicator_size.height) / 2.;
790
791 button.draw(bounds.origin + point(x, y), available_space, cx);
792 }
793 });
794 }
795
796 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut ElementContext) {
797 let line_height = layout.position_map.line_height;
798
799 let scroll_position = layout.position_map.snapshot.scroll_position();
800 let scroll_top = scroll_position.y * line_height;
801
802 for hunk in &layout.display_hunks {
803 let (display_row_range, status) = match hunk {
804 //TODO: This rendering is entirely a horrible hack
805 &DisplayDiffHunk::Folded { display_row: row } => {
806 let start_y = row as f32 * line_height - scroll_top;
807 let end_y = start_y + line_height;
808
809 let width = 0.275 * line_height;
810 let highlight_origin = bounds.origin + point(-width, start_y);
811 let highlight_size = size(width * 2., end_y - start_y);
812 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
813 cx.paint_quad(quad(
814 highlight_bounds,
815 Corners::all(1. * line_height),
816 cx.theme().status().modified,
817 Edges::default(),
818 transparent_black(),
819 ));
820
821 continue;
822 }
823
824 DisplayDiffHunk::Unfolded {
825 display_row_range,
826 status,
827 } => (display_row_range, status),
828 };
829
830 let color = match status {
831 DiffHunkStatus::Added => cx.theme().status().created,
832 DiffHunkStatus::Modified => cx.theme().status().modified,
833
834 //TODO: This rendering is entirely a horrible hack
835 DiffHunkStatus::Removed => {
836 let row = display_row_range.start;
837
838 let offset = line_height / 2.;
839 let start_y = row as f32 * line_height - offset - scroll_top;
840 let end_y = start_y + line_height;
841
842 let width = 0.275 * line_height;
843 let highlight_origin = bounds.origin + point(-width, start_y);
844 let highlight_size = size(width * 2., end_y - start_y);
845 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
846 cx.paint_quad(quad(
847 highlight_bounds,
848 Corners::all(1. * line_height),
849 cx.theme().status().deleted,
850 Edges::default(),
851 transparent_black(),
852 ));
853
854 continue;
855 }
856 };
857
858 let start_row = display_row_range.start;
859 let end_row = display_row_range.end;
860 // If we're in a multibuffer, row range span might include an
861 // excerpt header, so if we were to draw the marker straight away,
862 // the hunk might include the rows of that header.
863 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
864 // Instead, we simply check whether the range we're dealing with includes
865 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
866 let end_row_in_current_excerpt = layout
867 .position_map
868 .snapshot
869 .blocks_in_range(start_row..end_row)
870 .find_map(|(start_row, block)| {
871 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
872 Some(start_row)
873 } else {
874 None
875 }
876 })
877 .unwrap_or(end_row);
878
879 let start_y = start_row as f32 * line_height - scroll_top;
880 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
881
882 let width = 0.275 * line_height;
883 let highlight_origin = bounds.origin + point(-width, start_y);
884 let highlight_size = size(width * 2., end_y - start_y);
885 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
886 cx.paint_quad(quad(
887 highlight_bounds,
888 Corners::all(0.05 * line_height),
889 color,
890 Edges::default(),
891 transparent_black(),
892 ));
893 }
894 }
895
896 fn paint_text(
897 &mut self,
898 text_bounds: Bounds<Pixels>,
899 layout: &mut LayoutState,
900 cx: &mut ElementContext,
901 ) {
902 let start_row = layout.visible_display_row_range.start;
903 // 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.
904 let content_origin =
905 text_bounds.origin + point(layout.gutter_dimensions.margin, Pixels::ZERO);
906 let line_end_overshoot = 0.15 * layout.position_map.line_height;
907 let whitespace_setting = self
908 .editor
909 .read(cx)
910 .buffer
911 .read(cx)
912 .settings_at(0, cx)
913 .show_whitespaces;
914
915 cx.with_content_mask(
916 Some(ContentMask {
917 bounds: text_bounds,
918 }),
919 |cx| {
920 let interactive_text_bounds = InteractiveBounds {
921 bounds: text_bounds,
922 stacking_order: cx.stacking_order().clone(),
923 };
924 if text_bounds.contains(&cx.mouse_position()) {
925 if self
926 .editor
927 .read(cx)
928 .hovered_link_state
929 .as_ref()
930 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
931 {
932 cx.set_cursor_style(
933 CursorStyle::PointingHand,
934 interactive_text_bounds.stacking_order.clone(),
935 );
936 } else {
937 cx.set_cursor_style(
938 CursorStyle::IBeam,
939 interactive_text_bounds.stacking_order.clone(),
940 );
941 }
942 }
943
944 let fold_corner_radius = 0.15 * layout.position_map.line_height;
945 cx.with_element_id(Some("folds"), |cx| {
946 let snapshot = &layout.position_map.snapshot;
947
948 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
949 let fold_range = fold.range.clone();
950 let display_range = fold.range.start.to_display_point(&snapshot)
951 ..fold.range.end.to_display_point(&snapshot);
952 debug_assert_eq!(display_range.start.row(), display_range.end.row());
953 let row = display_range.start.row();
954 debug_assert!(row < layout.visible_display_row_range.end);
955 let Some(line_layout) = &layout
956 .position_map
957 .line_layouts
958 .get((row - layout.visible_display_row_range.start) as usize)
959 .map(|l| &l.line)
960 else {
961 continue;
962 };
963
964 let start_x = content_origin.x
965 + line_layout.x_for_index(display_range.start.column() as usize)
966 - layout.position_map.scroll_position.x;
967 let start_y = content_origin.y
968 + row as f32 * layout.position_map.line_height
969 - layout.position_map.scroll_position.y;
970 let end_x = content_origin.x
971 + line_layout.x_for_index(display_range.end.column() as usize)
972 - layout.position_map.scroll_position.x;
973
974 let fold_bounds = Bounds {
975 origin: point(start_x, start_y),
976 size: size(end_x - start_x, layout.position_map.line_height),
977 };
978
979 let fold_background = cx.with_z_index(1, |cx| {
980 div()
981 .id(fold.id)
982 .size_full()
983 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
984 .on_click(cx.listener_for(
985 &self.editor,
986 move |editor: &mut Editor, _, cx| {
987 editor.unfold_ranges(
988 [fold_range.start..fold_range.end],
989 true,
990 false,
991 cx,
992 );
993 cx.stop_propagation();
994 },
995 ))
996 .draw_and_update_state(
997 fold_bounds.origin,
998 fold_bounds.size,
999 cx,
1000 |fold_element_state, cx| {
1001 if fold_element_state.is_active() {
1002 cx.theme().colors().ghost_element_active
1003 } else if fold_bounds.contains(&cx.mouse_position()) {
1004 cx.theme().colors().ghost_element_hover
1005 } else {
1006 cx.theme().colors().ghost_element_background
1007 }
1008 },
1009 )
1010 });
1011
1012 self.paint_highlighted_range(
1013 display_range.clone(),
1014 fold_background,
1015 fold_corner_radius,
1016 fold_corner_radius * 2.,
1017 layout,
1018 content_origin,
1019 text_bounds,
1020 cx,
1021 );
1022 }
1023 });
1024
1025 for (range, color) in &layout.highlighted_ranges {
1026 self.paint_highlighted_range(
1027 range.clone(),
1028 *color,
1029 Pixels::ZERO,
1030 line_end_overshoot,
1031 layout,
1032 content_origin,
1033 text_bounds,
1034 cx,
1035 );
1036 }
1037
1038 let mut cursors = SmallVec::<[Cursor; 32]>::new();
1039 let corner_radius = 0.15 * layout.position_map.line_height;
1040 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
1041
1042 for (participant_ix, (player_color, selections)) in
1043 layout.selections.iter().enumerate()
1044 {
1045 for selection in selections.into_iter() {
1046 self.paint_highlighted_range(
1047 selection.range.clone(),
1048 player_color.selection,
1049 corner_radius,
1050 corner_radius * 2.,
1051 layout,
1052 content_origin,
1053 text_bounds,
1054 cx,
1055 );
1056
1057 if selection.is_local && !selection.range.is_empty() {
1058 invisible_display_ranges.push(selection.range.clone());
1059 }
1060
1061 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
1062 let cursor_position = selection.head;
1063 if layout
1064 .visible_display_row_range
1065 .contains(&cursor_position.row())
1066 {
1067 let cursor_row_layout = &layout.position_map.line_layouts
1068 [(cursor_position.row() - start_row) as usize]
1069 .line;
1070 let cursor_column = cursor_position.column() as usize;
1071
1072 let cursor_character_x =
1073 cursor_row_layout.x_for_index(cursor_column);
1074 let mut block_width = cursor_row_layout
1075 .x_for_index(cursor_column + 1)
1076 - cursor_character_x;
1077 if block_width == Pixels::ZERO {
1078 block_width = layout.position_map.em_width;
1079 }
1080 let block_text = if let CursorShape::Block = selection.cursor_shape
1081 {
1082 layout
1083 .position_map
1084 .snapshot
1085 .chars_at(cursor_position)
1086 .next()
1087 .and_then(|(character, _)| {
1088 let text = if character == '\n' {
1089 SharedString::from(" ")
1090 } else {
1091 SharedString::from(character.to_string())
1092 };
1093 let len = text.len();
1094 cx.text_system()
1095 .shape_line(
1096 text,
1097 cursor_row_layout.font_size,
1098 &[TextRun {
1099 len,
1100 font: self.style.text.font(),
1101 color: self.style.background,
1102 background_color: None,
1103 strikethrough: None,
1104 underline: None,
1105 }],
1106 )
1107 .log_err()
1108 })
1109 } else {
1110 None
1111 };
1112
1113 let x = cursor_character_x - layout.position_map.scroll_position.x;
1114 let y = cursor_position.row() as f32
1115 * layout.position_map.line_height
1116 - layout.position_map.scroll_position.y;
1117 if selection.is_newest {
1118 self.editor.update(cx, |editor, _| {
1119 editor.pixel_position_of_newest_cursor = Some(point(
1120 text_bounds.origin.x + x + block_width / 2.,
1121 text_bounds.origin.y
1122 + y
1123 + layout.position_map.line_height / 2.,
1124 ))
1125 });
1126 }
1127
1128 cursors.push(Cursor {
1129 color: player_color.cursor,
1130 block_width,
1131 origin: point(x, y),
1132 line_height: layout.position_map.line_height,
1133 shape: selection.cursor_shape,
1134 block_text,
1135 cursor_name: selection.user_name.clone().map(|name| {
1136 CursorName {
1137 string: name,
1138 color: self.style.background,
1139 is_top_row: cursor_position.row() == 0,
1140 z_index: (participant_ix % 256).try_into().unwrap(),
1141 }
1142 }),
1143 });
1144 }
1145 }
1146 }
1147 }
1148
1149 for (ix, line_with_invisibles) in
1150 layout.position_map.line_layouts.iter().enumerate()
1151 {
1152 let row = start_row + ix as u32;
1153 line_with_invisibles.draw(
1154 layout,
1155 row,
1156 content_origin,
1157 whitespace_setting,
1158 &invisible_display_ranges,
1159 cx,
1160 )
1161 }
1162
1163 cx.with_z_index(0, |cx| self.paint_redactions(text_bounds, &layout, cx));
1164
1165 cx.with_z_index(1, |cx| {
1166 for cursor in cursors {
1167 cursor.paint(content_origin, cx);
1168 }
1169 });
1170 },
1171 )
1172 }
1173
1174 fn paint_redactions(
1175 &mut self,
1176 text_bounds: Bounds<Pixels>,
1177 layout: &LayoutState,
1178 cx: &mut ElementContext,
1179 ) {
1180 let content_origin =
1181 text_bounds.origin + point(layout.gutter_dimensions.margin, Pixels::ZERO);
1182 let line_end_overshoot = layout.line_end_overshoot();
1183
1184 // A softer than perfect black
1185 let redaction_color = gpui::rgb(0x0e1111);
1186
1187 for range in layout.redacted_ranges.iter() {
1188 self.paint_highlighted_range(
1189 range.clone(),
1190 redaction_color.into(),
1191 Pixels::ZERO,
1192 line_end_overshoot,
1193 layout,
1194 content_origin,
1195 text_bounds,
1196 cx,
1197 );
1198 }
1199 }
1200
1201 fn paint_overlays(
1202 &mut self,
1203 text_bounds: Bounds<Pixels>,
1204 layout: &mut LayoutState,
1205 cx: &mut ElementContext,
1206 ) {
1207 let content_origin =
1208 text_bounds.origin + point(layout.gutter_dimensions.margin, Pixels::ZERO);
1209 let start_row = layout.visible_display_row_range.start;
1210 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1211 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1212 let context_menu_size = context_menu.measure(available_space, cx);
1213
1214 let cursor_row_layout =
1215 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1216 let x = cursor_row_layout.x_for_index(position.column() as usize)
1217 - layout.position_map.scroll_position.x;
1218 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1219 - layout.position_map.scroll_position.y;
1220 let mut list_origin = content_origin + point(x, y);
1221 let list_width = context_menu_size.width;
1222 let list_height = context_menu_size.height;
1223
1224 // Snap the right edge of the list to the right edge of the window if
1225 // its horizontal bounds overflow.
1226 if list_origin.x + list_width > cx.viewport_size().width {
1227 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1228 }
1229
1230 if list_origin.y + list_height > text_bounds.lower_right().y {
1231 list_origin.y -= layout.position_map.line_height + list_height;
1232 }
1233
1234 cx.break_content_mask(|cx| context_menu.draw(list_origin, available_space, cx));
1235 }
1236
1237 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1238 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1239
1240 // This is safe because we check on layout whether the required row is available
1241 let hovered_row_layout =
1242 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1243
1244 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1245 // height. This is the size we will use to decide whether to render popovers above or below
1246 // the hovered line.
1247 let first_size = hover_popovers[0].measure(available_space, cx);
1248 let height_to_reserve =
1249 first_size.height + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1250
1251 // Compute Hovered Point
1252 let x = hovered_row_layout.x_for_index(position.column() as usize)
1253 - layout.position_map.scroll_position.x;
1254 let y = position.row() as f32 * layout.position_map.line_height
1255 - layout.position_map.scroll_position.y;
1256 let hovered_point = content_origin + point(x, y);
1257
1258 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1259 // There is enough space above. Render popovers above the hovered point
1260 let mut current_y = hovered_point.y;
1261 for mut hover_popover in hover_popovers {
1262 let size = hover_popover.measure(available_space, cx);
1263 let mut popover_origin = point(hovered_point.x, current_y - size.height);
1264
1265 let x_out_of_bounds =
1266 text_bounds.upper_right().x - (popover_origin.x + size.width);
1267 if x_out_of_bounds < Pixels::ZERO {
1268 popover_origin.x = popover_origin.x + x_out_of_bounds;
1269 }
1270
1271 if cx.was_top_layer(&popover_origin, cx.stacking_order()) {
1272 cx.break_content_mask(|cx| {
1273 hover_popover.draw(popover_origin, available_space, cx)
1274 });
1275 }
1276
1277 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1278 }
1279 } else {
1280 // There is not enough space above. Render popovers below the hovered point
1281 let mut current_y = hovered_point.y + layout.position_map.line_height;
1282 for mut hover_popover in hover_popovers {
1283 let size = hover_popover.measure(available_space, cx);
1284 let mut popover_origin = point(hovered_point.x, current_y);
1285
1286 let x_out_of_bounds =
1287 text_bounds.upper_right().x - (popover_origin.x + size.width);
1288 if x_out_of_bounds < Pixels::ZERO {
1289 popover_origin.x = popover_origin.x + x_out_of_bounds;
1290 }
1291
1292 hover_popover.draw(popover_origin, available_space, cx);
1293
1294 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1295 }
1296 }
1297 }
1298
1299 if let Some(mouse_context_menu) = self.editor.read(cx).mouse_context_menu.as_ref() {
1300 let element = overlay()
1301 .position(mouse_context_menu.position)
1302 .child(mouse_context_menu.context_menu.clone())
1303 .anchor(AnchorCorner::TopLeft)
1304 .snap_to_window();
1305 element.into_any().draw(
1306 gpui::Point::default(),
1307 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1308 cx,
1309 );
1310 }
1311 }
1312
1313 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1314 bounds.upper_right().x - self.style.scrollbar_width
1315 }
1316
1317 fn paint_scrollbar(
1318 &mut self,
1319 bounds: Bounds<Pixels>,
1320 layout: &mut LayoutState,
1321 cx: &mut ElementContext,
1322 ) {
1323 if layout.mode != EditorMode::Full {
1324 return;
1325 }
1326
1327 // If a drag took place after we started dragging the scrollbar,
1328 // cancel the scrollbar drag.
1329 if cx.has_active_drag() {
1330 self.editor.update(cx, |editor, cx| {
1331 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1332 });
1333 }
1334
1335 let top = bounds.origin.y;
1336 let bottom = bounds.lower_left().y;
1337 let right = bounds.lower_right().x;
1338 let left = self.scrollbar_left(&bounds);
1339 let row_range = layout.scrollbar_row_range.clone();
1340 let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1341
1342 let mut height = bounds.size.height;
1343 let mut first_row_y_offset = px(0.0);
1344
1345 // Impose a minimum height on the scrollbar thumb
1346 let row_height = height / max_row;
1347 let min_thumb_height = layout.position_map.line_height;
1348 let thumb_height = (row_range.end - row_range.start) * row_height;
1349 if thumb_height < min_thumb_height {
1350 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1351 height -= min_thumb_height - thumb_height;
1352 }
1353
1354 let y_for_row = |row: f32| -> Pixels { top + first_row_y_offset + row * row_height };
1355
1356 let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1357 let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1358 let track_bounds = Bounds::from_corners(point(left, top), point(right, bottom));
1359 let thumb_bounds = Bounds::from_corners(point(left, thumb_top), point(right, thumb_bottom));
1360
1361 if layout.show_scrollbars {
1362 cx.paint_quad(quad(
1363 track_bounds,
1364 Corners::default(),
1365 cx.theme().colors().scrollbar_track_background,
1366 Edges {
1367 top: Pixels::ZERO,
1368 right: Pixels::ZERO,
1369 bottom: Pixels::ZERO,
1370 left: px(1.),
1371 },
1372 cx.theme().colors().scrollbar_track_border,
1373 ));
1374 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1375 if layout.is_singleton && scrollbar_settings.selections {
1376 let start_anchor = Anchor::min();
1377 let end_anchor = Anchor::max();
1378 let background_ranges = self
1379 .editor
1380 .read(cx)
1381 .background_highlight_row_ranges::<BufferSearchHighlights>(
1382 start_anchor..end_anchor,
1383 &layout.position_map.snapshot,
1384 50000,
1385 );
1386 for range in background_ranges {
1387 let start_y = y_for_row(range.start().row() as f32);
1388 let mut end_y = y_for_row(range.end().row() as f32);
1389 if end_y - start_y < px(1.) {
1390 end_y = start_y + px(1.);
1391 }
1392 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1393 cx.paint_quad(quad(
1394 bounds,
1395 Corners::default(),
1396 cx.theme().status().info,
1397 Edges {
1398 top: Pixels::ZERO,
1399 right: px(1.),
1400 bottom: Pixels::ZERO,
1401 left: px(1.),
1402 },
1403 cx.theme().colors().scrollbar_thumb_border,
1404 ));
1405 }
1406 }
1407
1408 if layout.is_singleton && scrollbar_settings.symbols_selections {
1409 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
1410 Anchor::min()..Anchor::max(),
1411 &layout.position_map.snapshot,
1412 cx.theme().colors(),
1413 );
1414 for hunk in selection_ranges {
1415 let start_display = Point::new(hunk.0.start.row(), 0)
1416 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1417 let end_display = Point::new(hunk.0.end.row(), 0)
1418 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1419 let start_y = y_for_row(start_display.row() as f32);
1420 let mut end_y = if hunk.0.start == hunk.0.end {
1421 y_for_row((end_display.row() + 1) as f32)
1422 } else {
1423 y_for_row((end_display.row()) as f32)
1424 };
1425
1426 if end_y - start_y < px(1.) {
1427 end_y = start_y + px(1.);
1428 }
1429 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1430
1431 cx.paint_quad(quad(
1432 bounds,
1433 Corners::default(),
1434 cx.theme().status().info,
1435 Edges {
1436 top: Pixels::ZERO,
1437 right: px(1.),
1438 bottom: Pixels::ZERO,
1439 left: px(1.),
1440 },
1441 cx.theme().colors().scrollbar_thumb_border,
1442 ));
1443 }
1444 }
1445
1446 if layout.is_singleton && scrollbar_settings.git_diff {
1447 for hunk in layout
1448 .position_map
1449 .snapshot
1450 .buffer_snapshot
1451 .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1452 {
1453 let start_display = Point::new(hunk.buffer_range.start, 0)
1454 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1455 let end_display = Point::new(hunk.buffer_range.end, 0)
1456 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1457 let start_y = y_for_row(start_display.row() as f32);
1458 let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1459 y_for_row((end_display.row() + 1) as f32)
1460 } else {
1461 y_for_row((end_display.row()) as f32)
1462 };
1463
1464 if end_y - start_y < px(1.) {
1465 end_y = start_y + px(1.);
1466 }
1467 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1468
1469 let color = match hunk.status() {
1470 DiffHunkStatus::Added => cx.theme().status().created,
1471 DiffHunkStatus::Modified => cx.theme().status().modified,
1472 DiffHunkStatus::Removed => cx.theme().status().deleted,
1473 };
1474 cx.paint_quad(quad(
1475 bounds,
1476 Corners::default(),
1477 color,
1478 Edges {
1479 top: Pixels::ZERO,
1480 right: px(1.),
1481 bottom: Pixels::ZERO,
1482 left: px(1.),
1483 },
1484 cx.theme().colors().scrollbar_thumb_border,
1485 ));
1486 }
1487 }
1488
1489 if layout.is_singleton && scrollbar_settings.diagnostics {
1490 let max_point = layout
1491 .position_map
1492 .snapshot
1493 .display_snapshot
1494 .buffer_snapshot
1495 .max_point();
1496
1497 let diagnostics = layout
1498 .position_map
1499 .snapshot
1500 .buffer_snapshot
1501 .diagnostics_in_range::<_, Point>(Point::zero()..max_point, false)
1502 // We want to sort by severity, in order to paint the most severe diagnostics last.
1503 .sorted_by_key(|diagnostic| std::cmp::Reverse(diagnostic.diagnostic.severity));
1504
1505 for diagnostic in diagnostics {
1506 let start_display = diagnostic
1507 .range
1508 .start
1509 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1510 let end_display = diagnostic
1511 .range
1512 .end
1513 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1514 let start_y = y_for_row(start_display.row() as f32);
1515 let mut end_y = if diagnostic.range.start == diagnostic.range.end {
1516 y_for_row((end_display.row() + 1) as f32)
1517 } else {
1518 y_for_row((end_display.row()) as f32)
1519 };
1520
1521 if end_y - start_y < px(1.) {
1522 end_y = start_y + px(1.);
1523 }
1524 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1525
1526 let color = match diagnostic.diagnostic.severity {
1527 DiagnosticSeverity::ERROR => cx.theme().status().error,
1528 DiagnosticSeverity::WARNING => cx.theme().status().warning,
1529 DiagnosticSeverity::INFORMATION => cx.theme().status().info,
1530 _ => cx.theme().status().hint,
1531 };
1532 cx.paint_quad(quad(
1533 bounds,
1534 Corners::default(),
1535 color,
1536 Edges {
1537 top: Pixels::ZERO,
1538 right: px(1.),
1539 bottom: Pixels::ZERO,
1540 left: px(1.),
1541 },
1542 cx.theme().colors().scrollbar_thumb_border,
1543 ));
1544 }
1545 }
1546
1547 cx.paint_quad(quad(
1548 thumb_bounds,
1549 Corners::default(),
1550 cx.theme().colors().scrollbar_thumb_background,
1551 Edges {
1552 top: Pixels::ZERO,
1553 right: px(1.),
1554 bottom: Pixels::ZERO,
1555 left: px(1.),
1556 },
1557 cx.theme().colors().scrollbar_thumb_border,
1558 ));
1559 }
1560
1561 let interactive_track_bounds = InteractiveBounds {
1562 bounds: track_bounds,
1563 stacking_order: cx.stacking_order().clone(),
1564 };
1565 let mut mouse_position = cx.mouse_position();
1566 if track_bounds.contains(&mouse_position) {
1567 cx.set_cursor_style(
1568 CursorStyle::Arrow,
1569 interactive_track_bounds.stacking_order.clone(),
1570 );
1571 }
1572
1573 cx.on_mouse_event({
1574 let editor = self.editor.clone();
1575 move |event: &MouseMoveEvent, phase, cx| {
1576 if phase == DispatchPhase::Capture {
1577 return;
1578 }
1579
1580 editor.update(cx, |editor, cx| {
1581 if event.pressed_button == Some(MouseButton::Left)
1582 && editor.scroll_manager.is_dragging_scrollbar()
1583 {
1584 let y = mouse_position.y;
1585 let new_y = event.position.y;
1586 if (track_bounds.top()..track_bounds.bottom()).contains(&y) {
1587 let mut position = editor.scroll_position(cx);
1588 position.y += (new_y - y) * (max_row as f32) / height;
1589 if position.y < 0.0 {
1590 position.y = 0.0;
1591 }
1592 editor.set_scroll_position(position, cx);
1593 }
1594
1595 mouse_position = event.position;
1596 cx.stop_propagation();
1597 } else {
1598 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1599 if interactive_track_bounds.visibly_contains(&event.position, cx) {
1600 editor.scroll_manager.show_scrollbar(cx);
1601 }
1602 }
1603 })
1604 }
1605 });
1606
1607 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
1608 cx.on_mouse_event({
1609 let editor = self.editor.clone();
1610 move |_: &MouseUpEvent, phase, cx| {
1611 if phase == DispatchPhase::Capture {
1612 return;
1613 }
1614
1615 editor.update(cx, |editor, cx| {
1616 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1617 cx.stop_propagation();
1618 });
1619 }
1620 });
1621 } else {
1622 cx.on_mouse_event({
1623 let editor = self.editor.clone();
1624 move |event: &MouseDownEvent, phase, cx| {
1625 if phase == DispatchPhase::Capture {
1626 return;
1627 }
1628
1629 editor.update(cx, |editor, cx| {
1630 if track_bounds.contains(&event.position) {
1631 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
1632
1633 let y = event.position.y;
1634 if y < thumb_top || thumb_bottom < y {
1635 let center_row =
1636 ((y - top) * max_row as f32 / height).round() as u32;
1637 let top_row = center_row
1638 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1639 let mut position = editor.scroll_position(cx);
1640 position.y = top_row as f32;
1641 editor.set_scroll_position(position, cx);
1642 } else {
1643 editor.scroll_manager.show_scrollbar(cx);
1644 }
1645
1646 cx.stop_propagation();
1647 }
1648 });
1649 }
1650 });
1651 }
1652 }
1653
1654 #[allow(clippy::too_many_arguments)]
1655 fn paint_highlighted_range(
1656 &self,
1657 range: Range<DisplayPoint>,
1658 color: Hsla,
1659 corner_radius: Pixels,
1660 line_end_overshoot: Pixels,
1661 layout: &LayoutState,
1662 content_origin: gpui::Point<Pixels>,
1663 bounds: Bounds<Pixels>,
1664 cx: &mut ElementContext,
1665 ) {
1666 let start_row = layout.visible_display_row_range.start;
1667 let end_row = layout.visible_display_row_range.end;
1668 if range.start != range.end {
1669 let row_range = if range.end.column() == 0 {
1670 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1671 } else {
1672 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1673 };
1674
1675 let highlighted_range = HighlightedRange {
1676 color,
1677 line_height: layout.position_map.line_height,
1678 corner_radius,
1679 start_y: content_origin.y
1680 + row_range.start as f32 * layout.position_map.line_height
1681 - layout.position_map.scroll_position.y,
1682 lines: row_range
1683 .into_iter()
1684 .map(|row| {
1685 let line_layout =
1686 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1687 HighlightedRangeLine {
1688 start_x: if row == range.start.row() {
1689 content_origin.x
1690 + line_layout.x_for_index(range.start.column() as usize)
1691 - layout.position_map.scroll_position.x
1692 } else {
1693 content_origin.x - layout.position_map.scroll_position.x
1694 },
1695 end_x: if row == range.end.row() {
1696 content_origin.x
1697 + line_layout.x_for_index(range.end.column() as usize)
1698 - layout.position_map.scroll_position.x
1699 } else {
1700 content_origin.x + line_layout.width + line_end_overshoot
1701 - layout.position_map.scroll_position.x
1702 },
1703 }
1704 })
1705 .collect(),
1706 };
1707
1708 highlighted_range.paint(bounds, cx);
1709 }
1710 }
1711
1712 fn paint_blocks(
1713 &mut self,
1714 bounds: Bounds<Pixels>,
1715 layout: &mut LayoutState,
1716 cx: &mut ElementContext,
1717 ) {
1718 let scroll_position = layout.position_map.snapshot.scroll_position();
1719 let scroll_left = scroll_position.x * layout.position_map.em_width;
1720 let scroll_top = scroll_position.y * layout.position_map.line_height;
1721
1722 for mut block in layout.blocks.drain(..) {
1723 let mut origin = bounds.origin
1724 + point(
1725 Pixels::ZERO,
1726 block.row as f32 * layout.position_map.line_height - scroll_top,
1727 );
1728 if !matches!(block.style, BlockStyle::Sticky) {
1729 origin += point(-scroll_left, Pixels::ZERO);
1730 }
1731 block.element.draw(origin, block.available_space, cx);
1732 }
1733 }
1734
1735 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1736 let style = &self.style;
1737 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1738 let layout = cx
1739 .text_system()
1740 .shape_line(
1741 SharedString::from(" ".repeat(column)),
1742 font_size,
1743 &[TextRun {
1744 len: column,
1745 font: style.text.font(),
1746 color: Hsla::default(),
1747 background_color: None,
1748 underline: None,
1749 strikethrough: None,
1750 }],
1751 )
1752 .unwrap();
1753
1754 layout.width
1755 }
1756
1757 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1758 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1759 self.column_pixels(digit_count, cx)
1760 }
1761
1762 //Folds contained in a hunk are ignored apart from shrinking visual size
1763 //If a fold contains any hunks then that fold line is marked as modified
1764 fn layout_git_gutters(
1765 &self,
1766 display_rows: Range<u32>,
1767 snapshot: &EditorSnapshot,
1768 ) -> Vec<DisplayDiffHunk> {
1769 let buffer_snapshot = &snapshot.buffer_snapshot;
1770
1771 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1772 .to_point(snapshot)
1773 .row;
1774 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1775 .to_point(snapshot)
1776 .row;
1777
1778 buffer_snapshot
1779 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1780 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1781 .dedup()
1782 .collect()
1783 }
1784
1785 fn calculate_relative_line_numbers(
1786 &self,
1787 snapshot: &EditorSnapshot,
1788 rows: &Range<u32>,
1789 relative_to: Option<u32>,
1790 ) -> HashMap<u32, u32> {
1791 let mut relative_rows: HashMap<u32, u32> = Default::default();
1792 let Some(relative_to) = relative_to else {
1793 return relative_rows;
1794 };
1795
1796 let start = rows.start.min(relative_to);
1797 let end = rows.end.max(relative_to);
1798
1799 let buffer_rows = snapshot
1800 .buffer_rows(start)
1801 .take(1 + (end - start) as usize)
1802 .collect::<Vec<_>>();
1803
1804 let head_idx = relative_to - start;
1805 let mut delta = 1;
1806 let mut i = head_idx + 1;
1807 while i < buffer_rows.len() as u32 {
1808 if buffer_rows[i as usize].is_some() {
1809 if rows.contains(&(i + start)) {
1810 relative_rows.insert(i + start, delta);
1811 }
1812 delta += 1;
1813 }
1814 i += 1;
1815 }
1816 delta = 1;
1817 i = head_idx.min(buffer_rows.len() as u32 - 1);
1818 while i > 0 && buffer_rows[i as usize].is_none() {
1819 i -= 1;
1820 }
1821
1822 while i > 0 {
1823 i -= 1;
1824 if buffer_rows[i as usize].is_some() {
1825 if rows.contains(&(i + start)) {
1826 relative_rows.insert(i + start, delta);
1827 }
1828 delta += 1;
1829 }
1830 }
1831
1832 relative_rows
1833 }
1834
1835 fn shape_line_numbers(
1836 &self,
1837 rows: Range<u32>,
1838 active_rows: &BTreeMap<u32, bool>,
1839 newest_selection_head: DisplayPoint,
1840 is_singleton: bool,
1841 snapshot: &EditorSnapshot,
1842 cx: &ViewContext<Editor>,
1843 ) -> (
1844 Vec<Option<ShapedLine>>,
1845 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1846 ) {
1847 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1848 let include_line_numbers =
1849 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full;
1850 let include_fold_statuses =
1851 EditorSettings::get_global(cx).gutter.folds && snapshot.mode == EditorMode::Full;
1852 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1853 let mut fold_statuses = Vec::with_capacity(rows.len());
1854 let mut line_number = String::new();
1855 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1856 let relative_to = if is_relative {
1857 Some(newest_selection_head.row())
1858 } else {
1859 None
1860 };
1861
1862 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1863
1864 for (ix, row) in snapshot
1865 .buffer_rows(rows.start)
1866 .take((rows.end - rows.start) as usize)
1867 .enumerate()
1868 {
1869 let display_row = rows.start + ix as u32;
1870 let (active, color) = if active_rows.contains_key(&display_row) {
1871 (true, cx.theme().colors().editor_active_line_number)
1872 } else {
1873 (false, cx.theme().colors().editor_line_number)
1874 };
1875 if let Some(buffer_row) = row {
1876 if include_line_numbers {
1877 line_number.clear();
1878 let default_number = buffer_row + 1;
1879 let number = relative_rows
1880 .get(&(ix as u32 + rows.start))
1881 .unwrap_or(&default_number);
1882 write!(&mut line_number, "{}", number).unwrap();
1883 let run = TextRun {
1884 len: line_number.len(),
1885 font: self.style.text.font(),
1886 color,
1887 background_color: None,
1888 underline: None,
1889 strikethrough: None,
1890 };
1891 let shaped_line = cx
1892 .text_system()
1893 .shape_line(line_number.clone().into(), font_size, &[run])
1894 .unwrap();
1895 shaped_line_numbers.push(Some(shaped_line));
1896 }
1897 if include_fold_statuses {
1898 fold_statuses.push(
1899 is_singleton
1900 .then(|| {
1901 snapshot
1902 .fold_for_line(buffer_row)
1903 .map(|fold_status| (fold_status, buffer_row, active))
1904 })
1905 .flatten(),
1906 )
1907 }
1908 } else {
1909 fold_statuses.push(None);
1910 shaped_line_numbers.push(None);
1911 }
1912 }
1913
1914 (shaped_line_numbers, fold_statuses)
1915 }
1916
1917 fn layout_lines(
1918 &self,
1919 rows: Range<u32>,
1920 line_number_layouts: &[Option<ShapedLine>],
1921 snapshot: &EditorSnapshot,
1922 cx: &mut ViewContext<Editor>,
1923 ) -> Vec<LineWithInvisibles> {
1924 if rows.start >= rows.end {
1925 return Vec::new();
1926 }
1927
1928 // Show the placeholder when the editor is empty
1929 if snapshot.is_empty() {
1930 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1931 let placeholder_color = cx.theme().colors().text_placeholder;
1932 let placeholder_text = snapshot.placeholder_text(cx);
1933
1934 let placeholder_lines = placeholder_text
1935 .as_ref()
1936 .map_or("", AsRef::as_ref)
1937 .split('\n')
1938 .skip(rows.start as usize)
1939 .chain(iter::repeat(""))
1940 .take(rows.len());
1941 placeholder_lines
1942 .filter_map(move |line| {
1943 let run = TextRun {
1944 len: line.len(),
1945 font: self.style.text.font(),
1946 color: placeholder_color,
1947 background_color: None,
1948 underline: Default::default(),
1949 strikethrough: None,
1950 };
1951 cx.text_system()
1952 .shape_line(line.to_string().into(), font_size, &[run])
1953 .log_err()
1954 })
1955 .map(|line| LineWithInvisibles {
1956 line,
1957 invisibles: Vec::new(),
1958 })
1959 .collect()
1960 } else {
1961 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1962 LineWithInvisibles::from_chunks(
1963 chunks,
1964 &self.style.text,
1965 MAX_LINE_LEN,
1966 rows.len() as usize,
1967 line_number_layouts,
1968 snapshot.mode,
1969 cx,
1970 )
1971 }
1972 }
1973
1974 fn compute_layout(&mut self, bounds: Bounds<Pixels>, cx: &mut ElementContext) -> LayoutState {
1975 self.editor.update(cx, |editor, cx| {
1976 let snapshot = editor.snapshot(cx);
1977 let style = self.style.clone();
1978
1979 let font_id = cx.text_system().resolve_font(&style.text.font());
1980 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1981 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1982 let em_width = cx
1983 .text_system()
1984 .typographic_bounds(font_id, font_size, 'm')
1985 .unwrap()
1986 .size
1987 .width;
1988 let em_advance = cx
1989 .text_system()
1990 .advance(font_id, font_size, 'm')
1991 .unwrap()
1992 .width;
1993
1994 let gutter_dimensions = snapshot.gutter_dimensions(
1995 font_id,
1996 font_size,
1997 em_width,
1998 self.max_line_number_width(&snapshot, cx),
1999 cx,
2000 );
2001
2002 editor.gutter_width = gutter_dimensions.width;
2003
2004 let text_width = bounds.size.width - gutter_dimensions.width;
2005 let overscroll = size(em_width, px(0.));
2006 let _snapshot = {
2007 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
2008
2009 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
2010 let wrap_width = match editor.soft_wrap_mode(cx) {
2011 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2012 SoftWrap::EditorWidth => editor_width,
2013 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2014 };
2015
2016 if editor.set_wrap_width(Some(wrap_width), cx) {
2017 editor.snapshot(cx)
2018 } else {
2019 snapshot
2020 }
2021 };
2022
2023 let wrap_guides = editor
2024 .wrap_guides(cx)
2025 .iter()
2026 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2027 .collect::<SmallVec<[_; 2]>>();
2028
2029 let gutter_size = size(gutter_dimensions.width, bounds.size.height);
2030 let text_size = size(text_width, bounds.size.height);
2031
2032 let autoscroll_horizontally =
2033 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
2034 let mut snapshot = editor.snapshot(cx);
2035
2036 let scroll_position = snapshot.scroll_position();
2037 // The scroll position is a fractional point, the whole number of which represents
2038 // the top of the window in terms of display rows.
2039 let start_row = scroll_position.y as u32;
2040 let height_in_lines = f32::from(bounds.size.height / line_height);
2041 let max_row = snapshot.max_point().row();
2042
2043 // Add 1 to ensure selections bleed off screen
2044 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
2045
2046 let start_anchor = if start_row == 0 {
2047 Anchor::min()
2048 } else {
2049 snapshot
2050 .buffer_snapshot
2051 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2052 };
2053 let end_anchor = if end_row > max_row {
2054 Anchor::max()
2055 } else {
2056 snapshot
2057 .buffer_snapshot
2058 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2059 };
2060
2061 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
2062 let mut active_rows = BTreeMap::new();
2063 let is_singleton = editor.is_singleton(cx);
2064
2065 let highlighted_rows = editor.highlighted_rows();
2066 let highlighted_ranges = editor.background_highlights_in_range(
2067 start_anchor..end_anchor,
2068 &snapshot.display_snapshot,
2069 cx.theme().colors(),
2070 );
2071
2072 let redacted_ranges = editor.redacted_ranges(start_anchor..end_anchor, &snapshot.display_snapshot, cx);
2073
2074 let mut newest_selection_head = None;
2075
2076 if editor.show_local_selections {
2077 let mut local_selections: Vec<Selection<Point>> = editor
2078 .selections
2079 .disjoint_in_range(start_anchor..end_anchor, cx);
2080 local_selections.extend(editor.selections.pending(cx));
2081 let mut layouts = Vec::new();
2082 let newest = editor.selections.newest(cx);
2083 for selection in local_selections.drain(..) {
2084 let is_empty = selection.start == selection.end;
2085 let is_newest = selection == newest;
2086
2087 let layout = SelectionLayout::new(
2088 selection,
2089 editor.selections.line_mode,
2090 editor.cursor_shape,
2091 &snapshot.display_snapshot,
2092 is_newest,
2093 true,
2094 None,
2095 );
2096 if is_newest {
2097 newest_selection_head = Some(layout.head);
2098 }
2099
2100 for row in cmp::max(layout.active_rows.start, start_row)
2101 ..=cmp::min(layout.active_rows.end, end_row)
2102 {
2103 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2104 *contains_non_empty_selection |= !is_empty;
2105 }
2106 layouts.push(layout);
2107 }
2108
2109 let player = if editor.read_only(cx) {
2110 cx.theme().players().read_only()
2111 } else {
2112 style.local_player
2113 };
2114
2115 selections.push((player, layouts));
2116 }
2117
2118 if let Some(collaboration_hub) = &editor.collaboration_hub {
2119 // When following someone, render the local selections in their color.
2120 if let Some(leader_id) = editor.leader_peer_id {
2121 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2122 if let Some(participant_index) = collaboration_hub
2123 .user_participant_indices(cx)
2124 .get(&collaborator.user_id)
2125 {
2126 if let Some((local_selection_style, _)) = selections.first_mut() {
2127 *local_selection_style = cx
2128 .theme()
2129 .players()
2130 .color_for_participant(participant_index.0);
2131 }
2132 }
2133 }
2134 }
2135
2136 let mut remote_selections = HashMap::default();
2137 for selection in snapshot.remote_selections_in_range(
2138 &(start_anchor..end_anchor),
2139 collaboration_hub.as_ref(),
2140 cx,
2141 ) {
2142 let selection_style = if let Some(participant_index) = selection.participant_index {
2143 cx.theme()
2144 .players()
2145 .color_for_participant(participant_index.0)
2146 } else {
2147 cx.theme().players().absent()
2148 };
2149
2150 // Don't re-render the leader's selections, since the local selections
2151 // match theirs.
2152 if Some(selection.peer_id) == editor.leader_peer_id {
2153 continue;
2154 }
2155 let key = HoveredCursor{replica_id: selection.replica_id, selection_id: selection.selection.id};
2156
2157 let is_shown = editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
2158
2159 remote_selections
2160 .entry(selection.replica_id)
2161 .or_insert((selection_style, Vec::new()))
2162 .1
2163 .push(SelectionLayout::new(
2164 selection.selection,
2165 selection.line_mode,
2166 selection.cursor_shape,
2167 &snapshot.display_snapshot,
2168 false,
2169 false,
2170 if is_shown {
2171 selection.user_name
2172 } else {
2173 None
2174 },
2175 ));
2176 }
2177
2178 selections.extend(remote_selections.into_values());
2179 }
2180
2181 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2182 let show_scrollbars = match scrollbar_settings.show {
2183 ShowScrollbar::Auto => {
2184 // Git
2185 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2186 ||
2187 // Selections
2188 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
2189 ||
2190 // Symbols Selections
2191 (is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
2192 ||
2193 // Diagnostics
2194 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
2195 ||
2196 // Scrollmanager
2197 editor.scroll_manager.scrollbars_visible()
2198 }
2199 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2200 ShowScrollbar::Always => true,
2201 ShowScrollbar::Never => false,
2202 };
2203
2204 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2205 let newest = editor.selections.newest::<Point>(cx);
2206 SelectionLayout::new(
2207 newest,
2208 editor.selections.line_mode,
2209 editor.cursor_shape,
2210 &snapshot.display_snapshot,
2211 true,
2212 true,
2213 None,
2214 )
2215 .head
2216 });
2217
2218 let (line_numbers, fold_statuses) = self.shape_line_numbers(
2219 start_row..end_row,
2220 &active_rows,
2221 head_for_relative,
2222 is_singleton,
2223 &snapshot,
2224 cx,
2225 );
2226
2227 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2228
2229 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2230
2231 let mut max_visible_line_width = Pixels::ZERO;
2232 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
2233 for line_with_invisibles in &line_layouts {
2234 if line_with_invisibles.line.width > max_visible_line_width {
2235 max_visible_line_width = line_with_invisibles.line.width;
2236 }
2237 }
2238
2239 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
2240 .unwrap()
2241 .width;
2242 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
2243
2244 let (scroll_width, blocks) = cx.with_element_context(|cx| {
2245 cx.with_element_id(Some("editor_blocks"), |cx| {
2246 self.layout_blocks(
2247 start_row..end_row,
2248 &snapshot,
2249 bounds.size.width,
2250 scroll_width,
2251 text_width,
2252 &gutter_dimensions,
2253 em_width,
2254 gutter_dimensions.width + gutter_dimensions.margin,
2255 line_height,
2256 &style,
2257 &line_layouts,
2258 editor,
2259 cx,
2260 )
2261 })
2262 });
2263
2264 let scroll_max = point(
2265 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
2266 max_row as f32,
2267 );
2268
2269 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2270
2271 let autoscrolled = if autoscroll_horizontally {
2272 editor.autoscroll_horizontally(
2273 start_row,
2274 text_size.width,
2275 scroll_width,
2276 em_width,
2277 &line_layouts,
2278 cx,
2279 )
2280 } else {
2281 false
2282 };
2283
2284 if clamped || autoscrolled {
2285 snapshot = editor.snapshot(cx);
2286 }
2287
2288 let gutter_settings = EditorSettings::get_global(cx).gutter;
2289
2290 let mut context_menu = None;
2291 let mut code_actions_indicator = None;
2292 if let Some(newest_selection_head) = newest_selection_head {
2293 if (start_row..end_row).contains(&newest_selection_head.row()) {
2294 if editor.context_menu_visible() {
2295 let max_height = cmp::min(
2296 12. * line_height,
2297 cmp::max(
2298 3. * line_height,
2299 (bounds.size.height - line_height) / 2.,
2300 )
2301 );
2302 context_menu =
2303 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2304 }
2305
2306 let active = matches!(
2307 editor.context_menu.read().as_ref(),
2308 Some(crate::ContextMenu::CodeActions(_))
2309 );
2310
2311 if gutter_settings.code_actions {
2312 code_actions_indicator = editor
2313 .render_code_actions_indicator(&style, active, cx)
2314 .map(|element| CodeActionsIndicator {
2315 row: newest_selection_head.row(),
2316 button: element,
2317 });
2318 }
2319 }
2320 }
2321
2322 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2323 let max_size = size(
2324 (120. * em_width) // Default size
2325 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2326 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2327 (16. * line_height) // Default size
2328 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2329 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2330 );
2331
2332 let hover = if context_menu.is_some() {
2333 None
2334 } else {
2335 editor.hover_state.render(
2336 &snapshot,
2337 &style,
2338 visible_rows,
2339 max_size,
2340 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2341 cx,
2342 )
2343 };
2344
2345 let editor_view = cx.view().clone();
2346 let fold_indicators = if gutter_settings.folds {
2347 cx.with_element_context(|cx| {
2348 cx.with_element_id(Some("gutter_fold_indicators"), |_cx| {
2349 editor.render_fold_indicators(
2350 fold_statuses,
2351 &style,
2352 editor.gutter_hovered,
2353 line_height,
2354 gutter_dimensions.margin,
2355 editor_view,
2356 )
2357 })
2358 })
2359 } else {
2360 Vec::new()
2361 };
2362
2363 let invisible_symbol_font_size = font_size / 2.;
2364 let tab_invisible = cx
2365 .text_system()
2366 .shape_line(
2367 "→".into(),
2368 invisible_symbol_font_size,
2369 &[TextRun {
2370 len: "→".len(),
2371 font: self.style.text.font(),
2372 color: cx.theme().colors().editor_invisible,
2373 background_color: None,
2374 underline: None,
2375 strikethrough: None,
2376 }],
2377 )
2378 .unwrap();
2379 let space_invisible = cx
2380 .text_system()
2381 .shape_line(
2382 "•".into(),
2383 invisible_symbol_font_size,
2384 &[TextRun {
2385 len: "•".len(),
2386 font: self.style.text.font(),
2387 color: cx.theme().colors().editor_invisible,
2388 background_color: None,
2389 underline: None,
2390 strikethrough: None,
2391 }],
2392 )
2393 .unwrap();
2394
2395 LayoutState {
2396 mode: snapshot.mode,
2397 position_map: Arc::new(PositionMap {
2398 size: bounds.size,
2399 scroll_position: point(
2400 scroll_position.x * em_width,
2401 scroll_position.y * line_height,
2402 ),
2403 scroll_max,
2404 line_layouts,
2405 line_height,
2406 em_width,
2407 em_advance,
2408 snapshot,
2409 }),
2410 visible_anchor_range: start_anchor..end_anchor,
2411 visible_display_row_range: start_row..end_row,
2412 wrap_guides,
2413 gutter_size,
2414 gutter_dimensions,
2415 text_size,
2416 scrollbar_row_range,
2417 show_scrollbars,
2418 is_singleton,
2419 max_row,
2420 active_rows,
2421 highlighted_rows,
2422 highlighted_ranges,
2423 redacted_ranges,
2424 line_numbers,
2425 display_hunks,
2426 blocks,
2427 selections,
2428 context_menu,
2429 code_actions_indicator,
2430 fold_indicators,
2431 tab_invisible,
2432 space_invisible,
2433 hover_popovers: hover,
2434 }
2435 })
2436 }
2437
2438 #[allow(clippy::too_many_arguments)]
2439 fn layout_blocks(
2440 &self,
2441 rows: Range<u32>,
2442 snapshot: &EditorSnapshot,
2443 editor_width: Pixels,
2444 scroll_width: Pixels,
2445 text_width: Pixels,
2446 gutter_dimensions: &GutterDimensions,
2447 em_width: Pixels,
2448 text_x: Pixels,
2449 line_height: Pixels,
2450 style: &EditorStyle,
2451 line_layouts: &[LineWithInvisibles],
2452 editor: &mut Editor,
2453 cx: &mut ElementContext,
2454 ) -> (Pixels, Vec<BlockLayout>) {
2455 let mut block_id = 0;
2456 let (fixed_blocks, non_fixed_blocks) = snapshot
2457 .blocks_in_range(rows.clone())
2458 .partition::<Vec<_>, _>(|(_, block)| match block {
2459 TransformBlock::ExcerptHeader { .. } => false,
2460 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2461 });
2462
2463 let render_block = |block: &TransformBlock,
2464 available_space: Size<AvailableSpace>,
2465 block_id: usize,
2466 editor: &mut Editor,
2467 cx: &mut ElementContext| {
2468 let mut element = match block {
2469 TransformBlock::Custom(block) => {
2470 let align_to = block
2471 .position()
2472 .to_point(&snapshot.buffer_snapshot)
2473 .to_display_point(snapshot);
2474 let anchor_x = text_x
2475 + if rows.contains(&align_to.row()) {
2476 line_layouts[(align_to.row() - rows.start) as usize]
2477 .line
2478 .x_for_index(align_to.column() as usize)
2479 } else {
2480 layout_line(align_to.row(), snapshot, style, cx)
2481 .unwrap()
2482 .x_for_index(align_to.column() as usize)
2483 };
2484
2485 block.render(&mut BlockContext {
2486 context: cx,
2487 anchor_x,
2488 gutter_dimensions,
2489 line_height,
2490 em_width,
2491 block_id,
2492 max_width: scroll_width.max(text_width),
2493 editor_style: &self.style,
2494 })
2495 }
2496
2497 TransformBlock::ExcerptHeader {
2498 buffer,
2499 range,
2500 starts_new_buffer,
2501 ..
2502 } => {
2503 let include_root = editor
2504 .project
2505 .as_ref()
2506 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2507 .unwrap_or_default();
2508
2509 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2510 let jump_path = ProjectPath {
2511 worktree_id: file.worktree_id(cx),
2512 path: file.path.clone(),
2513 };
2514 let jump_anchor = range
2515 .primary
2516 .as_ref()
2517 .map_or(range.context.start, |primary| primary.start);
2518 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2519
2520 cx.listener_for(&self.editor, move |editor, _, cx| {
2521 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2522 })
2523 });
2524
2525 let element = if *starts_new_buffer {
2526 let path = buffer.resolve_file_path(cx, include_root);
2527 let mut filename = None;
2528 let mut parent_path = None;
2529 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2530 if let Some(path) = path {
2531 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2532 parent_path = path
2533 .parent()
2534 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2535 }
2536
2537 v_flex()
2538 .id(("path header container", block_id))
2539 .size_full()
2540 .justify_center()
2541 .p(gpui::px(6.))
2542 .child(
2543 h_flex()
2544 .id("path header block")
2545 .size_full()
2546 .pl(gpui::px(12.))
2547 .pr(gpui::px(8.))
2548 .rounded_md()
2549 .shadow_md()
2550 .border()
2551 .border_color(cx.theme().colors().border)
2552 .bg(cx.theme().colors().editor_subheader_background)
2553 .justify_between()
2554 .hover(|style| style.bg(cx.theme().colors().element_hover))
2555 .child(
2556 h_flex().gap_3().child(
2557 h_flex()
2558 .gap_2()
2559 .child(
2560 filename
2561 .map(SharedString::from)
2562 .unwrap_or_else(|| "untitled".into()),
2563 )
2564 .when_some(parent_path, |then, path| {
2565 then.child(
2566 div().child(path).text_color(
2567 cx.theme().colors().text_muted,
2568 ),
2569 )
2570 }),
2571 ),
2572 )
2573 .when_some(jump_handler, |this, jump_handler| {
2574 this.cursor_pointer()
2575 .tooltip(|cx| {
2576 Tooltip::for_action(
2577 "Jump to Buffer",
2578 &OpenExcerpts,
2579 cx,
2580 )
2581 })
2582 .on_mouse_down(MouseButton::Left, |_, cx| {
2583 cx.stop_propagation()
2584 })
2585 .on_click(jump_handler)
2586 }),
2587 )
2588 } else {
2589 h_flex()
2590 .id(("collapsed context", block_id))
2591 .size_full()
2592 .gap(gutter_dimensions.left_padding + gutter_dimensions.right_padding)
2593 .child(
2594 h_flex()
2595 .justify_end()
2596 .flex_none()
2597 .w(gutter_dimensions.width
2598 - (gutter_dimensions.left_padding
2599 + gutter_dimensions.right_padding))
2600 .h_full()
2601 .text_buffer(cx)
2602 .text_color(cx.theme().colors().editor_line_number)
2603 .child("..."),
2604 )
2605 .child(
2606 ButtonLike::new("jump to collapsed context")
2607 .style(ButtonStyle::Transparent)
2608 .full_width()
2609 .child(
2610 div()
2611 .h_px()
2612 .w_full()
2613 .bg(cx.theme().colors().border_variant)
2614 .group_hover("", |style| {
2615 style.bg(cx.theme().colors().border)
2616 }),
2617 )
2618 .when_some(jump_handler, |this, jump_handler| {
2619 this.on_click(jump_handler).tooltip(|cx| {
2620 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2621 })
2622 }),
2623 )
2624 };
2625 element.into_any()
2626 }
2627 };
2628
2629 let size = element.measure(available_space, cx);
2630 (element, size)
2631 };
2632
2633 let mut fixed_block_max_width = Pixels::ZERO;
2634 let mut blocks = Vec::new();
2635 for (row, block) in fixed_blocks {
2636 let available_space = size(
2637 AvailableSpace::MinContent,
2638 AvailableSpace::Definite(block.height() as f32 * line_height),
2639 );
2640 let (element, element_size) =
2641 render_block(block, available_space, block_id, editor, cx);
2642 block_id += 1;
2643 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2644 blocks.push(BlockLayout {
2645 row,
2646 element,
2647 available_space,
2648 style: BlockStyle::Fixed,
2649 });
2650 }
2651 for (row, block) in non_fixed_blocks {
2652 let style = match block {
2653 TransformBlock::Custom(block) => block.style(),
2654 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2655 };
2656 let width = match style {
2657 BlockStyle::Sticky => editor_width,
2658 BlockStyle::Flex => editor_width
2659 .max(fixed_block_max_width)
2660 .max(gutter_dimensions.width + scroll_width),
2661 BlockStyle::Fixed => unreachable!(),
2662 };
2663 let available_space = size(
2664 AvailableSpace::Definite(width),
2665 AvailableSpace::Definite(block.height() as f32 * line_height),
2666 );
2667 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2668 block_id += 1;
2669 blocks.push(BlockLayout {
2670 row,
2671 element,
2672 available_space,
2673 style,
2674 });
2675 }
2676 (
2677 scroll_width.max(fixed_block_max_width - gutter_dimensions.width),
2678 blocks,
2679 )
2680 }
2681
2682 fn paint_scroll_wheel_listener(
2683 &mut self,
2684 interactive_bounds: &InteractiveBounds,
2685 layout: &LayoutState,
2686 cx: &mut ElementContext,
2687 ) {
2688 cx.on_mouse_event({
2689 let position_map = layout.position_map.clone();
2690 let editor = self.editor.clone();
2691 let interactive_bounds = interactive_bounds.clone();
2692 let mut delta = ScrollDelta::default();
2693
2694 move |event: &ScrollWheelEvent, phase, cx| {
2695 if phase == DispatchPhase::Bubble
2696 && interactive_bounds.visibly_contains(&event.position, cx)
2697 {
2698 delta = delta.coalesce(event.delta);
2699 editor.update(cx, |editor, cx| {
2700 let position = event.position;
2701 let position_map: &PositionMap = &position_map;
2702 let bounds = &interactive_bounds;
2703 if !bounds.visibly_contains(&position, cx) {
2704 return;
2705 }
2706
2707 let line_height = position_map.line_height;
2708 let max_glyph_width = position_map.em_width;
2709 let (delta, axis) = match delta {
2710 gpui::ScrollDelta::Pixels(mut pixels) => {
2711 //Trackpad
2712 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2713 (pixels, axis)
2714 }
2715
2716 gpui::ScrollDelta::Lines(lines) => {
2717 //Not trackpad
2718 let pixels =
2719 point(lines.x * max_glyph_width, lines.y * line_height);
2720 (pixels, None)
2721 }
2722 };
2723
2724 let scroll_position = position_map.snapshot.scroll_position();
2725 let x = f32::from(
2726 (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width,
2727 );
2728 let y =
2729 f32::from((scroll_position.y * line_height - delta.y) / line_height);
2730 let scroll_position =
2731 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2732 editor.scroll(scroll_position, axis, cx);
2733 cx.stop_propagation();
2734 });
2735 }
2736 }
2737 });
2738 }
2739
2740 fn paint_mouse_listeners(
2741 &mut self,
2742 bounds: Bounds<Pixels>,
2743 gutter_bounds: Bounds<Pixels>,
2744 text_bounds: Bounds<Pixels>,
2745 layout: &LayoutState,
2746 cx: &mut ElementContext,
2747 ) {
2748 let interactive_bounds = InteractiveBounds {
2749 bounds: bounds.intersect(&cx.content_mask().bounds),
2750 stacking_order: cx.stacking_order().clone(),
2751 };
2752
2753 self.paint_scroll_wheel_listener(&interactive_bounds, layout, cx);
2754
2755 cx.on_mouse_event({
2756 let position_map = layout.position_map.clone();
2757 let editor = self.editor.clone();
2758 let stacking_order = cx.stacking_order().clone();
2759 let interactive_bounds = interactive_bounds.clone();
2760
2761 move |event: &MouseDownEvent, phase, cx| {
2762 if phase == DispatchPhase::Bubble
2763 && interactive_bounds.visibly_contains(&event.position, cx)
2764 {
2765 match event.button {
2766 MouseButton::Left => editor.update(cx, |editor, cx| {
2767 Self::mouse_left_down(
2768 editor,
2769 event,
2770 &position_map,
2771 text_bounds,
2772 gutter_bounds,
2773 &stacking_order,
2774 cx,
2775 );
2776 }),
2777 MouseButton::Right => editor.update(cx, |editor, cx| {
2778 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx);
2779 }),
2780 _ => {}
2781 };
2782 }
2783 }
2784 });
2785
2786 cx.on_mouse_event({
2787 let position_map = layout.position_map.clone();
2788 let editor = self.editor.clone();
2789 let stacking_order = cx.stacking_order().clone();
2790 let interactive_bounds = interactive_bounds.clone();
2791
2792 move |event: &MouseUpEvent, phase, cx| {
2793 if phase == DispatchPhase::Bubble {
2794 editor.update(cx, |editor, cx| {
2795 Self::mouse_up(
2796 editor,
2797 event,
2798 &position_map,
2799 text_bounds,
2800 &interactive_bounds,
2801 &stacking_order,
2802 cx,
2803 )
2804 });
2805 }
2806 }
2807 });
2808 cx.on_mouse_event({
2809 let position_map = layout.position_map.clone();
2810 let editor = self.editor.clone();
2811 let stacking_order = cx.stacking_order().clone();
2812
2813 move |event: &MouseMoveEvent, phase, cx| {
2814 // if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
2815
2816 if phase == DispatchPhase::Bubble {
2817 editor.update(cx, |editor, cx| {
2818 if event.pressed_button == Some(MouseButton::Left) {
2819 Self::mouse_dragged(
2820 editor,
2821 event,
2822 &position_map,
2823 text_bounds,
2824 gutter_bounds,
2825 &stacking_order,
2826 cx,
2827 )
2828 }
2829
2830 if interactive_bounds.visibly_contains(&event.position, cx) {
2831 Self::mouse_moved(
2832 editor,
2833 event,
2834 &position_map,
2835 text_bounds,
2836 gutter_bounds,
2837 &stacking_order,
2838 cx,
2839 )
2840 }
2841 });
2842 }
2843 }
2844 });
2845 }
2846}
2847
2848#[derive(Debug)]
2849pub(crate) struct LineWithInvisibles {
2850 pub line: ShapedLine,
2851 invisibles: Vec<Invisible>,
2852}
2853
2854impl LineWithInvisibles {
2855 fn from_chunks<'a>(
2856 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2857 text_style: &TextStyle,
2858 max_line_len: usize,
2859 max_line_count: usize,
2860 line_number_layouts: &[Option<ShapedLine>],
2861 editor_mode: EditorMode,
2862 cx: &WindowContext,
2863 ) -> Vec<Self> {
2864 let mut layouts = Vec::with_capacity(max_line_count);
2865 let mut line = String::new();
2866 let mut invisibles = Vec::new();
2867 let mut styles = Vec::new();
2868 let mut non_whitespace_added = false;
2869 let mut row = 0;
2870 let mut line_exceeded_max_len = false;
2871 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2872
2873 for highlighted_chunk in chunks.chain([HighlightedChunk {
2874 chunk: "\n",
2875 style: None,
2876 is_tab: false,
2877 }]) {
2878 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2879 if ix > 0 {
2880 let shaped_line = cx
2881 .text_system()
2882 .shape_line(line.clone().into(), font_size, &styles)
2883 .unwrap();
2884 layouts.push(Self {
2885 line: shaped_line,
2886 invisibles: invisibles.drain(..).collect(),
2887 });
2888
2889 line.clear();
2890 styles.clear();
2891 row += 1;
2892 line_exceeded_max_len = false;
2893 non_whitespace_added = false;
2894 if row == max_line_count {
2895 return layouts;
2896 }
2897 }
2898
2899 if !line_chunk.is_empty() && !line_exceeded_max_len {
2900 let text_style = if let Some(style) = highlighted_chunk.style {
2901 Cow::Owned(text_style.clone().highlight(style))
2902 } else {
2903 Cow::Borrowed(text_style)
2904 };
2905
2906 if line.len() + line_chunk.len() > max_line_len {
2907 let mut chunk_len = max_line_len - line.len();
2908 while !line_chunk.is_char_boundary(chunk_len) {
2909 chunk_len -= 1;
2910 }
2911 line_chunk = &line_chunk[..chunk_len];
2912 line_exceeded_max_len = true;
2913 }
2914
2915 styles.push(TextRun {
2916 len: line_chunk.len(),
2917 font: text_style.font(),
2918 color: text_style.color,
2919 background_color: text_style.background_color,
2920 underline: text_style.underline,
2921 strikethrough: text_style.strikethrough,
2922 });
2923
2924 if editor_mode == EditorMode::Full {
2925 // Line wrap pads its contents with fake whitespaces,
2926 // avoid printing them
2927 let inside_wrapped_string = line_number_layouts
2928 .get(row)
2929 .and_then(|layout| layout.as_ref())
2930 .is_none();
2931 if highlighted_chunk.is_tab {
2932 if non_whitespace_added || !inside_wrapped_string {
2933 invisibles.push(Invisible::Tab {
2934 line_start_offset: line.len(),
2935 });
2936 }
2937 } else {
2938 invisibles.extend(
2939 line_chunk
2940 .chars()
2941 .enumerate()
2942 .filter(|(_, line_char)| {
2943 let is_whitespace = line_char.is_whitespace();
2944 non_whitespace_added |= !is_whitespace;
2945 is_whitespace
2946 && (non_whitespace_added || !inside_wrapped_string)
2947 })
2948 .map(|(whitespace_index, _)| Invisible::Whitespace {
2949 line_offset: line.len() + whitespace_index,
2950 }),
2951 )
2952 }
2953 }
2954
2955 line.push_str(line_chunk);
2956 }
2957 }
2958 }
2959
2960 layouts
2961 }
2962
2963 fn draw(
2964 &self,
2965 layout: &LayoutState,
2966 row: u32,
2967 content_origin: gpui::Point<Pixels>,
2968 whitespace_setting: ShowWhitespaceSetting,
2969 selection_ranges: &[Range<DisplayPoint>],
2970 cx: &mut ElementContext,
2971 ) {
2972 let line_height = layout.position_map.line_height;
2973 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2974
2975 self.line
2976 .paint(
2977 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2978 line_height,
2979 cx,
2980 )
2981 .log_err();
2982
2983 self.draw_invisibles(
2984 &selection_ranges,
2985 layout,
2986 content_origin,
2987 line_y,
2988 row,
2989 line_height,
2990 whitespace_setting,
2991 cx,
2992 );
2993 }
2994
2995 fn draw_invisibles(
2996 &self,
2997 selection_ranges: &[Range<DisplayPoint>],
2998 layout: &LayoutState,
2999 content_origin: gpui::Point<Pixels>,
3000 line_y: Pixels,
3001 row: u32,
3002 line_height: Pixels,
3003 whitespace_setting: ShowWhitespaceSetting,
3004 cx: &mut ElementContext,
3005 ) {
3006 let allowed_invisibles_regions = match whitespace_setting {
3007 ShowWhitespaceSetting::None => return,
3008 ShowWhitespaceSetting::Selection => Some(selection_ranges),
3009 ShowWhitespaceSetting::All => None,
3010 };
3011
3012 for invisible in &self.invisibles {
3013 let (&token_offset, invisible_symbol) = match invisible {
3014 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
3015 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
3016 };
3017
3018 let x_offset = self.line.x_for_index(token_offset);
3019 let invisible_offset =
3020 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
3021 let origin = content_origin
3022 + gpui::point(
3023 x_offset + invisible_offset - layout.position_map.scroll_position.x,
3024 line_y,
3025 );
3026
3027 if let Some(allowed_regions) = allowed_invisibles_regions {
3028 let invisible_point = DisplayPoint::new(row, token_offset as u32);
3029 if !allowed_regions
3030 .iter()
3031 .any(|region| region.start <= invisible_point && invisible_point < region.end)
3032 {
3033 continue;
3034 }
3035 }
3036 invisible_symbol.paint(origin, line_height, cx).log_err();
3037 }
3038 }
3039}
3040
3041#[derive(Debug, Clone, Copy, PartialEq, Eq)]
3042enum Invisible {
3043 Tab { line_start_offset: usize },
3044 Whitespace { line_offset: usize },
3045}
3046
3047impl Element for EditorElement {
3048 type State = ();
3049
3050 fn request_layout(
3051 &mut self,
3052 _element_state: Option<Self::State>,
3053 cx: &mut gpui::ElementContext,
3054 ) -> (gpui::LayoutId, Self::State) {
3055 cx.with_view_id(self.editor.entity_id(), |cx| {
3056 self.editor.update(cx, |editor, cx| {
3057 editor.set_style(self.style.clone(), cx);
3058
3059 let layout_id = match editor.mode {
3060 EditorMode::SingleLine => {
3061 let rem_size = cx.rem_size();
3062 let mut style = Style::default();
3063 style.size.width = relative(1.).into();
3064 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
3065 cx.with_element_context(|cx| cx.request_layout(&style, None))
3066 }
3067 EditorMode::AutoHeight { max_lines } => {
3068 let editor_handle = cx.view().clone();
3069 let max_line_number_width =
3070 self.max_line_number_width(&editor.snapshot(cx), cx);
3071 cx.with_element_context(|cx| {
3072 cx.request_measured_layout(
3073 Style::default(),
3074 move |known_dimensions, _, cx| {
3075 editor_handle
3076 .update(cx, |editor, cx| {
3077 compute_auto_height_layout(
3078 editor,
3079 max_lines,
3080 max_line_number_width,
3081 known_dimensions,
3082 cx,
3083 )
3084 })
3085 .unwrap_or_default()
3086 },
3087 )
3088 })
3089 }
3090 EditorMode::Full => {
3091 let mut style = Style::default();
3092 style.size.width = relative(1.).into();
3093 style.size.height = relative(1.).into();
3094 cx.with_element_context(|cx| cx.request_layout(&style, None))
3095 }
3096 };
3097
3098 (layout_id, ())
3099 })
3100 })
3101 }
3102
3103 fn paint(
3104 &mut self,
3105 bounds: Bounds<gpui::Pixels>,
3106 _element_state: &mut Self::State,
3107 cx: &mut gpui::ElementContext,
3108 ) {
3109 let editor = self.editor.clone();
3110
3111 cx.paint_view(self.editor.entity_id(), |cx| {
3112 cx.with_text_style(
3113 Some(gpui::TextStyleRefinement {
3114 font_size: Some(self.style.text.font_size),
3115 line_height: Some(self.style.text.line_height),
3116 ..Default::default()
3117 }),
3118 |cx| {
3119 let mut layout = self.compute_layout(bounds, cx);
3120 let gutter_bounds = Bounds {
3121 origin: bounds.origin,
3122 size: layout.gutter_size,
3123 };
3124 let text_bounds = Bounds {
3125 origin: gutter_bounds.upper_right(),
3126 size: layout.text_size,
3127 };
3128
3129 let focus_handle = editor.focus_handle(cx);
3130 let key_context = self.editor.read(cx).key_context(cx);
3131 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
3132 self.register_actions(cx);
3133
3134 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3135 self.register_key_listeners(cx, text_bounds, &layout);
3136 cx.handle_input(
3137 &focus_handle,
3138 ElementInputHandler::new(bounds, self.editor.clone()),
3139 );
3140
3141 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
3142 if layout.gutter_size.width > Pixels::ZERO {
3143 self.paint_gutter(gutter_bounds, &mut layout, cx);
3144 }
3145 self.paint_text(text_bounds, &mut layout, cx);
3146
3147 cx.with_z_index(0, |cx| {
3148 self.paint_mouse_listeners(
3149 bounds,
3150 gutter_bounds,
3151 text_bounds,
3152 &layout,
3153 cx,
3154 );
3155 });
3156 if !layout.blocks.is_empty() {
3157 cx.with_z_index(0, |cx| {
3158 cx.with_element_id(Some("editor_blocks"), |cx| {
3159 self.paint_blocks(bounds, &mut layout, cx);
3160 });
3161 })
3162 }
3163
3164 cx.with_z_index(1, |cx| {
3165 self.paint_overlays(text_bounds, &mut layout, cx);
3166 });
3167
3168 cx.with_z_index(2, |cx| self.paint_scrollbar(bounds, &mut layout, cx));
3169 });
3170 })
3171 },
3172 )
3173 })
3174 }
3175}
3176
3177impl IntoElement for EditorElement {
3178 type Element = Self;
3179
3180 fn element_id(&self) -> Option<gpui::ElementId> {
3181 self.editor.element_id()
3182 }
3183
3184 fn into_element(self) -> Self::Element {
3185 self
3186 }
3187}
3188
3189type BufferRow = u32;
3190
3191pub struct LayoutState {
3192 position_map: Arc<PositionMap>,
3193 gutter_size: Size<Pixels>,
3194 gutter_dimensions: GutterDimensions,
3195 text_size: gpui::Size<Pixels>,
3196 mode: EditorMode,
3197 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3198 visible_anchor_range: Range<Anchor>,
3199 visible_display_row_range: Range<u32>,
3200 active_rows: BTreeMap<u32, bool>,
3201 highlighted_rows: Option<Range<u32>>,
3202 line_numbers: Vec<Option<ShapedLine>>,
3203 display_hunks: Vec<DisplayDiffHunk>,
3204 blocks: Vec<BlockLayout>,
3205 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3206 redacted_ranges: Vec<Range<DisplayPoint>>,
3207 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3208 scrollbar_row_range: Range<f32>,
3209 show_scrollbars: bool,
3210 is_singleton: bool,
3211 max_row: u32,
3212 context_menu: Option<(DisplayPoint, AnyElement)>,
3213 code_actions_indicator: Option<CodeActionsIndicator>,
3214 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3215 fold_indicators: Vec<Option<IconButton>>,
3216 tab_invisible: ShapedLine,
3217 space_invisible: ShapedLine,
3218}
3219
3220impl LayoutState {
3221 fn line_end_overshoot(&self) -> Pixels {
3222 0.15 * self.position_map.line_height
3223 }
3224}
3225
3226struct CodeActionsIndicator {
3227 row: u32,
3228 button: IconButton,
3229}
3230
3231struct PositionMap {
3232 size: Size<Pixels>,
3233 line_height: Pixels,
3234 scroll_position: gpui::Point<Pixels>,
3235 scroll_max: gpui::Point<f32>,
3236 em_width: Pixels,
3237 em_advance: Pixels,
3238 line_layouts: Vec<LineWithInvisibles>,
3239 snapshot: EditorSnapshot,
3240}
3241
3242#[derive(Debug, Copy, Clone)]
3243pub struct PointForPosition {
3244 pub previous_valid: DisplayPoint,
3245 pub next_valid: DisplayPoint,
3246 pub exact_unclipped: DisplayPoint,
3247 pub column_overshoot_after_line_end: u32,
3248}
3249
3250impl PointForPosition {
3251 pub fn as_valid(&self) -> Option<DisplayPoint> {
3252 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3253 Some(self.previous_valid)
3254 } else {
3255 None
3256 }
3257 }
3258}
3259
3260impl PositionMap {
3261 fn point_for_position(
3262 &self,
3263 text_bounds: Bounds<Pixels>,
3264 position: gpui::Point<Pixels>,
3265 ) -> PointForPosition {
3266 let scroll_position = self.snapshot.scroll_position();
3267 let position = position - text_bounds.origin;
3268 let y = position.y.max(px(0.)).min(self.size.height);
3269 let x = position.x + (scroll_position.x * self.em_width);
3270 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3271
3272 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3273 .line_layouts
3274 .get(row as usize - scroll_position.y as usize)
3275 .map(|&LineWithInvisibles { ref line, .. }| line)
3276 {
3277 if let Some(ix) = line.index_for_x(x) {
3278 (ix as u32, px(0.))
3279 } else {
3280 (line.len as u32, px(0.).max(x - line.width))
3281 }
3282 } else {
3283 (0, x)
3284 };
3285
3286 let mut exact_unclipped = DisplayPoint::new(row, column);
3287 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3288 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3289
3290 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3291 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3292 PointForPosition {
3293 previous_valid,
3294 next_valid,
3295 exact_unclipped,
3296 column_overshoot_after_line_end,
3297 }
3298 }
3299}
3300
3301struct BlockLayout {
3302 row: u32,
3303 element: AnyElement,
3304 available_space: Size<AvailableSpace>,
3305 style: BlockStyle,
3306}
3307
3308fn layout_line(
3309 row: u32,
3310 snapshot: &EditorSnapshot,
3311 style: &EditorStyle,
3312 cx: &WindowContext,
3313) -> Result<ShapedLine> {
3314 let mut line = snapshot.line(row);
3315
3316 if line.len() > MAX_LINE_LEN {
3317 let mut len = MAX_LINE_LEN;
3318 while !line.is_char_boundary(len) {
3319 len -= 1;
3320 }
3321
3322 line.truncate(len);
3323 }
3324
3325 cx.text_system().shape_line(
3326 line.into(),
3327 style.text.font_size.to_pixels(cx.rem_size()),
3328 &[TextRun {
3329 len: snapshot.line_len(row) as usize,
3330 font: style.text.font(),
3331 color: Hsla::default(),
3332 background_color: None,
3333 underline: None,
3334 strikethrough: None,
3335 }],
3336 )
3337}
3338
3339#[derive(Debug)]
3340pub struct Cursor {
3341 origin: gpui::Point<Pixels>,
3342 block_width: Pixels,
3343 line_height: Pixels,
3344 color: Hsla,
3345 shape: CursorShape,
3346 block_text: Option<ShapedLine>,
3347 cursor_name: Option<CursorName>,
3348}
3349
3350#[derive(Debug)]
3351pub struct CursorName {
3352 string: SharedString,
3353 color: Hsla,
3354 is_top_row: bool,
3355 z_index: u16,
3356}
3357
3358impl Cursor {
3359 pub fn new(
3360 origin: gpui::Point<Pixels>,
3361 block_width: Pixels,
3362 line_height: Pixels,
3363 color: Hsla,
3364 shape: CursorShape,
3365 block_text: Option<ShapedLine>,
3366 cursor_name: Option<CursorName>,
3367 ) -> Cursor {
3368 Cursor {
3369 origin,
3370 block_width,
3371 line_height,
3372 color,
3373 shape,
3374 block_text,
3375 cursor_name,
3376 }
3377 }
3378
3379 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3380 Bounds {
3381 origin: self.origin + origin,
3382 size: size(self.block_width, self.line_height),
3383 }
3384 }
3385
3386 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3387 let bounds = match self.shape {
3388 CursorShape::Bar => Bounds {
3389 origin: self.origin + origin,
3390 size: size(px(2.0), self.line_height),
3391 },
3392 CursorShape::Block | CursorShape::Hollow => Bounds {
3393 origin: self.origin + origin,
3394 size: size(self.block_width, self.line_height),
3395 },
3396 CursorShape::Underscore => Bounds {
3397 origin: self.origin
3398 + origin
3399 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3400 size: size(self.block_width, px(2.0)),
3401 },
3402 };
3403
3404 //Draw background or border quad
3405 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3406 outline(bounds, self.color)
3407 } else {
3408 fill(bounds, self.color)
3409 };
3410
3411 if let Some(name) = &self.cursor_name {
3412 let text_size = self.line_height / 1.5;
3413
3414 let name_origin = if name.is_top_row {
3415 point(bounds.right() - px(1.), bounds.top())
3416 } else {
3417 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3418 };
3419 cx.with_z_index(name.z_index, |cx| {
3420 div()
3421 .bg(self.color)
3422 .text_size(text_size)
3423 .px_0p5()
3424 .line_height(text_size + px(2.))
3425 .text_color(name.color)
3426 .child(name.string.clone())
3427 .into_any_element()
3428 .draw(
3429 name_origin,
3430 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3431 cx,
3432 )
3433 })
3434 }
3435
3436 cx.paint_quad(cursor);
3437
3438 if let Some(block_text) = &self.block_text {
3439 block_text
3440 .paint(self.origin + origin, self.line_height, cx)
3441 .log_err();
3442 }
3443 }
3444
3445 pub fn shape(&self) -> CursorShape {
3446 self.shape
3447 }
3448}
3449
3450#[derive(Debug)]
3451pub struct HighlightedRange {
3452 pub start_y: Pixels,
3453 pub line_height: Pixels,
3454 pub lines: Vec<HighlightedRangeLine>,
3455 pub color: Hsla,
3456 pub corner_radius: Pixels,
3457}
3458
3459#[derive(Debug)]
3460pub struct HighlightedRangeLine {
3461 pub start_x: Pixels,
3462 pub end_x: Pixels,
3463}
3464
3465impl HighlightedRange {
3466 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3467 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3468 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3469 self.paint_lines(
3470 self.start_y + self.line_height,
3471 &self.lines[1..],
3472 bounds,
3473 cx,
3474 );
3475 } else {
3476 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3477 }
3478 }
3479
3480 fn paint_lines(
3481 &self,
3482 start_y: Pixels,
3483 lines: &[HighlightedRangeLine],
3484 _bounds: Bounds<Pixels>,
3485 cx: &mut ElementContext,
3486 ) {
3487 if lines.is_empty() {
3488 return;
3489 }
3490
3491 let first_line = lines.first().unwrap();
3492 let last_line = lines.last().unwrap();
3493
3494 let first_top_left = point(first_line.start_x, start_y);
3495 let first_top_right = point(first_line.end_x, start_y);
3496
3497 let curve_height = point(Pixels::ZERO, self.corner_radius);
3498 let curve_width = |start_x: Pixels, end_x: Pixels| {
3499 let max = (end_x - start_x) / 2.;
3500 let width = if max < self.corner_radius {
3501 max
3502 } else {
3503 self.corner_radius
3504 };
3505
3506 point(width, Pixels::ZERO)
3507 };
3508
3509 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3510 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3511 path.curve_to(first_top_right + curve_height, first_top_right);
3512
3513 let mut iter = lines.iter().enumerate().peekable();
3514 while let Some((ix, line)) = iter.next() {
3515 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3516
3517 if let Some((_, next_line)) = iter.peek() {
3518 let next_top_right = point(next_line.end_x, bottom_right.y);
3519
3520 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3521 Ordering::Equal => {
3522 path.line_to(bottom_right);
3523 }
3524 Ordering::Less => {
3525 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3526 path.line_to(bottom_right - curve_height);
3527 if self.corner_radius > Pixels::ZERO {
3528 path.curve_to(bottom_right - curve_width, bottom_right);
3529 }
3530 path.line_to(next_top_right + curve_width);
3531 if self.corner_radius > Pixels::ZERO {
3532 path.curve_to(next_top_right + curve_height, next_top_right);
3533 }
3534 }
3535 Ordering::Greater => {
3536 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3537 path.line_to(bottom_right - curve_height);
3538 if self.corner_radius > Pixels::ZERO {
3539 path.curve_to(bottom_right + curve_width, bottom_right);
3540 }
3541 path.line_to(next_top_right - curve_width);
3542 if self.corner_radius > Pixels::ZERO {
3543 path.curve_to(next_top_right + curve_height, next_top_right);
3544 }
3545 }
3546 }
3547 } else {
3548 let curve_width = curve_width(line.start_x, line.end_x);
3549 path.line_to(bottom_right - curve_height);
3550 if self.corner_radius > Pixels::ZERO {
3551 path.curve_to(bottom_right - curve_width, bottom_right);
3552 }
3553
3554 let bottom_left = point(line.start_x, bottom_right.y);
3555 path.line_to(bottom_left + curve_width);
3556 if self.corner_radius > Pixels::ZERO {
3557 path.curve_to(bottom_left - curve_height, bottom_left);
3558 }
3559 }
3560 }
3561
3562 if first_line.start_x > last_line.start_x {
3563 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3564 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3565 path.line_to(second_top_left + curve_height);
3566 if self.corner_radius > Pixels::ZERO {
3567 path.curve_to(second_top_left + curve_width, second_top_left);
3568 }
3569 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3570 path.line_to(first_bottom_left - curve_width);
3571 if self.corner_radius > Pixels::ZERO {
3572 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3573 }
3574 }
3575
3576 path.line_to(first_top_left + curve_height);
3577 if self.corner_radius > Pixels::ZERO {
3578 path.curve_to(first_top_left + top_curve_width, first_top_left);
3579 }
3580 path.line_to(first_top_right - top_curve_width);
3581
3582 cx.paint_path(path, self.color);
3583 }
3584}
3585
3586pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3587 (delta.pow(1.5) / 100.0).into()
3588}
3589
3590fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3591 (delta.pow(1.2) / 300.0).into()
3592}
3593
3594#[cfg(test)]
3595mod tests {
3596 use super::*;
3597 use crate::{
3598 display_map::{BlockDisposition, BlockProperties},
3599 editor_tests::{init_test, update_test_language_settings},
3600 Editor, MultiBuffer,
3601 };
3602 use gpui::TestAppContext;
3603 use language::language_settings;
3604 use log::info;
3605 use std::{num::NonZeroU32, sync::Arc};
3606 use util::test::sample_text;
3607
3608 #[gpui::test]
3609 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3610 init_test(cx, |_| {});
3611 let window = cx.add_window(|cx| {
3612 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3613 Editor::new(EditorMode::Full, buffer, None, cx)
3614 });
3615
3616 let editor = window.root(cx).unwrap();
3617 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3618 let element = EditorElement::new(&editor, style);
3619
3620 let layouts = window
3621 .update(cx, |editor, cx| {
3622 let snapshot = editor.snapshot(cx);
3623 element
3624 .shape_line_numbers(
3625 0..6,
3626 &Default::default(),
3627 DisplayPoint::new(0, 0),
3628 false,
3629 &snapshot,
3630 cx,
3631 )
3632 .0
3633 })
3634 .unwrap();
3635 assert_eq!(layouts.len(), 6);
3636
3637 let relative_rows = window
3638 .update(cx, |editor, cx| {
3639 let snapshot = editor.snapshot(cx);
3640 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3641 })
3642 .unwrap();
3643 assert_eq!(relative_rows[&0], 3);
3644 assert_eq!(relative_rows[&1], 2);
3645 assert_eq!(relative_rows[&2], 1);
3646 // current line has no relative number
3647 assert_eq!(relative_rows[&4], 1);
3648 assert_eq!(relative_rows[&5], 2);
3649
3650 // works if cursor is before screen
3651 let relative_rows = window
3652 .update(cx, |editor, cx| {
3653 let snapshot = editor.snapshot(cx);
3654
3655 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3656 })
3657 .unwrap();
3658 assert_eq!(relative_rows.len(), 3);
3659 assert_eq!(relative_rows[&3], 2);
3660 assert_eq!(relative_rows[&4], 3);
3661 assert_eq!(relative_rows[&5], 4);
3662
3663 // works if cursor is after screen
3664 let relative_rows = window
3665 .update(cx, |editor, cx| {
3666 let snapshot = editor.snapshot(cx);
3667
3668 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3669 })
3670 .unwrap();
3671 assert_eq!(relative_rows.len(), 3);
3672 assert_eq!(relative_rows[&0], 5);
3673 assert_eq!(relative_rows[&1], 4);
3674 assert_eq!(relative_rows[&2], 3);
3675 }
3676
3677 #[gpui::test]
3678 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3679 init_test(cx, |_| {});
3680
3681 let window = cx.add_window(|cx| {
3682 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3683 Editor::new(EditorMode::Full, buffer, None, cx)
3684 });
3685 let editor = window.root(cx).unwrap();
3686 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3687 let mut element = EditorElement::new(&editor, style);
3688
3689 window
3690 .update(cx, |editor, cx| {
3691 editor.cursor_shape = CursorShape::Block;
3692 editor.change_selections(None, cx, |s| {
3693 s.select_ranges([
3694 Point::new(0, 0)..Point::new(1, 0),
3695 Point::new(3, 2)..Point::new(3, 3),
3696 Point::new(5, 6)..Point::new(6, 0),
3697 ]);
3698 });
3699 })
3700 .unwrap();
3701 let state = cx
3702 .update_window(window.into(), |view, cx| {
3703 cx.with_element_context(|cx| {
3704 cx.with_view_id(view.entity_id(), |cx| {
3705 element.compute_layout(
3706 Bounds {
3707 origin: point(px(500.), px(500.)),
3708 size: size(px(500.), px(500.)),
3709 },
3710 cx,
3711 )
3712 })
3713 })
3714 })
3715 .unwrap();
3716
3717 assert_eq!(state.selections.len(), 1);
3718 let local_selections = &state.selections[0].1;
3719 assert_eq!(local_selections.len(), 3);
3720 // moves cursor back one line
3721 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3722 assert_eq!(
3723 local_selections[0].range,
3724 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3725 );
3726
3727 // moves cursor back one column
3728 assert_eq!(
3729 local_selections[1].range,
3730 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3731 );
3732 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3733
3734 // leaves cursor on the max point
3735 assert_eq!(
3736 local_selections[2].range,
3737 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3738 );
3739 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3740
3741 // active lines does not include 1 (even though the range of the selection does)
3742 assert_eq!(
3743 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3744 vec![0, 3, 5, 6]
3745 );
3746
3747 // multi-buffer support
3748 // in DisplayPoint coordinates, this is what we're dealing with:
3749 // 0: [[file
3750 // 1: header]]
3751 // 2: aaaaaa
3752 // 3: bbbbbb
3753 // 4: cccccc
3754 // 5:
3755 // 6: ...
3756 // 7: ffffff
3757 // 8: gggggg
3758 // 9: hhhhhh
3759 // 10:
3760 // 11: [[file
3761 // 12: header]]
3762 // 13: bbbbbb
3763 // 14: cccccc
3764 // 15: dddddd
3765 let window = cx.add_window(|cx| {
3766 let buffer = MultiBuffer::build_multi(
3767 [
3768 (
3769 &(sample_text(8, 6, 'a') + "\n"),
3770 vec![
3771 Point::new(0, 0)..Point::new(3, 0),
3772 Point::new(4, 0)..Point::new(7, 0),
3773 ],
3774 ),
3775 (
3776 &(sample_text(8, 6, 'a') + "\n"),
3777 vec![Point::new(1, 0)..Point::new(3, 0)],
3778 ),
3779 ],
3780 cx,
3781 );
3782 Editor::new(EditorMode::Full, buffer, None, cx)
3783 });
3784 let editor = window.root(cx).unwrap();
3785 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3786 let mut element = EditorElement::new(&editor, style);
3787 let _state = window.update(cx, |editor, cx| {
3788 editor.cursor_shape = CursorShape::Block;
3789 editor.change_selections(None, cx, |s| {
3790 s.select_display_ranges([
3791 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3792 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3793 ]);
3794 });
3795 });
3796
3797 let state = cx
3798 .update_window(window.into(), |view, cx| {
3799 cx.with_element_context(|cx| {
3800 cx.with_view_id(view.entity_id(), |cx| {
3801 element.compute_layout(
3802 Bounds {
3803 origin: point(px(500.), px(500.)),
3804 size: size(px(500.), px(500.)),
3805 },
3806 cx,
3807 )
3808 })
3809 })
3810 })
3811 .unwrap();
3812 assert_eq!(state.selections.len(), 1);
3813 let local_selections = &state.selections[0].1;
3814 assert_eq!(local_selections.len(), 2);
3815
3816 // moves cursor on excerpt boundary back a line
3817 // and doesn't allow selection to bleed through
3818 assert_eq!(
3819 local_selections[0].range,
3820 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3821 );
3822 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3823 // moves cursor on buffer boundary back two lines
3824 // and doesn't allow selection to bleed through
3825 assert_eq!(
3826 local_selections[1].range,
3827 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3828 );
3829 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3830 }
3831
3832 #[gpui::test]
3833 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3834 init_test(cx, |_| {});
3835
3836 let window = cx.add_window(|cx| {
3837 let buffer = MultiBuffer::build_simple("", cx);
3838 Editor::new(EditorMode::Full, buffer, None, cx)
3839 });
3840 let editor = window.root(cx).unwrap();
3841 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3842 window
3843 .update(cx, |editor, cx| {
3844 editor.set_placeholder_text("hello", cx);
3845 editor.insert_blocks(
3846 [BlockProperties {
3847 style: BlockStyle::Fixed,
3848 disposition: BlockDisposition::Above,
3849 height: 3,
3850 position: Anchor::min(),
3851 render: Arc::new(|_| div().into_any()),
3852 }],
3853 None,
3854 cx,
3855 );
3856
3857 // Blur the editor so that it displays placeholder text.
3858 cx.blur();
3859 })
3860 .unwrap();
3861
3862 let mut element = EditorElement::new(&editor, style);
3863 let state = cx
3864 .update_window(window.into(), |view, cx| {
3865 cx.with_element_context(|cx| {
3866 cx.with_view_id(view.entity_id(), |cx| {
3867 element.compute_layout(
3868 Bounds {
3869 origin: point(px(500.), px(500.)),
3870 size: size(px(500.), px(500.)),
3871 },
3872 cx,
3873 )
3874 })
3875 })
3876 })
3877 .unwrap();
3878 let size = state.position_map.size;
3879
3880 assert_eq!(state.position_map.line_layouts.len(), 4);
3881 assert_eq!(
3882 state
3883 .line_numbers
3884 .iter()
3885 .map(Option::is_some)
3886 .collect::<Vec<_>>(),
3887 &[false, false, false, true]
3888 );
3889
3890 // Don't panic.
3891 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3892 cx.update_window(window.into(), |_, cx| {
3893 cx.with_element_context(|cx| element.paint(bounds, &mut (), cx))
3894 })
3895 .unwrap()
3896 }
3897
3898 #[gpui::test]
3899 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3900 const TAB_SIZE: u32 = 4;
3901
3902 let input_text = "\t \t|\t| a b";
3903 let expected_invisibles = vec![
3904 Invisible::Tab {
3905 line_start_offset: 0,
3906 },
3907 Invisible::Whitespace {
3908 line_offset: TAB_SIZE as usize,
3909 },
3910 Invisible::Tab {
3911 line_start_offset: TAB_SIZE as usize + 1,
3912 },
3913 Invisible::Tab {
3914 line_start_offset: TAB_SIZE as usize * 2 + 1,
3915 },
3916 Invisible::Whitespace {
3917 line_offset: TAB_SIZE as usize * 3 + 1,
3918 },
3919 Invisible::Whitespace {
3920 line_offset: TAB_SIZE as usize * 3 + 3,
3921 },
3922 ];
3923 assert_eq!(
3924 expected_invisibles.len(),
3925 input_text
3926 .chars()
3927 .filter(|initial_char| initial_char.is_whitespace())
3928 .count(),
3929 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3930 );
3931
3932 init_test(cx, |s| {
3933 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3934 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3935 });
3936
3937 let actual_invisibles =
3938 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3939
3940 assert_eq!(expected_invisibles, actual_invisibles);
3941 }
3942
3943 #[gpui::test]
3944 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3945 init_test(cx, |s| {
3946 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3947 s.defaults.tab_size = NonZeroU32::new(4);
3948 });
3949
3950 for editor_mode_without_invisibles in [
3951 EditorMode::SingleLine,
3952 EditorMode::AutoHeight { max_lines: 100 },
3953 ] {
3954 let invisibles = collect_invisibles_from_new_editor(
3955 cx,
3956 editor_mode_without_invisibles,
3957 "\t\t\t| | a b",
3958 px(500.0),
3959 );
3960 assert!(invisibles.is_empty(),
3961 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3962 }
3963 }
3964
3965 #[gpui::test]
3966 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3967 let tab_size = 4;
3968 let input_text = "a\tbcd ".repeat(9);
3969 let repeated_invisibles = [
3970 Invisible::Tab {
3971 line_start_offset: 1,
3972 },
3973 Invisible::Whitespace {
3974 line_offset: tab_size as usize + 3,
3975 },
3976 Invisible::Whitespace {
3977 line_offset: tab_size as usize + 4,
3978 },
3979 Invisible::Whitespace {
3980 line_offset: tab_size as usize + 5,
3981 },
3982 ];
3983 let expected_invisibles = std::iter::once(repeated_invisibles)
3984 .cycle()
3985 .take(9)
3986 .flatten()
3987 .collect::<Vec<_>>();
3988 assert_eq!(
3989 expected_invisibles.len(),
3990 input_text
3991 .chars()
3992 .filter(|initial_char| initial_char.is_whitespace())
3993 .count(),
3994 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3995 );
3996 info!("Expected invisibles: {expected_invisibles:?}");
3997
3998 init_test(cx, |_| {});
3999
4000 // Put the same string with repeating whitespace pattern into editors of various size,
4001 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4002 let resize_step = 10.0;
4003 let mut editor_width = 200.0;
4004 while editor_width <= 1000.0 {
4005 update_test_language_settings(cx, |s| {
4006 s.defaults.tab_size = NonZeroU32::new(tab_size);
4007 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4008 s.defaults.preferred_line_length = Some(editor_width as u32);
4009 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4010 });
4011
4012 let actual_invisibles = collect_invisibles_from_new_editor(
4013 cx,
4014 EditorMode::Full,
4015 &input_text,
4016 px(editor_width),
4017 );
4018
4019 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4020 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4021 let mut i = 0;
4022 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4023 i = actual_index;
4024 match expected_invisibles.get(i) {
4025 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4026 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4027 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4028 _ => {
4029 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4030 }
4031 },
4032 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4033 }
4034 }
4035 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4036 assert!(
4037 missing_expected_invisibles.is_empty(),
4038 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4039 );
4040
4041 editor_width += resize_step;
4042 }
4043 }
4044
4045 fn collect_invisibles_from_new_editor(
4046 cx: &mut TestAppContext,
4047 editor_mode: EditorMode,
4048 input_text: &str,
4049 editor_width: Pixels,
4050 ) -> Vec<Invisible> {
4051 info!(
4052 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4053 editor_width.0
4054 );
4055 let window = cx.add_window(|cx| {
4056 let buffer = MultiBuffer::build_simple(&input_text, cx);
4057 Editor::new(editor_mode, buffer, None, cx)
4058 });
4059 let editor = window.root(cx).unwrap();
4060 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4061 let mut element = EditorElement::new(&editor, style);
4062 window
4063 .update(cx, |editor, cx| {
4064 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4065 editor.set_wrap_width(Some(editor_width), cx);
4066 })
4067 .unwrap();
4068 let layout_state = cx
4069 .update_window(window.into(), |_, cx| {
4070 cx.with_element_context(|cx| {
4071 element.compute_layout(
4072 Bounds {
4073 origin: point(px(500.), px(500.)),
4074 size: size(px(500.), px(500.)),
4075 },
4076 cx,
4077 )
4078 })
4079 })
4080 .unwrap();
4081
4082 layout_state
4083 .position_map
4084 .line_layouts
4085 .iter()
4086 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
4087 .flatten()
4088 .cloned()
4089 .collect()
4090 }
4091}
4092
4093pub fn register_action<T: Action>(
4094 view: &View<Editor>,
4095 cx: &mut WindowContext,
4096 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4097) {
4098 let view = view.clone();
4099 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4100 let action = action.downcast_ref().unwrap();
4101 if phase == DispatchPhase::Bubble {
4102 view.update(cx, |editor, cx| {
4103 listener(editor, action, cx);
4104 })
4105 }
4106 })
4107}
4108
4109fn compute_auto_height_layout(
4110 editor: &mut Editor,
4111 max_lines: usize,
4112 max_line_number_width: Pixels,
4113 known_dimensions: Size<Option<Pixels>>,
4114 cx: &mut ViewContext<Editor>,
4115) -> Option<Size<Pixels>> {
4116 let width = known_dimensions.width?;
4117 if let Some(height) = known_dimensions.height {
4118 return Some(size(width, height));
4119 }
4120
4121 let style = editor.style.as_ref().unwrap();
4122 let font_id = cx.text_system().resolve_font(&style.text.font());
4123 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4124 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4125 let em_width = cx
4126 .text_system()
4127 .typographic_bounds(font_id, font_size, 'm')
4128 .unwrap()
4129 .size
4130 .width;
4131
4132 let mut snapshot = editor.snapshot(cx);
4133 let gutter_dimensions =
4134 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4135
4136 editor.gutter_width = gutter_dimensions.width;
4137 let text_width = width - gutter_dimensions.width;
4138 let overscroll = size(em_width, px(0.));
4139
4140 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4141 if editor.set_wrap_width(Some(editor_width), cx) {
4142 snapshot = editor.snapshot(cx);
4143 }
4144
4145 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4146 let height = scroll_height
4147 .max(line_height)
4148 .min(line_height * max_lines as f32);
4149
4150 Some(size(width, height))
4151}