1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::ShowScrollbar,
7 git::{diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::{
9 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
10 },
11 items::BufferSearchHighlights,
12 mouse_context_menu,
13 scroll::scroll_amount::ScrollAmount,
14 CursorShape, DisplayPoint, DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode,
15 EditorSettings, EditorSnapshot, EditorStyle, GutterDimensions, HalfPageDown, HalfPageUp,
16 HoveredCursor, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, SelectPhase, Selection,
17 SoftWrap, ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
18};
19use anyhow::Result;
20use collections::{BTreeMap, HashMap};
21use git::diff::DiffHunkStatus;
22use gpui::{
23 div, fill, outline, overlay, point, px, quad, relative, size, transparent_black, Action,
24 AnchorCorner, AnyElement, AvailableSpace, Bounds, ContentMask, Corners, CursorStyle,
25 DispatchPhase, Edges, Element, ElementInputHandler, Entity, Hsla, InteractiveBounds,
26 InteractiveElement, IntoElement, ModifiersChangedEvent, MouseButton, MouseDownEvent,
27 MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine,
28 SharedString, Size, StackingOrder, StatefulInteractiveElement, Style, Styled, TextRun,
29 TextStyle, View, ViewContext, WindowContext,
30};
31use itertools::Itertools;
32use language::language_settings::ShowWhitespaceSetting;
33use lsp::DiagnosticSeverity;
34use multi_buffer::Anchor;
35use project::{
36 project_settings::{GitGutterSetting, ProjectSettings},
37 ProjectPath,
38};
39use settings::Settings;
40use smallvec::SmallVec;
41use std::{
42 any::TypeId,
43 borrow::Cow,
44 cmp::{self, Ordering},
45 fmt::Write,
46 iter,
47 ops::Range,
48 sync::Arc,
49};
50use sum_tree::Bias;
51use theme::{ActiveTheme, PlayerColor};
52use ui::prelude::*;
53use ui::{h_flex, ButtonLike, ButtonStyle, IconButton, Tooltip};
54use util::ResultExt;
55use workspace::item::Item;
56
57struct SelectionLayout {
58 head: DisplayPoint,
59 cursor_shape: CursorShape,
60 is_newest: bool,
61 is_local: bool,
62 range: Range<DisplayPoint>,
63 active_rows: Range<u32>,
64 user_name: Option<SharedString>,
65}
66
67impl SelectionLayout {
68 fn new<T: ToPoint + ToDisplayPoint + Clone>(
69 selection: Selection<T>,
70 line_mode: bool,
71 cursor_shape: CursorShape,
72 map: &DisplaySnapshot,
73 is_newest: bool,
74 is_local: bool,
75 user_name: Option<SharedString>,
76 ) -> Self {
77 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
78 let display_selection = point_selection.map(|p| p.to_display_point(map));
79 let mut range = display_selection.range();
80 let mut head = display_selection.head();
81 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
82 ..map.next_line_boundary(point_selection.end).1.row();
83
84 // vim visual line mode
85 if line_mode {
86 let point_range = map.expand_to_line(point_selection.range());
87 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
88 }
89
90 // any vim visual mode (including line mode)
91 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
92 if head.column() > 0 {
93 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
94 } else if head.row() > 0 && head != map.max_point() {
95 head = map.clip_point(
96 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
97 Bias::Left,
98 );
99 // updating range.end is a no-op unless you're cursor is
100 // on the newline containing a multi-buffer divider
101 // in which case the clip_point may have moved the head up
102 // an additional row.
103 range.end = DisplayPoint::new(head.row() + 1, 0);
104 active_rows.end = head.row();
105 }
106 }
107
108 Self {
109 head,
110 cursor_shape,
111 is_newest,
112 is_local,
113 range,
114 active_rows,
115 user_name,
116 }
117 }
118}
119
120pub struct EditorElement {
121 editor: View<Editor>,
122 style: EditorStyle,
123}
124
125impl EditorElement {
126 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
127 Self {
128 editor: editor.clone(),
129 style,
130 }
131 }
132
133 fn register_actions(&self, cx: &mut WindowContext) {
134 let view = &self.editor;
135 view.update(cx, |editor, cx| {
136 for action in editor.editor_actions.iter() {
137 (action)(cx)
138 }
139 });
140
141 crate::rust_analyzer_ext::apply_related_actions(view, cx);
142 register_action(view, cx, Editor::move_left);
143 register_action(view, cx, Editor::move_right);
144 register_action(view, cx, Editor::move_down);
145 register_action(view, cx, Editor::move_down_by_lines);
146 register_action(view, cx, Editor::select_down_by_lines);
147 register_action(view, cx, Editor::move_up);
148 register_action(view, cx, Editor::move_up_by_lines);
149 register_action(view, cx, Editor::select_up_by_lines);
150 register_action(view, cx, Editor::cancel);
151 register_action(view, cx, Editor::newline);
152 register_action(view, cx, Editor::newline_above);
153 register_action(view, cx, Editor::newline_below);
154 register_action(view, cx, Editor::backspace);
155 register_action(view, cx, Editor::delete);
156 register_action(view, cx, Editor::tab);
157 register_action(view, cx, Editor::tab_prev);
158 register_action(view, cx, Editor::indent);
159 register_action(view, cx, Editor::outdent);
160 register_action(view, cx, Editor::delete_line);
161 register_action(view, cx, Editor::join_lines);
162 register_action(view, cx, Editor::sort_lines_case_sensitive);
163 register_action(view, cx, Editor::sort_lines_case_insensitive);
164 register_action(view, cx, Editor::reverse_lines);
165 register_action(view, cx, Editor::shuffle_lines);
166 register_action(view, cx, Editor::convert_to_upper_case);
167 register_action(view, cx, Editor::convert_to_lower_case);
168 register_action(view, cx, Editor::convert_to_title_case);
169 register_action(view, cx, Editor::convert_to_snake_case);
170 register_action(view, cx, Editor::convert_to_kebab_case);
171 register_action(view, cx, Editor::convert_to_upper_camel_case);
172 register_action(view, cx, Editor::convert_to_lower_camel_case);
173 register_action(view, cx, Editor::delete_to_previous_word_start);
174 register_action(view, cx, Editor::delete_to_previous_subword_start);
175 register_action(view, cx, Editor::delete_to_next_word_end);
176 register_action(view, cx, Editor::delete_to_next_subword_end);
177 register_action(view, cx, Editor::delete_to_beginning_of_line);
178 register_action(view, cx, Editor::delete_to_end_of_line);
179 register_action(view, cx, Editor::cut_to_end_of_line);
180 register_action(view, cx, Editor::duplicate_line);
181 register_action(view, cx, Editor::move_line_up);
182 register_action(view, cx, Editor::move_line_down);
183 register_action(view, cx, Editor::transpose);
184 register_action(view, cx, Editor::cut);
185 register_action(view, cx, Editor::copy);
186 register_action(view, cx, Editor::paste);
187 register_action(view, cx, Editor::undo);
188 register_action(view, cx, Editor::redo);
189 register_action(view, cx, Editor::move_page_up);
190 register_action(view, cx, Editor::move_page_down);
191 register_action(view, cx, Editor::next_screen);
192 register_action(view, cx, Editor::scroll_cursor_top);
193 register_action(view, cx, Editor::scroll_cursor_center);
194 register_action(view, cx, Editor::scroll_cursor_bottom);
195 register_action(view, cx, |editor, _: &LineDown, cx| {
196 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
197 });
198 register_action(view, cx, |editor, _: &LineUp, cx| {
199 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
200 });
201 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
202 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
203 });
204 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
205 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
206 });
207 register_action(view, cx, |editor, _: &PageDown, cx| {
208 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
209 });
210 register_action(view, cx, |editor, _: &PageUp, cx| {
211 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
212 });
213 register_action(view, cx, Editor::move_to_previous_word_start);
214 register_action(view, cx, Editor::move_to_previous_subword_start);
215 register_action(view, cx, Editor::move_to_next_word_end);
216 register_action(view, cx, Editor::move_to_next_subword_end);
217 register_action(view, cx, Editor::move_to_beginning_of_line);
218 register_action(view, cx, Editor::move_to_end_of_line);
219 register_action(view, cx, Editor::move_to_start_of_paragraph);
220 register_action(view, cx, Editor::move_to_end_of_paragraph);
221 register_action(view, cx, Editor::move_to_beginning);
222 register_action(view, cx, Editor::move_to_end);
223 register_action(view, cx, Editor::select_up);
224 register_action(view, cx, Editor::select_down);
225 register_action(view, cx, Editor::select_left);
226 register_action(view, cx, Editor::select_right);
227 register_action(view, cx, Editor::select_to_previous_word_start);
228 register_action(view, cx, Editor::select_to_previous_subword_start);
229 register_action(view, cx, Editor::select_to_next_word_end);
230 register_action(view, cx, Editor::select_to_next_subword_end);
231 register_action(view, cx, Editor::select_to_beginning_of_line);
232 register_action(view, cx, Editor::select_to_end_of_line);
233 register_action(view, cx, Editor::select_to_start_of_paragraph);
234 register_action(view, cx, Editor::select_to_end_of_paragraph);
235 register_action(view, cx, Editor::select_to_beginning);
236 register_action(view, cx, Editor::select_to_end);
237 register_action(view, cx, Editor::select_all);
238 register_action(view, cx, |editor, action, cx| {
239 editor.select_all_matches(action, cx).log_err();
240 });
241 register_action(view, cx, Editor::select_line);
242 register_action(view, cx, Editor::split_selection_into_lines);
243 register_action(view, cx, Editor::add_selection_above);
244 register_action(view, cx, Editor::add_selection_below);
245 register_action(view, cx, |editor, action, cx| {
246 editor.select_next(action, cx).log_err();
247 });
248 register_action(view, cx, |editor, action, cx| {
249 editor.select_previous(action, cx).log_err();
250 });
251 register_action(view, cx, Editor::toggle_comments);
252 register_action(view, cx, Editor::select_larger_syntax_node);
253 register_action(view, cx, Editor::select_smaller_syntax_node);
254 register_action(view, cx, Editor::move_to_enclosing_bracket);
255 register_action(view, cx, Editor::undo_selection);
256 register_action(view, cx, Editor::redo_selection);
257 register_action(view, cx, Editor::go_to_diagnostic);
258 register_action(view, cx, Editor::go_to_prev_diagnostic);
259 register_action(view, cx, Editor::go_to_hunk);
260 register_action(view, cx, Editor::go_to_prev_hunk);
261 register_action(view, cx, Editor::go_to_definition);
262 register_action(view, cx, Editor::go_to_definition_split);
263 register_action(view, cx, Editor::go_to_implementation);
264 register_action(view, cx, Editor::go_to_implementation_split);
265 register_action(view, cx, Editor::go_to_type_definition);
266 register_action(view, cx, Editor::go_to_type_definition_split);
267 register_action(view, cx, Editor::open_url);
268 register_action(view, cx, Editor::fold);
269 register_action(view, cx, Editor::fold_at);
270 register_action(view, cx, Editor::unfold_lines);
271 register_action(view, cx, Editor::unfold_at);
272 register_action(view, cx, Editor::fold_selected_ranges);
273 register_action(view, cx, Editor::show_completions);
274 register_action(view, cx, Editor::toggle_code_actions);
275 register_action(view, cx, Editor::open_excerpts);
276 register_action(view, cx, Editor::open_excerpts_in_split);
277 register_action(view, cx, Editor::toggle_soft_wrap);
278 register_action(view, cx, Editor::toggle_line_numbers);
279 register_action(view, cx, Editor::toggle_inlay_hints);
280 register_action(view, cx, hover_popover::hover);
281 register_action(view, cx, Editor::reveal_in_finder);
282 register_action(view, cx, Editor::copy_path);
283 register_action(view, cx, Editor::copy_relative_path);
284 register_action(view, cx, Editor::copy_highlight_json);
285 register_action(view, cx, Editor::copy_permalink_to_line);
286 register_action(view, cx, Editor::open_permalink_to_line);
287 register_action(view, cx, |editor, action, cx| {
288 if let Some(task) = editor.format(action, cx) {
289 task.detach_and_log_err(cx);
290 } else {
291 cx.propagate();
292 }
293 });
294 register_action(view, cx, Editor::restart_language_server);
295 register_action(view, cx, Editor::show_character_palette);
296 register_action(view, cx, |editor, action, cx| {
297 if let Some(task) = editor.confirm_completion(action, cx) {
298 task.detach_and_log_err(cx);
299 } else {
300 cx.propagate();
301 }
302 });
303 register_action(view, cx, |editor, action, cx| {
304 if let Some(task) = editor.confirm_code_action(action, cx) {
305 task.detach_and_log_err(cx);
306 } else {
307 cx.propagate();
308 }
309 });
310 register_action(view, cx, |editor, action, cx| {
311 if let Some(task) = editor.rename(action, cx) {
312 task.detach_and_log_err(cx);
313 } else {
314 cx.propagate();
315 }
316 });
317 register_action(view, cx, |editor, action, cx| {
318 if let Some(task) = editor.confirm_rename(action, cx) {
319 task.detach_and_log_err(cx);
320 } else {
321 cx.propagate();
322 }
323 });
324 register_action(view, cx, |editor, action, cx| {
325 if let Some(task) = editor.find_all_references(action, cx) {
326 task.detach_and_log_err(cx);
327 } else {
328 cx.propagate();
329 }
330 });
331 register_action(view, cx, Editor::next_copilot_suggestion);
332 register_action(view, cx, Editor::previous_copilot_suggestion);
333 register_action(view, cx, Editor::copilot_suggest);
334 register_action(view, cx, Editor::context_menu_first);
335 register_action(view, cx, Editor::context_menu_prev);
336 register_action(view, cx, Editor::context_menu_next);
337 register_action(view, cx, Editor::context_menu_last);
338 register_action(view, cx, Editor::display_cursor_names);
339 register_action(view, cx, Editor::unique_lines_case_insensitive);
340 register_action(view, cx, Editor::unique_lines_case_sensitive);
341 }
342
343 fn register_key_listeners(
344 &self,
345 cx: &mut ElementContext,
346 text_bounds: Bounds<Pixels>,
347 layout: &LayoutState,
348 ) {
349 let position_map = layout.position_map.clone();
350 let stacking_order = cx.stacking_order().clone();
351 cx.on_key_event({
352 let editor = self.editor.clone();
353 move |event: &ModifiersChangedEvent, phase, cx| {
354 if phase != DispatchPhase::Bubble {
355 return;
356 }
357
358 editor.update(cx, |editor, cx| {
359 Self::modifiers_changed(
360 editor,
361 event,
362 &position_map,
363 text_bounds,
364 &stacking_order,
365 cx,
366 )
367 })
368 }
369 });
370 }
371
372 fn modifiers_changed(
373 editor: &mut Editor,
374 event: &ModifiersChangedEvent,
375 position_map: &PositionMap,
376 text_bounds: Bounds<Pixels>,
377 stacking_order: &StackingOrder,
378 cx: &mut ViewContext<Editor>,
379 ) {
380 let mouse_position = cx.mouse_position();
381 if !text_bounds.contains(&mouse_position)
382 || !cx.was_top_layer(&mouse_position, stacking_order)
383 {
384 return;
385 }
386
387 editor.update_hovered_link(
388 position_map.point_for_position(text_bounds, mouse_position),
389 &position_map.snapshot,
390 event.modifiers,
391 cx,
392 )
393 }
394
395 fn mouse_left_down(
396 editor: &mut Editor,
397 event: &MouseDownEvent,
398 position_map: &PositionMap,
399 text_bounds: Bounds<Pixels>,
400 gutter_bounds: Bounds<Pixels>,
401 stacking_order: &StackingOrder,
402 cx: &mut ViewContext<Editor>,
403 ) {
404 let mut click_count = event.click_count;
405 let modifiers = event.modifiers;
406
407 if cx.default_prevented() {
408 return;
409 } else if gutter_bounds.contains(&event.position) {
410 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
411 } else if !text_bounds.contains(&event.position) {
412 return;
413 }
414 if !cx.was_top_layer(&event.position, stacking_order) {
415 return;
416 }
417
418 let point_for_position = position_map.point_for_position(text_bounds, event.position);
419 let position = point_for_position.previous_valid;
420 if modifiers.shift && modifiers.alt {
421 editor.select(
422 SelectPhase::BeginColumnar {
423 position,
424 goal_column: point_for_position.exact_unclipped.column(),
425 },
426 cx,
427 );
428 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
429 editor.select(
430 SelectPhase::Extend {
431 position,
432 click_count,
433 },
434 cx,
435 );
436 } else {
437 editor.select(
438 SelectPhase::Begin {
439 position,
440 add: modifiers.alt,
441 click_count,
442 },
443 cx,
444 );
445 }
446
447 cx.stop_propagation();
448 }
449
450 fn mouse_right_down(
451 editor: &mut Editor,
452 event: &MouseDownEvent,
453 position_map: &PositionMap,
454 text_bounds: Bounds<Pixels>,
455 cx: &mut ViewContext<Editor>,
456 ) {
457 if !text_bounds.contains(&event.position) {
458 return;
459 }
460 let point_for_position = position_map.point_for_position(text_bounds, event.position);
461 mouse_context_menu::deploy_context_menu(
462 editor,
463 event.position,
464 point_for_position.previous_valid,
465 cx,
466 );
467 cx.stop_propagation();
468 }
469
470 fn mouse_up(
471 editor: &mut Editor,
472 event: &MouseUpEvent,
473 position_map: &PositionMap,
474 text_bounds: Bounds<Pixels>,
475 interactive_bounds: &InteractiveBounds,
476 stacking_order: &StackingOrder,
477 cx: &mut ViewContext<Editor>,
478 ) {
479 let end_selection = editor.has_pending_selection();
480 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
481
482 if end_selection {
483 editor.select(SelectPhase::End, cx);
484 }
485
486 if interactive_bounds.visibly_contains(&event.position, cx)
487 && !pending_nonempty_selections
488 && event.modifiers.command
489 && text_bounds.contains(&event.position)
490 && cx.was_top_layer(&event.position, stacking_order)
491 {
492 let point = position_map.point_for_position(text_bounds, event.position);
493 editor.handle_click_hovered_link(point, event.modifiers, cx);
494
495 cx.stop_propagation();
496 } else if end_selection {
497 cx.stop_propagation();
498 }
499 }
500
501 fn mouse_dragged(
502 editor: &mut Editor,
503 event: &MouseMoveEvent,
504 position_map: &PositionMap,
505 text_bounds: Bounds<Pixels>,
506 _gutter_bounds: Bounds<Pixels>,
507 _stacking_order: &StackingOrder,
508 cx: &mut ViewContext<Editor>,
509 ) {
510 if !editor.has_pending_selection() {
511 return;
512 }
513
514 let point_for_position = position_map.point_for_position(text_bounds, event.position);
515 let mut scroll_delta = gpui::Point::<f32>::default();
516 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
517 let top = text_bounds.origin.y + vertical_margin;
518 let bottom = text_bounds.lower_left().y - vertical_margin;
519 if event.position.y < top {
520 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
521 }
522 if event.position.y > bottom {
523 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
524 }
525
526 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
527 let left = text_bounds.origin.x + horizontal_margin;
528 let right = text_bounds.upper_right().x - horizontal_margin;
529 if event.position.x < left {
530 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
531 }
532 if event.position.x > right {
533 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
534 }
535
536 editor.select(
537 SelectPhase::Update {
538 position: point_for_position.previous_valid,
539 goal_column: point_for_position.exact_unclipped.column(),
540 scroll_delta,
541 },
542 cx,
543 );
544 }
545
546 fn mouse_moved(
547 editor: &mut Editor,
548 event: &MouseMoveEvent,
549 position_map: &PositionMap,
550 text_bounds: Bounds<Pixels>,
551 gutter_bounds: Bounds<Pixels>,
552 stacking_order: &StackingOrder,
553 cx: &mut ViewContext<Editor>,
554 ) {
555 let modifiers = event.modifiers;
556 let text_hovered = text_bounds.contains(&event.position);
557 let gutter_hovered = gutter_bounds.contains(&event.position);
558 let was_top = cx.was_top_layer(&event.position, stacking_order);
559
560 editor.set_gutter_hovered(gutter_hovered, cx);
561
562 // Don't trigger hover popover if mouse is hovering over context menu
563 if text_hovered && was_top {
564 let point_for_position = position_map.point_for_position(text_bounds, event.position);
565
566 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
567
568 if let Some(point) = point_for_position.as_valid() {
569 hover_at(editor, Some(point), cx);
570 Self::update_visible_cursor(editor, point, position_map, cx);
571 }
572 } else {
573 editor.hide_hovered_link(cx);
574 hover_at(editor, None, cx);
575 if gutter_hovered && was_top {
576 cx.stop_propagation();
577 }
578 }
579 }
580
581 fn update_visible_cursor(
582 editor: &mut Editor,
583 point: DisplayPoint,
584 position_map: &PositionMap,
585 cx: &mut ViewContext<Editor>,
586 ) {
587 let snapshot = &position_map.snapshot;
588 let Some(hub) = editor.collaboration_hub() else {
589 return;
590 };
591 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
592 ..DisplayPoint::new(
593 point.row(),
594 (point.column() + 1).min(snapshot.line_len(point.row())),
595 );
596
597 let range = snapshot
598 .buffer_snapshot
599 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
600 ..snapshot
601 .buffer_snapshot
602 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
603
604 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
605 return;
606 };
607 let key = crate::HoveredCursor {
608 replica_id: selection.replica_id,
609 selection_id: selection.selection.id,
610 };
611 editor.hovered_cursors.insert(
612 key.clone(),
613 cx.spawn(|editor, mut cx| async move {
614 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
615 editor
616 .update(&mut cx, |editor, cx| {
617 editor.hovered_cursors.remove(&key);
618 cx.notify();
619 })
620 .ok();
621 }),
622 );
623 cx.notify()
624 }
625
626 fn paint_background(
627 &self,
628 gutter_bounds: Bounds<Pixels>,
629 text_bounds: Bounds<Pixels>,
630 layout: &LayoutState,
631 cx: &mut ElementContext,
632 ) {
633 let bounds = gutter_bounds.union(&text_bounds);
634 let scroll_top =
635 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
636 let gutter_bg = cx.theme().colors().editor_gutter_background;
637 cx.paint_quad(fill(gutter_bounds, gutter_bg));
638 cx.paint_quad(fill(text_bounds, self.style.background));
639
640 if let EditorMode::Full = layout.mode {
641 let mut active_rows = layout.active_rows.iter().peekable();
642 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
643 let mut end_row = *start_row;
644 while active_rows.peek().map_or(false, |r| {
645 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
646 }) {
647 active_rows.next().unwrap();
648 end_row += 1;
649 }
650
651 if !contains_non_empty_selection {
652 let origin = point(
653 bounds.origin.x,
654 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
655 - scroll_top,
656 );
657 let size = size(
658 bounds.size.width,
659 layout.position_map.line_height * (end_row - start_row + 1) as f32,
660 );
661 let active_line_bg = cx.theme().colors().editor_active_line_background;
662 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
663 }
664 }
665
666 if let Some(highlighted_rows) = &layout.highlighted_rows {
667 let origin = point(
668 bounds.origin.x,
669 bounds.origin.y
670 + (layout.position_map.line_height * highlighted_rows.start as f32)
671 - scroll_top,
672 );
673 let size = size(
674 bounds.size.width,
675 layout.position_map.line_height * highlighted_rows.len() as f32,
676 );
677 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
678 cx.paint_quad(fill(Bounds { origin, size }, highlighted_line_bg));
679 }
680
681 let scroll_left =
682 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
683
684 for (wrap_position, active) in layout.wrap_guides.iter() {
685 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
686 - scroll_left;
687
688 if x < text_bounds.origin.x
689 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
690 {
691 continue;
692 }
693
694 let color = if *active {
695 cx.theme().colors().editor_active_wrap_guide
696 } else {
697 cx.theme().colors().editor_wrap_guide
698 };
699 cx.paint_quad(fill(
700 Bounds {
701 origin: point(x, text_bounds.origin.y),
702 size: size(px(1.), text_bounds.size.height),
703 },
704 color,
705 ));
706 }
707 }
708 }
709
710 fn paint_gutter(
711 &mut self,
712 bounds: Bounds<Pixels>,
713 layout: &mut LayoutState,
714 cx: &mut ElementContext,
715 ) {
716 let line_height = layout.position_map.line_height;
717
718 let scroll_position = layout.position_map.snapshot.scroll_position();
719 let scroll_top = scroll_position.y * line_height;
720
721 if bounds.contains(&cx.mouse_position()) {
722 let stacking_order = cx.stacking_order().clone();
723 cx.set_cursor_style(CursorStyle::Arrow, stacking_order);
724 }
725
726 let show_git_gutter = matches!(
727 ProjectSettings::get_global(cx).git.git_gutter,
728 Some(GitGutterSetting::TrackedFiles)
729 );
730
731 if show_git_gutter {
732 Self::paint_diff_hunks(bounds, layout, cx);
733 }
734
735 let gutter_settings = EditorSettings::get_global(cx).gutter;
736
737 for (ix, line) in layout.line_numbers.iter().enumerate() {
738 if let Some(line) = line {
739 let line_origin = bounds.origin
740 + point(
741 bounds.size.width - line.width - layout.gutter_dimensions.right_padding,
742 ix as f32 * line_height - (scroll_top % line_height),
743 );
744
745 line.paint(line_origin, line_height, cx).log_err();
746 }
747 }
748
749 cx.with_z_index(1, |cx| {
750 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
751 if let Some(fold_indicator) = fold_indicator {
752 debug_assert!(gutter_settings.folds);
753 let mut fold_indicator = fold_indicator.into_any_element();
754 let available_space = size(
755 AvailableSpace::MinContent,
756 AvailableSpace::Definite(line_height * 0.55),
757 );
758 let fold_indicator_size = fold_indicator.measure(available_space, cx);
759
760 let position = point(
761 bounds.size.width - layout.gutter_dimensions.right_padding,
762 ix as f32 * line_height - (scroll_top % line_height),
763 );
764 let centering_offset = point(
765 (layout.gutter_dimensions.right_padding + layout.gutter_dimensions.margin
766 - fold_indicator_size.width)
767 / 2.,
768 (line_height - fold_indicator_size.height) / 2.,
769 );
770 let origin = bounds.origin + position + centering_offset;
771 fold_indicator.draw(origin, available_space, cx);
772 }
773 }
774
775 if let Some(indicator) = layout.code_actions_indicator.take() {
776 debug_assert!(gutter_settings.code_actions);
777 let mut button = indicator.button.into_any_element();
778 let available_space = size(
779 AvailableSpace::MinContent,
780 AvailableSpace::Definite(line_height),
781 );
782 let indicator_size = button.measure(available_space, cx);
783
784 let mut x = Pixels::ZERO;
785 let mut y = indicator.row as f32 * line_height - scroll_top;
786 // Center indicator.
787 x += (layout.gutter_dimensions.margin + layout.gutter_dimensions.left_padding
788 - indicator_size.width)
789 / 2.;
790 y += (line_height - indicator_size.height) / 2.;
791
792 button.draw(bounds.origin + point(x, y), available_space, cx);
793 }
794 });
795 }
796
797 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut ElementContext) {
798 let line_height = layout.position_map.line_height;
799
800 let scroll_position = layout.position_map.snapshot.scroll_position();
801 let scroll_top = scroll_position.y * line_height;
802
803 for hunk in &layout.display_hunks {
804 let (display_row_range, status) = match hunk {
805 //TODO: This rendering is entirely a horrible hack
806 &DisplayDiffHunk::Folded { display_row: row } => {
807 let start_y = row as f32 * line_height - scroll_top;
808 let end_y = start_y + line_height;
809
810 let width = 0.275 * line_height;
811 let highlight_origin = bounds.origin + point(-width, start_y);
812 let highlight_size = size(width * 2., end_y - start_y);
813 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
814 cx.paint_quad(quad(
815 highlight_bounds,
816 Corners::all(1. * line_height),
817 cx.theme().status().modified,
818 Edges::default(),
819 transparent_black(),
820 ));
821
822 continue;
823 }
824
825 DisplayDiffHunk::Unfolded {
826 display_row_range,
827 status,
828 } => (display_row_range, status),
829 };
830
831 let color = match status {
832 DiffHunkStatus::Added => cx.theme().status().created,
833 DiffHunkStatus::Modified => cx.theme().status().modified,
834
835 //TODO: This rendering is entirely a horrible hack
836 DiffHunkStatus::Removed => {
837 let row = display_row_range.start;
838
839 let offset = line_height / 2.;
840 let start_y = row as f32 * line_height - offset - scroll_top;
841 let end_y = start_y + line_height;
842
843 let width = 0.275 * line_height;
844 let highlight_origin = bounds.origin + point(-width, start_y);
845 let highlight_size = size(width * 2., end_y - start_y);
846 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
847 cx.paint_quad(quad(
848 highlight_bounds,
849 Corners::all(1. * line_height),
850 cx.theme().status().deleted,
851 Edges::default(),
852 transparent_black(),
853 ));
854
855 continue;
856 }
857 };
858
859 let start_row = display_row_range.start;
860 let end_row = display_row_range.end;
861 // If we're in a multibuffer, row range span might include an
862 // excerpt header, so if we were to draw the marker straight away,
863 // the hunk might include the rows of that header.
864 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
865 // Instead, we simply check whether the range we're dealing with includes
866 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
867 let end_row_in_current_excerpt = layout
868 .position_map
869 .snapshot
870 .blocks_in_range(start_row..end_row)
871 .find_map(|(start_row, block)| {
872 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
873 Some(start_row)
874 } else {
875 None
876 }
877 })
878 .unwrap_or(end_row);
879
880 let start_y = start_row as f32 * line_height - scroll_top;
881 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
882
883 let width = 0.275 * line_height;
884 let highlight_origin = bounds.origin + point(-width, start_y);
885 let highlight_size = size(width * 2., end_y - start_y);
886 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
887 cx.paint_quad(quad(
888 highlight_bounds,
889 Corners::all(0.05 * line_height),
890 color,
891 Edges::default(),
892 transparent_black(),
893 ));
894 }
895 }
896
897 fn paint_text(
898 &mut self,
899 text_bounds: Bounds<Pixels>,
900 layout: &mut LayoutState,
901 cx: &mut ElementContext,
902 ) {
903 let start_row = layout.visible_display_row_range.start;
904 // 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.
905 let content_origin =
906 text_bounds.origin + point(layout.gutter_dimensions.margin, Pixels::ZERO);
907 let line_end_overshoot = 0.15 * layout.position_map.line_height;
908 let whitespace_setting = self
909 .editor
910 .read(cx)
911 .buffer
912 .read(cx)
913 .settings_at(0, cx)
914 .show_whitespaces;
915
916 cx.with_content_mask(
917 Some(ContentMask {
918 bounds: text_bounds,
919 }),
920 |cx| {
921 let interactive_text_bounds = InteractiveBounds {
922 bounds: text_bounds,
923 stacking_order: cx.stacking_order().clone(),
924 };
925 if text_bounds.contains(&cx.mouse_position()) {
926 if self
927 .editor
928 .read(cx)
929 .hovered_link_state
930 .as_ref()
931 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
932 {
933 cx.set_cursor_style(
934 CursorStyle::PointingHand,
935 interactive_text_bounds.stacking_order.clone(),
936 );
937 } else {
938 cx.set_cursor_style(
939 CursorStyle::IBeam,
940 interactive_text_bounds.stacking_order.clone(),
941 );
942 }
943 }
944
945 let fold_corner_radius = 0.15 * layout.position_map.line_height;
946 cx.with_element_id(Some("folds"), |cx| {
947 let snapshot = &layout.position_map.snapshot;
948
949 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
950 let fold_range = fold.range.clone();
951 let display_range = fold.range.start.to_display_point(&snapshot)
952 ..fold.range.end.to_display_point(&snapshot);
953 debug_assert_eq!(display_range.start.row(), display_range.end.row());
954 let row = display_range.start.row();
955 debug_assert!(row < layout.visible_display_row_range.end);
956 let Some(line_layout) = &layout
957 .position_map
958 .line_layouts
959 .get((row - layout.visible_display_row_range.start) as usize)
960 .map(|l| &l.line)
961 else {
962 continue;
963 };
964
965 let start_x = content_origin.x
966 + line_layout.x_for_index(display_range.start.column() as usize)
967 - layout.position_map.scroll_position.x;
968 let start_y = content_origin.y
969 + row as f32 * layout.position_map.line_height
970 - layout.position_map.scroll_position.y;
971 let end_x = content_origin.x
972 + line_layout.x_for_index(display_range.end.column() as usize)
973 - layout.position_map.scroll_position.x;
974
975 let fold_bounds = Bounds {
976 origin: point(start_x, start_y),
977 size: size(end_x - start_x, layout.position_map.line_height),
978 };
979
980 let fold_background = cx.with_z_index(1, |cx| {
981 div()
982 .id(fold.id)
983 .size_full()
984 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
985 .on_click(cx.listener_for(
986 &self.editor,
987 move |editor: &mut Editor, _, cx| {
988 editor.unfold_ranges(
989 [fold_range.start..fold_range.end],
990 true,
991 false,
992 cx,
993 );
994 cx.stop_propagation();
995 },
996 ))
997 .draw_and_update_state(
998 fold_bounds.origin,
999 fold_bounds.size,
1000 cx,
1001 |fold_element_state, cx| {
1002 if fold_element_state.is_active() {
1003 cx.theme().colors().ghost_element_active
1004 } else if fold_bounds.contains(&cx.mouse_position()) {
1005 cx.theme().colors().ghost_element_hover
1006 } else {
1007 cx.theme().colors().ghost_element_background
1008 }
1009 },
1010 )
1011 });
1012
1013 self.paint_highlighted_range(
1014 display_range.clone(),
1015 fold_background,
1016 fold_corner_radius,
1017 fold_corner_radius * 2.,
1018 layout,
1019 content_origin,
1020 text_bounds,
1021 cx,
1022 );
1023 }
1024 });
1025
1026 for (range, color) in &layout.highlighted_ranges {
1027 self.paint_highlighted_range(
1028 range.clone(),
1029 *color,
1030 Pixels::ZERO,
1031 line_end_overshoot,
1032 layout,
1033 content_origin,
1034 text_bounds,
1035 cx,
1036 );
1037 }
1038
1039 let mut cursors = SmallVec::<[Cursor; 32]>::new();
1040 let corner_radius = 0.15 * layout.position_map.line_height;
1041 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
1042
1043 for (participant_ix, (player_color, selections)) in
1044 layout.selections.iter().enumerate()
1045 {
1046 for selection in selections.into_iter() {
1047 self.paint_highlighted_range(
1048 selection.range.clone(),
1049 player_color.selection,
1050 corner_radius,
1051 corner_radius * 2.,
1052 layout,
1053 content_origin,
1054 text_bounds,
1055 cx,
1056 );
1057
1058 if selection.is_local && !selection.range.is_empty() {
1059 invisible_display_ranges.push(selection.range.clone());
1060 }
1061
1062 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
1063 let cursor_position = selection.head;
1064 if layout
1065 .visible_display_row_range
1066 .contains(&cursor_position.row())
1067 {
1068 let cursor_row_layout = &layout.position_map.line_layouts
1069 [(cursor_position.row() - start_row) as usize]
1070 .line;
1071 let cursor_column = cursor_position.column() as usize;
1072
1073 let cursor_character_x =
1074 cursor_row_layout.x_for_index(cursor_column);
1075 let mut block_width = cursor_row_layout
1076 .x_for_index(cursor_column + 1)
1077 - cursor_character_x;
1078 if block_width == Pixels::ZERO {
1079 block_width = layout.position_map.em_width;
1080 }
1081 let block_text = if let CursorShape::Block = selection.cursor_shape
1082 {
1083 layout
1084 .position_map
1085 .snapshot
1086 .chars_at(cursor_position)
1087 .next()
1088 .and_then(|(character, _)| {
1089 let text = if character == '\n' {
1090 SharedString::from(" ")
1091 } else {
1092 SharedString::from(character.to_string())
1093 };
1094 let len = text.len();
1095 cx.text_system()
1096 .shape_line(
1097 text,
1098 cursor_row_layout.font_size,
1099 &[TextRun {
1100 len,
1101 font: self.style.text.font(),
1102 color: self.style.background,
1103 background_color: None,
1104 strikethrough: None,
1105 underline: None,
1106 }],
1107 )
1108 .log_err()
1109 })
1110 } else {
1111 None
1112 };
1113
1114 let x = cursor_character_x - layout.position_map.scroll_position.x;
1115 let y = cursor_position.row() as f32
1116 * layout.position_map.line_height
1117 - layout.position_map.scroll_position.y;
1118 if selection.is_newest {
1119 self.editor.update(cx, |editor, _| {
1120 editor.pixel_position_of_newest_cursor = Some(point(
1121 text_bounds.origin.x + x + block_width / 2.,
1122 text_bounds.origin.y
1123 + y
1124 + layout.position_map.line_height / 2.,
1125 ))
1126 });
1127 }
1128
1129 cursors.push(Cursor {
1130 color: player_color.cursor,
1131 block_width,
1132 origin: point(x, y),
1133 line_height: layout.position_map.line_height,
1134 shape: selection.cursor_shape,
1135 block_text,
1136 cursor_name: selection.user_name.clone().map(|name| {
1137 CursorName {
1138 string: name,
1139 color: self.style.background,
1140 is_top_row: cursor_position.row() == 0,
1141 z_index: (participant_ix % 256).try_into().unwrap(),
1142 }
1143 }),
1144 });
1145 }
1146 }
1147 }
1148 }
1149
1150 for (ix, line_with_invisibles) in
1151 layout.position_map.line_layouts.iter().enumerate()
1152 {
1153 let row = start_row + ix as u32;
1154 line_with_invisibles.draw(
1155 layout,
1156 row,
1157 content_origin,
1158 whitespace_setting,
1159 &invisible_display_ranges,
1160 cx,
1161 )
1162 }
1163
1164 cx.with_z_index(0, |cx| self.paint_redactions(text_bounds, &layout, cx));
1165
1166 cx.with_z_index(1, |cx| {
1167 for cursor in cursors {
1168 cursor.paint(content_origin, cx);
1169 }
1170 });
1171 },
1172 )
1173 }
1174
1175 fn paint_redactions(
1176 &mut self,
1177 text_bounds: Bounds<Pixels>,
1178 layout: &LayoutState,
1179 cx: &mut ElementContext,
1180 ) {
1181 let content_origin =
1182 text_bounds.origin + point(layout.gutter_dimensions.margin, Pixels::ZERO);
1183 let line_end_overshoot = layout.line_end_overshoot();
1184
1185 // A softer than perfect black
1186 let redaction_color = gpui::rgb(0x0e1111);
1187
1188 for range in layout.redacted_ranges.iter() {
1189 self.paint_highlighted_range(
1190 range.clone(),
1191 redaction_color.into(),
1192 Pixels::ZERO,
1193 line_end_overshoot,
1194 layout,
1195 content_origin,
1196 text_bounds,
1197 cx,
1198 );
1199 }
1200 }
1201
1202 fn paint_overlays(
1203 &mut self,
1204 text_bounds: Bounds<Pixels>,
1205 layout: &mut LayoutState,
1206 cx: &mut ElementContext,
1207 ) {
1208 let content_origin =
1209 text_bounds.origin + point(layout.gutter_dimensions.margin, Pixels::ZERO);
1210 let start_row = layout.visible_display_row_range.start;
1211 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1212 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1213 let context_menu_size = context_menu.measure(available_space, cx);
1214
1215 let cursor_row_layout =
1216 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1217 let x = cursor_row_layout.x_for_index(position.column() as usize)
1218 - layout.position_map.scroll_position.x;
1219 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1220 - layout.position_map.scroll_position.y;
1221 let mut list_origin = content_origin + point(x, y);
1222 let list_width = context_menu_size.width;
1223 let list_height = context_menu_size.height;
1224
1225 // Snap the right edge of the list to the right edge of the window if
1226 // its horizontal bounds overflow.
1227 if list_origin.x + list_width > cx.viewport_size().width {
1228 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1229 }
1230
1231 if list_origin.y + list_height > text_bounds.lower_right().y {
1232 list_origin.y -= layout.position_map.line_height + list_height;
1233 }
1234
1235 cx.break_content_mask(|cx| context_menu.draw(list_origin, available_space, cx));
1236 }
1237
1238 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1239 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1240
1241 // This is safe because we check on layout whether the required row is available
1242 let hovered_row_layout =
1243 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1244
1245 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1246 // height. This is the size we will use to decide whether to render popovers above or below
1247 // the hovered line.
1248 let first_size = hover_popovers[0].measure(available_space, cx);
1249 let height_to_reserve =
1250 first_size.height + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1251
1252 // Compute Hovered Point
1253 let x = hovered_row_layout.x_for_index(position.column() as usize)
1254 - layout.position_map.scroll_position.x;
1255 let y = position.row() as f32 * layout.position_map.line_height
1256 - layout.position_map.scroll_position.y;
1257 let hovered_point = content_origin + point(x, y);
1258
1259 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1260 // There is enough space above. Render popovers above the hovered point
1261 let mut current_y = hovered_point.y;
1262 for mut hover_popover in hover_popovers {
1263 let size = hover_popover.measure(available_space, cx);
1264 let mut popover_origin = point(hovered_point.x, current_y - size.height);
1265
1266 let x_out_of_bounds =
1267 text_bounds.upper_right().x - (popover_origin.x + size.width);
1268 if x_out_of_bounds < Pixels::ZERO {
1269 popover_origin.x = popover_origin.x + x_out_of_bounds;
1270 }
1271
1272 if cx.was_top_layer(&popover_origin, cx.stacking_order()) {
1273 cx.break_content_mask(|cx| {
1274 hover_popover.draw(popover_origin, available_space, cx)
1275 });
1276 }
1277
1278 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1279 }
1280 } else {
1281 // There is not enough space above. Render popovers below the hovered point
1282 let mut current_y = hovered_point.y + layout.position_map.line_height;
1283 for mut hover_popover in hover_popovers {
1284 let size = hover_popover.measure(available_space, cx);
1285 let mut popover_origin = point(hovered_point.x, current_y);
1286
1287 let x_out_of_bounds =
1288 text_bounds.upper_right().x - (popover_origin.x + size.width);
1289 if x_out_of_bounds < Pixels::ZERO {
1290 popover_origin.x = popover_origin.x + x_out_of_bounds;
1291 }
1292
1293 hover_popover.draw(popover_origin, available_space, cx);
1294
1295 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1296 }
1297 }
1298 }
1299
1300 if let Some(mouse_context_menu) = self.editor.read(cx).mouse_context_menu.as_ref() {
1301 let element = overlay()
1302 .position(mouse_context_menu.position)
1303 .child(mouse_context_menu.context_menu.clone())
1304 .anchor(AnchorCorner::TopLeft)
1305 .snap_to_window();
1306 element.into_any().draw(
1307 gpui::Point::default(),
1308 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1309 cx,
1310 );
1311 }
1312 }
1313
1314 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1315 bounds.upper_right().x - self.style.scrollbar_width
1316 }
1317
1318 fn paint_scrollbar(
1319 &mut self,
1320 bounds: Bounds<Pixels>,
1321 layout: &mut LayoutState,
1322 cx: &mut ElementContext,
1323 ) {
1324 if layout.mode != EditorMode::Full {
1325 return;
1326 }
1327
1328 // If a drag took place after we started dragging the scrollbar,
1329 // cancel the scrollbar drag.
1330 if cx.has_active_drag() {
1331 self.editor.update(cx, |editor, cx| {
1332 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1333 });
1334 }
1335
1336 let top = bounds.origin.y;
1337 let bottom = bounds.lower_left().y;
1338 let right = bounds.lower_right().x;
1339 let left = self.scrollbar_left(&bounds);
1340 let row_range = layout.scrollbar_row_range.clone();
1341 let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1342
1343 let mut height = bounds.size.height;
1344 let mut first_row_y_offset = px(0.0);
1345
1346 // Impose a minimum height on the scrollbar thumb
1347 let row_height = height / max_row;
1348 let min_thumb_height = layout.position_map.line_height;
1349 let thumb_height = (row_range.end - row_range.start) * row_height;
1350 if thumb_height < min_thumb_height {
1351 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1352 height -= min_thumb_height - thumb_height;
1353 }
1354
1355 let y_for_row = |row: f32| -> Pixels { top + first_row_y_offset + row * row_height };
1356
1357 let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1358 let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1359 let track_bounds = Bounds::from_corners(point(left, top), point(right, bottom));
1360 let thumb_bounds = Bounds::from_corners(point(left, thumb_top), point(right, thumb_bottom));
1361
1362 if layout.show_scrollbars {
1363 cx.paint_quad(quad(
1364 track_bounds,
1365 Corners::default(),
1366 cx.theme().colors().scrollbar_track_background,
1367 Edges {
1368 top: Pixels::ZERO,
1369 right: Pixels::ZERO,
1370 bottom: Pixels::ZERO,
1371 left: px(1.),
1372 },
1373 cx.theme().colors().scrollbar_track_border,
1374 ));
1375 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1376 if layout.is_singleton && scrollbar_settings.selections {
1377 let start_anchor = Anchor::min();
1378 let end_anchor = Anchor::max();
1379 let background_ranges = self
1380 .editor
1381 .read(cx)
1382 .background_highlight_row_ranges::<BufferSearchHighlights>(
1383 start_anchor..end_anchor,
1384 &layout.position_map.snapshot,
1385 50000,
1386 );
1387 for range in background_ranges {
1388 let start_y = y_for_row(range.start().row() as f32);
1389 let mut end_y = y_for_row(range.end().row() as f32);
1390 if end_y - start_y < px(1.) {
1391 end_y = start_y + px(1.);
1392 }
1393 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1394 cx.paint_quad(quad(
1395 bounds,
1396 Corners::default(),
1397 cx.theme().status().info,
1398 Edges {
1399 top: Pixels::ZERO,
1400 right: px(1.),
1401 bottom: Pixels::ZERO,
1402 left: px(1.),
1403 },
1404 cx.theme().colors().scrollbar_thumb_border,
1405 ));
1406 }
1407 }
1408
1409 if layout.is_singleton && scrollbar_settings.symbols_selections {
1410 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
1411 Anchor::min()..Anchor::max(),
1412 &layout.position_map.snapshot,
1413 cx.theme().colors(),
1414 );
1415 for hunk in selection_ranges {
1416 let start_display = Point::new(hunk.0.start.row(), 0)
1417 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1418 let end_display = Point::new(hunk.0.end.row(), 0)
1419 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1420 let start_y = y_for_row(start_display.row() as f32);
1421 let mut end_y = if hunk.0.start == hunk.0.end {
1422 y_for_row((end_display.row() + 1) as f32)
1423 } else {
1424 y_for_row((end_display.row()) as f32)
1425 };
1426
1427 if end_y - start_y < px(1.) {
1428 end_y = start_y + px(1.);
1429 }
1430 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1431
1432 cx.paint_quad(quad(
1433 bounds,
1434 Corners::default(),
1435 cx.theme().status().info,
1436 Edges {
1437 top: Pixels::ZERO,
1438 right: px(1.),
1439 bottom: Pixels::ZERO,
1440 left: px(1.),
1441 },
1442 cx.theme().colors().scrollbar_thumb_border,
1443 ));
1444 }
1445 }
1446
1447 if layout.is_singleton && scrollbar_settings.git_diff {
1448 for hunk in layout
1449 .position_map
1450 .snapshot
1451 .buffer_snapshot
1452 .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1453 {
1454 let start_display = Point::new(hunk.buffer_range.start, 0)
1455 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1456 let end_display = Point::new(hunk.buffer_range.end, 0)
1457 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1458 let start_y = y_for_row(start_display.row() as f32);
1459 let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1460 y_for_row((end_display.row() + 1) as f32)
1461 } else {
1462 y_for_row((end_display.row()) as f32)
1463 };
1464
1465 if end_y - start_y < px(1.) {
1466 end_y = start_y + px(1.);
1467 }
1468 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1469
1470 let color = match hunk.status() {
1471 DiffHunkStatus::Added => cx.theme().status().created,
1472 DiffHunkStatus::Modified => cx.theme().status().modified,
1473 DiffHunkStatus::Removed => cx.theme().status().deleted,
1474 };
1475 cx.paint_quad(quad(
1476 bounds,
1477 Corners::default(),
1478 color,
1479 Edges {
1480 top: Pixels::ZERO,
1481 right: px(1.),
1482 bottom: Pixels::ZERO,
1483 left: px(1.),
1484 },
1485 cx.theme().colors().scrollbar_thumb_border,
1486 ));
1487 }
1488 }
1489
1490 if layout.is_singleton && scrollbar_settings.diagnostics {
1491 let max_point = layout
1492 .position_map
1493 .snapshot
1494 .display_snapshot
1495 .buffer_snapshot
1496 .max_point();
1497
1498 let diagnostics = layout
1499 .position_map
1500 .snapshot
1501 .buffer_snapshot
1502 .diagnostics_in_range::<_, Point>(Point::zero()..max_point, false)
1503 // We want to sort by severity, in order to paint the most severe diagnostics last.
1504 .sorted_by_key(|diagnostic| std::cmp::Reverse(diagnostic.diagnostic.severity));
1505
1506 for diagnostic in diagnostics {
1507 let start_display = diagnostic
1508 .range
1509 .start
1510 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1511 let end_display = diagnostic
1512 .range
1513 .end
1514 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1515 let start_y = y_for_row(start_display.row() as f32);
1516 let mut end_y = if diagnostic.range.start == diagnostic.range.end {
1517 y_for_row((end_display.row() + 1) as f32)
1518 } else {
1519 y_for_row((end_display.row()) as f32)
1520 };
1521
1522 if end_y - start_y < px(1.) {
1523 end_y = start_y + px(1.);
1524 }
1525 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1526
1527 let color = match diagnostic.diagnostic.severity {
1528 DiagnosticSeverity::ERROR => cx.theme().status().error,
1529 DiagnosticSeverity::WARNING => cx.theme().status().warning,
1530 DiagnosticSeverity::INFORMATION => cx.theme().status().info,
1531 _ => cx.theme().status().hint,
1532 };
1533 cx.paint_quad(quad(
1534 bounds,
1535 Corners::default(),
1536 color,
1537 Edges {
1538 top: Pixels::ZERO,
1539 right: px(1.),
1540 bottom: Pixels::ZERO,
1541 left: px(1.),
1542 },
1543 cx.theme().colors().scrollbar_thumb_border,
1544 ));
1545 }
1546 }
1547
1548 cx.paint_quad(quad(
1549 thumb_bounds,
1550 Corners::default(),
1551 cx.theme().colors().scrollbar_thumb_background,
1552 Edges {
1553 top: Pixels::ZERO,
1554 right: px(1.),
1555 bottom: Pixels::ZERO,
1556 left: px(1.),
1557 },
1558 cx.theme().colors().scrollbar_thumb_border,
1559 ));
1560 }
1561
1562 let interactive_track_bounds = InteractiveBounds {
1563 bounds: track_bounds,
1564 stacking_order: cx.stacking_order().clone(),
1565 };
1566 let mut mouse_position = cx.mouse_position();
1567 if track_bounds.contains(&mouse_position) {
1568 cx.set_cursor_style(
1569 CursorStyle::Arrow,
1570 interactive_track_bounds.stacking_order.clone(),
1571 );
1572 }
1573
1574 cx.on_mouse_event({
1575 let editor = self.editor.clone();
1576 move |event: &MouseMoveEvent, phase, cx| {
1577 if phase == DispatchPhase::Capture {
1578 return;
1579 }
1580
1581 editor.update(cx, |editor, cx| {
1582 if event.pressed_button == Some(MouseButton::Left)
1583 && editor.scroll_manager.is_dragging_scrollbar()
1584 {
1585 let y = mouse_position.y;
1586 let new_y = event.position.y;
1587 if (track_bounds.top()..track_bounds.bottom()).contains(&y) {
1588 let mut position = editor.scroll_position(cx);
1589 position.y += (new_y - y) * max_row / height;
1590 if position.y < 0.0 {
1591 position.y = 0.0;
1592 }
1593 editor.set_scroll_position(position, cx);
1594 }
1595
1596 mouse_position = event.position;
1597 cx.stop_propagation();
1598 } else {
1599 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1600 if interactive_track_bounds.visibly_contains(&event.position, cx) {
1601 editor.scroll_manager.show_scrollbar(cx);
1602 }
1603 }
1604 })
1605 }
1606 });
1607
1608 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
1609 cx.on_mouse_event({
1610 let editor = self.editor.clone();
1611 move |_: &MouseUpEvent, phase, cx| {
1612 if phase == DispatchPhase::Capture {
1613 return;
1614 }
1615
1616 editor.update(cx, |editor, cx| {
1617 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1618 cx.stop_propagation();
1619 });
1620 }
1621 });
1622 } else {
1623 cx.on_mouse_event({
1624 let editor = self.editor.clone();
1625 move |event: &MouseDownEvent, phase, cx| {
1626 if phase == DispatchPhase::Capture {
1627 return;
1628 }
1629
1630 editor.update(cx, |editor, cx| {
1631 if track_bounds.contains(&event.position) {
1632 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
1633
1634 let y = event.position.y;
1635 if y < thumb_top || thumb_bottom < y {
1636 let center_row = ((y - top) * max_row / 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(),
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 #[allow(clippy::too_many_arguments)]
2996 fn draw_invisibles(
2997 &self,
2998 selection_ranges: &[Range<DisplayPoint>],
2999 layout: &LayoutState,
3000 content_origin: gpui::Point<Pixels>,
3001 line_y: Pixels,
3002 row: u32,
3003 line_height: Pixels,
3004 whitespace_setting: ShowWhitespaceSetting,
3005 cx: &mut ElementContext,
3006 ) {
3007 let allowed_invisibles_regions = match whitespace_setting {
3008 ShowWhitespaceSetting::None => return,
3009 ShowWhitespaceSetting::Selection => Some(selection_ranges),
3010 ShowWhitespaceSetting::All => None,
3011 };
3012
3013 for invisible in &self.invisibles {
3014 let (&token_offset, invisible_symbol) = match invisible {
3015 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
3016 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
3017 };
3018
3019 let x_offset = self.line.x_for_index(token_offset);
3020 let invisible_offset =
3021 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
3022 let origin = content_origin
3023 + gpui::point(
3024 x_offset + invisible_offset - layout.position_map.scroll_position.x,
3025 line_y,
3026 );
3027
3028 if let Some(allowed_regions) = allowed_invisibles_regions {
3029 let invisible_point = DisplayPoint::new(row, token_offset as u32);
3030 if !allowed_regions
3031 .iter()
3032 .any(|region| region.start <= invisible_point && invisible_point < region.end)
3033 {
3034 continue;
3035 }
3036 }
3037 invisible_symbol.paint(origin, line_height, cx).log_err();
3038 }
3039 }
3040}
3041
3042#[derive(Debug, Clone, Copy, PartialEq, Eq)]
3043enum Invisible {
3044 Tab { line_start_offset: usize },
3045 Whitespace { line_offset: usize },
3046}
3047
3048impl Element for EditorElement {
3049 type State = ();
3050
3051 fn request_layout(
3052 &mut self,
3053 _element_state: Option<Self::State>,
3054 cx: &mut gpui::ElementContext,
3055 ) -> (gpui::LayoutId, Self::State) {
3056 cx.with_view_id(self.editor.entity_id(), |cx| {
3057 self.editor.update(cx, |editor, cx| {
3058 editor.set_style(self.style.clone(), cx);
3059
3060 let layout_id = match editor.mode {
3061 EditorMode::SingleLine => {
3062 let rem_size = cx.rem_size();
3063 let mut style = Style::default();
3064 style.size.width = relative(1.).into();
3065 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
3066 cx.with_element_context(|cx| cx.request_layout(&style, None))
3067 }
3068 EditorMode::AutoHeight { max_lines } => {
3069 let editor_handle = cx.view().clone();
3070 let max_line_number_width =
3071 self.max_line_number_width(&editor.snapshot(cx), cx);
3072 cx.with_element_context(|cx| {
3073 cx.request_measured_layout(
3074 Style::default(),
3075 move |known_dimensions, _, cx| {
3076 editor_handle
3077 .update(cx, |editor, cx| {
3078 compute_auto_height_layout(
3079 editor,
3080 max_lines,
3081 max_line_number_width,
3082 known_dimensions,
3083 cx,
3084 )
3085 })
3086 .unwrap_or_default()
3087 },
3088 )
3089 })
3090 }
3091 EditorMode::Full => {
3092 let mut style = Style::default();
3093 style.size.width = relative(1.).into();
3094 style.size.height = relative(1.).into();
3095 cx.with_element_context(|cx| cx.request_layout(&style, None))
3096 }
3097 };
3098
3099 (layout_id, ())
3100 })
3101 })
3102 }
3103
3104 fn paint(
3105 &mut self,
3106 bounds: Bounds<gpui::Pixels>,
3107 _element_state: &mut Self::State,
3108 cx: &mut gpui::ElementContext,
3109 ) {
3110 let editor = self.editor.clone();
3111
3112 cx.paint_view(self.editor.entity_id(), |cx| {
3113 cx.with_text_style(
3114 Some(gpui::TextStyleRefinement {
3115 font_size: Some(self.style.text.font_size),
3116 line_height: Some(self.style.text.line_height),
3117 ..Default::default()
3118 }),
3119 |cx| {
3120 let mut layout = self.compute_layout(bounds, cx);
3121 let gutter_bounds = Bounds {
3122 origin: bounds.origin,
3123 size: layout.gutter_size,
3124 };
3125 let text_bounds = Bounds {
3126 origin: gutter_bounds.upper_right(),
3127 size: layout.text_size,
3128 };
3129
3130 let focus_handle = editor.focus_handle(cx);
3131 let key_context = self.editor.read(cx).key_context(cx);
3132 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
3133 self.register_actions(cx);
3134
3135 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3136 self.register_key_listeners(cx, text_bounds, &layout);
3137 cx.handle_input(
3138 &focus_handle,
3139 ElementInputHandler::new(bounds, self.editor.clone()),
3140 );
3141
3142 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
3143 if layout.gutter_size.width > Pixels::ZERO {
3144 self.paint_gutter(gutter_bounds, &mut layout, cx);
3145 }
3146 self.paint_text(text_bounds, &mut layout, cx);
3147
3148 cx.with_z_index(0, |cx| {
3149 self.paint_mouse_listeners(
3150 bounds,
3151 gutter_bounds,
3152 text_bounds,
3153 &layout,
3154 cx,
3155 );
3156 });
3157 if !layout.blocks.is_empty() {
3158 cx.with_z_index(0, |cx| {
3159 cx.with_element_id(Some("editor_blocks"), |cx| {
3160 self.paint_blocks(bounds, &mut layout, cx);
3161 });
3162 })
3163 }
3164
3165 cx.with_z_index(1, |cx| {
3166 self.paint_overlays(text_bounds, &mut layout, cx);
3167 });
3168
3169 cx.with_z_index(2, |cx| self.paint_scrollbar(bounds, &mut layout, cx));
3170 });
3171 })
3172 },
3173 )
3174 })
3175 }
3176}
3177
3178impl IntoElement for EditorElement {
3179 type Element = Self;
3180
3181 fn element_id(&self) -> Option<gpui::ElementId> {
3182 self.editor.element_id()
3183 }
3184
3185 fn into_element(self) -> Self::Element {
3186 self
3187 }
3188}
3189
3190type BufferRow = u32;
3191
3192pub struct LayoutState {
3193 position_map: Arc<PositionMap>,
3194 gutter_size: Size<Pixels>,
3195 gutter_dimensions: GutterDimensions,
3196 text_size: gpui::Size<Pixels>,
3197 mode: EditorMode,
3198 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3199 visible_anchor_range: Range<Anchor>,
3200 visible_display_row_range: Range<u32>,
3201 active_rows: BTreeMap<u32, bool>,
3202 highlighted_rows: Option<Range<u32>>,
3203 line_numbers: Vec<Option<ShapedLine>>,
3204 display_hunks: Vec<DisplayDiffHunk>,
3205 blocks: Vec<BlockLayout>,
3206 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3207 redacted_ranges: Vec<Range<DisplayPoint>>,
3208 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3209 scrollbar_row_range: Range<f32>,
3210 show_scrollbars: bool,
3211 is_singleton: bool,
3212 max_row: u32,
3213 context_menu: Option<(DisplayPoint, AnyElement)>,
3214 code_actions_indicator: Option<CodeActionsIndicator>,
3215 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3216 fold_indicators: Vec<Option<IconButton>>,
3217 tab_invisible: ShapedLine,
3218 space_invisible: ShapedLine,
3219}
3220
3221impl LayoutState {
3222 fn line_end_overshoot(&self) -> Pixels {
3223 0.15 * self.position_map.line_height
3224 }
3225}
3226
3227struct CodeActionsIndicator {
3228 row: u32,
3229 button: IconButton,
3230}
3231
3232struct PositionMap {
3233 size: Size<Pixels>,
3234 line_height: Pixels,
3235 scroll_position: gpui::Point<Pixels>,
3236 scroll_max: gpui::Point<f32>,
3237 em_width: Pixels,
3238 em_advance: Pixels,
3239 line_layouts: Vec<LineWithInvisibles>,
3240 snapshot: EditorSnapshot,
3241}
3242
3243#[derive(Debug, Copy, Clone)]
3244pub struct PointForPosition {
3245 pub previous_valid: DisplayPoint,
3246 pub next_valid: DisplayPoint,
3247 pub exact_unclipped: DisplayPoint,
3248 pub column_overshoot_after_line_end: u32,
3249}
3250
3251impl PointForPosition {
3252 pub fn as_valid(&self) -> Option<DisplayPoint> {
3253 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3254 Some(self.previous_valid)
3255 } else {
3256 None
3257 }
3258 }
3259}
3260
3261impl PositionMap {
3262 fn point_for_position(
3263 &self,
3264 text_bounds: Bounds<Pixels>,
3265 position: gpui::Point<Pixels>,
3266 ) -> PointForPosition {
3267 let scroll_position = self.snapshot.scroll_position();
3268 let position = position - text_bounds.origin;
3269 let y = position.y.max(px(0.)).min(self.size.height);
3270 let x = position.x + (scroll_position.x * self.em_width);
3271 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3272
3273 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3274 .line_layouts
3275 .get(row as usize - scroll_position.y as usize)
3276 .map(|&LineWithInvisibles { ref line, .. }| line)
3277 {
3278 if let Some(ix) = line.index_for_x(x) {
3279 (ix as u32, px(0.))
3280 } else {
3281 (line.len as u32, px(0.).max(x - line.width))
3282 }
3283 } else {
3284 (0, x)
3285 };
3286
3287 let mut exact_unclipped = DisplayPoint::new(row, column);
3288 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3289 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3290
3291 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3292 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3293 PointForPosition {
3294 previous_valid,
3295 next_valid,
3296 exact_unclipped,
3297 column_overshoot_after_line_end,
3298 }
3299 }
3300}
3301
3302struct BlockLayout {
3303 row: u32,
3304 element: AnyElement,
3305 available_space: Size<AvailableSpace>,
3306 style: BlockStyle,
3307}
3308
3309fn layout_line(
3310 row: u32,
3311 snapshot: &EditorSnapshot,
3312 style: &EditorStyle,
3313 cx: &WindowContext,
3314) -> Result<ShapedLine> {
3315 let mut line = snapshot.line(row);
3316
3317 if line.len() > MAX_LINE_LEN {
3318 let mut len = MAX_LINE_LEN;
3319 while !line.is_char_boundary(len) {
3320 len -= 1;
3321 }
3322
3323 line.truncate(len);
3324 }
3325
3326 cx.text_system().shape_line(
3327 line.into(),
3328 style.text.font_size.to_pixels(cx.rem_size()),
3329 &[TextRun {
3330 len: snapshot.line_len(row) as usize,
3331 font: style.text.font(),
3332 color: Hsla::default(),
3333 background_color: None,
3334 underline: None,
3335 strikethrough: None,
3336 }],
3337 )
3338}
3339
3340#[derive(Debug)]
3341pub struct Cursor {
3342 origin: gpui::Point<Pixels>,
3343 block_width: Pixels,
3344 line_height: Pixels,
3345 color: Hsla,
3346 shape: CursorShape,
3347 block_text: Option<ShapedLine>,
3348 cursor_name: Option<CursorName>,
3349}
3350
3351#[derive(Debug)]
3352pub struct CursorName {
3353 string: SharedString,
3354 color: Hsla,
3355 is_top_row: bool,
3356 z_index: u16,
3357}
3358
3359impl Cursor {
3360 pub fn new(
3361 origin: gpui::Point<Pixels>,
3362 block_width: Pixels,
3363 line_height: Pixels,
3364 color: Hsla,
3365 shape: CursorShape,
3366 block_text: Option<ShapedLine>,
3367 cursor_name: Option<CursorName>,
3368 ) -> Cursor {
3369 Cursor {
3370 origin,
3371 block_width,
3372 line_height,
3373 color,
3374 shape,
3375 block_text,
3376 cursor_name,
3377 }
3378 }
3379
3380 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3381 Bounds {
3382 origin: self.origin + origin,
3383 size: size(self.block_width, self.line_height),
3384 }
3385 }
3386
3387 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3388 let bounds = match self.shape {
3389 CursorShape::Bar => Bounds {
3390 origin: self.origin + origin,
3391 size: size(px(2.0), self.line_height),
3392 },
3393 CursorShape::Block | CursorShape::Hollow => Bounds {
3394 origin: self.origin + origin,
3395 size: size(self.block_width, self.line_height),
3396 },
3397 CursorShape::Underscore => Bounds {
3398 origin: self.origin
3399 + origin
3400 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3401 size: size(self.block_width, px(2.0)),
3402 },
3403 };
3404
3405 //Draw background or border quad
3406 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3407 outline(bounds, self.color)
3408 } else {
3409 fill(bounds, self.color)
3410 };
3411
3412 if let Some(name) = &self.cursor_name {
3413 let text_size = self.line_height / 1.5;
3414
3415 let name_origin = if name.is_top_row {
3416 point(bounds.right() - px(1.), bounds.top())
3417 } else {
3418 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3419 };
3420 cx.with_z_index(name.z_index, |cx| {
3421 div()
3422 .bg(self.color)
3423 .text_size(text_size)
3424 .px_0p5()
3425 .line_height(text_size + px(2.))
3426 .text_color(name.color)
3427 .child(name.string.clone())
3428 .into_any_element()
3429 .draw(
3430 name_origin,
3431 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3432 cx,
3433 )
3434 })
3435 }
3436
3437 cx.paint_quad(cursor);
3438
3439 if let Some(block_text) = &self.block_text {
3440 block_text
3441 .paint(self.origin + origin, self.line_height, cx)
3442 .log_err();
3443 }
3444 }
3445
3446 pub fn shape(&self) -> CursorShape {
3447 self.shape
3448 }
3449}
3450
3451#[derive(Debug)]
3452pub struct HighlightedRange {
3453 pub start_y: Pixels,
3454 pub line_height: Pixels,
3455 pub lines: Vec<HighlightedRangeLine>,
3456 pub color: Hsla,
3457 pub corner_radius: Pixels,
3458}
3459
3460#[derive(Debug)]
3461pub struct HighlightedRangeLine {
3462 pub start_x: Pixels,
3463 pub end_x: Pixels,
3464}
3465
3466impl HighlightedRange {
3467 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3468 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3469 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3470 self.paint_lines(
3471 self.start_y + self.line_height,
3472 &self.lines[1..],
3473 bounds,
3474 cx,
3475 );
3476 } else {
3477 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3478 }
3479 }
3480
3481 fn paint_lines(
3482 &self,
3483 start_y: Pixels,
3484 lines: &[HighlightedRangeLine],
3485 _bounds: Bounds<Pixels>,
3486 cx: &mut ElementContext,
3487 ) {
3488 if lines.is_empty() {
3489 return;
3490 }
3491
3492 let first_line = lines.first().unwrap();
3493 let last_line = lines.last().unwrap();
3494
3495 let first_top_left = point(first_line.start_x, start_y);
3496 let first_top_right = point(first_line.end_x, start_y);
3497
3498 let curve_height = point(Pixels::ZERO, self.corner_radius);
3499 let curve_width = |start_x: Pixels, end_x: Pixels| {
3500 let max = (end_x - start_x) / 2.;
3501 let width = if max < self.corner_radius {
3502 max
3503 } else {
3504 self.corner_radius
3505 };
3506
3507 point(width, Pixels::ZERO)
3508 };
3509
3510 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3511 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3512 path.curve_to(first_top_right + curve_height, first_top_right);
3513
3514 let mut iter = lines.iter().enumerate().peekable();
3515 while let Some((ix, line)) = iter.next() {
3516 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3517
3518 if let Some((_, next_line)) = iter.peek() {
3519 let next_top_right = point(next_line.end_x, bottom_right.y);
3520
3521 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3522 Ordering::Equal => {
3523 path.line_to(bottom_right);
3524 }
3525 Ordering::Less => {
3526 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3527 path.line_to(bottom_right - curve_height);
3528 if self.corner_radius > Pixels::ZERO {
3529 path.curve_to(bottom_right - curve_width, bottom_right);
3530 }
3531 path.line_to(next_top_right + curve_width);
3532 if self.corner_radius > Pixels::ZERO {
3533 path.curve_to(next_top_right + curve_height, next_top_right);
3534 }
3535 }
3536 Ordering::Greater => {
3537 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3538 path.line_to(bottom_right - curve_height);
3539 if self.corner_radius > Pixels::ZERO {
3540 path.curve_to(bottom_right + curve_width, bottom_right);
3541 }
3542 path.line_to(next_top_right - curve_width);
3543 if self.corner_radius > Pixels::ZERO {
3544 path.curve_to(next_top_right + curve_height, next_top_right);
3545 }
3546 }
3547 }
3548 } else {
3549 let curve_width = curve_width(line.start_x, line.end_x);
3550 path.line_to(bottom_right - curve_height);
3551 if self.corner_radius > Pixels::ZERO {
3552 path.curve_to(bottom_right - curve_width, bottom_right);
3553 }
3554
3555 let bottom_left = point(line.start_x, bottom_right.y);
3556 path.line_to(bottom_left + curve_width);
3557 if self.corner_radius > Pixels::ZERO {
3558 path.curve_to(bottom_left - curve_height, bottom_left);
3559 }
3560 }
3561 }
3562
3563 if first_line.start_x > last_line.start_x {
3564 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3565 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3566 path.line_to(second_top_left + curve_height);
3567 if self.corner_radius > Pixels::ZERO {
3568 path.curve_to(second_top_left + curve_width, second_top_left);
3569 }
3570 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3571 path.line_to(first_bottom_left - curve_width);
3572 if self.corner_radius > Pixels::ZERO {
3573 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3574 }
3575 }
3576
3577 path.line_to(first_top_left + curve_height);
3578 if self.corner_radius > Pixels::ZERO {
3579 path.curve_to(first_top_left + top_curve_width, first_top_left);
3580 }
3581 path.line_to(first_top_right - top_curve_width);
3582
3583 cx.paint_path(path, self.color);
3584 }
3585}
3586
3587pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3588 (delta.pow(1.5) / 100.0).into()
3589}
3590
3591fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3592 (delta.pow(1.2) / 300.0).into()
3593}
3594
3595#[cfg(test)]
3596mod tests {
3597 use super::*;
3598 use crate::{
3599 display_map::{BlockDisposition, BlockProperties},
3600 editor_tests::{init_test, update_test_language_settings},
3601 Editor, MultiBuffer,
3602 };
3603 use gpui::TestAppContext;
3604 use language::language_settings;
3605 use log::info;
3606 use std::{num::NonZeroU32, sync::Arc};
3607 use util::test::sample_text;
3608
3609 #[gpui::test]
3610 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3611 init_test(cx, |_| {});
3612 let window = cx.add_window(|cx| {
3613 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3614 Editor::new(EditorMode::Full, buffer, None, cx)
3615 });
3616
3617 let editor = window.root(cx).unwrap();
3618 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3619 let element = EditorElement::new(&editor, style);
3620
3621 let layouts = window
3622 .update(cx, |editor, cx| {
3623 let snapshot = editor.snapshot(cx);
3624 element
3625 .shape_line_numbers(
3626 0..6,
3627 &Default::default(),
3628 DisplayPoint::new(0, 0),
3629 false,
3630 &snapshot,
3631 cx,
3632 )
3633 .0
3634 })
3635 .unwrap();
3636 assert_eq!(layouts.len(), 6);
3637
3638 let relative_rows = window
3639 .update(cx, |editor, cx| {
3640 let snapshot = editor.snapshot(cx);
3641 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3642 })
3643 .unwrap();
3644 assert_eq!(relative_rows[&0], 3);
3645 assert_eq!(relative_rows[&1], 2);
3646 assert_eq!(relative_rows[&2], 1);
3647 // current line has no relative number
3648 assert_eq!(relative_rows[&4], 1);
3649 assert_eq!(relative_rows[&5], 2);
3650
3651 // works if cursor is before screen
3652 let relative_rows = window
3653 .update(cx, |editor, cx| {
3654 let snapshot = editor.snapshot(cx);
3655
3656 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3657 })
3658 .unwrap();
3659 assert_eq!(relative_rows.len(), 3);
3660 assert_eq!(relative_rows[&3], 2);
3661 assert_eq!(relative_rows[&4], 3);
3662 assert_eq!(relative_rows[&5], 4);
3663
3664 // works if cursor is after screen
3665 let relative_rows = window
3666 .update(cx, |editor, cx| {
3667 let snapshot = editor.snapshot(cx);
3668
3669 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3670 })
3671 .unwrap();
3672 assert_eq!(relative_rows.len(), 3);
3673 assert_eq!(relative_rows[&0], 5);
3674 assert_eq!(relative_rows[&1], 4);
3675 assert_eq!(relative_rows[&2], 3);
3676 }
3677
3678 #[gpui::test]
3679 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3680 init_test(cx, |_| {});
3681
3682 let window = cx.add_window(|cx| {
3683 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3684 Editor::new(EditorMode::Full, buffer, None, cx)
3685 });
3686 let editor = window.root(cx).unwrap();
3687 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3688 let mut element = EditorElement::new(&editor, style);
3689
3690 window
3691 .update(cx, |editor, cx| {
3692 editor.cursor_shape = CursorShape::Block;
3693 editor.change_selections(None, cx, |s| {
3694 s.select_ranges([
3695 Point::new(0, 0)..Point::new(1, 0),
3696 Point::new(3, 2)..Point::new(3, 3),
3697 Point::new(5, 6)..Point::new(6, 0),
3698 ]);
3699 });
3700 })
3701 .unwrap();
3702 let state = cx
3703 .update_window(window.into(), |view, cx| {
3704 cx.with_element_context(|cx| {
3705 cx.with_view_id(view.entity_id(), |cx| {
3706 element.compute_layout(
3707 Bounds {
3708 origin: point(px(500.), px(500.)),
3709 size: size(px(500.), px(500.)),
3710 },
3711 cx,
3712 )
3713 })
3714 })
3715 })
3716 .unwrap();
3717
3718 assert_eq!(state.selections.len(), 1);
3719 let local_selections = &state.selections[0].1;
3720 assert_eq!(local_selections.len(), 3);
3721 // moves cursor back one line
3722 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3723 assert_eq!(
3724 local_selections[0].range,
3725 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3726 );
3727
3728 // moves cursor back one column
3729 assert_eq!(
3730 local_selections[1].range,
3731 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3732 );
3733 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3734
3735 // leaves cursor on the max point
3736 assert_eq!(
3737 local_selections[2].range,
3738 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3739 );
3740 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3741
3742 // active lines does not include 1 (even though the range of the selection does)
3743 assert_eq!(
3744 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3745 vec![0, 3, 5, 6]
3746 );
3747
3748 // multi-buffer support
3749 // in DisplayPoint coordinates, this is what we're dealing with:
3750 // 0: [[file
3751 // 1: header]]
3752 // 2: aaaaaa
3753 // 3: bbbbbb
3754 // 4: cccccc
3755 // 5:
3756 // 6: ...
3757 // 7: ffffff
3758 // 8: gggggg
3759 // 9: hhhhhh
3760 // 10:
3761 // 11: [[file
3762 // 12: header]]
3763 // 13: bbbbbb
3764 // 14: cccccc
3765 // 15: dddddd
3766 let window = cx.add_window(|cx| {
3767 let buffer = MultiBuffer::build_multi(
3768 [
3769 (
3770 &(sample_text(8, 6, 'a') + "\n"),
3771 vec![
3772 Point::new(0, 0)..Point::new(3, 0),
3773 Point::new(4, 0)..Point::new(7, 0),
3774 ],
3775 ),
3776 (
3777 &(sample_text(8, 6, 'a') + "\n"),
3778 vec![Point::new(1, 0)..Point::new(3, 0)],
3779 ),
3780 ],
3781 cx,
3782 );
3783 Editor::new(EditorMode::Full, buffer, None, cx)
3784 });
3785 let editor = window.root(cx).unwrap();
3786 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3787 let mut element = EditorElement::new(&editor, style);
3788 let _state = window.update(cx, |editor, cx| {
3789 editor.cursor_shape = CursorShape::Block;
3790 editor.change_selections(None, cx, |s| {
3791 s.select_display_ranges([
3792 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3793 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3794 ]);
3795 });
3796 });
3797
3798 let state = cx
3799 .update_window(window.into(), |view, cx| {
3800 cx.with_element_context(|cx| {
3801 cx.with_view_id(view.entity_id(), |cx| {
3802 element.compute_layout(
3803 Bounds {
3804 origin: point(px(500.), px(500.)),
3805 size: size(px(500.), px(500.)),
3806 },
3807 cx,
3808 )
3809 })
3810 })
3811 })
3812 .unwrap();
3813 assert_eq!(state.selections.len(), 1);
3814 let local_selections = &state.selections[0].1;
3815 assert_eq!(local_selections.len(), 2);
3816
3817 // moves cursor on excerpt boundary back a line
3818 // and doesn't allow selection to bleed through
3819 assert_eq!(
3820 local_selections[0].range,
3821 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3822 );
3823 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3824 // moves cursor on buffer boundary back two lines
3825 // and doesn't allow selection to bleed through
3826 assert_eq!(
3827 local_selections[1].range,
3828 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3829 );
3830 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3831 }
3832
3833 #[gpui::test]
3834 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3835 init_test(cx, |_| {});
3836
3837 let window = cx.add_window(|cx| {
3838 let buffer = MultiBuffer::build_simple("", cx);
3839 Editor::new(EditorMode::Full, buffer, None, cx)
3840 });
3841 let editor = window.root(cx).unwrap();
3842 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3843 window
3844 .update(cx, |editor, cx| {
3845 editor.set_placeholder_text("hello", cx);
3846 editor.insert_blocks(
3847 [BlockProperties {
3848 style: BlockStyle::Fixed,
3849 disposition: BlockDisposition::Above,
3850 height: 3,
3851 position: Anchor::min(),
3852 render: Arc::new(|_| div().into_any()),
3853 }],
3854 None,
3855 cx,
3856 );
3857
3858 // Blur the editor so that it displays placeholder text.
3859 cx.blur();
3860 })
3861 .unwrap();
3862
3863 let mut element = EditorElement::new(&editor, style);
3864 let state = cx
3865 .update_window(window.into(), |view, cx| {
3866 cx.with_element_context(|cx| {
3867 cx.with_view_id(view.entity_id(), |cx| {
3868 element.compute_layout(
3869 Bounds {
3870 origin: point(px(500.), px(500.)),
3871 size: size(px(500.), px(500.)),
3872 },
3873 cx,
3874 )
3875 })
3876 })
3877 })
3878 .unwrap();
3879 let size = state.position_map.size;
3880
3881 assert_eq!(state.position_map.line_layouts.len(), 4);
3882 assert_eq!(
3883 state
3884 .line_numbers
3885 .iter()
3886 .map(Option::is_some)
3887 .collect::<Vec<_>>(),
3888 &[false, false, false, true]
3889 );
3890
3891 // Don't panic.
3892 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3893 cx.update_window(window.into(), |_, cx| {
3894 cx.with_element_context(|cx| element.paint(bounds, &mut (), cx))
3895 })
3896 .unwrap()
3897 }
3898
3899 #[gpui::test]
3900 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3901 const TAB_SIZE: u32 = 4;
3902
3903 let input_text = "\t \t|\t| a b";
3904 let expected_invisibles = vec![
3905 Invisible::Tab {
3906 line_start_offset: 0,
3907 },
3908 Invisible::Whitespace {
3909 line_offset: TAB_SIZE as usize,
3910 },
3911 Invisible::Tab {
3912 line_start_offset: TAB_SIZE as usize + 1,
3913 },
3914 Invisible::Tab {
3915 line_start_offset: TAB_SIZE as usize * 2 + 1,
3916 },
3917 Invisible::Whitespace {
3918 line_offset: TAB_SIZE as usize * 3 + 1,
3919 },
3920 Invisible::Whitespace {
3921 line_offset: TAB_SIZE as usize * 3 + 3,
3922 },
3923 ];
3924 assert_eq!(
3925 expected_invisibles.len(),
3926 input_text
3927 .chars()
3928 .filter(|initial_char| initial_char.is_whitespace())
3929 .count(),
3930 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3931 );
3932
3933 init_test(cx, |s| {
3934 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3935 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3936 });
3937
3938 let actual_invisibles =
3939 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3940
3941 assert_eq!(expected_invisibles, actual_invisibles);
3942 }
3943
3944 #[gpui::test]
3945 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3946 init_test(cx, |s| {
3947 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3948 s.defaults.tab_size = NonZeroU32::new(4);
3949 });
3950
3951 for editor_mode_without_invisibles in [
3952 EditorMode::SingleLine,
3953 EditorMode::AutoHeight { max_lines: 100 },
3954 ] {
3955 let invisibles = collect_invisibles_from_new_editor(
3956 cx,
3957 editor_mode_without_invisibles,
3958 "\t\t\t| | a b",
3959 px(500.0),
3960 );
3961 assert!(invisibles.is_empty(),
3962 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3963 }
3964 }
3965
3966 #[gpui::test]
3967 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3968 let tab_size = 4;
3969 let input_text = "a\tbcd ".repeat(9);
3970 let repeated_invisibles = [
3971 Invisible::Tab {
3972 line_start_offset: 1,
3973 },
3974 Invisible::Whitespace {
3975 line_offset: tab_size as usize + 3,
3976 },
3977 Invisible::Whitespace {
3978 line_offset: tab_size as usize + 4,
3979 },
3980 Invisible::Whitespace {
3981 line_offset: tab_size as usize + 5,
3982 },
3983 ];
3984 let expected_invisibles = std::iter::once(repeated_invisibles)
3985 .cycle()
3986 .take(9)
3987 .flatten()
3988 .collect::<Vec<_>>();
3989 assert_eq!(
3990 expected_invisibles.len(),
3991 input_text
3992 .chars()
3993 .filter(|initial_char| initial_char.is_whitespace())
3994 .count(),
3995 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3996 );
3997 info!("Expected invisibles: {expected_invisibles:?}");
3998
3999 init_test(cx, |_| {});
4000
4001 // Put the same string with repeating whitespace pattern into editors of various size,
4002 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4003 let resize_step = 10.0;
4004 let mut editor_width = 200.0;
4005 while editor_width <= 1000.0 {
4006 update_test_language_settings(cx, |s| {
4007 s.defaults.tab_size = NonZeroU32::new(tab_size);
4008 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4009 s.defaults.preferred_line_length = Some(editor_width as u32);
4010 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4011 });
4012
4013 let actual_invisibles = collect_invisibles_from_new_editor(
4014 cx,
4015 EditorMode::Full,
4016 &input_text,
4017 px(editor_width),
4018 );
4019
4020 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4021 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4022 let mut i = 0;
4023 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4024 i = actual_index;
4025 match expected_invisibles.get(i) {
4026 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4027 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4028 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4029 _ => {
4030 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4031 }
4032 },
4033 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4034 }
4035 }
4036 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4037 assert!(
4038 missing_expected_invisibles.is_empty(),
4039 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4040 );
4041
4042 editor_width += resize_step;
4043 }
4044 }
4045
4046 fn collect_invisibles_from_new_editor(
4047 cx: &mut TestAppContext,
4048 editor_mode: EditorMode,
4049 input_text: &str,
4050 editor_width: Pixels,
4051 ) -> Vec<Invisible> {
4052 info!(
4053 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4054 editor_width.0
4055 );
4056 let window = cx.add_window(|cx| {
4057 let buffer = MultiBuffer::build_simple(&input_text, cx);
4058 Editor::new(editor_mode, buffer, None, cx)
4059 });
4060 let editor = window.root(cx).unwrap();
4061 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4062 let mut element = EditorElement::new(&editor, style);
4063 window
4064 .update(cx, |editor, cx| {
4065 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4066 editor.set_wrap_width(Some(editor_width), cx);
4067 })
4068 .unwrap();
4069 let layout_state = cx
4070 .update_window(window.into(), |_, cx| {
4071 cx.with_element_context(|cx| {
4072 element.compute_layout(
4073 Bounds {
4074 origin: point(px(500.), px(500.)),
4075 size: size(px(500.), px(500.)),
4076 },
4077 cx,
4078 )
4079 })
4080 })
4081 .unwrap();
4082
4083 layout_state
4084 .position_map
4085 .line_layouts
4086 .iter()
4087 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
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}