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