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