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| {
1157 for cursor in cursors {
1158 cursor.paint(content_origin, cx);
1159 }
1160 });
1161 },
1162 )
1163 }
1164
1165 fn paint_overlays(
1166 &mut self,
1167 text_bounds: Bounds<Pixels>,
1168 layout: &mut LayoutState,
1169 cx: &mut ElementContext,
1170 ) {
1171 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
1172 let start_row = layout.visible_display_row_range.start;
1173 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1174 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1175 let context_menu_size = context_menu.measure(available_space, cx);
1176
1177 let cursor_row_layout =
1178 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1179 let x = cursor_row_layout.x_for_index(position.column() as usize)
1180 - layout.position_map.scroll_position.x;
1181 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1182 - layout.position_map.scroll_position.y;
1183 let mut list_origin = content_origin + point(x, y);
1184 let list_width = context_menu_size.width;
1185 let list_height = context_menu_size.height;
1186
1187 // Snap the right edge of the list to the right edge of the window if
1188 // its horizontal bounds overflow.
1189 if list_origin.x + list_width > cx.viewport_size().width {
1190 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1191 }
1192
1193 if list_origin.y + list_height > text_bounds.lower_right().y {
1194 list_origin.y -= layout.position_map.line_height + list_height;
1195 }
1196
1197 cx.break_content_mask(|cx| context_menu.draw(list_origin, available_space, cx));
1198 }
1199
1200 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1201 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1202
1203 // This is safe because we check on layout whether the required row is available
1204 let hovered_row_layout =
1205 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1206
1207 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1208 // height. This is the size we will use to decide whether to render popovers above or below
1209 // the hovered line.
1210 let first_size = hover_popovers[0].measure(available_space, cx);
1211 let height_to_reserve =
1212 first_size.height + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1213
1214 // Compute Hovered Point
1215 let x = hovered_row_layout.x_for_index(position.column() as usize)
1216 - layout.position_map.scroll_position.x;
1217 let y = position.row() as f32 * layout.position_map.line_height
1218 - layout.position_map.scroll_position.y;
1219 let hovered_point = content_origin + point(x, y);
1220
1221 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1222 // There is enough space above. Render popovers above the hovered point
1223 let mut current_y = hovered_point.y;
1224 for mut hover_popover in hover_popovers {
1225 let size = hover_popover.measure(available_space, cx);
1226 let mut popover_origin = point(hovered_point.x, current_y - size.height);
1227
1228 let x_out_of_bounds =
1229 text_bounds.upper_right().x - (popover_origin.x + size.width);
1230 if x_out_of_bounds < Pixels::ZERO {
1231 popover_origin.x = popover_origin.x + x_out_of_bounds;
1232 }
1233
1234 if cx.was_top_layer(&popover_origin, cx.stacking_order()) {
1235 cx.break_content_mask(|cx| {
1236 hover_popover.draw(popover_origin, available_space, cx)
1237 });
1238 }
1239
1240 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1241 }
1242 } else {
1243 // There is not enough space above. Render popovers below the hovered point
1244 let mut current_y = hovered_point.y + layout.position_map.line_height;
1245 for mut hover_popover in hover_popovers {
1246 let size = hover_popover.measure(available_space, cx);
1247 let mut popover_origin = point(hovered_point.x, current_y);
1248
1249 let x_out_of_bounds =
1250 text_bounds.upper_right().x - (popover_origin.x + size.width);
1251 if x_out_of_bounds < Pixels::ZERO {
1252 popover_origin.x = popover_origin.x + x_out_of_bounds;
1253 }
1254
1255 hover_popover.draw(popover_origin, available_space, cx);
1256
1257 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1258 }
1259 }
1260 }
1261
1262 if let Some(mouse_context_menu) = self.editor.read(cx).mouse_context_menu.as_ref() {
1263 let element = overlay()
1264 .position(mouse_context_menu.position)
1265 .child(mouse_context_menu.context_menu.clone())
1266 .anchor(AnchorCorner::TopLeft)
1267 .snap_to_window();
1268 element.into_any().draw(
1269 gpui::Point::default(),
1270 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1271 cx,
1272 );
1273 }
1274 }
1275
1276 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1277 bounds.upper_right().x - self.style.scrollbar_width
1278 }
1279
1280 fn paint_scrollbar(
1281 &mut self,
1282 bounds: Bounds<Pixels>,
1283 layout: &mut LayoutState,
1284 cx: &mut ElementContext,
1285 ) {
1286 if layout.mode != EditorMode::Full {
1287 return;
1288 }
1289
1290 // If a drag took place after we started dragging the scrollbar,
1291 // cancel the scrollbar drag.
1292 if cx.has_active_drag() {
1293 self.editor.update(cx, |editor, cx| {
1294 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1295 });
1296 }
1297
1298 let top = bounds.origin.y;
1299 let bottom = bounds.lower_left().y;
1300 let right = bounds.lower_right().x;
1301 let left = self.scrollbar_left(&bounds);
1302 let row_range = layout.scrollbar_row_range.clone();
1303 let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1304
1305 let mut height = bounds.size.height;
1306 let mut first_row_y_offset = px(0.0);
1307
1308 // Impose a minimum height on the scrollbar thumb
1309 let row_height = height / max_row;
1310 let min_thumb_height = layout.position_map.line_height;
1311 let thumb_height = (row_range.end - row_range.start) * row_height;
1312 if thumb_height < min_thumb_height {
1313 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1314 height -= min_thumb_height - thumb_height;
1315 }
1316
1317 let y_for_row = |row: f32| -> Pixels { top + first_row_y_offset + row * row_height };
1318
1319 let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1320 let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1321 let track_bounds = Bounds::from_corners(point(left, top), point(right, bottom));
1322 let thumb_bounds = Bounds::from_corners(point(left, thumb_top), point(right, thumb_bottom));
1323
1324 if layout.show_scrollbars {
1325 cx.paint_quad(quad(
1326 track_bounds,
1327 Corners::default(),
1328 cx.theme().colors().scrollbar_track_background,
1329 Edges {
1330 top: Pixels::ZERO,
1331 right: Pixels::ZERO,
1332 bottom: Pixels::ZERO,
1333 left: px(1.),
1334 },
1335 cx.theme().colors().scrollbar_track_border,
1336 ));
1337 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1338 if layout.is_singleton && scrollbar_settings.selections {
1339 let start_anchor = Anchor::min();
1340 let end_anchor = Anchor::max();
1341 let background_ranges = self
1342 .editor
1343 .read(cx)
1344 .background_highlight_row_ranges::<BufferSearchHighlights>(
1345 start_anchor..end_anchor,
1346 &layout.position_map.snapshot,
1347 50000,
1348 );
1349 for range in background_ranges {
1350 let start_y = y_for_row(range.start().row() as f32);
1351 let mut end_y = y_for_row(range.end().row() as f32);
1352 if end_y - start_y < px(1.) {
1353 end_y = start_y + px(1.);
1354 }
1355 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1356 cx.paint_quad(quad(
1357 bounds,
1358 Corners::default(),
1359 cx.theme().status().info,
1360 Edges {
1361 top: Pixels::ZERO,
1362 right: px(1.),
1363 bottom: Pixels::ZERO,
1364 left: px(1.),
1365 },
1366 cx.theme().colors().scrollbar_thumb_border,
1367 ));
1368 }
1369 }
1370
1371 if layout.is_singleton && scrollbar_settings.symbols_selections {
1372 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
1373 Anchor::min()..Anchor::max(),
1374 &layout.position_map.snapshot,
1375 cx.theme().colors(),
1376 );
1377 for hunk in selection_ranges {
1378 let start_display = Point::new(hunk.0.start.row(), 0)
1379 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1380 let end_display = Point::new(hunk.0.end.row(), 0)
1381 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1382 let start_y = y_for_row(start_display.row() as f32);
1383 let mut end_y = if hunk.0.start == hunk.0.end {
1384 y_for_row((end_display.row() + 1) as f32)
1385 } else {
1386 y_for_row((end_display.row()) as f32)
1387 };
1388
1389 if end_y - start_y < px(1.) {
1390 end_y = start_y + px(1.);
1391 }
1392 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1393
1394 cx.paint_quad(quad(
1395 bounds,
1396 Corners::default(),
1397 cx.theme().status().info,
1398 Edges {
1399 top: Pixels::ZERO,
1400 right: px(1.),
1401 bottom: Pixels::ZERO,
1402 left: px(1.),
1403 },
1404 cx.theme().colors().scrollbar_thumb_border,
1405 ));
1406 }
1407 }
1408
1409 if layout.is_singleton && scrollbar_settings.git_diff {
1410 for hunk in layout
1411 .position_map
1412 .snapshot
1413 .buffer_snapshot
1414 .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1415 {
1416 let start_display = Point::new(hunk.buffer_range.start, 0)
1417 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1418 let end_display = Point::new(hunk.buffer_range.end, 0)
1419 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1420 let start_y = y_for_row(start_display.row() as f32);
1421 let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1422 y_for_row((end_display.row() + 1) as f32)
1423 } else {
1424 y_for_row((end_display.row()) as f32)
1425 };
1426
1427 if end_y - start_y < px(1.) {
1428 end_y = start_y + px(1.);
1429 }
1430 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1431
1432 let color = match hunk.status() {
1433 DiffHunkStatus::Added => cx.theme().status().created,
1434 DiffHunkStatus::Modified => cx.theme().status().modified,
1435 DiffHunkStatus::Removed => cx.theme().status().deleted,
1436 };
1437 cx.paint_quad(quad(
1438 bounds,
1439 Corners::default(),
1440 color,
1441 Edges {
1442 top: Pixels::ZERO,
1443 right: px(1.),
1444 bottom: Pixels::ZERO,
1445 left: px(1.),
1446 },
1447 cx.theme().colors().scrollbar_thumb_border,
1448 ));
1449 }
1450 }
1451
1452 cx.paint_quad(quad(
1453 thumb_bounds,
1454 Corners::default(),
1455 cx.theme().colors().scrollbar_thumb_background,
1456 Edges {
1457 top: Pixels::ZERO,
1458 right: px(1.),
1459 bottom: Pixels::ZERO,
1460 left: px(1.),
1461 },
1462 cx.theme().colors().scrollbar_thumb_border,
1463 ));
1464 }
1465
1466 let interactive_track_bounds = InteractiveBounds {
1467 bounds: track_bounds,
1468 stacking_order: cx.stacking_order().clone(),
1469 };
1470 let mut mouse_position = cx.mouse_position();
1471 if interactive_track_bounds.visibly_contains(&mouse_position, cx) {
1472 cx.set_cursor_style(CursorStyle::Arrow);
1473 }
1474
1475 cx.on_mouse_event({
1476 let editor = self.editor.clone();
1477 move |event: &MouseMoveEvent, phase, cx| {
1478 if phase == DispatchPhase::Capture {
1479 return;
1480 }
1481
1482 editor.update(cx, |editor, cx| {
1483 if event.pressed_button == Some(MouseButton::Left)
1484 && editor.scroll_manager.is_dragging_scrollbar()
1485 {
1486 let y = mouse_position.y;
1487 let new_y = event.position.y;
1488 if (track_bounds.top()..track_bounds.bottom()).contains(&y) {
1489 let mut position = editor.scroll_position(cx);
1490 position.y += (new_y - y) * (max_row as f32) / height;
1491 if position.y < 0.0 {
1492 position.y = 0.0;
1493 }
1494 editor.set_scroll_position(position, cx);
1495 }
1496
1497 mouse_position = event.position;
1498 cx.stop_propagation();
1499 } else {
1500 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1501 if interactive_track_bounds.visibly_contains(&event.position, cx) {
1502 editor.scroll_manager.show_scrollbar(cx);
1503 }
1504 }
1505 })
1506 }
1507 });
1508
1509 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
1510 cx.on_mouse_event({
1511 let editor = self.editor.clone();
1512 move |_: &MouseUpEvent, phase, cx| {
1513 if phase == DispatchPhase::Capture {
1514 return;
1515 }
1516
1517 editor.update(cx, |editor, cx| {
1518 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1519 cx.stop_propagation();
1520 });
1521 }
1522 });
1523 } else {
1524 cx.on_mouse_event({
1525 let editor = self.editor.clone();
1526 move |event: &MouseDownEvent, phase, cx| {
1527 if phase == DispatchPhase::Capture {
1528 return;
1529 }
1530
1531 editor.update(cx, |editor, cx| {
1532 if track_bounds.contains(&event.position) {
1533 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
1534
1535 let y = event.position.y;
1536 if y < thumb_top || thumb_bottom < y {
1537 let center_row =
1538 ((y - top) * max_row as f32 / height).round() as u32;
1539 let top_row = center_row
1540 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1541 let mut position = editor.scroll_position(cx);
1542 position.y = top_row as f32;
1543 editor.set_scroll_position(position, cx);
1544 } else {
1545 editor.scroll_manager.show_scrollbar(cx);
1546 }
1547
1548 cx.stop_propagation();
1549 }
1550 });
1551 }
1552 });
1553 }
1554 }
1555
1556 #[allow(clippy::too_many_arguments)]
1557 fn paint_highlighted_range(
1558 &self,
1559 range: Range<DisplayPoint>,
1560 color: Hsla,
1561 corner_radius: Pixels,
1562 line_end_overshoot: Pixels,
1563 layout: &LayoutState,
1564 content_origin: gpui::Point<Pixels>,
1565 bounds: Bounds<Pixels>,
1566 cx: &mut ElementContext,
1567 ) {
1568 let start_row = layout.visible_display_row_range.start;
1569 let end_row = layout.visible_display_row_range.end;
1570 if range.start != range.end {
1571 let row_range = if range.end.column() == 0 {
1572 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1573 } else {
1574 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1575 };
1576
1577 let highlighted_range = HighlightedRange {
1578 color,
1579 line_height: layout.position_map.line_height,
1580 corner_radius,
1581 start_y: content_origin.y
1582 + row_range.start as f32 * layout.position_map.line_height
1583 - layout.position_map.scroll_position.y,
1584 lines: row_range
1585 .into_iter()
1586 .map(|row| {
1587 let line_layout =
1588 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1589 HighlightedRangeLine {
1590 start_x: if row == range.start.row() {
1591 content_origin.x
1592 + line_layout.x_for_index(range.start.column() as usize)
1593 - layout.position_map.scroll_position.x
1594 } else {
1595 content_origin.x - layout.position_map.scroll_position.x
1596 },
1597 end_x: if row == range.end.row() {
1598 content_origin.x
1599 + line_layout.x_for_index(range.end.column() as usize)
1600 - layout.position_map.scroll_position.x
1601 } else {
1602 content_origin.x + line_layout.width + line_end_overshoot
1603 - layout.position_map.scroll_position.x
1604 },
1605 }
1606 })
1607 .collect(),
1608 };
1609
1610 highlighted_range.paint(bounds, cx);
1611 }
1612 }
1613
1614 fn paint_blocks(
1615 &mut self,
1616 bounds: Bounds<Pixels>,
1617 layout: &mut LayoutState,
1618 cx: &mut ElementContext,
1619 ) {
1620 let scroll_position = layout.position_map.snapshot.scroll_position();
1621 let scroll_left = scroll_position.x * layout.position_map.em_width;
1622 let scroll_top = scroll_position.y * layout.position_map.line_height;
1623
1624 for mut block in layout.blocks.drain(..) {
1625 let mut origin = bounds.origin
1626 + point(
1627 Pixels::ZERO,
1628 block.row as f32 * layout.position_map.line_height - scroll_top,
1629 );
1630 if !matches!(block.style, BlockStyle::Sticky) {
1631 origin += point(-scroll_left, Pixels::ZERO);
1632 }
1633 block.element.draw(origin, block.available_space, cx);
1634 }
1635 }
1636
1637 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1638 let style = &self.style;
1639 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1640 let layout = cx
1641 .text_system()
1642 .shape_line(
1643 SharedString::from(" ".repeat(column)),
1644 font_size,
1645 &[TextRun {
1646 len: column,
1647 font: style.text.font(),
1648 color: Hsla::default(),
1649 background_color: None,
1650 underline: None,
1651 }],
1652 )
1653 .unwrap();
1654
1655 layout.width
1656 }
1657
1658 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1659 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1660 self.column_pixels(digit_count, cx)
1661 }
1662
1663 //Folds contained in a hunk are ignored apart from shrinking visual size
1664 //If a fold contains any hunks then that fold line is marked as modified
1665 fn layout_git_gutters(
1666 &self,
1667 display_rows: Range<u32>,
1668 snapshot: &EditorSnapshot,
1669 ) -> Vec<DisplayDiffHunk> {
1670 let buffer_snapshot = &snapshot.buffer_snapshot;
1671
1672 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1673 .to_point(snapshot)
1674 .row;
1675 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1676 .to_point(snapshot)
1677 .row;
1678
1679 buffer_snapshot
1680 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1681 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1682 .dedup()
1683 .collect()
1684 }
1685
1686 fn calculate_relative_line_numbers(
1687 &self,
1688 snapshot: &EditorSnapshot,
1689 rows: &Range<u32>,
1690 relative_to: Option<u32>,
1691 ) -> HashMap<u32, u32> {
1692 let mut relative_rows: HashMap<u32, u32> = Default::default();
1693 let Some(relative_to) = relative_to else {
1694 return relative_rows;
1695 };
1696
1697 let start = rows.start.min(relative_to);
1698 let end = rows.end.max(relative_to);
1699
1700 let buffer_rows = snapshot
1701 .buffer_rows(start)
1702 .take(1 + (end - start) as usize)
1703 .collect::<Vec<_>>();
1704
1705 let head_idx = relative_to - start;
1706 let mut delta = 1;
1707 let mut i = head_idx + 1;
1708 while i < buffer_rows.len() as u32 {
1709 if buffer_rows[i as usize].is_some() {
1710 if rows.contains(&(i + start)) {
1711 relative_rows.insert(i + start, delta);
1712 }
1713 delta += 1;
1714 }
1715 i += 1;
1716 }
1717 delta = 1;
1718 i = head_idx.min(buffer_rows.len() as u32 - 1);
1719 while i > 0 && buffer_rows[i as usize].is_none() {
1720 i -= 1;
1721 }
1722
1723 while i > 0 {
1724 i -= 1;
1725 if buffer_rows[i as usize].is_some() {
1726 if rows.contains(&(i + start)) {
1727 relative_rows.insert(i + start, delta);
1728 }
1729 delta += 1;
1730 }
1731 }
1732
1733 relative_rows
1734 }
1735
1736 fn shape_line_numbers(
1737 &self,
1738 rows: Range<u32>,
1739 active_rows: &BTreeMap<u32, bool>,
1740 newest_selection_head: DisplayPoint,
1741 is_singleton: bool,
1742 snapshot: &EditorSnapshot,
1743 cx: &ViewContext<Editor>,
1744 ) -> (
1745 Vec<Option<ShapedLine>>,
1746 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1747 ) {
1748 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1749 let include_line_numbers = snapshot.mode == EditorMode::Full;
1750 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1751 let mut fold_statuses = Vec::with_capacity(rows.len());
1752 let mut line_number = String::new();
1753 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1754 let relative_to = if is_relative {
1755 Some(newest_selection_head.row())
1756 } else {
1757 None
1758 };
1759
1760 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1761
1762 for (ix, row) in snapshot
1763 .buffer_rows(rows.start)
1764 .take((rows.end - rows.start) as usize)
1765 .enumerate()
1766 {
1767 let display_row = rows.start + ix as u32;
1768 let (active, color) = if active_rows.contains_key(&display_row) {
1769 (true, cx.theme().colors().editor_active_line_number)
1770 } else {
1771 (false, cx.theme().colors().editor_line_number)
1772 };
1773 if let Some(buffer_row) = row {
1774 if include_line_numbers {
1775 line_number.clear();
1776 let default_number = buffer_row + 1;
1777 let number = relative_rows
1778 .get(&(ix as u32 + rows.start))
1779 .unwrap_or(&default_number);
1780 write!(&mut line_number, "{}", number).unwrap();
1781 let run = TextRun {
1782 len: line_number.len(),
1783 font: self.style.text.font(),
1784 color,
1785 background_color: None,
1786 underline: None,
1787 };
1788 let shaped_line = cx
1789 .text_system()
1790 .shape_line(line_number.clone().into(), font_size, &[run])
1791 .unwrap();
1792 shaped_line_numbers.push(Some(shaped_line));
1793 fold_statuses.push(
1794 is_singleton
1795 .then(|| {
1796 snapshot
1797 .fold_for_line(buffer_row)
1798 .map(|fold_status| (fold_status, buffer_row, active))
1799 })
1800 .flatten(),
1801 )
1802 }
1803 } else {
1804 fold_statuses.push(None);
1805 shaped_line_numbers.push(None);
1806 }
1807 }
1808
1809 (shaped_line_numbers, fold_statuses)
1810 }
1811
1812 fn layout_lines(
1813 &self,
1814 rows: Range<u32>,
1815 line_number_layouts: &[Option<ShapedLine>],
1816 snapshot: &EditorSnapshot,
1817 cx: &ViewContext<Editor>,
1818 ) -> Vec<LineWithInvisibles> {
1819 if rows.start >= rows.end {
1820 return Vec::new();
1821 }
1822
1823 // Show the placeholder when the editor is empty
1824 if snapshot.is_empty() {
1825 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1826 let placeholder_color = cx.theme().colors().text_placeholder;
1827 let placeholder_text = snapshot.placeholder_text();
1828
1829 let placeholder_lines = placeholder_text
1830 .as_ref()
1831 .map_or("", AsRef::as_ref)
1832 .split('\n')
1833 .skip(rows.start as usize)
1834 .chain(iter::repeat(""))
1835 .take(rows.len());
1836 placeholder_lines
1837 .filter_map(move |line| {
1838 let run = TextRun {
1839 len: line.len(),
1840 font: self.style.text.font(),
1841 color: placeholder_color,
1842 background_color: None,
1843 underline: Default::default(),
1844 };
1845 cx.text_system()
1846 .shape_line(line.to_string().into(), font_size, &[run])
1847 .log_err()
1848 })
1849 .map(|line| LineWithInvisibles {
1850 line,
1851 invisibles: Vec::new(),
1852 })
1853 .collect()
1854 } else {
1855 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1856 LineWithInvisibles::from_chunks(
1857 chunks,
1858 &self.style.text,
1859 MAX_LINE_LEN,
1860 rows.len() as usize,
1861 line_number_layouts,
1862 snapshot.mode,
1863 cx,
1864 )
1865 }
1866 }
1867
1868 fn compute_layout(&mut self, bounds: Bounds<Pixels>, cx: &mut ElementContext) -> LayoutState {
1869 self.editor.update(cx, |editor, cx| {
1870 let snapshot = editor.snapshot(cx);
1871 let style = self.style.clone();
1872
1873 let font_id = cx.text_system().resolve_font(&style.text.font());
1874 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1875 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1876 let em_width = cx
1877 .text_system()
1878 .typographic_bounds(font_id, font_size, 'm')
1879 .unwrap()
1880 .size
1881 .width;
1882 let em_advance = cx
1883 .text_system()
1884 .advance(font_id, font_size, 'm')
1885 .unwrap()
1886 .width;
1887
1888 let gutter_dimensions = snapshot.gutter_dimensions(font_id, font_size, em_width, self.max_line_number_width(&snapshot, cx), cx);
1889
1890 editor.gutter_width = gutter_dimensions.width;
1891
1892 let text_width = bounds.size.width - gutter_dimensions.width;
1893 let overscroll = size(em_width, px(0.));
1894 let _snapshot = {
1895 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1896
1897 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
1898 let wrap_width = match editor.soft_wrap_mode(cx) {
1899 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1900 SoftWrap::EditorWidth => editor_width,
1901 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1902 };
1903
1904 if editor.set_wrap_width(Some(wrap_width), cx) {
1905 editor.snapshot(cx)
1906 } else {
1907 snapshot
1908 }
1909 };
1910
1911 let wrap_guides = editor
1912 .wrap_guides(cx)
1913 .iter()
1914 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1915 .collect::<SmallVec<[_; 2]>>();
1916
1917 let gutter_size = size(gutter_dimensions.width, bounds.size.height);
1918 let text_size = size(text_width, bounds.size.height);
1919
1920 let autoscroll_horizontally =
1921 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1922 let mut snapshot = editor.snapshot(cx);
1923
1924 let scroll_position = snapshot.scroll_position();
1925 // The scroll position is a fractional point, the whole number of which represents
1926 // the top of the window in terms of display rows.
1927 let start_row = scroll_position.y as u32;
1928 let height_in_lines = f32::from(bounds.size.height / line_height);
1929 let max_row = snapshot.max_point().row();
1930
1931 // Add 1 to ensure selections bleed off screen
1932 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1933
1934 let start_anchor = if start_row == 0 {
1935 Anchor::min()
1936 } else {
1937 snapshot
1938 .buffer_snapshot
1939 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1940 };
1941 let end_anchor = if end_row > max_row {
1942 Anchor::max()
1943 } else {
1944 snapshot
1945 .buffer_snapshot
1946 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1947 };
1948
1949 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1950 let mut active_rows = BTreeMap::new();
1951 let is_singleton = editor.is_singleton(cx);
1952
1953 let highlighted_rows = editor.highlighted_rows();
1954 let highlighted_ranges = editor.background_highlights_in_range(
1955 start_anchor..end_anchor,
1956 &snapshot.display_snapshot,
1957 cx.theme().colors(),
1958 );
1959
1960 let mut newest_selection_head = None;
1961
1962 if editor.show_local_selections {
1963 let mut local_selections: Vec<Selection<Point>> = editor
1964 .selections
1965 .disjoint_in_range(start_anchor..end_anchor, cx);
1966 local_selections.extend(editor.selections.pending(cx));
1967 let mut layouts = Vec::new();
1968 let newest = editor.selections.newest(cx);
1969 for selection in local_selections.drain(..) {
1970 let is_empty = selection.start == selection.end;
1971 let is_newest = selection == newest;
1972
1973 let layout = SelectionLayout::new(
1974 selection,
1975 editor.selections.line_mode,
1976 editor.cursor_shape,
1977 &snapshot.display_snapshot,
1978 is_newest,
1979 true,
1980 None,
1981 );
1982 if is_newest {
1983 newest_selection_head = Some(layout.head);
1984 }
1985
1986 for row in cmp::max(layout.active_rows.start, start_row)
1987 ..=cmp::min(layout.active_rows.end, end_row)
1988 {
1989 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1990 *contains_non_empty_selection |= !is_empty;
1991 }
1992 layouts.push(layout);
1993 }
1994
1995 let player = if editor.read_only(cx) {
1996 cx.theme().players().read_only()
1997 } else {
1998 style.local_player
1999 };
2000
2001 selections.push((player, layouts));
2002 }
2003
2004 if let Some(collaboration_hub) = &editor.collaboration_hub {
2005 // When following someone, render the local selections in their color.
2006 if let Some(leader_id) = editor.leader_peer_id {
2007 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2008 if let Some(participant_index) = collaboration_hub
2009 .user_participant_indices(cx)
2010 .get(&collaborator.user_id)
2011 {
2012 if let Some((local_selection_style, _)) = selections.first_mut() {
2013 *local_selection_style = cx
2014 .theme()
2015 .players()
2016 .color_for_participant(participant_index.0);
2017 }
2018 }
2019 }
2020 }
2021
2022 let mut remote_selections = HashMap::default();
2023 for selection in snapshot.remote_selections_in_range(
2024 &(start_anchor..end_anchor),
2025 collaboration_hub.as_ref(),
2026 cx,
2027 ) {
2028 let selection_style = if let Some(participant_index) = selection.participant_index {
2029 cx.theme()
2030 .players()
2031 .color_for_participant(participant_index.0)
2032 } else {
2033 cx.theme().players().absent()
2034 };
2035
2036 // Don't re-render the leader's selections, since the local selections
2037 // match theirs.
2038 if Some(selection.peer_id) == editor.leader_peer_id {
2039 continue;
2040 }
2041 let key = HoveredCursor{replica_id: selection.replica_id, selection_id: selection.selection.id};
2042
2043 let is_shown = editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
2044
2045 remote_selections
2046 .entry(selection.replica_id)
2047 .or_insert((selection_style, Vec::new()))
2048 .1
2049 .push(SelectionLayout::new(
2050 selection.selection,
2051 selection.line_mode,
2052 selection.cursor_shape,
2053 &snapshot.display_snapshot,
2054 false,
2055 false,
2056 if is_shown {
2057 selection.user_name
2058 } else {
2059 None
2060 },
2061 ));
2062 }
2063
2064 selections.extend(remote_selections.into_values());
2065 }
2066
2067 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2068 let show_scrollbars = match scrollbar_settings.show {
2069 ShowScrollbar::Auto => {
2070 // Git
2071 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2072 ||
2073 // Selections
2074 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
2075 ||
2076 // Symbols Selections
2077 (is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
2078 ||
2079 // Scrollmanager
2080 editor.scroll_manager.scrollbars_visible()
2081 }
2082 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2083 ShowScrollbar::Always => true,
2084 ShowScrollbar::Never => false,
2085 };
2086
2087 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2088 let newest = editor.selections.newest::<Point>(cx);
2089 SelectionLayout::new(
2090 newest,
2091 editor.selections.line_mode,
2092 editor.cursor_shape,
2093 &snapshot.display_snapshot,
2094 true,
2095 true,
2096 None,
2097 )
2098 .head
2099 });
2100
2101 let (line_numbers, fold_statuses) = self.shape_line_numbers(
2102 start_row..end_row,
2103 &active_rows,
2104 head_for_relative,
2105 is_singleton,
2106 &snapshot,
2107 cx,
2108 );
2109
2110 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2111
2112 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2113
2114 let mut max_visible_line_width = Pixels::ZERO;
2115 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
2116 for line_with_invisibles in &line_layouts {
2117 if line_with_invisibles.line.width > max_visible_line_width {
2118 max_visible_line_width = line_with_invisibles.line.width;
2119 }
2120 }
2121
2122 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
2123 .unwrap()
2124 .width;
2125 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
2126
2127 let editor_view = cx.view().clone();
2128 let (scroll_width, blocks) = cx.with_element_context(|cx| {
2129 cx.with_element_id(Some("editor_blocks"), |cx| {
2130 self.layout_blocks(
2131 start_row..end_row,
2132 &snapshot,
2133 bounds.size.width,
2134 scroll_width,
2135 text_width,
2136 gutter_dimensions.padding,
2137 gutter_dimensions.width,
2138 em_width,
2139 gutter_dimensions.width + gutter_dimensions.margin,
2140 line_height,
2141 &style,
2142 &line_layouts,
2143 editor,
2144 editor_view,
2145 cx,
2146 )
2147 })
2148 });
2149
2150 let scroll_max = point(
2151 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
2152 max_row as f32,
2153 );
2154
2155 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2156
2157 let autoscrolled = if autoscroll_horizontally {
2158 editor.autoscroll_horizontally(
2159 start_row,
2160 text_size.width,
2161 scroll_width,
2162 em_width,
2163 &line_layouts,
2164 cx,
2165 )
2166 } else {
2167 false
2168 };
2169
2170 if clamped || autoscrolled {
2171 snapshot = editor.snapshot(cx);
2172 }
2173
2174 let mut context_menu = None;
2175 let mut code_actions_indicator = None;
2176 if let Some(newest_selection_head) = newest_selection_head {
2177 if (start_row..end_row).contains(&newest_selection_head.row()) {
2178 if editor.context_menu_visible() {
2179 let max_height = cmp::min(
2180 12. * line_height,
2181 cmp::max(
2182 3. * line_height,
2183 (bounds.size.height - line_height) / 2.,
2184 )
2185 );
2186 context_menu =
2187 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2188 }
2189
2190 let active = matches!(
2191 editor.context_menu.read().as_ref(),
2192 Some(crate::ContextMenu::CodeActions(_))
2193 );
2194
2195 code_actions_indicator = editor
2196 .render_code_actions_indicator(&style, active, cx)
2197 .map(|element| CodeActionsIndicator {
2198 row: newest_selection_head.row(),
2199 button: element,
2200 });
2201 }
2202 }
2203
2204 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2205 let max_size = size(
2206 (120. * em_width) // Default size
2207 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2208 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2209 (16. * line_height) // Default size
2210 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2211 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2212 );
2213
2214 let hover = if context_menu.is_some() {
2215 None
2216 } else {
2217 editor.hover_state.render(
2218 &snapshot,
2219 &style,
2220 visible_rows,
2221 max_size,
2222 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2223 cx,
2224 )
2225 };
2226
2227 let editor_view = cx.view().clone();
2228 let fold_indicators = cx.with_element_context(|cx| {
2229
2230 cx.with_element_id(Some("gutter_fold_indicators"), |_cx| {
2231 editor.render_fold_indicators(
2232 fold_statuses,
2233 &style,
2234 editor.gutter_hovered,
2235 line_height,
2236 gutter_dimensions.margin,
2237 editor_view,
2238 )
2239 })
2240 });
2241
2242 let invisible_symbol_font_size = font_size / 2.;
2243 let tab_invisible = cx
2244 .text_system()
2245 .shape_line(
2246 "→".into(),
2247 invisible_symbol_font_size,
2248 &[TextRun {
2249 len: "→".len(),
2250 font: self.style.text.font(),
2251 color: cx.theme().colors().editor_invisible,
2252 background_color: None,
2253 underline: None,
2254 }],
2255 )
2256 .unwrap();
2257 let space_invisible = cx
2258 .text_system()
2259 .shape_line(
2260 "•".into(),
2261 invisible_symbol_font_size,
2262 &[TextRun {
2263 len: "•".len(),
2264 font: self.style.text.font(),
2265 color: cx.theme().colors().editor_invisible,
2266 background_color: None,
2267 underline: None,
2268 }],
2269 )
2270 .unwrap();
2271
2272 LayoutState {
2273 mode: snapshot.mode,
2274 position_map: Arc::new(PositionMap {
2275 size: bounds.size,
2276 scroll_position: point(
2277 scroll_position.x * em_width,
2278 scroll_position.y * line_height,
2279 ),
2280 scroll_max,
2281 line_layouts,
2282 line_height,
2283 em_width,
2284 em_advance,
2285 snapshot,
2286 }),
2287 visible_anchor_range: start_anchor..end_anchor,
2288 visible_display_row_range: start_row..end_row,
2289 wrap_guides,
2290 gutter_size,
2291 gutter_padding: gutter_dimensions.padding,
2292 text_size,
2293 scrollbar_row_range,
2294 show_scrollbars,
2295 is_singleton,
2296 max_row,
2297 gutter_margin: gutter_dimensions.margin,
2298 active_rows,
2299 highlighted_rows,
2300 highlighted_ranges,
2301 line_numbers,
2302 display_hunks,
2303 blocks,
2304 selections,
2305 context_menu,
2306 code_actions_indicator,
2307 fold_indicators,
2308 tab_invisible,
2309 space_invisible,
2310 hover_popovers: hover,
2311 }
2312 })
2313 }
2314
2315 #[allow(clippy::too_many_arguments)]
2316 fn layout_blocks(
2317 &self,
2318 rows: Range<u32>,
2319 snapshot: &EditorSnapshot,
2320 editor_width: Pixels,
2321 scroll_width: Pixels,
2322 text_width: Pixels,
2323 gutter_padding: Pixels,
2324 gutter_width: Pixels,
2325 em_width: Pixels,
2326 text_x: Pixels,
2327 line_height: Pixels,
2328 style: &EditorStyle,
2329 line_layouts: &[LineWithInvisibles],
2330 editor: &mut Editor,
2331 editor_view: View<Editor>,
2332 cx: &mut ElementContext,
2333 ) -> (Pixels, Vec<BlockLayout>) {
2334 let mut block_id = 0;
2335 let (fixed_blocks, non_fixed_blocks) = snapshot
2336 .blocks_in_range(rows.clone())
2337 .partition::<Vec<_>, _>(|(_, block)| match block {
2338 TransformBlock::ExcerptHeader { .. } => false,
2339 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2340 });
2341
2342 let render_block = |block: &TransformBlock,
2343 available_space: Size<AvailableSpace>,
2344 block_id: usize,
2345 editor: &mut Editor,
2346 cx: &mut ElementContext| {
2347 let mut element = match block {
2348 TransformBlock::Custom(block) => {
2349 let align_to = block
2350 .position()
2351 .to_point(&snapshot.buffer_snapshot)
2352 .to_display_point(snapshot);
2353 let anchor_x = text_x
2354 + if rows.contains(&align_to.row()) {
2355 line_layouts[(align_to.row() - rows.start) as usize]
2356 .line
2357 .x_for_index(align_to.column() as usize)
2358 } else {
2359 layout_line(align_to.row(), snapshot, style, cx)
2360 .unwrap()
2361 .x_for_index(align_to.column() as usize)
2362 };
2363
2364 block.render(&mut BlockContext {
2365 context: cx,
2366 anchor_x,
2367 gutter_padding,
2368 line_height,
2369 gutter_width,
2370 em_width,
2371 block_id,
2372 max_width: scroll_width.max(text_width),
2373 view: editor_view.clone(),
2374 editor_style: &self.style,
2375 })
2376 }
2377
2378 TransformBlock::ExcerptHeader {
2379 buffer,
2380 range,
2381 starts_new_buffer,
2382 ..
2383 } => {
2384 let include_root = editor
2385 .project
2386 .as_ref()
2387 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2388 .unwrap_or_default();
2389
2390 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2391 let jump_path = ProjectPath {
2392 worktree_id: file.worktree_id(cx),
2393 path: file.path.clone(),
2394 };
2395 let jump_anchor = range
2396 .primary
2397 .as_ref()
2398 .map_or(range.context.start, |primary| primary.start);
2399 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2400
2401 cx.listener_for(&self.editor, move |editor, _, cx| {
2402 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2403 })
2404 });
2405
2406 let element = if *starts_new_buffer {
2407 let path = buffer.resolve_file_path(cx, include_root);
2408 let mut filename = None;
2409 let mut parent_path = None;
2410 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2411 if let Some(path) = path {
2412 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2413 parent_path = path
2414 .parent()
2415 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2416 }
2417
2418 v_flex()
2419 .id(("path header container", block_id))
2420 .size_full()
2421 .justify_center()
2422 .p(gpui::px(6.))
2423 .child(
2424 h_flex()
2425 .id("path header block")
2426 .size_full()
2427 .pl(gpui::px(12.))
2428 .pr(gpui::px(8.))
2429 .rounded_md()
2430 .shadow_md()
2431 .border()
2432 .border_color(cx.theme().colors().border)
2433 .bg(cx.theme().colors().editor_subheader_background)
2434 .justify_between()
2435 .hover(|style| style.bg(cx.theme().colors().element_hover))
2436 .child(
2437 h_flex().gap_3().child(
2438 h_flex()
2439 .gap_2()
2440 .child(
2441 filename
2442 .map(SharedString::from)
2443 .unwrap_or_else(|| "untitled".into()),
2444 )
2445 .when_some(parent_path, |then, path| {
2446 then.child(
2447 div().child(path).text_color(
2448 cx.theme().colors().text_muted,
2449 ),
2450 )
2451 }),
2452 ),
2453 )
2454 .when_some(jump_handler, |this, jump_handler| {
2455 this.cursor_pointer()
2456 .tooltip(|cx| {
2457 Tooltip::for_action(
2458 "Jump to Buffer",
2459 &OpenExcerpts,
2460 cx,
2461 )
2462 })
2463 .on_mouse_down(MouseButton::Left, |_, cx| {
2464 cx.stop_propagation()
2465 })
2466 .on_click(jump_handler)
2467 }),
2468 )
2469 } else {
2470 h_flex()
2471 .id(("collapsed context", block_id))
2472 .size_full()
2473 .gap(gutter_padding)
2474 .child(
2475 h_flex()
2476 .justify_end()
2477 .flex_none()
2478 .w(gutter_width - gutter_padding)
2479 .h_full()
2480 .text_buffer(cx)
2481 .text_color(cx.theme().colors().editor_line_number)
2482 .child("..."),
2483 )
2484 .child(
2485 ButtonLike::new("jump to collapsed context")
2486 .style(ButtonStyle::Transparent)
2487 .full_width()
2488 .child(
2489 div()
2490 .h_px()
2491 .w_full()
2492 .bg(cx.theme().colors().border_variant)
2493 .group_hover("", |style| {
2494 style.bg(cx.theme().colors().border)
2495 }),
2496 )
2497 .when_some(jump_handler, |this, jump_handler| {
2498 this.on_click(jump_handler).tooltip(|cx| {
2499 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2500 })
2501 }),
2502 )
2503 };
2504 element.into_any()
2505 }
2506 };
2507
2508 let size = element.measure(available_space, cx);
2509 (element, size)
2510 };
2511
2512 let mut fixed_block_max_width = Pixels::ZERO;
2513 let mut blocks = Vec::new();
2514 for (row, block) in fixed_blocks {
2515 let available_space = size(
2516 AvailableSpace::MinContent,
2517 AvailableSpace::Definite(block.height() as f32 * line_height),
2518 );
2519 let (element, element_size) =
2520 render_block(block, available_space, block_id, editor, cx);
2521 block_id += 1;
2522 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2523 blocks.push(BlockLayout {
2524 row,
2525 element,
2526 available_space,
2527 style: BlockStyle::Fixed,
2528 });
2529 }
2530 for (row, block) in non_fixed_blocks {
2531 let style = match block {
2532 TransformBlock::Custom(block) => block.style(),
2533 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2534 };
2535 let width = match style {
2536 BlockStyle::Sticky => editor_width,
2537 BlockStyle::Flex => editor_width
2538 .max(fixed_block_max_width)
2539 .max(gutter_width + scroll_width),
2540 BlockStyle::Fixed => unreachable!(),
2541 };
2542 let available_space = size(
2543 AvailableSpace::Definite(width),
2544 AvailableSpace::Definite(block.height() as f32 * line_height),
2545 );
2546 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2547 block_id += 1;
2548 blocks.push(BlockLayout {
2549 row,
2550 element,
2551 available_space,
2552 style,
2553 });
2554 }
2555 (
2556 scroll_width.max(fixed_block_max_width - gutter_width),
2557 blocks,
2558 )
2559 }
2560
2561 fn paint_scroll_wheel_listener(
2562 &mut self,
2563 interactive_bounds: &InteractiveBounds,
2564 layout: &LayoutState,
2565 cx: &mut ElementContext,
2566 ) {
2567 cx.on_mouse_event({
2568 let position_map = layout.position_map.clone();
2569 let editor = self.editor.clone();
2570 let interactive_bounds = interactive_bounds.clone();
2571 let mut delta = ScrollDelta::default();
2572
2573 move |event: &ScrollWheelEvent, phase, cx| {
2574 if phase == DispatchPhase::Bubble
2575 && interactive_bounds.visibly_contains(&event.position, cx)
2576 {
2577 delta = delta.coalesce(event.delta);
2578 editor.update(cx, |editor, cx| {
2579 let position = event.position;
2580 let position_map: &PositionMap = &position_map;
2581 let bounds = &interactive_bounds;
2582 if !bounds.visibly_contains(&position, cx) {
2583 return;
2584 }
2585
2586 let line_height = position_map.line_height;
2587 let max_glyph_width = position_map.em_width;
2588 let (delta, axis) = match delta {
2589 gpui::ScrollDelta::Pixels(mut pixels) => {
2590 //Trackpad
2591 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2592 (pixels, axis)
2593 }
2594
2595 gpui::ScrollDelta::Lines(lines) => {
2596 //Not trackpad
2597 let pixels =
2598 point(lines.x * max_glyph_width, lines.y * line_height);
2599 (pixels, None)
2600 }
2601 };
2602
2603 let scroll_position = position_map.snapshot.scroll_position();
2604 let x = f32::from(
2605 (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width,
2606 );
2607 let y =
2608 f32::from((scroll_position.y * line_height - delta.y) / line_height);
2609 let scroll_position =
2610 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2611 editor.scroll(scroll_position, axis, cx);
2612 cx.stop_propagation();
2613 });
2614 }
2615 }
2616 });
2617 }
2618
2619 fn paint_mouse_listeners(
2620 &mut self,
2621 bounds: Bounds<Pixels>,
2622 gutter_bounds: Bounds<Pixels>,
2623 text_bounds: Bounds<Pixels>,
2624 layout: &LayoutState,
2625 cx: &mut ElementContext,
2626 ) {
2627 let interactive_bounds = InteractiveBounds {
2628 bounds: bounds.intersect(&cx.content_mask().bounds),
2629 stacking_order: cx.stacking_order().clone(),
2630 };
2631
2632 self.paint_scroll_wheel_listener(&interactive_bounds, layout, cx);
2633
2634 cx.on_mouse_event({
2635 let position_map = layout.position_map.clone();
2636 let editor = self.editor.clone();
2637 let stacking_order = cx.stacking_order().clone();
2638 let interactive_bounds = interactive_bounds.clone();
2639
2640 move |event: &MouseDownEvent, phase, cx| {
2641 if phase == DispatchPhase::Bubble
2642 && interactive_bounds.visibly_contains(&event.position, cx)
2643 {
2644 match event.button {
2645 MouseButton::Left => editor.update(cx, |editor, cx| {
2646 Self::mouse_left_down(
2647 editor,
2648 event,
2649 &position_map,
2650 text_bounds,
2651 gutter_bounds,
2652 &stacking_order,
2653 cx,
2654 );
2655 }),
2656 MouseButton::Right => editor.update(cx, |editor, cx| {
2657 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx);
2658 }),
2659 _ => {}
2660 };
2661 }
2662 }
2663 });
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: &MouseUpEvent, phase, cx| {
2672 if phase == DispatchPhase::Bubble {
2673 editor.update(cx, |editor, cx| {
2674 Self::mouse_up(
2675 editor,
2676 event,
2677 &position_map,
2678 text_bounds,
2679 &interactive_bounds,
2680 &stacking_order,
2681 cx,
2682 )
2683 });
2684 }
2685 }
2686 });
2687 cx.on_mouse_event({
2688 let position_map = layout.position_map.clone();
2689 let editor = self.editor.clone();
2690 let stacking_order = cx.stacking_order().clone();
2691
2692 move |event: &MouseMoveEvent, phase, cx| {
2693 // if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
2694
2695 if phase == DispatchPhase::Bubble {
2696 editor.update(cx, |editor, cx| {
2697 if event.pressed_button == Some(MouseButton::Left) {
2698 Self::mouse_dragged(
2699 editor,
2700 event,
2701 &position_map,
2702 text_bounds,
2703 gutter_bounds,
2704 &stacking_order,
2705 cx,
2706 )
2707 }
2708
2709 if interactive_bounds.visibly_contains(&event.position, cx) {
2710 Self::mouse_moved(
2711 editor,
2712 event,
2713 &position_map,
2714 text_bounds,
2715 gutter_bounds,
2716 &stacking_order,
2717 cx,
2718 )
2719 }
2720 });
2721 }
2722 }
2723 });
2724 }
2725}
2726
2727#[derive(Debug)]
2728pub(crate) struct LineWithInvisibles {
2729 pub line: ShapedLine,
2730 invisibles: Vec<Invisible>,
2731}
2732
2733impl LineWithInvisibles {
2734 fn from_chunks<'a>(
2735 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2736 text_style: &TextStyle,
2737 max_line_len: usize,
2738 max_line_count: usize,
2739 line_number_layouts: &[Option<ShapedLine>],
2740 editor_mode: EditorMode,
2741 cx: &WindowContext,
2742 ) -> Vec<Self> {
2743 let mut layouts = Vec::with_capacity(max_line_count);
2744 let mut line = String::new();
2745 let mut invisibles = Vec::new();
2746 let mut styles = Vec::new();
2747 let mut non_whitespace_added = false;
2748 let mut row = 0;
2749 let mut line_exceeded_max_len = false;
2750 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2751
2752 for highlighted_chunk in chunks.chain([HighlightedChunk {
2753 chunk: "\n",
2754 style: None,
2755 is_tab: false,
2756 }]) {
2757 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2758 if ix > 0 {
2759 let shaped_line = cx
2760 .text_system()
2761 .shape_line(line.clone().into(), font_size, &styles)
2762 .unwrap();
2763 layouts.push(Self {
2764 line: shaped_line,
2765 invisibles: invisibles.drain(..).collect(),
2766 });
2767
2768 line.clear();
2769 styles.clear();
2770 row += 1;
2771 line_exceeded_max_len = false;
2772 non_whitespace_added = false;
2773 if row == max_line_count {
2774 return layouts;
2775 }
2776 }
2777
2778 if !line_chunk.is_empty() && !line_exceeded_max_len {
2779 let text_style = if let Some(style) = highlighted_chunk.style {
2780 Cow::Owned(text_style.clone().highlight(style))
2781 } else {
2782 Cow::Borrowed(text_style)
2783 };
2784
2785 if line.len() + line_chunk.len() > max_line_len {
2786 let mut chunk_len = max_line_len - line.len();
2787 while !line_chunk.is_char_boundary(chunk_len) {
2788 chunk_len -= 1;
2789 }
2790 line_chunk = &line_chunk[..chunk_len];
2791 line_exceeded_max_len = true;
2792 }
2793
2794 styles.push(TextRun {
2795 len: line_chunk.len(),
2796 font: text_style.font(),
2797 color: text_style.color,
2798 background_color: text_style.background_color,
2799 underline: text_style.underline,
2800 });
2801
2802 if editor_mode == EditorMode::Full {
2803 // Line wrap pads its contents with fake whitespaces,
2804 // avoid printing them
2805 let inside_wrapped_string = line_number_layouts
2806 .get(row)
2807 .and_then(|layout| layout.as_ref())
2808 .is_none();
2809 if highlighted_chunk.is_tab {
2810 if non_whitespace_added || !inside_wrapped_string {
2811 invisibles.push(Invisible::Tab {
2812 line_start_offset: line.len(),
2813 });
2814 }
2815 } else {
2816 invisibles.extend(
2817 line_chunk
2818 .chars()
2819 .enumerate()
2820 .filter(|(_, line_char)| {
2821 let is_whitespace = line_char.is_whitespace();
2822 non_whitespace_added |= !is_whitespace;
2823 is_whitespace
2824 && (non_whitespace_added || !inside_wrapped_string)
2825 })
2826 .map(|(whitespace_index, _)| Invisible::Whitespace {
2827 line_offset: line.len() + whitespace_index,
2828 }),
2829 )
2830 }
2831 }
2832
2833 line.push_str(line_chunk);
2834 }
2835 }
2836 }
2837
2838 layouts
2839 }
2840
2841 fn draw(
2842 &self,
2843 layout: &LayoutState,
2844 row: u32,
2845 content_origin: gpui::Point<Pixels>,
2846 whitespace_setting: ShowWhitespaceSetting,
2847 selection_ranges: &[Range<DisplayPoint>],
2848 cx: &mut ElementContext,
2849 ) {
2850 let line_height = layout.position_map.line_height;
2851 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2852
2853 self.line
2854 .paint(
2855 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2856 line_height,
2857 cx,
2858 )
2859 .log_err();
2860
2861 self.draw_invisibles(
2862 &selection_ranges,
2863 layout,
2864 content_origin,
2865 line_y,
2866 row,
2867 line_height,
2868 whitespace_setting,
2869 cx,
2870 );
2871 }
2872
2873 fn draw_invisibles(
2874 &self,
2875 selection_ranges: &[Range<DisplayPoint>],
2876 layout: &LayoutState,
2877 content_origin: gpui::Point<Pixels>,
2878 line_y: Pixels,
2879 row: u32,
2880 line_height: Pixels,
2881 whitespace_setting: ShowWhitespaceSetting,
2882 cx: &mut ElementContext,
2883 ) {
2884 let allowed_invisibles_regions = match whitespace_setting {
2885 ShowWhitespaceSetting::None => return,
2886 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2887 ShowWhitespaceSetting::All => None,
2888 };
2889
2890 for invisible in &self.invisibles {
2891 let (&token_offset, invisible_symbol) = match invisible {
2892 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2893 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2894 };
2895
2896 let x_offset = self.line.x_for_index(token_offset);
2897 let invisible_offset =
2898 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2899 let origin = content_origin
2900 + gpui::point(
2901 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2902 line_y,
2903 );
2904
2905 if let Some(allowed_regions) = allowed_invisibles_regions {
2906 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2907 if !allowed_regions
2908 .iter()
2909 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2910 {
2911 continue;
2912 }
2913 }
2914 invisible_symbol.paint(origin, line_height, cx).log_err();
2915 }
2916 }
2917}
2918
2919#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2920enum Invisible {
2921 Tab { line_start_offset: usize },
2922 Whitespace { line_offset: usize },
2923}
2924
2925impl Element for EditorElement {
2926 type State = ();
2927
2928 fn request_layout(
2929 &mut self,
2930 _element_state: Option<Self::State>,
2931 cx: &mut gpui::ElementContext,
2932 ) -> (gpui::LayoutId, Self::State) {
2933 cx.with_view_id(self.editor.entity_id(), |cx| {
2934 self.editor.update(cx, |editor, cx| {
2935 editor.set_style(self.style.clone(), cx);
2936
2937 let layout_id = match editor.mode {
2938 EditorMode::SingleLine => {
2939 let rem_size = cx.rem_size();
2940 let mut style = Style::default();
2941 style.size.width = relative(1.).into();
2942 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2943 cx.with_element_context(|cx| cx.request_layout(&style, None))
2944 }
2945 EditorMode::AutoHeight { max_lines } => {
2946 let editor_handle = cx.view().clone();
2947 let max_line_number_width =
2948 self.max_line_number_width(&editor.snapshot(cx), cx);
2949 cx.with_element_context(|cx| {
2950 cx.request_measured_layout(
2951 Style::default(),
2952 move |known_dimensions, _, cx| {
2953 editor_handle
2954 .update(cx, |editor, cx| {
2955 compute_auto_height_layout(
2956 editor,
2957 max_lines,
2958 max_line_number_width,
2959 known_dimensions,
2960 cx,
2961 )
2962 })
2963 .unwrap_or_default()
2964 },
2965 )
2966 })
2967 }
2968 EditorMode::Full => {
2969 let mut style = Style::default();
2970 style.size.width = relative(1.).into();
2971 style.size.height = relative(1.).into();
2972 cx.with_element_context(|cx| cx.request_layout(&style, None))
2973 }
2974 };
2975
2976 (layout_id, ())
2977 })
2978 })
2979 }
2980
2981 fn paint(
2982 &mut self,
2983 bounds: Bounds<gpui::Pixels>,
2984 _element_state: &mut Self::State,
2985 cx: &mut gpui::ElementContext,
2986 ) {
2987 let editor = self.editor.clone();
2988
2989 cx.paint_view(self.editor.entity_id(), |cx| {
2990 cx.with_text_style(
2991 Some(gpui::TextStyleRefinement {
2992 font_size: Some(self.style.text.font_size),
2993 line_height: Some(self.style.text.line_height),
2994 ..Default::default()
2995 }),
2996 |cx| {
2997 let mut layout = self.compute_layout(bounds, cx);
2998 let gutter_bounds = Bounds {
2999 origin: bounds.origin,
3000 size: layout.gutter_size,
3001 };
3002 let text_bounds = Bounds {
3003 origin: gutter_bounds.upper_right(),
3004 size: layout.text_size,
3005 };
3006
3007 let focus_handle = editor.focus_handle(cx);
3008 let key_context = self.editor.read(cx).key_context(cx);
3009 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
3010 self.register_actions(cx);
3011 self.register_key_listeners(cx);
3012
3013 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3014 cx.handle_input(
3015 &focus_handle,
3016 ElementInputHandler::new(bounds, self.editor.clone()),
3017 );
3018
3019 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
3020 if layout.gutter_size.width > Pixels::ZERO {
3021 self.paint_gutter(gutter_bounds, &mut layout, cx);
3022 }
3023 self.paint_text(text_bounds, &mut layout, cx);
3024
3025 cx.with_z_index(0, |cx| {
3026 self.paint_mouse_listeners(
3027 bounds,
3028 gutter_bounds,
3029 text_bounds,
3030 &layout,
3031 cx,
3032 );
3033 });
3034 if !layout.blocks.is_empty() {
3035 cx.with_z_index(0, |cx| {
3036 cx.with_element_id(Some("editor_blocks"), |cx| {
3037 self.paint_blocks(bounds, &mut layout, cx);
3038 });
3039 })
3040 }
3041
3042 cx.with_z_index(1, |cx| {
3043 self.paint_overlays(text_bounds, &mut layout, cx);
3044 });
3045
3046 cx.with_z_index(2, |cx| self.paint_scrollbar(bounds, &mut layout, cx));
3047 });
3048 })
3049 },
3050 )
3051 })
3052 }
3053}
3054
3055impl IntoElement for EditorElement {
3056 type Element = Self;
3057
3058 fn element_id(&self) -> Option<gpui::ElementId> {
3059 self.editor.element_id()
3060 }
3061
3062 fn into_element(self) -> Self::Element {
3063 self
3064 }
3065}
3066
3067type BufferRow = u32;
3068
3069pub struct LayoutState {
3070 position_map: Arc<PositionMap>,
3071 gutter_size: Size<Pixels>,
3072 gutter_padding: Pixels,
3073 gutter_margin: Pixels,
3074 text_size: gpui::Size<Pixels>,
3075 mode: EditorMode,
3076 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3077 visible_anchor_range: Range<Anchor>,
3078 visible_display_row_range: Range<u32>,
3079 active_rows: BTreeMap<u32, bool>,
3080 highlighted_rows: Option<Range<u32>>,
3081 line_numbers: Vec<Option<ShapedLine>>,
3082 display_hunks: Vec<DisplayDiffHunk>,
3083 blocks: Vec<BlockLayout>,
3084 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3085 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3086 scrollbar_row_range: Range<f32>,
3087 show_scrollbars: bool,
3088 is_singleton: bool,
3089 max_row: u32,
3090 context_menu: Option<(DisplayPoint, AnyElement)>,
3091 code_actions_indicator: Option<CodeActionsIndicator>,
3092 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3093 fold_indicators: Vec<Option<IconButton>>,
3094 tab_invisible: ShapedLine,
3095 space_invisible: ShapedLine,
3096}
3097
3098struct CodeActionsIndicator {
3099 row: u32,
3100 button: IconButton,
3101}
3102
3103struct PositionMap {
3104 size: Size<Pixels>,
3105 line_height: Pixels,
3106 scroll_position: gpui::Point<Pixels>,
3107 scroll_max: gpui::Point<f32>,
3108 em_width: Pixels,
3109 em_advance: Pixels,
3110 line_layouts: Vec<LineWithInvisibles>,
3111 snapshot: EditorSnapshot,
3112}
3113
3114#[derive(Debug, Copy, Clone)]
3115pub struct PointForPosition {
3116 pub previous_valid: DisplayPoint,
3117 pub next_valid: DisplayPoint,
3118 pub exact_unclipped: DisplayPoint,
3119 pub column_overshoot_after_line_end: u32,
3120}
3121
3122impl PointForPosition {
3123 #[cfg(test)]
3124 pub fn valid(valid: DisplayPoint) -> Self {
3125 Self {
3126 previous_valid: valid,
3127 next_valid: valid,
3128 exact_unclipped: valid,
3129 column_overshoot_after_line_end: 0,
3130 }
3131 }
3132
3133 pub fn as_valid(&self) -> Option<DisplayPoint> {
3134 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3135 Some(self.previous_valid)
3136 } else {
3137 None
3138 }
3139 }
3140}
3141
3142impl PositionMap {
3143 fn point_for_position(
3144 &self,
3145 text_bounds: Bounds<Pixels>,
3146 position: gpui::Point<Pixels>,
3147 ) -> PointForPosition {
3148 let scroll_position = self.snapshot.scroll_position();
3149 let position = position - text_bounds.origin;
3150 let y = position.y.max(px(0.)).min(self.size.height);
3151 let x = position.x + (scroll_position.x * self.em_width);
3152 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3153
3154 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3155 .line_layouts
3156 .get(row as usize - scroll_position.y as usize)
3157 .map(|&LineWithInvisibles { ref line, .. }| line)
3158 {
3159 if let Some(ix) = line.index_for_x(x) {
3160 (ix as u32, px(0.))
3161 } else {
3162 (line.len as u32, px(0.).max(x - line.width))
3163 }
3164 } else {
3165 (0, x)
3166 };
3167
3168 let mut exact_unclipped = DisplayPoint::new(row, column);
3169 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3170 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3171
3172 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3173 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3174 PointForPosition {
3175 previous_valid,
3176 next_valid,
3177 exact_unclipped,
3178 column_overshoot_after_line_end,
3179 }
3180 }
3181}
3182
3183struct BlockLayout {
3184 row: u32,
3185 element: AnyElement,
3186 available_space: Size<AvailableSpace>,
3187 style: BlockStyle,
3188}
3189
3190fn layout_line(
3191 row: u32,
3192 snapshot: &EditorSnapshot,
3193 style: &EditorStyle,
3194 cx: &WindowContext,
3195) -> Result<ShapedLine> {
3196 let mut line = snapshot.line(row);
3197
3198 if line.len() > MAX_LINE_LEN {
3199 let mut len = MAX_LINE_LEN;
3200 while !line.is_char_boundary(len) {
3201 len -= 1;
3202 }
3203
3204 line.truncate(len);
3205 }
3206
3207 cx.text_system().shape_line(
3208 line.into(),
3209 style.text.font_size.to_pixels(cx.rem_size()),
3210 &[TextRun {
3211 len: snapshot.line_len(row) as usize,
3212 font: style.text.font(),
3213 color: Hsla::default(),
3214 background_color: None,
3215 underline: None,
3216 }],
3217 )
3218}
3219
3220#[derive(Debug)]
3221pub struct Cursor {
3222 origin: gpui::Point<Pixels>,
3223 block_width: Pixels,
3224 line_height: Pixels,
3225 color: Hsla,
3226 shape: CursorShape,
3227 block_text: Option<ShapedLine>,
3228 cursor_name: Option<CursorName>,
3229}
3230
3231#[derive(Debug)]
3232pub struct CursorName {
3233 string: SharedString,
3234 color: Hsla,
3235 is_top_row: bool,
3236 z_index: u16,
3237}
3238
3239impl Cursor {
3240 pub fn new(
3241 origin: gpui::Point<Pixels>,
3242 block_width: Pixels,
3243 line_height: Pixels,
3244 color: Hsla,
3245 shape: CursorShape,
3246 block_text: Option<ShapedLine>,
3247 cursor_name: Option<CursorName>,
3248 ) -> Cursor {
3249 Cursor {
3250 origin,
3251 block_width,
3252 line_height,
3253 color,
3254 shape,
3255 block_text,
3256 cursor_name,
3257 }
3258 }
3259
3260 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3261 Bounds {
3262 origin: self.origin + origin,
3263 size: size(self.block_width, self.line_height),
3264 }
3265 }
3266
3267 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3268 let bounds = match self.shape {
3269 CursorShape::Bar => Bounds {
3270 origin: self.origin + origin,
3271 size: size(px(2.0), self.line_height),
3272 },
3273 CursorShape::Block | CursorShape::Hollow => Bounds {
3274 origin: self.origin + origin,
3275 size: size(self.block_width, self.line_height),
3276 },
3277 CursorShape::Underscore => Bounds {
3278 origin: self.origin
3279 + origin
3280 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3281 size: size(self.block_width, px(2.0)),
3282 },
3283 };
3284
3285 //Draw background or border quad
3286 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3287 outline(bounds, self.color)
3288 } else {
3289 fill(bounds, self.color)
3290 };
3291
3292 if let Some(name) = &self.cursor_name {
3293 let text_size = self.line_height / 1.5;
3294
3295 let name_origin = if name.is_top_row {
3296 point(bounds.right() - px(1.), bounds.top())
3297 } else {
3298 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3299 };
3300 cx.with_z_index(name.z_index, |cx| {
3301 div()
3302 .bg(self.color)
3303 .text_size(text_size)
3304 .px_0p5()
3305 .line_height(text_size + px(2.))
3306 .text_color(name.color)
3307 .child(name.string.clone())
3308 .into_any_element()
3309 .draw(
3310 name_origin,
3311 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3312 cx,
3313 )
3314 })
3315 }
3316
3317 cx.paint_quad(cursor);
3318
3319 if let Some(block_text) = &self.block_text {
3320 block_text
3321 .paint(self.origin + origin, self.line_height, cx)
3322 .log_err();
3323 }
3324 }
3325
3326 pub fn shape(&self) -> CursorShape {
3327 self.shape
3328 }
3329}
3330
3331#[derive(Debug)]
3332pub struct HighlightedRange {
3333 pub start_y: Pixels,
3334 pub line_height: Pixels,
3335 pub lines: Vec<HighlightedRangeLine>,
3336 pub color: Hsla,
3337 pub corner_radius: Pixels,
3338}
3339
3340#[derive(Debug)]
3341pub struct HighlightedRangeLine {
3342 pub start_x: Pixels,
3343 pub end_x: Pixels,
3344}
3345
3346impl HighlightedRange {
3347 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3348 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3349 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3350 self.paint_lines(
3351 self.start_y + self.line_height,
3352 &self.lines[1..],
3353 bounds,
3354 cx,
3355 );
3356 } else {
3357 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3358 }
3359 }
3360
3361 fn paint_lines(
3362 &self,
3363 start_y: Pixels,
3364 lines: &[HighlightedRangeLine],
3365 _bounds: Bounds<Pixels>,
3366 cx: &mut ElementContext,
3367 ) {
3368 if lines.is_empty() {
3369 return;
3370 }
3371
3372 let first_line = lines.first().unwrap();
3373 let last_line = lines.last().unwrap();
3374
3375 let first_top_left = point(first_line.start_x, start_y);
3376 let first_top_right = point(first_line.end_x, start_y);
3377
3378 let curve_height = point(Pixels::ZERO, self.corner_radius);
3379 let curve_width = |start_x: Pixels, end_x: Pixels| {
3380 let max = (end_x - start_x) / 2.;
3381 let width = if max < self.corner_radius {
3382 max
3383 } else {
3384 self.corner_radius
3385 };
3386
3387 point(width, Pixels::ZERO)
3388 };
3389
3390 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3391 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3392 path.curve_to(first_top_right + curve_height, first_top_right);
3393
3394 let mut iter = lines.iter().enumerate().peekable();
3395 while let Some((ix, line)) = iter.next() {
3396 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3397
3398 if let Some((_, next_line)) = iter.peek() {
3399 let next_top_right = point(next_line.end_x, bottom_right.y);
3400
3401 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3402 Ordering::Equal => {
3403 path.line_to(bottom_right);
3404 }
3405 Ordering::Less => {
3406 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3407 path.line_to(bottom_right - curve_height);
3408 if self.corner_radius > Pixels::ZERO {
3409 path.curve_to(bottom_right - curve_width, bottom_right);
3410 }
3411 path.line_to(next_top_right + curve_width);
3412 if self.corner_radius > Pixels::ZERO {
3413 path.curve_to(next_top_right + curve_height, next_top_right);
3414 }
3415 }
3416 Ordering::Greater => {
3417 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3418 path.line_to(bottom_right - curve_height);
3419 if self.corner_radius > Pixels::ZERO {
3420 path.curve_to(bottom_right + curve_width, bottom_right);
3421 }
3422 path.line_to(next_top_right - curve_width);
3423 if self.corner_radius > Pixels::ZERO {
3424 path.curve_to(next_top_right + curve_height, next_top_right);
3425 }
3426 }
3427 }
3428 } else {
3429 let curve_width = curve_width(line.start_x, line.end_x);
3430 path.line_to(bottom_right - curve_height);
3431 if self.corner_radius > Pixels::ZERO {
3432 path.curve_to(bottom_right - curve_width, bottom_right);
3433 }
3434
3435 let bottom_left = point(line.start_x, bottom_right.y);
3436 path.line_to(bottom_left + curve_width);
3437 if self.corner_radius > Pixels::ZERO {
3438 path.curve_to(bottom_left - curve_height, bottom_left);
3439 }
3440 }
3441 }
3442
3443 if first_line.start_x > last_line.start_x {
3444 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3445 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3446 path.line_to(second_top_left + curve_height);
3447 if self.corner_radius > Pixels::ZERO {
3448 path.curve_to(second_top_left + curve_width, second_top_left);
3449 }
3450 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3451 path.line_to(first_bottom_left - curve_width);
3452 if self.corner_radius > Pixels::ZERO {
3453 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3454 }
3455 }
3456
3457 path.line_to(first_top_left + curve_height);
3458 if self.corner_radius > Pixels::ZERO {
3459 path.curve_to(first_top_left + top_curve_width, first_top_left);
3460 }
3461 path.line_to(first_top_right - top_curve_width);
3462
3463 cx.paint_path(path, self.color);
3464 }
3465}
3466
3467pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3468 (delta.pow(1.5) / 100.0).into()
3469}
3470
3471fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3472 (delta.pow(1.2) / 300.0).into()
3473}
3474
3475#[cfg(test)]
3476mod tests {
3477 use super::*;
3478 use crate::{
3479 display_map::{BlockDisposition, BlockProperties},
3480 editor_tests::{init_test, update_test_language_settings},
3481 Editor, MultiBuffer,
3482 };
3483 use gpui::TestAppContext;
3484 use language::language_settings;
3485 use log::info;
3486 use std::{num::NonZeroU32, sync::Arc};
3487 use util::test::sample_text;
3488
3489 #[gpui::test]
3490 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3491 init_test(cx, |_| {});
3492 let window = cx.add_window(|cx| {
3493 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3494 Editor::new(EditorMode::Full, buffer, None, cx)
3495 });
3496
3497 let editor = window.root(cx).unwrap();
3498 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3499 let element = EditorElement::new(&editor, style);
3500
3501 let layouts = window
3502 .update(cx, |editor, cx| {
3503 let snapshot = editor.snapshot(cx);
3504 element
3505 .shape_line_numbers(
3506 0..6,
3507 &Default::default(),
3508 DisplayPoint::new(0, 0),
3509 false,
3510 &snapshot,
3511 cx,
3512 )
3513 .0
3514 })
3515 .unwrap();
3516 assert_eq!(layouts.len(), 6);
3517
3518 let relative_rows = window
3519 .update(cx, |editor, cx| {
3520 let snapshot = editor.snapshot(cx);
3521 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3522 })
3523 .unwrap();
3524 assert_eq!(relative_rows[&0], 3);
3525 assert_eq!(relative_rows[&1], 2);
3526 assert_eq!(relative_rows[&2], 1);
3527 // current line has no relative number
3528 assert_eq!(relative_rows[&4], 1);
3529 assert_eq!(relative_rows[&5], 2);
3530
3531 // works if cursor is before screen
3532 let relative_rows = window
3533 .update(cx, |editor, cx| {
3534 let snapshot = editor.snapshot(cx);
3535
3536 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3537 })
3538 .unwrap();
3539 assert_eq!(relative_rows.len(), 3);
3540 assert_eq!(relative_rows[&3], 2);
3541 assert_eq!(relative_rows[&4], 3);
3542 assert_eq!(relative_rows[&5], 4);
3543
3544 // works if cursor is after screen
3545 let relative_rows = window
3546 .update(cx, |editor, cx| {
3547 let snapshot = editor.snapshot(cx);
3548
3549 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3550 })
3551 .unwrap();
3552 assert_eq!(relative_rows.len(), 3);
3553 assert_eq!(relative_rows[&0], 5);
3554 assert_eq!(relative_rows[&1], 4);
3555 assert_eq!(relative_rows[&2], 3);
3556 }
3557
3558 #[gpui::test]
3559 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3560 init_test(cx, |_| {});
3561
3562 let window = cx.add_window(|cx| {
3563 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3564 Editor::new(EditorMode::Full, buffer, None, cx)
3565 });
3566 let editor = window.root(cx).unwrap();
3567 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3568 let mut element = EditorElement::new(&editor, style);
3569
3570 window
3571 .update(cx, |editor, cx| {
3572 editor.cursor_shape = CursorShape::Block;
3573 editor.change_selections(None, cx, |s| {
3574 s.select_ranges([
3575 Point::new(0, 0)..Point::new(1, 0),
3576 Point::new(3, 2)..Point::new(3, 3),
3577 Point::new(5, 6)..Point::new(6, 0),
3578 ]);
3579 });
3580 })
3581 .unwrap();
3582 let state = cx
3583 .update_window(window.into(), |view, cx| {
3584 cx.with_element_context(|cx| {
3585 cx.with_view_id(view.entity_id(), |cx| {
3586 element.compute_layout(
3587 Bounds {
3588 origin: point(px(500.), px(500.)),
3589 size: size(px(500.), px(500.)),
3590 },
3591 cx,
3592 )
3593 })
3594 })
3595 })
3596 .unwrap();
3597
3598 assert_eq!(state.selections.len(), 1);
3599 let local_selections = &state.selections[0].1;
3600 assert_eq!(local_selections.len(), 3);
3601 // moves cursor back one line
3602 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3603 assert_eq!(
3604 local_selections[0].range,
3605 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3606 );
3607
3608 // moves cursor back one column
3609 assert_eq!(
3610 local_selections[1].range,
3611 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3612 );
3613 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3614
3615 // leaves cursor on the max point
3616 assert_eq!(
3617 local_selections[2].range,
3618 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3619 );
3620 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3621
3622 // active lines does not include 1 (even though the range of the selection does)
3623 assert_eq!(
3624 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3625 vec![0, 3, 5, 6]
3626 );
3627
3628 // multi-buffer support
3629 // in DisplayPoint coordinates, this is what we're dealing with:
3630 // 0: [[file
3631 // 1: header]]
3632 // 2: aaaaaa
3633 // 3: bbbbbb
3634 // 4: cccccc
3635 // 5:
3636 // 6: ...
3637 // 7: ffffff
3638 // 8: gggggg
3639 // 9: hhhhhh
3640 // 10:
3641 // 11: [[file
3642 // 12: header]]
3643 // 13: bbbbbb
3644 // 14: cccccc
3645 // 15: dddddd
3646 let window = cx.add_window(|cx| {
3647 let buffer = MultiBuffer::build_multi(
3648 [
3649 (
3650 &(sample_text(8, 6, 'a') + "\n"),
3651 vec![
3652 Point::new(0, 0)..Point::new(3, 0),
3653 Point::new(4, 0)..Point::new(7, 0),
3654 ],
3655 ),
3656 (
3657 &(sample_text(8, 6, 'a') + "\n"),
3658 vec![Point::new(1, 0)..Point::new(3, 0)],
3659 ),
3660 ],
3661 cx,
3662 );
3663 Editor::new(EditorMode::Full, buffer, None, cx)
3664 });
3665 let editor = window.root(cx).unwrap();
3666 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3667 let mut element = EditorElement::new(&editor, style);
3668 let _state = window.update(cx, |editor, cx| {
3669 editor.cursor_shape = CursorShape::Block;
3670 editor.change_selections(None, cx, |s| {
3671 s.select_display_ranges([
3672 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3673 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3674 ]);
3675 });
3676 });
3677
3678 let state = cx
3679 .update_window(window.into(), |view, cx| {
3680 cx.with_element_context(|cx| {
3681 cx.with_view_id(view.entity_id(), |cx| {
3682 element.compute_layout(
3683 Bounds {
3684 origin: point(px(500.), px(500.)),
3685 size: size(px(500.), px(500.)),
3686 },
3687 cx,
3688 )
3689 })
3690 })
3691 })
3692 .unwrap();
3693 assert_eq!(state.selections.len(), 1);
3694 let local_selections = &state.selections[0].1;
3695 assert_eq!(local_selections.len(), 2);
3696
3697 // moves cursor on excerpt boundary back a line
3698 // and doesn't allow selection to bleed through
3699 assert_eq!(
3700 local_selections[0].range,
3701 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3702 );
3703 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3704 // moves cursor on buffer boundary back two lines
3705 // and doesn't allow selection to bleed through
3706 assert_eq!(
3707 local_selections[1].range,
3708 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3709 );
3710 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3711 }
3712
3713 #[gpui::test]
3714 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3715 init_test(cx, |_| {});
3716
3717 let window = cx.add_window(|cx| {
3718 let buffer = MultiBuffer::build_simple("", cx);
3719 Editor::new(EditorMode::Full, buffer, None, cx)
3720 });
3721 let editor = window.root(cx).unwrap();
3722 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3723 window
3724 .update(cx, |editor, cx| {
3725 editor.set_placeholder_text("hello", cx);
3726 editor.insert_blocks(
3727 [BlockProperties {
3728 style: BlockStyle::Fixed,
3729 disposition: BlockDisposition::Above,
3730 height: 3,
3731 position: Anchor::min(),
3732 render: Arc::new(|_| div().into_any()),
3733 }],
3734 None,
3735 cx,
3736 );
3737
3738 // Blur the editor so that it displays placeholder text.
3739 cx.blur();
3740 })
3741 .unwrap();
3742
3743 let mut element = EditorElement::new(&editor, style);
3744 let state = cx
3745 .update_window(window.into(), |view, cx| {
3746 cx.with_element_context(|cx| {
3747 cx.with_view_id(view.entity_id(), |cx| {
3748 element.compute_layout(
3749 Bounds {
3750 origin: point(px(500.), px(500.)),
3751 size: size(px(500.), px(500.)),
3752 },
3753 cx,
3754 )
3755 })
3756 })
3757 })
3758 .unwrap();
3759 let size = state.position_map.size;
3760
3761 assert_eq!(state.position_map.line_layouts.len(), 4);
3762 assert_eq!(
3763 state
3764 .line_numbers
3765 .iter()
3766 .map(Option::is_some)
3767 .collect::<Vec<_>>(),
3768 &[false, false, false, true]
3769 );
3770
3771 // Don't panic.
3772 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3773 cx.update_window(window.into(), |_, cx| {
3774 cx.with_element_context(|cx| element.paint(bounds, &mut (), cx))
3775 })
3776 .unwrap()
3777 }
3778
3779 #[gpui::test]
3780 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3781 const TAB_SIZE: u32 = 4;
3782
3783 let input_text = "\t \t|\t| a b";
3784 let expected_invisibles = vec![
3785 Invisible::Tab {
3786 line_start_offset: 0,
3787 },
3788 Invisible::Whitespace {
3789 line_offset: TAB_SIZE as usize,
3790 },
3791 Invisible::Tab {
3792 line_start_offset: TAB_SIZE as usize + 1,
3793 },
3794 Invisible::Tab {
3795 line_start_offset: TAB_SIZE as usize * 2 + 1,
3796 },
3797 Invisible::Whitespace {
3798 line_offset: TAB_SIZE as usize * 3 + 1,
3799 },
3800 Invisible::Whitespace {
3801 line_offset: TAB_SIZE as usize * 3 + 3,
3802 },
3803 ];
3804 assert_eq!(
3805 expected_invisibles.len(),
3806 input_text
3807 .chars()
3808 .filter(|initial_char| initial_char.is_whitespace())
3809 .count(),
3810 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3811 );
3812
3813 init_test(cx, |s| {
3814 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3815 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3816 });
3817
3818 let actual_invisibles =
3819 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3820
3821 assert_eq!(expected_invisibles, actual_invisibles);
3822 }
3823
3824 #[gpui::test]
3825 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3826 init_test(cx, |s| {
3827 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3828 s.defaults.tab_size = NonZeroU32::new(4);
3829 });
3830
3831 for editor_mode_without_invisibles in [
3832 EditorMode::SingleLine,
3833 EditorMode::AutoHeight { max_lines: 100 },
3834 ] {
3835 let invisibles = collect_invisibles_from_new_editor(
3836 cx,
3837 editor_mode_without_invisibles,
3838 "\t\t\t| | a b",
3839 px(500.0),
3840 );
3841 assert!(invisibles.is_empty(),
3842 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3843 }
3844 }
3845
3846 #[gpui::test]
3847 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3848 let tab_size = 4;
3849 let input_text = "a\tbcd ".repeat(9);
3850 let repeated_invisibles = [
3851 Invisible::Tab {
3852 line_start_offset: 1,
3853 },
3854 Invisible::Whitespace {
3855 line_offset: tab_size as usize + 3,
3856 },
3857 Invisible::Whitespace {
3858 line_offset: tab_size as usize + 4,
3859 },
3860 Invisible::Whitespace {
3861 line_offset: tab_size as usize + 5,
3862 },
3863 ];
3864 let expected_invisibles = std::iter::once(repeated_invisibles)
3865 .cycle()
3866 .take(9)
3867 .flatten()
3868 .collect::<Vec<_>>();
3869 assert_eq!(
3870 expected_invisibles.len(),
3871 input_text
3872 .chars()
3873 .filter(|initial_char| initial_char.is_whitespace())
3874 .count(),
3875 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3876 );
3877 info!("Expected invisibles: {expected_invisibles:?}");
3878
3879 init_test(cx, |_| {});
3880
3881 // Put the same string with repeating whitespace pattern into editors of various size,
3882 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3883 let resize_step = 10.0;
3884 let mut editor_width = 200.0;
3885 while editor_width <= 1000.0 {
3886 update_test_language_settings(cx, |s| {
3887 s.defaults.tab_size = NonZeroU32::new(tab_size);
3888 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3889 s.defaults.preferred_line_length = Some(editor_width as u32);
3890 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3891 });
3892
3893 let actual_invisibles = collect_invisibles_from_new_editor(
3894 cx,
3895 EditorMode::Full,
3896 &input_text,
3897 px(editor_width),
3898 );
3899
3900 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3901 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3902 let mut i = 0;
3903 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3904 i = actual_index;
3905 match expected_invisibles.get(i) {
3906 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3907 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3908 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3909 _ => {
3910 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3911 }
3912 },
3913 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3914 }
3915 }
3916 let missing_expected_invisibles = &expected_invisibles[i + 1..];
3917 assert!(
3918 missing_expected_invisibles.is_empty(),
3919 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3920 );
3921
3922 editor_width += resize_step;
3923 }
3924 }
3925
3926 fn collect_invisibles_from_new_editor(
3927 cx: &mut TestAppContext,
3928 editor_mode: EditorMode,
3929 input_text: &str,
3930 editor_width: Pixels,
3931 ) -> Vec<Invisible> {
3932 info!(
3933 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
3934 editor_width.0
3935 );
3936 let window = cx.add_window(|cx| {
3937 let buffer = MultiBuffer::build_simple(&input_text, cx);
3938 Editor::new(editor_mode, buffer, None, cx)
3939 });
3940 let editor = window.root(cx).unwrap();
3941 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3942 let mut element = EditorElement::new(&editor, style);
3943 window
3944 .update(cx, |editor, cx| {
3945 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3946 editor.set_wrap_width(Some(editor_width), cx);
3947 })
3948 .unwrap();
3949 let layout_state = cx
3950 .update_window(window.into(), |_, cx| {
3951 cx.with_element_context(|cx| {
3952 element.compute_layout(
3953 Bounds {
3954 origin: point(px(500.), px(500.)),
3955 size: size(px(500.), px(500.)),
3956 },
3957 cx,
3958 )
3959 })
3960 })
3961 .unwrap();
3962
3963 layout_state
3964 .position_map
3965 .line_layouts
3966 .iter()
3967 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3968 .flatten()
3969 .cloned()
3970 .collect()
3971 }
3972}
3973
3974pub fn register_action<T: Action>(
3975 view: &View<Editor>,
3976 cx: &mut WindowContext,
3977 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
3978) {
3979 let view = view.clone();
3980 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
3981 let action = action.downcast_ref().unwrap();
3982 if phase == DispatchPhase::Bubble {
3983 view.update(cx, |editor, cx| {
3984 listener(editor, action, cx);
3985 })
3986 }
3987 })
3988}
3989
3990fn compute_auto_height_layout(
3991 editor: &mut Editor,
3992 max_lines: usize,
3993 max_line_number_width: Pixels,
3994 known_dimensions: Size<Option<Pixels>>,
3995 cx: &mut ViewContext<Editor>,
3996) -> Option<Size<Pixels>> {
3997 let width = known_dimensions.width?;
3998 if let Some(height) = known_dimensions.height {
3999 return Some(size(width, height));
4000 }
4001
4002 let style = editor.style.as_ref().unwrap();
4003 let font_id = cx.text_system().resolve_font(&style.text.font());
4004 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4005 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4006 let em_width = cx
4007 .text_system()
4008 .typographic_bounds(font_id, font_size, 'm')
4009 .unwrap()
4010 .size
4011 .width;
4012
4013 let mut snapshot = editor.snapshot(cx);
4014 let gutter_dimensions =
4015 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4016
4017 editor.gutter_width = gutter_dimensions.width;
4018 let text_width = width - gutter_dimensions.width;
4019 let overscroll = size(em_width, px(0.));
4020
4021 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4022 if editor.set_wrap_width(Some(editor_width), cx) {
4023 snapshot = editor.snapshot(cx);
4024 }
4025
4026 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4027 let height = scroll_height
4028 .max(line_height)
4029 .min(line_height * max_lines as f32);
4030
4031 Some(size(width, height))
4032}