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 lsp::DiagnosticSeverity;
39use multi_buffer::Anchor;
40use project::{
41 project_settings::{GitGutterSetting, ProjectSettings},
42 ProjectPath,
43};
44use settings::Settings;
45use smallvec::SmallVec;
46use std::{
47 any::TypeId,
48 borrow::Cow,
49 cmp::{self, Ordering},
50 fmt::Write,
51 iter,
52 ops::Range,
53 sync::Arc,
54};
55use sum_tree::Bias;
56use theme::{ActiveTheme, PlayerColor};
57use ui::prelude::*;
58use ui::{h_flex, ButtonLike, ButtonStyle, IconButton, Tooltip};
59use util::ResultExt;
60use workspace::item::Item;
61
62struct SelectionLayout {
63 head: DisplayPoint,
64 cursor_shape: CursorShape,
65 is_newest: bool,
66 is_local: bool,
67 range: Range<DisplayPoint>,
68 active_rows: Range<u32>,
69 user_name: Option<SharedString>,
70}
71
72impl SelectionLayout {
73 fn new<T: ToPoint + ToDisplayPoint + Clone>(
74 selection: Selection<T>,
75 line_mode: bool,
76 cursor_shape: CursorShape,
77 map: &DisplaySnapshot,
78 is_newest: bool,
79 is_local: bool,
80 user_name: Option<SharedString>,
81 ) -> Self {
82 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
83 let display_selection = point_selection.map(|p| p.to_display_point(map));
84 let mut range = display_selection.range();
85 let mut head = display_selection.head();
86 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
87 ..map.next_line_boundary(point_selection.end).1.row();
88
89 // vim visual line mode
90 if line_mode {
91 let point_range = map.expand_to_line(point_selection.range());
92 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
93 }
94
95 // any vim visual mode (including line mode)
96 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
97 if head.column() > 0 {
98 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
99 } else if head.row() > 0 && head != map.max_point() {
100 head = map.clip_point(
101 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
102 Bias::Left,
103 );
104 // updating range.end is a no-op unless you're cursor is
105 // on the newline containing a multi-buffer divider
106 // in which case the clip_point may have moved the head up
107 // an additional row.
108 range.end = DisplayPoint::new(head.row() + 1, 0);
109 active_rows.end = head.row();
110 }
111 }
112
113 Self {
114 head,
115 cursor_shape,
116 is_newest,
117 is_local,
118 range,
119 active_rows,
120 user_name,
121 }
122 }
123}
124
125pub struct EditorElement {
126 editor: View<Editor>,
127 style: EditorStyle,
128}
129
130impl EditorElement {
131 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
132 Self {
133 editor: editor.clone(),
134 style,
135 }
136 }
137
138 fn register_actions(&self, cx: &mut WindowContext) {
139 let view = &self.editor;
140 view.update(cx, |editor, cx| {
141 for action in editor.editor_actions.iter() {
142 (action)(cx)
143 }
144 });
145
146 crate::rust_analyzer_ext::apply_related_actions(view, cx);
147 register_action(view, cx, Editor::move_left);
148 register_action(view, cx, Editor::move_right);
149 register_action(view, cx, Editor::move_down);
150 register_action(view, cx, Editor::move_up);
151 register_action(view, cx, Editor::cancel);
152 register_action(view, cx, Editor::newline);
153 register_action(view, cx, Editor::newline_above);
154 register_action(view, cx, Editor::newline_below);
155 register_action(view, cx, Editor::backspace);
156 register_action(view, cx, Editor::delete);
157 register_action(view, cx, Editor::tab);
158 register_action(view, cx, Editor::tab_prev);
159 register_action(view, cx, Editor::indent);
160 register_action(view, cx, Editor::outdent);
161 register_action(view, cx, Editor::delete_line);
162 register_action(view, cx, Editor::join_lines);
163 register_action(view, cx, Editor::sort_lines_case_sensitive);
164 register_action(view, cx, Editor::sort_lines_case_insensitive);
165 register_action(view, cx, Editor::reverse_lines);
166 register_action(view, cx, Editor::shuffle_lines);
167 register_action(view, cx, Editor::convert_to_upper_case);
168 register_action(view, cx, Editor::convert_to_lower_case);
169 register_action(view, cx, Editor::convert_to_title_case);
170 register_action(view, cx, Editor::convert_to_snake_case);
171 register_action(view, cx, Editor::convert_to_kebab_case);
172 register_action(view, cx, Editor::convert_to_upper_camel_case);
173 register_action(view, cx, Editor::convert_to_lower_camel_case);
174 register_action(view, cx, Editor::delete_to_previous_word_start);
175 register_action(view, cx, Editor::delete_to_previous_subword_start);
176 register_action(view, cx, Editor::delete_to_next_word_end);
177 register_action(view, cx, Editor::delete_to_next_subword_end);
178 register_action(view, cx, Editor::delete_to_beginning_of_line);
179 register_action(view, cx, Editor::delete_to_end_of_line);
180 register_action(view, cx, Editor::cut_to_end_of_line);
181 register_action(view, cx, Editor::duplicate_line);
182 register_action(view, cx, Editor::move_line_up);
183 register_action(view, cx, Editor::move_line_down);
184 register_action(view, cx, Editor::transpose);
185 register_action(view, cx, Editor::cut);
186 register_action(view, cx, Editor::copy);
187 register_action(view, cx, Editor::paste);
188 register_action(view, cx, Editor::undo);
189 register_action(view, cx, Editor::redo);
190 register_action(view, cx, Editor::move_page_up);
191 register_action(view, cx, Editor::move_page_down);
192 register_action(view, cx, Editor::next_screen);
193 register_action(view, cx, Editor::scroll_cursor_top);
194 register_action(view, cx, Editor::scroll_cursor_center);
195 register_action(view, cx, Editor::scroll_cursor_bottom);
196 register_action(view, cx, |editor, _: &LineDown, cx| {
197 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
198 });
199 register_action(view, cx, |editor, _: &LineUp, cx| {
200 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
201 });
202 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
203 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
204 });
205 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
206 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
207 });
208 register_action(view, cx, |editor, _: &PageDown, cx| {
209 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
210 });
211 register_action(view, cx, |editor, _: &PageUp, cx| {
212 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
213 });
214 register_action(view, cx, Editor::move_to_previous_word_start);
215 register_action(view, cx, Editor::move_to_previous_subword_start);
216 register_action(view, cx, Editor::move_to_next_word_end);
217 register_action(view, cx, Editor::move_to_next_subword_end);
218 register_action(view, cx, Editor::move_to_beginning_of_line);
219 register_action(view, cx, Editor::move_to_end_of_line);
220 register_action(view, cx, Editor::move_to_start_of_paragraph);
221 register_action(view, cx, Editor::move_to_end_of_paragraph);
222 register_action(view, cx, Editor::move_to_beginning);
223 register_action(view, cx, Editor::move_to_end);
224 register_action(view, cx, Editor::select_up);
225 register_action(view, cx, Editor::select_down);
226 register_action(view, cx, Editor::select_left);
227 register_action(view, cx, Editor::select_right);
228 register_action(view, cx, Editor::select_to_previous_word_start);
229 register_action(view, cx, Editor::select_to_previous_subword_start);
230 register_action(view, cx, Editor::select_to_next_word_end);
231 register_action(view, cx, Editor::select_to_next_subword_end);
232 register_action(view, cx, Editor::select_to_beginning_of_line);
233 register_action(view, cx, Editor::select_to_end_of_line);
234 register_action(view, cx, Editor::select_to_start_of_paragraph);
235 register_action(view, cx, Editor::select_to_end_of_paragraph);
236 register_action(view, cx, Editor::select_to_beginning);
237 register_action(view, cx, Editor::select_to_end);
238 register_action(view, cx, Editor::select_all);
239 register_action(view, cx, |editor, action, cx| {
240 editor.select_all_matches(action, cx).log_err();
241 });
242 register_action(view, cx, Editor::select_line);
243 register_action(view, cx, Editor::split_selection_into_lines);
244 register_action(view, cx, Editor::add_selection_above);
245 register_action(view, cx, Editor::add_selection_below);
246 register_action(view, cx, |editor, action, cx| {
247 editor.select_next(action, cx).log_err();
248 });
249 register_action(view, cx, |editor, action, cx| {
250 editor.select_previous(action, cx).log_err();
251 });
252 register_action(view, cx, Editor::toggle_comments);
253 register_action(view, cx, Editor::select_larger_syntax_node);
254 register_action(view, cx, Editor::select_smaller_syntax_node);
255 register_action(view, cx, Editor::move_to_enclosing_bracket);
256 register_action(view, cx, Editor::undo_selection);
257 register_action(view, cx, Editor::redo_selection);
258 register_action(view, cx, Editor::go_to_diagnostic);
259 register_action(view, cx, Editor::go_to_prev_diagnostic);
260 register_action(view, cx, Editor::go_to_hunk);
261 register_action(view, cx, Editor::go_to_prev_hunk);
262 register_action(view, cx, Editor::go_to_definition);
263 register_action(view, cx, Editor::go_to_definition_split);
264 register_action(view, cx, Editor::go_to_type_definition);
265 register_action(view, cx, Editor::go_to_type_definition_split);
266 register_action(view, cx, Editor::fold);
267 register_action(view, cx, Editor::fold_at);
268 register_action(view, cx, Editor::unfold_lines);
269 register_action(view, cx, Editor::unfold_at);
270 register_action(view, cx, Editor::fold_selected_ranges);
271 register_action(view, cx, Editor::show_completions);
272 register_action(view, cx, Editor::toggle_code_actions);
273 register_action(view, cx, Editor::open_excerpts);
274 register_action(view, cx, Editor::toggle_soft_wrap);
275 register_action(view, cx, Editor::toggle_inlay_hints);
276 register_action(view, cx, hover_popover::hover);
277 register_action(view, cx, Editor::reveal_in_finder);
278 register_action(view, cx, Editor::copy_path);
279 register_action(view, cx, Editor::copy_relative_path);
280 register_action(view, cx, Editor::copy_highlight_json);
281 register_action(view, cx, Editor::copy_permalink_to_line);
282 register_action(view, cx, |editor, action, cx| {
283 if let Some(task) = editor.format(action, cx) {
284 task.detach_and_log_err(cx);
285 } else {
286 cx.propagate();
287 }
288 });
289 register_action(view, cx, Editor::restart_language_server);
290 register_action(view, cx, Editor::show_character_palette);
291 register_action(view, cx, |editor, action, cx| {
292 if let Some(task) = editor.confirm_completion(action, cx) {
293 task.detach_and_log_err(cx);
294 } else {
295 cx.propagate();
296 }
297 });
298 register_action(view, cx, |editor, action, cx| {
299 if let Some(task) = editor.confirm_code_action(action, cx) {
300 task.detach_and_log_err(cx);
301 } else {
302 cx.propagate();
303 }
304 });
305 register_action(view, cx, |editor, action, cx| {
306 if let Some(task) = editor.rename(action, cx) {
307 task.detach_and_log_err(cx);
308 } else {
309 cx.propagate();
310 }
311 });
312 register_action(view, cx, |editor, action, cx| {
313 if let Some(task) = editor.confirm_rename(action, cx) {
314 task.detach_and_log_err(cx);
315 } else {
316 cx.propagate();
317 }
318 });
319 register_action(view, cx, |editor, action, cx| {
320 if let Some(task) = editor.find_all_references(action, cx) {
321 task.detach_and_log_err(cx);
322 } else {
323 cx.propagate();
324 }
325 });
326 register_action(view, cx, Editor::next_copilot_suggestion);
327 register_action(view, cx, Editor::previous_copilot_suggestion);
328 register_action(view, cx, Editor::copilot_suggest);
329 register_action(view, cx, Editor::context_menu_first);
330 register_action(view, cx, Editor::context_menu_prev);
331 register_action(view, cx, Editor::context_menu_next);
332 register_action(view, cx, Editor::context_menu_last);
333 register_action(view, cx, Editor::display_cursor_names);
334 }
335
336 fn register_key_listeners(&self, cx: &mut ElementContext) {
337 cx.on_key_event({
338 let editor = self.editor.clone();
339 move |event: &ModifiersChangedEvent, phase, cx| {
340 if phase != DispatchPhase::Bubble {
341 return;
342 }
343
344 if editor.update(cx, |editor, cx| Self::modifiers_changed(editor, event, cx)) {
345 cx.stop_propagation();
346 }
347 }
348 });
349 }
350
351 pub(crate) fn modifiers_changed(
352 editor: &mut Editor,
353 event: &ModifiersChangedEvent,
354 cx: &mut ViewContext<Editor>,
355 ) -> bool {
356 let pending_selection = editor.has_pending_selection();
357
358 if let Some(point) = &editor.link_go_to_definition_state.last_trigger_point {
359 if event.command && !pending_selection {
360 let point = point.clone();
361 let snapshot = editor.snapshot(cx);
362 let kind = point.definition_kind(event.shift);
363
364 show_link_definition(kind, editor, point, snapshot, cx);
365 return false;
366 }
367 }
368
369 {
370 if editor.link_go_to_definition_state.symbol_range.is_some()
371 || !editor.link_go_to_definition_state.definitions.is_empty()
372 {
373 editor.link_go_to_definition_state.symbol_range.take();
374 editor.link_go_to_definition_state.definitions.clear();
375 cx.notify();
376 }
377
378 editor.link_go_to_definition_state.task = None;
379
380 editor.clear_highlights::<LinkGoToDefinitionState>(cx);
381 }
382
383 false
384 }
385
386 fn mouse_left_down(
387 editor: &mut Editor,
388 event: &MouseDownEvent,
389 position_map: &PositionMap,
390 text_bounds: Bounds<Pixels>,
391 gutter_bounds: Bounds<Pixels>,
392 stacking_order: &StackingOrder,
393 cx: &mut ViewContext<Editor>,
394 ) {
395 let mut click_count = event.click_count;
396 let modifiers = event.modifiers;
397
398 if cx.default_prevented() {
399 return;
400 } else if gutter_bounds.contains(&event.position) {
401 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
402 } else if !text_bounds.contains(&event.position) {
403 return;
404 }
405 if !cx.was_top_layer(&event.position, stacking_order) {
406 return;
407 }
408
409 let point_for_position = position_map.point_for_position(text_bounds, event.position);
410 let position = point_for_position.previous_valid;
411 if modifiers.shift && modifiers.alt {
412 editor.select(
413 SelectPhase::BeginColumnar {
414 position,
415 goal_column: point_for_position.exact_unclipped.column(),
416 },
417 cx,
418 );
419 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
420 editor.select(
421 SelectPhase::Extend {
422 position,
423 click_count,
424 },
425 cx,
426 );
427 } else {
428 editor.select(
429 SelectPhase::Begin {
430 position,
431 add: modifiers.alt,
432 click_count,
433 },
434 cx,
435 );
436 }
437
438 cx.stop_propagation();
439 }
440
441 fn mouse_right_down(
442 editor: &mut Editor,
443 event: &MouseDownEvent,
444 position_map: &PositionMap,
445 text_bounds: Bounds<Pixels>,
446 cx: &mut ViewContext<Editor>,
447 ) {
448 if !text_bounds.contains(&event.position) {
449 return;
450 }
451 let point_for_position = position_map.point_for_position(text_bounds, event.position);
452 mouse_context_menu::deploy_context_menu(
453 editor,
454 event.position,
455 point_for_position.previous_valid,
456 cx,
457 );
458 cx.stop_propagation();
459 }
460
461 fn mouse_up(
462 editor: &mut Editor,
463 event: &MouseUpEvent,
464 position_map: &PositionMap,
465 text_bounds: Bounds<Pixels>,
466 interactive_bounds: &InteractiveBounds,
467 stacking_order: &StackingOrder,
468 cx: &mut ViewContext<Editor>,
469 ) {
470 let end_selection = editor.has_pending_selection();
471 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
472
473 if end_selection {
474 editor.select(SelectPhase::End, cx);
475 }
476
477 if interactive_bounds.visibly_contains(&event.position, cx)
478 && !pending_nonempty_selections
479 && event.modifiers.command
480 && text_bounds.contains(&event.position)
481 && cx.was_top_layer(&event.position, stacking_order)
482 {
483 let point = position_map.point_for_position(text_bounds, event.position);
484 let could_be_inlay = point.as_valid().is_none();
485 let split = event.modifiers.alt;
486 if event.modifiers.shift || could_be_inlay {
487 go_to_fetched_type_definition(editor, point, split, cx);
488 } else {
489 go_to_fetched_definition(editor, point, split, cx);
490 }
491
492 cx.stop_propagation();
493 } else if end_selection {
494 cx.stop_propagation();
495 }
496 }
497
498 fn mouse_dragged(
499 editor: &mut Editor,
500 event: &MouseMoveEvent,
501 position_map: &PositionMap,
502 text_bounds: Bounds<Pixels>,
503 _gutter_bounds: Bounds<Pixels>,
504 _stacking_order: &StackingOrder,
505 cx: &mut ViewContext<Editor>,
506 ) {
507 if !editor.has_pending_selection() {
508 return;
509 }
510
511 let point_for_position = position_map.point_for_position(text_bounds, event.position);
512 let mut scroll_delta = gpui::Point::<f32>::default();
513 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
514 let top = text_bounds.origin.y + vertical_margin;
515 let bottom = text_bounds.lower_left().y - vertical_margin;
516 if event.position.y < top {
517 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
518 }
519 if event.position.y > bottom {
520 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
521 }
522
523 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
524 let left = text_bounds.origin.x + horizontal_margin;
525 let right = text_bounds.upper_right().x - horizontal_margin;
526 if event.position.x < left {
527 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
528 }
529 if event.position.x > right {
530 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
531 }
532
533 editor.select(
534 SelectPhase::Update {
535 position: point_for_position.previous_valid,
536 goal_column: point_for_position.exact_unclipped.column(),
537 scroll_delta,
538 },
539 cx,
540 );
541 }
542
543 fn mouse_moved(
544 editor: &mut Editor,
545 event: &MouseMoveEvent,
546 position_map: &PositionMap,
547 text_bounds: Bounds<Pixels>,
548 gutter_bounds: Bounds<Pixels>,
549 stacking_order: &StackingOrder,
550 cx: &mut ViewContext<Editor>,
551 ) {
552 let modifiers = event.modifiers;
553 let text_hovered = text_bounds.contains(&event.position);
554 let gutter_hovered = gutter_bounds.contains(&event.position);
555 let was_top = cx.was_top_layer(&event.position, stacking_order);
556
557 editor.set_gutter_hovered(gutter_hovered, cx);
558
559 // Don't trigger hover popover if mouse is hovering over context menu
560 if text_hovered && was_top {
561 let point_for_position = position_map.point_for_position(text_bounds, event.position);
562
563 match point_for_position.as_valid() {
564 Some(point) => {
565 update_go_to_definition_link(
566 editor,
567 Some(GoToDefinitionTrigger::Text(point)),
568 modifiers.command,
569 modifiers.shift,
570 cx,
571 );
572 hover_at(editor, Some(point), cx);
573 Self::update_visible_cursor(editor, point, position_map, cx);
574 }
575 None => {
576 update_inlay_link_and_hover_points(
577 &position_map.snapshot,
578 point_for_position,
579 editor,
580 modifiers.command,
581 modifiers.shift,
582 cx,
583 );
584 }
585 }
586 } else {
587 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
588 hover_at(editor, None, cx);
589 if gutter_hovered && was_top {
590 cx.stop_propagation();
591 }
592 }
593 }
594
595 fn update_visible_cursor(
596 editor: &mut Editor,
597 point: DisplayPoint,
598 position_map: &PositionMap,
599 cx: &mut ViewContext<Editor>,
600 ) {
601 let snapshot = &position_map.snapshot;
602 let Some(hub) = editor.collaboration_hub() else {
603 return;
604 };
605 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
606 ..DisplayPoint::new(
607 point.row(),
608 (point.column() + 1).min(snapshot.line_len(point.row())),
609 );
610
611 let range = snapshot
612 .buffer_snapshot
613 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
614 ..snapshot
615 .buffer_snapshot
616 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
617
618 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
619 return;
620 };
621 let key = crate::HoveredCursor {
622 replica_id: selection.replica_id,
623 selection_id: selection.selection.id,
624 };
625 editor.hovered_cursors.insert(
626 key.clone(),
627 cx.spawn(|editor, mut cx| async move {
628 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
629 editor
630 .update(&mut cx, |editor, cx| {
631 editor.hovered_cursors.remove(&key);
632 cx.notify();
633 })
634 .ok();
635 }),
636 );
637 cx.notify()
638 }
639
640 fn paint_background(
641 &self,
642 gutter_bounds: Bounds<Pixels>,
643 text_bounds: Bounds<Pixels>,
644 layout: &LayoutState,
645 cx: &mut ElementContext,
646 ) {
647 let bounds = gutter_bounds.union(&text_bounds);
648 let scroll_top =
649 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
650 let gutter_bg = cx.theme().colors().editor_gutter_background;
651 cx.paint_quad(fill(gutter_bounds, gutter_bg));
652 cx.paint_quad(fill(text_bounds, self.style.background));
653
654 if let EditorMode::Full = layout.mode {
655 let mut active_rows = layout.active_rows.iter().peekable();
656 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
657 let mut end_row = *start_row;
658 while active_rows.peek().map_or(false, |r| {
659 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
660 }) {
661 active_rows.next().unwrap();
662 end_row += 1;
663 }
664
665 if !contains_non_empty_selection {
666 let origin = point(
667 bounds.origin.x,
668 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
669 - scroll_top,
670 );
671 let size = size(
672 bounds.size.width,
673 layout.position_map.line_height * (end_row - start_row + 1) as f32,
674 );
675 let active_line_bg = cx.theme().colors().editor_active_line_background;
676 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
677 }
678 }
679
680 if let Some(highlighted_rows) = &layout.highlighted_rows {
681 let origin = point(
682 bounds.origin.x,
683 bounds.origin.y
684 + (layout.position_map.line_height * highlighted_rows.start as f32)
685 - scroll_top,
686 );
687 let size = size(
688 bounds.size.width,
689 layout.position_map.line_height * highlighted_rows.len() as f32,
690 );
691 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
692 cx.paint_quad(fill(Bounds { origin, size }, highlighted_line_bg));
693 }
694
695 let scroll_left =
696 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
697
698 for (wrap_position, active) in layout.wrap_guides.iter() {
699 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
700 - scroll_left;
701
702 if x < text_bounds.origin.x
703 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
704 {
705 continue;
706 }
707
708 let color = if *active {
709 cx.theme().colors().editor_active_wrap_guide
710 } else {
711 cx.theme().colors().editor_wrap_guide
712 };
713 cx.paint_quad(fill(
714 Bounds {
715 origin: point(x, text_bounds.origin.y),
716 size: size(px(1.), text_bounds.size.height),
717 },
718 color,
719 ));
720 }
721 }
722 }
723
724 fn paint_gutter(
725 &mut self,
726 bounds: Bounds<Pixels>,
727 layout: &mut LayoutState,
728 cx: &mut ElementContext,
729 ) {
730 let line_height = layout.position_map.line_height;
731
732 let scroll_position = layout.position_map.snapshot.scroll_position();
733 let scroll_top = scroll_position.y * line_height;
734
735 let show_gutter = matches!(
736 ProjectSettings::get_global(cx).git.git_gutter,
737 Some(GitGutterSetting::TrackedFiles)
738 );
739
740 if show_gutter {
741 Self::paint_diff_hunks(bounds, layout, cx);
742 }
743
744 for (ix, line) in layout.line_numbers.iter().enumerate() {
745 if let Some(line) = line {
746 let line_origin = bounds.origin
747 + point(
748 bounds.size.width - line.width - layout.gutter_padding,
749 ix as f32 * line_height - (scroll_top % line_height),
750 );
751
752 line.paint(line_origin, line_height, cx).log_err();
753 }
754 }
755
756 cx.with_z_index(1, |cx| {
757 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
758 if let Some(fold_indicator) = fold_indicator {
759 let mut fold_indicator = fold_indicator.into_any_element();
760 let available_space = size(
761 AvailableSpace::MinContent,
762 AvailableSpace::Definite(line_height * 0.55),
763 );
764 let fold_indicator_size = fold_indicator.measure(available_space, cx);
765
766 let position = point(
767 bounds.size.width - layout.gutter_padding,
768 ix as f32 * line_height - (scroll_top % line_height),
769 );
770 let centering_offset = point(
771 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width)
772 / 2.,
773 (line_height - fold_indicator_size.height) / 2.,
774 );
775 let origin = bounds.origin + position + centering_offset;
776 fold_indicator.draw(origin, available_space, cx);
777 }
778 }
779
780 if let Some(indicator) = layout.code_actions_indicator.take() {
781 let mut button = indicator.button.into_any_element();
782 let available_space = size(
783 AvailableSpace::MinContent,
784 AvailableSpace::Definite(line_height),
785 );
786 let indicator_size = button.measure(available_space, cx);
787
788 let mut x = Pixels::ZERO;
789 let mut y = indicator.row as f32 * line_height - scroll_top;
790 // Center indicator.
791 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
792 y += (line_height - indicator_size.height) / 2.;
793
794 button.draw(bounds.origin + point(x, y), available_space, cx);
795 }
796 });
797 }
798
799 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut ElementContext) {
800 let line_height = layout.position_map.line_height;
801
802 let scroll_position = layout.position_map.snapshot.scroll_position();
803 let scroll_top = scroll_position.y * line_height;
804
805 for hunk in &layout.display_hunks {
806 let (display_row_range, status) = match hunk {
807 //TODO: This rendering is entirely a horrible hack
808 &DisplayDiffHunk::Folded { display_row: row } => {
809 let start_y = row as f32 * line_height - scroll_top;
810 let end_y = start_y + line_height;
811
812 let width = 0.275 * line_height;
813 let highlight_origin = bounds.origin + point(-width, start_y);
814 let highlight_size = size(width * 2., end_y - start_y);
815 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
816 cx.paint_quad(quad(
817 highlight_bounds,
818 Corners::all(1. * line_height),
819 cx.theme().status().modified,
820 Edges::default(),
821 transparent_black(),
822 ));
823
824 continue;
825 }
826
827 DisplayDiffHunk::Unfolded {
828 display_row_range,
829 status,
830 } => (display_row_range, status),
831 };
832
833 let color = match status {
834 DiffHunkStatus::Added => cx.theme().status().created,
835 DiffHunkStatus::Modified => cx.theme().status().modified,
836
837 //TODO: This rendering is entirely a horrible hack
838 DiffHunkStatus::Removed => {
839 let row = display_row_range.start;
840
841 let offset = line_height / 2.;
842 let start_y = row as f32 * line_height - offset - scroll_top;
843 let end_y = start_y + line_height;
844
845 let width = 0.275 * line_height;
846 let highlight_origin = bounds.origin + point(-width, start_y);
847 let highlight_size = size(width * 2., end_y - start_y);
848 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
849 cx.paint_quad(quad(
850 highlight_bounds,
851 Corners::all(1. * line_height),
852 cx.theme().status().deleted,
853 Edges::default(),
854 transparent_black(),
855 ));
856
857 continue;
858 }
859 };
860
861 let start_row = display_row_range.start;
862 let end_row = display_row_range.end;
863 // If we're in a multibuffer, row range span might include an
864 // excerpt header, so if we were to draw the marker straight away,
865 // the hunk might include the rows of that header.
866 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
867 // Instead, we simply check whether the range we're dealing with includes
868 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
869 let end_row_in_current_excerpt = layout
870 .position_map
871 .snapshot
872 .blocks_in_range(start_row..end_row)
873 .find_map(|(start_row, block)| {
874 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
875 Some(start_row)
876 } else {
877 None
878 }
879 })
880 .unwrap_or(end_row);
881
882 let start_y = start_row as f32 * line_height - scroll_top;
883 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
884
885 let width = 0.275 * line_height;
886 let highlight_origin = bounds.origin + point(-width, start_y);
887 let highlight_size = size(width * 2., end_y - start_y);
888 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
889 cx.paint_quad(quad(
890 highlight_bounds,
891 Corners::all(0.05 * line_height),
892 color,
893 Edges::default(),
894 transparent_black(),
895 ));
896 }
897 }
898
899 fn paint_text(
900 &mut self,
901 text_bounds: Bounds<Pixels>,
902 layout: &mut LayoutState,
903 cx: &mut ElementContext,
904 ) {
905 let start_row = layout.visible_display_row_range.start;
906 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
907 let line_end_overshoot = 0.15 * layout.position_map.line_height;
908 let whitespace_setting = self
909 .editor
910 .read(cx)
911 .buffer
912 .read(cx)
913 .settings_at(0, cx)
914 .show_whitespaces;
915
916 cx.with_content_mask(
917 Some(ContentMask {
918 bounds: text_bounds,
919 }),
920 |cx| {
921 let interactive_text_bounds = InteractiveBounds {
922 bounds: text_bounds,
923 stacking_order: cx.stacking_order().clone(),
924 };
925 if interactive_text_bounds.visibly_contains(&cx.mouse_position(), cx) {
926 if self
927 .editor
928 .read(cx)
929 .link_go_to_definition_state
930 .definitions
931 .is_empty()
932 {
933 cx.set_cursor_style(CursorStyle::IBeam);
934 } else {
935 cx.set_cursor_style(CursorStyle::PointingHand);
936 }
937 }
938
939 let fold_corner_radius = 0.15 * layout.position_map.line_height;
940 cx.with_element_id(Some("folds"), |cx| {
941 let snapshot = &layout.position_map.snapshot;
942
943 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
944 let fold_range = fold.range.clone();
945 let display_range = fold.range.start.to_display_point(&snapshot)
946 ..fold.range.end.to_display_point(&snapshot);
947 debug_assert_eq!(display_range.start.row(), display_range.end.row());
948 let row = display_range.start.row();
949 debug_assert!(row < layout.visible_display_row_range.end);
950 let Some(line_layout) = &layout
951 .position_map
952 .line_layouts
953 .get((row - layout.visible_display_row_range.start) as usize)
954 .map(|l| &l.line)
955 else {
956 continue;
957 };
958
959 let start_x = content_origin.x
960 + line_layout.x_for_index(display_range.start.column() as usize)
961 - layout.position_map.scroll_position.x;
962 let start_y = content_origin.y
963 + row as f32 * layout.position_map.line_height
964 - layout.position_map.scroll_position.y;
965 let end_x = content_origin.x
966 + line_layout.x_for_index(display_range.end.column() as usize)
967 - layout.position_map.scroll_position.x;
968
969 let fold_bounds = Bounds {
970 origin: point(start_x, start_y),
971 size: size(end_x - start_x, layout.position_map.line_height),
972 };
973
974 let fold_background = cx.with_z_index(1, |cx| {
975 div()
976 .id(fold.id)
977 .size_full()
978 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
979 .on_click(cx.listener_for(
980 &self.editor,
981 move |editor: &mut Editor, _, cx| {
982 editor.unfold_ranges(
983 [fold_range.start..fold_range.end],
984 true,
985 false,
986 cx,
987 );
988 cx.stop_propagation();
989 },
990 ))
991 .draw_and_update_state(
992 fold_bounds.origin,
993 fold_bounds.size,
994 cx,
995 |fold_element_state, cx| {
996 if fold_element_state.is_active() {
997 cx.theme().colors().ghost_element_active
998 } else if fold_bounds.contains(&cx.mouse_position()) {
999 cx.theme().colors().ghost_element_hover
1000 } else {
1001 cx.theme().colors().ghost_element_background
1002 }
1003 },
1004 )
1005 });
1006
1007 self.paint_highlighted_range(
1008 display_range.clone(),
1009 fold_background,
1010 fold_corner_radius,
1011 fold_corner_radius * 2.,
1012 layout,
1013 content_origin,
1014 text_bounds,
1015 cx,
1016 );
1017 }
1018 });
1019
1020 for (range, color) in &layout.highlighted_ranges {
1021 self.paint_highlighted_range(
1022 range.clone(),
1023 *color,
1024 Pixels::ZERO,
1025 line_end_overshoot,
1026 layout,
1027 content_origin,
1028 text_bounds,
1029 cx,
1030 );
1031 }
1032
1033 let mut cursors = SmallVec::<[Cursor; 32]>::new();
1034 let corner_radius = 0.15 * layout.position_map.line_height;
1035 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
1036
1037 for (participant_ix, (selection_style, selections)) in
1038 layout.selections.iter().enumerate()
1039 {
1040 for selection in selections.into_iter() {
1041 self.paint_highlighted_range(
1042 selection.range.clone(),
1043 selection_style.selection,
1044 corner_radius,
1045 corner_radius * 2.,
1046 layout,
1047 content_origin,
1048 text_bounds,
1049 cx,
1050 );
1051
1052 if selection.is_local && !selection.range.is_empty() {
1053 invisible_display_ranges.push(selection.range.clone());
1054 }
1055
1056 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
1057 let cursor_position = selection.head;
1058 if layout
1059 .visible_display_row_range
1060 .contains(&cursor_position.row())
1061 {
1062 let cursor_row_layout = &layout.position_map.line_layouts
1063 [(cursor_position.row() - start_row) as usize]
1064 .line;
1065 let cursor_column = cursor_position.column() as usize;
1066
1067 let cursor_character_x =
1068 cursor_row_layout.x_for_index(cursor_column);
1069 let mut block_width = cursor_row_layout
1070 .x_for_index(cursor_column + 1)
1071 - cursor_character_x;
1072 if block_width == Pixels::ZERO {
1073 block_width = layout.position_map.em_width;
1074 }
1075 let block_text = if let CursorShape::Block = selection.cursor_shape
1076 {
1077 layout
1078 .position_map
1079 .snapshot
1080 .chars_at(cursor_position)
1081 .next()
1082 .and_then(|(character, _)| {
1083 let text = if character == '\n' {
1084 SharedString::from(" ")
1085 } else {
1086 SharedString::from(character.to_string())
1087 };
1088 let len = text.len();
1089 cx.text_system()
1090 .shape_line(
1091 text,
1092 cursor_row_layout.font_size,
1093 &[TextRun {
1094 len,
1095 font: self.style.text.font(),
1096 color: self.style.background,
1097 background_color: None,
1098 underline: None,
1099 }],
1100 )
1101 .log_err()
1102 })
1103 } else {
1104 None
1105 };
1106
1107 let x = cursor_character_x - layout.position_map.scroll_position.x;
1108 let y = cursor_position.row() as f32
1109 * layout.position_map.line_height
1110 - layout.position_map.scroll_position.y;
1111 if selection.is_newest {
1112 self.editor.update(cx, |editor, _| {
1113 editor.pixel_position_of_newest_cursor = Some(point(
1114 text_bounds.origin.x + x + block_width / 2.,
1115 text_bounds.origin.y
1116 + y
1117 + layout.position_map.line_height / 2.,
1118 ))
1119 });
1120 }
1121
1122 cursors.push(Cursor {
1123 color: selection_style.cursor,
1124 block_width,
1125 origin: point(x, y),
1126 line_height: layout.position_map.line_height,
1127 shape: selection.cursor_shape,
1128 block_text,
1129 cursor_name: selection.user_name.clone().map(|name| {
1130 CursorName {
1131 string: name,
1132 color: self.style.background,
1133 is_top_row: cursor_position.row() == 0,
1134 z_index: (participant_ix % 256).try_into().unwrap(),
1135 }
1136 }),
1137 });
1138 }
1139 }
1140 }
1141 }
1142
1143 for (ix, line_with_invisibles) in
1144 layout.position_map.line_layouts.iter().enumerate()
1145 {
1146 let row = start_row + ix as u32;
1147 line_with_invisibles.draw(
1148 layout,
1149 row,
1150 content_origin,
1151 whitespace_setting,
1152 &invisible_display_ranges,
1153 cx,
1154 )
1155 }
1156
1157 cx.with_z_index(0, |cx| self.paint_redactions(text_bounds, &layout, cx));
1158
1159 cx.with_z_index(1, |cx| {
1160 for cursor in cursors {
1161 cursor.paint(content_origin, cx);
1162 }
1163 });
1164 },
1165 )
1166 }
1167
1168 fn paint_redactions(
1169 &mut self,
1170 text_bounds: Bounds<Pixels>,
1171 layout: &LayoutState,
1172 cx: &mut ElementContext,
1173 ) {
1174 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
1175 let line_end_overshoot = layout.line_end_overshoot();
1176
1177 // A softer than perfect black
1178 let redaction_color = gpui::rgb(0x0e1111);
1179
1180 for range in layout.redacted_ranges.iter() {
1181 self.paint_highlighted_range(
1182 range.clone(),
1183 redaction_color.into(),
1184 Pixels::ZERO,
1185 line_end_overshoot,
1186 layout,
1187 content_origin,
1188 text_bounds,
1189 cx,
1190 );
1191 }
1192 }
1193
1194 fn paint_overlays(
1195 &mut self,
1196 text_bounds: Bounds<Pixels>,
1197 layout: &mut LayoutState,
1198 cx: &mut ElementContext,
1199 ) {
1200 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
1201 let start_row = layout.visible_display_row_range.start;
1202 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1203 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1204 let context_menu_size = context_menu.measure(available_space, cx);
1205
1206 let cursor_row_layout =
1207 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1208 let x = cursor_row_layout.x_for_index(position.column() as usize)
1209 - layout.position_map.scroll_position.x;
1210 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1211 - layout.position_map.scroll_position.y;
1212 let mut list_origin = content_origin + point(x, y);
1213 let list_width = context_menu_size.width;
1214 let list_height = context_menu_size.height;
1215
1216 // Snap the right edge of the list to the right edge of the window if
1217 // its horizontal bounds overflow.
1218 if list_origin.x + list_width > cx.viewport_size().width {
1219 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1220 }
1221
1222 if list_origin.y + list_height > text_bounds.lower_right().y {
1223 list_origin.y -= layout.position_map.line_height + list_height;
1224 }
1225
1226 cx.break_content_mask(|cx| context_menu.draw(list_origin, available_space, cx));
1227 }
1228
1229 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1230 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1231
1232 // This is safe because we check on layout whether the required row is available
1233 let hovered_row_layout =
1234 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1235
1236 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1237 // height. This is the size we will use to decide whether to render popovers above or below
1238 // the hovered line.
1239 let first_size = hover_popovers[0].measure(available_space, cx);
1240 let height_to_reserve =
1241 first_size.height + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1242
1243 // Compute Hovered Point
1244 let x = hovered_row_layout.x_for_index(position.column() as usize)
1245 - layout.position_map.scroll_position.x;
1246 let y = position.row() as f32 * layout.position_map.line_height
1247 - layout.position_map.scroll_position.y;
1248 let hovered_point = content_origin + point(x, y);
1249
1250 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1251 // There is enough space above. Render popovers above the hovered point
1252 let mut current_y = hovered_point.y;
1253 for mut hover_popover in hover_popovers {
1254 let size = hover_popover.measure(available_space, cx);
1255 let mut popover_origin = point(hovered_point.x, current_y - size.height);
1256
1257 let x_out_of_bounds =
1258 text_bounds.upper_right().x - (popover_origin.x + size.width);
1259 if x_out_of_bounds < Pixels::ZERO {
1260 popover_origin.x = popover_origin.x + x_out_of_bounds;
1261 }
1262
1263 if cx.was_top_layer(&popover_origin, cx.stacking_order()) {
1264 cx.break_content_mask(|cx| {
1265 hover_popover.draw(popover_origin, available_space, cx)
1266 });
1267 }
1268
1269 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1270 }
1271 } else {
1272 // There is not enough space above. Render popovers below the hovered point
1273 let mut current_y = hovered_point.y + layout.position_map.line_height;
1274 for mut hover_popover in hover_popovers {
1275 let size = hover_popover.measure(available_space, cx);
1276 let mut popover_origin = point(hovered_point.x, current_y);
1277
1278 let x_out_of_bounds =
1279 text_bounds.upper_right().x - (popover_origin.x + size.width);
1280 if x_out_of_bounds < Pixels::ZERO {
1281 popover_origin.x = popover_origin.x + x_out_of_bounds;
1282 }
1283
1284 hover_popover.draw(popover_origin, available_space, cx);
1285
1286 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1287 }
1288 }
1289 }
1290
1291 if let Some(mouse_context_menu) = self.editor.read(cx).mouse_context_menu.as_ref() {
1292 let element = overlay()
1293 .position(mouse_context_menu.position)
1294 .child(mouse_context_menu.context_menu.clone())
1295 .anchor(AnchorCorner::TopLeft)
1296 .snap_to_window();
1297 element.into_any().draw(
1298 gpui::Point::default(),
1299 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1300 cx,
1301 );
1302 }
1303 }
1304
1305 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1306 bounds.upper_right().x - self.style.scrollbar_width
1307 }
1308
1309 fn paint_scrollbar(
1310 &mut self,
1311 bounds: Bounds<Pixels>,
1312 layout: &mut LayoutState,
1313 cx: &mut ElementContext,
1314 ) {
1315 if layout.mode != EditorMode::Full {
1316 return;
1317 }
1318
1319 // If a drag took place after we started dragging the scrollbar,
1320 // cancel the scrollbar drag.
1321 if cx.has_active_drag() {
1322 self.editor.update(cx, |editor, cx| {
1323 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1324 });
1325 }
1326
1327 let top = bounds.origin.y;
1328 let bottom = bounds.lower_left().y;
1329 let right = bounds.lower_right().x;
1330 let left = self.scrollbar_left(&bounds);
1331 let row_range = layout.scrollbar_row_range.clone();
1332 let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1333
1334 let mut height = bounds.size.height;
1335 let mut first_row_y_offset = px(0.0);
1336
1337 // Impose a minimum height on the scrollbar thumb
1338 let row_height = height / max_row;
1339 let min_thumb_height = layout.position_map.line_height;
1340 let thumb_height = (row_range.end - row_range.start) * row_height;
1341 if thumb_height < min_thumb_height {
1342 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1343 height -= min_thumb_height - thumb_height;
1344 }
1345
1346 let y_for_row = |row: f32| -> Pixels { top + first_row_y_offset + row * row_height };
1347
1348 let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1349 let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1350 let track_bounds = Bounds::from_corners(point(left, top), point(right, bottom));
1351 let thumb_bounds = Bounds::from_corners(point(left, thumb_top), point(right, thumb_bottom));
1352
1353 if layout.show_scrollbars {
1354 cx.paint_quad(quad(
1355 track_bounds,
1356 Corners::default(),
1357 cx.theme().colors().scrollbar_track_background,
1358 Edges {
1359 top: Pixels::ZERO,
1360 right: Pixels::ZERO,
1361 bottom: Pixels::ZERO,
1362 left: px(1.),
1363 },
1364 cx.theme().colors().scrollbar_track_border,
1365 ));
1366 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1367 if layout.is_singleton && scrollbar_settings.selections {
1368 let start_anchor = Anchor::min();
1369 let end_anchor = Anchor::max();
1370 let background_ranges = self
1371 .editor
1372 .read(cx)
1373 .background_highlight_row_ranges::<BufferSearchHighlights>(
1374 start_anchor..end_anchor,
1375 &layout.position_map.snapshot,
1376 50000,
1377 );
1378 for range in background_ranges {
1379 let start_y = y_for_row(range.start().row() as f32);
1380 let mut end_y = y_for_row(range.end().row() as f32);
1381 if end_y - start_y < px(1.) {
1382 end_y = start_y + px(1.);
1383 }
1384 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1385 cx.paint_quad(quad(
1386 bounds,
1387 Corners::default(),
1388 cx.theme().status().info,
1389 Edges {
1390 top: Pixels::ZERO,
1391 right: px(1.),
1392 bottom: Pixels::ZERO,
1393 left: px(1.),
1394 },
1395 cx.theme().colors().scrollbar_thumb_border,
1396 ));
1397 }
1398 }
1399
1400 if layout.is_singleton && scrollbar_settings.symbols_selections {
1401 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
1402 Anchor::min()..Anchor::max(),
1403 &layout.position_map.snapshot,
1404 cx.theme().colors(),
1405 );
1406 for hunk in selection_ranges {
1407 let start_display = Point::new(hunk.0.start.row(), 0)
1408 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1409 let end_display = Point::new(hunk.0.end.row(), 0)
1410 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1411 let start_y = y_for_row(start_display.row() as f32);
1412 let mut end_y = if hunk.0.start == hunk.0.end {
1413 y_for_row((end_display.row() + 1) as f32)
1414 } else {
1415 y_for_row((end_display.row()) as f32)
1416 };
1417
1418 if end_y - start_y < px(1.) {
1419 end_y = start_y + px(1.);
1420 }
1421 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1422
1423 cx.paint_quad(quad(
1424 bounds,
1425 Corners::default(),
1426 cx.theme().status().info,
1427 Edges {
1428 top: Pixels::ZERO,
1429 right: px(1.),
1430 bottom: Pixels::ZERO,
1431 left: px(1.),
1432 },
1433 cx.theme().colors().scrollbar_thumb_border,
1434 ));
1435 }
1436 }
1437
1438 if layout.is_singleton && scrollbar_settings.git_diff {
1439 for hunk in layout
1440 .position_map
1441 .snapshot
1442 .buffer_snapshot
1443 .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1444 {
1445 let start_display = Point::new(hunk.buffer_range.start, 0)
1446 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1447 let end_display = Point::new(hunk.buffer_range.end, 0)
1448 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1449 let start_y = y_for_row(start_display.row() as f32);
1450 let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1451 y_for_row((end_display.row() + 1) as f32)
1452 } else {
1453 y_for_row((end_display.row()) as f32)
1454 };
1455
1456 if end_y - start_y < px(1.) {
1457 end_y = start_y + px(1.);
1458 }
1459 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1460
1461 let color = match hunk.status() {
1462 DiffHunkStatus::Added => cx.theme().status().created,
1463 DiffHunkStatus::Modified => cx.theme().status().modified,
1464 DiffHunkStatus::Removed => cx.theme().status().deleted,
1465 };
1466 cx.paint_quad(quad(
1467 bounds,
1468 Corners::default(),
1469 color,
1470 Edges {
1471 top: Pixels::ZERO,
1472 right: px(1.),
1473 bottom: Pixels::ZERO,
1474 left: px(1.),
1475 },
1476 cx.theme().colors().scrollbar_thumb_border,
1477 ));
1478 }
1479 }
1480
1481 if layout.is_singleton && scrollbar_settings.diagnostics {
1482 let max_point = layout
1483 .position_map
1484 .snapshot
1485 .display_snapshot
1486 .buffer_snapshot
1487 .max_point();
1488
1489 let diagnostics = layout
1490 .position_map
1491 .snapshot
1492 .buffer_snapshot
1493 .diagnostics_in_range::<_, Point>(Point::zero()..max_point, false)
1494 // We want to sort by severity, in order to paint the most severe diagnostics last.
1495 .sorted_by_key(|diagnostic| std::cmp::Reverse(diagnostic.diagnostic.severity));
1496
1497 for diagnostic in diagnostics {
1498 let start_display = diagnostic
1499 .range
1500 .start
1501 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1502 let end_display = diagnostic
1503 .range
1504 .end
1505 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1506 let start_y = y_for_row(start_display.row() as f32);
1507 let mut end_y = if diagnostic.range.start == diagnostic.range.end {
1508 y_for_row((end_display.row() + 1) as f32)
1509 } else {
1510 y_for_row((end_display.row()) as f32)
1511 };
1512
1513 if end_y - start_y < px(1.) {
1514 end_y = start_y + px(1.);
1515 }
1516 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1517
1518 let color = match diagnostic.diagnostic.severity {
1519 DiagnosticSeverity::ERROR => cx.theme().status().error,
1520 DiagnosticSeverity::WARNING => cx.theme().status().warning,
1521 DiagnosticSeverity::INFORMATION => cx.theme().status().info,
1522 _ => cx.theme().status().hint,
1523 };
1524 cx.paint_quad(quad(
1525 bounds,
1526 Corners::default(),
1527 color,
1528 Edges {
1529 top: Pixels::ZERO,
1530 right: px(1.),
1531 bottom: Pixels::ZERO,
1532 left: px(1.),
1533 },
1534 cx.theme().colors().scrollbar_thumb_border,
1535 ));
1536 }
1537 }
1538
1539 cx.paint_quad(quad(
1540 thumb_bounds,
1541 Corners::default(),
1542 cx.theme().colors().scrollbar_thumb_background,
1543 Edges {
1544 top: Pixels::ZERO,
1545 right: px(1.),
1546 bottom: Pixels::ZERO,
1547 left: px(1.),
1548 },
1549 cx.theme().colors().scrollbar_thumb_border,
1550 ));
1551 }
1552
1553 let interactive_track_bounds = InteractiveBounds {
1554 bounds: track_bounds,
1555 stacking_order: cx.stacking_order().clone(),
1556 };
1557 let mut mouse_position = cx.mouse_position();
1558 if interactive_track_bounds.visibly_contains(&mouse_position, cx) {
1559 cx.set_cursor_style(CursorStyle::Arrow);
1560 }
1561
1562 cx.on_mouse_event({
1563 let editor = self.editor.clone();
1564 move |event: &MouseMoveEvent, phase, cx| {
1565 if phase == DispatchPhase::Capture {
1566 return;
1567 }
1568
1569 editor.update(cx, |editor, cx| {
1570 if event.pressed_button == Some(MouseButton::Left)
1571 && editor.scroll_manager.is_dragging_scrollbar()
1572 {
1573 let y = mouse_position.y;
1574 let new_y = event.position.y;
1575 if (track_bounds.top()..track_bounds.bottom()).contains(&y) {
1576 let mut position = editor.scroll_position(cx);
1577 position.y += (new_y - y) * (max_row as f32) / height;
1578 if position.y < 0.0 {
1579 position.y = 0.0;
1580 }
1581 editor.set_scroll_position(position, cx);
1582 }
1583
1584 mouse_position = event.position;
1585 cx.stop_propagation();
1586 } else {
1587 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1588 if interactive_track_bounds.visibly_contains(&event.position, cx) {
1589 editor.scroll_manager.show_scrollbar(cx);
1590 }
1591 }
1592 })
1593 }
1594 });
1595
1596 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
1597 cx.on_mouse_event({
1598 let editor = self.editor.clone();
1599 move |_: &MouseUpEvent, phase, cx| {
1600 if phase == DispatchPhase::Capture {
1601 return;
1602 }
1603
1604 editor.update(cx, |editor, cx| {
1605 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1606 cx.stop_propagation();
1607 });
1608 }
1609 });
1610 } else {
1611 cx.on_mouse_event({
1612 let editor = self.editor.clone();
1613 move |event: &MouseDownEvent, phase, cx| {
1614 if phase == DispatchPhase::Capture {
1615 return;
1616 }
1617
1618 editor.update(cx, |editor, cx| {
1619 if track_bounds.contains(&event.position) {
1620 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
1621
1622 let y = event.position.y;
1623 if y < thumb_top || thumb_bottom < y {
1624 let center_row =
1625 ((y - top) * max_row as f32 / height).round() as u32;
1626 let top_row = center_row
1627 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1628 let mut position = editor.scroll_position(cx);
1629 position.y = top_row as f32;
1630 editor.set_scroll_position(position, cx);
1631 } else {
1632 editor.scroll_manager.show_scrollbar(cx);
1633 }
1634
1635 cx.stop_propagation();
1636 }
1637 });
1638 }
1639 });
1640 }
1641 }
1642
1643 #[allow(clippy::too_many_arguments)]
1644 fn paint_highlighted_range(
1645 &self,
1646 range: Range<DisplayPoint>,
1647 color: Hsla,
1648 corner_radius: Pixels,
1649 line_end_overshoot: Pixels,
1650 layout: &LayoutState,
1651 content_origin: gpui::Point<Pixels>,
1652 bounds: Bounds<Pixels>,
1653 cx: &mut ElementContext,
1654 ) {
1655 let start_row = layout.visible_display_row_range.start;
1656 let end_row = layout.visible_display_row_range.end;
1657 if range.start != range.end {
1658 let row_range = if range.end.column() == 0 {
1659 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1660 } else {
1661 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1662 };
1663
1664 let highlighted_range = HighlightedRange {
1665 color,
1666 line_height: layout.position_map.line_height,
1667 corner_radius,
1668 start_y: content_origin.y
1669 + row_range.start as f32 * layout.position_map.line_height
1670 - layout.position_map.scroll_position.y,
1671 lines: row_range
1672 .into_iter()
1673 .map(|row| {
1674 let line_layout =
1675 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1676 HighlightedRangeLine {
1677 start_x: if row == range.start.row() {
1678 content_origin.x
1679 + line_layout.x_for_index(range.start.column() as usize)
1680 - layout.position_map.scroll_position.x
1681 } else {
1682 content_origin.x - layout.position_map.scroll_position.x
1683 },
1684 end_x: if row == range.end.row() {
1685 content_origin.x
1686 + line_layout.x_for_index(range.end.column() as usize)
1687 - layout.position_map.scroll_position.x
1688 } else {
1689 content_origin.x + line_layout.width + line_end_overshoot
1690 - layout.position_map.scroll_position.x
1691 },
1692 }
1693 })
1694 .collect(),
1695 };
1696
1697 highlighted_range.paint(bounds, cx);
1698 }
1699 }
1700
1701 fn paint_blocks(
1702 &mut self,
1703 bounds: Bounds<Pixels>,
1704 layout: &mut LayoutState,
1705 cx: &mut ElementContext,
1706 ) {
1707 let scroll_position = layout.position_map.snapshot.scroll_position();
1708 let scroll_left = scroll_position.x * layout.position_map.em_width;
1709 let scroll_top = scroll_position.y * layout.position_map.line_height;
1710
1711 for mut block in layout.blocks.drain(..) {
1712 let mut origin = bounds.origin
1713 + point(
1714 Pixels::ZERO,
1715 block.row as f32 * layout.position_map.line_height - scroll_top,
1716 );
1717 if !matches!(block.style, BlockStyle::Sticky) {
1718 origin += point(-scroll_left, Pixels::ZERO);
1719 }
1720 block.element.draw(origin, block.available_space, cx);
1721 }
1722 }
1723
1724 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1725 let style = &self.style;
1726 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1727 let layout = cx
1728 .text_system()
1729 .shape_line(
1730 SharedString::from(" ".repeat(column)),
1731 font_size,
1732 &[TextRun {
1733 len: column,
1734 font: style.text.font(),
1735 color: Hsla::default(),
1736 background_color: None,
1737 underline: None,
1738 }],
1739 )
1740 .unwrap();
1741
1742 layout.width
1743 }
1744
1745 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1746 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1747 self.column_pixels(digit_count, cx)
1748 }
1749
1750 //Folds contained in a hunk are ignored apart from shrinking visual size
1751 //If a fold contains any hunks then that fold line is marked as modified
1752 fn layout_git_gutters(
1753 &self,
1754 display_rows: Range<u32>,
1755 snapshot: &EditorSnapshot,
1756 ) -> Vec<DisplayDiffHunk> {
1757 let buffer_snapshot = &snapshot.buffer_snapshot;
1758
1759 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1760 .to_point(snapshot)
1761 .row;
1762 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1763 .to_point(snapshot)
1764 .row;
1765
1766 buffer_snapshot
1767 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1768 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1769 .dedup()
1770 .collect()
1771 }
1772
1773 fn calculate_relative_line_numbers(
1774 &self,
1775 snapshot: &EditorSnapshot,
1776 rows: &Range<u32>,
1777 relative_to: Option<u32>,
1778 ) -> HashMap<u32, u32> {
1779 let mut relative_rows: HashMap<u32, u32> = Default::default();
1780 let Some(relative_to) = relative_to else {
1781 return relative_rows;
1782 };
1783
1784 let start = rows.start.min(relative_to);
1785 let end = rows.end.max(relative_to);
1786
1787 let buffer_rows = snapshot
1788 .buffer_rows(start)
1789 .take(1 + (end - start) as usize)
1790 .collect::<Vec<_>>();
1791
1792 let head_idx = relative_to - start;
1793 let mut delta = 1;
1794 let mut i = head_idx + 1;
1795 while i < buffer_rows.len() as u32 {
1796 if buffer_rows[i as usize].is_some() {
1797 if rows.contains(&(i + start)) {
1798 relative_rows.insert(i + start, delta);
1799 }
1800 delta += 1;
1801 }
1802 i += 1;
1803 }
1804 delta = 1;
1805 i = head_idx.min(buffer_rows.len() as u32 - 1);
1806 while i > 0 && buffer_rows[i as usize].is_none() {
1807 i -= 1;
1808 }
1809
1810 while i > 0 {
1811 i -= 1;
1812 if buffer_rows[i as usize].is_some() {
1813 if rows.contains(&(i + start)) {
1814 relative_rows.insert(i + start, delta);
1815 }
1816 delta += 1;
1817 }
1818 }
1819
1820 relative_rows
1821 }
1822
1823 fn shape_line_numbers(
1824 &self,
1825 rows: Range<u32>,
1826 active_rows: &BTreeMap<u32, bool>,
1827 newest_selection_head: DisplayPoint,
1828 is_singleton: bool,
1829 snapshot: &EditorSnapshot,
1830 cx: &ViewContext<Editor>,
1831 ) -> (
1832 Vec<Option<ShapedLine>>,
1833 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1834 ) {
1835 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1836 let include_line_numbers = snapshot.mode == EditorMode::Full;
1837 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1838 let mut fold_statuses = Vec::with_capacity(rows.len());
1839 let mut line_number = String::new();
1840 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1841 let relative_to = if is_relative {
1842 Some(newest_selection_head.row())
1843 } else {
1844 None
1845 };
1846
1847 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1848
1849 for (ix, row) in snapshot
1850 .buffer_rows(rows.start)
1851 .take((rows.end - rows.start) as usize)
1852 .enumerate()
1853 {
1854 let display_row = rows.start + ix as u32;
1855 let (active, color) = if active_rows.contains_key(&display_row) {
1856 (true, cx.theme().colors().editor_active_line_number)
1857 } else {
1858 (false, cx.theme().colors().editor_line_number)
1859 };
1860 if let Some(buffer_row) = row {
1861 if include_line_numbers {
1862 line_number.clear();
1863 let default_number = buffer_row + 1;
1864 let number = relative_rows
1865 .get(&(ix as u32 + rows.start))
1866 .unwrap_or(&default_number);
1867 write!(&mut line_number, "{}", number).unwrap();
1868 let run = TextRun {
1869 len: line_number.len(),
1870 font: self.style.text.font(),
1871 color,
1872 background_color: None,
1873 underline: None,
1874 };
1875 let shaped_line = cx
1876 .text_system()
1877 .shape_line(line_number.clone().into(), font_size, &[run])
1878 .unwrap();
1879 shaped_line_numbers.push(Some(shaped_line));
1880 fold_statuses.push(
1881 is_singleton
1882 .then(|| {
1883 snapshot
1884 .fold_for_line(buffer_row)
1885 .map(|fold_status| (fold_status, buffer_row, active))
1886 })
1887 .flatten(),
1888 )
1889 }
1890 } else {
1891 fold_statuses.push(None);
1892 shaped_line_numbers.push(None);
1893 }
1894 }
1895
1896 (shaped_line_numbers, fold_statuses)
1897 }
1898
1899 fn layout_lines(
1900 &self,
1901 rows: Range<u32>,
1902 line_number_layouts: &[Option<ShapedLine>],
1903 snapshot: &EditorSnapshot,
1904 cx: &ViewContext<Editor>,
1905 ) -> Vec<LineWithInvisibles> {
1906 if rows.start >= rows.end {
1907 return Vec::new();
1908 }
1909
1910 // Show the placeholder when the editor is empty
1911 if snapshot.is_empty() {
1912 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1913 let placeholder_color = cx.theme().colors().text_placeholder;
1914 let placeholder_text = snapshot.placeholder_text();
1915
1916 let placeholder_lines = placeholder_text
1917 .as_ref()
1918 .map_or("", AsRef::as_ref)
1919 .split('\n')
1920 .skip(rows.start as usize)
1921 .chain(iter::repeat(""))
1922 .take(rows.len());
1923 placeholder_lines
1924 .filter_map(move |line| {
1925 let run = TextRun {
1926 len: line.len(),
1927 font: self.style.text.font(),
1928 color: placeholder_color,
1929 background_color: None,
1930 underline: Default::default(),
1931 };
1932 cx.text_system()
1933 .shape_line(line.to_string().into(), font_size, &[run])
1934 .log_err()
1935 })
1936 .map(|line| LineWithInvisibles {
1937 line,
1938 invisibles: Vec::new(),
1939 })
1940 .collect()
1941 } else {
1942 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1943 LineWithInvisibles::from_chunks(
1944 chunks,
1945 &self.style.text,
1946 MAX_LINE_LEN,
1947 rows.len() as usize,
1948 line_number_layouts,
1949 snapshot.mode,
1950 cx,
1951 )
1952 }
1953 }
1954
1955 fn compute_layout(&mut self, bounds: Bounds<Pixels>, cx: &mut ElementContext) -> LayoutState {
1956 self.editor.update(cx, |editor, cx| {
1957 let snapshot = editor.snapshot(cx);
1958 let style = self.style.clone();
1959
1960 let font_id = cx.text_system().resolve_font(&style.text.font());
1961 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1962 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1963 let em_width = cx
1964 .text_system()
1965 .typographic_bounds(font_id, font_size, 'm')
1966 .unwrap()
1967 .size
1968 .width;
1969 let em_advance = cx
1970 .text_system()
1971 .advance(font_id, font_size, 'm')
1972 .unwrap()
1973 .width;
1974
1975 let gutter_dimensions = snapshot.gutter_dimensions(font_id, font_size, em_width, self.max_line_number_width(&snapshot, cx), cx);
1976
1977 editor.gutter_width = gutter_dimensions.width;
1978
1979 let text_width = bounds.size.width - gutter_dimensions.width;
1980 let overscroll = size(em_width, px(0.));
1981 let _snapshot = {
1982 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1983
1984 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
1985 let wrap_width = match editor.soft_wrap_mode(cx) {
1986 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1987 SoftWrap::EditorWidth => editor_width,
1988 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1989 };
1990
1991 if editor.set_wrap_width(Some(wrap_width), cx) {
1992 editor.snapshot(cx)
1993 } else {
1994 snapshot
1995 }
1996 };
1997
1998 let wrap_guides = editor
1999 .wrap_guides(cx)
2000 .iter()
2001 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2002 .collect::<SmallVec<[_; 2]>>();
2003
2004 let gutter_size = size(gutter_dimensions.width, bounds.size.height);
2005 let text_size = size(text_width, bounds.size.height);
2006
2007 let autoscroll_horizontally =
2008 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
2009 let mut snapshot = editor.snapshot(cx);
2010
2011 let scroll_position = snapshot.scroll_position();
2012 // The scroll position is a fractional point, the whole number of which represents
2013 // the top of the window in terms of display rows.
2014 let start_row = scroll_position.y as u32;
2015 let height_in_lines = f32::from(bounds.size.height / line_height);
2016 let max_row = snapshot.max_point().row();
2017
2018 // Add 1 to ensure selections bleed off screen
2019 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
2020
2021 let start_anchor = if start_row == 0 {
2022 Anchor::min()
2023 } else {
2024 snapshot
2025 .buffer_snapshot
2026 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2027 };
2028 let end_anchor = if end_row > max_row {
2029 Anchor::max()
2030 } else {
2031 snapshot
2032 .buffer_snapshot
2033 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2034 };
2035
2036 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
2037 let mut active_rows = BTreeMap::new();
2038 let is_singleton = editor.is_singleton(cx);
2039
2040 let highlighted_rows = editor.highlighted_rows();
2041 let highlighted_ranges = editor.background_highlights_in_range(
2042 start_anchor..end_anchor,
2043 &snapshot.display_snapshot,
2044 cx.theme().colors(),
2045 );
2046
2047 let redacted_ranges = editor.redacted_ranges(start_anchor..end_anchor, &snapshot.display_snapshot, cx);
2048
2049 let mut newest_selection_head = None;
2050
2051 if editor.show_local_selections {
2052 let mut local_selections: Vec<Selection<Point>> = editor
2053 .selections
2054 .disjoint_in_range(start_anchor..end_anchor, cx);
2055 local_selections.extend(editor.selections.pending(cx));
2056 let mut layouts = Vec::new();
2057 let newest = editor.selections.newest(cx);
2058 for selection in local_selections.drain(..) {
2059 let is_empty = selection.start == selection.end;
2060 let is_newest = selection == newest;
2061
2062 let layout = SelectionLayout::new(
2063 selection,
2064 editor.selections.line_mode,
2065 editor.cursor_shape,
2066 &snapshot.display_snapshot,
2067 is_newest,
2068 true,
2069 None,
2070 );
2071 if is_newest {
2072 newest_selection_head = Some(layout.head);
2073 }
2074
2075 for row in cmp::max(layout.active_rows.start, start_row)
2076 ..=cmp::min(layout.active_rows.end, end_row)
2077 {
2078 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2079 *contains_non_empty_selection |= !is_empty;
2080 }
2081 layouts.push(layout);
2082 }
2083
2084 let player = if editor.read_only(cx) {
2085 cx.theme().players().read_only()
2086 } else {
2087 style.local_player
2088 };
2089
2090 selections.push((player, layouts));
2091 }
2092
2093 if let Some(collaboration_hub) = &editor.collaboration_hub {
2094 // When following someone, render the local selections in their color.
2095 if let Some(leader_id) = editor.leader_peer_id {
2096 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2097 if let Some(participant_index) = collaboration_hub
2098 .user_participant_indices(cx)
2099 .get(&collaborator.user_id)
2100 {
2101 if let Some((local_selection_style, _)) = selections.first_mut() {
2102 *local_selection_style = cx
2103 .theme()
2104 .players()
2105 .color_for_participant(participant_index.0);
2106 }
2107 }
2108 }
2109 }
2110
2111 let mut remote_selections = HashMap::default();
2112 for selection in snapshot.remote_selections_in_range(
2113 &(start_anchor..end_anchor),
2114 collaboration_hub.as_ref(),
2115 cx,
2116 ) {
2117 let selection_style = if let Some(participant_index) = selection.participant_index {
2118 cx.theme()
2119 .players()
2120 .color_for_participant(participant_index.0)
2121 } else {
2122 cx.theme().players().absent()
2123 };
2124
2125 // Don't re-render the leader's selections, since the local selections
2126 // match theirs.
2127 if Some(selection.peer_id) == editor.leader_peer_id {
2128 continue;
2129 }
2130 let key = HoveredCursor{replica_id: selection.replica_id, selection_id: selection.selection.id};
2131
2132 let is_shown = editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
2133
2134 remote_selections
2135 .entry(selection.replica_id)
2136 .or_insert((selection_style, Vec::new()))
2137 .1
2138 .push(SelectionLayout::new(
2139 selection.selection,
2140 selection.line_mode,
2141 selection.cursor_shape,
2142 &snapshot.display_snapshot,
2143 false,
2144 false,
2145 if is_shown {
2146 selection.user_name
2147 } else {
2148 None
2149 },
2150 ));
2151 }
2152
2153 selections.extend(remote_selections.into_values());
2154 }
2155
2156 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2157 let show_scrollbars = match scrollbar_settings.show {
2158 ShowScrollbar::Auto => {
2159 // Git
2160 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2161 ||
2162 // Selections
2163 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
2164 ||
2165 // Symbols Selections
2166 (is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
2167 ||
2168 // Diagnostics
2169 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
2170 ||
2171 // Scrollmanager
2172 editor.scroll_manager.scrollbars_visible()
2173 }
2174 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2175 ShowScrollbar::Always => true,
2176 ShowScrollbar::Never => false,
2177 };
2178
2179 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2180 let newest = editor.selections.newest::<Point>(cx);
2181 SelectionLayout::new(
2182 newest,
2183 editor.selections.line_mode,
2184 editor.cursor_shape,
2185 &snapshot.display_snapshot,
2186 true,
2187 true,
2188 None,
2189 )
2190 .head
2191 });
2192
2193 let (line_numbers, fold_statuses) = self.shape_line_numbers(
2194 start_row..end_row,
2195 &active_rows,
2196 head_for_relative,
2197 is_singleton,
2198 &snapshot,
2199 cx,
2200 );
2201
2202 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2203
2204 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2205
2206 let mut max_visible_line_width = Pixels::ZERO;
2207 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
2208 for line_with_invisibles in &line_layouts {
2209 if line_with_invisibles.line.width > max_visible_line_width {
2210 max_visible_line_width = line_with_invisibles.line.width;
2211 }
2212 }
2213
2214 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
2215 .unwrap()
2216 .width;
2217 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
2218
2219 let editor_view = cx.view().clone();
2220 let (scroll_width, blocks) = cx.with_element_context(|cx| {
2221 cx.with_element_id(Some("editor_blocks"), |cx| {
2222 self.layout_blocks(
2223 start_row..end_row,
2224 &snapshot,
2225 bounds.size.width,
2226 scroll_width,
2227 text_width,
2228 gutter_dimensions.padding,
2229 gutter_dimensions.width,
2230 em_width,
2231 gutter_dimensions.width + gutter_dimensions.margin,
2232 line_height,
2233 &style,
2234 &line_layouts,
2235 editor,
2236 editor_view,
2237 cx,
2238 )
2239 })
2240 });
2241
2242 let scroll_max = point(
2243 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
2244 max_row as f32,
2245 );
2246
2247 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2248
2249 let autoscrolled = if autoscroll_horizontally {
2250 editor.autoscroll_horizontally(
2251 start_row,
2252 text_size.width,
2253 scroll_width,
2254 em_width,
2255 &line_layouts,
2256 cx,
2257 )
2258 } else {
2259 false
2260 };
2261
2262 if clamped || autoscrolled {
2263 snapshot = editor.snapshot(cx);
2264 }
2265
2266 let mut context_menu = None;
2267 let mut code_actions_indicator = None;
2268 if let Some(newest_selection_head) = newest_selection_head {
2269 if (start_row..end_row).contains(&newest_selection_head.row()) {
2270 if editor.context_menu_visible() {
2271 let max_height = cmp::min(
2272 12. * line_height,
2273 cmp::max(
2274 3. * line_height,
2275 (bounds.size.height - line_height) / 2.,
2276 )
2277 );
2278 context_menu =
2279 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2280 }
2281
2282 let active = matches!(
2283 editor.context_menu.read().as_ref(),
2284 Some(crate::ContextMenu::CodeActions(_))
2285 );
2286
2287 code_actions_indicator = editor
2288 .render_code_actions_indicator(&style, active, cx)
2289 .map(|element| CodeActionsIndicator {
2290 row: newest_selection_head.row(),
2291 button: element,
2292 });
2293 }
2294 }
2295
2296 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2297 let max_size = size(
2298 (120. * em_width) // Default size
2299 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2300 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2301 (16. * line_height) // Default size
2302 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2303 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2304 );
2305
2306 let hover = if context_menu.is_some() {
2307 None
2308 } else {
2309 editor.hover_state.render(
2310 &snapshot,
2311 &style,
2312 visible_rows,
2313 max_size,
2314 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2315 cx,
2316 )
2317 };
2318
2319 let editor_view = cx.view().clone();
2320 let fold_indicators = cx.with_element_context(|cx| {
2321
2322 cx.with_element_id(Some("gutter_fold_indicators"), |_cx| {
2323 editor.render_fold_indicators(
2324 fold_statuses,
2325 &style,
2326 editor.gutter_hovered,
2327 line_height,
2328 gutter_dimensions.margin,
2329 editor_view,
2330 )
2331 })
2332 });
2333
2334 let invisible_symbol_font_size = font_size / 2.;
2335 let tab_invisible = cx
2336 .text_system()
2337 .shape_line(
2338 "→".into(),
2339 invisible_symbol_font_size,
2340 &[TextRun {
2341 len: "→".len(),
2342 font: self.style.text.font(),
2343 color: cx.theme().colors().editor_invisible,
2344 background_color: None,
2345 underline: None,
2346 }],
2347 )
2348 .unwrap();
2349 let space_invisible = cx
2350 .text_system()
2351 .shape_line(
2352 "•".into(),
2353 invisible_symbol_font_size,
2354 &[TextRun {
2355 len: "•".len(),
2356 font: self.style.text.font(),
2357 color: cx.theme().colors().editor_invisible,
2358 background_color: None,
2359 underline: None,
2360 }],
2361 )
2362 .unwrap();
2363
2364 LayoutState {
2365 mode: snapshot.mode,
2366 position_map: Arc::new(PositionMap {
2367 size: bounds.size,
2368 scroll_position: point(
2369 scroll_position.x * em_width,
2370 scroll_position.y * line_height,
2371 ),
2372 scroll_max,
2373 line_layouts,
2374 line_height,
2375 em_width,
2376 em_advance,
2377 snapshot,
2378 }),
2379 visible_anchor_range: start_anchor..end_anchor,
2380 visible_display_row_range: start_row..end_row,
2381 wrap_guides,
2382 gutter_size,
2383 gutter_padding: gutter_dimensions.padding,
2384 text_size,
2385 scrollbar_row_range,
2386 show_scrollbars,
2387 is_singleton,
2388 max_row,
2389 gutter_margin: gutter_dimensions.margin,
2390 active_rows,
2391 highlighted_rows,
2392 highlighted_ranges,
2393 redacted_ranges,
2394 line_numbers,
2395 display_hunks,
2396 blocks,
2397 selections,
2398 context_menu,
2399 code_actions_indicator,
2400 fold_indicators,
2401 tab_invisible,
2402 space_invisible,
2403 hover_popovers: hover,
2404 }
2405 })
2406 }
2407
2408 #[allow(clippy::too_many_arguments)]
2409 fn layout_blocks(
2410 &self,
2411 rows: Range<u32>,
2412 snapshot: &EditorSnapshot,
2413 editor_width: Pixels,
2414 scroll_width: Pixels,
2415 text_width: Pixels,
2416 gutter_padding: Pixels,
2417 gutter_width: Pixels,
2418 em_width: Pixels,
2419 text_x: Pixels,
2420 line_height: Pixels,
2421 style: &EditorStyle,
2422 line_layouts: &[LineWithInvisibles],
2423 editor: &mut Editor,
2424 editor_view: View<Editor>,
2425 cx: &mut ElementContext,
2426 ) -> (Pixels, Vec<BlockLayout>) {
2427 let mut block_id = 0;
2428 let (fixed_blocks, non_fixed_blocks) = snapshot
2429 .blocks_in_range(rows.clone())
2430 .partition::<Vec<_>, _>(|(_, block)| match block {
2431 TransformBlock::ExcerptHeader { .. } => false,
2432 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2433 });
2434
2435 let render_block = |block: &TransformBlock,
2436 available_space: Size<AvailableSpace>,
2437 block_id: usize,
2438 editor: &mut Editor,
2439 cx: &mut ElementContext| {
2440 let mut element = match block {
2441 TransformBlock::Custom(block) => {
2442 let align_to = block
2443 .position()
2444 .to_point(&snapshot.buffer_snapshot)
2445 .to_display_point(snapshot);
2446 let anchor_x = text_x
2447 + if rows.contains(&align_to.row()) {
2448 line_layouts[(align_to.row() - rows.start) as usize]
2449 .line
2450 .x_for_index(align_to.column() as usize)
2451 } else {
2452 layout_line(align_to.row(), snapshot, style, cx)
2453 .unwrap()
2454 .x_for_index(align_to.column() as usize)
2455 };
2456
2457 block.render(&mut BlockContext {
2458 context: cx,
2459 anchor_x,
2460 gutter_padding,
2461 line_height,
2462 gutter_width,
2463 em_width,
2464 block_id,
2465 max_width: scroll_width.max(text_width),
2466 view: editor_view.clone(),
2467 editor_style: &self.style,
2468 })
2469 }
2470
2471 TransformBlock::ExcerptHeader {
2472 buffer,
2473 range,
2474 starts_new_buffer,
2475 ..
2476 } => {
2477 let include_root = editor
2478 .project
2479 .as_ref()
2480 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2481 .unwrap_or_default();
2482
2483 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2484 let jump_path = ProjectPath {
2485 worktree_id: file.worktree_id(cx),
2486 path: file.path.clone(),
2487 };
2488 let jump_anchor = range
2489 .primary
2490 .as_ref()
2491 .map_or(range.context.start, |primary| primary.start);
2492 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2493
2494 cx.listener_for(&self.editor, move |editor, _, cx| {
2495 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2496 })
2497 });
2498
2499 let element = if *starts_new_buffer {
2500 let path = buffer.resolve_file_path(cx, include_root);
2501 let mut filename = None;
2502 let mut parent_path = None;
2503 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2504 if let Some(path) = path {
2505 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2506 parent_path = path
2507 .parent()
2508 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2509 }
2510
2511 v_flex()
2512 .id(("path header container", block_id))
2513 .size_full()
2514 .justify_center()
2515 .p(gpui::px(6.))
2516 .child(
2517 h_flex()
2518 .id("path header block")
2519 .size_full()
2520 .pl(gpui::px(12.))
2521 .pr(gpui::px(8.))
2522 .rounded_md()
2523 .shadow_md()
2524 .border()
2525 .border_color(cx.theme().colors().border)
2526 .bg(cx.theme().colors().editor_subheader_background)
2527 .justify_between()
2528 .hover(|style| style.bg(cx.theme().colors().element_hover))
2529 .child(
2530 h_flex().gap_3().child(
2531 h_flex()
2532 .gap_2()
2533 .child(
2534 filename
2535 .map(SharedString::from)
2536 .unwrap_or_else(|| "untitled".into()),
2537 )
2538 .when_some(parent_path, |then, path| {
2539 then.child(
2540 div().child(path).text_color(
2541 cx.theme().colors().text_muted,
2542 ),
2543 )
2544 }),
2545 ),
2546 )
2547 .when_some(jump_handler, |this, jump_handler| {
2548 this.cursor_pointer()
2549 .tooltip(|cx| {
2550 Tooltip::for_action(
2551 "Jump to Buffer",
2552 &OpenExcerpts,
2553 cx,
2554 )
2555 })
2556 .on_mouse_down(MouseButton::Left, |_, cx| {
2557 cx.stop_propagation()
2558 })
2559 .on_click(jump_handler)
2560 }),
2561 )
2562 } else {
2563 h_flex()
2564 .id(("collapsed context", block_id))
2565 .size_full()
2566 .gap(gutter_padding)
2567 .child(
2568 h_flex()
2569 .justify_end()
2570 .flex_none()
2571 .w(gutter_width - gutter_padding)
2572 .h_full()
2573 .text_buffer(cx)
2574 .text_color(cx.theme().colors().editor_line_number)
2575 .child("..."),
2576 )
2577 .child(
2578 ButtonLike::new("jump to collapsed context")
2579 .style(ButtonStyle::Transparent)
2580 .full_width()
2581 .child(
2582 div()
2583 .h_px()
2584 .w_full()
2585 .bg(cx.theme().colors().border_variant)
2586 .group_hover("", |style| {
2587 style.bg(cx.theme().colors().border)
2588 }),
2589 )
2590 .when_some(jump_handler, |this, jump_handler| {
2591 this.on_click(jump_handler).tooltip(|cx| {
2592 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2593 })
2594 }),
2595 )
2596 };
2597 element.into_any()
2598 }
2599 };
2600
2601 let size = element.measure(available_space, cx);
2602 (element, size)
2603 };
2604
2605 let mut fixed_block_max_width = Pixels::ZERO;
2606 let mut blocks = Vec::new();
2607 for (row, block) in fixed_blocks {
2608 let available_space = size(
2609 AvailableSpace::MinContent,
2610 AvailableSpace::Definite(block.height() as f32 * line_height),
2611 );
2612 let (element, element_size) =
2613 render_block(block, available_space, block_id, editor, cx);
2614 block_id += 1;
2615 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2616 blocks.push(BlockLayout {
2617 row,
2618 element,
2619 available_space,
2620 style: BlockStyle::Fixed,
2621 });
2622 }
2623 for (row, block) in non_fixed_blocks {
2624 let style = match block {
2625 TransformBlock::Custom(block) => block.style(),
2626 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2627 };
2628 let width = match style {
2629 BlockStyle::Sticky => editor_width,
2630 BlockStyle::Flex => editor_width
2631 .max(fixed_block_max_width)
2632 .max(gutter_width + scroll_width),
2633 BlockStyle::Fixed => unreachable!(),
2634 };
2635 let available_space = size(
2636 AvailableSpace::Definite(width),
2637 AvailableSpace::Definite(block.height() as f32 * line_height),
2638 );
2639 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2640 block_id += 1;
2641 blocks.push(BlockLayout {
2642 row,
2643 element,
2644 available_space,
2645 style,
2646 });
2647 }
2648 (
2649 scroll_width.max(fixed_block_max_width - gutter_width),
2650 blocks,
2651 )
2652 }
2653
2654 fn paint_scroll_wheel_listener(
2655 &mut self,
2656 interactive_bounds: &InteractiveBounds,
2657 layout: &LayoutState,
2658 cx: &mut ElementContext,
2659 ) {
2660 cx.on_mouse_event({
2661 let position_map = layout.position_map.clone();
2662 let editor = self.editor.clone();
2663 let interactive_bounds = interactive_bounds.clone();
2664 let mut delta = ScrollDelta::default();
2665
2666 move |event: &ScrollWheelEvent, phase, cx| {
2667 if phase == DispatchPhase::Bubble
2668 && interactive_bounds.visibly_contains(&event.position, cx)
2669 {
2670 delta = delta.coalesce(event.delta);
2671 editor.update(cx, |editor, cx| {
2672 let position = event.position;
2673 let position_map: &PositionMap = &position_map;
2674 let bounds = &interactive_bounds;
2675 if !bounds.visibly_contains(&position, cx) {
2676 return;
2677 }
2678
2679 let line_height = position_map.line_height;
2680 let max_glyph_width = position_map.em_width;
2681 let (delta, axis) = match delta {
2682 gpui::ScrollDelta::Pixels(mut pixels) => {
2683 //Trackpad
2684 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2685 (pixels, axis)
2686 }
2687
2688 gpui::ScrollDelta::Lines(lines) => {
2689 //Not trackpad
2690 let pixels =
2691 point(lines.x * max_glyph_width, lines.y * line_height);
2692 (pixels, None)
2693 }
2694 };
2695
2696 let scroll_position = position_map.snapshot.scroll_position();
2697 let x = f32::from(
2698 (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width,
2699 );
2700 let y =
2701 f32::from((scroll_position.y * line_height - delta.y) / line_height);
2702 let scroll_position =
2703 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2704 editor.scroll(scroll_position, axis, cx);
2705 cx.stop_propagation();
2706 });
2707 }
2708 }
2709 });
2710 }
2711
2712 fn paint_mouse_listeners(
2713 &mut self,
2714 bounds: Bounds<Pixels>,
2715 gutter_bounds: Bounds<Pixels>,
2716 text_bounds: Bounds<Pixels>,
2717 layout: &LayoutState,
2718 cx: &mut ElementContext,
2719 ) {
2720 let interactive_bounds = InteractiveBounds {
2721 bounds: bounds.intersect(&cx.content_mask().bounds),
2722 stacking_order: cx.stacking_order().clone(),
2723 };
2724
2725 self.paint_scroll_wheel_listener(&interactive_bounds, layout, cx);
2726
2727 cx.on_mouse_event({
2728 let position_map = layout.position_map.clone();
2729 let editor = self.editor.clone();
2730 let stacking_order = cx.stacking_order().clone();
2731 let interactive_bounds = interactive_bounds.clone();
2732
2733 move |event: &MouseDownEvent, phase, cx| {
2734 if phase == DispatchPhase::Bubble
2735 && interactive_bounds.visibly_contains(&event.position, cx)
2736 {
2737 match event.button {
2738 MouseButton::Left => editor.update(cx, |editor, cx| {
2739 Self::mouse_left_down(
2740 editor,
2741 event,
2742 &position_map,
2743 text_bounds,
2744 gutter_bounds,
2745 &stacking_order,
2746 cx,
2747 );
2748 }),
2749 MouseButton::Right => editor.update(cx, |editor, cx| {
2750 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx);
2751 }),
2752 _ => {}
2753 };
2754 }
2755 }
2756 });
2757
2758 cx.on_mouse_event({
2759 let position_map = layout.position_map.clone();
2760 let editor = self.editor.clone();
2761 let stacking_order = cx.stacking_order().clone();
2762 let interactive_bounds = interactive_bounds.clone();
2763
2764 move |event: &MouseUpEvent, phase, cx| {
2765 if phase == DispatchPhase::Bubble {
2766 editor.update(cx, |editor, cx| {
2767 Self::mouse_up(
2768 editor,
2769 event,
2770 &position_map,
2771 text_bounds,
2772 &interactive_bounds,
2773 &stacking_order,
2774 cx,
2775 )
2776 });
2777 }
2778 }
2779 });
2780 cx.on_mouse_event({
2781 let position_map = layout.position_map.clone();
2782 let editor = self.editor.clone();
2783 let stacking_order = cx.stacking_order().clone();
2784
2785 move |event: &MouseMoveEvent, phase, cx| {
2786 // if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
2787
2788 if phase == DispatchPhase::Bubble {
2789 editor.update(cx, |editor, cx| {
2790 if event.pressed_button == Some(MouseButton::Left) {
2791 Self::mouse_dragged(
2792 editor,
2793 event,
2794 &position_map,
2795 text_bounds,
2796 gutter_bounds,
2797 &stacking_order,
2798 cx,
2799 )
2800 }
2801
2802 if interactive_bounds.visibly_contains(&event.position, cx) {
2803 Self::mouse_moved(
2804 editor,
2805 event,
2806 &position_map,
2807 text_bounds,
2808 gutter_bounds,
2809 &stacking_order,
2810 cx,
2811 )
2812 }
2813 });
2814 }
2815 }
2816 });
2817 }
2818}
2819
2820#[derive(Debug)]
2821pub(crate) struct LineWithInvisibles {
2822 pub line: ShapedLine,
2823 invisibles: Vec<Invisible>,
2824}
2825
2826impl LineWithInvisibles {
2827 fn from_chunks<'a>(
2828 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2829 text_style: &TextStyle,
2830 max_line_len: usize,
2831 max_line_count: usize,
2832 line_number_layouts: &[Option<ShapedLine>],
2833 editor_mode: EditorMode,
2834 cx: &WindowContext,
2835 ) -> Vec<Self> {
2836 let mut layouts = Vec::with_capacity(max_line_count);
2837 let mut line = String::new();
2838 let mut invisibles = Vec::new();
2839 let mut styles = Vec::new();
2840 let mut non_whitespace_added = false;
2841 let mut row = 0;
2842 let mut line_exceeded_max_len = false;
2843 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2844
2845 for highlighted_chunk in chunks.chain([HighlightedChunk {
2846 chunk: "\n",
2847 style: None,
2848 is_tab: false,
2849 }]) {
2850 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2851 if ix > 0 {
2852 let shaped_line = cx
2853 .text_system()
2854 .shape_line(line.clone().into(), font_size, &styles)
2855 .unwrap();
2856 layouts.push(Self {
2857 line: shaped_line,
2858 invisibles: invisibles.drain(..).collect(),
2859 });
2860
2861 line.clear();
2862 styles.clear();
2863 row += 1;
2864 line_exceeded_max_len = false;
2865 non_whitespace_added = false;
2866 if row == max_line_count {
2867 return layouts;
2868 }
2869 }
2870
2871 if !line_chunk.is_empty() && !line_exceeded_max_len {
2872 let text_style = if let Some(style) = highlighted_chunk.style {
2873 Cow::Owned(text_style.clone().highlight(style))
2874 } else {
2875 Cow::Borrowed(text_style)
2876 };
2877
2878 if line.len() + line_chunk.len() > max_line_len {
2879 let mut chunk_len = max_line_len - line.len();
2880 while !line_chunk.is_char_boundary(chunk_len) {
2881 chunk_len -= 1;
2882 }
2883 line_chunk = &line_chunk[..chunk_len];
2884 line_exceeded_max_len = true;
2885 }
2886
2887 styles.push(TextRun {
2888 len: line_chunk.len(),
2889 font: text_style.font(),
2890 color: text_style.color,
2891 background_color: text_style.background_color,
2892 underline: text_style.underline,
2893 });
2894
2895 if editor_mode == EditorMode::Full {
2896 // Line wrap pads its contents with fake whitespaces,
2897 // avoid printing them
2898 let inside_wrapped_string = line_number_layouts
2899 .get(row)
2900 .and_then(|layout| layout.as_ref())
2901 .is_none();
2902 if highlighted_chunk.is_tab {
2903 if non_whitespace_added || !inside_wrapped_string {
2904 invisibles.push(Invisible::Tab {
2905 line_start_offset: line.len(),
2906 });
2907 }
2908 } else {
2909 invisibles.extend(
2910 line_chunk
2911 .chars()
2912 .enumerate()
2913 .filter(|(_, line_char)| {
2914 let is_whitespace = line_char.is_whitespace();
2915 non_whitespace_added |= !is_whitespace;
2916 is_whitespace
2917 && (non_whitespace_added || !inside_wrapped_string)
2918 })
2919 .map(|(whitespace_index, _)| Invisible::Whitespace {
2920 line_offset: line.len() + whitespace_index,
2921 }),
2922 )
2923 }
2924 }
2925
2926 line.push_str(line_chunk);
2927 }
2928 }
2929 }
2930
2931 layouts
2932 }
2933
2934 fn draw(
2935 &self,
2936 layout: &LayoutState,
2937 row: u32,
2938 content_origin: gpui::Point<Pixels>,
2939 whitespace_setting: ShowWhitespaceSetting,
2940 selection_ranges: &[Range<DisplayPoint>],
2941 cx: &mut ElementContext,
2942 ) {
2943 let line_height = layout.position_map.line_height;
2944 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2945
2946 self.line
2947 .paint(
2948 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2949 line_height,
2950 cx,
2951 )
2952 .log_err();
2953
2954 self.draw_invisibles(
2955 &selection_ranges,
2956 layout,
2957 content_origin,
2958 line_y,
2959 row,
2960 line_height,
2961 whitespace_setting,
2962 cx,
2963 );
2964 }
2965
2966 fn draw_invisibles(
2967 &self,
2968 selection_ranges: &[Range<DisplayPoint>],
2969 layout: &LayoutState,
2970 content_origin: gpui::Point<Pixels>,
2971 line_y: Pixels,
2972 row: u32,
2973 line_height: Pixels,
2974 whitespace_setting: ShowWhitespaceSetting,
2975 cx: &mut ElementContext,
2976 ) {
2977 let allowed_invisibles_regions = match whitespace_setting {
2978 ShowWhitespaceSetting::None => return,
2979 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2980 ShowWhitespaceSetting::All => None,
2981 };
2982
2983 for invisible in &self.invisibles {
2984 let (&token_offset, invisible_symbol) = match invisible {
2985 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2986 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2987 };
2988
2989 let x_offset = self.line.x_for_index(token_offset);
2990 let invisible_offset =
2991 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2992 let origin = content_origin
2993 + gpui::point(
2994 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2995 line_y,
2996 );
2997
2998 if let Some(allowed_regions) = allowed_invisibles_regions {
2999 let invisible_point = DisplayPoint::new(row, token_offset as u32);
3000 if !allowed_regions
3001 .iter()
3002 .any(|region| region.start <= invisible_point && invisible_point < region.end)
3003 {
3004 continue;
3005 }
3006 }
3007 invisible_symbol.paint(origin, line_height, cx).log_err();
3008 }
3009 }
3010}
3011
3012#[derive(Debug, Clone, Copy, PartialEq, Eq)]
3013enum Invisible {
3014 Tab { line_start_offset: usize },
3015 Whitespace { line_offset: usize },
3016}
3017
3018impl Element for EditorElement {
3019 type State = ();
3020
3021 fn request_layout(
3022 &mut self,
3023 _element_state: Option<Self::State>,
3024 cx: &mut gpui::ElementContext,
3025 ) -> (gpui::LayoutId, Self::State) {
3026 cx.with_view_id(self.editor.entity_id(), |cx| {
3027 self.editor.update(cx, |editor, cx| {
3028 editor.set_style(self.style.clone(), cx);
3029
3030 let layout_id = match editor.mode {
3031 EditorMode::SingleLine => {
3032 let rem_size = cx.rem_size();
3033 let mut style = Style::default();
3034 style.size.width = relative(1.).into();
3035 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
3036 cx.with_element_context(|cx| cx.request_layout(&style, None))
3037 }
3038 EditorMode::AutoHeight { max_lines } => {
3039 let editor_handle = cx.view().clone();
3040 let max_line_number_width =
3041 self.max_line_number_width(&editor.snapshot(cx), cx);
3042 cx.with_element_context(|cx| {
3043 cx.request_measured_layout(
3044 Style::default(),
3045 move |known_dimensions, _, cx| {
3046 editor_handle
3047 .update(cx, |editor, cx| {
3048 compute_auto_height_layout(
3049 editor,
3050 max_lines,
3051 max_line_number_width,
3052 known_dimensions,
3053 cx,
3054 )
3055 })
3056 .unwrap_or_default()
3057 },
3058 )
3059 })
3060 }
3061 EditorMode::Full => {
3062 let mut style = Style::default();
3063 style.size.width = relative(1.).into();
3064 style.size.height = relative(1.).into();
3065 cx.with_element_context(|cx| cx.request_layout(&style, None))
3066 }
3067 };
3068
3069 (layout_id, ())
3070 })
3071 })
3072 }
3073
3074 fn paint(
3075 &mut self,
3076 bounds: Bounds<gpui::Pixels>,
3077 _element_state: &mut Self::State,
3078 cx: &mut gpui::ElementContext,
3079 ) {
3080 let editor = self.editor.clone();
3081
3082 cx.paint_view(self.editor.entity_id(), |cx| {
3083 cx.with_text_style(
3084 Some(gpui::TextStyleRefinement {
3085 font_size: Some(self.style.text.font_size),
3086 line_height: Some(self.style.text.line_height),
3087 ..Default::default()
3088 }),
3089 |cx| {
3090 let mut layout = self.compute_layout(bounds, cx);
3091 let gutter_bounds = Bounds {
3092 origin: bounds.origin,
3093 size: layout.gutter_size,
3094 };
3095 let text_bounds = Bounds {
3096 origin: gutter_bounds.upper_right(),
3097 size: layout.text_size,
3098 };
3099
3100 let focus_handle = editor.focus_handle(cx);
3101 let key_context = self.editor.read(cx).key_context(cx);
3102 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
3103 self.register_actions(cx);
3104 self.register_key_listeners(cx);
3105
3106 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3107 cx.handle_input(
3108 &focus_handle,
3109 ElementInputHandler::new(bounds, self.editor.clone()),
3110 );
3111
3112 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
3113 if layout.gutter_size.width > Pixels::ZERO {
3114 self.paint_gutter(gutter_bounds, &mut layout, cx);
3115 }
3116 self.paint_text(text_bounds, &mut layout, cx);
3117
3118 cx.with_z_index(0, |cx| {
3119 self.paint_mouse_listeners(
3120 bounds,
3121 gutter_bounds,
3122 text_bounds,
3123 &layout,
3124 cx,
3125 );
3126 });
3127 if !layout.blocks.is_empty() {
3128 cx.with_z_index(0, |cx| {
3129 cx.with_element_id(Some("editor_blocks"), |cx| {
3130 self.paint_blocks(bounds, &mut layout, cx);
3131 });
3132 })
3133 }
3134
3135 cx.with_z_index(1, |cx| {
3136 self.paint_overlays(text_bounds, &mut layout, cx);
3137 });
3138
3139 cx.with_z_index(2, |cx| self.paint_scrollbar(bounds, &mut layout, cx));
3140 });
3141 })
3142 },
3143 )
3144 })
3145 }
3146}
3147
3148impl IntoElement for EditorElement {
3149 type Element = Self;
3150
3151 fn element_id(&self) -> Option<gpui::ElementId> {
3152 self.editor.element_id()
3153 }
3154
3155 fn into_element(self) -> Self::Element {
3156 self
3157 }
3158}
3159
3160type BufferRow = u32;
3161
3162pub struct LayoutState {
3163 position_map: Arc<PositionMap>,
3164 gutter_size: Size<Pixels>,
3165 gutter_padding: Pixels,
3166 gutter_margin: Pixels,
3167 text_size: gpui::Size<Pixels>,
3168 mode: EditorMode,
3169 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3170 visible_anchor_range: Range<Anchor>,
3171 visible_display_row_range: Range<u32>,
3172 active_rows: BTreeMap<u32, bool>,
3173 highlighted_rows: Option<Range<u32>>,
3174 line_numbers: Vec<Option<ShapedLine>>,
3175 display_hunks: Vec<DisplayDiffHunk>,
3176 blocks: Vec<BlockLayout>,
3177 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3178 redacted_ranges: Vec<Range<DisplayPoint>>,
3179 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3180 scrollbar_row_range: Range<f32>,
3181 show_scrollbars: bool,
3182 is_singleton: bool,
3183 max_row: u32,
3184 context_menu: Option<(DisplayPoint, AnyElement)>,
3185 code_actions_indicator: Option<CodeActionsIndicator>,
3186 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3187 fold_indicators: Vec<Option<IconButton>>,
3188 tab_invisible: ShapedLine,
3189 space_invisible: ShapedLine,
3190}
3191
3192impl LayoutState {
3193 fn line_end_overshoot(&self) -> Pixels {
3194 0.15 * self.position_map.line_height
3195 }
3196}
3197
3198struct CodeActionsIndicator {
3199 row: u32,
3200 button: IconButton,
3201}
3202
3203struct PositionMap {
3204 size: Size<Pixels>,
3205 line_height: Pixels,
3206 scroll_position: gpui::Point<Pixels>,
3207 scroll_max: gpui::Point<f32>,
3208 em_width: Pixels,
3209 em_advance: Pixels,
3210 line_layouts: Vec<LineWithInvisibles>,
3211 snapshot: EditorSnapshot,
3212}
3213
3214#[derive(Debug, Copy, Clone)]
3215pub struct PointForPosition {
3216 pub previous_valid: DisplayPoint,
3217 pub next_valid: DisplayPoint,
3218 pub exact_unclipped: DisplayPoint,
3219 pub column_overshoot_after_line_end: u32,
3220}
3221
3222impl PointForPosition {
3223 #[cfg(test)]
3224 pub fn valid(valid: DisplayPoint) -> Self {
3225 Self {
3226 previous_valid: valid,
3227 next_valid: valid,
3228 exact_unclipped: valid,
3229 column_overshoot_after_line_end: 0,
3230 }
3231 }
3232
3233 pub fn as_valid(&self) -> Option<DisplayPoint> {
3234 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3235 Some(self.previous_valid)
3236 } else {
3237 None
3238 }
3239 }
3240}
3241
3242impl PositionMap {
3243 fn point_for_position(
3244 &self,
3245 text_bounds: Bounds<Pixels>,
3246 position: gpui::Point<Pixels>,
3247 ) -> PointForPosition {
3248 let scroll_position = self.snapshot.scroll_position();
3249 let position = position - text_bounds.origin;
3250 let y = position.y.max(px(0.)).min(self.size.height);
3251 let x = position.x + (scroll_position.x * self.em_width);
3252 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3253
3254 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3255 .line_layouts
3256 .get(row as usize - scroll_position.y as usize)
3257 .map(|&LineWithInvisibles { ref line, .. }| line)
3258 {
3259 if let Some(ix) = line.index_for_x(x) {
3260 (ix as u32, px(0.))
3261 } else {
3262 (line.len as u32, px(0.).max(x - line.width))
3263 }
3264 } else {
3265 (0, x)
3266 };
3267
3268 let mut exact_unclipped = DisplayPoint::new(row, column);
3269 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3270 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3271
3272 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3273 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3274 PointForPosition {
3275 previous_valid,
3276 next_valid,
3277 exact_unclipped,
3278 column_overshoot_after_line_end,
3279 }
3280 }
3281}
3282
3283struct BlockLayout {
3284 row: u32,
3285 element: AnyElement,
3286 available_space: Size<AvailableSpace>,
3287 style: BlockStyle,
3288}
3289
3290fn layout_line(
3291 row: u32,
3292 snapshot: &EditorSnapshot,
3293 style: &EditorStyle,
3294 cx: &WindowContext,
3295) -> Result<ShapedLine> {
3296 let mut line = snapshot.line(row);
3297
3298 if line.len() > MAX_LINE_LEN {
3299 let mut len = MAX_LINE_LEN;
3300 while !line.is_char_boundary(len) {
3301 len -= 1;
3302 }
3303
3304 line.truncate(len);
3305 }
3306
3307 cx.text_system().shape_line(
3308 line.into(),
3309 style.text.font_size.to_pixels(cx.rem_size()),
3310 &[TextRun {
3311 len: snapshot.line_len(row) as usize,
3312 font: style.text.font(),
3313 color: Hsla::default(),
3314 background_color: None,
3315 underline: None,
3316 }],
3317 )
3318}
3319
3320#[derive(Debug)]
3321pub struct Cursor {
3322 origin: gpui::Point<Pixels>,
3323 block_width: Pixels,
3324 line_height: Pixels,
3325 color: Hsla,
3326 shape: CursorShape,
3327 block_text: Option<ShapedLine>,
3328 cursor_name: Option<CursorName>,
3329}
3330
3331#[derive(Debug)]
3332pub struct CursorName {
3333 string: SharedString,
3334 color: Hsla,
3335 is_top_row: bool,
3336 z_index: u16,
3337}
3338
3339impl Cursor {
3340 pub fn new(
3341 origin: gpui::Point<Pixels>,
3342 block_width: Pixels,
3343 line_height: Pixels,
3344 color: Hsla,
3345 shape: CursorShape,
3346 block_text: Option<ShapedLine>,
3347 cursor_name: Option<CursorName>,
3348 ) -> Cursor {
3349 Cursor {
3350 origin,
3351 block_width,
3352 line_height,
3353 color,
3354 shape,
3355 block_text,
3356 cursor_name,
3357 }
3358 }
3359
3360 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3361 Bounds {
3362 origin: self.origin + origin,
3363 size: size(self.block_width, self.line_height),
3364 }
3365 }
3366
3367 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3368 let bounds = match self.shape {
3369 CursorShape::Bar => Bounds {
3370 origin: self.origin + origin,
3371 size: size(px(2.0), self.line_height),
3372 },
3373 CursorShape::Block | CursorShape::Hollow => Bounds {
3374 origin: self.origin + origin,
3375 size: size(self.block_width, self.line_height),
3376 },
3377 CursorShape::Underscore => Bounds {
3378 origin: self.origin
3379 + origin
3380 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3381 size: size(self.block_width, px(2.0)),
3382 },
3383 };
3384
3385 //Draw background or border quad
3386 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3387 outline(bounds, self.color)
3388 } else {
3389 fill(bounds, self.color)
3390 };
3391
3392 if let Some(name) = &self.cursor_name {
3393 let text_size = self.line_height / 1.5;
3394
3395 let name_origin = if name.is_top_row {
3396 point(bounds.right() - px(1.), bounds.top())
3397 } else {
3398 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3399 };
3400 cx.with_z_index(name.z_index, |cx| {
3401 div()
3402 .bg(self.color)
3403 .text_size(text_size)
3404 .px_0p5()
3405 .line_height(text_size + px(2.))
3406 .text_color(name.color)
3407 .child(name.string.clone())
3408 .into_any_element()
3409 .draw(
3410 name_origin,
3411 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3412 cx,
3413 )
3414 })
3415 }
3416
3417 cx.paint_quad(cursor);
3418
3419 if let Some(block_text) = &self.block_text {
3420 block_text
3421 .paint(self.origin + origin, self.line_height, cx)
3422 .log_err();
3423 }
3424 }
3425
3426 pub fn shape(&self) -> CursorShape {
3427 self.shape
3428 }
3429}
3430
3431#[derive(Debug)]
3432pub struct HighlightedRange {
3433 pub start_y: Pixels,
3434 pub line_height: Pixels,
3435 pub lines: Vec<HighlightedRangeLine>,
3436 pub color: Hsla,
3437 pub corner_radius: Pixels,
3438}
3439
3440#[derive(Debug)]
3441pub struct HighlightedRangeLine {
3442 pub start_x: Pixels,
3443 pub end_x: Pixels,
3444}
3445
3446impl HighlightedRange {
3447 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3448 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3449 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3450 self.paint_lines(
3451 self.start_y + self.line_height,
3452 &self.lines[1..],
3453 bounds,
3454 cx,
3455 );
3456 } else {
3457 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3458 }
3459 }
3460
3461 fn paint_lines(
3462 &self,
3463 start_y: Pixels,
3464 lines: &[HighlightedRangeLine],
3465 _bounds: Bounds<Pixels>,
3466 cx: &mut ElementContext,
3467 ) {
3468 if lines.is_empty() {
3469 return;
3470 }
3471
3472 let first_line = lines.first().unwrap();
3473 let last_line = lines.last().unwrap();
3474
3475 let first_top_left = point(first_line.start_x, start_y);
3476 let first_top_right = point(first_line.end_x, start_y);
3477
3478 let curve_height = point(Pixels::ZERO, self.corner_radius);
3479 let curve_width = |start_x: Pixels, end_x: Pixels| {
3480 let max = (end_x - start_x) / 2.;
3481 let width = if max < self.corner_radius {
3482 max
3483 } else {
3484 self.corner_radius
3485 };
3486
3487 point(width, Pixels::ZERO)
3488 };
3489
3490 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3491 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3492 path.curve_to(first_top_right + curve_height, first_top_right);
3493
3494 let mut iter = lines.iter().enumerate().peekable();
3495 while let Some((ix, line)) = iter.next() {
3496 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3497
3498 if let Some((_, next_line)) = iter.peek() {
3499 let next_top_right = point(next_line.end_x, bottom_right.y);
3500
3501 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3502 Ordering::Equal => {
3503 path.line_to(bottom_right);
3504 }
3505 Ordering::Less => {
3506 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3507 path.line_to(bottom_right - curve_height);
3508 if self.corner_radius > Pixels::ZERO {
3509 path.curve_to(bottom_right - curve_width, bottom_right);
3510 }
3511 path.line_to(next_top_right + curve_width);
3512 if self.corner_radius > Pixels::ZERO {
3513 path.curve_to(next_top_right + curve_height, next_top_right);
3514 }
3515 }
3516 Ordering::Greater => {
3517 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3518 path.line_to(bottom_right - curve_height);
3519 if self.corner_radius > Pixels::ZERO {
3520 path.curve_to(bottom_right + curve_width, bottom_right);
3521 }
3522 path.line_to(next_top_right - curve_width);
3523 if self.corner_radius > Pixels::ZERO {
3524 path.curve_to(next_top_right + curve_height, next_top_right);
3525 }
3526 }
3527 }
3528 } else {
3529 let curve_width = curve_width(line.start_x, line.end_x);
3530 path.line_to(bottom_right - curve_height);
3531 if self.corner_radius > Pixels::ZERO {
3532 path.curve_to(bottom_right - curve_width, bottom_right);
3533 }
3534
3535 let bottom_left = point(line.start_x, bottom_right.y);
3536 path.line_to(bottom_left + curve_width);
3537 if self.corner_radius > Pixels::ZERO {
3538 path.curve_to(bottom_left - curve_height, bottom_left);
3539 }
3540 }
3541 }
3542
3543 if first_line.start_x > last_line.start_x {
3544 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3545 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3546 path.line_to(second_top_left + curve_height);
3547 if self.corner_radius > Pixels::ZERO {
3548 path.curve_to(second_top_left + curve_width, second_top_left);
3549 }
3550 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3551 path.line_to(first_bottom_left - curve_width);
3552 if self.corner_radius > Pixels::ZERO {
3553 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3554 }
3555 }
3556
3557 path.line_to(first_top_left + curve_height);
3558 if self.corner_radius > Pixels::ZERO {
3559 path.curve_to(first_top_left + top_curve_width, first_top_left);
3560 }
3561 path.line_to(first_top_right - top_curve_width);
3562
3563 cx.paint_path(path, self.color);
3564 }
3565}
3566
3567pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3568 (delta.pow(1.5) / 100.0).into()
3569}
3570
3571fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3572 (delta.pow(1.2) / 300.0).into()
3573}
3574
3575#[cfg(test)]
3576mod tests {
3577 use super::*;
3578 use crate::{
3579 display_map::{BlockDisposition, BlockProperties},
3580 editor_tests::{init_test, update_test_language_settings},
3581 Editor, MultiBuffer,
3582 };
3583 use gpui::TestAppContext;
3584 use language::language_settings;
3585 use log::info;
3586 use std::{num::NonZeroU32, sync::Arc};
3587 use util::test::sample_text;
3588
3589 #[gpui::test]
3590 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3591 init_test(cx, |_| {});
3592 let window = cx.add_window(|cx| {
3593 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3594 Editor::new(EditorMode::Full, buffer, None, cx)
3595 });
3596
3597 let editor = window.root(cx).unwrap();
3598 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3599 let element = EditorElement::new(&editor, style);
3600
3601 let layouts = window
3602 .update(cx, |editor, cx| {
3603 let snapshot = editor.snapshot(cx);
3604 element
3605 .shape_line_numbers(
3606 0..6,
3607 &Default::default(),
3608 DisplayPoint::new(0, 0),
3609 false,
3610 &snapshot,
3611 cx,
3612 )
3613 .0
3614 })
3615 .unwrap();
3616 assert_eq!(layouts.len(), 6);
3617
3618 let relative_rows = window
3619 .update(cx, |editor, cx| {
3620 let snapshot = editor.snapshot(cx);
3621 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3622 })
3623 .unwrap();
3624 assert_eq!(relative_rows[&0], 3);
3625 assert_eq!(relative_rows[&1], 2);
3626 assert_eq!(relative_rows[&2], 1);
3627 // current line has no relative number
3628 assert_eq!(relative_rows[&4], 1);
3629 assert_eq!(relative_rows[&5], 2);
3630
3631 // works if cursor is before screen
3632 let relative_rows = window
3633 .update(cx, |editor, cx| {
3634 let snapshot = editor.snapshot(cx);
3635
3636 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3637 })
3638 .unwrap();
3639 assert_eq!(relative_rows.len(), 3);
3640 assert_eq!(relative_rows[&3], 2);
3641 assert_eq!(relative_rows[&4], 3);
3642 assert_eq!(relative_rows[&5], 4);
3643
3644 // works if cursor is after screen
3645 let relative_rows = window
3646 .update(cx, |editor, cx| {
3647 let snapshot = editor.snapshot(cx);
3648
3649 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3650 })
3651 .unwrap();
3652 assert_eq!(relative_rows.len(), 3);
3653 assert_eq!(relative_rows[&0], 5);
3654 assert_eq!(relative_rows[&1], 4);
3655 assert_eq!(relative_rows[&2], 3);
3656 }
3657
3658 #[gpui::test]
3659 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3660 init_test(cx, |_| {});
3661
3662 let window = cx.add_window(|cx| {
3663 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3664 Editor::new(EditorMode::Full, buffer, None, cx)
3665 });
3666 let editor = window.root(cx).unwrap();
3667 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3668 let mut element = EditorElement::new(&editor, style);
3669
3670 window
3671 .update(cx, |editor, cx| {
3672 editor.cursor_shape = CursorShape::Block;
3673 editor.change_selections(None, cx, |s| {
3674 s.select_ranges([
3675 Point::new(0, 0)..Point::new(1, 0),
3676 Point::new(3, 2)..Point::new(3, 3),
3677 Point::new(5, 6)..Point::new(6, 0),
3678 ]);
3679 });
3680 })
3681 .unwrap();
3682 let state = cx
3683 .update_window(window.into(), |view, cx| {
3684 cx.with_element_context(|cx| {
3685 cx.with_view_id(view.entity_id(), |cx| {
3686 element.compute_layout(
3687 Bounds {
3688 origin: point(px(500.), px(500.)),
3689 size: size(px(500.), px(500.)),
3690 },
3691 cx,
3692 )
3693 })
3694 })
3695 })
3696 .unwrap();
3697
3698 assert_eq!(state.selections.len(), 1);
3699 let local_selections = &state.selections[0].1;
3700 assert_eq!(local_selections.len(), 3);
3701 // moves cursor back one line
3702 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3703 assert_eq!(
3704 local_selections[0].range,
3705 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3706 );
3707
3708 // moves cursor back one column
3709 assert_eq!(
3710 local_selections[1].range,
3711 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3712 );
3713 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3714
3715 // leaves cursor on the max point
3716 assert_eq!(
3717 local_selections[2].range,
3718 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3719 );
3720 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3721
3722 // active lines does not include 1 (even though the range of the selection does)
3723 assert_eq!(
3724 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3725 vec![0, 3, 5, 6]
3726 );
3727
3728 // multi-buffer support
3729 // in DisplayPoint coordinates, this is what we're dealing with:
3730 // 0: [[file
3731 // 1: header]]
3732 // 2: aaaaaa
3733 // 3: bbbbbb
3734 // 4: cccccc
3735 // 5:
3736 // 6: ...
3737 // 7: ffffff
3738 // 8: gggggg
3739 // 9: hhhhhh
3740 // 10:
3741 // 11: [[file
3742 // 12: header]]
3743 // 13: bbbbbb
3744 // 14: cccccc
3745 // 15: dddddd
3746 let window = cx.add_window(|cx| {
3747 let buffer = MultiBuffer::build_multi(
3748 [
3749 (
3750 &(sample_text(8, 6, 'a') + "\n"),
3751 vec![
3752 Point::new(0, 0)..Point::new(3, 0),
3753 Point::new(4, 0)..Point::new(7, 0),
3754 ],
3755 ),
3756 (
3757 &(sample_text(8, 6, 'a') + "\n"),
3758 vec![Point::new(1, 0)..Point::new(3, 0)],
3759 ),
3760 ],
3761 cx,
3762 );
3763 Editor::new(EditorMode::Full, buffer, None, cx)
3764 });
3765 let editor = window.root(cx).unwrap();
3766 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3767 let mut element = EditorElement::new(&editor, style);
3768 let _state = window.update(cx, |editor, cx| {
3769 editor.cursor_shape = CursorShape::Block;
3770 editor.change_selections(None, cx, |s| {
3771 s.select_display_ranges([
3772 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3773 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3774 ]);
3775 });
3776 });
3777
3778 let state = cx
3779 .update_window(window.into(), |view, cx| {
3780 cx.with_element_context(|cx| {
3781 cx.with_view_id(view.entity_id(), |cx| {
3782 element.compute_layout(
3783 Bounds {
3784 origin: point(px(500.), px(500.)),
3785 size: size(px(500.), px(500.)),
3786 },
3787 cx,
3788 )
3789 })
3790 })
3791 })
3792 .unwrap();
3793 assert_eq!(state.selections.len(), 1);
3794 let local_selections = &state.selections[0].1;
3795 assert_eq!(local_selections.len(), 2);
3796
3797 // moves cursor on excerpt boundary back a line
3798 // and doesn't allow selection to bleed through
3799 assert_eq!(
3800 local_selections[0].range,
3801 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3802 );
3803 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3804 // moves cursor on buffer boundary back two lines
3805 // and doesn't allow selection to bleed through
3806 assert_eq!(
3807 local_selections[1].range,
3808 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3809 );
3810 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3811 }
3812
3813 #[gpui::test]
3814 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3815 init_test(cx, |_| {});
3816
3817 let window = cx.add_window(|cx| {
3818 let buffer = MultiBuffer::build_simple("", cx);
3819 Editor::new(EditorMode::Full, buffer, None, cx)
3820 });
3821 let editor = window.root(cx).unwrap();
3822 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3823 window
3824 .update(cx, |editor, cx| {
3825 editor.set_placeholder_text("hello", cx);
3826 editor.insert_blocks(
3827 [BlockProperties {
3828 style: BlockStyle::Fixed,
3829 disposition: BlockDisposition::Above,
3830 height: 3,
3831 position: Anchor::min(),
3832 render: Arc::new(|_| div().into_any()),
3833 }],
3834 None,
3835 cx,
3836 );
3837
3838 // Blur the editor so that it displays placeholder text.
3839 cx.blur();
3840 })
3841 .unwrap();
3842
3843 let mut element = EditorElement::new(&editor, style);
3844 let state = cx
3845 .update_window(window.into(), |view, cx| {
3846 cx.with_element_context(|cx| {
3847 cx.with_view_id(view.entity_id(), |cx| {
3848 element.compute_layout(
3849 Bounds {
3850 origin: point(px(500.), px(500.)),
3851 size: size(px(500.), px(500.)),
3852 },
3853 cx,
3854 )
3855 })
3856 })
3857 })
3858 .unwrap();
3859 let size = state.position_map.size;
3860
3861 assert_eq!(state.position_map.line_layouts.len(), 4);
3862 assert_eq!(
3863 state
3864 .line_numbers
3865 .iter()
3866 .map(Option::is_some)
3867 .collect::<Vec<_>>(),
3868 &[false, false, false, true]
3869 );
3870
3871 // Don't panic.
3872 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3873 cx.update_window(window.into(), |_, cx| {
3874 cx.with_element_context(|cx| element.paint(bounds, &mut (), cx))
3875 })
3876 .unwrap()
3877 }
3878
3879 #[gpui::test]
3880 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3881 const TAB_SIZE: u32 = 4;
3882
3883 let input_text = "\t \t|\t| a b";
3884 let expected_invisibles = vec![
3885 Invisible::Tab {
3886 line_start_offset: 0,
3887 },
3888 Invisible::Whitespace {
3889 line_offset: TAB_SIZE as usize,
3890 },
3891 Invisible::Tab {
3892 line_start_offset: TAB_SIZE as usize + 1,
3893 },
3894 Invisible::Tab {
3895 line_start_offset: TAB_SIZE as usize * 2 + 1,
3896 },
3897 Invisible::Whitespace {
3898 line_offset: TAB_SIZE as usize * 3 + 1,
3899 },
3900 Invisible::Whitespace {
3901 line_offset: TAB_SIZE as usize * 3 + 3,
3902 },
3903 ];
3904 assert_eq!(
3905 expected_invisibles.len(),
3906 input_text
3907 .chars()
3908 .filter(|initial_char| initial_char.is_whitespace())
3909 .count(),
3910 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3911 );
3912
3913 init_test(cx, |s| {
3914 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3915 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3916 });
3917
3918 let actual_invisibles =
3919 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3920
3921 assert_eq!(expected_invisibles, actual_invisibles);
3922 }
3923
3924 #[gpui::test]
3925 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3926 init_test(cx, |s| {
3927 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3928 s.defaults.tab_size = NonZeroU32::new(4);
3929 });
3930
3931 for editor_mode_without_invisibles in [
3932 EditorMode::SingleLine,
3933 EditorMode::AutoHeight { max_lines: 100 },
3934 ] {
3935 let invisibles = collect_invisibles_from_new_editor(
3936 cx,
3937 editor_mode_without_invisibles,
3938 "\t\t\t| | a b",
3939 px(500.0),
3940 );
3941 assert!(invisibles.is_empty(),
3942 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3943 }
3944 }
3945
3946 #[gpui::test]
3947 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3948 let tab_size = 4;
3949 let input_text = "a\tbcd ".repeat(9);
3950 let repeated_invisibles = [
3951 Invisible::Tab {
3952 line_start_offset: 1,
3953 },
3954 Invisible::Whitespace {
3955 line_offset: tab_size as usize + 3,
3956 },
3957 Invisible::Whitespace {
3958 line_offset: tab_size as usize + 4,
3959 },
3960 Invisible::Whitespace {
3961 line_offset: tab_size as usize + 5,
3962 },
3963 ];
3964 let expected_invisibles = std::iter::once(repeated_invisibles)
3965 .cycle()
3966 .take(9)
3967 .flatten()
3968 .collect::<Vec<_>>();
3969 assert_eq!(
3970 expected_invisibles.len(),
3971 input_text
3972 .chars()
3973 .filter(|initial_char| initial_char.is_whitespace())
3974 .count(),
3975 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3976 );
3977 info!("Expected invisibles: {expected_invisibles:?}");
3978
3979 init_test(cx, |_| {});
3980
3981 // Put the same string with repeating whitespace pattern into editors of various size,
3982 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3983 let resize_step = 10.0;
3984 let mut editor_width = 200.0;
3985 while editor_width <= 1000.0 {
3986 update_test_language_settings(cx, |s| {
3987 s.defaults.tab_size = NonZeroU32::new(tab_size);
3988 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3989 s.defaults.preferred_line_length = Some(editor_width as u32);
3990 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3991 });
3992
3993 let actual_invisibles = collect_invisibles_from_new_editor(
3994 cx,
3995 EditorMode::Full,
3996 &input_text,
3997 px(editor_width),
3998 );
3999
4000 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4001 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4002 let mut i = 0;
4003 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4004 i = actual_index;
4005 match expected_invisibles.get(i) {
4006 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4007 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4008 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4009 _ => {
4010 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4011 }
4012 },
4013 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4014 }
4015 }
4016 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4017 assert!(
4018 missing_expected_invisibles.is_empty(),
4019 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4020 );
4021
4022 editor_width += resize_step;
4023 }
4024 }
4025
4026 fn collect_invisibles_from_new_editor(
4027 cx: &mut TestAppContext,
4028 editor_mode: EditorMode,
4029 input_text: &str,
4030 editor_width: Pixels,
4031 ) -> Vec<Invisible> {
4032 info!(
4033 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4034 editor_width.0
4035 );
4036 let window = cx.add_window(|cx| {
4037 let buffer = MultiBuffer::build_simple(&input_text, cx);
4038 Editor::new(editor_mode, buffer, None, cx)
4039 });
4040 let editor = window.root(cx).unwrap();
4041 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4042 let mut element = EditorElement::new(&editor, style);
4043 window
4044 .update(cx, |editor, cx| {
4045 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4046 editor.set_wrap_width(Some(editor_width), cx);
4047 })
4048 .unwrap();
4049 let layout_state = cx
4050 .update_window(window.into(), |_, cx| {
4051 cx.with_element_context(|cx| {
4052 element.compute_layout(
4053 Bounds {
4054 origin: point(px(500.), px(500.)),
4055 size: size(px(500.), px(500.)),
4056 },
4057 cx,
4058 )
4059 })
4060 })
4061 .unwrap();
4062
4063 layout_state
4064 .position_map
4065 .line_layouts
4066 .iter()
4067 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
4068 .flatten()
4069 .cloned()
4070 .collect()
4071 }
4072}
4073
4074pub fn register_action<T: Action>(
4075 view: &View<Editor>,
4076 cx: &mut WindowContext,
4077 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4078) {
4079 let view = view.clone();
4080 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4081 let action = action.downcast_ref().unwrap();
4082 if phase == DispatchPhase::Bubble {
4083 view.update(cx, |editor, cx| {
4084 listener(editor, action, cx);
4085 })
4086 }
4087 })
4088}
4089
4090fn compute_auto_height_layout(
4091 editor: &mut Editor,
4092 max_lines: usize,
4093 max_line_number_width: Pixels,
4094 known_dimensions: Size<Option<Pixels>>,
4095 cx: &mut ViewContext<Editor>,
4096) -> Option<Size<Pixels>> {
4097 let width = known_dimensions.width?;
4098 if let Some(height) = known_dimensions.height {
4099 return Some(size(width, height));
4100 }
4101
4102 let style = editor.style.as_ref().unwrap();
4103 let font_id = cx.text_system().resolve_font(&style.text.font());
4104 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4105 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4106 let em_width = cx
4107 .text_system()
4108 .typographic_bounds(font_id, font_size, 'm')
4109 .unwrap()
4110 .size
4111 .width;
4112
4113 let mut snapshot = editor.snapshot(cx);
4114 let gutter_dimensions =
4115 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4116
4117 editor.gutter_width = gutter_dimensions.width;
4118 let text_width = width - gutter_dimensions.width;
4119 let overscroll = size(em_width, px(0.));
4120
4121 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4122 if editor.set_wrap_width(Some(editor_width), cx) {
4123 snapshot = editor.snapshot(cx);
4124 }
4125
4126 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4127 let height = scroll_height
4128 .max(line_height)
4129 .min(line_height * max_lines as f32);
4130
4131 Some(size(width, height))
4132}