1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::ShowScrollbar,
7 git::{diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::{
9 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
10 },
11 items::BufferSearchHighlights,
12 mouse_context_menu,
13 scroll::scroll_amount::ScrollAmount,
14 CursorShape, DisplayPoint, DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode,
15 EditorSettings, EditorSnapshot, EditorStyle, GutterDimensions, HalfPageDown, HalfPageUp,
16 HoveredCursor, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, SelectPhase, Selection,
17 SoftWrap, ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
18};
19use anyhow::Result;
20use collections::{BTreeMap, HashMap};
21use git::diff::DiffHunkStatus;
22use gpui::{
23 div, fill, outline, overlay, point, px, quad, relative, size, transparent_black, Action,
24 AnchorCorner, AnyElement, AvailableSpace, Bounds, ContentMask, Corners, CursorStyle,
25 DispatchPhase, Edges, Element, ElementContext, ElementInputHandler, Entity, Hitbox, Hsla,
26 InteractiveElement, IntoElement, ModifiersChangedEvent, MouseButton, MouseDownEvent,
27 MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine,
28 SharedString, Size, Stateful, StatefulInteractiveElement, Style, Styled, TextRun, TextStyle,
29 TextStyleRefinement, View, ViewContext, WindowContext,
30};
31use itertools::Itertools;
32use language::language_settings::ShowWhitespaceSetting;
33use lsp::DiagnosticSeverity;
34use multi_buffer::Anchor;
35use project::{
36 project_settings::{GitGutterSetting, ProjectSettings},
37 ProjectPath,
38};
39use settings::Settings;
40use smallvec::SmallVec;
41use std::{
42 any::TypeId,
43 borrow::Cow,
44 cmp::{self, Ordering},
45 fmt::Write,
46 iter, mem,
47 ops::Range,
48 sync::Arc,
49};
50use sum_tree::Bias;
51use theme::{ActiveTheme, PlayerColor};
52use ui::prelude::*;
53use ui::{h_flex, ButtonLike, ButtonStyle, Tooltip};
54use util::ResultExt;
55use workspace::item::Item;
56
57struct SelectionLayout {
58 head: DisplayPoint,
59 cursor_shape: CursorShape,
60 is_newest: bool,
61 is_local: bool,
62 range: Range<DisplayPoint>,
63 active_rows: Range<u32>,
64 user_name: Option<SharedString>,
65}
66
67impl SelectionLayout {
68 fn new<T: ToPoint + ToDisplayPoint + Clone>(
69 selection: Selection<T>,
70 line_mode: bool,
71 cursor_shape: CursorShape,
72 map: &DisplaySnapshot,
73 is_newest: bool,
74 is_local: bool,
75 user_name: Option<SharedString>,
76 ) -> Self {
77 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
78 let display_selection = point_selection.map(|p| p.to_display_point(map));
79 let mut range = display_selection.range();
80 let mut head = display_selection.head();
81 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
82 ..map.next_line_boundary(point_selection.end).1.row();
83
84 // vim visual line mode
85 if line_mode {
86 let point_range = map.expand_to_line(point_selection.range());
87 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
88 }
89
90 // any vim visual mode (including line mode)
91 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
92 if head.column() > 0 {
93 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
94 } else if head.row() > 0 && head != map.max_point() {
95 head = map.clip_point(
96 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
97 Bias::Left,
98 );
99 // updating range.end is a no-op unless you're cursor is
100 // on the newline containing a multi-buffer divider
101 // in which case the clip_point may have moved the head up
102 // an additional row.
103 range.end = DisplayPoint::new(head.row() + 1, 0);
104 active_rows.end = head.row();
105 }
106 }
107
108 Self {
109 head,
110 cursor_shape,
111 is_newest,
112 is_local,
113 range,
114 active_rows,
115 user_name,
116 }
117 }
118}
119
120pub struct EditorElement {
121 editor: View<Editor>,
122 style: EditorStyle,
123}
124
125impl EditorElement {
126 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
127 Self {
128 editor: editor.clone(),
129 style,
130 }
131 }
132
133 fn register_actions(&self, cx: &mut WindowContext) {
134 let view = &self.editor;
135 view.update(cx, |editor, cx| {
136 for action in editor.editor_actions.iter() {
137 (action)(cx)
138 }
139 });
140
141 crate::rust_analyzer_ext::apply_related_actions(view, cx);
142 register_action(view, cx, Editor::move_left);
143 register_action(view, cx, Editor::move_right);
144 register_action(view, cx, Editor::move_down);
145 register_action(view, cx, Editor::move_down_by_lines);
146 register_action(view, cx, Editor::select_down_by_lines);
147 register_action(view, cx, Editor::move_up);
148 register_action(view, cx, Editor::move_up_by_lines);
149 register_action(view, cx, Editor::select_up_by_lines);
150 register_action(view, cx, Editor::cancel);
151 register_action(view, cx, Editor::newline);
152 register_action(view, cx, Editor::newline_above);
153 register_action(view, cx, Editor::newline_below);
154 register_action(view, cx, Editor::backspace);
155 register_action(view, cx, Editor::delete);
156 register_action(view, cx, Editor::tab);
157 register_action(view, cx, Editor::tab_prev);
158 register_action(view, cx, Editor::indent);
159 register_action(view, cx, Editor::outdent);
160 register_action(view, cx, Editor::delete_line);
161 register_action(view, cx, Editor::join_lines);
162 register_action(view, cx, Editor::sort_lines_case_sensitive);
163 register_action(view, cx, Editor::sort_lines_case_insensitive);
164 register_action(view, cx, Editor::reverse_lines);
165 register_action(view, cx, Editor::shuffle_lines);
166 register_action(view, cx, Editor::convert_to_upper_case);
167 register_action(view, cx, Editor::convert_to_lower_case);
168 register_action(view, cx, Editor::convert_to_title_case);
169 register_action(view, cx, Editor::convert_to_snake_case);
170 register_action(view, cx, Editor::convert_to_kebab_case);
171 register_action(view, cx, Editor::convert_to_upper_camel_case);
172 register_action(view, cx, Editor::convert_to_lower_camel_case);
173 register_action(view, cx, Editor::delete_to_previous_word_start);
174 register_action(view, cx, Editor::delete_to_previous_subword_start);
175 register_action(view, cx, Editor::delete_to_next_word_end);
176 register_action(view, cx, Editor::delete_to_next_subword_end);
177 register_action(view, cx, Editor::delete_to_beginning_of_line);
178 register_action(view, cx, Editor::delete_to_end_of_line);
179 register_action(view, cx, Editor::cut_to_end_of_line);
180 register_action(view, cx, Editor::duplicate_line);
181 register_action(view, cx, Editor::move_line_up);
182 register_action(view, cx, Editor::move_line_down);
183 register_action(view, cx, Editor::transpose);
184 register_action(view, cx, Editor::cut);
185 register_action(view, cx, Editor::copy);
186 register_action(view, cx, Editor::paste);
187 register_action(view, cx, Editor::undo);
188 register_action(view, cx, Editor::redo);
189 register_action(view, cx, Editor::move_page_up);
190 register_action(view, cx, Editor::move_page_down);
191 register_action(view, cx, Editor::next_screen);
192 register_action(view, cx, Editor::scroll_cursor_top);
193 register_action(view, cx, Editor::scroll_cursor_center);
194 register_action(view, cx, Editor::scroll_cursor_bottom);
195 register_action(view, cx, |editor, _: &LineDown, cx| {
196 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
197 });
198 register_action(view, cx, |editor, _: &LineUp, cx| {
199 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
200 });
201 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
202 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
203 });
204 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
205 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
206 });
207 register_action(view, cx, |editor, _: &PageDown, cx| {
208 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
209 });
210 register_action(view, cx, |editor, _: &PageUp, cx| {
211 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
212 });
213 register_action(view, cx, Editor::move_to_previous_word_start);
214 register_action(view, cx, Editor::move_to_previous_subword_start);
215 register_action(view, cx, Editor::move_to_next_word_end);
216 register_action(view, cx, Editor::move_to_next_subword_end);
217 register_action(view, cx, Editor::move_to_beginning_of_line);
218 register_action(view, cx, Editor::move_to_end_of_line);
219 register_action(view, cx, Editor::move_to_start_of_paragraph);
220 register_action(view, cx, Editor::move_to_end_of_paragraph);
221 register_action(view, cx, Editor::move_to_beginning);
222 register_action(view, cx, Editor::move_to_end);
223 register_action(view, cx, Editor::select_up);
224 register_action(view, cx, Editor::select_down);
225 register_action(view, cx, Editor::select_left);
226 register_action(view, cx, Editor::select_right);
227 register_action(view, cx, Editor::select_to_previous_word_start);
228 register_action(view, cx, Editor::select_to_previous_subword_start);
229 register_action(view, cx, Editor::select_to_next_word_end);
230 register_action(view, cx, Editor::select_to_next_subword_end);
231 register_action(view, cx, Editor::select_to_beginning_of_line);
232 register_action(view, cx, Editor::select_to_end_of_line);
233 register_action(view, cx, Editor::select_to_start_of_paragraph);
234 register_action(view, cx, Editor::select_to_end_of_paragraph);
235 register_action(view, cx, Editor::select_to_beginning);
236 register_action(view, cx, Editor::select_to_end);
237 register_action(view, cx, Editor::select_all);
238 register_action(view, cx, |editor, action, cx| {
239 editor.select_all_matches(action, cx).log_err();
240 });
241 register_action(view, cx, Editor::select_line);
242 register_action(view, cx, Editor::split_selection_into_lines);
243 register_action(view, cx, Editor::add_selection_above);
244 register_action(view, cx, Editor::add_selection_below);
245 register_action(view, cx, |editor, action, cx| {
246 editor.select_next(action, cx).log_err();
247 });
248 register_action(view, cx, |editor, action, cx| {
249 editor.select_previous(action, cx).log_err();
250 });
251 register_action(view, cx, Editor::toggle_comments);
252 register_action(view, cx, Editor::select_larger_syntax_node);
253 register_action(view, cx, Editor::select_smaller_syntax_node);
254 register_action(view, cx, Editor::move_to_enclosing_bracket);
255 register_action(view, cx, Editor::undo_selection);
256 register_action(view, cx, Editor::redo_selection);
257 register_action(view, cx, Editor::go_to_diagnostic);
258 register_action(view, cx, Editor::go_to_prev_diagnostic);
259 register_action(view, cx, Editor::go_to_hunk);
260 register_action(view, cx, Editor::go_to_prev_hunk);
261 register_action(view, cx, Editor::go_to_definition);
262 register_action(view, cx, Editor::go_to_definition_split);
263 register_action(view, cx, Editor::go_to_implementation);
264 register_action(view, cx, Editor::go_to_implementation_split);
265 register_action(view, cx, Editor::go_to_type_definition);
266 register_action(view, cx, Editor::go_to_type_definition_split);
267 register_action(view, cx, Editor::open_url);
268 register_action(view, cx, Editor::fold);
269 register_action(view, cx, Editor::fold_at);
270 register_action(view, cx, Editor::unfold_lines);
271 register_action(view, cx, Editor::unfold_at);
272 register_action(view, cx, Editor::fold_selected_ranges);
273 register_action(view, cx, Editor::show_completions);
274 register_action(view, cx, Editor::toggle_code_actions);
275 register_action(view, cx, Editor::open_excerpts);
276 register_action(view, cx, Editor::open_excerpts_in_split);
277 register_action(view, cx, Editor::toggle_soft_wrap);
278 register_action(view, cx, Editor::toggle_line_numbers);
279 register_action(view, cx, Editor::toggle_inlay_hints);
280 register_action(view, cx, hover_popover::hover);
281 register_action(view, cx, Editor::reveal_in_finder);
282 register_action(view, cx, Editor::copy_path);
283 register_action(view, cx, Editor::copy_relative_path);
284 register_action(view, cx, Editor::copy_highlight_json);
285 register_action(view, cx, Editor::copy_permalink_to_line);
286 register_action(view, cx, Editor::open_permalink_to_line);
287 register_action(view, cx, |editor, action, cx| {
288 if let Some(task) = editor.format(action, cx) {
289 task.detach_and_log_err(cx);
290 } else {
291 cx.propagate();
292 }
293 });
294 register_action(view, cx, Editor::restart_language_server);
295 register_action(view, cx, Editor::show_character_palette);
296 register_action(view, cx, |editor, action, cx| {
297 if let Some(task) = editor.confirm_completion(action, cx) {
298 task.detach_and_log_err(cx);
299 } else {
300 cx.propagate();
301 }
302 });
303 register_action(view, cx, |editor, action, cx| {
304 if let Some(task) = editor.confirm_code_action(action, cx) {
305 task.detach_and_log_err(cx);
306 } else {
307 cx.propagate();
308 }
309 });
310 register_action(view, cx, |editor, action, cx| {
311 if let Some(task) = editor.rename(action, cx) {
312 task.detach_and_log_err(cx);
313 } else {
314 cx.propagate();
315 }
316 });
317 register_action(view, cx, |editor, action, cx| {
318 if let Some(task) = editor.confirm_rename(action, cx) {
319 task.detach_and_log_err(cx);
320 } else {
321 cx.propagate();
322 }
323 });
324 register_action(view, cx, |editor, action, cx| {
325 if let Some(task) = editor.find_all_references(action, cx) {
326 task.detach_and_log_err(cx);
327 } else {
328 cx.propagate();
329 }
330 });
331 register_action(view, cx, Editor::next_copilot_suggestion);
332 register_action(view, cx, Editor::previous_copilot_suggestion);
333 register_action(view, cx, Editor::copilot_suggest);
334 register_action(view, cx, Editor::context_menu_first);
335 register_action(view, cx, Editor::context_menu_prev);
336 register_action(view, cx, Editor::context_menu_next);
337 register_action(view, cx, Editor::context_menu_last);
338 register_action(view, cx, Editor::display_cursor_names);
339 register_action(view, cx, Editor::unique_lines_case_insensitive);
340 register_action(view, cx, Editor::unique_lines_case_sensitive);
341 register_action(view, cx, Editor::accept_partial_copilot_suggestion);
342 register_action(view, cx, Editor::revert_selected_hunks);
343 }
344
345 fn register_key_listeners(&self, cx: &mut ElementContext, layout: &EditorLayout) {
346 let position_map = layout.position_map.clone();
347 cx.on_key_event({
348 let editor = self.editor.clone();
349 let text_hitbox = layout.text_hitbox.clone();
350 move |event: &ModifiersChangedEvent, phase, cx| {
351 if phase != DispatchPhase::Bubble {
352 return;
353 }
354
355 editor.update(cx, |editor, cx| {
356 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
357 })
358 }
359 });
360 }
361
362 fn modifiers_changed(
363 editor: &mut Editor,
364 event: &ModifiersChangedEvent,
365 position_map: &PositionMap,
366 text_hitbox: &Hitbox,
367 cx: &mut ViewContext<Editor>,
368 ) {
369 let mouse_position = cx.mouse_position();
370 if !text_hitbox.is_hovered(cx) {
371 return;
372 }
373
374 editor.update_hovered_link(
375 position_map.point_for_position(text_hitbox.bounds, mouse_position),
376 &position_map.snapshot,
377 event.modifiers,
378 cx,
379 )
380 }
381
382 fn mouse_left_down(
383 editor: &mut Editor,
384 event: &MouseDownEvent,
385 position_map: &PositionMap,
386 text_hitbox: &Hitbox,
387 gutter_hitbox: &Hitbox,
388 cx: &mut ViewContext<Editor>,
389 ) {
390 if cx.default_prevented() {
391 return;
392 }
393
394 let mut click_count = event.click_count;
395 let modifiers = event.modifiers;
396
397 if gutter_hitbox.is_hovered(cx) {
398 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
399 } else if !text_hitbox.is_hovered(cx) {
400 return;
401 }
402
403 let point_for_position =
404 position_map.point_for_position(text_hitbox.bounds, event.position);
405 let position = point_for_position.previous_valid;
406 if modifiers.shift && modifiers.alt {
407 editor.select(
408 SelectPhase::BeginColumnar {
409 position,
410 goal_column: point_for_position.exact_unclipped.column(),
411 },
412 cx,
413 );
414 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
415 editor.select(
416 SelectPhase::Extend {
417 position,
418 click_count,
419 },
420 cx,
421 );
422 } else {
423 editor.select(
424 SelectPhase::Begin {
425 position,
426 add: modifiers.alt,
427 click_count,
428 },
429 cx,
430 );
431 }
432
433 cx.stop_propagation();
434 }
435
436 fn mouse_right_down(
437 editor: &mut Editor,
438 event: &MouseDownEvent,
439 position_map: &PositionMap,
440 text_hitbox: &Hitbox,
441 cx: &mut ViewContext<Editor>,
442 ) {
443 if !text_hitbox.is_hovered(cx) {
444 return;
445 }
446 let point_for_position =
447 position_map.point_for_position(text_hitbox.bounds, event.position);
448 mouse_context_menu::deploy_context_menu(
449 editor,
450 event.position,
451 point_for_position.previous_valid,
452 cx,
453 );
454 cx.stop_propagation();
455 }
456
457 fn mouse_up(
458 editor: &mut Editor,
459 event: &MouseUpEvent,
460 position_map: &PositionMap,
461 text_hitbox: &Hitbox,
462 cx: &mut ViewContext<Editor>,
463 ) {
464 let end_selection = editor.has_pending_selection();
465 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
466
467 if end_selection {
468 editor.select(SelectPhase::End, cx);
469 }
470
471 if !pending_nonempty_selections && event.modifiers.command && text_hitbox.is_hovered(cx) {
472 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
473 editor.handle_click_hovered_link(point, event.modifiers, cx);
474
475 cx.stop_propagation();
476 } else if end_selection {
477 cx.stop_propagation();
478 }
479 }
480
481 fn mouse_dragged(
482 editor: &mut Editor,
483 event: &MouseMoveEvent,
484 position_map: &PositionMap,
485 text_bounds: Bounds<Pixels>,
486 cx: &mut ViewContext<Editor>,
487 ) {
488 if !editor.has_pending_selection() {
489 return;
490 }
491
492 let point_for_position = position_map.point_for_position(text_bounds, event.position);
493 let mut scroll_delta = gpui::Point::<f32>::default();
494 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
495 let top = text_bounds.origin.y + vertical_margin;
496 let bottom = text_bounds.lower_left().y - vertical_margin;
497 if event.position.y < top {
498 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
499 }
500 if event.position.y > bottom {
501 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
502 }
503
504 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
505 let left = text_bounds.origin.x + horizontal_margin;
506 let right = text_bounds.upper_right().x - horizontal_margin;
507 if event.position.x < left {
508 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
509 }
510 if event.position.x > right {
511 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
512 }
513
514 editor.select(
515 SelectPhase::Update {
516 position: point_for_position.previous_valid,
517 goal_column: point_for_position.exact_unclipped.column(),
518 scroll_delta,
519 },
520 cx,
521 );
522 }
523
524 fn mouse_moved(
525 editor: &mut Editor,
526 event: &MouseMoveEvent,
527 position_map: &PositionMap,
528 text_hitbox: &Hitbox,
529 gutter_hitbox: &Hitbox,
530 cx: &mut ViewContext<Editor>,
531 ) {
532 let modifiers = event.modifiers;
533 let gutter_hovered = gutter_hitbox.is_hovered(cx);
534 editor.set_gutter_hovered(gutter_hovered, cx);
535
536 // Don't trigger hover popover if mouse is hovering over context menu
537 if text_hitbox.is_hovered(cx) {
538 let point_for_position =
539 position_map.point_for_position(text_hitbox.bounds, event.position);
540
541 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
542
543 if let Some(point) = point_for_position.as_valid() {
544 hover_at(editor, Some(point), cx);
545 Self::update_visible_cursor(editor, point, position_map, cx);
546 } else {
547 hover_at(editor, None, cx);
548 }
549 } else {
550 editor.hide_hovered_link(cx);
551 hover_at(editor, None, cx);
552 if gutter_hovered {
553 cx.stop_propagation();
554 }
555 }
556 }
557
558 fn update_visible_cursor(
559 editor: &mut Editor,
560 point: DisplayPoint,
561 position_map: &PositionMap,
562 cx: &mut ViewContext<Editor>,
563 ) {
564 let snapshot = &position_map.snapshot;
565 let Some(hub) = editor.collaboration_hub() else {
566 return;
567 };
568 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
569 ..DisplayPoint::new(
570 point.row(),
571 (point.column() + 1).min(snapshot.line_len(point.row())),
572 );
573
574 let range = snapshot
575 .buffer_snapshot
576 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
577 ..snapshot
578 .buffer_snapshot
579 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
580
581 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
582 return;
583 };
584 let key = crate::HoveredCursor {
585 replica_id: selection.replica_id,
586 selection_id: selection.selection.id,
587 };
588 editor.hovered_cursors.insert(
589 key.clone(),
590 cx.spawn(|editor, mut cx| async move {
591 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
592 editor
593 .update(&mut cx, |editor, cx| {
594 editor.hovered_cursors.remove(&key);
595 cx.notify();
596 })
597 .ok();
598 }),
599 );
600 cx.notify()
601 }
602
603 fn layout_selections(
604 &self,
605 start_anchor: Anchor,
606 end_anchor: Anchor,
607 snapshot: &EditorSnapshot,
608 start_row: u32,
609 end_row: u32,
610 cx: &mut ElementContext,
611 ) -> (
612 Vec<(PlayerColor, Vec<SelectionLayout>)>,
613 BTreeMap<u32, bool>,
614 Option<DisplayPoint>,
615 ) {
616 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
617 let mut active_rows = BTreeMap::new();
618 let mut newest_selection_head = None;
619 let editor = self.editor.read(cx);
620
621 if editor.show_local_selections {
622 let mut local_selections: Vec<Selection<Point>> = editor
623 .selections
624 .disjoint_in_range(start_anchor..end_anchor, cx);
625 local_selections.extend(editor.selections.pending(cx));
626 let mut layouts = Vec::new();
627 let newest = editor.selections.newest(cx);
628 for selection in local_selections.drain(..) {
629 let is_empty = selection.start == selection.end;
630 let is_newest = selection == newest;
631
632 let layout = SelectionLayout::new(
633 selection,
634 editor.selections.line_mode,
635 editor.cursor_shape,
636 &snapshot.display_snapshot,
637 is_newest,
638 editor.leader_peer_id.is_none(),
639 None,
640 );
641 if is_newest {
642 newest_selection_head = Some(layout.head);
643 }
644
645 for row in cmp::max(layout.active_rows.start, start_row)
646 ..=cmp::min(layout.active_rows.end, end_row)
647 {
648 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
649 *contains_non_empty_selection |= !is_empty;
650 }
651 layouts.push(layout);
652 }
653
654 let player = if editor.read_only(cx) {
655 cx.theme().players().read_only()
656 } else {
657 self.style.local_player
658 };
659
660 selections.push((player, layouts));
661 }
662
663 if let Some(collaboration_hub) = &editor.collaboration_hub {
664 // When following someone, render the local selections in their color.
665 if let Some(leader_id) = editor.leader_peer_id {
666 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
667 if let Some(participant_index) = collaboration_hub
668 .user_participant_indices(cx)
669 .get(&collaborator.user_id)
670 {
671 if let Some((local_selection_style, _)) = selections.first_mut() {
672 *local_selection_style = cx
673 .theme()
674 .players()
675 .color_for_participant(participant_index.0);
676 }
677 }
678 }
679 }
680
681 let mut remote_selections = HashMap::default();
682 for selection in snapshot.remote_selections_in_range(
683 &(start_anchor..end_anchor),
684 collaboration_hub.as_ref(),
685 cx,
686 ) {
687 let selection_style = if let Some(participant_index) = selection.participant_index {
688 cx.theme()
689 .players()
690 .color_for_participant(participant_index.0)
691 } else {
692 cx.theme().players().absent()
693 };
694
695 // Don't re-render the leader's selections, since the local selections
696 // match theirs.
697 if Some(selection.peer_id) == editor.leader_peer_id {
698 continue;
699 }
700 let key = HoveredCursor {
701 replica_id: selection.replica_id,
702 selection_id: selection.selection.id,
703 };
704
705 let is_shown =
706 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
707
708 remote_selections
709 .entry(selection.replica_id)
710 .or_insert((selection_style, Vec::new()))
711 .1
712 .push(SelectionLayout::new(
713 selection.selection,
714 selection.line_mode,
715 selection.cursor_shape,
716 &snapshot.display_snapshot,
717 false,
718 false,
719 if is_shown { selection.user_name } else { None },
720 ));
721 }
722
723 selections.extend(remote_selections.into_values());
724 }
725 (selections, active_rows, newest_selection_head)
726 }
727
728 #[allow(clippy::too_many_arguments)]
729 fn layout_folds(
730 &self,
731 snapshot: &EditorSnapshot,
732 content_origin: gpui::Point<Pixels>,
733 visible_anchor_range: Range<Anchor>,
734 visible_display_row_range: Range<u32>,
735 scroll_pixel_position: gpui::Point<Pixels>,
736 line_height: Pixels,
737 line_layouts: &[LineWithInvisibles],
738 cx: &mut ElementContext,
739 ) -> Vec<FoldLayout> {
740 snapshot
741 .folds_in_range(visible_anchor_range.clone())
742 .filter_map(|fold| {
743 let fold_range = fold.range.clone();
744 let display_range = fold.range.start.to_display_point(&snapshot)
745 ..fold.range.end.to_display_point(&snapshot);
746 debug_assert_eq!(display_range.start.row(), display_range.end.row());
747 let row = display_range.start.row();
748 debug_assert!(row < visible_display_row_range.end);
749 let line_layout = line_layouts
750 .get((row - visible_display_row_range.start) as usize)
751 .map(|l| &l.line)?;
752
753 let start_x = content_origin.x
754 + line_layout.x_for_index(display_range.start.column() as usize)
755 - scroll_pixel_position.x;
756 let start_y = content_origin.y + row as f32 * line_height - scroll_pixel_position.y;
757 let end_x = content_origin.x
758 + line_layout.x_for_index(display_range.end.column() as usize)
759 - scroll_pixel_position.x;
760
761 let fold_bounds = Bounds {
762 origin: point(start_x, start_y),
763 size: size(end_x - start_x, line_height),
764 };
765
766 let mut hover_element = div()
767 .id(fold.id)
768 .size_full()
769 .cursor_pointer()
770 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
771 .on_click(
772 cx.listener_for(&self.editor, move |editor: &mut Editor, _, cx| {
773 editor.unfold_ranges(
774 [fold_range.start..fold_range.end],
775 true,
776 false,
777 cx,
778 );
779 cx.stop_propagation();
780 }),
781 )
782 .into_any();
783 hover_element.layout(fold_bounds.origin, fold_bounds.size.into(), cx);
784 Some(FoldLayout {
785 display_range,
786 hover_element,
787 })
788 })
789 .collect()
790 }
791
792 #[allow(clippy::too_many_arguments)]
793 fn layout_cursors(
794 &self,
795 snapshot: &EditorSnapshot,
796 selections: &[(PlayerColor, Vec<SelectionLayout>)],
797 visible_display_row_range: Range<u32>,
798 line_layouts: &[LineWithInvisibles],
799 text_hitbox: &Hitbox,
800 content_origin: gpui::Point<Pixels>,
801 scroll_pixel_position: gpui::Point<Pixels>,
802 line_height: Pixels,
803 em_width: Pixels,
804 cx: &mut ElementContext,
805 ) -> Vec<CursorLayout> {
806 self.editor.update(cx, |editor, cx| {
807 let mut cursors = Vec::new();
808 for (player_color, selections) in selections {
809 for selection in selections {
810 let cursor_position = selection.head;
811 if (selection.is_local && !editor.show_local_cursors(cx))
812 || !visible_display_row_range.contains(&cursor_position.row())
813 {
814 continue;
815 }
816
817 let cursor_row_layout = &line_layouts
818 [(cursor_position.row() - visible_display_row_range.start) as usize]
819 .line;
820 let cursor_column = cursor_position.column() as usize;
821
822 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
823 let mut block_width =
824 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
825 if block_width == Pixels::ZERO {
826 block_width = em_width;
827 }
828 let block_text = if let CursorShape::Block = selection.cursor_shape {
829 snapshot
830 .chars_at(cursor_position)
831 .next()
832 .and_then(|(character, _)| {
833 let text = if character == '\n' {
834 SharedString::from(" ")
835 } else {
836 SharedString::from(character.to_string())
837 };
838 let len = text.len();
839 cx.text_system()
840 .shape_line(
841 text,
842 cursor_row_layout.font_size,
843 &[TextRun {
844 len,
845 font: self.style.text.font(),
846 color: self.style.background,
847 background_color: None,
848 strikethrough: None,
849 underline: None,
850 }],
851 )
852 .log_err()
853 })
854 } else {
855 None
856 };
857
858 let x = cursor_character_x - scroll_pixel_position.x;
859 let y = cursor_position.row() as f32 * line_height - scroll_pixel_position.y;
860 if selection.is_newest {
861 editor.pixel_position_of_newest_cursor = Some(point(
862 text_hitbox.origin.x + x + block_width / 2.,
863 text_hitbox.origin.y + y + line_height / 2.,
864 ))
865 }
866
867 let mut cursor = CursorLayout {
868 color: player_color.cursor,
869 block_width,
870 origin: point(x, y),
871 line_height,
872 shape: selection.cursor_shape,
873 block_text,
874 cursor_name: None,
875 };
876 let cursor_name = selection.user_name.clone().map(|name| CursorName {
877 string: name,
878 color: self.style.background,
879 is_top_row: cursor_position.row() == 0,
880 });
881 cx.with_element_context(|cx| cursor.layout(content_origin, cursor_name, cx));
882 cursors.push(cursor);
883 }
884 }
885 cursors
886 })
887 }
888
889 fn layout_scrollbar(
890 &self,
891 snapshot: &EditorSnapshot,
892 bounds: Bounds<Pixels>,
893 scroll_position: gpui::Point<f32>,
894 line_height: Pixels,
895 height_in_lines: f32,
896 cx: &mut ElementContext,
897 ) -> Option<ScrollbarLayout> {
898 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
899 let show_scrollbars = match scrollbar_settings.show {
900 ShowScrollbar::Auto => {
901 let editor = self.editor.read(cx);
902 let is_singleton = editor.is_singleton(cx);
903 // Git
904 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
905 ||
906 // Selections
907 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
908 ||
909 // Symbols Selections
910 (is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
911 ||
912 // Diagnostics
913 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
914 ||
915 // Scrollmanager
916 editor.scroll_manager.scrollbars_visible()
917 }
918 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
919 ShowScrollbar::Always => true,
920 ShowScrollbar::Never => false,
921 };
922 if snapshot.mode != EditorMode::Full {
923 return None;
924 }
925
926 let visible_row_range = scroll_position.y..scroll_position.y + height_in_lines;
927
928 // If a drag took place after we started dragging the scrollbar,
929 // cancel the scrollbar drag.
930 if cx.has_active_drag() {
931 self.editor.update(cx, |editor, cx| {
932 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
933 });
934 }
935
936 let track_bounds = Bounds::from_corners(
937 point(self.scrollbar_left(&bounds), bounds.origin.y),
938 point(bounds.lower_right().x, bounds.lower_left().y),
939 );
940
941 let scroll_height = snapshot.max_point().row() as f32 + height_in_lines;
942 let mut height = bounds.size.height;
943 let mut first_row_y_offset = px(0.0);
944
945 // Impose a minimum height on the scrollbar thumb
946 let row_height = height / scroll_height;
947 let min_thumb_height = line_height;
948 let thumb_height = height_in_lines * row_height;
949 if thumb_height < min_thumb_height {
950 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
951 height -= min_thumb_height - thumb_height;
952 }
953
954 Some(ScrollbarLayout {
955 hitbox: cx.insert_hitbox(track_bounds, false),
956 visible_row_range,
957 height,
958 scroll_height,
959 first_row_y_offset,
960 row_height,
961 visible: show_scrollbars,
962 })
963 }
964
965 #[allow(clippy::too_many_arguments)]
966 fn layout_gutter_fold_indicators(
967 &self,
968 fold_statuses: Vec<Option<(FoldStatus, u32, bool)>>,
969 line_height: Pixels,
970 gutter_dimensions: &GutterDimensions,
971 gutter_settings: crate::editor_settings::Gutter,
972 scroll_pixel_position: gpui::Point<Pixels>,
973 gutter_hitbox: &Hitbox,
974 cx: &mut ElementContext,
975 ) -> Vec<Option<AnyElement>> {
976 let mut indicators = self.editor.update(cx, |editor, cx| {
977 editor.render_fold_indicators(
978 fold_statuses,
979 &self.style,
980 editor.gutter_hovered,
981 line_height,
982 gutter_dimensions.margin,
983 cx,
984 )
985 });
986
987 for (ix, fold_indicator) in indicators.iter_mut().enumerate() {
988 if let Some(fold_indicator) = fold_indicator {
989 debug_assert!(gutter_settings.folds);
990 let available_space = size(
991 AvailableSpace::MinContent,
992 AvailableSpace::Definite(line_height * 0.55),
993 );
994 let fold_indicator_size = fold_indicator.measure(available_space, cx);
995
996 let position = point(
997 gutter_dimensions.width - gutter_dimensions.right_padding,
998 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
999 );
1000 let centering_offset = point(
1001 (gutter_dimensions.right_padding + gutter_dimensions.margin
1002 - fold_indicator_size.width)
1003 / 2.,
1004 (line_height - fold_indicator_size.height) / 2.,
1005 );
1006 let origin = gutter_hitbox.origin + position + centering_offset;
1007 fold_indicator.layout(origin, available_space, cx);
1008 }
1009 }
1010
1011 indicators
1012 }
1013
1014 //Folds contained in a hunk are ignored apart from shrinking visual size
1015 //If a fold contains any hunks then that fold line is marked as modified
1016 fn layout_git_gutters(
1017 &self,
1018 display_rows: Range<u32>,
1019 snapshot: &EditorSnapshot,
1020 ) -> Vec<DisplayDiffHunk> {
1021 let buffer_snapshot = &snapshot.buffer_snapshot;
1022
1023 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1024 .to_point(snapshot)
1025 .row;
1026 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1027 .to_point(snapshot)
1028 .row;
1029
1030 buffer_snapshot
1031 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1032 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1033 .dedup()
1034 .collect()
1035 }
1036
1037 fn layout_code_actions_indicator(
1038 &self,
1039 line_height: Pixels,
1040 newest_selection_head: DisplayPoint,
1041 scroll_pixel_position: gpui::Point<Pixels>,
1042 gutter_dimensions: &GutterDimensions,
1043 gutter_hitbox: &Hitbox,
1044 cx: &mut ElementContext,
1045 ) -> Option<AnyElement> {
1046 let mut active = false;
1047 let mut button = None;
1048 self.editor.update(cx, |editor, cx| {
1049 active = matches!(
1050 editor.context_menu.read().as_ref(),
1051 Some(crate::ContextMenu::CodeActions(_))
1052 );
1053 button = editor.render_code_actions_indicator(&self.style, active, cx);
1054 });
1055
1056 let mut button = button?.into_any_element();
1057 let available_space = size(
1058 AvailableSpace::MinContent,
1059 AvailableSpace::Definite(line_height),
1060 );
1061 let indicator_size = button.measure(available_space, cx);
1062
1063 let mut x = Pixels::ZERO;
1064 let mut y = newest_selection_head.row() as f32 * line_height - scroll_pixel_position.y;
1065 // Center indicator.
1066 x +=
1067 (gutter_dimensions.margin + gutter_dimensions.left_padding - indicator_size.width) / 2.;
1068 y += (line_height - indicator_size.height) / 2.;
1069 button.layout(gutter_hitbox.origin + point(x, y), available_space, cx);
1070 Some(button)
1071 }
1072
1073 fn calculate_relative_line_numbers(
1074 &self,
1075 snapshot: &EditorSnapshot,
1076 rows: &Range<u32>,
1077 relative_to: Option<u32>,
1078 ) -> HashMap<u32, u32> {
1079 let mut relative_rows: HashMap<u32, u32> = Default::default();
1080 let Some(relative_to) = relative_to else {
1081 return relative_rows;
1082 };
1083
1084 let start = rows.start.min(relative_to);
1085 let end = rows.end.max(relative_to);
1086
1087 let buffer_rows = snapshot
1088 .buffer_rows(start)
1089 .take(1 + (end - start) as usize)
1090 .collect::<Vec<_>>();
1091
1092 let head_idx = relative_to - start;
1093 let mut delta = 1;
1094 let mut i = head_idx + 1;
1095 while i < buffer_rows.len() as u32 {
1096 if buffer_rows[i as usize].is_some() {
1097 if rows.contains(&(i + start)) {
1098 relative_rows.insert(i + start, delta);
1099 }
1100 delta += 1;
1101 }
1102 i += 1;
1103 }
1104 delta = 1;
1105 i = head_idx.min(buffer_rows.len() as u32 - 1);
1106 while i > 0 && buffer_rows[i as usize].is_none() {
1107 i -= 1;
1108 }
1109
1110 while i > 0 {
1111 i -= 1;
1112 if buffer_rows[i as usize].is_some() {
1113 if rows.contains(&(i + start)) {
1114 relative_rows.insert(i + start, delta);
1115 }
1116 delta += 1;
1117 }
1118 }
1119
1120 relative_rows
1121 }
1122
1123 fn layout_line_numbers(
1124 &self,
1125 rows: Range<u32>,
1126 active_rows: &BTreeMap<u32, bool>,
1127 newest_selection_head: Option<DisplayPoint>,
1128 snapshot: &EditorSnapshot,
1129 cx: &ElementContext,
1130 ) -> (
1131 Vec<Option<ShapedLine>>,
1132 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1133 ) {
1134 let editor = self.editor.read(cx);
1135 let is_singleton = editor.is_singleton(cx);
1136 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1137 let newest = editor.selections.newest::<Point>(cx);
1138 SelectionLayout::new(
1139 newest,
1140 editor.selections.line_mode,
1141 editor.cursor_shape,
1142 &snapshot.display_snapshot,
1143 true,
1144 true,
1145 None,
1146 )
1147 .head
1148 });
1149 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1150 let include_line_numbers =
1151 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full;
1152 let include_fold_statuses =
1153 EditorSettings::get_global(cx).gutter.folds && snapshot.mode == EditorMode::Full;
1154 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1155 let mut fold_statuses = Vec::with_capacity(rows.len());
1156 let mut line_number = String::new();
1157 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1158 let relative_to = if is_relative {
1159 Some(newest_selection_head.row())
1160 } else {
1161 None
1162 };
1163
1164 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1165
1166 for (ix, row) in snapshot
1167 .buffer_rows(rows.start)
1168 .take((rows.end - rows.start) as usize)
1169 .enumerate()
1170 {
1171 let display_row = rows.start + ix as u32;
1172 let (active, color) = if active_rows.contains_key(&display_row) {
1173 (true, cx.theme().colors().editor_active_line_number)
1174 } else {
1175 (false, cx.theme().colors().editor_line_number)
1176 };
1177 if let Some(buffer_row) = row {
1178 if include_line_numbers {
1179 line_number.clear();
1180 let default_number = buffer_row + 1;
1181 let number = relative_rows
1182 .get(&(ix as u32 + rows.start))
1183 .unwrap_or(&default_number);
1184 write!(&mut line_number, "{}", number).unwrap();
1185 let run = TextRun {
1186 len: line_number.len(),
1187 font: self.style.text.font(),
1188 color,
1189 background_color: None,
1190 underline: None,
1191 strikethrough: None,
1192 };
1193 let shaped_line = cx
1194 .text_system()
1195 .shape_line(line_number.clone().into(), font_size, &[run])
1196 .unwrap();
1197 shaped_line_numbers.push(Some(shaped_line));
1198 }
1199 if include_fold_statuses {
1200 fold_statuses.push(
1201 is_singleton
1202 .then(|| {
1203 snapshot
1204 .fold_for_line(buffer_row)
1205 .map(|fold_status| (fold_status, buffer_row, active))
1206 })
1207 .flatten(),
1208 )
1209 }
1210 } else {
1211 fold_statuses.push(None);
1212 shaped_line_numbers.push(None);
1213 }
1214 }
1215
1216 (shaped_line_numbers, fold_statuses)
1217 }
1218
1219 fn layout_lines(
1220 &self,
1221 rows: Range<u32>,
1222 line_number_layouts: &[Option<ShapedLine>],
1223 snapshot: &EditorSnapshot,
1224 cx: &ElementContext,
1225 ) -> Vec<LineWithInvisibles> {
1226 if rows.start >= rows.end {
1227 return Vec::new();
1228 }
1229
1230 // Show the placeholder when the editor is empty
1231 if snapshot.is_empty() {
1232 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1233 let placeholder_color = cx.theme().colors().text_placeholder;
1234 let placeholder_text = snapshot.placeholder_text();
1235
1236 let placeholder_lines = placeholder_text
1237 .as_ref()
1238 .map_or("", AsRef::as_ref)
1239 .split('\n')
1240 .skip(rows.start as usize)
1241 .chain(iter::repeat(""))
1242 .take(rows.len());
1243 placeholder_lines
1244 .filter_map(move |line| {
1245 let run = TextRun {
1246 len: line.len(),
1247 font: self.style.text.font(),
1248 color: placeholder_color,
1249 background_color: None,
1250 underline: Default::default(),
1251 strikethrough: None,
1252 };
1253 cx.text_system()
1254 .shape_line(line.to_string().into(), font_size, &[run])
1255 .log_err()
1256 })
1257 .map(|line| LineWithInvisibles {
1258 line,
1259 invisibles: Vec::new(),
1260 })
1261 .collect()
1262 } else {
1263 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1264 LineWithInvisibles::from_chunks(
1265 chunks,
1266 &self.style.text,
1267 MAX_LINE_LEN,
1268 rows.len(),
1269 line_number_layouts,
1270 snapshot.mode,
1271 cx,
1272 )
1273 }
1274 }
1275
1276 #[allow(clippy::too_many_arguments)]
1277 fn build_blocks(
1278 &self,
1279 rows: Range<u32>,
1280 snapshot: &EditorSnapshot,
1281 hitbox: &Hitbox,
1282 text_hitbox: &Hitbox,
1283 scroll_width: &mut Pixels,
1284 gutter_dimensions: &GutterDimensions,
1285 em_width: Pixels,
1286 text_x: Pixels,
1287 line_height: Pixels,
1288 line_layouts: &[LineWithInvisibles],
1289 cx: &mut ElementContext,
1290 ) -> Vec<BlockLayout> {
1291 let mut block_id = 0;
1292 let (fixed_blocks, non_fixed_blocks) = snapshot
1293 .blocks_in_range(rows.clone())
1294 .partition::<Vec<_>, _>(|(_, block)| match block {
1295 TransformBlock::ExcerptHeader { .. } => false,
1296 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1297 });
1298
1299 let render_block = |block: &TransformBlock,
1300 available_space: Size<AvailableSpace>,
1301 block_id: usize,
1302 cx: &mut ElementContext| {
1303 let mut element = match block {
1304 TransformBlock::Custom(block) => {
1305 let align_to = block
1306 .position()
1307 .to_point(&snapshot.buffer_snapshot)
1308 .to_display_point(snapshot);
1309 let anchor_x = text_x
1310 + if rows.contains(&align_to.row()) {
1311 line_layouts[(align_to.row() - rows.start) as usize]
1312 .line
1313 .x_for_index(align_to.column() as usize)
1314 } else {
1315 layout_line(align_to.row(), snapshot, &self.style, cx)
1316 .unwrap()
1317 .x_for_index(align_to.column() as usize)
1318 };
1319
1320 block.render(&mut BlockContext {
1321 context: cx,
1322 anchor_x,
1323 gutter_dimensions,
1324 line_height,
1325 em_width,
1326 block_id,
1327 max_width: text_hitbox.size.width.max(*scroll_width),
1328 editor_style: &self.style,
1329 })
1330 }
1331
1332 TransformBlock::ExcerptHeader {
1333 buffer,
1334 range,
1335 starts_new_buffer,
1336 ..
1337 } => {
1338 let include_root = self
1339 .editor
1340 .read(cx)
1341 .project
1342 .as_ref()
1343 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1344 .unwrap_or_default();
1345
1346 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
1347 let jump_path = ProjectPath {
1348 worktree_id: file.worktree_id(cx),
1349 path: file.path.clone(),
1350 };
1351 let jump_anchor = range
1352 .primary
1353 .as_ref()
1354 .map_or(range.context.start, |primary| primary.start);
1355 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
1356
1357 cx.listener_for(&self.editor, move |editor, _, cx| {
1358 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
1359 })
1360 });
1361
1362 let element = if *starts_new_buffer {
1363 let path = buffer.resolve_file_path(cx, include_root);
1364 let mut filename = None;
1365 let mut parent_path = None;
1366 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
1367 if let Some(path) = path {
1368 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
1369 parent_path = path
1370 .parent()
1371 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
1372 }
1373
1374 v_flex()
1375 .id(("path header container", block_id))
1376 .size_full()
1377 .justify_center()
1378 .p(gpui::px(6.))
1379 .child(
1380 h_flex()
1381 .id("path header block")
1382 .size_full()
1383 .pl(gpui::px(12.))
1384 .pr(gpui::px(8.))
1385 .rounded_md()
1386 .shadow_md()
1387 .border()
1388 .border_color(cx.theme().colors().border)
1389 .bg(cx.theme().colors().editor_subheader_background)
1390 .justify_between()
1391 .hover(|style| style.bg(cx.theme().colors().element_hover))
1392 .child(
1393 h_flex().gap_3().child(
1394 h_flex()
1395 .gap_2()
1396 .child(
1397 filename
1398 .map(SharedString::from)
1399 .unwrap_or_else(|| "untitled".into()),
1400 )
1401 .when_some(parent_path, |then, path| {
1402 then.child(
1403 div().child(path).text_color(
1404 cx.theme().colors().text_muted,
1405 ),
1406 )
1407 }),
1408 ),
1409 )
1410 .when_some(jump_handler, |this, jump_handler| {
1411 this.cursor_pointer()
1412 .tooltip(|cx| {
1413 Tooltip::for_action(
1414 "Jump to Buffer",
1415 &OpenExcerpts,
1416 cx,
1417 )
1418 })
1419 .on_mouse_down(MouseButton::Left, |_, cx| {
1420 cx.stop_propagation()
1421 })
1422 .on_click(jump_handler)
1423 }),
1424 )
1425 } else {
1426 h_flex()
1427 .id(("collapsed context", block_id))
1428 .size_full()
1429 .gap(gutter_dimensions.left_padding + gutter_dimensions.right_padding)
1430 .child(
1431 h_flex()
1432 .justify_end()
1433 .flex_none()
1434 .w(gutter_dimensions.width
1435 - (gutter_dimensions.left_padding
1436 + gutter_dimensions.right_padding))
1437 .h_full()
1438 .text_buffer(cx)
1439 .text_color(cx.theme().colors().editor_line_number)
1440 .child("..."),
1441 )
1442 .child(
1443 ButtonLike::new("jump to collapsed context")
1444 .style(ButtonStyle::Transparent)
1445 .full_width()
1446 .child(
1447 div()
1448 .h_px()
1449 .w_full()
1450 .bg(cx.theme().colors().border_variant)
1451 .group_hover("", |style| {
1452 style.bg(cx.theme().colors().border)
1453 }),
1454 )
1455 .when_some(jump_handler, |this, jump_handler| {
1456 this.on_click(jump_handler).tooltip(|cx| {
1457 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
1458 })
1459 }),
1460 )
1461 };
1462 element.into_any()
1463 }
1464 };
1465
1466 let size = element.measure(available_space, cx);
1467 (element, size)
1468 };
1469
1470 let mut fixed_block_max_width = Pixels::ZERO;
1471 let mut blocks = Vec::new();
1472 for (row, block) in fixed_blocks {
1473 let available_space = size(
1474 AvailableSpace::MinContent,
1475 AvailableSpace::Definite(block.height() as f32 * line_height),
1476 );
1477 let (element, element_size) = render_block(block, available_space, block_id, cx);
1478 block_id += 1;
1479 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
1480 blocks.push(BlockLayout {
1481 row,
1482 element,
1483 available_space,
1484 style: BlockStyle::Fixed,
1485 });
1486 }
1487 for (row, block) in non_fixed_blocks {
1488 let style = match block {
1489 TransformBlock::Custom(block) => block.style(),
1490 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
1491 };
1492 let width = match style {
1493 BlockStyle::Sticky => hitbox.size.width,
1494 BlockStyle::Flex => hitbox
1495 .size
1496 .width
1497 .max(fixed_block_max_width)
1498 .max(gutter_dimensions.width + *scroll_width),
1499 BlockStyle::Fixed => unreachable!(),
1500 };
1501 let available_space = size(
1502 AvailableSpace::Definite(width),
1503 AvailableSpace::Definite(block.height() as f32 * line_height),
1504 );
1505 let (element, _) = render_block(block, available_space, block_id, cx);
1506 block_id += 1;
1507 blocks.push(BlockLayout {
1508 row,
1509 element,
1510 available_space,
1511 style,
1512 });
1513 }
1514
1515 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
1516 blocks
1517 }
1518
1519 fn layout_blocks(
1520 &self,
1521 blocks: &mut Vec<BlockLayout>,
1522 hitbox: &Hitbox,
1523 line_height: Pixels,
1524 scroll_pixel_position: gpui::Point<Pixels>,
1525 cx: &mut ElementContext,
1526 ) {
1527 for block in blocks {
1528 let mut origin = hitbox.origin
1529 + point(
1530 Pixels::ZERO,
1531 block.row as f32 * line_height - scroll_pixel_position.y,
1532 );
1533 if !matches!(block.style, BlockStyle::Sticky) {
1534 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
1535 }
1536 block.element.layout(origin, block.available_space, cx);
1537 }
1538 }
1539
1540 #[allow(clippy::too_many_arguments)]
1541 fn layout_context_menu(
1542 &self,
1543 line_height: Pixels,
1544 hitbox: &Hitbox,
1545 text_hitbox: &Hitbox,
1546 content_origin: gpui::Point<Pixels>,
1547 start_row: u32,
1548 scroll_pixel_position: gpui::Point<Pixels>,
1549 line_layouts: &[LineWithInvisibles],
1550 newest_selection_head: DisplayPoint,
1551 cx: &mut ElementContext,
1552 ) -> bool {
1553 let max_height = cmp::min(
1554 12. * line_height,
1555 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
1556 );
1557 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
1558 if editor.context_menu_visible() {
1559 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
1560 } else {
1561 None
1562 }
1563 }) else {
1564 return false;
1565 };
1566
1567 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1568 let context_menu_size = context_menu.measure(available_space, cx);
1569
1570 let cursor_row_layout = &line_layouts[(position.row() - start_row) as usize].line;
1571 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1572 let y = (position.row() + 1) as f32 * line_height - scroll_pixel_position.y;
1573 let mut list_origin = content_origin + point(x, y);
1574 let list_width = context_menu_size.width;
1575 let list_height = context_menu_size.height;
1576
1577 // Snap the right edge of the list to the right edge of the window if
1578 // its horizontal bounds overflow.
1579 if list_origin.x + list_width > cx.viewport_size().width {
1580 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1581 }
1582
1583 if list_origin.y + list_height > text_hitbox.lower_right().y {
1584 list_origin.y -= line_height + list_height;
1585 }
1586
1587 cx.defer_draw(context_menu, list_origin, 1);
1588 true
1589 }
1590
1591 fn layout_mouse_context_menu(&self, cx: &mut ElementContext) -> Option<AnyElement> {
1592 let mouse_context_menu = self.editor.read(cx).mouse_context_menu.as_ref()?;
1593 let mut element = overlay()
1594 .position(mouse_context_menu.position)
1595 .child(mouse_context_menu.context_menu.clone())
1596 .anchor(AnchorCorner::TopLeft)
1597 .snap_to_window()
1598 .into_any();
1599 element.layout(gpui::Point::default(), AvailableSpace::min_size(), cx);
1600 Some(element)
1601 }
1602
1603 #[allow(clippy::too_many_arguments)]
1604 fn layout_hover_popovers(
1605 &self,
1606 snapshot: &EditorSnapshot,
1607 hitbox: &Hitbox,
1608 text_hitbox: &Hitbox,
1609 visible_display_row_range: Range<u32>,
1610 content_origin: gpui::Point<Pixels>,
1611 scroll_pixel_position: gpui::Point<Pixels>,
1612 line_layouts: &[LineWithInvisibles],
1613 line_height: Pixels,
1614 em_width: Pixels,
1615 cx: &mut ElementContext,
1616 ) {
1617 let max_size = size(
1618 (120. * em_width) // Default size
1619 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
1620 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1621 (16. * line_height) // Default size
1622 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
1623 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1624 );
1625
1626 let hover_popovers = self.editor.update(cx, |editor, cx| {
1627 editor.hover_state.render(
1628 &snapshot,
1629 &self.style,
1630 visible_display_row_range.clone(),
1631 max_size,
1632 editor.workspace.as_ref().map(|(w, _)| w.clone()),
1633 cx,
1634 )
1635 });
1636 let Some((position, mut hover_popovers)) = hover_popovers else {
1637 return;
1638 };
1639
1640 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1641
1642 // This is safe because we check on layout whether the required row is available
1643 let hovered_row_layout =
1644 &line_layouts[(position.row() - visible_display_row_range.start) as usize].line;
1645
1646 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1647 // height. This is the size we will use to decide whether to render popovers above or below
1648 // the hovered line.
1649 let first_size = hover_popovers[0].measure(available_space, cx);
1650 let height_to_reserve = first_size.height + 1.5 * MIN_POPOVER_LINE_HEIGHT * line_height;
1651
1652 // Compute Hovered Point
1653 let x =
1654 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1655 let y = position.row() as f32 * line_height - scroll_pixel_position.y;
1656 let hovered_point = content_origin + point(x, y);
1657
1658 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1659 // There is enough space above. Render popovers above the hovered point
1660 let mut current_y = hovered_point.y;
1661 for mut hover_popover in hover_popovers {
1662 let size = hover_popover.measure(available_space, cx);
1663 let mut popover_origin = point(hovered_point.x, current_y - size.height);
1664
1665 let x_out_of_bounds = text_hitbox.upper_right().x - (popover_origin.x + size.width);
1666 if x_out_of_bounds < Pixels::ZERO {
1667 popover_origin.x = popover_origin.x + x_out_of_bounds;
1668 }
1669
1670 cx.defer_draw(hover_popover, popover_origin, 2);
1671
1672 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1673 }
1674 } else {
1675 // There is not enough space above. Render popovers below the hovered point
1676 let mut current_y = hovered_point.y + line_height;
1677 for mut hover_popover in hover_popovers {
1678 let size = hover_popover.measure(available_space, cx);
1679 let mut popover_origin = point(hovered_point.x, current_y);
1680
1681 let x_out_of_bounds = text_hitbox.upper_right().x - (popover_origin.x + size.width);
1682 if x_out_of_bounds < Pixels::ZERO {
1683 popover_origin.x = popover_origin.x + x_out_of_bounds;
1684 }
1685
1686 cx.defer_draw(hover_popover, popover_origin, 2);
1687
1688 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1689 }
1690 }
1691 }
1692
1693 fn paint_background(&self, layout: &EditorLayout, cx: &mut ElementContext) {
1694 cx.paint_layer(layout.hitbox.bounds, |cx| {
1695 let scroll_top =
1696 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
1697 let gutter_bg = cx.theme().colors().editor_gutter_background;
1698 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
1699 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
1700
1701 if let EditorMode::Full = layout.mode {
1702 let mut active_rows = layout.active_rows.iter().peekable();
1703 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
1704 let mut end_row = *start_row;
1705 while active_rows.peek().map_or(false, |r| {
1706 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
1707 }) {
1708 active_rows.next().unwrap();
1709 end_row += 1;
1710 }
1711
1712 if !contains_non_empty_selection {
1713 let origin = point(
1714 layout.hitbox.origin.x,
1715 layout.hitbox.origin.y
1716 + (layout.position_map.line_height * *start_row as f32)
1717 - scroll_top,
1718 );
1719 let size = size(
1720 layout.hitbox.size.width,
1721 layout.position_map.line_height * (end_row - start_row + 1) as f32,
1722 );
1723 let active_line_bg = cx.theme().colors().editor_active_line_background;
1724 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
1725 }
1726 }
1727
1728 let mut paint_highlight =
1729 |highlight_row_start: u32, highlight_row_end: u32, color| {
1730 let origin = point(
1731 layout.hitbox.origin.x,
1732 layout.hitbox.origin.y
1733 + (layout.position_map.line_height * highlight_row_start as f32)
1734 - scroll_top,
1735 );
1736 let size = size(
1737 layout.hitbox.size.width,
1738 layout.position_map.line_height
1739 * (highlight_row_end + 1 - highlight_row_start) as f32,
1740 );
1741 cx.paint_quad(fill(Bounds { origin, size }, color));
1742 };
1743
1744 let mut last_row = None;
1745 let mut highlight_row_start = 0u32;
1746 let mut highlight_row_end = 0u32;
1747 for (&row, &color) in &layout.highlighted_rows {
1748 let paint = last_row.map_or(false, |(last_row, last_color)| {
1749 last_color != color || last_row + 1 < row
1750 });
1751
1752 if paint {
1753 let paint_range_is_unfinished = highlight_row_end == 0;
1754 if paint_range_is_unfinished {
1755 highlight_row_end = row;
1756 last_row = None;
1757 }
1758 paint_highlight(highlight_row_start, highlight_row_end, color);
1759 highlight_row_start = 0;
1760 highlight_row_end = 0;
1761 if !paint_range_is_unfinished {
1762 highlight_row_start = row;
1763 last_row = Some((row, color));
1764 }
1765 } else {
1766 if last_row.is_none() {
1767 highlight_row_start = row;
1768 } else {
1769 highlight_row_end = row;
1770 }
1771 last_row = Some((row, color));
1772 }
1773 }
1774 if let Some((row, hsla)) = last_row {
1775 highlight_row_end = row;
1776 paint_highlight(highlight_row_start, highlight_row_end, hsla);
1777 }
1778
1779 let scroll_left =
1780 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
1781
1782 for (wrap_position, active) in layout.wrap_guides.iter() {
1783 let x = (layout.text_hitbox.origin.x
1784 + *wrap_position
1785 + layout.position_map.em_width / 2.)
1786 - scroll_left;
1787
1788 let show_scrollbars = layout
1789 .scrollbar_layout
1790 .as_ref()
1791 .map_or(false, |scrollbar| scrollbar.visible);
1792 if x < layout.text_hitbox.origin.x
1793 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
1794 {
1795 continue;
1796 }
1797
1798 let color = if *active {
1799 cx.theme().colors().editor_active_wrap_guide
1800 } else {
1801 cx.theme().colors().editor_wrap_guide
1802 };
1803 cx.paint_quad(fill(
1804 Bounds {
1805 origin: point(x, layout.text_hitbox.origin.y),
1806 size: size(px(1.), layout.text_hitbox.size.height),
1807 },
1808 color,
1809 ));
1810 }
1811 }
1812 })
1813 }
1814
1815 fn paint_gutter(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
1816 let line_height = layout.position_map.line_height;
1817
1818 let scroll_position = layout.position_map.snapshot.scroll_position();
1819 let scroll_top = scroll_position.y * line_height;
1820
1821 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
1822
1823 let show_git_gutter = matches!(
1824 ProjectSettings::get_global(cx).git.git_gutter,
1825 Some(GitGutterSetting::TrackedFiles)
1826 );
1827
1828 if show_git_gutter {
1829 Self::paint_diff_hunks(layout, cx);
1830 }
1831
1832 for (ix, line) in layout.line_numbers.iter().enumerate() {
1833 if let Some(line) = line {
1834 let line_origin = layout.gutter_hitbox.origin
1835 + point(
1836 layout.gutter_hitbox.size.width
1837 - line.width
1838 - layout.gutter_dimensions.right_padding,
1839 ix as f32 * line_height - (scroll_top % line_height),
1840 );
1841
1842 line.paint(line_origin, line_height, cx).log_err();
1843 }
1844 }
1845
1846 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
1847 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
1848 for fold_indicator in layout.fold_indicators.iter_mut().flatten() {
1849 fold_indicator.paint(cx);
1850 }
1851 });
1852
1853 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
1854 indicator.paint(cx);
1855 }
1856 })
1857 }
1858
1859 fn paint_diff_hunks(layout: &EditorLayout, cx: &mut ElementContext) {
1860 if layout.display_hunks.is_empty() {
1861 return;
1862 }
1863
1864 let line_height = layout.position_map.line_height;
1865
1866 let scroll_position = layout.position_map.snapshot.scroll_position();
1867 let scroll_top = scroll_position.y * line_height;
1868
1869 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
1870 for hunk in &layout.display_hunks {
1871 let (display_row_range, status) = match hunk {
1872 //TODO: This rendering is entirely a horrible hack
1873 &DisplayDiffHunk::Folded { display_row: row } => {
1874 let start_y = row as f32 * line_height - scroll_top;
1875 let end_y = start_y + line_height;
1876
1877 let width = 0.275 * line_height;
1878 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
1879 let highlight_size = size(width * 2., end_y - start_y);
1880 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
1881 cx.paint_quad(quad(
1882 highlight_bounds,
1883 Corners::all(1. * line_height),
1884 cx.theme().status().modified,
1885 Edges::default(),
1886 transparent_black(),
1887 ));
1888
1889 continue;
1890 }
1891
1892 DisplayDiffHunk::Unfolded {
1893 display_row_range,
1894 status,
1895 } => (display_row_range, status),
1896 };
1897
1898 let color = match status {
1899 DiffHunkStatus::Added => cx.theme().status().created,
1900 DiffHunkStatus::Modified => cx.theme().status().modified,
1901
1902 //TODO: This rendering is entirely a horrible hack
1903 DiffHunkStatus::Removed => {
1904 let row = display_row_range.start;
1905
1906 let offset = line_height / 2.;
1907 let start_y = row as f32 * line_height - offset - scroll_top;
1908 let end_y = start_y + line_height;
1909
1910 let width = 0.275 * line_height;
1911 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
1912 let highlight_size = size(width * 2., end_y - start_y);
1913 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
1914 cx.paint_quad(quad(
1915 highlight_bounds,
1916 Corners::all(1. * line_height),
1917 cx.theme().status().deleted,
1918 Edges::default(),
1919 transparent_black(),
1920 ));
1921
1922 continue;
1923 }
1924 };
1925
1926 let start_row = display_row_range.start;
1927 let end_row = display_row_range.end;
1928 // If we're in a multibuffer, row range span might include an
1929 // excerpt header, so if we were to draw the marker straight away,
1930 // the hunk might include the rows of that header.
1931 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
1932 // Instead, we simply check whether the range we're dealing with includes
1933 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
1934 let end_row_in_current_excerpt = layout
1935 .position_map
1936 .snapshot
1937 .blocks_in_range(start_row..end_row)
1938 .find_map(|(start_row, block)| {
1939 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
1940 Some(start_row)
1941 } else {
1942 None
1943 }
1944 })
1945 .unwrap_or(end_row);
1946
1947 let start_y = start_row as f32 * line_height - scroll_top;
1948 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
1949
1950 let width = 0.275 * line_height;
1951 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
1952 let highlight_size = size(width * 2., end_y - start_y);
1953 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
1954 cx.paint_quad(quad(
1955 highlight_bounds,
1956 Corners::all(0.05 * line_height),
1957 color,
1958 Edges::default(),
1959 transparent_black(),
1960 ));
1961 }
1962 })
1963 }
1964
1965 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
1966 cx.with_content_mask(
1967 Some(ContentMask {
1968 bounds: layout.text_hitbox.bounds,
1969 }),
1970 |cx| {
1971 let cursor_style = if self
1972 .editor
1973 .read(cx)
1974 .hovered_link_state
1975 .as_ref()
1976 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
1977 {
1978 CursorStyle::PointingHand
1979 } else {
1980 CursorStyle::IBeam
1981 };
1982 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
1983
1984 cx.with_element_id(Some("folds"), |cx| self.paint_folds(layout, cx));
1985 let invisible_display_ranges = self.paint_highlights(layout, cx);
1986 self.paint_lines(&invisible_display_ranges, layout, cx);
1987 self.paint_redactions(layout, cx);
1988 self.paint_cursors(layout, cx);
1989 },
1990 )
1991 }
1992
1993 fn paint_highlights(
1994 &mut self,
1995 layout: &mut EditorLayout,
1996 cx: &mut ElementContext,
1997 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
1998 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
1999 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
2000 let line_end_overshoot = 0.15 * layout.position_map.line_height;
2001 for (range, color) in &layout.highlighted_ranges {
2002 self.paint_highlighted_range(
2003 range.clone(),
2004 *color,
2005 Pixels::ZERO,
2006 line_end_overshoot,
2007 layout,
2008 cx,
2009 );
2010 }
2011
2012 let corner_radius = 0.15 * layout.position_map.line_height;
2013
2014 for (player_color, selections) in &layout.selections {
2015 for selection in selections.into_iter() {
2016 self.paint_highlighted_range(
2017 selection.range.clone(),
2018 player_color.selection,
2019 corner_radius,
2020 corner_radius * 2.,
2021 layout,
2022 cx,
2023 );
2024
2025 if selection.is_local && !selection.range.is_empty() {
2026 invisible_display_ranges.push(selection.range.clone());
2027 }
2028 }
2029 }
2030 invisible_display_ranges
2031 })
2032 }
2033
2034 fn paint_lines(
2035 &mut self,
2036 invisible_display_ranges: &[Range<DisplayPoint>],
2037 layout: &EditorLayout,
2038 cx: &mut ElementContext,
2039 ) {
2040 let whitespace_setting = self
2041 .editor
2042 .read(cx)
2043 .buffer
2044 .read(cx)
2045 .settings_at(0, cx)
2046 .show_whitespaces;
2047
2048 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
2049 let row = layout.visible_display_row_range.start + ix as u32;
2050 line_with_invisibles.draw(
2051 layout,
2052 row,
2053 layout.content_origin,
2054 whitespace_setting,
2055 invisible_display_ranges,
2056 cx,
2057 )
2058 }
2059 }
2060
2061 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2062 if layout.redacted_ranges.is_empty() {
2063 return;
2064 }
2065
2066 let line_end_overshoot = layout.line_end_overshoot();
2067
2068 // A softer than perfect black
2069 let redaction_color = gpui::rgb(0x0e1111);
2070
2071 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2072 for range in layout.redacted_ranges.iter() {
2073 self.paint_highlighted_range(
2074 range.clone(),
2075 redaction_color.into(),
2076 Pixels::ZERO,
2077 line_end_overshoot,
2078 layout,
2079 cx,
2080 );
2081 }
2082 });
2083 }
2084
2085 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2086 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2087 for cursor in &mut layout.cursors {
2088 cursor.paint(layout.content_origin, cx);
2089 }
2090 });
2091 }
2092
2093 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2094 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
2095 return;
2096 };
2097
2098 let thumb_bounds = scrollbar_layout.thumb_bounds();
2099 if scrollbar_layout.visible {
2100 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
2101 cx.paint_quad(quad(
2102 scrollbar_layout.hitbox.bounds,
2103 Corners::default(),
2104 cx.theme().colors().scrollbar_track_background,
2105 Edges {
2106 top: Pixels::ZERO,
2107 right: Pixels::ZERO,
2108 bottom: Pixels::ZERO,
2109 left: px(1.),
2110 },
2111 cx.theme().colors().scrollbar_track_border,
2112 ));
2113 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2114 let is_singleton = self.editor.read(cx).is_singleton(cx);
2115 if is_singleton && scrollbar_settings.selections {
2116 let start_anchor = Anchor::min();
2117 let end_anchor = Anchor::max();
2118 let background_ranges = self
2119 .editor
2120 .read(cx)
2121 .background_highlight_row_ranges::<BufferSearchHighlights>(
2122 start_anchor..end_anchor,
2123 &layout.position_map.snapshot,
2124 50000,
2125 );
2126 for range in background_ranges {
2127 let start_y = scrollbar_layout.y_for_row(range.start().row() as f32);
2128 let mut end_y = scrollbar_layout.y_for_row(range.end().row() as f32);
2129 if end_y - start_y < px(1.) {
2130 end_y = start_y + px(1.);
2131 }
2132 let bounds = Bounds::from_corners(
2133 point(scrollbar_layout.hitbox.left(), start_y),
2134 point(scrollbar_layout.hitbox.right(), end_y),
2135 );
2136 cx.paint_quad(quad(
2137 bounds,
2138 Corners::default(),
2139 cx.theme().status().info,
2140 Edges {
2141 top: Pixels::ZERO,
2142 right: px(1.),
2143 bottom: Pixels::ZERO,
2144 left: px(1.),
2145 },
2146 cx.theme().colors().scrollbar_thumb_border,
2147 ));
2148 }
2149 }
2150
2151 if is_singleton && scrollbar_settings.symbols_selections {
2152 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
2153 Anchor::min()..Anchor::max(),
2154 &layout.position_map.snapshot,
2155 cx.theme().colors(),
2156 );
2157 for hunk in selection_ranges {
2158 let start_display = Point::new(hunk.0.start.row(), 0)
2159 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2160 let end_display = Point::new(hunk.0.end.row(), 0)
2161 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2162 let start_y = scrollbar_layout.y_for_row(start_display.row() as f32);
2163 let mut end_y = if hunk.0.start == hunk.0.end {
2164 scrollbar_layout.y_for_row((end_display.row() + 1) as f32)
2165 } else {
2166 scrollbar_layout.y_for_row(end_display.row() as f32)
2167 };
2168
2169 if end_y - start_y < px(1.) {
2170 end_y = start_y + px(1.);
2171 }
2172 let bounds = Bounds::from_corners(
2173 point(scrollbar_layout.hitbox.left(), start_y),
2174 point(scrollbar_layout.hitbox.right(), end_y),
2175 );
2176
2177 cx.paint_quad(quad(
2178 bounds,
2179 Corners::default(),
2180 cx.theme().status().info,
2181 Edges {
2182 top: Pixels::ZERO,
2183 right: px(1.),
2184 bottom: Pixels::ZERO,
2185 left: px(1.),
2186 },
2187 cx.theme().colors().scrollbar_thumb_border,
2188 ));
2189 }
2190 }
2191
2192 if is_singleton && scrollbar_settings.git_diff {
2193 for hunk in layout
2194 .position_map
2195 .snapshot
2196 .buffer_snapshot
2197 .git_diff_hunks_in_range(0..layout.max_row)
2198 {
2199 let start_display = Point::new(hunk.associated_range.start, 0)
2200 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2201 let end_display = Point::new(hunk.associated_range.end, 0)
2202 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2203 let start_y = scrollbar_layout.y_for_row(start_display.row() as f32);
2204 let mut end_y = if hunk.associated_range.start == hunk.associated_range.end
2205 {
2206 scrollbar_layout.y_for_row((end_display.row() + 1) as f32)
2207 } else {
2208 scrollbar_layout.y_for_row(end_display.row() as f32)
2209 };
2210
2211 if end_y - start_y < px(1.) {
2212 end_y = start_y + px(1.);
2213 }
2214 let bounds = Bounds::from_corners(
2215 point(scrollbar_layout.hitbox.left(), start_y),
2216 point(scrollbar_layout.hitbox.right(), end_y),
2217 );
2218
2219 let color = match hunk.status() {
2220 DiffHunkStatus::Added => cx.theme().status().created,
2221 DiffHunkStatus::Modified => cx.theme().status().modified,
2222 DiffHunkStatus::Removed => cx.theme().status().deleted,
2223 };
2224 cx.paint_quad(quad(
2225 bounds,
2226 Corners::default(),
2227 color,
2228 Edges {
2229 top: Pixels::ZERO,
2230 right: px(1.),
2231 bottom: Pixels::ZERO,
2232 left: px(1.),
2233 },
2234 cx.theme().colors().scrollbar_thumb_border,
2235 ));
2236 }
2237 }
2238
2239 if is_singleton && scrollbar_settings.diagnostics {
2240 let max_point = layout
2241 .position_map
2242 .snapshot
2243 .display_snapshot
2244 .buffer_snapshot
2245 .max_point();
2246
2247 let diagnostics = layout
2248 .position_map
2249 .snapshot
2250 .buffer_snapshot
2251 .diagnostics_in_range::<_, Point>(Point::zero()..max_point, false)
2252 // We want to sort by severity, in order to paint the most severe diagnostics last.
2253 .sorted_by_key(|diagnostic| {
2254 std::cmp::Reverse(diagnostic.diagnostic.severity)
2255 });
2256
2257 for diagnostic in diagnostics {
2258 let start_display = diagnostic
2259 .range
2260 .start
2261 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2262 let end_display = diagnostic
2263 .range
2264 .end
2265 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2266 let start_y = scrollbar_layout.y_for_row(start_display.row() as f32);
2267 let mut end_y = if diagnostic.range.start == diagnostic.range.end {
2268 scrollbar_layout.y_for_row((end_display.row() + 1) as f32)
2269 } else {
2270 scrollbar_layout.y_for_row(end_display.row() as f32)
2271 };
2272
2273 if end_y - start_y < px(1.) {
2274 end_y = start_y + px(1.);
2275 }
2276 let bounds = Bounds::from_corners(
2277 point(scrollbar_layout.hitbox.left(), start_y),
2278 point(scrollbar_layout.hitbox.right(), end_y),
2279 );
2280
2281 let color = match diagnostic.diagnostic.severity {
2282 DiagnosticSeverity::ERROR => cx.theme().status().error,
2283 DiagnosticSeverity::WARNING => cx.theme().status().warning,
2284 DiagnosticSeverity::INFORMATION => cx.theme().status().info,
2285 _ => cx.theme().status().hint,
2286 };
2287 cx.paint_quad(quad(
2288 bounds,
2289 Corners::default(),
2290 color,
2291 Edges {
2292 top: Pixels::ZERO,
2293 right: px(1.),
2294 bottom: Pixels::ZERO,
2295 left: px(1.),
2296 },
2297 cx.theme().colors().scrollbar_thumb_border,
2298 ));
2299 }
2300 }
2301
2302 cx.paint_quad(quad(
2303 thumb_bounds,
2304 Corners::default(),
2305 cx.theme().colors().scrollbar_thumb_background,
2306 Edges {
2307 top: Pixels::ZERO,
2308 right: px(1.),
2309 bottom: Pixels::ZERO,
2310 left: px(1.),
2311 },
2312 cx.theme().colors().scrollbar_thumb_border,
2313 ));
2314 });
2315 }
2316
2317 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
2318
2319 let scroll_height = scrollbar_layout.scroll_height;
2320 let height = scrollbar_layout.height;
2321 let row_range = scrollbar_layout.visible_row_range.clone();
2322
2323 cx.on_mouse_event({
2324 let editor = self.editor.clone();
2325 let hitbox = scrollbar_layout.hitbox.clone();
2326 let mut mouse_position = cx.mouse_position();
2327 move |event: &MouseMoveEvent, phase, cx| {
2328 if phase == DispatchPhase::Capture {
2329 return;
2330 }
2331
2332 editor.update(cx, |editor, cx| {
2333 if event.pressed_button == Some(MouseButton::Left)
2334 && editor.scroll_manager.is_dragging_scrollbar()
2335 {
2336 let y = mouse_position.y;
2337 let new_y = event.position.y;
2338 if (hitbox.top()..hitbox.bottom()).contains(&y) {
2339 let mut position = editor.scroll_position(cx);
2340 position.y += (new_y - y) * scroll_height / height;
2341 if position.y < 0.0 {
2342 position.y = 0.0;
2343 }
2344 editor.set_scroll_position(position, cx);
2345 }
2346
2347 mouse_position = event.position;
2348 cx.stop_propagation();
2349 } else {
2350 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2351 if hitbox.is_hovered(cx) {
2352 editor.scroll_manager.show_scrollbar(cx);
2353 }
2354 }
2355 })
2356 }
2357 });
2358
2359 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
2360 cx.on_mouse_event({
2361 let editor = self.editor.clone();
2362 move |_: &MouseUpEvent, phase, cx| {
2363 if phase == DispatchPhase::Capture {
2364 return;
2365 }
2366
2367 editor.update(cx, |editor, cx| {
2368 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2369 cx.stop_propagation();
2370 });
2371 }
2372 });
2373 } else {
2374 cx.on_mouse_event({
2375 let editor = self.editor.clone();
2376 let hitbox = scrollbar_layout.hitbox.clone();
2377 move |event: &MouseDownEvent, phase, cx| {
2378 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
2379 return;
2380 }
2381
2382 editor.update(cx, |editor, cx| {
2383 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
2384
2385 let y = event.position.y;
2386 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
2387 let center_row =
2388 ((y - hitbox.top()) * scroll_height / height).round() as u32;
2389 let top_row = center_row
2390 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
2391 let mut position = editor.scroll_position(cx);
2392 position.y = top_row as f32;
2393 editor.set_scroll_position(position, cx);
2394 } else {
2395 editor.scroll_manager.show_scrollbar(cx);
2396 }
2397
2398 cx.stop_propagation();
2399 });
2400 }
2401 });
2402 }
2403 }
2404
2405 #[allow(clippy::too_many_arguments)]
2406 fn paint_highlighted_range(
2407 &self,
2408 range: Range<DisplayPoint>,
2409 color: Hsla,
2410 corner_radius: Pixels,
2411 line_end_overshoot: Pixels,
2412 layout: &EditorLayout,
2413 cx: &mut ElementContext,
2414 ) {
2415 let start_row = layout.visible_display_row_range.start;
2416 let end_row = layout.visible_display_row_range.end;
2417 if range.start != range.end {
2418 let row_range = if range.end.column() == 0 {
2419 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
2420 } else {
2421 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
2422 };
2423
2424 let highlighted_range = HighlightedRange {
2425 color,
2426 line_height: layout.position_map.line_height,
2427 corner_radius,
2428 start_y: layout.content_origin.y
2429 + row_range.start as f32 * layout.position_map.line_height
2430 - layout.position_map.scroll_pixel_position.y,
2431 lines: row_range
2432 .into_iter()
2433 .map(|row| {
2434 let line_layout =
2435 &layout.position_map.line_layouts[(row - start_row) as usize].line;
2436 HighlightedRangeLine {
2437 start_x: if row == range.start.row() {
2438 layout.content_origin.x
2439 + line_layout.x_for_index(range.start.column() as usize)
2440 - layout.position_map.scroll_pixel_position.x
2441 } else {
2442 layout.content_origin.x
2443 - layout.position_map.scroll_pixel_position.x
2444 },
2445 end_x: if row == range.end.row() {
2446 layout.content_origin.x
2447 + line_layout.x_for_index(range.end.column() as usize)
2448 - layout.position_map.scroll_pixel_position.x
2449 } else {
2450 layout.content_origin.x + line_layout.width + line_end_overshoot
2451 - layout.position_map.scroll_pixel_position.x
2452 },
2453 }
2454 })
2455 .collect(),
2456 };
2457
2458 highlighted_range.paint(layout.text_hitbox.bounds, cx);
2459 }
2460 }
2461
2462 fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2463 if layout.folds.is_empty() {
2464 return;
2465 }
2466
2467 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2468 let fold_corner_radius = 0.15 * layout.position_map.line_height;
2469 for mut fold in mem::take(&mut layout.folds) {
2470 fold.hover_element.paint(cx);
2471
2472 let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
2473 let fold_background = if hover_element.interactivity().active.unwrap() {
2474 cx.theme().colors().ghost_element_active
2475 } else if hover_element.interactivity().hovered.unwrap() {
2476 cx.theme().colors().ghost_element_hover
2477 } else {
2478 cx.theme().colors().ghost_element_background
2479 };
2480
2481 self.paint_highlighted_range(
2482 fold.display_range.clone(),
2483 fold_background,
2484 fold_corner_radius,
2485 fold_corner_radius * 2.,
2486 layout,
2487 cx,
2488 );
2489 }
2490 })
2491 }
2492
2493 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2494 for mut block in layout.blocks.drain(..) {
2495 block.element.paint(cx);
2496 }
2497 }
2498
2499 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2500 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
2501 mouse_context_menu.paint(cx);
2502 }
2503 }
2504
2505 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2506 cx.on_mouse_event({
2507 let position_map = layout.position_map.clone();
2508 let editor = self.editor.clone();
2509 let hitbox = layout.hitbox.clone();
2510 let mut delta = ScrollDelta::default();
2511
2512 move |event: &ScrollWheelEvent, phase, cx| {
2513 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
2514 delta = delta.coalesce(event.delta);
2515 editor.update(cx, |editor, cx| {
2516 let position_map: &PositionMap = &position_map;
2517
2518 let line_height = position_map.line_height;
2519 let max_glyph_width = position_map.em_width;
2520 let (delta, axis) = match delta {
2521 gpui::ScrollDelta::Pixels(mut pixels) => {
2522 //Trackpad
2523 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2524 (pixels, axis)
2525 }
2526
2527 gpui::ScrollDelta::Lines(lines) => {
2528 //Not trackpad
2529 let pixels =
2530 point(lines.x * max_glyph_width, lines.y * line_height);
2531 (pixels, None)
2532 }
2533 };
2534
2535 let scroll_position = position_map.snapshot.scroll_position();
2536 let x = (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width;
2537 let y = (scroll_position.y * line_height - delta.y) / line_height;
2538 let scroll_position =
2539 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2540 editor.scroll(scroll_position, axis, cx);
2541 cx.stop_propagation();
2542 });
2543 }
2544 }
2545 });
2546 }
2547
2548 fn paint_mouse_listeners(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2549 self.paint_scroll_wheel_listener(layout, cx);
2550
2551 cx.on_mouse_event({
2552 let position_map = layout.position_map.clone();
2553 let editor = self.editor.clone();
2554 let text_hitbox = layout.text_hitbox.clone();
2555 let gutter_hitbox = layout.gutter_hitbox.clone();
2556
2557 move |event: &MouseDownEvent, phase, cx| {
2558 if phase == DispatchPhase::Bubble {
2559 match event.button {
2560 MouseButton::Left => editor.update(cx, |editor, cx| {
2561 Self::mouse_left_down(
2562 editor,
2563 event,
2564 &position_map,
2565 &text_hitbox,
2566 &gutter_hitbox,
2567 cx,
2568 );
2569 }),
2570 MouseButton::Right => editor.update(cx, |editor, cx| {
2571 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
2572 }),
2573 _ => {}
2574 };
2575 }
2576 }
2577 });
2578
2579 cx.on_mouse_event({
2580 let editor = self.editor.clone();
2581 let position_map = layout.position_map.clone();
2582 let text_hitbox = layout.text_hitbox.clone();
2583
2584 move |event: &MouseUpEvent, phase, cx| {
2585 if phase == DispatchPhase::Bubble {
2586 editor.update(cx, |editor, cx| {
2587 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
2588 });
2589 }
2590 }
2591 });
2592 cx.on_mouse_event({
2593 let position_map = layout.position_map.clone();
2594 let editor = self.editor.clone();
2595 let text_hitbox = layout.text_hitbox.clone();
2596 let gutter_hitbox = layout.gutter_hitbox.clone();
2597
2598 move |event: &MouseMoveEvent, phase, cx| {
2599 if phase == DispatchPhase::Bubble {
2600 editor.update(cx, |editor, cx| {
2601 if event.pressed_button == Some(MouseButton::Left) {
2602 Self::mouse_dragged(
2603 editor,
2604 event,
2605 &position_map,
2606 text_hitbox.bounds,
2607 cx,
2608 )
2609 }
2610
2611 Self::mouse_moved(
2612 editor,
2613 event,
2614 &position_map,
2615 &text_hitbox,
2616 &gutter_hitbox,
2617 cx,
2618 )
2619 });
2620 }
2621 }
2622 });
2623 }
2624
2625 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
2626 bounds.upper_right().x - self.style.scrollbar_width
2627 }
2628
2629 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
2630 let style = &self.style;
2631 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2632 let layout = cx
2633 .text_system()
2634 .shape_line(
2635 SharedString::from(" ".repeat(column)),
2636 font_size,
2637 &[TextRun {
2638 len: column,
2639 font: style.text.font(),
2640 color: Hsla::default(),
2641 background_color: None,
2642 underline: None,
2643 strikethrough: None,
2644 }],
2645 )
2646 .unwrap();
2647
2648 layout.width
2649 }
2650
2651 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
2652 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
2653 self.column_pixels(digit_count, cx)
2654 }
2655}
2656
2657#[derive(Debug)]
2658pub(crate) struct LineWithInvisibles {
2659 pub line: ShapedLine,
2660 invisibles: Vec<Invisible>,
2661}
2662
2663impl LineWithInvisibles {
2664 fn from_chunks<'a>(
2665 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2666 text_style: &TextStyle,
2667 max_line_len: usize,
2668 max_line_count: usize,
2669 line_number_layouts: &[Option<ShapedLine>],
2670 editor_mode: EditorMode,
2671 cx: &WindowContext,
2672 ) -> Vec<Self> {
2673 let mut layouts = Vec::with_capacity(max_line_count);
2674 let mut line = String::new();
2675 let mut invisibles = Vec::new();
2676 let mut styles = Vec::new();
2677 let mut non_whitespace_added = false;
2678 let mut row = 0;
2679 let mut line_exceeded_max_len = false;
2680 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2681
2682 for highlighted_chunk in chunks.chain([HighlightedChunk {
2683 chunk: "\n",
2684 style: None,
2685 is_tab: false,
2686 }]) {
2687 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2688 if ix > 0 {
2689 let shaped_line = cx
2690 .text_system()
2691 .shape_line(line.clone().into(), font_size, &styles)
2692 .unwrap();
2693 layouts.push(Self {
2694 line: shaped_line,
2695 invisibles: std::mem::take(&mut invisibles),
2696 });
2697
2698 line.clear();
2699 styles.clear();
2700 row += 1;
2701 line_exceeded_max_len = false;
2702 non_whitespace_added = false;
2703 if row == max_line_count {
2704 return layouts;
2705 }
2706 }
2707
2708 if !line_chunk.is_empty() && !line_exceeded_max_len {
2709 let text_style = if let Some(style) = highlighted_chunk.style {
2710 Cow::Owned(text_style.clone().highlight(style))
2711 } else {
2712 Cow::Borrowed(text_style)
2713 };
2714
2715 if line.len() + line_chunk.len() > max_line_len {
2716 let mut chunk_len = max_line_len - line.len();
2717 while !line_chunk.is_char_boundary(chunk_len) {
2718 chunk_len -= 1;
2719 }
2720 line_chunk = &line_chunk[..chunk_len];
2721 line_exceeded_max_len = true;
2722 }
2723
2724 styles.push(TextRun {
2725 len: line_chunk.len(),
2726 font: text_style.font(),
2727 color: text_style.color,
2728 background_color: text_style.background_color,
2729 underline: text_style.underline,
2730 strikethrough: text_style.strikethrough,
2731 });
2732
2733 if editor_mode == EditorMode::Full {
2734 // Line wrap pads its contents with fake whitespaces,
2735 // avoid printing them
2736 let inside_wrapped_string = line_number_layouts
2737 .get(row)
2738 .and_then(|layout| layout.as_ref())
2739 .is_none();
2740 if highlighted_chunk.is_tab {
2741 if non_whitespace_added || !inside_wrapped_string {
2742 invisibles.push(Invisible::Tab {
2743 line_start_offset: line.len(),
2744 });
2745 }
2746 } else {
2747 invisibles.extend(
2748 line_chunk
2749 .chars()
2750 .enumerate()
2751 .filter(|(_, line_char)| {
2752 let is_whitespace = line_char.is_whitespace();
2753 non_whitespace_added |= !is_whitespace;
2754 is_whitespace
2755 && (non_whitespace_added || !inside_wrapped_string)
2756 })
2757 .map(|(whitespace_index, _)| Invisible::Whitespace {
2758 line_offset: line.len() + whitespace_index,
2759 }),
2760 )
2761 }
2762 }
2763
2764 line.push_str(line_chunk);
2765 }
2766 }
2767 }
2768
2769 layouts
2770 }
2771
2772 fn draw(
2773 &self,
2774 layout: &EditorLayout,
2775 row: u32,
2776 content_origin: gpui::Point<Pixels>,
2777 whitespace_setting: ShowWhitespaceSetting,
2778 selection_ranges: &[Range<DisplayPoint>],
2779 cx: &mut ElementContext,
2780 ) {
2781 let line_height = layout.position_map.line_height;
2782 let line_y = line_height * row as f32 - layout.position_map.scroll_pixel_position.y;
2783
2784 self.line
2785 .paint(
2786 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y),
2787 line_height,
2788 cx,
2789 )
2790 .log_err();
2791
2792 self.draw_invisibles(
2793 &selection_ranges,
2794 layout,
2795 content_origin,
2796 line_y,
2797 row,
2798 line_height,
2799 whitespace_setting,
2800 cx,
2801 );
2802 }
2803
2804 #[allow(clippy::too_many_arguments)]
2805 fn draw_invisibles(
2806 &self,
2807 selection_ranges: &[Range<DisplayPoint>],
2808 layout: &EditorLayout,
2809 content_origin: gpui::Point<Pixels>,
2810 line_y: Pixels,
2811 row: u32,
2812 line_height: Pixels,
2813 whitespace_setting: ShowWhitespaceSetting,
2814 cx: &mut ElementContext,
2815 ) {
2816 let allowed_invisibles_regions = match whitespace_setting {
2817 ShowWhitespaceSetting::None => return,
2818 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2819 ShowWhitespaceSetting::All => None,
2820 };
2821
2822 for invisible in &self.invisibles {
2823 let (&token_offset, invisible_symbol) = match invisible {
2824 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2825 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2826 };
2827
2828 let x_offset = self.line.x_for_index(token_offset);
2829 let invisible_offset =
2830 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2831 let origin = content_origin
2832 + gpui::point(
2833 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
2834 line_y,
2835 );
2836
2837 if let Some(allowed_regions) = allowed_invisibles_regions {
2838 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2839 if !allowed_regions
2840 .iter()
2841 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2842 {
2843 continue;
2844 }
2845 }
2846 invisible_symbol.paint(origin, line_height, cx).log_err();
2847 }
2848 }
2849}
2850
2851#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2852enum Invisible {
2853 Tab { line_start_offset: usize },
2854 Whitespace { line_offset: usize },
2855}
2856
2857impl Element for EditorElement {
2858 type BeforeLayout = ();
2859 type AfterLayout = EditorLayout;
2860
2861 fn before_layout(&mut self, cx: &mut ElementContext) -> (gpui::LayoutId, ()) {
2862 self.editor.update(cx, |editor, cx| {
2863 editor.set_style(self.style.clone(), cx);
2864
2865 let layout_id = match editor.mode {
2866 EditorMode::SingleLine => {
2867 let rem_size = cx.rem_size();
2868 let mut style = Style::default();
2869 style.size.width = relative(1.).into();
2870 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2871 cx.with_element_context(|cx| cx.request_layout(&style, None))
2872 }
2873 EditorMode::AutoHeight { max_lines } => {
2874 let editor_handle = cx.view().clone();
2875 let max_line_number_width =
2876 self.max_line_number_width(&editor.snapshot(cx), cx);
2877 cx.with_element_context(|cx| {
2878 cx.request_measured_layout(
2879 Style::default(),
2880 move |known_dimensions, _, cx| {
2881 editor_handle
2882 .update(cx, |editor, cx| {
2883 compute_auto_height_layout(
2884 editor,
2885 max_lines,
2886 max_line_number_width,
2887 known_dimensions,
2888 cx,
2889 )
2890 })
2891 .unwrap_or_default()
2892 },
2893 )
2894 })
2895 }
2896 EditorMode::Full => {
2897 let mut style = Style::default();
2898 style.size.width = relative(1.).into();
2899 style.size.height = relative(1.).into();
2900 cx.with_element_context(|cx| cx.request_layout(&style, None))
2901 }
2902 };
2903
2904 (layout_id, ())
2905 })
2906 }
2907
2908 fn after_layout(
2909 &mut self,
2910 bounds: Bounds<Pixels>,
2911 _: &mut Self::BeforeLayout,
2912 cx: &mut ElementContext,
2913 ) -> Self::AfterLayout {
2914 let text_style = TextStyleRefinement {
2915 font_size: Some(self.style.text.font_size),
2916 line_height: Some(self.style.text.line_height),
2917 ..Default::default()
2918 };
2919 cx.with_text_style(Some(text_style), |cx| {
2920 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2921 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
2922 let style = self.style.clone();
2923
2924 let font_id = cx.text_system().resolve_font(&style.text.font());
2925 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2926 let line_height = style.text.line_height_in_pixels(cx.rem_size());
2927 let em_width = cx
2928 .text_system()
2929 .typographic_bounds(font_id, font_size, 'm')
2930 .unwrap()
2931 .size
2932 .width;
2933 let em_advance = cx
2934 .text_system()
2935 .advance(font_id, font_size, 'm')
2936 .unwrap()
2937 .width;
2938
2939 let gutter_dimensions = snapshot.gutter_dimensions(
2940 font_id,
2941 font_size,
2942 em_width,
2943 self.max_line_number_width(&snapshot, cx),
2944 cx,
2945 );
2946 let text_width = bounds.size.width - gutter_dimensions.width;
2947 let overscroll = size(em_width, px(0.));
2948
2949 snapshot = self.editor.update(cx, |editor, cx| {
2950 editor.gutter_width = gutter_dimensions.width;
2951 editor.set_visible_line_count(bounds.size.height / line_height, cx);
2952
2953 let editor_width =
2954 text_width - gutter_dimensions.margin - overscroll.width - em_width;
2955 let wrap_width = match editor.soft_wrap_mode(cx) {
2956 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2957 SoftWrap::EditorWidth => editor_width,
2958 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2959 };
2960
2961 if editor.set_wrap_width(Some(wrap_width), cx) {
2962 editor.snapshot(cx)
2963 } else {
2964 snapshot
2965 }
2966 });
2967
2968 let wrap_guides = self
2969 .editor
2970 .read(cx)
2971 .wrap_guides(cx)
2972 .iter()
2973 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2974 .collect::<SmallVec<[_; 2]>>();
2975
2976 let hitbox = cx.insert_hitbox(bounds, false);
2977 let gutter_hitbox = cx.insert_hitbox(
2978 Bounds {
2979 origin: bounds.origin,
2980 size: size(gutter_dimensions.width, bounds.size.height),
2981 },
2982 false,
2983 );
2984 let text_hitbox = cx.insert_hitbox(
2985 Bounds {
2986 origin: gutter_hitbox.upper_right(),
2987 size: size(text_width, bounds.size.height),
2988 },
2989 false,
2990 );
2991 // Offset the content_bounds from the text_bounds by the gutter margin (which
2992 // is roughly half a character wide) to make hit testing work more like how we want.
2993 let content_origin =
2994 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
2995
2996 let autoscroll_horizontally = self.editor.update(cx, |editor, cx| {
2997 let autoscroll_horizontally =
2998 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
2999 snapshot = editor.snapshot(cx);
3000 autoscroll_horizontally
3001 });
3002
3003 let mut scroll_position = snapshot.scroll_position();
3004 // The scroll position is a fractional point, the whole number of which represents
3005 // the top of the window in terms of display rows.
3006 let start_row = scroll_position.y as u32;
3007 let height_in_lines = bounds.size.height / line_height;
3008 let max_row = snapshot.max_point().row();
3009
3010 // Add 1 to ensure selections bleed off screen
3011 let end_row =
3012 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
3013
3014 let start_anchor = if start_row == 0 {
3015 Anchor::min()
3016 } else {
3017 snapshot.buffer_snapshot.anchor_before(
3018 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
3019 )
3020 };
3021 let end_anchor = if end_row > max_row {
3022 Anchor::max()
3023 } else {
3024 snapshot.buffer_snapshot.anchor_before(
3025 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
3026 )
3027 };
3028
3029 let highlighted_rows = self
3030 .editor
3031 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
3032 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
3033 start_anchor..end_anchor,
3034 &snapshot.display_snapshot,
3035 cx.theme().colors(),
3036 );
3037
3038 let redacted_ranges = self.editor.read(cx).redacted_ranges(
3039 start_anchor..end_anchor,
3040 &snapshot.display_snapshot,
3041 cx,
3042 );
3043
3044 let (selections, active_rows, newest_selection_head) = self.layout_selections(
3045 start_anchor,
3046 end_anchor,
3047 &snapshot,
3048 start_row,
3049 end_row,
3050 cx,
3051 );
3052
3053 let (line_numbers, fold_statuses) = self.layout_line_numbers(
3054 start_row..end_row,
3055 &active_rows,
3056 newest_selection_head,
3057 &snapshot,
3058 cx,
3059 );
3060
3061 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
3062
3063 let mut max_visible_line_width = Pixels::ZERO;
3064 let line_layouts =
3065 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
3066 for line_with_invisibles in &line_layouts {
3067 if line_with_invisibles.line.width > max_visible_line_width {
3068 max_visible_line_width = line_with_invisibles.line.width;
3069 }
3070 }
3071
3072 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
3073 .unwrap()
3074 .width;
3075 let mut scroll_width =
3076 longest_line_width.max(max_visible_line_width) + overscroll.width;
3077 let mut blocks = self.build_blocks(
3078 start_row..end_row,
3079 &snapshot,
3080 &hitbox,
3081 &text_hitbox,
3082 &mut scroll_width,
3083 &gutter_dimensions,
3084 em_width,
3085 gutter_dimensions.width + gutter_dimensions.margin,
3086 line_height,
3087 &line_layouts,
3088 cx,
3089 );
3090
3091 let scroll_max = point(
3092 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
3093 max_row as f32,
3094 );
3095
3096 self.editor.update(cx, |editor, cx| {
3097 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3098
3099 let autoscrolled = if autoscroll_horizontally {
3100 editor.autoscroll_horizontally(
3101 start_row,
3102 text_hitbox.size.width,
3103 scroll_width,
3104 em_width,
3105 &line_layouts,
3106 cx,
3107 )
3108 } else {
3109 false
3110 };
3111
3112 if clamped || autoscrolled {
3113 snapshot = editor.snapshot(cx);
3114 scroll_position = snapshot.scroll_position();
3115 }
3116 });
3117
3118 let scroll_pixel_position = point(
3119 scroll_position.x * em_width,
3120 scroll_position.y * line_height,
3121 );
3122
3123 cx.with_element_id(Some("blocks"), |cx| {
3124 self.layout_blocks(
3125 &mut blocks,
3126 &hitbox,
3127 line_height,
3128 scroll_pixel_position,
3129 cx,
3130 );
3131 });
3132
3133 let cursors = self.layout_cursors(
3134 &snapshot,
3135 &selections,
3136 start_row..end_row,
3137 &line_layouts,
3138 &text_hitbox,
3139 content_origin,
3140 scroll_pixel_position,
3141 line_height,
3142 em_width,
3143 cx,
3144 );
3145
3146 let scrollbar_layout = self.layout_scrollbar(
3147 &snapshot,
3148 bounds,
3149 scroll_position,
3150 line_height,
3151 height_in_lines,
3152 cx,
3153 );
3154
3155 let folds = cx.with_element_id(Some("folds"), |cx| {
3156 self.layout_folds(
3157 &snapshot,
3158 content_origin,
3159 start_anchor..end_anchor,
3160 start_row..end_row,
3161 scroll_pixel_position,
3162 line_height,
3163 &line_layouts,
3164 cx,
3165 )
3166 });
3167
3168 let gutter_settings = EditorSettings::get_global(cx).gutter;
3169
3170 let mut context_menu_visible = false;
3171 let mut code_actions_indicator = None;
3172 if let Some(newest_selection_head) = newest_selection_head {
3173 if (start_row..end_row).contains(&newest_selection_head.row()) {
3174 context_menu_visible = self.layout_context_menu(
3175 line_height,
3176 &hitbox,
3177 &text_hitbox,
3178 content_origin,
3179 start_row,
3180 scroll_pixel_position,
3181 &line_layouts,
3182 newest_selection_head,
3183 cx,
3184 );
3185 if gutter_settings.code_actions {
3186 code_actions_indicator = self.layout_code_actions_indicator(
3187 line_height,
3188 newest_selection_head,
3189 scroll_pixel_position,
3190 &gutter_dimensions,
3191 &gutter_hitbox,
3192 cx,
3193 );
3194 }
3195 }
3196 }
3197
3198 if !context_menu_visible && !cx.has_active_drag() {
3199 self.layout_hover_popovers(
3200 &snapshot,
3201 &hitbox,
3202 &text_hitbox,
3203 start_row..end_row,
3204 content_origin,
3205 scroll_pixel_position,
3206 &line_layouts,
3207 line_height,
3208 em_width,
3209 cx,
3210 );
3211 }
3212
3213 let mouse_context_menu = self.layout_mouse_context_menu(cx);
3214
3215 let fold_indicators = if gutter_settings.folds {
3216 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
3217 self.layout_gutter_fold_indicators(
3218 fold_statuses,
3219 line_height,
3220 &gutter_dimensions,
3221 gutter_settings,
3222 scroll_pixel_position,
3223 &gutter_hitbox,
3224 cx,
3225 )
3226 })
3227 } else {
3228 Vec::new()
3229 };
3230
3231 let invisible_symbol_font_size = font_size / 2.;
3232 let tab_invisible = cx
3233 .text_system()
3234 .shape_line(
3235 "→".into(),
3236 invisible_symbol_font_size,
3237 &[TextRun {
3238 len: "→".len(),
3239 font: self.style.text.font(),
3240 color: cx.theme().colors().editor_invisible,
3241 background_color: None,
3242 underline: None,
3243 strikethrough: None,
3244 }],
3245 )
3246 .unwrap();
3247 let space_invisible = cx
3248 .text_system()
3249 .shape_line(
3250 "•".into(),
3251 invisible_symbol_font_size,
3252 &[TextRun {
3253 len: "•".len(),
3254 font: self.style.text.font(),
3255 color: cx.theme().colors().editor_invisible,
3256 background_color: None,
3257 underline: None,
3258 strikethrough: None,
3259 }],
3260 )
3261 .unwrap();
3262
3263 EditorLayout {
3264 mode: snapshot.mode,
3265 position_map: Arc::new(PositionMap {
3266 size: bounds.size,
3267 scroll_pixel_position,
3268 scroll_max,
3269 line_layouts,
3270 line_height,
3271 em_width,
3272 em_advance,
3273 snapshot,
3274 }),
3275 visible_display_row_range: start_row..end_row,
3276 wrap_guides,
3277 hitbox,
3278 text_hitbox,
3279 gutter_hitbox,
3280 gutter_dimensions,
3281 content_origin,
3282 scrollbar_layout,
3283 max_row,
3284 active_rows,
3285 highlighted_rows,
3286 highlighted_ranges,
3287 redacted_ranges,
3288 line_numbers,
3289 display_hunks,
3290 folds,
3291 blocks,
3292 cursors,
3293 selections,
3294 mouse_context_menu,
3295 code_actions_indicator,
3296 fold_indicators,
3297 tab_invisible,
3298 space_invisible,
3299 }
3300 })
3301 })
3302 }
3303
3304 fn paint(
3305 &mut self,
3306 bounds: Bounds<gpui::Pixels>,
3307 _: &mut Self::BeforeLayout,
3308 layout: &mut Self::AfterLayout,
3309 cx: &mut ElementContext,
3310 ) {
3311 let focus_handle = self.editor.focus_handle(cx);
3312 let key_context = self.editor.read(cx).key_context(cx);
3313 cx.set_focus_handle(&focus_handle);
3314 cx.set_key_context(key_context);
3315 cx.set_view_id(self.editor.entity_id());
3316 cx.handle_input(
3317 &focus_handle,
3318 ElementInputHandler::new(bounds, self.editor.clone()),
3319 );
3320 self.register_actions(cx);
3321 self.register_key_listeners(cx, layout);
3322
3323 let text_style = TextStyleRefinement {
3324 font_size: Some(self.style.text.font_size),
3325 line_height: Some(self.style.text.line_height),
3326 ..Default::default()
3327 };
3328 cx.with_text_style(Some(text_style), |cx| {
3329 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3330 self.paint_mouse_listeners(layout, cx);
3331
3332 self.paint_background(layout, cx);
3333 if layout.gutter_hitbox.size.width > Pixels::ZERO {
3334 self.paint_gutter(layout, cx);
3335 }
3336 self.paint_text(layout, cx);
3337
3338 if !layout.blocks.is_empty() {
3339 cx.with_element_id(Some("blocks"), |cx| {
3340 self.paint_blocks(layout, cx);
3341 });
3342 }
3343
3344 self.paint_scrollbar(layout, cx);
3345 self.paint_mouse_context_menu(layout, cx);
3346 });
3347 })
3348 }
3349}
3350
3351impl IntoElement for EditorElement {
3352 type Element = Self;
3353
3354 fn into_element(self) -> Self::Element {
3355 self
3356 }
3357}
3358
3359type BufferRow = u32;
3360
3361pub struct EditorLayout {
3362 position_map: Arc<PositionMap>,
3363 hitbox: Hitbox,
3364 text_hitbox: Hitbox,
3365 gutter_hitbox: Hitbox,
3366 gutter_dimensions: GutterDimensions,
3367 content_origin: gpui::Point<Pixels>,
3368 scrollbar_layout: Option<ScrollbarLayout>,
3369 mode: EditorMode,
3370 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3371 visible_display_row_range: Range<u32>,
3372 active_rows: BTreeMap<u32, bool>,
3373 highlighted_rows: BTreeMap<u32, Hsla>,
3374 line_numbers: Vec<Option<ShapedLine>>,
3375 display_hunks: Vec<DisplayDiffHunk>,
3376 folds: Vec<FoldLayout>,
3377 blocks: Vec<BlockLayout>,
3378 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3379 redacted_ranges: Vec<Range<DisplayPoint>>,
3380 cursors: Vec<CursorLayout>,
3381 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3382 max_row: u32,
3383 code_actions_indicator: Option<AnyElement>,
3384 fold_indicators: Vec<Option<AnyElement>>,
3385 mouse_context_menu: Option<AnyElement>,
3386 tab_invisible: ShapedLine,
3387 space_invisible: ShapedLine,
3388}
3389
3390impl EditorLayout {
3391 fn line_end_overshoot(&self) -> Pixels {
3392 0.15 * self.position_map.line_height
3393 }
3394}
3395
3396struct ScrollbarLayout {
3397 hitbox: Hitbox,
3398 visible_row_range: Range<f32>,
3399 visible: bool,
3400 height: Pixels,
3401 scroll_height: f32,
3402 first_row_y_offset: Pixels,
3403 row_height: Pixels,
3404}
3405
3406impl ScrollbarLayout {
3407 fn thumb_bounds(&self) -> Bounds<Pixels> {
3408 let thumb_top = self.y_for_row(self.visible_row_range.start) - self.first_row_y_offset;
3409 let thumb_bottom = self.y_for_row(self.visible_row_range.end) + self.first_row_y_offset;
3410 Bounds::from_corners(
3411 point(self.hitbox.left(), thumb_top),
3412 point(self.hitbox.right(), thumb_bottom),
3413 )
3414 }
3415
3416 fn y_for_row(&self, row: f32) -> Pixels {
3417 self.hitbox.top() + self.first_row_y_offset + row * self.row_height
3418 }
3419}
3420
3421struct FoldLayout {
3422 display_range: Range<DisplayPoint>,
3423 hover_element: AnyElement,
3424}
3425
3426struct PositionMap {
3427 size: Size<Pixels>,
3428 line_height: Pixels,
3429 scroll_pixel_position: gpui::Point<Pixels>,
3430 scroll_max: gpui::Point<f32>,
3431 em_width: Pixels,
3432 em_advance: Pixels,
3433 line_layouts: Vec<LineWithInvisibles>,
3434 snapshot: EditorSnapshot,
3435}
3436
3437#[derive(Debug, Copy, Clone)]
3438pub struct PointForPosition {
3439 pub previous_valid: DisplayPoint,
3440 pub next_valid: DisplayPoint,
3441 pub exact_unclipped: DisplayPoint,
3442 pub column_overshoot_after_line_end: u32,
3443}
3444
3445impl PointForPosition {
3446 pub fn as_valid(&self) -> Option<DisplayPoint> {
3447 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3448 Some(self.previous_valid)
3449 } else {
3450 None
3451 }
3452 }
3453}
3454
3455impl PositionMap {
3456 fn point_for_position(
3457 &self,
3458 text_bounds: Bounds<Pixels>,
3459 position: gpui::Point<Pixels>,
3460 ) -> PointForPosition {
3461 let scroll_position = self.snapshot.scroll_position();
3462 let position = position - text_bounds.origin;
3463 let y = position.y.max(px(0.)).min(self.size.height);
3464 let x = position.x + (scroll_position.x * self.em_width);
3465 let row = ((y / self.line_height) + scroll_position.y) as u32;
3466
3467 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3468 .line_layouts
3469 .get(row as usize - scroll_position.y as usize)
3470 .map(|LineWithInvisibles { line, .. }| line)
3471 {
3472 if let Some(ix) = line.index_for_x(x) {
3473 (ix as u32, px(0.))
3474 } else {
3475 (line.len as u32, px(0.).max(x - line.width))
3476 }
3477 } else {
3478 (0, x)
3479 };
3480
3481 let mut exact_unclipped = DisplayPoint::new(row, column);
3482 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3483 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3484
3485 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3486 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3487 PointForPosition {
3488 previous_valid,
3489 next_valid,
3490 exact_unclipped,
3491 column_overshoot_after_line_end,
3492 }
3493 }
3494}
3495
3496struct BlockLayout {
3497 row: u32,
3498 element: AnyElement,
3499 available_space: Size<AvailableSpace>,
3500 style: BlockStyle,
3501}
3502
3503fn layout_line(
3504 row: u32,
3505 snapshot: &EditorSnapshot,
3506 style: &EditorStyle,
3507 cx: &WindowContext,
3508) -> Result<ShapedLine> {
3509 let mut line = snapshot.line(row);
3510
3511 if line.len() > MAX_LINE_LEN {
3512 let mut len = MAX_LINE_LEN;
3513 while !line.is_char_boundary(len) {
3514 len -= 1;
3515 }
3516
3517 line.truncate(len);
3518 }
3519
3520 cx.text_system().shape_line(
3521 line.into(),
3522 style.text.font_size.to_pixels(cx.rem_size()),
3523 &[TextRun {
3524 len: snapshot.line_len(row) as usize,
3525 font: style.text.font(),
3526 color: Hsla::default(),
3527 background_color: None,
3528 underline: None,
3529 strikethrough: None,
3530 }],
3531 )
3532}
3533
3534pub struct CursorLayout {
3535 origin: gpui::Point<Pixels>,
3536 block_width: Pixels,
3537 line_height: Pixels,
3538 color: Hsla,
3539 shape: CursorShape,
3540 block_text: Option<ShapedLine>,
3541 cursor_name: Option<AnyElement>,
3542}
3543
3544#[derive(Debug)]
3545pub struct CursorName {
3546 string: SharedString,
3547 color: Hsla,
3548 is_top_row: bool,
3549}
3550
3551impl CursorLayout {
3552 pub fn new(
3553 origin: gpui::Point<Pixels>,
3554 block_width: Pixels,
3555 line_height: Pixels,
3556 color: Hsla,
3557 shape: CursorShape,
3558 block_text: Option<ShapedLine>,
3559 ) -> CursorLayout {
3560 CursorLayout {
3561 origin,
3562 block_width,
3563 line_height,
3564 color,
3565 shape,
3566 block_text,
3567 cursor_name: None,
3568 }
3569 }
3570
3571 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3572 Bounds {
3573 origin: self.origin + origin,
3574 size: size(self.block_width, self.line_height),
3575 }
3576 }
3577
3578 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3579 match self.shape {
3580 CursorShape::Bar => Bounds {
3581 origin: self.origin + origin,
3582 size: size(px(2.0), self.line_height),
3583 },
3584 CursorShape::Block | CursorShape::Hollow => Bounds {
3585 origin: self.origin + origin,
3586 size: size(self.block_width, self.line_height),
3587 },
3588 CursorShape::Underscore => Bounds {
3589 origin: self.origin
3590 + origin
3591 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3592 size: size(self.block_width, px(2.0)),
3593 },
3594 }
3595 }
3596
3597 pub fn layout(
3598 &mut self,
3599 origin: gpui::Point<Pixels>,
3600 cursor_name: Option<CursorName>,
3601 cx: &mut ElementContext,
3602 ) {
3603 if let Some(cursor_name) = cursor_name {
3604 let bounds = self.bounds(origin);
3605 let text_size = self.line_height / 1.5;
3606
3607 let name_origin = if cursor_name.is_top_row {
3608 point(bounds.right() - px(1.), bounds.top())
3609 } else {
3610 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3611 };
3612 let mut name_element = div()
3613 .bg(self.color)
3614 .text_size(text_size)
3615 .px_0p5()
3616 .line_height(text_size + px(2.))
3617 .text_color(cursor_name.color)
3618 .child(cursor_name.string.clone())
3619 .into_any_element();
3620
3621 name_element.layout(
3622 name_origin,
3623 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3624 cx,
3625 );
3626
3627 self.cursor_name = Some(name_element);
3628 }
3629 }
3630
3631 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3632 let bounds = self.bounds(origin);
3633
3634 //Draw background or border quad
3635 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3636 outline(bounds, self.color)
3637 } else {
3638 fill(bounds, self.color)
3639 };
3640
3641 if let Some(name) = &mut self.cursor_name {
3642 name.paint(cx);
3643 }
3644
3645 cx.paint_quad(cursor);
3646
3647 if let Some(block_text) = &self.block_text {
3648 block_text
3649 .paint(self.origin + origin, self.line_height, cx)
3650 .log_err();
3651 }
3652 }
3653
3654 pub fn shape(&self) -> CursorShape {
3655 self.shape
3656 }
3657}
3658
3659#[derive(Debug)]
3660pub struct HighlightedRange {
3661 pub start_y: Pixels,
3662 pub line_height: Pixels,
3663 pub lines: Vec<HighlightedRangeLine>,
3664 pub color: Hsla,
3665 pub corner_radius: Pixels,
3666}
3667
3668#[derive(Debug)]
3669pub struct HighlightedRangeLine {
3670 pub start_x: Pixels,
3671 pub end_x: Pixels,
3672}
3673
3674impl HighlightedRange {
3675 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3676 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3677 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3678 self.paint_lines(
3679 self.start_y + self.line_height,
3680 &self.lines[1..],
3681 bounds,
3682 cx,
3683 );
3684 } else {
3685 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3686 }
3687 }
3688
3689 fn paint_lines(
3690 &self,
3691 start_y: Pixels,
3692 lines: &[HighlightedRangeLine],
3693 _bounds: Bounds<Pixels>,
3694 cx: &mut ElementContext,
3695 ) {
3696 if lines.is_empty() {
3697 return;
3698 }
3699
3700 let first_line = lines.first().unwrap();
3701 let last_line = lines.last().unwrap();
3702
3703 let first_top_left = point(first_line.start_x, start_y);
3704 let first_top_right = point(first_line.end_x, start_y);
3705
3706 let curve_height = point(Pixels::ZERO, self.corner_radius);
3707 let curve_width = |start_x: Pixels, end_x: Pixels| {
3708 let max = (end_x - start_x) / 2.;
3709 let width = if max < self.corner_radius {
3710 max
3711 } else {
3712 self.corner_radius
3713 };
3714
3715 point(width, Pixels::ZERO)
3716 };
3717
3718 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3719 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3720 path.curve_to(first_top_right + curve_height, first_top_right);
3721
3722 let mut iter = lines.iter().enumerate().peekable();
3723 while let Some((ix, line)) = iter.next() {
3724 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3725
3726 if let Some((_, next_line)) = iter.peek() {
3727 let next_top_right = point(next_line.end_x, bottom_right.y);
3728
3729 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3730 Ordering::Equal => {
3731 path.line_to(bottom_right);
3732 }
3733 Ordering::Less => {
3734 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3735 path.line_to(bottom_right - curve_height);
3736 if self.corner_radius > Pixels::ZERO {
3737 path.curve_to(bottom_right - curve_width, bottom_right);
3738 }
3739 path.line_to(next_top_right + curve_width);
3740 if self.corner_radius > Pixels::ZERO {
3741 path.curve_to(next_top_right + curve_height, next_top_right);
3742 }
3743 }
3744 Ordering::Greater => {
3745 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3746 path.line_to(bottom_right - curve_height);
3747 if self.corner_radius > Pixels::ZERO {
3748 path.curve_to(bottom_right + curve_width, bottom_right);
3749 }
3750 path.line_to(next_top_right - curve_width);
3751 if self.corner_radius > Pixels::ZERO {
3752 path.curve_to(next_top_right + curve_height, next_top_right);
3753 }
3754 }
3755 }
3756 } else {
3757 let curve_width = curve_width(line.start_x, line.end_x);
3758 path.line_to(bottom_right - curve_height);
3759 if self.corner_radius > Pixels::ZERO {
3760 path.curve_to(bottom_right - curve_width, bottom_right);
3761 }
3762
3763 let bottom_left = point(line.start_x, bottom_right.y);
3764 path.line_to(bottom_left + curve_width);
3765 if self.corner_radius > Pixels::ZERO {
3766 path.curve_to(bottom_left - curve_height, bottom_left);
3767 }
3768 }
3769 }
3770
3771 if first_line.start_x > last_line.start_x {
3772 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3773 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3774 path.line_to(second_top_left + curve_height);
3775 if self.corner_radius > Pixels::ZERO {
3776 path.curve_to(second_top_left + curve_width, second_top_left);
3777 }
3778 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3779 path.line_to(first_bottom_left - curve_width);
3780 if self.corner_radius > Pixels::ZERO {
3781 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3782 }
3783 }
3784
3785 path.line_to(first_top_left + curve_height);
3786 if self.corner_radius > Pixels::ZERO {
3787 path.curve_to(first_top_left + top_curve_width, first_top_left);
3788 }
3789 path.line_to(first_top_right - top_curve_width);
3790
3791 cx.paint_path(path, self.color);
3792 }
3793}
3794
3795pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3796 (delta.pow(1.5) / 100.0).into()
3797}
3798
3799fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3800 (delta.pow(1.2) / 300.0).into()
3801}
3802
3803#[cfg(test)]
3804mod tests {
3805 use super::*;
3806 use crate::{
3807 display_map::{BlockDisposition, BlockProperties},
3808 editor_tests::{init_test, update_test_language_settings},
3809 Editor, MultiBuffer,
3810 };
3811 use gpui::TestAppContext;
3812 use language::language_settings;
3813 use log::info;
3814 use std::{num::NonZeroU32, sync::Arc};
3815 use util::test::sample_text;
3816
3817 #[gpui::test]
3818 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3819 init_test(cx, |_| {});
3820 let window = cx.add_window(|cx| {
3821 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3822 Editor::new(EditorMode::Full, buffer, None, cx)
3823 });
3824
3825 let editor = window.root(cx).unwrap();
3826 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3827 let element = EditorElement::new(&editor, style);
3828 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
3829
3830 let layouts = cx
3831 .update_window(*window, |_, cx| {
3832 cx.with_element_context(|cx| {
3833 element
3834 .layout_line_numbers(
3835 0..6,
3836 &Default::default(),
3837 Some(DisplayPoint::new(0, 0)),
3838 &snapshot,
3839 cx,
3840 )
3841 .0
3842 })
3843 })
3844 .unwrap();
3845 assert_eq!(layouts.len(), 6);
3846
3847 let relative_rows = window
3848 .update(cx, |editor, cx| {
3849 let snapshot = editor.snapshot(cx);
3850 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3851 })
3852 .unwrap();
3853 assert_eq!(relative_rows[&0], 3);
3854 assert_eq!(relative_rows[&1], 2);
3855 assert_eq!(relative_rows[&2], 1);
3856 // current line has no relative number
3857 assert_eq!(relative_rows[&4], 1);
3858 assert_eq!(relative_rows[&5], 2);
3859
3860 // works if cursor is before screen
3861 let relative_rows = window
3862 .update(cx, |editor, cx| {
3863 let snapshot = editor.snapshot(cx);
3864
3865 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3866 })
3867 .unwrap();
3868 assert_eq!(relative_rows.len(), 3);
3869 assert_eq!(relative_rows[&3], 2);
3870 assert_eq!(relative_rows[&4], 3);
3871 assert_eq!(relative_rows[&5], 4);
3872
3873 // works if cursor is after screen
3874 let relative_rows = window
3875 .update(cx, |editor, cx| {
3876 let snapshot = editor.snapshot(cx);
3877
3878 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3879 })
3880 .unwrap();
3881 assert_eq!(relative_rows.len(), 3);
3882 assert_eq!(relative_rows[&0], 5);
3883 assert_eq!(relative_rows[&1], 4);
3884 assert_eq!(relative_rows[&2], 3);
3885 }
3886
3887 #[gpui::test]
3888 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3889 init_test(cx, |_| {});
3890
3891 let window = cx.add_window(|cx| {
3892 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3893 Editor::new(EditorMode::Full, buffer, None, cx)
3894 });
3895 let editor = window.root(cx).unwrap();
3896 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3897 let mut element = EditorElement::new(&editor, style);
3898
3899 window
3900 .update(cx, |editor, cx| {
3901 editor.cursor_shape = CursorShape::Block;
3902 editor.change_selections(None, cx, |s| {
3903 s.select_ranges([
3904 Point::new(0, 0)..Point::new(1, 0),
3905 Point::new(3, 2)..Point::new(3, 3),
3906 Point::new(5, 6)..Point::new(6, 0),
3907 ]);
3908 });
3909 })
3910 .unwrap();
3911 let state = cx
3912 .update_window(window.into(), |_view, cx| {
3913 cx.with_element_context(|cx| {
3914 element.after_layout(
3915 Bounds {
3916 origin: point(px(500.), px(500.)),
3917 size: size(px(500.), px(500.)),
3918 },
3919 &mut (),
3920 cx,
3921 )
3922 })
3923 })
3924 .unwrap();
3925
3926 assert_eq!(state.selections.len(), 1);
3927 let local_selections = &state.selections[0].1;
3928 assert_eq!(local_selections.len(), 3);
3929 // moves cursor back one line
3930 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3931 assert_eq!(
3932 local_selections[0].range,
3933 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3934 );
3935
3936 // moves cursor back one column
3937 assert_eq!(
3938 local_selections[1].range,
3939 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3940 );
3941 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3942
3943 // leaves cursor on the max point
3944 assert_eq!(
3945 local_selections[2].range,
3946 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3947 );
3948 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3949
3950 // active lines does not include 1 (even though the range of the selection does)
3951 assert_eq!(
3952 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3953 vec![0, 3, 5, 6]
3954 );
3955
3956 // multi-buffer support
3957 // in DisplayPoint coordinates, this is what we're dealing with:
3958 // 0: [[file
3959 // 1: header]]
3960 // 2: aaaaaa
3961 // 3: bbbbbb
3962 // 4: cccccc
3963 // 5:
3964 // 6: ...
3965 // 7: ffffff
3966 // 8: gggggg
3967 // 9: hhhhhh
3968 // 10:
3969 // 11: [[file
3970 // 12: header]]
3971 // 13: bbbbbb
3972 // 14: cccccc
3973 // 15: dddddd
3974 let window = cx.add_window(|cx| {
3975 let buffer = MultiBuffer::build_multi(
3976 [
3977 (
3978 &(sample_text(8, 6, 'a') + "\n"),
3979 vec![
3980 Point::new(0, 0)..Point::new(3, 0),
3981 Point::new(4, 0)..Point::new(7, 0),
3982 ],
3983 ),
3984 (
3985 &(sample_text(8, 6, 'a') + "\n"),
3986 vec![Point::new(1, 0)..Point::new(3, 0)],
3987 ),
3988 ],
3989 cx,
3990 );
3991 Editor::new(EditorMode::Full, buffer, None, cx)
3992 });
3993 let editor = window.root(cx).unwrap();
3994 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3995 let mut element = EditorElement::new(&editor, style);
3996 let _state = window.update(cx, |editor, cx| {
3997 editor.cursor_shape = CursorShape::Block;
3998 editor.change_selections(None, cx, |s| {
3999 s.select_display_ranges([
4000 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
4001 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
4002 ]);
4003 });
4004 });
4005
4006 let state = cx
4007 .update_window(window.into(), |_view, cx| {
4008 cx.with_element_context(|cx| {
4009 element.after_layout(
4010 Bounds {
4011 origin: point(px(500.), px(500.)),
4012 size: size(px(500.), px(500.)),
4013 },
4014 &mut (),
4015 cx,
4016 )
4017 })
4018 })
4019 .unwrap();
4020 assert_eq!(state.selections.len(), 1);
4021 let local_selections = &state.selections[0].1;
4022 assert_eq!(local_selections.len(), 2);
4023
4024 // moves cursor on excerpt boundary back a line
4025 // and doesn't allow selection to bleed through
4026 assert_eq!(
4027 local_selections[0].range,
4028 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
4029 );
4030 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
4031 // moves cursor on buffer boundary back two lines
4032 // and doesn't allow selection to bleed through
4033 assert_eq!(
4034 local_selections[1].range,
4035 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
4036 );
4037 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
4038 }
4039
4040 #[gpui::test]
4041 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
4042 init_test(cx, |_| {});
4043
4044 let window = cx.add_window(|cx| {
4045 let buffer = MultiBuffer::build_simple("", cx);
4046 Editor::new(EditorMode::Full, buffer, None, cx)
4047 });
4048 let editor = window.root(cx).unwrap();
4049 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4050 window
4051 .update(cx, |editor, cx| {
4052 editor.set_placeholder_text("hello", cx);
4053 editor.insert_blocks(
4054 [BlockProperties {
4055 style: BlockStyle::Fixed,
4056 disposition: BlockDisposition::Above,
4057 height: 3,
4058 position: Anchor::min(),
4059 render: Arc::new(|_| div().into_any()),
4060 }],
4061 None,
4062 cx,
4063 );
4064
4065 // Blur the editor so that it displays placeholder text.
4066 cx.blur();
4067 })
4068 .unwrap();
4069
4070 let mut element = EditorElement::new(&editor, style);
4071 let state = cx
4072 .update_window(window.into(), |_view, cx| {
4073 cx.with_element_context(|cx| {
4074 element.after_layout(
4075 Bounds {
4076 origin: point(px(500.), px(500.)),
4077 size: size(px(500.), px(500.)),
4078 },
4079 &mut (),
4080 cx,
4081 )
4082 })
4083 })
4084 .unwrap();
4085
4086 assert_eq!(state.position_map.line_layouts.len(), 4);
4087 assert_eq!(
4088 state
4089 .line_numbers
4090 .iter()
4091 .map(Option::is_some)
4092 .collect::<Vec<_>>(),
4093 &[false, false, false, true]
4094 );
4095 }
4096
4097 #[gpui::test]
4098 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
4099 const TAB_SIZE: u32 = 4;
4100
4101 let input_text = "\t \t|\t| a b";
4102 let expected_invisibles = vec![
4103 Invisible::Tab {
4104 line_start_offset: 0,
4105 },
4106 Invisible::Whitespace {
4107 line_offset: TAB_SIZE as usize,
4108 },
4109 Invisible::Tab {
4110 line_start_offset: TAB_SIZE as usize + 1,
4111 },
4112 Invisible::Tab {
4113 line_start_offset: TAB_SIZE as usize * 2 + 1,
4114 },
4115 Invisible::Whitespace {
4116 line_offset: TAB_SIZE as usize * 3 + 1,
4117 },
4118 Invisible::Whitespace {
4119 line_offset: TAB_SIZE as usize * 3 + 3,
4120 },
4121 ];
4122 assert_eq!(
4123 expected_invisibles.len(),
4124 input_text
4125 .chars()
4126 .filter(|initial_char| initial_char.is_whitespace())
4127 .count(),
4128 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4129 );
4130
4131 init_test(cx, |s| {
4132 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4133 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
4134 });
4135
4136 let actual_invisibles =
4137 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
4138
4139 assert_eq!(expected_invisibles, actual_invisibles);
4140 }
4141
4142 #[gpui::test]
4143 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
4144 init_test(cx, |s| {
4145 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4146 s.defaults.tab_size = NonZeroU32::new(4);
4147 });
4148
4149 for editor_mode_without_invisibles in [
4150 EditorMode::SingleLine,
4151 EditorMode::AutoHeight { max_lines: 100 },
4152 ] {
4153 let invisibles = collect_invisibles_from_new_editor(
4154 cx,
4155 editor_mode_without_invisibles,
4156 "\t\t\t| | a b",
4157 px(500.0),
4158 );
4159 assert!(invisibles.is_empty(),
4160 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4161 }
4162 }
4163
4164 #[gpui::test]
4165 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4166 let tab_size = 4;
4167 let input_text = "a\tbcd ".repeat(9);
4168 let repeated_invisibles = [
4169 Invisible::Tab {
4170 line_start_offset: 1,
4171 },
4172 Invisible::Whitespace {
4173 line_offset: tab_size as usize + 3,
4174 },
4175 Invisible::Whitespace {
4176 line_offset: tab_size as usize + 4,
4177 },
4178 Invisible::Whitespace {
4179 line_offset: tab_size as usize + 5,
4180 },
4181 ];
4182 let expected_invisibles = std::iter::once(repeated_invisibles)
4183 .cycle()
4184 .take(9)
4185 .flatten()
4186 .collect::<Vec<_>>();
4187 assert_eq!(
4188 expected_invisibles.len(),
4189 input_text
4190 .chars()
4191 .filter(|initial_char| initial_char.is_whitespace())
4192 .count(),
4193 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4194 );
4195 info!("Expected invisibles: {expected_invisibles:?}");
4196
4197 init_test(cx, |_| {});
4198
4199 // Put the same string with repeating whitespace pattern into editors of various size,
4200 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4201 let resize_step = 10.0;
4202 let mut editor_width = 200.0;
4203 while editor_width <= 1000.0 {
4204 update_test_language_settings(cx, |s| {
4205 s.defaults.tab_size = NonZeroU32::new(tab_size);
4206 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4207 s.defaults.preferred_line_length = Some(editor_width as u32);
4208 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4209 });
4210
4211 let actual_invisibles = collect_invisibles_from_new_editor(
4212 cx,
4213 EditorMode::Full,
4214 &input_text,
4215 px(editor_width),
4216 );
4217
4218 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4219 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4220 let mut i = 0;
4221 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4222 i = actual_index;
4223 match expected_invisibles.get(i) {
4224 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4225 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4226 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4227 _ => {
4228 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4229 }
4230 },
4231 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4232 }
4233 }
4234 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4235 assert!(
4236 missing_expected_invisibles.is_empty(),
4237 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4238 );
4239
4240 editor_width += resize_step;
4241 }
4242 }
4243
4244 fn collect_invisibles_from_new_editor(
4245 cx: &mut TestAppContext,
4246 editor_mode: EditorMode,
4247 input_text: &str,
4248 editor_width: Pixels,
4249 ) -> Vec<Invisible> {
4250 info!(
4251 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4252 editor_width.0
4253 );
4254 let window = cx.add_window(|cx| {
4255 let buffer = MultiBuffer::build_simple(&input_text, cx);
4256 Editor::new(editor_mode, buffer, None, cx)
4257 });
4258 let editor = window.root(cx).unwrap();
4259 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4260 let mut element = EditorElement::new(&editor, style);
4261 window
4262 .update(cx, |editor, cx| {
4263 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4264 editor.set_wrap_width(Some(editor_width), cx);
4265 })
4266 .unwrap();
4267 let layout_state = cx
4268 .update_window(window.into(), |_, cx| {
4269 cx.with_element_context(|cx| {
4270 element.after_layout(
4271 Bounds {
4272 origin: point(px(500.), px(500.)),
4273 size: size(px(500.), px(500.)),
4274 },
4275 &mut (),
4276 cx,
4277 )
4278 })
4279 })
4280 .unwrap();
4281
4282 layout_state
4283 .position_map
4284 .line_layouts
4285 .iter()
4286 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
4287 .cloned()
4288 .collect()
4289 }
4290}
4291
4292pub fn register_action<T: Action>(
4293 view: &View<Editor>,
4294 cx: &mut WindowContext,
4295 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4296) {
4297 let view = view.clone();
4298 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4299 let action = action.downcast_ref().unwrap();
4300 if phase == DispatchPhase::Bubble {
4301 view.update(cx, |editor, cx| {
4302 listener(editor, action, cx);
4303 })
4304 }
4305 })
4306}
4307
4308fn compute_auto_height_layout(
4309 editor: &mut Editor,
4310 max_lines: usize,
4311 max_line_number_width: Pixels,
4312 known_dimensions: Size<Option<Pixels>>,
4313 cx: &mut ViewContext<Editor>,
4314) -> Option<Size<Pixels>> {
4315 let width = known_dimensions.width?;
4316 if let Some(height) = known_dimensions.height {
4317 return Some(size(width, height));
4318 }
4319
4320 let style = editor.style.as_ref().unwrap();
4321 let font_id = cx.text_system().resolve_font(&style.text.font());
4322 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4323 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4324 let em_width = cx
4325 .text_system()
4326 .typographic_bounds(font_id, font_size, 'm')
4327 .unwrap()
4328 .size
4329 .width;
4330
4331 let mut snapshot = editor.snapshot(cx);
4332 let gutter_dimensions =
4333 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4334
4335 editor.gutter_width = gutter_dimensions.width;
4336 let text_width = width - gutter_dimensions.width;
4337 let overscroll = size(em_width, px(0.));
4338
4339 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4340 if editor.set_wrap_width(Some(editor_width), cx) {
4341 snapshot = editor.snapshot(cx);
4342 }
4343
4344 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4345 let height = scroll_height
4346 .max(line_height)
4347 .min(line_height * max_lines as f32);
4348
4349 Some(size(width, height))
4350}