1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::{DoubleClickInMultibuffer, 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, a, cx| {
262 editor.go_to_definition(a, cx).detach_and_log_err(cx);
263 });
264 register_action(view, cx, |editor, a, cx| {
265 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
266 });
267 register_action(view, cx, |editor, a, cx| {
268 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
269 });
270 register_action(view, cx, |editor, a, cx| {
271 editor
272 .go_to_implementation_split(a, cx)
273 .detach_and_log_err(cx);
274 });
275 register_action(view, cx, |editor, a, cx| {
276 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
277 });
278 register_action(view, cx, |editor, a, cx| {
279 editor
280 .go_to_type_definition_split(a, cx)
281 .detach_and_log_err(cx);
282 });
283 register_action(view, cx, Editor::open_url);
284 register_action(view, cx, Editor::fold);
285 register_action(view, cx, Editor::fold_at);
286 register_action(view, cx, Editor::unfold_lines);
287 register_action(view, cx, Editor::unfold_at);
288 register_action(view, cx, Editor::fold_selected_ranges);
289 register_action(view, cx, Editor::show_completions);
290 register_action(view, cx, Editor::toggle_code_actions);
291 register_action(view, cx, Editor::open_excerpts);
292 register_action(view, cx, Editor::open_excerpts_in_split);
293 register_action(view, cx, Editor::toggle_soft_wrap);
294 register_action(view, cx, Editor::toggle_line_numbers);
295 register_action(view, cx, Editor::toggle_inlay_hints);
296 register_action(view, cx, hover_popover::hover);
297 register_action(view, cx, Editor::reveal_in_finder);
298 register_action(view, cx, Editor::copy_path);
299 register_action(view, cx, Editor::copy_relative_path);
300 register_action(view, cx, Editor::copy_highlight_json);
301 register_action(view, cx, Editor::copy_permalink_to_line);
302 register_action(view, cx, Editor::open_permalink_to_line);
303 register_action(view, cx, |editor, action, cx| {
304 if let Some(task) = editor.format(action, cx) {
305 task.detach_and_log_err(cx);
306 } else {
307 cx.propagate();
308 }
309 });
310 register_action(view, cx, Editor::restart_language_server);
311 register_action(view, cx, Editor::show_character_palette);
312 register_action(view, cx, |editor, action, cx| {
313 if let Some(task) = editor.confirm_completion(action, cx) {
314 task.detach_and_log_err(cx);
315 } else {
316 cx.propagate();
317 }
318 });
319 register_action(view, cx, |editor, action, cx| {
320 if let Some(task) = editor.confirm_code_action(action, cx) {
321 task.detach_and_log_err(cx);
322 } else {
323 cx.propagate();
324 }
325 });
326 register_action(view, cx, |editor, action, cx| {
327 if let Some(task) = editor.rename(action, cx) {
328 task.detach_and_log_err(cx);
329 } else {
330 cx.propagate();
331 }
332 });
333 register_action(view, cx, |editor, action, cx| {
334 if let Some(task) = editor.confirm_rename(action, cx) {
335 task.detach_and_log_err(cx);
336 } else {
337 cx.propagate();
338 }
339 });
340 register_action(view, cx, |editor, action, cx| {
341 if let Some(task) = editor.find_all_references(action, cx) {
342 task.detach_and_log_err(cx);
343 } else {
344 cx.propagate();
345 }
346 });
347 register_action(view, cx, Editor::next_copilot_suggestion);
348 register_action(view, cx, Editor::previous_copilot_suggestion);
349 register_action(view, cx, Editor::copilot_suggest);
350 register_action(view, cx, Editor::context_menu_first);
351 register_action(view, cx, Editor::context_menu_prev);
352 register_action(view, cx, Editor::context_menu_next);
353 register_action(view, cx, Editor::context_menu_last);
354 register_action(view, cx, Editor::display_cursor_names);
355 register_action(view, cx, Editor::unique_lines_case_insensitive);
356 register_action(view, cx, Editor::unique_lines_case_sensitive);
357 register_action(view, cx, Editor::accept_partial_copilot_suggestion);
358 register_action(view, cx, Editor::revert_selected_hunks);
359 }
360
361 fn register_key_listeners(&self, cx: &mut ElementContext, layout: &EditorLayout) {
362 let position_map = layout.position_map.clone();
363 cx.on_key_event({
364 let editor = self.editor.clone();
365 let text_hitbox = layout.text_hitbox.clone();
366 move |event: &ModifiersChangedEvent, phase, cx| {
367 if phase != DispatchPhase::Bubble {
368 return;
369 }
370
371 editor.update(cx, |editor, cx| {
372 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
373 })
374 }
375 });
376 }
377
378 fn modifiers_changed(
379 editor: &mut Editor,
380 event: &ModifiersChangedEvent,
381 position_map: &PositionMap,
382 text_hitbox: &Hitbox,
383 cx: &mut ViewContext<Editor>,
384 ) {
385 let mouse_position = cx.mouse_position();
386 if !text_hitbox.is_hovered(cx) {
387 return;
388 }
389
390 editor.update_hovered_link(
391 position_map.point_for_position(text_hitbox.bounds, mouse_position),
392 &position_map.snapshot,
393 event.modifiers,
394 cx,
395 )
396 }
397
398 fn mouse_left_down(
399 editor: &mut Editor,
400 event: &MouseDownEvent,
401 position_map: &PositionMap,
402 text_hitbox: &Hitbox,
403 gutter_hitbox: &Hitbox,
404 cx: &mut ViewContext<Editor>,
405 ) {
406 if cx.default_prevented() {
407 return;
408 }
409
410 let mut click_count = event.click_count;
411 let mut modifiers = event.modifiers;
412
413 if gutter_hitbox.is_hovered(cx) {
414 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
415 } else if !text_hitbox.is_hovered(cx) {
416 return;
417 }
418
419 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
420 match EditorSettings::get_global(cx).double_click_in_multibuffer {
421 DoubleClickInMultibuffer::Select => {
422 // do nothing special on double click, all selection logic is below
423 }
424 DoubleClickInMultibuffer::Open => {
425 if modifiers.alt {
426 // if double click is made with alt, pretend it's a regular double click without opening and alt,
427 // and run the selection logic.
428 modifiers.alt = false;
429 } else {
430 // if double click is made without alt, open the corresponding excerp
431 editor.open_excerpts(&OpenExcerpts, cx);
432 return;
433 }
434 }
435 }
436 }
437
438 let point_for_position =
439 position_map.point_for_position(text_hitbox.bounds, event.position);
440 let position = point_for_position.previous_valid;
441 if modifiers.shift && modifiers.alt {
442 editor.select(
443 SelectPhase::BeginColumnar {
444 position,
445 goal_column: point_for_position.exact_unclipped.column(),
446 },
447 cx,
448 );
449 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
450 editor.select(
451 SelectPhase::Extend {
452 position,
453 click_count,
454 },
455 cx,
456 );
457 } else {
458 editor.select(
459 SelectPhase::Begin {
460 position,
461 add: modifiers.alt,
462 click_count,
463 },
464 cx,
465 );
466 }
467
468 cx.stop_propagation();
469 }
470
471 fn mouse_right_down(
472 editor: &mut Editor,
473 event: &MouseDownEvent,
474 position_map: &PositionMap,
475 text_hitbox: &Hitbox,
476 cx: &mut ViewContext<Editor>,
477 ) {
478 if !text_hitbox.is_hovered(cx) {
479 return;
480 }
481 let point_for_position =
482 position_map.point_for_position(text_hitbox.bounds, event.position);
483 mouse_context_menu::deploy_context_menu(
484 editor,
485 event.position,
486 point_for_position.previous_valid,
487 cx,
488 );
489 cx.stop_propagation();
490 }
491
492 fn mouse_up(
493 editor: &mut Editor,
494 event: &MouseUpEvent,
495 position_map: &PositionMap,
496 text_hitbox: &Hitbox,
497 cx: &mut ViewContext<Editor>,
498 ) {
499 let end_selection = editor.has_pending_selection();
500 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
501
502 if end_selection {
503 editor.select(SelectPhase::End, cx);
504 }
505
506 if !pending_nonempty_selections && event.modifiers.command && text_hitbox.is_hovered(cx) {
507 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
508 editor.handle_click_hovered_link(point, event.modifiers, cx);
509
510 cx.stop_propagation();
511 } else if end_selection {
512 cx.stop_propagation();
513 }
514 }
515
516 fn mouse_dragged(
517 editor: &mut Editor,
518 event: &MouseMoveEvent,
519 position_map: &PositionMap,
520 text_bounds: Bounds<Pixels>,
521 cx: &mut ViewContext<Editor>,
522 ) {
523 if !editor.has_pending_selection() {
524 return;
525 }
526
527 let point_for_position = position_map.point_for_position(text_bounds, event.position);
528 let mut scroll_delta = gpui::Point::<f32>::default();
529 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
530 let top = text_bounds.origin.y + vertical_margin;
531 let bottom = text_bounds.lower_left().y - vertical_margin;
532 if event.position.y < top {
533 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
534 }
535 if event.position.y > bottom {
536 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
537 }
538
539 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
540 let left = text_bounds.origin.x + horizontal_margin;
541 let right = text_bounds.upper_right().x - horizontal_margin;
542 if event.position.x < left {
543 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
544 }
545 if event.position.x > right {
546 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
547 }
548
549 editor.select(
550 SelectPhase::Update {
551 position: point_for_position.previous_valid,
552 goal_column: point_for_position.exact_unclipped.column(),
553 scroll_delta,
554 },
555 cx,
556 );
557 }
558
559 fn mouse_moved(
560 editor: &mut Editor,
561 event: &MouseMoveEvent,
562 position_map: &PositionMap,
563 text_hitbox: &Hitbox,
564 gutter_hitbox: &Hitbox,
565 cx: &mut ViewContext<Editor>,
566 ) {
567 let modifiers = event.modifiers;
568 let gutter_hovered = gutter_hitbox.is_hovered(cx);
569 editor.set_gutter_hovered(gutter_hovered, cx);
570
571 // Don't trigger hover popover if mouse is hovering over context menu
572 if text_hitbox.is_hovered(cx) {
573 let point_for_position =
574 position_map.point_for_position(text_hitbox.bounds, event.position);
575
576 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
577
578 if let Some(point) = point_for_position.as_valid() {
579 hover_at(editor, Some(point), cx);
580 Self::update_visible_cursor(editor, point, position_map, cx);
581 } else {
582 hover_at(editor, None, cx);
583 }
584 } else {
585 editor.hide_hovered_link(cx);
586 hover_at(editor, None, cx);
587 if gutter_hovered {
588 cx.stop_propagation();
589 }
590 }
591 }
592
593 fn update_visible_cursor(
594 editor: &mut Editor,
595 point: DisplayPoint,
596 position_map: &PositionMap,
597 cx: &mut ViewContext<Editor>,
598 ) {
599 let snapshot = &position_map.snapshot;
600 let Some(hub) = editor.collaboration_hub() else {
601 return;
602 };
603 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
604 ..DisplayPoint::new(
605 point.row(),
606 (point.column() + 1).min(snapshot.line_len(point.row())),
607 );
608
609 let range = snapshot
610 .buffer_snapshot
611 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
612 ..snapshot
613 .buffer_snapshot
614 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
615
616 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
617 return;
618 };
619 let key = crate::HoveredCursor {
620 replica_id: selection.replica_id,
621 selection_id: selection.selection.id,
622 };
623 editor.hovered_cursors.insert(
624 key.clone(),
625 cx.spawn(|editor, mut cx| async move {
626 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
627 editor
628 .update(&mut cx, |editor, cx| {
629 editor.hovered_cursors.remove(&key);
630 cx.notify();
631 })
632 .ok();
633 }),
634 );
635 cx.notify()
636 }
637
638 fn layout_selections(
639 &self,
640 start_anchor: Anchor,
641 end_anchor: Anchor,
642 snapshot: &EditorSnapshot,
643 start_row: u32,
644 end_row: u32,
645 cx: &mut ElementContext,
646 ) -> (
647 Vec<(PlayerColor, Vec<SelectionLayout>)>,
648 BTreeMap<u32, bool>,
649 Option<DisplayPoint>,
650 ) {
651 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
652 let mut active_rows = BTreeMap::new();
653 let mut newest_selection_head = None;
654 let editor = self.editor.read(cx);
655
656 if editor.show_local_selections {
657 let mut local_selections: Vec<Selection<Point>> = editor
658 .selections
659 .disjoint_in_range(start_anchor..end_anchor, cx);
660 local_selections.extend(editor.selections.pending(cx));
661 let mut layouts = Vec::new();
662 let newest = editor.selections.newest(cx);
663 for selection in local_selections.drain(..) {
664 let is_empty = selection.start == selection.end;
665 let is_newest = selection == newest;
666
667 let layout = SelectionLayout::new(
668 selection,
669 editor.selections.line_mode,
670 editor.cursor_shape,
671 &snapshot.display_snapshot,
672 is_newest,
673 editor.leader_peer_id.is_none(),
674 None,
675 );
676 if is_newest {
677 newest_selection_head = Some(layout.head);
678 }
679
680 for row in cmp::max(layout.active_rows.start, start_row)
681 ..=cmp::min(layout.active_rows.end, end_row)
682 {
683 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
684 *contains_non_empty_selection |= !is_empty;
685 }
686 layouts.push(layout);
687 }
688
689 let player = if editor.read_only(cx) {
690 cx.theme().players().read_only()
691 } else {
692 self.style.local_player
693 };
694
695 selections.push((player, layouts));
696 }
697
698 if let Some(collaboration_hub) = &editor.collaboration_hub {
699 // When following someone, render the local selections in their color.
700 if let Some(leader_id) = editor.leader_peer_id {
701 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
702 if let Some(participant_index) = collaboration_hub
703 .user_participant_indices(cx)
704 .get(&collaborator.user_id)
705 {
706 if let Some((local_selection_style, _)) = selections.first_mut() {
707 *local_selection_style = cx
708 .theme()
709 .players()
710 .color_for_participant(participant_index.0);
711 }
712 }
713 }
714 }
715
716 let mut remote_selections = HashMap::default();
717 for selection in snapshot.remote_selections_in_range(
718 &(start_anchor..end_anchor),
719 collaboration_hub.as_ref(),
720 cx,
721 ) {
722 let selection_style = if let Some(participant_index) = selection.participant_index {
723 cx.theme()
724 .players()
725 .color_for_participant(participant_index.0)
726 } else {
727 cx.theme().players().absent()
728 };
729
730 // Don't re-render the leader's selections, since the local selections
731 // match theirs.
732 if Some(selection.peer_id) == editor.leader_peer_id {
733 continue;
734 }
735 let key = HoveredCursor {
736 replica_id: selection.replica_id,
737 selection_id: selection.selection.id,
738 };
739
740 let is_shown =
741 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
742
743 remote_selections
744 .entry(selection.replica_id)
745 .or_insert((selection_style, Vec::new()))
746 .1
747 .push(SelectionLayout::new(
748 selection.selection,
749 selection.line_mode,
750 selection.cursor_shape,
751 &snapshot.display_snapshot,
752 false,
753 false,
754 if is_shown { selection.user_name } else { None },
755 ));
756 }
757
758 selections.extend(remote_selections.into_values());
759 }
760 (selections, active_rows, newest_selection_head)
761 }
762
763 #[allow(clippy::too_many_arguments)]
764 fn layout_folds(
765 &self,
766 snapshot: &EditorSnapshot,
767 content_origin: gpui::Point<Pixels>,
768 visible_anchor_range: Range<Anchor>,
769 visible_display_row_range: Range<u32>,
770 scroll_pixel_position: gpui::Point<Pixels>,
771 line_height: Pixels,
772 line_layouts: &[LineWithInvisibles],
773 cx: &mut ElementContext,
774 ) -> Vec<FoldLayout> {
775 snapshot
776 .folds_in_range(visible_anchor_range.clone())
777 .filter_map(|fold| {
778 let fold_range = fold.range.clone();
779 let display_range = fold.range.start.to_display_point(&snapshot)
780 ..fold.range.end.to_display_point(&snapshot);
781 debug_assert_eq!(display_range.start.row(), display_range.end.row());
782 let row = display_range.start.row();
783 debug_assert!(row < visible_display_row_range.end);
784 let line_layout = line_layouts
785 .get((row - visible_display_row_range.start) as usize)
786 .map(|l| &l.line)?;
787
788 let start_x = content_origin.x
789 + line_layout.x_for_index(display_range.start.column() as usize)
790 - scroll_pixel_position.x;
791 let start_y = content_origin.y + row as f32 * line_height - scroll_pixel_position.y;
792 let end_x = content_origin.x
793 + line_layout.x_for_index(display_range.end.column() as usize)
794 - scroll_pixel_position.x;
795
796 let fold_bounds = Bounds {
797 origin: point(start_x, start_y),
798 size: size(end_x - start_x, line_height),
799 };
800
801 let mut hover_element = div()
802 .id(fold.id)
803 .size_full()
804 .cursor_pointer()
805 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
806 .on_click(
807 cx.listener_for(&self.editor, move |editor: &mut Editor, _, cx| {
808 editor.unfold_ranges(
809 [fold_range.start..fold_range.end],
810 true,
811 false,
812 cx,
813 );
814 cx.stop_propagation();
815 }),
816 )
817 .into_any();
818 hover_element.layout(fold_bounds.origin, fold_bounds.size.into(), cx);
819 Some(FoldLayout {
820 display_range,
821 hover_element,
822 })
823 })
824 .collect()
825 }
826
827 #[allow(clippy::too_many_arguments)]
828 fn layout_cursors(
829 &self,
830 snapshot: &EditorSnapshot,
831 selections: &[(PlayerColor, Vec<SelectionLayout>)],
832 visible_display_row_range: Range<u32>,
833 line_layouts: &[LineWithInvisibles],
834 text_hitbox: &Hitbox,
835 content_origin: gpui::Point<Pixels>,
836 scroll_pixel_position: gpui::Point<Pixels>,
837 line_height: Pixels,
838 em_width: Pixels,
839 cx: &mut ElementContext,
840 ) -> Vec<CursorLayout> {
841 self.editor.update(cx, |editor, cx| {
842 let mut cursors = Vec::new();
843 for (player_color, selections) in selections {
844 for selection in selections {
845 let cursor_position = selection.head;
846 if (selection.is_local && !editor.show_local_cursors(cx))
847 || !visible_display_row_range.contains(&cursor_position.row())
848 {
849 continue;
850 }
851
852 let cursor_row_layout = &line_layouts
853 [(cursor_position.row() - visible_display_row_range.start) as usize]
854 .line;
855 let cursor_column = cursor_position.column() as usize;
856
857 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
858 let mut block_width =
859 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
860 if block_width == Pixels::ZERO {
861 block_width = em_width;
862 }
863 let block_text = if let CursorShape::Block = selection.cursor_shape {
864 snapshot
865 .chars_at(cursor_position)
866 .next()
867 .and_then(|(character, _)| {
868 let text = if character == '\n' {
869 SharedString::from(" ")
870 } else {
871 SharedString::from(character.to_string())
872 };
873 let len = text.len();
874 cx.text_system()
875 .shape_line(
876 text,
877 cursor_row_layout.font_size,
878 &[TextRun {
879 len,
880 font: self.style.text.font(),
881 color: self.style.background,
882 background_color: None,
883 strikethrough: None,
884 underline: None,
885 }],
886 )
887 .log_err()
888 })
889 } else {
890 None
891 };
892
893 let x = cursor_character_x - scroll_pixel_position.x;
894 let y = (cursor_position.row() as f32 - scroll_pixel_position.y / line_height)
895 * line_height;
896 if selection.is_newest {
897 editor.pixel_position_of_newest_cursor = Some(point(
898 text_hitbox.origin.x + x + block_width / 2.,
899 text_hitbox.origin.y + y + line_height / 2.,
900 ))
901 }
902
903 let mut cursor = CursorLayout {
904 color: player_color.cursor,
905 block_width,
906 origin: point(x, y),
907 line_height,
908 shape: selection.cursor_shape,
909 block_text,
910 cursor_name: None,
911 };
912 let cursor_name = selection.user_name.clone().map(|name| CursorName {
913 string: name,
914 color: self.style.background,
915 is_top_row: cursor_position.row() == 0,
916 });
917 cx.with_element_context(|cx| cursor.layout(content_origin, cursor_name, cx));
918 cursors.push(cursor);
919 }
920 }
921 cursors
922 })
923 }
924
925 fn layout_scrollbar(
926 &self,
927 snapshot: &EditorSnapshot,
928 bounds: Bounds<Pixels>,
929 scroll_position: gpui::Point<f32>,
930 line_height: Pixels,
931 height_in_lines: f32,
932 cx: &mut ElementContext,
933 ) -> Option<ScrollbarLayout> {
934 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
935 let show_scrollbars = match scrollbar_settings.show {
936 ShowScrollbar::Auto => {
937 let editor = self.editor.read(cx);
938 let is_singleton = editor.is_singleton(cx);
939 // Git
940 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
941 ||
942 // Selections
943 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
944 ||
945 // Symbols Selections
946 (is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
947 ||
948 // Diagnostics
949 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
950 ||
951 // Scrollmanager
952 editor.scroll_manager.scrollbars_visible()
953 }
954 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
955 ShowScrollbar::Always => true,
956 ShowScrollbar::Never => false,
957 };
958 if snapshot.mode != EditorMode::Full {
959 return None;
960 }
961
962 let visible_row_range = scroll_position.y..scroll_position.y + height_in_lines;
963
964 // If a drag took place after we started dragging the scrollbar,
965 // cancel the scrollbar drag.
966 if cx.has_active_drag() {
967 self.editor.update(cx, |editor, cx| {
968 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
969 });
970 }
971
972 let track_bounds = Bounds::from_corners(
973 point(self.scrollbar_left(&bounds), bounds.origin.y),
974 point(bounds.lower_right().x, bounds.lower_left().y),
975 );
976
977 let scroll_height = snapshot.max_point().row() as f32 + height_in_lines;
978 let mut height = bounds.size.height;
979 let mut first_row_y_offset = px(0.0);
980
981 // Impose a minimum height on the scrollbar thumb
982 let row_height = height / scroll_height;
983 let min_thumb_height = line_height;
984 let thumb_height = height_in_lines * row_height;
985 if thumb_height < min_thumb_height {
986 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
987 height -= min_thumb_height - thumb_height;
988 }
989
990 Some(ScrollbarLayout {
991 hitbox: cx.insert_hitbox(track_bounds, false),
992 visible_row_range,
993 height,
994 scroll_height,
995 first_row_y_offset,
996 row_height,
997 visible: show_scrollbars,
998 })
999 }
1000
1001 #[allow(clippy::too_many_arguments)]
1002 fn layout_gutter_fold_indicators(
1003 &self,
1004 fold_statuses: Vec<Option<(FoldStatus, u32, bool)>>,
1005 line_height: Pixels,
1006 gutter_dimensions: &GutterDimensions,
1007 gutter_settings: crate::editor_settings::Gutter,
1008 scroll_pixel_position: gpui::Point<Pixels>,
1009 gutter_hitbox: &Hitbox,
1010 cx: &mut ElementContext,
1011 ) -> Vec<Option<AnyElement>> {
1012 let mut indicators = self.editor.update(cx, |editor, cx| {
1013 editor.render_fold_indicators(
1014 fold_statuses,
1015 &self.style,
1016 editor.gutter_hovered,
1017 line_height,
1018 gutter_dimensions.margin,
1019 cx,
1020 )
1021 });
1022
1023 for (ix, fold_indicator) in indicators.iter_mut().enumerate() {
1024 if let Some(fold_indicator) = fold_indicator {
1025 debug_assert!(gutter_settings.folds);
1026 let available_space = size(
1027 AvailableSpace::MinContent,
1028 AvailableSpace::Definite(line_height * 0.55),
1029 );
1030 let fold_indicator_size = fold_indicator.measure(available_space, cx);
1031
1032 let position = point(
1033 gutter_dimensions.width - gutter_dimensions.right_padding,
1034 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1035 );
1036 let centering_offset = point(
1037 (gutter_dimensions.right_padding + gutter_dimensions.margin
1038 - fold_indicator_size.width)
1039 / 2.,
1040 (line_height - fold_indicator_size.height) / 2.,
1041 );
1042 let origin = gutter_hitbox.origin + position + centering_offset;
1043 fold_indicator.layout(origin, available_space, cx);
1044 }
1045 }
1046
1047 indicators
1048 }
1049
1050 //Folds contained in a hunk are ignored apart from shrinking visual size
1051 //If a fold contains any hunks then that fold line is marked as modified
1052 fn layout_git_gutters(
1053 &self,
1054 display_rows: Range<u32>,
1055 snapshot: &EditorSnapshot,
1056 ) -> Vec<DisplayDiffHunk> {
1057 let buffer_snapshot = &snapshot.buffer_snapshot;
1058
1059 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1060 .to_point(snapshot)
1061 .row;
1062 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1063 .to_point(snapshot)
1064 .row;
1065
1066 buffer_snapshot
1067 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1068 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1069 .dedup()
1070 .collect()
1071 }
1072
1073 fn layout_code_actions_indicator(
1074 &self,
1075 line_height: Pixels,
1076 newest_selection_head: DisplayPoint,
1077 scroll_pixel_position: gpui::Point<Pixels>,
1078 gutter_dimensions: &GutterDimensions,
1079 gutter_hitbox: &Hitbox,
1080 cx: &mut ElementContext,
1081 ) -> Option<AnyElement> {
1082 let mut active = false;
1083 let mut button = None;
1084 self.editor.update(cx, |editor, cx| {
1085 active = matches!(
1086 editor.context_menu.read().as_ref(),
1087 Some(crate::ContextMenu::CodeActions(_))
1088 );
1089 button = editor.render_code_actions_indicator(&self.style, active, cx);
1090 });
1091
1092 let mut button = button?.into_any_element();
1093 let available_space = size(
1094 AvailableSpace::MinContent,
1095 AvailableSpace::Definite(line_height),
1096 );
1097 let indicator_size = button.measure(available_space, cx);
1098
1099 let mut x = Pixels::ZERO;
1100 let mut y = newest_selection_head.row() as f32 * line_height - scroll_pixel_position.y;
1101 // Center indicator.
1102 x +=
1103 (gutter_dimensions.margin + gutter_dimensions.left_padding - indicator_size.width) / 2.;
1104 y += (line_height - indicator_size.height) / 2.;
1105 button.layout(gutter_hitbox.origin + point(x, y), available_space, cx);
1106 Some(button)
1107 }
1108
1109 fn calculate_relative_line_numbers(
1110 &self,
1111 snapshot: &EditorSnapshot,
1112 rows: &Range<u32>,
1113 relative_to: Option<u32>,
1114 ) -> HashMap<u32, u32> {
1115 let mut relative_rows: HashMap<u32, u32> = Default::default();
1116 let Some(relative_to) = relative_to else {
1117 return relative_rows;
1118 };
1119
1120 let start = rows.start.min(relative_to);
1121 let end = rows.end.max(relative_to);
1122
1123 let buffer_rows = snapshot
1124 .buffer_rows(start)
1125 .take(1 + (end - start) as usize)
1126 .collect::<Vec<_>>();
1127
1128 let head_idx = relative_to - start;
1129 let mut delta = 1;
1130 let mut i = head_idx + 1;
1131 while i < buffer_rows.len() as u32 {
1132 if buffer_rows[i as usize].is_some() {
1133 if rows.contains(&(i + start)) {
1134 relative_rows.insert(i + start, delta);
1135 }
1136 delta += 1;
1137 }
1138 i += 1;
1139 }
1140 delta = 1;
1141 i = head_idx.min(buffer_rows.len() as u32 - 1);
1142 while i > 0 && buffer_rows[i as usize].is_none() {
1143 i -= 1;
1144 }
1145
1146 while i > 0 {
1147 i -= 1;
1148 if buffer_rows[i as usize].is_some() {
1149 if rows.contains(&(i + start)) {
1150 relative_rows.insert(i + start, delta);
1151 }
1152 delta += 1;
1153 }
1154 }
1155
1156 relative_rows
1157 }
1158
1159 fn layout_line_numbers(
1160 &self,
1161 rows: Range<u32>,
1162 active_rows: &BTreeMap<u32, bool>,
1163 newest_selection_head: Option<DisplayPoint>,
1164 snapshot: &EditorSnapshot,
1165 cx: &ElementContext,
1166 ) -> (
1167 Vec<Option<ShapedLine>>,
1168 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1169 ) {
1170 let editor = self.editor.read(cx);
1171 let is_singleton = editor.is_singleton(cx);
1172 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1173 let newest = editor.selections.newest::<Point>(cx);
1174 SelectionLayout::new(
1175 newest,
1176 editor.selections.line_mode,
1177 editor.cursor_shape,
1178 &snapshot.display_snapshot,
1179 true,
1180 true,
1181 None,
1182 )
1183 .head
1184 });
1185 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1186 let include_line_numbers =
1187 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full;
1188 let include_fold_statuses =
1189 EditorSettings::get_global(cx).gutter.folds && snapshot.mode == EditorMode::Full;
1190 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1191 let mut fold_statuses = Vec::with_capacity(rows.len());
1192 let mut line_number = String::new();
1193 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1194 let relative_to = if is_relative {
1195 Some(newest_selection_head.row())
1196 } else {
1197 None
1198 };
1199
1200 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1201
1202 for (ix, row) in snapshot
1203 .buffer_rows(rows.start)
1204 .take((rows.end - rows.start) as usize)
1205 .enumerate()
1206 {
1207 let display_row = rows.start + ix as u32;
1208 let (active, color) = if active_rows.contains_key(&display_row) {
1209 (true, cx.theme().colors().editor_active_line_number)
1210 } else {
1211 (false, cx.theme().colors().editor_line_number)
1212 };
1213 if let Some(buffer_row) = row {
1214 if include_line_numbers {
1215 line_number.clear();
1216 let default_number = buffer_row + 1;
1217 let number = relative_rows
1218 .get(&(ix as u32 + rows.start))
1219 .unwrap_or(&default_number);
1220 write!(&mut line_number, "{}", number).unwrap();
1221 let run = TextRun {
1222 len: line_number.len(),
1223 font: self.style.text.font(),
1224 color,
1225 background_color: None,
1226 underline: None,
1227 strikethrough: None,
1228 };
1229 let shaped_line = cx
1230 .text_system()
1231 .shape_line(line_number.clone().into(), font_size, &[run])
1232 .unwrap();
1233 shaped_line_numbers.push(Some(shaped_line));
1234 }
1235 if include_fold_statuses {
1236 fold_statuses.push(
1237 is_singleton
1238 .then(|| {
1239 snapshot
1240 .fold_for_line(buffer_row)
1241 .map(|fold_status| (fold_status, buffer_row, active))
1242 })
1243 .flatten(),
1244 )
1245 }
1246 } else {
1247 fold_statuses.push(None);
1248 shaped_line_numbers.push(None);
1249 }
1250 }
1251
1252 (shaped_line_numbers, fold_statuses)
1253 }
1254
1255 fn layout_lines(
1256 &self,
1257 rows: Range<u32>,
1258 line_number_layouts: &[Option<ShapedLine>],
1259 snapshot: &EditorSnapshot,
1260 cx: &ElementContext,
1261 ) -> Vec<LineWithInvisibles> {
1262 if rows.start >= rows.end {
1263 return Vec::new();
1264 }
1265
1266 // Show the placeholder when the editor is empty
1267 if snapshot.is_empty() {
1268 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1269 let placeholder_color = cx.theme().colors().text_placeholder;
1270 let placeholder_text = snapshot.placeholder_text();
1271
1272 let placeholder_lines = placeholder_text
1273 .as_ref()
1274 .map_or("", AsRef::as_ref)
1275 .split('\n')
1276 .skip(rows.start as usize)
1277 .chain(iter::repeat(""))
1278 .take(rows.len());
1279 placeholder_lines
1280 .filter_map(move |line| {
1281 let run = TextRun {
1282 len: line.len(),
1283 font: self.style.text.font(),
1284 color: placeholder_color,
1285 background_color: None,
1286 underline: Default::default(),
1287 strikethrough: None,
1288 };
1289 cx.text_system()
1290 .shape_line(line.to_string().into(), font_size, &[run])
1291 .log_err()
1292 })
1293 .map(|line| LineWithInvisibles {
1294 line,
1295 invisibles: Vec::new(),
1296 })
1297 .collect()
1298 } else {
1299 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1300 LineWithInvisibles::from_chunks(
1301 chunks,
1302 &self.style.text,
1303 MAX_LINE_LEN,
1304 rows.len(),
1305 line_number_layouts,
1306 snapshot.mode,
1307 cx,
1308 )
1309 }
1310 }
1311
1312 #[allow(clippy::too_many_arguments)]
1313 fn build_blocks(
1314 &self,
1315 rows: Range<u32>,
1316 snapshot: &EditorSnapshot,
1317 hitbox: &Hitbox,
1318 text_hitbox: &Hitbox,
1319 scroll_width: &mut Pixels,
1320 gutter_dimensions: &GutterDimensions,
1321 em_width: Pixels,
1322 text_x: Pixels,
1323 line_height: Pixels,
1324 line_layouts: &[LineWithInvisibles],
1325 cx: &mut ElementContext,
1326 ) -> Vec<BlockLayout> {
1327 let mut block_id = 0;
1328 let (fixed_blocks, non_fixed_blocks) = snapshot
1329 .blocks_in_range(rows.clone())
1330 .partition::<Vec<_>, _>(|(_, block)| match block {
1331 TransformBlock::ExcerptHeader { .. } => false,
1332 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1333 });
1334
1335 let render_block = |block: &TransformBlock,
1336 available_space: Size<AvailableSpace>,
1337 block_id: usize,
1338 cx: &mut ElementContext| {
1339 let mut element = match block {
1340 TransformBlock::Custom(block) => {
1341 let align_to = block
1342 .position()
1343 .to_point(&snapshot.buffer_snapshot)
1344 .to_display_point(snapshot);
1345 let anchor_x = text_x
1346 + if rows.contains(&align_to.row()) {
1347 line_layouts[(align_to.row() - rows.start) as usize]
1348 .line
1349 .x_for_index(align_to.column() as usize)
1350 } else {
1351 layout_line(align_to.row(), snapshot, &self.style, cx)
1352 .unwrap()
1353 .x_for_index(align_to.column() as usize)
1354 };
1355
1356 block.render(&mut BlockContext {
1357 context: cx,
1358 anchor_x,
1359 gutter_dimensions,
1360 line_height,
1361 em_width,
1362 block_id,
1363 max_width: text_hitbox.size.width.max(*scroll_width),
1364 editor_style: &self.style,
1365 })
1366 }
1367
1368 TransformBlock::ExcerptHeader {
1369 buffer,
1370 range,
1371 starts_new_buffer,
1372 ..
1373 } => {
1374 let include_root = self
1375 .editor
1376 .read(cx)
1377 .project
1378 .as_ref()
1379 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1380 .unwrap_or_default();
1381
1382 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
1383 let jump_path = ProjectPath {
1384 worktree_id: file.worktree_id(cx),
1385 path: file.path.clone(),
1386 };
1387 let jump_anchor = range
1388 .primary
1389 .as_ref()
1390 .map_or(range.context.start, |primary| primary.start);
1391 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
1392
1393 cx.listener_for(&self.editor, move |editor, _, cx| {
1394 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
1395 })
1396 });
1397
1398 let element = if *starts_new_buffer {
1399 let path = buffer.resolve_file_path(cx, include_root);
1400 let mut filename = None;
1401 let mut parent_path = None;
1402 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
1403 if let Some(path) = path {
1404 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
1405 parent_path = path
1406 .parent()
1407 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
1408 }
1409
1410 v_flex()
1411 .id(("path header container", block_id))
1412 .size_full()
1413 .justify_center()
1414 .p(gpui::px(6.))
1415 .child(
1416 h_flex()
1417 .id("path header block")
1418 .size_full()
1419 .pl(gpui::px(12.))
1420 .pr(gpui::px(8.))
1421 .rounded_md()
1422 .shadow_md()
1423 .border()
1424 .border_color(cx.theme().colors().border)
1425 .bg(cx.theme().colors().editor_subheader_background)
1426 .justify_between()
1427 .hover(|style| style.bg(cx.theme().colors().element_hover))
1428 .child(
1429 h_flex().gap_3().child(
1430 h_flex()
1431 .gap_2()
1432 .child(
1433 filename
1434 .map(SharedString::from)
1435 .unwrap_or_else(|| "untitled".into()),
1436 )
1437 .when_some(parent_path, |then, path| {
1438 then.child(
1439 div().child(path).text_color(
1440 cx.theme().colors().text_muted,
1441 ),
1442 )
1443 }),
1444 ),
1445 )
1446 .when_some(jump_handler, |this, jump_handler| {
1447 this.cursor_pointer()
1448 .tooltip(|cx| {
1449 Tooltip::for_action(
1450 "Jump to Buffer",
1451 &OpenExcerpts,
1452 cx,
1453 )
1454 })
1455 .on_mouse_down(MouseButton::Left, |_, cx| {
1456 cx.stop_propagation()
1457 })
1458 .on_click(jump_handler)
1459 }),
1460 )
1461 } else {
1462 h_flex()
1463 .id(("collapsed context", block_id))
1464 .size_full()
1465 .gap(gutter_dimensions.left_padding + gutter_dimensions.right_padding)
1466 .child(
1467 h_flex()
1468 .justify_end()
1469 .flex_none()
1470 .w(gutter_dimensions.width
1471 - (gutter_dimensions.left_padding
1472 + gutter_dimensions.right_padding))
1473 .h_full()
1474 .text_buffer(cx)
1475 .text_color(cx.theme().colors().editor_line_number)
1476 .child("..."),
1477 )
1478 .child(
1479 ButtonLike::new("jump to collapsed context")
1480 .style(ButtonStyle::Transparent)
1481 .full_width()
1482 .child(
1483 div()
1484 .h_px()
1485 .w_full()
1486 .bg(cx.theme().colors().border_variant)
1487 .group_hover("", |style| {
1488 style.bg(cx.theme().colors().border)
1489 }),
1490 )
1491 .when_some(jump_handler, |this, jump_handler| {
1492 this.on_click(jump_handler).tooltip(|cx| {
1493 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
1494 })
1495 }),
1496 )
1497 };
1498 element.into_any()
1499 }
1500 };
1501
1502 let size = element.measure(available_space, cx);
1503 (element, size)
1504 };
1505
1506 let mut fixed_block_max_width = Pixels::ZERO;
1507 let mut blocks = Vec::new();
1508 for (row, block) in fixed_blocks {
1509 let available_space = size(
1510 AvailableSpace::MinContent,
1511 AvailableSpace::Definite(block.height() as f32 * line_height),
1512 );
1513 let (element, element_size) = render_block(block, available_space, block_id, cx);
1514 block_id += 1;
1515 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
1516 blocks.push(BlockLayout {
1517 row,
1518 element,
1519 available_space,
1520 style: BlockStyle::Fixed,
1521 });
1522 }
1523 for (row, block) in non_fixed_blocks {
1524 let style = match block {
1525 TransformBlock::Custom(block) => block.style(),
1526 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
1527 };
1528 let width = match style {
1529 BlockStyle::Sticky => hitbox.size.width,
1530 BlockStyle::Flex => hitbox
1531 .size
1532 .width
1533 .max(fixed_block_max_width)
1534 .max(gutter_dimensions.width + *scroll_width),
1535 BlockStyle::Fixed => unreachable!(),
1536 };
1537 let available_space = size(
1538 AvailableSpace::Definite(width),
1539 AvailableSpace::Definite(block.height() as f32 * line_height),
1540 );
1541 let (element, _) = render_block(block, available_space, block_id, cx);
1542 block_id += 1;
1543 blocks.push(BlockLayout {
1544 row,
1545 element,
1546 available_space,
1547 style,
1548 });
1549 }
1550
1551 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
1552 blocks
1553 }
1554
1555 fn layout_blocks(
1556 &self,
1557 blocks: &mut Vec<BlockLayout>,
1558 hitbox: &Hitbox,
1559 line_height: Pixels,
1560 scroll_pixel_position: gpui::Point<Pixels>,
1561 cx: &mut ElementContext,
1562 ) {
1563 for block in blocks {
1564 let mut origin = hitbox.origin
1565 + point(
1566 Pixels::ZERO,
1567 block.row as f32 * line_height - scroll_pixel_position.y,
1568 );
1569 if !matches!(block.style, BlockStyle::Sticky) {
1570 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
1571 }
1572 block.element.layout(origin, block.available_space, cx);
1573 }
1574 }
1575
1576 #[allow(clippy::too_many_arguments)]
1577 fn layout_context_menu(
1578 &self,
1579 line_height: Pixels,
1580 hitbox: &Hitbox,
1581 text_hitbox: &Hitbox,
1582 content_origin: gpui::Point<Pixels>,
1583 start_row: u32,
1584 scroll_pixel_position: gpui::Point<Pixels>,
1585 line_layouts: &[LineWithInvisibles],
1586 newest_selection_head: DisplayPoint,
1587 cx: &mut ElementContext,
1588 ) -> bool {
1589 let max_height = cmp::min(
1590 12. * line_height,
1591 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
1592 );
1593 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
1594 if editor.context_menu_visible() {
1595 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
1596 } else {
1597 None
1598 }
1599 }) else {
1600 return false;
1601 };
1602
1603 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1604 let context_menu_size = context_menu.measure(available_space, cx);
1605
1606 let cursor_row_layout = &line_layouts[(position.row() - start_row) as usize].line;
1607 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1608 let y = (position.row() + 1) as f32 * line_height - scroll_pixel_position.y;
1609 let mut list_origin = content_origin + point(x, y);
1610 let list_width = context_menu_size.width;
1611 let list_height = context_menu_size.height;
1612
1613 // Snap the right edge of the list to the right edge of the window if
1614 // its horizontal bounds overflow.
1615 if list_origin.x + list_width > cx.viewport_size().width {
1616 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1617 }
1618
1619 if list_origin.y + list_height > text_hitbox.lower_right().y {
1620 list_origin.y -= line_height + list_height;
1621 }
1622
1623 cx.defer_draw(context_menu, list_origin, 1);
1624 true
1625 }
1626
1627 fn layout_mouse_context_menu(&self, cx: &mut ElementContext) -> Option<AnyElement> {
1628 let mouse_context_menu = self.editor.read(cx).mouse_context_menu.as_ref()?;
1629 let mut element = overlay()
1630 .position(mouse_context_menu.position)
1631 .child(mouse_context_menu.context_menu.clone())
1632 .anchor(AnchorCorner::TopLeft)
1633 .snap_to_window()
1634 .into_any();
1635 element.layout(gpui::Point::default(), AvailableSpace::min_size(), cx);
1636 Some(element)
1637 }
1638
1639 #[allow(clippy::too_many_arguments)]
1640 fn layout_hover_popovers(
1641 &self,
1642 snapshot: &EditorSnapshot,
1643 hitbox: &Hitbox,
1644 text_hitbox: &Hitbox,
1645 visible_display_row_range: Range<u32>,
1646 content_origin: gpui::Point<Pixels>,
1647 scroll_pixel_position: gpui::Point<Pixels>,
1648 line_layouts: &[LineWithInvisibles],
1649 line_height: Pixels,
1650 em_width: Pixels,
1651 cx: &mut ElementContext,
1652 ) {
1653 struct MeasuredHoverPopover {
1654 element: AnyElement,
1655 size: Size<Pixels>,
1656 horizontal_offset: Pixels,
1657 }
1658
1659 let max_size = size(
1660 (120. * em_width) // Default size
1661 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
1662 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1663 (16. * line_height) // Default size
1664 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
1665 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1666 );
1667
1668 let hover_popovers = self.editor.update(cx, |editor, cx| {
1669 editor.hover_state.render(
1670 &snapshot,
1671 &self.style,
1672 visible_display_row_range.clone(),
1673 max_size,
1674 editor.workspace.as_ref().map(|(w, _)| w.clone()),
1675 cx,
1676 )
1677 });
1678 let Some((position, hover_popovers)) = hover_popovers else {
1679 return;
1680 };
1681
1682 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1683
1684 // This is safe because we check on layout whether the required row is available
1685 let hovered_row_layout =
1686 &line_layouts[(position.row() - visible_display_row_range.start) as usize].line;
1687
1688 // Compute Hovered Point
1689 let x =
1690 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1691 let y = position.row() as f32 * line_height - scroll_pixel_position.y;
1692 let hovered_point = content_origin + point(x, y);
1693
1694 let mut overall_height = Pixels::ZERO;
1695 let mut measured_hover_popovers = Vec::new();
1696 for mut hover_popover in hover_popovers {
1697 let size = hover_popover.measure(available_space, cx);
1698 let horizontal_offset =
1699 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
1700
1701 overall_height += HOVER_POPOVER_GAP + size.height;
1702
1703 measured_hover_popovers.push(MeasuredHoverPopover {
1704 element: hover_popover,
1705 size,
1706 horizontal_offset,
1707 });
1708 }
1709 overall_height += HOVER_POPOVER_GAP;
1710
1711 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
1712 let mut occlusion = div()
1713 .size_full()
1714 .occlude()
1715 .on_mouse_move(|_, cx| cx.stop_propagation())
1716 .into_any_element();
1717 occlusion.measure(size(width, HOVER_POPOVER_GAP).into(), cx);
1718 cx.defer_draw(occlusion, origin, 2);
1719 }
1720
1721 if hovered_point.y > overall_height {
1722 // There is enough space above. Render popovers above the hovered point
1723 let mut current_y = hovered_point.y;
1724 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
1725 let size = popover.size;
1726 let popover_origin = point(
1727 hovered_point.x + popover.horizontal_offset,
1728 current_y - size.height,
1729 );
1730
1731 cx.defer_draw(popover.element, popover_origin, 2);
1732 if position != itertools::Position::Last {
1733 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
1734 draw_occluder(size.width, origin, cx);
1735 }
1736
1737 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1738 }
1739 } else {
1740 // There is not enough space above. Render popovers below the hovered point
1741 let mut current_y = hovered_point.y + line_height;
1742 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
1743 let size = popover.size;
1744 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
1745
1746 cx.defer_draw(popover.element, popover_origin, 2);
1747 if position != itertools::Position::Last {
1748 let origin = point(popover_origin.x, popover_origin.y + size.height);
1749 draw_occluder(size.width, origin, cx);
1750 }
1751
1752 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1753 }
1754 }
1755 }
1756
1757 fn paint_background(&self, layout: &EditorLayout, cx: &mut ElementContext) {
1758 cx.paint_layer(layout.hitbox.bounds, |cx| {
1759 let scroll_top = layout.position_map.snapshot.scroll_position().y;
1760 let gutter_bg = cx.theme().colors().editor_gutter_background;
1761 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
1762 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
1763
1764 if let EditorMode::Full = layout.mode {
1765 let mut active_rows = layout.active_rows.iter().peekable();
1766 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
1767 let mut end_row = *start_row;
1768 while active_rows.peek().map_or(false, |r| {
1769 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
1770 }) {
1771 active_rows.next().unwrap();
1772 end_row += 1;
1773 }
1774
1775 if !contains_non_empty_selection {
1776 let origin = point(
1777 layout.hitbox.origin.x,
1778 layout.hitbox.origin.y
1779 + (*start_row as f32 - scroll_top)
1780 * layout.position_map.line_height,
1781 );
1782 let size = size(
1783 layout.hitbox.size.width,
1784 layout.position_map.line_height * (end_row - start_row + 1) as f32,
1785 );
1786 let active_line_bg = cx.theme().colors().editor_active_line_background;
1787 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
1788 }
1789 }
1790
1791 let mut paint_highlight =
1792 |highlight_row_start: u32, highlight_row_end: u32, color| {
1793 let origin = point(
1794 layout.hitbox.origin.x,
1795 layout.hitbox.origin.y
1796 + (highlight_row_start as f32 - scroll_top)
1797 * layout.position_map.line_height,
1798 );
1799 let size = size(
1800 layout.hitbox.size.width,
1801 layout.position_map.line_height
1802 * (highlight_row_end + 1 - highlight_row_start) as f32,
1803 );
1804 cx.paint_quad(fill(Bounds { origin, size }, color));
1805 };
1806
1807 let mut last_row = None;
1808 let mut highlight_row_start = 0u32;
1809 let mut highlight_row_end = 0u32;
1810 for (&row, &color) in &layout.highlighted_rows {
1811 let paint = last_row.map_or(false, |(last_row, last_color)| {
1812 last_color != color || last_row + 1 < row
1813 });
1814
1815 if paint {
1816 let paint_range_is_unfinished = highlight_row_end == 0;
1817 if paint_range_is_unfinished {
1818 highlight_row_end = row;
1819 last_row = None;
1820 }
1821 paint_highlight(highlight_row_start, highlight_row_end, color);
1822 highlight_row_start = 0;
1823 highlight_row_end = 0;
1824 if !paint_range_is_unfinished {
1825 highlight_row_start = row;
1826 last_row = Some((row, color));
1827 }
1828 } else {
1829 if last_row.is_none() {
1830 highlight_row_start = row;
1831 } else {
1832 highlight_row_end = row;
1833 }
1834 last_row = Some((row, color));
1835 }
1836 }
1837 if let Some((row, hsla)) = last_row {
1838 highlight_row_end = row;
1839 paint_highlight(highlight_row_start, highlight_row_end, hsla);
1840 }
1841
1842 let scroll_left =
1843 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
1844
1845 for (wrap_position, active) in layout.wrap_guides.iter() {
1846 let x = (layout.text_hitbox.origin.x
1847 + *wrap_position
1848 + layout.position_map.em_width / 2.)
1849 - scroll_left;
1850
1851 let show_scrollbars = layout
1852 .scrollbar_layout
1853 .as_ref()
1854 .map_or(false, |scrollbar| scrollbar.visible);
1855 if x < layout.text_hitbox.origin.x
1856 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
1857 {
1858 continue;
1859 }
1860
1861 let color = if *active {
1862 cx.theme().colors().editor_active_wrap_guide
1863 } else {
1864 cx.theme().colors().editor_wrap_guide
1865 };
1866 cx.paint_quad(fill(
1867 Bounds {
1868 origin: point(x, layout.text_hitbox.origin.y),
1869 size: size(px(1.), layout.text_hitbox.size.height),
1870 },
1871 color,
1872 ));
1873 }
1874 }
1875 })
1876 }
1877
1878 fn paint_gutter(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
1879 let line_height = layout.position_map.line_height;
1880
1881 let scroll_position = layout.position_map.snapshot.scroll_position();
1882 let scroll_top = scroll_position.y * line_height;
1883
1884 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
1885
1886 let show_git_gutter = matches!(
1887 ProjectSettings::get_global(cx).git.git_gutter,
1888 Some(GitGutterSetting::TrackedFiles)
1889 );
1890
1891 if show_git_gutter {
1892 Self::paint_diff_hunks(layout, cx);
1893 }
1894
1895 for (ix, line) in layout.line_numbers.iter().enumerate() {
1896 if let Some(line) = line {
1897 let line_origin = layout.gutter_hitbox.origin
1898 + point(
1899 layout.gutter_hitbox.size.width
1900 - line.width
1901 - layout.gutter_dimensions.right_padding,
1902 ix as f32 * line_height - (scroll_top % line_height),
1903 );
1904
1905 line.paint(line_origin, line_height, cx).log_err();
1906 }
1907 }
1908
1909 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
1910 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
1911 for fold_indicator in layout.fold_indicators.iter_mut().flatten() {
1912 fold_indicator.paint(cx);
1913 }
1914 });
1915
1916 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
1917 indicator.paint(cx);
1918 }
1919 })
1920 }
1921
1922 fn paint_diff_hunks(layout: &EditorLayout, cx: &mut ElementContext) {
1923 if layout.display_hunks.is_empty() {
1924 return;
1925 }
1926
1927 let line_height = layout.position_map.line_height;
1928
1929 let scroll_position = layout.position_map.snapshot.scroll_position();
1930 let scroll_top = scroll_position.y * line_height;
1931
1932 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
1933 for hunk in &layout.display_hunks {
1934 let (display_row_range, status) = match hunk {
1935 //TODO: This rendering is entirely a horrible hack
1936 &DisplayDiffHunk::Folded { display_row: row } => {
1937 let start_y = row as f32 * line_height - scroll_top;
1938 let end_y = start_y + line_height;
1939
1940 let width = 0.275 * line_height;
1941 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
1942 let highlight_size = size(width * 2., end_y - start_y);
1943 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
1944 cx.paint_quad(quad(
1945 highlight_bounds,
1946 Corners::all(1. * line_height),
1947 cx.theme().status().modified,
1948 Edges::default(),
1949 transparent_black(),
1950 ));
1951
1952 continue;
1953 }
1954
1955 DisplayDiffHunk::Unfolded {
1956 display_row_range,
1957 status,
1958 } => (display_row_range, status),
1959 };
1960
1961 let color = match status {
1962 DiffHunkStatus::Added => cx.theme().status().created,
1963 DiffHunkStatus::Modified => cx.theme().status().modified,
1964
1965 //TODO: This rendering is entirely a horrible hack
1966 DiffHunkStatus::Removed => {
1967 let row = display_row_range.start;
1968
1969 let offset = line_height / 2.;
1970 let start_y = row as f32 * line_height - offset - scroll_top;
1971 let end_y = start_y + line_height;
1972
1973 let width = 0.275 * line_height;
1974 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
1975 let highlight_size = size(width * 2., end_y - start_y);
1976 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
1977 cx.paint_quad(quad(
1978 highlight_bounds,
1979 Corners::all(1. * line_height),
1980 cx.theme().status().deleted,
1981 Edges::default(),
1982 transparent_black(),
1983 ));
1984
1985 continue;
1986 }
1987 };
1988
1989 let start_row = display_row_range.start;
1990 let end_row = display_row_range.end;
1991 // If we're in a multibuffer, row range span might include an
1992 // excerpt header, so if we were to draw the marker straight away,
1993 // the hunk might include the rows of that header.
1994 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
1995 // Instead, we simply check whether the range we're dealing with includes
1996 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
1997 let end_row_in_current_excerpt = layout
1998 .position_map
1999 .snapshot
2000 .blocks_in_range(start_row..end_row)
2001 .find_map(|(start_row, block)| {
2002 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
2003 Some(start_row)
2004 } else {
2005 None
2006 }
2007 })
2008 .unwrap_or(end_row);
2009
2010 let start_y = start_row as f32 * line_height - scroll_top;
2011 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
2012
2013 let width = 0.275 * line_height;
2014 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2015 let highlight_size = size(width * 2., end_y - start_y);
2016 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2017 cx.paint_quad(quad(
2018 highlight_bounds,
2019 Corners::all(0.05 * line_height),
2020 color,
2021 Edges::default(),
2022 transparent_black(),
2023 ));
2024 }
2025 })
2026 }
2027
2028 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2029 cx.with_content_mask(
2030 Some(ContentMask {
2031 bounds: layout.text_hitbox.bounds,
2032 }),
2033 |cx| {
2034 let cursor_style = if self
2035 .editor
2036 .read(cx)
2037 .hovered_link_state
2038 .as_ref()
2039 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
2040 {
2041 CursorStyle::PointingHand
2042 } else {
2043 CursorStyle::IBeam
2044 };
2045 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
2046
2047 cx.with_element_id(Some("folds"), |cx| self.paint_folds(layout, cx));
2048 let invisible_display_ranges = self.paint_highlights(layout, cx);
2049 self.paint_lines(&invisible_display_ranges, layout, cx);
2050 self.paint_redactions(layout, cx);
2051 self.paint_cursors(layout, cx);
2052 },
2053 )
2054 }
2055
2056 fn paint_highlights(
2057 &mut self,
2058 layout: &mut EditorLayout,
2059 cx: &mut ElementContext,
2060 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
2061 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2062 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
2063 let line_end_overshoot = 0.15 * layout.position_map.line_height;
2064 for (range, color) in &layout.highlighted_ranges {
2065 self.paint_highlighted_range(
2066 range.clone(),
2067 *color,
2068 Pixels::ZERO,
2069 line_end_overshoot,
2070 layout,
2071 cx,
2072 );
2073 }
2074
2075 let corner_radius = 0.15 * layout.position_map.line_height;
2076
2077 for (player_color, selections) in &layout.selections {
2078 for selection in selections.into_iter() {
2079 self.paint_highlighted_range(
2080 selection.range.clone(),
2081 player_color.selection,
2082 corner_radius,
2083 corner_radius * 2.,
2084 layout,
2085 cx,
2086 );
2087
2088 if selection.is_local && !selection.range.is_empty() {
2089 invisible_display_ranges.push(selection.range.clone());
2090 }
2091 }
2092 }
2093 invisible_display_ranges
2094 })
2095 }
2096
2097 fn paint_lines(
2098 &mut self,
2099 invisible_display_ranges: &[Range<DisplayPoint>],
2100 layout: &EditorLayout,
2101 cx: &mut ElementContext,
2102 ) {
2103 let whitespace_setting = self
2104 .editor
2105 .read(cx)
2106 .buffer
2107 .read(cx)
2108 .settings_at(0, cx)
2109 .show_whitespaces;
2110
2111 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
2112 let row = layout.visible_display_row_range.start + ix as u32;
2113 line_with_invisibles.draw(
2114 layout,
2115 row,
2116 layout.content_origin,
2117 whitespace_setting,
2118 invisible_display_ranges,
2119 cx,
2120 )
2121 }
2122 }
2123
2124 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2125 if layout.redacted_ranges.is_empty() {
2126 return;
2127 }
2128
2129 let line_end_overshoot = layout.line_end_overshoot();
2130
2131 // A softer than perfect black
2132 let redaction_color = gpui::rgb(0x0e1111);
2133
2134 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2135 for range in layout.redacted_ranges.iter() {
2136 self.paint_highlighted_range(
2137 range.clone(),
2138 redaction_color.into(),
2139 Pixels::ZERO,
2140 line_end_overshoot,
2141 layout,
2142 cx,
2143 );
2144 }
2145 });
2146 }
2147
2148 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2149 for cursor in &mut layout.cursors {
2150 cursor.paint(layout.content_origin, cx);
2151 }
2152 }
2153
2154 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2155 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
2156 return;
2157 };
2158
2159 let thumb_bounds = scrollbar_layout.thumb_bounds();
2160 if scrollbar_layout.visible {
2161 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
2162 cx.paint_quad(quad(
2163 scrollbar_layout.hitbox.bounds,
2164 Corners::default(),
2165 cx.theme().colors().scrollbar_track_background,
2166 Edges {
2167 top: Pixels::ZERO,
2168 right: Pixels::ZERO,
2169 bottom: Pixels::ZERO,
2170 left: px(1.),
2171 },
2172 cx.theme().colors().scrollbar_track_border,
2173 ));
2174 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2175 let is_singleton = self.editor.read(cx).is_singleton(cx);
2176 if is_singleton && scrollbar_settings.selections {
2177 let start_anchor = Anchor::min();
2178 let end_anchor = Anchor::max();
2179 let background_ranges = self
2180 .editor
2181 .read(cx)
2182 .background_highlight_row_ranges::<BufferSearchHighlights>(
2183 start_anchor..end_anchor,
2184 &layout.position_map.snapshot,
2185 50000,
2186 );
2187 for range in background_ranges {
2188 let start_y = scrollbar_layout.y_for_row(range.start().row() as f32);
2189 let mut end_y = scrollbar_layout.y_for_row(range.end().row() as f32);
2190 if end_y - start_y < px(1.) {
2191 end_y = start_y + px(1.);
2192 }
2193 let bounds = Bounds::from_corners(
2194 point(scrollbar_layout.hitbox.left(), start_y),
2195 point(scrollbar_layout.hitbox.right(), end_y),
2196 );
2197 cx.paint_quad(quad(
2198 bounds,
2199 Corners::default(),
2200 cx.theme().status().info,
2201 Edges {
2202 top: Pixels::ZERO,
2203 right: px(1.),
2204 bottom: Pixels::ZERO,
2205 left: px(1.),
2206 },
2207 cx.theme().colors().scrollbar_thumb_border,
2208 ));
2209 }
2210 }
2211
2212 if is_singleton && scrollbar_settings.symbols_selections {
2213 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
2214 Anchor::min()..Anchor::max(),
2215 &layout.position_map.snapshot,
2216 cx.theme().colors(),
2217 );
2218 for hunk in selection_ranges {
2219 let start_display = Point::new(hunk.0.start.row(), 0)
2220 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2221 let end_display = Point::new(hunk.0.end.row(), 0)
2222 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2223 let start_y = scrollbar_layout.y_for_row(start_display.row() as f32);
2224 let mut end_y = if hunk.0.start == hunk.0.end {
2225 scrollbar_layout.y_for_row((end_display.row() + 1) as f32)
2226 } else {
2227 scrollbar_layout.y_for_row(end_display.row() as f32)
2228 };
2229
2230 if end_y - start_y < px(1.) {
2231 end_y = start_y + px(1.);
2232 }
2233 let bounds = Bounds::from_corners(
2234 point(scrollbar_layout.hitbox.left(), start_y),
2235 point(scrollbar_layout.hitbox.right(), end_y),
2236 );
2237
2238 cx.paint_quad(quad(
2239 bounds,
2240 Corners::default(),
2241 cx.theme().status().info,
2242 Edges {
2243 top: Pixels::ZERO,
2244 right: px(1.),
2245 bottom: Pixels::ZERO,
2246 left: px(1.),
2247 },
2248 cx.theme().colors().scrollbar_thumb_border,
2249 ));
2250 }
2251 }
2252
2253 if is_singleton && scrollbar_settings.git_diff {
2254 for hunk in layout
2255 .position_map
2256 .snapshot
2257 .buffer_snapshot
2258 .git_diff_hunks_in_range(0..layout.max_row)
2259 {
2260 let start_display = Point::new(hunk.associated_range.start, 0)
2261 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2262 let end_display = Point::new(hunk.associated_range.end, 0)
2263 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2264 let start_y = scrollbar_layout.y_for_row(start_display.row() as f32);
2265 let mut end_y = if hunk.associated_range.start == hunk.associated_range.end
2266 {
2267 scrollbar_layout.y_for_row((end_display.row() + 1) as f32)
2268 } else {
2269 scrollbar_layout.y_for_row(end_display.row() as f32)
2270 };
2271
2272 if end_y - start_y < px(1.) {
2273 end_y = start_y + px(1.);
2274 }
2275 let bounds = Bounds::from_corners(
2276 point(scrollbar_layout.hitbox.left(), start_y),
2277 point(scrollbar_layout.hitbox.right(), end_y),
2278 );
2279
2280 let color = match hunk.status() {
2281 DiffHunkStatus::Added => cx.theme().status().created,
2282 DiffHunkStatus::Modified => cx.theme().status().modified,
2283 DiffHunkStatus::Removed => cx.theme().status().deleted,
2284 };
2285 cx.paint_quad(quad(
2286 bounds,
2287 Corners::default(),
2288 color,
2289 Edges {
2290 top: Pixels::ZERO,
2291 right: px(1.),
2292 bottom: Pixels::ZERO,
2293 left: px(1.),
2294 },
2295 cx.theme().colors().scrollbar_thumb_border,
2296 ));
2297 }
2298 }
2299
2300 if is_singleton && scrollbar_settings.diagnostics {
2301 let max_point = layout
2302 .position_map
2303 .snapshot
2304 .display_snapshot
2305 .buffer_snapshot
2306 .max_point();
2307
2308 let diagnostics = layout
2309 .position_map
2310 .snapshot
2311 .buffer_snapshot
2312 .diagnostics_in_range::<_, Point>(Point::zero()..max_point, false)
2313 // We want to sort by severity, in order to paint the most severe diagnostics last.
2314 .sorted_by_key(|diagnostic| {
2315 std::cmp::Reverse(diagnostic.diagnostic.severity)
2316 });
2317
2318 for diagnostic in diagnostics {
2319 let start_display = diagnostic
2320 .range
2321 .start
2322 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2323 let end_display = diagnostic
2324 .range
2325 .end
2326 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2327 let start_y = scrollbar_layout.y_for_row(start_display.row() as f32);
2328 let mut end_y = if diagnostic.range.start == diagnostic.range.end {
2329 scrollbar_layout.y_for_row((end_display.row() + 1) as f32)
2330 } else {
2331 scrollbar_layout.y_for_row(end_display.row() as f32)
2332 };
2333
2334 if end_y - start_y < px(1.) {
2335 end_y = start_y + px(1.);
2336 }
2337 let bounds = Bounds::from_corners(
2338 point(scrollbar_layout.hitbox.left(), start_y),
2339 point(scrollbar_layout.hitbox.right(), end_y),
2340 );
2341
2342 let color = match diagnostic.diagnostic.severity {
2343 DiagnosticSeverity::ERROR => cx.theme().status().error,
2344 DiagnosticSeverity::WARNING => cx.theme().status().warning,
2345 DiagnosticSeverity::INFORMATION => cx.theme().status().info,
2346 _ => cx.theme().status().hint,
2347 };
2348 cx.paint_quad(quad(
2349 bounds,
2350 Corners::default(),
2351 color,
2352 Edges {
2353 top: Pixels::ZERO,
2354 right: px(1.),
2355 bottom: Pixels::ZERO,
2356 left: px(1.),
2357 },
2358 cx.theme().colors().scrollbar_thumb_border,
2359 ));
2360 }
2361 }
2362
2363 cx.paint_quad(quad(
2364 thumb_bounds,
2365 Corners::default(),
2366 cx.theme().colors().scrollbar_thumb_background,
2367 Edges {
2368 top: Pixels::ZERO,
2369 right: px(1.),
2370 bottom: Pixels::ZERO,
2371 left: px(1.),
2372 },
2373 cx.theme().colors().scrollbar_thumb_border,
2374 ));
2375 });
2376 }
2377
2378 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
2379
2380 let scroll_height = scrollbar_layout.scroll_height;
2381 let height = scrollbar_layout.height;
2382 let row_range = scrollbar_layout.visible_row_range.clone();
2383
2384 cx.on_mouse_event({
2385 let editor = self.editor.clone();
2386 let hitbox = scrollbar_layout.hitbox.clone();
2387 let mut mouse_position = cx.mouse_position();
2388 move |event: &MouseMoveEvent, phase, cx| {
2389 if phase == DispatchPhase::Capture {
2390 return;
2391 }
2392
2393 editor.update(cx, |editor, cx| {
2394 if event.pressed_button == Some(MouseButton::Left)
2395 && editor.scroll_manager.is_dragging_scrollbar()
2396 {
2397 let y = mouse_position.y;
2398 let new_y = event.position.y;
2399 if (hitbox.top()..hitbox.bottom()).contains(&y) {
2400 let mut position = editor.scroll_position(cx);
2401 position.y += (new_y - y) * scroll_height / height;
2402 if position.y < 0.0 {
2403 position.y = 0.0;
2404 }
2405 editor.set_scroll_position(position, cx);
2406 }
2407
2408 mouse_position = event.position;
2409 cx.stop_propagation();
2410 } else {
2411 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2412 if hitbox.is_hovered(cx) {
2413 editor.scroll_manager.show_scrollbar(cx);
2414 }
2415 }
2416 })
2417 }
2418 });
2419
2420 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
2421 cx.on_mouse_event({
2422 let editor = self.editor.clone();
2423 move |_: &MouseUpEvent, phase, cx| {
2424 if phase == DispatchPhase::Capture {
2425 return;
2426 }
2427
2428 editor.update(cx, |editor, cx| {
2429 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2430 cx.stop_propagation();
2431 });
2432 }
2433 });
2434 } else {
2435 cx.on_mouse_event({
2436 let editor = self.editor.clone();
2437 let hitbox = scrollbar_layout.hitbox.clone();
2438 move |event: &MouseDownEvent, phase, cx| {
2439 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
2440 return;
2441 }
2442
2443 editor.update(cx, |editor, cx| {
2444 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
2445
2446 let y = event.position.y;
2447 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
2448 let center_row =
2449 ((y - hitbox.top()) * scroll_height / height).round() as u32;
2450 let top_row = center_row
2451 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
2452 let mut position = editor.scroll_position(cx);
2453 position.y = top_row as f32;
2454 editor.set_scroll_position(position, cx);
2455 } else {
2456 editor.scroll_manager.show_scrollbar(cx);
2457 }
2458
2459 cx.stop_propagation();
2460 });
2461 }
2462 });
2463 }
2464 }
2465
2466 #[allow(clippy::too_many_arguments)]
2467 fn paint_highlighted_range(
2468 &self,
2469 range: Range<DisplayPoint>,
2470 color: Hsla,
2471 corner_radius: Pixels,
2472 line_end_overshoot: Pixels,
2473 layout: &EditorLayout,
2474 cx: &mut ElementContext,
2475 ) {
2476 let start_row = layout.visible_display_row_range.start;
2477 let end_row = layout.visible_display_row_range.end;
2478 if range.start != range.end {
2479 let row_range = if range.end.column() == 0 {
2480 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
2481 } else {
2482 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
2483 };
2484
2485 let highlighted_range = HighlightedRange {
2486 color,
2487 line_height: layout.position_map.line_height,
2488 corner_radius,
2489 start_y: layout.content_origin.y
2490 + row_range.start as f32 * layout.position_map.line_height
2491 - layout.position_map.scroll_pixel_position.y,
2492 lines: row_range
2493 .into_iter()
2494 .map(|row| {
2495 let line_layout =
2496 &layout.position_map.line_layouts[(row - start_row) as usize].line;
2497 HighlightedRangeLine {
2498 start_x: if row == range.start.row() {
2499 layout.content_origin.x
2500 + line_layout.x_for_index(range.start.column() as usize)
2501 - layout.position_map.scroll_pixel_position.x
2502 } else {
2503 layout.content_origin.x
2504 - layout.position_map.scroll_pixel_position.x
2505 },
2506 end_x: if row == range.end.row() {
2507 layout.content_origin.x
2508 + line_layout.x_for_index(range.end.column() as usize)
2509 - layout.position_map.scroll_pixel_position.x
2510 } else {
2511 layout.content_origin.x + line_layout.width + line_end_overshoot
2512 - layout.position_map.scroll_pixel_position.x
2513 },
2514 }
2515 })
2516 .collect(),
2517 };
2518
2519 highlighted_range.paint(layout.text_hitbox.bounds, cx);
2520 }
2521 }
2522
2523 fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2524 if layout.folds.is_empty() {
2525 return;
2526 }
2527
2528 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2529 let fold_corner_radius = 0.15 * layout.position_map.line_height;
2530 for mut fold in mem::take(&mut layout.folds) {
2531 fold.hover_element.paint(cx);
2532
2533 let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
2534 let fold_background = if hover_element.interactivity().active.unwrap() {
2535 cx.theme().colors().ghost_element_active
2536 } else if hover_element.interactivity().hovered.unwrap() {
2537 cx.theme().colors().ghost_element_hover
2538 } else {
2539 cx.theme().colors().ghost_element_background
2540 };
2541
2542 self.paint_highlighted_range(
2543 fold.display_range.clone(),
2544 fold_background,
2545 fold_corner_radius,
2546 fold_corner_radius * 2.,
2547 layout,
2548 cx,
2549 );
2550 }
2551 })
2552 }
2553
2554 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2555 for mut block in layout.blocks.drain(..) {
2556 block.element.paint(cx);
2557 }
2558 }
2559
2560 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2561 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
2562 mouse_context_menu.paint(cx);
2563 }
2564 }
2565
2566 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2567 cx.on_mouse_event({
2568 let position_map = layout.position_map.clone();
2569 let editor = self.editor.clone();
2570 let hitbox = layout.hitbox.clone();
2571 let mut delta = ScrollDelta::default();
2572
2573 move |event: &ScrollWheelEvent, phase, cx| {
2574 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
2575 delta = delta.coalesce(event.delta);
2576 editor.update(cx, |editor, cx| {
2577 let position_map: &PositionMap = &position_map;
2578
2579 let line_height = position_map.line_height;
2580 let max_glyph_width = position_map.em_width;
2581 let (delta, axis) = match delta {
2582 gpui::ScrollDelta::Pixels(mut pixels) => {
2583 //Trackpad
2584 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2585 (pixels, axis)
2586 }
2587
2588 gpui::ScrollDelta::Lines(lines) => {
2589 //Not trackpad
2590 let pixels =
2591 point(lines.x * max_glyph_width, lines.y * line_height);
2592 (pixels, None)
2593 }
2594 };
2595
2596 let scroll_position = position_map.snapshot.scroll_position();
2597 let x = (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width;
2598 let y = (scroll_position.y * line_height - delta.y) / line_height;
2599 let scroll_position =
2600 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2601 editor.scroll(scroll_position, axis, cx);
2602 cx.stop_propagation();
2603 });
2604 }
2605 }
2606 });
2607 }
2608
2609 fn paint_mouse_listeners(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2610 self.paint_scroll_wheel_listener(layout, cx);
2611
2612 cx.on_mouse_event({
2613 let position_map = layout.position_map.clone();
2614 let editor = self.editor.clone();
2615 let text_hitbox = layout.text_hitbox.clone();
2616 let gutter_hitbox = layout.gutter_hitbox.clone();
2617
2618 move |event: &MouseDownEvent, phase, cx| {
2619 if phase == DispatchPhase::Bubble {
2620 match event.button {
2621 MouseButton::Left => editor.update(cx, |editor, cx| {
2622 Self::mouse_left_down(
2623 editor,
2624 event,
2625 &position_map,
2626 &text_hitbox,
2627 &gutter_hitbox,
2628 cx,
2629 );
2630 }),
2631 MouseButton::Right => editor.update(cx, |editor, cx| {
2632 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
2633 }),
2634 _ => {}
2635 };
2636 }
2637 }
2638 });
2639
2640 cx.on_mouse_event({
2641 let editor = self.editor.clone();
2642 let position_map = layout.position_map.clone();
2643 let text_hitbox = layout.text_hitbox.clone();
2644
2645 move |event: &MouseUpEvent, phase, cx| {
2646 if phase == DispatchPhase::Bubble {
2647 editor.update(cx, |editor, cx| {
2648 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
2649 });
2650 }
2651 }
2652 });
2653 cx.on_mouse_event({
2654 let position_map = layout.position_map.clone();
2655 let editor = self.editor.clone();
2656 let text_hitbox = layout.text_hitbox.clone();
2657 let gutter_hitbox = layout.gutter_hitbox.clone();
2658
2659 move |event: &MouseMoveEvent, phase, cx| {
2660 if phase == DispatchPhase::Bubble {
2661 editor.update(cx, |editor, cx| {
2662 if event.pressed_button == Some(MouseButton::Left) {
2663 Self::mouse_dragged(
2664 editor,
2665 event,
2666 &position_map,
2667 text_hitbox.bounds,
2668 cx,
2669 )
2670 }
2671
2672 Self::mouse_moved(
2673 editor,
2674 event,
2675 &position_map,
2676 &text_hitbox,
2677 &gutter_hitbox,
2678 cx,
2679 )
2680 });
2681 }
2682 }
2683 });
2684 }
2685
2686 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
2687 bounds.upper_right().x - self.style.scrollbar_width
2688 }
2689
2690 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
2691 let style = &self.style;
2692 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2693 let layout = cx
2694 .text_system()
2695 .shape_line(
2696 SharedString::from(" ".repeat(column)),
2697 font_size,
2698 &[TextRun {
2699 len: column,
2700 font: style.text.font(),
2701 color: Hsla::default(),
2702 background_color: None,
2703 underline: None,
2704 strikethrough: None,
2705 }],
2706 )
2707 .unwrap();
2708
2709 layout.width
2710 }
2711
2712 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
2713 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
2714 self.column_pixels(digit_count, cx)
2715 }
2716}
2717
2718#[derive(Debug)]
2719pub(crate) struct LineWithInvisibles {
2720 pub line: ShapedLine,
2721 invisibles: Vec<Invisible>,
2722}
2723
2724impl LineWithInvisibles {
2725 fn from_chunks<'a>(
2726 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2727 text_style: &TextStyle,
2728 max_line_len: usize,
2729 max_line_count: usize,
2730 line_number_layouts: &[Option<ShapedLine>],
2731 editor_mode: EditorMode,
2732 cx: &WindowContext,
2733 ) -> Vec<Self> {
2734 let mut layouts = Vec::with_capacity(max_line_count);
2735 let mut line = String::new();
2736 let mut invisibles = Vec::new();
2737 let mut styles = Vec::new();
2738 let mut non_whitespace_added = false;
2739 let mut row = 0;
2740 let mut line_exceeded_max_len = false;
2741 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2742
2743 for highlighted_chunk in chunks.chain([HighlightedChunk {
2744 chunk: "\n",
2745 style: None,
2746 is_tab: false,
2747 }]) {
2748 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2749 if ix > 0 {
2750 let shaped_line = cx
2751 .text_system()
2752 .shape_line(line.clone().into(), font_size, &styles)
2753 .unwrap();
2754 layouts.push(Self {
2755 line: shaped_line,
2756 invisibles: std::mem::take(&mut invisibles),
2757 });
2758
2759 line.clear();
2760 styles.clear();
2761 row += 1;
2762 line_exceeded_max_len = false;
2763 non_whitespace_added = false;
2764 if row == max_line_count {
2765 return layouts;
2766 }
2767 }
2768
2769 if !line_chunk.is_empty() && !line_exceeded_max_len {
2770 let text_style = if let Some(style) = highlighted_chunk.style {
2771 Cow::Owned(text_style.clone().highlight(style))
2772 } else {
2773 Cow::Borrowed(text_style)
2774 };
2775
2776 if line.len() + line_chunk.len() > max_line_len {
2777 let mut chunk_len = max_line_len - line.len();
2778 while !line_chunk.is_char_boundary(chunk_len) {
2779 chunk_len -= 1;
2780 }
2781 line_chunk = &line_chunk[..chunk_len];
2782 line_exceeded_max_len = true;
2783 }
2784
2785 styles.push(TextRun {
2786 len: line_chunk.len(),
2787 font: text_style.font(),
2788 color: text_style.color,
2789 background_color: text_style.background_color,
2790 underline: text_style.underline,
2791 strikethrough: text_style.strikethrough,
2792 });
2793
2794 if editor_mode == EditorMode::Full {
2795 // Line wrap pads its contents with fake whitespaces,
2796 // avoid printing them
2797 let inside_wrapped_string = line_number_layouts
2798 .get(row)
2799 .and_then(|layout| layout.as_ref())
2800 .is_none();
2801 if highlighted_chunk.is_tab {
2802 if non_whitespace_added || !inside_wrapped_string {
2803 invisibles.push(Invisible::Tab {
2804 line_start_offset: line.len(),
2805 });
2806 }
2807 } else {
2808 invisibles.extend(
2809 line_chunk
2810 .chars()
2811 .enumerate()
2812 .filter(|(_, line_char)| {
2813 let is_whitespace = line_char.is_whitespace();
2814 non_whitespace_added |= !is_whitespace;
2815 is_whitespace
2816 && (non_whitespace_added || !inside_wrapped_string)
2817 })
2818 .map(|(whitespace_index, _)| Invisible::Whitespace {
2819 line_offset: line.len() + whitespace_index,
2820 }),
2821 )
2822 }
2823 }
2824
2825 line.push_str(line_chunk);
2826 }
2827 }
2828 }
2829
2830 layouts
2831 }
2832
2833 fn draw(
2834 &self,
2835 layout: &EditorLayout,
2836 row: u32,
2837 content_origin: gpui::Point<Pixels>,
2838 whitespace_setting: ShowWhitespaceSetting,
2839 selection_ranges: &[Range<DisplayPoint>],
2840 cx: &mut ElementContext,
2841 ) {
2842 let line_height = layout.position_map.line_height;
2843 let line_y =
2844 line_height * (row as f32 - layout.position_map.scroll_pixel_position.y / line_height);
2845
2846 self.line
2847 .paint(
2848 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y),
2849 line_height,
2850 cx,
2851 )
2852 .log_err();
2853
2854 self.draw_invisibles(
2855 &selection_ranges,
2856 layout,
2857 content_origin,
2858 line_y,
2859 row,
2860 line_height,
2861 whitespace_setting,
2862 cx,
2863 );
2864 }
2865
2866 #[allow(clippy::too_many_arguments)]
2867 fn draw_invisibles(
2868 &self,
2869 selection_ranges: &[Range<DisplayPoint>],
2870 layout: &EditorLayout,
2871 content_origin: gpui::Point<Pixels>,
2872 line_y: Pixels,
2873 row: u32,
2874 line_height: Pixels,
2875 whitespace_setting: ShowWhitespaceSetting,
2876 cx: &mut ElementContext,
2877 ) {
2878 let allowed_invisibles_regions = match whitespace_setting {
2879 ShowWhitespaceSetting::None => return,
2880 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2881 ShowWhitespaceSetting::All => None,
2882 };
2883
2884 for invisible in &self.invisibles {
2885 let (&token_offset, invisible_symbol) = match invisible {
2886 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2887 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2888 };
2889
2890 let x_offset = self.line.x_for_index(token_offset);
2891 let invisible_offset =
2892 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2893 let origin = content_origin
2894 + gpui::point(
2895 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
2896 line_y,
2897 );
2898
2899 if let Some(allowed_regions) = allowed_invisibles_regions {
2900 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2901 if !allowed_regions
2902 .iter()
2903 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2904 {
2905 continue;
2906 }
2907 }
2908 invisible_symbol.paint(origin, line_height, cx).log_err();
2909 }
2910 }
2911}
2912
2913#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2914enum Invisible {
2915 Tab { line_start_offset: usize },
2916 Whitespace { line_offset: usize },
2917}
2918
2919impl Element for EditorElement {
2920 type BeforeLayout = ();
2921 type AfterLayout = EditorLayout;
2922
2923 fn before_layout(&mut self, cx: &mut ElementContext) -> (gpui::LayoutId, ()) {
2924 self.editor.update(cx, |editor, cx| {
2925 editor.set_style(self.style.clone(), cx);
2926
2927 let layout_id = match editor.mode {
2928 EditorMode::SingleLine => {
2929 let rem_size = cx.rem_size();
2930 let mut style = Style::default();
2931 style.size.width = relative(1.).into();
2932 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2933 cx.with_element_context(|cx| cx.request_layout(&style, None))
2934 }
2935 EditorMode::AutoHeight { max_lines } => {
2936 let editor_handle = cx.view().clone();
2937 let max_line_number_width =
2938 self.max_line_number_width(&editor.snapshot(cx), cx);
2939 cx.with_element_context(|cx| {
2940 cx.request_measured_layout(
2941 Style::default(),
2942 move |known_dimensions, _, cx| {
2943 editor_handle
2944 .update(cx, |editor, cx| {
2945 compute_auto_height_layout(
2946 editor,
2947 max_lines,
2948 max_line_number_width,
2949 known_dimensions,
2950 cx,
2951 )
2952 })
2953 .unwrap_or_default()
2954 },
2955 )
2956 })
2957 }
2958 EditorMode::Full => {
2959 let mut style = Style::default();
2960 style.size.width = relative(1.).into();
2961 style.size.height = relative(1.).into();
2962 cx.with_element_context(|cx| cx.request_layout(&style, None))
2963 }
2964 };
2965
2966 (layout_id, ())
2967 })
2968 }
2969
2970 fn after_layout(
2971 &mut self,
2972 bounds: Bounds<Pixels>,
2973 _: &mut Self::BeforeLayout,
2974 cx: &mut ElementContext,
2975 ) -> Self::AfterLayout {
2976 let text_style = TextStyleRefinement {
2977 font_size: Some(self.style.text.font_size),
2978 line_height: Some(self.style.text.line_height),
2979 ..Default::default()
2980 };
2981 cx.with_text_style(Some(text_style), |cx| {
2982 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2983 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
2984 let style = self.style.clone();
2985
2986 let font_id = cx.text_system().resolve_font(&style.text.font());
2987 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2988 let line_height = style.text.line_height_in_pixels(cx.rem_size());
2989 let em_width = cx
2990 .text_system()
2991 .typographic_bounds(font_id, font_size, 'm')
2992 .unwrap()
2993 .size
2994 .width;
2995 let em_advance = cx
2996 .text_system()
2997 .advance(font_id, font_size, 'm')
2998 .unwrap()
2999 .width;
3000
3001 let gutter_dimensions = snapshot.gutter_dimensions(
3002 font_id,
3003 font_size,
3004 em_width,
3005 self.max_line_number_width(&snapshot, cx),
3006 cx,
3007 );
3008 let text_width = bounds.size.width - gutter_dimensions.width;
3009 let overscroll = size(em_width, px(0.));
3010
3011 snapshot = self.editor.update(cx, |editor, cx| {
3012 editor.gutter_width = gutter_dimensions.width;
3013 editor.set_visible_line_count(bounds.size.height / line_height, cx);
3014
3015 let editor_width =
3016 text_width - gutter_dimensions.margin - overscroll.width - em_width;
3017 let wrap_width = match editor.soft_wrap_mode(cx) {
3018 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
3019 SoftWrap::EditorWidth => editor_width,
3020 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
3021 };
3022
3023 if editor.set_wrap_width(Some(wrap_width), cx) {
3024 editor.snapshot(cx)
3025 } else {
3026 snapshot
3027 }
3028 });
3029
3030 let wrap_guides = self
3031 .editor
3032 .read(cx)
3033 .wrap_guides(cx)
3034 .iter()
3035 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
3036 .collect::<SmallVec<[_; 2]>>();
3037
3038 let hitbox = cx.insert_hitbox(bounds, false);
3039 let gutter_hitbox = cx.insert_hitbox(
3040 Bounds {
3041 origin: bounds.origin,
3042 size: size(gutter_dimensions.width, bounds.size.height),
3043 },
3044 false,
3045 );
3046 let text_hitbox = cx.insert_hitbox(
3047 Bounds {
3048 origin: gutter_hitbox.upper_right(),
3049 size: size(text_width, bounds.size.height),
3050 },
3051 false,
3052 );
3053 // Offset the content_bounds from the text_bounds by the gutter margin (which
3054 // is roughly half a character wide) to make hit testing work more like how we want.
3055 let content_origin =
3056 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
3057
3058 let autoscroll_horizontally = self.editor.update(cx, |editor, cx| {
3059 let autoscroll_horizontally =
3060 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
3061 snapshot = editor.snapshot(cx);
3062 autoscroll_horizontally
3063 });
3064
3065 let mut scroll_position = snapshot.scroll_position();
3066 // The scroll position is a fractional point, the whole number of which represents
3067 // the top of the window in terms of display rows.
3068 let start_row = scroll_position.y as u32;
3069 let height_in_lines = bounds.size.height / line_height;
3070 let max_row = snapshot.max_point().row();
3071
3072 // Add 1 to ensure selections bleed off screen
3073 let end_row =
3074 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
3075
3076 let start_anchor = if start_row == 0 {
3077 Anchor::min()
3078 } else {
3079 snapshot.buffer_snapshot.anchor_before(
3080 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
3081 )
3082 };
3083 let end_anchor = if end_row > max_row {
3084 Anchor::max()
3085 } else {
3086 snapshot.buffer_snapshot.anchor_before(
3087 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
3088 )
3089 };
3090
3091 let highlighted_rows = self
3092 .editor
3093 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
3094 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
3095 start_anchor..end_anchor,
3096 &snapshot.display_snapshot,
3097 cx.theme().colors(),
3098 );
3099
3100 let redacted_ranges = self.editor.read(cx).redacted_ranges(
3101 start_anchor..end_anchor,
3102 &snapshot.display_snapshot,
3103 cx,
3104 );
3105
3106 let (selections, active_rows, newest_selection_head) = self.layout_selections(
3107 start_anchor,
3108 end_anchor,
3109 &snapshot,
3110 start_row,
3111 end_row,
3112 cx,
3113 );
3114
3115 let (line_numbers, fold_statuses) = self.layout_line_numbers(
3116 start_row..end_row,
3117 &active_rows,
3118 newest_selection_head,
3119 &snapshot,
3120 cx,
3121 );
3122
3123 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
3124
3125 let mut max_visible_line_width = Pixels::ZERO;
3126 let line_layouts =
3127 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
3128 for line_with_invisibles in &line_layouts {
3129 if line_with_invisibles.line.width > max_visible_line_width {
3130 max_visible_line_width = line_with_invisibles.line.width;
3131 }
3132 }
3133
3134 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
3135 .unwrap()
3136 .width;
3137 let mut scroll_width =
3138 longest_line_width.max(max_visible_line_width) + overscroll.width;
3139 let mut blocks = self.build_blocks(
3140 start_row..end_row,
3141 &snapshot,
3142 &hitbox,
3143 &text_hitbox,
3144 &mut scroll_width,
3145 &gutter_dimensions,
3146 em_width,
3147 gutter_dimensions.width + gutter_dimensions.margin,
3148 line_height,
3149 &line_layouts,
3150 cx,
3151 );
3152
3153 let scroll_max = point(
3154 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
3155 max_row as f32,
3156 );
3157
3158 self.editor.update(cx, |editor, cx| {
3159 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3160
3161 let autoscrolled = if autoscroll_horizontally {
3162 editor.autoscroll_horizontally(
3163 start_row,
3164 text_hitbox.size.width,
3165 scroll_width,
3166 em_width,
3167 &line_layouts,
3168 cx,
3169 )
3170 } else {
3171 false
3172 };
3173
3174 if clamped || autoscrolled {
3175 snapshot = editor.snapshot(cx);
3176 scroll_position = snapshot.scroll_position();
3177 }
3178 });
3179
3180 let scroll_pixel_position = point(
3181 scroll_position.x * em_width,
3182 scroll_position.y * line_height,
3183 );
3184
3185 cx.with_element_id(Some("blocks"), |cx| {
3186 self.layout_blocks(
3187 &mut blocks,
3188 &hitbox,
3189 line_height,
3190 scroll_pixel_position,
3191 cx,
3192 );
3193 });
3194
3195 let cursors = self.layout_cursors(
3196 &snapshot,
3197 &selections,
3198 start_row..end_row,
3199 &line_layouts,
3200 &text_hitbox,
3201 content_origin,
3202 scroll_pixel_position,
3203 line_height,
3204 em_width,
3205 cx,
3206 );
3207
3208 let scrollbar_layout = self.layout_scrollbar(
3209 &snapshot,
3210 bounds,
3211 scroll_position,
3212 line_height,
3213 height_in_lines,
3214 cx,
3215 );
3216
3217 let folds = cx.with_element_id(Some("folds"), |cx| {
3218 self.layout_folds(
3219 &snapshot,
3220 content_origin,
3221 start_anchor..end_anchor,
3222 start_row..end_row,
3223 scroll_pixel_position,
3224 line_height,
3225 &line_layouts,
3226 cx,
3227 )
3228 });
3229
3230 let gutter_settings = EditorSettings::get_global(cx).gutter;
3231
3232 let mut context_menu_visible = false;
3233 let mut code_actions_indicator = None;
3234 if let Some(newest_selection_head) = newest_selection_head {
3235 if (start_row..end_row).contains(&newest_selection_head.row()) {
3236 context_menu_visible = self.layout_context_menu(
3237 line_height,
3238 &hitbox,
3239 &text_hitbox,
3240 content_origin,
3241 start_row,
3242 scroll_pixel_position,
3243 &line_layouts,
3244 newest_selection_head,
3245 cx,
3246 );
3247 if gutter_settings.code_actions {
3248 code_actions_indicator = self.layout_code_actions_indicator(
3249 line_height,
3250 newest_selection_head,
3251 scroll_pixel_position,
3252 &gutter_dimensions,
3253 &gutter_hitbox,
3254 cx,
3255 );
3256 }
3257 }
3258 }
3259
3260 if !context_menu_visible && !cx.has_active_drag() {
3261 self.layout_hover_popovers(
3262 &snapshot,
3263 &hitbox,
3264 &text_hitbox,
3265 start_row..end_row,
3266 content_origin,
3267 scroll_pixel_position,
3268 &line_layouts,
3269 line_height,
3270 em_width,
3271 cx,
3272 );
3273 }
3274
3275 let mouse_context_menu = self.layout_mouse_context_menu(cx);
3276
3277 let fold_indicators = if gutter_settings.folds {
3278 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
3279 self.layout_gutter_fold_indicators(
3280 fold_statuses,
3281 line_height,
3282 &gutter_dimensions,
3283 gutter_settings,
3284 scroll_pixel_position,
3285 &gutter_hitbox,
3286 cx,
3287 )
3288 })
3289 } else {
3290 Vec::new()
3291 };
3292
3293 let invisible_symbol_font_size = font_size / 2.;
3294 let tab_invisible = cx
3295 .text_system()
3296 .shape_line(
3297 "→".into(),
3298 invisible_symbol_font_size,
3299 &[TextRun {
3300 len: "→".len(),
3301 font: self.style.text.font(),
3302 color: cx.theme().colors().editor_invisible,
3303 background_color: None,
3304 underline: None,
3305 strikethrough: None,
3306 }],
3307 )
3308 .unwrap();
3309 let space_invisible = cx
3310 .text_system()
3311 .shape_line(
3312 "•".into(),
3313 invisible_symbol_font_size,
3314 &[TextRun {
3315 len: "•".len(),
3316 font: self.style.text.font(),
3317 color: cx.theme().colors().editor_invisible,
3318 background_color: None,
3319 underline: None,
3320 strikethrough: None,
3321 }],
3322 )
3323 .unwrap();
3324
3325 EditorLayout {
3326 mode: snapshot.mode,
3327 position_map: Arc::new(PositionMap {
3328 size: bounds.size,
3329 scroll_pixel_position,
3330 scroll_max,
3331 line_layouts,
3332 line_height,
3333 em_width,
3334 em_advance,
3335 snapshot,
3336 }),
3337 visible_display_row_range: start_row..end_row,
3338 wrap_guides,
3339 hitbox,
3340 text_hitbox,
3341 gutter_hitbox,
3342 gutter_dimensions,
3343 content_origin,
3344 scrollbar_layout,
3345 max_row,
3346 active_rows,
3347 highlighted_rows,
3348 highlighted_ranges,
3349 redacted_ranges,
3350 line_numbers,
3351 display_hunks,
3352 folds,
3353 blocks,
3354 cursors,
3355 selections,
3356 mouse_context_menu,
3357 code_actions_indicator,
3358 fold_indicators,
3359 tab_invisible,
3360 space_invisible,
3361 }
3362 })
3363 })
3364 }
3365
3366 fn paint(
3367 &mut self,
3368 bounds: Bounds<gpui::Pixels>,
3369 _: &mut Self::BeforeLayout,
3370 layout: &mut Self::AfterLayout,
3371 cx: &mut ElementContext,
3372 ) {
3373 let focus_handle = self.editor.focus_handle(cx);
3374 let key_context = self.editor.read(cx).key_context(cx);
3375 cx.set_focus_handle(&focus_handle);
3376 cx.set_key_context(key_context);
3377 cx.set_view_id(self.editor.entity_id());
3378 cx.handle_input(
3379 &focus_handle,
3380 ElementInputHandler::new(bounds, self.editor.clone()),
3381 );
3382 self.register_actions(cx);
3383 self.register_key_listeners(cx, layout);
3384
3385 let text_style = TextStyleRefinement {
3386 font_size: Some(self.style.text.font_size),
3387 line_height: Some(self.style.text.line_height),
3388 ..Default::default()
3389 };
3390 cx.with_text_style(Some(text_style), |cx| {
3391 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3392 self.paint_mouse_listeners(layout, cx);
3393
3394 self.paint_background(layout, cx);
3395 if layout.gutter_hitbox.size.width > Pixels::ZERO {
3396 self.paint_gutter(layout, cx);
3397 }
3398 self.paint_text(layout, cx);
3399
3400 if !layout.blocks.is_empty() {
3401 cx.with_element_id(Some("blocks"), |cx| {
3402 self.paint_blocks(layout, cx);
3403 });
3404 }
3405
3406 self.paint_scrollbar(layout, cx);
3407 self.paint_mouse_context_menu(layout, cx);
3408 });
3409 })
3410 }
3411}
3412
3413impl IntoElement for EditorElement {
3414 type Element = Self;
3415
3416 fn into_element(self) -> Self::Element {
3417 self
3418 }
3419}
3420
3421type BufferRow = u32;
3422
3423pub struct EditorLayout {
3424 position_map: Arc<PositionMap>,
3425 hitbox: Hitbox,
3426 text_hitbox: Hitbox,
3427 gutter_hitbox: Hitbox,
3428 gutter_dimensions: GutterDimensions,
3429 content_origin: gpui::Point<Pixels>,
3430 scrollbar_layout: Option<ScrollbarLayout>,
3431 mode: EditorMode,
3432 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3433 visible_display_row_range: Range<u32>,
3434 active_rows: BTreeMap<u32, bool>,
3435 highlighted_rows: BTreeMap<u32, Hsla>,
3436 line_numbers: Vec<Option<ShapedLine>>,
3437 display_hunks: Vec<DisplayDiffHunk>,
3438 folds: Vec<FoldLayout>,
3439 blocks: Vec<BlockLayout>,
3440 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3441 redacted_ranges: Vec<Range<DisplayPoint>>,
3442 cursors: Vec<CursorLayout>,
3443 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3444 max_row: u32,
3445 code_actions_indicator: Option<AnyElement>,
3446 fold_indicators: Vec<Option<AnyElement>>,
3447 mouse_context_menu: Option<AnyElement>,
3448 tab_invisible: ShapedLine,
3449 space_invisible: ShapedLine,
3450}
3451
3452impl EditorLayout {
3453 fn line_end_overshoot(&self) -> Pixels {
3454 0.15 * self.position_map.line_height
3455 }
3456}
3457
3458struct ScrollbarLayout {
3459 hitbox: Hitbox,
3460 visible_row_range: Range<f32>,
3461 visible: bool,
3462 height: Pixels,
3463 scroll_height: f32,
3464 first_row_y_offset: Pixels,
3465 row_height: Pixels,
3466}
3467
3468impl ScrollbarLayout {
3469 fn thumb_bounds(&self) -> Bounds<Pixels> {
3470 let thumb_top = self.y_for_row(self.visible_row_range.start) - self.first_row_y_offset;
3471 let thumb_bottom = self.y_for_row(self.visible_row_range.end) + self.first_row_y_offset;
3472 Bounds::from_corners(
3473 point(self.hitbox.left(), thumb_top),
3474 point(self.hitbox.right(), thumb_bottom),
3475 )
3476 }
3477
3478 fn y_for_row(&self, row: f32) -> Pixels {
3479 self.hitbox.top() + self.first_row_y_offset + row * self.row_height
3480 }
3481}
3482
3483struct FoldLayout {
3484 display_range: Range<DisplayPoint>,
3485 hover_element: AnyElement,
3486}
3487
3488struct PositionMap {
3489 size: Size<Pixels>,
3490 line_height: Pixels,
3491 scroll_pixel_position: gpui::Point<Pixels>,
3492 scroll_max: gpui::Point<f32>,
3493 em_width: Pixels,
3494 em_advance: Pixels,
3495 line_layouts: Vec<LineWithInvisibles>,
3496 snapshot: EditorSnapshot,
3497}
3498
3499#[derive(Debug, Copy, Clone)]
3500pub struct PointForPosition {
3501 pub previous_valid: DisplayPoint,
3502 pub next_valid: DisplayPoint,
3503 pub exact_unclipped: DisplayPoint,
3504 pub column_overshoot_after_line_end: u32,
3505}
3506
3507impl PointForPosition {
3508 pub fn as_valid(&self) -> Option<DisplayPoint> {
3509 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3510 Some(self.previous_valid)
3511 } else {
3512 None
3513 }
3514 }
3515}
3516
3517impl PositionMap {
3518 fn point_for_position(
3519 &self,
3520 text_bounds: Bounds<Pixels>,
3521 position: gpui::Point<Pixels>,
3522 ) -> PointForPosition {
3523 let scroll_position = self.snapshot.scroll_position();
3524 let position = position - text_bounds.origin;
3525 let y = position.y.max(px(0.)).min(self.size.height);
3526 let x = position.x + (scroll_position.x * self.em_width);
3527 let row = ((y / self.line_height) + scroll_position.y) as u32;
3528
3529 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3530 .line_layouts
3531 .get(row as usize - scroll_position.y as usize)
3532 .map(|LineWithInvisibles { line, .. }| line)
3533 {
3534 if let Some(ix) = line.index_for_x(x) {
3535 (ix as u32, px(0.))
3536 } else {
3537 (line.len as u32, px(0.).max(x - line.width))
3538 }
3539 } else {
3540 (0, x)
3541 };
3542
3543 let mut exact_unclipped = DisplayPoint::new(row, column);
3544 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3545 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3546
3547 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3548 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3549 PointForPosition {
3550 previous_valid,
3551 next_valid,
3552 exact_unclipped,
3553 column_overshoot_after_line_end,
3554 }
3555 }
3556}
3557
3558struct BlockLayout {
3559 row: u32,
3560 element: AnyElement,
3561 available_space: Size<AvailableSpace>,
3562 style: BlockStyle,
3563}
3564
3565fn layout_line(
3566 row: u32,
3567 snapshot: &EditorSnapshot,
3568 style: &EditorStyle,
3569 cx: &WindowContext,
3570) -> Result<ShapedLine> {
3571 let mut line = snapshot.line(row);
3572
3573 if line.len() > MAX_LINE_LEN {
3574 let mut len = MAX_LINE_LEN;
3575 while !line.is_char_boundary(len) {
3576 len -= 1;
3577 }
3578
3579 line.truncate(len);
3580 }
3581
3582 cx.text_system().shape_line(
3583 line.into(),
3584 style.text.font_size.to_pixels(cx.rem_size()),
3585 &[TextRun {
3586 len: snapshot.line_len(row) as usize,
3587 font: style.text.font(),
3588 color: Hsla::default(),
3589 background_color: None,
3590 underline: None,
3591 strikethrough: None,
3592 }],
3593 )
3594}
3595
3596pub struct CursorLayout {
3597 origin: gpui::Point<Pixels>,
3598 block_width: Pixels,
3599 line_height: Pixels,
3600 color: Hsla,
3601 shape: CursorShape,
3602 block_text: Option<ShapedLine>,
3603 cursor_name: Option<AnyElement>,
3604}
3605
3606#[derive(Debug)]
3607pub struct CursorName {
3608 string: SharedString,
3609 color: Hsla,
3610 is_top_row: bool,
3611}
3612
3613impl CursorLayout {
3614 pub fn new(
3615 origin: gpui::Point<Pixels>,
3616 block_width: Pixels,
3617 line_height: Pixels,
3618 color: Hsla,
3619 shape: CursorShape,
3620 block_text: Option<ShapedLine>,
3621 ) -> CursorLayout {
3622 CursorLayout {
3623 origin,
3624 block_width,
3625 line_height,
3626 color,
3627 shape,
3628 block_text,
3629 cursor_name: None,
3630 }
3631 }
3632
3633 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3634 Bounds {
3635 origin: self.origin + origin,
3636 size: size(self.block_width, self.line_height),
3637 }
3638 }
3639
3640 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3641 match self.shape {
3642 CursorShape::Bar => Bounds {
3643 origin: self.origin + origin,
3644 size: size(px(2.0), self.line_height),
3645 },
3646 CursorShape::Block | CursorShape::Hollow => Bounds {
3647 origin: self.origin + origin,
3648 size: size(self.block_width, self.line_height),
3649 },
3650 CursorShape::Underscore => Bounds {
3651 origin: self.origin
3652 + origin
3653 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3654 size: size(self.block_width, px(2.0)),
3655 },
3656 }
3657 }
3658
3659 pub fn layout(
3660 &mut self,
3661 origin: gpui::Point<Pixels>,
3662 cursor_name: Option<CursorName>,
3663 cx: &mut ElementContext,
3664 ) {
3665 if let Some(cursor_name) = cursor_name {
3666 let bounds = self.bounds(origin);
3667 let text_size = self.line_height / 1.5;
3668
3669 let name_origin = if cursor_name.is_top_row {
3670 point(bounds.right() - px(1.), bounds.top())
3671 } else {
3672 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3673 };
3674 let mut name_element = div()
3675 .bg(self.color)
3676 .text_size(text_size)
3677 .px_0p5()
3678 .line_height(text_size + px(2.))
3679 .text_color(cursor_name.color)
3680 .child(cursor_name.string.clone())
3681 .into_any_element();
3682
3683 name_element.layout(
3684 name_origin,
3685 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3686 cx,
3687 );
3688
3689 self.cursor_name = Some(name_element);
3690 }
3691 }
3692
3693 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3694 let bounds = self.bounds(origin);
3695
3696 //Draw background or border quad
3697 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3698 outline(bounds, self.color)
3699 } else {
3700 fill(bounds, self.color)
3701 };
3702
3703 if let Some(name) = &mut self.cursor_name {
3704 name.paint(cx);
3705 }
3706
3707 cx.paint_quad(cursor);
3708
3709 if let Some(block_text) = &self.block_text {
3710 block_text
3711 .paint(self.origin + origin, self.line_height, cx)
3712 .log_err();
3713 }
3714 }
3715
3716 pub fn shape(&self) -> CursorShape {
3717 self.shape
3718 }
3719}
3720
3721#[derive(Debug)]
3722pub struct HighlightedRange {
3723 pub start_y: Pixels,
3724 pub line_height: Pixels,
3725 pub lines: Vec<HighlightedRangeLine>,
3726 pub color: Hsla,
3727 pub corner_radius: Pixels,
3728}
3729
3730#[derive(Debug)]
3731pub struct HighlightedRangeLine {
3732 pub start_x: Pixels,
3733 pub end_x: Pixels,
3734}
3735
3736impl HighlightedRange {
3737 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3738 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3739 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3740 self.paint_lines(
3741 self.start_y + self.line_height,
3742 &self.lines[1..],
3743 bounds,
3744 cx,
3745 );
3746 } else {
3747 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3748 }
3749 }
3750
3751 fn paint_lines(
3752 &self,
3753 start_y: Pixels,
3754 lines: &[HighlightedRangeLine],
3755 _bounds: Bounds<Pixels>,
3756 cx: &mut ElementContext,
3757 ) {
3758 if lines.is_empty() {
3759 return;
3760 }
3761
3762 let first_line = lines.first().unwrap();
3763 let last_line = lines.last().unwrap();
3764
3765 let first_top_left = point(first_line.start_x, start_y);
3766 let first_top_right = point(first_line.end_x, start_y);
3767
3768 let curve_height = point(Pixels::ZERO, self.corner_radius);
3769 let curve_width = |start_x: Pixels, end_x: Pixels| {
3770 let max = (end_x - start_x) / 2.;
3771 let width = if max < self.corner_radius {
3772 max
3773 } else {
3774 self.corner_radius
3775 };
3776
3777 point(width, Pixels::ZERO)
3778 };
3779
3780 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3781 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3782 path.curve_to(first_top_right + curve_height, first_top_right);
3783
3784 let mut iter = lines.iter().enumerate().peekable();
3785 while let Some((ix, line)) = iter.next() {
3786 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3787
3788 if let Some((_, next_line)) = iter.peek() {
3789 let next_top_right = point(next_line.end_x, bottom_right.y);
3790
3791 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3792 Ordering::Equal => {
3793 path.line_to(bottom_right);
3794 }
3795 Ordering::Less => {
3796 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3797 path.line_to(bottom_right - curve_height);
3798 if self.corner_radius > Pixels::ZERO {
3799 path.curve_to(bottom_right - curve_width, bottom_right);
3800 }
3801 path.line_to(next_top_right + curve_width);
3802 if self.corner_radius > Pixels::ZERO {
3803 path.curve_to(next_top_right + curve_height, next_top_right);
3804 }
3805 }
3806 Ordering::Greater => {
3807 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3808 path.line_to(bottom_right - curve_height);
3809 if self.corner_radius > Pixels::ZERO {
3810 path.curve_to(bottom_right + curve_width, bottom_right);
3811 }
3812 path.line_to(next_top_right - curve_width);
3813 if self.corner_radius > Pixels::ZERO {
3814 path.curve_to(next_top_right + curve_height, next_top_right);
3815 }
3816 }
3817 }
3818 } else {
3819 let curve_width = curve_width(line.start_x, line.end_x);
3820 path.line_to(bottom_right - curve_height);
3821 if self.corner_radius > Pixels::ZERO {
3822 path.curve_to(bottom_right - curve_width, bottom_right);
3823 }
3824
3825 let bottom_left = point(line.start_x, bottom_right.y);
3826 path.line_to(bottom_left + curve_width);
3827 if self.corner_radius > Pixels::ZERO {
3828 path.curve_to(bottom_left - curve_height, bottom_left);
3829 }
3830 }
3831 }
3832
3833 if first_line.start_x > last_line.start_x {
3834 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3835 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3836 path.line_to(second_top_left + curve_height);
3837 if self.corner_radius > Pixels::ZERO {
3838 path.curve_to(second_top_left + curve_width, second_top_left);
3839 }
3840 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3841 path.line_to(first_bottom_left - curve_width);
3842 if self.corner_radius > Pixels::ZERO {
3843 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3844 }
3845 }
3846
3847 path.line_to(first_top_left + curve_height);
3848 if self.corner_radius > Pixels::ZERO {
3849 path.curve_to(first_top_left + top_curve_width, first_top_left);
3850 }
3851 path.line_to(first_top_right - top_curve_width);
3852
3853 cx.paint_path(path, self.color);
3854 }
3855}
3856
3857pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3858 (delta.pow(1.5) / 100.0).into()
3859}
3860
3861fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3862 (delta.pow(1.2) / 300.0).into()
3863}
3864
3865#[cfg(test)]
3866mod tests {
3867 use super::*;
3868 use crate::{
3869 display_map::{BlockDisposition, BlockProperties},
3870 editor_tests::{init_test, update_test_language_settings},
3871 Editor, MultiBuffer,
3872 };
3873 use gpui::TestAppContext;
3874 use language::language_settings;
3875 use log::info;
3876 use std::{num::NonZeroU32, sync::Arc};
3877 use util::test::sample_text;
3878
3879 #[gpui::test]
3880 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3881 init_test(cx, |_| {});
3882 let window = cx.add_window(|cx| {
3883 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3884 Editor::new(EditorMode::Full, buffer, None, cx)
3885 });
3886
3887 let editor = window.root(cx).unwrap();
3888 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3889 let element = EditorElement::new(&editor, style);
3890 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
3891
3892 let layouts = cx
3893 .update_window(*window, |_, cx| {
3894 cx.with_element_context(|cx| {
3895 element
3896 .layout_line_numbers(
3897 0..6,
3898 &Default::default(),
3899 Some(DisplayPoint::new(0, 0)),
3900 &snapshot,
3901 cx,
3902 )
3903 .0
3904 })
3905 })
3906 .unwrap();
3907 assert_eq!(layouts.len(), 6);
3908
3909 let relative_rows = window
3910 .update(cx, |editor, cx| {
3911 let snapshot = editor.snapshot(cx);
3912 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3913 })
3914 .unwrap();
3915 assert_eq!(relative_rows[&0], 3);
3916 assert_eq!(relative_rows[&1], 2);
3917 assert_eq!(relative_rows[&2], 1);
3918 // current line has no relative number
3919 assert_eq!(relative_rows[&4], 1);
3920 assert_eq!(relative_rows[&5], 2);
3921
3922 // works if cursor is before screen
3923 let relative_rows = window
3924 .update(cx, |editor, cx| {
3925 let snapshot = editor.snapshot(cx);
3926
3927 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3928 })
3929 .unwrap();
3930 assert_eq!(relative_rows.len(), 3);
3931 assert_eq!(relative_rows[&3], 2);
3932 assert_eq!(relative_rows[&4], 3);
3933 assert_eq!(relative_rows[&5], 4);
3934
3935 // works if cursor is after screen
3936 let relative_rows = window
3937 .update(cx, |editor, cx| {
3938 let snapshot = editor.snapshot(cx);
3939
3940 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3941 })
3942 .unwrap();
3943 assert_eq!(relative_rows.len(), 3);
3944 assert_eq!(relative_rows[&0], 5);
3945 assert_eq!(relative_rows[&1], 4);
3946 assert_eq!(relative_rows[&2], 3);
3947 }
3948
3949 #[gpui::test]
3950 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3951 init_test(cx, |_| {});
3952
3953 let window = cx.add_window(|cx| {
3954 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3955 Editor::new(EditorMode::Full, buffer, None, cx)
3956 });
3957 let editor = window.root(cx).unwrap();
3958 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3959 let mut element = EditorElement::new(&editor, style);
3960
3961 window
3962 .update(cx, |editor, cx| {
3963 editor.cursor_shape = CursorShape::Block;
3964 editor.change_selections(None, cx, |s| {
3965 s.select_ranges([
3966 Point::new(0, 0)..Point::new(1, 0),
3967 Point::new(3, 2)..Point::new(3, 3),
3968 Point::new(5, 6)..Point::new(6, 0),
3969 ]);
3970 });
3971 })
3972 .unwrap();
3973 let state = cx
3974 .update_window(window.into(), |_view, cx| {
3975 cx.with_element_context(|cx| {
3976 element.after_layout(
3977 Bounds {
3978 origin: point(px(500.), px(500.)),
3979 size: size(px(500.), px(500.)),
3980 },
3981 &mut (),
3982 cx,
3983 )
3984 })
3985 })
3986 .unwrap();
3987
3988 assert_eq!(state.selections.len(), 1);
3989 let local_selections = &state.selections[0].1;
3990 assert_eq!(local_selections.len(), 3);
3991 // moves cursor back one line
3992 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3993 assert_eq!(
3994 local_selections[0].range,
3995 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3996 );
3997
3998 // moves cursor back one column
3999 assert_eq!(
4000 local_selections[1].range,
4001 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
4002 );
4003 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
4004
4005 // leaves cursor on the max point
4006 assert_eq!(
4007 local_selections[2].range,
4008 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
4009 );
4010 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
4011
4012 // active lines does not include 1 (even though the range of the selection does)
4013 assert_eq!(
4014 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
4015 vec![0, 3, 5, 6]
4016 );
4017
4018 // multi-buffer support
4019 // in DisplayPoint coordinates, this is what we're dealing with:
4020 // 0: [[file
4021 // 1: header]]
4022 // 2: aaaaaa
4023 // 3: bbbbbb
4024 // 4: cccccc
4025 // 5:
4026 // 6: ...
4027 // 7: ffffff
4028 // 8: gggggg
4029 // 9: hhhhhh
4030 // 10:
4031 // 11: [[file
4032 // 12: header]]
4033 // 13: bbbbbb
4034 // 14: cccccc
4035 // 15: dddddd
4036 let window = cx.add_window(|cx| {
4037 let buffer = MultiBuffer::build_multi(
4038 [
4039 (
4040 &(sample_text(8, 6, 'a') + "\n"),
4041 vec![
4042 Point::new(0, 0)..Point::new(3, 0),
4043 Point::new(4, 0)..Point::new(7, 0),
4044 ],
4045 ),
4046 (
4047 &(sample_text(8, 6, 'a') + "\n"),
4048 vec![Point::new(1, 0)..Point::new(3, 0)],
4049 ),
4050 ],
4051 cx,
4052 );
4053 Editor::new(EditorMode::Full, buffer, None, cx)
4054 });
4055 let editor = window.root(cx).unwrap();
4056 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4057 let mut element = EditorElement::new(&editor, style);
4058 let _state = window.update(cx, |editor, cx| {
4059 editor.cursor_shape = CursorShape::Block;
4060 editor.change_selections(None, cx, |s| {
4061 s.select_display_ranges([
4062 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
4063 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
4064 ]);
4065 });
4066 });
4067
4068 let state = cx
4069 .update_window(window.into(), |_view, cx| {
4070 cx.with_element_context(|cx| {
4071 element.after_layout(
4072 Bounds {
4073 origin: point(px(500.), px(500.)),
4074 size: size(px(500.), px(500.)),
4075 },
4076 &mut (),
4077 cx,
4078 )
4079 })
4080 })
4081 .unwrap();
4082 assert_eq!(state.selections.len(), 1);
4083 let local_selections = &state.selections[0].1;
4084 assert_eq!(local_selections.len(), 2);
4085
4086 // moves cursor on excerpt boundary back a line
4087 // and doesn't allow selection to bleed through
4088 assert_eq!(
4089 local_selections[0].range,
4090 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
4091 );
4092 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
4093 // moves cursor on buffer boundary back two lines
4094 // and doesn't allow selection to bleed through
4095 assert_eq!(
4096 local_selections[1].range,
4097 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
4098 );
4099 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
4100 }
4101
4102 #[gpui::test]
4103 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
4104 init_test(cx, |_| {});
4105
4106 let window = cx.add_window(|cx| {
4107 let buffer = MultiBuffer::build_simple("", cx);
4108 Editor::new(EditorMode::Full, buffer, None, cx)
4109 });
4110 let editor = window.root(cx).unwrap();
4111 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4112 window
4113 .update(cx, |editor, cx| {
4114 editor.set_placeholder_text("hello", cx);
4115 editor.insert_blocks(
4116 [BlockProperties {
4117 style: BlockStyle::Fixed,
4118 disposition: BlockDisposition::Above,
4119 height: 3,
4120 position: Anchor::min(),
4121 render: Arc::new(|_| div().into_any()),
4122 }],
4123 None,
4124 cx,
4125 );
4126
4127 // Blur the editor so that it displays placeholder text.
4128 cx.blur();
4129 })
4130 .unwrap();
4131
4132 let mut element = EditorElement::new(&editor, style);
4133 let state = cx
4134 .update_window(window.into(), |_view, cx| {
4135 cx.with_element_context(|cx| {
4136 element.after_layout(
4137 Bounds {
4138 origin: point(px(500.), px(500.)),
4139 size: size(px(500.), px(500.)),
4140 },
4141 &mut (),
4142 cx,
4143 )
4144 })
4145 })
4146 .unwrap();
4147
4148 assert_eq!(state.position_map.line_layouts.len(), 4);
4149 assert_eq!(
4150 state
4151 .line_numbers
4152 .iter()
4153 .map(Option::is_some)
4154 .collect::<Vec<_>>(),
4155 &[false, false, false, true]
4156 );
4157 }
4158
4159 #[gpui::test]
4160 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
4161 const TAB_SIZE: u32 = 4;
4162
4163 let input_text = "\t \t|\t| a b";
4164 let expected_invisibles = vec![
4165 Invisible::Tab {
4166 line_start_offset: 0,
4167 },
4168 Invisible::Whitespace {
4169 line_offset: TAB_SIZE as usize,
4170 },
4171 Invisible::Tab {
4172 line_start_offset: TAB_SIZE as usize + 1,
4173 },
4174 Invisible::Tab {
4175 line_start_offset: TAB_SIZE as usize * 2 + 1,
4176 },
4177 Invisible::Whitespace {
4178 line_offset: TAB_SIZE as usize * 3 + 1,
4179 },
4180 Invisible::Whitespace {
4181 line_offset: TAB_SIZE as usize * 3 + 3,
4182 },
4183 ];
4184 assert_eq!(
4185 expected_invisibles.len(),
4186 input_text
4187 .chars()
4188 .filter(|initial_char| initial_char.is_whitespace())
4189 .count(),
4190 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4191 );
4192
4193 init_test(cx, |s| {
4194 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4195 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
4196 });
4197
4198 let actual_invisibles =
4199 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
4200
4201 assert_eq!(expected_invisibles, actual_invisibles);
4202 }
4203
4204 #[gpui::test]
4205 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
4206 init_test(cx, |s| {
4207 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4208 s.defaults.tab_size = NonZeroU32::new(4);
4209 });
4210
4211 for editor_mode_without_invisibles in [
4212 EditorMode::SingleLine,
4213 EditorMode::AutoHeight { max_lines: 100 },
4214 ] {
4215 let invisibles = collect_invisibles_from_new_editor(
4216 cx,
4217 editor_mode_without_invisibles,
4218 "\t\t\t| | a b",
4219 px(500.0),
4220 );
4221 assert!(invisibles.is_empty(),
4222 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4223 }
4224 }
4225
4226 #[gpui::test]
4227 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4228 let tab_size = 4;
4229 let input_text = "a\tbcd ".repeat(9);
4230 let repeated_invisibles = [
4231 Invisible::Tab {
4232 line_start_offset: 1,
4233 },
4234 Invisible::Whitespace {
4235 line_offset: tab_size as usize + 3,
4236 },
4237 Invisible::Whitespace {
4238 line_offset: tab_size as usize + 4,
4239 },
4240 Invisible::Whitespace {
4241 line_offset: tab_size as usize + 5,
4242 },
4243 ];
4244 let expected_invisibles = std::iter::once(repeated_invisibles)
4245 .cycle()
4246 .take(9)
4247 .flatten()
4248 .collect::<Vec<_>>();
4249 assert_eq!(
4250 expected_invisibles.len(),
4251 input_text
4252 .chars()
4253 .filter(|initial_char| initial_char.is_whitespace())
4254 .count(),
4255 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4256 );
4257 info!("Expected invisibles: {expected_invisibles:?}");
4258
4259 init_test(cx, |_| {});
4260
4261 // Put the same string with repeating whitespace pattern into editors of various size,
4262 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4263 let resize_step = 10.0;
4264 let mut editor_width = 200.0;
4265 while editor_width <= 1000.0 {
4266 update_test_language_settings(cx, |s| {
4267 s.defaults.tab_size = NonZeroU32::new(tab_size);
4268 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4269 s.defaults.preferred_line_length = Some(editor_width as u32);
4270 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4271 });
4272
4273 let actual_invisibles = collect_invisibles_from_new_editor(
4274 cx,
4275 EditorMode::Full,
4276 &input_text,
4277 px(editor_width),
4278 );
4279
4280 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4281 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4282 let mut i = 0;
4283 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4284 i = actual_index;
4285 match expected_invisibles.get(i) {
4286 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4287 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4288 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4289 _ => {
4290 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4291 }
4292 },
4293 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4294 }
4295 }
4296 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4297 assert!(
4298 missing_expected_invisibles.is_empty(),
4299 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4300 );
4301
4302 editor_width += resize_step;
4303 }
4304 }
4305
4306 fn collect_invisibles_from_new_editor(
4307 cx: &mut TestAppContext,
4308 editor_mode: EditorMode,
4309 input_text: &str,
4310 editor_width: Pixels,
4311 ) -> Vec<Invisible> {
4312 info!(
4313 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4314 editor_width.0
4315 );
4316 let window = cx.add_window(|cx| {
4317 let buffer = MultiBuffer::build_simple(&input_text, cx);
4318 Editor::new(editor_mode, buffer, None, cx)
4319 });
4320 let editor = window.root(cx).unwrap();
4321 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4322 let mut element = EditorElement::new(&editor, style);
4323 window
4324 .update(cx, |editor, cx| {
4325 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4326 editor.set_wrap_width(Some(editor_width), cx);
4327 })
4328 .unwrap();
4329 let layout_state = cx
4330 .update_window(window.into(), |_, cx| {
4331 cx.with_element_context(|cx| {
4332 element.after_layout(
4333 Bounds {
4334 origin: point(px(500.), px(500.)),
4335 size: size(px(500.), px(500.)),
4336 },
4337 &mut (),
4338 cx,
4339 )
4340 })
4341 })
4342 .unwrap();
4343
4344 layout_state
4345 .position_map
4346 .line_layouts
4347 .iter()
4348 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
4349 .cloned()
4350 .collect()
4351 }
4352}
4353
4354pub fn register_action<T: Action>(
4355 view: &View<Editor>,
4356 cx: &mut WindowContext,
4357 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4358) {
4359 let view = view.clone();
4360 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4361 let action = action.downcast_ref().unwrap();
4362 if phase == DispatchPhase::Bubble {
4363 view.update(cx, |editor, cx| {
4364 listener(editor, action, cx);
4365 })
4366 }
4367 })
4368}
4369
4370fn compute_auto_height_layout(
4371 editor: &mut Editor,
4372 max_lines: usize,
4373 max_line_number_width: Pixels,
4374 known_dimensions: Size<Option<Pixels>>,
4375 cx: &mut ViewContext<Editor>,
4376) -> Option<Size<Pixels>> {
4377 let width = known_dimensions.width?;
4378 if let Some(height) = known_dimensions.height {
4379 return Some(size(width, height));
4380 }
4381
4382 let style = editor.style.as_ref().unwrap();
4383 let font_id = cx.text_system().resolve_font(&style.text.font());
4384 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4385 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4386 let em_width = cx
4387 .text_system()
4388 .typographic_bounds(font_id, font_size, 'm')
4389 .unwrap()
4390 .size
4391 .width;
4392
4393 let mut snapshot = editor.snapshot(cx);
4394 let gutter_dimensions =
4395 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4396
4397 editor.gutter_width = gutter_dimensions.width;
4398 let text_width = width - gutter_dimensions.width;
4399 let overscroll = size(em_width, px(0.));
4400
4401 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4402 if editor.set_wrap_width(Some(editor_width), cx) {
4403 snapshot = editor.snapshot(cx);
4404 }
4405
4406 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4407 let height = scroll_height
4408 .max(line_height)
4409 .min(line_height * max_lines as f32);
4410
4411 Some(size(width, height))
4412}