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: ScrollbarLayout::BORDER_WIDTH,
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 let left = scrollbar_layout.hitbox.left();
2177 let right = scrollbar_layout.hitbox.right();
2178 let column_width =
2179 px(((right - left - ScrollbarLayout::BORDER_WIDTH).0 / 3.0).floor());
2180 if is_singleton && scrollbar_settings.selections {
2181 let start_anchor = Anchor::min();
2182 let end_anchor = Anchor::max();
2183 let background_ranges = self
2184 .editor
2185 .read(cx)
2186 .background_highlight_row_ranges::<BufferSearchHighlights>(
2187 start_anchor..end_anchor,
2188 &layout.position_map.snapshot,
2189 50000,
2190 );
2191 let left_x = left + ScrollbarLayout::BORDER_WIDTH + column_width;
2192 let right_x = left_x + column_width;
2193 for range in background_ranges {
2194 let (start_y, end_y) =
2195 scrollbar_layout.ys_for_marker(range.start().row(), range.end().row());
2196 let bounds =
2197 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2198 cx.paint_quad(quad(
2199 bounds,
2200 Corners::default(),
2201 cx.theme().status().info,
2202 Edges::default(),
2203 cx.theme().colors().scrollbar_thumb_border,
2204 ));
2205 }
2206 }
2207
2208 if is_singleton && scrollbar_settings.symbols_selections {
2209 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
2210 Anchor::min()..Anchor::max(),
2211 &layout.position_map.snapshot,
2212 cx.theme().colors(),
2213 );
2214 let left_x = left + ScrollbarLayout::BORDER_WIDTH + column_width;
2215 let right_x = left_x + column_width;
2216 for hunk in selection_ranges {
2217 let start_display = Point::new(hunk.0.start.row(), 0)
2218 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2219 let end_display = Point::new(hunk.0.end.row(), 0)
2220 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2221 let (start_y, end_y) =
2222 scrollbar_layout.ys_for_marker(start_display.row(), end_display.row());
2223 let bounds =
2224 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2225 cx.paint_quad(quad(
2226 bounds,
2227 Corners::default(),
2228 cx.theme().status().info,
2229 Edges::default(),
2230 cx.theme().colors().scrollbar_thumb_border,
2231 ));
2232 }
2233 }
2234
2235 if is_singleton && scrollbar_settings.git_diff {
2236 let left_x = left + ScrollbarLayout::BORDER_WIDTH;
2237 let right_x = left_x + column_width;
2238 for hunk in layout
2239 .position_map
2240 .snapshot
2241 .buffer_snapshot
2242 .git_diff_hunks_in_range(0..layout.max_row)
2243 {
2244 let start_display_row = Point::new(hunk.associated_range.start, 0)
2245 .to_display_point(&layout.position_map.snapshot.display_snapshot)
2246 .row();
2247 let mut end_display_row = Point::new(hunk.associated_range.end, 0)
2248 .to_display_point(&layout.position_map.snapshot.display_snapshot)
2249 .row();
2250 if end_display_row != start_display_row {
2251 end_display_row -= 1;
2252 }
2253 let (start_y, end_y) =
2254 scrollbar_layout.ys_for_marker(start_display_row, end_display_row);
2255 let bounds =
2256 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2257 let color = match hunk.status() {
2258 DiffHunkStatus::Added => cx.theme().status().created,
2259 DiffHunkStatus::Modified => cx.theme().status().modified,
2260 DiffHunkStatus::Removed => cx.theme().status().deleted,
2261 };
2262 cx.paint_quad(quad(
2263 bounds,
2264 Corners::default(),
2265 color,
2266 Edges::default(),
2267 cx.theme().colors().scrollbar_thumb_border,
2268 ));
2269 }
2270 }
2271
2272 if is_singleton && scrollbar_settings.diagnostics {
2273 let max_point = layout
2274 .position_map
2275 .snapshot
2276 .display_snapshot
2277 .buffer_snapshot
2278 .max_point();
2279
2280 let diagnostics = layout
2281 .position_map
2282 .snapshot
2283 .buffer_snapshot
2284 .diagnostics_in_range::<_, Point>(Point::zero()..max_point, false)
2285 // We want to sort by severity, in order to paint the most severe diagnostics last.
2286 .sorted_by_key(|diagnostic| {
2287 std::cmp::Reverse(diagnostic.diagnostic.severity)
2288 });
2289
2290 let left_x = left + ScrollbarLayout::BORDER_WIDTH + 2.0 * column_width;
2291 for diagnostic in diagnostics {
2292 let start_display = diagnostic
2293 .range
2294 .start
2295 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2296 let end_display = diagnostic
2297 .range
2298 .end
2299 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2300 let (start_y, end_y) =
2301 scrollbar_layout.ys_for_marker(start_display.row(), end_display.row());
2302 let bounds =
2303 Bounds::from_corners(point(left_x, start_y), point(right, end_y));
2304 let color = match diagnostic.diagnostic.severity {
2305 DiagnosticSeverity::ERROR => cx.theme().status().error,
2306 DiagnosticSeverity::WARNING => cx.theme().status().warning,
2307 DiagnosticSeverity::INFORMATION => cx.theme().status().info,
2308 _ => cx.theme().status().hint,
2309 };
2310 cx.paint_quad(quad(
2311 bounds,
2312 Corners::default(),
2313 color,
2314 Edges::default(),
2315 cx.theme().colors().scrollbar_thumb_border,
2316 ));
2317 }
2318 }
2319
2320 cx.paint_quad(quad(
2321 thumb_bounds,
2322 Corners::default(),
2323 cx.theme().colors().scrollbar_thumb_background,
2324 Edges {
2325 top: Pixels::ZERO,
2326 right: Pixels::ZERO,
2327 bottom: Pixels::ZERO,
2328 left: ScrollbarLayout::BORDER_WIDTH,
2329 },
2330 cx.theme().colors().scrollbar_thumb_border,
2331 ));
2332 });
2333 }
2334
2335 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
2336
2337 let scroll_height = scrollbar_layout.scroll_height;
2338 let height = scrollbar_layout.height;
2339 let row_range = scrollbar_layout.visible_row_range.clone();
2340
2341 cx.on_mouse_event({
2342 let editor = self.editor.clone();
2343 let hitbox = scrollbar_layout.hitbox.clone();
2344 let mut mouse_position = cx.mouse_position();
2345 move |event: &MouseMoveEvent, phase, cx| {
2346 if phase == DispatchPhase::Capture {
2347 return;
2348 }
2349
2350 editor.update(cx, |editor, cx| {
2351 if event.pressed_button == Some(MouseButton::Left)
2352 && editor.scroll_manager.is_dragging_scrollbar()
2353 {
2354 let y = mouse_position.y;
2355 let new_y = event.position.y;
2356 if (hitbox.top()..hitbox.bottom()).contains(&y) {
2357 let mut position = editor.scroll_position(cx);
2358 position.y += (new_y - y) * scroll_height / height;
2359 if position.y < 0.0 {
2360 position.y = 0.0;
2361 }
2362 editor.set_scroll_position(position, cx);
2363 }
2364
2365 mouse_position = event.position;
2366 cx.stop_propagation();
2367 } else {
2368 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2369 if hitbox.is_hovered(cx) {
2370 editor.scroll_manager.show_scrollbar(cx);
2371 }
2372 }
2373 })
2374 }
2375 });
2376
2377 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
2378 cx.on_mouse_event({
2379 let editor = self.editor.clone();
2380 move |_: &MouseUpEvent, phase, cx| {
2381 if phase == DispatchPhase::Capture {
2382 return;
2383 }
2384
2385 editor.update(cx, |editor, cx| {
2386 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2387 cx.stop_propagation();
2388 });
2389 }
2390 });
2391 } else {
2392 cx.on_mouse_event({
2393 let editor = self.editor.clone();
2394 let hitbox = scrollbar_layout.hitbox.clone();
2395 move |event: &MouseDownEvent, phase, cx| {
2396 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
2397 return;
2398 }
2399
2400 editor.update(cx, |editor, cx| {
2401 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
2402
2403 let y = event.position.y;
2404 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
2405 let center_row =
2406 ((y - hitbox.top()) * scroll_height / height).round() as u32;
2407 let top_row = center_row
2408 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
2409 let mut position = editor.scroll_position(cx);
2410 position.y = top_row as f32;
2411 editor.set_scroll_position(position, cx);
2412 } else {
2413 editor.scroll_manager.show_scrollbar(cx);
2414 }
2415
2416 cx.stop_propagation();
2417 });
2418 }
2419 });
2420 }
2421 }
2422
2423 #[allow(clippy::too_many_arguments)]
2424 fn paint_highlighted_range(
2425 &self,
2426 range: Range<DisplayPoint>,
2427 color: Hsla,
2428 corner_radius: Pixels,
2429 line_end_overshoot: Pixels,
2430 layout: &EditorLayout,
2431 cx: &mut ElementContext,
2432 ) {
2433 let start_row = layout.visible_display_row_range.start;
2434 let end_row = layout.visible_display_row_range.end;
2435 if range.start != range.end {
2436 let row_range = if range.end.column() == 0 {
2437 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
2438 } else {
2439 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
2440 };
2441
2442 let highlighted_range = HighlightedRange {
2443 color,
2444 line_height: layout.position_map.line_height,
2445 corner_radius,
2446 start_y: layout.content_origin.y
2447 + row_range.start as f32 * layout.position_map.line_height
2448 - layout.position_map.scroll_pixel_position.y,
2449 lines: row_range
2450 .into_iter()
2451 .map(|row| {
2452 let line_layout =
2453 &layout.position_map.line_layouts[(row - start_row) as usize].line;
2454 HighlightedRangeLine {
2455 start_x: if row == range.start.row() {
2456 layout.content_origin.x
2457 + line_layout.x_for_index(range.start.column() as usize)
2458 - layout.position_map.scroll_pixel_position.x
2459 } else {
2460 layout.content_origin.x
2461 - layout.position_map.scroll_pixel_position.x
2462 },
2463 end_x: if row == range.end.row() {
2464 layout.content_origin.x
2465 + line_layout.x_for_index(range.end.column() as usize)
2466 - layout.position_map.scroll_pixel_position.x
2467 } else {
2468 layout.content_origin.x + line_layout.width + line_end_overshoot
2469 - layout.position_map.scroll_pixel_position.x
2470 },
2471 }
2472 })
2473 .collect(),
2474 };
2475
2476 highlighted_range.paint(layout.text_hitbox.bounds, cx);
2477 }
2478 }
2479
2480 fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2481 if layout.folds.is_empty() {
2482 return;
2483 }
2484
2485 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2486 let fold_corner_radius = 0.15 * layout.position_map.line_height;
2487 for mut fold in mem::take(&mut layout.folds) {
2488 fold.hover_element.paint(cx);
2489
2490 let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
2491 let fold_background = if hover_element.interactivity().active.unwrap() {
2492 cx.theme().colors().ghost_element_active
2493 } else if hover_element.interactivity().hovered.unwrap() {
2494 cx.theme().colors().ghost_element_hover
2495 } else {
2496 cx.theme().colors().ghost_element_background
2497 };
2498
2499 self.paint_highlighted_range(
2500 fold.display_range.clone(),
2501 fold_background,
2502 fold_corner_radius,
2503 fold_corner_radius * 2.,
2504 layout,
2505 cx,
2506 );
2507 }
2508 })
2509 }
2510
2511 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2512 for mut block in layout.blocks.drain(..) {
2513 block.element.paint(cx);
2514 }
2515 }
2516
2517 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2518 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
2519 mouse_context_menu.paint(cx);
2520 }
2521 }
2522
2523 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2524 cx.on_mouse_event({
2525 let position_map = layout.position_map.clone();
2526 let editor = self.editor.clone();
2527 let hitbox = layout.hitbox.clone();
2528 let mut delta = ScrollDelta::default();
2529
2530 move |event: &ScrollWheelEvent, phase, cx| {
2531 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
2532 delta = delta.coalesce(event.delta);
2533 editor.update(cx, |editor, cx| {
2534 let position_map: &PositionMap = &position_map;
2535
2536 let line_height = position_map.line_height;
2537 let max_glyph_width = position_map.em_width;
2538 let (delta, axis) = match delta {
2539 gpui::ScrollDelta::Pixels(mut pixels) => {
2540 //Trackpad
2541 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2542 (pixels, axis)
2543 }
2544
2545 gpui::ScrollDelta::Lines(lines) => {
2546 //Not trackpad
2547 let pixels =
2548 point(lines.x * max_glyph_width, lines.y * line_height);
2549 (pixels, None)
2550 }
2551 };
2552
2553 let scroll_position = position_map.snapshot.scroll_position();
2554 let x = (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width;
2555 let y = (scroll_position.y * line_height - delta.y) / line_height;
2556 let scroll_position =
2557 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2558 editor.scroll(scroll_position, axis, cx);
2559 cx.stop_propagation();
2560 });
2561 }
2562 }
2563 });
2564 }
2565
2566 fn paint_mouse_listeners(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2567 self.paint_scroll_wheel_listener(layout, cx);
2568
2569 cx.on_mouse_event({
2570 let position_map = layout.position_map.clone();
2571 let editor = self.editor.clone();
2572 let text_hitbox = layout.text_hitbox.clone();
2573 let gutter_hitbox = layout.gutter_hitbox.clone();
2574
2575 move |event: &MouseDownEvent, phase, cx| {
2576 if phase == DispatchPhase::Bubble {
2577 match event.button {
2578 MouseButton::Left => editor.update(cx, |editor, cx| {
2579 Self::mouse_left_down(
2580 editor,
2581 event,
2582 &position_map,
2583 &text_hitbox,
2584 &gutter_hitbox,
2585 cx,
2586 );
2587 }),
2588 MouseButton::Right => editor.update(cx, |editor, cx| {
2589 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
2590 }),
2591 _ => {}
2592 };
2593 }
2594 }
2595 });
2596
2597 cx.on_mouse_event({
2598 let editor = self.editor.clone();
2599 let position_map = layout.position_map.clone();
2600 let text_hitbox = layout.text_hitbox.clone();
2601
2602 move |event: &MouseUpEvent, phase, cx| {
2603 if phase == DispatchPhase::Bubble {
2604 editor.update(cx, |editor, cx| {
2605 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
2606 });
2607 }
2608 }
2609 });
2610 cx.on_mouse_event({
2611 let position_map = layout.position_map.clone();
2612 let editor = self.editor.clone();
2613 let text_hitbox = layout.text_hitbox.clone();
2614 let gutter_hitbox = layout.gutter_hitbox.clone();
2615
2616 move |event: &MouseMoveEvent, phase, cx| {
2617 if phase == DispatchPhase::Bubble {
2618 editor.update(cx, |editor, cx| {
2619 if event.pressed_button == Some(MouseButton::Left) {
2620 Self::mouse_dragged(
2621 editor,
2622 event,
2623 &position_map,
2624 text_hitbox.bounds,
2625 cx,
2626 )
2627 }
2628
2629 Self::mouse_moved(
2630 editor,
2631 event,
2632 &position_map,
2633 &text_hitbox,
2634 &gutter_hitbox,
2635 cx,
2636 )
2637 });
2638 }
2639 }
2640 });
2641 }
2642
2643 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
2644 bounds.upper_right().x - self.style.scrollbar_width
2645 }
2646
2647 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
2648 let style = &self.style;
2649 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2650 let layout = cx
2651 .text_system()
2652 .shape_line(
2653 SharedString::from(" ".repeat(column)),
2654 font_size,
2655 &[TextRun {
2656 len: column,
2657 font: style.text.font(),
2658 color: Hsla::default(),
2659 background_color: None,
2660 underline: None,
2661 strikethrough: None,
2662 }],
2663 )
2664 .unwrap();
2665
2666 layout.width
2667 }
2668
2669 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
2670 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
2671 self.column_pixels(digit_count, cx)
2672 }
2673}
2674
2675#[derive(Debug)]
2676pub(crate) struct LineWithInvisibles {
2677 pub line: ShapedLine,
2678 invisibles: Vec<Invisible>,
2679}
2680
2681impl LineWithInvisibles {
2682 fn from_chunks<'a>(
2683 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2684 text_style: &TextStyle,
2685 max_line_len: usize,
2686 max_line_count: usize,
2687 line_number_layouts: &[Option<ShapedLine>],
2688 editor_mode: EditorMode,
2689 cx: &WindowContext,
2690 ) -> Vec<Self> {
2691 let mut layouts = Vec::with_capacity(max_line_count);
2692 let mut line = String::new();
2693 let mut invisibles = Vec::new();
2694 let mut styles = Vec::new();
2695 let mut non_whitespace_added = false;
2696 let mut row = 0;
2697 let mut line_exceeded_max_len = false;
2698 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2699
2700 for highlighted_chunk in chunks.chain([HighlightedChunk {
2701 chunk: "\n",
2702 style: None,
2703 is_tab: false,
2704 }]) {
2705 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2706 if ix > 0 {
2707 let shaped_line = cx
2708 .text_system()
2709 .shape_line(line.clone().into(), font_size, &styles)
2710 .unwrap();
2711 layouts.push(Self {
2712 line: shaped_line,
2713 invisibles: std::mem::take(&mut invisibles),
2714 });
2715
2716 line.clear();
2717 styles.clear();
2718 row += 1;
2719 line_exceeded_max_len = false;
2720 non_whitespace_added = false;
2721 if row == max_line_count {
2722 return layouts;
2723 }
2724 }
2725
2726 if !line_chunk.is_empty() && !line_exceeded_max_len {
2727 let text_style = if let Some(style) = highlighted_chunk.style {
2728 Cow::Owned(text_style.clone().highlight(style))
2729 } else {
2730 Cow::Borrowed(text_style)
2731 };
2732
2733 if line.len() + line_chunk.len() > max_line_len {
2734 let mut chunk_len = max_line_len - line.len();
2735 while !line_chunk.is_char_boundary(chunk_len) {
2736 chunk_len -= 1;
2737 }
2738 line_chunk = &line_chunk[..chunk_len];
2739 line_exceeded_max_len = true;
2740 }
2741
2742 styles.push(TextRun {
2743 len: line_chunk.len(),
2744 font: text_style.font(),
2745 color: text_style.color,
2746 background_color: text_style.background_color,
2747 underline: text_style.underline,
2748 strikethrough: text_style.strikethrough,
2749 });
2750
2751 if editor_mode == EditorMode::Full {
2752 // Line wrap pads its contents with fake whitespaces,
2753 // avoid printing them
2754 let inside_wrapped_string = line_number_layouts
2755 .get(row)
2756 .and_then(|layout| layout.as_ref())
2757 .is_none();
2758 if highlighted_chunk.is_tab {
2759 if non_whitespace_added || !inside_wrapped_string {
2760 invisibles.push(Invisible::Tab {
2761 line_start_offset: line.len(),
2762 });
2763 }
2764 } else {
2765 invisibles.extend(
2766 line_chunk
2767 .chars()
2768 .enumerate()
2769 .filter(|(_, line_char)| {
2770 let is_whitespace = line_char.is_whitespace();
2771 non_whitespace_added |= !is_whitespace;
2772 is_whitespace
2773 && (non_whitespace_added || !inside_wrapped_string)
2774 })
2775 .map(|(whitespace_index, _)| Invisible::Whitespace {
2776 line_offset: line.len() + whitespace_index,
2777 }),
2778 )
2779 }
2780 }
2781
2782 line.push_str(line_chunk);
2783 }
2784 }
2785 }
2786
2787 layouts
2788 }
2789
2790 fn draw(
2791 &self,
2792 layout: &EditorLayout,
2793 row: u32,
2794 content_origin: gpui::Point<Pixels>,
2795 whitespace_setting: ShowWhitespaceSetting,
2796 selection_ranges: &[Range<DisplayPoint>],
2797 cx: &mut ElementContext,
2798 ) {
2799 let line_height = layout.position_map.line_height;
2800 let line_y =
2801 line_height * (row as f32 - layout.position_map.scroll_pixel_position.y / line_height);
2802
2803 self.line
2804 .paint(
2805 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y),
2806 line_height,
2807 cx,
2808 )
2809 .log_err();
2810
2811 self.draw_invisibles(
2812 &selection_ranges,
2813 layout,
2814 content_origin,
2815 line_y,
2816 row,
2817 line_height,
2818 whitespace_setting,
2819 cx,
2820 );
2821 }
2822
2823 #[allow(clippy::too_many_arguments)]
2824 fn draw_invisibles(
2825 &self,
2826 selection_ranges: &[Range<DisplayPoint>],
2827 layout: &EditorLayout,
2828 content_origin: gpui::Point<Pixels>,
2829 line_y: Pixels,
2830 row: u32,
2831 line_height: Pixels,
2832 whitespace_setting: ShowWhitespaceSetting,
2833 cx: &mut ElementContext,
2834 ) {
2835 let allowed_invisibles_regions = match whitespace_setting {
2836 ShowWhitespaceSetting::None => return,
2837 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2838 ShowWhitespaceSetting::All => None,
2839 };
2840
2841 for invisible in &self.invisibles {
2842 let (&token_offset, invisible_symbol) = match invisible {
2843 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2844 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2845 };
2846
2847 let x_offset = self.line.x_for_index(token_offset);
2848 let invisible_offset =
2849 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2850 let origin = content_origin
2851 + gpui::point(
2852 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
2853 line_y,
2854 );
2855
2856 if let Some(allowed_regions) = allowed_invisibles_regions {
2857 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2858 if !allowed_regions
2859 .iter()
2860 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2861 {
2862 continue;
2863 }
2864 }
2865 invisible_symbol.paint(origin, line_height, cx).log_err();
2866 }
2867 }
2868}
2869
2870#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2871enum Invisible {
2872 Tab { line_start_offset: usize },
2873 Whitespace { line_offset: usize },
2874}
2875
2876impl Element for EditorElement {
2877 type BeforeLayout = ();
2878 type AfterLayout = EditorLayout;
2879
2880 fn before_layout(&mut self, cx: &mut ElementContext) -> (gpui::LayoutId, ()) {
2881 self.editor.update(cx, |editor, cx| {
2882 editor.set_style(self.style.clone(), cx);
2883
2884 let layout_id = match editor.mode {
2885 EditorMode::SingleLine => {
2886 let rem_size = cx.rem_size();
2887 let mut style = Style::default();
2888 style.size.width = relative(1.).into();
2889 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2890 cx.with_element_context(|cx| cx.request_layout(&style, None))
2891 }
2892 EditorMode::AutoHeight { max_lines } => {
2893 let editor_handle = cx.view().clone();
2894 let max_line_number_width =
2895 self.max_line_number_width(&editor.snapshot(cx), cx);
2896 cx.with_element_context(|cx| {
2897 cx.request_measured_layout(
2898 Style::default(),
2899 move |known_dimensions, _, cx| {
2900 editor_handle
2901 .update(cx, |editor, cx| {
2902 compute_auto_height_layout(
2903 editor,
2904 max_lines,
2905 max_line_number_width,
2906 known_dimensions,
2907 cx,
2908 )
2909 })
2910 .unwrap_or_default()
2911 },
2912 )
2913 })
2914 }
2915 EditorMode::Full => {
2916 let mut style = Style::default();
2917 style.size.width = relative(1.).into();
2918 style.size.height = relative(1.).into();
2919 cx.with_element_context(|cx| cx.request_layout(&style, None))
2920 }
2921 };
2922
2923 (layout_id, ())
2924 })
2925 }
2926
2927 fn after_layout(
2928 &mut self,
2929 bounds: Bounds<Pixels>,
2930 _: &mut Self::BeforeLayout,
2931 cx: &mut ElementContext,
2932 ) -> Self::AfterLayout {
2933 let text_style = TextStyleRefinement {
2934 font_size: Some(self.style.text.font_size),
2935 line_height: Some(self.style.text.line_height),
2936 ..Default::default()
2937 };
2938 cx.with_text_style(Some(text_style), |cx| {
2939 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2940 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
2941 let style = self.style.clone();
2942
2943 let font_id = cx.text_system().resolve_font(&style.text.font());
2944 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2945 let line_height = style.text.line_height_in_pixels(cx.rem_size());
2946 let em_width = cx
2947 .text_system()
2948 .typographic_bounds(font_id, font_size, 'm')
2949 .unwrap()
2950 .size
2951 .width;
2952 let em_advance = cx
2953 .text_system()
2954 .advance(font_id, font_size, 'm')
2955 .unwrap()
2956 .width;
2957
2958 let gutter_dimensions = snapshot.gutter_dimensions(
2959 font_id,
2960 font_size,
2961 em_width,
2962 self.max_line_number_width(&snapshot, cx),
2963 cx,
2964 );
2965 let text_width = bounds.size.width - gutter_dimensions.width;
2966 let overscroll = size(em_width, px(0.));
2967
2968 snapshot = self.editor.update(cx, |editor, cx| {
2969 editor.gutter_width = gutter_dimensions.width;
2970 editor.set_visible_line_count(bounds.size.height / line_height, cx);
2971
2972 let editor_width =
2973 text_width - gutter_dimensions.margin - overscroll.width - em_width;
2974 let wrap_width = match editor.soft_wrap_mode(cx) {
2975 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2976 SoftWrap::EditorWidth => editor_width,
2977 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2978 };
2979
2980 if editor.set_wrap_width(Some(wrap_width), cx) {
2981 editor.snapshot(cx)
2982 } else {
2983 snapshot
2984 }
2985 });
2986
2987 let wrap_guides = self
2988 .editor
2989 .read(cx)
2990 .wrap_guides(cx)
2991 .iter()
2992 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2993 .collect::<SmallVec<[_; 2]>>();
2994
2995 let hitbox = cx.insert_hitbox(bounds, false);
2996 let gutter_hitbox = cx.insert_hitbox(
2997 Bounds {
2998 origin: bounds.origin,
2999 size: size(gutter_dimensions.width, bounds.size.height),
3000 },
3001 false,
3002 );
3003 let text_hitbox = cx.insert_hitbox(
3004 Bounds {
3005 origin: gutter_hitbox.upper_right(),
3006 size: size(text_width, bounds.size.height),
3007 },
3008 false,
3009 );
3010 // Offset the content_bounds from the text_bounds by the gutter margin (which
3011 // is roughly half a character wide) to make hit testing work more like how we want.
3012 let content_origin =
3013 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
3014
3015 let autoscroll_horizontally = self.editor.update(cx, |editor, cx| {
3016 let autoscroll_horizontally =
3017 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
3018 snapshot = editor.snapshot(cx);
3019 autoscroll_horizontally
3020 });
3021
3022 let mut scroll_position = snapshot.scroll_position();
3023 // The scroll position is a fractional point, the whole number of which represents
3024 // the top of the window in terms of display rows.
3025 let start_row = scroll_position.y as u32;
3026 let height_in_lines = bounds.size.height / line_height;
3027 let max_row = snapshot.max_point().row();
3028
3029 // Add 1 to ensure selections bleed off screen
3030 let end_row =
3031 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
3032
3033 let start_anchor = if start_row == 0 {
3034 Anchor::min()
3035 } else {
3036 snapshot.buffer_snapshot.anchor_before(
3037 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
3038 )
3039 };
3040 let end_anchor = if end_row > max_row {
3041 Anchor::max()
3042 } else {
3043 snapshot.buffer_snapshot.anchor_before(
3044 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
3045 )
3046 };
3047
3048 let highlighted_rows = self
3049 .editor
3050 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
3051 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
3052 start_anchor..end_anchor,
3053 &snapshot.display_snapshot,
3054 cx.theme().colors(),
3055 );
3056
3057 let redacted_ranges = self.editor.read(cx).redacted_ranges(
3058 start_anchor..end_anchor,
3059 &snapshot.display_snapshot,
3060 cx,
3061 );
3062
3063 let (selections, active_rows, newest_selection_head) = self.layout_selections(
3064 start_anchor,
3065 end_anchor,
3066 &snapshot,
3067 start_row,
3068 end_row,
3069 cx,
3070 );
3071
3072 let (line_numbers, fold_statuses) = self.layout_line_numbers(
3073 start_row..end_row,
3074 &active_rows,
3075 newest_selection_head,
3076 &snapshot,
3077 cx,
3078 );
3079
3080 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
3081
3082 let mut max_visible_line_width = Pixels::ZERO;
3083 let line_layouts =
3084 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
3085 for line_with_invisibles in &line_layouts {
3086 if line_with_invisibles.line.width > max_visible_line_width {
3087 max_visible_line_width = line_with_invisibles.line.width;
3088 }
3089 }
3090
3091 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
3092 .unwrap()
3093 .width;
3094 let mut scroll_width =
3095 longest_line_width.max(max_visible_line_width) + overscroll.width;
3096 let mut blocks = self.build_blocks(
3097 start_row..end_row,
3098 &snapshot,
3099 &hitbox,
3100 &text_hitbox,
3101 &mut scroll_width,
3102 &gutter_dimensions,
3103 em_width,
3104 gutter_dimensions.width + gutter_dimensions.margin,
3105 line_height,
3106 &line_layouts,
3107 cx,
3108 );
3109
3110 let scroll_max = point(
3111 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
3112 max_row as f32,
3113 );
3114
3115 self.editor.update(cx, |editor, cx| {
3116 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3117
3118 let autoscrolled = if autoscroll_horizontally {
3119 editor.autoscroll_horizontally(
3120 start_row,
3121 text_hitbox.size.width,
3122 scroll_width,
3123 em_width,
3124 &line_layouts,
3125 cx,
3126 )
3127 } else {
3128 false
3129 };
3130
3131 if clamped || autoscrolled {
3132 snapshot = editor.snapshot(cx);
3133 scroll_position = snapshot.scroll_position();
3134 }
3135 });
3136
3137 let scroll_pixel_position = point(
3138 scroll_position.x * em_width,
3139 scroll_position.y * line_height,
3140 );
3141
3142 cx.with_element_id(Some("blocks"), |cx| {
3143 self.layout_blocks(
3144 &mut blocks,
3145 &hitbox,
3146 line_height,
3147 scroll_pixel_position,
3148 cx,
3149 );
3150 });
3151
3152 let cursors = self.layout_cursors(
3153 &snapshot,
3154 &selections,
3155 start_row..end_row,
3156 &line_layouts,
3157 &text_hitbox,
3158 content_origin,
3159 scroll_pixel_position,
3160 line_height,
3161 em_width,
3162 cx,
3163 );
3164
3165 let scrollbar_layout = self.layout_scrollbar(
3166 &snapshot,
3167 bounds,
3168 scroll_position,
3169 line_height,
3170 height_in_lines,
3171 cx,
3172 );
3173
3174 let folds = cx.with_element_id(Some("folds"), |cx| {
3175 self.layout_folds(
3176 &snapshot,
3177 content_origin,
3178 start_anchor..end_anchor,
3179 start_row..end_row,
3180 scroll_pixel_position,
3181 line_height,
3182 &line_layouts,
3183 cx,
3184 )
3185 });
3186
3187 let gutter_settings = EditorSettings::get_global(cx).gutter;
3188
3189 let mut context_menu_visible = false;
3190 let mut code_actions_indicator = None;
3191 if let Some(newest_selection_head) = newest_selection_head {
3192 if (start_row..end_row).contains(&newest_selection_head.row()) {
3193 context_menu_visible = self.layout_context_menu(
3194 line_height,
3195 &hitbox,
3196 &text_hitbox,
3197 content_origin,
3198 start_row,
3199 scroll_pixel_position,
3200 &line_layouts,
3201 newest_selection_head,
3202 cx,
3203 );
3204 if gutter_settings.code_actions {
3205 code_actions_indicator = self.layout_code_actions_indicator(
3206 line_height,
3207 newest_selection_head,
3208 scroll_pixel_position,
3209 &gutter_dimensions,
3210 &gutter_hitbox,
3211 cx,
3212 );
3213 }
3214 }
3215 }
3216
3217 if !context_menu_visible && !cx.has_active_drag() {
3218 self.layout_hover_popovers(
3219 &snapshot,
3220 &hitbox,
3221 &text_hitbox,
3222 start_row..end_row,
3223 content_origin,
3224 scroll_pixel_position,
3225 &line_layouts,
3226 line_height,
3227 em_width,
3228 cx,
3229 );
3230 }
3231
3232 let mouse_context_menu = self.layout_mouse_context_menu(cx);
3233
3234 let fold_indicators = if gutter_settings.folds {
3235 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
3236 self.layout_gutter_fold_indicators(
3237 fold_statuses,
3238 line_height,
3239 &gutter_dimensions,
3240 gutter_settings,
3241 scroll_pixel_position,
3242 &gutter_hitbox,
3243 cx,
3244 )
3245 })
3246 } else {
3247 Vec::new()
3248 };
3249
3250 let invisible_symbol_font_size = font_size / 2.;
3251 let tab_invisible = cx
3252 .text_system()
3253 .shape_line(
3254 "→".into(),
3255 invisible_symbol_font_size,
3256 &[TextRun {
3257 len: "→".len(),
3258 font: self.style.text.font(),
3259 color: cx.theme().colors().editor_invisible,
3260 background_color: None,
3261 underline: None,
3262 strikethrough: None,
3263 }],
3264 )
3265 .unwrap();
3266 let space_invisible = cx
3267 .text_system()
3268 .shape_line(
3269 "•".into(),
3270 invisible_symbol_font_size,
3271 &[TextRun {
3272 len: "•".len(),
3273 font: self.style.text.font(),
3274 color: cx.theme().colors().editor_invisible,
3275 background_color: None,
3276 underline: None,
3277 strikethrough: None,
3278 }],
3279 )
3280 .unwrap();
3281
3282 EditorLayout {
3283 mode: snapshot.mode,
3284 position_map: Arc::new(PositionMap {
3285 size: bounds.size,
3286 scroll_pixel_position,
3287 scroll_max,
3288 line_layouts,
3289 line_height,
3290 em_width,
3291 em_advance,
3292 snapshot,
3293 }),
3294 visible_display_row_range: start_row..end_row,
3295 wrap_guides,
3296 hitbox,
3297 text_hitbox,
3298 gutter_hitbox,
3299 gutter_dimensions,
3300 content_origin,
3301 scrollbar_layout,
3302 max_row,
3303 active_rows,
3304 highlighted_rows,
3305 highlighted_ranges,
3306 redacted_ranges,
3307 line_numbers,
3308 display_hunks,
3309 folds,
3310 blocks,
3311 cursors,
3312 selections,
3313 mouse_context_menu,
3314 code_actions_indicator,
3315 fold_indicators,
3316 tab_invisible,
3317 space_invisible,
3318 }
3319 })
3320 })
3321 }
3322
3323 fn paint(
3324 &mut self,
3325 bounds: Bounds<gpui::Pixels>,
3326 _: &mut Self::BeforeLayout,
3327 layout: &mut Self::AfterLayout,
3328 cx: &mut ElementContext,
3329 ) {
3330 let focus_handle = self.editor.focus_handle(cx);
3331 let key_context = self.editor.read(cx).key_context(cx);
3332 cx.set_focus_handle(&focus_handle);
3333 cx.set_key_context(key_context);
3334 cx.set_view_id(self.editor.entity_id());
3335 cx.handle_input(
3336 &focus_handle,
3337 ElementInputHandler::new(bounds, self.editor.clone()),
3338 );
3339 self.register_actions(cx);
3340 self.register_key_listeners(cx, layout);
3341
3342 let text_style = TextStyleRefinement {
3343 font_size: Some(self.style.text.font_size),
3344 line_height: Some(self.style.text.line_height),
3345 ..Default::default()
3346 };
3347 cx.with_text_style(Some(text_style), |cx| {
3348 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3349 self.paint_mouse_listeners(layout, cx);
3350
3351 self.paint_background(layout, cx);
3352 if layout.gutter_hitbox.size.width > Pixels::ZERO {
3353 self.paint_gutter(layout, cx);
3354 }
3355 self.paint_text(layout, cx);
3356
3357 if !layout.blocks.is_empty() {
3358 cx.with_element_id(Some("blocks"), |cx| {
3359 self.paint_blocks(layout, cx);
3360 });
3361 }
3362
3363 self.paint_scrollbar(layout, cx);
3364 self.paint_mouse_context_menu(layout, cx);
3365 });
3366 })
3367 }
3368}
3369
3370impl IntoElement for EditorElement {
3371 type Element = Self;
3372
3373 fn into_element(self) -> Self::Element {
3374 self
3375 }
3376}
3377
3378type BufferRow = u32;
3379
3380pub struct EditorLayout {
3381 position_map: Arc<PositionMap>,
3382 hitbox: Hitbox,
3383 text_hitbox: Hitbox,
3384 gutter_hitbox: Hitbox,
3385 gutter_dimensions: GutterDimensions,
3386 content_origin: gpui::Point<Pixels>,
3387 scrollbar_layout: Option<ScrollbarLayout>,
3388 mode: EditorMode,
3389 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3390 visible_display_row_range: Range<u32>,
3391 active_rows: BTreeMap<u32, bool>,
3392 highlighted_rows: BTreeMap<u32, Hsla>,
3393 line_numbers: Vec<Option<ShapedLine>>,
3394 display_hunks: Vec<DisplayDiffHunk>,
3395 folds: Vec<FoldLayout>,
3396 blocks: Vec<BlockLayout>,
3397 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3398 redacted_ranges: Vec<Range<DisplayPoint>>,
3399 cursors: Vec<CursorLayout>,
3400 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3401 max_row: u32,
3402 code_actions_indicator: Option<AnyElement>,
3403 fold_indicators: Vec<Option<AnyElement>>,
3404 mouse_context_menu: Option<AnyElement>,
3405 tab_invisible: ShapedLine,
3406 space_invisible: ShapedLine,
3407}
3408
3409impl EditorLayout {
3410 fn line_end_overshoot(&self) -> Pixels {
3411 0.15 * self.position_map.line_height
3412 }
3413}
3414
3415struct ScrollbarLayout {
3416 hitbox: Hitbox,
3417 visible_row_range: Range<f32>,
3418 visible: bool,
3419 height: Pixels,
3420 scroll_height: f32,
3421 first_row_y_offset: Pixels,
3422 row_height: Pixels,
3423}
3424
3425impl ScrollbarLayout {
3426 const BORDER_WIDTH: Pixels = px(1.0);
3427 const MIN_MARKER_HEIGHT: Pixels = px(2.0);
3428
3429 fn thumb_bounds(&self) -> Bounds<Pixels> {
3430 let thumb_top = self.y_for_row(self.visible_row_range.start) - self.first_row_y_offset;
3431 let thumb_bottom = self.y_for_row(self.visible_row_range.end) + self.first_row_y_offset;
3432 Bounds::from_corners(
3433 point(self.hitbox.left(), thumb_top),
3434 point(self.hitbox.right(), thumb_bottom),
3435 )
3436 }
3437
3438 fn y_for_row(&self, row: f32) -> Pixels {
3439 self.hitbox.top() + self.first_row_y_offset + row * self.row_height
3440 }
3441
3442 fn ys_for_marker(&self, start_row: u32, end_row: u32) -> (Pixels, Pixels) {
3443 let start_y = self.y_for_row(start_row as f32);
3444 let mut end_y = self.y_for_row((end_row + 1) as f32);
3445 if end_y - start_y < Self::MIN_MARKER_HEIGHT {
3446 end_y = start_y + Self::MIN_MARKER_HEIGHT;
3447 }
3448 (start_y, end_y)
3449 }
3450}
3451
3452struct FoldLayout {
3453 display_range: Range<DisplayPoint>,
3454 hover_element: AnyElement,
3455}
3456
3457struct PositionMap {
3458 size: Size<Pixels>,
3459 line_height: Pixels,
3460 scroll_pixel_position: gpui::Point<Pixels>,
3461 scroll_max: gpui::Point<f32>,
3462 em_width: Pixels,
3463 em_advance: Pixels,
3464 line_layouts: Vec<LineWithInvisibles>,
3465 snapshot: EditorSnapshot,
3466}
3467
3468#[derive(Debug, Copy, Clone)]
3469pub struct PointForPosition {
3470 pub previous_valid: DisplayPoint,
3471 pub next_valid: DisplayPoint,
3472 pub exact_unclipped: DisplayPoint,
3473 pub column_overshoot_after_line_end: u32,
3474}
3475
3476impl PointForPosition {
3477 pub fn as_valid(&self) -> Option<DisplayPoint> {
3478 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3479 Some(self.previous_valid)
3480 } else {
3481 None
3482 }
3483 }
3484}
3485
3486impl PositionMap {
3487 fn point_for_position(
3488 &self,
3489 text_bounds: Bounds<Pixels>,
3490 position: gpui::Point<Pixels>,
3491 ) -> PointForPosition {
3492 let scroll_position = self.snapshot.scroll_position();
3493 let position = position - text_bounds.origin;
3494 let y = position.y.max(px(0.)).min(self.size.height);
3495 let x = position.x + (scroll_position.x * self.em_width);
3496 let row = ((y / self.line_height) + scroll_position.y) as u32;
3497
3498 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3499 .line_layouts
3500 .get(row as usize - scroll_position.y as usize)
3501 .map(|LineWithInvisibles { line, .. }| line)
3502 {
3503 if let Some(ix) = line.index_for_x(x) {
3504 (ix as u32, px(0.))
3505 } else {
3506 (line.len as u32, px(0.).max(x - line.width))
3507 }
3508 } else {
3509 (0, x)
3510 };
3511
3512 let mut exact_unclipped = DisplayPoint::new(row, column);
3513 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3514 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3515
3516 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3517 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3518 PointForPosition {
3519 previous_valid,
3520 next_valid,
3521 exact_unclipped,
3522 column_overshoot_after_line_end,
3523 }
3524 }
3525}
3526
3527struct BlockLayout {
3528 row: u32,
3529 element: AnyElement,
3530 available_space: Size<AvailableSpace>,
3531 style: BlockStyle,
3532}
3533
3534fn layout_line(
3535 row: u32,
3536 snapshot: &EditorSnapshot,
3537 style: &EditorStyle,
3538 cx: &WindowContext,
3539) -> Result<ShapedLine> {
3540 let mut line = snapshot.line(row);
3541
3542 if line.len() > MAX_LINE_LEN {
3543 let mut len = MAX_LINE_LEN;
3544 while !line.is_char_boundary(len) {
3545 len -= 1;
3546 }
3547
3548 line.truncate(len);
3549 }
3550
3551 cx.text_system().shape_line(
3552 line.into(),
3553 style.text.font_size.to_pixels(cx.rem_size()),
3554 &[TextRun {
3555 len: snapshot.line_len(row) as usize,
3556 font: style.text.font(),
3557 color: Hsla::default(),
3558 background_color: None,
3559 underline: None,
3560 strikethrough: None,
3561 }],
3562 )
3563}
3564
3565pub struct CursorLayout {
3566 origin: gpui::Point<Pixels>,
3567 block_width: Pixels,
3568 line_height: Pixels,
3569 color: Hsla,
3570 shape: CursorShape,
3571 block_text: Option<ShapedLine>,
3572 cursor_name: Option<AnyElement>,
3573}
3574
3575#[derive(Debug)]
3576pub struct CursorName {
3577 string: SharedString,
3578 color: Hsla,
3579 is_top_row: bool,
3580}
3581
3582impl CursorLayout {
3583 pub fn new(
3584 origin: gpui::Point<Pixels>,
3585 block_width: Pixels,
3586 line_height: Pixels,
3587 color: Hsla,
3588 shape: CursorShape,
3589 block_text: Option<ShapedLine>,
3590 ) -> CursorLayout {
3591 CursorLayout {
3592 origin,
3593 block_width,
3594 line_height,
3595 color,
3596 shape,
3597 block_text,
3598 cursor_name: None,
3599 }
3600 }
3601
3602 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3603 Bounds {
3604 origin: self.origin + origin,
3605 size: size(self.block_width, self.line_height),
3606 }
3607 }
3608
3609 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3610 match self.shape {
3611 CursorShape::Bar => Bounds {
3612 origin: self.origin + origin,
3613 size: size(px(2.0), self.line_height),
3614 },
3615 CursorShape::Block | CursorShape::Hollow => Bounds {
3616 origin: self.origin + origin,
3617 size: size(self.block_width, self.line_height),
3618 },
3619 CursorShape::Underscore => Bounds {
3620 origin: self.origin
3621 + origin
3622 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3623 size: size(self.block_width, px(2.0)),
3624 },
3625 }
3626 }
3627
3628 pub fn layout(
3629 &mut self,
3630 origin: gpui::Point<Pixels>,
3631 cursor_name: Option<CursorName>,
3632 cx: &mut ElementContext,
3633 ) {
3634 if let Some(cursor_name) = cursor_name {
3635 let bounds = self.bounds(origin);
3636 let text_size = self.line_height / 1.5;
3637
3638 let name_origin = if cursor_name.is_top_row {
3639 point(bounds.right() - px(1.), bounds.top())
3640 } else {
3641 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3642 };
3643 let mut name_element = div()
3644 .bg(self.color)
3645 .text_size(text_size)
3646 .px_0p5()
3647 .line_height(text_size + px(2.))
3648 .text_color(cursor_name.color)
3649 .child(cursor_name.string.clone())
3650 .into_any_element();
3651
3652 name_element.layout(
3653 name_origin,
3654 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3655 cx,
3656 );
3657
3658 self.cursor_name = Some(name_element);
3659 }
3660 }
3661
3662 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3663 let bounds = self.bounds(origin);
3664
3665 //Draw background or border quad
3666 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3667 outline(bounds, self.color)
3668 } else {
3669 fill(bounds, self.color)
3670 };
3671
3672 if let Some(name) = &mut self.cursor_name {
3673 name.paint(cx);
3674 }
3675
3676 cx.paint_quad(cursor);
3677
3678 if let Some(block_text) = &self.block_text {
3679 block_text
3680 .paint(self.origin + origin, self.line_height, cx)
3681 .log_err();
3682 }
3683 }
3684
3685 pub fn shape(&self) -> CursorShape {
3686 self.shape
3687 }
3688}
3689
3690#[derive(Debug)]
3691pub struct HighlightedRange {
3692 pub start_y: Pixels,
3693 pub line_height: Pixels,
3694 pub lines: Vec<HighlightedRangeLine>,
3695 pub color: Hsla,
3696 pub corner_radius: Pixels,
3697}
3698
3699#[derive(Debug)]
3700pub struct HighlightedRangeLine {
3701 pub start_x: Pixels,
3702 pub end_x: Pixels,
3703}
3704
3705impl HighlightedRange {
3706 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3707 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3708 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3709 self.paint_lines(
3710 self.start_y + self.line_height,
3711 &self.lines[1..],
3712 bounds,
3713 cx,
3714 );
3715 } else {
3716 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3717 }
3718 }
3719
3720 fn paint_lines(
3721 &self,
3722 start_y: Pixels,
3723 lines: &[HighlightedRangeLine],
3724 _bounds: Bounds<Pixels>,
3725 cx: &mut ElementContext,
3726 ) {
3727 if lines.is_empty() {
3728 return;
3729 }
3730
3731 let first_line = lines.first().unwrap();
3732 let last_line = lines.last().unwrap();
3733
3734 let first_top_left = point(first_line.start_x, start_y);
3735 let first_top_right = point(first_line.end_x, start_y);
3736
3737 let curve_height = point(Pixels::ZERO, self.corner_radius);
3738 let curve_width = |start_x: Pixels, end_x: Pixels| {
3739 let max = (end_x - start_x) / 2.;
3740 let width = if max < self.corner_radius {
3741 max
3742 } else {
3743 self.corner_radius
3744 };
3745
3746 point(width, Pixels::ZERO)
3747 };
3748
3749 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3750 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3751 path.curve_to(first_top_right + curve_height, first_top_right);
3752
3753 let mut iter = lines.iter().enumerate().peekable();
3754 while let Some((ix, line)) = iter.next() {
3755 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3756
3757 if let Some((_, next_line)) = iter.peek() {
3758 let next_top_right = point(next_line.end_x, bottom_right.y);
3759
3760 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3761 Ordering::Equal => {
3762 path.line_to(bottom_right);
3763 }
3764 Ordering::Less => {
3765 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3766 path.line_to(bottom_right - curve_height);
3767 if self.corner_radius > Pixels::ZERO {
3768 path.curve_to(bottom_right - curve_width, bottom_right);
3769 }
3770 path.line_to(next_top_right + curve_width);
3771 if self.corner_radius > Pixels::ZERO {
3772 path.curve_to(next_top_right + curve_height, next_top_right);
3773 }
3774 }
3775 Ordering::Greater => {
3776 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3777 path.line_to(bottom_right - curve_height);
3778 if self.corner_radius > Pixels::ZERO {
3779 path.curve_to(bottom_right + curve_width, bottom_right);
3780 }
3781 path.line_to(next_top_right - curve_width);
3782 if self.corner_radius > Pixels::ZERO {
3783 path.curve_to(next_top_right + curve_height, next_top_right);
3784 }
3785 }
3786 }
3787 } else {
3788 let curve_width = curve_width(line.start_x, line.end_x);
3789 path.line_to(bottom_right - curve_height);
3790 if self.corner_radius > Pixels::ZERO {
3791 path.curve_to(bottom_right - curve_width, bottom_right);
3792 }
3793
3794 let bottom_left = point(line.start_x, bottom_right.y);
3795 path.line_to(bottom_left + curve_width);
3796 if self.corner_radius > Pixels::ZERO {
3797 path.curve_to(bottom_left - curve_height, bottom_left);
3798 }
3799 }
3800 }
3801
3802 if first_line.start_x > last_line.start_x {
3803 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3804 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3805 path.line_to(second_top_left + curve_height);
3806 if self.corner_radius > Pixels::ZERO {
3807 path.curve_to(second_top_left + curve_width, second_top_left);
3808 }
3809 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3810 path.line_to(first_bottom_left - curve_width);
3811 if self.corner_radius > Pixels::ZERO {
3812 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3813 }
3814 }
3815
3816 path.line_to(first_top_left + curve_height);
3817 if self.corner_radius > Pixels::ZERO {
3818 path.curve_to(first_top_left + top_curve_width, first_top_left);
3819 }
3820 path.line_to(first_top_right - top_curve_width);
3821
3822 cx.paint_path(path, self.color);
3823 }
3824}
3825
3826pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3827 (delta.pow(1.5) / 100.0).into()
3828}
3829
3830fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3831 (delta.pow(1.2) / 300.0).into()
3832}
3833
3834#[cfg(test)]
3835mod tests {
3836 use super::*;
3837 use crate::{
3838 display_map::{BlockDisposition, BlockProperties},
3839 editor_tests::{init_test, update_test_language_settings},
3840 Editor, MultiBuffer,
3841 };
3842 use gpui::TestAppContext;
3843 use language::language_settings;
3844 use log::info;
3845 use std::{num::NonZeroU32, sync::Arc};
3846 use util::test::sample_text;
3847
3848 #[gpui::test]
3849 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3850 init_test(cx, |_| {});
3851 let window = cx.add_window(|cx| {
3852 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3853 Editor::new(EditorMode::Full, buffer, None, cx)
3854 });
3855
3856 let editor = window.root(cx).unwrap();
3857 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3858 let element = EditorElement::new(&editor, style);
3859 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
3860
3861 let layouts = cx
3862 .update_window(*window, |_, cx| {
3863 cx.with_element_context(|cx| {
3864 element
3865 .layout_line_numbers(
3866 0..6,
3867 &Default::default(),
3868 Some(DisplayPoint::new(0, 0)),
3869 &snapshot,
3870 cx,
3871 )
3872 .0
3873 })
3874 })
3875 .unwrap();
3876 assert_eq!(layouts.len(), 6);
3877
3878 let relative_rows = window
3879 .update(cx, |editor, cx| {
3880 let snapshot = editor.snapshot(cx);
3881 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3882 })
3883 .unwrap();
3884 assert_eq!(relative_rows[&0], 3);
3885 assert_eq!(relative_rows[&1], 2);
3886 assert_eq!(relative_rows[&2], 1);
3887 // current line has no relative number
3888 assert_eq!(relative_rows[&4], 1);
3889 assert_eq!(relative_rows[&5], 2);
3890
3891 // works if cursor is before screen
3892 let relative_rows = window
3893 .update(cx, |editor, cx| {
3894 let snapshot = editor.snapshot(cx);
3895
3896 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3897 })
3898 .unwrap();
3899 assert_eq!(relative_rows.len(), 3);
3900 assert_eq!(relative_rows[&3], 2);
3901 assert_eq!(relative_rows[&4], 3);
3902 assert_eq!(relative_rows[&5], 4);
3903
3904 // works if cursor is after screen
3905 let relative_rows = window
3906 .update(cx, |editor, cx| {
3907 let snapshot = editor.snapshot(cx);
3908
3909 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3910 })
3911 .unwrap();
3912 assert_eq!(relative_rows.len(), 3);
3913 assert_eq!(relative_rows[&0], 5);
3914 assert_eq!(relative_rows[&1], 4);
3915 assert_eq!(relative_rows[&2], 3);
3916 }
3917
3918 #[gpui::test]
3919 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3920 init_test(cx, |_| {});
3921
3922 let window = cx.add_window(|cx| {
3923 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3924 Editor::new(EditorMode::Full, buffer, None, cx)
3925 });
3926 let editor = window.root(cx).unwrap();
3927 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3928 let mut element = EditorElement::new(&editor, style);
3929
3930 window
3931 .update(cx, |editor, cx| {
3932 editor.cursor_shape = CursorShape::Block;
3933 editor.change_selections(None, cx, |s| {
3934 s.select_ranges([
3935 Point::new(0, 0)..Point::new(1, 0),
3936 Point::new(3, 2)..Point::new(3, 3),
3937 Point::new(5, 6)..Point::new(6, 0),
3938 ]);
3939 });
3940 })
3941 .unwrap();
3942 let state = cx
3943 .update_window(window.into(), |_view, cx| {
3944 cx.with_element_context(|cx| {
3945 element.after_layout(
3946 Bounds {
3947 origin: point(px(500.), px(500.)),
3948 size: size(px(500.), px(500.)),
3949 },
3950 &mut (),
3951 cx,
3952 )
3953 })
3954 })
3955 .unwrap();
3956
3957 assert_eq!(state.selections.len(), 1);
3958 let local_selections = &state.selections[0].1;
3959 assert_eq!(local_selections.len(), 3);
3960 // moves cursor back one line
3961 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3962 assert_eq!(
3963 local_selections[0].range,
3964 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3965 );
3966
3967 // moves cursor back one column
3968 assert_eq!(
3969 local_selections[1].range,
3970 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3971 );
3972 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3973
3974 // leaves cursor on the max point
3975 assert_eq!(
3976 local_selections[2].range,
3977 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3978 );
3979 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3980
3981 // active lines does not include 1 (even though the range of the selection does)
3982 assert_eq!(
3983 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3984 vec![0, 3, 5, 6]
3985 );
3986
3987 // multi-buffer support
3988 // in DisplayPoint coordinates, this is what we're dealing with:
3989 // 0: [[file
3990 // 1: header]]
3991 // 2: aaaaaa
3992 // 3: bbbbbb
3993 // 4: cccccc
3994 // 5:
3995 // 6: ...
3996 // 7: ffffff
3997 // 8: gggggg
3998 // 9: hhhhhh
3999 // 10:
4000 // 11: [[file
4001 // 12: header]]
4002 // 13: bbbbbb
4003 // 14: cccccc
4004 // 15: dddddd
4005 let window = cx.add_window(|cx| {
4006 let buffer = MultiBuffer::build_multi(
4007 [
4008 (
4009 &(sample_text(8, 6, 'a') + "\n"),
4010 vec![
4011 Point::new(0, 0)..Point::new(3, 0),
4012 Point::new(4, 0)..Point::new(7, 0),
4013 ],
4014 ),
4015 (
4016 &(sample_text(8, 6, 'a') + "\n"),
4017 vec![Point::new(1, 0)..Point::new(3, 0)],
4018 ),
4019 ],
4020 cx,
4021 );
4022 Editor::new(EditorMode::Full, buffer, None, cx)
4023 });
4024 let editor = window.root(cx).unwrap();
4025 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4026 let mut element = EditorElement::new(&editor, style);
4027 let _state = window.update(cx, |editor, cx| {
4028 editor.cursor_shape = CursorShape::Block;
4029 editor.change_selections(None, cx, |s| {
4030 s.select_display_ranges([
4031 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
4032 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
4033 ]);
4034 });
4035 });
4036
4037 let state = cx
4038 .update_window(window.into(), |_view, cx| {
4039 cx.with_element_context(|cx| {
4040 element.after_layout(
4041 Bounds {
4042 origin: point(px(500.), px(500.)),
4043 size: size(px(500.), px(500.)),
4044 },
4045 &mut (),
4046 cx,
4047 )
4048 })
4049 })
4050 .unwrap();
4051 assert_eq!(state.selections.len(), 1);
4052 let local_selections = &state.selections[0].1;
4053 assert_eq!(local_selections.len(), 2);
4054
4055 // moves cursor on excerpt boundary back a line
4056 // and doesn't allow selection to bleed through
4057 assert_eq!(
4058 local_selections[0].range,
4059 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
4060 );
4061 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
4062 // moves cursor on buffer boundary back two lines
4063 // and doesn't allow selection to bleed through
4064 assert_eq!(
4065 local_selections[1].range,
4066 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
4067 );
4068 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
4069 }
4070
4071 #[gpui::test]
4072 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
4073 init_test(cx, |_| {});
4074
4075 let window = cx.add_window(|cx| {
4076 let buffer = MultiBuffer::build_simple("", cx);
4077 Editor::new(EditorMode::Full, buffer, None, cx)
4078 });
4079 let editor = window.root(cx).unwrap();
4080 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4081 window
4082 .update(cx, |editor, cx| {
4083 editor.set_placeholder_text("hello", cx);
4084 editor.insert_blocks(
4085 [BlockProperties {
4086 style: BlockStyle::Fixed,
4087 disposition: BlockDisposition::Above,
4088 height: 3,
4089 position: Anchor::min(),
4090 render: Arc::new(|_| div().into_any()),
4091 }],
4092 None,
4093 cx,
4094 );
4095
4096 // Blur the editor so that it displays placeholder text.
4097 cx.blur();
4098 })
4099 .unwrap();
4100
4101 let mut element = EditorElement::new(&editor, style);
4102 let state = cx
4103 .update_window(window.into(), |_view, cx| {
4104 cx.with_element_context(|cx| {
4105 element.after_layout(
4106 Bounds {
4107 origin: point(px(500.), px(500.)),
4108 size: size(px(500.), px(500.)),
4109 },
4110 &mut (),
4111 cx,
4112 )
4113 })
4114 })
4115 .unwrap();
4116
4117 assert_eq!(state.position_map.line_layouts.len(), 4);
4118 assert_eq!(
4119 state
4120 .line_numbers
4121 .iter()
4122 .map(Option::is_some)
4123 .collect::<Vec<_>>(),
4124 &[false, false, false, true]
4125 );
4126 }
4127
4128 #[gpui::test]
4129 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
4130 const TAB_SIZE: u32 = 4;
4131
4132 let input_text = "\t \t|\t| a b";
4133 let expected_invisibles = vec![
4134 Invisible::Tab {
4135 line_start_offset: 0,
4136 },
4137 Invisible::Whitespace {
4138 line_offset: TAB_SIZE as usize,
4139 },
4140 Invisible::Tab {
4141 line_start_offset: TAB_SIZE as usize + 1,
4142 },
4143 Invisible::Tab {
4144 line_start_offset: TAB_SIZE as usize * 2 + 1,
4145 },
4146 Invisible::Whitespace {
4147 line_offset: TAB_SIZE as usize * 3 + 1,
4148 },
4149 Invisible::Whitespace {
4150 line_offset: TAB_SIZE as usize * 3 + 3,
4151 },
4152 ];
4153 assert_eq!(
4154 expected_invisibles.len(),
4155 input_text
4156 .chars()
4157 .filter(|initial_char| initial_char.is_whitespace())
4158 .count(),
4159 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4160 );
4161
4162 init_test(cx, |s| {
4163 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4164 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
4165 });
4166
4167 let actual_invisibles =
4168 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
4169
4170 assert_eq!(expected_invisibles, actual_invisibles);
4171 }
4172
4173 #[gpui::test]
4174 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
4175 init_test(cx, |s| {
4176 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4177 s.defaults.tab_size = NonZeroU32::new(4);
4178 });
4179
4180 for editor_mode_without_invisibles in [
4181 EditorMode::SingleLine,
4182 EditorMode::AutoHeight { max_lines: 100 },
4183 ] {
4184 let invisibles = collect_invisibles_from_new_editor(
4185 cx,
4186 editor_mode_without_invisibles,
4187 "\t\t\t| | a b",
4188 px(500.0),
4189 );
4190 assert!(invisibles.is_empty(),
4191 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4192 }
4193 }
4194
4195 #[gpui::test]
4196 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4197 let tab_size = 4;
4198 let input_text = "a\tbcd ".repeat(9);
4199 let repeated_invisibles = [
4200 Invisible::Tab {
4201 line_start_offset: 1,
4202 },
4203 Invisible::Whitespace {
4204 line_offset: tab_size as usize + 3,
4205 },
4206 Invisible::Whitespace {
4207 line_offset: tab_size as usize + 4,
4208 },
4209 Invisible::Whitespace {
4210 line_offset: tab_size as usize + 5,
4211 },
4212 ];
4213 let expected_invisibles = std::iter::once(repeated_invisibles)
4214 .cycle()
4215 .take(9)
4216 .flatten()
4217 .collect::<Vec<_>>();
4218 assert_eq!(
4219 expected_invisibles.len(),
4220 input_text
4221 .chars()
4222 .filter(|initial_char| initial_char.is_whitespace())
4223 .count(),
4224 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4225 );
4226 info!("Expected invisibles: {expected_invisibles:?}");
4227
4228 init_test(cx, |_| {});
4229
4230 // Put the same string with repeating whitespace pattern into editors of various size,
4231 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4232 let resize_step = 10.0;
4233 let mut editor_width = 200.0;
4234 while editor_width <= 1000.0 {
4235 update_test_language_settings(cx, |s| {
4236 s.defaults.tab_size = NonZeroU32::new(tab_size);
4237 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4238 s.defaults.preferred_line_length = Some(editor_width as u32);
4239 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4240 });
4241
4242 let actual_invisibles = collect_invisibles_from_new_editor(
4243 cx,
4244 EditorMode::Full,
4245 &input_text,
4246 px(editor_width),
4247 );
4248
4249 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4250 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4251 let mut i = 0;
4252 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4253 i = actual_index;
4254 match expected_invisibles.get(i) {
4255 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4256 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4257 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4258 _ => {
4259 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4260 }
4261 },
4262 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4263 }
4264 }
4265 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4266 assert!(
4267 missing_expected_invisibles.is_empty(),
4268 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4269 );
4270
4271 editor_width += resize_step;
4272 }
4273 }
4274
4275 fn collect_invisibles_from_new_editor(
4276 cx: &mut TestAppContext,
4277 editor_mode: EditorMode,
4278 input_text: &str,
4279 editor_width: Pixels,
4280 ) -> Vec<Invisible> {
4281 info!(
4282 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4283 editor_width.0
4284 );
4285 let window = cx.add_window(|cx| {
4286 let buffer = MultiBuffer::build_simple(&input_text, cx);
4287 Editor::new(editor_mode, buffer, None, cx)
4288 });
4289 let editor = window.root(cx).unwrap();
4290 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4291 let mut element = EditorElement::new(&editor, style);
4292 window
4293 .update(cx, |editor, cx| {
4294 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4295 editor.set_wrap_width(Some(editor_width), cx);
4296 })
4297 .unwrap();
4298 let layout_state = cx
4299 .update_window(window.into(), |_, cx| {
4300 cx.with_element_context(|cx| {
4301 element.after_layout(
4302 Bounds {
4303 origin: point(px(500.), px(500.)),
4304 size: size(px(500.), px(500.)),
4305 },
4306 &mut (),
4307 cx,
4308 )
4309 })
4310 })
4311 .unwrap();
4312
4313 layout_state
4314 .position_map
4315 .line_layouts
4316 .iter()
4317 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
4318 .cloned()
4319 .collect()
4320 }
4321}
4322
4323pub fn register_action<T: Action>(
4324 view: &View<Editor>,
4325 cx: &mut WindowContext,
4326 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4327) {
4328 let view = view.clone();
4329 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4330 let action = action.downcast_ref().unwrap();
4331 if phase == DispatchPhase::Bubble {
4332 view.update(cx, |editor, cx| {
4333 listener(editor, action, cx);
4334 })
4335 }
4336 })
4337}
4338
4339fn compute_auto_height_layout(
4340 editor: &mut Editor,
4341 max_lines: usize,
4342 max_line_number_width: Pixels,
4343 known_dimensions: Size<Option<Pixels>>,
4344 cx: &mut ViewContext<Editor>,
4345) -> Option<Size<Pixels>> {
4346 let width = known_dimensions.width?;
4347 if let Some(height) = known_dimensions.height {
4348 return Some(size(width, height));
4349 }
4350
4351 let style = editor.style.as_ref().unwrap();
4352 let font_id = cx.text_system().resolve_font(&style.text.font());
4353 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4354 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4355 let em_width = cx
4356 .text_system()
4357 .typographic_bounds(font_id, font_size, 'm')
4358 .unwrap()
4359 .size
4360 .width;
4361
4362 let mut snapshot = editor.snapshot(cx);
4363 let gutter_dimensions =
4364 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4365
4366 editor.gutter_width = gutter_dimensions.width;
4367 let text_width = width - gutter_dimensions.width;
4368 let overscroll = size(em_width, px(0.));
4369
4370 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4371 if editor.set_wrap_width(Some(editor_width), cx) {
4372 snapshot = editor.snapshot(cx);
4373 }
4374
4375 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4376 let height = scroll_height
4377 .max(line_height)
4378 .min(line_height * max_lines as f32);
4379
4380 Some(size(width, height))
4381}