1use crate::{
2 blame_entry_tooltip::{blame_entry_relative_timestamp, BlameEntryTooltip},
3 display_map::{
4 BlockContext, BlockStyle, DisplaySnapshot, HighlightedChunk, ToDisplayPoint, TransformBlock,
5 },
6 editor_settings::{
7 CurrentLineHighlight, DoubleClickInMultibuffer, MultiCursorModifier, ShowScrollbar,
8 },
9 git::{
10 blame::{CommitDetails, GitBlame},
11 diff_hunk_to_display, DisplayDiffHunk,
12 },
13 hover_popover::{
14 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
15 },
16 hunk_status,
17 items::BufferSearchHighlights,
18 mouse_context_menu::{self, MouseContextMenu},
19 scroll::scroll_amount::ScrollAmount,
20 CodeActionsMenu, CursorShape, DisplayPoint, DisplayRow, DocumentHighlightRead,
21 DocumentHighlightWrite, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
22 ExpandExcerpts, GutterDimensions, HalfPageDown, HalfPageUp, HoveredCursor, HunkToExpand,
23 LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, RowExt, RowRangeExt, SelectPhase,
24 Selection, SoftWrap, ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
25};
26use anyhow::Result;
27use client::ParticipantIndex;
28use collections::{BTreeMap, HashMap};
29use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
30use gpui::{
31 anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
32 transparent_black, Action, AnchorCorner, AnyElement, AvailableSpace, Bounds, ClipboardItem,
33 ContentMask, Corners, CursorStyle, DispatchPhase, Edges, Element, ElementInputHandler, Entity,
34 GlobalElementId, Hitbox, Hsla, InteractiveElement, IntoElement, ModifiersChangedEvent,
35 MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad, ParentElement, Pixels,
36 ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size, Stateful,
37 StatefulInteractiveElement, Style, Styled, TextRun, TextStyle, TextStyleRefinement, View,
38 ViewContext, WeakView, WindowContext,
39};
40use itertools::Itertools;
41use language::language_settings::{
42 IndentGuideBackgroundColoring, IndentGuideColoring, ShowWhitespaceSetting,
43};
44use lsp::DiagnosticSeverity;
45use multi_buffer::{Anchor, MultiBufferPoint, MultiBufferRow};
46use project::{
47 project_settings::{GitGutterSetting, ProjectSettings},
48 ProjectPath,
49};
50use settings::Settings;
51use smallvec::SmallVec;
52use std::{
53 any::TypeId,
54 borrow::Cow,
55 cmp::{self, Ordering},
56 fmt::Write,
57 iter, mem,
58 ops::{Deref, Range},
59 sync::Arc,
60};
61use sum_tree::Bias;
62use theme::{ActiveTheme, PlayerColor};
63use ui::prelude::*;
64use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
65use util::ResultExt;
66use workspace::{item::Item, Workspace};
67
68struct SelectionLayout {
69 head: DisplayPoint,
70 cursor_shape: CursorShape,
71 is_newest: bool,
72 is_local: bool,
73 range: Range<DisplayPoint>,
74 active_rows: Range<DisplayRow>,
75 user_name: Option<SharedString>,
76}
77
78impl SelectionLayout {
79 fn new<T: ToPoint + ToDisplayPoint + Clone>(
80 selection: Selection<T>,
81 line_mode: bool,
82 cursor_shape: CursorShape,
83 map: &DisplaySnapshot,
84 is_newest: bool,
85 is_local: bool,
86 user_name: Option<SharedString>,
87 ) -> Self {
88 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
89 let display_selection = point_selection.map(|p| p.to_display_point(map));
90 let mut range = display_selection.range();
91 let mut head = display_selection.head();
92 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
93 ..map.next_line_boundary(point_selection.end).1.row();
94
95 // vim visual line mode
96 if line_mode {
97 let point_range = map.expand_to_line(point_selection.range());
98 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
99 }
100
101 // any vim visual mode (including line mode)
102 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
103 && !range.is_empty()
104 && !selection.reversed
105 {
106 if head.column() > 0 {
107 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
108 } else if head.row().0 > 0 && head != map.max_point() {
109 head = map.clip_point(
110 DisplayPoint::new(
111 head.row().previous_row(),
112 map.line_len(head.row().previous_row()),
113 ),
114 Bias::Left,
115 );
116 // updating range.end is a no-op unless you're cursor is
117 // on the newline containing a multi-buffer divider
118 // in which case the clip_point may have moved the head up
119 // an additional row.
120 range.end = DisplayPoint::new(head.row().next_row(), 0);
121 active_rows.end = head.row();
122 }
123 }
124
125 Self {
126 head,
127 cursor_shape,
128 is_newest,
129 is_local,
130 range,
131 active_rows,
132 user_name,
133 }
134 }
135}
136
137pub struct EditorElement {
138 editor: View<Editor>,
139 style: EditorStyle,
140}
141
142type DisplayRowDelta = u32;
143
144impl EditorElement {
145 pub(crate) const SCROLLBAR_WIDTH: Pixels = px(13.);
146
147 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
148 Self {
149 editor: editor.clone(),
150 style,
151 }
152 }
153
154 fn register_actions(&self, cx: &mut WindowContext) {
155 let view = &self.editor;
156 view.update(cx, |editor, cx| {
157 for action in editor.editor_actions.iter() {
158 (action)(cx)
159 }
160 });
161
162 crate::rust_analyzer_ext::apply_related_actions(view, cx);
163 register_action(view, cx, Editor::move_left);
164 register_action(view, cx, Editor::move_right);
165 register_action(view, cx, Editor::move_down);
166 register_action(view, cx, Editor::move_down_by_lines);
167 register_action(view, cx, Editor::select_down_by_lines);
168 register_action(view, cx, Editor::move_up);
169 register_action(view, cx, Editor::move_up_by_lines);
170 register_action(view, cx, Editor::select_up_by_lines);
171 register_action(view, cx, Editor::cancel);
172 register_action(view, cx, Editor::newline);
173 register_action(view, cx, Editor::newline_above);
174 register_action(view, cx, Editor::newline_below);
175 register_action(view, cx, Editor::backspace);
176 register_action(view, cx, Editor::delete);
177 register_action(view, cx, Editor::tab);
178 register_action(view, cx, Editor::tab_prev);
179 register_action(view, cx, Editor::indent);
180 register_action(view, cx, Editor::outdent);
181 register_action(view, cx, Editor::delete_line);
182 register_action(view, cx, Editor::join_lines);
183 register_action(view, cx, Editor::sort_lines_case_sensitive);
184 register_action(view, cx, Editor::sort_lines_case_insensitive);
185 register_action(view, cx, Editor::reverse_lines);
186 register_action(view, cx, Editor::shuffle_lines);
187 register_action(view, cx, Editor::convert_to_upper_case);
188 register_action(view, cx, Editor::convert_to_lower_case);
189 register_action(view, cx, Editor::convert_to_title_case);
190 register_action(view, cx, Editor::convert_to_snake_case);
191 register_action(view, cx, Editor::convert_to_kebab_case);
192 register_action(view, cx, Editor::convert_to_upper_camel_case);
193 register_action(view, cx, Editor::convert_to_lower_camel_case);
194 register_action(view, cx, Editor::convert_to_opposite_case);
195 register_action(view, cx, Editor::delete_to_previous_word_start);
196 register_action(view, cx, Editor::delete_to_previous_subword_start);
197 register_action(view, cx, Editor::delete_to_next_word_end);
198 register_action(view, cx, Editor::delete_to_next_subword_end);
199 register_action(view, cx, Editor::delete_to_beginning_of_line);
200 register_action(view, cx, Editor::delete_to_end_of_line);
201 register_action(view, cx, Editor::cut_to_end_of_line);
202 register_action(view, cx, Editor::duplicate_line_up);
203 register_action(view, cx, Editor::duplicate_line_down);
204 register_action(view, cx, Editor::move_line_up);
205 register_action(view, cx, Editor::move_line_down);
206 register_action(view, cx, Editor::transpose);
207 register_action(view, cx, Editor::cut);
208 register_action(view, cx, Editor::copy);
209 register_action(view, cx, Editor::paste);
210 register_action(view, cx, Editor::undo);
211 register_action(view, cx, Editor::redo);
212 register_action(view, cx, Editor::move_page_up);
213 register_action(view, cx, Editor::move_page_down);
214 register_action(view, cx, Editor::next_screen);
215 register_action(view, cx, Editor::scroll_cursor_top);
216 register_action(view, cx, Editor::scroll_cursor_center);
217 register_action(view, cx, Editor::scroll_cursor_bottom);
218 register_action(view, cx, |editor, _: &LineDown, cx| {
219 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
220 });
221 register_action(view, cx, |editor, _: &LineUp, cx| {
222 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
223 });
224 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
225 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
226 });
227 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
228 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
229 });
230 register_action(view, cx, |editor, _: &PageDown, cx| {
231 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
232 });
233 register_action(view, cx, |editor, _: &PageUp, cx| {
234 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
235 });
236 register_action(view, cx, Editor::move_to_previous_word_start);
237 register_action(view, cx, Editor::move_to_previous_subword_start);
238 register_action(view, cx, Editor::move_to_next_word_end);
239 register_action(view, cx, Editor::move_to_next_subword_end);
240 register_action(view, cx, Editor::move_to_beginning_of_line);
241 register_action(view, cx, Editor::move_to_end_of_line);
242 register_action(view, cx, Editor::move_to_start_of_paragraph);
243 register_action(view, cx, Editor::move_to_end_of_paragraph);
244 register_action(view, cx, Editor::move_to_beginning);
245 register_action(view, cx, Editor::move_to_end);
246 register_action(view, cx, Editor::select_up);
247 register_action(view, cx, Editor::select_down);
248 register_action(view, cx, Editor::select_left);
249 register_action(view, cx, Editor::select_right);
250 register_action(view, cx, Editor::select_to_previous_word_start);
251 register_action(view, cx, Editor::select_to_previous_subword_start);
252 register_action(view, cx, Editor::select_to_next_word_end);
253 register_action(view, cx, Editor::select_to_next_subword_end);
254 register_action(view, cx, Editor::select_to_beginning_of_line);
255 register_action(view, cx, Editor::select_to_end_of_line);
256 register_action(view, cx, Editor::select_to_start_of_paragraph);
257 register_action(view, cx, Editor::select_to_end_of_paragraph);
258 register_action(view, cx, Editor::select_to_beginning);
259 register_action(view, cx, Editor::select_to_end);
260 register_action(view, cx, Editor::select_all);
261 register_action(view, cx, |editor, action, cx| {
262 editor.select_all_matches(action, cx).log_err();
263 });
264 register_action(view, cx, Editor::select_line);
265 register_action(view, cx, Editor::split_selection_into_lines);
266 register_action(view, cx, Editor::add_selection_above);
267 register_action(view, cx, Editor::add_selection_below);
268 register_action(view, cx, |editor, action, cx| {
269 editor.select_next(action, cx).log_err();
270 });
271 register_action(view, cx, |editor, action, cx| {
272 editor.select_previous(action, cx).log_err();
273 });
274 register_action(view, cx, Editor::toggle_comments);
275 register_action(view, cx, Editor::select_larger_syntax_node);
276 register_action(view, cx, Editor::select_smaller_syntax_node);
277 register_action(view, cx, Editor::move_to_enclosing_bracket);
278 register_action(view, cx, Editor::undo_selection);
279 register_action(view, cx, Editor::redo_selection);
280 if !view.read(cx).is_singleton(cx) {
281 register_action(view, cx, Editor::expand_excerpts);
282 }
283 register_action(view, cx, Editor::go_to_diagnostic);
284 register_action(view, cx, Editor::go_to_prev_diagnostic);
285 register_action(view, cx, Editor::go_to_hunk);
286 register_action(view, cx, Editor::go_to_prev_hunk);
287 register_action(view, cx, |editor, a, cx| {
288 editor.go_to_definition(a, cx).detach_and_log_err(cx);
289 });
290 register_action(view, cx, |editor, a, cx| {
291 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
292 });
293 register_action(view, cx, |editor, a, cx| {
294 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
295 });
296 register_action(view, cx, |editor, a, cx| {
297 editor
298 .go_to_implementation_split(a, cx)
299 .detach_and_log_err(cx);
300 });
301 register_action(view, cx, |editor, a, cx| {
302 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
303 });
304 register_action(view, cx, |editor, a, cx| {
305 editor
306 .go_to_type_definition_split(a, cx)
307 .detach_and_log_err(cx);
308 });
309 register_action(view, cx, Editor::open_url);
310 register_action(view, cx, Editor::fold);
311 register_action(view, cx, Editor::fold_at);
312 register_action(view, cx, Editor::unfold_lines);
313 register_action(view, cx, Editor::unfold_at);
314 register_action(view, cx, Editor::fold_selected_ranges);
315 register_action(view, cx, Editor::show_completions);
316 register_action(view, cx, Editor::toggle_code_actions);
317 register_action(view, cx, Editor::open_excerpts);
318 register_action(view, cx, Editor::open_excerpts_in_split);
319 register_action(view, cx, Editor::toggle_soft_wrap);
320 register_action(view, cx, Editor::toggle_line_numbers);
321 register_action(view, cx, Editor::toggle_inlay_hints);
322 register_action(view, cx, hover_popover::hover);
323 register_action(view, cx, Editor::reveal_in_finder);
324 register_action(view, cx, Editor::copy_path);
325 register_action(view, cx, Editor::copy_relative_path);
326 register_action(view, cx, Editor::copy_highlight_json);
327 register_action(view, cx, Editor::copy_permalink_to_line);
328 register_action(view, cx, Editor::open_permalink_to_line);
329 register_action(view, cx, Editor::toggle_git_blame);
330 register_action(view, cx, Editor::toggle_git_blame_inline);
331 register_action(view, cx, Editor::toggle_hunk_diff);
332 register_action(view, cx, Editor::expand_all_hunk_diffs);
333 register_action(view, cx, |editor, action, cx| {
334 if let Some(task) = editor.format(action, cx) {
335 task.detach_and_log_err(cx);
336 } else {
337 cx.propagate();
338 }
339 });
340 register_action(view, cx, Editor::restart_language_server);
341 register_action(view, cx, Editor::show_character_palette);
342 register_action(view, cx, |editor, action, cx| {
343 if let Some(task) = editor.confirm_completion(action, cx) {
344 task.detach_and_log_err(cx);
345 } else {
346 cx.propagate();
347 }
348 });
349 register_action(view, cx, |editor, action, cx| {
350 if let Some(task) = editor.confirm_code_action(action, cx) {
351 task.detach_and_log_err(cx);
352 } else {
353 cx.propagate();
354 }
355 });
356 register_action(view, cx, |editor, action, cx| {
357 if let Some(task) = editor.rename(action, cx) {
358 task.detach_and_log_err(cx);
359 } else {
360 cx.propagate();
361 }
362 });
363 register_action(view, cx, |editor, action, cx| {
364 if let Some(task) = editor.confirm_rename(action, cx) {
365 task.detach_and_log_err(cx);
366 } else {
367 cx.propagate();
368 }
369 });
370 register_action(view, cx, |editor, action, cx| {
371 if let Some(task) = editor.find_all_references(action, cx) {
372 task.detach_and_log_err(cx);
373 } else {
374 cx.propagate();
375 }
376 });
377 register_action(view, cx, Editor::next_inline_completion);
378 register_action(view, cx, Editor::previous_inline_completion);
379 register_action(view, cx, Editor::show_inline_completion);
380 register_action(view, cx, Editor::context_menu_first);
381 register_action(view, cx, Editor::context_menu_prev);
382 register_action(view, cx, Editor::context_menu_next);
383 register_action(view, cx, Editor::context_menu_last);
384 register_action(view, cx, Editor::display_cursor_names);
385 register_action(view, cx, Editor::unique_lines_case_insensitive);
386 register_action(view, cx, Editor::unique_lines_case_sensitive);
387 register_action(view, cx, Editor::accept_partial_inline_completion);
388 register_action(view, cx, Editor::accept_inline_completion);
389 register_action(view, cx, Editor::revert_selected_hunks);
390 register_action(view, cx, Editor::open_active_item_in_terminal)
391 }
392
393 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
394 let position_map = layout.position_map.clone();
395 cx.on_key_event({
396 let editor = self.editor.clone();
397 let text_hitbox = layout.text_hitbox.clone();
398 move |event: &ModifiersChangedEvent, phase, cx| {
399 if phase != DispatchPhase::Bubble {
400 return;
401 }
402
403 editor.update(cx, |editor, cx| {
404 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
405 })
406 }
407 });
408 }
409
410 fn modifiers_changed(
411 editor: &mut Editor,
412 event: &ModifiersChangedEvent,
413 position_map: &PositionMap,
414 text_hitbox: &Hitbox,
415 cx: &mut ViewContext<Editor>,
416 ) {
417 let mouse_position = cx.mouse_position();
418 if !text_hitbox.is_hovered(cx) {
419 return;
420 }
421
422 editor.update_hovered_link(
423 position_map.point_for_position(text_hitbox.bounds, mouse_position),
424 &position_map.snapshot,
425 event.modifiers,
426 cx,
427 )
428 }
429
430 fn mouse_left_down(
431 editor: &mut Editor,
432 event: &MouseDownEvent,
433 hovered_hunk: Option<&HunkToExpand>,
434 position_map: &PositionMap,
435 text_hitbox: &Hitbox,
436 gutter_hitbox: &Hitbox,
437 cx: &mut ViewContext<Editor>,
438 ) {
439 if cx.default_prevented() {
440 return;
441 }
442
443 let mut click_count = event.click_count;
444 let mut modifiers = event.modifiers;
445
446 if let Some(hovered_hunk) = hovered_hunk {
447 editor.expand_diff_hunk(None, hovered_hunk, cx);
448 cx.notify();
449 return;
450 } else if gutter_hitbox.is_hovered(cx) {
451 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
452 } else if !text_hitbox.is_hovered(cx) {
453 return;
454 }
455
456 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
457 match EditorSettings::get_global(cx).double_click_in_multibuffer {
458 DoubleClickInMultibuffer::Select => {
459 // do nothing special on double click, all selection logic is below
460 }
461 DoubleClickInMultibuffer::Open => {
462 if modifiers.alt {
463 // if double click is made with alt, pretend it's a regular double click without opening and alt,
464 // and run the selection logic.
465 modifiers.alt = false;
466 } else {
467 // if double click is made without alt, open the corresponding excerp
468 editor.open_excerpts(&OpenExcerpts, cx);
469 return;
470 }
471 }
472 }
473 }
474
475 let point_for_position =
476 position_map.point_for_position(text_hitbox.bounds, event.position);
477 let position = point_for_position.previous_valid;
478 if modifiers.shift && modifiers.alt {
479 editor.select(
480 SelectPhase::BeginColumnar {
481 position,
482 reset: false,
483 goal_column: point_for_position.exact_unclipped.column(),
484 },
485 cx,
486 );
487 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
488 {
489 editor.select(
490 SelectPhase::Extend {
491 position,
492 click_count,
493 },
494 cx,
495 );
496 } else {
497 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
498 let multi_cursor_modifier = match multi_cursor_setting {
499 MultiCursorModifier::Alt => modifiers.alt,
500 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
501 };
502 editor.select(
503 SelectPhase::Begin {
504 position,
505 add: multi_cursor_modifier,
506 click_count,
507 },
508 cx,
509 );
510 }
511
512 cx.stop_propagation();
513 }
514
515 fn mouse_right_down(
516 editor: &mut Editor,
517 event: &MouseDownEvent,
518 position_map: &PositionMap,
519 text_hitbox: &Hitbox,
520 cx: &mut ViewContext<Editor>,
521 ) {
522 if !text_hitbox.is_hovered(cx) {
523 return;
524 }
525 let point_for_position =
526 position_map.point_for_position(text_hitbox.bounds, event.position);
527 mouse_context_menu::deploy_context_menu(
528 editor,
529 event.position,
530 point_for_position.previous_valid,
531 cx,
532 );
533 cx.stop_propagation();
534 }
535
536 fn mouse_middle_down(
537 editor: &mut Editor,
538 event: &MouseDownEvent,
539 position_map: &PositionMap,
540 text_hitbox: &Hitbox,
541 cx: &mut ViewContext<Editor>,
542 ) {
543 if cx.default_prevented() {
544 return;
545 }
546
547 let point_for_position =
548 position_map.point_for_position(text_hitbox.bounds, event.position);
549 let position = point_for_position.previous_valid;
550
551 editor.select(
552 SelectPhase::BeginColumnar {
553 position,
554 reset: true,
555 goal_column: point_for_position.exact_unclipped.column(),
556 },
557 cx,
558 );
559 }
560
561 fn mouse_up(
562 editor: &mut Editor,
563 event: &MouseUpEvent,
564 position_map: &PositionMap,
565 text_hitbox: &Hitbox,
566 cx: &mut ViewContext<Editor>,
567 ) {
568 let end_selection = editor.has_pending_selection();
569 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
570
571 if end_selection {
572 editor.select(SelectPhase::End, cx);
573 }
574
575 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
576 let multi_cursor_modifier = match multi_cursor_setting {
577 MultiCursorModifier::Alt => event.modifiers.secondary(),
578 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
579 };
580
581 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
582 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
583 editor.handle_click_hovered_link(point, event.modifiers, cx);
584
585 cx.stop_propagation();
586 } else if end_selection {
587 cx.stop_propagation();
588 } else if cfg!(target_os = "linux") && event.button == MouseButton::Middle {
589 if !text_hitbox.is_hovered(cx) || editor.read_only(cx) {
590 return;
591 }
592
593 #[cfg(target_os = "linux")]
594 if let Some(item) = cx.read_from_clipboard() {
595 let point_for_position =
596 position_map.point_for_position(text_hitbox.bounds, event.position);
597 let position = point_for_position.previous_valid;
598
599 editor.select(
600 SelectPhase::Begin {
601 position,
602 add: false,
603 click_count: 1,
604 },
605 cx,
606 );
607 editor.insert(item.text(), cx);
608 }
609 cx.stop_propagation()
610 }
611 }
612
613 fn mouse_dragged(
614 editor: &mut Editor,
615 event: &MouseMoveEvent,
616 position_map: &PositionMap,
617 text_bounds: Bounds<Pixels>,
618 cx: &mut ViewContext<Editor>,
619 ) {
620 if !editor.has_pending_selection() {
621 return;
622 }
623
624 let point_for_position = position_map.point_for_position(text_bounds, event.position);
625 let mut scroll_delta = gpui::Point::<f32>::default();
626 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
627 let top = text_bounds.origin.y + vertical_margin;
628 let bottom = text_bounds.lower_left().y - vertical_margin;
629 if event.position.y < top {
630 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
631 }
632 if event.position.y > bottom {
633 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
634 }
635
636 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
637 let left = text_bounds.origin.x + horizontal_margin;
638 let right = text_bounds.upper_right().x - horizontal_margin;
639 if event.position.x < left {
640 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
641 }
642 if event.position.x > right {
643 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
644 }
645
646 editor.select(
647 SelectPhase::Update {
648 position: point_for_position.previous_valid,
649 goal_column: point_for_position.exact_unclipped.column(),
650 scroll_delta,
651 },
652 cx,
653 );
654 }
655
656 fn mouse_moved(
657 editor: &mut Editor,
658 event: &MouseMoveEvent,
659 position_map: &PositionMap,
660 text_hitbox: &Hitbox,
661 gutter_hitbox: &Hitbox,
662 cx: &mut ViewContext<Editor>,
663 ) {
664 let modifiers = event.modifiers;
665 let gutter_hovered = gutter_hitbox.is_hovered(cx);
666 editor.set_gutter_hovered(gutter_hovered, cx);
667
668 // Don't trigger hover popover if mouse is hovering over context menu
669 if text_hitbox.is_hovered(cx) {
670 let point_for_position =
671 position_map.point_for_position(text_hitbox.bounds, event.position);
672
673 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
674
675 if let Some(point) = point_for_position.as_valid() {
676 let anchor = position_map
677 .snapshot
678 .buffer_snapshot
679 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
680 hover_at(editor, Some(anchor), cx);
681 Self::update_visible_cursor(editor, point, position_map, cx);
682 } else {
683 hover_at(editor, None, cx);
684 }
685 } else {
686 editor.hide_hovered_link(cx);
687 hover_at(editor, None, cx);
688 if gutter_hovered {
689 cx.stop_propagation();
690 }
691 }
692 }
693
694 fn update_visible_cursor(
695 editor: &mut Editor,
696 point: DisplayPoint,
697 position_map: &PositionMap,
698 cx: &mut ViewContext<Editor>,
699 ) {
700 let snapshot = &position_map.snapshot;
701 let Some(hub) = editor.collaboration_hub() else {
702 return;
703 };
704 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
705 ..DisplayPoint::new(
706 point.row(),
707 (point.column() + 1).min(snapshot.line_len(point.row())),
708 );
709
710 let range = snapshot
711 .buffer_snapshot
712 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
713 ..snapshot
714 .buffer_snapshot
715 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
716
717 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
718 return;
719 };
720 let key = crate::HoveredCursor {
721 replica_id: selection.replica_id,
722 selection_id: selection.selection.id,
723 };
724 editor.hovered_cursors.insert(
725 key.clone(),
726 cx.spawn(|editor, mut cx| async move {
727 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
728 editor
729 .update(&mut cx, |editor, cx| {
730 editor.hovered_cursors.remove(&key);
731 cx.notify();
732 })
733 .ok();
734 }),
735 );
736 cx.notify()
737 }
738
739 fn layout_selections(
740 &self,
741 start_anchor: Anchor,
742 end_anchor: Anchor,
743 snapshot: &EditorSnapshot,
744 start_row: DisplayRow,
745 end_row: DisplayRow,
746 cx: &mut WindowContext,
747 ) -> (
748 Vec<(PlayerColor, Vec<SelectionLayout>)>,
749 BTreeMap<DisplayRow, bool>,
750 Option<DisplayPoint>,
751 ) {
752 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
753 let mut active_rows = BTreeMap::new();
754 let mut newest_selection_head = None;
755 let editor = self.editor.read(cx);
756
757 if editor.show_local_selections {
758 let mut local_selections: Vec<Selection<Point>> = editor
759 .selections
760 .disjoint_in_range(start_anchor..end_anchor, cx);
761 local_selections.extend(editor.selections.pending(cx));
762 let mut layouts = Vec::new();
763 let newest = editor.selections.newest(cx);
764 for selection in local_selections.drain(..) {
765 let is_empty = selection.start == selection.end;
766 let is_newest = selection == newest;
767
768 let layout = SelectionLayout::new(
769 selection,
770 editor.selections.line_mode,
771 editor.cursor_shape,
772 &snapshot.display_snapshot,
773 is_newest,
774 editor.leader_peer_id.is_none(),
775 None,
776 );
777 if is_newest {
778 newest_selection_head = Some(layout.head);
779 }
780
781 for row in cmp::max(layout.active_rows.start.0, start_row.0)
782 ..=cmp::min(layout.active_rows.end.0, end_row.0)
783 {
784 let contains_non_empty_selection =
785 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
786 *contains_non_empty_selection |= !is_empty;
787 }
788 layouts.push(layout);
789 }
790
791 let player = if editor.read_only(cx) {
792 cx.theme().players().read_only()
793 } else {
794 self.style.local_player
795 };
796
797 selections.push((player, layouts));
798 }
799
800 if let Some(collaboration_hub) = &editor.collaboration_hub {
801 // When following someone, render the local selections in their color.
802 if let Some(leader_id) = editor.leader_peer_id {
803 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
804 if let Some(participant_index) = collaboration_hub
805 .user_participant_indices(cx)
806 .get(&collaborator.user_id)
807 {
808 if let Some((local_selection_style, _)) = selections.first_mut() {
809 *local_selection_style = cx
810 .theme()
811 .players()
812 .color_for_participant(participant_index.0);
813 }
814 }
815 }
816 }
817
818 let mut remote_selections = HashMap::default();
819 for selection in snapshot.remote_selections_in_range(
820 &(start_anchor..end_anchor),
821 collaboration_hub.as_ref(),
822 cx,
823 ) {
824 let selection_style = Self::get_participant_color(selection.participant_index, cx);
825
826 // Don't re-render the leader's selections, since the local selections
827 // match theirs.
828 if Some(selection.peer_id) == editor.leader_peer_id {
829 continue;
830 }
831 let key = HoveredCursor {
832 replica_id: selection.replica_id,
833 selection_id: selection.selection.id,
834 };
835
836 let is_shown =
837 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
838
839 remote_selections
840 .entry(selection.replica_id)
841 .or_insert((selection_style, Vec::new()))
842 .1
843 .push(SelectionLayout::new(
844 selection.selection,
845 selection.line_mode,
846 selection.cursor_shape,
847 &snapshot.display_snapshot,
848 false,
849 false,
850 if is_shown { selection.user_name } else { None },
851 ));
852 }
853
854 selections.extend(remote_selections.into_values());
855 }
856 (selections, active_rows, newest_selection_head)
857 }
858
859 #[allow(clippy::too_many_arguments)]
860 fn layout_folds(
861 &self,
862 snapshot: &EditorSnapshot,
863 content_origin: gpui::Point<Pixels>,
864 visible_anchor_range: Range<Anchor>,
865 visible_display_row_range: Range<DisplayRow>,
866 scroll_pixel_position: gpui::Point<Pixels>,
867 line_height: Pixels,
868 line_layouts: &[LineWithInvisibles],
869 cx: &mut WindowContext,
870 ) -> Vec<FoldLayout> {
871 snapshot
872 .folds_in_range(visible_anchor_range.clone())
873 .filter_map(|fold| {
874 // Skip folds that have no text.
875 if fold.text.is_empty() {
876 return None;
877 }
878
879 let fold_range = fold.range.clone();
880 let display_range = fold.range.start.to_display_point(&snapshot)
881 ..fold.range.end.to_display_point(&snapshot);
882 debug_assert_eq!(display_range.start.row(), display_range.end.row());
883 let row = display_range.start.row();
884 debug_assert!(row < visible_display_row_range.end);
885 let line_layout = line_layouts
886 .get(row.minus(visible_display_row_range.start) as usize)
887 .map(|l| &l.line)?;
888
889 let start_x = content_origin.x
890 + line_layout.x_for_index(display_range.start.column() as usize)
891 - scroll_pixel_position.x;
892 let start_y =
893 content_origin.y + row.as_f32() * line_height - scroll_pixel_position.y;
894 let end_x = content_origin.x
895 + line_layout.x_for_index(display_range.end.column() as usize)
896 - scroll_pixel_position.x;
897
898 let fold_bounds = Bounds {
899 origin: point(start_x, start_y),
900 size: size(end_x - start_x, line_height),
901 };
902
903 let mut hover_element = div()
904 .id(fold.id)
905 .size_full()
906 .cursor_pointer()
907 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
908 .on_click(
909 cx.listener_for(&self.editor, move |editor: &mut Editor, _, cx| {
910 editor.unfold_ranges(
911 [fold_range.start..fold_range.end],
912 true,
913 false,
914 cx,
915 );
916 cx.stop_propagation();
917 }),
918 )
919 .into_any();
920 hover_element.prepaint_as_root(fold_bounds.origin, fold_bounds.size.into(), cx);
921 Some(FoldLayout {
922 display_range,
923 hover_element,
924 })
925 })
926 .collect()
927 }
928
929 fn collect_cursors(
930 &self,
931 snapshot: &EditorSnapshot,
932 cx: &mut WindowContext,
933 ) -> Vec<(DisplayPoint, Hsla)> {
934 let editor = self.editor.read(cx);
935 let mut cursors = Vec::new();
936 let mut skip_local = false;
937 let mut add_cursor = |anchor: Anchor, color| {
938 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
939 };
940 // Remote cursors
941 if let Some(collaboration_hub) = &editor.collaboration_hub {
942 for remote_selection in snapshot.remote_selections_in_range(
943 &(Anchor::min()..Anchor::max()),
944 collaboration_hub.deref(),
945 cx,
946 ) {
947 let color = Self::get_participant_color(remote_selection.participant_index, cx);
948 add_cursor(remote_selection.selection.head(), color.cursor);
949 if Some(remote_selection.peer_id) == editor.leader_peer_id {
950 skip_local = true;
951 }
952 }
953 }
954 // Local cursors
955 if !skip_local {
956 let color = cx.theme().players().local().cursor;
957 editor.selections.disjoint.iter().for_each(|selection| {
958 add_cursor(selection.head(), color);
959 });
960 if let Some(ref selection) = editor.selections.pending_anchor() {
961 add_cursor(selection.head(), color);
962 }
963 }
964 cursors
965 }
966
967 #[allow(clippy::too_many_arguments)]
968 fn layout_visible_cursors(
969 &self,
970 snapshot: &EditorSnapshot,
971 selections: &[(PlayerColor, Vec<SelectionLayout>)],
972 visible_display_row_range: Range<DisplayRow>,
973 line_layouts: &[LineWithInvisibles],
974 text_hitbox: &Hitbox,
975 content_origin: gpui::Point<Pixels>,
976 scroll_position: gpui::Point<f32>,
977 scroll_pixel_position: gpui::Point<Pixels>,
978 line_height: Pixels,
979 em_width: Pixels,
980 autoscroll_containing_element: bool,
981 cx: &mut WindowContext,
982 ) -> Vec<CursorLayout> {
983 let mut autoscroll_bounds = None;
984 let cursor_layouts = self.editor.update(cx, |editor, cx| {
985 let mut cursors = Vec::new();
986 for (player_color, selections) in selections {
987 for selection in selections {
988 let cursor_position = selection.head;
989
990 let in_range = visible_display_row_range.contains(&cursor_position.row());
991 if (selection.is_local && !editor.show_local_cursors(cx)) || !in_range {
992 continue;
993 }
994
995 let cursor_row_layout = &line_layouts
996 [cursor_position.row().minus(visible_display_row_range.start) as usize]
997 .line;
998 let cursor_column = cursor_position.column() as usize;
999
1000 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1001 let mut block_width =
1002 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1003 if block_width == Pixels::ZERO {
1004 block_width = em_width;
1005 }
1006 let block_text = if let CursorShape::Block = selection.cursor_shape {
1007 snapshot.display_chars_at(cursor_position).next().and_then(
1008 |(character, _)| {
1009 let text = if character == '\n' {
1010 SharedString::from(" ")
1011 } else {
1012 SharedString::from(character.to_string())
1013 };
1014 let len = text.len();
1015
1016 let font = cursor_row_layout
1017 .font_id_for_index(cursor_column)
1018 .and_then(|cursor_font_id| {
1019 cx.text_system().get_font_for_id(cursor_font_id)
1020 })
1021 .unwrap_or(self.style.text.font());
1022
1023 cx.text_system()
1024 .shape_line(
1025 text,
1026 cursor_row_layout.font_size,
1027 &[TextRun {
1028 len,
1029 font,
1030 color: self.style.background,
1031 background_color: None,
1032 strikethrough: None,
1033 underline: None,
1034 }],
1035 )
1036 .log_err()
1037 },
1038 )
1039 } else {
1040 None
1041 };
1042
1043 let x = cursor_character_x - scroll_pixel_position.x;
1044 let y = (cursor_position.row().as_f32()
1045 - scroll_pixel_position.y / line_height)
1046 * line_height;
1047 if selection.is_newest {
1048 editor.pixel_position_of_newest_cursor = Some(point(
1049 text_hitbox.origin.x + x + block_width / 2.,
1050 text_hitbox.origin.y + y + line_height / 2.,
1051 ));
1052
1053 if autoscroll_containing_element {
1054 let top = text_hitbox.origin.y
1055 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1056 * line_height;
1057 let left = text_hitbox.origin.x
1058 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1059 .max(0.)
1060 * em_width;
1061
1062 let bottom = text_hitbox.origin.y
1063 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1064 * line_height;
1065 let right = text_hitbox.origin.x
1066 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1067 * em_width;
1068
1069 autoscroll_bounds =
1070 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1071 }
1072 }
1073
1074 let mut cursor = CursorLayout {
1075 color: player_color.cursor,
1076 block_width,
1077 origin: point(x, y),
1078 line_height,
1079 shape: selection.cursor_shape,
1080 block_text,
1081 cursor_name: None,
1082 };
1083 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1084 string: name,
1085 color: self.style.background,
1086 is_top_row: cursor_position.row().0 == 0,
1087 });
1088 cursor.layout(content_origin, cursor_name, cx);
1089 cursors.push(cursor);
1090 }
1091 }
1092 cursors
1093 });
1094
1095 if let Some(bounds) = autoscroll_bounds {
1096 cx.request_autoscroll(bounds);
1097 }
1098
1099 cursor_layouts
1100 }
1101
1102 fn layout_scrollbar(
1103 &self,
1104 snapshot: &EditorSnapshot,
1105 bounds: Bounds<Pixels>,
1106 scroll_position: gpui::Point<f32>,
1107 rows_per_page: f32,
1108 non_visible_cursors: bool,
1109 cx: &mut WindowContext,
1110 ) -> Option<ScrollbarLayout> {
1111 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1112 let show_scrollbars = match scrollbar_settings.show {
1113 ShowScrollbar::Auto => {
1114 let editor = self.editor.read(cx);
1115 let is_singleton = editor.is_singleton(cx);
1116 // Git
1117 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1118 ||
1119 // Buffer Search Results
1120 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1121 ||
1122 // Selected Symbol Occurrences
1123 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1124 ||
1125 // Diagnostics
1126 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
1127 ||
1128 // Cursors out of sight
1129 non_visible_cursors
1130 ||
1131 // Scrollmanager
1132 editor.scroll_manager.scrollbars_visible()
1133 }
1134 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1135 ShowScrollbar::Always => true,
1136 ShowScrollbar::Never => false,
1137 };
1138 if snapshot.mode != EditorMode::Full {
1139 return None;
1140 }
1141
1142 let visible_row_range = scroll_position.y..scroll_position.y + rows_per_page;
1143
1144 // If a drag took place after we started dragging the scrollbar,
1145 // cancel the scrollbar drag.
1146 if cx.has_active_drag() {
1147 self.editor.update(cx, |editor, cx| {
1148 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1149 });
1150 }
1151
1152 let track_bounds = Bounds::from_corners(
1153 point(self.scrollbar_left(&bounds), bounds.origin.y),
1154 point(bounds.lower_right().x, bounds.lower_left().y),
1155 );
1156
1157 let height = bounds.size.height;
1158 let total_rows = snapshot.max_point().row().as_f32() + rows_per_page;
1159 let px_per_row = height / total_rows;
1160 let thumb_height = (rows_per_page * px_per_row).max(ScrollbarLayout::MIN_THUMB_HEIGHT);
1161 let row_height = (height - thumb_height) / snapshot.max_point().row().as_f32();
1162
1163 Some(ScrollbarLayout {
1164 hitbox: cx.insert_hitbox(track_bounds, false),
1165 visible_row_range,
1166 row_height,
1167 visible: show_scrollbars,
1168 thumb_height,
1169 })
1170 }
1171
1172 #[allow(clippy::too_many_arguments)]
1173 fn prepaint_gutter_fold_toggles(
1174 &self,
1175 toggles: &mut [Option<AnyElement>],
1176 line_height: Pixels,
1177 gutter_dimensions: &GutterDimensions,
1178 gutter_settings: crate::editor_settings::Gutter,
1179 scroll_pixel_position: gpui::Point<Pixels>,
1180 gutter_hitbox: &Hitbox,
1181 cx: &mut WindowContext,
1182 ) {
1183 for (ix, fold_indicator) in toggles.iter_mut().enumerate() {
1184 if let Some(fold_indicator) = fold_indicator {
1185 debug_assert!(gutter_settings.folds);
1186 let available_space = size(
1187 AvailableSpace::MinContent,
1188 AvailableSpace::Definite(line_height * 0.55),
1189 );
1190 let fold_indicator_size = fold_indicator.layout_as_root(available_space, cx);
1191
1192 let position = point(
1193 gutter_dimensions.width - gutter_dimensions.right_padding,
1194 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1195 );
1196 let centering_offset = point(
1197 (gutter_dimensions.right_padding + gutter_dimensions.margin
1198 - fold_indicator_size.width)
1199 / 2.,
1200 (line_height - fold_indicator_size.height) / 2.,
1201 );
1202 let origin = gutter_hitbox.origin + position + centering_offset;
1203 fold_indicator.prepaint_as_root(origin, available_space, cx);
1204 }
1205 }
1206 }
1207
1208 #[allow(clippy::too_many_arguments)]
1209 fn prepaint_flap_trailers(
1210 &self,
1211 trailers: Vec<Option<AnyElement>>,
1212 lines: &[LineWithInvisibles],
1213 line_height: Pixels,
1214 content_origin: gpui::Point<Pixels>,
1215 scroll_pixel_position: gpui::Point<Pixels>,
1216 em_width: Pixels,
1217 cx: &mut WindowContext,
1218 ) -> Vec<Option<FlapTrailerLayout>> {
1219 trailers
1220 .into_iter()
1221 .enumerate()
1222 .map(|(ix, element)| {
1223 let mut element = element?;
1224 let available_space = size(
1225 AvailableSpace::MinContent,
1226 AvailableSpace::Definite(line_height),
1227 );
1228 let size = element.layout_as_root(available_space, cx);
1229
1230 let line = &lines[ix].line;
1231 let padding = if line.width == Pixels::ZERO {
1232 Pixels::ZERO
1233 } else {
1234 4. * em_width
1235 };
1236 let position = point(
1237 scroll_pixel_position.x + line.width + padding,
1238 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1239 );
1240 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1241 let origin = content_origin + position + centering_offset;
1242 element.prepaint_as_root(origin, available_space, cx);
1243 Some(FlapTrailerLayout {
1244 element,
1245 bounds: Bounds::new(origin, size),
1246 })
1247 })
1248 .collect()
1249 }
1250
1251 // Folds contained in a hunk are ignored apart from shrinking visual size
1252 // If a fold contains any hunks then that fold line is marked as modified
1253 fn layout_git_gutters(
1254 &self,
1255 line_height: Pixels,
1256 gutter_hitbox: &Hitbox,
1257 display_rows: Range<DisplayRow>,
1258 snapshot: &EditorSnapshot,
1259 cx: &mut WindowContext,
1260 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1261 let buffer_snapshot = &snapshot.buffer_snapshot;
1262
1263 let buffer_start_row = MultiBufferRow(
1264 DisplayPoint::new(display_rows.start, 0)
1265 .to_point(snapshot)
1266 .row,
1267 );
1268 let buffer_end_row = MultiBufferRow(
1269 DisplayPoint::new(display_rows.end, 0)
1270 .to_point(snapshot)
1271 .row,
1272 );
1273
1274 let expanded_hunk_display_rows = self.editor.update(cx, |editor, _| {
1275 editor
1276 .expanded_hunks
1277 .hunks(false)
1278 .map(|expanded_hunk| {
1279 let start_row = expanded_hunk
1280 .hunk_range
1281 .start
1282 .to_display_point(snapshot)
1283 .row();
1284 let end_row = expanded_hunk
1285 .hunk_range
1286 .end
1287 .to_display_point(snapshot)
1288 .row();
1289 (start_row, end_row)
1290 })
1291 .collect::<HashMap<_, _>>()
1292 });
1293
1294 buffer_snapshot
1295 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1296 .map(|hunk| diff_hunk_to_display(&hunk, snapshot))
1297 .dedup()
1298 .map(|hunk| {
1299 let hitbox = if let DisplayDiffHunk::Unfolded {
1300 display_row_range, ..
1301 } = &hunk
1302 {
1303 let was_expanded = expanded_hunk_display_rows
1304 .get(&display_row_range.start)
1305 .map(|expanded_end_row| expanded_end_row == &display_row_range.end)
1306 .unwrap_or(false);
1307 if was_expanded {
1308 None
1309 } else {
1310 let hunk_bounds = Self::diff_hunk_bounds(
1311 &snapshot,
1312 line_height,
1313 gutter_hitbox.bounds,
1314 &hunk,
1315 );
1316 Some(cx.insert_hitbox(hunk_bounds, true))
1317 }
1318 } else {
1319 None
1320 };
1321 (hunk, hitbox)
1322 })
1323 .collect()
1324 }
1325
1326 #[allow(clippy::too_many_arguments)]
1327 fn layout_inline_blame(
1328 &self,
1329 display_row: DisplayRow,
1330 display_snapshot: &DisplaySnapshot,
1331 line_layout: &LineWithInvisibles,
1332 flap_trailer: Option<&FlapTrailerLayout>,
1333 em_width: Pixels,
1334 content_origin: gpui::Point<Pixels>,
1335 scroll_pixel_position: gpui::Point<Pixels>,
1336 line_height: Pixels,
1337 cx: &mut WindowContext,
1338 ) -> Option<AnyElement> {
1339 if !self
1340 .editor
1341 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1342 {
1343 return None;
1344 }
1345
1346 let workspace = self
1347 .editor
1348 .read(cx)
1349 .workspace
1350 .as_ref()
1351 .map(|(w, _)| w.clone());
1352
1353 let display_point = DisplayPoint::new(display_row, 0);
1354 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1355
1356 let blame = self.editor.read(cx).blame.clone()?;
1357 let blame_entry = blame
1358 .update(cx, |blame, cx| {
1359 blame.blame_for_rows([Some(buffer_row)], cx).next()
1360 })
1361 .flatten()?;
1362
1363 let mut element =
1364 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1365
1366 let start_y = content_origin.y
1367 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1368
1369 let start_x = {
1370 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1371
1372 let line_end = if let Some(flap_trailer) = flap_trailer {
1373 flap_trailer.bounds.right()
1374 } else {
1375 content_origin.x - scroll_pixel_position.x + line_layout.line.width
1376 };
1377 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1378
1379 let min_column_in_pixels = ProjectSettings::get_global(cx)
1380 .git
1381 .inline_blame
1382 .and_then(|settings| settings.min_column)
1383 .map(|col| self.column_pixels(col as usize, cx))
1384 .unwrap_or(px(0.));
1385 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1386
1387 cmp::max(padded_line_end, min_start)
1388 };
1389
1390 let absolute_offset = point(start_x, start_y);
1391 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1392
1393 element.prepaint_as_root(absolute_offset, available_space, cx);
1394
1395 Some(element)
1396 }
1397
1398 #[allow(clippy::too_many_arguments)]
1399 fn layout_blame_entries(
1400 &self,
1401 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1402 em_width: Pixels,
1403 scroll_position: gpui::Point<f32>,
1404 line_height: Pixels,
1405 gutter_hitbox: &Hitbox,
1406 max_width: Option<Pixels>,
1407 cx: &mut WindowContext,
1408 ) -> Option<Vec<AnyElement>> {
1409 if !self
1410 .editor
1411 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1412 {
1413 return None;
1414 }
1415
1416 let blame = self.editor.read(cx).blame.clone()?;
1417 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1418 blame.blame_for_rows(buffer_rows, cx).collect()
1419 });
1420
1421 let width = if let Some(max_width) = max_width {
1422 AvailableSpace::Definite(max_width)
1423 } else {
1424 AvailableSpace::MaxContent
1425 };
1426 let scroll_top = scroll_position.y * line_height;
1427 let start_x = em_width * 1;
1428
1429 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1430
1431 let shaped_lines = blamed_rows
1432 .into_iter()
1433 .enumerate()
1434 .flat_map(|(ix, blame_entry)| {
1435 if let Some(blame_entry) = blame_entry {
1436 let mut element = render_blame_entry(
1437 ix,
1438 &blame,
1439 blame_entry,
1440 &self.style,
1441 &mut last_used_color,
1442 self.editor.clone(),
1443 cx,
1444 );
1445
1446 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1447 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1448
1449 element.prepaint_as_root(
1450 absolute_offset,
1451 size(width, AvailableSpace::MinContent),
1452 cx,
1453 );
1454
1455 Some(element)
1456 } else {
1457 None
1458 }
1459 })
1460 .collect();
1461
1462 Some(shaped_lines)
1463 }
1464
1465 #[allow(clippy::too_many_arguments)]
1466 fn layout_indent_guides(
1467 &self,
1468 content_origin: gpui::Point<Pixels>,
1469 text_origin: gpui::Point<Pixels>,
1470 visible_buffer_range: Range<MultiBufferRow>,
1471 scroll_pixel_position: gpui::Point<Pixels>,
1472 line_height: Pixels,
1473 snapshot: &DisplaySnapshot,
1474 cx: &mut WindowContext,
1475 ) -> Option<Vec<IndentGuideLayout>> {
1476 let indent_guides =
1477 self.editor
1478 .read(cx)
1479 .indent_guides(visible_buffer_range, snapshot, cx)?;
1480
1481 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1482 editor
1483 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1484 .unwrap_or_default()
1485 });
1486
1487 Some(
1488 indent_guides
1489 .into_iter()
1490 .enumerate()
1491 .filter_map(|(i, indent_guide)| {
1492 let indent_size = self.column_pixels(indent_guide.indent_size as usize, cx);
1493 let total_width = indent_size * px(indent_guide.depth as f32);
1494
1495 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1496 if start_x >= text_origin.x {
1497 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1498 indent_guide.multibuffer_row_range.clone(),
1499 line_height,
1500 snapshot,
1501 );
1502
1503 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1504
1505 Some(IndentGuideLayout {
1506 origin: point(start_x, start_y),
1507 length,
1508 indent_size,
1509 depth: indent_guide.depth,
1510 active: active_indent_guide_indices.contains(&i),
1511 })
1512 } else {
1513 None
1514 }
1515 })
1516 .collect(),
1517 )
1518 }
1519
1520 fn calculate_indent_guide_bounds(
1521 row_range: Range<MultiBufferRow>,
1522 line_height: Pixels,
1523 snapshot: &DisplaySnapshot,
1524 ) -> (gpui::Pixels, gpui::Pixels) {
1525 let start_point = Point::new(row_range.start.0, 0);
1526 let end_point = Point::new(row_range.end.0, 0);
1527
1528 let row_range = start_point.to_display_point(snapshot).row()
1529 ..end_point.to_display_point(snapshot).row();
1530
1531 let mut prev_line = start_point;
1532 prev_line.row = prev_line.row.saturating_sub(1);
1533 let prev_line = prev_line.to_display_point(snapshot).row();
1534
1535 let mut cons_line = end_point;
1536 cons_line.row += 1;
1537 let cons_line = cons_line.to_display_point(snapshot).row();
1538
1539 let mut offset_y = row_range.start.0 as f32 * line_height;
1540 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1541
1542 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1543 // we want to extend the indent guide to the start of the block.
1544 let mut block_height = 0;
1545 let mut block_offset = 0;
1546 let mut found_excerpt_header = false;
1547 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1548 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
1549 found_excerpt_header = true;
1550 break;
1551 }
1552 block_offset += block.height();
1553 block_height += block.height();
1554 }
1555 if !found_excerpt_header {
1556 offset_y -= block_offset as f32 * line_height;
1557 length += block_height as f32 * line_height;
1558 }
1559
1560 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1561 // we want to ensure that the indent guide stops before the excerpt header.
1562 let mut block_height = 0;
1563 let mut found_excerpt_header = false;
1564 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1565 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
1566 found_excerpt_header = true;
1567 }
1568 block_height += block.height();
1569 }
1570 if found_excerpt_header {
1571 length -= block_height as f32 * line_height;
1572 }
1573
1574 (offset_y, length)
1575 }
1576
1577 fn layout_run_indicators(
1578 &self,
1579 line_height: Pixels,
1580 scroll_pixel_position: gpui::Point<Pixels>,
1581 gutter_dimensions: &GutterDimensions,
1582 gutter_hitbox: &Hitbox,
1583 snapshot: &EditorSnapshot,
1584 cx: &mut WindowContext,
1585 ) -> Vec<AnyElement> {
1586 self.editor.update(cx, |editor, cx| {
1587 let active_task_indicator_row =
1588 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1589 deployed_from_indicator,
1590 actions,
1591 ..
1592 })) = editor.context_menu.read().as_ref()
1593 {
1594 actions
1595 .tasks
1596 .as_ref()
1597 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1598 .or_else(|| *deployed_from_indicator)
1599 } else {
1600 None
1601 };
1602 editor
1603 .tasks
1604 .iter()
1605 .filter_map(|(_, (multibuffer_offset, _))| {
1606 let multibuffer_point = multibuffer_offset.to_point(&snapshot.buffer_snapshot);
1607 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1608 if snapshot.is_line_folded(multibuffer_row) {
1609 return None;
1610 }
1611 let display_row = multibuffer_point.to_display_point(snapshot).row();
1612 let button = editor.render_run_indicator(
1613 &self.style,
1614 Some(display_row) == active_task_indicator_row,
1615 display_row,
1616 cx,
1617 );
1618
1619 let button = prepaint_gutter_button(
1620 button,
1621 display_row,
1622 line_height,
1623 gutter_dimensions,
1624 scroll_pixel_position,
1625 gutter_hitbox,
1626 cx,
1627 );
1628 Some(button)
1629 })
1630 .collect_vec()
1631 })
1632 }
1633
1634 fn layout_code_actions_indicator(
1635 &self,
1636 line_height: Pixels,
1637 newest_selection_head: DisplayPoint,
1638 scroll_pixel_position: gpui::Point<Pixels>,
1639 gutter_dimensions: &GutterDimensions,
1640 gutter_hitbox: &Hitbox,
1641 cx: &mut WindowContext,
1642 ) -> Option<AnyElement> {
1643 let mut active = false;
1644 let mut button = None;
1645 let row = newest_selection_head.row();
1646 self.editor.update(cx, |editor, cx| {
1647 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1648 deployed_from_indicator,
1649 ..
1650 })) = editor.context_menu.read().as_ref()
1651 {
1652 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1653 };
1654 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1655 });
1656
1657 let button = prepaint_gutter_button(
1658 button?,
1659 row,
1660 line_height,
1661 gutter_dimensions,
1662 scroll_pixel_position,
1663 gutter_hitbox,
1664 cx,
1665 );
1666
1667 Some(button)
1668 }
1669
1670 fn get_participant_color(
1671 participant_index: Option<ParticipantIndex>,
1672 cx: &WindowContext,
1673 ) -> PlayerColor {
1674 if let Some(index) = participant_index {
1675 cx.theme().players().color_for_participant(index.0)
1676 } else {
1677 cx.theme().players().absent()
1678 }
1679 }
1680
1681 fn calculate_relative_line_numbers(
1682 &self,
1683 snapshot: &EditorSnapshot,
1684 rows: &Range<DisplayRow>,
1685 relative_to: Option<DisplayRow>,
1686 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1687 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1688 let Some(relative_to) = relative_to else {
1689 return relative_rows;
1690 };
1691
1692 let start = rows.start.min(relative_to);
1693 let end = rows.end.max(relative_to);
1694
1695 let buffer_rows = snapshot
1696 .buffer_rows(start)
1697 .take(1 + end.minus(start) as usize)
1698 .collect::<Vec<_>>();
1699
1700 let head_idx = relative_to.minus(start);
1701 let mut delta = 1;
1702 let mut i = head_idx + 1;
1703 while i < buffer_rows.len() as u32 {
1704 if buffer_rows[i as usize].is_some() {
1705 if rows.contains(&DisplayRow(i + start.0)) {
1706 relative_rows.insert(DisplayRow(i + start.0), delta);
1707 }
1708 delta += 1;
1709 }
1710 i += 1;
1711 }
1712 delta = 1;
1713 i = head_idx.min(buffer_rows.len() as u32 - 1);
1714 while i > 0 && buffer_rows[i as usize].is_none() {
1715 i -= 1;
1716 }
1717
1718 while i > 0 {
1719 i -= 1;
1720 if buffer_rows[i as usize].is_some() {
1721 if rows.contains(&DisplayRow(i + start.0)) {
1722 relative_rows.insert(DisplayRow(i + start.0), delta);
1723 }
1724 delta += 1;
1725 }
1726 }
1727
1728 relative_rows
1729 }
1730
1731 fn layout_line_numbers(
1732 &self,
1733 rows: Range<DisplayRow>,
1734 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1735 active_rows: &BTreeMap<DisplayRow, bool>,
1736 newest_selection_head: Option<DisplayPoint>,
1737 snapshot: &EditorSnapshot,
1738 cx: &mut WindowContext,
1739 ) -> Vec<Option<ShapedLine>> {
1740 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
1741 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
1742 });
1743 if !include_line_numbers {
1744 return Vec::new();
1745 }
1746
1747 let editor = self.editor.read(cx);
1748 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1749 let newest = editor.selections.newest::<Point>(cx);
1750 SelectionLayout::new(
1751 newest,
1752 editor.selections.line_mode,
1753 editor.cursor_shape,
1754 &snapshot.display_snapshot,
1755 true,
1756 true,
1757 None,
1758 )
1759 .head
1760 });
1761 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1762
1763 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1764 let relative_to = if is_relative {
1765 Some(newest_selection_head.row())
1766 } else {
1767 None
1768 };
1769 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
1770 let mut line_number = String::new();
1771 buffer_rows
1772 .into_iter()
1773 .enumerate()
1774 .map(|(ix, multibuffer_row)| {
1775 let multibuffer_row = multibuffer_row?;
1776 let display_row = DisplayRow(rows.start.0 + ix as u32);
1777 let color = if active_rows.contains_key(&display_row) {
1778 cx.theme().colors().editor_active_line_number
1779 } else {
1780 cx.theme().colors().editor_line_number
1781 };
1782 line_number.clear();
1783 let default_number = multibuffer_row.0 + 1;
1784 let number = relative_rows
1785 .get(&DisplayRow(ix as u32 + rows.start.0))
1786 .unwrap_or(&default_number);
1787 write!(&mut line_number, "{number}").unwrap();
1788 let run = TextRun {
1789 len: line_number.len(),
1790 font: self.style.text.font(),
1791 color,
1792 background_color: None,
1793 underline: None,
1794 strikethrough: None,
1795 };
1796 let shaped_line = cx
1797 .text_system()
1798 .shape_line(line_number.clone().into(), font_size, &[run])
1799 .unwrap();
1800 Some(shaped_line)
1801 })
1802 .collect()
1803 }
1804
1805 fn layout_gutter_fold_toggles(
1806 &self,
1807 rows: Range<DisplayRow>,
1808 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1809 active_rows: &BTreeMap<DisplayRow, bool>,
1810 snapshot: &EditorSnapshot,
1811 cx: &mut WindowContext,
1812 ) -> Vec<Option<AnyElement>> {
1813 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
1814 && snapshot.mode == EditorMode::Full
1815 && self.editor.read(cx).is_singleton(cx);
1816 if include_fold_statuses {
1817 buffer_rows
1818 .into_iter()
1819 .enumerate()
1820 .map(|(ix, row)| {
1821 if let Some(multibuffer_row) = row {
1822 let display_row = DisplayRow(rows.start.0 + ix as u32);
1823 let active = active_rows.contains_key(&display_row);
1824 snapshot.render_fold_toggle(
1825 multibuffer_row,
1826 active,
1827 self.editor.clone(),
1828 cx,
1829 )
1830 } else {
1831 None
1832 }
1833 })
1834 .collect()
1835 } else {
1836 Vec::new()
1837 }
1838 }
1839
1840 fn layout_flap_trailers(
1841 &self,
1842 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1843 snapshot: &EditorSnapshot,
1844 cx: &mut WindowContext,
1845 ) -> Vec<Option<AnyElement>> {
1846 buffer_rows
1847 .into_iter()
1848 .map(|row| {
1849 if let Some(multibuffer_row) = row {
1850 snapshot.render_flap_trailer(multibuffer_row, cx)
1851 } else {
1852 None
1853 }
1854 })
1855 .collect()
1856 }
1857
1858 fn layout_lines(
1859 &self,
1860 rows: Range<DisplayRow>,
1861 line_number_layouts: &[Option<ShapedLine>],
1862 snapshot: &EditorSnapshot,
1863 cx: &WindowContext,
1864 ) -> Vec<LineWithInvisibles> {
1865 if rows.start >= rows.end {
1866 return Vec::new();
1867 }
1868
1869 // Show the placeholder when the editor is empty
1870 if snapshot.is_empty() {
1871 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1872 let placeholder_color = cx.theme().colors().text_placeholder;
1873 let placeholder_text = snapshot.placeholder_text();
1874
1875 let placeholder_lines = placeholder_text
1876 .as_ref()
1877 .map_or("", AsRef::as_ref)
1878 .split('\n')
1879 .skip(rows.start.0 as usize)
1880 .chain(iter::repeat(""))
1881 .take(rows.len());
1882 placeholder_lines
1883 .filter_map(move |line| {
1884 let run = TextRun {
1885 len: line.len(),
1886 font: self.style.text.font(),
1887 color: placeholder_color,
1888 background_color: None,
1889 underline: Default::default(),
1890 strikethrough: None,
1891 };
1892 cx.text_system()
1893 .shape_line(line.to_string().into(), font_size, &[run])
1894 .log_err()
1895 })
1896 .map(|line| LineWithInvisibles {
1897 line,
1898 invisibles: Vec::new(),
1899 })
1900 .collect()
1901 } else {
1902 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1903 LineWithInvisibles::from_chunks(
1904 chunks,
1905 &self.style.text,
1906 MAX_LINE_LEN,
1907 rows.len(),
1908 line_number_layouts,
1909 snapshot.mode,
1910 cx,
1911 )
1912 }
1913 }
1914
1915 #[allow(clippy::too_many_arguments)]
1916 fn build_blocks(
1917 &self,
1918 rows: Range<DisplayRow>,
1919 snapshot: &EditorSnapshot,
1920 hitbox: &Hitbox,
1921 text_hitbox: &Hitbox,
1922 scroll_width: &mut Pixels,
1923 gutter_dimensions: &GutterDimensions,
1924 em_width: Pixels,
1925 text_x: Pixels,
1926 line_height: Pixels,
1927 line_layouts: &[LineWithInvisibles],
1928 cx: &mut WindowContext,
1929 ) -> Vec<BlockLayout> {
1930 let mut block_id = 0;
1931 let (fixed_blocks, non_fixed_blocks) = snapshot
1932 .blocks_in_range(rows.clone())
1933 .partition::<Vec<_>, _>(|(_, block)| match block {
1934 TransformBlock::ExcerptHeader { .. } => false,
1935 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1936 });
1937
1938 let render_block = |block: &TransformBlock,
1939 available_space: Size<AvailableSpace>,
1940 block_id: usize,
1941 block_row_start: DisplayRow,
1942 cx: &mut WindowContext| {
1943 let mut element = match block {
1944 TransformBlock::Custom(block) => {
1945 let align_to = block
1946 .position()
1947 .to_point(&snapshot.buffer_snapshot)
1948 .to_display_point(snapshot);
1949 let anchor_x = text_x
1950 + if rows.contains(&align_to.row()) {
1951 line_layouts[align_to.row().minus(rows.start) as usize]
1952 .line
1953 .x_for_index(align_to.column() as usize)
1954 } else {
1955 layout_line(align_to.row(), snapshot, &self.style, cx)
1956 .unwrap()
1957 .x_for_index(align_to.column() as usize)
1958 };
1959
1960 block.render(&mut BlockContext {
1961 context: cx,
1962 anchor_x,
1963 gutter_dimensions,
1964 line_height,
1965 em_width,
1966 block_id,
1967 max_width: text_hitbox.size.width.max(*scroll_width),
1968 editor_style: &self.style,
1969 })
1970 }
1971
1972 TransformBlock::ExcerptHeader {
1973 buffer,
1974 range,
1975 starts_new_buffer,
1976 height,
1977 id,
1978 ..
1979 } => {
1980 let include_root = self
1981 .editor
1982 .read(cx)
1983 .project
1984 .as_ref()
1985 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1986 .unwrap_or_default();
1987
1988 #[derive(Clone)]
1989 struct JumpData {
1990 position: Point,
1991 anchor: text::Anchor,
1992 path: ProjectPath,
1993 line_offset_from_top: u32,
1994 }
1995
1996 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
1997 let jump_path = ProjectPath {
1998 worktree_id: file.worktree_id(cx),
1999 path: file.path.clone(),
2000 };
2001 let jump_anchor = range
2002 .primary
2003 .as_ref()
2004 .map_or(range.context.start, |primary| primary.start);
2005
2006 let excerpt_start = range.context.start;
2007 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2008 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
2009 0
2010 } else {
2011 let excerpt_start_row =
2012 language::ToPoint::to_point(&jump_anchor, buffer).row;
2013 jump_position.row - excerpt_start_row
2014 };
2015
2016 let line_offset_from_top =
2017 block_row_start.0 + *height as u32 + offset_from_excerpt_start
2018 - snapshot
2019 .scroll_anchor
2020 .scroll_position(&snapshot.display_snapshot)
2021 .y as u32;
2022
2023 JumpData {
2024 position: jump_position,
2025 anchor: jump_anchor,
2026 path: jump_path,
2027 line_offset_from_top,
2028 }
2029 });
2030
2031 let element = if *starts_new_buffer {
2032 let path = buffer.resolve_file_path(cx, include_root);
2033 let mut filename = None;
2034 let mut parent_path = None;
2035 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2036 if let Some(path) = path {
2037 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2038 parent_path = path
2039 .parent()
2040 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2041 }
2042
2043 v_flex()
2044 .id(("path header container", block_id))
2045 .size_full()
2046 .justify_center()
2047 .p(gpui::px(6.))
2048 .child(
2049 h_flex()
2050 .id("path header block")
2051 .size_full()
2052 .pl(gpui::px(12.))
2053 .pr(gpui::px(8.))
2054 .rounded_md()
2055 .shadow_md()
2056 .border_1()
2057 .border_color(cx.theme().colors().border)
2058 .bg(cx.theme().colors().editor_subheader_background)
2059 .justify_between()
2060 .hover(|style| style.bg(cx.theme().colors().element_hover))
2061 .child(
2062 h_flex().gap_3().child(
2063 h_flex()
2064 .gap_2()
2065 .child(
2066 filename
2067 .map(SharedString::from)
2068 .unwrap_or_else(|| "untitled".into()),
2069 )
2070 .when_some(parent_path, |then, path| {
2071 then.child(
2072 div().child(path).text_color(
2073 cx.theme().colors().text_muted,
2074 ),
2075 )
2076 }),
2077 ),
2078 )
2079 .when_some(jump_data.clone(), |this, jump_data| {
2080 this.cursor_pointer()
2081 .tooltip(|cx| {
2082 Tooltip::for_action(
2083 "Jump to File",
2084 &OpenExcerpts,
2085 cx,
2086 )
2087 })
2088 .on_mouse_down(MouseButton::Left, |_, cx| {
2089 cx.stop_propagation()
2090 })
2091 .on_click(cx.listener_for(&self.editor, {
2092 move |editor, _, cx| {
2093 editor.jump(
2094 jump_data.path.clone(),
2095 jump_data.position,
2096 jump_data.anchor,
2097 jump_data.line_offset_from_top,
2098 cx,
2099 );
2100 }
2101 }))
2102 }),
2103 )
2104 } else {
2105 v_flex()
2106 .id(("collapsed context", block_id))
2107 .size_full()
2108 .child(
2109 div()
2110 .flex()
2111 .v_flex()
2112 .justify_start()
2113 .id("jump to collapsed context")
2114 .w(relative(1.0))
2115 .h_full()
2116 .child(
2117 div()
2118 .h_px()
2119 .w_full()
2120 .bg(cx.theme().colors().border_variant)
2121 .group_hover("excerpt-jump-action", |style| {
2122 style.bg(cx.theme().colors().border)
2123 }),
2124 ),
2125 )
2126 .child(
2127 h_flex()
2128 .justify_end()
2129 .flex_none()
2130 .w(
2131 gutter_dimensions.width - (gutter_dimensions.left_padding), // + gutter_dimensions.right_padding)
2132 )
2133 .h_full()
2134 .child(
2135 ButtonLike::new("expand-icon")
2136 .style(ButtonStyle::Transparent)
2137 .child(
2138 svg()
2139 .path(IconName::ExpandVertical.path())
2140 .size(IconSize::XSmall.rems())
2141 .text_color(
2142 cx.theme().colors().editor_line_number,
2143 )
2144 .group("")
2145 .hover(|style| {
2146 style.text_color(
2147 cx.theme()
2148 .colors()
2149 .editor_active_line_number,
2150 )
2151 }),
2152 )
2153 .on_click(cx.listener_for(&self.editor, {
2154 let id = *id;
2155 move |editor, _, cx| {
2156 editor.expand_excerpt(id, cx);
2157 }
2158 }))
2159 .tooltip({
2160 move |cx| {
2161 Tooltip::for_action(
2162 "Expand Excerpt",
2163 &ExpandExcerpts { lines: 0 },
2164 cx,
2165 )
2166 }
2167 }),
2168 ),
2169 )
2170 .group("excerpt-jump-action")
2171 .cursor_pointer()
2172 .when_some(jump_data.clone(), |this, jump_data| {
2173 this.on_click(cx.listener_for(&self.editor, {
2174 let path = jump_data.path.clone();
2175 move |editor, _, cx| {
2176 cx.stop_propagation();
2177
2178 editor.jump(
2179 path.clone(),
2180 jump_data.position,
2181 jump_data.anchor,
2182 jump_data.line_offset_from_top,
2183 cx,
2184 );
2185 }
2186 }))
2187 .tooltip(move |cx| {
2188 Tooltip::for_action(
2189 format!(
2190 "Jump to {}:L{}",
2191 jump_data.path.path.display(),
2192 jump_data.position.row + 1
2193 ),
2194 &OpenExcerpts,
2195 cx,
2196 )
2197 })
2198 })
2199 };
2200 element.into_any()
2201 }
2202 };
2203
2204 let size = element.layout_as_root(available_space, cx);
2205 (element, size)
2206 };
2207
2208 let mut fixed_block_max_width = Pixels::ZERO;
2209 let mut blocks = Vec::new();
2210 for (row, block) in fixed_blocks {
2211 let available_space = size(
2212 AvailableSpace::MinContent,
2213 AvailableSpace::Definite(block.height() as f32 * line_height),
2214 );
2215 let (element, element_size) = render_block(block, available_space, block_id, row, cx);
2216 block_id += 1;
2217 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2218 blocks.push(BlockLayout {
2219 row,
2220 element,
2221 available_space,
2222 style: BlockStyle::Fixed,
2223 });
2224 }
2225 for (row, block) in non_fixed_blocks {
2226 let style = match block {
2227 TransformBlock::Custom(block) => block.style(),
2228 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2229 };
2230 let width = match style {
2231 BlockStyle::Sticky => hitbox.size.width,
2232 BlockStyle::Flex => hitbox
2233 .size
2234 .width
2235 .max(fixed_block_max_width)
2236 .max(gutter_dimensions.width + *scroll_width),
2237 BlockStyle::Fixed => unreachable!(),
2238 };
2239 let available_space = size(
2240 AvailableSpace::Definite(width),
2241 AvailableSpace::Definite(block.height() as f32 * line_height),
2242 );
2243 let (element, _) = render_block(block, available_space, block_id, row, cx);
2244 block_id += 1;
2245 blocks.push(BlockLayout {
2246 row,
2247 element,
2248 available_space,
2249 style,
2250 });
2251 }
2252
2253 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2254 blocks
2255 }
2256
2257 fn layout_blocks(
2258 &self,
2259 blocks: &mut Vec<BlockLayout>,
2260 hitbox: &Hitbox,
2261 line_height: Pixels,
2262 scroll_pixel_position: gpui::Point<Pixels>,
2263 cx: &mut WindowContext,
2264 ) {
2265 for block in blocks {
2266 let mut origin = hitbox.origin
2267 + point(
2268 Pixels::ZERO,
2269 block.row.as_f32() * line_height - scroll_pixel_position.y,
2270 );
2271 if !matches!(block.style, BlockStyle::Sticky) {
2272 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2273 }
2274 block
2275 .element
2276 .prepaint_as_root(origin, block.available_space, cx);
2277 }
2278 }
2279
2280 #[allow(clippy::too_many_arguments)]
2281 fn layout_context_menu(
2282 &self,
2283 line_height: Pixels,
2284 hitbox: &Hitbox,
2285 text_hitbox: &Hitbox,
2286 content_origin: gpui::Point<Pixels>,
2287 start_row: DisplayRow,
2288 scroll_pixel_position: gpui::Point<Pixels>,
2289 line_layouts: &[LineWithInvisibles],
2290 newest_selection_head: DisplayPoint,
2291 gutter_overshoot: Pixels,
2292 cx: &mut WindowContext,
2293 ) -> bool {
2294 let max_height = cmp::min(
2295 12. * line_height,
2296 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
2297 );
2298 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
2299 if editor.context_menu_visible() {
2300 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
2301 } else {
2302 None
2303 }
2304 }) else {
2305 return false;
2306 };
2307
2308 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
2309 let context_menu_size = context_menu.layout_as_root(available_space, cx);
2310
2311 let (x, y) = match position {
2312 crate::ContextMenuOrigin::EditorPoint(point) => {
2313 let cursor_row_layout = &line_layouts[point.row().minus(start_row) as usize].line;
2314 let x = cursor_row_layout.x_for_index(point.column() as usize)
2315 - scroll_pixel_position.x;
2316 let y = point.row().next_row().as_f32() * line_height - scroll_pixel_position.y;
2317 (x, y)
2318 }
2319 crate::ContextMenuOrigin::GutterIndicator(row) => {
2320 // Context menu was spawned via a click on a gutter. Ensure it's a bit closer to the indicator than just a plain first column of the
2321 // text field.
2322 let x = -gutter_overshoot;
2323 let y = row.next_row().as_f32() * line_height - scroll_pixel_position.y;
2324 (x, y)
2325 }
2326 };
2327
2328 let mut list_origin = content_origin + point(x, y);
2329 let list_width = context_menu_size.width;
2330 let list_height = context_menu_size.height;
2331
2332 // Snap the right edge of the list to the right edge of the window if
2333 // its horizontal bounds overflow.
2334 if list_origin.x + list_width > cx.viewport_size().width {
2335 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
2336 }
2337
2338 if list_origin.y + list_height > text_hitbox.lower_right().y {
2339 list_origin.y -= line_height + list_height;
2340 }
2341
2342 cx.defer_draw(context_menu, list_origin, 1);
2343 true
2344 }
2345
2346 fn layout_mouse_context_menu(&self, cx: &mut WindowContext) -> Option<AnyElement> {
2347 let mouse_context_menu = self.editor.read(cx).mouse_context_menu.as_ref()?;
2348 let mut element = deferred(
2349 anchored()
2350 .position(mouse_context_menu.position)
2351 .child(mouse_context_menu.context_menu.clone())
2352 .anchor(AnchorCorner::TopLeft)
2353 .snap_to_window(),
2354 )
2355 .with_priority(1)
2356 .into_any();
2357
2358 element.prepaint_as_root(gpui::Point::default(), AvailableSpace::min_size(), cx);
2359 Some(element)
2360 }
2361
2362 #[allow(clippy::too_many_arguments)]
2363 fn layout_hover_popovers(
2364 &self,
2365 snapshot: &EditorSnapshot,
2366 hitbox: &Hitbox,
2367 text_hitbox: &Hitbox,
2368 visible_display_row_range: Range<DisplayRow>,
2369 content_origin: gpui::Point<Pixels>,
2370 scroll_pixel_position: gpui::Point<Pixels>,
2371 line_layouts: &[LineWithInvisibles],
2372 line_height: Pixels,
2373 em_width: Pixels,
2374 cx: &mut WindowContext,
2375 ) {
2376 struct MeasuredHoverPopover {
2377 element: AnyElement,
2378 size: Size<Pixels>,
2379 horizontal_offset: Pixels,
2380 }
2381
2382 let max_size = size(
2383 (120. * em_width) // Default size
2384 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2385 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2386 (16. * line_height) // Default size
2387 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2388 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2389 );
2390
2391 let hover_popovers = self.editor.update(cx, |editor, cx| {
2392 editor.hover_state.render(
2393 &snapshot,
2394 &self.style,
2395 visible_display_row_range.clone(),
2396 max_size,
2397 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2398 cx,
2399 )
2400 });
2401 let Some((position, hover_popovers)) = hover_popovers else {
2402 return;
2403 };
2404
2405 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
2406
2407 // This is safe because we check on layout whether the required row is available
2408 let hovered_row_layout =
2409 &line_layouts[position.row().minus(visible_display_row_range.start) as usize].line;
2410
2411 // Compute Hovered Point
2412 let x =
2413 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
2414 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
2415 let hovered_point = content_origin + point(x, y);
2416
2417 let mut overall_height = Pixels::ZERO;
2418 let mut measured_hover_popovers = Vec::new();
2419 for mut hover_popover in hover_popovers {
2420 let size = hover_popover.layout_as_root(available_space, cx);
2421 let horizontal_offset =
2422 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
2423
2424 overall_height += HOVER_POPOVER_GAP + size.height;
2425
2426 measured_hover_popovers.push(MeasuredHoverPopover {
2427 element: hover_popover,
2428 size,
2429 horizontal_offset,
2430 });
2431 }
2432 overall_height += HOVER_POPOVER_GAP;
2433
2434 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
2435 let mut occlusion = div()
2436 .size_full()
2437 .occlude()
2438 .on_mouse_move(|_, cx| cx.stop_propagation())
2439 .into_any_element();
2440 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
2441 cx.defer_draw(occlusion, origin, 2);
2442 }
2443
2444 if hovered_point.y > overall_height {
2445 // There is enough space above. Render popovers above the hovered point
2446 let mut current_y = hovered_point.y;
2447 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2448 let size = popover.size;
2449 let popover_origin = point(
2450 hovered_point.x + popover.horizontal_offset,
2451 current_y - size.height,
2452 );
2453
2454 cx.defer_draw(popover.element, popover_origin, 2);
2455 if position != itertools::Position::Last {
2456 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
2457 draw_occluder(size.width, origin, cx);
2458 }
2459
2460 current_y = popover_origin.y - HOVER_POPOVER_GAP;
2461 }
2462 } else {
2463 // There is not enough space above. Render popovers below the hovered point
2464 let mut current_y = hovered_point.y + line_height;
2465 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2466 let size = popover.size;
2467 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
2468
2469 cx.defer_draw(popover.element, popover_origin, 2);
2470 if position != itertools::Position::Last {
2471 let origin = point(popover_origin.x, popover_origin.y + size.height);
2472 draw_occluder(size.width, origin, cx);
2473 }
2474
2475 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
2476 }
2477 }
2478 }
2479
2480 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
2481 cx.paint_layer(layout.hitbox.bounds, |cx| {
2482 let scroll_top = layout.position_map.snapshot.scroll_position().y;
2483 let gutter_bg = cx.theme().colors().editor_gutter_background;
2484 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
2485 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
2486
2487 if let EditorMode::Full = layout.mode {
2488 let mut active_rows = layout.active_rows.iter().peekable();
2489 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
2490 let mut end_row = start_row.0;
2491 while active_rows
2492 .peek()
2493 .map_or(false, |(active_row, has_selection)| {
2494 active_row.0 == end_row + 1
2495 && *has_selection == contains_non_empty_selection
2496 })
2497 {
2498 active_rows.next().unwrap();
2499 end_row += 1;
2500 }
2501
2502 if !contains_non_empty_selection {
2503 let highlight_h_range =
2504 match layout.position_map.snapshot.current_line_highlight {
2505 CurrentLineHighlight::Gutter => Some(Range {
2506 start: layout.hitbox.left(),
2507 end: layout.gutter_hitbox.right(),
2508 }),
2509 CurrentLineHighlight::Line => Some(Range {
2510 start: layout.text_hitbox.bounds.left(),
2511 end: layout.text_hitbox.bounds.right(),
2512 }),
2513 CurrentLineHighlight::All => Some(Range {
2514 start: layout.hitbox.left(),
2515 end: layout.hitbox.right(),
2516 }),
2517 CurrentLineHighlight::None => None,
2518 };
2519 if let Some(range) = highlight_h_range {
2520 let active_line_bg = cx.theme().colors().editor_active_line_background;
2521 let bounds = Bounds {
2522 origin: point(
2523 range.start,
2524 layout.hitbox.origin.y
2525 + (start_row.as_f32() - scroll_top)
2526 * layout.position_map.line_height,
2527 ),
2528 size: size(
2529 range.end - range.start,
2530 layout.position_map.line_height
2531 * (end_row - start_row.0 + 1) as f32,
2532 ),
2533 };
2534 cx.paint_quad(fill(bounds, active_line_bg));
2535 }
2536 }
2537 }
2538
2539 let mut paint_highlight =
2540 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
2541 let origin = point(
2542 layout.hitbox.origin.x,
2543 layout.hitbox.origin.y
2544 + (highlight_row_start.as_f32() - scroll_top)
2545 * layout.position_map.line_height,
2546 );
2547 let size = size(
2548 layout.hitbox.size.width,
2549 layout.position_map.line_height
2550 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
2551 );
2552 cx.paint_quad(fill(Bounds { origin, size }, color));
2553 };
2554
2555 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
2556 for (&new_row, &new_color) in &layout.highlighted_rows {
2557 match &mut current_paint {
2558 Some((current_color, current_range)) => {
2559 let current_color = *current_color;
2560 let new_range_started = current_color != new_color
2561 || current_range.end.next_row() != new_row;
2562 if new_range_started {
2563 paint_highlight(
2564 current_range.start,
2565 current_range.end,
2566 current_color,
2567 );
2568 current_paint = Some((new_color, new_row..new_row));
2569 continue;
2570 } else {
2571 current_range.end = current_range.end.next_row();
2572 }
2573 }
2574 None => current_paint = Some((new_color, new_row..new_row)),
2575 };
2576 }
2577 if let Some((color, range)) = current_paint {
2578 paint_highlight(range.start, range.end, color);
2579 }
2580
2581 let scroll_left =
2582 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
2583
2584 for (wrap_position, active) in layout.wrap_guides.iter() {
2585 let x = (layout.text_hitbox.origin.x
2586 + *wrap_position
2587 + layout.position_map.em_width / 2.)
2588 - scroll_left;
2589
2590 let show_scrollbars = layout
2591 .scrollbar_layout
2592 .as_ref()
2593 .map_or(false, |scrollbar| scrollbar.visible);
2594 if x < layout.text_hitbox.origin.x
2595 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
2596 {
2597 continue;
2598 }
2599
2600 let color = if *active {
2601 cx.theme().colors().editor_active_wrap_guide
2602 } else {
2603 cx.theme().colors().editor_wrap_guide
2604 };
2605 cx.paint_quad(fill(
2606 Bounds {
2607 origin: point(x, layout.text_hitbox.origin.y),
2608 size: size(px(1.), layout.text_hitbox.size.height),
2609 },
2610 color,
2611 ));
2612 }
2613 }
2614 })
2615 }
2616
2617 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2618 let Some(indent_guides) = &layout.indent_guides else {
2619 return;
2620 };
2621
2622 let settings = self
2623 .editor
2624 .read(cx)
2625 .buffer()
2626 .read(cx)
2627 .settings_at(0, cx)
2628 .indent_guides;
2629
2630 let faded_color = |color: Hsla, alpha: f32| {
2631 let mut faded = color;
2632 faded.a = alpha;
2633 faded
2634 };
2635
2636 for indent_guide in indent_guides {
2637 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
2638
2639 // TODO fixed for now, expose them through themes later
2640 const INDENT_AWARE_ALPHA: f32 = 0.2;
2641 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
2642 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
2643 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
2644
2645 let line_color = match (&settings.coloring, indent_guide.active) {
2646 (IndentGuideColoring::Disabled, _) => None,
2647 (IndentGuideColoring::Fixed, false) => {
2648 Some(cx.theme().colors().editor_indent_guide)
2649 }
2650 (IndentGuideColoring::Fixed, true) => {
2651 Some(cx.theme().colors().editor_indent_guide_active)
2652 }
2653 (IndentGuideColoring::IndentAware, false) => {
2654 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
2655 }
2656 (IndentGuideColoring::IndentAware, true) => {
2657 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
2658 }
2659 };
2660
2661 let background_color = match (&settings.background_coloring, indent_guide.active) {
2662 (IndentGuideBackgroundColoring::Disabled, _) => None,
2663 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
2664 indent_accent_colors,
2665 INDENT_AWARE_BACKGROUND_ALPHA,
2666 )),
2667 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
2668 indent_accent_colors,
2669 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
2670 )),
2671 };
2672
2673 let requested_line_width = settings.line_width.clamp(1, 10);
2674 let mut line_indicator_width = 0.;
2675 if let Some(color) = line_color {
2676 cx.paint_quad(fill(
2677 Bounds {
2678 origin: indent_guide.origin,
2679 size: size(px(requested_line_width as f32), indent_guide.length),
2680 },
2681 color,
2682 ));
2683 line_indicator_width = requested_line_width as f32;
2684 }
2685
2686 if let Some(color) = background_color {
2687 let width = indent_guide.indent_size - px(line_indicator_width);
2688 cx.paint_quad(fill(
2689 Bounds {
2690 origin: point(
2691 indent_guide.origin.x + px(line_indicator_width),
2692 indent_guide.origin.y,
2693 ),
2694 size: size(width, indent_guide.length),
2695 },
2696 color,
2697 ));
2698 }
2699 }
2700 }
2701
2702 fn paint_gutter(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2703 let line_height = layout.position_map.line_height;
2704
2705 let scroll_position = layout.position_map.snapshot.scroll_position();
2706 let scroll_top = scroll_position.y * line_height;
2707
2708 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
2709 for (_, hunk_hitbox) in &layout.display_hunks {
2710 if let Some(hunk_hitbox) = hunk_hitbox {
2711 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
2712 }
2713 }
2714
2715 let show_git_gutter = layout
2716 .position_map
2717 .snapshot
2718 .show_git_diff_gutter
2719 .unwrap_or_else(|| {
2720 matches!(
2721 ProjectSettings::get_global(cx).git.git_gutter,
2722 Some(GitGutterSetting::TrackedFiles)
2723 )
2724 });
2725 if show_git_gutter {
2726 Self::paint_diff_hunks(layout.gutter_hitbox.bounds, layout, cx)
2727 }
2728
2729 if layout.blamed_display_rows.is_some() {
2730 self.paint_blamed_display_rows(layout, cx);
2731 }
2732
2733 for (ix, line) in layout.line_numbers.iter().enumerate() {
2734 if let Some(line) = line {
2735 let line_origin = layout.gutter_hitbox.origin
2736 + point(
2737 layout.gutter_hitbox.size.width
2738 - line.width
2739 - layout.gutter_dimensions.right_padding,
2740 ix as f32 * line_height - (scroll_top % line_height),
2741 );
2742
2743 line.paint(line_origin, line_height, cx).log_err();
2744 }
2745 }
2746
2747 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2748 cx.with_element_namespace("gutter_fold_toggles", |cx| {
2749 for fold_indicator in layout.gutter_fold_toggles.iter_mut().flatten() {
2750 fold_indicator.paint(cx);
2751 }
2752 });
2753
2754 for test_indicators in layout.test_indicators.iter_mut() {
2755 test_indicators.paint(cx);
2756 }
2757
2758 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
2759 indicator.paint(cx);
2760 }
2761 });
2762 }
2763
2764 fn paint_diff_hunks(
2765 gutter_bounds: Bounds<Pixels>,
2766 layout: &EditorLayout,
2767 cx: &mut WindowContext,
2768 ) {
2769 if layout.display_hunks.is_empty() {
2770 return;
2771 }
2772
2773 let line_height = layout.position_map.line_height;
2774 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2775 for (hunk, hitbox) in &layout.display_hunks {
2776 let hunk_to_paint = match hunk {
2777 DisplayDiffHunk::Folded { .. } => {
2778 let hunk_bounds = Self::diff_hunk_bounds(
2779 &layout.position_map.snapshot,
2780 line_height,
2781 gutter_bounds,
2782 &hunk,
2783 );
2784 Some((
2785 hunk_bounds,
2786 cx.theme().status().modified,
2787 Corners::all(1. * line_height),
2788 ))
2789 }
2790 DisplayDiffHunk::Unfolded { status, .. } => {
2791 hitbox.as_ref().map(|hunk_hitbox| match status {
2792 DiffHunkStatus::Added => (
2793 hunk_hitbox.bounds,
2794 cx.theme().status().created,
2795 Corners::all(0.05 * line_height),
2796 ),
2797 DiffHunkStatus::Modified => (
2798 hunk_hitbox.bounds,
2799 cx.theme().status().modified,
2800 Corners::all(0.05 * line_height),
2801 ),
2802 DiffHunkStatus::Removed => (
2803 hunk_hitbox.bounds,
2804 cx.theme().status().deleted,
2805 Corners::all(1. * line_height),
2806 ),
2807 })
2808 }
2809 };
2810
2811 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
2812 cx.paint_quad(quad(
2813 hunk_bounds,
2814 corner_radii,
2815 background_color,
2816 Edges::default(),
2817 transparent_black(),
2818 ));
2819 }
2820 }
2821 });
2822 }
2823
2824 fn diff_hunk_bounds(
2825 snapshot: &EditorSnapshot,
2826 line_height: Pixels,
2827 bounds: Bounds<Pixels>,
2828 hunk: &DisplayDiffHunk,
2829 ) -> Bounds<Pixels> {
2830 let scroll_position = snapshot.scroll_position();
2831 let scroll_top = scroll_position.y * line_height;
2832
2833 match hunk {
2834 DisplayDiffHunk::Folded { display_row, .. } => {
2835 let start_y = display_row.as_f32() * line_height - scroll_top;
2836 let end_y = start_y + line_height;
2837
2838 let width = 0.275 * line_height;
2839 let highlight_origin = bounds.origin + point(-width, start_y);
2840 let highlight_size = size(width * 2., end_y - start_y);
2841 Bounds::new(highlight_origin, highlight_size)
2842 }
2843 DisplayDiffHunk::Unfolded {
2844 display_row_range,
2845 status,
2846 ..
2847 } => match status {
2848 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
2849 let start_row = display_row_range.start;
2850 let end_row = display_row_range.end;
2851 // If we're in a multibuffer, row range span might include an
2852 // excerpt header, so if we were to draw the marker straight away,
2853 // the hunk might include the rows of that header.
2854 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
2855 // Instead, we simply check whether the range we're dealing with includes
2856 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
2857 let end_row_in_current_excerpt = snapshot
2858 .blocks_in_range(start_row..end_row)
2859 .find_map(|(start_row, block)| {
2860 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
2861 Some(start_row)
2862 } else {
2863 None
2864 }
2865 })
2866 .unwrap_or(end_row);
2867
2868 let start_y = start_row.as_f32() * line_height - scroll_top;
2869 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
2870
2871 let width = 0.275 * line_height;
2872 let highlight_origin = bounds.origin + point(-width, start_y);
2873 let highlight_size = size(width * 2., end_y - start_y);
2874 Bounds::new(highlight_origin, highlight_size)
2875 }
2876 DiffHunkStatus::Removed => {
2877 let row = display_row_range.start;
2878
2879 let offset = line_height / 2.;
2880 let start_y = row.as_f32() * line_height - offset - scroll_top;
2881 let end_y = start_y + line_height;
2882
2883 let width = 0.35 * line_height;
2884 let highlight_origin = bounds.origin + point(-width, start_y);
2885 let highlight_size = size(width * 2., end_y - start_y);
2886 Bounds::new(highlight_origin, highlight_size)
2887 }
2888 },
2889 }
2890 }
2891
2892 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2893 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
2894 return;
2895 };
2896
2897 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2898 for mut blame_element in blamed_display_rows.into_iter() {
2899 blame_element.paint(cx);
2900 }
2901 })
2902 }
2903
2904 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2905 cx.with_content_mask(
2906 Some(ContentMask {
2907 bounds: layout.text_hitbox.bounds,
2908 }),
2909 |cx| {
2910 let cursor_style = if self
2911 .editor
2912 .read(cx)
2913 .hovered_link_state
2914 .as_ref()
2915 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
2916 {
2917 CursorStyle::PointingHand
2918 } else {
2919 CursorStyle::IBeam
2920 };
2921 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
2922
2923 cx.with_element_namespace("folds", |cx| self.paint_folds(layout, cx));
2924 let invisible_display_ranges = self.paint_highlights(layout, cx);
2925 self.paint_lines(&invisible_display_ranges, layout, cx);
2926 self.paint_redactions(layout, cx);
2927 self.paint_cursors(layout, cx);
2928 self.paint_inline_blame(layout, cx);
2929 cx.with_element_namespace("flap_trailers", |cx| {
2930 for trailer in layout.flap_trailers.iter_mut().flatten() {
2931 trailer.element.paint(cx);
2932 }
2933 });
2934 },
2935 )
2936 }
2937
2938 fn paint_highlights(
2939 &mut self,
2940 layout: &mut EditorLayout,
2941 cx: &mut WindowContext,
2942 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
2943 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2944 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
2945 let line_end_overshoot = 0.15 * layout.position_map.line_height;
2946 for (range, color) in &layout.highlighted_ranges {
2947 self.paint_highlighted_range(
2948 range.clone(),
2949 *color,
2950 Pixels::ZERO,
2951 line_end_overshoot,
2952 layout,
2953 cx,
2954 );
2955 }
2956
2957 let corner_radius = 0.15 * layout.position_map.line_height;
2958
2959 for (player_color, selections) in &layout.selections {
2960 for selection in selections.into_iter() {
2961 self.paint_highlighted_range(
2962 selection.range.clone(),
2963 player_color.selection,
2964 corner_radius,
2965 corner_radius * 2.,
2966 layout,
2967 cx,
2968 );
2969
2970 if selection.is_local && !selection.range.is_empty() {
2971 invisible_display_ranges.push(selection.range.clone());
2972 }
2973 }
2974 }
2975 invisible_display_ranges
2976 })
2977 }
2978
2979 fn paint_lines(
2980 &mut self,
2981 invisible_display_ranges: &[Range<DisplayPoint>],
2982 layout: &EditorLayout,
2983 cx: &mut WindowContext,
2984 ) {
2985 let whitespace_setting = self
2986 .editor
2987 .read(cx)
2988 .buffer
2989 .read(cx)
2990 .settings_at(0, cx)
2991 .show_whitespaces;
2992
2993 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
2994 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
2995 line_with_invisibles.draw(
2996 layout,
2997 row,
2998 layout.content_origin,
2999 whitespace_setting,
3000 invisible_display_ranges,
3001 cx,
3002 )
3003 }
3004 }
3005
3006 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3007 if layout.redacted_ranges.is_empty() {
3008 return;
3009 }
3010
3011 let line_end_overshoot = layout.line_end_overshoot();
3012
3013 // A softer than perfect black
3014 let redaction_color = gpui::rgb(0x0e1111);
3015
3016 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3017 for range in layout.redacted_ranges.iter() {
3018 self.paint_highlighted_range(
3019 range.clone(),
3020 redaction_color.into(),
3021 Pixels::ZERO,
3022 line_end_overshoot,
3023 layout,
3024 cx,
3025 );
3026 }
3027 });
3028 }
3029
3030 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3031 for cursor in &mut layout.visible_cursors {
3032 cursor.paint(layout.content_origin, cx);
3033 }
3034 }
3035
3036 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3037 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
3038 return;
3039 };
3040
3041 let thumb_bounds = scrollbar_layout.thumb_bounds();
3042 if scrollbar_layout.visible {
3043 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
3044 cx.paint_quad(quad(
3045 scrollbar_layout.hitbox.bounds,
3046 Corners::default(),
3047 cx.theme().colors().scrollbar_track_background,
3048 Edges {
3049 top: Pixels::ZERO,
3050 right: Pixels::ZERO,
3051 bottom: Pixels::ZERO,
3052 left: ScrollbarLayout::BORDER_WIDTH,
3053 },
3054 cx.theme().colors().scrollbar_track_border,
3055 ));
3056
3057 let fast_markers =
3058 self.collect_fast_scrollbar_markers(layout, scrollbar_layout, cx);
3059 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
3060 self.refresh_slow_scrollbar_markers(layout, scrollbar_layout, cx);
3061
3062 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
3063 for marker in markers.iter().chain(&fast_markers) {
3064 let mut marker = marker.clone();
3065 marker.bounds.origin += scrollbar_layout.hitbox.origin;
3066 cx.paint_quad(marker);
3067 }
3068
3069 cx.paint_quad(quad(
3070 thumb_bounds,
3071 Corners::default(),
3072 cx.theme().colors().scrollbar_thumb_background,
3073 Edges {
3074 top: Pixels::ZERO,
3075 right: Pixels::ZERO,
3076 bottom: Pixels::ZERO,
3077 left: ScrollbarLayout::BORDER_WIDTH,
3078 },
3079 cx.theme().colors().scrollbar_thumb_border,
3080 ));
3081 });
3082 }
3083
3084 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
3085
3086 let row_height = scrollbar_layout.row_height;
3087 let row_range = scrollbar_layout.visible_row_range.clone();
3088
3089 cx.on_mouse_event({
3090 let editor = self.editor.clone();
3091 let hitbox = scrollbar_layout.hitbox.clone();
3092 let mut mouse_position = cx.mouse_position();
3093 move |event: &MouseMoveEvent, phase, cx| {
3094 if phase == DispatchPhase::Capture {
3095 return;
3096 }
3097
3098 editor.update(cx, |editor, cx| {
3099 if event.pressed_button == Some(MouseButton::Left)
3100 && editor.scroll_manager.is_dragging_scrollbar()
3101 {
3102 let y = mouse_position.y;
3103 let new_y = event.position.y;
3104 if (hitbox.top()..hitbox.bottom()).contains(&y) {
3105 let mut position = editor.scroll_position(cx);
3106 position.y += (new_y - y) / row_height;
3107 if position.y < 0.0 {
3108 position.y = 0.0;
3109 }
3110 editor.set_scroll_position(position, cx);
3111 }
3112
3113 cx.stop_propagation();
3114 } else {
3115 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3116 if hitbox.is_hovered(cx) {
3117 editor.scroll_manager.show_scrollbar(cx);
3118 }
3119 }
3120 mouse_position = event.position;
3121 })
3122 }
3123 });
3124
3125 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
3126 cx.on_mouse_event({
3127 let editor = self.editor.clone();
3128 move |_: &MouseUpEvent, phase, cx| {
3129 if phase == DispatchPhase::Capture {
3130 return;
3131 }
3132
3133 editor.update(cx, |editor, cx| {
3134 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3135 cx.stop_propagation();
3136 });
3137 }
3138 });
3139 } else {
3140 cx.on_mouse_event({
3141 let editor = self.editor.clone();
3142 let hitbox = scrollbar_layout.hitbox.clone();
3143 move |event: &MouseDownEvent, phase, cx| {
3144 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
3145 return;
3146 }
3147
3148 editor.update(cx, |editor, cx| {
3149 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
3150
3151 let y = event.position.y;
3152 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
3153 let center_row = ((y - hitbox.top()) / row_height).round() as u32;
3154 let top_row = center_row
3155 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
3156 let mut position = editor.scroll_position(cx);
3157 position.y = top_row as f32;
3158 editor.set_scroll_position(position, cx);
3159 } else {
3160 editor.scroll_manager.show_scrollbar(cx);
3161 }
3162
3163 cx.stop_propagation();
3164 });
3165 }
3166 });
3167 }
3168 }
3169
3170 fn collect_fast_scrollbar_markers(
3171 &self,
3172 layout: &EditorLayout,
3173 scrollbar_layout: &ScrollbarLayout,
3174 cx: &mut WindowContext,
3175 ) -> Vec<PaintQuad> {
3176 const LIMIT: usize = 100;
3177 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
3178 return vec![];
3179 }
3180 let cursor_ranges = layout
3181 .cursors
3182 .iter()
3183 .map(|(point, color)| ColoredRange {
3184 start: point.row(),
3185 end: point.row(),
3186 color: *color,
3187 })
3188 .collect_vec();
3189 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
3190 }
3191
3192 fn refresh_slow_scrollbar_markers(
3193 &self,
3194 layout: &EditorLayout,
3195 scrollbar_layout: &ScrollbarLayout,
3196 cx: &mut WindowContext,
3197 ) {
3198 self.editor.update(cx, |editor, cx| {
3199 if !editor.is_singleton(cx)
3200 || !editor
3201 .scrollbar_marker_state
3202 .should_refresh(scrollbar_layout.hitbox.size)
3203 {
3204 return;
3205 }
3206
3207 let scrollbar_layout = scrollbar_layout.clone();
3208 let background_highlights = editor.background_highlights.clone();
3209 let snapshot = layout.position_map.snapshot.clone();
3210 let theme = cx.theme().clone();
3211 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
3212
3213 editor.scrollbar_marker_state.dirty = false;
3214 editor.scrollbar_marker_state.pending_refresh =
3215 Some(cx.spawn(|editor, mut cx| async move {
3216 let scrollbar_size = scrollbar_layout.hitbox.size;
3217 let scrollbar_markers = cx
3218 .background_executor()
3219 .spawn(async move {
3220 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
3221 let mut marker_quads = Vec::new();
3222 if scrollbar_settings.git_diff {
3223 let marker_row_ranges = snapshot
3224 .buffer_snapshot
3225 .git_diff_hunks_in_range(
3226 MultiBufferRow::MIN..MultiBufferRow::MAX,
3227 )
3228 .map(|hunk| {
3229 let start_display_row =
3230 MultiBufferPoint::new(hunk.associated_range.start.0, 0)
3231 .to_display_point(&snapshot.display_snapshot)
3232 .row();
3233 let mut end_display_row =
3234 MultiBufferPoint::new(hunk.associated_range.end.0, 0)
3235 .to_display_point(&snapshot.display_snapshot)
3236 .row();
3237 if end_display_row != start_display_row {
3238 end_display_row.0 -= 1;
3239 }
3240 let color = match hunk_status(&hunk) {
3241 DiffHunkStatus::Added => theme.status().created,
3242 DiffHunkStatus::Modified => theme.status().modified,
3243 DiffHunkStatus::Removed => theme.status().deleted,
3244 };
3245 ColoredRange {
3246 start: start_display_row,
3247 end: end_display_row,
3248 color,
3249 }
3250 });
3251
3252 marker_quads.extend(
3253 scrollbar_layout
3254 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
3255 );
3256 }
3257
3258 for (background_highlight_id, (_, background_ranges)) in
3259 background_highlights.iter()
3260 {
3261 let is_search_highlights = *background_highlight_id
3262 == TypeId::of::<BufferSearchHighlights>();
3263 let is_symbol_occurrences = *background_highlight_id
3264 == TypeId::of::<DocumentHighlightRead>()
3265 || *background_highlight_id
3266 == TypeId::of::<DocumentHighlightWrite>();
3267 if (is_search_highlights && scrollbar_settings.search_results)
3268 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
3269 {
3270 let mut color = theme.status().info;
3271 if is_symbol_occurrences {
3272 color.fade_out(0.5);
3273 }
3274 let marker_row_ranges =
3275 background_ranges.into_iter().map(|range| {
3276 let display_start = range
3277 .start
3278 .to_display_point(&snapshot.display_snapshot);
3279 let display_end = range
3280 .end
3281 .to_display_point(&snapshot.display_snapshot);
3282 ColoredRange {
3283 start: display_start.row(),
3284 end: display_end.row(),
3285 color,
3286 }
3287 });
3288 marker_quads.extend(
3289 scrollbar_layout
3290 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
3291 );
3292 }
3293 }
3294
3295 if scrollbar_settings.diagnostics {
3296 let diagnostics = snapshot
3297 .buffer_snapshot
3298 .diagnostics_in_range::<_, Point>(
3299 Point::zero()..max_point,
3300 false,
3301 )
3302 // We want to sort by severity, in order to paint the most severe diagnostics last.
3303 .sorted_by_key(|diagnostic| {
3304 std::cmp::Reverse(diagnostic.diagnostic.severity)
3305 });
3306
3307 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
3308 let start_display = diagnostic
3309 .range
3310 .start
3311 .to_display_point(&snapshot.display_snapshot);
3312 let end_display = diagnostic
3313 .range
3314 .end
3315 .to_display_point(&snapshot.display_snapshot);
3316 let color = match diagnostic.diagnostic.severity {
3317 DiagnosticSeverity::ERROR => theme.status().error,
3318 DiagnosticSeverity::WARNING => theme.status().warning,
3319 DiagnosticSeverity::INFORMATION => theme.status().info,
3320 _ => theme.status().hint,
3321 };
3322 ColoredRange {
3323 start: start_display.row(),
3324 end: end_display.row(),
3325 color,
3326 }
3327 });
3328 marker_quads.extend(
3329 scrollbar_layout
3330 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
3331 );
3332 }
3333
3334 Arc::from(marker_quads)
3335 })
3336 .await;
3337
3338 editor.update(&mut cx, |editor, cx| {
3339 editor.scrollbar_marker_state.markers = scrollbar_markers;
3340 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
3341 editor.scrollbar_marker_state.pending_refresh = None;
3342 cx.notify();
3343 })?;
3344
3345 Ok(())
3346 }));
3347 });
3348 }
3349
3350 #[allow(clippy::too_many_arguments)]
3351 fn paint_highlighted_range(
3352 &self,
3353 range: Range<DisplayPoint>,
3354 color: Hsla,
3355 corner_radius: Pixels,
3356 line_end_overshoot: Pixels,
3357 layout: &EditorLayout,
3358 cx: &mut WindowContext,
3359 ) {
3360 let start_row = layout.visible_display_row_range.start;
3361 let end_row = layout.visible_display_row_range.end;
3362 if range.start != range.end {
3363 let row_range = if range.end.column() == 0 {
3364 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3365 } else {
3366 cmp::max(range.start.row(), start_row)
3367 ..cmp::min(range.end.row().next_row(), end_row)
3368 };
3369
3370 let highlighted_range = HighlightedRange {
3371 color,
3372 line_height: layout.position_map.line_height,
3373 corner_radius,
3374 start_y: layout.content_origin.y
3375 + row_range.start.as_f32() * layout.position_map.line_height
3376 - layout.position_map.scroll_pixel_position.y,
3377 lines: row_range
3378 .iter_rows()
3379 .map(|row| {
3380 let line_layout =
3381 &layout.position_map.line_layouts[row.minus(start_row) as usize].line;
3382 HighlightedRangeLine {
3383 start_x: if row == range.start.row() {
3384 layout.content_origin.x
3385 + line_layout.x_for_index(range.start.column() as usize)
3386 - layout.position_map.scroll_pixel_position.x
3387 } else {
3388 layout.content_origin.x
3389 - layout.position_map.scroll_pixel_position.x
3390 },
3391 end_x: if row == range.end.row() {
3392 layout.content_origin.x
3393 + line_layout.x_for_index(range.end.column() as usize)
3394 - layout.position_map.scroll_pixel_position.x
3395 } else {
3396 layout.content_origin.x + line_layout.width + line_end_overshoot
3397 - layout.position_map.scroll_pixel_position.x
3398 },
3399 }
3400 })
3401 .collect(),
3402 };
3403
3404 highlighted_range.paint(layout.text_hitbox.bounds, cx);
3405 }
3406 }
3407
3408 fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3409 if layout.folds.is_empty() {
3410 return;
3411 }
3412
3413 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3414 let fold_corner_radius = 0.15 * layout.position_map.line_height;
3415 for mut fold in mem::take(&mut layout.folds) {
3416 fold.hover_element.paint(cx);
3417
3418 let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
3419 let fold_background = if hover_element.interactivity().active.unwrap() {
3420 cx.theme().colors().ghost_element_active
3421 } else if hover_element.interactivity().hovered.unwrap() {
3422 cx.theme().colors().ghost_element_hover
3423 } else {
3424 cx.theme().colors().ghost_element_background
3425 };
3426
3427 self.paint_highlighted_range(
3428 fold.display_range.clone(),
3429 fold_background,
3430 fold_corner_radius,
3431 fold_corner_radius * 2.,
3432 layout,
3433 cx,
3434 );
3435 }
3436 })
3437 }
3438
3439 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3440 if let Some(mut inline_blame) = layout.inline_blame.take() {
3441 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3442 inline_blame.paint(cx);
3443 })
3444 }
3445 }
3446
3447 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3448 for mut block in layout.blocks.drain(..) {
3449 block.element.paint(cx);
3450 }
3451 }
3452
3453 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3454 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
3455 mouse_context_menu.paint(cx);
3456 }
3457 }
3458
3459 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3460 cx.on_mouse_event({
3461 let position_map = layout.position_map.clone();
3462 let editor = self.editor.clone();
3463 let hitbox = layout.hitbox.clone();
3464 let mut delta = ScrollDelta::default();
3465
3466 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
3467 // accidentally turn off their scrolling.
3468 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
3469
3470 move |event: &ScrollWheelEvent, phase, cx| {
3471 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
3472 delta = delta.coalesce(event.delta);
3473 editor.update(cx, |editor, cx| {
3474 let position_map: &PositionMap = &position_map;
3475
3476 let line_height = position_map.line_height;
3477 let max_glyph_width = position_map.em_width;
3478 let (delta, axis) = match delta {
3479 gpui::ScrollDelta::Pixels(mut pixels) => {
3480 //Trackpad
3481 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
3482 (pixels, axis)
3483 }
3484
3485 gpui::ScrollDelta::Lines(lines) => {
3486 //Not trackpad
3487 let pixels =
3488 point(lines.x * max_glyph_width, lines.y * line_height);
3489 (pixels, None)
3490 }
3491 };
3492
3493 let current_scroll_position = position_map.snapshot.scroll_position();
3494 let x = (current_scroll_position.x * max_glyph_width
3495 - (delta.x * scroll_sensitivity))
3496 / max_glyph_width;
3497 let y = (current_scroll_position.y * line_height
3498 - (delta.y * scroll_sensitivity))
3499 / line_height;
3500 let mut scroll_position =
3501 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
3502 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
3503 if forbid_vertical_scroll {
3504 scroll_position.y = current_scroll_position.y;
3505 if scroll_position == current_scroll_position {
3506 return;
3507 }
3508 }
3509 editor.scroll(scroll_position, axis, cx);
3510 cx.stop_propagation();
3511 });
3512 }
3513 }
3514 });
3515 }
3516
3517 fn paint_mouse_listeners(
3518 &mut self,
3519 layout: &EditorLayout,
3520 hovered_hunk: Option<HunkToExpand>,
3521 cx: &mut WindowContext,
3522 ) {
3523 self.paint_scroll_wheel_listener(layout, cx);
3524
3525 cx.on_mouse_event({
3526 let position_map = layout.position_map.clone();
3527 let editor = self.editor.clone();
3528 let text_hitbox = layout.text_hitbox.clone();
3529 let gutter_hitbox = layout.gutter_hitbox.clone();
3530
3531 move |event: &MouseDownEvent, phase, cx| {
3532 if phase == DispatchPhase::Bubble {
3533 match event.button {
3534 MouseButton::Left => editor.update(cx, |editor, cx| {
3535 Self::mouse_left_down(
3536 editor,
3537 event,
3538 hovered_hunk.as_ref(),
3539 &position_map,
3540 &text_hitbox,
3541 &gutter_hitbox,
3542 cx,
3543 );
3544 }),
3545 MouseButton::Right => editor.update(cx, |editor, cx| {
3546 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
3547 }),
3548 MouseButton::Middle => editor.update(cx, |editor, cx| {
3549 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
3550 }),
3551 _ => {}
3552 };
3553 }
3554 }
3555 });
3556
3557 cx.on_mouse_event({
3558 let editor = self.editor.clone();
3559 let position_map = layout.position_map.clone();
3560 let text_hitbox = layout.text_hitbox.clone();
3561
3562 move |event: &MouseUpEvent, phase, cx| {
3563 if phase == DispatchPhase::Bubble {
3564 editor.update(cx, |editor, cx| {
3565 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
3566 });
3567 }
3568 }
3569 });
3570 cx.on_mouse_event({
3571 let position_map = layout.position_map.clone();
3572 let editor = self.editor.clone();
3573 let text_hitbox = layout.text_hitbox.clone();
3574 let gutter_hitbox = layout.gutter_hitbox.clone();
3575
3576 move |event: &MouseMoveEvent, phase, cx| {
3577 if phase == DispatchPhase::Bubble {
3578 editor.update(cx, |editor, cx| {
3579 if event.pressed_button == Some(MouseButton::Left)
3580 || event.pressed_button == Some(MouseButton::Middle)
3581 {
3582 Self::mouse_dragged(
3583 editor,
3584 event,
3585 &position_map,
3586 text_hitbox.bounds,
3587 cx,
3588 )
3589 }
3590
3591 Self::mouse_moved(
3592 editor,
3593 event,
3594 &position_map,
3595 &text_hitbox,
3596 &gutter_hitbox,
3597 cx,
3598 )
3599 });
3600 }
3601 }
3602 });
3603 }
3604
3605 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
3606 bounds.upper_right().x - self.style.scrollbar_width
3607 }
3608
3609 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
3610 let style = &self.style;
3611 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3612 let layout = cx
3613 .text_system()
3614 .shape_line(
3615 SharedString::from(" ".repeat(column)),
3616 font_size,
3617 &[TextRun {
3618 len: column,
3619 font: style.text.font(),
3620 color: Hsla::default(),
3621 background_color: None,
3622 underline: None,
3623 strikethrough: None,
3624 }],
3625 )
3626 .unwrap();
3627
3628 layout.width
3629 }
3630
3631 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
3632 let digit_count = snapshot
3633 .max_buffer_row()
3634 .next_row()
3635 .as_f32()
3636 .log10()
3637 .floor() as usize
3638 + 1;
3639 self.column_pixels(digit_count, cx)
3640 }
3641}
3642
3643fn prepaint_gutter_button(
3644 button: IconButton,
3645 row: DisplayRow,
3646 line_height: Pixels,
3647 gutter_dimensions: &GutterDimensions,
3648 scroll_pixel_position: gpui::Point<Pixels>,
3649 gutter_hitbox: &Hitbox,
3650 cx: &mut WindowContext<'_>,
3651) -> AnyElement {
3652 let mut button = button.into_any_element();
3653 let available_space = size(
3654 AvailableSpace::MinContent,
3655 AvailableSpace::Definite(line_height),
3656 );
3657 let indicator_size = button.layout_as_root(available_space, cx);
3658
3659 let blame_width = gutter_dimensions
3660 .git_blame_entries_width
3661 .unwrap_or(Pixels::ZERO);
3662
3663 let mut x = blame_width;
3664 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
3665 - indicator_size.width
3666 - blame_width;
3667 x += available_width / 2.;
3668
3669 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
3670 y += (line_height - indicator_size.height) / 2.;
3671
3672 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
3673 button
3674}
3675
3676fn render_inline_blame_entry(
3677 blame: &gpui::Model<GitBlame>,
3678 blame_entry: BlameEntry,
3679 style: &EditorStyle,
3680 workspace: Option<WeakView<Workspace>>,
3681 cx: &mut WindowContext<'_>,
3682) -> AnyElement {
3683 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry, cx);
3684
3685 let author = blame_entry.author.as_deref().unwrap_or_default();
3686 let text = format!("{}, {}", author, relative_timestamp);
3687
3688 let details = blame.read(cx).details_for_entry(&blame_entry);
3689
3690 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
3691
3692 h_flex()
3693 .id("inline-blame")
3694 .w_full()
3695 .font_family(style.text.font().family)
3696 .text_color(cx.theme().status().hint)
3697 .line_height(style.text.line_height)
3698 .child(Icon::new(IconName::FileGit).color(Color::Hint))
3699 .child(text)
3700 .gap_2()
3701 .hoverable_tooltip(move |_| tooltip.clone().into())
3702 .into_any()
3703}
3704
3705fn render_blame_entry(
3706 ix: usize,
3707 blame: &gpui::Model<GitBlame>,
3708 blame_entry: BlameEntry,
3709 style: &EditorStyle,
3710 last_used_color: &mut Option<(PlayerColor, Oid)>,
3711 editor: View<Editor>,
3712 cx: &mut WindowContext<'_>,
3713) -> AnyElement {
3714 let mut sha_color = cx
3715 .theme()
3716 .players()
3717 .color_for_participant(blame_entry.sha.into());
3718 // If the last color we used is the same as the one we get for this line, but
3719 // the commit SHAs are different, then we try again to get a different color.
3720 match *last_used_color {
3721 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
3722 let index: u32 = blame_entry.sha.into();
3723 sha_color = cx.theme().players().color_for_participant(index + 1);
3724 }
3725 _ => {}
3726 };
3727 last_used_color.replace((sha_color, blame_entry.sha));
3728
3729 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry, cx);
3730
3731 let short_commit_id = blame_entry.sha.display_short();
3732
3733 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
3734 let name = util::truncate_and_trailoff(author_name, 20);
3735
3736 let details = blame.read(cx).details_for_entry(&blame_entry);
3737
3738 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
3739
3740 let tooltip = cx.new_view(|_| {
3741 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
3742 });
3743
3744 h_flex()
3745 .w_full()
3746 .font_family(style.text.font().family)
3747 .line_height(style.text.line_height)
3748 .id(("blame", ix))
3749 .children([
3750 div()
3751 .text_color(sha_color.cursor)
3752 .child(short_commit_id)
3753 .mr_2(),
3754 div()
3755 .w_full()
3756 .h_flex()
3757 .justify_between()
3758 .text_color(cx.theme().status().hint)
3759 .child(name)
3760 .child(relative_timestamp),
3761 ])
3762 .on_mouse_down(MouseButton::Right, {
3763 let blame_entry = blame_entry.clone();
3764 let details = details.clone();
3765 move |event, cx| {
3766 deploy_blame_entry_context_menu(
3767 &blame_entry,
3768 details.as_ref(),
3769 editor.clone(),
3770 event.position,
3771 cx,
3772 );
3773 }
3774 })
3775 .hover(|style| style.bg(cx.theme().colors().element_hover))
3776 .when_some(
3777 details.and_then(|details| details.permalink),
3778 |this, url| {
3779 let url = url.clone();
3780 this.cursor_pointer().on_click(move |_, cx| {
3781 cx.stop_propagation();
3782 cx.open_url(url.as_str())
3783 })
3784 },
3785 )
3786 .hoverable_tooltip(move |_| tooltip.clone().into())
3787 .into_any()
3788}
3789
3790fn deploy_blame_entry_context_menu(
3791 blame_entry: &BlameEntry,
3792 details: Option<&CommitDetails>,
3793 editor: View<Editor>,
3794 position: gpui::Point<Pixels>,
3795 cx: &mut WindowContext<'_>,
3796) {
3797 let context_menu = ContextMenu::build(cx, move |this, _| {
3798 let sha = format!("{}", blame_entry.sha);
3799 this.entry("Copy commit SHA", None, move |cx| {
3800 cx.write_to_clipboard(ClipboardItem::new(sha.clone()));
3801 })
3802 .when_some(
3803 details.and_then(|details| details.permalink.clone()),
3804 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
3805 )
3806 });
3807
3808 editor.update(cx, move |editor, cx| {
3809 editor.mouse_context_menu = Some(MouseContextMenu::new(position, context_menu, cx));
3810 cx.notify();
3811 });
3812}
3813
3814#[derive(Debug)]
3815pub(crate) struct LineWithInvisibles {
3816 pub line: ShapedLine,
3817 invisibles: Vec<Invisible>,
3818}
3819
3820impl LineWithInvisibles {
3821 fn from_chunks<'a>(
3822 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
3823 text_style: &TextStyle,
3824 max_line_len: usize,
3825 max_line_count: usize,
3826 line_number_layouts: &[Option<ShapedLine>],
3827 editor_mode: EditorMode,
3828 cx: &WindowContext,
3829 ) -> Vec<Self> {
3830 let mut layouts = Vec::with_capacity(max_line_count);
3831 let mut line = String::new();
3832 let mut invisibles = Vec::new();
3833 let mut styles = Vec::new();
3834 let mut non_whitespace_added = false;
3835 let mut row = 0;
3836 let mut line_exceeded_max_len = false;
3837 let font_size = text_style.font_size.to_pixels(cx.rem_size());
3838
3839 for highlighted_chunk in chunks.chain([HighlightedChunk {
3840 chunk: "\n",
3841 style: None,
3842 is_tab: false,
3843 }]) {
3844 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
3845 if ix > 0 {
3846 let shaped_line = cx
3847 .text_system()
3848 .shape_line(line.clone().into(), font_size, &styles)
3849 .unwrap();
3850 layouts.push(Self {
3851 line: shaped_line,
3852 invisibles: std::mem::take(&mut invisibles),
3853 });
3854
3855 line.clear();
3856 styles.clear();
3857 row += 1;
3858 line_exceeded_max_len = false;
3859 non_whitespace_added = false;
3860 if row == max_line_count {
3861 return layouts;
3862 }
3863 }
3864
3865 if !line_chunk.is_empty() && !line_exceeded_max_len {
3866 let text_style = if let Some(style) = highlighted_chunk.style {
3867 Cow::Owned(text_style.clone().highlight(style))
3868 } else {
3869 Cow::Borrowed(text_style)
3870 };
3871
3872 if line.len() + line_chunk.len() > max_line_len {
3873 let mut chunk_len = max_line_len - line.len();
3874 while !line_chunk.is_char_boundary(chunk_len) {
3875 chunk_len -= 1;
3876 }
3877 line_chunk = &line_chunk[..chunk_len];
3878 line_exceeded_max_len = true;
3879 }
3880
3881 styles.push(TextRun {
3882 len: line_chunk.len(),
3883 font: text_style.font(),
3884 color: text_style.color,
3885 background_color: text_style.background_color,
3886 underline: text_style.underline,
3887 strikethrough: text_style.strikethrough,
3888 });
3889
3890 if editor_mode == EditorMode::Full {
3891 // Line wrap pads its contents with fake whitespaces,
3892 // avoid printing them
3893 let inside_wrapped_string = line_number_layouts
3894 .get(row)
3895 .and_then(|layout| layout.as_ref())
3896 .is_none();
3897 if highlighted_chunk.is_tab {
3898 if non_whitespace_added || !inside_wrapped_string {
3899 invisibles.push(Invisible::Tab {
3900 line_start_offset: line.len(),
3901 });
3902 }
3903 } else {
3904 invisibles.extend(
3905 line_chunk
3906 .chars()
3907 .enumerate()
3908 .filter(|(_, line_char)| {
3909 let is_whitespace = line_char.is_whitespace();
3910 non_whitespace_added |= !is_whitespace;
3911 is_whitespace
3912 && (non_whitespace_added || !inside_wrapped_string)
3913 })
3914 .map(|(whitespace_index, _)| Invisible::Whitespace {
3915 line_offset: line.len() + whitespace_index,
3916 }),
3917 )
3918 }
3919 }
3920
3921 line.push_str(line_chunk);
3922 }
3923 }
3924 }
3925
3926 layouts
3927 }
3928
3929 fn draw(
3930 &self,
3931 layout: &EditorLayout,
3932 row: DisplayRow,
3933 content_origin: gpui::Point<Pixels>,
3934 whitespace_setting: ShowWhitespaceSetting,
3935 selection_ranges: &[Range<DisplayPoint>],
3936 cx: &mut WindowContext,
3937 ) {
3938 let line_height = layout.position_map.line_height;
3939 let line_y = line_height
3940 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
3941
3942 let line_origin =
3943 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
3944 self.line.paint(line_origin, line_height, cx).log_err();
3945
3946 self.draw_invisibles(
3947 &selection_ranges,
3948 layout,
3949 content_origin,
3950 line_y,
3951 row,
3952 line_height,
3953 whitespace_setting,
3954 cx,
3955 );
3956 }
3957
3958 #[allow(clippy::too_many_arguments)]
3959 fn draw_invisibles(
3960 &self,
3961 selection_ranges: &[Range<DisplayPoint>],
3962 layout: &EditorLayout,
3963 content_origin: gpui::Point<Pixels>,
3964 line_y: Pixels,
3965 row: DisplayRow,
3966 line_height: Pixels,
3967 whitespace_setting: ShowWhitespaceSetting,
3968 cx: &mut WindowContext,
3969 ) {
3970 let allowed_invisibles_regions = match whitespace_setting {
3971 ShowWhitespaceSetting::None => return,
3972 ShowWhitespaceSetting::Selection => Some(selection_ranges),
3973 ShowWhitespaceSetting::All => None,
3974 };
3975
3976 for invisible in &self.invisibles {
3977 let (&token_offset, invisible_symbol) = match invisible {
3978 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
3979 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
3980 };
3981
3982 let x_offset = self.line.x_for_index(token_offset);
3983 let invisible_offset =
3984 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
3985 let origin = content_origin
3986 + gpui::point(
3987 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
3988 line_y,
3989 );
3990
3991 if let Some(allowed_regions) = allowed_invisibles_regions {
3992 let invisible_point = DisplayPoint::new(row, token_offset as u32);
3993 if !allowed_regions
3994 .iter()
3995 .any(|region| region.start <= invisible_point && invisible_point < region.end)
3996 {
3997 continue;
3998 }
3999 }
4000 invisible_symbol.paint(origin, line_height, cx).log_err();
4001 }
4002 }
4003}
4004
4005#[derive(Debug, Clone, Copy, PartialEq, Eq)]
4006enum Invisible {
4007 Tab { line_start_offset: usize },
4008 Whitespace { line_offset: usize },
4009}
4010
4011impl EditorElement {
4012 /// Returns the rem size to use when rendering the [`EditorElement`].
4013 ///
4014 /// This allows UI elements to scale based on the `buffer_font_size`.
4015 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
4016 match self.editor.read(cx).mode {
4017 EditorMode::Full => {
4018 let buffer_font_size = self.style.text.font_size;
4019 match buffer_font_size {
4020 AbsoluteLength::Pixels(pixels) => {
4021 let rem_size_scale = {
4022 // Our default UI font size is 14px on a 16px base scale.
4023 // This means the default UI font size is 0.875rems.
4024 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
4025
4026 // We then determine the delta between a single rem and the default font
4027 // size scale.
4028 let default_font_size_delta = 1. - default_font_size_scale;
4029
4030 // Finally, we add this delta to 1rem to get the scale factor that
4031 // should be used to scale up the UI.
4032 1. + default_font_size_delta
4033 };
4034
4035 Some(pixels * rem_size_scale)
4036 }
4037 AbsoluteLength::Rems(rems) => {
4038 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
4039 }
4040 }
4041 }
4042 // We currently use single-line and auto-height editors in UI contexts,
4043 // so we don't want to scale everything with the buffer font size, as it
4044 // ends up looking off.
4045 EditorMode::SingleLine | EditorMode::AutoHeight { .. } => None,
4046 }
4047 }
4048}
4049
4050impl Element for EditorElement {
4051 type RequestLayoutState = ();
4052 type PrepaintState = EditorLayout;
4053
4054 fn id(&self) -> Option<ElementId> {
4055 None
4056 }
4057
4058 fn request_layout(
4059 &mut self,
4060 _: Option<&GlobalElementId>,
4061 cx: &mut WindowContext,
4062 ) -> (gpui::LayoutId, ()) {
4063 let rem_size = self.rem_size(cx);
4064 cx.with_rem_size(rem_size, |cx| {
4065 self.editor.update(cx, |editor, cx| {
4066 editor.set_style(self.style.clone(), cx);
4067
4068 let layout_id = match editor.mode {
4069 EditorMode::SingleLine => {
4070 let rem_size = cx.rem_size();
4071 let mut style = Style::default();
4072 style.size.width = relative(1.).into();
4073 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
4074 cx.request_layout(style, None)
4075 }
4076 EditorMode::AutoHeight { max_lines } => {
4077 let editor_handle = cx.view().clone();
4078 let max_line_number_width =
4079 self.max_line_number_width(&editor.snapshot(cx), cx);
4080 cx.request_measured_layout(
4081 Style::default(),
4082 move |known_dimensions, available_space, cx| {
4083 editor_handle
4084 .update(cx, |editor, cx| {
4085 compute_auto_height_layout(
4086 editor,
4087 max_lines,
4088 max_line_number_width,
4089 known_dimensions,
4090 available_space.width,
4091 cx,
4092 )
4093 })
4094 .unwrap_or_default()
4095 },
4096 )
4097 }
4098 EditorMode::Full => {
4099 let mut style = Style::default();
4100 style.size.width = relative(1.).into();
4101 style.size.height = relative(1.).into();
4102 cx.request_layout(style, None)
4103 }
4104 };
4105
4106 (layout_id, ())
4107 })
4108 })
4109 }
4110
4111 fn prepaint(
4112 &mut self,
4113 _: Option<&GlobalElementId>,
4114 bounds: Bounds<Pixels>,
4115 _: &mut Self::RequestLayoutState,
4116 cx: &mut WindowContext,
4117 ) -> Self::PrepaintState {
4118 let text_style = TextStyleRefinement {
4119 font_size: Some(self.style.text.font_size),
4120 line_height: Some(self.style.text.line_height),
4121 ..Default::default()
4122 };
4123 cx.set_view_id(self.editor.entity_id());
4124
4125 let rem_size = self.rem_size(cx);
4126 cx.with_rem_size(rem_size, |cx| {
4127 cx.with_text_style(Some(text_style), |cx| {
4128 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
4129 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
4130 let style = self.style.clone();
4131
4132 let font_id = cx.text_system().resolve_font(&style.text.font());
4133 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4134 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4135 let em_width = cx
4136 .text_system()
4137 .typographic_bounds(font_id, font_size, 'm')
4138 .unwrap()
4139 .size
4140 .width;
4141 let em_advance = cx
4142 .text_system()
4143 .advance(font_id, font_size, 'm')
4144 .unwrap()
4145 .width;
4146
4147 let gutter_dimensions = snapshot.gutter_dimensions(
4148 font_id,
4149 font_size,
4150 em_width,
4151 self.max_line_number_width(&snapshot, cx),
4152 cx,
4153 );
4154 let text_width = bounds.size.width - gutter_dimensions.width;
4155
4156 let right_margin = if snapshot.mode == EditorMode::Full {
4157 EditorElement::SCROLLBAR_WIDTH
4158 } else {
4159 px(0.)
4160 };
4161 let overscroll = size(em_width + right_margin, px(0.));
4162
4163 snapshot = self.editor.update(cx, |editor, cx| {
4164 editor.last_bounds = Some(bounds);
4165 editor.gutter_dimensions = gutter_dimensions;
4166 editor.set_visible_line_count(bounds.size.height / line_height, cx);
4167
4168 let editor_width =
4169 text_width - gutter_dimensions.margin - overscroll.width - em_width;
4170 let wrap_width = match editor.soft_wrap_mode(cx) {
4171 SoftWrap::None => None,
4172 SoftWrap::PreferLine => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
4173 SoftWrap::EditorWidth => Some(editor_width),
4174 SoftWrap::Column(column) => {
4175 Some(editor_width.min(column as f32 * em_advance))
4176 }
4177 };
4178
4179 if editor.set_wrap_width(wrap_width, cx) {
4180 editor.snapshot(cx)
4181 } else {
4182 snapshot
4183 }
4184 });
4185
4186 let wrap_guides = self
4187 .editor
4188 .read(cx)
4189 .wrap_guides(cx)
4190 .iter()
4191 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
4192 .collect::<SmallVec<[_; 2]>>();
4193
4194 let hitbox = cx.insert_hitbox(bounds, false);
4195 let gutter_hitbox = cx.insert_hitbox(
4196 Bounds {
4197 origin: bounds.origin,
4198 size: size(gutter_dimensions.width, bounds.size.height),
4199 },
4200 false,
4201 );
4202 let text_hitbox = cx.insert_hitbox(
4203 Bounds {
4204 origin: gutter_hitbox.upper_right(),
4205 size: size(text_width, bounds.size.height),
4206 },
4207 false,
4208 );
4209 // Offset the content_bounds from the text_bounds by the gutter margin (which
4210 // is roughly half a character wide) to make hit testing work more like how we want.
4211 let content_origin =
4212 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
4213
4214 let mut autoscroll_containing_element = false;
4215 let mut autoscroll_horizontally = false;
4216 self.editor.update(cx, |editor, cx| {
4217 autoscroll_containing_element =
4218 editor.autoscroll_requested() || editor.has_pending_selection();
4219 autoscroll_horizontally =
4220 editor.autoscroll_vertically(bounds, line_height, cx);
4221 snapshot = editor.snapshot(cx);
4222 });
4223
4224 let mut scroll_position = snapshot.scroll_position();
4225 // The scroll position is a fractional point, the whole number of which represents
4226 // the top of the window in terms of display rows.
4227 let start_row = DisplayRow(scroll_position.y as u32);
4228 let height_in_lines = bounds.size.height / line_height;
4229 let max_row = snapshot.max_point().row();
4230 let end_row = cmp::min(
4231 (scroll_position.y + height_in_lines).ceil() as u32,
4232 max_row.next_row().0,
4233 );
4234 let end_row = DisplayRow(end_row);
4235
4236 let buffer_rows = snapshot
4237 .buffer_rows(start_row)
4238 .take((start_row..end_row).len())
4239 .collect::<Vec<_>>();
4240
4241 let start_anchor = if start_row == Default::default() {
4242 Anchor::min()
4243 } else {
4244 snapshot.buffer_snapshot.anchor_before(
4245 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
4246 )
4247 };
4248 let end_anchor = if end_row > max_row {
4249 Anchor::max()
4250 } else {
4251 snapshot.buffer_snapshot.anchor_before(
4252 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
4253 )
4254 };
4255
4256 let highlighted_rows = self
4257 .editor
4258 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
4259 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
4260 start_anchor..end_anchor,
4261 &snapshot.display_snapshot,
4262 cx.theme().colors(),
4263 );
4264
4265 let redacted_ranges = self.editor.read(cx).redacted_ranges(
4266 start_anchor..end_anchor,
4267 &snapshot.display_snapshot,
4268 cx,
4269 );
4270
4271 let (selections, active_rows, newest_selection_head) = self.layout_selections(
4272 start_anchor,
4273 end_anchor,
4274 &snapshot,
4275 start_row,
4276 end_row,
4277 cx,
4278 );
4279
4280 let line_numbers = self.layout_line_numbers(
4281 start_row..end_row,
4282 buffer_rows.iter().copied(),
4283 &active_rows,
4284 newest_selection_head,
4285 &snapshot,
4286 cx,
4287 );
4288
4289 let mut gutter_fold_toggles =
4290 cx.with_element_namespace("gutter_fold_toggles", |cx| {
4291 self.layout_gutter_fold_toggles(
4292 start_row..end_row,
4293 buffer_rows.iter().copied(),
4294 &active_rows,
4295 &snapshot,
4296 cx,
4297 )
4298 });
4299 let flap_trailers = cx.with_element_namespace("flap_trailers", |cx| {
4300 self.layout_flap_trailers(buffer_rows.iter().copied(), &snapshot, cx)
4301 });
4302
4303 let display_hunks = self.layout_git_gutters(
4304 line_height,
4305 &gutter_hitbox,
4306 start_row..end_row,
4307 &snapshot,
4308 cx,
4309 );
4310
4311 let mut max_visible_line_width = Pixels::ZERO;
4312 let line_layouts =
4313 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
4314 for line_with_invisibles in &line_layouts {
4315 if line_with_invisibles.line.width > max_visible_line_width {
4316 max_visible_line_width = line_with_invisibles.line.width;
4317 }
4318 }
4319
4320 let longest_line_width =
4321 layout_line(snapshot.longest_row(), &snapshot, &style, cx)
4322 .unwrap()
4323 .width;
4324 let mut scroll_width =
4325 longest_line_width.max(max_visible_line_width) + overscroll.width;
4326
4327 let mut blocks = cx.with_element_namespace("blocks", |cx| {
4328 self.build_blocks(
4329 start_row..end_row,
4330 &snapshot,
4331 &hitbox,
4332 &text_hitbox,
4333 &mut scroll_width,
4334 &gutter_dimensions,
4335 em_width,
4336 gutter_dimensions.width + gutter_dimensions.margin,
4337 line_height,
4338 &line_layouts,
4339 cx,
4340 )
4341 });
4342
4343 let scroll_pixel_position = point(
4344 scroll_position.x * em_width,
4345 scroll_position.y * line_height,
4346 );
4347
4348 let start_buffer_row =
4349 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
4350 let end_buffer_row =
4351 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
4352
4353 let indent_guides = self.layout_indent_guides(
4354 content_origin,
4355 text_hitbox.origin,
4356 start_buffer_row..end_buffer_row,
4357 scroll_pixel_position,
4358 line_height,
4359 &snapshot,
4360 cx,
4361 );
4362
4363 let flap_trailers = cx.with_element_namespace("flap_trailers", |cx| {
4364 self.prepaint_flap_trailers(
4365 flap_trailers,
4366 &line_layouts,
4367 line_height,
4368 content_origin,
4369 scroll_pixel_position,
4370 em_width,
4371 cx,
4372 )
4373 });
4374
4375 let mut inline_blame = None;
4376 if let Some(newest_selection_head) = newest_selection_head {
4377 let display_row = newest_selection_head.row();
4378 if (start_row..end_row).contains(&display_row) {
4379 let line_ix = display_row.minus(start_row) as usize;
4380 let line_layout = &line_layouts[line_ix];
4381 let flap_trailer_layout = flap_trailers[line_ix].as_ref();
4382 inline_blame = self.layout_inline_blame(
4383 display_row,
4384 &snapshot.display_snapshot,
4385 line_layout,
4386 flap_trailer_layout,
4387 em_width,
4388 content_origin,
4389 scroll_pixel_position,
4390 line_height,
4391 cx,
4392 );
4393 }
4394 }
4395
4396 let blamed_display_rows = self.layout_blame_entries(
4397 buffer_rows.into_iter(),
4398 em_width,
4399 scroll_position,
4400 line_height,
4401 &gutter_hitbox,
4402 gutter_dimensions.git_blame_entries_width,
4403 cx,
4404 );
4405
4406 let scroll_max = point(
4407 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
4408 max_row.as_f32(),
4409 );
4410
4411 self.editor.update(cx, |editor, cx| {
4412 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
4413
4414 let autoscrolled = if autoscroll_horizontally {
4415 editor.autoscroll_horizontally(
4416 start_row,
4417 text_hitbox.size.width,
4418 scroll_width,
4419 em_width,
4420 &line_layouts,
4421 cx,
4422 )
4423 } else {
4424 false
4425 };
4426
4427 if clamped || autoscrolled {
4428 snapshot = editor.snapshot(cx);
4429 scroll_position = snapshot.scroll_position();
4430 }
4431 });
4432
4433 cx.with_element_namespace("blocks", |cx| {
4434 self.layout_blocks(
4435 &mut blocks,
4436 &hitbox,
4437 line_height,
4438 scroll_pixel_position,
4439 cx,
4440 );
4441 });
4442
4443 let cursors = self.collect_cursors(&snapshot, cx);
4444 let visible_row_range = start_row..end_row;
4445 let non_visible_cursors = cursors
4446 .iter()
4447 .any(move |c| !visible_row_range.contains(&c.0.row()));
4448
4449 let visible_cursors = self.layout_visible_cursors(
4450 &snapshot,
4451 &selections,
4452 start_row..end_row,
4453 &line_layouts,
4454 &text_hitbox,
4455 content_origin,
4456 scroll_position,
4457 scroll_pixel_position,
4458 line_height,
4459 em_width,
4460 autoscroll_containing_element,
4461 cx,
4462 );
4463
4464 let scrollbar_layout = self.layout_scrollbar(
4465 &snapshot,
4466 bounds,
4467 scroll_position,
4468 height_in_lines,
4469 non_visible_cursors,
4470 cx,
4471 );
4472
4473 let folds = cx.with_element_namespace("folds", |cx| {
4474 self.layout_folds(
4475 &snapshot,
4476 content_origin,
4477 start_anchor..end_anchor,
4478 start_row..end_row,
4479 scroll_pixel_position,
4480 line_height,
4481 &line_layouts,
4482 cx,
4483 )
4484 });
4485
4486 let gutter_settings = EditorSettings::get_global(cx).gutter;
4487
4488 let mut context_menu_visible = false;
4489 let mut code_actions_indicator = None;
4490 if let Some(newest_selection_head) = newest_selection_head {
4491 if (start_row..end_row).contains(&newest_selection_head.row()) {
4492 context_menu_visible = self.layout_context_menu(
4493 line_height,
4494 &hitbox,
4495 &text_hitbox,
4496 content_origin,
4497 start_row,
4498 scroll_pixel_position,
4499 &line_layouts,
4500 newest_selection_head,
4501 gutter_dimensions.width - gutter_dimensions.left_padding,
4502 cx,
4503 );
4504
4505 let show_code_actions = snapshot
4506 .show_code_actions
4507 .unwrap_or_else(|| gutter_settings.code_actions);
4508 if show_code_actions {
4509 let newest_selection_point =
4510 newest_selection_head.to_point(&snapshot.display_snapshot);
4511 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
4512 MultiBufferRow(newest_selection_point.row),
4513 );
4514 if let Some((buffer, range)) = buffer {
4515 let buffer_id = buffer.remote_id();
4516 let row = range.start.row;
4517 let has_test_indicator =
4518 self.editor.read(cx).tasks.contains_key(&(buffer_id, row));
4519
4520 if !has_test_indicator {
4521 code_actions_indicator = self
4522 .layout_code_actions_indicator(
4523 line_height,
4524 newest_selection_head,
4525 scroll_pixel_position,
4526 &gutter_dimensions,
4527 &gutter_hitbox,
4528 cx,
4529 );
4530 }
4531 }
4532 }
4533 }
4534 }
4535
4536 let test_indicators = self.layout_run_indicators(
4537 line_height,
4538 scroll_pixel_position,
4539 &gutter_dimensions,
4540 &gutter_hitbox,
4541 &snapshot,
4542 cx,
4543 );
4544
4545 if !context_menu_visible && !cx.has_active_drag() {
4546 self.layout_hover_popovers(
4547 &snapshot,
4548 &hitbox,
4549 &text_hitbox,
4550 start_row..end_row,
4551 content_origin,
4552 scroll_pixel_position,
4553 &line_layouts,
4554 line_height,
4555 em_width,
4556 cx,
4557 );
4558 }
4559
4560 let mouse_context_menu = self.layout_mouse_context_menu(cx);
4561
4562 cx.with_element_namespace("gutter_fold_toggles", |cx| {
4563 self.prepaint_gutter_fold_toggles(
4564 &mut gutter_fold_toggles,
4565 line_height,
4566 &gutter_dimensions,
4567 gutter_settings,
4568 scroll_pixel_position,
4569 &gutter_hitbox,
4570 cx,
4571 )
4572 });
4573
4574 let invisible_symbol_font_size = font_size / 2.;
4575 let tab_invisible = cx
4576 .text_system()
4577 .shape_line(
4578 "→".into(),
4579 invisible_symbol_font_size,
4580 &[TextRun {
4581 len: "→".len(),
4582 font: self.style.text.font(),
4583 color: cx.theme().colors().editor_invisible,
4584 background_color: None,
4585 underline: None,
4586 strikethrough: None,
4587 }],
4588 )
4589 .unwrap();
4590 let space_invisible = cx
4591 .text_system()
4592 .shape_line(
4593 "•".into(),
4594 invisible_symbol_font_size,
4595 &[TextRun {
4596 len: "•".len(),
4597 font: self.style.text.font(),
4598 color: cx.theme().colors().editor_invisible,
4599 background_color: None,
4600 underline: None,
4601 strikethrough: None,
4602 }],
4603 )
4604 .unwrap();
4605
4606 EditorLayout {
4607 mode: snapshot.mode,
4608 position_map: Arc::new(PositionMap {
4609 size: bounds.size,
4610 scroll_pixel_position,
4611 scroll_max,
4612 line_layouts,
4613 line_height,
4614 em_width,
4615 em_advance,
4616 snapshot,
4617 }),
4618 visible_display_row_range: start_row..end_row,
4619 wrap_guides,
4620 indent_guides,
4621 hitbox,
4622 text_hitbox,
4623 gutter_hitbox,
4624 gutter_dimensions,
4625 content_origin,
4626 scrollbar_layout,
4627 active_rows,
4628 highlighted_rows,
4629 highlighted_ranges,
4630 redacted_ranges,
4631 line_numbers,
4632 display_hunks,
4633 blamed_display_rows,
4634 inline_blame,
4635 folds,
4636 blocks,
4637 cursors,
4638 visible_cursors,
4639 selections,
4640 mouse_context_menu,
4641 test_indicators,
4642 code_actions_indicator,
4643 gutter_fold_toggles,
4644 flap_trailers,
4645 tab_invisible,
4646 space_invisible,
4647 }
4648 })
4649 })
4650 })
4651 }
4652
4653 fn paint(
4654 &mut self,
4655 _: Option<&GlobalElementId>,
4656 bounds: Bounds<gpui::Pixels>,
4657 _: &mut Self::RequestLayoutState,
4658 layout: &mut Self::PrepaintState,
4659 cx: &mut WindowContext,
4660 ) {
4661 let focus_handle = self.editor.focus_handle(cx);
4662 let key_context = self.editor.read(cx).key_context(cx);
4663 cx.set_focus_handle(&focus_handle);
4664 cx.set_key_context(key_context);
4665 cx.handle_input(
4666 &focus_handle,
4667 ElementInputHandler::new(bounds, self.editor.clone()),
4668 );
4669 self.register_actions(cx);
4670 self.register_key_listeners(cx, layout);
4671
4672 let text_style = TextStyleRefinement {
4673 font_size: Some(self.style.text.font_size),
4674 line_height: Some(self.style.text.line_height),
4675 ..Default::default()
4676 };
4677 let mouse_position = cx.mouse_position();
4678 let hovered_hunk = layout
4679 .display_hunks
4680 .iter()
4681 .find_map(|(hunk, hunk_hitbox)| match hunk {
4682 DisplayDiffHunk::Folded { .. } => None,
4683 DisplayDiffHunk::Unfolded {
4684 diff_base_byte_range,
4685 multi_buffer_range,
4686 status,
4687 ..
4688 } => {
4689 if hunk_hitbox
4690 .as_ref()
4691 .map(|hitbox| hitbox.contains(&mouse_position))
4692 .unwrap_or(false)
4693 {
4694 Some(HunkToExpand {
4695 status: *status,
4696 multi_buffer_range: multi_buffer_range.clone(),
4697 diff_base_byte_range: diff_base_byte_range.clone(),
4698 })
4699 } else {
4700 None
4701 }
4702 }
4703 });
4704 let rem_size = self.rem_size(cx);
4705 cx.with_rem_size(rem_size, |cx| {
4706 cx.with_text_style(Some(text_style), |cx| {
4707 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
4708 self.paint_mouse_listeners(layout, hovered_hunk, cx);
4709 self.paint_background(layout, cx);
4710 self.paint_indent_guides(layout, cx);
4711 if layout.gutter_hitbox.size.width > Pixels::ZERO {
4712 self.paint_gutter(layout, cx)
4713 }
4714
4715 self.paint_text(layout, cx);
4716
4717 if !layout.blocks.is_empty() {
4718 cx.with_element_namespace("blocks", |cx| {
4719 self.paint_blocks(layout, cx);
4720 });
4721 }
4722
4723 self.paint_scrollbar(layout, cx);
4724 self.paint_mouse_context_menu(layout, cx);
4725 });
4726 })
4727 })
4728 }
4729}
4730
4731impl IntoElement for EditorElement {
4732 type Element = Self;
4733
4734 fn into_element(self) -> Self::Element {
4735 self
4736 }
4737}
4738
4739pub struct EditorLayout {
4740 position_map: Arc<PositionMap>,
4741 hitbox: Hitbox,
4742 text_hitbox: Hitbox,
4743 gutter_hitbox: Hitbox,
4744 gutter_dimensions: GutterDimensions,
4745 content_origin: gpui::Point<Pixels>,
4746 scrollbar_layout: Option<ScrollbarLayout>,
4747 mode: EditorMode,
4748 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
4749 indent_guides: Option<Vec<IndentGuideLayout>>,
4750 visible_display_row_range: Range<DisplayRow>,
4751 active_rows: BTreeMap<DisplayRow, bool>,
4752 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
4753 line_numbers: Vec<Option<ShapedLine>>,
4754 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
4755 blamed_display_rows: Option<Vec<AnyElement>>,
4756 inline_blame: Option<AnyElement>,
4757 folds: Vec<FoldLayout>,
4758 blocks: Vec<BlockLayout>,
4759 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
4760 redacted_ranges: Vec<Range<DisplayPoint>>,
4761 cursors: Vec<(DisplayPoint, Hsla)>,
4762 visible_cursors: Vec<CursorLayout>,
4763 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
4764 code_actions_indicator: Option<AnyElement>,
4765 test_indicators: Vec<AnyElement>,
4766 gutter_fold_toggles: Vec<Option<AnyElement>>,
4767 flap_trailers: Vec<Option<FlapTrailerLayout>>,
4768 mouse_context_menu: Option<AnyElement>,
4769 tab_invisible: ShapedLine,
4770 space_invisible: ShapedLine,
4771}
4772
4773impl EditorLayout {
4774 fn line_end_overshoot(&self) -> Pixels {
4775 0.15 * self.position_map.line_height
4776 }
4777}
4778
4779struct ColoredRange<T> {
4780 start: T,
4781 end: T,
4782 color: Hsla,
4783}
4784
4785#[derive(Clone)]
4786struct ScrollbarLayout {
4787 hitbox: Hitbox,
4788 visible_row_range: Range<f32>,
4789 visible: bool,
4790 row_height: Pixels,
4791 thumb_height: Pixels,
4792}
4793
4794impl ScrollbarLayout {
4795 const BORDER_WIDTH: Pixels = px(1.0);
4796 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
4797 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
4798 const MIN_THUMB_HEIGHT: Pixels = px(20.0);
4799
4800 fn thumb_bounds(&self) -> Bounds<Pixels> {
4801 let thumb_top = self.y_for_row(self.visible_row_range.start);
4802 let thumb_bottom = thumb_top + self.thumb_height;
4803 Bounds::from_corners(
4804 point(self.hitbox.left(), thumb_top),
4805 point(self.hitbox.right(), thumb_bottom),
4806 )
4807 }
4808
4809 fn y_for_row(&self, row: f32) -> Pixels {
4810 self.hitbox.top() + row * self.row_height
4811 }
4812
4813 fn marker_quads_for_ranges(
4814 &self,
4815 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
4816 column: Option<usize>,
4817 ) -> Vec<PaintQuad> {
4818 struct MinMax {
4819 min: Pixels,
4820 max: Pixels,
4821 }
4822 let (x_range, height_limit) = if let Some(column) = column {
4823 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
4824 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
4825 let end = start + column_width;
4826 (
4827 Range { start, end },
4828 MinMax {
4829 min: Self::MIN_MARKER_HEIGHT,
4830 max: px(f32::MAX),
4831 },
4832 )
4833 } else {
4834 (
4835 Range {
4836 start: Self::BORDER_WIDTH,
4837 end: self.hitbox.size.width,
4838 },
4839 MinMax {
4840 min: Self::LINE_MARKER_HEIGHT,
4841 max: Self::LINE_MARKER_HEIGHT,
4842 },
4843 )
4844 };
4845
4846 let row_to_y = |row: DisplayRow| row.as_f32() * self.row_height;
4847 let mut pixel_ranges = row_ranges
4848 .into_iter()
4849 .map(|range| {
4850 let start_y = row_to_y(range.start);
4851 let end_y = row_to_y(range.end)
4852 + self.row_height.max(height_limit.min).min(height_limit.max);
4853 ColoredRange {
4854 start: start_y,
4855 end: end_y,
4856 color: range.color,
4857 }
4858 })
4859 .peekable();
4860
4861 let mut quads = Vec::new();
4862 while let Some(mut pixel_range) = pixel_ranges.next() {
4863 while let Some(next_pixel_range) = pixel_ranges.peek() {
4864 if pixel_range.end >= next_pixel_range.start - px(1.0)
4865 && pixel_range.color == next_pixel_range.color
4866 {
4867 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
4868 pixel_ranges.next();
4869 } else {
4870 break;
4871 }
4872 }
4873
4874 let bounds = Bounds::from_corners(
4875 point(x_range.start, pixel_range.start),
4876 point(x_range.end, pixel_range.end),
4877 );
4878 quads.push(quad(
4879 bounds,
4880 Corners::default(),
4881 pixel_range.color,
4882 Edges::default(),
4883 Hsla::transparent_black(),
4884 ));
4885 }
4886
4887 quads
4888 }
4889}
4890
4891struct FlapTrailerLayout {
4892 element: AnyElement,
4893 bounds: Bounds<Pixels>,
4894}
4895
4896struct FoldLayout {
4897 display_range: Range<DisplayPoint>,
4898 hover_element: AnyElement,
4899}
4900
4901struct PositionMap {
4902 size: Size<Pixels>,
4903 line_height: Pixels,
4904 scroll_pixel_position: gpui::Point<Pixels>,
4905 scroll_max: gpui::Point<f32>,
4906 em_width: Pixels,
4907 em_advance: Pixels,
4908 line_layouts: Vec<LineWithInvisibles>,
4909 snapshot: EditorSnapshot,
4910}
4911
4912#[derive(Debug, Copy, Clone)]
4913pub struct PointForPosition {
4914 pub previous_valid: DisplayPoint,
4915 pub next_valid: DisplayPoint,
4916 pub exact_unclipped: DisplayPoint,
4917 pub column_overshoot_after_line_end: u32,
4918}
4919
4920impl PointForPosition {
4921 pub fn as_valid(&self) -> Option<DisplayPoint> {
4922 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
4923 Some(self.previous_valid)
4924 } else {
4925 None
4926 }
4927 }
4928}
4929
4930impl PositionMap {
4931 fn point_for_position(
4932 &self,
4933 text_bounds: Bounds<Pixels>,
4934 position: gpui::Point<Pixels>,
4935 ) -> PointForPosition {
4936 let scroll_position = self.snapshot.scroll_position();
4937 let position = position - text_bounds.origin;
4938 let y = position.y.max(px(0.)).min(self.size.height);
4939 let x = position.x + (scroll_position.x * self.em_width);
4940 let row = ((y / self.line_height) + scroll_position.y) as u32;
4941
4942 let (column, x_overshoot_after_line_end) = if let Some(line) = self
4943 .line_layouts
4944 .get(row as usize - scroll_position.y as usize)
4945 .map(|LineWithInvisibles { line, .. }| line)
4946 {
4947 if let Some(ix) = line.index_for_x(x) {
4948 (ix as u32, px(0.))
4949 } else {
4950 (line.len as u32, px(0.).max(x - line.width))
4951 }
4952 } else {
4953 (0, x)
4954 };
4955
4956 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
4957 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
4958 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
4959
4960 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
4961 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
4962 PointForPosition {
4963 previous_valid,
4964 next_valid,
4965 exact_unclipped,
4966 column_overshoot_after_line_end,
4967 }
4968 }
4969}
4970
4971struct BlockLayout {
4972 row: DisplayRow,
4973 element: AnyElement,
4974 available_space: Size<AvailableSpace>,
4975 style: BlockStyle,
4976}
4977
4978fn layout_line(
4979 row: DisplayRow,
4980 snapshot: &EditorSnapshot,
4981 style: &EditorStyle,
4982 cx: &WindowContext,
4983) -> Result<ShapedLine> {
4984 let mut line = snapshot.line(row);
4985
4986 let len = {
4987 let line_len = line.len();
4988 if line_len > MAX_LINE_LEN {
4989 let mut len = MAX_LINE_LEN;
4990 while !line.is_char_boundary(len) {
4991 len -= 1;
4992 }
4993
4994 line.truncate(len);
4995 len
4996 } else {
4997 line_len
4998 }
4999 };
5000
5001 cx.text_system().shape_line(
5002 line.into(),
5003 style.text.font_size.to_pixels(cx.rem_size()),
5004 &[TextRun {
5005 len,
5006 font: style.text.font(),
5007 color: Hsla::default(),
5008 background_color: None,
5009 underline: None,
5010 strikethrough: None,
5011 }],
5012 )
5013}
5014
5015#[derive(Debug)]
5016pub struct IndentGuideLayout {
5017 origin: gpui::Point<Pixels>,
5018 length: Pixels,
5019 indent_size: Pixels,
5020 depth: u32,
5021 active: bool,
5022}
5023
5024pub struct CursorLayout {
5025 origin: gpui::Point<Pixels>,
5026 block_width: Pixels,
5027 line_height: Pixels,
5028 color: Hsla,
5029 shape: CursorShape,
5030 block_text: Option<ShapedLine>,
5031 cursor_name: Option<AnyElement>,
5032}
5033
5034#[derive(Debug)]
5035pub struct CursorName {
5036 string: SharedString,
5037 color: Hsla,
5038 is_top_row: bool,
5039}
5040
5041impl CursorLayout {
5042 pub fn new(
5043 origin: gpui::Point<Pixels>,
5044 block_width: Pixels,
5045 line_height: Pixels,
5046 color: Hsla,
5047 shape: CursorShape,
5048 block_text: Option<ShapedLine>,
5049 ) -> CursorLayout {
5050 CursorLayout {
5051 origin,
5052 block_width,
5053 line_height,
5054 color,
5055 shape,
5056 block_text,
5057 cursor_name: None,
5058 }
5059 }
5060
5061 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
5062 Bounds {
5063 origin: self.origin + origin,
5064 size: size(self.block_width, self.line_height),
5065 }
5066 }
5067
5068 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
5069 match self.shape {
5070 CursorShape::Bar => Bounds {
5071 origin: self.origin + origin,
5072 size: size(px(2.0), self.line_height),
5073 },
5074 CursorShape::Block | CursorShape::Hollow => Bounds {
5075 origin: self.origin + origin,
5076 size: size(self.block_width, self.line_height),
5077 },
5078 CursorShape::Underscore => Bounds {
5079 origin: self.origin
5080 + origin
5081 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
5082 size: size(self.block_width, px(2.0)),
5083 },
5084 }
5085 }
5086
5087 pub fn layout(
5088 &mut self,
5089 origin: gpui::Point<Pixels>,
5090 cursor_name: Option<CursorName>,
5091 cx: &mut WindowContext,
5092 ) {
5093 if let Some(cursor_name) = cursor_name {
5094 let bounds = self.bounds(origin);
5095 let text_size = self.line_height / 1.5;
5096
5097 let name_origin = if cursor_name.is_top_row {
5098 point(bounds.right() - px(1.), bounds.top())
5099 } else {
5100 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
5101 };
5102 let mut name_element = div()
5103 .bg(self.color)
5104 .text_size(text_size)
5105 .px_0p5()
5106 .line_height(text_size + px(2.))
5107 .text_color(cursor_name.color)
5108 .child(cursor_name.string.clone())
5109 .into_any_element();
5110
5111 name_element.prepaint_as_root(
5112 name_origin,
5113 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
5114 cx,
5115 );
5116
5117 self.cursor_name = Some(name_element);
5118 }
5119 }
5120
5121 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
5122 let bounds = self.bounds(origin);
5123
5124 //Draw background or border quad
5125 let cursor = if matches!(self.shape, CursorShape::Hollow) {
5126 outline(bounds, self.color)
5127 } else {
5128 fill(bounds, self.color)
5129 };
5130
5131 if let Some(name) = &mut self.cursor_name {
5132 name.paint(cx);
5133 }
5134
5135 cx.paint_quad(cursor);
5136
5137 if let Some(block_text) = &self.block_text {
5138 block_text
5139 .paint(self.origin + origin, self.line_height, cx)
5140 .log_err();
5141 }
5142 }
5143
5144 pub fn shape(&self) -> CursorShape {
5145 self.shape
5146 }
5147}
5148
5149#[derive(Debug)]
5150pub struct HighlightedRange {
5151 pub start_y: Pixels,
5152 pub line_height: Pixels,
5153 pub lines: Vec<HighlightedRangeLine>,
5154 pub color: Hsla,
5155 pub corner_radius: Pixels,
5156}
5157
5158#[derive(Debug)]
5159pub struct HighlightedRangeLine {
5160 pub start_x: Pixels,
5161 pub end_x: Pixels,
5162}
5163
5164impl HighlightedRange {
5165 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
5166 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
5167 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
5168 self.paint_lines(
5169 self.start_y + self.line_height,
5170 &self.lines[1..],
5171 bounds,
5172 cx,
5173 );
5174 } else {
5175 self.paint_lines(self.start_y, &self.lines, bounds, cx);
5176 }
5177 }
5178
5179 fn paint_lines(
5180 &self,
5181 start_y: Pixels,
5182 lines: &[HighlightedRangeLine],
5183 _bounds: Bounds<Pixels>,
5184 cx: &mut WindowContext,
5185 ) {
5186 if lines.is_empty() {
5187 return;
5188 }
5189
5190 let first_line = lines.first().unwrap();
5191 let last_line = lines.last().unwrap();
5192
5193 let first_top_left = point(first_line.start_x, start_y);
5194 let first_top_right = point(first_line.end_x, start_y);
5195
5196 let curve_height = point(Pixels::ZERO, self.corner_radius);
5197 let curve_width = |start_x: Pixels, end_x: Pixels| {
5198 let max = (end_x - start_x) / 2.;
5199 let width = if max < self.corner_radius {
5200 max
5201 } else {
5202 self.corner_radius
5203 };
5204
5205 point(width, Pixels::ZERO)
5206 };
5207
5208 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
5209 let mut path = gpui::Path::new(first_top_right - top_curve_width);
5210 path.curve_to(first_top_right + curve_height, first_top_right);
5211
5212 let mut iter = lines.iter().enumerate().peekable();
5213 while let Some((ix, line)) = iter.next() {
5214 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
5215
5216 if let Some((_, next_line)) = iter.peek() {
5217 let next_top_right = point(next_line.end_x, bottom_right.y);
5218
5219 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
5220 Ordering::Equal => {
5221 path.line_to(bottom_right);
5222 }
5223 Ordering::Less => {
5224 let curve_width = curve_width(next_top_right.x, bottom_right.x);
5225 path.line_to(bottom_right - curve_height);
5226 if self.corner_radius > Pixels::ZERO {
5227 path.curve_to(bottom_right - curve_width, bottom_right);
5228 }
5229 path.line_to(next_top_right + curve_width);
5230 if self.corner_radius > Pixels::ZERO {
5231 path.curve_to(next_top_right + curve_height, next_top_right);
5232 }
5233 }
5234 Ordering::Greater => {
5235 let curve_width = curve_width(bottom_right.x, next_top_right.x);
5236 path.line_to(bottom_right - curve_height);
5237 if self.corner_radius > Pixels::ZERO {
5238 path.curve_to(bottom_right + curve_width, bottom_right);
5239 }
5240 path.line_to(next_top_right - curve_width);
5241 if self.corner_radius > Pixels::ZERO {
5242 path.curve_to(next_top_right + curve_height, next_top_right);
5243 }
5244 }
5245 }
5246 } else {
5247 let curve_width = curve_width(line.start_x, line.end_x);
5248 path.line_to(bottom_right - curve_height);
5249 if self.corner_radius > Pixels::ZERO {
5250 path.curve_to(bottom_right - curve_width, bottom_right);
5251 }
5252
5253 let bottom_left = point(line.start_x, bottom_right.y);
5254 path.line_to(bottom_left + curve_width);
5255 if self.corner_radius > Pixels::ZERO {
5256 path.curve_to(bottom_left - curve_height, bottom_left);
5257 }
5258 }
5259 }
5260
5261 if first_line.start_x > last_line.start_x {
5262 let curve_width = curve_width(last_line.start_x, first_line.start_x);
5263 let second_top_left = point(last_line.start_x, start_y + self.line_height);
5264 path.line_to(second_top_left + curve_height);
5265 if self.corner_radius > Pixels::ZERO {
5266 path.curve_to(second_top_left + curve_width, second_top_left);
5267 }
5268 let first_bottom_left = point(first_line.start_x, second_top_left.y);
5269 path.line_to(first_bottom_left - curve_width);
5270 if self.corner_radius > Pixels::ZERO {
5271 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
5272 }
5273 }
5274
5275 path.line_to(first_top_left + curve_height);
5276 if self.corner_radius > Pixels::ZERO {
5277 path.curve_to(first_top_left + top_curve_width, first_top_left);
5278 }
5279 path.line_to(first_top_right - top_curve_width);
5280
5281 cx.paint_path(path, self.color);
5282 }
5283}
5284
5285pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
5286 (delta.pow(1.5) / 100.0).into()
5287}
5288
5289fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
5290 (delta.pow(1.2) / 300.0).into()
5291}
5292
5293#[cfg(test)]
5294mod tests {
5295 use super::*;
5296 use crate::{
5297 display_map::{BlockDisposition, BlockProperties},
5298 editor_tests::{init_test, update_test_language_settings},
5299 Editor, MultiBuffer,
5300 };
5301 use gpui::{TestAppContext, VisualTestContext};
5302 use language::language_settings;
5303 use log::info;
5304 use std::num::NonZeroU32;
5305 use ui::Context;
5306 use util::test::sample_text;
5307
5308 #[gpui::test]
5309 fn test_shape_line_numbers(cx: &mut TestAppContext) {
5310 init_test(cx, |_| {});
5311 let window = cx.add_window(|cx| {
5312 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
5313 Editor::new(EditorMode::Full, buffer, None, cx)
5314 });
5315
5316 let editor = window.root(cx).unwrap();
5317 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
5318 let element = EditorElement::new(&editor, style);
5319 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
5320
5321 let layouts = cx
5322 .update_window(*window, |_, cx| {
5323 element.layout_line_numbers(
5324 DisplayRow(0)..DisplayRow(6),
5325 (0..6).map(MultiBufferRow).map(Some),
5326 &Default::default(),
5327 Some(DisplayPoint::new(DisplayRow(0), 0)),
5328 &snapshot,
5329 cx,
5330 )
5331 })
5332 .unwrap();
5333 assert_eq!(layouts.len(), 6);
5334
5335 let relative_rows = window
5336 .update(cx, |editor, cx| {
5337 let snapshot = editor.snapshot(cx);
5338 element.calculate_relative_line_numbers(
5339 &snapshot,
5340 &(DisplayRow(0)..DisplayRow(6)),
5341 Some(DisplayRow(3)),
5342 )
5343 })
5344 .unwrap();
5345 assert_eq!(relative_rows[&DisplayRow(0)], 3);
5346 assert_eq!(relative_rows[&DisplayRow(1)], 2);
5347 assert_eq!(relative_rows[&DisplayRow(2)], 1);
5348 // current line has no relative number
5349 assert_eq!(relative_rows[&DisplayRow(4)], 1);
5350 assert_eq!(relative_rows[&DisplayRow(5)], 2);
5351
5352 // works if cursor is before screen
5353 let relative_rows = window
5354 .update(cx, |editor, cx| {
5355 let snapshot = editor.snapshot(cx);
5356 element.calculate_relative_line_numbers(
5357 &snapshot,
5358 &(DisplayRow(3)..DisplayRow(6)),
5359 Some(DisplayRow(1)),
5360 )
5361 })
5362 .unwrap();
5363 assert_eq!(relative_rows.len(), 3);
5364 assert_eq!(relative_rows[&DisplayRow(3)], 2);
5365 assert_eq!(relative_rows[&DisplayRow(4)], 3);
5366 assert_eq!(relative_rows[&DisplayRow(5)], 4);
5367
5368 // works if cursor is after screen
5369 let relative_rows = window
5370 .update(cx, |editor, cx| {
5371 let snapshot = editor.snapshot(cx);
5372 element.calculate_relative_line_numbers(
5373 &snapshot,
5374 &(DisplayRow(0)..DisplayRow(3)),
5375 Some(DisplayRow(6)),
5376 )
5377 })
5378 .unwrap();
5379 assert_eq!(relative_rows.len(), 3);
5380 assert_eq!(relative_rows[&DisplayRow(0)], 5);
5381 assert_eq!(relative_rows[&DisplayRow(1)], 4);
5382 assert_eq!(relative_rows[&DisplayRow(2)], 3);
5383 }
5384
5385 #[gpui::test]
5386 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
5387 init_test(cx, |_| {});
5388
5389 let window = cx.add_window(|cx| {
5390 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
5391 Editor::new(EditorMode::Full, buffer, None, cx)
5392 });
5393 let cx = &mut VisualTestContext::from_window(*window, cx);
5394 let editor = window.root(cx).unwrap();
5395 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
5396
5397 window
5398 .update(cx, |editor, cx| {
5399 editor.cursor_shape = CursorShape::Block;
5400 editor.change_selections(None, cx, |s| {
5401 s.select_ranges([
5402 Point::new(0, 0)..Point::new(1, 0),
5403 Point::new(3, 2)..Point::new(3, 3),
5404 Point::new(5, 6)..Point::new(6, 0),
5405 ]);
5406 });
5407 })
5408 .unwrap();
5409
5410 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
5411 EditorElement::new(&editor, style)
5412 });
5413
5414 assert_eq!(state.selections.len(), 1);
5415 let local_selections = &state.selections[0].1;
5416 assert_eq!(local_selections.len(), 3);
5417 // moves cursor back one line
5418 assert_eq!(
5419 local_selections[0].head,
5420 DisplayPoint::new(DisplayRow(0), 6)
5421 );
5422 assert_eq!(
5423 local_selections[0].range,
5424 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
5425 );
5426
5427 // moves cursor back one column
5428 assert_eq!(
5429 local_selections[1].range,
5430 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
5431 );
5432 assert_eq!(
5433 local_selections[1].head,
5434 DisplayPoint::new(DisplayRow(3), 2)
5435 );
5436
5437 // leaves cursor on the max point
5438 assert_eq!(
5439 local_selections[2].range,
5440 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
5441 );
5442 assert_eq!(
5443 local_selections[2].head,
5444 DisplayPoint::new(DisplayRow(6), 0)
5445 );
5446
5447 // active lines does not include 1 (even though the range of the selection does)
5448 assert_eq!(
5449 state.active_rows.keys().cloned().collect::<Vec<_>>(),
5450 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
5451 );
5452
5453 // multi-buffer support
5454 // in DisplayPoint coordinates, this is what we're dealing with:
5455 // 0: [[file
5456 // 1: header]]
5457 // 2: aaaaaa
5458 // 3: bbbbbb
5459 // 4: cccccc
5460 // 5:
5461 // 6: ...
5462 // 7: ffffff
5463 // 8: gggggg
5464 // 9: hhhhhh
5465 // 10:
5466 // 11: [[file
5467 // 12: header]]
5468 // 13: bbbbbb
5469 // 14: cccccc
5470 // 15: dddddd
5471 let window = cx.add_window(|cx| {
5472 let buffer = MultiBuffer::build_multi(
5473 [
5474 (
5475 &(sample_text(8, 6, 'a') + "\n"),
5476 vec![
5477 Point::new(0, 0)..Point::new(3, 0),
5478 Point::new(4, 0)..Point::new(7, 0),
5479 ],
5480 ),
5481 (
5482 &(sample_text(8, 6, 'a') + "\n"),
5483 vec![Point::new(1, 0)..Point::new(3, 0)],
5484 ),
5485 ],
5486 cx,
5487 );
5488 Editor::new(EditorMode::Full, buffer, None, cx)
5489 });
5490 let editor = window.root(cx).unwrap();
5491 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
5492 let _state = window.update(cx, |editor, cx| {
5493 editor.cursor_shape = CursorShape::Block;
5494 editor.change_selections(None, cx, |s| {
5495 s.select_display_ranges([
5496 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
5497 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
5498 ]);
5499 });
5500 });
5501
5502 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
5503 EditorElement::new(&editor, style)
5504 });
5505 assert_eq!(state.selections.len(), 1);
5506 let local_selections = &state.selections[0].1;
5507 assert_eq!(local_selections.len(), 2);
5508
5509 // moves cursor on excerpt boundary back a line
5510 // and doesn't allow selection to bleed through
5511 assert_eq!(
5512 local_selections[0].range,
5513 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(6), 0)
5514 );
5515 assert_eq!(
5516 local_selections[0].head,
5517 DisplayPoint::new(DisplayRow(5), 0)
5518 );
5519 // moves cursor on buffer boundary back two lines
5520 // and doesn't allow selection to bleed through
5521 assert_eq!(
5522 local_selections[1].range,
5523 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(11), 0)
5524 );
5525 assert_eq!(
5526 local_selections[1].head,
5527 DisplayPoint::new(DisplayRow(10), 0)
5528 );
5529 }
5530
5531 #[gpui::test]
5532 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
5533 init_test(cx, |_| {});
5534
5535 let window = cx.add_window(|cx| {
5536 let buffer = MultiBuffer::build_simple("", cx);
5537 Editor::new(EditorMode::Full, buffer, None, cx)
5538 });
5539 let cx = &mut VisualTestContext::from_window(*window, cx);
5540 let editor = window.root(cx).unwrap();
5541 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
5542 window
5543 .update(cx, |editor, cx| {
5544 editor.set_placeholder_text("hello", cx);
5545 editor.insert_blocks(
5546 [BlockProperties {
5547 style: BlockStyle::Fixed,
5548 disposition: BlockDisposition::Above,
5549 height: 3,
5550 position: Anchor::min(),
5551 render: Box::new(|_| div().into_any()),
5552 }],
5553 None,
5554 cx,
5555 );
5556
5557 // Blur the editor so that it displays placeholder text.
5558 cx.blur();
5559 })
5560 .unwrap();
5561
5562 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
5563 EditorElement::new(&editor, style)
5564 });
5565 assert_eq!(state.position_map.line_layouts.len(), 4);
5566 assert_eq!(
5567 state
5568 .line_numbers
5569 .iter()
5570 .map(Option::is_some)
5571 .collect::<Vec<_>>(),
5572 &[false, false, false, true]
5573 );
5574 }
5575
5576 #[gpui::test]
5577 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
5578 const TAB_SIZE: u32 = 4;
5579
5580 let input_text = "\t \t|\t| a b";
5581 let expected_invisibles = vec![
5582 Invisible::Tab {
5583 line_start_offset: 0,
5584 },
5585 Invisible::Whitespace {
5586 line_offset: TAB_SIZE as usize,
5587 },
5588 Invisible::Tab {
5589 line_start_offset: TAB_SIZE as usize + 1,
5590 },
5591 Invisible::Tab {
5592 line_start_offset: TAB_SIZE as usize * 2 + 1,
5593 },
5594 Invisible::Whitespace {
5595 line_offset: TAB_SIZE as usize * 3 + 1,
5596 },
5597 Invisible::Whitespace {
5598 line_offset: TAB_SIZE as usize * 3 + 3,
5599 },
5600 ];
5601 assert_eq!(
5602 expected_invisibles.len(),
5603 input_text
5604 .chars()
5605 .filter(|initial_char| initial_char.is_whitespace())
5606 .count(),
5607 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
5608 );
5609
5610 init_test(cx, |s| {
5611 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
5612 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
5613 });
5614
5615 let actual_invisibles =
5616 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
5617
5618 assert_eq!(expected_invisibles, actual_invisibles);
5619 }
5620
5621 #[gpui::test]
5622 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
5623 init_test(cx, |s| {
5624 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
5625 s.defaults.tab_size = NonZeroU32::new(4);
5626 });
5627
5628 for editor_mode_without_invisibles in [
5629 EditorMode::SingleLine,
5630 EditorMode::AutoHeight { max_lines: 100 },
5631 ] {
5632 let invisibles = collect_invisibles_from_new_editor(
5633 cx,
5634 editor_mode_without_invisibles,
5635 "\t\t\t| | a b",
5636 px(500.0),
5637 );
5638 assert!(invisibles.is_empty(),
5639 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
5640 }
5641 }
5642
5643 #[gpui::test]
5644 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
5645 let tab_size = 4;
5646 let input_text = "a\tbcd ".repeat(9);
5647 let repeated_invisibles = [
5648 Invisible::Tab {
5649 line_start_offset: 1,
5650 },
5651 Invisible::Whitespace {
5652 line_offset: tab_size as usize + 3,
5653 },
5654 Invisible::Whitespace {
5655 line_offset: tab_size as usize + 4,
5656 },
5657 Invisible::Whitespace {
5658 line_offset: tab_size as usize + 5,
5659 },
5660 ];
5661 let expected_invisibles = std::iter::once(repeated_invisibles)
5662 .cycle()
5663 .take(9)
5664 .flatten()
5665 .collect::<Vec<_>>();
5666 assert_eq!(
5667 expected_invisibles.len(),
5668 input_text
5669 .chars()
5670 .filter(|initial_char| initial_char.is_whitespace())
5671 .count(),
5672 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
5673 );
5674 info!("Expected invisibles: {expected_invisibles:?}");
5675
5676 init_test(cx, |_| {});
5677
5678 // Put the same string with repeating whitespace pattern into editors of various size,
5679 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
5680 let resize_step = 10.0;
5681 let mut editor_width = 200.0;
5682 while editor_width <= 1000.0 {
5683 update_test_language_settings(cx, |s| {
5684 s.defaults.tab_size = NonZeroU32::new(tab_size);
5685 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
5686 s.defaults.preferred_line_length = Some(editor_width as u32);
5687 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
5688 });
5689
5690 let actual_invisibles = collect_invisibles_from_new_editor(
5691 cx,
5692 EditorMode::Full,
5693 &input_text,
5694 px(editor_width),
5695 );
5696
5697 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
5698 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
5699 let mut i = 0;
5700 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
5701 i = actual_index;
5702 match expected_invisibles.get(i) {
5703 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
5704 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
5705 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
5706 _ => {
5707 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
5708 }
5709 },
5710 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
5711 }
5712 }
5713 let missing_expected_invisibles = &expected_invisibles[i + 1..];
5714 assert!(
5715 missing_expected_invisibles.is_empty(),
5716 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
5717 );
5718
5719 editor_width += resize_step;
5720 }
5721 }
5722
5723 fn collect_invisibles_from_new_editor(
5724 cx: &mut TestAppContext,
5725 editor_mode: EditorMode,
5726 input_text: &str,
5727 editor_width: Pixels,
5728 ) -> Vec<Invisible> {
5729 info!(
5730 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
5731 editor_width.0
5732 );
5733 let window = cx.add_window(|cx| {
5734 let buffer = MultiBuffer::build_simple(&input_text, cx);
5735 Editor::new(editor_mode, buffer, None, cx)
5736 });
5737 let cx = &mut VisualTestContext::from_window(*window, cx);
5738 let editor = window.root(cx).unwrap();
5739 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
5740 window
5741 .update(cx, |editor, cx| {
5742 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
5743 editor.set_wrap_width(Some(editor_width), cx);
5744 })
5745 .unwrap();
5746 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
5747 EditorElement::new(&editor, style)
5748 });
5749 state
5750 .position_map
5751 .line_layouts
5752 .iter()
5753 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
5754 .cloned()
5755 .collect()
5756 }
5757}
5758
5759pub fn register_action<T: Action>(
5760 view: &View<Editor>,
5761 cx: &mut WindowContext,
5762 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
5763) {
5764 let view = view.clone();
5765 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
5766 let action = action.downcast_ref().unwrap();
5767 if phase == DispatchPhase::Bubble {
5768 view.update(cx, |editor, cx| {
5769 listener(editor, action, cx);
5770 })
5771 }
5772 })
5773}
5774
5775fn compute_auto_height_layout(
5776 editor: &mut Editor,
5777 max_lines: usize,
5778 max_line_number_width: Pixels,
5779 known_dimensions: Size<Option<Pixels>>,
5780 available_width: AvailableSpace,
5781 cx: &mut ViewContext<Editor>,
5782) -> Option<Size<Pixels>> {
5783 let width = known_dimensions.width.or_else(|| {
5784 if let AvailableSpace::Definite(available_width) = available_width {
5785 Some(available_width)
5786 } else {
5787 None
5788 }
5789 })?;
5790 if let Some(height) = known_dimensions.height {
5791 return Some(size(width, height));
5792 }
5793
5794 let style = editor.style.as_ref().unwrap();
5795 let font_id = cx.text_system().resolve_font(&style.text.font());
5796 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5797 let line_height = style.text.line_height_in_pixels(cx.rem_size());
5798 let em_width = cx
5799 .text_system()
5800 .typographic_bounds(font_id, font_size, 'm')
5801 .unwrap()
5802 .size
5803 .width;
5804
5805 let mut snapshot = editor.snapshot(cx);
5806 let gutter_dimensions =
5807 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
5808
5809 editor.gutter_dimensions = gutter_dimensions;
5810 let text_width = width - gutter_dimensions.width;
5811 let overscroll = size(em_width, px(0.));
5812
5813 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
5814 if editor.set_wrap_width(Some(editor_width), cx) {
5815 snapshot = editor.snapshot(cx);
5816 }
5817
5818 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
5819 let height = scroll_height
5820 .max(line_height)
5821 .min(line_height * max_lines as f32);
5822
5823 Some(size(width, height))
5824}