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