1use crate::{
2 blame_entry_tooltip::{blame_entry_relative_timestamp, BlameEntryTooltip},
3 display_map::{
4 Block, BlockContext, BlockStyle, DisplaySnapshot, HighlightedChunk, ToDisplayPoint,
5 },
6 editor_settings::{
7 CurrentLineHighlight, DoubleClickInMultibuffer, MultiCursorModifier, ScrollBeyondLastLine,
8 ShowScrollbar,
9 },
10 git::{
11 blame::{CommitDetails, GitBlame},
12 diff_hunk_to_display, DisplayDiffHunk,
13 },
14 hover_popover::{
15 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
16 },
17 hunk_diff::ExpandedHunk,
18 hunk_status,
19 items::BufferSearchHighlights,
20 mouse_context_menu::{self, MenuPosition, MouseContextMenu},
21 scroll::scroll_amount::ScrollAmount,
22 BlockId, CodeActionsMenu, CursorShape, CustomBlockId, DisplayPoint, DisplayRow,
23 DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode, EditorSettings,
24 EditorSnapshot, EditorStyle, ExpandExcerpts, FocusedBlock, GutterDimensions, HalfPageDown,
25 HalfPageUp, HoveredCursor, HoveredHunk, LineDown, LineUp, OpenExcerpts, PageDown, PageUp,
26 Point, RangeToAnchorExt, RowExt, RowRangeExt, SelectPhase, Selection, SoftWrap, ToPoint,
27 CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
28};
29use client::ParticipantIndex;
30use collections::{BTreeMap, HashMap};
31use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
32use gpui::Subscription;
33use gpui::{
34 anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
35 transparent_black, Action, AnchorCorner, AnyElement, AvailableSpace, Bounds, ClipboardItem,
36 ContentMask, Corners, CursorStyle, DispatchPhase, Edges, Element, ElementInputHandler, Entity,
37 EntityId, FontId, GlobalElementId, Hitbox, Hsla, InteractiveElement, IntoElement, Length,
38 ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad,
39 ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size,
40 StatefulInteractiveElement, Style, Styled, TextRun, TextStyle, TextStyleRefinement, View,
41 ViewContext, WeakView, WindowContext,
42};
43use itertools::Itertools;
44use language::language_settings::{
45 IndentGuideBackgroundColoring, IndentGuideColoring, IndentGuideSettings, ShowWhitespaceSetting,
46};
47use lsp::DiagnosticSeverity;
48use multi_buffer::{Anchor, MultiBufferPoint, MultiBufferRow};
49use project::{
50 project_settings::{GitGutterSetting, ProjectSettings},
51 ProjectPath,
52};
53use settings::Settings;
54use smallvec::{smallvec, SmallVec};
55use std::{
56 any::TypeId,
57 borrow::Cow,
58 cmp::{self, Ordering},
59 fmt::{self, Write},
60 iter, mem,
61 ops::{Deref, Range},
62 rc::Rc,
63 sync::Arc,
64};
65use sum_tree::Bias;
66use theme::{ActiveTheme, PlayerColor};
67use ui::prelude::*;
68use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
69use util::RangeExt;
70use util::ResultExt;
71use workspace::{item::Item, Workspace};
72
73struct SelectionLayout {
74 head: DisplayPoint,
75 cursor_shape: CursorShape,
76 is_newest: bool,
77 is_local: bool,
78 range: Range<DisplayPoint>,
79 active_rows: Range<DisplayRow>,
80 user_name: Option<SharedString>,
81}
82
83impl SelectionLayout {
84 fn new<T: ToPoint + ToDisplayPoint + Clone>(
85 selection: Selection<T>,
86 line_mode: bool,
87 cursor_shape: CursorShape,
88 map: &DisplaySnapshot,
89 is_newest: bool,
90 is_local: bool,
91 user_name: Option<SharedString>,
92 ) -> Self {
93 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
94 let display_selection = point_selection.map(|p| p.to_display_point(map));
95 let mut range = display_selection.range();
96 let mut head = display_selection.head();
97 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
98 ..map.next_line_boundary(point_selection.end).1.row();
99
100 // vim visual line mode
101 if line_mode {
102 let point_range = map.expand_to_line(point_selection.range());
103 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
104 }
105
106 // any vim visual mode (including line mode)
107 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
108 && !range.is_empty()
109 && !selection.reversed
110 {
111 if head.column() > 0 {
112 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
113 } else if head.row().0 > 0 && head != map.max_point() {
114 head = map.clip_point(
115 DisplayPoint::new(
116 head.row().previous_row(),
117 map.line_len(head.row().previous_row()),
118 ),
119 Bias::Left,
120 );
121 // updating range.end is a no-op unless you're cursor is
122 // on the newline containing a multi-buffer divider
123 // in which case the clip_point may have moved the head up
124 // an additional row.
125 range.end = DisplayPoint::new(head.row().next_row(), 0);
126 active_rows.end = head.row();
127 }
128 }
129
130 Self {
131 head,
132 cursor_shape,
133 is_newest,
134 is_local,
135 range,
136 active_rows,
137 user_name,
138 }
139 }
140}
141
142pub struct EditorElement {
143 editor: View<Editor>,
144 style: EditorStyle,
145}
146
147type DisplayRowDelta = u32;
148
149impl EditorElement {
150 pub(crate) const SCROLLBAR_WIDTH: Pixels = px(13.);
151
152 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
153 Self {
154 editor: editor.clone(),
155 style,
156 }
157 }
158
159 fn register_actions(&self, cx: &mut WindowContext) {
160 let view = &self.editor;
161 view.update(cx, |editor, cx| {
162 for action in editor.editor_actions.borrow().values() {
163 (action)(cx)
164 }
165 });
166
167 crate::rust_analyzer_ext::apply_related_actions(view, cx);
168 register_action(view, cx, Editor::move_left);
169 register_action(view, cx, Editor::move_right);
170 register_action(view, cx, Editor::move_down);
171 register_action(view, cx, Editor::move_down_by_lines);
172 register_action(view, cx, Editor::select_down_by_lines);
173 register_action(view, cx, Editor::move_up);
174 register_action(view, cx, Editor::move_up_by_lines);
175 register_action(view, cx, Editor::select_up_by_lines);
176 register_action(view, cx, Editor::select_page_down);
177 register_action(view, cx, Editor::select_page_up);
178 register_action(view, cx, Editor::cancel);
179 register_action(view, cx, Editor::newline);
180 register_action(view, cx, Editor::newline_above);
181 register_action(view, cx, Editor::newline_below);
182 register_action(view, cx, Editor::backspace);
183 register_action(view, cx, Editor::delete);
184 register_action(view, cx, Editor::tab);
185 register_action(view, cx, Editor::tab_prev);
186 register_action(view, cx, Editor::indent);
187 register_action(view, cx, Editor::outdent);
188 register_action(view, cx, Editor::delete_line);
189 register_action(view, cx, Editor::join_lines);
190 register_action(view, cx, Editor::sort_lines_case_sensitive);
191 register_action(view, cx, Editor::sort_lines_case_insensitive);
192 register_action(view, cx, Editor::reverse_lines);
193 register_action(view, cx, Editor::shuffle_lines);
194 register_action(view, cx, Editor::convert_to_upper_case);
195 register_action(view, cx, Editor::convert_to_lower_case);
196 register_action(view, cx, Editor::convert_to_title_case);
197 register_action(view, cx, Editor::convert_to_snake_case);
198 register_action(view, cx, Editor::convert_to_kebab_case);
199 register_action(view, cx, Editor::convert_to_upper_camel_case);
200 register_action(view, cx, Editor::convert_to_lower_camel_case);
201 register_action(view, cx, Editor::convert_to_opposite_case);
202 register_action(view, cx, Editor::delete_to_previous_word_start);
203 register_action(view, cx, Editor::delete_to_previous_subword_start);
204 register_action(view, cx, Editor::delete_to_next_word_end);
205 register_action(view, cx, Editor::delete_to_next_subword_end);
206 register_action(view, cx, Editor::delete_to_beginning_of_line);
207 register_action(view, cx, Editor::delete_to_end_of_line);
208 register_action(view, cx, Editor::cut_to_end_of_line);
209 register_action(view, cx, Editor::duplicate_line_up);
210 register_action(view, cx, Editor::duplicate_line_down);
211 register_action(view, cx, Editor::move_line_up);
212 register_action(view, cx, Editor::move_line_down);
213 register_action(view, cx, Editor::transpose);
214 register_action(view, cx, Editor::cut);
215 register_action(view, cx, Editor::copy);
216 register_action(view, cx, Editor::paste);
217 register_action(view, cx, Editor::undo);
218 register_action(view, cx, Editor::redo);
219 register_action(view, cx, Editor::move_page_up);
220 register_action(view, cx, Editor::move_page_down);
221 register_action(view, cx, Editor::next_screen);
222 register_action(view, cx, Editor::scroll_cursor_top);
223 register_action(view, cx, Editor::scroll_cursor_center);
224 register_action(view, cx, Editor::scroll_cursor_bottom);
225 register_action(view, cx, |editor, _: &LineDown, cx| {
226 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
227 });
228 register_action(view, cx, |editor, _: &LineUp, cx| {
229 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
230 });
231 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
232 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
233 });
234 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
235 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
236 });
237 register_action(view, cx, |editor, _: &PageDown, cx| {
238 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
239 });
240 register_action(view, cx, |editor, _: &PageUp, cx| {
241 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
242 });
243 register_action(view, cx, Editor::move_to_previous_word_start);
244 register_action(view, cx, Editor::move_to_previous_subword_start);
245 register_action(view, cx, Editor::move_to_next_word_end);
246 register_action(view, cx, Editor::move_to_next_subword_end);
247 register_action(view, cx, Editor::move_to_beginning_of_line);
248 register_action(view, cx, Editor::move_to_end_of_line);
249 register_action(view, cx, Editor::move_to_start_of_paragraph);
250 register_action(view, cx, Editor::move_to_end_of_paragraph);
251 register_action(view, cx, Editor::move_to_beginning);
252 register_action(view, cx, Editor::move_to_end);
253 register_action(view, cx, Editor::select_up);
254 register_action(view, cx, Editor::select_down);
255 register_action(view, cx, Editor::select_left);
256 register_action(view, cx, Editor::select_right);
257 register_action(view, cx, Editor::select_to_previous_word_start);
258 register_action(view, cx, Editor::select_to_previous_subword_start);
259 register_action(view, cx, Editor::select_to_next_word_end);
260 register_action(view, cx, Editor::select_to_next_subword_end);
261 register_action(view, cx, Editor::select_to_beginning_of_line);
262 register_action(view, cx, Editor::select_to_end_of_line);
263 register_action(view, cx, Editor::select_to_start_of_paragraph);
264 register_action(view, cx, Editor::select_to_end_of_paragraph);
265 register_action(view, cx, Editor::select_to_beginning);
266 register_action(view, cx, Editor::select_to_end);
267 register_action(view, cx, Editor::select_all);
268 register_action(view, cx, |editor, action, cx| {
269 editor.select_all_matches(action, cx).log_err();
270 });
271 register_action(view, cx, Editor::select_line);
272 register_action(view, cx, Editor::split_selection_into_lines);
273 register_action(view, cx, Editor::add_selection_above);
274 register_action(view, cx, Editor::add_selection_below);
275 register_action(view, cx, |editor, action, cx| {
276 editor.select_next(action, cx).log_err();
277 });
278 register_action(view, cx, |editor, action, cx| {
279 editor.select_previous(action, cx).log_err();
280 });
281 register_action(view, cx, Editor::toggle_comments);
282 register_action(view, cx, Editor::select_larger_syntax_node);
283 register_action(view, cx, Editor::select_smaller_syntax_node);
284 register_action(view, cx, Editor::select_enclosing_symbol);
285 register_action(view, cx, Editor::move_to_enclosing_bracket);
286 register_action(view, cx, Editor::undo_selection);
287 register_action(view, cx, Editor::redo_selection);
288 if !view.read(cx).is_singleton(cx) {
289 register_action(view, cx, Editor::expand_excerpts);
290 register_action(view, cx, Editor::expand_excerpts_up);
291 register_action(view, cx, Editor::expand_excerpts_down);
292 }
293 register_action(view, cx, Editor::go_to_diagnostic);
294 register_action(view, cx, Editor::go_to_prev_diagnostic);
295 register_action(view, cx, Editor::go_to_hunk);
296 register_action(view, cx, Editor::go_to_prev_hunk);
297 register_action(view, cx, |editor, a, cx| {
298 editor.go_to_definition(a, cx).detach_and_log_err(cx);
299 });
300 register_action(view, cx, |editor, a, cx| {
301 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
302 });
303 register_action(view, cx, |editor, a, cx| {
304 editor.go_to_declaration(a, cx).detach_and_log_err(cx);
305 });
306 register_action(view, cx, |editor, a, cx| {
307 editor.go_to_declaration_split(a, cx).detach_and_log_err(cx);
308 });
309 register_action(view, cx, |editor, a, cx| {
310 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
311 });
312 register_action(view, cx, |editor, a, cx| {
313 editor
314 .go_to_implementation_split(a, cx)
315 .detach_and_log_err(cx);
316 });
317 register_action(view, cx, |editor, a, cx| {
318 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
319 });
320 register_action(view, cx, |editor, a, cx| {
321 editor
322 .go_to_type_definition_split(a, cx)
323 .detach_and_log_err(cx);
324 });
325 register_action(view, cx, Editor::open_url);
326 register_action(view, cx, Editor::fold);
327 register_action(view, cx, Editor::fold_at);
328 register_action(view, cx, Editor::unfold_lines);
329 register_action(view, cx, Editor::unfold_at);
330 register_action(view, cx, Editor::fold_selected_ranges);
331 register_action(view, cx, Editor::show_completions);
332 register_action(view, cx, Editor::toggle_code_actions);
333 register_action(view, cx, Editor::open_excerpts);
334 register_action(view, cx, Editor::open_excerpts_in_split);
335 register_action(view, cx, Editor::toggle_soft_wrap);
336 register_action(view, cx, Editor::toggle_tab_bar);
337 register_action(view, cx, Editor::toggle_line_numbers);
338 register_action(view, cx, Editor::toggle_indent_guides);
339 register_action(view, cx, Editor::toggle_inlay_hints);
340 register_action(view, cx, hover_popover::hover);
341 register_action(view, cx, Editor::reveal_in_finder);
342 register_action(view, cx, Editor::copy_path);
343 register_action(view, cx, Editor::copy_relative_path);
344 register_action(view, cx, Editor::copy_highlight_json);
345 register_action(view, cx, Editor::copy_permalink_to_line);
346 register_action(view, cx, Editor::open_permalink_to_line);
347 register_action(view, cx, Editor::toggle_git_blame);
348 register_action(view, cx, Editor::toggle_git_blame_inline);
349 register_action(view, cx, Editor::toggle_hunk_diff);
350 register_action(view, cx, Editor::expand_all_hunk_diffs);
351 register_action(view, cx, |editor, action, cx| {
352 if let Some(task) = editor.format(action, cx) {
353 task.detach_and_log_err(cx);
354 } else {
355 cx.propagate();
356 }
357 });
358 register_action(view, cx, Editor::restart_language_server);
359 register_action(view, cx, Editor::cancel_language_server_work);
360 register_action(view, cx, Editor::show_character_palette);
361 register_action(view, cx, |editor, action, cx| {
362 if let Some(task) = editor.confirm_completion(action, cx) {
363 task.detach_and_log_err(cx);
364 } else {
365 cx.propagate();
366 }
367 });
368 register_action(view, cx, |editor, action, cx| {
369 if let Some(task) = editor.confirm_code_action(action, cx) {
370 task.detach_and_log_err(cx);
371 } else {
372 cx.propagate();
373 }
374 });
375 register_action(view, cx, |editor, action, cx| {
376 if let Some(task) = editor.rename(action, cx) {
377 task.detach_and_log_err(cx);
378 } else {
379 cx.propagate();
380 }
381 });
382 register_action(view, cx, |editor, action, cx| {
383 if let Some(task) = editor.confirm_rename(action, cx) {
384 task.detach_and_log_err(cx);
385 } else {
386 cx.propagate();
387 }
388 });
389 register_action(view, cx, |editor, action, cx| {
390 if let Some(task) = editor.find_all_references(action, cx) {
391 task.detach_and_log_err(cx);
392 } else {
393 cx.propagate();
394 }
395 });
396 register_action(view, cx, Editor::show_signature_help);
397 register_action(view, cx, Editor::next_inline_completion);
398 register_action(view, cx, Editor::previous_inline_completion);
399 register_action(view, cx, Editor::show_inline_completion);
400 register_action(view, cx, Editor::context_menu_first);
401 register_action(view, cx, Editor::context_menu_prev);
402 register_action(view, cx, Editor::context_menu_next);
403 register_action(view, cx, Editor::context_menu_last);
404 register_action(view, cx, Editor::display_cursor_names);
405 register_action(view, cx, Editor::unique_lines_case_insensitive);
406 register_action(view, cx, Editor::unique_lines_case_sensitive);
407 register_action(view, cx, Editor::accept_partial_inline_completion);
408 register_action(view, cx, Editor::accept_inline_completion);
409 register_action(view, cx, Editor::revert_selected_hunks);
410 register_action(view, cx, Editor::open_active_item_in_terminal)
411 }
412
413 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
414 let position_map = layout.position_map.clone();
415 cx.on_key_event({
416 let editor = self.editor.clone();
417 let text_hitbox = layout.text_hitbox.clone();
418 move |event: &ModifiersChangedEvent, phase, cx| {
419 if phase != DispatchPhase::Bubble {
420 return;
421 }
422 editor.update(cx, |editor, cx| {
423 if editor.hover_state.focused(cx) {
424 return;
425 }
426 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
427 })
428 }
429 });
430 }
431
432 fn modifiers_changed(
433 editor: &mut Editor,
434 event: &ModifiersChangedEvent,
435 position_map: &PositionMap,
436 text_hitbox: &Hitbox,
437 cx: &mut ViewContext<Editor>,
438 ) {
439 let mouse_position = cx.mouse_position();
440 if !text_hitbox.is_hovered(cx) {
441 return;
442 }
443
444 editor.update_hovered_link(
445 position_map.point_for_position(text_hitbox.bounds, mouse_position),
446 &position_map.snapshot,
447 event.modifiers,
448 cx,
449 )
450 }
451
452 fn mouse_left_down(
453 editor: &mut Editor,
454 event: &MouseDownEvent,
455 hovered_hunk: Option<HoveredHunk>,
456 position_map: &PositionMap,
457 text_hitbox: &Hitbox,
458 gutter_hitbox: &Hitbox,
459 cx: &mut ViewContext<Editor>,
460 ) {
461 if cx.default_prevented() {
462 return;
463 }
464
465 let mut click_count = event.click_count;
466 let mut modifiers = event.modifiers;
467
468 if let Some(hovered_hunk) = hovered_hunk {
469 if modifiers.control || modifiers.platform {
470 editor.toggle_hovered_hunk(&hovered_hunk, cx);
471 } else {
472 let display_range = hovered_hunk
473 .multi_buffer_range
474 .clone()
475 .to_display_points(&position_map.snapshot);
476 let hunk_bounds = Self::diff_hunk_bounds(
477 &position_map.snapshot,
478 position_map.line_height,
479 gutter_hitbox.bounds,
480 &DisplayDiffHunk::Unfolded {
481 diff_base_byte_range: hovered_hunk.diff_base_byte_range.clone(),
482 display_row_range: display_range.start.row()..display_range.end.row(),
483 multi_buffer_range: hovered_hunk.multi_buffer_range.clone(),
484 status: hovered_hunk.status,
485 },
486 );
487 if hunk_bounds.contains(&event.position) {
488 editor.open_hunk_context_menu(hovered_hunk, event.position, cx);
489 }
490 }
491 cx.notify();
492 return;
493 } else if gutter_hitbox.is_hovered(cx) {
494 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
495 } else if !text_hitbox.is_hovered(cx) {
496 return;
497 }
498
499 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
500 match EditorSettings::get_global(cx).double_click_in_multibuffer {
501 DoubleClickInMultibuffer::Select => {
502 // do nothing special on double click, all selection logic is below
503 }
504 DoubleClickInMultibuffer::Open => {
505 if modifiers.alt {
506 // if double click is made with alt, pretend it's a regular double click without opening and alt,
507 // and run the selection logic.
508 modifiers.alt = false;
509 } else {
510 // if double click is made without alt, open the corresponding excerp
511 editor.open_excerpts(&OpenExcerpts, cx);
512 return;
513 }
514 }
515 }
516 }
517
518 let point_for_position =
519 position_map.point_for_position(text_hitbox.bounds, event.position);
520 let position = point_for_position.previous_valid;
521 if modifiers.shift && modifiers.alt {
522 editor.select(
523 SelectPhase::BeginColumnar {
524 position,
525 reset: false,
526 goal_column: point_for_position.exact_unclipped.column(),
527 },
528 cx,
529 );
530 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
531 {
532 editor.select(
533 SelectPhase::Extend {
534 position,
535 click_count,
536 },
537 cx,
538 );
539 } else {
540 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
541 let multi_cursor_modifier = match multi_cursor_setting {
542 MultiCursorModifier::Alt => modifiers.alt,
543 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
544 };
545 editor.select(
546 SelectPhase::Begin {
547 position,
548 add: multi_cursor_modifier,
549 click_count,
550 },
551 cx,
552 );
553 }
554
555 cx.stop_propagation();
556 }
557
558 fn mouse_right_down(
559 editor: &mut Editor,
560 event: &MouseDownEvent,
561 position_map: &PositionMap,
562 text_hitbox: &Hitbox,
563 cx: &mut ViewContext<Editor>,
564 ) {
565 if !text_hitbox.is_hovered(cx) {
566 return;
567 }
568 let point_for_position =
569 position_map.point_for_position(text_hitbox.bounds, event.position);
570 mouse_context_menu::deploy_context_menu(
571 editor,
572 event.position,
573 point_for_position.previous_valid,
574 cx,
575 );
576 cx.stop_propagation();
577 }
578
579 fn mouse_middle_down(
580 editor: &mut Editor,
581 event: &MouseDownEvent,
582 position_map: &PositionMap,
583 text_hitbox: &Hitbox,
584 cx: &mut ViewContext<Editor>,
585 ) {
586 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
587 return;
588 }
589
590 let point_for_position =
591 position_map.point_for_position(text_hitbox.bounds, event.position);
592 let position = point_for_position.previous_valid;
593
594 editor.select(
595 SelectPhase::BeginColumnar {
596 position,
597 reset: true,
598 goal_column: point_for_position.exact_unclipped.column(),
599 },
600 cx,
601 );
602 }
603
604 fn mouse_up(
605 editor: &mut Editor,
606 event: &MouseUpEvent,
607 position_map: &PositionMap,
608 text_hitbox: &Hitbox,
609 cx: &mut ViewContext<Editor>,
610 ) {
611 let end_selection = editor.has_pending_selection();
612 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
613
614 if end_selection {
615 editor.select(SelectPhase::End, cx);
616 }
617
618 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
619 let multi_cursor_modifier = match multi_cursor_setting {
620 MultiCursorModifier::Alt => event.modifiers.secondary(),
621 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
622 };
623
624 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
625 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
626 editor.handle_click_hovered_link(point, event.modifiers, cx);
627
628 cx.stop_propagation();
629 } else if end_selection && pending_nonempty_selections {
630 cx.stop_propagation();
631 } else if cfg!(target_os = "linux") && event.button == MouseButton::Middle {
632 if !text_hitbox.is_hovered(cx) || editor.read_only(cx) {
633 return;
634 }
635
636 #[cfg(target_os = "linux")]
637 if let Some(item) = cx.read_from_primary() {
638 let point_for_position =
639 position_map.point_for_position(text_hitbox.bounds, event.position);
640 let position = point_for_position.previous_valid;
641
642 editor.select(
643 SelectPhase::Begin {
644 position,
645 add: false,
646 click_count: 1,
647 },
648 cx,
649 );
650 editor.insert(item.text(), cx);
651 }
652 cx.stop_propagation()
653 }
654 }
655
656 fn mouse_dragged(
657 editor: &mut Editor,
658 event: &MouseMoveEvent,
659 position_map: &PositionMap,
660 text_bounds: Bounds<Pixels>,
661 cx: &mut ViewContext<Editor>,
662 ) {
663 if !editor.has_pending_selection() {
664 return;
665 }
666
667 let point_for_position = position_map.point_for_position(text_bounds, event.position);
668 let mut scroll_delta = gpui::Point::<f32>::default();
669 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
670 let top = text_bounds.origin.y + vertical_margin;
671 let bottom = text_bounds.lower_left().y - vertical_margin;
672 if event.position.y < top {
673 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
674 }
675 if event.position.y > bottom {
676 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
677 }
678
679 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
680 let left = text_bounds.origin.x + horizontal_margin;
681 let right = text_bounds.upper_right().x - horizontal_margin;
682 if event.position.x < left {
683 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
684 }
685 if event.position.x > right {
686 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
687 }
688
689 editor.select(
690 SelectPhase::Update {
691 position: point_for_position.previous_valid,
692 goal_column: point_for_position.exact_unclipped.column(),
693 scroll_delta,
694 },
695 cx,
696 );
697 }
698
699 fn mouse_moved(
700 editor: &mut Editor,
701 event: &MouseMoveEvent,
702 position_map: &PositionMap,
703 text_hitbox: &Hitbox,
704 gutter_hitbox: &Hitbox,
705 cx: &mut ViewContext<Editor>,
706 ) {
707 let modifiers = event.modifiers;
708 let gutter_hovered = gutter_hitbox.is_hovered(cx);
709 editor.set_gutter_hovered(gutter_hovered, cx);
710
711 // Don't trigger hover popover if mouse is hovering over context menu
712 if text_hitbox.is_hovered(cx) {
713 let point_for_position =
714 position_map.point_for_position(text_hitbox.bounds, event.position);
715
716 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
717
718 if let Some(point) = point_for_position.as_valid() {
719 let anchor = position_map
720 .snapshot
721 .buffer_snapshot
722 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
723 hover_at(editor, Some(anchor), cx);
724 Self::update_visible_cursor(editor, point, position_map, cx);
725 } else {
726 hover_at(editor, None, cx);
727 }
728 } else {
729 editor.hide_hovered_link(cx);
730 hover_at(editor, None, cx);
731 if gutter_hovered {
732 cx.stop_propagation();
733 }
734 }
735 }
736
737 fn update_visible_cursor(
738 editor: &mut Editor,
739 point: DisplayPoint,
740 position_map: &PositionMap,
741 cx: &mut ViewContext<Editor>,
742 ) {
743 let snapshot = &position_map.snapshot;
744 let Some(hub) = editor.collaboration_hub() else {
745 return;
746 };
747 let start = snapshot.display_snapshot.clip_point(
748 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
749 Bias::Left,
750 );
751 let end = snapshot.display_snapshot.clip_point(
752 DisplayPoint::new(
753 point.row(),
754 (point.column() + 1).min(snapshot.line_len(point.row())),
755 ),
756 Bias::Right,
757 );
758
759 let range = snapshot
760 .buffer_snapshot
761 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
762 ..snapshot
763 .buffer_snapshot
764 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
765
766 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
767 return;
768 };
769 let key = crate::HoveredCursor {
770 replica_id: selection.replica_id,
771 selection_id: selection.selection.id,
772 };
773 editor.hovered_cursors.insert(
774 key.clone(),
775 cx.spawn(|editor, mut cx| async move {
776 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
777 editor
778 .update(&mut cx, |editor, cx| {
779 editor.hovered_cursors.remove(&key);
780 cx.notify();
781 })
782 .ok();
783 }),
784 );
785 cx.notify()
786 }
787
788 fn layout_selections(
789 &self,
790 start_anchor: Anchor,
791 end_anchor: Anchor,
792 snapshot: &EditorSnapshot,
793 start_row: DisplayRow,
794 end_row: DisplayRow,
795 cx: &mut WindowContext,
796 ) -> (
797 Vec<(PlayerColor, Vec<SelectionLayout>)>,
798 BTreeMap<DisplayRow, bool>,
799 Option<DisplayPoint>,
800 ) {
801 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
802 let mut active_rows = BTreeMap::new();
803 let mut newest_selection_head = None;
804 let editor = self.editor.read(cx);
805
806 if editor.show_local_selections {
807 let mut local_selections: Vec<Selection<Point>> = editor
808 .selections
809 .disjoint_in_range(start_anchor..end_anchor, cx);
810 local_selections.extend(editor.selections.pending(cx));
811 let mut layouts = Vec::new();
812 let newest = editor.selections.newest(cx);
813 for selection in local_selections.drain(..) {
814 let is_empty = selection.start == selection.end;
815 let is_newest = selection == newest;
816
817 let layout = SelectionLayout::new(
818 selection,
819 editor.selections.line_mode,
820 editor.cursor_shape,
821 &snapshot.display_snapshot,
822 is_newest,
823 editor.leader_peer_id.is_none(),
824 None,
825 );
826 if is_newest {
827 newest_selection_head = Some(layout.head);
828 }
829
830 for row in cmp::max(layout.active_rows.start.0, start_row.0)
831 ..=cmp::min(layout.active_rows.end.0, end_row.0)
832 {
833 let contains_non_empty_selection =
834 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
835 *contains_non_empty_selection |= !is_empty;
836 }
837 layouts.push(layout);
838 }
839
840 let player = if editor.read_only(cx) {
841 cx.theme().players().read_only()
842 } else {
843 self.style.local_player
844 };
845
846 selections.push((player, layouts));
847 }
848
849 if let Some(collaboration_hub) = &editor.collaboration_hub {
850 // When following someone, render the local selections in their color.
851 if let Some(leader_id) = editor.leader_peer_id {
852 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
853 if let Some(participant_index) = collaboration_hub
854 .user_participant_indices(cx)
855 .get(&collaborator.user_id)
856 {
857 if let Some((local_selection_style, _)) = selections.first_mut() {
858 *local_selection_style = cx
859 .theme()
860 .players()
861 .color_for_participant(participant_index.0);
862 }
863 }
864 }
865 }
866
867 let mut remote_selections = HashMap::default();
868 for selection in snapshot.remote_selections_in_range(
869 &(start_anchor..end_anchor),
870 collaboration_hub.as_ref(),
871 cx,
872 ) {
873 let selection_style = Self::get_participant_color(selection.participant_index, cx);
874
875 // Don't re-render the leader's selections, since the local selections
876 // match theirs.
877 if Some(selection.peer_id) == editor.leader_peer_id {
878 continue;
879 }
880 let key = HoveredCursor {
881 replica_id: selection.replica_id,
882 selection_id: selection.selection.id,
883 };
884
885 let is_shown =
886 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
887
888 remote_selections
889 .entry(selection.replica_id)
890 .or_insert((selection_style, Vec::new()))
891 .1
892 .push(SelectionLayout::new(
893 selection.selection,
894 selection.line_mode,
895 selection.cursor_shape,
896 &snapshot.display_snapshot,
897 false,
898 false,
899 if is_shown { selection.user_name } else { None },
900 ));
901 }
902
903 selections.extend(remote_selections.into_values());
904 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
905 let player = if editor.read_only(cx) {
906 cx.theme().players().read_only()
907 } else {
908 self.style.local_player
909 };
910 let layouts = snapshot
911 .buffer_snapshot
912 .selections_in_range(&(start_anchor..end_anchor), true)
913 .map(move |(_, line_mode, cursor_shape, selection)| {
914 SelectionLayout::new(
915 selection,
916 line_mode,
917 cursor_shape,
918 &snapshot.display_snapshot,
919 false,
920 false,
921 None,
922 )
923 })
924 .collect::<Vec<_>>();
925 selections.push((player, layouts));
926 }
927 (selections, active_rows, newest_selection_head)
928 }
929
930 fn collect_cursors(
931 &self,
932 snapshot: &EditorSnapshot,
933 cx: &mut WindowContext,
934 ) -> Vec<(DisplayPoint, Hsla)> {
935 let editor = self.editor.read(cx);
936 let mut cursors = Vec::new();
937 let mut skip_local = false;
938 let mut add_cursor = |anchor: Anchor, color| {
939 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
940 };
941 // Remote cursors
942 if let Some(collaboration_hub) = &editor.collaboration_hub {
943 for remote_selection in snapshot.remote_selections_in_range(
944 &(Anchor::min()..Anchor::max()),
945 collaboration_hub.deref(),
946 cx,
947 ) {
948 let color = Self::get_participant_color(remote_selection.participant_index, cx);
949 add_cursor(remote_selection.selection.head(), color.cursor);
950 if Some(remote_selection.peer_id) == editor.leader_peer_id {
951 skip_local = true;
952 }
953 }
954 }
955 // Local cursors
956 if !skip_local {
957 let color = cx.theme().players().local().cursor;
958 editor.selections.disjoint.iter().for_each(|selection| {
959 add_cursor(selection.head(), color);
960 });
961 if let Some(ref selection) = editor.selections.pending_anchor() {
962 add_cursor(selection.head(), color);
963 }
964 }
965 cursors
966 }
967
968 #[allow(clippy::too_many_arguments)]
969 fn layout_visible_cursors(
970 &self,
971 snapshot: &EditorSnapshot,
972 selections: &[(PlayerColor, Vec<SelectionLayout>)],
973 visible_display_row_range: Range<DisplayRow>,
974 line_layouts: &[LineWithInvisibles],
975 text_hitbox: &Hitbox,
976 content_origin: gpui::Point<Pixels>,
977 scroll_position: gpui::Point<f32>,
978 scroll_pixel_position: gpui::Point<Pixels>,
979 line_height: Pixels,
980 em_width: Pixels,
981 autoscroll_containing_element: bool,
982 cx: &mut WindowContext,
983 ) -> Vec<CursorLayout> {
984 let mut autoscroll_bounds = None;
985 let cursor_layouts = self.editor.update(cx, |editor, cx| {
986 let mut cursors = Vec::new();
987 for (player_color, selections) in selections {
988 for selection in selections {
989 let cursor_position = selection.head;
990
991 let in_range = visible_display_row_range.contains(&cursor_position.row());
992 if (selection.is_local && !editor.show_local_cursors(cx)) || !in_range {
993 continue;
994 }
995
996 let cursor_row_layout = &line_layouts
997 [cursor_position.row().minus(visible_display_row_range.start) as usize];
998 let cursor_column = cursor_position.column() as usize;
999
1000 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1001 let mut block_width =
1002 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1003 if block_width == Pixels::ZERO {
1004 block_width = em_width;
1005 }
1006 let block_text = if let CursorShape::Block = selection.cursor_shape {
1007 snapshot.display_chars_at(cursor_position).next().and_then(
1008 |(character, _)| {
1009 let text = if character == '\n' {
1010 SharedString::from(" ")
1011 } else {
1012 SharedString::from(character.to_string())
1013 };
1014 let len = text.len();
1015
1016 let font = cursor_row_layout
1017 .font_id_for_index(cursor_column)
1018 .and_then(|cursor_font_id| {
1019 cx.text_system().get_font_for_id(cursor_font_id)
1020 })
1021 .unwrap_or(self.style.text.font());
1022
1023 cx.text_system()
1024 .shape_line(
1025 text,
1026 cursor_row_layout.font_size,
1027 &[TextRun {
1028 len,
1029 font,
1030 color: self.style.background,
1031 background_color: None,
1032 strikethrough: None,
1033 underline: None,
1034 }],
1035 )
1036 .log_err()
1037 },
1038 )
1039 } else {
1040 None
1041 };
1042
1043 let x = cursor_character_x - scroll_pixel_position.x;
1044 let y = (cursor_position.row().as_f32()
1045 - scroll_pixel_position.y / line_height)
1046 * line_height;
1047 if selection.is_newest {
1048 editor.pixel_position_of_newest_cursor = Some(point(
1049 text_hitbox.origin.x + x + block_width / 2.,
1050 text_hitbox.origin.y + y + line_height / 2.,
1051 ));
1052
1053 if autoscroll_containing_element {
1054 let top = text_hitbox.origin.y
1055 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1056 * line_height;
1057 let left = text_hitbox.origin.x
1058 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1059 .max(0.)
1060 * em_width;
1061
1062 let bottom = text_hitbox.origin.y
1063 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1064 * line_height;
1065 let right = text_hitbox.origin.x
1066 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1067 * em_width;
1068
1069 autoscroll_bounds =
1070 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1071 }
1072 }
1073
1074 let mut cursor = CursorLayout {
1075 color: player_color.cursor,
1076 block_width,
1077 origin: point(x, y),
1078 line_height,
1079 shape: selection.cursor_shape,
1080 block_text,
1081 cursor_name: None,
1082 };
1083 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1084 string: name,
1085 color: self.style.background,
1086 is_top_row: cursor_position.row().0 == 0,
1087 });
1088 cursor.layout(content_origin, cursor_name, cx);
1089 cursors.push(cursor);
1090 }
1091 }
1092 cursors
1093 });
1094
1095 if let Some(bounds) = autoscroll_bounds {
1096 cx.request_autoscroll(bounds);
1097 }
1098
1099 cursor_layouts
1100 }
1101
1102 fn layout_scrollbar(
1103 &self,
1104 snapshot: &EditorSnapshot,
1105 bounds: Bounds<Pixels>,
1106 scroll_position: gpui::Point<f32>,
1107 rows_per_page: f32,
1108 non_visible_cursors: bool,
1109 cx: &mut WindowContext,
1110 ) -> Option<ScrollbarLayout> {
1111 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1112 let show_scrollbars = match scrollbar_settings.show {
1113 ShowScrollbar::Auto => {
1114 let editor = self.editor.read(cx);
1115 let is_singleton = editor.is_singleton(cx);
1116 // Git
1117 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1118 ||
1119 // Buffer Search Results
1120 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1121 ||
1122 // Selected Symbol Occurrences
1123 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1124 ||
1125 // Diagnostics
1126 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
1127 ||
1128 // Cursors out of sight
1129 non_visible_cursors
1130 ||
1131 // Scrollmanager
1132 editor.scroll_manager.scrollbars_visible()
1133 }
1134 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1135 ShowScrollbar::Always => true,
1136 ShowScrollbar::Never => false,
1137 };
1138 if snapshot.mode != EditorMode::Full {
1139 return None;
1140 }
1141
1142 let visible_row_range = scroll_position.y..scroll_position.y + rows_per_page;
1143
1144 // If a drag took place after we started dragging the scrollbar,
1145 // cancel the scrollbar drag.
1146 if cx.has_active_drag() {
1147 self.editor.update(cx, |editor, cx| {
1148 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1149 });
1150 }
1151
1152 let track_bounds = Bounds::from_corners(
1153 point(self.scrollbar_left(&bounds), bounds.origin.y),
1154 point(bounds.lower_right().x, bounds.lower_left().y),
1155 );
1156
1157 let settings = EditorSettings::get_global(cx);
1158 let scroll_beyond_last_line: f32 = match settings.scroll_beyond_last_line {
1159 ScrollBeyondLastLine::OnePage => rows_per_page,
1160 ScrollBeyondLastLine::Off => 1.0,
1161 ScrollBeyondLastLine::VerticalScrollMargin => 1.0 + settings.vertical_scroll_margin,
1162 };
1163 let total_rows =
1164 (snapshot.max_point().row().as_f32() + scroll_beyond_last_line).max(rows_per_page);
1165 let height = bounds.size.height;
1166 let px_per_row = height / total_rows;
1167 let thumb_height = (rows_per_page * px_per_row).max(ScrollbarLayout::MIN_THUMB_HEIGHT);
1168 let row_height = (height - thumb_height) / (total_rows - rows_per_page).max(0.);
1169
1170 Some(ScrollbarLayout {
1171 hitbox: cx.insert_hitbox(track_bounds, false),
1172 visible_row_range,
1173 row_height,
1174 visible: show_scrollbars,
1175 thumb_height,
1176 })
1177 }
1178
1179 #[allow(clippy::too_many_arguments)]
1180 fn prepaint_gutter_fold_toggles(
1181 &self,
1182 toggles: &mut [Option<AnyElement>],
1183 line_height: Pixels,
1184 gutter_dimensions: &GutterDimensions,
1185 gutter_settings: crate::editor_settings::Gutter,
1186 scroll_pixel_position: gpui::Point<Pixels>,
1187 gutter_hitbox: &Hitbox,
1188 cx: &mut WindowContext,
1189 ) {
1190 for (ix, fold_indicator) in toggles.iter_mut().enumerate() {
1191 if let Some(fold_indicator) = fold_indicator {
1192 debug_assert!(gutter_settings.folds);
1193 let available_space = size(
1194 AvailableSpace::MinContent,
1195 AvailableSpace::Definite(line_height * 0.55),
1196 );
1197 let fold_indicator_size = fold_indicator.layout_as_root(available_space, cx);
1198
1199 let position = point(
1200 gutter_dimensions.width - gutter_dimensions.right_padding,
1201 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1202 );
1203 let centering_offset = point(
1204 (gutter_dimensions.fold_area_width() - fold_indicator_size.width) / 2.,
1205 (line_height - fold_indicator_size.height) / 2.,
1206 );
1207 let origin = gutter_hitbox.origin + position + centering_offset;
1208 fold_indicator.prepaint_as_root(origin, available_space, cx);
1209 }
1210 }
1211 }
1212
1213 #[allow(clippy::too_many_arguments)]
1214 fn prepaint_crease_trailers(
1215 &self,
1216 trailers: Vec<Option<AnyElement>>,
1217 lines: &[LineWithInvisibles],
1218 line_height: Pixels,
1219 content_origin: gpui::Point<Pixels>,
1220 scroll_pixel_position: gpui::Point<Pixels>,
1221 em_width: Pixels,
1222 cx: &mut WindowContext,
1223 ) -> Vec<Option<CreaseTrailerLayout>> {
1224 trailers
1225 .into_iter()
1226 .enumerate()
1227 .map(|(ix, element)| {
1228 let mut element = element?;
1229 let available_space = size(
1230 AvailableSpace::MinContent,
1231 AvailableSpace::Definite(line_height),
1232 );
1233 let size = element.layout_as_root(available_space, cx);
1234
1235 let line = &lines[ix];
1236 let padding = if line.width == Pixels::ZERO {
1237 Pixels::ZERO
1238 } else {
1239 4. * em_width
1240 };
1241 let position = point(
1242 scroll_pixel_position.x + line.width + padding,
1243 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1244 );
1245 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1246 let origin = content_origin + position + centering_offset;
1247 element.prepaint_as_root(origin, available_space, cx);
1248 Some(CreaseTrailerLayout {
1249 element,
1250 bounds: Bounds::new(origin, size),
1251 })
1252 })
1253 .collect()
1254 }
1255
1256 // Folds contained in a hunk are ignored apart from shrinking visual size
1257 // If a fold contains any hunks then that fold line is marked as modified
1258 fn layout_gutter_git_hunks(
1259 &self,
1260 line_height: Pixels,
1261 gutter_hitbox: &Hitbox,
1262 display_rows: Range<DisplayRow>,
1263 snapshot: &EditorSnapshot,
1264 cx: &mut WindowContext,
1265 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1266 let buffer_snapshot = &snapshot.buffer_snapshot;
1267
1268 let buffer_start_row = MultiBufferRow(
1269 DisplayPoint::new(display_rows.start, 0)
1270 .to_point(snapshot)
1271 .row,
1272 );
1273 let buffer_end_row = MultiBufferRow(
1274 DisplayPoint::new(display_rows.end, 0)
1275 .to_point(snapshot)
1276 .row,
1277 );
1278
1279 let git_gutter_setting = ProjectSettings::get_global(cx)
1280 .git
1281 .git_gutter
1282 .unwrap_or_default();
1283 let display_hunks = buffer_snapshot
1284 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1285 .map(|hunk| diff_hunk_to_display(&hunk, snapshot))
1286 .dedup()
1287 .map(|hunk| match git_gutter_setting {
1288 GitGutterSetting::TrackedFiles => {
1289 let hitbox = match hunk {
1290 DisplayDiffHunk::Unfolded { .. } => {
1291 let hunk_bounds = Self::diff_hunk_bounds(
1292 &snapshot,
1293 line_height,
1294 gutter_hitbox.bounds,
1295 &hunk,
1296 );
1297 Some(cx.insert_hitbox(hunk_bounds, true))
1298 }
1299 DisplayDiffHunk::Folded { .. } => None,
1300 };
1301 (hunk, hitbox)
1302 }
1303 GitGutterSetting::Hide => (hunk, None),
1304 })
1305 .collect();
1306 display_hunks
1307 }
1308
1309 #[allow(clippy::too_many_arguments)]
1310 fn layout_inline_blame(
1311 &self,
1312 display_row: DisplayRow,
1313 display_snapshot: &DisplaySnapshot,
1314 line_layout: &LineWithInvisibles,
1315 crease_trailer: Option<&CreaseTrailerLayout>,
1316 em_width: Pixels,
1317 content_origin: gpui::Point<Pixels>,
1318 scroll_pixel_position: gpui::Point<Pixels>,
1319 line_height: Pixels,
1320 cx: &mut WindowContext,
1321 ) -> Option<AnyElement> {
1322 if !self
1323 .editor
1324 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1325 {
1326 return None;
1327 }
1328
1329 let workspace = self
1330 .editor
1331 .read(cx)
1332 .workspace
1333 .as_ref()
1334 .map(|(w, _)| w.clone());
1335
1336 let display_point = DisplayPoint::new(display_row, 0);
1337 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1338
1339 let blame = self.editor.read(cx).blame.clone()?;
1340 let blame_entry = blame
1341 .update(cx, |blame, cx| {
1342 blame.blame_for_rows([Some(buffer_row)], cx).next()
1343 })
1344 .flatten()?;
1345
1346 let mut element =
1347 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1348
1349 let start_y = content_origin.y
1350 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1351
1352 let start_x = {
1353 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1354
1355 let line_end = if let Some(crease_trailer) = crease_trailer {
1356 crease_trailer.bounds.right()
1357 } else {
1358 content_origin.x - scroll_pixel_position.x + line_layout.width
1359 };
1360 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1361
1362 let min_column_in_pixels = ProjectSettings::get_global(cx)
1363 .git
1364 .inline_blame
1365 .and_then(|settings| settings.min_column)
1366 .map(|col| self.column_pixels(col as usize, cx))
1367 .unwrap_or(px(0.));
1368 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1369
1370 cmp::max(padded_line_end, min_start)
1371 };
1372
1373 let absolute_offset = point(start_x, start_y);
1374 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1375
1376 Some(element)
1377 }
1378
1379 #[allow(clippy::too_many_arguments)]
1380 fn layout_blame_entries(
1381 &self,
1382 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1383 em_width: Pixels,
1384 scroll_position: gpui::Point<f32>,
1385 line_height: Pixels,
1386 gutter_hitbox: &Hitbox,
1387 max_width: Option<Pixels>,
1388 cx: &mut WindowContext,
1389 ) -> Option<Vec<AnyElement>> {
1390 if !self
1391 .editor
1392 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1393 {
1394 return None;
1395 }
1396
1397 let blame = self.editor.read(cx).blame.clone()?;
1398 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1399 blame.blame_for_rows(buffer_rows, cx).collect()
1400 });
1401
1402 let width = if let Some(max_width) = max_width {
1403 AvailableSpace::Definite(max_width)
1404 } else {
1405 AvailableSpace::MaxContent
1406 };
1407 let scroll_top = scroll_position.y * line_height;
1408 let start_x = em_width * 1;
1409
1410 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1411
1412 let shaped_lines = blamed_rows
1413 .into_iter()
1414 .enumerate()
1415 .flat_map(|(ix, blame_entry)| {
1416 if let Some(blame_entry) = blame_entry {
1417 let mut element = render_blame_entry(
1418 ix,
1419 &blame,
1420 blame_entry,
1421 &self.style,
1422 &mut last_used_color,
1423 self.editor.clone(),
1424 cx,
1425 );
1426
1427 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1428 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1429
1430 element.prepaint_as_root(
1431 absolute_offset,
1432 size(width, AvailableSpace::MinContent),
1433 cx,
1434 );
1435
1436 Some(element)
1437 } else {
1438 None
1439 }
1440 })
1441 .collect();
1442
1443 Some(shaped_lines)
1444 }
1445
1446 #[allow(clippy::too_many_arguments)]
1447 fn layout_indent_guides(
1448 &self,
1449 content_origin: gpui::Point<Pixels>,
1450 text_origin: gpui::Point<Pixels>,
1451 visible_buffer_range: Range<MultiBufferRow>,
1452 scroll_pixel_position: gpui::Point<Pixels>,
1453 line_height: Pixels,
1454 snapshot: &DisplaySnapshot,
1455 cx: &mut WindowContext,
1456 ) -> Option<Vec<IndentGuideLayout>> {
1457 let indent_guides = self.editor.update(cx, |editor, cx| {
1458 editor.indent_guides(visible_buffer_range, snapshot, cx)
1459 })?;
1460
1461 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1462 editor
1463 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1464 .unwrap_or_default()
1465 });
1466
1467 Some(
1468 indent_guides
1469 .into_iter()
1470 .enumerate()
1471 .filter_map(|(i, indent_guide)| {
1472 let single_indent_width =
1473 self.column_pixels(indent_guide.tab_size as usize, cx);
1474 let total_width = single_indent_width * indent_guide.depth as f32;
1475 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1476 if start_x >= text_origin.x {
1477 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1478 indent_guide.multibuffer_row_range.clone(),
1479 line_height,
1480 snapshot,
1481 );
1482
1483 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1484
1485 Some(IndentGuideLayout {
1486 origin: point(start_x, start_y),
1487 length,
1488 single_indent_width,
1489 depth: indent_guide.depth,
1490 active: active_indent_guide_indices.contains(&i),
1491 settings: indent_guide.settings,
1492 })
1493 } else {
1494 None
1495 }
1496 })
1497 .collect(),
1498 )
1499 }
1500
1501 fn calculate_indent_guide_bounds(
1502 row_range: Range<MultiBufferRow>,
1503 line_height: Pixels,
1504 snapshot: &DisplaySnapshot,
1505 ) -> (gpui::Pixels, gpui::Pixels) {
1506 let start_point = Point::new(row_range.start.0, 0);
1507 let end_point = Point::new(row_range.end.0, 0);
1508
1509 let row_range = start_point.to_display_point(snapshot).row()
1510 ..end_point.to_display_point(snapshot).row();
1511
1512 let mut prev_line = start_point;
1513 prev_line.row = prev_line.row.saturating_sub(1);
1514 let prev_line = prev_line.to_display_point(snapshot).row();
1515
1516 let mut cons_line = end_point;
1517 cons_line.row += 1;
1518 let cons_line = cons_line.to_display_point(snapshot).row();
1519
1520 let mut offset_y = row_range.start.0 as f32 * line_height;
1521 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1522
1523 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1524 if row_range.end == cons_line {
1525 length += line_height;
1526 }
1527
1528 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1529 // we want to extend the indent guide to the start of the block.
1530 let mut block_height = 0;
1531 let mut block_offset = 0;
1532 let mut found_excerpt_header = false;
1533 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1534 if matches!(block, Block::ExcerptHeader { .. }) {
1535 found_excerpt_header = true;
1536 break;
1537 }
1538 block_offset += block.height();
1539 block_height += block.height();
1540 }
1541 if !found_excerpt_header {
1542 offset_y -= block_offset as f32 * line_height;
1543 length += block_height as f32 * line_height;
1544 }
1545
1546 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1547 // we want to ensure that the indent guide stops before the excerpt header.
1548 let mut block_height = 0;
1549 let mut found_excerpt_header = false;
1550 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1551 if matches!(block, Block::ExcerptHeader { .. }) {
1552 found_excerpt_header = true;
1553 }
1554 block_height += block.height();
1555 }
1556 if found_excerpt_header {
1557 length -= block_height as f32 * line_height;
1558 }
1559
1560 (offset_y, length)
1561 }
1562
1563 #[allow(clippy::too_many_arguments)]
1564 fn layout_run_indicators(
1565 &self,
1566 line_height: Pixels,
1567 scroll_pixel_position: gpui::Point<Pixels>,
1568 gutter_dimensions: &GutterDimensions,
1569 gutter_hitbox: &Hitbox,
1570 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1571 snapshot: &EditorSnapshot,
1572 cx: &mut WindowContext,
1573 ) -> Vec<AnyElement> {
1574 self.editor.update(cx, |editor, cx| {
1575 let active_task_indicator_row =
1576 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1577 deployed_from_indicator,
1578 actions,
1579 ..
1580 })) = editor.context_menu.read().as_ref()
1581 {
1582 actions
1583 .tasks
1584 .as_ref()
1585 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1586 .or_else(|| *deployed_from_indicator)
1587 } else {
1588 None
1589 };
1590 editor
1591 .tasks
1592 .iter()
1593 .filter_map(|(_, tasks)| {
1594 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1595 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1596 if snapshot.is_line_folded(multibuffer_row) {
1597 return None;
1598 }
1599 let display_row = multibuffer_point.to_display_point(snapshot).row();
1600 let button = editor.render_run_indicator(
1601 &self.style,
1602 Some(display_row) == active_task_indicator_row,
1603 display_row,
1604 cx,
1605 );
1606
1607 let button = prepaint_gutter_button(
1608 button,
1609 display_row,
1610 line_height,
1611 gutter_dimensions,
1612 scroll_pixel_position,
1613 gutter_hitbox,
1614 rows_with_hunk_bounds,
1615 cx,
1616 );
1617 Some(button)
1618 })
1619 .collect_vec()
1620 })
1621 }
1622
1623 #[allow(clippy::too_many_arguments)]
1624 fn layout_code_actions_indicator(
1625 &self,
1626 line_height: Pixels,
1627 newest_selection_head: DisplayPoint,
1628 scroll_pixel_position: gpui::Point<Pixels>,
1629 gutter_dimensions: &GutterDimensions,
1630 gutter_hitbox: &Hitbox,
1631 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1632 cx: &mut WindowContext,
1633 ) -> Option<AnyElement> {
1634 let mut active = false;
1635 let mut button = None;
1636 let row = newest_selection_head.row();
1637 self.editor.update(cx, |editor, cx| {
1638 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1639 deployed_from_indicator,
1640 ..
1641 })) = editor.context_menu.read().as_ref()
1642 {
1643 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1644 };
1645 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1646 });
1647
1648 let button = prepaint_gutter_button(
1649 button?,
1650 row,
1651 line_height,
1652 gutter_dimensions,
1653 scroll_pixel_position,
1654 gutter_hitbox,
1655 rows_with_hunk_bounds,
1656 cx,
1657 );
1658
1659 Some(button)
1660 }
1661
1662 fn get_participant_color(
1663 participant_index: Option<ParticipantIndex>,
1664 cx: &WindowContext,
1665 ) -> PlayerColor {
1666 if let Some(index) = participant_index {
1667 cx.theme().players().color_for_participant(index.0)
1668 } else {
1669 cx.theme().players().absent()
1670 }
1671 }
1672
1673 fn calculate_relative_line_numbers(
1674 &self,
1675 snapshot: &EditorSnapshot,
1676 rows: &Range<DisplayRow>,
1677 relative_to: Option<DisplayRow>,
1678 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1679 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1680 let Some(relative_to) = relative_to else {
1681 return relative_rows;
1682 };
1683
1684 let start = rows.start.min(relative_to);
1685 let end = rows.end.max(relative_to);
1686
1687 let buffer_rows = snapshot
1688 .buffer_rows(start)
1689 .take(1 + end.minus(start) as usize)
1690 .collect::<Vec<_>>();
1691
1692 let head_idx = relative_to.minus(start);
1693 let mut delta = 1;
1694 let mut i = head_idx + 1;
1695 while i < buffer_rows.len() as u32 {
1696 if buffer_rows[i as usize].is_some() {
1697 if rows.contains(&DisplayRow(i + start.0)) {
1698 relative_rows.insert(DisplayRow(i + start.0), delta);
1699 }
1700 delta += 1;
1701 }
1702 i += 1;
1703 }
1704 delta = 1;
1705 i = head_idx.min(buffer_rows.len() as u32 - 1);
1706 while i > 0 && buffer_rows[i as usize].is_none() {
1707 i -= 1;
1708 }
1709
1710 while i > 0 {
1711 i -= 1;
1712 if buffer_rows[i as usize].is_some() {
1713 if rows.contains(&DisplayRow(i + start.0)) {
1714 relative_rows.insert(DisplayRow(i + start.0), delta);
1715 }
1716 delta += 1;
1717 }
1718 }
1719
1720 relative_rows
1721 }
1722
1723 fn layout_line_numbers(
1724 &self,
1725 rows: Range<DisplayRow>,
1726 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1727 active_rows: &BTreeMap<DisplayRow, bool>,
1728 newest_selection_head: Option<DisplayPoint>,
1729 snapshot: &EditorSnapshot,
1730 cx: &mut WindowContext,
1731 ) -> Vec<Option<ShapedLine>> {
1732 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
1733 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
1734 });
1735 if !include_line_numbers {
1736 return Vec::new();
1737 }
1738
1739 let editor = self.editor.read(cx);
1740 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1741 let newest = editor.selections.newest::<Point>(cx);
1742 SelectionLayout::new(
1743 newest,
1744 editor.selections.line_mode,
1745 editor.cursor_shape,
1746 &snapshot.display_snapshot,
1747 true,
1748 true,
1749 None,
1750 )
1751 .head
1752 });
1753 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1754
1755 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1756 let relative_to = if is_relative {
1757 Some(newest_selection_head.row())
1758 } else {
1759 None
1760 };
1761 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
1762 let mut line_number = String::new();
1763 buffer_rows
1764 .into_iter()
1765 .enumerate()
1766 .map(|(ix, multibuffer_row)| {
1767 let multibuffer_row = multibuffer_row?;
1768 let display_row = DisplayRow(rows.start.0 + ix as u32);
1769 let color = if active_rows.contains_key(&display_row) {
1770 cx.theme().colors().editor_active_line_number
1771 } else {
1772 cx.theme().colors().editor_line_number
1773 };
1774 line_number.clear();
1775 let default_number = multibuffer_row.0 + 1;
1776 let number = relative_rows
1777 .get(&DisplayRow(ix as u32 + rows.start.0))
1778 .unwrap_or(&default_number);
1779 write!(&mut line_number, "{number}").unwrap();
1780 let run = TextRun {
1781 len: line_number.len(),
1782 font: self.style.text.font(),
1783 color,
1784 background_color: None,
1785 underline: None,
1786 strikethrough: None,
1787 };
1788 let shaped_line = cx
1789 .text_system()
1790 .shape_line(line_number.clone().into(), font_size, &[run])
1791 .unwrap();
1792 Some(shaped_line)
1793 })
1794 .collect()
1795 }
1796
1797 fn layout_gutter_fold_toggles(
1798 &self,
1799 rows: Range<DisplayRow>,
1800 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1801 active_rows: &BTreeMap<DisplayRow, bool>,
1802 snapshot: &EditorSnapshot,
1803 cx: &mut WindowContext,
1804 ) -> Vec<Option<AnyElement>> {
1805 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
1806 && snapshot.mode == EditorMode::Full
1807 && self.editor.read(cx).is_singleton(cx);
1808 if include_fold_statuses {
1809 buffer_rows
1810 .into_iter()
1811 .enumerate()
1812 .map(|(ix, row)| {
1813 if let Some(multibuffer_row) = row {
1814 let display_row = DisplayRow(rows.start.0 + ix as u32);
1815 let active = active_rows.contains_key(&display_row);
1816 snapshot.render_fold_toggle(
1817 multibuffer_row,
1818 active,
1819 self.editor.clone(),
1820 cx,
1821 )
1822 } else {
1823 None
1824 }
1825 })
1826 .collect()
1827 } else {
1828 Vec::new()
1829 }
1830 }
1831
1832 fn layout_crease_trailers(
1833 &self,
1834 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1835 snapshot: &EditorSnapshot,
1836 cx: &mut WindowContext,
1837 ) -> Vec<Option<AnyElement>> {
1838 buffer_rows
1839 .into_iter()
1840 .map(|row| {
1841 if let Some(multibuffer_row) = row {
1842 snapshot.render_crease_trailer(multibuffer_row, cx)
1843 } else {
1844 None
1845 }
1846 })
1847 .collect()
1848 }
1849
1850 fn layout_lines(
1851 rows: Range<DisplayRow>,
1852 line_number_layouts: &[Option<ShapedLine>],
1853 snapshot: &EditorSnapshot,
1854 style: &EditorStyle,
1855 cx: &mut WindowContext,
1856 ) -> Vec<LineWithInvisibles> {
1857 if rows.start >= rows.end {
1858 return Vec::new();
1859 }
1860
1861 // Show the placeholder when the editor is empty
1862 if snapshot.is_empty() {
1863 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1864 let placeholder_color = cx.theme().colors().text_placeholder;
1865 let placeholder_text = snapshot.placeholder_text();
1866
1867 let placeholder_lines = placeholder_text
1868 .as_ref()
1869 .map_or("", AsRef::as_ref)
1870 .split('\n')
1871 .skip(rows.start.0 as usize)
1872 .chain(iter::repeat(""))
1873 .take(rows.len());
1874 placeholder_lines
1875 .filter_map(move |line| {
1876 let run = TextRun {
1877 len: line.len(),
1878 font: style.text.font(),
1879 color: placeholder_color,
1880 background_color: None,
1881 underline: Default::default(),
1882 strikethrough: None,
1883 };
1884 cx.text_system()
1885 .shape_line(line.to_string().into(), font_size, &[run])
1886 .log_err()
1887 })
1888 .map(|line| LineWithInvisibles {
1889 width: line.width,
1890 len: line.len,
1891 fragments: smallvec![LineFragment::Text(line)],
1892 invisibles: Vec::new(),
1893 font_size,
1894 })
1895 .collect()
1896 } else {
1897 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
1898 LineWithInvisibles::from_chunks(
1899 chunks,
1900 &style.text,
1901 MAX_LINE_LEN,
1902 rows.len(),
1903 line_number_layouts,
1904 snapshot.mode,
1905 cx,
1906 )
1907 }
1908 }
1909
1910 fn prepaint_lines(
1911 &self,
1912 start_row: DisplayRow,
1913 line_layouts: &mut [LineWithInvisibles],
1914 line_height: Pixels,
1915 scroll_pixel_position: gpui::Point<Pixels>,
1916 content_origin: gpui::Point<Pixels>,
1917 cx: &mut WindowContext,
1918 ) -> SmallVec<[AnyElement; 1]> {
1919 let mut line_elements = SmallVec::new();
1920 for (ix, line) in line_layouts.iter_mut().enumerate() {
1921 let row = start_row + DisplayRow(ix as u32);
1922 line.prepaint(
1923 line_height,
1924 scroll_pixel_position,
1925 row,
1926 content_origin,
1927 &mut line_elements,
1928 cx,
1929 );
1930 }
1931 line_elements
1932 }
1933
1934 #[allow(clippy::too_many_arguments)]
1935 fn render_block(
1936 &self,
1937 block: &Block,
1938 available_width: AvailableSpace,
1939 block_id: BlockId,
1940 block_row_start: DisplayRow,
1941 snapshot: &EditorSnapshot,
1942 text_x: Pixels,
1943 rows: &Range<DisplayRow>,
1944 line_layouts: &[LineWithInvisibles],
1945 gutter_dimensions: &GutterDimensions,
1946 line_height: Pixels,
1947 em_width: Pixels,
1948 text_hitbox: &Hitbox,
1949 scroll_width: &mut Pixels,
1950 resized_blocks: &mut HashMap<CustomBlockId, u32>,
1951 cx: &mut WindowContext,
1952 ) -> (AnyElement, Size<Pixels>) {
1953 let mut element = match block {
1954 Block::Custom(block) => {
1955 let align_to = block
1956 .position()
1957 .to_point(&snapshot.buffer_snapshot)
1958 .to_display_point(snapshot);
1959 let anchor_x = text_x
1960 + if rows.contains(&align_to.row()) {
1961 line_layouts[align_to.row().minus(rows.start) as usize]
1962 .x_for_index(align_to.column() as usize)
1963 } else {
1964 layout_line(align_to.row(), snapshot, &self.style, cx)
1965 .x_for_index(align_to.column() as usize)
1966 };
1967
1968 div()
1969 .size_full()
1970 .child(block.render(&mut BlockContext {
1971 context: cx,
1972 anchor_x,
1973 gutter_dimensions,
1974 line_height,
1975 em_width,
1976 block_id,
1977 max_width: text_hitbox.size.width.max(*scroll_width),
1978 editor_style: &self.style,
1979 }))
1980 .cursor(CursorStyle::Arrow)
1981 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
1982 .into_any_element()
1983 }
1984
1985 Block::ExcerptHeader {
1986 buffer,
1987 range,
1988 starts_new_buffer,
1989 height,
1990 id,
1991 show_excerpt_controls,
1992 ..
1993 } => {
1994 let include_root = self
1995 .editor
1996 .read(cx)
1997 .project
1998 .as_ref()
1999 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2000 .unwrap_or_default();
2001
2002 #[derive(Clone)]
2003 struct JumpData {
2004 position: Point,
2005 anchor: text::Anchor,
2006 path: ProjectPath,
2007 line_offset_from_top: u32,
2008 }
2009
2010 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
2011 let jump_path = ProjectPath {
2012 worktree_id: file.worktree_id(cx),
2013 path: file.path.clone(),
2014 };
2015 let jump_anchor = range
2016 .primary
2017 .as_ref()
2018 .map_or(range.context.start, |primary| primary.start);
2019
2020 let excerpt_start = range.context.start;
2021 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2022 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
2023 0
2024 } else {
2025 let excerpt_start_row =
2026 language::ToPoint::to_point(&jump_anchor, buffer).row;
2027 jump_position.row - excerpt_start_row
2028 };
2029
2030 let line_offset_from_top =
2031 block_row_start.0 + *height + offset_from_excerpt_start
2032 - snapshot
2033 .scroll_anchor
2034 .scroll_position(&snapshot.display_snapshot)
2035 .y as u32;
2036
2037 JumpData {
2038 position: jump_position,
2039 anchor: jump_anchor,
2040 path: jump_path,
2041 line_offset_from_top,
2042 }
2043 });
2044
2045 let icon_offset = gutter_dimensions.width
2046 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2047
2048 let element = if *starts_new_buffer {
2049 let path = buffer.resolve_file_path(cx, include_root);
2050 let mut filename = None;
2051 let mut parent_path = None;
2052 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2053 if let Some(path) = path {
2054 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2055 parent_path = path
2056 .parent()
2057 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2058 }
2059
2060 let header_padding = px(6.0);
2061
2062 v_flex()
2063 .id(("path excerpt header", EntityId::from(block_id)))
2064 .w_full()
2065 .px(header_padding)
2066 .child(
2067 h_flex()
2068 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2069 .id("path header block")
2070 .h(2. * cx.line_height())
2071 .pl(gpui::px(12.))
2072 .pr(gpui::px(8.))
2073 .rounded_md()
2074 .shadow_md()
2075 .border_1()
2076 .border_color(cx.theme().colors().border)
2077 .bg(cx.theme().colors().editor_subheader_background)
2078 .justify_between()
2079 .hover(|style| style.bg(cx.theme().colors().element_hover))
2080 .child(
2081 h_flex().gap_3().child(
2082 h_flex()
2083 .gap_2()
2084 .child(
2085 filename
2086 .map(SharedString::from)
2087 .unwrap_or_else(|| "untitled".into()),
2088 )
2089 .when_some(parent_path, |then, path| {
2090 then.child(
2091 div()
2092 .child(path)
2093 .text_color(cx.theme().colors().text_muted),
2094 )
2095 }),
2096 ),
2097 )
2098 .when_some(jump_data.clone(), |el, jump_data| {
2099 el.child(Icon::new(IconName::ArrowUpRight))
2100 .cursor_pointer()
2101 .tooltip(|cx| {
2102 Tooltip::for_action("Jump to File", &OpenExcerpts, cx)
2103 })
2104 .on_mouse_down(MouseButton::Left, |_, cx| {
2105 cx.stop_propagation()
2106 })
2107 .on_click(cx.listener_for(&self.editor, {
2108 move |editor, _, cx| {
2109 editor.jump(
2110 jump_data.path.clone(),
2111 jump_data.position,
2112 jump_data.anchor,
2113 jump_data.line_offset_from_top,
2114 cx,
2115 );
2116 }
2117 }))
2118 }),
2119 )
2120 .children(show_excerpt_controls.then(|| {
2121 h_flex()
2122 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.333)))
2123 .h(1. * cx.line_height())
2124 .pt_1()
2125 .justify_end()
2126 .flex_none()
2127 .w(icon_offset - header_padding)
2128 .child(
2129 ButtonLike::new("expand-icon")
2130 .style(ButtonStyle::Transparent)
2131 .child(
2132 svg()
2133 .path(IconName::ArrowUpFromLine.path())
2134 .size(IconSize::XSmall.rems())
2135 .text_color(cx.theme().colors().editor_line_number)
2136 .group("")
2137 .hover(|style| {
2138 style.text_color(
2139 cx.theme()
2140 .colors()
2141 .editor_active_line_number,
2142 )
2143 }),
2144 )
2145 .on_click(cx.listener_for(&self.editor, {
2146 let id = *id;
2147 move |editor, _, cx| {
2148 editor.expand_excerpt(
2149 id,
2150 multi_buffer::ExpandExcerptDirection::Up,
2151 cx,
2152 );
2153 }
2154 }))
2155 .tooltip({
2156 move |cx| {
2157 Tooltip::for_action(
2158 "Expand Excerpt",
2159 &ExpandExcerpts { lines: 0 },
2160 cx,
2161 )
2162 }
2163 }),
2164 )
2165 }))
2166 } else {
2167 v_flex()
2168 .id(("excerpt header", EntityId::from(block_id)))
2169 .w_full()
2170 .h(snapshot.excerpt_header_height() as f32 * cx.line_height())
2171 .child(
2172 div()
2173 .flex()
2174 .v_flex()
2175 .justify_start()
2176 .id("jump to collapsed context")
2177 .w(relative(1.0))
2178 .h_full()
2179 .child(
2180 div()
2181 .h_px()
2182 .w_full()
2183 .bg(cx.theme().colors().border_variant)
2184 .group_hover("excerpt-jump-action", |style| {
2185 style.bg(cx.theme().colors().border)
2186 }),
2187 ),
2188 )
2189 .child(
2190 h_flex()
2191 .justify_end()
2192 .flex_none()
2193 .w(icon_offset)
2194 .h_full()
2195 .child(
2196 show_excerpt_controls
2197 .then(|| {
2198 ButtonLike::new("expand-icon")
2199 .style(ButtonStyle::Transparent)
2200 .child(
2201 svg()
2202 .path(IconName::ArrowUpFromLine.path())
2203 .size(IconSize::XSmall.rems())
2204 .text_color(
2205 cx.theme().colors().editor_line_number,
2206 )
2207 .group("")
2208 .hover(|style| {
2209 style.text_color(
2210 cx.theme()
2211 .colors()
2212 .editor_active_line_number,
2213 )
2214 }),
2215 )
2216 .on_click(cx.listener_for(&self.editor, {
2217 let id = *id;
2218 move |editor, _, cx| {
2219 editor.expand_excerpt(
2220 id,
2221 multi_buffer::ExpandExcerptDirection::Up,
2222 cx,
2223 );
2224 }
2225 }))
2226 .tooltip({
2227 move |cx| {
2228 Tooltip::for_action(
2229 "Expand Excerpt",
2230 &ExpandExcerpts { lines: 0 },
2231 cx,
2232 )
2233 }
2234 })
2235 })
2236 .unwrap_or_else(|| {
2237 ButtonLike::new("jump-icon")
2238 .style(ButtonStyle::Transparent)
2239 .child(
2240 svg()
2241 .path(IconName::ArrowUpRight.path())
2242 .size(IconSize::XSmall.rems())
2243 .text_color(
2244 cx.theme().colors().border_variant,
2245 )
2246 .group("excerpt-jump-action")
2247 .group_hover(
2248 "excerpt-jump-action",
2249 |style| {
2250 style.text_color(
2251 cx.theme().colors().border,
2252 )
2253 },
2254 ),
2255 )
2256 .when_some(jump_data.clone(), |this, jump_data| {
2257 this.on_click(cx.listener_for(&self.editor, {
2258 let path = jump_data.path.clone();
2259 move |editor, _, cx| {
2260 cx.stop_propagation();
2261
2262 editor.jump(
2263 path.clone(),
2264 jump_data.position,
2265 jump_data.anchor,
2266 jump_data.line_offset_from_top,
2267 cx,
2268 );
2269 }
2270 }))
2271 .tooltip(move |cx| {
2272 Tooltip::for_action(
2273 format!(
2274 "Jump to {}:L{}",
2275 jump_data.path.path.display(),
2276 jump_data.position.row + 1
2277 ),
2278 &OpenExcerpts,
2279 cx,
2280 )
2281 })
2282 })
2283 }),
2284 ),
2285 )
2286 .group("excerpt-jump-action")
2287 .cursor_pointer()
2288 .when_some(jump_data.clone(), |this, jump_data| {
2289 this.on_click(cx.listener_for(&self.editor, {
2290 let path = jump_data.path.clone();
2291 move |editor, _, cx| {
2292 cx.stop_propagation();
2293
2294 editor.jump(
2295 path.clone(),
2296 jump_data.position,
2297 jump_data.anchor,
2298 jump_data.line_offset_from_top,
2299 cx,
2300 );
2301 }
2302 }))
2303 .tooltip(move |cx| {
2304 Tooltip::for_action(
2305 format!(
2306 "Jump to {}:L{}",
2307 jump_data.path.path.display(),
2308 jump_data.position.row + 1
2309 ),
2310 &OpenExcerpts,
2311 cx,
2312 )
2313 })
2314 })
2315 };
2316 element.into_any()
2317 }
2318
2319 Block::ExcerptFooter { id, .. } => {
2320 let element = v_flex()
2321 .id(("excerpt footer", EntityId::from(block_id)))
2322 .w_full()
2323 .h(snapshot.excerpt_footer_height() as f32 * cx.line_height())
2324 .child(
2325 h_flex()
2326 .justify_end()
2327 .flex_none()
2328 .w(gutter_dimensions.width
2329 - (gutter_dimensions.left_padding + gutter_dimensions.margin))
2330 .h_full()
2331 .child(
2332 ButtonLike::new("expand-icon")
2333 .style(ButtonStyle::Transparent)
2334 .child(
2335 svg()
2336 .path(IconName::ArrowDownFromLine.path())
2337 .size(IconSize::XSmall.rems())
2338 .text_color(cx.theme().colors().editor_line_number)
2339 .group("")
2340 .hover(|style| {
2341 style.text_color(
2342 cx.theme().colors().editor_active_line_number,
2343 )
2344 }),
2345 )
2346 .on_click(cx.listener_for(&self.editor, {
2347 let id = *id;
2348 move |editor, _, cx| {
2349 editor.expand_excerpt(
2350 id,
2351 multi_buffer::ExpandExcerptDirection::Down,
2352 cx,
2353 );
2354 }
2355 }))
2356 .tooltip({
2357 move |cx| {
2358 Tooltip::for_action(
2359 "Expand Excerpt",
2360 &ExpandExcerpts { lines: 0 },
2361 cx,
2362 )
2363 }
2364 }),
2365 ),
2366 );
2367 element.into_any()
2368 }
2369 };
2370
2371 // Discover the element's content height, then round up to the nearest multiple of line height.
2372 let preliminary_size =
2373 element.layout_as_root(size(available_width, AvailableSpace::MinContent), cx);
2374 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2375 let final_size = if preliminary_size.height == quantized_height {
2376 preliminary_size
2377 } else {
2378 element.layout_as_root(size(available_width, quantized_height.into()), cx)
2379 };
2380
2381 if let BlockId::Custom(custom_block_id) = block_id {
2382 if block.height() > 0 {
2383 let element_height_in_lines =
2384 ((final_size.height / line_height).ceil() as u32).max(1);
2385 if element_height_in_lines != block.height() {
2386 resized_blocks.insert(custom_block_id, element_height_in_lines);
2387 }
2388 }
2389 }
2390
2391 (element, final_size)
2392 }
2393
2394 #[allow(clippy::too_many_arguments)]
2395 fn render_blocks(
2396 &self,
2397 rows: Range<DisplayRow>,
2398 snapshot: &EditorSnapshot,
2399 hitbox: &Hitbox,
2400 text_hitbox: &Hitbox,
2401 scroll_width: &mut Pixels,
2402 gutter_dimensions: &GutterDimensions,
2403 em_width: Pixels,
2404 text_x: Pixels,
2405 line_height: Pixels,
2406 line_layouts: &[LineWithInvisibles],
2407 cx: &mut WindowContext,
2408 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2409 let (fixed_blocks, non_fixed_blocks) = snapshot
2410 .blocks_in_range(rows.clone())
2411 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2412
2413 let mut focused_block = self
2414 .editor
2415 .update(cx, |editor, _| editor.take_focused_block());
2416 let mut fixed_block_max_width = Pixels::ZERO;
2417 let mut blocks = Vec::new();
2418 let mut resized_blocks = HashMap::default();
2419
2420 for (row, block) in fixed_blocks {
2421 let block_id = block.id();
2422
2423 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2424 focused_block = None;
2425 }
2426
2427 let (element, element_size) = self.render_block(
2428 block,
2429 AvailableSpace::MinContent,
2430 block_id,
2431 row,
2432 snapshot,
2433 text_x,
2434 &rows,
2435 line_layouts,
2436 gutter_dimensions,
2437 line_height,
2438 em_width,
2439 text_hitbox,
2440 scroll_width,
2441 &mut resized_blocks,
2442 cx,
2443 );
2444 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2445 blocks.push(BlockLayout {
2446 id: block_id,
2447 row: Some(row),
2448 element,
2449 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
2450 style: BlockStyle::Fixed,
2451 });
2452 }
2453 for (row, block) in non_fixed_blocks {
2454 let style = block.style();
2455 let width = match style {
2456 BlockStyle::Sticky => hitbox.size.width,
2457 BlockStyle::Flex => hitbox
2458 .size
2459 .width
2460 .max(fixed_block_max_width)
2461 .max(gutter_dimensions.width + *scroll_width),
2462 BlockStyle::Fixed => unreachable!(),
2463 };
2464 let block_id = block.id();
2465
2466 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2467 focused_block = None;
2468 }
2469
2470 let (element, element_size) = self.render_block(
2471 block,
2472 width.into(),
2473 block_id,
2474 row,
2475 snapshot,
2476 text_x,
2477 &rows,
2478 line_layouts,
2479 gutter_dimensions,
2480 line_height,
2481 em_width,
2482 text_hitbox,
2483 scroll_width,
2484 &mut resized_blocks,
2485 cx,
2486 );
2487
2488 blocks.push(BlockLayout {
2489 id: block_id,
2490 row: Some(row),
2491 element,
2492 available_space: size(width.into(), element_size.height.into()),
2493 style,
2494 });
2495 }
2496
2497 if let Some(focused_block) = focused_block {
2498 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2499 if focus_handle.is_focused(cx) {
2500 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2501 let style = block.style();
2502 let width = match style {
2503 BlockStyle::Fixed => AvailableSpace::MinContent,
2504 BlockStyle::Flex => AvailableSpace::Definite(
2505 hitbox
2506 .size
2507 .width
2508 .max(fixed_block_max_width)
2509 .max(gutter_dimensions.width + *scroll_width),
2510 ),
2511 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2512 };
2513
2514 let (element, element_size) = self.render_block(
2515 &block,
2516 width,
2517 focused_block.id,
2518 rows.end,
2519 snapshot,
2520 text_x,
2521 &rows,
2522 line_layouts,
2523 gutter_dimensions,
2524 line_height,
2525 em_width,
2526 text_hitbox,
2527 scroll_width,
2528 &mut resized_blocks,
2529 cx,
2530 );
2531
2532 blocks.push(BlockLayout {
2533 id: block.id(),
2534 row: None,
2535 element,
2536 available_space: size(width, element_size.height.into()),
2537 style,
2538 });
2539 }
2540 }
2541 }
2542 }
2543
2544 if resized_blocks.is_empty() {
2545 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2546 Ok(blocks)
2547 } else {
2548 Err(resized_blocks)
2549 }
2550 }
2551
2552 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
2553 /// a restart of rendering for the editor based on the new sizes.
2554 fn layout_blocks(
2555 &self,
2556 blocks: &mut Vec<BlockLayout>,
2557 hitbox: &Hitbox,
2558 line_height: Pixels,
2559 scroll_pixel_position: gpui::Point<Pixels>,
2560 cx: &mut WindowContext,
2561 ) {
2562 for block in blocks {
2563 let mut origin = if let Some(row) = block.row {
2564 hitbox.origin
2565 + point(
2566 Pixels::ZERO,
2567 row.as_f32() * line_height - scroll_pixel_position.y,
2568 )
2569 } else {
2570 // Position the block outside the visible area
2571 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2572 };
2573
2574 if !matches!(block.style, BlockStyle::Sticky) {
2575 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2576 }
2577
2578 let focus_handle = block
2579 .element
2580 .prepaint_as_root(origin, block.available_space, cx);
2581
2582 if let Some(focus_handle) = focus_handle {
2583 self.editor.update(cx, |editor, _cx| {
2584 editor.set_focused_block(FocusedBlock {
2585 id: block.id,
2586 focus_handle: focus_handle.downgrade(),
2587 });
2588 });
2589 }
2590 }
2591 }
2592
2593 #[allow(clippy::too_many_arguments)]
2594 fn layout_context_menu(
2595 &self,
2596 line_height: Pixels,
2597 hitbox: &Hitbox,
2598 text_hitbox: &Hitbox,
2599 content_origin: gpui::Point<Pixels>,
2600 start_row: DisplayRow,
2601 scroll_pixel_position: gpui::Point<Pixels>,
2602 line_layouts: &[LineWithInvisibles],
2603 newest_selection_head: DisplayPoint,
2604 gutter_overshoot: Pixels,
2605 cx: &mut WindowContext,
2606 ) -> bool {
2607 let max_height = cmp::min(
2608 12. * line_height,
2609 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
2610 );
2611 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
2612 if editor.context_menu_visible() {
2613 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
2614 } else {
2615 None
2616 }
2617 }) else {
2618 return false;
2619 };
2620
2621 let context_menu_size = context_menu.layout_as_root(AvailableSpace::min_size(), cx);
2622
2623 let (x, y) = match position {
2624 crate::ContextMenuOrigin::EditorPoint(point) => {
2625 let cursor_row_layout = &line_layouts[point.row().minus(start_row) as usize];
2626 let x = cursor_row_layout.x_for_index(point.column() as usize)
2627 - scroll_pixel_position.x;
2628 let y = point.row().next_row().as_f32() * line_height - scroll_pixel_position.y;
2629 (x, y)
2630 }
2631 crate::ContextMenuOrigin::GutterIndicator(row) => {
2632 // Context menu was spawned via a click on a gutter. Ensure it's a bit closer to the indicator than just a plain first column of the
2633 // text field.
2634 let x = -gutter_overshoot;
2635 let y = row.next_row().as_f32() * line_height - scroll_pixel_position.y;
2636 (x, y)
2637 }
2638 };
2639
2640 let mut list_origin = content_origin + point(x, y);
2641 let list_width = context_menu_size.width;
2642 let list_height = context_menu_size.height;
2643
2644 // Snap the right edge of the list to the right edge of the window if
2645 // its horizontal bounds overflow.
2646 if list_origin.x + list_width > cx.viewport_size().width {
2647 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
2648 }
2649
2650 if list_origin.y + list_height > text_hitbox.lower_right().y {
2651 list_origin.y -= line_height + list_height;
2652 }
2653
2654 cx.defer_draw(context_menu, list_origin, 1);
2655 true
2656 }
2657
2658 fn layout_mouse_context_menu(
2659 &self,
2660 editor_snapshot: &EditorSnapshot,
2661 visible_range: Range<DisplayRow>,
2662 cx: &mut WindowContext,
2663 ) -> Option<AnyElement> {
2664 let position = self.editor.update(cx, |editor, cx| {
2665 let visible_start_point = editor.display_to_pixel_point(
2666 DisplayPoint::new(visible_range.start, 0),
2667 editor_snapshot,
2668 cx,
2669 )?;
2670 let visible_end_point = editor.display_to_pixel_point(
2671 DisplayPoint::new(visible_range.end, 0),
2672 editor_snapshot,
2673 cx,
2674 )?;
2675
2676 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2677 let (source_display_point, position) = match mouse_context_menu.position {
2678 MenuPosition::PinnedToScreen(point) => (None, point),
2679 MenuPosition::PinnedToEditor {
2680 source,
2681 offset_x,
2682 offset_y,
2683 } => {
2684 let source_display_point = source.to_display_point(editor_snapshot);
2685 let mut source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
2686 source_point.x += offset_x;
2687 source_point.y += offset_y;
2688 (Some(source_display_point), source_point)
2689 }
2690 };
2691
2692 let source_included = source_display_point.map_or(true, |source_display_point| {
2693 visible_range
2694 .to_inclusive()
2695 .contains(&source_display_point.row())
2696 });
2697 let position_included =
2698 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
2699 if !source_included && !position_included {
2700 None
2701 } else {
2702 Some(position)
2703 }
2704 })?;
2705
2706 let mut element = self.editor.update(cx, |editor, _| {
2707 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2708 let context_menu = mouse_context_menu.context_menu.clone();
2709
2710 Some(
2711 deferred(
2712 anchored()
2713 .position(position)
2714 .child(context_menu)
2715 .anchor(AnchorCorner::TopLeft)
2716 .snap_to_window(),
2717 )
2718 .with_priority(1)
2719 .into_any(),
2720 )
2721 })?;
2722
2723 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
2724 Some(element)
2725 }
2726
2727 #[allow(clippy::too_many_arguments)]
2728 fn layout_hover_popovers(
2729 &self,
2730 snapshot: &EditorSnapshot,
2731 hitbox: &Hitbox,
2732 text_hitbox: &Hitbox,
2733 visible_display_row_range: Range<DisplayRow>,
2734 content_origin: gpui::Point<Pixels>,
2735 scroll_pixel_position: gpui::Point<Pixels>,
2736 line_layouts: &[LineWithInvisibles],
2737 line_height: Pixels,
2738 em_width: Pixels,
2739 cx: &mut WindowContext,
2740 ) {
2741 struct MeasuredHoverPopover {
2742 element: AnyElement,
2743 size: Size<Pixels>,
2744 horizontal_offset: Pixels,
2745 }
2746
2747 let max_size = size(
2748 (120. * em_width) // Default size
2749 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2750 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2751 (16. * line_height) // Default size
2752 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2753 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2754 );
2755
2756 let hover_popovers = self.editor.update(cx, |editor, cx| {
2757 editor
2758 .hover_state
2759 .render(&snapshot, visible_display_row_range.clone(), max_size, cx)
2760 });
2761 let Some((position, hover_popovers)) = hover_popovers else {
2762 return;
2763 };
2764
2765 // This is safe because we check on layout whether the required row is available
2766 let hovered_row_layout =
2767 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
2768
2769 // Compute Hovered Point
2770 let x =
2771 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
2772 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
2773 let hovered_point = content_origin + point(x, y);
2774
2775 let mut overall_height = Pixels::ZERO;
2776 let mut measured_hover_popovers = Vec::new();
2777 for mut hover_popover in hover_popovers {
2778 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
2779 let horizontal_offset =
2780 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
2781
2782 overall_height += HOVER_POPOVER_GAP + size.height;
2783
2784 measured_hover_popovers.push(MeasuredHoverPopover {
2785 element: hover_popover,
2786 size,
2787 horizontal_offset,
2788 });
2789 }
2790 overall_height += HOVER_POPOVER_GAP;
2791
2792 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
2793 let mut occlusion = div()
2794 .size_full()
2795 .occlude()
2796 .on_mouse_move(|_, cx| cx.stop_propagation())
2797 .into_any_element();
2798 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
2799 cx.defer_draw(occlusion, origin, 2);
2800 }
2801
2802 if hovered_point.y > overall_height {
2803 // There is enough space above. Render popovers above the hovered point
2804 let mut current_y = hovered_point.y;
2805 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2806 let size = popover.size;
2807 let popover_origin = point(
2808 hovered_point.x + popover.horizontal_offset,
2809 current_y - size.height,
2810 );
2811
2812 cx.defer_draw(popover.element, popover_origin, 2);
2813 if position != itertools::Position::Last {
2814 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
2815 draw_occluder(size.width, origin, cx);
2816 }
2817
2818 current_y = popover_origin.y - HOVER_POPOVER_GAP;
2819 }
2820 } else {
2821 // There is not enough space above. Render popovers below the hovered point
2822 let mut current_y = hovered_point.y + line_height;
2823 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2824 let size = popover.size;
2825 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
2826
2827 cx.defer_draw(popover.element, popover_origin, 2);
2828 if position != itertools::Position::Last {
2829 let origin = point(popover_origin.x, popover_origin.y + size.height);
2830 draw_occluder(size.width, origin, cx);
2831 }
2832
2833 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
2834 }
2835 }
2836 }
2837
2838 #[allow(clippy::too_many_arguments)]
2839 fn layout_signature_help(
2840 &self,
2841 hitbox: &Hitbox,
2842 content_origin: gpui::Point<Pixels>,
2843 scroll_pixel_position: gpui::Point<Pixels>,
2844 newest_selection_head: Option<DisplayPoint>,
2845 start_row: DisplayRow,
2846 line_layouts: &[LineWithInvisibles],
2847 line_height: Pixels,
2848 em_width: Pixels,
2849 cx: &mut WindowContext,
2850 ) {
2851 if !self.editor.focus_handle(cx).is_focused(cx) {
2852 return;
2853 }
2854 let Some(newest_selection_head) = newest_selection_head else {
2855 return;
2856 };
2857 let selection_row = newest_selection_head.row();
2858 if selection_row < start_row {
2859 return;
2860 }
2861 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
2862 else {
2863 return;
2864 };
2865
2866 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
2867 - scroll_pixel_position.x
2868 + content_origin.x;
2869 let start_y =
2870 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
2871
2872 let max_size = size(
2873 (120. * em_width) // Default size
2874 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2875 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2876 (16. * line_height) // Default size
2877 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2878 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2879 );
2880
2881 let maybe_element = self.editor.update(cx, |editor, cx| {
2882 if let Some(popover) = editor.signature_help_state.popover_mut() {
2883 let element = popover.render(
2884 &self.style,
2885 max_size,
2886 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2887 cx,
2888 );
2889 Some(element)
2890 } else {
2891 None
2892 }
2893 });
2894 if let Some(mut element) = maybe_element {
2895 let window_size = cx.viewport_size();
2896 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
2897 let mut point = point(start_x, start_y - size.height);
2898
2899 // Adjusting to ensure the popover does not overflow in the X-axis direction.
2900 if point.x + size.width >= window_size.width {
2901 point.x = window_size.width - size.width;
2902 }
2903
2904 cx.defer_draw(element, point, 1)
2905 }
2906 }
2907
2908 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
2909 cx.paint_layer(layout.hitbox.bounds, |cx| {
2910 let scroll_top = layout.position_map.snapshot.scroll_position().y;
2911 let gutter_bg = cx.theme().colors().editor_gutter_background;
2912 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
2913 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
2914
2915 if let EditorMode::Full = layout.mode {
2916 let mut active_rows = layout.active_rows.iter().peekable();
2917 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
2918 let mut end_row = start_row.0;
2919 while active_rows
2920 .peek()
2921 .map_or(false, |(active_row, has_selection)| {
2922 active_row.0 == end_row + 1
2923 && *has_selection == contains_non_empty_selection
2924 })
2925 {
2926 active_rows.next().unwrap();
2927 end_row += 1;
2928 }
2929
2930 if !contains_non_empty_selection {
2931 let highlight_h_range =
2932 match layout.position_map.snapshot.current_line_highlight {
2933 CurrentLineHighlight::Gutter => Some(Range {
2934 start: layout.hitbox.left(),
2935 end: layout.gutter_hitbox.right(),
2936 }),
2937 CurrentLineHighlight::Line => Some(Range {
2938 start: layout.text_hitbox.bounds.left(),
2939 end: layout.text_hitbox.bounds.right(),
2940 }),
2941 CurrentLineHighlight::All => Some(Range {
2942 start: layout.hitbox.left(),
2943 end: layout.hitbox.right(),
2944 }),
2945 CurrentLineHighlight::None => None,
2946 };
2947 if let Some(range) = highlight_h_range {
2948 let active_line_bg = cx.theme().colors().editor_active_line_background;
2949 let bounds = Bounds {
2950 origin: point(
2951 range.start,
2952 layout.hitbox.origin.y
2953 + (start_row.as_f32() - scroll_top)
2954 * layout.position_map.line_height,
2955 ),
2956 size: size(
2957 range.end - range.start,
2958 layout.position_map.line_height
2959 * (end_row - start_row.0 + 1) as f32,
2960 ),
2961 };
2962 cx.paint_quad(fill(bounds, active_line_bg));
2963 }
2964 }
2965 }
2966
2967 let mut paint_highlight =
2968 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
2969 let origin = point(
2970 layout.hitbox.origin.x,
2971 layout.hitbox.origin.y
2972 + (highlight_row_start.as_f32() - scroll_top)
2973 * layout.position_map.line_height,
2974 );
2975 let size = size(
2976 layout.hitbox.size.width,
2977 layout.position_map.line_height
2978 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
2979 );
2980 cx.paint_quad(fill(Bounds { origin, size }, color));
2981 };
2982
2983 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
2984 for (&new_row, &new_color) in &layout.highlighted_rows {
2985 match &mut current_paint {
2986 Some((current_color, current_range)) => {
2987 let current_color = *current_color;
2988 let new_range_started = current_color != new_color
2989 || current_range.end.next_row() != new_row;
2990 if new_range_started {
2991 paint_highlight(
2992 current_range.start,
2993 current_range.end,
2994 current_color,
2995 );
2996 current_paint = Some((new_color, new_row..new_row));
2997 continue;
2998 } else {
2999 current_range.end = current_range.end.next_row();
3000 }
3001 }
3002 None => current_paint = Some((new_color, new_row..new_row)),
3003 };
3004 }
3005 if let Some((color, range)) = current_paint {
3006 paint_highlight(range.start, range.end, color);
3007 }
3008
3009 let scroll_left =
3010 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
3011
3012 for (wrap_position, active) in layout.wrap_guides.iter() {
3013 let x = (layout.text_hitbox.origin.x
3014 + *wrap_position
3015 + layout.position_map.em_width / 2.)
3016 - scroll_left;
3017
3018 let show_scrollbars = layout
3019 .scrollbar_layout
3020 .as_ref()
3021 .map_or(false, |scrollbar| scrollbar.visible);
3022 if x < layout.text_hitbox.origin.x
3023 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
3024 {
3025 continue;
3026 }
3027
3028 let color = if *active {
3029 cx.theme().colors().editor_active_wrap_guide
3030 } else {
3031 cx.theme().colors().editor_wrap_guide
3032 };
3033 cx.paint_quad(fill(
3034 Bounds {
3035 origin: point(x, layout.text_hitbox.origin.y),
3036 size: size(px(1.), layout.text_hitbox.size.height),
3037 },
3038 color,
3039 ));
3040 }
3041 }
3042 })
3043 }
3044
3045 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3046 let Some(indent_guides) = &layout.indent_guides else {
3047 return;
3048 };
3049
3050 let faded_color = |color: Hsla, alpha: f32| {
3051 let mut faded = color;
3052 faded.a = alpha;
3053 faded
3054 };
3055
3056 for indent_guide in indent_guides {
3057 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3058 let settings = indent_guide.settings;
3059
3060 // TODO fixed for now, expose them through themes later
3061 const INDENT_AWARE_ALPHA: f32 = 0.2;
3062 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3063 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3064 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3065
3066 let line_color = match (settings.coloring, indent_guide.active) {
3067 (IndentGuideColoring::Disabled, _) => None,
3068 (IndentGuideColoring::Fixed, false) => {
3069 Some(cx.theme().colors().editor_indent_guide)
3070 }
3071 (IndentGuideColoring::Fixed, true) => {
3072 Some(cx.theme().colors().editor_indent_guide_active)
3073 }
3074 (IndentGuideColoring::IndentAware, false) => {
3075 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3076 }
3077 (IndentGuideColoring::IndentAware, true) => {
3078 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3079 }
3080 };
3081
3082 let background_color = match (settings.background_coloring, indent_guide.active) {
3083 (IndentGuideBackgroundColoring::Disabled, _) => None,
3084 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3085 indent_accent_colors,
3086 INDENT_AWARE_BACKGROUND_ALPHA,
3087 )),
3088 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3089 indent_accent_colors,
3090 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3091 )),
3092 };
3093
3094 let requested_line_width = if indent_guide.active {
3095 settings.active_line_width
3096 } else {
3097 settings.line_width
3098 }
3099 .clamp(1, 10);
3100 let mut line_indicator_width = 0.;
3101 if let Some(color) = line_color {
3102 cx.paint_quad(fill(
3103 Bounds {
3104 origin: indent_guide.origin,
3105 size: size(px(requested_line_width as f32), indent_guide.length),
3106 },
3107 color,
3108 ));
3109 line_indicator_width = requested_line_width as f32;
3110 }
3111
3112 if let Some(color) = background_color {
3113 let width = indent_guide.single_indent_width - px(line_indicator_width);
3114 cx.paint_quad(fill(
3115 Bounds {
3116 origin: point(
3117 indent_guide.origin.x + px(line_indicator_width),
3118 indent_guide.origin.y,
3119 ),
3120 size: size(width, indent_guide.length),
3121 },
3122 color,
3123 ));
3124 }
3125 }
3126 }
3127
3128 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3129 let line_height = layout.position_map.line_height;
3130 let scroll_position = layout.position_map.snapshot.scroll_position();
3131 let scroll_top = scroll_position.y * line_height;
3132
3133 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3134
3135 for (ix, line) in layout.line_numbers.iter().enumerate() {
3136 if let Some(line) = line {
3137 let line_origin = layout.gutter_hitbox.origin
3138 + point(
3139 layout.gutter_hitbox.size.width
3140 - line.width
3141 - layout.gutter_dimensions.right_padding,
3142 ix as f32 * line_height - (scroll_top % line_height),
3143 );
3144
3145 line.paint(line_origin, line_height, cx).log_err();
3146 }
3147 }
3148 }
3149
3150 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
3151 if layout.display_hunks.is_empty() {
3152 return;
3153 }
3154
3155 let line_height = layout.position_map.line_height;
3156 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3157 for (hunk, hitbox) in &layout.display_hunks {
3158 let hunk_to_paint = match hunk {
3159 DisplayDiffHunk::Folded { .. } => {
3160 let hunk_bounds = Self::diff_hunk_bounds(
3161 &layout.position_map.snapshot,
3162 line_height,
3163 layout.gutter_hitbox.bounds,
3164 &hunk,
3165 );
3166 Some((
3167 hunk_bounds,
3168 cx.theme().status().modified,
3169 Corners::all(1. * line_height),
3170 ))
3171 }
3172 DisplayDiffHunk::Unfolded { status, .. } => {
3173 hitbox.as_ref().map(|hunk_hitbox| match status {
3174 DiffHunkStatus::Added => (
3175 hunk_hitbox.bounds,
3176 cx.theme().status().created,
3177 Corners::all(0.05 * line_height),
3178 ),
3179 DiffHunkStatus::Modified => (
3180 hunk_hitbox.bounds,
3181 cx.theme().status().modified,
3182 Corners::all(0.05 * line_height),
3183 ),
3184 DiffHunkStatus::Removed => (
3185 Bounds::new(
3186 point(
3187 hunk_hitbox.origin.x - hunk_hitbox.size.width,
3188 hunk_hitbox.origin.y,
3189 ),
3190 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
3191 ),
3192 cx.theme().status().deleted,
3193 Corners::all(1. * line_height),
3194 ),
3195 })
3196 }
3197 };
3198
3199 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
3200 cx.paint_quad(quad(
3201 hunk_bounds,
3202 corner_radii,
3203 background_color,
3204 Edges::default(),
3205 transparent_black(),
3206 ));
3207 }
3208 }
3209 });
3210 }
3211
3212 pub(super) fn diff_hunk_bounds(
3213 snapshot: &EditorSnapshot,
3214 line_height: Pixels,
3215 gutter_bounds: Bounds<Pixels>,
3216 hunk: &DisplayDiffHunk,
3217 ) -> Bounds<Pixels> {
3218 let scroll_position = snapshot.scroll_position();
3219 let scroll_top = scroll_position.y * line_height;
3220
3221 match hunk {
3222 DisplayDiffHunk::Folded { display_row, .. } => {
3223 let start_y = display_row.as_f32() * line_height - scroll_top;
3224 let end_y = start_y + line_height;
3225
3226 let width = 0.275 * line_height;
3227 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3228 let highlight_size = size(width, end_y - start_y);
3229 Bounds::new(highlight_origin, highlight_size)
3230 }
3231 DisplayDiffHunk::Unfolded {
3232 display_row_range,
3233 status,
3234 ..
3235 } => match status {
3236 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
3237 let start_row = display_row_range.start;
3238 let end_row = display_row_range.end;
3239 // If we're in a multibuffer, row range span might include an
3240 // excerpt header, so if we were to draw the marker straight away,
3241 // the hunk might include the rows of that header.
3242 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
3243 // Instead, we simply check whether the range we're dealing with includes
3244 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
3245 let end_row_in_current_excerpt = snapshot
3246 .blocks_in_range(start_row..end_row)
3247 .find_map(|(start_row, block)| {
3248 if matches!(block, Block::ExcerptHeader { .. }) {
3249 Some(start_row)
3250 } else {
3251 None
3252 }
3253 })
3254 .unwrap_or(end_row);
3255
3256 let start_y = start_row.as_f32() * line_height - scroll_top;
3257 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
3258
3259 let width = 0.275 * line_height;
3260 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3261 let highlight_size = size(width, end_y - start_y);
3262 Bounds::new(highlight_origin, highlight_size)
3263 }
3264 DiffHunkStatus::Removed => {
3265 let row = display_row_range.start;
3266
3267 let offset = line_height / 2.;
3268 let start_y = row.as_f32() * line_height - offset - scroll_top;
3269 let end_y = start_y + line_height;
3270
3271 let width = 0.35 * line_height;
3272 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3273 let highlight_size = size(width, end_y - start_y);
3274 Bounds::new(highlight_origin, highlight_size)
3275 }
3276 },
3277 }
3278 }
3279
3280 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3281 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3282 cx.with_element_namespace("gutter_fold_toggles", |cx| {
3283 for fold_indicator in layout.gutter_fold_toggles.iter_mut().flatten() {
3284 fold_indicator.paint(cx);
3285 }
3286 });
3287
3288 for test_indicator in layout.test_indicators.iter_mut() {
3289 test_indicator.paint(cx);
3290 }
3291 for close_indicator in layout.close_indicators.iter_mut() {
3292 close_indicator.paint(cx);
3293 }
3294
3295 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
3296 indicator.paint(cx);
3297 }
3298 });
3299 }
3300
3301 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3302 for (_, hunk_hitbox) in &layout.display_hunks {
3303 if let Some(hunk_hitbox) = hunk_hitbox {
3304 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
3305 }
3306 }
3307
3308 let show_git_gutter = layout
3309 .position_map
3310 .snapshot
3311 .show_git_diff_gutter
3312 .unwrap_or_else(|| {
3313 matches!(
3314 ProjectSettings::get_global(cx).git.git_gutter,
3315 Some(GitGutterSetting::TrackedFiles)
3316 )
3317 });
3318 if show_git_gutter {
3319 Self::paint_diff_hunks(layout, cx)
3320 }
3321
3322 let highlight_width = 0.275 * layout.position_map.line_height;
3323 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
3324 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3325 for (range, color) in &layout.highlighted_gutter_ranges {
3326 let start_row = if range.start.row() < layout.visible_display_row_range.start {
3327 layout.visible_display_row_range.start - DisplayRow(1)
3328 } else {
3329 range.start.row()
3330 };
3331 let end_row = if range.end.row() > layout.visible_display_row_range.end {
3332 layout.visible_display_row_range.end + DisplayRow(1)
3333 } else {
3334 range.end.row()
3335 };
3336
3337 let start_y = layout.gutter_hitbox.top()
3338 + start_row.0 as f32 * layout.position_map.line_height
3339 - layout.position_map.scroll_pixel_position.y;
3340 let end_y = layout.gutter_hitbox.top()
3341 + (end_row.0 + 1) as f32 * layout.position_map.line_height
3342 - layout.position_map.scroll_pixel_position.y;
3343 let bounds = Bounds::from_corners(
3344 point(layout.gutter_hitbox.left(), start_y),
3345 point(layout.gutter_hitbox.left() + highlight_width, end_y),
3346 );
3347 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
3348 }
3349 });
3350 }
3351
3352 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3353 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
3354 return;
3355 };
3356
3357 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3358 for mut blame_element in blamed_display_rows.into_iter() {
3359 blame_element.paint(cx);
3360 }
3361 })
3362 }
3363
3364 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3365 cx.with_content_mask(
3366 Some(ContentMask {
3367 bounds: layout.text_hitbox.bounds,
3368 }),
3369 |cx| {
3370 let cursor_style = if self
3371 .editor
3372 .read(cx)
3373 .hovered_link_state
3374 .as_ref()
3375 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
3376 {
3377 CursorStyle::PointingHand
3378 } else {
3379 CursorStyle::IBeam
3380 };
3381 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
3382
3383 let invisible_display_ranges = self.paint_highlights(layout, cx);
3384 self.paint_lines(&invisible_display_ranges, layout, cx);
3385 self.paint_redactions(layout, cx);
3386 self.paint_cursors(layout, cx);
3387 self.paint_inline_blame(layout, cx);
3388 cx.with_element_namespace("crease_trailers", |cx| {
3389 for trailer in layout.crease_trailers.iter_mut().flatten() {
3390 trailer.element.paint(cx);
3391 }
3392 });
3393 },
3394 )
3395 }
3396
3397 fn paint_highlights(
3398 &mut self,
3399 layout: &mut EditorLayout,
3400 cx: &mut WindowContext,
3401 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
3402 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3403 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
3404 let line_end_overshoot = 0.15 * layout.position_map.line_height;
3405 for (range, color) in &layout.highlighted_ranges {
3406 self.paint_highlighted_range(
3407 range.clone(),
3408 *color,
3409 Pixels::ZERO,
3410 line_end_overshoot,
3411 layout,
3412 cx,
3413 );
3414 }
3415
3416 let corner_radius = 0.15 * layout.position_map.line_height;
3417
3418 for (player_color, selections) in &layout.selections {
3419 for selection in selections.into_iter() {
3420 self.paint_highlighted_range(
3421 selection.range.clone(),
3422 player_color.selection,
3423 corner_radius,
3424 corner_radius * 2.,
3425 layout,
3426 cx,
3427 );
3428
3429 if selection.is_local && !selection.range.is_empty() {
3430 invisible_display_ranges.push(selection.range.clone());
3431 }
3432 }
3433 }
3434 invisible_display_ranges
3435 })
3436 }
3437
3438 fn paint_lines(
3439 &mut self,
3440 invisible_display_ranges: &[Range<DisplayPoint>],
3441 layout: &mut EditorLayout,
3442 cx: &mut WindowContext,
3443 ) {
3444 let whitespace_setting = self
3445 .editor
3446 .read(cx)
3447 .buffer
3448 .read(cx)
3449 .settings_at(0, cx)
3450 .show_whitespaces;
3451
3452 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
3453 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
3454 line_with_invisibles.draw(
3455 layout,
3456 row,
3457 layout.content_origin,
3458 whitespace_setting,
3459 invisible_display_ranges,
3460 cx,
3461 )
3462 }
3463
3464 for line_element in &mut layout.line_elements {
3465 line_element.paint(cx);
3466 }
3467 }
3468
3469 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3470 if layout.redacted_ranges.is_empty() {
3471 return;
3472 }
3473
3474 let line_end_overshoot = layout.line_end_overshoot();
3475
3476 // A softer than perfect black
3477 let redaction_color = gpui::rgb(0x0e1111);
3478
3479 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3480 for range in layout.redacted_ranges.iter() {
3481 self.paint_highlighted_range(
3482 range.clone(),
3483 redaction_color.into(),
3484 Pixels::ZERO,
3485 line_end_overshoot,
3486 layout,
3487 cx,
3488 );
3489 }
3490 });
3491 }
3492
3493 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3494 for cursor in &mut layout.visible_cursors {
3495 cursor.paint(layout.content_origin, cx);
3496 }
3497 }
3498
3499 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3500 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
3501 return;
3502 };
3503
3504 let thumb_bounds = scrollbar_layout.thumb_bounds();
3505 if scrollbar_layout.visible {
3506 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
3507 cx.paint_quad(quad(
3508 scrollbar_layout.hitbox.bounds,
3509 Corners::default(),
3510 cx.theme().colors().scrollbar_track_background,
3511 Edges {
3512 top: Pixels::ZERO,
3513 right: Pixels::ZERO,
3514 bottom: Pixels::ZERO,
3515 left: ScrollbarLayout::BORDER_WIDTH,
3516 },
3517 cx.theme().colors().scrollbar_track_border,
3518 ));
3519
3520 let fast_markers =
3521 self.collect_fast_scrollbar_markers(layout, scrollbar_layout, cx);
3522 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
3523 self.refresh_slow_scrollbar_markers(layout, scrollbar_layout, cx);
3524
3525 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
3526 for marker in markers.iter().chain(&fast_markers) {
3527 let mut marker = marker.clone();
3528 marker.bounds.origin += scrollbar_layout.hitbox.origin;
3529 cx.paint_quad(marker);
3530 }
3531
3532 cx.paint_quad(quad(
3533 thumb_bounds,
3534 Corners::default(),
3535 cx.theme().colors().scrollbar_thumb_background,
3536 Edges {
3537 top: Pixels::ZERO,
3538 right: Pixels::ZERO,
3539 bottom: Pixels::ZERO,
3540 left: ScrollbarLayout::BORDER_WIDTH,
3541 },
3542 cx.theme().colors().scrollbar_thumb_border,
3543 ));
3544 });
3545 }
3546
3547 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
3548
3549 let row_height = scrollbar_layout.row_height;
3550 let row_range = scrollbar_layout.visible_row_range.clone();
3551
3552 cx.on_mouse_event({
3553 let editor = self.editor.clone();
3554 let hitbox = scrollbar_layout.hitbox.clone();
3555 let mut mouse_position = cx.mouse_position();
3556 move |event: &MouseMoveEvent, phase, cx| {
3557 if phase == DispatchPhase::Capture {
3558 return;
3559 }
3560
3561 editor.update(cx, |editor, cx| {
3562 if event.pressed_button == Some(MouseButton::Left)
3563 && editor.scroll_manager.is_dragging_scrollbar()
3564 {
3565 let y = mouse_position.y;
3566 let new_y = event.position.y;
3567 if (hitbox.top()..hitbox.bottom()).contains(&y) {
3568 let mut position = editor.scroll_position(cx);
3569 position.y += (new_y - y) / row_height;
3570 if position.y < 0.0 {
3571 position.y = 0.0;
3572 }
3573 editor.set_scroll_position(position, cx);
3574 }
3575
3576 cx.stop_propagation();
3577 } else {
3578 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3579 if hitbox.is_hovered(cx) {
3580 editor.scroll_manager.show_scrollbar(cx);
3581 }
3582 }
3583 mouse_position = event.position;
3584 })
3585 }
3586 });
3587
3588 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
3589 cx.on_mouse_event({
3590 let editor = self.editor.clone();
3591 move |_: &MouseUpEvent, phase, cx| {
3592 if phase == DispatchPhase::Capture {
3593 return;
3594 }
3595
3596 editor.update(cx, |editor, cx| {
3597 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3598 cx.stop_propagation();
3599 });
3600 }
3601 });
3602 } else {
3603 cx.on_mouse_event({
3604 let editor = self.editor.clone();
3605 let hitbox = scrollbar_layout.hitbox.clone();
3606 move |event: &MouseDownEvent, phase, cx| {
3607 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
3608 return;
3609 }
3610
3611 editor.update(cx, |editor, cx| {
3612 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
3613
3614 let y = event.position.y;
3615 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
3616 let center_row = ((y - hitbox.top()) / row_height).round() as u32;
3617 let top_row = center_row
3618 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
3619 let mut position = editor.scroll_position(cx);
3620 position.y = top_row as f32;
3621 editor.set_scroll_position(position, cx);
3622 } else {
3623 editor.scroll_manager.show_scrollbar(cx);
3624 }
3625
3626 cx.stop_propagation();
3627 });
3628 }
3629 });
3630 }
3631 }
3632
3633 fn collect_fast_scrollbar_markers(
3634 &self,
3635 layout: &EditorLayout,
3636 scrollbar_layout: &ScrollbarLayout,
3637 cx: &mut WindowContext,
3638 ) -> Vec<PaintQuad> {
3639 const LIMIT: usize = 100;
3640 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
3641 return vec![];
3642 }
3643 let cursor_ranges = layout
3644 .cursors
3645 .iter()
3646 .map(|(point, color)| ColoredRange {
3647 start: point.row(),
3648 end: point.row(),
3649 color: *color,
3650 })
3651 .collect_vec();
3652 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
3653 }
3654
3655 fn refresh_slow_scrollbar_markers(
3656 &self,
3657 layout: &EditorLayout,
3658 scrollbar_layout: &ScrollbarLayout,
3659 cx: &mut WindowContext,
3660 ) {
3661 self.editor.update(cx, |editor, cx| {
3662 if !editor.is_singleton(cx)
3663 || !editor
3664 .scrollbar_marker_state
3665 .should_refresh(scrollbar_layout.hitbox.size)
3666 {
3667 return;
3668 }
3669
3670 let scrollbar_layout = scrollbar_layout.clone();
3671 let background_highlights = editor.background_highlights.clone();
3672 let snapshot = layout.position_map.snapshot.clone();
3673 let theme = cx.theme().clone();
3674 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
3675
3676 editor.scrollbar_marker_state.dirty = false;
3677 editor.scrollbar_marker_state.pending_refresh =
3678 Some(cx.spawn(|editor, mut cx| async move {
3679 let scrollbar_size = scrollbar_layout.hitbox.size;
3680 let scrollbar_markers = cx
3681 .background_executor()
3682 .spawn(async move {
3683 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
3684 let mut marker_quads = Vec::new();
3685 if scrollbar_settings.git_diff {
3686 let marker_row_ranges = snapshot
3687 .buffer_snapshot
3688 .git_diff_hunks_in_range(
3689 MultiBufferRow::MIN..MultiBufferRow::MAX,
3690 )
3691 .map(|hunk| {
3692 let start_display_row =
3693 MultiBufferPoint::new(hunk.associated_range.start.0, 0)
3694 .to_display_point(&snapshot.display_snapshot)
3695 .row();
3696 let mut end_display_row =
3697 MultiBufferPoint::new(hunk.associated_range.end.0, 0)
3698 .to_display_point(&snapshot.display_snapshot)
3699 .row();
3700 if end_display_row != start_display_row {
3701 end_display_row.0 -= 1;
3702 }
3703 let color = match hunk_status(&hunk) {
3704 DiffHunkStatus::Added => theme.status().created,
3705 DiffHunkStatus::Modified => theme.status().modified,
3706 DiffHunkStatus::Removed => theme.status().deleted,
3707 };
3708 ColoredRange {
3709 start: start_display_row,
3710 end: end_display_row,
3711 color,
3712 }
3713 });
3714
3715 marker_quads.extend(
3716 scrollbar_layout
3717 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
3718 );
3719 }
3720
3721 for (background_highlight_id, (_, background_ranges)) in
3722 background_highlights.iter()
3723 {
3724 let is_search_highlights = *background_highlight_id
3725 == TypeId::of::<BufferSearchHighlights>();
3726 let is_symbol_occurrences = *background_highlight_id
3727 == TypeId::of::<DocumentHighlightRead>()
3728 || *background_highlight_id
3729 == TypeId::of::<DocumentHighlightWrite>();
3730 if (is_search_highlights && scrollbar_settings.search_results)
3731 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
3732 {
3733 let mut color = theme.status().info;
3734 if is_symbol_occurrences {
3735 color.fade_out(0.5);
3736 }
3737 let marker_row_ranges =
3738 background_ranges.into_iter().map(|range| {
3739 let display_start = range
3740 .start
3741 .to_display_point(&snapshot.display_snapshot);
3742 let display_end = range
3743 .end
3744 .to_display_point(&snapshot.display_snapshot);
3745 ColoredRange {
3746 start: display_start.row(),
3747 end: display_end.row(),
3748 color,
3749 }
3750 });
3751 marker_quads.extend(
3752 scrollbar_layout
3753 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
3754 );
3755 }
3756 }
3757
3758 if scrollbar_settings.diagnostics {
3759 let diagnostics = snapshot
3760 .buffer_snapshot
3761 .diagnostics_in_range::<_, Point>(
3762 Point::zero()..max_point,
3763 false,
3764 )
3765 // We want to sort by severity, in order to paint the most severe diagnostics last.
3766 .sorted_by_key(|diagnostic| {
3767 std::cmp::Reverse(diagnostic.diagnostic.severity)
3768 });
3769
3770 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
3771 let start_display = diagnostic
3772 .range
3773 .start
3774 .to_display_point(&snapshot.display_snapshot);
3775 let end_display = diagnostic
3776 .range
3777 .end
3778 .to_display_point(&snapshot.display_snapshot);
3779 let color = match diagnostic.diagnostic.severity {
3780 DiagnosticSeverity::ERROR => theme.status().error,
3781 DiagnosticSeverity::WARNING => theme.status().warning,
3782 DiagnosticSeverity::INFORMATION => theme.status().info,
3783 _ => theme.status().hint,
3784 };
3785 ColoredRange {
3786 start: start_display.row(),
3787 end: end_display.row(),
3788 color,
3789 }
3790 });
3791 marker_quads.extend(
3792 scrollbar_layout
3793 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
3794 );
3795 }
3796
3797 Arc::from(marker_quads)
3798 })
3799 .await;
3800
3801 editor.update(&mut cx, |editor, cx| {
3802 editor.scrollbar_marker_state.markers = scrollbar_markers;
3803 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
3804 editor.scrollbar_marker_state.pending_refresh = None;
3805 cx.notify();
3806 })?;
3807
3808 Ok(())
3809 }));
3810 });
3811 }
3812
3813 #[allow(clippy::too_many_arguments)]
3814 fn paint_highlighted_range(
3815 &self,
3816 range: Range<DisplayPoint>,
3817 color: Hsla,
3818 corner_radius: Pixels,
3819 line_end_overshoot: Pixels,
3820 layout: &EditorLayout,
3821 cx: &mut WindowContext,
3822 ) {
3823 let start_row = layout.visible_display_row_range.start;
3824 let end_row = layout.visible_display_row_range.end;
3825 if range.start != range.end {
3826 let row_range = if range.end.column() == 0 {
3827 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3828 } else {
3829 cmp::max(range.start.row(), start_row)
3830 ..cmp::min(range.end.row().next_row(), end_row)
3831 };
3832
3833 let highlighted_range = HighlightedRange {
3834 color,
3835 line_height: layout.position_map.line_height,
3836 corner_radius,
3837 start_y: layout.content_origin.y
3838 + row_range.start.as_f32() * layout.position_map.line_height
3839 - layout.position_map.scroll_pixel_position.y,
3840 lines: row_range
3841 .iter_rows()
3842 .map(|row| {
3843 let line_layout =
3844 &layout.position_map.line_layouts[row.minus(start_row) as usize];
3845 HighlightedRangeLine {
3846 start_x: if row == range.start.row() {
3847 layout.content_origin.x
3848 + line_layout.x_for_index(range.start.column() as usize)
3849 - layout.position_map.scroll_pixel_position.x
3850 } else {
3851 layout.content_origin.x
3852 - layout.position_map.scroll_pixel_position.x
3853 },
3854 end_x: if row == range.end.row() {
3855 layout.content_origin.x
3856 + line_layout.x_for_index(range.end.column() as usize)
3857 - layout.position_map.scroll_pixel_position.x
3858 } else {
3859 layout.content_origin.x + line_layout.width + line_end_overshoot
3860 - layout.position_map.scroll_pixel_position.x
3861 },
3862 }
3863 })
3864 .collect(),
3865 };
3866
3867 highlighted_range.paint(layout.text_hitbox.bounds, cx);
3868 }
3869 }
3870
3871 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3872 if let Some(mut inline_blame) = layout.inline_blame.take() {
3873 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3874 inline_blame.paint(cx);
3875 })
3876 }
3877 }
3878
3879 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3880 for mut block in layout.blocks.drain(..) {
3881 block.element.paint(cx);
3882 }
3883 }
3884
3885 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3886 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
3887 mouse_context_menu.paint(cx);
3888 }
3889 }
3890
3891 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3892 cx.on_mouse_event({
3893 let position_map = layout.position_map.clone();
3894 let editor = self.editor.clone();
3895 let hitbox = layout.hitbox.clone();
3896 let mut delta = ScrollDelta::default();
3897
3898 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
3899 // accidentally turn off their scrolling.
3900 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
3901
3902 move |event: &ScrollWheelEvent, phase, cx| {
3903 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
3904 delta = delta.coalesce(event.delta);
3905 editor.update(cx, |editor, cx| {
3906 let position_map: &PositionMap = &position_map;
3907
3908 let line_height = position_map.line_height;
3909 let max_glyph_width = position_map.em_width;
3910 let (delta, axis) = match delta {
3911 gpui::ScrollDelta::Pixels(mut pixels) => {
3912 //Trackpad
3913 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
3914 (pixels, axis)
3915 }
3916
3917 gpui::ScrollDelta::Lines(lines) => {
3918 //Not trackpad
3919 let pixels =
3920 point(lines.x * max_glyph_width, lines.y * line_height);
3921 (pixels, None)
3922 }
3923 };
3924
3925 let current_scroll_position = position_map.snapshot.scroll_position();
3926 let x = (current_scroll_position.x * max_glyph_width
3927 - (delta.x * scroll_sensitivity))
3928 / max_glyph_width;
3929 let y = (current_scroll_position.y * line_height
3930 - (delta.y * scroll_sensitivity))
3931 / line_height;
3932 let mut scroll_position =
3933 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
3934 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
3935 if forbid_vertical_scroll {
3936 scroll_position.y = current_scroll_position.y;
3937 }
3938
3939 if scroll_position != current_scroll_position {
3940 editor.scroll(scroll_position, axis, cx);
3941 cx.stop_propagation();
3942 } else if y < 0. {
3943 // Due to clamping, we may fail to detect cases of overscroll to the top;
3944 // We want the scroll manager to get an update in such cases and detect the change of direction
3945 // on the next frame.
3946 cx.notify();
3947 }
3948 });
3949 }
3950 }
3951 });
3952 }
3953
3954 fn paint_mouse_listeners(
3955 &mut self,
3956 layout: &EditorLayout,
3957 hovered_hunk: Option<HoveredHunk>,
3958 cx: &mut WindowContext,
3959 ) {
3960 self.paint_scroll_wheel_listener(layout, cx);
3961
3962 cx.on_mouse_event({
3963 let position_map = layout.position_map.clone();
3964 let editor = self.editor.clone();
3965 let text_hitbox = layout.text_hitbox.clone();
3966 let gutter_hitbox = layout.gutter_hitbox.clone();
3967
3968 move |event: &MouseDownEvent, phase, cx| {
3969 if phase == DispatchPhase::Bubble {
3970 match event.button {
3971 MouseButton::Left => editor.update(cx, |editor, cx| {
3972 Self::mouse_left_down(
3973 editor,
3974 event,
3975 hovered_hunk.clone(),
3976 &position_map,
3977 &text_hitbox,
3978 &gutter_hitbox,
3979 cx,
3980 );
3981 }),
3982 MouseButton::Right => editor.update(cx, |editor, cx| {
3983 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
3984 }),
3985 MouseButton::Middle => editor.update(cx, |editor, cx| {
3986 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
3987 }),
3988 _ => {}
3989 };
3990 }
3991 }
3992 });
3993
3994 cx.on_mouse_event({
3995 let editor = self.editor.clone();
3996 let position_map = layout.position_map.clone();
3997 let text_hitbox = layout.text_hitbox.clone();
3998
3999 move |event: &MouseUpEvent, phase, cx| {
4000 if phase == DispatchPhase::Bubble {
4001 editor.update(cx, |editor, cx| {
4002 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
4003 });
4004 }
4005 }
4006 });
4007 cx.on_mouse_event({
4008 let position_map = layout.position_map.clone();
4009 let editor = self.editor.clone();
4010 let text_hitbox = layout.text_hitbox.clone();
4011 let gutter_hitbox = layout.gutter_hitbox.clone();
4012
4013 move |event: &MouseMoveEvent, phase, cx| {
4014 if phase == DispatchPhase::Bubble {
4015 editor.update(cx, |editor, cx| {
4016 if editor.hover_state.focused(cx) {
4017 return;
4018 }
4019 if event.pressed_button == Some(MouseButton::Left)
4020 || event.pressed_button == Some(MouseButton::Middle)
4021 {
4022 Self::mouse_dragged(
4023 editor,
4024 event,
4025 &position_map,
4026 text_hitbox.bounds,
4027 cx,
4028 )
4029 }
4030
4031 Self::mouse_moved(
4032 editor,
4033 event,
4034 &position_map,
4035 &text_hitbox,
4036 &gutter_hitbox,
4037 cx,
4038 )
4039 });
4040 }
4041 }
4042 });
4043 }
4044
4045 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
4046 bounds.upper_right().x - self.style.scrollbar_width
4047 }
4048
4049 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
4050 let style = &self.style;
4051 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4052 let layout = cx
4053 .text_system()
4054 .shape_line(
4055 SharedString::from(" ".repeat(column)),
4056 font_size,
4057 &[TextRun {
4058 len: column,
4059 font: style.text.font(),
4060 color: Hsla::default(),
4061 background_color: None,
4062 underline: None,
4063 strikethrough: None,
4064 }],
4065 )
4066 .unwrap();
4067
4068 layout.width
4069 }
4070
4071 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
4072 let digit_count = snapshot
4073 .max_buffer_row()
4074 .next_row()
4075 .as_f32()
4076 .log10()
4077 .floor() as usize
4078 + 1;
4079 self.column_pixels(digit_count, cx)
4080 }
4081
4082 #[allow(clippy::too_many_arguments)]
4083 fn layout_hunk_diff_close_indicators(
4084 &self,
4085 line_height: Pixels,
4086 scroll_pixel_position: gpui::Point<Pixels>,
4087 gutter_dimensions: &GutterDimensions,
4088 gutter_hitbox: &Hitbox,
4089 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4090 expanded_hunks_by_rows: HashMap<DisplayRow, ExpandedHunk>,
4091 cx: &mut WindowContext,
4092 ) -> Vec<AnyElement> {
4093 self.editor.update(cx, |editor, cx| {
4094 expanded_hunks_by_rows
4095 .into_iter()
4096 .map(|(display_row, hunk)| {
4097 let button = editor.close_hunk_diff_button(
4098 HoveredHunk {
4099 multi_buffer_range: hunk.hunk_range,
4100 status: hunk.status,
4101 diff_base_byte_range: hunk.diff_base_byte_range,
4102 },
4103 display_row,
4104 cx,
4105 );
4106
4107 prepaint_gutter_button(
4108 button,
4109 display_row,
4110 line_height,
4111 gutter_dimensions,
4112 scroll_pixel_position,
4113 gutter_hitbox,
4114 rows_with_hunk_bounds,
4115 cx,
4116 )
4117 })
4118 .collect()
4119 })
4120 }
4121}
4122
4123#[allow(clippy::too_many_arguments)]
4124fn prepaint_gutter_button(
4125 button: IconButton,
4126 row: DisplayRow,
4127 line_height: Pixels,
4128 gutter_dimensions: &GutterDimensions,
4129 scroll_pixel_position: gpui::Point<Pixels>,
4130 gutter_hitbox: &Hitbox,
4131 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4132 cx: &mut WindowContext<'_>,
4133) -> AnyElement {
4134 let mut button = button.into_any_element();
4135 let available_space = size(
4136 AvailableSpace::MinContent,
4137 AvailableSpace::Definite(line_height),
4138 );
4139 let indicator_size = button.layout_as_root(available_space, cx);
4140
4141 let blame_width = gutter_dimensions.git_blame_entries_width;
4142 let gutter_width = rows_with_hunk_bounds
4143 .get(&row)
4144 .map(|bounds| bounds.size.width);
4145 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
4146
4147 let mut x = left_offset;
4148 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
4149 - indicator_size.width
4150 - left_offset;
4151 x += available_width / 2.;
4152
4153 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
4154 y += (line_height - indicator_size.height) / 2.;
4155
4156 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
4157 button
4158}
4159
4160fn render_inline_blame_entry(
4161 blame: &gpui::Model<GitBlame>,
4162 blame_entry: BlameEntry,
4163 style: &EditorStyle,
4164 workspace: Option<WeakView<Workspace>>,
4165 cx: &mut WindowContext<'_>,
4166) -> AnyElement {
4167 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4168
4169 let author = blame_entry.author.as_deref().unwrap_or_default();
4170 let text = format!("{}, {}", author, relative_timestamp);
4171
4172 let details = blame.read(cx).details_for_entry(&blame_entry);
4173
4174 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
4175
4176 h_flex()
4177 .id("inline-blame")
4178 .w_full()
4179 .font_family(style.text.font().family)
4180 .text_color(cx.theme().status().hint)
4181 .line_height(style.text.line_height)
4182 .child(Icon::new(IconName::FileGit).color(Color::Hint))
4183 .child(text)
4184 .gap_2()
4185 .hoverable_tooltip(move |_| tooltip.clone().into())
4186 .into_any()
4187}
4188
4189fn render_blame_entry(
4190 ix: usize,
4191 blame: &gpui::Model<GitBlame>,
4192 blame_entry: BlameEntry,
4193 style: &EditorStyle,
4194 last_used_color: &mut Option<(PlayerColor, Oid)>,
4195 editor: View<Editor>,
4196 cx: &mut WindowContext<'_>,
4197) -> AnyElement {
4198 let mut sha_color = cx
4199 .theme()
4200 .players()
4201 .color_for_participant(blame_entry.sha.into());
4202 // If the last color we used is the same as the one we get for this line, but
4203 // the commit SHAs are different, then we try again to get a different color.
4204 match *last_used_color {
4205 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
4206 let index: u32 = blame_entry.sha.into();
4207 sha_color = cx.theme().players().color_for_participant(index + 1);
4208 }
4209 _ => {}
4210 };
4211 last_used_color.replace((sha_color, blame_entry.sha));
4212
4213 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4214
4215 let short_commit_id = blame_entry.sha.display_short();
4216
4217 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
4218 let name = util::truncate_and_trailoff(author_name, 20);
4219
4220 let details = blame.read(cx).details_for_entry(&blame_entry);
4221
4222 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
4223
4224 let tooltip = cx.new_view(|_| {
4225 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
4226 });
4227
4228 h_flex()
4229 .w_full()
4230 .font_family(style.text.font().family)
4231 .line_height(style.text.line_height)
4232 .id(("blame", ix))
4233 .children([
4234 div()
4235 .text_color(sha_color.cursor)
4236 .child(short_commit_id)
4237 .mr_2(),
4238 div()
4239 .w_full()
4240 .h_flex()
4241 .justify_between()
4242 .text_color(cx.theme().status().hint)
4243 .child(name)
4244 .child(relative_timestamp),
4245 ])
4246 .on_mouse_down(MouseButton::Right, {
4247 let blame_entry = blame_entry.clone();
4248 let details = details.clone();
4249 move |event, cx| {
4250 deploy_blame_entry_context_menu(
4251 &blame_entry,
4252 details.as_ref(),
4253 editor.clone(),
4254 event.position,
4255 cx,
4256 );
4257 }
4258 })
4259 .hover(|style| style.bg(cx.theme().colors().element_hover))
4260 .when_some(
4261 details.and_then(|details| details.permalink),
4262 |this, url| {
4263 let url = url.clone();
4264 this.cursor_pointer().on_click(move |_, cx| {
4265 cx.stop_propagation();
4266 cx.open_url(url.as_str())
4267 })
4268 },
4269 )
4270 .hoverable_tooltip(move |_| tooltip.clone().into())
4271 .into_any()
4272}
4273
4274fn deploy_blame_entry_context_menu(
4275 blame_entry: &BlameEntry,
4276 details: Option<&CommitDetails>,
4277 editor: View<Editor>,
4278 position: gpui::Point<Pixels>,
4279 cx: &mut WindowContext<'_>,
4280) {
4281 let context_menu = ContextMenu::build(cx, move |menu, _| {
4282 let sha = format!("{}", blame_entry.sha);
4283 menu.on_blur_subscription(Subscription::new(|| {}))
4284 .entry("Copy commit SHA", None, move |cx| {
4285 cx.write_to_clipboard(ClipboardItem::new(sha.clone()));
4286 })
4287 .when_some(
4288 details.and_then(|details| details.permalink.clone()),
4289 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
4290 )
4291 });
4292
4293 editor.update(cx, move |editor, cx| {
4294 editor.mouse_context_menu = Some(MouseContextMenu::pinned_to_screen(
4295 position,
4296 context_menu,
4297 cx,
4298 ));
4299 cx.notify();
4300 });
4301}
4302
4303#[derive(Debug)]
4304pub(crate) struct LineWithInvisibles {
4305 fragments: SmallVec<[LineFragment; 1]>,
4306 invisibles: Vec<Invisible>,
4307 len: usize,
4308 width: Pixels,
4309 font_size: Pixels,
4310}
4311
4312#[allow(clippy::large_enum_variant)]
4313enum LineFragment {
4314 Text(ShapedLine),
4315 Element {
4316 element: Option<AnyElement>,
4317 size: Size<Pixels>,
4318 len: usize,
4319 },
4320}
4321
4322impl fmt::Debug for LineFragment {
4323 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
4324 match self {
4325 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
4326 LineFragment::Element { size, len, .. } => f
4327 .debug_struct("Element")
4328 .field("size", size)
4329 .field("len", len)
4330 .finish(),
4331 }
4332 }
4333}
4334
4335impl LineWithInvisibles {
4336 fn from_chunks<'a>(
4337 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
4338 text_style: &TextStyle,
4339 max_line_len: usize,
4340 max_line_count: usize,
4341 line_number_layouts: &[Option<ShapedLine>],
4342 editor_mode: EditorMode,
4343 cx: &mut WindowContext,
4344 ) -> Vec<Self> {
4345 let mut layouts = Vec::with_capacity(max_line_count);
4346 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
4347 let mut line = String::new();
4348 let mut invisibles = Vec::new();
4349 let mut width = Pixels::ZERO;
4350 let mut len = 0;
4351 let mut styles = Vec::new();
4352 let mut non_whitespace_added = false;
4353 let mut row = 0;
4354 let mut line_exceeded_max_len = false;
4355 let font_size = text_style.font_size.to_pixels(cx.rem_size());
4356
4357 let ellipsis = SharedString::from("⋯");
4358
4359 for highlighted_chunk in chunks.chain([HighlightedChunk {
4360 text: "\n",
4361 style: None,
4362 is_tab: false,
4363 renderer: None,
4364 }]) {
4365 if let Some(renderer) = highlighted_chunk.renderer {
4366 if !line.is_empty() {
4367 let shaped_line = cx
4368 .text_system()
4369 .shape_line(line.clone().into(), font_size, &styles)
4370 .unwrap();
4371 width += shaped_line.width;
4372 len += shaped_line.len;
4373 fragments.push(LineFragment::Text(shaped_line));
4374 line.clear();
4375 styles.clear();
4376 }
4377
4378 let available_width = if renderer.constrain_width {
4379 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
4380 ellipsis.clone()
4381 } else {
4382 SharedString::from(Arc::from(highlighted_chunk.text))
4383 };
4384 let shaped_line = cx
4385 .text_system()
4386 .shape_line(
4387 chunk,
4388 font_size,
4389 &[text_style.to_run(highlighted_chunk.text.len())],
4390 )
4391 .unwrap();
4392 AvailableSpace::Definite(shaped_line.width)
4393 } else {
4394 AvailableSpace::MinContent
4395 };
4396
4397 let mut element = (renderer.render)(cx);
4398 let line_height = text_style.line_height_in_pixels(cx.rem_size());
4399 let size = element.layout_as_root(
4400 size(available_width, AvailableSpace::Definite(line_height)),
4401 cx,
4402 );
4403
4404 width += size.width;
4405 len += highlighted_chunk.text.len();
4406 fragments.push(LineFragment::Element {
4407 element: Some(element),
4408 size,
4409 len: highlighted_chunk.text.len(),
4410 });
4411 } else {
4412 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
4413 if ix > 0 {
4414 let shaped_line = cx
4415 .text_system()
4416 .shape_line(line.clone().into(), font_size, &styles)
4417 .unwrap();
4418 width += shaped_line.width;
4419 len += shaped_line.len;
4420 fragments.push(LineFragment::Text(shaped_line));
4421 layouts.push(Self {
4422 width: mem::take(&mut width),
4423 len: mem::take(&mut len),
4424 fragments: mem::take(&mut fragments),
4425 invisibles: std::mem::take(&mut invisibles),
4426 font_size,
4427 });
4428
4429 line.clear();
4430 styles.clear();
4431 row += 1;
4432 line_exceeded_max_len = false;
4433 non_whitespace_added = false;
4434 if row == max_line_count {
4435 return layouts;
4436 }
4437 }
4438
4439 if !line_chunk.is_empty() && !line_exceeded_max_len {
4440 let text_style = if let Some(style) = highlighted_chunk.style {
4441 Cow::Owned(text_style.clone().highlight(style))
4442 } else {
4443 Cow::Borrowed(text_style)
4444 };
4445
4446 if line.len() + line_chunk.len() > max_line_len {
4447 let mut chunk_len = max_line_len - line.len();
4448 while !line_chunk.is_char_boundary(chunk_len) {
4449 chunk_len -= 1;
4450 }
4451 line_chunk = &line_chunk[..chunk_len];
4452 line_exceeded_max_len = true;
4453 }
4454
4455 styles.push(TextRun {
4456 len: line_chunk.len(),
4457 font: text_style.font(),
4458 color: text_style.color,
4459 background_color: text_style.background_color,
4460 underline: text_style.underline,
4461 strikethrough: text_style.strikethrough,
4462 });
4463
4464 if editor_mode == EditorMode::Full {
4465 // Line wrap pads its contents with fake whitespaces,
4466 // avoid printing them
4467 let inside_wrapped_string = line_number_layouts
4468 .get(row)
4469 .and_then(|layout| layout.as_ref())
4470 .is_none();
4471 if highlighted_chunk.is_tab {
4472 if non_whitespace_added || !inside_wrapped_string {
4473 invisibles.push(Invisible::Tab {
4474 line_start_offset: line.len(),
4475 line_end_offset: line.len() + line_chunk.len(),
4476 });
4477 }
4478 } else {
4479 invisibles.extend(
4480 line_chunk
4481 .bytes()
4482 .enumerate()
4483 .filter(|(_, line_byte)| {
4484 let is_whitespace =
4485 (*line_byte as char).is_whitespace();
4486 non_whitespace_added |= !is_whitespace;
4487 is_whitespace
4488 && (non_whitespace_added || !inside_wrapped_string)
4489 })
4490 .map(|(whitespace_index, _)| Invisible::Whitespace {
4491 line_offset: line.len() + whitespace_index,
4492 }),
4493 )
4494 }
4495 }
4496
4497 line.push_str(line_chunk);
4498 }
4499 }
4500 }
4501 }
4502
4503 layouts
4504 }
4505
4506 fn prepaint(
4507 &mut self,
4508 line_height: Pixels,
4509 scroll_pixel_position: gpui::Point<Pixels>,
4510 row: DisplayRow,
4511 content_origin: gpui::Point<Pixels>,
4512 line_elements: &mut SmallVec<[AnyElement; 1]>,
4513 cx: &mut WindowContext,
4514 ) {
4515 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
4516 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
4517 for fragment in &mut self.fragments {
4518 match fragment {
4519 LineFragment::Text(line) => {
4520 fragment_origin.x += line.width;
4521 }
4522 LineFragment::Element { element, size, .. } => {
4523 let mut element = element
4524 .take()
4525 .expect("you can't prepaint LineWithInvisibles twice");
4526
4527 // Center the element vertically within the line.
4528 let mut element_origin = fragment_origin;
4529 element_origin.y += (line_height - size.height) / 2.;
4530 element.prepaint_at(element_origin, cx);
4531 line_elements.push(element);
4532
4533 fragment_origin.x += size.width;
4534 }
4535 }
4536 }
4537 }
4538
4539 fn draw(
4540 &self,
4541 layout: &EditorLayout,
4542 row: DisplayRow,
4543 content_origin: gpui::Point<Pixels>,
4544 whitespace_setting: ShowWhitespaceSetting,
4545 selection_ranges: &[Range<DisplayPoint>],
4546 cx: &mut WindowContext,
4547 ) {
4548 let line_height = layout.position_map.line_height;
4549 let line_y = line_height
4550 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
4551
4552 let mut fragment_origin =
4553 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
4554
4555 for fragment in &self.fragments {
4556 match fragment {
4557 LineFragment::Text(line) => {
4558 line.paint(fragment_origin, line_height, cx).log_err();
4559 fragment_origin.x += line.width;
4560 }
4561 LineFragment::Element { size, .. } => {
4562 fragment_origin.x += size.width;
4563 }
4564 }
4565 }
4566
4567 self.draw_invisibles(
4568 &selection_ranges,
4569 layout,
4570 content_origin,
4571 line_y,
4572 row,
4573 line_height,
4574 whitespace_setting,
4575 cx,
4576 );
4577 }
4578
4579 #[allow(clippy::too_many_arguments)]
4580 fn draw_invisibles(
4581 &self,
4582 selection_ranges: &[Range<DisplayPoint>],
4583 layout: &EditorLayout,
4584 content_origin: gpui::Point<Pixels>,
4585 line_y: Pixels,
4586 row: DisplayRow,
4587 line_height: Pixels,
4588 whitespace_setting: ShowWhitespaceSetting,
4589 cx: &mut WindowContext,
4590 ) {
4591 let extract_whitespace_info = |invisible: &Invisible| {
4592 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
4593 Invisible::Tab {
4594 line_start_offset,
4595 line_end_offset,
4596 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
4597 Invisible::Whitespace { line_offset } => {
4598 (*line_offset, line_offset + 1, &layout.space_invisible)
4599 }
4600 };
4601
4602 let x_offset = self.x_for_index(token_offset);
4603 let invisible_offset =
4604 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
4605 let origin = content_origin
4606 + gpui::point(
4607 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
4608 line_y,
4609 );
4610
4611 (
4612 [token_offset, token_end_offset],
4613 Box::new(move |cx: &mut WindowContext| {
4614 invisible_symbol.paint(origin, line_height, cx).log_err();
4615 }),
4616 )
4617 };
4618
4619 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
4620 match whitespace_setting {
4621 ShowWhitespaceSetting::None => return,
4622 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
4623 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
4624 let invisible_point = DisplayPoint::new(row, start as u32);
4625 if !selection_ranges
4626 .iter()
4627 .any(|region| region.start <= invisible_point && invisible_point < region.end)
4628 {
4629 return;
4630 }
4631
4632 paint(cx);
4633 }),
4634
4635 // For a whitespace to be on a boundary, any of the following conditions need to be met:
4636 // - It is a tab
4637 // - It is adjacent to an edge (start or end)
4638 // - It is adjacent to a whitespace (left or right)
4639 ShowWhitespaceSetting::Boundary => {
4640 // We'll need to keep track of the last invisible we've seen and then check if we are adjacent to it for some of
4641 // the above cases.
4642 // Note: We zip in the original `invisibles` to check for tab equality
4643 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
4644 for (([start, end], paint), invisible) in
4645 invisible_iter.zip_eq(self.invisibles.iter())
4646 {
4647 let should_render = match (&last_seen, invisible) {
4648 (_, Invisible::Tab { .. }) => true,
4649 (Some((_, last_end, _)), _) => *last_end == start,
4650 _ => false,
4651 };
4652
4653 if should_render || start == 0 || end == self.len {
4654 paint(cx);
4655
4656 // Since we are scanning from the left, we will skip over the first available whitespace that is part
4657 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
4658 if let Some((should_render_last, last_end, paint_last)) = last_seen {
4659 // Note that we need to make sure that the last one is actually adjacent
4660 if !should_render_last && last_end == start {
4661 paint_last(cx);
4662 }
4663 }
4664 }
4665
4666 // Manually render anything within a selection
4667 let invisible_point = DisplayPoint::new(row, start as u32);
4668 if selection_ranges.iter().any(|region| {
4669 region.start <= invisible_point && invisible_point < region.end
4670 }) {
4671 paint(cx);
4672 }
4673
4674 last_seen = Some((should_render, end, paint));
4675 }
4676 }
4677 };
4678 }
4679
4680 pub fn x_for_index(&self, index: usize) -> Pixels {
4681 let mut fragment_start_x = Pixels::ZERO;
4682 let mut fragment_start_index = 0;
4683
4684 for fragment in &self.fragments {
4685 match fragment {
4686 LineFragment::Text(shaped_line) => {
4687 let fragment_end_index = fragment_start_index + shaped_line.len;
4688 if index < fragment_end_index {
4689 return fragment_start_x
4690 + shaped_line.x_for_index(index - fragment_start_index);
4691 }
4692 fragment_start_x += shaped_line.width;
4693 fragment_start_index = fragment_end_index;
4694 }
4695 LineFragment::Element { len, size, .. } => {
4696 let fragment_end_index = fragment_start_index + len;
4697 if index < fragment_end_index {
4698 return fragment_start_x;
4699 }
4700 fragment_start_x += size.width;
4701 fragment_start_index = fragment_end_index;
4702 }
4703 }
4704 }
4705
4706 fragment_start_x
4707 }
4708
4709 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
4710 let mut fragment_start_x = Pixels::ZERO;
4711 let mut fragment_start_index = 0;
4712
4713 for fragment in &self.fragments {
4714 match fragment {
4715 LineFragment::Text(shaped_line) => {
4716 let fragment_end_x = fragment_start_x + shaped_line.width;
4717 if x < fragment_end_x {
4718 return Some(
4719 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
4720 );
4721 }
4722 fragment_start_x = fragment_end_x;
4723 fragment_start_index += shaped_line.len;
4724 }
4725 LineFragment::Element { len, size, .. } => {
4726 let fragment_end_x = fragment_start_x + size.width;
4727 if x < fragment_end_x {
4728 return Some(fragment_start_index);
4729 }
4730 fragment_start_index += len;
4731 fragment_start_x = fragment_end_x;
4732 }
4733 }
4734 }
4735
4736 None
4737 }
4738
4739 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
4740 let mut fragment_start_index = 0;
4741
4742 for fragment in &self.fragments {
4743 match fragment {
4744 LineFragment::Text(shaped_line) => {
4745 let fragment_end_index = fragment_start_index + shaped_line.len;
4746 if index < fragment_end_index {
4747 return shaped_line.font_id_for_index(index - fragment_start_index);
4748 }
4749 fragment_start_index = fragment_end_index;
4750 }
4751 LineFragment::Element { len, .. } => {
4752 let fragment_end_index = fragment_start_index + len;
4753 if index < fragment_end_index {
4754 return None;
4755 }
4756 fragment_start_index = fragment_end_index;
4757 }
4758 }
4759 }
4760
4761 None
4762 }
4763}
4764
4765#[derive(Debug, Clone, Copy, PartialEq, Eq)]
4766enum Invisible {
4767 /// A tab character
4768 ///
4769 /// A tab character is internally represented by spaces (configured by the user's tab width)
4770 /// aligned to the nearest column, so it's necessary to store the start and end offset for
4771 /// adjacency checks.
4772 Tab {
4773 line_start_offset: usize,
4774 line_end_offset: usize,
4775 },
4776 Whitespace {
4777 line_offset: usize,
4778 },
4779}
4780
4781impl EditorElement {
4782 /// Returns the rem size to use when rendering the [`EditorElement`].
4783 ///
4784 /// This allows UI elements to scale based on the `buffer_font_size`.
4785 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
4786 match self.editor.read(cx).mode {
4787 EditorMode::Full => {
4788 let buffer_font_size = self.style.text.font_size;
4789 match buffer_font_size {
4790 AbsoluteLength::Pixels(pixels) => {
4791 let rem_size_scale = {
4792 // Our default UI font size is 14px on a 16px base scale.
4793 // This means the default UI font size is 0.875rems.
4794 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
4795
4796 // We then determine the delta between a single rem and the default font
4797 // size scale.
4798 let default_font_size_delta = 1. - default_font_size_scale;
4799
4800 // Finally, we add this delta to 1rem to get the scale factor that
4801 // should be used to scale up the UI.
4802 1. + default_font_size_delta
4803 };
4804
4805 Some(pixels * rem_size_scale)
4806 }
4807 AbsoluteLength::Rems(rems) => {
4808 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
4809 }
4810 }
4811 }
4812 // We currently use single-line and auto-height editors in UI contexts,
4813 // so we don't want to scale everything with the buffer font size, as it
4814 // ends up looking off.
4815 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
4816 }
4817 }
4818}
4819
4820impl Element for EditorElement {
4821 type RequestLayoutState = ();
4822 type PrepaintState = EditorLayout;
4823
4824 fn id(&self) -> Option<ElementId> {
4825 None
4826 }
4827
4828 fn request_layout(
4829 &mut self,
4830 _: Option<&GlobalElementId>,
4831 cx: &mut WindowContext,
4832 ) -> (gpui::LayoutId, ()) {
4833 let rem_size = self.rem_size(cx);
4834 cx.with_rem_size(rem_size, |cx| {
4835 self.editor.update(cx, |editor, cx| {
4836 editor.set_style(self.style.clone(), cx);
4837
4838 let layout_id = match editor.mode {
4839 EditorMode::SingleLine { auto_width } => {
4840 let rem_size = cx.rem_size();
4841
4842 let height = self.style.text.line_height_in_pixels(rem_size);
4843 if auto_width {
4844 let editor_handle = cx.view().clone();
4845 let style = self.style.clone();
4846 cx.request_measured_layout(Style::default(), move |_, _, cx| {
4847 let editor_snapshot =
4848 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
4849 let line = Self::layout_lines(
4850 DisplayRow(0)..DisplayRow(1),
4851 &[],
4852 &editor_snapshot,
4853 &style,
4854 cx,
4855 )
4856 .pop()
4857 .unwrap();
4858
4859 let font_id = cx.text_system().resolve_font(&style.text.font());
4860 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4861 let em_width = cx
4862 .text_system()
4863 .typographic_bounds(font_id, font_size, 'm')
4864 .unwrap()
4865 .size
4866 .width;
4867
4868 size(line.width + em_width, height)
4869 })
4870 } else {
4871 let mut style = Style::default();
4872 style.size.height = height.into();
4873 style.size.width = relative(1.).into();
4874 cx.request_layout(style, None)
4875 }
4876 }
4877 EditorMode::AutoHeight { max_lines } => {
4878 let editor_handle = cx.view().clone();
4879 let max_line_number_width =
4880 self.max_line_number_width(&editor.snapshot(cx), cx);
4881 cx.request_measured_layout(
4882 Style::default(),
4883 move |known_dimensions, available_space, cx| {
4884 editor_handle
4885 .update(cx, |editor, cx| {
4886 compute_auto_height_layout(
4887 editor,
4888 max_lines,
4889 max_line_number_width,
4890 known_dimensions,
4891 available_space.width,
4892 cx,
4893 )
4894 })
4895 .unwrap_or_default()
4896 },
4897 )
4898 }
4899 EditorMode::Full => {
4900 let mut style = Style::default();
4901 style.size.width = relative(1.).into();
4902 style.size.height = relative(1.).into();
4903 cx.request_layout(style, None)
4904 }
4905 };
4906
4907 (layout_id, ())
4908 })
4909 })
4910 }
4911
4912 fn prepaint(
4913 &mut self,
4914 _: Option<&GlobalElementId>,
4915 bounds: Bounds<Pixels>,
4916 _: &mut Self::RequestLayoutState,
4917 cx: &mut WindowContext,
4918 ) -> Self::PrepaintState {
4919 let text_style = TextStyleRefinement {
4920 font_size: Some(self.style.text.font_size),
4921 line_height: Some(self.style.text.line_height),
4922 ..Default::default()
4923 };
4924 let focus_handle = self.editor.focus_handle(cx);
4925 cx.set_view_id(self.editor.entity_id());
4926 cx.set_focus_handle(&focus_handle);
4927
4928 let rem_size = self.rem_size(cx);
4929 cx.with_rem_size(rem_size, |cx| {
4930 cx.with_text_style(Some(text_style), |cx| {
4931 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
4932 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
4933 let style = self.style.clone();
4934
4935 let font_id = cx.text_system().resolve_font(&style.text.font());
4936 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4937 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4938 let em_width = cx
4939 .text_system()
4940 .typographic_bounds(font_id, font_size, 'm')
4941 .unwrap()
4942 .size
4943 .width;
4944 let em_advance = cx
4945 .text_system()
4946 .advance(font_id, font_size, 'm')
4947 .unwrap()
4948 .width;
4949
4950 let gutter_dimensions = snapshot.gutter_dimensions(
4951 font_id,
4952 font_size,
4953 em_width,
4954 self.max_line_number_width(&snapshot, cx),
4955 cx,
4956 );
4957 let text_width = bounds.size.width - gutter_dimensions.width;
4958
4959 let right_margin = if snapshot.mode == EditorMode::Full {
4960 EditorElement::SCROLLBAR_WIDTH
4961 } else {
4962 px(0.)
4963 };
4964 let overscroll = size(em_width + right_margin, px(0.));
4965
4966 snapshot = self.editor.update(cx, |editor, cx| {
4967 editor.last_bounds = Some(bounds);
4968 editor.gutter_dimensions = gutter_dimensions;
4969 editor.set_visible_line_count(bounds.size.height / line_height, cx);
4970
4971 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
4972 snapshot
4973 } else {
4974 let editor_width =
4975 text_width - gutter_dimensions.margin - overscroll.width - em_width;
4976 let wrap_width = match editor.soft_wrap_mode(cx) {
4977 SoftWrap::None => None,
4978 SoftWrap::PreferLine => {
4979 Some((MAX_LINE_LEN / 2) as f32 * em_advance)
4980 }
4981 SoftWrap::EditorWidth => Some(editor_width),
4982 SoftWrap::Column(column) => {
4983 Some(editor_width.min(column as f32 * em_advance))
4984 }
4985 };
4986
4987 if editor.set_wrap_width(wrap_width, cx) {
4988 editor.snapshot(cx)
4989 } else {
4990 snapshot
4991 }
4992 }
4993 });
4994
4995 let wrap_guides = self
4996 .editor
4997 .read(cx)
4998 .wrap_guides(cx)
4999 .iter()
5000 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
5001 .collect::<SmallVec<[_; 2]>>();
5002
5003 let hitbox = cx.insert_hitbox(bounds, false);
5004 let gutter_hitbox =
5005 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
5006 let text_hitbox = cx.insert_hitbox(
5007 Bounds {
5008 origin: gutter_hitbox.upper_right(),
5009 size: size(text_width, bounds.size.height),
5010 },
5011 false,
5012 );
5013 // Offset the content_bounds from the text_bounds by the gutter margin (which
5014 // is roughly half a character wide) to make hit testing work more like how we want.
5015 let content_origin =
5016 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
5017
5018 let height_in_lines = bounds.size.height / line_height;
5019 let max_row = snapshot.max_point().row().as_f32();
5020 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
5021 (max_row - height_in_lines + 1.).max(0.)
5022 } else {
5023 let settings = EditorSettings::get_global(cx);
5024 match settings.scroll_beyond_last_line {
5025 ScrollBeyondLastLine::OnePage => max_row,
5026 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
5027 ScrollBeyondLastLine::VerticalScrollMargin => {
5028 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
5029 .max(0.)
5030 }
5031 }
5032 };
5033
5034 let mut autoscroll_request = None;
5035 let mut autoscroll_containing_element = false;
5036 let mut autoscroll_horizontally = false;
5037 self.editor.update(cx, |editor, cx| {
5038 autoscroll_request = editor.autoscroll_request();
5039 autoscroll_containing_element =
5040 autoscroll_request.is_some() || editor.has_pending_selection();
5041 autoscroll_horizontally =
5042 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
5043 snapshot = editor.snapshot(cx);
5044 });
5045
5046 let mut scroll_position = snapshot.scroll_position();
5047 // The scroll position is a fractional point, the whole number of which represents
5048 // the top of the window in terms of display rows.
5049 let start_row = DisplayRow(scroll_position.y as u32);
5050 let max_row = snapshot.max_point().row();
5051 let end_row = cmp::min(
5052 (scroll_position.y + height_in_lines).ceil() as u32,
5053 max_row.next_row().0,
5054 );
5055 let end_row = DisplayRow(end_row);
5056
5057 let buffer_rows = snapshot
5058 .buffer_rows(start_row)
5059 .take((start_row..end_row).len())
5060 .collect::<Vec<_>>();
5061
5062 let start_anchor = if start_row == Default::default() {
5063 Anchor::min()
5064 } else {
5065 snapshot.buffer_snapshot.anchor_before(
5066 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
5067 )
5068 };
5069 let end_anchor = if end_row > max_row {
5070 Anchor::max()
5071 } else {
5072 snapshot.buffer_snapshot.anchor_before(
5073 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
5074 )
5075 };
5076
5077 let highlighted_rows = self
5078 .editor
5079 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
5080 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
5081 start_anchor..end_anchor,
5082 &snapshot.display_snapshot,
5083 cx.theme().colors(),
5084 );
5085 let highlighted_gutter_ranges =
5086 self.editor.read(cx).gutter_highlights_in_range(
5087 start_anchor..end_anchor,
5088 &snapshot.display_snapshot,
5089 cx,
5090 );
5091
5092 let redacted_ranges = self.editor.read(cx).redacted_ranges(
5093 start_anchor..end_anchor,
5094 &snapshot.display_snapshot,
5095 cx,
5096 );
5097
5098 let (selections, active_rows, newest_selection_head) = self.layout_selections(
5099 start_anchor,
5100 end_anchor,
5101 &snapshot,
5102 start_row,
5103 end_row,
5104 cx,
5105 );
5106
5107 let line_numbers = self.layout_line_numbers(
5108 start_row..end_row,
5109 buffer_rows.iter().copied(),
5110 &active_rows,
5111 newest_selection_head,
5112 &snapshot,
5113 cx,
5114 );
5115
5116 let mut gutter_fold_toggles =
5117 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5118 self.layout_gutter_fold_toggles(
5119 start_row..end_row,
5120 buffer_rows.iter().copied(),
5121 &active_rows,
5122 &snapshot,
5123 cx,
5124 )
5125 });
5126 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5127 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
5128 });
5129
5130 let display_hunks = self.layout_gutter_git_hunks(
5131 line_height,
5132 &gutter_hitbox,
5133 start_row..end_row,
5134 &snapshot,
5135 cx,
5136 );
5137
5138 let mut max_visible_line_width = Pixels::ZERO;
5139 let mut line_layouts = Self::layout_lines(
5140 start_row..end_row,
5141 &line_numbers,
5142 &snapshot,
5143 &self.style,
5144 cx,
5145 );
5146 for line_with_invisibles in &line_layouts {
5147 if line_with_invisibles.width > max_visible_line_width {
5148 max_visible_line_width = line_with_invisibles.width;
5149 }
5150 }
5151
5152 let longest_line_width =
5153 layout_line(snapshot.longest_row(), &snapshot, &style, cx).width;
5154 let mut scroll_width =
5155 longest_line_width.max(max_visible_line_width) + overscroll.width;
5156
5157 let blocks = cx.with_element_namespace("blocks", |cx| {
5158 self.render_blocks(
5159 start_row..end_row,
5160 &snapshot,
5161 &hitbox,
5162 &text_hitbox,
5163 &mut scroll_width,
5164 &gutter_dimensions,
5165 em_width,
5166 gutter_dimensions.full_width(),
5167 line_height,
5168 &line_layouts,
5169 cx,
5170 )
5171 });
5172 let mut blocks = match blocks {
5173 Ok(blocks) => blocks,
5174 Err(resized_blocks) => {
5175 self.editor.update(cx, |editor, cx| {
5176 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
5177 });
5178 return self.prepaint(None, bounds, &mut (), cx);
5179 }
5180 };
5181
5182 let start_buffer_row =
5183 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
5184 let end_buffer_row =
5185 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
5186
5187 let scroll_max = point(
5188 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5189 max_row.as_f32(),
5190 );
5191
5192 self.editor.update(cx, |editor, cx| {
5193 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5194
5195 let autoscrolled = if autoscroll_horizontally {
5196 editor.autoscroll_horizontally(
5197 start_row,
5198 text_hitbox.size.width,
5199 scroll_width,
5200 em_width,
5201 &line_layouts,
5202 cx,
5203 )
5204 } else {
5205 false
5206 };
5207
5208 if clamped || autoscrolled {
5209 snapshot = editor.snapshot(cx);
5210 scroll_position = snapshot.scroll_position();
5211 }
5212 });
5213
5214 let scroll_pixel_position = point(
5215 scroll_position.x * em_width,
5216 scroll_position.y * line_height,
5217 );
5218
5219 let indent_guides = self.layout_indent_guides(
5220 content_origin,
5221 text_hitbox.origin,
5222 start_buffer_row..end_buffer_row,
5223 scroll_pixel_position,
5224 line_height,
5225 &snapshot,
5226 cx,
5227 );
5228
5229 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5230 self.prepaint_crease_trailers(
5231 crease_trailers,
5232 &line_layouts,
5233 line_height,
5234 content_origin,
5235 scroll_pixel_position,
5236 em_width,
5237 cx,
5238 )
5239 });
5240
5241 let mut inline_blame = None;
5242 if let Some(newest_selection_head) = newest_selection_head {
5243 let display_row = newest_selection_head.row();
5244 if (start_row..end_row).contains(&display_row) {
5245 let line_ix = display_row.minus(start_row) as usize;
5246 let line_layout = &line_layouts[line_ix];
5247 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
5248 inline_blame = self.layout_inline_blame(
5249 display_row,
5250 &snapshot.display_snapshot,
5251 line_layout,
5252 crease_trailer_layout,
5253 em_width,
5254 content_origin,
5255 scroll_pixel_position,
5256 line_height,
5257 cx,
5258 );
5259 }
5260 }
5261
5262 let blamed_display_rows = self.layout_blame_entries(
5263 buffer_rows.into_iter(),
5264 em_width,
5265 scroll_position,
5266 line_height,
5267 &gutter_hitbox,
5268 gutter_dimensions.git_blame_entries_width,
5269 cx,
5270 );
5271
5272 let scroll_max = point(
5273 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5274 max_scroll_top,
5275 );
5276
5277 self.editor.update(cx, |editor, cx| {
5278 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5279
5280 let autoscrolled = if autoscroll_horizontally {
5281 editor.autoscroll_horizontally(
5282 start_row,
5283 text_hitbox.size.width,
5284 scroll_width,
5285 em_width,
5286 &line_layouts,
5287 cx,
5288 )
5289 } else {
5290 false
5291 };
5292
5293 if clamped || autoscrolled {
5294 snapshot = editor.snapshot(cx);
5295 scroll_position = snapshot.scroll_position();
5296 }
5297 });
5298
5299 let line_elements = self.prepaint_lines(
5300 start_row,
5301 &mut line_layouts,
5302 line_height,
5303 scroll_pixel_position,
5304 content_origin,
5305 cx,
5306 );
5307
5308 cx.with_element_namespace("blocks", |cx| {
5309 self.layout_blocks(
5310 &mut blocks,
5311 &hitbox,
5312 line_height,
5313 scroll_pixel_position,
5314 cx,
5315 );
5316 });
5317
5318 let cursors = self.collect_cursors(&snapshot, cx);
5319 let visible_row_range = start_row..end_row;
5320 let non_visible_cursors = cursors
5321 .iter()
5322 .any(move |c| !visible_row_range.contains(&c.0.row()));
5323
5324 let visible_cursors = self.layout_visible_cursors(
5325 &snapshot,
5326 &selections,
5327 start_row..end_row,
5328 &line_layouts,
5329 &text_hitbox,
5330 content_origin,
5331 scroll_position,
5332 scroll_pixel_position,
5333 line_height,
5334 em_width,
5335 autoscroll_containing_element,
5336 cx,
5337 );
5338
5339 let scrollbar_layout = self.layout_scrollbar(
5340 &snapshot,
5341 bounds,
5342 scroll_position,
5343 height_in_lines,
5344 non_visible_cursors,
5345 cx,
5346 );
5347
5348 let gutter_settings = EditorSettings::get_global(cx).gutter;
5349
5350 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
5351 editor
5352 .expanded_hunks
5353 .hunks(false)
5354 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
5355 .map(|expanded_hunk| {
5356 let start_row = expanded_hunk
5357 .hunk_range
5358 .start
5359 .to_display_point(&snapshot)
5360 .row();
5361 (start_row, expanded_hunk.clone())
5362 })
5363 .collect::<HashMap<_, _>>()
5364 });
5365
5366 let rows_with_hunk_bounds = display_hunks
5367 .iter()
5368 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
5369 .fold(
5370 HashMap::default(),
5371 |mut rows_with_hunk_bounds, (hunk, bounds)| {
5372 match hunk {
5373 DisplayDiffHunk::Folded { display_row } => {
5374 rows_with_hunk_bounds.insert(*display_row, bounds);
5375 }
5376 DisplayDiffHunk::Unfolded {
5377 display_row_range, ..
5378 } => {
5379 for display_row in display_row_range.iter_rows() {
5380 rows_with_hunk_bounds.insert(display_row, bounds);
5381 }
5382 }
5383 }
5384 rows_with_hunk_bounds
5385 },
5386 );
5387 let mut _context_menu_visible = false;
5388 let mut code_actions_indicator = None;
5389 if let Some(newest_selection_head) = newest_selection_head {
5390 if (start_row..end_row).contains(&newest_selection_head.row()) {
5391 _context_menu_visible = self.layout_context_menu(
5392 line_height,
5393 &hitbox,
5394 &text_hitbox,
5395 content_origin,
5396 start_row,
5397 scroll_pixel_position,
5398 &line_layouts,
5399 newest_selection_head,
5400 gutter_dimensions.width - gutter_dimensions.left_padding,
5401 cx,
5402 );
5403
5404 let show_code_actions = snapshot
5405 .show_code_actions
5406 .unwrap_or_else(|| gutter_settings.code_actions);
5407 if show_code_actions {
5408 let newest_selection_point =
5409 newest_selection_head.to_point(&snapshot.display_snapshot);
5410 let newest_selection_display_row =
5411 newest_selection_point.to_display_point(&snapshot).row();
5412 if !expanded_add_hunks_by_rows
5413 .contains_key(&newest_selection_display_row)
5414 {
5415 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
5416 MultiBufferRow(newest_selection_point.row),
5417 );
5418 if let Some((buffer, range)) = buffer {
5419 let buffer_id = buffer.remote_id();
5420 let row = range.start.row;
5421 let has_test_indicator = self
5422 .editor
5423 .read(cx)
5424 .tasks
5425 .contains_key(&(buffer_id, row));
5426
5427 if !has_test_indicator {
5428 code_actions_indicator = self
5429 .layout_code_actions_indicator(
5430 line_height,
5431 newest_selection_head,
5432 scroll_pixel_position,
5433 &gutter_dimensions,
5434 &gutter_hitbox,
5435 &rows_with_hunk_bounds,
5436 cx,
5437 );
5438 }
5439 }
5440 }
5441 }
5442 }
5443 }
5444
5445 let test_indicators = if gutter_settings.runnables {
5446 self.layout_run_indicators(
5447 line_height,
5448 scroll_pixel_position,
5449 &gutter_dimensions,
5450 &gutter_hitbox,
5451 &rows_with_hunk_bounds,
5452 &snapshot,
5453 cx,
5454 )
5455 } else {
5456 Vec::new()
5457 };
5458
5459 let close_indicators = self.layout_hunk_diff_close_indicators(
5460 line_height,
5461 scroll_pixel_position,
5462 &gutter_dimensions,
5463 &gutter_hitbox,
5464 &rows_with_hunk_bounds,
5465 expanded_add_hunks_by_rows,
5466 cx,
5467 );
5468
5469 self.layout_signature_help(
5470 &hitbox,
5471 content_origin,
5472 scroll_pixel_position,
5473 newest_selection_head,
5474 start_row,
5475 &line_layouts,
5476 line_height,
5477 em_width,
5478 cx,
5479 );
5480
5481 if !cx.has_active_drag() {
5482 self.layout_hover_popovers(
5483 &snapshot,
5484 &hitbox,
5485 &text_hitbox,
5486 start_row..end_row,
5487 content_origin,
5488 scroll_pixel_position,
5489 &line_layouts,
5490 line_height,
5491 em_width,
5492 cx,
5493 );
5494 }
5495
5496 let mouse_context_menu =
5497 self.layout_mouse_context_menu(&snapshot, start_row..end_row, cx);
5498
5499 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5500 self.prepaint_gutter_fold_toggles(
5501 &mut gutter_fold_toggles,
5502 line_height,
5503 &gutter_dimensions,
5504 gutter_settings,
5505 scroll_pixel_position,
5506 &gutter_hitbox,
5507 cx,
5508 )
5509 });
5510
5511 let invisible_symbol_font_size = font_size / 2.;
5512 let tab_invisible = cx
5513 .text_system()
5514 .shape_line(
5515 "→".into(),
5516 invisible_symbol_font_size,
5517 &[TextRun {
5518 len: "→".len(),
5519 font: self.style.text.font(),
5520 color: cx.theme().colors().editor_invisible,
5521 background_color: None,
5522 underline: None,
5523 strikethrough: None,
5524 }],
5525 )
5526 .unwrap();
5527 let space_invisible = cx
5528 .text_system()
5529 .shape_line(
5530 "•".into(),
5531 invisible_symbol_font_size,
5532 &[TextRun {
5533 len: "•".len(),
5534 font: self.style.text.font(),
5535 color: cx.theme().colors().editor_invisible,
5536 background_color: None,
5537 underline: None,
5538 strikethrough: None,
5539 }],
5540 )
5541 .unwrap();
5542
5543 EditorLayout {
5544 mode: snapshot.mode,
5545 position_map: Rc::new(PositionMap {
5546 size: bounds.size,
5547 scroll_pixel_position,
5548 scroll_max,
5549 line_layouts,
5550 line_height,
5551 em_width,
5552 em_advance,
5553 snapshot,
5554 }),
5555 visible_display_row_range: start_row..end_row,
5556 wrap_guides,
5557 indent_guides,
5558 hitbox,
5559 text_hitbox,
5560 gutter_hitbox,
5561 gutter_dimensions,
5562 display_hunks,
5563 content_origin,
5564 scrollbar_layout,
5565 active_rows,
5566 highlighted_rows,
5567 highlighted_ranges,
5568 highlighted_gutter_ranges,
5569 redacted_ranges,
5570 line_elements,
5571 line_numbers,
5572 blamed_display_rows,
5573 inline_blame,
5574 blocks,
5575 cursors,
5576 visible_cursors,
5577 selections,
5578 mouse_context_menu,
5579 test_indicators,
5580 close_indicators,
5581 code_actions_indicator,
5582 gutter_fold_toggles,
5583 crease_trailers,
5584 tab_invisible,
5585 space_invisible,
5586 }
5587 })
5588 })
5589 })
5590 }
5591
5592 fn paint(
5593 &mut self,
5594 _: Option<&GlobalElementId>,
5595 bounds: Bounds<gpui::Pixels>,
5596 _: &mut Self::RequestLayoutState,
5597 layout: &mut Self::PrepaintState,
5598 cx: &mut WindowContext,
5599 ) {
5600 let focus_handle = self.editor.focus_handle(cx);
5601 let key_context = self.editor.read(cx).key_context(cx);
5602 cx.set_key_context(key_context);
5603 cx.handle_input(
5604 &focus_handle,
5605 ElementInputHandler::new(bounds, self.editor.clone()),
5606 );
5607 self.register_actions(cx);
5608 self.register_key_listeners(cx, layout);
5609
5610 let text_style = TextStyleRefinement {
5611 font_size: Some(self.style.text.font_size),
5612 line_height: Some(self.style.text.line_height),
5613 ..Default::default()
5614 };
5615 let mouse_position = cx.mouse_position();
5616 let hovered_hunk = layout
5617 .display_hunks
5618 .iter()
5619 .find_map(|(hunk, hunk_hitbox)| match hunk {
5620 DisplayDiffHunk::Folded { .. } => None,
5621 DisplayDiffHunk::Unfolded {
5622 diff_base_byte_range,
5623 multi_buffer_range,
5624 status,
5625 ..
5626 } => {
5627 if hunk_hitbox
5628 .as_ref()
5629 .map(|hitbox| hitbox.contains(&mouse_position))
5630 .unwrap_or(false)
5631 {
5632 Some(HoveredHunk {
5633 status: *status,
5634 multi_buffer_range: multi_buffer_range.clone(),
5635 diff_base_byte_range: diff_base_byte_range.clone(),
5636 })
5637 } else {
5638 None
5639 }
5640 }
5641 });
5642 let rem_size = self.rem_size(cx);
5643 cx.with_rem_size(rem_size, |cx| {
5644 cx.with_text_style(Some(text_style), |cx| {
5645 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
5646 self.paint_mouse_listeners(layout, hovered_hunk, cx);
5647 self.paint_background(layout, cx);
5648 self.paint_indent_guides(layout, cx);
5649
5650 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5651 self.paint_blamed_display_rows(layout, cx);
5652 self.paint_line_numbers(layout, cx);
5653 }
5654
5655 self.paint_text(layout, cx);
5656
5657 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5658 self.paint_gutter_highlights(layout, cx);
5659 self.paint_gutter_indicators(layout, cx);
5660 }
5661
5662 if !layout.blocks.is_empty() {
5663 cx.with_element_namespace("blocks", |cx| {
5664 self.paint_blocks(layout, cx);
5665 });
5666 }
5667
5668 self.paint_scrollbar(layout, cx);
5669 self.paint_mouse_context_menu(layout, cx);
5670 });
5671 })
5672 })
5673 }
5674}
5675
5676pub(super) fn gutter_bounds(
5677 editor_bounds: Bounds<Pixels>,
5678 gutter_dimensions: GutterDimensions,
5679) -> Bounds<Pixels> {
5680 Bounds {
5681 origin: editor_bounds.origin,
5682 size: size(gutter_dimensions.width, editor_bounds.size.height),
5683 }
5684}
5685
5686impl IntoElement for EditorElement {
5687 type Element = Self;
5688
5689 fn into_element(self) -> Self::Element {
5690 self
5691 }
5692}
5693
5694pub struct EditorLayout {
5695 position_map: Rc<PositionMap>,
5696 hitbox: Hitbox,
5697 text_hitbox: Hitbox,
5698 gutter_hitbox: Hitbox,
5699 gutter_dimensions: GutterDimensions,
5700 content_origin: gpui::Point<Pixels>,
5701 scrollbar_layout: Option<ScrollbarLayout>,
5702 mode: EditorMode,
5703 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
5704 indent_guides: Option<Vec<IndentGuideLayout>>,
5705 visible_display_row_range: Range<DisplayRow>,
5706 active_rows: BTreeMap<DisplayRow, bool>,
5707 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
5708 line_elements: SmallVec<[AnyElement; 1]>,
5709 line_numbers: Vec<Option<ShapedLine>>,
5710 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
5711 blamed_display_rows: Option<Vec<AnyElement>>,
5712 inline_blame: Option<AnyElement>,
5713 blocks: Vec<BlockLayout>,
5714 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5715 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5716 redacted_ranges: Vec<Range<DisplayPoint>>,
5717 cursors: Vec<(DisplayPoint, Hsla)>,
5718 visible_cursors: Vec<CursorLayout>,
5719 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
5720 code_actions_indicator: Option<AnyElement>,
5721 test_indicators: Vec<AnyElement>,
5722 close_indicators: Vec<AnyElement>,
5723 gutter_fold_toggles: Vec<Option<AnyElement>>,
5724 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
5725 mouse_context_menu: Option<AnyElement>,
5726 tab_invisible: ShapedLine,
5727 space_invisible: ShapedLine,
5728}
5729
5730impl EditorLayout {
5731 fn line_end_overshoot(&self) -> Pixels {
5732 0.15 * self.position_map.line_height
5733 }
5734}
5735
5736struct ColoredRange<T> {
5737 start: T,
5738 end: T,
5739 color: Hsla,
5740}
5741
5742#[derive(Clone)]
5743struct ScrollbarLayout {
5744 hitbox: Hitbox,
5745 visible_row_range: Range<f32>,
5746 visible: bool,
5747 row_height: Pixels,
5748 thumb_height: Pixels,
5749}
5750
5751impl ScrollbarLayout {
5752 const BORDER_WIDTH: Pixels = px(1.0);
5753 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
5754 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
5755 const MIN_THUMB_HEIGHT: Pixels = px(20.0);
5756
5757 fn thumb_bounds(&self) -> Bounds<Pixels> {
5758 let thumb_top = self.y_for_row(self.visible_row_range.start);
5759 let thumb_bottom = thumb_top + self.thumb_height;
5760 Bounds::from_corners(
5761 point(self.hitbox.left(), thumb_top),
5762 point(self.hitbox.right(), thumb_bottom),
5763 )
5764 }
5765
5766 fn y_for_row(&self, row: f32) -> Pixels {
5767 self.hitbox.top() + row * self.row_height
5768 }
5769
5770 fn marker_quads_for_ranges(
5771 &self,
5772 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
5773 column: Option<usize>,
5774 ) -> Vec<PaintQuad> {
5775 struct MinMax {
5776 min: Pixels,
5777 max: Pixels,
5778 }
5779 let (x_range, height_limit) = if let Some(column) = column {
5780 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
5781 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
5782 let end = start + column_width;
5783 (
5784 Range { start, end },
5785 MinMax {
5786 min: Self::MIN_MARKER_HEIGHT,
5787 max: px(f32::MAX),
5788 },
5789 )
5790 } else {
5791 (
5792 Range {
5793 start: Self::BORDER_WIDTH,
5794 end: self.hitbox.size.width,
5795 },
5796 MinMax {
5797 min: Self::LINE_MARKER_HEIGHT,
5798 max: Self::LINE_MARKER_HEIGHT,
5799 },
5800 )
5801 };
5802
5803 let row_to_y = |row: DisplayRow| row.as_f32() * self.row_height;
5804 let mut pixel_ranges = row_ranges
5805 .into_iter()
5806 .map(|range| {
5807 let start_y = row_to_y(range.start);
5808 let end_y = row_to_y(range.end)
5809 + self.row_height.max(height_limit.min).min(height_limit.max);
5810 ColoredRange {
5811 start: start_y,
5812 end: end_y,
5813 color: range.color,
5814 }
5815 })
5816 .peekable();
5817
5818 let mut quads = Vec::new();
5819 while let Some(mut pixel_range) = pixel_ranges.next() {
5820 while let Some(next_pixel_range) = pixel_ranges.peek() {
5821 if pixel_range.end >= next_pixel_range.start - px(1.0)
5822 && pixel_range.color == next_pixel_range.color
5823 {
5824 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
5825 pixel_ranges.next();
5826 } else {
5827 break;
5828 }
5829 }
5830
5831 let bounds = Bounds::from_corners(
5832 point(x_range.start, pixel_range.start),
5833 point(x_range.end, pixel_range.end),
5834 );
5835 quads.push(quad(
5836 bounds,
5837 Corners::default(),
5838 pixel_range.color,
5839 Edges::default(),
5840 Hsla::transparent_black(),
5841 ));
5842 }
5843
5844 quads
5845 }
5846}
5847
5848struct CreaseTrailerLayout {
5849 element: AnyElement,
5850 bounds: Bounds<Pixels>,
5851}
5852
5853struct PositionMap {
5854 size: Size<Pixels>,
5855 line_height: Pixels,
5856 scroll_pixel_position: gpui::Point<Pixels>,
5857 scroll_max: gpui::Point<f32>,
5858 em_width: Pixels,
5859 em_advance: Pixels,
5860 line_layouts: Vec<LineWithInvisibles>,
5861 snapshot: EditorSnapshot,
5862}
5863
5864#[derive(Debug, Copy, Clone)]
5865pub struct PointForPosition {
5866 pub previous_valid: DisplayPoint,
5867 pub next_valid: DisplayPoint,
5868 pub exact_unclipped: DisplayPoint,
5869 pub column_overshoot_after_line_end: u32,
5870}
5871
5872impl PointForPosition {
5873 pub fn as_valid(&self) -> Option<DisplayPoint> {
5874 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
5875 Some(self.previous_valid)
5876 } else {
5877 None
5878 }
5879 }
5880}
5881
5882impl PositionMap {
5883 fn point_for_position(
5884 &self,
5885 text_bounds: Bounds<Pixels>,
5886 position: gpui::Point<Pixels>,
5887 ) -> PointForPosition {
5888 let scroll_position = self.snapshot.scroll_position();
5889 let position = position - text_bounds.origin;
5890 let y = position.y.max(px(0.)).min(self.size.height);
5891 let x = position.x + (scroll_position.x * self.em_width);
5892 let row = ((y / self.line_height) + scroll_position.y) as u32;
5893
5894 let (column, x_overshoot_after_line_end) = if let Some(line) = self
5895 .line_layouts
5896 .get(row as usize - scroll_position.y as usize)
5897 {
5898 if let Some(ix) = line.index_for_x(x) {
5899 (ix as u32, px(0.))
5900 } else {
5901 (line.len as u32, px(0.).max(x - line.width))
5902 }
5903 } else {
5904 (0, x)
5905 };
5906
5907 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
5908 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
5909 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
5910
5911 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
5912 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
5913 PointForPosition {
5914 previous_valid,
5915 next_valid,
5916 exact_unclipped,
5917 column_overshoot_after_line_end,
5918 }
5919 }
5920}
5921
5922struct BlockLayout {
5923 id: BlockId,
5924 row: Option<DisplayRow>,
5925 element: AnyElement,
5926 available_space: Size<AvailableSpace>,
5927 style: BlockStyle,
5928}
5929
5930fn layout_line(
5931 row: DisplayRow,
5932 snapshot: &EditorSnapshot,
5933 style: &EditorStyle,
5934 cx: &mut WindowContext,
5935) -> LineWithInvisibles {
5936 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
5937 LineWithInvisibles::from_chunks(chunks, &style.text, MAX_LINE_LEN, 1, &[], snapshot.mode, cx)
5938 .pop()
5939 .unwrap()
5940}
5941
5942#[derive(Debug)]
5943pub struct IndentGuideLayout {
5944 origin: gpui::Point<Pixels>,
5945 length: Pixels,
5946 single_indent_width: Pixels,
5947 depth: u32,
5948 active: bool,
5949 settings: IndentGuideSettings,
5950}
5951
5952pub struct CursorLayout {
5953 origin: gpui::Point<Pixels>,
5954 block_width: Pixels,
5955 line_height: Pixels,
5956 color: Hsla,
5957 shape: CursorShape,
5958 block_text: Option<ShapedLine>,
5959 cursor_name: Option<AnyElement>,
5960}
5961
5962#[derive(Debug)]
5963pub struct CursorName {
5964 string: SharedString,
5965 color: Hsla,
5966 is_top_row: bool,
5967}
5968
5969impl CursorLayout {
5970 pub fn new(
5971 origin: gpui::Point<Pixels>,
5972 block_width: Pixels,
5973 line_height: Pixels,
5974 color: Hsla,
5975 shape: CursorShape,
5976 block_text: Option<ShapedLine>,
5977 ) -> CursorLayout {
5978 CursorLayout {
5979 origin,
5980 block_width,
5981 line_height,
5982 color,
5983 shape,
5984 block_text,
5985 cursor_name: None,
5986 }
5987 }
5988
5989 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
5990 Bounds {
5991 origin: self.origin + origin,
5992 size: size(self.block_width, self.line_height),
5993 }
5994 }
5995
5996 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
5997 match self.shape {
5998 CursorShape::Bar => Bounds {
5999 origin: self.origin + origin,
6000 size: size(px(2.0), self.line_height),
6001 },
6002 CursorShape::Block | CursorShape::Hollow => Bounds {
6003 origin: self.origin + origin,
6004 size: size(self.block_width, self.line_height),
6005 },
6006 CursorShape::Underscore => Bounds {
6007 origin: self.origin
6008 + origin
6009 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
6010 size: size(self.block_width, px(2.0)),
6011 },
6012 }
6013 }
6014
6015 pub fn layout(
6016 &mut self,
6017 origin: gpui::Point<Pixels>,
6018 cursor_name: Option<CursorName>,
6019 cx: &mut WindowContext,
6020 ) {
6021 if let Some(cursor_name) = cursor_name {
6022 let bounds = self.bounds(origin);
6023 let text_size = self.line_height / 1.5;
6024
6025 let name_origin = if cursor_name.is_top_row {
6026 point(bounds.right() - px(1.), bounds.top())
6027 } else {
6028 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
6029 };
6030 let mut name_element = div()
6031 .bg(self.color)
6032 .text_size(text_size)
6033 .px_0p5()
6034 .line_height(text_size + px(2.))
6035 .text_color(cursor_name.color)
6036 .child(cursor_name.string.clone())
6037 .into_any_element();
6038
6039 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
6040
6041 self.cursor_name = Some(name_element);
6042 }
6043 }
6044
6045 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
6046 let bounds = self.bounds(origin);
6047
6048 //Draw background or border quad
6049 let cursor = if matches!(self.shape, CursorShape::Hollow) {
6050 outline(bounds, self.color)
6051 } else {
6052 fill(bounds, self.color)
6053 };
6054
6055 if let Some(name) = &mut self.cursor_name {
6056 name.paint(cx);
6057 }
6058
6059 cx.paint_quad(cursor);
6060
6061 if let Some(block_text) = &self.block_text {
6062 block_text
6063 .paint(self.origin + origin, self.line_height, cx)
6064 .log_err();
6065 }
6066 }
6067
6068 pub fn shape(&self) -> CursorShape {
6069 self.shape
6070 }
6071}
6072
6073#[derive(Debug)]
6074pub struct HighlightedRange {
6075 pub start_y: Pixels,
6076 pub line_height: Pixels,
6077 pub lines: Vec<HighlightedRangeLine>,
6078 pub color: Hsla,
6079 pub corner_radius: Pixels,
6080}
6081
6082#[derive(Debug)]
6083pub struct HighlightedRangeLine {
6084 pub start_x: Pixels,
6085 pub end_x: Pixels,
6086}
6087
6088impl HighlightedRange {
6089 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
6090 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
6091 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
6092 self.paint_lines(
6093 self.start_y + self.line_height,
6094 &self.lines[1..],
6095 bounds,
6096 cx,
6097 );
6098 } else {
6099 self.paint_lines(self.start_y, &self.lines, bounds, cx);
6100 }
6101 }
6102
6103 fn paint_lines(
6104 &self,
6105 start_y: Pixels,
6106 lines: &[HighlightedRangeLine],
6107 _bounds: Bounds<Pixels>,
6108 cx: &mut WindowContext,
6109 ) {
6110 if lines.is_empty() {
6111 return;
6112 }
6113
6114 let first_line = lines.first().unwrap();
6115 let last_line = lines.last().unwrap();
6116
6117 let first_top_left = point(first_line.start_x, start_y);
6118 let first_top_right = point(first_line.end_x, start_y);
6119
6120 let curve_height = point(Pixels::ZERO, self.corner_radius);
6121 let curve_width = |start_x: Pixels, end_x: Pixels| {
6122 let max = (end_x - start_x) / 2.;
6123 let width = if max < self.corner_radius {
6124 max
6125 } else {
6126 self.corner_radius
6127 };
6128
6129 point(width, Pixels::ZERO)
6130 };
6131
6132 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
6133 let mut path = gpui::Path::new(first_top_right - top_curve_width);
6134 path.curve_to(first_top_right + curve_height, first_top_right);
6135
6136 let mut iter = lines.iter().enumerate().peekable();
6137 while let Some((ix, line)) = iter.next() {
6138 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
6139
6140 if let Some((_, next_line)) = iter.peek() {
6141 let next_top_right = point(next_line.end_x, bottom_right.y);
6142
6143 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
6144 Ordering::Equal => {
6145 path.line_to(bottom_right);
6146 }
6147 Ordering::Less => {
6148 let curve_width = curve_width(next_top_right.x, bottom_right.x);
6149 path.line_to(bottom_right - curve_height);
6150 if self.corner_radius > Pixels::ZERO {
6151 path.curve_to(bottom_right - curve_width, bottom_right);
6152 }
6153 path.line_to(next_top_right + curve_width);
6154 if self.corner_radius > Pixels::ZERO {
6155 path.curve_to(next_top_right + curve_height, next_top_right);
6156 }
6157 }
6158 Ordering::Greater => {
6159 let curve_width = curve_width(bottom_right.x, next_top_right.x);
6160 path.line_to(bottom_right - curve_height);
6161 if self.corner_radius > Pixels::ZERO {
6162 path.curve_to(bottom_right + curve_width, bottom_right);
6163 }
6164 path.line_to(next_top_right - curve_width);
6165 if self.corner_radius > Pixels::ZERO {
6166 path.curve_to(next_top_right + curve_height, next_top_right);
6167 }
6168 }
6169 }
6170 } else {
6171 let curve_width = curve_width(line.start_x, line.end_x);
6172 path.line_to(bottom_right - curve_height);
6173 if self.corner_radius > Pixels::ZERO {
6174 path.curve_to(bottom_right - curve_width, bottom_right);
6175 }
6176
6177 let bottom_left = point(line.start_x, bottom_right.y);
6178 path.line_to(bottom_left + curve_width);
6179 if self.corner_radius > Pixels::ZERO {
6180 path.curve_to(bottom_left - curve_height, bottom_left);
6181 }
6182 }
6183 }
6184
6185 if first_line.start_x > last_line.start_x {
6186 let curve_width = curve_width(last_line.start_x, first_line.start_x);
6187 let second_top_left = point(last_line.start_x, start_y + self.line_height);
6188 path.line_to(second_top_left + curve_height);
6189 if self.corner_radius > Pixels::ZERO {
6190 path.curve_to(second_top_left + curve_width, second_top_left);
6191 }
6192 let first_bottom_left = point(first_line.start_x, second_top_left.y);
6193 path.line_to(first_bottom_left - curve_width);
6194 if self.corner_radius > Pixels::ZERO {
6195 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
6196 }
6197 }
6198
6199 path.line_to(first_top_left + curve_height);
6200 if self.corner_radius > Pixels::ZERO {
6201 path.curve_to(first_top_left + top_curve_width, first_top_left);
6202 }
6203 path.line_to(first_top_right - top_curve_width);
6204
6205 cx.paint_path(path, self.color);
6206 }
6207}
6208
6209pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6210 (delta.pow(1.5) / 100.0).into()
6211}
6212
6213fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6214 (delta.pow(1.2) / 300.0).into()
6215}
6216
6217#[cfg(test)]
6218mod tests {
6219 use super::*;
6220 use crate::{
6221 display_map::{BlockDisposition, BlockProperties},
6222 editor_tests::{init_test, update_test_language_settings},
6223 Editor, MultiBuffer,
6224 };
6225 use gpui::{TestAppContext, VisualTestContext};
6226 use language::language_settings;
6227 use log::info;
6228 use std::num::NonZeroU32;
6229 use ui::Context;
6230 use util::test::sample_text;
6231
6232 #[gpui::test]
6233 fn test_shape_line_numbers(cx: &mut TestAppContext) {
6234 init_test(cx, |_| {});
6235 let window = cx.add_window(|cx| {
6236 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6237 Editor::new(EditorMode::Full, buffer, None, true, cx)
6238 });
6239
6240 let editor = window.root(cx).unwrap();
6241 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6242 let element = EditorElement::new(&editor, style);
6243 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
6244
6245 let layouts = cx
6246 .update_window(*window, |_, cx| {
6247 element.layout_line_numbers(
6248 DisplayRow(0)..DisplayRow(6),
6249 (0..6).map(MultiBufferRow).map(Some),
6250 &Default::default(),
6251 Some(DisplayPoint::new(DisplayRow(0), 0)),
6252 &snapshot,
6253 cx,
6254 )
6255 })
6256 .unwrap();
6257 assert_eq!(layouts.len(), 6);
6258
6259 let relative_rows = window
6260 .update(cx, |editor, cx| {
6261 let snapshot = editor.snapshot(cx);
6262 element.calculate_relative_line_numbers(
6263 &snapshot,
6264 &(DisplayRow(0)..DisplayRow(6)),
6265 Some(DisplayRow(3)),
6266 )
6267 })
6268 .unwrap();
6269 assert_eq!(relative_rows[&DisplayRow(0)], 3);
6270 assert_eq!(relative_rows[&DisplayRow(1)], 2);
6271 assert_eq!(relative_rows[&DisplayRow(2)], 1);
6272 // current line has no relative number
6273 assert_eq!(relative_rows[&DisplayRow(4)], 1);
6274 assert_eq!(relative_rows[&DisplayRow(5)], 2);
6275
6276 // works if cursor is before screen
6277 let relative_rows = window
6278 .update(cx, |editor, cx| {
6279 let snapshot = editor.snapshot(cx);
6280 element.calculate_relative_line_numbers(
6281 &snapshot,
6282 &(DisplayRow(3)..DisplayRow(6)),
6283 Some(DisplayRow(1)),
6284 )
6285 })
6286 .unwrap();
6287 assert_eq!(relative_rows.len(), 3);
6288 assert_eq!(relative_rows[&DisplayRow(3)], 2);
6289 assert_eq!(relative_rows[&DisplayRow(4)], 3);
6290 assert_eq!(relative_rows[&DisplayRow(5)], 4);
6291
6292 // works if cursor is after screen
6293 let relative_rows = window
6294 .update(cx, |editor, cx| {
6295 let snapshot = editor.snapshot(cx);
6296 element.calculate_relative_line_numbers(
6297 &snapshot,
6298 &(DisplayRow(0)..DisplayRow(3)),
6299 Some(DisplayRow(6)),
6300 )
6301 })
6302 .unwrap();
6303 assert_eq!(relative_rows.len(), 3);
6304 assert_eq!(relative_rows[&DisplayRow(0)], 5);
6305 assert_eq!(relative_rows[&DisplayRow(1)], 4);
6306 assert_eq!(relative_rows[&DisplayRow(2)], 3);
6307 }
6308
6309 #[gpui::test]
6310 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
6311 init_test(cx, |_| {});
6312
6313 let window = cx.add_window(|cx| {
6314 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
6315 Editor::new(EditorMode::Full, buffer, None, true, cx)
6316 });
6317 let cx = &mut VisualTestContext::from_window(*window, cx);
6318 let editor = window.root(cx).unwrap();
6319 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6320
6321 window
6322 .update(cx, |editor, cx| {
6323 editor.cursor_shape = CursorShape::Block;
6324 editor.change_selections(None, cx, |s| {
6325 s.select_ranges([
6326 Point::new(0, 0)..Point::new(1, 0),
6327 Point::new(3, 2)..Point::new(3, 3),
6328 Point::new(5, 6)..Point::new(6, 0),
6329 ]);
6330 });
6331 })
6332 .unwrap();
6333
6334 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6335 EditorElement::new(&editor, style)
6336 });
6337
6338 assert_eq!(state.selections.len(), 1);
6339 let local_selections = &state.selections[0].1;
6340 assert_eq!(local_selections.len(), 3);
6341 // moves cursor back one line
6342 assert_eq!(
6343 local_selections[0].head,
6344 DisplayPoint::new(DisplayRow(0), 6)
6345 );
6346 assert_eq!(
6347 local_selections[0].range,
6348 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
6349 );
6350
6351 // moves cursor back one column
6352 assert_eq!(
6353 local_selections[1].range,
6354 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
6355 );
6356 assert_eq!(
6357 local_selections[1].head,
6358 DisplayPoint::new(DisplayRow(3), 2)
6359 );
6360
6361 // leaves cursor on the max point
6362 assert_eq!(
6363 local_selections[2].range,
6364 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
6365 );
6366 assert_eq!(
6367 local_selections[2].head,
6368 DisplayPoint::new(DisplayRow(6), 0)
6369 );
6370
6371 // active lines does not include 1 (even though the range of the selection does)
6372 assert_eq!(
6373 state.active_rows.keys().cloned().collect::<Vec<_>>(),
6374 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
6375 );
6376
6377 // multi-buffer support
6378 // in DisplayPoint coordinates, this is what we're dealing with:
6379 // 0: [[file
6380 // 1: header
6381 // 2: section]]
6382 // 3: aaaaaa
6383 // 4: bbbbbb
6384 // 5: cccccc
6385 // 6:
6386 // 7: [[footer]]
6387 // 8: [[header]]
6388 // 9: ffffff
6389 // 10: gggggg
6390 // 11: hhhhhh
6391 // 12:
6392 // 13: [[footer]]
6393 // 14: [[file
6394 // 15: header
6395 // 16: section]]
6396 // 17: bbbbbb
6397 // 18: cccccc
6398 // 19: dddddd
6399 // 20: [[footer]]
6400 let window = cx.add_window(|cx| {
6401 let buffer = MultiBuffer::build_multi(
6402 [
6403 (
6404 &(sample_text(8, 6, 'a') + "\n"),
6405 vec![
6406 Point::new(0, 0)..Point::new(3, 0),
6407 Point::new(4, 0)..Point::new(7, 0),
6408 ],
6409 ),
6410 (
6411 &(sample_text(8, 6, 'a') + "\n"),
6412 vec![Point::new(1, 0)..Point::new(3, 0)],
6413 ),
6414 ],
6415 cx,
6416 );
6417 Editor::new(EditorMode::Full, buffer, None, true, cx)
6418 });
6419 let editor = window.root(cx).unwrap();
6420 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6421 let _state = window.update(cx, |editor, cx| {
6422 editor.cursor_shape = CursorShape::Block;
6423 editor.change_selections(None, cx, |s| {
6424 s.select_display_ranges([
6425 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
6426 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
6427 ]);
6428 });
6429 });
6430
6431 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6432 EditorElement::new(&editor, style)
6433 });
6434 assert_eq!(state.selections.len(), 1);
6435 let local_selections = &state.selections[0].1;
6436 assert_eq!(local_selections.len(), 2);
6437
6438 // moves cursor on excerpt boundary back a line
6439 // and doesn't allow selection to bleed through
6440 assert_eq!(
6441 local_selections[0].range,
6442 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
6443 );
6444 assert_eq!(
6445 local_selections[0].head,
6446 DisplayPoint::new(DisplayRow(6), 0)
6447 );
6448 // moves cursor on buffer boundary back two lines
6449 // and doesn't allow selection to bleed through
6450 assert_eq!(
6451 local_selections[1].range,
6452 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
6453 );
6454 assert_eq!(
6455 local_selections[1].head,
6456 DisplayPoint::new(DisplayRow(12), 0)
6457 );
6458 }
6459
6460 #[gpui::test]
6461 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
6462 init_test(cx, |_| {});
6463
6464 let window = cx.add_window(|cx| {
6465 let buffer = MultiBuffer::build_simple("", cx);
6466 Editor::new(EditorMode::Full, buffer, None, true, cx)
6467 });
6468 let cx = &mut VisualTestContext::from_window(*window, cx);
6469 let editor = window.root(cx).unwrap();
6470 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6471 window
6472 .update(cx, |editor, cx| {
6473 editor.set_placeholder_text("hello", cx);
6474 editor.insert_blocks(
6475 [BlockProperties {
6476 style: BlockStyle::Fixed,
6477 disposition: BlockDisposition::Above,
6478 height: 3,
6479 position: Anchor::min(),
6480 render: Box::new(|cx| div().h(3. * cx.line_height()).into_any()),
6481 }],
6482 None,
6483 cx,
6484 );
6485
6486 // Blur the editor so that it displays placeholder text.
6487 cx.blur();
6488 })
6489 .unwrap();
6490
6491 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6492 EditorElement::new(&editor, style)
6493 });
6494 assert_eq!(state.position_map.line_layouts.len(), 4);
6495 assert_eq!(
6496 state
6497 .line_numbers
6498 .iter()
6499 .map(Option::is_some)
6500 .collect::<Vec<_>>(),
6501 &[false, false, false, true]
6502 );
6503 }
6504
6505 #[gpui::test]
6506 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
6507 const TAB_SIZE: u32 = 4;
6508
6509 let input_text = "\t \t|\t| a b";
6510 let expected_invisibles = vec![
6511 Invisible::Tab {
6512 line_start_offset: 0,
6513 line_end_offset: TAB_SIZE as usize,
6514 },
6515 Invisible::Whitespace {
6516 line_offset: TAB_SIZE as usize,
6517 },
6518 Invisible::Tab {
6519 line_start_offset: TAB_SIZE as usize + 1,
6520 line_end_offset: TAB_SIZE as usize * 2,
6521 },
6522 Invisible::Tab {
6523 line_start_offset: TAB_SIZE as usize * 2 + 1,
6524 line_end_offset: TAB_SIZE as usize * 3,
6525 },
6526 Invisible::Whitespace {
6527 line_offset: TAB_SIZE as usize * 3 + 1,
6528 },
6529 Invisible::Whitespace {
6530 line_offset: TAB_SIZE as usize * 3 + 3,
6531 },
6532 ];
6533 assert_eq!(
6534 expected_invisibles.len(),
6535 input_text
6536 .chars()
6537 .filter(|initial_char| initial_char.is_whitespace())
6538 .count(),
6539 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6540 );
6541
6542 init_test(cx, |s| {
6543 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6544 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
6545 });
6546
6547 let actual_invisibles =
6548 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
6549
6550 assert_eq!(expected_invisibles, actual_invisibles);
6551 }
6552
6553 #[gpui::test]
6554 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
6555 init_test(cx, |s| {
6556 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6557 s.defaults.tab_size = NonZeroU32::new(4);
6558 });
6559
6560 for editor_mode_without_invisibles in [
6561 EditorMode::SingleLine { auto_width: false },
6562 EditorMode::AutoHeight { max_lines: 100 },
6563 ] {
6564 let invisibles = collect_invisibles_from_new_editor(
6565 cx,
6566 editor_mode_without_invisibles,
6567 "\t\t\t| | a b",
6568 px(500.0),
6569 );
6570 assert!(invisibles.is_empty(),
6571 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
6572 }
6573 }
6574
6575 #[gpui::test]
6576 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
6577 let tab_size = 4;
6578 let input_text = "a\tbcd ".repeat(9);
6579 let repeated_invisibles = [
6580 Invisible::Tab {
6581 line_start_offset: 1,
6582 line_end_offset: tab_size as usize,
6583 },
6584 Invisible::Whitespace {
6585 line_offset: tab_size as usize + 3,
6586 },
6587 Invisible::Whitespace {
6588 line_offset: tab_size as usize + 4,
6589 },
6590 Invisible::Whitespace {
6591 line_offset: tab_size as usize + 5,
6592 },
6593 Invisible::Whitespace {
6594 line_offset: tab_size as usize + 6,
6595 },
6596 Invisible::Whitespace {
6597 line_offset: tab_size as usize + 7,
6598 },
6599 ];
6600 let expected_invisibles = std::iter::once(repeated_invisibles)
6601 .cycle()
6602 .take(9)
6603 .flatten()
6604 .collect::<Vec<_>>();
6605 assert_eq!(
6606 expected_invisibles.len(),
6607 input_text
6608 .chars()
6609 .filter(|initial_char| initial_char.is_whitespace())
6610 .count(),
6611 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6612 );
6613 info!("Expected invisibles: {expected_invisibles:?}");
6614
6615 init_test(cx, |_| {});
6616
6617 // Put the same string with repeating whitespace pattern into editors of various size,
6618 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
6619 let resize_step = 10.0;
6620 let mut editor_width = 200.0;
6621 while editor_width <= 1000.0 {
6622 update_test_language_settings(cx, |s| {
6623 s.defaults.tab_size = NonZeroU32::new(tab_size);
6624 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6625 s.defaults.preferred_line_length = Some(editor_width as u32);
6626 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
6627 });
6628
6629 let actual_invisibles = collect_invisibles_from_new_editor(
6630 cx,
6631 EditorMode::Full,
6632 &input_text,
6633 px(editor_width),
6634 );
6635
6636 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
6637 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
6638 let mut i = 0;
6639 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
6640 i = actual_index;
6641 match expected_invisibles.get(i) {
6642 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
6643 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
6644 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
6645 _ => {
6646 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
6647 }
6648 },
6649 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
6650 }
6651 }
6652 let missing_expected_invisibles = &expected_invisibles[i + 1..];
6653 assert!(
6654 missing_expected_invisibles.is_empty(),
6655 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
6656 );
6657
6658 editor_width += resize_step;
6659 }
6660 }
6661
6662 fn collect_invisibles_from_new_editor(
6663 cx: &mut TestAppContext,
6664 editor_mode: EditorMode,
6665 input_text: &str,
6666 editor_width: Pixels,
6667 ) -> Vec<Invisible> {
6668 info!(
6669 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
6670 editor_width.0
6671 );
6672 let window = cx.add_window(|cx| {
6673 let buffer = MultiBuffer::build_simple(&input_text, cx);
6674 Editor::new(editor_mode, buffer, None, true, cx)
6675 });
6676 let cx = &mut VisualTestContext::from_window(*window, cx);
6677 let editor = window.root(cx).unwrap();
6678 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6679 window
6680 .update(cx, |editor, cx| {
6681 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
6682 editor.set_wrap_width(Some(editor_width), cx);
6683 })
6684 .unwrap();
6685 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6686 EditorElement::new(&editor, style)
6687 });
6688 state
6689 .position_map
6690 .line_layouts
6691 .iter()
6692 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
6693 .cloned()
6694 .collect()
6695 }
6696}
6697
6698pub fn register_action<T: Action>(
6699 view: &View<Editor>,
6700 cx: &mut WindowContext,
6701 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
6702) {
6703 let view = view.clone();
6704 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
6705 let action = action.downcast_ref().unwrap();
6706 if phase == DispatchPhase::Bubble {
6707 view.update(cx, |editor, cx| {
6708 listener(editor, action, cx);
6709 })
6710 }
6711 })
6712}
6713
6714fn compute_auto_height_layout(
6715 editor: &mut Editor,
6716 max_lines: usize,
6717 max_line_number_width: Pixels,
6718 known_dimensions: Size<Option<Pixels>>,
6719 available_width: AvailableSpace,
6720 cx: &mut ViewContext<Editor>,
6721) -> Option<Size<Pixels>> {
6722 let width = known_dimensions.width.or_else(|| {
6723 if let AvailableSpace::Definite(available_width) = available_width {
6724 Some(available_width)
6725 } else {
6726 None
6727 }
6728 })?;
6729 if let Some(height) = known_dimensions.height {
6730 return Some(size(width, height));
6731 }
6732
6733 let style = editor.style.as_ref().unwrap();
6734 let font_id = cx.text_system().resolve_font(&style.text.font());
6735 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6736 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6737 let em_width = cx
6738 .text_system()
6739 .typographic_bounds(font_id, font_size, 'm')
6740 .unwrap()
6741 .size
6742 .width;
6743
6744 let mut snapshot = editor.snapshot(cx);
6745 let gutter_dimensions =
6746 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
6747
6748 editor.gutter_dimensions = gutter_dimensions;
6749 let text_width = width - gutter_dimensions.width;
6750 let overscroll = size(em_width, px(0.));
6751
6752 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
6753 if editor.set_wrap_width(Some(editor_width), cx) {
6754 snapshot = editor.snapshot(cx);
6755 }
6756
6757 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
6758 let height = scroll_height
6759 .max(line_height)
6760 .min(line_height * max_lines as f32);
6761
6762 Some(size(width, height))
6763}