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, HandleInput, HoveredCursor, HoveredHunk, LineDown, LineUp, OpenExcerpts, PageDown,
26 PageUp, Point, RangeToAnchorExt, RowExt, RowRangeExt, SelectPhase, Selection, SoftWrap,
27 ToPoint, 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::{
45 language_settings::{
46 IndentGuideBackgroundColoring, IndentGuideColoring, IndentGuideSettings,
47 ShowWhitespaceSetting,
48 },
49 ChunkRendererContext,
50};
51use lsp::DiagnosticSeverity;
52use multi_buffer::{Anchor, MultiBufferPoint, MultiBufferRow};
53use project::{
54 project_settings::{GitGutterSetting, ProjectSettings},
55 ProjectPath,
56};
57use settings::Settings;
58use smallvec::{smallvec, SmallVec};
59use std::{
60 any::TypeId,
61 borrow::Cow,
62 cmp::{self, Ordering},
63 fmt::{self, Write},
64 iter, mem,
65 ops::{Deref, Range},
66 rc::Rc,
67 sync::Arc,
68};
69use sum_tree::Bias;
70use theme::{ActiveTheme, PlayerColor};
71use ui::prelude::*;
72use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
73use util::RangeExt;
74use util::ResultExt;
75use workspace::{item::Item, Workspace};
76
77struct SelectionLayout {
78 head: DisplayPoint,
79 cursor_shape: CursorShape,
80 is_newest: bool,
81 is_local: bool,
82 range: Range<DisplayPoint>,
83 active_rows: Range<DisplayRow>,
84 user_name: Option<SharedString>,
85}
86
87impl SelectionLayout {
88 fn new<T: ToPoint + ToDisplayPoint + Clone>(
89 selection: Selection<T>,
90 line_mode: bool,
91 cursor_shape: CursorShape,
92 map: &DisplaySnapshot,
93 is_newest: bool,
94 is_local: bool,
95 user_name: Option<SharedString>,
96 ) -> Self {
97 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
98 let display_selection = point_selection.map(|p| p.to_display_point(map));
99 let mut range = display_selection.range();
100 let mut head = display_selection.head();
101 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
102 ..map.next_line_boundary(point_selection.end).1.row();
103
104 // vim visual line mode
105 if line_mode {
106 let point_range = map.expand_to_line(point_selection.range());
107 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
108 }
109
110 // any vim visual mode (including line mode)
111 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
112 && !range.is_empty()
113 && !selection.reversed
114 {
115 if head.column() > 0 {
116 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
117 } else if head.row().0 > 0 && head != map.max_point() {
118 head = map.clip_point(
119 DisplayPoint::new(
120 head.row().previous_row(),
121 map.line_len(head.row().previous_row()),
122 ),
123 Bias::Left,
124 );
125 // updating range.end is a no-op unless you're cursor is
126 // on the newline containing a multi-buffer divider
127 // in which case the clip_point may have moved the head up
128 // an additional row.
129 range.end = DisplayPoint::new(head.row().next_row(), 0);
130 active_rows.end = head.row();
131 }
132 }
133
134 Self {
135 head,
136 cursor_shape,
137 is_newest,
138 is_local,
139 range,
140 active_rows,
141 user_name,
142 }
143 }
144}
145
146pub struct EditorElement {
147 editor: View<Editor>,
148 style: EditorStyle,
149}
150
151type DisplayRowDelta = u32;
152
153impl EditorElement {
154 pub(crate) const SCROLLBAR_WIDTH: Pixels = px(13.);
155
156 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
157 Self {
158 editor: editor.clone(),
159 style,
160 }
161 }
162
163 fn register_actions(&self, cx: &mut WindowContext) {
164 let view = &self.editor;
165 view.update(cx, |editor, cx| {
166 for action in editor.editor_actions.borrow().values() {
167 (action)(cx)
168 }
169 });
170
171 crate::rust_analyzer_ext::apply_related_actions(view, cx);
172 crate::clangd_ext::apply_related_actions(view, cx);
173 register_action(view, cx, Editor::move_left);
174 register_action(view, cx, Editor::move_right);
175 register_action(view, cx, Editor::move_down);
176 register_action(view, cx, Editor::move_down_by_lines);
177 register_action(view, cx, Editor::select_down_by_lines);
178 register_action(view, cx, Editor::move_up);
179 register_action(view, cx, Editor::move_up_by_lines);
180 register_action(view, cx, Editor::select_up_by_lines);
181 register_action(view, cx, Editor::select_page_down);
182 register_action(view, cx, Editor::select_page_up);
183 register_action(view, cx, Editor::cancel);
184 register_action(view, cx, Editor::newline);
185 register_action(view, cx, Editor::newline_above);
186 register_action(view, cx, Editor::newline_below);
187 register_action(view, cx, Editor::backspace);
188 register_action(view, cx, Editor::delete);
189 register_action(view, cx, Editor::tab);
190 register_action(view, cx, Editor::tab_prev);
191 register_action(view, cx, Editor::indent);
192 register_action(view, cx, Editor::outdent);
193 register_action(view, cx, Editor::delete_line);
194 register_action(view, cx, Editor::join_lines);
195 register_action(view, cx, Editor::sort_lines_case_sensitive);
196 register_action(view, cx, Editor::sort_lines_case_insensitive);
197 register_action(view, cx, Editor::reverse_lines);
198 register_action(view, cx, Editor::shuffle_lines);
199 register_action(view, cx, Editor::convert_to_upper_case);
200 register_action(view, cx, Editor::convert_to_lower_case);
201 register_action(view, cx, Editor::convert_to_title_case);
202 register_action(view, cx, Editor::convert_to_snake_case);
203 register_action(view, cx, Editor::convert_to_kebab_case);
204 register_action(view, cx, Editor::convert_to_upper_camel_case);
205 register_action(view, cx, Editor::convert_to_lower_camel_case);
206 register_action(view, cx, Editor::convert_to_opposite_case);
207 register_action(view, cx, Editor::delete_to_previous_word_start);
208 register_action(view, cx, Editor::delete_to_previous_subword_start);
209 register_action(view, cx, Editor::delete_to_next_word_end);
210 register_action(view, cx, Editor::delete_to_next_subword_end);
211 register_action(view, cx, Editor::delete_to_beginning_of_line);
212 register_action(view, cx, Editor::delete_to_end_of_line);
213 register_action(view, cx, Editor::cut_to_end_of_line);
214 register_action(view, cx, Editor::duplicate_line_up);
215 register_action(view, cx, Editor::duplicate_line_down);
216 register_action(view, cx, Editor::move_line_up);
217 register_action(view, cx, Editor::move_line_down);
218 register_action(view, cx, Editor::transpose);
219 register_action(view, cx, Editor::cut);
220 register_action(view, cx, Editor::copy);
221 register_action(view, cx, Editor::paste);
222 register_action(view, cx, Editor::undo);
223 register_action(view, cx, Editor::redo);
224 register_action(view, cx, Editor::move_page_up);
225 register_action(view, cx, Editor::move_page_down);
226 register_action(view, cx, Editor::next_screen);
227 register_action(view, cx, Editor::scroll_cursor_top);
228 register_action(view, cx, Editor::scroll_cursor_center);
229 register_action(view, cx, Editor::scroll_cursor_bottom);
230 register_action(view, cx, Editor::scroll_cursor_center_top_bottom);
231 register_action(view, cx, |editor, _: &LineDown, cx| {
232 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
233 });
234 register_action(view, cx, |editor, _: &LineUp, cx| {
235 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
236 });
237 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
238 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
239 });
240 register_action(view, cx, |editor, HandleInput(text): &HandleInput, cx| {
241 if text.is_empty() {
242 return;
243 }
244 editor.handle_input(&text, cx);
245 });
246 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
247 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
248 });
249 register_action(view, cx, |editor, _: &PageDown, cx| {
250 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
251 });
252 register_action(view, cx, |editor, _: &PageUp, cx| {
253 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
254 });
255 register_action(view, cx, Editor::move_to_previous_word_start);
256 register_action(view, cx, Editor::move_to_previous_subword_start);
257 register_action(view, cx, Editor::move_to_next_word_end);
258 register_action(view, cx, Editor::move_to_next_subword_end);
259 register_action(view, cx, Editor::move_to_beginning_of_line);
260 register_action(view, cx, Editor::move_to_end_of_line);
261 register_action(view, cx, Editor::move_to_start_of_paragraph);
262 register_action(view, cx, Editor::move_to_end_of_paragraph);
263 register_action(view, cx, Editor::move_to_beginning);
264 register_action(view, cx, Editor::move_to_end);
265 register_action(view, cx, Editor::select_up);
266 register_action(view, cx, Editor::select_down);
267 register_action(view, cx, Editor::select_left);
268 register_action(view, cx, Editor::select_right);
269 register_action(view, cx, Editor::select_to_previous_word_start);
270 register_action(view, cx, Editor::select_to_previous_subword_start);
271 register_action(view, cx, Editor::select_to_next_word_end);
272 register_action(view, cx, Editor::select_to_next_subword_end);
273 register_action(view, cx, Editor::select_to_beginning_of_line);
274 register_action(view, cx, Editor::select_to_end_of_line);
275 register_action(view, cx, Editor::select_to_start_of_paragraph);
276 register_action(view, cx, Editor::select_to_end_of_paragraph);
277 register_action(view, cx, Editor::select_to_beginning);
278 register_action(view, cx, Editor::select_to_end);
279 register_action(view, cx, Editor::select_all);
280 register_action(view, cx, |editor, action, cx| {
281 editor.select_all_matches(action, cx).log_err();
282 });
283 register_action(view, cx, Editor::select_line);
284 register_action(view, cx, Editor::split_selection_into_lines);
285 register_action(view, cx, Editor::add_selection_above);
286 register_action(view, cx, Editor::add_selection_below);
287 register_action(view, cx, |editor, action, cx| {
288 editor.select_next(action, cx).log_err();
289 });
290 register_action(view, cx, |editor, action, cx| {
291 editor.select_previous(action, cx).log_err();
292 });
293 register_action(view, cx, Editor::toggle_comments);
294 register_action(view, cx, Editor::select_larger_syntax_node);
295 register_action(view, cx, Editor::select_smaller_syntax_node);
296 register_action(view, cx, Editor::select_enclosing_symbol);
297 register_action(view, cx, Editor::move_to_enclosing_bracket);
298 register_action(view, cx, Editor::undo_selection);
299 register_action(view, cx, Editor::redo_selection);
300 if !view.read(cx).is_singleton(cx) {
301 register_action(view, cx, Editor::expand_excerpts);
302 register_action(view, cx, Editor::expand_excerpts_up);
303 register_action(view, cx, Editor::expand_excerpts_down);
304 }
305 register_action(view, cx, Editor::go_to_diagnostic);
306 register_action(view, cx, Editor::go_to_prev_diagnostic);
307 register_action(view, cx, Editor::go_to_hunk);
308 register_action(view, cx, Editor::go_to_prev_hunk);
309 register_action(view, cx, |editor, a, cx| {
310 editor.go_to_definition(a, cx).detach_and_log_err(cx);
311 });
312 register_action(view, cx, |editor, a, cx| {
313 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
314 });
315 register_action(view, cx, |editor, a, cx| {
316 editor.go_to_declaration(a, cx).detach_and_log_err(cx);
317 });
318 register_action(view, cx, |editor, a, cx| {
319 editor.go_to_declaration_split(a, cx).detach_and_log_err(cx);
320 });
321 register_action(view, cx, |editor, a, cx| {
322 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
323 });
324 register_action(view, cx, |editor, a, cx| {
325 editor
326 .go_to_implementation_split(a, cx)
327 .detach_and_log_err(cx);
328 });
329 register_action(view, cx, |editor, a, cx| {
330 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
331 });
332 register_action(view, cx, |editor, a, cx| {
333 editor
334 .go_to_type_definition_split(a, cx)
335 .detach_and_log_err(cx);
336 });
337 register_action(view, cx, Editor::open_url);
338 register_action(view, cx, Editor::open_file);
339 register_action(view, cx, Editor::fold);
340 register_action(view, cx, Editor::fold_at);
341 register_action(view, cx, Editor::unfold_lines);
342 register_action(view, cx, Editor::unfold_at);
343 register_action(view, cx, Editor::fold_selected_ranges);
344 register_action(view, cx, Editor::show_completions);
345 register_action(view, cx, Editor::toggle_code_actions);
346 register_action(view, cx, Editor::open_excerpts);
347 register_action(view, cx, Editor::open_excerpts_in_split);
348 register_action(view, cx, Editor::toggle_soft_wrap);
349 register_action(view, cx, Editor::toggle_tab_bar);
350 register_action(view, cx, Editor::toggle_line_numbers);
351 register_action(view, cx, Editor::toggle_relative_line_numbers);
352 register_action(view, cx, Editor::toggle_indent_guides);
353 register_action(view, cx, Editor::toggle_inlay_hints);
354 register_action(view, cx, Editor::toggle_inline_completions);
355 register_action(view, cx, hover_popover::hover);
356 register_action(view, cx, Editor::reveal_in_finder);
357 register_action(view, cx, Editor::copy_path);
358 register_action(view, cx, Editor::copy_relative_path);
359 register_action(view, cx, Editor::copy_highlight_json);
360 register_action(view, cx, Editor::copy_permalink_to_line);
361 register_action(view, cx, Editor::open_permalink_to_line);
362 register_action(view, cx, Editor::copy_file_location);
363 register_action(view, cx, Editor::toggle_git_blame);
364 register_action(view, cx, Editor::toggle_git_blame_inline);
365 register_action(view, cx, Editor::toggle_hunk_diff);
366 register_action(view, cx, Editor::expand_all_hunk_diffs);
367 register_action(view, cx, |editor, action, cx| {
368 if let Some(task) = editor.format(action, cx) {
369 task.detach_and_log_err(cx);
370 } else {
371 cx.propagate();
372 }
373 });
374 register_action(view, cx, Editor::restart_language_server);
375 register_action(view, cx, Editor::cancel_language_server_work);
376 register_action(view, cx, Editor::show_character_palette);
377 register_action(view, cx, |editor, action, cx| {
378 if let Some(task) = editor.confirm_completion(action, cx) {
379 task.detach_and_log_err(cx);
380 } else {
381 cx.propagate();
382 }
383 });
384 register_action(view, cx, |editor, action, cx| {
385 if let Some(task) = editor.compose_completion(action, cx) {
386 task.detach_and_log_err(cx);
387 } else {
388 cx.propagate();
389 }
390 });
391 register_action(view, cx, |editor, action, cx| {
392 if let Some(task) = editor.confirm_code_action(action, cx) {
393 task.detach_and_log_err(cx);
394 } else {
395 cx.propagate();
396 }
397 });
398 register_action(view, cx, |editor, action, cx| {
399 if let Some(task) = editor.rename(action, cx) {
400 task.detach_and_log_err(cx);
401 } else {
402 cx.propagate();
403 }
404 });
405 register_action(view, cx, |editor, action, cx| {
406 if let Some(task) = editor.confirm_rename(action, cx) {
407 task.detach_and_log_err(cx);
408 } else {
409 cx.propagate();
410 }
411 });
412 register_action(view, cx, |editor, action, cx| {
413 if let Some(task) = editor.find_all_references(action, cx) {
414 task.detach_and_log_err(cx);
415 } else {
416 cx.propagate();
417 }
418 });
419 register_action(view, cx, Editor::show_signature_help);
420 register_action(view, cx, Editor::next_inline_completion);
421 register_action(view, cx, Editor::previous_inline_completion);
422 register_action(view, cx, Editor::show_inline_completion);
423 register_action(view, cx, Editor::context_menu_first);
424 register_action(view, cx, Editor::context_menu_prev);
425 register_action(view, cx, Editor::context_menu_next);
426 register_action(view, cx, Editor::context_menu_last);
427 register_action(view, cx, Editor::display_cursor_names);
428 register_action(view, cx, Editor::unique_lines_case_insensitive);
429 register_action(view, cx, Editor::unique_lines_case_sensitive);
430 register_action(view, cx, Editor::accept_partial_inline_completion);
431 register_action(view, cx, Editor::accept_inline_completion);
432 register_action(view, cx, Editor::revert_file);
433 register_action(view, cx, Editor::revert_selected_hunks);
434 register_action(view, cx, Editor::open_active_item_in_terminal)
435 }
436
437 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
438 let position_map = layout.position_map.clone();
439 cx.on_key_event({
440 let editor = self.editor.clone();
441 let text_hitbox = layout.text_hitbox.clone();
442 move |event: &ModifiersChangedEvent, phase, cx| {
443 if phase != DispatchPhase::Bubble {
444 return;
445 }
446 editor.update(cx, |editor, cx| {
447 if editor.hover_state.focused(cx) {
448 return;
449 }
450 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
451 })
452 }
453 });
454 }
455
456 fn modifiers_changed(
457 editor: &mut Editor,
458 event: &ModifiersChangedEvent,
459 position_map: &PositionMap,
460 text_hitbox: &Hitbox,
461 cx: &mut ViewContext<Editor>,
462 ) {
463 let mouse_position = cx.mouse_position();
464 if !text_hitbox.is_hovered(cx) {
465 return;
466 }
467
468 editor.update_hovered_link(
469 position_map.point_for_position(text_hitbox.bounds, mouse_position),
470 &position_map.snapshot,
471 event.modifiers,
472 cx,
473 )
474 }
475
476 fn mouse_left_down(
477 editor: &mut Editor,
478 event: &MouseDownEvent,
479 hovered_hunk: Option<HoveredHunk>,
480 position_map: &PositionMap,
481 text_hitbox: &Hitbox,
482 gutter_hitbox: &Hitbox,
483 cx: &mut ViewContext<Editor>,
484 ) {
485 if cx.default_prevented() {
486 return;
487 }
488
489 let mut click_count = event.click_count;
490 let mut modifiers = event.modifiers;
491
492 if let Some(hovered_hunk) = hovered_hunk {
493 if modifiers.control || modifiers.platform {
494 editor.toggle_hovered_hunk(&hovered_hunk, cx);
495 } else {
496 let display_range = hovered_hunk
497 .multi_buffer_range
498 .clone()
499 .to_display_points(&position_map.snapshot);
500 let hunk_bounds = Self::diff_hunk_bounds(
501 &position_map.snapshot,
502 position_map.line_height,
503 gutter_hitbox.bounds,
504 &DisplayDiffHunk::Unfolded {
505 diff_base_byte_range: hovered_hunk.diff_base_byte_range.clone(),
506 display_row_range: display_range.start.row()..display_range.end.row(),
507 multi_buffer_range: hovered_hunk.multi_buffer_range.clone(),
508 status: hovered_hunk.status,
509 },
510 );
511 if hunk_bounds.contains(&event.position) {
512 editor.open_hunk_context_menu(hovered_hunk, event.position, cx);
513 }
514 }
515 cx.notify();
516 return;
517 } else if gutter_hitbox.is_hovered(cx) {
518 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
519 } else if !text_hitbox.is_hovered(cx) {
520 return;
521 }
522
523 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
524 match EditorSettings::get_global(cx).double_click_in_multibuffer {
525 DoubleClickInMultibuffer::Select => {
526 // do nothing special on double click, all selection logic is below
527 }
528 DoubleClickInMultibuffer::Open => {
529 if modifiers.alt {
530 // if double click is made with alt, pretend it's a regular double click without opening and alt,
531 // and run the selection logic.
532 modifiers.alt = false;
533 } else {
534 // if double click is made without alt, open the corresponding excerp
535 editor.open_excerpts(&OpenExcerpts, cx);
536 return;
537 }
538 }
539 }
540 }
541
542 let point_for_position =
543 position_map.point_for_position(text_hitbox.bounds, event.position);
544 let position = point_for_position.previous_valid;
545 if modifiers.shift && modifiers.alt {
546 editor.select(
547 SelectPhase::BeginColumnar {
548 position,
549 reset: false,
550 goal_column: point_for_position.exact_unclipped.column(),
551 },
552 cx,
553 );
554 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
555 {
556 editor.select(
557 SelectPhase::Extend {
558 position,
559 click_count,
560 },
561 cx,
562 );
563 } else {
564 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
565 let multi_cursor_modifier = match multi_cursor_setting {
566 MultiCursorModifier::Alt => modifiers.alt,
567 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
568 };
569 editor.select(
570 SelectPhase::Begin {
571 position,
572 add: multi_cursor_modifier,
573 click_count,
574 },
575 cx,
576 );
577 }
578
579 cx.stop_propagation();
580 }
581
582 fn mouse_right_down(
583 editor: &mut Editor,
584 event: &MouseDownEvent,
585 position_map: &PositionMap,
586 text_hitbox: &Hitbox,
587 cx: &mut ViewContext<Editor>,
588 ) {
589 if !text_hitbox.is_hovered(cx) {
590 return;
591 }
592 let point_for_position =
593 position_map.point_for_position(text_hitbox.bounds, event.position);
594 mouse_context_menu::deploy_context_menu(
595 editor,
596 event.position,
597 point_for_position.previous_valid,
598 cx,
599 );
600 cx.stop_propagation();
601 }
602
603 fn mouse_middle_down(
604 editor: &mut Editor,
605 event: &MouseDownEvent,
606 position_map: &PositionMap,
607 text_hitbox: &Hitbox,
608 cx: &mut ViewContext<Editor>,
609 ) {
610 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
611 return;
612 }
613
614 let point_for_position =
615 position_map.point_for_position(text_hitbox.bounds, event.position);
616 let position = point_for_position.previous_valid;
617
618 editor.select(
619 SelectPhase::BeginColumnar {
620 position,
621 reset: true,
622 goal_column: point_for_position.exact_unclipped.column(),
623 },
624 cx,
625 );
626 }
627
628 fn mouse_up(
629 editor: &mut Editor,
630 event: &MouseUpEvent,
631 position_map: &PositionMap,
632 text_hitbox: &Hitbox,
633 cx: &mut ViewContext<Editor>,
634 ) {
635 let end_selection = editor.has_pending_selection();
636 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
637
638 if end_selection {
639 editor.select(SelectPhase::End, cx);
640 }
641
642 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
643 let multi_cursor_modifier = match multi_cursor_setting {
644 MultiCursorModifier::Alt => event.modifiers.secondary(),
645 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
646 };
647
648 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
649 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
650 editor.handle_click_hovered_link(point, event.modifiers, cx);
651
652 cx.stop_propagation();
653 } else if end_selection && pending_nonempty_selections {
654 cx.stop_propagation();
655 } else if cfg!(target_os = "linux") && event.button == MouseButton::Middle {
656 if !text_hitbox.is_hovered(cx) || editor.read_only(cx) {
657 return;
658 }
659
660 #[cfg(target_os = "linux")]
661 if EditorSettings::get_global(cx).middle_click_paste {
662 if let Some(text) = cx.read_from_primary().and_then(|item| item.text()) {
663 let point_for_position =
664 position_map.point_for_position(text_hitbox.bounds, event.position);
665 let position = point_for_position.previous_valid;
666
667 editor.select(
668 SelectPhase::Begin {
669 position,
670 add: false,
671 click_count: 1,
672 },
673 cx,
674 );
675 editor.insert(&text, cx);
676 }
677 cx.stop_propagation()
678 }
679 }
680 }
681
682 fn mouse_dragged(
683 editor: &mut Editor,
684 event: &MouseMoveEvent,
685 position_map: &PositionMap,
686 text_bounds: Bounds<Pixels>,
687 cx: &mut ViewContext<Editor>,
688 ) {
689 if !editor.has_pending_selection() {
690 return;
691 }
692
693 let point_for_position = position_map.point_for_position(text_bounds, event.position);
694 let mut scroll_delta = gpui::Point::<f32>::default();
695 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
696 let top = text_bounds.origin.y + vertical_margin;
697 let bottom = text_bounds.lower_left().y - vertical_margin;
698 if event.position.y < top {
699 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
700 }
701 if event.position.y > bottom {
702 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
703 }
704
705 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
706 let left = text_bounds.origin.x + horizontal_margin;
707 let right = text_bounds.upper_right().x - horizontal_margin;
708 if event.position.x < left {
709 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
710 }
711 if event.position.x > right {
712 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
713 }
714
715 editor.select(
716 SelectPhase::Update {
717 position: point_for_position.previous_valid,
718 goal_column: point_for_position.exact_unclipped.column(),
719 scroll_delta,
720 },
721 cx,
722 );
723 }
724
725 fn mouse_moved(
726 editor: &mut Editor,
727 event: &MouseMoveEvent,
728 position_map: &PositionMap,
729 text_hitbox: &Hitbox,
730 gutter_hitbox: &Hitbox,
731 cx: &mut ViewContext<Editor>,
732 ) {
733 let modifiers = event.modifiers;
734 let gutter_hovered = gutter_hitbox.is_hovered(cx);
735 editor.set_gutter_hovered(gutter_hovered, cx);
736
737 // Don't trigger hover popover if mouse is hovering over context menu
738 if text_hitbox.is_hovered(cx) {
739 let point_for_position =
740 position_map.point_for_position(text_hitbox.bounds, event.position);
741
742 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
743
744 if let Some(point) = point_for_position.as_valid() {
745 let anchor = position_map
746 .snapshot
747 .buffer_snapshot
748 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
749 hover_at(editor, Some(anchor), cx);
750 Self::update_visible_cursor(editor, point, position_map, cx);
751 } else {
752 hover_at(editor, None, cx);
753 }
754 } else {
755 editor.hide_hovered_link(cx);
756 hover_at(editor, None, cx);
757 if gutter_hovered {
758 cx.stop_propagation();
759 }
760 }
761 }
762
763 fn update_visible_cursor(
764 editor: &mut Editor,
765 point: DisplayPoint,
766 position_map: &PositionMap,
767 cx: &mut ViewContext<Editor>,
768 ) {
769 let snapshot = &position_map.snapshot;
770 let Some(hub) = editor.collaboration_hub() else {
771 return;
772 };
773 let start = snapshot.display_snapshot.clip_point(
774 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
775 Bias::Left,
776 );
777 let end = snapshot.display_snapshot.clip_point(
778 DisplayPoint::new(
779 point.row(),
780 (point.column() + 1).min(snapshot.line_len(point.row())),
781 ),
782 Bias::Right,
783 );
784
785 let range = snapshot
786 .buffer_snapshot
787 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
788 ..snapshot
789 .buffer_snapshot
790 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
791
792 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
793 return;
794 };
795 let key = crate::HoveredCursor {
796 replica_id: selection.replica_id,
797 selection_id: selection.selection.id,
798 };
799 editor.hovered_cursors.insert(
800 key.clone(),
801 cx.spawn(|editor, mut cx| async move {
802 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
803 editor
804 .update(&mut cx, |editor, cx| {
805 editor.hovered_cursors.remove(&key);
806 cx.notify();
807 })
808 .ok();
809 }),
810 );
811 cx.notify()
812 }
813
814 fn layout_selections(
815 &self,
816 start_anchor: Anchor,
817 end_anchor: Anchor,
818 snapshot: &EditorSnapshot,
819 start_row: DisplayRow,
820 end_row: DisplayRow,
821 cx: &mut WindowContext,
822 ) -> (
823 Vec<(PlayerColor, Vec<SelectionLayout>)>,
824 BTreeMap<DisplayRow, bool>,
825 Option<DisplayPoint>,
826 ) {
827 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
828 let mut active_rows = BTreeMap::new();
829 let mut newest_selection_head = None;
830 let editor = self.editor.read(cx);
831
832 if editor.show_local_selections {
833 let mut local_selections: Vec<Selection<Point>> = editor
834 .selections
835 .disjoint_in_range(start_anchor..end_anchor, cx);
836 local_selections.extend(editor.selections.pending(cx));
837 let mut layouts = Vec::new();
838 let newest = editor.selections.newest(cx);
839 for selection in local_selections.drain(..) {
840 let is_empty = selection.start == selection.end;
841 let is_newest = selection == newest;
842
843 let layout = SelectionLayout::new(
844 selection,
845 editor.selections.line_mode,
846 editor.cursor_shape,
847 &snapshot.display_snapshot,
848 is_newest,
849 editor.leader_peer_id.is_none(),
850 None,
851 );
852 if is_newest {
853 newest_selection_head = Some(layout.head);
854 }
855
856 for row in cmp::max(layout.active_rows.start.0, start_row.0)
857 ..=cmp::min(layout.active_rows.end.0, end_row.0)
858 {
859 let contains_non_empty_selection =
860 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
861 *contains_non_empty_selection |= !is_empty;
862 }
863 layouts.push(layout);
864 }
865
866 let player = if editor.read_only(cx) {
867 cx.theme().players().read_only()
868 } else {
869 self.style.local_player
870 };
871
872 selections.push((player, layouts));
873 }
874
875 if let Some(collaboration_hub) = &editor.collaboration_hub {
876 // When following someone, render the local selections in their color.
877 if let Some(leader_id) = editor.leader_peer_id {
878 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
879 if let Some(participant_index) = collaboration_hub
880 .user_participant_indices(cx)
881 .get(&collaborator.user_id)
882 {
883 if let Some((local_selection_style, _)) = selections.first_mut() {
884 *local_selection_style = cx
885 .theme()
886 .players()
887 .color_for_participant(participant_index.0);
888 }
889 }
890 }
891 }
892
893 let mut remote_selections = HashMap::default();
894 for selection in snapshot.remote_selections_in_range(
895 &(start_anchor..end_anchor),
896 collaboration_hub.as_ref(),
897 cx,
898 ) {
899 let selection_style = Self::get_participant_color(selection.participant_index, cx);
900
901 // Don't re-render the leader's selections, since the local selections
902 // match theirs.
903 if Some(selection.peer_id) == editor.leader_peer_id {
904 continue;
905 }
906 let key = HoveredCursor {
907 replica_id: selection.replica_id,
908 selection_id: selection.selection.id,
909 };
910
911 let is_shown =
912 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
913
914 remote_selections
915 .entry(selection.replica_id)
916 .or_insert((selection_style, Vec::new()))
917 .1
918 .push(SelectionLayout::new(
919 selection.selection,
920 selection.line_mode,
921 selection.cursor_shape,
922 &snapshot.display_snapshot,
923 false,
924 false,
925 if is_shown { selection.user_name } else { None },
926 ));
927 }
928
929 selections.extend(remote_selections.into_values());
930 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
931 let player = if editor.read_only(cx) {
932 cx.theme().players().read_only()
933 } else {
934 self.style.local_player
935 };
936 let layouts = snapshot
937 .buffer_snapshot
938 .selections_in_range(&(start_anchor..end_anchor), true)
939 .map(move |(_, line_mode, cursor_shape, selection)| {
940 SelectionLayout::new(
941 selection,
942 line_mode,
943 cursor_shape,
944 &snapshot.display_snapshot,
945 false,
946 false,
947 None,
948 )
949 })
950 .collect::<Vec<_>>();
951 selections.push((player, layouts));
952 }
953 (selections, active_rows, newest_selection_head)
954 }
955
956 fn collect_cursors(
957 &self,
958 snapshot: &EditorSnapshot,
959 cx: &mut WindowContext,
960 ) -> Vec<(DisplayPoint, Hsla)> {
961 let editor = self.editor.read(cx);
962 let mut cursors = Vec::new();
963 let mut skip_local = false;
964 let mut add_cursor = |anchor: Anchor, color| {
965 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
966 };
967 // Remote cursors
968 if let Some(collaboration_hub) = &editor.collaboration_hub {
969 for remote_selection in snapshot.remote_selections_in_range(
970 &(Anchor::min()..Anchor::max()),
971 collaboration_hub.deref(),
972 cx,
973 ) {
974 let color = Self::get_participant_color(remote_selection.participant_index, cx);
975 add_cursor(remote_selection.selection.head(), color.cursor);
976 if Some(remote_selection.peer_id) == editor.leader_peer_id {
977 skip_local = true;
978 }
979 }
980 }
981 // Local cursors
982 if !skip_local {
983 let color = cx.theme().players().local().cursor;
984 editor.selections.disjoint.iter().for_each(|selection| {
985 add_cursor(selection.head(), color);
986 });
987 if let Some(ref selection) = editor.selections.pending_anchor() {
988 add_cursor(selection.head(), color);
989 }
990 }
991 cursors
992 }
993
994 #[allow(clippy::too_many_arguments)]
995 fn layout_visible_cursors(
996 &self,
997 snapshot: &EditorSnapshot,
998 selections: &[(PlayerColor, Vec<SelectionLayout>)],
999 visible_display_row_range: Range<DisplayRow>,
1000 line_layouts: &[LineWithInvisibles],
1001 text_hitbox: &Hitbox,
1002 content_origin: gpui::Point<Pixels>,
1003 scroll_position: gpui::Point<f32>,
1004 scroll_pixel_position: gpui::Point<Pixels>,
1005 line_height: Pixels,
1006 em_width: Pixels,
1007 autoscroll_containing_element: bool,
1008 cx: &mut WindowContext,
1009 ) -> Vec<CursorLayout> {
1010 let mut autoscroll_bounds = None;
1011 let cursor_layouts = self.editor.update(cx, |editor, cx| {
1012 let mut cursors = Vec::new();
1013 for (player_color, selections) in selections {
1014 for selection in selections {
1015 let cursor_position = selection.head;
1016
1017 let in_range = visible_display_row_range.contains(&cursor_position.row());
1018 if (selection.is_local && !editor.show_local_cursors(cx)) || !in_range {
1019 continue;
1020 }
1021
1022 let cursor_row_layout = &line_layouts
1023 [cursor_position.row().minus(visible_display_row_range.start) as usize];
1024 let cursor_column = cursor_position.column() as usize;
1025
1026 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1027 let mut block_width =
1028 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1029 if block_width == Pixels::ZERO {
1030 block_width = em_width;
1031 }
1032 let block_text = if let CursorShape::Block = selection.cursor_shape {
1033 snapshot.display_chars_at(cursor_position).next().and_then(
1034 |(character, _)| {
1035 let text = if character == '\n' {
1036 SharedString::from(" ")
1037 } else {
1038 SharedString::from(character.to_string())
1039 };
1040 let len = text.len();
1041
1042 let font = cursor_row_layout
1043 .font_id_for_index(cursor_column)
1044 .and_then(|cursor_font_id| {
1045 cx.text_system().get_font_for_id(cursor_font_id)
1046 })
1047 .unwrap_or(self.style.text.font());
1048
1049 cx.text_system()
1050 .shape_line(
1051 text,
1052 cursor_row_layout.font_size,
1053 &[TextRun {
1054 len,
1055 font,
1056 color: self.style.background,
1057 background_color: None,
1058 strikethrough: None,
1059 underline: None,
1060 }],
1061 )
1062 .log_err()
1063 },
1064 )
1065 } else {
1066 None
1067 };
1068
1069 let x = cursor_character_x - scroll_pixel_position.x;
1070 let y = (cursor_position.row().as_f32()
1071 - scroll_pixel_position.y / line_height)
1072 * line_height;
1073 if selection.is_newest {
1074 editor.pixel_position_of_newest_cursor = Some(point(
1075 text_hitbox.origin.x + x + block_width / 2.,
1076 text_hitbox.origin.y + y + line_height / 2.,
1077 ));
1078
1079 if autoscroll_containing_element {
1080 let top = text_hitbox.origin.y
1081 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1082 * line_height;
1083 let left = text_hitbox.origin.x
1084 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1085 .max(0.)
1086 * em_width;
1087
1088 let bottom = text_hitbox.origin.y
1089 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1090 * line_height;
1091 let right = text_hitbox.origin.x
1092 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1093 * em_width;
1094
1095 autoscroll_bounds =
1096 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1097 }
1098 }
1099
1100 let mut cursor = CursorLayout {
1101 color: player_color.cursor,
1102 block_width,
1103 origin: point(x, y),
1104 line_height,
1105 shape: selection.cursor_shape,
1106 block_text,
1107 cursor_name: None,
1108 };
1109 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1110 string: name,
1111 color: self.style.background,
1112 is_top_row: cursor_position.row().0 == 0,
1113 });
1114 cursor.layout(content_origin, cursor_name, cx);
1115 cursors.push(cursor);
1116 }
1117 }
1118 cursors
1119 });
1120
1121 if let Some(bounds) = autoscroll_bounds {
1122 cx.request_autoscroll(bounds);
1123 }
1124
1125 cursor_layouts
1126 }
1127
1128 fn layout_scrollbar(
1129 &self,
1130 snapshot: &EditorSnapshot,
1131 bounds: Bounds<Pixels>,
1132 scroll_position: gpui::Point<f32>,
1133 rows_per_page: f32,
1134 non_visible_cursors: bool,
1135 cx: &mut WindowContext,
1136 ) -> Option<ScrollbarLayout> {
1137 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1138 let show_scrollbars = match scrollbar_settings.show {
1139 ShowScrollbar::Auto => {
1140 let editor = self.editor.read(cx);
1141 let is_singleton = editor.is_singleton(cx);
1142 // Git
1143 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1144 ||
1145 // Buffer Search Results
1146 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1147 ||
1148 // Selected Symbol Occurrences
1149 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1150 ||
1151 // Diagnostics
1152 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
1153 ||
1154 // Cursors out of sight
1155 non_visible_cursors
1156 ||
1157 // Scrollmanager
1158 editor.scroll_manager.scrollbars_visible()
1159 }
1160 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1161 ShowScrollbar::Always => true,
1162 ShowScrollbar::Never => false,
1163 };
1164 if snapshot.mode != EditorMode::Full {
1165 return None;
1166 }
1167
1168 let visible_row_range = scroll_position.y..scroll_position.y + rows_per_page;
1169
1170 // If a drag took place after we started dragging the scrollbar,
1171 // cancel the scrollbar drag.
1172 if cx.has_active_drag() {
1173 self.editor.update(cx, |editor, cx| {
1174 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1175 });
1176 }
1177
1178 let track_bounds = Bounds::from_corners(
1179 point(self.scrollbar_left(&bounds), bounds.origin.y),
1180 point(bounds.lower_right().x, bounds.lower_left().y),
1181 );
1182
1183 let settings = EditorSettings::get_global(cx);
1184 let scroll_beyond_last_line: f32 = match settings.scroll_beyond_last_line {
1185 ScrollBeyondLastLine::OnePage => rows_per_page,
1186 ScrollBeyondLastLine::Off => 1.0,
1187 ScrollBeyondLastLine::VerticalScrollMargin => 1.0 + settings.vertical_scroll_margin,
1188 };
1189 let total_rows =
1190 (snapshot.max_point().row().as_f32() + scroll_beyond_last_line).max(rows_per_page);
1191 let height = bounds.size.height;
1192 let px_per_row = height / total_rows;
1193 let thumb_height = (rows_per_page * px_per_row).max(ScrollbarLayout::MIN_THUMB_HEIGHT);
1194 let row_height = (height - thumb_height) / (total_rows - rows_per_page).max(0.);
1195
1196 Some(ScrollbarLayout {
1197 hitbox: cx.insert_hitbox(track_bounds, false),
1198 visible_row_range,
1199 row_height,
1200 visible: show_scrollbars,
1201 thumb_height,
1202 })
1203 }
1204
1205 #[allow(clippy::too_many_arguments)]
1206 fn prepaint_gutter_fold_toggles(
1207 &self,
1208 toggles: &mut [Option<AnyElement>],
1209 line_height: Pixels,
1210 gutter_dimensions: &GutterDimensions,
1211 gutter_settings: crate::editor_settings::Gutter,
1212 scroll_pixel_position: gpui::Point<Pixels>,
1213 gutter_hitbox: &Hitbox,
1214 cx: &mut WindowContext,
1215 ) {
1216 for (ix, fold_indicator) in toggles.iter_mut().enumerate() {
1217 if let Some(fold_indicator) = fold_indicator {
1218 debug_assert!(gutter_settings.folds);
1219 let available_space = size(
1220 AvailableSpace::MinContent,
1221 AvailableSpace::Definite(line_height * 0.55),
1222 );
1223 let fold_indicator_size = fold_indicator.layout_as_root(available_space, cx);
1224
1225 let position = point(
1226 gutter_dimensions.width - gutter_dimensions.right_padding,
1227 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1228 );
1229 let centering_offset = point(
1230 (gutter_dimensions.fold_area_width() - fold_indicator_size.width) / 2.,
1231 (line_height - fold_indicator_size.height) / 2.,
1232 );
1233 let origin = gutter_hitbox.origin + position + centering_offset;
1234 fold_indicator.prepaint_as_root(origin, available_space, cx);
1235 }
1236 }
1237 }
1238
1239 #[allow(clippy::too_many_arguments)]
1240 fn prepaint_crease_trailers(
1241 &self,
1242 trailers: Vec<Option<AnyElement>>,
1243 lines: &[LineWithInvisibles],
1244 line_height: Pixels,
1245 content_origin: gpui::Point<Pixels>,
1246 scroll_pixel_position: gpui::Point<Pixels>,
1247 em_width: Pixels,
1248 cx: &mut WindowContext,
1249 ) -> Vec<Option<CreaseTrailerLayout>> {
1250 trailers
1251 .into_iter()
1252 .enumerate()
1253 .map(|(ix, element)| {
1254 let mut element = element?;
1255 let available_space = size(
1256 AvailableSpace::MinContent,
1257 AvailableSpace::Definite(line_height),
1258 );
1259 let size = element.layout_as_root(available_space, cx);
1260
1261 let line = &lines[ix];
1262 let padding = if line.width == Pixels::ZERO {
1263 Pixels::ZERO
1264 } else {
1265 4. * em_width
1266 };
1267 let position = point(
1268 scroll_pixel_position.x + line.width + padding,
1269 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1270 );
1271 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1272 let origin = content_origin + position + centering_offset;
1273 element.prepaint_as_root(origin, available_space, cx);
1274 Some(CreaseTrailerLayout {
1275 element,
1276 bounds: Bounds::new(origin, size),
1277 })
1278 })
1279 .collect()
1280 }
1281
1282 // Folds contained in a hunk are ignored apart from shrinking visual size
1283 // If a fold contains any hunks then that fold line is marked as modified
1284 fn layout_gutter_git_hunks(
1285 &self,
1286 line_height: Pixels,
1287 gutter_hitbox: &Hitbox,
1288 display_rows: Range<DisplayRow>,
1289 snapshot: &EditorSnapshot,
1290 cx: &mut WindowContext,
1291 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1292 let buffer_snapshot = &snapshot.buffer_snapshot;
1293
1294 let buffer_start_row = MultiBufferRow(
1295 DisplayPoint::new(display_rows.start, 0)
1296 .to_point(snapshot)
1297 .row,
1298 );
1299 let buffer_end_row = MultiBufferRow(
1300 DisplayPoint::new(display_rows.end, 0)
1301 .to_point(snapshot)
1302 .row,
1303 );
1304
1305 let git_gutter_setting = ProjectSettings::get_global(cx)
1306 .git
1307 .git_gutter
1308 .unwrap_or_default();
1309 let display_hunks = buffer_snapshot
1310 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1311 .map(|hunk| diff_hunk_to_display(&hunk, snapshot))
1312 .dedup()
1313 .map(|hunk| match git_gutter_setting {
1314 GitGutterSetting::TrackedFiles => {
1315 let hitbox = match hunk {
1316 DisplayDiffHunk::Unfolded { .. } => {
1317 let hunk_bounds = Self::diff_hunk_bounds(
1318 &snapshot,
1319 line_height,
1320 gutter_hitbox.bounds,
1321 &hunk,
1322 );
1323 Some(cx.insert_hitbox(hunk_bounds, true))
1324 }
1325 DisplayDiffHunk::Folded { .. } => None,
1326 };
1327 (hunk, hitbox)
1328 }
1329 GitGutterSetting::Hide => (hunk, None),
1330 })
1331 .collect();
1332 display_hunks
1333 }
1334
1335 #[allow(clippy::too_many_arguments)]
1336 fn layout_inline_blame(
1337 &self,
1338 display_row: DisplayRow,
1339 display_snapshot: &DisplaySnapshot,
1340 line_layout: &LineWithInvisibles,
1341 crease_trailer: Option<&CreaseTrailerLayout>,
1342 em_width: Pixels,
1343 content_origin: gpui::Point<Pixels>,
1344 scroll_pixel_position: gpui::Point<Pixels>,
1345 line_height: Pixels,
1346 cx: &mut WindowContext,
1347 ) -> Option<AnyElement> {
1348 if !self
1349 .editor
1350 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1351 {
1352 return None;
1353 }
1354
1355 let workspace = self
1356 .editor
1357 .read(cx)
1358 .workspace
1359 .as_ref()
1360 .map(|(w, _)| w.clone());
1361
1362 let display_point = DisplayPoint::new(display_row, 0);
1363 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1364
1365 let blame = self.editor.read(cx).blame.clone()?;
1366 let blame_entry = blame
1367 .update(cx, |blame, cx| {
1368 blame.blame_for_rows([Some(buffer_row)], cx).next()
1369 })
1370 .flatten()?;
1371
1372 let mut element =
1373 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1374
1375 let start_y = content_origin.y
1376 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1377
1378 let start_x = {
1379 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1380
1381 let line_end = if let Some(crease_trailer) = crease_trailer {
1382 crease_trailer.bounds.right()
1383 } else {
1384 content_origin.x - scroll_pixel_position.x + line_layout.width
1385 };
1386 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1387
1388 let min_column_in_pixels = ProjectSettings::get_global(cx)
1389 .git
1390 .inline_blame
1391 .and_then(|settings| settings.min_column)
1392 .map(|col| self.column_pixels(col as usize, cx))
1393 .unwrap_or(px(0.));
1394 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1395
1396 cmp::max(padded_line_end, min_start)
1397 };
1398
1399 let absolute_offset = point(start_x, start_y);
1400 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1401
1402 Some(element)
1403 }
1404
1405 #[allow(clippy::too_many_arguments)]
1406 fn layout_blame_entries(
1407 &self,
1408 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1409 em_width: Pixels,
1410 scroll_position: gpui::Point<f32>,
1411 line_height: Pixels,
1412 gutter_hitbox: &Hitbox,
1413 max_width: Option<Pixels>,
1414 cx: &mut WindowContext,
1415 ) -> Option<Vec<AnyElement>> {
1416 if !self
1417 .editor
1418 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1419 {
1420 return None;
1421 }
1422
1423 let blame = self.editor.read(cx).blame.clone()?;
1424 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1425 blame.blame_for_rows(buffer_rows, cx).collect()
1426 });
1427
1428 let width = if let Some(max_width) = max_width {
1429 AvailableSpace::Definite(max_width)
1430 } else {
1431 AvailableSpace::MaxContent
1432 };
1433 let scroll_top = scroll_position.y * line_height;
1434 let start_x = em_width * 1;
1435
1436 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1437
1438 let shaped_lines = blamed_rows
1439 .into_iter()
1440 .enumerate()
1441 .flat_map(|(ix, blame_entry)| {
1442 if let Some(blame_entry) = blame_entry {
1443 let mut element = render_blame_entry(
1444 ix,
1445 &blame,
1446 blame_entry,
1447 &self.style,
1448 &mut last_used_color,
1449 self.editor.clone(),
1450 cx,
1451 );
1452
1453 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1454 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1455
1456 element.prepaint_as_root(
1457 absolute_offset,
1458 size(width, AvailableSpace::MinContent),
1459 cx,
1460 );
1461
1462 Some(element)
1463 } else {
1464 None
1465 }
1466 })
1467 .collect();
1468
1469 Some(shaped_lines)
1470 }
1471
1472 #[allow(clippy::too_many_arguments)]
1473 fn layout_indent_guides(
1474 &self,
1475 content_origin: gpui::Point<Pixels>,
1476 text_origin: gpui::Point<Pixels>,
1477 visible_buffer_range: Range<MultiBufferRow>,
1478 scroll_pixel_position: gpui::Point<Pixels>,
1479 line_height: Pixels,
1480 snapshot: &DisplaySnapshot,
1481 cx: &mut WindowContext,
1482 ) -> Option<Vec<IndentGuideLayout>> {
1483 let indent_guides = self.editor.update(cx, |editor, cx| {
1484 editor.indent_guides(visible_buffer_range, snapshot, cx)
1485 })?;
1486
1487 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1488 editor
1489 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1490 .unwrap_or_default()
1491 });
1492
1493 Some(
1494 indent_guides
1495 .into_iter()
1496 .enumerate()
1497 .filter_map(|(i, indent_guide)| {
1498 let single_indent_width =
1499 self.column_pixels(indent_guide.tab_size as usize, cx);
1500 let total_width = single_indent_width * indent_guide.depth as f32;
1501 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1502 if start_x >= text_origin.x {
1503 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1504 indent_guide.multibuffer_row_range.clone(),
1505 line_height,
1506 snapshot,
1507 );
1508
1509 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1510
1511 Some(IndentGuideLayout {
1512 origin: point(start_x, start_y),
1513 length,
1514 single_indent_width,
1515 depth: indent_guide.depth,
1516 active: active_indent_guide_indices.contains(&i),
1517 settings: indent_guide.settings,
1518 })
1519 } else {
1520 None
1521 }
1522 })
1523 .collect(),
1524 )
1525 }
1526
1527 fn calculate_indent_guide_bounds(
1528 row_range: Range<MultiBufferRow>,
1529 line_height: Pixels,
1530 snapshot: &DisplaySnapshot,
1531 ) -> (gpui::Pixels, gpui::Pixels) {
1532 let start_point = Point::new(row_range.start.0, 0);
1533 let end_point = Point::new(row_range.end.0, 0);
1534
1535 let row_range = start_point.to_display_point(snapshot).row()
1536 ..end_point.to_display_point(snapshot).row();
1537
1538 let mut prev_line = start_point;
1539 prev_line.row = prev_line.row.saturating_sub(1);
1540 let prev_line = prev_line.to_display_point(snapshot).row();
1541
1542 let mut cons_line = end_point;
1543 cons_line.row += 1;
1544 let cons_line = cons_line.to_display_point(snapshot).row();
1545
1546 let mut offset_y = row_range.start.0 as f32 * line_height;
1547 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1548
1549 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1550 if row_range.end == cons_line {
1551 length += line_height;
1552 }
1553
1554 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1555 // we want to extend the indent guide to the start of the block.
1556 let mut block_height = 0;
1557 let mut block_offset = 0;
1558 let mut found_excerpt_header = false;
1559 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1560 if matches!(block, Block::ExcerptHeader { .. }) {
1561 found_excerpt_header = true;
1562 break;
1563 }
1564 block_offset += block.height();
1565 block_height += block.height();
1566 }
1567 if !found_excerpt_header {
1568 offset_y -= block_offset as f32 * line_height;
1569 length += block_height as f32 * line_height;
1570 }
1571
1572 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1573 // we want to ensure that the indent guide stops before the excerpt header.
1574 let mut block_height = 0;
1575 let mut found_excerpt_header = false;
1576 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1577 if matches!(block, Block::ExcerptHeader { .. }) {
1578 found_excerpt_header = true;
1579 }
1580 block_height += block.height();
1581 }
1582 if found_excerpt_header {
1583 length -= block_height as f32 * line_height;
1584 }
1585
1586 (offset_y, length)
1587 }
1588
1589 #[allow(clippy::too_many_arguments)]
1590 fn layout_run_indicators(
1591 &self,
1592 line_height: Pixels,
1593 scroll_pixel_position: gpui::Point<Pixels>,
1594 gutter_dimensions: &GutterDimensions,
1595 gutter_hitbox: &Hitbox,
1596 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1597 snapshot: &EditorSnapshot,
1598 cx: &mut WindowContext,
1599 ) -> Vec<AnyElement> {
1600 self.editor.update(cx, |editor, cx| {
1601 let active_task_indicator_row =
1602 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1603 deployed_from_indicator,
1604 actions,
1605 ..
1606 })) = editor.context_menu.read().as_ref()
1607 {
1608 actions
1609 .tasks
1610 .as_ref()
1611 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1612 .or_else(|| *deployed_from_indicator)
1613 } else {
1614 None
1615 };
1616 editor
1617 .tasks
1618 .iter()
1619 .filter_map(|(_, tasks)| {
1620 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1621 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1622 if snapshot.is_line_folded(multibuffer_row) {
1623 return None;
1624 }
1625 let display_row = multibuffer_point.to_display_point(snapshot).row();
1626 let button = editor.render_run_indicator(
1627 &self.style,
1628 Some(display_row) == active_task_indicator_row,
1629 display_row,
1630 cx,
1631 );
1632
1633 let button = prepaint_gutter_button(
1634 button,
1635 display_row,
1636 line_height,
1637 gutter_dimensions,
1638 scroll_pixel_position,
1639 gutter_hitbox,
1640 rows_with_hunk_bounds,
1641 cx,
1642 );
1643 Some(button)
1644 })
1645 .collect_vec()
1646 })
1647 }
1648
1649 #[allow(clippy::too_many_arguments)]
1650 fn layout_code_actions_indicator(
1651 &self,
1652 line_height: Pixels,
1653 newest_selection_head: DisplayPoint,
1654 scroll_pixel_position: gpui::Point<Pixels>,
1655 gutter_dimensions: &GutterDimensions,
1656 gutter_hitbox: &Hitbox,
1657 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1658 cx: &mut WindowContext,
1659 ) -> Option<AnyElement> {
1660 let mut active = false;
1661 let mut button = None;
1662 let row = newest_selection_head.row();
1663 self.editor.update(cx, |editor, cx| {
1664 if let Some(crate::ContextMenu::CodeActions(CodeActionsMenu {
1665 deployed_from_indicator,
1666 ..
1667 })) = editor.context_menu.read().as_ref()
1668 {
1669 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1670 };
1671 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1672 });
1673
1674 let button = prepaint_gutter_button(
1675 button?,
1676 row,
1677 line_height,
1678 gutter_dimensions,
1679 scroll_pixel_position,
1680 gutter_hitbox,
1681 rows_with_hunk_bounds,
1682 cx,
1683 );
1684
1685 Some(button)
1686 }
1687
1688 fn get_participant_color(
1689 participant_index: Option<ParticipantIndex>,
1690 cx: &WindowContext,
1691 ) -> PlayerColor {
1692 if let Some(index) = participant_index {
1693 cx.theme().players().color_for_participant(index.0)
1694 } else {
1695 cx.theme().players().absent()
1696 }
1697 }
1698
1699 fn calculate_relative_line_numbers(
1700 &self,
1701 snapshot: &EditorSnapshot,
1702 rows: &Range<DisplayRow>,
1703 relative_to: Option<DisplayRow>,
1704 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1705 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1706 let Some(relative_to) = relative_to else {
1707 return relative_rows;
1708 };
1709
1710 let start = rows.start.min(relative_to);
1711 let end = rows.end.max(relative_to);
1712
1713 let buffer_rows = snapshot
1714 .buffer_rows(start)
1715 .take(1 + end.minus(start) as usize)
1716 .collect::<Vec<_>>();
1717
1718 let head_idx = relative_to.minus(start);
1719 let mut delta = 1;
1720 let mut i = head_idx + 1;
1721 while i < buffer_rows.len() as u32 {
1722 if buffer_rows[i as usize].is_some() {
1723 if rows.contains(&DisplayRow(i + start.0)) {
1724 relative_rows.insert(DisplayRow(i + start.0), delta);
1725 }
1726 delta += 1;
1727 }
1728 i += 1;
1729 }
1730 delta = 1;
1731 i = head_idx.min(buffer_rows.len() as u32 - 1);
1732 while i > 0 && buffer_rows[i as usize].is_none() {
1733 i -= 1;
1734 }
1735
1736 while i > 0 {
1737 i -= 1;
1738 if buffer_rows[i as usize].is_some() {
1739 if rows.contains(&DisplayRow(i + start.0)) {
1740 relative_rows.insert(DisplayRow(i + start.0), delta);
1741 }
1742 delta += 1;
1743 }
1744 }
1745
1746 relative_rows
1747 }
1748
1749 fn layout_line_numbers(
1750 &self,
1751 rows: Range<DisplayRow>,
1752 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1753 active_rows: &BTreeMap<DisplayRow, bool>,
1754 newest_selection_head: Option<DisplayPoint>,
1755 snapshot: &EditorSnapshot,
1756 cx: &mut WindowContext,
1757 ) -> Vec<Option<ShapedLine>> {
1758 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
1759 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
1760 });
1761 if !include_line_numbers {
1762 return Vec::new();
1763 }
1764
1765 let editor = self.editor.read(cx);
1766 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1767 let newest = editor.selections.newest::<Point>(cx);
1768 SelectionLayout::new(
1769 newest,
1770 editor.selections.line_mode,
1771 editor.cursor_shape,
1772 &snapshot.display_snapshot,
1773 true,
1774 true,
1775 None,
1776 )
1777 .head
1778 });
1779 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1780
1781 let is_relative = editor.should_use_relative_line_numbers(cx);
1782 let relative_to = if is_relative {
1783 Some(newest_selection_head.row())
1784 } else {
1785 None
1786 };
1787 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
1788 let mut line_number = String::new();
1789 buffer_rows
1790 .into_iter()
1791 .enumerate()
1792 .map(|(ix, multibuffer_row)| {
1793 let multibuffer_row = multibuffer_row?;
1794 let display_row = DisplayRow(rows.start.0 + ix as u32);
1795 let color = if active_rows.contains_key(&display_row) {
1796 cx.theme().colors().editor_active_line_number
1797 } else {
1798 cx.theme().colors().editor_line_number
1799 };
1800 line_number.clear();
1801 let default_number = multibuffer_row.0 + 1;
1802 let number = relative_rows
1803 .get(&DisplayRow(ix as u32 + rows.start.0))
1804 .unwrap_or(&default_number);
1805 write!(&mut line_number, "{number}").unwrap();
1806 let run = TextRun {
1807 len: line_number.len(),
1808 font: self.style.text.font(),
1809 color,
1810 background_color: None,
1811 underline: None,
1812 strikethrough: None,
1813 };
1814 let shaped_line = cx
1815 .text_system()
1816 .shape_line(line_number.clone().into(), font_size, &[run])
1817 .unwrap();
1818 Some(shaped_line)
1819 })
1820 .collect()
1821 }
1822
1823 fn layout_gutter_fold_toggles(
1824 &self,
1825 rows: Range<DisplayRow>,
1826 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1827 active_rows: &BTreeMap<DisplayRow, bool>,
1828 snapshot: &EditorSnapshot,
1829 cx: &mut WindowContext,
1830 ) -> Vec<Option<AnyElement>> {
1831 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
1832 && snapshot.mode == EditorMode::Full
1833 && self.editor.read(cx).is_singleton(cx);
1834 if include_fold_statuses {
1835 buffer_rows
1836 .into_iter()
1837 .enumerate()
1838 .map(|(ix, row)| {
1839 if let Some(multibuffer_row) = row {
1840 let display_row = DisplayRow(rows.start.0 + ix as u32);
1841 let active = active_rows.contains_key(&display_row);
1842 snapshot.render_fold_toggle(
1843 multibuffer_row,
1844 active,
1845 self.editor.clone(),
1846 cx,
1847 )
1848 } else {
1849 None
1850 }
1851 })
1852 .collect()
1853 } else {
1854 Vec::new()
1855 }
1856 }
1857
1858 fn layout_crease_trailers(
1859 &self,
1860 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
1861 snapshot: &EditorSnapshot,
1862 cx: &mut WindowContext,
1863 ) -> Vec<Option<AnyElement>> {
1864 buffer_rows
1865 .into_iter()
1866 .map(|row| {
1867 if let Some(multibuffer_row) = row {
1868 snapshot.render_crease_trailer(multibuffer_row, cx)
1869 } else {
1870 None
1871 }
1872 })
1873 .collect()
1874 }
1875
1876 fn layout_lines(
1877 rows: Range<DisplayRow>,
1878 line_number_layouts: &[Option<ShapedLine>],
1879 snapshot: &EditorSnapshot,
1880 style: &EditorStyle,
1881 editor_width: Pixels,
1882 cx: &mut WindowContext,
1883 ) -> Vec<LineWithInvisibles> {
1884 if rows.start >= rows.end {
1885 return Vec::new();
1886 }
1887
1888 // Show the placeholder when the editor is empty
1889 if snapshot.is_empty() {
1890 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1891 let placeholder_color = cx.theme().colors().text_placeholder;
1892 let placeholder_text = snapshot.placeholder_text();
1893
1894 let placeholder_lines = placeholder_text
1895 .as_ref()
1896 .map_or("", AsRef::as_ref)
1897 .split('\n')
1898 .skip(rows.start.0 as usize)
1899 .chain(iter::repeat(""))
1900 .take(rows.len());
1901 placeholder_lines
1902 .filter_map(move |line| {
1903 let run = TextRun {
1904 len: line.len(),
1905 font: style.text.font(),
1906 color: placeholder_color,
1907 background_color: None,
1908 underline: Default::default(),
1909 strikethrough: None,
1910 };
1911 cx.text_system()
1912 .shape_line(line.to_string().into(), font_size, &[run])
1913 .log_err()
1914 })
1915 .map(|line| LineWithInvisibles {
1916 width: line.width,
1917 len: line.len,
1918 fragments: smallvec![LineFragment::Text(line)],
1919 invisibles: Vec::new(),
1920 font_size,
1921 })
1922 .collect()
1923 } else {
1924 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
1925 LineWithInvisibles::from_chunks(
1926 chunks,
1927 &style.text,
1928 MAX_LINE_LEN,
1929 rows.len(),
1930 line_number_layouts,
1931 snapshot.mode,
1932 editor_width,
1933 cx,
1934 )
1935 }
1936 }
1937
1938 fn prepaint_lines(
1939 &self,
1940 start_row: DisplayRow,
1941 line_layouts: &mut [LineWithInvisibles],
1942 line_height: Pixels,
1943 scroll_pixel_position: gpui::Point<Pixels>,
1944 content_origin: gpui::Point<Pixels>,
1945 cx: &mut WindowContext,
1946 ) -> SmallVec<[AnyElement; 1]> {
1947 let mut line_elements = SmallVec::new();
1948 for (ix, line) in line_layouts.iter_mut().enumerate() {
1949 let row = start_row + DisplayRow(ix as u32);
1950 line.prepaint(
1951 line_height,
1952 scroll_pixel_position,
1953 row,
1954 content_origin,
1955 &mut line_elements,
1956 cx,
1957 );
1958 }
1959 line_elements
1960 }
1961
1962 #[allow(clippy::too_many_arguments)]
1963 fn render_block(
1964 &self,
1965 block: &Block,
1966 available_width: AvailableSpace,
1967 block_id: BlockId,
1968 block_row_start: DisplayRow,
1969 snapshot: &EditorSnapshot,
1970 text_x: Pixels,
1971 rows: &Range<DisplayRow>,
1972 line_layouts: &[LineWithInvisibles],
1973 gutter_dimensions: &GutterDimensions,
1974 line_height: Pixels,
1975 em_width: Pixels,
1976 text_hitbox: &Hitbox,
1977 editor_width: Pixels,
1978 scroll_width: &mut Pixels,
1979 resized_blocks: &mut HashMap<CustomBlockId, u32>,
1980 cx: &mut WindowContext,
1981 ) -> (AnyElement, Size<Pixels>) {
1982 let mut element = match block {
1983 Block::Custom(block) => {
1984 let align_to = block
1985 .position()
1986 .to_point(&snapshot.buffer_snapshot)
1987 .to_display_point(snapshot);
1988 let anchor_x = text_x
1989 + if rows.contains(&align_to.row()) {
1990 line_layouts[align_to.row().minus(rows.start) as usize]
1991 .x_for_index(align_to.column() as usize)
1992 } else {
1993 layout_line(align_to.row(), snapshot, &self.style, editor_width, cx)
1994 .x_for_index(align_to.column() as usize)
1995 };
1996
1997 div()
1998 .size_full()
1999 .child(block.render(&mut BlockContext {
2000 context: cx,
2001 anchor_x,
2002 gutter_dimensions,
2003 line_height,
2004 em_width,
2005 block_id,
2006 max_width: text_hitbox.size.width.max(*scroll_width),
2007 editor_style: &self.style,
2008 }))
2009 .cursor(CursorStyle::Arrow)
2010 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
2011 .into_any_element()
2012 }
2013
2014 Block::ExcerptHeader {
2015 buffer,
2016 range,
2017 starts_new_buffer,
2018 height,
2019 id,
2020 show_excerpt_controls,
2021 ..
2022 } => {
2023 let include_root = self
2024 .editor
2025 .read(cx)
2026 .project
2027 .as_ref()
2028 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2029 .unwrap_or_default();
2030
2031 #[derive(Clone)]
2032 struct JumpData {
2033 position: Point,
2034 anchor: text::Anchor,
2035 path: ProjectPath,
2036 line_offset_from_top: u32,
2037 }
2038
2039 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
2040 let jump_path = ProjectPath {
2041 worktree_id: file.worktree_id(cx),
2042 path: file.path.clone(),
2043 };
2044 let jump_anchor = range
2045 .primary
2046 .as_ref()
2047 .map_or(range.context.start, |primary| primary.start);
2048
2049 let excerpt_start = range.context.start;
2050 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2051 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
2052 0
2053 } else {
2054 let excerpt_start_row =
2055 language::ToPoint::to_point(&jump_anchor, buffer).row;
2056 jump_position.row - excerpt_start_row
2057 };
2058
2059 let line_offset_from_top =
2060 block_row_start.0 + *height + offset_from_excerpt_start
2061 - snapshot
2062 .scroll_anchor
2063 .scroll_position(&snapshot.display_snapshot)
2064 .y as u32;
2065
2066 JumpData {
2067 position: jump_position,
2068 anchor: jump_anchor,
2069 path: jump_path,
2070 line_offset_from_top,
2071 }
2072 });
2073
2074 let icon_offset = gutter_dimensions.width
2075 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2076
2077 let element = if *starts_new_buffer {
2078 let path = buffer.resolve_file_path(cx, include_root);
2079 let mut filename = None;
2080 let mut parent_path = None;
2081 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2082 if let Some(path) = path {
2083 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2084 parent_path = path
2085 .parent()
2086 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2087 }
2088
2089 let header_padding = px(6.0);
2090
2091 v_flex()
2092 .id(("path excerpt header", EntityId::from(block_id)))
2093 .w_full()
2094 .px(header_padding)
2095 .child(
2096 h_flex()
2097 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2098 .id("path header block")
2099 .h(2. * cx.line_height())
2100 .pl(gpui::px(12.))
2101 .pr(gpui::px(8.))
2102 .rounded_md()
2103 .shadow_md()
2104 .border_1()
2105 .border_color(cx.theme().colors().border)
2106 .bg(cx.theme().colors().editor_subheader_background)
2107 .justify_between()
2108 .hover(|style| style.bg(cx.theme().colors().element_hover))
2109 .child(
2110 h_flex().gap_3().child(
2111 h_flex()
2112 .gap_2()
2113 .child(
2114 filename
2115 .map(SharedString::from)
2116 .unwrap_or_else(|| "untitled".into()),
2117 )
2118 .when_some(parent_path, |then, path| {
2119 then.child(
2120 div()
2121 .child(path)
2122 .text_color(cx.theme().colors().text_muted),
2123 )
2124 }),
2125 ),
2126 )
2127 .when_some(jump_data.clone(), |el, jump_data| {
2128 el.child(Icon::new(IconName::ArrowUpRight))
2129 .cursor_pointer()
2130 .tooltip(|cx| {
2131 Tooltip::for_action("Jump to File", &OpenExcerpts, cx)
2132 })
2133 .on_mouse_down(MouseButton::Left, |_, cx| {
2134 cx.stop_propagation()
2135 })
2136 .on_click(cx.listener_for(&self.editor, {
2137 move |editor, _, cx| {
2138 editor.jump(
2139 jump_data.path.clone(),
2140 jump_data.position,
2141 jump_data.anchor,
2142 jump_data.line_offset_from_top,
2143 cx,
2144 );
2145 }
2146 }))
2147 }),
2148 )
2149 .children(show_excerpt_controls.then(|| {
2150 h_flex()
2151 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.333)))
2152 .h(1. * cx.line_height())
2153 .pt_1()
2154 .justify_end()
2155 .flex_none()
2156 .w(icon_offset - header_padding)
2157 .child(
2158 ButtonLike::new("expand-icon")
2159 .style(ButtonStyle::Transparent)
2160 .child(
2161 svg()
2162 .path(IconName::ArrowUpFromLine.path())
2163 .size(IconSize::XSmall.rems())
2164 .text_color(cx.theme().colors().editor_line_number)
2165 .group("")
2166 .hover(|style| {
2167 style.text_color(
2168 cx.theme()
2169 .colors()
2170 .editor_active_line_number,
2171 )
2172 }),
2173 )
2174 .on_click(cx.listener_for(&self.editor, {
2175 let id = *id;
2176 move |editor, _, cx| {
2177 editor.expand_excerpt(
2178 id,
2179 multi_buffer::ExpandExcerptDirection::Up,
2180 cx,
2181 );
2182 }
2183 }))
2184 .tooltip({
2185 move |cx| {
2186 Tooltip::for_action(
2187 "Expand Excerpt",
2188 &ExpandExcerpts { lines: 0 },
2189 cx,
2190 )
2191 }
2192 }),
2193 )
2194 }))
2195 } else {
2196 v_flex()
2197 .id(("excerpt header", EntityId::from(block_id)))
2198 .w_full()
2199 .h(snapshot.excerpt_header_height() as f32 * cx.line_height())
2200 .child(
2201 div()
2202 .flex()
2203 .v_flex()
2204 .justify_start()
2205 .id("jump to collapsed context")
2206 .w(relative(1.0))
2207 .h_full()
2208 .child(
2209 div()
2210 .h_px()
2211 .w_full()
2212 .bg(cx.theme().colors().border_variant)
2213 .group_hover("excerpt-jump-action", |style| {
2214 style.bg(cx.theme().colors().border)
2215 }),
2216 ),
2217 )
2218 .child(
2219 h_flex()
2220 .justify_end()
2221 .flex_none()
2222 .w(icon_offset)
2223 .h_full()
2224 .child(
2225 show_excerpt_controls
2226 .then(|| {
2227 ButtonLike::new("expand-icon")
2228 .style(ButtonStyle::Transparent)
2229 .child(
2230 svg()
2231 .path(IconName::ArrowUpFromLine.path())
2232 .size(IconSize::XSmall.rems())
2233 .text_color(
2234 cx.theme().colors().editor_line_number,
2235 )
2236 .group("")
2237 .hover(|style| {
2238 style.text_color(
2239 cx.theme()
2240 .colors()
2241 .editor_active_line_number,
2242 )
2243 }),
2244 )
2245 .on_click(cx.listener_for(&self.editor, {
2246 let id = *id;
2247 move |editor, _, cx| {
2248 editor.expand_excerpt(
2249 id,
2250 multi_buffer::ExpandExcerptDirection::Up,
2251 cx,
2252 );
2253 }
2254 }))
2255 .tooltip({
2256 move |cx| {
2257 Tooltip::for_action(
2258 "Expand Excerpt",
2259 &ExpandExcerpts { lines: 0 },
2260 cx,
2261 )
2262 }
2263 })
2264 })
2265 .unwrap_or_else(|| {
2266 ButtonLike::new("jump-icon")
2267 .style(ButtonStyle::Transparent)
2268 .child(
2269 svg()
2270 .path(IconName::ArrowUpRight.path())
2271 .size(IconSize::XSmall.rems())
2272 .text_color(
2273 cx.theme().colors().border_variant,
2274 )
2275 .group("excerpt-jump-action")
2276 .group_hover(
2277 "excerpt-jump-action",
2278 |style| {
2279 style.text_color(
2280 cx.theme().colors().border,
2281 )
2282 },
2283 ),
2284 )
2285 .when_some(jump_data.clone(), |this, jump_data| {
2286 this.on_click(cx.listener_for(&self.editor, {
2287 let path = jump_data.path.clone();
2288 move |editor, _, cx| {
2289 cx.stop_propagation();
2290
2291 editor.jump(
2292 path.clone(),
2293 jump_data.position,
2294 jump_data.anchor,
2295 jump_data.line_offset_from_top,
2296 cx,
2297 );
2298 }
2299 }))
2300 .tooltip(move |cx| {
2301 Tooltip::for_action(
2302 format!(
2303 "Jump to {}:L{}",
2304 jump_data.path.path.display(),
2305 jump_data.position.row + 1
2306 ),
2307 &OpenExcerpts,
2308 cx,
2309 )
2310 })
2311 })
2312 }),
2313 ),
2314 )
2315 .group("excerpt-jump-action")
2316 .cursor_pointer()
2317 .when_some(jump_data.clone(), |this, jump_data| {
2318 this.on_click(cx.listener_for(&self.editor, {
2319 let path = jump_data.path.clone();
2320 move |editor, _, cx| {
2321 cx.stop_propagation();
2322
2323 editor.jump(
2324 path.clone(),
2325 jump_data.position,
2326 jump_data.anchor,
2327 jump_data.line_offset_from_top,
2328 cx,
2329 );
2330 }
2331 }))
2332 .tooltip(move |cx| {
2333 Tooltip::for_action(
2334 format!(
2335 "Jump to {}:L{}",
2336 jump_data.path.path.display(),
2337 jump_data.position.row + 1
2338 ),
2339 &OpenExcerpts,
2340 cx,
2341 )
2342 })
2343 })
2344 };
2345 element.into_any()
2346 }
2347
2348 Block::ExcerptFooter { id, .. } => {
2349 let element = v_flex()
2350 .id(("excerpt footer", EntityId::from(block_id)))
2351 .w_full()
2352 .h(snapshot.excerpt_footer_height() as f32 * cx.line_height())
2353 .child(
2354 h_flex()
2355 .justify_end()
2356 .flex_none()
2357 .w(gutter_dimensions.width
2358 - (gutter_dimensions.left_padding + gutter_dimensions.margin))
2359 .h_full()
2360 .child(
2361 ButtonLike::new("expand-icon")
2362 .style(ButtonStyle::Transparent)
2363 .child(
2364 svg()
2365 .path(IconName::ArrowDownFromLine.path())
2366 .size(IconSize::XSmall.rems())
2367 .text_color(cx.theme().colors().editor_line_number)
2368 .group("")
2369 .hover(|style| {
2370 style.text_color(
2371 cx.theme().colors().editor_active_line_number,
2372 )
2373 }),
2374 )
2375 .on_click(cx.listener_for(&self.editor, {
2376 let id = *id;
2377 move |editor, _, cx| {
2378 editor.expand_excerpt(
2379 id,
2380 multi_buffer::ExpandExcerptDirection::Down,
2381 cx,
2382 );
2383 }
2384 }))
2385 .tooltip({
2386 move |cx| {
2387 Tooltip::for_action(
2388 "Expand Excerpt",
2389 &ExpandExcerpts { lines: 0 },
2390 cx,
2391 )
2392 }
2393 }),
2394 ),
2395 );
2396 element.into_any()
2397 }
2398 };
2399
2400 // Discover the element's content height, then round up to the nearest multiple of line height.
2401 let preliminary_size =
2402 element.layout_as_root(size(available_width, AvailableSpace::MinContent), cx);
2403 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2404 let final_size = if preliminary_size.height == quantized_height {
2405 preliminary_size
2406 } else {
2407 element.layout_as_root(size(available_width, quantized_height.into()), cx)
2408 };
2409
2410 if let BlockId::Custom(custom_block_id) = block_id {
2411 if block.height() > 0 {
2412 let element_height_in_lines =
2413 ((final_size.height / line_height).ceil() as u32).max(1);
2414 if element_height_in_lines != block.height() {
2415 resized_blocks.insert(custom_block_id, element_height_in_lines);
2416 }
2417 }
2418 }
2419
2420 (element, final_size)
2421 }
2422
2423 #[allow(clippy::too_many_arguments)]
2424 fn render_blocks(
2425 &self,
2426 rows: Range<DisplayRow>,
2427 snapshot: &EditorSnapshot,
2428 hitbox: &Hitbox,
2429 text_hitbox: &Hitbox,
2430 editor_width: Pixels,
2431 scroll_width: &mut Pixels,
2432 gutter_dimensions: &GutterDimensions,
2433 em_width: Pixels,
2434 text_x: Pixels,
2435 line_height: Pixels,
2436 line_layouts: &[LineWithInvisibles],
2437 cx: &mut WindowContext,
2438 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2439 let (fixed_blocks, non_fixed_blocks) = snapshot
2440 .blocks_in_range(rows.clone())
2441 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2442
2443 let mut focused_block = self
2444 .editor
2445 .update(cx, |editor, _| editor.take_focused_block());
2446 let mut fixed_block_max_width = Pixels::ZERO;
2447 let mut blocks = Vec::new();
2448 let mut resized_blocks = HashMap::default();
2449
2450 for (row, block) in fixed_blocks {
2451 let block_id = block.id();
2452
2453 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2454 focused_block = None;
2455 }
2456
2457 let (element, element_size) = self.render_block(
2458 block,
2459 AvailableSpace::MinContent,
2460 block_id,
2461 row,
2462 snapshot,
2463 text_x,
2464 &rows,
2465 line_layouts,
2466 gutter_dimensions,
2467 line_height,
2468 em_width,
2469 text_hitbox,
2470 editor_width,
2471 scroll_width,
2472 &mut resized_blocks,
2473 cx,
2474 );
2475 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2476 blocks.push(BlockLayout {
2477 id: block_id,
2478 row: Some(row),
2479 element,
2480 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
2481 style: BlockStyle::Fixed,
2482 });
2483 }
2484 for (row, block) in non_fixed_blocks {
2485 let style = block.style();
2486 let width = match style {
2487 BlockStyle::Sticky => hitbox.size.width,
2488 BlockStyle::Flex => hitbox
2489 .size
2490 .width
2491 .max(fixed_block_max_width)
2492 .max(gutter_dimensions.width + *scroll_width),
2493 BlockStyle::Fixed => unreachable!(),
2494 };
2495 let block_id = block.id();
2496
2497 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2498 focused_block = None;
2499 }
2500
2501 let (element, element_size) = self.render_block(
2502 block,
2503 width.into(),
2504 block_id,
2505 row,
2506 snapshot,
2507 text_x,
2508 &rows,
2509 line_layouts,
2510 gutter_dimensions,
2511 line_height,
2512 em_width,
2513 text_hitbox,
2514 editor_width,
2515 scroll_width,
2516 &mut resized_blocks,
2517 cx,
2518 );
2519
2520 blocks.push(BlockLayout {
2521 id: block_id,
2522 row: Some(row),
2523 element,
2524 available_space: size(width.into(), element_size.height.into()),
2525 style,
2526 });
2527 }
2528
2529 if let Some(focused_block) = focused_block {
2530 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2531 if focus_handle.is_focused(cx) {
2532 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2533 let style = block.style();
2534 let width = match style {
2535 BlockStyle::Fixed => AvailableSpace::MinContent,
2536 BlockStyle::Flex => AvailableSpace::Definite(
2537 hitbox
2538 .size
2539 .width
2540 .max(fixed_block_max_width)
2541 .max(gutter_dimensions.width + *scroll_width),
2542 ),
2543 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2544 };
2545
2546 let (element, element_size) = self.render_block(
2547 &block,
2548 width,
2549 focused_block.id,
2550 rows.end,
2551 snapshot,
2552 text_x,
2553 &rows,
2554 line_layouts,
2555 gutter_dimensions,
2556 line_height,
2557 em_width,
2558 text_hitbox,
2559 editor_width,
2560 scroll_width,
2561 &mut resized_blocks,
2562 cx,
2563 );
2564
2565 blocks.push(BlockLayout {
2566 id: block.id(),
2567 row: None,
2568 element,
2569 available_space: size(width, element_size.height.into()),
2570 style,
2571 });
2572 }
2573 }
2574 }
2575 }
2576
2577 if resized_blocks.is_empty() {
2578 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2579 Ok(blocks)
2580 } else {
2581 Err(resized_blocks)
2582 }
2583 }
2584
2585 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
2586 /// a restart of rendering for the editor based on the new sizes.
2587 fn layout_blocks(
2588 &self,
2589 blocks: &mut Vec<BlockLayout>,
2590 hitbox: &Hitbox,
2591 line_height: Pixels,
2592 scroll_pixel_position: gpui::Point<Pixels>,
2593 cx: &mut WindowContext,
2594 ) {
2595 for block in blocks {
2596 let mut origin = if let Some(row) = block.row {
2597 hitbox.origin
2598 + point(
2599 Pixels::ZERO,
2600 row.as_f32() * line_height - scroll_pixel_position.y,
2601 )
2602 } else {
2603 // Position the block outside the visible area
2604 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2605 };
2606
2607 if !matches!(block.style, BlockStyle::Sticky) {
2608 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2609 }
2610
2611 let focus_handle = block
2612 .element
2613 .prepaint_as_root(origin, block.available_space, cx);
2614
2615 if let Some(focus_handle) = focus_handle {
2616 self.editor.update(cx, |editor, _cx| {
2617 editor.set_focused_block(FocusedBlock {
2618 id: block.id,
2619 focus_handle: focus_handle.downgrade(),
2620 });
2621 });
2622 }
2623 }
2624 }
2625
2626 #[allow(clippy::too_many_arguments)]
2627 fn layout_context_menu(
2628 &self,
2629 line_height: Pixels,
2630 hitbox: &Hitbox,
2631 text_hitbox: &Hitbox,
2632 content_origin: gpui::Point<Pixels>,
2633 start_row: DisplayRow,
2634 scroll_pixel_position: gpui::Point<Pixels>,
2635 line_layouts: &[LineWithInvisibles],
2636 newest_selection_head: DisplayPoint,
2637 gutter_overshoot: Pixels,
2638 cx: &mut WindowContext,
2639 ) -> bool {
2640 let max_height = cmp::min(
2641 12. * line_height,
2642 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
2643 );
2644 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
2645 if editor.context_menu_visible() {
2646 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
2647 } else {
2648 None
2649 }
2650 }) else {
2651 return false;
2652 };
2653
2654 let context_menu_size = context_menu.layout_as_root(AvailableSpace::min_size(), cx);
2655
2656 let (x, y) = match position {
2657 crate::ContextMenuOrigin::EditorPoint(point) => {
2658 let cursor_row_layout = &line_layouts[point.row().minus(start_row) as usize];
2659 let x = cursor_row_layout.x_for_index(point.column() as usize)
2660 - scroll_pixel_position.x;
2661 let y = point.row().next_row().as_f32() * line_height - scroll_pixel_position.y;
2662 (x, y)
2663 }
2664 crate::ContextMenuOrigin::GutterIndicator(row) => {
2665 // 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
2666 // text field.
2667 let x = -gutter_overshoot;
2668 let y = row.next_row().as_f32() * line_height - scroll_pixel_position.y;
2669 (x, y)
2670 }
2671 };
2672
2673 let mut list_origin = content_origin + point(x, y);
2674 let list_width = context_menu_size.width;
2675 let list_height = context_menu_size.height;
2676
2677 // Snap the right edge of the list to the right edge of the window if
2678 // its horizontal bounds overflow.
2679 if list_origin.x + list_width > cx.viewport_size().width {
2680 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
2681 }
2682
2683 if list_origin.y + list_height > text_hitbox.lower_right().y {
2684 list_origin.y -= line_height + list_height;
2685 }
2686
2687 cx.defer_draw(context_menu, list_origin, 1);
2688 true
2689 }
2690
2691 fn layout_mouse_context_menu(
2692 &self,
2693 editor_snapshot: &EditorSnapshot,
2694 visible_range: Range<DisplayRow>,
2695 cx: &mut WindowContext,
2696 ) -> Option<AnyElement> {
2697 let position = self.editor.update(cx, |editor, cx| {
2698 let visible_start_point = editor.display_to_pixel_point(
2699 DisplayPoint::new(visible_range.start, 0),
2700 editor_snapshot,
2701 cx,
2702 )?;
2703 let visible_end_point = editor.display_to_pixel_point(
2704 DisplayPoint::new(visible_range.end, 0),
2705 editor_snapshot,
2706 cx,
2707 )?;
2708
2709 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2710 let (source_display_point, position) = match mouse_context_menu.position {
2711 MenuPosition::PinnedToScreen(point) => (None, point),
2712 MenuPosition::PinnedToEditor {
2713 source,
2714 offset_x,
2715 offset_y,
2716 } => {
2717 let source_display_point = source.to_display_point(editor_snapshot);
2718 let mut source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
2719 source_point.x += offset_x;
2720 source_point.y += offset_y;
2721 (Some(source_display_point), source_point)
2722 }
2723 };
2724
2725 let source_included = source_display_point.map_or(true, |source_display_point| {
2726 visible_range
2727 .to_inclusive()
2728 .contains(&source_display_point.row())
2729 });
2730 let position_included =
2731 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
2732 if !source_included && !position_included {
2733 None
2734 } else {
2735 Some(position)
2736 }
2737 })?;
2738
2739 let mut element = self.editor.update(cx, |editor, _| {
2740 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
2741 let context_menu = mouse_context_menu.context_menu.clone();
2742
2743 Some(
2744 deferred(
2745 anchored()
2746 .position(position)
2747 .child(context_menu)
2748 .anchor(AnchorCorner::TopLeft)
2749 .snap_to_window(),
2750 )
2751 .with_priority(1)
2752 .into_any(),
2753 )
2754 })?;
2755
2756 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
2757 Some(element)
2758 }
2759
2760 #[allow(clippy::too_many_arguments)]
2761 fn layout_hover_popovers(
2762 &self,
2763 snapshot: &EditorSnapshot,
2764 hitbox: &Hitbox,
2765 text_hitbox: &Hitbox,
2766 visible_display_row_range: Range<DisplayRow>,
2767 content_origin: gpui::Point<Pixels>,
2768 scroll_pixel_position: gpui::Point<Pixels>,
2769 line_layouts: &[LineWithInvisibles],
2770 line_height: Pixels,
2771 em_width: Pixels,
2772 cx: &mut WindowContext,
2773 ) {
2774 struct MeasuredHoverPopover {
2775 element: AnyElement,
2776 size: Size<Pixels>,
2777 horizontal_offset: Pixels,
2778 }
2779
2780 let max_size = size(
2781 (120. * em_width) // Default size
2782 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2783 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2784 (16. * line_height) // Default size
2785 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2786 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2787 );
2788
2789 let hover_popovers = self.editor.update(cx, |editor, cx| {
2790 editor
2791 .hover_state
2792 .render(&snapshot, visible_display_row_range.clone(), max_size, cx)
2793 });
2794 let Some((position, hover_popovers)) = hover_popovers else {
2795 return;
2796 };
2797
2798 // This is safe because we check on layout whether the required row is available
2799 let hovered_row_layout =
2800 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
2801
2802 // Compute Hovered Point
2803 let x =
2804 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
2805 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
2806 let hovered_point = content_origin + point(x, y);
2807
2808 let mut overall_height = Pixels::ZERO;
2809 let mut measured_hover_popovers = Vec::new();
2810 for mut hover_popover in hover_popovers {
2811 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
2812 let horizontal_offset =
2813 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
2814
2815 overall_height += HOVER_POPOVER_GAP + size.height;
2816
2817 measured_hover_popovers.push(MeasuredHoverPopover {
2818 element: hover_popover,
2819 size,
2820 horizontal_offset,
2821 });
2822 }
2823 overall_height += HOVER_POPOVER_GAP;
2824
2825 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
2826 let mut occlusion = div()
2827 .size_full()
2828 .occlude()
2829 .on_mouse_move(|_, cx| cx.stop_propagation())
2830 .into_any_element();
2831 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
2832 cx.defer_draw(occlusion, origin, 2);
2833 }
2834
2835 if hovered_point.y > overall_height {
2836 // There is enough space above. Render popovers above the hovered point
2837 let mut current_y = hovered_point.y;
2838 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2839 let size = popover.size;
2840 let popover_origin = point(
2841 hovered_point.x + popover.horizontal_offset,
2842 current_y - size.height,
2843 );
2844
2845 cx.defer_draw(popover.element, popover_origin, 2);
2846 if position != itertools::Position::Last {
2847 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
2848 draw_occluder(size.width, origin, cx);
2849 }
2850
2851 current_y = popover_origin.y - HOVER_POPOVER_GAP;
2852 }
2853 } else {
2854 // There is not enough space above. Render popovers below the hovered point
2855 let mut current_y = hovered_point.y + line_height;
2856 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2857 let size = popover.size;
2858 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
2859
2860 cx.defer_draw(popover.element, popover_origin, 2);
2861 if position != itertools::Position::Last {
2862 let origin = point(popover_origin.x, popover_origin.y + size.height);
2863 draw_occluder(size.width, origin, cx);
2864 }
2865
2866 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
2867 }
2868 }
2869 }
2870
2871 #[allow(clippy::too_many_arguments)]
2872 fn layout_signature_help(
2873 &self,
2874 hitbox: &Hitbox,
2875 content_origin: gpui::Point<Pixels>,
2876 scroll_pixel_position: gpui::Point<Pixels>,
2877 newest_selection_head: Option<DisplayPoint>,
2878 start_row: DisplayRow,
2879 line_layouts: &[LineWithInvisibles],
2880 line_height: Pixels,
2881 em_width: Pixels,
2882 cx: &mut WindowContext,
2883 ) {
2884 if !self.editor.focus_handle(cx).is_focused(cx) {
2885 return;
2886 }
2887 let Some(newest_selection_head) = newest_selection_head else {
2888 return;
2889 };
2890 let selection_row = newest_selection_head.row();
2891 if selection_row < start_row {
2892 return;
2893 }
2894 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
2895 else {
2896 return;
2897 };
2898
2899 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
2900 - scroll_pixel_position.x
2901 + content_origin.x;
2902 let start_y =
2903 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
2904
2905 let max_size = size(
2906 (120. * em_width) // Default size
2907 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2908 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2909 (16. * line_height) // Default size
2910 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2911 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2912 );
2913
2914 let maybe_element = self.editor.update(cx, |editor, cx| {
2915 if let Some(popover) = editor.signature_help_state.popover_mut() {
2916 let element = popover.render(
2917 &self.style,
2918 max_size,
2919 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2920 cx,
2921 );
2922 Some(element)
2923 } else {
2924 None
2925 }
2926 });
2927 if let Some(mut element) = maybe_element {
2928 let window_size = cx.viewport_size();
2929 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
2930 let mut point = point(start_x, start_y - size.height);
2931
2932 // Adjusting to ensure the popover does not overflow in the X-axis direction.
2933 if point.x + size.width >= window_size.width {
2934 point.x = window_size.width - size.width;
2935 }
2936
2937 cx.defer_draw(element, point, 1)
2938 }
2939 }
2940
2941 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
2942 cx.paint_layer(layout.hitbox.bounds, |cx| {
2943 let scroll_top = layout.position_map.snapshot.scroll_position().y;
2944 let gutter_bg = cx.theme().colors().editor_gutter_background;
2945 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
2946 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
2947
2948 if let EditorMode::Full = layout.mode {
2949 let mut active_rows = layout.active_rows.iter().peekable();
2950 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
2951 let mut end_row = start_row.0;
2952 while active_rows
2953 .peek()
2954 .map_or(false, |(active_row, has_selection)| {
2955 active_row.0 == end_row + 1
2956 && *has_selection == contains_non_empty_selection
2957 })
2958 {
2959 active_rows.next().unwrap();
2960 end_row += 1;
2961 }
2962
2963 if !contains_non_empty_selection {
2964 let highlight_h_range =
2965 match layout.position_map.snapshot.current_line_highlight {
2966 CurrentLineHighlight::Gutter => Some(Range {
2967 start: layout.hitbox.left(),
2968 end: layout.gutter_hitbox.right(),
2969 }),
2970 CurrentLineHighlight::Line => Some(Range {
2971 start: layout.text_hitbox.bounds.left(),
2972 end: layout.text_hitbox.bounds.right(),
2973 }),
2974 CurrentLineHighlight::All => Some(Range {
2975 start: layout.hitbox.left(),
2976 end: layout.hitbox.right(),
2977 }),
2978 CurrentLineHighlight::None => None,
2979 };
2980 if let Some(range) = highlight_h_range {
2981 let active_line_bg = cx.theme().colors().editor_active_line_background;
2982 let bounds = Bounds {
2983 origin: point(
2984 range.start,
2985 layout.hitbox.origin.y
2986 + (start_row.as_f32() - scroll_top)
2987 * layout.position_map.line_height,
2988 ),
2989 size: size(
2990 range.end - range.start,
2991 layout.position_map.line_height
2992 * (end_row - start_row.0 + 1) as f32,
2993 ),
2994 };
2995 cx.paint_quad(fill(bounds, active_line_bg));
2996 }
2997 }
2998 }
2999
3000 let mut paint_highlight =
3001 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
3002 let origin = point(
3003 layout.hitbox.origin.x,
3004 layout.hitbox.origin.y
3005 + (highlight_row_start.as_f32() - scroll_top)
3006 * layout.position_map.line_height,
3007 );
3008 let size = size(
3009 layout.hitbox.size.width,
3010 layout.position_map.line_height
3011 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
3012 );
3013 cx.paint_quad(fill(Bounds { origin, size }, color));
3014 };
3015
3016 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
3017 for (&new_row, &new_color) in &layout.highlighted_rows {
3018 match &mut current_paint {
3019 Some((current_color, current_range)) => {
3020 let current_color = *current_color;
3021 let new_range_started = current_color != new_color
3022 || current_range.end.next_row() != new_row;
3023 if new_range_started {
3024 paint_highlight(
3025 current_range.start,
3026 current_range.end,
3027 current_color,
3028 );
3029 current_paint = Some((new_color, new_row..new_row));
3030 continue;
3031 } else {
3032 current_range.end = current_range.end.next_row();
3033 }
3034 }
3035 None => current_paint = Some((new_color, new_row..new_row)),
3036 };
3037 }
3038 if let Some((color, range)) = current_paint {
3039 paint_highlight(range.start, range.end, color);
3040 }
3041
3042 let scroll_left =
3043 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
3044
3045 for (wrap_position, active) in layout.wrap_guides.iter() {
3046 let x = (layout.text_hitbox.origin.x
3047 + *wrap_position
3048 + layout.position_map.em_width / 2.)
3049 - scroll_left;
3050
3051 let show_scrollbars = layout
3052 .scrollbar_layout
3053 .as_ref()
3054 .map_or(false, |scrollbar| scrollbar.visible);
3055 if x < layout.text_hitbox.origin.x
3056 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
3057 {
3058 continue;
3059 }
3060
3061 let color = if *active {
3062 cx.theme().colors().editor_active_wrap_guide
3063 } else {
3064 cx.theme().colors().editor_wrap_guide
3065 };
3066 cx.paint_quad(fill(
3067 Bounds {
3068 origin: point(x, layout.text_hitbox.origin.y),
3069 size: size(px(1.), layout.text_hitbox.size.height),
3070 },
3071 color,
3072 ));
3073 }
3074 }
3075 })
3076 }
3077
3078 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3079 let Some(indent_guides) = &layout.indent_guides else {
3080 return;
3081 };
3082
3083 let faded_color = |color: Hsla, alpha: f32| {
3084 let mut faded = color;
3085 faded.a = alpha;
3086 faded
3087 };
3088
3089 for indent_guide in indent_guides {
3090 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3091 let settings = indent_guide.settings;
3092
3093 // TODO fixed for now, expose them through themes later
3094 const INDENT_AWARE_ALPHA: f32 = 0.2;
3095 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3096 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3097 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3098
3099 let line_color = match (settings.coloring, indent_guide.active) {
3100 (IndentGuideColoring::Disabled, _) => None,
3101 (IndentGuideColoring::Fixed, false) => {
3102 Some(cx.theme().colors().editor_indent_guide)
3103 }
3104 (IndentGuideColoring::Fixed, true) => {
3105 Some(cx.theme().colors().editor_indent_guide_active)
3106 }
3107 (IndentGuideColoring::IndentAware, false) => {
3108 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3109 }
3110 (IndentGuideColoring::IndentAware, true) => {
3111 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3112 }
3113 };
3114
3115 let background_color = match (settings.background_coloring, indent_guide.active) {
3116 (IndentGuideBackgroundColoring::Disabled, _) => None,
3117 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3118 indent_accent_colors,
3119 INDENT_AWARE_BACKGROUND_ALPHA,
3120 )),
3121 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3122 indent_accent_colors,
3123 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3124 )),
3125 };
3126
3127 let requested_line_width = if indent_guide.active {
3128 settings.active_line_width
3129 } else {
3130 settings.line_width
3131 }
3132 .clamp(1, 10);
3133 let mut line_indicator_width = 0.;
3134 if let Some(color) = line_color {
3135 cx.paint_quad(fill(
3136 Bounds {
3137 origin: indent_guide.origin,
3138 size: size(px(requested_line_width as f32), indent_guide.length),
3139 },
3140 color,
3141 ));
3142 line_indicator_width = requested_line_width as f32;
3143 }
3144
3145 if let Some(color) = background_color {
3146 let width = indent_guide.single_indent_width - px(line_indicator_width);
3147 cx.paint_quad(fill(
3148 Bounds {
3149 origin: point(
3150 indent_guide.origin.x + px(line_indicator_width),
3151 indent_guide.origin.y,
3152 ),
3153 size: size(width, indent_guide.length),
3154 },
3155 color,
3156 ));
3157 }
3158 }
3159 }
3160
3161 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3162 let line_height = layout.position_map.line_height;
3163 let scroll_position = layout.position_map.snapshot.scroll_position();
3164 let scroll_top = scroll_position.y * line_height;
3165
3166 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3167
3168 for (ix, line) in layout.line_numbers.iter().enumerate() {
3169 if let Some(line) = line {
3170 let line_origin = layout.gutter_hitbox.origin
3171 + point(
3172 layout.gutter_hitbox.size.width
3173 - line.width
3174 - layout.gutter_dimensions.right_padding,
3175 ix as f32 * line_height - (scroll_top % line_height),
3176 );
3177
3178 line.paint(line_origin, line_height, cx).log_err();
3179 }
3180 }
3181 }
3182
3183 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
3184 if layout.display_hunks.is_empty() {
3185 return;
3186 }
3187
3188 let line_height = layout.position_map.line_height;
3189 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3190 for (hunk, hitbox) in &layout.display_hunks {
3191 let hunk_to_paint = match hunk {
3192 DisplayDiffHunk::Folded { .. } => {
3193 let hunk_bounds = Self::diff_hunk_bounds(
3194 &layout.position_map.snapshot,
3195 line_height,
3196 layout.gutter_hitbox.bounds,
3197 &hunk,
3198 );
3199 Some((
3200 hunk_bounds,
3201 cx.theme().status().modified,
3202 Corners::all(1. * line_height),
3203 ))
3204 }
3205 DisplayDiffHunk::Unfolded { status, .. } => {
3206 hitbox.as_ref().map(|hunk_hitbox| match status {
3207 DiffHunkStatus::Added => (
3208 hunk_hitbox.bounds,
3209 cx.theme().status().created,
3210 Corners::all(0.05 * line_height),
3211 ),
3212 DiffHunkStatus::Modified => (
3213 hunk_hitbox.bounds,
3214 cx.theme().status().modified,
3215 Corners::all(0.05 * line_height),
3216 ),
3217 DiffHunkStatus::Removed => (
3218 Bounds::new(
3219 point(
3220 hunk_hitbox.origin.x - hunk_hitbox.size.width,
3221 hunk_hitbox.origin.y,
3222 ),
3223 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
3224 ),
3225 cx.theme().status().deleted,
3226 Corners::all(1. * line_height),
3227 ),
3228 })
3229 }
3230 };
3231
3232 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
3233 cx.paint_quad(quad(
3234 hunk_bounds,
3235 corner_radii,
3236 background_color,
3237 Edges::default(),
3238 transparent_black(),
3239 ));
3240 }
3241 }
3242 });
3243 }
3244
3245 pub(super) fn diff_hunk_bounds(
3246 snapshot: &EditorSnapshot,
3247 line_height: Pixels,
3248 gutter_bounds: Bounds<Pixels>,
3249 hunk: &DisplayDiffHunk,
3250 ) -> Bounds<Pixels> {
3251 let scroll_position = snapshot.scroll_position();
3252 let scroll_top = scroll_position.y * line_height;
3253
3254 match hunk {
3255 DisplayDiffHunk::Folded { display_row, .. } => {
3256 let start_y = display_row.as_f32() * line_height - scroll_top;
3257 let end_y = start_y + line_height;
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 DisplayDiffHunk::Unfolded {
3265 display_row_range,
3266 status,
3267 ..
3268 } => match status {
3269 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
3270 let start_row = display_row_range.start;
3271 let end_row = display_row_range.end;
3272 // If we're in a multibuffer, row range span might include an
3273 // excerpt header, so if we were to draw the marker straight away,
3274 // the hunk might include the rows of that header.
3275 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
3276 // Instead, we simply check whether the range we're dealing with includes
3277 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
3278 let end_row_in_current_excerpt = snapshot
3279 .blocks_in_range(start_row..end_row)
3280 .find_map(|(start_row, block)| {
3281 if matches!(block, Block::ExcerptHeader { .. }) {
3282 Some(start_row)
3283 } else {
3284 None
3285 }
3286 })
3287 .unwrap_or(end_row);
3288
3289 let start_y = start_row.as_f32() * line_height - scroll_top;
3290 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
3291
3292 let width = 0.275 * line_height;
3293 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3294 let highlight_size = size(width, end_y - start_y);
3295 Bounds::new(highlight_origin, highlight_size)
3296 }
3297 DiffHunkStatus::Removed => {
3298 let row = display_row_range.start;
3299
3300 let offset = line_height / 2.;
3301 let start_y = row.as_f32() * line_height - offset - scroll_top;
3302 let end_y = start_y + line_height;
3303
3304 let width = 0.35 * line_height;
3305 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3306 let highlight_size = size(width, end_y - start_y);
3307 Bounds::new(highlight_origin, highlight_size)
3308 }
3309 },
3310 }
3311 }
3312
3313 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3314 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3315 cx.with_element_namespace("gutter_fold_toggles", |cx| {
3316 for fold_indicator in layout.gutter_fold_toggles.iter_mut().flatten() {
3317 fold_indicator.paint(cx);
3318 }
3319 });
3320
3321 for test_indicator in layout.test_indicators.iter_mut() {
3322 test_indicator.paint(cx);
3323 }
3324 for close_indicator in layout.close_indicators.iter_mut() {
3325 close_indicator.paint(cx);
3326 }
3327
3328 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
3329 indicator.paint(cx);
3330 }
3331 });
3332 }
3333
3334 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3335 for (_, hunk_hitbox) in &layout.display_hunks {
3336 if let Some(hunk_hitbox) = hunk_hitbox {
3337 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
3338 }
3339 }
3340
3341 let show_git_gutter = layout
3342 .position_map
3343 .snapshot
3344 .show_git_diff_gutter
3345 .unwrap_or_else(|| {
3346 matches!(
3347 ProjectSettings::get_global(cx).git.git_gutter,
3348 Some(GitGutterSetting::TrackedFiles)
3349 )
3350 });
3351 if show_git_gutter {
3352 Self::paint_diff_hunks(layout, cx)
3353 }
3354
3355 let highlight_width = 0.275 * layout.position_map.line_height;
3356 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
3357 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3358 for (range, color) in &layout.highlighted_gutter_ranges {
3359 let start_row = if range.start.row() < layout.visible_display_row_range.start {
3360 layout.visible_display_row_range.start - DisplayRow(1)
3361 } else {
3362 range.start.row()
3363 };
3364 let end_row = if range.end.row() > layout.visible_display_row_range.end {
3365 layout.visible_display_row_range.end + DisplayRow(1)
3366 } else {
3367 range.end.row()
3368 };
3369
3370 let start_y = layout.gutter_hitbox.top()
3371 + start_row.0 as f32 * layout.position_map.line_height
3372 - layout.position_map.scroll_pixel_position.y;
3373 let end_y = layout.gutter_hitbox.top()
3374 + (end_row.0 + 1) as f32 * layout.position_map.line_height
3375 - layout.position_map.scroll_pixel_position.y;
3376 let bounds = Bounds::from_corners(
3377 point(layout.gutter_hitbox.left(), start_y),
3378 point(layout.gutter_hitbox.left() + highlight_width, end_y),
3379 );
3380 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
3381 }
3382 });
3383 }
3384
3385 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3386 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
3387 return;
3388 };
3389
3390 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3391 for mut blame_element in blamed_display_rows.into_iter() {
3392 blame_element.paint(cx);
3393 }
3394 })
3395 }
3396
3397 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3398 cx.with_content_mask(
3399 Some(ContentMask {
3400 bounds: layout.text_hitbox.bounds,
3401 }),
3402 |cx| {
3403 let cursor_style = if self
3404 .editor
3405 .read(cx)
3406 .hovered_link_state
3407 .as_ref()
3408 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
3409 {
3410 CursorStyle::PointingHand
3411 } else {
3412 CursorStyle::IBeam
3413 };
3414 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
3415
3416 let invisible_display_ranges = self.paint_highlights(layout, cx);
3417 self.paint_lines(&invisible_display_ranges, layout, cx);
3418 self.paint_redactions(layout, cx);
3419 self.paint_cursors(layout, cx);
3420 self.paint_inline_blame(layout, cx);
3421 cx.with_element_namespace("crease_trailers", |cx| {
3422 for trailer in layout.crease_trailers.iter_mut().flatten() {
3423 trailer.element.paint(cx);
3424 }
3425 });
3426 },
3427 )
3428 }
3429
3430 fn paint_highlights(
3431 &mut self,
3432 layout: &mut EditorLayout,
3433 cx: &mut WindowContext,
3434 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
3435 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3436 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
3437 let line_end_overshoot = 0.15 * layout.position_map.line_height;
3438 for (range, color) in &layout.highlighted_ranges {
3439 self.paint_highlighted_range(
3440 range.clone(),
3441 *color,
3442 Pixels::ZERO,
3443 line_end_overshoot,
3444 layout,
3445 cx,
3446 );
3447 }
3448
3449 let corner_radius = 0.15 * layout.position_map.line_height;
3450
3451 for (player_color, selections) in &layout.selections {
3452 for selection in selections.into_iter() {
3453 self.paint_highlighted_range(
3454 selection.range.clone(),
3455 player_color.selection,
3456 corner_radius,
3457 corner_radius * 2.,
3458 layout,
3459 cx,
3460 );
3461
3462 if selection.is_local && !selection.range.is_empty() {
3463 invisible_display_ranges.push(selection.range.clone());
3464 }
3465 }
3466 }
3467 invisible_display_ranges
3468 })
3469 }
3470
3471 fn paint_lines(
3472 &mut self,
3473 invisible_display_ranges: &[Range<DisplayPoint>],
3474 layout: &mut EditorLayout,
3475 cx: &mut WindowContext,
3476 ) {
3477 let whitespace_setting = self
3478 .editor
3479 .read(cx)
3480 .buffer
3481 .read(cx)
3482 .settings_at(0, cx)
3483 .show_whitespaces;
3484
3485 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
3486 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
3487 line_with_invisibles.draw(
3488 layout,
3489 row,
3490 layout.content_origin,
3491 whitespace_setting,
3492 invisible_display_ranges,
3493 cx,
3494 )
3495 }
3496
3497 for line_element in &mut layout.line_elements {
3498 line_element.paint(cx);
3499 }
3500 }
3501
3502 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3503 if layout.redacted_ranges.is_empty() {
3504 return;
3505 }
3506
3507 let line_end_overshoot = layout.line_end_overshoot();
3508
3509 // A softer than perfect black
3510 let redaction_color = gpui::rgb(0x0e1111);
3511
3512 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3513 for range in layout.redacted_ranges.iter() {
3514 self.paint_highlighted_range(
3515 range.clone(),
3516 redaction_color.into(),
3517 Pixels::ZERO,
3518 line_end_overshoot,
3519 layout,
3520 cx,
3521 );
3522 }
3523 });
3524 }
3525
3526 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3527 for cursor in &mut layout.visible_cursors {
3528 cursor.paint(layout.content_origin, cx);
3529 }
3530 }
3531
3532 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3533 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
3534 return;
3535 };
3536
3537 let thumb_bounds = scrollbar_layout.thumb_bounds();
3538 if scrollbar_layout.visible {
3539 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
3540 cx.paint_quad(quad(
3541 scrollbar_layout.hitbox.bounds,
3542 Corners::default(),
3543 cx.theme().colors().scrollbar_track_background,
3544 Edges {
3545 top: Pixels::ZERO,
3546 right: Pixels::ZERO,
3547 bottom: Pixels::ZERO,
3548 left: ScrollbarLayout::BORDER_WIDTH,
3549 },
3550 cx.theme().colors().scrollbar_track_border,
3551 ));
3552
3553 let fast_markers =
3554 self.collect_fast_scrollbar_markers(layout, scrollbar_layout, cx);
3555 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
3556 self.refresh_slow_scrollbar_markers(layout, scrollbar_layout, cx);
3557
3558 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
3559 for marker in markers.iter().chain(&fast_markers) {
3560 let mut marker = marker.clone();
3561 marker.bounds.origin += scrollbar_layout.hitbox.origin;
3562 cx.paint_quad(marker);
3563 }
3564
3565 cx.paint_quad(quad(
3566 thumb_bounds,
3567 Corners::default(),
3568 cx.theme().colors().scrollbar_thumb_background,
3569 Edges {
3570 top: Pixels::ZERO,
3571 right: Pixels::ZERO,
3572 bottom: Pixels::ZERO,
3573 left: ScrollbarLayout::BORDER_WIDTH,
3574 },
3575 cx.theme().colors().scrollbar_thumb_border,
3576 ));
3577 });
3578 }
3579
3580 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
3581
3582 let row_height = scrollbar_layout.row_height;
3583 let row_range = scrollbar_layout.visible_row_range.clone();
3584
3585 cx.on_mouse_event({
3586 let editor = self.editor.clone();
3587 let hitbox = scrollbar_layout.hitbox.clone();
3588 let mut mouse_position = cx.mouse_position();
3589 move |event: &MouseMoveEvent, phase, cx| {
3590 if phase == DispatchPhase::Capture {
3591 return;
3592 }
3593
3594 editor.update(cx, |editor, cx| {
3595 if event.pressed_button == Some(MouseButton::Left)
3596 && editor.scroll_manager.is_dragging_scrollbar()
3597 {
3598 let y = mouse_position.y;
3599 let new_y = event.position.y;
3600 if (hitbox.top()..hitbox.bottom()).contains(&y) {
3601 let mut position = editor.scroll_position(cx);
3602 position.y += (new_y - y) / row_height;
3603 if position.y < 0.0 {
3604 position.y = 0.0;
3605 }
3606 editor.set_scroll_position(position, cx);
3607 }
3608
3609 cx.stop_propagation();
3610 } else {
3611 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3612 if hitbox.is_hovered(cx) {
3613 editor.scroll_manager.show_scrollbar(cx);
3614 }
3615 }
3616 mouse_position = event.position;
3617 })
3618 }
3619 });
3620
3621 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
3622 cx.on_mouse_event({
3623 let editor = self.editor.clone();
3624 move |_: &MouseUpEvent, phase, cx| {
3625 if phase == DispatchPhase::Capture {
3626 return;
3627 }
3628
3629 editor.update(cx, |editor, cx| {
3630 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
3631 cx.stop_propagation();
3632 });
3633 }
3634 });
3635 } else {
3636 cx.on_mouse_event({
3637 let editor = self.editor.clone();
3638 let hitbox = scrollbar_layout.hitbox.clone();
3639 move |event: &MouseDownEvent, phase, cx| {
3640 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
3641 return;
3642 }
3643
3644 editor.update(cx, |editor, cx| {
3645 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
3646
3647 let y = event.position.y;
3648 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
3649 let center_row = ((y - hitbox.top()) / row_height).round() as u32;
3650 let top_row = center_row
3651 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
3652 let mut position = editor.scroll_position(cx);
3653 position.y = top_row as f32;
3654 editor.set_scroll_position(position, cx);
3655 } else {
3656 editor.scroll_manager.show_scrollbar(cx);
3657 }
3658
3659 cx.stop_propagation();
3660 });
3661 }
3662 });
3663 }
3664 }
3665
3666 fn collect_fast_scrollbar_markers(
3667 &self,
3668 layout: &EditorLayout,
3669 scrollbar_layout: &ScrollbarLayout,
3670 cx: &mut WindowContext,
3671 ) -> Vec<PaintQuad> {
3672 const LIMIT: usize = 100;
3673 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
3674 return vec![];
3675 }
3676 let cursor_ranges = layout
3677 .cursors
3678 .iter()
3679 .map(|(point, color)| ColoredRange {
3680 start: point.row(),
3681 end: point.row(),
3682 color: *color,
3683 })
3684 .collect_vec();
3685 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
3686 }
3687
3688 fn refresh_slow_scrollbar_markers(
3689 &self,
3690 layout: &EditorLayout,
3691 scrollbar_layout: &ScrollbarLayout,
3692 cx: &mut WindowContext,
3693 ) {
3694 self.editor.update(cx, |editor, cx| {
3695 if !editor.is_singleton(cx)
3696 || !editor
3697 .scrollbar_marker_state
3698 .should_refresh(scrollbar_layout.hitbox.size)
3699 {
3700 return;
3701 }
3702
3703 let scrollbar_layout = scrollbar_layout.clone();
3704 let background_highlights = editor.background_highlights.clone();
3705 let snapshot = layout.position_map.snapshot.clone();
3706 let theme = cx.theme().clone();
3707 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
3708
3709 editor.scrollbar_marker_state.dirty = false;
3710 editor.scrollbar_marker_state.pending_refresh =
3711 Some(cx.spawn(|editor, mut cx| async move {
3712 let scrollbar_size = scrollbar_layout.hitbox.size;
3713 let scrollbar_markers = cx
3714 .background_executor()
3715 .spawn(async move {
3716 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
3717 let mut marker_quads = Vec::new();
3718 if scrollbar_settings.git_diff {
3719 let marker_row_ranges = snapshot
3720 .buffer_snapshot
3721 .git_diff_hunks_in_range(
3722 MultiBufferRow::MIN..MultiBufferRow::MAX,
3723 )
3724 .map(|hunk| {
3725 let start_display_row =
3726 MultiBufferPoint::new(hunk.associated_range.start.0, 0)
3727 .to_display_point(&snapshot.display_snapshot)
3728 .row();
3729 let mut end_display_row =
3730 MultiBufferPoint::new(hunk.associated_range.end.0, 0)
3731 .to_display_point(&snapshot.display_snapshot)
3732 .row();
3733 if end_display_row != start_display_row {
3734 end_display_row.0 -= 1;
3735 }
3736 let color = match hunk_status(&hunk) {
3737 DiffHunkStatus::Added => theme.status().created,
3738 DiffHunkStatus::Modified => theme.status().modified,
3739 DiffHunkStatus::Removed => theme.status().deleted,
3740 };
3741 ColoredRange {
3742 start: start_display_row,
3743 end: end_display_row,
3744 color,
3745 }
3746 });
3747
3748 marker_quads.extend(
3749 scrollbar_layout
3750 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
3751 );
3752 }
3753
3754 for (background_highlight_id, (_, background_ranges)) in
3755 background_highlights.iter()
3756 {
3757 let is_search_highlights = *background_highlight_id
3758 == TypeId::of::<BufferSearchHighlights>();
3759 let is_symbol_occurrences = *background_highlight_id
3760 == TypeId::of::<DocumentHighlightRead>()
3761 || *background_highlight_id
3762 == TypeId::of::<DocumentHighlightWrite>();
3763 if (is_search_highlights && scrollbar_settings.search_results)
3764 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
3765 {
3766 let mut color = theme.status().info;
3767 if is_symbol_occurrences {
3768 color.fade_out(0.5);
3769 }
3770 let marker_row_ranges =
3771 background_ranges.into_iter().map(|range| {
3772 let display_start = range
3773 .start
3774 .to_display_point(&snapshot.display_snapshot);
3775 let display_end = range
3776 .end
3777 .to_display_point(&snapshot.display_snapshot);
3778 ColoredRange {
3779 start: display_start.row(),
3780 end: display_end.row(),
3781 color,
3782 }
3783 });
3784 marker_quads.extend(
3785 scrollbar_layout
3786 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
3787 );
3788 }
3789 }
3790
3791 if scrollbar_settings.diagnostics {
3792 let diagnostics = snapshot
3793 .buffer_snapshot
3794 .diagnostics_in_range::<_, Point>(
3795 Point::zero()..max_point,
3796 false,
3797 )
3798 // We want to sort by severity, in order to paint the most severe diagnostics last.
3799 .sorted_by_key(|diagnostic| {
3800 std::cmp::Reverse(diagnostic.diagnostic.severity)
3801 });
3802
3803 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
3804 let start_display = diagnostic
3805 .range
3806 .start
3807 .to_display_point(&snapshot.display_snapshot);
3808 let end_display = diagnostic
3809 .range
3810 .end
3811 .to_display_point(&snapshot.display_snapshot);
3812 let color = match diagnostic.diagnostic.severity {
3813 DiagnosticSeverity::ERROR => theme.status().error,
3814 DiagnosticSeverity::WARNING => theme.status().warning,
3815 DiagnosticSeverity::INFORMATION => theme.status().info,
3816 _ => theme.status().hint,
3817 };
3818 ColoredRange {
3819 start: start_display.row(),
3820 end: end_display.row(),
3821 color,
3822 }
3823 });
3824 marker_quads.extend(
3825 scrollbar_layout
3826 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
3827 );
3828 }
3829
3830 Arc::from(marker_quads)
3831 })
3832 .await;
3833
3834 editor.update(&mut cx, |editor, cx| {
3835 editor.scrollbar_marker_state.markers = scrollbar_markers;
3836 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
3837 editor.scrollbar_marker_state.pending_refresh = None;
3838 cx.notify();
3839 })?;
3840
3841 Ok(())
3842 }));
3843 });
3844 }
3845
3846 #[allow(clippy::too_many_arguments)]
3847 fn paint_highlighted_range(
3848 &self,
3849 range: Range<DisplayPoint>,
3850 color: Hsla,
3851 corner_radius: Pixels,
3852 line_end_overshoot: Pixels,
3853 layout: &EditorLayout,
3854 cx: &mut WindowContext,
3855 ) {
3856 let start_row = layout.visible_display_row_range.start;
3857 let end_row = layout.visible_display_row_range.end;
3858 if range.start != range.end {
3859 let row_range = if range.end.column() == 0 {
3860 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
3861 } else {
3862 cmp::max(range.start.row(), start_row)
3863 ..cmp::min(range.end.row().next_row(), end_row)
3864 };
3865
3866 let highlighted_range = HighlightedRange {
3867 color,
3868 line_height: layout.position_map.line_height,
3869 corner_radius,
3870 start_y: layout.content_origin.y
3871 + row_range.start.as_f32() * layout.position_map.line_height
3872 - layout.position_map.scroll_pixel_position.y,
3873 lines: row_range
3874 .iter_rows()
3875 .map(|row| {
3876 let line_layout =
3877 &layout.position_map.line_layouts[row.minus(start_row) as usize];
3878 HighlightedRangeLine {
3879 start_x: if row == range.start.row() {
3880 layout.content_origin.x
3881 + line_layout.x_for_index(range.start.column() as usize)
3882 - layout.position_map.scroll_pixel_position.x
3883 } else {
3884 layout.content_origin.x
3885 - layout.position_map.scroll_pixel_position.x
3886 },
3887 end_x: if row == range.end.row() {
3888 layout.content_origin.x
3889 + line_layout.x_for_index(range.end.column() as usize)
3890 - layout.position_map.scroll_pixel_position.x
3891 } else {
3892 layout.content_origin.x + line_layout.width + line_end_overshoot
3893 - layout.position_map.scroll_pixel_position.x
3894 },
3895 }
3896 })
3897 .collect(),
3898 };
3899
3900 highlighted_range.paint(layout.text_hitbox.bounds, cx);
3901 }
3902 }
3903
3904 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3905 if let Some(mut inline_blame) = layout.inline_blame.take() {
3906 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
3907 inline_blame.paint(cx);
3908 })
3909 }
3910 }
3911
3912 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3913 for mut block in layout.blocks.drain(..) {
3914 block.element.paint(cx);
3915 }
3916 }
3917
3918 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3919 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
3920 mouse_context_menu.paint(cx);
3921 }
3922 }
3923
3924 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3925 cx.on_mouse_event({
3926 let position_map = layout.position_map.clone();
3927 let editor = self.editor.clone();
3928 let hitbox = layout.hitbox.clone();
3929 let mut delta = ScrollDelta::default();
3930
3931 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
3932 // accidentally turn off their scrolling.
3933 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
3934
3935 move |event: &ScrollWheelEvent, phase, cx| {
3936 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
3937 delta = delta.coalesce(event.delta);
3938 editor.update(cx, |editor, cx| {
3939 let position_map: &PositionMap = &position_map;
3940
3941 let line_height = position_map.line_height;
3942 let max_glyph_width = position_map.em_width;
3943 let (delta, axis) = match delta {
3944 gpui::ScrollDelta::Pixels(mut pixels) => {
3945 //Trackpad
3946 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
3947 (pixels, axis)
3948 }
3949
3950 gpui::ScrollDelta::Lines(lines) => {
3951 //Not trackpad
3952 let pixels =
3953 point(lines.x * max_glyph_width, lines.y * line_height);
3954 (pixels, None)
3955 }
3956 };
3957
3958 let current_scroll_position = position_map.snapshot.scroll_position();
3959 let x = (current_scroll_position.x * max_glyph_width
3960 - (delta.x * scroll_sensitivity))
3961 / max_glyph_width;
3962 let y = (current_scroll_position.y * line_height
3963 - (delta.y * scroll_sensitivity))
3964 / line_height;
3965 let mut scroll_position =
3966 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
3967 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
3968 if forbid_vertical_scroll {
3969 scroll_position.y = current_scroll_position.y;
3970 }
3971
3972 if scroll_position != current_scroll_position {
3973 editor.scroll(scroll_position, axis, cx);
3974 cx.stop_propagation();
3975 } else if y < 0. {
3976 // Due to clamping, we may fail to detect cases of overscroll to the top;
3977 // We want the scroll manager to get an update in such cases and detect the change of direction
3978 // on the next frame.
3979 cx.notify();
3980 }
3981 });
3982 }
3983 }
3984 });
3985 }
3986
3987 fn paint_mouse_listeners(
3988 &mut self,
3989 layout: &EditorLayout,
3990 hovered_hunk: Option<HoveredHunk>,
3991 cx: &mut WindowContext,
3992 ) {
3993 self.paint_scroll_wheel_listener(layout, cx);
3994
3995 cx.on_mouse_event({
3996 let position_map = layout.position_map.clone();
3997 let editor = self.editor.clone();
3998 let text_hitbox = layout.text_hitbox.clone();
3999 let gutter_hitbox = layout.gutter_hitbox.clone();
4000
4001 move |event: &MouseDownEvent, phase, cx| {
4002 if phase == DispatchPhase::Bubble {
4003 match event.button {
4004 MouseButton::Left => editor.update(cx, |editor, cx| {
4005 Self::mouse_left_down(
4006 editor,
4007 event,
4008 hovered_hunk.clone(),
4009 &position_map,
4010 &text_hitbox,
4011 &gutter_hitbox,
4012 cx,
4013 );
4014 }),
4015 MouseButton::Right => editor.update(cx, |editor, cx| {
4016 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
4017 }),
4018 MouseButton::Middle => editor.update(cx, |editor, cx| {
4019 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
4020 }),
4021 _ => {}
4022 };
4023 }
4024 }
4025 });
4026
4027 cx.on_mouse_event({
4028 let editor = self.editor.clone();
4029 let position_map = layout.position_map.clone();
4030 let text_hitbox = layout.text_hitbox.clone();
4031
4032 move |event: &MouseUpEvent, phase, cx| {
4033 if phase == DispatchPhase::Bubble {
4034 editor.update(cx, |editor, cx| {
4035 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
4036 });
4037 }
4038 }
4039 });
4040 cx.on_mouse_event({
4041 let position_map = layout.position_map.clone();
4042 let editor = self.editor.clone();
4043 let text_hitbox = layout.text_hitbox.clone();
4044 let gutter_hitbox = layout.gutter_hitbox.clone();
4045
4046 move |event: &MouseMoveEvent, phase, cx| {
4047 if phase == DispatchPhase::Bubble {
4048 editor.update(cx, |editor, cx| {
4049 if editor.hover_state.focused(cx) {
4050 return;
4051 }
4052 if event.pressed_button == Some(MouseButton::Left)
4053 || event.pressed_button == Some(MouseButton::Middle)
4054 {
4055 Self::mouse_dragged(
4056 editor,
4057 event,
4058 &position_map,
4059 text_hitbox.bounds,
4060 cx,
4061 )
4062 }
4063
4064 Self::mouse_moved(
4065 editor,
4066 event,
4067 &position_map,
4068 &text_hitbox,
4069 &gutter_hitbox,
4070 cx,
4071 )
4072 });
4073 }
4074 }
4075 });
4076 }
4077
4078 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
4079 bounds.upper_right().x - self.style.scrollbar_width
4080 }
4081
4082 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
4083 let style = &self.style;
4084 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4085 let layout = cx
4086 .text_system()
4087 .shape_line(
4088 SharedString::from(" ".repeat(column)),
4089 font_size,
4090 &[TextRun {
4091 len: column,
4092 font: style.text.font(),
4093 color: Hsla::default(),
4094 background_color: None,
4095 underline: None,
4096 strikethrough: None,
4097 }],
4098 )
4099 .unwrap();
4100
4101 layout.width
4102 }
4103
4104 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
4105 let digit_count = snapshot
4106 .max_buffer_row()
4107 .next_row()
4108 .as_f32()
4109 .log10()
4110 .floor() as usize
4111 + 1;
4112 self.column_pixels(digit_count, cx)
4113 }
4114
4115 #[allow(clippy::too_many_arguments)]
4116 fn layout_hunk_diff_close_indicators(
4117 &self,
4118 line_height: Pixels,
4119 scroll_pixel_position: gpui::Point<Pixels>,
4120 gutter_dimensions: &GutterDimensions,
4121 gutter_hitbox: &Hitbox,
4122 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4123 expanded_hunks_by_rows: HashMap<DisplayRow, ExpandedHunk>,
4124 cx: &mut WindowContext,
4125 ) -> Vec<AnyElement> {
4126 self.editor.update(cx, |editor, cx| {
4127 expanded_hunks_by_rows
4128 .into_iter()
4129 .map(|(display_row, hunk)| {
4130 let button = editor.close_hunk_diff_button(
4131 HoveredHunk {
4132 multi_buffer_range: hunk.hunk_range,
4133 status: hunk.status,
4134 diff_base_byte_range: hunk.diff_base_byte_range,
4135 },
4136 display_row,
4137 cx,
4138 );
4139
4140 prepaint_gutter_button(
4141 button,
4142 display_row,
4143 line_height,
4144 gutter_dimensions,
4145 scroll_pixel_position,
4146 gutter_hitbox,
4147 rows_with_hunk_bounds,
4148 cx,
4149 )
4150 })
4151 .collect()
4152 })
4153 }
4154}
4155
4156#[allow(clippy::too_many_arguments)]
4157fn prepaint_gutter_button(
4158 button: IconButton,
4159 row: DisplayRow,
4160 line_height: Pixels,
4161 gutter_dimensions: &GutterDimensions,
4162 scroll_pixel_position: gpui::Point<Pixels>,
4163 gutter_hitbox: &Hitbox,
4164 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4165 cx: &mut WindowContext<'_>,
4166) -> AnyElement {
4167 let mut button = button.into_any_element();
4168 let available_space = size(
4169 AvailableSpace::MinContent,
4170 AvailableSpace::Definite(line_height),
4171 );
4172 let indicator_size = button.layout_as_root(available_space, cx);
4173
4174 let blame_width = gutter_dimensions.git_blame_entries_width;
4175 let gutter_width = rows_with_hunk_bounds
4176 .get(&row)
4177 .map(|bounds| bounds.size.width);
4178 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
4179
4180 let mut x = left_offset;
4181 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
4182 - indicator_size.width
4183 - left_offset;
4184 x += available_width / 2.;
4185
4186 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
4187 y += (line_height - indicator_size.height) / 2.;
4188
4189 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
4190 button
4191}
4192
4193fn render_inline_blame_entry(
4194 blame: &gpui::Model<GitBlame>,
4195 blame_entry: BlameEntry,
4196 style: &EditorStyle,
4197 workspace: Option<WeakView<Workspace>>,
4198 cx: &mut WindowContext<'_>,
4199) -> AnyElement {
4200 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4201
4202 let author = blame_entry.author.as_deref().unwrap_or_default();
4203 let text = format!("{}, {}", author, relative_timestamp);
4204
4205 let details = blame.read(cx).details_for_entry(&blame_entry);
4206
4207 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
4208
4209 h_flex()
4210 .id("inline-blame")
4211 .w_full()
4212 .font_family(style.text.font().family)
4213 .text_color(cx.theme().status().hint)
4214 .line_height(style.text.line_height)
4215 .child(Icon::new(IconName::FileGit).color(Color::Hint))
4216 .child(text)
4217 .gap_2()
4218 .hoverable_tooltip(move |_| tooltip.clone().into())
4219 .into_any()
4220}
4221
4222fn render_blame_entry(
4223 ix: usize,
4224 blame: &gpui::Model<GitBlame>,
4225 blame_entry: BlameEntry,
4226 style: &EditorStyle,
4227 last_used_color: &mut Option<(PlayerColor, Oid)>,
4228 editor: View<Editor>,
4229 cx: &mut WindowContext<'_>,
4230) -> AnyElement {
4231 let mut sha_color = cx
4232 .theme()
4233 .players()
4234 .color_for_participant(blame_entry.sha.into());
4235 // If the last color we used is the same as the one we get for this line, but
4236 // the commit SHAs are different, then we try again to get a different color.
4237 match *last_used_color {
4238 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
4239 let index: u32 = blame_entry.sha.into();
4240 sha_color = cx.theme().players().color_for_participant(index + 1);
4241 }
4242 _ => {}
4243 };
4244 last_used_color.replace((sha_color, blame_entry.sha));
4245
4246 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
4247
4248 let short_commit_id = blame_entry.sha.display_short();
4249
4250 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
4251 let name = util::truncate_and_trailoff(author_name, 20);
4252
4253 let details = blame.read(cx).details_for_entry(&blame_entry);
4254
4255 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
4256
4257 let tooltip = cx.new_view(|_| {
4258 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
4259 });
4260
4261 h_flex()
4262 .w_full()
4263 .font_family(style.text.font().family)
4264 .line_height(style.text.line_height)
4265 .id(("blame", ix))
4266 .children([
4267 div()
4268 .text_color(sha_color.cursor)
4269 .child(short_commit_id)
4270 .mr_2(),
4271 div()
4272 .w_full()
4273 .h_flex()
4274 .justify_between()
4275 .text_color(cx.theme().status().hint)
4276 .child(name)
4277 .child(relative_timestamp),
4278 ])
4279 .on_mouse_down(MouseButton::Right, {
4280 let blame_entry = blame_entry.clone();
4281 let details = details.clone();
4282 move |event, cx| {
4283 deploy_blame_entry_context_menu(
4284 &blame_entry,
4285 details.as_ref(),
4286 editor.clone(),
4287 event.position,
4288 cx,
4289 );
4290 }
4291 })
4292 .hover(|style| style.bg(cx.theme().colors().element_hover))
4293 .when_some(
4294 details.and_then(|details| details.permalink),
4295 |this, url| {
4296 let url = url.clone();
4297 this.cursor_pointer().on_click(move |_, cx| {
4298 cx.stop_propagation();
4299 cx.open_url(url.as_str())
4300 })
4301 },
4302 )
4303 .hoverable_tooltip(move |_| tooltip.clone().into())
4304 .into_any()
4305}
4306
4307fn deploy_blame_entry_context_menu(
4308 blame_entry: &BlameEntry,
4309 details: Option<&CommitDetails>,
4310 editor: View<Editor>,
4311 position: gpui::Point<Pixels>,
4312 cx: &mut WindowContext<'_>,
4313) {
4314 let context_menu = ContextMenu::build(cx, move |menu, _| {
4315 let sha = format!("{}", blame_entry.sha);
4316 menu.on_blur_subscription(Subscription::new(|| {}))
4317 .entry("Copy commit SHA", None, move |cx| {
4318 cx.write_to_clipboard(ClipboardItem::new_string(sha.clone()));
4319 })
4320 .when_some(
4321 details.and_then(|details| details.permalink.clone()),
4322 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
4323 )
4324 });
4325
4326 editor.update(cx, move |editor, cx| {
4327 editor.mouse_context_menu = Some(MouseContextMenu::pinned_to_screen(
4328 position,
4329 context_menu,
4330 cx,
4331 ));
4332 cx.notify();
4333 });
4334}
4335
4336#[derive(Debug)]
4337pub(crate) struct LineWithInvisibles {
4338 fragments: SmallVec<[LineFragment; 1]>,
4339 invisibles: Vec<Invisible>,
4340 len: usize,
4341 width: Pixels,
4342 font_size: Pixels,
4343}
4344
4345#[allow(clippy::large_enum_variant)]
4346enum LineFragment {
4347 Text(ShapedLine),
4348 Element {
4349 element: Option<AnyElement>,
4350 size: Size<Pixels>,
4351 len: usize,
4352 },
4353}
4354
4355impl fmt::Debug for LineFragment {
4356 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
4357 match self {
4358 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
4359 LineFragment::Element { size, len, .. } => f
4360 .debug_struct("Element")
4361 .field("size", size)
4362 .field("len", len)
4363 .finish(),
4364 }
4365 }
4366}
4367
4368impl LineWithInvisibles {
4369 #[allow(clippy::too_many_arguments)]
4370 fn from_chunks<'a>(
4371 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
4372 text_style: &TextStyle,
4373 max_line_len: usize,
4374 max_line_count: usize,
4375 line_number_layouts: &[Option<ShapedLine>],
4376 editor_mode: EditorMode,
4377 text_width: Pixels,
4378 cx: &mut WindowContext,
4379 ) -> Vec<Self> {
4380 let mut layouts = Vec::with_capacity(max_line_count);
4381 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
4382 let mut line = String::new();
4383 let mut invisibles = Vec::new();
4384 let mut width = Pixels::ZERO;
4385 let mut len = 0;
4386 let mut styles = Vec::new();
4387 let mut non_whitespace_added = false;
4388 let mut row = 0;
4389 let mut line_exceeded_max_len = false;
4390 let font_size = text_style.font_size.to_pixels(cx.rem_size());
4391
4392 let ellipsis = SharedString::from("⋯");
4393
4394 for highlighted_chunk in chunks.chain([HighlightedChunk {
4395 text: "\n",
4396 style: None,
4397 is_tab: false,
4398 renderer: None,
4399 }]) {
4400 if let Some(renderer) = highlighted_chunk.renderer {
4401 if !line.is_empty() {
4402 let shaped_line = cx
4403 .text_system()
4404 .shape_line(line.clone().into(), font_size, &styles)
4405 .unwrap();
4406 width += shaped_line.width;
4407 len += shaped_line.len;
4408 fragments.push(LineFragment::Text(shaped_line));
4409 line.clear();
4410 styles.clear();
4411 }
4412
4413 let available_width = if renderer.constrain_width {
4414 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
4415 ellipsis.clone()
4416 } else {
4417 SharedString::from(Arc::from(highlighted_chunk.text))
4418 };
4419 let shaped_line = cx
4420 .text_system()
4421 .shape_line(
4422 chunk,
4423 font_size,
4424 &[text_style.to_run(highlighted_chunk.text.len())],
4425 )
4426 .unwrap();
4427 AvailableSpace::Definite(shaped_line.width)
4428 } else {
4429 AvailableSpace::MinContent
4430 };
4431
4432 let mut element = (renderer.render)(&mut ChunkRendererContext {
4433 context: cx,
4434 max_width: text_width,
4435 });
4436 let line_height = text_style.line_height_in_pixels(cx.rem_size());
4437 let size = element.layout_as_root(
4438 size(available_width, AvailableSpace::Definite(line_height)),
4439 cx,
4440 );
4441
4442 width += size.width;
4443 len += highlighted_chunk.text.len();
4444 fragments.push(LineFragment::Element {
4445 element: Some(element),
4446 size,
4447 len: highlighted_chunk.text.len(),
4448 });
4449 } else {
4450 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
4451 if ix > 0 {
4452 let shaped_line = cx
4453 .text_system()
4454 .shape_line(line.clone().into(), font_size, &styles)
4455 .unwrap();
4456 width += shaped_line.width;
4457 len += shaped_line.len;
4458 fragments.push(LineFragment::Text(shaped_line));
4459 layouts.push(Self {
4460 width: mem::take(&mut width),
4461 len: mem::take(&mut len),
4462 fragments: mem::take(&mut fragments),
4463 invisibles: std::mem::take(&mut invisibles),
4464 font_size,
4465 });
4466
4467 line.clear();
4468 styles.clear();
4469 row += 1;
4470 line_exceeded_max_len = false;
4471 non_whitespace_added = false;
4472 if row == max_line_count {
4473 return layouts;
4474 }
4475 }
4476
4477 if !line_chunk.is_empty() && !line_exceeded_max_len {
4478 let text_style = if let Some(style) = highlighted_chunk.style {
4479 Cow::Owned(text_style.clone().highlight(style))
4480 } else {
4481 Cow::Borrowed(text_style)
4482 };
4483
4484 if line.len() + line_chunk.len() > max_line_len {
4485 let mut chunk_len = max_line_len - line.len();
4486 while !line_chunk.is_char_boundary(chunk_len) {
4487 chunk_len -= 1;
4488 }
4489 line_chunk = &line_chunk[..chunk_len];
4490 line_exceeded_max_len = true;
4491 }
4492
4493 styles.push(TextRun {
4494 len: line_chunk.len(),
4495 font: text_style.font(),
4496 color: text_style.color,
4497 background_color: text_style.background_color,
4498 underline: text_style.underline,
4499 strikethrough: text_style.strikethrough,
4500 });
4501
4502 if editor_mode == EditorMode::Full {
4503 // Line wrap pads its contents with fake whitespaces,
4504 // avoid printing them
4505 let inside_wrapped_string = line_number_layouts
4506 .get(row)
4507 .and_then(|layout| layout.as_ref())
4508 .is_none();
4509 if highlighted_chunk.is_tab {
4510 if non_whitespace_added || !inside_wrapped_string {
4511 invisibles.push(Invisible::Tab {
4512 line_start_offset: line.len(),
4513 line_end_offset: line.len() + line_chunk.len(),
4514 });
4515 }
4516 } else {
4517 invisibles.extend(
4518 line_chunk
4519 .bytes()
4520 .enumerate()
4521 .filter(|(_, line_byte)| {
4522 let is_whitespace =
4523 (*line_byte as char).is_whitespace();
4524 non_whitespace_added |= !is_whitespace;
4525 is_whitespace
4526 && (non_whitespace_added || !inside_wrapped_string)
4527 })
4528 .map(|(whitespace_index, _)| Invisible::Whitespace {
4529 line_offset: line.len() + whitespace_index,
4530 }),
4531 )
4532 }
4533 }
4534
4535 line.push_str(line_chunk);
4536 }
4537 }
4538 }
4539 }
4540
4541 layouts
4542 }
4543
4544 fn prepaint(
4545 &mut self,
4546 line_height: Pixels,
4547 scroll_pixel_position: gpui::Point<Pixels>,
4548 row: DisplayRow,
4549 content_origin: gpui::Point<Pixels>,
4550 line_elements: &mut SmallVec<[AnyElement; 1]>,
4551 cx: &mut WindowContext,
4552 ) {
4553 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
4554 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
4555 for fragment in &mut self.fragments {
4556 match fragment {
4557 LineFragment::Text(line) => {
4558 fragment_origin.x += line.width;
4559 }
4560 LineFragment::Element { element, size, .. } => {
4561 let mut element = element
4562 .take()
4563 .expect("you can't prepaint LineWithInvisibles twice");
4564
4565 // Center the element vertically within the line.
4566 let mut element_origin = fragment_origin;
4567 element_origin.y += (line_height - size.height) / 2.;
4568 element.prepaint_at(element_origin, cx);
4569 line_elements.push(element);
4570
4571 fragment_origin.x += size.width;
4572 }
4573 }
4574 }
4575 }
4576
4577 fn draw(
4578 &self,
4579 layout: &EditorLayout,
4580 row: DisplayRow,
4581 content_origin: gpui::Point<Pixels>,
4582 whitespace_setting: ShowWhitespaceSetting,
4583 selection_ranges: &[Range<DisplayPoint>],
4584 cx: &mut WindowContext,
4585 ) {
4586 let line_height = layout.position_map.line_height;
4587 let line_y = line_height
4588 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
4589
4590 let mut fragment_origin =
4591 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
4592
4593 for fragment in &self.fragments {
4594 match fragment {
4595 LineFragment::Text(line) => {
4596 line.paint(fragment_origin, line_height, cx).log_err();
4597 fragment_origin.x += line.width;
4598 }
4599 LineFragment::Element { size, .. } => {
4600 fragment_origin.x += size.width;
4601 }
4602 }
4603 }
4604
4605 self.draw_invisibles(
4606 &selection_ranges,
4607 layout,
4608 content_origin,
4609 line_y,
4610 row,
4611 line_height,
4612 whitespace_setting,
4613 cx,
4614 );
4615 }
4616
4617 #[allow(clippy::too_many_arguments)]
4618 fn draw_invisibles(
4619 &self,
4620 selection_ranges: &[Range<DisplayPoint>],
4621 layout: &EditorLayout,
4622 content_origin: gpui::Point<Pixels>,
4623 line_y: Pixels,
4624 row: DisplayRow,
4625 line_height: Pixels,
4626 whitespace_setting: ShowWhitespaceSetting,
4627 cx: &mut WindowContext,
4628 ) {
4629 let extract_whitespace_info = |invisible: &Invisible| {
4630 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
4631 Invisible::Tab {
4632 line_start_offset,
4633 line_end_offset,
4634 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
4635 Invisible::Whitespace { line_offset } => {
4636 (*line_offset, line_offset + 1, &layout.space_invisible)
4637 }
4638 };
4639
4640 let x_offset = self.x_for_index(token_offset);
4641 let invisible_offset =
4642 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
4643 let origin = content_origin
4644 + gpui::point(
4645 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
4646 line_y,
4647 );
4648
4649 (
4650 [token_offset, token_end_offset],
4651 Box::new(move |cx: &mut WindowContext| {
4652 invisible_symbol.paint(origin, line_height, cx).log_err();
4653 }),
4654 )
4655 };
4656
4657 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
4658 match whitespace_setting {
4659 ShowWhitespaceSetting::None => return,
4660 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
4661 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
4662 let invisible_point = DisplayPoint::new(row, start as u32);
4663 if !selection_ranges
4664 .iter()
4665 .any(|region| region.start <= invisible_point && invisible_point < region.end)
4666 {
4667 return;
4668 }
4669
4670 paint(cx);
4671 }),
4672
4673 // For a whitespace to be on a boundary, any of the following conditions need to be met:
4674 // - It is a tab
4675 // - It is adjacent to an edge (start or end)
4676 // - It is adjacent to a whitespace (left or right)
4677 ShowWhitespaceSetting::Boundary => {
4678 // 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
4679 // the above cases.
4680 // Note: We zip in the original `invisibles` to check for tab equality
4681 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
4682 for (([start, end], paint), invisible) in
4683 invisible_iter.zip_eq(self.invisibles.iter())
4684 {
4685 let should_render = match (&last_seen, invisible) {
4686 (_, Invisible::Tab { .. }) => true,
4687 (Some((_, last_end, _)), _) => *last_end == start,
4688 _ => false,
4689 };
4690
4691 if should_render || start == 0 || end == self.len {
4692 paint(cx);
4693
4694 // Since we are scanning from the left, we will skip over the first available whitespace that is part
4695 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
4696 if let Some((should_render_last, last_end, paint_last)) = last_seen {
4697 // Note that we need to make sure that the last one is actually adjacent
4698 if !should_render_last && last_end == start {
4699 paint_last(cx);
4700 }
4701 }
4702 }
4703
4704 // Manually render anything within a selection
4705 let invisible_point = DisplayPoint::new(row, start as u32);
4706 if selection_ranges.iter().any(|region| {
4707 region.start <= invisible_point && invisible_point < region.end
4708 }) {
4709 paint(cx);
4710 }
4711
4712 last_seen = Some((should_render, end, paint));
4713 }
4714 }
4715 };
4716 }
4717
4718 pub fn x_for_index(&self, index: usize) -> Pixels {
4719 let mut fragment_start_x = Pixels::ZERO;
4720 let mut fragment_start_index = 0;
4721
4722 for fragment in &self.fragments {
4723 match fragment {
4724 LineFragment::Text(shaped_line) => {
4725 let fragment_end_index = fragment_start_index + shaped_line.len;
4726 if index < fragment_end_index {
4727 return fragment_start_x
4728 + shaped_line.x_for_index(index - fragment_start_index);
4729 }
4730 fragment_start_x += shaped_line.width;
4731 fragment_start_index = fragment_end_index;
4732 }
4733 LineFragment::Element { len, size, .. } => {
4734 let fragment_end_index = fragment_start_index + len;
4735 if index < fragment_end_index {
4736 return fragment_start_x;
4737 }
4738 fragment_start_x += size.width;
4739 fragment_start_index = fragment_end_index;
4740 }
4741 }
4742 }
4743
4744 fragment_start_x
4745 }
4746
4747 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
4748 let mut fragment_start_x = Pixels::ZERO;
4749 let mut fragment_start_index = 0;
4750
4751 for fragment in &self.fragments {
4752 match fragment {
4753 LineFragment::Text(shaped_line) => {
4754 let fragment_end_x = fragment_start_x + shaped_line.width;
4755 if x < fragment_end_x {
4756 return Some(
4757 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
4758 );
4759 }
4760 fragment_start_x = fragment_end_x;
4761 fragment_start_index += shaped_line.len;
4762 }
4763 LineFragment::Element { len, size, .. } => {
4764 let fragment_end_x = fragment_start_x + size.width;
4765 if x < fragment_end_x {
4766 return Some(fragment_start_index);
4767 }
4768 fragment_start_index += len;
4769 fragment_start_x = fragment_end_x;
4770 }
4771 }
4772 }
4773
4774 None
4775 }
4776
4777 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
4778 let mut fragment_start_index = 0;
4779
4780 for fragment in &self.fragments {
4781 match fragment {
4782 LineFragment::Text(shaped_line) => {
4783 let fragment_end_index = fragment_start_index + shaped_line.len;
4784 if index < fragment_end_index {
4785 return shaped_line.font_id_for_index(index - fragment_start_index);
4786 }
4787 fragment_start_index = fragment_end_index;
4788 }
4789 LineFragment::Element { len, .. } => {
4790 let fragment_end_index = fragment_start_index + len;
4791 if index < fragment_end_index {
4792 return None;
4793 }
4794 fragment_start_index = fragment_end_index;
4795 }
4796 }
4797 }
4798
4799 None
4800 }
4801}
4802
4803#[derive(Debug, Clone, Copy, PartialEq, Eq)]
4804enum Invisible {
4805 /// A tab character
4806 ///
4807 /// A tab character is internally represented by spaces (configured by the user's tab width)
4808 /// aligned to the nearest column, so it's necessary to store the start and end offset for
4809 /// adjacency checks.
4810 Tab {
4811 line_start_offset: usize,
4812 line_end_offset: usize,
4813 },
4814 Whitespace {
4815 line_offset: usize,
4816 },
4817}
4818
4819impl EditorElement {
4820 /// Returns the rem size to use when rendering the [`EditorElement`].
4821 ///
4822 /// This allows UI elements to scale based on the `buffer_font_size`.
4823 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
4824 match self.editor.read(cx).mode {
4825 EditorMode::Full => {
4826 let buffer_font_size = self.style.text.font_size;
4827 match buffer_font_size {
4828 AbsoluteLength::Pixels(pixels) => {
4829 let rem_size_scale = {
4830 // Our default UI font size is 14px on a 16px base scale.
4831 // This means the default UI font size is 0.875rems.
4832 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
4833
4834 // We then determine the delta between a single rem and the default font
4835 // size scale.
4836 let default_font_size_delta = 1. - default_font_size_scale;
4837
4838 // Finally, we add this delta to 1rem to get the scale factor that
4839 // should be used to scale up the UI.
4840 1. + default_font_size_delta
4841 };
4842
4843 Some(pixels * rem_size_scale)
4844 }
4845 AbsoluteLength::Rems(rems) => {
4846 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
4847 }
4848 }
4849 }
4850 // We currently use single-line and auto-height editors in UI contexts,
4851 // so we don't want to scale everything with the buffer font size, as it
4852 // ends up looking off.
4853 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
4854 }
4855 }
4856}
4857
4858impl Element for EditorElement {
4859 type RequestLayoutState = ();
4860 type PrepaintState = EditorLayout;
4861
4862 fn id(&self) -> Option<ElementId> {
4863 None
4864 }
4865
4866 fn request_layout(
4867 &mut self,
4868 _: Option<&GlobalElementId>,
4869 cx: &mut WindowContext,
4870 ) -> (gpui::LayoutId, ()) {
4871 let rem_size = self.rem_size(cx);
4872 cx.with_rem_size(rem_size, |cx| {
4873 self.editor.update(cx, |editor, cx| {
4874 editor.set_style(self.style.clone(), cx);
4875
4876 let layout_id = match editor.mode {
4877 EditorMode::SingleLine { auto_width } => {
4878 let rem_size = cx.rem_size();
4879
4880 let height = self.style.text.line_height_in_pixels(rem_size);
4881 if auto_width {
4882 let editor_handle = cx.view().clone();
4883 let style = self.style.clone();
4884 cx.request_measured_layout(Style::default(), move |_, _, cx| {
4885 let editor_snapshot =
4886 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
4887 let line = Self::layout_lines(
4888 DisplayRow(0)..DisplayRow(1),
4889 &[],
4890 &editor_snapshot,
4891 &style,
4892 px(f32::MAX),
4893 cx,
4894 )
4895 .pop()
4896 .unwrap();
4897
4898 let font_id = cx.text_system().resolve_font(&style.text.font());
4899 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4900 let em_width = cx
4901 .text_system()
4902 .typographic_bounds(font_id, font_size, 'm')
4903 .unwrap()
4904 .size
4905 .width;
4906
4907 size(line.width + em_width, height)
4908 })
4909 } else {
4910 let mut style = Style::default();
4911 style.size.height = height.into();
4912 style.size.width = relative(1.).into();
4913 cx.request_layout(style, None)
4914 }
4915 }
4916 EditorMode::AutoHeight { max_lines } => {
4917 let editor_handle = cx.view().clone();
4918 let max_line_number_width =
4919 self.max_line_number_width(&editor.snapshot(cx), cx);
4920 cx.request_measured_layout(
4921 Style::default(),
4922 move |known_dimensions, available_space, cx| {
4923 editor_handle
4924 .update(cx, |editor, cx| {
4925 compute_auto_height_layout(
4926 editor,
4927 max_lines,
4928 max_line_number_width,
4929 known_dimensions,
4930 available_space.width,
4931 cx,
4932 )
4933 })
4934 .unwrap_or_default()
4935 },
4936 )
4937 }
4938 EditorMode::Full => {
4939 let mut style = Style::default();
4940 style.size.width = relative(1.).into();
4941 style.size.height = relative(1.).into();
4942 cx.request_layout(style, None)
4943 }
4944 };
4945
4946 (layout_id, ())
4947 })
4948 })
4949 }
4950
4951 fn prepaint(
4952 &mut self,
4953 _: Option<&GlobalElementId>,
4954 bounds: Bounds<Pixels>,
4955 _: &mut Self::RequestLayoutState,
4956 cx: &mut WindowContext,
4957 ) -> Self::PrepaintState {
4958 let text_style = TextStyleRefinement {
4959 font_size: Some(self.style.text.font_size),
4960 line_height: Some(self.style.text.line_height),
4961 ..Default::default()
4962 };
4963 let focus_handle = self.editor.focus_handle(cx);
4964 cx.set_view_id(self.editor.entity_id());
4965 cx.set_focus_handle(&focus_handle);
4966
4967 let rem_size = self.rem_size(cx);
4968 cx.with_rem_size(rem_size, |cx| {
4969 cx.with_text_style(Some(text_style), |cx| {
4970 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
4971 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
4972 let style = self.style.clone();
4973
4974 let font_id = cx.text_system().resolve_font(&style.text.font());
4975 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4976 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4977 let em_width = cx
4978 .text_system()
4979 .typographic_bounds(font_id, font_size, 'm')
4980 .unwrap()
4981 .size
4982 .width;
4983 let em_advance = cx
4984 .text_system()
4985 .advance(font_id, font_size, 'm')
4986 .unwrap()
4987 .width;
4988
4989 let gutter_dimensions = snapshot.gutter_dimensions(
4990 font_id,
4991 font_size,
4992 em_width,
4993 self.max_line_number_width(&snapshot, cx),
4994 cx,
4995 );
4996 let text_width = bounds.size.width - gutter_dimensions.width;
4997
4998 let right_margin = if snapshot.mode == EditorMode::Full {
4999 EditorElement::SCROLLBAR_WIDTH
5000 } else {
5001 px(0.)
5002 };
5003 let overscroll = size(em_width + right_margin, px(0.));
5004
5005 let editor_width =
5006 text_width - gutter_dimensions.margin - overscroll.width - em_width;
5007
5008 snapshot = self.editor.update(cx, |editor, cx| {
5009 editor.last_bounds = Some(bounds);
5010 editor.gutter_dimensions = gutter_dimensions;
5011 editor.set_visible_line_count(bounds.size.height / line_height, cx);
5012
5013 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
5014 snapshot
5015 } else {
5016 let wrap_width = match editor.soft_wrap_mode(cx) {
5017 SoftWrap::None => None,
5018 SoftWrap::PreferLine => {
5019 Some((MAX_LINE_LEN / 2) as f32 * em_advance)
5020 }
5021 SoftWrap::EditorWidth => Some(editor_width),
5022 SoftWrap::Column(column) => Some(column as f32 * em_advance),
5023 SoftWrap::Bounded(column) => {
5024 Some(editor_width.min(column as f32 * em_advance))
5025 }
5026 };
5027
5028 if editor.set_wrap_width(wrap_width, cx) {
5029 editor.snapshot(cx)
5030 } else {
5031 snapshot
5032 }
5033 }
5034 });
5035
5036 let wrap_guides = self
5037 .editor
5038 .read(cx)
5039 .wrap_guides(cx)
5040 .iter()
5041 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
5042 .collect::<SmallVec<[_; 2]>>();
5043
5044 let hitbox = cx.insert_hitbox(bounds, false);
5045 let gutter_hitbox =
5046 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
5047 let text_hitbox = cx.insert_hitbox(
5048 Bounds {
5049 origin: gutter_hitbox.upper_right(),
5050 size: size(text_width, bounds.size.height),
5051 },
5052 false,
5053 );
5054 // Offset the content_bounds from the text_bounds by the gutter margin (which
5055 // is roughly half a character wide) to make hit testing work more like how we want.
5056 let content_origin =
5057 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
5058
5059 let height_in_lines = bounds.size.height / line_height;
5060 let max_row = snapshot.max_point().row().as_f32();
5061 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
5062 (max_row - height_in_lines + 1.).max(0.)
5063 } else {
5064 let settings = EditorSettings::get_global(cx);
5065 match settings.scroll_beyond_last_line {
5066 ScrollBeyondLastLine::OnePage => max_row,
5067 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
5068 ScrollBeyondLastLine::VerticalScrollMargin => {
5069 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
5070 .max(0.)
5071 }
5072 }
5073 };
5074
5075 let mut autoscroll_request = None;
5076 let mut autoscroll_containing_element = false;
5077 let mut autoscroll_horizontally = false;
5078 self.editor.update(cx, |editor, cx| {
5079 autoscroll_request = editor.autoscroll_request();
5080 autoscroll_containing_element =
5081 autoscroll_request.is_some() || editor.has_pending_selection();
5082 autoscroll_horizontally =
5083 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
5084 snapshot = editor.snapshot(cx);
5085 });
5086
5087 let mut scroll_position = snapshot.scroll_position();
5088 // The scroll position is a fractional point, the whole number of which represents
5089 // the top of the window in terms of display rows.
5090 let start_row = DisplayRow(scroll_position.y as u32);
5091 let max_row = snapshot.max_point().row();
5092 let end_row = cmp::min(
5093 (scroll_position.y + height_in_lines).ceil() as u32,
5094 max_row.next_row().0,
5095 );
5096 let end_row = DisplayRow(end_row);
5097
5098 let buffer_rows = snapshot
5099 .buffer_rows(start_row)
5100 .take((start_row..end_row).len())
5101 .collect::<Vec<_>>();
5102
5103 let start_anchor = if start_row == Default::default() {
5104 Anchor::min()
5105 } else {
5106 snapshot.buffer_snapshot.anchor_before(
5107 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
5108 )
5109 };
5110 let end_anchor = if end_row > max_row {
5111 Anchor::max()
5112 } else {
5113 snapshot.buffer_snapshot.anchor_before(
5114 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
5115 )
5116 };
5117
5118 let highlighted_rows = self
5119 .editor
5120 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
5121 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
5122 start_anchor..end_anchor,
5123 &snapshot.display_snapshot,
5124 cx.theme().colors(),
5125 );
5126 let highlighted_gutter_ranges =
5127 self.editor.read(cx).gutter_highlights_in_range(
5128 start_anchor..end_anchor,
5129 &snapshot.display_snapshot,
5130 cx,
5131 );
5132
5133 let redacted_ranges = self.editor.read(cx).redacted_ranges(
5134 start_anchor..end_anchor,
5135 &snapshot.display_snapshot,
5136 cx,
5137 );
5138
5139 let (selections, active_rows, newest_selection_head) = self.layout_selections(
5140 start_anchor,
5141 end_anchor,
5142 &snapshot,
5143 start_row,
5144 end_row,
5145 cx,
5146 );
5147
5148 let line_numbers = self.layout_line_numbers(
5149 start_row..end_row,
5150 buffer_rows.iter().copied(),
5151 &active_rows,
5152 newest_selection_head,
5153 &snapshot,
5154 cx,
5155 );
5156
5157 let mut gutter_fold_toggles =
5158 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5159 self.layout_gutter_fold_toggles(
5160 start_row..end_row,
5161 buffer_rows.iter().copied(),
5162 &active_rows,
5163 &snapshot,
5164 cx,
5165 )
5166 });
5167 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5168 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
5169 });
5170
5171 let display_hunks = self.layout_gutter_git_hunks(
5172 line_height,
5173 &gutter_hitbox,
5174 start_row..end_row,
5175 &snapshot,
5176 cx,
5177 );
5178
5179 let mut max_visible_line_width = Pixels::ZERO;
5180 let mut line_layouts = Self::layout_lines(
5181 start_row..end_row,
5182 &line_numbers,
5183 &snapshot,
5184 &self.style,
5185 editor_width,
5186 cx,
5187 );
5188 for line_with_invisibles in &line_layouts {
5189 if line_with_invisibles.width > max_visible_line_width {
5190 max_visible_line_width = line_with_invisibles.width;
5191 }
5192 }
5193
5194 let longest_line_width =
5195 layout_line(snapshot.longest_row(), &snapshot, &style, editor_width, cx)
5196 .width;
5197 let mut scroll_width =
5198 longest_line_width.max(max_visible_line_width) + overscroll.width;
5199
5200 let blocks = cx.with_element_namespace("blocks", |cx| {
5201 self.render_blocks(
5202 start_row..end_row,
5203 &snapshot,
5204 &hitbox,
5205 &text_hitbox,
5206 editor_width,
5207 &mut scroll_width,
5208 &gutter_dimensions,
5209 em_width,
5210 gutter_dimensions.full_width(),
5211 line_height,
5212 &line_layouts,
5213 cx,
5214 )
5215 });
5216 let mut blocks = match blocks {
5217 Ok(blocks) => blocks,
5218 Err(resized_blocks) => {
5219 self.editor.update(cx, |editor, cx| {
5220 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
5221 });
5222 return self.prepaint(None, bounds, &mut (), cx);
5223 }
5224 };
5225
5226 let start_buffer_row =
5227 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
5228 let end_buffer_row =
5229 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
5230
5231 let scroll_max = point(
5232 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5233 max_row.as_f32(),
5234 );
5235
5236 self.editor.update(cx, |editor, cx| {
5237 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5238
5239 let autoscrolled = if autoscroll_horizontally {
5240 editor.autoscroll_horizontally(
5241 start_row,
5242 text_hitbox.size.width,
5243 scroll_width,
5244 em_width,
5245 &line_layouts,
5246 cx,
5247 )
5248 } else {
5249 false
5250 };
5251
5252 if clamped || autoscrolled {
5253 snapshot = editor.snapshot(cx);
5254 scroll_position = snapshot.scroll_position();
5255 }
5256 });
5257
5258 let scroll_pixel_position = point(
5259 scroll_position.x * em_width,
5260 scroll_position.y * line_height,
5261 );
5262
5263 let indent_guides = self.layout_indent_guides(
5264 content_origin,
5265 text_hitbox.origin,
5266 start_buffer_row..end_buffer_row,
5267 scroll_pixel_position,
5268 line_height,
5269 &snapshot,
5270 cx,
5271 );
5272
5273 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
5274 self.prepaint_crease_trailers(
5275 crease_trailers,
5276 &line_layouts,
5277 line_height,
5278 content_origin,
5279 scroll_pixel_position,
5280 em_width,
5281 cx,
5282 )
5283 });
5284
5285 let mut inline_blame = None;
5286 if let Some(newest_selection_head) = newest_selection_head {
5287 let display_row = newest_selection_head.row();
5288 if (start_row..end_row).contains(&display_row) {
5289 let line_ix = display_row.minus(start_row) as usize;
5290 let line_layout = &line_layouts[line_ix];
5291 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
5292 inline_blame = self.layout_inline_blame(
5293 display_row,
5294 &snapshot.display_snapshot,
5295 line_layout,
5296 crease_trailer_layout,
5297 em_width,
5298 content_origin,
5299 scroll_pixel_position,
5300 line_height,
5301 cx,
5302 );
5303 }
5304 }
5305
5306 let blamed_display_rows = self.layout_blame_entries(
5307 buffer_rows.into_iter(),
5308 em_width,
5309 scroll_position,
5310 line_height,
5311 &gutter_hitbox,
5312 gutter_dimensions.git_blame_entries_width,
5313 cx,
5314 );
5315
5316 let scroll_max = point(
5317 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
5318 max_scroll_top,
5319 );
5320
5321 self.editor.update(cx, |editor, cx| {
5322 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
5323
5324 let autoscrolled = if autoscroll_horizontally {
5325 editor.autoscroll_horizontally(
5326 start_row,
5327 text_hitbox.size.width,
5328 scroll_width,
5329 em_width,
5330 &line_layouts,
5331 cx,
5332 )
5333 } else {
5334 false
5335 };
5336
5337 if clamped || autoscrolled {
5338 snapshot = editor.snapshot(cx);
5339 scroll_position = snapshot.scroll_position();
5340 }
5341 });
5342
5343 let line_elements = self.prepaint_lines(
5344 start_row,
5345 &mut line_layouts,
5346 line_height,
5347 scroll_pixel_position,
5348 content_origin,
5349 cx,
5350 );
5351
5352 cx.with_element_namespace("blocks", |cx| {
5353 self.layout_blocks(
5354 &mut blocks,
5355 &hitbox,
5356 line_height,
5357 scroll_pixel_position,
5358 cx,
5359 );
5360 });
5361
5362 let cursors = self.collect_cursors(&snapshot, cx);
5363 let visible_row_range = start_row..end_row;
5364 let non_visible_cursors = cursors
5365 .iter()
5366 .any(move |c| !visible_row_range.contains(&c.0.row()));
5367
5368 let visible_cursors = self.layout_visible_cursors(
5369 &snapshot,
5370 &selections,
5371 start_row..end_row,
5372 &line_layouts,
5373 &text_hitbox,
5374 content_origin,
5375 scroll_position,
5376 scroll_pixel_position,
5377 line_height,
5378 em_width,
5379 autoscroll_containing_element,
5380 cx,
5381 );
5382
5383 let scrollbar_layout = self.layout_scrollbar(
5384 &snapshot,
5385 bounds,
5386 scroll_position,
5387 height_in_lines,
5388 non_visible_cursors,
5389 cx,
5390 );
5391
5392 let gutter_settings = EditorSettings::get_global(cx).gutter;
5393
5394 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
5395 editor
5396 .expanded_hunks
5397 .hunks(false)
5398 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
5399 .map(|expanded_hunk| {
5400 let start_row = expanded_hunk
5401 .hunk_range
5402 .start
5403 .to_display_point(&snapshot)
5404 .row();
5405 (start_row, expanded_hunk.clone())
5406 })
5407 .collect::<HashMap<_, _>>()
5408 });
5409
5410 let rows_with_hunk_bounds = display_hunks
5411 .iter()
5412 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
5413 .fold(
5414 HashMap::default(),
5415 |mut rows_with_hunk_bounds, (hunk, bounds)| {
5416 match hunk {
5417 DisplayDiffHunk::Folded { display_row } => {
5418 rows_with_hunk_bounds.insert(*display_row, bounds);
5419 }
5420 DisplayDiffHunk::Unfolded {
5421 display_row_range, ..
5422 } => {
5423 for display_row in display_row_range.iter_rows() {
5424 rows_with_hunk_bounds.insert(display_row, bounds);
5425 }
5426 }
5427 }
5428 rows_with_hunk_bounds
5429 },
5430 );
5431 let mut _context_menu_visible = false;
5432 let mut code_actions_indicator = None;
5433 if let Some(newest_selection_head) = newest_selection_head {
5434 if (start_row..end_row).contains(&newest_selection_head.row()) {
5435 _context_menu_visible = self.layout_context_menu(
5436 line_height,
5437 &hitbox,
5438 &text_hitbox,
5439 content_origin,
5440 start_row,
5441 scroll_pixel_position,
5442 &line_layouts,
5443 newest_selection_head,
5444 gutter_dimensions.width - gutter_dimensions.left_padding,
5445 cx,
5446 );
5447
5448 let show_code_actions = snapshot
5449 .show_code_actions
5450 .unwrap_or_else(|| gutter_settings.code_actions);
5451 if show_code_actions {
5452 let newest_selection_point =
5453 newest_selection_head.to_point(&snapshot.display_snapshot);
5454 let newest_selection_display_row =
5455 newest_selection_point.to_display_point(&snapshot).row();
5456 if !expanded_add_hunks_by_rows
5457 .contains_key(&newest_selection_display_row)
5458 {
5459 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
5460 MultiBufferRow(newest_selection_point.row),
5461 );
5462 if let Some((buffer, range)) = buffer {
5463 let buffer_id = buffer.remote_id();
5464 let row = range.start.row;
5465 let has_test_indicator = self
5466 .editor
5467 .read(cx)
5468 .tasks
5469 .contains_key(&(buffer_id, row));
5470
5471 if !has_test_indicator {
5472 code_actions_indicator = self
5473 .layout_code_actions_indicator(
5474 line_height,
5475 newest_selection_head,
5476 scroll_pixel_position,
5477 &gutter_dimensions,
5478 &gutter_hitbox,
5479 &rows_with_hunk_bounds,
5480 cx,
5481 );
5482 }
5483 }
5484 }
5485 }
5486 }
5487 }
5488
5489 let test_indicators = if gutter_settings.runnables {
5490 self.layout_run_indicators(
5491 line_height,
5492 scroll_pixel_position,
5493 &gutter_dimensions,
5494 &gutter_hitbox,
5495 &rows_with_hunk_bounds,
5496 &snapshot,
5497 cx,
5498 )
5499 } else {
5500 Vec::new()
5501 };
5502
5503 let close_indicators = self.layout_hunk_diff_close_indicators(
5504 line_height,
5505 scroll_pixel_position,
5506 &gutter_dimensions,
5507 &gutter_hitbox,
5508 &rows_with_hunk_bounds,
5509 expanded_add_hunks_by_rows,
5510 cx,
5511 );
5512
5513 self.layout_signature_help(
5514 &hitbox,
5515 content_origin,
5516 scroll_pixel_position,
5517 newest_selection_head,
5518 start_row,
5519 &line_layouts,
5520 line_height,
5521 em_width,
5522 cx,
5523 );
5524
5525 if !cx.has_active_drag() {
5526 self.layout_hover_popovers(
5527 &snapshot,
5528 &hitbox,
5529 &text_hitbox,
5530 start_row..end_row,
5531 content_origin,
5532 scroll_pixel_position,
5533 &line_layouts,
5534 line_height,
5535 em_width,
5536 cx,
5537 );
5538 }
5539
5540 let mouse_context_menu =
5541 self.layout_mouse_context_menu(&snapshot, start_row..end_row, cx);
5542
5543 cx.with_element_namespace("gutter_fold_toggles", |cx| {
5544 self.prepaint_gutter_fold_toggles(
5545 &mut gutter_fold_toggles,
5546 line_height,
5547 &gutter_dimensions,
5548 gutter_settings,
5549 scroll_pixel_position,
5550 &gutter_hitbox,
5551 cx,
5552 )
5553 });
5554
5555 let invisible_symbol_font_size = font_size / 2.;
5556 let tab_invisible = cx
5557 .text_system()
5558 .shape_line(
5559 "→".into(),
5560 invisible_symbol_font_size,
5561 &[TextRun {
5562 len: "→".len(),
5563 font: self.style.text.font(),
5564 color: cx.theme().colors().editor_invisible,
5565 background_color: None,
5566 underline: None,
5567 strikethrough: None,
5568 }],
5569 )
5570 .unwrap();
5571 let space_invisible = cx
5572 .text_system()
5573 .shape_line(
5574 "•".into(),
5575 invisible_symbol_font_size,
5576 &[TextRun {
5577 len: "•".len(),
5578 font: self.style.text.font(),
5579 color: cx.theme().colors().editor_invisible,
5580 background_color: None,
5581 underline: None,
5582 strikethrough: None,
5583 }],
5584 )
5585 .unwrap();
5586
5587 EditorLayout {
5588 mode: snapshot.mode,
5589 position_map: Rc::new(PositionMap {
5590 size: bounds.size,
5591 scroll_pixel_position,
5592 scroll_max,
5593 line_layouts,
5594 line_height,
5595 em_width,
5596 em_advance,
5597 snapshot,
5598 }),
5599 visible_display_row_range: start_row..end_row,
5600 wrap_guides,
5601 indent_guides,
5602 hitbox,
5603 text_hitbox,
5604 gutter_hitbox,
5605 gutter_dimensions,
5606 display_hunks,
5607 content_origin,
5608 scrollbar_layout,
5609 active_rows,
5610 highlighted_rows,
5611 highlighted_ranges,
5612 highlighted_gutter_ranges,
5613 redacted_ranges,
5614 line_elements,
5615 line_numbers,
5616 blamed_display_rows,
5617 inline_blame,
5618 blocks,
5619 cursors,
5620 visible_cursors,
5621 selections,
5622 mouse_context_menu,
5623 test_indicators,
5624 close_indicators,
5625 code_actions_indicator,
5626 gutter_fold_toggles,
5627 crease_trailers,
5628 tab_invisible,
5629 space_invisible,
5630 }
5631 })
5632 })
5633 })
5634 }
5635
5636 fn paint(
5637 &mut self,
5638 _: Option<&GlobalElementId>,
5639 bounds: Bounds<gpui::Pixels>,
5640 _: &mut Self::RequestLayoutState,
5641 layout: &mut Self::PrepaintState,
5642 cx: &mut WindowContext,
5643 ) {
5644 let focus_handle = self.editor.focus_handle(cx);
5645 let key_context = self.editor.update(cx, |editor, cx| editor.key_context(cx));
5646 cx.set_key_context(key_context);
5647 cx.handle_input(
5648 &focus_handle,
5649 ElementInputHandler::new(bounds, self.editor.clone()),
5650 );
5651 self.register_actions(cx);
5652 self.register_key_listeners(cx, layout);
5653
5654 let text_style = TextStyleRefinement {
5655 font_size: Some(self.style.text.font_size),
5656 line_height: Some(self.style.text.line_height),
5657 ..Default::default()
5658 };
5659 let mouse_position = cx.mouse_position();
5660 let hovered_hunk = layout
5661 .display_hunks
5662 .iter()
5663 .find_map(|(hunk, hunk_hitbox)| match hunk {
5664 DisplayDiffHunk::Folded { .. } => None,
5665 DisplayDiffHunk::Unfolded {
5666 diff_base_byte_range,
5667 multi_buffer_range,
5668 status,
5669 ..
5670 } => {
5671 if hunk_hitbox
5672 .as_ref()
5673 .map(|hitbox| hitbox.contains(&mouse_position))
5674 .unwrap_or(false)
5675 {
5676 Some(HoveredHunk {
5677 status: *status,
5678 multi_buffer_range: multi_buffer_range.clone(),
5679 diff_base_byte_range: diff_base_byte_range.clone(),
5680 })
5681 } else {
5682 None
5683 }
5684 }
5685 });
5686 let rem_size = self.rem_size(cx);
5687 cx.with_rem_size(rem_size, |cx| {
5688 cx.with_text_style(Some(text_style), |cx| {
5689 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
5690 self.paint_mouse_listeners(layout, hovered_hunk, cx);
5691 self.paint_background(layout, cx);
5692 self.paint_indent_guides(layout, cx);
5693
5694 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5695 self.paint_blamed_display_rows(layout, cx);
5696 self.paint_line_numbers(layout, cx);
5697 }
5698
5699 self.paint_text(layout, cx);
5700
5701 if layout.gutter_hitbox.size.width > Pixels::ZERO {
5702 self.paint_gutter_highlights(layout, cx);
5703 self.paint_gutter_indicators(layout, cx);
5704 }
5705
5706 if !layout.blocks.is_empty() {
5707 cx.with_element_namespace("blocks", |cx| {
5708 self.paint_blocks(layout, cx);
5709 });
5710 }
5711
5712 self.paint_scrollbar(layout, cx);
5713 self.paint_mouse_context_menu(layout, cx);
5714 });
5715 })
5716 })
5717 }
5718}
5719
5720pub(super) fn gutter_bounds(
5721 editor_bounds: Bounds<Pixels>,
5722 gutter_dimensions: GutterDimensions,
5723) -> Bounds<Pixels> {
5724 Bounds {
5725 origin: editor_bounds.origin,
5726 size: size(gutter_dimensions.width, editor_bounds.size.height),
5727 }
5728}
5729
5730impl IntoElement for EditorElement {
5731 type Element = Self;
5732
5733 fn into_element(self) -> Self::Element {
5734 self
5735 }
5736}
5737
5738pub struct EditorLayout {
5739 position_map: Rc<PositionMap>,
5740 hitbox: Hitbox,
5741 text_hitbox: Hitbox,
5742 gutter_hitbox: Hitbox,
5743 gutter_dimensions: GutterDimensions,
5744 content_origin: gpui::Point<Pixels>,
5745 scrollbar_layout: Option<ScrollbarLayout>,
5746 mode: EditorMode,
5747 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
5748 indent_guides: Option<Vec<IndentGuideLayout>>,
5749 visible_display_row_range: Range<DisplayRow>,
5750 active_rows: BTreeMap<DisplayRow, bool>,
5751 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
5752 line_elements: SmallVec<[AnyElement; 1]>,
5753 line_numbers: Vec<Option<ShapedLine>>,
5754 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
5755 blamed_display_rows: Option<Vec<AnyElement>>,
5756 inline_blame: Option<AnyElement>,
5757 blocks: Vec<BlockLayout>,
5758 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5759 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
5760 redacted_ranges: Vec<Range<DisplayPoint>>,
5761 cursors: Vec<(DisplayPoint, Hsla)>,
5762 visible_cursors: Vec<CursorLayout>,
5763 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
5764 code_actions_indicator: Option<AnyElement>,
5765 test_indicators: Vec<AnyElement>,
5766 close_indicators: Vec<AnyElement>,
5767 gutter_fold_toggles: Vec<Option<AnyElement>>,
5768 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
5769 mouse_context_menu: Option<AnyElement>,
5770 tab_invisible: ShapedLine,
5771 space_invisible: ShapedLine,
5772}
5773
5774impl EditorLayout {
5775 fn line_end_overshoot(&self) -> Pixels {
5776 0.15 * self.position_map.line_height
5777 }
5778}
5779
5780struct ColoredRange<T> {
5781 start: T,
5782 end: T,
5783 color: Hsla,
5784}
5785
5786#[derive(Clone)]
5787struct ScrollbarLayout {
5788 hitbox: Hitbox,
5789 visible_row_range: Range<f32>,
5790 visible: bool,
5791 row_height: Pixels,
5792 thumb_height: Pixels,
5793}
5794
5795impl ScrollbarLayout {
5796 const BORDER_WIDTH: Pixels = px(1.0);
5797 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
5798 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
5799 const MIN_THUMB_HEIGHT: Pixels = px(20.0);
5800
5801 fn thumb_bounds(&self) -> Bounds<Pixels> {
5802 let thumb_top = self.y_for_row(self.visible_row_range.start);
5803 let thumb_bottom = thumb_top + self.thumb_height;
5804 Bounds::from_corners(
5805 point(self.hitbox.left(), thumb_top),
5806 point(self.hitbox.right(), thumb_bottom),
5807 )
5808 }
5809
5810 fn y_for_row(&self, row: f32) -> Pixels {
5811 self.hitbox.top() + row * self.row_height
5812 }
5813
5814 fn marker_quads_for_ranges(
5815 &self,
5816 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
5817 column: Option<usize>,
5818 ) -> Vec<PaintQuad> {
5819 struct MinMax {
5820 min: Pixels,
5821 max: Pixels,
5822 }
5823 let (x_range, height_limit) = if let Some(column) = column {
5824 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
5825 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
5826 let end = start + column_width;
5827 (
5828 Range { start, end },
5829 MinMax {
5830 min: Self::MIN_MARKER_HEIGHT,
5831 max: px(f32::MAX),
5832 },
5833 )
5834 } else {
5835 (
5836 Range {
5837 start: Self::BORDER_WIDTH,
5838 end: self.hitbox.size.width,
5839 },
5840 MinMax {
5841 min: Self::LINE_MARKER_HEIGHT,
5842 max: Self::LINE_MARKER_HEIGHT,
5843 },
5844 )
5845 };
5846
5847 let row_to_y = |row: DisplayRow| row.as_f32() * self.row_height;
5848 let mut pixel_ranges = row_ranges
5849 .into_iter()
5850 .map(|range| {
5851 let start_y = row_to_y(range.start);
5852 let end_y = row_to_y(range.end)
5853 + self.row_height.max(height_limit.min).min(height_limit.max);
5854 ColoredRange {
5855 start: start_y,
5856 end: end_y,
5857 color: range.color,
5858 }
5859 })
5860 .peekable();
5861
5862 let mut quads = Vec::new();
5863 while let Some(mut pixel_range) = pixel_ranges.next() {
5864 while let Some(next_pixel_range) = pixel_ranges.peek() {
5865 if pixel_range.end >= next_pixel_range.start - px(1.0)
5866 && pixel_range.color == next_pixel_range.color
5867 {
5868 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
5869 pixel_ranges.next();
5870 } else {
5871 break;
5872 }
5873 }
5874
5875 let bounds = Bounds::from_corners(
5876 point(x_range.start, pixel_range.start),
5877 point(x_range.end, pixel_range.end),
5878 );
5879 quads.push(quad(
5880 bounds,
5881 Corners::default(),
5882 pixel_range.color,
5883 Edges::default(),
5884 Hsla::transparent_black(),
5885 ));
5886 }
5887
5888 quads
5889 }
5890}
5891
5892struct CreaseTrailerLayout {
5893 element: AnyElement,
5894 bounds: Bounds<Pixels>,
5895}
5896
5897struct PositionMap {
5898 size: Size<Pixels>,
5899 line_height: Pixels,
5900 scroll_pixel_position: gpui::Point<Pixels>,
5901 scroll_max: gpui::Point<f32>,
5902 em_width: Pixels,
5903 em_advance: Pixels,
5904 line_layouts: Vec<LineWithInvisibles>,
5905 snapshot: EditorSnapshot,
5906}
5907
5908#[derive(Debug, Copy, Clone)]
5909pub struct PointForPosition {
5910 pub previous_valid: DisplayPoint,
5911 pub next_valid: DisplayPoint,
5912 pub exact_unclipped: DisplayPoint,
5913 pub column_overshoot_after_line_end: u32,
5914}
5915
5916impl PointForPosition {
5917 pub fn as_valid(&self) -> Option<DisplayPoint> {
5918 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
5919 Some(self.previous_valid)
5920 } else {
5921 None
5922 }
5923 }
5924}
5925
5926impl PositionMap {
5927 fn point_for_position(
5928 &self,
5929 text_bounds: Bounds<Pixels>,
5930 position: gpui::Point<Pixels>,
5931 ) -> PointForPosition {
5932 let scroll_position = self.snapshot.scroll_position();
5933 let position = position - text_bounds.origin;
5934 let y = position.y.max(px(0.)).min(self.size.height);
5935 let x = position.x + (scroll_position.x * self.em_width);
5936 let row = ((y / self.line_height) + scroll_position.y) as u32;
5937
5938 let (column, x_overshoot_after_line_end) = if let Some(line) = self
5939 .line_layouts
5940 .get(row as usize - scroll_position.y as usize)
5941 {
5942 if let Some(ix) = line.index_for_x(x) {
5943 (ix as u32, px(0.))
5944 } else {
5945 (line.len as u32, px(0.).max(x - line.width))
5946 }
5947 } else {
5948 (0, x)
5949 };
5950
5951 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
5952 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
5953 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
5954
5955 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
5956 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
5957 PointForPosition {
5958 previous_valid,
5959 next_valid,
5960 exact_unclipped,
5961 column_overshoot_after_line_end,
5962 }
5963 }
5964}
5965
5966struct BlockLayout {
5967 id: BlockId,
5968 row: Option<DisplayRow>,
5969 element: AnyElement,
5970 available_space: Size<AvailableSpace>,
5971 style: BlockStyle,
5972}
5973
5974fn layout_line(
5975 row: DisplayRow,
5976 snapshot: &EditorSnapshot,
5977 style: &EditorStyle,
5978 text_width: Pixels,
5979 cx: &mut WindowContext,
5980) -> LineWithInvisibles {
5981 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
5982 LineWithInvisibles::from_chunks(
5983 chunks,
5984 &style.text,
5985 MAX_LINE_LEN,
5986 1,
5987 &[],
5988 snapshot.mode,
5989 text_width,
5990 cx,
5991 )
5992 .pop()
5993 .unwrap()
5994}
5995
5996#[derive(Debug)]
5997pub struct IndentGuideLayout {
5998 origin: gpui::Point<Pixels>,
5999 length: Pixels,
6000 single_indent_width: Pixels,
6001 depth: u32,
6002 active: bool,
6003 settings: IndentGuideSettings,
6004}
6005
6006pub struct CursorLayout {
6007 origin: gpui::Point<Pixels>,
6008 block_width: Pixels,
6009 line_height: Pixels,
6010 color: Hsla,
6011 shape: CursorShape,
6012 block_text: Option<ShapedLine>,
6013 cursor_name: Option<AnyElement>,
6014}
6015
6016#[derive(Debug)]
6017pub struct CursorName {
6018 string: SharedString,
6019 color: Hsla,
6020 is_top_row: bool,
6021}
6022
6023impl CursorLayout {
6024 pub fn new(
6025 origin: gpui::Point<Pixels>,
6026 block_width: Pixels,
6027 line_height: Pixels,
6028 color: Hsla,
6029 shape: CursorShape,
6030 block_text: Option<ShapedLine>,
6031 ) -> CursorLayout {
6032 CursorLayout {
6033 origin,
6034 block_width,
6035 line_height,
6036 color,
6037 shape,
6038 block_text,
6039 cursor_name: None,
6040 }
6041 }
6042
6043 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6044 Bounds {
6045 origin: self.origin + origin,
6046 size: size(self.block_width, self.line_height),
6047 }
6048 }
6049
6050 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6051 match self.shape {
6052 CursorShape::Bar => Bounds {
6053 origin: self.origin + origin,
6054 size: size(px(2.0), self.line_height),
6055 },
6056 CursorShape::Block | CursorShape::Hollow => Bounds {
6057 origin: self.origin + origin,
6058 size: size(self.block_width, self.line_height),
6059 },
6060 CursorShape::Underscore => Bounds {
6061 origin: self.origin
6062 + origin
6063 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
6064 size: size(self.block_width, px(2.0)),
6065 },
6066 }
6067 }
6068
6069 pub fn layout(
6070 &mut self,
6071 origin: gpui::Point<Pixels>,
6072 cursor_name: Option<CursorName>,
6073 cx: &mut WindowContext,
6074 ) {
6075 if let Some(cursor_name) = cursor_name {
6076 let bounds = self.bounds(origin);
6077 let text_size = self.line_height / 1.5;
6078
6079 let name_origin = if cursor_name.is_top_row {
6080 point(bounds.right() - px(1.), bounds.top())
6081 } else {
6082 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
6083 };
6084 let mut name_element = div()
6085 .bg(self.color)
6086 .text_size(text_size)
6087 .px_0p5()
6088 .line_height(text_size + px(2.))
6089 .text_color(cursor_name.color)
6090 .child(cursor_name.string.clone())
6091 .into_any_element();
6092
6093 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
6094
6095 self.cursor_name = Some(name_element);
6096 }
6097 }
6098
6099 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
6100 let bounds = self.bounds(origin);
6101
6102 //Draw background or border quad
6103 let cursor = if matches!(self.shape, CursorShape::Hollow) {
6104 outline(bounds, self.color)
6105 } else {
6106 fill(bounds, self.color)
6107 };
6108
6109 if let Some(name) = &mut self.cursor_name {
6110 name.paint(cx);
6111 }
6112
6113 cx.paint_quad(cursor);
6114
6115 if let Some(block_text) = &self.block_text {
6116 block_text
6117 .paint(self.origin + origin, self.line_height, cx)
6118 .log_err();
6119 }
6120 }
6121
6122 pub fn shape(&self) -> CursorShape {
6123 self.shape
6124 }
6125}
6126
6127#[derive(Debug)]
6128pub struct HighlightedRange {
6129 pub start_y: Pixels,
6130 pub line_height: Pixels,
6131 pub lines: Vec<HighlightedRangeLine>,
6132 pub color: Hsla,
6133 pub corner_radius: Pixels,
6134}
6135
6136#[derive(Debug)]
6137pub struct HighlightedRangeLine {
6138 pub start_x: Pixels,
6139 pub end_x: Pixels,
6140}
6141
6142impl HighlightedRange {
6143 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
6144 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
6145 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
6146 self.paint_lines(
6147 self.start_y + self.line_height,
6148 &self.lines[1..],
6149 bounds,
6150 cx,
6151 );
6152 } else {
6153 self.paint_lines(self.start_y, &self.lines, bounds, cx);
6154 }
6155 }
6156
6157 fn paint_lines(
6158 &self,
6159 start_y: Pixels,
6160 lines: &[HighlightedRangeLine],
6161 _bounds: Bounds<Pixels>,
6162 cx: &mut WindowContext,
6163 ) {
6164 if lines.is_empty() {
6165 return;
6166 }
6167
6168 let first_line = lines.first().unwrap();
6169 let last_line = lines.last().unwrap();
6170
6171 let first_top_left = point(first_line.start_x, start_y);
6172 let first_top_right = point(first_line.end_x, start_y);
6173
6174 let curve_height = point(Pixels::ZERO, self.corner_radius);
6175 let curve_width = |start_x: Pixels, end_x: Pixels| {
6176 let max = (end_x - start_x) / 2.;
6177 let width = if max < self.corner_radius {
6178 max
6179 } else {
6180 self.corner_radius
6181 };
6182
6183 point(width, Pixels::ZERO)
6184 };
6185
6186 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
6187 let mut path = gpui::Path::new(first_top_right - top_curve_width);
6188 path.curve_to(first_top_right + curve_height, first_top_right);
6189
6190 let mut iter = lines.iter().enumerate().peekable();
6191 while let Some((ix, line)) = iter.next() {
6192 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
6193
6194 if let Some((_, next_line)) = iter.peek() {
6195 let next_top_right = point(next_line.end_x, bottom_right.y);
6196
6197 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
6198 Ordering::Equal => {
6199 path.line_to(bottom_right);
6200 }
6201 Ordering::Less => {
6202 let curve_width = curve_width(next_top_right.x, bottom_right.x);
6203 path.line_to(bottom_right - curve_height);
6204 if self.corner_radius > Pixels::ZERO {
6205 path.curve_to(bottom_right - curve_width, bottom_right);
6206 }
6207 path.line_to(next_top_right + curve_width);
6208 if self.corner_radius > Pixels::ZERO {
6209 path.curve_to(next_top_right + curve_height, next_top_right);
6210 }
6211 }
6212 Ordering::Greater => {
6213 let curve_width = curve_width(bottom_right.x, next_top_right.x);
6214 path.line_to(bottom_right - curve_height);
6215 if self.corner_radius > Pixels::ZERO {
6216 path.curve_to(bottom_right + curve_width, bottom_right);
6217 }
6218 path.line_to(next_top_right - curve_width);
6219 if self.corner_radius > Pixels::ZERO {
6220 path.curve_to(next_top_right + curve_height, next_top_right);
6221 }
6222 }
6223 }
6224 } else {
6225 let curve_width = curve_width(line.start_x, line.end_x);
6226 path.line_to(bottom_right - curve_height);
6227 if self.corner_radius > Pixels::ZERO {
6228 path.curve_to(bottom_right - curve_width, bottom_right);
6229 }
6230
6231 let bottom_left = point(line.start_x, bottom_right.y);
6232 path.line_to(bottom_left + curve_width);
6233 if self.corner_radius > Pixels::ZERO {
6234 path.curve_to(bottom_left - curve_height, bottom_left);
6235 }
6236 }
6237 }
6238
6239 if first_line.start_x > last_line.start_x {
6240 let curve_width = curve_width(last_line.start_x, first_line.start_x);
6241 let second_top_left = point(last_line.start_x, start_y + self.line_height);
6242 path.line_to(second_top_left + curve_height);
6243 if self.corner_radius > Pixels::ZERO {
6244 path.curve_to(second_top_left + curve_width, second_top_left);
6245 }
6246 let first_bottom_left = point(first_line.start_x, second_top_left.y);
6247 path.line_to(first_bottom_left - curve_width);
6248 if self.corner_radius > Pixels::ZERO {
6249 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
6250 }
6251 }
6252
6253 path.line_to(first_top_left + curve_height);
6254 if self.corner_radius > Pixels::ZERO {
6255 path.curve_to(first_top_left + top_curve_width, first_top_left);
6256 }
6257 path.line_to(first_top_right - top_curve_width);
6258
6259 cx.paint_path(path, self.color);
6260 }
6261}
6262
6263pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6264 (delta.pow(1.5) / 100.0).into()
6265}
6266
6267fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
6268 (delta.pow(1.2) / 300.0).into()
6269}
6270
6271#[cfg(test)]
6272mod tests {
6273 use super::*;
6274 use crate::{
6275 display_map::{BlockDisposition, BlockProperties},
6276 editor_tests::{init_test, update_test_language_settings},
6277 Editor, MultiBuffer,
6278 };
6279 use gpui::{TestAppContext, VisualTestContext};
6280 use language::language_settings;
6281 use log::info;
6282 use std::num::NonZeroU32;
6283 use ui::Context;
6284 use util::test::sample_text;
6285
6286 #[gpui::test]
6287 fn test_shape_line_numbers(cx: &mut TestAppContext) {
6288 init_test(cx, |_| {});
6289 let window = cx.add_window(|cx| {
6290 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6291 Editor::new(EditorMode::Full, buffer, None, true, cx)
6292 });
6293
6294 let editor = window.root(cx).unwrap();
6295 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6296 let element = EditorElement::new(&editor, style);
6297 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
6298
6299 let layouts = cx
6300 .update_window(*window, |_, cx| {
6301 element.layout_line_numbers(
6302 DisplayRow(0)..DisplayRow(6),
6303 (0..6).map(MultiBufferRow).map(Some),
6304 &Default::default(),
6305 Some(DisplayPoint::new(DisplayRow(0), 0)),
6306 &snapshot,
6307 cx,
6308 )
6309 })
6310 .unwrap();
6311 assert_eq!(layouts.len(), 6);
6312
6313 let relative_rows = window
6314 .update(cx, |editor, cx| {
6315 let snapshot = editor.snapshot(cx);
6316 element.calculate_relative_line_numbers(
6317 &snapshot,
6318 &(DisplayRow(0)..DisplayRow(6)),
6319 Some(DisplayRow(3)),
6320 )
6321 })
6322 .unwrap();
6323 assert_eq!(relative_rows[&DisplayRow(0)], 3);
6324 assert_eq!(relative_rows[&DisplayRow(1)], 2);
6325 assert_eq!(relative_rows[&DisplayRow(2)], 1);
6326 // current line has no relative number
6327 assert_eq!(relative_rows[&DisplayRow(4)], 1);
6328 assert_eq!(relative_rows[&DisplayRow(5)], 2);
6329
6330 // works if cursor is before screen
6331 let relative_rows = window
6332 .update(cx, |editor, cx| {
6333 let snapshot = editor.snapshot(cx);
6334 element.calculate_relative_line_numbers(
6335 &snapshot,
6336 &(DisplayRow(3)..DisplayRow(6)),
6337 Some(DisplayRow(1)),
6338 )
6339 })
6340 .unwrap();
6341 assert_eq!(relative_rows.len(), 3);
6342 assert_eq!(relative_rows[&DisplayRow(3)], 2);
6343 assert_eq!(relative_rows[&DisplayRow(4)], 3);
6344 assert_eq!(relative_rows[&DisplayRow(5)], 4);
6345
6346 // works if cursor is after screen
6347 let relative_rows = window
6348 .update(cx, |editor, cx| {
6349 let snapshot = editor.snapshot(cx);
6350 element.calculate_relative_line_numbers(
6351 &snapshot,
6352 &(DisplayRow(0)..DisplayRow(3)),
6353 Some(DisplayRow(6)),
6354 )
6355 })
6356 .unwrap();
6357 assert_eq!(relative_rows.len(), 3);
6358 assert_eq!(relative_rows[&DisplayRow(0)], 5);
6359 assert_eq!(relative_rows[&DisplayRow(1)], 4);
6360 assert_eq!(relative_rows[&DisplayRow(2)], 3);
6361 }
6362
6363 #[gpui::test]
6364 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
6365 init_test(cx, |_| {});
6366
6367 let window = cx.add_window(|cx| {
6368 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
6369 Editor::new(EditorMode::Full, buffer, None, true, cx)
6370 });
6371 let cx = &mut VisualTestContext::from_window(*window, cx);
6372 let editor = window.root(cx).unwrap();
6373 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6374
6375 window
6376 .update(cx, |editor, cx| {
6377 editor.cursor_shape = CursorShape::Block;
6378 editor.change_selections(None, cx, |s| {
6379 s.select_ranges([
6380 Point::new(0, 0)..Point::new(1, 0),
6381 Point::new(3, 2)..Point::new(3, 3),
6382 Point::new(5, 6)..Point::new(6, 0),
6383 ]);
6384 });
6385 })
6386 .unwrap();
6387
6388 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6389 EditorElement::new(&editor, style)
6390 });
6391
6392 assert_eq!(state.selections.len(), 1);
6393 let local_selections = &state.selections[0].1;
6394 assert_eq!(local_selections.len(), 3);
6395 // moves cursor back one line
6396 assert_eq!(
6397 local_selections[0].head,
6398 DisplayPoint::new(DisplayRow(0), 6)
6399 );
6400 assert_eq!(
6401 local_selections[0].range,
6402 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
6403 );
6404
6405 // moves cursor back one column
6406 assert_eq!(
6407 local_selections[1].range,
6408 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
6409 );
6410 assert_eq!(
6411 local_selections[1].head,
6412 DisplayPoint::new(DisplayRow(3), 2)
6413 );
6414
6415 // leaves cursor on the max point
6416 assert_eq!(
6417 local_selections[2].range,
6418 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
6419 );
6420 assert_eq!(
6421 local_selections[2].head,
6422 DisplayPoint::new(DisplayRow(6), 0)
6423 );
6424
6425 // active lines does not include 1 (even though the range of the selection does)
6426 assert_eq!(
6427 state.active_rows.keys().cloned().collect::<Vec<_>>(),
6428 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
6429 );
6430
6431 // multi-buffer support
6432 // in DisplayPoint coordinates, this is what we're dealing with:
6433 // 0: [[file
6434 // 1: header
6435 // 2: section]]
6436 // 3: aaaaaa
6437 // 4: bbbbbb
6438 // 5: cccccc
6439 // 6:
6440 // 7: [[footer]]
6441 // 8: [[header]]
6442 // 9: ffffff
6443 // 10: gggggg
6444 // 11: hhhhhh
6445 // 12:
6446 // 13: [[footer]]
6447 // 14: [[file
6448 // 15: header
6449 // 16: section]]
6450 // 17: bbbbbb
6451 // 18: cccccc
6452 // 19: dddddd
6453 // 20: [[footer]]
6454 let window = cx.add_window(|cx| {
6455 let buffer = MultiBuffer::build_multi(
6456 [
6457 (
6458 &(sample_text(8, 6, 'a') + "\n"),
6459 vec![
6460 Point::new(0, 0)..Point::new(3, 0),
6461 Point::new(4, 0)..Point::new(7, 0),
6462 ],
6463 ),
6464 (
6465 &(sample_text(8, 6, 'a') + "\n"),
6466 vec![Point::new(1, 0)..Point::new(3, 0)],
6467 ),
6468 ],
6469 cx,
6470 );
6471 Editor::new(EditorMode::Full, buffer, None, true, cx)
6472 });
6473 let editor = window.root(cx).unwrap();
6474 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6475 let _state = window.update(cx, |editor, cx| {
6476 editor.cursor_shape = CursorShape::Block;
6477 editor.change_selections(None, cx, |s| {
6478 s.select_display_ranges([
6479 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
6480 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
6481 ]);
6482 });
6483 });
6484
6485 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6486 EditorElement::new(&editor, style)
6487 });
6488 assert_eq!(state.selections.len(), 1);
6489 let local_selections = &state.selections[0].1;
6490 assert_eq!(local_selections.len(), 2);
6491
6492 // moves cursor on excerpt boundary back a line
6493 // and doesn't allow selection to bleed through
6494 assert_eq!(
6495 local_selections[0].range,
6496 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
6497 );
6498 assert_eq!(
6499 local_selections[0].head,
6500 DisplayPoint::new(DisplayRow(6), 0)
6501 );
6502 // moves cursor on buffer boundary back two lines
6503 // and doesn't allow selection to bleed through
6504 assert_eq!(
6505 local_selections[1].range,
6506 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
6507 );
6508 assert_eq!(
6509 local_selections[1].head,
6510 DisplayPoint::new(DisplayRow(12), 0)
6511 );
6512 }
6513
6514 #[gpui::test]
6515 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
6516 init_test(cx, |_| {});
6517
6518 let window = cx.add_window(|cx| {
6519 let buffer = MultiBuffer::build_simple("", cx);
6520 Editor::new(EditorMode::Full, buffer, None, true, cx)
6521 });
6522 let cx = &mut VisualTestContext::from_window(*window, cx);
6523 let editor = window.root(cx).unwrap();
6524 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6525 window
6526 .update(cx, |editor, cx| {
6527 editor.set_placeholder_text("hello", cx);
6528 editor.insert_blocks(
6529 [BlockProperties {
6530 style: BlockStyle::Fixed,
6531 disposition: BlockDisposition::Above,
6532 height: 3,
6533 position: Anchor::min(),
6534 render: Box::new(|cx| div().h(3. * cx.line_height()).into_any()),
6535 priority: 0,
6536 }],
6537 None,
6538 cx,
6539 );
6540
6541 // Blur the editor so that it displays placeholder text.
6542 cx.blur();
6543 })
6544 .unwrap();
6545
6546 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6547 EditorElement::new(&editor, style)
6548 });
6549 assert_eq!(state.position_map.line_layouts.len(), 4);
6550 assert_eq!(
6551 state
6552 .line_numbers
6553 .iter()
6554 .map(Option::is_some)
6555 .collect::<Vec<_>>(),
6556 &[false, false, false, true]
6557 );
6558 }
6559
6560 #[gpui::test]
6561 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
6562 const TAB_SIZE: u32 = 4;
6563
6564 let input_text = "\t \t|\t| a b";
6565 let expected_invisibles = vec![
6566 Invisible::Tab {
6567 line_start_offset: 0,
6568 line_end_offset: TAB_SIZE as usize,
6569 },
6570 Invisible::Whitespace {
6571 line_offset: TAB_SIZE as usize,
6572 },
6573 Invisible::Tab {
6574 line_start_offset: TAB_SIZE as usize + 1,
6575 line_end_offset: TAB_SIZE as usize * 2,
6576 },
6577 Invisible::Tab {
6578 line_start_offset: TAB_SIZE as usize * 2 + 1,
6579 line_end_offset: TAB_SIZE as usize * 3,
6580 },
6581 Invisible::Whitespace {
6582 line_offset: TAB_SIZE as usize * 3 + 1,
6583 },
6584 Invisible::Whitespace {
6585 line_offset: TAB_SIZE as usize * 3 + 3,
6586 },
6587 ];
6588 assert_eq!(
6589 expected_invisibles.len(),
6590 input_text
6591 .chars()
6592 .filter(|initial_char| initial_char.is_whitespace())
6593 .count(),
6594 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6595 );
6596
6597 init_test(cx, |s| {
6598 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6599 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
6600 });
6601
6602 let actual_invisibles =
6603 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
6604
6605 assert_eq!(expected_invisibles, actual_invisibles);
6606 }
6607
6608 #[gpui::test]
6609 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
6610 init_test(cx, |s| {
6611 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6612 s.defaults.tab_size = NonZeroU32::new(4);
6613 });
6614
6615 for editor_mode_without_invisibles in [
6616 EditorMode::SingleLine { auto_width: false },
6617 EditorMode::AutoHeight { max_lines: 100 },
6618 ] {
6619 let invisibles = collect_invisibles_from_new_editor(
6620 cx,
6621 editor_mode_without_invisibles,
6622 "\t\t\t| | a b",
6623 px(500.0),
6624 );
6625 assert!(invisibles.is_empty(),
6626 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
6627 }
6628 }
6629
6630 #[gpui::test]
6631 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
6632 let tab_size = 4;
6633 let input_text = "a\tbcd ".repeat(9);
6634 let repeated_invisibles = [
6635 Invisible::Tab {
6636 line_start_offset: 1,
6637 line_end_offset: tab_size as usize,
6638 },
6639 Invisible::Whitespace {
6640 line_offset: tab_size as usize + 3,
6641 },
6642 Invisible::Whitespace {
6643 line_offset: tab_size as usize + 4,
6644 },
6645 Invisible::Whitespace {
6646 line_offset: tab_size as usize + 5,
6647 },
6648 Invisible::Whitespace {
6649 line_offset: tab_size as usize + 6,
6650 },
6651 Invisible::Whitespace {
6652 line_offset: tab_size as usize + 7,
6653 },
6654 ];
6655 let expected_invisibles = std::iter::once(repeated_invisibles)
6656 .cycle()
6657 .take(9)
6658 .flatten()
6659 .collect::<Vec<_>>();
6660 assert_eq!(
6661 expected_invisibles.len(),
6662 input_text
6663 .chars()
6664 .filter(|initial_char| initial_char.is_whitespace())
6665 .count(),
6666 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
6667 );
6668 info!("Expected invisibles: {expected_invisibles:?}");
6669
6670 init_test(cx, |_| {});
6671
6672 // Put the same string with repeating whitespace pattern into editors of various size,
6673 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
6674 let resize_step = 10.0;
6675 let mut editor_width = 200.0;
6676 while editor_width <= 1000.0 {
6677 update_test_language_settings(cx, |s| {
6678 s.defaults.tab_size = NonZeroU32::new(tab_size);
6679 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
6680 s.defaults.preferred_line_length = Some(editor_width as u32);
6681 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
6682 });
6683
6684 let actual_invisibles = collect_invisibles_from_new_editor(
6685 cx,
6686 EditorMode::Full,
6687 &input_text,
6688 px(editor_width),
6689 );
6690
6691 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
6692 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
6693 let mut i = 0;
6694 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
6695 i = actual_index;
6696 match expected_invisibles.get(i) {
6697 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
6698 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
6699 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
6700 _ => {
6701 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
6702 }
6703 },
6704 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
6705 }
6706 }
6707 let missing_expected_invisibles = &expected_invisibles[i + 1..];
6708 assert!(
6709 missing_expected_invisibles.is_empty(),
6710 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
6711 );
6712
6713 editor_width += resize_step;
6714 }
6715 }
6716
6717 fn collect_invisibles_from_new_editor(
6718 cx: &mut TestAppContext,
6719 editor_mode: EditorMode,
6720 input_text: &str,
6721 editor_width: Pixels,
6722 ) -> Vec<Invisible> {
6723 info!(
6724 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
6725 editor_width.0
6726 );
6727 let window = cx.add_window(|cx| {
6728 let buffer = MultiBuffer::build_simple(&input_text, cx);
6729 Editor::new(editor_mode, buffer, None, true, cx)
6730 });
6731 let cx = &mut VisualTestContext::from_window(*window, cx);
6732 let editor = window.root(cx).unwrap();
6733 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
6734 window
6735 .update(cx, |editor, cx| {
6736 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
6737 editor.set_wrap_width(Some(editor_width), cx);
6738 })
6739 .unwrap();
6740 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
6741 EditorElement::new(&editor, style)
6742 });
6743 state
6744 .position_map
6745 .line_layouts
6746 .iter()
6747 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
6748 .cloned()
6749 .collect()
6750 }
6751}
6752
6753pub fn register_action<T: Action>(
6754 view: &View<Editor>,
6755 cx: &mut WindowContext,
6756 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
6757) {
6758 let view = view.clone();
6759 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
6760 let action = action.downcast_ref().unwrap();
6761 if phase == DispatchPhase::Bubble {
6762 view.update(cx, |editor, cx| {
6763 listener(editor, action, cx);
6764 })
6765 }
6766 })
6767}
6768
6769fn compute_auto_height_layout(
6770 editor: &mut Editor,
6771 max_lines: usize,
6772 max_line_number_width: Pixels,
6773 known_dimensions: Size<Option<Pixels>>,
6774 available_width: AvailableSpace,
6775 cx: &mut ViewContext<Editor>,
6776) -> Option<Size<Pixels>> {
6777 let width = known_dimensions.width.or_else(|| {
6778 if let AvailableSpace::Definite(available_width) = available_width {
6779 Some(available_width)
6780 } else {
6781 None
6782 }
6783 })?;
6784 if let Some(height) = known_dimensions.height {
6785 return Some(size(width, height));
6786 }
6787
6788 let style = editor.style.as_ref().unwrap();
6789 let font_id = cx.text_system().resolve_font(&style.text.font());
6790 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6791 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6792 let em_width = cx
6793 .text_system()
6794 .typographic_bounds(font_id, font_size, 'm')
6795 .unwrap()
6796 .size
6797 .width;
6798
6799 let mut snapshot = editor.snapshot(cx);
6800 let gutter_dimensions =
6801 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
6802
6803 editor.gutter_dimensions = gutter_dimensions;
6804 let text_width = width - gutter_dimensions.width;
6805 let overscroll = size(em_width, px(0.));
6806
6807 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
6808 if editor.set_wrap_width(Some(editor_width), cx) {
6809 snapshot = editor.snapshot(cx);
6810 }
6811
6812 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
6813 let height = scroll_height
6814 .max(line_height)
6815 .min(line_height * max_lines as f32);
6816
6817 Some(size(width, height))
6818}