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