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