1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::{DoubleClickInMultibuffer, MultiCursorModifier, ShowScrollbar},
7 git::{
8 blame::{CommitDetails, GitBlame},
9 diff_hunk_to_display, DisplayDiffHunk,
10 },
11 hover_popover::{
12 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
13 },
14 items::BufferSearchHighlights,
15 mouse_context_menu::{self, MouseContextMenu},
16 scroll::scroll_amount::ScrollAmount,
17 CursorShape, DisplayPoint, DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode,
18 EditorSettings, EditorSnapshot, EditorStyle, GutterDimensions, HalfPageDown, HalfPageUp,
19 HoveredCursor, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, SelectPhase, Selection,
20 SoftWrap, ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
21};
22use anyhow::Result;
23use collections::{BTreeMap, HashMap};
24use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
25use gpui::{
26 anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
27 transparent_black, Action, AnchorCorner, AnyElement, AvailableSpace, Bounds, ClipboardItem,
28 ContentMask, Corners, CursorStyle, DispatchPhase, Edges, Element, ElementContext,
29 ElementInputHandler, Entity, Hitbox, Hsla, InteractiveElement, IntoElement,
30 ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad,
31 ParentElement, Pixels, ScrollDelta, ScrollHandle, ScrollWheelEvent, ShapedLine, SharedString,
32 Size, Stateful, StatefulInteractiveElement, Style, Styled, TextRun, TextStyle,
33 TextStyleRefinement, View, ViewContext, WeakView, WindowContext,
34};
35use itertools::Itertools;
36use language::language_settings::ShowWhitespaceSetting;
37use lsp::DiagnosticSeverity;
38use multi_buffer::Anchor;
39use project::{
40 project_settings::{GitGutterSetting, ProjectSettings},
41 ProjectPath,
42};
43use settings::Settings;
44use smallvec::SmallVec;
45use std::{
46 any::TypeId,
47 borrow::Cow,
48 cmp::{self, max, Ordering},
49 fmt::Write,
50 iter, mem,
51 ops::Range,
52 sync::Arc,
53};
54use sum_tree::Bias;
55use theme::{ActiveTheme, PlayerColor, ThemeSettings};
56use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
57use ui::{prelude::*, tooltip_container};
58use util::ResultExt;
59use workspace::{item::Item, Workspace};
60
61struct SelectionLayout {
62 head: DisplayPoint,
63 cursor_shape: CursorShape,
64 is_newest: bool,
65 is_local: bool,
66 range: Range<DisplayPoint>,
67 active_rows: Range<u32>,
68 user_name: Option<SharedString>,
69}
70
71impl SelectionLayout {
72 fn new<T: ToPoint + ToDisplayPoint + Clone>(
73 selection: Selection<T>,
74 line_mode: bool,
75 cursor_shape: CursorShape,
76 map: &DisplaySnapshot,
77 is_newest: bool,
78 is_local: bool,
79 user_name: Option<SharedString>,
80 ) -> Self {
81 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
82 let display_selection = point_selection.map(|p| p.to_display_point(map));
83 let mut range = display_selection.range();
84 let mut head = display_selection.head();
85 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
86 ..map.next_line_boundary(point_selection.end).1.row();
87
88 // vim visual line mode
89 if line_mode {
90 let point_range = map.expand_to_line(point_selection.range());
91 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
92 }
93
94 // any vim visual mode (including line mode)
95 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
96 if head.column() > 0 {
97 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
98 } else if head.row() > 0 && head != map.max_point() {
99 head = map.clip_point(
100 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
101 Bias::Left,
102 );
103 // updating range.end is a no-op unless you're cursor is
104 // on the newline containing a multi-buffer divider
105 // in which case the clip_point may have moved the head up
106 // an additional row.
107 range.end = DisplayPoint::new(head.row() + 1, 0);
108 active_rows.end = head.row();
109 }
110 }
111
112 Self {
113 head,
114 cursor_shape,
115 is_newest,
116 is_local,
117 range,
118 active_rows,
119 user_name,
120 }
121 }
122}
123
124pub struct EditorElement {
125 editor: View<Editor>,
126 style: EditorStyle,
127}
128
129impl EditorElement {
130 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
131 Self {
132 editor: editor.clone(),
133 style,
134 }
135 }
136
137 fn register_actions(&self, cx: &mut WindowContext) {
138 let view = &self.editor;
139 view.update(cx, |editor, cx| {
140 for action in editor.editor_actions.iter() {
141 (action)(cx)
142 }
143 });
144
145 crate::rust_analyzer_ext::apply_related_actions(view, cx);
146 register_action(view, cx, Editor::move_left);
147 register_action(view, cx, Editor::move_right);
148 register_action(view, cx, Editor::move_down);
149 register_action(view, cx, Editor::move_down_by_lines);
150 register_action(view, cx, Editor::select_down_by_lines);
151 register_action(view, cx, Editor::move_up);
152 register_action(view, cx, Editor::move_up_by_lines);
153 register_action(view, cx, Editor::select_up_by_lines);
154 register_action(view, cx, Editor::cancel);
155 register_action(view, cx, Editor::newline);
156 register_action(view, cx, Editor::newline_above);
157 register_action(view, cx, Editor::newline_below);
158 register_action(view, cx, Editor::backspace);
159 register_action(view, cx, Editor::delete);
160 register_action(view, cx, Editor::tab);
161 register_action(view, cx, Editor::tab_prev);
162 register_action(view, cx, Editor::indent);
163 register_action(view, cx, Editor::outdent);
164 register_action(view, cx, Editor::delete_line);
165 register_action(view, cx, Editor::join_lines);
166 register_action(view, cx, Editor::sort_lines_case_sensitive);
167 register_action(view, cx, Editor::sort_lines_case_insensitive);
168 register_action(view, cx, Editor::reverse_lines);
169 register_action(view, cx, Editor::shuffle_lines);
170 register_action(view, cx, Editor::convert_to_upper_case);
171 register_action(view, cx, Editor::convert_to_lower_case);
172 register_action(view, cx, Editor::convert_to_title_case);
173 register_action(view, cx, Editor::convert_to_snake_case);
174 register_action(view, cx, Editor::convert_to_kebab_case);
175 register_action(view, cx, Editor::convert_to_upper_camel_case);
176 register_action(view, cx, Editor::convert_to_lower_camel_case);
177 register_action(view, cx, Editor::delete_to_previous_word_start);
178 register_action(view, cx, Editor::delete_to_previous_subword_start);
179 register_action(view, cx, Editor::delete_to_next_word_end);
180 register_action(view, cx, Editor::delete_to_next_subword_end);
181 register_action(view, cx, Editor::delete_to_beginning_of_line);
182 register_action(view, cx, Editor::delete_to_end_of_line);
183 register_action(view, cx, Editor::cut_to_end_of_line);
184 register_action(view, cx, Editor::duplicate_line_up);
185 register_action(view, cx, Editor::duplicate_line_down);
186 register_action(view, cx, Editor::move_line_up);
187 register_action(view, cx, Editor::move_line_down);
188 register_action(view, cx, Editor::transpose);
189 register_action(view, cx, Editor::cut);
190 register_action(view, cx, Editor::copy);
191 register_action(view, cx, Editor::paste);
192 register_action(view, cx, Editor::undo);
193 register_action(view, cx, Editor::redo);
194 register_action(view, cx, Editor::move_page_up);
195 register_action(view, cx, Editor::move_page_down);
196 register_action(view, cx, Editor::next_screen);
197 register_action(view, cx, Editor::scroll_cursor_top);
198 register_action(view, cx, Editor::scroll_cursor_center);
199 register_action(view, cx, Editor::scroll_cursor_bottom);
200 register_action(view, cx, |editor, _: &LineDown, cx| {
201 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
202 });
203 register_action(view, cx, |editor, _: &LineUp, cx| {
204 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
205 });
206 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
207 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
208 });
209 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
210 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
211 });
212 register_action(view, cx, |editor, _: &PageDown, cx| {
213 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
214 });
215 register_action(view, cx, |editor, _: &PageUp, cx| {
216 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
217 });
218 register_action(view, cx, Editor::move_to_previous_word_start);
219 register_action(view, cx, Editor::move_to_previous_subword_start);
220 register_action(view, cx, Editor::move_to_next_word_end);
221 register_action(view, cx, Editor::move_to_next_subword_end);
222 register_action(view, cx, Editor::move_to_beginning_of_line);
223 register_action(view, cx, Editor::move_to_end_of_line);
224 register_action(view, cx, Editor::move_to_start_of_paragraph);
225 register_action(view, cx, Editor::move_to_end_of_paragraph);
226 register_action(view, cx, Editor::move_to_beginning);
227 register_action(view, cx, Editor::move_to_end);
228 register_action(view, cx, Editor::select_up);
229 register_action(view, cx, Editor::select_down);
230 register_action(view, cx, Editor::select_left);
231 register_action(view, cx, Editor::select_right);
232 register_action(view, cx, Editor::select_to_previous_word_start);
233 register_action(view, cx, Editor::select_to_previous_subword_start);
234 register_action(view, cx, Editor::select_to_next_word_end);
235 register_action(view, cx, Editor::select_to_next_subword_end);
236 register_action(view, cx, Editor::select_to_beginning_of_line);
237 register_action(view, cx, Editor::select_to_end_of_line);
238 register_action(view, cx, Editor::select_to_start_of_paragraph);
239 register_action(view, cx, Editor::select_to_end_of_paragraph);
240 register_action(view, cx, Editor::select_to_beginning);
241 register_action(view, cx, Editor::select_to_end);
242 register_action(view, cx, Editor::select_all);
243 register_action(view, cx, |editor, action, cx| {
244 editor.select_all_matches(action, cx).log_err();
245 });
246 register_action(view, cx, Editor::select_line);
247 register_action(view, cx, Editor::split_selection_into_lines);
248 register_action(view, cx, Editor::add_selection_above);
249 register_action(view, cx, Editor::add_selection_below);
250 register_action(view, cx, |editor, action, cx| {
251 editor.select_next(action, cx).log_err();
252 });
253 register_action(view, cx, |editor, action, cx| {
254 editor.select_previous(action, cx).log_err();
255 });
256 register_action(view, cx, Editor::toggle_comments);
257 register_action(view, cx, Editor::select_larger_syntax_node);
258 register_action(view, cx, Editor::select_smaller_syntax_node);
259 register_action(view, cx, Editor::move_to_enclosing_bracket);
260 register_action(view, cx, Editor::undo_selection);
261 register_action(view, cx, Editor::redo_selection);
262 register_action(view, cx, Editor::go_to_diagnostic);
263 register_action(view, cx, Editor::go_to_prev_diagnostic);
264 register_action(view, cx, Editor::go_to_hunk);
265 register_action(view, cx, Editor::go_to_prev_hunk);
266 register_action(view, cx, |editor, a, cx| {
267 editor.go_to_definition(a, cx).detach_and_log_err(cx);
268 });
269 register_action(view, cx, |editor, a, cx| {
270 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
271 });
272 register_action(view, cx, |editor, a, cx| {
273 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
274 });
275 register_action(view, cx, |editor, a, cx| {
276 editor
277 .go_to_implementation_split(a, cx)
278 .detach_and_log_err(cx);
279 });
280 register_action(view, cx, |editor, a, cx| {
281 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
282 });
283 register_action(view, cx, |editor, a, cx| {
284 editor
285 .go_to_type_definition_split(a, cx)
286 .detach_and_log_err(cx);
287 });
288 register_action(view, cx, Editor::open_url);
289 register_action(view, cx, Editor::fold);
290 register_action(view, cx, Editor::fold_at);
291 register_action(view, cx, Editor::unfold_lines);
292 register_action(view, cx, Editor::unfold_at);
293 register_action(view, cx, Editor::fold_selected_ranges);
294 register_action(view, cx, Editor::show_completions);
295 register_action(view, cx, Editor::toggle_code_actions);
296 register_action(view, cx, Editor::open_excerpts);
297 register_action(view, cx, Editor::open_excerpts_in_split);
298 register_action(view, cx, Editor::toggle_soft_wrap);
299 register_action(view, cx, Editor::toggle_line_numbers);
300 register_action(view, cx, Editor::toggle_inlay_hints);
301 register_action(view, cx, hover_popover::hover);
302 register_action(view, cx, Editor::reveal_in_finder);
303 register_action(view, cx, Editor::copy_path);
304 register_action(view, cx, Editor::copy_relative_path);
305 register_action(view, cx, Editor::copy_highlight_json);
306 register_action(view, cx, Editor::copy_permalink_to_line);
307 register_action(view, cx, Editor::open_permalink_to_line);
308 register_action(view, cx, Editor::toggle_git_blame);
309 register_action(view, cx, Editor::toggle_git_blame_inline);
310 register_action(view, cx, |editor, action, cx| {
311 if let Some(task) = editor.format(action, cx) {
312 task.detach_and_log_err(cx);
313 } else {
314 cx.propagate();
315 }
316 });
317 register_action(view, cx, Editor::restart_language_server);
318 register_action(view, cx, Editor::show_character_palette);
319 register_action(view, cx, |editor, action, cx| {
320 if let Some(task) = editor.confirm_completion(action, cx) {
321 task.detach_and_log_err(cx);
322 } else {
323 cx.propagate();
324 }
325 });
326 register_action(view, cx, |editor, action, cx| {
327 if let Some(task) = editor.confirm_code_action(action, cx) {
328 task.detach_and_log_err(cx);
329 } else {
330 cx.propagate();
331 }
332 });
333 register_action(view, cx, |editor, action, cx| {
334 if let Some(task) = editor.rename(action, cx) {
335 task.detach_and_log_err(cx);
336 } else {
337 cx.propagate();
338 }
339 });
340 register_action(view, cx, |editor, action, cx| {
341 if let Some(task) = editor.confirm_rename(action, cx) {
342 task.detach_and_log_err(cx);
343 } else {
344 cx.propagate();
345 }
346 });
347 register_action(view, cx, |editor, action, cx| {
348 if let Some(task) = editor.find_all_references(action, cx) {
349 task.detach_and_log_err(cx);
350 } else {
351 cx.propagate();
352 }
353 });
354 register_action(view, cx, Editor::next_inline_completion);
355 register_action(view, cx, Editor::previous_inline_completion);
356 register_action(view, cx, Editor::show_inline_completion);
357 register_action(view, cx, Editor::context_menu_first);
358 register_action(view, cx, Editor::context_menu_prev);
359 register_action(view, cx, Editor::context_menu_next);
360 register_action(view, cx, Editor::context_menu_last);
361 register_action(view, cx, Editor::display_cursor_names);
362 register_action(view, cx, Editor::unique_lines_case_insensitive);
363 register_action(view, cx, Editor::unique_lines_case_sensitive);
364 register_action(view, cx, Editor::accept_partial_inline_completion);
365 register_action(view, cx, Editor::revert_selected_hunks);
366 }
367
368 fn register_key_listeners(&self, cx: &mut ElementContext, layout: &EditorLayout) {
369 let position_map = layout.position_map.clone();
370 cx.on_key_event({
371 let editor = self.editor.clone();
372 let text_hitbox = layout.text_hitbox.clone();
373 move |event: &ModifiersChangedEvent, phase, cx| {
374 if phase != DispatchPhase::Bubble {
375 return;
376 }
377
378 editor.update(cx, |editor, cx| {
379 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
380 })
381 }
382 });
383 }
384
385 fn modifiers_changed(
386 editor: &mut Editor,
387 event: &ModifiersChangedEvent,
388 position_map: &PositionMap,
389 text_hitbox: &Hitbox,
390 cx: &mut ViewContext<Editor>,
391 ) {
392 let mouse_position = cx.mouse_position();
393 if !text_hitbox.is_hovered(cx) {
394 return;
395 }
396
397 editor.update_hovered_link(
398 position_map.point_for_position(text_hitbox.bounds, mouse_position),
399 &position_map.snapshot,
400 event.modifiers,
401 cx,
402 )
403 }
404
405 fn mouse_left_down(
406 editor: &mut Editor,
407 event: &MouseDownEvent,
408 position_map: &PositionMap,
409 text_hitbox: &Hitbox,
410 gutter_hitbox: &Hitbox,
411 cx: &mut ViewContext<Editor>,
412 ) {
413 if cx.default_prevented() {
414 return;
415 }
416
417 let mut click_count = event.click_count;
418 let mut modifiers = event.modifiers;
419
420 if gutter_hitbox.is_hovered(cx) {
421 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
422 } else if !text_hitbox.is_hovered(cx) {
423 return;
424 }
425
426 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
427 match EditorSettings::get_global(cx).double_click_in_multibuffer {
428 DoubleClickInMultibuffer::Select => {
429 // do nothing special on double click, all selection logic is below
430 }
431 DoubleClickInMultibuffer::Open => {
432 if modifiers.alt {
433 // if double click is made with alt, pretend it's a regular double click without opening and alt,
434 // and run the selection logic.
435 modifiers.alt = false;
436 } else {
437 // if double click is made without alt, open the corresponding excerp
438 editor.open_excerpts(&OpenExcerpts, cx);
439 return;
440 }
441 }
442 }
443 }
444
445 let point_for_position =
446 position_map.point_for_position(text_hitbox.bounds, event.position);
447 let position = point_for_position.previous_valid;
448 if modifiers.shift && modifiers.alt {
449 editor.select(
450 SelectPhase::BeginColumnar {
451 position,
452 goal_column: point_for_position.exact_unclipped.column(),
453 },
454 cx,
455 );
456 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
457 {
458 editor.select(
459 SelectPhase::Extend {
460 position,
461 click_count,
462 },
463 cx,
464 );
465 } else {
466 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
467 let multi_cursor_modifier = match multi_cursor_setting {
468 MultiCursorModifier::Alt => modifiers.alt,
469 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
470 };
471 editor.select(
472 SelectPhase::Begin {
473 position,
474 add: multi_cursor_modifier,
475 click_count,
476 },
477 cx,
478 );
479 }
480
481 cx.stop_propagation();
482 }
483
484 fn mouse_right_down(
485 editor: &mut Editor,
486 event: &MouseDownEvent,
487 position_map: &PositionMap,
488 text_hitbox: &Hitbox,
489 cx: &mut ViewContext<Editor>,
490 ) {
491 if !text_hitbox.is_hovered(cx) {
492 return;
493 }
494 let point_for_position =
495 position_map.point_for_position(text_hitbox.bounds, event.position);
496 mouse_context_menu::deploy_context_menu(
497 editor,
498 event.position,
499 point_for_position.previous_valid,
500 cx,
501 );
502 cx.stop_propagation();
503 }
504
505 fn mouse_up(
506 editor: &mut Editor,
507 event: &MouseUpEvent,
508 position_map: &PositionMap,
509 text_hitbox: &Hitbox,
510 cx: &mut ViewContext<Editor>,
511 ) {
512 let end_selection = editor.has_pending_selection();
513 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
514
515 if end_selection {
516 editor.select(SelectPhase::End, cx);
517 }
518
519 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
520 let multi_cursor_modifier = match multi_cursor_setting {
521 MultiCursorModifier::Alt => event.modifiers.secondary(),
522 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
523 };
524
525 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
526 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
527 editor.handle_click_hovered_link(point, event.modifiers, cx);
528
529 cx.stop_propagation();
530 } else if end_selection {
531 cx.stop_propagation();
532 }
533 }
534
535 fn mouse_dragged(
536 editor: &mut Editor,
537 event: &MouseMoveEvent,
538 position_map: &PositionMap,
539 text_bounds: Bounds<Pixels>,
540 cx: &mut ViewContext<Editor>,
541 ) {
542 if !editor.has_pending_selection() {
543 return;
544 }
545
546 let point_for_position = position_map.point_for_position(text_bounds, event.position);
547 let mut scroll_delta = gpui::Point::<f32>::default();
548 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
549 let top = text_bounds.origin.y + vertical_margin;
550 let bottom = text_bounds.lower_left().y - vertical_margin;
551 if event.position.y < top {
552 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
553 }
554 if event.position.y > bottom {
555 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
556 }
557
558 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
559 let left = text_bounds.origin.x + horizontal_margin;
560 let right = text_bounds.upper_right().x - horizontal_margin;
561 if event.position.x < left {
562 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
563 }
564 if event.position.x > right {
565 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
566 }
567
568 editor.select(
569 SelectPhase::Update {
570 position: point_for_position.previous_valid,
571 goal_column: point_for_position.exact_unclipped.column(),
572 scroll_delta,
573 },
574 cx,
575 );
576 }
577
578 fn mouse_moved(
579 editor: &mut Editor,
580 event: &MouseMoveEvent,
581 position_map: &PositionMap,
582 text_hitbox: &Hitbox,
583 gutter_hitbox: &Hitbox,
584 cx: &mut ViewContext<Editor>,
585 ) {
586 let modifiers = event.modifiers;
587 let gutter_hovered = gutter_hitbox.is_hovered(cx);
588 editor.set_gutter_hovered(gutter_hovered, cx);
589
590 // Don't trigger hover popover if mouse is hovering over context menu
591 if text_hitbox.is_hovered(cx) {
592 let point_for_position =
593 position_map.point_for_position(text_hitbox.bounds, event.position);
594
595 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
596
597 if let Some(point) = point_for_position.as_valid() {
598 hover_at(editor, Some(point), cx);
599 Self::update_visible_cursor(editor, point, position_map, cx);
600 } else {
601 hover_at(editor, None, cx);
602 }
603 } else {
604 editor.hide_hovered_link(cx);
605 hover_at(editor, None, cx);
606 if gutter_hovered {
607 cx.stop_propagation();
608 }
609 }
610 }
611
612 fn update_visible_cursor(
613 editor: &mut Editor,
614 point: DisplayPoint,
615 position_map: &PositionMap,
616 cx: &mut ViewContext<Editor>,
617 ) {
618 let snapshot = &position_map.snapshot;
619 let Some(hub) = editor.collaboration_hub() else {
620 return;
621 };
622 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
623 ..DisplayPoint::new(
624 point.row(),
625 (point.column() + 1).min(snapshot.line_len(point.row())),
626 );
627
628 let range = snapshot
629 .buffer_snapshot
630 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
631 ..snapshot
632 .buffer_snapshot
633 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
634
635 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
636 return;
637 };
638 let key = crate::HoveredCursor {
639 replica_id: selection.replica_id,
640 selection_id: selection.selection.id,
641 };
642 editor.hovered_cursors.insert(
643 key.clone(),
644 cx.spawn(|editor, mut cx| async move {
645 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
646 editor
647 .update(&mut cx, |editor, cx| {
648 editor.hovered_cursors.remove(&key);
649 cx.notify();
650 })
651 .ok();
652 }),
653 );
654 cx.notify()
655 }
656
657 fn layout_selections(
658 &self,
659 start_anchor: Anchor,
660 end_anchor: Anchor,
661 snapshot: &EditorSnapshot,
662 start_row: u32,
663 end_row: u32,
664 cx: &mut ElementContext,
665 ) -> (
666 Vec<(PlayerColor, Vec<SelectionLayout>)>,
667 BTreeMap<u32, bool>,
668 Option<DisplayPoint>,
669 ) {
670 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
671 let mut active_rows = BTreeMap::new();
672 let mut newest_selection_head = None;
673 let editor = self.editor.read(cx);
674
675 if editor.show_local_selections {
676 let mut local_selections: Vec<Selection<Point>> = editor
677 .selections
678 .disjoint_in_range(start_anchor..end_anchor, cx);
679 local_selections.extend(editor.selections.pending(cx));
680 let mut layouts = Vec::new();
681 let newest = editor.selections.newest(cx);
682 for selection in local_selections.drain(..) {
683 let is_empty = selection.start == selection.end;
684 let is_newest = selection == newest;
685
686 let layout = SelectionLayout::new(
687 selection,
688 editor.selections.line_mode,
689 editor.cursor_shape,
690 &snapshot.display_snapshot,
691 is_newest,
692 editor.leader_peer_id.is_none(),
693 None,
694 );
695 if is_newest {
696 newest_selection_head = Some(layout.head);
697 }
698
699 for row in cmp::max(layout.active_rows.start, start_row)
700 ..=cmp::min(layout.active_rows.end, end_row)
701 {
702 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
703 *contains_non_empty_selection |= !is_empty;
704 }
705 layouts.push(layout);
706 }
707
708 let player = if editor.read_only(cx) {
709 cx.theme().players().read_only()
710 } else {
711 self.style.local_player
712 };
713
714 selections.push((player, layouts));
715 }
716
717 if let Some(collaboration_hub) = &editor.collaboration_hub {
718 // When following someone, render the local selections in their color.
719 if let Some(leader_id) = editor.leader_peer_id {
720 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
721 if let Some(participant_index) = collaboration_hub
722 .user_participant_indices(cx)
723 .get(&collaborator.user_id)
724 {
725 if let Some((local_selection_style, _)) = selections.first_mut() {
726 *local_selection_style = cx
727 .theme()
728 .players()
729 .color_for_participant(participant_index.0);
730 }
731 }
732 }
733 }
734
735 let mut remote_selections = HashMap::default();
736 for selection in snapshot.remote_selections_in_range(
737 &(start_anchor..end_anchor),
738 collaboration_hub.as_ref(),
739 cx,
740 ) {
741 let selection_style = if let Some(participant_index) = selection.participant_index {
742 cx.theme()
743 .players()
744 .color_for_participant(participant_index.0)
745 } else {
746 cx.theme().players().absent()
747 };
748
749 // Don't re-render the leader's selections, since the local selections
750 // match theirs.
751 if Some(selection.peer_id) == editor.leader_peer_id {
752 continue;
753 }
754 let key = HoveredCursor {
755 replica_id: selection.replica_id,
756 selection_id: selection.selection.id,
757 };
758
759 let is_shown =
760 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
761
762 remote_selections
763 .entry(selection.replica_id)
764 .or_insert((selection_style, Vec::new()))
765 .1
766 .push(SelectionLayout::new(
767 selection.selection,
768 selection.line_mode,
769 selection.cursor_shape,
770 &snapshot.display_snapshot,
771 false,
772 false,
773 if is_shown { selection.user_name } else { None },
774 ));
775 }
776
777 selections.extend(remote_selections.into_values());
778 }
779 (selections, active_rows, newest_selection_head)
780 }
781
782 #[allow(clippy::too_many_arguments)]
783 fn layout_folds(
784 &self,
785 snapshot: &EditorSnapshot,
786 content_origin: gpui::Point<Pixels>,
787 visible_anchor_range: Range<Anchor>,
788 visible_display_row_range: Range<u32>,
789 scroll_pixel_position: gpui::Point<Pixels>,
790 line_height: Pixels,
791 line_layouts: &[LineWithInvisibles],
792 cx: &mut ElementContext,
793 ) -> Vec<FoldLayout> {
794 snapshot
795 .folds_in_range(visible_anchor_range.clone())
796 .filter_map(|fold| {
797 let fold_range = fold.range.clone();
798 let display_range = fold.range.start.to_display_point(&snapshot)
799 ..fold.range.end.to_display_point(&snapshot);
800 debug_assert_eq!(display_range.start.row(), display_range.end.row());
801 let row = display_range.start.row();
802 debug_assert!(row < visible_display_row_range.end);
803 let line_layout = line_layouts
804 .get((row - visible_display_row_range.start) as usize)
805 .map(|l| &l.line)?;
806
807 let start_x = content_origin.x
808 + line_layout.x_for_index(display_range.start.column() as usize)
809 - scroll_pixel_position.x;
810 let start_y = content_origin.y + row as f32 * line_height - scroll_pixel_position.y;
811 let end_x = content_origin.x
812 + line_layout.x_for_index(display_range.end.column() as usize)
813 - scroll_pixel_position.x;
814
815 let fold_bounds = Bounds {
816 origin: point(start_x, start_y),
817 size: size(end_x - start_x, line_height),
818 };
819
820 let mut hover_element = div()
821 .id(fold.id)
822 .size_full()
823 .cursor_pointer()
824 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
825 .on_click(
826 cx.listener_for(&self.editor, move |editor: &mut Editor, _, cx| {
827 editor.unfold_ranges(
828 [fold_range.start..fold_range.end],
829 true,
830 false,
831 cx,
832 );
833 cx.stop_propagation();
834 }),
835 )
836 .into_any();
837 hover_element.layout(fold_bounds.origin, fold_bounds.size.into(), cx);
838 Some(FoldLayout {
839 display_range,
840 hover_element,
841 })
842 })
843 .collect()
844 }
845
846 #[allow(clippy::too_many_arguments)]
847 fn layout_cursors(
848 &self,
849 snapshot: &EditorSnapshot,
850 selections: &[(PlayerColor, Vec<SelectionLayout>)],
851 visible_display_row_range: Range<u32>,
852 line_layouts: &[LineWithInvisibles],
853 text_hitbox: &Hitbox,
854 content_origin: gpui::Point<Pixels>,
855 scroll_pixel_position: gpui::Point<Pixels>,
856 line_height: Pixels,
857 em_width: Pixels,
858 cx: &mut ElementContext,
859 ) -> Vec<CursorLayout> {
860 self.editor.update(cx, |editor, cx| {
861 let mut cursors = Vec::new();
862 for (player_color, selections) in selections {
863 for selection in selections {
864 let cursor_position = selection.head;
865 if (selection.is_local && !editor.show_local_cursors(cx))
866 || !visible_display_row_range.contains(&cursor_position.row())
867 {
868 continue;
869 }
870
871 let cursor_row_layout = &line_layouts
872 [(cursor_position.row() - visible_display_row_range.start) as usize]
873 .line;
874 let cursor_column = cursor_position.column() as usize;
875
876 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
877 let mut block_width =
878 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
879 if block_width == Pixels::ZERO {
880 block_width = em_width;
881 }
882 let block_text = if let CursorShape::Block = selection.cursor_shape {
883 snapshot.display_chars_at(cursor_position).next().and_then(
884 |(character, _)| {
885 let text = if character == '\n' {
886 SharedString::from(" ")
887 } else {
888 SharedString::from(character.to_string())
889 };
890 let len = text.len();
891
892 let font = cursor_row_layout
893 .font_id_for_index(cursor_column)
894 .and_then(|cursor_font_id| {
895 cx.text_system().get_font_for_id(cursor_font_id)
896 })
897 .unwrap_or(self.style.text.font());
898
899 cx.text_system()
900 .shape_line(
901 text,
902 cursor_row_layout.font_size,
903 &[TextRun {
904 len,
905 font: font,
906 color: self.style.background,
907 background_color: None,
908 strikethrough: None,
909 underline: None,
910 }],
911 )
912 .log_err()
913 },
914 )
915 } else {
916 None
917 };
918
919 let x = cursor_character_x - scroll_pixel_position.x;
920 let y = (cursor_position.row() as f32 - scroll_pixel_position.y / line_height)
921 * line_height;
922 if selection.is_newest {
923 editor.pixel_position_of_newest_cursor = Some(point(
924 text_hitbox.origin.x + x + block_width / 2.,
925 text_hitbox.origin.y + y + line_height / 2.,
926 ))
927 }
928
929 let mut cursor = CursorLayout {
930 color: player_color.cursor,
931 block_width,
932 origin: point(x, y),
933 line_height,
934 shape: selection.cursor_shape,
935 block_text,
936 cursor_name: None,
937 };
938 let cursor_name = selection.user_name.clone().map(|name| CursorName {
939 string: name,
940 color: self.style.background,
941 is_top_row: cursor_position.row() == 0,
942 });
943 cx.with_element_context(|cx| cursor.layout(content_origin, cursor_name, cx));
944 cursors.push(cursor);
945 }
946 }
947 cursors
948 })
949 }
950
951 fn layout_scrollbar(
952 &self,
953 snapshot: &EditorSnapshot,
954 bounds: Bounds<Pixels>,
955 scroll_position: gpui::Point<f32>,
956 line_height: Pixels,
957 height_in_lines: f32,
958 cx: &mut ElementContext,
959 ) -> Option<ScrollbarLayout> {
960 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
961 let show_scrollbars = match scrollbar_settings.show {
962 ShowScrollbar::Auto => {
963 let editor = self.editor.read(cx);
964 let is_singleton = editor.is_singleton(cx);
965 // Git
966 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
967 ||
968 // Buffer Search Results
969 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
970 ||
971 // Selected Symbol Occurrences
972 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
973 ||
974 // Diagnostics
975 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
976 ||
977 // Scrollmanager
978 editor.scroll_manager.scrollbars_visible()
979 }
980 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
981 ShowScrollbar::Always => true,
982 ShowScrollbar::Never => false,
983 };
984 if snapshot.mode != EditorMode::Full {
985 return None;
986 }
987
988 let visible_row_range = scroll_position.y..scroll_position.y + height_in_lines;
989
990 // If a drag took place after we started dragging the scrollbar,
991 // cancel the scrollbar drag.
992 if cx.has_active_drag() {
993 self.editor.update(cx, |editor, cx| {
994 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
995 });
996 }
997
998 let track_bounds = Bounds::from_corners(
999 point(self.scrollbar_left(&bounds), bounds.origin.y),
1000 point(bounds.lower_right().x, bounds.lower_left().y),
1001 );
1002
1003 let scroll_height = snapshot.max_point().row() as f32 + height_in_lines;
1004 let mut height = bounds.size.height;
1005 let mut first_row_y_offset = px(0.0);
1006
1007 // Impose a minimum height on the scrollbar thumb
1008 let row_height = height / scroll_height;
1009 let min_thumb_height = line_height;
1010 let thumb_height = height_in_lines * row_height;
1011 if thumb_height < min_thumb_height {
1012 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1013 height -= min_thumb_height - thumb_height;
1014 }
1015
1016 Some(ScrollbarLayout {
1017 hitbox: cx.insert_hitbox(track_bounds, false),
1018 visible_row_range,
1019 height,
1020 scroll_height,
1021 first_row_y_offset,
1022 row_height,
1023 visible: show_scrollbars,
1024 })
1025 }
1026
1027 #[allow(clippy::too_many_arguments)]
1028 fn layout_gutter_fold_indicators(
1029 &self,
1030 fold_statuses: Vec<Option<(FoldStatus, u32, bool)>>,
1031 line_height: Pixels,
1032 gutter_dimensions: &GutterDimensions,
1033 gutter_settings: crate::editor_settings::Gutter,
1034 scroll_pixel_position: gpui::Point<Pixels>,
1035 gutter_hitbox: &Hitbox,
1036 cx: &mut ElementContext,
1037 ) -> Vec<Option<AnyElement>> {
1038 let mut indicators = self.editor.update(cx, |editor, cx| {
1039 editor.render_fold_indicators(
1040 fold_statuses,
1041 &self.style,
1042 editor.gutter_hovered,
1043 line_height,
1044 gutter_dimensions.margin,
1045 cx,
1046 )
1047 });
1048
1049 for (ix, fold_indicator) in indicators.iter_mut().enumerate() {
1050 if let Some(fold_indicator) = fold_indicator {
1051 debug_assert!(gutter_settings.folds);
1052 let available_space = size(
1053 AvailableSpace::MinContent,
1054 AvailableSpace::Definite(line_height * 0.55),
1055 );
1056 let fold_indicator_size = fold_indicator.measure(available_space, cx);
1057
1058 let position = point(
1059 gutter_dimensions.width - gutter_dimensions.right_padding,
1060 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1061 );
1062 let centering_offset = point(
1063 (gutter_dimensions.right_padding + gutter_dimensions.margin
1064 - fold_indicator_size.width)
1065 / 2.,
1066 (line_height - fold_indicator_size.height) / 2.,
1067 );
1068 let origin = gutter_hitbox.origin + position + centering_offset;
1069 fold_indicator.layout(origin, available_space, cx);
1070 }
1071 }
1072
1073 indicators
1074 }
1075
1076 //Folds contained in a hunk are ignored apart from shrinking visual size
1077 //If a fold contains any hunks then that fold line is marked as modified
1078 fn layout_git_gutters(
1079 &self,
1080 display_rows: Range<u32>,
1081 snapshot: &EditorSnapshot,
1082 ) -> Vec<DisplayDiffHunk> {
1083 let buffer_snapshot = &snapshot.buffer_snapshot;
1084
1085 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1086 .to_point(snapshot)
1087 .row;
1088 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1089 .to_point(snapshot)
1090 .row;
1091
1092 buffer_snapshot
1093 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1094 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1095 .dedup()
1096 .collect()
1097 }
1098
1099 #[allow(clippy::too_many_arguments)]
1100 fn layout_inline_blame(
1101 &self,
1102 display_row: u32,
1103 display_snapshot: &DisplaySnapshot,
1104 line_layout: &LineWithInvisibles,
1105 em_width: Pixels,
1106 content_origin: gpui::Point<Pixels>,
1107 scroll_pixel_position: gpui::Point<Pixels>,
1108 line_height: Pixels,
1109 cx: &mut ElementContext,
1110 ) -> Option<AnyElement> {
1111 if !self
1112 .editor
1113 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1114 {
1115 return None;
1116 }
1117
1118 let workspace = self
1119 .editor
1120 .read(cx)
1121 .workspace
1122 .as_ref()
1123 .map(|(w, _)| w.clone());
1124
1125 let display_point = DisplayPoint::new(display_row, 0);
1126 let buffer_row = display_point.to_point(display_snapshot).row;
1127
1128 let blame = self.editor.read(cx).blame.clone()?;
1129 let blame_entry = blame
1130 .update(cx, |blame, cx| {
1131 blame.blame_for_rows([Some(buffer_row)], cx).next()
1132 })
1133 .flatten()?;
1134
1135 let mut element =
1136 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1137
1138 let start_y = content_origin.y
1139 + line_height * (display_row as f32 - scroll_pixel_position.y / line_height);
1140
1141 let start_x = {
1142 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1143
1144 let padded_line_width =
1145 line_layout.line.width + (em_width * INLINE_BLAME_PADDING_EM_WIDTHS);
1146
1147 let min_column = ProjectSettings::get_global(cx)
1148 .git
1149 .inline_blame
1150 .and_then(|settings| settings.min_column)
1151 .map(|col| self.column_pixels(col as usize, cx))
1152 .unwrap_or(px(0.));
1153
1154 content_origin.x + max(padded_line_width, min_column)
1155 };
1156
1157 let absolute_offset = point(start_x, start_y);
1158 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1159
1160 element.layout(absolute_offset, available_space, cx);
1161
1162 Some(element)
1163 }
1164
1165 #[allow(clippy::too_many_arguments)]
1166 fn layout_blame_entries(
1167 &self,
1168 buffer_rows: impl Iterator<Item = Option<u32>>,
1169 em_width: Pixels,
1170 scroll_position: gpui::Point<f32>,
1171 line_height: Pixels,
1172 gutter_hitbox: &Hitbox,
1173 max_width: Option<Pixels>,
1174 cx: &mut ElementContext,
1175 ) -> Option<Vec<AnyElement>> {
1176 if !self
1177 .editor
1178 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1179 {
1180 return None;
1181 }
1182
1183 let blame = self.editor.read(cx).blame.clone()?;
1184 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1185 blame.blame_for_rows(buffer_rows, cx).collect()
1186 });
1187
1188 let width = if let Some(max_width) = max_width {
1189 AvailableSpace::Definite(max_width)
1190 } else {
1191 AvailableSpace::MaxContent
1192 };
1193 let scroll_top = scroll_position.y * line_height;
1194 let start_x = em_width * 1;
1195
1196 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1197
1198 let shaped_lines = blamed_rows
1199 .into_iter()
1200 .enumerate()
1201 .flat_map(|(ix, blame_entry)| {
1202 if let Some(blame_entry) = blame_entry {
1203 let mut element = render_blame_entry(
1204 ix,
1205 &blame,
1206 blame_entry,
1207 &self.style,
1208 &mut last_used_color,
1209 self.editor.clone(),
1210 cx,
1211 );
1212
1213 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1214 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1215
1216 element.layout(absolute_offset, size(width, AvailableSpace::MinContent), cx);
1217
1218 Some(element)
1219 } else {
1220 None
1221 }
1222 })
1223 .collect();
1224
1225 Some(shaped_lines)
1226 }
1227
1228 fn layout_code_actions_indicator(
1229 &self,
1230 line_height: Pixels,
1231 newest_selection_head: DisplayPoint,
1232 scroll_pixel_position: gpui::Point<Pixels>,
1233 gutter_dimensions: &GutterDimensions,
1234 gutter_hitbox: &Hitbox,
1235 cx: &mut ElementContext,
1236 ) -> Option<AnyElement> {
1237 let mut active = false;
1238 let mut button = None;
1239 self.editor.update(cx, |editor, cx| {
1240 active = matches!(
1241 editor.context_menu.read().as_ref(),
1242 Some(crate::ContextMenu::CodeActions(_))
1243 );
1244 button = editor.render_code_actions_indicator(&self.style, active, cx);
1245 });
1246
1247 let mut button = button?.into_any_element();
1248 let available_space = size(
1249 AvailableSpace::MinContent,
1250 AvailableSpace::Definite(line_height),
1251 );
1252 let indicator_size = button.measure(available_space, cx);
1253
1254 let blame_width = gutter_dimensions
1255 .git_blame_entries_width
1256 .unwrap_or(Pixels::ZERO);
1257
1258 let mut x = blame_width;
1259 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
1260 - indicator_size.width
1261 - blame_width;
1262 x += available_width / 2.;
1263
1264 let mut y = newest_selection_head.row() as f32 * line_height - scroll_pixel_position.y;
1265 y += (line_height - indicator_size.height) / 2.;
1266
1267 button.layout(gutter_hitbox.origin + point(x, y), available_space, cx);
1268 Some(button)
1269 }
1270
1271 fn calculate_relative_line_numbers(
1272 &self,
1273 buffer_rows: Vec<Option<u32>>,
1274 rows: &Range<u32>,
1275 relative_to: Option<u32>,
1276 ) -> HashMap<u32, u32> {
1277 let mut relative_rows: HashMap<u32, u32> = Default::default();
1278 let Some(relative_to) = relative_to else {
1279 return relative_rows;
1280 };
1281
1282 let start = rows.start.min(relative_to);
1283
1284 let head_idx = relative_to - start;
1285 let mut delta = 1;
1286 let mut i = head_idx + 1;
1287 while i < buffer_rows.len() as u32 {
1288 if buffer_rows[i as usize].is_some() {
1289 if rows.contains(&(i + start)) {
1290 relative_rows.insert(i + start, delta);
1291 }
1292 delta += 1;
1293 }
1294 i += 1;
1295 }
1296 delta = 1;
1297 i = head_idx.min(buffer_rows.len() as u32 - 1);
1298 while i > 0 && buffer_rows[i as usize].is_none() {
1299 i -= 1;
1300 }
1301
1302 while i > 0 {
1303 i -= 1;
1304 if buffer_rows[i as usize].is_some() {
1305 if rows.contains(&(i + start)) {
1306 relative_rows.insert(i + start, delta);
1307 }
1308 delta += 1;
1309 }
1310 }
1311
1312 relative_rows
1313 }
1314
1315 fn layout_line_numbers(
1316 &self,
1317 rows: Range<u32>,
1318 buffer_rows: impl Iterator<Item = Option<u32>>,
1319 active_rows: &BTreeMap<u32, bool>,
1320 newest_selection_head: Option<DisplayPoint>,
1321 snapshot: &EditorSnapshot,
1322 cx: &ElementContext,
1323 ) -> (
1324 Vec<Option<ShapedLine>>,
1325 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1326 ) {
1327 let editor = self.editor.read(cx);
1328 let is_singleton = editor.is_singleton(cx);
1329 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1330 let newest = editor.selections.newest::<Point>(cx);
1331 SelectionLayout::new(
1332 newest,
1333 editor.selections.line_mode,
1334 editor.cursor_shape,
1335 &snapshot.display_snapshot,
1336 true,
1337 true,
1338 None,
1339 )
1340 .head
1341 });
1342 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1343 let include_line_numbers =
1344 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full;
1345 let include_fold_statuses =
1346 EditorSettings::get_global(cx).gutter.folds && snapshot.mode == EditorMode::Full;
1347 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1348 let mut fold_statuses = Vec::with_capacity(rows.len());
1349 let mut line_number = String::new();
1350 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1351 let relative_to = if is_relative {
1352 Some(newest_selection_head.row())
1353 } else {
1354 None
1355 };
1356
1357 let buffer_rows = buffer_rows.collect::<Vec<_>>();
1358 let relative_rows =
1359 self.calculate_relative_line_numbers(buffer_rows.clone(), &rows, relative_to);
1360
1361 for (ix, row) in buffer_rows.into_iter().enumerate() {
1362 let display_row = rows.start + ix as u32;
1363 let (active, color) = if active_rows.contains_key(&display_row) {
1364 (true, cx.theme().colors().editor_active_line_number)
1365 } else {
1366 (false, cx.theme().colors().editor_line_number)
1367 };
1368 if let Some(buffer_row) = row {
1369 if include_line_numbers {
1370 line_number.clear();
1371 let default_number = buffer_row + 1;
1372 let number = relative_rows
1373 .get(&(ix as u32 + rows.start))
1374 .unwrap_or(&default_number);
1375 write!(&mut line_number, "{}", number).unwrap();
1376 let run = TextRun {
1377 len: line_number.len(),
1378 font: self.style.text.font(),
1379 color,
1380 background_color: None,
1381 underline: None,
1382 strikethrough: None,
1383 };
1384 let shaped_line = cx
1385 .text_system()
1386 .shape_line(line_number.clone().into(), font_size, &[run])
1387 .unwrap();
1388 shaped_line_numbers.push(Some(shaped_line));
1389 }
1390 if include_fold_statuses {
1391 fold_statuses.push(
1392 is_singleton
1393 .then(|| {
1394 snapshot
1395 .fold_for_line(buffer_row)
1396 .map(|fold_status| (fold_status, buffer_row, active))
1397 })
1398 .flatten(),
1399 )
1400 }
1401 } else {
1402 fold_statuses.push(None);
1403 shaped_line_numbers.push(None);
1404 }
1405 }
1406
1407 (shaped_line_numbers, fold_statuses)
1408 }
1409
1410 fn layout_lines(
1411 &self,
1412 rows: Range<u32>,
1413 line_number_layouts: &[Option<ShapedLine>],
1414 snapshot: &EditorSnapshot,
1415 cx: &ElementContext,
1416 ) -> Vec<LineWithInvisibles> {
1417 if rows.start >= rows.end {
1418 return Vec::new();
1419 }
1420
1421 // Show the placeholder when the editor is empty
1422 if snapshot.is_empty() {
1423 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1424 let placeholder_color = cx.theme().colors().text_placeholder;
1425 let placeholder_text = snapshot.placeholder_text();
1426
1427 let placeholder_lines = placeholder_text
1428 .as_ref()
1429 .map_or("", AsRef::as_ref)
1430 .split('\n')
1431 .skip(rows.start as usize)
1432 .chain(iter::repeat(""))
1433 .take(rows.len());
1434 placeholder_lines
1435 .filter_map(move |line| {
1436 let run = TextRun {
1437 len: line.len(),
1438 font: self.style.text.font(),
1439 color: placeholder_color,
1440 background_color: None,
1441 underline: Default::default(),
1442 strikethrough: None,
1443 };
1444 cx.text_system()
1445 .shape_line(line.to_string().into(), font_size, &[run])
1446 .log_err()
1447 })
1448 .map(|line| LineWithInvisibles {
1449 line,
1450 invisibles: Vec::new(),
1451 })
1452 .collect()
1453 } else {
1454 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1455 LineWithInvisibles::from_chunks(
1456 chunks,
1457 &self.style.text,
1458 MAX_LINE_LEN,
1459 rows.len(),
1460 line_number_layouts,
1461 snapshot.mode,
1462 cx,
1463 )
1464 }
1465 }
1466
1467 #[allow(clippy::too_many_arguments)]
1468 fn build_blocks(
1469 &self,
1470 rows: Range<u32>,
1471 snapshot: &EditorSnapshot,
1472 hitbox: &Hitbox,
1473 text_hitbox: &Hitbox,
1474 scroll_width: &mut Pixels,
1475 gutter_dimensions: &GutterDimensions,
1476 em_width: Pixels,
1477 text_x: Pixels,
1478 line_height: Pixels,
1479 line_layouts: &[LineWithInvisibles],
1480 cx: &mut ElementContext,
1481 ) -> Vec<BlockLayout> {
1482 let mut block_id = 0;
1483 let (fixed_blocks, non_fixed_blocks) = snapshot
1484 .blocks_in_range(rows.clone())
1485 .partition::<Vec<_>, _>(|(_, block)| match block {
1486 TransformBlock::ExcerptHeader { .. } => false,
1487 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1488 });
1489
1490 let render_block = |block: &TransformBlock,
1491 available_space: Size<AvailableSpace>,
1492 block_id: usize,
1493 block_row_start: u32,
1494 cx: &mut ElementContext| {
1495 let mut element = match block {
1496 TransformBlock::Custom(block) => {
1497 let align_to = block
1498 .position()
1499 .to_point(&snapshot.buffer_snapshot)
1500 .to_display_point(snapshot);
1501 let anchor_x = text_x
1502 + if rows.contains(&align_to.row()) {
1503 line_layouts[(align_to.row() - rows.start) as usize]
1504 .line
1505 .x_for_index(align_to.column() as usize)
1506 } else {
1507 layout_line(align_to.row(), snapshot, &self.style, cx)
1508 .unwrap()
1509 .x_for_index(align_to.column() as usize)
1510 };
1511
1512 block.render(&mut BlockContext {
1513 context: cx,
1514 anchor_x,
1515 gutter_dimensions,
1516 line_height,
1517 em_width,
1518 block_id,
1519 max_width: text_hitbox.size.width.max(*scroll_width),
1520 editor_style: &self.style,
1521 })
1522 }
1523
1524 TransformBlock::ExcerptHeader {
1525 buffer,
1526 range,
1527 starts_new_buffer,
1528 height,
1529 ..
1530 } => {
1531 let include_root = self
1532 .editor
1533 .read(cx)
1534 .project
1535 .as_ref()
1536 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1537 .unwrap_or_default();
1538
1539 #[derive(Clone)]
1540 struct JumpData {
1541 position: Point,
1542 anchor: text::Anchor,
1543 path: ProjectPath,
1544 line_offset_from_top: u32,
1545 }
1546
1547 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
1548 let jump_path = ProjectPath {
1549 worktree_id: file.worktree_id(cx),
1550 path: file.path.clone(),
1551 };
1552 let jump_anchor = range
1553 .primary
1554 .as_ref()
1555 .map_or(range.context.start, |primary| primary.start);
1556
1557 let excerpt_start = range.context.start;
1558 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
1559 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
1560 0
1561 } else {
1562 let excerpt_start_row =
1563 language::ToPoint::to_point(&jump_anchor, buffer).row;
1564 jump_position.row - excerpt_start_row
1565 };
1566
1567 let line_offset_from_top =
1568 block_row_start + *height as u32 + offset_from_excerpt_start
1569 - snapshot
1570 .scroll_anchor
1571 .scroll_position(&snapshot.display_snapshot)
1572 .y as u32;
1573
1574 JumpData {
1575 position: jump_position,
1576 anchor: jump_anchor,
1577 path: jump_path,
1578 line_offset_from_top,
1579 }
1580 });
1581
1582 let element = if *starts_new_buffer {
1583 let path = buffer.resolve_file_path(cx, include_root);
1584 let mut filename = None;
1585 let mut parent_path = None;
1586 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
1587 if let Some(path) = path {
1588 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
1589 parent_path = path
1590 .parent()
1591 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
1592 }
1593
1594 v_flex()
1595 .id(("path header container", block_id))
1596 .size_full()
1597 .justify_center()
1598 .p(gpui::px(6.))
1599 .child(
1600 h_flex()
1601 .id("path header block")
1602 .size_full()
1603 .pl(gpui::px(12.))
1604 .pr(gpui::px(8.))
1605 .rounded_md()
1606 .shadow_md()
1607 .border()
1608 .border_color(cx.theme().colors().border)
1609 .bg(cx.theme().colors().editor_subheader_background)
1610 .justify_between()
1611 .hover(|style| style.bg(cx.theme().colors().element_hover))
1612 .child(
1613 h_flex().gap_3().child(
1614 h_flex()
1615 .gap_2()
1616 .child(
1617 filename
1618 .map(SharedString::from)
1619 .unwrap_or_else(|| "untitled".into()),
1620 )
1621 .when_some(parent_path, |then, path| {
1622 then.child(
1623 div().child(path).text_color(
1624 cx.theme().colors().text_muted,
1625 ),
1626 )
1627 }),
1628 ),
1629 )
1630 .when_some(jump_data.clone(), |this, jump_data| {
1631 this.cursor_pointer()
1632 .tooltip(|cx| {
1633 Tooltip::for_action(
1634 "Jump to File",
1635 &OpenExcerpts,
1636 cx,
1637 )
1638 })
1639 .on_mouse_down(MouseButton::Left, |_, cx| {
1640 cx.stop_propagation()
1641 })
1642 .on_click(cx.listener_for(&self.editor, {
1643 move |editor, _, cx| {
1644 editor.jump(
1645 jump_data.path.clone(),
1646 jump_data.position,
1647 jump_data.anchor,
1648 jump_data.line_offset_from_top,
1649 cx,
1650 );
1651 }
1652 }))
1653 }),
1654 )
1655 } else {
1656 v_flex()
1657 .id(("collapsed context", block_id))
1658 .size_full()
1659 .child(
1660 div()
1661 .flex()
1662 .v_flex()
1663 .justify_start()
1664 .id("jump to collapsed context")
1665 .w(relative(1.0))
1666 .h_full()
1667 .child(
1668 div()
1669 .h_px()
1670 .w_full()
1671 .bg(cx.theme().colors().border_variant)
1672 .group_hover("excerpt-jump-action", |style| {
1673 style.bg(cx.theme().colors().border)
1674 }),
1675 ),
1676 )
1677 .child(
1678 h_flex()
1679 .justify_end()
1680 .flex_none()
1681 .w(
1682 gutter_dimensions.width - (gutter_dimensions.left_padding), // + gutter_dimensions.right_padding)
1683 )
1684 .h_full()
1685 .child(
1686 ButtonLike::new("jump-icon")
1687 .style(ButtonStyle::Transparent)
1688 .child(
1689 svg()
1690 .path(IconName::ArrowUpRight.path())
1691 .size(IconSize::XSmall.rems())
1692 .text_color(cx.theme().colors().border)
1693 .group_hover("excerpt-jump-action", |style| {
1694 style.text_color(
1695 cx.theme().colors().editor_line_number,
1696 )
1697 }),
1698 )
1699 .when_some(jump_data.clone(), |this, jump_data| {
1700 this.on_click(cx.listener_for(&self.editor, {
1701 let path = jump_data.path.clone();
1702 move |editor, _, cx| {
1703 editor.jump(
1704 path.clone(),
1705 jump_data.position,
1706 jump_data.anchor,
1707 jump_data.line_offset_from_top,
1708 cx,
1709 );
1710 }
1711 }))
1712 .tooltip({
1713 move |cx| {
1714 Tooltip::for_action(
1715 format!(
1716 "Jump to {}:L{}",
1717 jump_data.path.path.display(),
1718 jump_data.position.row + 1
1719 ),
1720 &OpenExcerpts,
1721 cx,
1722 )
1723 }
1724 })
1725 }),
1726 ),
1727 )
1728 .group("excerpt-jump-action")
1729 .cursor_pointer()
1730 .when_some(jump_data.clone(), |this, jump_data| {
1731 this.on_click(cx.listener_for(&self.editor, {
1732 let path = jump_data.path.clone();
1733 move |editor, _, cx| {
1734 cx.stop_propagation();
1735
1736 editor.jump(
1737 path.clone(),
1738 jump_data.position,
1739 jump_data.anchor,
1740 jump_data.line_offset_from_top,
1741 cx,
1742 );
1743 }
1744 }))
1745 .tooltip(move |cx| {
1746 Tooltip::for_action(
1747 format!(
1748 "Jump to {}:L{}",
1749 jump_data.path.path.display(),
1750 jump_data.position.row + 1
1751 ),
1752 &OpenExcerpts,
1753 cx,
1754 )
1755 })
1756 })
1757 };
1758 element.into_any()
1759 }
1760 };
1761
1762 let size = element.measure(available_space, cx);
1763 (element, size)
1764 };
1765
1766 let mut fixed_block_max_width = Pixels::ZERO;
1767 let mut blocks = Vec::new();
1768 for (row, block) in fixed_blocks {
1769 let available_space = size(
1770 AvailableSpace::MinContent,
1771 AvailableSpace::Definite(block.height() as f32 * line_height),
1772 );
1773 let (element, element_size) = render_block(block, available_space, block_id, row, cx);
1774 block_id += 1;
1775 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
1776 blocks.push(BlockLayout {
1777 row,
1778 element,
1779 available_space,
1780 style: BlockStyle::Fixed,
1781 });
1782 }
1783 for (row, block) in non_fixed_blocks {
1784 let style = match block {
1785 TransformBlock::Custom(block) => block.style(),
1786 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
1787 };
1788 let width = match style {
1789 BlockStyle::Sticky => hitbox.size.width,
1790 BlockStyle::Flex => hitbox
1791 .size
1792 .width
1793 .max(fixed_block_max_width)
1794 .max(gutter_dimensions.width + *scroll_width),
1795 BlockStyle::Fixed => unreachable!(),
1796 };
1797 let available_space = size(
1798 AvailableSpace::Definite(width),
1799 AvailableSpace::Definite(block.height() as f32 * line_height),
1800 );
1801 let (element, _) = render_block(block, available_space, block_id, row, cx);
1802 block_id += 1;
1803 blocks.push(BlockLayout {
1804 row,
1805 element,
1806 available_space,
1807 style,
1808 });
1809 }
1810
1811 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
1812 blocks
1813 }
1814
1815 fn layout_blocks(
1816 &self,
1817 blocks: &mut Vec<BlockLayout>,
1818 hitbox: &Hitbox,
1819 line_height: Pixels,
1820 scroll_pixel_position: gpui::Point<Pixels>,
1821 cx: &mut ElementContext,
1822 ) {
1823 for block in blocks {
1824 let mut origin = hitbox.origin
1825 + point(
1826 Pixels::ZERO,
1827 block.row as f32 * line_height - scroll_pixel_position.y,
1828 );
1829 if !matches!(block.style, BlockStyle::Sticky) {
1830 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
1831 }
1832 block.element.layout(origin, block.available_space, cx);
1833 }
1834 }
1835
1836 #[allow(clippy::too_many_arguments)]
1837 fn layout_context_menu(
1838 &self,
1839 line_height: Pixels,
1840 hitbox: &Hitbox,
1841 text_hitbox: &Hitbox,
1842 content_origin: gpui::Point<Pixels>,
1843 start_row: u32,
1844 scroll_pixel_position: gpui::Point<Pixels>,
1845 line_layouts: &[LineWithInvisibles],
1846 newest_selection_head: DisplayPoint,
1847 cx: &mut ElementContext,
1848 ) -> bool {
1849 let max_height = cmp::min(
1850 12. * line_height,
1851 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
1852 );
1853 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
1854 if editor.context_menu_visible() {
1855 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
1856 } else {
1857 None
1858 }
1859 }) else {
1860 return false;
1861 };
1862
1863 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1864 let context_menu_size = context_menu.measure(available_space, cx);
1865
1866 let cursor_row_layout = &line_layouts[(position.row() - start_row) as usize].line;
1867 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1868 let y = (position.row() + 1) as f32 * line_height - scroll_pixel_position.y;
1869 let mut list_origin = content_origin + point(x, y);
1870 let list_width = context_menu_size.width;
1871 let list_height = context_menu_size.height;
1872
1873 // Snap the right edge of the list to the right edge of the window if
1874 // its horizontal bounds overflow.
1875 if list_origin.x + list_width > cx.viewport_size().width {
1876 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1877 }
1878
1879 if list_origin.y + list_height > text_hitbox.lower_right().y {
1880 list_origin.y -= line_height + list_height;
1881 }
1882
1883 cx.defer_draw(context_menu, list_origin, 1);
1884 true
1885 }
1886
1887 fn layout_mouse_context_menu(&self, cx: &mut ElementContext) -> Option<AnyElement> {
1888 let mouse_context_menu = self.editor.read(cx).mouse_context_menu.as_ref()?;
1889 let mut element = deferred(
1890 anchored()
1891 .position(mouse_context_menu.position)
1892 .child(mouse_context_menu.context_menu.clone())
1893 .anchor(AnchorCorner::TopLeft)
1894 .snap_to_window(),
1895 )
1896 .with_priority(1)
1897 .into_any();
1898
1899 element.layout(gpui::Point::default(), AvailableSpace::min_size(), cx);
1900 Some(element)
1901 }
1902
1903 #[allow(clippy::too_many_arguments)]
1904 fn layout_hover_popovers(
1905 &self,
1906 snapshot: &EditorSnapshot,
1907 hitbox: &Hitbox,
1908 text_hitbox: &Hitbox,
1909 visible_display_row_range: Range<u32>,
1910 content_origin: gpui::Point<Pixels>,
1911 scroll_pixel_position: gpui::Point<Pixels>,
1912 line_layouts: &[LineWithInvisibles],
1913 line_height: Pixels,
1914 em_width: Pixels,
1915 cx: &mut ElementContext,
1916 ) {
1917 struct MeasuredHoverPopover {
1918 element: AnyElement,
1919 size: Size<Pixels>,
1920 horizontal_offset: Pixels,
1921 }
1922
1923 let max_size = size(
1924 (120. * em_width) // Default size
1925 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
1926 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1927 (16. * line_height) // Default size
1928 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
1929 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1930 );
1931
1932 let hover_popovers = self.editor.update(cx, |editor, cx| {
1933 editor.hover_state.render(
1934 &snapshot,
1935 &self.style,
1936 visible_display_row_range.clone(),
1937 max_size,
1938 editor.workspace.as_ref().map(|(w, _)| w.clone()),
1939 cx,
1940 )
1941 });
1942 let Some((position, hover_popovers)) = hover_popovers else {
1943 return;
1944 };
1945
1946 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1947
1948 // This is safe because we check on layout whether the required row is available
1949 let hovered_row_layout =
1950 &line_layouts[(position.row() - visible_display_row_range.start) as usize].line;
1951
1952 // Compute Hovered Point
1953 let x =
1954 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1955 let y = position.row() as f32 * line_height - scroll_pixel_position.y;
1956 let hovered_point = content_origin + point(x, y);
1957
1958 let mut overall_height = Pixels::ZERO;
1959 let mut measured_hover_popovers = Vec::new();
1960 for mut hover_popover in hover_popovers {
1961 let size = hover_popover.measure(available_space, cx);
1962 let horizontal_offset =
1963 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
1964
1965 overall_height += HOVER_POPOVER_GAP + size.height;
1966
1967 measured_hover_popovers.push(MeasuredHoverPopover {
1968 element: hover_popover,
1969 size,
1970 horizontal_offset,
1971 });
1972 }
1973 overall_height += HOVER_POPOVER_GAP;
1974
1975 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
1976 let mut occlusion = div()
1977 .size_full()
1978 .occlude()
1979 .on_mouse_move(|_, cx| cx.stop_propagation())
1980 .into_any_element();
1981 occlusion.measure(size(width, HOVER_POPOVER_GAP).into(), cx);
1982 cx.defer_draw(occlusion, origin, 2);
1983 }
1984
1985 if hovered_point.y > overall_height {
1986 // There is enough space above. Render popovers above the hovered point
1987 let mut current_y = hovered_point.y;
1988 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
1989 let size = popover.size;
1990 let popover_origin = point(
1991 hovered_point.x + popover.horizontal_offset,
1992 current_y - size.height,
1993 );
1994
1995 cx.defer_draw(popover.element, popover_origin, 2);
1996 if position != itertools::Position::Last {
1997 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
1998 draw_occluder(size.width, origin, cx);
1999 }
2000
2001 current_y = popover_origin.y - HOVER_POPOVER_GAP;
2002 }
2003 } else {
2004 // There is not enough space above. Render popovers below the hovered point
2005 let mut current_y = hovered_point.y + line_height;
2006 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2007 let size = popover.size;
2008 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
2009
2010 cx.defer_draw(popover.element, popover_origin, 2);
2011 if position != itertools::Position::Last {
2012 let origin = point(popover_origin.x, popover_origin.y + size.height);
2013 draw_occluder(size.width, origin, cx);
2014 }
2015
2016 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
2017 }
2018 }
2019 }
2020
2021 fn paint_background(&self, layout: &EditorLayout, cx: &mut ElementContext) {
2022 cx.paint_layer(layout.hitbox.bounds, |cx| {
2023 let scroll_top = layout.position_map.snapshot.scroll_position().y;
2024 let gutter_bg = cx.theme().colors().editor_gutter_background;
2025 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
2026 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
2027
2028 if let EditorMode::Full = layout.mode {
2029 let mut active_rows = layout.active_rows.iter().peekable();
2030 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
2031 let mut end_row = *start_row;
2032 while active_rows.peek().map_or(false, |r| {
2033 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
2034 }) {
2035 active_rows.next().unwrap();
2036 end_row += 1;
2037 }
2038
2039 if !contains_non_empty_selection {
2040 let origin = point(
2041 layout.hitbox.origin.x,
2042 layout.hitbox.origin.y
2043 + (*start_row as f32 - scroll_top)
2044 * layout.position_map.line_height,
2045 );
2046 let size = size(
2047 layout.hitbox.size.width,
2048 layout.position_map.line_height * (end_row - start_row + 1) as f32,
2049 );
2050 let active_line_bg = cx.theme().colors().editor_active_line_background;
2051 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
2052 }
2053 }
2054
2055 let mut paint_highlight =
2056 |highlight_row_start: u32, highlight_row_end: u32, color| {
2057 let origin = point(
2058 layout.hitbox.origin.x,
2059 layout.hitbox.origin.y
2060 + (highlight_row_start as f32 - scroll_top)
2061 * layout.position_map.line_height,
2062 );
2063 let size = size(
2064 layout.hitbox.size.width,
2065 layout.position_map.line_height
2066 * (highlight_row_end + 1 - highlight_row_start) as f32,
2067 );
2068 cx.paint_quad(fill(Bounds { origin, size }, color));
2069 };
2070
2071 let mut last_row = None;
2072 let mut highlight_row_start = 0u32;
2073 let mut highlight_row_end = 0u32;
2074 for (&row, &color) in &layout.highlighted_rows {
2075 let paint = last_row.map_or(false, |(last_row, last_color)| {
2076 last_color != color || last_row + 1 < row
2077 });
2078
2079 if paint {
2080 let paint_range_is_unfinished = highlight_row_end == 0;
2081 if paint_range_is_unfinished {
2082 highlight_row_end = row;
2083 last_row = None;
2084 }
2085 paint_highlight(highlight_row_start, highlight_row_end, color);
2086 highlight_row_start = 0;
2087 highlight_row_end = 0;
2088 if !paint_range_is_unfinished {
2089 highlight_row_start = row;
2090 last_row = Some((row, color));
2091 }
2092 } else {
2093 if last_row.is_none() {
2094 highlight_row_start = row;
2095 } else {
2096 highlight_row_end = row;
2097 }
2098 last_row = Some((row, color));
2099 }
2100 }
2101 if let Some((row, hsla)) = last_row {
2102 highlight_row_end = row;
2103 paint_highlight(highlight_row_start, highlight_row_end, hsla);
2104 }
2105
2106 let scroll_left =
2107 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
2108
2109 for (wrap_position, active) in layout.wrap_guides.iter() {
2110 let x = (layout.text_hitbox.origin.x
2111 + *wrap_position
2112 + layout.position_map.em_width / 2.)
2113 - scroll_left;
2114
2115 let show_scrollbars = layout
2116 .scrollbar_layout
2117 .as_ref()
2118 .map_or(false, |scrollbar| scrollbar.visible);
2119 if x < layout.text_hitbox.origin.x
2120 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
2121 {
2122 continue;
2123 }
2124
2125 let color = if *active {
2126 cx.theme().colors().editor_active_wrap_guide
2127 } else {
2128 cx.theme().colors().editor_wrap_guide
2129 };
2130 cx.paint_quad(fill(
2131 Bounds {
2132 origin: point(x, layout.text_hitbox.origin.y),
2133 size: size(px(1.), layout.text_hitbox.size.height),
2134 },
2135 color,
2136 ));
2137 }
2138 }
2139 })
2140 }
2141
2142 fn paint_gutter(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2143 let line_height = layout.position_map.line_height;
2144
2145 let scroll_position = layout.position_map.snapshot.scroll_position();
2146 let scroll_top = scroll_position.y * line_height;
2147
2148 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
2149
2150 let show_git_gutter = matches!(
2151 ProjectSettings::get_global(cx).git.git_gutter,
2152 Some(GitGutterSetting::TrackedFiles)
2153 );
2154
2155 if show_git_gutter {
2156 Self::paint_diff_hunks(layout, cx);
2157 }
2158
2159 if layout.blamed_display_rows.is_some() {
2160 self.paint_blamed_display_rows(layout, cx);
2161 }
2162
2163 for (ix, line) in layout.line_numbers.iter().enumerate() {
2164 if let Some(line) = line {
2165 let line_origin = layout.gutter_hitbox.origin
2166 + point(
2167 layout.gutter_hitbox.size.width
2168 - line.width
2169 - layout.gutter_dimensions.right_padding,
2170 ix as f32 * line_height - (scroll_top % line_height),
2171 );
2172
2173 line.paint(line_origin, line_height, cx).log_err();
2174 }
2175 }
2176
2177 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2178 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2179 for fold_indicator in layout.fold_indicators.iter_mut().flatten() {
2180 fold_indicator.paint(cx);
2181 }
2182 });
2183
2184 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
2185 indicator.paint(cx);
2186 }
2187 })
2188 }
2189
2190 fn paint_diff_hunks(layout: &EditorLayout, cx: &mut ElementContext) {
2191 if layout.display_hunks.is_empty() {
2192 return;
2193 }
2194
2195 let line_height = layout.position_map.line_height;
2196
2197 let scroll_position = layout.position_map.snapshot.scroll_position();
2198 let scroll_top = scroll_position.y * line_height;
2199
2200 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2201 for hunk in &layout.display_hunks {
2202 let (display_row_range, status) = match hunk {
2203 //TODO: This rendering is entirely a horrible hack
2204 &DisplayDiffHunk::Folded { display_row: row } => {
2205 let start_y = row as f32 * line_height - scroll_top;
2206 let end_y = start_y + line_height;
2207
2208 let width = 0.275 * line_height;
2209 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2210 let highlight_size = size(width * 2., end_y - start_y);
2211 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2212 cx.paint_quad(quad(
2213 highlight_bounds,
2214 Corners::all(1. * line_height),
2215 cx.theme().status().modified,
2216 Edges::default(),
2217 transparent_black(),
2218 ));
2219
2220 continue;
2221 }
2222
2223 DisplayDiffHunk::Unfolded {
2224 display_row_range,
2225 status,
2226 } => (display_row_range, status),
2227 };
2228
2229 let color = match status {
2230 DiffHunkStatus::Added => cx.theme().status().created,
2231 DiffHunkStatus::Modified => cx.theme().status().modified,
2232
2233 //TODO: This rendering is entirely a horrible hack
2234 DiffHunkStatus::Removed => {
2235 let row = display_row_range.start;
2236
2237 let offset = line_height / 2.;
2238 let start_y = row as f32 * line_height - offset - scroll_top;
2239 let end_y = start_y + line_height;
2240
2241 let width = 0.275 * line_height;
2242 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2243 let highlight_size = size(width * 2., end_y - start_y);
2244 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2245 cx.paint_quad(quad(
2246 highlight_bounds,
2247 Corners::all(1. * line_height),
2248 cx.theme().status().deleted,
2249 Edges::default(),
2250 transparent_black(),
2251 ));
2252
2253 continue;
2254 }
2255 };
2256
2257 let start_row = display_row_range.start;
2258 let end_row = display_row_range.end;
2259 // If we're in a multibuffer, row range span might include an
2260 // excerpt header, so if we were to draw the marker straight away,
2261 // the hunk might include the rows of that header.
2262 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
2263 // Instead, we simply check whether the range we're dealing with includes
2264 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
2265 let end_row_in_current_excerpt = layout
2266 .position_map
2267 .snapshot
2268 .blocks_in_range(start_row..end_row)
2269 .find_map(|(start_row, block)| {
2270 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
2271 Some(start_row)
2272 } else {
2273 None
2274 }
2275 })
2276 .unwrap_or(end_row);
2277
2278 let start_y = start_row as f32 * line_height - scroll_top;
2279 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
2280
2281 let width = 0.275 * line_height;
2282 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2283 let highlight_size = size(width * 2., end_y - start_y);
2284 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2285 cx.paint_quad(quad(
2286 highlight_bounds,
2287 Corners::all(0.05 * line_height),
2288 color,
2289 Edges::default(),
2290 transparent_black(),
2291 ));
2292 }
2293 })
2294 }
2295
2296 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2297 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
2298 return;
2299 };
2300
2301 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2302 for mut blame_element in blamed_display_rows.into_iter() {
2303 blame_element.paint(cx);
2304 }
2305 })
2306 }
2307
2308 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2309 cx.with_content_mask(
2310 Some(ContentMask {
2311 bounds: layout.text_hitbox.bounds,
2312 }),
2313 |cx| {
2314 let cursor_style = if self
2315 .editor
2316 .read(cx)
2317 .hovered_link_state
2318 .as_ref()
2319 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
2320 {
2321 CursorStyle::PointingHand
2322 } else {
2323 CursorStyle::IBeam
2324 };
2325 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
2326
2327 cx.with_element_id(Some("folds"), |cx| self.paint_folds(layout, cx));
2328 let invisible_display_ranges = self.paint_highlights(layout, cx);
2329 self.paint_lines(&invisible_display_ranges, layout, cx);
2330 self.paint_redactions(layout, cx);
2331 self.paint_cursors(layout, cx);
2332 self.paint_inline_blame(layout, cx);
2333 },
2334 )
2335 }
2336
2337 fn paint_highlights(
2338 &mut self,
2339 layout: &mut EditorLayout,
2340 cx: &mut ElementContext,
2341 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
2342 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2343 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
2344 let line_end_overshoot = 0.15 * layout.position_map.line_height;
2345 for (range, color) in &layout.highlighted_ranges {
2346 self.paint_highlighted_range(
2347 range.clone(),
2348 *color,
2349 Pixels::ZERO,
2350 line_end_overshoot,
2351 layout,
2352 cx,
2353 );
2354 }
2355
2356 let corner_radius = 0.15 * layout.position_map.line_height;
2357
2358 for (player_color, selections) in &layout.selections {
2359 for selection in selections.into_iter() {
2360 self.paint_highlighted_range(
2361 selection.range.clone(),
2362 player_color.selection,
2363 corner_radius,
2364 corner_radius * 2.,
2365 layout,
2366 cx,
2367 );
2368
2369 if selection.is_local && !selection.range.is_empty() {
2370 invisible_display_ranges.push(selection.range.clone());
2371 }
2372 }
2373 }
2374 invisible_display_ranges
2375 })
2376 }
2377
2378 fn paint_lines(
2379 &mut self,
2380 invisible_display_ranges: &[Range<DisplayPoint>],
2381 layout: &EditorLayout,
2382 cx: &mut ElementContext,
2383 ) {
2384 let whitespace_setting = self
2385 .editor
2386 .read(cx)
2387 .buffer
2388 .read(cx)
2389 .settings_at(0, cx)
2390 .show_whitespaces;
2391
2392 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
2393 let row = layout.visible_display_row_range.start + ix as u32;
2394 line_with_invisibles.draw(
2395 layout,
2396 row,
2397 layout.content_origin,
2398 whitespace_setting,
2399 invisible_display_ranges,
2400 cx,
2401 )
2402 }
2403 }
2404
2405 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2406 if layout.redacted_ranges.is_empty() {
2407 return;
2408 }
2409
2410 let line_end_overshoot = layout.line_end_overshoot();
2411
2412 // A softer than perfect black
2413 let redaction_color = gpui::rgb(0x0e1111);
2414
2415 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2416 for range in layout.redacted_ranges.iter() {
2417 self.paint_highlighted_range(
2418 range.clone(),
2419 redaction_color.into(),
2420 Pixels::ZERO,
2421 line_end_overshoot,
2422 layout,
2423 cx,
2424 );
2425 }
2426 });
2427 }
2428
2429 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2430 for cursor in &mut layout.cursors {
2431 cursor.paint(layout.content_origin, cx);
2432 }
2433 }
2434
2435 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2436 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
2437 return;
2438 };
2439
2440 let thumb_bounds = scrollbar_layout.thumb_bounds();
2441 if scrollbar_layout.visible {
2442 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
2443 cx.paint_quad(quad(
2444 scrollbar_layout.hitbox.bounds,
2445 Corners::default(),
2446 cx.theme().colors().scrollbar_track_background,
2447 Edges {
2448 top: Pixels::ZERO,
2449 right: Pixels::ZERO,
2450 bottom: Pixels::ZERO,
2451 left: ScrollbarLayout::BORDER_WIDTH,
2452 },
2453 cx.theme().colors().scrollbar_track_border,
2454 ));
2455
2456 // Refresh scrollbar markers in the background. Below, we paint whatever markers have already been computed.
2457 self.refresh_scrollbar_markers(layout, scrollbar_layout, cx);
2458
2459 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
2460 for marker in markers.iter() {
2461 let mut marker = marker.clone();
2462 marker.bounds.origin += scrollbar_layout.hitbox.origin;
2463 cx.paint_quad(marker);
2464 }
2465
2466 cx.paint_quad(quad(
2467 thumb_bounds,
2468 Corners::default(),
2469 cx.theme().colors().scrollbar_thumb_background,
2470 Edges {
2471 top: Pixels::ZERO,
2472 right: Pixels::ZERO,
2473 bottom: Pixels::ZERO,
2474 left: ScrollbarLayout::BORDER_WIDTH,
2475 },
2476 cx.theme().colors().scrollbar_thumb_border,
2477 ));
2478 });
2479 }
2480
2481 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
2482
2483 let scroll_height = scrollbar_layout.scroll_height;
2484 let height = scrollbar_layout.height;
2485 let row_range = scrollbar_layout.visible_row_range.clone();
2486
2487 cx.on_mouse_event({
2488 let editor = self.editor.clone();
2489 let hitbox = scrollbar_layout.hitbox.clone();
2490 let mut mouse_position = cx.mouse_position();
2491 move |event: &MouseMoveEvent, phase, cx| {
2492 if phase == DispatchPhase::Capture {
2493 return;
2494 }
2495
2496 editor.update(cx, |editor, cx| {
2497 if event.pressed_button == Some(MouseButton::Left)
2498 && editor.scroll_manager.is_dragging_scrollbar()
2499 {
2500 let y = mouse_position.y;
2501 let new_y = event.position.y;
2502 if (hitbox.top()..hitbox.bottom()).contains(&y) {
2503 let mut position = editor.scroll_position(cx);
2504 position.y += (new_y - y) * scroll_height / height;
2505 if position.y < 0.0 {
2506 position.y = 0.0;
2507 }
2508 editor.set_scroll_position(position, cx);
2509 }
2510
2511 mouse_position = event.position;
2512 cx.stop_propagation();
2513 } else {
2514 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2515 if hitbox.is_hovered(cx) {
2516 editor.scroll_manager.show_scrollbar(cx);
2517 }
2518 }
2519 })
2520 }
2521 });
2522
2523 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
2524 cx.on_mouse_event({
2525 let editor = self.editor.clone();
2526 move |_: &MouseUpEvent, phase, cx| {
2527 if phase == DispatchPhase::Capture {
2528 return;
2529 }
2530
2531 editor.update(cx, |editor, cx| {
2532 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2533 cx.stop_propagation();
2534 });
2535 }
2536 });
2537 } else {
2538 cx.on_mouse_event({
2539 let editor = self.editor.clone();
2540 let hitbox = scrollbar_layout.hitbox.clone();
2541 move |event: &MouseDownEvent, phase, cx| {
2542 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
2543 return;
2544 }
2545
2546 editor.update(cx, |editor, cx| {
2547 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
2548
2549 let y = event.position.y;
2550 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
2551 let center_row =
2552 ((y - hitbox.top()) * scroll_height / height).round() as u32;
2553 let top_row = center_row
2554 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
2555 let mut position = editor.scroll_position(cx);
2556 position.y = top_row as f32;
2557 editor.set_scroll_position(position, cx);
2558 } else {
2559 editor.scroll_manager.show_scrollbar(cx);
2560 }
2561
2562 cx.stop_propagation();
2563 });
2564 }
2565 });
2566 }
2567 }
2568
2569 fn refresh_scrollbar_markers(
2570 &self,
2571 layout: &EditorLayout,
2572 scrollbar_layout: &ScrollbarLayout,
2573 cx: &mut ElementContext,
2574 ) {
2575 self.editor.update(cx, |editor, cx| {
2576 if !editor.is_singleton(cx)
2577 || !editor
2578 .scrollbar_marker_state
2579 .should_refresh(scrollbar_layout.hitbox.size)
2580 {
2581 return;
2582 }
2583
2584 let scrollbar_layout = scrollbar_layout.clone();
2585 let background_highlights = editor.background_highlights.clone();
2586 let snapshot = layout.position_map.snapshot.clone();
2587 let theme = cx.theme().clone();
2588 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2589 let max_row = layout.max_row;
2590
2591 editor.scrollbar_marker_state.dirty = false;
2592 editor.scrollbar_marker_state.pending_refresh =
2593 Some(cx.spawn(|editor, mut cx| async move {
2594 let scrollbar_size = scrollbar_layout.hitbox.size;
2595 let scrollbar_markers = cx
2596 .background_executor()
2597 .spawn(async move {
2598 let mut marker_quads = Vec::new();
2599
2600 if scrollbar_settings.git_diff {
2601 let marker_row_ranges = snapshot
2602 .buffer_snapshot
2603 .git_diff_hunks_in_range(0..max_row)
2604 .map(|hunk| {
2605 let start_display_row =
2606 Point::new(hunk.associated_range.start, 0)
2607 .to_display_point(&snapshot.display_snapshot)
2608 .row();
2609 let mut end_display_row =
2610 Point::new(hunk.associated_range.end, 0)
2611 .to_display_point(&snapshot.display_snapshot)
2612 .row();
2613 if end_display_row != start_display_row {
2614 end_display_row -= 1;
2615 }
2616 let color = match hunk.status() {
2617 DiffHunkStatus::Added => theme.status().created,
2618 DiffHunkStatus::Modified => theme.status().modified,
2619 DiffHunkStatus::Removed => theme.status().deleted,
2620 };
2621 ColoredRange {
2622 start: start_display_row,
2623 end: end_display_row,
2624 color,
2625 }
2626 });
2627
2628 marker_quads.extend(
2629 scrollbar_layout.marker_quads_for_ranges(marker_row_ranges, 0),
2630 );
2631 }
2632
2633 for (background_highlight_id, (_, background_ranges)) in
2634 background_highlights.iter()
2635 {
2636 let is_search_highlights = *background_highlight_id
2637 == TypeId::of::<BufferSearchHighlights>();
2638 let is_symbol_occurrences = *background_highlight_id
2639 == TypeId::of::<DocumentHighlightRead>()
2640 || *background_highlight_id
2641 == TypeId::of::<DocumentHighlightWrite>();
2642 if (is_search_highlights && scrollbar_settings.search_results)
2643 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
2644 {
2645 let marker_row_ranges =
2646 background_ranges.into_iter().map(|range| {
2647 let display_start = range
2648 .start
2649 .to_display_point(&snapshot.display_snapshot);
2650 let display_end = range
2651 .end
2652 .to_display_point(&snapshot.display_snapshot);
2653 ColoredRange {
2654 start: display_start.row(),
2655 end: display_end.row(),
2656 color: theme.status().info,
2657 }
2658 });
2659 marker_quads.extend(
2660 scrollbar_layout
2661 .marker_quads_for_ranges(marker_row_ranges, 1),
2662 );
2663 }
2664 }
2665
2666 if scrollbar_settings.diagnostics {
2667 let max_point =
2668 snapshot.display_snapshot.buffer_snapshot.max_point();
2669
2670 let diagnostics = snapshot
2671 .buffer_snapshot
2672 .diagnostics_in_range::<_, Point>(
2673 Point::zero()..max_point,
2674 false,
2675 )
2676 // We want to sort by severity, in order to paint the most severe diagnostics last.
2677 .sorted_by_key(|diagnostic| {
2678 std::cmp::Reverse(diagnostic.diagnostic.severity)
2679 });
2680
2681 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
2682 let start_display = diagnostic
2683 .range
2684 .start
2685 .to_display_point(&snapshot.display_snapshot);
2686 let end_display = diagnostic
2687 .range
2688 .end
2689 .to_display_point(&snapshot.display_snapshot);
2690 let color = match diagnostic.diagnostic.severity {
2691 DiagnosticSeverity::ERROR => theme.status().error,
2692 DiagnosticSeverity::WARNING => theme.status().warning,
2693 DiagnosticSeverity::INFORMATION => theme.status().info,
2694 _ => theme.status().hint,
2695 };
2696 ColoredRange {
2697 start: start_display.row(),
2698 end: end_display.row(),
2699 color,
2700 }
2701 });
2702 marker_quads.extend(
2703 scrollbar_layout.marker_quads_for_ranges(marker_row_ranges, 2),
2704 );
2705 }
2706
2707 Arc::from(marker_quads)
2708 })
2709 .await;
2710
2711 editor.update(&mut cx, |editor, cx| {
2712 editor.scrollbar_marker_state.markers = scrollbar_markers;
2713 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
2714 editor.scrollbar_marker_state.pending_refresh = None;
2715 cx.notify();
2716 })?;
2717
2718 Ok(())
2719 }));
2720 });
2721 }
2722
2723 #[allow(clippy::too_many_arguments)]
2724 fn paint_highlighted_range(
2725 &self,
2726 range: Range<DisplayPoint>,
2727 color: Hsla,
2728 corner_radius: Pixels,
2729 line_end_overshoot: Pixels,
2730 layout: &EditorLayout,
2731 cx: &mut ElementContext,
2732 ) {
2733 let start_row = layout.visible_display_row_range.start;
2734 let end_row = layout.visible_display_row_range.end;
2735 if range.start != range.end {
2736 let row_range = if range.end.column() == 0 {
2737 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
2738 } else {
2739 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
2740 };
2741
2742 let highlighted_range = HighlightedRange {
2743 color,
2744 line_height: layout.position_map.line_height,
2745 corner_radius,
2746 start_y: layout.content_origin.y
2747 + row_range.start as f32 * layout.position_map.line_height
2748 - layout.position_map.scroll_pixel_position.y,
2749 lines: row_range
2750 .into_iter()
2751 .map(|row| {
2752 let line_layout =
2753 &layout.position_map.line_layouts[(row - start_row) as usize].line;
2754 HighlightedRangeLine {
2755 start_x: if row == range.start.row() {
2756 layout.content_origin.x
2757 + line_layout.x_for_index(range.start.column() as usize)
2758 - layout.position_map.scroll_pixel_position.x
2759 } else {
2760 layout.content_origin.x
2761 - layout.position_map.scroll_pixel_position.x
2762 },
2763 end_x: if row == range.end.row() {
2764 layout.content_origin.x
2765 + line_layout.x_for_index(range.end.column() as usize)
2766 - layout.position_map.scroll_pixel_position.x
2767 } else {
2768 layout.content_origin.x + line_layout.width + line_end_overshoot
2769 - layout.position_map.scroll_pixel_position.x
2770 },
2771 }
2772 })
2773 .collect(),
2774 };
2775
2776 highlighted_range.paint(layout.text_hitbox.bounds, cx);
2777 }
2778 }
2779
2780 fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2781 if layout.folds.is_empty() {
2782 return;
2783 }
2784
2785 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2786 let fold_corner_radius = 0.15 * layout.position_map.line_height;
2787 for mut fold in mem::take(&mut layout.folds) {
2788 fold.hover_element.paint(cx);
2789
2790 let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
2791 let fold_background = if hover_element.interactivity().active.unwrap() {
2792 cx.theme().colors().ghost_element_active
2793 } else if hover_element.interactivity().hovered.unwrap() {
2794 cx.theme().colors().ghost_element_hover
2795 } else {
2796 cx.theme().colors().ghost_element_background
2797 };
2798
2799 self.paint_highlighted_range(
2800 fold.display_range.clone(),
2801 fold_background,
2802 fold_corner_radius,
2803 fold_corner_radius * 2.,
2804 layout,
2805 cx,
2806 );
2807 }
2808 })
2809 }
2810
2811 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2812 if let Some(mut inline_blame) = layout.inline_blame.take() {
2813 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2814 inline_blame.paint(cx);
2815 })
2816 }
2817 }
2818
2819 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2820 for mut block in layout.blocks.drain(..) {
2821 block.element.paint(cx);
2822 }
2823 }
2824
2825 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2826 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
2827 mouse_context_menu.paint(cx);
2828 }
2829 }
2830
2831 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2832 cx.on_mouse_event({
2833 let position_map = layout.position_map.clone();
2834 let editor = self.editor.clone();
2835 let hitbox = layout.hitbox.clone();
2836 let mut delta = ScrollDelta::default();
2837
2838 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
2839 // accidentally turn off their scrolling.
2840 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
2841
2842 move |event: &ScrollWheelEvent, phase, cx| {
2843 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
2844 delta = delta.coalesce(event.delta);
2845 editor.update(cx, |editor, cx| {
2846 let position_map: &PositionMap = &position_map;
2847
2848 let line_height = position_map.line_height;
2849 let max_glyph_width = position_map.em_width;
2850 let (delta, axis) = match delta {
2851 gpui::ScrollDelta::Pixels(mut pixels) => {
2852 //Trackpad
2853 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2854 (pixels, axis)
2855 }
2856
2857 gpui::ScrollDelta::Lines(lines) => {
2858 //Not trackpad
2859 let pixels =
2860 point(lines.x * max_glyph_width, lines.y * line_height);
2861 (pixels, None)
2862 }
2863 };
2864
2865 let scroll_position = position_map.snapshot.scroll_position();
2866 let x = (scroll_position.x * max_glyph_width
2867 - (delta.x * scroll_sensitivity))
2868 / max_glyph_width;
2869 let y = (scroll_position.y * line_height - (delta.y * scroll_sensitivity))
2870 / line_height;
2871 let scroll_position =
2872 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2873 editor.scroll(scroll_position, axis, cx);
2874 cx.stop_propagation();
2875 });
2876 }
2877 }
2878 });
2879 }
2880
2881 fn paint_mouse_listeners(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2882 self.paint_scroll_wheel_listener(layout, cx);
2883
2884 cx.on_mouse_event({
2885 let position_map = layout.position_map.clone();
2886 let editor = self.editor.clone();
2887 let text_hitbox = layout.text_hitbox.clone();
2888 let gutter_hitbox = layout.gutter_hitbox.clone();
2889
2890 move |event: &MouseDownEvent, phase, cx| {
2891 if phase == DispatchPhase::Bubble {
2892 match event.button {
2893 MouseButton::Left => editor.update(cx, |editor, cx| {
2894 Self::mouse_left_down(
2895 editor,
2896 event,
2897 &position_map,
2898 &text_hitbox,
2899 &gutter_hitbox,
2900 cx,
2901 );
2902 }),
2903 MouseButton::Right => editor.update(cx, |editor, cx| {
2904 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
2905 }),
2906 _ => {}
2907 };
2908 }
2909 }
2910 });
2911
2912 cx.on_mouse_event({
2913 let editor = self.editor.clone();
2914 let position_map = layout.position_map.clone();
2915 let text_hitbox = layout.text_hitbox.clone();
2916
2917 move |event: &MouseUpEvent, phase, cx| {
2918 if phase == DispatchPhase::Bubble {
2919 editor.update(cx, |editor, cx| {
2920 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
2921 });
2922 }
2923 }
2924 });
2925 cx.on_mouse_event({
2926 let position_map = layout.position_map.clone();
2927 let editor = self.editor.clone();
2928 let text_hitbox = layout.text_hitbox.clone();
2929 let gutter_hitbox = layout.gutter_hitbox.clone();
2930
2931 move |event: &MouseMoveEvent, phase, cx| {
2932 if phase == DispatchPhase::Bubble {
2933 editor.update(cx, |editor, cx| {
2934 if event.pressed_button == Some(MouseButton::Left) {
2935 Self::mouse_dragged(
2936 editor,
2937 event,
2938 &position_map,
2939 text_hitbox.bounds,
2940 cx,
2941 )
2942 }
2943
2944 Self::mouse_moved(
2945 editor,
2946 event,
2947 &position_map,
2948 &text_hitbox,
2949 &gutter_hitbox,
2950 cx,
2951 )
2952 });
2953 }
2954 }
2955 });
2956 }
2957
2958 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
2959 bounds.upper_right().x - self.style.scrollbar_width
2960 }
2961
2962 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
2963 let style = &self.style;
2964 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2965 let layout = cx
2966 .text_system()
2967 .shape_line(
2968 SharedString::from(" ".repeat(column)),
2969 font_size,
2970 &[TextRun {
2971 len: column,
2972 font: style.text.font(),
2973 color: Hsla::default(),
2974 background_color: None,
2975 underline: None,
2976 strikethrough: None,
2977 }],
2978 )
2979 .unwrap();
2980
2981 layout.width
2982 }
2983
2984 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
2985 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
2986 self.column_pixels(digit_count, cx)
2987 }
2988}
2989
2990fn render_inline_blame_entry(
2991 blame: &gpui::Model<GitBlame>,
2992 blame_entry: BlameEntry,
2993 style: &EditorStyle,
2994 workspace: Option<WeakView<Workspace>>,
2995 cx: &mut ElementContext<'_>,
2996) -> AnyElement {
2997 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry, cx);
2998
2999 let author = blame_entry.author.as_deref().unwrap_or_default();
3000 let text = format!("{}, {}", author, relative_timestamp);
3001
3002 let details = blame.read(cx).details_for_entry(&blame_entry);
3003
3004 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
3005
3006 h_flex()
3007 .id("inline-blame")
3008 .w_full()
3009 .font(style.text.font().family)
3010 .text_color(cx.theme().status().hint)
3011 .line_height(style.text.line_height)
3012 .child(Icon::new(IconName::FileGit).color(Color::Hint))
3013 .child(text)
3014 .gap_2()
3015 .hoverable_tooltip(move |_| tooltip.clone().into())
3016 .into_any()
3017}
3018
3019fn blame_entry_timestamp(
3020 blame_entry: &BlameEntry,
3021 format: time_format::TimestampFormat,
3022 cx: &WindowContext,
3023) -> String {
3024 match blame_entry.author_offset_date_time() {
3025 Ok(timestamp) => time_format::format_localized_timestamp(
3026 timestamp,
3027 time::OffsetDateTime::now_utc(),
3028 cx.local_timezone(),
3029 format,
3030 ),
3031 Err(_) => "Error parsing date".to_string(),
3032 }
3033}
3034
3035fn blame_entry_relative_timestamp(blame_entry: &BlameEntry, cx: &WindowContext) -> String {
3036 blame_entry_timestamp(blame_entry, time_format::TimestampFormat::Relative, cx)
3037}
3038
3039fn blame_entry_absolute_timestamp(blame_entry: &BlameEntry, cx: &WindowContext) -> String {
3040 blame_entry_timestamp(
3041 blame_entry,
3042 time_format::TimestampFormat::MediumAbsolute,
3043 cx,
3044 )
3045}
3046
3047struct BlameEntryTooltip {
3048 blame_entry: BlameEntry,
3049 details: Option<CommitDetails>,
3050 style: EditorStyle,
3051 workspace: Option<WeakView<Workspace>>,
3052 scroll_handle: ScrollHandle,
3053}
3054
3055impl BlameEntryTooltip {
3056 fn new(
3057 blame_entry: BlameEntry,
3058 details: Option<CommitDetails>,
3059 style: &EditorStyle,
3060 workspace: Option<WeakView<Workspace>>,
3061 ) -> Self {
3062 Self {
3063 style: style.clone(),
3064 blame_entry,
3065 details,
3066 workspace,
3067 scroll_handle: ScrollHandle::new(),
3068 }
3069 }
3070}
3071
3072impl Render for BlameEntryTooltip {
3073 fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
3074 let author = self
3075 .blame_entry
3076 .author
3077 .clone()
3078 .unwrap_or("<no name>".to_string());
3079
3080 let author_email = self.blame_entry.author_mail.clone();
3081
3082 let pretty_commit_id = format!("{}", self.blame_entry.sha);
3083 let short_commit_id = pretty_commit_id.chars().take(6).collect::<String>();
3084 let absolute_timestamp = blame_entry_absolute_timestamp(&self.blame_entry, cx);
3085
3086 let message = self
3087 .details
3088 .as_ref()
3089 .map(|details| {
3090 crate::render_parsed_markdown(
3091 "blame-message",
3092 &details.parsed_message,
3093 &self.style,
3094 self.workspace.clone(),
3095 cx,
3096 )
3097 .into_any()
3098 })
3099 .unwrap_or("<no commit message>".into_any());
3100
3101 let ui_font_size = ThemeSettings::get_global(cx).ui_font_size;
3102 let message_max_height = cx.line_height() * 12 + (ui_font_size / 0.4);
3103
3104 tooltip_container(cx, move |this, cx| {
3105 this.occlude()
3106 .on_mouse_move(|_, cx| cx.stop_propagation())
3107 .child(
3108 v_flex()
3109 .w(gpui::rems(30.))
3110 .gap_4()
3111 .child(
3112 h_flex()
3113 .gap_x_2()
3114 .overflow_x_hidden()
3115 .flex_wrap()
3116 .child(author)
3117 .when_some(author_email, |this, author_email| {
3118 this.child(
3119 div()
3120 .text_color(cx.theme().colors().text_muted)
3121 .child(author_email),
3122 )
3123 })
3124 .pb_1()
3125 .border_b_1()
3126 .border_color(cx.theme().colors().border),
3127 )
3128 .child(
3129 div()
3130 .id("inline-blame-commit-message")
3131 .occlude()
3132 .child(message)
3133 .max_h(message_max_height)
3134 .overflow_y_scroll()
3135 .track_scroll(&self.scroll_handle),
3136 )
3137 .child(
3138 h_flex()
3139 .text_color(cx.theme().colors().text_muted)
3140 .w_full()
3141 .justify_between()
3142 .child(absolute_timestamp)
3143 .child(
3144 Button::new("commit-sha-button", short_commit_id.clone())
3145 .style(ButtonStyle::Transparent)
3146 .color(Color::Muted)
3147 .icon(IconName::FileGit)
3148 .icon_color(Color::Muted)
3149 .icon_position(IconPosition::Start)
3150 .disabled(
3151 self.details.as_ref().map_or(true, |details| {
3152 details.permalink.is_none()
3153 }),
3154 )
3155 .when_some(
3156 self.details
3157 .as_ref()
3158 .and_then(|details| details.permalink.clone()),
3159 |this, url| {
3160 this.on_click(move |_, cx| {
3161 cx.stop_propagation();
3162 cx.open_url(url.as_str())
3163 })
3164 },
3165 ),
3166 ),
3167 ),
3168 )
3169 })
3170 }
3171}
3172
3173fn render_blame_entry(
3174 ix: usize,
3175 blame: &gpui::Model<GitBlame>,
3176 blame_entry: BlameEntry,
3177 style: &EditorStyle,
3178 last_used_color: &mut Option<(PlayerColor, Oid)>,
3179 editor: View<Editor>,
3180 cx: &mut ElementContext<'_>,
3181) -> AnyElement {
3182 let mut sha_color = cx
3183 .theme()
3184 .players()
3185 .color_for_participant(blame_entry.sha.into());
3186 // If the last color we used is the same as the one we get for this line, but
3187 // the commit SHAs are different, then we try again to get a different color.
3188 match *last_used_color {
3189 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
3190 let index: u32 = blame_entry.sha.into();
3191 sha_color = cx.theme().players().color_for_participant(index + 1);
3192 }
3193 _ => {}
3194 };
3195 last_used_color.replace((sha_color, blame_entry.sha));
3196
3197 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry, cx);
3198
3199 let pretty_commit_id = format!("{}", blame_entry.sha);
3200 let short_commit_id = pretty_commit_id.chars().take(6).collect::<String>();
3201
3202 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
3203 let name = util::truncate_and_trailoff(author_name, 20);
3204
3205 let details = blame.read(cx).details_for_entry(&blame_entry);
3206
3207 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
3208
3209 let tooltip = cx.new_view(|_| {
3210 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
3211 });
3212
3213 h_flex()
3214 .w_full()
3215 .font(style.text.font().family)
3216 .line_height(style.text.line_height)
3217 .id(("blame", ix))
3218 .children([
3219 div()
3220 .text_color(sha_color.cursor)
3221 .child(short_commit_id)
3222 .mr_2(),
3223 div()
3224 .w_full()
3225 .h_flex()
3226 .justify_between()
3227 .text_color(cx.theme().status().hint)
3228 .child(name)
3229 .child(relative_timestamp),
3230 ])
3231 .on_mouse_down(MouseButton::Right, {
3232 let blame_entry = blame_entry.clone();
3233 move |event, cx| {
3234 deploy_blame_entry_context_menu(&blame_entry, editor.clone(), event.position, cx);
3235 }
3236 })
3237 .hover(|style| style.bg(cx.theme().colors().element_hover))
3238 .when_some(
3239 details.and_then(|details| details.permalink),
3240 |this, url| {
3241 let url = url.clone();
3242 this.cursor_pointer().on_click(move |_, cx| {
3243 cx.stop_propagation();
3244 cx.open_url(url.as_str())
3245 })
3246 },
3247 )
3248 .hoverable_tooltip(move |_| tooltip.clone().into())
3249 .into_any()
3250}
3251
3252fn deploy_blame_entry_context_menu(
3253 blame_entry: &BlameEntry,
3254 editor: View<Editor>,
3255 position: gpui::Point<Pixels>,
3256 cx: &mut WindowContext<'_>,
3257) {
3258 let context_menu = ContextMenu::build(cx, move |this, _| {
3259 let sha = format!("{}", blame_entry.sha);
3260 this.entry("Copy commit SHA", None, move |cx| {
3261 cx.write_to_clipboard(ClipboardItem::new(sha.clone()));
3262 })
3263 });
3264
3265 editor.update(cx, move |editor, cx| {
3266 editor.mouse_context_menu = Some(MouseContextMenu::new(position, context_menu, cx));
3267 cx.notify();
3268 });
3269}
3270
3271#[derive(Debug)]
3272pub(crate) struct LineWithInvisibles {
3273 pub line: ShapedLine,
3274 invisibles: Vec<Invisible>,
3275}
3276
3277impl LineWithInvisibles {
3278 fn from_chunks<'a>(
3279 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
3280 text_style: &TextStyle,
3281 max_line_len: usize,
3282 max_line_count: usize,
3283 line_number_layouts: &[Option<ShapedLine>],
3284 editor_mode: EditorMode,
3285 cx: &WindowContext,
3286 ) -> Vec<Self> {
3287 let mut layouts = Vec::with_capacity(max_line_count);
3288 let mut line = String::new();
3289 let mut invisibles = Vec::new();
3290 let mut styles = Vec::new();
3291 let mut non_whitespace_added = false;
3292 let mut row = 0;
3293 let mut line_exceeded_max_len = false;
3294 let font_size = text_style.font_size.to_pixels(cx.rem_size());
3295
3296 for highlighted_chunk in chunks.chain([HighlightedChunk {
3297 chunk: "\n",
3298 style: None,
3299 is_tab: false,
3300 }]) {
3301 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
3302 if ix > 0 {
3303 let shaped_line = cx
3304 .text_system()
3305 .shape_line(line.clone().into(), font_size, &styles)
3306 .unwrap();
3307 layouts.push(Self {
3308 line: shaped_line,
3309 invisibles: std::mem::take(&mut invisibles),
3310 });
3311
3312 line.clear();
3313 styles.clear();
3314 row += 1;
3315 line_exceeded_max_len = false;
3316 non_whitespace_added = false;
3317 if row == max_line_count {
3318 return layouts;
3319 }
3320 }
3321
3322 if !line_chunk.is_empty() && !line_exceeded_max_len {
3323 let text_style = if let Some(style) = highlighted_chunk.style {
3324 Cow::Owned(text_style.clone().highlight(style))
3325 } else {
3326 Cow::Borrowed(text_style)
3327 };
3328
3329 if line.len() + line_chunk.len() > max_line_len {
3330 let mut chunk_len = max_line_len - line.len();
3331 while !line_chunk.is_char_boundary(chunk_len) {
3332 chunk_len -= 1;
3333 }
3334 line_chunk = &line_chunk[..chunk_len];
3335 line_exceeded_max_len = true;
3336 }
3337
3338 styles.push(TextRun {
3339 len: line_chunk.len(),
3340 font: text_style.font(),
3341 color: text_style.color,
3342 background_color: text_style.background_color,
3343 underline: text_style.underline,
3344 strikethrough: text_style.strikethrough,
3345 });
3346
3347 if editor_mode == EditorMode::Full {
3348 // Line wrap pads its contents with fake whitespaces,
3349 // avoid printing them
3350 let inside_wrapped_string = line_number_layouts
3351 .get(row)
3352 .and_then(|layout| layout.as_ref())
3353 .is_none();
3354 if highlighted_chunk.is_tab {
3355 if non_whitespace_added || !inside_wrapped_string {
3356 invisibles.push(Invisible::Tab {
3357 line_start_offset: line.len(),
3358 });
3359 }
3360 } else {
3361 invisibles.extend(
3362 line_chunk
3363 .chars()
3364 .enumerate()
3365 .filter(|(_, line_char)| {
3366 let is_whitespace = line_char.is_whitespace();
3367 non_whitespace_added |= !is_whitespace;
3368 is_whitespace
3369 && (non_whitespace_added || !inside_wrapped_string)
3370 })
3371 .map(|(whitespace_index, _)| Invisible::Whitespace {
3372 line_offset: line.len() + whitespace_index,
3373 }),
3374 )
3375 }
3376 }
3377
3378 line.push_str(line_chunk);
3379 }
3380 }
3381 }
3382
3383 layouts
3384 }
3385
3386 fn draw(
3387 &self,
3388 layout: &EditorLayout,
3389 row: u32,
3390 content_origin: gpui::Point<Pixels>,
3391 whitespace_setting: ShowWhitespaceSetting,
3392 selection_ranges: &[Range<DisplayPoint>],
3393 cx: &mut ElementContext,
3394 ) {
3395 let line_height = layout.position_map.line_height;
3396 let line_y =
3397 line_height * (row as f32 - layout.position_map.scroll_pixel_position.y / line_height);
3398
3399 let line_origin =
3400 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
3401 self.line.paint(line_origin, line_height, cx).log_err();
3402
3403 self.draw_invisibles(
3404 &selection_ranges,
3405 layout,
3406 content_origin,
3407 line_y,
3408 row,
3409 line_height,
3410 whitespace_setting,
3411 cx,
3412 );
3413 }
3414
3415 #[allow(clippy::too_many_arguments)]
3416 fn draw_invisibles(
3417 &self,
3418 selection_ranges: &[Range<DisplayPoint>],
3419 layout: &EditorLayout,
3420 content_origin: gpui::Point<Pixels>,
3421 line_y: Pixels,
3422 row: u32,
3423 line_height: Pixels,
3424 whitespace_setting: ShowWhitespaceSetting,
3425 cx: &mut ElementContext,
3426 ) {
3427 let allowed_invisibles_regions = match whitespace_setting {
3428 ShowWhitespaceSetting::None => return,
3429 ShowWhitespaceSetting::Selection => Some(selection_ranges),
3430 ShowWhitespaceSetting::All => None,
3431 };
3432
3433 for invisible in &self.invisibles {
3434 let (&token_offset, invisible_symbol) = match invisible {
3435 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
3436 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
3437 };
3438
3439 let x_offset = self.line.x_for_index(token_offset);
3440 let invisible_offset =
3441 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
3442 let origin = content_origin
3443 + gpui::point(
3444 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
3445 line_y,
3446 );
3447
3448 if let Some(allowed_regions) = allowed_invisibles_regions {
3449 let invisible_point = DisplayPoint::new(row, token_offset as u32);
3450 if !allowed_regions
3451 .iter()
3452 .any(|region| region.start <= invisible_point && invisible_point < region.end)
3453 {
3454 continue;
3455 }
3456 }
3457 invisible_symbol.paint(origin, line_height, cx).log_err();
3458 }
3459 }
3460}
3461
3462#[derive(Debug, Clone, Copy, PartialEq, Eq)]
3463enum Invisible {
3464 Tab { line_start_offset: usize },
3465 Whitespace { line_offset: usize },
3466}
3467
3468impl Element for EditorElement {
3469 type BeforeLayout = ();
3470 type AfterLayout = EditorLayout;
3471
3472 fn before_layout(&mut self, cx: &mut ElementContext) -> (gpui::LayoutId, ()) {
3473 self.editor.update(cx, |editor, cx| {
3474 editor.set_style(self.style.clone(), cx);
3475
3476 let layout_id = match editor.mode {
3477 EditorMode::SingleLine => {
3478 let rem_size = cx.rem_size();
3479 let mut style = Style::default();
3480 style.size.width = relative(1.).into();
3481 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
3482 cx.with_element_context(|cx| cx.request_layout(&style, None))
3483 }
3484 EditorMode::AutoHeight { max_lines } => {
3485 let editor_handle = cx.view().clone();
3486 let max_line_number_width =
3487 self.max_line_number_width(&editor.snapshot(cx), cx);
3488 cx.with_element_context(|cx| {
3489 cx.request_measured_layout(
3490 Style::default(),
3491 move |known_dimensions, _, cx| {
3492 editor_handle
3493 .update(cx, |editor, cx| {
3494 compute_auto_height_layout(
3495 editor,
3496 max_lines,
3497 max_line_number_width,
3498 known_dimensions,
3499 cx,
3500 )
3501 })
3502 .unwrap_or_default()
3503 },
3504 )
3505 })
3506 }
3507 EditorMode::Full => {
3508 let mut style = Style::default();
3509 style.size.width = relative(1.).into();
3510 style.size.height = relative(1.).into();
3511 cx.with_element_context(|cx| cx.request_layout(&style, None))
3512 }
3513 };
3514
3515 (layout_id, ())
3516 })
3517 }
3518
3519 fn after_layout(
3520 &mut self,
3521 bounds: Bounds<Pixels>,
3522 _: &mut Self::BeforeLayout,
3523 cx: &mut ElementContext,
3524 ) -> Self::AfterLayout {
3525 let text_style = TextStyleRefinement {
3526 font_size: Some(self.style.text.font_size),
3527 line_height: Some(self.style.text.line_height),
3528 ..Default::default()
3529 };
3530 cx.with_text_style(Some(text_style), |cx| {
3531 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3532 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
3533 let style = self.style.clone();
3534
3535 let font_id = cx.text_system().resolve_font(&style.text.font());
3536 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3537 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3538 let em_width = cx
3539 .text_system()
3540 .typographic_bounds(font_id, font_size, 'm')
3541 .unwrap()
3542 .size
3543 .width;
3544 let em_advance = cx
3545 .text_system()
3546 .advance(font_id, font_size, 'm')
3547 .unwrap()
3548 .width;
3549
3550 let gutter_dimensions = snapshot.gutter_dimensions(
3551 font_id,
3552 font_size,
3553 em_width,
3554 self.max_line_number_width(&snapshot, cx),
3555 cx,
3556 );
3557 let text_width = bounds.size.width - gutter_dimensions.width;
3558 let overscroll = size(em_width, px(0.));
3559
3560 snapshot = self.editor.update(cx, |editor, cx| {
3561 editor.last_bounds = Some(bounds);
3562 editor.gutter_width = gutter_dimensions.width;
3563 editor.set_visible_line_count(bounds.size.height / line_height, cx);
3564
3565 let editor_width =
3566 text_width - gutter_dimensions.margin - overscroll.width - em_width;
3567 let wrap_width = match editor.soft_wrap_mode(cx) {
3568 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
3569 SoftWrap::EditorWidth => editor_width,
3570 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
3571 };
3572
3573 if editor.set_wrap_width(Some(wrap_width), cx) {
3574 editor.snapshot(cx)
3575 } else {
3576 snapshot
3577 }
3578 });
3579
3580 let wrap_guides = self
3581 .editor
3582 .read(cx)
3583 .wrap_guides(cx)
3584 .iter()
3585 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
3586 .collect::<SmallVec<[_; 2]>>();
3587
3588 let hitbox = cx.insert_hitbox(bounds, false);
3589 let gutter_hitbox = cx.insert_hitbox(
3590 Bounds {
3591 origin: bounds.origin,
3592 size: size(gutter_dimensions.width, bounds.size.height),
3593 },
3594 false,
3595 );
3596 let text_hitbox = cx.insert_hitbox(
3597 Bounds {
3598 origin: gutter_hitbox.upper_right(),
3599 size: size(text_width, bounds.size.height),
3600 },
3601 false,
3602 );
3603 // Offset the content_bounds from the text_bounds by the gutter margin (which
3604 // is roughly half a character wide) to make hit testing work more like how we want.
3605 let content_origin =
3606 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
3607
3608 let autoscroll_horizontally = self.editor.update(cx, |editor, cx| {
3609 let autoscroll_horizontally =
3610 editor.autoscroll_vertically(bounds, line_height, cx);
3611 snapshot = editor.snapshot(cx);
3612 autoscroll_horizontally
3613 });
3614
3615 let mut scroll_position = snapshot.scroll_position();
3616 // The scroll position is a fractional point, the whole number of which represents
3617 // the top of the window in terms of display rows.
3618 let start_row = scroll_position.y as u32;
3619 let height_in_lines = bounds.size.height / line_height;
3620 let max_row = snapshot.max_point().row();
3621
3622 // Add 1 to ensure selections bleed off screen
3623 let end_row =
3624 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
3625
3626 let buffer_rows = snapshot
3627 .buffer_rows(start_row)
3628 .take((start_row..end_row).len());
3629
3630 let start_anchor = if start_row == 0 {
3631 Anchor::min()
3632 } else {
3633 snapshot.buffer_snapshot.anchor_before(
3634 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
3635 )
3636 };
3637 let end_anchor = if end_row > max_row {
3638 Anchor::max()
3639 } else {
3640 snapshot.buffer_snapshot.anchor_before(
3641 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
3642 )
3643 };
3644
3645 let highlighted_rows = self
3646 .editor
3647 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
3648 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
3649 start_anchor..end_anchor,
3650 &snapshot.display_snapshot,
3651 cx.theme().colors(),
3652 );
3653
3654 let redacted_ranges = self.editor.read(cx).redacted_ranges(
3655 start_anchor..end_anchor,
3656 &snapshot.display_snapshot,
3657 cx,
3658 );
3659
3660 let (selections, active_rows, newest_selection_head) = self.layout_selections(
3661 start_anchor,
3662 end_anchor,
3663 &snapshot,
3664 start_row,
3665 end_row,
3666 cx,
3667 );
3668
3669 let (line_numbers, fold_statuses) = self.layout_line_numbers(
3670 start_row..end_row,
3671 buffer_rows.clone(),
3672 &active_rows,
3673 newest_selection_head,
3674 &snapshot,
3675 cx,
3676 );
3677
3678 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
3679
3680 let mut max_visible_line_width = Pixels::ZERO;
3681 let line_layouts =
3682 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
3683 for line_with_invisibles in &line_layouts {
3684 if line_with_invisibles.line.width > max_visible_line_width {
3685 max_visible_line_width = line_with_invisibles.line.width;
3686 }
3687 }
3688
3689 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
3690 .unwrap()
3691 .width;
3692 let mut scroll_width =
3693 longest_line_width.max(max_visible_line_width) + overscroll.width;
3694 let mut blocks = self.build_blocks(
3695 start_row..end_row,
3696 &snapshot,
3697 &hitbox,
3698 &text_hitbox,
3699 &mut scroll_width,
3700 &gutter_dimensions,
3701 em_width,
3702 gutter_dimensions.width + gutter_dimensions.margin,
3703 line_height,
3704 &line_layouts,
3705 cx,
3706 );
3707
3708 let scroll_pixel_position = point(
3709 scroll_position.x * em_width,
3710 scroll_position.y * line_height,
3711 );
3712
3713 let mut inline_blame = None;
3714 if let Some(newest_selection_head) = newest_selection_head {
3715 let display_row = newest_selection_head.row();
3716 if (start_row..end_row).contains(&display_row) {
3717 let line_layout = &line_layouts[(display_row - start_row) as usize];
3718 inline_blame = self.layout_inline_blame(
3719 display_row,
3720 &snapshot.display_snapshot,
3721 line_layout,
3722 em_width,
3723 content_origin,
3724 scroll_pixel_position,
3725 line_height,
3726 cx,
3727 );
3728 }
3729 }
3730
3731 let blamed_display_rows = self.layout_blame_entries(
3732 buffer_rows,
3733 em_width,
3734 scroll_position,
3735 line_height,
3736 &gutter_hitbox,
3737 gutter_dimensions.git_blame_entries_width,
3738 cx,
3739 );
3740
3741 let scroll_max = point(
3742 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
3743 max_row as f32,
3744 );
3745
3746 self.editor.update(cx, |editor, cx| {
3747 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3748
3749 let autoscrolled = if autoscroll_horizontally {
3750 editor.autoscroll_horizontally(
3751 start_row,
3752 text_hitbox.size.width,
3753 scroll_width,
3754 em_width,
3755 &line_layouts,
3756 cx,
3757 )
3758 } else {
3759 false
3760 };
3761
3762 if clamped || autoscrolled {
3763 snapshot = editor.snapshot(cx);
3764 scroll_position = snapshot.scroll_position();
3765 }
3766 });
3767
3768 cx.with_element_id(Some("blocks"), |cx| {
3769 self.layout_blocks(
3770 &mut blocks,
3771 &hitbox,
3772 line_height,
3773 scroll_pixel_position,
3774 cx,
3775 );
3776 });
3777
3778 let cursors = self.layout_cursors(
3779 &snapshot,
3780 &selections,
3781 start_row..end_row,
3782 &line_layouts,
3783 &text_hitbox,
3784 content_origin,
3785 scroll_pixel_position,
3786 line_height,
3787 em_width,
3788 cx,
3789 );
3790
3791 let scrollbar_layout = self.layout_scrollbar(
3792 &snapshot,
3793 bounds,
3794 scroll_position,
3795 line_height,
3796 height_in_lines,
3797 cx,
3798 );
3799
3800 let folds = cx.with_element_id(Some("folds"), |cx| {
3801 self.layout_folds(
3802 &snapshot,
3803 content_origin,
3804 start_anchor..end_anchor,
3805 start_row..end_row,
3806 scroll_pixel_position,
3807 line_height,
3808 &line_layouts,
3809 cx,
3810 )
3811 });
3812
3813 let gutter_settings = EditorSettings::get_global(cx).gutter;
3814
3815 let mut context_menu_visible = false;
3816 let mut code_actions_indicator = None;
3817 if let Some(newest_selection_head) = newest_selection_head {
3818 if (start_row..end_row).contains(&newest_selection_head.row()) {
3819 context_menu_visible = self.layout_context_menu(
3820 line_height,
3821 &hitbox,
3822 &text_hitbox,
3823 content_origin,
3824 start_row,
3825 scroll_pixel_position,
3826 &line_layouts,
3827 newest_selection_head,
3828 cx,
3829 );
3830 if gutter_settings.code_actions {
3831 code_actions_indicator = self.layout_code_actions_indicator(
3832 line_height,
3833 newest_selection_head,
3834 scroll_pixel_position,
3835 &gutter_dimensions,
3836 &gutter_hitbox,
3837 cx,
3838 );
3839 }
3840 }
3841 }
3842
3843 if !context_menu_visible && !cx.has_active_drag() {
3844 self.layout_hover_popovers(
3845 &snapshot,
3846 &hitbox,
3847 &text_hitbox,
3848 start_row..end_row,
3849 content_origin,
3850 scroll_pixel_position,
3851 &line_layouts,
3852 line_height,
3853 em_width,
3854 cx,
3855 );
3856 }
3857
3858 let mouse_context_menu = self.layout_mouse_context_menu(cx);
3859
3860 let fold_indicators = if gutter_settings.folds {
3861 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
3862 self.layout_gutter_fold_indicators(
3863 fold_statuses,
3864 line_height,
3865 &gutter_dimensions,
3866 gutter_settings,
3867 scroll_pixel_position,
3868 &gutter_hitbox,
3869 cx,
3870 )
3871 })
3872 } else {
3873 Vec::new()
3874 };
3875
3876 let invisible_symbol_font_size = font_size / 2.;
3877 let tab_invisible = cx
3878 .text_system()
3879 .shape_line(
3880 "→".into(),
3881 invisible_symbol_font_size,
3882 &[TextRun {
3883 len: "→".len(),
3884 font: self.style.text.font(),
3885 color: cx.theme().colors().editor_invisible,
3886 background_color: None,
3887 underline: None,
3888 strikethrough: None,
3889 }],
3890 )
3891 .unwrap();
3892 let space_invisible = cx
3893 .text_system()
3894 .shape_line(
3895 "•".into(),
3896 invisible_symbol_font_size,
3897 &[TextRun {
3898 len: "•".len(),
3899 font: self.style.text.font(),
3900 color: cx.theme().colors().editor_invisible,
3901 background_color: None,
3902 underline: None,
3903 strikethrough: None,
3904 }],
3905 )
3906 .unwrap();
3907
3908 EditorLayout {
3909 mode: snapshot.mode,
3910 position_map: Arc::new(PositionMap {
3911 size: bounds.size,
3912 scroll_pixel_position,
3913 scroll_max,
3914 line_layouts,
3915 line_height,
3916 em_width,
3917 em_advance,
3918 snapshot,
3919 }),
3920 visible_display_row_range: start_row..end_row,
3921 wrap_guides,
3922 hitbox,
3923 text_hitbox,
3924 gutter_hitbox,
3925 gutter_dimensions,
3926 content_origin,
3927 scrollbar_layout,
3928 max_row,
3929 active_rows,
3930 highlighted_rows,
3931 highlighted_ranges,
3932 redacted_ranges,
3933 line_numbers,
3934 display_hunks,
3935 blamed_display_rows,
3936 inline_blame,
3937 folds,
3938 blocks,
3939 cursors,
3940 selections,
3941 mouse_context_menu,
3942 code_actions_indicator,
3943 fold_indicators,
3944 tab_invisible,
3945 space_invisible,
3946 }
3947 })
3948 })
3949 }
3950
3951 fn paint(
3952 &mut self,
3953 bounds: Bounds<gpui::Pixels>,
3954 _: &mut Self::BeforeLayout,
3955 layout: &mut Self::AfterLayout,
3956 cx: &mut ElementContext,
3957 ) {
3958 let focus_handle = self.editor.focus_handle(cx);
3959 let key_context = self.editor.read(cx).key_context(cx);
3960 cx.set_focus_handle(&focus_handle);
3961 cx.set_key_context(key_context);
3962 cx.set_view_id(self.editor.entity_id());
3963 cx.handle_input(
3964 &focus_handle,
3965 ElementInputHandler::new(bounds, self.editor.clone()),
3966 );
3967 self.register_actions(cx);
3968 self.register_key_listeners(cx, layout);
3969
3970 let text_style = TextStyleRefinement {
3971 font_size: Some(self.style.text.font_size),
3972 line_height: Some(self.style.text.line_height),
3973 ..Default::default()
3974 };
3975 cx.with_text_style(Some(text_style), |cx| {
3976 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3977 self.paint_mouse_listeners(layout, cx);
3978
3979 self.paint_background(layout, cx);
3980 if layout.gutter_hitbox.size.width > Pixels::ZERO {
3981 self.paint_gutter(layout, cx);
3982 }
3983 self.paint_text(layout, cx);
3984
3985 if !layout.blocks.is_empty() {
3986 cx.with_element_id(Some("blocks"), |cx| {
3987 self.paint_blocks(layout, cx);
3988 });
3989 }
3990
3991 self.paint_scrollbar(layout, cx);
3992 self.paint_mouse_context_menu(layout, cx);
3993 });
3994 })
3995 }
3996}
3997
3998impl IntoElement for EditorElement {
3999 type Element = Self;
4000
4001 fn into_element(self) -> Self::Element {
4002 self
4003 }
4004}
4005
4006type BufferRow = u32;
4007
4008pub struct EditorLayout {
4009 position_map: Arc<PositionMap>,
4010 hitbox: Hitbox,
4011 text_hitbox: Hitbox,
4012 gutter_hitbox: Hitbox,
4013 gutter_dimensions: GutterDimensions,
4014 content_origin: gpui::Point<Pixels>,
4015 scrollbar_layout: Option<ScrollbarLayout>,
4016 mode: EditorMode,
4017 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
4018 visible_display_row_range: Range<u32>,
4019 active_rows: BTreeMap<u32, bool>,
4020 highlighted_rows: BTreeMap<u32, Hsla>,
4021 line_numbers: Vec<Option<ShapedLine>>,
4022 display_hunks: Vec<DisplayDiffHunk>,
4023 blamed_display_rows: Option<Vec<AnyElement>>,
4024 inline_blame: Option<AnyElement>,
4025 folds: Vec<FoldLayout>,
4026 blocks: Vec<BlockLayout>,
4027 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
4028 redacted_ranges: Vec<Range<DisplayPoint>>,
4029 cursors: Vec<CursorLayout>,
4030 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
4031 max_row: u32,
4032 code_actions_indicator: Option<AnyElement>,
4033 fold_indicators: Vec<Option<AnyElement>>,
4034 mouse_context_menu: Option<AnyElement>,
4035 tab_invisible: ShapedLine,
4036 space_invisible: ShapedLine,
4037}
4038
4039impl EditorLayout {
4040 fn line_end_overshoot(&self) -> Pixels {
4041 0.15 * self.position_map.line_height
4042 }
4043}
4044
4045struct ColoredRange<T> {
4046 start: T,
4047 end: T,
4048 color: Hsla,
4049}
4050
4051#[derive(Clone)]
4052struct ScrollbarLayout {
4053 hitbox: Hitbox,
4054 visible_row_range: Range<f32>,
4055 visible: bool,
4056 height: Pixels,
4057 scroll_height: f32,
4058 first_row_y_offset: Pixels,
4059 row_height: Pixels,
4060}
4061
4062impl ScrollbarLayout {
4063 const BORDER_WIDTH: Pixels = px(1.0);
4064 const MIN_MARKER_HEIGHT: Pixels = px(2.0);
4065
4066 fn thumb_bounds(&self) -> Bounds<Pixels> {
4067 let thumb_top = self.y_for_row(self.visible_row_range.start) - self.first_row_y_offset;
4068 let thumb_bottom = self.y_for_row(self.visible_row_range.end) + self.first_row_y_offset;
4069 Bounds::from_corners(
4070 point(self.hitbox.left(), thumb_top),
4071 point(self.hitbox.right(), thumb_bottom),
4072 )
4073 }
4074
4075 fn y_for_row(&self, row: f32) -> Pixels {
4076 self.hitbox.top() + self.first_row_y_offset + row * self.row_height
4077 }
4078
4079 fn marker_quads_for_ranges(
4080 &self,
4081 row_ranges: impl IntoIterator<Item = ColoredRange<u32>>,
4082 column: usize,
4083 ) -> Vec<PaintQuad> {
4084 let column_width =
4085 px(((self.hitbox.size.width - ScrollbarLayout::BORDER_WIDTH).0 / 3.0).floor());
4086
4087 let left_x = ScrollbarLayout::BORDER_WIDTH + (column as f32 * column_width);
4088 let right_x = left_x + column_width;
4089
4090 let mut background_pixel_ranges = row_ranges
4091 .into_iter()
4092 .map(|range| {
4093 let start_y = self.first_row_y_offset + range.start as f32 * self.row_height;
4094 let end_y = self.first_row_y_offset + (range.end + 1) as f32 * self.row_height;
4095 ColoredRange {
4096 start: start_y,
4097 end: end_y,
4098 color: range.color,
4099 }
4100 })
4101 .peekable();
4102
4103 let mut quads = Vec::new();
4104 while let Some(mut pixel_range) = background_pixel_ranges.next() {
4105 pixel_range.end = pixel_range
4106 .end
4107 .max(pixel_range.start + Self::MIN_MARKER_HEIGHT);
4108 while let Some(next_pixel_range) = background_pixel_ranges.peek() {
4109 if pixel_range.end >= next_pixel_range.start
4110 && pixel_range.color == next_pixel_range.color
4111 {
4112 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
4113 background_pixel_ranges.next();
4114 } else {
4115 break;
4116 }
4117 }
4118
4119 let bounds = Bounds::from_corners(
4120 point(left_x, pixel_range.start),
4121 point(right_x, pixel_range.end),
4122 );
4123 quads.push(quad(
4124 bounds,
4125 Corners::default(),
4126 pixel_range.color,
4127 Edges::default(),
4128 Hsla::transparent_black(),
4129 ));
4130 }
4131
4132 quads
4133 }
4134}
4135
4136struct FoldLayout {
4137 display_range: Range<DisplayPoint>,
4138 hover_element: AnyElement,
4139}
4140
4141struct PositionMap {
4142 size: Size<Pixels>,
4143 line_height: Pixels,
4144 scroll_pixel_position: gpui::Point<Pixels>,
4145 scroll_max: gpui::Point<f32>,
4146 em_width: Pixels,
4147 em_advance: Pixels,
4148 line_layouts: Vec<LineWithInvisibles>,
4149 snapshot: EditorSnapshot,
4150}
4151
4152#[derive(Debug, Copy, Clone)]
4153pub struct PointForPosition {
4154 pub previous_valid: DisplayPoint,
4155 pub next_valid: DisplayPoint,
4156 pub exact_unclipped: DisplayPoint,
4157 pub column_overshoot_after_line_end: u32,
4158}
4159
4160impl PointForPosition {
4161 pub fn as_valid(&self) -> Option<DisplayPoint> {
4162 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
4163 Some(self.previous_valid)
4164 } else {
4165 None
4166 }
4167 }
4168}
4169
4170impl PositionMap {
4171 fn point_for_position(
4172 &self,
4173 text_bounds: Bounds<Pixels>,
4174 position: gpui::Point<Pixels>,
4175 ) -> PointForPosition {
4176 let scroll_position = self.snapshot.scroll_position();
4177 let position = position - text_bounds.origin;
4178 let y = position.y.max(px(0.)).min(self.size.height);
4179 let x = position.x + (scroll_position.x * self.em_width);
4180 let row = ((y / self.line_height) + scroll_position.y) as u32;
4181
4182 let (column, x_overshoot_after_line_end) = if let Some(line) = self
4183 .line_layouts
4184 .get(row as usize - scroll_position.y as usize)
4185 .map(|LineWithInvisibles { line, .. }| line)
4186 {
4187 if let Some(ix) = line.index_for_x(x) {
4188 (ix as u32, px(0.))
4189 } else {
4190 (line.len as u32, px(0.).max(x - line.width))
4191 }
4192 } else {
4193 (0, x)
4194 };
4195
4196 let mut exact_unclipped = DisplayPoint::new(row, column);
4197 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
4198 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
4199
4200 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
4201 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
4202 PointForPosition {
4203 previous_valid,
4204 next_valid,
4205 exact_unclipped,
4206 column_overshoot_after_line_end,
4207 }
4208 }
4209}
4210
4211struct BlockLayout {
4212 row: u32,
4213 element: AnyElement,
4214 available_space: Size<AvailableSpace>,
4215 style: BlockStyle,
4216}
4217
4218fn layout_line(
4219 row: u32,
4220 snapshot: &EditorSnapshot,
4221 style: &EditorStyle,
4222 cx: &WindowContext,
4223) -> Result<ShapedLine> {
4224 let mut line = snapshot.line(row);
4225
4226 if line.len() > MAX_LINE_LEN {
4227 let mut len = MAX_LINE_LEN;
4228 while !line.is_char_boundary(len) {
4229 len -= 1;
4230 }
4231
4232 line.truncate(len);
4233 }
4234
4235 cx.text_system().shape_line(
4236 line.into(),
4237 style.text.font_size.to_pixels(cx.rem_size()),
4238 &[TextRun {
4239 len: snapshot.line_len(row) as usize,
4240 font: style.text.font(),
4241 color: Hsla::default(),
4242 background_color: None,
4243 underline: None,
4244 strikethrough: None,
4245 }],
4246 )
4247}
4248
4249pub struct CursorLayout {
4250 origin: gpui::Point<Pixels>,
4251 block_width: Pixels,
4252 line_height: Pixels,
4253 color: Hsla,
4254 shape: CursorShape,
4255 block_text: Option<ShapedLine>,
4256 cursor_name: Option<AnyElement>,
4257}
4258
4259#[derive(Debug)]
4260pub struct CursorName {
4261 string: SharedString,
4262 color: Hsla,
4263 is_top_row: bool,
4264}
4265
4266impl CursorLayout {
4267 pub fn new(
4268 origin: gpui::Point<Pixels>,
4269 block_width: Pixels,
4270 line_height: Pixels,
4271 color: Hsla,
4272 shape: CursorShape,
4273 block_text: Option<ShapedLine>,
4274 ) -> CursorLayout {
4275 CursorLayout {
4276 origin,
4277 block_width,
4278 line_height,
4279 color,
4280 shape,
4281 block_text,
4282 cursor_name: None,
4283 }
4284 }
4285
4286 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
4287 Bounds {
4288 origin: self.origin + origin,
4289 size: size(self.block_width, self.line_height),
4290 }
4291 }
4292
4293 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
4294 match self.shape {
4295 CursorShape::Bar => Bounds {
4296 origin: self.origin + origin,
4297 size: size(px(2.0), self.line_height),
4298 },
4299 CursorShape::Block | CursorShape::Hollow => Bounds {
4300 origin: self.origin + origin,
4301 size: size(self.block_width, self.line_height),
4302 },
4303 CursorShape::Underscore => Bounds {
4304 origin: self.origin
4305 + origin
4306 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
4307 size: size(self.block_width, px(2.0)),
4308 },
4309 }
4310 }
4311
4312 pub fn layout(
4313 &mut self,
4314 origin: gpui::Point<Pixels>,
4315 cursor_name: Option<CursorName>,
4316 cx: &mut ElementContext,
4317 ) {
4318 if let Some(cursor_name) = cursor_name {
4319 let bounds = self.bounds(origin);
4320 let text_size = self.line_height / 1.5;
4321
4322 let name_origin = if cursor_name.is_top_row {
4323 point(bounds.right() - px(1.), bounds.top())
4324 } else {
4325 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
4326 };
4327 let mut name_element = div()
4328 .bg(self.color)
4329 .text_size(text_size)
4330 .px_0p5()
4331 .line_height(text_size + px(2.))
4332 .text_color(cursor_name.color)
4333 .child(cursor_name.string.clone())
4334 .into_any_element();
4335
4336 name_element.layout(
4337 name_origin,
4338 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
4339 cx,
4340 );
4341
4342 self.cursor_name = Some(name_element);
4343 }
4344 }
4345
4346 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
4347 let bounds = self.bounds(origin);
4348
4349 //Draw background or border quad
4350 let cursor = if matches!(self.shape, CursorShape::Hollow) {
4351 outline(bounds, self.color)
4352 } else {
4353 fill(bounds, self.color)
4354 };
4355
4356 if let Some(name) = &mut self.cursor_name {
4357 name.paint(cx);
4358 }
4359
4360 cx.paint_quad(cursor);
4361
4362 if let Some(block_text) = &self.block_text {
4363 block_text
4364 .paint(self.origin + origin, self.line_height, cx)
4365 .log_err();
4366 }
4367 }
4368
4369 pub fn shape(&self) -> CursorShape {
4370 self.shape
4371 }
4372}
4373
4374#[derive(Debug)]
4375pub struct HighlightedRange {
4376 pub start_y: Pixels,
4377 pub line_height: Pixels,
4378 pub lines: Vec<HighlightedRangeLine>,
4379 pub color: Hsla,
4380 pub corner_radius: Pixels,
4381}
4382
4383#[derive(Debug)]
4384pub struct HighlightedRangeLine {
4385 pub start_x: Pixels,
4386 pub end_x: Pixels,
4387}
4388
4389impl HighlightedRange {
4390 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
4391 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
4392 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
4393 self.paint_lines(
4394 self.start_y + self.line_height,
4395 &self.lines[1..],
4396 bounds,
4397 cx,
4398 );
4399 } else {
4400 self.paint_lines(self.start_y, &self.lines, bounds, cx);
4401 }
4402 }
4403
4404 fn paint_lines(
4405 &self,
4406 start_y: Pixels,
4407 lines: &[HighlightedRangeLine],
4408 _bounds: Bounds<Pixels>,
4409 cx: &mut ElementContext,
4410 ) {
4411 if lines.is_empty() {
4412 return;
4413 }
4414
4415 let first_line = lines.first().unwrap();
4416 let last_line = lines.last().unwrap();
4417
4418 let first_top_left = point(first_line.start_x, start_y);
4419 let first_top_right = point(first_line.end_x, start_y);
4420
4421 let curve_height = point(Pixels::ZERO, self.corner_radius);
4422 let curve_width = |start_x: Pixels, end_x: Pixels| {
4423 let max = (end_x - start_x) / 2.;
4424 let width = if max < self.corner_radius {
4425 max
4426 } else {
4427 self.corner_radius
4428 };
4429
4430 point(width, Pixels::ZERO)
4431 };
4432
4433 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
4434 let mut path = gpui::Path::new(first_top_right - top_curve_width);
4435 path.curve_to(first_top_right + curve_height, first_top_right);
4436
4437 let mut iter = lines.iter().enumerate().peekable();
4438 while let Some((ix, line)) = iter.next() {
4439 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
4440
4441 if let Some((_, next_line)) = iter.peek() {
4442 let next_top_right = point(next_line.end_x, bottom_right.y);
4443
4444 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
4445 Ordering::Equal => {
4446 path.line_to(bottom_right);
4447 }
4448 Ordering::Less => {
4449 let curve_width = curve_width(next_top_right.x, bottom_right.x);
4450 path.line_to(bottom_right - curve_height);
4451 if self.corner_radius > Pixels::ZERO {
4452 path.curve_to(bottom_right - curve_width, bottom_right);
4453 }
4454 path.line_to(next_top_right + curve_width);
4455 if self.corner_radius > Pixels::ZERO {
4456 path.curve_to(next_top_right + curve_height, next_top_right);
4457 }
4458 }
4459 Ordering::Greater => {
4460 let curve_width = curve_width(bottom_right.x, next_top_right.x);
4461 path.line_to(bottom_right - curve_height);
4462 if self.corner_radius > Pixels::ZERO {
4463 path.curve_to(bottom_right + curve_width, bottom_right);
4464 }
4465 path.line_to(next_top_right - curve_width);
4466 if self.corner_radius > Pixels::ZERO {
4467 path.curve_to(next_top_right + curve_height, next_top_right);
4468 }
4469 }
4470 }
4471 } else {
4472 let curve_width = curve_width(line.start_x, line.end_x);
4473 path.line_to(bottom_right - curve_height);
4474 if self.corner_radius > Pixels::ZERO {
4475 path.curve_to(bottom_right - curve_width, bottom_right);
4476 }
4477
4478 let bottom_left = point(line.start_x, bottom_right.y);
4479 path.line_to(bottom_left + curve_width);
4480 if self.corner_radius > Pixels::ZERO {
4481 path.curve_to(bottom_left - curve_height, bottom_left);
4482 }
4483 }
4484 }
4485
4486 if first_line.start_x > last_line.start_x {
4487 let curve_width = curve_width(last_line.start_x, first_line.start_x);
4488 let second_top_left = point(last_line.start_x, start_y + self.line_height);
4489 path.line_to(second_top_left + curve_height);
4490 if self.corner_radius > Pixels::ZERO {
4491 path.curve_to(second_top_left + curve_width, second_top_left);
4492 }
4493 let first_bottom_left = point(first_line.start_x, second_top_left.y);
4494 path.line_to(first_bottom_left - curve_width);
4495 if self.corner_radius > Pixels::ZERO {
4496 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
4497 }
4498 }
4499
4500 path.line_to(first_top_left + curve_height);
4501 if self.corner_radius > Pixels::ZERO {
4502 path.curve_to(first_top_left + top_curve_width, first_top_left);
4503 }
4504 path.line_to(first_top_right - top_curve_width);
4505
4506 cx.paint_path(path, self.color);
4507 }
4508}
4509
4510pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
4511 (delta.pow(1.5) / 100.0).into()
4512}
4513
4514fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
4515 (delta.pow(1.2) / 300.0).into()
4516}
4517
4518#[cfg(test)]
4519mod tests {
4520 use super::*;
4521 use crate::{
4522 display_map::{BlockDisposition, BlockProperties},
4523 editor_tests::{init_test, update_test_language_settings},
4524 Editor, MultiBuffer,
4525 };
4526 use gpui::TestAppContext;
4527 use language::language_settings;
4528 use log::info;
4529 use std::num::NonZeroU32;
4530 use util::test::sample_text;
4531
4532 #[gpui::test]
4533 fn test_shape_line_numbers(cx: &mut TestAppContext) {
4534 init_test(cx, |_| {});
4535 let window = cx.add_window(|cx| {
4536 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4537 Editor::new(EditorMode::Full, buffer, None, cx)
4538 });
4539
4540 let editor = window.root(cx).unwrap();
4541 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4542 let element = EditorElement::new(&editor, style);
4543 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
4544
4545 let layouts = cx
4546 .update_window(*window, |_, cx| {
4547 cx.with_element_context(|cx| {
4548 element
4549 .layout_line_numbers(
4550 0..6,
4551 (0..6).map(Some),
4552 &Default::default(),
4553 Some(DisplayPoint::new(0, 0)),
4554 &snapshot,
4555 cx,
4556 )
4557 .0
4558 })
4559 })
4560 .unwrap();
4561 assert_eq!(layouts.len(), 6);
4562
4563 let relative_rows =
4564 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(0..6), Some(3));
4565 assert_eq!(relative_rows[&0], 3);
4566 assert_eq!(relative_rows[&1], 2);
4567 assert_eq!(relative_rows[&2], 1);
4568 // current line has no relative number
4569 assert_eq!(relative_rows[&4], 1);
4570 assert_eq!(relative_rows[&5], 2);
4571
4572 // works if cursor is before screen
4573 let relative_rows =
4574 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(3..6), Some(1));
4575 assert_eq!(relative_rows.len(), 3);
4576 assert_eq!(relative_rows[&3], 2);
4577 assert_eq!(relative_rows[&4], 3);
4578 assert_eq!(relative_rows[&5], 4);
4579
4580 // works if cursor is after screen
4581 let relative_rows =
4582 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(0..3), Some(6));
4583 assert_eq!(relative_rows.len(), 3);
4584 assert_eq!(relative_rows[&0], 5);
4585 assert_eq!(relative_rows[&1], 4);
4586 assert_eq!(relative_rows[&2], 3);
4587 }
4588
4589 #[gpui::test]
4590 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
4591 init_test(cx, |_| {});
4592
4593 let window = cx.add_window(|cx| {
4594 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
4595 Editor::new(EditorMode::Full, buffer, None, cx)
4596 });
4597 let editor = window.root(cx).unwrap();
4598 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4599 let mut element = EditorElement::new(&editor, style);
4600
4601 window
4602 .update(cx, |editor, cx| {
4603 editor.cursor_shape = CursorShape::Block;
4604 editor.change_selections(None, cx, |s| {
4605 s.select_ranges([
4606 Point::new(0, 0)..Point::new(1, 0),
4607 Point::new(3, 2)..Point::new(3, 3),
4608 Point::new(5, 6)..Point::new(6, 0),
4609 ]);
4610 });
4611 })
4612 .unwrap();
4613 let state = cx
4614 .update_window(window.into(), |_view, cx| {
4615 cx.with_element_context(|cx| {
4616 element.after_layout(
4617 Bounds {
4618 origin: point(px(500.), px(500.)),
4619 size: size(px(500.), px(500.)),
4620 },
4621 &mut (),
4622 cx,
4623 )
4624 })
4625 })
4626 .unwrap();
4627
4628 assert_eq!(state.selections.len(), 1);
4629 let local_selections = &state.selections[0].1;
4630 assert_eq!(local_selections.len(), 3);
4631 // moves cursor back one line
4632 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
4633 assert_eq!(
4634 local_selections[0].range,
4635 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
4636 );
4637
4638 // moves cursor back one column
4639 assert_eq!(
4640 local_selections[1].range,
4641 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
4642 );
4643 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
4644
4645 // leaves cursor on the max point
4646 assert_eq!(
4647 local_selections[2].range,
4648 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
4649 );
4650 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
4651
4652 // active lines does not include 1 (even though the range of the selection does)
4653 assert_eq!(
4654 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
4655 vec![0, 3, 5, 6]
4656 );
4657
4658 // multi-buffer support
4659 // in DisplayPoint coordinates, this is what we're dealing with:
4660 // 0: [[file
4661 // 1: header]]
4662 // 2: aaaaaa
4663 // 3: bbbbbb
4664 // 4: cccccc
4665 // 5:
4666 // 6: ...
4667 // 7: ffffff
4668 // 8: gggggg
4669 // 9: hhhhhh
4670 // 10:
4671 // 11: [[file
4672 // 12: header]]
4673 // 13: bbbbbb
4674 // 14: cccccc
4675 // 15: dddddd
4676 let window = cx.add_window(|cx| {
4677 let buffer = MultiBuffer::build_multi(
4678 [
4679 (
4680 &(sample_text(8, 6, 'a') + "\n"),
4681 vec![
4682 Point::new(0, 0)..Point::new(3, 0),
4683 Point::new(4, 0)..Point::new(7, 0),
4684 ],
4685 ),
4686 (
4687 &(sample_text(8, 6, 'a') + "\n"),
4688 vec![Point::new(1, 0)..Point::new(3, 0)],
4689 ),
4690 ],
4691 cx,
4692 );
4693 Editor::new(EditorMode::Full, buffer, None, cx)
4694 });
4695 let editor = window.root(cx).unwrap();
4696 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4697 let mut element = EditorElement::new(&editor, style);
4698 let _state = window.update(cx, |editor, cx| {
4699 editor.cursor_shape = CursorShape::Block;
4700 editor.change_selections(None, cx, |s| {
4701 s.select_display_ranges([
4702 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
4703 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
4704 ]);
4705 });
4706 });
4707
4708 let state = cx
4709 .update_window(window.into(), |_view, cx| {
4710 cx.with_element_context(|cx| {
4711 element.after_layout(
4712 Bounds {
4713 origin: point(px(500.), px(500.)),
4714 size: size(px(500.), px(500.)),
4715 },
4716 &mut (),
4717 cx,
4718 )
4719 })
4720 })
4721 .unwrap();
4722 assert_eq!(state.selections.len(), 1);
4723 let local_selections = &state.selections[0].1;
4724 assert_eq!(local_selections.len(), 2);
4725
4726 // moves cursor on excerpt boundary back a line
4727 // and doesn't allow selection to bleed through
4728 assert_eq!(
4729 local_selections[0].range,
4730 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
4731 );
4732 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
4733 // moves cursor on buffer boundary back two lines
4734 // and doesn't allow selection to bleed through
4735 assert_eq!(
4736 local_selections[1].range,
4737 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
4738 );
4739 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
4740 }
4741
4742 #[gpui::test]
4743 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
4744 init_test(cx, |_| {});
4745
4746 let window = cx.add_window(|cx| {
4747 let buffer = MultiBuffer::build_simple("", cx);
4748 Editor::new(EditorMode::Full, buffer, None, cx)
4749 });
4750 let editor = window.root(cx).unwrap();
4751 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4752 window
4753 .update(cx, |editor, cx| {
4754 editor.set_placeholder_text("hello", cx);
4755 editor.insert_blocks(
4756 [BlockProperties {
4757 style: BlockStyle::Fixed,
4758 disposition: BlockDisposition::Above,
4759 height: 3,
4760 position: Anchor::min(),
4761 render: Box::new(|_| div().into_any()),
4762 }],
4763 None,
4764 cx,
4765 );
4766
4767 // Blur the editor so that it displays placeholder text.
4768 cx.blur();
4769 })
4770 .unwrap();
4771
4772 let mut element = EditorElement::new(&editor, style);
4773 let state = cx
4774 .update_window(window.into(), |_view, cx| {
4775 cx.with_element_context(|cx| {
4776 element.after_layout(
4777 Bounds {
4778 origin: point(px(500.), px(500.)),
4779 size: size(px(500.), px(500.)),
4780 },
4781 &mut (),
4782 cx,
4783 )
4784 })
4785 })
4786 .unwrap();
4787
4788 assert_eq!(state.position_map.line_layouts.len(), 4);
4789 assert_eq!(
4790 state
4791 .line_numbers
4792 .iter()
4793 .map(Option::is_some)
4794 .collect::<Vec<_>>(),
4795 &[false, false, false, true]
4796 );
4797 }
4798
4799 #[gpui::test]
4800 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
4801 const TAB_SIZE: u32 = 4;
4802
4803 let input_text = "\t \t|\t| a b";
4804 let expected_invisibles = vec![
4805 Invisible::Tab {
4806 line_start_offset: 0,
4807 },
4808 Invisible::Whitespace {
4809 line_offset: TAB_SIZE as usize,
4810 },
4811 Invisible::Tab {
4812 line_start_offset: TAB_SIZE as usize + 1,
4813 },
4814 Invisible::Tab {
4815 line_start_offset: TAB_SIZE as usize * 2 + 1,
4816 },
4817 Invisible::Whitespace {
4818 line_offset: TAB_SIZE as usize * 3 + 1,
4819 },
4820 Invisible::Whitespace {
4821 line_offset: TAB_SIZE as usize * 3 + 3,
4822 },
4823 ];
4824 assert_eq!(
4825 expected_invisibles.len(),
4826 input_text
4827 .chars()
4828 .filter(|initial_char| initial_char.is_whitespace())
4829 .count(),
4830 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4831 );
4832
4833 init_test(cx, |s| {
4834 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4835 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
4836 });
4837
4838 let actual_invisibles =
4839 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
4840
4841 assert_eq!(expected_invisibles, actual_invisibles);
4842 }
4843
4844 #[gpui::test]
4845 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
4846 init_test(cx, |s| {
4847 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4848 s.defaults.tab_size = NonZeroU32::new(4);
4849 });
4850
4851 for editor_mode_without_invisibles in [
4852 EditorMode::SingleLine,
4853 EditorMode::AutoHeight { max_lines: 100 },
4854 ] {
4855 let invisibles = collect_invisibles_from_new_editor(
4856 cx,
4857 editor_mode_without_invisibles,
4858 "\t\t\t| | a b",
4859 px(500.0),
4860 );
4861 assert!(invisibles.is_empty(),
4862 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4863 }
4864 }
4865
4866 #[gpui::test]
4867 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4868 let tab_size = 4;
4869 let input_text = "a\tbcd ".repeat(9);
4870 let repeated_invisibles = [
4871 Invisible::Tab {
4872 line_start_offset: 1,
4873 },
4874 Invisible::Whitespace {
4875 line_offset: tab_size as usize + 3,
4876 },
4877 Invisible::Whitespace {
4878 line_offset: tab_size as usize + 4,
4879 },
4880 Invisible::Whitespace {
4881 line_offset: tab_size as usize + 5,
4882 },
4883 ];
4884 let expected_invisibles = std::iter::once(repeated_invisibles)
4885 .cycle()
4886 .take(9)
4887 .flatten()
4888 .collect::<Vec<_>>();
4889 assert_eq!(
4890 expected_invisibles.len(),
4891 input_text
4892 .chars()
4893 .filter(|initial_char| initial_char.is_whitespace())
4894 .count(),
4895 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4896 );
4897 info!("Expected invisibles: {expected_invisibles:?}");
4898
4899 init_test(cx, |_| {});
4900
4901 // Put the same string with repeating whitespace pattern into editors of various size,
4902 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4903 let resize_step = 10.0;
4904 let mut editor_width = 200.0;
4905 while editor_width <= 1000.0 {
4906 update_test_language_settings(cx, |s| {
4907 s.defaults.tab_size = NonZeroU32::new(tab_size);
4908 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4909 s.defaults.preferred_line_length = Some(editor_width as u32);
4910 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4911 });
4912
4913 let actual_invisibles = collect_invisibles_from_new_editor(
4914 cx,
4915 EditorMode::Full,
4916 &input_text,
4917 px(editor_width),
4918 );
4919
4920 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4921 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4922 let mut i = 0;
4923 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4924 i = actual_index;
4925 match expected_invisibles.get(i) {
4926 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4927 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4928 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4929 _ => {
4930 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4931 }
4932 },
4933 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4934 }
4935 }
4936 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4937 assert!(
4938 missing_expected_invisibles.is_empty(),
4939 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4940 );
4941
4942 editor_width += resize_step;
4943 }
4944 }
4945
4946 fn collect_invisibles_from_new_editor(
4947 cx: &mut TestAppContext,
4948 editor_mode: EditorMode,
4949 input_text: &str,
4950 editor_width: Pixels,
4951 ) -> Vec<Invisible> {
4952 info!(
4953 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4954 editor_width.0
4955 );
4956 let window = cx.add_window(|cx| {
4957 let buffer = MultiBuffer::build_simple(&input_text, cx);
4958 Editor::new(editor_mode, buffer, None, cx)
4959 });
4960 let editor = window.root(cx).unwrap();
4961 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4962 let mut element = EditorElement::new(&editor, style);
4963 window
4964 .update(cx, |editor, cx| {
4965 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4966 editor.set_wrap_width(Some(editor_width), cx);
4967 })
4968 .unwrap();
4969 let layout_state = cx
4970 .update_window(window.into(), |_, cx| {
4971 cx.with_element_context(|cx| {
4972 element.after_layout(
4973 Bounds {
4974 origin: point(px(500.), px(500.)),
4975 size: size(px(500.), px(500.)),
4976 },
4977 &mut (),
4978 cx,
4979 )
4980 })
4981 })
4982 .unwrap();
4983
4984 layout_state
4985 .position_map
4986 .line_layouts
4987 .iter()
4988 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
4989 .cloned()
4990 .collect()
4991 }
4992}
4993
4994pub fn register_action<T: Action>(
4995 view: &View<Editor>,
4996 cx: &mut WindowContext,
4997 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4998) {
4999 let view = view.clone();
5000 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
5001 let action = action.downcast_ref().unwrap();
5002 if phase == DispatchPhase::Bubble {
5003 view.update(cx, |editor, cx| {
5004 listener(editor, action, cx);
5005 })
5006 }
5007 })
5008}
5009
5010fn compute_auto_height_layout(
5011 editor: &mut Editor,
5012 max_lines: usize,
5013 max_line_number_width: Pixels,
5014 known_dimensions: Size<Option<Pixels>>,
5015 cx: &mut ViewContext<Editor>,
5016) -> Option<Size<Pixels>> {
5017 let width = known_dimensions.width?;
5018 if let Some(height) = known_dimensions.height {
5019 return Some(size(width, height));
5020 }
5021
5022 let style = editor.style.as_ref().unwrap();
5023 let font_id = cx.text_system().resolve_font(&style.text.font());
5024 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5025 let line_height = style.text.line_height_in_pixels(cx.rem_size());
5026 let em_width = cx
5027 .text_system()
5028 .typographic_bounds(font_id, font_size, 'm')
5029 .unwrap()
5030 .size
5031 .width;
5032
5033 let mut snapshot = editor.snapshot(cx);
5034 let gutter_dimensions =
5035 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
5036
5037 editor.gutter_width = gutter_dimensions.width;
5038 let text_width = width - gutter_dimensions.width;
5039 let overscroll = size(em_width, px(0.));
5040
5041 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
5042 if editor.set_wrap_width(Some(editor_width), cx) {
5043 snapshot = editor.snapshot(cx);
5044 }
5045
5046 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
5047 let height = scroll_height
5048 .max(line_height)
5049 .min(line_height * max_lines as f32);
5050
5051 Some(size(width, height))
5052}