1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::{DoubleClickInMultibuffer, MultiCursorModifier, ShowScrollbar},
7 git::{blame::GitBlame, diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::{
9 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
10 },
11 items::BufferSearchHighlights,
12 mouse_context_menu::{self, MouseContextMenu},
13 scroll::scroll_amount::ScrollAmount,
14 CursorShape, DisplayPoint, DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode,
15 EditorSettings, EditorSnapshot, EditorStyle, GutterDimensions, HalfPageDown, HalfPageUp,
16 HoveredCursor, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, SelectPhase, Selection,
17 SoftWrap, ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
18};
19use anyhow::Result;
20use collections::{BTreeMap, HashMap};
21use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
22use gpui::{
23 anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
24 transparent_black, Action, AnchorCorner, AnyElement, AnyView, AvailableSpace, Bounds,
25 ClipboardItem, ContentMask, Corners, CursorStyle, DispatchPhase, Edges, Element,
26 ElementContext, ElementInputHandler, Entity, Hitbox, Hsla, InteractiveElement, IntoElement,
27 ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent,
28 ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size, Stateful,
29 StatefulInteractiveElement, Style, Styled, TextRun, TextStyle, TextStyleRefinement, View,
30 ViewContext, WindowContext,
31};
32use itertools::Itertools;
33use language::language_settings::ShowWhitespaceSetting;
34use lsp::DiagnosticSeverity;
35use multi_buffer::Anchor;
36use project::{
37 project_settings::{GitGutterSetting, ProjectSettings},
38 ProjectPath,
39};
40use settings::Settings;
41use smallvec::SmallVec;
42use std::{
43 any::TypeId,
44 borrow::Cow,
45 cmp::{self, Ordering},
46 fmt::Write,
47 iter, mem,
48 ops::Range,
49 sync::Arc,
50};
51use sum_tree::Bias;
52use theme::{ActiveTheme, PlayerColor};
53use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
54use ui::{prelude::*, tooltip_container};
55use util::ResultExt;
56use workspace::item::Item;
57
58struct SelectionLayout {
59 head: DisplayPoint,
60 cursor_shape: CursorShape,
61 is_newest: bool,
62 is_local: bool,
63 range: Range<DisplayPoint>,
64 active_rows: Range<u32>,
65 user_name: Option<SharedString>,
66}
67
68impl SelectionLayout {
69 fn new<T: ToPoint + ToDisplayPoint + Clone>(
70 selection: Selection<T>,
71 line_mode: bool,
72 cursor_shape: CursorShape,
73 map: &DisplaySnapshot,
74 is_newest: bool,
75 is_local: bool,
76 user_name: Option<SharedString>,
77 ) -> Self {
78 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
79 let display_selection = point_selection.map(|p| p.to_display_point(map));
80 let mut range = display_selection.range();
81 let mut head = display_selection.head();
82 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
83 ..map.next_line_boundary(point_selection.end).1.row();
84
85 // vim visual line mode
86 if line_mode {
87 let point_range = map.expand_to_line(point_selection.range());
88 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
89 }
90
91 // any vim visual mode (including line mode)
92 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
93 if head.column() > 0 {
94 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
95 } else if head.row() > 0 && head != map.max_point() {
96 head = map.clip_point(
97 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
98 Bias::Left,
99 );
100 // updating range.end is a no-op unless you're cursor is
101 // on the newline containing a multi-buffer divider
102 // in which case the clip_point may have moved the head up
103 // an additional row.
104 range.end = DisplayPoint::new(head.row() + 1, 0);
105 active_rows.end = head.row();
106 }
107 }
108
109 Self {
110 head,
111 cursor_shape,
112 is_newest,
113 is_local,
114 range,
115 active_rows,
116 user_name,
117 }
118 }
119}
120
121pub struct EditorElement {
122 editor: View<Editor>,
123 style: EditorStyle,
124}
125
126impl EditorElement {
127 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
128 Self {
129 editor: editor.clone(),
130 style,
131 }
132 }
133
134 fn register_actions(&self, cx: &mut WindowContext) {
135 let view = &self.editor;
136 view.update(cx, |editor, cx| {
137 for action in editor.editor_actions.iter() {
138 (action)(cx)
139 }
140 });
141
142 crate::rust_analyzer_ext::apply_related_actions(view, cx);
143 register_action(view, cx, Editor::move_left);
144 register_action(view, cx, Editor::move_right);
145 register_action(view, cx, Editor::move_down);
146 register_action(view, cx, Editor::move_down_by_lines);
147 register_action(view, cx, Editor::select_down_by_lines);
148 register_action(view, cx, Editor::move_up);
149 register_action(view, cx, Editor::move_up_by_lines);
150 register_action(view, cx, Editor::select_up_by_lines);
151 register_action(view, cx, Editor::cancel);
152 register_action(view, cx, Editor::newline);
153 register_action(view, cx, Editor::newline_above);
154 register_action(view, cx, Editor::newline_below);
155 register_action(view, cx, Editor::backspace);
156 register_action(view, cx, Editor::delete);
157 register_action(view, cx, Editor::tab);
158 register_action(view, cx, Editor::tab_prev);
159 register_action(view, cx, Editor::indent);
160 register_action(view, cx, Editor::outdent);
161 register_action(view, cx, Editor::delete_line);
162 register_action(view, cx, Editor::join_lines);
163 register_action(view, cx, Editor::sort_lines_case_sensitive);
164 register_action(view, cx, Editor::sort_lines_case_insensitive);
165 register_action(view, cx, Editor::reverse_lines);
166 register_action(view, cx, Editor::shuffle_lines);
167 register_action(view, cx, Editor::convert_to_upper_case);
168 register_action(view, cx, Editor::convert_to_lower_case);
169 register_action(view, cx, Editor::convert_to_title_case);
170 register_action(view, cx, Editor::convert_to_snake_case);
171 register_action(view, cx, Editor::convert_to_kebab_case);
172 register_action(view, cx, Editor::convert_to_upper_camel_case);
173 register_action(view, cx, Editor::convert_to_lower_camel_case);
174 register_action(view, cx, Editor::delete_to_previous_word_start);
175 register_action(view, cx, Editor::delete_to_previous_subword_start);
176 register_action(view, cx, Editor::delete_to_next_word_end);
177 register_action(view, cx, Editor::delete_to_next_subword_end);
178 register_action(view, cx, Editor::delete_to_beginning_of_line);
179 register_action(view, cx, Editor::delete_to_end_of_line);
180 register_action(view, cx, Editor::cut_to_end_of_line);
181 register_action(view, cx, Editor::duplicate_line_up);
182 register_action(view, cx, Editor::duplicate_line_down);
183 register_action(view, cx, Editor::move_line_up);
184 register_action(view, cx, Editor::move_line_down);
185 register_action(view, cx, Editor::transpose);
186 register_action(view, cx, Editor::cut);
187 register_action(view, cx, Editor::copy);
188 register_action(view, cx, Editor::paste);
189 register_action(view, cx, Editor::undo);
190 register_action(view, cx, Editor::redo);
191 register_action(view, cx, Editor::move_page_up);
192 register_action(view, cx, Editor::move_page_down);
193 register_action(view, cx, Editor::next_screen);
194 register_action(view, cx, Editor::scroll_cursor_top);
195 register_action(view, cx, Editor::scroll_cursor_center);
196 register_action(view, cx, Editor::scroll_cursor_bottom);
197 register_action(view, cx, |editor, _: &LineDown, cx| {
198 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
199 });
200 register_action(view, cx, |editor, _: &LineUp, cx| {
201 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
202 });
203 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
204 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
205 });
206 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
207 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
208 });
209 register_action(view, cx, |editor, _: &PageDown, cx| {
210 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
211 });
212 register_action(view, cx, |editor, _: &PageUp, cx| {
213 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
214 });
215 register_action(view, cx, Editor::move_to_previous_word_start);
216 register_action(view, cx, Editor::move_to_previous_subword_start);
217 register_action(view, cx, Editor::move_to_next_word_end);
218 register_action(view, cx, Editor::move_to_next_subword_end);
219 register_action(view, cx, Editor::move_to_beginning_of_line);
220 register_action(view, cx, Editor::move_to_end_of_line);
221 register_action(view, cx, Editor::move_to_start_of_paragraph);
222 register_action(view, cx, Editor::move_to_end_of_paragraph);
223 register_action(view, cx, Editor::move_to_beginning);
224 register_action(view, cx, Editor::move_to_end);
225 register_action(view, cx, Editor::select_up);
226 register_action(view, cx, Editor::select_down);
227 register_action(view, cx, Editor::select_left);
228 register_action(view, cx, Editor::select_right);
229 register_action(view, cx, Editor::select_to_previous_word_start);
230 register_action(view, cx, Editor::select_to_previous_subword_start);
231 register_action(view, cx, Editor::select_to_next_word_end);
232 register_action(view, cx, Editor::select_to_next_subword_end);
233 register_action(view, cx, Editor::select_to_beginning_of_line);
234 register_action(view, cx, Editor::select_to_end_of_line);
235 register_action(view, cx, Editor::select_to_start_of_paragraph);
236 register_action(view, cx, Editor::select_to_end_of_paragraph);
237 register_action(view, cx, Editor::select_to_beginning);
238 register_action(view, cx, Editor::select_to_end);
239 register_action(view, cx, Editor::select_all);
240 register_action(view, cx, |editor, action, cx| {
241 editor.select_all_matches(action, cx).log_err();
242 });
243 register_action(view, cx, Editor::select_line);
244 register_action(view, cx, Editor::split_selection_into_lines);
245 register_action(view, cx, Editor::add_selection_above);
246 register_action(view, cx, Editor::add_selection_below);
247 register_action(view, cx, |editor, action, cx| {
248 editor.select_next(action, cx).log_err();
249 });
250 register_action(view, cx, |editor, action, cx| {
251 editor.select_previous(action, cx).log_err();
252 });
253 register_action(view, cx, Editor::toggle_comments);
254 register_action(view, cx, Editor::select_larger_syntax_node);
255 register_action(view, cx, Editor::select_smaller_syntax_node);
256 register_action(view, cx, Editor::move_to_enclosing_bracket);
257 register_action(view, cx, Editor::undo_selection);
258 register_action(view, cx, Editor::redo_selection);
259 register_action(view, cx, Editor::go_to_diagnostic);
260 register_action(view, cx, Editor::go_to_prev_diagnostic);
261 register_action(view, cx, Editor::go_to_hunk);
262 register_action(view, cx, Editor::go_to_prev_hunk);
263 register_action(view, cx, |editor, a, cx| {
264 editor.go_to_definition(a, cx).detach_and_log_err(cx);
265 });
266 register_action(view, cx, |editor, a, cx| {
267 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
268 });
269 register_action(view, cx, |editor, a, cx| {
270 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
271 });
272 register_action(view, cx, |editor, a, cx| {
273 editor
274 .go_to_implementation_split(a, cx)
275 .detach_and_log_err(cx);
276 });
277 register_action(view, cx, |editor, a, cx| {
278 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
279 });
280 register_action(view, cx, |editor, a, cx| {
281 editor
282 .go_to_type_definition_split(a, cx)
283 .detach_and_log_err(cx);
284 });
285 register_action(view, cx, Editor::open_url);
286 register_action(view, cx, Editor::fold);
287 register_action(view, cx, Editor::fold_at);
288 register_action(view, cx, Editor::unfold_lines);
289 register_action(view, cx, Editor::unfold_at);
290 register_action(view, cx, Editor::fold_selected_ranges);
291 register_action(view, cx, Editor::show_completions);
292 register_action(view, cx, Editor::toggle_code_actions);
293 register_action(view, cx, Editor::open_excerpts);
294 register_action(view, cx, Editor::open_excerpts_in_split);
295 register_action(view, cx, Editor::toggle_soft_wrap);
296 register_action(view, cx, Editor::toggle_line_numbers);
297 register_action(view, cx, Editor::toggle_inlay_hints);
298 register_action(view, cx, hover_popover::hover);
299 register_action(view, cx, Editor::reveal_in_finder);
300 register_action(view, cx, Editor::copy_path);
301 register_action(view, cx, Editor::copy_relative_path);
302 register_action(view, cx, Editor::copy_highlight_json);
303 register_action(view, cx, Editor::copy_permalink_to_line);
304 register_action(view, cx, Editor::open_permalink_to_line);
305 register_action(view, cx, Editor::toggle_git_blame);
306 register_action(view, cx, |editor, action, cx| {
307 if let Some(task) = editor.format(action, cx) {
308 task.detach_and_log_err(cx);
309 } else {
310 cx.propagate();
311 }
312 });
313 register_action(view, cx, Editor::restart_language_server);
314 register_action(view, cx, Editor::show_character_palette);
315 register_action(view, cx, |editor, action, cx| {
316 if let Some(task) = editor.confirm_completion(action, cx) {
317 task.detach_and_log_err(cx);
318 } else {
319 cx.propagate();
320 }
321 });
322 register_action(view, cx, |editor, action, cx| {
323 if let Some(task) = editor.confirm_code_action(action, cx) {
324 task.detach_and_log_err(cx);
325 } else {
326 cx.propagate();
327 }
328 });
329 register_action(view, cx, |editor, action, cx| {
330 if let Some(task) = editor.rename(action, cx) {
331 task.detach_and_log_err(cx);
332 } else {
333 cx.propagate();
334 }
335 });
336 register_action(view, cx, |editor, action, cx| {
337 if let Some(task) = editor.confirm_rename(action, cx) {
338 task.detach_and_log_err(cx);
339 } else {
340 cx.propagate();
341 }
342 });
343 register_action(view, cx, |editor, action, cx| {
344 if let Some(task) = editor.find_all_references(action, cx) {
345 task.detach_and_log_err(cx);
346 } else {
347 cx.propagate();
348 }
349 });
350 register_action(view, cx, Editor::next_inline_completion);
351 register_action(view, cx, Editor::previous_inline_completion);
352 register_action(view, cx, Editor::show_inline_completion);
353 register_action(view, cx, Editor::context_menu_first);
354 register_action(view, cx, Editor::context_menu_prev);
355 register_action(view, cx, Editor::context_menu_next);
356 register_action(view, cx, Editor::context_menu_last);
357 register_action(view, cx, Editor::display_cursor_names);
358 register_action(view, cx, Editor::unique_lines_case_insensitive);
359 register_action(view, cx, Editor::unique_lines_case_sensitive);
360 register_action(view, cx, Editor::accept_partial_inline_completion);
361 register_action(view, cx, Editor::revert_selected_hunks);
362 }
363
364 fn register_key_listeners(&self, cx: &mut ElementContext, layout: &EditorLayout) {
365 let position_map = layout.position_map.clone();
366 cx.on_key_event({
367 let editor = self.editor.clone();
368 let text_hitbox = layout.text_hitbox.clone();
369 move |event: &ModifiersChangedEvent, phase, cx| {
370 if phase != DispatchPhase::Bubble {
371 return;
372 }
373
374 editor.update(cx, |editor, cx| {
375 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
376 })
377 }
378 });
379 }
380
381 fn modifiers_changed(
382 editor: &mut Editor,
383 event: &ModifiersChangedEvent,
384 position_map: &PositionMap,
385 text_hitbox: &Hitbox,
386 cx: &mut ViewContext<Editor>,
387 ) {
388 let mouse_position = cx.mouse_position();
389 if !text_hitbox.is_hovered(cx) {
390 return;
391 }
392
393 editor.update_hovered_link(
394 position_map.point_for_position(text_hitbox.bounds, mouse_position),
395 &position_map.snapshot,
396 event.modifiers,
397 cx,
398 )
399 }
400
401 fn mouse_left_down(
402 editor: &mut Editor,
403 event: &MouseDownEvent,
404 position_map: &PositionMap,
405 text_hitbox: &Hitbox,
406 gutter_hitbox: &Hitbox,
407 cx: &mut ViewContext<Editor>,
408 ) {
409 if cx.default_prevented() {
410 return;
411 }
412
413 let mut click_count = event.click_count;
414 let mut modifiers = event.modifiers;
415
416 if gutter_hitbox.is_hovered(cx) {
417 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
418 } else if !text_hitbox.is_hovered(cx) {
419 return;
420 }
421
422 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
423 match EditorSettings::get_global(cx).double_click_in_multibuffer {
424 DoubleClickInMultibuffer::Select => {
425 // do nothing special on double click, all selection logic is below
426 }
427 DoubleClickInMultibuffer::Open => {
428 if modifiers.alt {
429 // if double click is made with alt, pretend it's a regular double click without opening and alt,
430 // and run the selection logic.
431 modifiers.alt = false;
432 } else {
433 // if double click is made without alt, open the corresponding excerp
434 editor.open_excerpts(&OpenExcerpts, cx);
435 return;
436 }
437 }
438 }
439 }
440
441 let point_for_position =
442 position_map.point_for_position(text_hitbox.bounds, event.position);
443 let position = point_for_position.previous_valid;
444 if modifiers.shift && modifiers.alt {
445 editor.select(
446 SelectPhase::BeginColumnar {
447 position,
448 goal_column: point_for_position.exact_unclipped.column(),
449 },
450 cx,
451 );
452 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
453 editor.select(
454 SelectPhase::Extend {
455 position,
456 click_count,
457 },
458 cx,
459 );
460 } else {
461 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
462 let multi_cursor_modifier = match multi_cursor_setting {
463 MultiCursorModifier::Alt => modifiers.alt,
464 MultiCursorModifier::Cmd => modifiers.command,
465 };
466 editor.select(
467 SelectPhase::Begin {
468 position,
469 add: multi_cursor_modifier,
470 click_count,
471 },
472 cx,
473 );
474 }
475
476 cx.stop_propagation();
477 }
478
479 fn mouse_right_down(
480 editor: &mut Editor,
481 event: &MouseDownEvent,
482 position_map: &PositionMap,
483 text_hitbox: &Hitbox,
484 cx: &mut ViewContext<Editor>,
485 ) {
486 if !text_hitbox.is_hovered(cx) {
487 return;
488 }
489 let point_for_position =
490 position_map.point_for_position(text_hitbox.bounds, event.position);
491 mouse_context_menu::deploy_context_menu(
492 editor,
493 event.position,
494 point_for_position.previous_valid,
495 cx,
496 );
497 cx.stop_propagation();
498 }
499
500 fn mouse_up(
501 editor: &mut Editor,
502 event: &MouseUpEvent,
503 position_map: &PositionMap,
504 text_hitbox: &Hitbox,
505 cx: &mut ViewContext<Editor>,
506 ) {
507 let end_selection = editor.has_pending_selection();
508 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
509
510 if end_selection {
511 editor.select(SelectPhase::End, cx);
512 }
513
514 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
515 let multi_cursor_modifier = match multi_cursor_setting {
516 MultiCursorModifier::Alt => event.modifiers.command,
517 MultiCursorModifier::Cmd => event.modifiers.alt,
518 };
519
520 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
521 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
522 editor.handle_click_hovered_link(point, event.modifiers, cx);
523
524 cx.stop_propagation();
525 } else if end_selection {
526 cx.stop_propagation();
527 }
528 }
529
530 fn mouse_dragged(
531 editor: &mut Editor,
532 event: &MouseMoveEvent,
533 position_map: &PositionMap,
534 text_bounds: Bounds<Pixels>,
535 cx: &mut ViewContext<Editor>,
536 ) {
537 if !editor.has_pending_selection() {
538 return;
539 }
540
541 let point_for_position = position_map.point_for_position(text_bounds, event.position);
542 let mut scroll_delta = gpui::Point::<f32>::default();
543 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
544 let top = text_bounds.origin.y + vertical_margin;
545 let bottom = text_bounds.lower_left().y - vertical_margin;
546 if event.position.y < top {
547 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
548 }
549 if event.position.y > bottom {
550 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
551 }
552
553 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
554 let left = text_bounds.origin.x + horizontal_margin;
555 let right = text_bounds.upper_right().x - horizontal_margin;
556 if event.position.x < left {
557 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
558 }
559 if event.position.x > right {
560 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
561 }
562
563 editor.select(
564 SelectPhase::Update {
565 position: point_for_position.previous_valid,
566 goal_column: point_for_position.exact_unclipped.column(),
567 scroll_delta,
568 },
569 cx,
570 );
571 }
572
573 fn mouse_moved(
574 editor: &mut Editor,
575 event: &MouseMoveEvent,
576 position_map: &PositionMap,
577 text_hitbox: &Hitbox,
578 gutter_hitbox: &Hitbox,
579 cx: &mut ViewContext<Editor>,
580 ) {
581 let modifiers = event.modifiers;
582 let gutter_hovered = gutter_hitbox.is_hovered(cx);
583 editor.set_gutter_hovered(gutter_hovered, cx);
584
585 // Don't trigger hover popover if mouse is hovering over context menu
586 if text_hitbox.is_hovered(cx) {
587 let point_for_position =
588 position_map.point_for_position(text_hitbox.bounds, event.position);
589
590 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
591
592 if let Some(point) = point_for_position.as_valid() {
593 hover_at(editor, Some(point), cx);
594 Self::update_visible_cursor(editor, point, position_map, cx);
595 } else {
596 hover_at(editor, None, cx);
597 }
598 } else {
599 editor.hide_hovered_link(cx);
600 hover_at(editor, None, cx);
601 if gutter_hovered {
602 cx.stop_propagation();
603 }
604 }
605 }
606
607 fn update_visible_cursor(
608 editor: &mut Editor,
609 point: DisplayPoint,
610 position_map: &PositionMap,
611 cx: &mut ViewContext<Editor>,
612 ) {
613 let snapshot = &position_map.snapshot;
614 let Some(hub) = editor.collaboration_hub() else {
615 return;
616 };
617 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
618 ..DisplayPoint::new(
619 point.row(),
620 (point.column() + 1).min(snapshot.line_len(point.row())),
621 );
622
623 let range = snapshot
624 .buffer_snapshot
625 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
626 ..snapshot
627 .buffer_snapshot
628 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
629
630 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
631 return;
632 };
633 let key = crate::HoveredCursor {
634 replica_id: selection.replica_id,
635 selection_id: selection.selection.id,
636 };
637 editor.hovered_cursors.insert(
638 key.clone(),
639 cx.spawn(|editor, mut cx| async move {
640 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
641 editor
642 .update(&mut cx, |editor, cx| {
643 editor.hovered_cursors.remove(&key);
644 cx.notify();
645 })
646 .ok();
647 }),
648 );
649 cx.notify()
650 }
651
652 fn layout_selections(
653 &self,
654 start_anchor: Anchor,
655 end_anchor: Anchor,
656 snapshot: &EditorSnapshot,
657 start_row: u32,
658 end_row: u32,
659 cx: &mut ElementContext,
660 ) -> (
661 Vec<(PlayerColor, Vec<SelectionLayout>)>,
662 BTreeMap<u32, bool>,
663 Option<DisplayPoint>,
664 ) {
665 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
666 let mut active_rows = BTreeMap::new();
667 let mut newest_selection_head = None;
668 let editor = self.editor.read(cx);
669
670 if editor.show_local_selections {
671 let mut local_selections: Vec<Selection<Point>> = editor
672 .selections
673 .disjoint_in_range(start_anchor..end_anchor, cx);
674 local_selections.extend(editor.selections.pending(cx));
675 let mut layouts = Vec::new();
676 let newest = editor.selections.newest(cx);
677 for selection in local_selections.drain(..) {
678 let is_empty = selection.start == selection.end;
679 let is_newest = selection == newest;
680
681 let layout = SelectionLayout::new(
682 selection,
683 editor.selections.line_mode,
684 editor.cursor_shape,
685 &snapshot.display_snapshot,
686 is_newest,
687 editor.leader_peer_id.is_none(),
688 None,
689 );
690 if is_newest {
691 newest_selection_head = Some(layout.head);
692 }
693
694 for row in cmp::max(layout.active_rows.start, start_row)
695 ..=cmp::min(layout.active_rows.end, end_row)
696 {
697 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
698 *contains_non_empty_selection |= !is_empty;
699 }
700 layouts.push(layout);
701 }
702
703 let player = if editor.read_only(cx) {
704 cx.theme().players().read_only()
705 } else {
706 self.style.local_player
707 };
708
709 selections.push((player, layouts));
710 }
711
712 if let Some(collaboration_hub) = &editor.collaboration_hub {
713 // When following someone, render the local selections in their color.
714 if let Some(leader_id) = editor.leader_peer_id {
715 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
716 if let Some(participant_index) = collaboration_hub
717 .user_participant_indices(cx)
718 .get(&collaborator.user_id)
719 {
720 if let Some((local_selection_style, _)) = selections.first_mut() {
721 *local_selection_style = cx
722 .theme()
723 .players()
724 .color_for_participant(participant_index.0);
725 }
726 }
727 }
728 }
729
730 let mut remote_selections = HashMap::default();
731 for selection in snapshot.remote_selections_in_range(
732 &(start_anchor..end_anchor),
733 collaboration_hub.as_ref(),
734 cx,
735 ) {
736 let selection_style = if let Some(participant_index) = selection.participant_index {
737 cx.theme()
738 .players()
739 .color_for_participant(participant_index.0)
740 } else {
741 cx.theme().players().absent()
742 };
743
744 // Don't re-render the leader's selections, since the local selections
745 // match theirs.
746 if Some(selection.peer_id) == editor.leader_peer_id {
747 continue;
748 }
749 let key = HoveredCursor {
750 replica_id: selection.replica_id,
751 selection_id: selection.selection.id,
752 };
753
754 let is_shown =
755 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
756
757 remote_selections
758 .entry(selection.replica_id)
759 .or_insert((selection_style, Vec::new()))
760 .1
761 .push(SelectionLayout::new(
762 selection.selection,
763 selection.line_mode,
764 selection.cursor_shape,
765 &snapshot.display_snapshot,
766 false,
767 false,
768 if is_shown { selection.user_name } else { None },
769 ));
770 }
771
772 selections.extend(remote_selections.into_values());
773 }
774 (selections, active_rows, newest_selection_head)
775 }
776
777 #[allow(clippy::too_many_arguments)]
778 fn layout_folds(
779 &self,
780 snapshot: &EditorSnapshot,
781 content_origin: gpui::Point<Pixels>,
782 visible_anchor_range: Range<Anchor>,
783 visible_display_row_range: Range<u32>,
784 scroll_pixel_position: gpui::Point<Pixels>,
785 line_height: Pixels,
786 line_layouts: &[LineWithInvisibles],
787 cx: &mut ElementContext,
788 ) -> Vec<FoldLayout> {
789 snapshot
790 .folds_in_range(visible_anchor_range.clone())
791 .filter_map(|fold| {
792 let fold_range = fold.range.clone();
793 let display_range = fold.range.start.to_display_point(&snapshot)
794 ..fold.range.end.to_display_point(&snapshot);
795 debug_assert_eq!(display_range.start.row(), display_range.end.row());
796 let row = display_range.start.row();
797 debug_assert!(row < visible_display_row_range.end);
798 let line_layout = line_layouts
799 .get((row - visible_display_row_range.start) as usize)
800 .map(|l| &l.line)?;
801
802 let start_x = content_origin.x
803 + line_layout.x_for_index(display_range.start.column() as usize)
804 - scroll_pixel_position.x;
805 let start_y = content_origin.y + row as f32 * line_height - scroll_pixel_position.y;
806 let end_x = content_origin.x
807 + line_layout.x_for_index(display_range.end.column() as usize)
808 - scroll_pixel_position.x;
809
810 let fold_bounds = Bounds {
811 origin: point(start_x, start_y),
812 size: size(end_x - start_x, line_height),
813 };
814
815 let mut hover_element = div()
816 .id(fold.id)
817 .size_full()
818 .cursor_pointer()
819 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
820 .on_click(
821 cx.listener_for(&self.editor, move |editor: &mut Editor, _, cx| {
822 editor.unfold_ranges(
823 [fold_range.start..fold_range.end],
824 true,
825 false,
826 cx,
827 );
828 cx.stop_propagation();
829 }),
830 )
831 .into_any();
832 hover_element.layout(fold_bounds.origin, fold_bounds.size.into(), cx);
833 Some(FoldLayout {
834 display_range,
835 hover_element,
836 })
837 })
838 .collect()
839 }
840
841 #[allow(clippy::too_many_arguments)]
842 fn layout_cursors(
843 &self,
844 snapshot: &EditorSnapshot,
845 selections: &[(PlayerColor, Vec<SelectionLayout>)],
846 visible_display_row_range: Range<u32>,
847 line_layouts: &[LineWithInvisibles],
848 text_hitbox: &Hitbox,
849 content_origin: gpui::Point<Pixels>,
850 scroll_pixel_position: gpui::Point<Pixels>,
851 line_height: Pixels,
852 em_width: Pixels,
853 cx: &mut ElementContext,
854 ) -> Vec<CursorLayout> {
855 self.editor.update(cx, |editor, cx| {
856 let mut cursors = Vec::new();
857 for (player_color, selections) in selections {
858 for selection in selections {
859 let cursor_position = selection.head;
860 if (selection.is_local && !editor.show_local_cursors(cx))
861 || !visible_display_row_range.contains(&cursor_position.row())
862 {
863 continue;
864 }
865
866 let cursor_row_layout = &line_layouts
867 [(cursor_position.row() - visible_display_row_range.start) as usize]
868 .line;
869 let cursor_column = cursor_position.column() as usize;
870
871 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
872 let mut block_width =
873 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
874 if block_width == Pixels::ZERO {
875 block_width = em_width;
876 }
877 let block_text = if let CursorShape::Block = selection.cursor_shape {
878 snapshot
879 .chars_at(cursor_position)
880 .next()
881 .and_then(|(character, _)| {
882 let text = if character == '\n' {
883 SharedString::from(" ")
884 } else {
885 SharedString::from(character.to_string())
886 };
887 let len = text.len();
888 cx.text_system()
889 .shape_line(
890 text,
891 cursor_row_layout.font_size,
892 &[TextRun {
893 len,
894 font: self.style.text.font(),
895 color: self.style.background,
896 background_color: None,
897 strikethrough: None,
898 underline: None,
899 }],
900 )
901 .log_err()
902 })
903 } else {
904 None
905 };
906
907 let x = cursor_character_x - scroll_pixel_position.x;
908 let y = (cursor_position.row() as f32 - scroll_pixel_position.y / line_height)
909 * line_height;
910 if selection.is_newest {
911 editor.pixel_position_of_newest_cursor = Some(point(
912 text_hitbox.origin.x + x + block_width / 2.,
913 text_hitbox.origin.y + y + line_height / 2.,
914 ))
915 }
916
917 let mut cursor = CursorLayout {
918 color: player_color.cursor,
919 block_width,
920 origin: point(x, y),
921 line_height,
922 shape: selection.cursor_shape,
923 block_text,
924 cursor_name: None,
925 };
926 let cursor_name = selection.user_name.clone().map(|name| CursorName {
927 string: name,
928 color: self.style.background,
929 is_top_row: cursor_position.row() == 0,
930 });
931 cx.with_element_context(|cx| cursor.layout(content_origin, cursor_name, cx));
932 cursors.push(cursor);
933 }
934 }
935 cursors
936 })
937 }
938
939 fn layout_scrollbar(
940 &self,
941 snapshot: &EditorSnapshot,
942 bounds: Bounds<Pixels>,
943 scroll_position: gpui::Point<f32>,
944 line_height: Pixels,
945 height_in_lines: f32,
946 cx: &mut ElementContext,
947 ) -> Option<ScrollbarLayout> {
948 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
949 let show_scrollbars = match scrollbar_settings.show {
950 ShowScrollbar::Auto => {
951 let editor = self.editor.read(cx);
952 let is_singleton = editor.is_singleton(cx);
953 // Git
954 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
955 ||
956 // Selections
957 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
958 ||
959 // Symbols Selections
960 (is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
961 ||
962 // Diagnostics
963 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
964 ||
965 // Scrollmanager
966 editor.scroll_manager.scrollbars_visible()
967 }
968 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
969 ShowScrollbar::Always => true,
970 ShowScrollbar::Never => false,
971 };
972 if snapshot.mode != EditorMode::Full {
973 return None;
974 }
975
976 let visible_row_range = scroll_position.y..scroll_position.y + height_in_lines;
977
978 // If a drag took place after we started dragging the scrollbar,
979 // cancel the scrollbar drag.
980 if cx.has_active_drag() {
981 self.editor.update(cx, |editor, cx| {
982 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
983 });
984 }
985
986 let track_bounds = Bounds::from_corners(
987 point(self.scrollbar_left(&bounds), bounds.origin.y),
988 point(bounds.lower_right().x, bounds.lower_left().y),
989 );
990
991 let scroll_height = snapshot.max_point().row() as f32 + height_in_lines;
992 let mut height = bounds.size.height;
993 let mut first_row_y_offset = px(0.0);
994
995 // Impose a minimum height on the scrollbar thumb
996 let row_height = height / scroll_height;
997 let min_thumb_height = line_height;
998 let thumb_height = height_in_lines * row_height;
999 if thumb_height < min_thumb_height {
1000 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1001 height -= min_thumb_height - thumb_height;
1002 }
1003
1004 Some(ScrollbarLayout {
1005 hitbox: cx.insert_hitbox(track_bounds, false),
1006 visible_row_range,
1007 height,
1008 scroll_height,
1009 first_row_y_offset,
1010 row_height,
1011 visible: show_scrollbars,
1012 })
1013 }
1014
1015 #[allow(clippy::too_many_arguments)]
1016 fn layout_gutter_fold_indicators(
1017 &self,
1018 fold_statuses: Vec<Option<(FoldStatus, u32, bool)>>,
1019 line_height: Pixels,
1020 gutter_dimensions: &GutterDimensions,
1021 gutter_settings: crate::editor_settings::Gutter,
1022 scroll_pixel_position: gpui::Point<Pixels>,
1023 gutter_hitbox: &Hitbox,
1024 cx: &mut ElementContext,
1025 ) -> Vec<Option<AnyElement>> {
1026 let mut indicators = self.editor.update(cx, |editor, cx| {
1027 editor.render_fold_indicators(
1028 fold_statuses,
1029 &self.style,
1030 editor.gutter_hovered,
1031 line_height,
1032 gutter_dimensions.margin,
1033 cx,
1034 )
1035 });
1036
1037 for (ix, fold_indicator) in indicators.iter_mut().enumerate() {
1038 if let Some(fold_indicator) = fold_indicator {
1039 debug_assert!(gutter_settings.folds);
1040 let available_space = size(
1041 AvailableSpace::MinContent,
1042 AvailableSpace::Definite(line_height * 0.55),
1043 );
1044 let fold_indicator_size = fold_indicator.measure(available_space, cx);
1045
1046 let position = point(
1047 gutter_dimensions.width - gutter_dimensions.right_padding,
1048 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1049 );
1050 let centering_offset = point(
1051 (gutter_dimensions.right_padding + gutter_dimensions.margin
1052 - fold_indicator_size.width)
1053 / 2.,
1054 (line_height - fold_indicator_size.height) / 2.,
1055 );
1056 let origin = gutter_hitbox.origin + position + centering_offset;
1057 fold_indicator.layout(origin, available_space, cx);
1058 }
1059 }
1060
1061 indicators
1062 }
1063
1064 //Folds contained in a hunk are ignored apart from shrinking visual size
1065 //If a fold contains any hunks then that fold line is marked as modified
1066 fn layout_git_gutters(
1067 &self,
1068 display_rows: Range<u32>,
1069 snapshot: &EditorSnapshot,
1070 ) -> Vec<DisplayDiffHunk> {
1071 let buffer_snapshot = &snapshot.buffer_snapshot;
1072
1073 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1074 .to_point(snapshot)
1075 .row;
1076 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1077 .to_point(snapshot)
1078 .row;
1079
1080 buffer_snapshot
1081 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1082 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1083 .dedup()
1084 .collect()
1085 }
1086
1087 #[allow(clippy::too_many_arguments)]
1088 fn layout_blame_entries(
1089 &self,
1090 buffer_rows: impl Iterator<Item = Option<u32>>,
1091 em_width: Pixels,
1092 scroll_position: gpui::Point<f32>,
1093 line_height: Pixels,
1094 gutter_hitbox: &Hitbox,
1095 max_width: Option<Pixels>,
1096 cx: &mut ElementContext,
1097 ) -> Option<Vec<AnyElement>> {
1098 let Some(blame) = self.editor.read(cx).blame.as_ref().cloned() else {
1099 return None;
1100 };
1101
1102 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1103 blame.blame_for_rows(buffer_rows, cx).collect()
1104 });
1105
1106 let width = if let Some(max_width) = max_width {
1107 AvailableSpace::Definite(max_width)
1108 } else {
1109 AvailableSpace::MaxContent
1110 };
1111 let scroll_top = scroll_position.y * line_height;
1112 let start_x = em_width * 1;
1113
1114 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1115 let text_style = &self.style.text;
1116
1117 let shaped_lines = blamed_rows
1118 .into_iter()
1119 .enumerate()
1120 .flat_map(|(ix, blame_entry)| {
1121 if let Some(blame_entry) = blame_entry {
1122 let mut element = render_blame_entry(
1123 ix,
1124 &blame,
1125 blame_entry,
1126 text_style,
1127 &mut last_used_color,
1128 self.editor.clone(),
1129 cx,
1130 );
1131
1132 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1133 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1134
1135 element.layout(absolute_offset, size(width, AvailableSpace::MinContent), cx);
1136
1137 Some(element)
1138 } else {
1139 None
1140 }
1141 })
1142 .collect();
1143
1144 Some(shaped_lines)
1145 }
1146
1147 fn layout_code_actions_indicator(
1148 &self,
1149 line_height: Pixels,
1150 newest_selection_head: DisplayPoint,
1151 scroll_pixel_position: gpui::Point<Pixels>,
1152 gutter_dimensions: &GutterDimensions,
1153 gutter_hitbox: &Hitbox,
1154 cx: &mut ElementContext,
1155 ) -> Option<AnyElement> {
1156 let mut active = false;
1157 let mut button = None;
1158 self.editor.update(cx, |editor, cx| {
1159 active = matches!(
1160 editor.context_menu.read().as_ref(),
1161 Some(crate::ContextMenu::CodeActions(_))
1162 );
1163 button = editor.render_code_actions_indicator(&self.style, active, cx);
1164 });
1165
1166 let mut button = button?.into_any_element();
1167 let available_space = size(
1168 AvailableSpace::MinContent,
1169 AvailableSpace::Definite(line_height),
1170 );
1171 let indicator_size = button.measure(available_space, cx);
1172
1173 let blame_width = gutter_dimensions
1174 .git_blame_entries_width
1175 .unwrap_or(Pixels::ZERO);
1176
1177 let mut x = blame_width;
1178 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
1179 - indicator_size.width
1180 - blame_width;
1181 x += available_width / 2.;
1182
1183 let mut y = newest_selection_head.row() as f32 * line_height - scroll_pixel_position.y;
1184 y += (line_height - indicator_size.height) / 2.;
1185
1186 button.layout(gutter_hitbox.origin + point(x, y), available_space, cx);
1187 Some(button)
1188 }
1189
1190 fn calculate_relative_line_numbers(
1191 &self,
1192 buffer_rows: Vec<Option<u32>>,
1193 rows: &Range<u32>,
1194 relative_to: Option<u32>,
1195 ) -> HashMap<u32, u32> {
1196 let mut relative_rows: HashMap<u32, u32> = Default::default();
1197 let Some(relative_to) = relative_to else {
1198 return relative_rows;
1199 };
1200
1201 let start = rows.start.min(relative_to);
1202
1203 let head_idx = relative_to - start;
1204 let mut delta = 1;
1205 let mut i = head_idx + 1;
1206 while i < buffer_rows.len() as u32 {
1207 if buffer_rows[i as usize].is_some() {
1208 if rows.contains(&(i + start)) {
1209 relative_rows.insert(i + start, delta);
1210 }
1211 delta += 1;
1212 }
1213 i += 1;
1214 }
1215 delta = 1;
1216 i = head_idx.min(buffer_rows.len() as u32 - 1);
1217 while i > 0 && buffer_rows[i as usize].is_none() {
1218 i -= 1;
1219 }
1220
1221 while i > 0 {
1222 i -= 1;
1223 if buffer_rows[i as usize].is_some() {
1224 if rows.contains(&(i + start)) {
1225 relative_rows.insert(i + start, delta);
1226 }
1227 delta += 1;
1228 }
1229 }
1230
1231 relative_rows
1232 }
1233
1234 fn layout_line_numbers(
1235 &self,
1236 rows: Range<u32>,
1237 buffer_rows: impl Iterator<Item = Option<u32>>,
1238 active_rows: &BTreeMap<u32, bool>,
1239 newest_selection_head: Option<DisplayPoint>,
1240 snapshot: &EditorSnapshot,
1241 cx: &ElementContext,
1242 ) -> (
1243 Vec<Option<ShapedLine>>,
1244 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1245 ) {
1246 let editor = self.editor.read(cx);
1247 let is_singleton = editor.is_singleton(cx);
1248 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1249 let newest = editor.selections.newest::<Point>(cx);
1250 SelectionLayout::new(
1251 newest,
1252 editor.selections.line_mode,
1253 editor.cursor_shape,
1254 &snapshot.display_snapshot,
1255 true,
1256 true,
1257 None,
1258 )
1259 .head
1260 });
1261 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1262 let include_line_numbers =
1263 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full;
1264 let include_fold_statuses =
1265 EditorSettings::get_global(cx).gutter.folds && snapshot.mode == EditorMode::Full;
1266 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1267 let mut fold_statuses = Vec::with_capacity(rows.len());
1268 let mut line_number = String::new();
1269 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1270 let relative_to = if is_relative {
1271 Some(newest_selection_head.row())
1272 } else {
1273 None
1274 };
1275
1276 let buffer_rows = buffer_rows.collect::<Vec<_>>();
1277 let relative_rows =
1278 self.calculate_relative_line_numbers(buffer_rows.clone(), &rows, relative_to);
1279
1280 for (ix, row) in buffer_rows.into_iter().enumerate() {
1281 let display_row = rows.start + ix as u32;
1282 let (active, color) = if active_rows.contains_key(&display_row) {
1283 (true, cx.theme().colors().editor_active_line_number)
1284 } else {
1285 (false, cx.theme().colors().editor_line_number)
1286 };
1287 if let Some(buffer_row) = row {
1288 if include_line_numbers {
1289 line_number.clear();
1290 let default_number = buffer_row + 1;
1291 let number = relative_rows
1292 .get(&(ix as u32 + rows.start))
1293 .unwrap_or(&default_number);
1294 write!(&mut line_number, "{}", number).unwrap();
1295 let run = TextRun {
1296 len: line_number.len(),
1297 font: self.style.text.font(),
1298 color,
1299 background_color: None,
1300 underline: None,
1301 strikethrough: None,
1302 };
1303 let shaped_line = cx
1304 .text_system()
1305 .shape_line(line_number.clone().into(), font_size, &[run])
1306 .unwrap();
1307 shaped_line_numbers.push(Some(shaped_line));
1308 }
1309 if include_fold_statuses {
1310 fold_statuses.push(
1311 is_singleton
1312 .then(|| {
1313 snapshot
1314 .fold_for_line(buffer_row)
1315 .map(|fold_status| (fold_status, buffer_row, active))
1316 })
1317 .flatten(),
1318 )
1319 }
1320 } else {
1321 fold_statuses.push(None);
1322 shaped_line_numbers.push(None);
1323 }
1324 }
1325
1326 (shaped_line_numbers, fold_statuses)
1327 }
1328
1329 fn layout_lines(
1330 &self,
1331 rows: Range<u32>,
1332 line_number_layouts: &[Option<ShapedLine>],
1333 snapshot: &EditorSnapshot,
1334 cx: &ElementContext,
1335 ) -> Vec<LineWithInvisibles> {
1336 if rows.start >= rows.end {
1337 return Vec::new();
1338 }
1339
1340 // Show the placeholder when the editor is empty
1341 if snapshot.is_empty() {
1342 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1343 let placeholder_color = cx.theme().colors().text_placeholder;
1344 let placeholder_text = snapshot.placeholder_text();
1345
1346 let placeholder_lines = placeholder_text
1347 .as_ref()
1348 .map_or("", AsRef::as_ref)
1349 .split('\n')
1350 .skip(rows.start as usize)
1351 .chain(iter::repeat(""))
1352 .take(rows.len());
1353 placeholder_lines
1354 .filter_map(move |line| {
1355 let run = TextRun {
1356 len: line.len(),
1357 font: self.style.text.font(),
1358 color: placeholder_color,
1359 background_color: None,
1360 underline: Default::default(),
1361 strikethrough: None,
1362 };
1363 cx.text_system()
1364 .shape_line(line.to_string().into(), font_size, &[run])
1365 .log_err()
1366 })
1367 .map(|line| LineWithInvisibles {
1368 line,
1369 invisibles: Vec::new(),
1370 })
1371 .collect()
1372 } else {
1373 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1374 LineWithInvisibles::from_chunks(
1375 chunks,
1376 &self.style.text,
1377 MAX_LINE_LEN,
1378 rows.len(),
1379 line_number_layouts,
1380 snapshot.mode,
1381 cx,
1382 )
1383 }
1384 }
1385
1386 #[allow(clippy::too_many_arguments)]
1387 fn build_blocks(
1388 &self,
1389 rows: Range<u32>,
1390 snapshot: &EditorSnapshot,
1391 hitbox: &Hitbox,
1392 text_hitbox: &Hitbox,
1393 scroll_width: &mut Pixels,
1394 gutter_dimensions: &GutterDimensions,
1395 em_width: Pixels,
1396 text_x: Pixels,
1397 line_height: Pixels,
1398 line_layouts: &[LineWithInvisibles],
1399 cx: &mut ElementContext,
1400 ) -> Vec<BlockLayout> {
1401 let mut block_id = 0;
1402 let (fixed_blocks, non_fixed_blocks) = snapshot
1403 .blocks_in_range(rows.clone())
1404 .partition::<Vec<_>, _>(|(_, block)| match block {
1405 TransformBlock::ExcerptHeader { .. } => false,
1406 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1407 });
1408
1409 let render_block = |block: &TransformBlock,
1410 available_space: Size<AvailableSpace>,
1411 block_id: usize,
1412 block_row_start: u32,
1413 cx: &mut ElementContext| {
1414 let mut element = match block {
1415 TransformBlock::Custom(block) => {
1416 let align_to = block
1417 .position()
1418 .to_point(&snapshot.buffer_snapshot)
1419 .to_display_point(snapshot);
1420 let anchor_x = text_x
1421 + if rows.contains(&align_to.row()) {
1422 line_layouts[(align_to.row() - rows.start) as usize]
1423 .line
1424 .x_for_index(align_to.column() as usize)
1425 } else {
1426 layout_line(align_to.row(), snapshot, &self.style, cx)
1427 .unwrap()
1428 .x_for_index(align_to.column() as usize)
1429 };
1430
1431 block.render(&mut BlockContext {
1432 context: cx,
1433 anchor_x,
1434 gutter_dimensions,
1435 line_height,
1436 em_width,
1437 block_id,
1438 max_width: text_hitbox.size.width.max(*scroll_width),
1439 editor_style: &self.style,
1440 })
1441 }
1442
1443 TransformBlock::ExcerptHeader {
1444 buffer,
1445 range,
1446 starts_new_buffer,
1447 height,
1448 ..
1449 } => {
1450 let include_root = self
1451 .editor
1452 .read(cx)
1453 .project
1454 .as_ref()
1455 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1456 .unwrap_or_default();
1457
1458 #[derive(Clone)]
1459 struct JumpData {
1460 position: Point,
1461 anchor: text::Anchor,
1462 path: ProjectPath,
1463 line_offset_from_top: u32,
1464 }
1465
1466 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
1467 let jump_path = ProjectPath {
1468 worktree_id: file.worktree_id(cx),
1469 path: file.path.clone(),
1470 };
1471 let jump_anchor = range
1472 .primary
1473 .as_ref()
1474 .map_or(range.context.start, |primary| primary.start);
1475
1476 let excerpt_start = range.context.start;
1477 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
1478 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
1479 0
1480 } else {
1481 let excerpt_start_row =
1482 language::ToPoint::to_point(&jump_anchor, buffer).row;
1483 jump_position.row - excerpt_start_row
1484 };
1485
1486 let line_offset_from_top =
1487 block_row_start + *height as u32 + offset_from_excerpt_start
1488 - snapshot
1489 .scroll_anchor
1490 .scroll_position(&snapshot.display_snapshot)
1491 .y as u32;
1492
1493 JumpData {
1494 position: jump_position,
1495 anchor: jump_anchor,
1496 path: jump_path,
1497 line_offset_from_top,
1498 }
1499 });
1500
1501 let element = if *starts_new_buffer {
1502 let path = buffer.resolve_file_path(cx, include_root);
1503 let mut filename = None;
1504 let mut parent_path = None;
1505 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
1506 if let Some(path) = path {
1507 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
1508 parent_path = path
1509 .parent()
1510 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
1511 }
1512
1513 v_flex()
1514 .id(("path header container", block_id))
1515 .size_full()
1516 .justify_center()
1517 .p(gpui::px(6.))
1518 .child(
1519 h_flex()
1520 .id("path header block")
1521 .size_full()
1522 .pl(gpui::px(12.))
1523 .pr(gpui::px(8.))
1524 .rounded_md()
1525 .shadow_md()
1526 .border()
1527 .border_color(cx.theme().colors().border)
1528 .bg(cx.theme().colors().editor_subheader_background)
1529 .justify_between()
1530 .hover(|style| style.bg(cx.theme().colors().element_hover))
1531 .child(
1532 h_flex().gap_3().child(
1533 h_flex()
1534 .gap_2()
1535 .child(
1536 filename
1537 .map(SharedString::from)
1538 .unwrap_or_else(|| "untitled".into()),
1539 )
1540 .when_some(parent_path, |then, path| {
1541 then.child(
1542 div().child(path).text_color(
1543 cx.theme().colors().text_muted,
1544 ),
1545 )
1546 }),
1547 ),
1548 )
1549 .when_some(jump_data.clone(), |this, jump_data| {
1550 this.cursor_pointer()
1551 .tooltip(|cx| {
1552 Tooltip::for_action(
1553 "Jump to File",
1554 &OpenExcerpts,
1555 cx,
1556 )
1557 })
1558 .on_mouse_down(MouseButton::Left, |_, cx| {
1559 cx.stop_propagation()
1560 })
1561 .on_click(cx.listener_for(&self.editor, {
1562 move |editor, _, cx| {
1563 editor.jump(
1564 jump_data.path.clone(),
1565 jump_data.position,
1566 jump_data.anchor,
1567 jump_data.line_offset_from_top,
1568 cx,
1569 );
1570 }
1571 }))
1572 }),
1573 )
1574 } else {
1575 v_flex()
1576 .id(("collapsed context", block_id))
1577 .size_full()
1578 .child(
1579 div()
1580 .flex()
1581 .v_flex()
1582 .justify_start()
1583 .id("jump to collapsed context")
1584 .w(relative(1.0))
1585 .h_full()
1586 .child(
1587 div()
1588 .h_px()
1589 .w_full()
1590 .bg(cx.theme().colors().border_variant)
1591 .group_hover("excerpt-jump-action", |style| {
1592 style.bg(cx.theme().colors().border)
1593 }),
1594 ),
1595 )
1596 .child(
1597 h_flex()
1598 .justify_end()
1599 .flex_none()
1600 .w(
1601 gutter_dimensions.width - (gutter_dimensions.left_padding), // + gutter_dimensions.right_padding)
1602 )
1603 .h_full()
1604 .child(
1605 ButtonLike::new("jump-icon")
1606 .style(ButtonStyle::Transparent)
1607 .child(
1608 svg()
1609 .path(IconName::ArrowUpRight.path())
1610 .size(IconSize::XSmall.rems())
1611 .text_color(cx.theme().colors().border)
1612 .group_hover("excerpt-jump-action", |style| {
1613 style.text_color(
1614 cx.theme().colors().editor_line_number,
1615 )
1616 }),
1617 )
1618 .when_some(jump_data.clone(), |this, jump_data| {
1619 this.on_click(cx.listener_for(&self.editor, {
1620 let path = jump_data.path.clone();
1621 move |editor, _, cx| {
1622 editor.jump(
1623 path.clone(),
1624 jump_data.position,
1625 jump_data.anchor,
1626 jump_data.line_offset_from_top,
1627 cx,
1628 );
1629 }
1630 }))
1631 .tooltip({
1632 move |cx| {
1633 Tooltip::for_action(
1634 format!(
1635 "Jump to {}:L{}",
1636 jump_data.path.path.display(),
1637 jump_data.position.row + 1
1638 ),
1639 &OpenExcerpts,
1640 cx,
1641 )
1642 }
1643 })
1644 }),
1645 ),
1646 )
1647 .group("excerpt-jump-action")
1648 .cursor_pointer()
1649 .when_some(jump_data.clone(), |this, jump_data| {
1650 this.on_click(cx.listener_for(&self.editor, {
1651 let path = jump_data.path.clone();
1652 move |editor, _, cx| {
1653 cx.stop_propagation();
1654
1655 editor.jump(
1656 path.clone(),
1657 jump_data.position,
1658 jump_data.anchor,
1659 jump_data.line_offset_from_top,
1660 cx,
1661 );
1662 }
1663 }))
1664 .tooltip(move |cx| {
1665 Tooltip::for_action(
1666 format!(
1667 "Jump to {}:L{}",
1668 jump_data.path.path.display(),
1669 jump_data.position.row + 1
1670 ),
1671 &OpenExcerpts,
1672 cx,
1673 )
1674 })
1675 })
1676 };
1677 element.into_any()
1678 }
1679 };
1680
1681 let size = element.measure(available_space, cx);
1682 (element, size)
1683 };
1684
1685 let mut fixed_block_max_width = Pixels::ZERO;
1686 let mut blocks = Vec::new();
1687 for (row, block) in fixed_blocks {
1688 let available_space = size(
1689 AvailableSpace::MinContent,
1690 AvailableSpace::Definite(block.height() as f32 * line_height),
1691 );
1692 let (element, element_size) = render_block(block, available_space, block_id, row, cx);
1693 block_id += 1;
1694 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
1695 blocks.push(BlockLayout {
1696 row,
1697 element,
1698 available_space,
1699 style: BlockStyle::Fixed,
1700 });
1701 }
1702 for (row, block) in non_fixed_blocks {
1703 let style = match block {
1704 TransformBlock::Custom(block) => block.style(),
1705 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
1706 };
1707 let width = match style {
1708 BlockStyle::Sticky => hitbox.size.width,
1709 BlockStyle::Flex => hitbox
1710 .size
1711 .width
1712 .max(fixed_block_max_width)
1713 .max(gutter_dimensions.width + *scroll_width),
1714 BlockStyle::Fixed => unreachable!(),
1715 };
1716 let available_space = size(
1717 AvailableSpace::Definite(width),
1718 AvailableSpace::Definite(block.height() as f32 * line_height),
1719 );
1720 let (element, _) = render_block(block, available_space, block_id, row, cx);
1721 block_id += 1;
1722 blocks.push(BlockLayout {
1723 row,
1724 element,
1725 available_space,
1726 style,
1727 });
1728 }
1729
1730 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
1731 blocks
1732 }
1733
1734 fn layout_blocks(
1735 &self,
1736 blocks: &mut Vec<BlockLayout>,
1737 hitbox: &Hitbox,
1738 line_height: Pixels,
1739 scroll_pixel_position: gpui::Point<Pixels>,
1740 cx: &mut ElementContext,
1741 ) {
1742 for block in blocks {
1743 let mut origin = hitbox.origin
1744 + point(
1745 Pixels::ZERO,
1746 block.row as f32 * line_height - scroll_pixel_position.y,
1747 );
1748 if !matches!(block.style, BlockStyle::Sticky) {
1749 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
1750 }
1751 block.element.layout(origin, block.available_space, cx);
1752 }
1753 }
1754
1755 #[allow(clippy::too_many_arguments)]
1756 fn layout_context_menu(
1757 &self,
1758 line_height: Pixels,
1759 hitbox: &Hitbox,
1760 text_hitbox: &Hitbox,
1761 content_origin: gpui::Point<Pixels>,
1762 start_row: u32,
1763 scroll_pixel_position: gpui::Point<Pixels>,
1764 line_layouts: &[LineWithInvisibles],
1765 newest_selection_head: DisplayPoint,
1766 cx: &mut ElementContext,
1767 ) -> bool {
1768 let max_height = cmp::min(
1769 12. * line_height,
1770 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
1771 );
1772 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
1773 if editor.context_menu_visible() {
1774 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
1775 } else {
1776 None
1777 }
1778 }) else {
1779 return false;
1780 };
1781
1782 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1783 let context_menu_size = context_menu.measure(available_space, cx);
1784
1785 let cursor_row_layout = &line_layouts[(position.row() - start_row) as usize].line;
1786 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1787 let y = (position.row() + 1) as f32 * line_height - scroll_pixel_position.y;
1788 let mut list_origin = content_origin + point(x, y);
1789 let list_width = context_menu_size.width;
1790 let list_height = context_menu_size.height;
1791
1792 // Snap the right edge of the list to the right edge of the window if
1793 // its horizontal bounds overflow.
1794 if list_origin.x + list_width > cx.viewport_size().width {
1795 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1796 }
1797
1798 if list_origin.y + list_height > text_hitbox.lower_right().y {
1799 list_origin.y -= line_height + list_height;
1800 }
1801
1802 cx.defer_draw(context_menu, list_origin, 1);
1803 true
1804 }
1805
1806 fn layout_mouse_context_menu(&self, cx: &mut ElementContext) -> Option<AnyElement> {
1807 let mouse_context_menu = self.editor.read(cx).mouse_context_menu.as_ref()?;
1808 let mut element = deferred(
1809 anchored()
1810 .position(mouse_context_menu.position)
1811 .child(mouse_context_menu.context_menu.clone())
1812 .anchor(AnchorCorner::TopLeft)
1813 .snap_to_window(),
1814 )
1815 .into_any();
1816
1817 element.layout(gpui::Point::default(), AvailableSpace::min_size(), cx);
1818 Some(element)
1819 }
1820
1821 #[allow(clippy::too_many_arguments)]
1822 fn layout_hover_popovers(
1823 &self,
1824 snapshot: &EditorSnapshot,
1825 hitbox: &Hitbox,
1826 text_hitbox: &Hitbox,
1827 visible_display_row_range: Range<u32>,
1828 content_origin: gpui::Point<Pixels>,
1829 scroll_pixel_position: gpui::Point<Pixels>,
1830 line_layouts: &[LineWithInvisibles],
1831 line_height: Pixels,
1832 em_width: Pixels,
1833 cx: &mut ElementContext,
1834 ) {
1835 struct MeasuredHoverPopover {
1836 element: AnyElement,
1837 size: Size<Pixels>,
1838 horizontal_offset: Pixels,
1839 }
1840
1841 let max_size = size(
1842 (120. * em_width) // Default size
1843 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
1844 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1845 (16. * line_height) // Default size
1846 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
1847 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1848 );
1849
1850 let hover_popovers = self.editor.update(cx, |editor, cx| {
1851 editor.hover_state.render(
1852 &snapshot,
1853 &self.style,
1854 visible_display_row_range.clone(),
1855 max_size,
1856 editor.workspace.as_ref().map(|(w, _)| w.clone()),
1857 cx,
1858 )
1859 });
1860 let Some((position, hover_popovers)) = hover_popovers else {
1861 return;
1862 };
1863
1864 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1865
1866 // This is safe because we check on layout whether the required row is available
1867 let hovered_row_layout =
1868 &line_layouts[(position.row() - visible_display_row_range.start) as usize].line;
1869
1870 // Compute Hovered Point
1871 let x =
1872 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1873 let y = position.row() as f32 * line_height - scroll_pixel_position.y;
1874 let hovered_point = content_origin + point(x, y);
1875
1876 let mut overall_height = Pixels::ZERO;
1877 let mut measured_hover_popovers = Vec::new();
1878 for mut hover_popover in hover_popovers {
1879 let size = hover_popover.measure(available_space, cx);
1880 let horizontal_offset =
1881 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
1882
1883 overall_height += HOVER_POPOVER_GAP + size.height;
1884
1885 measured_hover_popovers.push(MeasuredHoverPopover {
1886 element: hover_popover,
1887 size,
1888 horizontal_offset,
1889 });
1890 }
1891 overall_height += HOVER_POPOVER_GAP;
1892
1893 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
1894 let mut occlusion = div()
1895 .size_full()
1896 .occlude()
1897 .on_mouse_move(|_, cx| cx.stop_propagation())
1898 .into_any_element();
1899 occlusion.measure(size(width, HOVER_POPOVER_GAP).into(), cx);
1900 cx.defer_draw(occlusion, origin, 2);
1901 }
1902
1903 if hovered_point.y > overall_height {
1904 // There is enough space above. Render popovers above the hovered point
1905 let mut current_y = hovered_point.y;
1906 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
1907 let size = popover.size;
1908 let popover_origin = point(
1909 hovered_point.x + popover.horizontal_offset,
1910 current_y - size.height,
1911 );
1912
1913 cx.defer_draw(popover.element, popover_origin, 2);
1914 if position != itertools::Position::Last {
1915 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
1916 draw_occluder(size.width, origin, cx);
1917 }
1918
1919 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1920 }
1921 } else {
1922 // There is not enough space above. Render popovers below the hovered point
1923 let mut current_y = hovered_point.y + line_height;
1924 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
1925 let size = popover.size;
1926 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
1927
1928 cx.defer_draw(popover.element, popover_origin, 2);
1929 if position != itertools::Position::Last {
1930 let origin = point(popover_origin.x, popover_origin.y + size.height);
1931 draw_occluder(size.width, origin, cx);
1932 }
1933
1934 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1935 }
1936 }
1937 }
1938
1939 fn paint_background(&self, layout: &EditorLayout, cx: &mut ElementContext) {
1940 cx.paint_layer(layout.hitbox.bounds, |cx| {
1941 let scroll_top = layout.position_map.snapshot.scroll_position().y;
1942 let gutter_bg = cx.theme().colors().editor_gutter_background;
1943 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
1944 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
1945
1946 if let EditorMode::Full = layout.mode {
1947 let mut active_rows = layout.active_rows.iter().peekable();
1948 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
1949 let mut end_row = *start_row;
1950 while active_rows.peek().map_or(false, |r| {
1951 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
1952 }) {
1953 active_rows.next().unwrap();
1954 end_row += 1;
1955 }
1956
1957 if !contains_non_empty_selection {
1958 let origin = point(
1959 layout.hitbox.origin.x,
1960 layout.hitbox.origin.y
1961 + (*start_row as f32 - scroll_top)
1962 * layout.position_map.line_height,
1963 );
1964 let size = size(
1965 layout.hitbox.size.width,
1966 layout.position_map.line_height * (end_row - start_row + 1) as f32,
1967 );
1968 let active_line_bg = cx.theme().colors().editor_active_line_background;
1969 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
1970 }
1971 }
1972
1973 let mut paint_highlight =
1974 |highlight_row_start: u32, highlight_row_end: u32, color| {
1975 let origin = point(
1976 layout.hitbox.origin.x,
1977 layout.hitbox.origin.y
1978 + (highlight_row_start as f32 - scroll_top)
1979 * layout.position_map.line_height,
1980 );
1981 let size = size(
1982 layout.hitbox.size.width,
1983 layout.position_map.line_height
1984 * (highlight_row_end + 1 - highlight_row_start) as f32,
1985 );
1986 cx.paint_quad(fill(Bounds { origin, size }, color));
1987 };
1988
1989 let mut last_row = None;
1990 let mut highlight_row_start = 0u32;
1991 let mut highlight_row_end = 0u32;
1992 for (&row, &color) in &layout.highlighted_rows {
1993 let paint = last_row.map_or(false, |(last_row, last_color)| {
1994 last_color != color || last_row + 1 < row
1995 });
1996
1997 if paint {
1998 let paint_range_is_unfinished = highlight_row_end == 0;
1999 if paint_range_is_unfinished {
2000 highlight_row_end = row;
2001 last_row = None;
2002 }
2003 paint_highlight(highlight_row_start, highlight_row_end, color);
2004 highlight_row_start = 0;
2005 highlight_row_end = 0;
2006 if !paint_range_is_unfinished {
2007 highlight_row_start = row;
2008 last_row = Some((row, color));
2009 }
2010 } else {
2011 if last_row.is_none() {
2012 highlight_row_start = row;
2013 } else {
2014 highlight_row_end = row;
2015 }
2016 last_row = Some((row, color));
2017 }
2018 }
2019 if let Some((row, hsla)) = last_row {
2020 highlight_row_end = row;
2021 paint_highlight(highlight_row_start, highlight_row_end, hsla);
2022 }
2023
2024 let scroll_left =
2025 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
2026
2027 for (wrap_position, active) in layout.wrap_guides.iter() {
2028 let x = (layout.text_hitbox.origin.x
2029 + *wrap_position
2030 + layout.position_map.em_width / 2.)
2031 - scroll_left;
2032
2033 let show_scrollbars = layout
2034 .scrollbar_layout
2035 .as_ref()
2036 .map_or(false, |scrollbar| scrollbar.visible);
2037 if x < layout.text_hitbox.origin.x
2038 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
2039 {
2040 continue;
2041 }
2042
2043 let color = if *active {
2044 cx.theme().colors().editor_active_wrap_guide
2045 } else {
2046 cx.theme().colors().editor_wrap_guide
2047 };
2048 cx.paint_quad(fill(
2049 Bounds {
2050 origin: point(x, layout.text_hitbox.origin.y),
2051 size: size(px(1.), layout.text_hitbox.size.height),
2052 },
2053 color,
2054 ));
2055 }
2056 }
2057 })
2058 }
2059
2060 fn paint_gutter(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2061 let line_height = layout.position_map.line_height;
2062
2063 let scroll_position = layout.position_map.snapshot.scroll_position();
2064 let scroll_top = scroll_position.y * line_height;
2065
2066 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
2067
2068 let show_git_gutter = matches!(
2069 ProjectSettings::get_global(cx).git.git_gutter,
2070 Some(GitGutterSetting::TrackedFiles)
2071 );
2072
2073 if show_git_gutter {
2074 Self::paint_diff_hunks(layout, cx);
2075 }
2076
2077 if layout.blamed_display_rows.is_some() {
2078 self.paint_blamed_display_rows(layout, cx);
2079 }
2080
2081 for (ix, line) in layout.line_numbers.iter().enumerate() {
2082 if let Some(line) = line {
2083 let line_origin = layout.gutter_hitbox.origin
2084 + point(
2085 layout.gutter_hitbox.size.width
2086 - line.width
2087 - layout.gutter_dimensions.right_padding,
2088 ix as f32 * line_height - (scroll_top % line_height),
2089 );
2090
2091 line.paint(line_origin, line_height, cx).log_err();
2092 }
2093 }
2094
2095 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2096 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2097 for fold_indicator in layout.fold_indicators.iter_mut().flatten() {
2098 fold_indicator.paint(cx);
2099 }
2100 });
2101
2102 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
2103 indicator.paint(cx);
2104 }
2105 })
2106 }
2107
2108 fn paint_diff_hunks(layout: &EditorLayout, cx: &mut ElementContext) {
2109 if layout.display_hunks.is_empty() {
2110 return;
2111 }
2112
2113 let line_height = layout.position_map.line_height;
2114
2115 let scroll_position = layout.position_map.snapshot.scroll_position();
2116 let scroll_top = scroll_position.y * line_height;
2117
2118 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2119 for hunk in &layout.display_hunks {
2120 let (display_row_range, status) = match hunk {
2121 //TODO: This rendering is entirely a horrible hack
2122 &DisplayDiffHunk::Folded { display_row: row } => {
2123 let start_y = row as f32 * line_height - scroll_top;
2124 let end_y = start_y + line_height;
2125
2126 let width = 0.275 * line_height;
2127 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2128 let highlight_size = size(width * 2., end_y - start_y);
2129 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2130 cx.paint_quad(quad(
2131 highlight_bounds,
2132 Corners::all(1. * line_height),
2133 cx.theme().status().modified,
2134 Edges::default(),
2135 transparent_black(),
2136 ));
2137
2138 continue;
2139 }
2140
2141 DisplayDiffHunk::Unfolded {
2142 display_row_range,
2143 status,
2144 } => (display_row_range, status),
2145 };
2146
2147 let color = match status {
2148 DiffHunkStatus::Added => cx.theme().status().created,
2149 DiffHunkStatus::Modified => cx.theme().status().modified,
2150
2151 //TODO: This rendering is entirely a horrible hack
2152 DiffHunkStatus::Removed => {
2153 let row = display_row_range.start;
2154
2155 let offset = line_height / 2.;
2156 let start_y = row as f32 * line_height - offset - scroll_top;
2157 let end_y = start_y + line_height;
2158
2159 let width = 0.275 * line_height;
2160 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2161 let highlight_size = size(width * 2., end_y - start_y);
2162 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2163 cx.paint_quad(quad(
2164 highlight_bounds,
2165 Corners::all(1. * line_height),
2166 cx.theme().status().deleted,
2167 Edges::default(),
2168 transparent_black(),
2169 ));
2170
2171 continue;
2172 }
2173 };
2174
2175 let start_row = display_row_range.start;
2176 let end_row = display_row_range.end;
2177 // If we're in a multibuffer, row range span might include an
2178 // excerpt header, so if we were to draw the marker straight away,
2179 // the hunk might include the rows of that header.
2180 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
2181 // Instead, we simply check whether the range we're dealing with includes
2182 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
2183 let end_row_in_current_excerpt = layout
2184 .position_map
2185 .snapshot
2186 .blocks_in_range(start_row..end_row)
2187 .find_map(|(start_row, block)| {
2188 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
2189 Some(start_row)
2190 } else {
2191 None
2192 }
2193 })
2194 .unwrap_or(end_row);
2195
2196 let start_y = start_row as f32 * line_height - scroll_top;
2197 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
2198
2199 let width = 0.275 * line_height;
2200 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2201 let highlight_size = size(width * 2., end_y - start_y);
2202 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2203 cx.paint_quad(quad(
2204 highlight_bounds,
2205 Corners::all(0.05 * line_height),
2206 color,
2207 Edges::default(),
2208 transparent_black(),
2209 ));
2210 }
2211 })
2212 }
2213
2214 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2215 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
2216 return;
2217 };
2218
2219 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2220 for mut blame_element in blamed_display_rows.into_iter() {
2221 blame_element.paint(cx);
2222 }
2223 })
2224 }
2225
2226 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2227 cx.with_content_mask(
2228 Some(ContentMask {
2229 bounds: layout.text_hitbox.bounds,
2230 }),
2231 |cx| {
2232 let cursor_style = if self
2233 .editor
2234 .read(cx)
2235 .hovered_link_state
2236 .as_ref()
2237 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
2238 {
2239 CursorStyle::PointingHand
2240 } else {
2241 CursorStyle::IBeam
2242 };
2243 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
2244
2245 cx.with_element_id(Some("folds"), |cx| self.paint_folds(layout, cx));
2246 let invisible_display_ranges = self.paint_highlights(layout, cx);
2247 self.paint_lines(&invisible_display_ranges, layout, cx);
2248 self.paint_redactions(layout, cx);
2249 self.paint_cursors(layout, cx);
2250 },
2251 )
2252 }
2253
2254 fn paint_highlights(
2255 &mut self,
2256 layout: &mut EditorLayout,
2257 cx: &mut ElementContext,
2258 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
2259 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2260 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
2261 let line_end_overshoot = 0.15 * layout.position_map.line_height;
2262 for (range, color) in &layout.highlighted_ranges {
2263 self.paint_highlighted_range(
2264 range.clone(),
2265 *color,
2266 Pixels::ZERO,
2267 line_end_overshoot,
2268 layout,
2269 cx,
2270 );
2271 }
2272
2273 let corner_radius = 0.15 * layout.position_map.line_height;
2274
2275 for (player_color, selections) in &layout.selections {
2276 for selection in selections.into_iter() {
2277 self.paint_highlighted_range(
2278 selection.range.clone(),
2279 player_color.selection,
2280 corner_radius,
2281 corner_radius * 2.,
2282 layout,
2283 cx,
2284 );
2285
2286 if selection.is_local && !selection.range.is_empty() {
2287 invisible_display_ranges.push(selection.range.clone());
2288 }
2289 }
2290 }
2291 invisible_display_ranges
2292 })
2293 }
2294
2295 fn paint_lines(
2296 &mut self,
2297 invisible_display_ranges: &[Range<DisplayPoint>],
2298 layout: &EditorLayout,
2299 cx: &mut ElementContext,
2300 ) {
2301 let whitespace_setting = self
2302 .editor
2303 .read(cx)
2304 .buffer
2305 .read(cx)
2306 .settings_at(0, cx)
2307 .show_whitespaces;
2308
2309 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
2310 let row = layout.visible_display_row_range.start + ix as u32;
2311 line_with_invisibles.draw(
2312 layout,
2313 row,
2314 layout.content_origin,
2315 whitespace_setting,
2316 invisible_display_ranges,
2317 cx,
2318 )
2319 }
2320 }
2321
2322 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2323 if layout.redacted_ranges.is_empty() {
2324 return;
2325 }
2326
2327 let line_end_overshoot = layout.line_end_overshoot();
2328
2329 // A softer than perfect black
2330 let redaction_color = gpui::rgb(0x0e1111);
2331
2332 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2333 for range in layout.redacted_ranges.iter() {
2334 self.paint_highlighted_range(
2335 range.clone(),
2336 redaction_color.into(),
2337 Pixels::ZERO,
2338 line_end_overshoot,
2339 layout,
2340 cx,
2341 );
2342 }
2343 });
2344 }
2345
2346 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2347 for cursor in &mut layout.cursors {
2348 cursor.paint(layout.content_origin, cx);
2349 }
2350 }
2351
2352 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2353 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
2354 return;
2355 };
2356
2357 let thumb_bounds = scrollbar_layout.thumb_bounds();
2358 if scrollbar_layout.visible {
2359 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
2360 cx.paint_quad(quad(
2361 scrollbar_layout.hitbox.bounds,
2362 Corners::default(),
2363 cx.theme().colors().scrollbar_track_background,
2364 Edges {
2365 top: Pixels::ZERO,
2366 right: Pixels::ZERO,
2367 bottom: Pixels::ZERO,
2368 left: ScrollbarLayout::BORDER_WIDTH,
2369 },
2370 cx.theme().colors().scrollbar_track_border,
2371 ));
2372 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2373 let is_singleton = self.editor.read(cx).is_singleton(cx);
2374 let left = scrollbar_layout.hitbox.left();
2375 let right = scrollbar_layout.hitbox.right();
2376 let column_width =
2377 px(((right - left - ScrollbarLayout::BORDER_WIDTH).0 / 3.0).floor());
2378 if is_singleton && scrollbar_settings.selections {
2379 let start_anchor = Anchor::min();
2380 let end_anchor = Anchor::max();
2381 let background_ranges = self
2382 .editor
2383 .read(cx)
2384 .background_highlight_row_ranges::<BufferSearchHighlights>(
2385 start_anchor..end_anchor,
2386 &layout.position_map.snapshot,
2387 50000,
2388 );
2389 let left_x = left + ScrollbarLayout::BORDER_WIDTH + column_width;
2390 let right_x = left_x + column_width;
2391 for range in background_ranges {
2392 let (start_y, end_y) =
2393 scrollbar_layout.ys_for_marker(range.start().row(), range.end().row());
2394 let bounds =
2395 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2396 cx.paint_quad(quad(
2397 bounds,
2398 Corners::default(),
2399 cx.theme().status().info,
2400 Edges::default(),
2401 cx.theme().colors().scrollbar_thumb_border,
2402 ));
2403 }
2404 }
2405
2406 if is_singleton && scrollbar_settings.symbols_selections {
2407 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
2408 Anchor::min()..Anchor::max(),
2409 &layout.position_map.snapshot,
2410 cx.theme().colors(),
2411 );
2412 let left_x = left + ScrollbarLayout::BORDER_WIDTH + column_width;
2413 let right_x = left_x + column_width;
2414 for hunk in selection_ranges {
2415 let start_display = Point::new(hunk.0.start.row(), 0)
2416 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2417 let end_display = Point::new(hunk.0.end.row(), 0)
2418 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2419 let (start_y, end_y) =
2420 scrollbar_layout.ys_for_marker(start_display.row(), end_display.row());
2421 let bounds =
2422 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2423 cx.paint_quad(quad(
2424 bounds,
2425 Corners::default(),
2426 cx.theme().status().info,
2427 Edges::default(),
2428 cx.theme().colors().scrollbar_thumb_border,
2429 ));
2430 }
2431 }
2432
2433 if is_singleton && scrollbar_settings.git_diff {
2434 let left_x = left + ScrollbarLayout::BORDER_WIDTH;
2435 let right_x = left_x + column_width;
2436 for hunk in layout
2437 .position_map
2438 .snapshot
2439 .buffer_snapshot
2440 .git_diff_hunks_in_range(0..layout.max_row)
2441 {
2442 let start_display_row = Point::new(hunk.associated_range.start, 0)
2443 .to_display_point(&layout.position_map.snapshot.display_snapshot)
2444 .row();
2445 let mut end_display_row = Point::new(hunk.associated_range.end, 0)
2446 .to_display_point(&layout.position_map.snapshot.display_snapshot)
2447 .row();
2448 if end_display_row != start_display_row {
2449 end_display_row -= 1;
2450 }
2451 let (start_y, end_y) =
2452 scrollbar_layout.ys_for_marker(start_display_row, end_display_row);
2453 let bounds =
2454 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2455 let color = match hunk.status() {
2456 DiffHunkStatus::Added => cx.theme().status().created,
2457 DiffHunkStatus::Modified => cx.theme().status().modified,
2458 DiffHunkStatus::Removed => cx.theme().status().deleted,
2459 };
2460 cx.paint_quad(quad(
2461 bounds,
2462 Corners::default(),
2463 color,
2464 Edges::default(),
2465 cx.theme().colors().scrollbar_thumb_border,
2466 ));
2467 }
2468 }
2469
2470 if is_singleton && scrollbar_settings.diagnostics {
2471 let max_point = layout
2472 .position_map
2473 .snapshot
2474 .display_snapshot
2475 .buffer_snapshot
2476 .max_point();
2477
2478 let diagnostics = layout
2479 .position_map
2480 .snapshot
2481 .buffer_snapshot
2482 .diagnostics_in_range::<_, Point>(Point::zero()..max_point, false)
2483 // We want to sort by severity, in order to paint the most severe diagnostics last.
2484 .sorted_by_key(|diagnostic| {
2485 std::cmp::Reverse(diagnostic.diagnostic.severity)
2486 });
2487
2488 let left_x = left + ScrollbarLayout::BORDER_WIDTH + 2.0 * column_width;
2489 for diagnostic in diagnostics {
2490 let start_display = diagnostic
2491 .range
2492 .start
2493 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2494 let end_display = diagnostic
2495 .range
2496 .end
2497 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2498 let (start_y, end_y) =
2499 scrollbar_layout.ys_for_marker(start_display.row(), end_display.row());
2500 let bounds =
2501 Bounds::from_corners(point(left_x, start_y), point(right, end_y));
2502 let color = match diagnostic.diagnostic.severity {
2503 DiagnosticSeverity::ERROR => cx.theme().status().error,
2504 DiagnosticSeverity::WARNING => cx.theme().status().warning,
2505 DiagnosticSeverity::INFORMATION => cx.theme().status().info,
2506 _ => cx.theme().status().hint,
2507 };
2508 cx.paint_quad(quad(
2509 bounds,
2510 Corners::default(),
2511 color,
2512 Edges::default(),
2513 cx.theme().colors().scrollbar_thumb_border,
2514 ));
2515 }
2516 }
2517
2518 cx.paint_quad(quad(
2519 thumb_bounds,
2520 Corners::default(),
2521 cx.theme().colors().scrollbar_thumb_background,
2522 Edges {
2523 top: Pixels::ZERO,
2524 right: Pixels::ZERO,
2525 bottom: Pixels::ZERO,
2526 left: ScrollbarLayout::BORDER_WIDTH,
2527 },
2528 cx.theme().colors().scrollbar_thumb_border,
2529 ));
2530 });
2531 }
2532
2533 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
2534
2535 let scroll_height = scrollbar_layout.scroll_height;
2536 let height = scrollbar_layout.height;
2537 let row_range = scrollbar_layout.visible_row_range.clone();
2538
2539 cx.on_mouse_event({
2540 let editor = self.editor.clone();
2541 let hitbox = scrollbar_layout.hitbox.clone();
2542 let mut mouse_position = cx.mouse_position();
2543 move |event: &MouseMoveEvent, phase, cx| {
2544 if phase == DispatchPhase::Capture {
2545 return;
2546 }
2547
2548 editor.update(cx, |editor, cx| {
2549 if event.pressed_button == Some(MouseButton::Left)
2550 && editor.scroll_manager.is_dragging_scrollbar()
2551 {
2552 let y = mouse_position.y;
2553 let new_y = event.position.y;
2554 if (hitbox.top()..hitbox.bottom()).contains(&y) {
2555 let mut position = editor.scroll_position(cx);
2556 position.y += (new_y - y) * scroll_height / height;
2557 if position.y < 0.0 {
2558 position.y = 0.0;
2559 }
2560 editor.set_scroll_position(position, cx);
2561 }
2562
2563 mouse_position = event.position;
2564 cx.stop_propagation();
2565 } else {
2566 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2567 if hitbox.is_hovered(cx) {
2568 editor.scroll_manager.show_scrollbar(cx);
2569 }
2570 }
2571 })
2572 }
2573 });
2574
2575 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
2576 cx.on_mouse_event({
2577 let editor = self.editor.clone();
2578 move |_: &MouseUpEvent, phase, cx| {
2579 if phase == DispatchPhase::Capture {
2580 return;
2581 }
2582
2583 editor.update(cx, |editor, cx| {
2584 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2585 cx.stop_propagation();
2586 });
2587 }
2588 });
2589 } else {
2590 cx.on_mouse_event({
2591 let editor = self.editor.clone();
2592 let hitbox = scrollbar_layout.hitbox.clone();
2593 move |event: &MouseDownEvent, phase, cx| {
2594 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
2595 return;
2596 }
2597
2598 editor.update(cx, |editor, cx| {
2599 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
2600
2601 let y = event.position.y;
2602 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
2603 let center_row =
2604 ((y - hitbox.top()) * scroll_height / height).round() as u32;
2605 let top_row = center_row
2606 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
2607 let mut position = editor.scroll_position(cx);
2608 position.y = top_row as f32;
2609 editor.set_scroll_position(position, cx);
2610 } else {
2611 editor.scroll_manager.show_scrollbar(cx);
2612 }
2613
2614 cx.stop_propagation();
2615 });
2616 }
2617 });
2618 }
2619 }
2620
2621 #[allow(clippy::too_many_arguments)]
2622 fn paint_highlighted_range(
2623 &self,
2624 range: Range<DisplayPoint>,
2625 color: Hsla,
2626 corner_radius: Pixels,
2627 line_end_overshoot: Pixels,
2628 layout: &EditorLayout,
2629 cx: &mut ElementContext,
2630 ) {
2631 let start_row = layout.visible_display_row_range.start;
2632 let end_row = layout.visible_display_row_range.end;
2633 if range.start != range.end {
2634 let row_range = if range.end.column() == 0 {
2635 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
2636 } else {
2637 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
2638 };
2639
2640 let highlighted_range = HighlightedRange {
2641 color,
2642 line_height: layout.position_map.line_height,
2643 corner_radius,
2644 start_y: layout.content_origin.y
2645 + row_range.start as f32 * layout.position_map.line_height
2646 - layout.position_map.scroll_pixel_position.y,
2647 lines: row_range
2648 .into_iter()
2649 .map(|row| {
2650 let line_layout =
2651 &layout.position_map.line_layouts[(row - start_row) as usize].line;
2652 HighlightedRangeLine {
2653 start_x: if row == range.start.row() {
2654 layout.content_origin.x
2655 + line_layout.x_for_index(range.start.column() as usize)
2656 - layout.position_map.scroll_pixel_position.x
2657 } else {
2658 layout.content_origin.x
2659 - layout.position_map.scroll_pixel_position.x
2660 },
2661 end_x: if row == range.end.row() {
2662 layout.content_origin.x
2663 + line_layout.x_for_index(range.end.column() as usize)
2664 - layout.position_map.scroll_pixel_position.x
2665 } else {
2666 layout.content_origin.x + line_layout.width + line_end_overshoot
2667 - layout.position_map.scroll_pixel_position.x
2668 },
2669 }
2670 })
2671 .collect(),
2672 };
2673
2674 highlighted_range.paint(layout.text_hitbox.bounds, cx);
2675 }
2676 }
2677
2678 fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2679 if layout.folds.is_empty() {
2680 return;
2681 }
2682
2683 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2684 let fold_corner_radius = 0.15 * layout.position_map.line_height;
2685 for mut fold in mem::take(&mut layout.folds) {
2686 fold.hover_element.paint(cx);
2687
2688 let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
2689 let fold_background = if hover_element.interactivity().active.unwrap() {
2690 cx.theme().colors().ghost_element_active
2691 } else if hover_element.interactivity().hovered.unwrap() {
2692 cx.theme().colors().ghost_element_hover
2693 } else {
2694 cx.theme().colors().ghost_element_background
2695 };
2696
2697 self.paint_highlighted_range(
2698 fold.display_range.clone(),
2699 fold_background,
2700 fold_corner_radius,
2701 fold_corner_radius * 2.,
2702 layout,
2703 cx,
2704 );
2705 }
2706 })
2707 }
2708
2709 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2710 for mut block in layout.blocks.drain(..) {
2711 block.element.paint(cx);
2712 }
2713 }
2714
2715 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2716 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
2717 mouse_context_menu.paint(cx);
2718 }
2719 }
2720
2721 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2722 cx.on_mouse_event({
2723 let position_map = layout.position_map.clone();
2724 let editor = self.editor.clone();
2725 let hitbox = layout.hitbox.clone();
2726 let mut delta = ScrollDelta::default();
2727
2728 move |event: &ScrollWheelEvent, phase, cx| {
2729 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
2730 delta = delta.coalesce(event.delta);
2731 editor.update(cx, |editor, cx| {
2732 let position_map: &PositionMap = &position_map;
2733
2734 let line_height = position_map.line_height;
2735 let max_glyph_width = position_map.em_width;
2736 let (delta, axis) = match delta {
2737 gpui::ScrollDelta::Pixels(mut pixels) => {
2738 //Trackpad
2739 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2740 (pixels, axis)
2741 }
2742
2743 gpui::ScrollDelta::Lines(lines) => {
2744 //Not trackpad
2745 let pixels =
2746 point(lines.x * max_glyph_width, lines.y * line_height);
2747 (pixels, None)
2748 }
2749 };
2750
2751 let scroll_position = position_map.snapshot.scroll_position();
2752 let x = (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width;
2753 let y = (scroll_position.y * line_height - delta.y) / line_height;
2754 let scroll_position =
2755 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2756 editor.scroll(scroll_position, axis, cx);
2757 cx.stop_propagation();
2758 });
2759 }
2760 }
2761 });
2762 }
2763
2764 fn paint_mouse_listeners(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2765 self.paint_scroll_wheel_listener(layout, cx);
2766
2767 cx.on_mouse_event({
2768 let position_map = layout.position_map.clone();
2769 let editor = self.editor.clone();
2770 let text_hitbox = layout.text_hitbox.clone();
2771 let gutter_hitbox = layout.gutter_hitbox.clone();
2772
2773 move |event: &MouseDownEvent, phase, cx| {
2774 if phase == DispatchPhase::Bubble {
2775 match event.button {
2776 MouseButton::Left => editor.update(cx, |editor, cx| {
2777 Self::mouse_left_down(
2778 editor,
2779 event,
2780 &position_map,
2781 &text_hitbox,
2782 &gutter_hitbox,
2783 cx,
2784 );
2785 }),
2786 MouseButton::Right => editor.update(cx, |editor, cx| {
2787 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
2788 }),
2789 _ => {}
2790 };
2791 }
2792 }
2793 });
2794
2795 cx.on_mouse_event({
2796 let editor = self.editor.clone();
2797 let position_map = layout.position_map.clone();
2798 let text_hitbox = layout.text_hitbox.clone();
2799
2800 move |event: &MouseUpEvent, phase, cx| {
2801 if phase == DispatchPhase::Bubble {
2802 editor.update(cx, |editor, cx| {
2803 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
2804 });
2805 }
2806 }
2807 });
2808 cx.on_mouse_event({
2809 let position_map = layout.position_map.clone();
2810 let editor = self.editor.clone();
2811 let text_hitbox = layout.text_hitbox.clone();
2812 let gutter_hitbox = layout.gutter_hitbox.clone();
2813
2814 move |event: &MouseMoveEvent, phase, cx| {
2815 if phase == DispatchPhase::Bubble {
2816 editor.update(cx, |editor, cx| {
2817 if event.pressed_button == Some(MouseButton::Left) {
2818 Self::mouse_dragged(
2819 editor,
2820 event,
2821 &position_map,
2822 text_hitbox.bounds,
2823 cx,
2824 )
2825 }
2826
2827 Self::mouse_moved(
2828 editor,
2829 event,
2830 &position_map,
2831 &text_hitbox,
2832 &gutter_hitbox,
2833 cx,
2834 )
2835 });
2836 }
2837 }
2838 });
2839 }
2840
2841 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
2842 bounds.upper_right().x - self.style.scrollbar_width
2843 }
2844
2845 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
2846 let style = &self.style;
2847 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2848 let layout = cx
2849 .text_system()
2850 .shape_line(
2851 SharedString::from(" ".repeat(column)),
2852 font_size,
2853 &[TextRun {
2854 len: column,
2855 font: style.text.font(),
2856 color: Hsla::default(),
2857 background_color: None,
2858 underline: None,
2859 strikethrough: None,
2860 }],
2861 )
2862 .unwrap();
2863
2864 layout.width
2865 }
2866
2867 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
2868 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
2869 self.column_pixels(digit_count, cx)
2870 }
2871}
2872
2873fn render_blame_entry(
2874 ix: usize,
2875 blame: &gpui::Model<GitBlame>,
2876 blame_entry: BlameEntry,
2877 text_style: &TextStyle,
2878 last_used_color: &mut Option<(PlayerColor, Oid)>,
2879 editor: View<Editor>,
2880 cx: &mut ElementContext<'_>,
2881) -> AnyElement {
2882 let mut sha_color = cx
2883 .theme()
2884 .players()
2885 .color_for_participant(blame_entry.sha.into());
2886 // If the last color we used is the same as the one we get for this line, but
2887 // the commit SHAs are different, then we try again to get a different color.
2888 match *last_used_color {
2889 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
2890 let index: u32 = blame_entry.sha.into();
2891 sha_color = cx.theme().players().color_for_participant(index + 1);
2892 }
2893 _ => {}
2894 };
2895 last_used_color.replace((sha_color, blame_entry.sha));
2896
2897 let relative_timestamp = match blame_entry.author_offset_date_time() {
2898 Ok(timestamp) => time_format::format_localized_timestamp(
2899 timestamp,
2900 time::OffsetDateTime::now_utc(),
2901 cx.local_timezone(),
2902 time_format::TimestampFormat::Relative,
2903 ),
2904 Err(_) => "Error parsing date".to_string(),
2905 };
2906
2907 let pretty_commit_id = format!("{}", blame_entry.sha);
2908 let short_commit_id = pretty_commit_id.clone().chars().take(6).collect::<String>();
2909
2910 let name = blame_entry.author.as_deref().unwrap_or("<no name>");
2911 let name = if name.len() > 20 {
2912 format!("{}...", &name[..16])
2913 } else {
2914 name.to_string()
2915 };
2916
2917 let permalink = blame.read(cx).permalink_for_entry(&blame_entry);
2918 let commit_message = blame.read(cx).message_for_entry(&blame_entry);
2919
2920 h_flex()
2921 .font(text_style.font().family)
2922 .line_height(text_style.line_height)
2923 .id(("blame", ix))
2924 .children([
2925 div()
2926 .text_color(sha_color.cursor)
2927 .child(short_commit_id)
2928 .mr_2(),
2929 div()
2930 .text_color(cx.theme().status().hint)
2931 .child(format!("{:20} {: >14}", name, relative_timestamp)),
2932 ])
2933 .on_mouse_down(MouseButton::Right, {
2934 let blame_entry = blame_entry.clone();
2935 move |event, cx| {
2936 deploy_blame_entry_context_menu(&blame_entry, editor.clone(), event.position, cx);
2937 }
2938 })
2939 .hover(|style| style.bg(cx.theme().colors().element_hover))
2940 .when_some(permalink, |this, url| {
2941 let url = url.clone();
2942 this.cursor_pointer().on_click(move |_, cx| {
2943 cx.stop_propagation();
2944 cx.open_url(url.as_str())
2945 })
2946 })
2947 .tooltip(move |cx| {
2948 BlameEntryTooltip::new(
2949 sha_color.cursor,
2950 commit_message.clone(),
2951 blame_entry.clone(),
2952 cx,
2953 )
2954 })
2955 .into_any()
2956}
2957
2958fn deploy_blame_entry_context_menu(
2959 blame_entry: &BlameEntry,
2960 editor: View<Editor>,
2961 position: gpui::Point<Pixels>,
2962 cx: &mut WindowContext<'_>,
2963) {
2964 let context_menu = ContextMenu::build(cx, move |this, _| {
2965 let sha = format!("{}", blame_entry.sha);
2966 this.entry("Copy commit SHA", None, move |cx| {
2967 cx.write_to_clipboard(ClipboardItem::new(sha.clone()));
2968 })
2969 });
2970
2971 editor.update(cx, move |editor, cx| {
2972 editor.mouse_context_menu = Some(MouseContextMenu::new(position, context_menu, cx));
2973 cx.notify();
2974 });
2975}
2976
2977struct BlameEntryTooltip {
2978 color: Hsla,
2979 commit_message: Option<String>,
2980 blame_entry: BlameEntry,
2981}
2982
2983impl BlameEntryTooltip {
2984 fn new(
2985 color: Hsla,
2986 commit_message: Option<String>,
2987 blame_entry: BlameEntry,
2988 cx: &mut WindowContext,
2989 ) -> AnyView {
2990 cx.new_view(|_cx| Self {
2991 color,
2992 commit_message,
2993 blame_entry,
2994 })
2995 .into()
2996 }
2997}
2998
2999impl Render for BlameEntryTooltip {
3000 fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
3001 let author = self
3002 .blame_entry
3003 .author
3004 .clone()
3005 .unwrap_or("<no name>".to_string());
3006 let author_email = self.blame_entry.author_mail.clone().unwrap_or_default();
3007 let absolute_timestamp = match self.blame_entry.author_offset_date_time() {
3008 Ok(timestamp) => time_format::format_localized_timestamp(
3009 timestamp,
3010 time::OffsetDateTime::now_utc(),
3011 cx.local_timezone(),
3012 time_format::TimestampFormat::Absolute,
3013 ),
3014 Err(_) => "Error parsing date".to_string(),
3015 };
3016
3017 let message = match &self.commit_message {
3018 Some(message) => util::truncate_lines_and_trailoff(message, 15),
3019 None => self.blame_entry.summary.clone().unwrap_or_default(),
3020 };
3021
3022 let pretty_commit_id = format!("{}", self.blame_entry.sha);
3023
3024 tooltip_container(cx, move |this, cx| {
3025 this.occlude()
3026 .on_mouse_move(|_, cx| cx.stop_propagation())
3027 .child(
3028 v_flex()
3029 .child(
3030 h_flex()
3031 .child(
3032 div()
3033 .text_color(cx.theme().colors().text_muted)
3034 .child("Commit")
3035 .pr_2(),
3036 )
3037 .child(
3038 div().text_color(self.color).child(pretty_commit_id.clone()),
3039 ),
3040 )
3041 .child(
3042 div()
3043 .child(format!(
3044 "{} {} - {}",
3045 author, author_email, absolute_timestamp
3046 ))
3047 .text_color(cx.theme().colors().text_muted),
3048 )
3049 .child(div().child(message)),
3050 )
3051 })
3052 }
3053}
3054
3055#[derive(Debug)]
3056pub(crate) struct LineWithInvisibles {
3057 pub line: ShapedLine,
3058 invisibles: Vec<Invisible>,
3059}
3060
3061impl LineWithInvisibles {
3062 fn from_chunks<'a>(
3063 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
3064 text_style: &TextStyle,
3065 max_line_len: usize,
3066 max_line_count: usize,
3067 line_number_layouts: &[Option<ShapedLine>],
3068 editor_mode: EditorMode,
3069 cx: &WindowContext,
3070 ) -> Vec<Self> {
3071 let mut layouts = Vec::with_capacity(max_line_count);
3072 let mut line = String::new();
3073 let mut invisibles = Vec::new();
3074 let mut styles = Vec::new();
3075 let mut non_whitespace_added = false;
3076 let mut row = 0;
3077 let mut line_exceeded_max_len = false;
3078 let font_size = text_style.font_size.to_pixels(cx.rem_size());
3079
3080 for highlighted_chunk in chunks.chain([HighlightedChunk {
3081 chunk: "\n",
3082 style: None,
3083 is_tab: false,
3084 }]) {
3085 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
3086 if ix > 0 {
3087 let shaped_line = cx
3088 .text_system()
3089 .shape_line(line.clone().into(), font_size, &styles)
3090 .unwrap();
3091 layouts.push(Self {
3092 line: shaped_line,
3093 invisibles: std::mem::take(&mut invisibles),
3094 });
3095
3096 line.clear();
3097 styles.clear();
3098 row += 1;
3099 line_exceeded_max_len = false;
3100 non_whitespace_added = false;
3101 if row == max_line_count {
3102 return layouts;
3103 }
3104 }
3105
3106 if !line_chunk.is_empty() && !line_exceeded_max_len {
3107 let text_style = if let Some(style) = highlighted_chunk.style {
3108 Cow::Owned(text_style.clone().highlight(style))
3109 } else {
3110 Cow::Borrowed(text_style)
3111 };
3112
3113 if line.len() + line_chunk.len() > max_line_len {
3114 let mut chunk_len = max_line_len - line.len();
3115 while !line_chunk.is_char_boundary(chunk_len) {
3116 chunk_len -= 1;
3117 }
3118 line_chunk = &line_chunk[..chunk_len];
3119 line_exceeded_max_len = true;
3120 }
3121
3122 styles.push(TextRun {
3123 len: line_chunk.len(),
3124 font: text_style.font(),
3125 color: text_style.color,
3126 background_color: text_style.background_color,
3127 underline: text_style.underline,
3128 strikethrough: text_style.strikethrough,
3129 });
3130
3131 if editor_mode == EditorMode::Full {
3132 // Line wrap pads its contents with fake whitespaces,
3133 // avoid printing them
3134 let inside_wrapped_string = line_number_layouts
3135 .get(row)
3136 .and_then(|layout| layout.as_ref())
3137 .is_none();
3138 if highlighted_chunk.is_tab {
3139 if non_whitespace_added || !inside_wrapped_string {
3140 invisibles.push(Invisible::Tab {
3141 line_start_offset: line.len(),
3142 });
3143 }
3144 } else {
3145 invisibles.extend(
3146 line_chunk
3147 .chars()
3148 .enumerate()
3149 .filter(|(_, line_char)| {
3150 let is_whitespace = line_char.is_whitespace();
3151 non_whitespace_added |= !is_whitespace;
3152 is_whitespace
3153 && (non_whitespace_added || !inside_wrapped_string)
3154 })
3155 .map(|(whitespace_index, _)| Invisible::Whitespace {
3156 line_offset: line.len() + whitespace_index,
3157 }),
3158 )
3159 }
3160 }
3161
3162 line.push_str(line_chunk);
3163 }
3164 }
3165 }
3166
3167 layouts
3168 }
3169
3170 fn draw(
3171 &self,
3172 layout: &EditorLayout,
3173 row: u32,
3174 content_origin: gpui::Point<Pixels>,
3175 whitespace_setting: ShowWhitespaceSetting,
3176 selection_ranges: &[Range<DisplayPoint>],
3177 cx: &mut ElementContext,
3178 ) {
3179 let line_height = layout.position_map.line_height;
3180 let line_y =
3181 line_height * (row as f32 - layout.position_map.scroll_pixel_position.y / line_height);
3182
3183 self.line
3184 .paint(
3185 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y),
3186 line_height,
3187 cx,
3188 )
3189 .log_err();
3190
3191 self.draw_invisibles(
3192 &selection_ranges,
3193 layout,
3194 content_origin,
3195 line_y,
3196 row,
3197 line_height,
3198 whitespace_setting,
3199 cx,
3200 );
3201 }
3202
3203 #[allow(clippy::too_many_arguments)]
3204 fn draw_invisibles(
3205 &self,
3206 selection_ranges: &[Range<DisplayPoint>],
3207 layout: &EditorLayout,
3208 content_origin: gpui::Point<Pixels>,
3209 line_y: Pixels,
3210 row: u32,
3211 line_height: Pixels,
3212 whitespace_setting: ShowWhitespaceSetting,
3213 cx: &mut ElementContext,
3214 ) {
3215 let allowed_invisibles_regions = match whitespace_setting {
3216 ShowWhitespaceSetting::None => return,
3217 ShowWhitespaceSetting::Selection => Some(selection_ranges),
3218 ShowWhitespaceSetting::All => None,
3219 };
3220
3221 for invisible in &self.invisibles {
3222 let (&token_offset, invisible_symbol) = match invisible {
3223 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
3224 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
3225 };
3226
3227 let x_offset = self.line.x_for_index(token_offset);
3228 let invisible_offset =
3229 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
3230 let origin = content_origin
3231 + gpui::point(
3232 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
3233 line_y,
3234 );
3235
3236 if let Some(allowed_regions) = allowed_invisibles_regions {
3237 let invisible_point = DisplayPoint::new(row, token_offset as u32);
3238 if !allowed_regions
3239 .iter()
3240 .any(|region| region.start <= invisible_point && invisible_point < region.end)
3241 {
3242 continue;
3243 }
3244 }
3245 invisible_symbol.paint(origin, line_height, cx).log_err();
3246 }
3247 }
3248}
3249
3250#[derive(Debug, Clone, Copy, PartialEq, Eq)]
3251enum Invisible {
3252 Tab { line_start_offset: usize },
3253 Whitespace { line_offset: usize },
3254}
3255
3256impl Element for EditorElement {
3257 type BeforeLayout = ();
3258 type AfterLayout = EditorLayout;
3259
3260 fn before_layout(&mut self, cx: &mut ElementContext) -> (gpui::LayoutId, ()) {
3261 self.editor.update(cx, |editor, cx| {
3262 editor.set_style(self.style.clone(), cx);
3263
3264 let layout_id = match editor.mode {
3265 EditorMode::SingleLine => {
3266 let rem_size = cx.rem_size();
3267 let mut style = Style::default();
3268 style.size.width = relative(1.).into();
3269 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
3270 cx.with_element_context(|cx| cx.request_layout(&style, None))
3271 }
3272 EditorMode::AutoHeight { max_lines } => {
3273 let editor_handle = cx.view().clone();
3274 let max_line_number_width =
3275 self.max_line_number_width(&editor.snapshot(cx), cx);
3276 cx.with_element_context(|cx| {
3277 cx.request_measured_layout(
3278 Style::default(),
3279 move |known_dimensions, _, cx| {
3280 editor_handle
3281 .update(cx, |editor, cx| {
3282 compute_auto_height_layout(
3283 editor,
3284 max_lines,
3285 max_line_number_width,
3286 known_dimensions,
3287 cx,
3288 )
3289 })
3290 .unwrap_or_default()
3291 },
3292 )
3293 })
3294 }
3295 EditorMode::Full => {
3296 let mut style = Style::default();
3297 style.size.width = relative(1.).into();
3298 style.size.height = relative(1.).into();
3299 cx.with_element_context(|cx| cx.request_layout(&style, None))
3300 }
3301 };
3302
3303 (layout_id, ())
3304 })
3305 }
3306
3307 fn after_layout(
3308 &mut self,
3309 bounds: Bounds<Pixels>,
3310 _: &mut Self::BeforeLayout,
3311 cx: &mut ElementContext,
3312 ) -> Self::AfterLayout {
3313 let text_style = TextStyleRefinement {
3314 font_size: Some(self.style.text.font_size),
3315 line_height: Some(self.style.text.line_height),
3316 ..Default::default()
3317 };
3318 cx.with_text_style(Some(text_style), |cx| {
3319 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3320 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
3321 let style = self.style.clone();
3322
3323 let font_id = cx.text_system().resolve_font(&style.text.font());
3324 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3325 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3326 let em_width = cx
3327 .text_system()
3328 .typographic_bounds(font_id, font_size, 'm')
3329 .unwrap()
3330 .size
3331 .width;
3332 let em_advance = cx
3333 .text_system()
3334 .advance(font_id, font_size, 'm')
3335 .unwrap()
3336 .width;
3337
3338 let gutter_dimensions = snapshot.gutter_dimensions(
3339 font_id,
3340 font_size,
3341 em_width,
3342 self.max_line_number_width(&snapshot, cx),
3343 cx,
3344 );
3345 let text_width = bounds.size.width - gutter_dimensions.width;
3346 let overscroll = size(em_width, px(0.));
3347
3348 snapshot = self.editor.update(cx, |editor, cx| {
3349 editor.gutter_width = gutter_dimensions.width;
3350 editor.set_visible_line_count(bounds.size.height / line_height, cx);
3351
3352 let editor_width =
3353 text_width - gutter_dimensions.margin - overscroll.width - em_width;
3354 let wrap_width = match editor.soft_wrap_mode(cx) {
3355 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
3356 SoftWrap::EditorWidth => editor_width,
3357 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
3358 };
3359
3360 if editor.set_wrap_width(Some(wrap_width), cx) {
3361 editor.snapshot(cx)
3362 } else {
3363 snapshot
3364 }
3365 });
3366
3367 let wrap_guides = self
3368 .editor
3369 .read(cx)
3370 .wrap_guides(cx)
3371 .iter()
3372 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
3373 .collect::<SmallVec<[_; 2]>>();
3374
3375 let hitbox = cx.insert_hitbox(bounds, false);
3376 let gutter_hitbox = cx.insert_hitbox(
3377 Bounds {
3378 origin: bounds.origin,
3379 size: size(gutter_dimensions.width, bounds.size.height),
3380 },
3381 false,
3382 );
3383 let text_hitbox = cx.insert_hitbox(
3384 Bounds {
3385 origin: gutter_hitbox.upper_right(),
3386 size: size(text_width, bounds.size.height),
3387 },
3388 false,
3389 );
3390 // Offset the content_bounds from the text_bounds by the gutter margin (which
3391 // is roughly half a character wide) to make hit testing work more like how we want.
3392 let content_origin =
3393 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
3394
3395 let autoscroll_horizontally = self.editor.update(cx, |editor, cx| {
3396 let autoscroll_horizontally =
3397 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
3398 snapshot = editor.snapshot(cx);
3399 autoscroll_horizontally
3400 });
3401
3402 let mut scroll_position = snapshot.scroll_position();
3403 // The scroll position is a fractional point, the whole number of which represents
3404 // the top of the window in terms of display rows.
3405 let start_row = scroll_position.y as u32;
3406 let height_in_lines = bounds.size.height / line_height;
3407 let max_row = snapshot.max_point().row();
3408
3409 // Add 1 to ensure selections bleed off screen
3410 let end_row =
3411 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
3412
3413 let buffer_rows = snapshot
3414 .buffer_rows(start_row)
3415 .take((start_row..end_row).len());
3416
3417 let start_anchor = if start_row == 0 {
3418 Anchor::min()
3419 } else {
3420 snapshot.buffer_snapshot.anchor_before(
3421 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
3422 )
3423 };
3424 let end_anchor = if end_row > max_row {
3425 Anchor::max()
3426 } else {
3427 snapshot.buffer_snapshot.anchor_before(
3428 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
3429 )
3430 };
3431
3432 let highlighted_rows = self
3433 .editor
3434 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
3435 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
3436 start_anchor..end_anchor,
3437 &snapshot.display_snapshot,
3438 cx.theme().colors(),
3439 );
3440
3441 let redacted_ranges = self.editor.read(cx).redacted_ranges(
3442 start_anchor..end_anchor,
3443 &snapshot.display_snapshot,
3444 cx,
3445 );
3446
3447 let (selections, active_rows, newest_selection_head) = self.layout_selections(
3448 start_anchor,
3449 end_anchor,
3450 &snapshot,
3451 start_row,
3452 end_row,
3453 cx,
3454 );
3455
3456 let (line_numbers, fold_statuses) = self.layout_line_numbers(
3457 start_row..end_row,
3458 buffer_rows.clone(),
3459 &active_rows,
3460 newest_selection_head,
3461 &snapshot,
3462 cx,
3463 );
3464
3465 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
3466
3467 let blamed_display_rows = self.layout_blame_entries(
3468 buffer_rows,
3469 em_width,
3470 scroll_position,
3471 line_height,
3472 &gutter_hitbox,
3473 gutter_dimensions.git_blame_entries_width,
3474 cx,
3475 );
3476
3477 let mut max_visible_line_width = Pixels::ZERO;
3478 let line_layouts =
3479 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
3480 for line_with_invisibles in &line_layouts {
3481 if line_with_invisibles.line.width > max_visible_line_width {
3482 max_visible_line_width = line_with_invisibles.line.width;
3483 }
3484 }
3485
3486 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
3487 .unwrap()
3488 .width;
3489 let mut scroll_width =
3490 longest_line_width.max(max_visible_line_width) + overscroll.width;
3491 let mut blocks = self.build_blocks(
3492 start_row..end_row,
3493 &snapshot,
3494 &hitbox,
3495 &text_hitbox,
3496 &mut scroll_width,
3497 &gutter_dimensions,
3498 em_width,
3499 gutter_dimensions.width + gutter_dimensions.margin,
3500 line_height,
3501 &line_layouts,
3502 cx,
3503 );
3504
3505 let scroll_max = point(
3506 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
3507 max_row as f32,
3508 );
3509
3510 self.editor.update(cx, |editor, cx| {
3511 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3512
3513 let autoscrolled = if autoscroll_horizontally {
3514 editor.autoscroll_horizontally(
3515 start_row,
3516 text_hitbox.size.width,
3517 scroll_width,
3518 em_width,
3519 &line_layouts,
3520 cx,
3521 )
3522 } else {
3523 false
3524 };
3525
3526 if clamped || autoscrolled {
3527 snapshot = editor.snapshot(cx);
3528 scroll_position = snapshot.scroll_position();
3529 }
3530 });
3531
3532 let scroll_pixel_position = point(
3533 scroll_position.x * em_width,
3534 scroll_position.y * line_height,
3535 );
3536
3537 cx.with_element_id(Some("blocks"), |cx| {
3538 self.layout_blocks(
3539 &mut blocks,
3540 &hitbox,
3541 line_height,
3542 scroll_pixel_position,
3543 cx,
3544 );
3545 });
3546
3547 let cursors = self.layout_cursors(
3548 &snapshot,
3549 &selections,
3550 start_row..end_row,
3551 &line_layouts,
3552 &text_hitbox,
3553 content_origin,
3554 scroll_pixel_position,
3555 line_height,
3556 em_width,
3557 cx,
3558 );
3559
3560 let scrollbar_layout = self.layout_scrollbar(
3561 &snapshot,
3562 bounds,
3563 scroll_position,
3564 line_height,
3565 height_in_lines,
3566 cx,
3567 );
3568
3569 let folds = cx.with_element_id(Some("folds"), |cx| {
3570 self.layout_folds(
3571 &snapshot,
3572 content_origin,
3573 start_anchor..end_anchor,
3574 start_row..end_row,
3575 scroll_pixel_position,
3576 line_height,
3577 &line_layouts,
3578 cx,
3579 )
3580 });
3581
3582 let gutter_settings = EditorSettings::get_global(cx).gutter;
3583
3584 let mut context_menu_visible = false;
3585 let mut code_actions_indicator = None;
3586 if let Some(newest_selection_head) = newest_selection_head {
3587 if (start_row..end_row).contains(&newest_selection_head.row()) {
3588 context_menu_visible = self.layout_context_menu(
3589 line_height,
3590 &hitbox,
3591 &text_hitbox,
3592 content_origin,
3593 start_row,
3594 scroll_pixel_position,
3595 &line_layouts,
3596 newest_selection_head,
3597 cx,
3598 );
3599 if gutter_settings.code_actions {
3600 code_actions_indicator = self.layout_code_actions_indicator(
3601 line_height,
3602 newest_selection_head,
3603 scroll_pixel_position,
3604 &gutter_dimensions,
3605 &gutter_hitbox,
3606 cx,
3607 );
3608 }
3609 }
3610 }
3611
3612 if !context_menu_visible && !cx.has_active_drag() {
3613 self.layout_hover_popovers(
3614 &snapshot,
3615 &hitbox,
3616 &text_hitbox,
3617 start_row..end_row,
3618 content_origin,
3619 scroll_pixel_position,
3620 &line_layouts,
3621 line_height,
3622 em_width,
3623 cx,
3624 );
3625 }
3626
3627 let mouse_context_menu = self.layout_mouse_context_menu(cx);
3628
3629 let fold_indicators = if gutter_settings.folds {
3630 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
3631 self.layout_gutter_fold_indicators(
3632 fold_statuses,
3633 line_height,
3634 &gutter_dimensions,
3635 gutter_settings,
3636 scroll_pixel_position,
3637 &gutter_hitbox,
3638 cx,
3639 )
3640 })
3641 } else {
3642 Vec::new()
3643 };
3644
3645 let invisible_symbol_font_size = font_size / 2.;
3646 let tab_invisible = cx
3647 .text_system()
3648 .shape_line(
3649 "→".into(),
3650 invisible_symbol_font_size,
3651 &[TextRun {
3652 len: "→".len(),
3653 font: self.style.text.font(),
3654 color: cx.theme().colors().editor_invisible,
3655 background_color: None,
3656 underline: None,
3657 strikethrough: None,
3658 }],
3659 )
3660 .unwrap();
3661 let space_invisible = cx
3662 .text_system()
3663 .shape_line(
3664 "•".into(),
3665 invisible_symbol_font_size,
3666 &[TextRun {
3667 len: "•".len(),
3668 font: self.style.text.font(),
3669 color: cx.theme().colors().editor_invisible,
3670 background_color: None,
3671 underline: None,
3672 strikethrough: None,
3673 }],
3674 )
3675 .unwrap();
3676
3677 EditorLayout {
3678 mode: snapshot.mode,
3679 position_map: Arc::new(PositionMap {
3680 size: bounds.size,
3681 scroll_pixel_position,
3682 scroll_max,
3683 line_layouts,
3684 line_height,
3685 em_width,
3686 em_advance,
3687 snapshot,
3688 }),
3689 visible_display_row_range: start_row..end_row,
3690 wrap_guides,
3691 hitbox,
3692 text_hitbox,
3693 gutter_hitbox,
3694 gutter_dimensions,
3695 content_origin,
3696 scrollbar_layout,
3697 max_row,
3698 active_rows,
3699 highlighted_rows,
3700 highlighted_ranges,
3701 redacted_ranges,
3702 line_numbers,
3703 display_hunks,
3704 blamed_display_rows,
3705 folds,
3706 blocks,
3707 cursors,
3708 selections,
3709 mouse_context_menu,
3710 code_actions_indicator,
3711 fold_indicators,
3712 tab_invisible,
3713 space_invisible,
3714 }
3715 })
3716 })
3717 }
3718
3719 fn paint(
3720 &mut self,
3721 bounds: Bounds<gpui::Pixels>,
3722 _: &mut Self::BeforeLayout,
3723 layout: &mut Self::AfterLayout,
3724 cx: &mut ElementContext,
3725 ) {
3726 let focus_handle = self.editor.focus_handle(cx);
3727 let key_context = self.editor.read(cx).key_context(cx);
3728 cx.set_focus_handle(&focus_handle);
3729 cx.set_key_context(key_context);
3730 cx.set_view_id(self.editor.entity_id());
3731 cx.handle_input(
3732 &focus_handle,
3733 ElementInputHandler::new(bounds, self.editor.clone()),
3734 );
3735 self.register_actions(cx);
3736 self.register_key_listeners(cx, layout);
3737
3738 let text_style = TextStyleRefinement {
3739 font_size: Some(self.style.text.font_size),
3740 line_height: Some(self.style.text.line_height),
3741 ..Default::default()
3742 };
3743 cx.with_text_style(Some(text_style), |cx| {
3744 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3745 self.paint_mouse_listeners(layout, cx);
3746
3747 self.paint_background(layout, cx);
3748 if layout.gutter_hitbox.size.width > Pixels::ZERO {
3749 self.paint_gutter(layout, cx);
3750 }
3751 self.paint_text(layout, cx);
3752
3753 if !layout.blocks.is_empty() {
3754 cx.with_element_id(Some("blocks"), |cx| {
3755 self.paint_blocks(layout, cx);
3756 });
3757 }
3758
3759 self.paint_scrollbar(layout, cx);
3760 self.paint_mouse_context_menu(layout, cx);
3761 });
3762 })
3763 }
3764}
3765
3766impl IntoElement for EditorElement {
3767 type Element = Self;
3768
3769 fn into_element(self) -> Self::Element {
3770 self
3771 }
3772}
3773
3774type BufferRow = u32;
3775
3776pub struct EditorLayout {
3777 position_map: Arc<PositionMap>,
3778 hitbox: Hitbox,
3779 text_hitbox: Hitbox,
3780 gutter_hitbox: Hitbox,
3781 gutter_dimensions: GutterDimensions,
3782 content_origin: gpui::Point<Pixels>,
3783 scrollbar_layout: Option<ScrollbarLayout>,
3784 mode: EditorMode,
3785 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3786 visible_display_row_range: Range<u32>,
3787 active_rows: BTreeMap<u32, bool>,
3788 highlighted_rows: BTreeMap<u32, Hsla>,
3789 line_numbers: Vec<Option<ShapedLine>>,
3790 display_hunks: Vec<DisplayDiffHunk>,
3791 blamed_display_rows: Option<Vec<AnyElement>>,
3792 folds: Vec<FoldLayout>,
3793 blocks: Vec<BlockLayout>,
3794 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3795 redacted_ranges: Vec<Range<DisplayPoint>>,
3796 cursors: Vec<CursorLayout>,
3797 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3798 max_row: u32,
3799 code_actions_indicator: Option<AnyElement>,
3800 fold_indicators: Vec<Option<AnyElement>>,
3801 mouse_context_menu: Option<AnyElement>,
3802 tab_invisible: ShapedLine,
3803 space_invisible: ShapedLine,
3804}
3805
3806impl EditorLayout {
3807 fn line_end_overshoot(&self) -> Pixels {
3808 0.15 * self.position_map.line_height
3809 }
3810}
3811
3812struct ScrollbarLayout {
3813 hitbox: Hitbox,
3814 visible_row_range: Range<f32>,
3815 visible: bool,
3816 height: Pixels,
3817 scroll_height: f32,
3818 first_row_y_offset: Pixels,
3819 row_height: Pixels,
3820}
3821
3822impl ScrollbarLayout {
3823 const BORDER_WIDTH: Pixels = px(1.0);
3824 const MIN_MARKER_HEIGHT: Pixels = px(2.0);
3825
3826 fn thumb_bounds(&self) -> Bounds<Pixels> {
3827 let thumb_top = self.y_for_row(self.visible_row_range.start) - self.first_row_y_offset;
3828 let thumb_bottom = self.y_for_row(self.visible_row_range.end) + self.first_row_y_offset;
3829 Bounds::from_corners(
3830 point(self.hitbox.left(), thumb_top),
3831 point(self.hitbox.right(), thumb_bottom),
3832 )
3833 }
3834
3835 fn y_for_row(&self, row: f32) -> Pixels {
3836 self.hitbox.top() + self.first_row_y_offset + row * self.row_height
3837 }
3838
3839 fn ys_for_marker(&self, start_row: u32, end_row: u32) -> (Pixels, Pixels) {
3840 let start_y = self.y_for_row(start_row as f32);
3841 let mut end_y = self.y_for_row((end_row + 1) as f32);
3842 if end_y - start_y < Self::MIN_MARKER_HEIGHT {
3843 end_y = start_y + Self::MIN_MARKER_HEIGHT;
3844 }
3845 (start_y, end_y)
3846 }
3847}
3848
3849struct FoldLayout {
3850 display_range: Range<DisplayPoint>,
3851 hover_element: AnyElement,
3852}
3853
3854struct PositionMap {
3855 size: Size<Pixels>,
3856 line_height: Pixels,
3857 scroll_pixel_position: gpui::Point<Pixels>,
3858 scroll_max: gpui::Point<f32>,
3859 em_width: Pixels,
3860 em_advance: Pixels,
3861 line_layouts: Vec<LineWithInvisibles>,
3862 snapshot: EditorSnapshot,
3863}
3864
3865#[derive(Debug, Copy, Clone)]
3866pub struct PointForPosition {
3867 pub previous_valid: DisplayPoint,
3868 pub next_valid: DisplayPoint,
3869 pub exact_unclipped: DisplayPoint,
3870 pub column_overshoot_after_line_end: u32,
3871}
3872
3873impl PointForPosition {
3874 pub fn as_valid(&self) -> Option<DisplayPoint> {
3875 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3876 Some(self.previous_valid)
3877 } else {
3878 None
3879 }
3880 }
3881}
3882
3883impl PositionMap {
3884 fn point_for_position(
3885 &self,
3886 text_bounds: Bounds<Pixels>,
3887 position: gpui::Point<Pixels>,
3888 ) -> PointForPosition {
3889 let scroll_position = self.snapshot.scroll_position();
3890 let position = position - text_bounds.origin;
3891 let y = position.y.max(px(0.)).min(self.size.height);
3892 let x = position.x + (scroll_position.x * self.em_width);
3893 let row = ((y / self.line_height) + scroll_position.y) as u32;
3894
3895 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3896 .line_layouts
3897 .get(row as usize - scroll_position.y as usize)
3898 .map(|LineWithInvisibles { line, .. }| line)
3899 {
3900 if let Some(ix) = line.index_for_x(x) {
3901 (ix as u32, px(0.))
3902 } else {
3903 (line.len as u32, px(0.).max(x - line.width))
3904 }
3905 } else {
3906 (0, x)
3907 };
3908
3909 let mut exact_unclipped = DisplayPoint::new(row, column);
3910 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3911 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3912
3913 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3914 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3915 PointForPosition {
3916 previous_valid,
3917 next_valid,
3918 exact_unclipped,
3919 column_overshoot_after_line_end,
3920 }
3921 }
3922}
3923
3924struct BlockLayout {
3925 row: u32,
3926 element: AnyElement,
3927 available_space: Size<AvailableSpace>,
3928 style: BlockStyle,
3929}
3930
3931fn layout_line(
3932 row: u32,
3933 snapshot: &EditorSnapshot,
3934 style: &EditorStyle,
3935 cx: &WindowContext,
3936) -> Result<ShapedLine> {
3937 let mut line = snapshot.line(row);
3938
3939 if line.len() > MAX_LINE_LEN {
3940 let mut len = MAX_LINE_LEN;
3941 while !line.is_char_boundary(len) {
3942 len -= 1;
3943 }
3944
3945 line.truncate(len);
3946 }
3947
3948 cx.text_system().shape_line(
3949 line.into(),
3950 style.text.font_size.to_pixels(cx.rem_size()),
3951 &[TextRun {
3952 len: snapshot.line_len(row) as usize,
3953 font: style.text.font(),
3954 color: Hsla::default(),
3955 background_color: None,
3956 underline: None,
3957 strikethrough: None,
3958 }],
3959 )
3960}
3961
3962pub struct CursorLayout {
3963 origin: gpui::Point<Pixels>,
3964 block_width: Pixels,
3965 line_height: Pixels,
3966 color: Hsla,
3967 shape: CursorShape,
3968 block_text: Option<ShapedLine>,
3969 cursor_name: Option<AnyElement>,
3970}
3971
3972#[derive(Debug)]
3973pub struct CursorName {
3974 string: SharedString,
3975 color: Hsla,
3976 is_top_row: bool,
3977}
3978
3979impl CursorLayout {
3980 pub fn new(
3981 origin: gpui::Point<Pixels>,
3982 block_width: Pixels,
3983 line_height: Pixels,
3984 color: Hsla,
3985 shape: CursorShape,
3986 block_text: Option<ShapedLine>,
3987 ) -> CursorLayout {
3988 CursorLayout {
3989 origin,
3990 block_width,
3991 line_height,
3992 color,
3993 shape,
3994 block_text,
3995 cursor_name: None,
3996 }
3997 }
3998
3999 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
4000 Bounds {
4001 origin: self.origin + origin,
4002 size: size(self.block_width, self.line_height),
4003 }
4004 }
4005
4006 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
4007 match self.shape {
4008 CursorShape::Bar => Bounds {
4009 origin: self.origin + origin,
4010 size: size(px(2.0), self.line_height),
4011 },
4012 CursorShape::Block | CursorShape::Hollow => Bounds {
4013 origin: self.origin + origin,
4014 size: size(self.block_width, self.line_height),
4015 },
4016 CursorShape::Underscore => Bounds {
4017 origin: self.origin
4018 + origin
4019 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
4020 size: size(self.block_width, px(2.0)),
4021 },
4022 }
4023 }
4024
4025 pub fn layout(
4026 &mut self,
4027 origin: gpui::Point<Pixels>,
4028 cursor_name: Option<CursorName>,
4029 cx: &mut ElementContext,
4030 ) {
4031 if let Some(cursor_name) = cursor_name {
4032 let bounds = self.bounds(origin);
4033 let text_size = self.line_height / 1.5;
4034
4035 let name_origin = if cursor_name.is_top_row {
4036 point(bounds.right() - px(1.), bounds.top())
4037 } else {
4038 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
4039 };
4040 let mut name_element = div()
4041 .bg(self.color)
4042 .text_size(text_size)
4043 .px_0p5()
4044 .line_height(text_size + px(2.))
4045 .text_color(cursor_name.color)
4046 .child(cursor_name.string.clone())
4047 .into_any_element();
4048
4049 name_element.layout(
4050 name_origin,
4051 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
4052 cx,
4053 );
4054
4055 self.cursor_name = Some(name_element);
4056 }
4057 }
4058
4059 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
4060 let bounds = self.bounds(origin);
4061
4062 //Draw background or border quad
4063 let cursor = if matches!(self.shape, CursorShape::Hollow) {
4064 outline(bounds, self.color)
4065 } else {
4066 fill(bounds, self.color)
4067 };
4068
4069 if let Some(name) = &mut self.cursor_name {
4070 name.paint(cx);
4071 }
4072
4073 cx.paint_quad(cursor);
4074
4075 if let Some(block_text) = &self.block_text {
4076 block_text
4077 .paint(self.origin + origin, self.line_height, cx)
4078 .log_err();
4079 }
4080 }
4081
4082 pub fn shape(&self) -> CursorShape {
4083 self.shape
4084 }
4085}
4086
4087#[derive(Debug)]
4088pub struct HighlightedRange {
4089 pub start_y: Pixels,
4090 pub line_height: Pixels,
4091 pub lines: Vec<HighlightedRangeLine>,
4092 pub color: Hsla,
4093 pub corner_radius: Pixels,
4094}
4095
4096#[derive(Debug)]
4097pub struct HighlightedRangeLine {
4098 pub start_x: Pixels,
4099 pub end_x: Pixels,
4100}
4101
4102impl HighlightedRange {
4103 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
4104 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
4105 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
4106 self.paint_lines(
4107 self.start_y + self.line_height,
4108 &self.lines[1..],
4109 bounds,
4110 cx,
4111 );
4112 } else {
4113 self.paint_lines(self.start_y, &self.lines, bounds, cx);
4114 }
4115 }
4116
4117 fn paint_lines(
4118 &self,
4119 start_y: Pixels,
4120 lines: &[HighlightedRangeLine],
4121 _bounds: Bounds<Pixels>,
4122 cx: &mut ElementContext,
4123 ) {
4124 if lines.is_empty() {
4125 return;
4126 }
4127
4128 let first_line = lines.first().unwrap();
4129 let last_line = lines.last().unwrap();
4130
4131 let first_top_left = point(first_line.start_x, start_y);
4132 let first_top_right = point(first_line.end_x, start_y);
4133
4134 let curve_height = point(Pixels::ZERO, self.corner_radius);
4135 let curve_width = |start_x: Pixels, end_x: Pixels| {
4136 let max = (end_x - start_x) / 2.;
4137 let width = if max < self.corner_radius {
4138 max
4139 } else {
4140 self.corner_radius
4141 };
4142
4143 point(width, Pixels::ZERO)
4144 };
4145
4146 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
4147 let mut path = gpui::Path::new(first_top_right - top_curve_width);
4148 path.curve_to(first_top_right + curve_height, first_top_right);
4149
4150 let mut iter = lines.iter().enumerate().peekable();
4151 while let Some((ix, line)) = iter.next() {
4152 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
4153
4154 if let Some((_, next_line)) = iter.peek() {
4155 let next_top_right = point(next_line.end_x, bottom_right.y);
4156
4157 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
4158 Ordering::Equal => {
4159 path.line_to(bottom_right);
4160 }
4161 Ordering::Less => {
4162 let curve_width = curve_width(next_top_right.x, bottom_right.x);
4163 path.line_to(bottom_right - curve_height);
4164 if self.corner_radius > Pixels::ZERO {
4165 path.curve_to(bottom_right - curve_width, bottom_right);
4166 }
4167 path.line_to(next_top_right + curve_width);
4168 if self.corner_radius > Pixels::ZERO {
4169 path.curve_to(next_top_right + curve_height, next_top_right);
4170 }
4171 }
4172 Ordering::Greater => {
4173 let curve_width = curve_width(bottom_right.x, next_top_right.x);
4174 path.line_to(bottom_right - curve_height);
4175 if self.corner_radius > Pixels::ZERO {
4176 path.curve_to(bottom_right + curve_width, bottom_right);
4177 }
4178 path.line_to(next_top_right - curve_width);
4179 if self.corner_radius > Pixels::ZERO {
4180 path.curve_to(next_top_right + curve_height, next_top_right);
4181 }
4182 }
4183 }
4184 } else {
4185 let curve_width = curve_width(line.start_x, line.end_x);
4186 path.line_to(bottom_right - curve_height);
4187 if self.corner_radius > Pixels::ZERO {
4188 path.curve_to(bottom_right - curve_width, bottom_right);
4189 }
4190
4191 let bottom_left = point(line.start_x, bottom_right.y);
4192 path.line_to(bottom_left + curve_width);
4193 if self.corner_radius > Pixels::ZERO {
4194 path.curve_to(bottom_left - curve_height, bottom_left);
4195 }
4196 }
4197 }
4198
4199 if first_line.start_x > last_line.start_x {
4200 let curve_width = curve_width(last_line.start_x, first_line.start_x);
4201 let second_top_left = point(last_line.start_x, start_y + self.line_height);
4202 path.line_to(second_top_left + curve_height);
4203 if self.corner_radius > Pixels::ZERO {
4204 path.curve_to(second_top_left + curve_width, second_top_left);
4205 }
4206 let first_bottom_left = point(first_line.start_x, second_top_left.y);
4207 path.line_to(first_bottom_left - curve_width);
4208 if self.corner_radius > Pixels::ZERO {
4209 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
4210 }
4211 }
4212
4213 path.line_to(first_top_left + curve_height);
4214 if self.corner_radius > Pixels::ZERO {
4215 path.curve_to(first_top_left + top_curve_width, first_top_left);
4216 }
4217 path.line_to(first_top_right - top_curve_width);
4218
4219 cx.paint_path(path, self.color);
4220 }
4221}
4222
4223pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
4224 (delta.pow(1.5) / 100.0).into()
4225}
4226
4227fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
4228 (delta.pow(1.2) / 300.0).into()
4229}
4230
4231#[cfg(test)]
4232mod tests {
4233 use super::*;
4234 use crate::{
4235 display_map::{BlockDisposition, BlockProperties},
4236 editor_tests::{init_test, update_test_language_settings},
4237 Editor, MultiBuffer,
4238 };
4239 use gpui::TestAppContext;
4240 use language::language_settings;
4241 use log::info;
4242 use std::{num::NonZeroU32, sync::Arc};
4243 use util::test::sample_text;
4244
4245 #[gpui::test]
4246 fn test_shape_line_numbers(cx: &mut TestAppContext) {
4247 init_test(cx, |_| {});
4248 let window = cx.add_window(|cx| {
4249 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4250 Editor::new(EditorMode::Full, buffer, None, cx)
4251 });
4252
4253 let editor = window.root(cx).unwrap();
4254 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4255 let element = EditorElement::new(&editor, style);
4256 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
4257
4258 let layouts = cx
4259 .update_window(*window, |_, cx| {
4260 cx.with_element_context(|cx| {
4261 element
4262 .layout_line_numbers(
4263 0..6,
4264 (0..6).map(Some),
4265 &Default::default(),
4266 Some(DisplayPoint::new(0, 0)),
4267 &snapshot,
4268 cx,
4269 )
4270 .0
4271 })
4272 })
4273 .unwrap();
4274 assert_eq!(layouts.len(), 6);
4275
4276 let relative_rows =
4277 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(0..6), Some(3));
4278 assert_eq!(relative_rows[&0], 3);
4279 assert_eq!(relative_rows[&1], 2);
4280 assert_eq!(relative_rows[&2], 1);
4281 // current line has no relative number
4282 assert_eq!(relative_rows[&4], 1);
4283 assert_eq!(relative_rows[&5], 2);
4284
4285 // works if cursor is before screen
4286 let relative_rows =
4287 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(3..6), Some(1));
4288 assert_eq!(relative_rows.len(), 3);
4289 assert_eq!(relative_rows[&3], 2);
4290 assert_eq!(relative_rows[&4], 3);
4291 assert_eq!(relative_rows[&5], 4);
4292
4293 // works if cursor is after screen
4294 let relative_rows =
4295 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(0..3), Some(6));
4296 assert_eq!(relative_rows.len(), 3);
4297 assert_eq!(relative_rows[&0], 5);
4298 assert_eq!(relative_rows[&1], 4);
4299 assert_eq!(relative_rows[&2], 3);
4300 }
4301
4302 #[gpui::test]
4303 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
4304 init_test(cx, |_| {});
4305
4306 let window = cx.add_window(|cx| {
4307 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
4308 Editor::new(EditorMode::Full, buffer, None, cx)
4309 });
4310 let editor = window.root(cx).unwrap();
4311 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4312 let mut element = EditorElement::new(&editor, style);
4313
4314 window
4315 .update(cx, |editor, cx| {
4316 editor.cursor_shape = CursorShape::Block;
4317 editor.change_selections(None, cx, |s| {
4318 s.select_ranges([
4319 Point::new(0, 0)..Point::new(1, 0),
4320 Point::new(3, 2)..Point::new(3, 3),
4321 Point::new(5, 6)..Point::new(6, 0),
4322 ]);
4323 });
4324 })
4325 .unwrap();
4326 let state = cx
4327 .update_window(window.into(), |_view, cx| {
4328 cx.with_element_context(|cx| {
4329 element.after_layout(
4330 Bounds {
4331 origin: point(px(500.), px(500.)),
4332 size: size(px(500.), px(500.)),
4333 },
4334 &mut (),
4335 cx,
4336 )
4337 })
4338 })
4339 .unwrap();
4340
4341 assert_eq!(state.selections.len(), 1);
4342 let local_selections = &state.selections[0].1;
4343 assert_eq!(local_selections.len(), 3);
4344 // moves cursor back one line
4345 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
4346 assert_eq!(
4347 local_selections[0].range,
4348 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
4349 );
4350
4351 // moves cursor back one column
4352 assert_eq!(
4353 local_selections[1].range,
4354 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
4355 );
4356 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
4357
4358 // leaves cursor on the max point
4359 assert_eq!(
4360 local_selections[2].range,
4361 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
4362 );
4363 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
4364
4365 // active lines does not include 1 (even though the range of the selection does)
4366 assert_eq!(
4367 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
4368 vec![0, 3, 5, 6]
4369 );
4370
4371 // multi-buffer support
4372 // in DisplayPoint coordinates, this is what we're dealing with:
4373 // 0: [[file
4374 // 1: header]]
4375 // 2: aaaaaa
4376 // 3: bbbbbb
4377 // 4: cccccc
4378 // 5:
4379 // 6: ...
4380 // 7: ffffff
4381 // 8: gggggg
4382 // 9: hhhhhh
4383 // 10:
4384 // 11: [[file
4385 // 12: header]]
4386 // 13: bbbbbb
4387 // 14: cccccc
4388 // 15: dddddd
4389 let window = cx.add_window(|cx| {
4390 let buffer = MultiBuffer::build_multi(
4391 [
4392 (
4393 &(sample_text(8, 6, 'a') + "\n"),
4394 vec![
4395 Point::new(0, 0)..Point::new(3, 0),
4396 Point::new(4, 0)..Point::new(7, 0),
4397 ],
4398 ),
4399 (
4400 &(sample_text(8, 6, 'a') + "\n"),
4401 vec![Point::new(1, 0)..Point::new(3, 0)],
4402 ),
4403 ],
4404 cx,
4405 );
4406 Editor::new(EditorMode::Full, buffer, None, cx)
4407 });
4408 let editor = window.root(cx).unwrap();
4409 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4410 let mut element = EditorElement::new(&editor, style);
4411 let _state = window.update(cx, |editor, cx| {
4412 editor.cursor_shape = CursorShape::Block;
4413 editor.change_selections(None, cx, |s| {
4414 s.select_display_ranges([
4415 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
4416 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
4417 ]);
4418 });
4419 });
4420
4421 let state = cx
4422 .update_window(window.into(), |_view, cx| {
4423 cx.with_element_context(|cx| {
4424 element.after_layout(
4425 Bounds {
4426 origin: point(px(500.), px(500.)),
4427 size: size(px(500.), px(500.)),
4428 },
4429 &mut (),
4430 cx,
4431 )
4432 })
4433 })
4434 .unwrap();
4435 assert_eq!(state.selections.len(), 1);
4436 let local_selections = &state.selections[0].1;
4437 assert_eq!(local_selections.len(), 2);
4438
4439 // moves cursor on excerpt boundary back a line
4440 // and doesn't allow selection to bleed through
4441 assert_eq!(
4442 local_selections[0].range,
4443 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
4444 );
4445 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
4446 // moves cursor on buffer boundary back two lines
4447 // and doesn't allow selection to bleed through
4448 assert_eq!(
4449 local_selections[1].range,
4450 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
4451 );
4452 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
4453 }
4454
4455 #[gpui::test]
4456 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
4457 init_test(cx, |_| {});
4458
4459 let window = cx.add_window(|cx| {
4460 let buffer = MultiBuffer::build_simple("", cx);
4461 Editor::new(EditorMode::Full, buffer, None, cx)
4462 });
4463 let editor = window.root(cx).unwrap();
4464 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4465 window
4466 .update(cx, |editor, cx| {
4467 editor.set_placeholder_text("hello", cx);
4468 editor.insert_blocks(
4469 [BlockProperties {
4470 style: BlockStyle::Fixed,
4471 disposition: BlockDisposition::Above,
4472 height: 3,
4473 position: Anchor::min(),
4474 render: Arc::new(|_| div().into_any()),
4475 }],
4476 None,
4477 cx,
4478 );
4479
4480 // Blur the editor so that it displays placeholder text.
4481 cx.blur();
4482 })
4483 .unwrap();
4484
4485 let mut element = EditorElement::new(&editor, style);
4486 let state = cx
4487 .update_window(window.into(), |_view, cx| {
4488 cx.with_element_context(|cx| {
4489 element.after_layout(
4490 Bounds {
4491 origin: point(px(500.), px(500.)),
4492 size: size(px(500.), px(500.)),
4493 },
4494 &mut (),
4495 cx,
4496 )
4497 })
4498 })
4499 .unwrap();
4500
4501 assert_eq!(state.position_map.line_layouts.len(), 4);
4502 assert_eq!(
4503 state
4504 .line_numbers
4505 .iter()
4506 .map(Option::is_some)
4507 .collect::<Vec<_>>(),
4508 &[false, false, false, true]
4509 );
4510 }
4511
4512 #[gpui::test]
4513 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
4514 const TAB_SIZE: u32 = 4;
4515
4516 let input_text = "\t \t|\t| a b";
4517 let expected_invisibles = vec![
4518 Invisible::Tab {
4519 line_start_offset: 0,
4520 },
4521 Invisible::Whitespace {
4522 line_offset: TAB_SIZE as usize,
4523 },
4524 Invisible::Tab {
4525 line_start_offset: TAB_SIZE as usize + 1,
4526 },
4527 Invisible::Tab {
4528 line_start_offset: TAB_SIZE as usize * 2 + 1,
4529 },
4530 Invisible::Whitespace {
4531 line_offset: TAB_SIZE as usize * 3 + 1,
4532 },
4533 Invisible::Whitespace {
4534 line_offset: TAB_SIZE as usize * 3 + 3,
4535 },
4536 ];
4537 assert_eq!(
4538 expected_invisibles.len(),
4539 input_text
4540 .chars()
4541 .filter(|initial_char| initial_char.is_whitespace())
4542 .count(),
4543 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4544 );
4545
4546 init_test(cx, |s| {
4547 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4548 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
4549 });
4550
4551 let actual_invisibles =
4552 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
4553
4554 assert_eq!(expected_invisibles, actual_invisibles);
4555 }
4556
4557 #[gpui::test]
4558 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
4559 init_test(cx, |s| {
4560 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4561 s.defaults.tab_size = NonZeroU32::new(4);
4562 });
4563
4564 for editor_mode_without_invisibles in [
4565 EditorMode::SingleLine,
4566 EditorMode::AutoHeight { max_lines: 100 },
4567 ] {
4568 let invisibles = collect_invisibles_from_new_editor(
4569 cx,
4570 editor_mode_without_invisibles,
4571 "\t\t\t| | a b",
4572 px(500.0),
4573 );
4574 assert!(invisibles.is_empty(),
4575 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4576 }
4577 }
4578
4579 #[gpui::test]
4580 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4581 let tab_size = 4;
4582 let input_text = "a\tbcd ".repeat(9);
4583 let repeated_invisibles = [
4584 Invisible::Tab {
4585 line_start_offset: 1,
4586 },
4587 Invisible::Whitespace {
4588 line_offset: tab_size as usize + 3,
4589 },
4590 Invisible::Whitespace {
4591 line_offset: tab_size as usize + 4,
4592 },
4593 Invisible::Whitespace {
4594 line_offset: tab_size as usize + 5,
4595 },
4596 ];
4597 let expected_invisibles = std::iter::once(repeated_invisibles)
4598 .cycle()
4599 .take(9)
4600 .flatten()
4601 .collect::<Vec<_>>();
4602 assert_eq!(
4603 expected_invisibles.len(),
4604 input_text
4605 .chars()
4606 .filter(|initial_char| initial_char.is_whitespace())
4607 .count(),
4608 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4609 );
4610 info!("Expected invisibles: {expected_invisibles:?}");
4611
4612 init_test(cx, |_| {});
4613
4614 // Put the same string with repeating whitespace pattern into editors of various size,
4615 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4616 let resize_step = 10.0;
4617 let mut editor_width = 200.0;
4618 while editor_width <= 1000.0 {
4619 update_test_language_settings(cx, |s| {
4620 s.defaults.tab_size = NonZeroU32::new(tab_size);
4621 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4622 s.defaults.preferred_line_length = Some(editor_width as u32);
4623 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4624 });
4625
4626 let actual_invisibles = collect_invisibles_from_new_editor(
4627 cx,
4628 EditorMode::Full,
4629 &input_text,
4630 px(editor_width),
4631 );
4632
4633 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4634 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4635 let mut i = 0;
4636 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4637 i = actual_index;
4638 match expected_invisibles.get(i) {
4639 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4640 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4641 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4642 _ => {
4643 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4644 }
4645 },
4646 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4647 }
4648 }
4649 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4650 assert!(
4651 missing_expected_invisibles.is_empty(),
4652 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4653 );
4654
4655 editor_width += resize_step;
4656 }
4657 }
4658
4659 fn collect_invisibles_from_new_editor(
4660 cx: &mut TestAppContext,
4661 editor_mode: EditorMode,
4662 input_text: &str,
4663 editor_width: Pixels,
4664 ) -> Vec<Invisible> {
4665 info!(
4666 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4667 editor_width.0
4668 );
4669 let window = cx.add_window(|cx| {
4670 let buffer = MultiBuffer::build_simple(&input_text, cx);
4671 Editor::new(editor_mode, buffer, None, cx)
4672 });
4673 let editor = window.root(cx).unwrap();
4674 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4675 let mut element = EditorElement::new(&editor, style);
4676 window
4677 .update(cx, |editor, cx| {
4678 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4679 editor.set_wrap_width(Some(editor_width), cx);
4680 })
4681 .unwrap();
4682 let layout_state = cx
4683 .update_window(window.into(), |_, cx| {
4684 cx.with_element_context(|cx| {
4685 element.after_layout(
4686 Bounds {
4687 origin: point(px(500.), px(500.)),
4688 size: size(px(500.), px(500.)),
4689 },
4690 &mut (),
4691 cx,
4692 )
4693 })
4694 })
4695 .unwrap();
4696
4697 layout_state
4698 .position_map
4699 .line_layouts
4700 .iter()
4701 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
4702 .cloned()
4703 .collect()
4704 }
4705}
4706
4707pub fn register_action<T: Action>(
4708 view: &View<Editor>,
4709 cx: &mut WindowContext,
4710 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4711) {
4712 let view = view.clone();
4713 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4714 let action = action.downcast_ref().unwrap();
4715 if phase == DispatchPhase::Bubble {
4716 view.update(cx, |editor, cx| {
4717 listener(editor, action, cx);
4718 })
4719 }
4720 })
4721}
4722
4723fn compute_auto_height_layout(
4724 editor: &mut Editor,
4725 max_lines: usize,
4726 max_line_number_width: Pixels,
4727 known_dimensions: Size<Option<Pixels>>,
4728 cx: &mut ViewContext<Editor>,
4729) -> Option<Size<Pixels>> {
4730 let width = known_dimensions.width?;
4731 if let Some(height) = known_dimensions.height {
4732 return Some(size(width, height));
4733 }
4734
4735 let style = editor.style.as_ref().unwrap();
4736 let font_id = cx.text_system().resolve_font(&style.text.font());
4737 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4738 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4739 let em_width = cx
4740 .text_system()
4741 .typographic_bounds(font_id, font_size, 'm')
4742 .unwrap()
4743 .size
4744 .width;
4745
4746 let mut snapshot = editor.snapshot(cx);
4747 let gutter_dimensions =
4748 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4749
4750 editor.gutter_width = gutter_dimensions.width;
4751 let text_width = width - gutter_dimensions.width;
4752 let overscroll = size(em_width, px(0.));
4753
4754 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4755 if editor.set_wrap_width(Some(editor_width), cx) {
4756 snapshot = editor.snapshot(cx);
4757 }
4758
4759 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4760 let height = scroll_height
4761 .max(line_height)
4762 .min(line_height * max_lines as f32);
4763
4764 Some(size(width, height))
4765}