1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::ShowScrollbar,
7 git::{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 link_go_to_definition::{
13 go_to_fetched_definition, go_to_fetched_type_definition, show_link_definition,
14 update_go_to_definition_link, update_inlay_link_and_hover_points, GoToDefinitionTrigger,
15 LinkGoToDefinitionState,
16 },
17 mouse_context_menu,
18 scroll::scroll_amount::ScrollAmount,
19 CursorShape, DisplayPoint, DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode,
20 EditorSettings, EditorSnapshot, EditorStyle, HalfPageDown, HalfPageUp, HoveredCursor, LineDown,
21 LineUp, OpenExcerpts, PageDown, PageUp, Point, SelectPhase, Selection, SoftWrap, ToPoint,
22 CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
23};
24use anyhow::Result;
25use collections::{BTreeMap, HashMap};
26use git::diff::DiffHunkStatus;
27use gpui::{
28 div, fill, outline, overlay, point, px, quad, relative, size, transparent_black, Action,
29 AnchorCorner, AnyElement, AvailableSpace, Bounds, ContentMask, Corners, CursorStyle,
30 DispatchPhase, Edges, Element, ElementInputHandler, Entity, Hsla, InteractiveBounds,
31 InteractiveElement, IntoElement, ModifiersChangedEvent, MouseButton, MouseDownEvent,
32 MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine,
33 SharedString, Size, StackingOrder, StatefulInteractiveElement, Style, Styled, TextRun,
34 TextStyle, View, ViewContext, WindowContext,
35};
36use itertools::Itertools;
37use language::language_settings::ShowWhitespaceSetting;
38use multi_buffer::Anchor;
39use project::{
40 project_settings::{GitGutterSetting, ProjectSettings},
41 ProjectPath,
42};
43use settings::Settings;
44use smallvec::SmallVec;
45use std::{
46 any::TypeId,
47 borrow::Cow,
48 cmp::{self, Ordering},
49 fmt::Write,
50 iter,
51 ops::Range,
52 sync::Arc,
53};
54use sum_tree::Bias;
55use theme::{ActiveTheme, PlayerColor};
56use ui::prelude::*;
57use ui::{h_flex, ButtonLike, ButtonStyle, IconButton, Tooltip};
58use util::ResultExt;
59use workspace::item::Item;
60
61struct SelectionLayout {
62 head: DisplayPoint,
63 cursor_shape: CursorShape,
64 is_newest: bool,
65 is_local: bool,
66 range: Range<DisplayPoint>,
67 active_rows: Range<u32>,
68 user_name: Option<SharedString>,
69}
70
71impl SelectionLayout {
72 fn new<T: ToPoint + ToDisplayPoint + Clone>(
73 selection: Selection<T>,
74 line_mode: bool,
75 cursor_shape: CursorShape,
76 map: &DisplaySnapshot,
77 is_newest: bool,
78 is_local: bool,
79 user_name: Option<SharedString>,
80 ) -> Self {
81 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
82 let display_selection = point_selection.map(|p| p.to_display_point(map));
83 let mut range = display_selection.range();
84 let mut head = display_selection.head();
85 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
86 ..map.next_line_boundary(point_selection.end).1.row();
87
88 // vim visual line mode
89 if line_mode {
90 let point_range = map.expand_to_line(point_selection.range());
91 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
92 }
93
94 // any vim visual mode (including line mode)
95 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
96 if head.column() > 0 {
97 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
98 } else if head.row() > 0 && head != map.max_point() {
99 head = map.clip_point(
100 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
101 Bias::Left,
102 );
103 // updating range.end is a no-op unless you're cursor is
104 // on the newline containing a multi-buffer divider
105 // in which case the clip_point may have moved the head up
106 // an additional row.
107 range.end = DisplayPoint::new(head.row() + 1, 0);
108 active_rows.end = head.row();
109 }
110 }
111
112 Self {
113 head,
114 cursor_shape,
115 is_newest,
116 is_local,
117 range,
118 active_rows,
119 user_name,
120 }
121 }
122}
123
124pub struct EditorElement {
125 editor: View<Editor>,
126 style: EditorStyle,
127}
128
129impl EditorElement {
130 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
131 Self {
132 editor: editor.clone(),
133 style,
134 }
135 }
136
137 fn register_actions(&self, cx: &mut WindowContext) {
138 let view = &self.editor;
139 view.update(cx, |editor, cx| {
140 for action in editor.editor_actions.iter() {
141 (action)(cx)
142 }
143 });
144
145 crate::rust_analyzer_ext::apply_related_actions(view, cx);
146 register_action(view, cx, Editor::move_left);
147 register_action(view, cx, Editor::move_right);
148 register_action(view, cx, Editor::move_down);
149 register_action(view, cx, Editor::move_up);
150 register_action(view, cx, Editor::cancel);
151 register_action(view, cx, Editor::newline);
152 register_action(view, cx, Editor::newline_above);
153 register_action(view, cx, Editor::newline_below);
154 register_action(view, cx, Editor::backspace);
155 register_action(view, cx, Editor::delete);
156 register_action(view, cx, Editor::tab);
157 register_action(view, cx, Editor::tab_prev);
158 register_action(view, cx, Editor::indent);
159 register_action(view, cx, Editor::outdent);
160 register_action(view, cx, Editor::delete_line);
161 register_action(view, cx, Editor::join_lines);
162 register_action(view, cx, Editor::sort_lines_case_sensitive);
163 register_action(view, cx, Editor::sort_lines_case_insensitive);
164 register_action(view, cx, Editor::reverse_lines);
165 register_action(view, cx, Editor::shuffle_lines);
166 register_action(view, cx, Editor::convert_to_upper_case);
167 register_action(view, cx, Editor::convert_to_lower_case);
168 register_action(view, cx, Editor::convert_to_title_case);
169 register_action(view, cx, Editor::convert_to_snake_case);
170 register_action(view, cx, Editor::convert_to_kebab_case);
171 register_action(view, cx, Editor::convert_to_upper_camel_case);
172 register_action(view, cx, Editor::convert_to_lower_camel_case);
173 register_action(view, cx, Editor::delete_to_previous_word_start);
174 register_action(view, cx, Editor::delete_to_previous_subword_start);
175 register_action(view, cx, Editor::delete_to_next_word_end);
176 register_action(view, cx, Editor::delete_to_next_subword_end);
177 register_action(view, cx, Editor::delete_to_beginning_of_line);
178 register_action(view, cx, Editor::delete_to_end_of_line);
179 register_action(view, cx, Editor::cut_to_end_of_line);
180 register_action(view, cx, Editor::duplicate_line);
181 register_action(view, cx, Editor::move_line_up);
182 register_action(view, cx, Editor::move_line_down);
183 register_action(view, cx, Editor::transpose);
184 register_action(view, cx, Editor::cut);
185 register_action(view, cx, Editor::copy);
186 register_action(view, cx, Editor::paste);
187 register_action(view, cx, Editor::undo);
188 register_action(view, cx, Editor::redo);
189 register_action(view, cx, Editor::move_page_up);
190 register_action(view, cx, Editor::move_page_down);
191 register_action(view, cx, Editor::next_screen);
192 register_action(view, cx, Editor::scroll_cursor_top);
193 register_action(view, cx, Editor::scroll_cursor_center);
194 register_action(view, cx, Editor::scroll_cursor_bottom);
195 register_action(view, cx, |editor, _: &LineDown, cx| {
196 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
197 });
198 register_action(view, cx, |editor, _: &LineUp, cx| {
199 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
200 });
201 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
202 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
203 });
204 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
205 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
206 });
207 register_action(view, cx, |editor, _: &PageDown, cx| {
208 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
209 });
210 register_action(view, cx, |editor, _: &PageUp, cx| {
211 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
212 });
213 register_action(view, cx, Editor::move_to_previous_word_start);
214 register_action(view, cx, Editor::move_to_previous_subword_start);
215 register_action(view, cx, Editor::move_to_next_word_end);
216 register_action(view, cx, Editor::move_to_next_subword_end);
217 register_action(view, cx, Editor::move_to_beginning_of_line);
218 register_action(view, cx, Editor::move_to_end_of_line);
219 register_action(view, cx, Editor::move_to_start_of_paragraph);
220 register_action(view, cx, Editor::move_to_end_of_paragraph);
221 register_action(view, cx, Editor::move_to_beginning);
222 register_action(view, cx, Editor::move_to_end);
223 register_action(view, cx, Editor::select_up);
224 register_action(view, cx, Editor::select_down);
225 register_action(view, cx, Editor::select_left);
226 register_action(view, cx, Editor::select_right);
227 register_action(view, cx, Editor::select_to_previous_word_start);
228 register_action(view, cx, Editor::select_to_previous_subword_start);
229 register_action(view, cx, Editor::select_to_next_word_end);
230 register_action(view, cx, Editor::select_to_next_subword_end);
231 register_action(view, cx, Editor::select_to_beginning_of_line);
232 register_action(view, cx, Editor::select_to_end_of_line);
233 register_action(view, cx, Editor::select_to_start_of_paragraph);
234 register_action(view, cx, Editor::select_to_end_of_paragraph);
235 register_action(view, cx, Editor::select_to_beginning);
236 register_action(view, cx, Editor::select_to_end);
237 register_action(view, cx, Editor::select_all);
238 register_action(view, cx, |editor, action, cx| {
239 editor.select_all_matches(action, cx).log_err();
240 });
241 register_action(view, cx, Editor::select_line);
242 register_action(view, cx, Editor::split_selection_into_lines);
243 register_action(view, cx, Editor::add_selection_above);
244 register_action(view, cx, Editor::add_selection_below);
245 register_action(view, cx, |editor, action, cx| {
246 editor.select_next(action, cx).log_err();
247 });
248 register_action(view, cx, |editor, action, cx| {
249 editor.select_previous(action, cx).log_err();
250 });
251 register_action(view, cx, Editor::toggle_comments);
252 register_action(view, cx, Editor::select_larger_syntax_node);
253 register_action(view, cx, Editor::select_smaller_syntax_node);
254 register_action(view, cx, Editor::move_to_enclosing_bracket);
255 register_action(view, cx, Editor::undo_selection);
256 register_action(view, cx, Editor::redo_selection);
257 register_action(view, cx, Editor::go_to_diagnostic);
258 register_action(view, cx, Editor::go_to_prev_diagnostic);
259 register_action(view, cx, Editor::go_to_hunk);
260 register_action(view, cx, Editor::go_to_prev_hunk);
261 register_action(view, cx, Editor::go_to_definition);
262 register_action(view, cx, Editor::go_to_definition_split);
263 register_action(view, cx, Editor::go_to_type_definition);
264 register_action(view, cx, Editor::go_to_type_definition_split);
265 register_action(view, cx, Editor::fold);
266 register_action(view, cx, Editor::fold_at);
267 register_action(view, cx, Editor::unfold_lines);
268 register_action(view, cx, Editor::unfold_at);
269 register_action(view, cx, Editor::fold_selected_ranges);
270 register_action(view, cx, Editor::show_completions);
271 register_action(view, cx, Editor::toggle_code_actions);
272 register_action(view, cx, Editor::open_excerpts);
273 register_action(view, cx, Editor::toggle_soft_wrap);
274 register_action(view, cx, Editor::toggle_inlay_hints);
275 register_action(view, cx, hover_popover::hover);
276 register_action(view, cx, Editor::reveal_in_finder);
277 register_action(view, cx, Editor::copy_path);
278 register_action(view, cx, Editor::copy_relative_path);
279 register_action(view, cx, Editor::copy_highlight_json);
280 register_action(view, cx, |editor, action, cx| {
281 if let Some(task) = editor.format(action, cx) {
282 task.detach_and_log_err(cx);
283 } else {
284 cx.propagate();
285 }
286 });
287 register_action(view, cx, Editor::restart_language_server);
288 register_action(view, cx, Editor::show_character_palette);
289 register_action(view, cx, |editor, action, cx| {
290 if let Some(task) = editor.confirm_completion(action, cx) {
291 task.detach_and_log_err(cx);
292 } else {
293 cx.propagate();
294 }
295 });
296 register_action(view, cx, |editor, action, cx| {
297 if let Some(task) = editor.confirm_code_action(action, cx) {
298 task.detach_and_log_err(cx);
299 } else {
300 cx.propagate();
301 }
302 });
303 register_action(view, cx, |editor, action, cx| {
304 if let Some(task) = editor.rename(action, cx) {
305 task.detach_and_log_err(cx);
306 } else {
307 cx.propagate();
308 }
309 });
310 register_action(view, cx, |editor, action, cx| {
311 if let Some(task) = editor.confirm_rename(action, cx) {
312 task.detach_and_log_err(cx);
313 } else {
314 cx.propagate();
315 }
316 });
317 register_action(view, cx, |editor, action, cx| {
318 if let Some(task) = editor.find_all_references(action, cx) {
319 task.detach_and_log_err(cx);
320 } else {
321 cx.propagate();
322 }
323 });
324 register_action(view, cx, Editor::next_copilot_suggestion);
325 register_action(view, cx, Editor::previous_copilot_suggestion);
326 register_action(view, cx, Editor::copilot_suggest);
327 register_action(view, cx, Editor::context_menu_first);
328 register_action(view, cx, Editor::context_menu_prev);
329 register_action(view, cx, Editor::context_menu_next);
330 register_action(view, cx, Editor::context_menu_last);
331 register_action(view, cx, Editor::display_cursor_names);
332 }
333
334 fn register_key_listeners(&self, cx: &mut ElementContext) {
335 cx.on_key_event({
336 let editor = self.editor.clone();
337 move |event: &ModifiersChangedEvent, phase, cx| {
338 if phase != DispatchPhase::Bubble {
339 return;
340 }
341
342 if editor.update(cx, |editor, cx| Self::modifiers_changed(editor, event, cx)) {
343 cx.stop_propagation();
344 }
345 }
346 });
347 }
348
349 pub(crate) fn modifiers_changed(
350 editor: &mut Editor,
351 event: &ModifiersChangedEvent,
352 cx: &mut ViewContext<Editor>,
353 ) -> bool {
354 let pending_selection = editor.has_pending_selection();
355
356 if let Some(point) = &editor.link_go_to_definition_state.last_trigger_point {
357 if event.command && !pending_selection {
358 let point = point.clone();
359 let snapshot = editor.snapshot(cx);
360 let kind = point.definition_kind(event.shift);
361
362 show_link_definition(kind, editor, point, snapshot, cx);
363 return false;
364 }
365 }
366
367 {
368 if editor.link_go_to_definition_state.symbol_range.is_some()
369 || !editor.link_go_to_definition_state.definitions.is_empty()
370 {
371 editor.link_go_to_definition_state.symbol_range.take();
372 editor.link_go_to_definition_state.definitions.clear();
373 cx.notify();
374 }
375
376 editor.link_go_to_definition_state.task = None;
377
378 editor.clear_highlights::<LinkGoToDefinitionState>(cx);
379 }
380
381 false
382 }
383
384 fn mouse_left_down(
385 editor: &mut Editor,
386 event: &MouseDownEvent,
387 position_map: &PositionMap,
388 text_bounds: Bounds<Pixels>,
389 gutter_bounds: Bounds<Pixels>,
390 stacking_order: &StackingOrder,
391 cx: &mut ViewContext<Editor>,
392 ) {
393 let mut click_count = event.click_count;
394 let modifiers = event.modifiers;
395
396 if cx.default_prevented() {
397 return;
398 } else if gutter_bounds.contains(&event.position) {
399 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
400 } else if !text_bounds.contains(&event.position) {
401 return;
402 }
403 if !cx.was_top_layer(&event.position, stacking_order) {
404 return;
405 }
406
407 let point_for_position = position_map.point_for_position(text_bounds, event.position);
408 let position = point_for_position.previous_valid;
409 if modifiers.shift && modifiers.alt {
410 editor.select(
411 SelectPhase::BeginColumnar {
412 position,
413 goal_column: point_for_position.exact_unclipped.column(),
414 },
415 cx,
416 );
417 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
418 editor.select(
419 SelectPhase::Extend {
420 position,
421 click_count,
422 },
423 cx,
424 );
425 } else {
426 editor.select(
427 SelectPhase::Begin {
428 position,
429 add: modifiers.alt,
430 click_count,
431 },
432 cx,
433 );
434 }
435
436 cx.stop_propagation();
437 }
438
439 fn mouse_right_down(
440 editor: &mut Editor,
441 event: &MouseDownEvent,
442 position_map: &PositionMap,
443 text_bounds: Bounds<Pixels>,
444 cx: &mut ViewContext<Editor>,
445 ) {
446 if !text_bounds.contains(&event.position) {
447 return;
448 }
449 let point_for_position = position_map.point_for_position(text_bounds, event.position);
450 mouse_context_menu::deploy_context_menu(
451 editor,
452 event.position,
453 point_for_position.previous_valid,
454 cx,
455 );
456 cx.stop_propagation();
457 }
458
459 fn mouse_up(
460 editor: &mut Editor,
461 event: &MouseUpEvent,
462 position_map: &PositionMap,
463 text_bounds: Bounds<Pixels>,
464 interactive_bounds: &InteractiveBounds,
465 stacking_order: &StackingOrder,
466 cx: &mut ViewContext<Editor>,
467 ) {
468 let end_selection = editor.has_pending_selection();
469 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
470
471 if end_selection {
472 editor.select(SelectPhase::End, cx);
473 }
474
475 if interactive_bounds.visibly_contains(&event.position, cx)
476 && !pending_nonempty_selections
477 && event.modifiers.command
478 && text_bounds.contains(&event.position)
479 && cx.was_top_layer(&event.position, stacking_order)
480 {
481 let point = position_map.point_for_position(text_bounds, event.position);
482 let could_be_inlay = point.as_valid().is_none();
483 let split = event.modifiers.alt;
484 if event.modifiers.shift || could_be_inlay {
485 go_to_fetched_type_definition(editor, point, split, cx);
486 } else {
487 go_to_fetched_definition(editor, point, split, cx);
488 }
489
490 cx.stop_propagation();
491 } else if end_selection {
492 cx.stop_propagation();
493 }
494 }
495
496 fn mouse_dragged(
497 editor: &mut Editor,
498 event: &MouseMoveEvent,
499 position_map: &PositionMap,
500 text_bounds: Bounds<Pixels>,
501 _gutter_bounds: Bounds<Pixels>,
502 _stacking_order: &StackingOrder,
503 cx: &mut ViewContext<Editor>,
504 ) {
505 if !editor.has_pending_selection() {
506 return;
507 }
508
509 let point_for_position = position_map.point_for_position(text_bounds, event.position);
510 let mut scroll_delta = gpui::Point::<f32>::default();
511 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
512 let top = text_bounds.origin.y + vertical_margin;
513 let bottom = text_bounds.lower_left().y - vertical_margin;
514 if event.position.y < top {
515 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
516 }
517 if event.position.y > bottom {
518 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
519 }
520
521 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
522 let left = text_bounds.origin.x + horizontal_margin;
523 let right = text_bounds.upper_right().x - horizontal_margin;
524 if event.position.x < left {
525 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
526 }
527 if event.position.x > right {
528 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
529 }
530
531 editor.select(
532 SelectPhase::Update {
533 position: point_for_position.previous_valid,
534 goal_column: point_for_position.exact_unclipped.column(),
535 scroll_delta,
536 },
537 cx,
538 );
539 }
540
541 fn mouse_moved(
542 editor: &mut Editor,
543 event: &MouseMoveEvent,
544 position_map: &PositionMap,
545 text_bounds: Bounds<Pixels>,
546 gutter_bounds: Bounds<Pixels>,
547 stacking_order: &StackingOrder,
548 cx: &mut ViewContext<Editor>,
549 ) {
550 let modifiers = event.modifiers;
551 let text_hovered = text_bounds.contains(&event.position);
552 let gutter_hovered = gutter_bounds.contains(&event.position);
553 let was_top = cx.was_top_layer(&event.position, stacking_order);
554
555 editor.set_gutter_hovered(gutter_hovered, cx);
556
557 // Don't trigger hover popover if mouse is hovering over context menu
558 if text_hovered && was_top {
559 let point_for_position = position_map.point_for_position(text_bounds, event.position);
560
561 match point_for_position.as_valid() {
562 Some(point) => {
563 update_go_to_definition_link(
564 editor,
565 Some(GoToDefinitionTrigger::Text(point)),
566 modifiers.command,
567 modifiers.shift,
568 cx,
569 );
570 hover_at(editor, Some(point), cx);
571 Self::update_visible_cursor(editor, point, position_map, cx);
572 }
573 None => {
574 update_inlay_link_and_hover_points(
575 &position_map.snapshot,
576 point_for_position,
577 editor,
578 modifiers.command,
579 modifiers.shift,
580 cx,
581 );
582 }
583 }
584 } else {
585 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
586 hover_at(editor, None, cx);
587 if gutter_hovered && was_top {
588 cx.stop_propagation();
589 }
590 }
591 }
592
593 fn update_visible_cursor(
594 editor: &mut Editor,
595 point: DisplayPoint,
596 position_map: &PositionMap,
597 cx: &mut ViewContext<Editor>,
598 ) {
599 let snapshot = &position_map.snapshot;
600 let Some(hub) = editor.collaboration_hub() else {
601 return;
602 };
603 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
604 ..DisplayPoint::new(
605 point.row(),
606 (point.column() + 1).min(snapshot.line_len(point.row())),
607 );
608
609 let range = snapshot
610 .buffer_snapshot
611 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
612 ..snapshot
613 .buffer_snapshot
614 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
615
616 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
617 return;
618 };
619 let key = crate::HoveredCursor {
620 replica_id: selection.replica_id,
621 selection_id: selection.selection.id,
622 };
623 editor.hovered_cursors.insert(
624 key.clone(),
625 cx.spawn(|editor, mut cx| async move {
626 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
627 editor
628 .update(&mut cx, |editor, cx| {
629 editor.hovered_cursors.remove(&key);
630 cx.notify();
631 })
632 .ok();
633 }),
634 );
635 cx.notify()
636 }
637
638 fn paint_background(
639 &self,
640 gutter_bounds: Bounds<Pixels>,
641 text_bounds: Bounds<Pixels>,
642 layout: &LayoutState,
643 cx: &mut ElementContext,
644 ) {
645 let bounds = gutter_bounds.union(&text_bounds);
646 let scroll_top =
647 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
648 let gutter_bg = cx.theme().colors().editor_gutter_background;
649 cx.paint_quad(fill(gutter_bounds, gutter_bg));
650 cx.paint_quad(fill(text_bounds, self.style.background));
651
652 if let EditorMode::Full = layout.mode {
653 let mut active_rows = layout.active_rows.iter().peekable();
654 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
655 let mut end_row = *start_row;
656 while active_rows.peek().map_or(false, |r| {
657 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
658 }) {
659 active_rows.next().unwrap();
660 end_row += 1;
661 }
662
663 if !contains_non_empty_selection {
664 let origin = point(
665 bounds.origin.x,
666 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
667 - scroll_top,
668 );
669 let size = size(
670 bounds.size.width,
671 layout.position_map.line_height * (end_row - start_row + 1) as f32,
672 );
673 let active_line_bg = cx.theme().colors().editor_active_line_background;
674 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
675 }
676 }
677
678 if let Some(highlighted_rows) = &layout.highlighted_rows {
679 let origin = point(
680 bounds.origin.x,
681 bounds.origin.y
682 + (layout.position_map.line_height * highlighted_rows.start as f32)
683 - scroll_top,
684 );
685 let size = size(
686 bounds.size.width,
687 layout.position_map.line_height * highlighted_rows.len() as f32,
688 );
689 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
690 cx.paint_quad(fill(Bounds { origin, size }, highlighted_line_bg));
691 }
692
693 let scroll_left =
694 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
695
696 for (wrap_position, active) in layout.wrap_guides.iter() {
697 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
698 - scroll_left;
699
700 if x < text_bounds.origin.x
701 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
702 {
703 continue;
704 }
705
706 let color = if *active {
707 cx.theme().colors().editor_active_wrap_guide
708 } else {
709 cx.theme().colors().editor_wrap_guide
710 };
711 cx.paint_quad(fill(
712 Bounds {
713 origin: point(x, text_bounds.origin.y),
714 size: size(px(1.), text_bounds.size.height),
715 },
716 color,
717 ));
718 }
719 }
720 }
721
722 fn paint_gutter(
723 &mut self,
724 bounds: Bounds<Pixels>,
725 layout: &mut LayoutState,
726 cx: &mut ElementContext,
727 ) {
728 let line_height = layout.position_map.line_height;
729
730 let scroll_position = layout.position_map.snapshot.scroll_position();
731 let scroll_top = scroll_position.y * line_height;
732
733 let show_gutter = matches!(
734 ProjectSettings::get_global(cx).git.git_gutter,
735 Some(GitGutterSetting::TrackedFiles)
736 );
737
738 if show_gutter {
739 Self::paint_diff_hunks(bounds, layout, cx);
740 }
741
742 for (ix, line) in layout.line_numbers.iter().enumerate() {
743 if let Some(line) = line {
744 let line_origin = bounds.origin
745 + point(
746 bounds.size.width - line.width - layout.gutter_padding,
747 ix as f32 * line_height - (scroll_top % line_height),
748 );
749
750 line.paint(line_origin, line_height, cx).log_err();
751 }
752 }
753
754 cx.with_z_index(1, |cx| {
755 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
756 if let Some(fold_indicator) = fold_indicator {
757 let mut fold_indicator = fold_indicator.into_any_element();
758 let available_space = size(
759 AvailableSpace::MinContent,
760 AvailableSpace::Definite(line_height * 0.55),
761 );
762 let fold_indicator_size = fold_indicator.measure(available_space, cx);
763
764 let position = point(
765 bounds.size.width - layout.gutter_padding,
766 ix as f32 * line_height - (scroll_top % line_height),
767 );
768 let centering_offset = point(
769 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width)
770 / 2.,
771 (line_height - fold_indicator_size.height) / 2.,
772 );
773 let origin = bounds.origin + position + centering_offset;
774 fold_indicator.draw(origin, available_space, cx);
775 }
776 }
777
778 if let Some(indicator) = layout.code_actions_indicator.take() {
779 let mut button = indicator.button.into_any_element();
780 let available_space = size(
781 AvailableSpace::MinContent,
782 AvailableSpace::Definite(line_height),
783 );
784 let indicator_size = button.measure(available_space, cx);
785
786 let mut x = Pixels::ZERO;
787 let mut y = indicator.row as f32 * line_height - scroll_top;
788 // Center indicator.
789 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
790 y += (line_height - indicator_size.height) / 2.;
791
792 button.draw(bounds.origin + point(x, y), available_space, cx);
793 }
794 });
795 }
796
797 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut ElementContext) {
798 let line_height = layout.position_map.line_height;
799
800 let scroll_position = layout.position_map.snapshot.scroll_position();
801 let scroll_top = scroll_position.y * line_height;
802
803 for hunk in &layout.display_hunks {
804 let (display_row_range, status) = match hunk {
805 //TODO: This rendering is entirely a horrible hack
806 &DisplayDiffHunk::Folded { display_row: row } => {
807 let start_y = row as f32 * line_height - scroll_top;
808 let end_y = start_y + line_height;
809
810 let width = 0.275 * line_height;
811 let highlight_origin = bounds.origin + point(-width, start_y);
812 let highlight_size = size(width * 2., end_y - start_y);
813 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
814 cx.paint_quad(quad(
815 highlight_bounds,
816 Corners::all(1. * line_height),
817 cx.theme().status().modified,
818 Edges::default(),
819 transparent_black(),
820 ));
821
822 continue;
823 }
824
825 DisplayDiffHunk::Unfolded {
826 display_row_range,
827 status,
828 } => (display_row_range, status),
829 };
830
831 let color = match status {
832 DiffHunkStatus::Added => cx.theme().status().created,
833 DiffHunkStatus::Modified => cx.theme().status().modified,
834
835 //TODO: This rendering is entirely a horrible hack
836 DiffHunkStatus::Removed => {
837 let row = display_row_range.start;
838
839 let offset = line_height / 2.;
840 let start_y = row as f32 * line_height - offset - scroll_top;
841 let end_y = start_y + line_height;
842
843 let width = 0.275 * line_height;
844 let highlight_origin = bounds.origin + point(-width, start_y);
845 let highlight_size = size(width * 2., end_y - start_y);
846 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
847 cx.paint_quad(quad(
848 highlight_bounds,
849 Corners::all(1. * line_height),
850 cx.theme().status().deleted,
851 Edges::default(),
852 transparent_black(),
853 ));
854
855 continue;
856 }
857 };
858
859 let start_row = display_row_range.start;
860 let end_row = display_row_range.end;
861 // If we're in a multibuffer, row range span might include an
862 // excerpt header, so if we were to draw the marker straight away,
863 // the hunk might include the rows of that header.
864 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
865 // Instead, we simply check whether the range we're dealing with includes
866 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
867 let end_row_in_current_excerpt = layout
868 .position_map
869 .snapshot
870 .blocks_in_range(start_row..end_row)
871 .find_map(|(start_row, block)| {
872 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
873 Some(start_row)
874 } else {
875 None
876 }
877 })
878 .unwrap_or(end_row);
879
880 let start_y = start_row as f32 * line_height - scroll_top;
881 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
882
883 let width = 0.275 * line_height;
884 let highlight_origin = bounds.origin + point(-width, start_y);
885 let highlight_size = size(width * 2., end_y - start_y);
886 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
887 cx.paint_quad(quad(
888 highlight_bounds,
889 Corners::all(0.05 * line_height),
890 color,
891 Edges::default(),
892 transparent_black(),
893 ));
894 }
895 }
896
897 fn paint_text(
898 &mut self,
899 text_bounds: Bounds<Pixels>,
900 layout: &mut LayoutState,
901 cx: &mut ElementContext,
902 ) {
903 let start_row = layout.visible_display_row_range.start;
904 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
905 let line_end_overshoot = 0.15 * layout.position_map.line_height;
906 let whitespace_setting = self
907 .editor
908 .read(cx)
909 .buffer
910 .read(cx)
911 .settings_at(0, cx)
912 .show_whitespaces;
913
914 cx.with_content_mask(
915 Some(ContentMask {
916 bounds: text_bounds,
917 }),
918 |cx| {
919 let interactive_text_bounds = InteractiveBounds {
920 bounds: text_bounds,
921 stacking_order: cx.stacking_order().clone(),
922 };
923 if interactive_text_bounds.visibly_contains(&cx.mouse_position(), cx) {
924 if self
925 .editor
926 .read(cx)
927 .link_go_to_definition_state
928 .definitions
929 .is_empty()
930 {
931 cx.set_cursor_style(CursorStyle::IBeam);
932 } else {
933 cx.set_cursor_style(CursorStyle::PointingHand);
934 }
935 }
936
937 let fold_corner_radius = 0.15 * layout.position_map.line_height;
938 cx.with_element_id(Some("folds"), |cx| {
939 let snapshot = &layout.position_map.snapshot;
940
941 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
942 let fold_range = fold.range.clone();
943 let display_range = fold.range.start.to_display_point(&snapshot)
944 ..fold.range.end.to_display_point(&snapshot);
945 debug_assert_eq!(display_range.start.row(), display_range.end.row());
946 let row = display_range.start.row();
947 debug_assert!(row < layout.visible_display_row_range.end);
948 let Some(line_layout) = &layout
949 .position_map
950 .line_layouts
951 .get((row - layout.visible_display_row_range.start) as usize)
952 .map(|l| &l.line)
953 else {
954 continue;
955 };
956
957 let start_x = content_origin.x
958 + line_layout.x_for_index(display_range.start.column() as usize)
959 - layout.position_map.scroll_position.x;
960 let start_y = content_origin.y
961 + row as f32 * layout.position_map.line_height
962 - layout.position_map.scroll_position.y;
963 let end_x = content_origin.x
964 + line_layout.x_for_index(display_range.end.column() as usize)
965 - layout.position_map.scroll_position.x;
966
967 let fold_bounds = Bounds {
968 origin: point(start_x, start_y),
969 size: size(end_x - start_x, layout.position_map.line_height),
970 };
971
972 let fold_background = cx.with_z_index(1, |cx| {
973 div()
974 .id(fold.id)
975 .size_full()
976 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
977 .on_click(cx.listener_for(
978 &self.editor,
979 move |editor: &mut Editor, _, cx| {
980 editor.unfold_ranges(
981 [fold_range.start..fold_range.end],
982 true,
983 false,
984 cx,
985 );
986 cx.stop_propagation();
987 },
988 ))
989 .draw_and_update_state(
990 fold_bounds.origin,
991 fold_bounds.size,
992 cx,
993 |fold_element_state, cx| {
994 if fold_element_state.is_active() {
995 cx.theme().colors().ghost_element_active
996 } else if fold_bounds.contains(&cx.mouse_position()) {
997 cx.theme().colors().ghost_element_hover
998 } else {
999 cx.theme().colors().ghost_element_background
1000 }
1001 },
1002 )
1003 });
1004
1005 self.paint_highlighted_range(
1006 display_range.clone(),
1007 fold_background,
1008 fold_corner_radius,
1009 fold_corner_radius * 2.,
1010 layout,
1011 content_origin,
1012 text_bounds,
1013 cx,
1014 );
1015 }
1016 });
1017
1018 for (range, color) in &layout.highlighted_ranges {
1019 self.paint_highlighted_range(
1020 range.clone(),
1021 *color,
1022 Pixels::ZERO,
1023 line_end_overshoot,
1024 layout,
1025 content_origin,
1026 text_bounds,
1027 cx,
1028 );
1029 }
1030
1031 let mut cursors = SmallVec::<[Cursor; 32]>::new();
1032 let corner_radius = 0.15 * layout.position_map.line_height;
1033 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
1034
1035 for (participant_ix, (selection_style, selections)) in
1036 layout.selections.iter().enumerate()
1037 {
1038 for selection in selections.into_iter() {
1039 self.paint_highlighted_range(
1040 selection.range.clone(),
1041 selection_style.selection,
1042 corner_radius,
1043 corner_radius * 2.,
1044 layout,
1045 content_origin,
1046 text_bounds,
1047 cx,
1048 );
1049
1050 if selection.is_local && !selection.range.is_empty() {
1051 invisible_display_ranges.push(selection.range.clone());
1052 }
1053
1054 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
1055 let cursor_position = selection.head;
1056 if layout
1057 .visible_display_row_range
1058 .contains(&cursor_position.row())
1059 {
1060 let cursor_row_layout = &layout.position_map.line_layouts
1061 [(cursor_position.row() - start_row) as usize]
1062 .line;
1063 let cursor_column = cursor_position.column() as usize;
1064
1065 let cursor_character_x =
1066 cursor_row_layout.x_for_index(cursor_column);
1067 let mut block_width = cursor_row_layout
1068 .x_for_index(cursor_column + 1)
1069 - cursor_character_x;
1070 if block_width == Pixels::ZERO {
1071 block_width = layout.position_map.em_width;
1072 }
1073 let block_text = if let CursorShape::Block = selection.cursor_shape
1074 {
1075 layout
1076 .position_map
1077 .snapshot
1078 .chars_at(cursor_position)
1079 .next()
1080 .and_then(|(character, _)| {
1081 let text = if character == '\n' {
1082 SharedString::from(" ")
1083 } else {
1084 SharedString::from(character.to_string())
1085 };
1086 let len = text.len();
1087 cx.text_system()
1088 .shape_line(
1089 text,
1090 cursor_row_layout.font_size,
1091 &[TextRun {
1092 len,
1093 font: self.style.text.font(),
1094 color: self.style.background,
1095 background_color: None,
1096 underline: None,
1097 }],
1098 )
1099 .log_err()
1100 })
1101 } else {
1102 None
1103 };
1104
1105 let x = cursor_character_x - layout.position_map.scroll_position.x;
1106 let y = cursor_position.row() as f32
1107 * layout.position_map.line_height
1108 - layout.position_map.scroll_position.y;
1109 if selection.is_newest {
1110 self.editor.update(cx, |editor, _| {
1111 editor.pixel_position_of_newest_cursor = Some(point(
1112 text_bounds.origin.x + x + block_width / 2.,
1113 text_bounds.origin.y
1114 + y
1115 + layout.position_map.line_height / 2.,
1116 ))
1117 });
1118 }
1119
1120 cursors.push(Cursor {
1121 color: selection_style.cursor,
1122 block_width,
1123 origin: point(x, y),
1124 line_height: layout.position_map.line_height,
1125 shape: selection.cursor_shape,
1126 block_text,
1127 cursor_name: selection.user_name.clone().map(|name| {
1128 CursorName {
1129 string: name,
1130 color: self.style.background,
1131 is_top_row: cursor_position.row() == 0,
1132 z_index: (participant_ix % 256).try_into().unwrap(),
1133 }
1134 }),
1135 });
1136 }
1137 }
1138 }
1139 }
1140
1141 for (ix, line_with_invisibles) in
1142 layout.position_map.line_layouts.iter().enumerate()
1143 {
1144 let row = start_row + ix as u32;
1145 line_with_invisibles.draw(
1146 layout,
1147 row,
1148 content_origin,
1149 whitespace_setting,
1150 &invisible_display_ranges,
1151 cx,
1152 )
1153 }
1154
1155 cx.with_z_index(0, |cx| {
1156 for cursor in cursors {
1157 cursor.paint(content_origin, cx);
1158 }
1159 });
1160 },
1161 )
1162 }
1163
1164 fn paint_overlays(
1165 &mut self,
1166 text_bounds: Bounds<Pixels>,
1167 layout: &mut LayoutState,
1168 cx: &mut ElementContext,
1169 ) {
1170 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
1171 let start_row = layout.visible_display_row_range.start;
1172 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1173 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1174 let context_menu_size = context_menu.measure(available_space, cx);
1175
1176 let cursor_row_layout =
1177 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1178 let x = cursor_row_layout.x_for_index(position.column() as usize)
1179 - layout.position_map.scroll_position.x;
1180 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1181 - layout.position_map.scroll_position.y;
1182 let mut list_origin = content_origin + point(x, y);
1183 let list_width = context_menu_size.width;
1184 let list_height = context_menu_size.height;
1185
1186 // Snap the right edge of the list to the right edge of the window if
1187 // its horizontal bounds overflow.
1188 if list_origin.x + list_width > cx.viewport_size().width {
1189 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1190 }
1191
1192 if list_origin.y + list_height > text_bounds.lower_right().y {
1193 list_origin.y -= layout.position_map.line_height + list_height;
1194 }
1195
1196 cx.break_content_mask(|cx| context_menu.draw(list_origin, available_space, cx));
1197 }
1198
1199 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1200 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1201
1202 // This is safe because we check on layout whether the required row is available
1203 let hovered_row_layout =
1204 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1205
1206 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1207 // height. This is the size we will use to decide whether to render popovers above or below
1208 // the hovered line.
1209 let first_size = hover_popovers[0].measure(available_space, cx);
1210 let height_to_reserve =
1211 first_size.height + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1212
1213 // Compute Hovered Point
1214 let x = hovered_row_layout.x_for_index(position.column() as usize)
1215 - layout.position_map.scroll_position.x;
1216 let y = position.row() as f32 * layout.position_map.line_height
1217 - layout.position_map.scroll_position.y;
1218 let hovered_point = content_origin + point(x, y);
1219
1220 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1221 // There is enough space above. Render popovers above the hovered point
1222 let mut current_y = hovered_point.y;
1223 for mut hover_popover in hover_popovers {
1224 let size = hover_popover.measure(available_space, cx);
1225 let mut popover_origin = point(hovered_point.x, current_y - size.height);
1226
1227 let x_out_of_bounds =
1228 text_bounds.upper_right().x - (popover_origin.x + size.width);
1229 if x_out_of_bounds < Pixels::ZERO {
1230 popover_origin.x = popover_origin.x + x_out_of_bounds;
1231 }
1232
1233 if cx.was_top_layer(&popover_origin, cx.stacking_order()) {
1234 cx.break_content_mask(|cx| {
1235 hover_popover.draw(popover_origin, available_space, cx)
1236 });
1237 }
1238
1239 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1240 }
1241 } else {
1242 // There is not enough space above. Render popovers below the hovered point
1243 let mut current_y = hovered_point.y + layout.position_map.line_height;
1244 for mut hover_popover in hover_popovers {
1245 let size = hover_popover.measure(available_space, cx);
1246 let mut popover_origin = point(hovered_point.x, current_y);
1247
1248 let x_out_of_bounds =
1249 text_bounds.upper_right().x - (popover_origin.x + size.width);
1250 if x_out_of_bounds < Pixels::ZERO {
1251 popover_origin.x = popover_origin.x + x_out_of_bounds;
1252 }
1253
1254 hover_popover.draw(popover_origin, available_space, cx);
1255
1256 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1257 }
1258 }
1259 }
1260
1261 if let Some(mouse_context_menu) = self.editor.read(cx).mouse_context_menu.as_ref() {
1262 let element = overlay()
1263 .position(mouse_context_menu.position)
1264 .child(mouse_context_menu.context_menu.clone())
1265 .anchor(AnchorCorner::TopLeft)
1266 .snap_to_window();
1267 element.into_any().draw(
1268 gpui::Point::default(),
1269 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1270 cx,
1271 );
1272 }
1273 }
1274
1275 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1276 bounds.upper_right().x - self.style.scrollbar_width
1277 }
1278
1279 fn paint_scrollbar(
1280 &mut self,
1281 bounds: Bounds<Pixels>,
1282 layout: &mut LayoutState,
1283 cx: &mut ElementContext,
1284 ) {
1285 if layout.mode != EditorMode::Full {
1286 return;
1287 }
1288
1289 // If a drag took place after we started dragging the scrollbar,
1290 // cancel the scrollbar drag.
1291 if cx.has_active_drag() {
1292 self.editor.update(cx, |editor, cx| {
1293 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1294 });
1295 }
1296
1297 let top = bounds.origin.y;
1298 let bottom = bounds.lower_left().y;
1299 let right = bounds.lower_right().x;
1300 let left = self.scrollbar_left(&bounds);
1301 let row_range = layout.scrollbar_row_range.clone();
1302 let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1303
1304 let mut height = bounds.size.height;
1305 let mut first_row_y_offset = px(0.0);
1306
1307 // Impose a minimum height on the scrollbar thumb
1308 let row_height = height / max_row;
1309 let min_thumb_height = layout.position_map.line_height;
1310 let thumb_height = (row_range.end - row_range.start) * row_height;
1311 if thumb_height < min_thumb_height {
1312 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1313 height -= min_thumb_height - thumb_height;
1314 }
1315
1316 let y_for_row = |row: f32| -> Pixels { top + first_row_y_offset + row * row_height };
1317
1318 let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1319 let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1320 let track_bounds = Bounds::from_corners(point(left, top), point(right, bottom));
1321 let thumb_bounds = Bounds::from_corners(point(left, thumb_top), point(right, thumb_bottom));
1322
1323 if layout.show_scrollbars {
1324 cx.paint_quad(quad(
1325 track_bounds,
1326 Corners::default(),
1327 cx.theme().colors().scrollbar_track_background,
1328 Edges {
1329 top: Pixels::ZERO,
1330 right: Pixels::ZERO,
1331 bottom: Pixels::ZERO,
1332 left: px(1.),
1333 },
1334 cx.theme().colors().scrollbar_track_border,
1335 ));
1336 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1337 if layout.is_singleton && scrollbar_settings.selections {
1338 let start_anchor = Anchor::min();
1339 let end_anchor = Anchor::max();
1340 let background_ranges = self
1341 .editor
1342 .read(cx)
1343 .background_highlight_row_ranges::<BufferSearchHighlights>(
1344 start_anchor..end_anchor,
1345 &layout.position_map.snapshot,
1346 50000,
1347 );
1348 for range in background_ranges {
1349 let start_y = y_for_row(range.start().row() as f32);
1350 let mut end_y = y_for_row(range.end().row() as f32);
1351 if end_y - start_y < px(1.) {
1352 end_y = start_y + px(1.);
1353 }
1354 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1355 cx.paint_quad(quad(
1356 bounds,
1357 Corners::default(),
1358 cx.theme().status().info,
1359 Edges {
1360 top: Pixels::ZERO,
1361 right: px(1.),
1362 bottom: Pixels::ZERO,
1363 left: px(1.),
1364 },
1365 cx.theme().colors().scrollbar_thumb_border,
1366 ));
1367 }
1368 }
1369
1370 if layout.is_singleton && scrollbar_settings.symbols_selections {
1371 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
1372 Anchor::min()..Anchor::max(),
1373 &layout.position_map.snapshot,
1374 cx.theme().colors(),
1375 );
1376 for hunk in selection_ranges {
1377 let start_display = Point::new(hunk.0.start.row(), 0)
1378 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1379 let end_display = Point::new(hunk.0.end.row(), 0)
1380 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1381 let start_y = y_for_row(start_display.row() as f32);
1382 let mut end_y = if hunk.0.start == hunk.0.end {
1383 y_for_row((end_display.row() + 1) as f32)
1384 } else {
1385 y_for_row((end_display.row()) as f32)
1386 };
1387
1388 if end_y - start_y < px(1.) {
1389 end_y = start_y + px(1.);
1390 }
1391 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1392
1393 cx.paint_quad(quad(
1394 bounds,
1395 Corners::default(),
1396 cx.theme().status().info,
1397 Edges {
1398 top: Pixels::ZERO,
1399 right: px(1.),
1400 bottom: Pixels::ZERO,
1401 left: px(1.),
1402 },
1403 cx.theme().colors().scrollbar_thumb_border,
1404 ));
1405 }
1406 }
1407
1408 if layout.is_singleton && scrollbar_settings.git_diff {
1409 for hunk in layout
1410 .position_map
1411 .snapshot
1412 .buffer_snapshot
1413 .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1414 {
1415 let start_display = Point::new(hunk.buffer_range.start, 0)
1416 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1417 let end_display = Point::new(hunk.buffer_range.end, 0)
1418 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1419 let start_y = y_for_row(start_display.row() as f32);
1420 let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1421 y_for_row((end_display.row() + 1) as f32)
1422 } else {
1423 y_for_row((end_display.row()) as f32)
1424 };
1425
1426 if end_y - start_y < px(1.) {
1427 end_y = start_y + px(1.);
1428 }
1429 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1430
1431 let color = match hunk.status() {
1432 DiffHunkStatus::Added => cx.theme().status().created,
1433 DiffHunkStatus::Modified => cx.theme().status().modified,
1434 DiffHunkStatus::Removed => cx.theme().status().deleted,
1435 };
1436 cx.paint_quad(quad(
1437 bounds,
1438 Corners::default(),
1439 color,
1440 Edges {
1441 top: Pixels::ZERO,
1442 right: px(1.),
1443 bottom: Pixels::ZERO,
1444 left: px(1.),
1445 },
1446 cx.theme().colors().scrollbar_thumb_border,
1447 ));
1448 }
1449 }
1450
1451 cx.paint_quad(quad(
1452 thumb_bounds,
1453 Corners::default(),
1454 cx.theme().colors().scrollbar_thumb_background,
1455 Edges {
1456 top: Pixels::ZERO,
1457 right: px(1.),
1458 bottom: Pixels::ZERO,
1459 left: px(1.),
1460 },
1461 cx.theme().colors().scrollbar_thumb_border,
1462 ));
1463 }
1464
1465 let interactive_track_bounds = InteractiveBounds {
1466 bounds: track_bounds,
1467 stacking_order: cx.stacking_order().clone(),
1468 };
1469 let mut mouse_position = cx.mouse_position();
1470 if interactive_track_bounds.visibly_contains(&mouse_position, cx) {
1471 cx.set_cursor_style(CursorStyle::Arrow);
1472 }
1473
1474 cx.on_mouse_event({
1475 let editor = self.editor.clone();
1476 move |event: &MouseMoveEvent, phase, cx| {
1477 if phase == DispatchPhase::Capture {
1478 return;
1479 }
1480
1481 editor.update(cx, |editor, cx| {
1482 if event.pressed_button == Some(MouseButton::Left)
1483 && editor.scroll_manager.is_dragging_scrollbar()
1484 {
1485 let y = mouse_position.y;
1486 let new_y = event.position.y;
1487 if (track_bounds.top()..track_bounds.bottom()).contains(&y) {
1488 let mut position = editor.scroll_position(cx);
1489 position.y += (new_y - y) * (max_row as f32) / height;
1490 if position.y < 0.0 {
1491 position.y = 0.0;
1492 }
1493 editor.set_scroll_position(position, cx);
1494 }
1495
1496 mouse_position = event.position;
1497 cx.stop_propagation();
1498 } else {
1499 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1500 if interactive_track_bounds.visibly_contains(&event.position, cx) {
1501 editor.scroll_manager.show_scrollbar(cx);
1502 }
1503 }
1504 })
1505 }
1506 });
1507
1508 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
1509 cx.on_mouse_event({
1510 let editor = self.editor.clone();
1511 move |_: &MouseUpEvent, phase, cx| {
1512 if phase == DispatchPhase::Capture {
1513 return;
1514 }
1515
1516 editor.update(cx, |editor, cx| {
1517 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1518 cx.stop_propagation();
1519 });
1520 }
1521 });
1522 } else {
1523 cx.on_mouse_event({
1524 let editor = self.editor.clone();
1525 move |event: &MouseDownEvent, phase, cx| {
1526 if phase == DispatchPhase::Capture {
1527 return;
1528 }
1529
1530 editor.update(cx, |editor, cx| {
1531 if track_bounds.contains(&event.position) {
1532 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
1533
1534 let y = event.position.y;
1535 if y < thumb_top || thumb_bottom < y {
1536 let center_row =
1537 ((y - top) * max_row as f32 / height).round() as u32;
1538 let top_row = center_row
1539 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1540 let mut position = editor.scroll_position(cx);
1541 position.y = top_row as f32;
1542 editor.set_scroll_position(position, cx);
1543 } else {
1544 editor.scroll_manager.show_scrollbar(cx);
1545 }
1546
1547 cx.stop_propagation();
1548 }
1549 });
1550 }
1551 });
1552 }
1553 }
1554
1555 #[allow(clippy::too_many_arguments)]
1556 fn paint_highlighted_range(
1557 &self,
1558 range: Range<DisplayPoint>,
1559 color: Hsla,
1560 corner_radius: Pixels,
1561 line_end_overshoot: Pixels,
1562 layout: &LayoutState,
1563 content_origin: gpui::Point<Pixels>,
1564 bounds: Bounds<Pixels>,
1565 cx: &mut ElementContext,
1566 ) {
1567 let start_row = layout.visible_display_row_range.start;
1568 let end_row = layout.visible_display_row_range.end;
1569 if range.start != range.end {
1570 let row_range = if range.end.column() == 0 {
1571 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1572 } else {
1573 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1574 };
1575
1576 let highlighted_range = HighlightedRange {
1577 color,
1578 line_height: layout.position_map.line_height,
1579 corner_radius,
1580 start_y: content_origin.y
1581 + row_range.start as f32 * layout.position_map.line_height
1582 - layout.position_map.scroll_position.y,
1583 lines: row_range
1584 .into_iter()
1585 .map(|row| {
1586 let line_layout =
1587 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1588 HighlightedRangeLine {
1589 start_x: if row == range.start.row() {
1590 content_origin.x
1591 + line_layout.x_for_index(range.start.column() as usize)
1592 - layout.position_map.scroll_position.x
1593 } else {
1594 content_origin.x - layout.position_map.scroll_position.x
1595 },
1596 end_x: if row == range.end.row() {
1597 content_origin.x
1598 + line_layout.x_for_index(range.end.column() as usize)
1599 - layout.position_map.scroll_position.x
1600 } else {
1601 content_origin.x + line_layout.width + line_end_overshoot
1602 - layout.position_map.scroll_position.x
1603 },
1604 }
1605 })
1606 .collect(),
1607 };
1608
1609 highlighted_range.paint(bounds, cx);
1610 }
1611 }
1612
1613 fn paint_blocks(
1614 &mut self,
1615 bounds: Bounds<Pixels>,
1616 layout: &mut LayoutState,
1617 cx: &mut ElementContext,
1618 ) {
1619 let scroll_position = layout.position_map.snapshot.scroll_position();
1620 let scroll_left = scroll_position.x * layout.position_map.em_width;
1621 let scroll_top = scroll_position.y * layout.position_map.line_height;
1622
1623 for mut block in layout.blocks.drain(..) {
1624 let mut origin = bounds.origin
1625 + point(
1626 Pixels::ZERO,
1627 block.row as f32 * layout.position_map.line_height - scroll_top,
1628 );
1629 if !matches!(block.style, BlockStyle::Sticky) {
1630 origin += point(-scroll_left, Pixels::ZERO);
1631 }
1632 block.element.draw(origin, block.available_space, cx);
1633 }
1634 }
1635
1636 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1637 let style = &self.style;
1638 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1639 let layout = cx
1640 .text_system()
1641 .shape_line(
1642 SharedString::from(" ".repeat(column)),
1643 font_size,
1644 &[TextRun {
1645 len: column,
1646 font: style.text.font(),
1647 color: Hsla::default(),
1648 background_color: None,
1649 underline: None,
1650 }],
1651 )
1652 .unwrap();
1653
1654 layout.width
1655 }
1656
1657 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1658 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1659 self.column_pixels(digit_count, cx)
1660 }
1661
1662 //Folds contained in a hunk are ignored apart from shrinking visual size
1663 //If a fold contains any hunks then that fold line is marked as modified
1664 fn layout_git_gutters(
1665 &self,
1666 display_rows: Range<u32>,
1667 snapshot: &EditorSnapshot,
1668 ) -> Vec<DisplayDiffHunk> {
1669 let buffer_snapshot = &snapshot.buffer_snapshot;
1670
1671 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1672 .to_point(snapshot)
1673 .row;
1674 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1675 .to_point(snapshot)
1676 .row;
1677
1678 buffer_snapshot
1679 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1680 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1681 .dedup()
1682 .collect()
1683 }
1684
1685 fn calculate_relative_line_numbers(
1686 &self,
1687 snapshot: &EditorSnapshot,
1688 rows: &Range<u32>,
1689 relative_to: Option<u32>,
1690 ) -> HashMap<u32, u32> {
1691 let mut relative_rows: HashMap<u32, u32> = Default::default();
1692 let Some(relative_to) = relative_to else {
1693 return relative_rows;
1694 };
1695
1696 let start = rows.start.min(relative_to);
1697 let end = rows.end.max(relative_to);
1698
1699 let buffer_rows = snapshot
1700 .buffer_rows(start)
1701 .take(1 + (end - start) as usize)
1702 .collect::<Vec<_>>();
1703
1704 let head_idx = relative_to - start;
1705 let mut delta = 1;
1706 let mut i = head_idx + 1;
1707 while i < buffer_rows.len() as u32 {
1708 if buffer_rows[i as usize].is_some() {
1709 if rows.contains(&(i + start)) {
1710 relative_rows.insert(i + start, delta);
1711 }
1712 delta += 1;
1713 }
1714 i += 1;
1715 }
1716 delta = 1;
1717 i = head_idx.min(buffer_rows.len() as u32 - 1);
1718 while i > 0 && buffer_rows[i as usize].is_none() {
1719 i -= 1;
1720 }
1721
1722 while i > 0 {
1723 i -= 1;
1724 if buffer_rows[i as usize].is_some() {
1725 if rows.contains(&(i + start)) {
1726 relative_rows.insert(i + start, delta);
1727 }
1728 delta += 1;
1729 }
1730 }
1731
1732 relative_rows
1733 }
1734
1735 fn shape_line_numbers(
1736 &self,
1737 rows: Range<u32>,
1738 active_rows: &BTreeMap<u32, bool>,
1739 newest_selection_head: DisplayPoint,
1740 is_singleton: bool,
1741 snapshot: &EditorSnapshot,
1742 cx: &ViewContext<Editor>,
1743 ) -> (
1744 Vec<Option<ShapedLine>>,
1745 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1746 ) {
1747 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1748 let include_line_numbers = snapshot.mode == EditorMode::Full;
1749 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1750 let mut fold_statuses = Vec::with_capacity(rows.len());
1751 let mut line_number = String::new();
1752 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1753 let relative_to = if is_relative {
1754 Some(newest_selection_head.row())
1755 } else {
1756 None
1757 };
1758
1759 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1760
1761 for (ix, row) in snapshot
1762 .buffer_rows(rows.start)
1763 .take((rows.end - rows.start) as usize)
1764 .enumerate()
1765 {
1766 let display_row = rows.start + ix as u32;
1767 let (active, color) = if active_rows.contains_key(&display_row) {
1768 (true, cx.theme().colors().editor_active_line_number)
1769 } else {
1770 (false, cx.theme().colors().editor_line_number)
1771 };
1772 if let Some(buffer_row) = row {
1773 if include_line_numbers {
1774 line_number.clear();
1775 let default_number = buffer_row + 1;
1776 let number = relative_rows
1777 .get(&(ix as u32 + rows.start))
1778 .unwrap_or(&default_number);
1779 write!(&mut line_number, "{}", number).unwrap();
1780 let run = TextRun {
1781 len: line_number.len(),
1782 font: self.style.text.font(),
1783 color,
1784 background_color: None,
1785 underline: None,
1786 };
1787 let shaped_line = cx
1788 .text_system()
1789 .shape_line(line_number.clone().into(), font_size, &[run])
1790 .unwrap();
1791 shaped_line_numbers.push(Some(shaped_line));
1792 fold_statuses.push(
1793 is_singleton
1794 .then(|| {
1795 snapshot
1796 .fold_for_line(buffer_row)
1797 .map(|fold_status| (fold_status, buffer_row, active))
1798 })
1799 .flatten(),
1800 )
1801 }
1802 } else {
1803 fold_statuses.push(None);
1804 shaped_line_numbers.push(None);
1805 }
1806 }
1807
1808 (shaped_line_numbers, fold_statuses)
1809 }
1810
1811 fn layout_lines(
1812 &self,
1813 rows: Range<u32>,
1814 line_number_layouts: &[Option<ShapedLine>],
1815 snapshot: &EditorSnapshot,
1816 cx: &ViewContext<Editor>,
1817 ) -> Vec<LineWithInvisibles> {
1818 if rows.start >= rows.end {
1819 return Vec::new();
1820 }
1821
1822 // Show the placeholder when the editor is empty
1823 if snapshot.is_empty() {
1824 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1825 let placeholder_color = cx.theme().colors().text_placeholder;
1826 let placeholder_text = snapshot.placeholder_text();
1827
1828 let placeholder_lines = placeholder_text
1829 .as_ref()
1830 .map_or("", AsRef::as_ref)
1831 .split('\n')
1832 .skip(rows.start as usize)
1833 .chain(iter::repeat(""))
1834 .take(rows.len());
1835 placeholder_lines
1836 .filter_map(move |line| {
1837 let run = TextRun {
1838 len: line.len(),
1839 font: self.style.text.font(),
1840 color: placeholder_color,
1841 background_color: None,
1842 underline: Default::default(),
1843 };
1844 cx.text_system()
1845 .shape_line(line.to_string().into(), font_size, &[run])
1846 .log_err()
1847 })
1848 .map(|line| LineWithInvisibles {
1849 line,
1850 invisibles: Vec::new(),
1851 })
1852 .collect()
1853 } else {
1854 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1855 LineWithInvisibles::from_chunks(
1856 chunks,
1857 &self.style.text,
1858 MAX_LINE_LEN,
1859 rows.len() as usize,
1860 line_number_layouts,
1861 snapshot.mode,
1862 cx,
1863 )
1864 }
1865 }
1866
1867 fn compute_layout(&mut self, bounds: Bounds<Pixels>, cx: &mut ElementContext) -> LayoutState {
1868 self.editor.update(cx, |editor, cx| {
1869 let snapshot = editor.snapshot(cx);
1870 let style = self.style.clone();
1871
1872 let font_id = cx.text_system().resolve_font(&style.text.font());
1873 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1874 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1875 let em_width = cx
1876 .text_system()
1877 .typographic_bounds(font_id, font_size, 'm')
1878 .unwrap()
1879 .size
1880 .width;
1881 let em_advance = cx
1882 .text_system()
1883 .advance(font_id, font_size, 'm')
1884 .unwrap()
1885 .width;
1886
1887 let gutter_dimensions = snapshot.gutter_dimensions(font_id, font_size, em_width, self.max_line_number_width(&snapshot, cx), cx);
1888
1889 editor.gutter_width = gutter_dimensions.width;
1890
1891 let text_width = bounds.size.width - gutter_dimensions.width;
1892 let overscroll = size(em_width, px(0.));
1893 let _snapshot = {
1894 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1895
1896 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
1897 let wrap_width = match editor.soft_wrap_mode(cx) {
1898 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1899 SoftWrap::EditorWidth => editor_width,
1900 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1901 };
1902
1903 if editor.set_wrap_width(Some(wrap_width), cx) {
1904 editor.snapshot(cx)
1905 } else {
1906 snapshot
1907 }
1908 };
1909
1910 let wrap_guides = editor
1911 .wrap_guides(cx)
1912 .iter()
1913 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1914 .collect::<SmallVec<[_; 2]>>();
1915
1916 let gutter_size = size(gutter_dimensions.width, bounds.size.height);
1917 let text_size = size(text_width, bounds.size.height);
1918
1919 let autoscroll_horizontally =
1920 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1921 let mut snapshot = editor.snapshot(cx);
1922
1923 let scroll_position = snapshot.scroll_position();
1924 // The scroll position is a fractional point, the whole number of which represents
1925 // the top of the window in terms of display rows.
1926 let start_row = scroll_position.y as u32;
1927 let height_in_lines = f32::from(bounds.size.height / line_height);
1928 let max_row = snapshot.max_point().row();
1929
1930 // Add 1 to ensure selections bleed off screen
1931 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1932
1933 let start_anchor = if start_row == 0 {
1934 Anchor::min()
1935 } else {
1936 snapshot
1937 .buffer_snapshot
1938 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1939 };
1940 let end_anchor = if end_row > max_row {
1941 Anchor::max()
1942 } else {
1943 snapshot
1944 .buffer_snapshot
1945 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1946 };
1947
1948 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1949 let mut active_rows = BTreeMap::new();
1950 let is_singleton = editor.is_singleton(cx);
1951
1952 let highlighted_rows = editor.highlighted_rows();
1953 let highlighted_ranges = editor.background_highlights_in_range(
1954 start_anchor..end_anchor,
1955 &snapshot.display_snapshot,
1956 cx.theme().colors(),
1957 );
1958
1959 let mut newest_selection_head = None;
1960
1961 if editor.show_local_selections {
1962 let mut local_selections: Vec<Selection<Point>> = editor
1963 .selections
1964 .disjoint_in_range(start_anchor..end_anchor, cx);
1965 local_selections.extend(editor.selections.pending(cx));
1966 let mut layouts = Vec::new();
1967 let newest = editor.selections.newest(cx);
1968 for selection in local_selections.drain(..) {
1969 let is_empty = selection.start == selection.end;
1970 let is_newest = selection == newest;
1971
1972 let layout = SelectionLayout::new(
1973 selection,
1974 editor.selections.line_mode,
1975 editor.cursor_shape,
1976 &snapshot.display_snapshot,
1977 is_newest,
1978 true,
1979 None,
1980 );
1981 if is_newest {
1982 newest_selection_head = Some(layout.head);
1983 }
1984
1985 for row in cmp::max(layout.active_rows.start, start_row)
1986 ..=cmp::min(layout.active_rows.end, end_row)
1987 {
1988 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1989 *contains_non_empty_selection |= !is_empty;
1990 }
1991 layouts.push(layout);
1992 }
1993
1994 let player = if editor.read_only(cx) {
1995 cx.theme().players().read_only()
1996 } else {
1997 style.local_player
1998 };
1999
2000 selections.push((player, layouts));
2001 }
2002
2003 if let Some(collaboration_hub) = &editor.collaboration_hub {
2004 // When following someone, render the local selections in their color.
2005 if let Some(leader_id) = editor.leader_peer_id {
2006 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2007 if let Some(participant_index) = collaboration_hub
2008 .user_participant_indices(cx)
2009 .get(&collaborator.user_id)
2010 {
2011 if let Some((local_selection_style, _)) = selections.first_mut() {
2012 *local_selection_style = cx
2013 .theme()
2014 .players()
2015 .color_for_participant(participant_index.0);
2016 }
2017 }
2018 }
2019 }
2020
2021 let mut remote_selections = HashMap::default();
2022 for selection in snapshot.remote_selections_in_range(
2023 &(start_anchor..end_anchor),
2024 collaboration_hub.as_ref(),
2025 cx,
2026 ) {
2027 let selection_style = if let Some(participant_index) = selection.participant_index {
2028 cx.theme()
2029 .players()
2030 .color_for_participant(participant_index.0)
2031 } else {
2032 cx.theme().players().absent()
2033 };
2034
2035 // Don't re-render the leader's selections, since the local selections
2036 // match theirs.
2037 if Some(selection.peer_id) == editor.leader_peer_id {
2038 continue;
2039 }
2040 let key = HoveredCursor{replica_id: selection.replica_id, selection_id: selection.selection.id};
2041
2042 let is_shown = editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
2043
2044 remote_selections
2045 .entry(selection.replica_id)
2046 .or_insert((selection_style, Vec::new()))
2047 .1
2048 .push(SelectionLayout::new(
2049 selection.selection,
2050 selection.line_mode,
2051 selection.cursor_shape,
2052 &snapshot.display_snapshot,
2053 false,
2054 false,
2055 if is_shown {
2056 selection.user_name
2057 } else {
2058 None
2059 },
2060 ));
2061 }
2062
2063 selections.extend(remote_selections.into_values());
2064 }
2065
2066 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2067 let show_scrollbars = match scrollbar_settings.show {
2068 ShowScrollbar::Auto => {
2069 // Git
2070 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2071 ||
2072 // Selections
2073 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
2074 ||
2075 // Symbols Selections
2076 (is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
2077 ||
2078 // Scrollmanager
2079 editor.scroll_manager.scrollbars_visible()
2080 }
2081 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2082 ShowScrollbar::Always => true,
2083 ShowScrollbar::Never => false,
2084 };
2085
2086 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2087 let newest = editor.selections.newest::<Point>(cx);
2088 SelectionLayout::new(
2089 newest,
2090 editor.selections.line_mode,
2091 editor.cursor_shape,
2092 &snapshot.display_snapshot,
2093 true,
2094 true,
2095 None,
2096 )
2097 .head
2098 });
2099
2100 let (line_numbers, fold_statuses) = self.shape_line_numbers(
2101 start_row..end_row,
2102 &active_rows,
2103 head_for_relative,
2104 is_singleton,
2105 &snapshot,
2106 cx,
2107 );
2108
2109 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2110
2111 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2112
2113 let mut max_visible_line_width = Pixels::ZERO;
2114 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
2115 for line_with_invisibles in &line_layouts {
2116 if line_with_invisibles.line.width > max_visible_line_width {
2117 max_visible_line_width = line_with_invisibles.line.width;
2118 }
2119 }
2120
2121 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
2122 .unwrap()
2123 .width;
2124 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
2125
2126 let editor_view = cx.view().clone();
2127 let (scroll_width, blocks) = cx.with_element_context(|cx| {
2128 cx.with_element_id(Some("editor_blocks"), |cx| {
2129 self.layout_blocks(
2130 start_row..end_row,
2131 &snapshot,
2132 bounds.size.width,
2133 scroll_width,
2134 text_width,
2135 gutter_dimensions.padding,
2136 gutter_dimensions.width,
2137 em_width,
2138 gutter_dimensions.width + gutter_dimensions.margin,
2139 line_height,
2140 &style,
2141 &line_layouts,
2142 editor,
2143 editor_view,
2144 cx,
2145 )
2146 })
2147 });
2148
2149 let scroll_max = point(
2150 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
2151 max_row as f32,
2152 );
2153
2154 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2155
2156 let autoscrolled = if autoscroll_horizontally {
2157 editor.autoscroll_horizontally(
2158 start_row,
2159 text_size.width,
2160 scroll_width,
2161 em_width,
2162 &line_layouts,
2163 cx,
2164 )
2165 } else {
2166 false
2167 };
2168
2169 if clamped || autoscrolled {
2170 snapshot = editor.snapshot(cx);
2171 }
2172
2173 let mut context_menu = None;
2174 let mut code_actions_indicator = None;
2175 if let Some(newest_selection_head) = newest_selection_head {
2176 if (start_row..end_row).contains(&newest_selection_head.row()) {
2177 if editor.context_menu_visible() {
2178 let max_height = cmp::min(
2179 12. * line_height,
2180 cmp::max(
2181 3. * line_height,
2182 (bounds.size.height - line_height) / 2.,
2183 )
2184 );
2185 context_menu =
2186 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2187 }
2188
2189 let active = matches!(
2190 editor.context_menu.read().as_ref(),
2191 Some(crate::ContextMenu::CodeActions(_))
2192 );
2193
2194 code_actions_indicator = editor
2195 .render_code_actions_indicator(&style, active, cx)
2196 .map(|element| CodeActionsIndicator {
2197 row: newest_selection_head.row(),
2198 button: element,
2199 });
2200 }
2201 }
2202
2203 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2204 let max_size = size(
2205 (120. * em_width) // Default size
2206 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2207 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2208 (16. * line_height) // Default size
2209 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2210 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2211 );
2212
2213 let hover = if context_menu.is_some() {
2214 None
2215 } else {
2216 editor.hover_state.render(
2217 &snapshot,
2218 &style,
2219 visible_rows,
2220 max_size,
2221 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2222 cx,
2223 )
2224 };
2225
2226 let editor_view = cx.view().clone();
2227 let fold_indicators = cx.with_element_context(|cx| {
2228
2229 cx.with_element_id(Some("gutter_fold_indicators"), |_cx| {
2230 editor.render_fold_indicators(
2231 fold_statuses,
2232 &style,
2233 editor.gutter_hovered,
2234 line_height,
2235 gutter_dimensions.margin,
2236 editor_view,
2237 )
2238 })
2239 });
2240
2241 let invisible_symbol_font_size = font_size / 2.;
2242 let tab_invisible = cx
2243 .text_system()
2244 .shape_line(
2245 "→".into(),
2246 invisible_symbol_font_size,
2247 &[TextRun {
2248 len: "→".len(),
2249 font: self.style.text.font(),
2250 color: cx.theme().colors().editor_invisible,
2251 background_color: None,
2252 underline: None,
2253 }],
2254 )
2255 .unwrap();
2256 let space_invisible = cx
2257 .text_system()
2258 .shape_line(
2259 "•".into(),
2260 invisible_symbol_font_size,
2261 &[TextRun {
2262 len: "•".len(),
2263 font: self.style.text.font(),
2264 color: cx.theme().colors().editor_invisible,
2265 background_color: None,
2266 underline: None,
2267 }],
2268 )
2269 .unwrap();
2270
2271 LayoutState {
2272 mode: snapshot.mode,
2273 position_map: Arc::new(PositionMap {
2274 size: bounds.size,
2275 scroll_position: point(
2276 scroll_position.x * em_width,
2277 scroll_position.y * line_height,
2278 ),
2279 scroll_max,
2280 line_layouts,
2281 line_height,
2282 em_width,
2283 em_advance,
2284 snapshot,
2285 }),
2286 visible_anchor_range: start_anchor..end_anchor,
2287 visible_display_row_range: start_row..end_row,
2288 wrap_guides,
2289 gutter_size,
2290 gutter_padding: gutter_dimensions.padding,
2291 text_size,
2292 scrollbar_row_range,
2293 show_scrollbars,
2294 is_singleton,
2295 max_row,
2296 gutter_margin: gutter_dimensions.margin,
2297 active_rows,
2298 highlighted_rows,
2299 highlighted_ranges,
2300 line_numbers,
2301 display_hunks,
2302 blocks,
2303 selections,
2304 context_menu,
2305 code_actions_indicator,
2306 fold_indicators,
2307 tab_invisible,
2308 space_invisible,
2309 hover_popovers: hover,
2310 }
2311 })
2312 }
2313
2314 #[allow(clippy::too_many_arguments)]
2315 fn layout_blocks(
2316 &self,
2317 rows: Range<u32>,
2318 snapshot: &EditorSnapshot,
2319 editor_width: Pixels,
2320 scroll_width: Pixels,
2321 text_width: Pixels,
2322 gutter_padding: Pixels,
2323 gutter_width: Pixels,
2324 em_width: Pixels,
2325 text_x: Pixels,
2326 line_height: Pixels,
2327 style: &EditorStyle,
2328 line_layouts: &[LineWithInvisibles],
2329 editor: &mut Editor,
2330 editor_view: View<Editor>,
2331 cx: &mut ElementContext,
2332 ) -> (Pixels, Vec<BlockLayout>) {
2333 let mut block_id = 0;
2334 let (fixed_blocks, non_fixed_blocks) = snapshot
2335 .blocks_in_range(rows.clone())
2336 .partition::<Vec<_>, _>(|(_, block)| match block {
2337 TransformBlock::ExcerptHeader { .. } => false,
2338 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2339 });
2340
2341 let render_block = |block: &TransformBlock,
2342 available_space: Size<AvailableSpace>,
2343 block_id: usize,
2344 editor: &mut Editor,
2345 cx: &mut ElementContext| {
2346 let mut element = match block {
2347 TransformBlock::Custom(block) => {
2348 let align_to = block
2349 .position()
2350 .to_point(&snapshot.buffer_snapshot)
2351 .to_display_point(snapshot);
2352 let anchor_x = text_x
2353 + if rows.contains(&align_to.row()) {
2354 line_layouts[(align_to.row() - rows.start) as usize]
2355 .line
2356 .x_for_index(align_to.column() as usize)
2357 } else {
2358 layout_line(align_to.row(), snapshot, style, cx)
2359 .unwrap()
2360 .x_for_index(align_to.column() as usize)
2361 };
2362
2363 block.render(&mut BlockContext {
2364 context: cx,
2365 anchor_x,
2366 gutter_padding,
2367 line_height,
2368 gutter_width,
2369 em_width,
2370 block_id,
2371 max_width: scroll_width.max(text_width),
2372 view: editor_view.clone(),
2373 editor_style: &self.style,
2374 })
2375 }
2376
2377 TransformBlock::ExcerptHeader {
2378 buffer,
2379 range,
2380 starts_new_buffer,
2381 ..
2382 } => {
2383 let include_root = editor
2384 .project
2385 .as_ref()
2386 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2387 .unwrap_or_default();
2388
2389 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2390 let jump_path = ProjectPath {
2391 worktree_id: file.worktree_id(cx),
2392 path: file.path.clone(),
2393 };
2394 let jump_anchor = range
2395 .primary
2396 .as_ref()
2397 .map_or(range.context.start, |primary| primary.start);
2398 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2399
2400 cx.listener_for(&self.editor, move |editor, _, cx| {
2401 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2402 })
2403 });
2404
2405 let element = if *starts_new_buffer {
2406 let path = buffer.resolve_file_path(cx, include_root);
2407 let mut filename = None;
2408 let mut parent_path = None;
2409 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2410 if let Some(path) = path {
2411 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2412 parent_path = path
2413 .parent()
2414 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2415 }
2416
2417 v_flex()
2418 .id(("path header container", block_id))
2419 .size_full()
2420 .justify_center()
2421 .p(gpui::px(6.))
2422 .child(
2423 h_flex()
2424 .id("path header block")
2425 .size_full()
2426 .pl(gpui::px(12.))
2427 .pr(gpui::px(8.))
2428 .rounded_md()
2429 .shadow_md()
2430 .border()
2431 .border_color(cx.theme().colors().border)
2432 .bg(cx.theme().colors().editor_subheader_background)
2433 .justify_between()
2434 .hover(|style| style.bg(cx.theme().colors().element_hover))
2435 .child(
2436 h_flex().gap_3().child(
2437 h_flex()
2438 .gap_2()
2439 .child(
2440 filename
2441 .map(SharedString::from)
2442 .unwrap_or_else(|| "untitled".into()),
2443 )
2444 .when_some(parent_path, |then, path| {
2445 then.child(
2446 div().child(path).text_color(
2447 cx.theme().colors().text_muted,
2448 ),
2449 )
2450 }),
2451 ),
2452 )
2453 .when_some(jump_handler, |this, jump_handler| {
2454 this.cursor_pointer()
2455 .tooltip(|cx| {
2456 Tooltip::for_action(
2457 "Jump to Buffer",
2458 &OpenExcerpts,
2459 cx,
2460 )
2461 })
2462 .on_mouse_down(MouseButton::Left, |_, cx| {
2463 cx.stop_propagation()
2464 })
2465 .on_click(jump_handler)
2466 }),
2467 )
2468 } else {
2469 h_flex()
2470 .id(("collapsed context", block_id))
2471 .size_full()
2472 .gap(gutter_padding)
2473 .child(
2474 h_flex()
2475 .justify_end()
2476 .flex_none()
2477 .w(gutter_width - gutter_padding)
2478 .h_full()
2479 .text_buffer(cx)
2480 .text_color(cx.theme().colors().editor_line_number)
2481 .child("..."),
2482 )
2483 .child(
2484 ButtonLike::new("jump to collapsed context")
2485 .style(ButtonStyle::Transparent)
2486 .full_width()
2487 .child(
2488 div()
2489 .h_px()
2490 .w_full()
2491 .bg(cx.theme().colors().border_variant)
2492 .group_hover("", |style| {
2493 style.bg(cx.theme().colors().border)
2494 }),
2495 )
2496 .when_some(jump_handler, |this, jump_handler| {
2497 this.on_click(jump_handler).tooltip(|cx| {
2498 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2499 })
2500 }),
2501 )
2502 };
2503 element.into_any()
2504 }
2505 };
2506
2507 let size = element.measure(available_space, cx);
2508 (element, size)
2509 };
2510
2511 let mut fixed_block_max_width = Pixels::ZERO;
2512 let mut blocks = Vec::new();
2513 for (row, block) in fixed_blocks {
2514 let available_space = size(
2515 AvailableSpace::MinContent,
2516 AvailableSpace::Definite(block.height() as f32 * line_height),
2517 );
2518 let (element, element_size) =
2519 render_block(block, available_space, block_id, editor, cx);
2520 block_id += 1;
2521 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2522 blocks.push(BlockLayout {
2523 row,
2524 element,
2525 available_space,
2526 style: BlockStyle::Fixed,
2527 });
2528 }
2529 for (row, block) in non_fixed_blocks {
2530 let style = match block {
2531 TransformBlock::Custom(block) => block.style(),
2532 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2533 };
2534 let width = match style {
2535 BlockStyle::Sticky => editor_width,
2536 BlockStyle::Flex => editor_width
2537 .max(fixed_block_max_width)
2538 .max(gutter_width + scroll_width),
2539 BlockStyle::Fixed => unreachable!(),
2540 };
2541 let available_space = size(
2542 AvailableSpace::Definite(width),
2543 AvailableSpace::Definite(block.height() as f32 * line_height),
2544 );
2545 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2546 block_id += 1;
2547 blocks.push(BlockLayout {
2548 row,
2549 element,
2550 available_space,
2551 style,
2552 });
2553 }
2554 (
2555 scroll_width.max(fixed_block_max_width - gutter_width),
2556 blocks,
2557 )
2558 }
2559
2560 fn paint_scroll_wheel_listener(
2561 &mut self,
2562 interactive_bounds: &InteractiveBounds,
2563 layout: &LayoutState,
2564 cx: &mut ElementContext,
2565 ) {
2566 cx.on_mouse_event({
2567 let position_map = layout.position_map.clone();
2568 let editor = self.editor.clone();
2569 let interactive_bounds = interactive_bounds.clone();
2570 let mut delta = ScrollDelta::default();
2571
2572 move |event: &ScrollWheelEvent, phase, cx| {
2573 if phase == DispatchPhase::Bubble
2574 && interactive_bounds.visibly_contains(&event.position, cx)
2575 {
2576 delta = delta.coalesce(event.delta);
2577 editor.update(cx, |editor, cx| {
2578 let position = event.position;
2579 let position_map: &PositionMap = &position_map;
2580 let bounds = &interactive_bounds;
2581 if !bounds.visibly_contains(&position, cx) {
2582 return;
2583 }
2584
2585 let line_height = position_map.line_height;
2586 let max_glyph_width = position_map.em_width;
2587 let (delta, axis) = match delta {
2588 gpui::ScrollDelta::Pixels(mut pixels) => {
2589 //Trackpad
2590 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2591 (pixels, axis)
2592 }
2593
2594 gpui::ScrollDelta::Lines(lines) => {
2595 //Not trackpad
2596 let pixels =
2597 point(lines.x * max_glyph_width, lines.y * line_height);
2598 (pixels, None)
2599 }
2600 };
2601
2602 let scroll_position = position_map.snapshot.scroll_position();
2603 let x = f32::from(
2604 (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width,
2605 );
2606 let y =
2607 f32::from((scroll_position.y * line_height - delta.y) / line_height);
2608 let scroll_position =
2609 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2610 editor.scroll(scroll_position, axis, cx);
2611 cx.stop_propagation();
2612 });
2613 }
2614 }
2615 });
2616 }
2617
2618 fn paint_mouse_listeners(
2619 &mut self,
2620 bounds: Bounds<Pixels>,
2621 gutter_bounds: Bounds<Pixels>,
2622 text_bounds: Bounds<Pixels>,
2623 layout: &LayoutState,
2624 cx: &mut ElementContext,
2625 ) {
2626 let interactive_bounds = InteractiveBounds {
2627 bounds: bounds.intersect(&cx.content_mask().bounds),
2628 stacking_order: cx.stacking_order().clone(),
2629 };
2630
2631 self.paint_scroll_wheel_listener(&interactive_bounds, layout, cx);
2632
2633 cx.on_mouse_event({
2634 let position_map = layout.position_map.clone();
2635 let editor = self.editor.clone();
2636 let stacking_order = cx.stacking_order().clone();
2637 let interactive_bounds = interactive_bounds.clone();
2638
2639 move |event: &MouseDownEvent, phase, cx| {
2640 if phase == DispatchPhase::Bubble
2641 && interactive_bounds.visibly_contains(&event.position, cx)
2642 {
2643 match event.button {
2644 MouseButton::Left => editor.update(cx, |editor, cx| {
2645 Self::mouse_left_down(
2646 editor,
2647 event,
2648 &position_map,
2649 text_bounds,
2650 gutter_bounds,
2651 &stacking_order,
2652 cx,
2653 );
2654 }),
2655 MouseButton::Right => editor.update(cx, |editor, cx| {
2656 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx);
2657 }),
2658 _ => {}
2659 };
2660 }
2661 }
2662 });
2663
2664 cx.on_mouse_event({
2665 let position_map = layout.position_map.clone();
2666 let editor = self.editor.clone();
2667 let stacking_order = cx.stacking_order().clone();
2668 let interactive_bounds = interactive_bounds.clone();
2669
2670 move |event: &MouseUpEvent, phase, cx| {
2671 if phase == DispatchPhase::Bubble {
2672 editor.update(cx, |editor, cx| {
2673 Self::mouse_up(
2674 editor,
2675 event,
2676 &position_map,
2677 text_bounds,
2678 &interactive_bounds,
2679 &stacking_order,
2680 cx,
2681 )
2682 });
2683 }
2684 }
2685 });
2686 cx.on_mouse_event({
2687 let position_map = layout.position_map.clone();
2688 let editor = self.editor.clone();
2689 let stacking_order = cx.stacking_order().clone();
2690
2691 move |event: &MouseMoveEvent, phase, cx| {
2692 // if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
2693
2694 if phase == DispatchPhase::Bubble {
2695 editor.update(cx, |editor, cx| {
2696 if event.pressed_button == Some(MouseButton::Left) {
2697 Self::mouse_dragged(
2698 editor,
2699 event,
2700 &position_map,
2701 text_bounds,
2702 gutter_bounds,
2703 &stacking_order,
2704 cx,
2705 )
2706 }
2707
2708 if interactive_bounds.visibly_contains(&event.position, cx) {
2709 Self::mouse_moved(
2710 editor,
2711 event,
2712 &position_map,
2713 text_bounds,
2714 gutter_bounds,
2715 &stacking_order,
2716 cx,
2717 )
2718 }
2719 });
2720 }
2721 }
2722 });
2723 }
2724}
2725
2726#[derive(Debug)]
2727pub(crate) struct LineWithInvisibles {
2728 pub line: ShapedLine,
2729 invisibles: Vec<Invisible>,
2730}
2731
2732impl LineWithInvisibles {
2733 fn from_chunks<'a>(
2734 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2735 text_style: &TextStyle,
2736 max_line_len: usize,
2737 max_line_count: usize,
2738 line_number_layouts: &[Option<ShapedLine>],
2739 editor_mode: EditorMode,
2740 cx: &WindowContext,
2741 ) -> Vec<Self> {
2742 let mut layouts = Vec::with_capacity(max_line_count);
2743 let mut line = String::new();
2744 let mut invisibles = Vec::new();
2745 let mut styles = Vec::new();
2746 let mut non_whitespace_added = false;
2747 let mut row = 0;
2748 let mut line_exceeded_max_len = false;
2749 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2750
2751 for highlighted_chunk in chunks.chain([HighlightedChunk {
2752 chunk: "\n",
2753 style: None,
2754 is_tab: false,
2755 }]) {
2756 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2757 if ix > 0 {
2758 let shaped_line = cx
2759 .text_system()
2760 .shape_line(line.clone().into(), font_size, &styles)
2761 .unwrap();
2762 layouts.push(Self {
2763 line: shaped_line,
2764 invisibles: invisibles.drain(..).collect(),
2765 });
2766
2767 line.clear();
2768 styles.clear();
2769 row += 1;
2770 line_exceeded_max_len = false;
2771 non_whitespace_added = false;
2772 if row == max_line_count {
2773 return layouts;
2774 }
2775 }
2776
2777 if !line_chunk.is_empty() && !line_exceeded_max_len {
2778 let text_style = if let Some(style) = highlighted_chunk.style {
2779 Cow::Owned(text_style.clone().highlight(style))
2780 } else {
2781 Cow::Borrowed(text_style)
2782 };
2783
2784 if line.len() + line_chunk.len() > max_line_len {
2785 let mut chunk_len = max_line_len - line.len();
2786 while !line_chunk.is_char_boundary(chunk_len) {
2787 chunk_len -= 1;
2788 }
2789 line_chunk = &line_chunk[..chunk_len];
2790 line_exceeded_max_len = true;
2791 }
2792
2793 styles.push(TextRun {
2794 len: line_chunk.len(),
2795 font: text_style.font(),
2796 color: text_style.color,
2797 background_color: text_style.background_color,
2798 underline: text_style.underline,
2799 });
2800
2801 if editor_mode == EditorMode::Full {
2802 // Line wrap pads its contents with fake whitespaces,
2803 // avoid printing them
2804 let inside_wrapped_string = line_number_layouts
2805 .get(row)
2806 .and_then(|layout| layout.as_ref())
2807 .is_none();
2808 if highlighted_chunk.is_tab {
2809 if non_whitespace_added || !inside_wrapped_string {
2810 invisibles.push(Invisible::Tab {
2811 line_start_offset: line.len(),
2812 });
2813 }
2814 } else {
2815 invisibles.extend(
2816 line_chunk
2817 .chars()
2818 .enumerate()
2819 .filter(|(_, line_char)| {
2820 let is_whitespace = line_char.is_whitespace();
2821 non_whitespace_added |= !is_whitespace;
2822 is_whitespace
2823 && (non_whitespace_added || !inside_wrapped_string)
2824 })
2825 .map(|(whitespace_index, _)| Invisible::Whitespace {
2826 line_offset: line.len() + whitespace_index,
2827 }),
2828 )
2829 }
2830 }
2831
2832 line.push_str(line_chunk);
2833 }
2834 }
2835 }
2836
2837 layouts
2838 }
2839
2840 fn draw(
2841 &self,
2842 layout: &LayoutState,
2843 row: u32,
2844 content_origin: gpui::Point<Pixels>,
2845 whitespace_setting: ShowWhitespaceSetting,
2846 selection_ranges: &[Range<DisplayPoint>],
2847 cx: &mut ElementContext,
2848 ) {
2849 let line_height = layout.position_map.line_height;
2850 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2851
2852 self.line
2853 .paint(
2854 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2855 line_height,
2856 cx,
2857 )
2858 .log_err();
2859
2860 self.draw_invisibles(
2861 &selection_ranges,
2862 layout,
2863 content_origin,
2864 line_y,
2865 row,
2866 line_height,
2867 whitespace_setting,
2868 cx,
2869 );
2870 }
2871
2872 fn draw_invisibles(
2873 &self,
2874 selection_ranges: &[Range<DisplayPoint>],
2875 layout: &LayoutState,
2876 content_origin: gpui::Point<Pixels>,
2877 line_y: Pixels,
2878 row: u32,
2879 line_height: Pixels,
2880 whitespace_setting: ShowWhitespaceSetting,
2881 cx: &mut ElementContext,
2882 ) {
2883 let allowed_invisibles_regions = match whitespace_setting {
2884 ShowWhitespaceSetting::None => return,
2885 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2886 ShowWhitespaceSetting::All => None,
2887 };
2888
2889 for invisible in &self.invisibles {
2890 let (&token_offset, invisible_symbol) = match invisible {
2891 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2892 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2893 };
2894
2895 let x_offset = self.line.x_for_index(token_offset);
2896 let invisible_offset =
2897 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2898 let origin = content_origin
2899 + gpui::point(
2900 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2901 line_y,
2902 );
2903
2904 if let Some(allowed_regions) = allowed_invisibles_regions {
2905 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2906 if !allowed_regions
2907 .iter()
2908 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2909 {
2910 continue;
2911 }
2912 }
2913 invisible_symbol.paint(origin, line_height, cx).log_err();
2914 }
2915 }
2916}
2917
2918#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2919enum Invisible {
2920 Tab { line_start_offset: usize },
2921 Whitespace { line_offset: usize },
2922}
2923
2924impl Element for EditorElement {
2925 type State = ();
2926
2927 fn request_layout(
2928 &mut self,
2929 _element_state: Option<Self::State>,
2930 cx: &mut gpui::ElementContext,
2931 ) -> (gpui::LayoutId, Self::State) {
2932 cx.with_view_id(self.editor.entity_id(), |cx| {
2933 self.editor.update(cx, |editor, cx| {
2934 editor.set_style(self.style.clone(), cx);
2935
2936 let layout_id = match editor.mode {
2937 EditorMode::SingleLine => {
2938 let rem_size = cx.rem_size();
2939 let mut style = Style::default();
2940 style.size.width = relative(1.).into();
2941 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2942 cx.with_element_context(|cx| cx.request_layout(&style, None))
2943 }
2944 EditorMode::AutoHeight { max_lines } => {
2945 let editor_handle = cx.view().clone();
2946 let max_line_number_width =
2947 self.max_line_number_width(&editor.snapshot(cx), cx);
2948 cx.with_element_context(|cx| {
2949 cx.request_measured_layout(
2950 Style::default(),
2951 move |known_dimensions, _, cx| {
2952 editor_handle
2953 .update(cx, |editor, cx| {
2954 compute_auto_height_layout(
2955 editor,
2956 max_lines,
2957 max_line_number_width,
2958 known_dimensions,
2959 cx,
2960 )
2961 })
2962 .unwrap_or_default()
2963 },
2964 )
2965 })
2966 }
2967 EditorMode::Full => {
2968 let mut style = Style::default();
2969 style.size.width = relative(1.).into();
2970 style.size.height = relative(1.).into();
2971 cx.with_element_context(|cx| cx.request_layout(&style, None))
2972 }
2973 };
2974
2975 (layout_id, ())
2976 })
2977 })
2978 }
2979
2980 fn paint(
2981 &mut self,
2982 bounds: Bounds<gpui::Pixels>,
2983 _element_state: &mut Self::State,
2984 cx: &mut gpui::ElementContext,
2985 ) {
2986 let editor = self.editor.clone();
2987
2988 cx.paint_view(self.editor.entity_id(), |cx| {
2989 cx.with_text_style(
2990 Some(gpui::TextStyleRefinement {
2991 font_size: Some(self.style.text.font_size),
2992 line_height: Some(self.style.text.line_height),
2993 ..Default::default()
2994 }),
2995 |cx| {
2996 let mut layout = self.compute_layout(bounds, cx);
2997 let gutter_bounds = Bounds {
2998 origin: bounds.origin,
2999 size: layout.gutter_size,
3000 };
3001 let text_bounds = Bounds {
3002 origin: gutter_bounds.upper_right(),
3003 size: layout.text_size,
3004 };
3005
3006 let focus_handle = editor.focus_handle(cx);
3007 let key_context = self.editor.read(cx).key_context(cx);
3008 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
3009 self.register_actions(cx);
3010 self.register_key_listeners(cx);
3011
3012 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3013 cx.handle_input(
3014 &focus_handle,
3015 ElementInputHandler::new(bounds, self.editor.clone()),
3016 );
3017
3018 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
3019 if layout.gutter_size.width > Pixels::ZERO {
3020 self.paint_gutter(gutter_bounds, &mut layout, cx);
3021 }
3022 self.paint_text(text_bounds, &mut layout, cx);
3023
3024 cx.with_z_index(0, |cx| {
3025 self.paint_mouse_listeners(
3026 bounds,
3027 gutter_bounds,
3028 text_bounds,
3029 &layout,
3030 cx,
3031 );
3032 });
3033 if !layout.blocks.is_empty() {
3034 cx.with_z_index(0, |cx| {
3035 cx.with_element_id(Some("editor_blocks"), |cx| {
3036 self.paint_blocks(bounds, &mut layout, cx);
3037 });
3038 })
3039 }
3040
3041 cx.with_z_index(1, |cx| {
3042 self.paint_overlays(text_bounds, &mut layout, cx);
3043 });
3044
3045 cx.with_z_index(2, |cx| self.paint_scrollbar(bounds, &mut layout, cx));
3046 });
3047 })
3048 },
3049 )
3050 })
3051 }
3052}
3053
3054impl IntoElement for EditorElement {
3055 type Element = Self;
3056
3057 fn element_id(&self) -> Option<gpui::ElementId> {
3058 self.editor.element_id()
3059 }
3060
3061 fn into_element(self) -> Self::Element {
3062 self
3063 }
3064}
3065
3066type BufferRow = u32;
3067
3068pub struct LayoutState {
3069 position_map: Arc<PositionMap>,
3070 gutter_size: Size<Pixels>,
3071 gutter_padding: Pixels,
3072 gutter_margin: Pixels,
3073 text_size: gpui::Size<Pixels>,
3074 mode: EditorMode,
3075 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3076 visible_anchor_range: Range<Anchor>,
3077 visible_display_row_range: Range<u32>,
3078 active_rows: BTreeMap<u32, bool>,
3079 highlighted_rows: Option<Range<u32>>,
3080 line_numbers: Vec<Option<ShapedLine>>,
3081 display_hunks: Vec<DisplayDiffHunk>,
3082 blocks: Vec<BlockLayout>,
3083 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3084 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3085 scrollbar_row_range: Range<f32>,
3086 show_scrollbars: bool,
3087 is_singleton: bool,
3088 max_row: u32,
3089 context_menu: Option<(DisplayPoint, AnyElement)>,
3090 code_actions_indicator: Option<CodeActionsIndicator>,
3091 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3092 fold_indicators: Vec<Option<IconButton>>,
3093 tab_invisible: ShapedLine,
3094 space_invisible: ShapedLine,
3095}
3096
3097struct CodeActionsIndicator {
3098 row: u32,
3099 button: IconButton,
3100}
3101
3102struct PositionMap {
3103 size: Size<Pixels>,
3104 line_height: Pixels,
3105 scroll_position: gpui::Point<Pixels>,
3106 scroll_max: gpui::Point<f32>,
3107 em_width: Pixels,
3108 em_advance: Pixels,
3109 line_layouts: Vec<LineWithInvisibles>,
3110 snapshot: EditorSnapshot,
3111}
3112
3113#[derive(Debug, Copy, Clone)]
3114pub struct PointForPosition {
3115 pub previous_valid: DisplayPoint,
3116 pub next_valid: DisplayPoint,
3117 pub exact_unclipped: DisplayPoint,
3118 pub column_overshoot_after_line_end: u32,
3119}
3120
3121impl PointForPosition {
3122 #[cfg(test)]
3123 pub fn valid(valid: DisplayPoint) -> Self {
3124 Self {
3125 previous_valid: valid,
3126 next_valid: valid,
3127 exact_unclipped: valid,
3128 column_overshoot_after_line_end: 0,
3129 }
3130 }
3131
3132 pub fn as_valid(&self) -> Option<DisplayPoint> {
3133 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3134 Some(self.previous_valid)
3135 } else {
3136 None
3137 }
3138 }
3139}
3140
3141impl PositionMap {
3142 fn point_for_position(
3143 &self,
3144 text_bounds: Bounds<Pixels>,
3145 position: gpui::Point<Pixels>,
3146 ) -> PointForPosition {
3147 let scroll_position = self.snapshot.scroll_position();
3148 let position = position - text_bounds.origin;
3149 let y = position.y.max(px(0.)).min(self.size.height);
3150 let x = position.x + (scroll_position.x * self.em_width);
3151 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3152
3153 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3154 .line_layouts
3155 .get(row as usize - scroll_position.y as usize)
3156 .map(|&LineWithInvisibles { ref line, .. }| line)
3157 {
3158 if let Some(ix) = line.index_for_x(x) {
3159 (ix as u32, px(0.))
3160 } else {
3161 (line.len as u32, px(0.).max(x - line.width))
3162 }
3163 } else {
3164 (0, x)
3165 };
3166
3167 let mut exact_unclipped = DisplayPoint::new(row, column);
3168 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3169 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3170
3171 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3172 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3173 PointForPosition {
3174 previous_valid,
3175 next_valid,
3176 exact_unclipped,
3177 column_overshoot_after_line_end,
3178 }
3179 }
3180}
3181
3182struct BlockLayout {
3183 row: u32,
3184 element: AnyElement,
3185 available_space: Size<AvailableSpace>,
3186 style: BlockStyle,
3187}
3188
3189fn layout_line(
3190 row: u32,
3191 snapshot: &EditorSnapshot,
3192 style: &EditorStyle,
3193 cx: &WindowContext,
3194) -> Result<ShapedLine> {
3195 let mut line = snapshot.line(row);
3196
3197 if line.len() > MAX_LINE_LEN {
3198 let mut len = MAX_LINE_LEN;
3199 while !line.is_char_boundary(len) {
3200 len -= 1;
3201 }
3202
3203 line.truncate(len);
3204 }
3205
3206 cx.text_system().shape_line(
3207 line.into(),
3208 style.text.font_size.to_pixels(cx.rem_size()),
3209 &[TextRun {
3210 len: snapshot.line_len(row) as usize,
3211 font: style.text.font(),
3212 color: Hsla::default(),
3213 background_color: None,
3214 underline: None,
3215 }],
3216 )
3217}
3218
3219#[derive(Debug)]
3220pub struct Cursor {
3221 origin: gpui::Point<Pixels>,
3222 block_width: Pixels,
3223 line_height: Pixels,
3224 color: Hsla,
3225 shape: CursorShape,
3226 block_text: Option<ShapedLine>,
3227 cursor_name: Option<CursorName>,
3228}
3229
3230#[derive(Debug)]
3231pub struct CursorName {
3232 string: SharedString,
3233 color: Hsla,
3234 is_top_row: bool,
3235 z_index: u16,
3236}
3237
3238impl Cursor {
3239 pub fn new(
3240 origin: gpui::Point<Pixels>,
3241 block_width: Pixels,
3242 line_height: Pixels,
3243 color: Hsla,
3244 shape: CursorShape,
3245 block_text: Option<ShapedLine>,
3246 cursor_name: Option<CursorName>,
3247 ) -> Cursor {
3248 Cursor {
3249 origin,
3250 block_width,
3251 line_height,
3252 color,
3253 shape,
3254 block_text,
3255 cursor_name,
3256 }
3257 }
3258
3259 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3260 Bounds {
3261 origin: self.origin + origin,
3262 size: size(self.block_width, self.line_height),
3263 }
3264 }
3265
3266 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3267 let bounds = match self.shape {
3268 CursorShape::Bar => Bounds {
3269 origin: self.origin + origin,
3270 size: size(px(2.0), self.line_height),
3271 },
3272 CursorShape::Block | CursorShape::Hollow => Bounds {
3273 origin: self.origin + origin,
3274 size: size(self.block_width, self.line_height),
3275 },
3276 CursorShape::Underscore => Bounds {
3277 origin: self.origin
3278 + origin
3279 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3280 size: size(self.block_width, px(2.0)),
3281 },
3282 };
3283
3284 //Draw background or border quad
3285 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3286 outline(bounds, self.color)
3287 } else {
3288 fill(bounds, self.color)
3289 };
3290
3291 if let Some(name) = &self.cursor_name {
3292 let text_size = self.line_height / 1.5;
3293
3294 let name_origin = if name.is_top_row {
3295 point(bounds.right() - px(1.), bounds.top())
3296 } else {
3297 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3298 };
3299 cx.with_z_index(name.z_index, |cx| {
3300 div()
3301 .bg(self.color)
3302 .text_size(text_size)
3303 .px_0p5()
3304 .line_height(text_size + px(2.))
3305 .text_color(name.color)
3306 .child(name.string.clone())
3307 .into_any_element()
3308 .draw(
3309 name_origin,
3310 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3311 cx,
3312 )
3313 })
3314 }
3315
3316 cx.paint_quad(cursor);
3317
3318 if let Some(block_text) = &self.block_text {
3319 block_text
3320 .paint(self.origin + origin, self.line_height, cx)
3321 .log_err();
3322 }
3323 }
3324
3325 pub fn shape(&self) -> CursorShape {
3326 self.shape
3327 }
3328}
3329
3330#[derive(Debug)]
3331pub struct HighlightedRange {
3332 pub start_y: Pixels,
3333 pub line_height: Pixels,
3334 pub lines: Vec<HighlightedRangeLine>,
3335 pub color: Hsla,
3336 pub corner_radius: Pixels,
3337}
3338
3339#[derive(Debug)]
3340pub struct HighlightedRangeLine {
3341 pub start_x: Pixels,
3342 pub end_x: Pixels,
3343}
3344
3345impl HighlightedRange {
3346 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3347 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3348 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3349 self.paint_lines(
3350 self.start_y + self.line_height,
3351 &self.lines[1..],
3352 bounds,
3353 cx,
3354 );
3355 } else {
3356 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3357 }
3358 }
3359
3360 fn paint_lines(
3361 &self,
3362 start_y: Pixels,
3363 lines: &[HighlightedRangeLine],
3364 _bounds: Bounds<Pixels>,
3365 cx: &mut ElementContext,
3366 ) {
3367 if lines.is_empty() {
3368 return;
3369 }
3370
3371 let first_line = lines.first().unwrap();
3372 let last_line = lines.last().unwrap();
3373
3374 let first_top_left = point(first_line.start_x, start_y);
3375 let first_top_right = point(first_line.end_x, start_y);
3376
3377 let curve_height = point(Pixels::ZERO, self.corner_radius);
3378 let curve_width = |start_x: Pixels, end_x: Pixels| {
3379 let max = (end_x - start_x) / 2.;
3380 let width = if max < self.corner_radius {
3381 max
3382 } else {
3383 self.corner_radius
3384 };
3385
3386 point(width, Pixels::ZERO)
3387 };
3388
3389 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3390 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3391 path.curve_to(first_top_right + curve_height, first_top_right);
3392
3393 let mut iter = lines.iter().enumerate().peekable();
3394 while let Some((ix, line)) = iter.next() {
3395 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3396
3397 if let Some((_, next_line)) = iter.peek() {
3398 let next_top_right = point(next_line.end_x, bottom_right.y);
3399
3400 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3401 Ordering::Equal => {
3402 path.line_to(bottom_right);
3403 }
3404 Ordering::Less => {
3405 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3406 path.line_to(bottom_right - curve_height);
3407 if self.corner_radius > Pixels::ZERO {
3408 path.curve_to(bottom_right - curve_width, bottom_right);
3409 }
3410 path.line_to(next_top_right + curve_width);
3411 if self.corner_radius > Pixels::ZERO {
3412 path.curve_to(next_top_right + curve_height, next_top_right);
3413 }
3414 }
3415 Ordering::Greater => {
3416 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3417 path.line_to(bottom_right - curve_height);
3418 if self.corner_radius > Pixels::ZERO {
3419 path.curve_to(bottom_right + curve_width, bottom_right);
3420 }
3421 path.line_to(next_top_right - curve_width);
3422 if self.corner_radius > Pixels::ZERO {
3423 path.curve_to(next_top_right + curve_height, next_top_right);
3424 }
3425 }
3426 }
3427 } else {
3428 let curve_width = curve_width(line.start_x, line.end_x);
3429 path.line_to(bottom_right - curve_height);
3430 if self.corner_radius > Pixels::ZERO {
3431 path.curve_to(bottom_right - curve_width, bottom_right);
3432 }
3433
3434 let bottom_left = point(line.start_x, bottom_right.y);
3435 path.line_to(bottom_left + curve_width);
3436 if self.corner_radius > Pixels::ZERO {
3437 path.curve_to(bottom_left - curve_height, bottom_left);
3438 }
3439 }
3440 }
3441
3442 if first_line.start_x > last_line.start_x {
3443 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3444 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3445 path.line_to(second_top_left + curve_height);
3446 if self.corner_radius > Pixels::ZERO {
3447 path.curve_to(second_top_left + curve_width, second_top_left);
3448 }
3449 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3450 path.line_to(first_bottom_left - curve_width);
3451 if self.corner_radius > Pixels::ZERO {
3452 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3453 }
3454 }
3455
3456 path.line_to(first_top_left + curve_height);
3457 if self.corner_radius > Pixels::ZERO {
3458 path.curve_to(first_top_left + top_curve_width, first_top_left);
3459 }
3460 path.line_to(first_top_right - top_curve_width);
3461
3462 cx.paint_path(path, self.color);
3463 }
3464}
3465
3466pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3467 (delta.pow(1.5) / 100.0).into()
3468}
3469
3470fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3471 (delta.pow(1.2) / 300.0).into()
3472}
3473
3474#[cfg(test)]
3475mod tests {
3476 use super::*;
3477 use crate::{
3478 display_map::{BlockDisposition, BlockProperties},
3479 editor_tests::{init_test, update_test_language_settings},
3480 Editor, MultiBuffer,
3481 };
3482 use gpui::TestAppContext;
3483 use language::language_settings;
3484 use log::info;
3485 use std::{num::NonZeroU32, sync::Arc};
3486 use util::test::sample_text;
3487
3488 #[gpui::test]
3489 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3490 init_test(cx, |_| {});
3491 let window = cx.add_window(|cx| {
3492 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3493 Editor::new(EditorMode::Full, buffer, None, cx)
3494 });
3495
3496 let editor = window.root(cx).unwrap();
3497 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3498 let element = EditorElement::new(&editor, style);
3499
3500 let layouts = window
3501 .update(cx, |editor, cx| {
3502 let snapshot = editor.snapshot(cx);
3503 element
3504 .shape_line_numbers(
3505 0..6,
3506 &Default::default(),
3507 DisplayPoint::new(0, 0),
3508 false,
3509 &snapshot,
3510 cx,
3511 )
3512 .0
3513 })
3514 .unwrap();
3515 assert_eq!(layouts.len(), 6);
3516
3517 let relative_rows = window
3518 .update(cx, |editor, cx| {
3519 let snapshot = editor.snapshot(cx);
3520 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3521 })
3522 .unwrap();
3523 assert_eq!(relative_rows[&0], 3);
3524 assert_eq!(relative_rows[&1], 2);
3525 assert_eq!(relative_rows[&2], 1);
3526 // current line has no relative number
3527 assert_eq!(relative_rows[&4], 1);
3528 assert_eq!(relative_rows[&5], 2);
3529
3530 // works if cursor is before screen
3531 let relative_rows = window
3532 .update(cx, |editor, cx| {
3533 let snapshot = editor.snapshot(cx);
3534
3535 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3536 })
3537 .unwrap();
3538 assert_eq!(relative_rows.len(), 3);
3539 assert_eq!(relative_rows[&3], 2);
3540 assert_eq!(relative_rows[&4], 3);
3541 assert_eq!(relative_rows[&5], 4);
3542
3543 // works if cursor is after screen
3544 let relative_rows = window
3545 .update(cx, |editor, cx| {
3546 let snapshot = editor.snapshot(cx);
3547
3548 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3549 })
3550 .unwrap();
3551 assert_eq!(relative_rows.len(), 3);
3552 assert_eq!(relative_rows[&0], 5);
3553 assert_eq!(relative_rows[&1], 4);
3554 assert_eq!(relative_rows[&2], 3);
3555 }
3556
3557 #[gpui::test]
3558 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3559 init_test(cx, |_| {});
3560
3561 let window = cx.add_window(|cx| {
3562 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3563 Editor::new(EditorMode::Full, buffer, None, cx)
3564 });
3565 let editor = window.root(cx).unwrap();
3566 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3567 let mut element = EditorElement::new(&editor, style);
3568
3569 window
3570 .update(cx, |editor, cx| {
3571 editor.cursor_shape = CursorShape::Block;
3572 editor.change_selections(None, cx, |s| {
3573 s.select_ranges([
3574 Point::new(0, 0)..Point::new(1, 0),
3575 Point::new(3, 2)..Point::new(3, 3),
3576 Point::new(5, 6)..Point::new(6, 0),
3577 ]);
3578 });
3579 })
3580 .unwrap();
3581 let state = cx
3582 .update_window(window.into(), |view, cx| {
3583 cx.with_element_context(|cx| {
3584 cx.with_view_id(view.entity_id(), |cx| {
3585 element.compute_layout(
3586 Bounds {
3587 origin: point(px(500.), px(500.)),
3588 size: size(px(500.), px(500.)),
3589 },
3590 cx,
3591 )
3592 })
3593 })
3594 })
3595 .unwrap();
3596
3597 assert_eq!(state.selections.len(), 1);
3598 let local_selections = &state.selections[0].1;
3599 assert_eq!(local_selections.len(), 3);
3600 // moves cursor back one line
3601 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3602 assert_eq!(
3603 local_selections[0].range,
3604 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3605 );
3606
3607 // moves cursor back one column
3608 assert_eq!(
3609 local_selections[1].range,
3610 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3611 );
3612 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3613
3614 // leaves cursor on the max point
3615 assert_eq!(
3616 local_selections[2].range,
3617 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3618 );
3619 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3620
3621 // active lines does not include 1 (even though the range of the selection does)
3622 assert_eq!(
3623 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3624 vec![0, 3, 5, 6]
3625 );
3626
3627 // multi-buffer support
3628 // in DisplayPoint coordinates, this is what we're dealing with:
3629 // 0: [[file
3630 // 1: header]]
3631 // 2: aaaaaa
3632 // 3: bbbbbb
3633 // 4: cccccc
3634 // 5:
3635 // 6: ...
3636 // 7: ffffff
3637 // 8: gggggg
3638 // 9: hhhhhh
3639 // 10:
3640 // 11: [[file
3641 // 12: header]]
3642 // 13: bbbbbb
3643 // 14: cccccc
3644 // 15: dddddd
3645 let window = cx.add_window(|cx| {
3646 let buffer = MultiBuffer::build_multi(
3647 [
3648 (
3649 &(sample_text(8, 6, 'a') + "\n"),
3650 vec![
3651 Point::new(0, 0)..Point::new(3, 0),
3652 Point::new(4, 0)..Point::new(7, 0),
3653 ],
3654 ),
3655 (
3656 &(sample_text(8, 6, 'a') + "\n"),
3657 vec![Point::new(1, 0)..Point::new(3, 0)],
3658 ),
3659 ],
3660 cx,
3661 );
3662 Editor::new(EditorMode::Full, buffer, None, cx)
3663 });
3664 let editor = window.root(cx).unwrap();
3665 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3666 let mut element = EditorElement::new(&editor, style);
3667 let _state = window.update(cx, |editor, cx| {
3668 editor.cursor_shape = CursorShape::Block;
3669 editor.change_selections(None, cx, |s| {
3670 s.select_display_ranges([
3671 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3672 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3673 ]);
3674 });
3675 });
3676
3677 let state = cx
3678 .update_window(window.into(), |view, cx| {
3679 cx.with_element_context(|cx| {
3680 cx.with_view_id(view.entity_id(), |cx| {
3681 element.compute_layout(
3682 Bounds {
3683 origin: point(px(500.), px(500.)),
3684 size: size(px(500.), px(500.)),
3685 },
3686 cx,
3687 )
3688 })
3689 })
3690 })
3691 .unwrap();
3692 assert_eq!(state.selections.len(), 1);
3693 let local_selections = &state.selections[0].1;
3694 assert_eq!(local_selections.len(), 2);
3695
3696 // moves cursor on excerpt boundary back a line
3697 // and doesn't allow selection to bleed through
3698 assert_eq!(
3699 local_selections[0].range,
3700 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3701 );
3702 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3703 // moves cursor on buffer boundary back two lines
3704 // and doesn't allow selection to bleed through
3705 assert_eq!(
3706 local_selections[1].range,
3707 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3708 );
3709 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3710 }
3711
3712 #[gpui::test]
3713 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3714 init_test(cx, |_| {});
3715
3716 let window = cx.add_window(|cx| {
3717 let buffer = MultiBuffer::build_simple("", cx);
3718 Editor::new(EditorMode::Full, buffer, None, cx)
3719 });
3720 let editor = window.root(cx).unwrap();
3721 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3722 window
3723 .update(cx, |editor, cx| {
3724 editor.set_placeholder_text("hello", cx);
3725 editor.insert_blocks(
3726 [BlockProperties {
3727 style: BlockStyle::Fixed,
3728 disposition: BlockDisposition::Above,
3729 height: 3,
3730 position: Anchor::min(),
3731 render: Arc::new(|_| div().into_any()),
3732 }],
3733 None,
3734 cx,
3735 );
3736
3737 // Blur the editor so that it displays placeholder text.
3738 cx.blur();
3739 })
3740 .unwrap();
3741
3742 let mut element = EditorElement::new(&editor, style);
3743 let state = cx
3744 .update_window(window.into(), |view, cx| {
3745 cx.with_element_context(|cx| {
3746 cx.with_view_id(view.entity_id(), |cx| {
3747 element.compute_layout(
3748 Bounds {
3749 origin: point(px(500.), px(500.)),
3750 size: size(px(500.), px(500.)),
3751 },
3752 cx,
3753 )
3754 })
3755 })
3756 })
3757 .unwrap();
3758 let size = state.position_map.size;
3759
3760 assert_eq!(state.position_map.line_layouts.len(), 4);
3761 assert_eq!(
3762 state
3763 .line_numbers
3764 .iter()
3765 .map(Option::is_some)
3766 .collect::<Vec<_>>(),
3767 &[false, false, false, true]
3768 );
3769
3770 // Don't panic.
3771 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3772 cx.update_window(window.into(), |_, cx| {
3773 cx.with_element_context(|cx| element.paint(bounds, &mut (), cx))
3774 })
3775 .unwrap()
3776 }
3777
3778 #[gpui::test]
3779 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3780 const TAB_SIZE: u32 = 4;
3781
3782 let input_text = "\t \t|\t| a b";
3783 let expected_invisibles = vec![
3784 Invisible::Tab {
3785 line_start_offset: 0,
3786 },
3787 Invisible::Whitespace {
3788 line_offset: TAB_SIZE as usize,
3789 },
3790 Invisible::Tab {
3791 line_start_offset: TAB_SIZE as usize + 1,
3792 },
3793 Invisible::Tab {
3794 line_start_offset: TAB_SIZE as usize * 2 + 1,
3795 },
3796 Invisible::Whitespace {
3797 line_offset: TAB_SIZE as usize * 3 + 1,
3798 },
3799 Invisible::Whitespace {
3800 line_offset: TAB_SIZE as usize * 3 + 3,
3801 },
3802 ];
3803 assert_eq!(
3804 expected_invisibles.len(),
3805 input_text
3806 .chars()
3807 .filter(|initial_char| initial_char.is_whitespace())
3808 .count(),
3809 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3810 );
3811
3812 init_test(cx, |s| {
3813 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3814 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3815 });
3816
3817 let actual_invisibles =
3818 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3819
3820 assert_eq!(expected_invisibles, actual_invisibles);
3821 }
3822
3823 #[gpui::test]
3824 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3825 init_test(cx, |s| {
3826 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3827 s.defaults.tab_size = NonZeroU32::new(4);
3828 });
3829
3830 for editor_mode_without_invisibles in [
3831 EditorMode::SingleLine,
3832 EditorMode::AutoHeight { max_lines: 100 },
3833 ] {
3834 let invisibles = collect_invisibles_from_new_editor(
3835 cx,
3836 editor_mode_without_invisibles,
3837 "\t\t\t| | a b",
3838 px(500.0),
3839 );
3840 assert!(invisibles.is_empty(),
3841 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3842 }
3843 }
3844
3845 #[gpui::test]
3846 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3847 let tab_size = 4;
3848 let input_text = "a\tbcd ".repeat(9);
3849 let repeated_invisibles = [
3850 Invisible::Tab {
3851 line_start_offset: 1,
3852 },
3853 Invisible::Whitespace {
3854 line_offset: tab_size as usize + 3,
3855 },
3856 Invisible::Whitespace {
3857 line_offset: tab_size as usize + 4,
3858 },
3859 Invisible::Whitespace {
3860 line_offset: tab_size as usize + 5,
3861 },
3862 ];
3863 let expected_invisibles = std::iter::once(repeated_invisibles)
3864 .cycle()
3865 .take(9)
3866 .flatten()
3867 .collect::<Vec<_>>();
3868 assert_eq!(
3869 expected_invisibles.len(),
3870 input_text
3871 .chars()
3872 .filter(|initial_char| initial_char.is_whitespace())
3873 .count(),
3874 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3875 );
3876 info!("Expected invisibles: {expected_invisibles:?}");
3877
3878 init_test(cx, |_| {});
3879
3880 // Put the same string with repeating whitespace pattern into editors of various size,
3881 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3882 let resize_step = 10.0;
3883 let mut editor_width = 200.0;
3884 while editor_width <= 1000.0 {
3885 update_test_language_settings(cx, |s| {
3886 s.defaults.tab_size = NonZeroU32::new(tab_size);
3887 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3888 s.defaults.preferred_line_length = Some(editor_width as u32);
3889 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3890 });
3891
3892 let actual_invisibles = collect_invisibles_from_new_editor(
3893 cx,
3894 EditorMode::Full,
3895 &input_text,
3896 px(editor_width),
3897 );
3898
3899 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3900 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3901 let mut i = 0;
3902 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3903 i = actual_index;
3904 match expected_invisibles.get(i) {
3905 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3906 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3907 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3908 _ => {
3909 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3910 }
3911 },
3912 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3913 }
3914 }
3915 let missing_expected_invisibles = &expected_invisibles[i + 1..];
3916 assert!(
3917 missing_expected_invisibles.is_empty(),
3918 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3919 );
3920
3921 editor_width += resize_step;
3922 }
3923 }
3924
3925 fn collect_invisibles_from_new_editor(
3926 cx: &mut TestAppContext,
3927 editor_mode: EditorMode,
3928 input_text: &str,
3929 editor_width: Pixels,
3930 ) -> Vec<Invisible> {
3931 info!(
3932 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
3933 editor_width.0
3934 );
3935 let window = cx.add_window(|cx| {
3936 let buffer = MultiBuffer::build_simple(&input_text, cx);
3937 Editor::new(editor_mode, buffer, None, cx)
3938 });
3939 let editor = window.root(cx).unwrap();
3940 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3941 let mut element = EditorElement::new(&editor, style);
3942 window
3943 .update(cx, |editor, cx| {
3944 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3945 editor.set_wrap_width(Some(editor_width), cx);
3946 })
3947 .unwrap();
3948 let layout_state = cx
3949 .update_window(window.into(), |_, cx| {
3950 cx.with_element_context(|cx| {
3951 element.compute_layout(
3952 Bounds {
3953 origin: point(px(500.), px(500.)),
3954 size: size(px(500.), px(500.)),
3955 },
3956 cx,
3957 )
3958 })
3959 })
3960 .unwrap();
3961
3962 layout_state
3963 .position_map
3964 .line_layouts
3965 .iter()
3966 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3967 .flatten()
3968 .cloned()
3969 .collect()
3970 }
3971}
3972
3973pub fn register_action<T: Action>(
3974 view: &View<Editor>,
3975 cx: &mut WindowContext,
3976 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
3977) {
3978 let view = view.clone();
3979 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
3980 let action = action.downcast_ref().unwrap();
3981 if phase == DispatchPhase::Bubble {
3982 view.update(cx, |editor, cx| {
3983 listener(editor, action, cx);
3984 })
3985 }
3986 })
3987}
3988
3989fn compute_auto_height_layout(
3990 editor: &mut Editor,
3991 max_lines: usize,
3992 max_line_number_width: Pixels,
3993 known_dimensions: Size<Option<Pixels>>,
3994 cx: &mut ViewContext<Editor>,
3995) -> Option<Size<Pixels>> {
3996 let width = known_dimensions.width?;
3997 if let Some(height) = known_dimensions.height {
3998 return Some(size(width, height));
3999 }
4000
4001 let style = editor.style.as_ref().unwrap();
4002 let font_id = cx.text_system().resolve_font(&style.text.font());
4003 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4004 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4005 let em_width = cx
4006 .text_system()
4007 .typographic_bounds(font_id, font_size, 'm')
4008 .unwrap()
4009 .size
4010 .width;
4011
4012 let mut snapshot = editor.snapshot(cx);
4013 let gutter_dimensions =
4014 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4015
4016 editor.gutter_width = gutter_dimensions.width;
4017 let text_width = width - gutter_dimensions.width;
4018 let overscroll = size(em_width, px(0.));
4019
4020 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4021 if editor.set_wrap_width(Some(editor_width), cx) {
4022 snapshot = editor.snapshot(cx);
4023 }
4024
4025 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4026 let height = scroll_height
4027 .max(line_height)
4028 .min(line_height * max_lines as f32);
4029
4030 Some(size(width, height))
4031}