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, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
20 HalfPageDown, HalfPageUp, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, SelectPhase,
21 Selection, SoftWrap, ToPoint, MAX_LINE_LEN,
22};
23use anyhow::Result;
24use collections::{BTreeMap, HashMap};
25use git::diff::DiffHunkStatus;
26use gpui::{
27 div, fill, outline, overlay, point, px, quad, relative, size, transparent_black, Action,
28 AnchorCorner, AnyElement, AvailableSpace, BorrowWindow, Bounds, ContentMask, Corners,
29 CursorStyle, DispatchPhase, Edges, Element, ElementInputHandler, Entity, Hsla,
30 InteractiveBounds, InteractiveElement, IntoElement, ModifiersChangedEvent, MouseButton,
31 MouseDownEvent, MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, ScrollDelta,
32 ScrollWheelEvent, ShapedLine, SharedString, Size, StackingOrder, StatefulInteractiveElement,
33 Style, Styled, TextRun, TextStyle, View, ViewContext, WindowContext,
34};
35use itertools::Itertools;
36use language::language_settings::ShowWhitespaceSetting;
37use multi_buffer::Anchor;
38use project::{
39 project_settings::{GitGutterSetting, ProjectSettings},
40 ProjectPath,
41};
42use settings::Settings;
43use smallvec::SmallVec;
44use std::{
45 any::TypeId,
46 borrow::Cow,
47 cmp::{self, Ordering},
48 fmt::Write,
49 iter,
50 ops::Range,
51 sync::Arc,
52};
53use sum_tree::Bias;
54use theme::{ActiveTheme, PlayerColor};
55use ui::prelude::*;
56use ui::{h_flex, ButtonLike, ButtonStyle, IconButton, Tooltip};
57use util::ResultExt;
58use workspace::item::Item;
59
60struct SelectionLayout {
61 head: DisplayPoint,
62 cursor_shape: CursorShape,
63 is_newest: bool,
64 is_local: bool,
65 range: Range<DisplayPoint>,
66 active_rows: Range<u32>,
67 user_name: Option<SharedString>,
68}
69
70impl SelectionLayout {
71 fn new<T: ToPoint + ToDisplayPoint + Clone>(
72 selection: Selection<T>,
73 line_mode: bool,
74 cursor_shape: CursorShape,
75 map: &DisplaySnapshot,
76 is_newest: bool,
77 is_local: bool,
78 user_name: Option<SharedString>,
79 ) -> Self {
80 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
81 let display_selection = point_selection.map(|p| p.to_display_point(map));
82 let mut range = display_selection.range();
83 let mut head = display_selection.head();
84 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
85 ..map.next_line_boundary(point_selection.end).1.row();
86
87 // vim visual line mode
88 if line_mode {
89 let point_range = map.expand_to_line(point_selection.range());
90 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
91 }
92
93 // any vim visual mode (including line mode)
94 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
95 if head.column() > 0 {
96 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
97 } else if head.row() > 0 && head != map.max_point() {
98 head = map.clip_point(
99 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
100 Bias::Left,
101 );
102 // updating range.end is a no-op unless you're cursor is
103 // on the newline containing a multi-buffer divider
104 // in which case the clip_point may have moved the head up
105 // an additional row.
106 range.end = DisplayPoint::new(head.row() + 1, 0);
107 active_rows.end = head.row();
108 }
109 }
110
111 Self {
112 head,
113 cursor_shape,
114 is_newest,
115 is_local,
116 range,
117 active_rows,
118 user_name,
119 }
120 }
121}
122
123pub struct EditorElement {
124 editor: View<Editor>,
125 style: EditorStyle,
126}
127
128impl EditorElement {
129 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
130 Self {
131 editor: editor.clone(),
132 style,
133 }
134 }
135
136 fn register_actions(&self, cx: &mut WindowContext) {
137 let view = &self.editor;
138 view.update(cx, |editor, cx| {
139 for action in editor.editor_actions.iter() {
140 (action)(cx)
141 }
142 });
143
144 crate::rust_analyzer_ext::apply_related_actions(view, cx);
145 register_action(view, cx, Editor::move_left);
146 register_action(view, cx, Editor::move_right);
147 register_action(view, cx, Editor::move_down);
148 register_action(view, cx, Editor::move_up);
149 register_action(view, cx, Editor::cancel);
150 register_action(view, cx, Editor::newline);
151 register_action(view, cx, Editor::newline_above);
152 register_action(view, cx, Editor::newline_below);
153 register_action(view, cx, Editor::backspace);
154 register_action(view, cx, Editor::delete);
155 register_action(view, cx, Editor::tab);
156 register_action(view, cx, Editor::tab_prev);
157 register_action(view, cx, Editor::indent);
158 register_action(view, cx, Editor::outdent);
159 register_action(view, cx, Editor::delete_line);
160 register_action(view, cx, Editor::join_lines);
161 register_action(view, cx, Editor::sort_lines_case_sensitive);
162 register_action(view, cx, Editor::sort_lines_case_insensitive);
163 register_action(view, cx, Editor::reverse_lines);
164 register_action(view, cx, Editor::shuffle_lines);
165 register_action(view, cx, Editor::convert_to_upper_case);
166 register_action(view, cx, Editor::convert_to_lower_case);
167 register_action(view, cx, Editor::convert_to_title_case);
168 register_action(view, cx, Editor::convert_to_snake_case);
169 register_action(view, cx, Editor::convert_to_kebab_case);
170 register_action(view, cx, Editor::convert_to_upper_camel_case);
171 register_action(view, cx, Editor::convert_to_lower_camel_case);
172 register_action(view, cx, Editor::delete_to_previous_word_start);
173 register_action(view, cx, Editor::delete_to_previous_subword_start);
174 register_action(view, cx, Editor::delete_to_next_word_end);
175 register_action(view, cx, Editor::delete_to_next_subword_end);
176 register_action(view, cx, Editor::delete_to_beginning_of_line);
177 register_action(view, cx, Editor::delete_to_end_of_line);
178 register_action(view, cx, Editor::cut_to_end_of_line);
179 register_action(view, cx, Editor::duplicate_line);
180 register_action(view, cx, Editor::move_line_up);
181 register_action(view, cx, Editor::move_line_down);
182 register_action(view, cx, Editor::transpose);
183 register_action(view, cx, Editor::cut);
184 register_action(view, cx, Editor::copy);
185 register_action(view, cx, Editor::paste);
186 register_action(view, cx, Editor::undo);
187 register_action(view, cx, Editor::redo);
188 register_action(view, cx, Editor::move_page_up);
189 register_action(view, cx, Editor::move_page_down);
190 register_action(view, cx, Editor::next_screen);
191 register_action(view, cx, Editor::scroll_cursor_top);
192 register_action(view, cx, Editor::scroll_cursor_center);
193 register_action(view, cx, Editor::scroll_cursor_bottom);
194 register_action(view, cx, |editor, _: &LineDown, cx| {
195 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
196 });
197 register_action(view, cx, |editor, _: &LineUp, cx| {
198 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
199 });
200 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
201 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
202 });
203 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
204 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
205 });
206 register_action(view, cx, |editor, _: &PageDown, cx| {
207 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
208 });
209 register_action(view, cx, |editor, _: &PageUp, cx| {
210 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
211 });
212 register_action(view, cx, Editor::move_to_previous_word_start);
213 register_action(view, cx, Editor::move_to_previous_subword_start);
214 register_action(view, cx, Editor::move_to_next_word_end);
215 register_action(view, cx, Editor::move_to_next_subword_end);
216 register_action(view, cx, Editor::move_to_beginning_of_line);
217 register_action(view, cx, Editor::move_to_end_of_line);
218 register_action(view, cx, Editor::move_to_start_of_paragraph);
219 register_action(view, cx, Editor::move_to_end_of_paragraph);
220 register_action(view, cx, Editor::move_to_beginning);
221 register_action(view, cx, Editor::move_to_end);
222 register_action(view, cx, Editor::select_up);
223 register_action(view, cx, Editor::select_down);
224 register_action(view, cx, Editor::select_left);
225 register_action(view, cx, Editor::select_right);
226 register_action(view, cx, Editor::select_to_previous_word_start);
227 register_action(view, cx, Editor::select_to_previous_subword_start);
228 register_action(view, cx, Editor::select_to_next_word_end);
229 register_action(view, cx, Editor::select_to_next_subword_end);
230 register_action(view, cx, Editor::select_to_beginning_of_line);
231 register_action(view, cx, Editor::select_to_end_of_line);
232 register_action(view, cx, Editor::select_to_start_of_paragraph);
233 register_action(view, cx, Editor::select_to_end_of_paragraph);
234 register_action(view, cx, Editor::select_to_beginning);
235 register_action(view, cx, Editor::select_to_end);
236 register_action(view, cx, Editor::select_all);
237 register_action(view, cx, |editor, action, cx| {
238 editor.select_all_matches(action, cx).log_err();
239 });
240 register_action(view, cx, Editor::select_line);
241 register_action(view, cx, Editor::split_selection_into_lines);
242 register_action(view, cx, Editor::add_selection_above);
243 register_action(view, cx, Editor::add_selection_below);
244 register_action(view, cx, |editor, action, cx| {
245 editor.select_next(action, cx).log_err();
246 });
247 register_action(view, cx, |editor, action, cx| {
248 editor.select_previous(action, cx).log_err();
249 });
250 register_action(view, cx, Editor::toggle_comments);
251 register_action(view, cx, Editor::select_larger_syntax_node);
252 register_action(view, cx, Editor::select_smaller_syntax_node);
253 register_action(view, cx, Editor::move_to_enclosing_bracket);
254 register_action(view, cx, Editor::undo_selection);
255 register_action(view, cx, Editor::redo_selection);
256 register_action(view, cx, Editor::go_to_diagnostic);
257 register_action(view, cx, Editor::go_to_prev_diagnostic);
258 register_action(view, cx, Editor::go_to_hunk);
259 register_action(view, cx, Editor::go_to_prev_hunk);
260 register_action(view, cx, Editor::go_to_definition);
261 register_action(view, cx, Editor::go_to_definition_split);
262 register_action(view, cx, Editor::go_to_type_definition);
263 register_action(view, cx, Editor::go_to_type_definition_split);
264 register_action(view, cx, Editor::fold);
265 register_action(view, cx, Editor::fold_at);
266 register_action(view, cx, Editor::unfold_lines);
267 register_action(view, cx, Editor::unfold_at);
268 register_action(view, cx, Editor::fold_selected_ranges);
269 register_action(view, cx, Editor::show_completions);
270 register_action(view, cx, Editor::toggle_code_actions);
271 register_action(view, cx, Editor::open_excerpts);
272 register_action(view, cx, Editor::toggle_soft_wrap);
273 register_action(view, cx, Editor::toggle_inlay_hints);
274 register_action(view, cx, hover_popover::hover);
275 register_action(view, cx, Editor::reveal_in_finder);
276 register_action(view, cx, Editor::copy_path);
277 register_action(view, cx, Editor::copy_relative_path);
278 register_action(view, cx, Editor::copy_highlight_json);
279 register_action(view, cx, |editor, action, cx| {
280 if let Some(task) = editor.format(action, cx) {
281 task.detach_and_log_err(cx);
282 } else {
283 cx.propagate();
284 }
285 });
286 register_action(view, cx, Editor::restart_language_server);
287 register_action(view, cx, Editor::show_character_palette);
288 register_action(view, cx, |editor, action, cx| {
289 if let Some(task) = editor.confirm_completion(action, cx) {
290 task.detach_and_log_err(cx);
291 } else {
292 cx.propagate();
293 }
294 });
295 register_action(view, cx, |editor, action, cx| {
296 if let Some(task) = editor.confirm_code_action(action, cx) {
297 task.detach_and_log_err(cx);
298 } else {
299 cx.propagate();
300 }
301 });
302 register_action(view, cx, |editor, action, cx| {
303 if let Some(task) = editor.rename(action, cx) {
304 task.detach_and_log_err(cx);
305 } else {
306 cx.propagate();
307 }
308 });
309 register_action(view, cx, |editor, action, cx| {
310 if let Some(task) = editor.confirm_rename(action, cx) {
311 task.detach_and_log_err(cx);
312 } else {
313 cx.propagate();
314 }
315 });
316 register_action(view, cx, |editor, action, cx| {
317 if let Some(task) = editor.find_all_references(action, cx) {
318 task.detach_and_log_err(cx);
319 } else {
320 cx.propagate();
321 }
322 });
323 register_action(view, cx, Editor::next_copilot_suggestion);
324 register_action(view, cx, Editor::previous_copilot_suggestion);
325 register_action(view, cx, Editor::copilot_suggest);
326 register_action(view, cx, Editor::context_menu_first);
327 register_action(view, cx, Editor::context_menu_prev);
328 register_action(view, cx, Editor::context_menu_next);
329 register_action(view, cx, Editor::context_menu_last);
330 }
331
332 fn register_key_listeners(&self, cx: &mut WindowContext) {
333 cx.on_key_event({
334 let editor = self.editor.clone();
335 move |event: &ModifiersChangedEvent, phase, cx| {
336 if phase != DispatchPhase::Bubble {
337 return;
338 }
339
340 if editor.update(cx, |editor, cx| Self::modifiers_changed(editor, event, cx)) {
341 cx.stop_propagation();
342 }
343 }
344 });
345 }
346
347 pub(crate) fn modifiers_changed(
348 editor: &mut Editor,
349 event: &ModifiersChangedEvent,
350 cx: &mut ViewContext<Editor>,
351 ) -> bool {
352 let pending_selection = editor.has_pending_selection();
353
354 if let Some(point) = &editor.link_go_to_definition_state.last_trigger_point {
355 if event.command && !pending_selection {
356 let point = point.clone();
357 let snapshot = editor.snapshot(cx);
358 let kind = point.definition_kind(event.shift);
359
360 show_link_definition(kind, editor, point, snapshot, cx);
361 return false;
362 }
363 }
364
365 {
366 if editor.link_go_to_definition_state.symbol_range.is_some()
367 || !editor.link_go_to_definition_state.definitions.is_empty()
368 {
369 editor.link_go_to_definition_state.symbol_range.take();
370 editor.link_go_to_definition_state.definitions.clear();
371 cx.notify();
372 }
373
374 editor.link_go_to_definition_state.task = None;
375
376 editor.clear_highlights::<LinkGoToDefinitionState>(cx);
377 }
378
379 false
380 }
381
382 fn mouse_left_down(
383 editor: &mut Editor,
384 event: &MouseDownEvent,
385 position_map: &PositionMap,
386 text_bounds: Bounds<Pixels>,
387 gutter_bounds: Bounds<Pixels>,
388 stacking_order: &StackingOrder,
389 cx: &mut ViewContext<Editor>,
390 ) {
391 let mut click_count = event.click_count;
392 let modifiers = event.modifiers;
393
394 if cx.default_prevented() {
395 return;
396 } else if gutter_bounds.contains(&event.position) {
397 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
398 } else if !text_bounds.contains(&event.position) {
399 return;
400 }
401 if !cx.was_top_layer(&event.position, stacking_order) {
402 return;
403 }
404
405 let point_for_position = position_map.point_for_position(text_bounds, event.position);
406 let position = point_for_position.previous_valid;
407 if modifiers.shift && modifiers.alt {
408 editor.select(
409 SelectPhase::BeginColumnar {
410 position,
411 goal_column: point_for_position.exact_unclipped.column(),
412 },
413 cx,
414 );
415 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
416 editor.select(
417 SelectPhase::Extend {
418 position,
419 click_count,
420 },
421 cx,
422 );
423 } else {
424 editor.select(
425 SelectPhase::Begin {
426 position,
427 add: modifiers.alt,
428 click_count,
429 },
430 cx,
431 );
432 }
433
434 cx.stop_propagation();
435 }
436
437 fn mouse_right_down(
438 editor: &mut Editor,
439 event: &MouseDownEvent,
440 position_map: &PositionMap,
441 text_bounds: Bounds<Pixels>,
442 cx: &mut ViewContext<Editor>,
443 ) {
444 if !text_bounds.contains(&event.position) {
445 return;
446 }
447 let point_for_position = position_map.point_for_position(text_bounds, event.position);
448 mouse_context_menu::deploy_context_menu(
449 editor,
450 event.position,
451 point_for_position.previous_valid,
452 cx,
453 );
454 cx.stop_propagation();
455 }
456
457 fn mouse_up(
458 editor: &mut Editor,
459 event: &MouseUpEvent,
460 position_map: &PositionMap,
461 text_bounds: Bounds<Pixels>,
462 interactive_bounds: &InteractiveBounds,
463 stacking_order: &StackingOrder,
464 cx: &mut ViewContext<Editor>,
465 ) {
466 let end_selection = editor.has_pending_selection();
467 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
468
469 if end_selection {
470 editor.select(SelectPhase::End, cx);
471 }
472
473 if interactive_bounds.visibly_contains(&event.position, cx)
474 && !pending_nonempty_selections
475 && event.modifiers.command
476 && text_bounds.contains(&event.position)
477 && cx.was_top_layer(&event.position, stacking_order)
478 {
479 let point = position_map.point_for_position(text_bounds, event.position);
480 let could_be_inlay = point.as_valid().is_none();
481 let split = event.modifiers.alt;
482 if event.modifiers.shift || could_be_inlay {
483 go_to_fetched_type_definition(editor, point, split, cx);
484 } else {
485 go_to_fetched_definition(editor, point, split, cx);
486 }
487
488 cx.stop_propagation();
489 } else if end_selection {
490 cx.stop_propagation();
491 }
492 }
493
494 fn mouse_dragged(
495 editor: &mut Editor,
496 event: &MouseMoveEvent,
497 position_map: &PositionMap,
498 text_bounds: Bounds<Pixels>,
499 _gutter_bounds: Bounds<Pixels>,
500 _stacking_order: &StackingOrder,
501 cx: &mut ViewContext<Editor>,
502 ) {
503 if !editor.has_pending_selection() {
504 return;
505 }
506
507 let point_for_position = position_map.point_for_position(text_bounds, event.position);
508 let mut scroll_delta = gpui::Point::<f32>::default();
509 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
510 let top = text_bounds.origin.y + vertical_margin;
511 let bottom = text_bounds.lower_left().y - vertical_margin;
512 if event.position.y < top {
513 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
514 }
515 if event.position.y > bottom {
516 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
517 }
518
519 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
520 let left = text_bounds.origin.x + horizontal_margin;
521 let right = text_bounds.upper_right().x - horizontal_margin;
522 if event.position.x < left {
523 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
524 }
525 if event.position.x > right {
526 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
527 }
528
529 editor.select(
530 SelectPhase::Update {
531 position: point_for_position.previous_valid,
532 goal_column: point_for_position.exact_unclipped.column(),
533 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
534 .clamp(&gpui::Point::default(), &position_map.scroll_max),
535 },
536 cx,
537 );
538 }
539
540 fn mouse_moved(
541 editor: &mut Editor,
542 event: &MouseMoveEvent,
543 position_map: &PositionMap,
544 text_bounds: Bounds<Pixels>,
545 gutter_bounds: Bounds<Pixels>,
546 stacking_order: &StackingOrder,
547 cx: &mut ViewContext<Editor>,
548 ) {
549 let modifiers = event.modifiers;
550 let text_hovered = text_bounds.contains(&event.position);
551 let gutter_hovered = gutter_bounds.contains(&event.position);
552 let was_top = cx.was_top_layer(&event.position, stacking_order);
553
554 editor.set_gutter_hovered(gutter_hovered, cx);
555
556 // Don't trigger hover popover if mouse is hovering over context menu
557 if text_hovered && was_top {
558 let point_for_position = position_map.point_for_position(text_bounds, event.position);
559
560 match point_for_position.as_valid() {
561 Some(point) => {
562 update_go_to_definition_link(
563 editor,
564 Some(GoToDefinitionTrigger::Text(point)),
565 modifiers.command,
566 modifiers.shift,
567 cx,
568 );
569 hover_at(editor, Some(point), cx);
570 Self::update_visible_cursor(editor, point, cx);
571 }
572 None => {
573 update_inlay_link_and_hover_points(
574 &position_map.snapshot,
575 point_for_position,
576 editor,
577 modifiers.command,
578 modifiers.shift,
579 cx,
580 );
581 }
582 }
583 } else {
584 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
585 hover_at(editor, None, cx);
586 if gutter_hovered && was_top {
587 cx.stop_propagation();
588 }
589 }
590 }
591
592 fn update_visible_cursor(
593 editor: &mut Editor,
594 point: DisplayPoint,
595 cx: &mut ViewContext<Editor>,
596 ) {
597 let snapshot = editor.snapshot(cx);
598 let Some(hub) = editor.collaboration_hub() else {
599 return;
600 };
601 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
602 ..DisplayPoint::new(
603 point.row(),
604 (point.column() + 1).min(snapshot.line_len(point.row())),
605 );
606
607 let range = snapshot
608 .buffer_snapshot
609 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
610 ..snapshot
611 .buffer_snapshot
612 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
613
614 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
615 editor.hovered_cursor.take();
616 return;
617 };
618 editor.hovered_cursor.replace(crate::HoveredCursor {
619 replica_id: selection.replica_id,
620 selection_id: selection.selection.id,
621 });
622 cx.notify()
623 }
624
625 fn paint_background(
626 &self,
627 gutter_bounds: Bounds<Pixels>,
628 text_bounds: Bounds<Pixels>,
629 layout: &LayoutState,
630 cx: &mut WindowContext,
631 ) {
632 let bounds = gutter_bounds.union(&text_bounds);
633 let scroll_top =
634 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
635 let gutter_bg = cx.theme().colors().editor_gutter_background;
636 cx.paint_quad(fill(gutter_bounds, gutter_bg));
637 cx.paint_quad(fill(text_bounds, self.style.background));
638
639 if let EditorMode::Full = layout.mode {
640 let mut active_rows = layout.active_rows.iter().peekable();
641 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
642 let mut end_row = *start_row;
643 while active_rows.peek().map_or(false, |r| {
644 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
645 }) {
646 active_rows.next().unwrap();
647 end_row += 1;
648 }
649
650 if !contains_non_empty_selection {
651 let origin = point(
652 bounds.origin.x,
653 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
654 - scroll_top,
655 );
656 let size = size(
657 bounds.size.width,
658 layout.position_map.line_height * (end_row - start_row + 1) as f32,
659 );
660 let active_line_bg = cx.theme().colors().editor_active_line_background;
661 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
662 }
663 }
664
665 if let Some(highlighted_rows) = &layout.highlighted_rows {
666 let origin = point(
667 bounds.origin.x,
668 bounds.origin.y
669 + (layout.position_map.line_height * highlighted_rows.start as f32)
670 - scroll_top,
671 );
672 let size = size(
673 bounds.size.width,
674 layout.position_map.line_height * highlighted_rows.len() as f32,
675 );
676 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
677 cx.paint_quad(fill(Bounds { origin, size }, highlighted_line_bg));
678 }
679
680 let scroll_left =
681 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
682
683 for (wrap_position, active) in layout.wrap_guides.iter() {
684 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
685 - scroll_left;
686
687 if x < text_bounds.origin.x
688 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
689 {
690 continue;
691 }
692
693 let color = if *active {
694 cx.theme().colors().editor_active_wrap_guide
695 } else {
696 cx.theme().colors().editor_wrap_guide
697 };
698 cx.paint_quad(fill(
699 Bounds {
700 origin: point(x, text_bounds.origin.y),
701 size: size(px(1.), text_bounds.size.height),
702 },
703 color,
704 ));
705 }
706 }
707 }
708
709 fn paint_gutter(
710 &mut self,
711 bounds: Bounds<Pixels>,
712 layout: &mut LayoutState,
713 cx: &mut WindowContext,
714 ) {
715 let line_height = layout.position_map.line_height;
716
717 let scroll_position = layout.position_map.snapshot.scroll_position();
718 let scroll_top = scroll_position.y * line_height;
719
720 let show_gutter = matches!(
721 ProjectSettings::get_global(cx).git.git_gutter,
722 Some(GitGutterSetting::TrackedFiles)
723 );
724
725 if show_gutter {
726 Self::paint_diff_hunks(bounds, layout, cx);
727 }
728
729 for (ix, line) in layout.line_numbers.iter().enumerate() {
730 if let Some(line) = line {
731 let line_origin = bounds.origin
732 + point(
733 bounds.size.width - line.width - layout.gutter_padding,
734 ix as f32 * line_height - (scroll_top % line_height),
735 );
736
737 line.paint(line_origin, line_height, cx).log_err();
738 }
739 }
740
741 cx.with_z_index(1, |cx| {
742 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
743 if let Some(fold_indicator) = fold_indicator {
744 let mut fold_indicator = fold_indicator.into_any_element();
745 let available_space = size(
746 AvailableSpace::MinContent,
747 AvailableSpace::Definite(line_height * 0.55),
748 );
749 let fold_indicator_size = fold_indicator.measure(available_space, cx);
750
751 let position = point(
752 bounds.size.width - layout.gutter_padding,
753 ix as f32 * line_height - (scroll_top % line_height),
754 );
755 let centering_offset = point(
756 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width)
757 / 2.,
758 (line_height - fold_indicator_size.height) / 2.,
759 );
760 let origin = bounds.origin + position + centering_offset;
761 fold_indicator.draw(origin, available_space, cx);
762 }
763 }
764
765 if let Some(indicator) = layout.code_actions_indicator.take() {
766 let mut button = indicator.button.into_any_element();
767 let available_space = size(
768 AvailableSpace::MinContent,
769 AvailableSpace::Definite(line_height),
770 );
771 let indicator_size = button.measure(available_space, cx);
772
773 let mut x = Pixels::ZERO;
774 let mut y = indicator.row as f32 * line_height - scroll_top;
775 // Center indicator.
776 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
777 y += (line_height - indicator_size.height) / 2.;
778
779 button.draw(bounds.origin + point(x, y), available_space, cx);
780 }
781 });
782 }
783
784 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut WindowContext) {
785 let line_height = layout.position_map.line_height;
786
787 let scroll_position = layout.position_map.snapshot.scroll_position();
788 let scroll_top = scroll_position.y * line_height;
789
790 for hunk in &layout.display_hunks {
791 let (display_row_range, status) = match hunk {
792 //TODO: This rendering is entirely a horrible hack
793 &DisplayDiffHunk::Folded { display_row: row } => {
794 let start_y = row as f32 * line_height - scroll_top;
795 let end_y = start_y + line_height;
796
797 let width = 0.275 * line_height;
798 let highlight_origin = bounds.origin + point(-width, start_y);
799 let highlight_size = size(width * 2., end_y - start_y);
800 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
801 cx.paint_quad(quad(
802 highlight_bounds,
803 Corners::all(1. * line_height),
804 cx.theme().status().modified,
805 Edges::default(),
806 transparent_black(),
807 ));
808
809 continue;
810 }
811
812 DisplayDiffHunk::Unfolded {
813 display_row_range,
814 status,
815 } => (display_row_range, status),
816 };
817
818 let color = match status {
819 DiffHunkStatus::Added => cx.theme().status().created,
820 DiffHunkStatus::Modified => cx.theme().status().modified,
821
822 //TODO: This rendering is entirely a horrible hack
823 DiffHunkStatus::Removed => {
824 let row = display_row_range.start;
825
826 let offset = line_height / 2.;
827 let start_y = row as f32 * line_height - offset - scroll_top;
828 let end_y = start_y + line_height;
829
830 let width = 0.275 * line_height;
831 let highlight_origin = bounds.origin + point(-width, start_y);
832 let highlight_size = size(width * 2., end_y - start_y);
833 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
834 cx.paint_quad(quad(
835 highlight_bounds,
836 Corners::all(1. * line_height),
837 cx.theme().status().deleted,
838 Edges::default(),
839 transparent_black(),
840 ));
841
842 continue;
843 }
844 };
845
846 let start_row = display_row_range.start;
847 let end_row = display_row_range.end;
848 // If we're in a multibuffer, row range span might include an
849 // excerpt header, so if we were to draw the marker straight away,
850 // the hunk might include the rows of that header.
851 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
852 // Instead, we simply check whether the range we're dealing with includes
853 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
854 let end_row_in_current_excerpt = layout
855 .position_map
856 .snapshot
857 .blocks_in_range(start_row..end_row)
858 .find_map(|(start_row, block)| {
859 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
860 Some(start_row)
861 } else {
862 None
863 }
864 })
865 .unwrap_or(end_row);
866
867 let start_y = start_row as f32 * line_height - scroll_top;
868 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
869
870 let width = 0.275 * line_height;
871 let highlight_origin = bounds.origin + point(-width, start_y);
872 let highlight_size = size(width * 2., end_y - start_y);
873 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
874 cx.paint_quad(quad(
875 highlight_bounds,
876 Corners::all(0.05 * line_height),
877 color,
878 Edges::default(),
879 transparent_black(),
880 ));
881 }
882 }
883
884 fn paint_text(
885 &mut self,
886 text_bounds: Bounds<Pixels>,
887 layout: &mut LayoutState,
888 cx: &mut WindowContext,
889 ) {
890 let start_row = layout.visible_display_row_range.start;
891 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
892 let line_end_overshoot = 0.15 * layout.position_map.line_height;
893 let whitespace_setting = self
894 .editor
895 .read(cx)
896 .buffer
897 .read(cx)
898 .settings_at(0, cx)
899 .show_whitespaces;
900
901 cx.with_content_mask(
902 Some(ContentMask {
903 bounds: text_bounds,
904 }),
905 |cx| {
906 let interactive_text_bounds = InteractiveBounds {
907 bounds: text_bounds,
908 stacking_order: cx.stacking_order().clone(),
909 };
910 if interactive_text_bounds.visibly_contains(&cx.mouse_position(), cx) {
911 if self
912 .editor
913 .read(cx)
914 .link_go_to_definition_state
915 .definitions
916 .is_empty()
917 {
918 cx.set_cursor_style(CursorStyle::IBeam);
919 } else {
920 cx.set_cursor_style(CursorStyle::PointingHand);
921 }
922 }
923
924 let fold_corner_radius = 0.15 * layout.position_map.line_height;
925 cx.with_element_id(Some("folds"), |cx| {
926 let snapshot = &layout.position_map.snapshot;
927
928 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
929 let fold_range = fold.range.clone();
930 let display_range = fold.range.start.to_display_point(&snapshot)
931 ..fold.range.end.to_display_point(&snapshot);
932 debug_assert_eq!(display_range.start.row(), display_range.end.row());
933 let row = display_range.start.row();
934 debug_assert!(row < layout.visible_display_row_range.end);
935 let Some(line_layout) = &layout
936 .position_map
937 .line_layouts
938 .get((row - layout.visible_display_row_range.start) as usize)
939 .map(|l| &l.line)
940 else {
941 continue;
942 };
943
944 let start_x = content_origin.x
945 + line_layout.x_for_index(display_range.start.column() as usize)
946 - layout.position_map.scroll_position.x;
947 let start_y = content_origin.y
948 + row as f32 * layout.position_map.line_height
949 - layout.position_map.scroll_position.y;
950 let end_x = content_origin.x
951 + line_layout.x_for_index(display_range.end.column() as usize)
952 - layout.position_map.scroll_position.x;
953
954 let fold_bounds = Bounds {
955 origin: point(start_x, start_y),
956 size: size(end_x - start_x, layout.position_map.line_height),
957 };
958
959 let fold_background = cx.with_z_index(1, |cx| {
960 div()
961 .id(fold.id)
962 .size_full()
963 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
964 .on_click(cx.listener_for(
965 &self.editor,
966 move |editor: &mut Editor, _, cx| {
967 editor.unfold_ranges(
968 [fold_range.start..fold_range.end],
969 true,
970 false,
971 cx,
972 );
973 cx.stop_propagation();
974 },
975 ))
976 .draw_and_update_state(
977 fold_bounds.origin,
978 fold_bounds.size,
979 cx,
980 |fold_element_state, cx| {
981 if fold_element_state.is_active() {
982 cx.theme().colors().ghost_element_active
983 } else if fold_bounds.contains(&cx.mouse_position()) {
984 cx.theme().colors().ghost_element_hover
985 } else {
986 cx.theme().colors().ghost_element_background
987 }
988 },
989 )
990 });
991
992 self.paint_highlighted_range(
993 display_range.clone(),
994 fold_background,
995 fold_corner_radius,
996 fold_corner_radius * 2.,
997 layout,
998 content_origin,
999 text_bounds,
1000 cx,
1001 );
1002 }
1003 });
1004
1005 for (range, color) in &layout.highlighted_ranges {
1006 self.paint_highlighted_range(
1007 range.clone(),
1008 *color,
1009 Pixels::ZERO,
1010 line_end_overshoot,
1011 layout,
1012 content_origin,
1013 text_bounds,
1014 cx,
1015 );
1016 }
1017
1018 let mut cursors = SmallVec::<[Cursor; 32]>::new();
1019 let corner_radius = 0.15 * layout.position_map.line_height;
1020 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
1021
1022 for (participant_ix, (selection_style, selections)) in
1023 layout.selections.iter().enumerate()
1024 {
1025 for selection in selections.into_iter() {
1026 self.paint_highlighted_range(
1027 selection.range.clone(),
1028 selection_style.selection,
1029 corner_radius,
1030 corner_radius * 2.,
1031 layout,
1032 content_origin,
1033 text_bounds,
1034 cx,
1035 );
1036
1037 if selection.is_local && !selection.range.is_empty() {
1038 invisible_display_ranges.push(selection.range.clone());
1039 }
1040
1041 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
1042 let cursor_position = selection.head;
1043 if layout
1044 .visible_display_row_range
1045 .contains(&cursor_position.row())
1046 {
1047 let cursor_row_layout = &layout.position_map.line_layouts
1048 [(cursor_position.row() - start_row) as usize]
1049 .line;
1050 let cursor_column = cursor_position.column() as usize;
1051
1052 let cursor_character_x =
1053 cursor_row_layout.x_for_index(cursor_column);
1054 let mut block_width = cursor_row_layout
1055 .x_for_index(cursor_column + 1)
1056 - cursor_character_x;
1057 if block_width == Pixels::ZERO {
1058 block_width = layout.position_map.em_width;
1059 }
1060 let block_text = if let CursorShape::Block = selection.cursor_shape
1061 {
1062 layout
1063 .position_map
1064 .snapshot
1065 .chars_at(cursor_position)
1066 .next()
1067 .and_then(|(character, _)| {
1068 let text = if character == '\n' {
1069 SharedString::from(" ")
1070 } else {
1071 SharedString::from(character.to_string())
1072 };
1073 let len = text.len();
1074 cx.text_system()
1075 .shape_line(
1076 text,
1077 cursor_row_layout.font_size,
1078 &[TextRun {
1079 len,
1080 font: self.style.text.font(),
1081 color: self.style.background,
1082 background_color: None,
1083 underline: None,
1084 }],
1085 )
1086 .log_err()
1087 })
1088 } else {
1089 None
1090 };
1091
1092 let x = cursor_character_x - layout.position_map.scroll_position.x;
1093 let y = cursor_position.row() as f32
1094 * layout.position_map.line_height
1095 - layout.position_map.scroll_position.y;
1096 if selection.is_newest {
1097 self.editor.update(cx, |editor, _| {
1098 editor.pixel_position_of_newest_cursor = Some(point(
1099 text_bounds.origin.x + x + block_width / 2.,
1100 text_bounds.origin.y
1101 + y
1102 + layout.position_map.line_height / 2.,
1103 ))
1104 });
1105 }
1106
1107 cursors.push(Cursor {
1108 color: selection_style.cursor,
1109 block_width,
1110 origin: point(x, y),
1111 line_height: layout.position_map.line_height,
1112 shape: selection.cursor_shape,
1113 block_text,
1114 cursor_name: selection.user_name.clone().map(|name| {
1115 CursorName {
1116 string: name,
1117 color: self.style.background,
1118 is_top_row: cursor_position.row() == 0,
1119 z_index: (participant_ix % 256).try_into().unwrap(),
1120 }
1121 }),
1122 });
1123 }
1124 }
1125 }
1126 }
1127
1128 for (ix, line_with_invisibles) in
1129 layout.position_map.line_layouts.iter().enumerate()
1130 {
1131 let row = start_row + ix as u32;
1132 line_with_invisibles.draw(
1133 layout,
1134 row,
1135 content_origin,
1136 whitespace_setting,
1137 &invisible_display_ranges,
1138 cx,
1139 )
1140 }
1141
1142 cx.with_z_index(0, |cx| {
1143 for cursor in cursors {
1144 cursor.paint(content_origin, cx);
1145 }
1146 });
1147 },
1148 )
1149 }
1150
1151 fn paint_overlays(
1152 &mut self,
1153 text_bounds: Bounds<Pixels>,
1154 layout: &mut LayoutState,
1155 cx: &mut WindowContext,
1156 ) {
1157 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
1158 let start_row = layout.visible_display_row_range.start;
1159 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1160 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1161 let context_menu_size = context_menu.measure(available_space, cx);
1162
1163 let cursor_row_layout =
1164 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1165 let x = cursor_row_layout.x_for_index(position.column() as usize)
1166 - layout.position_map.scroll_position.x;
1167 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1168 - layout.position_map.scroll_position.y;
1169 let mut list_origin = content_origin + point(x, y);
1170 let list_width = context_menu_size.width;
1171 let list_height = context_menu_size.height;
1172
1173 // Snap the right edge of the list to the right edge of the window if
1174 // its horizontal bounds overflow.
1175 if list_origin.x + list_width > cx.viewport_size().width {
1176 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1177 }
1178
1179 if list_origin.y + list_height > text_bounds.lower_right().y {
1180 list_origin.y -= layout.position_map.line_height + list_height;
1181 }
1182
1183 cx.break_content_mask(|cx| context_menu.draw(list_origin, available_space, cx));
1184 }
1185
1186 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1187 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1188
1189 // This is safe because we check on layout whether the required row is available
1190 let hovered_row_layout =
1191 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1192
1193 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1194 // height. This is the size we will use to decide whether to render popovers above or below
1195 // the hovered line.
1196 let first_size = hover_popovers[0].measure(available_space, cx);
1197 let height_to_reserve =
1198 first_size.height + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1199
1200 // Compute Hovered Point
1201 let x = hovered_row_layout.x_for_index(position.column() as usize)
1202 - layout.position_map.scroll_position.x;
1203 let y = position.row() as f32 * layout.position_map.line_height
1204 - layout.position_map.scroll_position.y;
1205 let hovered_point = content_origin + point(x, y);
1206
1207 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1208 // There is enough space above. Render popovers above the hovered point
1209 let mut current_y = hovered_point.y;
1210 for mut hover_popover in hover_popovers {
1211 let size = hover_popover.measure(available_space, cx);
1212 let mut popover_origin = point(hovered_point.x, current_y - size.height);
1213
1214 let x_out_of_bounds =
1215 text_bounds.upper_right().x - (popover_origin.x + size.width);
1216 if x_out_of_bounds < Pixels::ZERO {
1217 popover_origin.x = popover_origin.x + x_out_of_bounds;
1218 }
1219
1220 cx.break_content_mask(|cx| {
1221 hover_popover.draw(popover_origin, available_space, cx)
1222 });
1223
1224 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1225 }
1226 } else {
1227 // There is not enough space above. Render popovers below the hovered point
1228 let mut current_y = hovered_point.y + layout.position_map.line_height;
1229 for mut hover_popover in hover_popovers {
1230 let size = hover_popover.measure(available_space, cx);
1231 let mut popover_origin = point(hovered_point.x, current_y);
1232
1233 let x_out_of_bounds =
1234 text_bounds.upper_right().x - (popover_origin.x + size.width);
1235 if x_out_of_bounds < Pixels::ZERO {
1236 popover_origin.x = popover_origin.x + x_out_of_bounds;
1237 }
1238
1239 hover_popover.draw(popover_origin, available_space, cx);
1240
1241 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1242 }
1243 }
1244 }
1245
1246 if let Some(mouse_context_menu) = self.editor.read(cx).mouse_context_menu.as_ref() {
1247 let element = overlay()
1248 .position(mouse_context_menu.position)
1249 .child(mouse_context_menu.context_menu.clone())
1250 .anchor(AnchorCorner::TopLeft)
1251 .snap_to_window();
1252 element.into_any().draw(
1253 gpui::Point::default(),
1254 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1255 cx,
1256 );
1257 }
1258 }
1259
1260 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1261 bounds.upper_right().x - self.style.scrollbar_width
1262 }
1263
1264 fn paint_scrollbar(
1265 &mut self,
1266 bounds: Bounds<Pixels>,
1267 layout: &mut LayoutState,
1268 cx: &mut WindowContext,
1269 ) {
1270 if layout.mode != EditorMode::Full {
1271 return;
1272 }
1273
1274 // If a drag took place after we started dragging the scrollbar,
1275 // cancel the scrollbar drag.
1276 if cx.has_active_drag() {
1277 self.editor.update(cx, |editor, cx| {
1278 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1279 });
1280 }
1281
1282 let top = bounds.origin.y;
1283 let bottom = bounds.lower_left().y;
1284 let right = bounds.lower_right().x;
1285 let left = self.scrollbar_left(&bounds);
1286 let row_range = layout.scrollbar_row_range.clone();
1287 let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1288
1289 let mut height = bounds.size.height;
1290 let mut first_row_y_offset = px(0.0);
1291
1292 // Impose a minimum height on the scrollbar thumb
1293 let row_height = height / max_row;
1294 let min_thumb_height = layout.position_map.line_height;
1295 let thumb_height = (row_range.end - row_range.start) * row_height;
1296 if thumb_height < min_thumb_height {
1297 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1298 height -= min_thumb_height - thumb_height;
1299 }
1300
1301 let y_for_row = |row: f32| -> Pixels { top + first_row_y_offset + row * row_height };
1302
1303 let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1304 let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1305 let track_bounds = Bounds::from_corners(point(left, top), point(right, bottom));
1306 let thumb_bounds = Bounds::from_corners(point(left, thumb_top), point(right, thumb_bottom));
1307
1308 if layout.show_scrollbars {
1309 cx.paint_quad(quad(
1310 track_bounds,
1311 Corners::default(),
1312 cx.theme().colors().scrollbar_track_background,
1313 Edges {
1314 top: Pixels::ZERO,
1315 right: Pixels::ZERO,
1316 bottom: Pixels::ZERO,
1317 left: px(1.),
1318 },
1319 cx.theme().colors().scrollbar_track_border,
1320 ));
1321 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1322 if layout.is_singleton && scrollbar_settings.selections {
1323 let start_anchor = Anchor::min();
1324 let end_anchor = Anchor::max();
1325 let background_ranges = self
1326 .editor
1327 .read(cx)
1328 .background_highlight_row_ranges::<BufferSearchHighlights>(
1329 start_anchor..end_anchor,
1330 &layout.position_map.snapshot,
1331 50000,
1332 );
1333 for range in background_ranges {
1334 let start_y = y_for_row(range.start().row() as f32);
1335 let mut end_y = y_for_row(range.end().row() as f32);
1336 if end_y - start_y < px(1.) {
1337 end_y = start_y + px(1.);
1338 }
1339 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1340 cx.paint_quad(quad(
1341 bounds,
1342 Corners::default(),
1343 cx.theme().status().info,
1344 Edges {
1345 top: Pixels::ZERO,
1346 right: px(1.),
1347 bottom: Pixels::ZERO,
1348 left: px(1.),
1349 },
1350 cx.theme().colors().scrollbar_thumb_border,
1351 ));
1352 }
1353 }
1354
1355 if layout.is_singleton && scrollbar_settings.git_diff {
1356 for hunk in layout
1357 .position_map
1358 .snapshot
1359 .buffer_snapshot
1360 .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1361 {
1362 let start_display = Point::new(hunk.buffer_range.start, 0)
1363 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1364 let end_display = Point::new(hunk.buffer_range.end, 0)
1365 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1366 let start_y = y_for_row(start_display.row() as f32);
1367 let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1368 y_for_row((end_display.row() + 1) as f32)
1369 } else {
1370 y_for_row((end_display.row()) as f32)
1371 };
1372
1373 if end_y - start_y < px(1.) {
1374 end_y = start_y + px(1.);
1375 }
1376 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1377
1378 let color = match hunk.status() {
1379 DiffHunkStatus::Added => cx.theme().status().created,
1380 DiffHunkStatus::Modified => cx.theme().status().modified,
1381 DiffHunkStatus::Removed => cx.theme().status().deleted,
1382 };
1383 cx.paint_quad(quad(
1384 bounds,
1385 Corners::default(),
1386 color,
1387 Edges {
1388 top: Pixels::ZERO,
1389 right: px(1.),
1390 bottom: Pixels::ZERO,
1391 left: px(1.),
1392 },
1393 cx.theme().colors().scrollbar_thumb_border,
1394 ));
1395 }
1396 }
1397
1398 cx.paint_quad(quad(
1399 thumb_bounds,
1400 Corners::default(),
1401 cx.theme().colors().scrollbar_thumb_background,
1402 Edges {
1403 top: Pixels::ZERO,
1404 right: px(1.),
1405 bottom: Pixels::ZERO,
1406 left: px(1.),
1407 },
1408 cx.theme().colors().scrollbar_thumb_border,
1409 ));
1410 }
1411
1412 let interactive_track_bounds = InteractiveBounds {
1413 bounds: track_bounds,
1414 stacking_order: cx.stacking_order().clone(),
1415 };
1416 let mut mouse_position = cx.mouse_position();
1417 if interactive_track_bounds.visibly_contains(&mouse_position, cx) {
1418 cx.set_cursor_style(CursorStyle::Arrow);
1419 }
1420
1421 cx.on_mouse_event({
1422 let editor = self.editor.clone();
1423 move |event: &MouseMoveEvent, phase, cx| {
1424 if phase == DispatchPhase::Capture {
1425 return;
1426 }
1427
1428 editor.update(cx, |editor, cx| {
1429 if event.pressed_button == Some(MouseButton::Left)
1430 && editor.scroll_manager.is_dragging_scrollbar()
1431 {
1432 let y = mouse_position.y;
1433 let new_y = event.position.y;
1434 if (track_bounds.top()..track_bounds.bottom()).contains(&y) {
1435 let mut position = editor.scroll_position(cx);
1436 position.y += (new_y - y) * (max_row as f32) / height;
1437 if position.y < 0.0 {
1438 position.y = 0.0;
1439 }
1440 editor.set_scroll_position(position, cx);
1441 }
1442
1443 mouse_position = event.position;
1444 cx.stop_propagation();
1445 } else {
1446 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1447 if interactive_track_bounds.visibly_contains(&event.position, cx) {
1448 editor.scroll_manager.show_scrollbar(cx);
1449 }
1450 }
1451 })
1452 }
1453 });
1454
1455 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
1456 cx.on_mouse_event({
1457 let editor = self.editor.clone();
1458 move |_: &MouseUpEvent, phase, cx| {
1459 if phase == DispatchPhase::Capture {
1460 return;
1461 }
1462
1463 editor.update(cx, |editor, cx| {
1464 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1465 cx.stop_propagation();
1466 });
1467 }
1468 });
1469 } else {
1470 cx.on_mouse_event({
1471 let editor = self.editor.clone();
1472 move |event: &MouseDownEvent, phase, cx| {
1473 if phase == DispatchPhase::Capture {
1474 return;
1475 }
1476
1477 editor.update(cx, |editor, cx| {
1478 if track_bounds.contains(&event.position) {
1479 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
1480
1481 let y = event.position.y;
1482 if y < thumb_top || thumb_bottom < y {
1483 let center_row =
1484 ((y - top) * max_row as f32 / height).round() as u32;
1485 let top_row = center_row
1486 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1487 let mut position = editor.scroll_position(cx);
1488 position.y = top_row as f32;
1489 editor.set_scroll_position(position, cx);
1490 } else {
1491 editor.scroll_manager.show_scrollbar(cx);
1492 }
1493
1494 cx.stop_propagation();
1495 }
1496 });
1497 }
1498 });
1499 }
1500 }
1501
1502 #[allow(clippy::too_many_arguments)]
1503 fn paint_highlighted_range(
1504 &self,
1505 range: Range<DisplayPoint>,
1506 color: Hsla,
1507 corner_radius: Pixels,
1508 line_end_overshoot: Pixels,
1509 layout: &LayoutState,
1510 content_origin: gpui::Point<Pixels>,
1511 bounds: Bounds<Pixels>,
1512 cx: &mut WindowContext,
1513 ) {
1514 let start_row = layout.visible_display_row_range.start;
1515 let end_row = layout.visible_display_row_range.end;
1516 if range.start != range.end {
1517 let row_range = if range.end.column() == 0 {
1518 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1519 } else {
1520 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1521 };
1522
1523 let highlighted_range = HighlightedRange {
1524 color,
1525 line_height: layout.position_map.line_height,
1526 corner_radius,
1527 start_y: content_origin.y
1528 + row_range.start as f32 * layout.position_map.line_height
1529 - layout.position_map.scroll_position.y,
1530 lines: row_range
1531 .into_iter()
1532 .map(|row| {
1533 let line_layout =
1534 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1535 HighlightedRangeLine {
1536 start_x: if row == range.start.row() {
1537 content_origin.x
1538 + line_layout.x_for_index(range.start.column() as usize)
1539 - layout.position_map.scroll_position.x
1540 } else {
1541 content_origin.x - layout.position_map.scroll_position.x
1542 },
1543 end_x: if row == range.end.row() {
1544 content_origin.x
1545 + line_layout.x_for_index(range.end.column() as usize)
1546 - layout.position_map.scroll_position.x
1547 } else {
1548 content_origin.x + line_layout.width + line_end_overshoot
1549 - layout.position_map.scroll_position.x
1550 },
1551 }
1552 })
1553 .collect(),
1554 };
1555
1556 highlighted_range.paint(bounds, cx);
1557 }
1558 }
1559
1560 fn paint_blocks(
1561 &mut self,
1562 bounds: Bounds<Pixels>,
1563 layout: &mut LayoutState,
1564 cx: &mut WindowContext,
1565 ) {
1566 let scroll_position = layout.position_map.snapshot.scroll_position();
1567 let scroll_left = scroll_position.x * layout.position_map.em_width;
1568 let scroll_top = scroll_position.y * layout.position_map.line_height;
1569
1570 for mut block in layout.blocks.drain(..) {
1571 let mut origin = bounds.origin
1572 + point(
1573 Pixels::ZERO,
1574 block.row as f32 * layout.position_map.line_height - scroll_top,
1575 );
1576 if !matches!(block.style, BlockStyle::Sticky) {
1577 origin += point(-scroll_left, Pixels::ZERO);
1578 }
1579 block.element.draw(origin, block.available_space, cx);
1580 }
1581 }
1582
1583 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1584 let style = &self.style;
1585 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1586 let layout = cx
1587 .text_system()
1588 .shape_line(
1589 SharedString::from(" ".repeat(column)),
1590 font_size,
1591 &[TextRun {
1592 len: column,
1593 font: style.text.font(),
1594 color: Hsla::default(),
1595 background_color: None,
1596 underline: None,
1597 }],
1598 )
1599 .unwrap();
1600
1601 layout.width
1602 }
1603
1604 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1605 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1606 self.column_pixels(digit_count, cx)
1607 }
1608
1609 //Folds contained in a hunk are ignored apart from shrinking visual size
1610 //If a fold contains any hunks then that fold line is marked as modified
1611 fn layout_git_gutters(
1612 &self,
1613 display_rows: Range<u32>,
1614 snapshot: &EditorSnapshot,
1615 ) -> Vec<DisplayDiffHunk> {
1616 let buffer_snapshot = &snapshot.buffer_snapshot;
1617
1618 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1619 .to_point(snapshot)
1620 .row;
1621 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1622 .to_point(snapshot)
1623 .row;
1624
1625 buffer_snapshot
1626 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1627 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1628 .dedup()
1629 .collect()
1630 }
1631
1632 fn calculate_relative_line_numbers(
1633 &self,
1634 snapshot: &EditorSnapshot,
1635 rows: &Range<u32>,
1636 relative_to: Option<u32>,
1637 ) -> HashMap<u32, u32> {
1638 let mut relative_rows: HashMap<u32, u32> = Default::default();
1639 let Some(relative_to) = relative_to else {
1640 return relative_rows;
1641 };
1642
1643 let start = rows.start.min(relative_to);
1644 let end = rows.end.max(relative_to);
1645
1646 let buffer_rows = snapshot
1647 .buffer_rows(start)
1648 .take(1 + (end - start) as usize)
1649 .collect::<Vec<_>>();
1650
1651 let head_idx = relative_to - start;
1652 let mut delta = 1;
1653 let mut i = head_idx + 1;
1654 while i < buffer_rows.len() as u32 {
1655 if buffer_rows[i as usize].is_some() {
1656 if rows.contains(&(i + start)) {
1657 relative_rows.insert(i + start, delta);
1658 }
1659 delta += 1;
1660 }
1661 i += 1;
1662 }
1663 delta = 1;
1664 i = head_idx.min(buffer_rows.len() as u32 - 1);
1665 while i > 0 && buffer_rows[i as usize].is_none() {
1666 i -= 1;
1667 }
1668
1669 while i > 0 {
1670 i -= 1;
1671 if buffer_rows[i as usize].is_some() {
1672 if rows.contains(&(i + start)) {
1673 relative_rows.insert(i + start, delta);
1674 }
1675 delta += 1;
1676 }
1677 }
1678
1679 relative_rows
1680 }
1681
1682 fn shape_line_numbers(
1683 &self,
1684 rows: Range<u32>,
1685 active_rows: &BTreeMap<u32, bool>,
1686 newest_selection_head: DisplayPoint,
1687 is_singleton: bool,
1688 snapshot: &EditorSnapshot,
1689 cx: &ViewContext<Editor>,
1690 ) -> (
1691 Vec<Option<ShapedLine>>,
1692 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1693 ) {
1694 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1695 let include_line_numbers = snapshot.mode == EditorMode::Full;
1696 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1697 let mut fold_statuses = Vec::with_capacity(rows.len());
1698 let mut line_number = String::new();
1699 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1700 let relative_to = if is_relative {
1701 Some(newest_selection_head.row())
1702 } else {
1703 None
1704 };
1705
1706 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1707
1708 for (ix, row) in snapshot
1709 .buffer_rows(rows.start)
1710 .take((rows.end - rows.start) as usize)
1711 .enumerate()
1712 {
1713 let display_row = rows.start + ix as u32;
1714 let (active, color) = if active_rows.contains_key(&display_row) {
1715 (true, cx.theme().colors().editor_active_line_number)
1716 } else {
1717 (false, cx.theme().colors().editor_line_number)
1718 };
1719 if let Some(buffer_row) = row {
1720 if include_line_numbers {
1721 line_number.clear();
1722 let default_number = buffer_row + 1;
1723 let number = relative_rows
1724 .get(&(ix as u32 + rows.start))
1725 .unwrap_or(&default_number);
1726 write!(&mut line_number, "{}", number).unwrap();
1727 let run = TextRun {
1728 len: line_number.len(),
1729 font: self.style.text.font(),
1730 color,
1731 background_color: None,
1732 underline: None,
1733 };
1734 let shaped_line = cx
1735 .text_system()
1736 .shape_line(line_number.clone().into(), font_size, &[run])
1737 .unwrap();
1738 shaped_line_numbers.push(Some(shaped_line));
1739 fold_statuses.push(
1740 is_singleton
1741 .then(|| {
1742 snapshot
1743 .fold_for_line(buffer_row)
1744 .map(|fold_status| (fold_status, buffer_row, active))
1745 })
1746 .flatten(),
1747 )
1748 }
1749 } else {
1750 fold_statuses.push(None);
1751 shaped_line_numbers.push(None);
1752 }
1753 }
1754
1755 (shaped_line_numbers, fold_statuses)
1756 }
1757
1758 fn layout_lines(
1759 &self,
1760 rows: Range<u32>,
1761 line_number_layouts: &[Option<ShapedLine>],
1762 snapshot: &EditorSnapshot,
1763 cx: &ViewContext<Editor>,
1764 ) -> Vec<LineWithInvisibles> {
1765 if rows.start >= rows.end {
1766 return Vec::new();
1767 }
1768
1769 // Show the placeholder when the editor is empty
1770 if snapshot.is_empty() {
1771 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1772 let placeholder_color = cx.theme().colors().text_placeholder;
1773 let placeholder_text = snapshot.placeholder_text();
1774
1775 let placeholder_lines = placeholder_text
1776 .as_ref()
1777 .map_or("", AsRef::as_ref)
1778 .split('\n')
1779 .skip(rows.start as usize)
1780 .chain(iter::repeat(""))
1781 .take(rows.len());
1782 placeholder_lines
1783 .filter_map(move |line| {
1784 let run = TextRun {
1785 len: line.len(),
1786 font: self.style.text.font(),
1787 color: placeholder_color,
1788 background_color: None,
1789 underline: Default::default(),
1790 };
1791 cx.text_system()
1792 .shape_line(line.to_string().into(), font_size, &[run])
1793 .log_err()
1794 })
1795 .map(|line| LineWithInvisibles {
1796 line,
1797 invisibles: Vec::new(),
1798 })
1799 .collect()
1800 } else {
1801 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1802 LineWithInvisibles::from_chunks(
1803 chunks,
1804 &self.style.text,
1805 MAX_LINE_LEN,
1806 rows.len() as usize,
1807 line_number_layouts,
1808 snapshot.mode,
1809 cx,
1810 )
1811 }
1812 }
1813
1814 fn compute_layout(&mut self, bounds: Bounds<Pixels>, cx: &mut WindowContext) -> LayoutState {
1815 self.editor.update(cx, |editor, cx| {
1816 let snapshot = editor.snapshot(cx);
1817 let style = self.style.clone();
1818
1819 let font_id = cx.text_system().resolve_font(&style.text.font());
1820 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1821 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1822 let em_width = cx
1823 .text_system()
1824 .typographic_bounds(font_id, font_size, 'm')
1825 .unwrap()
1826 .size
1827 .width;
1828 let em_advance = cx
1829 .text_system()
1830 .advance(font_id, font_size, 'm')
1831 .unwrap()
1832 .width;
1833
1834 let gutter_padding;
1835 let gutter_width;
1836 let gutter_margin;
1837 if snapshot.show_gutter {
1838 let descent = cx.text_system().descent(font_id, font_size);
1839
1840 let gutter_padding_factor = 3.5;
1841 gutter_padding = (em_width * gutter_padding_factor).round();
1842 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1843 gutter_margin = -descent;
1844 } else {
1845 gutter_padding = Pixels::ZERO;
1846 gutter_width = Pixels::ZERO;
1847 gutter_margin = Pixels::ZERO;
1848 };
1849
1850 editor.gutter_width = gutter_width;
1851
1852 let text_width = bounds.size.width - gutter_width;
1853 let overscroll = size(em_width, px(0.));
1854 let _snapshot = {
1855 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1856
1857 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1858 let wrap_width = match editor.soft_wrap_mode(cx) {
1859 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1860 SoftWrap::EditorWidth => editor_width,
1861 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1862 };
1863
1864 if editor.set_wrap_width(Some(wrap_width), cx) {
1865 editor.snapshot(cx)
1866 } else {
1867 snapshot
1868 }
1869 };
1870
1871 let wrap_guides = editor
1872 .wrap_guides(cx)
1873 .iter()
1874 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1875 .collect::<SmallVec<[_; 2]>>();
1876
1877 let gutter_size = size(gutter_width, bounds.size.height);
1878 let text_size = size(text_width, bounds.size.height);
1879
1880 let autoscroll_horizontally =
1881 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1882 let mut snapshot = editor.snapshot(cx);
1883
1884 let scroll_position = snapshot.scroll_position();
1885 // The scroll position is a fractional point, the whole number of which represents
1886 // the top of the window in terms of display rows.
1887 let start_row = scroll_position.y as u32;
1888 let height_in_lines = f32::from(bounds.size.height / line_height);
1889 let max_row = snapshot.max_point().row();
1890
1891 // Add 1 to ensure selections bleed off screen
1892 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1893
1894 let start_anchor = if start_row == 0 {
1895 Anchor::min()
1896 } else {
1897 snapshot
1898 .buffer_snapshot
1899 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1900 };
1901 let end_anchor = if end_row > max_row {
1902 Anchor::max()
1903 } else {
1904 snapshot
1905 .buffer_snapshot
1906 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1907 };
1908
1909 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1910 let mut active_rows = BTreeMap::new();
1911 let is_singleton = editor.is_singleton(cx);
1912
1913 let highlighted_rows = editor.highlighted_rows();
1914 let highlighted_ranges = editor.background_highlights_in_range(
1915 start_anchor..end_anchor,
1916 &snapshot.display_snapshot,
1917 cx.theme().colors(),
1918 );
1919
1920 let mut newest_selection_head = None;
1921
1922 if editor.show_local_selections {
1923 let mut local_selections: Vec<Selection<Point>> = editor
1924 .selections
1925 .disjoint_in_range(start_anchor..end_anchor, cx);
1926 local_selections.extend(editor.selections.pending(cx));
1927 let mut layouts = Vec::new();
1928 let newest = editor.selections.newest(cx);
1929 for selection in local_selections.drain(..) {
1930 let is_empty = selection.start == selection.end;
1931 let is_newest = selection == newest;
1932
1933 let layout = SelectionLayout::new(
1934 selection,
1935 editor.selections.line_mode,
1936 editor.cursor_shape,
1937 &snapshot.display_snapshot,
1938 is_newest,
1939 true,
1940 None,
1941 );
1942 if is_newest {
1943 newest_selection_head = Some(layout.head);
1944 }
1945
1946 for row in cmp::max(layout.active_rows.start, start_row)
1947 ..=cmp::min(layout.active_rows.end, end_row)
1948 {
1949 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1950 *contains_non_empty_selection |= !is_empty;
1951 }
1952 layouts.push(layout);
1953 }
1954
1955 let player = if editor.read_only(cx) {
1956 cx.theme().players().read_only()
1957 } else {
1958 style.local_player
1959 };
1960
1961 selections.push((player, layouts));
1962 }
1963
1964 if let Some(collaboration_hub) = &editor.collaboration_hub {
1965 // When following someone, render the local selections in their color.
1966 if let Some(leader_id) = editor.leader_peer_id {
1967 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1968 if let Some(participant_index) = collaboration_hub
1969 .user_participant_indices(cx)
1970 .get(&collaborator.user_id)
1971 {
1972 if let Some((local_selection_style, _)) = selections.first_mut() {
1973 *local_selection_style = cx
1974 .theme()
1975 .players()
1976 .color_for_participant(participant_index.0);
1977 }
1978 }
1979 }
1980 }
1981
1982 let mut remote_selections = HashMap::default();
1983 for selection in snapshot.remote_selections_in_range(
1984 &(start_anchor..end_anchor),
1985 collaboration_hub.as_ref(),
1986 cx,
1987 ) {
1988 let selection_style = if let Some(participant_index) = selection.participant_index {
1989 cx.theme()
1990 .players()
1991 .color_for_participant(participant_index.0)
1992 } else {
1993 cx.theme().players().absent()
1994 };
1995
1996 // Don't re-render the leader's selections, since the local selections
1997 // match theirs.
1998 if Some(selection.peer_id) == editor.leader_peer_id {
1999 continue;
2000 }
2001 let is_shown = editor.recently_focused || editor.hovered_cursor.as_ref().is_some_and(|c| c.replica_id == selection.replica_id && c.selection_id == selection.selection.id);
2002
2003 remote_selections
2004 .entry(selection.replica_id)
2005 .or_insert((selection_style, Vec::new()))
2006 .1
2007 .push(SelectionLayout::new(
2008 selection.selection,
2009 selection.line_mode,
2010 selection.cursor_shape,
2011 &snapshot.display_snapshot,
2012 false,
2013 false,
2014 if is_shown {
2015 selection.user_name
2016 } else {
2017 None
2018 },
2019 ));
2020 }
2021
2022 selections.extend(remote_selections.into_values());
2023 }
2024
2025 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2026 let show_scrollbars = match scrollbar_settings.show {
2027 ShowScrollbar::Auto => {
2028 // Git
2029 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2030 ||
2031 // Selections
2032 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
2033 // Scrollmanager
2034 || editor.scroll_manager.scrollbars_visible()
2035 }
2036 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2037 ShowScrollbar::Always => true,
2038 ShowScrollbar::Never => false,
2039 };
2040
2041 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2042 let newest = editor.selections.newest::<Point>(cx);
2043 SelectionLayout::new(
2044 newest,
2045 editor.selections.line_mode,
2046 editor.cursor_shape,
2047 &snapshot.display_snapshot,
2048 true,
2049 true,
2050 None,
2051 )
2052 .head
2053 });
2054
2055 let (line_numbers, fold_statuses) = self.shape_line_numbers(
2056 start_row..end_row,
2057 &active_rows,
2058 head_for_relative,
2059 is_singleton,
2060 &snapshot,
2061 cx,
2062 );
2063
2064 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2065
2066 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2067
2068 let mut max_visible_line_width = Pixels::ZERO;
2069 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
2070 for line_with_invisibles in &line_layouts {
2071 if line_with_invisibles.line.width > max_visible_line_width {
2072 max_visible_line_width = line_with_invisibles.line.width;
2073 }
2074 }
2075
2076 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
2077 .unwrap()
2078 .width;
2079 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
2080
2081 let (scroll_width, blocks) = cx.with_element_id(Some("editor_blocks"), |cx| {
2082 self.layout_blocks(
2083 start_row..end_row,
2084 &snapshot,
2085 bounds.size.width,
2086 scroll_width,
2087 gutter_padding,
2088 gutter_width,
2089 em_width,
2090 gutter_width + gutter_margin,
2091 line_height,
2092 &style,
2093 &line_layouts,
2094 editor,
2095 cx,
2096 )
2097 });
2098
2099 let scroll_max = point(
2100 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
2101 max_row as f32,
2102 );
2103
2104 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2105
2106 let autoscrolled = if autoscroll_horizontally {
2107 editor.autoscroll_horizontally(
2108 start_row,
2109 text_size.width,
2110 scroll_width,
2111 em_width,
2112 &line_layouts,
2113 cx,
2114 )
2115 } else {
2116 false
2117 };
2118
2119 if clamped || autoscrolled {
2120 snapshot = editor.snapshot(cx);
2121 }
2122
2123 let mut context_menu = None;
2124 let mut code_actions_indicator = None;
2125 if let Some(newest_selection_head) = newest_selection_head {
2126 if (start_row..end_row).contains(&newest_selection_head.row()) {
2127 if editor.context_menu_visible() {
2128 let max_height = (12. * line_height).min((bounds.size.height - line_height) / 2.);
2129 context_menu =
2130 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2131 }
2132
2133 let active = matches!(
2134 editor.context_menu.read().as_ref(),
2135 Some(crate::ContextMenu::CodeActions(_))
2136 );
2137
2138 code_actions_indicator = editor
2139 .render_code_actions_indicator(&style, active, cx)
2140 .map(|element| CodeActionsIndicator {
2141 row: newest_selection_head.row(),
2142 button: element,
2143 });
2144 }
2145 }
2146
2147 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2148 let max_size = size(
2149 (120. * em_width) // Default size
2150 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2151 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2152 (16. * line_height) // Default size
2153 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2154 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2155 );
2156
2157 let hover = editor.hover_state.render(
2158 &snapshot,
2159 &style,
2160 visible_rows,
2161 max_size,
2162 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2163 cx,
2164 );
2165
2166 let fold_indicators = cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2167 editor.render_fold_indicators(
2168 fold_statuses,
2169 &style,
2170 editor.gutter_hovered,
2171 line_height,
2172 gutter_margin,
2173 cx,
2174 )
2175 });
2176
2177 let invisible_symbol_font_size = font_size / 2.;
2178 let tab_invisible = cx
2179 .text_system()
2180 .shape_line(
2181 "→".into(),
2182 invisible_symbol_font_size,
2183 &[TextRun {
2184 len: "→".len(),
2185 font: self.style.text.font(),
2186 color: cx.theme().colors().editor_invisible,
2187 background_color: None,
2188 underline: None,
2189 }],
2190 )
2191 .unwrap();
2192 let space_invisible = cx
2193 .text_system()
2194 .shape_line(
2195 "•".into(),
2196 invisible_symbol_font_size,
2197 &[TextRun {
2198 len: "•".len(),
2199 font: self.style.text.font(),
2200 color: cx.theme().colors().editor_invisible,
2201 background_color: None,
2202 underline: None,
2203 }],
2204 )
2205 .unwrap();
2206
2207 LayoutState {
2208 mode: snapshot.mode,
2209 position_map: Arc::new(PositionMap {
2210 size: bounds.size,
2211 scroll_position: point(
2212 scroll_position.x * em_width,
2213 scroll_position.y * line_height,
2214 ),
2215 scroll_max,
2216 line_layouts,
2217 line_height,
2218 em_width,
2219 em_advance,
2220 snapshot,
2221 }),
2222 visible_anchor_range: start_anchor..end_anchor,
2223 visible_display_row_range: start_row..end_row,
2224 wrap_guides,
2225 gutter_size,
2226 gutter_padding,
2227 text_size,
2228 scrollbar_row_range,
2229 show_scrollbars,
2230 is_singleton,
2231 max_row,
2232 gutter_margin,
2233 active_rows,
2234 highlighted_rows,
2235 highlighted_ranges,
2236 line_numbers,
2237 display_hunks,
2238 blocks,
2239 selections,
2240 context_menu,
2241 code_actions_indicator,
2242 fold_indicators,
2243 tab_invisible,
2244 space_invisible,
2245 hover_popovers: hover,
2246 }
2247 })
2248 }
2249
2250 #[allow(clippy::too_many_arguments)]
2251 fn layout_blocks(
2252 &self,
2253 rows: Range<u32>,
2254 snapshot: &EditorSnapshot,
2255 editor_width: Pixels,
2256 scroll_width: Pixels,
2257 gutter_padding: Pixels,
2258 gutter_width: Pixels,
2259 em_width: Pixels,
2260 text_x: Pixels,
2261 line_height: Pixels,
2262 style: &EditorStyle,
2263 line_layouts: &[LineWithInvisibles],
2264 editor: &mut Editor,
2265 cx: &mut ViewContext<Editor>,
2266 ) -> (Pixels, Vec<BlockLayout>) {
2267 let mut block_id = 0;
2268 let (fixed_blocks, non_fixed_blocks) = snapshot
2269 .blocks_in_range(rows.clone())
2270 .partition::<Vec<_>, _>(|(_, block)| match block {
2271 TransformBlock::ExcerptHeader { .. } => false,
2272 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2273 });
2274
2275 let render_block = |block: &TransformBlock,
2276 available_space: Size<AvailableSpace>,
2277 block_id: usize,
2278 editor: &mut Editor,
2279 cx: &mut ViewContext<Editor>| {
2280 let mut element = match block {
2281 TransformBlock::Custom(block) => {
2282 let align_to = block
2283 .position()
2284 .to_point(&snapshot.buffer_snapshot)
2285 .to_display_point(snapshot);
2286 let anchor_x = text_x
2287 + if rows.contains(&align_to.row()) {
2288 line_layouts[(align_to.row() - rows.start) as usize]
2289 .line
2290 .x_for_index(align_to.column() as usize)
2291 } else {
2292 layout_line(align_to.row(), snapshot, style, cx)
2293 .unwrap()
2294 .x_for_index(align_to.column() as usize)
2295 };
2296
2297 block.render(&mut BlockContext {
2298 view_context: cx,
2299 anchor_x,
2300 gutter_padding,
2301 line_height,
2302 gutter_width,
2303 em_width,
2304 block_id,
2305 editor_style: &self.style,
2306 })
2307 }
2308
2309 TransformBlock::ExcerptHeader {
2310 buffer,
2311 range,
2312 starts_new_buffer,
2313 ..
2314 } => {
2315 let include_root = editor
2316 .project
2317 .as_ref()
2318 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2319 .unwrap_or_default();
2320
2321 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2322 let jump_path = ProjectPath {
2323 worktree_id: file.worktree_id(cx),
2324 path: file.path.clone(),
2325 };
2326 let jump_anchor = range
2327 .primary
2328 .as_ref()
2329 .map_or(range.context.start, |primary| primary.start);
2330 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2331
2332 cx.listener_for(&self.editor, move |editor, _, cx| {
2333 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2334 })
2335 });
2336
2337 let element = if *starts_new_buffer {
2338 let path = buffer.resolve_file_path(cx, include_root);
2339 let mut filename = None;
2340 let mut parent_path = None;
2341 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2342 if let Some(path) = path {
2343 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2344 parent_path = path
2345 .parent()
2346 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2347 }
2348
2349 v_flex()
2350 .id(("path header container", block_id))
2351 .size_full()
2352 .justify_center()
2353 .p(gpui::px(6.))
2354 .child(
2355 h_flex()
2356 .id("path header block")
2357 .size_full()
2358 .pl(gpui::px(12.))
2359 .pr(gpui::px(8.))
2360 .rounded_md()
2361 .shadow_md()
2362 .border()
2363 .border_color(cx.theme().colors().border)
2364 .bg(cx.theme().colors().editor_subheader_background)
2365 .justify_between()
2366 .hover(|style| style.bg(cx.theme().colors().element_hover))
2367 .child(
2368 h_flex().gap_3().child(
2369 h_flex()
2370 .gap_2()
2371 .child(
2372 filename
2373 .map(SharedString::from)
2374 .unwrap_or_else(|| "untitled".into()),
2375 )
2376 .when_some(parent_path, |then, path| {
2377 then.child(
2378 div().child(path).text_color(
2379 cx.theme().colors().text_muted,
2380 ),
2381 )
2382 }),
2383 ),
2384 )
2385 .when_some(jump_handler, |this, jump_handler| {
2386 this.cursor_pointer()
2387 .tooltip(|cx| {
2388 Tooltip::for_action(
2389 "Jump to Buffer",
2390 &OpenExcerpts,
2391 cx,
2392 )
2393 })
2394 .on_mouse_down(MouseButton::Left, |_, cx| {
2395 cx.stop_propagation()
2396 })
2397 .on_click(jump_handler)
2398 }),
2399 )
2400 } else {
2401 h_flex()
2402 .id(("collapsed context", block_id))
2403 .size_full()
2404 .gap(gutter_padding)
2405 .child(
2406 h_flex()
2407 .justify_end()
2408 .flex_none()
2409 .w(gutter_width - gutter_padding)
2410 .h_full()
2411 .text_buffer(cx)
2412 .text_color(cx.theme().colors().editor_line_number)
2413 .child("..."),
2414 )
2415 .child(
2416 ButtonLike::new("jump to collapsed context")
2417 .style(ButtonStyle::Transparent)
2418 .full_width()
2419 .child(
2420 div()
2421 .h_px()
2422 .w_full()
2423 .bg(cx.theme().colors().border_variant)
2424 .group_hover("", |style| {
2425 style.bg(cx.theme().colors().border)
2426 }),
2427 )
2428 .when_some(jump_handler, |this, jump_handler| {
2429 this.on_click(jump_handler).tooltip(|cx| {
2430 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2431 })
2432 }),
2433 )
2434 };
2435 element.into_any()
2436 }
2437 };
2438
2439 let size = element.measure(available_space, cx);
2440 (element, size)
2441 };
2442
2443 let mut fixed_block_max_width = Pixels::ZERO;
2444 let mut blocks = Vec::new();
2445 for (row, block) in fixed_blocks {
2446 let available_space = size(
2447 AvailableSpace::MinContent,
2448 AvailableSpace::Definite(block.height() as f32 * line_height),
2449 );
2450 let (element, element_size) =
2451 render_block(block, available_space, block_id, editor, cx);
2452 block_id += 1;
2453 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2454 blocks.push(BlockLayout {
2455 row,
2456 element,
2457 available_space,
2458 style: BlockStyle::Fixed,
2459 });
2460 }
2461 for (row, block) in non_fixed_blocks {
2462 let style = match block {
2463 TransformBlock::Custom(block) => block.style(),
2464 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2465 };
2466 let width = match style {
2467 BlockStyle::Sticky => editor_width,
2468 BlockStyle::Flex => editor_width
2469 .max(fixed_block_max_width)
2470 .max(gutter_width + scroll_width),
2471 BlockStyle::Fixed => unreachable!(),
2472 };
2473 let available_space = size(
2474 AvailableSpace::Definite(width),
2475 AvailableSpace::Definite(block.height() as f32 * line_height),
2476 );
2477 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2478 block_id += 1;
2479 blocks.push(BlockLayout {
2480 row,
2481 element,
2482 available_space,
2483 style,
2484 });
2485 }
2486 (
2487 scroll_width.max(fixed_block_max_width - gutter_width),
2488 blocks,
2489 )
2490 }
2491
2492 fn paint_scroll_wheel_listener(
2493 &mut self,
2494 interactive_bounds: &InteractiveBounds,
2495 layout: &LayoutState,
2496 cx: &mut WindowContext,
2497 ) {
2498 cx.on_mouse_event({
2499 let position_map = layout.position_map.clone();
2500 let editor = self.editor.clone();
2501 let interactive_bounds = interactive_bounds.clone();
2502 let mut delta = ScrollDelta::default();
2503
2504 move |event: &ScrollWheelEvent, phase, cx| {
2505 if phase == DispatchPhase::Bubble
2506 && interactive_bounds.visibly_contains(&event.position, cx)
2507 {
2508 delta = delta.coalesce(event.delta);
2509 editor.update(cx, |editor, cx| {
2510 let position = event.position;
2511 let position_map: &PositionMap = &position_map;
2512 let bounds = &interactive_bounds;
2513 if !bounds.visibly_contains(&position, cx) {
2514 return;
2515 }
2516
2517 let line_height = position_map.line_height;
2518 let max_glyph_width = position_map.em_width;
2519 let (delta, axis) = match delta {
2520 gpui::ScrollDelta::Pixels(mut pixels) => {
2521 //Trackpad
2522 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2523 (pixels, axis)
2524 }
2525
2526 gpui::ScrollDelta::Lines(lines) => {
2527 //Not trackpad
2528 let pixels =
2529 point(lines.x * max_glyph_width, lines.y * line_height);
2530 (pixels, None)
2531 }
2532 };
2533
2534 let scroll_position = position_map.snapshot.scroll_position();
2535 let x = f32::from(
2536 (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width,
2537 );
2538 let y =
2539 f32::from((scroll_position.y * line_height - delta.y) / line_height);
2540 let scroll_position =
2541 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2542 editor.scroll(scroll_position, axis, cx);
2543 cx.stop_propagation();
2544 });
2545 }
2546 }
2547 });
2548 }
2549
2550 fn paint_mouse_listeners(
2551 &mut self,
2552 bounds: Bounds<Pixels>,
2553 gutter_bounds: Bounds<Pixels>,
2554 text_bounds: Bounds<Pixels>,
2555 layout: &LayoutState,
2556 cx: &mut WindowContext,
2557 ) {
2558 let interactive_bounds = InteractiveBounds {
2559 bounds: bounds.intersect(&cx.content_mask().bounds),
2560 stacking_order: cx.stacking_order().clone(),
2561 };
2562
2563 self.paint_scroll_wheel_listener(&interactive_bounds, layout, cx);
2564
2565 cx.on_mouse_event({
2566 let position_map = layout.position_map.clone();
2567 let editor = self.editor.clone();
2568 let stacking_order = cx.stacking_order().clone();
2569 let interactive_bounds = interactive_bounds.clone();
2570
2571 move |event: &MouseDownEvent, phase, cx| {
2572 if phase == DispatchPhase::Bubble
2573 && interactive_bounds.visibly_contains(&event.position, cx)
2574 {
2575 match event.button {
2576 MouseButton::Left => editor.update(cx, |editor, cx| {
2577 Self::mouse_left_down(
2578 editor,
2579 event,
2580 &position_map,
2581 text_bounds,
2582 gutter_bounds,
2583 &stacking_order,
2584 cx,
2585 );
2586 }),
2587 MouseButton::Right => editor.update(cx, |editor, cx| {
2588 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx);
2589 }),
2590 _ => {}
2591 };
2592 }
2593 }
2594 });
2595
2596 cx.on_mouse_event({
2597 let position_map = layout.position_map.clone();
2598 let editor = self.editor.clone();
2599 let stacking_order = cx.stacking_order().clone();
2600 let interactive_bounds = interactive_bounds.clone();
2601
2602 move |event: &MouseUpEvent, phase, cx| {
2603 if phase == DispatchPhase::Bubble {
2604 editor.update(cx, |editor, cx| {
2605 Self::mouse_up(
2606 editor,
2607 event,
2608 &position_map,
2609 text_bounds,
2610 &interactive_bounds,
2611 &stacking_order,
2612 cx,
2613 )
2614 });
2615 }
2616 }
2617 });
2618 cx.on_mouse_event({
2619 let position_map = layout.position_map.clone();
2620 let editor = self.editor.clone();
2621 let stacking_order = cx.stacking_order().clone();
2622
2623 move |event: &MouseMoveEvent, phase, cx| {
2624 // if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
2625
2626 if phase == DispatchPhase::Bubble {
2627 editor.update(cx, |editor, cx| {
2628 if event.pressed_button == Some(MouseButton::Left) {
2629 Self::mouse_dragged(
2630 editor,
2631 event,
2632 &position_map,
2633 text_bounds,
2634 gutter_bounds,
2635 &stacking_order,
2636 cx,
2637 )
2638 }
2639
2640 if interactive_bounds.visibly_contains(&event.position, cx) {
2641 Self::mouse_moved(
2642 editor,
2643 event,
2644 &position_map,
2645 text_bounds,
2646 gutter_bounds,
2647 &stacking_order,
2648 cx,
2649 )
2650 }
2651 });
2652 }
2653 }
2654 });
2655 }
2656}
2657
2658#[derive(Debug)]
2659pub(crate) struct LineWithInvisibles {
2660 pub line: ShapedLine,
2661 invisibles: Vec<Invisible>,
2662}
2663
2664impl LineWithInvisibles {
2665 fn from_chunks<'a>(
2666 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2667 text_style: &TextStyle,
2668 max_line_len: usize,
2669 max_line_count: usize,
2670 line_number_layouts: &[Option<ShapedLine>],
2671 editor_mode: EditorMode,
2672 cx: &WindowContext,
2673 ) -> Vec<Self> {
2674 let mut layouts = Vec::with_capacity(max_line_count);
2675 let mut line = String::new();
2676 let mut invisibles = Vec::new();
2677 let mut styles = Vec::new();
2678 let mut non_whitespace_added = false;
2679 let mut row = 0;
2680 let mut line_exceeded_max_len = false;
2681 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2682
2683 for highlighted_chunk in chunks.chain([HighlightedChunk {
2684 chunk: "\n",
2685 style: None,
2686 is_tab: false,
2687 }]) {
2688 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2689 if ix > 0 {
2690 let shaped_line = cx
2691 .text_system()
2692 .shape_line(line.clone().into(), font_size, &styles)
2693 .unwrap();
2694 layouts.push(Self {
2695 line: shaped_line,
2696 invisibles: invisibles.drain(..).collect(),
2697 });
2698
2699 line.clear();
2700 styles.clear();
2701 row += 1;
2702 line_exceeded_max_len = false;
2703 non_whitespace_added = false;
2704 if row == max_line_count {
2705 return layouts;
2706 }
2707 }
2708
2709 if !line_chunk.is_empty() && !line_exceeded_max_len {
2710 let text_style = if let Some(style) = highlighted_chunk.style {
2711 Cow::Owned(text_style.clone().highlight(style))
2712 } else {
2713 Cow::Borrowed(text_style)
2714 };
2715
2716 if line.len() + line_chunk.len() > max_line_len {
2717 let mut chunk_len = max_line_len - line.len();
2718 while !line_chunk.is_char_boundary(chunk_len) {
2719 chunk_len -= 1;
2720 }
2721 line_chunk = &line_chunk[..chunk_len];
2722 line_exceeded_max_len = true;
2723 }
2724
2725 styles.push(TextRun {
2726 len: line_chunk.len(),
2727 font: text_style.font(),
2728 color: text_style.color,
2729 background_color: text_style.background_color,
2730 underline: text_style.underline,
2731 });
2732
2733 if editor_mode == EditorMode::Full {
2734 // Line wrap pads its contents with fake whitespaces,
2735 // avoid printing them
2736 let inside_wrapped_string = line_number_layouts
2737 .get(row)
2738 .and_then(|layout| layout.as_ref())
2739 .is_none();
2740 if highlighted_chunk.is_tab {
2741 if non_whitespace_added || !inside_wrapped_string {
2742 invisibles.push(Invisible::Tab {
2743 line_start_offset: line.len(),
2744 });
2745 }
2746 } else {
2747 invisibles.extend(
2748 line_chunk
2749 .chars()
2750 .enumerate()
2751 .filter(|(_, line_char)| {
2752 let is_whitespace = line_char.is_whitespace();
2753 non_whitespace_added |= !is_whitespace;
2754 is_whitespace
2755 && (non_whitespace_added || !inside_wrapped_string)
2756 })
2757 .map(|(whitespace_index, _)| Invisible::Whitespace {
2758 line_offset: line.len() + whitespace_index,
2759 }),
2760 )
2761 }
2762 }
2763
2764 line.push_str(line_chunk);
2765 }
2766 }
2767 }
2768
2769 layouts
2770 }
2771
2772 fn draw(
2773 &self,
2774 layout: &LayoutState,
2775 row: u32,
2776 content_origin: gpui::Point<Pixels>,
2777 whitespace_setting: ShowWhitespaceSetting,
2778 selection_ranges: &[Range<DisplayPoint>],
2779 cx: &mut WindowContext,
2780 ) {
2781 let line_height = layout.position_map.line_height;
2782 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2783
2784 self.line
2785 .paint(
2786 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2787 line_height,
2788 cx,
2789 )
2790 .log_err();
2791
2792 self.draw_invisibles(
2793 &selection_ranges,
2794 layout,
2795 content_origin,
2796 line_y,
2797 row,
2798 line_height,
2799 whitespace_setting,
2800 cx,
2801 );
2802 }
2803
2804 fn draw_invisibles(
2805 &self,
2806 selection_ranges: &[Range<DisplayPoint>],
2807 layout: &LayoutState,
2808 content_origin: gpui::Point<Pixels>,
2809 line_y: Pixels,
2810 row: u32,
2811 line_height: Pixels,
2812 whitespace_setting: ShowWhitespaceSetting,
2813 cx: &mut WindowContext,
2814 ) {
2815 let allowed_invisibles_regions = match whitespace_setting {
2816 ShowWhitespaceSetting::None => return,
2817 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2818 ShowWhitespaceSetting::All => None,
2819 };
2820
2821 for invisible in &self.invisibles {
2822 let (&token_offset, invisible_symbol) = match invisible {
2823 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2824 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2825 };
2826
2827 let x_offset = self.line.x_for_index(token_offset);
2828 let invisible_offset =
2829 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2830 let origin = content_origin
2831 + gpui::point(
2832 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2833 line_y,
2834 );
2835
2836 if let Some(allowed_regions) = allowed_invisibles_regions {
2837 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2838 if !allowed_regions
2839 .iter()
2840 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2841 {
2842 continue;
2843 }
2844 }
2845 invisible_symbol.paint(origin, line_height, cx).log_err();
2846 }
2847 }
2848}
2849
2850#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2851enum Invisible {
2852 Tab { line_start_offset: usize },
2853 Whitespace { line_offset: usize },
2854}
2855
2856impl Element for EditorElement {
2857 type State = ();
2858
2859 fn request_layout(
2860 &mut self,
2861 _element_state: Option<Self::State>,
2862 cx: &mut gpui::WindowContext,
2863 ) -> (gpui::LayoutId, Self::State) {
2864 cx.with_view_id(self.editor.entity_id(), |cx| {
2865 self.editor.update(cx, |editor, cx| {
2866 editor.set_style(self.style.clone(), cx);
2867
2868 let layout_id = match editor.mode {
2869 EditorMode::SingleLine => {
2870 let rem_size = cx.rem_size();
2871 let mut style = Style::default();
2872 style.size.width = relative(1.).into();
2873 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2874 cx.request_layout(&style, None)
2875 }
2876 EditorMode::AutoHeight { max_lines } => {
2877 let editor_handle = cx.view().clone();
2878 let max_line_number_width =
2879 self.max_line_number_width(&editor.snapshot(cx), cx);
2880 cx.request_measured_layout(
2881 Style::default(),
2882 move |known_dimensions, _, cx| {
2883 editor_handle
2884 .update(cx, |editor, cx| {
2885 compute_auto_height_layout(
2886 editor,
2887 max_lines,
2888 max_line_number_width,
2889 known_dimensions,
2890 cx,
2891 )
2892 })
2893 .unwrap_or_default()
2894 },
2895 )
2896 }
2897 EditorMode::Full => {
2898 let mut style = Style::default();
2899 style.size.width = relative(1.).into();
2900 style.size.height = relative(1.).into();
2901 cx.request_layout(&style, None)
2902 }
2903 };
2904
2905 (layout_id, ())
2906 })
2907 })
2908 }
2909
2910 fn paint(
2911 &mut self,
2912 bounds: Bounds<gpui::Pixels>,
2913 _element_state: &mut Self::State,
2914 cx: &mut gpui::WindowContext,
2915 ) {
2916 let editor = self.editor.clone();
2917
2918 cx.paint_view(self.editor.entity_id(), |cx| {
2919 cx.with_text_style(
2920 Some(gpui::TextStyleRefinement {
2921 font_size: Some(self.style.text.font_size),
2922 line_height: Some(self.style.text.line_height),
2923 ..Default::default()
2924 }),
2925 |cx| {
2926 let mut layout = self.compute_layout(bounds, cx);
2927 let gutter_bounds = Bounds {
2928 origin: bounds.origin,
2929 size: layout.gutter_size,
2930 };
2931 let text_bounds = Bounds {
2932 origin: gutter_bounds.upper_right(),
2933 size: layout.text_size,
2934 };
2935
2936 let focus_handle = editor.focus_handle(cx);
2937 let key_context = self.editor.read(cx).key_context(cx);
2938 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
2939 self.register_actions(cx);
2940 self.register_key_listeners(cx);
2941
2942 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2943 let input_handler =
2944 ElementInputHandler::new(bounds, self.editor.clone(), cx);
2945 cx.handle_input(&focus_handle, input_handler);
2946
2947 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2948 if layout.gutter_size.width > Pixels::ZERO {
2949 self.paint_gutter(gutter_bounds, &mut layout, cx);
2950 }
2951 self.paint_text(text_bounds, &mut layout, cx);
2952
2953 cx.with_z_index(0, |cx| {
2954 self.paint_mouse_listeners(
2955 bounds,
2956 gutter_bounds,
2957 text_bounds,
2958 &layout,
2959 cx,
2960 );
2961 });
2962 if !layout.blocks.is_empty() {
2963 cx.with_z_index(0, |cx| {
2964 cx.with_element_id(Some("editor_blocks"), |cx| {
2965 self.paint_blocks(bounds, &mut layout, cx);
2966 });
2967 })
2968 }
2969
2970 cx.with_z_index(1, |cx| {
2971 self.paint_overlays(text_bounds, &mut layout, cx);
2972 });
2973
2974 cx.with_z_index(2, |cx| self.paint_scrollbar(bounds, &mut layout, cx));
2975 });
2976 })
2977 },
2978 )
2979 })
2980 }
2981}
2982
2983impl IntoElement for EditorElement {
2984 type Element = Self;
2985
2986 fn element_id(&self) -> Option<gpui::ElementId> {
2987 self.editor.element_id()
2988 }
2989
2990 fn into_element(self) -> Self::Element {
2991 self
2992 }
2993}
2994
2995type BufferRow = u32;
2996
2997pub struct LayoutState {
2998 position_map: Arc<PositionMap>,
2999 gutter_size: Size<Pixels>,
3000 gutter_padding: Pixels,
3001 gutter_margin: Pixels,
3002 text_size: gpui::Size<Pixels>,
3003 mode: EditorMode,
3004 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3005 visible_anchor_range: Range<Anchor>,
3006 visible_display_row_range: Range<u32>,
3007 active_rows: BTreeMap<u32, bool>,
3008 highlighted_rows: Option<Range<u32>>,
3009 line_numbers: Vec<Option<ShapedLine>>,
3010 display_hunks: Vec<DisplayDiffHunk>,
3011 blocks: Vec<BlockLayout>,
3012 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3013 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3014 scrollbar_row_range: Range<f32>,
3015 show_scrollbars: bool,
3016 is_singleton: bool,
3017 max_row: u32,
3018 context_menu: Option<(DisplayPoint, AnyElement)>,
3019 code_actions_indicator: Option<CodeActionsIndicator>,
3020 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3021 fold_indicators: Vec<Option<IconButton>>,
3022 tab_invisible: ShapedLine,
3023 space_invisible: ShapedLine,
3024}
3025
3026struct CodeActionsIndicator {
3027 row: u32,
3028 button: IconButton,
3029}
3030
3031struct PositionMap {
3032 size: Size<Pixels>,
3033 line_height: Pixels,
3034 scroll_position: gpui::Point<Pixels>,
3035 scroll_max: gpui::Point<f32>,
3036 em_width: Pixels,
3037 em_advance: Pixels,
3038 line_layouts: Vec<LineWithInvisibles>,
3039 snapshot: EditorSnapshot,
3040}
3041
3042#[derive(Debug, Copy, Clone)]
3043pub struct PointForPosition {
3044 pub previous_valid: DisplayPoint,
3045 pub next_valid: DisplayPoint,
3046 pub exact_unclipped: DisplayPoint,
3047 pub column_overshoot_after_line_end: u32,
3048}
3049
3050impl PointForPosition {
3051 #[cfg(test)]
3052 pub fn valid(valid: DisplayPoint) -> Self {
3053 Self {
3054 previous_valid: valid,
3055 next_valid: valid,
3056 exact_unclipped: valid,
3057 column_overshoot_after_line_end: 0,
3058 }
3059 }
3060
3061 pub fn as_valid(&self) -> Option<DisplayPoint> {
3062 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3063 Some(self.previous_valid)
3064 } else {
3065 None
3066 }
3067 }
3068}
3069
3070impl PositionMap {
3071 fn point_for_position(
3072 &self,
3073 text_bounds: Bounds<Pixels>,
3074 position: gpui::Point<Pixels>,
3075 ) -> PointForPosition {
3076 let scroll_position = self.snapshot.scroll_position();
3077 let position = position - text_bounds.origin;
3078 let y = position.y.max(px(0.)).min(self.size.height);
3079 let x = position.x + (scroll_position.x * self.em_width);
3080 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3081
3082 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3083 .line_layouts
3084 .get(row as usize - scroll_position.y as usize)
3085 .map(|&LineWithInvisibles { ref line, .. }| line)
3086 {
3087 if let Some(ix) = line.index_for_x(x) {
3088 (ix as u32, px(0.))
3089 } else {
3090 (line.len as u32, px(0.).max(x - line.width))
3091 }
3092 } else {
3093 (0, x)
3094 };
3095
3096 let mut exact_unclipped = DisplayPoint::new(row, column);
3097 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3098 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3099
3100 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3101 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3102 PointForPosition {
3103 previous_valid,
3104 next_valid,
3105 exact_unclipped,
3106 column_overshoot_after_line_end,
3107 }
3108 }
3109}
3110
3111struct BlockLayout {
3112 row: u32,
3113 element: AnyElement,
3114 available_space: Size<AvailableSpace>,
3115 style: BlockStyle,
3116}
3117
3118fn layout_line(
3119 row: u32,
3120 snapshot: &EditorSnapshot,
3121 style: &EditorStyle,
3122 cx: &WindowContext,
3123) -> Result<ShapedLine> {
3124 let mut line = snapshot.line(row);
3125
3126 if line.len() > MAX_LINE_LEN {
3127 let mut len = MAX_LINE_LEN;
3128 while !line.is_char_boundary(len) {
3129 len -= 1;
3130 }
3131
3132 line.truncate(len);
3133 }
3134
3135 cx.text_system().shape_line(
3136 line.into(),
3137 style.text.font_size.to_pixels(cx.rem_size()),
3138 &[TextRun {
3139 len: snapshot.line_len(row) as usize,
3140 font: style.text.font(),
3141 color: Hsla::default(),
3142 background_color: None,
3143 underline: None,
3144 }],
3145 )
3146}
3147
3148#[derive(Debug)]
3149pub struct Cursor {
3150 origin: gpui::Point<Pixels>,
3151 block_width: Pixels,
3152 line_height: Pixels,
3153 color: Hsla,
3154 shape: CursorShape,
3155 block_text: Option<ShapedLine>,
3156 cursor_name: Option<CursorName>,
3157}
3158
3159#[derive(Debug)]
3160pub struct CursorName {
3161 string: SharedString,
3162 color: Hsla,
3163 is_top_row: bool,
3164 z_index: u8,
3165}
3166
3167impl Cursor {
3168 pub fn new(
3169 origin: gpui::Point<Pixels>,
3170 block_width: Pixels,
3171 line_height: Pixels,
3172 color: Hsla,
3173 shape: CursorShape,
3174 block_text: Option<ShapedLine>,
3175 cursor_name: Option<CursorName>,
3176 ) -> Cursor {
3177 Cursor {
3178 origin,
3179 block_width,
3180 line_height,
3181 color,
3182 shape,
3183 block_text,
3184 cursor_name,
3185 }
3186 }
3187
3188 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3189 Bounds {
3190 origin: self.origin + origin,
3191 size: size(self.block_width, self.line_height),
3192 }
3193 }
3194
3195 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3196 let bounds = match self.shape {
3197 CursorShape::Bar => Bounds {
3198 origin: self.origin + origin,
3199 size: size(px(2.0), self.line_height),
3200 },
3201 CursorShape::Block | CursorShape::Hollow => Bounds {
3202 origin: self.origin + origin,
3203 size: size(self.block_width, self.line_height),
3204 },
3205 CursorShape::Underscore => Bounds {
3206 origin: self.origin
3207 + origin
3208 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3209 size: size(self.block_width, px(2.0)),
3210 },
3211 };
3212
3213 //Draw background or border quad
3214 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3215 outline(bounds, self.color)
3216 } else {
3217 fill(bounds, self.color)
3218 };
3219
3220 if let Some(name) = &self.cursor_name {
3221 let text_size = self.line_height / 1.5;
3222
3223 let name_origin = if name.is_top_row {
3224 point(bounds.right() - px(1.), bounds.top())
3225 } else {
3226 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3227 };
3228 cx.with_z_index(name.z_index, |cx| {
3229 div()
3230 .bg(self.color)
3231 .text_size(text_size)
3232 .px_0p5()
3233 .line_height(text_size + px(2.))
3234 .text_color(name.color)
3235 .child(name.string.clone())
3236 .into_any_element()
3237 .draw(
3238 name_origin,
3239 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3240 cx,
3241 )
3242 })
3243 }
3244
3245 cx.paint_quad(cursor);
3246
3247 if let Some(block_text) = &self.block_text {
3248 block_text
3249 .paint(self.origin + origin, self.line_height, cx)
3250 .log_err();
3251 }
3252 }
3253
3254 pub fn shape(&self) -> CursorShape {
3255 self.shape
3256 }
3257}
3258
3259#[derive(Debug)]
3260pub struct HighlightedRange {
3261 pub start_y: Pixels,
3262 pub line_height: Pixels,
3263 pub lines: Vec<HighlightedRangeLine>,
3264 pub color: Hsla,
3265 pub corner_radius: Pixels,
3266}
3267
3268#[derive(Debug)]
3269pub struct HighlightedRangeLine {
3270 pub start_x: Pixels,
3271 pub end_x: Pixels,
3272}
3273
3274impl HighlightedRange {
3275 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3276 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3277 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3278 self.paint_lines(
3279 self.start_y + self.line_height,
3280 &self.lines[1..],
3281 bounds,
3282 cx,
3283 );
3284 } else {
3285 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3286 }
3287 }
3288
3289 fn paint_lines(
3290 &self,
3291 start_y: Pixels,
3292 lines: &[HighlightedRangeLine],
3293 _bounds: Bounds<Pixels>,
3294 cx: &mut WindowContext,
3295 ) {
3296 if lines.is_empty() {
3297 return;
3298 }
3299
3300 let first_line = lines.first().unwrap();
3301 let last_line = lines.last().unwrap();
3302
3303 let first_top_left = point(first_line.start_x, start_y);
3304 let first_top_right = point(first_line.end_x, start_y);
3305
3306 let curve_height = point(Pixels::ZERO, self.corner_radius);
3307 let curve_width = |start_x: Pixels, end_x: Pixels| {
3308 let max = (end_x - start_x) / 2.;
3309 let width = if max < self.corner_radius {
3310 max
3311 } else {
3312 self.corner_radius
3313 };
3314
3315 point(width, Pixels::ZERO)
3316 };
3317
3318 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3319 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3320 path.curve_to(first_top_right + curve_height, first_top_right);
3321
3322 let mut iter = lines.iter().enumerate().peekable();
3323 while let Some((ix, line)) = iter.next() {
3324 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3325
3326 if let Some((_, next_line)) = iter.peek() {
3327 let next_top_right = point(next_line.end_x, bottom_right.y);
3328
3329 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3330 Ordering::Equal => {
3331 path.line_to(bottom_right);
3332 }
3333 Ordering::Less => {
3334 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3335 path.line_to(bottom_right - curve_height);
3336 if self.corner_radius > Pixels::ZERO {
3337 path.curve_to(bottom_right - curve_width, bottom_right);
3338 }
3339 path.line_to(next_top_right + curve_width);
3340 if self.corner_radius > Pixels::ZERO {
3341 path.curve_to(next_top_right + curve_height, next_top_right);
3342 }
3343 }
3344 Ordering::Greater => {
3345 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3346 path.line_to(bottom_right - curve_height);
3347 if self.corner_radius > Pixels::ZERO {
3348 path.curve_to(bottom_right + curve_width, bottom_right);
3349 }
3350 path.line_to(next_top_right - curve_width);
3351 if self.corner_radius > Pixels::ZERO {
3352 path.curve_to(next_top_right + curve_height, next_top_right);
3353 }
3354 }
3355 }
3356 } else {
3357 let curve_width = curve_width(line.start_x, line.end_x);
3358 path.line_to(bottom_right - curve_height);
3359 if self.corner_radius > Pixels::ZERO {
3360 path.curve_to(bottom_right - curve_width, bottom_right);
3361 }
3362
3363 let bottom_left = point(line.start_x, bottom_right.y);
3364 path.line_to(bottom_left + curve_width);
3365 if self.corner_radius > Pixels::ZERO {
3366 path.curve_to(bottom_left - curve_height, bottom_left);
3367 }
3368 }
3369 }
3370
3371 if first_line.start_x > last_line.start_x {
3372 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3373 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3374 path.line_to(second_top_left + curve_height);
3375 if self.corner_radius > Pixels::ZERO {
3376 path.curve_to(second_top_left + curve_width, second_top_left);
3377 }
3378 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3379 path.line_to(first_bottom_left - curve_width);
3380 if self.corner_radius > Pixels::ZERO {
3381 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3382 }
3383 }
3384
3385 path.line_to(first_top_left + curve_height);
3386 if self.corner_radius > Pixels::ZERO {
3387 path.curve_to(first_top_left + top_curve_width, first_top_left);
3388 }
3389 path.line_to(first_top_right - top_curve_width);
3390
3391 cx.paint_path(path, self.color);
3392 }
3393}
3394
3395pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3396 (delta.pow(1.5) / 100.0).into()
3397}
3398
3399fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3400 (delta.pow(1.2) / 300.0).into()
3401}
3402
3403#[cfg(test)]
3404mod tests {
3405 use super::*;
3406 use crate::{
3407 display_map::{BlockDisposition, BlockProperties},
3408 editor_tests::{init_test, update_test_language_settings},
3409 Editor, MultiBuffer,
3410 };
3411 use gpui::TestAppContext;
3412 use language::language_settings;
3413 use log::info;
3414 use std::{num::NonZeroU32, sync::Arc};
3415 use util::test::sample_text;
3416
3417 #[gpui::test]
3418 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3419 init_test(cx, |_| {});
3420 let window = cx.add_window(|cx| {
3421 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3422 Editor::new(EditorMode::Full, buffer, None, cx)
3423 });
3424
3425 let editor = window.root(cx).unwrap();
3426 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3427 let element = EditorElement::new(&editor, style);
3428
3429 let layouts = window
3430 .update(cx, |editor, cx| {
3431 let snapshot = editor.snapshot(cx);
3432 element
3433 .shape_line_numbers(
3434 0..6,
3435 &Default::default(),
3436 DisplayPoint::new(0, 0),
3437 false,
3438 &snapshot,
3439 cx,
3440 )
3441 .0
3442 })
3443 .unwrap();
3444 assert_eq!(layouts.len(), 6);
3445
3446 let relative_rows = window
3447 .update(cx, |editor, cx| {
3448 let snapshot = editor.snapshot(cx);
3449 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3450 })
3451 .unwrap();
3452 assert_eq!(relative_rows[&0], 3);
3453 assert_eq!(relative_rows[&1], 2);
3454 assert_eq!(relative_rows[&2], 1);
3455 // current line has no relative number
3456 assert_eq!(relative_rows[&4], 1);
3457 assert_eq!(relative_rows[&5], 2);
3458
3459 // works if cursor is before screen
3460 let relative_rows = window
3461 .update(cx, |editor, cx| {
3462 let snapshot = editor.snapshot(cx);
3463
3464 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3465 })
3466 .unwrap();
3467 assert_eq!(relative_rows.len(), 3);
3468 assert_eq!(relative_rows[&3], 2);
3469 assert_eq!(relative_rows[&4], 3);
3470 assert_eq!(relative_rows[&5], 4);
3471
3472 // works if cursor is after screen
3473 let relative_rows = window
3474 .update(cx, |editor, cx| {
3475 let snapshot = editor.snapshot(cx);
3476
3477 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3478 })
3479 .unwrap();
3480 assert_eq!(relative_rows.len(), 3);
3481 assert_eq!(relative_rows[&0], 5);
3482 assert_eq!(relative_rows[&1], 4);
3483 assert_eq!(relative_rows[&2], 3);
3484 }
3485
3486 #[gpui::test]
3487 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3488 init_test(cx, |_| {});
3489
3490 let window = cx.add_window(|cx| {
3491 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3492 Editor::new(EditorMode::Full, buffer, None, cx)
3493 });
3494 let editor = window.root(cx).unwrap();
3495 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3496 let mut element = EditorElement::new(&editor, style);
3497
3498 window
3499 .update(cx, |editor, cx| {
3500 editor.cursor_shape = CursorShape::Block;
3501 editor.change_selections(None, cx, |s| {
3502 s.select_ranges([
3503 Point::new(0, 0)..Point::new(1, 0),
3504 Point::new(3, 2)..Point::new(3, 3),
3505 Point::new(5, 6)..Point::new(6, 0),
3506 ]);
3507 });
3508 })
3509 .unwrap();
3510 let state = cx
3511 .update_window(window.into(), |view, cx| {
3512 cx.with_view_id(view.entity_id(), |cx| {
3513 element.compute_layout(
3514 Bounds {
3515 origin: point(px(500.), px(500.)),
3516 size: size(px(500.), px(500.)),
3517 },
3518 cx,
3519 )
3520 })
3521 })
3522 .unwrap();
3523
3524 assert_eq!(state.selections.len(), 1);
3525 let local_selections = &state.selections[0].1;
3526 assert_eq!(local_selections.len(), 3);
3527 // moves cursor back one line
3528 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3529 assert_eq!(
3530 local_selections[0].range,
3531 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3532 );
3533
3534 // moves cursor back one column
3535 assert_eq!(
3536 local_selections[1].range,
3537 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3538 );
3539 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3540
3541 // leaves cursor on the max point
3542 assert_eq!(
3543 local_selections[2].range,
3544 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3545 );
3546 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3547
3548 // active lines does not include 1 (even though the range of the selection does)
3549 assert_eq!(
3550 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3551 vec![0, 3, 5, 6]
3552 );
3553
3554 // multi-buffer support
3555 // in DisplayPoint co-ordinates, this is what we're dealing with:
3556 // 0: [[file
3557 // 1: header]]
3558 // 2: aaaaaa
3559 // 3: bbbbbb
3560 // 4: cccccc
3561 // 5:
3562 // 6: ...
3563 // 7: ffffff
3564 // 8: gggggg
3565 // 9: hhhhhh
3566 // 10:
3567 // 11: [[file
3568 // 12: header]]
3569 // 13: bbbbbb
3570 // 14: cccccc
3571 // 15: dddddd
3572 let window = cx.add_window(|cx| {
3573 let buffer = MultiBuffer::build_multi(
3574 [
3575 (
3576 &(sample_text(8, 6, 'a') + "\n"),
3577 vec![
3578 Point::new(0, 0)..Point::new(3, 0),
3579 Point::new(4, 0)..Point::new(7, 0),
3580 ],
3581 ),
3582 (
3583 &(sample_text(8, 6, 'a') + "\n"),
3584 vec![Point::new(1, 0)..Point::new(3, 0)],
3585 ),
3586 ],
3587 cx,
3588 );
3589 Editor::new(EditorMode::Full, buffer, None, cx)
3590 });
3591 let editor = window.root(cx).unwrap();
3592 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3593 let mut element = EditorElement::new(&editor, style);
3594 let _state = window.update(cx, |editor, cx| {
3595 editor.cursor_shape = CursorShape::Block;
3596 editor.change_selections(None, cx, |s| {
3597 s.select_display_ranges([
3598 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3599 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3600 ]);
3601 });
3602 });
3603
3604 let state = cx
3605 .update_window(window.into(), |view, cx| {
3606 cx.with_view_id(view.entity_id(), |cx| {
3607 element.compute_layout(
3608 Bounds {
3609 origin: point(px(500.), px(500.)),
3610 size: size(px(500.), px(500.)),
3611 },
3612 cx,
3613 )
3614 })
3615 })
3616 .unwrap();
3617 assert_eq!(state.selections.len(), 1);
3618 let local_selections = &state.selections[0].1;
3619 assert_eq!(local_selections.len(), 2);
3620
3621 // moves cursor on excerpt boundary back a line
3622 // and doesn't allow selection to bleed through
3623 assert_eq!(
3624 local_selections[0].range,
3625 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3626 );
3627 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3628 // moves cursor on buffer boundary back two lines
3629 // and doesn't allow selection to bleed through
3630 assert_eq!(
3631 local_selections[1].range,
3632 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3633 );
3634 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3635 }
3636
3637 #[gpui::test]
3638 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3639 init_test(cx, |_| {});
3640
3641 let window = cx.add_window(|cx| {
3642 let buffer = MultiBuffer::build_simple("", cx);
3643 Editor::new(EditorMode::Full, buffer, None, cx)
3644 });
3645 let editor = window.root(cx).unwrap();
3646 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3647 window
3648 .update(cx, |editor, cx| {
3649 editor.set_placeholder_text("hello", cx);
3650 editor.insert_blocks(
3651 [BlockProperties {
3652 style: BlockStyle::Fixed,
3653 disposition: BlockDisposition::Above,
3654 height: 3,
3655 position: Anchor::min(),
3656 render: Arc::new(|_| div().into_any()),
3657 }],
3658 None,
3659 cx,
3660 );
3661
3662 // Blur the editor so that it displays placeholder text.
3663 cx.blur();
3664 })
3665 .unwrap();
3666
3667 let mut element = EditorElement::new(&editor, style);
3668 let state = cx
3669 .update_window(window.into(), |view, cx| {
3670 cx.with_view_id(view.entity_id(), |cx| {
3671 element.compute_layout(
3672 Bounds {
3673 origin: point(px(500.), px(500.)),
3674 size: size(px(500.), px(500.)),
3675 },
3676 cx,
3677 )
3678 })
3679 })
3680 .unwrap();
3681 let size = state.position_map.size;
3682
3683 assert_eq!(state.position_map.line_layouts.len(), 4);
3684 assert_eq!(
3685 state
3686 .line_numbers
3687 .iter()
3688 .map(Option::is_some)
3689 .collect::<Vec<_>>(),
3690 &[false, false, false, true]
3691 );
3692
3693 // Don't panic.
3694 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3695 cx.update_window(window.into(), |_, cx| element.paint(bounds, &mut (), cx))
3696 .unwrap()
3697 }
3698
3699 #[gpui::test]
3700 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3701 const TAB_SIZE: u32 = 4;
3702
3703 let input_text = "\t \t|\t| a b";
3704 let expected_invisibles = vec![
3705 Invisible::Tab {
3706 line_start_offset: 0,
3707 },
3708 Invisible::Whitespace {
3709 line_offset: TAB_SIZE as usize,
3710 },
3711 Invisible::Tab {
3712 line_start_offset: TAB_SIZE as usize + 1,
3713 },
3714 Invisible::Tab {
3715 line_start_offset: TAB_SIZE as usize * 2 + 1,
3716 },
3717 Invisible::Whitespace {
3718 line_offset: TAB_SIZE as usize * 3 + 1,
3719 },
3720 Invisible::Whitespace {
3721 line_offset: TAB_SIZE as usize * 3 + 3,
3722 },
3723 ];
3724 assert_eq!(
3725 expected_invisibles.len(),
3726 input_text
3727 .chars()
3728 .filter(|initial_char| initial_char.is_whitespace())
3729 .count(),
3730 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3731 );
3732
3733 init_test(cx, |s| {
3734 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3735 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3736 });
3737
3738 let actual_invisibles =
3739 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3740
3741 assert_eq!(expected_invisibles, actual_invisibles);
3742 }
3743
3744 #[gpui::test]
3745 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3746 init_test(cx, |s| {
3747 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3748 s.defaults.tab_size = NonZeroU32::new(4);
3749 });
3750
3751 for editor_mode_without_invisibles in [
3752 EditorMode::SingleLine,
3753 EditorMode::AutoHeight { max_lines: 100 },
3754 ] {
3755 let invisibles = collect_invisibles_from_new_editor(
3756 cx,
3757 editor_mode_without_invisibles,
3758 "\t\t\t| | a b",
3759 px(500.0),
3760 );
3761 assert!(invisibles.is_empty(),
3762 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3763 }
3764 }
3765
3766 #[gpui::test]
3767 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3768 let tab_size = 4;
3769 let input_text = "a\tbcd ".repeat(9);
3770 let repeated_invisibles = [
3771 Invisible::Tab {
3772 line_start_offset: 1,
3773 },
3774 Invisible::Whitespace {
3775 line_offset: tab_size as usize + 3,
3776 },
3777 Invisible::Whitespace {
3778 line_offset: tab_size as usize + 4,
3779 },
3780 Invisible::Whitespace {
3781 line_offset: tab_size as usize + 5,
3782 },
3783 ];
3784 let expected_invisibles = std::iter::once(repeated_invisibles)
3785 .cycle()
3786 .take(9)
3787 .flatten()
3788 .collect::<Vec<_>>();
3789 assert_eq!(
3790 expected_invisibles.len(),
3791 input_text
3792 .chars()
3793 .filter(|initial_char| initial_char.is_whitespace())
3794 .count(),
3795 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3796 );
3797 info!("Expected invisibles: {expected_invisibles:?}");
3798
3799 init_test(cx, |_| {});
3800
3801 // Put the same string with repeating whitespace pattern into editors of various size,
3802 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3803 let resize_step = 10.0;
3804 let mut editor_width = 200.0;
3805 while editor_width <= 1000.0 {
3806 update_test_language_settings(cx, |s| {
3807 s.defaults.tab_size = NonZeroU32::new(tab_size);
3808 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3809 s.defaults.preferred_line_length = Some(editor_width as u32);
3810 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3811 });
3812
3813 let actual_invisibles = collect_invisibles_from_new_editor(
3814 cx,
3815 EditorMode::Full,
3816 &input_text,
3817 px(editor_width),
3818 );
3819
3820 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3821 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3822 let mut i = 0;
3823 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3824 i = actual_index;
3825 match expected_invisibles.get(i) {
3826 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3827 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3828 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3829 _ => {
3830 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3831 }
3832 },
3833 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3834 }
3835 }
3836 let missing_expected_invisibles = &expected_invisibles[i + 1..];
3837 assert!(
3838 missing_expected_invisibles.is_empty(),
3839 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3840 );
3841
3842 editor_width += resize_step;
3843 }
3844 }
3845
3846 fn collect_invisibles_from_new_editor(
3847 cx: &mut TestAppContext,
3848 editor_mode: EditorMode,
3849 input_text: &str,
3850 editor_width: Pixels,
3851 ) -> Vec<Invisible> {
3852 info!(
3853 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
3854 editor_width.0
3855 );
3856 let window = cx.add_window(|cx| {
3857 let buffer = MultiBuffer::build_simple(&input_text, cx);
3858 Editor::new(editor_mode, buffer, None, cx)
3859 });
3860 let editor = window.root(cx).unwrap();
3861 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3862 let mut element = EditorElement::new(&editor, style);
3863 window
3864 .update(cx, |editor, cx| {
3865 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3866 editor.set_wrap_width(Some(editor_width), cx);
3867 })
3868 .unwrap();
3869 let layout_state = cx
3870 .update_window(window.into(), |_, cx| {
3871 element.compute_layout(
3872 Bounds {
3873 origin: point(px(500.), px(500.)),
3874 size: size(px(500.), px(500.)),
3875 },
3876 cx,
3877 )
3878 })
3879 .unwrap();
3880
3881 layout_state
3882 .position_map
3883 .line_layouts
3884 .iter()
3885 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3886 .flatten()
3887 .cloned()
3888 .collect()
3889 }
3890}
3891
3892pub fn register_action<T: Action>(
3893 view: &View<Editor>,
3894 cx: &mut WindowContext,
3895 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
3896) {
3897 let view = view.clone();
3898 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
3899 let action = action.downcast_ref().unwrap();
3900 if phase == DispatchPhase::Bubble {
3901 view.update(cx, |editor, cx| {
3902 listener(editor, action, cx);
3903 })
3904 }
3905 })
3906}
3907
3908fn compute_auto_height_layout(
3909 editor: &mut Editor,
3910 max_lines: usize,
3911 max_line_number_width: Pixels,
3912 known_dimensions: Size<Option<Pixels>>,
3913 cx: &mut ViewContext<Editor>,
3914) -> Option<Size<Pixels>> {
3915 let width = known_dimensions.width?;
3916 if let Some(height) = known_dimensions.height {
3917 return Some(size(width, height));
3918 }
3919
3920 let style = editor.style.as_ref().unwrap();
3921 let font_id = cx.text_system().resolve_font(&style.text.font());
3922 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3923 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3924 let em_width = cx
3925 .text_system()
3926 .typographic_bounds(font_id, font_size, 'm')
3927 .unwrap()
3928 .size
3929 .width;
3930
3931 let mut snapshot = editor.snapshot(cx);
3932 let gutter_width;
3933 let gutter_margin;
3934 if snapshot.show_gutter {
3935 let descent = cx.text_system().descent(font_id, font_size);
3936 let gutter_padding_factor = 3.5;
3937 let gutter_padding = (em_width * gutter_padding_factor).round();
3938 gutter_width = max_line_number_width + gutter_padding * 2.0;
3939 gutter_margin = -descent;
3940 } else {
3941 gutter_width = Pixels::ZERO;
3942 gutter_margin = Pixels::ZERO;
3943 };
3944
3945 editor.gutter_width = gutter_width;
3946 let text_width = width - gutter_width;
3947 let overscroll = size(em_width, px(0.));
3948
3949 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
3950 if editor.set_wrap_width(Some(editor_width), cx) {
3951 snapshot = editor.snapshot(cx);
3952 }
3953
3954 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
3955 let height = scroll_height
3956 .max(line_height)
3957 .min(line_height * max_lines as f32);
3958
3959 Some(size(width, height))
3960}