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, Bounds, ContentMask, Corners, CursorStyle,
29 DispatchPhase, Edges, Element, ElementInputHandler, Entity, Hsla, InteractiveBounds,
30 InteractiveElement, IntoElement, ModifiersChangedEvent, MouseButton, MouseDownEvent,
31 MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine,
32 SharedString, Size, StackingOrder, StatefulInteractiveElement, Style, Styled, TextRun,
33 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 register_action(view, cx, Editor::display_cursor_names);
331 }
332
333 fn register_key_listeners(&self, cx: &mut ElementContext) {
334 cx.on_key_event({
335 let editor = self.editor.clone();
336 move |event: &ModifiersChangedEvent, phase, cx| {
337 if phase != DispatchPhase::Bubble {
338 return;
339 }
340
341 if editor.update(cx, |editor, cx| Self::modifiers_changed(editor, event, cx)) {
342 cx.stop_propagation();
343 }
344 }
345 });
346 }
347
348 pub(crate) fn modifiers_changed(
349 editor: &mut Editor,
350 event: &ModifiersChangedEvent,
351 cx: &mut ViewContext<Editor>,
352 ) -> bool {
353 let pending_selection = editor.has_pending_selection();
354
355 if let Some(point) = &editor.link_go_to_definition_state.last_trigger_point {
356 if event.command && !pending_selection {
357 let point = point.clone();
358 let snapshot = editor.snapshot(cx);
359 let kind = point.definition_kind(event.shift);
360
361 show_link_definition(kind, editor, point, snapshot, cx);
362 return false;
363 }
364 }
365
366 {
367 if editor.link_go_to_definition_state.symbol_range.is_some()
368 || !editor.link_go_to_definition_state.definitions.is_empty()
369 {
370 editor.link_go_to_definition_state.symbol_range.take();
371 editor.link_go_to_definition_state.definitions.clear();
372 cx.notify();
373 }
374
375 editor.link_go_to_definition_state.task = None;
376
377 editor.clear_highlights::<LinkGoToDefinitionState>(cx);
378 }
379
380 false
381 }
382
383 fn mouse_left_down(
384 editor: &mut Editor,
385 event: &MouseDownEvent,
386 position_map: &PositionMap,
387 text_bounds: Bounds<Pixels>,
388 gutter_bounds: Bounds<Pixels>,
389 stacking_order: &StackingOrder,
390 cx: &mut ViewContext<Editor>,
391 ) {
392 let mut click_count = event.click_count;
393 let modifiers = event.modifiers;
394
395 if cx.default_prevented() {
396 return;
397 } else if gutter_bounds.contains(&event.position) {
398 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
399 } else if !text_bounds.contains(&event.position) {
400 return;
401 }
402 if !cx.was_top_layer(&event.position, stacking_order) {
403 return;
404 }
405
406 let point_for_position = position_map.point_for_position(text_bounds, event.position);
407 let position = point_for_position.previous_valid;
408 if modifiers.shift && modifiers.alt {
409 editor.select(
410 SelectPhase::BeginColumnar {
411 position,
412 goal_column: point_for_position.exact_unclipped.column(),
413 },
414 cx,
415 );
416 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
417 editor.select(
418 SelectPhase::Extend {
419 position,
420 click_count,
421 },
422 cx,
423 );
424 } else {
425 editor.select(
426 SelectPhase::Begin {
427 position,
428 add: modifiers.alt,
429 click_count,
430 },
431 cx,
432 );
433 }
434
435 cx.stop_propagation();
436 }
437
438 fn mouse_right_down(
439 editor: &mut Editor,
440 event: &MouseDownEvent,
441 position_map: &PositionMap,
442 text_bounds: Bounds<Pixels>,
443 cx: &mut ViewContext<Editor>,
444 ) {
445 if !text_bounds.contains(&event.position) {
446 return;
447 }
448 let point_for_position = position_map.point_for_position(text_bounds, event.position);
449 mouse_context_menu::deploy_context_menu(
450 editor,
451 event.position,
452 point_for_position.previous_valid,
453 cx,
454 );
455 cx.stop_propagation();
456 }
457
458 fn mouse_up(
459 editor: &mut Editor,
460 event: &MouseUpEvent,
461 position_map: &PositionMap,
462 text_bounds: Bounds<Pixels>,
463 interactive_bounds: &InteractiveBounds,
464 stacking_order: &StackingOrder,
465 cx: &mut ViewContext<Editor>,
466 ) {
467 let end_selection = editor.has_pending_selection();
468 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
469
470 if end_selection {
471 editor.select(SelectPhase::End, cx);
472 }
473
474 if interactive_bounds.visibly_contains(&event.position, cx)
475 && !pending_nonempty_selections
476 && event.modifiers.command
477 && text_bounds.contains(&event.position)
478 && cx.was_top_layer(&event.position, stacking_order)
479 {
480 let point = position_map.point_for_position(text_bounds, event.position);
481 let could_be_inlay = point.as_valid().is_none();
482 let split = event.modifiers.alt;
483 if event.modifiers.shift || could_be_inlay {
484 go_to_fetched_type_definition(editor, point, split, cx);
485 } else {
486 go_to_fetched_definition(editor, point, split, cx);
487 }
488
489 cx.stop_propagation();
490 } else if end_selection {
491 cx.stop_propagation();
492 }
493 }
494
495 fn mouse_dragged(
496 editor: &mut Editor,
497 event: &MouseMoveEvent,
498 position_map: &PositionMap,
499 text_bounds: Bounds<Pixels>,
500 _gutter_bounds: Bounds<Pixels>,
501 _stacking_order: &StackingOrder,
502 cx: &mut ViewContext<Editor>,
503 ) {
504 if !editor.has_pending_selection() {
505 return;
506 }
507
508 let point_for_position = position_map.point_for_position(text_bounds, event.position);
509 let mut scroll_delta = gpui::Point::<f32>::default();
510 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
511 let top = text_bounds.origin.y + vertical_margin;
512 let bottom = text_bounds.lower_left().y - vertical_margin;
513 if event.position.y < top {
514 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
515 }
516 if event.position.y > bottom {
517 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
518 }
519
520 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
521 let left = text_bounds.origin.x + horizontal_margin;
522 let right = text_bounds.upper_right().x - horizontal_margin;
523 if event.position.x < left {
524 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
525 }
526 if event.position.x > right {
527 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
528 }
529
530 editor.select(
531 SelectPhase::Update {
532 position: point_for_position.previous_valid,
533 goal_column: point_for_position.exact_unclipped.column(),
534 scroll_delta,
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 ElementContext,
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 ElementContext,
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 ElementContext) {
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 ElementContext,
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 ElementContext,
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 if cx.was_top_layer(&popover_origin, cx.stacking_order()) {
1221 cx.break_content_mask(|cx| {
1222 hover_popover.draw(popover_origin, available_space, cx)
1223 });
1224 }
1225
1226 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1227 }
1228 } else {
1229 // There is not enough space above. Render popovers below the hovered point
1230 let mut current_y = hovered_point.y + layout.position_map.line_height;
1231 for mut hover_popover in hover_popovers {
1232 let size = hover_popover.measure(available_space, cx);
1233 let mut popover_origin = point(hovered_point.x, current_y);
1234
1235 let x_out_of_bounds =
1236 text_bounds.upper_right().x - (popover_origin.x + size.width);
1237 if x_out_of_bounds < Pixels::ZERO {
1238 popover_origin.x = popover_origin.x + x_out_of_bounds;
1239 }
1240
1241 hover_popover.draw(popover_origin, available_space, cx);
1242
1243 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1244 }
1245 }
1246 }
1247
1248 if let Some(mouse_context_menu) = self.editor.read(cx).mouse_context_menu.as_ref() {
1249 let element = overlay()
1250 .position(mouse_context_menu.position)
1251 .child(mouse_context_menu.context_menu.clone())
1252 .anchor(AnchorCorner::TopLeft)
1253 .snap_to_window();
1254 element.into_any().draw(
1255 gpui::Point::default(),
1256 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1257 cx,
1258 );
1259 }
1260 }
1261
1262 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1263 bounds.upper_right().x - self.style.scrollbar_width
1264 }
1265
1266 fn paint_scrollbar(
1267 &mut self,
1268 bounds: Bounds<Pixels>,
1269 layout: &mut LayoutState,
1270 cx: &mut ElementContext,
1271 ) {
1272 if layout.mode != EditorMode::Full {
1273 return;
1274 }
1275
1276 // If a drag took place after we started dragging the scrollbar,
1277 // cancel the scrollbar drag.
1278 if cx.has_active_drag() {
1279 self.editor.update(cx, |editor, cx| {
1280 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1281 });
1282 }
1283
1284 let top = bounds.origin.y;
1285 let bottom = bounds.lower_left().y;
1286 let right = bounds.lower_right().x;
1287 let left = self.scrollbar_left(&bounds);
1288 let row_range = layout.scrollbar_row_range.clone();
1289 let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1290
1291 let mut height = bounds.size.height;
1292 let mut first_row_y_offset = px(0.0);
1293
1294 // Impose a minimum height on the scrollbar thumb
1295 let row_height = height / max_row;
1296 let min_thumb_height = layout.position_map.line_height;
1297 let thumb_height = (row_range.end - row_range.start) * row_height;
1298 if thumb_height < min_thumb_height {
1299 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1300 height -= min_thumb_height - thumb_height;
1301 }
1302
1303 let y_for_row = |row: f32| -> Pixels { top + first_row_y_offset + row * row_height };
1304
1305 let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1306 let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1307 let track_bounds = Bounds::from_corners(point(left, top), point(right, bottom));
1308 let thumb_bounds = Bounds::from_corners(point(left, thumb_top), point(right, thumb_bottom));
1309
1310 if layout.show_scrollbars {
1311 cx.paint_quad(quad(
1312 track_bounds,
1313 Corners::default(),
1314 cx.theme().colors().scrollbar_track_background,
1315 Edges {
1316 top: Pixels::ZERO,
1317 right: Pixels::ZERO,
1318 bottom: Pixels::ZERO,
1319 left: px(1.),
1320 },
1321 cx.theme().colors().scrollbar_track_border,
1322 ));
1323 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1324 if layout.is_singleton && scrollbar_settings.selections {
1325 let start_anchor = Anchor::min();
1326 let end_anchor = Anchor::max();
1327 let background_ranges = self
1328 .editor
1329 .read(cx)
1330 .background_highlight_row_ranges::<BufferSearchHighlights>(
1331 start_anchor..end_anchor,
1332 &layout.position_map.snapshot,
1333 50000,
1334 );
1335 for range in background_ranges {
1336 let start_y = y_for_row(range.start().row() as f32);
1337 let mut end_y = y_for_row(range.end().row() as f32);
1338 if end_y - start_y < px(1.) {
1339 end_y = start_y + px(1.);
1340 }
1341 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1342 cx.paint_quad(quad(
1343 bounds,
1344 Corners::default(),
1345 cx.theme().status().info,
1346 Edges {
1347 top: Pixels::ZERO,
1348 right: px(1.),
1349 bottom: Pixels::ZERO,
1350 left: px(1.),
1351 },
1352 cx.theme().colors().scrollbar_thumb_border,
1353 ));
1354 }
1355 }
1356
1357 if layout.is_singleton && scrollbar_settings.git_diff {
1358 for hunk in layout
1359 .position_map
1360 .snapshot
1361 .buffer_snapshot
1362 .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1363 {
1364 let start_display = Point::new(hunk.buffer_range.start, 0)
1365 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1366 let end_display = Point::new(hunk.buffer_range.end, 0)
1367 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1368 let start_y = y_for_row(start_display.row() as f32);
1369 let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1370 y_for_row((end_display.row() + 1) as f32)
1371 } else {
1372 y_for_row((end_display.row()) as f32)
1373 };
1374
1375 if end_y - start_y < px(1.) {
1376 end_y = start_y + px(1.);
1377 }
1378 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1379
1380 let color = match hunk.status() {
1381 DiffHunkStatus::Added => cx.theme().status().created,
1382 DiffHunkStatus::Modified => cx.theme().status().modified,
1383 DiffHunkStatus::Removed => cx.theme().status().deleted,
1384 };
1385 cx.paint_quad(quad(
1386 bounds,
1387 Corners::default(),
1388 color,
1389 Edges {
1390 top: Pixels::ZERO,
1391 right: px(1.),
1392 bottom: Pixels::ZERO,
1393 left: px(1.),
1394 },
1395 cx.theme().colors().scrollbar_thumb_border,
1396 ));
1397 }
1398 }
1399
1400 cx.paint_quad(quad(
1401 thumb_bounds,
1402 Corners::default(),
1403 cx.theme().colors().scrollbar_thumb_background,
1404 Edges {
1405 top: Pixels::ZERO,
1406 right: px(1.),
1407 bottom: Pixels::ZERO,
1408 left: px(1.),
1409 },
1410 cx.theme().colors().scrollbar_thumb_border,
1411 ));
1412 }
1413
1414 let interactive_track_bounds = InteractiveBounds {
1415 bounds: track_bounds,
1416 stacking_order: cx.stacking_order().clone(),
1417 };
1418 let mut mouse_position = cx.mouse_position();
1419 if interactive_track_bounds.visibly_contains(&mouse_position, cx) {
1420 cx.set_cursor_style(CursorStyle::Arrow);
1421 }
1422
1423 cx.on_mouse_event({
1424 let editor = self.editor.clone();
1425 move |event: &MouseMoveEvent, phase, cx| {
1426 if phase == DispatchPhase::Capture {
1427 return;
1428 }
1429
1430 editor.update(cx, |editor, cx| {
1431 if event.pressed_button == Some(MouseButton::Left)
1432 && editor.scroll_manager.is_dragging_scrollbar()
1433 {
1434 let y = mouse_position.y;
1435 let new_y = event.position.y;
1436 if (track_bounds.top()..track_bounds.bottom()).contains(&y) {
1437 let mut position = editor.scroll_position(cx);
1438 position.y += (new_y - y) * (max_row as f32) / height;
1439 if position.y < 0.0 {
1440 position.y = 0.0;
1441 }
1442 editor.set_scroll_position(position, cx);
1443 }
1444
1445 mouse_position = event.position;
1446 cx.stop_propagation();
1447 } else {
1448 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1449 if interactive_track_bounds.visibly_contains(&event.position, cx) {
1450 editor.scroll_manager.show_scrollbar(cx);
1451 }
1452 }
1453 })
1454 }
1455 });
1456
1457 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
1458 cx.on_mouse_event({
1459 let editor = self.editor.clone();
1460 move |_: &MouseUpEvent, phase, cx| {
1461 if phase == DispatchPhase::Capture {
1462 return;
1463 }
1464
1465 editor.update(cx, |editor, cx| {
1466 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1467 cx.stop_propagation();
1468 });
1469 }
1470 });
1471 } else {
1472 cx.on_mouse_event({
1473 let editor = self.editor.clone();
1474 move |event: &MouseDownEvent, phase, cx| {
1475 if phase == DispatchPhase::Capture {
1476 return;
1477 }
1478
1479 editor.update(cx, |editor, cx| {
1480 if track_bounds.contains(&event.position) {
1481 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
1482
1483 let y = event.position.y;
1484 if y < thumb_top || thumb_bottom < y {
1485 let center_row =
1486 ((y - top) * max_row as f32 / height).round() as u32;
1487 let top_row = center_row
1488 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1489 let mut position = editor.scroll_position(cx);
1490 position.y = top_row as f32;
1491 editor.set_scroll_position(position, cx);
1492 } else {
1493 editor.scroll_manager.show_scrollbar(cx);
1494 }
1495
1496 cx.stop_propagation();
1497 }
1498 });
1499 }
1500 });
1501 }
1502 }
1503
1504 #[allow(clippy::too_many_arguments)]
1505 fn paint_highlighted_range(
1506 &self,
1507 range: Range<DisplayPoint>,
1508 color: Hsla,
1509 corner_radius: Pixels,
1510 line_end_overshoot: Pixels,
1511 layout: &LayoutState,
1512 content_origin: gpui::Point<Pixels>,
1513 bounds: Bounds<Pixels>,
1514 cx: &mut ElementContext,
1515 ) {
1516 let start_row = layout.visible_display_row_range.start;
1517 let end_row = layout.visible_display_row_range.end;
1518 if range.start != range.end {
1519 let row_range = if range.end.column() == 0 {
1520 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1521 } else {
1522 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1523 };
1524
1525 let highlighted_range = HighlightedRange {
1526 color,
1527 line_height: layout.position_map.line_height,
1528 corner_radius,
1529 start_y: content_origin.y
1530 + row_range.start as f32 * layout.position_map.line_height
1531 - layout.position_map.scroll_position.y,
1532 lines: row_range
1533 .into_iter()
1534 .map(|row| {
1535 let line_layout =
1536 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1537 HighlightedRangeLine {
1538 start_x: if row == range.start.row() {
1539 content_origin.x
1540 + line_layout.x_for_index(range.start.column() as usize)
1541 - layout.position_map.scroll_position.x
1542 } else {
1543 content_origin.x - layout.position_map.scroll_position.x
1544 },
1545 end_x: if row == range.end.row() {
1546 content_origin.x
1547 + line_layout.x_for_index(range.end.column() as usize)
1548 - layout.position_map.scroll_position.x
1549 } else {
1550 content_origin.x + line_layout.width + line_end_overshoot
1551 - layout.position_map.scroll_position.x
1552 },
1553 }
1554 })
1555 .collect(),
1556 };
1557
1558 highlighted_range.paint(bounds, cx);
1559 }
1560 }
1561
1562 fn paint_blocks(
1563 &mut self,
1564 bounds: Bounds<Pixels>,
1565 layout: &mut LayoutState,
1566 cx: &mut ElementContext,
1567 ) {
1568 let scroll_position = layout.position_map.snapshot.scroll_position();
1569 let scroll_left = scroll_position.x * layout.position_map.em_width;
1570 let scroll_top = scroll_position.y * layout.position_map.line_height;
1571
1572 for mut block in layout.blocks.drain(..) {
1573 let mut origin = bounds.origin
1574 + point(
1575 Pixels::ZERO,
1576 block.row as f32 * layout.position_map.line_height - scroll_top,
1577 );
1578 if !matches!(block.style, BlockStyle::Sticky) {
1579 origin += point(-scroll_left, Pixels::ZERO);
1580 }
1581 block.element.draw(origin, block.available_space, cx);
1582 }
1583 }
1584
1585 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1586 let style = &self.style;
1587 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1588 let layout = cx
1589 .text_system()
1590 .shape_line(
1591 SharedString::from(" ".repeat(column)),
1592 font_size,
1593 &[TextRun {
1594 len: column,
1595 font: style.text.font(),
1596 color: Hsla::default(),
1597 background_color: None,
1598 underline: None,
1599 }],
1600 )
1601 .unwrap();
1602
1603 layout.width
1604 }
1605
1606 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1607 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1608 self.column_pixels(digit_count, cx)
1609 }
1610
1611 //Folds contained in a hunk are ignored apart from shrinking visual size
1612 //If a fold contains any hunks then that fold line is marked as modified
1613 fn layout_git_gutters(
1614 &self,
1615 display_rows: Range<u32>,
1616 snapshot: &EditorSnapshot,
1617 ) -> Vec<DisplayDiffHunk> {
1618 let buffer_snapshot = &snapshot.buffer_snapshot;
1619
1620 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1621 .to_point(snapshot)
1622 .row;
1623 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1624 .to_point(snapshot)
1625 .row;
1626
1627 buffer_snapshot
1628 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1629 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1630 .dedup()
1631 .collect()
1632 }
1633
1634 fn calculate_relative_line_numbers(
1635 &self,
1636 snapshot: &EditorSnapshot,
1637 rows: &Range<u32>,
1638 relative_to: Option<u32>,
1639 ) -> HashMap<u32, u32> {
1640 let mut relative_rows: HashMap<u32, u32> = Default::default();
1641 let Some(relative_to) = relative_to else {
1642 return relative_rows;
1643 };
1644
1645 let start = rows.start.min(relative_to);
1646 let end = rows.end.max(relative_to);
1647
1648 let buffer_rows = snapshot
1649 .buffer_rows(start)
1650 .take(1 + (end - start) as usize)
1651 .collect::<Vec<_>>();
1652
1653 let head_idx = relative_to - start;
1654 let mut delta = 1;
1655 let mut i = head_idx + 1;
1656 while i < buffer_rows.len() as u32 {
1657 if buffer_rows[i as usize].is_some() {
1658 if rows.contains(&(i + start)) {
1659 relative_rows.insert(i + start, delta);
1660 }
1661 delta += 1;
1662 }
1663 i += 1;
1664 }
1665 delta = 1;
1666 i = head_idx.min(buffer_rows.len() as u32 - 1);
1667 while i > 0 && buffer_rows[i as usize].is_none() {
1668 i -= 1;
1669 }
1670
1671 while i > 0 {
1672 i -= 1;
1673 if buffer_rows[i as usize].is_some() {
1674 if rows.contains(&(i + start)) {
1675 relative_rows.insert(i + start, delta);
1676 }
1677 delta += 1;
1678 }
1679 }
1680
1681 relative_rows
1682 }
1683
1684 fn shape_line_numbers(
1685 &self,
1686 rows: Range<u32>,
1687 active_rows: &BTreeMap<u32, bool>,
1688 newest_selection_head: DisplayPoint,
1689 is_singleton: bool,
1690 snapshot: &EditorSnapshot,
1691 cx: &ViewContext<Editor>,
1692 ) -> (
1693 Vec<Option<ShapedLine>>,
1694 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1695 ) {
1696 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1697 let include_line_numbers = snapshot.mode == EditorMode::Full;
1698 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1699 let mut fold_statuses = Vec::with_capacity(rows.len());
1700 let mut line_number = String::new();
1701 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1702 let relative_to = if is_relative {
1703 Some(newest_selection_head.row())
1704 } else {
1705 None
1706 };
1707
1708 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1709
1710 for (ix, row) in snapshot
1711 .buffer_rows(rows.start)
1712 .take((rows.end - rows.start) as usize)
1713 .enumerate()
1714 {
1715 let display_row = rows.start + ix as u32;
1716 let (active, color) = if active_rows.contains_key(&display_row) {
1717 (true, cx.theme().colors().editor_active_line_number)
1718 } else {
1719 (false, cx.theme().colors().editor_line_number)
1720 };
1721 if let Some(buffer_row) = row {
1722 if include_line_numbers {
1723 line_number.clear();
1724 let default_number = buffer_row + 1;
1725 let number = relative_rows
1726 .get(&(ix as u32 + rows.start))
1727 .unwrap_or(&default_number);
1728 write!(&mut line_number, "{}", number).unwrap();
1729 let run = TextRun {
1730 len: line_number.len(),
1731 font: self.style.text.font(),
1732 color,
1733 background_color: None,
1734 underline: None,
1735 };
1736 let shaped_line = cx
1737 .text_system()
1738 .shape_line(line_number.clone().into(), font_size, &[run])
1739 .unwrap();
1740 shaped_line_numbers.push(Some(shaped_line));
1741 fold_statuses.push(
1742 is_singleton
1743 .then(|| {
1744 snapshot
1745 .fold_for_line(buffer_row)
1746 .map(|fold_status| (fold_status, buffer_row, active))
1747 })
1748 .flatten(),
1749 )
1750 }
1751 } else {
1752 fold_statuses.push(None);
1753 shaped_line_numbers.push(None);
1754 }
1755 }
1756
1757 (shaped_line_numbers, fold_statuses)
1758 }
1759
1760 fn layout_lines(
1761 &self,
1762 rows: Range<u32>,
1763 line_number_layouts: &[Option<ShapedLine>],
1764 snapshot: &EditorSnapshot,
1765 cx: &ViewContext<Editor>,
1766 ) -> Vec<LineWithInvisibles> {
1767 if rows.start >= rows.end {
1768 return Vec::new();
1769 }
1770
1771 // Show the placeholder when the editor is empty
1772 if snapshot.is_empty() {
1773 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1774 let placeholder_color = cx.theme().colors().text_placeholder;
1775 let placeholder_text = snapshot.placeholder_text();
1776
1777 let placeholder_lines = placeholder_text
1778 .as_ref()
1779 .map_or("", AsRef::as_ref)
1780 .split('\n')
1781 .skip(rows.start as usize)
1782 .chain(iter::repeat(""))
1783 .take(rows.len());
1784 placeholder_lines
1785 .filter_map(move |line| {
1786 let run = TextRun {
1787 len: line.len(),
1788 font: self.style.text.font(),
1789 color: placeholder_color,
1790 background_color: None,
1791 underline: Default::default(),
1792 };
1793 cx.text_system()
1794 .shape_line(line.to_string().into(), font_size, &[run])
1795 .log_err()
1796 })
1797 .map(|line| LineWithInvisibles {
1798 line,
1799 invisibles: Vec::new(),
1800 })
1801 .collect()
1802 } else {
1803 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1804 LineWithInvisibles::from_chunks(
1805 chunks,
1806 &self.style.text,
1807 MAX_LINE_LEN,
1808 rows.len() as usize,
1809 line_number_layouts,
1810 snapshot.mode,
1811 cx,
1812 )
1813 }
1814 }
1815
1816 fn compute_layout(&mut self, bounds: Bounds<Pixels>, cx: &mut ElementContext) -> LayoutState {
1817 self.editor.update(cx, |editor, cx| {
1818 let snapshot = editor.snapshot(cx);
1819 let style = self.style.clone();
1820
1821 let font_id = cx.text_system().resolve_font(&style.text.font());
1822 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1823 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1824 let em_width = cx
1825 .text_system()
1826 .typographic_bounds(font_id, font_size, 'm')
1827 .unwrap()
1828 .size
1829 .width;
1830 let em_advance = cx
1831 .text_system()
1832 .advance(font_id, font_size, 'm')
1833 .unwrap()
1834 .width;
1835
1836 let gutter_dimensions = snapshot.gutter_dimensions(font_id, font_size, em_width, self.max_line_number_width(&snapshot, cx), cx);
1837
1838 editor.gutter_width = gutter_dimensions.width;
1839
1840 let text_width = bounds.size.width - gutter_dimensions.width;
1841 let overscroll = size(em_width, px(0.));
1842 let _snapshot = {
1843 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1844
1845 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
1846 let wrap_width = match editor.soft_wrap_mode(cx) {
1847 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1848 SoftWrap::EditorWidth => editor_width,
1849 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1850 };
1851
1852 if editor.set_wrap_width(Some(wrap_width), cx) {
1853 editor.snapshot(cx)
1854 } else {
1855 snapshot
1856 }
1857 };
1858
1859 let wrap_guides = editor
1860 .wrap_guides(cx)
1861 .iter()
1862 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1863 .collect::<SmallVec<[_; 2]>>();
1864
1865 let gutter_size = size(gutter_dimensions.width, bounds.size.height);
1866 let text_size = size(text_width, bounds.size.height);
1867
1868 let autoscroll_horizontally =
1869 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1870 let mut snapshot = editor.snapshot(cx);
1871
1872 let scroll_position = snapshot.scroll_position();
1873 // The scroll position is a fractional point, the whole number of which represents
1874 // the top of the window in terms of display rows.
1875 let start_row = scroll_position.y as u32;
1876 let height_in_lines = f32::from(bounds.size.height / line_height);
1877 let max_row = snapshot.max_point().row();
1878
1879 // Add 1 to ensure selections bleed off screen
1880 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1881
1882 let start_anchor = if start_row == 0 {
1883 Anchor::min()
1884 } else {
1885 snapshot
1886 .buffer_snapshot
1887 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1888 };
1889 let end_anchor = if end_row > max_row {
1890 Anchor::max()
1891 } else {
1892 snapshot
1893 .buffer_snapshot
1894 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1895 };
1896
1897 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1898 let mut active_rows = BTreeMap::new();
1899 let is_singleton = editor.is_singleton(cx);
1900
1901 let highlighted_rows = editor.highlighted_rows();
1902 let highlighted_ranges = editor.background_highlights_in_range(
1903 start_anchor..end_anchor,
1904 &snapshot.display_snapshot,
1905 cx.theme().colors(),
1906 );
1907
1908 let mut newest_selection_head = None;
1909
1910 if editor.show_local_selections {
1911 let mut local_selections: Vec<Selection<Point>> = editor
1912 .selections
1913 .disjoint_in_range(start_anchor..end_anchor, cx);
1914 local_selections.extend(editor.selections.pending(cx));
1915 let mut layouts = Vec::new();
1916 let newest = editor.selections.newest(cx);
1917 for selection in local_selections.drain(..) {
1918 let is_empty = selection.start == selection.end;
1919 let is_newest = selection == newest;
1920
1921 let layout = SelectionLayout::new(
1922 selection,
1923 editor.selections.line_mode,
1924 editor.cursor_shape,
1925 &snapshot.display_snapshot,
1926 is_newest,
1927 true,
1928 None,
1929 );
1930 if is_newest {
1931 newest_selection_head = Some(layout.head);
1932 }
1933
1934 for row in cmp::max(layout.active_rows.start, start_row)
1935 ..=cmp::min(layout.active_rows.end, end_row)
1936 {
1937 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1938 *contains_non_empty_selection |= !is_empty;
1939 }
1940 layouts.push(layout);
1941 }
1942
1943 let player = if editor.read_only(cx) {
1944 cx.theme().players().read_only()
1945 } else {
1946 style.local_player
1947 };
1948
1949 selections.push((player, layouts));
1950 }
1951
1952 if let Some(collaboration_hub) = &editor.collaboration_hub {
1953 // When following someone, render the local selections in their color.
1954 if let Some(leader_id) = editor.leader_peer_id {
1955 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1956 if let Some(participant_index) = collaboration_hub
1957 .user_participant_indices(cx)
1958 .get(&collaborator.user_id)
1959 {
1960 if let Some((local_selection_style, _)) = selections.first_mut() {
1961 *local_selection_style = cx
1962 .theme()
1963 .players()
1964 .color_for_participant(participant_index.0);
1965 }
1966 }
1967 }
1968 }
1969
1970 let mut remote_selections = HashMap::default();
1971 for selection in snapshot.remote_selections_in_range(
1972 &(start_anchor..end_anchor),
1973 collaboration_hub.as_ref(),
1974 cx,
1975 ) {
1976 let selection_style = if let Some(participant_index) = selection.participant_index {
1977 cx.theme()
1978 .players()
1979 .color_for_participant(participant_index.0)
1980 } else {
1981 cx.theme().players().absent()
1982 };
1983
1984 // Don't re-render the leader's selections, since the local selections
1985 // match theirs.
1986 if Some(selection.peer_id) == editor.leader_peer_id {
1987 continue;
1988 }
1989 let is_shown = editor.show_cursor_names || editor.hovered_cursor.as_ref().is_some_and(|c| c.replica_id == selection.replica_id && c.selection_id == selection.selection.id);
1990
1991 remote_selections
1992 .entry(selection.replica_id)
1993 .or_insert((selection_style, Vec::new()))
1994 .1
1995 .push(SelectionLayout::new(
1996 selection.selection,
1997 selection.line_mode,
1998 selection.cursor_shape,
1999 &snapshot.display_snapshot,
2000 false,
2001 false,
2002 if is_shown {
2003 selection.user_name
2004 } else {
2005 None
2006 },
2007 ));
2008 }
2009
2010 selections.extend(remote_selections.into_values());
2011 }
2012
2013 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2014 let show_scrollbars = match scrollbar_settings.show {
2015 ShowScrollbar::Auto => {
2016 // Git
2017 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2018 ||
2019 // Selections
2020 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
2021 // Scrollmanager
2022 || editor.scroll_manager.scrollbars_visible()
2023 }
2024 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2025 ShowScrollbar::Always => true,
2026 ShowScrollbar::Never => false,
2027 };
2028
2029 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2030 let newest = editor.selections.newest::<Point>(cx);
2031 SelectionLayout::new(
2032 newest,
2033 editor.selections.line_mode,
2034 editor.cursor_shape,
2035 &snapshot.display_snapshot,
2036 true,
2037 true,
2038 None,
2039 )
2040 .head
2041 });
2042
2043 let (line_numbers, fold_statuses) = self.shape_line_numbers(
2044 start_row..end_row,
2045 &active_rows,
2046 head_for_relative,
2047 is_singleton,
2048 &snapshot,
2049 cx,
2050 );
2051
2052 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2053
2054 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2055
2056 let mut max_visible_line_width = Pixels::ZERO;
2057 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
2058 for line_with_invisibles in &line_layouts {
2059 if line_with_invisibles.line.width > max_visible_line_width {
2060 max_visible_line_width = line_with_invisibles.line.width;
2061 }
2062 }
2063
2064 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
2065 .unwrap()
2066 .width;
2067 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
2068
2069 let editor_view = cx.view().clone();
2070 let (scroll_width, blocks) = cx.with_element_context(|cx| {
2071 cx.with_element_id(Some("editor_blocks"), |cx| {
2072 self.layout_blocks(
2073 start_row..end_row,
2074 &snapshot,
2075 bounds.size.width,
2076 scroll_width,
2077 gutter_dimensions.padding,
2078 gutter_dimensions.width,
2079 em_width,
2080 gutter_dimensions.width + gutter_dimensions.margin,
2081 line_height,
2082 &style,
2083 &line_layouts,
2084 editor,
2085 editor_view,
2086 cx,
2087 )
2088 })
2089 });
2090
2091 let scroll_max = point(
2092 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
2093 max_row as f32,
2094 );
2095
2096 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2097
2098 let autoscrolled = if autoscroll_horizontally {
2099 editor.autoscroll_horizontally(
2100 start_row,
2101 text_size.width,
2102 scroll_width,
2103 em_width,
2104 &line_layouts,
2105 cx,
2106 )
2107 } else {
2108 false
2109 };
2110
2111 if clamped || autoscrolled {
2112 snapshot = editor.snapshot(cx);
2113 }
2114
2115 let mut context_menu = None;
2116 let mut code_actions_indicator = None;
2117 if let Some(newest_selection_head) = newest_selection_head {
2118 if (start_row..end_row).contains(&newest_selection_head.row()) {
2119 if editor.context_menu_visible() {
2120 let max_height = cmp::min(
2121 12. * line_height,
2122 cmp::max(
2123 3. * line_height,
2124 (bounds.size.height - line_height) / 2.,
2125 )
2126 );
2127 context_menu =
2128 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2129 }
2130
2131 let active = matches!(
2132 editor.context_menu.read().as_ref(),
2133 Some(crate::ContextMenu::CodeActions(_))
2134 );
2135
2136 code_actions_indicator = editor
2137 .render_code_actions_indicator(&style, active, cx)
2138 .map(|element| CodeActionsIndicator {
2139 row: newest_selection_head.row(),
2140 button: element,
2141 });
2142 }
2143 }
2144
2145 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2146 let max_size = size(
2147 (120. * em_width) // Default size
2148 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2149 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2150 (16. * line_height) // Default size
2151 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2152 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2153 );
2154
2155 let hover = if context_menu.is_some() {
2156 None
2157 } else {
2158 editor.hover_state.render(
2159 &snapshot,
2160 &style,
2161 visible_rows,
2162 max_size,
2163 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2164 cx,
2165 )
2166 };
2167
2168 let editor_view = cx.view().clone();
2169 let fold_indicators = cx.with_element_context(|cx| {
2170
2171 cx.with_element_id(Some("gutter_fold_indicators"), |_cx| {
2172 editor.render_fold_indicators(
2173 fold_statuses,
2174 &style,
2175 editor.gutter_hovered,
2176 line_height,
2177 gutter_dimensions.margin,
2178 editor_view,
2179 )
2180 })
2181 });
2182
2183 let invisible_symbol_font_size = font_size / 2.;
2184 let tab_invisible = cx
2185 .text_system()
2186 .shape_line(
2187 "→".into(),
2188 invisible_symbol_font_size,
2189 &[TextRun {
2190 len: "→".len(),
2191 font: self.style.text.font(),
2192 color: cx.theme().colors().editor_invisible,
2193 background_color: None,
2194 underline: None,
2195 }],
2196 )
2197 .unwrap();
2198 let space_invisible = cx
2199 .text_system()
2200 .shape_line(
2201 "•".into(),
2202 invisible_symbol_font_size,
2203 &[TextRun {
2204 len: "•".len(),
2205 font: self.style.text.font(),
2206 color: cx.theme().colors().editor_invisible,
2207 background_color: None,
2208 underline: None,
2209 }],
2210 )
2211 .unwrap();
2212
2213 LayoutState {
2214 mode: snapshot.mode,
2215 position_map: Arc::new(PositionMap {
2216 size: bounds.size,
2217 scroll_position: point(
2218 scroll_position.x * em_width,
2219 scroll_position.y * line_height,
2220 ),
2221 scroll_max,
2222 line_layouts,
2223 line_height,
2224 em_width,
2225 em_advance,
2226 snapshot,
2227 }),
2228 visible_anchor_range: start_anchor..end_anchor,
2229 visible_display_row_range: start_row..end_row,
2230 wrap_guides,
2231 gutter_size,
2232 gutter_padding: gutter_dimensions.padding,
2233 text_size,
2234 scrollbar_row_range,
2235 show_scrollbars,
2236 is_singleton,
2237 max_row,
2238 gutter_margin: gutter_dimensions.margin,
2239 active_rows,
2240 highlighted_rows,
2241 highlighted_ranges,
2242 line_numbers,
2243 display_hunks,
2244 blocks,
2245 selections,
2246 context_menu,
2247 code_actions_indicator,
2248 fold_indicators,
2249 tab_invisible,
2250 space_invisible,
2251 hover_popovers: hover,
2252 }
2253 })
2254 }
2255
2256 #[allow(clippy::too_many_arguments)]
2257 fn layout_blocks(
2258 &self,
2259 rows: Range<u32>,
2260 snapshot: &EditorSnapshot,
2261 editor_width: Pixels,
2262 scroll_width: Pixels,
2263 gutter_padding: Pixels,
2264 gutter_width: Pixels,
2265 em_width: Pixels,
2266 text_x: Pixels,
2267 line_height: Pixels,
2268 style: &EditorStyle,
2269 line_layouts: &[LineWithInvisibles],
2270 editor: &mut Editor,
2271 editor_view: View<Editor>,
2272 cx: &mut ElementContext,
2273 ) -> (Pixels, Vec<BlockLayout>) {
2274 let mut block_id = 0;
2275 let (fixed_blocks, non_fixed_blocks) = snapshot
2276 .blocks_in_range(rows.clone())
2277 .partition::<Vec<_>, _>(|(_, block)| match block {
2278 TransformBlock::ExcerptHeader { .. } => false,
2279 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2280 });
2281
2282 let render_block = |block: &TransformBlock,
2283 available_space: Size<AvailableSpace>,
2284 block_id: usize,
2285 editor: &mut Editor,
2286 cx: &mut ElementContext| {
2287 let mut element = match block {
2288 TransformBlock::Custom(block) => {
2289 let align_to = block
2290 .position()
2291 .to_point(&snapshot.buffer_snapshot)
2292 .to_display_point(snapshot);
2293 let anchor_x = text_x
2294 + if rows.contains(&align_to.row()) {
2295 line_layouts[(align_to.row() - rows.start) as usize]
2296 .line
2297 .x_for_index(align_to.column() as usize)
2298 } else {
2299 layout_line(align_to.row(), snapshot, style, cx)
2300 .unwrap()
2301 .x_for_index(align_to.column() as usize)
2302 };
2303
2304 block.render(&mut BlockContext {
2305 context: cx,
2306 anchor_x,
2307 gutter_padding,
2308 line_height,
2309 gutter_width,
2310 em_width,
2311 block_id,
2312 view: editor_view.clone(),
2313 editor_style: &self.style,
2314 })
2315 }
2316
2317 TransformBlock::ExcerptHeader {
2318 buffer,
2319 range,
2320 starts_new_buffer,
2321 ..
2322 } => {
2323 let include_root = editor
2324 .project
2325 .as_ref()
2326 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2327 .unwrap_or_default();
2328
2329 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2330 let jump_path = ProjectPath {
2331 worktree_id: file.worktree_id(cx),
2332 path: file.path.clone(),
2333 };
2334 let jump_anchor = range
2335 .primary
2336 .as_ref()
2337 .map_or(range.context.start, |primary| primary.start);
2338 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2339
2340 cx.listener_for(&self.editor, move |editor, _, cx| {
2341 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2342 })
2343 });
2344
2345 let element = if *starts_new_buffer {
2346 let path = buffer.resolve_file_path(cx, include_root);
2347 let mut filename = None;
2348 let mut parent_path = None;
2349 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2350 if let Some(path) = path {
2351 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2352 parent_path = path
2353 .parent()
2354 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2355 }
2356
2357 v_flex()
2358 .id(("path header container", block_id))
2359 .size_full()
2360 .justify_center()
2361 .p(gpui::px(6.))
2362 .child(
2363 h_flex()
2364 .id("path header block")
2365 .size_full()
2366 .pl(gpui::px(12.))
2367 .pr(gpui::px(8.))
2368 .rounded_md()
2369 .shadow_md()
2370 .border()
2371 .border_color(cx.theme().colors().border)
2372 .bg(cx.theme().colors().editor_subheader_background)
2373 .justify_between()
2374 .hover(|style| style.bg(cx.theme().colors().element_hover))
2375 .child(
2376 h_flex().gap_3().child(
2377 h_flex()
2378 .gap_2()
2379 .child(
2380 filename
2381 .map(SharedString::from)
2382 .unwrap_or_else(|| "untitled".into()),
2383 )
2384 .when_some(parent_path, |then, path| {
2385 then.child(
2386 div().child(path).text_color(
2387 cx.theme().colors().text_muted,
2388 ),
2389 )
2390 }),
2391 ),
2392 )
2393 .when_some(jump_handler, |this, jump_handler| {
2394 this.cursor_pointer()
2395 .tooltip(|cx| {
2396 Tooltip::for_action(
2397 "Jump to Buffer",
2398 &OpenExcerpts,
2399 cx,
2400 )
2401 })
2402 .on_mouse_down(MouseButton::Left, |_, cx| {
2403 cx.stop_propagation()
2404 })
2405 .on_click(jump_handler)
2406 }),
2407 )
2408 } else {
2409 h_flex()
2410 .id(("collapsed context", block_id))
2411 .size_full()
2412 .gap(gutter_padding)
2413 .child(
2414 h_flex()
2415 .justify_end()
2416 .flex_none()
2417 .w(gutter_width - gutter_padding)
2418 .h_full()
2419 .text_buffer(cx)
2420 .text_color(cx.theme().colors().editor_line_number)
2421 .child("..."),
2422 )
2423 .child(
2424 ButtonLike::new("jump to collapsed context")
2425 .style(ButtonStyle::Transparent)
2426 .full_width()
2427 .child(
2428 div()
2429 .h_px()
2430 .w_full()
2431 .bg(cx.theme().colors().border_variant)
2432 .group_hover("", |style| {
2433 style.bg(cx.theme().colors().border)
2434 }),
2435 )
2436 .when_some(jump_handler, |this, jump_handler| {
2437 this.on_click(jump_handler).tooltip(|cx| {
2438 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2439 })
2440 }),
2441 )
2442 };
2443 element.into_any()
2444 }
2445 };
2446
2447 let size = element.measure(available_space, cx);
2448 (element, size)
2449 };
2450
2451 let mut fixed_block_max_width = Pixels::ZERO;
2452 let mut blocks = Vec::new();
2453 for (row, block) in fixed_blocks {
2454 let available_space = size(
2455 AvailableSpace::MinContent,
2456 AvailableSpace::Definite(block.height() as f32 * line_height),
2457 );
2458 let (element, element_size) =
2459 render_block(block, available_space, block_id, editor, cx);
2460 block_id += 1;
2461 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2462 blocks.push(BlockLayout {
2463 row,
2464 element,
2465 available_space,
2466 style: BlockStyle::Fixed,
2467 });
2468 }
2469 for (row, block) in non_fixed_blocks {
2470 let style = match block {
2471 TransformBlock::Custom(block) => block.style(),
2472 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2473 };
2474 let width = match style {
2475 BlockStyle::Sticky => editor_width,
2476 BlockStyle::Flex => editor_width
2477 .max(fixed_block_max_width)
2478 .max(gutter_width + scroll_width),
2479 BlockStyle::Fixed => unreachable!(),
2480 };
2481 let available_space = size(
2482 AvailableSpace::Definite(width),
2483 AvailableSpace::Definite(block.height() as f32 * line_height),
2484 );
2485 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2486 block_id += 1;
2487 blocks.push(BlockLayout {
2488 row,
2489 element,
2490 available_space,
2491 style,
2492 });
2493 }
2494 (
2495 scroll_width.max(fixed_block_max_width - gutter_width),
2496 blocks,
2497 )
2498 }
2499
2500 fn paint_scroll_wheel_listener(
2501 &mut self,
2502 interactive_bounds: &InteractiveBounds,
2503 layout: &LayoutState,
2504 cx: &mut ElementContext,
2505 ) {
2506 cx.on_mouse_event({
2507 let position_map = layout.position_map.clone();
2508 let editor = self.editor.clone();
2509 let interactive_bounds = interactive_bounds.clone();
2510 let mut delta = ScrollDelta::default();
2511
2512 move |event: &ScrollWheelEvent, phase, cx| {
2513 if phase == DispatchPhase::Bubble
2514 && interactive_bounds.visibly_contains(&event.position, cx)
2515 {
2516 delta = delta.coalesce(event.delta);
2517 editor.update(cx, |editor, cx| {
2518 let position = event.position;
2519 let position_map: &PositionMap = &position_map;
2520 let bounds = &interactive_bounds;
2521 if !bounds.visibly_contains(&position, cx) {
2522 return;
2523 }
2524
2525 let line_height = position_map.line_height;
2526 let max_glyph_width = position_map.em_width;
2527 let (delta, axis) = match delta {
2528 gpui::ScrollDelta::Pixels(mut pixels) => {
2529 //Trackpad
2530 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2531 (pixels, axis)
2532 }
2533
2534 gpui::ScrollDelta::Lines(lines) => {
2535 //Not trackpad
2536 let pixels =
2537 point(lines.x * max_glyph_width, lines.y * line_height);
2538 (pixels, None)
2539 }
2540 };
2541
2542 let scroll_position = position_map.snapshot.scroll_position();
2543 let x = f32::from(
2544 (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width,
2545 );
2546 let y =
2547 f32::from((scroll_position.y * line_height - delta.y) / line_height);
2548 let scroll_position =
2549 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2550 editor.scroll(scroll_position, axis, cx);
2551 cx.stop_propagation();
2552 });
2553 }
2554 }
2555 });
2556 }
2557
2558 fn paint_mouse_listeners(
2559 &mut self,
2560 bounds: Bounds<Pixels>,
2561 gutter_bounds: Bounds<Pixels>,
2562 text_bounds: Bounds<Pixels>,
2563 layout: &LayoutState,
2564 cx: &mut ElementContext,
2565 ) {
2566 let interactive_bounds = InteractiveBounds {
2567 bounds: bounds.intersect(&cx.content_mask().bounds),
2568 stacking_order: cx.stacking_order().clone(),
2569 };
2570
2571 self.paint_scroll_wheel_listener(&interactive_bounds, layout, cx);
2572
2573 cx.on_mouse_event({
2574 let position_map = layout.position_map.clone();
2575 let editor = self.editor.clone();
2576 let stacking_order = cx.stacking_order().clone();
2577 let interactive_bounds = interactive_bounds.clone();
2578
2579 move |event: &MouseDownEvent, phase, cx| {
2580 if phase == DispatchPhase::Bubble
2581 && interactive_bounds.visibly_contains(&event.position, cx)
2582 {
2583 match event.button {
2584 MouseButton::Left => editor.update(cx, |editor, cx| {
2585 Self::mouse_left_down(
2586 editor,
2587 event,
2588 &position_map,
2589 text_bounds,
2590 gutter_bounds,
2591 &stacking_order,
2592 cx,
2593 );
2594 }),
2595 MouseButton::Right => editor.update(cx, |editor, cx| {
2596 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx);
2597 }),
2598 _ => {}
2599 };
2600 }
2601 }
2602 });
2603
2604 cx.on_mouse_event({
2605 let position_map = layout.position_map.clone();
2606 let editor = self.editor.clone();
2607 let stacking_order = cx.stacking_order().clone();
2608 let interactive_bounds = interactive_bounds.clone();
2609
2610 move |event: &MouseUpEvent, phase, cx| {
2611 if phase == DispatchPhase::Bubble {
2612 editor.update(cx, |editor, cx| {
2613 Self::mouse_up(
2614 editor,
2615 event,
2616 &position_map,
2617 text_bounds,
2618 &interactive_bounds,
2619 &stacking_order,
2620 cx,
2621 )
2622 });
2623 }
2624 }
2625 });
2626 cx.on_mouse_event({
2627 let position_map = layout.position_map.clone();
2628 let editor = self.editor.clone();
2629 let stacking_order = cx.stacking_order().clone();
2630
2631 move |event: &MouseMoveEvent, phase, cx| {
2632 // if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
2633
2634 if phase == DispatchPhase::Bubble {
2635 editor.update(cx, |editor, cx| {
2636 if event.pressed_button == Some(MouseButton::Left) {
2637 Self::mouse_dragged(
2638 editor,
2639 event,
2640 &position_map,
2641 text_bounds,
2642 gutter_bounds,
2643 &stacking_order,
2644 cx,
2645 )
2646 }
2647
2648 if interactive_bounds.visibly_contains(&event.position, cx) {
2649 Self::mouse_moved(
2650 editor,
2651 event,
2652 &position_map,
2653 text_bounds,
2654 gutter_bounds,
2655 &stacking_order,
2656 cx,
2657 )
2658 }
2659 });
2660 }
2661 }
2662 });
2663 }
2664}
2665
2666#[derive(Debug)]
2667pub(crate) struct LineWithInvisibles {
2668 pub line: ShapedLine,
2669 invisibles: Vec<Invisible>,
2670}
2671
2672impl LineWithInvisibles {
2673 fn from_chunks<'a>(
2674 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2675 text_style: &TextStyle,
2676 max_line_len: usize,
2677 max_line_count: usize,
2678 line_number_layouts: &[Option<ShapedLine>],
2679 editor_mode: EditorMode,
2680 cx: &WindowContext,
2681 ) -> Vec<Self> {
2682 let mut layouts = Vec::with_capacity(max_line_count);
2683 let mut line = String::new();
2684 let mut invisibles = Vec::new();
2685 let mut styles = Vec::new();
2686 let mut non_whitespace_added = false;
2687 let mut row = 0;
2688 let mut line_exceeded_max_len = false;
2689 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2690
2691 for highlighted_chunk in chunks.chain([HighlightedChunk {
2692 chunk: "\n",
2693 style: None,
2694 is_tab: false,
2695 }]) {
2696 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2697 if ix > 0 {
2698 let shaped_line = cx
2699 .text_system()
2700 .shape_line(line.clone().into(), font_size, &styles)
2701 .unwrap();
2702 layouts.push(Self {
2703 line: shaped_line,
2704 invisibles: invisibles.drain(..).collect(),
2705 });
2706
2707 line.clear();
2708 styles.clear();
2709 row += 1;
2710 line_exceeded_max_len = false;
2711 non_whitespace_added = false;
2712 if row == max_line_count {
2713 return layouts;
2714 }
2715 }
2716
2717 if !line_chunk.is_empty() && !line_exceeded_max_len {
2718 let text_style = if let Some(style) = highlighted_chunk.style {
2719 Cow::Owned(text_style.clone().highlight(style))
2720 } else {
2721 Cow::Borrowed(text_style)
2722 };
2723
2724 if line.len() + line_chunk.len() > max_line_len {
2725 let mut chunk_len = max_line_len - line.len();
2726 while !line_chunk.is_char_boundary(chunk_len) {
2727 chunk_len -= 1;
2728 }
2729 line_chunk = &line_chunk[..chunk_len];
2730 line_exceeded_max_len = true;
2731 }
2732
2733 styles.push(TextRun {
2734 len: line_chunk.len(),
2735 font: text_style.font(),
2736 color: text_style.color,
2737 background_color: text_style.background_color,
2738 underline: text_style.underline,
2739 });
2740
2741 if editor_mode == EditorMode::Full {
2742 // Line wrap pads its contents with fake whitespaces,
2743 // avoid printing them
2744 let inside_wrapped_string = line_number_layouts
2745 .get(row)
2746 .and_then(|layout| layout.as_ref())
2747 .is_none();
2748 if highlighted_chunk.is_tab {
2749 if non_whitespace_added || !inside_wrapped_string {
2750 invisibles.push(Invisible::Tab {
2751 line_start_offset: line.len(),
2752 });
2753 }
2754 } else {
2755 invisibles.extend(
2756 line_chunk
2757 .chars()
2758 .enumerate()
2759 .filter(|(_, line_char)| {
2760 let is_whitespace = line_char.is_whitespace();
2761 non_whitespace_added |= !is_whitespace;
2762 is_whitespace
2763 && (non_whitespace_added || !inside_wrapped_string)
2764 })
2765 .map(|(whitespace_index, _)| Invisible::Whitespace {
2766 line_offset: line.len() + whitespace_index,
2767 }),
2768 )
2769 }
2770 }
2771
2772 line.push_str(line_chunk);
2773 }
2774 }
2775 }
2776
2777 layouts
2778 }
2779
2780 fn draw(
2781 &self,
2782 layout: &LayoutState,
2783 row: u32,
2784 content_origin: gpui::Point<Pixels>,
2785 whitespace_setting: ShowWhitespaceSetting,
2786 selection_ranges: &[Range<DisplayPoint>],
2787 cx: &mut ElementContext,
2788 ) {
2789 let line_height = layout.position_map.line_height;
2790 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2791
2792 self.line
2793 .paint(
2794 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2795 line_height,
2796 cx,
2797 )
2798 .log_err();
2799
2800 self.draw_invisibles(
2801 &selection_ranges,
2802 layout,
2803 content_origin,
2804 line_y,
2805 row,
2806 line_height,
2807 whitespace_setting,
2808 cx,
2809 );
2810 }
2811
2812 fn draw_invisibles(
2813 &self,
2814 selection_ranges: &[Range<DisplayPoint>],
2815 layout: &LayoutState,
2816 content_origin: gpui::Point<Pixels>,
2817 line_y: Pixels,
2818 row: u32,
2819 line_height: Pixels,
2820 whitespace_setting: ShowWhitespaceSetting,
2821 cx: &mut ElementContext,
2822 ) {
2823 let allowed_invisibles_regions = match whitespace_setting {
2824 ShowWhitespaceSetting::None => return,
2825 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2826 ShowWhitespaceSetting::All => None,
2827 };
2828
2829 for invisible in &self.invisibles {
2830 let (&token_offset, invisible_symbol) = match invisible {
2831 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2832 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2833 };
2834
2835 let x_offset = self.line.x_for_index(token_offset);
2836 let invisible_offset =
2837 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2838 let origin = content_origin
2839 + gpui::point(
2840 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2841 line_y,
2842 );
2843
2844 if let Some(allowed_regions) = allowed_invisibles_regions {
2845 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2846 if !allowed_regions
2847 .iter()
2848 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2849 {
2850 continue;
2851 }
2852 }
2853 invisible_symbol.paint(origin, line_height, cx).log_err();
2854 }
2855 }
2856}
2857
2858#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2859enum Invisible {
2860 Tab { line_start_offset: usize },
2861 Whitespace { line_offset: usize },
2862}
2863
2864impl Element for EditorElement {
2865 type State = ();
2866
2867 fn request_layout(
2868 &mut self,
2869 _element_state: Option<Self::State>,
2870 cx: &mut gpui::ElementContext,
2871 ) -> (gpui::LayoutId, Self::State) {
2872 cx.with_view_id(self.editor.entity_id(), |cx| {
2873 self.editor.update(cx, |editor, cx| {
2874 editor.set_style(self.style.clone(), cx);
2875
2876 let layout_id = match editor.mode {
2877 EditorMode::SingleLine => {
2878 let rem_size = cx.rem_size();
2879 let mut style = Style::default();
2880 style.size.width = relative(1.).into();
2881 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2882 cx.with_element_context(|cx| cx.request_layout(&style, None))
2883 }
2884 EditorMode::AutoHeight { max_lines } => {
2885 let editor_handle = cx.view().clone();
2886 let max_line_number_width =
2887 self.max_line_number_width(&editor.snapshot(cx), cx);
2888 cx.with_element_context(|cx| {
2889 cx.request_measured_layout(
2890 Style::default(),
2891 move |known_dimensions, _, cx| {
2892 editor_handle
2893 .update(cx, |editor, cx| {
2894 compute_auto_height_layout(
2895 editor,
2896 max_lines,
2897 max_line_number_width,
2898 known_dimensions,
2899 cx,
2900 )
2901 })
2902 .unwrap_or_default()
2903 },
2904 )
2905 })
2906 }
2907 EditorMode::Full => {
2908 let mut style = Style::default();
2909 style.size.width = relative(1.).into();
2910 style.size.height = relative(1.).into();
2911 cx.with_element_context(|cx| cx.request_layout(&style, None))
2912 }
2913 };
2914
2915 (layout_id, ())
2916 })
2917 })
2918 }
2919
2920 fn paint(
2921 &mut self,
2922 bounds: Bounds<gpui::Pixels>,
2923 _element_state: &mut Self::State,
2924 cx: &mut gpui::ElementContext,
2925 ) {
2926 let editor = self.editor.clone();
2927
2928 cx.paint_view(self.editor.entity_id(), |cx| {
2929 cx.with_text_style(
2930 Some(gpui::TextStyleRefinement {
2931 font_size: Some(self.style.text.font_size),
2932 line_height: Some(self.style.text.line_height),
2933 ..Default::default()
2934 }),
2935 |cx| {
2936 let mut layout = self.compute_layout(bounds, cx);
2937 let gutter_bounds = Bounds {
2938 origin: bounds.origin,
2939 size: layout.gutter_size,
2940 };
2941 let text_bounds = Bounds {
2942 origin: gutter_bounds.upper_right(),
2943 size: layout.text_size,
2944 };
2945
2946 let focus_handle = editor.focus_handle(cx);
2947 let key_context = self.editor.read(cx).key_context(cx);
2948 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
2949 self.register_actions(cx);
2950 self.register_key_listeners(cx);
2951
2952 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2953 cx.handle_input(
2954 &focus_handle,
2955 ElementInputHandler::new(bounds, self.editor.clone()),
2956 );
2957
2958 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2959 if layout.gutter_size.width > Pixels::ZERO {
2960 self.paint_gutter(gutter_bounds, &mut layout, cx);
2961 }
2962 self.paint_text(text_bounds, &mut layout, cx);
2963
2964 cx.with_z_index(0, |cx| {
2965 self.paint_mouse_listeners(
2966 bounds,
2967 gutter_bounds,
2968 text_bounds,
2969 &layout,
2970 cx,
2971 );
2972 });
2973 if !layout.blocks.is_empty() {
2974 cx.with_z_index(0, |cx| {
2975 cx.with_element_id(Some("editor_blocks"), |cx| {
2976 self.paint_blocks(bounds, &mut layout, cx);
2977 });
2978 })
2979 }
2980
2981 cx.with_z_index(1, |cx| {
2982 self.paint_overlays(text_bounds, &mut layout, cx);
2983 });
2984
2985 cx.with_z_index(2, |cx| self.paint_scrollbar(bounds, &mut layout, cx));
2986 });
2987 })
2988 },
2989 )
2990 })
2991 }
2992}
2993
2994impl IntoElement for EditorElement {
2995 type Element = Self;
2996
2997 fn element_id(&self) -> Option<gpui::ElementId> {
2998 self.editor.element_id()
2999 }
3000
3001 fn into_element(self) -> Self::Element {
3002 self
3003 }
3004}
3005
3006type BufferRow = u32;
3007
3008pub struct LayoutState {
3009 position_map: Arc<PositionMap>,
3010 gutter_size: Size<Pixels>,
3011 gutter_padding: Pixels,
3012 gutter_margin: Pixels,
3013 text_size: gpui::Size<Pixels>,
3014 mode: EditorMode,
3015 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3016 visible_anchor_range: Range<Anchor>,
3017 visible_display_row_range: Range<u32>,
3018 active_rows: BTreeMap<u32, bool>,
3019 highlighted_rows: Option<Range<u32>>,
3020 line_numbers: Vec<Option<ShapedLine>>,
3021 display_hunks: Vec<DisplayDiffHunk>,
3022 blocks: Vec<BlockLayout>,
3023 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3024 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3025 scrollbar_row_range: Range<f32>,
3026 show_scrollbars: bool,
3027 is_singleton: bool,
3028 max_row: u32,
3029 context_menu: Option<(DisplayPoint, AnyElement)>,
3030 code_actions_indicator: Option<CodeActionsIndicator>,
3031 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3032 fold_indicators: Vec<Option<IconButton>>,
3033 tab_invisible: ShapedLine,
3034 space_invisible: ShapedLine,
3035}
3036
3037struct CodeActionsIndicator {
3038 row: u32,
3039 button: IconButton,
3040}
3041
3042struct PositionMap {
3043 size: Size<Pixels>,
3044 line_height: Pixels,
3045 scroll_position: gpui::Point<Pixels>,
3046 scroll_max: gpui::Point<f32>,
3047 em_width: Pixels,
3048 em_advance: Pixels,
3049 line_layouts: Vec<LineWithInvisibles>,
3050 snapshot: EditorSnapshot,
3051}
3052
3053#[derive(Debug, Copy, Clone)]
3054pub struct PointForPosition {
3055 pub previous_valid: DisplayPoint,
3056 pub next_valid: DisplayPoint,
3057 pub exact_unclipped: DisplayPoint,
3058 pub column_overshoot_after_line_end: u32,
3059}
3060
3061impl PointForPosition {
3062 #[cfg(test)]
3063 pub fn valid(valid: DisplayPoint) -> Self {
3064 Self {
3065 previous_valid: valid,
3066 next_valid: valid,
3067 exact_unclipped: valid,
3068 column_overshoot_after_line_end: 0,
3069 }
3070 }
3071
3072 pub fn as_valid(&self) -> Option<DisplayPoint> {
3073 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3074 Some(self.previous_valid)
3075 } else {
3076 None
3077 }
3078 }
3079}
3080
3081impl PositionMap {
3082 fn point_for_position(
3083 &self,
3084 text_bounds: Bounds<Pixels>,
3085 position: gpui::Point<Pixels>,
3086 ) -> PointForPosition {
3087 let scroll_position = self.snapshot.scroll_position();
3088 let position = position - text_bounds.origin;
3089 let y = position.y.max(px(0.)).min(self.size.height);
3090 let x = position.x + (scroll_position.x * self.em_width);
3091 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3092
3093 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3094 .line_layouts
3095 .get(row as usize - scroll_position.y as usize)
3096 .map(|&LineWithInvisibles { ref line, .. }| line)
3097 {
3098 if let Some(ix) = line.index_for_x(x) {
3099 (ix as u32, px(0.))
3100 } else {
3101 (line.len as u32, px(0.).max(x - line.width))
3102 }
3103 } else {
3104 (0, x)
3105 };
3106
3107 let mut exact_unclipped = DisplayPoint::new(row, column);
3108 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3109 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3110
3111 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3112 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3113 PointForPosition {
3114 previous_valid,
3115 next_valid,
3116 exact_unclipped,
3117 column_overshoot_after_line_end,
3118 }
3119 }
3120}
3121
3122struct BlockLayout {
3123 row: u32,
3124 element: AnyElement,
3125 available_space: Size<AvailableSpace>,
3126 style: BlockStyle,
3127}
3128
3129fn layout_line(
3130 row: u32,
3131 snapshot: &EditorSnapshot,
3132 style: &EditorStyle,
3133 cx: &WindowContext,
3134) -> Result<ShapedLine> {
3135 let mut line = snapshot.line(row);
3136
3137 if line.len() > MAX_LINE_LEN {
3138 let mut len = MAX_LINE_LEN;
3139 while !line.is_char_boundary(len) {
3140 len -= 1;
3141 }
3142
3143 line.truncate(len);
3144 }
3145
3146 cx.text_system().shape_line(
3147 line.into(),
3148 style.text.font_size.to_pixels(cx.rem_size()),
3149 &[TextRun {
3150 len: snapshot.line_len(row) as usize,
3151 font: style.text.font(),
3152 color: Hsla::default(),
3153 background_color: None,
3154 underline: None,
3155 }],
3156 )
3157}
3158
3159#[derive(Debug)]
3160pub struct Cursor {
3161 origin: gpui::Point<Pixels>,
3162 block_width: Pixels,
3163 line_height: Pixels,
3164 color: Hsla,
3165 shape: CursorShape,
3166 block_text: Option<ShapedLine>,
3167 cursor_name: Option<CursorName>,
3168}
3169
3170#[derive(Debug)]
3171pub struct CursorName {
3172 string: SharedString,
3173 color: Hsla,
3174 is_top_row: bool,
3175 z_index: u16,
3176}
3177
3178impl Cursor {
3179 pub fn new(
3180 origin: gpui::Point<Pixels>,
3181 block_width: Pixels,
3182 line_height: Pixels,
3183 color: Hsla,
3184 shape: CursorShape,
3185 block_text: Option<ShapedLine>,
3186 cursor_name: Option<CursorName>,
3187 ) -> Cursor {
3188 Cursor {
3189 origin,
3190 block_width,
3191 line_height,
3192 color,
3193 shape,
3194 block_text,
3195 cursor_name,
3196 }
3197 }
3198
3199 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3200 Bounds {
3201 origin: self.origin + origin,
3202 size: size(self.block_width, self.line_height),
3203 }
3204 }
3205
3206 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3207 let bounds = match self.shape {
3208 CursorShape::Bar => Bounds {
3209 origin: self.origin + origin,
3210 size: size(px(2.0), self.line_height),
3211 },
3212 CursorShape::Block | CursorShape::Hollow => Bounds {
3213 origin: self.origin + origin,
3214 size: size(self.block_width, self.line_height),
3215 },
3216 CursorShape::Underscore => Bounds {
3217 origin: self.origin
3218 + origin
3219 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3220 size: size(self.block_width, px(2.0)),
3221 },
3222 };
3223
3224 //Draw background or border quad
3225 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3226 outline(bounds, self.color)
3227 } else {
3228 fill(bounds, self.color)
3229 };
3230
3231 if let Some(name) = &self.cursor_name {
3232 let text_size = self.line_height / 1.5;
3233
3234 let name_origin = if name.is_top_row {
3235 point(bounds.right() - px(1.), bounds.top())
3236 } else {
3237 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3238 };
3239 cx.with_z_index(name.z_index, |cx| {
3240 div()
3241 .bg(self.color)
3242 .text_size(text_size)
3243 .px_0p5()
3244 .line_height(text_size + px(2.))
3245 .text_color(name.color)
3246 .child(name.string.clone())
3247 .into_any_element()
3248 .draw(
3249 name_origin,
3250 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3251 cx,
3252 )
3253 })
3254 }
3255
3256 cx.paint_quad(cursor);
3257
3258 if let Some(block_text) = &self.block_text {
3259 block_text
3260 .paint(self.origin + origin, self.line_height, cx)
3261 .log_err();
3262 }
3263 }
3264
3265 pub fn shape(&self) -> CursorShape {
3266 self.shape
3267 }
3268}
3269
3270#[derive(Debug)]
3271pub struct HighlightedRange {
3272 pub start_y: Pixels,
3273 pub line_height: Pixels,
3274 pub lines: Vec<HighlightedRangeLine>,
3275 pub color: Hsla,
3276 pub corner_radius: Pixels,
3277}
3278
3279#[derive(Debug)]
3280pub struct HighlightedRangeLine {
3281 pub start_x: Pixels,
3282 pub end_x: Pixels,
3283}
3284
3285impl HighlightedRange {
3286 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3287 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3288 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3289 self.paint_lines(
3290 self.start_y + self.line_height,
3291 &self.lines[1..],
3292 bounds,
3293 cx,
3294 );
3295 } else {
3296 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3297 }
3298 }
3299
3300 fn paint_lines(
3301 &self,
3302 start_y: Pixels,
3303 lines: &[HighlightedRangeLine],
3304 _bounds: Bounds<Pixels>,
3305 cx: &mut ElementContext,
3306 ) {
3307 if lines.is_empty() {
3308 return;
3309 }
3310
3311 let first_line = lines.first().unwrap();
3312 let last_line = lines.last().unwrap();
3313
3314 let first_top_left = point(first_line.start_x, start_y);
3315 let first_top_right = point(first_line.end_x, start_y);
3316
3317 let curve_height = point(Pixels::ZERO, self.corner_radius);
3318 let curve_width = |start_x: Pixels, end_x: Pixels| {
3319 let max = (end_x - start_x) / 2.;
3320 let width = if max < self.corner_radius {
3321 max
3322 } else {
3323 self.corner_radius
3324 };
3325
3326 point(width, Pixels::ZERO)
3327 };
3328
3329 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3330 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3331 path.curve_to(first_top_right + curve_height, first_top_right);
3332
3333 let mut iter = lines.iter().enumerate().peekable();
3334 while let Some((ix, line)) = iter.next() {
3335 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3336
3337 if let Some((_, next_line)) = iter.peek() {
3338 let next_top_right = point(next_line.end_x, bottom_right.y);
3339
3340 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3341 Ordering::Equal => {
3342 path.line_to(bottom_right);
3343 }
3344 Ordering::Less => {
3345 let curve_width = curve_width(next_top_right.x, bottom_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 Ordering::Greater => {
3356 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3357 path.line_to(bottom_right - curve_height);
3358 if self.corner_radius > Pixels::ZERO {
3359 path.curve_to(bottom_right + curve_width, bottom_right);
3360 }
3361 path.line_to(next_top_right - curve_width);
3362 if self.corner_radius > Pixels::ZERO {
3363 path.curve_to(next_top_right + curve_height, next_top_right);
3364 }
3365 }
3366 }
3367 } else {
3368 let curve_width = curve_width(line.start_x, line.end_x);
3369 path.line_to(bottom_right - curve_height);
3370 if self.corner_radius > Pixels::ZERO {
3371 path.curve_to(bottom_right - curve_width, bottom_right);
3372 }
3373
3374 let bottom_left = point(line.start_x, bottom_right.y);
3375 path.line_to(bottom_left + curve_width);
3376 if self.corner_radius > Pixels::ZERO {
3377 path.curve_to(bottom_left - curve_height, bottom_left);
3378 }
3379 }
3380 }
3381
3382 if first_line.start_x > last_line.start_x {
3383 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3384 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3385 path.line_to(second_top_left + curve_height);
3386 if self.corner_radius > Pixels::ZERO {
3387 path.curve_to(second_top_left + curve_width, second_top_left);
3388 }
3389 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3390 path.line_to(first_bottom_left - curve_width);
3391 if self.corner_radius > Pixels::ZERO {
3392 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3393 }
3394 }
3395
3396 path.line_to(first_top_left + curve_height);
3397 if self.corner_radius > Pixels::ZERO {
3398 path.curve_to(first_top_left + top_curve_width, first_top_left);
3399 }
3400 path.line_to(first_top_right - top_curve_width);
3401
3402 cx.paint_path(path, self.color);
3403 }
3404}
3405
3406pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3407 (delta.pow(1.5) / 100.0).into()
3408}
3409
3410fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3411 (delta.pow(1.2) / 300.0).into()
3412}
3413
3414#[cfg(test)]
3415mod tests {
3416 use super::*;
3417 use crate::{
3418 display_map::{BlockDisposition, BlockProperties},
3419 editor_tests::{init_test, update_test_language_settings},
3420 Editor, MultiBuffer,
3421 };
3422 use gpui::TestAppContext;
3423 use language::language_settings;
3424 use log::info;
3425 use std::{num::NonZeroU32, sync::Arc};
3426 use util::test::sample_text;
3427
3428 #[gpui::test]
3429 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3430 init_test(cx, |_| {});
3431 let window = cx.add_window(|cx| {
3432 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3433 Editor::new(EditorMode::Full, buffer, None, cx)
3434 });
3435
3436 let editor = window.root(cx).unwrap();
3437 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3438 let element = EditorElement::new(&editor, style);
3439
3440 let layouts = window
3441 .update(cx, |editor, cx| {
3442 let snapshot = editor.snapshot(cx);
3443 element
3444 .shape_line_numbers(
3445 0..6,
3446 &Default::default(),
3447 DisplayPoint::new(0, 0),
3448 false,
3449 &snapshot,
3450 cx,
3451 )
3452 .0
3453 })
3454 .unwrap();
3455 assert_eq!(layouts.len(), 6);
3456
3457 let relative_rows = window
3458 .update(cx, |editor, cx| {
3459 let snapshot = editor.snapshot(cx);
3460 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3461 })
3462 .unwrap();
3463 assert_eq!(relative_rows[&0], 3);
3464 assert_eq!(relative_rows[&1], 2);
3465 assert_eq!(relative_rows[&2], 1);
3466 // current line has no relative number
3467 assert_eq!(relative_rows[&4], 1);
3468 assert_eq!(relative_rows[&5], 2);
3469
3470 // works if cursor is before screen
3471 let relative_rows = window
3472 .update(cx, |editor, cx| {
3473 let snapshot = editor.snapshot(cx);
3474
3475 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3476 })
3477 .unwrap();
3478 assert_eq!(relative_rows.len(), 3);
3479 assert_eq!(relative_rows[&3], 2);
3480 assert_eq!(relative_rows[&4], 3);
3481 assert_eq!(relative_rows[&5], 4);
3482
3483 // works if cursor is after screen
3484 let relative_rows = window
3485 .update(cx, |editor, cx| {
3486 let snapshot = editor.snapshot(cx);
3487
3488 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3489 })
3490 .unwrap();
3491 assert_eq!(relative_rows.len(), 3);
3492 assert_eq!(relative_rows[&0], 5);
3493 assert_eq!(relative_rows[&1], 4);
3494 assert_eq!(relative_rows[&2], 3);
3495 }
3496
3497 #[gpui::test]
3498 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3499 init_test(cx, |_| {});
3500
3501 let window = cx.add_window(|cx| {
3502 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3503 Editor::new(EditorMode::Full, buffer, None, cx)
3504 });
3505 let editor = window.root(cx).unwrap();
3506 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3507 let mut element = EditorElement::new(&editor, style);
3508
3509 window
3510 .update(cx, |editor, cx| {
3511 editor.cursor_shape = CursorShape::Block;
3512 editor.change_selections(None, cx, |s| {
3513 s.select_ranges([
3514 Point::new(0, 0)..Point::new(1, 0),
3515 Point::new(3, 2)..Point::new(3, 3),
3516 Point::new(5, 6)..Point::new(6, 0),
3517 ]);
3518 });
3519 })
3520 .unwrap();
3521 let state = cx
3522 .update_window(window.into(), |view, cx| {
3523 cx.with_element_context(|cx| {
3524 cx.with_view_id(view.entity_id(), |cx| {
3525 element.compute_layout(
3526 Bounds {
3527 origin: point(px(500.), px(500.)),
3528 size: size(px(500.), px(500.)),
3529 },
3530 cx,
3531 )
3532 })
3533 })
3534 })
3535 .unwrap();
3536
3537 assert_eq!(state.selections.len(), 1);
3538 let local_selections = &state.selections[0].1;
3539 assert_eq!(local_selections.len(), 3);
3540 // moves cursor back one line
3541 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3542 assert_eq!(
3543 local_selections[0].range,
3544 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3545 );
3546
3547 // moves cursor back one column
3548 assert_eq!(
3549 local_selections[1].range,
3550 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3551 );
3552 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3553
3554 // leaves cursor on the max point
3555 assert_eq!(
3556 local_selections[2].range,
3557 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3558 );
3559 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3560
3561 // active lines does not include 1 (even though the range of the selection does)
3562 assert_eq!(
3563 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3564 vec![0, 3, 5, 6]
3565 );
3566
3567 // multi-buffer support
3568 // in DisplayPoint co-ordinates, this is what we're dealing with:
3569 // 0: [[file
3570 // 1: header]]
3571 // 2: aaaaaa
3572 // 3: bbbbbb
3573 // 4: cccccc
3574 // 5:
3575 // 6: ...
3576 // 7: ffffff
3577 // 8: gggggg
3578 // 9: hhhhhh
3579 // 10:
3580 // 11: [[file
3581 // 12: header]]
3582 // 13: bbbbbb
3583 // 14: cccccc
3584 // 15: dddddd
3585 let window = cx.add_window(|cx| {
3586 let buffer = MultiBuffer::build_multi(
3587 [
3588 (
3589 &(sample_text(8, 6, 'a') + "\n"),
3590 vec![
3591 Point::new(0, 0)..Point::new(3, 0),
3592 Point::new(4, 0)..Point::new(7, 0),
3593 ],
3594 ),
3595 (
3596 &(sample_text(8, 6, 'a') + "\n"),
3597 vec![Point::new(1, 0)..Point::new(3, 0)],
3598 ),
3599 ],
3600 cx,
3601 );
3602 Editor::new(EditorMode::Full, buffer, None, cx)
3603 });
3604 let editor = window.root(cx).unwrap();
3605 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3606 let mut element = EditorElement::new(&editor, style);
3607 let _state = window.update(cx, |editor, cx| {
3608 editor.cursor_shape = CursorShape::Block;
3609 editor.change_selections(None, cx, |s| {
3610 s.select_display_ranges([
3611 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3612 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3613 ]);
3614 });
3615 });
3616
3617 let state = cx
3618 .update_window(window.into(), |view, cx| {
3619 cx.with_element_context(|cx| {
3620 cx.with_view_id(view.entity_id(), |cx| {
3621 element.compute_layout(
3622 Bounds {
3623 origin: point(px(500.), px(500.)),
3624 size: size(px(500.), px(500.)),
3625 },
3626 cx,
3627 )
3628 })
3629 })
3630 })
3631 .unwrap();
3632 assert_eq!(state.selections.len(), 1);
3633 let local_selections = &state.selections[0].1;
3634 assert_eq!(local_selections.len(), 2);
3635
3636 // moves cursor on excerpt boundary back a line
3637 // and doesn't allow selection to bleed through
3638 assert_eq!(
3639 local_selections[0].range,
3640 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3641 );
3642 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3643 // moves cursor on buffer boundary back two lines
3644 // and doesn't allow selection to bleed through
3645 assert_eq!(
3646 local_selections[1].range,
3647 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3648 );
3649 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3650 }
3651
3652 #[gpui::test]
3653 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3654 init_test(cx, |_| {});
3655
3656 let window = cx.add_window(|cx| {
3657 let buffer = MultiBuffer::build_simple("", cx);
3658 Editor::new(EditorMode::Full, buffer, None, cx)
3659 });
3660 let editor = window.root(cx).unwrap();
3661 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3662 window
3663 .update(cx, |editor, cx| {
3664 editor.set_placeholder_text("hello", cx);
3665 editor.insert_blocks(
3666 [BlockProperties {
3667 style: BlockStyle::Fixed,
3668 disposition: BlockDisposition::Above,
3669 height: 3,
3670 position: Anchor::min(),
3671 render: Arc::new(|_| div().into_any()),
3672 }],
3673 None,
3674 cx,
3675 );
3676
3677 // Blur the editor so that it displays placeholder text.
3678 cx.blur();
3679 })
3680 .unwrap();
3681
3682 let mut element = EditorElement::new(&editor, style);
3683 let state = cx
3684 .update_window(window.into(), |view, cx| {
3685 cx.with_element_context(|cx| {
3686 cx.with_view_id(view.entity_id(), |cx| {
3687 element.compute_layout(
3688 Bounds {
3689 origin: point(px(500.), px(500.)),
3690 size: size(px(500.), px(500.)),
3691 },
3692 cx,
3693 )
3694 })
3695 })
3696 })
3697 .unwrap();
3698 let size = state.position_map.size;
3699
3700 assert_eq!(state.position_map.line_layouts.len(), 4);
3701 assert_eq!(
3702 state
3703 .line_numbers
3704 .iter()
3705 .map(Option::is_some)
3706 .collect::<Vec<_>>(),
3707 &[false, false, false, true]
3708 );
3709
3710 // Don't panic.
3711 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3712 cx.update_window(window.into(), |_, cx| {
3713 cx.with_element_context(|cx| element.paint(bounds, &mut (), cx))
3714 })
3715 .unwrap()
3716 }
3717
3718 #[gpui::test]
3719 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3720 const TAB_SIZE: u32 = 4;
3721
3722 let input_text = "\t \t|\t| a b";
3723 let expected_invisibles = vec![
3724 Invisible::Tab {
3725 line_start_offset: 0,
3726 },
3727 Invisible::Whitespace {
3728 line_offset: TAB_SIZE as usize,
3729 },
3730 Invisible::Tab {
3731 line_start_offset: TAB_SIZE as usize + 1,
3732 },
3733 Invisible::Tab {
3734 line_start_offset: TAB_SIZE as usize * 2 + 1,
3735 },
3736 Invisible::Whitespace {
3737 line_offset: TAB_SIZE as usize * 3 + 1,
3738 },
3739 Invisible::Whitespace {
3740 line_offset: TAB_SIZE as usize * 3 + 3,
3741 },
3742 ];
3743 assert_eq!(
3744 expected_invisibles.len(),
3745 input_text
3746 .chars()
3747 .filter(|initial_char| initial_char.is_whitespace())
3748 .count(),
3749 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3750 );
3751
3752 init_test(cx, |s| {
3753 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3754 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3755 });
3756
3757 let actual_invisibles =
3758 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3759
3760 assert_eq!(expected_invisibles, actual_invisibles);
3761 }
3762
3763 #[gpui::test]
3764 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3765 init_test(cx, |s| {
3766 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3767 s.defaults.tab_size = NonZeroU32::new(4);
3768 });
3769
3770 for editor_mode_without_invisibles in [
3771 EditorMode::SingleLine,
3772 EditorMode::AutoHeight { max_lines: 100 },
3773 ] {
3774 let invisibles = collect_invisibles_from_new_editor(
3775 cx,
3776 editor_mode_without_invisibles,
3777 "\t\t\t| | a b",
3778 px(500.0),
3779 );
3780 assert!(invisibles.is_empty(),
3781 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3782 }
3783 }
3784
3785 #[gpui::test]
3786 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3787 let tab_size = 4;
3788 let input_text = "a\tbcd ".repeat(9);
3789 let repeated_invisibles = [
3790 Invisible::Tab {
3791 line_start_offset: 1,
3792 },
3793 Invisible::Whitespace {
3794 line_offset: tab_size as usize + 3,
3795 },
3796 Invisible::Whitespace {
3797 line_offset: tab_size as usize + 4,
3798 },
3799 Invisible::Whitespace {
3800 line_offset: tab_size as usize + 5,
3801 },
3802 ];
3803 let expected_invisibles = std::iter::once(repeated_invisibles)
3804 .cycle()
3805 .take(9)
3806 .flatten()
3807 .collect::<Vec<_>>();
3808 assert_eq!(
3809 expected_invisibles.len(),
3810 input_text
3811 .chars()
3812 .filter(|initial_char| initial_char.is_whitespace())
3813 .count(),
3814 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3815 );
3816 info!("Expected invisibles: {expected_invisibles:?}");
3817
3818 init_test(cx, |_| {});
3819
3820 // Put the same string with repeating whitespace pattern into editors of various size,
3821 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3822 let resize_step = 10.0;
3823 let mut editor_width = 200.0;
3824 while editor_width <= 1000.0 {
3825 update_test_language_settings(cx, |s| {
3826 s.defaults.tab_size = NonZeroU32::new(tab_size);
3827 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3828 s.defaults.preferred_line_length = Some(editor_width as u32);
3829 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3830 });
3831
3832 let actual_invisibles = collect_invisibles_from_new_editor(
3833 cx,
3834 EditorMode::Full,
3835 &input_text,
3836 px(editor_width),
3837 );
3838
3839 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3840 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3841 let mut i = 0;
3842 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3843 i = actual_index;
3844 match expected_invisibles.get(i) {
3845 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3846 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3847 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3848 _ => {
3849 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3850 }
3851 },
3852 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3853 }
3854 }
3855 let missing_expected_invisibles = &expected_invisibles[i + 1..];
3856 assert!(
3857 missing_expected_invisibles.is_empty(),
3858 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3859 );
3860
3861 editor_width += resize_step;
3862 }
3863 }
3864
3865 fn collect_invisibles_from_new_editor(
3866 cx: &mut TestAppContext,
3867 editor_mode: EditorMode,
3868 input_text: &str,
3869 editor_width: Pixels,
3870 ) -> Vec<Invisible> {
3871 info!(
3872 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
3873 editor_width.0
3874 );
3875 let window = cx.add_window(|cx| {
3876 let buffer = MultiBuffer::build_simple(&input_text, cx);
3877 Editor::new(editor_mode, buffer, None, cx)
3878 });
3879 let editor = window.root(cx).unwrap();
3880 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3881 let mut element = EditorElement::new(&editor, style);
3882 window
3883 .update(cx, |editor, cx| {
3884 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3885 editor.set_wrap_width(Some(editor_width), cx);
3886 })
3887 .unwrap();
3888 let layout_state = cx
3889 .update_window(window.into(), |_, cx| {
3890 cx.with_element_context(|cx| {
3891 element.compute_layout(
3892 Bounds {
3893 origin: point(px(500.), px(500.)),
3894 size: size(px(500.), px(500.)),
3895 },
3896 cx,
3897 )
3898 })
3899 })
3900 .unwrap();
3901
3902 layout_state
3903 .position_map
3904 .line_layouts
3905 .iter()
3906 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3907 .flatten()
3908 .cloned()
3909 .collect()
3910 }
3911}
3912
3913pub fn register_action<T: Action>(
3914 view: &View<Editor>,
3915 cx: &mut WindowContext,
3916 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
3917) {
3918 let view = view.clone();
3919 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
3920 let action = action.downcast_ref().unwrap();
3921 if phase == DispatchPhase::Bubble {
3922 view.update(cx, |editor, cx| {
3923 listener(editor, action, cx);
3924 })
3925 }
3926 })
3927}
3928
3929fn compute_auto_height_layout(
3930 editor: &mut Editor,
3931 max_lines: usize,
3932 max_line_number_width: Pixels,
3933 known_dimensions: Size<Option<Pixels>>,
3934 cx: &mut ViewContext<Editor>,
3935) -> Option<Size<Pixels>> {
3936 let width = known_dimensions.width?;
3937 if let Some(height) = known_dimensions.height {
3938 return Some(size(width, height));
3939 }
3940
3941 let style = editor.style.as_ref().unwrap();
3942 let font_id = cx.text_system().resolve_font(&style.text.font());
3943 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3944 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3945 let em_width = cx
3946 .text_system()
3947 .typographic_bounds(font_id, font_size, 'm')
3948 .unwrap()
3949 .size
3950 .width;
3951
3952 let mut snapshot = editor.snapshot(cx);
3953 let gutter_dimensions =
3954 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
3955
3956 editor.gutter_width = gutter_dimensions.width;
3957 let text_width = width - gutter_dimensions.width;
3958 let overscroll = size(em_width, px(0.));
3959
3960 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
3961 if editor.set_wrap_width(Some(editor_width), cx) {
3962 snapshot = editor.snapshot(cx);
3963 }
3964
3965 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
3966 let height = scroll_height
3967 .max(line_height)
3968 .min(line_height * max_lines as f32);
3969
3970 Some(size(width, height))
3971}