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