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