1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::ShowScrollbar,
7 git::{diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::{
9 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
10 },
11 items::BufferSearchHighlights,
12 link_go_to_definition::{
13 go_to_fetched_definition, go_to_fetched_type_definition, show_link_definition,
14 update_go_to_definition_link, update_inlay_link_and_hover_points, GoToDefinitionTrigger,
15 LinkGoToDefinitionState,
16 },
17 mouse_context_menu,
18 scroll::scroll_amount::ScrollAmount,
19 CursorShape, DisplayPoint, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
20 HalfPageDown, HalfPageUp, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, SelectPhase,
21 Selection, SoftWrap, ToPoint, MAX_LINE_LEN,
22};
23use anyhow::Result;
24use collections::{BTreeMap, HashMap};
25use git::diff::DiffHunkStatus;
26use gpui::{
27 div, fill, outline, overlay, point, px, quad, relative, size, transparent_black, Action,
28 AnchorCorner, AnyElement, AvailableSpace, BorrowWindow, Bounds, ContentMask, Corners,
29 CursorStyle, DispatchPhase, Edges, Element, ElementInputHandler, Entity, Hsla,
30 InteractiveBounds, InteractiveElement, IntoElement, ModifiersChangedEvent, MouseButton,
31 MouseDownEvent, MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, ScrollDelta,
32 ScrollWheelEvent, ShapedLine, SharedString, Size, StackingOrder, StatefulInteractiveElement,
33 Style, Styled, TextRun, TextStyle, View, ViewContext, WindowContext,
34};
35use itertools::Itertools;
36use language::language_settings::ShowWhitespaceSetting;
37use multi_buffer::Anchor;
38use project::{
39 project_settings::{GitGutterSetting, ProjectSettings},
40 ProjectPath,
41};
42use settings::Settings;
43use smallvec::SmallVec;
44use std::{
45 any::TypeId,
46 borrow::Cow,
47 cmp::{self, Ordering},
48 fmt::Write,
49 iter,
50 ops::Range,
51 sync::Arc,
52};
53use sum_tree::Bias;
54use theme::{ActiveTheme, PlayerColor};
55use ui::prelude::*;
56use ui::{h_flex, ButtonLike, ButtonStyle, IconButton, Tooltip};
57use util::ResultExt;
58use workspace::item::Item;
59
60struct SelectionLayout {
61 head: DisplayPoint,
62 cursor_shape: CursorShape,
63 is_newest: bool,
64 is_local: bool,
65 range: Range<DisplayPoint>,
66 active_rows: Range<u32>,
67 user_name: Option<SharedString>,
68}
69
70impl SelectionLayout {
71 fn new<T: ToPoint + ToDisplayPoint + Clone>(
72 selection: Selection<T>,
73 line_mode: bool,
74 cursor_shape: CursorShape,
75 map: &DisplaySnapshot,
76 is_newest: bool,
77 is_local: bool,
78 user_name: Option<SharedString>,
79 ) -> Self {
80 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
81 let display_selection = point_selection.map(|p| p.to_display_point(map));
82 let mut range = display_selection.range();
83 let mut head = display_selection.head();
84 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
85 ..map.next_line_boundary(point_selection.end).1.row();
86
87 // vim visual line mode
88 if line_mode {
89 let point_range = map.expand_to_line(point_selection.range());
90 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
91 }
92
93 // any vim visual mode (including line mode)
94 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
95 if head.column() > 0 {
96 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
97 } else if head.row() > 0 && head != map.max_point() {
98 head = map.clip_point(
99 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
100 Bias::Left,
101 );
102 // updating range.end is a no-op unless you're cursor is
103 // on the newline containing a multi-buffer divider
104 // in which case the clip_point may have moved the head up
105 // an additional row.
106 range.end = DisplayPoint::new(head.row() + 1, 0);
107 active_rows.end = head.row();
108 }
109 }
110
111 Self {
112 head,
113 cursor_shape,
114 is_newest,
115 is_local,
116 range,
117 active_rows,
118 user_name,
119 }
120 }
121}
122
123pub struct EditorElement {
124 editor: View<Editor>,
125 style: EditorStyle,
126}
127
128impl EditorElement {
129 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
130 Self {
131 editor: editor.clone(),
132 style,
133 }
134 }
135
136 fn register_actions(&self, cx: &mut WindowContext) {
137 let view = &self.editor;
138 view.update(cx, |editor, cx| {
139 for action in editor.editor_actions.iter() {
140 (action)(cx)
141 }
142 });
143
144 crate::rust_analyzer_ext::apply_related_actions(view, cx);
145 register_action(view, cx, Editor::move_left);
146 register_action(view, cx, Editor::move_right);
147 register_action(view, cx, Editor::move_down);
148 register_action(view, cx, Editor::move_up);
149 register_action(view, cx, Editor::cancel);
150 register_action(view, cx, Editor::newline);
151 register_action(view, cx, Editor::newline_above);
152 register_action(view, cx, Editor::newline_below);
153 register_action(view, cx, Editor::backspace);
154 register_action(view, cx, Editor::delete);
155 register_action(view, cx, Editor::tab);
156 register_action(view, cx, Editor::tab_prev);
157 register_action(view, cx, Editor::indent);
158 register_action(view, cx, Editor::outdent);
159 register_action(view, cx, Editor::delete_line);
160 register_action(view, cx, Editor::join_lines);
161 register_action(view, cx, Editor::sort_lines_case_sensitive);
162 register_action(view, cx, Editor::sort_lines_case_insensitive);
163 register_action(view, cx, Editor::reverse_lines);
164 register_action(view, cx, Editor::shuffle_lines);
165 register_action(view, cx, Editor::convert_to_upper_case);
166 register_action(view, cx, Editor::convert_to_lower_case);
167 register_action(view, cx, Editor::convert_to_title_case);
168 register_action(view, cx, Editor::convert_to_snake_case);
169 register_action(view, cx, Editor::convert_to_kebab_case);
170 register_action(view, cx, Editor::convert_to_upper_camel_case);
171 register_action(view, cx, Editor::convert_to_lower_camel_case);
172 register_action(view, cx, Editor::delete_to_previous_word_start);
173 register_action(view, cx, Editor::delete_to_previous_subword_start);
174 register_action(view, cx, Editor::delete_to_next_word_end);
175 register_action(view, cx, Editor::delete_to_next_subword_end);
176 register_action(view, cx, Editor::delete_to_beginning_of_line);
177 register_action(view, cx, Editor::delete_to_end_of_line);
178 register_action(view, cx, Editor::cut_to_end_of_line);
179 register_action(view, cx, Editor::duplicate_line);
180 register_action(view, cx, Editor::move_line_up);
181 register_action(view, cx, Editor::move_line_down);
182 register_action(view, cx, Editor::transpose);
183 register_action(view, cx, Editor::cut);
184 register_action(view, cx, Editor::copy);
185 register_action(view, cx, Editor::paste);
186 register_action(view, cx, Editor::undo);
187 register_action(view, cx, Editor::redo);
188 register_action(view, cx, Editor::move_page_up);
189 register_action(view, cx, Editor::move_page_down);
190 register_action(view, cx, Editor::next_screen);
191 register_action(view, cx, Editor::scroll_cursor_top);
192 register_action(view, cx, Editor::scroll_cursor_center);
193 register_action(view, cx, Editor::scroll_cursor_bottom);
194 register_action(view, cx, |editor, _: &LineDown, cx| {
195 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
196 });
197 register_action(view, cx, |editor, _: &LineUp, cx| {
198 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
199 });
200 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
201 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
202 });
203 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
204 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
205 });
206 register_action(view, cx, |editor, _: &PageDown, cx| {
207 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
208 });
209 register_action(view, cx, |editor, _: &PageUp, cx| {
210 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
211 });
212 register_action(view, cx, Editor::move_to_previous_word_start);
213 register_action(view, cx, Editor::move_to_previous_subword_start);
214 register_action(view, cx, Editor::move_to_next_word_end);
215 register_action(view, cx, Editor::move_to_next_subword_end);
216 register_action(view, cx, Editor::move_to_beginning_of_line);
217 register_action(view, cx, Editor::move_to_end_of_line);
218 register_action(view, cx, Editor::move_to_start_of_paragraph);
219 register_action(view, cx, Editor::move_to_end_of_paragraph);
220 register_action(view, cx, Editor::move_to_beginning);
221 register_action(view, cx, Editor::move_to_end);
222 register_action(view, cx, Editor::select_up);
223 register_action(view, cx, Editor::select_down);
224 register_action(view, cx, Editor::select_left);
225 register_action(view, cx, Editor::select_right);
226 register_action(view, cx, Editor::select_to_previous_word_start);
227 register_action(view, cx, Editor::select_to_previous_subword_start);
228 register_action(view, cx, Editor::select_to_next_word_end);
229 register_action(view, cx, Editor::select_to_next_subword_end);
230 register_action(view, cx, Editor::select_to_beginning_of_line);
231 register_action(view, cx, Editor::select_to_end_of_line);
232 register_action(view, cx, Editor::select_to_start_of_paragraph);
233 register_action(view, cx, Editor::select_to_end_of_paragraph);
234 register_action(view, cx, Editor::select_to_beginning);
235 register_action(view, cx, Editor::select_to_end);
236 register_action(view, cx, Editor::select_all);
237 register_action(view, cx, |editor, action, cx| {
238 editor.select_all_matches(action, cx).log_err();
239 });
240 register_action(view, cx, Editor::select_line);
241 register_action(view, cx, Editor::split_selection_into_lines);
242 register_action(view, cx, Editor::add_selection_above);
243 register_action(view, cx, Editor::add_selection_below);
244 register_action(view, cx, |editor, action, cx| {
245 editor.select_next(action, cx).log_err();
246 });
247 register_action(view, cx, |editor, action, cx| {
248 editor.select_previous(action, cx).log_err();
249 });
250 register_action(view, cx, Editor::toggle_comments);
251 register_action(view, cx, Editor::select_larger_syntax_node);
252 register_action(view, cx, Editor::select_smaller_syntax_node);
253 register_action(view, cx, Editor::move_to_enclosing_bracket);
254 register_action(view, cx, Editor::undo_selection);
255 register_action(view, cx, Editor::redo_selection);
256 register_action(view, cx, Editor::go_to_diagnostic);
257 register_action(view, cx, Editor::go_to_prev_diagnostic);
258 register_action(view, cx, Editor::go_to_hunk);
259 register_action(view, cx, Editor::go_to_prev_hunk);
260 register_action(view, cx, Editor::go_to_definition);
261 register_action(view, cx, Editor::go_to_definition_split);
262 register_action(view, cx, Editor::go_to_type_definition);
263 register_action(view, cx, Editor::go_to_type_definition_split);
264 register_action(view, cx, Editor::fold);
265 register_action(view, cx, Editor::fold_at);
266 register_action(view, cx, Editor::unfold_lines);
267 register_action(view, cx, Editor::unfold_at);
268 register_action(view, cx, Editor::fold_selected_ranges);
269 register_action(view, cx, Editor::show_completions);
270 register_action(view, cx, Editor::toggle_code_actions);
271 register_action(view, cx, Editor::open_excerpts);
272 register_action(view, cx, Editor::toggle_soft_wrap);
273 register_action(view, cx, Editor::toggle_inlay_hints);
274 register_action(view, cx, hover_popover::hover);
275 register_action(view, cx, Editor::reveal_in_finder);
276 register_action(view, cx, Editor::copy_path);
277 register_action(view, cx, Editor::copy_relative_path);
278 register_action(view, cx, Editor::copy_highlight_json);
279 register_action(view, cx, |editor, action, cx| {
280 if let Some(task) = editor.format(action, cx) {
281 task.detach_and_log_err(cx);
282 } else {
283 cx.propagate();
284 }
285 });
286 register_action(view, cx, Editor::restart_language_server);
287 register_action(view, cx, Editor::show_character_palette);
288 register_action(view, cx, |editor, action, cx| {
289 if let Some(task) = editor.confirm_completion(action, cx) {
290 task.detach_and_log_err(cx);
291 } else {
292 cx.propagate();
293 }
294 });
295 register_action(view, cx, |editor, action, cx| {
296 if let Some(task) = editor.confirm_code_action(action, cx) {
297 task.detach_and_log_err(cx);
298 } else {
299 cx.propagate();
300 }
301 });
302 register_action(view, cx, |editor, action, cx| {
303 if let Some(task) = editor.rename(action, cx) {
304 task.detach_and_log_err(cx);
305 } else {
306 cx.propagate();
307 }
308 });
309 register_action(view, cx, |editor, action, cx| {
310 if let Some(task) = editor.confirm_rename(action, cx) {
311 task.detach_and_log_err(cx);
312 } else {
313 cx.propagate();
314 }
315 });
316 register_action(view, cx, |editor, action, cx| {
317 if let Some(task) = editor.find_all_references(action, cx) {
318 task.detach_and_log_err(cx);
319 } else {
320 cx.propagate();
321 }
322 });
323 register_action(view, cx, Editor::next_copilot_suggestion);
324 register_action(view, cx, Editor::previous_copilot_suggestion);
325 register_action(view, cx, Editor::copilot_suggest);
326 register_action(view, cx, Editor::context_menu_first);
327 register_action(view, cx, Editor::context_menu_prev);
328 register_action(view, cx, Editor::context_menu_next);
329 register_action(view, cx, Editor::context_menu_last);
330 register_action(view, cx, Editor::display_cursor_names);
331 }
332
333 fn register_key_listeners(&self, cx: &mut WindowContext) {
334 cx.on_key_event({
335 let editor = self.editor.clone();
336 move |event: &ModifiersChangedEvent, phase, cx| {
337 if phase != DispatchPhase::Bubble {
338 return;
339 }
340
341 if editor.update(cx, |editor, cx| Self::modifiers_changed(editor, event, cx)) {
342 cx.stop_propagation();
343 }
344 }
345 });
346 }
347
348 pub(crate) fn modifiers_changed(
349 editor: &mut Editor,
350 event: &ModifiersChangedEvent,
351 cx: &mut ViewContext<Editor>,
352 ) -> bool {
353 let pending_selection = editor.has_pending_selection();
354
355 if let Some(point) = &editor.link_go_to_definition_state.last_trigger_point {
356 if event.command && !pending_selection {
357 let point = point.clone();
358 let snapshot = editor.snapshot(cx);
359 let kind = point.definition_kind(event.shift);
360
361 show_link_definition(kind, editor, point, snapshot, cx);
362 return false;
363 }
364 }
365
366 {
367 if editor.link_go_to_definition_state.symbol_range.is_some()
368 || !editor.link_go_to_definition_state.definitions.is_empty()
369 {
370 editor.link_go_to_definition_state.symbol_range.take();
371 editor.link_go_to_definition_state.definitions.clear();
372 cx.notify();
373 }
374
375 editor.link_go_to_definition_state.task = None;
376
377 editor.clear_highlights::<LinkGoToDefinitionState>(cx);
378 }
379
380 false
381 }
382
383 fn mouse_left_down(
384 editor: &mut Editor,
385 event: &MouseDownEvent,
386 position_map: &PositionMap,
387 text_bounds: Bounds<Pixels>,
388 gutter_bounds: Bounds<Pixels>,
389 stacking_order: &StackingOrder,
390 cx: &mut ViewContext<Editor>,
391 ) {
392 let mut click_count = event.click_count;
393 let modifiers = event.modifiers;
394
395 if cx.default_prevented() {
396 return;
397 } else if gutter_bounds.contains(&event.position) {
398 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
399 } else if !text_bounds.contains(&event.position) {
400 return;
401 }
402 if !cx.was_top_layer(&event.position, stacking_order) {
403 return;
404 }
405
406 let point_for_position = position_map.point_for_position(text_bounds, event.position);
407 let position = point_for_position.previous_valid;
408 if modifiers.shift && modifiers.alt {
409 editor.select(
410 SelectPhase::BeginColumnar {
411 position,
412 goal_column: point_for_position.exact_unclipped.column(),
413 },
414 cx,
415 );
416 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
417 editor.select(
418 SelectPhase::Extend {
419 position,
420 click_count,
421 },
422 cx,
423 );
424 } else {
425 editor.select(
426 SelectPhase::Begin {
427 position,
428 add: modifiers.alt,
429 click_count,
430 },
431 cx,
432 );
433 }
434
435 cx.stop_propagation();
436 }
437
438 fn mouse_right_down(
439 editor: &mut Editor,
440 event: &MouseDownEvent,
441 position_map: &PositionMap,
442 text_bounds: Bounds<Pixels>,
443 cx: &mut ViewContext<Editor>,
444 ) {
445 if !text_bounds.contains(&event.position) {
446 return;
447 }
448 let point_for_position = position_map.point_for_position(text_bounds, event.position);
449 mouse_context_menu::deploy_context_menu(
450 editor,
451 event.position,
452 point_for_position.previous_valid,
453 cx,
454 );
455 cx.stop_propagation();
456 }
457
458 fn mouse_up(
459 editor: &mut Editor,
460 event: &MouseUpEvent,
461 position_map: &PositionMap,
462 text_bounds: Bounds<Pixels>,
463 interactive_bounds: &InteractiveBounds,
464 stacking_order: &StackingOrder,
465 cx: &mut ViewContext<Editor>,
466 ) {
467 let end_selection = editor.has_pending_selection();
468 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
469
470 if end_selection {
471 editor.select(SelectPhase::End, cx);
472 }
473
474 if interactive_bounds.visibly_contains(&event.position, cx)
475 && !pending_nonempty_selections
476 && event.modifiers.command
477 && text_bounds.contains(&event.position)
478 && cx.was_top_layer(&event.position, stacking_order)
479 {
480 let point = position_map.point_for_position(text_bounds, event.position);
481 let could_be_inlay = point.as_valid().is_none();
482 let split = event.modifiers.alt;
483 if event.modifiers.shift || could_be_inlay {
484 go_to_fetched_type_definition(editor, point, split, cx);
485 } else {
486 go_to_fetched_definition(editor, point, split, cx);
487 }
488
489 cx.stop_propagation();
490 } else if end_selection {
491 cx.stop_propagation();
492 }
493 }
494
495 fn mouse_dragged(
496 editor: &mut Editor,
497 event: &MouseMoveEvent,
498 position_map: &PositionMap,
499 text_bounds: Bounds<Pixels>,
500 _gutter_bounds: Bounds<Pixels>,
501 _stacking_order: &StackingOrder,
502 cx: &mut ViewContext<Editor>,
503 ) {
504 if !editor.has_pending_selection() {
505 return;
506 }
507
508 let point_for_position = position_map.point_for_position(text_bounds, event.position);
509 let mut scroll_delta = gpui::Point::<f32>::default();
510 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
511 let top = text_bounds.origin.y + vertical_margin;
512 let bottom = text_bounds.lower_left().y - vertical_margin;
513 if event.position.y < top {
514 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
515 }
516 if event.position.y > bottom {
517 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
518 }
519
520 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
521 let left = text_bounds.origin.x + horizontal_margin;
522 let right = text_bounds.upper_right().x - horizontal_margin;
523 if event.position.x < left {
524 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
525 }
526 if event.position.x > right {
527 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
528 }
529
530 editor.select(
531 SelectPhase::Update {
532 position: point_for_position.previous_valid,
533 goal_column: point_for_position.exact_unclipped.column(),
534 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
535 .clamp(&gpui::Point::default(), &position_map.scroll_max),
536 },
537 cx,
538 );
539 }
540
541 fn mouse_moved(
542 editor: &mut Editor,
543 event: &MouseMoveEvent,
544 position_map: &PositionMap,
545 text_bounds: Bounds<Pixels>,
546 gutter_bounds: Bounds<Pixels>,
547 stacking_order: &StackingOrder,
548 cx: &mut ViewContext<Editor>,
549 ) {
550 let modifiers = event.modifiers;
551 let text_hovered = text_bounds.contains(&event.position);
552 let gutter_hovered = gutter_bounds.contains(&event.position);
553 let was_top = cx.was_top_layer(&event.position, stacking_order);
554
555 editor.set_gutter_hovered(gutter_hovered, cx);
556
557 // Don't trigger hover popover if mouse is hovering over context menu
558 if text_hovered && was_top {
559 let point_for_position = position_map.point_for_position(text_bounds, event.position);
560
561 match point_for_position.as_valid() {
562 Some(point) => {
563 update_go_to_definition_link(
564 editor,
565 Some(GoToDefinitionTrigger::Text(point)),
566 modifiers.command,
567 modifiers.shift,
568 cx,
569 );
570 hover_at(editor, Some(point), cx);
571 Self::update_visible_cursor(editor, point, cx);
572 }
573 None => {
574 update_inlay_link_and_hover_points(
575 &position_map.snapshot,
576 point_for_position,
577 editor,
578 modifiers.command,
579 modifiers.shift,
580 cx,
581 );
582 }
583 }
584 } else {
585 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
586 hover_at(editor, None, cx);
587 if gutter_hovered && was_top {
588 cx.stop_propagation();
589 }
590 }
591 }
592
593 fn update_visible_cursor(
594 editor: &mut Editor,
595 point: DisplayPoint,
596 cx: &mut ViewContext<Editor>,
597 ) {
598 let snapshot = editor.snapshot(cx);
599 let Some(hub) = editor.collaboration_hub() else {
600 return;
601 };
602 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
603 ..DisplayPoint::new(
604 point.row(),
605 (point.column() + 1).min(snapshot.line_len(point.row())),
606 );
607
608 let range = snapshot
609 .buffer_snapshot
610 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
611 ..snapshot
612 .buffer_snapshot
613 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
614
615 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
616 editor.hovered_cursor.take();
617 return;
618 };
619 editor.hovered_cursor.replace(crate::HoveredCursor {
620 replica_id: selection.replica_id,
621 selection_id: selection.selection.id,
622 });
623 cx.notify()
624 }
625
626 fn paint_background(
627 &self,
628 gutter_bounds: Bounds<Pixels>,
629 text_bounds: Bounds<Pixels>,
630 layout: &LayoutState,
631 cx: &mut WindowContext,
632 ) {
633 let bounds = gutter_bounds.union(&text_bounds);
634 let scroll_top =
635 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
636 let gutter_bg = cx.theme().colors().editor_gutter_background;
637 cx.paint_quad(fill(gutter_bounds, gutter_bg));
638 cx.paint_quad(fill(text_bounds, self.style.background));
639
640 if let EditorMode::Full = layout.mode {
641 let mut active_rows = layout.active_rows.iter().peekable();
642 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
643 let mut end_row = *start_row;
644 while active_rows.peek().map_or(false, |r| {
645 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
646 }) {
647 active_rows.next().unwrap();
648 end_row += 1;
649 }
650
651 if !contains_non_empty_selection {
652 let origin = point(
653 bounds.origin.x,
654 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
655 - scroll_top,
656 );
657 let size = size(
658 bounds.size.width,
659 layout.position_map.line_height * (end_row - start_row + 1) as f32,
660 );
661 let active_line_bg = cx.theme().colors().editor_active_line_background;
662 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
663 }
664 }
665
666 if let Some(highlighted_rows) = &layout.highlighted_rows {
667 let origin = point(
668 bounds.origin.x,
669 bounds.origin.y
670 + (layout.position_map.line_height * highlighted_rows.start as f32)
671 - scroll_top,
672 );
673 let size = size(
674 bounds.size.width,
675 layout.position_map.line_height * highlighted_rows.len() as f32,
676 );
677 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
678 cx.paint_quad(fill(Bounds { origin, size }, highlighted_line_bg));
679 }
680
681 let scroll_left =
682 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
683
684 for (wrap_position, active) in layout.wrap_guides.iter() {
685 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
686 - scroll_left;
687
688 if x < text_bounds.origin.x
689 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
690 {
691 continue;
692 }
693
694 let color = if *active {
695 cx.theme().colors().editor_active_wrap_guide
696 } else {
697 cx.theme().colors().editor_wrap_guide
698 };
699 cx.paint_quad(fill(
700 Bounds {
701 origin: point(x, text_bounds.origin.y),
702 size: size(px(1.), text_bounds.size.height),
703 },
704 color,
705 ));
706 }
707 }
708 }
709
710 fn paint_gutter(
711 &mut self,
712 bounds: Bounds<Pixels>,
713 layout: &mut LayoutState,
714 cx: &mut WindowContext,
715 ) {
716 let line_height = layout.position_map.line_height;
717
718 let scroll_position = layout.position_map.snapshot.scroll_position();
719 let scroll_top = scroll_position.y * line_height;
720
721 let show_gutter = matches!(
722 ProjectSettings::get_global(cx).git.git_gutter,
723 Some(GitGutterSetting::TrackedFiles)
724 );
725
726 if show_gutter {
727 Self::paint_diff_hunks(bounds, layout, cx);
728 }
729
730 for (ix, line) in layout.line_numbers.iter().enumerate() {
731 if let Some(line) = line {
732 let line_origin = bounds.origin
733 + point(
734 bounds.size.width - line.width - layout.gutter_padding,
735 ix as f32 * line_height - (scroll_top % line_height),
736 );
737
738 line.paint(line_origin, line_height, cx).log_err();
739 }
740 }
741
742 cx.with_z_index(1, |cx| {
743 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
744 if let Some(fold_indicator) = fold_indicator {
745 let mut fold_indicator = fold_indicator.into_any_element();
746 let available_space = size(
747 AvailableSpace::MinContent,
748 AvailableSpace::Definite(line_height * 0.55),
749 );
750 let fold_indicator_size = fold_indicator.measure(available_space, cx);
751
752 let position = point(
753 bounds.size.width - layout.gutter_padding,
754 ix as f32 * line_height - (scroll_top % line_height),
755 );
756 let centering_offset = point(
757 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width)
758 / 2.,
759 (line_height - fold_indicator_size.height) / 2.,
760 );
761 let origin = bounds.origin + position + centering_offset;
762 fold_indicator.draw(origin, available_space, cx);
763 }
764 }
765
766 if let Some(indicator) = layout.code_actions_indicator.take() {
767 let mut button = indicator.button.into_any_element();
768 let available_space = size(
769 AvailableSpace::MinContent,
770 AvailableSpace::Definite(line_height),
771 );
772 let indicator_size = button.measure(available_space, cx);
773
774 let mut x = Pixels::ZERO;
775 let mut y = indicator.row as f32 * line_height - scroll_top;
776 // Center indicator.
777 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
778 y += (line_height - indicator_size.height) / 2.;
779
780 button.draw(bounds.origin + point(x, y), available_space, cx);
781 }
782 });
783 }
784
785 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut WindowContext) {
786 let line_height = layout.position_map.line_height;
787
788 let scroll_position = layout.position_map.snapshot.scroll_position();
789 let scroll_top = scroll_position.y * line_height;
790
791 for hunk in &layout.display_hunks {
792 let (display_row_range, status) = match hunk {
793 //TODO: This rendering is entirely a horrible hack
794 &DisplayDiffHunk::Folded { display_row: row } => {
795 let start_y = row as f32 * line_height - scroll_top;
796 let end_y = start_y + line_height;
797
798 let width = 0.275 * line_height;
799 let highlight_origin = bounds.origin + point(-width, start_y);
800 let highlight_size = size(width * 2., end_y - start_y);
801 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
802 cx.paint_quad(quad(
803 highlight_bounds,
804 Corners::all(1. * line_height),
805 cx.theme().status().modified,
806 Edges::default(),
807 transparent_black(),
808 ));
809
810 continue;
811 }
812
813 DisplayDiffHunk::Unfolded {
814 display_row_range,
815 status,
816 } => (display_row_range, status),
817 };
818
819 let color = match status {
820 DiffHunkStatus::Added => cx.theme().status().created,
821 DiffHunkStatus::Modified => cx.theme().status().modified,
822
823 //TODO: This rendering is entirely a horrible hack
824 DiffHunkStatus::Removed => {
825 let row = display_row_range.start;
826
827 let offset = line_height / 2.;
828 let start_y = row as f32 * line_height - offset - scroll_top;
829 let end_y = start_y + line_height;
830
831 let width = 0.275 * line_height;
832 let highlight_origin = bounds.origin + point(-width, start_y);
833 let highlight_size = size(width * 2., end_y - start_y);
834 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
835 cx.paint_quad(quad(
836 highlight_bounds,
837 Corners::all(1. * line_height),
838 cx.theme().status().deleted,
839 Edges::default(),
840 transparent_black(),
841 ));
842
843 continue;
844 }
845 };
846
847 let start_row = display_row_range.start;
848 let end_row = display_row_range.end;
849 // If we're in a multibuffer, row range span might include an
850 // excerpt header, so if we were to draw the marker straight away,
851 // the hunk might include the rows of that header.
852 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
853 // Instead, we simply check whether the range we're dealing with includes
854 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
855 let end_row_in_current_excerpt = layout
856 .position_map
857 .snapshot
858 .blocks_in_range(start_row..end_row)
859 .find_map(|(start_row, block)| {
860 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
861 Some(start_row)
862 } else {
863 None
864 }
865 })
866 .unwrap_or(end_row);
867
868 let start_y = start_row as f32 * line_height - scroll_top;
869 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
870
871 let width = 0.275 * line_height;
872 let highlight_origin = bounds.origin + point(-width, start_y);
873 let highlight_size = size(width * 2., end_y - start_y);
874 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
875 cx.paint_quad(quad(
876 highlight_bounds,
877 Corners::all(0.05 * line_height),
878 color,
879 Edges::default(),
880 transparent_black(),
881 ));
882 }
883 }
884
885 fn paint_text(
886 &mut self,
887 text_bounds: Bounds<Pixels>,
888 layout: &mut LayoutState,
889 cx: &mut WindowContext,
890 ) {
891 let start_row = layout.visible_display_row_range.start;
892 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
893 let line_end_overshoot = 0.15 * layout.position_map.line_height;
894 let whitespace_setting = self
895 .editor
896 .read(cx)
897 .buffer
898 .read(cx)
899 .settings_at(0, cx)
900 .show_whitespaces;
901
902 cx.with_content_mask(
903 Some(ContentMask {
904 bounds: text_bounds,
905 }),
906 |cx| {
907 let interactive_text_bounds = InteractiveBounds {
908 bounds: text_bounds,
909 stacking_order: cx.stacking_order().clone(),
910 };
911 if interactive_text_bounds.visibly_contains(&cx.mouse_position(), cx) {
912 if self
913 .editor
914 .read(cx)
915 .link_go_to_definition_state
916 .definitions
917 .is_empty()
918 {
919 cx.set_cursor_style(CursorStyle::IBeam);
920 } else {
921 cx.set_cursor_style(CursorStyle::PointingHand);
922 }
923 }
924
925 let fold_corner_radius = 0.15 * layout.position_map.line_height;
926 cx.with_element_id(Some("folds"), |cx| {
927 let snapshot = &layout.position_map.snapshot;
928
929 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
930 let fold_range = fold.range.clone();
931 let display_range = fold.range.start.to_display_point(&snapshot)
932 ..fold.range.end.to_display_point(&snapshot);
933 debug_assert_eq!(display_range.start.row(), display_range.end.row());
934 let row = display_range.start.row();
935 debug_assert!(row < layout.visible_display_row_range.end);
936 let Some(line_layout) = &layout
937 .position_map
938 .line_layouts
939 .get((row - layout.visible_display_row_range.start) as usize)
940 .map(|l| &l.line)
941 else {
942 continue;
943 };
944
945 let start_x = content_origin.x
946 + line_layout.x_for_index(display_range.start.column() as usize)
947 - layout.position_map.scroll_position.x;
948 let start_y = content_origin.y
949 + row as f32 * layout.position_map.line_height
950 - layout.position_map.scroll_position.y;
951 let end_x = content_origin.x
952 + line_layout.x_for_index(display_range.end.column() as usize)
953 - layout.position_map.scroll_position.x;
954
955 let fold_bounds = Bounds {
956 origin: point(start_x, start_y),
957 size: size(end_x - start_x, layout.position_map.line_height),
958 };
959
960 let fold_background = cx.with_z_index(1, |cx| {
961 div()
962 .id(fold.id)
963 .size_full()
964 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
965 .on_click(cx.listener_for(
966 &self.editor,
967 move |editor: &mut Editor, _, cx| {
968 editor.unfold_ranges(
969 [fold_range.start..fold_range.end],
970 true,
971 false,
972 cx,
973 );
974 cx.stop_propagation();
975 },
976 ))
977 .draw_and_update_state(
978 fold_bounds.origin,
979 fold_bounds.size,
980 cx,
981 |fold_element_state, cx| {
982 if fold_element_state.is_active() {
983 cx.theme().colors().ghost_element_active
984 } else if fold_bounds.contains(&cx.mouse_position()) {
985 cx.theme().colors().ghost_element_hover
986 } else {
987 cx.theme().colors().ghost_element_background
988 }
989 },
990 )
991 });
992
993 self.paint_highlighted_range(
994 display_range.clone(),
995 fold_background,
996 fold_corner_radius,
997 fold_corner_radius * 2.,
998 layout,
999 content_origin,
1000 text_bounds,
1001 cx,
1002 );
1003 }
1004 });
1005
1006 for (range, color) in &layout.highlighted_ranges {
1007 self.paint_highlighted_range(
1008 range.clone(),
1009 *color,
1010 Pixels::ZERO,
1011 line_end_overshoot,
1012 layout,
1013 content_origin,
1014 text_bounds,
1015 cx,
1016 );
1017 }
1018
1019 let mut cursors = SmallVec::<[Cursor; 32]>::new();
1020 let corner_radius = 0.15 * layout.position_map.line_height;
1021 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
1022
1023 for (participant_ix, (selection_style, selections)) in
1024 layout.selections.iter().enumerate()
1025 {
1026 for selection in selections.into_iter() {
1027 self.paint_highlighted_range(
1028 selection.range.clone(),
1029 selection_style.selection,
1030 corner_radius,
1031 corner_radius * 2.,
1032 layout,
1033 content_origin,
1034 text_bounds,
1035 cx,
1036 );
1037
1038 if selection.is_local && !selection.range.is_empty() {
1039 invisible_display_ranges.push(selection.range.clone());
1040 }
1041
1042 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
1043 let cursor_position = selection.head;
1044 if layout
1045 .visible_display_row_range
1046 .contains(&cursor_position.row())
1047 {
1048 let cursor_row_layout = &layout.position_map.line_layouts
1049 [(cursor_position.row() - start_row) as usize]
1050 .line;
1051 let cursor_column = cursor_position.column() as usize;
1052
1053 let cursor_character_x =
1054 cursor_row_layout.x_for_index(cursor_column);
1055 let mut block_width = cursor_row_layout
1056 .x_for_index(cursor_column + 1)
1057 - cursor_character_x;
1058 if block_width == Pixels::ZERO {
1059 block_width = layout.position_map.em_width;
1060 }
1061 let block_text = if let CursorShape::Block = selection.cursor_shape
1062 {
1063 layout
1064 .position_map
1065 .snapshot
1066 .chars_at(cursor_position)
1067 .next()
1068 .and_then(|(character, _)| {
1069 let text = if character == '\n' {
1070 SharedString::from(" ")
1071 } else {
1072 SharedString::from(character.to_string())
1073 };
1074 let len = text.len();
1075 cx.text_system()
1076 .shape_line(
1077 text,
1078 cursor_row_layout.font_size,
1079 &[TextRun {
1080 len,
1081 font: self.style.text.font(),
1082 color: self.style.background,
1083 background_color: None,
1084 underline: None,
1085 }],
1086 )
1087 .log_err()
1088 })
1089 } else {
1090 None
1091 };
1092
1093 let x = cursor_character_x - layout.position_map.scroll_position.x;
1094 let y = cursor_position.row() as f32
1095 * layout.position_map.line_height
1096 - layout.position_map.scroll_position.y;
1097 if selection.is_newest {
1098 self.editor.update(cx, |editor, _| {
1099 editor.pixel_position_of_newest_cursor = Some(point(
1100 text_bounds.origin.x + x + block_width / 2.,
1101 text_bounds.origin.y
1102 + y
1103 + layout.position_map.line_height / 2.,
1104 ))
1105 });
1106 }
1107
1108 cursors.push(Cursor {
1109 color: selection_style.cursor,
1110 block_width,
1111 origin: point(x, y),
1112 line_height: layout.position_map.line_height,
1113 shape: selection.cursor_shape,
1114 block_text,
1115 cursor_name: selection.user_name.clone().map(|name| {
1116 CursorName {
1117 string: name,
1118 color: self.style.background,
1119 is_top_row: cursor_position.row() == 0,
1120 z_index: (participant_ix % 256).try_into().unwrap(),
1121 }
1122 }),
1123 });
1124 }
1125 }
1126 }
1127 }
1128
1129 for (ix, line_with_invisibles) in
1130 layout.position_map.line_layouts.iter().enumerate()
1131 {
1132 let row = start_row + ix as u32;
1133 line_with_invisibles.draw(
1134 layout,
1135 row,
1136 content_origin,
1137 whitespace_setting,
1138 &invisible_display_ranges,
1139 cx,
1140 )
1141 }
1142
1143 cx.with_z_index(0, |cx| {
1144 for cursor in cursors {
1145 cursor.paint(content_origin, cx);
1146 }
1147 });
1148 },
1149 )
1150 }
1151
1152 fn paint_overlays(
1153 &mut self,
1154 text_bounds: Bounds<Pixels>,
1155 layout: &mut LayoutState,
1156 cx: &mut WindowContext,
1157 ) {
1158 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
1159 let start_row = layout.visible_display_row_range.start;
1160 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1161 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1162 let context_menu_size = context_menu.measure(available_space, cx);
1163
1164 let cursor_row_layout =
1165 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1166 let x = cursor_row_layout.x_for_index(position.column() as usize)
1167 - layout.position_map.scroll_position.x;
1168 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1169 - layout.position_map.scroll_position.y;
1170 let mut list_origin = content_origin + point(x, y);
1171 let list_width = context_menu_size.width;
1172 let list_height = context_menu_size.height;
1173
1174 // Snap the right edge of the list to the right edge of the window if
1175 // its horizontal bounds overflow.
1176 if list_origin.x + list_width > cx.viewport_size().width {
1177 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1178 }
1179
1180 if list_origin.y + list_height > text_bounds.lower_right().y {
1181 list_origin.y -= layout.position_map.line_height + list_height;
1182 }
1183
1184 cx.break_content_mask(|cx| context_menu.draw(list_origin, available_space, cx));
1185 }
1186
1187 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1188 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1189
1190 // This is safe because we check on layout whether the required row is available
1191 let hovered_row_layout =
1192 &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1193
1194 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1195 // height. This is the size we will use to decide whether to render popovers above or below
1196 // the hovered line.
1197 let first_size = hover_popovers[0].measure(available_space, cx);
1198 let height_to_reserve =
1199 first_size.height + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1200
1201 // Compute Hovered Point
1202 let x = hovered_row_layout.x_for_index(position.column() as usize)
1203 - layout.position_map.scroll_position.x;
1204 let y = position.row() as f32 * layout.position_map.line_height
1205 - layout.position_map.scroll_position.y;
1206 let hovered_point = content_origin + point(x, y);
1207
1208 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1209 // There is enough space above. Render popovers above the hovered point
1210 let mut current_y = hovered_point.y;
1211 for mut hover_popover in hover_popovers {
1212 let size = hover_popover.measure(available_space, cx);
1213 let mut popover_origin = point(hovered_point.x, current_y - size.height);
1214
1215 let x_out_of_bounds =
1216 text_bounds.upper_right().x - (popover_origin.x + size.width);
1217 if x_out_of_bounds < Pixels::ZERO {
1218 popover_origin.x = popover_origin.x + x_out_of_bounds;
1219 }
1220
1221 cx.break_content_mask(|cx| {
1222 hover_popover.draw(popover_origin, available_space, cx)
1223 });
1224
1225 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1226 }
1227 } else {
1228 // There is not enough space above. Render popovers below the hovered point
1229 let mut current_y = hovered_point.y + layout.position_map.line_height;
1230 for mut hover_popover in hover_popovers {
1231 let size = hover_popover.measure(available_space, cx);
1232 let mut popover_origin = point(hovered_point.x, current_y);
1233
1234 let x_out_of_bounds =
1235 text_bounds.upper_right().x - (popover_origin.x + size.width);
1236 if x_out_of_bounds < Pixels::ZERO {
1237 popover_origin.x = popover_origin.x + x_out_of_bounds;
1238 }
1239
1240 hover_popover.draw(popover_origin, available_space, cx);
1241
1242 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1243 }
1244 }
1245 }
1246
1247 if let Some(mouse_context_menu) = self.editor.read(cx).mouse_context_menu.as_ref() {
1248 let element = overlay()
1249 .position(mouse_context_menu.position)
1250 .child(mouse_context_menu.context_menu.clone())
1251 .anchor(AnchorCorner::TopLeft)
1252 .snap_to_window();
1253 element.into_any().draw(
1254 gpui::Point::default(),
1255 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1256 cx,
1257 );
1258 }
1259 }
1260
1261 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1262 bounds.upper_right().x - self.style.scrollbar_width
1263 }
1264
1265 fn paint_scrollbar(
1266 &mut self,
1267 bounds: Bounds<Pixels>,
1268 layout: &mut LayoutState,
1269 cx: &mut WindowContext,
1270 ) {
1271 if layout.mode != EditorMode::Full {
1272 return;
1273 }
1274
1275 // If a drag took place after we started dragging the scrollbar,
1276 // cancel the scrollbar drag.
1277 if cx.has_active_drag() {
1278 self.editor.update(cx, |editor, cx| {
1279 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1280 });
1281 }
1282
1283 let top = bounds.origin.y;
1284 let bottom = bounds.lower_left().y;
1285 let right = bounds.lower_right().x;
1286 let left = self.scrollbar_left(&bounds);
1287 let row_range = layout.scrollbar_row_range.clone();
1288 let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1289
1290 let mut height = bounds.size.height;
1291 let mut first_row_y_offset = px(0.0);
1292
1293 // Impose a minimum height on the scrollbar thumb
1294 let row_height = height / max_row;
1295 let min_thumb_height = layout.position_map.line_height;
1296 let thumb_height = (row_range.end - row_range.start) * row_height;
1297 if thumb_height < min_thumb_height {
1298 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1299 height -= min_thumb_height - thumb_height;
1300 }
1301
1302 let y_for_row = |row: f32| -> Pixels { top + first_row_y_offset + row * row_height };
1303
1304 let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1305 let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1306 let track_bounds = Bounds::from_corners(point(left, top), point(right, bottom));
1307 let thumb_bounds = Bounds::from_corners(point(left, thumb_top), point(right, thumb_bottom));
1308
1309 if layout.show_scrollbars {
1310 cx.paint_quad(quad(
1311 track_bounds,
1312 Corners::default(),
1313 cx.theme().colors().scrollbar_track_background,
1314 Edges {
1315 top: Pixels::ZERO,
1316 right: Pixels::ZERO,
1317 bottom: Pixels::ZERO,
1318 left: px(1.),
1319 },
1320 cx.theme().colors().scrollbar_track_border,
1321 ));
1322 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1323 if layout.is_singleton && scrollbar_settings.selections {
1324 let start_anchor = Anchor::min();
1325 let end_anchor = Anchor::max();
1326 let background_ranges = self
1327 .editor
1328 .read(cx)
1329 .background_highlight_row_ranges::<BufferSearchHighlights>(
1330 start_anchor..end_anchor,
1331 &layout.position_map.snapshot,
1332 50000,
1333 );
1334 for range in background_ranges {
1335 let start_y = y_for_row(range.start().row() as f32);
1336 let mut end_y = y_for_row(range.end().row() as f32);
1337 if end_y - start_y < px(1.) {
1338 end_y = start_y + px(1.);
1339 }
1340 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1341 cx.paint_quad(quad(
1342 bounds,
1343 Corners::default(),
1344 cx.theme().status().info,
1345 Edges {
1346 top: Pixels::ZERO,
1347 right: px(1.),
1348 bottom: Pixels::ZERO,
1349 left: px(1.),
1350 },
1351 cx.theme().colors().scrollbar_thumb_border,
1352 ));
1353 }
1354 }
1355
1356 if layout.is_singleton && scrollbar_settings.git_diff {
1357 for hunk in layout
1358 .position_map
1359 .snapshot
1360 .buffer_snapshot
1361 .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1362 {
1363 let start_display = Point::new(hunk.buffer_range.start, 0)
1364 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1365 let end_display = Point::new(hunk.buffer_range.end, 0)
1366 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1367 let start_y = y_for_row(start_display.row() as f32);
1368 let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1369 y_for_row((end_display.row() + 1) as f32)
1370 } else {
1371 y_for_row((end_display.row()) as f32)
1372 };
1373
1374 if end_y - start_y < px(1.) {
1375 end_y = start_y + px(1.);
1376 }
1377 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1378
1379 let color = match hunk.status() {
1380 DiffHunkStatus::Added => cx.theme().status().created,
1381 DiffHunkStatus::Modified => cx.theme().status().modified,
1382 DiffHunkStatus::Removed => cx.theme().status().deleted,
1383 };
1384 cx.paint_quad(quad(
1385 bounds,
1386 Corners::default(),
1387 color,
1388 Edges {
1389 top: Pixels::ZERO,
1390 right: px(1.),
1391 bottom: Pixels::ZERO,
1392 left: px(1.),
1393 },
1394 cx.theme().colors().scrollbar_thumb_border,
1395 ));
1396 }
1397 }
1398
1399 cx.paint_quad(quad(
1400 thumb_bounds,
1401 Corners::default(),
1402 cx.theme().colors().scrollbar_thumb_background,
1403 Edges {
1404 top: Pixels::ZERO,
1405 right: px(1.),
1406 bottom: Pixels::ZERO,
1407 left: px(1.),
1408 },
1409 cx.theme().colors().scrollbar_thumb_border,
1410 ));
1411 }
1412
1413 let interactive_track_bounds = InteractiveBounds {
1414 bounds: track_bounds,
1415 stacking_order: cx.stacking_order().clone(),
1416 };
1417 let mut mouse_position = cx.mouse_position();
1418 if interactive_track_bounds.visibly_contains(&mouse_position, cx) {
1419 cx.set_cursor_style(CursorStyle::Arrow);
1420 }
1421
1422 cx.on_mouse_event({
1423 let editor = self.editor.clone();
1424 move |event: &MouseMoveEvent, phase, cx| {
1425 if phase == DispatchPhase::Capture {
1426 return;
1427 }
1428
1429 editor.update(cx, |editor, cx| {
1430 if event.pressed_button == Some(MouseButton::Left)
1431 && editor.scroll_manager.is_dragging_scrollbar()
1432 {
1433 let y = mouse_position.y;
1434 let new_y = event.position.y;
1435 if (track_bounds.top()..track_bounds.bottom()).contains(&y) {
1436 let mut position = editor.scroll_position(cx);
1437 position.y += (new_y - y) * (max_row as f32) / height;
1438 if position.y < 0.0 {
1439 position.y = 0.0;
1440 }
1441 editor.set_scroll_position(position, cx);
1442 }
1443
1444 mouse_position = event.position;
1445 cx.stop_propagation();
1446 } else {
1447 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1448 if interactive_track_bounds.visibly_contains(&event.position, cx) {
1449 editor.scroll_manager.show_scrollbar(cx);
1450 }
1451 }
1452 })
1453 }
1454 });
1455
1456 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
1457 cx.on_mouse_event({
1458 let editor = self.editor.clone();
1459 move |_: &MouseUpEvent, phase, cx| {
1460 if phase == DispatchPhase::Capture {
1461 return;
1462 }
1463
1464 editor.update(cx, |editor, cx| {
1465 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1466 cx.stop_propagation();
1467 });
1468 }
1469 });
1470 } else {
1471 cx.on_mouse_event({
1472 let editor = self.editor.clone();
1473 move |event: &MouseDownEvent, phase, cx| {
1474 if phase == DispatchPhase::Capture {
1475 return;
1476 }
1477
1478 editor.update(cx, |editor, cx| {
1479 if track_bounds.contains(&event.position) {
1480 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
1481
1482 let y = event.position.y;
1483 if y < thumb_top || thumb_bottom < y {
1484 let center_row =
1485 ((y - top) * max_row as f32 / height).round() as u32;
1486 let top_row = center_row
1487 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1488 let mut position = editor.scroll_position(cx);
1489 position.y = top_row as f32;
1490 editor.set_scroll_position(position, cx);
1491 } else {
1492 editor.scroll_manager.show_scrollbar(cx);
1493 }
1494
1495 cx.stop_propagation();
1496 }
1497 });
1498 }
1499 });
1500 }
1501 }
1502
1503 #[allow(clippy::too_many_arguments)]
1504 fn paint_highlighted_range(
1505 &self,
1506 range: Range<DisplayPoint>,
1507 color: Hsla,
1508 corner_radius: Pixels,
1509 line_end_overshoot: Pixels,
1510 layout: &LayoutState,
1511 content_origin: gpui::Point<Pixels>,
1512 bounds: Bounds<Pixels>,
1513 cx: &mut WindowContext,
1514 ) {
1515 let start_row = layout.visible_display_row_range.start;
1516 let end_row = layout.visible_display_row_range.end;
1517 if range.start != range.end {
1518 let row_range = if range.end.column() == 0 {
1519 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1520 } else {
1521 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1522 };
1523
1524 let highlighted_range = HighlightedRange {
1525 color,
1526 line_height: layout.position_map.line_height,
1527 corner_radius,
1528 start_y: content_origin.y
1529 + row_range.start as f32 * layout.position_map.line_height
1530 - layout.position_map.scroll_position.y,
1531 lines: row_range
1532 .into_iter()
1533 .map(|row| {
1534 let line_layout =
1535 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1536 HighlightedRangeLine {
1537 start_x: if row == range.start.row() {
1538 content_origin.x
1539 + line_layout.x_for_index(range.start.column() as usize)
1540 - layout.position_map.scroll_position.x
1541 } else {
1542 content_origin.x - layout.position_map.scroll_position.x
1543 },
1544 end_x: if row == range.end.row() {
1545 content_origin.x
1546 + line_layout.x_for_index(range.end.column() as usize)
1547 - layout.position_map.scroll_position.x
1548 } else {
1549 content_origin.x + line_layout.width + line_end_overshoot
1550 - layout.position_map.scroll_position.x
1551 },
1552 }
1553 })
1554 .collect(),
1555 };
1556
1557 highlighted_range.paint(bounds, cx);
1558 }
1559 }
1560
1561 fn paint_blocks(
1562 &mut self,
1563 bounds: Bounds<Pixels>,
1564 layout: &mut LayoutState,
1565 cx: &mut WindowContext,
1566 ) {
1567 let scroll_position = layout.position_map.snapshot.scroll_position();
1568 let scroll_left = scroll_position.x * layout.position_map.em_width;
1569 let scroll_top = scroll_position.y * layout.position_map.line_height;
1570
1571 for mut block in layout.blocks.drain(..) {
1572 let mut origin = bounds.origin
1573 + point(
1574 Pixels::ZERO,
1575 block.row as f32 * layout.position_map.line_height - scroll_top,
1576 );
1577 if !matches!(block.style, BlockStyle::Sticky) {
1578 origin += point(-scroll_left, Pixels::ZERO);
1579 }
1580 block.element.draw(origin, block.available_space, cx);
1581 }
1582 }
1583
1584 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1585 let style = &self.style;
1586 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1587 let layout = cx
1588 .text_system()
1589 .shape_line(
1590 SharedString::from(" ".repeat(column)),
1591 font_size,
1592 &[TextRun {
1593 len: column,
1594 font: style.text.font(),
1595 color: Hsla::default(),
1596 background_color: None,
1597 underline: None,
1598 }],
1599 )
1600 .unwrap();
1601
1602 layout.width
1603 }
1604
1605 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1606 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1607 self.column_pixels(digit_count, cx)
1608 }
1609
1610 //Folds contained in a hunk are ignored apart from shrinking visual size
1611 //If a fold contains any hunks then that fold line is marked as modified
1612 fn layout_git_gutters(
1613 &self,
1614 display_rows: Range<u32>,
1615 snapshot: &EditorSnapshot,
1616 ) -> Vec<DisplayDiffHunk> {
1617 let buffer_snapshot = &snapshot.buffer_snapshot;
1618
1619 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1620 .to_point(snapshot)
1621 .row;
1622 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1623 .to_point(snapshot)
1624 .row;
1625
1626 buffer_snapshot
1627 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1628 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1629 .dedup()
1630 .collect()
1631 }
1632
1633 fn calculate_relative_line_numbers(
1634 &self,
1635 snapshot: &EditorSnapshot,
1636 rows: &Range<u32>,
1637 relative_to: Option<u32>,
1638 ) -> HashMap<u32, u32> {
1639 let mut relative_rows: HashMap<u32, u32> = Default::default();
1640 let Some(relative_to) = relative_to else {
1641 return relative_rows;
1642 };
1643
1644 let start = rows.start.min(relative_to);
1645 let end = rows.end.max(relative_to);
1646
1647 let buffer_rows = snapshot
1648 .buffer_rows(start)
1649 .take(1 + (end - start) as usize)
1650 .collect::<Vec<_>>();
1651
1652 let head_idx = relative_to - start;
1653 let mut delta = 1;
1654 let mut i = head_idx + 1;
1655 while i < buffer_rows.len() as u32 {
1656 if buffer_rows[i as usize].is_some() {
1657 if rows.contains(&(i + start)) {
1658 relative_rows.insert(i + start, delta);
1659 }
1660 delta += 1;
1661 }
1662 i += 1;
1663 }
1664 delta = 1;
1665 i = head_idx.min(buffer_rows.len() as u32 - 1);
1666 while i > 0 && buffer_rows[i as usize].is_none() {
1667 i -= 1;
1668 }
1669
1670 while i > 0 {
1671 i -= 1;
1672 if buffer_rows[i as usize].is_some() {
1673 if rows.contains(&(i + start)) {
1674 relative_rows.insert(i + start, delta);
1675 }
1676 delta += 1;
1677 }
1678 }
1679
1680 relative_rows
1681 }
1682
1683 fn shape_line_numbers(
1684 &self,
1685 rows: Range<u32>,
1686 active_rows: &BTreeMap<u32, bool>,
1687 newest_selection_head: DisplayPoint,
1688 is_singleton: bool,
1689 snapshot: &EditorSnapshot,
1690 cx: &ViewContext<Editor>,
1691 ) -> (
1692 Vec<Option<ShapedLine>>,
1693 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1694 ) {
1695 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1696 let include_line_numbers = snapshot.mode == EditorMode::Full;
1697 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1698 let mut fold_statuses = Vec::with_capacity(rows.len());
1699 let mut line_number = String::new();
1700 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1701 let relative_to = if is_relative {
1702 Some(newest_selection_head.row())
1703 } else {
1704 None
1705 };
1706
1707 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1708
1709 for (ix, row) in snapshot
1710 .buffer_rows(rows.start)
1711 .take((rows.end - rows.start) as usize)
1712 .enumerate()
1713 {
1714 let display_row = rows.start + ix as u32;
1715 let (active, color) = if active_rows.contains_key(&display_row) {
1716 (true, cx.theme().colors().editor_active_line_number)
1717 } else {
1718 (false, cx.theme().colors().editor_line_number)
1719 };
1720 if let Some(buffer_row) = row {
1721 if include_line_numbers {
1722 line_number.clear();
1723 let default_number = buffer_row + 1;
1724 let number = relative_rows
1725 .get(&(ix as u32 + rows.start))
1726 .unwrap_or(&default_number);
1727 write!(&mut line_number, "{}", number).unwrap();
1728 let run = TextRun {
1729 len: line_number.len(),
1730 font: self.style.text.font(),
1731 color,
1732 background_color: None,
1733 underline: None,
1734 };
1735 let shaped_line = cx
1736 .text_system()
1737 .shape_line(line_number.clone().into(), font_size, &[run])
1738 .unwrap();
1739 shaped_line_numbers.push(Some(shaped_line));
1740 fold_statuses.push(
1741 is_singleton
1742 .then(|| {
1743 snapshot
1744 .fold_for_line(buffer_row)
1745 .map(|fold_status| (fold_status, buffer_row, active))
1746 })
1747 .flatten(),
1748 )
1749 }
1750 } else {
1751 fold_statuses.push(None);
1752 shaped_line_numbers.push(None);
1753 }
1754 }
1755
1756 (shaped_line_numbers, fold_statuses)
1757 }
1758
1759 fn layout_lines(
1760 &self,
1761 rows: Range<u32>,
1762 line_number_layouts: &[Option<ShapedLine>],
1763 snapshot: &EditorSnapshot,
1764 cx: &ViewContext<Editor>,
1765 ) -> Vec<LineWithInvisibles> {
1766 if rows.start >= rows.end {
1767 return Vec::new();
1768 }
1769
1770 // Show the placeholder when the editor is empty
1771 if snapshot.is_empty() {
1772 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1773 let placeholder_color = cx.theme().colors().text_placeholder;
1774 let placeholder_text = snapshot.placeholder_text();
1775
1776 let placeholder_lines = placeholder_text
1777 .as_ref()
1778 .map_or("", AsRef::as_ref)
1779 .split('\n')
1780 .skip(rows.start as usize)
1781 .chain(iter::repeat(""))
1782 .take(rows.len());
1783 placeholder_lines
1784 .filter_map(move |line| {
1785 let run = TextRun {
1786 len: line.len(),
1787 font: self.style.text.font(),
1788 color: placeholder_color,
1789 background_color: None,
1790 underline: Default::default(),
1791 };
1792 cx.text_system()
1793 .shape_line(line.to_string().into(), font_size, &[run])
1794 .log_err()
1795 })
1796 .map(|line| LineWithInvisibles {
1797 line,
1798 invisibles: Vec::new(),
1799 })
1800 .collect()
1801 } else {
1802 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1803 LineWithInvisibles::from_chunks(
1804 chunks,
1805 &self.style.text,
1806 MAX_LINE_LEN,
1807 rows.len() as usize,
1808 line_number_layouts,
1809 snapshot.mode,
1810 cx,
1811 )
1812 }
1813 }
1814
1815 fn compute_layout(&mut self, bounds: Bounds<Pixels>, cx: &mut WindowContext) -> LayoutState {
1816 self.editor.update(cx, |editor, cx| {
1817 let snapshot = editor.snapshot(cx);
1818 let style = self.style.clone();
1819
1820 let font_id = cx.text_system().resolve_font(&style.text.font());
1821 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1822 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1823 let em_width = cx
1824 .text_system()
1825 .typographic_bounds(font_id, font_size, 'm')
1826 .unwrap()
1827 .size
1828 .width;
1829 let em_advance = cx
1830 .text_system()
1831 .advance(font_id, font_size, 'm')
1832 .unwrap()
1833 .width;
1834
1835 let gutter_padding;
1836 let gutter_width;
1837 let gutter_margin;
1838 if snapshot.show_gutter {
1839 let descent = cx.text_system().descent(font_id, font_size);
1840
1841 let gutter_padding_factor = 3.5;
1842 // Avoid flicker-like gutter resizes when the line number gains another digit and only resize the gutter on files with N*10^5 lines.
1843 let min_width_for_number_on_gutter = em_width * 4.0;
1844 gutter_padding = (em_width * gutter_padding_factor).round();
1845 gutter_width = self.max_line_number_width(&snapshot, cx).max(min_width_for_number_on_gutter) + gutter_padding * 2.0;
1846 gutter_margin = -descent;
1847 } else {
1848 gutter_padding = Pixels::ZERO;
1849 gutter_width = Pixels::ZERO;
1850 gutter_margin = Pixels::ZERO;
1851 };
1852
1853 editor.gutter_width = gutter_width;
1854
1855 let text_width = bounds.size.width - gutter_width;
1856 let overscroll = size(em_width, px(0.));
1857 let _snapshot = {
1858 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1859
1860 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1861 let wrap_width = match editor.soft_wrap_mode(cx) {
1862 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1863 SoftWrap::EditorWidth => editor_width,
1864 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1865 };
1866
1867 if editor.set_wrap_width(Some(wrap_width), cx) {
1868 editor.snapshot(cx)
1869 } else {
1870 snapshot
1871 }
1872 };
1873
1874 let wrap_guides = editor
1875 .wrap_guides(cx)
1876 .iter()
1877 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1878 .collect::<SmallVec<[_; 2]>>();
1879
1880 let gutter_size = size(gutter_width, bounds.size.height);
1881 let text_size = size(text_width, bounds.size.height);
1882
1883 let autoscroll_horizontally =
1884 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1885 let mut snapshot = editor.snapshot(cx);
1886
1887 let scroll_position = snapshot.scroll_position();
1888 // The scroll position is a fractional point, the whole number of which represents
1889 // the top of the window in terms of display rows.
1890 let start_row = scroll_position.y as u32;
1891 let height_in_lines = f32::from(bounds.size.height / line_height);
1892 let max_row = snapshot.max_point().row();
1893
1894 // Add 1 to ensure selections bleed off screen
1895 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1896
1897 let start_anchor = if start_row == 0 {
1898 Anchor::min()
1899 } else {
1900 snapshot
1901 .buffer_snapshot
1902 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1903 };
1904 let end_anchor = if end_row > max_row {
1905 Anchor::max()
1906 } else {
1907 snapshot
1908 .buffer_snapshot
1909 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1910 };
1911
1912 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1913 let mut active_rows = BTreeMap::new();
1914 let is_singleton = editor.is_singleton(cx);
1915
1916 let highlighted_rows = editor.highlighted_rows();
1917 let highlighted_ranges = editor.background_highlights_in_range(
1918 start_anchor..end_anchor,
1919 &snapshot.display_snapshot,
1920 cx.theme().colors(),
1921 );
1922
1923 let mut newest_selection_head = None;
1924
1925 if editor.show_local_selections {
1926 let mut local_selections: Vec<Selection<Point>> = editor
1927 .selections
1928 .disjoint_in_range(start_anchor..end_anchor, cx);
1929 local_selections.extend(editor.selections.pending(cx));
1930 let mut layouts = Vec::new();
1931 let newest = editor.selections.newest(cx);
1932 for selection in local_selections.drain(..) {
1933 let is_empty = selection.start == selection.end;
1934 let is_newest = selection == newest;
1935
1936 let layout = SelectionLayout::new(
1937 selection,
1938 editor.selections.line_mode,
1939 editor.cursor_shape,
1940 &snapshot.display_snapshot,
1941 is_newest,
1942 true,
1943 None,
1944 );
1945 if is_newest {
1946 newest_selection_head = Some(layout.head);
1947 }
1948
1949 for row in cmp::max(layout.active_rows.start, start_row)
1950 ..=cmp::min(layout.active_rows.end, end_row)
1951 {
1952 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1953 *contains_non_empty_selection |= !is_empty;
1954 }
1955 layouts.push(layout);
1956 }
1957
1958 let player = if editor.read_only(cx) {
1959 cx.theme().players().read_only()
1960 } else {
1961 style.local_player
1962 };
1963
1964 selections.push((player, layouts));
1965 }
1966
1967 if let Some(collaboration_hub) = &editor.collaboration_hub {
1968 // When following someone, render the local selections in their color.
1969 if let Some(leader_id) = editor.leader_peer_id {
1970 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1971 if let Some(participant_index) = collaboration_hub
1972 .user_participant_indices(cx)
1973 .get(&collaborator.user_id)
1974 {
1975 if let Some((local_selection_style, _)) = selections.first_mut() {
1976 *local_selection_style = cx
1977 .theme()
1978 .players()
1979 .color_for_participant(participant_index.0);
1980 }
1981 }
1982 }
1983 }
1984
1985 let mut remote_selections = HashMap::default();
1986 for selection in snapshot.remote_selections_in_range(
1987 &(start_anchor..end_anchor),
1988 collaboration_hub.as_ref(),
1989 cx,
1990 ) {
1991 let selection_style = if let Some(participant_index) = selection.participant_index {
1992 cx.theme()
1993 .players()
1994 .color_for_participant(participant_index.0)
1995 } else {
1996 cx.theme().players().absent()
1997 };
1998
1999 // Don't re-render the leader's selections, since the local selections
2000 // match theirs.
2001 if Some(selection.peer_id) == editor.leader_peer_id {
2002 continue;
2003 }
2004 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);
2005
2006 remote_selections
2007 .entry(selection.replica_id)
2008 .or_insert((selection_style, Vec::new()))
2009 .1
2010 .push(SelectionLayout::new(
2011 selection.selection,
2012 selection.line_mode,
2013 selection.cursor_shape,
2014 &snapshot.display_snapshot,
2015 false,
2016 false,
2017 if is_shown {
2018 selection.user_name
2019 } else {
2020 None
2021 },
2022 ));
2023 }
2024
2025 selections.extend(remote_selections.into_values());
2026 }
2027
2028 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2029 let show_scrollbars = match scrollbar_settings.show {
2030 ShowScrollbar::Auto => {
2031 // Git
2032 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2033 ||
2034 // Selections
2035 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
2036 // Scrollmanager
2037 || editor.scroll_manager.scrollbars_visible()
2038 }
2039 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2040 ShowScrollbar::Always => true,
2041 ShowScrollbar::Never => false,
2042 };
2043
2044 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2045 let newest = editor.selections.newest::<Point>(cx);
2046 SelectionLayout::new(
2047 newest,
2048 editor.selections.line_mode,
2049 editor.cursor_shape,
2050 &snapshot.display_snapshot,
2051 true,
2052 true,
2053 None,
2054 )
2055 .head
2056 });
2057
2058 let (line_numbers, fold_statuses) = self.shape_line_numbers(
2059 start_row..end_row,
2060 &active_rows,
2061 head_for_relative,
2062 is_singleton,
2063 &snapshot,
2064 cx,
2065 );
2066
2067 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2068
2069 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2070
2071 let mut max_visible_line_width = Pixels::ZERO;
2072 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
2073 for line_with_invisibles in &line_layouts {
2074 if line_with_invisibles.line.width > max_visible_line_width {
2075 max_visible_line_width = line_with_invisibles.line.width;
2076 }
2077 }
2078
2079 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
2080 .unwrap()
2081 .width;
2082 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
2083
2084 let (scroll_width, blocks) = cx.with_element_id(Some("editor_blocks"), |cx| {
2085 self.layout_blocks(
2086 start_row..end_row,
2087 &snapshot,
2088 bounds.size.width,
2089 scroll_width,
2090 gutter_padding,
2091 gutter_width,
2092 em_width,
2093 gutter_width + gutter_margin,
2094 line_height,
2095 &style,
2096 &line_layouts,
2097 editor,
2098 cx,
2099 )
2100 });
2101
2102 let scroll_max = point(
2103 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
2104 max_row as f32,
2105 );
2106
2107 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2108
2109 let autoscrolled = if autoscroll_horizontally {
2110 editor.autoscroll_horizontally(
2111 start_row,
2112 text_size.width,
2113 scroll_width,
2114 em_width,
2115 &line_layouts,
2116 cx,
2117 )
2118 } else {
2119 false
2120 };
2121
2122 if clamped || autoscrolled {
2123 snapshot = editor.snapshot(cx);
2124 }
2125
2126 let mut context_menu = None;
2127 let mut code_actions_indicator = None;
2128 if let Some(newest_selection_head) = newest_selection_head {
2129 if (start_row..end_row).contains(&newest_selection_head.row()) {
2130 if editor.context_menu_visible() {
2131 let max_height = (12. * line_height).min((bounds.size.height - line_height) / 2.);
2132 context_menu =
2133 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2134 }
2135
2136 let active = matches!(
2137 editor.context_menu.read().as_ref(),
2138 Some(crate::ContextMenu::CodeActions(_))
2139 );
2140
2141 code_actions_indicator = editor
2142 .render_code_actions_indicator(&style, active, cx)
2143 .map(|element| CodeActionsIndicator {
2144 row: newest_selection_head.row(),
2145 button: element,
2146 });
2147 }
2148 }
2149
2150 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2151 let max_size = size(
2152 (120. * em_width) // Default size
2153 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2154 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2155 (16. * line_height) // Default size
2156 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2157 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2158 );
2159
2160 let hover = editor.hover_state.render(
2161 &snapshot,
2162 &style,
2163 visible_rows,
2164 max_size,
2165 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2166 cx,
2167 );
2168
2169 let fold_indicators = cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2170 editor.render_fold_indicators(
2171 fold_statuses,
2172 &style,
2173 editor.gutter_hovered,
2174 line_height,
2175 gutter_margin,
2176 cx,
2177 )
2178 });
2179
2180 let invisible_symbol_font_size = font_size / 2.;
2181 let tab_invisible = cx
2182 .text_system()
2183 .shape_line(
2184 "→".into(),
2185 invisible_symbol_font_size,
2186 &[TextRun {
2187 len: "→".len(),
2188 font: self.style.text.font(),
2189 color: cx.theme().colors().editor_invisible,
2190 background_color: None,
2191 underline: None,
2192 }],
2193 )
2194 .unwrap();
2195 let space_invisible = cx
2196 .text_system()
2197 .shape_line(
2198 "•".into(),
2199 invisible_symbol_font_size,
2200 &[TextRun {
2201 len: "•".len(),
2202 font: self.style.text.font(),
2203 color: cx.theme().colors().editor_invisible,
2204 background_color: None,
2205 underline: None,
2206 }],
2207 )
2208 .unwrap();
2209
2210 LayoutState {
2211 mode: snapshot.mode,
2212 position_map: Arc::new(PositionMap {
2213 size: bounds.size,
2214 scroll_position: point(
2215 scroll_position.x * em_width,
2216 scroll_position.y * line_height,
2217 ),
2218 scroll_max,
2219 line_layouts,
2220 line_height,
2221 em_width,
2222 em_advance,
2223 snapshot,
2224 }),
2225 visible_anchor_range: start_anchor..end_anchor,
2226 visible_display_row_range: start_row..end_row,
2227 wrap_guides,
2228 gutter_size,
2229 gutter_padding,
2230 text_size,
2231 scrollbar_row_range,
2232 show_scrollbars,
2233 is_singleton,
2234 max_row,
2235 gutter_margin,
2236 active_rows,
2237 highlighted_rows,
2238 highlighted_ranges,
2239 line_numbers,
2240 display_hunks,
2241 blocks,
2242 selections,
2243 context_menu,
2244 code_actions_indicator,
2245 fold_indicators,
2246 tab_invisible,
2247 space_invisible,
2248 hover_popovers: hover,
2249 }
2250 })
2251 }
2252
2253 #[allow(clippy::too_many_arguments)]
2254 fn layout_blocks(
2255 &self,
2256 rows: Range<u32>,
2257 snapshot: &EditorSnapshot,
2258 editor_width: Pixels,
2259 scroll_width: Pixels,
2260 gutter_padding: Pixels,
2261 gutter_width: Pixels,
2262 em_width: Pixels,
2263 text_x: Pixels,
2264 line_height: Pixels,
2265 style: &EditorStyle,
2266 line_layouts: &[LineWithInvisibles],
2267 editor: &mut Editor,
2268 cx: &mut ViewContext<Editor>,
2269 ) -> (Pixels, Vec<BlockLayout>) {
2270 let mut block_id = 0;
2271 let (fixed_blocks, non_fixed_blocks) = snapshot
2272 .blocks_in_range(rows.clone())
2273 .partition::<Vec<_>, _>(|(_, block)| match block {
2274 TransformBlock::ExcerptHeader { .. } => false,
2275 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2276 });
2277
2278 let render_block = |block: &TransformBlock,
2279 available_space: Size<AvailableSpace>,
2280 block_id: usize,
2281 editor: &mut Editor,
2282 cx: &mut ViewContext<Editor>| {
2283 let mut element = match block {
2284 TransformBlock::Custom(block) => {
2285 let align_to = block
2286 .position()
2287 .to_point(&snapshot.buffer_snapshot)
2288 .to_display_point(snapshot);
2289 let anchor_x = text_x
2290 + if rows.contains(&align_to.row()) {
2291 line_layouts[(align_to.row() - rows.start) as usize]
2292 .line
2293 .x_for_index(align_to.column() as usize)
2294 } else {
2295 layout_line(align_to.row(), snapshot, style, cx)
2296 .unwrap()
2297 .x_for_index(align_to.column() as usize)
2298 };
2299
2300 block.render(&mut BlockContext {
2301 view_context: cx,
2302 anchor_x,
2303 gutter_padding,
2304 line_height,
2305 gutter_width,
2306 em_width,
2307 block_id,
2308 editor_style: &self.style,
2309 })
2310 }
2311
2312 TransformBlock::ExcerptHeader {
2313 buffer,
2314 range,
2315 starts_new_buffer,
2316 ..
2317 } => {
2318 let include_root = editor
2319 .project
2320 .as_ref()
2321 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2322 .unwrap_or_default();
2323
2324 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2325 let jump_path = ProjectPath {
2326 worktree_id: file.worktree_id(cx),
2327 path: file.path.clone(),
2328 };
2329 let jump_anchor = range
2330 .primary
2331 .as_ref()
2332 .map_or(range.context.start, |primary| primary.start);
2333 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2334
2335 cx.listener_for(&self.editor, move |editor, _, cx| {
2336 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2337 })
2338 });
2339
2340 let element = if *starts_new_buffer {
2341 let path = buffer.resolve_file_path(cx, include_root);
2342 let mut filename = None;
2343 let mut parent_path = None;
2344 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2345 if let Some(path) = path {
2346 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2347 parent_path = path
2348 .parent()
2349 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2350 }
2351
2352 v_flex()
2353 .id(("path header container", block_id))
2354 .size_full()
2355 .justify_center()
2356 .p(gpui::px(6.))
2357 .child(
2358 h_flex()
2359 .id("path header block")
2360 .size_full()
2361 .pl(gpui::px(12.))
2362 .pr(gpui::px(8.))
2363 .rounded_md()
2364 .shadow_md()
2365 .border()
2366 .border_color(cx.theme().colors().border)
2367 .bg(cx.theme().colors().editor_subheader_background)
2368 .justify_between()
2369 .hover(|style| style.bg(cx.theme().colors().element_hover))
2370 .child(
2371 h_flex().gap_3().child(
2372 h_flex()
2373 .gap_2()
2374 .child(
2375 filename
2376 .map(SharedString::from)
2377 .unwrap_or_else(|| "untitled".into()),
2378 )
2379 .when_some(parent_path, |then, path| {
2380 then.child(
2381 div().child(path).text_color(
2382 cx.theme().colors().text_muted,
2383 ),
2384 )
2385 }),
2386 ),
2387 )
2388 .when_some(jump_handler, |this, jump_handler| {
2389 this.cursor_pointer()
2390 .tooltip(|cx| {
2391 Tooltip::for_action(
2392 "Jump to Buffer",
2393 &OpenExcerpts,
2394 cx,
2395 )
2396 })
2397 .on_mouse_down(MouseButton::Left, |_, cx| {
2398 cx.stop_propagation()
2399 })
2400 .on_click(jump_handler)
2401 }),
2402 )
2403 } else {
2404 h_flex()
2405 .id(("collapsed context", block_id))
2406 .size_full()
2407 .gap(gutter_padding)
2408 .child(
2409 h_flex()
2410 .justify_end()
2411 .flex_none()
2412 .w(gutter_width - gutter_padding)
2413 .h_full()
2414 .text_buffer(cx)
2415 .text_color(cx.theme().colors().editor_line_number)
2416 .child("..."),
2417 )
2418 .child(
2419 ButtonLike::new("jump to collapsed context")
2420 .style(ButtonStyle::Transparent)
2421 .full_width()
2422 .child(
2423 div()
2424 .h_px()
2425 .w_full()
2426 .bg(cx.theme().colors().border_variant)
2427 .group_hover("", |style| {
2428 style.bg(cx.theme().colors().border)
2429 }),
2430 )
2431 .when_some(jump_handler, |this, jump_handler| {
2432 this.on_click(jump_handler).tooltip(|cx| {
2433 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2434 })
2435 }),
2436 )
2437 };
2438 element.into_any()
2439 }
2440 };
2441
2442 let size = element.measure(available_space, cx);
2443 (element, size)
2444 };
2445
2446 let mut fixed_block_max_width = Pixels::ZERO;
2447 let mut blocks = Vec::new();
2448 for (row, block) in fixed_blocks {
2449 let available_space = size(
2450 AvailableSpace::MinContent,
2451 AvailableSpace::Definite(block.height() as f32 * line_height),
2452 );
2453 let (element, element_size) =
2454 render_block(block, available_space, block_id, editor, cx);
2455 block_id += 1;
2456 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2457 blocks.push(BlockLayout {
2458 row,
2459 element,
2460 available_space,
2461 style: BlockStyle::Fixed,
2462 });
2463 }
2464 for (row, block) in non_fixed_blocks {
2465 let style = match block {
2466 TransformBlock::Custom(block) => block.style(),
2467 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2468 };
2469 let width = match style {
2470 BlockStyle::Sticky => editor_width,
2471 BlockStyle::Flex => editor_width
2472 .max(fixed_block_max_width)
2473 .max(gutter_width + scroll_width),
2474 BlockStyle::Fixed => unreachable!(),
2475 };
2476 let available_space = size(
2477 AvailableSpace::Definite(width),
2478 AvailableSpace::Definite(block.height() as f32 * line_height),
2479 );
2480 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2481 block_id += 1;
2482 blocks.push(BlockLayout {
2483 row,
2484 element,
2485 available_space,
2486 style,
2487 });
2488 }
2489 (
2490 scroll_width.max(fixed_block_max_width - gutter_width),
2491 blocks,
2492 )
2493 }
2494
2495 fn paint_scroll_wheel_listener(
2496 &mut self,
2497 interactive_bounds: &InteractiveBounds,
2498 layout: &LayoutState,
2499 cx: &mut WindowContext,
2500 ) {
2501 cx.on_mouse_event({
2502 let position_map = layout.position_map.clone();
2503 let editor = self.editor.clone();
2504 let interactive_bounds = interactive_bounds.clone();
2505 let mut delta = ScrollDelta::default();
2506
2507 move |event: &ScrollWheelEvent, phase, cx| {
2508 if phase == DispatchPhase::Bubble
2509 && interactive_bounds.visibly_contains(&event.position, cx)
2510 {
2511 delta = delta.coalesce(event.delta);
2512 editor.update(cx, |editor, cx| {
2513 let position = event.position;
2514 let position_map: &PositionMap = &position_map;
2515 let bounds = &interactive_bounds;
2516 if !bounds.visibly_contains(&position, cx) {
2517 return;
2518 }
2519
2520 let line_height = position_map.line_height;
2521 let max_glyph_width = position_map.em_width;
2522 let (delta, axis) = match delta {
2523 gpui::ScrollDelta::Pixels(mut pixels) => {
2524 //Trackpad
2525 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2526 (pixels, axis)
2527 }
2528
2529 gpui::ScrollDelta::Lines(lines) => {
2530 //Not trackpad
2531 let pixels =
2532 point(lines.x * max_glyph_width, lines.y * line_height);
2533 (pixels, None)
2534 }
2535 };
2536
2537 let scroll_position = position_map.snapshot.scroll_position();
2538 let x = f32::from(
2539 (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width,
2540 );
2541 let y =
2542 f32::from((scroll_position.y * line_height - delta.y) / line_height);
2543 let scroll_position =
2544 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2545 editor.scroll(scroll_position, axis, cx);
2546 cx.stop_propagation();
2547 });
2548 }
2549 }
2550 });
2551 }
2552
2553 fn paint_mouse_listeners(
2554 &mut self,
2555 bounds: Bounds<Pixels>,
2556 gutter_bounds: Bounds<Pixels>,
2557 text_bounds: Bounds<Pixels>,
2558 layout: &LayoutState,
2559 cx: &mut WindowContext,
2560 ) {
2561 let interactive_bounds = InteractiveBounds {
2562 bounds: bounds.intersect(&cx.content_mask().bounds),
2563 stacking_order: cx.stacking_order().clone(),
2564 };
2565
2566 self.paint_scroll_wheel_listener(&interactive_bounds, layout, cx);
2567
2568 cx.on_mouse_event({
2569 let position_map = layout.position_map.clone();
2570 let editor = self.editor.clone();
2571 let stacking_order = cx.stacking_order().clone();
2572 let interactive_bounds = interactive_bounds.clone();
2573
2574 move |event: &MouseDownEvent, phase, cx| {
2575 if phase == DispatchPhase::Bubble
2576 && interactive_bounds.visibly_contains(&event.position, cx)
2577 {
2578 match event.button {
2579 MouseButton::Left => editor.update(cx, |editor, cx| {
2580 Self::mouse_left_down(
2581 editor,
2582 event,
2583 &position_map,
2584 text_bounds,
2585 gutter_bounds,
2586 &stacking_order,
2587 cx,
2588 );
2589 }),
2590 MouseButton::Right => editor.update(cx, |editor, cx| {
2591 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx);
2592 }),
2593 _ => {}
2594 };
2595 }
2596 }
2597 });
2598
2599 cx.on_mouse_event({
2600 let position_map = layout.position_map.clone();
2601 let editor = self.editor.clone();
2602 let stacking_order = cx.stacking_order().clone();
2603 let interactive_bounds = interactive_bounds.clone();
2604
2605 move |event: &MouseUpEvent, phase, cx| {
2606 if phase == DispatchPhase::Bubble {
2607 editor.update(cx, |editor, cx| {
2608 Self::mouse_up(
2609 editor,
2610 event,
2611 &position_map,
2612 text_bounds,
2613 &interactive_bounds,
2614 &stacking_order,
2615 cx,
2616 )
2617 });
2618 }
2619 }
2620 });
2621 cx.on_mouse_event({
2622 let position_map = layout.position_map.clone();
2623 let editor = self.editor.clone();
2624 let stacking_order = cx.stacking_order().clone();
2625
2626 move |event: &MouseMoveEvent, phase, cx| {
2627 // if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
2628
2629 if phase == DispatchPhase::Bubble {
2630 editor.update(cx, |editor, cx| {
2631 if event.pressed_button == Some(MouseButton::Left) {
2632 Self::mouse_dragged(
2633 editor,
2634 event,
2635 &position_map,
2636 text_bounds,
2637 gutter_bounds,
2638 &stacking_order,
2639 cx,
2640 )
2641 }
2642
2643 if interactive_bounds.visibly_contains(&event.position, cx) {
2644 Self::mouse_moved(
2645 editor,
2646 event,
2647 &position_map,
2648 text_bounds,
2649 gutter_bounds,
2650 &stacking_order,
2651 cx,
2652 )
2653 }
2654 });
2655 }
2656 }
2657 });
2658 }
2659}
2660
2661#[derive(Debug)]
2662pub(crate) struct LineWithInvisibles {
2663 pub line: ShapedLine,
2664 invisibles: Vec<Invisible>,
2665}
2666
2667impl LineWithInvisibles {
2668 fn from_chunks<'a>(
2669 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2670 text_style: &TextStyle,
2671 max_line_len: usize,
2672 max_line_count: usize,
2673 line_number_layouts: &[Option<ShapedLine>],
2674 editor_mode: EditorMode,
2675 cx: &WindowContext,
2676 ) -> Vec<Self> {
2677 let mut layouts = Vec::with_capacity(max_line_count);
2678 let mut line = String::new();
2679 let mut invisibles = Vec::new();
2680 let mut styles = Vec::new();
2681 let mut non_whitespace_added = false;
2682 let mut row = 0;
2683 let mut line_exceeded_max_len = false;
2684 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2685
2686 for highlighted_chunk in chunks.chain([HighlightedChunk {
2687 chunk: "\n",
2688 style: None,
2689 is_tab: false,
2690 }]) {
2691 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2692 if ix > 0 {
2693 let shaped_line = cx
2694 .text_system()
2695 .shape_line(line.clone().into(), font_size, &styles)
2696 .unwrap();
2697 layouts.push(Self {
2698 line: shaped_line,
2699 invisibles: invisibles.drain(..).collect(),
2700 });
2701
2702 line.clear();
2703 styles.clear();
2704 row += 1;
2705 line_exceeded_max_len = false;
2706 non_whitespace_added = false;
2707 if row == max_line_count {
2708 return layouts;
2709 }
2710 }
2711
2712 if !line_chunk.is_empty() && !line_exceeded_max_len {
2713 let text_style = if let Some(style) = highlighted_chunk.style {
2714 Cow::Owned(text_style.clone().highlight(style))
2715 } else {
2716 Cow::Borrowed(text_style)
2717 };
2718
2719 if line.len() + line_chunk.len() > max_line_len {
2720 let mut chunk_len = max_line_len - line.len();
2721 while !line_chunk.is_char_boundary(chunk_len) {
2722 chunk_len -= 1;
2723 }
2724 line_chunk = &line_chunk[..chunk_len];
2725 line_exceeded_max_len = true;
2726 }
2727
2728 styles.push(TextRun {
2729 len: line_chunk.len(),
2730 font: text_style.font(),
2731 color: text_style.color,
2732 background_color: text_style.background_color,
2733 underline: text_style.underline,
2734 });
2735
2736 if editor_mode == EditorMode::Full {
2737 // Line wrap pads its contents with fake whitespaces,
2738 // avoid printing them
2739 let inside_wrapped_string = line_number_layouts
2740 .get(row)
2741 .and_then(|layout| layout.as_ref())
2742 .is_none();
2743 if highlighted_chunk.is_tab {
2744 if non_whitespace_added || !inside_wrapped_string {
2745 invisibles.push(Invisible::Tab {
2746 line_start_offset: line.len(),
2747 });
2748 }
2749 } else {
2750 invisibles.extend(
2751 line_chunk
2752 .chars()
2753 .enumerate()
2754 .filter(|(_, line_char)| {
2755 let is_whitespace = line_char.is_whitespace();
2756 non_whitespace_added |= !is_whitespace;
2757 is_whitespace
2758 && (non_whitespace_added || !inside_wrapped_string)
2759 })
2760 .map(|(whitespace_index, _)| Invisible::Whitespace {
2761 line_offset: line.len() + whitespace_index,
2762 }),
2763 )
2764 }
2765 }
2766
2767 line.push_str(line_chunk);
2768 }
2769 }
2770 }
2771
2772 layouts
2773 }
2774
2775 fn draw(
2776 &self,
2777 layout: &LayoutState,
2778 row: u32,
2779 content_origin: gpui::Point<Pixels>,
2780 whitespace_setting: ShowWhitespaceSetting,
2781 selection_ranges: &[Range<DisplayPoint>],
2782 cx: &mut WindowContext,
2783 ) {
2784 let line_height = layout.position_map.line_height;
2785 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2786
2787 self.line
2788 .paint(
2789 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2790 line_height,
2791 cx,
2792 )
2793 .log_err();
2794
2795 self.draw_invisibles(
2796 &selection_ranges,
2797 layout,
2798 content_origin,
2799 line_y,
2800 row,
2801 line_height,
2802 whitespace_setting,
2803 cx,
2804 );
2805 }
2806
2807 fn draw_invisibles(
2808 &self,
2809 selection_ranges: &[Range<DisplayPoint>],
2810 layout: &LayoutState,
2811 content_origin: gpui::Point<Pixels>,
2812 line_y: Pixels,
2813 row: u32,
2814 line_height: Pixels,
2815 whitespace_setting: ShowWhitespaceSetting,
2816 cx: &mut WindowContext,
2817 ) {
2818 let allowed_invisibles_regions = match whitespace_setting {
2819 ShowWhitespaceSetting::None => return,
2820 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2821 ShowWhitespaceSetting::All => None,
2822 };
2823
2824 for invisible in &self.invisibles {
2825 let (&token_offset, invisible_symbol) = match invisible {
2826 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2827 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2828 };
2829
2830 let x_offset = self.line.x_for_index(token_offset);
2831 let invisible_offset =
2832 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2833 let origin = content_origin
2834 + gpui::point(
2835 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2836 line_y,
2837 );
2838
2839 if let Some(allowed_regions) = allowed_invisibles_regions {
2840 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2841 if !allowed_regions
2842 .iter()
2843 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2844 {
2845 continue;
2846 }
2847 }
2848 invisible_symbol.paint(origin, line_height, cx).log_err();
2849 }
2850 }
2851}
2852
2853#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2854enum Invisible {
2855 Tab { line_start_offset: usize },
2856 Whitespace { line_offset: usize },
2857}
2858
2859impl Element for EditorElement {
2860 type State = ();
2861
2862 fn request_layout(
2863 &mut self,
2864 _element_state: Option<Self::State>,
2865 cx: &mut gpui::WindowContext,
2866 ) -> (gpui::LayoutId, Self::State) {
2867 cx.with_view_id(self.editor.entity_id(), |cx| {
2868 self.editor.update(cx, |editor, cx| {
2869 editor.set_style(self.style.clone(), cx);
2870
2871 let layout_id = match editor.mode {
2872 EditorMode::SingleLine => {
2873 let rem_size = cx.rem_size();
2874 let mut style = Style::default();
2875 style.size.width = relative(1.).into();
2876 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2877 cx.request_layout(&style, None)
2878 }
2879 EditorMode::AutoHeight { max_lines } => {
2880 let editor_handle = cx.view().clone();
2881 let max_line_number_width =
2882 self.max_line_number_width(&editor.snapshot(cx), cx);
2883 cx.request_measured_layout(
2884 Style::default(),
2885 move |known_dimensions, _, cx| {
2886 editor_handle
2887 .update(cx, |editor, cx| {
2888 compute_auto_height_layout(
2889 editor,
2890 max_lines,
2891 max_line_number_width,
2892 known_dimensions,
2893 cx,
2894 )
2895 })
2896 .unwrap_or_default()
2897 },
2898 )
2899 }
2900 EditorMode::Full => {
2901 let mut style = Style::default();
2902 style.size.width = relative(1.).into();
2903 style.size.height = relative(1.).into();
2904 cx.request_layout(&style, None)
2905 }
2906 };
2907
2908 (layout_id, ())
2909 })
2910 })
2911 }
2912
2913 fn paint(
2914 &mut self,
2915 bounds: Bounds<gpui::Pixels>,
2916 _element_state: &mut Self::State,
2917 cx: &mut gpui::WindowContext,
2918 ) {
2919 let editor = self.editor.clone();
2920
2921 cx.paint_view(self.editor.entity_id(), |cx| {
2922 cx.with_text_style(
2923 Some(gpui::TextStyleRefinement {
2924 font_size: Some(self.style.text.font_size),
2925 line_height: Some(self.style.text.line_height),
2926 ..Default::default()
2927 }),
2928 |cx| {
2929 let mut layout = self.compute_layout(bounds, cx);
2930 let gutter_bounds = Bounds {
2931 origin: bounds.origin,
2932 size: layout.gutter_size,
2933 };
2934 let text_bounds = Bounds {
2935 origin: gutter_bounds.upper_right(),
2936 size: layout.text_size,
2937 };
2938
2939 let focus_handle = editor.focus_handle(cx);
2940 let key_context = self.editor.read(cx).key_context(cx);
2941 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
2942 self.register_actions(cx);
2943 self.register_key_listeners(cx);
2944
2945 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2946 let input_handler =
2947 ElementInputHandler::new(bounds, self.editor.clone(), cx);
2948 cx.handle_input(&focus_handle, input_handler);
2949
2950 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2951 if layout.gutter_size.width > Pixels::ZERO {
2952 self.paint_gutter(gutter_bounds, &mut layout, cx);
2953 }
2954 self.paint_text(text_bounds, &mut layout, cx);
2955
2956 cx.with_z_index(0, |cx| {
2957 self.paint_mouse_listeners(
2958 bounds,
2959 gutter_bounds,
2960 text_bounds,
2961 &layout,
2962 cx,
2963 );
2964 });
2965 if !layout.blocks.is_empty() {
2966 cx.with_z_index(0, |cx| {
2967 cx.with_element_id(Some("editor_blocks"), |cx| {
2968 self.paint_blocks(bounds, &mut layout, cx);
2969 });
2970 })
2971 }
2972
2973 cx.with_z_index(1, |cx| {
2974 self.paint_overlays(text_bounds, &mut layout, cx);
2975 });
2976
2977 cx.with_z_index(2, |cx| self.paint_scrollbar(bounds, &mut layout, cx));
2978 });
2979 })
2980 },
2981 )
2982 })
2983 }
2984}
2985
2986impl IntoElement for EditorElement {
2987 type Element = Self;
2988
2989 fn element_id(&self) -> Option<gpui::ElementId> {
2990 self.editor.element_id()
2991 }
2992
2993 fn into_element(self) -> Self::Element {
2994 self
2995 }
2996}
2997
2998type BufferRow = u32;
2999
3000pub struct LayoutState {
3001 position_map: Arc<PositionMap>,
3002 gutter_size: Size<Pixels>,
3003 gutter_padding: Pixels,
3004 gutter_margin: Pixels,
3005 text_size: gpui::Size<Pixels>,
3006 mode: EditorMode,
3007 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3008 visible_anchor_range: Range<Anchor>,
3009 visible_display_row_range: Range<u32>,
3010 active_rows: BTreeMap<u32, bool>,
3011 highlighted_rows: Option<Range<u32>>,
3012 line_numbers: Vec<Option<ShapedLine>>,
3013 display_hunks: Vec<DisplayDiffHunk>,
3014 blocks: Vec<BlockLayout>,
3015 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3016 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3017 scrollbar_row_range: Range<f32>,
3018 show_scrollbars: bool,
3019 is_singleton: bool,
3020 max_row: u32,
3021 context_menu: Option<(DisplayPoint, AnyElement)>,
3022 code_actions_indicator: Option<CodeActionsIndicator>,
3023 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3024 fold_indicators: Vec<Option<IconButton>>,
3025 tab_invisible: ShapedLine,
3026 space_invisible: ShapedLine,
3027}
3028
3029struct CodeActionsIndicator {
3030 row: u32,
3031 button: IconButton,
3032}
3033
3034struct PositionMap {
3035 size: Size<Pixels>,
3036 line_height: Pixels,
3037 scroll_position: gpui::Point<Pixels>,
3038 scroll_max: gpui::Point<f32>,
3039 em_width: Pixels,
3040 em_advance: Pixels,
3041 line_layouts: Vec<LineWithInvisibles>,
3042 snapshot: EditorSnapshot,
3043}
3044
3045#[derive(Debug, Copy, Clone)]
3046pub struct PointForPosition {
3047 pub previous_valid: DisplayPoint,
3048 pub next_valid: DisplayPoint,
3049 pub exact_unclipped: DisplayPoint,
3050 pub column_overshoot_after_line_end: u32,
3051}
3052
3053impl PointForPosition {
3054 #[cfg(test)]
3055 pub fn valid(valid: DisplayPoint) -> Self {
3056 Self {
3057 previous_valid: valid,
3058 next_valid: valid,
3059 exact_unclipped: valid,
3060 column_overshoot_after_line_end: 0,
3061 }
3062 }
3063
3064 pub fn as_valid(&self) -> Option<DisplayPoint> {
3065 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3066 Some(self.previous_valid)
3067 } else {
3068 None
3069 }
3070 }
3071}
3072
3073impl PositionMap {
3074 fn point_for_position(
3075 &self,
3076 text_bounds: Bounds<Pixels>,
3077 position: gpui::Point<Pixels>,
3078 ) -> PointForPosition {
3079 let scroll_position = self.snapshot.scroll_position();
3080 let position = position - text_bounds.origin;
3081 let y = position.y.max(px(0.)).min(self.size.height);
3082 let x = position.x + (scroll_position.x * self.em_width);
3083 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3084
3085 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3086 .line_layouts
3087 .get(row as usize - scroll_position.y as usize)
3088 .map(|&LineWithInvisibles { ref line, .. }| line)
3089 {
3090 if let Some(ix) = line.index_for_x(x) {
3091 (ix as u32, px(0.))
3092 } else {
3093 (line.len as u32, px(0.).max(x - line.width))
3094 }
3095 } else {
3096 (0, x)
3097 };
3098
3099 let mut exact_unclipped = DisplayPoint::new(row, column);
3100 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3101 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3102
3103 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3104 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3105 PointForPosition {
3106 previous_valid,
3107 next_valid,
3108 exact_unclipped,
3109 column_overshoot_after_line_end,
3110 }
3111 }
3112}
3113
3114struct BlockLayout {
3115 row: u32,
3116 element: AnyElement,
3117 available_space: Size<AvailableSpace>,
3118 style: BlockStyle,
3119}
3120
3121fn layout_line(
3122 row: u32,
3123 snapshot: &EditorSnapshot,
3124 style: &EditorStyle,
3125 cx: &WindowContext,
3126) -> Result<ShapedLine> {
3127 let mut line = snapshot.line(row);
3128
3129 if line.len() > MAX_LINE_LEN {
3130 let mut len = MAX_LINE_LEN;
3131 while !line.is_char_boundary(len) {
3132 len -= 1;
3133 }
3134
3135 line.truncate(len);
3136 }
3137
3138 cx.text_system().shape_line(
3139 line.into(),
3140 style.text.font_size.to_pixels(cx.rem_size()),
3141 &[TextRun {
3142 len: snapshot.line_len(row) as usize,
3143 font: style.text.font(),
3144 color: Hsla::default(),
3145 background_color: None,
3146 underline: None,
3147 }],
3148 )
3149}
3150
3151#[derive(Debug)]
3152pub struct Cursor {
3153 origin: gpui::Point<Pixels>,
3154 block_width: Pixels,
3155 line_height: Pixels,
3156 color: Hsla,
3157 shape: CursorShape,
3158 block_text: Option<ShapedLine>,
3159 cursor_name: Option<CursorName>,
3160}
3161
3162#[derive(Debug)]
3163pub struct CursorName {
3164 string: SharedString,
3165 color: Hsla,
3166 is_top_row: bool,
3167 z_index: u8,
3168}
3169
3170impl Cursor {
3171 pub fn new(
3172 origin: gpui::Point<Pixels>,
3173 block_width: Pixels,
3174 line_height: Pixels,
3175 color: Hsla,
3176 shape: CursorShape,
3177 block_text: Option<ShapedLine>,
3178 cursor_name: Option<CursorName>,
3179 ) -> Cursor {
3180 Cursor {
3181 origin,
3182 block_width,
3183 line_height,
3184 color,
3185 shape,
3186 block_text,
3187 cursor_name,
3188 }
3189 }
3190
3191 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3192 Bounds {
3193 origin: self.origin + origin,
3194 size: size(self.block_width, self.line_height),
3195 }
3196 }
3197
3198 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3199 let bounds = match self.shape {
3200 CursorShape::Bar => Bounds {
3201 origin: self.origin + origin,
3202 size: size(px(2.0), self.line_height),
3203 },
3204 CursorShape::Block | CursorShape::Hollow => Bounds {
3205 origin: self.origin + origin,
3206 size: size(self.block_width, self.line_height),
3207 },
3208 CursorShape::Underscore => Bounds {
3209 origin: self.origin
3210 + origin
3211 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3212 size: size(self.block_width, px(2.0)),
3213 },
3214 };
3215
3216 //Draw background or border quad
3217 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3218 outline(bounds, self.color)
3219 } else {
3220 fill(bounds, self.color)
3221 };
3222
3223 if let Some(name) = &self.cursor_name {
3224 let text_size = self.line_height / 1.5;
3225
3226 let name_origin = if name.is_top_row {
3227 point(bounds.right() - px(1.), bounds.top())
3228 } else {
3229 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3230 };
3231 cx.with_z_index(name.z_index, |cx| {
3232 div()
3233 .bg(self.color)
3234 .text_size(text_size)
3235 .px_0p5()
3236 .line_height(text_size + px(2.))
3237 .text_color(name.color)
3238 .child(name.string.clone())
3239 .into_any_element()
3240 .draw(
3241 name_origin,
3242 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3243 cx,
3244 )
3245 })
3246 }
3247
3248 cx.paint_quad(cursor);
3249
3250 if let Some(block_text) = &self.block_text {
3251 block_text
3252 .paint(self.origin + origin, self.line_height, cx)
3253 .log_err();
3254 }
3255 }
3256
3257 pub fn shape(&self) -> CursorShape {
3258 self.shape
3259 }
3260}
3261
3262#[derive(Debug)]
3263pub struct HighlightedRange {
3264 pub start_y: Pixels,
3265 pub line_height: Pixels,
3266 pub lines: Vec<HighlightedRangeLine>,
3267 pub color: Hsla,
3268 pub corner_radius: Pixels,
3269}
3270
3271#[derive(Debug)]
3272pub struct HighlightedRangeLine {
3273 pub start_x: Pixels,
3274 pub end_x: Pixels,
3275}
3276
3277impl HighlightedRange {
3278 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3279 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3280 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3281 self.paint_lines(
3282 self.start_y + self.line_height,
3283 &self.lines[1..],
3284 bounds,
3285 cx,
3286 );
3287 } else {
3288 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3289 }
3290 }
3291
3292 fn paint_lines(
3293 &self,
3294 start_y: Pixels,
3295 lines: &[HighlightedRangeLine],
3296 _bounds: Bounds<Pixels>,
3297 cx: &mut WindowContext,
3298 ) {
3299 if lines.is_empty() {
3300 return;
3301 }
3302
3303 let first_line = lines.first().unwrap();
3304 let last_line = lines.last().unwrap();
3305
3306 let first_top_left = point(first_line.start_x, start_y);
3307 let first_top_right = point(first_line.end_x, start_y);
3308
3309 let curve_height = point(Pixels::ZERO, self.corner_radius);
3310 let curve_width = |start_x: Pixels, end_x: Pixels| {
3311 let max = (end_x - start_x) / 2.;
3312 let width = if max < self.corner_radius {
3313 max
3314 } else {
3315 self.corner_radius
3316 };
3317
3318 point(width, Pixels::ZERO)
3319 };
3320
3321 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3322 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3323 path.curve_to(first_top_right + curve_height, first_top_right);
3324
3325 let mut iter = lines.iter().enumerate().peekable();
3326 while let Some((ix, line)) = iter.next() {
3327 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3328
3329 if let Some((_, next_line)) = iter.peek() {
3330 let next_top_right = point(next_line.end_x, bottom_right.y);
3331
3332 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3333 Ordering::Equal => {
3334 path.line_to(bottom_right);
3335 }
3336 Ordering::Less => {
3337 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3338 path.line_to(bottom_right - curve_height);
3339 if self.corner_radius > Pixels::ZERO {
3340 path.curve_to(bottom_right - curve_width, bottom_right);
3341 }
3342 path.line_to(next_top_right + curve_width);
3343 if self.corner_radius > Pixels::ZERO {
3344 path.curve_to(next_top_right + curve_height, next_top_right);
3345 }
3346 }
3347 Ordering::Greater => {
3348 let curve_width = curve_width(bottom_right.x, next_top_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 }
3359 } else {
3360 let curve_width = curve_width(line.start_x, line.end_x);
3361 path.line_to(bottom_right - curve_height);
3362 if self.corner_radius > Pixels::ZERO {
3363 path.curve_to(bottom_right - curve_width, bottom_right);
3364 }
3365
3366 let bottom_left = point(line.start_x, bottom_right.y);
3367 path.line_to(bottom_left + curve_width);
3368 if self.corner_radius > Pixels::ZERO {
3369 path.curve_to(bottom_left - curve_height, bottom_left);
3370 }
3371 }
3372 }
3373
3374 if first_line.start_x > last_line.start_x {
3375 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3376 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3377 path.line_to(second_top_left + curve_height);
3378 if self.corner_radius > Pixels::ZERO {
3379 path.curve_to(second_top_left + curve_width, second_top_left);
3380 }
3381 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3382 path.line_to(first_bottom_left - curve_width);
3383 if self.corner_radius > Pixels::ZERO {
3384 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3385 }
3386 }
3387
3388 path.line_to(first_top_left + curve_height);
3389 if self.corner_radius > Pixels::ZERO {
3390 path.curve_to(first_top_left + top_curve_width, first_top_left);
3391 }
3392 path.line_to(first_top_right - top_curve_width);
3393
3394 cx.paint_path(path, self.color);
3395 }
3396}
3397
3398pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3399 (delta.pow(1.5) / 100.0).into()
3400}
3401
3402fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3403 (delta.pow(1.2) / 300.0).into()
3404}
3405
3406#[cfg(test)]
3407mod tests {
3408 use super::*;
3409 use crate::{
3410 display_map::{BlockDisposition, BlockProperties},
3411 editor_tests::{init_test, update_test_language_settings},
3412 Editor, MultiBuffer,
3413 };
3414 use gpui::TestAppContext;
3415 use language::language_settings;
3416 use log::info;
3417 use std::{num::NonZeroU32, sync::Arc};
3418 use util::test::sample_text;
3419
3420 #[gpui::test]
3421 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3422 init_test(cx, |_| {});
3423 let window = cx.add_window(|cx| {
3424 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3425 Editor::new(EditorMode::Full, buffer, None, cx)
3426 });
3427
3428 let editor = window.root(cx).unwrap();
3429 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3430 let element = EditorElement::new(&editor, style);
3431
3432 let layouts = window
3433 .update(cx, |editor, cx| {
3434 let snapshot = editor.snapshot(cx);
3435 element
3436 .shape_line_numbers(
3437 0..6,
3438 &Default::default(),
3439 DisplayPoint::new(0, 0),
3440 false,
3441 &snapshot,
3442 cx,
3443 )
3444 .0
3445 })
3446 .unwrap();
3447 assert_eq!(layouts.len(), 6);
3448
3449 let relative_rows = window
3450 .update(cx, |editor, cx| {
3451 let snapshot = editor.snapshot(cx);
3452 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3453 })
3454 .unwrap();
3455 assert_eq!(relative_rows[&0], 3);
3456 assert_eq!(relative_rows[&1], 2);
3457 assert_eq!(relative_rows[&2], 1);
3458 // current line has no relative number
3459 assert_eq!(relative_rows[&4], 1);
3460 assert_eq!(relative_rows[&5], 2);
3461
3462 // works if cursor is before screen
3463 let relative_rows = window
3464 .update(cx, |editor, cx| {
3465 let snapshot = editor.snapshot(cx);
3466
3467 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3468 })
3469 .unwrap();
3470 assert_eq!(relative_rows.len(), 3);
3471 assert_eq!(relative_rows[&3], 2);
3472 assert_eq!(relative_rows[&4], 3);
3473 assert_eq!(relative_rows[&5], 4);
3474
3475 // works if cursor is after screen
3476 let relative_rows = window
3477 .update(cx, |editor, cx| {
3478 let snapshot = editor.snapshot(cx);
3479
3480 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3481 })
3482 .unwrap();
3483 assert_eq!(relative_rows.len(), 3);
3484 assert_eq!(relative_rows[&0], 5);
3485 assert_eq!(relative_rows[&1], 4);
3486 assert_eq!(relative_rows[&2], 3);
3487 }
3488
3489 #[gpui::test]
3490 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3491 init_test(cx, |_| {});
3492
3493 let window = cx.add_window(|cx| {
3494 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3495 Editor::new(EditorMode::Full, buffer, None, cx)
3496 });
3497 let editor = window.root(cx).unwrap();
3498 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3499 let mut element = EditorElement::new(&editor, style);
3500
3501 window
3502 .update(cx, |editor, cx| {
3503 editor.cursor_shape = CursorShape::Block;
3504 editor.change_selections(None, cx, |s| {
3505 s.select_ranges([
3506 Point::new(0, 0)..Point::new(1, 0),
3507 Point::new(3, 2)..Point::new(3, 3),
3508 Point::new(5, 6)..Point::new(6, 0),
3509 ]);
3510 });
3511 })
3512 .unwrap();
3513 let state = cx
3514 .update_window(window.into(), |view, cx| {
3515 cx.with_view_id(view.entity_id(), |cx| {
3516 element.compute_layout(
3517 Bounds {
3518 origin: point(px(500.), px(500.)),
3519 size: size(px(500.), px(500.)),
3520 },
3521 cx,
3522 )
3523 })
3524 })
3525 .unwrap();
3526
3527 assert_eq!(state.selections.len(), 1);
3528 let local_selections = &state.selections[0].1;
3529 assert_eq!(local_selections.len(), 3);
3530 // moves cursor back one line
3531 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3532 assert_eq!(
3533 local_selections[0].range,
3534 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3535 );
3536
3537 // moves cursor back one column
3538 assert_eq!(
3539 local_selections[1].range,
3540 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3541 );
3542 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3543
3544 // leaves cursor on the max point
3545 assert_eq!(
3546 local_selections[2].range,
3547 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3548 );
3549 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3550
3551 // active lines does not include 1 (even though the range of the selection does)
3552 assert_eq!(
3553 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3554 vec![0, 3, 5, 6]
3555 );
3556
3557 // multi-buffer support
3558 // in DisplayPoint co-ordinates, this is what we're dealing with:
3559 // 0: [[file
3560 // 1: header]]
3561 // 2: aaaaaa
3562 // 3: bbbbbb
3563 // 4: cccccc
3564 // 5:
3565 // 6: ...
3566 // 7: ffffff
3567 // 8: gggggg
3568 // 9: hhhhhh
3569 // 10:
3570 // 11: [[file
3571 // 12: header]]
3572 // 13: bbbbbb
3573 // 14: cccccc
3574 // 15: dddddd
3575 let window = cx.add_window(|cx| {
3576 let buffer = MultiBuffer::build_multi(
3577 [
3578 (
3579 &(sample_text(8, 6, 'a') + "\n"),
3580 vec![
3581 Point::new(0, 0)..Point::new(3, 0),
3582 Point::new(4, 0)..Point::new(7, 0),
3583 ],
3584 ),
3585 (
3586 &(sample_text(8, 6, 'a') + "\n"),
3587 vec![Point::new(1, 0)..Point::new(3, 0)],
3588 ),
3589 ],
3590 cx,
3591 );
3592 Editor::new(EditorMode::Full, buffer, None, cx)
3593 });
3594 let editor = window.root(cx).unwrap();
3595 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3596 let mut element = EditorElement::new(&editor, style);
3597 let _state = window.update(cx, |editor, cx| {
3598 editor.cursor_shape = CursorShape::Block;
3599 editor.change_selections(None, cx, |s| {
3600 s.select_display_ranges([
3601 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3602 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3603 ]);
3604 });
3605 });
3606
3607 let state = cx
3608 .update_window(window.into(), |view, cx| {
3609 cx.with_view_id(view.entity_id(), |cx| {
3610 element.compute_layout(
3611 Bounds {
3612 origin: point(px(500.), px(500.)),
3613 size: size(px(500.), px(500.)),
3614 },
3615 cx,
3616 )
3617 })
3618 })
3619 .unwrap();
3620 assert_eq!(state.selections.len(), 1);
3621 let local_selections = &state.selections[0].1;
3622 assert_eq!(local_selections.len(), 2);
3623
3624 // moves cursor on excerpt boundary back a line
3625 // and doesn't allow selection to bleed through
3626 assert_eq!(
3627 local_selections[0].range,
3628 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3629 );
3630 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3631 // moves cursor on buffer boundary back two lines
3632 // and doesn't allow selection to bleed through
3633 assert_eq!(
3634 local_selections[1].range,
3635 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3636 );
3637 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3638 }
3639
3640 #[gpui::test]
3641 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3642 init_test(cx, |_| {});
3643
3644 let window = cx.add_window(|cx| {
3645 let buffer = MultiBuffer::build_simple("", cx);
3646 Editor::new(EditorMode::Full, buffer, None, cx)
3647 });
3648 let editor = window.root(cx).unwrap();
3649 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3650 window
3651 .update(cx, |editor, cx| {
3652 editor.set_placeholder_text("hello", cx);
3653 editor.insert_blocks(
3654 [BlockProperties {
3655 style: BlockStyle::Fixed,
3656 disposition: BlockDisposition::Above,
3657 height: 3,
3658 position: Anchor::min(),
3659 render: Arc::new(|_| div().into_any()),
3660 }],
3661 None,
3662 cx,
3663 );
3664
3665 // Blur the editor so that it displays placeholder text.
3666 cx.blur();
3667 })
3668 .unwrap();
3669
3670 let mut element = EditorElement::new(&editor, style);
3671 let state = cx
3672 .update_window(window.into(), |view, cx| {
3673 cx.with_view_id(view.entity_id(), |cx| {
3674 element.compute_layout(
3675 Bounds {
3676 origin: point(px(500.), px(500.)),
3677 size: size(px(500.), px(500.)),
3678 },
3679 cx,
3680 )
3681 })
3682 })
3683 .unwrap();
3684 let size = state.position_map.size;
3685
3686 assert_eq!(state.position_map.line_layouts.len(), 4);
3687 assert_eq!(
3688 state
3689 .line_numbers
3690 .iter()
3691 .map(Option::is_some)
3692 .collect::<Vec<_>>(),
3693 &[false, false, false, true]
3694 );
3695
3696 // Don't panic.
3697 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3698 cx.update_window(window.into(), |_, cx| element.paint(bounds, &mut (), cx))
3699 .unwrap()
3700 }
3701
3702 #[gpui::test]
3703 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3704 const TAB_SIZE: u32 = 4;
3705
3706 let input_text = "\t \t|\t| a b";
3707 let expected_invisibles = vec![
3708 Invisible::Tab {
3709 line_start_offset: 0,
3710 },
3711 Invisible::Whitespace {
3712 line_offset: TAB_SIZE as usize,
3713 },
3714 Invisible::Tab {
3715 line_start_offset: TAB_SIZE as usize + 1,
3716 },
3717 Invisible::Tab {
3718 line_start_offset: TAB_SIZE as usize * 2 + 1,
3719 },
3720 Invisible::Whitespace {
3721 line_offset: TAB_SIZE as usize * 3 + 1,
3722 },
3723 Invisible::Whitespace {
3724 line_offset: TAB_SIZE as usize * 3 + 3,
3725 },
3726 ];
3727 assert_eq!(
3728 expected_invisibles.len(),
3729 input_text
3730 .chars()
3731 .filter(|initial_char| initial_char.is_whitespace())
3732 .count(),
3733 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3734 );
3735
3736 init_test(cx, |s| {
3737 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3738 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3739 });
3740
3741 let actual_invisibles =
3742 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3743
3744 assert_eq!(expected_invisibles, actual_invisibles);
3745 }
3746
3747 #[gpui::test]
3748 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3749 init_test(cx, |s| {
3750 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3751 s.defaults.tab_size = NonZeroU32::new(4);
3752 });
3753
3754 for editor_mode_without_invisibles in [
3755 EditorMode::SingleLine,
3756 EditorMode::AutoHeight { max_lines: 100 },
3757 ] {
3758 let invisibles = collect_invisibles_from_new_editor(
3759 cx,
3760 editor_mode_without_invisibles,
3761 "\t\t\t| | a b",
3762 px(500.0),
3763 );
3764 assert!(invisibles.is_empty(),
3765 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3766 }
3767 }
3768
3769 #[gpui::test]
3770 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3771 let tab_size = 4;
3772 let input_text = "a\tbcd ".repeat(9);
3773 let repeated_invisibles = [
3774 Invisible::Tab {
3775 line_start_offset: 1,
3776 },
3777 Invisible::Whitespace {
3778 line_offset: tab_size as usize + 3,
3779 },
3780 Invisible::Whitespace {
3781 line_offset: tab_size as usize + 4,
3782 },
3783 Invisible::Whitespace {
3784 line_offset: tab_size as usize + 5,
3785 },
3786 ];
3787 let expected_invisibles = std::iter::once(repeated_invisibles)
3788 .cycle()
3789 .take(9)
3790 .flatten()
3791 .collect::<Vec<_>>();
3792 assert_eq!(
3793 expected_invisibles.len(),
3794 input_text
3795 .chars()
3796 .filter(|initial_char| initial_char.is_whitespace())
3797 .count(),
3798 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3799 );
3800 info!("Expected invisibles: {expected_invisibles:?}");
3801
3802 init_test(cx, |_| {});
3803
3804 // Put the same string with repeating whitespace pattern into editors of various size,
3805 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3806 let resize_step = 10.0;
3807 let mut editor_width = 200.0;
3808 while editor_width <= 1000.0 {
3809 update_test_language_settings(cx, |s| {
3810 s.defaults.tab_size = NonZeroU32::new(tab_size);
3811 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3812 s.defaults.preferred_line_length = Some(editor_width as u32);
3813 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3814 });
3815
3816 let actual_invisibles = collect_invisibles_from_new_editor(
3817 cx,
3818 EditorMode::Full,
3819 &input_text,
3820 px(editor_width),
3821 );
3822
3823 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3824 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3825 let mut i = 0;
3826 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3827 i = actual_index;
3828 match expected_invisibles.get(i) {
3829 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3830 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3831 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3832 _ => {
3833 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3834 }
3835 },
3836 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3837 }
3838 }
3839 let missing_expected_invisibles = &expected_invisibles[i + 1..];
3840 assert!(
3841 missing_expected_invisibles.is_empty(),
3842 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3843 );
3844
3845 editor_width += resize_step;
3846 }
3847 }
3848
3849 fn collect_invisibles_from_new_editor(
3850 cx: &mut TestAppContext,
3851 editor_mode: EditorMode,
3852 input_text: &str,
3853 editor_width: Pixels,
3854 ) -> Vec<Invisible> {
3855 info!(
3856 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
3857 editor_width.0
3858 );
3859 let window = cx.add_window(|cx| {
3860 let buffer = MultiBuffer::build_simple(&input_text, cx);
3861 Editor::new(editor_mode, buffer, None, cx)
3862 });
3863 let editor = window.root(cx).unwrap();
3864 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3865 let mut element = EditorElement::new(&editor, style);
3866 window
3867 .update(cx, |editor, cx| {
3868 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3869 editor.set_wrap_width(Some(editor_width), cx);
3870 })
3871 .unwrap();
3872 let layout_state = cx
3873 .update_window(window.into(), |_, cx| {
3874 element.compute_layout(
3875 Bounds {
3876 origin: point(px(500.), px(500.)),
3877 size: size(px(500.), px(500.)),
3878 },
3879 cx,
3880 )
3881 })
3882 .unwrap();
3883
3884 layout_state
3885 .position_map
3886 .line_layouts
3887 .iter()
3888 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3889 .flatten()
3890 .cloned()
3891 .collect()
3892 }
3893}
3894
3895pub fn register_action<T: Action>(
3896 view: &View<Editor>,
3897 cx: &mut WindowContext,
3898 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
3899) {
3900 let view = view.clone();
3901 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
3902 let action = action.downcast_ref().unwrap();
3903 if phase == DispatchPhase::Bubble {
3904 view.update(cx, |editor, cx| {
3905 listener(editor, action, cx);
3906 })
3907 }
3908 })
3909}
3910
3911fn compute_auto_height_layout(
3912 editor: &mut Editor,
3913 max_lines: usize,
3914 max_line_number_width: Pixels,
3915 known_dimensions: Size<Option<Pixels>>,
3916 cx: &mut ViewContext<Editor>,
3917) -> Option<Size<Pixels>> {
3918 let width = known_dimensions.width?;
3919 if let Some(height) = known_dimensions.height {
3920 return Some(size(width, height));
3921 }
3922
3923 let style = editor.style.as_ref().unwrap();
3924 let font_id = cx.text_system().resolve_font(&style.text.font());
3925 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3926 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3927 let em_width = cx
3928 .text_system()
3929 .typographic_bounds(font_id, font_size, 'm')
3930 .unwrap()
3931 .size
3932 .width;
3933
3934 let mut snapshot = editor.snapshot(cx);
3935 let gutter_width;
3936 let gutter_margin;
3937 if snapshot.show_gutter {
3938 let descent = cx.text_system().descent(font_id, font_size);
3939 let gutter_padding_factor = 3.5;
3940 let gutter_padding = (em_width * gutter_padding_factor).round();
3941 let min_width_for_number_on_gutter = em_width * 4.0;
3942 gutter_width =
3943 max_line_number_width.max(min_width_for_number_on_gutter) + gutter_padding * 2.0;
3944 gutter_margin = -descent;
3945 } else {
3946 gutter_width = Pixels::ZERO;
3947 gutter_margin = Pixels::ZERO;
3948 };
3949
3950 editor.gutter_width = gutter_width;
3951 let text_width = width - gutter_width;
3952 let overscroll = size(em_width, px(0.));
3953
3954 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
3955 if editor.set_wrap_width(Some(editor_width), cx) {
3956 snapshot = editor.snapshot(cx);
3957 }
3958
3959 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
3960 let height = scroll_height
3961 .max(line_height)
3962 .min(line_height * max_lines as f32);
3963
3964 Some(size(width, height))
3965}