1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::{DoubleClickInMultibuffer, MultiCursorModifier, 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 mouse_context_menu,
13 scroll::scroll_amount::ScrollAmount,
14 CursorShape, DisplayPoint, DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode,
15 EditorSettings, EditorSnapshot, EditorStyle, GutterDimensions, HalfPageDown, HalfPageUp,
16 HoveredCursor, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, SelectPhase, Selection,
17 SoftWrap, ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
18};
19use anyhow::Result;
20use collections::{BTreeMap, HashMap};
21use git::diff::DiffHunkStatus;
22use gpui::{
23 div, fill, outline, overlay, point, px, quad, relative, size, svg, transparent_black, Action,
24 AnchorCorner, AnyElement, AvailableSpace, Bounds, ContentMask, Corners, CursorStyle,
25 DispatchPhase, Edges, Element, ElementContext, ElementInputHandler, Entity, Hitbox, Hsla,
26 InteractiveElement, IntoElement, ModifiersChangedEvent, MouseButton, MouseDownEvent,
27 MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine,
28 SharedString, Size, Stateful, StatefulInteractiveElement, Style, Styled, TextRun, TextStyle,
29 TextStyleRefinement, View, ViewContext, WindowContext,
30};
31use itertools::Itertools;
32use language::language_settings::ShowWhitespaceSetting;
33use lsp::DiagnosticSeverity;
34use multi_buffer::Anchor;
35use project::{
36 project_settings::{GitGutterSetting, ProjectSettings},
37 ProjectPath,
38};
39use settings::Settings;
40use smallvec::SmallVec;
41use std::{
42 any::TypeId,
43 borrow::Cow,
44 cmp::{self, Ordering},
45 fmt::Write,
46 iter, mem,
47 ops::Range,
48 sync::Arc,
49};
50use sum_tree::Bias;
51use theme::{ActiveTheme, PlayerColor};
52use ui::prelude::*;
53use ui::{h_flex, ButtonLike, ButtonStyle, Tooltip};
54use util::ResultExt;
55use workspace::item::Item;
56
57struct SelectionLayout {
58 head: DisplayPoint,
59 cursor_shape: CursorShape,
60 is_newest: bool,
61 is_local: bool,
62 range: Range<DisplayPoint>,
63 active_rows: Range<u32>,
64 user_name: Option<SharedString>,
65}
66
67impl SelectionLayout {
68 fn new<T: ToPoint + ToDisplayPoint + Clone>(
69 selection: Selection<T>,
70 line_mode: bool,
71 cursor_shape: CursorShape,
72 map: &DisplaySnapshot,
73 is_newest: bool,
74 is_local: bool,
75 user_name: Option<SharedString>,
76 ) -> Self {
77 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
78 let display_selection = point_selection.map(|p| p.to_display_point(map));
79 let mut range = display_selection.range();
80 let mut head = display_selection.head();
81 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
82 ..map.next_line_boundary(point_selection.end).1.row();
83
84 // vim visual line mode
85 if line_mode {
86 let point_range = map.expand_to_line(point_selection.range());
87 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
88 }
89
90 // any vim visual mode (including line mode)
91 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
92 if head.column() > 0 {
93 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
94 } else if head.row() > 0 && head != map.max_point() {
95 head = map.clip_point(
96 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
97 Bias::Left,
98 );
99 // updating range.end is a no-op unless you're cursor is
100 // on the newline containing a multi-buffer divider
101 // in which case the clip_point may have moved the head up
102 // an additional row.
103 range.end = DisplayPoint::new(head.row() + 1, 0);
104 active_rows.end = head.row();
105 }
106 }
107
108 Self {
109 head,
110 cursor_shape,
111 is_newest,
112 is_local,
113 range,
114 active_rows,
115 user_name,
116 }
117 }
118}
119
120pub struct EditorElement {
121 editor: View<Editor>,
122 style: EditorStyle,
123}
124
125impl EditorElement {
126 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
127 Self {
128 editor: editor.clone(),
129 style,
130 }
131 }
132
133 fn register_actions(&self, cx: &mut WindowContext) {
134 let view = &self.editor;
135 view.update(cx, |editor, cx| {
136 for action in editor.editor_actions.iter() {
137 (action)(cx)
138 }
139 });
140
141 crate::rust_analyzer_ext::apply_related_actions(view, cx);
142 register_action(view, cx, Editor::move_left);
143 register_action(view, cx, Editor::move_right);
144 register_action(view, cx, Editor::move_down);
145 register_action(view, cx, Editor::move_down_by_lines);
146 register_action(view, cx, Editor::select_down_by_lines);
147 register_action(view, cx, Editor::move_up);
148 register_action(view, cx, Editor::move_up_by_lines);
149 register_action(view, cx, Editor::select_up_by_lines);
150 register_action(view, cx, Editor::cancel);
151 register_action(view, cx, Editor::newline);
152 register_action(view, cx, Editor::newline_above);
153 register_action(view, cx, Editor::newline_below);
154 register_action(view, cx, Editor::backspace);
155 register_action(view, cx, Editor::delete);
156 register_action(view, cx, Editor::tab);
157 register_action(view, cx, Editor::tab_prev);
158 register_action(view, cx, Editor::indent);
159 register_action(view, cx, Editor::outdent);
160 register_action(view, cx, Editor::delete_line);
161 register_action(view, cx, Editor::join_lines);
162 register_action(view, cx, Editor::sort_lines_case_sensitive);
163 register_action(view, cx, Editor::sort_lines_case_insensitive);
164 register_action(view, cx, Editor::reverse_lines);
165 register_action(view, cx, Editor::shuffle_lines);
166 register_action(view, cx, Editor::convert_to_upper_case);
167 register_action(view, cx, Editor::convert_to_lower_case);
168 register_action(view, cx, Editor::convert_to_title_case);
169 register_action(view, cx, Editor::convert_to_snake_case);
170 register_action(view, cx, Editor::convert_to_kebab_case);
171 register_action(view, cx, Editor::convert_to_upper_camel_case);
172 register_action(view, cx, Editor::convert_to_lower_camel_case);
173 register_action(view, cx, Editor::delete_to_previous_word_start);
174 register_action(view, cx, Editor::delete_to_previous_subword_start);
175 register_action(view, cx, Editor::delete_to_next_word_end);
176 register_action(view, cx, Editor::delete_to_next_subword_end);
177 register_action(view, cx, Editor::delete_to_beginning_of_line);
178 register_action(view, cx, Editor::delete_to_end_of_line);
179 register_action(view, cx, Editor::cut_to_end_of_line);
180 register_action(view, cx, Editor::duplicate_line);
181 register_action(view, cx, Editor::move_line_up);
182 register_action(view, cx, Editor::move_line_down);
183 register_action(view, cx, Editor::transpose);
184 register_action(view, cx, Editor::cut);
185 register_action(view, cx, Editor::copy);
186 register_action(view, cx, Editor::paste);
187 register_action(view, cx, Editor::undo);
188 register_action(view, cx, Editor::redo);
189 register_action(view, cx, Editor::move_page_up);
190 register_action(view, cx, Editor::move_page_down);
191 register_action(view, cx, Editor::next_screen);
192 register_action(view, cx, Editor::scroll_cursor_top);
193 register_action(view, cx, Editor::scroll_cursor_center);
194 register_action(view, cx, Editor::scroll_cursor_bottom);
195 register_action(view, cx, |editor, _: &LineDown, cx| {
196 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
197 });
198 register_action(view, cx, |editor, _: &LineUp, cx| {
199 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
200 });
201 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
202 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
203 });
204 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
205 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
206 });
207 register_action(view, cx, |editor, _: &PageDown, cx| {
208 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
209 });
210 register_action(view, cx, |editor, _: &PageUp, cx| {
211 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
212 });
213 register_action(view, cx, Editor::move_to_previous_word_start);
214 register_action(view, cx, Editor::move_to_previous_subword_start);
215 register_action(view, cx, Editor::move_to_next_word_end);
216 register_action(view, cx, Editor::move_to_next_subword_end);
217 register_action(view, cx, Editor::move_to_beginning_of_line);
218 register_action(view, cx, Editor::move_to_end_of_line);
219 register_action(view, cx, Editor::move_to_start_of_paragraph);
220 register_action(view, cx, Editor::move_to_end_of_paragraph);
221 register_action(view, cx, Editor::move_to_beginning);
222 register_action(view, cx, Editor::move_to_end);
223 register_action(view, cx, Editor::select_up);
224 register_action(view, cx, Editor::select_down);
225 register_action(view, cx, Editor::select_left);
226 register_action(view, cx, Editor::select_right);
227 register_action(view, cx, Editor::select_to_previous_word_start);
228 register_action(view, cx, Editor::select_to_previous_subword_start);
229 register_action(view, cx, Editor::select_to_next_word_end);
230 register_action(view, cx, Editor::select_to_next_subword_end);
231 register_action(view, cx, Editor::select_to_beginning_of_line);
232 register_action(view, cx, Editor::select_to_end_of_line);
233 register_action(view, cx, Editor::select_to_start_of_paragraph);
234 register_action(view, cx, Editor::select_to_end_of_paragraph);
235 register_action(view, cx, Editor::select_to_beginning);
236 register_action(view, cx, Editor::select_to_end);
237 register_action(view, cx, Editor::select_all);
238 register_action(view, cx, |editor, action, cx| {
239 editor.select_all_matches(action, cx).log_err();
240 });
241 register_action(view, cx, Editor::select_line);
242 register_action(view, cx, Editor::split_selection_into_lines);
243 register_action(view, cx, Editor::add_selection_above);
244 register_action(view, cx, Editor::add_selection_below);
245 register_action(view, cx, |editor, action, cx| {
246 editor.select_next(action, cx).log_err();
247 });
248 register_action(view, cx, |editor, action, cx| {
249 editor.select_previous(action, cx).log_err();
250 });
251 register_action(view, cx, Editor::toggle_comments);
252 register_action(view, cx, Editor::select_larger_syntax_node);
253 register_action(view, cx, Editor::select_smaller_syntax_node);
254 register_action(view, cx, Editor::move_to_enclosing_bracket);
255 register_action(view, cx, Editor::undo_selection);
256 register_action(view, cx, Editor::redo_selection);
257 register_action(view, cx, Editor::go_to_diagnostic);
258 register_action(view, cx, Editor::go_to_prev_diagnostic);
259 register_action(view, cx, Editor::go_to_hunk);
260 register_action(view, cx, Editor::go_to_prev_hunk);
261 register_action(view, cx, |editor, a, cx| {
262 editor.go_to_definition(a, cx).detach_and_log_err(cx);
263 });
264 register_action(view, cx, |editor, a, cx| {
265 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
266 });
267 register_action(view, cx, |editor, a, cx| {
268 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
269 });
270 register_action(view, cx, |editor, a, cx| {
271 editor
272 .go_to_implementation_split(a, cx)
273 .detach_and_log_err(cx);
274 });
275 register_action(view, cx, |editor, a, cx| {
276 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
277 });
278 register_action(view, cx, |editor, a, cx| {
279 editor
280 .go_to_type_definition_split(a, cx)
281 .detach_and_log_err(cx);
282 });
283 register_action(view, cx, Editor::open_url);
284 register_action(view, cx, Editor::fold);
285 register_action(view, cx, Editor::fold_at);
286 register_action(view, cx, Editor::unfold_lines);
287 register_action(view, cx, Editor::unfold_at);
288 register_action(view, cx, Editor::fold_selected_ranges);
289 register_action(view, cx, Editor::show_completions);
290 register_action(view, cx, Editor::toggle_code_actions);
291 register_action(view, cx, Editor::open_excerpts);
292 register_action(view, cx, Editor::open_excerpts_in_split);
293 register_action(view, cx, Editor::toggle_soft_wrap);
294 register_action(view, cx, Editor::toggle_line_numbers);
295 register_action(view, cx, Editor::toggle_inlay_hints);
296 register_action(view, cx, hover_popover::hover);
297 register_action(view, cx, Editor::reveal_in_finder);
298 register_action(view, cx, Editor::copy_path);
299 register_action(view, cx, Editor::copy_relative_path);
300 register_action(view, cx, Editor::copy_highlight_json);
301 register_action(view, cx, Editor::copy_permalink_to_line);
302 register_action(view, cx, Editor::open_permalink_to_line);
303 register_action(view, cx, |editor, action, cx| {
304 if let Some(task) = editor.format(action, cx) {
305 task.detach_and_log_err(cx);
306 } else {
307 cx.propagate();
308 }
309 });
310 register_action(view, cx, Editor::restart_language_server);
311 register_action(view, cx, Editor::show_character_palette);
312 register_action(view, cx, |editor, action, cx| {
313 if let Some(task) = editor.confirm_completion(action, cx) {
314 task.detach_and_log_err(cx);
315 } else {
316 cx.propagate();
317 }
318 });
319 register_action(view, cx, |editor, action, cx| {
320 if let Some(task) = editor.confirm_code_action(action, cx) {
321 task.detach_and_log_err(cx);
322 } else {
323 cx.propagate();
324 }
325 });
326 register_action(view, cx, |editor, action, cx| {
327 if let Some(task) = editor.rename(action, cx) {
328 task.detach_and_log_err(cx);
329 } else {
330 cx.propagate();
331 }
332 });
333 register_action(view, cx, |editor, action, cx| {
334 if let Some(task) = editor.confirm_rename(action, cx) {
335 task.detach_and_log_err(cx);
336 } else {
337 cx.propagate();
338 }
339 });
340 register_action(view, cx, |editor, action, cx| {
341 if let Some(task) = editor.find_all_references(action, cx) {
342 task.detach_and_log_err(cx);
343 } else {
344 cx.propagate();
345 }
346 });
347 register_action(view, cx, Editor::next_inline_completion);
348 register_action(view, cx, Editor::previous_inline_completion);
349 register_action(view, cx, Editor::show_inline_completion);
350 register_action(view, cx, Editor::context_menu_first);
351 register_action(view, cx, Editor::context_menu_prev);
352 register_action(view, cx, Editor::context_menu_next);
353 register_action(view, cx, Editor::context_menu_last);
354 register_action(view, cx, Editor::display_cursor_names);
355 register_action(view, cx, Editor::unique_lines_case_insensitive);
356 register_action(view, cx, Editor::unique_lines_case_sensitive);
357 register_action(view, cx, Editor::accept_partial_inline_completion);
358 register_action(view, cx, Editor::revert_selected_hunks);
359 }
360
361 fn register_key_listeners(&self, cx: &mut ElementContext, layout: &EditorLayout) {
362 let position_map = layout.position_map.clone();
363 cx.on_key_event({
364 let editor = self.editor.clone();
365 let text_hitbox = layout.text_hitbox.clone();
366 move |event: &ModifiersChangedEvent, phase, cx| {
367 if phase != DispatchPhase::Bubble {
368 return;
369 }
370
371 editor.update(cx, |editor, cx| {
372 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
373 })
374 }
375 });
376 }
377
378 fn modifiers_changed(
379 editor: &mut Editor,
380 event: &ModifiersChangedEvent,
381 position_map: &PositionMap,
382 text_hitbox: &Hitbox,
383 cx: &mut ViewContext<Editor>,
384 ) {
385 let mouse_position = cx.mouse_position();
386 if !text_hitbox.is_hovered(cx) {
387 return;
388 }
389
390 editor.update_hovered_link(
391 position_map.point_for_position(text_hitbox.bounds, mouse_position),
392 &position_map.snapshot,
393 event.modifiers,
394 cx,
395 )
396 }
397
398 fn mouse_left_down(
399 editor: &mut Editor,
400 event: &MouseDownEvent,
401 position_map: &PositionMap,
402 text_hitbox: &Hitbox,
403 gutter_hitbox: &Hitbox,
404 cx: &mut ViewContext<Editor>,
405 ) {
406 if cx.default_prevented() {
407 return;
408 }
409
410 let mut click_count = event.click_count;
411 let mut modifiers = event.modifiers;
412
413 if gutter_hitbox.is_hovered(cx) {
414 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
415 } else if !text_hitbox.is_hovered(cx) {
416 return;
417 }
418
419 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
420 match EditorSettings::get_global(cx).double_click_in_multibuffer {
421 DoubleClickInMultibuffer::Select => {
422 // do nothing special on double click, all selection logic is below
423 }
424 DoubleClickInMultibuffer::Open => {
425 if modifiers.alt {
426 // if double click is made with alt, pretend it's a regular double click without opening and alt,
427 // and run the selection logic.
428 modifiers.alt = false;
429 } else {
430 // if double click is made without alt, open the corresponding excerp
431 editor.open_excerpts(&OpenExcerpts, cx);
432 return;
433 }
434 }
435 }
436 }
437
438 let point_for_position =
439 position_map.point_for_position(text_hitbox.bounds, event.position);
440 let position = point_for_position.previous_valid;
441 if modifiers.shift && modifiers.alt {
442 editor.select(
443 SelectPhase::BeginColumnar {
444 position,
445 goal_column: point_for_position.exact_unclipped.column(),
446 },
447 cx,
448 );
449 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
450 editor.select(
451 SelectPhase::Extend {
452 position,
453 click_count,
454 },
455 cx,
456 );
457 } else {
458 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
459 let multi_cursor_modifier = match multi_cursor_setting {
460 MultiCursorModifier::Alt => modifiers.alt,
461 MultiCursorModifier::Cmd => modifiers.command,
462 };
463 editor.select(
464 SelectPhase::Begin {
465 position,
466 add: multi_cursor_modifier,
467 click_count,
468 },
469 cx,
470 );
471 }
472
473 cx.stop_propagation();
474 }
475
476 fn mouse_right_down(
477 editor: &mut Editor,
478 event: &MouseDownEvent,
479 position_map: &PositionMap,
480 text_hitbox: &Hitbox,
481 cx: &mut ViewContext<Editor>,
482 ) {
483 if !text_hitbox.is_hovered(cx) {
484 return;
485 }
486 let point_for_position =
487 position_map.point_for_position(text_hitbox.bounds, event.position);
488 mouse_context_menu::deploy_context_menu(
489 editor,
490 event.position,
491 point_for_position.previous_valid,
492 cx,
493 );
494 cx.stop_propagation();
495 }
496
497 fn mouse_up(
498 editor: &mut Editor,
499 event: &MouseUpEvent,
500 position_map: &PositionMap,
501 text_hitbox: &Hitbox,
502 cx: &mut ViewContext<Editor>,
503 ) {
504 let end_selection = editor.has_pending_selection();
505 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
506
507 if end_selection {
508 editor.select(SelectPhase::End, cx);
509 }
510
511 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
512 let multi_cursor_modifier = match multi_cursor_setting {
513 MultiCursorModifier::Alt => event.modifiers.command,
514 MultiCursorModifier::Cmd => event.modifiers.alt,
515 };
516
517 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
518 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
519 editor.handle_click_hovered_link(point, event.modifiers, cx);
520
521 cx.stop_propagation();
522 } else if end_selection {
523 cx.stop_propagation();
524 }
525 }
526
527 fn mouse_dragged(
528 editor: &mut Editor,
529 event: &MouseMoveEvent,
530 position_map: &PositionMap,
531 text_bounds: Bounds<Pixels>,
532 cx: &mut ViewContext<Editor>,
533 ) {
534 if !editor.has_pending_selection() {
535 return;
536 }
537
538 let point_for_position = position_map.point_for_position(text_bounds, event.position);
539 let mut scroll_delta = gpui::Point::<f32>::default();
540 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
541 let top = text_bounds.origin.y + vertical_margin;
542 let bottom = text_bounds.lower_left().y - vertical_margin;
543 if event.position.y < top {
544 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
545 }
546 if event.position.y > bottom {
547 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
548 }
549
550 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
551 let left = text_bounds.origin.x + horizontal_margin;
552 let right = text_bounds.upper_right().x - horizontal_margin;
553 if event.position.x < left {
554 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
555 }
556 if event.position.x > right {
557 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
558 }
559
560 editor.select(
561 SelectPhase::Update {
562 position: point_for_position.previous_valid,
563 goal_column: point_for_position.exact_unclipped.column(),
564 scroll_delta,
565 },
566 cx,
567 );
568 }
569
570 fn mouse_moved(
571 editor: &mut Editor,
572 event: &MouseMoveEvent,
573 position_map: &PositionMap,
574 text_hitbox: &Hitbox,
575 gutter_hitbox: &Hitbox,
576 cx: &mut ViewContext<Editor>,
577 ) {
578 let modifiers = event.modifiers;
579 let gutter_hovered = gutter_hitbox.is_hovered(cx);
580 editor.set_gutter_hovered(gutter_hovered, cx);
581
582 // Don't trigger hover popover if mouse is hovering over context menu
583 if text_hitbox.is_hovered(cx) {
584 let point_for_position =
585 position_map.point_for_position(text_hitbox.bounds, event.position);
586
587 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
588
589 if let Some(point) = point_for_position.as_valid() {
590 hover_at(editor, Some(point), cx);
591 Self::update_visible_cursor(editor, point, position_map, cx);
592 } else {
593 hover_at(editor, None, cx);
594 }
595 } else {
596 editor.hide_hovered_link(cx);
597 hover_at(editor, None, cx);
598 if gutter_hovered {
599 cx.stop_propagation();
600 }
601 }
602 }
603
604 fn update_visible_cursor(
605 editor: &mut Editor,
606 point: DisplayPoint,
607 position_map: &PositionMap,
608 cx: &mut ViewContext<Editor>,
609 ) {
610 let snapshot = &position_map.snapshot;
611 let Some(hub) = editor.collaboration_hub() else {
612 return;
613 };
614 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
615 ..DisplayPoint::new(
616 point.row(),
617 (point.column() + 1).min(snapshot.line_len(point.row())),
618 );
619
620 let range = snapshot
621 .buffer_snapshot
622 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
623 ..snapshot
624 .buffer_snapshot
625 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
626
627 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
628 return;
629 };
630 let key = crate::HoveredCursor {
631 replica_id: selection.replica_id,
632 selection_id: selection.selection.id,
633 };
634 editor.hovered_cursors.insert(
635 key.clone(),
636 cx.spawn(|editor, mut cx| async move {
637 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
638 editor
639 .update(&mut cx, |editor, cx| {
640 editor.hovered_cursors.remove(&key);
641 cx.notify();
642 })
643 .ok();
644 }),
645 );
646 cx.notify()
647 }
648
649 fn layout_selections(
650 &self,
651 start_anchor: Anchor,
652 end_anchor: Anchor,
653 snapshot: &EditorSnapshot,
654 start_row: u32,
655 end_row: u32,
656 cx: &mut ElementContext,
657 ) -> (
658 Vec<(PlayerColor, Vec<SelectionLayout>)>,
659 BTreeMap<u32, bool>,
660 Option<DisplayPoint>,
661 ) {
662 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
663 let mut active_rows = BTreeMap::new();
664 let mut newest_selection_head = None;
665 let editor = self.editor.read(cx);
666
667 if editor.show_local_selections {
668 let mut local_selections: Vec<Selection<Point>> = editor
669 .selections
670 .disjoint_in_range(start_anchor..end_anchor, cx);
671 local_selections.extend(editor.selections.pending(cx));
672 let mut layouts = Vec::new();
673 let newest = editor.selections.newest(cx);
674 for selection in local_selections.drain(..) {
675 let is_empty = selection.start == selection.end;
676 let is_newest = selection == newest;
677
678 let layout = SelectionLayout::new(
679 selection,
680 editor.selections.line_mode,
681 editor.cursor_shape,
682 &snapshot.display_snapshot,
683 is_newest,
684 editor.leader_peer_id.is_none(),
685 None,
686 );
687 if is_newest {
688 newest_selection_head = Some(layout.head);
689 }
690
691 for row in cmp::max(layout.active_rows.start, start_row)
692 ..=cmp::min(layout.active_rows.end, end_row)
693 {
694 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
695 *contains_non_empty_selection |= !is_empty;
696 }
697 layouts.push(layout);
698 }
699
700 let player = if editor.read_only(cx) {
701 cx.theme().players().read_only()
702 } else {
703 self.style.local_player
704 };
705
706 selections.push((player, layouts));
707 }
708
709 if let Some(collaboration_hub) = &editor.collaboration_hub {
710 // When following someone, render the local selections in their color.
711 if let Some(leader_id) = editor.leader_peer_id {
712 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
713 if let Some(participant_index) = collaboration_hub
714 .user_participant_indices(cx)
715 .get(&collaborator.user_id)
716 {
717 if let Some((local_selection_style, _)) = selections.first_mut() {
718 *local_selection_style = cx
719 .theme()
720 .players()
721 .color_for_participant(participant_index.0);
722 }
723 }
724 }
725 }
726
727 let mut remote_selections = HashMap::default();
728 for selection in snapshot.remote_selections_in_range(
729 &(start_anchor..end_anchor),
730 collaboration_hub.as_ref(),
731 cx,
732 ) {
733 let selection_style = if let Some(participant_index) = selection.participant_index {
734 cx.theme()
735 .players()
736 .color_for_participant(participant_index.0)
737 } else {
738 cx.theme().players().absent()
739 };
740
741 // Don't re-render the leader's selections, since the local selections
742 // match theirs.
743 if Some(selection.peer_id) == editor.leader_peer_id {
744 continue;
745 }
746 let key = HoveredCursor {
747 replica_id: selection.replica_id,
748 selection_id: selection.selection.id,
749 };
750
751 let is_shown =
752 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
753
754 remote_selections
755 .entry(selection.replica_id)
756 .or_insert((selection_style, Vec::new()))
757 .1
758 .push(SelectionLayout::new(
759 selection.selection,
760 selection.line_mode,
761 selection.cursor_shape,
762 &snapshot.display_snapshot,
763 false,
764 false,
765 if is_shown { selection.user_name } else { None },
766 ));
767 }
768
769 selections.extend(remote_selections.into_values());
770 }
771 (selections, active_rows, newest_selection_head)
772 }
773
774 #[allow(clippy::too_many_arguments)]
775 fn layout_folds(
776 &self,
777 snapshot: &EditorSnapshot,
778 content_origin: gpui::Point<Pixels>,
779 visible_anchor_range: Range<Anchor>,
780 visible_display_row_range: Range<u32>,
781 scroll_pixel_position: gpui::Point<Pixels>,
782 line_height: Pixels,
783 line_layouts: &[LineWithInvisibles],
784 cx: &mut ElementContext,
785 ) -> Vec<FoldLayout> {
786 snapshot
787 .folds_in_range(visible_anchor_range.clone())
788 .filter_map(|fold| {
789 let fold_range = fold.range.clone();
790 let display_range = fold.range.start.to_display_point(&snapshot)
791 ..fold.range.end.to_display_point(&snapshot);
792 debug_assert_eq!(display_range.start.row(), display_range.end.row());
793 let row = display_range.start.row();
794 debug_assert!(row < visible_display_row_range.end);
795 let line_layout = line_layouts
796 .get((row - visible_display_row_range.start) as usize)
797 .map(|l| &l.line)?;
798
799 let start_x = content_origin.x
800 + line_layout.x_for_index(display_range.start.column() as usize)
801 - scroll_pixel_position.x;
802 let start_y = content_origin.y + row as f32 * line_height - scroll_pixel_position.y;
803 let end_x = content_origin.x
804 + line_layout.x_for_index(display_range.end.column() as usize)
805 - scroll_pixel_position.x;
806
807 let fold_bounds = Bounds {
808 origin: point(start_x, start_y),
809 size: size(end_x - start_x, line_height),
810 };
811
812 let mut hover_element = div()
813 .id(fold.id)
814 .size_full()
815 .cursor_pointer()
816 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
817 .on_click(
818 cx.listener_for(&self.editor, move |editor: &mut Editor, _, cx| {
819 editor.unfold_ranges(
820 [fold_range.start..fold_range.end],
821 true,
822 false,
823 cx,
824 );
825 cx.stop_propagation();
826 }),
827 )
828 .into_any();
829 hover_element.layout(fold_bounds.origin, fold_bounds.size.into(), cx);
830 Some(FoldLayout {
831 display_range,
832 hover_element,
833 })
834 })
835 .collect()
836 }
837
838 #[allow(clippy::too_many_arguments)]
839 fn layout_cursors(
840 &self,
841 snapshot: &EditorSnapshot,
842 selections: &[(PlayerColor, Vec<SelectionLayout>)],
843 visible_display_row_range: Range<u32>,
844 line_layouts: &[LineWithInvisibles],
845 text_hitbox: &Hitbox,
846 content_origin: gpui::Point<Pixels>,
847 scroll_pixel_position: gpui::Point<Pixels>,
848 line_height: Pixels,
849 em_width: Pixels,
850 cx: &mut ElementContext,
851 ) -> Vec<CursorLayout> {
852 self.editor.update(cx, |editor, cx| {
853 let mut cursors = Vec::new();
854 for (player_color, selections) in selections {
855 for selection in selections {
856 let cursor_position = selection.head;
857 if (selection.is_local && !editor.show_local_cursors(cx))
858 || !visible_display_row_range.contains(&cursor_position.row())
859 {
860 continue;
861 }
862
863 let cursor_row_layout = &line_layouts
864 [(cursor_position.row() - visible_display_row_range.start) as usize]
865 .line;
866 let cursor_column = cursor_position.column() as usize;
867
868 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
869 let mut block_width =
870 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
871 if block_width == Pixels::ZERO {
872 block_width = em_width;
873 }
874 let block_text = if let CursorShape::Block = selection.cursor_shape {
875 snapshot
876 .chars_at(cursor_position)
877 .next()
878 .and_then(|(character, _)| {
879 let text = if character == '\n' {
880 SharedString::from(" ")
881 } else {
882 SharedString::from(character.to_string())
883 };
884 let len = text.len();
885 cx.text_system()
886 .shape_line(
887 text,
888 cursor_row_layout.font_size,
889 &[TextRun {
890 len,
891 font: self.style.text.font(),
892 color: self.style.background,
893 background_color: None,
894 strikethrough: None,
895 underline: None,
896 }],
897 )
898 .log_err()
899 })
900 } else {
901 None
902 };
903
904 let x = cursor_character_x - scroll_pixel_position.x;
905 let y = (cursor_position.row() as f32 - scroll_pixel_position.y / line_height)
906 * line_height;
907 if selection.is_newest {
908 editor.pixel_position_of_newest_cursor = Some(point(
909 text_hitbox.origin.x + x + block_width / 2.,
910 text_hitbox.origin.y + y + line_height / 2.,
911 ))
912 }
913
914 let mut cursor = CursorLayout {
915 color: player_color.cursor,
916 block_width,
917 origin: point(x, y),
918 line_height,
919 shape: selection.cursor_shape,
920 block_text,
921 cursor_name: None,
922 };
923 let cursor_name = selection.user_name.clone().map(|name| CursorName {
924 string: name,
925 color: self.style.background,
926 is_top_row: cursor_position.row() == 0,
927 });
928 cx.with_element_context(|cx| cursor.layout(content_origin, cursor_name, cx));
929 cursors.push(cursor);
930 }
931 }
932 cursors
933 })
934 }
935
936 fn layout_scrollbar(
937 &self,
938 snapshot: &EditorSnapshot,
939 bounds: Bounds<Pixels>,
940 scroll_position: gpui::Point<f32>,
941 line_height: Pixels,
942 height_in_lines: f32,
943 cx: &mut ElementContext,
944 ) -> Option<ScrollbarLayout> {
945 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
946 let show_scrollbars = match scrollbar_settings.show {
947 ShowScrollbar::Auto => {
948 let editor = self.editor.read(cx);
949 let is_singleton = editor.is_singleton(cx);
950 // Git
951 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
952 ||
953 // Selections
954 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
955 ||
956 // Symbols Selections
957 (is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
958 ||
959 // Diagnostics
960 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
961 ||
962 // Scrollmanager
963 editor.scroll_manager.scrollbars_visible()
964 }
965 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
966 ShowScrollbar::Always => true,
967 ShowScrollbar::Never => false,
968 };
969 if snapshot.mode != EditorMode::Full {
970 return None;
971 }
972
973 let visible_row_range = scroll_position.y..scroll_position.y + height_in_lines;
974
975 // If a drag took place after we started dragging the scrollbar,
976 // cancel the scrollbar drag.
977 if cx.has_active_drag() {
978 self.editor.update(cx, |editor, cx| {
979 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
980 });
981 }
982
983 let track_bounds = Bounds::from_corners(
984 point(self.scrollbar_left(&bounds), bounds.origin.y),
985 point(bounds.lower_right().x, bounds.lower_left().y),
986 );
987
988 let scroll_height = snapshot.max_point().row() as f32 + height_in_lines;
989 let mut height = bounds.size.height;
990 let mut first_row_y_offset = px(0.0);
991
992 // Impose a minimum height on the scrollbar thumb
993 let row_height = height / scroll_height;
994 let min_thumb_height = line_height;
995 let thumb_height = height_in_lines * row_height;
996 if thumb_height < min_thumb_height {
997 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
998 height -= min_thumb_height - thumb_height;
999 }
1000
1001 Some(ScrollbarLayout {
1002 hitbox: cx.insert_hitbox(track_bounds, false),
1003 visible_row_range,
1004 height,
1005 scroll_height,
1006 first_row_y_offset,
1007 row_height,
1008 visible: show_scrollbars,
1009 })
1010 }
1011
1012 #[allow(clippy::too_many_arguments)]
1013 fn layout_gutter_fold_indicators(
1014 &self,
1015 fold_statuses: Vec<Option<(FoldStatus, u32, bool)>>,
1016 line_height: Pixels,
1017 gutter_dimensions: &GutterDimensions,
1018 gutter_settings: crate::editor_settings::Gutter,
1019 scroll_pixel_position: gpui::Point<Pixels>,
1020 gutter_hitbox: &Hitbox,
1021 cx: &mut ElementContext,
1022 ) -> Vec<Option<AnyElement>> {
1023 let mut indicators = self.editor.update(cx, |editor, cx| {
1024 editor.render_fold_indicators(
1025 fold_statuses,
1026 &self.style,
1027 editor.gutter_hovered,
1028 line_height,
1029 gutter_dimensions.margin,
1030 cx,
1031 )
1032 });
1033
1034 for (ix, fold_indicator) in indicators.iter_mut().enumerate() {
1035 if let Some(fold_indicator) = fold_indicator {
1036 debug_assert!(gutter_settings.folds);
1037 let available_space = size(
1038 AvailableSpace::MinContent,
1039 AvailableSpace::Definite(line_height * 0.55),
1040 );
1041 let fold_indicator_size = fold_indicator.measure(available_space, cx);
1042
1043 let position = point(
1044 gutter_dimensions.width - gutter_dimensions.right_padding,
1045 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1046 );
1047 let centering_offset = point(
1048 (gutter_dimensions.right_padding + gutter_dimensions.margin
1049 - fold_indicator_size.width)
1050 / 2.,
1051 (line_height - fold_indicator_size.height) / 2.,
1052 );
1053 let origin = gutter_hitbox.origin + position + centering_offset;
1054 fold_indicator.layout(origin, available_space, cx);
1055 }
1056 }
1057
1058 indicators
1059 }
1060
1061 //Folds contained in a hunk are ignored apart from shrinking visual size
1062 //If a fold contains any hunks then that fold line is marked as modified
1063 fn layout_git_gutters(
1064 &self,
1065 display_rows: Range<u32>,
1066 snapshot: &EditorSnapshot,
1067 ) -> Vec<DisplayDiffHunk> {
1068 let buffer_snapshot = &snapshot.buffer_snapshot;
1069
1070 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1071 .to_point(snapshot)
1072 .row;
1073 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1074 .to_point(snapshot)
1075 .row;
1076
1077 buffer_snapshot
1078 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1079 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1080 .dedup()
1081 .collect()
1082 }
1083
1084 fn layout_code_actions_indicator(
1085 &self,
1086 line_height: Pixels,
1087 newest_selection_head: DisplayPoint,
1088 scroll_pixel_position: gpui::Point<Pixels>,
1089 gutter_dimensions: &GutterDimensions,
1090 gutter_hitbox: &Hitbox,
1091 cx: &mut ElementContext,
1092 ) -> Option<AnyElement> {
1093 let mut active = false;
1094 let mut button = None;
1095 self.editor.update(cx, |editor, cx| {
1096 active = matches!(
1097 editor.context_menu.read().as_ref(),
1098 Some(crate::ContextMenu::CodeActions(_))
1099 );
1100 button = editor.render_code_actions_indicator(&self.style, active, cx);
1101 });
1102
1103 let mut button = button?.into_any_element();
1104 let available_space = size(
1105 AvailableSpace::MinContent,
1106 AvailableSpace::Definite(line_height),
1107 );
1108 let indicator_size = button.measure(available_space, cx);
1109
1110 let mut x = Pixels::ZERO;
1111 let mut y = newest_selection_head.row() as f32 * line_height - scroll_pixel_position.y;
1112 // Center indicator.
1113 x +=
1114 (gutter_dimensions.margin + gutter_dimensions.left_padding - indicator_size.width) / 2.;
1115 y += (line_height - indicator_size.height) / 2.;
1116 button.layout(gutter_hitbox.origin + point(x, y), available_space, cx);
1117 Some(button)
1118 }
1119
1120 fn calculate_relative_line_numbers(
1121 &self,
1122 snapshot: &EditorSnapshot,
1123 rows: &Range<u32>,
1124 relative_to: Option<u32>,
1125 ) -> HashMap<u32, u32> {
1126 let mut relative_rows: HashMap<u32, u32> = Default::default();
1127 let Some(relative_to) = relative_to else {
1128 return relative_rows;
1129 };
1130
1131 let start = rows.start.min(relative_to);
1132 let end = rows.end.max(relative_to);
1133
1134 let buffer_rows = snapshot
1135 .buffer_rows(start)
1136 .take(1 + (end - start) as usize)
1137 .collect::<Vec<_>>();
1138
1139 let head_idx = relative_to - start;
1140 let mut delta = 1;
1141 let mut i = head_idx + 1;
1142 while i < buffer_rows.len() as u32 {
1143 if buffer_rows[i as usize].is_some() {
1144 if rows.contains(&(i + start)) {
1145 relative_rows.insert(i + start, delta);
1146 }
1147 delta += 1;
1148 }
1149 i += 1;
1150 }
1151 delta = 1;
1152 i = head_idx.min(buffer_rows.len() as u32 - 1);
1153 while i > 0 && buffer_rows[i as usize].is_none() {
1154 i -= 1;
1155 }
1156
1157 while i > 0 {
1158 i -= 1;
1159 if buffer_rows[i as usize].is_some() {
1160 if rows.contains(&(i + start)) {
1161 relative_rows.insert(i + start, delta);
1162 }
1163 delta += 1;
1164 }
1165 }
1166
1167 relative_rows
1168 }
1169
1170 fn layout_line_numbers(
1171 &self,
1172 rows: Range<u32>,
1173 active_rows: &BTreeMap<u32, bool>,
1174 newest_selection_head: Option<DisplayPoint>,
1175 snapshot: &EditorSnapshot,
1176 cx: &ElementContext,
1177 ) -> (
1178 Vec<Option<ShapedLine>>,
1179 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1180 ) {
1181 let editor = self.editor.read(cx);
1182 let is_singleton = editor.is_singleton(cx);
1183 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1184 let newest = editor.selections.newest::<Point>(cx);
1185 SelectionLayout::new(
1186 newest,
1187 editor.selections.line_mode,
1188 editor.cursor_shape,
1189 &snapshot.display_snapshot,
1190 true,
1191 true,
1192 None,
1193 )
1194 .head
1195 });
1196 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1197 let include_line_numbers =
1198 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full;
1199 let include_fold_statuses =
1200 EditorSettings::get_global(cx).gutter.folds && snapshot.mode == EditorMode::Full;
1201 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1202 let mut fold_statuses = Vec::with_capacity(rows.len());
1203 let mut line_number = String::new();
1204 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1205 let relative_to = if is_relative {
1206 Some(newest_selection_head.row())
1207 } else {
1208 None
1209 };
1210
1211 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1212
1213 for (ix, row) in snapshot
1214 .buffer_rows(rows.start)
1215 .take((rows.end - rows.start) as usize)
1216 .enumerate()
1217 {
1218 let display_row = rows.start + ix as u32;
1219 let (active, color) = if active_rows.contains_key(&display_row) {
1220 (true, cx.theme().colors().editor_active_line_number)
1221 } else {
1222 (false, cx.theme().colors().editor_line_number)
1223 };
1224 if let Some(buffer_row) = row {
1225 if include_line_numbers {
1226 line_number.clear();
1227 let default_number = buffer_row + 1;
1228 let number = relative_rows
1229 .get(&(ix as u32 + rows.start))
1230 .unwrap_or(&default_number);
1231 write!(&mut line_number, "{}", number).unwrap();
1232 let run = TextRun {
1233 len: line_number.len(),
1234 font: self.style.text.font(),
1235 color,
1236 background_color: None,
1237 underline: None,
1238 strikethrough: None,
1239 };
1240 let shaped_line = cx
1241 .text_system()
1242 .shape_line(line_number.clone().into(), font_size, &[run])
1243 .unwrap();
1244 shaped_line_numbers.push(Some(shaped_line));
1245 }
1246 if include_fold_statuses {
1247 fold_statuses.push(
1248 is_singleton
1249 .then(|| {
1250 snapshot
1251 .fold_for_line(buffer_row)
1252 .map(|fold_status| (fold_status, buffer_row, active))
1253 })
1254 .flatten(),
1255 )
1256 }
1257 } else {
1258 fold_statuses.push(None);
1259 shaped_line_numbers.push(None);
1260 }
1261 }
1262
1263 (shaped_line_numbers, fold_statuses)
1264 }
1265
1266 fn layout_lines(
1267 &self,
1268 rows: Range<u32>,
1269 line_number_layouts: &[Option<ShapedLine>],
1270 snapshot: &EditorSnapshot,
1271 cx: &ElementContext,
1272 ) -> Vec<LineWithInvisibles> {
1273 if rows.start >= rows.end {
1274 return Vec::new();
1275 }
1276
1277 // Show the placeholder when the editor is empty
1278 if snapshot.is_empty() {
1279 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1280 let placeholder_color = cx.theme().colors().text_placeholder;
1281 let placeholder_text = snapshot.placeholder_text();
1282
1283 let placeholder_lines = placeholder_text
1284 .as_ref()
1285 .map_or("", AsRef::as_ref)
1286 .split('\n')
1287 .skip(rows.start as usize)
1288 .chain(iter::repeat(""))
1289 .take(rows.len());
1290 placeholder_lines
1291 .filter_map(move |line| {
1292 let run = TextRun {
1293 len: line.len(),
1294 font: self.style.text.font(),
1295 color: placeholder_color,
1296 background_color: None,
1297 underline: Default::default(),
1298 strikethrough: None,
1299 };
1300 cx.text_system()
1301 .shape_line(line.to_string().into(), font_size, &[run])
1302 .log_err()
1303 })
1304 .map(|line| LineWithInvisibles {
1305 line,
1306 invisibles: Vec::new(),
1307 })
1308 .collect()
1309 } else {
1310 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1311 LineWithInvisibles::from_chunks(
1312 chunks,
1313 &self.style.text,
1314 MAX_LINE_LEN,
1315 rows.len(),
1316 line_number_layouts,
1317 snapshot.mode,
1318 cx,
1319 )
1320 }
1321 }
1322
1323 #[allow(clippy::too_many_arguments)]
1324 fn build_blocks(
1325 &self,
1326 rows: Range<u32>,
1327 snapshot: &EditorSnapshot,
1328 hitbox: &Hitbox,
1329 text_hitbox: &Hitbox,
1330 scroll_width: &mut Pixels,
1331 gutter_dimensions: &GutterDimensions,
1332 em_width: Pixels,
1333 text_x: Pixels,
1334 line_height: Pixels,
1335 line_layouts: &[LineWithInvisibles],
1336 cx: &mut ElementContext,
1337 ) -> Vec<BlockLayout> {
1338 let mut block_id = 0;
1339 let (fixed_blocks, non_fixed_blocks) = snapshot
1340 .blocks_in_range(rows.clone())
1341 .partition::<Vec<_>, _>(|(_, block)| match block {
1342 TransformBlock::ExcerptHeader { .. } => false,
1343 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1344 });
1345
1346 let render_block = |block: &TransformBlock,
1347 available_space: Size<AvailableSpace>,
1348 block_id: usize,
1349 cx: &mut ElementContext| {
1350 let mut element = match block {
1351 TransformBlock::Custom(block) => {
1352 let align_to = block
1353 .position()
1354 .to_point(&snapshot.buffer_snapshot)
1355 .to_display_point(snapshot);
1356 let anchor_x = text_x
1357 + if rows.contains(&align_to.row()) {
1358 line_layouts[(align_to.row() - rows.start) as usize]
1359 .line
1360 .x_for_index(align_to.column() as usize)
1361 } else {
1362 layout_line(align_to.row(), snapshot, &self.style, cx)
1363 .unwrap()
1364 .x_for_index(align_to.column() as usize)
1365 };
1366
1367 block.render(&mut BlockContext {
1368 context: cx,
1369 anchor_x,
1370 gutter_dimensions,
1371 line_height,
1372 em_width,
1373 block_id,
1374 max_width: text_hitbox.size.width.max(*scroll_width),
1375 editor_style: &self.style,
1376 })
1377 }
1378
1379 TransformBlock::ExcerptHeader {
1380 buffer,
1381 range,
1382 starts_new_buffer,
1383 ..
1384 } => {
1385 let include_root = self
1386 .editor
1387 .read(cx)
1388 .project
1389 .as_ref()
1390 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1391 .unwrap_or_default();
1392
1393 #[derive(Clone)]
1394 struct JumpData {
1395 position: Point,
1396 anchor: text::Anchor,
1397 path: ProjectPath,
1398 }
1399
1400 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
1401 let jump_path = ProjectPath {
1402 worktree_id: file.worktree_id(cx),
1403 path: file.path.clone(),
1404 };
1405 let jump_anchor = range
1406 .primary
1407 .as_ref()
1408 .map_or(range.context.start, |primary| primary.start);
1409 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
1410
1411 JumpData {
1412 position: jump_position,
1413 anchor: jump_anchor,
1414 path: jump_path,
1415 }
1416 });
1417
1418 let element = if *starts_new_buffer {
1419 let path = buffer.resolve_file_path(cx, include_root);
1420 let mut filename = None;
1421 let mut parent_path = None;
1422 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
1423 if let Some(path) = path {
1424 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
1425 parent_path = path
1426 .parent()
1427 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
1428 }
1429
1430 v_flex()
1431 .id(("path header container", block_id))
1432 .size_full()
1433 .justify_center()
1434 .p(gpui::px(6.))
1435 .child(
1436 h_flex()
1437 .id("path header block")
1438 .size_full()
1439 .pl(gpui::px(12.))
1440 .pr(gpui::px(8.))
1441 .rounded_md()
1442 .shadow_md()
1443 .border()
1444 .border_color(cx.theme().colors().border)
1445 .bg(cx.theme().colors().editor_subheader_background)
1446 .justify_between()
1447 .hover(|style| style.bg(cx.theme().colors().element_hover))
1448 .child(
1449 h_flex().gap_3().child(
1450 h_flex()
1451 .gap_2()
1452 .child(
1453 filename
1454 .map(SharedString::from)
1455 .unwrap_or_else(|| "untitled".into()),
1456 )
1457 .when_some(parent_path, |then, path| {
1458 then.child(
1459 div().child(path).text_color(
1460 cx.theme().colors().text_muted,
1461 ),
1462 )
1463 }),
1464 ),
1465 )
1466 .when_some(jump_data.clone(), |this, jump_data| {
1467 this.cursor_pointer()
1468 .tooltip(|cx| {
1469 Tooltip::for_action(
1470 "Jump to File",
1471 &OpenExcerpts,
1472 cx,
1473 )
1474 })
1475 .on_mouse_down(MouseButton::Left, |_, cx| {
1476 cx.stop_propagation()
1477 })
1478 .on_click(cx.listener_for(&self.editor, {
1479 move |editor, _, cx| {
1480 editor.jump(
1481 jump_data.path.clone(),
1482 jump_data.position,
1483 jump_data.anchor,
1484 cx,
1485 );
1486 }
1487 }))
1488 }),
1489 )
1490 } else {
1491 v_flex()
1492 .id(("collapsed context", block_id))
1493 .size_full()
1494 .child(
1495 div()
1496 .flex()
1497 .v_flex()
1498 .justify_start()
1499 .id("jump to collapsed context")
1500 .w(relative(1.0))
1501 .h_full()
1502 .child(
1503 div()
1504 .h_px()
1505 .w_full()
1506 .bg(cx.theme().colors().border_variant)
1507 .group_hover("excerpt-jump-action", |style| {
1508 style.bg(cx.theme().colors().border)
1509 }),
1510 ),
1511 )
1512 .child(
1513 h_flex()
1514 .justify_end()
1515 .flex_none()
1516 .w(
1517 gutter_dimensions.width - (gutter_dimensions.left_padding), // + gutter_dimensions.right_padding)
1518 )
1519 .h_full()
1520 .child(
1521 ButtonLike::new("jump-icon")
1522 .style(ButtonStyle::Transparent)
1523 .child(
1524 svg()
1525 .path(IconName::ArrowUpRight.path())
1526 .size(IconSize::XSmall.rems())
1527 .text_color(cx.theme().colors().border)
1528 .group_hover("excerpt-jump-action", |style| {
1529 style.text_color(
1530 cx.theme().colors().editor_line_number,
1531 )
1532 }),
1533 )
1534 .when_some(jump_data.clone(), |this, jump_data| {
1535 this.on_click(cx.listener_for(&self.editor, {
1536 let path = jump_data.path.clone();
1537 move |editor, _, cx| {
1538 editor.jump(
1539 path.clone(),
1540 jump_data.position,
1541 jump_data.anchor,
1542 cx,
1543 );
1544 }
1545 }))
1546 .tooltip({
1547 move |cx| {
1548 Tooltip::for_action(
1549 format!(
1550 "Jump to {}:L{}",
1551 jump_data.path.path.display(),
1552 jump_data.position.row + 1
1553 ),
1554 &OpenExcerpts,
1555 cx,
1556 )
1557 }
1558 })
1559 }),
1560 ),
1561 )
1562 .group("excerpt-jump-action")
1563 .cursor_pointer()
1564 .when_some(jump_data.clone(), |this, jump_data| {
1565 this.on_click(cx.listener_for(&self.editor, {
1566 let path = jump_data.path.clone();
1567 move |editor, _, cx| {
1568 cx.stop_propagation();
1569
1570 editor.jump(
1571 path.clone(),
1572 jump_data.position,
1573 jump_data.anchor,
1574 cx,
1575 );
1576 }
1577 }))
1578 .tooltip(move |cx| {
1579 Tooltip::for_action(
1580 format!(
1581 "Jump to {}:L{}",
1582 jump_data.path.path.display(),
1583 jump_data.position.row + 1
1584 ),
1585 &OpenExcerpts,
1586 cx,
1587 )
1588 })
1589 })
1590 };
1591 element.into_any()
1592 }
1593 };
1594
1595 let size = element.measure(available_space, cx);
1596 (element, size)
1597 };
1598
1599 let mut fixed_block_max_width = Pixels::ZERO;
1600 let mut blocks = Vec::new();
1601 for (row, block) in fixed_blocks {
1602 let available_space = size(
1603 AvailableSpace::MinContent,
1604 AvailableSpace::Definite(block.height() as f32 * line_height),
1605 );
1606 let (element, element_size) = render_block(block, available_space, block_id, cx);
1607 block_id += 1;
1608 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
1609 blocks.push(BlockLayout {
1610 row,
1611 element,
1612 available_space,
1613 style: BlockStyle::Fixed,
1614 });
1615 }
1616 for (row, block) in non_fixed_blocks {
1617 let style = match block {
1618 TransformBlock::Custom(block) => block.style(),
1619 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
1620 };
1621 let width = match style {
1622 BlockStyle::Sticky => hitbox.size.width,
1623 BlockStyle::Flex => hitbox
1624 .size
1625 .width
1626 .max(fixed_block_max_width)
1627 .max(gutter_dimensions.width + *scroll_width),
1628 BlockStyle::Fixed => unreachable!(),
1629 };
1630 let available_space = size(
1631 AvailableSpace::Definite(width),
1632 AvailableSpace::Definite(block.height() as f32 * line_height),
1633 );
1634 let (element, _) = render_block(block, available_space, block_id, cx);
1635 block_id += 1;
1636 blocks.push(BlockLayout {
1637 row,
1638 element,
1639 available_space,
1640 style,
1641 });
1642 }
1643
1644 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
1645 blocks
1646 }
1647
1648 fn layout_blocks(
1649 &self,
1650 blocks: &mut Vec<BlockLayout>,
1651 hitbox: &Hitbox,
1652 line_height: Pixels,
1653 scroll_pixel_position: gpui::Point<Pixels>,
1654 cx: &mut ElementContext,
1655 ) {
1656 for block in blocks {
1657 let mut origin = hitbox.origin
1658 + point(
1659 Pixels::ZERO,
1660 block.row as f32 * line_height - scroll_pixel_position.y,
1661 );
1662 if !matches!(block.style, BlockStyle::Sticky) {
1663 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
1664 }
1665 block.element.layout(origin, block.available_space, cx);
1666 }
1667 }
1668
1669 #[allow(clippy::too_many_arguments)]
1670 fn layout_context_menu(
1671 &self,
1672 line_height: Pixels,
1673 hitbox: &Hitbox,
1674 text_hitbox: &Hitbox,
1675 content_origin: gpui::Point<Pixels>,
1676 start_row: u32,
1677 scroll_pixel_position: gpui::Point<Pixels>,
1678 line_layouts: &[LineWithInvisibles],
1679 newest_selection_head: DisplayPoint,
1680 cx: &mut ElementContext,
1681 ) -> bool {
1682 let max_height = cmp::min(
1683 12. * line_height,
1684 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
1685 );
1686 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
1687 if editor.context_menu_visible() {
1688 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
1689 } else {
1690 None
1691 }
1692 }) else {
1693 return false;
1694 };
1695
1696 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1697 let context_menu_size = context_menu.measure(available_space, cx);
1698
1699 let cursor_row_layout = &line_layouts[(position.row() - start_row) as usize].line;
1700 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1701 let y = (position.row() + 1) as f32 * line_height - scroll_pixel_position.y;
1702 let mut list_origin = content_origin + point(x, y);
1703 let list_width = context_menu_size.width;
1704 let list_height = context_menu_size.height;
1705
1706 // Snap the right edge of the list to the right edge of the window if
1707 // its horizontal bounds overflow.
1708 if list_origin.x + list_width > cx.viewport_size().width {
1709 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1710 }
1711
1712 if list_origin.y + list_height > text_hitbox.lower_right().y {
1713 list_origin.y -= line_height + list_height;
1714 }
1715
1716 cx.defer_draw(context_menu, list_origin, 1);
1717 true
1718 }
1719
1720 fn layout_mouse_context_menu(&self, cx: &mut ElementContext) -> Option<AnyElement> {
1721 let mouse_context_menu = self.editor.read(cx).mouse_context_menu.as_ref()?;
1722 let mut element = overlay()
1723 .position(mouse_context_menu.position)
1724 .child(mouse_context_menu.context_menu.clone())
1725 .anchor(AnchorCorner::TopLeft)
1726 .snap_to_window()
1727 .into_any();
1728 element.layout(gpui::Point::default(), AvailableSpace::min_size(), cx);
1729 Some(element)
1730 }
1731
1732 #[allow(clippy::too_many_arguments)]
1733 fn layout_hover_popovers(
1734 &self,
1735 snapshot: &EditorSnapshot,
1736 hitbox: &Hitbox,
1737 text_hitbox: &Hitbox,
1738 visible_display_row_range: Range<u32>,
1739 content_origin: gpui::Point<Pixels>,
1740 scroll_pixel_position: gpui::Point<Pixels>,
1741 line_layouts: &[LineWithInvisibles],
1742 line_height: Pixels,
1743 em_width: Pixels,
1744 cx: &mut ElementContext,
1745 ) {
1746 struct MeasuredHoverPopover {
1747 element: AnyElement,
1748 size: Size<Pixels>,
1749 horizontal_offset: Pixels,
1750 }
1751
1752 let max_size = size(
1753 (120. * em_width) // Default size
1754 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
1755 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1756 (16. * line_height) // Default size
1757 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
1758 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1759 );
1760
1761 let hover_popovers = self.editor.update(cx, |editor, cx| {
1762 editor.hover_state.render(
1763 &snapshot,
1764 &self.style,
1765 visible_display_row_range.clone(),
1766 max_size,
1767 editor.workspace.as_ref().map(|(w, _)| w.clone()),
1768 cx,
1769 )
1770 });
1771 let Some((position, hover_popovers)) = hover_popovers else {
1772 return;
1773 };
1774
1775 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1776
1777 // This is safe because we check on layout whether the required row is available
1778 let hovered_row_layout =
1779 &line_layouts[(position.row() - visible_display_row_range.start) as usize].line;
1780
1781 // Compute Hovered Point
1782 let x =
1783 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1784 let y = position.row() as f32 * line_height - scroll_pixel_position.y;
1785 let hovered_point = content_origin + point(x, y);
1786
1787 let mut overall_height = Pixels::ZERO;
1788 let mut measured_hover_popovers = Vec::new();
1789 for mut hover_popover in hover_popovers {
1790 let size = hover_popover.measure(available_space, cx);
1791 let horizontal_offset =
1792 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
1793
1794 overall_height += HOVER_POPOVER_GAP + size.height;
1795
1796 measured_hover_popovers.push(MeasuredHoverPopover {
1797 element: hover_popover,
1798 size,
1799 horizontal_offset,
1800 });
1801 }
1802 overall_height += HOVER_POPOVER_GAP;
1803
1804 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
1805 let mut occlusion = div()
1806 .size_full()
1807 .occlude()
1808 .on_mouse_move(|_, cx| cx.stop_propagation())
1809 .into_any_element();
1810 occlusion.measure(size(width, HOVER_POPOVER_GAP).into(), cx);
1811 cx.defer_draw(occlusion, origin, 2);
1812 }
1813
1814 if hovered_point.y > overall_height {
1815 // There is enough space above. Render popovers above the hovered point
1816 let mut current_y = hovered_point.y;
1817 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
1818 let size = popover.size;
1819 let popover_origin = point(
1820 hovered_point.x + popover.horizontal_offset,
1821 current_y - size.height,
1822 );
1823
1824 cx.defer_draw(popover.element, popover_origin, 2);
1825 if position != itertools::Position::Last {
1826 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
1827 draw_occluder(size.width, origin, cx);
1828 }
1829
1830 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1831 }
1832 } else {
1833 // There is not enough space above. Render popovers below the hovered point
1834 let mut current_y = hovered_point.y + line_height;
1835 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
1836 let size = popover.size;
1837 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
1838
1839 cx.defer_draw(popover.element, popover_origin, 2);
1840 if position != itertools::Position::Last {
1841 let origin = point(popover_origin.x, popover_origin.y + size.height);
1842 draw_occluder(size.width, origin, cx);
1843 }
1844
1845 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1846 }
1847 }
1848 }
1849
1850 fn paint_background(&self, layout: &EditorLayout, cx: &mut ElementContext) {
1851 cx.paint_layer(layout.hitbox.bounds, |cx| {
1852 let scroll_top = layout.position_map.snapshot.scroll_position().y;
1853 let gutter_bg = cx.theme().colors().editor_gutter_background;
1854 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
1855 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
1856
1857 if let EditorMode::Full = layout.mode {
1858 let mut active_rows = layout.active_rows.iter().peekable();
1859 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
1860 let mut end_row = *start_row;
1861 while active_rows.peek().map_or(false, |r| {
1862 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
1863 }) {
1864 active_rows.next().unwrap();
1865 end_row += 1;
1866 }
1867
1868 if !contains_non_empty_selection {
1869 let origin = point(
1870 layout.hitbox.origin.x,
1871 layout.hitbox.origin.y
1872 + (*start_row as f32 - scroll_top)
1873 * layout.position_map.line_height,
1874 );
1875 let size = size(
1876 layout.hitbox.size.width,
1877 layout.position_map.line_height * (end_row - start_row + 1) as f32,
1878 );
1879 let active_line_bg = cx.theme().colors().editor_active_line_background;
1880 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
1881 }
1882 }
1883
1884 let mut paint_highlight =
1885 |highlight_row_start: u32, highlight_row_end: u32, color| {
1886 let origin = point(
1887 layout.hitbox.origin.x,
1888 layout.hitbox.origin.y
1889 + (highlight_row_start as f32 - scroll_top)
1890 * layout.position_map.line_height,
1891 );
1892 let size = size(
1893 layout.hitbox.size.width,
1894 layout.position_map.line_height
1895 * (highlight_row_end + 1 - highlight_row_start) as f32,
1896 );
1897 cx.paint_quad(fill(Bounds { origin, size }, color));
1898 };
1899
1900 let mut last_row = None;
1901 let mut highlight_row_start = 0u32;
1902 let mut highlight_row_end = 0u32;
1903 for (&row, &color) in &layout.highlighted_rows {
1904 let paint = last_row.map_or(false, |(last_row, last_color)| {
1905 last_color != color || last_row + 1 < row
1906 });
1907
1908 if paint {
1909 let paint_range_is_unfinished = highlight_row_end == 0;
1910 if paint_range_is_unfinished {
1911 highlight_row_end = row;
1912 last_row = None;
1913 }
1914 paint_highlight(highlight_row_start, highlight_row_end, color);
1915 highlight_row_start = 0;
1916 highlight_row_end = 0;
1917 if !paint_range_is_unfinished {
1918 highlight_row_start = row;
1919 last_row = Some((row, color));
1920 }
1921 } else {
1922 if last_row.is_none() {
1923 highlight_row_start = row;
1924 } else {
1925 highlight_row_end = row;
1926 }
1927 last_row = Some((row, color));
1928 }
1929 }
1930 if let Some((row, hsla)) = last_row {
1931 highlight_row_end = row;
1932 paint_highlight(highlight_row_start, highlight_row_end, hsla);
1933 }
1934
1935 let scroll_left =
1936 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
1937
1938 for (wrap_position, active) in layout.wrap_guides.iter() {
1939 let x = (layout.text_hitbox.origin.x
1940 + *wrap_position
1941 + layout.position_map.em_width / 2.)
1942 - scroll_left;
1943
1944 let show_scrollbars = layout
1945 .scrollbar_layout
1946 .as_ref()
1947 .map_or(false, |scrollbar| scrollbar.visible);
1948 if x < layout.text_hitbox.origin.x
1949 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
1950 {
1951 continue;
1952 }
1953
1954 let color = if *active {
1955 cx.theme().colors().editor_active_wrap_guide
1956 } else {
1957 cx.theme().colors().editor_wrap_guide
1958 };
1959 cx.paint_quad(fill(
1960 Bounds {
1961 origin: point(x, layout.text_hitbox.origin.y),
1962 size: size(px(1.), layout.text_hitbox.size.height),
1963 },
1964 color,
1965 ));
1966 }
1967 }
1968 })
1969 }
1970
1971 fn paint_gutter(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
1972 let line_height = layout.position_map.line_height;
1973
1974 let scroll_position = layout.position_map.snapshot.scroll_position();
1975 let scroll_top = scroll_position.y * line_height;
1976
1977 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
1978
1979 let show_git_gutter = matches!(
1980 ProjectSettings::get_global(cx).git.git_gutter,
1981 Some(GitGutterSetting::TrackedFiles)
1982 );
1983
1984 if show_git_gutter {
1985 Self::paint_diff_hunks(layout, cx);
1986 }
1987
1988 for (ix, line) in layout.line_numbers.iter().enumerate() {
1989 if let Some(line) = line {
1990 let line_origin = layout.gutter_hitbox.origin
1991 + point(
1992 layout.gutter_hitbox.size.width
1993 - line.width
1994 - layout.gutter_dimensions.right_padding,
1995 ix as f32 * line_height - (scroll_top % line_height),
1996 );
1997
1998 line.paint(line_origin, line_height, cx).log_err();
1999 }
2000 }
2001
2002 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2003 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2004 for fold_indicator in layout.fold_indicators.iter_mut().flatten() {
2005 fold_indicator.paint(cx);
2006 }
2007 });
2008
2009 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
2010 indicator.paint(cx);
2011 }
2012 })
2013 }
2014
2015 fn paint_diff_hunks(layout: &EditorLayout, cx: &mut ElementContext) {
2016 if layout.display_hunks.is_empty() {
2017 return;
2018 }
2019
2020 let line_height = layout.position_map.line_height;
2021
2022 let scroll_position = layout.position_map.snapshot.scroll_position();
2023 let scroll_top = scroll_position.y * line_height;
2024
2025 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2026 for hunk in &layout.display_hunks {
2027 let (display_row_range, status) = match hunk {
2028 //TODO: This rendering is entirely a horrible hack
2029 &DisplayDiffHunk::Folded { display_row: row } => {
2030 let start_y = row as f32 * line_height - scroll_top;
2031 let end_y = start_y + line_height;
2032
2033 let width = 0.275 * line_height;
2034 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2035 let highlight_size = size(width * 2., end_y - start_y);
2036 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2037 cx.paint_quad(quad(
2038 highlight_bounds,
2039 Corners::all(1. * line_height),
2040 cx.theme().status().modified,
2041 Edges::default(),
2042 transparent_black(),
2043 ));
2044
2045 continue;
2046 }
2047
2048 DisplayDiffHunk::Unfolded {
2049 display_row_range,
2050 status,
2051 } => (display_row_range, status),
2052 };
2053
2054 let color = match status {
2055 DiffHunkStatus::Added => cx.theme().status().created,
2056 DiffHunkStatus::Modified => cx.theme().status().modified,
2057
2058 //TODO: This rendering is entirely a horrible hack
2059 DiffHunkStatus::Removed => {
2060 let row = display_row_range.start;
2061
2062 let offset = line_height / 2.;
2063 let start_y = row as f32 * line_height - offset - scroll_top;
2064 let end_y = start_y + line_height;
2065
2066 let width = 0.275 * line_height;
2067 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2068 let highlight_size = size(width * 2., end_y - start_y);
2069 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2070 cx.paint_quad(quad(
2071 highlight_bounds,
2072 Corners::all(1. * line_height),
2073 cx.theme().status().deleted,
2074 Edges::default(),
2075 transparent_black(),
2076 ));
2077
2078 continue;
2079 }
2080 };
2081
2082 let start_row = display_row_range.start;
2083 let end_row = display_row_range.end;
2084 // If we're in a multibuffer, row range span might include an
2085 // excerpt header, so if we were to draw the marker straight away,
2086 // the hunk might include the rows of that header.
2087 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
2088 // Instead, we simply check whether the range we're dealing with includes
2089 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
2090 let end_row_in_current_excerpt = layout
2091 .position_map
2092 .snapshot
2093 .blocks_in_range(start_row..end_row)
2094 .find_map(|(start_row, block)| {
2095 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
2096 Some(start_row)
2097 } else {
2098 None
2099 }
2100 })
2101 .unwrap_or(end_row);
2102
2103 let start_y = start_row as f32 * line_height - scroll_top;
2104 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
2105
2106 let width = 0.275 * line_height;
2107 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2108 let highlight_size = size(width * 2., end_y - start_y);
2109 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2110 cx.paint_quad(quad(
2111 highlight_bounds,
2112 Corners::all(0.05 * line_height),
2113 color,
2114 Edges::default(),
2115 transparent_black(),
2116 ));
2117 }
2118 })
2119 }
2120
2121 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2122 cx.with_content_mask(
2123 Some(ContentMask {
2124 bounds: layout.text_hitbox.bounds,
2125 }),
2126 |cx| {
2127 let cursor_style = if self
2128 .editor
2129 .read(cx)
2130 .hovered_link_state
2131 .as_ref()
2132 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
2133 {
2134 CursorStyle::PointingHand
2135 } else {
2136 CursorStyle::IBeam
2137 };
2138 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
2139
2140 cx.with_element_id(Some("folds"), |cx| self.paint_folds(layout, cx));
2141 let invisible_display_ranges = self.paint_highlights(layout, cx);
2142 self.paint_lines(&invisible_display_ranges, layout, cx);
2143 self.paint_redactions(layout, cx);
2144 self.paint_cursors(layout, cx);
2145 },
2146 )
2147 }
2148
2149 fn paint_highlights(
2150 &mut self,
2151 layout: &mut EditorLayout,
2152 cx: &mut ElementContext,
2153 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
2154 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2155 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
2156 let line_end_overshoot = 0.15 * layout.position_map.line_height;
2157 for (range, color) in &layout.highlighted_ranges {
2158 self.paint_highlighted_range(
2159 range.clone(),
2160 *color,
2161 Pixels::ZERO,
2162 line_end_overshoot,
2163 layout,
2164 cx,
2165 );
2166 }
2167
2168 let corner_radius = 0.15 * layout.position_map.line_height;
2169
2170 for (player_color, selections) in &layout.selections {
2171 for selection in selections.into_iter() {
2172 self.paint_highlighted_range(
2173 selection.range.clone(),
2174 player_color.selection,
2175 corner_radius,
2176 corner_radius * 2.,
2177 layout,
2178 cx,
2179 );
2180
2181 if selection.is_local && !selection.range.is_empty() {
2182 invisible_display_ranges.push(selection.range.clone());
2183 }
2184 }
2185 }
2186 invisible_display_ranges
2187 })
2188 }
2189
2190 fn paint_lines(
2191 &mut self,
2192 invisible_display_ranges: &[Range<DisplayPoint>],
2193 layout: &EditorLayout,
2194 cx: &mut ElementContext,
2195 ) {
2196 let whitespace_setting = self
2197 .editor
2198 .read(cx)
2199 .buffer
2200 .read(cx)
2201 .settings_at(0, cx)
2202 .show_whitespaces;
2203
2204 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
2205 let row = layout.visible_display_row_range.start + ix as u32;
2206 line_with_invisibles.draw(
2207 layout,
2208 row,
2209 layout.content_origin,
2210 whitespace_setting,
2211 invisible_display_ranges,
2212 cx,
2213 )
2214 }
2215 }
2216
2217 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2218 if layout.redacted_ranges.is_empty() {
2219 return;
2220 }
2221
2222 let line_end_overshoot = layout.line_end_overshoot();
2223
2224 // A softer than perfect black
2225 let redaction_color = gpui::rgb(0x0e1111);
2226
2227 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2228 for range in layout.redacted_ranges.iter() {
2229 self.paint_highlighted_range(
2230 range.clone(),
2231 redaction_color.into(),
2232 Pixels::ZERO,
2233 line_end_overshoot,
2234 layout,
2235 cx,
2236 );
2237 }
2238 });
2239 }
2240
2241 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2242 for cursor in &mut layout.cursors {
2243 cursor.paint(layout.content_origin, cx);
2244 }
2245 }
2246
2247 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2248 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
2249 return;
2250 };
2251
2252 let thumb_bounds = scrollbar_layout.thumb_bounds();
2253 if scrollbar_layout.visible {
2254 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
2255 cx.paint_quad(quad(
2256 scrollbar_layout.hitbox.bounds,
2257 Corners::default(),
2258 cx.theme().colors().scrollbar_track_background,
2259 Edges {
2260 top: Pixels::ZERO,
2261 right: Pixels::ZERO,
2262 bottom: Pixels::ZERO,
2263 left: ScrollbarLayout::BORDER_WIDTH,
2264 },
2265 cx.theme().colors().scrollbar_track_border,
2266 ));
2267 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2268 let is_singleton = self.editor.read(cx).is_singleton(cx);
2269 let left = scrollbar_layout.hitbox.left();
2270 let right = scrollbar_layout.hitbox.right();
2271 let column_width =
2272 px(((right - left - ScrollbarLayout::BORDER_WIDTH).0 / 3.0).floor());
2273 if is_singleton && scrollbar_settings.selections {
2274 let start_anchor = Anchor::min();
2275 let end_anchor = Anchor::max();
2276 let background_ranges = self
2277 .editor
2278 .read(cx)
2279 .background_highlight_row_ranges::<BufferSearchHighlights>(
2280 start_anchor..end_anchor,
2281 &layout.position_map.snapshot,
2282 50000,
2283 );
2284 let left_x = left + ScrollbarLayout::BORDER_WIDTH + column_width;
2285 let right_x = left_x + column_width;
2286 for range in background_ranges {
2287 let (start_y, end_y) =
2288 scrollbar_layout.ys_for_marker(range.start().row(), range.end().row());
2289 let bounds =
2290 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2291 cx.paint_quad(quad(
2292 bounds,
2293 Corners::default(),
2294 cx.theme().status().info,
2295 Edges::default(),
2296 cx.theme().colors().scrollbar_thumb_border,
2297 ));
2298 }
2299 }
2300
2301 if is_singleton && scrollbar_settings.symbols_selections {
2302 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
2303 Anchor::min()..Anchor::max(),
2304 &layout.position_map.snapshot,
2305 cx.theme().colors(),
2306 );
2307 let left_x = left + ScrollbarLayout::BORDER_WIDTH + column_width;
2308 let right_x = left_x + column_width;
2309 for hunk in selection_ranges {
2310 let start_display = Point::new(hunk.0.start.row(), 0)
2311 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2312 let end_display = Point::new(hunk.0.end.row(), 0)
2313 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2314 let (start_y, end_y) =
2315 scrollbar_layout.ys_for_marker(start_display.row(), end_display.row());
2316 let bounds =
2317 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2318 cx.paint_quad(quad(
2319 bounds,
2320 Corners::default(),
2321 cx.theme().status().info,
2322 Edges::default(),
2323 cx.theme().colors().scrollbar_thumb_border,
2324 ));
2325 }
2326 }
2327
2328 if is_singleton && scrollbar_settings.git_diff {
2329 let left_x = left + ScrollbarLayout::BORDER_WIDTH;
2330 let right_x = left_x + column_width;
2331 for hunk in layout
2332 .position_map
2333 .snapshot
2334 .buffer_snapshot
2335 .git_diff_hunks_in_range(0..layout.max_row)
2336 {
2337 let start_display_row = Point::new(hunk.associated_range.start, 0)
2338 .to_display_point(&layout.position_map.snapshot.display_snapshot)
2339 .row();
2340 let mut end_display_row = Point::new(hunk.associated_range.end, 0)
2341 .to_display_point(&layout.position_map.snapshot.display_snapshot)
2342 .row();
2343 if end_display_row != start_display_row {
2344 end_display_row -= 1;
2345 }
2346 let (start_y, end_y) =
2347 scrollbar_layout.ys_for_marker(start_display_row, end_display_row);
2348 let bounds =
2349 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2350 let color = match hunk.status() {
2351 DiffHunkStatus::Added => cx.theme().status().created,
2352 DiffHunkStatus::Modified => cx.theme().status().modified,
2353 DiffHunkStatus::Removed => cx.theme().status().deleted,
2354 };
2355 cx.paint_quad(quad(
2356 bounds,
2357 Corners::default(),
2358 color,
2359 Edges::default(),
2360 cx.theme().colors().scrollbar_thumb_border,
2361 ));
2362 }
2363 }
2364
2365 if is_singleton && scrollbar_settings.diagnostics {
2366 let max_point = layout
2367 .position_map
2368 .snapshot
2369 .display_snapshot
2370 .buffer_snapshot
2371 .max_point();
2372
2373 let diagnostics = layout
2374 .position_map
2375 .snapshot
2376 .buffer_snapshot
2377 .diagnostics_in_range::<_, Point>(Point::zero()..max_point, false)
2378 // We want to sort by severity, in order to paint the most severe diagnostics last.
2379 .sorted_by_key(|diagnostic| {
2380 std::cmp::Reverse(diagnostic.diagnostic.severity)
2381 });
2382
2383 let left_x = left + ScrollbarLayout::BORDER_WIDTH + 2.0 * column_width;
2384 for diagnostic in diagnostics {
2385 let start_display = diagnostic
2386 .range
2387 .start
2388 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2389 let end_display = diagnostic
2390 .range
2391 .end
2392 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2393 let (start_y, end_y) =
2394 scrollbar_layout.ys_for_marker(start_display.row(), end_display.row());
2395 let bounds =
2396 Bounds::from_corners(point(left_x, start_y), point(right, end_y));
2397 let color = match diagnostic.diagnostic.severity {
2398 DiagnosticSeverity::ERROR => cx.theme().status().error,
2399 DiagnosticSeverity::WARNING => cx.theme().status().warning,
2400 DiagnosticSeverity::INFORMATION => cx.theme().status().info,
2401 _ => cx.theme().status().hint,
2402 };
2403 cx.paint_quad(quad(
2404 bounds,
2405 Corners::default(),
2406 color,
2407 Edges::default(),
2408 cx.theme().colors().scrollbar_thumb_border,
2409 ));
2410 }
2411 }
2412
2413 cx.paint_quad(quad(
2414 thumb_bounds,
2415 Corners::default(),
2416 cx.theme().colors().scrollbar_thumb_background,
2417 Edges {
2418 top: Pixels::ZERO,
2419 right: Pixels::ZERO,
2420 bottom: Pixels::ZERO,
2421 left: ScrollbarLayout::BORDER_WIDTH,
2422 },
2423 cx.theme().colors().scrollbar_thumb_border,
2424 ));
2425 });
2426 }
2427
2428 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
2429
2430 let scroll_height = scrollbar_layout.scroll_height;
2431 let height = scrollbar_layout.height;
2432 let row_range = scrollbar_layout.visible_row_range.clone();
2433
2434 cx.on_mouse_event({
2435 let editor = self.editor.clone();
2436 let hitbox = scrollbar_layout.hitbox.clone();
2437 let mut mouse_position = cx.mouse_position();
2438 move |event: &MouseMoveEvent, phase, cx| {
2439 if phase == DispatchPhase::Capture {
2440 return;
2441 }
2442
2443 editor.update(cx, |editor, cx| {
2444 if event.pressed_button == Some(MouseButton::Left)
2445 && editor.scroll_manager.is_dragging_scrollbar()
2446 {
2447 let y = mouse_position.y;
2448 let new_y = event.position.y;
2449 if (hitbox.top()..hitbox.bottom()).contains(&y) {
2450 let mut position = editor.scroll_position(cx);
2451 position.y += (new_y - y) * scroll_height / height;
2452 if position.y < 0.0 {
2453 position.y = 0.0;
2454 }
2455 editor.set_scroll_position(position, cx);
2456 }
2457
2458 mouse_position = event.position;
2459 cx.stop_propagation();
2460 } else {
2461 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2462 if hitbox.is_hovered(cx) {
2463 editor.scroll_manager.show_scrollbar(cx);
2464 }
2465 }
2466 })
2467 }
2468 });
2469
2470 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
2471 cx.on_mouse_event({
2472 let editor = self.editor.clone();
2473 move |_: &MouseUpEvent, phase, cx| {
2474 if phase == DispatchPhase::Capture {
2475 return;
2476 }
2477
2478 editor.update(cx, |editor, cx| {
2479 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2480 cx.stop_propagation();
2481 });
2482 }
2483 });
2484 } else {
2485 cx.on_mouse_event({
2486 let editor = self.editor.clone();
2487 let hitbox = scrollbar_layout.hitbox.clone();
2488 move |event: &MouseDownEvent, phase, cx| {
2489 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
2490 return;
2491 }
2492
2493 editor.update(cx, |editor, cx| {
2494 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
2495
2496 let y = event.position.y;
2497 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
2498 let center_row =
2499 ((y - hitbox.top()) * scroll_height / height).round() as u32;
2500 let top_row = center_row
2501 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
2502 let mut position = editor.scroll_position(cx);
2503 position.y = top_row as f32;
2504 editor.set_scroll_position(position, cx);
2505 } else {
2506 editor.scroll_manager.show_scrollbar(cx);
2507 }
2508
2509 cx.stop_propagation();
2510 });
2511 }
2512 });
2513 }
2514 }
2515
2516 #[allow(clippy::too_many_arguments)]
2517 fn paint_highlighted_range(
2518 &self,
2519 range: Range<DisplayPoint>,
2520 color: Hsla,
2521 corner_radius: Pixels,
2522 line_end_overshoot: Pixels,
2523 layout: &EditorLayout,
2524 cx: &mut ElementContext,
2525 ) {
2526 let start_row = layout.visible_display_row_range.start;
2527 let end_row = layout.visible_display_row_range.end;
2528 if range.start != range.end {
2529 let row_range = if range.end.column() == 0 {
2530 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
2531 } else {
2532 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
2533 };
2534
2535 let highlighted_range = HighlightedRange {
2536 color,
2537 line_height: layout.position_map.line_height,
2538 corner_radius,
2539 start_y: layout.content_origin.y
2540 + row_range.start as f32 * layout.position_map.line_height
2541 - layout.position_map.scroll_pixel_position.y,
2542 lines: row_range
2543 .into_iter()
2544 .map(|row| {
2545 let line_layout =
2546 &layout.position_map.line_layouts[(row - start_row) as usize].line;
2547 HighlightedRangeLine {
2548 start_x: if row == range.start.row() {
2549 layout.content_origin.x
2550 + line_layout.x_for_index(range.start.column() as usize)
2551 - layout.position_map.scroll_pixel_position.x
2552 } else {
2553 layout.content_origin.x
2554 - layout.position_map.scroll_pixel_position.x
2555 },
2556 end_x: if row == range.end.row() {
2557 layout.content_origin.x
2558 + line_layout.x_for_index(range.end.column() as usize)
2559 - layout.position_map.scroll_pixel_position.x
2560 } else {
2561 layout.content_origin.x + line_layout.width + line_end_overshoot
2562 - layout.position_map.scroll_pixel_position.x
2563 },
2564 }
2565 })
2566 .collect(),
2567 };
2568
2569 highlighted_range.paint(layout.text_hitbox.bounds, cx);
2570 }
2571 }
2572
2573 fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2574 if layout.folds.is_empty() {
2575 return;
2576 }
2577
2578 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2579 let fold_corner_radius = 0.15 * layout.position_map.line_height;
2580 for mut fold in mem::take(&mut layout.folds) {
2581 fold.hover_element.paint(cx);
2582
2583 let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
2584 let fold_background = if hover_element.interactivity().active.unwrap() {
2585 cx.theme().colors().ghost_element_active
2586 } else if hover_element.interactivity().hovered.unwrap() {
2587 cx.theme().colors().ghost_element_hover
2588 } else {
2589 cx.theme().colors().ghost_element_background
2590 };
2591
2592 self.paint_highlighted_range(
2593 fold.display_range.clone(),
2594 fold_background,
2595 fold_corner_radius,
2596 fold_corner_radius * 2.,
2597 layout,
2598 cx,
2599 );
2600 }
2601 })
2602 }
2603
2604 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2605 for mut block in layout.blocks.drain(..) {
2606 block.element.paint(cx);
2607 }
2608 }
2609
2610 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2611 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
2612 mouse_context_menu.paint(cx);
2613 }
2614 }
2615
2616 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2617 cx.on_mouse_event({
2618 let position_map = layout.position_map.clone();
2619 let editor = self.editor.clone();
2620 let hitbox = layout.hitbox.clone();
2621 let mut delta = ScrollDelta::default();
2622
2623 move |event: &ScrollWheelEvent, phase, cx| {
2624 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
2625 delta = delta.coalesce(event.delta);
2626 editor.update(cx, |editor, cx| {
2627 let position_map: &PositionMap = &position_map;
2628
2629 let line_height = position_map.line_height;
2630 let max_glyph_width = position_map.em_width;
2631 let (delta, axis) = match delta {
2632 gpui::ScrollDelta::Pixels(mut pixels) => {
2633 //Trackpad
2634 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2635 (pixels, axis)
2636 }
2637
2638 gpui::ScrollDelta::Lines(lines) => {
2639 //Not trackpad
2640 let pixels =
2641 point(lines.x * max_glyph_width, lines.y * line_height);
2642 (pixels, None)
2643 }
2644 };
2645
2646 let scroll_position = position_map.snapshot.scroll_position();
2647 let x = (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width;
2648 let y = (scroll_position.y * line_height - delta.y) / line_height;
2649 let scroll_position =
2650 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2651 editor.scroll(scroll_position, axis, cx);
2652 cx.stop_propagation();
2653 });
2654 }
2655 }
2656 });
2657 }
2658
2659 fn paint_mouse_listeners(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2660 self.paint_scroll_wheel_listener(layout, cx);
2661
2662 cx.on_mouse_event({
2663 let position_map = layout.position_map.clone();
2664 let editor = self.editor.clone();
2665 let text_hitbox = layout.text_hitbox.clone();
2666 let gutter_hitbox = layout.gutter_hitbox.clone();
2667
2668 move |event: &MouseDownEvent, phase, cx| {
2669 if phase == DispatchPhase::Bubble {
2670 match event.button {
2671 MouseButton::Left => editor.update(cx, |editor, cx| {
2672 Self::mouse_left_down(
2673 editor,
2674 event,
2675 &position_map,
2676 &text_hitbox,
2677 &gutter_hitbox,
2678 cx,
2679 );
2680 }),
2681 MouseButton::Right => editor.update(cx, |editor, cx| {
2682 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
2683 }),
2684 _ => {}
2685 };
2686 }
2687 }
2688 });
2689
2690 cx.on_mouse_event({
2691 let editor = self.editor.clone();
2692 let position_map = layout.position_map.clone();
2693 let text_hitbox = layout.text_hitbox.clone();
2694
2695 move |event: &MouseUpEvent, phase, cx| {
2696 if phase == DispatchPhase::Bubble {
2697 editor.update(cx, |editor, cx| {
2698 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
2699 });
2700 }
2701 }
2702 });
2703 cx.on_mouse_event({
2704 let position_map = layout.position_map.clone();
2705 let editor = self.editor.clone();
2706 let text_hitbox = layout.text_hitbox.clone();
2707 let gutter_hitbox = layout.gutter_hitbox.clone();
2708
2709 move |event: &MouseMoveEvent, phase, cx| {
2710 if phase == DispatchPhase::Bubble {
2711 editor.update(cx, |editor, cx| {
2712 if event.pressed_button == Some(MouseButton::Left) {
2713 Self::mouse_dragged(
2714 editor,
2715 event,
2716 &position_map,
2717 text_hitbox.bounds,
2718 cx,
2719 )
2720 }
2721
2722 Self::mouse_moved(
2723 editor,
2724 event,
2725 &position_map,
2726 &text_hitbox,
2727 &gutter_hitbox,
2728 cx,
2729 )
2730 });
2731 }
2732 }
2733 });
2734 }
2735
2736 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
2737 bounds.upper_right().x - self.style.scrollbar_width
2738 }
2739
2740 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
2741 let style = &self.style;
2742 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2743 let layout = cx
2744 .text_system()
2745 .shape_line(
2746 SharedString::from(" ".repeat(column)),
2747 font_size,
2748 &[TextRun {
2749 len: column,
2750 font: style.text.font(),
2751 color: Hsla::default(),
2752 background_color: None,
2753 underline: None,
2754 strikethrough: None,
2755 }],
2756 )
2757 .unwrap();
2758
2759 layout.width
2760 }
2761
2762 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
2763 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
2764 self.column_pixels(digit_count, cx)
2765 }
2766}
2767
2768#[derive(Debug)]
2769pub(crate) struct LineWithInvisibles {
2770 pub line: ShapedLine,
2771 invisibles: Vec<Invisible>,
2772}
2773
2774impl LineWithInvisibles {
2775 fn from_chunks<'a>(
2776 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2777 text_style: &TextStyle,
2778 max_line_len: usize,
2779 max_line_count: usize,
2780 line_number_layouts: &[Option<ShapedLine>],
2781 editor_mode: EditorMode,
2782 cx: &WindowContext,
2783 ) -> Vec<Self> {
2784 let mut layouts = Vec::with_capacity(max_line_count);
2785 let mut line = String::new();
2786 let mut invisibles = Vec::new();
2787 let mut styles = Vec::new();
2788 let mut non_whitespace_added = false;
2789 let mut row = 0;
2790 let mut line_exceeded_max_len = false;
2791 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2792
2793 for highlighted_chunk in chunks.chain([HighlightedChunk {
2794 chunk: "\n",
2795 style: None,
2796 is_tab: false,
2797 }]) {
2798 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2799 if ix > 0 {
2800 let shaped_line = cx
2801 .text_system()
2802 .shape_line(line.clone().into(), font_size, &styles)
2803 .unwrap();
2804 layouts.push(Self {
2805 line: shaped_line,
2806 invisibles: std::mem::take(&mut invisibles),
2807 });
2808
2809 line.clear();
2810 styles.clear();
2811 row += 1;
2812 line_exceeded_max_len = false;
2813 non_whitespace_added = false;
2814 if row == max_line_count {
2815 return layouts;
2816 }
2817 }
2818
2819 if !line_chunk.is_empty() && !line_exceeded_max_len {
2820 let text_style = if let Some(style) = highlighted_chunk.style {
2821 Cow::Owned(text_style.clone().highlight(style))
2822 } else {
2823 Cow::Borrowed(text_style)
2824 };
2825
2826 if line.len() + line_chunk.len() > max_line_len {
2827 let mut chunk_len = max_line_len - line.len();
2828 while !line_chunk.is_char_boundary(chunk_len) {
2829 chunk_len -= 1;
2830 }
2831 line_chunk = &line_chunk[..chunk_len];
2832 line_exceeded_max_len = true;
2833 }
2834
2835 styles.push(TextRun {
2836 len: line_chunk.len(),
2837 font: text_style.font(),
2838 color: text_style.color,
2839 background_color: text_style.background_color,
2840 underline: text_style.underline,
2841 strikethrough: text_style.strikethrough,
2842 });
2843
2844 if editor_mode == EditorMode::Full {
2845 // Line wrap pads its contents with fake whitespaces,
2846 // avoid printing them
2847 let inside_wrapped_string = line_number_layouts
2848 .get(row)
2849 .and_then(|layout| layout.as_ref())
2850 .is_none();
2851 if highlighted_chunk.is_tab {
2852 if non_whitespace_added || !inside_wrapped_string {
2853 invisibles.push(Invisible::Tab {
2854 line_start_offset: line.len(),
2855 });
2856 }
2857 } else {
2858 invisibles.extend(
2859 line_chunk
2860 .chars()
2861 .enumerate()
2862 .filter(|(_, line_char)| {
2863 let is_whitespace = line_char.is_whitespace();
2864 non_whitespace_added |= !is_whitespace;
2865 is_whitespace
2866 && (non_whitespace_added || !inside_wrapped_string)
2867 })
2868 .map(|(whitespace_index, _)| Invisible::Whitespace {
2869 line_offset: line.len() + whitespace_index,
2870 }),
2871 )
2872 }
2873 }
2874
2875 line.push_str(line_chunk);
2876 }
2877 }
2878 }
2879
2880 layouts
2881 }
2882
2883 fn draw(
2884 &self,
2885 layout: &EditorLayout,
2886 row: u32,
2887 content_origin: gpui::Point<Pixels>,
2888 whitespace_setting: ShowWhitespaceSetting,
2889 selection_ranges: &[Range<DisplayPoint>],
2890 cx: &mut ElementContext,
2891 ) {
2892 let line_height = layout.position_map.line_height;
2893 let line_y =
2894 line_height * (row as f32 - layout.position_map.scroll_pixel_position.y / line_height);
2895
2896 self.line
2897 .paint(
2898 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y),
2899 line_height,
2900 cx,
2901 )
2902 .log_err();
2903
2904 self.draw_invisibles(
2905 &selection_ranges,
2906 layout,
2907 content_origin,
2908 line_y,
2909 row,
2910 line_height,
2911 whitespace_setting,
2912 cx,
2913 );
2914 }
2915
2916 #[allow(clippy::too_many_arguments)]
2917 fn draw_invisibles(
2918 &self,
2919 selection_ranges: &[Range<DisplayPoint>],
2920 layout: &EditorLayout,
2921 content_origin: gpui::Point<Pixels>,
2922 line_y: Pixels,
2923 row: u32,
2924 line_height: Pixels,
2925 whitespace_setting: ShowWhitespaceSetting,
2926 cx: &mut ElementContext,
2927 ) {
2928 let allowed_invisibles_regions = match whitespace_setting {
2929 ShowWhitespaceSetting::None => return,
2930 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2931 ShowWhitespaceSetting::All => None,
2932 };
2933
2934 for invisible in &self.invisibles {
2935 let (&token_offset, invisible_symbol) = match invisible {
2936 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2937 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2938 };
2939
2940 let x_offset = self.line.x_for_index(token_offset);
2941 let invisible_offset =
2942 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2943 let origin = content_origin
2944 + gpui::point(
2945 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
2946 line_y,
2947 );
2948
2949 if let Some(allowed_regions) = allowed_invisibles_regions {
2950 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2951 if !allowed_regions
2952 .iter()
2953 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2954 {
2955 continue;
2956 }
2957 }
2958 invisible_symbol.paint(origin, line_height, cx).log_err();
2959 }
2960 }
2961}
2962
2963#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2964enum Invisible {
2965 Tab { line_start_offset: usize },
2966 Whitespace { line_offset: usize },
2967}
2968
2969impl Element for EditorElement {
2970 type BeforeLayout = ();
2971 type AfterLayout = EditorLayout;
2972
2973 fn before_layout(&mut self, cx: &mut ElementContext) -> (gpui::LayoutId, ()) {
2974 self.editor.update(cx, |editor, cx| {
2975 editor.set_style(self.style.clone(), cx);
2976
2977 let layout_id = match editor.mode {
2978 EditorMode::SingleLine => {
2979 let rem_size = cx.rem_size();
2980 let mut style = Style::default();
2981 style.size.width = relative(1.).into();
2982 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2983 cx.with_element_context(|cx| cx.request_layout(&style, None))
2984 }
2985 EditorMode::AutoHeight { max_lines } => {
2986 let editor_handle = cx.view().clone();
2987 let max_line_number_width =
2988 self.max_line_number_width(&editor.snapshot(cx), cx);
2989 cx.with_element_context(|cx| {
2990 cx.request_measured_layout(
2991 Style::default(),
2992 move |known_dimensions, _, cx| {
2993 editor_handle
2994 .update(cx, |editor, cx| {
2995 compute_auto_height_layout(
2996 editor,
2997 max_lines,
2998 max_line_number_width,
2999 known_dimensions,
3000 cx,
3001 )
3002 })
3003 .unwrap_or_default()
3004 },
3005 )
3006 })
3007 }
3008 EditorMode::Full => {
3009 let mut style = Style::default();
3010 style.size.width = relative(1.).into();
3011 style.size.height = relative(1.).into();
3012 cx.with_element_context(|cx| cx.request_layout(&style, None))
3013 }
3014 };
3015
3016 (layout_id, ())
3017 })
3018 }
3019
3020 fn after_layout(
3021 &mut self,
3022 bounds: Bounds<Pixels>,
3023 _: &mut Self::BeforeLayout,
3024 cx: &mut ElementContext,
3025 ) -> Self::AfterLayout {
3026 let text_style = TextStyleRefinement {
3027 font_size: Some(self.style.text.font_size),
3028 line_height: Some(self.style.text.line_height),
3029 ..Default::default()
3030 };
3031 cx.with_text_style(Some(text_style), |cx| {
3032 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3033 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
3034 let style = self.style.clone();
3035
3036 let font_id = cx.text_system().resolve_font(&style.text.font());
3037 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3038 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3039 let em_width = cx
3040 .text_system()
3041 .typographic_bounds(font_id, font_size, 'm')
3042 .unwrap()
3043 .size
3044 .width;
3045 let em_advance = cx
3046 .text_system()
3047 .advance(font_id, font_size, 'm')
3048 .unwrap()
3049 .width;
3050
3051 let gutter_dimensions = snapshot.gutter_dimensions(
3052 font_id,
3053 font_size,
3054 em_width,
3055 self.max_line_number_width(&snapshot, cx),
3056 cx,
3057 );
3058 let text_width = bounds.size.width - gutter_dimensions.width;
3059 let overscroll = size(em_width, px(0.));
3060
3061 snapshot = self.editor.update(cx, |editor, cx| {
3062 editor.gutter_width = gutter_dimensions.width;
3063 editor.set_visible_line_count(bounds.size.height / line_height, cx);
3064
3065 let editor_width =
3066 text_width - gutter_dimensions.margin - overscroll.width - em_width;
3067 let wrap_width = match editor.soft_wrap_mode(cx) {
3068 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
3069 SoftWrap::EditorWidth => editor_width,
3070 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
3071 };
3072
3073 if editor.set_wrap_width(Some(wrap_width), cx) {
3074 editor.snapshot(cx)
3075 } else {
3076 snapshot
3077 }
3078 });
3079
3080 let wrap_guides = self
3081 .editor
3082 .read(cx)
3083 .wrap_guides(cx)
3084 .iter()
3085 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
3086 .collect::<SmallVec<[_; 2]>>();
3087
3088 let hitbox = cx.insert_hitbox(bounds, false);
3089 let gutter_hitbox = cx.insert_hitbox(
3090 Bounds {
3091 origin: bounds.origin,
3092 size: size(gutter_dimensions.width, bounds.size.height),
3093 },
3094 false,
3095 );
3096 let text_hitbox = cx.insert_hitbox(
3097 Bounds {
3098 origin: gutter_hitbox.upper_right(),
3099 size: size(text_width, bounds.size.height),
3100 },
3101 false,
3102 );
3103 // Offset the content_bounds from the text_bounds by the gutter margin (which
3104 // is roughly half a character wide) to make hit testing work more like how we want.
3105 let content_origin =
3106 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
3107
3108 let autoscroll_horizontally = self.editor.update(cx, |editor, cx| {
3109 let autoscroll_horizontally =
3110 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
3111 snapshot = editor.snapshot(cx);
3112 autoscroll_horizontally
3113 });
3114
3115 let mut scroll_position = snapshot.scroll_position();
3116 // The scroll position is a fractional point, the whole number of which represents
3117 // the top of the window in terms of display rows.
3118 let start_row = scroll_position.y as u32;
3119 let height_in_lines = bounds.size.height / line_height;
3120 let max_row = snapshot.max_point().row();
3121
3122 // Add 1 to ensure selections bleed off screen
3123 let end_row =
3124 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
3125
3126 let start_anchor = if start_row == 0 {
3127 Anchor::min()
3128 } else {
3129 snapshot.buffer_snapshot.anchor_before(
3130 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
3131 )
3132 };
3133 let end_anchor = if end_row > max_row {
3134 Anchor::max()
3135 } else {
3136 snapshot.buffer_snapshot.anchor_before(
3137 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
3138 )
3139 };
3140
3141 let highlighted_rows = self
3142 .editor
3143 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
3144 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
3145 start_anchor..end_anchor,
3146 &snapshot.display_snapshot,
3147 cx.theme().colors(),
3148 );
3149
3150 let redacted_ranges = self.editor.read(cx).redacted_ranges(
3151 start_anchor..end_anchor,
3152 &snapshot.display_snapshot,
3153 cx,
3154 );
3155
3156 let (selections, active_rows, newest_selection_head) = self.layout_selections(
3157 start_anchor,
3158 end_anchor,
3159 &snapshot,
3160 start_row,
3161 end_row,
3162 cx,
3163 );
3164
3165 let (line_numbers, fold_statuses) = self.layout_line_numbers(
3166 start_row..end_row,
3167 &active_rows,
3168 newest_selection_head,
3169 &snapshot,
3170 cx,
3171 );
3172
3173 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
3174
3175 let mut max_visible_line_width = Pixels::ZERO;
3176 let line_layouts =
3177 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
3178 for line_with_invisibles in &line_layouts {
3179 if line_with_invisibles.line.width > max_visible_line_width {
3180 max_visible_line_width = line_with_invisibles.line.width;
3181 }
3182 }
3183
3184 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
3185 .unwrap()
3186 .width;
3187 let mut scroll_width =
3188 longest_line_width.max(max_visible_line_width) + overscroll.width;
3189 let mut blocks = self.build_blocks(
3190 start_row..end_row,
3191 &snapshot,
3192 &hitbox,
3193 &text_hitbox,
3194 &mut scroll_width,
3195 &gutter_dimensions,
3196 em_width,
3197 gutter_dimensions.width + gutter_dimensions.margin,
3198 line_height,
3199 &line_layouts,
3200 cx,
3201 );
3202
3203 let scroll_max = point(
3204 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
3205 max_row as f32,
3206 );
3207
3208 self.editor.update(cx, |editor, cx| {
3209 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3210
3211 let autoscrolled = if autoscroll_horizontally {
3212 editor.autoscroll_horizontally(
3213 start_row,
3214 text_hitbox.size.width,
3215 scroll_width,
3216 em_width,
3217 &line_layouts,
3218 cx,
3219 )
3220 } else {
3221 false
3222 };
3223
3224 if clamped || autoscrolled {
3225 snapshot = editor.snapshot(cx);
3226 scroll_position = snapshot.scroll_position();
3227 }
3228 });
3229
3230 let scroll_pixel_position = point(
3231 scroll_position.x * em_width,
3232 scroll_position.y * line_height,
3233 );
3234
3235 cx.with_element_id(Some("blocks"), |cx| {
3236 self.layout_blocks(
3237 &mut blocks,
3238 &hitbox,
3239 line_height,
3240 scroll_pixel_position,
3241 cx,
3242 );
3243 });
3244
3245 let cursors = self.layout_cursors(
3246 &snapshot,
3247 &selections,
3248 start_row..end_row,
3249 &line_layouts,
3250 &text_hitbox,
3251 content_origin,
3252 scroll_pixel_position,
3253 line_height,
3254 em_width,
3255 cx,
3256 );
3257
3258 let scrollbar_layout = self.layout_scrollbar(
3259 &snapshot,
3260 bounds,
3261 scroll_position,
3262 line_height,
3263 height_in_lines,
3264 cx,
3265 );
3266
3267 let folds = cx.with_element_id(Some("folds"), |cx| {
3268 self.layout_folds(
3269 &snapshot,
3270 content_origin,
3271 start_anchor..end_anchor,
3272 start_row..end_row,
3273 scroll_pixel_position,
3274 line_height,
3275 &line_layouts,
3276 cx,
3277 )
3278 });
3279
3280 let gutter_settings = EditorSettings::get_global(cx).gutter;
3281
3282 let mut context_menu_visible = false;
3283 let mut code_actions_indicator = None;
3284 if let Some(newest_selection_head) = newest_selection_head {
3285 if (start_row..end_row).contains(&newest_selection_head.row()) {
3286 context_menu_visible = self.layout_context_menu(
3287 line_height,
3288 &hitbox,
3289 &text_hitbox,
3290 content_origin,
3291 start_row,
3292 scroll_pixel_position,
3293 &line_layouts,
3294 newest_selection_head,
3295 cx,
3296 );
3297 if gutter_settings.code_actions {
3298 code_actions_indicator = self.layout_code_actions_indicator(
3299 line_height,
3300 newest_selection_head,
3301 scroll_pixel_position,
3302 &gutter_dimensions,
3303 &gutter_hitbox,
3304 cx,
3305 );
3306 }
3307 }
3308 }
3309
3310 if !context_menu_visible && !cx.has_active_drag() {
3311 self.layout_hover_popovers(
3312 &snapshot,
3313 &hitbox,
3314 &text_hitbox,
3315 start_row..end_row,
3316 content_origin,
3317 scroll_pixel_position,
3318 &line_layouts,
3319 line_height,
3320 em_width,
3321 cx,
3322 );
3323 }
3324
3325 let mouse_context_menu = self.layout_mouse_context_menu(cx);
3326
3327 let fold_indicators = if gutter_settings.folds {
3328 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
3329 self.layout_gutter_fold_indicators(
3330 fold_statuses,
3331 line_height,
3332 &gutter_dimensions,
3333 gutter_settings,
3334 scroll_pixel_position,
3335 &gutter_hitbox,
3336 cx,
3337 )
3338 })
3339 } else {
3340 Vec::new()
3341 };
3342
3343 let invisible_symbol_font_size = font_size / 2.;
3344 let tab_invisible = cx
3345 .text_system()
3346 .shape_line(
3347 "→".into(),
3348 invisible_symbol_font_size,
3349 &[TextRun {
3350 len: "→".len(),
3351 font: self.style.text.font(),
3352 color: cx.theme().colors().editor_invisible,
3353 background_color: None,
3354 underline: None,
3355 strikethrough: None,
3356 }],
3357 )
3358 .unwrap();
3359 let space_invisible = cx
3360 .text_system()
3361 .shape_line(
3362 "•".into(),
3363 invisible_symbol_font_size,
3364 &[TextRun {
3365 len: "•".len(),
3366 font: self.style.text.font(),
3367 color: cx.theme().colors().editor_invisible,
3368 background_color: None,
3369 underline: None,
3370 strikethrough: None,
3371 }],
3372 )
3373 .unwrap();
3374
3375 EditorLayout {
3376 mode: snapshot.mode,
3377 position_map: Arc::new(PositionMap {
3378 size: bounds.size,
3379 scroll_pixel_position,
3380 scroll_max,
3381 line_layouts,
3382 line_height,
3383 em_width,
3384 em_advance,
3385 snapshot,
3386 }),
3387 visible_display_row_range: start_row..end_row,
3388 wrap_guides,
3389 hitbox,
3390 text_hitbox,
3391 gutter_hitbox,
3392 gutter_dimensions,
3393 content_origin,
3394 scrollbar_layout,
3395 max_row,
3396 active_rows,
3397 highlighted_rows,
3398 highlighted_ranges,
3399 redacted_ranges,
3400 line_numbers,
3401 display_hunks,
3402 folds,
3403 blocks,
3404 cursors,
3405 selections,
3406 mouse_context_menu,
3407 code_actions_indicator,
3408 fold_indicators,
3409 tab_invisible,
3410 space_invisible,
3411 }
3412 })
3413 })
3414 }
3415
3416 fn paint(
3417 &mut self,
3418 bounds: Bounds<gpui::Pixels>,
3419 _: &mut Self::BeforeLayout,
3420 layout: &mut Self::AfterLayout,
3421 cx: &mut ElementContext,
3422 ) {
3423 let focus_handle = self.editor.focus_handle(cx);
3424 let key_context = self.editor.read(cx).key_context(cx);
3425 cx.set_focus_handle(&focus_handle);
3426 cx.set_key_context(key_context);
3427 cx.set_view_id(self.editor.entity_id());
3428 cx.handle_input(
3429 &focus_handle,
3430 ElementInputHandler::new(bounds, self.editor.clone()),
3431 );
3432 self.register_actions(cx);
3433 self.register_key_listeners(cx, layout);
3434
3435 let text_style = TextStyleRefinement {
3436 font_size: Some(self.style.text.font_size),
3437 line_height: Some(self.style.text.line_height),
3438 ..Default::default()
3439 };
3440 cx.with_text_style(Some(text_style), |cx| {
3441 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3442 self.paint_mouse_listeners(layout, cx);
3443
3444 self.paint_background(layout, cx);
3445 if layout.gutter_hitbox.size.width > Pixels::ZERO {
3446 self.paint_gutter(layout, cx);
3447 }
3448 self.paint_text(layout, cx);
3449
3450 if !layout.blocks.is_empty() {
3451 cx.with_element_id(Some("blocks"), |cx| {
3452 self.paint_blocks(layout, cx);
3453 });
3454 }
3455
3456 self.paint_scrollbar(layout, cx);
3457 self.paint_mouse_context_menu(layout, cx);
3458 });
3459 })
3460 }
3461}
3462
3463impl IntoElement for EditorElement {
3464 type Element = Self;
3465
3466 fn into_element(self) -> Self::Element {
3467 self
3468 }
3469}
3470
3471type BufferRow = u32;
3472
3473pub struct EditorLayout {
3474 position_map: Arc<PositionMap>,
3475 hitbox: Hitbox,
3476 text_hitbox: Hitbox,
3477 gutter_hitbox: Hitbox,
3478 gutter_dimensions: GutterDimensions,
3479 content_origin: gpui::Point<Pixels>,
3480 scrollbar_layout: Option<ScrollbarLayout>,
3481 mode: EditorMode,
3482 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3483 visible_display_row_range: Range<u32>,
3484 active_rows: BTreeMap<u32, bool>,
3485 highlighted_rows: BTreeMap<u32, Hsla>,
3486 line_numbers: Vec<Option<ShapedLine>>,
3487 display_hunks: Vec<DisplayDiffHunk>,
3488 folds: Vec<FoldLayout>,
3489 blocks: Vec<BlockLayout>,
3490 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3491 redacted_ranges: Vec<Range<DisplayPoint>>,
3492 cursors: Vec<CursorLayout>,
3493 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3494 max_row: u32,
3495 code_actions_indicator: Option<AnyElement>,
3496 fold_indicators: Vec<Option<AnyElement>>,
3497 mouse_context_menu: Option<AnyElement>,
3498 tab_invisible: ShapedLine,
3499 space_invisible: ShapedLine,
3500}
3501
3502impl EditorLayout {
3503 fn line_end_overshoot(&self) -> Pixels {
3504 0.15 * self.position_map.line_height
3505 }
3506}
3507
3508struct ScrollbarLayout {
3509 hitbox: Hitbox,
3510 visible_row_range: Range<f32>,
3511 visible: bool,
3512 height: Pixels,
3513 scroll_height: f32,
3514 first_row_y_offset: Pixels,
3515 row_height: Pixels,
3516}
3517
3518impl ScrollbarLayout {
3519 const BORDER_WIDTH: Pixels = px(1.0);
3520 const MIN_MARKER_HEIGHT: Pixels = px(2.0);
3521
3522 fn thumb_bounds(&self) -> Bounds<Pixels> {
3523 let thumb_top = self.y_for_row(self.visible_row_range.start) - self.first_row_y_offset;
3524 let thumb_bottom = self.y_for_row(self.visible_row_range.end) + self.first_row_y_offset;
3525 Bounds::from_corners(
3526 point(self.hitbox.left(), thumb_top),
3527 point(self.hitbox.right(), thumb_bottom),
3528 )
3529 }
3530
3531 fn y_for_row(&self, row: f32) -> Pixels {
3532 self.hitbox.top() + self.first_row_y_offset + row * self.row_height
3533 }
3534
3535 fn ys_for_marker(&self, start_row: u32, end_row: u32) -> (Pixels, Pixels) {
3536 let start_y = self.y_for_row(start_row as f32);
3537 let mut end_y = self.y_for_row((end_row + 1) as f32);
3538 if end_y - start_y < Self::MIN_MARKER_HEIGHT {
3539 end_y = start_y + Self::MIN_MARKER_HEIGHT;
3540 }
3541 (start_y, end_y)
3542 }
3543}
3544
3545struct FoldLayout {
3546 display_range: Range<DisplayPoint>,
3547 hover_element: AnyElement,
3548}
3549
3550struct PositionMap {
3551 size: Size<Pixels>,
3552 line_height: Pixels,
3553 scroll_pixel_position: gpui::Point<Pixels>,
3554 scroll_max: gpui::Point<f32>,
3555 em_width: Pixels,
3556 em_advance: Pixels,
3557 line_layouts: Vec<LineWithInvisibles>,
3558 snapshot: EditorSnapshot,
3559}
3560
3561#[derive(Debug, Copy, Clone)]
3562pub struct PointForPosition {
3563 pub previous_valid: DisplayPoint,
3564 pub next_valid: DisplayPoint,
3565 pub exact_unclipped: DisplayPoint,
3566 pub column_overshoot_after_line_end: u32,
3567}
3568
3569impl PointForPosition {
3570 pub fn as_valid(&self) -> Option<DisplayPoint> {
3571 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3572 Some(self.previous_valid)
3573 } else {
3574 None
3575 }
3576 }
3577}
3578
3579impl PositionMap {
3580 fn point_for_position(
3581 &self,
3582 text_bounds: Bounds<Pixels>,
3583 position: gpui::Point<Pixels>,
3584 ) -> PointForPosition {
3585 let scroll_position = self.snapshot.scroll_position();
3586 let position = position - text_bounds.origin;
3587 let y = position.y.max(px(0.)).min(self.size.height);
3588 let x = position.x + (scroll_position.x * self.em_width);
3589 let row = ((y / self.line_height) + scroll_position.y) as u32;
3590
3591 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3592 .line_layouts
3593 .get(row as usize - scroll_position.y as usize)
3594 .map(|LineWithInvisibles { line, .. }| line)
3595 {
3596 if let Some(ix) = line.index_for_x(x) {
3597 (ix as u32, px(0.))
3598 } else {
3599 (line.len as u32, px(0.).max(x - line.width))
3600 }
3601 } else {
3602 (0, x)
3603 };
3604
3605 let mut exact_unclipped = DisplayPoint::new(row, column);
3606 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3607 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3608
3609 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3610 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3611 PointForPosition {
3612 previous_valid,
3613 next_valid,
3614 exact_unclipped,
3615 column_overshoot_after_line_end,
3616 }
3617 }
3618}
3619
3620struct BlockLayout {
3621 row: u32,
3622 element: AnyElement,
3623 available_space: Size<AvailableSpace>,
3624 style: BlockStyle,
3625}
3626
3627fn layout_line(
3628 row: u32,
3629 snapshot: &EditorSnapshot,
3630 style: &EditorStyle,
3631 cx: &WindowContext,
3632) -> Result<ShapedLine> {
3633 let mut line = snapshot.line(row);
3634
3635 if line.len() > MAX_LINE_LEN {
3636 let mut len = MAX_LINE_LEN;
3637 while !line.is_char_boundary(len) {
3638 len -= 1;
3639 }
3640
3641 line.truncate(len);
3642 }
3643
3644 cx.text_system().shape_line(
3645 line.into(),
3646 style.text.font_size.to_pixels(cx.rem_size()),
3647 &[TextRun {
3648 len: snapshot.line_len(row) as usize,
3649 font: style.text.font(),
3650 color: Hsla::default(),
3651 background_color: None,
3652 underline: None,
3653 strikethrough: None,
3654 }],
3655 )
3656}
3657
3658pub struct CursorLayout {
3659 origin: gpui::Point<Pixels>,
3660 block_width: Pixels,
3661 line_height: Pixels,
3662 color: Hsla,
3663 shape: CursorShape,
3664 block_text: Option<ShapedLine>,
3665 cursor_name: Option<AnyElement>,
3666}
3667
3668#[derive(Debug)]
3669pub struct CursorName {
3670 string: SharedString,
3671 color: Hsla,
3672 is_top_row: bool,
3673}
3674
3675impl CursorLayout {
3676 pub fn new(
3677 origin: gpui::Point<Pixels>,
3678 block_width: Pixels,
3679 line_height: Pixels,
3680 color: Hsla,
3681 shape: CursorShape,
3682 block_text: Option<ShapedLine>,
3683 ) -> CursorLayout {
3684 CursorLayout {
3685 origin,
3686 block_width,
3687 line_height,
3688 color,
3689 shape,
3690 block_text,
3691 cursor_name: None,
3692 }
3693 }
3694
3695 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3696 Bounds {
3697 origin: self.origin + origin,
3698 size: size(self.block_width, self.line_height),
3699 }
3700 }
3701
3702 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3703 match self.shape {
3704 CursorShape::Bar => Bounds {
3705 origin: self.origin + origin,
3706 size: size(px(2.0), self.line_height),
3707 },
3708 CursorShape::Block | CursorShape::Hollow => Bounds {
3709 origin: self.origin + origin,
3710 size: size(self.block_width, self.line_height),
3711 },
3712 CursorShape::Underscore => Bounds {
3713 origin: self.origin
3714 + origin
3715 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3716 size: size(self.block_width, px(2.0)),
3717 },
3718 }
3719 }
3720
3721 pub fn layout(
3722 &mut self,
3723 origin: gpui::Point<Pixels>,
3724 cursor_name: Option<CursorName>,
3725 cx: &mut ElementContext,
3726 ) {
3727 if let Some(cursor_name) = cursor_name {
3728 let bounds = self.bounds(origin);
3729 let text_size = self.line_height / 1.5;
3730
3731 let name_origin = if cursor_name.is_top_row {
3732 point(bounds.right() - px(1.), bounds.top())
3733 } else {
3734 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3735 };
3736 let mut name_element = div()
3737 .bg(self.color)
3738 .text_size(text_size)
3739 .px_0p5()
3740 .line_height(text_size + px(2.))
3741 .text_color(cursor_name.color)
3742 .child(cursor_name.string.clone())
3743 .into_any_element();
3744
3745 name_element.layout(
3746 name_origin,
3747 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3748 cx,
3749 );
3750
3751 self.cursor_name = Some(name_element);
3752 }
3753 }
3754
3755 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3756 let bounds = self.bounds(origin);
3757
3758 //Draw background or border quad
3759 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3760 outline(bounds, self.color)
3761 } else {
3762 fill(bounds, self.color)
3763 };
3764
3765 if let Some(name) = &mut self.cursor_name {
3766 name.paint(cx);
3767 }
3768
3769 cx.paint_quad(cursor);
3770
3771 if let Some(block_text) = &self.block_text {
3772 block_text
3773 .paint(self.origin + origin, self.line_height, cx)
3774 .log_err();
3775 }
3776 }
3777
3778 pub fn shape(&self) -> CursorShape {
3779 self.shape
3780 }
3781}
3782
3783#[derive(Debug)]
3784pub struct HighlightedRange {
3785 pub start_y: Pixels,
3786 pub line_height: Pixels,
3787 pub lines: Vec<HighlightedRangeLine>,
3788 pub color: Hsla,
3789 pub corner_radius: Pixels,
3790}
3791
3792#[derive(Debug)]
3793pub struct HighlightedRangeLine {
3794 pub start_x: Pixels,
3795 pub end_x: Pixels,
3796}
3797
3798impl HighlightedRange {
3799 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3800 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3801 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3802 self.paint_lines(
3803 self.start_y + self.line_height,
3804 &self.lines[1..],
3805 bounds,
3806 cx,
3807 );
3808 } else {
3809 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3810 }
3811 }
3812
3813 fn paint_lines(
3814 &self,
3815 start_y: Pixels,
3816 lines: &[HighlightedRangeLine],
3817 _bounds: Bounds<Pixels>,
3818 cx: &mut ElementContext,
3819 ) {
3820 if lines.is_empty() {
3821 return;
3822 }
3823
3824 let first_line = lines.first().unwrap();
3825 let last_line = lines.last().unwrap();
3826
3827 let first_top_left = point(first_line.start_x, start_y);
3828 let first_top_right = point(first_line.end_x, start_y);
3829
3830 let curve_height = point(Pixels::ZERO, self.corner_radius);
3831 let curve_width = |start_x: Pixels, end_x: Pixels| {
3832 let max = (end_x - start_x) / 2.;
3833 let width = if max < self.corner_radius {
3834 max
3835 } else {
3836 self.corner_radius
3837 };
3838
3839 point(width, Pixels::ZERO)
3840 };
3841
3842 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3843 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3844 path.curve_to(first_top_right + curve_height, first_top_right);
3845
3846 let mut iter = lines.iter().enumerate().peekable();
3847 while let Some((ix, line)) = iter.next() {
3848 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3849
3850 if let Some((_, next_line)) = iter.peek() {
3851 let next_top_right = point(next_line.end_x, bottom_right.y);
3852
3853 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3854 Ordering::Equal => {
3855 path.line_to(bottom_right);
3856 }
3857 Ordering::Less => {
3858 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3859 path.line_to(bottom_right - curve_height);
3860 if self.corner_radius > Pixels::ZERO {
3861 path.curve_to(bottom_right - curve_width, bottom_right);
3862 }
3863 path.line_to(next_top_right + curve_width);
3864 if self.corner_radius > Pixels::ZERO {
3865 path.curve_to(next_top_right + curve_height, next_top_right);
3866 }
3867 }
3868 Ordering::Greater => {
3869 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3870 path.line_to(bottom_right - curve_height);
3871 if self.corner_radius > Pixels::ZERO {
3872 path.curve_to(bottom_right + curve_width, bottom_right);
3873 }
3874 path.line_to(next_top_right - curve_width);
3875 if self.corner_radius > Pixels::ZERO {
3876 path.curve_to(next_top_right + curve_height, next_top_right);
3877 }
3878 }
3879 }
3880 } else {
3881 let curve_width = curve_width(line.start_x, line.end_x);
3882 path.line_to(bottom_right - curve_height);
3883 if self.corner_radius > Pixels::ZERO {
3884 path.curve_to(bottom_right - curve_width, bottom_right);
3885 }
3886
3887 let bottom_left = point(line.start_x, bottom_right.y);
3888 path.line_to(bottom_left + curve_width);
3889 if self.corner_radius > Pixels::ZERO {
3890 path.curve_to(bottom_left - curve_height, bottom_left);
3891 }
3892 }
3893 }
3894
3895 if first_line.start_x > last_line.start_x {
3896 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3897 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3898 path.line_to(second_top_left + curve_height);
3899 if self.corner_radius > Pixels::ZERO {
3900 path.curve_to(second_top_left + curve_width, second_top_left);
3901 }
3902 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3903 path.line_to(first_bottom_left - curve_width);
3904 if self.corner_radius > Pixels::ZERO {
3905 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3906 }
3907 }
3908
3909 path.line_to(first_top_left + curve_height);
3910 if self.corner_radius > Pixels::ZERO {
3911 path.curve_to(first_top_left + top_curve_width, first_top_left);
3912 }
3913 path.line_to(first_top_right - top_curve_width);
3914
3915 cx.paint_path(path, self.color);
3916 }
3917}
3918
3919pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3920 (delta.pow(1.5) / 100.0).into()
3921}
3922
3923fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3924 (delta.pow(1.2) / 300.0).into()
3925}
3926
3927#[cfg(test)]
3928mod tests {
3929 use super::*;
3930 use crate::{
3931 display_map::{BlockDisposition, BlockProperties},
3932 editor_tests::{init_test, update_test_language_settings},
3933 Editor, MultiBuffer,
3934 };
3935 use gpui::TestAppContext;
3936 use language::language_settings;
3937 use log::info;
3938 use std::{num::NonZeroU32, sync::Arc};
3939 use util::test::sample_text;
3940
3941 #[gpui::test]
3942 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3943 init_test(cx, |_| {});
3944 let window = cx.add_window(|cx| {
3945 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3946 Editor::new(EditorMode::Full, buffer, None, cx)
3947 });
3948
3949 let editor = window.root(cx).unwrap();
3950 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3951 let element = EditorElement::new(&editor, style);
3952 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
3953
3954 let layouts = cx
3955 .update_window(*window, |_, cx| {
3956 cx.with_element_context(|cx| {
3957 element
3958 .layout_line_numbers(
3959 0..6,
3960 &Default::default(),
3961 Some(DisplayPoint::new(0, 0)),
3962 &snapshot,
3963 cx,
3964 )
3965 .0
3966 })
3967 })
3968 .unwrap();
3969 assert_eq!(layouts.len(), 6);
3970
3971 let relative_rows = window
3972 .update(cx, |editor, cx| {
3973 let snapshot = editor.snapshot(cx);
3974 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3975 })
3976 .unwrap();
3977 assert_eq!(relative_rows[&0], 3);
3978 assert_eq!(relative_rows[&1], 2);
3979 assert_eq!(relative_rows[&2], 1);
3980 // current line has no relative number
3981 assert_eq!(relative_rows[&4], 1);
3982 assert_eq!(relative_rows[&5], 2);
3983
3984 // works if cursor is before screen
3985 let relative_rows = window
3986 .update(cx, |editor, cx| {
3987 let snapshot = editor.snapshot(cx);
3988
3989 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3990 })
3991 .unwrap();
3992 assert_eq!(relative_rows.len(), 3);
3993 assert_eq!(relative_rows[&3], 2);
3994 assert_eq!(relative_rows[&4], 3);
3995 assert_eq!(relative_rows[&5], 4);
3996
3997 // works if cursor is after screen
3998 let relative_rows = window
3999 .update(cx, |editor, cx| {
4000 let snapshot = editor.snapshot(cx);
4001
4002 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
4003 })
4004 .unwrap();
4005 assert_eq!(relative_rows.len(), 3);
4006 assert_eq!(relative_rows[&0], 5);
4007 assert_eq!(relative_rows[&1], 4);
4008 assert_eq!(relative_rows[&2], 3);
4009 }
4010
4011 #[gpui::test]
4012 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
4013 init_test(cx, |_| {});
4014
4015 let window = cx.add_window(|cx| {
4016 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
4017 Editor::new(EditorMode::Full, buffer, None, cx)
4018 });
4019 let editor = window.root(cx).unwrap();
4020 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4021 let mut element = EditorElement::new(&editor, style);
4022
4023 window
4024 .update(cx, |editor, cx| {
4025 editor.cursor_shape = CursorShape::Block;
4026 editor.change_selections(None, cx, |s| {
4027 s.select_ranges([
4028 Point::new(0, 0)..Point::new(1, 0),
4029 Point::new(3, 2)..Point::new(3, 3),
4030 Point::new(5, 6)..Point::new(6, 0),
4031 ]);
4032 });
4033 })
4034 .unwrap();
4035 let state = cx
4036 .update_window(window.into(), |_view, cx| {
4037 cx.with_element_context(|cx| {
4038 element.after_layout(
4039 Bounds {
4040 origin: point(px(500.), px(500.)),
4041 size: size(px(500.), px(500.)),
4042 },
4043 &mut (),
4044 cx,
4045 )
4046 })
4047 })
4048 .unwrap();
4049
4050 assert_eq!(state.selections.len(), 1);
4051 let local_selections = &state.selections[0].1;
4052 assert_eq!(local_selections.len(), 3);
4053 // moves cursor back one line
4054 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
4055 assert_eq!(
4056 local_selections[0].range,
4057 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
4058 );
4059
4060 // moves cursor back one column
4061 assert_eq!(
4062 local_selections[1].range,
4063 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
4064 );
4065 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
4066
4067 // leaves cursor on the max point
4068 assert_eq!(
4069 local_selections[2].range,
4070 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
4071 );
4072 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
4073
4074 // active lines does not include 1 (even though the range of the selection does)
4075 assert_eq!(
4076 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
4077 vec![0, 3, 5, 6]
4078 );
4079
4080 // multi-buffer support
4081 // in DisplayPoint coordinates, this is what we're dealing with:
4082 // 0: [[file
4083 // 1: header]]
4084 // 2: aaaaaa
4085 // 3: bbbbbb
4086 // 4: cccccc
4087 // 5:
4088 // 6: ...
4089 // 7: ffffff
4090 // 8: gggggg
4091 // 9: hhhhhh
4092 // 10:
4093 // 11: [[file
4094 // 12: header]]
4095 // 13: bbbbbb
4096 // 14: cccccc
4097 // 15: dddddd
4098 let window = cx.add_window(|cx| {
4099 let buffer = MultiBuffer::build_multi(
4100 [
4101 (
4102 &(sample_text(8, 6, 'a') + "\n"),
4103 vec![
4104 Point::new(0, 0)..Point::new(3, 0),
4105 Point::new(4, 0)..Point::new(7, 0),
4106 ],
4107 ),
4108 (
4109 &(sample_text(8, 6, 'a') + "\n"),
4110 vec![Point::new(1, 0)..Point::new(3, 0)],
4111 ),
4112 ],
4113 cx,
4114 );
4115 Editor::new(EditorMode::Full, buffer, None, cx)
4116 });
4117 let editor = window.root(cx).unwrap();
4118 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4119 let mut element = EditorElement::new(&editor, style);
4120 let _state = window.update(cx, |editor, cx| {
4121 editor.cursor_shape = CursorShape::Block;
4122 editor.change_selections(None, cx, |s| {
4123 s.select_display_ranges([
4124 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
4125 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
4126 ]);
4127 });
4128 });
4129
4130 let state = cx
4131 .update_window(window.into(), |_view, cx| {
4132 cx.with_element_context(|cx| {
4133 element.after_layout(
4134 Bounds {
4135 origin: point(px(500.), px(500.)),
4136 size: size(px(500.), px(500.)),
4137 },
4138 &mut (),
4139 cx,
4140 )
4141 })
4142 })
4143 .unwrap();
4144 assert_eq!(state.selections.len(), 1);
4145 let local_selections = &state.selections[0].1;
4146 assert_eq!(local_selections.len(), 2);
4147
4148 // moves cursor on excerpt boundary back a line
4149 // and doesn't allow selection to bleed through
4150 assert_eq!(
4151 local_selections[0].range,
4152 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
4153 );
4154 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
4155 // moves cursor on buffer boundary back two lines
4156 // and doesn't allow selection to bleed through
4157 assert_eq!(
4158 local_selections[1].range,
4159 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
4160 );
4161 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
4162 }
4163
4164 #[gpui::test]
4165 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
4166 init_test(cx, |_| {});
4167
4168 let window = cx.add_window(|cx| {
4169 let buffer = MultiBuffer::build_simple("", cx);
4170 Editor::new(EditorMode::Full, buffer, None, cx)
4171 });
4172 let editor = window.root(cx).unwrap();
4173 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4174 window
4175 .update(cx, |editor, cx| {
4176 editor.set_placeholder_text("hello", cx);
4177 editor.insert_blocks(
4178 [BlockProperties {
4179 style: BlockStyle::Fixed,
4180 disposition: BlockDisposition::Above,
4181 height: 3,
4182 position: Anchor::min(),
4183 render: Arc::new(|_| div().into_any()),
4184 }],
4185 None,
4186 cx,
4187 );
4188
4189 // Blur the editor so that it displays placeholder text.
4190 cx.blur();
4191 })
4192 .unwrap();
4193
4194 let mut element = EditorElement::new(&editor, style);
4195 let state = cx
4196 .update_window(window.into(), |_view, cx| {
4197 cx.with_element_context(|cx| {
4198 element.after_layout(
4199 Bounds {
4200 origin: point(px(500.), px(500.)),
4201 size: size(px(500.), px(500.)),
4202 },
4203 &mut (),
4204 cx,
4205 )
4206 })
4207 })
4208 .unwrap();
4209
4210 assert_eq!(state.position_map.line_layouts.len(), 4);
4211 assert_eq!(
4212 state
4213 .line_numbers
4214 .iter()
4215 .map(Option::is_some)
4216 .collect::<Vec<_>>(),
4217 &[false, false, false, true]
4218 );
4219 }
4220
4221 #[gpui::test]
4222 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
4223 const TAB_SIZE: u32 = 4;
4224
4225 let input_text = "\t \t|\t| a b";
4226 let expected_invisibles = vec![
4227 Invisible::Tab {
4228 line_start_offset: 0,
4229 },
4230 Invisible::Whitespace {
4231 line_offset: TAB_SIZE as usize,
4232 },
4233 Invisible::Tab {
4234 line_start_offset: TAB_SIZE as usize + 1,
4235 },
4236 Invisible::Tab {
4237 line_start_offset: TAB_SIZE as usize * 2 + 1,
4238 },
4239 Invisible::Whitespace {
4240 line_offset: TAB_SIZE as usize * 3 + 1,
4241 },
4242 Invisible::Whitespace {
4243 line_offset: TAB_SIZE as usize * 3 + 3,
4244 },
4245 ];
4246 assert_eq!(
4247 expected_invisibles.len(),
4248 input_text
4249 .chars()
4250 .filter(|initial_char| initial_char.is_whitespace())
4251 .count(),
4252 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4253 );
4254
4255 init_test(cx, |s| {
4256 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4257 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
4258 });
4259
4260 let actual_invisibles =
4261 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
4262
4263 assert_eq!(expected_invisibles, actual_invisibles);
4264 }
4265
4266 #[gpui::test]
4267 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
4268 init_test(cx, |s| {
4269 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4270 s.defaults.tab_size = NonZeroU32::new(4);
4271 });
4272
4273 for editor_mode_without_invisibles in [
4274 EditorMode::SingleLine,
4275 EditorMode::AutoHeight { max_lines: 100 },
4276 ] {
4277 let invisibles = collect_invisibles_from_new_editor(
4278 cx,
4279 editor_mode_without_invisibles,
4280 "\t\t\t| | a b",
4281 px(500.0),
4282 );
4283 assert!(invisibles.is_empty(),
4284 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4285 }
4286 }
4287
4288 #[gpui::test]
4289 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4290 let tab_size = 4;
4291 let input_text = "a\tbcd ".repeat(9);
4292 let repeated_invisibles = [
4293 Invisible::Tab {
4294 line_start_offset: 1,
4295 },
4296 Invisible::Whitespace {
4297 line_offset: tab_size as usize + 3,
4298 },
4299 Invisible::Whitespace {
4300 line_offset: tab_size as usize + 4,
4301 },
4302 Invisible::Whitespace {
4303 line_offset: tab_size as usize + 5,
4304 },
4305 ];
4306 let expected_invisibles = std::iter::once(repeated_invisibles)
4307 .cycle()
4308 .take(9)
4309 .flatten()
4310 .collect::<Vec<_>>();
4311 assert_eq!(
4312 expected_invisibles.len(),
4313 input_text
4314 .chars()
4315 .filter(|initial_char| initial_char.is_whitespace())
4316 .count(),
4317 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4318 );
4319 info!("Expected invisibles: {expected_invisibles:?}");
4320
4321 init_test(cx, |_| {});
4322
4323 // Put the same string with repeating whitespace pattern into editors of various size,
4324 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4325 let resize_step = 10.0;
4326 let mut editor_width = 200.0;
4327 while editor_width <= 1000.0 {
4328 update_test_language_settings(cx, |s| {
4329 s.defaults.tab_size = NonZeroU32::new(tab_size);
4330 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4331 s.defaults.preferred_line_length = Some(editor_width as u32);
4332 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4333 });
4334
4335 let actual_invisibles = collect_invisibles_from_new_editor(
4336 cx,
4337 EditorMode::Full,
4338 &input_text,
4339 px(editor_width),
4340 );
4341
4342 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4343 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4344 let mut i = 0;
4345 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4346 i = actual_index;
4347 match expected_invisibles.get(i) {
4348 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4349 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4350 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4351 _ => {
4352 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4353 }
4354 },
4355 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4356 }
4357 }
4358 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4359 assert!(
4360 missing_expected_invisibles.is_empty(),
4361 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4362 );
4363
4364 editor_width += resize_step;
4365 }
4366 }
4367
4368 fn collect_invisibles_from_new_editor(
4369 cx: &mut TestAppContext,
4370 editor_mode: EditorMode,
4371 input_text: &str,
4372 editor_width: Pixels,
4373 ) -> Vec<Invisible> {
4374 info!(
4375 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4376 editor_width.0
4377 );
4378 let window = cx.add_window(|cx| {
4379 let buffer = MultiBuffer::build_simple(&input_text, cx);
4380 Editor::new(editor_mode, buffer, None, cx)
4381 });
4382 let editor = window.root(cx).unwrap();
4383 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4384 let mut element = EditorElement::new(&editor, style);
4385 window
4386 .update(cx, |editor, cx| {
4387 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4388 editor.set_wrap_width(Some(editor_width), cx);
4389 })
4390 .unwrap();
4391 let layout_state = cx
4392 .update_window(window.into(), |_, cx| {
4393 cx.with_element_context(|cx| {
4394 element.after_layout(
4395 Bounds {
4396 origin: point(px(500.), px(500.)),
4397 size: size(px(500.), px(500.)),
4398 },
4399 &mut (),
4400 cx,
4401 )
4402 })
4403 })
4404 .unwrap();
4405
4406 layout_state
4407 .position_map
4408 .line_layouts
4409 .iter()
4410 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
4411 .cloned()
4412 .collect()
4413 }
4414}
4415
4416pub fn register_action<T: Action>(
4417 view: &View<Editor>,
4418 cx: &mut WindowContext,
4419 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4420) {
4421 let view = view.clone();
4422 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4423 let action = action.downcast_ref().unwrap();
4424 if phase == DispatchPhase::Bubble {
4425 view.update(cx, |editor, cx| {
4426 listener(editor, action, cx);
4427 })
4428 }
4429 })
4430}
4431
4432fn compute_auto_height_layout(
4433 editor: &mut Editor,
4434 max_lines: usize,
4435 max_line_number_width: Pixels,
4436 known_dimensions: Size<Option<Pixels>>,
4437 cx: &mut ViewContext<Editor>,
4438) -> Option<Size<Pixels>> {
4439 let width = known_dimensions.width?;
4440 if let Some(height) = known_dimensions.height {
4441 return Some(size(width, height));
4442 }
4443
4444 let style = editor.style.as_ref().unwrap();
4445 let font_id = cx.text_system().resolve_font(&style.text.font());
4446 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4447 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4448 let em_width = cx
4449 .text_system()
4450 .typographic_bounds(font_id, font_size, 'm')
4451 .unwrap()
4452 .size
4453 .width;
4454
4455 let mut snapshot = editor.snapshot(cx);
4456 let gutter_dimensions =
4457 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4458
4459 editor.gutter_width = gutter_dimensions.width;
4460 let text_width = width - gutter_dimensions.width;
4461 let overscroll = size(em_width, px(0.));
4462
4463 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4464 if editor.set_wrap_width(Some(editor_width), cx) {
4465 snapshot = editor.snapshot(cx);
4466 }
4467
4468 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4469 let height = scroll_height
4470 .max(line_height)
4471 .min(line_height * max_lines as f32);
4472
4473 Some(size(width, height))
4474}