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_up);
181 register_action(view, cx, Editor::duplicate_line_down);
182 register_action(view, cx, Editor::move_line_up);
183 register_action(view, cx, Editor::move_line_down);
184 register_action(view, cx, Editor::transpose);
185 register_action(view, cx, Editor::cut);
186 register_action(view, cx, Editor::copy);
187 register_action(view, cx, Editor::paste);
188 register_action(view, cx, Editor::undo);
189 register_action(view, cx, Editor::redo);
190 register_action(view, cx, Editor::move_page_up);
191 register_action(view, cx, Editor::move_page_down);
192 register_action(view, cx, Editor::next_screen);
193 register_action(view, cx, Editor::scroll_cursor_top);
194 register_action(view, cx, Editor::scroll_cursor_center);
195 register_action(view, cx, Editor::scroll_cursor_bottom);
196 register_action(view, cx, |editor, _: &LineDown, cx| {
197 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
198 });
199 register_action(view, cx, |editor, _: &LineUp, cx| {
200 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
201 });
202 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
203 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
204 });
205 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
206 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
207 });
208 register_action(view, cx, |editor, _: &PageDown, cx| {
209 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
210 });
211 register_action(view, cx, |editor, _: &PageUp, cx| {
212 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
213 });
214 register_action(view, cx, Editor::move_to_previous_word_start);
215 register_action(view, cx, Editor::move_to_previous_subword_start);
216 register_action(view, cx, Editor::move_to_next_word_end);
217 register_action(view, cx, Editor::move_to_next_subword_end);
218 register_action(view, cx, Editor::move_to_beginning_of_line);
219 register_action(view, cx, Editor::move_to_end_of_line);
220 register_action(view, cx, Editor::move_to_start_of_paragraph);
221 register_action(view, cx, Editor::move_to_end_of_paragraph);
222 register_action(view, cx, Editor::move_to_beginning);
223 register_action(view, cx, Editor::move_to_end);
224 register_action(view, cx, Editor::select_up);
225 register_action(view, cx, Editor::select_down);
226 register_action(view, cx, Editor::select_left);
227 register_action(view, cx, Editor::select_right);
228 register_action(view, cx, Editor::select_to_previous_word_start);
229 register_action(view, cx, Editor::select_to_previous_subword_start);
230 register_action(view, cx, Editor::select_to_next_word_end);
231 register_action(view, cx, Editor::select_to_next_subword_end);
232 register_action(view, cx, Editor::select_to_beginning_of_line);
233 register_action(view, cx, Editor::select_to_end_of_line);
234 register_action(view, cx, Editor::select_to_start_of_paragraph);
235 register_action(view, cx, Editor::select_to_end_of_paragraph);
236 register_action(view, cx, Editor::select_to_beginning);
237 register_action(view, cx, Editor::select_to_end);
238 register_action(view, cx, Editor::select_all);
239 register_action(view, cx, |editor, action, cx| {
240 editor.select_all_matches(action, cx).log_err();
241 });
242 register_action(view, cx, Editor::select_line);
243 register_action(view, cx, Editor::split_selection_into_lines);
244 register_action(view, cx, Editor::add_selection_above);
245 register_action(view, cx, Editor::add_selection_below);
246 register_action(view, cx, |editor, action, cx| {
247 editor.select_next(action, cx).log_err();
248 });
249 register_action(view, cx, |editor, action, cx| {
250 editor.select_previous(action, cx).log_err();
251 });
252 register_action(view, cx, Editor::toggle_comments);
253 register_action(view, cx, Editor::select_larger_syntax_node);
254 register_action(view, cx, Editor::select_smaller_syntax_node);
255 register_action(view, cx, Editor::move_to_enclosing_bracket);
256 register_action(view, cx, Editor::undo_selection);
257 register_action(view, cx, Editor::redo_selection);
258 register_action(view, cx, Editor::go_to_diagnostic);
259 register_action(view, cx, Editor::go_to_prev_diagnostic);
260 register_action(view, cx, Editor::go_to_hunk);
261 register_action(view, cx, Editor::go_to_prev_hunk);
262 register_action(view, cx, |editor, a, cx| {
263 editor.go_to_definition(a, cx).detach_and_log_err(cx);
264 });
265 register_action(view, cx, |editor, a, cx| {
266 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
267 });
268 register_action(view, cx, |editor, a, cx| {
269 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
270 });
271 register_action(view, cx, |editor, a, cx| {
272 editor
273 .go_to_implementation_split(a, cx)
274 .detach_and_log_err(cx);
275 });
276 register_action(view, cx, |editor, a, cx| {
277 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
278 });
279 register_action(view, cx, |editor, a, cx| {
280 editor
281 .go_to_type_definition_split(a, cx)
282 .detach_and_log_err(cx);
283 });
284 register_action(view, cx, Editor::open_url);
285 register_action(view, cx, Editor::fold);
286 register_action(view, cx, Editor::fold_at);
287 register_action(view, cx, Editor::unfold_lines);
288 register_action(view, cx, Editor::unfold_at);
289 register_action(view, cx, Editor::fold_selected_ranges);
290 register_action(view, cx, Editor::show_completions);
291 register_action(view, cx, Editor::toggle_code_actions);
292 register_action(view, cx, Editor::open_excerpts);
293 register_action(view, cx, Editor::open_excerpts_in_split);
294 register_action(view, cx, Editor::toggle_soft_wrap);
295 register_action(view, cx, Editor::toggle_line_numbers);
296 register_action(view, cx, Editor::toggle_inlay_hints);
297 register_action(view, cx, hover_popover::hover);
298 register_action(view, cx, Editor::reveal_in_finder);
299 register_action(view, cx, Editor::copy_path);
300 register_action(view, cx, Editor::copy_relative_path);
301 register_action(view, cx, Editor::copy_highlight_json);
302 register_action(view, cx, Editor::copy_permalink_to_line);
303 register_action(view, cx, Editor::open_permalink_to_line);
304 register_action(view, cx, |editor, action, cx| {
305 if let Some(task) = editor.format(action, cx) {
306 task.detach_and_log_err(cx);
307 } else {
308 cx.propagate();
309 }
310 });
311 register_action(view, cx, Editor::restart_language_server);
312 register_action(view, cx, Editor::show_character_palette);
313 register_action(view, cx, |editor, action, cx| {
314 if let Some(task) = editor.confirm_completion(action, cx) {
315 task.detach_and_log_err(cx);
316 } else {
317 cx.propagate();
318 }
319 });
320 register_action(view, cx, |editor, action, cx| {
321 if let Some(task) = editor.confirm_code_action(action, cx) {
322 task.detach_and_log_err(cx);
323 } else {
324 cx.propagate();
325 }
326 });
327 register_action(view, cx, |editor, action, cx| {
328 if let Some(task) = editor.rename(action, cx) {
329 task.detach_and_log_err(cx);
330 } else {
331 cx.propagate();
332 }
333 });
334 register_action(view, cx, |editor, action, cx| {
335 if let Some(task) = editor.confirm_rename(action, cx) {
336 task.detach_and_log_err(cx);
337 } else {
338 cx.propagate();
339 }
340 });
341 register_action(view, cx, |editor, action, cx| {
342 if let Some(task) = editor.find_all_references(action, cx) {
343 task.detach_and_log_err(cx);
344 } else {
345 cx.propagate();
346 }
347 });
348 register_action(view, cx, Editor::next_inline_completion);
349 register_action(view, cx, Editor::previous_inline_completion);
350 register_action(view, cx, Editor::show_inline_completion);
351 register_action(view, cx, Editor::context_menu_first);
352 register_action(view, cx, Editor::context_menu_prev);
353 register_action(view, cx, Editor::context_menu_next);
354 register_action(view, cx, Editor::context_menu_last);
355 register_action(view, cx, Editor::display_cursor_names);
356 register_action(view, cx, Editor::unique_lines_case_insensitive);
357 register_action(view, cx, Editor::unique_lines_case_sensitive);
358 register_action(view, cx, Editor::accept_partial_inline_completion);
359 register_action(view, cx, Editor::revert_selected_hunks);
360 }
361
362 fn register_key_listeners(&self, cx: &mut ElementContext, layout: &EditorLayout) {
363 let position_map = layout.position_map.clone();
364 cx.on_key_event({
365 let editor = self.editor.clone();
366 let text_hitbox = layout.text_hitbox.clone();
367 move |event: &ModifiersChangedEvent, phase, cx| {
368 if phase != DispatchPhase::Bubble {
369 return;
370 }
371
372 editor.update(cx, |editor, cx| {
373 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
374 })
375 }
376 });
377 }
378
379 fn modifiers_changed(
380 editor: &mut Editor,
381 event: &ModifiersChangedEvent,
382 position_map: &PositionMap,
383 text_hitbox: &Hitbox,
384 cx: &mut ViewContext<Editor>,
385 ) {
386 let mouse_position = cx.mouse_position();
387 if !text_hitbox.is_hovered(cx) {
388 return;
389 }
390
391 editor.update_hovered_link(
392 position_map.point_for_position(text_hitbox.bounds, mouse_position),
393 &position_map.snapshot,
394 event.modifiers,
395 cx,
396 )
397 }
398
399 fn mouse_left_down(
400 editor: &mut Editor,
401 event: &MouseDownEvent,
402 position_map: &PositionMap,
403 text_hitbox: &Hitbox,
404 gutter_hitbox: &Hitbox,
405 cx: &mut ViewContext<Editor>,
406 ) {
407 if cx.default_prevented() {
408 return;
409 }
410
411 let mut click_count = event.click_count;
412 let mut modifiers = event.modifiers;
413
414 if gutter_hitbox.is_hovered(cx) {
415 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
416 } else if !text_hitbox.is_hovered(cx) {
417 return;
418 }
419
420 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
421 match EditorSettings::get_global(cx).double_click_in_multibuffer {
422 DoubleClickInMultibuffer::Select => {
423 // do nothing special on double click, all selection logic is below
424 }
425 DoubleClickInMultibuffer::Open => {
426 if modifiers.alt {
427 // if double click is made with alt, pretend it's a regular double click without opening and alt,
428 // and run the selection logic.
429 modifiers.alt = false;
430 } else {
431 // if double click is made without alt, open the corresponding excerp
432 editor.open_excerpts(&OpenExcerpts, cx);
433 return;
434 }
435 }
436 }
437 }
438
439 let point_for_position =
440 position_map.point_for_position(text_hitbox.bounds, event.position);
441 let position = point_for_position.previous_valid;
442 if modifiers.shift && modifiers.alt {
443 editor.select(
444 SelectPhase::BeginColumnar {
445 position,
446 goal_column: point_for_position.exact_unclipped.column(),
447 },
448 cx,
449 );
450 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
451 editor.select(
452 SelectPhase::Extend {
453 position,
454 click_count,
455 },
456 cx,
457 );
458 } else {
459 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
460 let multi_cursor_modifier = match multi_cursor_setting {
461 MultiCursorModifier::Alt => modifiers.alt,
462 MultiCursorModifier::Cmd => modifiers.command,
463 };
464 editor.select(
465 SelectPhase::Begin {
466 position,
467 add: multi_cursor_modifier,
468 click_count,
469 },
470 cx,
471 );
472 }
473
474 cx.stop_propagation();
475 }
476
477 fn mouse_right_down(
478 editor: &mut Editor,
479 event: &MouseDownEvent,
480 position_map: &PositionMap,
481 text_hitbox: &Hitbox,
482 cx: &mut ViewContext<Editor>,
483 ) {
484 if !text_hitbox.is_hovered(cx) {
485 return;
486 }
487 let point_for_position =
488 position_map.point_for_position(text_hitbox.bounds, event.position);
489 mouse_context_menu::deploy_context_menu(
490 editor,
491 event.position,
492 point_for_position.previous_valid,
493 cx,
494 );
495 cx.stop_propagation();
496 }
497
498 fn mouse_up(
499 editor: &mut Editor,
500 event: &MouseUpEvent,
501 position_map: &PositionMap,
502 text_hitbox: &Hitbox,
503 cx: &mut ViewContext<Editor>,
504 ) {
505 let end_selection = editor.has_pending_selection();
506 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
507
508 if end_selection {
509 editor.select(SelectPhase::End, cx);
510 }
511
512 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
513 let multi_cursor_modifier = match multi_cursor_setting {
514 MultiCursorModifier::Alt => event.modifiers.command,
515 MultiCursorModifier::Cmd => event.modifiers.alt,
516 };
517
518 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
519 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
520 editor.handle_click_hovered_link(point, event.modifiers, cx);
521
522 cx.stop_propagation();
523 } else if end_selection {
524 cx.stop_propagation();
525 }
526 }
527
528 fn mouse_dragged(
529 editor: &mut Editor,
530 event: &MouseMoveEvent,
531 position_map: &PositionMap,
532 text_bounds: Bounds<Pixels>,
533 cx: &mut ViewContext<Editor>,
534 ) {
535 if !editor.has_pending_selection() {
536 return;
537 }
538
539 let point_for_position = position_map.point_for_position(text_bounds, event.position);
540 let mut scroll_delta = gpui::Point::<f32>::default();
541 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
542 let top = text_bounds.origin.y + vertical_margin;
543 let bottom = text_bounds.lower_left().y - vertical_margin;
544 if event.position.y < top {
545 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
546 }
547 if event.position.y > bottom {
548 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
549 }
550
551 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
552 let left = text_bounds.origin.x + horizontal_margin;
553 let right = text_bounds.upper_right().x - horizontal_margin;
554 if event.position.x < left {
555 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
556 }
557 if event.position.x > right {
558 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
559 }
560
561 editor.select(
562 SelectPhase::Update {
563 position: point_for_position.previous_valid,
564 goal_column: point_for_position.exact_unclipped.column(),
565 scroll_delta,
566 },
567 cx,
568 );
569 }
570
571 fn mouse_moved(
572 editor: &mut Editor,
573 event: &MouseMoveEvent,
574 position_map: &PositionMap,
575 text_hitbox: &Hitbox,
576 gutter_hitbox: &Hitbox,
577 cx: &mut ViewContext<Editor>,
578 ) {
579 let modifiers = event.modifiers;
580 let gutter_hovered = gutter_hitbox.is_hovered(cx);
581 editor.set_gutter_hovered(gutter_hovered, cx);
582
583 // Don't trigger hover popover if mouse is hovering over context menu
584 if text_hitbox.is_hovered(cx) {
585 let point_for_position =
586 position_map.point_for_position(text_hitbox.bounds, event.position);
587
588 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
589
590 if let Some(point) = point_for_position.as_valid() {
591 hover_at(editor, Some(point), cx);
592 Self::update_visible_cursor(editor, point, position_map, cx);
593 } else {
594 hover_at(editor, None, cx);
595 }
596 } else {
597 editor.hide_hovered_link(cx);
598 hover_at(editor, None, cx);
599 if gutter_hovered {
600 cx.stop_propagation();
601 }
602 }
603 }
604
605 fn update_visible_cursor(
606 editor: &mut Editor,
607 point: DisplayPoint,
608 position_map: &PositionMap,
609 cx: &mut ViewContext<Editor>,
610 ) {
611 let snapshot = &position_map.snapshot;
612 let Some(hub) = editor.collaboration_hub() else {
613 return;
614 };
615 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
616 ..DisplayPoint::new(
617 point.row(),
618 (point.column() + 1).min(snapshot.line_len(point.row())),
619 );
620
621 let range = snapshot
622 .buffer_snapshot
623 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
624 ..snapshot
625 .buffer_snapshot
626 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
627
628 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
629 return;
630 };
631 let key = crate::HoveredCursor {
632 replica_id: selection.replica_id,
633 selection_id: selection.selection.id,
634 };
635 editor.hovered_cursors.insert(
636 key.clone(),
637 cx.spawn(|editor, mut cx| async move {
638 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
639 editor
640 .update(&mut cx, |editor, cx| {
641 editor.hovered_cursors.remove(&key);
642 cx.notify();
643 })
644 .ok();
645 }),
646 );
647 cx.notify()
648 }
649
650 fn layout_selections(
651 &self,
652 start_anchor: Anchor,
653 end_anchor: Anchor,
654 snapshot: &EditorSnapshot,
655 start_row: u32,
656 end_row: u32,
657 cx: &mut ElementContext,
658 ) -> (
659 Vec<(PlayerColor, Vec<SelectionLayout>)>,
660 BTreeMap<u32, bool>,
661 Option<DisplayPoint>,
662 ) {
663 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
664 let mut active_rows = BTreeMap::new();
665 let mut newest_selection_head = None;
666 let editor = self.editor.read(cx);
667
668 if editor.show_local_selections {
669 let mut local_selections: Vec<Selection<Point>> = editor
670 .selections
671 .disjoint_in_range(start_anchor..end_anchor, cx);
672 local_selections.extend(editor.selections.pending(cx));
673 let mut layouts = Vec::new();
674 let newest = editor.selections.newest(cx);
675 for selection in local_selections.drain(..) {
676 let is_empty = selection.start == selection.end;
677 let is_newest = selection == newest;
678
679 let layout = SelectionLayout::new(
680 selection,
681 editor.selections.line_mode,
682 editor.cursor_shape,
683 &snapshot.display_snapshot,
684 is_newest,
685 editor.leader_peer_id.is_none(),
686 None,
687 );
688 if is_newest {
689 newest_selection_head = Some(layout.head);
690 }
691
692 for row in cmp::max(layout.active_rows.start, start_row)
693 ..=cmp::min(layout.active_rows.end, end_row)
694 {
695 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
696 *contains_non_empty_selection |= !is_empty;
697 }
698 layouts.push(layout);
699 }
700
701 let player = if editor.read_only(cx) {
702 cx.theme().players().read_only()
703 } else {
704 self.style.local_player
705 };
706
707 selections.push((player, layouts));
708 }
709
710 if let Some(collaboration_hub) = &editor.collaboration_hub {
711 // When following someone, render the local selections in their color.
712 if let Some(leader_id) = editor.leader_peer_id {
713 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
714 if let Some(participant_index) = collaboration_hub
715 .user_participant_indices(cx)
716 .get(&collaborator.user_id)
717 {
718 if let Some((local_selection_style, _)) = selections.first_mut() {
719 *local_selection_style = cx
720 .theme()
721 .players()
722 .color_for_participant(participant_index.0);
723 }
724 }
725 }
726 }
727
728 let mut remote_selections = HashMap::default();
729 for selection in snapshot.remote_selections_in_range(
730 &(start_anchor..end_anchor),
731 collaboration_hub.as_ref(),
732 cx,
733 ) {
734 let selection_style = if let Some(participant_index) = selection.participant_index {
735 cx.theme()
736 .players()
737 .color_for_participant(participant_index.0)
738 } else {
739 cx.theme().players().absent()
740 };
741
742 // Don't re-render the leader's selections, since the local selections
743 // match theirs.
744 if Some(selection.peer_id) == editor.leader_peer_id {
745 continue;
746 }
747 let key = HoveredCursor {
748 replica_id: selection.replica_id,
749 selection_id: selection.selection.id,
750 };
751
752 let is_shown =
753 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
754
755 remote_selections
756 .entry(selection.replica_id)
757 .or_insert((selection_style, Vec::new()))
758 .1
759 .push(SelectionLayout::new(
760 selection.selection,
761 selection.line_mode,
762 selection.cursor_shape,
763 &snapshot.display_snapshot,
764 false,
765 false,
766 if is_shown { selection.user_name } else { None },
767 ));
768 }
769
770 selections.extend(remote_selections.into_values());
771 }
772 (selections, active_rows, newest_selection_head)
773 }
774
775 #[allow(clippy::too_many_arguments)]
776 fn layout_folds(
777 &self,
778 snapshot: &EditorSnapshot,
779 content_origin: gpui::Point<Pixels>,
780 visible_anchor_range: Range<Anchor>,
781 visible_display_row_range: Range<u32>,
782 scroll_pixel_position: gpui::Point<Pixels>,
783 line_height: Pixels,
784 line_layouts: &[LineWithInvisibles],
785 cx: &mut ElementContext,
786 ) -> Vec<FoldLayout> {
787 snapshot
788 .folds_in_range(visible_anchor_range.clone())
789 .filter_map(|fold| {
790 let fold_range = fold.range.clone();
791 let display_range = fold.range.start.to_display_point(&snapshot)
792 ..fold.range.end.to_display_point(&snapshot);
793 debug_assert_eq!(display_range.start.row(), display_range.end.row());
794 let row = display_range.start.row();
795 debug_assert!(row < visible_display_row_range.end);
796 let line_layout = line_layouts
797 .get((row - visible_display_row_range.start) as usize)
798 .map(|l| &l.line)?;
799
800 let start_x = content_origin.x
801 + line_layout.x_for_index(display_range.start.column() as usize)
802 - scroll_pixel_position.x;
803 let start_y = content_origin.y + row as f32 * line_height - scroll_pixel_position.y;
804 let end_x = content_origin.x
805 + line_layout.x_for_index(display_range.end.column() as usize)
806 - scroll_pixel_position.x;
807
808 let fold_bounds = Bounds {
809 origin: point(start_x, start_y),
810 size: size(end_x - start_x, line_height),
811 };
812
813 let mut hover_element = div()
814 .id(fold.id)
815 .size_full()
816 .cursor_pointer()
817 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
818 .on_click(
819 cx.listener_for(&self.editor, move |editor: &mut Editor, _, cx| {
820 editor.unfold_ranges(
821 [fold_range.start..fold_range.end],
822 true,
823 false,
824 cx,
825 );
826 cx.stop_propagation();
827 }),
828 )
829 .into_any();
830 hover_element.layout(fold_bounds.origin, fold_bounds.size.into(), cx);
831 Some(FoldLayout {
832 display_range,
833 hover_element,
834 })
835 })
836 .collect()
837 }
838
839 #[allow(clippy::too_many_arguments)]
840 fn layout_cursors(
841 &self,
842 snapshot: &EditorSnapshot,
843 selections: &[(PlayerColor, Vec<SelectionLayout>)],
844 visible_display_row_range: Range<u32>,
845 line_layouts: &[LineWithInvisibles],
846 text_hitbox: &Hitbox,
847 content_origin: gpui::Point<Pixels>,
848 scroll_pixel_position: gpui::Point<Pixels>,
849 line_height: Pixels,
850 em_width: Pixels,
851 cx: &mut ElementContext,
852 ) -> Vec<CursorLayout> {
853 self.editor.update(cx, |editor, cx| {
854 let mut cursors = Vec::new();
855 for (player_color, selections) in selections {
856 for selection in selections {
857 let cursor_position = selection.head;
858 if (selection.is_local && !editor.show_local_cursors(cx))
859 || !visible_display_row_range.contains(&cursor_position.row())
860 {
861 continue;
862 }
863
864 let cursor_row_layout = &line_layouts
865 [(cursor_position.row() - visible_display_row_range.start) as usize]
866 .line;
867 let cursor_column = cursor_position.column() as usize;
868
869 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
870 let mut block_width =
871 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
872 if block_width == Pixels::ZERO {
873 block_width = em_width;
874 }
875 let block_text = if let CursorShape::Block = selection.cursor_shape {
876 snapshot
877 .chars_at(cursor_position)
878 .next()
879 .and_then(|(character, _)| {
880 let text = if character == '\n' {
881 SharedString::from(" ")
882 } else {
883 SharedString::from(character.to_string())
884 };
885 let len = text.len();
886 cx.text_system()
887 .shape_line(
888 text,
889 cursor_row_layout.font_size,
890 &[TextRun {
891 len,
892 font: self.style.text.font(),
893 color: self.style.background,
894 background_color: None,
895 strikethrough: None,
896 underline: None,
897 }],
898 )
899 .log_err()
900 })
901 } else {
902 None
903 };
904
905 let x = cursor_character_x - scroll_pixel_position.x;
906 let y = (cursor_position.row() as f32 - scroll_pixel_position.y / line_height)
907 * line_height;
908 if selection.is_newest {
909 editor.pixel_position_of_newest_cursor = Some(point(
910 text_hitbox.origin.x + x + block_width / 2.,
911 text_hitbox.origin.y + y + line_height / 2.,
912 ))
913 }
914
915 let mut cursor = CursorLayout {
916 color: player_color.cursor,
917 block_width,
918 origin: point(x, y),
919 line_height,
920 shape: selection.cursor_shape,
921 block_text,
922 cursor_name: None,
923 };
924 let cursor_name = selection.user_name.clone().map(|name| CursorName {
925 string: name,
926 color: self.style.background,
927 is_top_row: cursor_position.row() == 0,
928 });
929 cx.with_element_context(|cx| cursor.layout(content_origin, cursor_name, cx));
930 cursors.push(cursor);
931 }
932 }
933 cursors
934 })
935 }
936
937 fn layout_scrollbar(
938 &self,
939 snapshot: &EditorSnapshot,
940 bounds: Bounds<Pixels>,
941 scroll_position: gpui::Point<f32>,
942 line_height: Pixels,
943 height_in_lines: f32,
944 cx: &mut ElementContext,
945 ) -> Option<ScrollbarLayout> {
946 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
947 let show_scrollbars = match scrollbar_settings.show {
948 ShowScrollbar::Auto => {
949 let editor = self.editor.read(cx);
950 let is_singleton = editor.is_singleton(cx);
951 // Git
952 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
953 ||
954 // Selections
955 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
956 ||
957 // Symbols Selections
958 (is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
959 ||
960 // Diagnostics
961 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
962 ||
963 // Scrollmanager
964 editor.scroll_manager.scrollbars_visible()
965 }
966 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
967 ShowScrollbar::Always => true,
968 ShowScrollbar::Never => false,
969 };
970 if snapshot.mode != EditorMode::Full {
971 return None;
972 }
973
974 let visible_row_range = scroll_position.y..scroll_position.y + height_in_lines;
975
976 // If a drag took place after we started dragging the scrollbar,
977 // cancel the scrollbar drag.
978 if cx.has_active_drag() {
979 self.editor.update(cx, |editor, cx| {
980 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
981 });
982 }
983
984 let track_bounds = Bounds::from_corners(
985 point(self.scrollbar_left(&bounds), bounds.origin.y),
986 point(bounds.lower_right().x, bounds.lower_left().y),
987 );
988
989 let scroll_height = snapshot.max_point().row() as f32 + height_in_lines;
990 let mut height = bounds.size.height;
991 let mut first_row_y_offset = px(0.0);
992
993 // Impose a minimum height on the scrollbar thumb
994 let row_height = height / scroll_height;
995 let min_thumb_height = line_height;
996 let thumb_height = height_in_lines * row_height;
997 if thumb_height < min_thumb_height {
998 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
999 height -= min_thumb_height - thumb_height;
1000 }
1001
1002 Some(ScrollbarLayout {
1003 hitbox: cx.insert_hitbox(track_bounds, false),
1004 visible_row_range,
1005 height,
1006 scroll_height,
1007 first_row_y_offset,
1008 row_height,
1009 visible: show_scrollbars,
1010 })
1011 }
1012
1013 #[allow(clippy::too_many_arguments)]
1014 fn layout_gutter_fold_indicators(
1015 &self,
1016 fold_statuses: Vec<Option<(FoldStatus, u32, bool)>>,
1017 line_height: Pixels,
1018 gutter_dimensions: &GutterDimensions,
1019 gutter_settings: crate::editor_settings::Gutter,
1020 scroll_pixel_position: gpui::Point<Pixels>,
1021 gutter_hitbox: &Hitbox,
1022 cx: &mut ElementContext,
1023 ) -> Vec<Option<AnyElement>> {
1024 let mut indicators = self.editor.update(cx, |editor, cx| {
1025 editor.render_fold_indicators(
1026 fold_statuses,
1027 &self.style,
1028 editor.gutter_hovered,
1029 line_height,
1030 gutter_dimensions.margin,
1031 cx,
1032 )
1033 });
1034
1035 for (ix, fold_indicator) in indicators.iter_mut().enumerate() {
1036 if let Some(fold_indicator) = fold_indicator {
1037 debug_assert!(gutter_settings.folds);
1038 let available_space = size(
1039 AvailableSpace::MinContent,
1040 AvailableSpace::Definite(line_height * 0.55),
1041 );
1042 let fold_indicator_size = fold_indicator.measure(available_space, cx);
1043
1044 let position = point(
1045 gutter_dimensions.width - gutter_dimensions.right_padding,
1046 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1047 );
1048 let centering_offset = point(
1049 (gutter_dimensions.right_padding + gutter_dimensions.margin
1050 - fold_indicator_size.width)
1051 / 2.,
1052 (line_height - fold_indicator_size.height) / 2.,
1053 );
1054 let origin = gutter_hitbox.origin + position + centering_offset;
1055 fold_indicator.layout(origin, available_space, cx);
1056 }
1057 }
1058
1059 indicators
1060 }
1061
1062 //Folds contained in a hunk are ignored apart from shrinking visual size
1063 //If a fold contains any hunks then that fold line is marked as modified
1064 fn layout_git_gutters(
1065 &self,
1066 display_rows: Range<u32>,
1067 snapshot: &EditorSnapshot,
1068 ) -> Vec<DisplayDiffHunk> {
1069 let buffer_snapshot = &snapshot.buffer_snapshot;
1070
1071 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1072 .to_point(snapshot)
1073 .row;
1074 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1075 .to_point(snapshot)
1076 .row;
1077
1078 buffer_snapshot
1079 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1080 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1081 .dedup()
1082 .collect()
1083 }
1084
1085 fn layout_code_actions_indicator(
1086 &self,
1087 line_height: Pixels,
1088 newest_selection_head: DisplayPoint,
1089 scroll_pixel_position: gpui::Point<Pixels>,
1090 gutter_dimensions: &GutterDimensions,
1091 gutter_hitbox: &Hitbox,
1092 cx: &mut ElementContext,
1093 ) -> Option<AnyElement> {
1094 let mut active = false;
1095 let mut button = None;
1096 self.editor.update(cx, |editor, cx| {
1097 active = matches!(
1098 editor.context_menu.read().as_ref(),
1099 Some(crate::ContextMenu::CodeActions(_))
1100 );
1101 button = editor.render_code_actions_indicator(&self.style, active, cx);
1102 });
1103
1104 let mut button = button?.into_any_element();
1105 let available_space = size(
1106 AvailableSpace::MinContent,
1107 AvailableSpace::Definite(line_height),
1108 );
1109 let indicator_size = button.measure(available_space, cx);
1110
1111 let mut x = Pixels::ZERO;
1112 let mut y = newest_selection_head.row() as f32 * line_height - scroll_pixel_position.y;
1113 // Center indicator.
1114 x +=
1115 (gutter_dimensions.margin + gutter_dimensions.left_padding - indicator_size.width) / 2.;
1116 y += (line_height - indicator_size.height) / 2.;
1117 button.layout(gutter_hitbox.origin + point(x, y), available_space, cx);
1118 Some(button)
1119 }
1120
1121 fn calculate_relative_line_numbers(
1122 &self,
1123 snapshot: &EditorSnapshot,
1124 rows: &Range<u32>,
1125 relative_to: Option<u32>,
1126 ) -> HashMap<u32, u32> {
1127 let mut relative_rows: HashMap<u32, u32> = Default::default();
1128 let Some(relative_to) = relative_to else {
1129 return relative_rows;
1130 };
1131
1132 let start = rows.start.min(relative_to);
1133 let end = rows.end.max(relative_to);
1134
1135 let buffer_rows = snapshot
1136 .buffer_rows(start)
1137 .take(1 + (end - start) as usize)
1138 .collect::<Vec<_>>();
1139
1140 let head_idx = relative_to - start;
1141 let mut delta = 1;
1142 let mut i = head_idx + 1;
1143 while i < buffer_rows.len() as u32 {
1144 if buffer_rows[i as usize].is_some() {
1145 if rows.contains(&(i + start)) {
1146 relative_rows.insert(i + start, delta);
1147 }
1148 delta += 1;
1149 }
1150 i += 1;
1151 }
1152 delta = 1;
1153 i = head_idx.min(buffer_rows.len() as u32 - 1);
1154 while i > 0 && buffer_rows[i as usize].is_none() {
1155 i -= 1;
1156 }
1157
1158 while i > 0 {
1159 i -= 1;
1160 if buffer_rows[i as usize].is_some() {
1161 if rows.contains(&(i + start)) {
1162 relative_rows.insert(i + start, delta);
1163 }
1164 delta += 1;
1165 }
1166 }
1167
1168 relative_rows
1169 }
1170
1171 fn layout_line_numbers(
1172 &self,
1173 rows: Range<u32>,
1174 active_rows: &BTreeMap<u32, bool>,
1175 newest_selection_head: Option<DisplayPoint>,
1176 snapshot: &EditorSnapshot,
1177 cx: &ElementContext,
1178 ) -> (
1179 Vec<Option<ShapedLine>>,
1180 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1181 ) {
1182 let editor = self.editor.read(cx);
1183 let is_singleton = editor.is_singleton(cx);
1184 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1185 let newest = editor.selections.newest::<Point>(cx);
1186 SelectionLayout::new(
1187 newest,
1188 editor.selections.line_mode,
1189 editor.cursor_shape,
1190 &snapshot.display_snapshot,
1191 true,
1192 true,
1193 None,
1194 )
1195 .head
1196 });
1197 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1198 let include_line_numbers =
1199 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full;
1200 let include_fold_statuses =
1201 EditorSettings::get_global(cx).gutter.folds && snapshot.mode == EditorMode::Full;
1202 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1203 let mut fold_statuses = Vec::with_capacity(rows.len());
1204 let mut line_number = String::new();
1205 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1206 let relative_to = if is_relative {
1207 Some(newest_selection_head.row())
1208 } else {
1209 None
1210 };
1211
1212 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1213
1214 for (ix, row) in snapshot
1215 .buffer_rows(rows.start)
1216 .take((rows.end - rows.start) as usize)
1217 .enumerate()
1218 {
1219 let display_row = rows.start + ix as u32;
1220 let (active, color) = if active_rows.contains_key(&display_row) {
1221 (true, cx.theme().colors().editor_active_line_number)
1222 } else {
1223 (false, cx.theme().colors().editor_line_number)
1224 };
1225 if let Some(buffer_row) = row {
1226 if include_line_numbers {
1227 line_number.clear();
1228 let default_number = buffer_row + 1;
1229 let number = relative_rows
1230 .get(&(ix as u32 + rows.start))
1231 .unwrap_or(&default_number);
1232 write!(&mut line_number, "{}", number).unwrap();
1233 let run = TextRun {
1234 len: line_number.len(),
1235 font: self.style.text.font(),
1236 color,
1237 background_color: None,
1238 underline: None,
1239 strikethrough: None,
1240 };
1241 let shaped_line = cx
1242 .text_system()
1243 .shape_line(line_number.clone().into(), font_size, &[run])
1244 .unwrap();
1245 shaped_line_numbers.push(Some(shaped_line));
1246 }
1247 if include_fold_statuses {
1248 fold_statuses.push(
1249 is_singleton
1250 .then(|| {
1251 snapshot
1252 .fold_for_line(buffer_row)
1253 .map(|fold_status| (fold_status, buffer_row, active))
1254 })
1255 .flatten(),
1256 )
1257 }
1258 } else {
1259 fold_statuses.push(None);
1260 shaped_line_numbers.push(None);
1261 }
1262 }
1263
1264 (shaped_line_numbers, fold_statuses)
1265 }
1266
1267 fn layout_lines(
1268 &self,
1269 rows: Range<u32>,
1270 line_number_layouts: &[Option<ShapedLine>],
1271 snapshot: &EditorSnapshot,
1272 cx: &ElementContext,
1273 ) -> Vec<LineWithInvisibles> {
1274 if rows.start >= rows.end {
1275 return Vec::new();
1276 }
1277
1278 // Show the placeholder when the editor is empty
1279 if snapshot.is_empty() {
1280 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1281 let placeholder_color = cx.theme().colors().text_placeholder;
1282 let placeholder_text = snapshot.placeholder_text();
1283
1284 let placeholder_lines = placeholder_text
1285 .as_ref()
1286 .map_or("", AsRef::as_ref)
1287 .split('\n')
1288 .skip(rows.start as usize)
1289 .chain(iter::repeat(""))
1290 .take(rows.len());
1291 placeholder_lines
1292 .filter_map(move |line| {
1293 let run = TextRun {
1294 len: line.len(),
1295 font: self.style.text.font(),
1296 color: placeholder_color,
1297 background_color: None,
1298 underline: Default::default(),
1299 strikethrough: None,
1300 };
1301 cx.text_system()
1302 .shape_line(line.to_string().into(), font_size, &[run])
1303 .log_err()
1304 })
1305 .map(|line| LineWithInvisibles {
1306 line,
1307 invisibles: Vec::new(),
1308 })
1309 .collect()
1310 } else {
1311 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1312 LineWithInvisibles::from_chunks(
1313 chunks,
1314 &self.style.text,
1315 MAX_LINE_LEN,
1316 rows.len(),
1317 line_number_layouts,
1318 snapshot.mode,
1319 cx,
1320 )
1321 }
1322 }
1323
1324 #[allow(clippy::too_many_arguments)]
1325 fn build_blocks(
1326 &self,
1327 rows: Range<u32>,
1328 snapshot: &EditorSnapshot,
1329 hitbox: &Hitbox,
1330 text_hitbox: &Hitbox,
1331 scroll_width: &mut Pixels,
1332 gutter_dimensions: &GutterDimensions,
1333 em_width: Pixels,
1334 text_x: Pixels,
1335 line_height: Pixels,
1336 line_layouts: &[LineWithInvisibles],
1337 cx: &mut ElementContext,
1338 ) -> Vec<BlockLayout> {
1339 let mut block_id = 0;
1340 let (fixed_blocks, non_fixed_blocks) = snapshot
1341 .blocks_in_range(rows.clone())
1342 .partition::<Vec<_>, _>(|(_, block)| match block {
1343 TransformBlock::ExcerptHeader { .. } => false,
1344 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1345 });
1346
1347 let render_block = |block: &TransformBlock,
1348 available_space: Size<AvailableSpace>,
1349 block_id: usize,
1350 cx: &mut ElementContext| {
1351 let mut element = match block {
1352 TransformBlock::Custom(block) => {
1353 let align_to = block
1354 .position()
1355 .to_point(&snapshot.buffer_snapshot)
1356 .to_display_point(snapshot);
1357 let anchor_x = text_x
1358 + if rows.contains(&align_to.row()) {
1359 line_layouts[(align_to.row() - rows.start) as usize]
1360 .line
1361 .x_for_index(align_to.column() as usize)
1362 } else {
1363 layout_line(align_to.row(), snapshot, &self.style, cx)
1364 .unwrap()
1365 .x_for_index(align_to.column() as usize)
1366 };
1367
1368 block.render(&mut BlockContext {
1369 context: cx,
1370 anchor_x,
1371 gutter_dimensions,
1372 line_height,
1373 em_width,
1374 block_id,
1375 max_width: text_hitbox.size.width.max(*scroll_width),
1376 editor_style: &self.style,
1377 })
1378 }
1379
1380 TransformBlock::ExcerptHeader {
1381 buffer,
1382 range,
1383 starts_new_buffer,
1384 ..
1385 } => {
1386 let include_root = self
1387 .editor
1388 .read(cx)
1389 .project
1390 .as_ref()
1391 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1392 .unwrap_or_default();
1393
1394 #[derive(Clone)]
1395 struct JumpData {
1396 position: Point,
1397 anchor: text::Anchor,
1398 path: ProjectPath,
1399 }
1400
1401 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
1402 let jump_path = ProjectPath {
1403 worktree_id: file.worktree_id(cx),
1404 path: file.path.clone(),
1405 };
1406 let jump_anchor = range
1407 .primary
1408 .as_ref()
1409 .map_or(range.context.start, |primary| primary.start);
1410 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
1411
1412 JumpData {
1413 position: jump_position,
1414 anchor: jump_anchor,
1415 path: jump_path,
1416 }
1417 });
1418
1419 let element = if *starts_new_buffer {
1420 let path = buffer.resolve_file_path(cx, include_root);
1421 let mut filename = None;
1422 let mut parent_path = None;
1423 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
1424 if let Some(path) = path {
1425 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
1426 parent_path = path
1427 .parent()
1428 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
1429 }
1430
1431 v_flex()
1432 .id(("path header container", block_id))
1433 .size_full()
1434 .justify_center()
1435 .p(gpui::px(6.))
1436 .child(
1437 h_flex()
1438 .id("path header block")
1439 .size_full()
1440 .pl(gpui::px(12.))
1441 .pr(gpui::px(8.))
1442 .rounded_md()
1443 .shadow_md()
1444 .border()
1445 .border_color(cx.theme().colors().border)
1446 .bg(cx.theme().colors().editor_subheader_background)
1447 .justify_between()
1448 .hover(|style| style.bg(cx.theme().colors().element_hover))
1449 .child(
1450 h_flex().gap_3().child(
1451 h_flex()
1452 .gap_2()
1453 .child(
1454 filename
1455 .map(SharedString::from)
1456 .unwrap_or_else(|| "untitled".into()),
1457 )
1458 .when_some(parent_path, |then, path| {
1459 then.child(
1460 div().child(path).text_color(
1461 cx.theme().colors().text_muted,
1462 ),
1463 )
1464 }),
1465 ),
1466 )
1467 .when_some(jump_data.clone(), |this, jump_data| {
1468 this.cursor_pointer()
1469 .tooltip(|cx| {
1470 Tooltip::for_action(
1471 "Jump to File",
1472 &OpenExcerpts,
1473 cx,
1474 )
1475 })
1476 .on_mouse_down(MouseButton::Left, |_, cx| {
1477 cx.stop_propagation()
1478 })
1479 .on_click(cx.listener_for(&self.editor, {
1480 move |editor, _, cx| {
1481 editor.jump(
1482 jump_data.path.clone(),
1483 jump_data.position,
1484 jump_data.anchor,
1485 cx,
1486 );
1487 }
1488 }))
1489 }),
1490 )
1491 } else {
1492 v_flex()
1493 .id(("collapsed context", block_id))
1494 .size_full()
1495 .child(
1496 div()
1497 .flex()
1498 .v_flex()
1499 .justify_start()
1500 .id("jump to collapsed context")
1501 .w(relative(1.0))
1502 .h_full()
1503 .child(
1504 div()
1505 .h_px()
1506 .w_full()
1507 .bg(cx.theme().colors().border_variant)
1508 .group_hover("excerpt-jump-action", |style| {
1509 style.bg(cx.theme().colors().border)
1510 }),
1511 ),
1512 )
1513 .child(
1514 h_flex()
1515 .justify_end()
1516 .flex_none()
1517 .w(
1518 gutter_dimensions.width - (gutter_dimensions.left_padding), // + gutter_dimensions.right_padding)
1519 )
1520 .h_full()
1521 .child(
1522 ButtonLike::new("jump-icon")
1523 .style(ButtonStyle::Transparent)
1524 .child(
1525 svg()
1526 .path(IconName::ArrowUpRight.path())
1527 .size(IconSize::XSmall.rems())
1528 .text_color(cx.theme().colors().border)
1529 .group_hover("excerpt-jump-action", |style| {
1530 style.text_color(
1531 cx.theme().colors().editor_line_number,
1532 )
1533 }),
1534 )
1535 .when_some(jump_data.clone(), |this, jump_data| {
1536 this.on_click(cx.listener_for(&self.editor, {
1537 let path = jump_data.path.clone();
1538 move |editor, _, cx| {
1539 editor.jump(
1540 path.clone(),
1541 jump_data.position,
1542 jump_data.anchor,
1543 cx,
1544 );
1545 }
1546 }))
1547 .tooltip({
1548 move |cx| {
1549 Tooltip::for_action(
1550 format!(
1551 "Jump to {}:L{}",
1552 jump_data.path.path.display(),
1553 jump_data.position.row + 1
1554 ),
1555 &OpenExcerpts,
1556 cx,
1557 )
1558 }
1559 })
1560 }),
1561 ),
1562 )
1563 .group("excerpt-jump-action")
1564 .cursor_pointer()
1565 .when_some(jump_data.clone(), |this, jump_data| {
1566 this.on_click(cx.listener_for(&self.editor, {
1567 let path = jump_data.path.clone();
1568 move |editor, _, cx| {
1569 cx.stop_propagation();
1570
1571 editor.jump(
1572 path.clone(),
1573 jump_data.position,
1574 jump_data.anchor,
1575 cx,
1576 );
1577 }
1578 }))
1579 .tooltip(move |cx| {
1580 Tooltip::for_action(
1581 format!(
1582 "Jump to {}:L{}",
1583 jump_data.path.path.display(),
1584 jump_data.position.row + 1
1585 ),
1586 &OpenExcerpts,
1587 cx,
1588 )
1589 })
1590 })
1591 };
1592 element.into_any()
1593 }
1594 };
1595
1596 let size = element.measure(available_space, cx);
1597 (element, size)
1598 };
1599
1600 let mut fixed_block_max_width = Pixels::ZERO;
1601 let mut blocks = Vec::new();
1602 for (row, block) in fixed_blocks {
1603 let available_space = size(
1604 AvailableSpace::MinContent,
1605 AvailableSpace::Definite(block.height() as f32 * line_height),
1606 );
1607 let (element, element_size) = render_block(block, available_space, block_id, cx);
1608 block_id += 1;
1609 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
1610 blocks.push(BlockLayout {
1611 row,
1612 element,
1613 available_space,
1614 style: BlockStyle::Fixed,
1615 });
1616 }
1617 for (row, block) in non_fixed_blocks {
1618 let style = match block {
1619 TransformBlock::Custom(block) => block.style(),
1620 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
1621 };
1622 let width = match style {
1623 BlockStyle::Sticky => hitbox.size.width,
1624 BlockStyle::Flex => hitbox
1625 .size
1626 .width
1627 .max(fixed_block_max_width)
1628 .max(gutter_dimensions.width + *scroll_width),
1629 BlockStyle::Fixed => unreachable!(),
1630 };
1631 let available_space = size(
1632 AvailableSpace::Definite(width),
1633 AvailableSpace::Definite(block.height() as f32 * line_height),
1634 );
1635 let (element, _) = render_block(block, available_space, block_id, cx);
1636 block_id += 1;
1637 blocks.push(BlockLayout {
1638 row,
1639 element,
1640 available_space,
1641 style,
1642 });
1643 }
1644
1645 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
1646 blocks
1647 }
1648
1649 fn layout_blocks(
1650 &self,
1651 blocks: &mut Vec<BlockLayout>,
1652 hitbox: &Hitbox,
1653 line_height: Pixels,
1654 scroll_pixel_position: gpui::Point<Pixels>,
1655 cx: &mut ElementContext,
1656 ) {
1657 for block in blocks {
1658 let mut origin = hitbox.origin
1659 + point(
1660 Pixels::ZERO,
1661 block.row as f32 * line_height - scroll_pixel_position.y,
1662 );
1663 if !matches!(block.style, BlockStyle::Sticky) {
1664 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
1665 }
1666 block.element.layout(origin, block.available_space, cx);
1667 }
1668 }
1669
1670 #[allow(clippy::too_many_arguments)]
1671 fn layout_context_menu(
1672 &self,
1673 line_height: Pixels,
1674 hitbox: &Hitbox,
1675 text_hitbox: &Hitbox,
1676 content_origin: gpui::Point<Pixels>,
1677 start_row: u32,
1678 scroll_pixel_position: gpui::Point<Pixels>,
1679 line_layouts: &[LineWithInvisibles],
1680 newest_selection_head: DisplayPoint,
1681 cx: &mut ElementContext,
1682 ) -> bool {
1683 let max_height = cmp::min(
1684 12. * line_height,
1685 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
1686 );
1687 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
1688 if editor.context_menu_visible() {
1689 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
1690 } else {
1691 None
1692 }
1693 }) else {
1694 return false;
1695 };
1696
1697 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1698 let context_menu_size = context_menu.measure(available_space, cx);
1699
1700 let cursor_row_layout = &line_layouts[(position.row() - start_row) as usize].line;
1701 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1702 let y = (position.row() + 1) as f32 * line_height - scroll_pixel_position.y;
1703 let mut list_origin = content_origin + point(x, y);
1704 let list_width = context_menu_size.width;
1705 let list_height = context_menu_size.height;
1706
1707 // Snap the right edge of the list to the right edge of the window if
1708 // its horizontal bounds overflow.
1709 if list_origin.x + list_width > cx.viewport_size().width {
1710 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1711 }
1712
1713 if list_origin.y + list_height > text_hitbox.lower_right().y {
1714 list_origin.y -= line_height + list_height;
1715 }
1716
1717 cx.defer_draw(context_menu, list_origin, 1);
1718 true
1719 }
1720
1721 fn layout_mouse_context_menu(&self, cx: &mut ElementContext) -> Option<AnyElement> {
1722 let mouse_context_menu = self.editor.read(cx).mouse_context_menu.as_ref()?;
1723 let mut element = overlay()
1724 .position(mouse_context_menu.position)
1725 .child(mouse_context_menu.context_menu.clone())
1726 .anchor(AnchorCorner::TopLeft)
1727 .snap_to_window()
1728 .into_any();
1729 element.layout(gpui::Point::default(), AvailableSpace::min_size(), cx);
1730 Some(element)
1731 }
1732
1733 #[allow(clippy::too_many_arguments)]
1734 fn layout_hover_popovers(
1735 &self,
1736 snapshot: &EditorSnapshot,
1737 hitbox: &Hitbox,
1738 text_hitbox: &Hitbox,
1739 visible_display_row_range: Range<u32>,
1740 content_origin: gpui::Point<Pixels>,
1741 scroll_pixel_position: gpui::Point<Pixels>,
1742 line_layouts: &[LineWithInvisibles],
1743 line_height: Pixels,
1744 em_width: Pixels,
1745 cx: &mut ElementContext,
1746 ) {
1747 struct MeasuredHoverPopover {
1748 element: AnyElement,
1749 size: Size<Pixels>,
1750 horizontal_offset: Pixels,
1751 }
1752
1753 let max_size = size(
1754 (120. * em_width) // Default size
1755 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
1756 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1757 (16. * line_height) // Default size
1758 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
1759 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1760 );
1761
1762 let hover_popovers = self.editor.update(cx, |editor, cx| {
1763 editor.hover_state.render(
1764 &snapshot,
1765 &self.style,
1766 visible_display_row_range.clone(),
1767 max_size,
1768 editor.workspace.as_ref().map(|(w, _)| w.clone()),
1769 cx,
1770 )
1771 });
1772 let Some((position, hover_popovers)) = hover_popovers else {
1773 return;
1774 };
1775
1776 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1777
1778 // This is safe because we check on layout whether the required row is available
1779 let hovered_row_layout =
1780 &line_layouts[(position.row() - visible_display_row_range.start) as usize].line;
1781
1782 // Compute Hovered Point
1783 let x =
1784 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1785 let y = position.row() as f32 * line_height - scroll_pixel_position.y;
1786 let hovered_point = content_origin + point(x, y);
1787
1788 let mut overall_height = Pixels::ZERO;
1789 let mut measured_hover_popovers = Vec::new();
1790 for mut hover_popover in hover_popovers {
1791 let size = hover_popover.measure(available_space, cx);
1792 let horizontal_offset =
1793 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
1794
1795 overall_height += HOVER_POPOVER_GAP + size.height;
1796
1797 measured_hover_popovers.push(MeasuredHoverPopover {
1798 element: hover_popover,
1799 size,
1800 horizontal_offset,
1801 });
1802 }
1803 overall_height += HOVER_POPOVER_GAP;
1804
1805 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
1806 let mut occlusion = div()
1807 .size_full()
1808 .occlude()
1809 .on_mouse_move(|_, cx| cx.stop_propagation())
1810 .into_any_element();
1811 occlusion.measure(size(width, HOVER_POPOVER_GAP).into(), cx);
1812 cx.defer_draw(occlusion, origin, 2);
1813 }
1814
1815 if hovered_point.y > overall_height {
1816 // There is enough space above. Render popovers above the hovered point
1817 let mut current_y = hovered_point.y;
1818 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
1819 let size = popover.size;
1820 let popover_origin = point(
1821 hovered_point.x + popover.horizontal_offset,
1822 current_y - size.height,
1823 );
1824
1825 cx.defer_draw(popover.element, popover_origin, 2);
1826 if position != itertools::Position::Last {
1827 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
1828 draw_occluder(size.width, origin, cx);
1829 }
1830
1831 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1832 }
1833 } else {
1834 // There is not enough space above. Render popovers below the hovered point
1835 let mut current_y = hovered_point.y + line_height;
1836 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
1837 let size = popover.size;
1838 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
1839
1840 cx.defer_draw(popover.element, popover_origin, 2);
1841 if position != itertools::Position::Last {
1842 let origin = point(popover_origin.x, popover_origin.y + size.height);
1843 draw_occluder(size.width, origin, cx);
1844 }
1845
1846 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1847 }
1848 }
1849 }
1850
1851 fn paint_background(&self, layout: &EditorLayout, cx: &mut ElementContext) {
1852 cx.paint_layer(layout.hitbox.bounds, |cx| {
1853 let scroll_top = layout.position_map.snapshot.scroll_position().y;
1854 let gutter_bg = cx.theme().colors().editor_gutter_background;
1855 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
1856 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
1857
1858 if let EditorMode::Full = layout.mode {
1859 let mut active_rows = layout.active_rows.iter().peekable();
1860 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
1861 let mut end_row = *start_row;
1862 while active_rows.peek().map_or(false, |r| {
1863 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
1864 }) {
1865 active_rows.next().unwrap();
1866 end_row += 1;
1867 }
1868
1869 if !contains_non_empty_selection {
1870 let origin = point(
1871 layout.hitbox.origin.x,
1872 layout.hitbox.origin.y
1873 + (*start_row as f32 - scroll_top)
1874 * layout.position_map.line_height,
1875 );
1876 let size = size(
1877 layout.hitbox.size.width,
1878 layout.position_map.line_height * (end_row - start_row + 1) as f32,
1879 );
1880 let active_line_bg = cx.theme().colors().editor_active_line_background;
1881 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
1882 }
1883 }
1884
1885 let mut paint_highlight =
1886 |highlight_row_start: u32, highlight_row_end: u32, color| {
1887 let origin = point(
1888 layout.hitbox.origin.x,
1889 layout.hitbox.origin.y
1890 + (highlight_row_start as f32 - scroll_top)
1891 * layout.position_map.line_height,
1892 );
1893 let size = size(
1894 layout.hitbox.size.width,
1895 layout.position_map.line_height
1896 * (highlight_row_end + 1 - highlight_row_start) as f32,
1897 );
1898 cx.paint_quad(fill(Bounds { origin, size }, color));
1899 };
1900
1901 let mut last_row = None;
1902 let mut highlight_row_start = 0u32;
1903 let mut highlight_row_end = 0u32;
1904 for (&row, &color) in &layout.highlighted_rows {
1905 let paint = last_row.map_or(false, |(last_row, last_color)| {
1906 last_color != color || last_row + 1 < row
1907 });
1908
1909 if paint {
1910 let paint_range_is_unfinished = highlight_row_end == 0;
1911 if paint_range_is_unfinished {
1912 highlight_row_end = row;
1913 last_row = None;
1914 }
1915 paint_highlight(highlight_row_start, highlight_row_end, color);
1916 highlight_row_start = 0;
1917 highlight_row_end = 0;
1918 if !paint_range_is_unfinished {
1919 highlight_row_start = row;
1920 last_row = Some((row, color));
1921 }
1922 } else {
1923 if last_row.is_none() {
1924 highlight_row_start = row;
1925 } else {
1926 highlight_row_end = row;
1927 }
1928 last_row = Some((row, color));
1929 }
1930 }
1931 if let Some((row, hsla)) = last_row {
1932 highlight_row_end = row;
1933 paint_highlight(highlight_row_start, highlight_row_end, hsla);
1934 }
1935
1936 let scroll_left =
1937 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
1938
1939 for (wrap_position, active) in layout.wrap_guides.iter() {
1940 let x = (layout.text_hitbox.origin.x
1941 + *wrap_position
1942 + layout.position_map.em_width / 2.)
1943 - scroll_left;
1944
1945 let show_scrollbars = layout
1946 .scrollbar_layout
1947 .as_ref()
1948 .map_or(false, |scrollbar| scrollbar.visible);
1949 if x < layout.text_hitbox.origin.x
1950 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
1951 {
1952 continue;
1953 }
1954
1955 let color = if *active {
1956 cx.theme().colors().editor_active_wrap_guide
1957 } else {
1958 cx.theme().colors().editor_wrap_guide
1959 };
1960 cx.paint_quad(fill(
1961 Bounds {
1962 origin: point(x, layout.text_hitbox.origin.y),
1963 size: size(px(1.), layout.text_hitbox.size.height),
1964 },
1965 color,
1966 ));
1967 }
1968 }
1969 })
1970 }
1971
1972 fn paint_gutter(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
1973 let line_height = layout.position_map.line_height;
1974
1975 let scroll_position = layout.position_map.snapshot.scroll_position();
1976 let scroll_top = scroll_position.y * line_height;
1977
1978 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
1979
1980 let show_git_gutter = matches!(
1981 ProjectSettings::get_global(cx).git.git_gutter,
1982 Some(GitGutterSetting::TrackedFiles)
1983 );
1984
1985 if show_git_gutter {
1986 Self::paint_diff_hunks(layout, cx);
1987 }
1988
1989 for (ix, line) in layout.line_numbers.iter().enumerate() {
1990 if let Some(line) = line {
1991 let line_origin = layout.gutter_hitbox.origin
1992 + point(
1993 layout.gutter_hitbox.size.width
1994 - line.width
1995 - layout.gutter_dimensions.right_padding,
1996 ix as f32 * line_height - (scroll_top % line_height),
1997 );
1998
1999 line.paint(line_origin, line_height, cx).log_err();
2000 }
2001 }
2002
2003 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2004 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2005 for fold_indicator in layout.fold_indicators.iter_mut().flatten() {
2006 fold_indicator.paint(cx);
2007 }
2008 });
2009
2010 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
2011 indicator.paint(cx);
2012 }
2013 })
2014 }
2015
2016 fn paint_diff_hunks(layout: &EditorLayout, cx: &mut ElementContext) {
2017 if layout.display_hunks.is_empty() {
2018 return;
2019 }
2020
2021 let line_height = layout.position_map.line_height;
2022
2023 let scroll_position = layout.position_map.snapshot.scroll_position();
2024 let scroll_top = scroll_position.y * line_height;
2025
2026 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2027 for hunk in &layout.display_hunks {
2028 let (display_row_range, status) = match hunk {
2029 //TODO: This rendering is entirely a horrible hack
2030 &DisplayDiffHunk::Folded { display_row: row } => {
2031 let start_y = row as f32 * line_height - scroll_top;
2032 let end_y = start_y + line_height;
2033
2034 let width = 0.275 * line_height;
2035 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2036 let highlight_size = size(width * 2., end_y - start_y);
2037 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2038 cx.paint_quad(quad(
2039 highlight_bounds,
2040 Corners::all(1. * line_height),
2041 cx.theme().status().modified,
2042 Edges::default(),
2043 transparent_black(),
2044 ));
2045
2046 continue;
2047 }
2048
2049 DisplayDiffHunk::Unfolded {
2050 display_row_range,
2051 status,
2052 } => (display_row_range, status),
2053 };
2054
2055 let color = match status {
2056 DiffHunkStatus::Added => cx.theme().status().created,
2057 DiffHunkStatus::Modified => cx.theme().status().modified,
2058
2059 //TODO: This rendering is entirely a horrible hack
2060 DiffHunkStatus::Removed => {
2061 let row = display_row_range.start;
2062
2063 let offset = line_height / 2.;
2064 let start_y = row as f32 * line_height - offset - scroll_top;
2065 let end_y = start_y + line_height;
2066
2067 let width = 0.275 * line_height;
2068 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2069 let highlight_size = size(width * 2., end_y - start_y);
2070 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2071 cx.paint_quad(quad(
2072 highlight_bounds,
2073 Corners::all(1. * line_height),
2074 cx.theme().status().deleted,
2075 Edges::default(),
2076 transparent_black(),
2077 ));
2078
2079 continue;
2080 }
2081 };
2082
2083 let start_row = display_row_range.start;
2084 let end_row = display_row_range.end;
2085 // If we're in a multibuffer, row range span might include an
2086 // excerpt header, so if we were to draw the marker straight away,
2087 // the hunk might include the rows of that header.
2088 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
2089 // Instead, we simply check whether the range we're dealing with includes
2090 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
2091 let end_row_in_current_excerpt = layout
2092 .position_map
2093 .snapshot
2094 .blocks_in_range(start_row..end_row)
2095 .find_map(|(start_row, block)| {
2096 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
2097 Some(start_row)
2098 } else {
2099 None
2100 }
2101 })
2102 .unwrap_or(end_row);
2103
2104 let start_y = start_row as f32 * line_height - scroll_top;
2105 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
2106
2107 let width = 0.275 * line_height;
2108 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2109 let highlight_size = size(width * 2., end_y - start_y);
2110 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2111 cx.paint_quad(quad(
2112 highlight_bounds,
2113 Corners::all(0.05 * line_height),
2114 color,
2115 Edges::default(),
2116 transparent_black(),
2117 ));
2118 }
2119 })
2120 }
2121
2122 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2123 cx.with_content_mask(
2124 Some(ContentMask {
2125 bounds: layout.text_hitbox.bounds,
2126 }),
2127 |cx| {
2128 let cursor_style = if self
2129 .editor
2130 .read(cx)
2131 .hovered_link_state
2132 .as_ref()
2133 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
2134 {
2135 CursorStyle::PointingHand
2136 } else {
2137 CursorStyle::IBeam
2138 };
2139 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
2140
2141 cx.with_element_id(Some("folds"), |cx| self.paint_folds(layout, cx));
2142 let invisible_display_ranges = self.paint_highlights(layout, cx);
2143 self.paint_lines(&invisible_display_ranges, layout, cx);
2144 self.paint_redactions(layout, cx);
2145 self.paint_cursors(layout, cx);
2146 },
2147 )
2148 }
2149
2150 fn paint_highlights(
2151 &mut self,
2152 layout: &mut EditorLayout,
2153 cx: &mut ElementContext,
2154 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
2155 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2156 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
2157 let line_end_overshoot = 0.15 * layout.position_map.line_height;
2158 for (range, color) in &layout.highlighted_ranges {
2159 self.paint_highlighted_range(
2160 range.clone(),
2161 *color,
2162 Pixels::ZERO,
2163 line_end_overshoot,
2164 layout,
2165 cx,
2166 );
2167 }
2168
2169 let corner_radius = 0.15 * layout.position_map.line_height;
2170
2171 for (player_color, selections) in &layout.selections {
2172 for selection in selections.into_iter() {
2173 self.paint_highlighted_range(
2174 selection.range.clone(),
2175 player_color.selection,
2176 corner_radius,
2177 corner_radius * 2.,
2178 layout,
2179 cx,
2180 );
2181
2182 if selection.is_local && !selection.range.is_empty() {
2183 invisible_display_ranges.push(selection.range.clone());
2184 }
2185 }
2186 }
2187 invisible_display_ranges
2188 })
2189 }
2190
2191 fn paint_lines(
2192 &mut self,
2193 invisible_display_ranges: &[Range<DisplayPoint>],
2194 layout: &EditorLayout,
2195 cx: &mut ElementContext,
2196 ) {
2197 let whitespace_setting = self
2198 .editor
2199 .read(cx)
2200 .buffer
2201 .read(cx)
2202 .settings_at(0, cx)
2203 .show_whitespaces;
2204
2205 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
2206 let row = layout.visible_display_row_range.start + ix as u32;
2207 line_with_invisibles.draw(
2208 layout,
2209 row,
2210 layout.content_origin,
2211 whitespace_setting,
2212 invisible_display_ranges,
2213 cx,
2214 )
2215 }
2216 }
2217
2218 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2219 if layout.redacted_ranges.is_empty() {
2220 return;
2221 }
2222
2223 let line_end_overshoot = layout.line_end_overshoot();
2224
2225 // A softer than perfect black
2226 let redaction_color = gpui::rgb(0x0e1111);
2227
2228 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2229 for range in layout.redacted_ranges.iter() {
2230 self.paint_highlighted_range(
2231 range.clone(),
2232 redaction_color.into(),
2233 Pixels::ZERO,
2234 line_end_overshoot,
2235 layout,
2236 cx,
2237 );
2238 }
2239 });
2240 }
2241
2242 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2243 for cursor in &mut layout.cursors {
2244 cursor.paint(layout.content_origin, cx);
2245 }
2246 }
2247
2248 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2249 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
2250 return;
2251 };
2252
2253 let thumb_bounds = scrollbar_layout.thumb_bounds();
2254 if scrollbar_layout.visible {
2255 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
2256 cx.paint_quad(quad(
2257 scrollbar_layout.hitbox.bounds,
2258 Corners::default(),
2259 cx.theme().colors().scrollbar_track_background,
2260 Edges {
2261 top: Pixels::ZERO,
2262 right: Pixels::ZERO,
2263 bottom: Pixels::ZERO,
2264 left: ScrollbarLayout::BORDER_WIDTH,
2265 },
2266 cx.theme().colors().scrollbar_track_border,
2267 ));
2268 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2269 let is_singleton = self.editor.read(cx).is_singleton(cx);
2270 let left = scrollbar_layout.hitbox.left();
2271 let right = scrollbar_layout.hitbox.right();
2272 let column_width =
2273 px(((right - left - ScrollbarLayout::BORDER_WIDTH).0 / 3.0).floor());
2274 if is_singleton && scrollbar_settings.selections {
2275 let start_anchor = Anchor::min();
2276 let end_anchor = Anchor::max();
2277 let background_ranges = self
2278 .editor
2279 .read(cx)
2280 .background_highlight_row_ranges::<BufferSearchHighlights>(
2281 start_anchor..end_anchor,
2282 &layout.position_map.snapshot,
2283 50000,
2284 );
2285 let left_x = left + ScrollbarLayout::BORDER_WIDTH + column_width;
2286 let right_x = left_x + column_width;
2287 for range in background_ranges {
2288 let (start_y, end_y) =
2289 scrollbar_layout.ys_for_marker(range.start().row(), range.end().row());
2290 let bounds =
2291 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2292 cx.paint_quad(quad(
2293 bounds,
2294 Corners::default(),
2295 cx.theme().status().info,
2296 Edges::default(),
2297 cx.theme().colors().scrollbar_thumb_border,
2298 ));
2299 }
2300 }
2301
2302 if is_singleton && scrollbar_settings.symbols_selections {
2303 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
2304 Anchor::min()..Anchor::max(),
2305 &layout.position_map.snapshot,
2306 cx.theme().colors(),
2307 );
2308 let left_x = left + ScrollbarLayout::BORDER_WIDTH + column_width;
2309 let right_x = left_x + column_width;
2310 for hunk in selection_ranges {
2311 let start_display = Point::new(hunk.0.start.row(), 0)
2312 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2313 let end_display = Point::new(hunk.0.end.row(), 0)
2314 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2315 let (start_y, end_y) =
2316 scrollbar_layout.ys_for_marker(start_display.row(), end_display.row());
2317 let bounds =
2318 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2319 cx.paint_quad(quad(
2320 bounds,
2321 Corners::default(),
2322 cx.theme().status().info,
2323 Edges::default(),
2324 cx.theme().colors().scrollbar_thumb_border,
2325 ));
2326 }
2327 }
2328
2329 if is_singleton && scrollbar_settings.git_diff {
2330 let left_x = left + ScrollbarLayout::BORDER_WIDTH;
2331 let right_x = left_x + column_width;
2332 for hunk in layout
2333 .position_map
2334 .snapshot
2335 .buffer_snapshot
2336 .git_diff_hunks_in_range(0..layout.max_row)
2337 {
2338 let start_display_row = Point::new(hunk.associated_range.start, 0)
2339 .to_display_point(&layout.position_map.snapshot.display_snapshot)
2340 .row();
2341 let mut end_display_row = Point::new(hunk.associated_range.end, 0)
2342 .to_display_point(&layout.position_map.snapshot.display_snapshot)
2343 .row();
2344 if end_display_row != start_display_row {
2345 end_display_row -= 1;
2346 }
2347 let (start_y, end_y) =
2348 scrollbar_layout.ys_for_marker(start_display_row, end_display_row);
2349 let bounds =
2350 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2351 let color = match hunk.status() {
2352 DiffHunkStatus::Added => cx.theme().status().created,
2353 DiffHunkStatus::Modified => cx.theme().status().modified,
2354 DiffHunkStatus::Removed => cx.theme().status().deleted,
2355 };
2356 cx.paint_quad(quad(
2357 bounds,
2358 Corners::default(),
2359 color,
2360 Edges::default(),
2361 cx.theme().colors().scrollbar_thumb_border,
2362 ));
2363 }
2364 }
2365
2366 if is_singleton && scrollbar_settings.diagnostics {
2367 let max_point = layout
2368 .position_map
2369 .snapshot
2370 .display_snapshot
2371 .buffer_snapshot
2372 .max_point();
2373
2374 let diagnostics = layout
2375 .position_map
2376 .snapshot
2377 .buffer_snapshot
2378 .diagnostics_in_range::<_, Point>(Point::zero()..max_point, false)
2379 // We want to sort by severity, in order to paint the most severe diagnostics last.
2380 .sorted_by_key(|diagnostic| {
2381 std::cmp::Reverse(diagnostic.diagnostic.severity)
2382 });
2383
2384 let left_x = left + ScrollbarLayout::BORDER_WIDTH + 2.0 * column_width;
2385 for diagnostic in diagnostics {
2386 let start_display = diagnostic
2387 .range
2388 .start
2389 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2390 let end_display = diagnostic
2391 .range
2392 .end
2393 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2394 let (start_y, end_y) =
2395 scrollbar_layout.ys_for_marker(start_display.row(), end_display.row());
2396 let bounds =
2397 Bounds::from_corners(point(left_x, start_y), point(right, end_y));
2398 let color = match diagnostic.diagnostic.severity {
2399 DiagnosticSeverity::ERROR => cx.theme().status().error,
2400 DiagnosticSeverity::WARNING => cx.theme().status().warning,
2401 DiagnosticSeverity::INFORMATION => cx.theme().status().info,
2402 _ => cx.theme().status().hint,
2403 };
2404 cx.paint_quad(quad(
2405 bounds,
2406 Corners::default(),
2407 color,
2408 Edges::default(),
2409 cx.theme().colors().scrollbar_thumb_border,
2410 ));
2411 }
2412 }
2413
2414 cx.paint_quad(quad(
2415 thumb_bounds,
2416 Corners::default(),
2417 cx.theme().colors().scrollbar_thumb_background,
2418 Edges {
2419 top: Pixels::ZERO,
2420 right: Pixels::ZERO,
2421 bottom: Pixels::ZERO,
2422 left: ScrollbarLayout::BORDER_WIDTH,
2423 },
2424 cx.theme().colors().scrollbar_thumb_border,
2425 ));
2426 });
2427 }
2428
2429 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
2430
2431 let scroll_height = scrollbar_layout.scroll_height;
2432 let height = scrollbar_layout.height;
2433 let row_range = scrollbar_layout.visible_row_range.clone();
2434
2435 cx.on_mouse_event({
2436 let editor = self.editor.clone();
2437 let hitbox = scrollbar_layout.hitbox.clone();
2438 let mut mouse_position = cx.mouse_position();
2439 move |event: &MouseMoveEvent, phase, cx| {
2440 if phase == DispatchPhase::Capture {
2441 return;
2442 }
2443
2444 editor.update(cx, |editor, cx| {
2445 if event.pressed_button == Some(MouseButton::Left)
2446 && editor.scroll_manager.is_dragging_scrollbar()
2447 {
2448 let y = mouse_position.y;
2449 let new_y = event.position.y;
2450 if (hitbox.top()..hitbox.bottom()).contains(&y) {
2451 let mut position = editor.scroll_position(cx);
2452 position.y += (new_y - y) * scroll_height / height;
2453 if position.y < 0.0 {
2454 position.y = 0.0;
2455 }
2456 editor.set_scroll_position(position, cx);
2457 }
2458
2459 mouse_position = event.position;
2460 cx.stop_propagation();
2461 } else {
2462 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2463 if hitbox.is_hovered(cx) {
2464 editor.scroll_manager.show_scrollbar(cx);
2465 }
2466 }
2467 })
2468 }
2469 });
2470
2471 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
2472 cx.on_mouse_event({
2473 let editor = self.editor.clone();
2474 move |_: &MouseUpEvent, phase, cx| {
2475 if phase == DispatchPhase::Capture {
2476 return;
2477 }
2478
2479 editor.update(cx, |editor, cx| {
2480 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2481 cx.stop_propagation();
2482 });
2483 }
2484 });
2485 } else {
2486 cx.on_mouse_event({
2487 let editor = self.editor.clone();
2488 let hitbox = scrollbar_layout.hitbox.clone();
2489 move |event: &MouseDownEvent, phase, cx| {
2490 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
2491 return;
2492 }
2493
2494 editor.update(cx, |editor, cx| {
2495 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
2496
2497 let y = event.position.y;
2498 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
2499 let center_row =
2500 ((y - hitbox.top()) * scroll_height / height).round() as u32;
2501 let top_row = center_row
2502 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
2503 let mut position = editor.scroll_position(cx);
2504 position.y = top_row as f32;
2505 editor.set_scroll_position(position, cx);
2506 } else {
2507 editor.scroll_manager.show_scrollbar(cx);
2508 }
2509
2510 cx.stop_propagation();
2511 });
2512 }
2513 });
2514 }
2515 }
2516
2517 #[allow(clippy::too_many_arguments)]
2518 fn paint_highlighted_range(
2519 &self,
2520 range: Range<DisplayPoint>,
2521 color: Hsla,
2522 corner_radius: Pixels,
2523 line_end_overshoot: Pixels,
2524 layout: &EditorLayout,
2525 cx: &mut ElementContext,
2526 ) {
2527 let start_row = layout.visible_display_row_range.start;
2528 let end_row = layout.visible_display_row_range.end;
2529 if range.start != range.end {
2530 let row_range = if range.end.column() == 0 {
2531 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
2532 } else {
2533 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
2534 };
2535
2536 let highlighted_range = HighlightedRange {
2537 color,
2538 line_height: layout.position_map.line_height,
2539 corner_radius,
2540 start_y: layout.content_origin.y
2541 + row_range.start as f32 * layout.position_map.line_height
2542 - layout.position_map.scroll_pixel_position.y,
2543 lines: row_range
2544 .into_iter()
2545 .map(|row| {
2546 let line_layout =
2547 &layout.position_map.line_layouts[(row - start_row) as usize].line;
2548 HighlightedRangeLine {
2549 start_x: if row == range.start.row() {
2550 layout.content_origin.x
2551 + line_layout.x_for_index(range.start.column() as usize)
2552 - layout.position_map.scroll_pixel_position.x
2553 } else {
2554 layout.content_origin.x
2555 - layout.position_map.scroll_pixel_position.x
2556 },
2557 end_x: if row == range.end.row() {
2558 layout.content_origin.x
2559 + line_layout.x_for_index(range.end.column() as usize)
2560 - layout.position_map.scroll_pixel_position.x
2561 } else {
2562 layout.content_origin.x + line_layout.width + line_end_overshoot
2563 - layout.position_map.scroll_pixel_position.x
2564 },
2565 }
2566 })
2567 .collect(),
2568 };
2569
2570 highlighted_range.paint(layout.text_hitbox.bounds, cx);
2571 }
2572 }
2573
2574 fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2575 if layout.folds.is_empty() {
2576 return;
2577 }
2578
2579 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2580 let fold_corner_radius = 0.15 * layout.position_map.line_height;
2581 for mut fold in mem::take(&mut layout.folds) {
2582 fold.hover_element.paint(cx);
2583
2584 let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
2585 let fold_background = if hover_element.interactivity().active.unwrap() {
2586 cx.theme().colors().ghost_element_active
2587 } else if hover_element.interactivity().hovered.unwrap() {
2588 cx.theme().colors().ghost_element_hover
2589 } else {
2590 cx.theme().colors().ghost_element_background
2591 };
2592
2593 self.paint_highlighted_range(
2594 fold.display_range.clone(),
2595 fold_background,
2596 fold_corner_radius,
2597 fold_corner_radius * 2.,
2598 layout,
2599 cx,
2600 );
2601 }
2602 })
2603 }
2604
2605 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2606 for mut block in layout.blocks.drain(..) {
2607 block.element.paint(cx);
2608 }
2609 }
2610
2611 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2612 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
2613 mouse_context_menu.paint(cx);
2614 }
2615 }
2616
2617 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2618 cx.on_mouse_event({
2619 let position_map = layout.position_map.clone();
2620 let editor = self.editor.clone();
2621 let hitbox = layout.hitbox.clone();
2622 let mut delta = ScrollDelta::default();
2623
2624 move |event: &ScrollWheelEvent, phase, cx| {
2625 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
2626 delta = delta.coalesce(event.delta);
2627 editor.update(cx, |editor, cx| {
2628 let position_map: &PositionMap = &position_map;
2629
2630 let line_height = position_map.line_height;
2631 let max_glyph_width = position_map.em_width;
2632 let (delta, axis) = match delta {
2633 gpui::ScrollDelta::Pixels(mut pixels) => {
2634 //Trackpad
2635 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2636 (pixels, axis)
2637 }
2638
2639 gpui::ScrollDelta::Lines(lines) => {
2640 //Not trackpad
2641 let pixels =
2642 point(lines.x * max_glyph_width, lines.y * line_height);
2643 (pixels, None)
2644 }
2645 };
2646
2647 let scroll_position = position_map.snapshot.scroll_position();
2648 let x = (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width;
2649 let y = (scroll_position.y * line_height - delta.y) / line_height;
2650 let scroll_position =
2651 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2652 editor.scroll(scroll_position, axis, cx);
2653 cx.stop_propagation();
2654 });
2655 }
2656 }
2657 });
2658 }
2659
2660 fn paint_mouse_listeners(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2661 self.paint_scroll_wheel_listener(layout, cx);
2662
2663 cx.on_mouse_event({
2664 let position_map = layout.position_map.clone();
2665 let editor = self.editor.clone();
2666 let text_hitbox = layout.text_hitbox.clone();
2667 let gutter_hitbox = layout.gutter_hitbox.clone();
2668
2669 move |event: &MouseDownEvent, phase, cx| {
2670 if phase == DispatchPhase::Bubble {
2671 match event.button {
2672 MouseButton::Left => editor.update(cx, |editor, cx| {
2673 Self::mouse_left_down(
2674 editor,
2675 event,
2676 &position_map,
2677 &text_hitbox,
2678 &gutter_hitbox,
2679 cx,
2680 );
2681 }),
2682 MouseButton::Right => editor.update(cx, |editor, cx| {
2683 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
2684 }),
2685 _ => {}
2686 };
2687 }
2688 }
2689 });
2690
2691 cx.on_mouse_event({
2692 let editor = self.editor.clone();
2693 let position_map = layout.position_map.clone();
2694 let text_hitbox = layout.text_hitbox.clone();
2695
2696 move |event: &MouseUpEvent, phase, cx| {
2697 if phase == DispatchPhase::Bubble {
2698 editor.update(cx, |editor, cx| {
2699 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
2700 });
2701 }
2702 }
2703 });
2704 cx.on_mouse_event({
2705 let position_map = layout.position_map.clone();
2706 let editor = self.editor.clone();
2707 let text_hitbox = layout.text_hitbox.clone();
2708 let gutter_hitbox = layout.gutter_hitbox.clone();
2709
2710 move |event: &MouseMoveEvent, phase, cx| {
2711 if phase == DispatchPhase::Bubble {
2712 editor.update(cx, |editor, cx| {
2713 if event.pressed_button == Some(MouseButton::Left) {
2714 Self::mouse_dragged(
2715 editor,
2716 event,
2717 &position_map,
2718 text_hitbox.bounds,
2719 cx,
2720 )
2721 }
2722
2723 Self::mouse_moved(
2724 editor,
2725 event,
2726 &position_map,
2727 &text_hitbox,
2728 &gutter_hitbox,
2729 cx,
2730 )
2731 });
2732 }
2733 }
2734 });
2735 }
2736
2737 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
2738 bounds.upper_right().x - self.style.scrollbar_width
2739 }
2740
2741 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
2742 let style = &self.style;
2743 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2744 let layout = cx
2745 .text_system()
2746 .shape_line(
2747 SharedString::from(" ".repeat(column)),
2748 font_size,
2749 &[TextRun {
2750 len: column,
2751 font: style.text.font(),
2752 color: Hsla::default(),
2753 background_color: None,
2754 underline: None,
2755 strikethrough: None,
2756 }],
2757 )
2758 .unwrap();
2759
2760 layout.width
2761 }
2762
2763 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
2764 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
2765 self.column_pixels(digit_count, cx)
2766 }
2767}
2768
2769#[derive(Debug)]
2770pub(crate) struct LineWithInvisibles {
2771 pub line: ShapedLine,
2772 invisibles: Vec<Invisible>,
2773}
2774
2775impl LineWithInvisibles {
2776 fn from_chunks<'a>(
2777 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2778 text_style: &TextStyle,
2779 max_line_len: usize,
2780 max_line_count: usize,
2781 line_number_layouts: &[Option<ShapedLine>],
2782 editor_mode: EditorMode,
2783 cx: &WindowContext,
2784 ) -> Vec<Self> {
2785 let mut layouts = Vec::with_capacity(max_line_count);
2786 let mut line = String::new();
2787 let mut invisibles = Vec::new();
2788 let mut styles = Vec::new();
2789 let mut non_whitespace_added = false;
2790 let mut row = 0;
2791 let mut line_exceeded_max_len = false;
2792 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2793
2794 for highlighted_chunk in chunks.chain([HighlightedChunk {
2795 chunk: "\n",
2796 style: None,
2797 is_tab: false,
2798 }]) {
2799 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2800 if ix > 0 {
2801 let shaped_line = cx
2802 .text_system()
2803 .shape_line(line.clone().into(), font_size, &styles)
2804 .unwrap();
2805 layouts.push(Self {
2806 line: shaped_line,
2807 invisibles: std::mem::take(&mut invisibles),
2808 });
2809
2810 line.clear();
2811 styles.clear();
2812 row += 1;
2813 line_exceeded_max_len = false;
2814 non_whitespace_added = false;
2815 if row == max_line_count {
2816 return layouts;
2817 }
2818 }
2819
2820 if !line_chunk.is_empty() && !line_exceeded_max_len {
2821 let text_style = if let Some(style) = highlighted_chunk.style {
2822 Cow::Owned(text_style.clone().highlight(style))
2823 } else {
2824 Cow::Borrowed(text_style)
2825 };
2826
2827 if line.len() + line_chunk.len() > max_line_len {
2828 let mut chunk_len = max_line_len - line.len();
2829 while !line_chunk.is_char_boundary(chunk_len) {
2830 chunk_len -= 1;
2831 }
2832 line_chunk = &line_chunk[..chunk_len];
2833 line_exceeded_max_len = true;
2834 }
2835
2836 styles.push(TextRun {
2837 len: line_chunk.len(),
2838 font: text_style.font(),
2839 color: text_style.color,
2840 background_color: text_style.background_color,
2841 underline: text_style.underline,
2842 strikethrough: text_style.strikethrough,
2843 });
2844
2845 if editor_mode == EditorMode::Full {
2846 // Line wrap pads its contents with fake whitespaces,
2847 // avoid printing them
2848 let inside_wrapped_string = line_number_layouts
2849 .get(row)
2850 .and_then(|layout| layout.as_ref())
2851 .is_none();
2852 if highlighted_chunk.is_tab {
2853 if non_whitespace_added || !inside_wrapped_string {
2854 invisibles.push(Invisible::Tab {
2855 line_start_offset: line.len(),
2856 });
2857 }
2858 } else {
2859 invisibles.extend(
2860 line_chunk
2861 .chars()
2862 .enumerate()
2863 .filter(|(_, line_char)| {
2864 let is_whitespace = line_char.is_whitespace();
2865 non_whitespace_added |= !is_whitespace;
2866 is_whitespace
2867 && (non_whitespace_added || !inside_wrapped_string)
2868 })
2869 .map(|(whitespace_index, _)| Invisible::Whitespace {
2870 line_offset: line.len() + whitespace_index,
2871 }),
2872 )
2873 }
2874 }
2875
2876 line.push_str(line_chunk);
2877 }
2878 }
2879 }
2880
2881 layouts
2882 }
2883
2884 fn draw(
2885 &self,
2886 layout: &EditorLayout,
2887 row: u32,
2888 content_origin: gpui::Point<Pixels>,
2889 whitespace_setting: ShowWhitespaceSetting,
2890 selection_ranges: &[Range<DisplayPoint>],
2891 cx: &mut ElementContext,
2892 ) {
2893 let line_height = layout.position_map.line_height;
2894 let line_y =
2895 line_height * (row as f32 - layout.position_map.scroll_pixel_position.y / line_height);
2896
2897 self.line
2898 .paint(
2899 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y),
2900 line_height,
2901 cx,
2902 )
2903 .log_err();
2904
2905 self.draw_invisibles(
2906 &selection_ranges,
2907 layout,
2908 content_origin,
2909 line_y,
2910 row,
2911 line_height,
2912 whitespace_setting,
2913 cx,
2914 );
2915 }
2916
2917 #[allow(clippy::too_many_arguments)]
2918 fn draw_invisibles(
2919 &self,
2920 selection_ranges: &[Range<DisplayPoint>],
2921 layout: &EditorLayout,
2922 content_origin: gpui::Point<Pixels>,
2923 line_y: Pixels,
2924 row: u32,
2925 line_height: Pixels,
2926 whitespace_setting: ShowWhitespaceSetting,
2927 cx: &mut ElementContext,
2928 ) {
2929 let allowed_invisibles_regions = match whitespace_setting {
2930 ShowWhitespaceSetting::None => return,
2931 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2932 ShowWhitespaceSetting::All => None,
2933 };
2934
2935 for invisible in &self.invisibles {
2936 let (&token_offset, invisible_symbol) = match invisible {
2937 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2938 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2939 };
2940
2941 let x_offset = self.line.x_for_index(token_offset);
2942 let invisible_offset =
2943 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2944 let origin = content_origin
2945 + gpui::point(
2946 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
2947 line_y,
2948 );
2949
2950 if let Some(allowed_regions) = allowed_invisibles_regions {
2951 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2952 if !allowed_regions
2953 .iter()
2954 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2955 {
2956 continue;
2957 }
2958 }
2959 invisible_symbol.paint(origin, line_height, cx).log_err();
2960 }
2961 }
2962}
2963
2964#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2965enum Invisible {
2966 Tab { line_start_offset: usize },
2967 Whitespace { line_offset: usize },
2968}
2969
2970impl Element for EditorElement {
2971 type BeforeLayout = ();
2972 type AfterLayout = EditorLayout;
2973
2974 fn before_layout(&mut self, cx: &mut ElementContext) -> (gpui::LayoutId, ()) {
2975 self.editor.update(cx, |editor, cx| {
2976 editor.set_style(self.style.clone(), cx);
2977
2978 let layout_id = match editor.mode {
2979 EditorMode::SingleLine => {
2980 let rem_size = cx.rem_size();
2981 let mut style = Style::default();
2982 style.size.width = relative(1.).into();
2983 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2984 cx.with_element_context(|cx| cx.request_layout(&style, None))
2985 }
2986 EditorMode::AutoHeight { max_lines } => {
2987 let editor_handle = cx.view().clone();
2988 let max_line_number_width =
2989 self.max_line_number_width(&editor.snapshot(cx), cx);
2990 cx.with_element_context(|cx| {
2991 cx.request_measured_layout(
2992 Style::default(),
2993 move |known_dimensions, _, cx| {
2994 editor_handle
2995 .update(cx, |editor, cx| {
2996 compute_auto_height_layout(
2997 editor,
2998 max_lines,
2999 max_line_number_width,
3000 known_dimensions,
3001 cx,
3002 )
3003 })
3004 .unwrap_or_default()
3005 },
3006 )
3007 })
3008 }
3009 EditorMode::Full => {
3010 let mut style = Style::default();
3011 style.size.width = relative(1.).into();
3012 style.size.height = relative(1.).into();
3013 cx.with_element_context(|cx| cx.request_layout(&style, None))
3014 }
3015 };
3016
3017 (layout_id, ())
3018 })
3019 }
3020
3021 fn after_layout(
3022 &mut self,
3023 bounds: Bounds<Pixels>,
3024 _: &mut Self::BeforeLayout,
3025 cx: &mut ElementContext,
3026 ) -> Self::AfterLayout {
3027 let text_style = TextStyleRefinement {
3028 font_size: Some(self.style.text.font_size),
3029 line_height: Some(self.style.text.line_height),
3030 ..Default::default()
3031 };
3032 cx.with_text_style(Some(text_style), |cx| {
3033 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3034 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
3035 let style = self.style.clone();
3036
3037 let font_id = cx.text_system().resolve_font(&style.text.font());
3038 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3039 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3040 let em_width = cx
3041 .text_system()
3042 .typographic_bounds(font_id, font_size, 'm')
3043 .unwrap()
3044 .size
3045 .width;
3046 let em_advance = cx
3047 .text_system()
3048 .advance(font_id, font_size, 'm')
3049 .unwrap()
3050 .width;
3051
3052 let gutter_dimensions = snapshot.gutter_dimensions(
3053 font_id,
3054 font_size,
3055 em_width,
3056 self.max_line_number_width(&snapshot, cx),
3057 cx,
3058 );
3059 let text_width = bounds.size.width - gutter_dimensions.width;
3060 let overscroll = size(em_width, px(0.));
3061
3062 snapshot = self.editor.update(cx, |editor, cx| {
3063 editor.gutter_width = gutter_dimensions.width;
3064 editor.set_visible_line_count(bounds.size.height / line_height, cx);
3065
3066 let editor_width =
3067 text_width - gutter_dimensions.margin - overscroll.width - em_width;
3068 let wrap_width = match editor.soft_wrap_mode(cx) {
3069 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
3070 SoftWrap::EditorWidth => editor_width,
3071 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
3072 };
3073
3074 if editor.set_wrap_width(Some(wrap_width), cx) {
3075 editor.snapshot(cx)
3076 } else {
3077 snapshot
3078 }
3079 });
3080
3081 let wrap_guides = self
3082 .editor
3083 .read(cx)
3084 .wrap_guides(cx)
3085 .iter()
3086 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
3087 .collect::<SmallVec<[_; 2]>>();
3088
3089 let hitbox = cx.insert_hitbox(bounds, false);
3090 let gutter_hitbox = cx.insert_hitbox(
3091 Bounds {
3092 origin: bounds.origin,
3093 size: size(gutter_dimensions.width, bounds.size.height),
3094 },
3095 false,
3096 );
3097 let text_hitbox = cx.insert_hitbox(
3098 Bounds {
3099 origin: gutter_hitbox.upper_right(),
3100 size: size(text_width, bounds.size.height),
3101 },
3102 false,
3103 );
3104 // Offset the content_bounds from the text_bounds by the gutter margin (which
3105 // is roughly half a character wide) to make hit testing work more like how we want.
3106 let content_origin =
3107 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
3108
3109 let autoscroll_horizontally = self.editor.update(cx, |editor, cx| {
3110 let autoscroll_horizontally =
3111 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
3112 snapshot = editor.snapshot(cx);
3113 autoscroll_horizontally
3114 });
3115
3116 let mut scroll_position = snapshot.scroll_position();
3117 // The scroll position is a fractional point, the whole number of which represents
3118 // the top of the window in terms of display rows.
3119 let start_row = scroll_position.y as u32;
3120 let height_in_lines = bounds.size.height / line_height;
3121 let max_row = snapshot.max_point().row();
3122
3123 // Add 1 to ensure selections bleed off screen
3124 let end_row =
3125 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
3126
3127 let start_anchor = if start_row == 0 {
3128 Anchor::min()
3129 } else {
3130 snapshot.buffer_snapshot.anchor_before(
3131 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
3132 )
3133 };
3134 let end_anchor = if end_row > max_row {
3135 Anchor::max()
3136 } else {
3137 snapshot.buffer_snapshot.anchor_before(
3138 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
3139 )
3140 };
3141
3142 let highlighted_rows = self
3143 .editor
3144 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
3145 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
3146 start_anchor..end_anchor,
3147 &snapshot.display_snapshot,
3148 cx.theme().colors(),
3149 );
3150
3151 let redacted_ranges = self.editor.read(cx).redacted_ranges(
3152 start_anchor..end_anchor,
3153 &snapshot.display_snapshot,
3154 cx,
3155 );
3156
3157 let (selections, active_rows, newest_selection_head) = self.layout_selections(
3158 start_anchor,
3159 end_anchor,
3160 &snapshot,
3161 start_row,
3162 end_row,
3163 cx,
3164 );
3165
3166 let (line_numbers, fold_statuses) = self.layout_line_numbers(
3167 start_row..end_row,
3168 &active_rows,
3169 newest_selection_head,
3170 &snapshot,
3171 cx,
3172 );
3173
3174 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
3175
3176 let mut max_visible_line_width = Pixels::ZERO;
3177 let line_layouts =
3178 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
3179 for line_with_invisibles in &line_layouts {
3180 if line_with_invisibles.line.width > max_visible_line_width {
3181 max_visible_line_width = line_with_invisibles.line.width;
3182 }
3183 }
3184
3185 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
3186 .unwrap()
3187 .width;
3188 let mut scroll_width =
3189 longest_line_width.max(max_visible_line_width) + overscroll.width;
3190 let mut blocks = self.build_blocks(
3191 start_row..end_row,
3192 &snapshot,
3193 &hitbox,
3194 &text_hitbox,
3195 &mut scroll_width,
3196 &gutter_dimensions,
3197 em_width,
3198 gutter_dimensions.width + gutter_dimensions.margin,
3199 line_height,
3200 &line_layouts,
3201 cx,
3202 );
3203
3204 let scroll_max = point(
3205 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
3206 max_row as f32,
3207 );
3208
3209 self.editor.update(cx, |editor, cx| {
3210 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3211
3212 let autoscrolled = if autoscroll_horizontally {
3213 editor.autoscroll_horizontally(
3214 start_row,
3215 text_hitbox.size.width,
3216 scroll_width,
3217 em_width,
3218 &line_layouts,
3219 cx,
3220 )
3221 } else {
3222 false
3223 };
3224
3225 if clamped || autoscrolled {
3226 snapshot = editor.snapshot(cx);
3227 scroll_position = snapshot.scroll_position();
3228 }
3229 });
3230
3231 let scroll_pixel_position = point(
3232 scroll_position.x * em_width,
3233 scroll_position.y * line_height,
3234 );
3235
3236 cx.with_element_id(Some("blocks"), |cx| {
3237 self.layout_blocks(
3238 &mut blocks,
3239 &hitbox,
3240 line_height,
3241 scroll_pixel_position,
3242 cx,
3243 );
3244 });
3245
3246 let cursors = self.layout_cursors(
3247 &snapshot,
3248 &selections,
3249 start_row..end_row,
3250 &line_layouts,
3251 &text_hitbox,
3252 content_origin,
3253 scroll_pixel_position,
3254 line_height,
3255 em_width,
3256 cx,
3257 );
3258
3259 let scrollbar_layout = self.layout_scrollbar(
3260 &snapshot,
3261 bounds,
3262 scroll_position,
3263 line_height,
3264 height_in_lines,
3265 cx,
3266 );
3267
3268 let folds = cx.with_element_id(Some("folds"), |cx| {
3269 self.layout_folds(
3270 &snapshot,
3271 content_origin,
3272 start_anchor..end_anchor,
3273 start_row..end_row,
3274 scroll_pixel_position,
3275 line_height,
3276 &line_layouts,
3277 cx,
3278 )
3279 });
3280
3281 let gutter_settings = EditorSettings::get_global(cx).gutter;
3282
3283 let mut context_menu_visible = false;
3284 let mut code_actions_indicator = None;
3285 if let Some(newest_selection_head) = newest_selection_head {
3286 if (start_row..end_row).contains(&newest_selection_head.row()) {
3287 context_menu_visible = self.layout_context_menu(
3288 line_height,
3289 &hitbox,
3290 &text_hitbox,
3291 content_origin,
3292 start_row,
3293 scroll_pixel_position,
3294 &line_layouts,
3295 newest_selection_head,
3296 cx,
3297 );
3298 if gutter_settings.code_actions {
3299 code_actions_indicator = self.layout_code_actions_indicator(
3300 line_height,
3301 newest_selection_head,
3302 scroll_pixel_position,
3303 &gutter_dimensions,
3304 &gutter_hitbox,
3305 cx,
3306 );
3307 }
3308 }
3309 }
3310
3311 if !context_menu_visible && !cx.has_active_drag() {
3312 self.layout_hover_popovers(
3313 &snapshot,
3314 &hitbox,
3315 &text_hitbox,
3316 start_row..end_row,
3317 content_origin,
3318 scroll_pixel_position,
3319 &line_layouts,
3320 line_height,
3321 em_width,
3322 cx,
3323 );
3324 }
3325
3326 let mouse_context_menu = self.layout_mouse_context_menu(cx);
3327
3328 let fold_indicators = if gutter_settings.folds {
3329 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
3330 self.layout_gutter_fold_indicators(
3331 fold_statuses,
3332 line_height,
3333 &gutter_dimensions,
3334 gutter_settings,
3335 scroll_pixel_position,
3336 &gutter_hitbox,
3337 cx,
3338 )
3339 })
3340 } else {
3341 Vec::new()
3342 };
3343
3344 let invisible_symbol_font_size = font_size / 2.;
3345 let tab_invisible = cx
3346 .text_system()
3347 .shape_line(
3348 "→".into(),
3349 invisible_symbol_font_size,
3350 &[TextRun {
3351 len: "→".len(),
3352 font: self.style.text.font(),
3353 color: cx.theme().colors().editor_invisible,
3354 background_color: None,
3355 underline: None,
3356 strikethrough: None,
3357 }],
3358 )
3359 .unwrap();
3360 let space_invisible = cx
3361 .text_system()
3362 .shape_line(
3363 "•".into(),
3364 invisible_symbol_font_size,
3365 &[TextRun {
3366 len: "•".len(),
3367 font: self.style.text.font(),
3368 color: cx.theme().colors().editor_invisible,
3369 background_color: None,
3370 underline: None,
3371 strikethrough: None,
3372 }],
3373 )
3374 .unwrap();
3375
3376 EditorLayout {
3377 mode: snapshot.mode,
3378 position_map: Arc::new(PositionMap {
3379 size: bounds.size,
3380 scroll_pixel_position,
3381 scroll_max,
3382 line_layouts,
3383 line_height,
3384 em_width,
3385 em_advance,
3386 snapshot,
3387 }),
3388 visible_display_row_range: start_row..end_row,
3389 wrap_guides,
3390 hitbox,
3391 text_hitbox,
3392 gutter_hitbox,
3393 gutter_dimensions,
3394 content_origin,
3395 scrollbar_layout,
3396 max_row,
3397 active_rows,
3398 highlighted_rows,
3399 highlighted_ranges,
3400 redacted_ranges,
3401 line_numbers,
3402 display_hunks,
3403 folds,
3404 blocks,
3405 cursors,
3406 selections,
3407 mouse_context_menu,
3408 code_actions_indicator,
3409 fold_indicators,
3410 tab_invisible,
3411 space_invisible,
3412 }
3413 })
3414 })
3415 }
3416
3417 fn paint(
3418 &mut self,
3419 bounds: Bounds<gpui::Pixels>,
3420 _: &mut Self::BeforeLayout,
3421 layout: &mut Self::AfterLayout,
3422 cx: &mut ElementContext,
3423 ) {
3424 let focus_handle = self.editor.focus_handle(cx);
3425 let key_context = self.editor.read(cx).key_context(cx);
3426 cx.set_focus_handle(&focus_handle);
3427 cx.set_key_context(key_context);
3428 cx.set_view_id(self.editor.entity_id());
3429 cx.handle_input(
3430 &focus_handle,
3431 ElementInputHandler::new(bounds, self.editor.clone()),
3432 );
3433 self.register_actions(cx);
3434 self.register_key_listeners(cx, layout);
3435
3436 let text_style = TextStyleRefinement {
3437 font_size: Some(self.style.text.font_size),
3438 line_height: Some(self.style.text.line_height),
3439 ..Default::default()
3440 };
3441 cx.with_text_style(Some(text_style), |cx| {
3442 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3443 self.paint_mouse_listeners(layout, cx);
3444
3445 self.paint_background(layout, cx);
3446 if layout.gutter_hitbox.size.width > Pixels::ZERO {
3447 self.paint_gutter(layout, cx);
3448 }
3449 self.paint_text(layout, cx);
3450
3451 if !layout.blocks.is_empty() {
3452 cx.with_element_id(Some("blocks"), |cx| {
3453 self.paint_blocks(layout, cx);
3454 });
3455 }
3456
3457 self.paint_scrollbar(layout, cx);
3458 self.paint_mouse_context_menu(layout, cx);
3459 });
3460 })
3461 }
3462}
3463
3464impl IntoElement for EditorElement {
3465 type Element = Self;
3466
3467 fn into_element(self) -> Self::Element {
3468 self
3469 }
3470}
3471
3472type BufferRow = u32;
3473
3474pub struct EditorLayout {
3475 position_map: Arc<PositionMap>,
3476 hitbox: Hitbox,
3477 text_hitbox: Hitbox,
3478 gutter_hitbox: Hitbox,
3479 gutter_dimensions: GutterDimensions,
3480 content_origin: gpui::Point<Pixels>,
3481 scrollbar_layout: Option<ScrollbarLayout>,
3482 mode: EditorMode,
3483 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3484 visible_display_row_range: Range<u32>,
3485 active_rows: BTreeMap<u32, bool>,
3486 highlighted_rows: BTreeMap<u32, Hsla>,
3487 line_numbers: Vec<Option<ShapedLine>>,
3488 display_hunks: Vec<DisplayDiffHunk>,
3489 folds: Vec<FoldLayout>,
3490 blocks: Vec<BlockLayout>,
3491 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3492 redacted_ranges: Vec<Range<DisplayPoint>>,
3493 cursors: Vec<CursorLayout>,
3494 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3495 max_row: u32,
3496 code_actions_indicator: Option<AnyElement>,
3497 fold_indicators: Vec<Option<AnyElement>>,
3498 mouse_context_menu: Option<AnyElement>,
3499 tab_invisible: ShapedLine,
3500 space_invisible: ShapedLine,
3501}
3502
3503impl EditorLayout {
3504 fn line_end_overshoot(&self) -> Pixels {
3505 0.15 * self.position_map.line_height
3506 }
3507}
3508
3509struct ScrollbarLayout {
3510 hitbox: Hitbox,
3511 visible_row_range: Range<f32>,
3512 visible: bool,
3513 height: Pixels,
3514 scroll_height: f32,
3515 first_row_y_offset: Pixels,
3516 row_height: Pixels,
3517}
3518
3519impl ScrollbarLayout {
3520 const BORDER_WIDTH: Pixels = px(1.0);
3521 const MIN_MARKER_HEIGHT: Pixels = px(2.0);
3522
3523 fn thumb_bounds(&self) -> Bounds<Pixels> {
3524 let thumb_top = self.y_for_row(self.visible_row_range.start) - self.first_row_y_offset;
3525 let thumb_bottom = self.y_for_row(self.visible_row_range.end) + self.first_row_y_offset;
3526 Bounds::from_corners(
3527 point(self.hitbox.left(), thumb_top),
3528 point(self.hitbox.right(), thumb_bottom),
3529 )
3530 }
3531
3532 fn y_for_row(&self, row: f32) -> Pixels {
3533 self.hitbox.top() + self.first_row_y_offset + row * self.row_height
3534 }
3535
3536 fn ys_for_marker(&self, start_row: u32, end_row: u32) -> (Pixels, Pixels) {
3537 let start_y = self.y_for_row(start_row as f32);
3538 let mut end_y = self.y_for_row((end_row + 1) as f32);
3539 if end_y - start_y < Self::MIN_MARKER_HEIGHT {
3540 end_y = start_y + Self::MIN_MARKER_HEIGHT;
3541 }
3542 (start_y, end_y)
3543 }
3544}
3545
3546struct FoldLayout {
3547 display_range: Range<DisplayPoint>,
3548 hover_element: AnyElement,
3549}
3550
3551struct PositionMap {
3552 size: Size<Pixels>,
3553 line_height: Pixels,
3554 scroll_pixel_position: gpui::Point<Pixels>,
3555 scroll_max: gpui::Point<f32>,
3556 em_width: Pixels,
3557 em_advance: Pixels,
3558 line_layouts: Vec<LineWithInvisibles>,
3559 snapshot: EditorSnapshot,
3560}
3561
3562#[derive(Debug, Copy, Clone)]
3563pub struct PointForPosition {
3564 pub previous_valid: DisplayPoint,
3565 pub next_valid: DisplayPoint,
3566 pub exact_unclipped: DisplayPoint,
3567 pub column_overshoot_after_line_end: u32,
3568}
3569
3570impl PointForPosition {
3571 pub fn as_valid(&self) -> Option<DisplayPoint> {
3572 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3573 Some(self.previous_valid)
3574 } else {
3575 None
3576 }
3577 }
3578}
3579
3580impl PositionMap {
3581 fn point_for_position(
3582 &self,
3583 text_bounds: Bounds<Pixels>,
3584 position: gpui::Point<Pixels>,
3585 ) -> PointForPosition {
3586 let scroll_position = self.snapshot.scroll_position();
3587 let position = position - text_bounds.origin;
3588 let y = position.y.max(px(0.)).min(self.size.height);
3589 let x = position.x + (scroll_position.x * self.em_width);
3590 let row = ((y / self.line_height) + scroll_position.y) as u32;
3591
3592 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3593 .line_layouts
3594 .get(row as usize - scroll_position.y as usize)
3595 .map(|LineWithInvisibles { line, .. }| line)
3596 {
3597 if let Some(ix) = line.index_for_x(x) {
3598 (ix as u32, px(0.))
3599 } else {
3600 (line.len as u32, px(0.).max(x - line.width))
3601 }
3602 } else {
3603 (0, x)
3604 };
3605
3606 let mut exact_unclipped = DisplayPoint::new(row, column);
3607 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3608 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3609
3610 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3611 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3612 PointForPosition {
3613 previous_valid,
3614 next_valid,
3615 exact_unclipped,
3616 column_overshoot_after_line_end,
3617 }
3618 }
3619}
3620
3621struct BlockLayout {
3622 row: u32,
3623 element: AnyElement,
3624 available_space: Size<AvailableSpace>,
3625 style: BlockStyle,
3626}
3627
3628fn layout_line(
3629 row: u32,
3630 snapshot: &EditorSnapshot,
3631 style: &EditorStyle,
3632 cx: &WindowContext,
3633) -> Result<ShapedLine> {
3634 let mut line = snapshot.line(row);
3635
3636 if line.len() > MAX_LINE_LEN {
3637 let mut len = MAX_LINE_LEN;
3638 while !line.is_char_boundary(len) {
3639 len -= 1;
3640 }
3641
3642 line.truncate(len);
3643 }
3644
3645 cx.text_system().shape_line(
3646 line.into(),
3647 style.text.font_size.to_pixels(cx.rem_size()),
3648 &[TextRun {
3649 len: snapshot.line_len(row) as usize,
3650 font: style.text.font(),
3651 color: Hsla::default(),
3652 background_color: None,
3653 underline: None,
3654 strikethrough: None,
3655 }],
3656 )
3657}
3658
3659pub struct CursorLayout {
3660 origin: gpui::Point<Pixels>,
3661 block_width: Pixels,
3662 line_height: Pixels,
3663 color: Hsla,
3664 shape: CursorShape,
3665 block_text: Option<ShapedLine>,
3666 cursor_name: Option<AnyElement>,
3667}
3668
3669#[derive(Debug)]
3670pub struct CursorName {
3671 string: SharedString,
3672 color: Hsla,
3673 is_top_row: bool,
3674}
3675
3676impl CursorLayout {
3677 pub fn new(
3678 origin: gpui::Point<Pixels>,
3679 block_width: Pixels,
3680 line_height: Pixels,
3681 color: Hsla,
3682 shape: CursorShape,
3683 block_text: Option<ShapedLine>,
3684 ) -> CursorLayout {
3685 CursorLayout {
3686 origin,
3687 block_width,
3688 line_height,
3689 color,
3690 shape,
3691 block_text,
3692 cursor_name: None,
3693 }
3694 }
3695
3696 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3697 Bounds {
3698 origin: self.origin + origin,
3699 size: size(self.block_width, self.line_height),
3700 }
3701 }
3702
3703 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3704 match self.shape {
3705 CursorShape::Bar => Bounds {
3706 origin: self.origin + origin,
3707 size: size(px(2.0), self.line_height),
3708 },
3709 CursorShape::Block | CursorShape::Hollow => Bounds {
3710 origin: self.origin + origin,
3711 size: size(self.block_width, self.line_height),
3712 },
3713 CursorShape::Underscore => Bounds {
3714 origin: self.origin
3715 + origin
3716 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3717 size: size(self.block_width, px(2.0)),
3718 },
3719 }
3720 }
3721
3722 pub fn layout(
3723 &mut self,
3724 origin: gpui::Point<Pixels>,
3725 cursor_name: Option<CursorName>,
3726 cx: &mut ElementContext,
3727 ) {
3728 if let Some(cursor_name) = cursor_name {
3729 let bounds = self.bounds(origin);
3730 let text_size = self.line_height / 1.5;
3731
3732 let name_origin = if cursor_name.is_top_row {
3733 point(bounds.right() - px(1.), bounds.top())
3734 } else {
3735 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
3736 };
3737 let mut name_element = div()
3738 .bg(self.color)
3739 .text_size(text_size)
3740 .px_0p5()
3741 .line_height(text_size + px(2.))
3742 .text_color(cursor_name.color)
3743 .child(cursor_name.string.clone())
3744 .into_any_element();
3745
3746 name_element.layout(
3747 name_origin,
3748 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
3749 cx,
3750 );
3751
3752 self.cursor_name = Some(name_element);
3753 }
3754 }
3755
3756 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
3757 let bounds = self.bounds(origin);
3758
3759 //Draw background or border quad
3760 let cursor = if matches!(self.shape, CursorShape::Hollow) {
3761 outline(bounds, self.color)
3762 } else {
3763 fill(bounds, self.color)
3764 };
3765
3766 if let Some(name) = &mut self.cursor_name {
3767 name.paint(cx);
3768 }
3769
3770 cx.paint_quad(cursor);
3771
3772 if let Some(block_text) = &self.block_text {
3773 block_text
3774 .paint(self.origin + origin, self.line_height, cx)
3775 .log_err();
3776 }
3777 }
3778
3779 pub fn shape(&self) -> CursorShape {
3780 self.shape
3781 }
3782}
3783
3784#[derive(Debug)]
3785pub struct HighlightedRange {
3786 pub start_y: Pixels,
3787 pub line_height: Pixels,
3788 pub lines: Vec<HighlightedRangeLine>,
3789 pub color: Hsla,
3790 pub corner_radius: Pixels,
3791}
3792
3793#[derive(Debug)]
3794pub struct HighlightedRangeLine {
3795 pub start_x: Pixels,
3796 pub end_x: Pixels,
3797}
3798
3799impl HighlightedRange {
3800 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
3801 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3802 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3803 self.paint_lines(
3804 self.start_y + self.line_height,
3805 &self.lines[1..],
3806 bounds,
3807 cx,
3808 );
3809 } else {
3810 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3811 }
3812 }
3813
3814 fn paint_lines(
3815 &self,
3816 start_y: Pixels,
3817 lines: &[HighlightedRangeLine],
3818 _bounds: Bounds<Pixels>,
3819 cx: &mut ElementContext,
3820 ) {
3821 if lines.is_empty() {
3822 return;
3823 }
3824
3825 let first_line = lines.first().unwrap();
3826 let last_line = lines.last().unwrap();
3827
3828 let first_top_left = point(first_line.start_x, start_y);
3829 let first_top_right = point(first_line.end_x, start_y);
3830
3831 let curve_height = point(Pixels::ZERO, self.corner_radius);
3832 let curve_width = |start_x: Pixels, end_x: Pixels| {
3833 let max = (end_x - start_x) / 2.;
3834 let width = if max < self.corner_radius {
3835 max
3836 } else {
3837 self.corner_radius
3838 };
3839
3840 point(width, Pixels::ZERO)
3841 };
3842
3843 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3844 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3845 path.curve_to(first_top_right + curve_height, first_top_right);
3846
3847 let mut iter = lines.iter().enumerate().peekable();
3848 while let Some((ix, line)) = iter.next() {
3849 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3850
3851 if let Some((_, next_line)) = iter.peek() {
3852 let next_top_right = point(next_line.end_x, bottom_right.y);
3853
3854 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3855 Ordering::Equal => {
3856 path.line_to(bottom_right);
3857 }
3858 Ordering::Less => {
3859 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3860 path.line_to(bottom_right - curve_height);
3861 if self.corner_radius > Pixels::ZERO {
3862 path.curve_to(bottom_right - curve_width, bottom_right);
3863 }
3864 path.line_to(next_top_right + curve_width);
3865 if self.corner_radius > Pixels::ZERO {
3866 path.curve_to(next_top_right + curve_height, next_top_right);
3867 }
3868 }
3869 Ordering::Greater => {
3870 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3871 path.line_to(bottom_right - curve_height);
3872 if self.corner_radius > Pixels::ZERO {
3873 path.curve_to(bottom_right + curve_width, bottom_right);
3874 }
3875 path.line_to(next_top_right - curve_width);
3876 if self.corner_radius > Pixels::ZERO {
3877 path.curve_to(next_top_right + curve_height, next_top_right);
3878 }
3879 }
3880 }
3881 } else {
3882 let curve_width = curve_width(line.start_x, line.end_x);
3883 path.line_to(bottom_right - curve_height);
3884 if self.corner_radius > Pixels::ZERO {
3885 path.curve_to(bottom_right - curve_width, bottom_right);
3886 }
3887
3888 let bottom_left = point(line.start_x, bottom_right.y);
3889 path.line_to(bottom_left + curve_width);
3890 if self.corner_radius > Pixels::ZERO {
3891 path.curve_to(bottom_left - curve_height, bottom_left);
3892 }
3893 }
3894 }
3895
3896 if first_line.start_x > last_line.start_x {
3897 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3898 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3899 path.line_to(second_top_left + curve_height);
3900 if self.corner_radius > Pixels::ZERO {
3901 path.curve_to(second_top_left + curve_width, second_top_left);
3902 }
3903 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3904 path.line_to(first_bottom_left - curve_width);
3905 if self.corner_radius > Pixels::ZERO {
3906 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3907 }
3908 }
3909
3910 path.line_to(first_top_left + curve_height);
3911 if self.corner_radius > Pixels::ZERO {
3912 path.curve_to(first_top_left + top_curve_width, first_top_left);
3913 }
3914 path.line_to(first_top_right - top_curve_width);
3915
3916 cx.paint_path(path, self.color);
3917 }
3918}
3919
3920pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3921 (delta.pow(1.5) / 100.0).into()
3922}
3923
3924fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3925 (delta.pow(1.2) / 300.0).into()
3926}
3927
3928#[cfg(test)]
3929mod tests {
3930 use super::*;
3931 use crate::{
3932 display_map::{BlockDisposition, BlockProperties},
3933 editor_tests::{init_test, update_test_language_settings},
3934 Editor, MultiBuffer,
3935 };
3936 use gpui::TestAppContext;
3937 use language::language_settings;
3938 use log::info;
3939 use std::{num::NonZeroU32, sync::Arc};
3940 use util::test::sample_text;
3941
3942 #[gpui::test]
3943 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3944 init_test(cx, |_| {});
3945 let window = cx.add_window(|cx| {
3946 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3947 Editor::new(EditorMode::Full, buffer, None, cx)
3948 });
3949
3950 let editor = window.root(cx).unwrap();
3951 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3952 let element = EditorElement::new(&editor, style);
3953 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
3954
3955 let layouts = cx
3956 .update_window(*window, |_, cx| {
3957 cx.with_element_context(|cx| {
3958 element
3959 .layout_line_numbers(
3960 0..6,
3961 &Default::default(),
3962 Some(DisplayPoint::new(0, 0)),
3963 &snapshot,
3964 cx,
3965 )
3966 .0
3967 })
3968 })
3969 .unwrap();
3970 assert_eq!(layouts.len(), 6);
3971
3972 let relative_rows = window
3973 .update(cx, |editor, cx| {
3974 let snapshot = editor.snapshot(cx);
3975 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3976 })
3977 .unwrap();
3978 assert_eq!(relative_rows[&0], 3);
3979 assert_eq!(relative_rows[&1], 2);
3980 assert_eq!(relative_rows[&2], 1);
3981 // current line has no relative number
3982 assert_eq!(relative_rows[&4], 1);
3983 assert_eq!(relative_rows[&5], 2);
3984
3985 // works if cursor is before screen
3986 let relative_rows = window
3987 .update(cx, |editor, cx| {
3988 let snapshot = editor.snapshot(cx);
3989
3990 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3991 })
3992 .unwrap();
3993 assert_eq!(relative_rows.len(), 3);
3994 assert_eq!(relative_rows[&3], 2);
3995 assert_eq!(relative_rows[&4], 3);
3996 assert_eq!(relative_rows[&5], 4);
3997
3998 // works if cursor is after screen
3999 let relative_rows = window
4000 .update(cx, |editor, cx| {
4001 let snapshot = editor.snapshot(cx);
4002
4003 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
4004 })
4005 .unwrap();
4006 assert_eq!(relative_rows.len(), 3);
4007 assert_eq!(relative_rows[&0], 5);
4008 assert_eq!(relative_rows[&1], 4);
4009 assert_eq!(relative_rows[&2], 3);
4010 }
4011
4012 #[gpui::test]
4013 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
4014 init_test(cx, |_| {});
4015
4016 let window = cx.add_window(|cx| {
4017 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
4018 Editor::new(EditorMode::Full, buffer, None, cx)
4019 });
4020 let editor = window.root(cx).unwrap();
4021 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4022 let mut element = EditorElement::new(&editor, style);
4023
4024 window
4025 .update(cx, |editor, cx| {
4026 editor.cursor_shape = CursorShape::Block;
4027 editor.change_selections(None, cx, |s| {
4028 s.select_ranges([
4029 Point::new(0, 0)..Point::new(1, 0),
4030 Point::new(3, 2)..Point::new(3, 3),
4031 Point::new(5, 6)..Point::new(6, 0),
4032 ]);
4033 });
4034 })
4035 .unwrap();
4036 let state = cx
4037 .update_window(window.into(), |_view, cx| {
4038 cx.with_element_context(|cx| {
4039 element.after_layout(
4040 Bounds {
4041 origin: point(px(500.), px(500.)),
4042 size: size(px(500.), px(500.)),
4043 },
4044 &mut (),
4045 cx,
4046 )
4047 })
4048 })
4049 .unwrap();
4050
4051 assert_eq!(state.selections.len(), 1);
4052 let local_selections = &state.selections[0].1;
4053 assert_eq!(local_selections.len(), 3);
4054 // moves cursor back one line
4055 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
4056 assert_eq!(
4057 local_selections[0].range,
4058 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
4059 );
4060
4061 // moves cursor back one column
4062 assert_eq!(
4063 local_selections[1].range,
4064 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
4065 );
4066 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
4067
4068 // leaves cursor on the max point
4069 assert_eq!(
4070 local_selections[2].range,
4071 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
4072 );
4073 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
4074
4075 // active lines does not include 1 (even though the range of the selection does)
4076 assert_eq!(
4077 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
4078 vec![0, 3, 5, 6]
4079 );
4080
4081 // multi-buffer support
4082 // in DisplayPoint coordinates, this is what we're dealing with:
4083 // 0: [[file
4084 // 1: header]]
4085 // 2: aaaaaa
4086 // 3: bbbbbb
4087 // 4: cccccc
4088 // 5:
4089 // 6: ...
4090 // 7: ffffff
4091 // 8: gggggg
4092 // 9: hhhhhh
4093 // 10:
4094 // 11: [[file
4095 // 12: header]]
4096 // 13: bbbbbb
4097 // 14: cccccc
4098 // 15: dddddd
4099 let window = cx.add_window(|cx| {
4100 let buffer = MultiBuffer::build_multi(
4101 [
4102 (
4103 &(sample_text(8, 6, 'a') + "\n"),
4104 vec![
4105 Point::new(0, 0)..Point::new(3, 0),
4106 Point::new(4, 0)..Point::new(7, 0),
4107 ],
4108 ),
4109 (
4110 &(sample_text(8, 6, 'a') + "\n"),
4111 vec![Point::new(1, 0)..Point::new(3, 0)],
4112 ),
4113 ],
4114 cx,
4115 );
4116 Editor::new(EditorMode::Full, buffer, None, cx)
4117 });
4118 let editor = window.root(cx).unwrap();
4119 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4120 let mut element = EditorElement::new(&editor, style);
4121 let _state = window.update(cx, |editor, cx| {
4122 editor.cursor_shape = CursorShape::Block;
4123 editor.change_selections(None, cx, |s| {
4124 s.select_display_ranges([
4125 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
4126 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
4127 ]);
4128 });
4129 });
4130
4131 let state = cx
4132 .update_window(window.into(), |_view, cx| {
4133 cx.with_element_context(|cx| {
4134 element.after_layout(
4135 Bounds {
4136 origin: point(px(500.), px(500.)),
4137 size: size(px(500.), px(500.)),
4138 },
4139 &mut (),
4140 cx,
4141 )
4142 })
4143 })
4144 .unwrap();
4145 assert_eq!(state.selections.len(), 1);
4146 let local_selections = &state.selections[0].1;
4147 assert_eq!(local_selections.len(), 2);
4148
4149 // moves cursor on excerpt boundary back a line
4150 // and doesn't allow selection to bleed through
4151 assert_eq!(
4152 local_selections[0].range,
4153 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
4154 );
4155 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
4156 // moves cursor on buffer boundary back two lines
4157 // and doesn't allow selection to bleed through
4158 assert_eq!(
4159 local_selections[1].range,
4160 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
4161 );
4162 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
4163 }
4164
4165 #[gpui::test]
4166 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
4167 init_test(cx, |_| {});
4168
4169 let window = cx.add_window(|cx| {
4170 let buffer = MultiBuffer::build_simple("", cx);
4171 Editor::new(EditorMode::Full, buffer, None, cx)
4172 });
4173 let editor = window.root(cx).unwrap();
4174 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4175 window
4176 .update(cx, |editor, cx| {
4177 editor.set_placeholder_text("hello", cx);
4178 editor.insert_blocks(
4179 [BlockProperties {
4180 style: BlockStyle::Fixed,
4181 disposition: BlockDisposition::Above,
4182 height: 3,
4183 position: Anchor::min(),
4184 render: Arc::new(|_| div().into_any()),
4185 }],
4186 None,
4187 cx,
4188 );
4189
4190 // Blur the editor so that it displays placeholder text.
4191 cx.blur();
4192 })
4193 .unwrap();
4194
4195 let mut element = EditorElement::new(&editor, style);
4196 let state = cx
4197 .update_window(window.into(), |_view, cx| {
4198 cx.with_element_context(|cx| {
4199 element.after_layout(
4200 Bounds {
4201 origin: point(px(500.), px(500.)),
4202 size: size(px(500.), px(500.)),
4203 },
4204 &mut (),
4205 cx,
4206 )
4207 })
4208 })
4209 .unwrap();
4210
4211 assert_eq!(state.position_map.line_layouts.len(), 4);
4212 assert_eq!(
4213 state
4214 .line_numbers
4215 .iter()
4216 .map(Option::is_some)
4217 .collect::<Vec<_>>(),
4218 &[false, false, false, true]
4219 );
4220 }
4221
4222 #[gpui::test]
4223 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
4224 const TAB_SIZE: u32 = 4;
4225
4226 let input_text = "\t \t|\t| a b";
4227 let expected_invisibles = vec![
4228 Invisible::Tab {
4229 line_start_offset: 0,
4230 },
4231 Invisible::Whitespace {
4232 line_offset: TAB_SIZE as usize,
4233 },
4234 Invisible::Tab {
4235 line_start_offset: TAB_SIZE as usize + 1,
4236 },
4237 Invisible::Tab {
4238 line_start_offset: TAB_SIZE as usize * 2 + 1,
4239 },
4240 Invisible::Whitespace {
4241 line_offset: TAB_SIZE as usize * 3 + 1,
4242 },
4243 Invisible::Whitespace {
4244 line_offset: TAB_SIZE as usize * 3 + 3,
4245 },
4246 ];
4247 assert_eq!(
4248 expected_invisibles.len(),
4249 input_text
4250 .chars()
4251 .filter(|initial_char| initial_char.is_whitespace())
4252 .count(),
4253 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4254 );
4255
4256 init_test(cx, |s| {
4257 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4258 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
4259 });
4260
4261 let actual_invisibles =
4262 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
4263
4264 assert_eq!(expected_invisibles, actual_invisibles);
4265 }
4266
4267 #[gpui::test]
4268 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
4269 init_test(cx, |s| {
4270 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4271 s.defaults.tab_size = NonZeroU32::new(4);
4272 });
4273
4274 for editor_mode_without_invisibles in [
4275 EditorMode::SingleLine,
4276 EditorMode::AutoHeight { max_lines: 100 },
4277 ] {
4278 let invisibles = collect_invisibles_from_new_editor(
4279 cx,
4280 editor_mode_without_invisibles,
4281 "\t\t\t| | a b",
4282 px(500.0),
4283 );
4284 assert!(invisibles.is_empty(),
4285 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4286 }
4287 }
4288
4289 #[gpui::test]
4290 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4291 let tab_size = 4;
4292 let input_text = "a\tbcd ".repeat(9);
4293 let repeated_invisibles = [
4294 Invisible::Tab {
4295 line_start_offset: 1,
4296 },
4297 Invisible::Whitespace {
4298 line_offset: tab_size as usize + 3,
4299 },
4300 Invisible::Whitespace {
4301 line_offset: tab_size as usize + 4,
4302 },
4303 Invisible::Whitespace {
4304 line_offset: tab_size as usize + 5,
4305 },
4306 ];
4307 let expected_invisibles = std::iter::once(repeated_invisibles)
4308 .cycle()
4309 .take(9)
4310 .flatten()
4311 .collect::<Vec<_>>();
4312 assert_eq!(
4313 expected_invisibles.len(),
4314 input_text
4315 .chars()
4316 .filter(|initial_char| initial_char.is_whitespace())
4317 .count(),
4318 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4319 );
4320 info!("Expected invisibles: {expected_invisibles:?}");
4321
4322 init_test(cx, |_| {});
4323
4324 // Put the same string with repeating whitespace pattern into editors of various size,
4325 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4326 let resize_step = 10.0;
4327 let mut editor_width = 200.0;
4328 while editor_width <= 1000.0 {
4329 update_test_language_settings(cx, |s| {
4330 s.defaults.tab_size = NonZeroU32::new(tab_size);
4331 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4332 s.defaults.preferred_line_length = Some(editor_width as u32);
4333 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4334 });
4335
4336 let actual_invisibles = collect_invisibles_from_new_editor(
4337 cx,
4338 EditorMode::Full,
4339 &input_text,
4340 px(editor_width),
4341 );
4342
4343 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4344 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4345 let mut i = 0;
4346 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4347 i = actual_index;
4348 match expected_invisibles.get(i) {
4349 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4350 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4351 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4352 _ => {
4353 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4354 }
4355 },
4356 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4357 }
4358 }
4359 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4360 assert!(
4361 missing_expected_invisibles.is_empty(),
4362 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4363 );
4364
4365 editor_width += resize_step;
4366 }
4367 }
4368
4369 fn collect_invisibles_from_new_editor(
4370 cx: &mut TestAppContext,
4371 editor_mode: EditorMode,
4372 input_text: &str,
4373 editor_width: Pixels,
4374 ) -> Vec<Invisible> {
4375 info!(
4376 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4377 editor_width.0
4378 );
4379 let window = cx.add_window(|cx| {
4380 let buffer = MultiBuffer::build_simple(&input_text, cx);
4381 Editor::new(editor_mode, buffer, None, cx)
4382 });
4383 let editor = window.root(cx).unwrap();
4384 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4385 let mut element = EditorElement::new(&editor, style);
4386 window
4387 .update(cx, |editor, cx| {
4388 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4389 editor.set_wrap_width(Some(editor_width), cx);
4390 })
4391 .unwrap();
4392 let layout_state = cx
4393 .update_window(window.into(), |_, cx| {
4394 cx.with_element_context(|cx| {
4395 element.after_layout(
4396 Bounds {
4397 origin: point(px(500.), px(500.)),
4398 size: size(px(500.), px(500.)),
4399 },
4400 &mut (),
4401 cx,
4402 )
4403 })
4404 })
4405 .unwrap();
4406
4407 layout_state
4408 .position_map
4409 .line_layouts
4410 .iter()
4411 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
4412 .cloned()
4413 .collect()
4414 }
4415}
4416
4417pub fn register_action<T: Action>(
4418 view: &View<Editor>,
4419 cx: &mut WindowContext,
4420 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4421) {
4422 let view = view.clone();
4423 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4424 let action = action.downcast_ref().unwrap();
4425 if phase == DispatchPhase::Bubble {
4426 view.update(cx, |editor, cx| {
4427 listener(editor, action, cx);
4428 })
4429 }
4430 })
4431}
4432
4433fn compute_auto_height_layout(
4434 editor: &mut Editor,
4435 max_lines: usize,
4436 max_line_number_width: Pixels,
4437 known_dimensions: Size<Option<Pixels>>,
4438 cx: &mut ViewContext<Editor>,
4439) -> Option<Size<Pixels>> {
4440 let width = known_dimensions.width?;
4441 if let Some(height) = known_dimensions.height {
4442 return Some(size(width, height));
4443 }
4444
4445 let style = editor.style.as_ref().unwrap();
4446 let font_id = cx.text_system().resolve_font(&style.text.font());
4447 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4448 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4449 let em_width = cx
4450 .text_system()
4451 .typographic_bounds(font_id, font_size, 'm')
4452 .unwrap()
4453 .size
4454 .width;
4455
4456 let mut snapshot = editor.snapshot(cx);
4457 let gutter_dimensions =
4458 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4459
4460 editor.gutter_width = gutter_dimensions.width;
4461 let text_width = width - gutter_dimensions.width;
4462 let overscroll = size(em_width, px(0.));
4463
4464 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4465 if editor.set_wrap_width(Some(editor_width), cx) {
4466 snapshot = editor.snapshot(cx);
4467 }
4468
4469 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4470 let height = scroll_height
4471 .max(line_height)
4472 .min(line_height * max_lines as f32);
4473
4474 Some(size(width, height))
4475}