1use crate::{
2 blame_entry_tooltip::{blame_entry_relative_timestamp, BlameEntryTooltip},
3 display_map::{
4 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
5 TransformBlock,
6 },
7 editor_settings::{DoubleClickInMultibuffer, MultiCursorModifier, ShowScrollbar},
8 git::{blame::GitBlame, diff_hunk_to_display, DisplayDiffHunk},
9 hover_popover::{
10 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
11 },
12 items::BufferSearchHighlights,
13 mouse_context_menu::{self, MouseContextMenu},
14 scroll::scroll_amount::ScrollAmount,
15 CursorShape, DisplayPoint, DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode,
16 EditorSettings, EditorSnapshot, EditorStyle, ExpandExcerpts, GutterDimensions, HalfPageDown,
17 HalfPageUp, HoveredCursor, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point,
18 SelectPhase, Selection, SoftWrap, ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
19};
20use anyhow::Result;
21use client::ParticipantIndex;
22use collections::{BTreeMap, HashMap};
23use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
24use gpui::{
25 anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
26 transparent_black, Action, AnchorCorner, AnyElement, AvailableSpace, Bounds, ClipboardItem,
27 ContentMask, Corners, CursorStyle, DispatchPhase, Edges, Element, ElementInputHandler, Entity,
28 GlobalElementId, Hitbox, Hsla, InteractiveElement, IntoElement, ModifiersChangedEvent,
29 MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad, ParentElement, Pixels,
30 ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size, Stateful,
31 StatefulInteractiveElement, Style, Styled, TextRun, TextStyle, TextStyleRefinement, View,
32 ViewContext, WeakView, WindowContext,
33};
34use itertools::Itertools;
35use language::language_settings::ShowWhitespaceSetting;
36use lsp::DiagnosticSeverity;
37use multi_buffer::Anchor;
38use project::{
39 project_settings::{GitGutterSetting, ProjectSettings},
40 ProjectPath,
41};
42use settings::Settings;
43use smallvec::SmallVec;
44use std::{
45 any::TypeId,
46 borrow::Cow,
47 cmp::{self, max, Ordering},
48 fmt::Write,
49 iter, mem,
50 ops::{Deref, Range},
51 sync::Arc,
52};
53use sum_tree::Bias;
54use theme::{ActiveTheme, PlayerColor};
55use ui::prelude::*;
56use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
57use util::ResultExt;
58use workspace::{item::Item, Workspace};
59
60struct SelectionLayout {
61 head: DisplayPoint,
62 cursor_shape: CursorShape,
63 is_newest: bool,
64 is_local: bool,
65 range: Range<DisplayPoint>,
66 active_rows: Range<u32>,
67 user_name: Option<SharedString>,
68}
69
70impl SelectionLayout {
71 fn new<T: ToPoint + ToDisplayPoint + Clone>(
72 selection: Selection<T>,
73 line_mode: bool,
74 cursor_shape: CursorShape,
75 map: &DisplaySnapshot,
76 is_newest: bool,
77 is_local: bool,
78 user_name: Option<SharedString>,
79 ) -> Self {
80 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
81 let display_selection = point_selection.map(|p| p.to_display_point(map));
82 let mut range = display_selection.range();
83 let mut head = display_selection.head();
84 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
85 ..map.next_line_boundary(point_selection.end).1.row();
86
87 // vim visual line mode
88 if line_mode {
89 let point_range = map.expand_to_line(point_selection.range());
90 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
91 }
92
93 // any vim visual mode (including line mode)
94 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
95 && !range.is_empty()
96 && !selection.reversed
97 {
98 if head.column() > 0 {
99 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
100 } else if head.row() > 0 && head != map.max_point() {
101 head = map.clip_point(
102 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
103 Bias::Left,
104 );
105 // updating range.end is a no-op unless you're cursor is
106 // on the newline containing a multi-buffer divider
107 // in which case the clip_point may have moved the head up
108 // an additional row.
109 range.end = DisplayPoint::new(head.row() + 1, 0);
110 active_rows.end = head.row();
111 }
112 }
113
114 Self {
115 head,
116 cursor_shape,
117 is_newest,
118 is_local,
119 range,
120 active_rows,
121 user_name,
122 }
123 }
124}
125
126pub struct EditorElement {
127 editor: View<Editor>,
128 style: EditorStyle,
129}
130
131impl EditorElement {
132 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
133 Self {
134 editor: editor.clone(),
135 style,
136 }
137 }
138
139 fn register_actions(&self, cx: &mut WindowContext) {
140 let view = &self.editor;
141 view.update(cx, |editor, cx| {
142 for action in editor.editor_actions.iter() {
143 (action)(cx)
144 }
145 });
146
147 crate::rust_analyzer_ext::apply_related_actions(view, cx);
148 register_action(view, cx, Editor::move_left);
149 register_action(view, cx, Editor::move_right);
150 register_action(view, cx, Editor::move_down);
151 register_action(view, cx, Editor::move_down_by_lines);
152 register_action(view, cx, Editor::select_down_by_lines);
153 register_action(view, cx, Editor::move_up);
154 register_action(view, cx, Editor::move_up_by_lines);
155 register_action(view, cx, Editor::select_up_by_lines);
156 register_action(view, cx, Editor::cancel);
157 register_action(view, cx, Editor::newline);
158 register_action(view, cx, Editor::newline_above);
159 register_action(view, cx, Editor::newline_below);
160 register_action(view, cx, Editor::backspace);
161 register_action(view, cx, Editor::delete);
162 register_action(view, cx, Editor::tab);
163 register_action(view, cx, Editor::tab_prev);
164 register_action(view, cx, Editor::indent);
165 register_action(view, cx, Editor::outdent);
166 register_action(view, cx, Editor::delete_line);
167 register_action(view, cx, Editor::join_lines);
168 register_action(view, cx, Editor::sort_lines_case_sensitive);
169 register_action(view, cx, Editor::sort_lines_case_insensitive);
170 register_action(view, cx, Editor::reverse_lines);
171 register_action(view, cx, Editor::shuffle_lines);
172 register_action(view, cx, Editor::convert_to_upper_case);
173 register_action(view, cx, Editor::convert_to_lower_case);
174 register_action(view, cx, Editor::convert_to_title_case);
175 register_action(view, cx, Editor::convert_to_snake_case);
176 register_action(view, cx, Editor::convert_to_kebab_case);
177 register_action(view, cx, Editor::convert_to_upper_camel_case);
178 register_action(view, cx, Editor::convert_to_lower_camel_case);
179 register_action(view, cx, Editor::delete_to_previous_word_start);
180 register_action(view, cx, Editor::delete_to_previous_subword_start);
181 register_action(view, cx, Editor::delete_to_next_word_end);
182 register_action(view, cx, Editor::delete_to_next_subword_end);
183 register_action(view, cx, Editor::delete_to_beginning_of_line);
184 register_action(view, cx, Editor::delete_to_end_of_line);
185 register_action(view, cx, Editor::cut_to_end_of_line);
186 register_action(view, cx, Editor::duplicate_line_up);
187 register_action(view, cx, Editor::duplicate_line_down);
188 register_action(view, cx, Editor::move_line_up);
189 register_action(view, cx, Editor::move_line_down);
190 register_action(view, cx, Editor::transpose);
191 register_action(view, cx, Editor::cut);
192 register_action(view, cx, Editor::copy);
193 register_action(view, cx, Editor::paste);
194 register_action(view, cx, Editor::undo);
195 register_action(view, cx, Editor::redo);
196 register_action(view, cx, Editor::move_page_up);
197 register_action(view, cx, Editor::move_page_down);
198 register_action(view, cx, Editor::next_screen);
199 register_action(view, cx, Editor::scroll_cursor_top);
200 register_action(view, cx, Editor::scroll_cursor_center);
201 register_action(view, cx, Editor::scroll_cursor_bottom);
202 register_action(view, cx, |editor, _: &LineDown, cx| {
203 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
204 });
205 register_action(view, cx, |editor, _: &LineUp, cx| {
206 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
207 });
208 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
209 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
210 });
211 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
212 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
213 });
214 register_action(view, cx, |editor, _: &PageDown, cx| {
215 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
216 });
217 register_action(view, cx, |editor, _: &PageUp, cx| {
218 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
219 });
220 register_action(view, cx, Editor::move_to_previous_word_start);
221 register_action(view, cx, Editor::move_to_previous_subword_start);
222 register_action(view, cx, Editor::move_to_next_word_end);
223 register_action(view, cx, Editor::move_to_next_subword_end);
224 register_action(view, cx, Editor::move_to_beginning_of_line);
225 register_action(view, cx, Editor::move_to_end_of_line);
226 register_action(view, cx, Editor::move_to_start_of_paragraph);
227 register_action(view, cx, Editor::move_to_end_of_paragraph);
228 register_action(view, cx, Editor::move_to_beginning);
229 register_action(view, cx, Editor::move_to_end);
230 register_action(view, cx, Editor::select_up);
231 register_action(view, cx, Editor::select_down);
232 register_action(view, cx, Editor::select_left);
233 register_action(view, cx, Editor::select_right);
234 register_action(view, cx, Editor::select_to_previous_word_start);
235 register_action(view, cx, Editor::select_to_previous_subword_start);
236 register_action(view, cx, Editor::select_to_next_word_end);
237 register_action(view, cx, Editor::select_to_next_subword_end);
238 register_action(view, cx, Editor::select_to_beginning_of_line);
239 register_action(view, cx, Editor::select_to_end_of_line);
240 register_action(view, cx, Editor::select_to_start_of_paragraph);
241 register_action(view, cx, Editor::select_to_end_of_paragraph);
242 register_action(view, cx, Editor::select_to_beginning);
243 register_action(view, cx, Editor::select_to_end);
244 register_action(view, cx, Editor::select_all);
245 register_action(view, cx, |editor, action, cx| {
246 editor.select_all_matches(action, cx).log_err();
247 });
248 register_action(view, cx, Editor::select_line);
249 register_action(view, cx, Editor::split_selection_into_lines);
250 register_action(view, cx, Editor::add_selection_above);
251 register_action(view, cx, Editor::add_selection_below);
252 register_action(view, cx, |editor, action, cx| {
253 editor.select_next(action, cx).log_err();
254 });
255 register_action(view, cx, |editor, action, cx| {
256 editor.select_previous(action, cx).log_err();
257 });
258 register_action(view, cx, Editor::toggle_comments);
259 register_action(view, cx, Editor::select_larger_syntax_node);
260 register_action(view, cx, Editor::select_smaller_syntax_node);
261 register_action(view, cx, Editor::move_to_enclosing_bracket);
262 register_action(view, cx, Editor::undo_selection);
263 register_action(view, cx, Editor::redo_selection);
264 if !view.read(cx).is_singleton(cx) {
265 register_action(view, cx, Editor::expand_excerpts);
266 }
267 register_action(view, cx, Editor::go_to_diagnostic);
268 register_action(view, cx, Editor::go_to_prev_diagnostic);
269 register_action(view, cx, Editor::go_to_hunk);
270 register_action(view, cx, Editor::go_to_prev_hunk);
271 register_action(view, cx, |editor, a, cx| {
272 editor.go_to_definition(a, cx).detach_and_log_err(cx);
273 });
274 register_action(view, cx, |editor, a, cx| {
275 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
276 });
277 register_action(view, cx, |editor, a, cx| {
278 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
279 });
280 register_action(view, cx, |editor, a, cx| {
281 editor
282 .go_to_implementation_split(a, cx)
283 .detach_and_log_err(cx);
284 });
285 register_action(view, cx, |editor, a, cx| {
286 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
287 });
288 register_action(view, cx, |editor, a, cx| {
289 editor
290 .go_to_type_definition_split(a, cx)
291 .detach_and_log_err(cx);
292 });
293 register_action(view, cx, Editor::open_url);
294 register_action(view, cx, Editor::fold);
295 register_action(view, cx, Editor::fold_at);
296 register_action(view, cx, Editor::unfold_lines);
297 register_action(view, cx, Editor::unfold_at);
298 register_action(view, cx, Editor::fold_selected_ranges);
299 register_action(view, cx, Editor::show_completions);
300 register_action(view, cx, Editor::toggle_code_actions);
301 register_action(view, cx, Editor::open_excerpts);
302 register_action(view, cx, Editor::open_excerpts_in_split);
303 register_action(view, cx, Editor::toggle_soft_wrap);
304 register_action(view, cx, Editor::toggle_line_numbers);
305 register_action(view, cx, Editor::toggle_inlay_hints);
306 register_action(view, cx, hover_popover::hover);
307 register_action(view, cx, Editor::reveal_in_finder);
308 register_action(view, cx, Editor::copy_path);
309 register_action(view, cx, Editor::copy_relative_path);
310 register_action(view, cx, Editor::copy_highlight_json);
311 register_action(view, cx, Editor::copy_permalink_to_line);
312 register_action(view, cx, Editor::open_permalink_to_line);
313 register_action(view, cx, Editor::toggle_git_blame);
314 register_action(view, cx, Editor::toggle_git_blame_inline);
315 register_action(view, cx, |editor, action, cx| {
316 if let Some(task) = editor.format(action, cx) {
317 task.detach_and_log_err(cx);
318 } else {
319 cx.propagate();
320 }
321 });
322 register_action(view, cx, Editor::restart_language_server);
323 register_action(view, cx, Editor::show_character_palette);
324 register_action(view, cx, |editor, action, cx| {
325 if let Some(task) = editor.confirm_completion(action, cx) {
326 task.detach_and_log_err(cx);
327 } else {
328 cx.propagate();
329 }
330 });
331 register_action(view, cx, |editor, action, cx| {
332 if let Some(task) = editor.confirm_code_action(action, cx) {
333 task.detach_and_log_err(cx);
334 } else {
335 cx.propagate();
336 }
337 });
338 register_action(view, cx, |editor, action, cx| {
339 if let Some(task) = editor.rename(action, cx) {
340 task.detach_and_log_err(cx);
341 } else {
342 cx.propagate();
343 }
344 });
345 register_action(view, cx, |editor, action, cx| {
346 if let Some(task) = editor.confirm_rename(action, cx) {
347 task.detach_and_log_err(cx);
348 } else {
349 cx.propagate();
350 }
351 });
352 register_action(view, cx, |editor, action, cx| {
353 if let Some(task) = editor.find_all_references(action, cx) {
354 task.detach_and_log_err(cx);
355 } else {
356 cx.propagate();
357 }
358 });
359 register_action(view, cx, Editor::next_inline_completion);
360 register_action(view, cx, Editor::previous_inline_completion);
361 register_action(view, cx, Editor::show_inline_completion);
362 register_action(view, cx, Editor::context_menu_first);
363 register_action(view, cx, Editor::context_menu_prev);
364 register_action(view, cx, Editor::context_menu_next);
365 register_action(view, cx, Editor::context_menu_last);
366 register_action(view, cx, Editor::display_cursor_names);
367 register_action(view, cx, Editor::unique_lines_case_insensitive);
368 register_action(view, cx, Editor::unique_lines_case_sensitive);
369 register_action(view, cx, Editor::accept_partial_inline_completion);
370 register_action(view, cx, Editor::revert_selected_hunks);
371 register_action(view, cx, Editor::open_active_item_in_terminal)
372 }
373
374 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
375 let position_map = layout.position_map.clone();
376 cx.on_key_event({
377 let editor = self.editor.clone();
378 let text_hitbox = layout.text_hitbox.clone();
379 move |event: &ModifiersChangedEvent, phase, cx| {
380 if phase != DispatchPhase::Bubble {
381 return;
382 }
383
384 editor.update(cx, |editor, cx| {
385 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
386 })
387 }
388 });
389 }
390
391 fn modifiers_changed(
392 editor: &mut Editor,
393 event: &ModifiersChangedEvent,
394 position_map: &PositionMap,
395 text_hitbox: &Hitbox,
396 cx: &mut ViewContext<Editor>,
397 ) {
398 let mouse_position = cx.mouse_position();
399 if !text_hitbox.is_hovered(cx) {
400 return;
401 }
402
403 editor.update_hovered_link(
404 position_map.point_for_position(text_hitbox.bounds, mouse_position),
405 &position_map.snapshot,
406 event.modifiers,
407 cx,
408 )
409 }
410
411 fn mouse_left_down(
412 editor: &mut Editor,
413 event: &MouseDownEvent,
414 position_map: &PositionMap,
415 text_hitbox: &Hitbox,
416 gutter_hitbox: &Hitbox,
417 cx: &mut ViewContext<Editor>,
418 ) {
419 if cx.default_prevented() {
420 return;
421 }
422
423 let mut click_count = event.click_count;
424 let mut modifiers = event.modifiers;
425
426 if gutter_hitbox.is_hovered(cx) {
427 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
428 } else if !text_hitbox.is_hovered(cx) {
429 return;
430 }
431
432 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
433 match EditorSettings::get_global(cx).double_click_in_multibuffer {
434 DoubleClickInMultibuffer::Select => {
435 // do nothing special on double click, all selection logic is below
436 }
437 DoubleClickInMultibuffer::Open => {
438 if modifiers.alt {
439 // if double click is made with alt, pretend it's a regular double click without opening and alt,
440 // and run the selection logic.
441 modifiers.alt = false;
442 } else {
443 // if double click is made without alt, open the corresponding excerp
444 editor.open_excerpts(&OpenExcerpts, cx);
445 return;
446 }
447 }
448 }
449 }
450
451 let point_for_position =
452 position_map.point_for_position(text_hitbox.bounds, event.position);
453 let position = point_for_position.previous_valid;
454 if modifiers.shift && modifiers.alt {
455 editor.select(
456 SelectPhase::BeginColumnar {
457 position,
458 goal_column: point_for_position.exact_unclipped.column(),
459 },
460 cx,
461 );
462 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
463 {
464 editor.select(
465 SelectPhase::Extend {
466 position,
467 click_count,
468 },
469 cx,
470 );
471 } else {
472 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
473 let multi_cursor_modifier = match multi_cursor_setting {
474 MultiCursorModifier::Alt => modifiers.alt,
475 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
476 };
477 editor.select(
478 SelectPhase::Begin {
479 position,
480 add: multi_cursor_modifier,
481 click_count,
482 },
483 cx,
484 );
485 }
486
487 cx.stop_propagation();
488 }
489
490 fn mouse_right_down(
491 editor: &mut Editor,
492 event: &MouseDownEvent,
493 position_map: &PositionMap,
494 text_hitbox: &Hitbox,
495 cx: &mut ViewContext<Editor>,
496 ) {
497 if !text_hitbox.is_hovered(cx) {
498 return;
499 }
500 let point_for_position =
501 position_map.point_for_position(text_hitbox.bounds, event.position);
502 mouse_context_menu::deploy_context_menu(
503 editor,
504 event.position,
505 point_for_position.previous_valid,
506 cx,
507 );
508 cx.stop_propagation();
509 }
510
511 fn mouse_middle_down(
512 editor: &mut Editor,
513 event: &MouseDownEvent,
514 position_map: &PositionMap,
515 text_hitbox: &Hitbox,
516 cx: &mut ViewContext<Editor>,
517 ) {
518 if !text_hitbox.is_hovered(cx) || editor.read_only(cx) {
519 return;
520 }
521
522 if let Some(item) = cx.read_from_primary() {
523 let point_for_position =
524 position_map.point_for_position(text_hitbox.bounds, event.position);
525 let position = point_for_position.previous_valid;
526
527 editor.select(
528 SelectPhase::Begin {
529 position,
530 add: false,
531 click_count: 1,
532 },
533 cx,
534 );
535 editor.insert(item.text(), cx);
536 }
537 }
538
539 fn mouse_up(
540 editor: &mut Editor,
541 event: &MouseUpEvent,
542 position_map: &PositionMap,
543 text_hitbox: &Hitbox,
544 cx: &mut ViewContext<Editor>,
545 ) {
546 let end_selection = editor.has_pending_selection();
547 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
548
549 if end_selection {
550 editor.select(SelectPhase::End, cx);
551 }
552
553 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
554 let multi_cursor_modifier = match multi_cursor_setting {
555 MultiCursorModifier::Alt => event.modifiers.secondary(),
556 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
557 };
558
559 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
560 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
561 editor.handle_click_hovered_link(point, event.modifiers, cx);
562
563 cx.stop_propagation();
564 } else if end_selection {
565 cx.stop_propagation();
566 }
567 }
568
569 fn mouse_dragged(
570 editor: &mut Editor,
571 event: &MouseMoveEvent,
572 position_map: &PositionMap,
573 text_bounds: Bounds<Pixels>,
574 cx: &mut ViewContext<Editor>,
575 ) {
576 if !editor.has_pending_selection() {
577 return;
578 }
579
580 let point_for_position = position_map.point_for_position(text_bounds, event.position);
581 let mut scroll_delta = gpui::Point::<f32>::default();
582 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
583 let top = text_bounds.origin.y + vertical_margin;
584 let bottom = text_bounds.lower_left().y - vertical_margin;
585 if event.position.y < top {
586 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
587 }
588 if event.position.y > bottom {
589 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
590 }
591
592 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
593 let left = text_bounds.origin.x + horizontal_margin;
594 let right = text_bounds.upper_right().x - horizontal_margin;
595 if event.position.x < left {
596 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
597 }
598 if event.position.x > right {
599 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
600 }
601
602 editor.select(
603 SelectPhase::Update {
604 position: point_for_position.previous_valid,
605 goal_column: point_for_position.exact_unclipped.column(),
606 scroll_delta,
607 },
608 cx,
609 );
610 }
611
612 fn mouse_moved(
613 editor: &mut Editor,
614 event: &MouseMoveEvent,
615 position_map: &PositionMap,
616 text_hitbox: &Hitbox,
617 gutter_hitbox: &Hitbox,
618 cx: &mut ViewContext<Editor>,
619 ) {
620 let modifiers = event.modifiers;
621 let gutter_hovered = gutter_hitbox.is_hovered(cx);
622 editor.set_gutter_hovered(gutter_hovered, cx);
623
624 // Don't trigger hover popover if mouse is hovering over context menu
625 if text_hitbox.is_hovered(cx) {
626 let point_for_position =
627 position_map.point_for_position(text_hitbox.bounds, event.position);
628
629 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
630
631 if let Some(point) = point_for_position.as_valid() {
632 hover_at(editor, Some(point), cx);
633 Self::update_visible_cursor(editor, point, position_map, cx);
634 } else {
635 hover_at(editor, None, cx);
636 }
637 } else {
638 editor.hide_hovered_link(cx);
639 hover_at(editor, None, cx);
640 if gutter_hovered {
641 cx.stop_propagation();
642 }
643 }
644 }
645
646 fn update_visible_cursor(
647 editor: &mut Editor,
648 point: DisplayPoint,
649 position_map: &PositionMap,
650 cx: &mut ViewContext<Editor>,
651 ) {
652 let snapshot = &position_map.snapshot;
653 let Some(hub) = editor.collaboration_hub() else {
654 return;
655 };
656 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
657 ..DisplayPoint::new(
658 point.row(),
659 (point.column() + 1).min(snapshot.line_len(point.row())),
660 );
661
662 let range = snapshot
663 .buffer_snapshot
664 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
665 ..snapshot
666 .buffer_snapshot
667 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
668
669 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
670 return;
671 };
672 let key = crate::HoveredCursor {
673 replica_id: selection.replica_id,
674 selection_id: selection.selection.id,
675 };
676 editor.hovered_cursors.insert(
677 key.clone(),
678 cx.spawn(|editor, mut cx| async move {
679 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
680 editor
681 .update(&mut cx, |editor, cx| {
682 editor.hovered_cursors.remove(&key);
683 cx.notify();
684 })
685 .ok();
686 }),
687 );
688 cx.notify()
689 }
690
691 fn layout_selections(
692 &self,
693 start_anchor: Anchor,
694 end_anchor: Anchor,
695 snapshot: &EditorSnapshot,
696 start_row: u32,
697 end_row: u32,
698 cx: &mut WindowContext,
699 ) -> (
700 Vec<(PlayerColor, Vec<SelectionLayout>)>,
701 BTreeMap<u32, bool>,
702 Option<DisplayPoint>,
703 ) {
704 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
705 let mut active_rows = BTreeMap::new();
706 let mut newest_selection_head = None;
707 let editor = self.editor.read(cx);
708
709 if editor.show_local_selections {
710 let mut local_selections: Vec<Selection<Point>> = editor
711 .selections
712 .disjoint_in_range(start_anchor..end_anchor, cx);
713 local_selections.extend(editor.selections.pending(cx));
714 let mut layouts = Vec::new();
715 let newest = editor.selections.newest(cx);
716 for selection in local_selections.drain(..) {
717 let is_empty = selection.start == selection.end;
718 let is_newest = selection == newest;
719
720 let layout = SelectionLayout::new(
721 selection,
722 editor.selections.line_mode,
723 editor.cursor_shape,
724 &snapshot.display_snapshot,
725 is_newest,
726 editor.leader_peer_id.is_none(),
727 None,
728 );
729 if is_newest {
730 newest_selection_head = Some(layout.head);
731 }
732
733 for row in cmp::max(layout.active_rows.start, start_row)
734 ..=cmp::min(layout.active_rows.end, end_row)
735 {
736 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
737 *contains_non_empty_selection |= !is_empty;
738 }
739 layouts.push(layout);
740 }
741
742 let player = if editor.read_only(cx) {
743 cx.theme().players().read_only()
744 } else {
745 self.style.local_player
746 };
747
748 selections.push((player, layouts));
749 }
750
751 if let Some(collaboration_hub) = &editor.collaboration_hub {
752 // When following someone, render the local selections in their color.
753 if let Some(leader_id) = editor.leader_peer_id {
754 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
755 if let Some(participant_index) = collaboration_hub
756 .user_participant_indices(cx)
757 .get(&collaborator.user_id)
758 {
759 if let Some((local_selection_style, _)) = selections.first_mut() {
760 *local_selection_style = cx
761 .theme()
762 .players()
763 .color_for_participant(participant_index.0);
764 }
765 }
766 }
767 }
768
769 let mut remote_selections = HashMap::default();
770 for selection in snapshot.remote_selections_in_range(
771 &(start_anchor..end_anchor),
772 collaboration_hub.as_ref(),
773 cx,
774 ) {
775 let selection_style = Self::get_participant_color(selection.participant_index, cx);
776
777 // Don't re-render the leader's selections, since the local selections
778 // match theirs.
779 if Some(selection.peer_id) == editor.leader_peer_id {
780 continue;
781 }
782 let key = HoveredCursor {
783 replica_id: selection.replica_id,
784 selection_id: selection.selection.id,
785 };
786
787 let is_shown =
788 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
789
790 remote_selections
791 .entry(selection.replica_id)
792 .or_insert((selection_style, Vec::new()))
793 .1
794 .push(SelectionLayout::new(
795 selection.selection,
796 selection.line_mode,
797 selection.cursor_shape,
798 &snapshot.display_snapshot,
799 false,
800 false,
801 if is_shown { selection.user_name } else { None },
802 ));
803 }
804
805 selections.extend(remote_selections.into_values());
806 }
807 (selections, active_rows, newest_selection_head)
808 }
809
810 #[allow(clippy::too_many_arguments)]
811 fn layout_folds(
812 &self,
813 snapshot: &EditorSnapshot,
814 content_origin: gpui::Point<Pixels>,
815 visible_anchor_range: Range<Anchor>,
816 visible_display_row_range: Range<u32>,
817 scroll_pixel_position: gpui::Point<Pixels>,
818 line_height: Pixels,
819 line_layouts: &[LineWithInvisibles],
820 cx: &mut WindowContext,
821 ) -> Vec<FoldLayout> {
822 snapshot
823 .folds_in_range(visible_anchor_range.clone())
824 .filter_map(|fold| {
825 let fold_range = fold.range.clone();
826 let display_range = fold.range.start.to_display_point(&snapshot)
827 ..fold.range.end.to_display_point(&snapshot);
828 debug_assert_eq!(display_range.start.row(), display_range.end.row());
829 let row = display_range.start.row();
830 debug_assert!(row < visible_display_row_range.end);
831 let line_layout = line_layouts
832 .get((row - visible_display_row_range.start) as usize)
833 .map(|l| &l.line)?;
834
835 let start_x = content_origin.x
836 + line_layout.x_for_index(display_range.start.column() as usize)
837 - scroll_pixel_position.x;
838 let start_y = content_origin.y + row as f32 * line_height - scroll_pixel_position.y;
839 let end_x = content_origin.x
840 + line_layout.x_for_index(display_range.end.column() as usize)
841 - scroll_pixel_position.x;
842
843 let fold_bounds = Bounds {
844 origin: point(start_x, start_y),
845 size: size(end_x - start_x, line_height),
846 };
847
848 let mut hover_element = div()
849 .id(fold.id)
850 .size_full()
851 .cursor_pointer()
852 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
853 .on_click(
854 cx.listener_for(&self.editor, move |editor: &mut Editor, _, cx| {
855 editor.unfold_ranges(
856 [fold_range.start..fold_range.end],
857 true,
858 false,
859 cx,
860 );
861 cx.stop_propagation();
862 }),
863 )
864 .into_any();
865 hover_element.prepaint_as_root(fold_bounds.origin, fold_bounds.size.into(), cx);
866 Some(FoldLayout {
867 display_range,
868 hover_element,
869 })
870 })
871 .collect()
872 }
873
874 fn collect_cursors(
875 &self,
876 snapshot: &EditorSnapshot,
877 cx: &mut WindowContext,
878 ) -> Vec<(Anchor, Hsla)> {
879 let editor = self.editor.read(cx);
880 let mut cursors = Vec::<(Anchor, Hsla)>::new();
881 let mut skip_local = false;
882 // Remote cursors
883 if let Some(collaboration_hub) = &editor.collaboration_hub {
884 for remote_selection in snapshot.remote_selections_in_range(
885 &(Anchor::min()..Anchor::max()),
886 collaboration_hub.deref(),
887 cx,
888 ) {
889 let color = Self::get_participant_color(remote_selection.participant_index, cx);
890 cursors.push((remote_selection.selection.head(), color.cursor));
891 if Some(remote_selection.peer_id) == editor.leader_peer_id {
892 skip_local = true;
893 }
894 }
895 }
896 // Local cursors
897 if !skip_local {
898 editor.selections.disjoint.iter().for_each(|selection| {
899 cursors.push((selection.head(), cx.theme().players().local().cursor));
900 });
901 if let Some(ref selection) = editor.selections.pending_anchor() {
902 cursors.push((selection.head(), cx.theme().players().local().cursor));
903 }
904 }
905 cursors
906 }
907
908 #[allow(clippy::too_many_arguments)]
909 fn layout_visible_cursors(
910 &self,
911 snapshot: &EditorSnapshot,
912 selections: &[(PlayerColor, Vec<SelectionLayout>)],
913 visible_display_row_range: Range<u32>,
914 line_layouts: &[LineWithInvisibles],
915 text_hitbox: &Hitbox,
916 content_origin: gpui::Point<Pixels>,
917 scroll_position: gpui::Point<f32>,
918 scroll_pixel_position: gpui::Point<Pixels>,
919 line_height: Pixels,
920 em_width: Pixels,
921 autoscroll_containing_element: bool,
922 cx: &mut WindowContext,
923 ) -> (Vec<CursorLayout>, bool) {
924 let mut autoscroll_bounds = None;
925 let mut non_visible_cursors = false;
926 let cursor_layouts = self.editor.update(cx, |editor, cx| {
927 let mut cursors = Vec::new();
928 for (player_color, selections) in selections {
929 for selection in selections {
930 let cursor_position = selection.head;
931
932 let in_range = visible_display_row_range.contains(&cursor_position.row());
933 if !in_range {
934 non_visible_cursors |= true;
935 }
936
937 if (selection.is_local && !editor.show_local_cursors(cx)) || !in_range {
938 continue;
939 }
940
941 let cursor_row_layout = &line_layouts
942 [(cursor_position.row() - visible_display_row_range.start) as usize]
943 .line;
944 let cursor_column = cursor_position.column() as usize;
945
946 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
947 let mut block_width =
948 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
949 if block_width == Pixels::ZERO {
950 block_width = em_width;
951 }
952 let block_text = if let CursorShape::Block = selection.cursor_shape {
953 snapshot.display_chars_at(cursor_position).next().and_then(
954 |(character, _)| {
955 let text = if character == '\n' {
956 SharedString::from(" ")
957 } else {
958 SharedString::from(character.to_string())
959 };
960 let len = text.len();
961
962 let font = cursor_row_layout
963 .font_id_for_index(cursor_column)
964 .and_then(|cursor_font_id| {
965 cx.text_system().get_font_for_id(cursor_font_id)
966 })
967 .unwrap_or(self.style.text.font());
968
969 cx.text_system()
970 .shape_line(
971 text,
972 cursor_row_layout.font_size,
973 &[TextRun {
974 len,
975 font,
976 color: self.style.background,
977 background_color: None,
978 strikethrough: None,
979 underline: None,
980 }],
981 )
982 .log_err()
983 },
984 )
985 } else {
986 None
987 };
988
989 let x = cursor_character_x - scroll_pixel_position.x;
990 let y = (cursor_position.row() as f32 - scroll_pixel_position.y / line_height)
991 * line_height;
992 if selection.is_newest {
993 editor.pixel_position_of_newest_cursor = Some(point(
994 text_hitbox.origin.x + x + block_width / 2.,
995 text_hitbox.origin.y + y + line_height / 2.,
996 ));
997
998 if autoscroll_containing_element {
999 let top = text_hitbox.origin.y
1000 + (cursor_position.row() as f32 - scroll_position.y - 3.).max(0.)
1001 * line_height;
1002 let left = text_hitbox.origin.x
1003 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1004 .max(0.)
1005 * em_width;
1006
1007 let bottom = text_hitbox.origin.y
1008 + (cursor_position.row() as f32 - scroll_position.y + 4.)
1009 * line_height;
1010 let right = text_hitbox.origin.x
1011 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1012 * em_width;
1013
1014 autoscroll_bounds =
1015 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1016 }
1017 }
1018
1019 let mut cursor = CursorLayout {
1020 color: player_color.cursor,
1021 block_width,
1022 origin: point(x, y),
1023 line_height,
1024 shape: selection.cursor_shape,
1025 block_text,
1026 cursor_name: None,
1027 };
1028 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1029 string: name,
1030 color: self.style.background,
1031 is_top_row: cursor_position.row() == 0,
1032 });
1033 cursor.layout(content_origin, cursor_name, cx);
1034 cursors.push(cursor);
1035 }
1036 }
1037 cursors
1038 });
1039
1040 if let Some(bounds) = autoscroll_bounds {
1041 cx.request_autoscroll(bounds);
1042 }
1043
1044 (cursor_layouts, non_visible_cursors)
1045 }
1046
1047 fn layout_scrollbar(
1048 &self,
1049 snapshot: &EditorSnapshot,
1050 bounds: Bounds<Pixels>,
1051 scroll_position: gpui::Point<f32>,
1052 rows_per_page: f32,
1053 non_visible_cursors: bool,
1054 cx: &mut WindowContext,
1055 ) -> Option<ScrollbarLayout> {
1056 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1057 let show_scrollbars = match scrollbar_settings.show {
1058 ShowScrollbar::Auto => {
1059 let editor = self.editor.read(cx);
1060 let is_singleton = editor.is_singleton(cx);
1061 // Git
1062 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1063 ||
1064 // Buffer Search Results
1065 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1066 ||
1067 // Selected Symbol Occurrences
1068 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1069 ||
1070 // Diagnostics
1071 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
1072 ||
1073 // Cursors out of sight
1074 non_visible_cursors
1075 ||
1076 // Scrollmanager
1077 editor.scroll_manager.scrollbars_visible()
1078 }
1079 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1080 ShowScrollbar::Always => true,
1081 ShowScrollbar::Never => false,
1082 };
1083 if snapshot.mode != EditorMode::Full {
1084 return None;
1085 }
1086
1087 let visible_row_range = scroll_position.y..scroll_position.y + rows_per_page;
1088
1089 // If a drag took place after we started dragging the scrollbar,
1090 // cancel the scrollbar drag.
1091 if cx.has_active_drag() {
1092 self.editor.update(cx, |editor, cx| {
1093 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
1094 });
1095 }
1096
1097 let track_bounds = Bounds::from_corners(
1098 point(self.scrollbar_left(&bounds), bounds.origin.y),
1099 point(bounds.lower_right().x, bounds.lower_left().y),
1100 );
1101
1102 let height = bounds.size.height;
1103 let total_rows = snapshot.max_point().row() as f32 + rows_per_page;
1104 let px_per_row = height / total_rows;
1105 let thumb_height = (rows_per_page * px_per_row).max(ScrollbarLayout::MIN_THUMB_HEIGHT);
1106 let row_height = (height - thumb_height) / snapshot.max_point().row() as f32;
1107
1108 Some(ScrollbarLayout {
1109 hitbox: cx.insert_hitbox(track_bounds, false),
1110 visible_row_range,
1111 row_height,
1112 visible: show_scrollbars,
1113 thumb_height,
1114 })
1115 }
1116
1117 #[allow(clippy::too_many_arguments)]
1118 fn layout_gutter_fold_indicators(
1119 &self,
1120 fold_statuses: Vec<Option<(FoldStatus, u32, bool)>>,
1121 line_height: Pixels,
1122 gutter_dimensions: &GutterDimensions,
1123 gutter_settings: crate::editor_settings::Gutter,
1124 scroll_pixel_position: gpui::Point<Pixels>,
1125 gutter_hitbox: &Hitbox,
1126 cx: &mut WindowContext,
1127 ) -> Vec<Option<AnyElement>> {
1128 let mut indicators = self.editor.update(cx, |editor, cx| {
1129 editor.render_fold_indicators(
1130 fold_statuses,
1131 &self.style,
1132 editor.gutter_hovered,
1133 line_height,
1134 gutter_dimensions.margin,
1135 cx,
1136 )
1137 });
1138
1139 for (ix, fold_indicator) in indicators.iter_mut().enumerate() {
1140 if let Some(fold_indicator) = fold_indicator {
1141 debug_assert!(gutter_settings.folds);
1142 let available_space = size(
1143 AvailableSpace::MinContent,
1144 AvailableSpace::Definite(line_height * 0.55),
1145 );
1146 let fold_indicator_size = fold_indicator.layout_as_root(available_space, cx);
1147
1148 let position = point(
1149 gutter_dimensions.width - gutter_dimensions.right_padding,
1150 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1151 );
1152 let centering_offset = point(
1153 (gutter_dimensions.right_padding + gutter_dimensions.margin
1154 - fold_indicator_size.width)
1155 / 2.,
1156 (line_height - fold_indicator_size.height) / 2.,
1157 );
1158 let origin = gutter_hitbox.origin + position + centering_offset;
1159 fold_indicator.prepaint_as_root(origin, available_space, cx);
1160 }
1161 }
1162
1163 indicators
1164 }
1165
1166 //Folds contained in a hunk are ignored apart from shrinking visual size
1167 //If a fold contains any hunks then that fold line is marked as modified
1168 fn layout_git_gutters(
1169 &self,
1170 display_rows: Range<u32>,
1171 snapshot: &EditorSnapshot,
1172 ) -> Vec<DisplayDiffHunk> {
1173 let buffer_snapshot = &snapshot.buffer_snapshot;
1174
1175 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1176 .to_point(snapshot)
1177 .row;
1178 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1179 .to_point(snapshot)
1180 .row;
1181
1182 buffer_snapshot
1183 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1184 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1185 .dedup()
1186 .collect()
1187 }
1188
1189 #[allow(clippy::too_many_arguments)]
1190 fn layout_inline_blame(
1191 &self,
1192 display_row: u32,
1193 display_snapshot: &DisplaySnapshot,
1194 line_layout: &LineWithInvisibles,
1195 em_width: Pixels,
1196 content_origin: gpui::Point<Pixels>,
1197 scroll_pixel_position: gpui::Point<Pixels>,
1198 line_height: Pixels,
1199 cx: &mut WindowContext,
1200 ) -> Option<AnyElement> {
1201 if !self
1202 .editor
1203 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1204 {
1205 return None;
1206 }
1207
1208 let workspace = self
1209 .editor
1210 .read(cx)
1211 .workspace
1212 .as_ref()
1213 .map(|(w, _)| w.clone());
1214
1215 let display_point = DisplayPoint::new(display_row, 0);
1216 let buffer_row = display_point.to_point(display_snapshot).row;
1217
1218 let blame = self.editor.read(cx).blame.clone()?;
1219 let blame_entry = blame
1220 .update(cx, |blame, cx| {
1221 blame.blame_for_rows([Some(buffer_row)], cx).next()
1222 })
1223 .flatten()?;
1224
1225 let mut element =
1226 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1227
1228 let start_y = content_origin.y
1229 + line_height * (display_row as f32 - scroll_pixel_position.y / line_height);
1230
1231 let start_x = {
1232 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1233
1234 let padded_line_width =
1235 line_layout.line.width + (em_width * INLINE_BLAME_PADDING_EM_WIDTHS);
1236
1237 let min_column = ProjectSettings::get_global(cx)
1238 .git
1239 .inline_blame
1240 .and_then(|settings| settings.min_column)
1241 .map(|col| self.column_pixels(col as usize, cx))
1242 .unwrap_or(px(0.));
1243
1244 (content_origin.x - scroll_pixel_position.x) + max(padded_line_width, min_column)
1245 };
1246
1247 let absolute_offset = point(start_x, start_y);
1248 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1249
1250 element.prepaint_as_root(absolute_offset, available_space, cx);
1251
1252 Some(element)
1253 }
1254
1255 #[allow(clippy::too_many_arguments)]
1256 fn layout_blame_entries(
1257 &self,
1258 buffer_rows: impl Iterator<Item = Option<u32>>,
1259 em_width: Pixels,
1260 scroll_position: gpui::Point<f32>,
1261 line_height: Pixels,
1262 gutter_hitbox: &Hitbox,
1263 max_width: Option<Pixels>,
1264 cx: &mut WindowContext,
1265 ) -> Option<Vec<AnyElement>> {
1266 if !self
1267 .editor
1268 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1269 {
1270 return None;
1271 }
1272
1273 let blame = self.editor.read(cx).blame.clone()?;
1274 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1275 blame.blame_for_rows(buffer_rows, cx).collect()
1276 });
1277
1278 let width = if let Some(max_width) = max_width {
1279 AvailableSpace::Definite(max_width)
1280 } else {
1281 AvailableSpace::MaxContent
1282 };
1283 let scroll_top = scroll_position.y * line_height;
1284 let start_x = em_width * 1;
1285
1286 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1287
1288 let shaped_lines = blamed_rows
1289 .into_iter()
1290 .enumerate()
1291 .flat_map(|(ix, blame_entry)| {
1292 if let Some(blame_entry) = blame_entry {
1293 let mut element = render_blame_entry(
1294 ix,
1295 &blame,
1296 blame_entry,
1297 &self.style,
1298 &mut last_used_color,
1299 self.editor.clone(),
1300 cx,
1301 );
1302
1303 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1304 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1305
1306 element.prepaint_as_root(
1307 absolute_offset,
1308 size(width, AvailableSpace::MinContent),
1309 cx,
1310 );
1311
1312 Some(element)
1313 } else {
1314 None
1315 }
1316 })
1317 .collect();
1318
1319 Some(shaped_lines)
1320 }
1321
1322 fn layout_code_actions_indicator(
1323 &self,
1324 line_height: Pixels,
1325 newest_selection_head: DisplayPoint,
1326 scroll_pixel_position: gpui::Point<Pixels>,
1327 gutter_dimensions: &GutterDimensions,
1328 gutter_hitbox: &Hitbox,
1329 cx: &mut WindowContext,
1330 ) -> Option<AnyElement> {
1331 let mut active = false;
1332 let mut button = None;
1333 self.editor.update(cx, |editor, cx| {
1334 active = matches!(
1335 editor.context_menu.read().as_ref(),
1336 Some(crate::ContextMenu::CodeActions(_))
1337 );
1338 button = editor.render_code_actions_indicator(&self.style, active, cx);
1339 });
1340
1341 let mut button = button?.into_any_element();
1342 let available_space = size(
1343 AvailableSpace::MinContent,
1344 AvailableSpace::Definite(line_height),
1345 );
1346 let indicator_size = button.layout_as_root(available_space, cx);
1347
1348 let blame_width = gutter_dimensions
1349 .git_blame_entries_width
1350 .unwrap_or(Pixels::ZERO);
1351
1352 let mut x = blame_width;
1353 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
1354 - indicator_size.width
1355 - blame_width;
1356 x += available_width / 2.;
1357
1358 let mut y = newest_selection_head.row() as f32 * line_height - scroll_pixel_position.y;
1359 y += (line_height - indicator_size.height) / 2.;
1360
1361 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
1362 Some(button)
1363 }
1364
1365 fn get_participant_color(
1366 participant_index: Option<ParticipantIndex>,
1367 cx: &WindowContext,
1368 ) -> PlayerColor {
1369 if let Some(index) = participant_index {
1370 cx.theme().players().color_for_participant(index.0)
1371 } else {
1372 cx.theme().players().absent()
1373 }
1374 }
1375
1376 fn calculate_relative_line_numbers(
1377 &self,
1378 snapshot: &EditorSnapshot,
1379 rows: &Range<u32>,
1380 relative_to: Option<u32>,
1381 ) -> HashMap<u32, u32> {
1382 let mut relative_rows: HashMap<u32, u32> = Default::default();
1383 let Some(relative_to) = relative_to else {
1384 return relative_rows;
1385 };
1386
1387 let start = rows.start.min(relative_to);
1388 let end = rows.end.max(relative_to);
1389
1390 let buffer_rows = snapshot
1391 .buffer_rows(start)
1392 .take(1 + (end - start) as usize)
1393 .collect::<Vec<_>>();
1394
1395 let head_idx = relative_to - start;
1396 let mut delta = 1;
1397 let mut i = head_idx + 1;
1398 while i < buffer_rows.len() as u32 {
1399 if buffer_rows[i as usize].is_some() {
1400 if rows.contains(&(i + start)) {
1401 relative_rows.insert(i + start, delta);
1402 }
1403 delta += 1;
1404 }
1405 i += 1;
1406 }
1407 delta = 1;
1408 i = head_idx.min(buffer_rows.len() as u32 - 1);
1409 while i > 0 && buffer_rows[i as usize].is_none() {
1410 i -= 1;
1411 }
1412
1413 while i > 0 {
1414 i -= 1;
1415 if buffer_rows[i as usize].is_some() {
1416 if rows.contains(&(i + start)) {
1417 relative_rows.insert(i + start, delta);
1418 }
1419 delta += 1;
1420 }
1421 }
1422
1423 relative_rows
1424 }
1425
1426 fn layout_line_numbers(
1427 &self,
1428 rows: Range<u32>,
1429 buffer_rows: impl Iterator<Item = Option<u32>>,
1430 active_rows: &BTreeMap<u32, bool>,
1431 newest_selection_head: Option<DisplayPoint>,
1432 snapshot: &EditorSnapshot,
1433 cx: &WindowContext,
1434 ) -> (
1435 Vec<Option<ShapedLine>>,
1436 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1437 ) {
1438 let editor = self.editor.read(cx);
1439 let is_singleton = editor.is_singleton(cx);
1440 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1441 let newest = editor.selections.newest::<Point>(cx);
1442 SelectionLayout::new(
1443 newest,
1444 editor.selections.line_mode,
1445 editor.cursor_shape,
1446 &snapshot.display_snapshot,
1447 true,
1448 true,
1449 None,
1450 )
1451 .head
1452 });
1453 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1454 let include_line_numbers =
1455 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full;
1456 let include_fold_statuses =
1457 EditorSettings::get_global(cx).gutter.folds && snapshot.mode == EditorMode::Full;
1458 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1459 let mut fold_statuses = Vec::with_capacity(rows.len());
1460 let mut line_number = String::new();
1461 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1462 let relative_to = if is_relative {
1463 Some(newest_selection_head.row())
1464 } else {
1465 None
1466 };
1467
1468 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
1469
1470 for (ix, row) in buffer_rows.into_iter().enumerate() {
1471 let display_row = rows.start + ix as u32;
1472 let (active, color) = if active_rows.contains_key(&display_row) {
1473 (true, cx.theme().colors().editor_active_line_number)
1474 } else {
1475 (false, cx.theme().colors().editor_line_number)
1476 };
1477 if let Some(buffer_row) = row {
1478 if include_line_numbers {
1479 line_number.clear();
1480 let default_number = buffer_row + 1;
1481 let number = relative_rows
1482 .get(&(ix as u32 + rows.start))
1483 .unwrap_or(&default_number);
1484 write!(&mut line_number, "{}", number).unwrap();
1485 let run = TextRun {
1486 len: line_number.len(),
1487 font: self.style.text.font(),
1488 color,
1489 background_color: None,
1490 underline: None,
1491 strikethrough: None,
1492 };
1493 let shaped_line = cx
1494 .text_system()
1495 .shape_line(line_number.clone().into(), font_size, &[run])
1496 .unwrap();
1497 shaped_line_numbers.push(Some(shaped_line));
1498 }
1499 if include_fold_statuses {
1500 fold_statuses.push(
1501 is_singleton
1502 .then(|| {
1503 snapshot
1504 .fold_for_line(buffer_row)
1505 .map(|fold_status| (fold_status, buffer_row, active))
1506 })
1507 .flatten(),
1508 )
1509 }
1510 } else {
1511 fold_statuses.push(None);
1512 shaped_line_numbers.push(None);
1513 }
1514 }
1515
1516 (shaped_line_numbers, fold_statuses)
1517 }
1518
1519 fn layout_lines(
1520 &self,
1521 rows: Range<u32>,
1522 line_number_layouts: &[Option<ShapedLine>],
1523 snapshot: &EditorSnapshot,
1524 cx: &WindowContext,
1525 ) -> Vec<LineWithInvisibles> {
1526 if rows.start >= rows.end {
1527 return Vec::new();
1528 }
1529
1530 // Show the placeholder when the editor is empty
1531 if snapshot.is_empty() {
1532 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1533 let placeholder_color = cx.theme().colors().text_placeholder;
1534 let placeholder_text = snapshot.placeholder_text();
1535
1536 let placeholder_lines = placeholder_text
1537 .as_ref()
1538 .map_or("", AsRef::as_ref)
1539 .split('\n')
1540 .skip(rows.start as usize)
1541 .chain(iter::repeat(""))
1542 .take(rows.len());
1543 placeholder_lines
1544 .filter_map(move |line| {
1545 let run = TextRun {
1546 len: line.len(),
1547 font: self.style.text.font(),
1548 color: placeholder_color,
1549 background_color: None,
1550 underline: Default::default(),
1551 strikethrough: None,
1552 };
1553 cx.text_system()
1554 .shape_line(line.to_string().into(), font_size, &[run])
1555 .log_err()
1556 })
1557 .map(|line| LineWithInvisibles {
1558 line,
1559 invisibles: Vec::new(),
1560 })
1561 .collect()
1562 } else {
1563 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1564 LineWithInvisibles::from_chunks(
1565 chunks,
1566 &self.style.text,
1567 MAX_LINE_LEN,
1568 rows.len(),
1569 line_number_layouts,
1570 snapshot.mode,
1571 cx,
1572 )
1573 }
1574 }
1575
1576 #[allow(clippy::too_many_arguments)]
1577 fn build_blocks(
1578 &self,
1579 rows: Range<u32>,
1580 snapshot: &EditorSnapshot,
1581 hitbox: &Hitbox,
1582 text_hitbox: &Hitbox,
1583 scroll_width: &mut Pixels,
1584 gutter_dimensions: &GutterDimensions,
1585 em_width: Pixels,
1586 text_x: Pixels,
1587 line_height: Pixels,
1588 line_layouts: &[LineWithInvisibles],
1589 cx: &mut WindowContext,
1590 ) -> Vec<BlockLayout> {
1591 let mut block_id = 0;
1592 let (fixed_blocks, non_fixed_blocks) = snapshot
1593 .blocks_in_range(rows.clone())
1594 .partition::<Vec<_>, _>(|(_, block)| match block {
1595 TransformBlock::ExcerptHeader { .. } => false,
1596 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1597 });
1598
1599 let render_block = |block: &TransformBlock,
1600 available_space: Size<AvailableSpace>,
1601 block_id: usize,
1602 block_row_start: u32,
1603 cx: &mut WindowContext| {
1604 let mut element = match block {
1605 TransformBlock::Custom(block) => {
1606 let align_to = block
1607 .position()
1608 .to_point(&snapshot.buffer_snapshot)
1609 .to_display_point(snapshot);
1610 let anchor_x = text_x
1611 + if rows.contains(&align_to.row()) {
1612 line_layouts[(align_to.row() - rows.start) as usize]
1613 .line
1614 .x_for_index(align_to.column() as usize)
1615 } else {
1616 layout_line(align_to.row(), snapshot, &self.style, cx)
1617 .unwrap()
1618 .x_for_index(align_to.column() as usize)
1619 };
1620
1621 block.render(&mut BlockContext {
1622 context: cx,
1623 anchor_x,
1624 gutter_dimensions,
1625 line_height,
1626 em_width,
1627 block_id,
1628 max_width: text_hitbox.size.width.max(*scroll_width),
1629 editor_style: &self.style,
1630 })
1631 }
1632
1633 TransformBlock::ExcerptHeader {
1634 buffer,
1635 range,
1636 starts_new_buffer,
1637 height,
1638 id,
1639 ..
1640 } => {
1641 let include_root = self
1642 .editor
1643 .read(cx)
1644 .project
1645 .as_ref()
1646 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1647 .unwrap_or_default();
1648
1649 #[derive(Clone)]
1650 struct JumpData {
1651 position: Point,
1652 anchor: text::Anchor,
1653 path: ProjectPath,
1654 line_offset_from_top: u32,
1655 }
1656
1657 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
1658 let jump_path = ProjectPath {
1659 worktree_id: file.worktree_id(cx),
1660 path: file.path.clone(),
1661 };
1662 let jump_anchor = range
1663 .primary
1664 .as_ref()
1665 .map_or(range.context.start, |primary| primary.start);
1666
1667 let excerpt_start = range.context.start;
1668 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
1669 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
1670 0
1671 } else {
1672 let excerpt_start_row =
1673 language::ToPoint::to_point(&jump_anchor, buffer).row;
1674 jump_position.row - excerpt_start_row
1675 };
1676
1677 let line_offset_from_top =
1678 block_row_start + *height as u32 + offset_from_excerpt_start
1679 - snapshot
1680 .scroll_anchor
1681 .scroll_position(&snapshot.display_snapshot)
1682 .y as u32;
1683
1684 JumpData {
1685 position: jump_position,
1686 anchor: jump_anchor,
1687 path: jump_path,
1688 line_offset_from_top,
1689 }
1690 });
1691
1692 let element = if *starts_new_buffer {
1693 let path = buffer.resolve_file_path(cx, include_root);
1694 let mut filename = None;
1695 let mut parent_path = None;
1696 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
1697 if let Some(path) = path {
1698 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
1699 parent_path = path
1700 .parent()
1701 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
1702 }
1703
1704 v_flex()
1705 .id(("path header container", block_id))
1706 .size_full()
1707 .justify_center()
1708 .p(gpui::px(6.))
1709 .child(
1710 h_flex()
1711 .id("path header block")
1712 .size_full()
1713 .pl(gpui::px(12.))
1714 .pr(gpui::px(8.))
1715 .rounded_md()
1716 .shadow_md()
1717 .border()
1718 .border_color(cx.theme().colors().border)
1719 .bg(cx.theme().colors().editor_subheader_background)
1720 .justify_between()
1721 .hover(|style| style.bg(cx.theme().colors().element_hover))
1722 .child(
1723 h_flex().gap_3().child(
1724 h_flex()
1725 .gap_2()
1726 .child(
1727 filename
1728 .map(SharedString::from)
1729 .unwrap_or_else(|| "untitled".into()),
1730 )
1731 .when_some(parent_path, |then, path| {
1732 then.child(
1733 div().child(path).text_color(
1734 cx.theme().colors().text_muted,
1735 ),
1736 )
1737 }),
1738 ),
1739 )
1740 .when_some(jump_data.clone(), |this, jump_data| {
1741 this.cursor_pointer()
1742 .tooltip(|cx| {
1743 Tooltip::for_action(
1744 "Jump to File",
1745 &OpenExcerpts,
1746 cx,
1747 )
1748 })
1749 .on_mouse_down(MouseButton::Left, |_, cx| {
1750 cx.stop_propagation()
1751 })
1752 .on_click(cx.listener_for(&self.editor, {
1753 move |editor, _, cx| {
1754 editor.jump(
1755 jump_data.path.clone(),
1756 jump_data.position,
1757 jump_data.anchor,
1758 jump_data.line_offset_from_top,
1759 cx,
1760 );
1761 }
1762 }))
1763 }),
1764 )
1765 } else {
1766 v_flex()
1767 .id(("collapsed context", block_id))
1768 .size_full()
1769 .child(
1770 div()
1771 .flex()
1772 .v_flex()
1773 .justify_start()
1774 .id("jump to collapsed context")
1775 .w(relative(1.0))
1776 .h_full()
1777 .child(
1778 div()
1779 .h_px()
1780 .w_full()
1781 .bg(cx.theme().colors().border_variant)
1782 .group_hover("excerpt-jump-action", |style| {
1783 style.bg(cx.theme().colors().border)
1784 }),
1785 ),
1786 )
1787 .child(
1788 h_flex()
1789 .justify_end()
1790 .flex_none()
1791 .w(
1792 gutter_dimensions.width - (gutter_dimensions.left_padding), // + gutter_dimensions.right_padding)
1793 )
1794 .h_full()
1795 .child(
1796 ButtonLike::new("expand-icon")
1797 .style(ButtonStyle::Transparent)
1798 .child(
1799 svg()
1800 .path(IconName::ExpandVertical.path())
1801 .size(IconSize::XSmall.rems())
1802 .text_color(
1803 cx.theme().colors().editor_line_number,
1804 )
1805 .group("")
1806 .hover(|style| {
1807 style.text_color(
1808 cx.theme()
1809 .colors()
1810 .editor_active_line_number,
1811 )
1812 }),
1813 )
1814 .on_click(cx.listener_for(&self.editor, {
1815 let id = *id;
1816 move |editor, _, cx| {
1817 editor.expand_excerpt(id, cx);
1818 }
1819 }))
1820 .tooltip({
1821 move |cx| {
1822 Tooltip::for_action(
1823 "Expand Excerpt",
1824 &ExpandExcerpts { lines: 0 },
1825 cx,
1826 )
1827 }
1828 }),
1829 ),
1830 )
1831 .group("excerpt-jump-action")
1832 .cursor_pointer()
1833 .when_some(jump_data.clone(), |this, jump_data| {
1834 this.on_click(cx.listener_for(&self.editor, {
1835 let path = jump_data.path.clone();
1836 move |editor, _, cx| {
1837 cx.stop_propagation();
1838
1839 editor.jump(
1840 path.clone(),
1841 jump_data.position,
1842 jump_data.anchor,
1843 jump_data.line_offset_from_top,
1844 cx,
1845 );
1846 }
1847 }))
1848 .tooltip(move |cx| {
1849 Tooltip::for_action(
1850 format!(
1851 "Jump to {}:L{}",
1852 jump_data.path.path.display(),
1853 jump_data.position.row + 1
1854 ),
1855 &OpenExcerpts,
1856 cx,
1857 )
1858 })
1859 })
1860 };
1861 element.into_any()
1862 }
1863 };
1864
1865 let size = element.layout_as_root(available_space, cx);
1866 (element, size)
1867 };
1868
1869 let mut fixed_block_max_width = Pixels::ZERO;
1870 let mut blocks = Vec::new();
1871 for (row, block) in fixed_blocks {
1872 let available_space = size(
1873 AvailableSpace::MinContent,
1874 AvailableSpace::Definite(block.height() as f32 * line_height),
1875 );
1876 let (element, element_size) = render_block(block, available_space, block_id, row, cx);
1877 block_id += 1;
1878 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
1879 blocks.push(BlockLayout {
1880 row,
1881 element,
1882 available_space,
1883 style: BlockStyle::Fixed,
1884 });
1885 }
1886 for (row, block) in non_fixed_blocks {
1887 let style = match block {
1888 TransformBlock::Custom(block) => block.style(),
1889 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
1890 };
1891 let width = match style {
1892 BlockStyle::Sticky => hitbox.size.width,
1893 BlockStyle::Flex => hitbox
1894 .size
1895 .width
1896 .max(fixed_block_max_width)
1897 .max(gutter_dimensions.width + *scroll_width),
1898 BlockStyle::Fixed => unreachable!(),
1899 };
1900 let available_space = size(
1901 AvailableSpace::Definite(width),
1902 AvailableSpace::Definite(block.height() as f32 * line_height),
1903 );
1904 let (element, _) = render_block(block, available_space, block_id, row, cx);
1905 block_id += 1;
1906 blocks.push(BlockLayout {
1907 row,
1908 element,
1909 available_space,
1910 style,
1911 });
1912 }
1913
1914 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
1915 blocks
1916 }
1917
1918 fn layout_blocks(
1919 &self,
1920 blocks: &mut Vec<BlockLayout>,
1921 hitbox: &Hitbox,
1922 line_height: Pixels,
1923 scroll_pixel_position: gpui::Point<Pixels>,
1924 cx: &mut WindowContext,
1925 ) {
1926 for block in blocks {
1927 let mut origin = hitbox.origin
1928 + point(
1929 Pixels::ZERO,
1930 block.row as f32 * line_height - scroll_pixel_position.y,
1931 );
1932 if !matches!(block.style, BlockStyle::Sticky) {
1933 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
1934 }
1935 block
1936 .element
1937 .prepaint_as_root(origin, block.available_space, cx);
1938 }
1939 }
1940
1941 #[allow(clippy::too_many_arguments)]
1942 fn layout_context_menu(
1943 &self,
1944 line_height: Pixels,
1945 hitbox: &Hitbox,
1946 text_hitbox: &Hitbox,
1947 content_origin: gpui::Point<Pixels>,
1948 start_row: u32,
1949 scroll_pixel_position: gpui::Point<Pixels>,
1950 line_layouts: &[LineWithInvisibles],
1951 newest_selection_head: DisplayPoint,
1952 cx: &mut WindowContext,
1953 ) -> bool {
1954 let max_height = cmp::min(
1955 12. * line_height,
1956 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
1957 );
1958 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
1959 if editor.context_menu_visible() {
1960 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
1961 } else {
1962 None
1963 }
1964 }) else {
1965 return false;
1966 };
1967
1968 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1969 let context_menu_size = context_menu.layout_as_root(available_space, cx);
1970
1971 let cursor_row_layout = &line_layouts[(position.row() - start_row) as usize].line;
1972 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1973 let y = (position.row() + 1) as f32 * line_height - scroll_pixel_position.y;
1974 let mut list_origin = content_origin + point(x, y);
1975 let list_width = context_menu_size.width;
1976 let list_height = context_menu_size.height;
1977
1978 // Snap the right edge of the list to the right edge of the window if
1979 // its horizontal bounds overflow.
1980 if list_origin.x + list_width > cx.viewport_size().width {
1981 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1982 }
1983
1984 if list_origin.y + list_height > text_hitbox.lower_right().y {
1985 list_origin.y -= line_height + list_height;
1986 }
1987
1988 cx.defer_draw(context_menu, list_origin, 1);
1989 true
1990 }
1991
1992 fn layout_mouse_context_menu(&self, cx: &mut WindowContext) -> Option<AnyElement> {
1993 let mouse_context_menu = self.editor.read(cx).mouse_context_menu.as_ref()?;
1994 let mut element = deferred(
1995 anchored()
1996 .position(mouse_context_menu.position)
1997 .child(mouse_context_menu.context_menu.clone())
1998 .anchor(AnchorCorner::TopLeft)
1999 .snap_to_window(),
2000 )
2001 .with_priority(1)
2002 .into_any();
2003
2004 element.prepaint_as_root(gpui::Point::default(), AvailableSpace::min_size(), cx);
2005 Some(element)
2006 }
2007
2008 #[allow(clippy::too_many_arguments)]
2009 fn layout_hover_popovers(
2010 &self,
2011 snapshot: &EditorSnapshot,
2012 hitbox: &Hitbox,
2013 text_hitbox: &Hitbox,
2014 visible_display_row_range: Range<u32>,
2015 content_origin: gpui::Point<Pixels>,
2016 scroll_pixel_position: gpui::Point<Pixels>,
2017 line_layouts: &[LineWithInvisibles],
2018 line_height: Pixels,
2019 em_width: Pixels,
2020 cx: &mut WindowContext,
2021 ) {
2022 struct MeasuredHoverPopover {
2023 element: AnyElement,
2024 size: Size<Pixels>,
2025 horizontal_offset: Pixels,
2026 }
2027
2028 let max_size = size(
2029 (120. * em_width) // Default size
2030 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
2031 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2032 (16. * line_height) // Default size
2033 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
2034 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2035 );
2036
2037 let hover_popovers = self.editor.update(cx, |editor, cx| {
2038 editor.hover_state.render(
2039 &snapshot,
2040 &self.style,
2041 visible_display_row_range.clone(),
2042 max_size,
2043 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2044 cx,
2045 )
2046 });
2047 let Some((position, hover_popovers)) = hover_popovers else {
2048 return;
2049 };
2050
2051 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
2052
2053 // This is safe because we check on layout whether the required row is available
2054 let hovered_row_layout =
2055 &line_layouts[(position.row() - visible_display_row_range.start) as usize].line;
2056
2057 // Compute Hovered Point
2058 let x =
2059 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
2060 let y = position.row() as f32 * line_height - scroll_pixel_position.y;
2061 let hovered_point = content_origin + point(x, y);
2062
2063 let mut overall_height = Pixels::ZERO;
2064 let mut measured_hover_popovers = Vec::new();
2065 for mut hover_popover in hover_popovers {
2066 let size = hover_popover.layout_as_root(available_space, cx);
2067 let horizontal_offset =
2068 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
2069
2070 overall_height += HOVER_POPOVER_GAP + size.height;
2071
2072 measured_hover_popovers.push(MeasuredHoverPopover {
2073 element: hover_popover,
2074 size,
2075 horizontal_offset,
2076 });
2077 }
2078 overall_height += HOVER_POPOVER_GAP;
2079
2080 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
2081 let mut occlusion = div()
2082 .size_full()
2083 .occlude()
2084 .on_mouse_move(|_, cx| cx.stop_propagation())
2085 .into_any_element();
2086 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
2087 cx.defer_draw(occlusion, origin, 2);
2088 }
2089
2090 if hovered_point.y > overall_height {
2091 // There is enough space above. Render popovers above the hovered point
2092 let mut current_y = hovered_point.y;
2093 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2094 let size = popover.size;
2095 let popover_origin = point(
2096 hovered_point.x + popover.horizontal_offset,
2097 current_y - size.height,
2098 );
2099
2100 cx.defer_draw(popover.element, popover_origin, 2);
2101 if position != itertools::Position::Last {
2102 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
2103 draw_occluder(size.width, origin, cx);
2104 }
2105
2106 current_y = popover_origin.y - HOVER_POPOVER_GAP;
2107 }
2108 } else {
2109 // There is not enough space above. Render popovers below the hovered point
2110 let mut current_y = hovered_point.y + line_height;
2111 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
2112 let size = popover.size;
2113 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
2114
2115 cx.defer_draw(popover.element, popover_origin, 2);
2116 if position != itertools::Position::Last {
2117 let origin = point(popover_origin.x, popover_origin.y + size.height);
2118 draw_occluder(size.width, origin, cx);
2119 }
2120
2121 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
2122 }
2123 }
2124 }
2125
2126 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
2127 cx.paint_layer(layout.hitbox.bounds, |cx| {
2128 let scroll_top = layout.position_map.snapshot.scroll_position().y;
2129 let gutter_bg = cx.theme().colors().editor_gutter_background;
2130 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
2131 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
2132
2133 if let EditorMode::Full = layout.mode {
2134 let mut active_rows = layout.active_rows.iter().peekable();
2135 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
2136 let mut end_row = *start_row;
2137 while active_rows.peek().map_or(false, |r| {
2138 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
2139 }) {
2140 active_rows.next().unwrap();
2141 end_row += 1;
2142 }
2143
2144 if !contains_non_empty_selection {
2145 let origin = point(
2146 layout.hitbox.origin.x,
2147 layout.hitbox.origin.y
2148 + (*start_row as f32 - scroll_top)
2149 * layout.position_map.line_height,
2150 );
2151 let size = size(
2152 layout.hitbox.size.width,
2153 layout.position_map.line_height * (end_row - start_row + 1) as f32,
2154 );
2155 let active_line_bg = cx.theme().colors().editor_active_line_background;
2156 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
2157 }
2158 }
2159
2160 let mut paint_highlight =
2161 |highlight_row_start: u32, highlight_row_end: u32, color| {
2162 let origin = point(
2163 layout.hitbox.origin.x,
2164 layout.hitbox.origin.y
2165 + (highlight_row_start as f32 - scroll_top)
2166 * layout.position_map.line_height,
2167 );
2168 let size = size(
2169 layout.hitbox.size.width,
2170 layout.position_map.line_height
2171 * (highlight_row_end + 1 - highlight_row_start) as f32,
2172 );
2173 cx.paint_quad(fill(Bounds { origin, size }, color));
2174 };
2175
2176 let mut last_row = None;
2177 let mut highlight_row_start = 0u32;
2178 let mut highlight_row_end = 0u32;
2179 for (&row, &color) in &layout.highlighted_rows {
2180 let paint = last_row.map_or(false, |(last_row, last_color)| {
2181 last_color != color || last_row + 1 < row
2182 });
2183
2184 if paint {
2185 let paint_range_is_unfinished = highlight_row_end == 0;
2186 if paint_range_is_unfinished {
2187 highlight_row_end = row;
2188 last_row = None;
2189 }
2190 paint_highlight(highlight_row_start, highlight_row_end, color);
2191 highlight_row_start = 0;
2192 highlight_row_end = 0;
2193 if !paint_range_is_unfinished {
2194 highlight_row_start = row;
2195 last_row = Some((row, color));
2196 }
2197 } else {
2198 if last_row.is_none() {
2199 highlight_row_start = row;
2200 } else {
2201 highlight_row_end = row;
2202 }
2203 last_row = Some((row, color));
2204 }
2205 }
2206 if let Some((row, hsla)) = last_row {
2207 highlight_row_end = row;
2208 paint_highlight(highlight_row_start, highlight_row_end, hsla);
2209 }
2210
2211 let scroll_left =
2212 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
2213
2214 for (wrap_position, active) in layout.wrap_guides.iter() {
2215 let x = (layout.text_hitbox.origin.x
2216 + *wrap_position
2217 + layout.position_map.em_width / 2.)
2218 - scroll_left;
2219
2220 let show_scrollbars = layout
2221 .scrollbar_layout
2222 .as_ref()
2223 .map_or(false, |scrollbar| scrollbar.visible);
2224 if x < layout.text_hitbox.origin.x
2225 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
2226 {
2227 continue;
2228 }
2229
2230 let color = if *active {
2231 cx.theme().colors().editor_active_wrap_guide
2232 } else {
2233 cx.theme().colors().editor_wrap_guide
2234 };
2235 cx.paint_quad(fill(
2236 Bounds {
2237 origin: point(x, layout.text_hitbox.origin.y),
2238 size: size(px(1.), layout.text_hitbox.size.height),
2239 },
2240 color,
2241 ));
2242 }
2243 }
2244 })
2245 }
2246
2247 fn paint_gutter(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2248 let line_height = layout.position_map.line_height;
2249
2250 let scroll_position = layout.position_map.snapshot.scroll_position();
2251 let scroll_top = scroll_position.y * line_height;
2252
2253 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
2254
2255 let show_git_gutter = matches!(
2256 ProjectSettings::get_global(cx).git.git_gutter,
2257 Some(GitGutterSetting::TrackedFiles)
2258 );
2259
2260 if show_git_gutter {
2261 Self::paint_diff_hunks(layout, cx);
2262 }
2263
2264 if layout.blamed_display_rows.is_some() {
2265 self.paint_blamed_display_rows(layout, cx);
2266 }
2267
2268 for (ix, line) in layout.line_numbers.iter().enumerate() {
2269 if let Some(line) = line {
2270 let line_origin = layout.gutter_hitbox.origin
2271 + point(
2272 layout.gutter_hitbox.size.width
2273 - line.width
2274 - layout.gutter_dimensions.right_padding,
2275 ix as f32 * line_height - (scroll_top % line_height),
2276 );
2277
2278 line.paint(line_origin, line_height, cx).log_err();
2279 }
2280 }
2281
2282 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2283 cx.with_element_namespace("gutter_fold_indicators", |cx| {
2284 for fold_indicator in layout.fold_indicators.iter_mut().flatten() {
2285 fold_indicator.paint(cx);
2286 }
2287 });
2288
2289 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
2290 indicator.paint(cx);
2291 }
2292 })
2293 }
2294
2295 fn paint_diff_hunks(layout: &EditorLayout, cx: &mut WindowContext) {
2296 if layout.display_hunks.is_empty() {
2297 return;
2298 }
2299
2300 let line_height = layout.position_map.line_height;
2301
2302 let scroll_position = layout.position_map.snapshot.scroll_position();
2303 let scroll_top = scroll_position.y * line_height;
2304
2305 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2306 for hunk in &layout.display_hunks {
2307 let (display_row_range, status) = match hunk {
2308 //TODO: This rendering is entirely a horrible hack
2309 &DisplayDiffHunk::Folded { display_row: row } => {
2310 let start_y = row as f32 * line_height - scroll_top;
2311 let end_y = start_y + line_height;
2312
2313 let width = 0.275 * line_height;
2314 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2315 let highlight_size = size(width * 2., end_y - start_y);
2316 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2317 cx.paint_quad(quad(
2318 highlight_bounds,
2319 Corners::all(1. * line_height),
2320 cx.theme().status().modified,
2321 Edges::default(),
2322 transparent_black(),
2323 ));
2324
2325 continue;
2326 }
2327
2328 DisplayDiffHunk::Unfolded {
2329 display_row_range,
2330 status,
2331 } => (display_row_range, status),
2332 };
2333
2334 let color = match status {
2335 DiffHunkStatus::Added => cx.theme().status().created,
2336 DiffHunkStatus::Modified => cx.theme().status().modified,
2337
2338 //TODO: This rendering is entirely a horrible hack
2339 DiffHunkStatus::Removed => {
2340 let row = display_row_range.start;
2341
2342 let offset = line_height / 2.;
2343 let start_y = row as f32 * line_height - offset - scroll_top;
2344 let end_y = start_y + line_height;
2345
2346 let width = 0.275 * line_height;
2347 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2348 let highlight_size = size(width * 2., end_y - start_y);
2349 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2350 cx.paint_quad(quad(
2351 highlight_bounds,
2352 Corners::all(1. * line_height),
2353 cx.theme().status().deleted,
2354 Edges::default(),
2355 transparent_black(),
2356 ));
2357
2358 continue;
2359 }
2360 };
2361
2362 let start_row = display_row_range.start;
2363 let end_row = display_row_range.end;
2364 // If we're in a multibuffer, row range span might include an
2365 // excerpt header, so if we were to draw the marker straight away,
2366 // the hunk might include the rows of that header.
2367 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
2368 // Instead, we simply check whether the range we're dealing with includes
2369 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
2370 let end_row_in_current_excerpt = layout
2371 .position_map
2372 .snapshot
2373 .blocks_in_range(start_row..end_row)
2374 .find_map(|(start_row, block)| {
2375 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
2376 Some(start_row)
2377 } else {
2378 None
2379 }
2380 })
2381 .unwrap_or(end_row);
2382
2383 let start_y = start_row as f32 * line_height - scroll_top;
2384 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
2385
2386 let width = 0.275 * line_height;
2387 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2388 let highlight_size = size(width * 2., end_y - start_y);
2389 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2390 cx.paint_quad(quad(
2391 highlight_bounds,
2392 Corners::all(0.05 * line_height),
2393 color,
2394 Edges::default(),
2395 transparent_black(),
2396 ));
2397 }
2398 })
2399 }
2400
2401 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2402 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
2403 return;
2404 };
2405
2406 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2407 for mut blame_element in blamed_display_rows.into_iter() {
2408 blame_element.paint(cx);
2409 }
2410 })
2411 }
2412
2413 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2414 cx.with_content_mask(
2415 Some(ContentMask {
2416 bounds: layout.text_hitbox.bounds,
2417 }),
2418 |cx| {
2419 let cursor_style = if self
2420 .editor
2421 .read(cx)
2422 .hovered_link_state
2423 .as_ref()
2424 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
2425 {
2426 CursorStyle::PointingHand
2427 } else {
2428 CursorStyle::IBeam
2429 };
2430 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
2431
2432 cx.with_element_namespace("folds", |cx| self.paint_folds(layout, cx));
2433 let invisible_display_ranges = self.paint_highlights(layout, cx);
2434 self.paint_lines(&invisible_display_ranges, layout, cx);
2435 self.paint_redactions(layout, cx);
2436 self.paint_cursors(layout, cx);
2437 self.paint_inline_blame(layout, cx);
2438 },
2439 )
2440 }
2441
2442 fn paint_highlights(
2443 &mut self,
2444 layout: &mut EditorLayout,
2445 cx: &mut WindowContext,
2446 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
2447 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2448 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
2449 let line_end_overshoot = 0.15 * layout.position_map.line_height;
2450 for (range, color) in &layout.highlighted_ranges {
2451 self.paint_highlighted_range(
2452 range.clone(),
2453 *color,
2454 Pixels::ZERO,
2455 line_end_overshoot,
2456 layout,
2457 cx,
2458 );
2459 }
2460
2461 let corner_radius = 0.15 * layout.position_map.line_height;
2462
2463 for (player_color, selections) in &layout.selections {
2464 for selection in selections.into_iter() {
2465 self.paint_highlighted_range(
2466 selection.range.clone(),
2467 player_color.selection,
2468 corner_radius,
2469 corner_radius * 2.,
2470 layout,
2471 cx,
2472 );
2473
2474 if selection.is_local && !selection.range.is_empty() {
2475 invisible_display_ranges.push(selection.range.clone());
2476 }
2477 }
2478 }
2479 invisible_display_ranges
2480 })
2481 }
2482
2483 fn paint_lines(
2484 &mut self,
2485 invisible_display_ranges: &[Range<DisplayPoint>],
2486 layout: &EditorLayout,
2487 cx: &mut WindowContext,
2488 ) {
2489 let whitespace_setting = self
2490 .editor
2491 .read(cx)
2492 .buffer
2493 .read(cx)
2494 .settings_at(0, cx)
2495 .show_whitespaces;
2496
2497 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
2498 let row = layout.visible_display_row_range.start + ix as u32;
2499 line_with_invisibles.draw(
2500 layout,
2501 row,
2502 layout.content_origin,
2503 whitespace_setting,
2504 invisible_display_ranges,
2505 cx,
2506 )
2507 }
2508 }
2509
2510 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
2511 if layout.redacted_ranges.is_empty() {
2512 return;
2513 }
2514
2515 let line_end_overshoot = layout.line_end_overshoot();
2516
2517 // A softer than perfect black
2518 let redaction_color = gpui::rgb(0x0e1111);
2519
2520 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2521 for range in layout.redacted_ranges.iter() {
2522 self.paint_highlighted_range(
2523 range.clone(),
2524 redaction_color.into(),
2525 Pixels::ZERO,
2526 line_end_overshoot,
2527 layout,
2528 cx,
2529 );
2530 }
2531 });
2532 }
2533
2534 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2535 for cursor in &mut layout.visible_cursors {
2536 cursor.paint(layout.content_origin, cx);
2537 }
2538 }
2539
2540 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2541 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
2542 return;
2543 };
2544
2545 let thumb_bounds = scrollbar_layout.thumb_bounds();
2546 if scrollbar_layout.visible {
2547 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
2548 cx.paint_quad(quad(
2549 scrollbar_layout.hitbox.bounds,
2550 Corners::default(),
2551 cx.theme().colors().scrollbar_track_background,
2552 Edges {
2553 top: Pixels::ZERO,
2554 right: Pixels::ZERO,
2555 bottom: Pixels::ZERO,
2556 left: ScrollbarLayout::BORDER_WIDTH,
2557 },
2558 cx.theme().colors().scrollbar_track_border,
2559 ));
2560
2561 let fast_markers =
2562 self.collect_fast_scrollbar_markers(layout, scrollbar_layout, cx);
2563 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
2564 self.refresh_slow_scrollbar_markers(layout, scrollbar_layout, cx);
2565
2566 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
2567 for marker in markers.iter().chain(&fast_markers) {
2568 let mut marker = marker.clone();
2569 marker.bounds.origin += scrollbar_layout.hitbox.origin;
2570 cx.paint_quad(marker);
2571 }
2572
2573 cx.paint_quad(quad(
2574 thumb_bounds,
2575 Corners::default(),
2576 cx.theme().colors().scrollbar_thumb_background,
2577 Edges {
2578 top: Pixels::ZERO,
2579 right: Pixels::ZERO,
2580 bottom: Pixels::ZERO,
2581 left: ScrollbarLayout::BORDER_WIDTH,
2582 },
2583 cx.theme().colors().scrollbar_thumb_border,
2584 ));
2585 });
2586 }
2587
2588 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
2589
2590 let row_height = scrollbar_layout.row_height;
2591 let row_range = scrollbar_layout.visible_row_range.clone();
2592
2593 cx.on_mouse_event({
2594 let editor = self.editor.clone();
2595 let hitbox = scrollbar_layout.hitbox.clone();
2596 let mut mouse_position = cx.mouse_position();
2597 move |event: &MouseMoveEvent, phase, cx| {
2598 if phase == DispatchPhase::Capture {
2599 return;
2600 }
2601
2602 editor.update(cx, |editor, cx| {
2603 if event.pressed_button == Some(MouseButton::Left)
2604 && editor.scroll_manager.is_dragging_scrollbar()
2605 {
2606 let y = mouse_position.y;
2607 let new_y = event.position.y;
2608 if (hitbox.top()..hitbox.bottom()).contains(&y) {
2609 let mut position = editor.scroll_position(cx);
2610 position.y += (new_y - y) / row_height;
2611 if position.y < 0.0 {
2612 position.y = 0.0;
2613 }
2614 editor.set_scroll_position(position, cx);
2615 }
2616
2617 cx.stop_propagation();
2618 } else {
2619 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2620 if hitbox.is_hovered(cx) {
2621 editor.scroll_manager.show_scrollbar(cx);
2622 }
2623 }
2624 mouse_position = event.position;
2625 })
2626 }
2627 });
2628
2629 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
2630 cx.on_mouse_event({
2631 let editor = self.editor.clone();
2632 move |_: &MouseUpEvent, phase, cx| {
2633 if phase == DispatchPhase::Capture {
2634 return;
2635 }
2636
2637 editor.update(cx, |editor, cx| {
2638 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2639 cx.stop_propagation();
2640 });
2641 }
2642 });
2643 } else {
2644 cx.on_mouse_event({
2645 let editor = self.editor.clone();
2646 let hitbox = scrollbar_layout.hitbox.clone();
2647 move |event: &MouseDownEvent, phase, cx| {
2648 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
2649 return;
2650 }
2651
2652 editor.update(cx, |editor, cx| {
2653 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
2654
2655 let y = event.position.y;
2656 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
2657 let center_row = ((y - hitbox.top()) / row_height).round() as u32;
2658 let top_row = center_row
2659 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
2660 let mut position = editor.scroll_position(cx);
2661 position.y = top_row as f32;
2662 editor.set_scroll_position(position, cx);
2663 } else {
2664 editor.scroll_manager.show_scrollbar(cx);
2665 }
2666
2667 cx.stop_propagation();
2668 });
2669 }
2670 });
2671 }
2672 }
2673
2674 fn collect_fast_scrollbar_markers(
2675 &self,
2676 layout: &EditorLayout,
2677 scrollbar_layout: &ScrollbarLayout,
2678 cx: &mut WindowContext,
2679 ) -> Vec<PaintQuad> {
2680 const LIMIT: usize = 100;
2681 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
2682 return vec![];
2683 }
2684 let cursor_ranges = layout
2685 .cursors
2686 .iter()
2687 .map(|cursor| {
2688 let point = cursor
2689 .0
2690 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2691 ColoredRange {
2692 start: point.row(),
2693 end: point.row(),
2694 color: cursor.1,
2695 }
2696 })
2697 .collect_vec();
2698 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
2699 }
2700
2701 fn refresh_slow_scrollbar_markers(
2702 &self,
2703 layout: &EditorLayout,
2704 scrollbar_layout: &ScrollbarLayout,
2705 cx: &mut WindowContext,
2706 ) {
2707 self.editor.update(cx, |editor, cx| {
2708 if !editor.is_singleton(cx)
2709 || !editor
2710 .scrollbar_marker_state
2711 .should_refresh(scrollbar_layout.hitbox.size)
2712 {
2713 return;
2714 }
2715
2716 let scrollbar_layout = scrollbar_layout.clone();
2717 let background_highlights = editor.background_highlights.clone();
2718 let snapshot = layout.position_map.snapshot.clone();
2719 let theme = cx.theme().clone();
2720 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2721 let max_row = layout.max_row;
2722
2723 editor.scrollbar_marker_state.dirty = false;
2724 editor.scrollbar_marker_state.pending_refresh =
2725 Some(cx.spawn(|editor, mut cx| async move {
2726 let scrollbar_size = scrollbar_layout.hitbox.size;
2727 let scrollbar_markers = cx
2728 .background_executor()
2729 .spawn(async move {
2730 let mut marker_quads = Vec::new();
2731
2732 if scrollbar_settings.git_diff {
2733 let marker_row_ranges = snapshot
2734 .buffer_snapshot
2735 .git_diff_hunks_in_range(0..max_row)
2736 .map(|hunk| {
2737 let start_display_row =
2738 Point::new(hunk.associated_range.start, 0)
2739 .to_display_point(&snapshot.display_snapshot)
2740 .row();
2741 let mut end_display_row =
2742 Point::new(hunk.associated_range.end, 0)
2743 .to_display_point(&snapshot.display_snapshot)
2744 .row();
2745 if end_display_row != start_display_row {
2746 end_display_row -= 1;
2747 }
2748 let color = match hunk.status() {
2749 DiffHunkStatus::Added => theme.status().created,
2750 DiffHunkStatus::Modified => theme.status().modified,
2751 DiffHunkStatus::Removed => theme.status().deleted,
2752 };
2753 ColoredRange {
2754 start: start_display_row,
2755 end: end_display_row,
2756 color,
2757 }
2758 });
2759
2760 marker_quads.extend(
2761 scrollbar_layout
2762 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
2763 );
2764 }
2765
2766 for (background_highlight_id, (_, background_ranges)) in
2767 background_highlights.iter()
2768 {
2769 let is_search_highlights = *background_highlight_id
2770 == TypeId::of::<BufferSearchHighlights>();
2771 let is_symbol_occurrences = *background_highlight_id
2772 == TypeId::of::<DocumentHighlightRead>()
2773 || *background_highlight_id
2774 == TypeId::of::<DocumentHighlightWrite>();
2775 if (is_search_highlights && scrollbar_settings.search_results)
2776 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
2777 {
2778 let mut color = theme.status().info;
2779 if is_symbol_occurrences {
2780 color.fade_out(0.5);
2781 }
2782 let marker_row_ranges =
2783 background_ranges.into_iter().map(|range| {
2784 let display_start = range
2785 .start
2786 .to_display_point(&snapshot.display_snapshot);
2787 let display_end = range
2788 .end
2789 .to_display_point(&snapshot.display_snapshot);
2790 ColoredRange {
2791 start: display_start.row(),
2792 end: display_end.row(),
2793 color,
2794 }
2795 });
2796 marker_quads.extend(
2797 scrollbar_layout
2798 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
2799 );
2800 }
2801 }
2802
2803 if scrollbar_settings.diagnostics {
2804 let max_point =
2805 snapshot.display_snapshot.buffer_snapshot.max_point();
2806
2807 let diagnostics = snapshot
2808 .buffer_snapshot
2809 .diagnostics_in_range::<_, Point>(
2810 Point::zero()..max_point,
2811 false,
2812 )
2813 // We want to sort by severity, in order to paint the most severe diagnostics last.
2814 .sorted_by_key(|diagnostic| {
2815 std::cmp::Reverse(diagnostic.diagnostic.severity)
2816 });
2817
2818 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
2819 let start_display = diagnostic
2820 .range
2821 .start
2822 .to_display_point(&snapshot.display_snapshot);
2823 let end_display = diagnostic
2824 .range
2825 .end
2826 .to_display_point(&snapshot.display_snapshot);
2827 let color = match diagnostic.diagnostic.severity {
2828 DiagnosticSeverity::ERROR => theme.status().error,
2829 DiagnosticSeverity::WARNING => theme.status().warning,
2830 DiagnosticSeverity::INFORMATION => theme.status().info,
2831 _ => theme.status().hint,
2832 };
2833 ColoredRange {
2834 start: start_display.row(),
2835 end: end_display.row(),
2836 color,
2837 }
2838 });
2839 marker_quads.extend(
2840 scrollbar_layout
2841 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
2842 );
2843 }
2844
2845 Arc::from(marker_quads)
2846 })
2847 .await;
2848
2849 editor.update(&mut cx, |editor, cx| {
2850 editor.scrollbar_marker_state.markers = scrollbar_markers;
2851 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
2852 editor.scrollbar_marker_state.pending_refresh = None;
2853 cx.notify();
2854 })?;
2855
2856 Ok(())
2857 }));
2858 });
2859 }
2860
2861 #[allow(clippy::too_many_arguments)]
2862 fn paint_highlighted_range(
2863 &self,
2864 range: Range<DisplayPoint>,
2865 color: Hsla,
2866 corner_radius: Pixels,
2867 line_end_overshoot: Pixels,
2868 layout: &EditorLayout,
2869 cx: &mut WindowContext,
2870 ) {
2871 let start_row = layout.visible_display_row_range.start;
2872 let end_row = layout.visible_display_row_range.end;
2873 if range.start != range.end {
2874 let row_range = if range.end.column() == 0 {
2875 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
2876 } else {
2877 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
2878 };
2879
2880 let highlighted_range = HighlightedRange {
2881 color,
2882 line_height: layout.position_map.line_height,
2883 corner_radius,
2884 start_y: layout.content_origin.y
2885 + row_range.start as f32 * layout.position_map.line_height
2886 - layout.position_map.scroll_pixel_position.y,
2887 lines: row_range
2888 .into_iter()
2889 .map(|row| {
2890 let line_layout =
2891 &layout.position_map.line_layouts[(row - start_row) as usize].line;
2892 HighlightedRangeLine {
2893 start_x: if row == range.start.row() {
2894 layout.content_origin.x
2895 + line_layout.x_for_index(range.start.column() as usize)
2896 - layout.position_map.scroll_pixel_position.x
2897 } else {
2898 layout.content_origin.x
2899 - layout.position_map.scroll_pixel_position.x
2900 },
2901 end_x: if row == range.end.row() {
2902 layout.content_origin.x
2903 + line_layout.x_for_index(range.end.column() as usize)
2904 - layout.position_map.scroll_pixel_position.x
2905 } else {
2906 layout.content_origin.x + line_layout.width + line_end_overshoot
2907 - layout.position_map.scroll_pixel_position.x
2908 },
2909 }
2910 })
2911 .collect(),
2912 };
2913
2914 highlighted_range.paint(layout.text_hitbox.bounds, cx);
2915 }
2916 }
2917
2918 fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2919 if layout.folds.is_empty() {
2920 return;
2921 }
2922
2923 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2924 let fold_corner_radius = 0.15 * layout.position_map.line_height;
2925 for mut fold in mem::take(&mut layout.folds) {
2926 fold.hover_element.paint(cx);
2927
2928 let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
2929 let fold_background = if hover_element.interactivity().active.unwrap() {
2930 cx.theme().colors().ghost_element_active
2931 } else if hover_element.interactivity().hovered.unwrap() {
2932 cx.theme().colors().ghost_element_hover
2933 } else {
2934 cx.theme().colors().ghost_element_background
2935 };
2936
2937 self.paint_highlighted_range(
2938 fold.display_range.clone(),
2939 fold_background,
2940 fold_corner_radius,
2941 fold_corner_radius * 2.,
2942 layout,
2943 cx,
2944 );
2945 }
2946 })
2947 }
2948
2949 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2950 if let Some(mut inline_blame) = layout.inline_blame.take() {
2951 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2952 inline_blame.paint(cx);
2953 })
2954 }
2955 }
2956
2957 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2958 for mut block in layout.blocks.drain(..) {
2959 block.element.paint(cx);
2960 }
2961 }
2962
2963 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
2964 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
2965 mouse_context_menu.paint(cx);
2966 }
2967 }
2968
2969 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
2970 cx.on_mouse_event({
2971 let position_map = layout.position_map.clone();
2972 let editor = self.editor.clone();
2973 let hitbox = layout.hitbox.clone();
2974 let mut delta = ScrollDelta::default();
2975
2976 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
2977 // accidentally turn off their scrolling.
2978 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
2979
2980 move |event: &ScrollWheelEvent, phase, cx| {
2981 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
2982 delta = delta.coalesce(event.delta);
2983 editor.update(cx, |editor, cx| {
2984 let position_map: &PositionMap = &position_map;
2985
2986 let line_height = position_map.line_height;
2987 let max_glyph_width = position_map.em_width;
2988 let (delta, axis) = match delta {
2989 gpui::ScrollDelta::Pixels(mut pixels) => {
2990 //Trackpad
2991 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2992 (pixels, axis)
2993 }
2994
2995 gpui::ScrollDelta::Lines(lines) => {
2996 //Not trackpad
2997 let pixels =
2998 point(lines.x * max_glyph_width, lines.y * line_height);
2999 (pixels, None)
3000 }
3001 };
3002
3003 let scroll_position = position_map.snapshot.scroll_position();
3004 let x = (scroll_position.x * max_glyph_width
3005 - (delta.x * scroll_sensitivity))
3006 / max_glyph_width;
3007 let y = (scroll_position.y * line_height - (delta.y * scroll_sensitivity))
3008 / line_height;
3009 let scroll_position =
3010 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
3011 editor.scroll(scroll_position, axis, cx);
3012 cx.stop_propagation();
3013 });
3014 }
3015 }
3016 });
3017 }
3018
3019 fn paint_mouse_listeners(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
3020 self.paint_scroll_wheel_listener(layout, cx);
3021
3022 cx.on_mouse_event({
3023 let position_map = layout.position_map.clone();
3024 let editor = self.editor.clone();
3025 let text_hitbox = layout.text_hitbox.clone();
3026 let gutter_hitbox = layout.gutter_hitbox.clone();
3027
3028 move |event: &MouseDownEvent, phase, cx| {
3029 if phase == DispatchPhase::Bubble {
3030 match event.button {
3031 MouseButton::Left => editor.update(cx, |editor, cx| {
3032 Self::mouse_left_down(
3033 editor,
3034 event,
3035 &position_map,
3036 &text_hitbox,
3037 &gutter_hitbox,
3038 cx,
3039 );
3040 }),
3041 MouseButton::Right => editor.update(cx, |editor, cx| {
3042 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
3043 }),
3044 MouseButton::Middle => editor.update(cx, |editor, cx| {
3045 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
3046 }),
3047 _ => {}
3048 };
3049 }
3050 }
3051 });
3052
3053 cx.on_mouse_event({
3054 let editor = self.editor.clone();
3055 let position_map = layout.position_map.clone();
3056 let text_hitbox = layout.text_hitbox.clone();
3057
3058 move |event: &MouseUpEvent, phase, cx| {
3059 if phase == DispatchPhase::Bubble {
3060 editor.update(cx, |editor, cx| {
3061 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
3062 });
3063 }
3064 }
3065 });
3066 cx.on_mouse_event({
3067 let position_map = layout.position_map.clone();
3068 let editor = self.editor.clone();
3069 let text_hitbox = layout.text_hitbox.clone();
3070 let gutter_hitbox = layout.gutter_hitbox.clone();
3071
3072 move |event: &MouseMoveEvent, phase, cx| {
3073 if phase == DispatchPhase::Bubble {
3074 editor.update(cx, |editor, cx| {
3075 if event.pressed_button == Some(MouseButton::Left) {
3076 Self::mouse_dragged(
3077 editor,
3078 event,
3079 &position_map,
3080 text_hitbox.bounds,
3081 cx,
3082 )
3083 }
3084
3085 Self::mouse_moved(
3086 editor,
3087 event,
3088 &position_map,
3089 &text_hitbox,
3090 &gutter_hitbox,
3091 cx,
3092 )
3093 });
3094 }
3095 }
3096 });
3097 }
3098
3099 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
3100 bounds.upper_right().x - self.style.scrollbar_width
3101 }
3102
3103 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
3104 let style = &self.style;
3105 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3106 let layout = cx
3107 .text_system()
3108 .shape_line(
3109 SharedString::from(" ".repeat(column)),
3110 font_size,
3111 &[TextRun {
3112 len: column,
3113 font: style.text.font(),
3114 color: Hsla::default(),
3115 background_color: None,
3116 underline: None,
3117 strikethrough: None,
3118 }],
3119 )
3120 .unwrap();
3121
3122 layout.width
3123 }
3124
3125 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
3126 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
3127 self.column_pixels(digit_count, cx)
3128 }
3129}
3130
3131fn render_inline_blame_entry(
3132 blame: &gpui::Model<GitBlame>,
3133 blame_entry: BlameEntry,
3134 style: &EditorStyle,
3135 workspace: Option<WeakView<Workspace>>,
3136 cx: &mut WindowContext<'_>,
3137) -> AnyElement {
3138 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry, cx);
3139
3140 let author = blame_entry.author.as_deref().unwrap_or_default();
3141 let text = format!("{}, {}", author, relative_timestamp);
3142
3143 let details = blame.read(cx).details_for_entry(&blame_entry);
3144
3145 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
3146
3147 h_flex()
3148 .id("inline-blame")
3149 .w_full()
3150 .font_family(style.text.font().family)
3151 .text_color(cx.theme().status().hint)
3152 .line_height(style.text.line_height)
3153 .child(Icon::new(IconName::FileGit).color(Color::Hint))
3154 .child(text)
3155 .gap_2()
3156 .hoverable_tooltip(move |_| tooltip.clone().into())
3157 .into_any()
3158}
3159
3160fn render_blame_entry(
3161 ix: usize,
3162 blame: &gpui::Model<GitBlame>,
3163 blame_entry: BlameEntry,
3164 style: &EditorStyle,
3165 last_used_color: &mut Option<(PlayerColor, Oid)>,
3166 editor: View<Editor>,
3167 cx: &mut WindowContext<'_>,
3168) -> AnyElement {
3169 let mut sha_color = cx
3170 .theme()
3171 .players()
3172 .color_for_participant(blame_entry.sha.into());
3173 // If the last color we used is the same as the one we get for this line, but
3174 // the commit SHAs are different, then we try again to get a different color.
3175 match *last_used_color {
3176 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
3177 let index: u32 = blame_entry.sha.into();
3178 sha_color = cx.theme().players().color_for_participant(index + 1);
3179 }
3180 _ => {}
3181 };
3182 last_used_color.replace((sha_color, blame_entry.sha));
3183
3184 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry, cx);
3185
3186 let pretty_commit_id = format!("{}", blame_entry.sha);
3187 let short_commit_id = pretty_commit_id.chars().take(6).collect::<String>();
3188
3189 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
3190 let name = util::truncate_and_trailoff(author_name, 20);
3191
3192 let details = blame.read(cx).details_for_entry(&blame_entry);
3193
3194 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
3195
3196 let tooltip = cx.new_view(|_| {
3197 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
3198 });
3199
3200 h_flex()
3201 .w_full()
3202 .font_family(style.text.font().family)
3203 .line_height(style.text.line_height)
3204 .id(("blame", ix))
3205 .children([
3206 div()
3207 .text_color(sha_color.cursor)
3208 .child(short_commit_id)
3209 .mr_2(),
3210 div()
3211 .w_full()
3212 .h_flex()
3213 .justify_between()
3214 .text_color(cx.theme().status().hint)
3215 .child(name)
3216 .child(relative_timestamp),
3217 ])
3218 .on_mouse_down(MouseButton::Right, {
3219 let blame_entry = blame_entry.clone();
3220 move |event, cx| {
3221 deploy_blame_entry_context_menu(&blame_entry, editor.clone(), event.position, cx);
3222 }
3223 })
3224 .hover(|style| style.bg(cx.theme().colors().element_hover))
3225 .when_some(
3226 details.and_then(|details| details.permalink),
3227 |this, url| {
3228 let url = url.clone();
3229 this.cursor_pointer().on_click(move |_, cx| {
3230 cx.stop_propagation();
3231 cx.open_url(url.as_str())
3232 })
3233 },
3234 )
3235 .hoverable_tooltip(move |_| tooltip.clone().into())
3236 .into_any()
3237}
3238
3239fn deploy_blame_entry_context_menu(
3240 blame_entry: &BlameEntry,
3241 editor: View<Editor>,
3242 position: gpui::Point<Pixels>,
3243 cx: &mut WindowContext<'_>,
3244) {
3245 let context_menu = ContextMenu::build(cx, move |this, _| {
3246 let sha = format!("{}", blame_entry.sha);
3247 this.entry("Copy commit SHA", None, move |cx| {
3248 cx.write_to_clipboard(ClipboardItem::new(sha.clone()));
3249 })
3250 });
3251
3252 editor.update(cx, move |editor, cx| {
3253 editor.mouse_context_menu = Some(MouseContextMenu::new(position, context_menu, cx));
3254 cx.notify();
3255 });
3256}
3257
3258#[derive(Debug)]
3259pub(crate) struct LineWithInvisibles {
3260 pub line: ShapedLine,
3261 invisibles: Vec<Invisible>,
3262}
3263
3264impl LineWithInvisibles {
3265 fn from_chunks<'a>(
3266 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
3267 text_style: &TextStyle,
3268 max_line_len: usize,
3269 max_line_count: usize,
3270 line_number_layouts: &[Option<ShapedLine>],
3271 editor_mode: EditorMode,
3272 cx: &WindowContext,
3273 ) -> Vec<Self> {
3274 let mut layouts = Vec::with_capacity(max_line_count);
3275 let mut line = String::new();
3276 let mut invisibles = Vec::new();
3277 let mut styles = Vec::new();
3278 let mut non_whitespace_added = false;
3279 let mut row = 0;
3280 let mut line_exceeded_max_len = false;
3281 let font_size = text_style.font_size.to_pixels(cx.rem_size());
3282
3283 for highlighted_chunk in chunks.chain([HighlightedChunk {
3284 chunk: "\n",
3285 style: None,
3286 is_tab: false,
3287 }]) {
3288 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
3289 if ix > 0 {
3290 let shaped_line = cx
3291 .text_system()
3292 .shape_line(line.clone().into(), font_size, &styles)
3293 .unwrap();
3294 layouts.push(Self {
3295 line: shaped_line,
3296 invisibles: std::mem::take(&mut invisibles),
3297 });
3298
3299 line.clear();
3300 styles.clear();
3301 row += 1;
3302 line_exceeded_max_len = false;
3303 non_whitespace_added = false;
3304 if row == max_line_count {
3305 return layouts;
3306 }
3307 }
3308
3309 if !line_chunk.is_empty() && !line_exceeded_max_len {
3310 let text_style = if let Some(style) = highlighted_chunk.style {
3311 Cow::Owned(text_style.clone().highlight(style))
3312 } else {
3313 Cow::Borrowed(text_style)
3314 };
3315
3316 if line.len() + line_chunk.len() > max_line_len {
3317 let mut chunk_len = max_line_len - line.len();
3318 while !line_chunk.is_char_boundary(chunk_len) {
3319 chunk_len -= 1;
3320 }
3321 line_chunk = &line_chunk[..chunk_len];
3322 line_exceeded_max_len = true;
3323 }
3324
3325 styles.push(TextRun {
3326 len: line_chunk.len(),
3327 font: text_style.font(),
3328 color: text_style.color,
3329 background_color: text_style.background_color,
3330 underline: text_style.underline,
3331 strikethrough: text_style.strikethrough,
3332 });
3333
3334 if editor_mode == EditorMode::Full {
3335 // Line wrap pads its contents with fake whitespaces,
3336 // avoid printing them
3337 let inside_wrapped_string = line_number_layouts
3338 .get(row)
3339 .and_then(|layout| layout.as_ref())
3340 .is_none();
3341 if highlighted_chunk.is_tab {
3342 if non_whitespace_added || !inside_wrapped_string {
3343 invisibles.push(Invisible::Tab {
3344 line_start_offset: line.len(),
3345 });
3346 }
3347 } else {
3348 invisibles.extend(
3349 line_chunk
3350 .chars()
3351 .enumerate()
3352 .filter(|(_, line_char)| {
3353 let is_whitespace = line_char.is_whitespace();
3354 non_whitespace_added |= !is_whitespace;
3355 is_whitespace
3356 && (non_whitespace_added || !inside_wrapped_string)
3357 })
3358 .map(|(whitespace_index, _)| Invisible::Whitespace {
3359 line_offset: line.len() + whitespace_index,
3360 }),
3361 )
3362 }
3363 }
3364
3365 line.push_str(line_chunk);
3366 }
3367 }
3368 }
3369
3370 layouts
3371 }
3372
3373 fn draw(
3374 &self,
3375 layout: &EditorLayout,
3376 row: u32,
3377 content_origin: gpui::Point<Pixels>,
3378 whitespace_setting: ShowWhitespaceSetting,
3379 selection_ranges: &[Range<DisplayPoint>],
3380 cx: &mut WindowContext,
3381 ) {
3382 let line_height = layout.position_map.line_height;
3383 let line_y =
3384 line_height * (row as f32 - layout.position_map.scroll_pixel_position.y / line_height);
3385
3386 let line_origin =
3387 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
3388 self.line.paint(line_origin, line_height, cx).log_err();
3389
3390 self.draw_invisibles(
3391 &selection_ranges,
3392 layout,
3393 content_origin,
3394 line_y,
3395 row,
3396 line_height,
3397 whitespace_setting,
3398 cx,
3399 );
3400 }
3401
3402 #[allow(clippy::too_many_arguments)]
3403 fn draw_invisibles(
3404 &self,
3405 selection_ranges: &[Range<DisplayPoint>],
3406 layout: &EditorLayout,
3407 content_origin: gpui::Point<Pixels>,
3408 line_y: Pixels,
3409 row: u32,
3410 line_height: Pixels,
3411 whitespace_setting: ShowWhitespaceSetting,
3412 cx: &mut WindowContext,
3413 ) {
3414 let allowed_invisibles_regions = match whitespace_setting {
3415 ShowWhitespaceSetting::None => return,
3416 ShowWhitespaceSetting::Selection => Some(selection_ranges),
3417 ShowWhitespaceSetting::All => None,
3418 };
3419
3420 for invisible in &self.invisibles {
3421 let (&token_offset, invisible_symbol) = match invisible {
3422 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
3423 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
3424 };
3425
3426 let x_offset = self.line.x_for_index(token_offset);
3427 let invisible_offset =
3428 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
3429 let origin = content_origin
3430 + gpui::point(
3431 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
3432 line_y,
3433 );
3434
3435 if let Some(allowed_regions) = allowed_invisibles_regions {
3436 let invisible_point = DisplayPoint::new(row, token_offset as u32);
3437 if !allowed_regions
3438 .iter()
3439 .any(|region| region.start <= invisible_point && invisible_point < region.end)
3440 {
3441 continue;
3442 }
3443 }
3444 invisible_symbol.paint(origin, line_height, cx).log_err();
3445 }
3446 }
3447}
3448
3449#[derive(Debug, Clone, Copy, PartialEq, Eq)]
3450enum Invisible {
3451 Tab { line_start_offset: usize },
3452 Whitespace { line_offset: usize },
3453}
3454
3455impl Element for EditorElement {
3456 type RequestLayoutState = ();
3457 type PrepaintState = EditorLayout;
3458
3459 fn id(&self) -> Option<ElementId> {
3460 None
3461 }
3462
3463 fn request_layout(
3464 &mut self,
3465 _: Option<&GlobalElementId>,
3466 cx: &mut WindowContext,
3467 ) -> (gpui::LayoutId, ()) {
3468 self.editor.update(cx, |editor, cx| {
3469 editor.set_style(self.style.clone(), cx);
3470
3471 let layout_id = match editor.mode {
3472 EditorMode::SingleLine => {
3473 let rem_size = cx.rem_size();
3474 let mut style = Style::default();
3475 style.size.width = relative(1.).into();
3476 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
3477 cx.request_layout(&style, None)
3478 }
3479 EditorMode::AutoHeight { max_lines } => {
3480 let editor_handle = cx.view().clone();
3481 let max_line_number_width =
3482 self.max_line_number_width(&editor.snapshot(cx), cx);
3483 cx.request_measured_layout(Style::default(), move |known_dimensions, _, cx| {
3484 editor_handle
3485 .update(cx, |editor, cx| {
3486 compute_auto_height_layout(
3487 editor,
3488 max_lines,
3489 max_line_number_width,
3490 known_dimensions,
3491 cx,
3492 )
3493 })
3494 .unwrap_or_default()
3495 })
3496 }
3497 EditorMode::Full => {
3498 let mut style = Style::default();
3499 style.size.width = relative(1.).into();
3500 style.size.height = relative(1.).into();
3501 cx.request_layout(&style, None)
3502 }
3503 };
3504
3505 (layout_id, ())
3506 })
3507 }
3508
3509 fn prepaint(
3510 &mut self,
3511 _: Option<&GlobalElementId>,
3512 bounds: Bounds<Pixels>,
3513 _: &mut Self::RequestLayoutState,
3514 cx: &mut WindowContext,
3515 ) -> Self::PrepaintState {
3516 let text_style = TextStyleRefinement {
3517 font_size: Some(self.style.text.font_size),
3518 line_height: Some(self.style.text.line_height),
3519 ..Default::default()
3520 };
3521 cx.set_view_id(self.editor.entity_id());
3522 cx.with_text_style(Some(text_style), |cx| {
3523 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3524 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
3525 let style = self.style.clone();
3526
3527 let font_id = cx.text_system().resolve_font(&style.text.font());
3528 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3529 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3530 let em_width = cx
3531 .text_system()
3532 .typographic_bounds(font_id, font_size, 'm')
3533 .unwrap()
3534 .size
3535 .width;
3536 let em_advance = cx
3537 .text_system()
3538 .advance(font_id, font_size, 'm')
3539 .unwrap()
3540 .width;
3541
3542 let gutter_dimensions = snapshot.gutter_dimensions(
3543 font_id,
3544 font_size,
3545 em_width,
3546 self.max_line_number_width(&snapshot, cx),
3547 cx,
3548 );
3549 let text_width = bounds.size.width - gutter_dimensions.width;
3550 let overscroll = size(em_width, px(0.));
3551
3552 snapshot = self.editor.update(cx, |editor, cx| {
3553 editor.last_bounds = Some(bounds);
3554 editor.gutter_width = gutter_dimensions.width;
3555 editor.set_visible_line_count(bounds.size.height / line_height, cx);
3556
3557 let editor_width =
3558 text_width - gutter_dimensions.margin - overscroll.width - em_width;
3559 let wrap_width = match editor.soft_wrap_mode(cx) {
3560 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
3561 SoftWrap::EditorWidth => editor_width,
3562 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
3563 };
3564
3565 if editor.set_wrap_width(Some(wrap_width), cx) {
3566 editor.snapshot(cx)
3567 } else {
3568 snapshot
3569 }
3570 });
3571
3572 let wrap_guides = self
3573 .editor
3574 .read(cx)
3575 .wrap_guides(cx)
3576 .iter()
3577 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
3578 .collect::<SmallVec<[_; 2]>>();
3579
3580 let hitbox = cx.insert_hitbox(bounds, false);
3581 let gutter_hitbox = cx.insert_hitbox(
3582 Bounds {
3583 origin: bounds.origin,
3584 size: size(gutter_dimensions.width, bounds.size.height),
3585 },
3586 false,
3587 );
3588 let text_hitbox = cx.insert_hitbox(
3589 Bounds {
3590 origin: gutter_hitbox.upper_right(),
3591 size: size(text_width, bounds.size.height),
3592 },
3593 false,
3594 );
3595 // Offset the content_bounds from the text_bounds by the gutter margin (which
3596 // is roughly half a character wide) to make hit testing work more like how we want.
3597 let content_origin =
3598 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
3599
3600 let mut autoscroll_containing_element = false;
3601 let mut autoscroll_horizontally = false;
3602 self.editor.update(cx, |editor, cx| {
3603 autoscroll_containing_element =
3604 editor.autoscroll_requested() || editor.has_pending_selection();
3605 autoscroll_horizontally = editor.autoscroll_vertically(bounds, line_height, cx);
3606 snapshot = editor.snapshot(cx);
3607 });
3608
3609 let mut scroll_position = snapshot.scroll_position();
3610 // The scroll position is a fractional point, the whole number of which represents
3611 // the top of the window in terms of display rows.
3612 let start_row = scroll_position.y as u32;
3613 let height_in_lines = bounds.size.height / line_height;
3614 let max_row = snapshot.max_point().row();
3615 let end_row = cmp::min(
3616 (scroll_position.y + height_in_lines).ceil() as u32,
3617 max_row + 1,
3618 );
3619
3620 let buffer_rows = snapshot
3621 .buffer_rows(start_row)
3622 .take((start_row..end_row).len());
3623
3624 let start_anchor = if start_row == 0 {
3625 Anchor::min()
3626 } else {
3627 snapshot.buffer_snapshot.anchor_before(
3628 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
3629 )
3630 };
3631 let end_anchor = if end_row > max_row {
3632 Anchor::max()
3633 } else {
3634 snapshot.buffer_snapshot.anchor_before(
3635 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
3636 )
3637 };
3638
3639 let highlighted_rows = self
3640 .editor
3641 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
3642 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
3643 start_anchor..end_anchor,
3644 &snapshot.display_snapshot,
3645 cx.theme().colors(),
3646 );
3647
3648 let redacted_ranges = self.editor.read(cx).redacted_ranges(
3649 start_anchor..end_anchor,
3650 &snapshot.display_snapshot,
3651 cx,
3652 );
3653
3654 let (selections, active_rows, newest_selection_head) = self.layout_selections(
3655 start_anchor,
3656 end_anchor,
3657 &snapshot,
3658 start_row,
3659 end_row,
3660 cx,
3661 );
3662
3663 let (line_numbers, fold_statuses) = self.layout_line_numbers(
3664 start_row..end_row,
3665 buffer_rows.clone(),
3666 &active_rows,
3667 newest_selection_head,
3668 &snapshot,
3669 cx,
3670 );
3671
3672 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
3673
3674 let mut max_visible_line_width = Pixels::ZERO;
3675 let line_layouts =
3676 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
3677 for line_with_invisibles in &line_layouts {
3678 if line_with_invisibles.line.width > max_visible_line_width {
3679 max_visible_line_width = line_with_invisibles.line.width;
3680 }
3681 }
3682
3683 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
3684 .unwrap()
3685 .width;
3686 let mut scroll_width =
3687 longest_line_width.max(max_visible_line_width) + overscroll.width;
3688
3689 let mut blocks = cx.with_element_namespace("blocks", |cx| {
3690 self.build_blocks(
3691 start_row..end_row,
3692 &snapshot,
3693 &hitbox,
3694 &text_hitbox,
3695 &mut scroll_width,
3696 &gutter_dimensions,
3697 em_width,
3698 gutter_dimensions.width + gutter_dimensions.margin,
3699 line_height,
3700 &line_layouts,
3701 cx,
3702 )
3703 });
3704
3705 let scroll_pixel_position = point(
3706 scroll_position.x * em_width,
3707 scroll_position.y * line_height,
3708 );
3709
3710 let mut inline_blame = None;
3711 if let Some(newest_selection_head) = newest_selection_head {
3712 let display_row = newest_selection_head.row();
3713 if (start_row..end_row).contains(&display_row) {
3714 let line_layout = &line_layouts[(display_row - start_row) as usize];
3715 inline_blame = self.layout_inline_blame(
3716 display_row,
3717 &snapshot.display_snapshot,
3718 line_layout,
3719 em_width,
3720 content_origin,
3721 scroll_pixel_position,
3722 line_height,
3723 cx,
3724 );
3725 }
3726 }
3727
3728 let blamed_display_rows = self.layout_blame_entries(
3729 buffer_rows,
3730 em_width,
3731 scroll_position,
3732 line_height,
3733 &gutter_hitbox,
3734 gutter_dimensions.git_blame_entries_width,
3735 cx,
3736 );
3737
3738 let scroll_max = point(
3739 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
3740 max_row as f32,
3741 );
3742
3743 self.editor.update(cx, |editor, cx| {
3744 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3745
3746 let autoscrolled = if autoscroll_horizontally {
3747 editor.autoscroll_horizontally(
3748 start_row,
3749 text_hitbox.size.width,
3750 scroll_width,
3751 em_width,
3752 &line_layouts,
3753 cx,
3754 )
3755 } else {
3756 false
3757 };
3758
3759 if clamped || autoscrolled {
3760 snapshot = editor.snapshot(cx);
3761 scroll_position = snapshot.scroll_position();
3762 }
3763 });
3764
3765 cx.with_element_namespace("blocks", |cx| {
3766 self.layout_blocks(
3767 &mut blocks,
3768 &hitbox,
3769 line_height,
3770 scroll_pixel_position,
3771 cx,
3772 );
3773 });
3774
3775 let cursors = self.collect_cursors(&snapshot, cx);
3776
3777 let (visible_cursors, non_visible_cursors) = self.layout_visible_cursors(
3778 &snapshot,
3779 &selections,
3780 start_row..end_row,
3781 &line_layouts,
3782 &text_hitbox,
3783 content_origin,
3784 scroll_position,
3785 scroll_pixel_position,
3786 line_height,
3787 em_width,
3788 autoscroll_containing_element,
3789 cx,
3790 );
3791
3792 let scrollbar_layout = self.layout_scrollbar(
3793 &snapshot,
3794 bounds,
3795 scroll_position,
3796 height_in_lines,
3797 non_visible_cursors,
3798 cx,
3799 );
3800
3801 let folds = cx.with_element_namespace("folds", |cx| {
3802 self.layout_folds(
3803 &snapshot,
3804 content_origin,
3805 start_anchor..end_anchor,
3806 start_row..end_row,
3807 scroll_pixel_position,
3808 line_height,
3809 &line_layouts,
3810 cx,
3811 )
3812 });
3813
3814 let gutter_settings = EditorSettings::get_global(cx).gutter;
3815
3816 let mut context_menu_visible = false;
3817 let mut code_actions_indicator = None;
3818 if let Some(newest_selection_head) = newest_selection_head {
3819 if (start_row..end_row).contains(&newest_selection_head.row()) {
3820 context_menu_visible = self.layout_context_menu(
3821 line_height,
3822 &hitbox,
3823 &text_hitbox,
3824 content_origin,
3825 start_row,
3826 scroll_pixel_position,
3827 &line_layouts,
3828 newest_selection_head,
3829 cx,
3830 );
3831 if gutter_settings.code_actions {
3832 code_actions_indicator = self.layout_code_actions_indicator(
3833 line_height,
3834 newest_selection_head,
3835 scroll_pixel_position,
3836 &gutter_dimensions,
3837 &gutter_hitbox,
3838 cx,
3839 );
3840 }
3841 }
3842 }
3843
3844 if !context_menu_visible && !cx.has_active_drag() {
3845 self.layout_hover_popovers(
3846 &snapshot,
3847 &hitbox,
3848 &text_hitbox,
3849 start_row..end_row,
3850 content_origin,
3851 scroll_pixel_position,
3852 &line_layouts,
3853 line_height,
3854 em_width,
3855 cx,
3856 );
3857 }
3858
3859 let mouse_context_menu = self.layout_mouse_context_menu(cx);
3860
3861 let fold_indicators = if gutter_settings.folds {
3862 cx.with_element_namespace("gutter_fold_indicators", |cx| {
3863 self.layout_gutter_fold_indicators(
3864 fold_statuses,
3865 line_height,
3866 &gutter_dimensions,
3867 gutter_settings,
3868 scroll_pixel_position,
3869 &gutter_hitbox,
3870 cx,
3871 )
3872 })
3873 } else {
3874 Vec::new()
3875 };
3876
3877 let invisible_symbol_font_size = font_size / 2.;
3878 let tab_invisible = cx
3879 .text_system()
3880 .shape_line(
3881 "→".into(),
3882 invisible_symbol_font_size,
3883 &[TextRun {
3884 len: "→".len(),
3885 font: self.style.text.font(),
3886 color: cx.theme().colors().editor_invisible,
3887 background_color: None,
3888 underline: None,
3889 strikethrough: None,
3890 }],
3891 )
3892 .unwrap();
3893 let space_invisible = cx
3894 .text_system()
3895 .shape_line(
3896 "•".into(),
3897 invisible_symbol_font_size,
3898 &[TextRun {
3899 len: "•".len(),
3900 font: self.style.text.font(),
3901 color: cx.theme().colors().editor_invisible,
3902 background_color: None,
3903 underline: None,
3904 strikethrough: None,
3905 }],
3906 )
3907 .unwrap();
3908
3909 EditorLayout {
3910 mode: snapshot.mode,
3911 position_map: Arc::new(PositionMap {
3912 size: bounds.size,
3913 scroll_pixel_position,
3914 scroll_max,
3915 line_layouts,
3916 line_height,
3917 em_width,
3918 em_advance,
3919 snapshot,
3920 }),
3921 visible_display_row_range: start_row..end_row,
3922 wrap_guides,
3923 hitbox,
3924 text_hitbox,
3925 gutter_hitbox,
3926 gutter_dimensions,
3927 content_origin,
3928 scrollbar_layout,
3929 max_row,
3930 active_rows,
3931 highlighted_rows,
3932 highlighted_ranges,
3933 redacted_ranges,
3934 line_numbers,
3935 display_hunks,
3936 blamed_display_rows,
3937 inline_blame,
3938 folds,
3939 blocks,
3940 cursors,
3941 visible_cursors,
3942 selections,
3943 mouse_context_menu,
3944 code_actions_indicator,
3945 fold_indicators,
3946 tab_invisible,
3947 space_invisible,
3948 }
3949 })
3950 })
3951 }
3952
3953 fn paint(
3954 &mut self,
3955 _: Option<&GlobalElementId>,
3956 bounds: Bounds<gpui::Pixels>,
3957 _: &mut Self::RequestLayoutState,
3958 layout: &mut Self::PrepaintState,
3959 cx: &mut WindowContext,
3960 ) {
3961 let focus_handle = self.editor.focus_handle(cx);
3962 let key_context = self.editor.read(cx).key_context(cx);
3963 cx.set_focus_handle(&focus_handle);
3964 cx.set_key_context(key_context);
3965 cx.handle_input(
3966 &focus_handle,
3967 ElementInputHandler::new(bounds, self.editor.clone()),
3968 );
3969 self.register_actions(cx);
3970 self.register_key_listeners(cx, layout);
3971
3972 let text_style = TextStyleRefinement {
3973 font_size: Some(self.style.text.font_size),
3974 line_height: Some(self.style.text.line_height),
3975 ..Default::default()
3976 };
3977 cx.with_text_style(Some(text_style), |cx| {
3978 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3979 self.paint_mouse_listeners(layout, cx);
3980
3981 self.paint_background(layout, cx);
3982 if layout.gutter_hitbox.size.width > Pixels::ZERO {
3983 self.paint_gutter(layout, cx);
3984 }
3985 self.paint_text(layout, cx);
3986
3987 if !layout.blocks.is_empty() {
3988 cx.with_element_namespace("blocks", |cx| {
3989 self.paint_blocks(layout, cx);
3990 });
3991 }
3992
3993 self.paint_scrollbar(layout, cx);
3994 self.paint_mouse_context_menu(layout, cx);
3995 });
3996 })
3997 }
3998}
3999
4000impl IntoElement for EditorElement {
4001 type Element = Self;
4002
4003 fn into_element(self) -> Self::Element {
4004 self
4005 }
4006}
4007
4008type BufferRow = u32;
4009
4010pub struct EditorLayout {
4011 position_map: Arc<PositionMap>,
4012 hitbox: Hitbox,
4013 text_hitbox: Hitbox,
4014 gutter_hitbox: Hitbox,
4015 gutter_dimensions: GutterDimensions,
4016 content_origin: gpui::Point<Pixels>,
4017 scrollbar_layout: Option<ScrollbarLayout>,
4018 mode: EditorMode,
4019 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
4020 visible_display_row_range: Range<u32>,
4021 active_rows: BTreeMap<u32, bool>,
4022 highlighted_rows: BTreeMap<u32, Hsla>,
4023 line_numbers: Vec<Option<ShapedLine>>,
4024 display_hunks: Vec<DisplayDiffHunk>,
4025 blamed_display_rows: Option<Vec<AnyElement>>,
4026 inline_blame: Option<AnyElement>,
4027 folds: Vec<FoldLayout>,
4028 blocks: Vec<BlockLayout>,
4029 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
4030 redacted_ranges: Vec<Range<DisplayPoint>>,
4031 cursors: Vec<(Anchor, Hsla)>,
4032 visible_cursors: Vec<CursorLayout>,
4033 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
4034 max_row: u32,
4035 code_actions_indicator: Option<AnyElement>,
4036 fold_indicators: Vec<Option<AnyElement>>,
4037 mouse_context_menu: Option<AnyElement>,
4038 tab_invisible: ShapedLine,
4039 space_invisible: ShapedLine,
4040}
4041
4042impl EditorLayout {
4043 fn line_end_overshoot(&self) -> Pixels {
4044 0.15 * self.position_map.line_height
4045 }
4046}
4047
4048struct ColoredRange<T> {
4049 start: T,
4050 end: T,
4051 color: Hsla,
4052}
4053
4054#[derive(Clone)]
4055struct ScrollbarLayout {
4056 hitbox: Hitbox,
4057 visible_row_range: Range<f32>,
4058 visible: bool,
4059 row_height: Pixels,
4060 thumb_height: Pixels,
4061}
4062
4063impl ScrollbarLayout {
4064 const BORDER_WIDTH: Pixels = px(1.0);
4065 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
4066 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
4067 const MIN_THUMB_HEIGHT: Pixels = px(20.0);
4068
4069 fn thumb_bounds(&self) -> Bounds<Pixels> {
4070 let thumb_top = self.y_for_row(self.visible_row_range.start);
4071 let thumb_bottom = thumb_top + self.thumb_height;
4072 Bounds::from_corners(
4073 point(self.hitbox.left(), thumb_top),
4074 point(self.hitbox.right(), thumb_bottom),
4075 )
4076 }
4077
4078 fn y_for_row(&self, row: f32) -> Pixels {
4079 self.hitbox.top() + row * self.row_height
4080 }
4081
4082 fn marker_quads_for_ranges(
4083 &self,
4084 row_ranges: impl IntoIterator<Item = ColoredRange<u32>>,
4085 column: Option<usize>,
4086 ) -> Vec<PaintQuad> {
4087 struct MinMax {
4088 min: Pixels,
4089 max: Pixels,
4090 }
4091 let (x_range, height_limit) = if let Some(column) = column {
4092 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
4093 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
4094 let end = start + column_width;
4095 (
4096 Range { start, end },
4097 MinMax {
4098 min: Self::MIN_MARKER_HEIGHT,
4099 max: px(f32::MAX),
4100 },
4101 )
4102 } else {
4103 (
4104 Range {
4105 start: Self::BORDER_WIDTH,
4106 end: self.hitbox.size.width,
4107 },
4108 MinMax {
4109 min: Self::LINE_MARKER_HEIGHT,
4110 max: Self::LINE_MARKER_HEIGHT,
4111 },
4112 )
4113 };
4114
4115 let row_to_y = |row: u32| row as f32 * self.row_height;
4116 let mut pixel_ranges = row_ranges
4117 .into_iter()
4118 .map(|range| {
4119 let start_y = row_to_y(range.start);
4120 let end_y = row_to_y(range.end)
4121 + self.row_height.max(height_limit.min).min(height_limit.max);
4122 ColoredRange {
4123 start: start_y,
4124 end: end_y,
4125 color: range.color,
4126 }
4127 })
4128 .peekable();
4129
4130 let mut quads = Vec::new();
4131 while let Some(mut pixel_range) = pixel_ranges.next() {
4132 while let Some(next_pixel_range) = pixel_ranges.peek() {
4133 if pixel_range.end >= next_pixel_range.start - px(1.0)
4134 && pixel_range.color == next_pixel_range.color
4135 {
4136 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
4137 pixel_ranges.next();
4138 } else {
4139 break;
4140 }
4141 }
4142
4143 let bounds = Bounds::from_corners(
4144 point(x_range.start, pixel_range.start),
4145 point(x_range.end, pixel_range.end),
4146 );
4147 quads.push(quad(
4148 bounds,
4149 Corners::default(),
4150 pixel_range.color,
4151 Edges::default(),
4152 Hsla::transparent_black(),
4153 ));
4154 }
4155
4156 quads
4157 }
4158}
4159
4160struct FoldLayout {
4161 display_range: Range<DisplayPoint>,
4162 hover_element: AnyElement,
4163}
4164
4165struct PositionMap {
4166 size: Size<Pixels>,
4167 line_height: Pixels,
4168 scroll_pixel_position: gpui::Point<Pixels>,
4169 scroll_max: gpui::Point<f32>,
4170 em_width: Pixels,
4171 em_advance: Pixels,
4172 line_layouts: Vec<LineWithInvisibles>,
4173 snapshot: EditorSnapshot,
4174}
4175
4176#[derive(Debug, Copy, Clone)]
4177pub struct PointForPosition {
4178 pub previous_valid: DisplayPoint,
4179 pub next_valid: DisplayPoint,
4180 pub exact_unclipped: DisplayPoint,
4181 pub column_overshoot_after_line_end: u32,
4182}
4183
4184impl PointForPosition {
4185 pub fn as_valid(&self) -> Option<DisplayPoint> {
4186 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
4187 Some(self.previous_valid)
4188 } else {
4189 None
4190 }
4191 }
4192}
4193
4194impl PositionMap {
4195 fn point_for_position(
4196 &self,
4197 text_bounds: Bounds<Pixels>,
4198 position: gpui::Point<Pixels>,
4199 ) -> PointForPosition {
4200 let scroll_position = self.snapshot.scroll_position();
4201 let position = position - text_bounds.origin;
4202 let y = position.y.max(px(0.)).min(self.size.height);
4203 let x = position.x + (scroll_position.x * self.em_width);
4204 let row = ((y / self.line_height) + scroll_position.y) as u32;
4205
4206 let (column, x_overshoot_after_line_end) = if let Some(line) = self
4207 .line_layouts
4208 .get(row as usize - scroll_position.y as usize)
4209 .map(|LineWithInvisibles { line, .. }| line)
4210 {
4211 if let Some(ix) = line.index_for_x(x) {
4212 (ix as u32, px(0.))
4213 } else {
4214 (line.len as u32, px(0.).max(x - line.width))
4215 }
4216 } else {
4217 (0, x)
4218 };
4219
4220 let mut exact_unclipped = DisplayPoint::new(row, column);
4221 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
4222 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
4223
4224 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
4225 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
4226 PointForPosition {
4227 previous_valid,
4228 next_valid,
4229 exact_unclipped,
4230 column_overshoot_after_line_end,
4231 }
4232 }
4233}
4234
4235struct BlockLayout {
4236 row: u32,
4237 element: AnyElement,
4238 available_space: Size<AvailableSpace>,
4239 style: BlockStyle,
4240}
4241
4242fn layout_line(
4243 row: u32,
4244 snapshot: &EditorSnapshot,
4245 style: &EditorStyle,
4246 cx: &WindowContext,
4247) -> Result<ShapedLine> {
4248 let mut line = snapshot.line(row);
4249
4250 if line.len() > MAX_LINE_LEN {
4251 let mut len = MAX_LINE_LEN;
4252 while !line.is_char_boundary(len) {
4253 len -= 1;
4254 }
4255
4256 line.truncate(len);
4257 }
4258
4259 cx.text_system().shape_line(
4260 line.into(),
4261 style.text.font_size.to_pixels(cx.rem_size()),
4262 &[TextRun {
4263 len: snapshot.line_len(row) as usize,
4264 font: style.text.font(),
4265 color: Hsla::default(),
4266 background_color: None,
4267 underline: None,
4268 strikethrough: None,
4269 }],
4270 )
4271}
4272
4273pub struct CursorLayout {
4274 origin: gpui::Point<Pixels>,
4275 block_width: Pixels,
4276 line_height: Pixels,
4277 color: Hsla,
4278 shape: CursorShape,
4279 block_text: Option<ShapedLine>,
4280 cursor_name: Option<AnyElement>,
4281}
4282
4283#[derive(Debug)]
4284pub struct CursorName {
4285 string: SharedString,
4286 color: Hsla,
4287 is_top_row: bool,
4288}
4289
4290impl CursorLayout {
4291 pub fn new(
4292 origin: gpui::Point<Pixels>,
4293 block_width: Pixels,
4294 line_height: Pixels,
4295 color: Hsla,
4296 shape: CursorShape,
4297 block_text: Option<ShapedLine>,
4298 ) -> CursorLayout {
4299 CursorLayout {
4300 origin,
4301 block_width,
4302 line_height,
4303 color,
4304 shape,
4305 block_text,
4306 cursor_name: None,
4307 }
4308 }
4309
4310 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
4311 Bounds {
4312 origin: self.origin + origin,
4313 size: size(self.block_width, self.line_height),
4314 }
4315 }
4316
4317 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
4318 match self.shape {
4319 CursorShape::Bar => Bounds {
4320 origin: self.origin + origin,
4321 size: size(px(2.0), self.line_height),
4322 },
4323 CursorShape::Block | CursorShape::Hollow => Bounds {
4324 origin: self.origin + origin,
4325 size: size(self.block_width, self.line_height),
4326 },
4327 CursorShape::Underscore => Bounds {
4328 origin: self.origin
4329 + origin
4330 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
4331 size: size(self.block_width, px(2.0)),
4332 },
4333 }
4334 }
4335
4336 pub fn layout(
4337 &mut self,
4338 origin: gpui::Point<Pixels>,
4339 cursor_name: Option<CursorName>,
4340 cx: &mut WindowContext,
4341 ) {
4342 if let Some(cursor_name) = cursor_name {
4343 let bounds = self.bounds(origin);
4344 let text_size = self.line_height / 1.5;
4345
4346 let name_origin = if cursor_name.is_top_row {
4347 point(bounds.right() - px(1.), bounds.top())
4348 } else {
4349 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
4350 };
4351 let mut name_element = div()
4352 .bg(self.color)
4353 .text_size(text_size)
4354 .px_0p5()
4355 .line_height(text_size + px(2.))
4356 .text_color(cursor_name.color)
4357 .child(cursor_name.string.clone())
4358 .into_any_element();
4359
4360 name_element.prepaint_as_root(
4361 name_origin,
4362 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
4363 cx,
4364 );
4365
4366 self.cursor_name = Some(name_element);
4367 }
4368 }
4369
4370 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
4371 let bounds = self.bounds(origin);
4372
4373 //Draw background or border quad
4374 let cursor = if matches!(self.shape, CursorShape::Hollow) {
4375 outline(bounds, self.color)
4376 } else {
4377 fill(bounds, self.color)
4378 };
4379
4380 if let Some(name) = &mut self.cursor_name {
4381 name.paint(cx);
4382 }
4383
4384 cx.paint_quad(cursor);
4385
4386 if let Some(block_text) = &self.block_text {
4387 block_text
4388 .paint(self.origin + origin, self.line_height, cx)
4389 .log_err();
4390 }
4391 }
4392
4393 pub fn shape(&self) -> CursorShape {
4394 self.shape
4395 }
4396}
4397
4398#[derive(Debug)]
4399pub struct HighlightedRange {
4400 pub start_y: Pixels,
4401 pub line_height: Pixels,
4402 pub lines: Vec<HighlightedRangeLine>,
4403 pub color: Hsla,
4404 pub corner_radius: Pixels,
4405}
4406
4407#[derive(Debug)]
4408pub struct HighlightedRangeLine {
4409 pub start_x: Pixels,
4410 pub end_x: Pixels,
4411}
4412
4413impl HighlightedRange {
4414 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
4415 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
4416 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
4417 self.paint_lines(
4418 self.start_y + self.line_height,
4419 &self.lines[1..],
4420 bounds,
4421 cx,
4422 );
4423 } else {
4424 self.paint_lines(self.start_y, &self.lines, bounds, cx);
4425 }
4426 }
4427
4428 fn paint_lines(
4429 &self,
4430 start_y: Pixels,
4431 lines: &[HighlightedRangeLine],
4432 _bounds: Bounds<Pixels>,
4433 cx: &mut WindowContext,
4434 ) {
4435 if lines.is_empty() {
4436 return;
4437 }
4438
4439 let first_line = lines.first().unwrap();
4440 let last_line = lines.last().unwrap();
4441
4442 let first_top_left = point(first_line.start_x, start_y);
4443 let first_top_right = point(first_line.end_x, start_y);
4444
4445 let curve_height = point(Pixels::ZERO, self.corner_radius);
4446 let curve_width = |start_x: Pixels, end_x: Pixels| {
4447 let max = (end_x - start_x) / 2.;
4448 let width = if max < self.corner_radius {
4449 max
4450 } else {
4451 self.corner_radius
4452 };
4453
4454 point(width, Pixels::ZERO)
4455 };
4456
4457 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
4458 let mut path = gpui::Path::new(first_top_right - top_curve_width);
4459 path.curve_to(first_top_right + curve_height, first_top_right);
4460
4461 let mut iter = lines.iter().enumerate().peekable();
4462 while let Some((ix, line)) = iter.next() {
4463 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
4464
4465 if let Some((_, next_line)) = iter.peek() {
4466 let next_top_right = point(next_line.end_x, bottom_right.y);
4467
4468 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
4469 Ordering::Equal => {
4470 path.line_to(bottom_right);
4471 }
4472 Ordering::Less => {
4473 let curve_width = curve_width(next_top_right.x, bottom_right.x);
4474 path.line_to(bottom_right - curve_height);
4475 if self.corner_radius > Pixels::ZERO {
4476 path.curve_to(bottom_right - curve_width, bottom_right);
4477 }
4478 path.line_to(next_top_right + curve_width);
4479 if self.corner_radius > Pixels::ZERO {
4480 path.curve_to(next_top_right + curve_height, next_top_right);
4481 }
4482 }
4483 Ordering::Greater => {
4484 let curve_width = curve_width(bottom_right.x, next_top_right.x);
4485 path.line_to(bottom_right - curve_height);
4486 if self.corner_radius > Pixels::ZERO {
4487 path.curve_to(bottom_right + curve_width, bottom_right);
4488 }
4489 path.line_to(next_top_right - curve_width);
4490 if self.corner_radius > Pixels::ZERO {
4491 path.curve_to(next_top_right + curve_height, next_top_right);
4492 }
4493 }
4494 }
4495 } else {
4496 let curve_width = curve_width(line.start_x, line.end_x);
4497 path.line_to(bottom_right - curve_height);
4498 if self.corner_radius > Pixels::ZERO {
4499 path.curve_to(bottom_right - curve_width, bottom_right);
4500 }
4501
4502 let bottom_left = point(line.start_x, bottom_right.y);
4503 path.line_to(bottom_left + curve_width);
4504 if self.corner_radius > Pixels::ZERO {
4505 path.curve_to(bottom_left - curve_height, bottom_left);
4506 }
4507 }
4508 }
4509
4510 if first_line.start_x > last_line.start_x {
4511 let curve_width = curve_width(last_line.start_x, first_line.start_x);
4512 let second_top_left = point(last_line.start_x, start_y + self.line_height);
4513 path.line_to(second_top_left + curve_height);
4514 if self.corner_radius > Pixels::ZERO {
4515 path.curve_to(second_top_left + curve_width, second_top_left);
4516 }
4517 let first_bottom_left = point(first_line.start_x, second_top_left.y);
4518 path.line_to(first_bottom_left - curve_width);
4519 if self.corner_radius > Pixels::ZERO {
4520 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
4521 }
4522 }
4523
4524 path.line_to(first_top_left + curve_height);
4525 if self.corner_radius > Pixels::ZERO {
4526 path.curve_to(first_top_left + top_curve_width, first_top_left);
4527 }
4528 path.line_to(first_top_right - top_curve_width);
4529
4530 cx.paint_path(path, self.color);
4531 }
4532}
4533
4534pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
4535 (delta.pow(1.5) / 100.0).into()
4536}
4537
4538fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
4539 (delta.pow(1.2) / 300.0).into()
4540}
4541
4542#[cfg(test)]
4543mod tests {
4544 use super::*;
4545 use crate::{
4546 display_map::{BlockDisposition, BlockProperties},
4547 editor_tests::{init_test, update_test_language_settings},
4548 Editor, MultiBuffer,
4549 };
4550 use gpui::{TestAppContext, VisualTestContext};
4551 use language::language_settings;
4552 use log::info;
4553 use std::num::NonZeroU32;
4554 use util::test::sample_text;
4555
4556 #[gpui::test]
4557 fn test_shape_line_numbers(cx: &mut TestAppContext) {
4558 init_test(cx, |_| {});
4559 let window = cx.add_window(|cx| {
4560 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4561 Editor::new(EditorMode::Full, buffer, None, cx)
4562 });
4563
4564 let editor = window.root(cx).unwrap();
4565 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4566 let element = EditorElement::new(&editor, style);
4567 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
4568
4569 let layouts = cx
4570 .update_window(*window, |_, cx| {
4571 element
4572 .layout_line_numbers(
4573 0..6,
4574 (0..6).map(Some),
4575 &Default::default(),
4576 Some(DisplayPoint::new(0, 0)),
4577 &snapshot,
4578 cx,
4579 )
4580 .0
4581 })
4582 .unwrap();
4583 assert_eq!(layouts.len(), 6);
4584
4585 let relative_rows = window
4586 .update(cx, |editor, cx| {
4587 let snapshot = editor.snapshot(cx);
4588 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
4589 })
4590 .unwrap();
4591 assert_eq!(relative_rows[&0], 3);
4592 assert_eq!(relative_rows[&1], 2);
4593 assert_eq!(relative_rows[&2], 1);
4594 // current line has no relative number
4595 assert_eq!(relative_rows[&4], 1);
4596 assert_eq!(relative_rows[&5], 2);
4597
4598 // works if cursor is before screen
4599 let relative_rows = window
4600 .update(cx, |editor, cx| {
4601 let snapshot = editor.snapshot(cx);
4602 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
4603 })
4604 .unwrap();
4605 assert_eq!(relative_rows.len(), 3);
4606 assert_eq!(relative_rows[&3], 2);
4607 assert_eq!(relative_rows[&4], 3);
4608 assert_eq!(relative_rows[&5], 4);
4609
4610 // works if cursor is after screen
4611 let relative_rows = window
4612 .update(cx, |editor, cx| {
4613 let snapshot = editor.snapshot(cx);
4614 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
4615 })
4616 .unwrap();
4617 assert_eq!(relative_rows.len(), 3);
4618 assert_eq!(relative_rows[&0], 5);
4619 assert_eq!(relative_rows[&1], 4);
4620 assert_eq!(relative_rows[&2], 3);
4621 }
4622
4623 #[gpui::test]
4624 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
4625 init_test(cx, |_| {});
4626
4627 let window = cx.add_window(|cx| {
4628 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
4629 Editor::new(EditorMode::Full, buffer, None, cx)
4630 });
4631 let cx = &mut VisualTestContext::from_window(*window, cx);
4632 let editor = window.root(cx).unwrap();
4633 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4634
4635 window
4636 .update(cx, |editor, cx| {
4637 editor.cursor_shape = CursorShape::Block;
4638 editor.change_selections(None, cx, |s| {
4639 s.select_ranges([
4640 Point::new(0, 0)..Point::new(1, 0),
4641 Point::new(3, 2)..Point::new(3, 3),
4642 Point::new(5, 6)..Point::new(6, 0),
4643 ]);
4644 });
4645 })
4646 .unwrap();
4647
4648 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
4649 EditorElement::new(&editor, style)
4650 });
4651
4652 assert_eq!(state.selections.len(), 1);
4653 let local_selections = &state.selections[0].1;
4654 assert_eq!(local_selections.len(), 3);
4655 // moves cursor back one line
4656 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
4657 assert_eq!(
4658 local_selections[0].range,
4659 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
4660 );
4661
4662 // moves cursor back one column
4663 assert_eq!(
4664 local_selections[1].range,
4665 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
4666 );
4667 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
4668
4669 // leaves cursor on the max point
4670 assert_eq!(
4671 local_selections[2].range,
4672 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
4673 );
4674 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
4675
4676 // active lines does not include 1 (even though the range of the selection does)
4677 assert_eq!(
4678 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
4679 vec![0, 3, 5, 6]
4680 );
4681
4682 // multi-buffer support
4683 // in DisplayPoint coordinates, this is what we're dealing with:
4684 // 0: [[file
4685 // 1: header]]
4686 // 2: aaaaaa
4687 // 3: bbbbbb
4688 // 4: cccccc
4689 // 5:
4690 // 6: ...
4691 // 7: ffffff
4692 // 8: gggggg
4693 // 9: hhhhhh
4694 // 10:
4695 // 11: [[file
4696 // 12: header]]
4697 // 13: bbbbbb
4698 // 14: cccccc
4699 // 15: dddddd
4700 let window = cx.add_window(|cx| {
4701 let buffer = MultiBuffer::build_multi(
4702 [
4703 (
4704 &(sample_text(8, 6, 'a') + "\n"),
4705 vec![
4706 Point::new(0, 0)..Point::new(3, 0),
4707 Point::new(4, 0)..Point::new(7, 0),
4708 ],
4709 ),
4710 (
4711 &(sample_text(8, 6, 'a') + "\n"),
4712 vec![Point::new(1, 0)..Point::new(3, 0)],
4713 ),
4714 ],
4715 cx,
4716 );
4717 Editor::new(EditorMode::Full, buffer, None, cx)
4718 });
4719 let editor = window.root(cx).unwrap();
4720 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4721 let _state = window.update(cx, |editor, cx| {
4722 editor.cursor_shape = CursorShape::Block;
4723 editor.change_selections(None, cx, |s| {
4724 s.select_display_ranges([
4725 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
4726 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
4727 ]);
4728 });
4729 });
4730
4731 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
4732 EditorElement::new(&editor, style)
4733 });
4734 assert_eq!(state.selections.len(), 1);
4735 let local_selections = &state.selections[0].1;
4736 assert_eq!(local_selections.len(), 2);
4737
4738 // moves cursor on excerpt boundary back a line
4739 // and doesn't allow selection to bleed through
4740 assert_eq!(
4741 local_selections[0].range,
4742 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
4743 );
4744 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
4745 // moves cursor on buffer boundary back two lines
4746 // and doesn't allow selection to bleed through
4747 assert_eq!(
4748 local_selections[1].range,
4749 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
4750 );
4751 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
4752 }
4753
4754 #[gpui::test]
4755 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
4756 init_test(cx, |_| {});
4757
4758 let window = cx.add_window(|cx| {
4759 let buffer = MultiBuffer::build_simple("", cx);
4760 Editor::new(EditorMode::Full, buffer, None, cx)
4761 });
4762 let cx = &mut VisualTestContext::from_window(*window, cx);
4763 let editor = window.root(cx).unwrap();
4764 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4765 window
4766 .update(cx, |editor, cx| {
4767 editor.set_placeholder_text("hello", cx);
4768 editor.insert_blocks(
4769 [BlockProperties {
4770 style: BlockStyle::Fixed,
4771 disposition: BlockDisposition::Above,
4772 height: 3,
4773 position: Anchor::min(),
4774 render: Box::new(|_| div().into_any()),
4775 }],
4776 None,
4777 cx,
4778 );
4779
4780 // Blur the editor so that it displays placeholder text.
4781 cx.blur();
4782 })
4783 .unwrap();
4784
4785 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
4786 EditorElement::new(&editor, style)
4787 });
4788 assert_eq!(state.position_map.line_layouts.len(), 4);
4789 assert_eq!(
4790 state
4791 .line_numbers
4792 .iter()
4793 .map(Option::is_some)
4794 .collect::<Vec<_>>(),
4795 &[false, false, false, true]
4796 );
4797 }
4798
4799 #[gpui::test]
4800 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
4801 const TAB_SIZE: u32 = 4;
4802
4803 let input_text = "\t \t|\t| a b";
4804 let expected_invisibles = vec![
4805 Invisible::Tab {
4806 line_start_offset: 0,
4807 },
4808 Invisible::Whitespace {
4809 line_offset: TAB_SIZE as usize,
4810 },
4811 Invisible::Tab {
4812 line_start_offset: TAB_SIZE as usize + 1,
4813 },
4814 Invisible::Tab {
4815 line_start_offset: TAB_SIZE as usize * 2 + 1,
4816 },
4817 Invisible::Whitespace {
4818 line_offset: TAB_SIZE as usize * 3 + 1,
4819 },
4820 Invisible::Whitespace {
4821 line_offset: TAB_SIZE as usize * 3 + 3,
4822 },
4823 ];
4824 assert_eq!(
4825 expected_invisibles.len(),
4826 input_text
4827 .chars()
4828 .filter(|initial_char| initial_char.is_whitespace())
4829 .count(),
4830 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4831 );
4832
4833 init_test(cx, |s| {
4834 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4835 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
4836 });
4837
4838 let actual_invisibles =
4839 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
4840
4841 assert_eq!(expected_invisibles, actual_invisibles);
4842 }
4843
4844 #[gpui::test]
4845 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
4846 init_test(cx, |s| {
4847 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4848 s.defaults.tab_size = NonZeroU32::new(4);
4849 });
4850
4851 for editor_mode_without_invisibles in [
4852 EditorMode::SingleLine,
4853 EditorMode::AutoHeight { max_lines: 100 },
4854 ] {
4855 let invisibles = collect_invisibles_from_new_editor(
4856 cx,
4857 editor_mode_without_invisibles,
4858 "\t\t\t| | a b",
4859 px(500.0),
4860 );
4861 assert!(invisibles.is_empty(),
4862 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4863 }
4864 }
4865
4866 #[gpui::test]
4867 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4868 let tab_size = 4;
4869 let input_text = "a\tbcd ".repeat(9);
4870 let repeated_invisibles = [
4871 Invisible::Tab {
4872 line_start_offset: 1,
4873 },
4874 Invisible::Whitespace {
4875 line_offset: tab_size as usize + 3,
4876 },
4877 Invisible::Whitespace {
4878 line_offset: tab_size as usize + 4,
4879 },
4880 Invisible::Whitespace {
4881 line_offset: tab_size as usize + 5,
4882 },
4883 ];
4884 let expected_invisibles = std::iter::once(repeated_invisibles)
4885 .cycle()
4886 .take(9)
4887 .flatten()
4888 .collect::<Vec<_>>();
4889 assert_eq!(
4890 expected_invisibles.len(),
4891 input_text
4892 .chars()
4893 .filter(|initial_char| initial_char.is_whitespace())
4894 .count(),
4895 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4896 );
4897 info!("Expected invisibles: {expected_invisibles:?}");
4898
4899 init_test(cx, |_| {});
4900
4901 // Put the same string with repeating whitespace pattern into editors of various size,
4902 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4903 let resize_step = 10.0;
4904 let mut editor_width = 200.0;
4905 while editor_width <= 1000.0 {
4906 update_test_language_settings(cx, |s| {
4907 s.defaults.tab_size = NonZeroU32::new(tab_size);
4908 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4909 s.defaults.preferred_line_length = Some(editor_width as u32);
4910 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4911 });
4912
4913 let actual_invisibles = collect_invisibles_from_new_editor(
4914 cx,
4915 EditorMode::Full,
4916 &input_text,
4917 px(editor_width),
4918 );
4919
4920 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4921 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4922 let mut i = 0;
4923 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4924 i = actual_index;
4925 match expected_invisibles.get(i) {
4926 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4927 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4928 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4929 _ => {
4930 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4931 }
4932 },
4933 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4934 }
4935 }
4936 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4937 assert!(
4938 missing_expected_invisibles.is_empty(),
4939 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4940 );
4941
4942 editor_width += resize_step;
4943 }
4944 }
4945
4946 fn collect_invisibles_from_new_editor(
4947 cx: &mut TestAppContext,
4948 editor_mode: EditorMode,
4949 input_text: &str,
4950 editor_width: Pixels,
4951 ) -> Vec<Invisible> {
4952 info!(
4953 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4954 editor_width.0
4955 );
4956 let window = cx.add_window(|cx| {
4957 let buffer = MultiBuffer::build_simple(&input_text, cx);
4958 Editor::new(editor_mode, buffer, None, cx)
4959 });
4960 let cx = &mut VisualTestContext::from_window(*window, cx);
4961 let editor = window.root(cx).unwrap();
4962 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4963 window
4964 .update(cx, |editor, cx| {
4965 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4966 editor.set_wrap_width(Some(editor_width), cx);
4967 })
4968 .unwrap();
4969 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
4970 EditorElement::new(&editor, style)
4971 });
4972 state
4973 .position_map
4974 .line_layouts
4975 .iter()
4976 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
4977 .cloned()
4978 .collect()
4979 }
4980}
4981
4982pub fn register_action<T: Action>(
4983 view: &View<Editor>,
4984 cx: &mut WindowContext,
4985 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4986) {
4987 let view = view.clone();
4988 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4989 let action = action.downcast_ref().unwrap();
4990 if phase == DispatchPhase::Bubble {
4991 view.update(cx, |editor, cx| {
4992 listener(editor, action, cx);
4993 })
4994 }
4995 })
4996}
4997
4998fn compute_auto_height_layout(
4999 editor: &mut Editor,
5000 max_lines: usize,
5001 max_line_number_width: Pixels,
5002 known_dimensions: Size<Option<Pixels>>,
5003 cx: &mut ViewContext<Editor>,
5004) -> Option<Size<Pixels>> {
5005 let width = known_dimensions.width?;
5006 if let Some(height) = known_dimensions.height {
5007 return Some(size(width, height));
5008 }
5009
5010 let style = editor.style.as_ref().unwrap();
5011 let font_id = cx.text_system().resolve_font(&style.text.font());
5012 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5013 let line_height = style.text.line_height_in_pixels(cx.rem_size());
5014 let em_width = cx
5015 .text_system()
5016 .typographic_bounds(font_id, font_size, 'm')
5017 .unwrap()
5018 .size
5019 .width;
5020
5021 let mut snapshot = editor.snapshot(cx);
5022 let gutter_dimensions =
5023 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
5024
5025 editor.gutter_width = gutter_dimensions.width;
5026 let text_width = width - gutter_dimensions.width;
5027 let overscroll = size(em_width, px(0.));
5028
5029 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
5030 if editor.set_wrap_width(Some(editor_width), cx) {
5031 snapshot = editor.snapshot(cx);
5032 }
5033
5034 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
5035 let height = scroll_height
5036 .max(line_height)
5037 .min(line_height * max_lines as f32);
5038
5039 Some(size(width, height))
5040}