1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::{DoubleClickInMultibuffer, MultiCursorModifier, ShowScrollbar},
7 git::{blame::GitBlame, diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::{
9 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
10 },
11 items::BufferSearchHighlights,
12 mouse_context_menu::{self, MouseContextMenu},
13 scroll::scroll_amount::ScrollAmount,
14 CursorShape, DisplayPoint, DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode,
15 EditorSettings, EditorSnapshot, EditorStyle, GutterDimensions, HalfPageDown, HalfPageUp,
16 HoveredCursor, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, SelectPhase, Selection,
17 SoftWrap, ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
18};
19use anyhow::Result;
20use collections::{BTreeMap, HashMap};
21use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
22use gpui::{
23 anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
24 transparent_black, Action, AnchorCorner, AnyElement, AnyView, AvailableSpace, Bounds,
25 ClipboardItem, ContentMask, Corners, CursorStyle, DispatchPhase, Edges, Element,
26 ElementContext, ElementInputHandler, Entity, Hitbox, Hsla, InteractiveElement, IntoElement,
27 ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent,
28 ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size, Stateful,
29 StatefulInteractiveElement, Style, Styled, TextRun, TextStyle, TextStyleRefinement, View,
30 ViewContext, WindowContext,
31};
32use itertools::Itertools;
33use language::language_settings::ShowWhitespaceSetting;
34use lsp::DiagnosticSeverity;
35use multi_buffer::Anchor;
36use project::{
37 project_settings::{GitGutterSetting, ProjectSettings},
38 ProjectPath,
39};
40use settings::Settings;
41use smallvec::SmallVec;
42use std::{
43 any::TypeId,
44 borrow::Cow,
45 cmp::{self, Ordering},
46 fmt::Write,
47 iter, mem,
48 ops::Range,
49 sync::Arc,
50};
51use sum_tree::Bias;
52use theme::{ActiveTheme, PlayerColor};
53use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
54use ui::{prelude::*, tooltip_container};
55use util::ResultExt;
56use workspace::item::Item;
57
58struct SelectionLayout {
59 head: DisplayPoint,
60 cursor_shape: CursorShape,
61 is_newest: bool,
62 is_local: bool,
63 range: Range<DisplayPoint>,
64 active_rows: Range<u32>,
65 user_name: Option<SharedString>,
66}
67
68impl SelectionLayout {
69 fn new<T: ToPoint + ToDisplayPoint + Clone>(
70 selection: Selection<T>,
71 line_mode: bool,
72 cursor_shape: CursorShape,
73 map: &DisplaySnapshot,
74 is_newest: bool,
75 is_local: bool,
76 user_name: Option<SharedString>,
77 ) -> Self {
78 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
79 let display_selection = point_selection.map(|p| p.to_display_point(map));
80 let mut range = display_selection.range();
81 let mut head = display_selection.head();
82 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
83 ..map.next_line_boundary(point_selection.end).1.row();
84
85 // vim visual line mode
86 if line_mode {
87 let point_range = map.expand_to_line(point_selection.range());
88 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
89 }
90
91 // any vim visual mode (including line mode)
92 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
93 if head.column() > 0 {
94 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
95 } else if head.row() > 0 && head != map.max_point() {
96 head = map.clip_point(
97 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
98 Bias::Left,
99 );
100 // updating range.end is a no-op unless you're cursor is
101 // on the newline containing a multi-buffer divider
102 // in which case the clip_point may have moved the head up
103 // an additional row.
104 range.end = DisplayPoint::new(head.row() + 1, 0);
105 active_rows.end = head.row();
106 }
107 }
108
109 Self {
110 head,
111 cursor_shape,
112 is_newest,
113 is_local,
114 range,
115 active_rows,
116 user_name,
117 }
118 }
119}
120
121pub struct EditorElement {
122 editor: View<Editor>,
123 style: EditorStyle,
124}
125
126impl EditorElement {
127 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
128 Self {
129 editor: editor.clone(),
130 style,
131 }
132 }
133
134 fn register_actions(&self, cx: &mut WindowContext) {
135 let view = &self.editor;
136 view.update(cx, |editor, cx| {
137 for action in editor.editor_actions.iter() {
138 (action)(cx)
139 }
140 });
141
142 crate::rust_analyzer_ext::apply_related_actions(view, cx);
143 register_action(view, cx, Editor::move_left);
144 register_action(view, cx, Editor::move_right);
145 register_action(view, cx, Editor::move_down);
146 register_action(view, cx, Editor::move_down_by_lines);
147 register_action(view, cx, Editor::select_down_by_lines);
148 register_action(view, cx, Editor::move_up);
149 register_action(view, cx, Editor::move_up_by_lines);
150 register_action(view, cx, Editor::select_up_by_lines);
151 register_action(view, cx, Editor::cancel);
152 register_action(view, cx, Editor::newline);
153 register_action(view, cx, Editor::newline_above);
154 register_action(view, cx, Editor::newline_below);
155 register_action(view, cx, Editor::backspace);
156 register_action(view, cx, Editor::delete);
157 register_action(view, cx, Editor::tab);
158 register_action(view, cx, Editor::tab_prev);
159 register_action(view, cx, Editor::indent);
160 register_action(view, cx, Editor::outdent);
161 register_action(view, cx, Editor::delete_line);
162 register_action(view, cx, Editor::join_lines);
163 register_action(view, cx, Editor::sort_lines_case_sensitive);
164 register_action(view, cx, Editor::sort_lines_case_insensitive);
165 register_action(view, cx, Editor::reverse_lines);
166 register_action(view, cx, Editor::shuffle_lines);
167 register_action(view, cx, Editor::convert_to_upper_case);
168 register_action(view, cx, Editor::convert_to_lower_case);
169 register_action(view, cx, Editor::convert_to_title_case);
170 register_action(view, cx, Editor::convert_to_snake_case);
171 register_action(view, cx, Editor::convert_to_kebab_case);
172 register_action(view, cx, Editor::convert_to_upper_camel_case);
173 register_action(view, cx, Editor::convert_to_lower_camel_case);
174 register_action(view, cx, Editor::delete_to_previous_word_start);
175 register_action(view, cx, Editor::delete_to_previous_subword_start);
176 register_action(view, cx, Editor::delete_to_next_word_end);
177 register_action(view, cx, Editor::delete_to_next_subword_end);
178 register_action(view, cx, Editor::delete_to_beginning_of_line);
179 register_action(view, cx, Editor::delete_to_end_of_line);
180 register_action(view, cx, Editor::cut_to_end_of_line);
181 register_action(view, cx, Editor::duplicate_line_up);
182 register_action(view, cx, Editor::duplicate_line_down);
183 register_action(view, cx, Editor::move_line_up);
184 register_action(view, cx, Editor::move_line_down);
185 register_action(view, cx, Editor::transpose);
186 register_action(view, cx, Editor::cut);
187 register_action(view, cx, Editor::copy);
188 register_action(view, cx, Editor::paste);
189 register_action(view, cx, Editor::undo);
190 register_action(view, cx, Editor::redo);
191 register_action(view, cx, Editor::move_page_up);
192 register_action(view, cx, Editor::move_page_down);
193 register_action(view, cx, Editor::next_screen);
194 register_action(view, cx, Editor::scroll_cursor_top);
195 register_action(view, cx, Editor::scroll_cursor_center);
196 register_action(view, cx, Editor::scroll_cursor_bottom);
197 register_action(view, cx, |editor, _: &LineDown, cx| {
198 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
199 });
200 register_action(view, cx, |editor, _: &LineUp, cx| {
201 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
202 });
203 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
204 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
205 });
206 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
207 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
208 });
209 register_action(view, cx, |editor, _: &PageDown, cx| {
210 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
211 });
212 register_action(view, cx, |editor, _: &PageUp, cx| {
213 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
214 });
215 register_action(view, cx, Editor::move_to_previous_word_start);
216 register_action(view, cx, Editor::move_to_previous_subword_start);
217 register_action(view, cx, Editor::move_to_next_word_end);
218 register_action(view, cx, Editor::move_to_next_subword_end);
219 register_action(view, cx, Editor::move_to_beginning_of_line);
220 register_action(view, cx, Editor::move_to_end_of_line);
221 register_action(view, cx, Editor::move_to_start_of_paragraph);
222 register_action(view, cx, Editor::move_to_end_of_paragraph);
223 register_action(view, cx, Editor::move_to_beginning);
224 register_action(view, cx, Editor::move_to_end);
225 register_action(view, cx, Editor::select_up);
226 register_action(view, cx, Editor::select_down);
227 register_action(view, cx, Editor::select_left);
228 register_action(view, cx, Editor::select_right);
229 register_action(view, cx, Editor::select_to_previous_word_start);
230 register_action(view, cx, Editor::select_to_previous_subword_start);
231 register_action(view, cx, Editor::select_to_next_word_end);
232 register_action(view, cx, Editor::select_to_next_subword_end);
233 register_action(view, cx, Editor::select_to_beginning_of_line);
234 register_action(view, cx, Editor::select_to_end_of_line);
235 register_action(view, cx, Editor::select_to_start_of_paragraph);
236 register_action(view, cx, Editor::select_to_end_of_paragraph);
237 register_action(view, cx, Editor::select_to_beginning);
238 register_action(view, cx, Editor::select_to_end);
239 register_action(view, cx, Editor::select_all);
240 register_action(view, cx, |editor, action, cx| {
241 editor.select_all_matches(action, cx).log_err();
242 });
243 register_action(view, cx, Editor::select_line);
244 register_action(view, cx, Editor::split_selection_into_lines);
245 register_action(view, cx, Editor::add_selection_above);
246 register_action(view, cx, Editor::add_selection_below);
247 register_action(view, cx, |editor, action, cx| {
248 editor.select_next(action, cx).log_err();
249 });
250 register_action(view, cx, |editor, action, cx| {
251 editor.select_previous(action, cx).log_err();
252 });
253 register_action(view, cx, Editor::toggle_comments);
254 register_action(view, cx, Editor::select_larger_syntax_node);
255 register_action(view, cx, Editor::select_smaller_syntax_node);
256 register_action(view, cx, Editor::move_to_enclosing_bracket);
257 register_action(view, cx, Editor::undo_selection);
258 register_action(view, cx, Editor::redo_selection);
259 register_action(view, cx, Editor::go_to_diagnostic);
260 register_action(view, cx, Editor::go_to_prev_diagnostic);
261 register_action(view, cx, Editor::go_to_hunk);
262 register_action(view, cx, Editor::go_to_prev_hunk);
263 register_action(view, cx, |editor, a, cx| {
264 editor.go_to_definition(a, cx).detach_and_log_err(cx);
265 });
266 register_action(view, cx, |editor, a, cx| {
267 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
268 });
269 register_action(view, cx, |editor, a, cx| {
270 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
271 });
272 register_action(view, cx, |editor, a, cx| {
273 editor
274 .go_to_implementation_split(a, cx)
275 .detach_and_log_err(cx);
276 });
277 register_action(view, cx, |editor, a, cx| {
278 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
279 });
280 register_action(view, cx, |editor, a, cx| {
281 editor
282 .go_to_type_definition_split(a, cx)
283 .detach_and_log_err(cx);
284 });
285 register_action(view, cx, Editor::open_url);
286 register_action(view, cx, Editor::fold);
287 register_action(view, cx, Editor::fold_at);
288 register_action(view, cx, Editor::unfold_lines);
289 register_action(view, cx, Editor::unfold_at);
290 register_action(view, cx, Editor::fold_selected_ranges);
291 register_action(view, cx, Editor::show_completions);
292 register_action(view, cx, Editor::toggle_code_actions);
293 register_action(view, cx, Editor::open_excerpts);
294 register_action(view, cx, Editor::open_excerpts_in_split);
295 register_action(view, cx, Editor::toggle_soft_wrap);
296 register_action(view, cx, Editor::toggle_line_numbers);
297 register_action(view, cx, Editor::toggle_inlay_hints);
298 register_action(view, cx, hover_popover::hover);
299 register_action(view, cx, Editor::reveal_in_finder);
300 register_action(view, cx, Editor::copy_path);
301 register_action(view, cx, Editor::copy_relative_path);
302 register_action(view, cx, Editor::copy_highlight_json);
303 register_action(view, cx, Editor::copy_permalink_to_line);
304 register_action(view, cx, Editor::open_permalink_to_line);
305 register_action(view, cx, Editor::toggle_git_blame);
306 register_action(view, cx, |editor, action, cx| {
307 if let Some(task) = editor.format(action, cx) {
308 task.detach_and_log_err(cx);
309 } else {
310 cx.propagate();
311 }
312 });
313 register_action(view, cx, Editor::restart_language_server);
314 register_action(view, cx, Editor::show_character_palette);
315 register_action(view, cx, |editor, action, cx| {
316 if let Some(task) = editor.confirm_completion(action, cx) {
317 task.detach_and_log_err(cx);
318 } else {
319 cx.propagate();
320 }
321 });
322 register_action(view, cx, |editor, action, cx| {
323 if let Some(task) = editor.confirm_code_action(action, cx) {
324 task.detach_and_log_err(cx);
325 } else {
326 cx.propagate();
327 }
328 });
329 register_action(view, cx, |editor, action, cx| {
330 if let Some(task) = editor.rename(action, cx) {
331 task.detach_and_log_err(cx);
332 } else {
333 cx.propagate();
334 }
335 });
336 register_action(view, cx, |editor, action, cx| {
337 if let Some(task) = editor.confirm_rename(action, cx) {
338 task.detach_and_log_err(cx);
339 } else {
340 cx.propagate();
341 }
342 });
343 register_action(view, cx, |editor, action, cx| {
344 if let Some(task) = editor.find_all_references(action, cx) {
345 task.detach_and_log_err(cx);
346 } else {
347 cx.propagate();
348 }
349 });
350 register_action(view, cx, Editor::next_inline_completion);
351 register_action(view, cx, Editor::previous_inline_completion);
352 register_action(view, cx, Editor::show_inline_completion);
353 register_action(view, cx, Editor::context_menu_first);
354 register_action(view, cx, Editor::context_menu_prev);
355 register_action(view, cx, Editor::context_menu_next);
356 register_action(view, cx, Editor::context_menu_last);
357 register_action(view, cx, Editor::display_cursor_names);
358 register_action(view, cx, Editor::unique_lines_case_insensitive);
359 register_action(view, cx, Editor::unique_lines_case_sensitive);
360 register_action(view, cx, Editor::accept_partial_inline_completion);
361 register_action(view, cx, Editor::revert_selected_hunks);
362 }
363
364 fn register_key_listeners(&self, cx: &mut ElementContext, layout: &EditorLayout) {
365 let position_map = layout.position_map.clone();
366 cx.on_key_event({
367 let editor = self.editor.clone();
368 let text_hitbox = layout.text_hitbox.clone();
369 move |event: &ModifiersChangedEvent, phase, cx| {
370 if phase != DispatchPhase::Bubble {
371 return;
372 }
373
374 editor.update(cx, |editor, cx| {
375 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
376 })
377 }
378 });
379 }
380
381 fn modifiers_changed(
382 editor: &mut Editor,
383 event: &ModifiersChangedEvent,
384 position_map: &PositionMap,
385 text_hitbox: &Hitbox,
386 cx: &mut ViewContext<Editor>,
387 ) {
388 let mouse_position = cx.mouse_position();
389 if !text_hitbox.is_hovered(cx) {
390 return;
391 }
392
393 editor.update_hovered_link(
394 position_map.point_for_position(text_hitbox.bounds, mouse_position),
395 &position_map.snapshot,
396 event.modifiers,
397 cx,
398 )
399 }
400
401 fn mouse_left_down(
402 editor: &mut Editor,
403 event: &MouseDownEvent,
404 position_map: &PositionMap,
405 text_hitbox: &Hitbox,
406 gutter_hitbox: &Hitbox,
407 cx: &mut ViewContext<Editor>,
408 ) {
409 if cx.default_prevented() {
410 return;
411 }
412
413 let mut click_count = event.click_count;
414 let mut modifiers = event.modifiers;
415
416 if gutter_hitbox.is_hovered(cx) {
417 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
418 } else if !text_hitbox.is_hovered(cx) {
419 return;
420 }
421
422 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
423 match EditorSettings::get_global(cx).double_click_in_multibuffer {
424 DoubleClickInMultibuffer::Select => {
425 // do nothing special on double click, all selection logic is below
426 }
427 DoubleClickInMultibuffer::Open => {
428 if modifiers.alt {
429 // if double click is made with alt, pretend it's a regular double click without opening and alt,
430 // and run the selection logic.
431 modifiers.alt = false;
432 } else {
433 // if double click is made without alt, open the corresponding excerp
434 editor.open_excerpts(&OpenExcerpts, cx);
435 return;
436 }
437 }
438 }
439 }
440
441 let point_for_position =
442 position_map.point_for_position(text_hitbox.bounds, event.position);
443 let position = point_for_position.previous_valid;
444 if modifiers.shift && modifiers.alt {
445 editor.select(
446 SelectPhase::BeginColumnar {
447 position,
448 goal_column: point_for_position.exact_unclipped.column(),
449 },
450 cx,
451 );
452 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
453 {
454 editor.select(
455 SelectPhase::Extend {
456 position,
457 click_count,
458 },
459 cx,
460 );
461 } else {
462 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
463 let multi_cursor_modifier = match multi_cursor_setting {
464 MultiCursorModifier::Alt => modifiers.alt,
465 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
466 };
467 editor.select(
468 SelectPhase::Begin {
469 position,
470 add: multi_cursor_modifier,
471 click_count,
472 },
473 cx,
474 );
475 }
476
477 cx.stop_propagation();
478 }
479
480 fn mouse_right_down(
481 editor: &mut Editor,
482 event: &MouseDownEvent,
483 position_map: &PositionMap,
484 text_hitbox: &Hitbox,
485 cx: &mut ViewContext<Editor>,
486 ) {
487 if !text_hitbox.is_hovered(cx) {
488 return;
489 }
490 let point_for_position =
491 position_map.point_for_position(text_hitbox.bounds, event.position);
492 mouse_context_menu::deploy_context_menu(
493 editor,
494 event.position,
495 point_for_position.previous_valid,
496 cx,
497 );
498 cx.stop_propagation();
499 }
500
501 fn mouse_up(
502 editor: &mut Editor,
503 event: &MouseUpEvent,
504 position_map: &PositionMap,
505 text_hitbox: &Hitbox,
506 cx: &mut ViewContext<Editor>,
507 ) {
508 let end_selection = editor.has_pending_selection();
509 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
510
511 if end_selection {
512 editor.select(SelectPhase::End, cx);
513 }
514
515 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
516 let multi_cursor_modifier = match multi_cursor_setting {
517 MultiCursorModifier::Alt => event.modifiers.secondary(),
518 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
519 };
520
521 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
522 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
523 editor.handle_click_hovered_link(point, event.modifiers, cx);
524
525 cx.stop_propagation();
526 } else if end_selection {
527 cx.stop_propagation();
528 }
529 }
530
531 fn mouse_dragged(
532 editor: &mut Editor,
533 event: &MouseMoveEvent,
534 position_map: &PositionMap,
535 text_bounds: Bounds<Pixels>,
536 cx: &mut ViewContext<Editor>,
537 ) {
538 if !editor.has_pending_selection() {
539 return;
540 }
541
542 let point_for_position = position_map.point_for_position(text_bounds, event.position);
543 let mut scroll_delta = gpui::Point::<f32>::default();
544 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
545 let top = text_bounds.origin.y + vertical_margin;
546 let bottom = text_bounds.lower_left().y - vertical_margin;
547 if event.position.y < top {
548 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
549 }
550 if event.position.y > bottom {
551 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
552 }
553
554 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
555 let left = text_bounds.origin.x + horizontal_margin;
556 let right = text_bounds.upper_right().x - horizontal_margin;
557 if event.position.x < left {
558 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
559 }
560 if event.position.x > right {
561 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
562 }
563
564 editor.select(
565 SelectPhase::Update {
566 position: point_for_position.previous_valid,
567 goal_column: point_for_position.exact_unclipped.column(),
568 scroll_delta,
569 },
570 cx,
571 );
572 }
573
574 fn mouse_moved(
575 editor: &mut Editor,
576 event: &MouseMoveEvent,
577 position_map: &PositionMap,
578 text_hitbox: &Hitbox,
579 gutter_hitbox: &Hitbox,
580 cx: &mut ViewContext<Editor>,
581 ) {
582 let modifiers = event.modifiers;
583 let gutter_hovered = gutter_hitbox.is_hovered(cx);
584 editor.set_gutter_hovered(gutter_hovered, cx);
585
586 // Don't trigger hover popover if mouse is hovering over context menu
587 if text_hitbox.is_hovered(cx) {
588 let point_for_position =
589 position_map.point_for_position(text_hitbox.bounds, event.position);
590
591 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
592
593 if let Some(point) = point_for_position.as_valid() {
594 hover_at(editor, Some(point), cx);
595 Self::update_visible_cursor(editor, point, position_map, cx);
596 } else {
597 hover_at(editor, None, cx);
598 }
599 } else {
600 editor.hide_hovered_link(cx);
601 hover_at(editor, None, cx);
602 if gutter_hovered {
603 cx.stop_propagation();
604 }
605 }
606 }
607
608 fn update_visible_cursor(
609 editor: &mut Editor,
610 point: DisplayPoint,
611 position_map: &PositionMap,
612 cx: &mut ViewContext<Editor>,
613 ) {
614 let snapshot = &position_map.snapshot;
615 let Some(hub) = editor.collaboration_hub() else {
616 return;
617 };
618 let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
619 ..DisplayPoint::new(
620 point.row(),
621 (point.column() + 1).min(snapshot.line_len(point.row())),
622 );
623
624 let range = snapshot
625 .buffer_snapshot
626 .anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
627 ..snapshot
628 .buffer_snapshot
629 .anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
630
631 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
632 return;
633 };
634 let key = crate::HoveredCursor {
635 replica_id: selection.replica_id,
636 selection_id: selection.selection.id,
637 };
638 editor.hovered_cursors.insert(
639 key.clone(),
640 cx.spawn(|editor, mut cx| async move {
641 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
642 editor
643 .update(&mut cx, |editor, cx| {
644 editor.hovered_cursors.remove(&key);
645 cx.notify();
646 })
647 .ok();
648 }),
649 );
650 cx.notify()
651 }
652
653 fn layout_selections(
654 &self,
655 start_anchor: Anchor,
656 end_anchor: Anchor,
657 snapshot: &EditorSnapshot,
658 start_row: u32,
659 end_row: u32,
660 cx: &mut ElementContext,
661 ) -> (
662 Vec<(PlayerColor, Vec<SelectionLayout>)>,
663 BTreeMap<u32, bool>,
664 Option<DisplayPoint>,
665 ) {
666 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
667 let mut active_rows = BTreeMap::new();
668 let mut newest_selection_head = None;
669 let editor = self.editor.read(cx);
670
671 if editor.show_local_selections {
672 let mut local_selections: Vec<Selection<Point>> = editor
673 .selections
674 .disjoint_in_range(start_anchor..end_anchor, cx);
675 local_selections.extend(editor.selections.pending(cx));
676 let mut layouts = Vec::new();
677 let newest = editor.selections.newest(cx);
678 for selection in local_selections.drain(..) {
679 let is_empty = selection.start == selection.end;
680 let is_newest = selection == newest;
681
682 let layout = SelectionLayout::new(
683 selection,
684 editor.selections.line_mode,
685 editor.cursor_shape,
686 &snapshot.display_snapshot,
687 is_newest,
688 editor.leader_peer_id.is_none(),
689 None,
690 );
691 if is_newest {
692 newest_selection_head = Some(layout.head);
693 }
694
695 for row in cmp::max(layout.active_rows.start, start_row)
696 ..=cmp::min(layout.active_rows.end, end_row)
697 {
698 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
699 *contains_non_empty_selection |= !is_empty;
700 }
701 layouts.push(layout);
702 }
703
704 let player = if editor.read_only(cx) {
705 cx.theme().players().read_only()
706 } else {
707 self.style.local_player
708 };
709
710 selections.push((player, layouts));
711 }
712
713 if let Some(collaboration_hub) = &editor.collaboration_hub {
714 // When following someone, render the local selections in their color.
715 if let Some(leader_id) = editor.leader_peer_id {
716 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
717 if let Some(participant_index) = collaboration_hub
718 .user_participant_indices(cx)
719 .get(&collaborator.user_id)
720 {
721 if let Some((local_selection_style, _)) = selections.first_mut() {
722 *local_selection_style = cx
723 .theme()
724 .players()
725 .color_for_participant(participant_index.0);
726 }
727 }
728 }
729 }
730
731 let mut remote_selections = HashMap::default();
732 for selection in snapshot.remote_selections_in_range(
733 &(start_anchor..end_anchor),
734 collaboration_hub.as_ref(),
735 cx,
736 ) {
737 let selection_style = if let Some(participant_index) = selection.participant_index {
738 cx.theme()
739 .players()
740 .color_for_participant(participant_index.0)
741 } else {
742 cx.theme().players().absent()
743 };
744
745 // Don't re-render the leader's selections, since the local selections
746 // match theirs.
747 if Some(selection.peer_id) == editor.leader_peer_id {
748 continue;
749 }
750 let key = HoveredCursor {
751 replica_id: selection.replica_id,
752 selection_id: selection.selection.id,
753 };
754
755 let is_shown =
756 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
757
758 remote_selections
759 .entry(selection.replica_id)
760 .or_insert((selection_style, Vec::new()))
761 .1
762 .push(SelectionLayout::new(
763 selection.selection,
764 selection.line_mode,
765 selection.cursor_shape,
766 &snapshot.display_snapshot,
767 false,
768 false,
769 if is_shown { selection.user_name } else { None },
770 ));
771 }
772
773 selections.extend(remote_selections.into_values());
774 }
775 (selections, active_rows, newest_selection_head)
776 }
777
778 #[allow(clippy::too_many_arguments)]
779 fn layout_folds(
780 &self,
781 snapshot: &EditorSnapshot,
782 content_origin: gpui::Point<Pixels>,
783 visible_anchor_range: Range<Anchor>,
784 visible_display_row_range: Range<u32>,
785 scroll_pixel_position: gpui::Point<Pixels>,
786 line_height: Pixels,
787 line_layouts: &[LineWithInvisibles],
788 cx: &mut ElementContext,
789 ) -> Vec<FoldLayout> {
790 snapshot
791 .folds_in_range(visible_anchor_range.clone())
792 .filter_map(|fold| {
793 let fold_range = fold.range.clone();
794 let display_range = fold.range.start.to_display_point(&snapshot)
795 ..fold.range.end.to_display_point(&snapshot);
796 debug_assert_eq!(display_range.start.row(), display_range.end.row());
797 let row = display_range.start.row();
798 debug_assert!(row < visible_display_row_range.end);
799 let line_layout = line_layouts
800 .get((row - visible_display_row_range.start) as usize)
801 .map(|l| &l.line)?;
802
803 let start_x = content_origin.x
804 + line_layout.x_for_index(display_range.start.column() as usize)
805 - scroll_pixel_position.x;
806 let start_y = content_origin.y + row as f32 * line_height - scroll_pixel_position.y;
807 let end_x = content_origin.x
808 + line_layout.x_for_index(display_range.end.column() as usize)
809 - scroll_pixel_position.x;
810
811 let fold_bounds = Bounds {
812 origin: point(start_x, start_y),
813 size: size(end_x - start_x, line_height),
814 };
815
816 let mut hover_element = div()
817 .id(fold.id)
818 .size_full()
819 .cursor_pointer()
820 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
821 .on_click(
822 cx.listener_for(&self.editor, move |editor: &mut Editor, _, cx| {
823 editor.unfold_ranges(
824 [fold_range.start..fold_range.end],
825 true,
826 false,
827 cx,
828 );
829 cx.stop_propagation();
830 }),
831 )
832 .into_any();
833 hover_element.layout(fold_bounds.origin, fold_bounds.size.into(), cx);
834 Some(FoldLayout {
835 display_range,
836 hover_element,
837 })
838 })
839 .collect()
840 }
841
842 #[allow(clippy::too_many_arguments)]
843 fn layout_cursors(
844 &self,
845 snapshot: &EditorSnapshot,
846 selections: &[(PlayerColor, Vec<SelectionLayout>)],
847 visible_display_row_range: Range<u32>,
848 line_layouts: &[LineWithInvisibles],
849 text_hitbox: &Hitbox,
850 content_origin: gpui::Point<Pixels>,
851 scroll_pixel_position: gpui::Point<Pixels>,
852 line_height: Pixels,
853 em_width: Pixels,
854 cx: &mut ElementContext,
855 ) -> Vec<CursorLayout> {
856 self.editor.update(cx, |editor, cx| {
857 let mut cursors = Vec::new();
858 for (player_color, selections) in selections {
859 for selection in selections {
860 let cursor_position = selection.head;
861 if (selection.is_local && !editor.show_local_cursors(cx))
862 || !visible_display_row_range.contains(&cursor_position.row())
863 {
864 continue;
865 }
866
867 let cursor_row_layout = &line_layouts
868 [(cursor_position.row() - visible_display_row_range.start) as usize]
869 .line;
870 let cursor_column = cursor_position.column() as usize;
871
872 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
873 let mut block_width =
874 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
875 if block_width == Pixels::ZERO {
876 block_width = em_width;
877 }
878 let block_text = if let CursorShape::Block = selection.cursor_shape {
879 snapshot.display_chars_at(cursor_position).next().and_then(
880 |(character, _)| {
881 let text = if character == '\n' {
882 SharedString::from(" ")
883 } else {
884 SharedString::from(character.to_string())
885 };
886 let len = text.len();
887 cx.text_system()
888 .shape_line(
889 text,
890 cursor_row_layout.font_size,
891 &[TextRun {
892 len,
893 font: self.style.text.font(),
894 color: self.style.background,
895 background_color: None,
896 strikethrough: None,
897 underline: None,
898 }],
899 )
900 .log_err()
901 },
902 )
903 } else {
904 None
905 };
906
907 let x = cursor_character_x - scroll_pixel_position.x;
908 let y = (cursor_position.row() as f32 - scroll_pixel_position.y / line_height)
909 * line_height;
910 if selection.is_newest {
911 editor.pixel_position_of_newest_cursor = Some(point(
912 text_hitbox.origin.x + x + block_width / 2.,
913 text_hitbox.origin.y + y + line_height / 2.,
914 ))
915 }
916
917 let mut cursor = CursorLayout {
918 color: player_color.cursor,
919 block_width,
920 origin: point(x, y),
921 line_height,
922 shape: selection.cursor_shape,
923 block_text,
924 cursor_name: None,
925 };
926 let cursor_name = selection.user_name.clone().map(|name| CursorName {
927 string: name,
928 color: self.style.background,
929 is_top_row: cursor_position.row() == 0,
930 });
931 cx.with_element_context(|cx| cursor.layout(content_origin, cursor_name, cx));
932 cursors.push(cursor);
933 }
934 }
935 cursors
936 })
937 }
938
939 fn layout_scrollbar(
940 &self,
941 snapshot: &EditorSnapshot,
942 bounds: Bounds<Pixels>,
943 scroll_position: gpui::Point<f32>,
944 line_height: Pixels,
945 height_in_lines: f32,
946 cx: &mut ElementContext,
947 ) -> Option<ScrollbarLayout> {
948 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
949 let show_scrollbars = match scrollbar_settings.show {
950 ShowScrollbar::Auto => {
951 let editor = self.editor.read(cx);
952 let is_singleton = editor.is_singleton(cx);
953 // Git
954 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
955 ||
956 // Selections
957 (is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
958 ||
959 // Symbols Selections
960 (is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
961 ||
962 // Diagnostics
963 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
964 ||
965 // Scrollmanager
966 editor.scroll_manager.scrollbars_visible()
967 }
968 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
969 ShowScrollbar::Always => true,
970 ShowScrollbar::Never => false,
971 };
972 if snapshot.mode != EditorMode::Full {
973 return None;
974 }
975
976 let visible_row_range = scroll_position.y..scroll_position.y + height_in_lines;
977
978 // If a drag took place after we started dragging the scrollbar,
979 // cancel the scrollbar drag.
980 if cx.has_active_drag() {
981 self.editor.update(cx, |editor, cx| {
982 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
983 });
984 }
985
986 let track_bounds = Bounds::from_corners(
987 point(self.scrollbar_left(&bounds), bounds.origin.y),
988 point(bounds.lower_right().x, bounds.lower_left().y),
989 );
990
991 let scroll_height = snapshot.max_point().row() as f32 + height_in_lines;
992 let mut height = bounds.size.height;
993 let mut first_row_y_offset = px(0.0);
994
995 // Impose a minimum height on the scrollbar thumb
996 let row_height = height / scroll_height;
997 let min_thumb_height = line_height;
998 let thumb_height = height_in_lines * row_height;
999 if thumb_height < min_thumb_height {
1000 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1001 height -= min_thumb_height - thumb_height;
1002 }
1003
1004 Some(ScrollbarLayout {
1005 hitbox: cx.insert_hitbox(track_bounds, false),
1006 visible_row_range,
1007 height,
1008 scroll_height,
1009 first_row_y_offset,
1010 row_height,
1011 visible: show_scrollbars,
1012 })
1013 }
1014
1015 #[allow(clippy::too_many_arguments)]
1016 fn layout_gutter_fold_indicators(
1017 &self,
1018 fold_statuses: Vec<Option<(FoldStatus, u32, bool)>>,
1019 line_height: Pixels,
1020 gutter_dimensions: &GutterDimensions,
1021 gutter_settings: crate::editor_settings::Gutter,
1022 scroll_pixel_position: gpui::Point<Pixels>,
1023 gutter_hitbox: &Hitbox,
1024 cx: &mut ElementContext,
1025 ) -> Vec<Option<AnyElement>> {
1026 let mut indicators = self.editor.update(cx, |editor, cx| {
1027 editor.render_fold_indicators(
1028 fold_statuses,
1029 &self.style,
1030 editor.gutter_hovered,
1031 line_height,
1032 gutter_dimensions.margin,
1033 cx,
1034 )
1035 });
1036
1037 for (ix, fold_indicator) in indicators.iter_mut().enumerate() {
1038 if let Some(fold_indicator) = fold_indicator {
1039 debug_assert!(gutter_settings.folds);
1040 let available_space = size(
1041 AvailableSpace::MinContent,
1042 AvailableSpace::Definite(line_height * 0.55),
1043 );
1044 let fold_indicator_size = fold_indicator.measure(available_space, cx);
1045
1046 let position = point(
1047 gutter_dimensions.width - gutter_dimensions.right_padding,
1048 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1049 );
1050 let centering_offset = point(
1051 (gutter_dimensions.right_padding + gutter_dimensions.margin
1052 - fold_indicator_size.width)
1053 / 2.,
1054 (line_height - fold_indicator_size.height) / 2.,
1055 );
1056 let origin = gutter_hitbox.origin + position + centering_offset;
1057 fold_indicator.layout(origin, available_space, cx);
1058 }
1059 }
1060
1061 indicators
1062 }
1063
1064 //Folds contained in a hunk are ignored apart from shrinking visual size
1065 //If a fold contains any hunks then that fold line is marked as modified
1066 fn layout_git_gutters(
1067 &self,
1068 display_rows: Range<u32>,
1069 snapshot: &EditorSnapshot,
1070 ) -> Vec<DisplayDiffHunk> {
1071 let buffer_snapshot = &snapshot.buffer_snapshot;
1072
1073 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1074 .to_point(snapshot)
1075 .row;
1076 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1077 .to_point(snapshot)
1078 .row;
1079
1080 buffer_snapshot
1081 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1082 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1083 .dedup()
1084 .collect()
1085 }
1086
1087 #[allow(clippy::too_many_arguments)]
1088 fn layout_blame_entries(
1089 &self,
1090 buffer_rows: impl Iterator<Item = Option<u32>>,
1091 em_width: Pixels,
1092 scroll_position: gpui::Point<f32>,
1093 line_height: Pixels,
1094 gutter_hitbox: &Hitbox,
1095 max_width: Option<Pixels>,
1096 cx: &mut ElementContext,
1097 ) -> Option<Vec<AnyElement>> {
1098 let Some(blame) = self.editor.read(cx).blame.as_ref().cloned() else {
1099 return None;
1100 };
1101
1102 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1103 blame.blame_for_rows(buffer_rows, cx).collect()
1104 });
1105
1106 let width = if let Some(max_width) = max_width {
1107 AvailableSpace::Definite(max_width)
1108 } else {
1109 AvailableSpace::MaxContent
1110 };
1111 let scroll_top = scroll_position.y * line_height;
1112 let start_x = em_width * 1;
1113
1114 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1115 let text_style = &self.style.text;
1116
1117 let shaped_lines = blamed_rows
1118 .into_iter()
1119 .enumerate()
1120 .flat_map(|(ix, blame_entry)| {
1121 if let Some(blame_entry) = blame_entry {
1122 let mut element = render_blame_entry(
1123 ix,
1124 &blame,
1125 blame_entry,
1126 text_style,
1127 &mut last_used_color,
1128 self.editor.clone(),
1129 cx,
1130 );
1131
1132 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1133 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1134
1135 element.layout(absolute_offset, size(width, AvailableSpace::MinContent), cx);
1136
1137 Some(element)
1138 } else {
1139 None
1140 }
1141 })
1142 .collect();
1143
1144 Some(shaped_lines)
1145 }
1146
1147 fn layout_code_actions_indicator(
1148 &self,
1149 line_height: Pixels,
1150 newest_selection_head: DisplayPoint,
1151 scroll_pixel_position: gpui::Point<Pixels>,
1152 gutter_dimensions: &GutterDimensions,
1153 gutter_hitbox: &Hitbox,
1154 cx: &mut ElementContext,
1155 ) -> Option<AnyElement> {
1156 let mut active = false;
1157 let mut button = None;
1158 self.editor.update(cx, |editor, cx| {
1159 active = matches!(
1160 editor.context_menu.read().as_ref(),
1161 Some(crate::ContextMenu::CodeActions(_))
1162 );
1163 button = editor.render_code_actions_indicator(&self.style, active, cx);
1164 });
1165
1166 let mut button = button?.into_any_element();
1167 let available_space = size(
1168 AvailableSpace::MinContent,
1169 AvailableSpace::Definite(line_height),
1170 );
1171 let indicator_size = button.measure(available_space, cx);
1172
1173 let blame_width = gutter_dimensions
1174 .git_blame_entries_width
1175 .unwrap_or(Pixels::ZERO);
1176
1177 let mut x = blame_width;
1178 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
1179 - indicator_size.width
1180 - blame_width;
1181 x += available_width / 2.;
1182
1183 let mut y = newest_selection_head.row() as f32 * line_height - scroll_pixel_position.y;
1184 y += (line_height - indicator_size.height) / 2.;
1185
1186 button.layout(gutter_hitbox.origin + point(x, y), available_space, cx);
1187 Some(button)
1188 }
1189
1190 fn calculate_relative_line_numbers(
1191 &self,
1192 buffer_rows: Vec<Option<u32>>,
1193 rows: &Range<u32>,
1194 relative_to: Option<u32>,
1195 ) -> HashMap<u32, u32> {
1196 let mut relative_rows: HashMap<u32, u32> = Default::default();
1197 let Some(relative_to) = relative_to else {
1198 return relative_rows;
1199 };
1200
1201 let start = rows.start.min(relative_to);
1202
1203 let head_idx = relative_to - start;
1204 let mut delta = 1;
1205 let mut i = head_idx + 1;
1206 while i < buffer_rows.len() as u32 {
1207 if buffer_rows[i as usize].is_some() {
1208 if rows.contains(&(i + start)) {
1209 relative_rows.insert(i + start, delta);
1210 }
1211 delta += 1;
1212 }
1213 i += 1;
1214 }
1215 delta = 1;
1216 i = head_idx.min(buffer_rows.len() as u32 - 1);
1217 while i > 0 && buffer_rows[i as usize].is_none() {
1218 i -= 1;
1219 }
1220
1221 while i > 0 {
1222 i -= 1;
1223 if buffer_rows[i as usize].is_some() {
1224 if rows.contains(&(i + start)) {
1225 relative_rows.insert(i + start, delta);
1226 }
1227 delta += 1;
1228 }
1229 }
1230
1231 relative_rows
1232 }
1233
1234 fn layout_line_numbers(
1235 &self,
1236 rows: Range<u32>,
1237 buffer_rows: impl Iterator<Item = Option<u32>>,
1238 active_rows: &BTreeMap<u32, bool>,
1239 newest_selection_head: Option<DisplayPoint>,
1240 snapshot: &EditorSnapshot,
1241 cx: &ElementContext,
1242 ) -> (
1243 Vec<Option<ShapedLine>>,
1244 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1245 ) {
1246 let editor = self.editor.read(cx);
1247 let is_singleton = editor.is_singleton(cx);
1248 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1249 let newest = editor.selections.newest::<Point>(cx);
1250 SelectionLayout::new(
1251 newest,
1252 editor.selections.line_mode,
1253 editor.cursor_shape,
1254 &snapshot.display_snapshot,
1255 true,
1256 true,
1257 None,
1258 )
1259 .head
1260 });
1261 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1262 let include_line_numbers =
1263 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full;
1264 let include_fold_statuses =
1265 EditorSettings::get_global(cx).gutter.folds && snapshot.mode == EditorMode::Full;
1266 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1267 let mut fold_statuses = Vec::with_capacity(rows.len());
1268 let mut line_number = String::new();
1269 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1270 let relative_to = if is_relative {
1271 Some(newest_selection_head.row())
1272 } else {
1273 None
1274 };
1275
1276 let buffer_rows = buffer_rows.collect::<Vec<_>>();
1277 let relative_rows =
1278 self.calculate_relative_line_numbers(buffer_rows.clone(), &rows, relative_to);
1279
1280 for (ix, row) in buffer_rows.into_iter().enumerate() {
1281 let display_row = rows.start + ix as u32;
1282 let (active, color) = if active_rows.contains_key(&display_row) {
1283 (true, cx.theme().colors().editor_active_line_number)
1284 } else {
1285 (false, cx.theme().colors().editor_line_number)
1286 };
1287 if let Some(buffer_row) = row {
1288 if include_line_numbers {
1289 line_number.clear();
1290 let default_number = buffer_row + 1;
1291 let number = relative_rows
1292 .get(&(ix as u32 + rows.start))
1293 .unwrap_or(&default_number);
1294 write!(&mut line_number, "{}", number).unwrap();
1295 let run = TextRun {
1296 len: line_number.len(),
1297 font: self.style.text.font(),
1298 color,
1299 background_color: None,
1300 underline: None,
1301 strikethrough: None,
1302 };
1303 let shaped_line = cx
1304 .text_system()
1305 .shape_line(line_number.clone().into(), font_size, &[run])
1306 .unwrap();
1307 shaped_line_numbers.push(Some(shaped_line));
1308 }
1309 if include_fold_statuses {
1310 fold_statuses.push(
1311 is_singleton
1312 .then(|| {
1313 snapshot
1314 .fold_for_line(buffer_row)
1315 .map(|fold_status| (fold_status, buffer_row, active))
1316 })
1317 .flatten(),
1318 )
1319 }
1320 } else {
1321 fold_statuses.push(None);
1322 shaped_line_numbers.push(None);
1323 }
1324 }
1325
1326 (shaped_line_numbers, fold_statuses)
1327 }
1328
1329 fn layout_lines(
1330 &self,
1331 rows: Range<u32>,
1332 line_number_layouts: &[Option<ShapedLine>],
1333 snapshot: &EditorSnapshot,
1334 cx: &ElementContext,
1335 ) -> Vec<LineWithInvisibles> {
1336 if rows.start >= rows.end {
1337 return Vec::new();
1338 }
1339
1340 // Show the placeholder when the editor is empty
1341 if snapshot.is_empty() {
1342 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1343 let placeholder_color = cx.theme().colors().text_placeholder;
1344 let placeholder_text = snapshot.placeholder_text();
1345
1346 let placeholder_lines = placeholder_text
1347 .as_ref()
1348 .map_or("", AsRef::as_ref)
1349 .split('\n')
1350 .skip(rows.start as usize)
1351 .chain(iter::repeat(""))
1352 .take(rows.len());
1353 placeholder_lines
1354 .filter_map(move |line| {
1355 let run = TextRun {
1356 len: line.len(),
1357 font: self.style.text.font(),
1358 color: placeholder_color,
1359 background_color: None,
1360 underline: Default::default(),
1361 strikethrough: None,
1362 };
1363 cx.text_system()
1364 .shape_line(line.to_string().into(), font_size, &[run])
1365 .log_err()
1366 })
1367 .map(|line| LineWithInvisibles {
1368 line,
1369 invisibles: Vec::new(),
1370 })
1371 .collect()
1372 } else {
1373 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1374 LineWithInvisibles::from_chunks(
1375 chunks,
1376 &self.style.text,
1377 MAX_LINE_LEN,
1378 rows.len(),
1379 line_number_layouts,
1380 snapshot.mode,
1381 cx,
1382 )
1383 }
1384 }
1385
1386 #[allow(clippy::too_many_arguments)]
1387 fn build_blocks(
1388 &self,
1389 rows: Range<u32>,
1390 snapshot: &EditorSnapshot,
1391 hitbox: &Hitbox,
1392 text_hitbox: &Hitbox,
1393 scroll_width: &mut Pixels,
1394 gutter_dimensions: &GutterDimensions,
1395 em_width: Pixels,
1396 text_x: Pixels,
1397 line_height: Pixels,
1398 line_layouts: &[LineWithInvisibles],
1399 cx: &mut ElementContext,
1400 ) -> Vec<BlockLayout> {
1401 let mut block_id = 0;
1402 let (fixed_blocks, non_fixed_blocks) = snapshot
1403 .blocks_in_range(rows.clone())
1404 .partition::<Vec<_>, _>(|(_, block)| match block {
1405 TransformBlock::ExcerptHeader { .. } => false,
1406 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
1407 });
1408
1409 let render_block = |block: &TransformBlock,
1410 available_space: Size<AvailableSpace>,
1411 block_id: usize,
1412 block_row_start: u32,
1413 cx: &mut ElementContext| {
1414 let mut element = match block {
1415 TransformBlock::Custom(block) => {
1416 let align_to = block
1417 .position()
1418 .to_point(&snapshot.buffer_snapshot)
1419 .to_display_point(snapshot);
1420 let anchor_x = text_x
1421 + if rows.contains(&align_to.row()) {
1422 line_layouts[(align_to.row() - rows.start) as usize]
1423 .line
1424 .x_for_index(align_to.column() as usize)
1425 } else {
1426 layout_line(align_to.row(), snapshot, &self.style, cx)
1427 .unwrap()
1428 .x_for_index(align_to.column() as usize)
1429 };
1430
1431 block.render(&mut BlockContext {
1432 context: cx,
1433 anchor_x,
1434 gutter_dimensions,
1435 line_height,
1436 em_width,
1437 block_id,
1438 max_width: text_hitbox.size.width.max(*scroll_width),
1439 editor_style: &self.style,
1440 })
1441 }
1442
1443 TransformBlock::ExcerptHeader {
1444 buffer,
1445 range,
1446 starts_new_buffer,
1447 height,
1448 ..
1449 } => {
1450 let include_root = self
1451 .editor
1452 .read(cx)
1453 .project
1454 .as_ref()
1455 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
1456 .unwrap_or_default();
1457
1458 #[derive(Clone)]
1459 struct JumpData {
1460 position: Point,
1461 anchor: text::Anchor,
1462 path: ProjectPath,
1463 line_offset_from_top: u32,
1464 }
1465
1466 let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
1467 let jump_path = ProjectPath {
1468 worktree_id: file.worktree_id(cx),
1469 path: file.path.clone(),
1470 };
1471 let jump_anchor = range
1472 .primary
1473 .as_ref()
1474 .map_or(range.context.start, |primary| primary.start);
1475
1476 let excerpt_start = range.context.start;
1477 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
1478 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
1479 0
1480 } else {
1481 let excerpt_start_row =
1482 language::ToPoint::to_point(&jump_anchor, buffer).row;
1483 jump_position.row - excerpt_start_row
1484 };
1485
1486 let line_offset_from_top =
1487 block_row_start + *height as u32 + offset_from_excerpt_start
1488 - snapshot
1489 .scroll_anchor
1490 .scroll_position(&snapshot.display_snapshot)
1491 .y as u32;
1492
1493 JumpData {
1494 position: jump_position,
1495 anchor: jump_anchor,
1496 path: jump_path,
1497 line_offset_from_top,
1498 }
1499 });
1500
1501 let element = if *starts_new_buffer {
1502 let path = buffer.resolve_file_path(cx, include_root);
1503 let mut filename = None;
1504 let mut parent_path = None;
1505 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
1506 if let Some(path) = path {
1507 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
1508 parent_path = path
1509 .parent()
1510 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
1511 }
1512
1513 v_flex()
1514 .id(("path header container", block_id))
1515 .size_full()
1516 .justify_center()
1517 .p(gpui::px(6.))
1518 .child(
1519 h_flex()
1520 .id("path header block")
1521 .size_full()
1522 .pl(gpui::px(12.))
1523 .pr(gpui::px(8.))
1524 .rounded_md()
1525 .shadow_md()
1526 .border()
1527 .border_color(cx.theme().colors().border)
1528 .bg(cx.theme().colors().editor_subheader_background)
1529 .justify_between()
1530 .hover(|style| style.bg(cx.theme().colors().element_hover))
1531 .child(
1532 h_flex().gap_3().child(
1533 h_flex()
1534 .gap_2()
1535 .child(
1536 filename
1537 .map(SharedString::from)
1538 .unwrap_or_else(|| "untitled".into()),
1539 )
1540 .when_some(parent_path, |then, path| {
1541 then.child(
1542 div().child(path).text_color(
1543 cx.theme().colors().text_muted,
1544 ),
1545 )
1546 }),
1547 ),
1548 )
1549 .when_some(jump_data.clone(), |this, jump_data| {
1550 this.cursor_pointer()
1551 .tooltip(|cx| {
1552 Tooltip::for_action(
1553 "Jump to File",
1554 &OpenExcerpts,
1555 cx,
1556 )
1557 })
1558 .on_mouse_down(MouseButton::Left, |_, cx| {
1559 cx.stop_propagation()
1560 })
1561 .on_click(cx.listener_for(&self.editor, {
1562 move |editor, _, cx| {
1563 editor.jump(
1564 jump_data.path.clone(),
1565 jump_data.position,
1566 jump_data.anchor,
1567 jump_data.line_offset_from_top,
1568 cx,
1569 );
1570 }
1571 }))
1572 }),
1573 )
1574 } else {
1575 v_flex()
1576 .id(("collapsed context", block_id))
1577 .size_full()
1578 .child(
1579 div()
1580 .flex()
1581 .v_flex()
1582 .justify_start()
1583 .id("jump to collapsed context")
1584 .w(relative(1.0))
1585 .h_full()
1586 .child(
1587 div()
1588 .h_px()
1589 .w_full()
1590 .bg(cx.theme().colors().border_variant)
1591 .group_hover("excerpt-jump-action", |style| {
1592 style.bg(cx.theme().colors().border)
1593 }),
1594 ),
1595 )
1596 .child(
1597 h_flex()
1598 .justify_end()
1599 .flex_none()
1600 .w(
1601 gutter_dimensions.width - (gutter_dimensions.left_padding), // + gutter_dimensions.right_padding)
1602 )
1603 .h_full()
1604 .child(
1605 ButtonLike::new("jump-icon")
1606 .style(ButtonStyle::Transparent)
1607 .child(
1608 svg()
1609 .path(IconName::ArrowUpRight.path())
1610 .size(IconSize::XSmall.rems())
1611 .text_color(cx.theme().colors().border)
1612 .group_hover("excerpt-jump-action", |style| {
1613 style.text_color(
1614 cx.theme().colors().editor_line_number,
1615 )
1616 }),
1617 )
1618 .when_some(jump_data.clone(), |this, jump_data| {
1619 this.on_click(cx.listener_for(&self.editor, {
1620 let path = jump_data.path.clone();
1621 move |editor, _, cx| {
1622 editor.jump(
1623 path.clone(),
1624 jump_data.position,
1625 jump_data.anchor,
1626 jump_data.line_offset_from_top,
1627 cx,
1628 );
1629 }
1630 }))
1631 .tooltip({
1632 move |cx| {
1633 Tooltip::for_action(
1634 format!(
1635 "Jump to {}:L{}",
1636 jump_data.path.path.display(),
1637 jump_data.position.row + 1
1638 ),
1639 &OpenExcerpts,
1640 cx,
1641 )
1642 }
1643 })
1644 }),
1645 ),
1646 )
1647 .group("excerpt-jump-action")
1648 .cursor_pointer()
1649 .when_some(jump_data.clone(), |this, jump_data| {
1650 this.on_click(cx.listener_for(&self.editor, {
1651 let path = jump_data.path.clone();
1652 move |editor, _, cx| {
1653 cx.stop_propagation();
1654
1655 editor.jump(
1656 path.clone(),
1657 jump_data.position,
1658 jump_data.anchor,
1659 jump_data.line_offset_from_top,
1660 cx,
1661 );
1662 }
1663 }))
1664 .tooltip(move |cx| {
1665 Tooltip::for_action(
1666 format!(
1667 "Jump to {}:L{}",
1668 jump_data.path.path.display(),
1669 jump_data.position.row + 1
1670 ),
1671 &OpenExcerpts,
1672 cx,
1673 )
1674 })
1675 })
1676 };
1677 element.into_any()
1678 }
1679 };
1680
1681 let size = element.measure(available_space, cx);
1682 (element, size)
1683 };
1684
1685 let mut fixed_block_max_width = Pixels::ZERO;
1686 let mut blocks = Vec::new();
1687 for (row, block) in fixed_blocks {
1688 let available_space = size(
1689 AvailableSpace::MinContent,
1690 AvailableSpace::Definite(block.height() as f32 * line_height),
1691 );
1692 let (element, element_size) = render_block(block, available_space, block_id, row, cx);
1693 block_id += 1;
1694 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
1695 blocks.push(BlockLayout {
1696 row,
1697 element,
1698 available_space,
1699 style: BlockStyle::Fixed,
1700 });
1701 }
1702 for (row, block) in non_fixed_blocks {
1703 let style = match block {
1704 TransformBlock::Custom(block) => block.style(),
1705 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
1706 };
1707 let width = match style {
1708 BlockStyle::Sticky => hitbox.size.width,
1709 BlockStyle::Flex => hitbox
1710 .size
1711 .width
1712 .max(fixed_block_max_width)
1713 .max(gutter_dimensions.width + *scroll_width),
1714 BlockStyle::Fixed => unreachable!(),
1715 };
1716 let available_space = size(
1717 AvailableSpace::Definite(width),
1718 AvailableSpace::Definite(block.height() as f32 * line_height),
1719 );
1720 let (element, _) = render_block(block, available_space, block_id, row, cx);
1721 block_id += 1;
1722 blocks.push(BlockLayout {
1723 row,
1724 element,
1725 available_space,
1726 style,
1727 });
1728 }
1729
1730 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
1731 blocks
1732 }
1733
1734 fn layout_blocks(
1735 &self,
1736 blocks: &mut Vec<BlockLayout>,
1737 hitbox: &Hitbox,
1738 line_height: Pixels,
1739 scroll_pixel_position: gpui::Point<Pixels>,
1740 cx: &mut ElementContext,
1741 ) {
1742 for block in blocks {
1743 let mut origin = hitbox.origin
1744 + point(
1745 Pixels::ZERO,
1746 block.row as f32 * line_height - scroll_pixel_position.y,
1747 );
1748 if !matches!(block.style, BlockStyle::Sticky) {
1749 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
1750 }
1751 block.element.layout(origin, block.available_space, cx);
1752 }
1753 }
1754
1755 #[allow(clippy::too_many_arguments)]
1756 fn layout_context_menu(
1757 &self,
1758 line_height: Pixels,
1759 hitbox: &Hitbox,
1760 text_hitbox: &Hitbox,
1761 content_origin: gpui::Point<Pixels>,
1762 start_row: u32,
1763 scroll_pixel_position: gpui::Point<Pixels>,
1764 line_layouts: &[LineWithInvisibles],
1765 newest_selection_head: DisplayPoint,
1766 cx: &mut ElementContext,
1767 ) -> bool {
1768 let max_height = cmp::min(
1769 12. * line_height,
1770 cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
1771 );
1772 let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
1773 if editor.context_menu_visible() {
1774 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
1775 } else {
1776 None
1777 }
1778 }) else {
1779 return false;
1780 };
1781
1782 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1783 let context_menu_size = context_menu.measure(available_space, cx);
1784
1785 let cursor_row_layout = &line_layouts[(position.row() - start_row) as usize].line;
1786 let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1787 let y = (position.row() + 1) as f32 * line_height - scroll_pixel_position.y;
1788 let mut list_origin = content_origin + point(x, y);
1789 let list_width = context_menu_size.width;
1790 let list_height = context_menu_size.height;
1791
1792 // Snap the right edge of the list to the right edge of the window if
1793 // its horizontal bounds overflow.
1794 if list_origin.x + list_width > cx.viewport_size().width {
1795 list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1796 }
1797
1798 if list_origin.y + list_height > text_hitbox.lower_right().y {
1799 list_origin.y -= line_height + list_height;
1800 }
1801
1802 cx.defer_draw(context_menu, list_origin, 1);
1803 true
1804 }
1805
1806 fn layout_mouse_context_menu(&self, cx: &mut ElementContext) -> Option<AnyElement> {
1807 let mouse_context_menu = self.editor.read(cx).mouse_context_menu.as_ref()?;
1808 let mut element = deferred(
1809 anchored()
1810 .position(mouse_context_menu.position)
1811 .child(mouse_context_menu.context_menu.clone())
1812 .anchor(AnchorCorner::TopLeft)
1813 .snap_to_window(),
1814 )
1815 .with_priority(1)
1816 .into_any();
1817
1818 element.layout(gpui::Point::default(), AvailableSpace::min_size(), cx);
1819 Some(element)
1820 }
1821
1822 #[allow(clippy::too_many_arguments)]
1823 fn layout_hover_popovers(
1824 &self,
1825 snapshot: &EditorSnapshot,
1826 hitbox: &Hitbox,
1827 text_hitbox: &Hitbox,
1828 visible_display_row_range: Range<u32>,
1829 content_origin: gpui::Point<Pixels>,
1830 scroll_pixel_position: gpui::Point<Pixels>,
1831 line_layouts: &[LineWithInvisibles],
1832 line_height: Pixels,
1833 em_width: Pixels,
1834 cx: &mut ElementContext,
1835 ) {
1836 struct MeasuredHoverPopover {
1837 element: AnyElement,
1838 size: Size<Pixels>,
1839 horizontal_offset: Pixels,
1840 }
1841
1842 let max_size = size(
1843 (120. * em_width) // Default size
1844 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
1845 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
1846 (16. * line_height) // Default size
1847 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
1848 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
1849 );
1850
1851 let hover_popovers = self.editor.update(cx, |editor, cx| {
1852 editor.hover_state.render(
1853 &snapshot,
1854 &self.style,
1855 visible_display_row_range.clone(),
1856 max_size,
1857 editor.workspace.as_ref().map(|(w, _)| w.clone()),
1858 cx,
1859 )
1860 });
1861 let Some((position, hover_popovers)) = hover_popovers else {
1862 return;
1863 };
1864
1865 let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1866
1867 // This is safe because we check on layout whether the required row is available
1868 let hovered_row_layout =
1869 &line_layouts[(position.row() - visible_display_row_range.start) as usize].line;
1870
1871 // Compute Hovered Point
1872 let x =
1873 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
1874 let y = position.row() as f32 * line_height - scroll_pixel_position.y;
1875 let hovered_point = content_origin + point(x, y);
1876
1877 let mut overall_height = Pixels::ZERO;
1878 let mut measured_hover_popovers = Vec::new();
1879 for mut hover_popover in hover_popovers {
1880 let size = hover_popover.measure(available_space, cx);
1881 let horizontal_offset =
1882 (text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
1883
1884 overall_height += HOVER_POPOVER_GAP + size.height;
1885
1886 measured_hover_popovers.push(MeasuredHoverPopover {
1887 element: hover_popover,
1888 size,
1889 horizontal_offset,
1890 });
1891 }
1892 overall_height += HOVER_POPOVER_GAP;
1893
1894 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
1895 let mut occlusion = div()
1896 .size_full()
1897 .occlude()
1898 .on_mouse_move(|_, cx| cx.stop_propagation())
1899 .into_any_element();
1900 occlusion.measure(size(width, HOVER_POPOVER_GAP).into(), cx);
1901 cx.defer_draw(occlusion, origin, 2);
1902 }
1903
1904 if hovered_point.y > overall_height {
1905 // There is enough space above. Render popovers above the hovered point
1906 let mut current_y = hovered_point.y;
1907 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
1908 let size = popover.size;
1909 let popover_origin = point(
1910 hovered_point.x + popover.horizontal_offset,
1911 current_y - size.height,
1912 );
1913
1914 cx.defer_draw(popover.element, popover_origin, 2);
1915 if position != itertools::Position::Last {
1916 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
1917 draw_occluder(size.width, origin, cx);
1918 }
1919
1920 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1921 }
1922 } else {
1923 // There is not enough space above. Render popovers below the hovered point
1924 let mut current_y = hovered_point.y + line_height;
1925 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
1926 let size = popover.size;
1927 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
1928
1929 cx.defer_draw(popover.element, popover_origin, 2);
1930 if position != itertools::Position::Last {
1931 let origin = point(popover_origin.x, popover_origin.y + size.height);
1932 draw_occluder(size.width, origin, cx);
1933 }
1934
1935 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1936 }
1937 }
1938 }
1939
1940 fn paint_background(&self, layout: &EditorLayout, cx: &mut ElementContext) {
1941 cx.paint_layer(layout.hitbox.bounds, |cx| {
1942 let scroll_top = layout.position_map.snapshot.scroll_position().y;
1943 let gutter_bg = cx.theme().colors().editor_gutter_background;
1944 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
1945 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
1946
1947 if let EditorMode::Full = layout.mode {
1948 let mut active_rows = layout.active_rows.iter().peekable();
1949 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
1950 let mut end_row = *start_row;
1951 while active_rows.peek().map_or(false, |r| {
1952 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
1953 }) {
1954 active_rows.next().unwrap();
1955 end_row += 1;
1956 }
1957
1958 if !contains_non_empty_selection {
1959 let origin = point(
1960 layout.hitbox.origin.x,
1961 layout.hitbox.origin.y
1962 + (*start_row as f32 - scroll_top)
1963 * layout.position_map.line_height,
1964 );
1965 let size = size(
1966 layout.hitbox.size.width,
1967 layout.position_map.line_height * (end_row - start_row + 1) as f32,
1968 );
1969 let active_line_bg = cx.theme().colors().editor_active_line_background;
1970 cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
1971 }
1972 }
1973
1974 let mut paint_highlight =
1975 |highlight_row_start: u32, highlight_row_end: u32, color| {
1976 let origin = point(
1977 layout.hitbox.origin.x,
1978 layout.hitbox.origin.y
1979 + (highlight_row_start as f32 - scroll_top)
1980 * layout.position_map.line_height,
1981 );
1982 let size = size(
1983 layout.hitbox.size.width,
1984 layout.position_map.line_height
1985 * (highlight_row_end + 1 - highlight_row_start) as f32,
1986 );
1987 cx.paint_quad(fill(Bounds { origin, size }, color));
1988 };
1989
1990 let mut last_row = None;
1991 let mut highlight_row_start = 0u32;
1992 let mut highlight_row_end = 0u32;
1993 for (&row, &color) in &layout.highlighted_rows {
1994 let paint = last_row.map_or(false, |(last_row, last_color)| {
1995 last_color != color || last_row + 1 < row
1996 });
1997
1998 if paint {
1999 let paint_range_is_unfinished = highlight_row_end == 0;
2000 if paint_range_is_unfinished {
2001 highlight_row_end = row;
2002 last_row = None;
2003 }
2004 paint_highlight(highlight_row_start, highlight_row_end, color);
2005 highlight_row_start = 0;
2006 highlight_row_end = 0;
2007 if !paint_range_is_unfinished {
2008 highlight_row_start = row;
2009 last_row = Some((row, color));
2010 }
2011 } else {
2012 if last_row.is_none() {
2013 highlight_row_start = row;
2014 } else {
2015 highlight_row_end = row;
2016 }
2017 last_row = Some((row, color));
2018 }
2019 }
2020 if let Some((row, hsla)) = last_row {
2021 highlight_row_end = row;
2022 paint_highlight(highlight_row_start, highlight_row_end, hsla);
2023 }
2024
2025 let scroll_left =
2026 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
2027
2028 for (wrap_position, active) in layout.wrap_guides.iter() {
2029 let x = (layout.text_hitbox.origin.x
2030 + *wrap_position
2031 + layout.position_map.em_width / 2.)
2032 - scroll_left;
2033
2034 let show_scrollbars = layout
2035 .scrollbar_layout
2036 .as_ref()
2037 .map_or(false, |scrollbar| scrollbar.visible);
2038 if x < layout.text_hitbox.origin.x
2039 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
2040 {
2041 continue;
2042 }
2043
2044 let color = if *active {
2045 cx.theme().colors().editor_active_wrap_guide
2046 } else {
2047 cx.theme().colors().editor_wrap_guide
2048 };
2049 cx.paint_quad(fill(
2050 Bounds {
2051 origin: point(x, layout.text_hitbox.origin.y),
2052 size: size(px(1.), layout.text_hitbox.size.height),
2053 },
2054 color,
2055 ));
2056 }
2057 }
2058 })
2059 }
2060
2061 fn paint_gutter(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2062 let line_height = layout.position_map.line_height;
2063
2064 let scroll_position = layout.position_map.snapshot.scroll_position();
2065 let scroll_top = scroll_position.y * line_height;
2066
2067 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
2068
2069 let show_git_gutter = matches!(
2070 ProjectSettings::get_global(cx).git.git_gutter,
2071 Some(GitGutterSetting::TrackedFiles)
2072 );
2073
2074 if show_git_gutter {
2075 Self::paint_diff_hunks(layout, cx);
2076 }
2077
2078 if layout.blamed_display_rows.is_some() {
2079 self.paint_blamed_display_rows(layout, cx);
2080 }
2081
2082 for (ix, line) in layout.line_numbers.iter().enumerate() {
2083 if let Some(line) = line {
2084 let line_origin = layout.gutter_hitbox.origin
2085 + point(
2086 layout.gutter_hitbox.size.width
2087 - line.width
2088 - layout.gutter_dimensions.right_padding,
2089 ix as f32 * line_height - (scroll_top % line_height),
2090 );
2091
2092 line.paint(line_origin, line_height, cx).log_err();
2093 }
2094 }
2095
2096 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2097 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2098 for fold_indicator in layout.fold_indicators.iter_mut().flatten() {
2099 fold_indicator.paint(cx);
2100 }
2101 });
2102
2103 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
2104 indicator.paint(cx);
2105 }
2106 })
2107 }
2108
2109 fn paint_diff_hunks(layout: &EditorLayout, cx: &mut ElementContext) {
2110 if layout.display_hunks.is_empty() {
2111 return;
2112 }
2113
2114 let line_height = layout.position_map.line_height;
2115
2116 let scroll_position = layout.position_map.snapshot.scroll_position();
2117 let scroll_top = scroll_position.y * line_height;
2118
2119 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2120 for hunk in &layout.display_hunks {
2121 let (display_row_range, status) = match hunk {
2122 //TODO: This rendering is entirely a horrible hack
2123 &DisplayDiffHunk::Folded { display_row: row } => {
2124 let start_y = row as f32 * line_height - scroll_top;
2125 let end_y = start_y + line_height;
2126
2127 let width = 0.275 * line_height;
2128 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2129 let highlight_size = size(width * 2., end_y - start_y);
2130 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2131 cx.paint_quad(quad(
2132 highlight_bounds,
2133 Corners::all(1. * line_height),
2134 cx.theme().status().modified,
2135 Edges::default(),
2136 transparent_black(),
2137 ));
2138
2139 continue;
2140 }
2141
2142 DisplayDiffHunk::Unfolded {
2143 display_row_range,
2144 status,
2145 } => (display_row_range, status),
2146 };
2147
2148 let color = match status {
2149 DiffHunkStatus::Added => cx.theme().status().created,
2150 DiffHunkStatus::Modified => cx.theme().status().modified,
2151
2152 //TODO: This rendering is entirely a horrible hack
2153 DiffHunkStatus::Removed => {
2154 let row = display_row_range.start;
2155
2156 let offset = line_height / 2.;
2157 let start_y = row as f32 * line_height - offset - scroll_top;
2158 let end_y = start_y + line_height;
2159
2160 let width = 0.275 * line_height;
2161 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2162 let highlight_size = size(width * 2., end_y - start_y);
2163 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2164 cx.paint_quad(quad(
2165 highlight_bounds,
2166 Corners::all(1. * line_height),
2167 cx.theme().status().deleted,
2168 Edges::default(),
2169 transparent_black(),
2170 ));
2171
2172 continue;
2173 }
2174 };
2175
2176 let start_row = display_row_range.start;
2177 let end_row = display_row_range.end;
2178 // If we're in a multibuffer, row range span might include an
2179 // excerpt header, so if we were to draw the marker straight away,
2180 // the hunk might include the rows of that header.
2181 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
2182 // Instead, we simply check whether the range we're dealing with includes
2183 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
2184 let end_row_in_current_excerpt = layout
2185 .position_map
2186 .snapshot
2187 .blocks_in_range(start_row..end_row)
2188 .find_map(|(start_row, block)| {
2189 if matches!(block, TransformBlock::ExcerptHeader { .. }) {
2190 Some(start_row)
2191 } else {
2192 None
2193 }
2194 })
2195 .unwrap_or(end_row);
2196
2197 let start_y = start_row as f32 * line_height - scroll_top;
2198 let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
2199
2200 let width = 0.275 * line_height;
2201 let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
2202 let highlight_size = size(width * 2., end_y - start_y);
2203 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
2204 cx.paint_quad(quad(
2205 highlight_bounds,
2206 Corners::all(0.05 * line_height),
2207 color,
2208 Edges::default(),
2209 transparent_black(),
2210 ));
2211 }
2212 })
2213 }
2214
2215 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2216 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
2217 return;
2218 };
2219
2220 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
2221 for mut blame_element in blamed_display_rows.into_iter() {
2222 blame_element.paint(cx);
2223 }
2224 })
2225 }
2226
2227 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2228 cx.with_content_mask(
2229 Some(ContentMask {
2230 bounds: layout.text_hitbox.bounds,
2231 }),
2232 |cx| {
2233 let cursor_style = if self
2234 .editor
2235 .read(cx)
2236 .hovered_link_state
2237 .as_ref()
2238 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
2239 {
2240 CursorStyle::PointingHand
2241 } else {
2242 CursorStyle::IBeam
2243 };
2244 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
2245
2246 cx.with_element_id(Some("folds"), |cx| self.paint_folds(layout, cx));
2247 let invisible_display_ranges = self.paint_highlights(layout, cx);
2248 self.paint_lines(&invisible_display_ranges, layout, cx);
2249 self.paint_redactions(layout, cx);
2250 self.paint_cursors(layout, cx);
2251 },
2252 )
2253 }
2254
2255 fn paint_highlights(
2256 &mut self,
2257 layout: &mut EditorLayout,
2258 cx: &mut ElementContext,
2259 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
2260 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2261 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
2262 let line_end_overshoot = 0.15 * layout.position_map.line_height;
2263 for (range, color) in &layout.highlighted_ranges {
2264 self.paint_highlighted_range(
2265 range.clone(),
2266 *color,
2267 Pixels::ZERO,
2268 line_end_overshoot,
2269 layout,
2270 cx,
2271 );
2272 }
2273
2274 let corner_radius = 0.15 * layout.position_map.line_height;
2275
2276 for (player_color, selections) in &layout.selections {
2277 for selection in selections.into_iter() {
2278 self.paint_highlighted_range(
2279 selection.range.clone(),
2280 player_color.selection,
2281 corner_radius,
2282 corner_radius * 2.,
2283 layout,
2284 cx,
2285 );
2286
2287 if selection.is_local && !selection.range.is_empty() {
2288 invisible_display_ranges.push(selection.range.clone());
2289 }
2290 }
2291 }
2292 invisible_display_ranges
2293 })
2294 }
2295
2296 fn paint_lines(
2297 &mut self,
2298 invisible_display_ranges: &[Range<DisplayPoint>],
2299 layout: &EditorLayout,
2300 cx: &mut ElementContext,
2301 ) {
2302 let whitespace_setting = self
2303 .editor
2304 .read(cx)
2305 .buffer
2306 .read(cx)
2307 .settings_at(0, cx)
2308 .show_whitespaces;
2309
2310 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
2311 let row = layout.visible_display_row_range.start + ix as u32;
2312 line_with_invisibles.draw(
2313 layout,
2314 row,
2315 layout.content_origin,
2316 whitespace_setting,
2317 invisible_display_ranges,
2318 cx,
2319 )
2320 }
2321 }
2322
2323 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2324 if layout.redacted_ranges.is_empty() {
2325 return;
2326 }
2327
2328 let line_end_overshoot = layout.line_end_overshoot();
2329
2330 // A softer than perfect black
2331 let redaction_color = gpui::rgb(0x0e1111);
2332
2333 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2334 for range in layout.redacted_ranges.iter() {
2335 self.paint_highlighted_range(
2336 range.clone(),
2337 redaction_color.into(),
2338 Pixels::ZERO,
2339 line_end_overshoot,
2340 layout,
2341 cx,
2342 );
2343 }
2344 });
2345 }
2346
2347 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2348 for cursor in &mut layout.cursors {
2349 cursor.paint(layout.content_origin, cx);
2350 }
2351 }
2352
2353 fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2354 let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
2355 return;
2356 };
2357
2358 let thumb_bounds = scrollbar_layout.thumb_bounds();
2359 if scrollbar_layout.visible {
2360 cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
2361 cx.paint_quad(quad(
2362 scrollbar_layout.hitbox.bounds,
2363 Corners::default(),
2364 cx.theme().colors().scrollbar_track_background,
2365 Edges {
2366 top: Pixels::ZERO,
2367 right: Pixels::ZERO,
2368 bottom: Pixels::ZERO,
2369 left: ScrollbarLayout::BORDER_WIDTH,
2370 },
2371 cx.theme().colors().scrollbar_track_border,
2372 ));
2373 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2374 let is_singleton = self.editor.read(cx).is_singleton(cx);
2375 let left = scrollbar_layout.hitbox.left();
2376 let right = scrollbar_layout.hitbox.right();
2377 let column_width =
2378 px(((right - left - ScrollbarLayout::BORDER_WIDTH).0 / 3.0).floor());
2379 if is_singleton && scrollbar_settings.selections {
2380 let start_anchor = Anchor::min();
2381 let end_anchor = Anchor::max();
2382 let background_ranges = self
2383 .editor
2384 .read(cx)
2385 .background_highlight_row_ranges::<BufferSearchHighlights>(
2386 start_anchor..end_anchor,
2387 &layout.position_map.snapshot,
2388 50000,
2389 );
2390 let left_x = left + ScrollbarLayout::BORDER_WIDTH + column_width;
2391 let right_x = left_x + column_width;
2392 for range in background_ranges {
2393 let (start_y, end_y) =
2394 scrollbar_layout.ys_for_marker(range.start().row(), range.end().row());
2395 let bounds =
2396 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2397 cx.paint_quad(quad(
2398 bounds,
2399 Corners::default(),
2400 cx.theme().status().info,
2401 Edges::default(),
2402 cx.theme().colors().scrollbar_thumb_border,
2403 ));
2404 }
2405 }
2406
2407 if is_singleton && scrollbar_settings.symbols_selections {
2408 let selection_ranges = self.editor.read(cx).background_highlights_in_range(
2409 Anchor::min()..Anchor::max(),
2410 &layout.position_map.snapshot,
2411 cx.theme().colors(),
2412 );
2413 let left_x = left + ScrollbarLayout::BORDER_WIDTH + column_width;
2414 let right_x = left_x + column_width;
2415 for hunk in selection_ranges {
2416 let start_display = Point::new(hunk.0.start.row(), 0)
2417 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2418 let end_display = Point::new(hunk.0.end.row(), 0)
2419 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2420 let (start_y, end_y) =
2421 scrollbar_layout.ys_for_marker(start_display.row(), end_display.row());
2422 let bounds =
2423 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2424 cx.paint_quad(quad(
2425 bounds,
2426 Corners::default(),
2427 cx.theme().status().info,
2428 Edges::default(),
2429 cx.theme().colors().scrollbar_thumb_border,
2430 ));
2431 }
2432 }
2433
2434 if is_singleton && scrollbar_settings.git_diff {
2435 let left_x = left + ScrollbarLayout::BORDER_WIDTH;
2436 let right_x = left_x + column_width;
2437 for hunk in layout
2438 .position_map
2439 .snapshot
2440 .buffer_snapshot
2441 .git_diff_hunks_in_range(0..layout.max_row)
2442 {
2443 let start_display_row = Point::new(hunk.associated_range.start, 0)
2444 .to_display_point(&layout.position_map.snapshot.display_snapshot)
2445 .row();
2446 let mut end_display_row = Point::new(hunk.associated_range.end, 0)
2447 .to_display_point(&layout.position_map.snapshot.display_snapshot)
2448 .row();
2449 if end_display_row != start_display_row {
2450 end_display_row -= 1;
2451 }
2452 let (start_y, end_y) =
2453 scrollbar_layout.ys_for_marker(start_display_row, end_display_row);
2454 let bounds =
2455 Bounds::from_corners(point(left_x, start_y), point(right_x, end_y));
2456 let color = match hunk.status() {
2457 DiffHunkStatus::Added => cx.theme().status().created,
2458 DiffHunkStatus::Modified => cx.theme().status().modified,
2459 DiffHunkStatus::Removed => cx.theme().status().deleted,
2460 };
2461 cx.paint_quad(quad(
2462 bounds,
2463 Corners::default(),
2464 color,
2465 Edges::default(),
2466 cx.theme().colors().scrollbar_thumb_border,
2467 ));
2468 }
2469 }
2470
2471 if is_singleton && scrollbar_settings.diagnostics {
2472 let max_point = layout
2473 .position_map
2474 .snapshot
2475 .display_snapshot
2476 .buffer_snapshot
2477 .max_point();
2478
2479 let diagnostics = layout
2480 .position_map
2481 .snapshot
2482 .buffer_snapshot
2483 .diagnostics_in_range::<_, Point>(Point::zero()..max_point, false)
2484 // We want to sort by severity, in order to paint the most severe diagnostics last.
2485 .sorted_by_key(|diagnostic| {
2486 std::cmp::Reverse(diagnostic.diagnostic.severity)
2487 });
2488
2489 let left_x = left + ScrollbarLayout::BORDER_WIDTH + 2.0 * column_width;
2490 for diagnostic in diagnostics {
2491 let start_display = diagnostic
2492 .range
2493 .start
2494 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2495 let end_display = diagnostic
2496 .range
2497 .end
2498 .to_display_point(&layout.position_map.snapshot.display_snapshot);
2499 let (start_y, end_y) =
2500 scrollbar_layout.ys_for_marker(start_display.row(), end_display.row());
2501 let bounds =
2502 Bounds::from_corners(point(left_x, start_y), point(right, end_y));
2503 let color = match diagnostic.diagnostic.severity {
2504 DiagnosticSeverity::ERROR => cx.theme().status().error,
2505 DiagnosticSeverity::WARNING => cx.theme().status().warning,
2506 DiagnosticSeverity::INFORMATION => cx.theme().status().info,
2507 _ => cx.theme().status().hint,
2508 };
2509 cx.paint_quad(quad(
2510 bounds,
2511 Corners::default(),
2512 color,
2513 Edges::default(),
2514 cx.theme().colors().scrollbar_thumb_border,
2515 ));
2516 }
2517 }
2518
2519 cx.paint_quad(quad(
2520 thumb_bounds,
2521 Corners::default(),
2522 cx.theme().colors().scrollbar_thumb_background,
2523 Edges {
2524 top: Pixels::ZERO,
2525 right: Pixels::ZERO,
2526 bottom: Pixels::ZERO,
2527 left: ScrollbarLayout::BORDER_WIDTH,
2528 },
2529 cx.theme().colors().scrollbar_thumb_border,
2530 ));
2531 });
2532 }
2533
2534 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
2535
2536 let scroll_height = scrollbar_layout.scroll_height;
2537 let height = scrollbar_layout.height;
2538 let row_range = scrollbar_layout.visible_row_range.clone();
2539
2540 cx.on_mouse_event({
2541 let editor = self.editor.clone();
2542 let hitbox = scrollbar_layout.hitbox.clone();
2543 let mut mouse_position = cx.mouse_position();
2544 move |event: &MouseMoveEvent, phase, cx| {
2545 if phase == DispatchPhase::Capture {
2546 return;
2547 }
2548
2549 editor.update(cx, |editor, cx| {
2550 if event.pressed_button == Some(MouseButton::Left)
2551 && editor.scroll_manager.is_dragging_scrollbar()
2552 {
2553 let y = mouse_position.y;
2554 let new_y = event.position.y;
2555 if (hitbox.top()..hitbox.bottom()).contains(&y) {
2556 let mut position = editor.scroll_position(cx);
2557 position.y += (new_y - y) * scroll_height / height;
2558 if position.y < 0.0 {
2559 position.y = 0.0;
2560 }
2561 editor.set_scroll_position(position, cx);
2562 }
2563
2564 mouse_position = event.position;
2565 cx.stop_propagation();
2566 } else {
2567 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2568 if hitbox.is_hovered(cx) {
2569 editor.scroll_manager.show_scrollbar(cx);
2570 }
2571 }
2572 })
2573 }
2574 });
2575
2576 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
2577 cx.on_mouse_event({
2578 let editor = self.editor.clone();
2579 move |_: &MouseUpEvent, phase, cx| {
2580 if phase == DispatchPhase::Capture {
2581 return;
2582 }
2583
2584 editor.update(cx, |editor, cx| {
2585 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2586 cx.stop_propagation();
2587 });
2588 }
2589 });
2590 } else {
2591 cx.on_mouse_event({
2592 let editor = self.editor.clone();
2593 let hitbox = scrollbar_layout.hitbox.clone();
2594 move |event: &MouseDownEvent, phase, cx| {
2595 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
2596 return;
2597 }
2598
2599 editor.update(cx, |editor, cx| {
2600 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
2601
2602 let y = event.position.y;
2603 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
2604 let center_row =
2605 ((y - hitbox.top()) * scroll_height / height).round() as u32;
2606 let top_row = center_row
2607 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
2608 let mut position = editor.scroll_position(cx);
2609 position.y = top_row as f32;
2610 editor.set_scroll_position(position, cx);
2611 } else {
2612 editor.scroll_manager.show_scrollbar(cx);
2613 }
2614
2615 cx.stop_propagation();
2616 });
2617 }
2618 });
2619 }
2620 }
2621
2622 #[allow(clippy::too_many_arguments)]
2623 fn paint_highlighted_range(
2624 &self,
2625 range: Range<DisplayPoint>,
2626 color: Hsla,
2627 corner_radius: Pixels,
2628 line_end_overshoot: Pixels,
2629 layout: &EditorLayout,
2630 cx: &mut ElementContext,
2631 ) {
2632 let start_row = layout.visible_display_row_range.start;
2633 let end_row = layout.visible_display_row_range.end;
2634 if range.start != range.end {
2635 let row_range = if range.end.column() == 0 {
2636 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
2637 } else {
2638 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
2639 };
2640
2641 let highlighted_range = HighlightedRange {
2642 color,
2643 line_height: layout.position_map.line_height,
2644 corner_radius,
2645 start_y: layout.content_origin.y
2646 + row_range.start as f32 * layout.position_map.line_height
2647 - layout.position_map.scroll_pixel_position.y,
2648 lines: row_range
2649 .into_iter()
2650 .map(|row| {
2651 let line_layout =
2652 &layout.position_map.line_layouts[(row - start_row) as usize].line;
2653 HighlightedRangeLine {
2654 start_x: if row == range.start.row() {
2655 layout.content_origin.x
2656 + line_layout.x_for_index(range.start.column() as usize)
2657 - layout.position_map.scroll_pixel_position.x
2658 } else {
2659 layout.content_origin.x
2660 - layout.position_map.scroll_pixel_position.x
2661 },
2662 end_x: if row == range.end.row() {
2663 layout.content_origin.x
2664 + line_layout.x_for_index(range.end.column() as usize)
2665 - layout.position_map.scroll_pixel_position.x
2666 } else {
2667 layout.content_origin.x + line_layout.width + line_end_overshoot
2668 - layout.position_map.scroll_pixel_position.x
2669 },
2670 }
2671 })
2672 .collect(),
2673 };
2674
2675 highlighted_range.paint(layout.text_hitbox.bounds, cx);
2676 }
2677 }
2678
2679 fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2680 if layout.folds.is_empty() {
2681 return;
2682 }
2683
2684 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2685 let fold_corner_radius = 0.15 * layout.position_map.line_height;
2686 for mut fold in mem::take(&mut layout.folds) {
2687 fold.hover_element.paint(cx);
2688
2689 let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
2690 let fold_background = if hover_element.interactivity().active.unwrap() {
2691 cx.theme().colors().ghost_element_active
2692 } else if hover_element.interactivity().hovered.unwrap() {
2693 cx.theme().colors().ghost_element_hover
2694 } else {
2695 cx.theme().colors().ghost_element_background
2696 };
2697
2698 self.paint_highlighted_range(
2699 fold.display_range.clone(),
2700 fold_background,
2701 fold_corner_radius,
2702 fold_corner_radius * 2.,
2703 layout,
2704 cx,
2705 );
2706 }
2707 })
2708 }
2709
2710 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2711 for mut block in layout.blocks.drain(..) {
2712 block.element.paint(cx);
2713 }
2714 }
2715
2716 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2717 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
2718 mouse_context_menu.paint(cx);
2719 }
2720 }
2721
2722 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2723 cx.on_mouse_event({
2724 let position_map = layout.position_map.clone();
2725 let editor = self.editor.clone();
2726 let hitbox = layout.hitbox.clone();
2727 let mut delta = ScrollDelta::default();
2728
2729 move |event: &ScrollWheelEvent, phase, cx| {
2730 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
2731 delta = delta.coalesce(event.delta);
2732 editor.update(cx, |editor, cx| {
2733 let position_map: &PositionMap = &position_map;
2734
2735 let line_height = position_map.line_height;
2736 let max_glyph_width = position_map.em_width;
2737 let (delta, axis) = match delta {
2738 gpui::ScrollDelta::Pixels(mut pixels) => {
2739 //Trackpad
2740 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2741 (pixels, axis)
2742 }
2743
2744 gpui::ScrollDelta::Lines(lines) => {
2745 //Not trackpad
2746 let pixels =
2747 point(lines.x * max_glyph_width, lines.y * line_height);
2748 (pixels, None)
2749 }
2750 };
2751
2752 let scroll_position = position_map.snapshot.scroll_position();
2753 let x = (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width;
2754 let y = (scroll_position.y * line_height - delta.y) / line_height;
2755 let scroll_position =
2756 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2757 editor.scroll(scroll_position, axis, cx);
2758 cx.stop_propagation();
2759 });
2760 }
2761 }
2762 });
2763 }
2764
2765 fn paint_mouse_listeners(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2766 self.paint_scroll_wheel_listener(layout, cx);
2767
2768 cx.on_mouse_event({
2769 let position_map = layout.position_map.clone();
2770 let editor = self.editor.clone();
2771 let text_hitbox = layout.text_hitbox.clone();
2772 let gutter_hitbox = layout.gutter_hitbox.clone();
2773
2774 move |event: &MouseDownEvent, phase, cx| {
2775 if phase == DispatchPhase::Bubble {
2776 match event.button {
2777 MouseButton::Left => editor.update(cx, |editor, cx| {
2778 Self::mouse_left_down(
2779 editor,
2780 event,
2781 &position_map,
2782 &text_hitbox,
2783 &gutter_hitbox,
2784 cx,
2785 );
2786 }),
2787 MouseButton::Right => editor.update(cx, |editor, cx| {
2788 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
2789 }),
2790 _ => {}
2791 };
2792 }
2793 }
2794 });
2795
2796 cx.on_mouse_event({
2797 let editor = self.editor.clone();
2798 let position_map = layout.position_map.clone();
2799 let text_hitbox = layout.text_hitbox.clone();
2800
2801 move |event: &MouseUpEvent, phase, cx| {
2802 if phase == DispatchPhase::Bubble {
2803 editor.update(cx, |editor, cx| {
2804 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
2805 });
2806 }
2807 }
2808 });
2809 cx.on_mouse_event({
2810 let position_map = layout.position_map.clone();
2811 let editor = self.editor.clone();
2812 let text_hitbox = layout.text_hitbox.clone();
2813 let gutter_hitbox = layout.gutter_hitbox.clone();
2814
2815 move |event: &MouseMoveEvent, phase, cx| {
2816 if phase == DispatchPhase::Bubble {
2817 editor.update(cx, |editor, cx| {
2818 if event.pressed_button == Some(MouseButton::Left) {
2819 Self::mouse_dragged(
2820 editor,
2821 event,
2822 &position_map,
2823 text_hitbox.bounds,
2824 cx,
2825 )
2826 }
2827
2828 Self::mouse_moved(
2829 editor,
2830 event,
2831 &position_map,
2832 &text_hitbox,
2833 &gutter_hitbox,
2834 cx,
2835 )
2836 });
2837 }
2838 }
2839 });
2840 }
2841
2842 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
2843 bounds.upper_right().x - self.style.scrollbar_width
2844 }
2845
2846 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
2847 let style = &self.style;
2848 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2849 let layout = cx
2850 .text_system()
2851 .shape_line(
2852 SharedString::from(" ".repeat(column)),
2853 font_size,
2854 &[TextRun {
2855 len: column,
2856 font: style.text.font(),
2857 color: Hsla::default(),
2858 background_color: None,
2859 underline: None,
2860 strikethrough: None,
2861 }],
2862 )
2863 .unwrap();
2864
2865 layout.width
2866 }
2867
2868 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
2869 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
2870 self.column_pixels(digit_count, cx)
2871 }
2872}
2873
2874fn render_blame_entry(
2875 ix: usize,
2876 blame: &gpui::Model<GitBlame>,
2877 blame_entry: BlameEntry,
2878 text_style: &TextStyle,
2879 last_used_color: &mut Option<(PlayerColor, Oid)>,
2880 editor: View<Editor>,
2881 cx: &mut ElementContext<'_>,
2882) -> AnyElement {
2883 let mut sha_color = cx
2884 .theme()
2885 .players()
2886 .color_for_participant(blame_entry.sha.into());
2887 // If the last color we used is the same as the one we get for this line, but
2888 // the commit SHAs are different, then we try again to get a different color.
2889 match *last_used_color {
2890 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
2891 let index: u32 = blame_entry.sha.into();
2892 sha_color = cx.theme().players().color_for_participant(index + 1);
2893 }
2894 _ => {}
2895 };
2896 last_used_color.replace((sha_color, blame_entry.sha));
2897
2898 let relative_timestamp = match blame_entry.author_offset_date_time() {
2899 Ok(timestamp) => time_format::format_localized_timestamp(
2900 timestamp,
2901 time::OffsetDateTime::now_utc(),
2902 cx.local_timezone(),
2903 time_format::TimestampFormat::Relative,
2904 ),
2905 Err(_) => "Error parsing date".to_string(),
2906 };
2907
2908 let pretty_commit_id = format!("{}", blame_entry.sha);
2909 let short_commit_id = pretty_commit_id.clone().chars().take(6).collect::<String>();
2910
2911 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
2912 let name = util::truncate_and_trailoff(author_name, 20);
2913
2914 let permalink = blame.read(cx).permalink_for_entry(&blame_entry);
2915 let commit_message = blame.read(cx).message_for_entry(&blame_entry);
2916
2917 h_flex()
2918 .w_full()
2919 .font(text_style.font().family)
2920 .line_height(text_style.line_height)
2921 .id(("blame", ix))
2922 .children([
2923 div()
2924 .text_color(sha_color.cursor)
2925 .child(short_commit_id)
2926 .mr_2(),
2927 div()
2928 .w_full()
2929 .h_flex()
2930 .justify_between()
2931 .text_color(cx.theme().status().hint)
2932 .child(name)
2933 .child(relative_timestamp),
2934 ])
2935 .on_mouse_down(MouseButton::Right, {
2936 let blame_entry = blame_entry.clone();
2937 move |event, cx| {
2938 deploy_blame_entry_context_menu(&blame_entry, editor.clone(), event.position, cx);
2939 }
2940 })
2941 .hover(|style| style.bg(cx.theme().colors().element_hover))
2942 .when_some(permalink, |this, url| {
2943 let url = url.clone();
2944 this.cursor_pointer().on_click(move |_, cx| {
2945 cx.stop_propagation();
2946 cx.open_url(url.as_str())
2947 })
2948 })
2949 .tooltip(move |cx| {
2950 BlameEntryTooltip::new(
2951 sha_color.cursor,
2952 commit_message.clone(),
2953 blame_entry.clone(),
2954 cx,
2955 )
2956 })
2957 .into_any()
2958}
2959
2960fn deploy_blame_entry_context_menu(
2961 blame_entry: &BlameEntry,
2962 editor: View<Editor>,
2963 position: gpui::Point<Pixels>,
2964 cx: &mut WindowContext<'_>,
2965) {
2966 let context_menu = ContextMenu::build(cx, move |this, _| {
2967 let sha = format!("{}", blame_entry.sha);
2968 this.entry("Copy commit SHA", None, move |cx| {
2969 cx.write_to_clipboard(ClipboardItem::new(sha.clone()));
2970 })
2971 });
2972
2973 editor.update(cx, move |editor, cx| {
2974 editor.mouse_context_menu = Some(MouseContextMenu::new(position, context_menu, cx));
2975 cx.notify();
2976 });
2977}
2978
2979struct BlameEntryTooltip {
2980 color: Hsla,
2981 commit_message: Option<String>,
2982 blame_entry: BlameEntry,
2983}
2984
2985impl BlameEntryTooltip {
2986 fn new(
2987 color: Hsla,
2988 commit_message: Option<String>,
2989 blame_entry: BlameEntry,
2990 cx: &mut WindowContext,
2991 ) -> AnyView {
2992 cx.new_view(|_cx| Self {
2993 color,
2994 commit_message,
2995 blame_entry,
2996 })
2997 .into()
2998 }
2999}
3000
3001impl Render for BlameEntryTooltip {
3002 fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
3003 let author = self
3004 .blame_entry
3005 .author
3006 .clone()
3007 .unwrap_or("<no name>".to_string());
3008 let author_email = self.blame_entry.author_mail.clone().unwrap_or_default();
3009 let absolute_timestamp = match self.blame_entry.author_offset_date_time() {
3010 Ok(timestamp) => time_format::format_localized_timestamp(
3011 timestamp,
3012 time::OffsetDateTime::now_utc(),
3013 cx.local_timezone(),
3014 time_format::TimestampFormat::Absolute,
3015 ),
3016 Err(_) => "Error parsing date".to_string(),
3017 };
3018
3019 let message = match &self.commit_message {
3020 Some(message) => util::truncate_lines_and_trailoff(message, 15),
3021 None => self.blame_entry.summary.clone().unwrap_or_default(),
3022 };
3023
3024 let pretty_commit_id = format!("{}", self.blame_entry.sha);
3025
3026 tooltip_container(cx, move |this, cx| {
3027 this.occlude()
3028 .on_mouse_move(|_, cx| cx.stop_propagation())
3029 .child(
3030 v_flex()
3031 .child(
3032 h_flex()
3033 .child(
3034 div()
3035 .text_color(cx.theme().colors().text_muted)
3036 .child("Commit")
3037 .pr_2(),
3038 )
3039 .child(
3040 div().text_color(self.color).child(pretty_commit_id.clone()),
3041 ),
3042 )
3043 .child(
3044 div()
3045 .child(format!(
3046 "{} {} - {}",
3047 author, author_email, absolute_timestamp
3048 ))
3049 .text_color(cx.theme().colors().text_muted),
3050 )
3051 .child(div().child(message)),
3052 )
3053 })
3054 }
3055}
3056
3057#[derive(Debug)]
3058pub(crate) struct LineWithInvisibles {
3059 pub line: ShapedLine,
3060 invisibles: Vec<Invisible>,
3061}
3062
3063impl LineWithInvisibles {
3064 fn from_chunks<'a>(
3065 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
3066 text_style: &TextStyle,
3067 max_line_len: usize,
3068 max_line_count: usize,
3069 line_number_layouts: &[Option<ShapedLine>],
3070 editor_mode: EditorMode,
3071 cx: &WindowContext,
3072 ) -> Vec<Self> {
3073 let mut layouts = Vec::with_capacity(max_line_count);
3074 let mut line = String::new();
3075 let mut invisibles = Vec::new();
3076 let mut styles = Vec::new();
3077 let mut non_whitespace_added = false;
3078 let mut row = 0;
3079 let mut line_exceeded_max_len = false;
3080 let font_size = text_style.font_size.to_pixels(cx.rem_size());
3081
3082 for highlighted_chunk in chunks.chain([HighlightedChunk {
3083 chunk: "\n",
3084 style: None,
3085 is_tab: false,
3086 }]) {
3087 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
3088 if ix > 0 {
3089 let shaped_line = cx
3090 .text_system()
3091 .shape_line(line.clone().into(), font_size, &styles)
3092 .unwrap();
3093 layouts.push(Self {
3094 line: shaped_line,
3095 invisibles: std::mem::take(&mut invisibles),
3096 });
3097
3098 line.clear();
3099 styles.clear();
3100 row += 1;
3101 line_exceeded_max_len = false;
3102 non_whitespace_added = false;
3103 if row == max_line_count {
3104 return layouts;
3105 }
3106 }
3107
3108 if !line_chunk.is_empty() && !line_exceeded_max_len {
3109 let text_style = if let Some(style) = highlighted_chunk.style {
3110 Cow::Owned(text_style.clone().highlight(style))
3111 } else {
3112 Cow::Borrowed(text_style)
3113 };
3114
3115 if line.len() + line_chunk.len() > max_line_len {
3116 let mut chunk_len = max_line_len - line.len();
3117 while !line_chunk.is_char_boundary(chunk_len) {
3118 chunk_len -= 1;
3119 }
3120 line_chunk = &line_chunk[..chunk_len];
3121 line_exceeded_max_len = true;
3122 }
3123
3124 styles.push(TextRun {
3125 len: line_chunk.len(),
3126 font: text_style.font(),
3127 color: text_style.color,
3128 background_color: text_style.background_color,
3129 underline: text_style.underline,
3130 strikethrough: text_style.strikethrough,
3131 });
3132
3133 if editor_mode == EditorMode::Full {
3134 // Line wrap pads its contents with fake whitespaces,
3135 // avoid printing them
3136 let inside_wrapped_string = line_number_layouts
3137 .get(row)
3138 .and_then(|layout| layout.as_ref())
3139 .is_none();
3140 if highlighted_chunk.is_tab {
3141 if non_whitespace_added || !inside_wrapped_string {
3142 invisibles.push(Invisible::Tab {
3143 line_start_offset: line.len(),
3144 });
3145 }
3146 } else {
3147 invisibles.extend(
3148 line_chunk
3149 .chars()
3150 .enumerate()
3151 .filter(|(_, line_char)| {
3152 let is_whitespace = line_char.is_whitespace();
3153 non_whitespace_added |= !is_whitespace;
3154 is_whitespace
3155 && (non_whitespace_added || !inside_wrapped_string)
3156 })
3157 .map(|(whitespace_index, _)| Invisible::Whitespace {
3158 line_offset: line.len() + whitespace_index,
3159 }),
3160 )
3161 }
3162 }
3163
3164 line.push_str(line_chunk);
3165 }
3166 }
3167 }
3168
3169 layouts
3170 }
3171
3172 fn draw(
3173 &self,
3174 layout: &EditorLayout,
3175 row: u32,
3176 content_origin: gpui::Point<Pixels>,
3177 whitespace_setting: ShowWhitespaceSetting,
3178 selection_ranges: &[Range<DisplayPoint>],
3179 cx: &mut ElementContext,
3180 ) {
3181 let line_height = layout.position_map.line_height;
3182 let line_y =
3183 line_height * (row as f32 - layout.position_map.scroll_pixel_position.y / line_height);
3184
3185 self.line
3186 .paint(
3187 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y),
3188 line_height,
3189 cx,
3190 )
3191 .log_err();
3192
3193 self.draw_invisibles(
3194 &selection_ranges,
3195 layout,
3196 content_origin,
3197 line_y,
3198 row,
3199 line_height,
3200 whitespace_setting,
3201 cx,
3202 );
3203 }
3204
3205 #[allow(clippy::too_many_arguments)]
3206 fn draw_invisibles(
3207 &self,
3208 selection_ranges: &[Range<DisplayPoint>],
3209 layout: &EditorLayout,
3210 content_origin: gpui::Point<Pixels>,
3211 line_y: Pixels,
3212 row: u32,
3213 line_height: Pixels,
3214 whitespace_setting: ShowWhitespaceSetting,
3215 cx: &mut ElementContext,
3216 ) {
3217 let allowed_invisibles_regions = match whitespace_setting {
3218 ShowWhitespaceSetting::None => return,
3219 ShowWhitespaceSetting::Selection => Some(selection_ranges),
3220 ShowWhitespaceSetting::All => None,
3221 };
3222
3223 for invisible in &self.invisibles {
3224 let (&token_offset, invisible_symbol) = match invisible {
3225 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
3226 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
3227 };
3228
3229 let x_offset = self.line.x_for_index(token_offset);
3230 let invisible_offset =
3231 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
3232 let origin = content_origin
3233 + gpui::point(
3234 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
3235 line_y,
3236 );
3237
3238 if let Some(allowed_regions) = allowed_invisibles_regions {
3239 let invisible_point = DisplayPoint::new(row, token_offset as u32);
3240 if !allowed_regions
3241 .iter()
3242 .any(|region| region.start <= invisible_point && invisible_point < region.end)
3243 {
3244 continue;
3245 }
3246 }
3247 invisible_symbol.paint(origin, line_height, cx).log_err();
3248 }
3249 }
3250}
3251
3252#[derive(Debug, Clone, Copy, PartialEq, Eq)]
3253enum Invisible {
3254 Tab { line_start_offset: usize },
3255 Whitespace { line_offset: usize },
3256}
3257
3258impl Element for EditorElement {
3259 type BeforeLayout = ();
3260 type AfterLayout = EditorLayout;
3261
3262 fn before_layout(&mut self, cx: &mut ElementContext) -> (gpui::LayoutId, ()) {
3263 self.editor.update(cx, |editor, cx| {
3264 editor.set_style(self.style.clone(), cx);
3265
3266 let layout_id = match editor.mode {
3267 EditorMode::SingleLine => {
3268 let rem_size = cx.rem_size();
3269 let mut style = Style::default();
3270 style.size.width = relative(1.).into();
3271 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
3272 cx.with_element_context(|cx| cx.request_layout(&style, None))
3273 }
3274 EditorMode::AutoHeight { max_lines } => {
3275 let editor_handle = cx.view().clone();
3276 let max_line_number_width =
3277 self.max_line_number_width(&editor.snapshot(cx), cx);
3278 cx.with_element_context(|cx| {
3279 cx.request_measured_layout(
3280 Style::default(),
3281 move |known_dimensions, _, cx| {
3282 editor_handle
3283 .update(cx, |editor, cx| {
3284 compute_auto_height_layout(
3285 editor,
3286 max_lines,
3287 max_line_number_width,
3288 known_dimensions,
3289 cx,
3290 )
3291 })
3292 .unwrap_or_default()
3293 },
3294 )
3295 })
3296 }
3297 EditorMode::Full => {
3298 let mut style = Style::default();
3299 style.size.width = relative(1.).into();
3300 style.size.height = relative(1.).into();
3301 cx.with_element_context(|cx| cx.request_layout(&style, None))
3302 }
3303 };
3304
3305 (layout_id, ())
3306 })
3307 }
3308
3309 fn after_layout(
3310 &mut self,
3311 bounds: Bounds<Pixels>,
3312 _: &mut Self::BeforeLayout,
3313 cx: &mut ElementContext,
3314 ) -> Self::AfterLayout {
3315 let text_style = TextStyleRefinement {
3316 font_size: Some(self.style.text.font_size),
3317 line_height: Some(self.style.text.line_height),
3318 ..Default::default()
3319 };
3320 cx.with_text_style(Some(text_style), |cx| {
3321 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3322 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
3323 let style = self.style.clone();
3324
3325 let font_id = cx.text_system().resolve_font(&style.text.font());
3326 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3327 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3328 let em_width = cx
3329 .text_system()
3330 .typographic_bounds(font_id, font_size, 'm')
3331 .unwrap()
3332 .size
3333 .width;
3334 let em_advance = cx
3335 .text_system()
3336 .advance(font_id, font_size, 'm')
3337 .unwrap()
3338 .width;
3339
3340 let gutter_dimensions = snapshot.gutter_dimensions(
3341 font_id,
3342 font_size,
3343 em_width,
3344 self.max_line_number_width(&snapshot, cx),
3345 cx,
3346 );
3347 let text_width = bounds.size.width - gutter_dimensions.width;
3348 let overscroll = size(em_width, px(0.));
3349
3350 snapshot = self.editor.update(cx, |editor, cx| {
3351 editor.gutter_width = gutter_dimensions.width;
3352 editor.set_visible_line_count(bounds.size.height / line_height, cx);
3353
3354 let editor_width =
3355 text_width - gutter_dimensions.margin - overscroll.width - em_width;
3356 let wrap_width = match editor.soft_wrap_mode(cx) {
3357 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
3358 SoftWrap::EditorWidth => editor_width,
3359 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
3360 };
3361
3362 if editor.set_wrap_width(Some(wrap_width), cx) {
3363 editor.snapshot(cx)
3364 } else {
3365 snapshot
3366 }
3367 });
3368
3369 let wrap_guides = self
3370 .editor
3371 .read(cx)
3372 .wrap_guides(cx)
3373 .iter()
3374 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
3375 .collect::<SmallVec<[_; 2]>>();
3376
3377 let hitbox = cx.insert_hitbox(bounds, false);
3378 let gutter_hitbox = cx.insert_hitbox(
3379 Bounds {
3380 origin: bounds.origin,
3381 size: size(gutter_dimensions.width, bounds.size.height),
3382 },
3383 false,
3384 );
3385 let text_hitbox = cx.insert_hitbox(
3386 Bounds {
3387 origin: gutter_hitbox.upper_right(),
3388 size: size(text_width, bounds.size.height),
3389 },
3390 false,
3391 );
3392 // Offset the content_bounds from the text_bounds by the gutter margin (which
3393 // is roughly half a character wide) to make hit testing work more like how we want.
3394 let content_origin =
3395 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
3396
3397 let autoscroll_horizontally = self.editor.update(cx, |editor, cx| {
3398 let autoscroll_horizontally =
3399 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
3400 snapshot = editor.snapshot(cx);
3401 autoscroll_horizontally
3402 });
3403
3404 let mut scroll_position = snapshot.scroll_position();
3405 // The scroll position is a fractional point, the whole number of which represents
3406 // the top of the window in terms of display rows.
3407 let start_row = scroll_position.y as u32;
3408 let height_in_lines = bounds.size.height / line_height;
3409 let max_row = snapshot.max_point().row();
3410
3411 // Add 1 to ensure selections bleed off screen
3412 let end_row =
3413 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
3414
3415 let buffer_rows = snapshot
3416 .buffer_rows(start_row)
3417 .take((start_row..end_row).len());
3418
3419 let start_anchor = if start_row == 0 {
3420 Anchor::min()
3421 } else {
3422 snapshot.buffer_snapshot.anchor_before(
3423 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
3424 )
3425 };
3426 let end_anchor = if end_row > max_row {
3427 Anchor::max()
3428 } else {
3429 snapshot.buffer_snapshot.anchor_before(
3430 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
3431 )
3432 };
3433
3434 let highlighted_rows = self
3435 .editor
3436 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
3437 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
3438 start_anchor..end_anchor,
3439 &snapshot.display_snapshot,
3440 cx.theme().colors(),
3441 );
3442
3443 let redacted_ranges = self.editor.read(cx).redacted_ranges(
3444 start_anchor..end_anchor,
3445 &snapshot.display_snapshot,
3446 cx,
3447 );
3448
3449 let (selections, active_rows, newest_selection_head) = self.layout_selections(
3450 start_anchor,
3451 end_anchor,
3452 &snapshot,
3453 start_row,
3454 end_row,
3455 cx,
3456 );
3457
3458 let (line_numbers, fold_statuses) = self.layout_line_numbers(
3459 start_row..end_row,
3460 buffer_rows.clone(),
3461 &active_rows,
3462 newest_selection_head,
3463 &snapshot,
3464 cx,
3465 );
3466
3467 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
3468
3469 let blamed_display_rows = self.layout_blame_entries(
3470 buffer_rows,
3471 em_width,
3472 scroll_position,
3473 line_height,
3474 &gutter_hitbox,
3475 gutter_dimensions.git_blame_entries_width,
3476 cx,
3477 );
3478
3479 let mut max_visible_line_width = Pixels::ZERO;
3480 let line_layouts =
3481 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
3482 for line_with_invisibles in &line_layouts {
3483 if line_with_invisibles.line.width > max_visible_line_width {
3484 max_visible_line_width = line_with_invisibles.line.width;
3485 }
3486 }
3487
3488 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
3489 .unwrap()
3490 .width;
3491 let mut scroll_width =
3492 longest_line_width.max(max_visible_line_width) + overscroll.width;
3493 let mut blocks = self.build_blocks(
3494 start_row..end_row,
3495 &snapshot,
3496 &hitbox,
3497 &text_hitbox,
3498 &mut scroll_width,
3499 &gutter_dimensions,
3500 em_width,
3501 gutter_dimensions.width + gutter_dimensions.margin,
3502 line_height,
3503 &line_layouts,
3504 cx,
3505 );
3506
3507 let scroll_max = point(
3508 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
3509 max_row as f32,
3510 );
3511
3512 self.editor.update(cx, |editor, cx| {
3513 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3514
3515 let autoscrolled = if autoscroll_horizontally {
3516 editor.autoscroll_horizontally(
3517 start_row,
3518 text_hitbox.size.width,
3519 scroll_width,
3520 em_width,
3521 &line_layouts,
3522 cx,
3523 )
3524 } else {
3525 false
3526 };
3527
3528 if clamped || autoscrolled {
3529 snapshot = editor.snapshot(cx);
3530 scroll_position = snapshot.scroll_position();
3531 }
3532 });
3533
3534 let scroll_pixel_position = point(
3535 scroll_position.x * em_width,
3536 scroll_position.y * line_height,
3537 );
3538
3539 cx.with_element_id(Some("blocks"), |cx| {
3540 self.layout_blocks(
3541 &mut blocks,
3542 &hitbox,
3543 line_height,
3544 scroll_pixel_position,
3545 cx,
3546 );
3547 });
3548
3549 let cursors = self.layout_cursors(
3550 &snapshot,
3551 &selections,
3552 start_row..end_row,
3553 &line_layouts,
3554 &text_hitbox,
3555 content_origin,
3556 scroll_pixel_position,
3557 line_height,
3558 em_width,
3559 cx,
3560 );
3561
3562 let scrollbar_layout = self.layout_scrollbar(
3563 &snapshot,
3564 bounds,
3565 scroll_position,
3566 line_height,
3567 height_in_lines,
3568 cx,
3569 );
3570
3571 let folds = cx.with_element_id(Some("folds"), |cx| {
3572 self.layout_folds(
3573 &snapshot,
3574 content_origin,
3575 start_anchor..end_anchor,
3576 start_row..end_row,
3577 scroll_pixel_position,
3578 line_height,
3579 &line_layouts,
3580 cx,
3581 )
3582 });
3583
3584 let gutter_settings = EditorSettings::get_global(cx).gutter;
3585
3586 let mut context_menu_visible = false;
3587 let mut code_actions_indicator = None;
3588 if let Some(newest_selection_head) = newest_selection_head {
3589 if (start_row..end_row).contains(&newest_selection_head.row()) {
3590 context_menu_visible = self.layout_context_menu(
3591 line_height,
3592 &hitbox,
3593 &text_hitbox,
3594 content_origin,
3595 start_row,
3596 scroll_pixel_position,
3597 &line_layouts,
3598 newest_selection_head,
3599 cx,
3600 );
3601 if gutter_settings.code_actions {
3602 code_actions_indicator = self.layout_code_actions_indicator(
3603 line_height,
3604 newest_selection_head,
3605 scroll_pixel_position,
3606 &gutter_dimensions,
3607 &gutter_hitbox,
3608 cx,
3609 );
3610 }
3611 }
3612 }
3613
3614 if !context_menu_visible && !cx.has_active_drag() {
3615 self.layout_hover_popovers(
3616 &snapshot,
3617 &hitbox,
3618 &text_hitbox,
3619 start_row..end_row,
3620 content_origin,
3621 scroll_pixel_position,
3622 &line_layouts,
3623 line_height,
3624 em_width,
3625 cx,
3626 );
3627 }
3628
3629 let mouse_context_menu = self.layout_mouse_context_menu(cx);
3630
3631 let fold_indicators = if gutter_settings.folds {
3632 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
3633 self.layout_gutter_fold_indicators(
3634 fold_statuses,
3635 line_height,
3636 &gutter_dimensions,
3637 gutter_settings,
3638 scroll_pixel_position,
3639 &gutter_hitbox,
3640 cx,
3641 )
3642 })
3643 } else {
3644 Vec::new()
3645 };
3646
3647 let invisible_symbol_font_size = font_size / 2.;
3648 let tab_invisible = cx
3649 .text_system()
3650 .shape_line(
3651 "→".into(),
3652 invisible_symbol_font_size,
3653 &[TextRun {
3654 len: "→".len(),
3655 font: self.style.text.font(),
3656 color: cx.theme().colors().editor_invisible,
3657 background_color: None,
3658 underline: None,
3659 strikethrough: None,
3660 }],
3661 )
3662 .unwrap();
3663 let space_invisible = cx
3664 .text_system()
3665 .shape_line(
3666 "•".into(),
3667 invisible_symbol_font_size,
3668 &[TextRun {
3669 len: "•".len(),
3670 font: self.style.text.font(),
3671 color: cx.theme().colors().editor_invisible,
3672 background_color: None,
3673 underline: None,
3674 strikethrough: None,
3675 }],
3676 )
3677 .unwrap();
3678
3679 EditorLayout {
3680 mode: snapshot.mode,
3681 position_map: Arc::new(PositionMap {
3682 size: bounds.size,
3683 scroll_pixel_position,
3684 scroll_max,
3685 line_layouts,
3686 line_height,
3687 em_width,
3688 em_advance,
3689 snapshot,
3690 }),
3691 visible_display_row_range: start_row..end_row,
3692 wrap_guides,
3693 hitbox,
3694 text_hitbox,
3695 gutter_hitbox,
3696 gutter_dimensions,
3697 content_origin,
3698 scrollbar_layout,
3699 max_row,
3700 active_rows,
3701 highlighted_rows,
3702 highlighted_ranges,
3703 redacted_ranges,
3704 line_numbers,
3705 display_hunks,
3706 blamed_display_rows,
3707 folds,
3708 blocks,
3709 cursors,
3710 selections,
3711 mouse_context_menu,
3712 code_actions_indicator,
3713 fold_indicators,
3714 tab_invisible,
3715 space_invisible,
3716 }
3717 })
3718 })
3719 }
3720
3721 fn paint(
3722 &mut self,
3723 bounds: Bounds<gpui::Pixels>,
3724 _: &mut Self::BeforeLayout,
3725 layout: &mut Self::AfterLayout,
3726 cx: &mut ElementContext,
3727 ) {
3728 let focus_handle = self.editor.focus_handle(cx);
3729 let key_context = self.editor.read(cx).key_context(cx);
3730 cx.set_focus_handle(&focus_handle);
3731 cx.set_key_context(key_context);
3732 cx.set_view_id(self.editor.entity_id());
3733 cx.handle_input(
3734 &focus_handle,
3735 ElementInputHandler::new(bounds, self.editor.clone()),
3736 );
3737 self.register_actions(cx);
3738 self.register_key_listeners(cx, layout);
3739
3740 let text_style = TextStyleRefinement {
3741 font_size: Some(self.style.text.font_size),
3742 line_height: Some(self.style.text.line_height),
3743 ..Default::default()
3744 };
3745 cx.with_text_style(Some(text_style), |cx| {
3746 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3747 self.paint_mouse_listeners(layout, cx);
3748
3749 self.paint_background(layout, cx);
3750 if layout.gutter_hitbox.size.width > Pixels::ZERO {
3751 self.paint_gutter(layout, cx);
3752 }
3753 self.paint_text(layout, cx);
3754
3755 if !layout.blocks.is_empty() {
3756 cx.with_element_id(Some("blocks"), |cx| {
3757 self.paint_blocks(layout, cx);
3758 });
3759 }
3760
3761 self.paint_scrollbar(layout, cx);
3762 self.paint_mouse_context_menu(layout, cx);
3763 });
3764 })
3765 }
3766}
3767
3768impl IntoElement for EditorElement {
3769 type Element = Self;
3770
3771 fn into_element(self) -> Self::Element {
3772 self
3773 }
3774}
3775
3776type BufferRow = u32;
3777
3778pub struct EditorLayout {
3779 position_map: Arc<PositionMap>,
3780 hitbox: Hitbox,
3781 text_hitbox: Hitbox,
3782 gutter_hitbox: Hitbox,
3783 gutter_dimensions: GutterDimensions,
3784 content_origin: gpui::Point<Pixels>,
3785 scrollbar_layout: Option<ScrollbarLayout>,
3786 mode: EditorMode,
3787 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3788 visible_display_row_range: Range<u32>,
3789 active_rows: BTreeMap<u32, bool>,
3790 highlighted_rows: BTreeMap<u32, Hsla>,
3791 line_numbers: Vec<Option<ShapedLine>>,
3792 display_hunks: Vec<DisplayDiffHunk>,
3793 blamed_display_rows: Option<Vec<AnyElement>>,
3794 folds: Vec<FoldLayout>,
3795 blocks: Vec<BlockLayout>,
3796 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3797 redacted_ranges: Vec<Range<DisplayPoint>>,
3798 cursors: Vec<CursorLayout>,
3799 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3800 max_row: u32,
3801 code_actions_indicator: Option<AnyElement>,
3802 fold_indicators: Vec<Option<AnyElement>>,
3803 mouse_context_menu: Option<AnyElement>,
3804 tab_invisible: ShapedLine,
3805 space_invisible: ShapedLine,
3806}
3807
3808impl EditorLayout {
3809 fn line_end_overshoot(&self) -> Pixels {
3810 0.15 * self.position_map.line_height
3811 }
3812}
3813
3814struct ScrollbarLayout {
3815 hitbox: Hitbox,
3816 visible_row_range: Range<f32>,
3817 visible: bool,
3818 height: Pixels,
3819 scroll_height: f32,
3820 first_row_y_offset: Pixels,
3821 row_height: Pixels,
3822}
3823
3824impl ScrollbarLayout {
3825 const BORDER_WIDTH: Pixels = px(1.0);
3826 const MIN_MARKER_HEIGHT: Pixels = px(2.0);
3827
3828 fn thumb_bounds(&self) -> Bounds<Pixels> {
3829 let thumb_top = self.y_for_row(self.visible_row_range.start) - self.first_row_y_offset;
3830 let thumb_bottom = self.y_for_row(self.visible_row_range.end) + self.first_row_y_offset;
3831 Bounds::from_corners(
3832 point(self.hitbox.left(), thumb_top),
3833 point(self.hitbox.right(), thumb_bottom),
3834 )
3835 }
3836
3837 fn y_for_row(&self, row: f32) -> Pixels {
3838 self.hitbox.top() + self.first_row_y_offset + row * self.row_height
3839 }
3840
3841 fn ys_for_marker(&self, start_row: u32, end_row: u32) -> (Pixels, Pixels) {
3842 let start_y = self.y_for_row(start_row as f32);
3843 let mut end_y = self.y_for_row((end_row + 1) as f32);
3844 if end_y - start_y < Self::MIN_MARKER_HEIGHT {
3845 end_y = start_y + Self::MIN_MARKER_HEIGHT;
3846 }
3847 (start_y, end_y)
3848 }
3849}
3850
3851struct FoldLayout {
3852 display_range: Range<DisplayPoint>,
3853 hover_element: AnyElement,
3854}
3855
3856struct PositionMap {
3857 size: Size<Pixels>,
3858 line_height: Pixels,
3859 scroll_pixel_position: gpui::Point<Pixels>,
3860 scroll_max: gpui::Point<f32>,
3861 em_width: Pixels,
3862 em_advance: Pixels,
3863 line_layouts: Vec<LineWithInvisibles>,
3864 snapshot: EditorSnapshot,
3865}
3866
3867#[derive(Debug, Copy, Clone)]
3868pub struct PointForPosition {
3869 pub previous_valid: DisplayPoint,
3870 pub next_valid: DisplayPoint,
3871 pub exact_unclipped: DisplayPoint,
3872 pub column_overshoot_after_line_end: u32,
3873}
3874
3875impl PointForPosition {
3876 pub fn as_valid(&self) -> Option<DisplayPoint> {
3877 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3878 Some(self.previous_valid)
3879 } else {
3880 None
3881 }
3882 }
3883}
3884
3885impl PositionMap {
3886 fn point_for_position(
3887 &self,
3888 text_bounds: Bounds<Pixels>,
3889 position: gpui::Point<Pixels>,
3890 ) -> PointForPosition {
3891 let scroll_position = self.snapshot.scroll_position();
3892 let position = position - text_bounds.origin;
3893 let y = position.y.max(px(0.)).min(self.size.height);
3894 let x = position.x + (scroll_position.x * self.em_width);
3895 let row = ((y / self.line_height) + scroll_position.y) as u32;
3896
3897 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3898 .line_layouts
3899 .get(row as usize - scroll_position.y as usize)
3900 .map(|LineWithInvisibles { line, .. }| line)
3901 {
3902 if let Some(ix) = line.index_for_x(x) {
3903 (ix as u32, px(0.))
3904 } else {
3905 (line.len as u32, px(0.).max(x - line.width))
3906 }
3907 } else {
3908 (0, x)
3909 };
3910
3911 let mut exact_unclipped = DisplayPoint::new(row, column);
3912 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3913 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3914
3915 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3916 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3917 PointForPosition {
3918 previous_valid,
3919 next_valid,
3920 exact_unclipped,
3921 column_overshoot_after_line_end,
3922 }
3923 }
3924}
3925
3926struct BlockLayout {
3927 row: u32,
3928 element: AnyElement,
3929 available_space: Size<AvailableSpace>,
3930 style: BlockStyle,
3931}
3932
3933fn layout_line(
3934 row: u32,
3935 snapshot: &EditorSnapshot,
3936 style: &EditorStyle,
3937 cx: &WindowContext,
3938) -> Result<ShapedLine> {
3939 let mut line = snapshot.line(row);
3940
3941 if line.len() > MAX_LINE_LEN {
3942 let mut len = MAX_LINE_LEN;
3943 while !line.is_char_boundary(len) {
3944 len -= 1;
3945 }
3946
3947 line.truncate(len);
3948 }
3949
3950 cx.text_system().shape_line(
3951 line.into(),
3952 style.text.font_size.to_pixels(cx.rem_size()),
3953 &[TextRun {
3954 len: snapshot.line_len(row) as usize,
3955 font: style.text.font(),
3956 color: Hsla::default(),
3957 background_color: None,
3958 underline: None,
3959 strikethrough: None,
3960 }],
3961 )
3962}
3963
3964pub struct CursorLayout {
3965 origin: gpui::Point<Pixels>,
3966 block_width: Pixels,
3967 line_height: Pixels,
3968 color: Hsla,
3969 shape: CursorShape,
3970 block_text: Option<ShapedLine>,
3971 cursor_name: Option<AnyElement>,
3972}
3973
3974#[derive(Debug)]
3975pub struct CursorName {
3976 string: SharedString,
3977 color: Hsla,
3978 is_top_row: bool,
3979}
3980
3981impl CursorLayout {
3982 pub fn new(
3983 origin: gpui::Point<Pixels>,
3984 block_width: Pixels,
3985 line_height: Pixels,
3986 color: Hsla,
3987 shape: CursorShape,
3988 block_text: Option<ShapedLine>,
3989 ) -> CursorLayout {
3990 CursorLayout {
3991 origin,
3992 block_width,
3993 line_height,
3994 color,
3995 shape,
3996 block_text,
3997 cursor_name: None,
3998 }
3999 }
4000
4001 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
4002 Bounds {
4003 origin: self.origin + origin,
4004 size: size(self.block_width, self.line_height),
4005 }
4006 }
4007
4008 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
4009 match self.shape {
4010 CursorShape::Bar => Bounds {
4011 origin: self.origin + origin,
4012 size: size(px(2.0), self.line_height),
4013 },
4014 CursorShape::Block | CursorShape::Hollow => Bounds {
4015 origin: self.origin + origin,
4016 size: size(self.block_width, self.line_height),
4017 },
4018 CursorShape::Underscore => Bounds {
4019 origin: self.origin
4020 + origin
4021 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
4022 size: size(self.block_width, px(2.0)),
4023 },
4024 }
4025 }
4026
4027 pub fn layout(
4028 &mut self,
4029 origin: gpui::Point<Pixels>,
4030 cursor_name: Option<CursorName>,
4031 cx: &mut ElementContext,
4032 ) {
4033 if let Some(cursor_name) = cursor_name {
4034 let bounds = self.bounds(origin);
4035 let text_size = self.line_height / 1.5;
4036
4037 let name_origin = if cursor_name.is_top_row {
4038 point(bounds.right() - px(1.), bounds.top())
4039 } else {
4040 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
4041 };
4042 let mut name_element = div()
4043 .bg(self.color)
4044 .text_size(text_size)
4045 .px_0p5()
4046 .line_height(text_size + px(2.))
4047 .text_color(cursor_name.color)
4048 .child(cursor_name.string.clone())
4049 .into_any_element();
4050
4051 name_element.layout(
4052 name_origin,
4053 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
4054 cx,
4055 );
4056
4057 self.cursor_name = Some(name_element);
4058 }
4059 }
4060
4061 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
4062 let bounds = self.bounds(origin);
4063
4064 //Draw background or border quad
4065 let cursor = if matches!(self.shape, CursorShape::Hollow) {
4066 outline(bounds, self.color)
4067 } else {
4068 fill(bounds, self.color)
4069 };
4070
4071 if let Some(name) = &mut self.cursor_name {
4072 name.paint(cx);
4073 }
4074
4075 cx.paint_quad(cursor);
4076
4077 if let Some(block_text) = &self.block_text {
4078 block_text
4079 .paint(self.origin + origin, self.line_height, cx)
4080 .log_err();
4081 }
4082 }
4083
4084 pub fn shape(&self) -> CursorShape {
4085 self.shape
4086 }
4087}
4088
4089#[derive(Debug)]
4090pub struct HighlightedRange {
4091 pub start_y: Pixels,
4092 pub line_height: Pixels,
4093 pub lines: Vec<HighlightedRangeLine>,
4094 pub color: Hsla,
4095 pub corner_radius: Pixels,
4096}
4097
4098#[derive(Debug)]
4099pub struct HighlightedRangeLine {
4100 pub start_x: Pixels,
4101 pub end_x: Pixels,
4102}
4103
4104impl HighlightedRange {
4105 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
4106 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
4107 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
4108 self.paint_lines(
4109 self.start_y + self.line_height,
4110 &self.lines[1..],
4111 bounds,
4112 cx,
4113 );
4114 } else {
4115 self.paint_lines(self.start_y, &self.lines, bounds, cx);
4116 }
4117 }
4118
4119 fn paint_lines(
4120 &self,
4121 start_y: Pixels,
4122 lines: &[HighlightedRangeLine],
4123 _bounds: Bounds<Pixels>,
4124 cx: &mut ElementContext,
4125 ) {
4126 if lines.is_empty() {
4127 return;
4128 }
4129
4130 let first_line = lines.first().unwrap();
4131 let last_line = lines.last().unwrap();
4132
4133 let first_top_left = point(first_line.start_x, start_y);
4134 let first_top_right = point(first_line.end_x, start_y);
4135
4136 let curve_height = point(Pixels::ZERO, self.corner_radius);
4137 let curve_width = |start_x: Pixels, end_x: Pixels| {
4138 let max = (end_x - start_x) / 2.;
4139 let width = if max < self.corner_radius {
4140 max
4141 } else {
4142 self.corner_radius
4143 };
4144
4145 point(width, Pixels::ZERO)
4146 };
4147
4148 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
4149 let mut path = gpui::Path::new(first_top_right - top_curve_width);
4150 path.curve_to(first_top_right + curve_height, first_top_right);
4151
4152 let mut iter = lines.iter().enumerate().peekable();
4153 while let Some((ix, line)) = iter.next() {
4154 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
4155
4156 if let Some((_, next_line)) = iter.peek() {
4157 let next_top_right = point(next_line.end_x, bottom_right.y);
4158
4159 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
4160 Ordering::Equal => {
4161 path.line_to(bottom_right);
4162 }
4163 Ordering::Less => {
4164 let curve_width = curve_width(next_top_right.x, bottom_right.x);
4165 path.line_to(bottom_right - curve_height);
4166 if self.corner_radius > Pixels::ZERO {
4167 path.curve_to(bottom_right - curve_width, bottom_right);
4168 }
4169 path.line_to(next_top_right + curve_width);
4170 if self.corner_radius > Pixels::ZERO {
4171 path.curve_to(next_top_right + curve_height, next_top_right);
4172 }
4173 }
4174 Ordering::Greater => {
4175 let curve_width = curve_width(bottom_right.x, next_top_right.x);
4176 path.line_to(bottom_right - curve_height);
4177 if self.corner_radius > Pixels::ZERO {
4178 path.curve_to(bottom_right + curve_width, bottom_right);
4179 }
4180 path.line_to(next_top_right - curve_width);
4181 if self.corner_radius > Pixels::ZERO {
4182 path.curve_to(next_top_right + curve_height, next_top_right);
4183 }
4184 }
4185 }
4186 } else {
4187 let curve_width = curve_width(line.start_x, line.end_x);
4188 path.line_to(bottom_right - curve_height);
4189 if self.corner_radius > Pixels::ZERO {
4190 path.curve_to(bottom_right - curve_width, bottom_right);
4191 }
4192
4193 let bottom_left = point(line.start_x, bottom_right.y);
4194 path.line_to(bottom_left + curve_width);
4195 if self.corner_radius > Pixels::ZERO {
4196 path.curve_to(bottom_left - curve_height, bottom_left);
4197 }
4198 }
4199 }
4200
4201 if first_line.start_x > last_line.start_x {
4202 let curve_width = curve_width(last_line.start_x, first_line.start_x);
4203 let second_top_left = point(last_line.start_x, start_y + self.line_height);
4204 path.line_to(second_top_left + curve_height);
4205 if self.corner_radius > Pixels::ZERO {
4206 path.curve_to(second_top_left + curve_width, second_top_left);
4207 }
4208 let first_bottom_left = point(first_line.start_x, second_top_left.y);
4209 path.line_to(first_bottom_left - curve_width);
4210 if self.corner_radius > Pixels::ZERO {
4211 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
4212 }
4213 }
4214
4215 path.line_to(first_top_left + curve_height);
4216 if self.corner_radius > Pixels::ZERO {
4217 path.curve_to(first_top_left + top_curve_width, first_top_left);
4218 }
4219 path.line_to(first_top_right - top_curve_width);
4220
4221 cx.paint_path(path, self.color);
4222 }
4223}
4224
4225pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
4226 (delta.pow(1.5) / 100.0).into()
4227}
4228
4229fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
4230 (delta.pow(1.2) / 300.0).into()
4231}
4232
4233#[cfg(test)]
4234mod tests {
4235 use super::*;
4236 use crate::{
4237 display_map::{BlockDisposition, BlockProperties},
4238 editor_tests::{init_test, update_test_language_settings},
4239 Editor, MultiBuffer,
4240 };
4241 use gpui::TestAppContext;
4242 use language::language_settings;
4243 use log::info;
4244 use std::{num::NonZeroU32, sync::Arc};
4245 use util::test::sample_text;
4246
4247 #[gpui::test]
4248 fn test_shape_line_numbers(cx: &mut TestAppContext) {
4249 init_test(cx, |_| {});
4250 let window = cx.add_window(|cx| {
4251 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4252 Editor::new(EditorMode::Full, buffer, None, cx)
4253 });
4254
4255 let editor = window.root(cx).unwrap();
4256 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4257 let element = EditorElement::new(&editor, style);
4258 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
4259
4260 let layouts = cx
4261 .update_window(*window, |_, cx| {
4262 cx.with_element_context(|cx| {
4263 element
4264 .layout_line_numbers(
4265 0..6,
4266 (0..6).map(Some),
4267 &Default::default(),
4268 Some(DisplayPoint::new(0, 0)),
4269 &snapshot,
4270 cx,
4271 )
4272 .0
4273 })
4274 })
4275 .unwrap();
4276 assert_eq!(layouts.len(), 6);
4277
4278 let relative_rows =
4279 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(0..6), Some(3));
4280 assert_eq!(relative_rows[&0], 3);
4281 assert_eq!(relative_rows[&1], 2);
4282 assert_eq!(relative_rows[&2], 1);
4283 // current line has no relative number
4284 assert_eq!(relative_rows[&4], 1);
4285 assert_eq!(relative_rows[&5], 2);
4286
4287 // works if cursor is before screen
4288 let relative_rows =
4289 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(3..6), Some(1));
4290 assert_eq!(relative_rows.len(), 3);
4291 assert_eq!(relative_rows[&3], 2);
4292 assert_eq!(relative_rows[&4], 3);
4293 assert_eq!(relative_rows[&5], 4);
4294
4295 // works if cursor is after screen
4296 let relative_rows =
4297 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(0..3), Some(6));
4298 assert_eq!(relative_rows.len(), 3);
4299 assert_eq!(relative_rows[&0], 5);
4300 assert_eq!(relative_rows[&1], 4);
4301 assert_eq!(relative_rows[&2], 3);
4302 }
4303
4304 #[gpui::test]
4305 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
4306 init_test(cx, |_| {});
4307
4308 let window = cx.add_window(|cx| {
4309 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
4310 Editor::new(EditorMode::Full, buffer, None, cx)
4311 });
4312 let editor = window.root(cx).unwrap();
4313 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4314 let mut element = EditorElement::new(&editor, style);
4315
4316 window
4317 .update(cx, |editor, cx| {
4318 editor.cursor_shape = CursorShape::Block;
4319 editor.change_selections(None, cx, |s| {
4320 s.select_ranges([
4321 Point::new(0, 0)..Point::new(1, 0),
4322 Point::new(3, 2)..Point::new(3, 3),
4323 Point::new(5, 6)..Point::new(6, 0),
4324 ]);
4325 });
4326 })
4327 .unwrap();
4328 let state = cx
4329 .update_window(window.into(), |_view, cx| {
4330 cx.with_element_context(|cx| {
4331 element.after_layout(
4332 Bounds {
4333 origin: point(px(500.), px(500.)),
4334 size: size(px(500.), px(500.)),
4335 },
4336 &mut (),
4337 cx,
4338 )
4339 })
4340 })
4341 .unwrap();
4342
4343 assert_eq!(state.selections.len(), 1);
4344 let local_selections = &state.selections[0].1;
4345 assert_eq!(local_selections.len(), 3);
4346 // moves cursor back one line
4347 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
4348 assert_eq!(
4349 local_selections[0].range,
4350 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
4351 );
4352
4353 // moves cursor back one column
4354 assert_eq!(
4355 local_selections[1].range,
4356 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
4357 );
4358 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
4359
4360 // leaves cursor on the max point
4361 assert_eq!(
4362 local_selections[2].range,
4363 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
4364 );
4365 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
4366
4367 // active lines does not include 1 (even though the range of the selection does)
4368 assert_eq!(
4369 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
4370 vec![0, 3, 5, 6]
4371 );
4372
4373 // multi-buffer support
4374 // in DisplayPoint coordinates, this is what we're dealing with:
4375 // 0: [[file
4376 // 1: header]]
4377 // 2: aaaaaa
4378 // 3: bbbbbb
4379 // 4: cccccc
4380 // 5:
4381 // 6: ...
4382 // 7: ffffff
4383 // 8: gggggg
4384 // 9: hhhhhh
4385 // 10:
4386 // 11: [[file
4387 // 12: header]]
4388 // 13: bbbbbb
4389 // 14: cccccc
4390 // 15: dddddd
4391 let window = cx.add_window(|cx| {
4392 let buffer = MultiBuffer::build_multi(
4393 [
4394 (
4395 &(sample_text(8, 6, 'a') + "\n"),
4396 vec![
4397 Point::new(0, 0)..Point::new(3, 0),
4398 Point::new(4, 0)..Point::new(7, 0),
4399 ],
4400 ),
4401 (
4402 &(sample_text(8, 6, 'a') + "\n"),
4403 vec![Point::new(1, 0)..Point::new(3, 0)],
4404 ),
4405 ],
4406 cx,
4407 );
4408 Editor::new(EditorMode::Full, buffer, None, cx)
4409 });
4410 let editor = window.root(cx).unwrap();
4411 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4412 let mut element = EditorElement::new(&editor, style);
4413 let _state = window.update(cx, |editor, cx| {
4414 editor.cursor_shape = CursorShape::Block;
4415 editor.change_selections(None, cx, |s| {
4416 s.select_display_ranges([
4417 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
4418 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
4419 ]);
4420 });
4421 });
4422
4423 let state = cx
4424 .update_window(window.into(), |_view, cx| {
4425 cx.with_element_context(|cx| {
4426 element.after_layout(
4427 Bounds {
4428 origin: point(px(500.), px(500.)),
4429 size: size(px(500.), px(500.)),
4430 },
4431 &mut (),
4432 cx,
4433 )
4434 })
4435 })
4436 .unwrap();
4437 assert_eq!(state.selections.len(), 1);
4438 let local_selections = &state.selections[0].1;
4439 assert_eq!(local_selections.len(), 2);
4440
4441 // moves cursor on excerpt boundary back a line
4442 // and doesn't allow selection to bleed through
4443 assert_eq!(
4444 local_selections[0].range,
4445 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
4446 );
4447 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
4448 // moves cursor on buffer boundary back two lines
4449 // and doesn't allow selection to bleed through
4450 assert_eq!(
4451 local_selections[1].range,
4452 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
4453 );
4454 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
4455 }
4456
4457 #[gpui::test]
4458 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
4459 init_test(cx, |_| {});
4460
4461 let window = cx.add_window(|cx| {
4462 let buffer = MultiBuffer::build_simple("", cx);
4463 Editor::new(EditorMode::Full, buffer, None, cx)
4464 });
4465 let editor = window.root(cx).unwrap();
4466 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4467 window
4468 .update(cx, |editor, cx| {
4469 editor.set_placeholder_text("hello", cx);
4470 editor.insert_blocks(
4471 [BlockProperties {
4472 style: BlockStyle::Fixed,
4473 disposition: BlockDisposition::Above,
4474 height: 3,
4475 position: Anchor::min(),
4476 render: Arc::new(|_| div().into_any()),
4477 }],
4478 None,
4479 cx,
4480 );
4481
4482 // Blur the editor so that it displays placeholder text.
4483 cx.blur();
4484 })
4485 .unwrap();
4486
4487 let mut element = EditorElement::new(&editor, style);
4488 let state = cx
4489 .update_window(window.into(), |_view, cx| {
4490 cx.with_element_context(|cx| {
4491 element.after_layout(
4492 Bounds {
4493 origin: point(px(500.), px(500.)),
4494 size: size(px(500.), px(500.)),
4495 },
4496 &mut (),
4497 cx,
4498 )
4499 })
4500 })
4501 .unwrap();
4502
4503 assert_eq!(state.position_map.line_layouts.len(), 4);
4504 assert_eq!(
4505 state
4506 .line_numbers
4507 .iter()
4508 .map(Option::is_some)
4509 .collect::<Vec<_>>(),
4510 &[false, false, false, true]
4511 );
4512 }
4513
4514 #[gpui::test]
4515 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
4516 const TAB_SIZE: u32 = 4;
4517
4518 let input_text = "\t \t|\t| a b";
4519 let expected_invisibles = vec![
4520 Invisible::Tab {
4521 line_start_offset: 0,
4522 },
4523 Invisible::Whitespace {
4524 line_offset: TAB_SIZE as usize,
4525 },
4526 Invisible::Tab {
4527 line_start_offset: TAB_SIZE as usize + 1,
4528 },
4529 Invisible::Tab {
4530 line_start_offset: TAB_SIZE as usize * 2 + 1,
4531 },
4532 Invisible::Whitespace {
4533 line_offset: TAB_SIZE as usize * 3 + 1,
4534 },
4535 Invisible::Whitespace {
4536 line_offset: TAB_SIZE as usize * 3 + 3,
4537 },
4538 ];
4539 assert_eq!(
4540 expected_invisibles.len(),
4541 input_text
4542 .chars()
4543 .filter(|initial_char| initial_char.is_whitespace())
4544 .count(),
4545 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4546 );
4547
4548 init_test(cx, |s| {
4549 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4550 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
4551 });
4552
4553 let actual_invisibles =
4554 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
4555
4556 assert_eq!(expected_invisibles, actual_invisibles);
4557 }
4558
4559 #[gpui::test]
4560 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
4561 init_test(cx, |s| {
4562 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4563 s.defaults.tab_size = NonZeroU32::new(4);
4564 });
4565
4566 for editor_mode_without_invisibles in [
4567 EditorMode::SingleLine,
4568 EditorMode::AutoHeight { max_lines: 100 },
4569 ] {
4570 let invisibles = collect_invisibles_from_new_editor(
4571 cx,
4572 editor_mode_without_invisibles,
4573 "\t\t\t| | a b",
4574 px(500.0),
4575 );
4576 assert!(invisibles.is_empty(),
4577 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4578 }
4579 }
4580
4581 #[gpui::test]
4582 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4583 let tab_size = 4;
4584 let input_text = "a\tbcd ".repeat(9);
4585 let repeated_invisibles = [
4586 Invisible::Tab {
4587 line_start_offset: 1,
4588 },
4589 Invisible::Whitespace {
4590 line_offset: tab_size as usize + 3,
4591 },
4592 Invisible::Whitespace {
4593 line_offset: tab_size as usize + 4,
4594 },
4595 Invisible::Whitespace {
4596 line_offset: tab_size as usize + 5,
4597 },
4598 ];
4599 let expected_invisibles = std::iter::once(repeated_invisibles)
4600 .cycle()
4601 .take(9)
4602 .flatten()
4603 .collect::<Vec<_>>();
4604 assert_eq!(
4605 expected_invisibles.len(),
4606 input_text
4607 .chars()
4608 .filter(|initial_char| initial_char.is_whitespace())
4609 .count(),
4610 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4611 );
4612 info!("Expected invisibles: {expected_invisibles:?}");
4613
4614 init_test(cx, |_| {});
4615
4616 // Put the same string with repeating whitespace pattern into editors of various size,
4617 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4618 let resize_step = 10.0;
4619 let mut editor_width = 200.0;
4620 while editor_width <= 1000.0 {
4621 update_test_language_settings(cx, |s| {
4622 s.defaults.tab_size = NonZeroU32::new(tab_size);
4623 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4624 s.defaults.preferred_line_length = Some(editor_width as u32);
4625 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4626 });
4627
4628 let actual_invisibles = collect_invisibles_from_new_editor(
4629 cx,
4630 EditorMode::Full,
4631 &input_text,
4632 px(editor_width),
4633 );
4634
4635 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4636 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4637 let mut i = 0;
4638 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4639 i = actual_index;
4640 match expected_invisibles.get(i) {
4641 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4642 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4643 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4644 _ => {
4645 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4646 }
4647 },
4648 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4649 }
4650 }
4651 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4652 assert!(
4653 missing_expected_invisibles.is_empty(),
4654 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4655 );
4656
4657 editor_width += resize_step;
4658 }
4659 }
4660
4661 fn collect_invisibles_from_new_editor(
4662 cx: &mut TestAppContext,
4663 editor_mode: EditorMode,
4664 input_text: &str,
4665 editor_width: Pixels,
4666 ) -> Vec<Invisible> {
4667 info!(
4668 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4669 editor_width.0
4670 );
4671 let window = cx.add_window(|cx| {
4672 let buffer = MultiBuffer::build_simple(&input_text, cx);
4673 Editor::new(editor_mode, buffer, None, cx)
4674 });
4675 let editor = window.root(cx).unwrap();
4676 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4677 let mut element = EditorElement::new(&editor, style);
4678 window
4679 .update(cx, |editor, cx| {
4680 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4681 editor.set_wrap_width(Some(editor_width), cx);
4682 })
4683 .unwrap();
4684 let layout_state = cx
4685 .update_window(window.into(), |_, cx| {
4686 cx.with_element_context(|cx| {
4687 element.after_layout(
4688 Bounds {
4689 origin: point(px(500.), px(500.)),
4690 size: size(px(500.), px(500.)),
4691 },
4692 &mut (),
4693 cx,
4694 )
4695 })
4696 })
4697 .unwrap();
4698
4699 layout_state
4700 .position_map
4701 .line_layouts
4702 .iter()
4703 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
4704 .cloned()
4705 .collect()
4706 }
4707}
4708
4709pub fn register_action<T: Action>(
4710 view: &View<Editor>,
4711 cx: &mut WindowContext,
4712 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4713) {
4714 let view = view.clone();
4715 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4716 let action = action.downcast_ref().unwrap();
4717 if phase == DispatchPhase::Bubble {
4718 view.update(cx, |editor, cx| {
4719 listener(editor, action, cx);
4720 })
4721 }
4722 })
4723}
4724
4725fn compute_auto_height_layout(
4726 editor: &mut Editor,
4727 max_lines: usize,
4728 max_line_number_width: Pixels,
4729 known_dimensions: Size<Option<Pixels>>,
4730 cx: &mut ViewContext<Editor>,
4731) -> Option<Size<Pixels>> {
4732 let width = known_dimensions.width?;
4733 if let Some(height) = known_dimensions.height {
4734 return Some(size(width, height));
4735 }
4736
4737 let style = editor.style.as_ref().unwrap();
4738 let font_id = cx.text_system().resolve_font(&style.text.font());
4739 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4740 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4741 let em_width = cx
4742 .text_system()
4743 .typographic_bounds(font_id, font_size, 'm')
4744 .unwrap()
4745 .size
4746 .width;
4747
4748 let mut snapshot = editor.snapshot(cx);
4749 let gutter_dimensions =
4750 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4751
4752 editor.gutter_width = gutter_dimensions.width;
4753 let text_width = width - gutter_dimensions.width;
4754 let overscroll = size(em_width, px(0.));
4755
4756 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4757 if editor.set_wrap_width(Some(editor_width), cx) {
4758 snapshot = editor.snapshot(cx);
4759 }
4760
4761 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4762 let height = scroll_height
4763 .max(line_height)
4764 .min(line_height * max_lines as f32);
4765
4766 Some(size(width, height))
4767}