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, PaintQuad,
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
2374 // Refresh scrollbar markers in the background. Below, we paint whatever markers have already been computed.
2375 self.refresh_scrollbar_markers(layout, scrollbar_layout, cx);
2376
2377 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
2378 for marker in markers.iter() {
2379 let mut marker = marker.clone();
2380 marker.bounds.origin += scrollbar_layout.hitbox.origin;
2381 cx.paint_quad(marker);
2382 }
2383
2384 cx.paint_quad(quad(
2385 thumb_bounds,
2386 Corners::default(),
2387 cx.theme().colors().scrollbar_thumb_background,
2388 Edges {
2389 top: Pixels::ZERO,
2390 right: Pixels::ZERO,
2391 bottom: Pixels::ZERO,
2392 left: ScrollbarLayout::BORDER_WIDTH,
2393 },
2394 cx.theme().colors().scrollbar_thumb_border,
2395 ));
2396 });
2397 }
2398
2399 cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
2400
2401 let scroll_height = scrollbar_layout.scroll_height;
2402 let height = scrollbar_layout.height;
2403 let row_range = scrollbar_layout.visible_row_range.clone();
2404
2405 cx.on_mouse_event({
2406 let editor = self.editor.clone();
2407 let hitbox = scrollbar_layout.hitbox.clone();
2408 let mut mouse_position = cx.mouse_position();
2409 move |event: &MouseMoveEvent, phase, cx| {
2410 if phase == DispatchPhase::Capture {
2411 return;
2412 }
2413
2414 editor.update(cx, |editor, cx| {
2415 if event.pressed_button == Some(MouseButton::Left)
2416 && editor.scroll_manager.is_dragging_scrollbar()
2417 {
2418 let y = mouse_position.y;
2419 let new_y = event.position.y;
2420 if (hitbox.top()..hitbox.bottom()).contains(&y) {
2421 let mut position = editor.scroll_position(cx);
2422 position.y += (new_y - y) * scroll_height / height;
2423 if position.y < 0.0 {
2424 position.y = 0.0;
2425 }
2426 editor.set_scroll_position(position, cx);
2427 }
2428
2429 mouse_position = event.position;
2430 cx.stop_propagation();
2431 } else {
2432 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2433 if hitbox.is_hovered(cx) {
2434 editor.scroll_manager.show_scrollbar(cx);
2435 }
2436 }
2437 })
2438 }
2439 });
2440
2441 if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
2442 cx.on_mouse_event({
2443 let editor = self.editor.clone();
2444 move |_: &MouseUpEvent, phase, cx| {
2445 if phase == DispatchPhase::Capture {
2446 return;
2447 }
2448
2449 editor.update(cx, |editor, cx| {
2450 editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
2451 cx.stop_propagation();
2452 });
2453 }
2454 });
2455 } else {
2456 cx.on_mouse_event({
2457 let editor = self.editor.clone();
2458 let hitbox = scrollbar_layout.hitbox.clone();
2459 move |event: &MouseDownEvent, phase, cx| {
2460 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
2461 return;
2462 }
2463
2464 editor.update(cx, |editor, cx| {
2465 editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
2466
2467 let y = event.position.y;
2468 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
2469 let center_row =
2470 ((y - hitbox.top()) * scroll_height / height).round() as u32;
2471 let top_row = center_row
2472 .saturating_sub((row_range.end - row_range.start) as u32 / 2);
2473 let mut position = editor.scroll_position(cx);
2474 position.y = top_row as f32;
2475 editor.set_scroll_position(position, cx);
2476 } else {
2477 editor.scroll_manager.show_scrollbar(cx);
2478 }
2479
2480 cx.stop_propagation();
2481 });
2482 }
2483 });
2484 }
2485 }
2486
2487 fn refresh_scrollbar_markers(
2488 &self,
2489 layout: &EditorLayout,
2490 scrollbar_layout: &ScrollbarLayout,
2491 cx: &mut ElementContext,
2492 ) {
2493 self.editor.update(cx, |editor, cx| {
2494 if !editor.is_singleton(cx)
2495 || !editor
2496 .scrollbar_marker_state
2497 .should_refresh(scrollbar_layout.hitbox.size)
2498 {
2499 return;
2500 }
2501
2502 let scrollbar_layout = scrollbar_layout.clone();
2503 let background_highlights = editor.background_highlights.clone();
2504 let snapshot = layout.position_map.snapshot.clone();
2505 let theme = cx.theme().clone();
2506 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
2507 let max_row = layout.max_row;
2508
2509 editor.scrollbar_marker_state.dirty = false;
2510 editor.scrollbar_marker_state.pending_refresh =
2511 Some(cx.spawn(|editor, mut cx| async move {
2512 let scrollbar_size = scrollbar_layout.hitbox.size;
2513 let scrollbar_markers = cx
2514 .background_executor()
2515 .spawn(async move {
2516 let mut marker_quads = Vec::new();
2517
2518 if scrollbar_settings.git_diff {
2519 let marker_row_ranges = snapshot
2520 .buffer_snapshot
2521 .git_diff_hunks_in_range(0..max_row)
2522 .map(|hunk| {
2523 let start_display_row =
2524 Point::new(hunk.associated_range.start, 0)
2525 .to_display_point(&snapshot.display_snapshot)
2526 .row();
2527 let mut end_display_row =
2528 Point::new(hunk.associated_range.end, 0)
2529 .to_display_point(&snapshot.display_snapshot)
2530 .row();
2531 if end_display_row != start_display_row {
2532 end_display_row -= 1;
2533 }
2534 let color = match hunk.status() {
2535 DiffHunkStatus::Added => theme.status().created,
2536 DiffHunkStatus::Modified => theme.status().modified,
2537 DiffHunkStatus::Removed => theme.status().deleted,
2538 };
2539 ColoredRange {
2540 start: start_display_row,
2541 end: end_display_row,
2542 color,
2543 }
2544 });
2545
2546 marker_quads.extend(
2547 scrollbar_layout.marker_quads_for_ranges(marker_row_ranges, 0),
2548 );
2549 }
2550
2551 for (background_highlight_id, (_, background_ranges)) in
2552 background_highlights.iter()
2553 {
2554 if (*background_highlight_id
2555 == TypeId::of::<BufferSearchHighlights>()
2556 && scrollbar_settings.selections)
2557 || scrollbar_settings.symbols_selections
2558 {
2559 let marker_row_ranges =
2560 background_ranges.into_iter().map(|range| {
2561 let display_start = range
2562 .start
2563 .to_display_point(&snapshot.display_snapshot);
2564 let display_end = range
2565 .end
2566 .to_display_point(&snapshot.display_snapshot);
2567 ColoredRange {
2568 start: display_start.row(),
2569 end: display_end.row(),
2570 color: theme.status().info,
2571 }
2572 });
2573 marker_quads.extend(
2574 scrollbar_layout
2575 .marker_quads_for_ranges(marker_row_ranges, 1),
2576 );
2577 }
2578 }
2579
2580 if scrollbar_settings.diagnostics {
2581 let max_point =
2582 snapshot.display_snapshot.buffer_snapshot.max_point();
2583
2584 let diagnostics = snapshot
2585 .buffer_snapshot
2586 .diagnostics_in_range::<_, Point>(
2587 Point::zero()..max_point,
2588 false,
2589 )
2590 // We want to sort by severity, in order to paint the most severe diagnostics last.
2591 .sorted_by_key(|diagnostic| {
2592 std::cmp::Reverse(diagnostic.diagnostic.severity)
2593 });
2594
2595 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
2596 let start_display = diagnostic
2597 .range
2598 .start
2599 .to_display_point(&snapshot.display_snapshot);
2600 let end_display = diagnostic
2601 .range
2602 .end
2603 .to_display_point(&snapshot.display_snapshot);
2604 let color = match diagnostic.diagnostic.severity {
2605 DiagnosticSeverity::ERROR => theme.status().error,
2606 DiagnosticSeverity::WARNING => theme.status().warning,
2607 DiagnosticSeverity::INFORMATION => theme.status().info,
2608 _ => theme.status().hint,
2609 };
2610 ColoredRange {
2611 start: start_display.row(),
2612 end: end_display.row(),
2613 color,
2614 }
2615 });
2616 marker_quads.extend(
2617 scrollbar_layout.marker_quads_for_ranges(marker_row_ranges, 2),
2618 );
2619 }
2620
2621 Arc::from(marker_quads)
2622 })
2623 .await;
2624
2625 editor.update(&mut cx, |editor, cx| {
2626 editor.scrollbar_marker_state.markers = scrollbar_markers;
2627 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
2628 editor.scrollbar_marker_state.pending_refresh = None;
2629 cx.notify();
2630 })?;
2631
2632 Ok(())
2633 }));
2634 });
2635 }
2636
2637 #[allow(clippy::too_many_arguments)]
2638 fn paint_highlighted_range(
2639 &self,
2640 range: Range<DisplayPoint>,
2641 color: Hsla,
2642 corner_radius: Pixels,
2643 line_end_overshoot: Pixels,
2644 layout: &EditorLayout,
2645 cx: &mut ElementContext,
2646 ) {
2647 let start_row = layout.visible_display_row_range.start;
2648 let end_row = layout.visible_display_row_range.end;
2649 if range.start != range.end {
2650 let row_range = if range.end.column() == 0 {
2651 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
2652 } else {
2653 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
2654 };
2655
2656 let highlighted_range = HighlightedRange {
2657 color,
2658 line_height: layout.position_map.line_height,
2659 corner_radius,
2660 start_y: layout.content_origin.y
2661 + row_range.start as f32 * layout.position_map.line_height
2662 - layout.position_map.scroll_pixel_position.y,
2663 lines: row_range
2664 .into_iter()
2665 .map(|row| {
2666 let line_layout =
2667 &layout.position_map.line_layouts[(row - start_row) as usize].line;
2668 HighlightedRangeLine {
2669 start_x: if row == range.start.row() {
2670 layout.content_origin.x
2671 + line_layout.x_for_index(range.start.column() as usize)
2672 - layout.position_map.scroll_pixel_position.x
2673 } else {
2674 layout.content_origin.x
2675 - layout.position_map.scroll_pixel_position.x
2676 },
2677 end_x: if row == range.end.row() {
2678 layout.content_origin.x
2679 + line_layout.x_for_index(range.end.column() as usize)
2680 - layout.position_map.scroll_pixel_position.x
2681 } else {
2682 layout.content_origin.x + line_layout.width + line_end_overshoot
2683 - layout.position_map.scroll_pixel_position.x
2684 },
2685 }
2686 })
2687 .collect(),
2688 };
2689
2690 highlighted_range.paint(layout.text_hitbox.bounds, cx);
2691 }
2692 }
2693
2694 fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2695 if layout.folds.is_empty() {
2696 return;
2697 }
2698
2699 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
2700 let fold_corner_radius = 0.15 * layout.position_map.line_height;
2701 for mut fold in mem::take(&mut layout.folds) {
2702 fold.hover_element.paint(cx);
2703
2704 let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
2705 let fold_background = if hover_element.interactivity().active.unwrap() {
2706 cx.theme().colors().ghost_element_active
2707 } else if hover_element.interactivity().hovered.unwrap() {
2708 cx.theme().colors().ghost_element_hover
2709 } else {
2710 cx.theme().colors().ghost_element_background
2711 };
2712
2713 self.paint_highlighted_range(
2714 fold.display_range.clone(),
2715 fold_background,
2716 fold_corner_radius,
2717 fold_corner_radius * 2.,
2718 layout,
2719 cx,
2720 );
2721 }
2722 })
2723 }
2724
2725 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2726 for mut block in layout.blocks.drain(..) {
2727 block.element.paint(cx);
2728 }
2729 }
2730
2731 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
2732 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
2733 mouse_context_menu.paint(cx);
2734 }
2735 }
2736
2737 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2738 cx.on_mouse_event({
2739 let position_map = layout.position_map.clone();
2740 let editor = self.editor.clone();
2741 let hitbox = layout.hitbox.clone();
2742 let mut delta = ScrollDelta::default();
2743
2744 move |event: &ScrollWheelEvent, phase, cx| {
2745 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
2746 delta = delta.coalesce(event.delta);
2747 editor.update(cx, |editor, cx| {
2748 let position_map: &PositionMap = &position_map;
2749
2750 let line_height = position_map.line_height;
2751 let max_glyph_width = position_map.em_width;
2752 let (delta, axis) = match delta {
2753 gpui::ScrollDelta::Pixels(mut pixels) => {
2754 //Trackpad
2755 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
2756 (pixels, axis)
2757 }
2758
2759 gpui::ScrollDelta::Lines(lines) => {
2760 //Not trackpad
2761 let pixels =
2762 point(lines.x * max_glyph_width, lines.y * line_height);
2763 (pixels, None)
2764 }
2765 };
2766
2767 let scroll_position = position_map.snapshot.scroll_position();
2768 let x = (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width;
2769 let y = (scroll_position.y * line_height - delta.y) / line_height;
2770 let scroll_position =
2771 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
2772 editor.scroll(scroll_position, axis, cx);
2773 cx.stop_propagation();
2774 });
2775 }
2776 }
2777 });
2778 }
2779
2780 fn paint_mouse_listeners(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
2781 self.paint_scroll_wheel_listener(layout, cx);
2782
2783 cx.on_mouse_event({
2784 let position_map = layout.position_map.clone();
2785 let editor = self.editor.clone();
2786 let text_hitbox = layout.text_hitbox.clone();
2787 let gutter_hitbox = layout.gutter_hitbox.clone();
2788
2789 move |event: &MouseDownEvent, phase, cx| {
2790 if phase == DispatchPhase::Bubble {
2791 match event.button {
2792 MouseButton::Left => editor.update(cx, |editor, cx| {
2793 Self::mouse_left_down(
2794 editor,
2795 event,
2796 &position_map,
2797 &text_hitbox,
2798 &gutter_hitbox,
2799 cx,
2800 );
2801 }),
2802 MouseButton::Right => editor.update(cx, |editor, cx| {
2803 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
2804 }),
2805 _ => {}
2806 };
2807 }
2808 }
2809 });
2810
2811 cx.on_mouse_event({
2812 let editor = self.editor.clone();
2813 let position_map = layout.position_map.clone();
2814 let text_hitbox = layout.text_hitbox.clone();
2815
2816 move |event: &MouseUpEvent, phase, cx| {
2817 if phase == DispatchPhase::Bubble {
2818 editor.update(cx, |editor, cx| {
2819 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
2820 });
2821 }
2822 }
2823 });
2824 cx.on_mouse_event({
2825 let position_map = layout.position_map.clone();
2826 let editor = self.editor.clone();
2827 let text_hitbox = layout.text_hitbox.clone();
2828 let gutter_hitbox = layout.gutter_hitbox.clone();
2829
2830 move |event: &MouseMoveEvent, phase, cx| {
2831 if phase == DispatchPhase::Bubble {
2832 editor.update(cx, |editor, cx| {
2833 if event.pressed_button == Some(MouseButton::Left) {
2834 Self::mouse_dragged(
2835 editor,
2836 event,
2837 &position_map,
2838 text_hitbox.bounds,
2839 cx,
2840 )
2841 }
2842
2843 Self::mouse_moved(
2844 editor,
2845 event,
2846 &position_map,
2847 &text_hitbox,
2848 &gutter_hitbox,
2849 cx,
2850 )
2851 });
2852 }
2853 }
2854 });
2855 }
2856
2857 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
2858 bounds.upper_right().x - self.style.scrollbar_width
2859 }
2860
2861 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
2862 let style = &self.style;
2863 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2864 let layout = cx
2865 .text_system()
2866 .shape_line(
2867 SharedString::from(" ".repeat(column)),
2868 font_size,
2869 &[TextRun {
2870 len: column,
2871 font: style.text.font(),
2872 color: Hsla::default(),
2873 background_color: None,
2874 underline: None,
2875 strikethrough: None,
2876 }],
2877 )
2878 .unwrap();
2879
2880 layout.width
2881 }
2882
2883 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
2884 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
2885 self.column_pixels(digit_count, cx)
2886 }
2887}
2888
2889fn render_blame_entry(
2890 ix: usize,
2891 blame: &gpui::Model<GitBlame>,
2892 blame_entry: BlameEntry,
2893 text_style: &TextStyle,
2894 last_used_color: &mut Option<(PlayerColor, Oid)>,
2895 editor: View<Editor>,
2896 cx: &mut ElementContext<'_>,
2897) -> AnyElement {
2898 let mut sha_color = cx
2899 .theme()
2900 .players()
2901 .color_for_participant(blame_entry.sha.into());
2902 // If the last color we used is the same as the one we get for this line, but
2903 // the commit SHAs are different, then we try again to get a different color.
2904 match *last_used_color {
2905 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
2906 let index: u32 = blame_entry.sha.into();
2907 sha_color = cx.theme().players().color_for_participant(index + 1);
2908 }
2909 _ => {}
2910 };
2911 last_used_color.replace((sha_color, blame_entry.sha));
2912
2913 let relative_timestamp = match blame_entry.author_offset_date_time() {
2914 Ok(timestamp) => time_format::format_localized_timestamp(
2915 timestamp,
2916 time::OffsetDateTime::now_utc(),
2917 cx.local_timezone(),
2918 time_format::TimestampFormat::Relative,
2919 ),
2920 Err(_) => "Error parsing date".to_string(),
2921 };
2922
2923 let pretty_commit_id = format!("{}", blame_entry.sha);
2924 let short_commit_id = pretty_commit_id.clone().chars().take(6).collect::<String>();
2925
2926 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
2927 let name = util::truncate_and_trailoff(author_name, 20);
2928
2929 let permalink = blame.read(cx).permalink_for_entry(&blame_entry);
2930 let commit_message = blame.read(cx).message_for_entry(&blame_entry);
2931
2932 h_flex()
2933 .w_full()
2934 .font(text_style.font().family)
2935 .line_height(text_style.line_height)
2936 .id(("blame", ix))
2937 .children([
2938 div()
2939 .text_color(sha_color.cursor)
2940 .child(short_commit_id)
2941 .mr_2(),
2942 div()
2943 .w_full()
2944 .h_flex()
2945 .justify_between()
2946 .text_color(cx.theme().status().hint)
2947 .child(name)
2948 .child(relative_timestamp),
2949 ])
2950 .on_mouse_down(MouseButton::Right, {
2951 let blame_entry = blame_entry.clone();
2952 move |event, cx| {
2953 deploy_blame_entry_context_menu(&blame_entry, editor.clone(), event.position, cx);
2954 }
2955 })
2956 .hover(|style| style.bg(cx.theme().colors().element_hover))
2957 .when_some(permalink, |this, url| {
2958 let url = url.clone();
2959 this.cursor_pointer().on_click(move |_, cx| {
2960 cx.stop_propagation();
2961 cx.open_url(url.as_str())
2962 })
2963 })
2964 .tooltip(move |cx| {
2965 BlameEntryTooltip::new(
2966 sha_color.cursor,
2967 commit_message.clone(),
2968 blame_entry.clone(),
2969 cx,
2970 )
2971 })
2972 .into_any()
2973}
2974
2975fn deploy_blame_entry_context_menu(
2976 blame_entry: &BlameEntry,
2977 editor: View<Editor>,
2978 position: gpui::Point<Pixels>,
2979 cx: &mut WindowContext<'_>,
2980) {
2981 let context_menu = ContextMenu::build(cx, move |this, _| {
2982 let sha = format!("{}", blame_entry.sha);
2983 this.entry("Copy commit SHA", None, move |cx| {
2984 cx.write_to_clipboard(ClipboardItem::new(sha.clone()));
2985 })
2986 });
2987
2988 editor.update(cx, move |editor, cx| {
2989 editor.mouse_context_menu = Some(MouseContextMenu::new(position, context_menu, cx));
2990 cx.notify();
2991 });
2992}
2993
2994struct BlameEntryTooltip {
2995 color: Hsla,
2996 commit_message: Option<String>,
2997 blame_entry: BlameEntry,
2998}
2999
3000impl BlameEntryTooltip {
3001 fn new(
3002 color: Hsla,
3003 commit_message: Option<String>,
3004 blame_entry: BlameEntry,
3005 cx: &mut WindowContext,
3006 ) -> AnyView {
3007 cx.new_view(|_cx| Self {
3008 color,
3009 commit_message,
3010 blame_entry,
3011 })
3012 .into()
3013 }
3014}
3015
3016impl Render for BlameEntryTooltip {
3017 fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
3018 let author = self
3019 .blame_entry
3020 .author
3021 .clone()
3022 .unwrap_or("<no name>".to_string());
3023 let author_email = self.blame_entry.author_mail.clone().unwrap_or_default();
3024 let absolute_timestamp = match self.blame_entry.author_offset_date_time() {
3025 Ok(timestamp) => time_format::format_localized_timestamp(
3026 timestamp,
3027 time::OffsetDateTime::now_utc(),
3028 cx.local_timezone(),
3029 time_format::TimestampFormat::Absolute,
3030 ),
3031 Err(_) => "Error parsing date".to_string(),
3032 };
3033
3034 let message = match &self.commit_message {
3035 Some(message) => util::truncate_lines_and_trailoff(message, 15),
3036 None => self.blame_entry.summary.clone().unwrap_or_default(),
3037 };
3038
3039 let pretty_commit_id = format!("{}", self.blame_entry.sha);
3040
3041 tooltip_container(cx, move |this, cx| {
3042 this.occlude()
3043 .on_mouse_move(|_, cx| cx.stop_propagation())
3044 .child(
3045 v_flex()
3046 .child(
3047 h_flex()
3048 .child(
3049 div()
3050 .text_color(cx.theme().colors().text_muted)
3051 .child("Commit")
3052 .pr_2(),
3053 )
3054 .child(
3055 div().text_color(self.color).child(pretty_commit_id.clone()),
3056 ),
3057 )
3058 .child(
3059 div()
3060 .child(format!(
3061 "{} {} - {}",
3062 author, author_email, absolute_timestamp
3063 ))
3064 .text_color(cx.theme().colors().text_muted),
3065 )
3066 .child(div().child(message)),
3067 )
3068 })
3069 }
3070}
3071
3072#[derive(Debug)]
3073pub(crate) struct LineWithInvisibles {
3074 pub line: ShapedLine,
3075 invisibles: Vec<Invisible>,
3076}
3077
3078impl LineWithInvisibles {
3079 fn from_chunks<'a>(
3080 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
3081 text_style: &TextStyle,
3082 max_line_len: usize,
3083 max_line_count: usize,
3084 line_number_layouts: &[Option<ShapedLine>],
3085 editor_mode: EditorMode,
3086 cx: &WindowContext,
3087 ) -> Vec<Self> {
3088 let mut layouts = Vec::with_capacity(max_line_count);
3089 let mut line = String::new();
3090 let mut invisibles = Vec::new();
3091 let mut styles = Vec::new();
3092 let mut non_whitespace_added = false;
3093 let mut row = 0;
3094 let mut line_exceeded_max_len = false;
3095 let font_size = text_style.font_size.to_pixels(cx.rem_size());
3096
3097 for highlighted_chunk in chunks.chain([HighlightedChunk {
3098 chunk: "\n",
3099 style: None,
3100 is_tab: false,
3101 }]) {
3102 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
3103 if ix > 0 {
3104 let shaped_line = cx
3105 .text_system()
3106 .shape_line(line.clone().into(), font_size, &styles)
3107 .unwrap();
3108 layouts.push(Self {
3109 line: shaped_line,
3110 invisibles: std::mem::take(&mut invisibles),
3111 });
3112
3113 line.clear();
3114 styles.clear();
3115 row += 1;
3116 line_exceeded_max_len = false;
3117 non_whitespace_added = false;
3118 if row == max_line_count {
3119 return layouts;
3120 }
3121 }
3122
3123 if !line_chunk.is_empty() && !line_exceeded_max_len {
3124 let text_style = if let Some(style) = highlighted_chunk.style {
3125 Cow::Owned(text_style.clone().highlight(style))
3126 } else {
3127 Cow::Borrowed(text_style)
3128 };
3129
3130 if line.len() + line_chunk.len() > max_line_len {
3131 let mut chunk_len = max_line_len - line.len();
3132 while !line_chunk.is_char_boundary(chunk_len) {
3133 chunk_len -= 1;
3134 }
3135 line_chunk = &line_chunk[..chunk_len];
3136 line_exceeded_max_len = true;
3137 }
3138
3139 styles.push(TextRun {
3140 len: line_chunk.len(),
3141 font: text_style.font(),
3142 color: text_style.color,
3143 background_color: text_style.background_color,
3144 underline: text_style.underline,
3145 strikethrough: text_style.strikethrough,
3146 });
3147
3148 if editor_mode == EditorMode::Full {
3149 // Line wrap pads its contents with fake whitespaces,
3150 // avoid printing them
3151 let inside_wrapped_string = line_number_layouts
3152 .get(row)
3153 .and_then(|layout| layout.as_ref())
3154 .is_none();
3155 if highlighted_chunk.is_tab {
3156 if non_whitespace_added || !inside_wrapped_string {
3157 invisibles.push(Invisible::Tab {
3158 line_start_offset: line.len(),
3159 });
3160 }
3161 } else {
3162 invisibles.extend(
3163 line_chunk
3164 .chars()
3165 .enumerate()
3166 .filter(|(_, line_char)| {
3167 let is_whitespace = line_char.is_whitespace();
3168 non_whitespace_added |= !is_whitespace;
3169 is_whitespace
3170 && (non_whitespace_added || !inside_wrapped_string)
3171 })
3172 .map(|(whitespace_index, _)| Invisible::Whitespace {
3173 line_offset: line.len() + whitespace_index,
3174 }),
3175 )
3176 }
3177 }
3178
3179 line.push_str(line_chunk);
3180 }
3181 }
3182 }
3183
3184 layouts
3185 }
3186
3187 fn draw(
3188 &self,
3189 layout: &EditorLayout,
3190 row: u32,
3191 content_origin: gpui::Point<Pixels>,
3192 whitespace_setting: ShowWhitespaceSetting,
3193 selection_ranges: &[Range<DisplayPoint>],
3194 cx: &mut ElementContext,
3195 ) {
3196 let line_height = layout.position_map.line_height;
3197 let line_y =
3198 line_height * (row as f32 - layout.position_map.scroll_pixel_position.y / line_height);
3199
3200 self.line
3201 .paint(
3202 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y),
3203 line_height,
3204 cx,
3205 )
3206 .log_err();
3207
3208 self.draw_invisibles(
3209 &selection_ranges,
3210 layout,
3211 content_origin,
3212 line_y,
3213 row,
3214 line_height,
3215 whitespace_setting,
3216 cx,
3217 );
3218 }
3219
3220 #[allow(clippy::too_many_arguments)]
3221 fn draw_invisibles(
3222 &self,
3223 selection_ranges: &[Range<DisplayPoint>],
3224 layout: &EditorLayout,
3225 content_origin: gpui::Point<Pixels>,
3226 line_y: Pixels,
3227 row: u32,
3228 line_height: Pixels,
3229 whitespace_setting: ShowWhitespaceSetting,
3230 cx: &mut ElementContext,
3231 ) {
3232 let allowed_invisibles_regions = match whitespace_setting {
3233 ShowWhitespaceSetting::None => return,
3234 ShowWhitespaceSetting::Selection => Some(selection_ranges),
3235 ShowWhitespaceSetting::All => None,
3236 };
3237
3238 for invisible in &self.invisibles {
3239 let (&token_offset, invisible_symbol) = match invisible {
3240 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
3241 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
3242 };
3243
3244 let x_offset = self.line.x_for_index(token_offset);
3245 let invisible_offset =
3246 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
3247 let origin = content_origin
3248 + gpui::point(
3249 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
3250 line_y,
3251 );
3252
3253 if let Some(allowed_regions) = allowed_invisibles_regions {
3254 let invisible_point = DisplayPoint::new(row, token_offset as u32);
3255 if !allowed_regions
3256 .iter()
3257 .any(|region| region.start <= invisible_point && invisible_point < region.end)
3258 {
3259 continue;
3260 }
3261 }
3262 invisible_symbol.paint(origin, line_height, cx).log_err();
3263 }
3264 }
3265}
3266
3267#[derive(Debug, Clone, Copy, PartialEq, Eq)]
3268enum Invisible {
3269 Tab { line_start_offset: usize },
3270 Whitespace { line_offset: usize },
3271}
3272
3273impl Element for EditorElement {
3274 type BeforeLayout = ();
3275 type AfterLayout = EditorLayout;
3276
3277 fn before_layout(&mut self, cx: &mut ElementContext) -> (gpui::LayoutId, ()) {
3278 self.editor.update(cx, |editor, cx| {
3279 editor.set_style(self.style.clone(), cx);
3280
3281 let layout_id = match editor.mode {
3282 EditorMode::SingleLine => {
3283 let rem_size = cx.rem_size();
3284 let mut style = Style::default();
3285 style.size.width = relative(1.).into();
3286 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
3287 cx.with_element_context(|cx| cx.request_layout(&style, None))
3288 }
3289 EditorMode::AutoHeight { max_lines } => {
3290 let editor_handle = cx.view().clone();
3291 let max_line_number_width =
3292 self.max_line_number_width(&editor.snapshot(cx), cx);
3293 cx.with_element_context(|cx| {
3294 cx.request_measured_layout(
3295 Style::default(),
3296 move |known_dimensions, _, cx| {
3297 editor_handle
3298 .update(cx, |editor, cx| {
3299 compute_auto_height_layout(
3300 editor,
3301 max_lines,
3302 max_line_number_width,
3303 known_dimensions,
3304 cx,
3305 )
3306 })
3307 .unwrap_or_default()
3308 },
3309 )
3310 })
3311 }
3312 EditorMode::Full => {
3313 let mut style = Style::default();
3314 style.size.width = relative(1.).into();
3315 style.size.height = relative(1.).into();
3316 cx.with_element_context(|cx| cx.request_layout(&style, None))
3317 }
3318 };
3319
3320 (layout_id, ())
3321 })
3322 }
3323
3324 fn after_layout(
3325 &mut self,
3326 bounds: Bounds<Pixels>,
3327 _: &mut Self::BeforeLayout,
3328 cx: &mut ElementContext,
3329 ) -> Self::AfterLayout {
3330 let text_style = TextStyleRefinement {
3331 font_size: Some(self.style.text.font_size),
3332 line_height: Some(self.style.text.line_height),
3333 ..Default::default()
3334 };
3335 cx.with_text_style(Some(text_style), |cx| {
3336 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3337 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
3338 let style = self.style.clone();
3339
3340 let font_id = cx.text_system().resolve_font(&style.text.font());
3341 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3342 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3343 let em_width = cx
3344 .text_system()
3345 .typographic_bounds(font_id, font_size, 'm')
3346 .unwrap()
3347 .size
3348 .width;
3349 let em_advance = cx
3350 .text_system()
3351 .advance(font_id, font_size, 'm')
3352 .unwrap()
3353 .width;
3354
3355 let gutter_dimensions = snapshot.gutter_dimensions(
3356 font_id,
3357 font_size,
3358 em_width,
3359 self.max_line_number_width(&snapshot, cx),
3360 cx,
3361 );
3362 let text_width = bounds.size.width - gutter_dimensions.width;
3363 let overscroll = size(em_width, px(0.));
3364
3365 snapshot = self.editor.update(cx, |editor, cx| {
3366 editor.gutter_width = gutter_dimensions.width;
3367 editor.set_visible_line_count(bounds.size.height / line_height, cx);
3368
3369 let editor_width =
3370 text_width - gutter_dimensions.margin - overscroll.width - em_width;
3371 let wrap_width = match editor.soft_wrap_mode(cx) {
3372 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
3373 SoftWrap::EditorWidth => editor_width,
3374 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
3375 };
3376
3377 if editor.set_wrap_width(Some(wrap_width), cx) {
3378 editor.snapshot(cx)
3379 } else {
3380 snapshot
3381 }
3382 });
3383
3384 let wrap_guides = self
3385 .editor
3386 .read(cx)
3387 .wrap_guides(cx)
3388 .iter()
3389 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
3390 .collect::<SmallVec<[_; 2]>>();
3391
3392 let hitbox = cx.insert_hitbox(bounds, false);
3393 let gutter_hitbox = cx.insert_hitbox(
3394 Bounds {
3395 origin: bounds.origin,
3396 size: size(gutter_dimensions.width, bounds.size.height),
3397 },
3398 false,
3399 );
3400 let text_hitbox = cx.insert_hitbox(
3401 Bounds {
3402 origin: gutter_hitbox.upper_right(),
3403 size: size(text_width, bounds.size.height),
3404 },
3405 false,
3406 );
3407 // Offset the content_bounds from the text_bounds by the gutter margin (which
3408 // is roughly half a character wide) to make hit testing work more like how we want.
3409 let content_origin =
3410 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
3411
3412 let autoscroll_horizontally = self.editor.update(cx, |editor, cx| {
3413 let autoscroll_horizontally =
3414 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
3415 snapshot = editor.snapshot(cx);
3416 autoscroll_horizontally
3417 });
3418
3419 let mut scroll_position = snapshot.scroll_position();
3420 // The scroll position is a fractional point, the whole number of which represents
3421 // the top of the window in terms of display rows.
3422 let start_row = scroll_position.y as u32;
3423 let height_in_lines = bounds.size.height / line_height;
3424 let max_row = snapshot.max_point().row();
3425
3426 // Add 1 to ensure selections bleed off screen
3427 let end_row =
3428 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
3429
3430 let buffer_rows = snapshot
3431 .buffer_rows(start_row)
3432 .take((start_row..end_row).len());
3433
3434 let start_anchor = if start_row == 0 {
3435 Anchor::min()
3436 } else {
3437 snapshot.buffer_snapshot.anchor_before(
3438 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
3439 )
3440 };
3441 let end_anchor = if end_row > max_row {
3442 Anchor::max()
3443 } else {
3444 snapshot.buffer_snapshot.anchor_before(
3445 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
3446 )
3447 };
3448
3449 let highlighted_rows = self
3450 .editor
3451 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
3452 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
3453 start_anchor..end_anchor,
3454 &snapshot.display_snapshot,
3455 cx.theme().colors(),
3456 );
3457
3458 let redacted_ranges = self.editor.read(cx).redacted_ranges(
3459 start_anchor..end_anchor,
3460 &snapshot.display_snapshot,
3461 cx,
3462 );
3463
3464 let (selections, active_rows, newest_selection_head) = self.layout_selections(
3465 start_anchor,
3466 end_anchor,
3467 &snapshot,
3468 start_row,
3469 end_row,
3470 cx,
3471 );
3472
3473 let (line_numbers, fold_statuses) = self.layout_line_numbers(
3474 start_row..end_row,
3475 buffer_rows.clone(),
3476 &active_rows,
3477 newest_selection_head,
3478 &snapshot,
3479 cx,
3480 );
3481
3482 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
3483
3484 let blamed_display_rows = self.layout_blame_entries(
3485 buffer_rows,
3486 em_width,
3487 scroll_position,
3488 line_height,
3489 &gutter_hitbox,
3490 gutter_dimensions.git_blame_entries_width,
3491 cx,
3492 );
3493
3494 let mut max_visible_line_width = Pixels::ZERO;
3495 let line_layouts =
3496 self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
3497 for line_with_invisibles in &line_layouts {
3498 if line_with_invisibles.line.width > max_visible_line_width {
3499 max_visible_line_width = line_with_invisibles.line.width;
3500 }
3501 }
3502
3503 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
3504 .unwrap()
3505 .width;
3506 let mut scroll_width =
3507 longest_line_width.max(max_visible_line_width) + overscroll.width;
3508 let mut blocks = self.build_blocks(
3509 start_row..end_row,
3510 &snapshot,
3511 &hitbox,
3512 &text_hitbox,
3513 &mut scroll_width,
3514 &gutter_dimensions,
3515 em_width,
3516 gutter_dimensions.width + gutter_dimensions.margin,
3517 line_height,
3518 &line_layouts,
3519 cx,
3520 );
3521
3522 let scroll_max = point(
3523 ((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
3524 max_row as f32,
3525 );
3526
3527 self.editor.update(cx, |editor, cx| {
3528 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3529
3530 let autoscrolled = if autoscroll_horizontally {
3531 editor.autoscroll_horizontally(
3532 start_row,
3533 text_hitbox.size.width,
3534 scroll_width,
3535 em_width,
3536 &line_layouts,
3537 cx,
3538 )
3539 } else {
3540 false
3541 };
3542
3543 if clamped || autoscrolled {
3544 snapshot = editor.snapshot(cx);
3545 scroll_position = snapshot.scroll_position();
3546 }
3547 });
3548
3549 let scroll_pixel_position = point(
3550 scroll_position.x * em_width,
3551 scroll_position.y * line_height,
3552 );
3553
3554 cx.with_element_id(Some("blocks"), |cx| {
3555 self.layout_blocks(
3556 &mut blocks,
3557 &hitbox,
3558 line_height,
3559 scroll_pixel_position,
3560 cx,
3561 );
3562 });
3563
3564 let cursors = self.layout_cursors(
3565 &snapshot,
3566 &selections,
3567 start_row..end_row,
3568 &line_layouts,
3569 &text_hitbox,
3570 content_origin,
3571 scroll_pixel_position,
3572 line_height,
3573 em_width,
3574 cx,
3575 );
3576
3577 let scrollbar_layout = self.layout_scrollbar(
3578 &snapshot,
3579 bounds,
3580 scroll_position,
3581 line_height,
3582 height_in_lines,
3583 cx,
3584 );
3585
3586 let folds = cx.with_element_id(Some("folds"), |cx| {
3587 self.layout_folds(
3588 &snapshot,
3589 content_origin,
3590 start_anchor..end_anchor,
3591 start_row..end_row,
3592 scroll_pixel_position,
3593 line_height,
3594 &line_layouts,
3595 cx,
3596 )
3597 });
3598
3599 let gutter_settings = EditorSettings::get_global(cx).gutter;
3600
3601 let mut context_menu_visible = false;
3602 let mut code_actions_indicator = None;
3603 if let Some(newest_selection_head) = newest_selection_head {
3604 if (start_row..end_row).contains(&newest_selection_head.row()) {
3605 context_menu_visible = self.layout_context_menu(
3606 line_height,
3607 &hitbox,
3608 &text_hitbox,
3609 content_origin,
3610 start_row,
3611 scroll_pixel_position,
3612 &line_layouts,
3613 newest_selection_head,
3614 cx,
3615 );
3616 if gutter_settings.code_actions {
3617 code_actions_indicator = self.layout_code_actions_indicator(
3618 line_height,
3619 newest_selection_head,
3620 scroll_pixel_position,
3621 &gutter_dimensions,
3622 &gutter_hitbox,
3623 cx,
3624 );
3625 }
3626 }
3627 }
3628
3629 if !context_menu_visible && !cx.has_active_drag() {
3630 self.layout_hover_popovers(
3631 &snapshot,
3632 &hitbox,
3633 &text_hitbox,
3634 start_row..end_row,
3635 content_origin,
3636 scroll_pixel_position,
3637 &line_layouts,
3638 line_height,
3639 em_width,
3640 cx,
3641 );
3642 }
3643
3644 let mouse_context_menu = self.layout_mouse_context_menu(cx);
3645
3646 let fold_indicators = if gutter_settings.folds {
3647 cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
3648 self.layout_gutter_fold_indicators(
3649 fold_statuses,
3650 line_height,
3651 &gutter_dimensions,
3652 gutter_settings,
3653 scroll_pixel_position,
3654 &gutter_hitbox,
3655 cx,
3656 )
3657 })
3658 } else {
3659 Vec::new()
3660 };
3661
3662 let invisible_symbol_font_size = font_size / 2.;
3663 let tab_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 let space_invisible = cx
3679 .text_system()
3680 .shape_line(
3681 "•".into(),
3682 invisible_symbol_font_size,
3683 &[TextRun {
3684 len: "•".len(),
3685 font: self.style.text.font(),
3686 color: cx.theme().colors().editor_invisible,
3687 background_color: None,
3688 underline: None,
3689 strikethrough: None,
3690 }],
3691 )
3692 .unwrap();
3693
3694 EditorLayout {
3695 mode: snapshot.mode,
3696 position_map: Arc::new(PositionMap {
3697 size: bounds.size,
3698 scroll_pixel_position,
3699 scroll_max,
3700 line_layouts,
3701 line_height,
3702 em_width,
3703 em_advance,
3704 snapshot,
3705 }),
3706 visible_display_row_range: start_row..end_row,
3707 wrap_guides,
3708 hitbox,
3709 text_hitbox,
3710 gutter_hitbox,
3711 gutter_dimensions,
3712 content_origin,
3713 scrollbar_layout,
3714 max_row,
3715 active_rows,
3716 highlighted_rows,
3717 highlighted_ranges,
3718 redacted_ranges,
3719 line_numbers,
3720 display_hunks,
3721 blamed_display_rows,
3722 folds,
3723 blocks,
3724 cursors,
3725 selections,
3726 mouse_context_menu,
3727 code_actions_indicator,
3728 fold_indicators,
3729 tab_invisible,
3730 space_invisible,
3731 }
3732 })
3733 })
3734 }
3735
3736 fn paint(
3737 &mut self,
3738 bounds: Bounds<gpui::Pixels>,
3739 _: &mut Self::BeforeLayout,
3740 layout: &mut Self::AfterLayout,
3741 cx: &mut ElementContext,
3742 ) {
3743 let focus_handle = self.editor.focus_handle(cx);
3744 let key_context = self.editor.read(cx).key_context(cx);
3745 cx.set_focus_handle(&focus_handle);
3746 cx.set_key_context(key_context);
3747 cx.set_view_id(self.editor.entity_id());
3748 cx.handle_input(
3749 &focus_handle,
3750 ElementInputHandler::new(bounds, self.editor.clone()),
3751 );
3752 self.register_actions(cx);
3753 self.register_key_listeners(cx, layout);
3754
3755 let text_style = TextStyleRefinement {
3756 font_size: Some(self.style.text.font_size),
3757 line_height: Some(self.style.text.line_height),
3758 ..Default::default()
3759 };
3760 cx.with_text_style(Some(text_style), |cx| {
3761 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
3762 self.paint_mouse_listeners(layout, cx);
3763
3764 self.paint_background(layout, cx);
3765 if layout.gutter_hitbox.size.width > Pixels::ZERO {
3766 self.paint_gutter(layout, cx);
3767 }
3768 self.paint_text(layout, cx);
3769
3770 if !layout.blocks.is_empty() {
3771 cx.with_element_id(Some("blocks"), |cx| {
3772 self.paint_blocks(layout, cx);
3773 });
3774 }
3775
3776 self.paint_scrollbar(layout, cx);
3777 self.paint_mouse_context_menu(layout, cx);
3778 });
3779 })
3780 }
3781}
3782
3783impl IntoElement for EditorElement {
3784 type Element = Self;
3785
3786 fn into_element(self) -> Self::Element {
3787 self
3788 }
3789}
3790
3791type BufferRow = u32;
3792
3793pub struct EditorLayout {
3794 position_map: Arc<PositionMap>,
3795 hitbox: Hitbox,
3796 text_hitbox: Hitbox,
3797 gutter_hitbox: Hitbox,
3798 gutter_dimensions: GutterDimensions,
3799 content_origin: gpui::Point<Pixels>,
3800 scrollbar_layout: Option<ScrollbarLayout>,
3801 mode: EditorMode,
3802 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3803 visible_display_row_range: Range<u32>,
3804 active_rows: BTreeMap<u32, bool>,
3805 highlighted_rows: BTreeMap<u32, Hsla>,
3806 line_numbers: Vec<Option<ShapedLine>>,
3807 display_hunks: Vec<DisplayDiffHunk>,
3808 blamed_display_rows: Option<Vec<AnyElement>>,
3809 folds: Vec<FoldLayout>,
3810 blocks: Vec<BlockLayout>,
3811 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3812 redacted_ranges: Vec<Range<DisplayPoint>>,
3813 cursors: Vec<CursorLayout>,
3814 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3815 max_row: u32,
3816 code_actions_indicator: Option<AnyElement>,
3817 fold_indicators: Vec<Option<AnyElement>>,
3818 mouse_context_menu: Option<AnyElement>,
3819 tab_invisible: ShapedLine,
3820 space_invisible: ShapedLine,
3821}
3822
3823impl EditorLayout {
3824 fn line_end_overshoot(&self) -> Pixels {
3825 0.15 * self.position_map.line_height
3826 }
3827}
3828
3829struct ColoredRange<T> {
3830 start: T,
3831 end: T,
3832 color: Hsla,
3833}
3834
3835#[derive(Clone)]
3836struct ScrollbarLayout {
3837 hitbox: Hitbox,
3838 visible_row_range: Range<f32>,
3839 visible: bool,
3840 height: Pixels,
3841 scroll_height: f32,
3842 first_row_y_offset: Pixels,
3843 row_height: Pixels,
3844}
3845
3846impl ScrollbarLayout {
3847 const BORDER_WIDTH: Pixels = px(1.0);
3848 const MIN_MARKER_HEIGHT: Pixels = px(2.0);
3849
3850 fn thumb_bounds(&self) -> Bounds<Pixels> {
3851 let thumb_top = self.y_for_row(self.visible_row_range.start) - self.first_row_y_offset;
3852 let thumb_bottom = self.y_for_row(self.visible_row_range.end) + self.first_row_y_offset;
3853 Bounds::from_corners(
3854 point(self.hitbox.left(), thumb_top),
3855 point(self.hitbox.right(), thumb_bottom),
3856 )
3857 }
3858
3859 fn y_for_row(&self, row: f32) -> Pixels {
3860 self.hitbox.top() + self.first_row_y_offset + row * self.row_height
3861 }
3862
3863 fn marker_quads_for_ranges(
3864 &self,
3865 row_ranges: impl IntoIterator<Item = ColoredRange<u32>>,
3866 column: usize,
3867 ) -> Vec<PaintQuad> {
3868 let column_width =
3869 px(((self.hitbox.size.width - ScrollbarLayout::BORDER_WIDTH).0 / 3.0).floor());
3870
3871 let left_x = ScrollbarLayout::BORDER_WIDTH + (column as f32 * column_width);
3872 let right_x = left_x + column_width;
3873
3874 let mut background_pixel_ranges = row_ranges
3875 .into_iter()
3876 .map(|range| {
3877 let start_y = self.first_row_y_offset + range.start as f32 * self.row_height;
3878 let mut end_y = self.first_row_y_offset + (range.end + 1) as f32 * self.row_height;
3879 if end_y - start_y < Self::MIN_MARKER_HEIGHT {
3880 end_y = start_y + Self::MIN_MARKER_HEIGHT;
3881 }
3882 ColoredRange {
3883 start: start_y,
3884 end: end_y,
3885 color: range.color,
3886 }
3887 })
3888 .peekable();
3889
3890 let mut quads = Vec::new();
3891 while let Some(mut pixel_range) = background_pixel_ranges.next() {
3892 while let Some(next_pixel_range) = background_pixel_ranges.peek() {
3893 if pixel_range.end >= next_pixel_range.start
3894 && pixel_range.color == next_pixel_range.color
3895 {
3896 pixel_range.end = next_pixel_range.end;
3897 background_pixel_ranges.next();
3898 } else {
3899 break;
3900 }
3901 }
3902
3903 let bounds = Bounds::from_corners(
3904 point(left_x, pixel_range.start),
3905 point(right_x, pixel_range.end),
3906 );
3907 quads.push(quad(
3908 bounds,
3909 Corners::default(),
3910 pixel_range.color,
3911 Edges::default(),
3912 Hsla::transparent_black(),
3913 ));
3914 }
3915
3916 quads
3917 }
3918}
3919
3920struct FoldLayout {
3921 display_range: Range<DisplayPoint>,
3922 hover_element: AnyElement,
3923}
3924
3925struct PositionMap {
3926 size: Size<Pixels>,
3927 line_height: Pixels,
3928 scroll_pixel_position: gpui::Point<Pixels>,
3929 scroll_max: gpui::Point<f32>,
3930 em_width: Pixels,
3931 em_advance: Pixels,
3932 line_layouts: Vec<LineWithInvisibles>,
3933 snapshot: EditorSnapshot,
3934}
3935
3936#[derive(Debug, Copy, Clone)]
3937pub struct PointForPosition {
3938 pub previous_valid: DisplayPoint,
3939 pub next_valid: DisplayPoint,
3940 pub exact_unclipped: DisplayPoint,
3941 pub column_overshoot_after_line_end: u32,
3942}
3943
3944impl PointForPosition {
3945 pub fn as_valid(&self) -> Option<DisplayPoint> {
3946 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3947 Some(self.previous_valid)
3948 } else {
3949 None
3950 }
3951 }
3952}
3953
3954impl PositionMap {
3955 fn point_for_position(
3956 &self,
3957 text_bounds: Bounds<Pixels>,
3958 position: gpui::Point<Pixels>,
3959 ) -> PointForPosition {
3960 let scroll_position = self.snapshot.scroll_position();
3961 let position = position - text_bounds.origin;
3962 let y = position.y.max(px(0.)).min(self.size.height);
3963 let x = position.x + (scroll_position.x * self.em_width);
3964 let row = ((y / self.line_height) + scroll_position.y) as u32;
3965
3966 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3967 .line_layouts
3968 .get(row as usize - scroll_position.y as usize)
3969 .map(|LineWithInvisibles { line, .. }| line)
3970 {
3971 if let Some(ix) = line.index_for_x(x) {
3972 (ix as u32, px(0.))
3973 } else {
3974 (line.len as u32, px(0.).max(x - line.width))
3975 }
3976 } else {
3977 (0, x)
3978 };
3979
3980 let mut exact_unclipped = DisplayPoint::new(row, column);
3981 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3982 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3983
3984 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3985 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3986 PointForPosition {
3987 previous_valid,
3988 next_valid,
3989 exact_unclipped,
3990 column_overshoot_after_line_end,
3991 }
3992 }
3993}
3994
3995struct BlockLayout {
3996 row: u32,
3997 element: AnyElement,
3998 available_space: Size<AvailableSpace>,
3999 style: BlockStyle,
4000}
4001
4002fn layout_line(
4003 row: u32,
4004 snapshot: &EditorSnapshot,
4005 style: &EditorStyle,
4006 cx: &WindowContext,
4007) -> Result<ShapedLine> {
4008 let mut line = snapshot.line(row);
4009
4010 if line.len() > MAX_LINE_LEN {
4011 let mut len = MAX_LINE_LEN;
4012 while !line.is_char_boundary(len) {
4013 len -= 1;
4014 }
4015
4016 line.truncate(len);
4017 }
4018
4019 cx.text_system().shape_line(
4020 line.into(),
4021 style.text.font_size.to_pixels(cx.rem_size()),
4022 &[TextRun {
4023 len: snapshot.line_len(row) as usize,
4024 font: style.text.font(),
4025 color: Hsla::default(),
4026 background_color: None,
4027 underline: None,
4028 strikethrough: None,
4029 }],
4030 )
4031}
4032
4033pub struct CursorLayout {
4034 origin: gpui::Point<Pixels>,
4035 block_width: Pixels,
4036 line_height: Pixels,
4037 color: Hsla,
4038 shape: CursorShape,
4039 block_text: Option<ShapedLine>,
4040 cursor_name: Option<AnyElement>,
4041}
4042
4043#[derive(Debug)]
4044pub struct CursorName {
4045 string: SharedString,
4046 color: Hsla,
4047 is_top_row: bool,
4048}
4049
4050impl CursorLayout {
4051 pub fn new(
4052 origin: gpui::Point<Pixels>,
4053 block_width: Pixels,
4054 line_height: Pixels,
4055 color: Hsla,
4056 shape: CursorShape,
4057 block_text: Option<ShapedLine>,
4058 ) -> CursorLayout {
4059 CursorLayout {
4060 origin,
4061 block_width,
4062 line_height,
4063 color,
4064 shape,
4065 block_text,
4066 cursor_name: None,
4067 }
4068 }
4069
4070 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
4071 Bounds {
4072 origin: self.origin + origin,
4073 size: size(self.block_width, self.line_height),
4074 }
4075 }
4076
4077 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
4078 match self.shape {
4079 CursorShape::Bar => Bounds {
4080 origin: self.origin + origin,
4081 size: size(px(2.0), self.line_height),
4082 },
4083 CursorShape::Block | CursorShape::Hollow => Bounds {
4084 origin: self.origin + origin,
4085 size: size(self.block_width, self.line_height),
4086 },
4087 CursorShape::Underscore => Bounds {
4088 origin: self.origin
4089 + origin
4090 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
4091 size: size(self.block_width, px(2.0)),
4092 },
4093 }
4094 }
4095
4096 pub fn layout(
4097 &mut self,
4098 origin: gpui::Point<Pixels>,
4099 cursor_name: Option<CursorName>,
4100 cx: &mut ElementContext,
4101 ) {
4102 if let Some(cursor_name) = cursor_name {
4103 let bounds = self.bounds(origin);
4104 let text_size = self.line_height / 1.5;
4105
4106 let name_origin = if cursor_name.is_top_row {
4107 point(bounds.right() - px(1.), bounds.top())
4108 } else {
4109 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
4110 };
4111 let mut name_element = div()
4112 .bg(self.color)
4113 .text_size(text_size)
4114 .px_0p5()
4115 .line_height(text_size + px(2.))
4116 .text_color(cursor_name.color)
4117 .child(cursor_name.string.clone())
4118 .into_any_element();
4119
4120 name_element.layout(
4121 name_origin,
4122 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
4123 cx,
4124 );
4125
4126 self.cursor_name = Some(name_element);
4127 }
4128 }
4129
4130 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
4131 let bounds = self.bounds(origin);
4132
4133 //Draw background or border quad
4134 let cursor = if matches!(self.shape, CursorShape::Hollow) {
4135 outline(bounds, self.color)
4136 } else {
4137 fill(bounds, self.color)
4138 };
4139
4140 if let Some(name) = &mut self.cursor_name {
4141 name.paint(cx);
4142 }
4143
4144 cx.paint_quad(cursor);
4145
4146 if let Some(block_text) = &self.block_text {
4147 block_text
4148 .paint(self.origin + origin, self.line_height, cx)
4149 .log_err();
4150 }
4151 }
4152
4153 pub fn shape(&self) -> CursorShape {
4154 self.shape
4155 }
4156}
4157
4158#[derive(Debug)]
4159pub struct HighlightedRange {
4160 pub start_y: Pixels,
4161 pub line_height: Pixels,
4162 pub lines: Vec<HighlightedRangeLine>,
4163 pub color: Hsla,
4164 pub corner_radius: Pixels,
4165}
4166
4167#[derive(Debug)]
4168pub struct HighlightedRangeLine {
4169 pub start_x: Pixels,
4170 pub end_x: Pixels,
4171}
4172
4173impl HighlightedRange {
4174 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
4175 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
4176 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
4177 self.paint_lines(
4178 self.start_y + self.line_height,
4179 &self.lines[1..],
4180 bounds,
4181 cx,
4182 );
4183 } else {
4184 self.paint_lines(self.start_y, &self.lines, bounds, cx);
4185 }
4186 }
4187
4188 fn paint_lines(
4189 &self,
4190 start_y: Pixels,
4191 lines: &[HighlightedRangeLine],
4192 _bounds: Bounds<Pixels>,
4193 cx: &mut ElementContext,
4194 ) {
4195 if lines.is_empty() {
4196 return;
4197 }
4198
4199 let first_line = lines.first().unwrap();
4200 let last_line = lines.last().unwrap();
4201
4202 let first_top_left = point(first_line.start_x, start_y);
4203 let first_top_right = point(first_line.end_x, start_y);
4204
4205 let curve_height = point(Pixels::ZERO, self.corner_radius);
4206 let curve_width = |start_x: Pixels, end_x: Pixels| {
4207 let max = (end_x - start_x) / 2.;
4208 let width = if max < self.corner_radius {
4209 max
4210 } else {
4211 self.corner_radius
4212 };
4213
4214 point(width, Pixels::ZERO)
4215 };
4216
4217 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
4218 let mut path = gpui::Path::new(first_top_right - top_curve_width);
4219 path.curve_to(first_top_right + curve_height, first_top_right);
4220
4221 let mut iter = lines.iter().enumerate().peekable();
4222 while let Some((ix, line)) = iter.next() {
4223 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
4224
4225 if let Some((_, next_line)) = iter.peek() {
4226 let next_top_right = point(next_line.end_x, bottom_right.y);
4227
4228 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
4229 Ordering::Equal => {
4230 path.line_to(bottom_right);
4231 }
4232 Ordering::Less => {
4233 let curve_width = curve_width(next_top_right.x, bottom_right.x);
4234 path.line_to(bottom_right - curve_height);
4235 if self.corner_radius > Pixels::ZERO {
4236 path.curve_to(bottom_right - curve_width, bottom_right);
4237 }
4238 path.line_to(next_top_right + curve_width);
4239 if self.corner_radius > Pixels::ZERO {
4240 path.curve_to(next_top_right + curve_height, next_top_right);
4241 }
4242 }
4243 Ordering::Greater => {
4244 let curve_width = curve_width(bottom_right.x, next_top_right.x);
4245 path.line_to(bottom_right - curve_height);
4246 if self.corner_radius > Pixels::ZERO {
4247 path.curve_to(bottom_right + curve_width, bottom_right);
4248 }
4249 path.line_to(next_top_right - curve_width);
4250 if self.corner_radius > Pixels::ZERO {
4251 path.curve_to(next_top_right + curve_height, next_top_right);
4252 }
4253 }
4254 }
4255 } else {
4256 let curve_width = curve_width(line.start_x, line.end_x);
4257 path.line_to(bottom_right - curve_height);
4258 if self.corner_radius > Pixels::ZERO {
4259 path.curve_to(bottom_right - curve_width, bottom_right);
4260 }
4261
4262 let bottom_left = point(line.start_x, bottom_right.y);
4263 path.line_to(bottom_left + curve_width);
4264 if self.corner_radius > Pixels::ZERO {
4265 path.curve_to(bottom_left - curve_height, bottom_left);
4266 }
4267 }
4268 }
4269
4270 if first_line.start_x > last_line.start_x {
4271 let curve_width = curve_width(last_line.start_x, first_line.start_x);
4272 let second_top_left = point(last_line.start_x, start_y + self.line_height);
4273 path.line_to(second_top_left + curve_height);
4274 if self.corner_radius > Pixels::ZERO {
4275 path.curve_to(second_top_left + curve_width, second_top_left);
4276 }
4277 let first_bottom_left = point(first_line.start_x, second_top_left.y);
4278 path.line_to(first_bottom_left - curve_width);
4279 if self.corner_radius > Pixels::ZERO {
4280 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
4281 }
4282 }
4283
4284 path.line_to(first_top_left + curve_height);
4285 if self.corner_radius > Pixels::ZERO {
4286 path.curve_to(first_top_left + top_curve_width, first_top_left);
4287 }
4288 path.line_to(first_top_right - top_curve_width);
4289
4290 cx.paint_path(path, self.color);
4291 }
4292}
4293
4294pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
4295 (delta.pow(1.5) / 100.0).into()
4296}
4297
4298fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
4299 (delta.pow(1.2) / 300.0).into()
4300}
4301
4302#[cfg(test)]
4303mod tests {
4304 use super::*;
4305 use crate::{
4306 display_map::{BlockDisposition, BlockProperties},
4307 editor_tests::{init_test, update_test_language_settings},
4308 Editor, MultiBuffer,
4309 };
4310 use gpui::TestAppContext;
4311 use language::language_settings;
4312 use log::info;
4313 use std::num::NonZeroU32;
4314 use util::test::sample_text;
4315
4316 #[gpui::test]
4317 fn test_shape_line_numbers(cx: &mut TestAppContext) {
4318 init_test(cx, |_| {});
4319 let window = cx.add_window(|cx| {
4320 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4321 Editor::new(EditorMode::Full, buffer, None, cx)
4322 });
4323
4324 let editor = window.root(cx).unwrap();
4325 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4326 let element = EditorElement::new(&editor, style);
4327 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
4328
4329 let layouts = cx
4330 .update_window(*window, |_, cx| {
4331 cx.with_element_context(|cx| {
4332 element
4333 .layout_line_numbers(
4334 0..6,
4335 (0..6).map(Some),
4336 &Default::default(),
4337 Some(DisplayPoint::new(0, 0)),
4338 &snapshot,
4339 cx,
4340 )
4341 .0
4342 })
4343 })
4344 .unwrap();
4345 assert_eq!(layouts.len(), 6);
4346
4347 let relative_rows =
4348 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(0..6), Some(3));
4349 assert_eq!(relative_rows[&0], 3);
4350 assert_eq!(relative_rows[&1], 2);
4351 assert_eq!(relative_rows[&2], 1);
4352 // current line has no relative number
4353 assert_eq!(relative_rows[&4], 1);
4354 assert_eq!(relative_rows[&5], 2);
4355
4356 // works if cursor is before screen
4357 let relative_rows =
4358 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(3..6), Some(1));
4359 assert_eq!(relative_rows.len(), 3);
4360 assert_eq!(relative_rows[&3], 2);
4361 assert_eq!(relative_rows[&4], 3);
4362 assert_eq!(relative_rows[&5], 4);
4363
4364 // works if cursor is after screen
4365 let relative_rows =
4366 element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(0..3), Some(6));
4367 assert_eq!(relative_rows.len(), 3);
4368 assert_eq!(relative_rows[&0], 5);
4369 assert_eq!(relative_rows[&1], 4);
4370 assert_eq!(relative_rows[&2], 3);
4371 }
4372
4373 #[gpui::test]
4374 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
4375 init_test(cx, |_| {});
4376
4377 let window = cx.add_window(|cx| {
4378 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
4379 Editor::new(EditorMode::Full, buffer, None, cx)
4380 });
4381 let editor = window.root(cx).unwrap();
4382 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4383 let mut element = EditorElement::new(&editor, style);
4384
4385 window
4386 .update(cx, |editor, cx| {
4387 editor.cursor_shape = CursorShape::Block;
4388 editor.change_selections(None, cx, |s| {
4389 s.select_ranges([
4390 Point::new(0, 0)..Point::new(1, 0),
4391 Point::new(3, 2)..Point::new(3, 3),
4392 Point::new(5, 6)..Point::new(6, 0),
4393 ]);
4394 });
4395 })
4396 .unwrap();
4397 let state = cx
4398 .update_window(window.into(), |_view, cx| {
4399 cx.with_element_context(|cx| {
4400 element.after_layout(
4401 Bounds {
4402 origin: point(px(500.), px(500.)),
4403 size: size(px(500.), px(500.)),
4404 },
4405 &mut (),
4406 cx,
4407 )
4408 })
4409 })
4410 .unwrap();
4411
4412 assert_eq!(state.selections.len(), 1);
4413 let local_selections = &state.selections[0].1;
4414 assert_eq!(local_selections.len(), 3);
4415 // moves cursor back one line
4416 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
4417 assert_eq!(
4418 local_selections[0].range,
4419 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
4420 );
4421
4422 // moves cursor back one column
4423 assert_eq!(
4424 local_selections[1].range,
4425 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
4426 );
4427 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
4428
4429 // leaves cursor on the max point
4430 assert_eq!(
4431 local_selections[2].range,
4432 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
4433 );
4434 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
4435
4436 // active lines does not include 1 (even though the range of the selection does)
4437 assert_eq!(
4438 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
4439 vec![0, 3, 5, 6]
4440 );
4441
4442 // multi-buffer support
4443 // in DisplayPoint coordinates, this is what we're dealing with:
4444 // 0: [[file
4445 // 1: header]]
4446 // 2: aaaaaa
4447 // 3: bbbbbb
4448 // 4: cccccc
4449 // 5:
4450 // 6: ...
4451 // 7: ffffff
4452 // 8: gggggg
4453 // 9: hhhhhh
4454 // 10:
4455 // 11: [[file
4456 // 12: header]]
4457 // 13: bbbbbb
4458 // 14: cccccc
4459 // 15: dddddd
4460 let window = cx.add_window(|cx| {
4461 let buffer = MultiBuffer::build_multi(
4462 [
4463 (
4464 &(sample_text(8, 6, 'a') + "\n"),
4465 vec![
4466 Point::new(0, 0)..Point::new(3, 0),
4467 Point::new(4, 0)..Point::new(7, 0),
4468 ],
4469 ),
4470 (
4471 &(sample_text(8, 6, 'a') + "\n"),
4472 vec![Point::new(1, 0)..Point::new(3, 0)],
4473 ),
4474 ],
4475 cx,
4476 );
4477 Editor::new(EditorMode::Full, buffer, None, cx)
4478 });
4479 let editor = window.root(cx).unwrap();
4480 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4481 let mut element = EditorElement::new(&editor, style);
4482 let _state = window.update(cx, |editor, cx| {
4483 editor.cursor_shape = CursorShape::Block;
4484 editor.change_selections(None, cx, |s| {
4485 s.select_display_ranges([
4486 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
4487 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
4488 ]);
4489 });
4490 });
4491
4492 let state = cx
4493 .update_window(window.into(), |_view, cx| {
4494 cx.with_element_context(|cx| {
4495 element.after_layout(
4496 Bounds {
4497 origin: point(px(500.), px(500.)),
4498 size: size(px(500.), px(500.)),
4499 },
4500 &mut (),
4501 cx,
4502 )
4503 })
4504 })
4505 .unwrap();
4506 assert_eq!(state.selections.len(), 1);
4507 let local_selections = &state.selections[0].1;
4508 assert_eq!(local_selections.len(), 2);
4509
4510 // moves cursor on excerpt boundary back a line
4511 // and doesn't allow selection to bleed through
4512 assert_eq!(
4513 local_selections[0].range,
4514 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
4515 );
4516 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
4517 // moves cursor on buffer boundary back two lines
4518 // and doesn't allow selection to bleed through
4519 assert_eq!(
4520 local_selections[1].range,
4521 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
4522 );
4523 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
4524 }
4525
4526 #[gpui::test]
4527 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
4528 init_test(cx, |_| {});
4529
4530 let window = cx.add_window(|cx| {
4531 let buffer = MultiBuffer::build_simple("", cx);
4532 Editor::new(EditorMode::Full, buffer, None, cx)
4533 });
4534 let editor = window.root(cx).unwrap();
4535 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4536 window
4537 .update(cx, |editor, cx| {
4538 editor.set_placeholder_text("hello", cx);
4539 editor.insert_blocks(
4540 [BlockProperties {
4541 style: BlockStyle::Fixed,
4542 disposition: BlockDisposition::Above,
4543 height: 3,
4544 position: Anchor::min(),
4545 render: Box::new(|_| div().into_any()),
4546 }],
4547 None,
4548 cx,
4549 );
4550
4551 // Blur the editor so that it displays placeholder text.
4552 cx.blur();
4553 })
4554 .unwrap();
4555
4556 let mut element = EditorElement::new(&editor, style);
4557 let state = cx
4558 .update_window(window.into(), |_view, cx| {
4559 cx.with_element_context(|cx| {
4560 element.after_layout(
4561 Bounds {
4562 origin: point(px(500.), px(500.)),
4563 size: size(px(500.), px(500.)),
4564 },
4565 &mut (),
4566 cx,
4567 )
4568 })
4569 })
4570 .unwrap();
4571
4572 assert_eq!(state.position_map.line_layouts.len(), 4);
4573 assert_eq!(
4574 state
4575 .line_numbers
4576 .iter()
4577 .map(Option::is_some)
4578 .collect::<Vec<_>>(),
4579 &[false, false, false, true]
4580 );
4581 }
4582
4583 #[gpui::test]
4584 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
4585 const TAB_SIZE: u32 = 4;
4586
4587 let input_text = "\t \t|\t| a b";
4588 let expected_invisibles = vec![
4589 Invisible::Tab {
4590 line_start_offset: 0,
4591 },
4592 Invisible::Whitespace {
4593 line_offset: TAB_SIZE as usize,
4594 },
4595 Invisible::Tab {
4596 line_start_offset: TAB_SIZE as usize + 1,
4597 },
4598 Invisible::Tab {
4599 line_start_offset: TAB_SIZE as usize * 2 + 1,
4600 },
4601 Invisible::Whitespace {
4602 line_offset: TAB_SIZE as usize * 3 + 1,
4603 },
4604 Invisible::Whitespace {
4605 line_offset: TAB_SIZE as usize * 3 + 3,
4606 },
4607 ];
4608 assert_eq!(
4609 expected_invisibles.len(),
4610 input_text
4611 .chars()
4612 .filter(|initial_char| initial_char.is_whitespace())
4613 .count(),
4614 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4615 );
4616
4617 init_test(cx, |s| {
4618 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4619 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
4620 });
4621
4622 let actual_invisibles =
4623 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
4624
4625 assert_eq!(expected_invisibles, actual_invisibles);
4626 }
4627
4628 #[gpui::test]
4629 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
4630 init_test(cx, |s| {
4631 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4632 s.defaults.tab_size = NonZeroU32::new(4);
4633 });
4634
4635 for editor_mode_without_invisibles in [
4636 EditorMode::SingleLine,
4637 EditorMode::AutoHeight { max_lines: 100 },
4638 ] {
4639 let invisibles = collect_invisibles_from_new_editor(
4640 cx,
4641 editor_mode_without_invisibles,
4642 "\t\t\t| | a b",
4643 px(500.0),
4644 );
4645 assert!(invisibles.is_empty(),
4646 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4647 }
4648 }
4649
4650 #[gpui::test]
4651 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4652 let tab_size = 4;
4653 let input_text = "a\tbcd ".repeat(9);
4654 let repeated_invisibles = [
4655 Invisible::Tab {
4656 line_start_offset: 1,
4657 },
4658 Invisible::Whitespace {
4659 line_offset: tab_size as usize + 3,
4660 },
4661 Invisible::Whitespace {
4662 line_offset: tab_size as usize + 4,
4663 },
4664 Invisible::Whitespace {
4665 line_offset: tab_size as usize + 5,
4666 },
4667 ];
4668 let expected_invisibles = std::iter::once(repeated_invisibles)
4669 .cycle()
4670 .take(9)
4671 .flatten()
4672 .collect::<Vec<_>>();
4673 assert_eq!(
4674 expected_invisibles.len(),
4675 input_text
4676 .chars()
4677 .filter(|initial_char| initial_char.is_whitespace())
4678 .count(),
4679 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4680 );
4681 info!("Expected invisibles: {expected_invisibles:?}");
4682
4683 init_test(cx, |_| {});
4684
4685 // Put the same string with repeating whitespace pattern into editors of various size,
4686 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4687 let resize_step = 10.0;
4688 let mut editor_width = 200.0;
4689 while editor_width <= 1000.0 {
4690 update_test_language_settings(cx, |s| {
4691 s.defaults.tab_size = NonZeroU32::new(tab_size);
4692 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4693 s.defaults.preferred_line_length = Some(editor_width as u32);
4694 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4695 });
4696
4697 let actual_invisibles = collect_invisibles_from_new_editor(
4698 cx,
4699 EditorMode::Full,
4700 &input_text,
4701 px(editor_width),
4702 );
4703
4704 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4705 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4706 let mut i = 0;
4707 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4708 i = actual_index;
4709 match expected_invisibles.get(i) {
4710 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4711 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4712 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4713 _ => {
4714 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4715 }
4716 },
4717 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4718 }
4719 }
4720 let missing_expected_invisibles = &expected_invisibles[i + 1..];
4721 assert!(
4722 missing_expected_invisibles.is_empty(),
4723 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4724 );
4725
4726 editor_width += resize_step;
4727 }
4728 }
4729
4730 fn collect_invisibles_from_new_editor(
4731 cx: &mut TestAppContext,
4732 editor_mode: EditorMode,
4733 input_text: &str,
4734 editor_width: Pixels,
4735 ) -> Vec<Invisible> {
4736 info!(
4737 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
4738 editor_width.0
4739 );
4740 let window = cx.add_window(|cx| {
4741 let buffer = MultiBuffer::build_simple(&input_text, cx);
4742 Editor::new(editor_mode, buffer, None, cx)
4743 });
4744 let editor = window.root(cx).unwrap();
4745 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
4746 let mut element = EditorElement::new(&editor, style);
4747 window
4748 .update(cx, |editor, cx| {
4749 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4750 editor.set_wrap_width(Some(editor_width), cx);
4751 })
4752 .unwrap();
4753 let layout_state = cx
4754 .update_window(window.into(), |_, cx| {
4755 cx.with_element_context(|cx| {
4756 element.after_layout(
4757 Bounds {
4758 origin: point(px(500.), px(500.)),
4759 size: size(px(500.), px(500.)),
4760 },
4761 &mut (),
4762 cx,
4763 )
4764 })
4765 })
4766 .unwrap();
4767
4768 layout_state
4769 .position_map
4770 .line_layouts
4771 .iter()
4772 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
4773 .cloned()
4774 .collect()
4775 }
4776}
4777
4778pub fn register_action<T: Action>(
4779 view: &View<Editor>,
4780 cx: &mut WindowContext,
4781 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4782) {
4783 let view = view.clone();
4784 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4785 let action = action.downcast_ref().unwrap();
4786 if phase == DispatchPhase::Bubble {
4787 view.update(cx, |editor, cx| {
4788 listener(editor, action, cx);
4789 })
4790 }
4791 })
4792}
4793
4794fn compute_auto_height_layout(
4795 editor: &mut Editor,
4796 max_lines: usize,
4797 max_line_number_width: Pixels,
4798 known_dimensions: Size<Option<Pixels>>,
4799 cx: &mut ViewContext<Editor>,
4800) -> Option<Size<Pixels>> {
4801 let width = known_dimensions.width?;
4802 if let Some(height) = known_dimensions.height {
4803 return Some(size(width, height));
4804 }
4805
4806 let style = editor.style.as_ref().unwrap();
4807 let font_id = cx.text_system().resolve_font(&style.text.font());
4808 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4809 let line_height = style.text.line_height_in_pixels(cx.rem_size());
4810 let em_width = cx
4811 .text_system()
4812 .typographic_bounds(font_id, font_size, 'm')
4813 .unwrap()
4814 .size
4815 .width;
4816
4817 let mut snapshot = editor.snapshot(cx);
4818 let gutter_dimensions =
4819 snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
4820
4821 editor.gutter_width = gutter_dimensions.width;
4822 let text_width = width - gutter_dimensions.width;
4823 let overscroll = size(em_width, px(0.));
4824
4825 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
4826 if editor.set_wrap_width(Some(editor_width), cx) {
4827 snapshot = editor.snapshot(cx);
4828 }
4829
4830 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
4831 let height = scroll_height
4832 .max(line_height)
4833 .min(line_height * max_lines as f32);
4834
4835 Some(size(width, height))
4836}