1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::ShowScrollbar,
7 git::{diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::{
9 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
10 },
11 link_go_to_definition::{
12 go_to_fetched_definition, go_to_fetched_type_definition, show_link_definition,
13 update_go_to_definition_link, update_inlay_link_and_hover_points, GoToDefinitionTrigger,
14 LinkGoToDefinitionState,
15 },
16 mouse_context_menu,
17 scroll::scroll_amount::ScrollAmount,
18 CursorShape, DisplayPoint, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
19 HalfPageDown, HalfPageUp, LineDown, LineUp, MoveDown, OpenExcerpts, PageDown, PageUp, Point,
20 SelectPhase, Selection, SoftWrap, ToPoint, MAX_LINE_LEN,
21};
22use anyhow::Result;
23use collections::{BTreeMap, HashMap};
24use git::diff::DiffHunkStatus;
25use gpui::{
26 div, overlay, point, px, relative, size, transparent_black, Action, AnchorCorner, AnyElement,
27 AsyncWindowContext, AvailableSpace, BorrowWindow, Bounds, ContentMask, Corners, CursorStyle,
28 DispatchPhase, Edges, Element, ElementId, ElementInputHandler, Entity, EntityId, Hsla,
29 InteractiveBounds, InteractiveElement, IntoElement, LineLayout, ModifiersChangedEvent,
30 MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, RenderOnce,
31 ScrollWheelEvent, ShapedLine, SharedString, Size, StackingOrder, StatefulInteractiveElement,
32 Style, Styled, TextRun, TextStyle, View, ViewContext, WeakView, WindowContext, WrappedLine,
33};
34use itertools::Itertools;
35use language::language_settings::ShowWhitespaceSetting;
36use multi_buffer::Anchor;
37use project::{
38 project_settings::{GitGutterSetting, ProjectSettings},
39 ProjectPath,
40};
41use settings::Settings;
42use smallvec::SmallVec;
43use std::{
44 any::TypeId,
45 borrow::Cow,
46 cmp::{self, Ordering},
47 fmt::Write,
48 iter,
49 ops::Range,
50 sync::Arc,
51};
52use sum_tree::Bias;
53use theme::{ActiveTheme, PlayerColor};
54use ui::{
55 h_stack, ButtonLike, ButtonStyle, Disclosure, IconButton, IconElement, IconSize, Label, Tooltip,
56};
57use ui::{prelude::*, Icon};
58use util::ResultExt;
59use workspace::item::Item;
60
61enum FoldMarkers {}
62
63struct SelectionLayout {
64 head: DisplayPoint,
65 cursor_shape: CursorShape,
66 is_newest: bool,
67 is_local: bool,
68 range: Range<DisplayPoint>,
69 active_rows: Range<u32>,
70}
71
72impl SelectionLayout {
73 fn new<T: ToPoint + ToDisplayPoint + Clone>(
74 selection: Selection<T>,
75 line_mode: bool,
76 cursor_shape: CursorShape,
77 map: &DisplaySnapshot,
78 is_newest: bool,
79 is_local: bool,
80 ) -> Self {
81 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
82 let display_selection = point_selection.map(|p| p.to_display_point(map));
83 let mut range = display_selection.range();
84 let mut head = display_selection.head();
85 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
86 ..map.next_line_boundary(point_selection.end).1.row();
87
88 // vim visual line mode
89 if line_mode {
90 let point_range = map.expand_to_line(point_selection.range());
91 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
92 }
93
94 // any vim visual mode (including line mode)
95 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
96 if head.column() > 0 {
97 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
98 } else if head.row() > 0 && head != map.max_point() {
99 head = map.clip_point(
100 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
101 Bias::Left,
102 );
103 // updating range.end is a no-op unless you're cursor is
104 // on the newline containing a multi-buffer divider
105 // in which case the clip_point may have moved the head up
106 // an additional row.
107 range.end = DisplayPoint::new(head.row() + 1, 0);
108 active_rows.end = head.row();
109 }
110 }
111
112 Self {
113 head,
114 cursor_shape,
115 is_newest,
116 is_local,
117 range,
118 active_rows,
119 }
120 }
121}
122
123pub struct EditorElement {
124 editor: View<Editor>,
125 style: EditorStyle,
126}
127
128impl EditorElement {
129 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
130 Self {
131 editor: editor.clone(),
132 style,
133 }
134 }
135
136 fn register_actions(&self, cx: &mut WindowContext) {
137 let view = &self.editor;
138 self.editor.update(cx, |editor, cx| {
139 for action in editor.editor_actions.iter() {
140 (action)(cx)
141 }
142 });
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_up);
147 register_action(view, cx, Editor::cancel);
148 register_action(view, cx, Editor::newline);
149 register_action(view, cx, Editor::newline_above);
150 register_action(view, cx, Editor::newline_below);
151 register_action(view, cx, Editor::backspace);
152 register_action(view, cx, Editor::delete);
153 register_action(view, cx, Editor::tab);
154 register_action(view, cx, Editor::tab_prev);
155 register_action(view, cx, Editor::indent);
156 register_action(view, cx, Editor::outdent);
157 register_action(view, cx, Editor::delete_line);
158 register_action(view, cx, Editor::join_lines);
159 register_action(view, cx, Editor::sort_lines_case_sensitive);
160 register_action(view, cx, Editor::sort_lines_case_insensitive);
161 register_action(view, cx, Editor::reverse_lines);
162 register_action(view, cx, Editor::shuffle_lines);
163 register_action(view, cx, Editor::convert_to_upper_case);
164 register_action(view, cx, Editor::convert_to_lower_case);
165 register_action(view, cx, Editor::convert_to_title_case);
166 register_action(view, cx, Editor::convert_to_snake_case);
167 register_action(view, cx, Editor::convert_to_kebab_case);
168 register_action(view, cx, Editor::convert_to_upper_camel_case);
169 register_action(view, cx, Editor::convert_to_lower_camel_case);
170 register_action(view, cx, Editor::delete_to_previous_word_start);
171 register_action(view, cx, Editor::delete_to_previous_subword_start);
172 register_action(view, cx, Editor::delete_to_next_word_end);
173 register_action(view, cx, Editor::delete_to_next_subword_end);
174 register_action(view, cx, Editor::delete_to_beginning_of_line);
175 register_action(view, cx, Editor::delete_to_end_of_line);
176 register_action(view, cx, Editor::cut_to_end_of_line);
177 register_action(view, cx, Editor::duplicate_line);
178 register_action(view, cx, Editor::move_line_up);
179 register_action(view, cx, Editor::move_line_down);
180 register_action(view, cx, Editor::transpose);
181 register_action(view, cx, Editor::cut);
182 register_action(view, cx, Editor::copy);
183 register_action(view, cx, Editor::paste);
184 register_action(view, cx, Editor::undo);
185 register_action(view, cx, Editor::redo);
186 register_action(view, cx, Editor::move_page_up);
187 register_action(view, cx, Editor::move_page_down);
188 register_action(view, cx, Editor::next_screen);
189 register_action(view, cx, Editor::scroll_cursor_top);
190 register_action(view, cx, Editor::scroll_cursor_center);
191 register_action(view, cx, Editor::scroll_cursor_bottom);
192 register_action(view, cx, |editor, _: &LineDown, cx| {
193 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
194 });
195 register_action(view, cx, |editor, _: &LineUp, cx| {
196 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
197 });
198 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
199 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
200 });
201 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
202 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
203 });
204 register_action(view, cx, |editor, _: &PageDown, cx| {
205 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
206 });
207 register_action(view, cx, |editor, _: &PageUp, cx| {
208 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
209 });
210 register_action(view, cx, Editor::move_to_previous_word_start);
211 register_action(view, cx, Editor::move_to_previous_subword_start);
212 register_action(view, cx, Editor::move_to_next_word_end);
213 register_action(view, cx, Editor::move_to_next_subword_end);
214 register_action(view, cx, Editor::move_to_beginning_of_line);
215 register_action(view, cx, Editor::move_to_end_of_line);
216 register_action(view, cx, Editor::move_to_start_of_paragraph);
217 register_action(view, cx, Editor::move_to_end_of_paragraph);
218 register_action(view, cx, Editor::move_to_beginning);
219 register_action(view, cx, Editor::move_to_end);
220 register_action(view, cx, Editor::select_up);
221 register_action(view, cx, Editor::select_down);
222 register_action(view, cx, Editor::select_left);
223 register_action(view, cx, Editor::select_right);
224 register_action(view, cx, Editor::select_to_previous_word_start);
225 register_action(view, cx, Editor::select_to_previous_subword_start);
226 register_action(view, cx, Editor::select_to_next_word_end);
227 register_action(view, cx, Editor::select_to_next_subword_end);
228 register_action(view, cx, Editor::select_to_beginning_of_line);
229 register_action(view, cx, Editor::select_to_end_of_line);
230 register_action(view, cx, Editor::select_to_start_of_paragraph);
231 register_action(view, cx, Editor::select_to_end_of_paragraph);
232 register_action(view, cx, Editor::select_to_beginning);
233 register_action(view, cx, Editor::select_to_end);
234 register_action(view, cx, Editor::select_all);
235 register_action(view, cx, |editor, action, cx| {
236 editor.select_all_matches(action, cx).log_err();
237 });
238 register_action(view, cx, Editor::select_line);
239 register_action(view, cx, Editor::split_selection_into_lines);
240 register_action(view, cx, Editor::add_selection_above);
241 register_action(view, cx, Editor::add_selection_below);
242 register_action(view, cx, |editor, action, cx| {
243 editor.select_next(action, cx).log_err();
244 });
245 register_action(view, cx, |editor, action, cx| {
246 editor.select_previous(action, cx).log_err();
247 });
248 register_action(view, cx, Editor::toggle_comments);
249 register_action(view, cx, Editor::select_larger_syntax_node);
250 register_action(view, cx, Editor::select_smaller_syntax_node);
251 register_action(view, cx, Editor::move_to_enclosing_bracket);
252 register_action(view, cx, Editor::undo_selection);
253 register_action(view, cx, Editor::redo_selection);
254 register_action(view, cx, Editor::go_to_diagnostic);
255 register_action(view, cx, Editor::go_to_prev_diagnostic);
256 register_action(view, cx, Editor::go_to_hunk);
257 register_action(view, cx, Editor::go_to_prev_hunk);
258 register_action(view, cx, Editor::go_to_definition);
259 register_action(view, cx, Editor::go_to_definition_split);
260 register_action(view, cx, Editor::go_to_type_definition);
261 register_action(view, cx, Editor::go_to_type_definition_split);
262 register_action(view, cx, Editor::fold);
263 register_action(view, cx, Editor::fold_at);
264 register_action(view, cx, Editor::unfold_lines);
265 register_action(view, cx, Editor::unfold_at);
266 register_action(view, cx, Editor::fold_selected_ranges);
267 register_action(view, cx, Editor::show_completions);
268 register_action(view, cx, Editor::toggle_code_actions);
269 register_action(view, cx, Editor::open_excerpts);
270 register_action(view, cx, Editor::toggle_soft_wrap);
271 register_action(view, cx, Editor::toggle_inlay_hints);
272 register_action(view, cx, hover_popover::hover);
273 register_action(view, cx, Editor::reveal_in_finder);
274 register_action(view, cx, Editor::copy_path);
275 register_action(view, cx, Editor::copy_relative_path);
276 register_action(view, cx, Editor::copy_highlight_json);
277 register_action(view, cx, |editor, action, cx| {
278 if let Some(task) = editor.format(action, cx) {
279 task.detach_and_log_err(cx);
280 } else {
281 cx.propagate();
282 }
283 });
284 register_action(view, cx, Editor::restart_language_server);
285 register_action(view, cx, Editor::show_character_palette);
286 register_action(view, cx, |editor, action, cx| {
287 if let Some(task) = editor.confirm_completion(action, cx) {
288 task.detach_and_log_err(cx);
289 } else {
290 cx.propagate();
291 }
292 });
293 register_action(view, cx, |editor, action, cx| {
294 if let Some(task) = editor.confirm_code_action(action, cx) {
295 task.detach_and_log_err(cx);
296 } else {
297 cx.propagate();
298 }
299 });
300 register_action(view, cx, |editor, action, cx| {
301 if let Some(task) = editor.rename(action, cx) {
302 task.detach_and_log_err(cx);
303 } else {
304 cx.propagate();
305 }
306 });
307 register_action(view, cx, |editor, action, cx| {
308 if let Some(task) = editor.confirm_rename(action, cx) {
309 task.detach_and_log_err(cx);
310 } else {
311 cx.propagate();
312 }
313 });
314 register_action(view, cx, |editor, action, cx| {
315 if let Some(task) = editor.find_all_references(action, cx) {
316 task.detach_and_log_err(cx);
317 } else {
318 cx.propagate();
319 }
320 });
321 register_action(view, cx, Editor::next_copilot_suggestion);
322 register_action(view, cx, Editor::previous_copilot_suggestion);
323 register_action(view, cx, Editor::copilot_suggest);
324 register_action(view, cx, Editor::context_menu_first);
325 register_action(view, cx, Editor::context_menu_prev);
326 register_action(view, cx, Editor::context_menu_next);
327 register_action(view, cx, Editor::context_menu_last);
328 }
329
330 fn register_key_listeners(&self, cx: &mut WindowContext) {
331 cx.on_key_event({
332 let editor = self.editor.clone();
333 move |event: &ModifiersChangedEvent, phase, cx| {
334 if phase != DispatchPhase::Bubble {
335 return;
336 }
337
338 if editor.update(cx, |editor, cx| Self::modifiers_changed(editor, event, cx)) {
339 cx.stop_propagation();
340 }
341 }
342 });
343 }
344
345 pub(crate) fn modifiers_changed(
346 editor: &mut Editor,
347 event: &ModifiersChangedEvent,
348 cx: &mut ViewContext<Editor>,
349 ) -> bool {
350 let pending_selection = editor.has_pending_selection();
351
352 if let Some(point) = &editor.link_go_to_definition_state.last_trigger_point {
353 if event.command && !pending_selection {
354 let point = point.clone();
355 let snapshot = editor.snapshot(cx);
356 let kind = point.definition_kind(event.shift);
357
358 show_link_definition(kind, editor, point, snapshot, cx);
359 return false;
360 }
361 }
362
363 {
364 if editor.link_go_to_definition_state.symbol_range.is_some()
365 || !editor.link_go_to_definition_state.definitions.is_empty()
366 {
367 editor.link_go_to_definition_state.symbol_range.take();
368 editor.link_go_to_definition_state.definitions.clear();
369 cx.notify();
370 }
371
372 editor.link_go_to_definition_state.task = None;
373
374 editor.clear_highlights::<LinkGoToDefinitionState>(cx);
375 }
376
377 false
378 }
379
380 fn mouse_left_down(
381 editor: &mut Editor,
382 event: &MouseDownEvent,
383 position_map: &PositionMap,
384 text_bounds: Bounds<Pixels>,
385 gutter_bounds: Bounds<Pixels>,
386 stacking_order: &StackingOrder,
387 cx: &mut ViewContext<Editor>,
388 ) {
389 let mut click_count = event.click_count;
390 let modifiers = event.modifiers;
391
392 if gutter_bounds.contains_point(&event.position) {
393 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
394 } else if !text_bounds.contains_point(&event.position) {
395 return;
396 }
397 if !cx.was_top_layer(&event.position, stacking_order) {
398 return;
399 }
400
401 let point_for_position = position_map.point_for_position(text_bounds, event.position);
402 let position = point_for_position.previous_valid;
403 if modifiers.shift && modifiers.alt {
404 editor.select(
405 SelectPhase::BeginColumnar {
406 position,
407 goal_column: point_for_position.exact_unclipped.column(),
408 },
409 cx,
410 );
411 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
412 editor.select(
413 SelectPhase::Extend {
414 position,
415 click_count,
416 },
417 cx,
418 );
419 } else {
420 editor.select(
421 SelectPhase::Begin {
422 position,
423 add: modifiers.alt,
424 click_count,
425 },
426 cx,
427 );
428 }
429
430 cx.stop_propagation();
431 }
432
433 fn mouse_right_down(
434 editor: &mut Editor,
435 event: &MouseDownEvent,
436 position_map: &PositionMap,
437 text_bounds: Bounds<Pixels>,
438 cx: &mut ViewContext<Editor>,
439 ) {
440 if !text_bounds.contains_point(&event.position) {
441 return;
442 }
443 let point_for_position = position_map.point_for_position(text_bounds, event.position);
444 mouse_context_menu::deploy_context_menu(
445 editor,
446 event.position,
447 point_for_position.previous_valid,
448 cx,
449 );
450 cx.stop_propagation();
451 }
452
453 fn mouse_up(
454 editor: &mut Editor,
455 event: &MouseUpEvent,
456 position_map: &PositionMap,
457 text_bounds: Bounds<Pixels>,
458 stacking_order: &StackingOrder,
459 cx: &mut ViewContext<Editor>,
460 ) {
461 let end_selection = editor.has_pending_selection();
462 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
463
464 if end_selection {
465 editor.select(SelectPhase::End, cx);
466 }
467
468 if !pending_nonempty_selections
469 && event.modifiers.command
470 && text_bounds.contains_point(&event.position)
471 && cx.was_top_layer(&event.position, stacking_order)
472 {
473 let point = position_map.point_for_position(text_bounds, event.position);
474 let could_be_inlay = point.as_valid().is_none();
475 let split = event.modifiers.alt;
476 if event.modifiers.shift || could_be_inlay {
477 go_to_fetched_type_definition(editor, point, split, cx);
478 } else {
479 go_to_fetched_definition(editor, point, split, cx);
480 }
481
482 cx.stop_propagation();
483 } else if end_selection {
484 cx.stop_propagation();
485 }
486 }
487
488 fn mouse_moved(
489 editor: &mut Editor,
490 event: &MouseMoveEvent,
491 position_map: &PositionMap,
492 text_bounds: Bounds<Pixels>,
493 gutter_bounds: Bounds<Pixels>,
494 stacking_order: &StackingOrder,
495 cx: &mut ViewContext<Editor>,
496 ) {
497 let modifiers = event.modifiers;
498 if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
499 let point_for_position = position_map.point_for_position(text_bounds, event.position);
500 let mut scroll_delta = gpui::Point::<f32>::default();
501 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
502 let top = text_bounds.origin.y + vertical_margin;
503 let bottom = text_bounds.lower_left().y - vertical_margin;
504 if event.position.y < top {
505 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
506 }
507 if event.position.y > bottom {
508 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
509 }
510
511 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
512 let left = text_bounds.origin.x + horizontal_margin;
513 let right = text_bounds.upper_right().x - horizontal_margin;
514 if event.position.x < left {
515 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
516 }
517 if event.position.x > right {
518 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
519 }
520
521 editor.select(
522 SelectPhase::Update {
523 position: point_for_position.previous_valid,
524 goal_column: point_for_position.exact_unclipped.column(),
525 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
526 .clamp(&gpui::Point::default(), &position_map.scroll_max),
527 },
528 cx,
529 );
530 }
531
532 let text_hovered = text_bounds.contains_point(&event.position);
533 let gutter_hovered = gutter_bounds.contains_point(&event.position);
534 let was_top = cx.was_top_layer(&event.position, stacking_order);
535
536 editor.set_gutter_hovered(gutter_hovered, cx);
537
538 // Don't trigger hover popover if mouse is hovering over context menu
539 if text_hovered && was_top {
540 let point_for_position = position_map.point_for_position(text_bounds, event.position);
541
542 match point_for_position.as_valid() {
543 Some(point) => {
544 update_go_to_definition_link(
545 editor,
546 Some(GoToDefinitionTrigger::Text(point)),
547 modifiers.command,
548 modifiers.shift,
549 cx,
550 );
551 hover_at(editor, Some(point), cx);
552 }
553 None => {
554 update_inlay_link_and_hover_points(
555 &position_map.snapshot,
556 point_for_position,
557 editor,
558 modifiers.command,
559 modifiers.shift,
560 cx,
561 );
562 }
563 }
564
565 cx.stop_propagation();
566 } else {
567 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
568 hover_at(editor, None, cx);
569 if gutter_hovered && was_top {
570 cx.stop_propagation();
571 }
572 }
573 }
574
575 fn scroll(
576 editor: &mut Editor,
577 event: &ScrollWheelEvent,
578 position_map: &PositionMap,
579 bounds: &InteractiveBounds,
580 cx: &mut ViewContext<Editor>,
581 ) {
582 if !bounds.visibly_contains(&event.position, cx) {
583 return;
584 }
585
586 let line_height = position_map.line_height;
587 let max_glyph_width = position_map.em_width;
588 let (delta, axis) = match event.delta {
589 gpui::ScrollDelta::Pixels(mut pixels) => {
590 //Trackpad
591 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
592 (pixels, axis)
593 }
594
595 gpui::ScrollDelta::Lines(lines) => {
596 //Not trackpad
597 let pixels = point(lines.x * max_glyph_width, lines.y * line_height);
598 (pixels, None)
599 }
600 };
601
602 let scroll_position = position_map.snapshot.scroll_position();
603 let x = f32::from((scroll_position.x * max_glyph_width - delta.x) / max_glyph_width);
604 let y = f32::from((scroll_position.y * line_height - delta.y) / line_height);
605 let scroll_position = point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
606 editor.scroll(scroll_position, axis, cx);
607 cx.stop_propagation();
608 }
609
610 fn paint_background(
611 &self,
612 gutter_bounds: Bounds<Pixels>,
613 text_bounds: Bounds<Pixels>,
614 layout: &LayoutState,
615 cx: &mut WindowContext,
616 ) {
617 let bounds = gutter_bounds.union(&text_bounds);
618 let scroll_top =
619 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
620 let gutter_bg = cx.theme().colors().editor_gutter_background;
621 cx.paint_quad(
622 gutter_bounds,
623 Corners::default(),
624 gutter_bg,
625 Edges::default(),
626 transparent_black(),
627 );
628 cx.paint_quad(
629 text_bounds,
630 Corners::default(),
631 self.style.background,
632 Edges::default(),
633 transparent_black(),
634 );
635
636 if let EditorMode::Full = layout.mode {
637 let mut active_rows = layout.active_rows.iter().peekable();
638 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
639 let mut end_row = *start_row;
640 while active_rows.peek().map_or(false, |r| {
641 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
642 }) {
643 active_rows.next().unwrap();
644 end_row += 1;
645 }
646
647 if !contains_non_empty_selection {
648 let origin = point(
649 bounds.origin.x,
650 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
651 - scroll_top,
652 );
653 let size = size(
654 bounds.size.width,
655 layout.position_map.line_height * (end_row - start_row + 1) as f32,
656 );
657 let active_line_bg = cx.theme().colors().editor_active_line_background;
658 cx.paint_quad(
659 Bounds { origin, size },
660 Corners::default(),
661 active_line_bg,
662 Edges::default(),
663 transparent_black(),
664 );
665 }
666 }
667
668 if let Some(highlighted_rows) = &layout.highlighted_rows {
669 let origin = point(
670 bounds.origin.x,
671 bounds.origin.y
672 + (layout.position_map.line_height * highlighted_rows.start as f32)
673 - scroll_top,
674 );
675 let size = size(
676 bounds.size.width,
677 layout.position_map.line_height * highlighted_rows.len() as f32,
678 );
679 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
680 cx.paint_quad(
681 Bounds { origin, size },
682 Corners::default(),
683 highlighted_line_bg,
684 Edges::default(),
685 transparent_black(),
686 );
687 }
688
689 let scroll_left =
690 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
691
692 for (wrap_position, active) in layout.wrap_guides.iter() {
693 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
694 - scroll_left;
695
696 if x < text_bounds.origin.x
697 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
698 {
699 continue;
700 }
701
702 let color = if *active {
703 cx.theme().colors().editor_active_wrap_guide
704 } else {
705 cx.theme().colors().editor_wrap_guide
706 };
707 cx.paint_quad(
708 Bounds {
709 origin: point(x, text_bounds.origin.y),
710 size: size(px(1.), text_bounds.size.height),
711 },
712 Corners::default(),
713 color,
714 Edges::default(),
715 transparent_black(),
716 );
717 }
718 }
719 }
720
721 fn paint_gutter(
722 &mut self,
723 bounds: Bounds<Pixels>,
724 layout: &mut LayoutState,
725 cx: &mut WindowContext,
726 ) {
727 let line_height = layout.position_map.line_height;
728
729 let scroll_position = layout.position_map.snapshot.scroll_position();
730 let scroll_top = scroll_position.y * line_height;
731
732 let show_gutter = matches!(
733 ProjectSettings::get_global(cx).git.git_gutter,
734 Some(GitGutterSetting::TrackedFiles)
735 );
736
737 if show_gutter {
738 Self::paint_diff_hunks(bounds, layout, cx);
739 }
740
741 for (ix, line) in layout.line_numbers.iter().enumerate() {
742 if let Some(line) = line {
743 let line_origin = bounds.origin
744 + point(
745 bounds.size.width - line.width - layout.gutter_padding,
746 ix as f32 * line_height - (scroll_top % line_height),
747 );
748
749 line.paint(line_origin, line_height, cx);
750 }
751 }
752
753 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
754 if let Some(mut fold_indicator) = fold_indicator {
755 let mut fold_indicator = fold_indicator.into_any_element();
756 let available_space = size(
757 AvailableSpace::MinContent,
758 AvailableSpace::Definite(line_height * 0.55),
759 );
760 let fold_indicator_size = fold_indicator.measure(available_space, cx);
761
762 let position = point(
763 bounds.size.width - layout.gutter_padding,
764 ix as f32 * line_height - (scroll_top % line_height),
765 );
766 let centering_offset = point(
767 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width) / 2.,
768 (line_height - fold_indicator_size.height) / 2.,
769 );
770 let origin = bounds.origin + position + centering_offset;
771 fold_indicator.draw(origin, available_space, cx);
772 }
773 }
774
775 if let Some(indicator) = layout.code_actions_indicator.take() {
776 let mut button = indicator.button.into_any_element();
777 let available_space = size(
778 AvailableSpace::MinContent,
779 AvailableSpace::Definite(line_height),
780 );
781 let indicator_size = button.measure(available_space, cx);
782
783 let mut x = Pixels::ZERO;
784 let mut y = indicator.row as f32 * line_height - scroll_top;
785 // Center indicator.
786 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
787 y += (line_height - indicator_size.height) / 2.;
788
789 button.draw(bounds.origin + point(x, y), available_space, cx);
790 }
791 }
792
793 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut WindowContext) {
794 let line_height = layout.position_map.line_height;
795
796 let scroll_position = layout.position_map.snapshot.scroll_position();
797 let scroll_top = scroll_position.y * line_height;
798
799 for hunk in &layout.display_hunks {
800 let (display_row_range, status) = match hunk {
801 //TODO: This rendering is entirely a horrible hack
802 &DisplayDiffHunk::Folded { display_row: row } => {
803 let start_y = row as f32 * line_height - scroll_top;
804 let end_y = start_y + line_height;
805
806 let width = 0.275 * line_height;
807 let highlight_origin = bounds.origin + point(-width, start_y);
808 let highlight_size = size(width * 2., end_y - start_y);
809 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
810 cx.paint_quad(
811 highlight_bounds,
812 Corners::all(1. * line_height),
813 gpui::yellow(), // todo!("use the right color")
814 Edges::default(),
815 transparent_black(),
816 );
817
818 continue;
819 }
820
821 DisplayDiffHunk::Unfolded {
822 display_row_range,
823 status,
824 } => (display_row_range, status),
825 };
826
827 let color = match status {
828 DiffHunkStatus::Added => gpui::green(), // todo!("use the appropriate color")
829 DiffHunkStatus::Modified => gpui::yellow(), // todo!("use the appropriate color")
830
831 //TODO: This rendering is entirely a horrible hack
832 DiffHunkStatus::Removed => {
833 let row = display_row_range.start;
834
835 let offset = line_height / 2.;
836 let start_y = row as f32 * line_height - offset - scroll_top;
837 let end_y = start_y + line_height;
838
839 let width = 0.275 * line_height;
840 let highlight_origin = bounds.origin + point(-width, start_y);
841 let highlight_size = size(width * 2., end_y - start_y);
842 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
843 cx.paint_quad(
844 highlight_bounds,
845 Corners::all(1. * line_height),
846 gpui::red(), // todo!("use the right color")
847 Edges::default(),
848 transparent_black(),
849 );
850
851 continue;
852 }
853 };
854
855 let start_row = display_row_range.start;
856 let end_row = display_row_range.end;
857
858 let start_y = start_row as f32 * line_height - scroll_top;
859 let end_y = end_row as f32 * line_height - scroll_top;
860
861 let width = 0.275 * line_height;
862 let highlight_origin = bounds.origin + point(-width, start_y);
863 let highlight_size = size(width * 2., end_y - start_y);
864 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
865 cx.paint_quad(
866 highlight_bounds,
867 Corners::all(0.05 * line_height),
868 color, // todo!("use the right color")
869 Edges::default(),
870 transparent_black(),
871 );
872 }
873 }
874
875 fn paint_text(
876 &mut self,
877 text_bounds: Bounds<Pixels>,
878 layout: &mut LayoutState,
879 cx: &mut WindowContext,
880 ) {
881 let scroll_position = layout.position_map.snapshot.scroll_position();
882 let start_row = layout.visible_display_row_range.start;
883 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
884 let line_end_overshoot = 0.15 * layout.position_map.line_height;
885 let whitespace_setting = self
886 .editor
887 .read(cx)
888 .buffer
889 .read(cx)
890 .settings_at(0, cx)
891 .show_whitespaces;
892
893 cx.with_content_mask(
894 Some(ContentMask {
895 bounds: text_bounds,
896 }),
897 |cx| {
898 if text_bounds.contains_point(&cx.mouse_position()) {
899 if self
900 .editor
901 .read(cx)
902 .link_go_to_definition_state
903 .definitions
904 .is_empty()
905 {
906 cx.set_cursor_style(CursorStyle::IBeam);
907 } else {
908 cx.set_cursor_style(CursorStyle::PointingHand);
909 }
910 }
911
912 let fold_corner_radius = 0.15 * layout.position_map.line_height;
913 cx.with_element_id(Some("folds"), |cx| {
914 let snapshot = &layout.position_map.snapshot;
915 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
916 let fold_range = fold.range.clone();
917 let display_range = fold.range.start.to_display_point(&snapshot)
918 ..fold.range.end.to_display_point(&snapshot);
919 debug_assert_eq!(display_range.start.row(), display_range.end.row());
920 let row = display_range.start.row();
921
922 let line_layout = &layout.position_map.line_layouts
923 [(row - layout.visible_display_row_range.start) as usize]
924 .line;
925 let start_x = content_origin.x
926 + line_layout.x_for_index(display_range.start.column() as usize)
927 - layout.position_map.scroll_position.x;
928 let start_y = content_origin.y
929 + row as f32 * layout.position_map.line_height
930 - layout.position_map.scroll_position.y;
931 let end_x = content_origin.x
932 + line_layout.x_for_index(display_range.end.column() as usize)
933 - layout.position_map.scroll_position.x;
934
935 let fold_bounds = Bounds {
936 origin: point(start_x, start_y),
937 size: size(end_x - start_x, layout.position_map.line_height),
938 };
939
940 let fold_background = cx.with_z_index(1, |cx| {
941 div()
942 .id(fold.id)
943 .size_full()
944 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
945 .on_click(cx.listener_for(
946 &self.editor,
947 move |editor: &mut Editor, _, cx| {
948 editor.unfold_ranges(
949 [fold_range.start..fold_range.end],
950 true,
951 false,
952 cx,
953 );
954 cx.stop_propagation();
955 },
956 ))
957 .draw(
958 fold_bounds.origin,
959 fold_bounds.size,
960 cx,
961 |fold_element_state, cx| {
962 if fold_element_state.is_active() {
963 gpui::blue()
964 } else if fold_bounds.contains_point(&cx.mouse_position()) {
965 gpui::black()
966 } else {
967 gpui::red()
968 }
969 },
970 )
971 });
972
973 self.paint_highlighted_range(
974 display_range.clone(),
975 fold_background,
976 fold_corner_radius,
977 fold_corner_radius * 2.,
978 layout,
979 content_origin,
980 text_bounds,
981 cx,
982 );
983 }
984 });
985
986 for (range, color) in &layout.highlighted_ranges {
987 self.paint_highlighted_range(
988 range.clone(),
989 *color,
990 Pixels::ZERO,
991 line_end_overshoot,
992 layout,
993 content_origin,
994 text_bounds,
995 cx,
996 );
997 }
998
999 let mut cursors = SmallVec::<[Cursor; 32]>::new();
1000 let corner_radius = 0.15 * layout.position_map.line_height;
1001 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
1002
1003 for (selection_style, selections) in &layout.selections {
1004 for selection in selections {
1005 self.paint_highlighted_range(
1006 selection.range.clone(),
1007 selection_style.selection,
1008 corner_radius,
1009 corner_radius * 2.,
1010 layout,
1011 content_origin,
1012 text_bounds,
1013 cx,
1014 );
1015
1016 if selection.is_local && !selection.range.is_empty() {
1017 invisible_display_ranges.push(selection.range.clone());
1018 }
1019
1020 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
1021 let cursor_position = selection.head;
1022 if layout
1023 .visible_display_row_range
1024 .contains(&cursor_position.row())
1025 {
1026 let cursor_row_layout = &layout.position_map.line_layouts
1027 [(cursor_position.row() - start_row) as usize]
1028 .line;
1029 let cursor_column = cursor_position.column() as usize;
1030
1031 let cursor_character_x =
1032 cursor_row_layout.x_for_index(cursor_column);
1033 let mut block_width = cursor_row_layout
1034 .x_for_index(cursor_column + 1)
1035 - cursor_character_x;
1036 if block_width == Pixels::ZERO {
1037 block_width = layout.position_map.em_width;
1038 }
1039 let block_text = if let CursorShape::Block = selection.cursor_shape
1040 {
1041 layout
1042 .position_map
1043 .snapshot
1044 .chars_at(cursor_position)
1045 .next()
1046 .and_then(|(character, _)| {
1047 let text = SharedString::from(character.to_string());
1048 let len = text.len();
1049 cx.text_system()
1050 .shape_line(
1051 text,
1052 cursor_row_layout.font_size,
1053 &[TextRun {
1054 len,
1055 font: self.style.text.font(),
1056 color: self.style.background,
1057 background_color: None,
1058 underline: None,
1059 }],
1060 )
1061 .log_err()
1062 })
1063 } else {
1064 None
1065 };
1066
1067 let x = cursor_character_x - layout.position_map.scroll_position.x;
1068 let y = cursor_position.row() as f32
1069 * layout.position_map.line_height
1070 - layout.position_map.scroll_position.y;
1071 if selection.is_newest {
1072 self.editor.update(cx, |editor, _| {
1073 editor.pixel_position_of_newest_cursor = Some(point(
1074 text_bounds.origin.x + x + block_width / 2.,
1075 text_bounds.origin.y
1076 + y
1077 + layout.position_map.line_height / 2.,
1078 ))
1079 });
1080 }
1081 cursors.push(Cursor {
1082 color: selection_style.cursor,
1083 block_width,
1084 origin: point(x, y),
1085 line_height: layout.position_map.line_height,
1086 shape: selection.cursor_shape,
1087 block_text,
1088 });
1089 }
1090 }
1091 }
1092 }
1093
1094 for (ix, line_with_invisibles) in
1095 layout.position_map.line_layouts.iter().enumerate()
1096 {
1097 let row = start_row + ix as u32;
1098 line_with_invisibles.draw(
1099 layout,
1100 row,
1101 content_origin,
1102 whitespace_setting,
1103 &invisible_display_ranges,
1104 cx,
1105 )
1106 }
1107
1108 cx.with_z_index(0, |cx| {
1109 for cursor in cursors {
1110 cursor.paint(content_origin, cx);
1111 }
1112 });
1113
1114 cx.with_z_index(1, |cx| {
1115 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1116 let available_space =
1117 size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1118 let context_menu_size = context_menu.measure(available_space, cx);
1119
1120 let cursor_row_layout = &layout.position_map.line_layouts
1121 [(position.row() - start_row) as usize]
1122 .line;
1123 let x = cursor_row_layout.x_for_index(position.column() as usize)
1124 - layout.position_map.scroll_position.x;
1125 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1126 - layout.position_map.scroll_position.y;
1127 let mut list_origin = content_origin + point(x, y);
1128 let list_width = context_menu_size.width;
1129 let list_height = context_menu_size.height;
1130
1131 // Snap the right edge of the list to the right edge of the window if
1132 // its horizontal bounds overflow.
1133 if list_origin.x + list_width > cx.viewport_size().width {
1134 list_origin.x =
1135 (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1136 }
1137
1138 if list_origin.y + list_height > text_bounds.lower_right().y {
1139 list_origin.y -= layout.position_map.line_height + list_height;
1140 }
1141
1142 cx.break_content_mask(|cx| {
1143 context_menu.draw(list_origin, available_space, cx)
1144 });
1145 }
1146
1147 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1148 let available_space =
1149 size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1150
1151 // This is safe because we check on layout whether the required row is available
1152 let hovered_row_layout = &layout.position_map.line_layouts
1153 [(position.row() - start_row) as usize]
1154 .line;
1155
1156 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1157 // height. This is the size we will use to decide whether to render popovers above or below
1158 // the hovered line.
1159 let first_size = hover_popovers[0].measure(available_space, cx);
1160 let height_to_reserve = first_size.height
1161 + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1162
1163 // Compute Hovered Point
1164 let x = hovered_row_layout.x_for_index(position.column() as usize)
1165 - layout.position_map.scroll_position.x;
1166 let y = position.row() as f32 * layout.position_map.line_height
1167 - layout.position_map.scroll_position.y;
1168 let hovered_point = content_origin + point(x, y);
1169
1170 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1171 // There is enough space above. Render popovers above the hovered point
1172 let mut current_y = hovered_point.y;
1173 for mut hover_popover in hover_popovers {
1174 let size = hover_popover.measure(available_space, cx);
1175 let mut popover_origin =
1176 point(hovered_point.x, current_y - size.height);
1177
1178 let x_out_of_bounds =
1179 text_bounds.upper_right().x - (popover_origin.x + size.width);
1180 if x_out_of_bounds < Pixels::ZERO {
1181 popover_origin.x = popover_origin.x + x_out_of_bounds;
1182 }
1183
1184 cx.break_content_mask(|cx| {
1185 hover_popover.draw(popover_origin, available_space, cx)
1186 });
1187
1188 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1189 }
1190 } else {
1191 // There is not enough space above. Render popovers below the hovered point
1192 let mut current_y = hovered_point.y + layout.position_map.line_height;
1193 for mut hover_popover in hover_popovers {
1194 let size = hover_popover.measure(available_space, cx);
1195 let mut popover_origin = point(hovered_point.x, current_y);
1196
1197 let x_out_of_bounds =
1198 text_bounds.upper_right().x - (popover_origin.x + size.width);
1199 if x_out_of_bounds < Pixels::ZERO {
1200 popover_origin.x = popover_origin.x + x_out_of_bounds;
1201 }
1202
1203 hover_popover.draw(popover_origin, available_space, cx);
1204
1205 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1206 }
1207 }
1208 }
1209
1210 if let Some(mouse_context_menu) =
1211 self.editor.read(cx).mouse_context_menu.as_ref()
1212 {
1213 let element = overlay()
1214 .position(mouse_context_menu.position)
1215 .child(mouse_context_menu.context_menu.clone())
1216 .anchor(AnchorCorner::TopLeft)
1217 .snap_to_window();
1218 element.draw(
1219 gpui::Point::default(),
1220 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1221 cx,
1222 |_, _| {},
1223 );
1224 }
1225 })
1226 },
1227 )
1228 }
1229
1230 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1231 bounds.upper_right().x - self.style.scrollbar_width
1232 }
1233
1234 fn paint_scrollbar(
1235 &mut self,
1236 bounds: Bounds<Pixels>,
1237 layout: &mut LayoutState,
1238 cx: &mut WindowContext,
1239 ) {
1240 if layout.mode != EditorMode::Full {
1241 return;
1242 }
1243
1244 let top = bounds.origin.y;
1245 let bottom = bounds.lower_left().y;
1246 let right = bounds.lower_right().x;
1247 let left = self.scrollbar_left(&bounds);
1248 let row_range = &layout.scrollbar_row_range;
1249 let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1250
1251 let mut height = bounds.size.height;
1252 let mut first_row_y_offset = px(0.0);
1253
1254 // Impose a minimum height on the scrollbar thumb
1255 let row_height = height / max_row;
1256 let min_thumb_height = layout.position_map.line_height;
1257 let thumb_height = (row_range.end - row_range.start) * row_height;
1258 if thumb_height < min_thumb_height {
1259 first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1260 height -= min_thumb_height - thumb_height;
1261 }
1262
1263 let y_for_row = |row: f32| -> Pixels { top + first_row_y_offset + row * row_height };
1264
1265 let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1266 let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1267 let track_bounds = Bounds::from_corners(point(left, top), point(right, bottom));
1268 let thumb_bounds = Bounds::from_corners(point(left, thumb_top), point(right, thumb_bottom));
1269
1270 if layout.show_scrollbars {
1271 cx.paint_quad(
1272 track_bounds,
1273 Corners::default(),
1274 gpui::blue(), // todo!("style.track.background_color")
1275 Edges::default(), // todo!("style.track.border")
1276 transparent_black(), // todo!("style.track.border")
1277 );
1278 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1279 if layout.is_singleton && scrollbar_settings.selections {
1280 let start_anchor = Anchor::min();
1281 let end_anchor = Anchor::max();
1282 let background_ranges = self
1283 .editor
1284 .read(cx)
1285 .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1286 start_anchor..end_anchor,
1287 &layout.position_map.snapshot,
1288 50000,
1289 );
1290 for range in background_ranges {
1291 let start_y = y_for_row(range.start().row() as f32);
1292 let mut end_y = y_for_row(range.end().row() as f32);
1293 if end_y - start_y < px(1.) {
1294 end_y = start_y + px(1.);
1295 }
1296 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1297 cx.paint_quad(
1298 bounds,
1299 Corners::default(),
1300 gpui::yellow(), // todo!("theme.editor.scrollbar")
1301 Edges {
1302 top: Pixels::ZERO,
1303 right: px(1.),
1304 bottom: Pixels::ZERO,
1305 left: px(1.),
1306 },
1307 gpui::green(), // todo!("style.thumb.border.color")
1308 );
1309 }
1310 }
1311
1312 if layout.is_singleton && scrollbar_settings.git_diff {
1313 for hunk in layout
1314 .position_map
1315 .snapshot
1316 .buffer_snapshot
1317 .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1318 {
1319 let start_display = Point::new(hunk.buffer_range.start, 0)
1320 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1321 let end_display = Point::new(hunk.buffer_range.end, 0)
1322 .to_display_point(&layout.position_map.snapshot.display_snapshot);
1323 let start_y = y_for_row(start_display.row() as f32);
1324 let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1325 y_for_row((end_display.row() + 1) as f32)
1326 } else {
1327 y_for_row((end_display.row()) as f32)
1328 };
1329
1330 if end_y - start_y < px(1.) {
1331 end_y = start_y + px(1.);
1332 }
1333 let bounds = Bounds::from_corners(point(left, start_y), point(right, end_y));
1334
1335 let color = match hunk.status() {
1336 DiffHunkStatus::Added => gpui::green(), // todo!("use the right color")
1337 DiffHunkStatus::Modified => gpui::yellow(), // todo!("use the right color")
1338 DiffHunkStatus::Removed => gpui::red(), // todo!("use the right color")
1339 };
1340 cx.paint_quad(
1341 bounds,
1342 Corners::default(),
1343 color,
1344 Edges {
1345 top: Pixels::ZERO,
1346 right: px(1.),
1347 bottom: Pixels::ZERO,
1348 left: px(1.),
1349 },
1350 gpui::green(), // todo!("style.thumb.border.color")
1351 );
1352 }
1353 }
1354
1355 cx.paint_quad(
1356 thumb_bounds,
1357 Corners::default(),
1358 gpui::black(), // todo!("style.thumb.background_color")
1359 Edges {
1360 top: Pixels::ZERO,
1361 right: px(1.),
1362 bottom: Pixels::ZERO,
1363 left: px(1.),
1364 },
1365 gpui::green(), // todo!("style.thumb.border.color")
1366 );
1367 }
1368
1369 // cx.scene().push_cursor_region(CursorRegion {
1370 // bounds: track_bounds,
1371 // style: CursorStyle::Arrow,
1372 // });
1373 // let region_id = cx.view_id();
1374 // cx.scene().push_mouse_region(
1375 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1376 // .on_move(move |event, editor: &mut Editor, cx| {
1377 // if event.pressed_button.is_none() {
1378 // editor.scroll_manager.show_scrollbar(cx);
1379 // }
1380 // })
1381 // .on_down(MouseButton::Left, {
1382 // let row_range = row_range.clone();
1383 // move |event, editor: &mut Editor, cx| {
1384 // let y = event.position.y;
1385 // if y < thumb_top || thumb_bottom < y {
1386 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1387 // let top_row = center_row
1388 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1389 // let mut position = editor.scroll_position(cx);
1390 // position.set_y(top_row as f32);
1391 // editor.set_scroll_position(position, cx);
1392 // } else {
1393 // editor.scroll_manager.show_scrollbar(cx);
1394 // }
1395 // }
1396 // })
1397 // .on_drag(MouseButton::Left, {
1398 // move |event, editor: &mut Editor, cx| {
1399 // if event.end {
1400 // return;
1401 // }
1402
1403 // let y = event.prev_mouse_position.y;
1404 // let new_y = event.position.y;
1405 // if thumb_top < y && y < thumb_bottom {
1406 // let mut position = editor.scroll_position(cx);
1407 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1408 // if position.y < 0.0 {
1409 // position.set_y(0.);
1410 // }
1411 // editor.set_scroll_position(position, cx);
1412 // }
1413 // }
1414 // }),
1415 // );
1416 }
1417
1418 #[allow(clippy::too_many_arguments)]
1419 fn paint_highlighted_range(
1420 &self,
1421 range: Range<DisplayPoint>,
1422 color: Hsla,
1423 corner_radius: Pixels,
1424 line_end_overshoot: Pixels,
1425 layout: &LayoutState,
1426 content_origin: gpui::Point<Pixels>,
1427 bounds: Bounds<Pixels>,
1428 cx: &mut WindowContext,
1429 ) {
1430 let start_row = layout.visible_display_row_range.start;
1431 let end_row = layout.visible_display_row_range.end;
1432 if range.start != range.end {
1433 let row_range = if range.end.column() == 0 {
1434 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1435 } else {
1436 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1437 };
1438
1439 let highlighted_range = HighlightedRange {
1440 color,
1441 line_height: layout.position_map.line_height,
1442 corner_radius,
1443 start_y: content_origin.y
1444 + row_range.start as f32 * layout.position_map.line_height
1445 - layout.position_map.scroll_position.y,
1446 lines: row_range
1447 .into_iter()
1448 .map(|row| {
1449 let line_layout =
1450 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1451 HighlightedRangeLine {
1452 start_x: if row == range.start.row() {
1453 content_origin.x
1454 + line_layout.x_for_index(range.start.column() as usize)
1455 - layout.position_map.scroll_position.x
1456 } else {
1457 content_origin.x - layout.position_map.scroll_position.x
1458 },
1459 end_x: if row == range.end.row() {
1460 content_origin.x
1461 + line_layout.x_for_index(range.end.column() as usize)
1462 - layout.position_map.scroll_position.x
1463 } else {
1464 content_origin.x + line_layout.width + line_end_overshoot
1465 - layout.position_map.scroll_position.x
1466 },
1467 }
1468 })
1469 .collect(),
1470 };
1471
1472 highlighted_range.paint(bounds, cx);
1473 }
1474 }
1475
1476 fn paint_blocks(
1477 &mut self,
1478 bounds: Bounds<Pixels>,
1479 layout: &mut LayoutState,
1480 cx: &mut WindowContext,
1481 ) {
1482 let scroll_position = layout.position_map.snapshot.scroll_position();
1483 let scroll_left = scroll_position.x * layout.position_map.em_width;
1484 let scroll_top = scroll_position.y * layout.position_map.line_height;
1485
1486 for block in layout.blocks.drain(..) {
1487 let mut origin = bounds.origin
1488 + point(
1489 Pixels::ZERO,
1490 block.row as f32 * layout.position_map.line_height - scroll_top,
1491 );
1492 if !matches!(block.style, BlockStyle::Sticky) {
1493 origin += point(-scroll_left, Pixels::ZERO);
1494 }
1495 block.element.draw(origin, block.available_space, cx);
1496 }
1497 }
1498
1499 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1500 let style = &self.style;
1501 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1502 let layout = cx
1503 .text_system()
1504 .shape_line(
1505 SharedString::from(" ".repeat(column)),
1506 font_size,
1507 &[TextRun {
1508 len: column,
1509 font: style.text.font(),
1510 color: Hsla::default(),
1511 background_color: None,
1512 underline: None,
1513 }],
1514 )
1515 .unwrap();
1516
1517 layout.width
1518 }
1519
1520 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1521 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1522 self.column_pixels(digit_count, cx)
1523 }
1524
1525 //Folds contained in a hunk are ignored apart from shrinking visual size
1526 //If a fold contains any hunks then that fold line is marked as modified
1527 fn layout_git_gutters(
1528 &self,
1529 display_rows: Range<u32>,
1530 snapshot: &EditorSnapshot,
1531 ) -> Vec<DisplayDiffHunk> {
1532 let buffer_snapshot = &snapshot.buffer_snapshot;
1533
1534 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1535 .to_point(snapshot)
1536 .row;
1537 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1538 .to_point(snapshot)
1539 .row;
1540
1541 buffer_snapshot
1542 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1543 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1544 .dedup()
1545 .collect()
1546 }
1547
1548 fn calculate_relative_line_numbers(
1549 &self,
1550 snapshot: &EditorSnapshot,
1551 rows: &Range<u32>,
1552 relative_to: Option<u32>,
1553 ) -> HashMap<u32, u32> {
1554 let mut relative_rows: HashMap<u32, u32> = Default::default();
1555 let Some(relative_to) = relative_to else {
1556 return relative_rows;
1557 };
1558
1559 let start = rows.start.min(relative_to);
1560 let end = rows.end.max(relative_to);
1561
1562 let buffer_rows = snapshot
1563 .buffer_rows(start)
1564 .take(1 + (end - start) as usize)
1565 .collect::<Vec<_>>();
1566
1567 let head_idx = relative_to - start;
1568 let mut delta = 1;
1569 let mut i = head_idx + 1;
1570 while i < buffer_rows.len() as u32 {
1571 if buffer_rows[i as usize].is_some() {
1572 if rows.contains(&(i + start)) {
1573 relative_rows.insert(i + start, delta);
1574 }
1575 delta += 1;
1576 }
1577 i += 1;
1578 }
1579 delta = 1;
1580 i = head_idx.min(buffer_rows.len() as u32 - 1);
1581 while i > 0 && buffer_rows[i as usize].is_none() {
1582 i -= 1;
1583 }
1584
1585 while i > 0 {
1586 i -= 1;
1587 if buffer_rows[i as usize].is_some() {
1588 if rows.contains(&(i + start)) {
1589 relative_rows.insert(i + start, delta);
1590 }
1591 delta += 1;
1592 }
1593 }
1594
1595 relative_rows
1596 }
1597
1598 fn shape_line_numbers(
1599 &self,
1600 rows: Range<u32>,
1601 active_rows: &BTreeMap<u32, bool>,
1602 newest_selection_head: DisplayPoint,
1603 is_singleton: bool,
1604 snapshot: &EditorSnapshot,
1605 cx: &ViewContext<Editor>,
1606 ) -> (
1607 Vec<Option<ShapedLine>>,
1608 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1609 ) {
1610 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1611 let include_line_numbers = snapshot.mode == EditorMode::Full;
1612 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1613 let mut fold_statuses = Vec::with_capacity(rows.len());
1614 let mut line_number = String::new();
1615 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1616 let relative_to = if is_relative {
1617 Some(newest_selection_head.row())
1618 } else {
1619 None
1620 };
1621
1622 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1623
1624 for (ix, row) in snapshot
1625 .buffer_rows(rows.start)
1626 .take((rows.end - rows.start) as usize)
1627 .enumerate()
1628 {
1629 let display_row = rows.start + ix as u32;
1630 let (active, color) = if active_rows.contains_key(&display_row) {
1631 (true, cx.theme().colors().editor_active_line_number)
1632 } else {
1633 (false, cx.theme().colors().editor_line_number)
1634 };
1635 if let Some(buffer_row) = row {
1636 if include_line_numbers {
1637 line_number.clear();
1638 let default_number = buffer_row + 1;
1639 let number = relative_rows
1640 .get(&(ix as u32 + rows.start))
1641 .unwrap_or(&default_number);
1642 write!(&mut line_number, "{}", number).unwrap();
1643 let run = TextRun {
1644 len: line_number.len(),
1645 font: self.style.text.font(),
1646 color,
1647 background_color: None,
1648 underline: None,
1649 };
1650 let shaped_line = cx
1651 .text_system()
1652 .shape_line(line_number.clone().into(), font_size, &[run])
1653 .unwrap();
1654 shaped_line_numbers.push(Some(shaped_line));
1655 fold_statuses.push(
1656 is_singleton
1657 .then(|| {
1658 snapshot
1659 .fold_for_line(buffer_row)
1660 .map(|fold_status| (fold_status, buffer_row, active))
1661 })
1662 .flatten(),
1663 )
1664 }
1665 } else {
1666 fold_statuses.push(None);
1667 shaped_line_numbers.push(None);
1668 }
1669 }
1670
1671 (shaped_line_numbers, fold_statuses)
1672 }
1673
1674 fn layout_lines(
1675 &self,
1676 rows: Range<u32>,
1677 line_number_layouts: &[Option<ShapedLine>],
1678 snapshot: &EditorSnapshot,
1679 cx: &ViewContext<Editor>,
1680 ) -> Vec<LineWithInvisibles> {
1681 if rows.start >= rows.end {
1682 return Vec::new();
1683 }
1684
1685 // When the editor is empty and unfocused, then show the placeholder.
1686 if snapshot.is_empty() {
1687 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1688 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1689 let placeholder_text = snapshot.placeholder_text();
1690 let placeholder_lines = placeholder_text
1691 .as_ref()
1692 .map_or("", AsRef::as_ref)
1693 .split('\n')
1694 .skip(rows.start as usize)
1695 .chain(iter::repeat(""))
1696 .take(rows.len());
1697 placeholder_lines
1698 .filter_map(move |line| {
1699 let run = TextRun {
1700 len: line.len(),
1701 font: self.style.text.font(),
1702 color: placeholder_color,
1703 background_color: None,
1704 underline: Default::default(),
1705 };
1706 cx.text_system()
1707 .shape_line(line.to_string().into(), font_size, &[run])
1708 .log_err()
1709 })
1710 .map(|line| LineWithInvisibles {
1711 line,
1712 invisibles: Vec::new(),
1713 })
1714 .collect()
1715 } else {
1716 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1717 LineWithInvisibles::from_chunks(
1718 chunks,
1719 &self.style.text,
1720 MAX_LINE_LEN,
1721 rows.len() as usize,
1722 line_number_layouts,
1723 snapshot.mode,
1724 cx,
1725 )
1726 }
1727 }
1728
1729 fn compute_layout(
1730 &mut self,
1731 mut bounds: Bounds<Pixels>,
1732 cx: &mut WindowContext,
1733 ) -> LayoutState {
1734 self.editor.update(cx, |editor, cx| {
1735 let snapshot = editor.snapshot(cx);
1736 let style = self.style.clone();
1737
1738 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1739 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1740 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1741 let em_width = cx
1742 .text_system()
1743 .typographic_bounds(font_id, font_size, 'm')
1744 .unwrap()
1745 .size
1746 .width;
1747 let em_advance = cx
1748 .text_system()
1749 .advance(font_id, font_size, 'm')
1750 .unwrap()
1751 .width;
1752
1753 let gutter_padding;
1754 let gutter_width;
1755 let gutter_margin;
1756 if snapshot.show_gutter {
1757 let descent = cx.text_system().descent(font_id, font_size);
1758
1759 let gutter_padding_factor = 3.5;
1760 gutter_padding = (em_width * gutter_padding_factor).round();
1761 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1762 gutter_margin = -descent;
1763 } else {
1764 gutter_padding = Pixels::ZERO;
1765 gutter_width = Pixels::ZERO;
1766 gutter_margin = Pixels::ZERO;
1767 };
1768
1769 editor.gutter_width = gutter_width;
1770
1771 let text_width = bounds.size.width - gutter_width;
1772 let overscroll = size(em_width, px(0.));
1773 let snapshot = {
1774 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1775
1776 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1777 let wrap_width = match editor.soft_wrap_mode(cx) {
1778 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1779 SoftWrap::EditorWidth => editor_width,
1780 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1781 };
1782
1783 if editor.set_wrap_width(Some(wrap_width), cx) {
1784 editor.snapshot(cx)
1785 } else {
1786 snapshot
1787 }
1788 };
1789
1790 let wrap_guides = editor
1791 .wrap_guides(cx)
1792 .iter()
1793 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1794 .collect::<SmallVec<[_; 2]>>();
1795
1796 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1797 let gutter_size = size(gutter_width, bounds.size.height);
1798 let text_size = size(text_width, bounds.size.height);
1799
1800 let autoscroll_horizontally =
1801 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1802 let mut snapshot = editor.snapshot(cx);
1803
1804 let scroll_position = snapshot.scroll_position();
1805 // The scroll position is a fractional point, the whole number of which represents
1806 // the top of the window in terms of display rows.
1807 let start_row = scroll_position.y as u32;
1808 let height_in_lines = f32::from(bounds.size.height / line_height);
1809 let max_row = snapshot.max_point().row();
1810
1811 // Add 1 to ensure selections bleed off screen
1812 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1813
1814 let start_anchor = if start_row == 0 {
1815 Anchor::min()
1816 } else {
1817 snapshot
1818 .buffer_snapshot
1819 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1820 };
1821 let end_anchor = if end_row > max_row {
1822 Anchor::max()
1823 } else {
1824 snapshot
1825 .buffer_snapshot
1826 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1827 };
1828
1829 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1830 let mut active_rows = BTreeMap::new();
1831 let is_singleton = editor.is_singleton(cx);
1832
1833 let highlighted_rows = editor.highlighted_rows();
1834 let highlighted_ranges = editor.background_highlights_in_range(
1835 start_anchor..end_anchor,
1836 &snapshot.display_snapshot,
1837 cx.theme().colors(),
1838 );
1839
1840 let mut newest_selection_head = None;
1841
1842 if editor.show_local_selections {
1843 let mut local_selections: Vec<Selection<Point>> = editor
1844 .selections
1845 .disjoint_in_range(start_anchor..end_anchor, cx);
1846 local_selections.extend(editor.selections.pending(cx));
1847 let mut layouts = Vec::new();
1848 let newest = editor.selections.newest(cx);
1849 for selection in local_selections.drain(..) {
1850 let is_empty = selection.start == selection.end;
1851 let is_newest = selection == newest;
1852
1853 let layout = SelectionLayout::new(
1854 selection,
1855 editor.selections.line_mode,
1856 editor.cursor_shape,
1857 &snapshot.display_snapshot,
1858 is_newest,
1859 true,
1860 );
1861 if is_newest {
1862 newest_selection_head = Some(layout.head);
1863 }
1864
1865 for row in cmp::max(layout.active_rows.start, start_row)
1866 ..=cmp::min(layout.active_rows.end, end_row)
1867 {
1868 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1869 *contains_non_empty_selection |= !is_empty;
1870 }
1871 layouts.push(layout);
1872 }
1873
1874 selections.push((style.local_player, layouts));
1875 }
1876
1877 if let Some(collaboration_hub) = &editor.collaboration_hub {
1878 // When following someone, render the local selections in their color.
1879 if let Some(leader_id) = editor.leader_peer_id {
1880 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1881 if let Some(participant_index) = collaboration_hub
1882 .user_participant_indices(cx)
1883 .get(&collaborator.user_id)
1884 {
1885 if let Some((local_selection_style, _)) = selections.first_mut() {
1886 *local_selection_style = cx
1887 .theme()
1888 .players()
1889 .color_for_participant(participant_index.0);
1890 }
1891 }
1892 }
1893 }
1894
1895 let mut remote_selections = HashMap::default();
1896 for selection in snapshot.remote_selections_in_range(
1897 &(start_anchor..end_anchor),
1898 collaboration_hub.as_ref(),
1899 cx,
1900 ) {
1901 let selection_style = if let Some(participant_index) = selection.participant_index {
1902 cx.theme()
1903 .players()
1904 .color_for_participant(participant_index.0)
1905 } else {
1906 cx.theme().players().absent()
1907 };
1908
1909 // Don't re-render the leader's selections, since the local selections
1910 // match theirs.
1911 if Some(selection.peer_id) == editor.leader_peer_id {
1912 continue;
1913 }
1914
1915 remote_selections
1916 .entry(selection.replica_id)
1917 .or_insert((selection_style, Vec::new()))
1918 .1
1919 .push(SelectionLayout::new(
1920 selection.selection,
1921 selection.line_mode,
1922 selection.cursor_shape,
1923 &snapshot.display_snapshot,
1924 false,
1925 false,
1926 ));
1927 }
1928
1929 selections.extend(remote_selections.into_values());
1930 }
1931
1932 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1933 let show_scrollbars = match scrollbar_settings.show {
1934 ShowScrollbar::Auto => {
1935 // Git
1936 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1937 ||
1938 // Selections
1939 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1940 // Scrollmanager
1941 || editor.scroll_manager.scrollbars_visible()
1942 }
1943 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1944 ShowScrollbar::Always => true,
1945 ShowScrollbar::Never => false,
1946 };
1947
1948 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1949 let newest = editor.selections.newest::<Point>(cx);
1950 SelectionLayout::new(
1951 newest,
1952 editor.selections.line_mode,
1953 editor.cursor_shape,
1954 &snapshot.display_snapshot,
1955 true,
1956 true,
1957 )
1958 .head
1959 });
1960
1961 let (line_numbers, fold_statuses) = self.shape_line_numbers(
1962 start_row..end_row,
1963 &active_rows,
1964 head_for_relative,
1965 is_singleton,
1966 &snapshot,
1967 cx,
1968 );
1969
1970 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1971
1972 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1973
1974 let mut max_visible_line_width = Pixels::ZERO;
1975 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
1976 for line_with_invisibles in &line_layouts {
1977 if line_with_invisibles.line.width > max_visible_line_width {
1978 max_visible_line_width = line_with_invisibles.line.width;
1979 }
1980 }
1981
1982 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1983 .unwrap()
1984 .width;
1985 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1986
1987 let (scroll_width, blocks) = cx.with_element_id(Some("editor_blocks"), |cx| {
1988 self.layout_blocks(
1989 start_row..end_row,
1990 &snapshot,
1991 bounds.size.width,
1992 scroll_width,
1993 gutter_padding,
1994 gutter_width,
1995 em_width,
1996 gutter_width + gutter_margin,
1997 line_height,
1998 &style,
1999 &line_layouts,
2000 editor,
2001 cx,
2002 )
2003 });
2004
2005 let scroll_max = point(
2006 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
2007 max_row as f32,
2008 );
2009
2010 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2011
2012 let autoscrolled = if autoscroll_horizontally {
2013 editor.autoscroll_horizontally(
2014 start_row,
2015 text_size.width,
2016 scroll_width,
2017 em_width,
2018 &line_layouts,
2019 cx,
2020 )
2021 } else {
2022 false
2023 };
2024
2025 if clamped || autoscrolled {
2026 snapshot = editor.snapshot(cx);
2027 }
2028
2029 let mut context_menu = None;
2030 let mut code_actions_indicator = None;
2031 if let Some(newest_selection_head) = newest_selection_head {
2032 if (start_row..end_row).contains(&newest_selection_head.row()) {
2033 if editor.context_menu_visible() {
2034 let max_height = (12. * line_height).min((bounds.size.height - line_height) / 2.);
2035 context_menu =
2036 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2037 }
2038
2039 let active = matches!(
2040 editor.context_menu.read().as_ref(),
2041 Some(crate::ContextMenu::CodeActions(_))
2042 );
2043
2044 code_actions_indicator = editor
2045 .render_code_actions_indicator(&style, active, cx)
2046 .map(|element| CodeActionsIndicator {
2047 row: newest_selection_head.row(),
2048 button: element,
2049 });
2050 }
2051 }
2052
2053 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2054 let max_size = size(
2055 (120. * em_width) // Default size
2056 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2057 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2058 (16. * line_height) // Default size
2059 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2060 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2061 );
2062
2063 let mut hover = editor.hover_state.render(
2064 &snapshot,
2065 &style,
2066 visible_rows,
2067 max_size,
2068 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2069 cx,
2070 );
2071
2072 let mut fold_indicators = cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2073 editor.render_fold_indicators(
2074 fold_statuses,
2075 &style,
2076 editor.gutter_hovered,
2077 line_height,
2078 gutter_margin,
2079 cx,
2080 )
2081 });
2082
2083 let invisible_symbol_font_size = font_size / 2.;
2084 let tab_invisible = cx
2085 .text_system()
2086 .shape_line(
2087 "→".into(),
2088 invisible_symbol_font_size,
2089 &[TextRun {
2090 len: "→".len(),
2091 font: self.style.text.font(),
2092 color: cx.theme().colors().editor_invisible,
2093 background_color: None,
2094 underline: None,
2095 }],
2096 )
2097 .unwrap();
2098 let space_invisible = cx
2099 .text_system()
2100 .shape_line(
2101 "•".into(),
2102 invisible_symbol_font_size,
2103 &[TextRun {
2104 len: "•".len(),
2105 font: self.style.text.font(),
2106 color: cx.theme().colors().editor_invisible,
2107 background_color: None,
2108 underline: None,
2109 }],
2110 )
2111 .unwrap();
2112
2113 LayoutState {
2114 mode: snapshot.mode,
2115 position_map: Arc::new(PositionMap {
2116 size: bounds.size,
2117 scroll_position: point(
2118 scroll_position.x * em_width,
2119 scroll_position.y * line_height,
2120 ),
2121 scroll_max,
2122 line_layouts,
2123 line_height,
2124 em_width,
2125 em_advance,
2126 snapshot,
2127 }),
2128 visible_anchor_range: start_anchor..end_anchor,
2129 visible_display_row_range: start_row..end_row,
2130 wrap_guides,
2131 gutter_size,
2132 gutter_padding,
2133 text_size,
2134 scrollbar_row_range,
2135 show_scrollbars,
2136 is_singleton,
2137 max_row,
2138 gutter_margin,
2139 active_rows,
2140 highlighted_rows,
2141 highlighted_ranges,
2142 line_numbers,
2143 display_hunks,
2144 blocks,
2145 selections,
2146 context_menu,
2147 code_actions_indicator,
2148 fold_indicators,
2149 tab_invisible,
2150 space_invisible,
2151 hover_popovers: hover,
2152 }
2153 })
2154 }
2155
2156 #[allow(clippy::too_many_arguments)]
2157 fn layout_blocks(
2158 &self,
2159 rows: Range<u32>,
2160 snapshot: &EditorSnapshot,
2161 editor_width: Pixels,
2162 scroll_width: Pixels,
2163 gutter_padding: Pixels,
2164 gutter_width: Pixels,
2165 em_width: Pixels,
2166 text_x: Pixels,
2167 line_height: Pixels,
2168 style: &EditorStyle,
2169 line_layouts: &[LineWithInvisibles],
2170 editor: &mut Editor,
2171 cx: &mut ViewContext<Editor>,
2172 ) -> (Pixels, Vec<BlockLayout>) {
2173 let mut block_id = 0;
2174 let scroll_x = snapshot.scroll_anchor.offset.x;
2175 let (fixed_blocks, non_fixed_blocks) = snapshot
2176 .blocks_in_range(rows.clone())
2177 .partition::<Vec<_>, _>(|(_, block)| match block {
2178 TransformBlock::ExcerptHeader { .. } => false,
2179 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2180 });
2181
2182 let mut render_block = |block: &TransformBlock,
2183 available_space: Size<AvailableSpace>,
2184 block_id: usize,
2185 editor: &mut Editor,
2186 cx: &mut ViewContext<Editor>| {
2187 let mut element = match block {
2188 TransformBlock::Custom(block) => {
2189 let align_to = block
2190 .position()
2191 .to_point(&snapshot.buffer_snapshot)
2192 .to_display_point(snapshot);
2193 let anchor_x = text_x
2194 + if rows.contains(&align_to.row()) {
2195 line_layouts[(align_to.row() - rows.start) as usize]
2196 .line
2197 .x_for_index(align_to.column() as usize)
2198 } else {
2199 layout_line(align_to.row(), snapshot, style, cx)
2200 .unwrap()
2201 .x_for_index(align_to.column() as usize)
2202 };
2203
2204 block.render(&mut BlockContext {
2205 view_context: cx,
2206 anchor_x,
2207 gutter_padding,
2208 line_height,
2209 gutter_width,
2210 em_width,
2211 block_id,
2212 editor_style: &self.style,
2213 })
2214 }
2215
2216 TransformBlock::ExcerptHeader {
2217 buffer,
2218 range,
2219 starts_new_buffer,
2220 ..
2221 } => {
2222 let include_root = editor
2223 .project
2224 .as_ref()
2225 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2226 .unwrap_or_default();
2227
2228 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2229 let jump_path = ProjectPath {
2230 worktree_id: file.worktree_id(cx),
2231 path: file.path.clone(),
2232 };
2233 let jump_anchor = range
2234 .primary
2235 .as_ref()
2236 .map_or(range.context.start, |primary| primary.start);
2237 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2238
2239 let jump_handler = cx.listener_for(&self.editor, move |editor, e, cx| {
2240 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2241 });
2242
2243 jump_handler
2244 });
2245
2246 let element = if *starts_new_buffer {
2247 let path = buffer.resolve_file_path(cx, include_root);
2248 let mut filename = None;
2249 let mut parent_path = None;
2250 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2251 if let Some(path) = path {
2252 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2253 parent_path = path
2254 .parent()
2255 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2256 }
2257
2258 let is_open = true;
2259
2260 div().id("path header container").size_full().p_1p5().child(
2261 h_stack()
2262 .id("path header block")
2263 .py_1p5()
2264 .pl_3()
2265 .pr_2()
2266 .rounded_lg()
2267 .shadow_md()
2268 .border()
2269 .border_color(cx.theme().colors().border)
2270 .bg(cx.theme().colors().editor_subheader_background)
2271 .justify_between()
2272 .cursor_pointer()
2273 .hover(|style| style.bg(cx.theme().colors().element_hover))
2274 .on_click(cx.listener(|_editor, _event, _cx| {
2275 // TODO: Implement collapsing path headers
2276 todo!("Clicking path header")
2277 }))
2278 .child(
2279 h_stack()
2280 .gap_3()
2281 // TODO: Add open/close state and toggle action
2282 .child(
2283 div().border().border_color(gpui::red()).child(
2284 ButtonLike::new("path-header-disclosure-control")
2285 .style(ButtonStyle::Subtle)
2286 .child(IconElement::new(match is_open {
2287 true => Icon::ChevronDown,
2288 false => Icon::ChevronRight,
2289 })),
2290 ),
2291 )
2292 .child(
2293 h_stack()
2294 .gap_2()
2295 .child(Label::new(
2296 filename
2297 .map(SharedString::from)
2298 .unwrap_or_else(|| "untitled".into()),
2299 ))
2300 .when_some(parent_path, |then, path| {
2301 then.child(Label::new(path).color(Color::Muted))
2302 }),
2303 ),
2304 )
2305 .children(jump_handler.map(|jump_handler| {
2306 IconButton::new(block_id, Icon::ArrowUpRight)
2307 .style(ButtonStyle::Subtle)
2308 .on_click(jump_handler)
2309 .tooltip(|cx| {
2310 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2311 })
2312 })), // .p_x(gutter_padding)
2313 )
2314 } else {
2315 let text_style = style.text.clone();
2316 h_stack()
2317 .id("collapsed context")
2318 .size_full()
2319 .gap(gutter_padding)
2320 .child(
2321 h_stack()
2322 .justify_end()
2323 .flex_none()
2324 .w(gutter_width - gutter_padding)
2325 .h_full()
2326 .text_buffer(cx)
2327 .text_color(cx.theme().colors().editor_line_number)
2328 .child("..."),
2329 )
2330 .map(|this| {
2331 if let Some(jump_handler) = jump_handler {
2332 this.child(
2333 ButtonLike::new("jump to collapsed context")
2334 .style(ButtonStyle::Transparent)
2335 .full_width()
2336 .on_click(jump_handler)
2337 .tooltip(|cx| {
2338 Tooltip::for_action(
2339 "Jump to Buffer",
2340 &OpenExcerpts,
2341 cx,
2342 )
2343 })
2344 .child(
2345 div()
2346 .h_px()
2347 .w_full()
2348 .bg(cx.theme().colors().border_variant)
2349 .group_hover("", |style| {
2350 style.bg(cx.theme().colors().border)
2351 }),
2352 ),
2353 )
2354 } else {
2355 this.child(div().size_full().bg(gpui::green()))
2356 }
2357 })
2358 // .child("⋯")
2359 // .children(jump_icon) // .p_x(gutter_padding)
2360 };
2361 element.into_any()
2362 }
2363 };
2364
2365 let size = element.measure(available_space, cx);
2366 (element, size)
2367 };
2368
2369 let mut fixed_block_max_width = Pixels::ZERO;
2370 let mut blocks = Vec::new();
2371 for (row, block) in fixed_blocks {
2372 let available_space = size(
2373 AvailableSpace::MinContent,
2374 AvailableSpace::Definite(block.height() as f32 * line_height),
2375 );
2376 let (element, element_size) =
2377 render_block(block, available_space, block_id, editor, cx);
2378 block_id += 1;
2379 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2380 blocks.push(BlockLayout {
2381 row,
2382 element,
2383 available_space,
2384 style: BlockStyle::Fixed,
2385 });
2386 }
2387 for (row, block) in non_fixed_blocks {
2388 let style = match block {
2389 TransformBlock::Custom(block) => block.style(),
2390 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2391 };
2392 let width = match style {
2393 BlockStyle::Sticky => editor_width,
2394 BlockStyle::Flex => editor_width
2395 .max(fixed_block_max_width)
2396 .max(gutter_width + scroll_width),
2397 BlockStyle::Fixed => unreachable!(),
2398 };
2399 let available_space = size(
2400 AvailableSpace::Definite(width),
2401 AvailableSpace::Definite(block.height() as f32 * line_height),
2402 );
2403 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2404 block_id += 1;
2405 blocks.push(BlockLayout {
2406 row,
2407 element,
2408 available_space,
2409 style,
2410 });
2411 }
2412 (
2413 scroll_width.max(fixed_block_max_width - gutter_width),
2414 blocks,
2415 )
2416 }
2417
2418 fn paint_mouse_listeners(
2419 &mut self,
2420 bounds: Bounds<Pixels>,
2421 gutter_bounds: Bounds<Pixels>,
2422 text_bounds: Bounds<Pixels>,
2423 layout: &LayoutState,
2424 cx: &mut WindowContext,
2425 ) {
2426 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
2427 let interactive_bounds = InteractiveBounds {
2428 bounds: bounds.intersect(&cx.content_mask().bounds),
2429 stacking_order: cx.stacking_order().clone(),
2430 };
2431
2432 cx.on_mouse_event({
2433 let position_map = layout.position_map.clone();
2434 let editor = self.editor.clone();
2435 let interactive_bounds = interactive_bounds.clone();
2436
2437 move |event: &ScrollWheelEvent, phase, cx| {
2438 if phase != DispatchPhase::Bubble {
2439 return;
2440 }
2441
2442 editor.update(cx, |editor, cx| {
2443 Self::scroll(editor, event, &position_map, &interactive_bounds, cx)
2444 });
2445 }
2446 });
2447
2448 cx.on_mouse_event({
2449 let position_map = layout.position_map.clone();
2450 let editor = self.editor.clone();
2451 let stacking_order = cx.stacking_order().clone();
2452
2453 move |event: &MouseDownEvent, phase, cx| {
2454 if phase != DispatchPhase::Bubble {
2455 return;
2456 }
2457
2458 match event.button {
2459 MouseButton::Left => editor.update(cx, |editor, cx| {
2460 Self::mouse_left_down(
2461 editor,
2462 event,
2463 &position_map,
2464 text_bounds,
2465 gutter_bounds,
2466 &stacking_order,
2467 cx,
2468 )
2469 }),
2470 MouseButton::Right => editor.update(cx, |editor, cx| {
2471 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx)
2472 }),
2473 _ => {}
2474 };
2475 }
2476 });
2477
2478 cx.on_mouse_event({
2479 let position_map = layout.position_map.clone();
2480 let editor = self.editor.clone();
2481 let stacking_order = cx.stacking_order().clone();
2482
2483 move |event: &MouseUpEvent, phase, cx| {
2484 editor.update(cx, |editor, cx| {
2485 Self::mouse_up(
2486 editor,
2487 event,
2488 &position_map,
2489 text_bounds,
2490 &stacking_order,
2491 cx,
2492 )
2493 });
2494 }
2495 });
2496 cx.on_mouse_event({
2497 let position_map = layout.position_map.clone();
2498 let editor = self.editor.clone();
2499 let stacking_order = cx.stacking_order().clone();
2500
2501 move |event: &MouseMoveEvent, phase, cx| {
2502 if phase != DispatchPhase::Bubble {
2503 return;
2504 }
2505
2506 editor.update(cx, |editor, cx| {
2507 Self::mouse_moved(
2508 editor,
2509 event,
2510 &position_map,
2511 text_bounds,
2512 gutter_bounds,
2513 &stacking_order,
2514 cx,
2515 )
2516 });
2517 }
2518 });
2519 }
2520}
2521
2522#[derive(Debug)]
2523pub struct LineWithInvisibles {
2524 pub line: ShapedLine,
2525 invisibles: Vec<Invisible>,
2526}
2527
2528impl LineWithInvisibles {
2529 fn from_chunks<'a>(
2530 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2531 text_style: &TextStyle,
2532 max_line_len: usize,
2533 max_line_count: usize,
2534 line_number_layouts: &[Option<ShapedLine>],
2535 editor_mode: EditorMode,
2536 cx: &WindowContext,
2537 ) -> Vec<Self> {
2538 let mut layouts = Vec::with_capacity(max_line_count);
2539 let mut line = String::new();
2540 let mut invisibles = Vec::new();
2541 let mut styles = Vec::new();
2542 let mut non_whitespace_added = false;
2543 let mut row = 0;
2544 let mut line_exceeded_max_len = false;
2545 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2546
2547 for highlighted_chunk in chunks.chain([HighlightedChunk {
2548 chunk: "\n",
2549 style: None,
2550 is_tab: false,
2551 }]) {
2552 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2553 if ix > 0 {
2554 let shaped_line = cx
2555 .text_system()
2556 .shape_line(line.clone().into(), font_size, &styles)
2557 .unwrap();
2558 layouts.push(Self {
2559 line: shaped_line,
2560 invisibles: invisibles.drain(..).collect(),
2561 });
2562
2563 line.clear();
2564 styles.clear();
2565 row += 1;
2566 line_exceeded_max_len = false;
2567 non_whitespace_added = false;
2568 if row == max_line_count {
2569 return layouts;
2570 }
2571 }
2572
2573 if !line_chunk.is_empty() && !line_exceeded_max_len {
2574 let text_style = if let Some(style) = highlighted_chunk.style {
2575 Cow::Owned(text_style.clone().highlight(style))
2576 } else {
2577 Cow::Borrowed(text_style)
2578 };
2579
2580 if line.len() + line_chunk.len() > max_line_len {
2581 let mut chunk_len = max_line_len - line.len();
2582 while !line_chunk.is_char_boundary(chunk_len) {
2583 chunk_len -= 1;
2584 }
2585 line_chunk = &line_chunk[..chunk_len];
2586 line_exceeded_max_len = true;
2587 }
2588
2589 styles.push(TextRun {
2590 len: line_chunk.len(),
2591 font: text_style.font(),
2592 color: text_style.color,
2593 background_color: text_style.background_color,
2594 underline: text_style.underline,
2595 });
2596
2597 if editor_mode == EditorMode::Full {
2598 // Line wrap pads its contents with fake whitespaces,
2599 // avoid printing them
2600 let inside_wrapped_string = line_number_layouts
2601 .get(row)
2602 .and_then(|layout| layout.as_ref())
2603 .is_none();
2604 if highlighted_chunk.is_tab {
2605 if non_whitespace_added || !inside_wrapped_string {
2606 invisibles.push(Invisible::Tab {
2607 line_start_offset: line.len(),
2608 });
2609 }
2610 } else {
2611 invisibles.extend(
2612 line_chunk
2613 .chars()
2614 .enumerate()
2615 .filter(|(_, line_char)| {
2616 let is_whitespace = line_char.is_whitespace();
2617 non_whitespace_added |= !is_whitespace;
2618 is_whitespace
2619 && (non_whitespace_added || !inside_wrapped_string)
2620 })
2621 .map(|(whitespace_index, _)| Invisible::Whitespace {
2622 line_offset: line.len() + whitespace_index,
2623 }),
2624 )
2625 }
2626 }
2627
2628 line.push_str(line_chunk);
2629 }
2630 }
2631 }
2632
2633 layouts
2634 }
2635
2636 fn draw(
2637 &self,
2638 layout: &LayoutState,
2639 row: u32,
2640 content_origin: gpui::Point<Pixels>,
2641 whitespace_setting: ShowWhitespaceSetting,
2642 selection_ranges: &[Range<DisplayPoint>],
2643 cx: &mut WindowContext,
2644 ) {
2645 let line_height = layout.position_map.line_height;
2646 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2647
2648 self.line.paint(
2649 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2650 line_height,
2651 cx,
2652 );
2653
2654 self.draw_invisibles(
2655 &selection_ranges,
2656 layout,
2657 content_origin,
2658 line_y,
2659 row,
2660 line_height,
2661 whitespace_setting,
2662 cx,
2663 );
2664 }
2665
2666 fn draw_invisibles(
2667 &self,
2668 selection_ranges: &[Range<DisplayPoint>],
2669 layout: &LayoutState,
2670 content_origin: gpui::Point<Pixels>,
2671 line_y: Pixels,
2672 row: u32,
2673 line_height: Pixels,
2674 whitespace_setting: ShowWhitespaceSetting,
2675 cx: &mut WindowContext,
2676 ) {
2677 let allowed_invisibles_regions = match whitespace_setting {
2678 ShowWhitespaceSetting::None => return,
2679 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2680 ShowWhitespaceSetting::All => None,
2681 };
2682
2683 for invisible in &self.invisibles {
2684 let (&token_offset, invisible_symbol) = match invisible {
2685 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2686 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2687 };
2688
2689 let x_offset = self.line.x_for_index(token_offset);
2690 let invisible_offset =
2691 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2692 let origin = content_origin
2693 + gpui::point(
2694 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2695 line_y,
2696 );
2697
2698 if let Some(allowed_regions) = allowed_invisibles_regions {
2699 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2700 if !allowed_regions
2701 .iter()
2702 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2703 {
2704 continue;
2705 }
2706 }
2707 invisible_symbol.paint(origin, line_height, cx);
2708 }
2709 }
2710}
2711
2712#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2713enum Invisible {
2714 Tab { line_start_offset: usize },
2715 Whitespace { line_offset: usize },
2716}
2717
2718impl Element for EditorElement {
2719 type State = ();
2720
2721 fn layout(
2722 &mut self,
2723 element_state: Option<Self::State>,
2724 cx: &mut gpui::WindowContext,
2725 ) -> (gpui::LayoutId, Self::State) {
2726 self.editor.update(cx, |editor, cx| {
2727 editor.set_style(self.style.clone(), cx);
2728
2729 let layout_id = match editor.mode {
2730 EditorMode::SingleLine => {
2731 let rem_size = cx.rem_size();
2732 let mut style = Style::default();
2733 style.size.width = relative(1.).into();
2734 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2735 cx.request_layout(&style, None)
2736 }
2737 EditorMode::AutoHeight { max_lines } => {
2738 let editor_handle = cx.view().clone();
2739 let max_line_number_width =
2740 self.max_line_number_width(&editor.snapshot(cx), cx);
2741 cx.request_measured_layout(
2742 Style::default(),
2743 move |known_dimensions, available_space, cx| {
2744 editor_handle
2745 .update(cx, |editor, cx| {
2746 compute_auto_height_layout(
2747 editor,
2748 max_lines,
2749 max_line_number_width,
2750 known_dimensions,
2751 cx,
2752 )
2753 })
2754 .unwrap_or_default()
2755 },
2756 )
2757 }
2758 EditorMode::Full => {
2759 let mut style = Style::default();
2760 style.size.width = relative(1.).into();
2761 style.size.height = relative(1.).into();
2762 cx.request_layout(&style, None)
2763 }
2764 };
2765
2766 (layout_id, ())
2767 })
2768 }
2769
2770 fn paint(
2771 mut self,
2772 bounds: Bounds<gpui::Pixels>,
2773 element_state: &mut Self::State,
2774 cx: &mut gpui::WindowContext,
2775 ) {
2776 let editor = self.editor.clone();
2777
2778 let mut layout = self.compute_layout(bounds, cx);
2779 let gutter_bounds = Bounds {
2780 origin: bounds.origin,
2781 size: layout.gutter_size,
2782 };
2783 let text_bounds = Bounds {
2784 origin: gutter_bounds.upper_right(),
2785 size: layout.text_size,
2786 };
2787
2788 let focus_handle = editor.focus_handle(cx);
2789 let key_context = self.editor.read(cx).key_context(cx);
2790 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
2791 self.register_actions(cx);
2792 self.register_key_listeners(cx);
2793
2794 // We call with_z_index to establish a new stacking context.
2795 cx.with_z_index(0, |cx| {
2796 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2797 // Paint mouse listeners at z-index 0 so any elements we paint on top of the editor
2798 // take precedence.
2799 cx.with_z_index(0, |cx| {
2800 self.paint_mouse_listeners(bounds, gutter_bounds, text_bounds, &layout, cx);
2801 });
2802 let input_handler = ElementInputHandler::new(bounds, self.editor.clone(), cx);
2803 cx.handle_input(&focus_handle, input_handler);
2804
2805 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2806 if layout.gutter_size.width > Pixels::ZERO {
2807 self.paint_gutter(gutter_bounds, &mut layout, cx);
2808 }
2809 self.paint_text(text_bounds, &mut layout, cx);
2810
2811 if !layout.blocks.is_empty() {
2812 cx.with_z_index(1, |cx| {
2813 cx.with_element_id(Some("editor_blocks"), |cx| {
2814 self.paint_blocks(bounds, &mut layout, cx);
2815 });
2816 })
2817 }
2818
2819 self.paint_scrollbar(bounds, &mut layout, cx);
2820 });
2821 });
2822 })
2823 }
2824}
2825
2826impl IntoElement for EditorElement {
2827 type Element = Self;
2828
2829 fn element_id(&self) -> Option<gpui::ElementId> {
2830 self.editor.element_id()
2831 }
2832
2833 fn into_element(self) -> Self::Element {
2834 self
2835 }
2836}
2837
2838type BufferRow = u32;
2839
2840pub struct LayoutState {
2841 position_map: Arc<PositionMap>,
2842 gutter_size: Size<Pixels>,
2843 gutter_padding: Pixels,
2844 gutter_margin: Pixels,
2845 text_size: gpui::Size<Pixels>,
2846 mode: EditorMode,
2847 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
2848 visible_anchor_range: Range<Anchor>,
2849 visible_display_row_range: Range<u32>,
2850 active_rows: BTreeMap<u32, bool>,
2851 highlighted_rows: Option<Range<u32>>,
2852 line_numbers: Vec<Option<ShapedLine>>,
2853 display_hunks: Vec<DisplayDiffHunk>,
2854 blocks: Vec<BlockLayout>,
2855 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
2856 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
2857 scrollbar_row_range: Range<f32>,
2858 show_scrollbars: bool,
2859 is_singleton: bool,
2860 max_row: u32,
2861 context_menu: Option<(DisplayPoint, AnyElement)>,
2862 code_actions_indicator: Option<CodeActionsIndicator>,
2863 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
2864 fold_indicators: Vec<Option<IconButton>>,
2865 tab_invisible: ShapedLine,
2866 space_invisible: ShapedLine,
2867}
2868
2869struct CodeActionsIndicator {
2870 row: u32,
2871 button: IconButton,
2872}
2873
2874struct PositionMap {
2875 size: Size<Pixels>,
2876 line_height: Pixels,
2877 scroll_position: gpui::Point<Pixels>,
2878 scroll_max: gpui::Point<f32>,
2879 em_width: Pixels,
2880 em_advance: Pixels,
2881 line_layouts: Vec<LineWithInvisibles>,
2882 snapshot: EditorSnapshot,
2883}
2884
2885#[derive(Debug, Copy, Clone)]
2886pub struct PointForPosition {
2887 pub previous_valid: DisplayPoint,
2888 pub next_valid: DisplayPoint,
2889 pub exact_unclipped: DisplayPoint,
2890 pub column_overshoot_after_line_end: u32,
2891}
2892
2893impl PointForPosition {
2894 #[cfg(test)]
2895 pub fn valid(valid: DisplayPoint) -> Self {
2896 Self {
2897 previous_valid: valid,
2898 next_valid: valid,
2899 exact_unclipped: valid,
2900 column_overshoot_after_line_end: 0,
2901 }
2902 }
2903
2904 pub fn as_valid(&self) -> Option<DisplayPoint> {
2905 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
2906 Some(self.previous_valid)
2907 } else {
2908 None
2909 }
2910 }
2911}
2912
2913impl PositionMap {
2914 fn point_for_position(
2915 &self,
2916 text_bounds: Bounds<Pixels>,
2917 position: gpui::Point<Pixels>,
2918 ) -> PointForPosition {
2919 let scroll_position = self.snapshot.scroll_position();
2920 let position = position - text_bounds.origin;
2921 let y = position.y.max(px(0.)).min(self.size.width);
2922 let x = position.x + (scroll_position.x * self.em_width);
2923 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
2924
2925 let (column, x_overshoot_after_line_end) = if let Some(line) = self
2926 .line_layouts
2927 .get(row as usize - scroll_position.y as usize)
2928 .map(|&LineWithInvisibles { ref line, .. }| line)
2929 {
2930 if let Some(ix) = line.index_for_x(x) {
2931 (ix as u32, px(0.))
2932 } else {
2933 (line.len as u32, px(0.).max(x - line.width))
2934 }
2935 } else {
2936 (0, x)
2937 };
2938
2939 let mut exact_unclipped = DisplayPoint::new(row, column);
2940 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
2941 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
2942
2943 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
2944 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
2945 PointForPosition {
2946 previous_valid,
2947 next_valid,
2948 exact_unclipped,
2949 column_overshoot_after_line_end,
2950 }
2951 }
2952}
2953
2954struct BlockLayout {
2955 row: u32,
2956 element: AnyElement,
2957 available_space: Size<AvailableSpace>,
2958 style: BlockStyle,
2959}
2960
2961fn layout_line(
2962 row: u32,
2963 snapshot: &EditorSnapshot,
2964 style: &EditorStyle,
2965 cx: &WindowContext,
2966) -> Result<ShapedLine> {
2967 let mut line = snapshot.line(row);
2968
2969 if line.len() > MAX_LINE_LEN {
2970 let mut len = MAX_LINE_LEN;
2971 while !line.is_char_boundary(len) {
2972 len -= 1;
2973 }
2974
2975 line.truncate(len);
2976 }
2977
2978 cx.text_system().shape_line(
2979 line.into(),
2980 style.text.font_size.to_pixels(cx.rem_size()),
2981 &[TextRun {
2982 len: snapshot.line_len(row) as usize,
2983 font: style.text.font(),
2984 color: Hsla::default(),
2985 background_color: None,
2986 underline: None,
2987 }],
2988 )
2989}
2990
2991#[derive(Debug)]
2992pub struct Cursor {
2993 origin: gpui::Point<Pixels>,
2994 block_width: Pixels,
2995 line_height: Pixels,
2996 color: Hsla,
2997 shape: CursorShape,
2998 block_text: Option<ShapedLine>,
2999}
3000
3001impl Cursor {
3002 pub fn new(
3003 origin: gpui::Point<Pixels>,
3004 block_width: Pixels,
3005 line_height: Pixels,
3006 color: Hsla,
3007 shape: CursorShape,
3008 block_text: Option<ShapedLine>,
3009 ) -> Cursor {
3010 Cursor {
3011 origin,
3012 block_width,
3013 line_height,
3014 color,
3015 shape,
3016 block_text,
3017 }
3018 }
3019
3020 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3021 Bounds {
3022 origin: self.origin + origin,
3023 size: size(self.block_width, self.line_height),
3024 }
3025 }
3026
3027 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3028 let bounds = match self.shape {
3029 CursorShape::Bar => Bounds {
3030 origin: self.origin + origin,
3031 size: size(px(2.0), self.line_height),
3032 },
3033 CursorShape::Block | CursorShape::Hollow => Bounds {
3034 origin: self.origin + origin,
3035 size: size(self.block_width, self.line_height),
3036 },
3037 CursorShape::Underscore => Bounds {
3038 origin: self.origin
3039 + origin
3040 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3041 size: size(self.block_width, px(2.0)),
3042 },
3043 };
3044
3045 //Draw background or border quad
3046 if matches!(self.shape, CursorShape::Hollow) {
3047 cx.paint_quad(
3048 bounds,
3049 Corners::default(),
3050 transparent_black(),
3051 Edges::all(px(1.)),
3052 self.color,
3053 );
3054 } else {
3055 cx.paint_quad(
3056 bounds,
3057 Corners::default(),
3058 self.color,
3059 Edges::default(),
3060 transparent_black(),
3061 );
3062 }
3063
3064 if let Some(block_text) = &self.block_text {
3065 block_text.paint(self.origin + origin, self.line_height, cx);
3066 }
3067 }
3068
3069 pub fn shape(&self) -> CursorShape {
3070 self.shape
3071 }
3072}
3073
3074#[derive(Debug)]
3075pub struct HighlightedRange {
3076 pub start_y: Pixels,
3077 pub line_height: Pixels,
3078 pub lines: Vec<HighlightedRangeLine>,
3079 pub color: Hsla,
3080 pub corner_radius: Pixels,
3081}
3082
3083#[derive(Debug)]
3084pub struct HighlightedRangeLine {
3085 pub start_x: Pixels,
3086 pub end_x: Pixels,
3087}
3088
3089impl HighlightedRange {
3090 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3091 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3092 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3093 self.paint_lines(
3094 self.start_y + self.line_height,
3095 &self.lines[1..],
3096 bounds,
3097 cx,
3098 );
3099 } else {
3100 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3101 }
3102 }
3103
3104 fn paint_lines(
3105 &self,
3106 start_y: Pixels,
3107 lines: &[HighlightedRangeLine],
3108 bounds: Bounds<Pixels>,
3109 cx: &mut WindowContext,
3110 ) {
3111 if lines.is_empty() {
3112 return;
3113 }
3114
3115 let first_line = lines.first().unwrap();
3116 let last_line = lines.last().unwrap();
3117
3118 let first_top_left = point(first_line.start_x, start_y);
3119 let first_top_right = point(first_line.end_x, start_y);
3120
3121 let curve_height = point(Pixels::ZERO, self.corner_radius);
3122 let curve_width = |start_x: Pixels, end_x: Pixels| {
3123 let max = (end_x - start_x) / 2.;
3124 let width = if max < self.corner_radius {
3125 max
3126 } else {
3127 self.corner_radius
3128 };
3129
3130 point(width, Pixels::ZERO)
3131 };
3132
3133 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3134 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3135 path.curve_to(first_top_right + curve_height, first_top_right);
3136
3137 let mut iter = lines.iter().enumerate().peekable();
3138 while let Some((ix, line)) = iter.next() {
3139 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3140
3141 if let Some((_, next_line)) = iter.peek() {
3142 let next_top_right = point(next_line.end_x, bottom_right.y);
3143
3144 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3145 Ordering::Equal => {
3146 path.line_to(bottom_right);
3147 }
3148 Ordering::Less => {
3149 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3150 path.line_to(bottom_right - curve_height);
3151 if self.corner_radius > Pixels::ZERO {
3152 path.curve_to(bottom_right - curve_width, bottom_right);
3153 }
3154 path.line_to(next_top_right + curve_width);
3155 if self.corner_radius > Pixels::ZERO {
3156 path.curve_to(next_top_right + curve_height, next_top_right);
3157 }
3158 }
3159 Ordering::Greater => {
3160 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3161 path.line_to(bottom_right - curve_height);
3162 if self.corner_radius > Pixels::ZERO {
3163 path.curve_to(bottom_right + curve_width, bottom_right);
3164 }
3165 path.line_to(next_top_right - curve_width);
3166 if self.corner_radius > Pixels::ZERO {
3167 path.curve_to(next_top_right + curve_height, next_top_right);
3168 }
3169 }
3170 }
3171 } else {
3172 let curve_width = curve_width(line.start_x, line.end_x);
3173 path.line_to(bottom_right - curve_height);
3174 if self.corner_radius > Pixels::ZERO {
3175 path.curve_to(bottom_right - curve_width, bottom_right);
3176 }
3177
3178 let bottom_left = point(line.start_x, bottom_right.y);
3179 path.line_to(bottom_left + curve_width);
3180 if self.corner_radius > Pixels::ZERO {
3181 path.curve_to(bottom_left - curve_height, bottom_left);
3182 }
3183 }
3184 }
3185
3186 if first_line.start_x > last_line.start_x {
3187 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3188 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3189 path.line_to(second_top_left + curve_height);
3190 if self.corner_radius > Pixels::ZERO {
3191 path.curve_to(second_top_left + curve_width, second_top_left);
3192 }
3193 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3194 path.line_to(first_bottom_left - curve_width);
3195 if self.corner_radius > Pixels::ZERO {
3196 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3197 }
3198 }
3199
3200 path.line_to(first_top_left + curve_height);
3201 if self.corner_radius > Pixels::ZERO {
3202 path.curve_to(first_top_left + top_curve_width, first_top_left);
3203 }
3204 path.line_to(first_top_right - top_curve_width);
3205
3206 cx.paint_path(path, self.color);
3207 }
3208}
3209
3210pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3211 (delta.pow(1.5) / 100.0).into()
3212}
3213
3214fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3215 (delta.pow(1.2) / 300.0).into()
3216}
3217
3218#[cfg(test)]
3219mod tests {
3220 use super::*;
3221 use crate::{
3222 display_map::{BlockDisposition, BlockProperties},
3223 editor_tests::{init_test, update_test_language_settings},
3224 Editor, MultiBuffer,
3225 };
3226 use gpui::{EmptyView, TestAppContext};
3227 use language::language_settings;
3228 use log::info;
3229 use std::{num::NonZeroU32, sync::Arc};
3230 use util::test::sample_text;
3231
3232 #[gpui::test]
3233 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3234 init_test(cx, |_| {});
3235 let window = cx.add_window(|cx| {
3236 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3237 Editor::new(EditorMode::Full, buffer, None, cx)
3238 });
3239
3240 let editor = window.root(cx).unwrap();
3241 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3242 let element = EditorElement::new(&editor, style);
3243
3244 let layouts = window
3245 .update(cx, |editor, cx| {
3246 let snapshot = editor.snapshot(cx);
3247 element
3248 .shape_line_numbers(
3249 0..6,
3250 &Default::default(),
3251 DisplayPoint::new(0, 0),
3252 false,
3253 &snapshot,
3254 cx,
3255 )
3256 .0
3257 })
3258 .unwrap();
3259 assert_eq!(layouts.len(), 6);
3260
3261 let relative_rows = window
3262 .update(cx, |editor, cx| {
3263 let snapshot = editor.snapshot(cx);
3264 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3265 })
3266 .unwrap();
3267 assert_eq!(relative_rows[&0], 3);
3268 assert_eq!(relative_rows[&1], 2);
3269 assert_eq!(relative_rows[&2], 1);
3270 // current line has no relative number
3271 assert_eq!(relative_rows[&4], 1);
3272 assert_eq!(relative_rows[&5], 2);
3273
3274 // works if cursor is before screen
3275 let relative_rows = window
3276 .update(cx, |editor, cx| {
3277 let snapshot = editor.snapshot(cx);
3278
3279 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3280 })
3281 .unwrap();
3282 assert_eq!(relative_rows.len(), 3);
3283 assert_eq!(relative_rows[&3], 2);
3284 assert_eq!(relative_rows[&4], 3);
3285 assert_eq!(relative_rows[&5], 4);
3286
3287 // works if cursor is after screen
3288 let relative_rows = window
3289 .update(cx, |editor, cx| {
3290 let snapshot = editor.snapshot(cx);
3291
3292 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3293 })
3294 .unwrap();
3295 assert_eq!(relative_rows.len(), 3);
3296 assert_eq!(relative_rows[&0], 5);
3297 assert_eq!(relative_rows[&1], 4);
3298 assert_eq!(relative_rows[&2], 3);
3299 }
3300
3301 #[gpui::test]
3302 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3303 init_test(cx, |_| {});
3304
3305 let window = cx.add_window(|cx| {
3306 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3307 Editor::new(EditorMode::Full, buffer, None, cx)
3308 });
3309 let editor = window.root(cx).unwrap();
3310 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3311 let mut element = EditorElement::new(&editor, style);
3312
3313 window
3314 .update(cx, |editor, cx| {
3315 editor.cursor_shape = CursorShape::Block;
3316 editor.change_selections(None, cx, |s| {
3317 s.select_ranges([
3318 Point::new(0, 0)..Point::new(1, 0),
3319 Point::new(3, 2)..Point::new(3, 3),
3320 Point::new(5, 6)..Point::new(6, 0),
3321 ]);
3322 });
3323 })
3324 .unwrap();
3325 let state = cx
3326 .update_window(window.into(), |_, cx| {
3327 element.compute_layout(
3328 Bounds {
3329 origin: point(px(500.), px(500.)),
3330 size: size(px(500.), px(500.)),
3331 },
3332 cx,
3333 )
3334 })
3335 .unwrap();
3336
3337 assert_eq!(state.selections.len(), 1);
3338 let local_selections = &state.selections[0].1;
3339 assert_eq!(local_selections.len(), 3);
3340 // moves cursor back one line
3341 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3342 assert_eq!(
3343 local_selections[0].range,
3344 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3345 );
3346
3347 // moves cursor back one column
3348 assert_eq!(
3349 local_selections[1].range,
3350 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3351 );
3352 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3353
3354 // leaves cursor on the max point
3355 assert_eq!(
3356 local_selections[2].range,
3357 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3358 );
3359 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3360
3361 // active lines does not include 1 (even though the range of the selection does)
3362 assert_eq!(
3363 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3364 vec![0, 3, 5, 6]
3365 );
3366
3367 // multi-buffer support
3368 // in DisplayPoint co-ordinates, this is what we're dealing with:
3369 // 0: [[file
3370 // 1: header]]
3371 // 2: aaaaaa
3372 // 3: bbbbbb
3373 // 4: cccccc
3374 // 5:
3375 // 6: ...
3376 // 7: ffffff
3377 // 8: gggggg
3378 // 9: hhhhhh
3379 // 10:
3380 // 11: [[file
3381 // 12: header]]
3382 // 13: bbbbbb
3383 // 14: cccccc
3384 // 15: dddddd
3385 let window = cx.add_window(|cx| {
3386 let buffer = MultiBuffer::build_multi(
3387 [
3388 (
3389 &(sample_text(8, 6, 'a') + "\n"),
3390 vec![
3391 Point::new(0, 0)..Point::new(3, 0),
3392 Point::new(4, 0)..Point::new(7, 0),
3393 ],
3394 ),
3395 (
3396 &(sample_text(8, 6, 'a') + "\n"),
3397 vec![Point::new(1, 0)..Point::new(3, 0)],
3398 ),
3399 ],
3400 cx,
3401 );
3402 Editor::new(EditorMode::Full, buffer, None, cx)
3403 });
3404 let editor = window.root(cx).unwrap();
3405 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3406 let mut element = EditorElement::new(&editor, style);
3407 let state = window.update(cx, |editor, cx| {
3408 editor.cursor_shape = CursorShape::Block;
3409 editor.change_selections(None, cx, |s| {
3410 s.select_display_ranges([
3411 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3412 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3413 ]);
3414 });
3415 });
3416
3417 let state = cx
3418 .update_window(window.into(), |_, cx| {
3419 element.compute_layout(
3420 Bounds {
3421 origin: point(px(500.), px(500.)),
3422 size: size(px(500.), px(500.)),
3423 },
3424 cx,
3425 )
3426 })
3427 .unwrap();
3428 assert_eq!(state.selections.len(), 1);
3429 let local_selections = &state.selections[0].1;
3430 assert_eq!(local_selections.len(), 2);
3431
3432 // moves cursor on excerpt boundary back a line
3433 // and doesn't allow selection to bleed through
3434 assert_eq!(
3435 local_selections[0].range,
3436 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3437 );
3438 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3439 // moves cursor on buffer boundary back two lines
3440 // and doesn't allow selection to bleed through
3441 assert_eq!(
3442 local_selections[1].range,
3443 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3444 );
3445 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3446 }
3447
3448 #[gpui::test]
3449 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3450 init_test(cx, |_| {});
3451
3452 let window = cx.add_window(|cx| {
3453 let buffer = MultiBuffer::build_simple("", cx);
3454 Editor::new(EditorMode::Full, buffer, None, cx)
3455 });
3456 let editor = window.root(cx).unwrap();
3457 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3458 window
3459 .update(cx, |editor, cx| {
3460 editor.set_placeholder_text("hello", cx);
3461 editor.insert_blocks(
3462 [BlockProperties {
3463 style: BlockStyle::Fixed,
3464 disposition: BlockDisposition::Above,
3465 height: 3,
3466 position: Anchor::min(),
3467 render: Arc::new(|_| div().into_any()),
3468 }],
3469 None,
3470 cx,
3471 );
3472
3473 // Blur the editor so that it displays placeholder text.
3474 cx.blur();
3475 })
3476 .unwrap();
3477
3478 let mut element = EditorElement::new(&editor, style);
3479 let mut state = cx
3480 .update_window(window.into(), |_, cx| {
3481 element.compute_layout(
3482 Bounds {
3483 origin: point(px(500.), px(500.)),
3484 size: size(px(500.), px(500.)),
3485 },
3486 cx,
3487 )
3488 })
3489 .unwrap();
3490 let size = state.position_map.size;
3491
3492 assert_eq!(state.position_map.line_layouts.len(), 4);
3493 assert_eq!(
3494 state
3495 .line_numbers
3496 .iter()
3497 .map(Option::is_some)
3498 .collect::<Vec<_>>(),
3499 &[false, false, false, true]
3500 );
3501
3502 // Don't panic.
3503 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3504 cx.update_window(window.into(), |_, cx| {
3505 element.paint(bounds, &mut (), cx);
3506 })
3507 .unwrap()
3508 }
3509
3510 #[gpui::test]
3511 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3512 const TAB_SIZE: u32 = 4;
3513
3514 let input_text = "\t \t|\t| a b";
3515 let expected_invisibles = vec![
3516 Invisible::Tab {
3517 line_start_offset: 0,
3518 },
3519 Invisible::Whitespace {
3520 line_offset: TAB_SIZE as usize,
3521 },
3522 Invisible::Tab {
3523 line_start_offset: TAB_SIZE as usize + 1,
3524 },
3525 Invisible::Tab {
3526 line_start_offset: TAB_SIZE as usize * 2 + 1,
3527 },
3528 Invisible::Whitespace {
3529 line_offset: TAB_SIZE as usize * 3 + 1,
3530 },
3531 Invisible::Whitespace {
3532 line_offset: TAB_SIZE as usize * 3 + 3,
3533 },
3534 ];
3535 assert_eq!(
3536 expected_invisibles.len(),
3537 input_text
3538 .chars()
3539 .filter(|initial_char| initial_char.is_whitespace())
3540 .count(),
3541 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3542 );
3543
3544 init_test(cx, |s| {
3545 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3546 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3547 });
3548
3549 let actual_invisibles =
3550 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3551
3552 assert_eq!(expected_invisibles, actual_invisibles);
3553 }
3554
3555 #[gpui::test]
3556 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3557 init_test(cx, |s| {
3558 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3559 s.defaults.tab_size = NonZeroU32::new(4);
3560 });
3561
3562 for editor_mode_without_invisibles in [
3563 EditorMode::SingleLine,
3564 EditorMode::AutoHeight { max_lines: 100 },
3565 ] {
3566 let invisibles = collect_invisibles_from_new_editor(
3567 cx,
3568 editor_mode_without_invisibles,
3569 "\t\t\t| | a b",
3570 px(500.0),
3571 );
3572 assert!(invisibles.is_empty(),
3573 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3574 }
3575 }
3576
3577 #[gpui::test]
3578 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3579 let tab_size = 4;
3580 let input_text = "a\tbcd ".repeat(9);
3581 let repeated_invisibles = [
3582 Invisible::Tab {
3583 line_start_offset: 1,
3584 },
3585 Invisible::Whitespace {
3586 line_offset: tab_size as usize + 3,
3587 },
3588 Invisible::Whitespace {
3589 line_offset: tab_size as usize + 4,
3590 },
3591 Invisible::Whitespace {
3592 line_offset: tab_size as usize + 5,
3593 },
3594 ];
3595 let expected_invisibles = std::iter::once(repeated_invisibles)
3596 .cycle()
3597 .take(9)
3598 .flatten()
3599 .collect::<Vec<_>>();
3600 assert_eq!(
3601 expected_invisibles.len(),
3602 input_text
3603 .chars()
3604 .filter(|initial_char| initial_char.is_whitespace())
3605 .count(),
3606 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3607 );
3608 info!("Expected invisibles: {expected_invisibles:?}");
3609
3610 init_test(cx, |_| {});
3611
3612 // Put the same string with repeating whitespace pattern into editors of various size,
3613 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3614 let resize_step = 10.0;
3615 let mut editor_width = 200.0;
3616 while editor_width <= 1000.0 {
3617 update_test_language_settings(cx, |s| {
3618 s.defaults.tab_size = NonZeroU32::new(tab_size);
3619 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3620 s.defaults.preferred_line_length = Some(editor_width as u32);
3621 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3622 });
3623
3624 let actual_invisibles = collect_invisibles_from_new_editor(
3625 cx,
3626 EditorMode::Full,
3627 &input_text,
3628 px(editor_width),
3629 );
3630
3631 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3632 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3633 let mut i = 0;
3634 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3635 i = actual_index;
3636 match expected_invisibles.get(i) {
3637 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3638 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3639 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3640 _ => {
3641 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3642 }
3643 },
3644 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3645 }
3646 }
3647 let missing_expected_invisibles = &expected_invisibles[i + 1..];
3648 assert!(
3649 missing_expected_invisibles.is_empty(),
3650 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3651 );
3652
3653 editor_width += resize_step;
3654 }
3655 }
3656
3657 fn collect_invisibles_from_new_editor(
3658 cx: &mut TestAppContext,
3659 editor_mode: EditorMode,
3660 input_text: &str,
3661 editor_width: Pixels,
3662 ) -> Vec<Invisible> {
3663 info!(
3664 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
3665 editor_width.0
3666 );
3667 let window = cx.add_window(|cx| {
3668 let buffer = MultiBuffer::build_simple(&input_text, cx);
3669 Editor::new(editor_mode, buffer, None, cx)
3670 });
3671 let editor = window.root(cx).unwrap();
3672 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3673 let mut element = EditorElement::new(&editor, style);
3674 window
3675 .update(cx, |editor, cx| {
3676 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3677 editor.set_wrap_width(Some(editor_width), cx);
3678 })
3679 .unwrap();
3680 let layout_state = cx
3681 .update_window(window.into(), |_, cx| {
3682 element.compute_layout(
3683 Bounds {
3684 origin: point(px(500.), px(500.)),
3685 size: size(px(500.), px(500.)),
3686 },
3687 cx,
3688 )
3689 })
3690 .unwrap();
3691
3692 layout_state
3693 .position_map
3694 .line_layouts
3695 .iter()
3696 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3697 .flatten()
3698 .cloned()
3699 .collect()
3700 }
3701}
3702
3703pub fn register_action<T: Action>(
3704 view: &View<Editor>,
3705 cx: &mut WindowContext,
3706 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
3707) {
3708 let view = view.clone();
3709 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
3710 let action = action.downcast_ref().unwrap();
3711 if phase == DispatchPhase::Bubble {
3712 view.update(cx, |editor, cx| {
3713 listener(editor, action, cx);
3714 })
3715 }
3716 })
3717}
3718
3719fn compute_auto_height_layout(
3720 editor: &mut Editor,
3721 max_lines: usize,
3722 max_line_number_width: Pixels,
3723 known_dimensions: Size<Option<Pixels>>,
3724 cx: &mut ViewContext<Editor>,
3725) -> Option<Size<Pixels>> {
3726 let mut width = known_dimensions.width?;
3727 if let Some(height) = known_dimensions.height {
3728 return Some(size(width, height));
3729 }
3730
3731 let style = editor.style.as_ref().unwrap();
3732 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
3733 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3734 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3735 let em_width = cx
3736 .text_system()
3737 .typographic_bounds(font_id, font_size, 'm')
3738 .unwrap()
3739 .size
3740 .width;
3741
3742 let mut snapshot = editor.snapshot(cx);
3743 let gutter_padding;
3744 let gutter_width;
3745 let gutter_margin;
3746 if snapshot.show_gutter {
3747 let descent = cx.text_system().descent(font_id, font_size);
3748 let gutter_padding_factor = 3.5;
3749 gutter_padding = (em_width * gutter_padding_factor).round();
3750 gutter_width = max_line_number_width + gutter_padding * 2.0;
3751 gutter_margin = -descent;
3752 } else {
3753 gutter_padding = Pixels::ZERO;
3754 gutter_width = Pixels::ZERO;
3755 gutter_margin = Pixels::ZERO;
3756 };
3757
3758 editor.gutter_width = gutter_width;
3759 let text_width = width - gutter_width;
3760 let overscroll = size(em_width, px(0.));
3761
3762 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
3763 if editor.set_wrap_width(Some(editor_width), cx) {
3764 snapshot = editor.snapshot(cx);
3765 }
3766
3767 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
3768 let height = scroll_height
3769 .max(line_height)
3770 .min(line_height * max_lines as f32);
3771
3772 Some(size(width, height))
3773}