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