1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::ShowScrollbar,
7 git::{diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::{
9 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
10 },
11 link_go_to_definition::{
12 go_to_fetched_definition, go_to_fetched_type_definition, show_link_definition,
13 update_go_to_definition_link, update_inlay_link_and_hover_points, GoToDefinitionTrigger,
14 LinkGoToDefinitionState,
15 },
16 mouse_context_menu,
17 scroll::scroll_amount::ScrollAmount,
18 CursorShape, DisplayPoint, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
19 HalfPageDown, HalfPageUp, LineDown, LineUp, MoveDown, OpenExcerpts, PageDown, PageUp, Point,
20 SelectPhase, Selection, SoftWrap, ToPoint, MAX_LINE_LEN,
21};
22use anyhow::Result;
23use collections::{BTreeMap, HashMap};
24use git::diff::DiffHunkStatus;
25use gpui::{
26 div, overlay, point, px, relative, size, transparent_black, Action, AnchorCorner, AnyElement,
27 AsyncWindowContext, AvailableSpace, BorrowWindow, Bounds, ContentMask, Corners, CursorStyle,
28 DispatchPhase, Edges, Element, ElementId, ElementInputHandler, Entity, EntityId, Hsla,
29 InteractiveBounds, InteractiveElement, IntoElement, LineLayout, ModifiersChangedEvent,
30 MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, RenderOnce,
31 ScrollWheelEvent, ShapedLine, SharedString, Size, StackingOrder, StatefulInteractiveElement,
32 Style, Styled, TextRun, TextStyle, View, ViewContext, WeakView, WindowContext, WrappedLine,
33};
34use itertools::Itertools;
35use language::language_settings::ShowWhitespaceSetting;
36use multi_buffer::Anchor;
37use project::{
38 project_settings::{GitGutterSetting, ProjectSettings},
39 ProjectPath,
40};
41use settings::Settings;
42use smallvec::SmallVec;
43use std::{
44 any::TypeId,
45 borrow::Cow,
46 cmp::{self, Ordering},
47 fmt::Write,
48 iter,
49 ops::Range,
50 sync::Arc,
51};
52use sum_tree::Bias;
53use theme::{ActiveTheme, PlayerColor};
54use ui::{
55 h_stack, ButtonLike, ButtonStyle, Disclosure, IconButton, IconElement, IconSize, Label, Tooltip,
56};
57use ui::{prelude::*, Icon};
58use util::ResultExt;
59use workspace::item::Item;
60
61enum FoldMarkers {}
62
63struct SelectionLayout {
64 head: DisplayPoint,
65 cursor_shape: CursorShape,
66 is_newest: bool,
67 is_local: bool,
68 range: Range<DisplayPoint>,
69 active_rows: Range<u32>,
70}
71
72impl SelectionLayout {
73 fn new<T: ToPoint + ToDisplayPoint + Clone>(
74 selection: Selection<T>,
75 line_mode: bool,
76 cursor_shape: CursorShape,
77 map: &DisplaySnapshot,
78 is_newest: bool,
79 is_local: bool,
80 ) -> Self {
81 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
82 let display_selection = point_selection.map(|p| p.to_display_point(map));
83 let mut range = display_selection.range();
84 let mut head = display_selection.head();
85 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
86 ..map.next_line_boundary(point_selection.end).1.row();
87
88 // vim visual line mode
89 if line_mode {
90 let point_range = map.expand_to_line(point_selection.range());
91 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
92 }
93
94 // any vim visual mode (including line mode)
95 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
96 if head.column() > 0 {
97 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
98 } else if head.row() > 0 && head != map.max_point() {
99 head = map.clip_point(
100 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
101 Bias::Left,
102 );
103 // updating range.end is a no-op unless you're cursor is
104 // on the newline containing a multi-buffer divider
105 // in which case the clip_point may have moved the head up
106 // an additional row.
107 range.end = DisplayPoint::new(head.row() + 1, 0);
108 active_rows.end = head.row();
109 }
110 }
111
112 Self {
113 head,
114 cursor_shape,
115 is_newest,
116 is_local,
117 range,
118 active_rows,
119 }
120 }
121}
122
123pub struct EditorElement {
124 editor: View<Editor>,
125 style: EditorStyle,
126}
127
128impl EditorElement {
129 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
130 Self {
131 editor: editor.clone(),
132 style,
133 }
134 }
135
136 fn register_actions(&self, cx: &mut WindowContext) {
137 let view = &self.editor;
138 self.editor.update(cx, |editor, cx| {
139 for action in editor.editor_actions.iter() {
140 (action)(cx)
141 }
142 });
143 register_action(view, cx, Editor::move_left);
144 register_action(view, cx, Editor::move_right);
145 register_action(view, cx, Editor::move_down);
146 register_action(view, cx, Editor::move_up);
147 register_action(view, cx, Editor::cancel);
148 register_action(view, cx, Editor::newline);
149 register_action(view, cx, Editor::newline_above);
150 register_action(view, cx, Editor::newline_below);
151 register_action(view, cx, Editor::backspace);
152 register_action(view, cx, Editor::delete);
153 register_action(view, cx, Editor::tab);
154 register_action(view, cx, Editor::tab_prev);
155 register_action(view, cx, Editor::indent);
156 register_action(view, cx, Editor::outdent);
157 register_action(view, cx, Editor::delete_line);
158 register_action(view, cx, Editor::join_lines);
159 register_action(view, cx, Editor::sort_lines_case_sensitive);
160 register_action(view, cx, Editor::sort_lines_case_insensitive);
161 register_action(view, cx, Editor::reverse_lines);
162 register_action(view, cx, Editor::shuffle_lines);
163 register_action(view, cx, Editor::convert_to_upper_case);
164 register_action(view, cx, Editor::convert_to_lower_case);
165 register_action(view, cx, Editor::convert_to_title_case);
166 register_action(view, cx, Editor::convert_to_snake_case);
167 register_action(view, cx, Editor::convert_to_kebab_case);
168 register_action(view, cx, Editor::convert_to_upper_camel_case);
169 register_action(view, cx, Editor::convert_to_lower_camel_case);
170 register_action(view, cx, Editor::delete_to_previous_word_start);
171 register_action(view, cx, Editor::delete_to_previous_subword_start);
172 register_action(view, cx, Editor::delete_to_next_word_end);
173 register_action(view, cx, Editor::delete_to_next_subword_end);
174 register_action(view, cx, Editor::delete_to_beginning_of_line);
175 register_action(view, cx, Editor::delete_to_end_of_line);
176 register_action(view, cx, Editor::cut_to_end_of_line);
177 register_action(view, cx, Editor::duplicate_line);
178 register_action(view, cx, Editor::move_line_up);
179 register_action(view, cx, Editor::move_line_down);
180 register_action(view, cx, Editor::transpose);
181 register_action(view, cx, Editor::cut);
182 register_action(view, cx, Editor::copy);
183 register_action(view, cx, Editor::paste);
184 register_action(view, cx, Editor::undo);
185 register_action(view, cx, Editor::redo);
186 register_action(view, cx, Editor::move_page_up);
187 register_action(view, cx, Editor::move_page_down);
188 register_action(view, cx, Editor::next_screen);
189 register_action(view, cx, Editor::scroll_cursor_top);
190 register_action(view, cx, Editor::scroll_cursor_center);
191 register_action(view, cx, Editor::scroll_cursor_bottom);
192 register_action(view, cx, |editor, _: &LineDown, cx| {
193 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
194 });
195 register_action(view, cx, |editor, _: &LineUp, cx| {
196 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
197 });
198 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
199 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
200 });
201 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
202 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
203 });
204 register_action(view, cx, |editor, _: &PageDown, cx| {
205 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
206 });
207 register_action(view, cx, |editor, _: &PageUp, cx| {
208 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
209 });
210 register_action(view, cx, Editor::move_to_previous_word_start);
211 register_action(view, cx, Editor::move_to_previous_subword_start);
212 register_action(view, cx, Editor::move_to_next_word_end);
213 register_action(view, cx, Editor::move_to_next_subword_end);
214 register_action(view, cx, Editor::move_to_beginning_of_line);
215 register_action(view, cx, Editor::move_to_end_of_line);
216 register_action(view, cx, Editor::move_to_start_of_paragraph);
217 register_action(view, cx, Editor::move_to_end_of_paragraph);
218 register_action(view, cx, Editor::move_to_beginning);
219 register_action(view, cx, Editor::move_to_end);
220 register_action(view, cx, Editor::select_up);
221 register_action(view, cx, Editor::select_down);
222 register_action(view, cx, Editor::select_left);
223 register_action(view, cx, Editor::select_right);
224 register_action(view, cx, Editor::select_to_previous_word_start);
225 register_action(view, cx, Editor::select_to_previous_subword_start);
226 register_action(view, cx, Editor::select_to_next_word_end);
227 register_action(view, cx, Editor::select_to_next_subword_end);
228 register_action(view, cx, Editor::select_to_beginning_of_line);
229 register_action(view, cx, Editor::select_to_end_of_line);
230 register_action(view, cx, Editor::select_to_start_of_paragraph);
231 register_action(view, cx, Editor::select_to_end_of_paragraph);
232 register_action(view, cx, Editor::select_to_beginning);
233 register_action(view, cx, Editor::select_to_end);
234 register_action(view, cx, Editor::select_all);
235 register_action(view, cx, |editor, action, cx| {
236 editor.select_all_matches(action, cx).log_err();
237 });
238 register_action(view, cx, Editor::select_line);
239 register_action(view, cx, Editor::split_selection_into_lines);
240 register_action(view, cx, Editor::add_selection_above);
241 register_action(view, cx, Editor::add_selection_below);
242 register_action(view, cx, |editor, action, cx| {
243 editor.select_next(action, cx).log_err();
244 });
245 register_action(view, cx, |editor, action, cx| {
246 editor.select_previous(action, cx).log_err();
247 });
248 register_action(view, cx, Editor::toggle_comments);
249 register_action(view, cx, Editor::select_larger_syntax_node);
250 register_action(view, cx, Editor::select_smaller_syntax_node);
251 register_action(view, cx, Editor::move_to_enclosing_bracket);
252 register_action(view, cx, Editor::undo_selection);
253 register_action(view, cx, Editor::redo_selection);
254 register_action(view, cx, Editor::go_to_diagnostic);
255 register_action(view, cx, Editor::go_to_prev_diagnostic);
256 register_action(view, cx, Editor::go_to_hunk);
257 register_action(view, cx, Editor::go_to_prev_hunk);
258 register_action(view, cx, Editor::go_to_definition);
259 register_action(view, cx, Editor::go_to_definition_split);
260 register_action(view, cx, Editor::go_to_type_definition);
261 register_action(view, cx, Editor::go_to_type_definition_split);
262 register_action(view, cx, Editor::fold);
263 register_action(view, cx, Editor::fold_at);
264 register_action(view, cx, Editor::unfold_lines);
265 register_action(view, cx, Editor::unfold_at);
266 register_action(view, cx, Editor::fold_selected_ranges);
267 register_action(view, cx, Editor::show_completions);
268 register_action(view, cx, Editor::toggle_code_actions);
269 register_action(view, cx, Editor::open_excerpts);
270 register_action(view, cx, Editor::toggle_soft_wrap);
271 register_action(view, cx, Editor::toggle_inlay_hints);
272 register_action(view, cx, hover_popover::hover);
273 register_action(view, cx, Editor::reveal_in_finder);
274 register_action(view, cx, Editor::copy_path);
275 register_action(view, cx, Editor::copy_relative_path);
276 register_action(view, cx, Editor::copy_highlight_json);
277 register_action(view, cx, |editor, action, cx| {
278 editor
279 .format(action, cx)
280 .map(|task| task.detach_and_log_err(cx));
281 });
282 register_action(view, cx, Editor::restart_language_server);
283 register_action(view, cx, Editor::show_character_palette);
284 register_action(view, cx, |editor, action, cx| {
285 editor
286 .confirm_completion(action, cx)
287 .map(|task| task.detach_and_log_err(cx));
288 });
289 register_action(view, cx, |editor, action, cx| {
290 editor
291 .confirm_code_action(action, cx)
292 .map(|task| task.detach_and_log_err(cx));
293 });
294 register_action(view, cx, |editor, action, cx| {
295 editor
296 .rename(action, cx)
297 .map(|task| task.detach_and_log_err(cx));
298 });
299 register_action(view, cx, |editor, action, cx| {
300 editor
301 .confirm_rename(action, cx)
302 .map(|task| task.detach_and_log_err(cx));
303 });
304 register_action(view, cx, |editor, action, cx| {
305 editor
306 .find_all_references(action, cx)
307 .map(|task| task.detach_and_log_err(cx));
308 });
309 register_action(view, cx, Editor::next_copilot_suggestion);
310 register_action(view, cx, Editor::previous_copilot_suggestion);
311 register_action(view, cx, Editor::copilot_suggest);
312 register_action(view, cx, Editor::context_menu_first);
313 register_action(view, cx, Editor::context_menu_prev);
314 register_action(view, cx, Editor::context_menu_next);
315 register_action(view, cx, Editor::context_menu_last);
316 }
317
318 fn register_key_listeners(&self, cx: &mut WindowContext) {
319 cx.on_key_event({
320 let editor = self.editor.clone();
321 move |event: &ModifiersChangedEvent, phase, cx| {
322 if phase != DispatchPhase::Bubble {
323 return;
324 }
325
326 if editor.update(cx, |editor, cx| Self::modifiers_changed(editor, event, cx)) {
327 cx.stop_propagation();
328 }
329 }
330 });
331 }
332
333 pub(crate) fn modifiers_changed(
334 editor: &mut Editor,
335 event: &ModifiersChangedEvent,
336 cx: &mut ViewContext<Editor>,
337 ) -> bool {
338 let pending_selection = editor.has_pending_selection();
339
340 if let Some(point) = &editor.link_go_to_definition_state.last_trigger_point {
341 if event.command && !pending_selection {
342 let point = point.clone();
343 let snapshot = editor.snapshot(cx);
344 let kind = point.definition_kind(event.shift);
345
346 show_link_definition(kind, editor, point, snapshot, cx);
347 return false;
348 }
349 }
350
351 {
352 if editor.link_go_to_definition_state.symbol_range.is_some()
353 || !editor.link_go_to_definition_state.definitions.is_empty()
354 {
355 editor.link_go_to_definition_state.symbol_range.take();
356 editor.link_go_to_definition_state.definitions.clear();
357 cx.notify();
358 }
359
360 editor.link_go_to_definition_state.task = None;
361
362 editor.clear_highlights::<LinkGoToDefinitionState>(cx);
363 }
364
365 false
366 }
367
368 fn mouse_left_down(
369 editor: &mut Editor,
370 event: &MouseDownEvent,
371 position_map: &PositionMap,
372 text_bounds: Bounds<Pixels>,
373 gutter_bounds: Bounds<Pixels>,
374 stacking_order: &StackingOrder,
375 cx: &mut ViewContext<Editor>,
376 ) -> bool {
377 let mut click_count = event.click_count;
378 let modifiers = event.modifiers;
379
380 if gutter_bounds.contains_point(&event.position) {
381 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
382 } else if !text_bounds.contains_point(&event.position) {
383 return false;
384 }
385 if !cx.was_top_layer(&event.position, stacking_order) {
386 return false;
387 }
388
389 let point_for_position = position_map.point_for_position(text_bounds, event.position);
390 let position = point_for_position.previous_valid;
391 if modifiers.shift && modifiers.alt {
392 editor.select(
393 SelectPhase::BeginColumnar {
394 position,
395 goal_column: point_for_position.exact_unclipped.column(),
396 },
397 cx,
398 );
399 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
400 editor.select(
401 SelectPhase::Extend {
402 position,
403 click_count,
404 },
405 cx,
406 );
407 } else {
408 editor.select(
409 SelectPhase::Begin {
410 position,
411 add: modifiers.alt,
412 click_count,
413 },
414 cx,
415 );
416 }
417
418 true
419 }
420
421 fn mouse_right_down(
422 editor: &mut Editor,
423 event: &MouseDownEvent,
424 position_map: &PositionMap,
425 text_bounds: Bounds<Pixels>,
426 cx: &mut ViewContext<Editor>,
427 ) -> bool {
428 if !text_bounds.contains_point(&event.position) {
429 return false;
430 }
431 let point_for_position = position_map.point_for_position(text_bounds, event.position);
432 mouse_context_menu::deploy_context_menu(
433 editor,
434 event.position,
435 point_for_position.previous_valid,
436 cx,
437 );
438 true
439 }
440
441 fn mouse_up(
442 editor: &mut Editor,
443 event: &MouseUpEvent,
444 position_map: &PositionMap,
445 text_bounds: Bounds<Pixels>,
446 stacking_order: &StackingOrder,
447 cx: &mut ViewContext<Editor>,
448 ) -> bool {
449 let end_selection = editor.has_pending_selection();
450 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
451
452 if end_selection {
453 editor.select(SelectPhase::End, cx);
454 }
455
456 if !pending_nonempty_selections
457 && event.modifiers.command
458 && text_bounds.contains_point(&event.position)
459 && cx.was_top_layer(&event.position, stacking_order)
460 {
461 let point = position_map.point_for_position(text_bounds, event.position);
462 let could_be_inlay = point.as_valid().is_none();
463 let split = event.modifiers.alt;
464 if event.modifiers.shift || could_be_inlay {
465 go_to_fetched_type_definition(editor, point, split, cx);
466 } else {
467 go_to_fetched_definition(editor, point, split, cx);
468 }
469
470 return true;
471 }
472
473 end_selection
474 }
475
476 fn mouse_moved(
477 editor: &mut Editor,
478 event: &MouseMoveEvent,
479 position_map: &PositionMap,
480 text_bounds: Bounds<Pixels>,
481 gutter_bounds: Bounds<Pixels>,
482 stacking_order: &StackingOrder,
483 cx: &mut ViewContext<Editor>,
484 ) -> bool {
485 let modifiers = event.modifiers;
486 if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
487 let point_for_position = position_map.point_for_position(text_bounds, event.position);
488 let mut scroll_delta = gpui::Point::<f32>::zero();
489 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
490 let top = text_bounds.origin.y + vertical_margin;
491 let bottom = text_bounds.lower_left().y - vertical_margin;
492 if event.position.y < top {
493 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
494 }
495 if event.position.y > bottom {
496 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
497 }
498
499 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
500 let left = text_bounds.origin.x + horizontal_margin;
501 let right = text_bounds.upper_right().x - horizontal_margin;
502 if event.position.x < left {
503 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
504 }
505 if event.position.x > right {
506 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
507 }
508
509 editor.select(
510 SelectPhase::Update {
511 position: point_for_position.previous_valid,
512 goal_column: point_for_position.exact_unclipped.column(),
513 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
514 .clamp(&gpui::Point::zero(), &position_map.scroll_max),
515 },
516 cx,
517 );
518 }
519
520 let text_hovered = text_bounds.contains_point(&event.position);
521 let gutter_hovered = gutter_bounds.contains_point(&event.position);
522 let was_top = cx.was_top_layer(&event.position, stacking_order);
523
524 editor.set_gutter_hovered(gutter_hovered, cx);
525
526 // Don't trigger hover popover if mouse is hovering over context menu
527 if text_hovered && was_top {
528 let point_for_position = position_map.point_for_position(text_bounds, event.position);
529
530 match point_for_position.as_valid() {
531 Some(point) => {
532 update_go_to_definition_link(
533 editor,
534 Some(GoToDefinitionTrigger::Text(point)),
535 modifiers.command,
536 modifiers.shift,
537 cx,
538 );
539 hover_at(editor, Some(point), cx);
540 }
541 None => {
542 update_inlay_link_and_hover_points(
543 &position_map.snapshot,
544 point_for_position,
545 editor,
546 modifiers.command,
547 modifiers.shift,
548 cx,
549 );
550 }
551 }
552
553 true
554 } else {
555 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
556 hover_at(editor, None, cx);
557 gutter_hovered && was_top
558 }
559 }
560
561 fn scroll(
562 editor: &mut Editor,
563 event: &ScrollWheelEvent,
564 position_map: &PositionMap,
565 bounds: &InteractiveBounds,
566 cx: &mut ViewContext<Editor>,
567 ) -> bool {
568 if !bounds.visibly_contains(&event.position, cx) {
569 return false;
570 }
571
572 let line_height = position_map.line_height;
573 let max_glyph_width = position_map.em_width;
574 let (delta, axis) = match event.delta {
575 gpui::ScrollDelta::Pixels(mut pixels) => {
576 //Trackpad
577 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
578 (pixels, axis)
579 }
580
581 gpui::ScrollDelta::Lines(lines) => {
582 //Not trackpad
583 let pixels = point(lines.x * max_glyph_width, lines.y * line_height);
584 (pixels, None)
585 }
586 };
587
588 let scroll_position = position_map.snapshot.scroll_position();
589 let x = f32::from((scroll_position.x * max_glyph_width - delta.x) / max_glyph_width);
590 let y = f32::from((scroll_position.y * line_height - delta.y) / line_height);
591 let scroll_position = point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
592 editor.scroll(scroll_position, axis, cx);
593
594 true
595 }
596
597 fn paint_background(
598 &self,
599 gutter_bounds: Bounds<Pixels>,
600 text_bounds: Bounds<Pixels>,
601 layout: &LayoutState,
602 cx: &mut WindowContext,
603 ) {
604 let bounds = gutter_bounds.union(&text_bounds);
605 let scroll_top =
606 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
607 let gutter_bg = cx.theme().colors().editor_gutter_background;
608 cx.paint_quad(
609 gutter_bounds,
610 Corners::default(),
611 gutter_bg,
612 Edges::default(),
613 transparent_black(),
614 );
615 cx.paint_quad(
616 text_bounds,
617 Corners::default(),
618 self.style.background,
619 Edges::default(),
620 transparent_black(),
621 );
622
623 if let EditorMode::Full = layout.mode {
624 let mut active_rows = layout.active_rows.iter().peekable();
625 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
626 let mut end_row = *start_row;
627 while active_rows.peek().map_or(false, |r| {
628 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
629 }) {
630 active_rows.next().unwrap();
631 end_row += 1;
632 }
633
634 if !contains_non_empty_selection {
635 let origin = point(
636 bounds.origin.x,
637 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
638 - scroll_top,
639 );
640 let size = size(
641 bounds.size.width,
642 layout.position_map.line_height * (end_row - start_row + 1) as f32,
643 );
644 let active_line_bg = cx.theme().colors().editor_active_line_background;
645 cx.paint_quad(
646 Bounds { origin, size },
647 Corners::default(),
648 active_line_bg,
649 Edges::default(),
650 transparent_black(),
651 );
652 }
653 }
654
655 if let Some(highlighted_rows) = &layout.highlighted_rows {
656 let origin = point(
657 bounds.origin.x,
658 bounds.origin.y
659 + (layout.position_map.line_height * highlighted_rows.start as f32)
660 - scroll_top,
661 );
662 let size = size(
663 bounds.size.width,
664 layout.position_map.line_height * highlighted_rows.len() as f32,
665 );
666 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
667 cx.paint_quad(
668 Bounds { origin, size },
669 Corners::default(),
670 highlighted_line_bg,
671 Edges::default(),
672 transparent_black(),
673 );
674 }
675
676 let scroll_left =
677 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
678
679 for (wrap_position, active) in layout.wrap_guides.iter() {
680 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
681 - scroll_left;
682
683 if x < text_bounds.origin.x
684 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
685 {
686 continue;
687 }
688
689 let color = if *active {
690 cx.theme().colors().editor_active_wrap_guide
691 } else {
692 cx.theme().colors().editor_wrap_guide
693 };
694 cx.paint_quad(
695 Bounds {
696 origin: point(x, text_bounds.origin.y),
697 size: size(px(1.), text_bounds.size.height),
698 },
699 Corners::default(),
700 color,
701 Edges::default(),
702 transparent_black(),
703 );
704 }
705 }
706 }
707
708 fn paint_gutter(
709 &mut self,
710 bounds: Bounds<Pixels>,
711 layout: &mut LayoutState,
712 cx: &mut WindowContext,
713 ) {
714 let line_height = layout.position_map.line_height;
715
716 let scroll_position = layout.position_map.snapshot.scroll_position();
717 let scroll_top = scroll_position.y * line_height;
718
719 let show_gutter = matches!(
720 ProjectSettings::get_global(cx).git.git_gutter,
721 Some(GitGutterSetting::TrackedFiles)
722 );
723
724 if show_gutter {
725 Self::paint_diff_hunks(bounds, layout, cx);
726 }
727
728 for (ix, line) in layout.line_numbers.iter().enumerate() {
729 if let Some(line) = line {
730 let line_origin = bounds.origin
731 + point(
732 bounds.size.width - line.width - layout.gutter_padding,
733 ix as f32 * line_height - (scroll_top % line_height),
734 );
735
736 line.paint(line_origin, line_height, cx);
737 }
738 }
739
740 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
741 if let Some(mut fold_indicator) = fold_indicator {
742 let mut fold_indicator = fold_indicator.into_any_element();
743 let available_space = size(
744 AvailableSpace::MinContent,
745 AvailableSpace::Definite(line_height * 0.55),
746 );
747 let fold_indicator_size = fold_indicator.measure(available_space, cx);
748
749 let position = point(
750 bounds.size.width - layout.gutter_padding,
751 ix as f32 * line_height - (scroll_top % line_height),
752 );
753 let centering_offset = point(
754 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width) / 2.,
755 (line_height - fold_indicator_size.height) / 2.,
756 );
757 let origin = bounds.origin + position + centering_offset;
758 fold_indicator.draw(origin, available_space, cx);
759 }
760 }
761
762 if let Some(indicator) = layout.code_actions_indicator.take() {
763 let mut button = indicator.button.into_any_element();
764 let available_space = size(
765 AvailableSpace::MinContent,
766 AvailableSpace::Definite(line_height),
767 );
768 let indicator_size = button.measure(available_space, cx);
769
770 let mut x = Pixels::ZERO;
771 let mut y = indicator.row as f32 * line_height - scroll_top;
772 // Center indicator.
773 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
774 y += (line_height - indicator_size.height) / 2.;
775
776 button.draw(bounds.origin + point(x, y), available_space, cx);
777 }
778 }
779
780 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut WindowContext) {
781 let line_height = layout.position_map.line_height;
782
783 let scroll_position = layout.position_map.snapshot.scroll_position();
784 let scroll_top = scroll_position.y * line_height;
785
786 for hunk in &layout.display_hunks {
787 let (display_row_range, status) = match hunk {
788 //TODO: This rendering is entirely a horrible hack
789 &DisplayDiffHunk::Folded { display_row: row } => {
790 let start_y = row as f32 * line_height - scroll_top;
791 let end_y = start_y + line_height;
792
793 let width = 0.275 * line_height;
794 let highlight_origin = bounds.origin + point(-width, start_y);
795 let highlight_size = size(width * 2., end_y - start_y);
796 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
797 cx.paint_quad(
798 highlight_bounds,
799 Corners::all(1. * line_height),
800 gpui::yellow(), // todo!("use the right color")
801 Edges::default(),
802 transparent_black(),
803 );
804
805 continue;
806 }
807
808 DisplayDiffHunk::Unfolded {
809 display_row_range,
810 status,
811 } => (display_row_range, status),
812 };
813
814 let color = match status {
815 DiffHunkStatus::Added => gpui::green(), // todo!("use the appropriate color")
816 DiffHunkStatus::Modified => gpui::yellow(), // todo!("use the appropriate color")
817
818 //TODO: This rendering is entirely a horrible hack
819 DiffHunkStatus::Removed => {
820 let row = display_row_range.start;
821
822 let offset = line_height / 2.;
823 let start_y = row as f32 * line_height - offset - scroll_top;
824 let end_y = start_y + line_height;
825
826 let width = 0.275 * line_height;
827 let highlight_origin = bounds.origin + point(-width, start_y);
828 let highlight_size = size(width * 2., end_y - start_y);
829 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
830 cx.paint_quad(
831 highlight_bounds,
832 Corners::all(1. * line_height),
833 gpui::red(), // todo!("use the right color")
834 Edges::default(),
835 transparent_black(),
836 );
837
838 continue;
839 }
840 };
841
842 let start_row = display_row_range.start;
843 let end_row = display_row_range.end;
844
845 let start_y = start_row as f32 * line_height - scroll_top;
846 let end_y = end_row as f32 * line_height - scroll_top;
847
848 let width = 0.275 * line_height;
849 let highlight_origin = bounds.origin + point(-width, start_y);
850 let highlight_size = size(width * 2., end_y - start_y);
851 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
852 cx.paint_quad(
853 highlight_bounds,
854 Corners::all(0.05 * line_height),
855 color, // todo!("use the right color")
856 Edges::default(),
857 transparent_black(),
858 );
859 }
860 }
861
862 fn paint_text(
863 &mut self,
864 text_bounds: Bounds<Pixels>,
865 layout: &mut LayoutState,
866 cx: &mut WindowContext,
867 ) {
868 let scroll_position = layout.position_map.snapshot.scroll_position();
869 let start_row = layout.visible_display_row_range.start;
870 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
871 let line_end_overshoot = 0.15 * layout.position_map.line_height;
872 let whitespace_setting = self
873 .editor
874 .read(cx)
875 .buffer
876 .read(cx)
877 .settings_at(0, cx)
878 .show_whitespaces;
879
880 cx.with_content_mask(
881 Some(ContentMask {
882 bounds: text_bounds,
883 }),
884 |cx| {
885 if text_bounds.contains_point(&cx.mouse_position()) {
886 if self
887 .editor
888 .read(cx)
889 .link_go_to_definition_state
890 .definitions
891 .is_empty()
892 {
893 cx.set_cursor_style(CursorStyle::IBeam);
894 } else {
895 cx.set_cursor_style(CursorStyle::PointingHand);
896 }
897 }
898
899 let fold_corner_radius = 0.15 * layout.position_map.line_height;
900 cx.with_element_id(Some("folds"), |cx| {
901 let snapshot = &layout.position_map.snapshot;
902 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
903 let fold_range = fold.range.clone();
904 let display_range = fold.range.start.to_display_point(&snapshot)
905 ..fold.range.end.to_display_point(&snapshot);
906 debug_assert_eq!(display_range.start.row(), display_range.end.row());
907 let row = display_range.start.row();
908
909 let line_layout = &layout.position_map.line_layouts
910 [(row - layout.visible_display_row_range.start) as usize]
911 .line;
912 let start_x = content_origin.x
913 + line_layout.x_for_index(display_range.start.column() as usize)
914 - layout.position_map.scroll_position.x;
915 let start_y = content_origin.y
916 + row as f32 * layout.position_map.line_height
917 - layout.position_map.scroll_position.y;
918 let end_x = content_origin.x
919 + line_layout.x_for_index(display_range.end.column() as usize)
920 - layout.position_map.scroll_position.x;
921
922 let fold_bounds = Bounds {
923 origin: point(start_x, start_y),
924 size: size(end_x - start_x, layout.position_map.line_height),
925 };
926
927 let fold_background = cx.with_z_index(1, |cx| {
928 div()
929 .id(fold.id)
930 .size_full()
931 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
932 .on_click(cx.listener_for(
933 &self.editor,
934 move |editor: &mut Editor, _, cx| {
935 editor.unfold_ranges(
936 [fold_range.start..fold_range.end],
937 true,
938 false,
939 cx,
940 );
941 cx.stop_propagation();
942 },
943 ))
944 .draw(
945 fold_bounds.origin,
946 fold_bounds.size,
947 cx,
948 |fold_element_state, cx| {
949 if fold_element_state.is_active() {
950 gpui::blue()
951 } else if fold_bounds.contains_point(&cx.mouse_position()) {
952 gpui::black()
953 } else {
954 gpui::red()
955 }
956 },
957 )
958 });
959
960 self.paint_highlighted_range(
961 display_range.clone(),
962 fold_background,
963 fold_corner_radius,
964 fold_corner_radius * 2.,
965 layout,
966 content_origin,
967 text_bounds,
968 cx,
969 );
970 }
971 });
972
973 for (range, color) in &layout.highlighted_ranges {
974 self.paint_highlighted_range(
975 range.clone(),
976 *color,
977 Pixels::ZERO,
978 line_end_overshoot,
979 layout,
980 content_origin,
981 text_bounds,
982 cx,
983 );
984 }
985
986 let mut cursors = SmallVec::<[Cursor; 32]>::new();
987 let corner_radius = 0.15 * layout.position_map.line_height;
988 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
989
990 for (selection_style, selections) in &layout.selections {
991 for selection in selections {
992 self.paint_highlighted_range(
993 selection.range.clone(),
994 selection_style.selection,
995 corner_radius,
996 corner_radius * 2.,
997 layout,
998 content_origin,
999 text_bounds,
1000 cx,
1001 );
1002
1003 if selection.is_local && !selection.range.is_empty() {
1004 invisible_display_ranges.push(selection.range.clone());
1005 }
1006
1007 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
1008 let cursor_position = selection.head;
1009 if layout
1010 .visible_display_row_range
1011 .contains(&cursor_position.row())
1012 {
1013 let cursor_row_layout = &layout.position_map.line_layouts
1014 [(cursor_position.row() - start_row) as usize]
1015 .line;
1016 let cursor_column = cursor_position.column() as usize;
1017
1018 let cursor_character_x =
1019 cursor_row_layout.x_for_index(cursor_column);
1020 let mut block_width = cursor_row_layout
1021 .x_for_index(cursor_column + 1)
1022 - cursor_character_x;
1023 if block_width == Pixels::ZERO {
1024 block_width = layout.position_map.em_width;
1025 }
1026 let block_text = if let CursorShape::Block = selection.cursor_shape
1027 {
1028 layout
1029 .position_map
1030 .snapshot
1031 .chars_at(cursor_position)
1032 .next()
1033 .and_then(|(character, _)| {
1034 let text = SharedString::from(character.to_string());
1035 let len = text.len();
1036 cx.text_system()
1037 .shape_line(
1038 text,
1039 cursor_row_layout.font_size,
1040 &[TextRun {
1041 len,
1042 font: self.style.text.font(),
1043 color: self.style.background,
1044 background_color: None,
1045 underline: None,
1046 }],
1047 )
1048 .log_err()
1049 })
1050 } else {
1051 None
1052 };
1053
1054 let x = cursor_character_x - layout.position_map.scroll_position.x;
1055 let y = cursor_position.row() as f32
1056 * layout.position_map.line_height
1057 - layout.position_map.scroll_position.y;
1058 if selection.is_newest {
1059 self.editor.update(cx, |editor, _| {
1060 editor.pixel_position_of_newest_cursor = Some(point(
1061 text_bounds.origin.x + x + block_width / 2.,
1062 text_bounds.origin.y
1063 + y
1064 + layout.position_map.line_height / 2.,
1065 ))
1066 });
1067 }
1068 cursors.push(Cursor {
1069 color: selection_style.cursor,
1070 block_width,
1071 origin: point(x, y),
1072 line_height: layout.position_map.line_height,
1073 shape: selection.cursor_shape,
1074 block_text,
1075 });
1076 }
1077 }
1078 }
1079 }
1080
1081 for (ix, line_with_invisibles) in
1082 layout.position_map.line_layouts.iter().enumerate()
1083 {
1084 let row = start_row + ix as u32;
1085 line_with_invisibles.draw(
1086 layout,
1087 row,
1088 content_origin,
1089 whitespace_setting,
1090 &invisible_display_ranges,
1091 cx,
1092 )
1093 }
1094
1095 cx.with_z_index(0, |cx| {
1096 for cursor in cursors {
1097 cursor.paint(content_origin, cx);
1098 }
1099 });
1100
1101 cx.with_z_index(1, |cx| {
1102 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1103 let available_space =
1104 size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1105 let context_menu_size = context_menu.measure(available_space, cx);
1106
1107 let cursor_row_layout = &layout.position_map.line_layouts
1108 [(position.row() - start_row) as usize]
1109 .line;
1110 let x = cursor_row_layout.x_for_index(position.column() as usize)
1111 - layout.position_map.scroll_position.x;
1112 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1113 - layout.position_map.scroll_position.y;
1114 let mut list_origin = content_origin + point(x, y);
1115 let list_width = context_menu_size.width;
1116 let list_height = context_menu_size.height;
1117
1118 // Snap the right edge of the list to the right edge of the window if
1119 // its horizontal bounds overflow.
1120 if list_origin.x + list_width > cx.viewport_size().width {
1121 list_origin.x =
1122 (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1123 }
1124
1125 if list_origin.y + list_height > text_bounds.lower_right().y {
1126 list_origin.y -= layout.position_map.line_height + list_height;
1127 }
1128
1129 cx.break_content_mask(|cx| {
1130 context_menu.draw(list_origin, available_space, cx)
1131 });
1132 }
1133
1134 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1135 let available_space =
1136 size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1137
1138 // This is safe because we check on layout whether the required row is available
1139 let hovered_row_layout = &layout.position_map.line_layouts
1140 [(position.row() - start_row) as usize]
1141 .line;
1142
1143 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1144 // height. This is the size we will use to decide whether to render popovers above or below
1145 // the hovered line.
1146 let first_size = hover_popovers[0].measure(available_space, cx);
1147 let height_to_reserve = first_size.height
1148 + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1149
1150 // Compute Hovered Point
1151 let x = hovered_row_layout.x_for_index(position.column() as usize)
1152 - layout.position_map.scroll_position.x;
1153 let y = position.row() as f32 * layout.position_map.line_height
1154 - layout.position_map.scroll_position.y;
1155 let hovered_point = content_origin + point(x, y);
1156
1157 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1158 // There is enough space above. Render popovers above the hovered point
1159 let mut current_y = hovered_point.y;
1160 for mut hover_popover in hover_popovers {
1161 let size = hover_popover.measure(available_space, cx);
1162 let mut popover_origin =
1163 point(hovered_point.x, current_y - size.height);
1164
1165 let x_out_of_bounds =
1166 text_bounds.upper_right().x - (popover_origin.x + size.width);
1167 if x_out_of_bounds < Pixels::ZERO {
1168 popover_origin.x = popover_origin.x + x_out_of_bounds;
1169 }
1170
1171 cx.break_content_mask(|cx| {
1172 hover_popover.draw(popover_origin, available_space, cx)
1173 });
1174
1175 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1176 }
1177 } else {
1178 // There is not enough space above. Render popovers below the hovered point
1179 let mut current_y = hovered_point.y + layout.position_map.line_height;
1180 for mut hover_popover in hover_popovers {
1181 let size = hover_popover.measure(available_space, cx);
1182 let mut popover_origin = point(hovered_point.x, current_y);
1183
1184 let x_out_of_bounds =
1185 text_bounds.upper_right().x - (popover_origin.x + size.width);
1186 if x_out_of_bounds < Pixels::ZERO {
1187 popover_origin.x = popover_origin.x + x_out_of_bounds;
1188 }
1189
1190 hover_popover.draw(popover_origin, available_space, cx);
1191
1192 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1193 }
1194 }
1195 }
1196
1197 if let Some(mouse_context_menu) =
1198 self.editor.read(cx).mouse_context_menu.as_ref()
1199 {
1200 let element = overlay()
1201 .position(mouse_context_menu.position)
1202 .child(mouse_context_menu.context_menu.clone())
1203 .anchor(AnchorCorner::TopLeft)
1204 .snap_to_window();
1205 element.draw(
1206 gpui::Point::default(),
1207 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1208 cx,
1209 |_, _| {},
1210 );
1211 }
1212 })
1213 },
1214 )
1215 }
1216
1217 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1218 bounds.upper_right().x - self.style.scrollbar_width
1219 }
1220
1221 // fn paint_scrollbar(
1222 // &mut self,
1223 // bounds: Bounds<Pixels>,
1224 // layout: &mut LayoutState,
1225 // editor: &Editor,
1226 // cx: &mut ViewContext<Editor>,
1227 // ) {
1228 // enum ScrollbarMouseHandlers {}
1229 // if layout.mode != EditorMode::Full {
1230 // return;
1231 // }
1232
1233 // let style = &self.style.theme.scrollbar;
1234
1235 // let top = bounds.min_y;
1236 // let bottom = bounds.max_y;
1237 // let right = bounds.max_x;
1238 // let left = self.scrollbar_left(&bounds);
1239 // let row_range = &layout.scrollbar_row_range;
1240 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1241
1242 // let mut height = bounds.height();
1243 // let mut first_row_y_offset = 0.0;
1244
1245 // // Impose a minimum height on the scrollbar thumb
1246 // let row_height = height / max_row;
1247 // let min_thumb_height =
1248 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
1249 // let thumb_height = (row_range.end - row_range.start) * row_height;
1250 // if thumb_height < min_thumb_height {
1251 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1252 // height -= min_thumb_height - thumb_height;
1253 // }
1254
1255 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
1256
1257 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1258 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1259 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
1260 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
1261
1262 // if layout.show_scrollbars {
1263 // cx.paint_quad(Quad {
1264 // bounds: track_bounds,
1265 // border: style.track.border.into(),
1266 // background: style.track.background_color,
1267 // ..Default::default()
1268 // });
1269 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
1270 // let theme = theme::current(cx);
1271 // let scrollbar_theme = &theme.editor.scrollbar;
1272 // if layout.is_singleton && scrollbar_settings.selections {
1273 // let start_anchor = Anchor::min();
1274 // let end_anchor = Anchor::max;
1275 // let color = scrollbar_theme.selections;
1276 // let border = Border {
1277 // width: 1.,
1278 // color: style.thumb.border.color,
1279 // overlay: false,
1280 // top: false,
1281 // right: true,
1282 // bottom: false,
1283 // left: true,
1284 // };
1285 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
1286 // let start_y = y_for_row(start.row() as f32);
1287 // let mut end_y = y_for_row(end.row() as f32);
1288 // if end_y - start_y < 1. {
1289 // end_y = start_y + 1.;
1290 // }
1291 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1292
1293 // cx.paint_quad(Quad {
1294 // bounds,
1295 // background: Some(color),
1296 // border: border.into(),
1297 // corner_radii: style.thumb.corner_radii.into(),
1298 // })
1299 // };
1300 // let background_ranges = editor
1301 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1302 // start_anchor..end_anchor,
1303 // &layout.position_map.snapshot,
1304 // 50000,
1305 // );
1306 // for row in background_ranges {
1307 // let start = row.start();
1308 // let end = row.end();
1309 // push_region(*start, *end);
1310 // }
1311 // }
1312
1313 // if layout.is_singleton && scrollbar_settings.git_diff {
1314 // let diff_style = scrollbar_theme.git.clone();
1315 // for hunk in layout
1316 // .position_map
1317 // .snapshot
1318 // .buffer_snapshot
1319 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1320 // {
1321 // let start_display = Point::new(hunk.buffer_range.start, 0)
1322 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1323 // let end_display = Point::new(hunk.buffer_range.end, 0)
1324 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1325 // let start_y = y_for_row(start_display.row() as f32);
1326 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1327 // y_for_row((end_display.row() + 1) as f32)
1328 // } else {
1329 // y_for_row((end_display.row()) as f32)
1330 // };
1331
1332 // if end_y - start_y < 1. {
1333 // end_y = start_y + 1.;
1334 // }
1335 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1336
1337 // let color = match hunk.status() {
1338 // DiffHunkStatus::Added => diff_style.inserted,
1339 // DiffHunkStatus::Modified => diff_style.modified,
1340 // DiffHunkStatus::Removed => diff_style.deleted,
1341 // };
1342
1343 // let border = Border {
1344 // width: 1.,
1345 // color: style.thumb.border.color,
1346 // overlay: false,
1347 // top: false,
1348 // right: true,
1349 // bottom: false,
1350 // left: true,
1351 // };
1352
1353 // cx.paint_quad(Quad {
1354 // bounds,
1355 // background: Some(color),
1356 // border: border.into(),
1357 // corner_radii: style.thumb.corner_radii.into(),
1358 // })
1359 // }
1360 // }
1361
1362 // cx.paint_quad(Quad {
1363 // bounds: thumb_bounds,
1364 // border: style.thumb.border.into(),
1365 // background: style.thumb.background_color,
1366 // corner_radii: style.thumb.corner_radii.into(),
1367 // });
1368 // }
1369
1370 // cx.scene().push_cursor_region(CursorRegion {
1371 // bounds: track_bounds,
1372 // style: CursorStyle::Arrow,
1373 // });
1374 // let region_id = cx.view_id();
1375 // cx.scene().push_mouse_region(
1376 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1377 // .on_move(move |event, editor: &mut Editor, cx| {
1378 // if event.pressed_button.is_none() {
1379 // editor.scroll_manager.show_scrollbar(cx);
1380 // }
1381 // })
1382 // .on_down(MouseButton::Left, {
1383 // let row_range = row_range.clone();
1384 // move |event, editor: &mut Editor, cx| {
1385 // let y = event.position.y;
1386 // if y < thumb_top || thumb_bottom < y {
1387 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1388 // let top_row = center_row
1389 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1390 // let mut position = editor.scroll_position(cx);
1391 // position.set_y(top_row as f32);
1392 // editor.set_scroll_position(position, cx);
1393 // } else {
1394 // editor.scroll_manager.show_scrollbar(cx);
1395 // }
1396 // }
1397 // })
1398 // .on_drag(MouseButton::Left, {
1399 // move |event, editor: &mut Editor, cx| {
1400 // if event.end {
1401 // return;
1402 // }
1403
1404 // let y = event.prev_mouse_position.y;
1405 // let new_y = event.position.y;
1406 // if thumb_top < y && y < thumb_bottom {
1407 // let mut position = editor.scroll_position(cx);
1408 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1409 // if position.y < 0.0 {
1410 // position.set_y(0.);
1411 // }
1412 // editor.set_scroll_position(position, cx);
1413 // }
1414 // }
1415 // }),
1416 // );
1417 // }
1418
1419 #[allow(clippy::too_many_arguments)]
1420 fn paint_highlighted_range(
1421 &self,
1422 range: Range<DisplayPoint>,
1423 color: Hsla,
1424 corner_radius: Pixels,
1425 line_end_overshoot: Pixels,
1426 layout: &LayoutState,
1427 content_origin: gpui::Point<Pixels>,
1428 bounds: Bounds<Pixels>,
1429 cx: &mut WindowContext,
1430 ) {
1431 let start_row = layout.visible_display_row_range.start;
1432 let end_row = layout.visible_display_row_range.end;
1433 if range.start != range.end {
1434 let row_range = if range.end.column() == 0 {
1435 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1436 } else {
1437 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1438 };
1439
1440 let highlighted_range = HighlightedRange {
1441 color,
1442 line_height: layout.position_map.line_height,
1443 corner_radius,
1444 start_y: content_origin.y
1445 + row_range.start as f32 * layout.position_map.line_height
1446 - layout.position_map.scroll_position.y,
1447 lines: row_range
1448 .into_iter()
1449 .map(|row| {
1450 let line_layout =
1451 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1452 HighlightedRangeLine {
1453 start_x: if row == range.start.row() {
1454 content_origin.x
1455 + line_layout.x_for_index(range.start.column() as usize)
1456 - layout.position_map.scroll_position.x
1457 } else {
1458 content_origin.x - layout.position_map.scroll_position.x
1459 },
1460 end_x: if row == range.end.row() {
1461 content_origin.x
1462 + line_layout.x_for_index(range.end.column() as usize)
1463 - layout.position_map.scroll_position.x
1464 } else {
1465 content_origin.x + line_layout.width + line_end_overshoot
1466 - layout.position_map.scroll_position.x
1467 },
1468 }
1469 })
1470 .collect(),
1471 };
1472
1473 highlighted_range.paint(bounds, cx);
1474 }
1475 }
1476
1477 fn paint_blocks(
1478 &mut self,
1479 bounds: Bounds<Pixels>,
1480 layout: &mut LayoutState,
1481 cx: &mut WindowContext,
1482 ) {
1483 let scroll_position = layout.position_map.snapshot.scroll_position();
1484 let scroll_left = scroll_position.x * layout.position_map.em_width;
1485 let scroll_top = scroll_position.y * layout.position_map.line_height;
1486
1487 for block in layout.blocks.drain(..) {
1488 let mut origin = bounds.origin
1489 + point(
1490 Pixels::ZERO,
1491 block.row as f32 * layout.position_map.line_height - scroll_top,
1492 );
1493 if !matches!(block.style, BlockStyle::Sticky) {
1494 origin += point(-scroll_left, Pixels::ZERO);
1495 }
1496 block.element.draw(origin, block.available_space, cx);
1497 }
1498 }
1499
1500 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1501 let style = &self.style;
1502 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1503 let layout = cx
1504 .text_system()
1505 .shape_line(
1506 SharedString::from(" ".repeat(column)),
1507 font_size,
1508 &[TextRun {
1509 len: column,
1510 font: style.text.font(),
1511 color: Hsla::default(),
1512 background_color: None,
1513 underline: None,
1514 }],
1515 )
1516 .unwrap();
1517
1518 layout.width
1519 }
1520
1521 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1522 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1523 self.column_pixels(digit_count, cx)
1524 }
1525
1526 //Folds contained in a hunk are ignored apart from shrinking visual size
1527 //If a fold contains any hunks then that fold line is marked as modified
1528 fn layout_git_gutters(
1529 &self,
1530 display_rows: Range<u32>,
1531 snapshot: &EditorSnapshot,
1532 ) -> Vec<DisplayDiffHunk> {
1533 let buffer_snapshot = &snapshot.buffer_snapshot;
1534
1535 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1536 .to_point(snapshot)
1537 .row;
1538 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1539 .to_point(snapshot)
1540 .row;
1541
1542 buffer_snapshot
1543 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1544 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1545 .dedup()
1546 .collect()
1547 }
1548
1549 fn calculate_relative_line_numbers(
1550 &self,
1551 snapshot: &EditorSnapshot,
1552 rows: &Range<u32>,
1553 relative_to: Option<u32>,
1554 ) -> HashMap<u32, u32> {
1555 let mut relative_rows: HashMap<u32, u32> = Default::default();
1556 let Some(relative_to) = relative_to else {
1557 return relative_rows;
1558 };
1559
1560 let start = rows.start.min(relative_to);
1561 let end = rows.end.max(relative_to);
1562
1563 let buffer_rows = snapshot
1564 .buffer_rows(start)
1565 .take(1 + (end - start) as usize)
1566 .collect::<Vec<_>>();
1567
1568 let head_idx = relative_to - start;
1569 let mut delta = 1;
1570 let mut i = head_idx + 1;
1571 while i < buffer_rows.len() as u32 {
1572 if buffer_rows[i as usize].is_some() {
1573 if rows.contains(&(i + start)) {
1574 relative_rows.insert(i + start, delta);
1575 }
1576 delta += 1;
1577 }
1578 i += 1;
1579 }
1580 delta = 1;
1581 i = head_idx.min(buffer_rows.len() as u32 - 1);
1582 while i > 0 && buffer_rows[i as usize].is_none() {
1583 i -= 1;
1584 }
1585
1586 while i > 0 {
1587 i -= 1;
1588 if buffer_rows[i as usize].is_some() {
1589 if rows.contains(&(i + start)) {
1590 relative_rows.insert(i + start, delta);
1591 }
1592 delta += 1;
1593 }
1594 }
1595
1596 relative_rows
1597 }
1598
1599 fn shape_line_numbers(
1600 &self,
1601 rows: Range<u32>,
1602 active_rows: &BTreeMap<u32, bool>,
1603 newest_selection_head: DisplayPoint,
1604 is_singleton: bool,
1605 snapshot: &EditorSnapshot,
1606 cx: &ViewContext<Editor>,
1607 ) -> (
1608 Vec<Option<ShapedLine>>,
1609 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1610 ) {
1611 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1612 let include_line_numbers = snapshot.mode == EditorMode::Full;
1613 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1614 let mut fold_statuses = Vec::with_capacity(rows.len());
1615 let mut line_number = String::new();
1616 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1617 let relative_to = if is_relative {
1618 Some(newest_selection_head.row())
1619 } else {
1620 None
1621 };
1622
1623 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1624
1625 for (ix, row) in snapshot
1626 .buffer_rows(rows.start)
1627 .take((rows.end - rows.start) as usize)
1628 .enumerate()
1629 {
1630 let display_row = rows.start + ix as u32;
1631 let (active, color) = if active_rows.contains_key(&display_row) {
1632 (true, cx.theme().colors().editor_active_line_number)
1633 } else {
1634 (false, cx.theme().colors().editor_line_number)
1635 };
1636 if let Some(buffer_row) = row {
1637 if include_line_numbers {
1638 line_number.clear();
1639 let default_number = buffer_row + 1;
1640 let number = relative_rows
1641 .get(&(ix as u32 + rows.start))
1642 .unwrap_or(&default_number);
1643 write!(&mut line_number, "{}", number).unwrap();
1644 let run = TextRun {
1645 len: line_number.len(),
1646 font: self.style.text.font(),
1647 color,
1648 background_color: None,
1649 underline: None,
1650 };
1651 let shaped_line = cx
1652 .text_system()
1653 .shape_line(line_number.clone().into(), font_size, &[run])
1654 .unwrap();
1655 shaped_line_numbers.push(Some(shaped_line));
1656 fold_statuses.push(
1657 is_singleton
1658 .then(|| {
1659 snapshot
1660 .fold_for_line(buffer_row)
1661 .map(|fold_status| (fold_status, buffer_row, active))
1662 })
1663 .flatten(),
1664 )
1665 }
1666 } else {
1667 fold_statuses.push(None);
1668 shaped_line_numbers.push(None);
1669 }
1670 }
1671
1672 (shaped_line_numbers, fold_statuses)
1673 }
1674
1675 fn layout_lines(
1676 &self,
1677 rows: Range<u32>,
1678 line_number_layouts: &[Option<ShapedLine>],
1679 snapshot: &EditorSnapshot,
1680 cx: &ViewContext<Editor>,
1681 ) -> Vec<LineWithInvisibles> {
1682 if rows.start >= rows.end {
1683 return Vec::new();
1684 }
1685
1686 // When the editor is empty and unfocused, then show the placeholder.
1687 if snapshot.is_empty() {
1688 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1689 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1690 let placeholder_text = snapshot.placeholder_text();
1691 let placeholder_lines = placeholder_text
1692 .as_ref()
1693 .map_or("", AsRef::as_ref)
1694 .split('\n')
1695 .skip(rows.start as usize)
1696 .chain(iter::repeat(""))
1697 .take(rows.len());
1698 placeholder_lines
1699 .filter_map(move |line| {
1700 let run = TextRun {
1701 len: line.len(),
1702 font: self.style.text.font(),
1703 color: placeholder_color,
1704 background_color: None,
1705 underline: Default::default(),
1706 };
1707 cx.text_system()
1708 .shape_line(line.to_string().into(), font_size, &[run])
1709 .log_err()
1710 })
1711 .map(|line| LineWithInvisibles {
1712 line,
1713 invisibles: Vec::new(),
1714 })
1715 .collect()
1716 } else {
1717 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1718 LineWithInvisibles::from_chunks(
1719 chunks,
1720 &self.style.text,
1721 MAX_LINE_LEN,
1722 rows.len() as usize,
1723 line_number_layouts,
1724 snapshot.mode,
1725 cx,
1726 )
1727 }
1728 }
1729
1730 fn compute_layout(
1731 &mut self,
1732 mut bounds: Bounds<Pixels>,
1733 cx: &mut WindowContext,
1734 ) -> LayoutState {
1735 self.editor.update(cx, |editor, cx| {
1736 let snapshot = editor.snapshot(cx);
1737 let style = self.style.clone();
1738
1739 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1740 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1741 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1742 let em_width = cx
1743 .text_system()
1744 .typographic_bounds(font_id, font_size, 'm')
1745 .unwrap()
1746 .size
1747 .width;
1748 let em_advance = cx
1749 .text_system()
1750 .advance(font_id, font_size, 'm')
1751 .unwrap()
1752 .width;
1753
1754 let gutter_padding;
1755 let gutter_width;
1756 let gutter_margin;
1757 if snapshot.show_gutter {
1758 let descent = cx.text_system().descent(font_id, font_size);
1759
1760 let gutter_padding_factor = 3.5;
1761 gutter_padding = (em_width * gutter_padding_factor).round();
1762 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1763 gutter_margin = -descent;
1764 } else {
1765 gutter_padding = Pixels::ZERO;
1766 gutter_width = Pixels::ZERO;
1767 gutter_margin = Pixels::ZERO;
1768 };
1769
1770 editor.gutter_width = gutter_width;
1771
1772 let text_width = bounds.size.width - gutter_width;
1773 let overscroll = size(em_width, px(0.));
1774 let snapshot = {
1775 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1776
1777 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1778 let wrap_width = match editor.soft_wrap_mode(cx) {
1779 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1780 SoftWrap::EditorWidth => editor_width,
1781 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1782 };
1783
1784 if editor.set_wrap_width(Some(wrap_width), cx) {
1785 editor.snapshot(cx)
1786 } else {
1787 snapshot
1788 }
1789 };
1790
1791 let wrap_guides = editor
1792 .wrap_guides(cx)
1793 .iter()
1794 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1795 .collect::<SmallVec<[_; 2]>>();
1796
1797 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1798 let gutter_size = size(gutter_width, bounds.size.height);
1799 let text_size = size(text_width, bounds.size.height);
1800
1801 let autoscroll_horizontally =
1802 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1803 let mut snapshot = editor.snapshot(cx);
1804
1805 let scroll_position = snapshot.scroll_position();
1806 // The scroll position is a fractional point, the whole number of which represents
1807 // the top of the window in terms of display rows.
1808 let start_row = scroll_position.y as u32;
1809 let height_in_lines = f32::from(bounds.size.height / line_height);
1810 let max_row = snapshot.max_point().row();
1811
1812 // Add 1 to ensure selections bleed off screen
1813 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1814
1815 let start_anchor = if start_row == 0 {
1816 Anchor::min()
1817 } else {
1818 snapshot
1819 .buffer_snapshot
1820 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1821 };
1822 let end_anchor = if end_row > max_row {
1823 Anchor::max()
1824 } else {
1825 snapshot
1826 .buffer_snapshot
1827 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1828 };
1829
1830 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1831 let mut active_rows = BTreeMap::new();
1832 let is_singleton = editor.is_singleton(cx);
1833
1834 let highlighted_rows = editor.highlighted_rows();
1835 let highlighted_ranges = editor.background_highlights_in_range(
1836 start_anchor..end_anchor,
1837 &snapshot.display_snapshot,
1838 cx.theme().colors(),
1839 );
1840
1841 let mut newest_selection_head = None;
1842
1843 if editor.show_local_selections {
1844 let mut local_selections: Vec<Selection<Point>> = editor
1845 .selections
1846 .disjoint_in_range(start_anchor..end_anchor, cx);
1847 local_selections.extend(editor.selections.pending(cx));
1848 let mut layouts = Vec::new();
1849 let newest = editor.selections.newest(cx);
1850 for selection in local_selections.drain(..) {
1851 let is_empty = selection.start == selection.end;
1852 let is_newest = selection == newest;
1853
1854 let layout = SelectionLayout::new(
1855 selection,
1856 editor.selections.line_mode,
1857 editor.cursor_shape,
1858 &snapshot.display_snapshot,
1859 is_newest,
1860 true,
1861 );
1862 if is_newest {
1863 newest_selection_head = Some(layout.head);
1864 }
1865
1866 for row in cmp::max(layout.active_rows.start, start_row)
1867 ..=cmp::min(layout.active_rows.end, end_row)
1868 {
1869 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1870 *contains_non_empty_selection |= !is_empty;
1871 }
1872 layouts.push(layout);
1873 }
1874
1875 selections.push((style.local_player, layouts));
1876 }
1877
1878 if let Some(collaboration_hub) = &editor.collaboration_hub {
1879 // When following someone, render the local selections in their color.
1880 if let Some(leader_id) = editor.leader_peer_id {
1881 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1882 if let Some(participant_index) = collaboration_hub
1883 .user_participant_indices(cx)
1884 .get(&collaborator.user_id)
1885 {
1886 if let Some((local_selection_style, _)) = selections.first_mut() {
1887 *local_selection_style = cx
1888 .theme()
1889 .players()
1890 .color_for_participant(participant_index.0);
1891 }
1892 }
1893 }
1894 }
1895
1896 let mut remote_selections = HashMap::default();
1897 for selection in snapshot.remote_selections_in_range(
1898 &(start_anchor..end_anchor),
1899 collaboration_hub.as_ref(),
1900 cx,
1901 ) {
1902 let selection_style = if let Some(participant_index) = selection.participant_index {
1903 cx.theme()
1904 .players()
1905 .color_for_participant(participant_index.0)
1906 } else {
1907 cx.theme().players().absent()
1908 };
1909
1910 // Don't re-render the leader's selections, since the local selections
1911 // match theirs.
1912 if Some(selection.peer_id) == editor.leader_peer_id {
1913 continue;
1914 }
1915
1916 remote_selections
1917 .entry(selection.replica_id)
1918 .or_insert((selection_style, Vec::new()))
1919 .1
1920 .push(SelectionLayout::new(
1921 selection.selection,
1922 selection.line_mode,
1923 selection.cursor_shape,
1924 &snapshot.display_snapshot,
1925 false,
1926 false,
1927 ));
1928 }
1929
1930 selections.extend(remote_selections.into_values());
1931 }
1932
1933 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1934 let show_scrollbars = match scrollbar_settings.show {
1935 ShowScrollbar::Auto => {
1936 // Git
1937 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1938 ||
1939 // Selections
1940 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1941 // Scrollmanager
1942 || editor.scroll_manager.scrollbars_visible()
1943 }
1944 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1945 ShowScrollbar::Always => true,
1946 ShowScrollbar::Never => false,
1947 };
1948
1949 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1950 let newest = editor.selections.newest::<Point>(cx);
1951 SelectionLayout::new(
1952 newest,
1953 editor.selections.line_mode,
1954 editor.cursor_shape,
1955 &snapshot.display_snapshot,
1956 true,
1957 true,
1958 )
1959 .head
1960 });
1961
1962 let (line_numbers, fold_statuses) = self.shape_line_numbers(
1963 start_row..end_row,
1964 &active_rows,
1965 head_for_relative,
1966 is_singleton,
1967 &snapshot,
1968 cx,
1969 );
1970
1971 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1972
1973 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1974
1975 let mut max_visible_line_width = Pixels::ZERO;
1976 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
1977 for line_with_invisibles in &line_layouts {
1978 if line_with_invisibles.line.width > max_visible_line_width {
1979 max_visible_line_width = line_with_invisibles.line.width;
1980 }
1981 }
1982
1983 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1984 .unwrap()
1985 .width;
1986 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1987
1988 let (scroll_width, blocks) = cx.with_element_id(Some("editor_blocks"), |cx| {
1989 self.layout_blocks(
1990 start_row..end_row,
1991 &snapshot,
1992 bounds.size.width,
1993 scroll_width,
1994 gutter_padding,
1995 gutter_width,
1996 em_width,
1997 gutter_width + gutter_margin,
1998 line_height,
1999 &style,
2000 &line_layouts,
2001 editor,
2002 cx,
2003 )
2004 });
2005
2006 let scroll_max = point(
2007 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
2008 max_row as f32,
2009 );
2010
2011 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2012
2013 let autoscrolled = if autoscroll_horizontally {
2014 editor.autoscroll_horizontally(
2015 start_row,
2016 text_size.width,
2017 scroll_width,
2018 em_width,
2019 &line_layouts,
2020 cx,
2021 )
2022 } else {
2023 false
2024 };
2025
2026 if clamped || autoscrolled {
2027 snapshot = editor.snapshot(cx);
2028 }
2029
2030 let mut context_menu = None;
2031 let mut code_actions_indicator = None;
2032 if let Some(newest_selection_head) = newest_selection_head {
2033 if (start_row..end_row).contains(&newest_selection_head.row()) {
2034 if editor.context_menu_visible() {
2035 let max_height = (12. * line_height).min((bounds.size.height - line_height) / 2.);
2036 context_menu =
2037 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2038 }
2039
2040 let active = matches!(
2041 editor.context_menu.read().as_ref(),
2042 Some(crate::ContextMenu::CodeActions(_))
2043 );
2044
2045 code_actions_indicator = editor
2046 .render_code_actions_indicator(&style, active, cx)
2047 .map(|element| CodeActionsIndicator {
2048 row: newest_selection_head.row(),
2049 button: element,
2050 });
2051 }
2052 }
2053
2054 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2055 let max_size = size(
2056 (120. * em_width) // Default size
2057 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2058 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2059 (16. * line_height) // Default size
2060 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2061 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2062 );
2063
2064 let mut hover = editor.hover_state.render(
2065 &snapshot,
2066 &style,
2067 visible_rows,
2068 max_size,
2069 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2070 cx,
2071 );
2072
2073 let mut fold_indicators = cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2074 editor.render_fold_indicators(
2075 fold_statuses,
2076 &style,
2077 editor.gutter_hovered,
2078 line_height,
2079 gutter_margin,
2080 cx,
2081 )
2082 });
2083
2084 let invisible_symbol_font_size = font_size / 2.;
2085 let tab_invisible = cx
2086 .text_system()
2087 .shape_line(
2088 "→".into(),
2089 invisible_symbol_font_size,
2090 &[TextRun {
2091 len: "→".len(),
2092 font: self.style.text.font(),
2093 color: cx.theme().colors().editor_invisible,
2094 background_color: None,
2095 underline: None,
2096 }],
2097 )
2098 .unwrap();
2099 let space_invisible = cx
2100 .text_system()
2101 .shape_line(
2102 "•".into(),
2103 invisible_symbol_font_size,
2104 &[TextRun {
2105 len: "•".len(),
2106 font: self.style.text.font(),
2107 color: cx.theme().colors().editor_invisible,
2108 background_color: None,
2109 underline: None,
2110 }],
2111 )
2112 .unwrap();
2113
2114 LayoutState {
2115 mode: snapshot.mode,
2116 position_map: Arc::new(PositionMap {
2117 size: bounds.size,
2118 scroll_position: point(
2119 scroll_position.x * em_width,
2120 scroll_position.y * line_height,
2121 ),
2122 scroll_max,
2123 line_layouts,
2124 line_height,
2125 em_width,
2126 em_advance,
2127 snapshot,
2128 }),
2129 visible_anchor_range: start_anchor..end_anchor,
2130 visible_display_row_range: start_row..end_row,
2131 wrap_guides,
2132 gutter_size,
2133 gutter_padding,
2134 text_size,
2135 scrollbar_row_range,
2136 show_scrollbars,
2137 is_singleton,
2138 max_row,
2139 gutter_margin,
2140 active_rows,
2141 highlighted_rows,
2142 highlighted_ranges,
2143 line_numbers,
2144 display_hunks,
2145 blocks,
2146 selections,
2147 context_menu,
2148 code_actions_indicator,
2149 fold_indicators,
2150 tab_invisible,
2151 space_invisible,
2152 hover_popovers: hover,
2153 }
2154 })
2155 }
2156
2157 #[allow(clippy::too_many_arguments)]
2158 fn layout_blocks(
2159 &self,
2160 rows: Range<u32>,
2161 snapshot: &EditorSnapshot,
2162 editor_width: Pixels,
2163 scroll_width: Pixels,
2164 gutter_padding: Pixels,
2165 gutter_width: Pixels,
2166 em_width: Pixels,
2167 text_x: Pixels,
2168 line_height: Pixels,
2169 style: &EditorStyle,
2170 line_layouts: &[LineWithInvisibles],
2171 editor: &mut Editor,
2172 cx: &mut ViewContext<Editor>,
2173 ) -> (Pixels, Vec<BlockLayout>) {
2174 let mut block_id = 0;
2175 let scroll_x = snapshot.scroll_anchor.offset.x;
2176 let (fixed_blocks, non_fixed_blocks) = snapshot
2177 .blocks_in_range(rows.clone())
2178 .partition::<Vec<_>, _>(|(_, block)| match block {
2179 TransformBlock::ExcerptHeader { .. } => false,
2180 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2181 });
2182
2183 let mut render_block = |block: &TransformBlock,
2184 available_space: Size<AvailableSpace>,
2185 block_id: usize,
2186 editor: &mut Editor,
2187 cx: &mut ViewContext<Editor>| {
2188 let mut element = match block {
2189 TransformBlock::Custom(block) => {
2190 let align_to = block
2191 .position()
2192 .to_point(&snapshot.buffer_snapshot)
2193 .to_display_point(snapshot);
2194 let anchor_x = text_x
2195 + if rows.contains(&align_to.row()) {
2196 line_layouts[(align_to.row() - rows.start) as usize]
2197 .line
2198 .x_for_index(align_to.column() as usize)
2199 } else {
2200 layout_line(align_to.row(), snapshot, style, cx)
2201 .unwrap()
2202 .x_for_index(align_to.column() as usize)
2203 };
2204
2205 block.render(&mut BlockContext {
2206 view_context: cx,
2207 anchor_x,
2208 gutter_padding,
2209 line_height,
2210 gutter_width,
2211 em_width,
2212 block_id,
2213 editor_style: &self.style,
2214 })
2215 }
2216
2217 TransformBlock::ExcerptHeader {
2218 buffer,
2219 range,
2220 starts_new_buffer,
2221 ..
2222 } => {
2223 let include_root = editor
2224 .project
2225 .as_ref()
2226 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2227 .unwrap_or_default();
2228
2229 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2230 let jump_path = ProjectPath {
2231 worktree_id: file.worktree_id(cx),
2232 path: file.path.clone(),
2233 };
2234 let jump_anchor = range
2235 .primary
2236 .as_ref()
2237 .map_or(range.context.start, |primary| primary.start);
2238 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2239
2240 let jump_handler = cx.listener_for(&self.editor, move |editor, e, cx| {
2241 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2242 });
2243
2244 jump_handler
2245 });
2246
2247 let element = if *starts_new_buffer {
2248 let path = buffer.resolve_file_path(cx, include_root);
2249 let mut filename = None;
2250 let mut parent_path = None;
2251 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2252 if let Some(path) = path {
2253 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2254 parent_path = path
2255 .parent()
2256 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2257 }
2258
2259 let is_open = true;
2260
2261 div().id("path header container").size_full().p_1p5().child(
2262 h_stack()
2263 .id("path header block")
2264 .py_1p5()
2265 .pl_3()
2266 .pr_2()
2267 .rounded_lg()
2268 .shadow_md()
2269 .border()
2270 .border_color(cx.theme().colors().border)
2271 .bg(cx.theme().colors().editor_subheader_background)
2272 .justify_between()
2273 .cursor_pointer()
2274 .hover(|style| style.bg(cx.theme().colors().element_hover))
2275 .on_click(cx.listener(|_editor, _event, _cx| {
2276 // TODO: Implement collapsing path headers
2277 todo!("Clicking path header")
2278 }))
2279 .child(
2280 h_stack()
2281 .gap_3()
2282 // TODO: Add open/close state and toggle action
2283 .child(
2284 div().border().border_color(gpui::red()).child(
2285 ButtonLike::new("path-header-disclosure-control")
2286 .style(ButtonStyle::Subtle)
2287 .child(IconElement::new(match is_open {
2288 true => Icon::ChevronDown,
2289 false => Icon::ChevronRight,
2290 })),
2291 ),
2292 )
2293 .child(
2294 h_stack()
2295 .gap_2()
2296 .child(Label::new(
2297 filename
2298 .map(SharedString::from)
2299 .unwrap_or_else(|| "untitled".into()),
2300 ))
2301 .when_some(parent_path, |then, path| {
2302 then.child(Label::new(path).color(Color::Muted))
2303 }),
2304 ),
2305 )
2306 .children(jump_handler.map(|jump_handler| {
2307 IconButton::new(block_id, Icon::ArrowUpRight)
2308 .style(ButtonStyle::Subtle)
2309 .on_click(jump_handler)
2310 .tooltip(|cx| {
2311 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2312 })
2313 })), // .p_x(gutter_padding)
2314 )
2315 } else {
2316 let text_style = style.text.clone();
2317 h_stack()
2318 .id("collapsed context")
2319 .size_full()
2320 .gap(gutter_padding)
2321 .child(
2322 h_stack()
2323 .justify_end()
2324 .flex_none()
2325 .w(gutter_width - gutter_padding)
2326 .h_full()
2327 .text_buffer(cx)
2328 .text_color(cx.theme().colors().editor_line_number)
2329 .child("..."),
2330 )
2331 .map(|this| {
2332 if let Some(jump_handler) = jump_handler {
2333 this.child(
2334 ButtonLike::new("jump to collapsed context")
2335 .style(ButtonStyle::Transparent)
2336 .full_width()
2337 .on_click(jump_handler)
2338 .tooltip(|cx| {
2339 Tooltip::for_action(
2340 "Jump to Buffer",
2341 &OpenExcerpts,
2342 cx,
2343 )
2344 })
2345 .child(
2346 div()
2347 .h_px()
2348 .w_full()
2349 .bg(cx.theme().colors().border_variant)
2350 .group_hover("", |style| {
2351 style.bg(cx.theme().colors().border)
2352 }),
2353 ),
2354 )
2355 } else {
2356 this.child(div().size_full().bg(gpui::green()))
2357 }
2358 })
2359 // .child("⋯")
2360 // .children(jump_icon) // .p_x(gutter_padding)
2361 };
2362 element.into_any()
2363 }
2364 };
2365
2366 let size = element.measure(available_space, cx);
2367 (element, size)
2368 };
2369
2370 let mut fixed_block_max_width = Pixels::ZERO;
2371 let mut blocks = Vec::new();
2372 for (row, block) in fixed_blocks {
2373 let available_space = size(
2374 AvailableSpace::MinContent,
2375 AvailableSpace::Definite(block.height() as f32 * line_height),
2376 );
2377 let (element, element_size) =
2378 render_block(block, available_space, block_id, editor, cx);
2379 block_id += 1;
2380 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2381 blocks.push(BlockLayout {
2382 row,
2383 element,
2384 available_space,
2385 style: BlockStyle::Fixed,
2386 });
2387 }
2388 for (row, block) in non_fixed_blocks {
2389 let style = match block {
2390 TransformBlock::Custom(block) => block.style(),
2391 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2392 };
2393 let width = match style {
2394 BlockStyle::Sticky => editor_width,
2395 BlockStyle::Flex => editor_width
2396 .max(fixed_block_max_width)
2397 .max(gutter_width + scroll_width),
2398 BlockStyle::Fixed => unreachable!(),
2399 };
2400 let available_space = size(
2401 AvailableSpace::Definite(width),
2402 AvailableSpace::Definite(block.height() as f32 * line_height),
2403 );
2404 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2405 block_id += 1;
2406 blocks.push(BlockLayout {
2407 row,
2408 element,
2409 available_space,
2410 style,
2411 });
2412 }
2413 (
2414 scroll_width.max(fixed_block_max_width - gutter_width),
2415 blocks,
2416 )
2417 }
2418
2419 fn paint_mouse_listeners(
2420 &mut self,
2421 bounds: Bounds<Pixels>,
2422 gutter_bounds: Bounds<Pixels>,
2423 text_bounds: Bounds<Pixels>,
2424 layout: &LayoutState,
2425 cx: &mut WindowContext,
2426 ) {
2427 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
2428 let interactive_bounds = InteractiveBounds {
2429 bounds: bounds.intersect(&cx.content_mask().bounds),
2430 stacking_order: cx.stacking_order().clone(),
2431 };
2432
2433 cx.on_mouse_event({
2434 let position_map = layout.position_map.clone();
2435 let editor = self.editor.clone();
2436 let interactive_bounds = interactive_bounds.clone();
2437
2438 move |event: &ScrollWheelEvent, phase, cx| {
2439 if phase != DispatchPhase::Bubble {
2440 return;
2441 }
2442
2443 let handled = editor.update(cx, |editor, cx| {
2444 Self::scroll(editor, event, &position_map, &interactive_bounds, cx)
2445 });
2446 if handled {
2447 cx.stop_propagation();
2448 }
2449 }
2450 });
2451
2452 cx.on_mouse_event({
2453 let position_map = layout.position_map.clone();
2454 let editor = self.editor.clone();
2455 let stacking_order = cx.stacking_order().clone();
2456
2457 move |event: &MouseDownEvent, phase, cx| {
2458 if phase != DispatchPhase::Bubble {
2459 return;
2460 }
2461
2462 let handled = match event.button {
2463 MouseButton::Left => editor.update(cx, |editor, cx| {
2464 Self::mouse_left_down(
2465 editor,
2466 event,
2467 &position_map,
2468 text_bounds,
2469 gutter_bounds,
2470 &stacking_order,
2471 cx,
2472 )
2473 }),
2474 MouseButton::Right => editor.update(cx, |editor, cx| {
2475 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx)
2476 }),
2477 _ => false,
2478 };
2479
2480 if handled {
2481 cx.stop_propagation()
2482 }
2483 }
2484 });
2485
2486 cx.on_mouse_event({
2487 let position_map = layout.position_map.clone();
2488 let editor = self.editor.clone();
2489 let stacking_order = cx.stacking_order().clone();
2490
2491 move |event: &MouseUpEvent, phase, cx| {
2492 let handled = editor.update(cx, |editor, cx| {
2493 Self::mouse_up(
2494 editor,
2495 event,
2496 &position_map,
2497 text_bounds,
2498 &stacking_order,
2499 cx,
2500 )
2501 });
2502
2503 if handled {
2504 cx.stop_propagation()
2505 }
2506 }
2507 });
2508 cx.on_mouse_event({
2509 let position_map = layout.position_map.clone();
2510 let editor = self.editor.clone();
2511 let stacking_order = cx.stacking_order().clone();
2512
2513 move |event: &MouseMoveEvent, phase, cx| {
2514 if phase != DispatchPhase::Bubble {
2515 return;
2516 }
2517
2518 let stop_propogating = editor.update(cx, |editor, cx| {
2519 Self::mouse_moved(
2520 editor,
2521 event,
2522 &position_map,
2523 text_bounds,
2524 gutter_bounds,
2525 &stacking_order,
2526 cx,
2527 )
2528 });
2529
2530 if stop_propogating {
2531 cx.stop_propagation()
2532 }
2533 }
2534 });
2535 }
2536}
2537
2538#[derive(Debug)]
2539pub struct LineWithInvisibles {
2540 pub line: ShapedLine,
2541 invisibles: Vec<Invisible>,
2542}
2543
2544impl LineWithInvisibles {
2545 fn from_chunks<'a>(
2546 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2547 text_style: &TextStyle,
2548 max_line_len: usize,
2549 max_line_count: usize,
2550 line_number_layouts: &[Option<ShapedLine>],
2551 editor_mode: EditorMode,
2552 cx: &WindowContext,
2553 ) -> Vec<Self> {
2554 let mut layouts = Vec::with_capacity(max_line_count);
2555 let mut line = String::new();
2556 let mut invisibles = Vec::new();
2557 let mut styles = Vec::new();
2558 let mut non_whitespace_added = false;
2559 let mut row = 0;
2560 let mut line_exceeded_max_len = false;
2561 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2562
2563 for highlighted_chunk in chunks.chain([HighlightedChunk {
2564 chunk: "\n",
2565 style: None,
2566 is_tab: false,
2567 }]) {
2568 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2569 if ix > 0 {
2570 let shaped_line = cx
2571 .text_system()
2572 .shape_line(line.clone().into(), font_size, &styles)
2573 .unwrap();
2574 layouts.push(Self {
2575 line: shaped_line,
2576 invisibles: invisibles.drain(..).collect(),
2577 });
2578
2579 line.clear();
2580 styles.clear();
2581 row += 1;
2582 line_exceeded_max_len = false;
2583 non_whitespace_added = false;
2584 if row == max_line_count {
2585 return layouts;
2586 }
2587 }
2588
2589 if !line_chunk.is_empty() && !line_exceeded_max_len {
2590 let text_style = if let Some(style) = highlighted_chunk.style {
2591 Cow::Owned(text_style.clone().highlight(style))
2592 } else {
2593 Cow::Borrowed(text_style)
2594 };
2595
2596 if line.len() + line_chunk.len() > max_line_len {
2597 let mut chunk_len = max_line_len - line.len();
2598 while !line_chunk.is_char_boundary(chunk_len) {
2599 chunk_len -= 1;
2600 }
2601 line_chunk = &line_chunk[..chunk_len];
2602 line_exceeded_max_len = true;
2603 }
2604
2605 styles.push(TextRun {
2606 len: line_chunk.len(),
2607 font: text_style.font(),
2608 color: text_style.color,
2609 background_color: text_style.background_color,
2610 underline: text_style.underline,
2611 });
2612
2613 if editor_mode == EditorMode::Full {
2614 // Line wrap pads its contents with fake whitespaces,
2615 // avoid printing them
2616 let inside_wrapped_string = line_number_layouts
2617 .get(row)
2618 .and_then(|layout| layout.as_ref())
2619 .is_none();
2620 if highlighted_chunk.is_tab {
2621 if non_whitespace_added || !inside_wrapped_string {
2622 invisibles.push(Invisible::Tab {
2623 line_start_offset: line.len(),
2624 });
2625 }
2626 } else {
2627 invisibles.extend(
2628 line_chunk
2629 .chars()
2630 .enumerate()
2631 .filter(|(_, line_char)| {
2632 let is_whitespace = line_char.is_whitespace();
2633 non_whitespace_added |= !is_whitespace;
2634 is_whitespace
2635 && (non_whitespace_added || !inside_wrapped_string)
2636 })
2637 .map(|(whitespace_index, _)| Invisible::Whitespace {
2638 line_offset: line.len() + whitespace_index,
2639 }),
2640 )
2641 }
2642 }
2643
2644 line.push_str(line_chunk);
2645 }
2646 }
2647 }
2648
2649 layouts
2650 }
2651
2652 fn draw(
2653 &self,
2654 layout: &LayoutState,
2655 row: u32,
2656 content_origin: gpui::Point<Pixels>,
2657 whitespace_setting: ShowWhitespaceSetting,
2658 selection_ranges: &[Range<DisplayPoint>],
2659 cx: &mut WindowContext,
2660 ) {
2661 let line_height = layout.position_map.line_height;
2662 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2663
2664 self.line.paint(
2665 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2666 line_height,
2667 cx,
2668 );
2669
2670 self.draw_invisibles(
2671 &selection_ranges,
2672 layout,
2673 content_origin,
2674 line_y,
2675 row,
2676 line_height,
2677 whitespace_setting,
2678 cx,
2679 );
2680 }
2681
2682 fn draw_invisibles(
2683 &self,
2684 selection_ranges: &[Range<DisplayPoint>],
2685 layout: &LayoutState,
2686 content_origin: gpui::Point<Pixels>,
2687 line_y: Pixels,
2688 row: u32,
2689 line_height: Pixels,
2690 whitespace_setting: ShowWhitespaceSetting,
2691 cx: &mut WindowContext,
2692 ) {
2693 let allowed_invisibles_regions = match whitespace_setting {
2694 ShowWhitespaceSetting::None => return,
2695 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2696 ShowWhitespaceSetting::All => None,
2697 };
2698
2699 for invisible in &self.invisibles {
2700 let (&token_offset, invisible_symbol) = match invisible {
2701 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2702 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2703 };
2704
2705 let x_offset = self.line.x_for_index(token_offset);
2706 let invisible_offset =
2707 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2708 let origin = content_origin
2709 + gpui::point(
2710 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2711 line_y,
2712 );
2713
2714 if let Some(allowed_regions) = allowed_invisibles_regions {
2715 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2716 if !allowed_regions
2717 .iter()
2718 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2719 {
2720 continue;
2721 }
2722 }
2723 invisible_symbol.paint(origin, line_height, cx);
2724 }
2725 }
2726}
2727
2728#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2729enum Invisible {
2730 Tab { line_start_offset: usize },
2731 Whitespace { line_offset: usize },
2732}
2733
2734impl Element for EditorElement {
2735 type State = ();
2736
2737 fn layout(
2738 &mut self,
2739 element_state: Option<Self::State>,
2740 cx: &mut gpui::WindowContext,
2741 ) -> (gpui::LayoutId, Self::State) {
2742 self.editor.update(cx, |editor, cx| {
2743 editor.set_style(self.style.clone(), cx);
2744
2745 let layout_id = match editor.mode {
2746 EditorMode::SingleLine => {
2747 let rem_size = cx.rem_size();
2748 let mut style = Style::default();
2749 style.size.width = relative(1.).into();
2750 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2751 cx.request_layout(&style, None)
2752 }
2753 EditorMode::AutoHeight { max_lines } => {
2754 let editor_handle = cx.view().clone();
2755 let max_line_number_width =
2756 self.max_line_number_width(&editor.snapshot(cx), cx);
2757 cx.request_measured_layout(
2758 Style::default(),
2759 move |known_dimensions, available_space, cx| {
2760 editor_handle
2761 .update(cx, |editor, cx| {
2762 compute_auto_height_layout(
2763 editor,
2764 max_lines,
2765 max_line_number_width,
2766 known_dimensions,
2767 cx,
2768 )
2769 })
2770 .unwrap_or_default()
2771 },
2772 )
2773 }
2774 EditorMode::Full => {
2775 let mut style = Style::default();
2776 style.size.width = relative(1.).into();
2777 style.size.height = relative(1.).into();
2778 cx.request_layout(&style, None)
2779 }
2780 };
2781
2782 (layout_id, ())
2783 })
2784 }
2785
2786 fn paint(
2787 mut self,
2788 bounds: Bounds<gpui::Pixels>,
2789 element_state: &mut Self::State,
2790 cx: &mut gpui::WindowContext,
2791 ) {
2792 let editor = self.editor.clone();
2793
2794 let mut layout = self.compute_layout(bounds, cx);
2795 let gutter_bounds = Bounds {
2796 origin: bounds.origin,
2797 size: layout.gutter_size,
2798 };
2799 let text_bounds = Bounds {
2800 origin: gutter_bounds.upper_right(),
2801 size: layout.text_size,
2802 };
2803
2804 let focus_handle = editor.focus_handle(cx);
2805 let dispatch_context = self.editor.read(cx).dispatch_context(cx);
2806 cx.with_key_dispatch(dispatch_context, Some(focus_handle.clone()), |_, cx| {
2807 self.register_actions(cx);
2808 self.register_key_listeners(cx);
2809
2810 // We call with_z_index to establish a new stacking context.
2811 cx.with_z_index(0, |cx| {
2812 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2813 // Paint mouse listeners at z-index 0 so any elements we paint on top of the editor
2814 // take precedence.
2815 cx.with_z_index(0, |cx| {
2816 self.paint_mouse_listeners(bounds, gutter_bounds, text_bounds, &layout, cx);
2817 });
2818 let input_handler = ElementInputHandler::new(bounds, self.editor.clone(), cx);
2819 cx.handle_input(&focus_handle, input_handler);
2820
2821 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2822 if layout.gutter_size.width > Pixels::ZERO {
2823 self.paint_gutter(gutter_bounds, &mut layout, cx);
2824 }
2825 self.paint_text(text_bounds, &mut layout, cx);
2826
2827 if !layout.blocks.is_empty() {
2828 cx.with_element_id(Some("editor_blocks"), |cx| {
2829 self.paint_blocks(bounds, &mut layout, cx);
2830 })
2831 }
2832 });
2833 });
2834 })
2835 }
2836}
2837
2838impl IntoElement for EditorElement {
2839 type Element = Self;
2840
2841 fn element_id(&self) -> Option<gpui::ElementId> {
2842 self.editor.element_id()
2843 }
2844
2845 fn into_element(self) -> Self::Element {
2846 self
2847 }
2848}
2849
2850type BufferRow = u32;
2851
2852pub struct LayoutState {
2853 position_map: Arc<PositionMap>,
2854 gutter_size: Size<Pixels>,
2855 gutter_padding: Pixels,
2856 gutter_margin: Pixels,
2857 text_size: gpui::Size<Pixels>,
2858 mode: EditorMode,
2859 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
2860 visible_anchor_range: Range<Anchor>,
2861 visible_display_row_range: Range<u32>,
2862 active_rows: BTreeMap<u32, bool>,
2863 highlighted_rows: Option<Range<u32>>,
2864 line_numbers: Vec<Option<ShapedLine>>,
2865 display_hunks: Vec<DisplayDiffHunk>,
2866 blocks: Vec<BlockLayout>,
2867 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
2868 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
2869 scrollbar_row_range: Range<f32>,
2870 show_scrollbars: bool,
2871 is_singleton: bool,
2872 max_row: u32,
2873 context_menu: Option<(DisplayPoint, AnyElement)>,
2874 code_actions_indicator: Option<CodeActionsIndicator>,
2875 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
2876 fold_indicators: Vec<Option<IconButton>>,
2877 tab_invisible: ShapedLine,
2878 space_invisible: ShapedLine,
2879}
2880
2881struct CodeActionsIndicator {
2882 row: u32,
2883 button: IconButton,
2884}
2885
2886struct PositionMap {
2887 size: Size<Pixels>,
2888 line_height: Pixels,
2889 scroll_position: gpui::Point<Pixels>,
2890 scroll_max: gpui::Point<f32>,
2891 em_width: Pixels,
2892 em_advance: Pixels,
2893 line_layouts: Vec<LineWithInvisibles>,
2894 snapshot: EditorSnapshot,
2895}
2896
2897#[derive(Debug, Copy, Clone)]
2898pub struct PointForPosition {
2899 pub previous_valid: DisplayPoint,
2900 pub next_valid: DisplayPoint,
2901 pub exact_unclipped: DisplayPoint,
2902 pub column_overshoot_after_line_end: u32,
2903}
2904
2905impl PointForPosition {
2906 #[cfg(test)]
2907 pub fn valid(valid: DisplayPoint) -> Self {
2908 Self {
2909 previous_valid: valid,
2910 next_valid: valid,
2911 exact_unclipped: valid,
2912 column_overshoot_after_line_end: 0,
2913 }
2914 }
2915
2916 pub fn as_valid(&self) -> Option<DisplayPoint> {
2917 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
2918 Some(self.previous_valid)
2919 } else {
2920 None
2921 }
2922 }
2923}
2924
2925impl PositionMap {
2926 fn point_for_position(
2927 &self,
2928 text_bounds: Bounds<Pixels>,
2929 position: gpui::Point<Pixels>,
2930 ) -> PointForPosition {
2931 let scroll_position = self.snapshot.scroll_position();
2932 let position = position - text_bounds.origin;
2933 let y = position.y.max(px(0.)).min(self.size.width);
2934 let x = position.x + (scroll_position.x * self.em_width);
2935 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
2936
2937 let (column, x_overshoot_after_line_end) = if let Some(line) = self
2938 .line_layouts
2939 .get(row as usize - scroll_position.y as usize)
2940 .map(|&LineWithInvisibles { ref line, .. }| line)
2941 {
2942 if let Some(ix) = line.index_for_x(x) {
2943 (ix as u32, px(0.))
2944 } else {
2945 (line.len as u32, px(0.).max(x - line.width))
2946 }
2947 } else {
2948 (0, x)
2949 };
2950
2951 let mut exact_unclipped = DisplayPoint::new(row, column);
2952 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
2953 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
2954
2955 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
2956 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
2957 PointForPosition {
2958 previous_valid,
2959 next_valid,
2960 exact_unclipped,
2961 column_overshoot_after_line_end,
2962 }
2963 }
2964}
2965
2966struct BlockLayout {
2967 row: u32,
2968 element: AnyElement,
2969 available_space: Size<AvailableSpace>,
2970 style: BlockStyle,
2971}
2972
2973fn layout_line(
2974 row: u32,
2975 snapshot: &EditorSnapshot,
2976 style: &EditorStyle,
2977 cx: &WindowContext,
2978) -> Result<ShapedLine> {
2979 let mut line = snapshot.line(row);
2980
2981 if line.len() > MAX_LINE_LEN {
2982 let mut len = MAX_LINE_LEN;
2983 while !line.is_char_boundary(len) {
2984 len -= 1;
2985 }
2986
2987 line.truncate(len);
2988 }
2989
2990 cx.text_system().shape_line(
2991 line.into(),
2992 style.text.font_size.to_pixels(cx.rem_size()),
2993 &[TextRun {
2994 len: snapshot.line_len(row) as usize,
2995 font: style.text.font(),
2996 color: Hsla::default(),
2997 background_color: None,
2998 underline: None,
2999 }],
3000 )
3001}
3002
3003#[derive(Debug)]
3004pub struct Cursor {
3005 origin: gpui::Point<Pixels>,
3006 block_width: Pixels,
3007 line_height: Pixels,
3008 color: Hsla,
3009 shape: CursorShape,
3010 block_text: Option<ShapedLine>,
3011}
3012
3013impl Cursor {
3014 pub fn new(
3015 origin: gpui::Point<Pixels>,
3016 block_width: Pixels,
3017 line_height: Pixels,
3018 color: Hsla,
3019 shape: CursorShape,
3020 block_text: Option<ShapedLine>,
3021 ) -> Cursor {
3022 Cursor {
3023 origin,
3024 block_width,
3025 line_height,
3026 color,
3027 shape,
3028 block_text,
3029 }
3030 }
3031
3032 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3033 Bounds {
3034 origin: self.origin + origin,
3035 size: size(self.block_width, self.line_height),
3036 }
3037 }
3038
3039 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3040 let bounds = match self.shape {
3041 CursorShape::Bar => Bounds {
3042 origin: self.origin + origin,
3043 size: size(px(2.0), self.line_height),
3044 },
3045 CursorShape::Block | CursorShape::Hollow => Bounds {
3046 origin: self.origin + origin,
3047 size: size(self.block_width, self.line_height),
3048 },
3049 CursorShape::Underscore => Bounds {
3050 origin: self.origin
3051 + origin
3052 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3053 size: size(self.block_width, px(2.0)),
3054 },
3055 };
3056
3057 //Draw background or border quad
3058 if matches!(self.shape, CursorShape::Hollow) {
3059 cx.paint_quad(
3060 bounds,
3061 Corners::default(),
3062 transparent_black(),
3063 Edges::all(px(1.)),
3064 self.color,
3065 );
3066 } else {
3067 cx.paint_quad(
3068 bounds,
3069 Corners::default(),
3070 self.color,
3071 Edges::default(),
3072 transparent_black(),
3073 );
3074 }
3075
3076 if let Some(block_text) = &self.block_text {
3077 block_text.paint(self.origin + origin, self.line_height, cx);
3078 }
3079 }
3080
3081 pub fn shape(&self) -> CursorShape {
3082 self.shape
3083 }
3084}
3085
3086#[derive(Debug)]
3087pub struct HighlightedRange {
3088 pub start_y: Pixels,
3089 pub line_height: Pixels,
3090 pub lines: Vec<HighlightedRangeLine>,
3091 pub color: Hsla,
3092 pub corner_radius: Pixels,
3093}
3094
3095#[derive(Debug)]
3096pub struct HighlightedRangeLine {
3097 pub start_x: Pixels,
3098 pub end_x: Pixels,
3099}
3100
3101impl HighlightedRange {
3102 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3103 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3104 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3105 self.paint_lines(
3106 self.start_y + self.line_height,
3107 &self.lines[1..],
3108 bounds,
3109 cx,
3110 );
3111 } else {
3112 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3113 }
3114 }
3115
3116 fn paint_lines(
3117 &self,
3118 start_y: Pixels,
3119 lines: &[HighlightedRangeLine],
3120 bounds: Bounds<Pixels>,
3121 cx: &mut WindowContext,
3122 ) {
3123 if lines.is_empty() {
3124 return;
3125 }
3126
3127 let first_line = lines.first().unwrap();
3128 let last_line = lines.last().unwrap();
3129
3130 let first_top_left = point(first_line.start_x, start_y);
3131 let first_top_right = point(first_line.end_x, start_y);
3132
3133 let curve_height = point(Pixels::ZERO, self.corner_radius);
3134 let curve_width = |start_x: Pixels, end_x: Pixels| {
3135 let max = (end_x - start_x) / 2.;
3136 let width = if max < self.corner_radius {
3137 max
3138 } else {
3139 self.corner_radius
3140 };
3141
3142 point(width, Pixels::ZERO)
3143 };
3144
3145 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3146 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3147 path.curve_to(first_top_right + curve_height, first_top_right);
3148
3149 let mut iter = lines.iter().enumerate().peekable();
3150 while let Some((ix, line)) = iter.next() {
3151 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3152
3153 if let Some((_, next_line)) = iter.peek() {
3154 let next_top_right = point(next_line.end_x, bottom_right.y);
3155
3156 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3157 Ordering::Equal => {
3158 path.line_to(bottom_right);
3159 }
3160 Ordering::Less => {
3161 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3162 path.line_to(bottom_right - curve_height);
3163 if self.corner_radius > Pixels::ZERO {
3164 path.curve_to(bottom_right - curve_width, bottom_right);
3165 }
3166 path.line_to(next_top_right + curve_width);
3167 if self.corner_radius > Pixels::ZERO {
3168 path.curve_to(next_top_right + curve_height, next_top_right);
3169 }
3170 }
3171 Ordering::Greater => {
3172 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3173 path.line_to(bottom_right - curve_height);
3174 if self.corner_radius > Pixels::ZERO {
3175 path.curve_to(bottom_right + curve_width, bottom_right);
3176 }
3177 path.line_to(next_top_right - curve_width);
3178 if self.corner_radius > Pixels::ZERO {
3179 path.curve_to(next_top_right + curve_height, next_top_right);
3180 }
3181 }
3182 }
3183 } else {
3184 let curve_width = curve_width(line.start_x, line.end_x);
3185 path.line_to(bottom_right - curve_height);
3186 if self.corner_radius > Pixels::ZERO {
3187 path.curve_to(bottom_right - curve_width, bottom_right);
3188 }
3189
3190 let bottom_left = point(line.start_x, bottom_right.y);
3191 path.line_to(bottom_left + curve_width);
3192 if self.corner_radius > Pixels::ZERO {
3193 path.curve_to(bottom_left - curve_height, bottom_left);
3194 }
3195 }
3196 }
3197
3198 if first_line.start_x > last_line.start_x {
3199 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3200 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3201 path.line_to(second_top_left + curve_height);
3202 if self.corner_radius > Pixels::ZERO {
3203 path.curve_to(second_top_left + curve_width, second_top_left);
3204 }
3205 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3206 path.line_to(first_bottom_left - curve_width);
3207 if self.corner_radius > Pixels::ZERO {
3208 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3209 }
3210 }
3211
3212 path.line_to(first_top_left + curve_height);
3213 if self.corner_radius > Pixels::ZERO {
3214 path.curve_to(first_top_left + top_curve_width, first_top_left);
3215 }
3216 path.line_to(first_top_right - top_curve_width);
3217
3218 cx.paint_path(path, self.color);
3219 }
3220}
3221
3222pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3223 (delta.pow(1.5) / 100.0).into()
3224}
3225
3226fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3227 (delta.pow(1.2) / 300.0).into()
3228}
3229
3230#[cfg(test)]
3231mod tests {
3232 use super::*;
3233 use crate::{
3234 display_map::{BlockDisposition, BlockProperties},
3235 editor_tests::{init_test, update_test_language_settings},
3236 Editor, MultiBuffer,
3237 };
3238 use gpui::{EmptyView, TestAppContext};
3239 use language::language_settings;
3240 use log::info;
3241 use std::{num::NonZeroU32, sync::Arc};
3242 use util::test::sample_text;
3243
3244 #[gpui::test]
3245 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3246 init_test(cx, |_| {});
3247 let window = cx.add_window(|cx| {
3248 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3249 Editor::new(EditorMode::Full, buffer, None, cx)
3250 });
3251
3252 let editor = window.root(cx).unwrap();
3253 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3254 let element = EditorElement::new(&editor, style);
3255
3256 let layouts = window
3257 .update(cx, |editor, cx| {
3258 let snapshot = editor.snapshot(cx);
3259 element
3260 .shape_line_numbers(
3261 0..6,
3262 &Default::default(),
3263 DisplayPoint::new(0, 0),
3264 false,
3265 &snapshot,
3266 cx,
3267 )
3268 .0
3269 })
3270 .unwrap();
3271 assert_eq!(layouts.len(), 6);
3272
3273 let relative_rows = window
3274 .update(cx, |editor, cx| {
3275 let snapshot = editor.snapshot(cx);
3276 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3277 })
3278 .unwrap();
3279 assert_eq!(relative_rows[&0], 3);
3280 assert_eq!(relative_rows[&1], 2);
3281 assert_eq!(relative_rows[&2], 1);
3282 // current line has no relative number
3283 assert_eq!(relative_rows[&4], 1);
3284 assert_eq!(relative_rows[&5], 2);
3285
3286 // works if cursor is before screen
3287 let relative_rows = window
3288 .update(cx, |editor, cx| {
3289 let snapshot = editor.snapshot(cx);
3290
3291 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3292 })
3293 .unwrap();
3294 assert_eq!(relative_rows.len(), 3);
3295 assert_eq!(relative_rows[&3], 2);
3296 assert_eq!(relative_rows[&4], 3);
3297 assert_eq!(relative_rows[&5], 4);
3298
3299 // works if cursor is after screen
3300 let relative_rows = window
3301 .update(cx, |editor, cx| {
3302 let snapshot = editor.snapshot(cx);
3303
3304 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3305 })
3306 .unwrap();
3307 assert_eq!(relative_rows.len(), 3);
3308 assert_eq!(relative_rows[&0], 5);
3309 assert_eq!(relative_rows[&1], 4);
3310 assert_eq!(relative_rows[&2], 3);
3311 }
3312
3313 #[gpui::test]
3314 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3315 init_test(cx, |_| {});
3316
3317 let window = cx.add_window(|cx| {
3318 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3319 Editor::new(EditorMode::Full, buffer, None, cx)
3320 });
3321 let editor = window.root(cx).unwrap();
3322 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3323 let mut element = EditorElement::new(&editor, style);
3324
3325 window
3326 .update(cx, |editor, cx| {
3327 editor.cursor_shape = CursorShape::Block;
3328 editor.change_selections(None, cx, |s| {
3329 s.select_ranges([
3330 Point::new(0, 0)..Point::new(1, 0),
3331 Point::new(3, 2)..Point::new(3, 3),
3332 Point::new(5, 6)..Point::new(6, 0),
3333 ]);
3334 });
3335 })
3336 .unwrap();
3337 let state = cx
3338 .update_window(window.into(), |_, cx| {
3339 element.compute_layout(
3340 Bounds {
3341 origin: point(px(500.), px(500.)),
3342 size: size(px(500.), px(500.)),
3343 },
3344 cx,
3345 )
3346 })
3347 .unwrap();
3348
3349 assert_eq!(state.selections.len(), 1);
3350 let local_selections = &state.selections[0].1;
3351 assert_eq!(local_selections.len(), 3);
3352 // moves cursor back one line
3353 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3354 assert_eq!(
3355 local_selections[0].range,
3356 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3357 );
3358
3359 // moves cursor back one column
3360 assert_eq!(
3361 local_selections[1].range,
3362 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3363 );
3364 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3365
3366 // leaves cursor on the max point
3367 assert_eq!(
3368 local_selections[2].range,
3369 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3370 );
3371 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3372
3373 // active lines does not include 1 (even though the range of the selection does)
3374 assert_eq!(
3375 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3376 vec![0, 3, 5, 6]
3377 );
3378
3379 // multi-buffer support
3380 // in DisplayPoint co-ordinates, this is what we're dealing with:
3381 // 0: [[file
3382 // 1: header]]
3383 // 2: aaaaaa
3384 // 3: bbbbbb
3385 // 4: cccccc
3386 // 5:
3387 // 6: ...
3388 // 7: ffffff
3389 // 8: gggggg
3390 // 9: hhhhhh
3391 // 10:
3392 // 11: [[file
3393 // 12: header]]
3394 // 13: bbbbbb
3395 // 14: cccccc
3396 // 15: dddddd
3397 let window = cx.add_window(|cx| {
3398 let buffer = MultiBuffer::build_multi(
3399 [
3400 (
3401 &(sample_text(8, 6, 'a') + "\n"),
3402 vec![
3403 Point::new(0, 0)..Point::new(3, 0),
3404 Point::new(4, 0)..Point::new(7, 0),
3405 ],
3406 ),
3407 (
3408 &(sample_text(8, 6, 'a') + "\n"),
3409 vec![Point::new(1, 0)..Point::new(3, 0)],
3410 ),
3411 ],
3412 cx,
3413 );
3414 Editor::new(EditorMode::Full, buffer, None, cx)
3415 });
3416 let editor = window.root(cx).unwrap();
3417 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3418 let mut element = EditorElement::new(&editor, style);
3419 let state = window.update(cx, |editor, cx| {
3420 editor.cursor_shape = CursorShape::Block;
3421 editor.change_selections(None, cx, |s| {
3422 s.select_display_ranges([
3423 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3424 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3425 ]);
3426 });
3427 });
3428
3429 let state = cx
3430 .update_window(window.into(), |_, cx| {
3431 element.compute_layout(
3432 Bounds {
3433 origin: point(px(500.), px(500.)),
3434 size: size(px(500.), px(500.)),
3435 },
3436 cx,
3437 )
3438 })
3439 .unwrap();
3440 assert_eq!(state.selections.len(), 1);
3441 let local_selections = &state.selections[0].1;
3442 assert_eq!(local_selections.len(), 2);
3443
3444 // moves cursor on excerpt boundary back a line
3445 // and doesn't allow selection to bleed through
3446 assert_eq!(
3447 local_selections[0].range,
3448 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3449 );
3450 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3451 dbg!("Hi");
3452 // moves cursor on buffer boundary back two lines
3453 // and doesn't allow selection to bleed through
3454 assert_eq!(
3455 local_selections[1].range,
3456 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3457 );
3458 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3459 }
3460
3461 #[gpui::test]
3462 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3463 init_test(cx, |_| {});
3464
3465 let window = cx.add_window(|cx| {
3466 let buffer = MultiBuffer::build_simple("", cx);
3467 Editor::new(EditorMode::Full, buffer, None, cx)
3468 });
3469 let editor = window.root(cx).unwrap();
3470 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3471 window
3472 .update(cx, |editor, cx| {
3473 editor.set_placeholder_text("hello", cx);
3474 editor.insert_blocks(
3475 [BlockProperties {
3476 style: BlockStyle::Fixed,
3477 disposition: BlockDisposition::Above,
3478 height: 3,
3479 position: Anchor::min(),
3480 render: Arc::new(|_| div().into_any()),
3481 }],
3482 None,
3483 cx,
3484 );
3485
3486 // Blur the editor so that it displays placeholder text.
3487 cx.blur();
3488 })
3489 .unwrap();
3490
3491 let mut element = EditorElement::new(&editor, style);
3492 let mut state = cx
3493 .update_window(window.into(), |_, cx| {
3494 element.compute_layout(
3495 Bounds {
3496 origin: point(px(500.), px(500.)),
3497 size: size(px(500.), px(500.)),
3498 },
3499 cx,
3500 )
3501 })
3502 .unwrap();
3503 let size = state.position_map.size;
3504
3505 assert_eq!(state.position_map.line_layouts.len(), 4);
3506 assert_eq!(
3507 state
3508 .line_numbers
3509 .iter()
3510 .map(Option::is_some)
3511 .collect::<Vec<_>>(),
3512 &[false, false, false, true]
3513 );
3514
3515 // Don't panic.
3516 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3517 cx.update_window(window.into(), |_, cx| {
3518 element.paint(bounds, &mut (), cx);
3519 })
3520 .unwrap()
3521 }
3522
3523 #[gpui::test]
3524 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3525 const TAB_SIZE: u32 = 4;
3526
3527 let input_text = "\t \t|\t| a b";
3528 let expected_invisibles = vec![
3529 Invisible::Tab {
3530 line_start_offset: 0,
3531 },
3532 Invisible::Whitespace {
3533 line_offset: TAB_SIZE as usize,
3534 },
3535 Invisible::Tab {
3536 line_start_offset: TAB_SIZE as usize + 1,
3537 },
3538 Invisible::Tab {
3539 line_start_offset: TAB_SIZE as usize * 2 + 1,
3540 },
3541 Invisible::Whitespace {
3542 line_offset: TAB_SIZE as usize * 3 + 1,
3543 },
3544 Invisible::Whitespace {
3545 line_offset: TAB_SIZE as usize * 3 + 3,
3546 },
3547 ];
3548 assert_eq!(
3549 expected_invisibles.len(),
3550 input_text
3551 .chars()
3552 .filter(|initial_char| initial_char.is_whitespace())
3553 .count(),
3554 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3555 );
3556
3557 init_test(cx, |s| {
3558 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3559 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3560 });
3561
3562 let actual_invisibles =
3563 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3564
3565 assert_eq!(expected_invisibles, actual_invisibles);
3566 }
3567
3568 #[gpui::test]
3569 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3570 init_test(cx, |s| {
3571 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3572 s.defaults.tab_size = NonZeroU32::new(4);
3573 });
3574
3575 for editor_mode_without_invisibles in [
3576 EditorMode::SingleLine,
3577 EditorMode::AutoHeight { max_lines: 100 },
3578 ] {
3579 let invisibles = collect_invisibles_from_new_editor(
3580 cx,
3581 editor_mode_without_invisibles,
3582 "\t\t\t| | a b",
3583 px(500.0),
3584 );
3585 assert!(invisibles.is_empty(),
3586 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3587 }
3588 }
3589
3590 #[gpui::test]
3591 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3592 let tab_size = 4;
3593 let input_text = "a\tbcd ".repeat(9);
3594 let repeated_invisibles = [
3595 Invisible::Tab {
3596 line_start_offset: 1,
3597 },
3598 Invisible::Whitespace {
3599 line_offset: tab_size as usize + 3,
3600 },
3601 Invisible::Whitespace {
3602 line_offset: tab_size as usize + 4,
3603 },
3604 Invisible::Whitespace {
3605 line_offset: tab_size as usize + 5,
3606 },
3607 ];
3608 let expected_invisibles = std::iter::once(repeated_invisibles)
3609 .cycle()
3610 .take(9)
3611 .flatten()
3612 .collect::<Vec<_>>();
3613 assert_eq!(
3614 expected_invisibles.len(),
3615 input_text
3616 .chars()
3617 .filter(|initial_char| initial_char.is_whitespace())
3618 .count(),
3619 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3620 );
3621 info!("Expected invisibles: {expected_invisibles:?}");
3622
3623 init_test(cx, |_| {});
3624
3625 // Put the same string with repeating whitespace pattern into editors of various size,
3626 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3627 let resize_step = 10.0;
3628 let mut editor_width = 200.0;
3629 while editor_width <= 1000.0 {
3630 update_test_language_settings(cx, |s| {
3631 s.defaults.tab_size = NonZeroU32::new(tab_size);
3632 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3633 s.defaults.preferred_line_length = Some(editor_width as u32);
3634 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3635 });
3636
3637 let actual_invisibles = collect_invisibles_from_new_editor(
3638 cx,
3639 EditorMode::Full,
3640 &input_text,
3641 px(editor_width),
3642 );
3643
3644 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3645 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3646 let mut i = 0;
3647 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3648 i = actual_index;
3649 match expected_invisibles.get(i) {
3650 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3651 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3652 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3653 _ => {
3654 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3655 }
3656 },
3657 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3658 }
3659 }
3660 let missing_expected_invisibles = &expected_invisibles[i + 1..];
3661 assert!(
3662 missing_expected_invisibles.is_empty(),
3663 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3664 );
3665
3666 editor_width += resize_step;
3667 }
3668 }
3669
3670 fn collect_invisibles_from_new_editor(
3671 cx: &mut TestAppContext,
3672 editor_mode: EditorMode,
3673 input_text: &str,
3674 editor_width: Pixels,
3675 ) -> Vec<Invisible> {
3676 info!(
3677 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
3678 editor_width.0
3679 );
3680 let window = cx.add_window(|cx| {
3681 let buffer = MultiBuffer::build_simple(&input_text, cx);
3682 Editor::new(editor_mode, buffer, None, cx)
3683 });
3684 let editor = window.root(cx).unwrap();
3685 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3686 let mut element = EditorElement::new(&editor, style);
3687 window
3688 .update(cx, |editor, cx| {
3689 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3690 editor.set_wrap_width(Some(editor_width), cx);
3691 })
3692 .unwrap();
3693 let layout_state = cx
3694 .update_window(window.into(), |_, cx| {
3695 element.compute_layout(
3696 Bounds {
3697 origin: point(px(500.), px(500.)),
3698 size: size(px(500.), px(500.)),
3699 },
3700 cx,
3701 )
3702 })
3703 .unwrap();
3704
3705 layout_state
3706 .position_map
3707 .line_layouts
3708 .iter()
3709 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3710 .flatten()
3711 .cloned()
3712 .collect()
3713 }
3714}
3715
3716pub fn register_action<T: Action>(
3717 view: &View<Editor>,
3718 cx: &mut WindowContext,
3719 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
3720) {
3721 let view = view.clone();
3722 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
3723 let action = action.downcast_ref().unwrap();
3724 if phase == DispatchPhase::Bubble {
3725 view.update(cx, |editor, cx| {
3726 listener(editor, action, cx);
3727 })
3728 }
3729 })
3730}
3731
3732fn compute_auto_height_layout(
3733 editor: &mut Editor,
3734 max_lines: usize,
3735 max_line_number_width: Pixels,
3736 known_dimensions: Size<Option<Pixels>>,
3737 cx: &mut ViewContext<Editor>,
3738) -> Option<Size<Pixels>> {
3739 let mut width = known_dimensions.width?;
3740 if let Some(height) = known_dimensions.height {
3741 return Some(size(width, height));
3742 }
3743
3744 let style = editor.style.as_ref().unwrap();
3745 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
3746 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3747 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3748 let em_width = cx
3749 .text_system()
3750 .typographic_bounds(font_id, font_size, 'm')
3751 .unwrap()
3752 .size
3753 .width;
3754
3755 let mut snapshot = editor.snapshot(cx);
3756 let gutter_padding;
3757 let gutter_width;
3758 let gutter_margin;
3759 if snapshot.show_gutter {
3760 let descent = cx.text_system().descent(font_id, font_size);
3761 let gutter_padding_factor = 3.5;
3762 gutter_padding = (em_width * gutter_padding_factor).round();
3763 gutter_width = max_line_number_width + gutter_padding * 2.0;
3764 gutter_margin = -descent;
3765 } else {
3766 gutter_padding = Pixels::ZERO;
3767 gutter_width = Pixels::ZERO;
3768 gutter_margin = Pixels::ZERO;
3769 };
3770
3771 editor.gutter_width = gutter_width;
3772 let text_width = width - gutter_width;
3773 let overscroll = size(em_width, px(0.));
3774
3775 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
3776 if editor.set_wrap_width(Some(editor_width), cx) {
3777 snapshot = editor.snapshot(cx);
3778 }
3779
3780 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
3781 let height = scroll_height
3782 .max(line_height)
3783 .min(line_height * max_lines as f32);
3784
3785 Some(size(width, height))
3786}