1mod block_map;
2mod fold_map;
3mod tab_map;
4mod wrap_map;
5
6use crate::{Anchor, AnchorRangeExt, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint};
7use block_map::{BlockMap, BlockPoint};
8use collections::{HashMap, HashSet};
9use fold_map::FoldMap;
10use gpui::{
11 fonts::{FontId, HighlightStyle},
12 Entity, ModelContext, ModelHandle,
13};
14use language::{Point, Subscription as BufferSubscription};
15use settings::Settings;
16use std::{any::TypeId, fmt::Debug, num::NonZeroU32, ops::Range, sync::Arc};
17use sum_tree::{Bias, TreeMap};
18use tab_map::TabMap;
19use wrap_map::WrapMap;
20
21pub use block_map::{
22 BlockBufferRows as DisplayBufferRows, BlockChunks as DisplayChunks, BlockContext,
23 BlockDisposition, BlockId, BlockProperties, BlockStyle, RenderBlock, TransformBlock,
24};
25
26pub trait ToDisplayPoint {
27 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint;
28}
29
30type TextHighlights = TreeMap<Option<TypeId>, Arc<(HighlightStyle, Vec<Range<Anchor>>)>>;
31
32pub struct DisplayMap {
33 buffer: ModelHandle<MultiBuffer>,
34 buffer_subscription: BufferSubscription,
35 fold_map: FoldMap,
36 tab_map: TabMap,
37 wrap_map: ModelHandle<WrapMap>,
38 block_map: BlockMap,
39 text_highlights: TextHighlights,
40 pub clip_at_line_ends: bool,
41}
42
43impl Entity for DisplayMap {
44 type Event = ();
45}
46
47impl DisplayMap {
48 pub fn new(
49 buffer: ModelHandle<MultiBuffer>,
50 font_id: FontId,
51 font_size: f32,
52 wrap_width: Option<f32>,
53 buffer_header_height: u8,
54 excerpt_header_height: u8,
55 cx: &mut ModelContext<Self>,
56 ) -> Self {
57 let buffer_subscription = buffer.update(cx, |buffer, _| buffer.subscribe());
58
59 let tab_size = Self::tab_size(&buffer, cx);
60 let (fold_map, snapshot) = FoldMap::new(buffer.read(cx).snapshot(cx));
61 let (tab_map, snapshot) = TabMap::new(snapshot, tab_size);
62 let (wrap_map, snapshot) = WrapMap::new(snapshot, font_id, font_size, wrap_width, cx);
63 let block_map = BlockMap::new(snapshot, buffer_header_height, excerpt_header_height);
64 cx.observe(&wrap_map, |_, _, cx| cx.notify()).detach();
65 DisplayMap {
66 buffer,
67 buffer_subscription,
68 fold_map,
69 tab_map,
70 wrap_map,
71 block_map,
72 text_highlights: Default::default(),
73 clip_at_line_ends: false,
74 }
75 }
76
77 pub fn snapshot(&self, cx: &mut ModelContext<Self>) -> DisplaySnapshot {
78 let buffer_snapshot = self.buffer.read(cx).snapshot(cx);
79 let edits = self.buffer_subscription.consume().into_inner();
80 let (folds_snapshot, edits) = self.fold_map.read(buffer_snapshot, edits);
81
82 let tab_size = Self::tab_size(&self.buffer, cx);
83 let (tabs_snapshot, edits) = self.tab_map.sync(folds_snapshot.clone(), edits, tab_size);
84 let (wraps_snapshot, edits) = self
85 .wrap_map
86 .update(cx, |map, cx| map.sync(tabs_snapshot.clone(), edits, cx));
87 let blocks_snapshot = self.block_map.read(wraps_snapshot.clone(), edits);
88
89 DisplaySnapshot {
90 buffer_snapshot: self.buffer.read(cx).snapshot(cx),
91 folds_snapshot,
92 tabs_snapshot,
93 wraps_snapshot,
94 blocks_snapshot,
95 text_highlights: self.text_highlights.clone(),
96 clip_at_line_ends: self.clip_at_line_ends,
97 }
98 }
99
100 pub fn set_state(&mut self, other: &DisplaySnapshot, cx: &mut ModelContext<Self>) {
101 self.fold(
102 other
103 .folds_in_range(0..other.buffer_snapshot.len())
104 .map(|fold| fold.to_offset(&other.buffer_snapshot)),
105 cx,
106 );
107 }
108
109 pub fn fold<T: ToOffset>(
110 &mut self,
111 ranges: impl IntoIterator<Item = Range<T>>,
112 cx: &mut ModelContext<Self>,
113 ) {
114 let snapshot = self.buffer.read(cx).snapshot(cx);
115 let edits = self.buffer_subscription.consume().into_inner();
116 let tab_size = Self::tab_size(&self.buffer, cx);
117 let (mut fold_map, snapshot, edits) = self.fold_map.write(snapshot, edits);
118 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
119 let (snapshot, edits) = self
120 .wrap_map
121 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
122 self.block_map.read(snapshot, edits);
123 let (snapshot, edits) = fold_map.fold(ranges);
124 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
125 let (snapshot, edits) = self
126 .wrap_map
127 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
128 self.block_map.read(snapshot, edits);
129 }
130
131 pub fn unfold<T: ToOffset>(
132 &mut self,
133 ranges: impl IntoIterator<Item = Range<T>>,
134 inclusive: bool,
135 cx: &mut ModelContext<Self>,
136 ) {
137 let snapshot = self.buffer.read(cx).snapshot(cx);
138 let edits = self.buffer_subscription.consume().into_inner();
139 let tab_size = Self::tab_size(&self.buffer, cx);
140 let (mut fold_map, snapshot, edits) = self.fold_map.write(snapshot, edits);
141 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
142 let (snapshot, edits) = self
143 .wrap_map
144 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
145 self.block_map.read(snapshot, edits);
146 let (snapshot, edits) = fold_map.unfold(ranges, inclusive);
147 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
148 let (snapshot, edits) = self
149 .wrap_map
150 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
151 self.block_map.read(snapshot, edits);
152 }
153
154 pub fn insert_blocks(
155 &mut self,
156 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
157 cx: &mut ModelContext<Self>,
158 ) -> Vec<BlockId> {
159 let snapshot = self.buffer.read(cx).snapshot(cx);
160 let edits = self.buffer_subscription.consume().into_inner();
161 let tab_size = Self::tab_size(&self.buffer, cx);
162 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
163 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
164 let (snapshot, edits) = self
165 .wrap_map
166 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
167 let mut block_map = self.block_map.write(snapshot, edits);
168 block_map.insert(blocks)
169 }
170
171 pub fn replace_blocks(&mut self, styles: HashMap<BlockId, RenderBlock>) {
172 self.block_map.replace(styles);
173 }
174
175 pub fn remove_blocks(&mut self, ids: HashSet<BlockId>, cx: &mut ModelContext<Self>) {
176 let snapshot = self.buffer.read(cx).snapshot(cx);
177 let edits = self.buffer_subscription.consume().into_inner();
178 let tab_size = Self::tab_size(&self.buffer, cx);
179 let (snapshot, edits) = self.fold_map.read(snapshot, edits);
180 let (snapshot, edits) = self.tab_map.sync(snapshot, edits, tab_size);
181 let (snapshot, edits) = self
182 .wrap_map
183 .update(cx, |map, cx| map.sync(snapshot, edits, cx));
184 let mut block_map = self.block_map.write(snapshot, edits);
185 block_map.remove(ids);
186 }
187
188 pub fn highlight_text(
189 &mut self,
190 type_id: TypeId,
191 ranges: Vec<Range<Anchor>>,
192 style: HighlightStyle,
193 ) {
194 self.text_highlights
195 .insert(Some(type_id), Arc::new((style, ranges)));
196 }
197
198 pub fn clear_text_highlights(
199 &mut self,
200 type_id: TypeId,
201 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
202 self.text_highlights.remove(&Some(type_id))
203 }
204
205 pub fn set_font(&self, font_id: FontId, font_size: f32, cx: &mut ModelContext<Self>) -> bool {
206 self.wrap_map
207 .update(cx, |map, cx| map.set_font(font_id, font_size, cx))
208 }
209
210 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut ModelContext<Self>) -> bool {
211 self.wrap_map
212 .update(cx, |map, cx| map.set_wrap_width(width, cx))
213 }
214
215 fn tab_size(buffer: &ModelHandle<MultiBuffer>, cx: &mut ModelContext<Self>) -> NonZeroU32 {
216 let language_name = buffer
217 .read(cx)
218 .as_singleton()
219 .and_then(|buffer| buffer.read(cx).language())
220 .map(|language| language.name());
221
222 cx.global::<Settings>().tab_size(language_name.as_deref())
223 }
224
225 #[cfg(test)]
226 pub fn is_rewrapping(&self, cx: &gpui::AppContext) -> bool {
227 self.wrap_map.read(cx).is_rewrapping()
228 }
229}
230
231pub struct DisplaySnapshot {
232 pub buffer_snapshot: MultiBufferSnapshot,
233 folds_snapshot: fold_map::FoldSnapshot,
234 tabs_snapshot: tab_map::TabSnapshot,
235 wraps_snapshot: wrap_map::WrapSnapshot,
236 blocks_snapshot: block_map::BlockSnapshot,
237 text_highlights: TextHighlights,
238 clip_at_line_ends: bool,
239}
240
241impl DisplaySnapshot {
242 #[cfg(test)]
243 pub fn fold_count(&self) -> usize {
244 self.folds_snapshot.fold_count()
245 }
246
247 pub fn is_empty(&self) -> bool {
248 self.buffer_snapshot.len() == 0
249 }
250
251 pub fn buffer_rows<'a>(&'a self, start_row: u32) -> DisplayBufferRows<'a> {
252 self.blocks_snapshot.buffer_rows(start_row)
253 }
254
255 pub fn max_buffer_row(&self) -> u32 {
256 self.buffer_snapshot.max_buffer_row()
257 }
258
259 pub fn prev_line_boundary(&self, mut point: Point) -> (Point, DisplayPoint) {
260 loop {
261 let mut fold_point = self.folds_snapshot.to_fold_point(point, Bias::Left);
262 *fold_point.column_mut() = 0;
263 point = fold_point.to_buffer_point(&self.folds_snapshot);
264
265 let mut display_point = self.point_to_display_point(point, Bias::Left);
266 *display_point.column_mut() = 0;
267 let next_point = self.display_point_to_point(display_point, Bias::Left);
268 if next_point == point {
269 return (point, display_point);
270 }
271 point = next_point;
272 }
273 }
274
275 pub fn next_line_boundary(&self, mut point: Point) -> (Point, DisplayPoint) {
276 loop {
277 let mut fold_point = self.folds_snapshot.to_fold_point(point, Bias::Right);
278 *fold_point.column_mut() = self.folds_snapshot.line_len(fold_point.row());
279 point = fold_point.to_buffer_point(&self.folds_snapshot);
280
281 let mut display_point = self.point_to_display_point(point, Bias::Right);
282 *display_point.column_mut() = self.line_len(display_point.row());
283 let next_point = self.display_point_to_point(display_point, Bias::Right);
284 if next_point == point {
285 return (point, display_point);
286 }
287 point = next_point;
288 }
289 }
290
291 pub fn expand_to_line(&self, range: Range<Point>) -> Range<Point> {
292 let mut new_start = self.prev_line_boundary(range.start).0;
293 let mut new_end = self.next_line_boundary(range.end).0;
294
295 if new_start.row == range.start.row && new_end.row == range.end.row {
296 if new_end.row < self.buffer_snapshot.max_point().row {
297 new_end.row += 1;
298 new_end.column = 0;
299 } else if new_start.row > 0 {
300 new_start.row -= 1;
301 new_start.column = self.buffer_snapshot.line_len(new_start.row);
302 }
303 }
304
305 new_start..new_end
306 }
307
308 fn point_to_display_point(&self, point: Point, bias: Bias) -> DisplayPoint {
309 let fold_point = self.folds_snapshot.to_fold_point(point, bias);
310 let tab_point = self.tabs_snapshot.to_tab_point(fold_point);
311 let wrap_point = self.wraps_snapshot.from_tab_point(tab_point);
312 let block_point = self.blocks_snapshot.to_block_point(wrap_point);
313 DisplayPoint(block_point)
314 }
315
316 fn display_point_to_point(&self, point: DisplayPoint, bias: Bias) -> Point {
317 let block_point = point.0;
318 let wrap_point = self.blocks_snapshot.to_wrap_point(block_point);
319 let tab_point = self.wraps_snapshot.to_tab_point(wrap_point);
320 let fold_point = self.tabs_snapshot.to_fold_point(tab_point, bias).0;
321 fold_point.to_buffer_point(&self.folds_snapshot)
322 }
323
324 pub fn max_point(&self) -> DisplayPoint {
325 DisplayPoint(self.blocks_snapshot.max_point())
326 }
327
328 pub fn text_chunks(&self, display_row: u32) -> impl Iterator<Item = &str> {
329 self.blocks_snapshot
330 .chunks(display_row..self.max_point().row() + 1, false, None)
331 .map(|h| h.text)
332 }
333
334 pub fn chunks<'a>(
335 &'a self,
336 display_rows: Range<u32>,
337 language_aware: bool,
338 ) -> DisplayChunks<'a> {
339 self.blocks_snapshot
340 .chunks(display_rows, language_aware, Some(&self.text_highlights))
341 }
342
343 pub fn chars_at<'a>(&'a self, point: DisplayPoint) -> impl Iterator<Item = char> + 'a {
344 let mut column = 0;
345 let mut chars = self.text_chunks(point.row()).flat_map(str::chars);
346 while column < point.column() {
347 if let Some(c) = chars.next() {
348 column += c.len_utf8() as u32;
349 } else {
350 break;
351 }
352 }
353 chars
354 }
355
356 pub fn column_to_chars(&self, display_row: u32, target: u32) -> u32 {
357 let mut count = 0;
358 let mut column = 0;
359 for c in self.chars_at(DisplayPoint::new(display_row, 0)) {
360 if column >= target {
361 break;
362 }
363 count += 1;
364 column += c.len_utf8() as u32;
365 }
366 count
367 }
368
369 pub fn column_from_chars(&self, display_row: u32, char_count: u32) -> u32 {
370 let mut count = 0;
371 let mut column = 0;
372 for c in self.chars_at(DisplayPoint::new(display_row, 0)) {
373 if c == '\n' || count >= char_count {
374 break;
375 }
376 count += 1;
377 column += c.len_utf8() as u32;
378 }
379 column
380 }
381
382 pub fn clip_point(&self, point: DisplayPoint, bias: Bias) -> DisplayPoint {
383 let mut clipped = self.blocks_snapshot.clip_point(point.0, bias);
384 if self.clip_at_line_ends {
385 clipped = self.clip_at_line_end(DisplayPoint(clipped)).0
386 }
387 DisplayPoint(clipped)
388 }
389
390 pub fn clip_at_line_end(&self, point: DisplayPoint) -> DisplayPoint {
391 let mut point = point.0;
392 if point.column == self.line_len(point.row) {
393 point.column = point.column.saturating_sub(1);
394 point = self.blocks_snapshot.clip_point(point, Bias::Left);
395 }
396 DisplayPoint(point)
397 }
398
399 pub fn folds_in_range<'a, T>(
400 &'a self,
401 range: Range<T>,
402 ) -> impl Iterator<Item = &'a Range<Anchor>>
403 where
404 T: ToOffset,
405 {
406 self.folds_snapshot.folds_in_range(range)
407 }
408
409 pub fn blocks_in_range<'a>(
410 &'a self,
411 rows: Range<u32>,
412 ) -> impl Iterator<Item = (u32, &'a TransformBlock)> {
413 self.blocks_snapshot.blocks_in_range(rows)
414 }
415
416 pub fn intersects_fold<T: ToOffset>(&self, offset: T) -> bool {
417 self.folds_snapshot.intersects_fold(offset)
418 }
419
420 pub fn is_line_folded(&self, display_row: u32) -> bool {
421 let block_point = BlockPoint(Point::new(display_row, 0));
422 let wrap_point = self.blocks_snapshot.to_wrap_point(block_point);
423 let tab_point = self.wraps_snapshot.to_tab_point(wrap_point);
424 self.folds_snapshot.is_line_folded(tab_point.row())
425 }
426
427 pub fn is_block_line(&self, display_row: u32) -> bool {
428 self.blocks_snapshot.is_block_line(display_row)
429 }
430
431 pub fn soft_wrap_indent(&self, display_row: u32) -> Option<u32> {
432 let wrap_row = self
433 .blocks_snapshot
434 .to_wrap_point(BlockPoint::new(display_row, 0))
435 .row();
436 self.wraps_snapshot.soft_wrap_indent(wrap_row)
437 }
438
439 pub fn text(&self) -> String {
440 self.text_chunks(0).collect()
441 }
442
443 pub fn line(&self, display_row: u32) -> String {
444 let mut result = String::new();
445 for chunk in self.text_chunks(display_row) {
446 if let Some(ix) = chunk.find('\n') {
447 result.push_str(&chunk[0..ix]);
448 break;
449 } else {
450 result.push_str(chunk);
451 }
452 }
453 result
454 }
455
456 pub fn line_indent(&self, display_row: u32) -> (u32, bool) {
457 let mut indent = 0;
458 let mut is_blank = true;
459 for c in self.chars_at(DisplayPoint::new(display_row, 0)) {
460 if c == ' ' {
461 indent += 1;
462 } else {
463 is_blank = c == '\n';
464 break;
465 }
466 }
467 (indent, is_blank)
468 }
469
470 pub fn line_len(&self, row: u32) -> u32 {
471 self.blocks_snapshot.line_len(row)
472 }
473
474 pub fn longest_row(&self) -> u32 {
475 self.blocks_snapshot.longest_row()
476 }
477
478 #[cfg(any(test, feature = "test-support"))]
479 pub fn highlight_ranges<Tag: ?Sized + 'static>(
480 &self,
481 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
482 let type_id = TypeId::of::<Tag>();
483 self.text_highlights.get(&Some(type_id)).cloned()
484 }
485}
486
487#[derive(Copy, Clone, Default, Eq, Ord, PartialOrd, PartialEq)]
488pub struct DisplayPoint(BlockPoint);
489
490impl Debug for DisplayPoint {
491 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
492 f.write_fmt(format_args!(
493 "DisplayPoint({}, {})",
494 self.row(),
495 self.column()
496 ))
497 }
498}
499
500impl DisplayPoint {
501 pub fn new(row: u32, column: u32) -> Self {
502 Self(BlockPoint(Point::new(row, column)))
503 }
504
505 pub fn zero() -> Self {
506 Self::new(0, 0)
507 }
508
509 pub fn is_zero(&self) -> bool {
510 self.0.is_zero()
511 }
512
513 pub fn row(self) -> u32 {
514 self.0.row
515 }
516
517 pub fn column(self) -> u32 {
518 self.0.column
519 }
520
521 pub fn row_mut(&mut self) -> &mut u32 {
522 &mut self.0.row
523 }
524
525 pub fn column_mut(&mut self) -> &mut u32 {
526 &mut self.0.column
527 }
528
529 pub fn to_point(self, map: &DisplaySnapshot) -> Point {
530 map.display_point_to_point(self, Bias::Left)
531 }
532
533 pub fn to_offset(self, map: &DisplaySnapshot, bias: Bias) -> usize {
534 let unblocked_point = map.blocks_snapshot.to_wrap_point(self.0);
535 let unwrapped_point = map.wraps_snapshot.to_tab_point(unblocked_point);
536 let unexpanded_point = map.tabs_snapshot.to_fold_point(unwrapped_point, bias).0;
537 unexpanded_point.to_buffer_offset(&map.folds_snapshot)
538 }
539}
540
541impl ToDisplayPoint for usize {
542 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
543 map.point_to_display_point(self.to_point(&map.buffer_snapshot), Bias::Left)
544 }
545}
546
547impl ToDisplayPoint for Point {
548 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
549 map.point_to_display_point(*self, Bias::Left)
550 }
551}
552
553impl ToDisplayPoint for Anchor {
554 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
555 self.to_point(&map.buffer_snapshot).to_display_point(map)
556 }
557}
558
559#[cfg(test)]
560pub mod tests {
561 use super::*;
562 use crate::{movement, test::marked_display_snapshot};
563 use gpui::{color::Color, elements::*, test::observe, MutableAppContext};
564 use language::{Buffer, Language, LanguageConfig, RandomCharIter, SelectionGoal};
565 use rand::{prelude::*, Rng};
566 use smol::stream::StreamExt;
567 use std::{env, sync::Arc};
568 use theme::SyntaxTheme;
569 use util::test::{marked_text_ranges, sample_text};
570 use Bias::*;
571
572 #[gpui::test(iterations = 100)]
573 async fn test_random_display_map(cx: &mut gpui::TestAppContext, mut rng: StdRng) {
574 cx.foreground().set_block_on_ticks(0..=50);
575 cx.foreground().forbid_parking();
576 let operations = env::var("OPERATIONS")
577 .map(|i| i.parse().expect("invalid `OPERATIONS` variable"))
578 .unwrap_or(10);
579
580 let font_cache = cx.font_cache().clone();
581 let tab_size = rng.gen_range(1..=4);
582 let buffer_start_excerpt_header_height = rng.gen_range(1..=5);
583 let excerpt_header_height = rng.gen_range(1..=5);
584 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
585 let font_id = font_cache
586 .select_font(family_id, &Default::default())
587 .unwrap();
588 let font_size = 14.0;
589 let max_wrap_width = 300.0;
590 let mut wrap_width = if rng.gen_bool(0.1) {
591 None
592 } else {
593 Some(rng.gen_range(0.0..=max_wrap_width))
594 };
595
596 log::info!("tab size: {}", tab_size);
597 log::info!("wrap width: {:?}", wrap_width);
598
599 cx.update(|cx| cx.set_global(Settings::test(cx)));
600
601 let buffer = cx.update(|cx| {
602 if rng.gen() {
603 let len = rng.gen_range(0..10);
604 let text = RandomCharIter::new(&mut rng).take(len).collect::<String>();
605 MultiBuffer::build_simple(&text, cx)
606 } else {
607 MultiBuffer::build_random(&mut rng, cx)
608 }
609 });
610
611 let map = cx.add_model(|cx| {
612 DisplayMap::new(
613 buffer.clone(),
614 font_id,
615 font_size,
616 wrap_width,
617 buffer_start_excerpt_header_height,
618 excerpt_header_height,
619 cx,
620 )
621 });
622 let mut notifications = observe(&map, cx);
623 let mut fold_count = 0;
624 let mut blocks = Vec::new();
625
626 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
627 log::info!("buffer text: {:?}", snapshot.buffer_snapshot.text());
628 log::info!("fold text: {:?}", snapshot.folds_snapshot.text());
629 log::info!("tab text: {:?}", snapshot.tabs_snapshot.text());
630 log::info!("wrap text: {:?}", snapshot.wraps_snapshot.text());
631 log::info!("block text: {:?}", snapshot.blocks_snapshot.text());
632 log::info!("display text: {:?}", snapshot.text());
633
634 for _i in 0..operations {
635 match rng.gen_range(0..100) {
636 0..=19 => {
637 wrap_width = if rng.gen_bool(0.2) {
638 None
639 } else {
640 Some(rng.gen_range(0.0..=max_wrap_width))
641 };
642 log::info!("setting wrap width to {:?}", wrap_width);
643 map.update(cx, |map, cx| map.set_wrap_width(wrap_width, cx));
644 }
645 20..=44 => {
646 map.update(cx, |map, cx| {
647 if rng.gen() || blocks.is_empty() {
648 let buffer = map.snapshot(cx).buffer_snapshot;
649 let block_properties = (0..rng.gen_range(1..=1))
650 .map(|_| {
651 let position =
652 buffer.anchor_after(buffer.clip_offset(
653 rng.gen_range(0..=buffer.len()),
654 Bias::Left,
655 ));
656
657 let disposition = if rng.gen() {
658 BlockDisposition::Above
659 } else {
660 BlockDisposition::Below
661 };
662 let height = rng.gen_range(1..5);
663 log::info!(
664 "inserting block {:?} {:?} with height {}",
665 disposition,
666 position.to_point(&buffer),
667 height
668 );
669 BlockProperties {
670 style: BlockStyle::Fixed,
671 position,
672 height,
673 disposition,
674 render: Arc::new(|_| Empty::new().boxed()),
675 }
676 })
677 .collect::<Vec<_>>();
678 blocks.extend(map.insert_blocks(block_properties, cx));
679 } else {
680 blocks.shuffle(&mut rng);
681 let remove_count = rng.gen_range(1..=4.min(blocks.len()));
682 let block_ids_to_remove = (0..remove_count)
683 .map(|_| blocks.remove(rng.gen_range(0..blocks.len())))
684 .collect();
685 log::info!("removing block ids {:?}", block_ids_to_remove);
686 map.remove_blocks(block_ids_to_remove, cx);
687 }
688 });
689 }
690 45..=79 => {
691 let mut ranges = Vec::new();
692 for _ in 0..rng.gen_range(1..=3) {
693 buffer.read_with(cx, |buffer, cx| {
694 let buffer = buffer.read(cx);
695 let end = buffer.clip_offset(rng.gen_range(0..=buffer.len()), Right);
696 let start = buffer.clip_offset(rng.gen_range(0..=end), Left);
697 ranges.push(start..end);
698 });
699 }
700
701 if rng.gen() && fold_count > 0 {
702 log::info!("unfolding ranges: {:?}", ranges);
703 map.update(cx, |map, cx| {
704 map.unfold(ranges, true, cx);
705 });
706 } else {
707 log::info!("folding ranges: {:?}", ranges);
708 map.update(cx, |map, cx| {
709 map.fold(ranges, cx);
710 });
711 }
712 }
713 _ => {
714 buffer.update(cx, |buffer, cx| buffer.randomly_mutate(&mut rng, 5, cx));
715 }
716 }
717
718 if map.read_with(cx, |map, cx| map.is_rewrapping(cx)) {
719 notifications.next().await.unwrap();
720 }
721
722 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
723 fold_count = snapshot.fold_count();
724 log::info!("buffer text: {:?}", snapshot.buffer_snapshot.text());
725 log::info!("fold text: {:?}", snapshot.folds_snapshot.text());
726 log::info!("tab text: {:?}", snapshot.tabs_snapshot.text());
727 log::info!("wrap text: {:?}", snapshot.wraps_snapshot.text());
728 log::info!("block text: {:?}", snapshot.blocks_snapshot.text());
729 log::info!("display text: {:?}", snapshot.text());
730
731 // Line boundaries
732 let buffer = &snapshot.buffer_snapshot;
733 for _ in 0..5 {
734 let row = rng.gen_range(0..=buffer.max_point().row);
735 let column = rng.gen_range(0..=buffer.line_len(row));
736 let point = buffer.clip_point(Point::new(row, column), Left);
737
738 let (prev_buffer_bound, prev_display_bound) = snapshot.prev_line_boundary(point);
739 let (next_buffer_bound, next_display_bound) = snapshot.next_line_boundary(point);
740
741 assert!(prev_buffer_bound <= point);
742 assert!(next_buffer_bound >= point);
743 assert_eq!(prev_buffer_bound.column, 0);
744 assert_eq!(prev_display_bound.column(), 0);
745 if next_buffer_bound < buffer.max_point() {
746 assert_eq!(buffer.chars_at(next_buffer_bound).next(), Some('\n'));
747 }
748
749 assert_eq!(
750 prev_display_bound,
751 prev_buffer_bound.to_display_point(&snapshot),
752 "row boundary before {:?}. reported buffer row boundary: {:?}",
753 point,
754 prev_buffer_bound
755 );
756 assert_eq!(
757 next_display_bound,
758 next_buffer_bound.to_display_point(&snapshot),
759 "display row boundary after {:?}. reported buffer row boundary: {:?}",
760 point,
761 next_buffer_bound
762 );
763 assert_eq!(
764 prev_buffer_bound,
765 prev_display_bound.to_point(&snapshot),
766 "row boundary before {:?}. reported display row boundary: {:?}",
767 point,
768 prev_display_bound
769 );
770 assert_eq!(
771 next_buffer_bound,
772 next_display_bound.to_point(&snapshot),
773 "row boundary after {:?}. reported display row boundary: {:?}",
774 point,
775 next_display_bound
776 );
777 }
778
779 // Movement
780 let min_point = snapshot.clip_point(DisplayPoint::new(0, 0), Left);
781 let max_point = snapshot.clip_point(snapshot.max_point(), Right);
782 for _ in 0..5 {
783 let row = rng.gen_range(0..=snapshot.max_point().row());
784 let column = rng.gen_range(0..=snapshot.line_len(row));
785 let point = snapshot.clip_point(DisplayPoint::new(row, column), Left);
786
787 log::info!("Moving from point {:?}", point);
788
789 let moved_right = movement::right(&snapshot, point);
790 log::info!("Right {:?}", moved_right);
791 if point < max_point {
792 assert!(moved_right > point);
793 if point.column() == snapshot.line_len(point.row())
794 || snapshot.soft_wrap_indent(point.row()).is_some()
795 && point.column() == snapshot.line_len(point.row()) - 1
796 {
797 assert!(moved_right.row() > point.row());
798 }
799 } else {
800 assert_eq!(moved_right, point);
801 }
802
803 let moved_left = movement::left(&snapshot, point);
804 log::info!("Left {:?}", moved_left);
805 if point > min_point {
806 assert!(moved_left < point);
807 if point.column() == 0 {
808 assert!(moved_left.row() < point.row());
809 }
810 } else {
811 assert_eq!(moved_left, point);
812 }
813 }
814 }
815 }
816
817 #[gpui::test(retries = 5)]
818 fn test_soft_wraps(cx: &mut MutableAppContext) {
819 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
820 cx.foreground().forbid_parking();
821
822 let font_cache = cx.font_cache();
823
824 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
825 let font_id = font_cache
826 .select_font(family_id, &Default::default())
827 .unwrap();
828 let font_size = 12.0;
829 let wrap_width = Some(64.);
830 cx.set_global(Settings::test(cx));
831
832 let text = "one two three four five\nsix seven eight";
833 let buffer = MultiBuffer::build_simple(text, cx);
834 let map = cx.add_model(|cx| {
835 DisplayMap::new(buffer.clone(), font_id, font_size, wrap_width, 1, 1, cx)
836 });
837
838 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
839 assert_eq!(
840 snapshot.text_chunks(0).collect::<String>(),
841 "one two \nthree four \nfive\nsix seven \neight"
842 );
843 assert_eq!(
844 snapshot.clip_point(DisplayPoint::new(0, 8), Bias::Left),
845 DisplayPoint::new(0, 7)
846 );
847 assert_eq!(
848 snapshot.clip_point(DisplayPoint::new(0, 8), Bias::Right),
849 DisplayPoint::new(1, 0)
850 );
851 assert_eq!(
852 movement::right(&snapshot, DisplayPoint::new(0, 7)),
853 DisplayPoint::new(1, 0)
854 );
855 assert_eq!(
856 movement::left(&snapshot, DisplayPoint::new(1, 0)),
857 DisplayPoint::new(0, 7)
858 );
859 assert_eq!(
860 movement::up(
861 &snapshot,
862 DisplayPoint::new(1, 10),
863 SelectionGoal::None,
864 false
865 ),
866 (DisplayPoint::new(0, 7), SelectionGoal::Column(10))
867 );
868 assert_eq!(
869 movement::down(
870 &snapshot,
871 DisplayPoint::new(0, 7),
872 SelectionGoal::Column(10),
873 false
874 ),
875 (DisplayPoint::new(1, 10), SelectionGoal::Column(10))
876 );
877 assert_eq!(
878 movement::down(
879 &snapshot,
880 DisplayPoint::new(1, 10),
881 SelectionGoal::Column(10),
882 false
883 ),
884 (DisplayPoint::new(2, 4), SelectionGoal::Column(10))
885 );
886
887 let ix = snapshot.buffer_snapshot.text().find("seven").unwrap();
888 buffer.update(cx, |buffer, cx| {
889 buffer.edit([(ix..ix, "and ")], cx);
890 });
891
892 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
893 assert_eq!(
894 snapshot.text_chunks(1).collect::<String>(),
895 "three four \nfive\nsix and \nseven eight"
896 );
897
898 // Re-wrap on font size changes
899 map.update(cx, |map, cx| map.set_font(font_id, font_size + 3., cx));
900
901 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
902 assert_eq!(
903 snapshot.text_chunks(1).collect::<String>(),
904 "three \nfour five\nsix and \nseven \neight"
905 )
906 }
907
908 #[gpui::test]
909 fn test_text_chunks(cx: &mut gpui::MutableAppContext) {
910 cx.set_global(Settings::test(cx));
911 let text = sample_text(6, 6, 'a');
912 let buffer = MultiBuffer::build_simple(&text, cx);
913 let family_id = cx.font_cache().load_family(&["Helvetica"]).unwrap();
914 let font_id = cx
915 .font_cache()
916 .select_font(family_id, &Default::default())
917 .unwrap();
918 let font_size = 14.0;
919 let map =
920 cx.add_model(|cx| DisplayMap::new(buffer.clone(), font_id, font_size, None, 1, 1, cx));
921 buffer.update(cx, |buffer, cx| {
922 buffer.edit(
923 vec![
924 (Point::new(1, 0)..Point::new(1, 0), "\t"),
925 (Point::new(1, 1)..Point::new(1, 1), "\t"),
926 (Point::new(2, 1)..Point::new(2, 1), "\t"),
927 ],
928 cx,
929 )
930 });
931
932 assert_eq!(
933 map.update(cx, |map, cx| map.snapshot(cx))
934 .text_chunks(1)
935 .collect::<String>()
936 .lines()
937 .next(),
938 Some(" b bbbbb")
939 );
940 assert_eq!(
941 map.update(cx, |map, cx| map.snapshot(cx))
942 .text_chunks(2)
943 .collect::<String>()
944 .lines()
945 .next(),
946 Some("c ccccc")
947 );
948 }
949
950 #[gpui::test]
951 async fn test_chunks(cx: &mut gpui::TestAppContext) {
952 use unindent::Unindent as _;
953
954 let text = r#"
955 fn outer() {}
956
957 mod module {
958 fn inner() {}
959 }"#
960 .unindent();
961
962 let theme = SyntaxTheme::new(vec![
963 ("mod.body".to_string(), Color::red().into()),
964 ("fn.name".to_string(), Color::blue().into()),
965 ]);
966 let language = Arc::new(
967 Language::new(
968 LanguageConfig {
969 name: "Test".into(),
970 path_suffixes: vec![".test".to_string()],
971 ..Default::default()
972 },
973 Some(tree_sitter_rust::language()),
974 )
975 .with_highlights_query(
976 r#"
977 (mod_item name: (identifier) body: _ @mod.body)
978 (function_item name: (identifier) @fn.name)
979 "#,
980 )
981 .unwrap(),
982 );
983 language.set_theme(&theme);
984 cx.update(|cx| {
985 let mut settings = Settings::test(cx);
986 settings.editor_defaults.tab_size = Some(2.try_into().unwrap());
987 cx.set_global(settings);
988 });
989
990 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
991 buffer.condition(&cx, |buf, _| !buf.is_parsing()).await;
992 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
993
994 let font_cache = cx.font_cache();
995 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
996 let font_id = font_cache
997 .select_font(family_id, &Default::default())
998 .unwrap();
999 let font_size = 14.0;
1000
1001 let map = cx.add_model(|cx| DisplayMap::new(buffer, font_id, font_size, None, 1, 1, cx));
1002 assert_eq!(
1003 cx.update(|cx| syntax_chunks(0..5, &map, &theme, cx)),
1004 vec![
1005 ("fn ".to_string(), None),
1006 ("outer".to_string(), Some(Color::blue())),
1007 ("() {}\n\nmod module ".to_string(), None),
1008 ("{\n fn ".to_string(), Some(Color::red())),
1009 ("inner".to_string(), Some(Color::blue())),
1010 ("() {}\n}".to_string(), Some(Color::red())),
1011 ]
1012 );
1013 assert_eq!(
1014 cx.update(|cx| syntax_chunks(3..5, &map, &theme, cx)),
1015 vec![
1016 (" fn ".to_string(), Some(Color::red())),
1017 ("inner".to_string(), Some(Color::blue())),
1018 ("() {}\n}".to_string(), Some(Color::red())),
1019 ]
1020 );
1021
1022 map.update(cx, |map, cx| {
1023 map.fold(vec![Point::new(0, 6)..Point::new(3, 2)], cx)
1024 });
1025 assert_eq!(
1026 cx.update(|cx| syntax_chunks(0..2, &map, &theme, cx)),
1027 vec![
1028 ("fn ".to_string(), None),
1029 ("out".to_string(), Some(Color::blue())),
1030 ("…".to_string(), None),
1031 (" fn ".to_string(), Some(Color::red())),
1032 ("inner".to_string(), Some(Color::blue())),
1033 ("() {}\n}".to_string(), Some(Color::red())),
1034 ]
1035 );
1036 }
1037
1038 #[gpui::test]
1039 async fn test_chunks_with_soft_wrapping(cx: &mut gpui::TestAppContext) {
1040 use unindent::Unindent as _;
1041
1042 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
1043
1044 let text = r#"
1045 fn outer() {}
1046
1047 mod module {
1048 fn inner() {}
1049 }"#
1050 .unindent();
1051
1052 let theme = SyntaxTheme::new(vec![
1053 ("mod.body".to_string(), Color::red().into()),
1054 ("fn.name".to_string(), Color::blue().into()),
1055 ]);
1056 let language = Arc::new(
1057 Language::new(
1058 LanguageConfig {
1059 name: "Test".into(),
1060 path_suffixes: vec![".test".to_string()],
1061 ..Default::default()
1062 },
1063 Some(tree_sitter_rust::language()),
1064 )
1065 .with_highlights_query(
1066 r#"
1067 (mod_item name: (identifier) body: _ @mod.body)
1068 (function_item name: (identifier) @fn.name)
1069 "#,
1070 )
1071 .unwrap(),
1072 );
1073 language.set_theme(&theme);
1074
1075 cx.update(|cx| cx.set_global(Settings::test(cx)));
1076
1077 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
1078 buffer.condition(&cx, |buf, _| !buf.is_parsing()).await;
1079 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
1080
1081 let font_cache = cx.font_cache();
1082
1083 let family_id = font_cache.load_family(&["Courier"]).unwrap();
1084 let font_id = font_cache
1085 .select_font(family_id, &Default::default())
1086 .unwrap();
1087 let font_size = 16.0;
1088
1089 let map =
1090 cx.add_model(|cx| DisplayMap::new(buffer, font_id, font_size, Some(40.0), 1, 1, cx));
1091 assert_eq!(
1092 cx.update(|cx| syntax_chunks(0..5, &map, &theme, cx)),
1093 [
1094 ("fn \n".to_string(), None),
1095 ("oute\nr".to_string(), Some(Color::blue())),
1096 ("() \n{}\n\n".to_string(), None),
1097 ]
1098 );
1099 assert_eq!(
1100 cx.update(|cx| syntax_chunks(3..5, &map, &theme, cx)),
1101 [("{}\n\n".to_string(), None)]
1102 );
1103
1104 map.update(cx, |map, cx| {
1105 map.fold(vec![Point::new(0, 6)..Point::new(3, 2)], cx)
1106 });
1107 assert_eq!(
1108 cx.update(|cx| syntax_chunks(1..4, &map, &theme, cx)),
1109 [
1110 ("out".to_string(), Some(Color::blue())),
1111 ("…\n".to_string(), None),
1112 (" \nfn ".to_string(), Some(Color::red())),
1113 ("i\n".to_string(), Some(Color::blue()))
1114 ]
1115 );
1116 }
1117
1118 #[gpui::test]
1119 async fn test_chunks_with_text_highlights(cx: &mut gpui::TestAppContext) {
1120 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
1121
1122 cx.update(|cx| cx.set_global(Settings::test(cx)));
1123 let theme = SyntaxTheme::new(vec![
1124 ("operator".to_string(), Color::red().into()),
1125 ("string".to_string(), Color::green().into()),
1126 ]);
1127 let language = Arc::new(
1128 Language::new(
1129 LanguageConfig {
1130 name: "Test".into(),
1131 path_suffixes: vec![".test".to_string()],
1132 ..Default::default()
1133 },
1134 Some(tree_sitter_rust::language()),
1135 )
1136 .with_highlights_query(
1137 r#"
1138 ":" @operator
1139 (string_literal) @string
1140 "#,
1141 )
1142 .unwrap(),
1143 );
1144 language.set_theme(&theme);
1145
1146 let (text, highlighted_ranges) = marked_text_ranges(r#"const[] [a]: B = "c [d]""#);
1147
1148 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
1149 buffer.condition(&cx, |buf, _| !buf.is_parsing()).await;
1150
1151 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
1152 let buffer_snapshot = buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx));
1153
1154 let font_cache = cx.font_cache();
1155 let family_id = font_cache.load_family(&["Courier"]).unwrap();
1156 let font_id = font_cache
1157 .select_font(family_id, &Default::default())
1158 .unwrap();
1159 let font_size = 16.0;
1160 let map = cx.add_model(|cx| DisplayMap::new(buffer, font_id, font_size, None, 1, 1, cx));
1161
1162 enum MyType {}
1163
1164 let style = HighlightStyle {
1165 color: Some(Color::blue()),
1166 ..Default::default()
1167 };
1168
1169 map.update(cx, |map, _cx| {
1170 map.highlight_text(
1171 TypeId::of::<MyType>(),
1172 highlighted_ranges
1173 .into_iter()
1174 .map(|range| {
1175 buffer_snapshot.anchor_before(range.start)
1176 ..buffer_snapshot.anchor_before(range.end)
1177 })
1178 .collect(),
1179 style,
1180 );
1181 });
1182
1183 assert_eq!(
1184 cx.update(|cx| chunks(0..10, &map, &theme, cx)),
1185 [
1186 ("const ".to_string(), None, None),
1187 ("a".to_string(), None, Some(Color::blue())),
1188 (":".to_string(), Some(Color::red()), None),
1189 (" B = ".to_string(), None, None),
1190 ("\"c ".to_string(), Some(Color::green()), None),
1191 ("d".to_string(), Some(Color::green()), Some(Color::blue())),
1192 ("\"".to_string(), Some(Color::green()), None),
1193 ]
1194 );
1195 }
1196
1197 #[gpui::test]
1198 fn test_clip_point(cx: &mut gpui::MutableAppContext) {
1199 cx.set_global(Settings::test(cx));
1200 fn assert(text: &str, shift_right: bool, bias: Bias, cx: &mut gpui::MutableAppContext) {
1201 let (unmarked_snapshot, mut markers) = marked_display_snapshot(text, cx);
1202
1203 match bias {
1204 Bias::Left => {
1205 if shift_right {
1206 *markers[1].column_mut() += 1;
1207 }
1208
1209 assert_eq!(unmarked_snapshot.clip_point(markers[1], bias), markers[0])
1210 }
1211 Bias::Right => {
1212 if shift_right {
1213 *markers[0].column_mut() += 1;
1214 }
1215
1216 assert_eq!(unmarked_snapshot.clip_point(markers[0], bias), markers[1])
1217 }
1218 };
1219 }
1220
1221 use Bias::{Left, Right};
1222 assert("||α", false, Left, cx);
1223 assert("||α", true, Left, cx);
1224 assert("||α", false, Right, cx);
1225 assert("|α|", true, Right, cx);
1226 assert("||✋", false, Left, cx);
1227 assert("||✋", true, Left, cx);
1228 assert("||✋", false, Right, cx);
1229 assert("|✋|", true, Right, cx);
1230 assert("||🍐", false, Left, cx);
1231 assert("||🍐", true, Left, cx);
1232 assert("||🍐", false, Right, cx);
1233 assert("|🍐|", true, Right, cx);
1234 assert("||\t", false, Left, cx);
1235 assert("||\t", true, Left, cx);
1236 assert("||\t", false, Right, cx);
1237 assert("|\t|", true, Right, cx);
1238 assert(" ||\t", false, Left, cx);
1239 assert(" ||\t", true, Left, cx);
1240 assert(" ||\t", false, Right, cx);
1241 assert(" |\t|", true, Right, cx);
1242 assert(" ||\t", false, Left, cx);
1243 assert(" ||\t", false, Right, cx);
1244 }
1245
1246 #[gpui::test]
1247 fn test_clip_at_line_ends(cx: &mut gpui::MutableAppContext) {
1248 cx.set_global(Settings::test(cx));
1249
1250 fn assert(text: &str, cx: &mut gpui::MutableAppContext) {
1251 let (mut unmarked_snapshot, markers) = marked_display_snapshot(text, cx);
1252 unmarked_snapshot.clip_at_line_ends = true;
1253 assert_eq!(
1254 unmarked_snapshot.clip_point(markers[1], Bias::Left),
1255 markers[0]
1256 );
1257 }
1258
1259 assert("||", cx);
1260 assert("|a|", cx);
1261 assert("a|b|", cx);
1262 assert("a|α|", cx);
1263 }
1264
1265 #[gpui::test]
1266 fn test_tabs_with_multibyte_chars(cx: &mut gpui::MutableAppContext) {
1267 cx.set_global(Settings::test(cx));
1268 let text = "✅\t\tα\nβ\t\n🏀β\t\tγ";
1269 let buffer = MultiBuffer::build_simple(text, cx);
1270 let font_cache = cx.font_cache();
1271 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
1272 let font_id = font_cache
1273 .select_font(family_id, &Default::default())
1274 .unwrap();
1275 let font_size = 14.0;
1276
1277 let map =
1278 cx.add_model(|cx| DisplayMap::new(buffer.clone(), font_id, font_size, None, 1, 1, cx));
1279 let map = map.update(cx, |map, cx| map.snapshot(cx));
1280 assert_eq!(map.text(), "✅ α\nβ \n🏀β γ");
1281 assert_eq!(
1282 map.text_chunks(0).collect::<String>(),
1283 "✅ α\nβ \n🏀β γ"
1284 );
1285 assert_eq!(map.text_chunks(1).collect::<String>(), "β \n🏀β γ");
1286 assert_eq!(map.text_chunks(2).collect::<String>(), "🏀β γ");
1287
1288 let point = Point::new(0, "✅\t\t".len() as u32);
1289 let display_point = DisplayPoint::new(0, "✅ ".len() as u32);
1290 assert_eq!(point.to_display_point(&map), display_point);
1291 assert_eq!(display_point.to_point(&map), point);
1292
1293 let point = Point::new(1, "β\t".len() as u32);
1294 let display_point = DisplayPoint::new(1, "β ".len() as u32);
1295 assert_eq!(point.to_display_point(&map), display_point);
1296 assert_eq!(display_point.to_point(&map), point,);
1297
1298 let point = Point::new(2, "🏀β\t\t".len() as u32);
1299 let display_point = DisplayPoint::new(2, "🏀β ".len() as u32);
1300 assert_eq!(point.to_display_point(&map), display_point);
1301 assert_eq!(display_point.to_point(&map), point,);
1302
1303 // Display points inside of expanded tabs
1304 assert_eq!(
1305 DisplayPoint::new(0, "✅ ".len() as u32).to_point(&map),
1306 Point::new(0, "✅\t".len() as u32),
1307 );
1308 assert_eq!(
1309 DisplayPoint::new(0, "✅ ".len() as u32).to_point(&map),
1310 Point::new(0, "✅".len() as u32),
1311 );
1312
1313 // Clipping display points inside of multi-byte characters
1314 assert_eq!(
1315 map.clip_point(DisplayPoint::new(0, "✅".len() as u32 - 1), Left),
1316 DisplayPoint::new(0, 0)
1317 );
1318 assert_eq!(
1319 map.clip_point(DisplayPoint::new(0, "✅".len() as u32 - 1), Bias::Right),
1320 DisplayPoint::new(0, "✅".len() as u32)
1321 );
1322 }
1323
1324 #[gpui::test]
1325 fn test_max_point(cx: &mut gpui::MutableAppContext) {
1326 cx.set_global(Settings::test(cx));
1327 let buffer = MultiBuffer::build_simple("aaa\n\t\tbbb", cx);
1328 let font_cache = cx.font_cache();
1329 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
1330 let font_id = font_cache
1331 .select_font(family_id, &Default::default())
1332 .unwrap();
1333 let font_size = 14.0;
1334 let map =
1335 cx.add_model(|cx| DisplayMap::new(buffer.clone(), font_id, font_size, None, 1, 1, cx));
1336 assert_eq!(
1337 map.update(cx, |map, cx| map.snapshot(cx)).max_point(),
1338 DisplayPoint::new(1, 11)
1339 )
1340 }
1341
1342 fn syntax_chunks<'a>(
1343 rows: Range<u32>,
1344 map: &ModelHandle<DisplayMap>,
1345 theme: &'a SyntaxTheme,
1346 cx: &mut MutableAppContext,
1347 ) -> Vec<(String, Option<Color>)> {
1348 chunks(rows, map, theme, cx)
1349 .into_iter()
1350 .map(|(text, color, _)| (text, color))
1351 .collect()
1352 }
1353
1354 fn chunks<'a>(
1355 rows: Range<u32>,
1356 map: &ModelHandle<DisplayMap>,
1357 theme: &'a SyntaxTheme,
1358 cx: &mut MutableAppContext,
1359 ) -> Vec<(String, Option<Color>, Option<Color>)> {
1360 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
1361 let mut chunks: Vec<(String, Option<Color>, Option<Color>)> = Vec::new();
1362 for chunk in snapshot.chunks(rows, true) {
1363 let syntax_color = chunk
1364 .syntax_highlight_id
1365 .and_then(|id| id.style(theme)?.color);
1366 let highlight_color = chunk.highlight_style.and_then(|style| style.color);
1367 if let Some((last_chunk, last_syntax_color, last_highlight_color)) = chunks.last_mut() {
1368 if syntax_color == *last_syntax_color && highlight_color == *last_highlight_color {
1369 last_chunk.push_str(chunk.text);
1370 continue;
1371 }
1372 }
1373 chunks.push((chunk.text.to_string(), syntax_color, highlight_color));
1374 }
1375 chunks
1376 }
1377}