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::{OffsetUtf16, 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 text_highlights(&self, type_id: TypeId) -> Option<(HighlightStyle, &[Range<Anchor>])> {
199 let highlights = self.text_highlights.get(&Some(type_id))?;
200 Some((highlights.0, &highlights.1))
201 }
202
203 pub fn clear_text_highlights(
204 &mut self,
205 type_id: TypeId,
206 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
207 self.text_highlights.remove(&Some(type_id))
208 }
209
210 pub fn set_font(&self, font_id: FontId, font_size: f32, cx: &mut ModelContext<Self>) -> bool {
211 self.wrap_map
212 .update(cx, |map, cx| map.set_font(font_id, font_size, cx))
213 }
214
215 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut ModelContext<Self>) -> bool {
216 self.wrap_map
217 .update(cx, |map, cx| map.set_wrap_width(width, cx))
218 }
219
220 fn tab_size(buffer: &ModelHandle<MultiBuffer>, cx: &mut ModelContext<Self>) -> NonZeroU32 {
221 let language_name = buffer
222 .read(cx)
223 .as_singleton()
224 .and_then(|buffer| buffer.read(cx).language())
225 .map(|language| language.name());
226
227 cx.global::<Settings>().tab_size(language_name.as_deref())
228 }
229
230 #[cfg(test)]
231 pub fn is_rewrapping(&self, cx: &gpui::AppContext) -> bool {
232 self.wrap_map.read(cx).is_rewrapping()
233 }
234}
235
236pub struct DisplaySnapshot {
237 pub buffer_snapshot: MultiBufferSnapshot,
238 folds_snapshot: fold_map::FoldSnapshot,
239 tabs_snapshot: tab_map::TabSnapshot,
240 wraps_snapshot: wrap_map::WrapSnapshot,
241 blocks_snapshot: block_map::BlockSnapshot,
242 text_highlights: TextHighlights,
243 clip_at_line_ends: bool,
244}
245
246impl DisplaySnapshot {
247 #[cfg(test)]
248 pub fn fold_count(&self) -> usize {
249 self.folds_snapshot.fold_count()
250 }
251
252 pub fn is_empty(&self) -> bool {
253 self.buffer_snapshot.len() == 0
254 }
255
256 pub fn buffer_rows<'a>(&'a self, start_row: u32) -> DisplayBufferRows<'a> {
257 self.blocks_snapshot.buffer_rows(start_row)
258 }
259
260 pub fn max_buffer_row(&self) -> u32 {
261 self.buffer_snapshot.max_buffer_row()
262 }
263
264 pub fn prev_line_boundary(&self, mut point: Point) -> (Point, DisplayPoint) {
265 loop {
266 let mut fold_point = self.folds_snapshot.to_fold_point(point, Bias::Left);
267 *fold_point.column_mut() = 0;
268 point = fold_point.to_buffer_point(&self.folds_snapshot);
269
270 let mut display_point = self.point_to_display_point(point, Bias::Left);
271 *display_point.column_mut() = 0;
272 let next_point = self.display_point_to_point(display_point, Bias::Left);
273 if next_point == point {
274 return (point, display_point);
275 }
276 point = next_point;
277 }
278 }
279
280 pub fn next_line_boundary(&self, mut point: Point) -> (Point, DisplayPoint) {
281 loop {
282 let mut fold_point = self.folds_snapshot.to_fold_point(point, Bias::Right);
283 *fold_point.column_mut() = self.folds_snapshot.line_len(fold_point.row());
284 point = fold_point.to_buffer_point(&self.folds_snapshot);
285
286 let mut display_point = self.point_to_display_point(point, Bias::Right);
287 *display_point.column_mut() = self.line_len(display_point.row());
288 let next_point = self.display_point_to_point(display_point, Bias::Right);
289 if next_point == point {
290 return (point, display_point);
291 }
292 point = next_point;
293 }
294 }
295
296 pub fn expand_to_line(&self, range: Range<Point>) -> Range<Point> {
297 let mut new_start = self.prev_line_boundary(range.start).0;
298 let mut new_end = self.next_line_boundary(range.end).0;
299
300 if new_start.row == range.start.row && new_end.row == range.end.row {
301 if new_end.row < self.buffer_snapshot.max_point().row {
302 new_end.row += 1;
303 new_end.column = 0;
304 } else if new_start.row > 0 {
305 new_start.row -= 1;
306 new_start.column = self.buffer_snapshot.line_len(new_start.row);
307 }
308 }
309
310 new_start..new_end
311 }
312
313 fn point_to_display_point(&self, point: Point, bias: Bias) -> DisplayPoint {
314 let fold_point = self.folds_snapshot.to_fold_point(point, bias);
315 let tab_point = self.tabs_snapshot.to_tab_point(fold_point);
316 let wrap_point = self.wraps_snapshot.from_tab_point(tab_point);
317 let block_point = self.blocks_snapshot.to_block_point(wrap_point);
318 DisplayPoint(block_point)
319 }
320
321 fn display_point_to_point(&self, point: DisplayPoint, bias: Bias) -> Point {
322 let block_point = point.0;
323 let wrap_point = self.blocks_snapshot.to_wrap_point(block_point);
324 let tab_point = self.wraps_snapshot.to_tab_point(wrap_point);
325 let fold_point = self.tabs_snapshot.to_fold_point(tab_point, bias).0;
326 fold_point.to_buffer_point(&self.folds_snapshot)
327 }
328
329 pub fn max_point(&self) -> DisplayPoint {
330 DisplayPoint(self.blocks_snapshot.max_point())
331 }
332
333 pub fn text_chunks(&self, display_row: u32) -> impl Iterator<Item = &str> {
334 self.blocks_snapshot
335 .chunks(display_row..self.max_point().row() + 1, false, None)
336 .map(|h| h.text)
337 }
338
339 pub fn chunks<'a>(
340 &'a self,
341 display_rows: Range<u32>,
342 language_aware: bool,
343 ) -> DisplayChunks<'a> {
344 self.blocks_snapshot
345 .chunks(display_rows, language_aware, Some(&self.text_highlights))
346 }
347
348 pub fn chars_at<'a>(&'a self, point: DisplayPoint) -> impl Iterator<Item = char> + 'a {
349 let mut column = 0;
350 let mut chars = self.text_chunks(point.row()).flat_map(str::chars);
351 while column < point.column() {
352 if let Some(c) = chars.next() {
353 column += c.len_utf8() as u32;
354 } else {
355 break;
356 }
357 }
358 chars
359 }
360
361 pub fn column_to_chars(&self, display_row: u32, target: u32) -> u32 {
362 let mut count = 0;
363 let mut column = 0;
364 for c in self.chars_at(DisplayPoint::new(display_row, 0)) {
365 if column >= target {
366 break;
367 }
368 count += 1;
369 column += c.len_utf8() as u32;
370 }
371 count
372 }
373
374 pub fn column_from_chars(&self, display_row: u32, char_count: u32) -> u32 {
375 let mut count = 0;
376 let mut column = 0;
377 for c in self.chars_at(DisplayPoint::new(display_row, 0)) {
378 if c == '\n' || count >= char_count {
379 break;
380 }
381 count += 1;
382 column += c.len_utf8() as u32;
383 }
384 column
385 }
386
387 pub fn clip_point(&self, point: DisplayPoint, bias: Bias) -> DisplayPoint {
388 let mut clipped = self.blocks_snapshot.clip_point(point.0, bias);
389 if self.clip_at_line_ends {
390 clipped = self.clip_at_line_end(DisplayPoint(clipped)).0
391 }
392 DisplayPoint(clipped)
393 }
394
395 pub fn clip_at_line_end(&self, point: DisplayPoint) -> DisplayPoint {
396 let mut point = point.0;
397 if point.column == self.line_len(point.row) {
398 point.column = point.column.saturating_sub(1);
399 point = self.blocks_snapshot.clip_point(point, Bias::Left);
400 }
401 DisplayPoint(point)
402 }
403
404 pub fn folds_in_range<'a, T>(
405 &'a self,
406 range: Range<T>,
407 ) -> impl Iterator<Item = &'a Range<Anchor>>
408 where
409 T: ToOffset,
410 {
411 self.folds_snapshot.folds_in_range(range)
412 }
413
414 pub fn blocks_in_range<'a>(
415 &'a self,
416 rows: Range<u32>,
417 ) -> impl Iterator<Item = (u32, &'a TransformBlock)> {
418 self.blocks_snapshot.blocks_in_range(rows)
419 }
420
421 pub fn intersects_fold<T: ToOffset>(&self, offset: T) -> bool {
422 self.folds_snapshot.intersects_fold(offset)
423 }
424
425 pub fn is_line_folded(&self, display_row: u32) -> bool {
426 let block_point = BlockPoint(Point::new(display_row, 0));
427 let wrap_point = self.blocks_snapshot.to_wrap_point(block_point);
428 let tab_point = self.wraps_snapshot.to_tab_point(wrap_point);
429 self.folds_snapshot.is_line_folded(tab_point.row())
430 }
431
432 pub fn is_block_line(&self, display_row: u32) -> bool {
433 self.blocks_snapshot.is_block_line(display_row)
434 }
435
436 pub fn soft_wrap_indent(&self, display_row: u32) -> Option<u32> {
437 let wrap_row = self
438 .blocks_snapshot
439 .to_wrap_point(BlockPoint::new(display_row, 0))
440 .row();
441 self.wraps_snapshot.soft_wrap_indent(wrap_row)
442 }
443
444 pub fn text(&self) -> String {
445 self.text_chunks(0).collect()
446 }
447
448 pub fn line(&self, display_row: u32) -> String {
449 let mut result = String::new();
450 for chunk in self.text_chunks(display_row) {
451 if let Some(ix) = chunk.find('\n') {
452 result.push_str(&chunk[0..ix]);
453 break;
454 } else {
455 result.push_str(chunk);
456 }
457 }
458 result
459 }
460
461 pub fn line_indent(&self, display_row: u32) -> (u32, bool) {
462 let mut indent = 0;
463 let mut is_blank = true;
464 for c in self.chars_at(DisplayPoint::new(display_row, 0)) {
465 if c == ' ' {
466 indent += 1;
467 } else {
468 is_blank = c == '\n';
469 break;
470 }
471 }
472 (indent, is_blank)
473 }
474
475 pub fn line_len(&self, row: u32) -> u32 {
476 self.blocks_snapshot.line_len(row)
477 }
478
479 pub fn longest_row(&self) -> u32 {
480 self.blocks_snapshot.longest_row()
481 }
482
483 #[cfg(any(test, feature = "test-support"))]
484 pub fn highlight_ranges<Tag: ?Sized + 'static>(
485 &self,
486 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
487 let type_id = TypeId::of::<Tag>();
488 self.text_highlights.get(&Some(type_id)).cloned()
489 }
490}
491
492#[derive(Copy, Clone, Default, Eq, Ord, PartialOrd, PartialEq)]
493pub struct DisplayPoint(BlockPoint);
494
495impl Debug for DisplayPoint {
496 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
497 f.write_fmt(format_args!(
498 "DisplayPoint({}, {})",
499 self.row(),
500 self.column()
501 ))
502 }
503}
504
505impl DisplayPoint {
506 pub fn new(row: u32, column: u32) -> Self {
507 Self(BlockPoint(Point::new(row, column)))
508 }
509
510 pub fn zero() -> Self {
511 Self::new(0, 0)
512 }
513
514 pub fn is_zero(&self) -> bool {
515 self.0.is_zero()
516 }
517
518 pub fn row(self) -> u32 {
519 self.0.row
520 }
521
522 pub fn column(self) -> u32 {
523 self.0.column
524 }
525
526 pub fn row_mut(&mut self) -> &mut u32 {
527 &mut self.0.row
528 }
529
530 pub fn column_mut(&mut self) -> &mut u32 {
531 &mut self.0.column
532 }
533
534 pub fn to_point(self, map: &DisplaySnapshot) -> Point {
535 map.display_point_to_point(self, Bias::Left)
536 }
537
538 pub fn to_offset(self, map: &DisplaySnapshot, bias: Bias) -> usize {
539 let unblocked_point = map.blocks_snapshot.to_wrap_point(self.0);
540 let unwrapped_point = map.wraps_snapshot.to_tab_point(unblocked_point);
541 let unexpanded_point = map.tabs_snapshot.to_fold_point(unwrapped_point, bias).0;
542 unexpanded_point.to_buffer_offset(&map.folds_snapshot)
543 }
544}
545
546impl ToDisplayPoint for usize {
547 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
548 map.point_to_display_point(self.to_point(&map.buffer_snapshot), Bias::Left)
549 }
550}
551
552impl ToDisplayPoint for OffsetUtf16 {
553 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
554 self.to_offset(&map.buffer_snapshot).to_display_point(map)
555 }
556}
557
558impl ToDisplayPoint for Point {
559 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
560 map.point_to_display_point(*self, Bias::Left)
561 }
562}
563
564impl ToDisplayPoint for Anchor {
565 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
566 self.to_point(&map.buffer_snapshot).to_display_point(map)
567 }
568}
569
570#[cfg(test)]
571pub mod tests {
572 use super::*;
573 use crate::{movement, test::marked_display_snapshot};
574 use gpui::{color::Color, elements::*, test::observe, MutableAppContext};
575 use language::{Buffer, Language, LanguageConfig, RandomCharIter, SelectionGoal};
576 use rand::{prelude::*, Rng};
577 use smol::stream::StreamExt;
578 use std::{env, sync::Arc};
579 use theme::SyntaxTheme;
580 use util::test::{marked_text_ranges, sample_text};
581 use Bias::*;
582
583 #[gpui::test(iterations = 100)]
584 async fn test_random_display_map(cx: &mut gpui::TestAppContext, mut rng: StdRng) {
585 cx.foreground().set_block_on_ticks(0..=50);
586 cx.foreground().forbid_parking();
587 let operations = env::var("OPERATIONS")
588 .map(|i| i.parse().expect("invalid `OPERATIONS` variable"))
589 .unwrap_or(10);
590
591 let font_cache = cx.font_cache().clone();
592 let tab_size = rng.gen_range(1..=4);
593 let buffer_start_excerpt_header_height = rng.gen_range(1..=5);
594 let excerpt_header_height = rng.gen_range(1..=5);
595 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
596 let font_id = font_cache
597 .select_font(family_id, &Default::default())
598 .unwrap();
599 let font_size = 14.0;
600 let max_wrap_width = 300.0;
601 let mut wrap_width = if rng.gen_bool(0.1) {
602 None
603 } else {
604 Some(rng.gen_range(0.0..=max_wrap_width))
605 };
606
607 log::info!("tab size: {}", tab_size);
608 log::info!("wrap width: {:?}", wrap_width);
609
610 cx.update(|cx| cx.set_global(Settings::test(cx)));
611
612 let buffer = cx.update(|cx| {
613 if rng.gen() {
614 let len = rng.gen_range(0..10);
615 let text = RandomCharIter::new(&mut rng).take(len).collect::<String>();
616 MultiBuffer::build_simple(&text, cx)
617 } else {
618 MultiBuffer::build_random(&mut rng, cx)
619 }
620 });
621
622 let map = cx.add_model(|cx| {
623 DisplayMap::new(
624 buffer.clone(),
625 font_id,
626 font_size,
627 wrap_width,
628 buffer_start_excerpt_header_height,
629 excerpt_header_height,
630 cx,
631 )
632 });
633 let mut notifications = observe(&map, cx);
634 let mut fold_count = 0;
635 let mut blocks = Vec::new();
636
637 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
638 log::info!("buffer text: {:?}", snapshot.buffer_snapshot.text());
639 log::info!("fold text: {:?}", snapshot.folds_snapshot.text());
640 log::info!("tab text: {:?}", snapshot.tabs_snapshot.text());
641 log::info!("wrap text: {:?}", snapshot.wraps_snapshot.text());
642 log::info!("block text: {:?}", snapshot.blocks_snapshot.text());
643 log::info!("display text: {:?}", snapshot.text());
644
645 for _i in 0..operations {
646 match rng.gen_range(0..100) {
647 0..=19 => {
648 wrap_width = if rng.gen_bool(0.2) {
649 None
650 } else {
651 Some(rng.gen_range(0.0..=max_wrap_width))
652 };
653 log::info!("setting wrap width to {:?}", wrap_width);
654 map.update(cx, |map, cx| map.set_wrap_width(wrap_width, cx));
655 }
656 20..=44 => {
657 map.update(cx, |map, cx| {
658 if rng.gen() || blocks.is_empty() {
659 let buffer = map.snapshot(cx).buffer_snapshot;
660 let block_properties = (0..rng.gen_range(1..=1))
661 .map(|_| {
662 let position =
663 buffer.anchor_after(buffer.clip_offset(
664 rng.gen_range(0..=buffer.len()),
665 Bias::Left,
666 ));
667
668 let disposition = if rng.gen() {
669 BlockDisposition::Above
670 } else {
671 BlockDisposition::Below
672 };
673 let height = rng.gen_range(1..5);
674 log::info!(
675 "inserting block {:?} {:?} with height {}",
676 disposition,
677 position.to_point(&buffer),
678 height
679 );
680 BlockProperties {
681 style: BlockStyle::Fixed,
682 position,
683 height,
684 disposition,
685 render: Arc::new(|_| Empty::new().boxed()),
686 }
687 })
688 .collect::<Vec<_>>();
689 blocks.extend(map.insert_blocks(block_properties, cx));
690 } else {
691 blocks.shuffle(&mut rng);
692 let remove_count = rng.gen_range(1..=4.min(blocks.len()));
693 let block_ids_to_remove = (0..remove_count)
694 .map(|_| blocks.remove(rng.gen_range(0..blocks.len())))
695 .collect();
696 log::info!("removing block ids {:?}", block_ids_to_remove);
697 map.remove_blocks(block_ids_to_remove, cx);
698 }
699 });
700 }
701 45..=79 => {
702 let mut ranges = Vec::new();
703 for _ in 0..rng.gen_range(1..=3) {
704 buffer.read_with(cx, |buffer, cx| {
705 let buffer = buffer.read(cx);
706 let end = buffer.clip_offset(rng.gen_range(0..=buffer.len()), Right);
707 let start = buffer.clip_offset(rng.gen_range(0..=end), Left);
708 ranges.push(start..end);
709 });
710 }
711
712 if rng.gen() && fold_count > 0 {
713 log::info!("unfolding ranges: {:?}", ranges);
714 map.update(cx, |map, cx| {
715 map.unfold(ranges, true, cx);
716 });
717 } else {
718 log::info!("folding ranges: {:?}", ranges);
719 map.update(cx, |map, cx| {
720 map.fold(ranges, cx);
721 });
722 }
723 }
724 _ => {
725 buffer.update(cx, |buffer, cx| buffer.randomly_mutate(&mut rng, 5, cx));
726 }
727 }
728
729 if map.read_with(cx, |map, cx| map.is_rewrapping(cx)) {
730 notifications.next().await.unwrap();
731 }
732
733 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
734 fold_count = snapshot.fold_count();
735 log::info!("buffer text: {:?}", snapshot.buffer_snapshot.text());
736 log::info!("fold text: {:?}", snapshot.folds_snapshot.text());
737 log::info!("tab text: {:?}", snapshot.tabs_snapshot.text());
738 log::info!("wrap text: {:?}", snapshot.wraps_snapshot.text());
739 log::info!("block text: {:?}", snapshot.blocks_snapshot.text());
740 log::info!("display text: {:?}", snapshot.text());
741
742 // Line boundaries
743 let buffer = &snapshot.buffer_snapshot;
744 for _ in 0..5 {
745 let row = rng.gen_range(0..=buffer.max_point().row);
746 let column = rng.gen_range(0..=buffer.line_len(row));
747 let point = buffer.clip_point(Point::new(row, column), Left);
748
749 let (prev_buffer_bound, prev_display_bound) = snapshot.prev_line_boundary(point);
750 let (next_buffer_bound, next_display_bound) = snapshot.next_line_boundary(point);
751
752 assert!(prev_buffer_bound <= point);
753 assert!(next_buffer_bound >= point);
754 assert_eq!(prev_buffer_bound.column, 0);
755 assert_eq!(prev_display_bound.column(), 0);
756 if next_buffer_bound < buffer.max_point() {
757 assert_eq!(buffer.chars_at(next_buffer_bound).next(), Some('\n'));
758 }
759
760 assert_eq!(
761 prev_display_bound,
762 prev_buffer_bound.to_display_point(&snapshot),
763 "row boundary before {:?}. reported buffer row boundary: {:?}",
764 point,
765 prev_buffer_bound
766 );
767 assert_eq!(
768 next_display_bound,
769 next_buffer_bound.to_display_point(&snapshot),
770 "display row boundary after {:?}. reported buffer row boundary: {:?}",
771 point,
772 next_buffer_bound
773 );
774 assert_eq!(
775 prev_buffer_bound,
776 prev_display_bound.to_point(&snapshot),
777 "row boundary before {:?}. reported display row boundary: {:?}",
778 point,
779 prev_display_bound
780 );
781 assert_eq!(
782 next_buffer_bound,
783 next_display_bound.to_point(&snapshot),
784 "row boundary after {:?}. reported display row boundary: {:?}",
785 point,
786 next_display_bound
787 );
788 }
789
790 // Movement
791 let min_point = snapshot.clip_point(DisplayPoint::new(0, 0), Left);
792 let max_point = snapshot.clip_point(snapshot.max_point(), Right);
793 for _ in 0..5 {
794 let row = rng.gen_range(0..=snapshot.max_point().row());
795 let column = rng.gen_range(0..=snapshot.line_len(row));
796 let point = snapshot.clip_point(DisplayPoint::new(row, column), Left);
797
798 log::info!("Moving from point {:?}", point);
799
800 let moved_right = movement::right(&snapshot, point);
801 log::info!("Right {:?}", moved_right);
802 if point < max_point {
803 assert!(moved_right > point);
804 if point.column() == snapshot.line_len(point.row())
805 || snapshot.soft_wrap_indent(point.row()).is_some()
806 && point.column() == snapshot.line_len(point.row()) - 1
807 {
808 assert!(moved_right.row() > point.row());
809 }
810 } else {
811 assert_eq!(moved_right, point);
812 }
813
814 let moved_left = movement::left(&snapshot, point);
815 log::info!("Left {:?}", moved_left);
816 if point > min_point {
817 assert!(moved_left < point);
818 if point.column() == 0 {
819 assert!(moved_left.row() < point.row());
820 }
821 } else {
822 assert_eq!(moved_left, point);
823 }
824 }
825 }
826 }
827
828 #[gpui::test(retries = 5)]
829 fn test_soft_wraps(cx: &mut MutableAppContext) {
830 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
831 cx.foreground().forbid_parking();
832
833 let font_cache = cx.font_cache();
834
835 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
836 let font_id = font_cache
837 .select_font(family_id, &Default::default())
838 .unwrap();
839 let font_size = 12.0;
840 let wrap_width = Some(64.);
841 cx.set_global(Settings::test(cx));
842
843 let text = "one two three four five\nsix seven eight";
844 let buffer = MultiBuffer::build_simple(text, cx);
845 let map = cx.add_model(|cx| {
846 DisplayMap::new(buffer.clone(), font_id, font_size, wrap_width, 1, 1, cx)
847 });
848
849 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
850 assert_eq!(
851 snapshot.text_chunks(0).collect::<String>(),
852 "one two \nthree four \nfive\nsix seven \neight"
853 );
854 assert_eq!(
855 snapshot.clip_point(DisplayPoint::new(0, 8), Bias::Left),
856 DisplayPoint::new(0, 7)
857 );
858 assert_eq!(
859 snapshot.clip_point(DisplayPoint::new(0, 8), Bias::Right),
860 DisplayPoint::new(1, 0)
861 );
862 assert_eq!(
863 movement::right(&snapshot, DisplayPoint::new(0, 7)),
864 DisplayPoint::new(1, 0)
865 );
866 assert_eq!(
867 movement::left(&snapshot, DisplayPoint::new(1, 0)),
868 DisplayPoint::new(0, 7)
869 );
870 assert_eq!(
871 movement::up(
872 &snapshot,
873 DisplayPoint::new(1, 10),
874 SelectionGoal::None,
875 false
876 ),
877 (DisplayPoint::new(0, 7), SelectionGoal::Column(10))
878 );
879 assert_eq!(
880 movement::down(
881 &snapshot,
882 DisplayPoint::new(0, 7),
883 SelectionGoal::Column(10),
884 false
885 ),
886 (DisplayPoint::new(1, 10), SelectionGoal::Column(10))
887 );
888 assert_eq!(
889 movement::down(
890 &snapshot,
891 DisplayPoint::new(1, 10),
892 SelectionGoal::Column(10),
893 false
894 ),
895 (DisplayPoint::new(2, 4), SelectionGoal::Column(10))
896 );
897
898 let ix = snapshot.buffer_snapshot.text().find("seven").unwrap();
899 buffer.update(cx, |buffer, cx| {
900 buffer.edit([(ix..ix, "and ")], None, cx);
901 });
902
903 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
904 assert_eq!(
905 snapshot.text_chunks(1).collect::<String>(),
906 "three four \nfive\nsix and \nseven eight"
907 );
908
909 // Re-wrap on font size changes
910 map.update(cx, |map, cx| map.set_font(font_id, font_size + 3., cx));
911
912 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
913 assert_eq!(
914 snapshot.text_chunks(1).collect::<String>(),
915 "three \nfour five\nsix and \nseven \neight"
916 )
917 }
918
919 #[gpui::test]
920 fn test_text_chunks(cx: &mut gpui::MutableAppContext) {
921 cx.set_global(Settings::test(cx));
922 let text = sample_text(6, 6, 'a');
923 let buffer = MultiBuffer::build_simple(&text, cx);
924 let family_id = cx.font_cache().load_family(&["Helvetica"]).unwrap();
925 let font_id = cx
926 .font_cache()
927 .select_font(family_id, &Default::default())
928 .unwrap();
929 let font_size = 14.0;
930 let map =
931 cx.add_model(|cx| DisplayMap::new(buffer.clone(), font_id, font_size, None, 1, 1, cx));
932 buffer.update(cx, |buffer, cx| {
933 buffer.edit(
934 vec![
935 (Point::new(1, 0)..Point::new(1, 0), "\t"),
936 (Point::new(1, 1)..Point::new(1, 1), "\t"),
937 (Point::new(2, 1)..Point::new(2, 1), "\t"),
938 ],
939 None,
940 cx,
941 )
942 });
943
944 assert_eq!(
945 map.update(cx, |map, cx| map.snapshot(cx))
946 .text_chunks(1)
947 .collect::<String>()
948 .lines()
949 .next(),
950 Some(" b bbbbb")
951 );
952 assert_eq!(
953 map.update(cx, |map, cx| map.snapshot(cx))
954 .text_chunks(2)
955 .collect::<String>()
956 .lines()
957 .next(),
958 Some("c ccccc")
959 );
960 }
961
962 #[gpui::test]
963 async fn test_chunks(cx: &mut gpui::TestAppContext) {
964 use unindent::Unindent as _;
965
966 let text = r#"
967 fn outer() {}
968
969 mod module {
970 fn inner() {}
971 }"#
972 .unindent();
973
974 let theme = SyntaxTheme::new(vec![
975 ("mod.body".to_string(), Color::red().into()),
976 ("fn.name".to_string(), Color::blue().into()),
977 ]);
978 let language = Arc::new(
979 Language::new(
980 LanguageConfig {
981 name: "Test".into(),
982 path_suffixes: vec![".test".to_string()],
983 ..Default::default()
984 },
985 Some(tree_sitter_rust::language()),
986 )
987 .with_highlights_query(
988 r#"
989 (mod_item name: (identifier) body: _ @mod.body)
990 (function_item name: (identifier) @fn.name)
991 "#,
992 )
993 .unwrap(),
994 );
995 language.set_theme(&theme);
996 cx.update(|cx| {
997 let mut settings = Settings::test(cx);
998 settings.editor_defaults.tab_size = Some(2.try_into().unwrap());
999 cx.set_global(settings);
1000 });
1001
1002 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
1003 buffer.condition(&cx, |buf, _| !buf.is_parsing()).await;
1004 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
1005
1006 let font_cache = cx.font_cache();
1007 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
1008 let font_id = font_cache
1009 .select_font(family_id, &Default::default())
1010 .unwrap();
1011 let font_size = 14.0;
1012
1013 let map = cx.add_model(|cx| DisplayMap::new(buffer, font_id, font_size, None, 1, 1, cx));
1014 assert_eq!(
1015 cx.update(|cx| syntax_chunks(0..5, &map, &theme, cx)),
1016 vec![
1017 ("fn ".to_string(), None),
1018 ("outer".to_string(), Some(Color::blue())),
1019 ("() {}\n\nmod module ".to_string(), None),
1020 ("{\n fn ".to_string(), Some(Color::red())),
1021 ("inner".to_string(), Some(Color::blue())),
1022 ("() {}\n}".to_string(), Some(Color::red())),
1023 ]
1024 );
1025 assert_eq!(
1026 cx.update(|cx| syntax_chunks(3..5, &map, &theme, cx)),
1027 vec![
1028 (" fn ".to_string(), Some(Color::red())),
1029 ("inner".to_string(), Some(Color::blue())),
1030 ("() {}\n}".to_string(), Some(Color::red())),
1031 ]
1032 );
1033
1034 map.update(cx, |map, cx| {
1035 map.fold(vec![Point::new(0, 6)..Point::new(3, 2)], cx)
1036 });
1037 assert_eq!(
1038 cx.update(|cx| syntax_chunks(0..2, &map, &theme, cx)),
1039 vec![
1040 ("fn ".to_string(), None),
1041 ("out".to_string(), Some(Color::blue())),
1042 ("…".to_string(), None),
1043 (" fn ".to_string(), Some(Color::red())),
1044 ("inner".to_string(), Some(Color::blue())),
1045 ("() {}\n}".to_string(), Some(Color::red())),
1046 ]
1047 );
1048 }
1049
1050 #[gpui::test]
1051 async fn test_chunks_with_soft_wrapping(cx: &mut gpui::TestAppContext) {
1052 use unindent::Unindent as _;
1053
1054 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
1055
1056 let text = r#"
1057 fn outer() {}
1058
1059 mod module {
1060 fn inner() {}
1061 }"#
1062 .unindent();
1063
1064 let theme = SyntaxTheme::new(vec![
1065 ("mod.body".to_string(), Color::red().into()),
1066 ("fn.name".to_string(), Color::blue().into()),
1067 ]);
1068 let language = Arc::new(
1069 Language::new(
1070 LanguageConfig {
1071 name: "Test".into(),
1072 path_suffixes: vec![".test".to_string()],
1073 ..Default::default()
1074 },
1075 Some(tree_sitter_rust::language()),
1076 )
1077 .with_highlights_query(
1078 r#"
1079 (mod_item name: (identifier) body: _ @mod.body)
1080 (function_item name: (identifier) @fn.name)
1081 "#,
1082 )
1083 .unwrap(),
1084 );
1085 language.set_theme(&theme);
1086
1087 cx.update(|cx| cx.set_global(Settings::test(cx)));
1088
1089 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
1090 buffer.condition(&cx, |buf, _| !buf.is_parsing()).await;
1091 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
1092
1093 let font_cache = cx.font_cache();
1094
1095 let family_id = font_cache.load_family(&["Courier"]).unwrap();
1096 let font_id = font_cache
1097 .select_font(family_id, &Default::default())
1098 .unwrap();
1099 let font_size = 16.0;
1100
1101 let map =
1102 cx.add_model(|cx| DisplayMap::new(buffer, font_id, font_size, Some(40.0), 1, 1, cx));
1103 assert_eq!(
1104 cx.update(|cx| syntax_chunks(0..5, &map, &theme, cx)),
1105 [
1106 ("fn \n".to_string(), None),
1107 ("oute\nr".to_string(), Some(Color::blue())),
1108 ("() \n{}\n\n".to_string(), None),
1109 ]
1110 );
1111 assert_eq!(
1112 cx.update(|cx| syntax_chunks(3..5, &map, &theme, cx)),
1113 [("{}\n\n".to_string(), None)]
1114 );
1115
1116 map.update(cx, |map, cx| {
1117 map.fold(vec![Point::new(0, 6)..Point::new(3, 2)], cx)
1118 });
1119 assert_eq!(
1120 cx.update(|cx| syntax_chunks(1..4, &map, &theme, cx)),
1121 [
1122 ("out".to_string(), Some(Color::blue())),
1123 ("…\n".to_string(), None),
1124 (" \nfn ".to_string(), Some(Color::red())),
1125 ("i\n".to_string(), Some(Color::blue()))
1126 ]
1127 );
1128 }
1129
1130 #[gpui::test]
1131 async fn test_chunks_with_text_highlights(cx: &mut gpui::TestAppContext) {
1132 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
1133
1134 cx.update(|cx| cx.set_global(Settings::test(cx)));
1135 let theme = SyntaxTheme::new(vec![
1136 ("operator".to_string(), Color::red().into()),
1137 ("string".to_string(), Color::green().into()),
1138 ]);
1139 let language = Arc::new(
1140 Language::new(
1141 LanguageConfig {
1142 name: "Test".into(),
1143 path_suffixes: vec![".test".to_string()],
1144 ..Default::default()
1145 },
1146 Some(tree_sitter_rust::language()),
1147 )
1148 .with_highlights_query(
1149 r#"
1150 ":" @operator
1151 (string_literal) @string
1152 "#,
1153 )
1154 .unwrap(),
1155 );
1156 language.set_theme(&theme);
1157
1158 let (text, highlighted_ranges) = marked_text_ranges(r#"const[] [a]: B = "c [d]""#);
1159
1160 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
1161 buffer.condition(&cx, |buf, _| !buf.is_parsing()).await;
1162
1163 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
1164 let buffer_snapshot = buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx));
1165
1166 let font_cache = cx.font_cache();
1167 let family_id = font_cache.load_family(&["Courier"]).unwrap();
1168 let font_id = font_cache
1169 .select_font(family_id, &Default::default())
1170 .unwrap();
1171 let font_size = 16.0;
1172 let map = cx.add_model(|cx| DisplayMap::new(buffer, font_id, font_size, None, 1, 1, cx));
1173
1174 enum MyType {}
1175
1176 let style = HighlightStyle {
1177 color: Some(Color::blue()),
1178 ..Default::default()
1179 };
1180
1181 map.update(cx, |map, _cx| {
1182 map.highlight_text(
1183 TypeId::of::<MyType>(),
1184 highlighted_ranges
1185 .into_iter()
1186 .map(|range| {
1187 buffer_snapshot.anchor_before(range.start)
1188 ..buffer_snapshot.anchor_before(range.end)
1189 })
1190 .collect(),
1191 style,
1192 );
1193 });
1194
1195 assert_eq!(
1196 cx.update(|cx| chunks(0..10, &map, &theme, cx)),
1197 [
1198 ("const ".to_string(), None, None),
1199 ("a".to_string(), None, Some(Color::blue())),
1200 (":".to_string(), Some(Color::red()), None),
1201 (" B = ".to_string(), None, None),
1202 ("\"c ".to_string(), Some(Color::green()), None),
1203 ("d".to_string(), Some(Color::green()), Some(Color::blue())),
1204 ("\"".to_string(), Some(Color::green()), None),
1205 ]
1206 );
1207 }
1208
1209 #[gpui::test]
1210 fn test_clip_point(cx: &mut gpui::MutableAppContext) {
1211 cx.set_global(Settings::test(cx));
1212 fn assert(text: &str, shift_right: bool, bias: Bias, cx: &mut gpui::MutableAppContext) {
1213 let (unmarked_snapshot, mut markers) = marked_display_snapshot(text, cx);
1214
1215 match bias {
1216 Bias::Left => {
1217 if shift_right {
1218 *markers[1].column_mut() += 1;
1219 }
1220
1221 assert_eq!(unmarked_snapshot.clip_point(markers[1], bias), markers[0])
1222 }
1223 Bias::Right => {
1224 if shift_right {
1225 *markers[0].column_mut() += 1;
1226 }
1227
1228 assert_eq!(unmarked_snapshot.clip_point(markers[0], bias), markers[1])
1229 }
1230 };
1231 }
1232
1233 use Bias::{Left, Right};
1234 assert("||α", false, Left, cx);
1235 assert("||α", true, Left, cx);
1236 assert("||α", false, Right, cx);
1237 assert("|α|", true, Right, cx);
1238 assert("||✋", false, Left, cx);
1239 assert("||✋", true, Left, cx);
1240 assert("||✋", false, Right, cx);
1241 assert("|✋|", true, Right, cx);
1242 assert("||🍐", false, Left, cx);
1243 assert("||🍐", true, Left, cx);
1244 assert("||🍐", false, Right, cx);
1245 assert("|🍐|", true, Right, cx);
1246 assert("||\t", false, Left, cx);
1247 assert("||\t", true, Left, cx);
1248 assert("||\t", false, Right, cx);
1249 assert("|\t|", true, Right, cx);
1250 assert(" ||\t", false, Left, cx);
1251 assert(" ||\t", true, Left, cx);
1252 assert(" ||\t", false, Right, cx);
1253 assert(" |\t|", true, Right, cx);
1254 assert(" ||\t", false, Left, cx);
1255 assert(" ||\t", false, Right, cx);
1256 }
1257
1258 #[gpui::test]
1259 fn test_clip_at_line_ends(cx: &mut gpui::MutableAppContext) {
1260 cx.set_global(Settings::test(cx));
1261
1262 fn assert(text: &str, cx: &mut gpui::MutableAppContext) {
1263 let (mut unmarked_snapshot, markers) = marked_display_snapshot(text, cx);
1264 unmarked_snapshot.clip_at_line_ends = true;
1265 assert_eq!(
1266 unmarked_snapshot.clip_point(markers[1], Bias::Left),
1267 markers[0]
1268 );
1269 }
1270
1271 assert("||", cx);
1272 assert("|a|", cx);
1273 assert("a|b|", cx);
1274 assert("a|α|", cx);
1275 }
1276
1277 #[gpui::test]
1278 fn test_tabs_with_multibyte_chars(cx: &mut gpui::MutableAppContext) {
1279 cx.set_global(Settings::test(cx));
1280 let text = "✅\t\tα\nβ\t\n🏀β\t\tγ";
1281 let buffer = MultiBuffer::build_simple(text, cx);
1282 let font_cache = cx.font_cache();
1283 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
1284 let font_id = font_cache
1285 .select_font(family_id, &Default::default())
1286 .unwrap();
1287 let font_size = 14.0;
1288
1289 let map =
1290 cx.add_model(|cx| DisplayMap::new(buffer.clone(), font_id, font_size, None, 1, 1, cx));
1291 let map = map.update(cx, |map, cx| map.snapshot(cx));
1292 assert_eq!(map.text(), "✅ α\nβ \n🏀β γ");
1293 assert_eq!(
1294 map.text_chunks(0).collect::<String>(),
1295 "✅ α\nβ \n🏀β γ"
1296 );
1297 assert_eq!(map.text_chunks(1).collect::<String>(), "β \n🏀β γ");
1298 assert_eq!(map.text_chunks(2).collect::<String>(), "🏀β γ");
1299
1300 let point = Point::new(0, "✅\t\t".len() as u32);
1301 let display_point = DisplayPoint::new(0, "✅ ".len() as u32);
1302 assert_eq!(point.to_display_point(&map), display_point);
1303 assert_eq!(display_point.to_point(&map), point);
1304
1305 let point = Point::new(1, "β\t".len() as u32);
1306 let display_point = DisplayPoint::new(1, "β ".len() as u32);
1307 assert_eq!(point.to_display_point(&map), display_point);
1308 assert_eq!(display_point.to_point(&map), point,);
1309
1310 let point = Point::new(2, "🏀β\t\t".len() as u32);
1311 let display_point = DisplayPoint::new(2, "🏀β ".len() as u32);
1312 assert_eq!(point.to_display_point(&map), display_point);
1313 assert_eq!(display_point.to_point(&map), point,);
1314
1315 // Display points inside of expanded tabs
1316 assert_eq!(
1317 DisplayPoint::new(0, "✅ ".len() as u32).to_point(&map),
1318 Point::new(0, "✅\t".len() as u32),
1319 );
1320 assert_eq!(
1321 DisplayPoint::new(0, "✅ ".len() as u32).to_point(&map),
1322 Point::new(0, "✅".len() as u32),
1323 );
1324
1325 // Clipping display points inside of multi-byte characters
1326 assert_eq!(
1327 map.clip_point(DisplayPoint::new(0, "✅".len() as u32 - 1), Left),
1328 DisplayPoint::new(0, 0)
1329 );
1330 assert_eq!(
1331 map.clip_point(DisplayPoint::new(0, "✅".len() as u32 - 1), Bias::Right),
1332 DisplayPoint::new(0, "✅".len() as u32)
1333 );
1334 }
1335
1336 #[gpui::test]
1337 fn test_max_point(cx: &mut gpui::MutableAppContext) {
1338 cx.set_global(Settings::test(cx));
1339 let buffer = MultiBuffer::build_simple("aaa\n\t\tbbb", cx);
1340 let font_cache = cx.font_cache();
1341 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
1342 let font_id = font_cache
1343 .select_font(family_id, &Default::default())
1344 .unwrap();
1345 let font_size = 14.0;
1346 let map =
1347 cx.add_model(|cx| DisplayMap::new(buffer.clone(), font_id, font_size, None, 1, 1, cx));
1348 assert_eq!(
1349 map.update(cx, |map, cx| map.snapshot(cx)).max_point(),
1350 DisplayPoint::new(1, 11)
1351 )
1352 }
1353
1354 #[gpui::test]
1355 fn test_changing_tab_size(cx: &mut gpui::MutableAppContext) {
1356 cx.set_global({
1357 let mut settings = Settings::test(cx);
1358 settings.editor_overrides.tab_size = Some(NonZeroU32::new(4).unwrap());
1359 settings
1360 });
1361 let buffer = MultiBuffer::build_simple("\ta\n\tb\n\tc", cx);
1362 let font_cache = cx.font_cache();
1363 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
1364 let font_id = font_cache
1365 .select_font(family_id, &Default::default())
1366 .unwrap();
1367 let font_size = 14.0;
1368
1369 let map =
1370 cx.add_model(|cx| DisplayMap::new(buffer.clone(), font_id, font_size, None, 1, 1, cx));
1371 assert_eq!(
1372 map.update(cx, |map, cx| map.snapshot(cx)).text(),
1373 " a\n b\n c"
1374 );
1375
1376 cx.set_global({
1377 let mut settings = Settings::test(cx);
1378 settings.editor_overrides.tab_size = Some(NonZeroU32::new(2).unwrap());
1379 settings
1380 });
1381 assert_eq!(
1382 map.update(cx, |map, cx| map.snapshot(cx)).text(),
1383 " a\n b\n c"
1384 );
1385 }
1386
1387 fn syntax_chunks<'a>(
1388 rows: Range<u32>,
1389 map: &ModelHandle<DisplayMap>,
1390 theme: &'a SyntaxTheme,
1391 cx: &mut MutableAppContext,
1392 ) -> Vec<(String, Option<Color>)> {
1393 chunks(rows, map, theme, cx)
1394 .into_iter()
1395 .map(|(text, color, _)| (text, color))
1396 .collect()
1397 }
1398
1399 fn chunks<'a>(
1400 rows: Range<u32>,
1401 map: &ModelHandle<DisplayMap>,
1402 theme: &'a SyntaxTheme,
1403 cx: &mut MutableAppContext,
1404 ) -> Vec<(String, Option<Color>, Option<Color>)> {
1405 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
1406 let mut chunks: Vec<(String, Option<Color>, Option<Color>)> = Vec::new();
1407 for chunk in snapshot.chunks(rows, true) {
1408 let syntax_color = chunk
1409 .syntax_highlight_id
1410 .and_then(|id| id.style(theme)?.color);
1411 let highlight_color = chunk.highlight_style.and_then(|style| style.color);
1412 if let Some((last_chunk, last_syntax_color, last_highlight_color)) = chunks.last_mut() {
1413 if syntax_color == *last_syntax_color && highlight_color == *last_highlight_color {
1414 last_chunk.push_str(chunk.text);
1415 continue;
1416 }
1417 }
1418 chunks.push((chunk.text.to_string(), syntax_color, highlight_color));
1419 }
1420 chunks
1421 }
1422}