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(&self, start_row: u32) -> DisplayBufferRows {
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.tab_point_to_wrap_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(&self, display_rows: Range<u32>, language_aware: bool) -> DisplayChunks<'_> {
340 self.blocks_snapshot
341 .chunks(display_rows, language_aware, Some(&self.text_highlights))
342 }
343
344 pub fn chars_at(&self, point: DisplayPoint) -> impl Iterator<Item = char> + '_ {
345 let mut column = 0;
346 let mut chars = self.text_chunks(point.row()).flat_map(str::chars);
347 while column < point.column() {
348 if let Some(c) = chars.next() {
349 column += c.len_utf8() as u32;
350 } else {
351 break;
352 }
353 }
354 chars
355 }
356
357 pub fn column_to_chars(&self, display_row: u32, target: u32) -> u32 {
358 let mut count = 0;
359 let mut column = 0;
360 for c in self.chars_at(DisplayPoint::new(display_row, 0)) {
361 if column >= target {
362 break;
363 }
364 count += 1;
365 column += c.len_utf8() as u32;
366 }
367 count
368 }
369
370 pub fn column_from_chars(&self, display_row: u32, char_count: u32) -> u32 {
371 let mut column = 0;
372
373 for (count, c) in self.chars_at(DisplayPoint::new(display_row, 0)).enumerate() {
374 if c == '\n' || count >= char_count as usize {
375 break;
376 }
377 column += c.len_utf8() as u32;
378 }
379
380 column
381 }
382
383 pub fn clip_point(&self, point: DisplayPoint, bias: Bias) -> DisplayPoint {
384 let mut clipped = self.blocks_snapshot.clip_point(point.0, bias);
385 if self.clip_at_line_ends {
386 clipped = self.clip_at_line_end(DisplayPoint(clipped)).0
387 }
388 DisplayPoint(clipped)
389 }
390
391 pub fn clip_at_line_end(&self, point: DisplayPoint) -> DisplayPoint {
392 let mut point = point.0;
393 if point.column == self.line_len(point.row) {
394 point.column = point.column.saturating_sub(1);
395 point = self.blocks_snapshot.clip_point(point, Bias::Left);
396 }
397 DisplayPoint(point)
398 }
399
400 pub fn folds_in_range<T>(&self, range: Range<T>) -> impl Iterator<Item = &Range<Anchor>>
401 where
402 T: ToOffset,
403 {
404 self.folds_snapshot.folds_in_range(range)
405 }
406
407 pub fn blocks_in_range(
408 &self,
409 rows: Range<u32>,
410 ) -> impl Iterator<Item = (u32, &TransformBlock)> {
411 self.blocks_snapshot.blocks_in_range(rows)
412 }
413
414 pub fn intersects_fold<T: ToOffset>(&self, offset: T) -> bool {
415 self.folds_snapshot.intersects_fold(offset)
416 }
417
418 pub fn is_line_folded(&self, display_row: u32) -> bool {
419 let block_point = BlockPoint(Point::new(display_row, 0));
420 let wrap_point = self.blocks_snapshot.to_wrap_point(block_point);
421 let tab_point = self.wraps_snapshot.to_tab_point(wrap_point);
422 self.folds_snapshot.is_line_folded(tab_point.row())
423 }
424
425 pub fn is_block_line(&self, display_row: u32) -> bool {
426 self.blocks_snapshot.is_block_line(display_row)
427 }
428
429 pub fn soft_wrap_indent(&self, display_row: u32) -> Option<u32> {
430 let wrap_row = self
431 .blocks_snapshot
432 .to_wrap_point(BlockPoint::new(display_row, 0))
433 .row();
434 self.wraps_snapshot.soft_wrap_indent(wrap_row)
435 }
436
437 pub fn text(&self) -> String {
438 self.text_chunks(0).collect()
439 }
440
441 pub fn line(&self, display_row: u32) -> String {
442 let mut result = String::new();
443 for chunk in self.text_chunks(display_row) {
444 if let Some(ix) = chunk.find('\n') {
445 result.push_str(&chunk[0..ix]);
446 break;
447 } else {
448 result.push_str(chunk);
449 }
450 }
451 result
452 }
453
454 pub fn line_indent(&self, display_row: u32) -> (u32, bool) {
455 let mut indent = 0;
456 let mut is_blank = true;
457 for c in self.chars_at(DisplayPoint::new(display_row, 0)) {
458 if c == ' ' {
459 indent += 1;
460 } else {
461 is_blank = c == '\n';
462 break;
463 }
464 }
465 (indent, is_blank)
466 }
467
468 pub fn line_len(&self, row: u32) -> u32 {
469 self.blocks_snapshot.line_len(row)
470 }
471
472 pub fn longest_row(&self) -> u32 {
473 self.blocks_snapshot.longest_row()
474 }
475
476 #[cfg(any(test, feature = "test-support"))]
477 pub fn highlight_ranges<Tag: ?Sized + 'static>(
478 &self,
479 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
480 let type_id = TypeId::of::<Tag>();
481 self.text_highlights.get(&Some(type_id)).cloned()
482 }
483}
484
485#[derive(Copy, Clone, Default, Eq, Ord, PartialOrd, PartialEq)]
486pub struct DisplayPoint(BlockPoint);
487
488impl Debug for DisplayPoint {
489 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
490 f.write_fmt(format_args!(
491 "DisplayPoint({}, {})",
492 self.row(),
493 self.column()
494 ))
495 }
496}
497
498impl DisplayPoint {
499 pub fn new(row: u32, column: u32) -> Self {
500 Self(BlockPoint(Point::new(row, column)))
501 }
502
503 pub fn zero() -> Self {
504 Self::new(0, 0)
505 }
506
507 pub fn is_zero(&self) -> bool {
508 self.0.is_zero()
509 }
510
511 pub fn row(self) -> u32 {
512 self.0.row
513 }
514
515 pub fn column(self) -> u32 {
516 self.0.column
517 }
518
519 pub fn row_mut(&mut self) -> &mut u32 {
520 &mut self.0.row
521 }
522
523 pub fn column_mut(&mut self) -> &mut u32 {
524 &mut self.0.column
525 }
526
527 pub fn to_point(self, map: &DisplaySnapshot) -> Point {
528 map.display_point_to_point(self, Bias::Left)
529 }
530
531 pub fn to_offset(self, map: &DisplaySnapshot, bias: Bias) -> usize {
532 let unblocked_point = map.blocks_snapshot.to_wrap_point(self.0);
533 let unwrapped_point = map.wraps_snapshot.to_tab_point(unblocked_point);
534 let unexpanded_point = map.tabs_snapshot.to_fold_point(unwrapped_point, bias).0;
535 unexpanded_point.to_buffer_offset(&map.folds_snapshot)
536 }
537}
538
539impl ToDisplayPoint for usize {
540 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
541 map.point_to_display_point(self.to_point(&map.buffer_snapshot), Bias::Left)
542 }
543}
544
545impl ToDisplayPoint for OffsetUtf16 {
546 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
547 self.to_offset(&map.buffer_snapshot).to_display_point(map)
548 }
549}
550
551impl ToDisplayPoint for Point {
552 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
553 map.point_to_display_point(*self, Bias::Left)
554 }
555}
556
557impl ToDisplayPoint for Anchor {
558 fn to_display_point(&self, map: &DisplaySnapshot) -> DisplayPoint {
559 self.to_point(&map.buffer_snapshot).to_display_point(map)
560 }
561}
562
563#[cfg(test)]
564pub mod tests {
565 use super::*;
566 use crate::{movement, test::marked_display_snapshot};
567 use gpui::{color::Color, elements::*, test::observe, MutableAppContext};
568 use language::{Buffer, Language, LanguageConfig, RandomCharIter, SelectionGoal};
569 use rand::{prelude::*, Rng};
570 use smol::stream::StreamExt;
571 use std::{env, sync::Arc};
572 use theme::SyntaxTheme;
573 use util::test::{marked_text_ranges, sample_text};
574 use Bias::*;
575
576 #[gpui::test(iterations = 100)]
577 async fn test_random_display_map(cx: &mut gpui::TestAppContext, mut rng: StdRng) {
578 cx.foreground().set_block_on_ticks(0..=50);
579 cx.foreground().forbid_parking();
580 let operations = env::var("OPERATIONS")
581 .map(|i| i.parse().expect("invalid `OPERATIONS` variable"))
582 .unwrap_or(10);
583
584 let font_cache = cx.font_cache().clone();
585 let mut tab_size = rng.gen_range(1..=4);
586 let buffer_start_excerpt_header_height = rng.gen_range(1..=5);
587 let excerpt_header_height = rng.gen_range(1..=5);
588 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
589 let font_id = font_cache
590 .select_font(family_id, &Default::default())
591 .unwrap();
592 let font_size = 14.0;
593 let max_wrap_width = 300.0;
594 let mut wrap_width = if rng.gen_bool(0.1) {
595 None
596 } else {
597 Some(rng.gen_range(0.0..=max_wrap_width))
598 };
599
600 log::info!("tab size: {}", tab_size);
601 log::info!("wrap width: {:?}", wrap_width);
602
603 cx.update(|cx| {
604 let mut settings = Settings::test(cx);
605 settings.editor_overrides.tab_size = NonZeroU32::new(tab_size);
606 cx.set_global(settings)
607 });
608
609 let buffer = cx.update(|cx| {
610 if rng.gen() {
611 let len = rng.gen_range(0..10);
612 let text = RandomCharIter::new(&mut rng).take(len).collect::<String>();
613 MultiBuffer::build_simple(&text, cx)
614 } else {
615 MultiBuffer::build_random(&mut rng, cx)
616 }
617 });
618
619 let map = cx.add_model(|cx| {
620 DisplayMap::new(
621 buffer.clone(),
622 font_id,
623 font_size,
624 wrap_width,
625 buffer_start_excerpt_header_height,
626 excerpt_header_height,
627 cx,
628 )
629 });
630 let mut notifications = observe(&map, cx);
631 let mut fold_count = 0;
632 let mut blocks = Vec::new();
633
634 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
635 log::info!("buffer text: {:?}", snapshot.buffer_snapshot.text());
636 log::info!("fold text: {:?}", snapshot.folds_snapshot.text());
637 log::info!("tab text: {:?}", snapshot.tabs_snapshot.text());
638 log::info!("wrap text: {:?}", snapshot.wraps_snapshot.text());
639 log::info!("block text: {:?}", snapshot.blocks_snapshot.text());
640 log::info!("display text: {:?}", snapshot.text());
641
642 for _i in 0..operations {
643 match rng.gen_range(0..100) {
644 0..=19 => {
645 wrap_width = if rng.gen_bool(0.2) {
646 None
647 } else {
648 Some(rng.gen_range(0.0..=max_wrap_width))
649 };
650 log::info!("setting wrap width to {:?}", wrap_width);
651 map.update(cx, |map, cx| map.set_wrap_width(wrap_width, cx));
652 }
653 20..=29 => {
654 let mut tab_sizes = vec![1, 2, 3, 4];
655 tab_sizes.remove((tab_size - 1) as usize);
656 tab_size = *tab_sizes.choose(&mut rng).unwrap();
657 log::info!("setting tab size to {:?}", tab_size);
658 cx.update(|cx| {
659 let mut settings = Settings::test(cx);
660 settings.editor_overrides.tab_size = NonZeroU32::new(tab_size);
661 cx.set_global(settings)
662 });
663 }
664 30..=44 => {
665 map.update(cx, |map, cx| {
666 if rng.gen() || blocks.is_empty() {
667 let buffer = map.snapshot(cx).buffer_snapshot;
668 let block_properties = (0..rng.gen_range(1..=1))
669 .map(|_| {
670 let position =
671 buffer.anchor_after(buffer.clip_offset(
672 rng.gen_range(0..=buffer.len()),
673 Bias::Left,
674 ));
675
676 let disposition = if rng.gen() {
677 BlockDisposition::Above
678 } else {
679 BlockDisposition::Below
680 };
681 let height = rng.gen_range(1..5);
682 log::info!(
683 "inserting block {:?} {:?} with height {}",
684 disposition,
685 position.to_point(&buffer),
686 height
687 );
688 BlockProperties {
689 style: BlockStyle::Fixed,
690 position,
691 height,
692 disposition,
693 render: Arc::new(|_| Empty::new().boxed()),
694 }
695 })
696 .collect::<Vec<_>>();
697 blocks.extend(map.insert_blocks(block_properties, cx));
698 } else {
699 blocks.shuffle(&mut rng);
700 let remove_count = rng.gen_range(1..=4.min(blocks.len()));
701 let block_ids_to_remove = (0..remove_count)
702 .map(|_| blocks.remove(rng.gen_range(0..blocks.len())))
703 .collect();
704 log::info!("removing block ids {:?}", block_ids_to_remove);
705 map.remove_blocks(block_ids_to_remove, cx);
706 }
707 });
708 }
709 45..=79 => {
710 let mut ranges = Vec::new();
711 for _ in 0..rng.gen_range(1..=3) {
712 buffer.read_with(cx, |buffer, cx| {
713 let buffer = buffer.read(cx);
714 let end = buffer.clip_offset(rng.gen_range(0..=buffer.len()), Right);
715 let start = buffer.clip_offset(rng.gen_range(0..=end), Left);
716 ranges.push(start..end);
717 });
718 }
719
720 if rng.gen() && fold_count > 0 {
721 log::info!("unfolding ranges: {:?}", ranges);
722 map.update(cx, |map, cx| {
723 map.unfold(ranges, true, cx);
724 });
725 } else {
726 log::info!("folding ranges: {:?}", ranges);
727 map.update(cx, |map, cx| {
728 map.fold(ranges, cx);
729 });
730 }
731 }
732 _ => {
733 buffer.update(cx, |buffer, cx| buffer.randomly_mutate(&mut rng, 5, cx));
734 }
735 }
736
737 if map.read_with(cx, |map, cx| map.is_rewrapping(cx)) {
738 notifications.next().await.unwrap();
739 }
740
741 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
742 fold_count = snapshot.fold_count();
743 log::info!("buffer text: {:?}", snapshot.buffer_snapshot.text());
744 log::info!("fold text: {:?}", snapshot.folds_snapshot.text());
745 log::info!("tab text: {:?}", snapshot.tabs_snapshot.text());
746 log::info!("wrap text: {:?}", snapshot.wraps_snapshot.text());
747 log::info!("block text: {:?}", snapshot.blocks_snapshot.text());
748 log::info!("display text: {:?}", snapshot.text());
749
750 // Line boundaries
751 let buffer = &snapshot.buffer_snapshot;
752 for _ in 0..5 {
753 let row = rng.gen_range(0..=buffer.max_point().row);
754 let column = rng.gen_range(0..=buffer.line_len(row));
755 let point = buffer.clip_point(Point::new(row, column), Left);
756
757 let (prev_buffer_bound, prev_display_bound) = snapshot.prev_line_boundary(point);
758 let (next_buffer_bound, next_display_bound) = snapshot.next_line_boundary(point);
759
760 assert!(prev_buffer_bound <= point);
761 assert!(next_buffer_bound >= point);
762 assert_eq!(prev_buffer_bound.column, 0);
763 assert_eq!(prev_display_bound.column(), 0);
764 if next_buffer_bound < buffer.max_point() {
765 assert_eq!(buffer.chars_at(next_buffer_bound).next(), Some('\n'));
766 }
767
768 assert_eq!(
769 prev_display_bound,
770 prev_buffer_bound.to_display_point(&snapshot),
771 "row boundary before {:?}. reported buffer row boundary: {:?}",
772 point,
773 prev_buffer_bound
774 );
775 assert_eq!(
776 next_display_bound,
777 next_buffer_bound.to_display_point(&snapshot),
778 "display row boundary after {:?}. reported buffer row boundary: {:?}",
779 point,
780 next_buffer_bound
781 );
782 assert_eq!(
783 prev_buffer_bound,
784 prev_display_bound.to_point(&snapshot),
785 "row boundary before {:?}. reported display row boundary: {:?}",
786 point,
787 prev_display_bound
788 );
789 assert_eq!(
790 next_buffer_bound,
791 next_display_bound.to_point(&snapshot),
792 "row boundary after {:?}. reported display row boundary: {:?}",
793 point,
794 next_display_bound
795 );
796 }
797
798 // Movement
799 let min_point = snapshot.clip_point(DisplayPoint::new(0, 0), Left);
800 let max_point = snapshot.clip_point(snapshot.max_point(), Right);
801 for _ in 0..5 {
802 let row = rng.gen_range(0..=snapshot.max_point().row());
803 let column = rng.gen_range(0..=snapshot.line_len(row));
804 let point = snapshot.clip_point(DisplayPoint::new(row, column), Left);
805
806 log::info!("Moving from point {:?}", point);
807
808 let moved_right = movement::right(&snapshot, point);
809 log::info!("Right {:?}", moved_right);
810 if point < max_point {
811 assert!(moved_right > point);
812 if point.column() == snapshot.line_len(point.row())
813 || snapshot.soft_wrap_indent(point.row()).is_some()
814 && point.column() == snapshot.line_len(point.row()) - 1
815 {
816 assert!(moved_right.row() > point.row());
817 }
818 } else {
819 assert_eq!(moved_right, point);
820 }
821
822 let moved_left = movement::left(&snapshot, point);
823 log::info!("Left {:?}", moved_left);
824 if point > min_point {
825 assert!(moved_left < point);
826 if point.column() == 0 {
827 assert!(moved_left.row() < point.row());
828 }
829 } else {
830 assert_eq!(moved_left, point);
831 }
832 }
833 }
834 }
835
836 #[gpui::test(retries = 5)]
837 fn test_soft_wraps(cx: &mut MutableAppContext) {
838 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
839 cx.foreground().forbid_parking();
840
841 let font_cache = cx.font_cache();
842
843 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
844 let font_id = font_cache
845 .select_font(family_id, &Default::default())
846 .unwrap();
847 let font_size = 12.0;
848 let wrap_width = Some(64.);
849 cx.set_global(Settings::test(cx));
850
851 let text = "one two three four five\nsix seven eight";
852 let buffer = MultiBuffer::build_simple(text, cx);
853 let map = cx.add_model(|cx| {
854 DisplayMap::new(buffer.clone(), font_id, font_size, wrap_width, 1, 1, cx)
855 });
856
857 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
858 assert_eq!(
859 snapshot.text_chunks(0).collect::<String>(),
860 "one two \nthree four \nfive\nsix seven \neight"
861 );
862 assert_eq!(
863 snapshot.clip_point(DisplayPoint::new(0, 8), Bias::Left),
864 DisplayPoint::new(0, 7)
865 );
866 assert_eq!(
867 snapshot.clip_point(DisplayPoint::new(0, 8), Bias::Right),
868 DisplayPoint::new(1, 0)
869 );
870 assert_eq!(
871 movement::right(&snapshot, DisplayPoint::new(0, 7)),
872 DisplayPoint::new(1, 0)
873 );
874 assert_eq!(
875 movement::left(&snapshot, DisplayPoint::new(1, 0)),
876 DisplayPoint::new(0, 7)
877 );
878 assert_eq!(
879 movement::up(
880 &snapshot,
881 DisplayPoint::new(1, 10),
882 SelectionGoal::None,
883 false
884 ),
885 (DisplayPoint::new(0, 7), SelectionGoal::Column(10))
886 );
887 assert_eq!(
888 movement::down(
889 &snapshot,
890 DisplayPoint::new(0, 7),
891 SelectionGoal::Column(10),
892 false
893 ),
894 (DisplayPoint::new(1, 10), SelectionGoal::Column(10))
895 );
896 assert_eq!(
897 movement::down(
898 &snapshot,
899 DisplayPoint::new(1, 10),
900 SelectionGoal::Column(10),
901 false
902 ),
903 (DisplayPoint::new(2, 4), SelectionGoal::Column(10))
904 );
905
906 let ix = snapshot.buffer_snapshot.text().find("seven").unwrap();
907 buffer.update(cx, |buffer, cx| {
908 buffer.edit([(ix..ix, "and ")], None, cx);
909 });
910
911 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
912 assert_eq!(
913 snapshot.text_chunks(1).collect::<String>(),
914 "three four \nfive\nsix and \nseven eight"
915 );
916
917 // Re-wrap on font size changes
918 map.update(cx, |map, cx| map.set_font(font_id, font_size + 3., cx));
919
920 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
921 assert_eq!(
922 snapshot.text_chunks(1).collect::<String>(),
923 "three \nfour five\nsix and \nseven \neight"
924 )
925 }
926
927 #[gpui::test]
928 fn test_text_chunks(cx: &mut gpui::MutableAppContext) {
929 cx.set_global(Settings::test(cx));
930 let text = sample_text(6, 6, 'a');
931 let buffer = MultiBuffer::build_simple(&text, cx);
932 let family_id = cx.font_cache().load_family(&["Helvetica"]).unwrap();
933 let font_id = cx
934 .font_cache()
935 .select_font(family_id, &Default::default())
936 .unwrap();
937 let font_size = 14.0;
938 let map =
939 cx.add_model(|cx| DisplayMap::new(buffer.clone(), font_id, font_size, None, 1, 1, cx));
940 buffer.update(cx, |buffer, cx| {
941 buffer.edit(
942 vec![
943 (Point::new(1, 0)..Point::new(1, 0), "\t"),
944 (Point::new(1, 1)..Point::new(1, 1), "\t"),
945 (Point::new(2, 1)..Point::new(2, 1), "\t"),
946 ],
947 None,
948 cx,
949 )
950 });
951
952 assert_eq!(
953 map.update(cx, |map, cx| map.snapshot(cx))
954 .text_chunks(1)
955 .collect::<String>()
956 .lines()
957 .next(),
958 Some(" b bbbbb")
959 );
960 assert_eq!(
961 map.update(cx, |map, cx| map.snapshot(cx))
962 .text_chunks(2)
963 .collect::<String>()
964 .lines()
965 .next(),
966 Some("c ccccc")
967 );
968 }
969
970 #[gpui::test]
971 async fn test_chunks(cx: &mut gpui::TestAppContext) {
972 use unindent::Unindent as _;
973
974 let text = r#"
975 fn outer() {}
976
977 mod module {
978 fn inner() {}
979 }"#
980 .unindent();
981
982 let theme = SyntaxTheme::new(vec![
983 ("mod.body".to_string(), Color::red().into()),
984 ("fn.name".to_string(), Color::blue().into()),
985 ]);
986 let language = Arc::new(
987 Language::new(
988 LanguageConfig {
989 name: "Test".into(),
990 path_suffixes: vec![".test".to_string()],
991 ..Default::default()
992 },
993 Some(tree_sitter_rust::language()),
994 )
995 .with_highlights_query(
996 r#"
997 (mod_item name: (identifier) body: _ @mod.body)
998 (function_item name: (identifier) @fn.name)
999 "#,
1000 )
1001 .unwrap(),
1002 );
1003 language.set_theme(&theme);
1004 cx.update(|cx| {
1005 let mut settings = Settings::test(cx);
1006 settings.editor_defaults.tab_size = Some(2.try_into().unwrap());
1007 cx.set_global(settings);
1008 });
1009
1010 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
1011 buffer.condition(cx, |buf, _| !buf.is_parsing()).await;
1012 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
1013
1014 let font_cache = cx.font_cache();
1015 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
1016 let font_id = font_cache
1017 .select_font(family_id, &Default::default())
1018 .unwrap();
1019 let font_size = 14.0;
1020
1021 let map = cx.add_model(|cx| DisplayMap::new(buffer, font_id, font_size, None, 1, 1, cx));
1022 assert_eq!(
1023 cx.update(|cx| syntax_chunks(0..5, &map, &theme, cx)),
1024 vec![
1025 ("fn ".to_string(), None),
1026 ("outer".to_string(), Some(Color::blue())),
1027 ("() {}\n\nmod module ".to_string(), None),
1028 ("{\n fn ".to_string(), Some(Color::red())),
1029 ("inner".to_string(), Some(Color::blue())),
1030 ("() {}\n}".to_string(), Some(Color::red())),
1031 ]
1032 );
1033 assert_eq!(
1034 cx.update(|cx| syntax_chunks(3..5, &map, &theme, cx)),
1035 vec![
1036 (" fn ".to_string(), Some(Color::red())),
1037 ("inner".to_string(), Some(Color::blue())),
1038 ("() {}\n}".to_string(), Some(Color::red())),
1039 ]
1040 );
1041
1042 map.update(cx, |map, cx| {
1043 map.fold(vec![Point::new(0, 6)..Point::new(3, 2)], cx)
1044 });
1045 assert_eq!(
1046 cx.update(|cx| syntax_chunks(0..2, &map, &theme, cx)),
1047 vec![
1048 ("fn ".to_string(), None),
1049 ("out".to_string(), Some(Color::blue())),
1050 ("ā¦".to_string(), None),
1051 (" fn ".to_string(), Some(Color::red())),
1052 ("inner".to_string(), Some(Color::blue())),
1053 ("() {}\n}".to_string(), Some(Color::red())),
1054 ]
1055 );
1056 }
1057
1058 #[gpui::test]
1059 async fn test_chunks_with_soft_wrapping(cx: &mut gpui::TestAppContext) {
1060 use unindent::Unindent as _;
1061
1062 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
1063
1064 let text = r#"
1065 fn outer() {}
1066
1067 mod module {
1068 fn inner() {}
1069 }"#
1070 .unindent();
1071
1072 let theme = SyntaxTheme::new(vec![
1073 ("mod.body".to_string(), Color::red().into()),
1074 ("fn.name".to_string(), Color::blue().into()),
1075 ]);
1076 let language = Arc::new(
1077 Language::new(
1078 LanguageConfig {
1079 name: "Test".into(),
1080 path_suffixes: vec![".test".to_string()],
1081 ..Default::default()
1082 },
1083 Some(tree_sitter_rust::language()),
1084 )
1085 .with_highlights_query(
1086 r#"
1087 (mod_item name: (identifier) body: _ @mod.body)
1088 (function_item name: (identifier) @fn.name)
1089 "#,
1090 )
1091 .unwrap(),
1092 );
1093 language.set_theme(&theme);
1094
1095 cx.update(|cx| cx.set_global(Settings::test(cx)));
1096
1097 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
1098 buffer.condition(cx, |buf, _| !buf.is_parsing()).await;
1099 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
1100
1101 let font_cache = cx.font_cache();
1102
1103 let family_id = font_cache.load_family(&["Courier"]).unwrap();
1104 let font_id = font_cache
1105 .select_font(family_id, &Default::default())
1106 .unwrap();
1107 let font_size = 16.0;
1108
1109 let map =
1110 cx.add_model(|cx| DisplayMap::new(buffer, font_id, font_size, Some(40.0), 1, 1, cx));
1111 assert_eq!(
1112 cx.update(|cx| syntax_chunks(0..5, &map, &theme, cx)),
1113 [
1114 ("fn \n".to_string(), None),
1115 ("oute\nr".to_string(), Some(Color::blue())),
1116 ("() \n{}\n\n".to_string(), None),
1117 ]
1118 );
1119 assert_eq!(
1120 cx.update(|cx| syntax_chunks(3..5, &map, &theme, cx)),
1121 [("{}\n\n".to_string(), None)]
1122 );
1123
1124 map.update(cx, |map, cx| {
1125 map.fold(vec![Point::new(0, 6)..Point::new(3, 2)], cx)
1126 });
1127 assert_eq!(
1128 cx.update(|cx| syntax_chunks(1..4, &map, &theme, cx)),
1129 [
1130 ("out".to_string(), Some(Color::blue())),
1131 ("ā¦\n".to_string(), None),
1132 (" \nfn ".to_string(), Some(Color::red())),
1133 ("i\n".to_string(), Some(Color::blue()))
1134 ]
1135 );
1136 }
1137
1138 #[gpui::test]
1139 async fn test_chunks_with_text_highlights(cx: &mut gpui::TestAppContext) {
1140 cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
1141
1142 cx.update(|cx| cx.set_global(Settings::test(cx)));
1143 let theme = SyntaxTheme::new(vec![
1144 ("operator".to_string(), Color::red().into()),
1145 ("string".to_string(), Color::green().into()),
1146 ]);
1147 let language = Arc::new(
1148 Language::new(
1149 LanguageConfig {
1150 name: "Test".into(),
1151 path_suffixes: vec![".test".to_string()],
1152 ..Default::default()
1153 },
1154 Some(tree_sitter_rust::language()),
1155 )
1156 .with_highlights_query(
1157 r#"
1158 ":" @operator
1159 (string_literal) @string
1160 "#,
1161 )
1162 .unwrap(),
1163 );
1164 language.set_theme(&theme);
1165
1166 let (text, highlighted_ranges) = marked_text_ranges(r#"constĖ Ā«aĀ»: B = "c Ā«dĀ»""#, false);
1167
1168 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
1169 buffer.condition(cx, |buf, _| !buf.is_parsing()).await;
1170
1171 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
1172 let buffer_snapshot = buffer.read_with(cx, |buffer, cx| buffer.snapshot(cx));
1173
1174 let font_cache = cx.font_cache();
1175 let family_id = font_cache.load_family(&["Courier"]).unwrap();
1176 let font_id = font_cache
1177 .select_font(family_id, &Default::default())
1178 .unwrap();
1179 let font_size = 16.0;
1180 let map = cx.add_model(|cx| DisplayMap::new(buffer, font_id, font_size, None, 1, 1, cx));
1181
1182 enum MyType {}
1183
1184 let style = HighlightStyle {
1185 color: Some(Color::blue()),
1186 ..Default::default()
1187 };
1188
1189 map.update(cx, |map, _cx| {
1190 map.highlight_text(
1191 TypeId::of::<MyType>(),
1192 highlighted_ranges
1193 .into_iter()
1194 .map(|range| {
1195 buffer_snapshot.anchor_before(range.start)
1196 ..buffer_snapshot.anchor_before(range.end)
1197 })
1198 .collect(),
1199 style,
1200 );
1201 });
1202
1203 assert_eq!(
1204 cx.update(|cx| chunks(0..10, &map, &theme, cx)),
1205 [
1206 ("const ".to_string(), None, None),
1207 ("a".to_string(), None, Some(Color::blue())),
1208 (":".to_string(), Some(Color::red()), None),
1209 (" B = ".to_string(), None, None),
1210 ("\"c ".to_string(), Some(Color::green()), None),
1211 ("d".to_string(), Some(Color::green()), Some(Color::blue())),
1212 ("\"".to_string(), Some(Color::green()), None),
1213 ]
1214 );
1215 }
1216
1217 #[gpui::test]
1218 fn test_clip_point(cx: &mut gpui::MutableAppContext) {
1219 cx.set_global(Settings::test(cx));
1220 fn assert(text: &str, shift_right: bool, bias: Bias, cx: &mut gpui::MutableAppContext) {
1221 let (unmarked_snapshot, mut markers) = marked_display_snapshot(text, cx);
1222
1223 match bias {
1224 Bias::Left => {
1225 if shift_right {
1226 *markers[1].column_mut() += 1;
1227 }
1228
1229 assert_eq!(unmarked_snapshot.clip_point(markers[1], bias), markers[0])
1230 }
1231 Bias::Right => {
1232 if shift_right {
1233 *markers[0].column_mut() += 1;
1234 }
1235
1236 assert_eq!(unmarked_snapshot.clip_point(markers[0], bias), markers[1])
1237 }
1238 };
1239 }
1240
1241 use Bias::{Left, Right};
1242 assert("ĖĖĪ±", false, Left, cx);
1243 assert("ĖĖĪ±", true, Left, cx);
1244 assert("ĖĖĪ±", false, Right, cx);
1245 assert("ĖĪ±Ė", true, Right, cx);
1246 assert("ĖĖā", false, Left, cx);
1247 assert("ĖĖā", true, Left, cx);
1248 assert("ĖĖā", false, Right, cx);
1249 assert("ĖāĖ", true, Right, cx);
1250 assert("ĖĖš", false, Left, cx);
1251 assert("ĖĖš", true, Left, cx);
1252 assert("ĖĖš", false, Right, cx);
1253 assert("ĖšĖ", true, Right, cx);
1254 assert("ĖĖ\t", false, Left, cx);
1255 assert("ĖĖ\t", true, Left, cx);
1256 assert("ĖĖ\t", false, Right, cx);
1257 assert("Ė\tĖ", true, Right, cx);
1258 assert(" ĖĖ\t", false, Left, cx);
1259 assert(" ĖĖ\t", true, Left, cx);
1260 assert(" ĖĖ\t", false, Right, cx);
1261 assert(" Ė\tĖ", true, Right, cx);
1262 assert(" ĖĖ\t", false, Left, cx);
1263 assert(" ĖĖ\t", false, Right, cx);
1264 }
1265
1266 #[gpui::test]
1267 fn test_clip_at_line_ends(cx: &mut gpui::MutableAppContext) {
1268 cx.set_global(Settings::test(cx));
1269
1270 fn assert(text: &str, cx: &mut gpui::MutableAppContext) {
1271 let (mut unmarked_snapshot, markers) = marked_display_snapshot(text, cx);
1272 unmarked_snapshot.clip_at_line_ends = true;
1273 assert_eq!(
1274 unmarked_snapshot.clip_point(markers[1], Bias::Left),
1275 markers[0]
1276 );
1277 }
1278
1279 assert("ĖĖ", cx);
1280 assert("ĖaĖ", cx);
1281 assert("aĖbĖ", cx);
1282 assert("aĖĪ±Ė", cx);
1283 }
1284
1285 #[gpui::test]
1286 fn test_tabs_with_multibyte_chars(cx: &mut gpui::MutableAppContext) {
1287 cx.set_global(Settings::test(cx));
1288 let text = "ā
\t\tĪ±\nĪ²\t\nšĪ²\t\tĪ³";
1289 let buffer = MultiBuffer::build_simple(text, cx);
1290 let font_cache = cx.font_cache();
1291 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
1292 let font_id = font_cache
1293 .select_font(family_id, &Default::default())
1294 .unwrap();
1295 let font_size = 14.0;
1296
1297 let map =
1298 cx.add_model(|cx| DisplayMap::new(buffer.clone(), font_id, font_size, None, 1, 1, cx));
1299 let map = map.update(cx, |map, cx| map.snapshot(cx));
1300 assert_eq!(map.text(), "ā
Ī±\nĪ² \nšĪ² Ī³");
1301 assert_eq!(
1302 map.text_chunks(0).collect::<String>(),
1303 "ā
Ī±\nĪ² \nšĪ² Ī³"
1304 );
1305 assert_eq!(map.text_chunks(1).collect::<String>(), "Ī² \nšĪ² Ī³");
1306 assert_eq!(map.text_chunks(2).collect::<String>(), "šĪ² Ī³");
1307
1308 let point = Point::new(0, "ā
\t\t".len() as u32);
1309 let display_point = DisplayPoint::new(0, "ā
".len() as u32);
1310 assert_eq!(point.to_display_point(&map), display_point);
1311 assert_eq!(display_point.to_point(&map), point);
1312
1313 let point = Point::new(1, "Ī²\t".len() as u32);
1314 let display_point = DisplayPoint::new(1, "Ī² ".len() as u32);
1315 assert_eq!(point.to_display_point(&map), display_point);
1316 assert_eq!(display_point.to_point(&map), point,);
1317
1318 let point = Point::new(2, "šĪ²\t\t".len() as u32);
1319 let display_point = DisplayPoint::new(2, "šĪ² ".len() as u32);
1320 assert_eq!(point.to_display_point(&map), display_point);
1321 assert_eq!(display_point.to_point(&map), point,);
1322
1323 // Display points inside of expanded tabs
1324 assert_eq!(
1325 DisplayPoint::new(0, "ā
".len() as u32).to_point(&map),
1326 Point::new(0, "ā
\t".len() as u32),
1327 );
1328 assert_eq!(
1329 DisplayPoint::new(0, "ā
".len() as u32).to_point(&map),
1330 Point::new(0, "ā
".len() as u32),
1331 );
1332
1333 // Clipping display points inside of multi-byte characters
1334 assert_eq!(
1335 map.clip_point(DisplayPoint::new(0, "ā
".len() as u32 - 1), Left),
1336 DisplayPoint::new(0, 0)
1337 );
1338 assert_eq!(
1339 map.clip_point(DisplayPoint::new(0, "ā
".len() as u32 - 1), Bias::Right),
1340 DisplayPoint::new(0, "ā
".len() as u32)
1341 );
1342 }
1343
1344 #[gpui::test]
1345 fn test_max_point(cx: &mut gpui::MutableAppContext) {
1346 cx.set_global(Settings::test(cx));
1347 let buffer = MultiBuffer::build_simple("aaa\n\t\tbbb", cx);
1348 let font_cache = cx.font_cache();
1349 let family_id = font_cache.load_family(&["Helvetica"]).unwrap();
1350 let font_id = font_cache
1351 .select_font(family_id, &Default::default())
1352 .unwrap();
1353 let font_size = 14.0;
1354 let map =
1355 cx.add_model(|cx| DisplayMap::new(buffer.clone(), font_id, font_size, None, 1, 1, cx));
1356 assert_eq!(
1357 map.update(cx, |map, cx| map.snapshot(cx)).max_point(),
1358 DisplayPoint::new(1, 11)
1359 )
1360 }
1361
1362 fn syntax_chunks<'a>(
1363 rows: Range<u32>,
1364 map: &ModelHandle<DisplayMap>,
1365 theme: &'a SyntaxTheme,
1366 cx: &mut MutableAppContext,
1367 ) -> Vec<(String, Option<Color>)> {
1368 chunks(rows, map, theme, cx)
1369 .into_iter()
1370 .map(|(text, color, _)| (text, color))
1371 .collect()
1372 }
1373
1374 fn chunks<'a>(
1375 rows: Range<u32>,
1376 map: &ModelHandle<DisplayMap>,
1377 theme: &'a SyntaxTheme,
1378 cx: &mut MutableAppContext,
1379 ) -> Vec<(String, Option<Color>, Option<Color>)> {
1380 let snapshot = map.update(cx, |map, cx| map.snapshot(cx));
1381 let mut chunks: Vec<(String, Option<Color>, Option<Color>)> = Vec::new();
1382 for chunk in snapshot.chunks(rows, true) {
1383 let syntax_color = chunk
1384 .syntax_highlight_id
1385 .and_then(|id| id.style(theme)?.color);
1386 let highlight_color = chunk.highlight_style.and_then(|style| style.color);
1387 if let Some((last_chunk, last_syntax_color, last_highlight_color)) = chunks.last_mut() {
1388 if syntax_color == *last_syntax_color && highlight_color == *last_highlight_color {
1389 last_chunk.push_str(chunk.text);
1390 continue;
1391 }
1392 }
1393 chunks.push((chunk.text.to_string(), syntax_color, highlight_color));
1394 }
1395 chunks
1396 }
1397}