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canvas_unittests.cc
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1// Copyright 2013 The Flutter Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "flutter/testing/testing.h"
6#include "impeller/aiks/canvas.h"
7#include "impeller/aiks/image_filter.h"
8#include "impeller/geometry/path_builder.h"
9
10// TODO(zanderso): https://github.com/flutter/flutter/issues/127701
11// NOLINTBEGIN(bugprone-unchecked-optional-access)
12
13namespace impeller {
14namespace testing {
15
16using AiksCanvasTest = ::testing::Test;
17
18TEST(AiksCanvasTest, EmptyCullRect) {
19 Canvas canvas;
20
21 ASSERT_FALSE(canvas.GetCurrentLocalCullingBounds().has_value());
22}
23
24TEST(AiksCanvasTest, InitialCullRect) {
25 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
26
27 Canvas canvas(initial_cull);
28
29 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
30 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), initial_cull);
31}
32
33TEST(AiksCanvasTest, TranslatedCullRect) {
34 Rect initial_cull = Rect::MakeXYWH(5, 5, 10, 10);
35 Rect translated_cull = Rect::MakeXYWH(0, 0, 10, 10);
36
37 Canvas canvas(initial_cull);
38 canvas.Translate(Vector3(5, 5, 0));
39
40 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
41 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), translated_cull);
42}
43
44TEST(AiksCanvasTest, ScaledCullRect) {
45 Rect initial_cull = Rect::MakeXYWH(5, 5, 10, 10);
46 Rect scaled_cull = Rect::MakeXYWH(10, 10, 20, 20);
47
48 Canvas canvas(initial_cull);
49 canvas.Scale(Vector2(0.5, 0.5));
50
51 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
52 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), scaled_cull);
53}
54
55TEST(AiksCanvasTest, RectClipIntersectAgainstEmptyCullRect) {
56 Rect rect_clip = Rect::MakeXYWH(5, 5, 10, 10);
57
58 Canvas canvas;
59 canvas.ClipRect(rect_clip, Entity::ClipOperation::kIntersect);
60
61 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
62 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), rect_clip);
63}
64
65TEST(AiksCanvasTest, RectClipDiffAgainstEmptyCullRect) {
66 Rect rect_clip = Rect::MakeXYWH(5, 5, 10, 10);
67
68 Canvas canvas;
69 canvas.ClipRect(rect_clip, Entity::ClipOperation::kDifference);
70
71 ASSERT_FALSE(canvas.GetCurrentLocalCullingBounds().has_value());
72}
73
74TEST(AiksCanvasTest, RectClipIntersectAgainstCullRect) {
75 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
76 Rect rect_clip = Rect::MakeXYWH(5, 5, 10, 10);
77 Rect result_cull = Rect::MakeXYWH(5, 5, 5, 5);
78
79 Canvas canvas(initial_cull);
80 canvas.ClipRect(rect_clip, Entity::ClipOperation::kIntersect);
81
82 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
83 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
84}
85
86TEST(AiksCanvasTest, RectClipDiffAgainstNonCoveredCullRect) {
87 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
88 Rect rect_clip = Rect::MakeXYWH(5, 5, 10, 10);
89 Rect result_cull = Rect::MakeXYWH(0, 0, 10, 10);
90
91 Canvas canvas(initial_cull);
92 canvas.ClipRect(rect_clip, Entity::ClipOperation::kDifference);
93
94 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
95 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
96}
97
98TEST(AiksCanvasTest, RectClipDiffAboveCullRect) {
99 Rect initial_cull = Rect::MakeXYWH(5, 5, 10, 10);
100 Rect rect_clip = Rect::MakeXYWH(0, 0, 20, 4);
101 Rect result_cull = Rect::MakeXYWH(5, 5, 10, 10);
102
103 Canvas canvas(initial_cull);
104 canvas.ClipRect(rect_clip, Entity::ClipOperation::kDifference);
105
106 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
107 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
108}
109
110TEST(AiksCanvasTest, RectClipDiffBelowCullRect) {
111 Rect initial_cull = Rect::MakeXYWH(5, 5, 10, 10);
112 Rect rect_clip = Rect::MakeXYWH(0, 16, 20, 4);
113 Rect result_cull = Rect::MakeXYWH(5, 5, 10, 10);
114
115 Canvas canvas(initial_cull);
116 canvas.ClipRect(rect_clip, Entity::ClipOperation::kDifference);
117
118 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
119 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
120}
121
122TEST(AiksCanvasTest, RectClipDiffLeftOfCullRect) {
123 Rect initial_cull = Rect::MakeXYWH(5, 5, 10, 10);
124 Rect rect_clip = Rect::MakeXYWH(0, 0, 4, 20);
125 Rect result_cull = Rect::MakeXYWH(5, 5, 10, 10);
126
127 Canvas canvas(initial_cull);
128 canvas.ClipRect(rect_clip, Entity::ClipOperation::kDifference);
129
130 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
131 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
132}
133
134TEST(AiksCanvasTest, RectClipDiffRightOfCullRect) {
135 Rect initial_cull = Rect::MakeXYWH(5, 5, 10, 10);
136 Rect rect_clip = Rect::MakeXYWH(16, 0, 4, 20);
137 Rect result_cull = Rect::MakeXYWH(5, 5, 10, 10);
138
139 Canvas canvas(initial_cull);
140 canvas.ClipRect(rect_clip, Entity::ClipOperation::kDifference);
141
142 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
143 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
144}
145
146TEST(AiksCanvasTest, RectClipDiffAgainstVCoveredCullRect) {
147 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
148 Rect rect_clip = Rect::MakeXYWH(5, 0, 10, 10);
149 Rect result_cull = Rect::MakeXYWH(0, 0, 5, 10);
150
151 Canvas canvas(initial_cull);
152 canvas.ClipRect(rect_clip, Entity::ClipOperation::kDifference);
153
154 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
155 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
156}
157
158TEST(AiksCanvasTest, RectClipDiffAgainstHCoveredCullRect) {
159 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
160 Rect rect_clip = Rect::MakeXYWH(0, 5, 10, 10);
161 Rect result_cull = Rect::MakeXYWH(0, 0, 10, 5);
162
163 Canvas canvas(initial_cull);
164 canvas.ClipRect(rect_clip, Entity::ClipOperation::kDifference);
165
166 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
167 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
168}
169
170TEST(AiksCanvasTest, RRectClipIntersectAgainstEmptyCullRect) {
171 Rect rect_clip = Rect::MakeXYWH(5, 5, 10, 10);
172
173 Canvas canvas;
174 canvas.ClipRRect(rect_clip, {1, 1}, Entity::ClipOperation::kIntersect);
175
176 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
177 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), rect_clip);
178}
179
180TEST(AiksCanvasTest, RRectClipDiffAgainstEmptyCullRect) {
181 Rect rect_clip = Rect::MakeXYWH(5, 5, 10, 10);
182
183 Canvas canvas;
184 canvas.ClipRRect(rect_clip, {1, 1}, Entity::ClipOperation::kDifference);
185
186 ASSERT_FALSE(canvas.GetCurrentLocalCullingBounds().has_value());
187}
188
189TEST(AiksCanvasTest, RRectClipIntersectAgainstCullRect) {
190 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
191 Rect rect_clip = Rect::MakeXYWH(5, 5, 10, 10);
192 Rect result_cull = Rect::MakeXYWH(5, 5, 5, 5);
193
194 Canvas canvas(initial_cull);
195 canvas.ClipRRect(rect_clip, {1, 1}, Entity::ClipOperation::kIntersect);
196
197 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
198 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
199}
200
201TEST(AiksCanvasTest, RRectClipDiffAgainstNonCoveredCullRect) {
202 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
203 Rect rect_clip = Rect::MakeXYWH(5, 5, 10, 10);
204 Rect result_cull = Rect::MakeXYWH(0, 0, 10, 10);
205
206 Canvas canvas(initial_cull);
207 canvas.ClipRRect(rect_clip, {1, 1}, Entity::ClipOperation::kDifference);
208
209 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
210 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
211}
212
213TEST(AiksCanvasTest, RRectClipDiffAgainstVPartiallyCoveredCullRect) {
214 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
215 Rect rect_clip = Rect::MakeXYWH(5, 0, 10, 10);
216 Rect result_cull = Rect::MakeXYWH(0, 0, 6, 10);
217
218 Canvas canvas(initial_cull);
219 canvas.ClipRRect(rect_clip, {1, 1}, Entity::ClipOperation::kDifference);
220
221 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
222 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
223}
224
225TEST(AiksCanvasTest, RRectClipDiffAgainstVFullyCoveredCullRect) {
226 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
227 Rect rect_clip = Rect::MakeXYWH(5, -2, 10, 14);
228 Rect result_cull = Rect::MakeXYWH(0, 0, 5, 10);
229
230 Canvas canvas(initial_cull);
231 canvas.ClipRRect(rect_clip, {1, 1}, Entity::ClipOperation::kDifference);
232
233 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
234 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
235}
236
237TEST(AiksCanvasTest, RRectClipDiffAgainstHPartiallyCoveredCullRect) {
238 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
239 Rect rect_clip = Rect::MakeXYWH(0, 5, 10, 10);
240 Rect result_cull = Rect::MakeXYWH(0, 0, 10, 6);
241
242 Canvas canvas(initial_cull);
243 canvas.ClipRRect(rect_clip, {1, 1}, Entity::ClipOperation::kDifference);
244
245 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
246 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
247}
248
249TEST(AiksCanvasTest, RRectClipDiffAgainstHFullyCoveredCullRect) {
250 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
251 Rect rect_clip = Rect::MakeXYWH(-2, 5, 14, 10);
252 Rect result_cull = Rect::MakeXYWH(0, 0, 10, 5);
253
254 Canvas canvas(initial_cull);
255 canvas.ClipRRect(rect_clip, {1, 1}, Entity::ClipOperation::kDifference);
256
257 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
258 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
259}
260
261TEST(AiksCanvasTest, PathClipIntersectAgainstEmptyCullRect) {
262 PathBuilder builder;
263 builder.AddRect(Rect::MakeXYWH(5, 5, 1, 1));
264 builder.AddRect(Rect::MakeXYWH(5, 14, 1, 1));
265 builder.AddRect(Rect::MakeXYWH(14, 5, 1, 1));
266 builder.AddRect(Rect::MakeXYWH(14, 14, 1, 1));
267 Path path = builder.TakePath();
268 Rect rect_clip = Rect::MakeXYWH(5, 5, 10, 10);
269
270 Canvas canvas;
271 canvas.ClipPath(path, Entity::ClipOperation::kIntersect);
272
273 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
274 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), rect_clip);
275}
276
277TEST(AiksCanvasTest, PathClipDiffAgainstEmptyCullRect) {
278 PathBuilder builder;
279 builder.AddRect(Rect::MakeXYWH(5, 5, 1, 1));
280 builder.AddRect(Rect::MakeXYWH(5, 14, 1, 1));
281 builder.AddRect(Rect::MakeXYWH(14, 5, 1, 1));
282 builder.AddRect(Rect::MakeXYWH(14, 14, 1, 1));
283 Path path = builder.TakePath();
284
285 Canvas canvas;
286 canvas.ClipPath(path, Entity::ClipOperation::kDifference);
287
288 ASSERT_FALSE(canvas.GetCurrentLocalCullingBounds().has_value());
289}
290
291TEST(AiksCanvasTest, PathClipIntersectAgainstCullRect) {
292 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
293 PathBuilder builder;
294 builder.AddRect(Rect::MakeXYWH(5, 5, 1, 1));
295 builder.AddRect(Rect::MakeXYWH(5, 14, 1, 1));
296 builder.AddRect(Rect::MakeXYWH(14, 5, 1, 1));
297 builder.AddRect(Rect::MakeXYWH(14, 14, 1, 1));
298 Path path = builder.TakePath();
299 Rect result_cull = Rect::MakeXYWH(5, 5, 5, 5);
300
301 Canvas canvas(initial_cull);
302 canvas.ClipPath(path, Entity::ClipOperation::kIntersect);
303
304 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
305 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
306}
307
308TEST(AiksCanvasTest, PathClipDiffAgainstNonCoveredCullRect) {
309 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
310 PathBuilder builder;
311 builder.AddRect(Rect::MakeXYWH(5, 5, 1, 1));
312 builder.AddRect(Rect::MakeXYWH(5, 14, 1, 1));
313 builder.AddRect(Rect::MakeXYWH(14, 5, 1, 1));
314 builder.AddRect(Rect::MakeXYWH(14, 14, 1, 1));
315 Path path = builder.TakePath();
316 Rect result_cull = Rect::MakeXYWH(0, 0, 10, 10);
317
318 Canvas canvas(initial_cull);
319 canvas.ClipPath(path, Entity::ClipOperation::kDifference);
320
321 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
322 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
323}
324
325TEST(AiksCanvasTest, PathClipDiffAgainstFullyCoveredCullRect) {
326 Rect initial_cull = Rect::MakeXYWH(5, 5, 10, 10);
327 PathBuilder builder;
328 builder.AddRect(Rect::MakeXYWH(0, 0, 100, 100));
329 Path path = builder.TakePath();
330 // Diff clip of Paths is ignored due to complexity
331 Rect result_cull = Rect::MakeXYWH(5, 5, 10, 10);
332
333 Canvas canvas(initial_cull);
334 canvas.ClipPath(path, Entity::ClipOperation::kDifference);
335
336 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
337 ASSERT_EQ(canvas.GetCurrentLocalCullingBounds().value(), result_cull);
338}
339
340TEST(AiksCanvasTest, DisableLocalBoundsRectForFilteredSaveLayers) {
341 Rect initial_cull = Rect::MakeXYWH(0, 0, 10, 10);
342
343 Canvas canvas(initial_cull);
344 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
345
346 canvas.Save();
347 canvas.SaveLayer(
348 Paint{.image_filter = ImageFilter::MakeBlur(
349 Sigma(10), Sigma(10), FilterContents::BlurStyle::kNormal,
350 Entity::TileMode::kDecal)});
351 ASSERT_FALSE(canvas.GetCurrentLocalCullingBounds().has_value());
352
353 canvas.Restore();
354 ASSERT_TRUE(canvas.GetCurrentLocalCullingBounds().has_value());
355}
356
357} // namespace testing
358} // namespace impeller
359
360// NOLINTEND(bugprone-unchecked-optional-access)
impeller::FilterContents::BlurStyle::kNormal
@ kNormal
Blurred inside and outside.
impeller::ImageFilter::MakeBlur
static std::shared_ptr< ImageFilter > MakeBlur(Sigma sigma_x, Sigma sigma_y, FilterContents::BlurStyle blur_style, Entity::TileMode tile_mode)
Definition: image_filter.cc:20
image_filter.h
flutter::path
DEF_SWITCHES_START aot vmservice shared library Name of the *so containing AOT compiled Dart assets for launching the service isolate vm snapshot The VM snapshot data that will be memory mapped as read only SnapshotAssetPath must be present isolate snapshot The isolate snapshot data that will be memory mapped as read only SnapshotAssetPath must be present cache dir path
Definition: switches.h:57
impeller::testing::TEST
TEST(AiksCanvasTest, EmptyCullRect)
Definition: canvas_unittests.cc:18
impeller::testing::AiksCanvasTest
::testing::Test AiksCanvasTest
Definition: canvas_unittests.cc:16
impeller::Vector2
Point Vector2
Definition: point.h:326
path_builder.h
impeller::Sigma
In filters that use Gaussian distributions, "sigma" is a size of one standard deviation in terms of t...
Definition: sigma.h:32
impeller::TRect< Scalar >::MakeXYWH
static constexpr TRect MakeXYWH(Type x, Type y, Type width, Type height)
Definition: rect.h:136
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