1 /*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "include/core/SkBitmap.h"
9 #include "include/core/SkBlendMode.h"
10 #include "include/core/SkCanvas.h"
11 #include "include/core/SkColor.h"
12 #include "include/core/SkImage.h"
13 #include "include/core/SkMatrix.h"
14 #include "include/core/SkPaint.h"
15 #include "include/core/SkPoint.h"
16 #include "include/core/SkRRect.h"
17 #include "include/core/SkRefCnt.h"
18 #include "include/core/SkSamplingOptions.h"
19 #include "include/core/SkShader.h"
20 #include "include/core/SkTileMode.h"
21 #include "include/effects/SkPerlinNoiseShader.h"
22 #include "tests/Test.h"
23
check_isaimage(skiatest::Reporter * reporter,SkShader * shader,int expectedW,int expectedH,SkTileMode expectedX,SkTileMode expectedY,const SkMatrix & expectedM)24 static void check_isaimage(skiatest::Reporter* reporter, SkShader* shader,
25 int expectedW, int expectedH,
26 SkTileMode expectedX, SkTileMode expectedY,
27 const SkMatrix& expectedM) {
28 SkTileMode tileModes[2];
29 SkMatrix localM;
30
31 // wack these so we don't get a false positive
32 localM.setScale(9999, -9999);
33 tileModes[0] = tileModes[1] = (SkTileMode)99;
34
35 SkImage* image = shader->isAImage(&localM, tileModes);
36 REPORTER_ASSERT(reporter, image);
37 REPORTER_ASSERT(reporter, image->width() == expectedW);
38 REPORTER_ASSERT(reporter, image->height() == expectedH);
39 REPORTER_ASSERT(reporter, localM == expectedM);
40 REPORTER_ASSERT(reporter, tileModes[0] == expectedX);
41 REPORTER_ASSERT(reporter, tileModes[1] == expectedY);
42 }
43
DEF_TEST(Shader_isAImage,reporter)44 DEF_TEST(Shader_isAImage, reporter) {
45 const int W = 100;
46 const int H = 100;
47 SkBitmap bm;
48 bm.allocN32Pixels(W, H);
49 auto img = bm.asImage();
50 const SkMatrix localM = SkMatrix::Scale(2, 3);
51 const SkTileMode tmx = SkTileMode::kRepeat;
52 const SkTileMode tmy = SkTileMode::kMirror;
53
54 auto shader0 = bm.makeShader(tmx, tmy, SkSamplingOptions(), localM);
55 auto shader1 = bm.asImage()->makeShader(tmx, tmy, SkSamplingOptions(), localM);
56
57 check_isaimage(reporter, shader0.get(), W, H, tmx, tmy, localM);
58 check_isaimage(reporter, shader1.get(), W, H, tmx, tmy, localM);
59 }
60
61 // Make sure things are ok with just a single leg.
DEF_TEST(ComposeShaderSingle,reporter)62 DEF_TEST(ComposeShaderSingle, reporter) {
63 SkBitmap srcBitmap;
64 srcBitmap.allocN32Pixels(10, 10);
65 srcBitmap.eraseColor(SK_ColorRED);
66 SkCanvas canvas(srcBitmap);
67 SkPaint p;
68 p.setShader(
69 SkShaders::Blend(SkBlendMode::kClear,
70 SkShaders::Empty(),
71 SkPerlinNoiseShader::MakeFractalNoise(1.0f, 1.0f, 2, 0.0f)));
72 SkRRect rr;
73 SkVector rd[] = {{0, 0}, {0, 0}, {0, 0}, {0, 0}};
74 rr.setRectRadii({0, 0, 0, 0}, rd);
75 canvas.drawRRect(rr, p);
76 }
77