1 /*
2 * Copyright 2015 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 "SkImageSource.h"
9 #include "SkSurface.h"
10 #include "SkTileImageFilter.h"
11 #include "gm.h"
12
create_circle_texture(int size,SkColor color)13 static SkImage* create_circle_texture(int size, SkColor color) {
14 SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterN32Premul(size, size));
15 SkCanvas* canvas = surface->getCanvas();
16 canvas->clear(0xFF000000);
17
18 SkPaint paint;
19 paint.setColor(color);
20 paint.setStrokeWidth(3);
21 paint.setStyle(SkPaint::kStroke_Style);
22
23 canvas->drawCircle(SkScalarHalf(size), SkScalarHalf(size), SkScalarHalf(size), paint);
24
25 return surface->newImageSnapshot();
26 }
27
28 namespace skiagm {
29
30 class BigTileImageFilterGM : public GM {
31 public:
BigTileImageFilterGM()32 BigTileImageFilterGM() {
33 this->setBGColor(0xFF000000);
34 }
35
36 protected:
37
onShortName()38 SkString onShortName() override {
39 return SkString("bigtileimagefilter");
40 }
41
onISize()42 SkISize onISize() override{
43 return SkISize::Make(kWidth, kHeight);
44 }
45
onOnceBeforeDraw()46 void onOnceBeforeDraw() override {
47 fRedImage.reset(create_circle_texture(kBitmapSize, SK_ColorRED));
48 fGreenImage.reset(create_circle_texture(kBitmapSize, SK_ColorGREEN));
49 }
50
onDraw(SkCanvas * canvas)51 void onDraw(SkCanvas* canvas) override {
52 canvas->clear(SK_ColorBLACK);
53
54 {
55 SkPaint p;
56
57 SkRect bound = SkRect::MakeWH(SkIntToScalar(kWidth), SkIntToScalar(kHeight));
58 SkAutoTUnref<SkImageFilter> imageSource(SkImageSource::Create(fRedImage));
59 SkAutoTUnref<SkImageFilter> tif(SkTileImageFilter::Create(
60 SkRect::MakeWH(SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize)),
61 SkRect::MakeWH(SkIntToScalar(kWidth), SkIntToScalar(kHeight)),
62 imageSource));
63 p.setImageFilter(tif);
64
65 canvas->saveLayer(&bound, &p);
66 canvas->restore();
67 }
68
69 {
70 SkPaint p2;
71
72 SkRect bound2 = SkRect::MakeWH(SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize));
73
74 SkAutoTUnref<SkImageFilter> tif2(SkTileImageFilter::Create(
75 SkRect::MakeWH(SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize)),
76 SkRect::MakeWH(SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize)),
77 nullptr));
78 p2.setImageFilter(tif2);
79
80 canvas->translate(320, 320);
81 canvas->saveLayer(&bound2, &p2);
82 canvas->setMatrix(SkMatrix::I());
83
84 SkRect bound3 = SkRect::MakeXYWH(320, 320,
85 SkIntToScalar(kBitmapSize),
86 SkIntToScalar(kBitmapSize));
87 canvas->drawImageRect(fGreenImage, bound2, bound3, nullptr,
88 SkCanvas::kStrict_SrcRectConstraint);
89 canvas->restore();
90 }
91 }
92
93 private:
94 static const int kWidth = 512;
95 static const int kHeight = 512;
96 static const int kBitmapSize = 64;
97
98 SkAutoTUnref<SkImage> fRedImage;
99 SkAutoTUnref<SkImage> fGreenImage;
100
101 typedef GM INHERITED;
102 };
103
104 //////////////////////////////////////////////////////////////////////////////
105
106 DEF_GM(return new BigTileImageFilterGM;)
107 }
108