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 sk_sp<SkImage> create_circle_texture(int size, SkColor color) {
14 auto surface(SkSurface::MakeRasterN32Premul(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->makeImageSnapshot();
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 = create_circle_texture(kBitmapSize, SK_ColorRED);
48 fGreenImage = 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 const SkRect bound = SkRect::MakeIWH(kWidth, kHeight);
58 sk_sp<SkImageFilter> imageSource(SkImageSource::Make(fRedImage));
59
60 sk_sp<SkImageFilter> tif(SkTileImageFilter::Make(
61 SkRect::MakeIWH(kBitmapSize, kBitmapSize),
62 SkRect::MakeIWH(kWidth, kHeight),
63 std::move(imageSource)));
64
65 p.setImageFilter(std::move(tif));
66
67 canvas->saveLayer(&bound, &p);
68 canvas->restore();
69 }
70
71 {
72 SkPaint p2;
73
74 const SkRect bound2 = SkRect::MakeIWH(kBitmapSize, kBitmapSize);
75
76 sk_sp<SkImageFilter> tif(SkTileImageFilter::Make(
77 SkRect::MakeIWH(kBitmapSize, kBitmapSize),
78 SkRect::MakeIWH(kBitmapSize, kBitmapSize),
79 nullptr));
80
81 p2.setImageFilter(std::move(tif));
82
83 canvas->translate(320, 320);
84 canvas->saveLayer(&bound2, &p2);
85 canvas->setMatrix(SkMatrix::I());
86
87 SkRect bound3 = SkRect::MakeXYWH(320, 320,
88 SkIntToScalar(kBitmapSize),
89 SkIntToScalar(kBitmapSize));
90 canvas->drawImageRect(fGreenImage.get(), bound2, bound3, nullptr,
91 SkCanvas::kStrict_SrcRectConstraint);
92 canvas->restore();
93 }
94 }
95
96 private:
97 static constexpr int kWidth = 512;
98 static constexpr int kHeight = 512;
99 static constexpr int kBitmapSize = 64;
100
101 sk_sp<SkImage> fRedImage;
102 sk_sp<SkImage> fGreenImage;
103
104 typedef GM INHERITED;
105 };
106
107 //////////////////////////////////////////////////////////////////////////////
108
109 DEF_GM(return new BigTileImageFilterGM;)
110 }
111