bigtileimagefilter.cpp 3.7 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123
  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. #include "gm/gm.h"
  8. #include "include/core/SkCanvas.h"
  9. #include "include/core/SkColor.h"
  10. #include "include/core/SkImage.h"
  11. #include "include/core/SkImageFilter.h"
  12. #include "include/core/SkMatrix.h"
  13. #include "include/core/SkPaint.h"
  14. #include "include/core/SkRect.h"
  15. #include "include/core/SkRefCnt.h"
  16. #include "include/core/SkScalar.h"
  17. #include "include/core/SkSize.h"
  18. #include "include/core/SkString.h"
  19. #include "include/core/SkSurface.h"
  20. #include "include/effects/SkImageSource.h"
  21. #include "include/effects/SkTileImageFilter.h"
  22. #include <utility>
  23. static sk_sp<SkImage> create_circle_texture(int size, SkColor color) {
  24. auto surface(SkSurface::MakeRasterN32Premul(size, size));
  25. SkCanvas* canvas = surface->getCanvas();
  26. canvas->clear(0xFF000000);
  27. SkPaint paint;
  28. paint.setColor(color);
  29. paint.setStrokeWidth(3);
  30. paint.setStyle(SkPaint::kStroke_Style);
  31. canvas->drawCircle(SkScalarHalf(size), SkScalarHalf(size), SkScalarHalf(size), paint);
  32. return surface->makeImageSnapshot();
  33. }
  34. namespace skiagm {
  35. class BigTileImageFilterGM : public GM {
  36. public:
  37. BigTileImageFilterGM() {
  38. this->setBGColor(0xFF000000);
  39. }
  40. protected:
  41. SkString onShortName() override {
  42. return SkString("bigtileimagefilter");
  43. }
  44. SkISize onISize() override {
  45. return SkISize::Make(kWidth, kHeight);
  46. }
  47. void onOnceBeforeDraw() override {
  48. fRedImage = create_circle_texture(kBitmapSize, SK_ColorRED);
  49. fGreenImage = create_circle_texture(kBitmapSize, SK_ColorGREEN);
  50. }
  51. void onDraw(SkCanvas* canvas) override {
  52. canvas->clear(SK_ColorBLACK);
  53. {
  54. SkPaint p;
  55. const SkRect bound = SkRect::MakeIWH(kWidth, kHeight);
  56. sk_sp<SkImageFilter> imageSource(SkImageSource::Make(fRedImage));
  57. sk_sp<SkImageFilter> tif(SkTileImageFilter::Make(
  58. SkRect::MakeIWH(kBitmapSize, kBitmapSize),
  59. SkRect::MakeIWH(kWidth, kHeight),
  60. std::move(imageSource)));
  61. p.setImageFilter(std::move(tif));
  62. canvas->saveLayer(&bound, &p);
  63. canvas->restore();
  64. }
  65. {
  66. SkPaint p2;
  67. const SkRect bound2 = SkRect::MakeIWH(kBitmapSize, kBitmapSize);
  68. sk_sp<SkImageFilter> tif(SkTileImageFilter::Make(
  69. SkRect::MakeIWH(kBitmapSize, kBitmapSize),
  70. SkRect::MakeIWH(kBitmapSize, kBitmapSize),
  71. nullptr));
  72. p2.setImageFilter(std::move(tif));
  73. canvas->translate(320, 320);
  74. canvas->saveLayer(&bound2, &p2);
  75. canvas->setMatrix(SkMatrix::I());
  76. SkRect bound3 = SkRect::MakeXYWH(320, 320,
  77. SkIntToScalar(kBitmapSize),
  78. SkIntToScalar(kBitmapSize));
  79. canvas->drawImageRect(fGreenImage.get(), bound2, bound3, nullptr,
  80. SkCanvas::kStrict_SrcRectConstraint);
  81. canvas->restore();
  82. }
  83. }
  84. private:
  85. static constexpr int kWidth = 512;
  86. static constexpr int kHeight = 512;
  87. static constexpr int kBitmapSize = 64;
  88. sk_sp<SkImage> fRedImage;
  89. sk_sp<SkImage> fGreenImage;
  90. typedef GM INHERITED;
  91. };
  92. //////////////////////////////////////////////////////////////////////////////
  93. DEF_GM(return new BigTileImageFilterGM;)
  94. }