emboss.cpp 2.7 KB

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  1. /*
  2. * Copyright 2014 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/SkBitmap.h"
  9. #include "include/core/SkBlendMode.h"
  10. #include "include/core/SkCanvas.h"
  11. #include "include/core/SkColor.h"
  12. #include "include/core/SkColorFilter.h"
  13. #include "include/core/SkFont.h"
  14. #include "include/core/SkMaskFilter.h"
  15. #include "include/core/SkPaint.h"
  16. #include "include/core/SkScalar.h"
  17. #include "include/core/SkShader.h"
  18. #include "include/core/SkSize.h"
  19. #include "include/core/SkString.h"
  20. #include "include/core/SkTypeface.h"
  21. #include "src/core/SkBlurMask.h"
  22. #include "src/effects/SkEmbossMaskFilter.h"
  23. static SkBitmap make_bm() {
  24. SkBitmap bm;
  25. bm.allocN32Pixels(100, 100);
  26. SkCanvas canvas(bm);
  27. canvas.clear(0);
  28. SkPaint paint;
  29. paint.setAntiAlias(true);
  30. canvas.drawCircle(50, 50, 50, paint);
  31. return bm;
  32. }
  33. class EmbossGM : public skiagm::GM {
  34. public:
  35. EmbossGM() {
  36. }
  37. protected:
  38. SkString onShortName() override {
  39. return SkString("emboss");
  40. }
  41. SkISize onISize() override {
  42. return SkISize::Make(600, 120);
  43. }
  44. void onDraw(SkCanvas* canvas) override {
  45. SkPaint paint;
  46. SkBitmap bm = make_bm();
  47. canvas->drawBitmap(bm, 10, 10, &paint);
  48. canvas->translate(bm.width() + SkIntToScalar(10), 0);
  49. paint.setMaskFilter(SkEmbossMaskFilter::Make(
  50. SkBlurMask::ConvertRadiusToSigma(3),
  51. { { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 128, 16*2 }));
  52. canvas->drawBitmap(bm, 10, 10, &paint);
  53. canvas->translate(bm.width() + SkIntToScalar(10), 0);
  54. // this combination of emboss+colorfilter used to crash -- so we exercise it to
  55. // confirm that we have a fix.
  56. paint.setColorFilter(SkColorFilters::Blend(0xFFFF0000, SkBlendMode::kSrcATop));
  57. canvas->drawBitmap(bm, 10, 10, &paint);
  58. canvas->translate(bm.width() + SkIntToScalar(10), 0);
  59. paint.setAntiAlias(true);
  60. paint.setStyle(SkPaint::kStroke_Style);
  61. paint.setStrokeWidth(SkIntToScalar(10));
  62. paint.setMaskFilter(SkEmbossMaskFilter::Make(
  63. SkBlurMask::ConvertRadiusToSigma(4),
  64. { { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 128, 16*2 }));
  65. paint.setColorFilter(nullptr);
  66. paint.setShader(SkShaders::Color(SK_ColorBLUE));
  67. paint.setDither(true);
  68. canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
  69. SkIntToScalar(30), paint);
  70. canvas->translate(SkIntToScalar(100), 0);
  71. paint.setStyle(SkPaint::kFill_Style);
  72. canvas->drawString("Hello", 0, 50, SkFont(nullptr, 50), paint);
  73. }
  74. private:
  75. typedef skiagm::GM INHERITED;
  76. };
  77. DEF_GM(return new EmbossGM;)