imagefiltersclipped.cpp 6.4 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/SkCanvas.h"
  10. #include "include/core/SkColor.h"
  11. #include "include/core/SkFilterQuality.h"
  12. #include "include/core/SkImage.h"
  13. #include "include/core/SkImageFilter.h"
  14. #include "include/core/SkMatrix.h"
  15. #include "include/core/SkPaint.h"
  16. #include "include/core/SkPoint.h"
  17. #include "include/core/SkPoint3.h"
  18. #include "include/core/SkRect.h"
  19. #include "include/core/SkRefCnt.h"
  20. #include "include/core/SkScalar.h"
  21. #include "include/core/SkShader.h"
  22. #include "include/core/SkSize.h"
  23. #include "include/core/SkString.h"
  24. #include "include/core/SkSurface.h"
  25. #include "include/core/SkTileMode.h"
  26. #include "include/core/SkTypes.h"
  27. #include "include/effects/SkBlurImageFilter.h"
  28. #include "include/effects/SkDisplacementMapEffect.h"
  29. #include "include/effects/SkDropShadowImageFilter.h"
  30. #include "include/effects/SkGradientShader.h"
  31. #include "include/effects/SkImageSource.h"
  32. #include "include/effects/SkLightingImageFilter.h"
  33. #include "include/effects/SkMorphologyImageFilter.h"
  34. #include "include/effects/SkOffsetImageFilter.h"
  35. #include "include/effects/SkPaintImageFilter.h"
  36. #include "include/effects/SkPerlinNoiseShader.h"
  37. #include "tools/ToolUtils.h"
  38. #include <utility>
  39. #define RESIZE_FACTOR_X SkIntToScalar(2)
  40. #define RESIZE_FACTOR_Y SkIntToScalar(5)
  41. static sk_sp<SkImage> make_gradient_circle(int width, int height) {
  42. SkScalar x = SkIntToScalar(width / 2);
  43. SkScalar y = SkIntToScalar(height / 2);
  44. SkScalar radius = SkMinScalar(x, y) * 0.8f;
  45. auto surface(SkSurface::MakeRasterN32Premul(width, height));
  46. SkCanvas* canvas = surface->getCanvas();
  47. canvas->clear(0x00000000);
  48. SkColor colors[2];
  49. colors[0] = SK_ColorWHITE;
  50. colors[1] = SK_ColorBLACK;
  51. SkPaint paint;
  52. paint.setShader(SkGradientShader::MakeRadial(SkPoint::Make(x, y), radius, colors, nullptr,
  53. 2, SkTileMode::kClamp));
  54. canvas->drawCircle(x, y, radius, paint);
  55. return surface->makeImageSnapshot();
  56. }
  57. static void draw_clipped_filter(SkCanvas* canvas, sk_sp<SkImageFilter> filter, size_t i,
  58. const SkRect& primBounds, const SkRect& clipBounds) {
  59. SkPaint paint;
  60. paint.setColor(SK_ColorWHITE);
  61. paint.setImageFilter(std::move(filter));
  62. paint.setAntiAlias(true);
  63. canvas->save();
  64. canvas->clipRect(clipBounds);
  65. if (5 == i) {
  66. canvas->translate(SkIntToScalar(16), SkIntToScalar(-32));
  67. } else if (6 == i) {
  68. canvas->scale(SkScalarInvert(RESIZE_FACTOR_X), SkScalarInvert(RESIZE_FACTOR_Y));
  69. }
  70. canvas->drawCircle(primBounds.centerX(), primBounds.centerY(),
  71. primBounds.width() * 2 / 5, paint);
  72. canvas->restore();
  73. }
  74. namespace skiagm {
  75. class ImageFiltersClippedGM : public GM {
  76. public:
  77. ImageFiltersClippedGM() {
  78. this->setBGColor(0x00000000);
  79. }
  80. protected:
  81. SkString onShortName() override {
  82. return SkString("imagefiltersclipped");
  83. }
  84. SkISize onISize() override {
  85. return SkISize::Make(860, 500);
  86. }
  87. void onOnceBeforeDraw() override {
  88. fCheckerboard = SkImage::MakeFromBitmap(
  89. ToolUtils::create_checkerboard_bitmap(64, 64, 0xFFA0A0A0, 0xFF404040, 8));
  90. fGradientCircle = make_gradient_circle(64, 64);
  91. }
  92. void onDraw(SkCanvas* canvas) override {
  93. canvas->clear(SK_ColorBLACK);
  94. sk_sp<SkImageFilter> gradient(SkImageSource::Make(fGradientCircle));
  95. sk_sp<SkImageFilter> checkerboard(SkImageSource::Make(fCheckerboard));
  96. SkMatrix resizeMatrix;
  97. resizeMatrix.setScale(RESIZE_FACTOR_X, RESIZE_FACTOR_Y);
  98. SkPoint3 pointLocation = SkPoint3::Make(32, 32, SkIntToScalar(10));
  99. sk_sp<SkImageFilter> filters[] = {
  100. SkBlurImageFilter::Make(SkIntToScalar(12), SkIntToScalar(12), nullptr),
  101. SkDropShadowImageFilter::Make(
  102. SkIntToScalar(10), SkIntToScalar(10),
  103. SkIntToScalar(3), SkIntToScalar(3), SK_ColorGREEN,
  104. SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
  105. nullptr),
  106. SkDisplacementMapEffect::Make(SkDisplacementMapEffect::kR_ChannelSelectorType,
  107. SkDisplacementMapEffect::kR_ChannelSelectorType,
  108. SkIntToScalar(12),
  109. std::move(gradient),
  110. checkerboard),
  111. SkDilateImageFilter::Make(2, 2, checkerboard),
  112. SkErodeImageFilter::Make(2, 2, checkerboard),
  113. SkOffsetImageFilter::Make(SkIntToScalar(-16), SkIntToScalar(32), nullptr),
  114. SkImageFilter::MakeMatrixFilter(resizeMatrix, kNone_SkFilterQuality, nullptr),
  115. SkLightingImageFilter::MakePointLitDiffuse(pointLocation, SK_ColorWHITE, SK_Scalar1,
  116. SkIntToScalar(2), checkerboard),
  117. };
  118. SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
  119. SkScalar margin = SkIntToScalar(16);
  120. SkRect bounds = r;
  121. bounds.outset(margin, margin);
  122. canvas->save();
  123. for (int xOffset = 0; xOffset < 80; xOffset += 16) {
  124. canvas->save();
  125. bounds.fLeft = SkIntToScalar(xOffset);
  126. for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
  127. draw_clipped_filter(canvas, filters[i], i, r, bounds);
  128. canvas->translate(r.width() + margin, 0);
  129. }
  130. canvas->restore();
  131. canvas->translate(0, r.height() + margin);
  132. }
  133. canvas->restore();
  134. SkPaint noisePaint;
  135. noisePaint.setShader(SkPerlinNoiseShader::MakeFractalNoise(0.1f, 0.05f, 1, 0));
  136. sk_sp<SkImageFilter> rectFilter(SkPaintImageFilter::Make(noisePaint));
  137. canvas->translate(SK_ARRAY_COUNT(filters)*(r.width() + margin), 0);
  138. for (int xOffset = 0; xOffset < 80; xOffset += 16) {
  139. bounds.fLeft = SkIntToScalar(xOffset);
  140. draw_clipped_filter(canvas, rectFilter, 0, r, bounds);
  141. canvas->translate(0, r.height() + margin);
  142. }
  143. }
  144. private:
  145. sk_sp<SkImage> fCheckerboard, fGradientCircle;
  146. typedef GM INHERITED;
  147. };
  148. //////////////////////////////////////////////////////////////////////////////
  149. DEF_GM(return new ImageFiltersClippedGM;)
  150. }