| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "sk_tool_utils.h" |
| #include "SkBlurImageFilter.h" |
| #include "SkColor.h" |
| #include "SkDisplacementMapEffect.h" |
| #include "SkDropShadowImageFilter.h" |
| #include "SkGradientShader.h" |
| #include "SkImage.h" |
| #include "SkImageSource.h" |
| #include "SkLightingImageFilter.h" |
| #include "SkMorphologyImageFilter.h" |
| #include "SkOffsetImageFilter.h" |
| #include "SkPaintImageFilter.h" |
| #include "SkPerlinNoiseShader.h" |
| #include "SkPoint3.h" |
| #include "SkScalar.h" |
| #include "SkSurface.h" |
| #include "gm.h" |
| |
| #define RESIZE_FACTOR SkIntToScalar(4) |
| |
| namespace skiagm { |
| |
| class ImageFiltersScaledGM : public GM { |
| public: |
| ImageFiltersScaledGM() { |
| this->setBGColor(0x00000000); |
| } |
| |
| protected: |
| |
| SkString onShortName() override { |
| return SkString("imagefiltersscaled"); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(1428, 500); |
| } |
| |
| void onOnceBeforeDraw() override { |
| fCheckerboard = SkImage::MakeFromBitmap( |
| sk_tool_utils::create_checkerboard_bitmap(64, 64, 0xFFA0A0A0, 0xFF404040, 8)); |
| fGradientCircle = MakeGradientCircle(64, 64); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->clear(SK_ColorBLACK); |
| |
| SkAutoTUnref<SkImageFilter> gradient(SkImageSource::Create(fGradientCircle.get())); |
| SkAutoTUnref<SkImageFilter> checkerboard(SkImageSource::Create(fCheckerboard.get())); |
| sk_sp<SkShader> noise(SkPerlinNoiseShader::MakeFractalNoise( |
| SkDoubleToScalar(0.1), SkDoubleToScalar(0.05), 1, 0)); |
| SkPaint noisePaint; |
| noisePaint.setShader(noise); |
| |
| SkPoint3 pointLocation = SkPoint3::Make(0, 0, SkIntToScalar(10)); |
| SkPoint3 spotLocation = SkPoint3::Make(SkIntToScalar(-10), |
| SkIntToScalar(-10), |
| SkIntToScalar(20)); |
| SkPoint3 spotTarget = SkPoint3::Make(SkIntToScalar(40), SkIntToScalar(40), 0); |
| SkScalar spotExponent = SK_Scalar1; |
| SkScalar cutoffAngle = SkIntToScalar(15); |
| SkScalar kd = SkIntToScalar(2); |
| SkScalar surfaceScale = SkIntToScalar(1); |
| SkColor white(0xFFFFFFFF); |
| SkMatrix resizeMatrix; |
| resizeMatrix.setScale(RESIZE_FACTOR, RESIZE_FACTOR); |
| |
| SkImageFilter* filters[] = { |
| SkBlurImageFilter::Create(SkIntToScalar(4), SkIntToScalar(4)), |
| SkDropShadowImageFilter::Create(SkIntToScalar(5), SkIntToScalar(10), |
| SkIntToScalar(3), SkIntToScalar(3), SK_ColorYELLOW, |
| SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode), |
| SkDisplacementMapEffect::Create(SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkIntToScalar(12), |
| gradient.get(), |
| checkerboard.get()), |
| SkDilateImageFilter::Create(1, 1, checkerboard.get()), |
| SkErodeImageFilter::Create(1, 1, checkerboard.get()), |
| SkOffsetImageFilter::Create(SkIntToScalar(32), 0), |
| SkImageFilter::CreateMatrixFilter(resizeMatrix, kNone_SkFilterQuality), |
| SkPaintImageFilter::Make(noisePaint).release(), |
| SkLightingImageFilter::CreatePointLitDiffuse(pointLocation, white, surfaceScale, kd), |
| SkLightingImageFilter::CreateSpotLitDiffuse(spotLocation, spotTarget, spotExponent, |
| cutoffAngle, white, surfaceScale, kd), |
| }; |
| |
| SkVector scales[] = { |
| SkVector::Make(SkScalarInvert(2), SkScalarInvert(2)), |
| SkVector::Make(SkIntToScalar(1), SkIntToScalar(1)), |
| SkVector::Make(SkIntToScalar(1), SkIntToScalar(2)), |
| SkVector::Make(SkIntToScalar(2), SkIntToScalar(1)), |
| SkVector::Make(SkIntToScalar(2), SkIntToScalar(2)), |
| }; |
| |
| SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64)); |
| SkScalar margin = SkIntToScalar(16); |
| SkRect bounds = r; |
| bounds.outset(margin, margin); |
| |
| for (size_t j = 0; j < SK_ARRAY_COUNT(scales); ++j) { |
| canvas->save(); |
| for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) { |
| SkPaint paint; |
| paint.setColor(SK_ColorBLUE); |
| paint.setImageFilter(filters[i]); |
| paint.setAntiAlias(true); |
| canvas->save(); |
| canvas->scale(scales[j].fX, scales[j].fY); |
| canvas->clipRect(r); |
| if (5 == i) { |
| canvas->translate(SkIntToScalar(-32), 0); |
| } else if (6 == i) { |
| canvas->scale(SkScalarInvert(RESIZE_FACTOR), |
| SkScalarInvert(RESIZE_FACTOR)); |
| } |
| canvas->drawCircle(r.centerX(), r.centerY(), r.width()*2/5, paint); |
| canvas->restore(); |
| canvas->translate(r.width() * scales[j].fX + margin, 0); |
| } |
| canvas->restore(); |
| canvas->translate(0, r.height() * scales[j].fY + margin); |
| } |
| |
| for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) { |
| filters[i]->unref(); |
| } |
| } |
| |
| private: |
| static sk_sp<SkImage> MakeGradientCircle(int width, int height) { |
| SkScalar x = SkIntToScalar(width / 2); |
| SkScalar y = SkIntToScalar(height / 2); |
| SkScalar radius = SkScalarMul(SkMinScalar(x, y), SkIntToScalar(4) / SkIntToScalar(5)); |
| auto surface(SkSurface::MakeRasterN32Premul(width, height)); |
| SkCanvas* canvas = surface->getCanvas(); |
| canvas->clear(0x00000000); |
| SkColor colors[2]; |
| colors[0] = SK_ColorWHITE; |
| colors[1] = SK_ColorBLACK; |
| SkPaint paint; |
| paint.setShader(SkGradientShader::MakeRadial(SkPoint::Make(x, y), radius, colors, nullptr, |
| 2, SkShader::kClamp_TileMode)); |
| canvas->drawCircle(x, y, radius, paint); |
| |
| return surface->makeImageSnapshot(); |
| } |
| |
| sk_sp<SkImage> fCheckerboard, fGradientCircle; |
| |
| typedef GM INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new ImageFiltersScaledGM;) |
| } |