virtual void onDraw(SkCanvas* canvas) { if (!fInitialized) { this->make_bitmap(); fInitialized = true; } canvas->clear(0x00000000); { SkAutoTUnref<SkImageFilter> bitmapSource(new SkBitmapSource(fBitmap)); SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(SK_ColorRED, SkXfermode::kSrcIn_Mode)); SkAutoTUnref<SkImageFilter> blur(new SkBlurImageFilter(4.0f, 4.0f, bitmapSource)); SkAutoTUnref<SkImageFilter> erode(new SkErodeImageFilter(4, 4, blur)); SkAutoTUnref<SkImageFilter> color(SkColorFilterImageFilter::Create(cf, erode)); SkAutoTUnref<SkImageFilter> merge(new SkMergeImageFilter(blur, color)); SkPaint paint; paint.setImageFilter(merge); canvas->drawPaint(paint); } { SkAutoTUnref<SkImageFilter> morph(new SkDilateImageFilter(5, 5)); SkScalar matrix[20] = { SK_Scalar1, 0, 0, 0, 0, 0, SK_Scalar1, 0, 0, 0, 0, 0, SK_Scalar1, 0, 0, 0, 0, 0, SkFloatToScalar(0.5f), 0 }; SkAutoTUnref<SkColorFilter> matrixFilter(new SkColorMatrixFilter(matrix)); SkAutoTUnref<SkImageFilter> colorMorph(SkColorFilterImageFilter::Create(matrixFilter, morph)); SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(SkXfermode::kSrcOver_Mode)); SkAutoTUnref<SkImageFilter> blendColor(new SkXfermodeImageFilter(mode, colorMorph)); SkPaint paint; paint.setImageFilter(blendColor); canvas->drawBitmap(fBitmap, 100, 0, &paint); } }
void onDraw(SkCanvas* canvas) override { canvas->clear(SK_ColorBLACK); { sk_sp<SkImageFilter> bitmapSource(SkImageSource::Make(fImage)); sk_sp<SkColorFilter> cf(SkColorFilter::MakeModeFilter(SK_ColorRED, SkBlendMode::kSrcIn)); sk_sp<SkImageFilter> blur(SkBlurImageFilter::Make(4.0f, 4.0f, std::move(bitmapSource))); sk_sp<SkImageFilter> erode(SkErodeImageFilter::Make(4, 4, blur)); sk_sp<SkImageFilter> color(SkColorFilterImageFilter::Make(std::move(cf), std::move(erode))); sk_sp<SkImageFilter> merge(SkMergeImageFilter::Make(blur, color, SkBlendMode::kSrcOver)); SkPaint paint; paint.setImageFilter(std::move(merge)); canvas->drawPaint(paint); canvas->translate(SkIntToScalar(100), 0); } { sk_sp<SkImageFilter> morph(SkDilateImageFilter::Make(5, 5, nullptr)); SkScalar matrix[20] = { SK_Scalar1, 0, 0, 0, 0, 0, SK_Scalar1, 0, 0, 0, 0, 0, SK_Scalar1, 0, 0, 0, 0, 0, 0.5f, 0 }; sk_sp<SkColorFilter> matrixFilter(SkColorFilter::MakeMatrixFilterRowMajor255(matrix)); sk_sp<SkImageFilter> colorMorph(SkColorFilterImageFilter::Make(std::move(matrixFilter), std::move(morph))); SkPaint paint; paint.setImageFilter(SkXfermodeImageFilter::Make(SkBlendMode::kSrcOver, std::move(colorMorph))); DrawClippedImage(canvas, fImage.get(), paint); canvas->translate(SkIntToScalar(100), 0); } { SkScalar matrix[20] = { SK_Scalar1, 0, 0, 0, 0, 0, SK_Scalar1, 0, 0, 0, 0, 0, SK_Scalar1, 0, 0, 0, 0, 0, 0.5f, 0 }; sk_sp<SkColorFilter> matrixCF(SkColorFilter::MakeMatrixFilterRowMajor255(matrix)); sk_sp<SkImageFilter> matrixFilter(SkColorFilterImageFilter::Make(std::move(matrixCF), nullptr)); sk_sp<SkImageFilter> offsetFilter(SkOffsetImageFilter::Make(10.0f, 10.f, matrixFilter)); SkPaint paint; paint.setImageFilter( SkXfermodeImageFilter::MakeArithmetic(0, 1, 1, 0, true, std::move(matrixFilter), std::move(offsetFilter), nullptr)); DrawClippedImage(canvas, fImage.get(), paint); canvas->translate(SkIntToScalar(100), 0); } { sk_sp<SkImageFilter> blur(SkBlurImageFilter::Make(SkIntToScalar(10), SkIntToScalar(10), nullptr)); SkImageFilter::CropRect cropRect(SkRect::MakeWH(SkIntToScalar(95), SkIntToScalar(100))); SkPaint paint; paint.setImageFilter( SkXfermodeImageFilter::Make(SkBlendMode::kSrcIn, std::move(blur), nullptr, &cropRect)); DrawClippedImage(canvas, fImage.get(), paint); canvas->translate(SkIntToScalar(100), 0); } { // Dilate -> matrix convolution. // This tests that a filter using asFragmentProcessor (matrix // convolution) correctly handles a non-zero source offset // (supplied by the dilate). sk_sp<SkImageFilter> dilate(SkDilateImageFilter::Make(5, 5, nullptr)); SkScalar kernel[9] = { SkIntToScalar(-1), SkIntToScalar( -1 ), SkIntToScalar(-1), SkIntToScalar(-1), SkIntToScalar( 7 ), SkIntToScalar(-1), SkIntToScalar(-1), SkIntToScalar( -1 ), SkIntToScalar(-1), }; SkISize kernelSize = SkISize::Make(3, 3); SkScalar gain = 1.0f, bias = SkIntToScalar(0); SkIPoint kernelOffset = SkIPoint::Make(1, 1); auto tileMode = SkMatrixConvolutionImageFilter::kClamp_TileMode; bool convolveAlpha = false; sk_sp<SkImageFilter> convolve(SkMatrixConvolutionImageFilter::Make(kernelSize, kernel, gain, bias, kernelOffset, tileMode, convolveAlpha, std::move(dilate))); SkPaint paint; paint.setImageFilter(std::move(convolve)); DrawClippedImage(canvas, fImage.get(), paint); canvas->translate(SkIntToScalar(100), 0); } { // Test that crop offsets are absolute, not relative to the parent's crop rect. sk_sp<SkColorFilter> cf1(SkColorFilter::MakeModeFilter(SK_ColorBLUE, SkBlendMode::kSrcIn)); sk_sp<SkColorFilter> cf2(SkColorFilter::MakeModeFilter(SK_ColorGREEN, SkBlendMode::kSrcIn)); SkImageFilter::CropRect outerRect(SkRect::MakeXYWH(SkIntToScalar(10), SkIntToScalar(10), SkIntToScalar(80), SkIntToScalar(80))); SkImageFilter::CropRect innerRect(SkRect::MakeXYWH(SkIntToScalar(20), SkIntToScalar(20), SkIntToScalar(60), SkIntToScalar(60))); sk_sp<SkImageFilter> color1(SkColorFilterImageFilter::Make(std::move(cf1), nullptr, &outerRect)); sk_sp<SkImageFilter> color2(SkColorFilterImageFilter::Make(std::move(cf2), std::move(color1), &innerRect)); SkPaint paint; paint.setImageFilter(std::move(color2)); paint.setColor(SK_ColorRED); canvas->drawRect(SkRect::MakeXYWH(0, 0, 100, 100), paint); canvas->translate(SkIntToScalar(100), 0); } }