| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm.h" |
| #include "sk_tool_utils.h" |
| |
| #include "SkArithmeticImageFilter.h" |
| #include "SkBlurImageFilter.h" |
| #include "SkColorFilter.h" |
| #include "SkColorFilterImageFilter.h" |
| #include "SkColorMatrixFilter.h" |
| #include "SkImage.h" |
| #include "SkImageSource.h" |
| #include "SkMatrixConvolutionImageFilter.h" |
| #include "SkMergeImageFilter.h" |
| #include "SkMorphologyImageFilter.h" |
| #include "SkOffsetImageFilter.h" |
| #include "SkReadBuffer.h" |
| #include "SkSpecialImage.h" |
| #include "SkSpecialSurface.h" |
| #include "SkWriteBuffer.h" |
| #include "SkXfermodeImageFilter.h" |
| |
| class ImageFiltersGraphGM : public skiagm::GM { |
| public: |
| ImageFiltersGraphGM() {} |
| |
| protected: |
| |
| SkString onShortName() override { |
| return SkString("imagefiltersgraph"); |
| } |
| |
| SkISize onISize() override { return SkISize::Make(600, 150); } |
| |
| void onOnceBeforeDraw() override { |
| fImage = SkImage::MakeFromBitmap( |
| sk_tool_utils::create_string_bitmap(100, 100, SK_ColorWHITE, 20, 70, 96, "e")); |
| } |
| |
| 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)); |
| |
| 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(SkArithmeticImageFilter::Make( |
| 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); |
| } |
| } |
| |
| private: |
| static void DrawClippedImage(SkCanvas* canvas, const SkImage* image, const SkPaint& paint) { |
| canvas->save(); |
| canvas->clipRect(SkRect::MakeIWH(image->width(), image->height())); |
| canvas->drawImage(image, 0, 0, &paint); |
| canvas->restore(); |
| } |
| |
| sk_sp<SkImage> fImage; |
| |
| typedef GM INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new ImageFiltersGraphGM;) |