1 /* 2 * Copyright 2014 The Android Open Source Project 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 8 #ifndef SkMatrixImageFilter_DEFINED 9 #define SkMatrixImageFilter_DEFINED 10 11 #include "SkImageFilter.h" 12 #include "SkMatrix.h" 13 14 /*! \class SkMatrixImageFilter 15 Matrix transformation image filter. This filter draws its source 16 input transformed by the given matrix. 17 */ 18 19 class SkMatrixImageFilter : public SkImageFilter { 20 public: 21 /** Construct a 2D transformation image filter. 22 * @param transform The matrix to apply when drawing the src bitmap 23 * @param filterQuality The quality of filtering to apply when scaling. 24 * @param input The input image filter. If nullptr, the src bitmap 25 * passed to filterImage() is used instead. 26 */ 27 28 static sk_sp<SkImageFilter> Make(const SkMatrix& transform, 29 SkFilterQuality filterQuality, 30 sk_sp<SkImageFilter> input); 31 32 SkRect computeFastBounds(const SkRect&) const override; 33 34 SK_TO_STRING_OVERRIDE() 35 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMatrixImageFilter) 36 37 protected: 38 SkMatrixImageFilter(const SkMatrix& transform, 39 SkFilterQuality, 40 sk_sp<SkImageFilter> input); 41 void flatten(SkWriteBuffer&) const override; 42 43 sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&, 44 SkIPoint* offset) const override; 45 sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override; 46 SkIRect onFilterNodeBounds(const SkIRect& src, const SkMatrix&, MapDirection) const override; 47 48 private: 49 SkMatrix fTransform; 50 SkFilterQuality fFilterQuality; 51 typedef SkImageFilter INHERITED; 52 }; 53 54 #endif 55
