1 /* 2 * Copyright 2015 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 SkLocalMatrixImageFilter_DEFINED 9 #define SkLocalMatrixImageFilter_DEFINED 10 11 #include "SkImageFilter.h" 12 13 /** 14 * Wraps another imagefilter + matrix, such that using this filter will give the same result 15 * as using the wrapped filter with the matrix applied to its context. 16 */ 17 class SkLocalMatrixImageFilter : public SkImageFilter { 18 public: 19 static sk_sp<SkImageFilter> Make(const SkMatrix& localM, sk_sp<SkImageFilter> input); 20 21 SK_TO_STRING_OVERRIDE() 22 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLocalMatrixImageFilter) 23 24 protected: 25 void flatten(SkWriteBuffer&) const override; 26 sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&, 27 SkIPoint* offset) const override; 28 sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override; 29 SkIRect onFilterBounds(const SkIRect& src, const SkMatrix&, MapDirection) const override; 30 31 private: 32 SkLocalMatrixImageFilter(const SkMatrix& localM, sk_sp<SkImageFilter> input); 33 34 SkMatrix fLocalM; 35 36 typedef SkImageFilter INHERITED; 37 }; 38 39 #endif 40
