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 "SkScalar.h" 13 #include "SkSize.h" 14 #include "SkPoint.h" 15 #include "SkPaint.h" 16 17 /*! \class SkMatrixImageFilter 18 Matrix transformation image filter. This filter draws its source 19 input transformed by the given matrix. 20 */ 21 22 class SK_API SkMatrixImageFilter : public SkImageFilter { 23 public: 24 /** Construct a 2D transformation image filter. 25 * @param transform The matrix to apply when drawing the src bitmap 26 * @param filterLevel The quality of filtering to apply when scaling. 27 * @param input The input image filter. If NULL, the src bitmap 28 * passed to filterImage() is used instead. 29 */ 30 31 static SkMatrixImageFilter* Create(const SkMatrix& transform, 32 SkFilterQuality, 33 SkImageFilter* input = NULL); 34 #ifdef SK_SUPPORT_LEGACY_FILTERLEVEL_ENUM 35 static SkMatrixImageFilter* Create(const SkMatrix& transform, 36 SkPaint::FilterLevel level, 37 SkImageFilter* input = NULL) { 38 return Create(transform, SkFilterQuality(level), input); 39 } 40 #endif 41 virtual ~SkMatrixImageFilter(); 42 43 void computeFastBounds(const SkRect&, SkRect*) const override; 44 45 SK_TO_STRING_OVERRIDE() 46 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMatrixImageFilter) 47 48 protected: 49 SkMatrixImageFilter(const SkMatrix& transform, 50 SkFilterQuality, 51 SkImageFilter* input); 52 void flatten(SkWriteBuffer&) const override; 53 54 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, 55 SkBitmap* result, SkIPoint* loc) const override; 56 virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&, 57 SkIRect* dst) const override; 58 59 private: 60 SkMatrix fTransform; 61 SkFilterQuality fFilterQuality; 62 typedef SkImageFilter INHERITED; 63 }; 64 65 #endif 66
