SkPictureImageFilter.h revision 910702b564048d77e36a68b0f8dda7cc48a8fcff
1/* 2 * Copyright 2013 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 SkPictureImageFilter_DEFINED 9#define SkPictureImageFilter_DEFINED 10 11#include "SkImageFilter.h" 12#include "SkPicture.h" 13 14class SK_API SkPictureImageFilter : public SkImageFilter { 15public: 16 /** 17 * Refs the passed-in picture. 18 */ 19 static SkPictureImageFilter* Create(SkPicture* picture) { 20 return SkNEW_ARGS(SkPictureImageFilter, (picture)); 21 } 22 23 /** 24 * Refs the passed-in picture. cropRect can be used to crop or expand the destination rect when 25 * the picture is drawn. (No scaling is implied by the dest rect; only the CTM is applied.) 26 */ 27 static SkPictureImageFilter* Create(SkPicture* picture, const SkRect& cropRect) { 28 return SkNEW_ARGS(SkPictureImageFilter, (picture, cropRect)); 29 } 30 31 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPictureImageFilter) 32 33protected: 34 explicit SkPictureImageFilter(SkPicture* picture); 35 SkPictureImageFilter(SkPicture* picture, const SkRect& cropRect); 36 virtual ~SkPictureImageFilter(); 37 /* Constructs an SkPictureImageFilter object from an SkReadBuffer. 38 * Note: If the SkPictureImageFilter object construction requires bitmap 39 * decoding, the decoder must be set on the SkReadBuffer parameter by calling 40 * SkReadBuffer::setBitmapDecoder() before calling this constructor. 41 * @param SkReadBuffer Serialized picture data. 42 */ 43 explicit SkPictureImageFilter(SkReadBuffer&); 44 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; 45 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, 46 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 47 virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&, 48 SkIRect* dst) const SK_OVERRIDE; 49 50private: 51 SkPicture* fPicture; 52 SkRect fCropRect; 53 typedef SkImageFilter INHERITED; 54}; 55 56#endif 57