1 /* 2 * Copyright 2012 Google Inc. 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 #include "SkImage_Base.h" 9 #include "SkImagePriv.h" 10 #include "SkPicture.h" 11 12 class SkImage_Picture : public SkImage_Base { 13 public: 14 SkImage_Picture(SkPicture*); 15 virtual ~SkImage_Picture(); 16 17 virtual void onDraw(SkCanvas*, SkScalar, SkScalar, const SkPaint*) SK_OVERRIDE; 18 virtual void onDrawRectToRect(SkCanvas*, const SkRect*, const SkRect&, const SkPaint*) SK_OVERRIDE; 19 20 SkPicture* getPicture() { return fPicture; } 21 22 private: 23 SkPicture* fPicture; 24 25 typedef SkImage_Base INHERITED; 26 }; 27 28 /////////////////////////////////////////////////////////////////////////////// 29 30 SkImage_Picture::SkImage_Picture(SkPicture* pict) : INHERITED(pict->width(), pict->height()) { 31 pict->endRecording(); 32 pict->ref(); 33 fPicture = pict; 34 } 35 36 SkImage_Picture::~SkImage_Picture() { 37 fPicture->unref(); 38 } 39 40 void SkImage_Picture::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, 41 const SkPaint* paint) { 42 SkImagePrivDrawPicture(canvas, fPicture, x, y, paint); 43 } 44 45 void SkImage_Picture::onDrawRectToRect(SkCanvas* canvas, const SkRect* src, const SkRect& dst, 46 const SkPaint* paint) { 47 SkImagePrivDrawPicture(canvas, fPicture, src, dst, paint); 48 } 49 50 SkImage* SkNewImageFromPicture(const SkPicture* srcPicture) { 51 /** 52 * We want to snapshot the playback status of the picture, w/o affecting 53 * its ability to continue recording (if needed). 54 * 55 * Optimally this will shared as much data/buffers as it can with 56 * srcPicture, and srcPicture will perform a copy-on-write as needed if it 57 * needs to mutate them later on. 58 */ 59 SkAutoTUnref<SkPicture> playback(SkNEW_ARGS(SkPicture, (*srcPicture))); 60 61 return SkNEW_ARGS(SkImage_Picture, (playback)); 62 } 63 64 SkPicture* SkPictureImageGetPicture(SkImage* pictureImage) { 65 return static_cast<SkImage_Picture*>(pictureImage)->getPicture(); 66 } 67
