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 19 private: 20 SkPicture* fPicture; 21 22 typedef SkImage_Base INHERITED; 23 }; 24 25 /////////////////////////////////////////////////////////////////////////////// 26 27 SkImage_Picture::SkImage_Picture(SkPicture* pict) : INHERITED(pict->width(), pict->height()) { 28 pict->endRecording(); 29 pict->ref(); 30 fPicture = pict; 31 } 32 33 SkImage_Picture::~SkImage_Picture() { 34 fPicture->unref(); 35 } 36 37 void SkImage_Picture::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, 38 const SkPaint* paint) { 39 SkImagePrivDrawPicture(canvas, fPicture, x, y, paint); 40 } 41 42 SkImage* SkNewImageFromPicture(const SkPicture* srcPicture) { 43 /** 44 * We want to snapshot the playback status of the picture, w/o affecting 45 * its ability to continue recording (if needed). 46 * 47 * Optimally this will shared as much data/buffers as it can with 48 * srcPicture, and srcPicture will perform a copy-on-write as needed if it 49 * needs to mutate them later on. 50 */ 51 SkAutoTUnref<SkPicture> playback(SkNEW_ARGS(SkPicture, (*srcPicture))); 52 53 return SkNEW_ARGS(SkImage_Picture, (playback)); 54 } 55
