remove picture-backed surfaces

src/image/SkImage_Picture.cpp

-/*
- * Copyright 2012 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkImage_Base.h"
-#include "SkImagePriv.h"
-#include "SkPicture.h"
-
-class SkImage_Picture : public SkImage_Base {
-public:
-    SkImage_Picture(SkPicture*);
-    virtual ~SkImage_Picture();
-
-    virtual void onDraw(SkCanvas*, SkScalar, SkScalar, const SkPaint*) SK_OVERRIDE;
-    virtual void onDrawRectToRect(SkCanvas*, const SkRect*, const SkRect&, const SkPaint*) SK_OVERRIDE;
-
-    SkPicture* getPicture() { return fPicture; }
-
-private:
-    SkPicture*  fPicture;
-
-    typedef SkImage_Base INHERITED;
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-SkImage_Picture::SkImage_Picture(SkPicture* pict) : INHERITED(pict->width(), pict->height()) {
-    pict->endRecording();
-    pict->ref();
-    fPicture = pict;
-}
-
-SkImage_Picture::~SkImage_Picture() {
-    fPicture->unref();
-}
-
-void SkImage_Picture::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y,
-                             const SkPaint* paint) {
-    SkImagePrivDrawPicture(canvas, fPicture, x, y, paint);
-}
-
-void SkImage_Picture::onDrawRectToRect(SkCanvas* canvas, const SkRect* src, const SkRect& dst,
-                             const SkPaint* paint) {
-    SkImagePrivDrawPicture(canvas, fPicture, src, dst, paint);
-}
-
-SkImage* SkNewImageFromPicture(const SkPicture* srcPicture) {
-    /**
-     *  We want to snapshot the playback status of the picture, w/o affecting
-     *  its ability to continue recording (if needed).
-     *
-     *  Optimally this will shared as much data/buffers as it can with
-     *  srcPicture, and srcPicture will perform a copy-on-write as needed if it
-     *  needs to mutate them later on.
-     */
-    SkAutoTUnref<SkPicture> playback(SkNEW_ARGS(SkPicture, (*srcPicture)));
-
-    return SkNEW_ARGS(SkImage_Picture, (playback));
-}
-
-SkPicture* SkPictureImageGetPicture(SkImage* pictureImage) {
-    return static_cast<SkImage_Picture*>(pictureImage)->getPicture();
-}