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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkPDFBitmap_DEFINED
#define SkPDFBitmap_DEFINED
#include "SkPDFTypes.h"
#include "SkBitmap.h"
class SkPDFCanon;
/**
* SkPDFBitmap wraps a SkBitmap and serializes it as an image Xobject.
* It is designed to use a minimal amout of memory, aside from refing
* the bitmap's pixels, and its emitObject() does not cache any data.
*
* If !bitmap.isImmutable(), then a copy of the bitmap must be made;
* there is no way around this.
*
* The SkPDFBitmap::Create function will check the canon for duplicates.
*/
class SkPDFBitmap : public SkPDFObject {
public:
// Returns NULL on unsupported bitmap;
static SkPDFBitmap* Create(SkPDFCanon*, const SkBitmap&);
~SkPDFBitmap();
void emitObject(SkWStream*,
const SkPDFObjNumMap& objNumMap,
const SkPDFSubstituteMap& substitutes) override;
void addResources(SkPDFObjNumMap*,
const SkPDFSubstituteMap&) const override;
bool equals(const SkBitmap& other) const {
return fBitmap.getGenerationID() == other.getGenerationID() &&
fBitmap.pixelRefOrigin() == other.pixelRefOrigin() &&
fBitmap.dimensions() == other.dimensions();
}
private:
const SkBitmap fBitmap;
const SkAutoTUnref<SkPDFObject> fSMask;
SkPDFBitmap(const SkBitmap&, SkPDFObject*);
};
#endif // SkPDFBitmap_DEFINED
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