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/*
* Copyright 2010 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkPDFImage_DEFINED
#define SkPDFImage_DEFINED
#include "SkPDFDevice.h"
#include "SkPDFImageStream.h"
#include "SkPDFTypes.h"
#include "SkRefCnt.h"
class SkBitmap;
class SkPDFCatalog;
struct SkIRect;
/** \class SkPDFImage
An image XObject.
*/
// We could play the same trick here as is done in SkPDFGraphicState, storing
// a copy of the Bitmap object (not the pixels), the pixel generation number,
// and settings used from the paint to canonicalize image objects.
class SkPDFImage : public SkPDFImageStream {
public:
/** Create a new Image XObject to represent the passed bitmap.
* @param bitmap The image to encode.
* @param srcRect The rectangle to cut out of bitmap.
* @param paint Used to calculate alpha, masks, etc.
* @return The image XObject or NUll if there is nothing to draw for
* the given parameters.
*/
static SkPDFImage* CreateImage(const SkBitmap& bitmap,
const SkIRect& srcRect,
EncodeToDCTStream encoder);
virtual ~SkPDFImage();
/** Add a Soft Mask (alpha or shape channel) to the image. Refs mask.
* @param mask A gray scale image representing the mask.
* @return The mask argument is returned.
*/
SkPDFImage* addSMask(SkPDFImage* mask);
// The SkPDFObject interface.
virtual void getResources(const SkTSet<SkPDFObject*>& knownResourceObjects,
SkTSet<SkPDFObject*>* newResourceObjects);
private:
SkTDArray<SkPDFObject*> fResources;
/** Create a PDF image XObject. Entries for the image properties are
* automatically added to the stream dictionary.
* @param imageData The final raw bits representing the image.
* @param bitmap The image parameters to use (Config, etc).
* @param srcRect The clipping applied to bitmap before generating
* imageData.
* @param alpha Is this the alpha channel of the bitmap.
* @param paint Used to calculate alpha, masks, etc.
*/
SkPDFImage(SkStream* imageData, const SkBitmap& bitmap,
const SkIRect& srcRect, bool alpha, EncodeToDCTStream encoder);
};
#endif
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