1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/pdf/SkPDFImage.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,98 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2010 The Android Open Source Project
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +
1.12 +
1.13 +#ifndef SkPDFImage_DEFINED
1.14 +#define SkPDFImage_DEFINED
1.15 +
1.16 +#include "SkPicture.h"
1.17 +#include "SkPDFDevice.h"
1.18 +#include "SkPDFStream.h"
1.19 +#include "SkPDFTypes.h"
1.20 +#include "SkRefCnt.h"
1.21 +
1.22 +class SkBitmap;
1.23 +class SkPDFCatalog;
1.24 +struct SkIRect;
1.25 +
1.26 +/** \class SkPDFImage
1.27 +
1.28 + An image XObject.
1.29 +*/
1.30 +
1.31 +// We could play the same trick here as is done in SkPDFGraphicState, storing
1.32 +// a copy of the Bitmap object (not the pixels), the pixel generation number,
1.33 +// and settings used from the paint to canonicalize image objects.
1.34 +class SkPDFImage : public SkPDFStream {
1.35 +public:
1.36 + /** Create a new Image XObject to represent the passed bitmap.
1.37 + * @param bitmap The image to encode.
1.38 + * @param srcRect The rectangle to cut out of bitmap.
1.39 + * @param paint Used to calculate alpha, masks, etc.
1.40 + * @return The image XObject or NUll if there is nothing to draw for
1.41 + * the given parameters.
1.42 + */
1.43 + static SkPDFImage* CreateImage(const SkBitmap& bitmap,
1.44 + const SkIRect& srcRect,
1.45 + SkPicture::EncodeBitmap encoder);
1.46 +
1.47 + virtual ~SkPDFImage();
1.48 +
1.49 + /** Add a Soft Mask (alpha or shape channel) to the image. Refs mask.
1.50 + * @param mask A gray scale image representing the mask.
1.51 + * @return The mask argument is returned.
1.52 + */
1.53 + SkPDFImage* addSMask(SkPDFImage* mask);
1.54 +
1.55 + bool isEmpty() {
1.56 + return fSrcRect.isEmpty();
1.57 + }
1.58 +
1.59 + // The SkPDFObject interface.
1.60 + virtual void getResources(const SkTSet<SkPDFObject*>& knownResourceObjects,
1.61 + SkTSet<SkPDFObject*>* newResourceObjects);
1.62 +
1.63 +private:
1.64 + SkBitmap fBitmap;
1.65 + bool fIsAlpha;
1.66 + SkIRect fSrcRect;
1.67 + SkPicture::EncodeBitmap fEncoder;
1.68 + bool fStreamValid;
1.69 +
1.70 + SkTDArray<SkPDFObject*> fResources;
1.71 +
1.72 + /** Create a PDF image XObject. Entries for the image properties are
1.73 + * automatically added to the stream dictionary.
1.74 + * @param stream The image stream. May be NULL. Otherwise, this
1.75 + * (instead of the input bitmap) will be used as the
1.76 + * PDF's content stream, possibly with lossless encoding.
1.77 + * @param bitmap The image. If a stream is not given, its color data
1.78 + * will be used as the image. If a stream is given, this
1.79 + * is used for configuration only.
1.80 + * @param isAlpha Whether or not this is the alpha of an image.
1.81 + * @param srcRect The clipping applied to bitmap before generating
1.82 + * imageData.
1.83 + * @param encoder A function used to encode the bitmap for compression.
1.84 + * May be NULL.
1.85 + */
1.86 + SkPDFImage(SkStream* stream, const SkBitmap& bitmap, bool isAlpha,
1.87 + const SkIRect& srcRect, SkPicture::EncodeBitmap encoder);
1.88 +
1.89 + /** Copy constructor, used to generate substitutes.
1.90 + * @param image The SkPDFImage to copy.
1.91 + */
1.92 + SkPDFImage(SkPDFImage& pdfImage);
1.93 +
1.94 + // Populate the stream dictionary. This method returns false if
1.95 + // fSubstitute should be used.
1.96 + virtual bool populate(SkPDFCatalog* catalog);
1.97 +
1.98 + typedef SkPDFStream INHERITED;
1.99 +};
1.100 +
1.101 +#endif
