421d6443fb
There are a lot of small pieces to make this change work: - SkPDFDocument (and SkPDFCatalog) take flags to disable compression (and font embedding - not implemented yet, can disable font subsetting for now). - SkPDFStream now defers compression until the size/emit step. - Classes that *had* a stream (because they didn't know the stream size at construction time) now *are* streams to make the substitution work correctly. - The SkPDFShader implementation got pulled apart into two classes, one that is a SkPDFDict, and one that is a SkPDFStream (making the common ancestor SkPDFObject). - Added helper methods in SkPDFObject for children that have simple resource lists. - Added an iterator to SkPDFDict so that a substitute SkPDFStream can get a copy of the stream dictionary. - Change SkPDFDocument to have a pointer to an SkPDFCatalog to remove a new circular header reference. Review URL: http://codereview.appspot.com/4700045 git-svn-id: http://skia.googlecode.com/svn/trunk@1911 2bbb7eff-a529-9590-31e7-b0007b416f81
78 lines
2.7 KiB
C++
78 lines
2.7 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SkPDFImage_DEFINED
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#define SkPDFImage_DEFINED
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#include "SkPDFStream.h"
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#include "SkPDFTypes.h"
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#include "SkRefCnt.h"
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class SkBitmap;
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class SkPaint;
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class SkPDFCatalog;
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struct SkIRect;
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/** \class SkPDFImage
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An image XObject.
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*/
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// We could play the same trick here as is done in SkPDFGraphicState, storing
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// a copy of the Bitmap object (not the pixels), the pixel generation number,
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// and settings used from the paint to canonicalize image objects.
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class SkPDFImage : public SkPDFStream {
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public:
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/** Create a new Image XObject to represent the passed bitmap.
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* @param bitmap The image to encode.
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* @param srcRect The rectangle to cut out of bitmap.
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* @param paint Used to calculate alpha, masks, etc.
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* @return The image XObject or NUll if there is nothing to draw for
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* the given parameters.
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*/
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static SkPDFImage* CreateImage(const SkBitmap& bitmap,
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const SkIRect& srcRect,
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const SkPaint& paint);
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virtual ~SkPDFImage();
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/** Add a Soft Mask (alpha or shape channel) to the image. Refs mask.
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* @param mask A gray scale image representing the mask.
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* @return The mask argument is returned.
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*/
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SkPDFImage* addSMask(SkPDFImage* mask);
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// The SkPDFObject interface.
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virtual void getResources(SkTDArray<SkPDFObject*>* resourceList);
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private:
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SkTDArray<SkPDFObject*> fResources;
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/** Create a PDF image XObject. Entries for the image properties are
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* automatically added to the stream dictionary.
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* @param imageData The final raw bits representing the image.
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* @param bitmap The image parameters to use (Config, etc).
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* @param srcRect The clipping applied to bitmap before generating
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* imageData.
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* @param alpha Is this the alpha channel of the bitmap.
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* @param paint Used to calculate alpha, masks, etc.
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*/
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SkPDFImage(SkStream* imageData, const SkBitmap& bitmap,
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const SkIRect& srcRect, bool alpha, const SkPaint& paint);
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};
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#endif
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