diff options
Diffstat (limited to 'include/pdf/SkPDFImage.h')
-rw-r--r-- | include/pdf/SkPDFImage.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/include/pdf/SkPDFImage.h b/include/pdf/SkPDFImage.h new file mode 100644 index 0000000..945ff9e --- /dev/null +++ b/include/pdf/SkPDFImage.h @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2010 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef SkPDFImage_DEFINED +#define SkPDFImage_DEFINED + +#include "SkPDFStream.h" +#include "SkPDFTypes.h" +#include "SkRefCnt.h" + +class SkBitmap; +class SkPaint; +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 SkPDFObject { +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, + const SkPaint& paint); + + 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 emitObject(SkWStream* stream, SkPDFCatalog* catalog, + bool indirect); + virtual size_t getOutputSize(SkPDFCatalog* catalog, bool indirect); + virtual void getResources(SkTDArray<SkPDFObject*>* resourceList); + +private: + SkRefPtr<SkPDFStream> fStream; + 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, const SkPaint& paint); + + /** Add the value to the stream dictionary with the given key. Refs value. + * @param key The key for this dictionary entry. + * @param value The value for this dictionary entry. + * @return The value argument is returned. + */ + SkPDFObject* insert(SkPDFName* key, SkPDFObject* value); + + /** Add the value to the stream dictionary with the given key. Refs value. + * @param key The text of the key for this dictionary entry. + * @param value The value for this dictionary entry. + * @return The value argument is returned. + */ + SkPDFObject* insert(const char key[], SkPDFObject* value); +}; + +#endif |