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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 SkPDFDocument_DEFINED
#define SkPDFDocument_DEFINED
#include "SkAdvancedTypefaceMetrics.h"
#include "SkRefCnt.h"
#include "SkTDArray.h"
#include "SkTScopedPtr.h"
class SkPDFCatalog;
class SkPDFDevice;
class SkPDFDict;
class SkPDFPage;
class SkPDFObject;
class SkWStream;
/** \class SkPDFDocument
A SkPDFDocument assembles pages together and generates the final PDF file.
*/
class SkPDFDocument {
public:
enum Flags {
kNoCompression_Flags = 0x01, //!< mask disable stream compression.
kNoLinks_Flags = 0x02, //!< do not honor link annotations.
kDraftMode_Flags = 0x01,
};
/** Create a PDF document.
*/
explicit SK_API SkPDFDocument(Flags flags = (Flags)0);
SK_API ~SkPDFDocument();
/** Output the PDF to the passed stream. It is an error to call this (it
* will return false and not modify stream) if no pages have been added
* or there are pages missing (i.e. page 1 and 3 have been added, but not
* page 2).
*
* @param stream The writable output stream to send the PDF to.
*/
SK_API bool emitPDF(SkWStream* stream);
/** Sets the specific page to the passed PDF device. If the specified
* page is already set, this overrides it. Returns true if successful.
* Will fail if the document has already been emitted.
*
* @param pageNumber The position to add the passed device (1 based).
* @param pdfDevice The page to add to this document.
*/
SK_API bool setPage(int pageNumber, SkPDFDevice* pdfDevice);
/** Append the passed pdf device to the document as a new page. Returns
* true if successful. Will fail if the document has already been emitted.
*
* @param pdfDevice The page to add to this document.
*/
SK_API bool appendPage(SkPDFDevice* pdfDevice);
/** Get the count of unique font types used in the document.
*/
SK_API void getCountOfFontTypes(
int counts[SkAdvancedTypefaceMetrics::kNotEmbeddable_Font + 1]) const;
private:
SkTScopedPtr<SkPDFCatalog> fCatalog;
int64_t fXRefFileOffset;
SkTDArray<SkPDFPage*> fPages;
SkTDArray<SkPDFDict*> fPageTree;
SkPDFDict* fDocCatalog;
SkTDArray<SkPDFObject*> fPageResources;
SkTDArray<SkPDFObject*> fSubstitutes;
int fSecondPageFirstResourceIndex;
SkPDFDict* fTrailerDict;
/** Output the PDF header to the passed stream.
* @param stream The writable output stream to send the header to.
*/
void emitHeader(SkWStream* stream);
/** Get the size of the header.
*/
size_t headerSize();
/** Output the PDF footer to the passed stream.
* @param stream The writable output stream to send the footer to.
* @param objCount The number of objects in the PDF.
*/
void emitFooter(SkWStream* stream, int64_t objCount);
};
#endif
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