bd960c7f19
Compute font stats in SkPDFDocument in order to make more of the headers private. Previous review: https://codereview.appspot.com/5865048/ Review URL: https://codereview.appspot.com/5868049 git-svn-id: http://skia.googlecode.com/svn/trunk@3457 2bbb7eff-a529-9590-31e7-b0007b416f81
102 lines
3.0 KiB
C++
102 lines
3.0 KiB
C++
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/*
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* Copyright 2010 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkPDFDocument_DEFINED
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#define SkPDFDocument_DEFINED
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#include "SkAdvancedTypefaceMetrics.h"
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#include "SkRefCnt.h"
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#include "SkTDArray.h"
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#include "SkTScopedPtr.h"
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class SkPDFCatalog;
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class SkPDFDevice;
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class SkPDFDict;
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class SkPDFPage;
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class SkPDFObject;
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class SkWStream;
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/** \class SkPDFDocument
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A SkPDFDocument assembles pages together and generates the final PDF file.
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*/
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class SkPDFDocument {
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public:
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enum Flags {
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kNoCompression_Flag = 0x01, //!< mask disable stream compression.
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kNoEmbedding_Flag = 0x02, //!< mask do not embed fonts.
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kDraftMode_Flags = 0x03,
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};
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/** Create a PDF document.
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*/
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explicit SK_API SkPDFDocument(Flags flags = (Flags)0);
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SK_API ~SkPDFDocument();
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/** Output the PDF to the passed stream. It is an error to call this (it
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* will return false and not modify stream) if no pages have been added
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* or there are pages missing (i.e. page 1 and 3 have been added, but not
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* page 2).
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*
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* @param stream The writable output stream to send the PDF to.
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*/
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SK_API bool emitPDF(SkWStream* stream);
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/** Sets the specific page to the passed PDF device. If the specified
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* page is already set, this overrides it. Returns true if successful.
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* Will fail if the document has already been emitted.
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*
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* @param pageNumber The position to add the passed device (1 based).
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* @param pdfDevice The page to add to this document.
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*/
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SK_API bool setPage(int pageNumber, SkPDFDevice* pdfDevice);
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/** Append the passed pdf device to the document as a new page. Returns
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* true if successful. Will fail if the document has already been emitted.
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*
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* @param pdfDevice The page to add to this document.
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*/
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SK_API bool appendPage(SkPDFDevice* pdfDevice);
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/** Get the count of unique font types used in the document.
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*/
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SK_API void getCountOfFontTypes(
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int counts[SkAdvancedTypefaceMetrics::kNotEmbeddable_Font + 1]) const;
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private:
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SkTScopedPtr<SkPDFCatalog> fCatalog;
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int64_t fXRefFileOffset;
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SkTDArray<SkPDFPage*> fPages;
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SkTDArray<SkPDFDict*> fPageTree;
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SkRefPtr<SkPDFDict> fDocCatalog;
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SkTDArray<SkPDFObject*> fPageResources;
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SkTDArray<SkPDFObject*> fSubstitutes;
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int fSecondPageFirstResourceIndex;
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SkRefPtr<SkPDFDict> fTrailerDict;
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/** Output the PDF header to the passed stream.
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* @param stream The writable output stream to send the header to.
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*/
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void emitHeader(SkWStream* stream);
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/** Get the size of the header.
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*/
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size_t headerSize();
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/** Output the PDF footer to the passed stream.
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* @param stream The writable output stream to send the footer to.
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* @param objCount The number of objects in the PDF.
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*/
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void emitFooter(SkWStream* stream, int64_t objCount);
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};
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#endif
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