1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SkPDFDocument_DEFINED 18 #define SkPDFDocument_DEFINED 19 20 #include "SkPDFCatalog.h" 21 #include "SkPDFTypes.h" 22 #include "SkRefCnt.h" 23 #include "SkTDArray.h" 24 25 class SkPDFDevice; 26 class SkPDFPage; 27 class SkWSteam; 28 29 /** \class SkPDFDocument 30 31 A SkPDFDocument assembles pages together and generates the final PDF file. 32 */ 33 class SkPDFDocument { 34 public: 35 /** Create a PDF document. 36 */ 37 SK_API SkPDFDocument(); 38 SK_API ~SkPDFDocument(); 39 40 /** Output the PDF to the passed stream. 41 * @param stream The writable output stream to send the PDF to. 42 */ 43 SK_API bool emitPDF(SkWStream* stream); 44 45 /** Append the passed pdf device to the document as a new page. Returns 46 * true if successful. Will fail if the document has already been emitted. 47 * 48 * @param pdfDevice The page to add to this document. 49 */ 50 SK_API bool appendPage(const SkRefPtr<SkPDFDevice>& pdfDevice); 51 52 /** Get the list of pages in this document. 53 */ 54 SK_API const SkTDArray<SkPDFPage*>& getPages(); 55 56 private: 57 SkPDFCatalog fCatalog; 58 int64_t fXRefFileOffset; 59 60 SkTDArray<SkPDFPage*> fPages; 61 SkTDArray<SkPDFDict*> fPageTree; 62 SkRefPtr<SkPDFDict> fDocCatalog; 63 SkTDArray<SkPDFObject*> fPageResources; 64 int fSecondPageFirstResourceIndex; 65 66 SkRefPtr<SkPDFDict> fTrailerDict; 67 68 /** Output the PDF header to the passed stream. 69 * @param stream The writable output stream to send the header to. 70 */ 71 void emitHeader(SkWStream* stream); 72 73 /** Get the size of the header. 74 */ 75 size_t headerSize(); 76 77 /** Output the PDF footer to the passed stream. 78 * @param stream The writable output stream to send the footer to. 79 * @param objCount The number of objects in the PDF. 80 */ 81 void emitFooter(SkWStream* stream, int64_t objCount); 82 }; 83 84 #endif 85