gfx/skia/trunk/src/pdf/SkPDFCatalog.h@129ffea94266 (annotated)
gfx/skia/trunk/src/pdf/SkPDFCatalog.h
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
| michael@0 | 1 | |
| michael@0 | 2 | /* |
| michael@0 | 3 | * Copyright 2010 The Android Open Source Project |
| michael@0 | 4 | * |
| michael@0 | 5 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 6 | * found in the LICENSE file. |
| michael@0 | 7 | */ |
| michael@0 | 8 | |
| michael@0 | 9 | |
| michael@0 | 10 | #ifndef SkPDFCatalog_DEFINED |
| michael@0 | 11 | #define SkPDFCatalog_DEFINED |
| michael@0 | 12 | |
| michael@0 | 13 | #include <sys/types.h> |
| michael@0 | 14 | |
| michael@0 | 15 | #include "SkPDFDocument.h" |
| michael@0 | 16 | #include "SkPDFTypes.h" |
| michael@0 | 17 | #include "SkRefCnt.h" |
| michael@0 | 18 | #include "SkTDArray.h" |
| michael@0 | 19 | |
| michael@0 | 20 | /** \class SkPDFCatalog |
| michael@0 | 21 | |
| michael@0 | 22 | The PDF catalog manages object numbers and file offsets. It is used |
| michael@0 | 23 | to create the PDF cross reference table. |
| michael@0 | 24 | */ |
| michael@0 | 25 | class SkPDFCatalog { |
| michael@0 | 26 | public: |
| michael@0 | 27 | /** Create a PDF catalog. |
| michael@0 | 28 | */ |
| michael@0 | 29 | explicit SkPDFCatalog(SkPDFDocument::Flags flags); |
| michael@0 | 30 | ~SkPDFCatalog(); |
| michael@0 | 31 | |
| michael@0 | 32 | /** Add the passed object to the catalog. Refs obj. |
| michael@0 | 33 | * @param obj The object to add. |
| michael@0 | 34 | * @param onFirstPage Is the object on the first page. |
| michael@0 | 35 | * @return The obj argument is returned. |
| michael@0 | 36 | */ |
| michael@0 | 37 | SkPDFObject* addObject(SkPDFObject* obj, bool onFirstPage); |
| michael@0 | 38 | |
| michael@0 | 39 | /** Inform the catalog of the object's position in the final stream. |
| michael@0 | 40 | * The object should already have been added to the catalog. Returns |
| michael@0 | 41 | * the object's size. |
| michael@0 | 42 | * @param obj The object to add. |
| michael@0 | 43 | * @param offset The byte offset in the output stream of this object. |
| michael@0 | 44 | */ |
| michael@0 | 45 | size_t setFileOffset(SkPDFObject* obj, off_t offset); |
| michael@0 | 46 | |
| michael@0 | 47 | /** Output the object number for the passed object. |
| michael@0 | 48 | * @param obj The object of interest. |
| michael@0 | 49 | * @param stream The writable output stream to send the output to. |
| michael@0 | 50 | */ |
| michael@0 | 51 | void emitObjectNumber(SkWStream* stream, SkPDFObject* obj); |
| michael@0 | 52 | |
| michael@0 | 53 | /** Return the number of bytes that would be emitted for the passed |
| michael@0 | 54 | * object's object number. |
| michael@0 | 55 | * @param obj The object of interest |
| michael@0 | 56 | */ |
| michael@0 | 57 | size_t getObjectNumberSize(SkPDFObject* obj); |
| michael@0 | 58 | |
| michael@0 | 59 | /** Return the document flags in effect for this catalog/document. |
| michael@0 | 60 | */ |
| michael@0 | 61 | SkPDFDocument::Flags getDocumentFlags() const { return fDocumentFlags; } |
| michael@0 | 62 | |
| michael@0 | 63 | /** Output the cross reference table for objects in the catalog. |
| michael@0 | 64 | * Returns the total number of objects. |
| michael@0 | 65 | * @param stream The writable output stream to send the output to. |
| michael@0 | 66 | * @param firstPage If true, include first page objects only, otherwise |
| michael@0 | 67 | * include all objects not on the first page. |
| michael@0 | 68 | */ |
| michael@0 | 69 | int32_t emitXrefTable(SkWStream* stream, bool firstPage); |
| michael@0 | 70 | |
| michael@0 | 71 | /** Set substitute object for the passed object. |
| michael@0 | 72 | */ |
| michael@0 | 73 | void setSubstitute(SkPDFObject* original, SkPDFObject* substitute); |
| michael@0 | 74 | |
| michael@0 | 75 | /** Find and return any substitute object set for the passed object. If |
| michael@0 | 76 | * there is none, return the passed object. |
| michael@0 | 77 | */ |
| michael@0 | 78 | SkPDFObject* getSubstituteObject(SkPDFObject* object); |
| michael@0 | 79 | |
| michael@0 | 80 | /** Set file offsets for the resources of substitute objects. |
| michael@0 | 81 | * @param fileOffset Accumulated offset of current document. |
| michael@0 | 82 | * @param firstPage Indicate whether this is for the first page only. |
| michael@0 | 83 | * @return Total size of resources of substitute objects. |
| michael@0 | 84 | */ |
| michael@0 | 85 | off_t setSubstituteResourcesOffsets(off_t fileOffset, bool firstPage); |
| michael@0 | 86 | |
| michael@0 | 87 | /** Emit the resources of substitute objects. |
| michael@0 | 88 | */ |
| michael@0 | 89 | void emitSubstituteResources(SkWStream* stream, bool firstPage); |
| michael@0 | 90 | |
| michael@0 | 91 | private: |
| michael@0 | 92 | struct Rec { |
| michael@0 | 93 | Rec(SkPDFObject* object, bool onFirstPage) |
| michael@0 | 94 | : fObject(object), |
| michael@0 | 95 | fFileOffset(0), |
| michael@0 | 96 | fObjNumAssigned(false), |
| michael@0 | 97 | fOnFirstPage(onFirstPage) { |
| michael@0 | 98 | } |
| michael@0 | 99 | SkPDFObject* fObject; |
| michael@0 | 100 | off_t fFileOffset; |
| michael@0 | 101 | bool fObjNumAssigned; |
| michael@0 | 102 | bool fOnFirstPage; |
| michael@0 | 103 | }; |
| michael@0 | 104 | |
| michael@0 | 105 | struct SubstituteMapping { |
| michael@0 | 106 | SubstituteMapping(SkPDFObject* original, SkPDFObject* substitute) |
| michael@0 | 107 | : fOriginal(original), fSubstitute(substitute) { |
| michael@0 | 108 | } |
| michael@0 | 109 | SkPDFObject* fOriginal; |
| michael@0 | 110 | SkPDFObject* fSubstitute; |
| michael@0 | 111 | }; |
| michael@0 | 112 | |
| michael@0 | 113 | // TODO(vandebo): Make this a hash if it's a performance problem. |
| michael@0 | 114 | SkTDArray<struct Rec> fCatalog; |
| michael@0 | 115 | |
| michael@0 | 116 | // TODO(arthurhsu): Make this a hash if it's a performance problem. |
| michael@0 | 117 | SkTDArray<SubstituteMapping> fSubstituteMap; |
| michael@0 | 118 | SkTSet<SkPDFObject*> fSubstituteResourcesFirstPage; |
| michael@0 | 119 | SkTSet<SkPDFObject*> fSubstituteResourcesRemaining; |
| michael@0 | 120 | |
| michael@0 | 121 | // Number of objects on the first page. |
| michael@0 | 122 | uint32_t fFirstPageCount; |
| michael@0 | 123 | // Next object number to assign (on page > 1). |
| michael@0 | 124 | uint32_t fNextObjNum; |
| michael@0 | 125 | // Next object number to assign on the first page. |
| michael@0 | 126 | uint32_t fNextFirstPageObjNum; |
| michael@0 | 127 | |
| michael@0 | 128 | SkPDFDocument::Flags fDocumentFlags; |
| michael@0 | 129 | |
| michael@0 | 130 | int findObjectIndex(SkPDFObject* obj) const; |
| michael@0 | 131 | |
| michael@0 | 132 | int assignObjNum(SkPDFObject* obj); |
| michael@0 | 133 | |
| michael@0 | 134 | SkTSet<SkPDFObject*>* getSubstituteList(bool firstPage); |
| michael@0 | 135 | }; |
| michael@0 | 136 | |
| michael@0 | 137 | #endif |
