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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2010 The Android Open Source Project | 3 * Copyright 2010 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #ifndef SkPDFPage_DEFINED | 10 #ifndef SkPDFPage_DEFINED |
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29 public: | 29 public: |
30 /** Create a PDF page with the passed PDF device. The device need not | 30 /** Create a PDF page with the passed PDF device. The device need not |
31 * have content on it yet. | 31 * have content on it yet. |
32 * @param content The page content. | 32 * @param content The page content. |
33 */ | 33 */ |
34 explicit SkPDFPage(const SkPDFDevice* content); | 34 explicit SkPDFPage(const SkPDFDevice* content); |
35 ~SkPDFPage(); | 35 ~SkPDFPage(); |
36 | 36 |
37 /** Before a page and its contents can be sized and emitted, it must | 37 /** Before a page and its contents can be sized and emitted, it must |
38 * be finalized. No changes to the PDFDevice will be honored after | 38 * be finalized. No changes to the PDFDevice will be honored after |
39 * finalizePage has been called. This function adds the page content | 39 * finalizePage has been called. |
40 * to the passed catalog, so it must be called for each document | |
41 * that the page is part of. | |
42 * @param catalog The catalog to add page content objects to. | |
43 * @param firstPage Indicate if this is the first page of a document. | |
44 * @param newResourceObjects All the resource objects (recursively) used on | |
45 * the page are added to this array. This gives | |
46 * the caller a chance to deduplicate resources | |
47 * across pages. | |
48 * @param knownResourceObjects The set of resources to be ignored. | |
49 */ | 40 */ |
50 void finalizePage(SkPDFCatalog* catalog, bool firstPage, | 41 void finalizePage(); |
51 const SkTSet<SkPDFObject*>& knownResourceObjects, | |
52 SkTSet<SkPDFObject*>* newResourceObjects); | |
53 | 42 |
54 /** Add destinations for this page to the supplied dictionary. | 43 /** Add destinations for this page to the supplied dictionary. |
55 * @param dict Dictionary to add destinations to. | 44 * @param dict Dictionary to add destinations to. |
56 */ | 45 */ |
57 void appendDestinations(SkPDFDict* dict); | 46 void appendDestinations(SkPDFDict* dict); |
58 | 47 |
59 /** Generate a page tree for the passed vector of pages. New objects are | 48 /** Generate a page tree for the passed vector of pages. New objects are |
60 * added to the catalog. The pageTree vector is populated with all of | 49 * added to the catalog. The pageTree vector is populated with all of |
61 * the 'Pages' dictionaries as well as the 'Page' objects. Page trees | 50 * the 'Pages' dictionaries as well as the 'Page' objects. Page trees |
62 * have both parent and children links, creating reference cycles, so | 51 * have both parent and children links, creating reference cycles, so |
63 * it must be torn down explicitly. The first page is not added to | 52 * it must be torn down explicitly. The first page is not added to |
64 * the pageTree dictionary array so the caller can handle it specially. | 53 * the pageTree dictionary array so the caller can handle it specially. |
65 * @param pages The ordered vector of page objects. | 54 * @param pages The ordered vector of page objects. |
66 * @param catalog The catalog to add new objects into. | |
67 * @param pageTree An output vector with all of the internal and leaf | 55 * @param pageTree An output vector with all of the internal and leaf |
68 * nodes of the pageTree. | 56 * nodes of the pageTree. |
69 * @param rootNode An output parameter set to the root node. | 57 * @param rootNode An output parameter set to the root node. |
70 */ | 58 */ |
71 static void GeneratePageTree(const SkTDArray<SkPDFPage*>& pages, | 59 static void GeneratePageTree(const SkTDArray<SkPDFPage*>& pages, |
72 SkPDFCatalog* catalog, | |
73 SkTDArray<SkPDFDict*>* pageTree, | 60 SkTDArray<SkPDFDict*>* pageTree, |
74 SkPDFDict** rootNode); | 61 SkPDFDict** rootNode); |
75 | 62 |
76 /** Get the fonts used on this page. | 63 /** Get the fonts used on this page. |
77 */ | 64 */ |
78 const SkTDArray<SkPDFFont*>& getFontResources() const; | 65 const SkTDArray<SkPDFFont*>& getFontResources() const; |
79 | 66 |
80 /** Returns a SkPDFGlyphSetMap which represents glyph usage of every font | 67 /** Returns a SkPDFGlyphSetMap which represents glyph usage of every font |
81 * that shows on this page. | 68 * that shows on this page. |
82 */ | 69 */ |
83 const SkPDFGlyphSetMap& getFontGlyphUsage() const; | 70 const SkPDFGlyphSetMap& getFontGlyphUsage() const; |
84 | 71 |
85 SkPDFObject* getContentStream() const; | 72 SkPDFObject* getContentStream() const; |
86 | 73 |
87 private: | 74 private: |
88 // Multiple pages may reference the content. | 75 // Multiple pages may reference the content. |
89 SkAutoTUnref<const SkPDFDevice> fDevice; | 76 SkAutoTUnref<const SkPDFDevice> fDevice; |
90 | 77 |
91 // Once the content is finalized, put it into a stream for output. | 78 // Once the content is finalized, put it into a stream for output. |
92 SkAutoTUnref<SkPDFStream> fContentStream; | 79 SkAutoTUnref<SkPDFStream> fContentStream; |
93 typedef SkPDFDict INHERITED; | 80 typedef SkPDFDict INHERITED; |
94 }; | 81 }; |
95 | 82 |
96 #endif | 83 #endif |
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