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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 #include "SkPDFCatalog.h" | 10 #include "SkPDFCatalog.h" |
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26 | 26 |
27 SkPDFObject* SkPDFCatalog::addObject(SkPDFObject* obj, bool onFirstPage) { | 27 SkPDFObject* SkPDFCatalog::addObject(SkPDFObject* obj, bool onFirstPage) { |
28 if (findObjectIndex(obj) != -1) { // object already added | 28 if (findObjectIndex(obj) != -1) { // object already added |
29 return obj; | 29 return obj; |
30 } | 30 } |
31 SkASSERT(fNextFirstPageObjNum == 0); | 31 SkASSERT(fNextFirstPageObjNum == 0); |
32 if (onFirstPage) { | 32 if (onFirstPage) { |
33 fFirstPageCount++; | 33 fFirstPageCount++; |
34 } | 34 } |
35 | 35 |
36 struct Rec newEntry(obj, onFirstPage); | 36 Rec newEntry(obj, onFirstPage); |
37 fCatalog.append(1, &newEntry); | 37 fCatalog.append(1, &newEntry); |
38 return obj; | 38 return obj; |
39 } | 39 } |
40 | 40 |
41 void SkPDFCatalog::setFileOffset(SkPDFObject* obj, off_t offset) { | 41 void SkPDFCatalog::setFileOffset(SkPDFObject* obj, off_t offset) { |
42 int objIndex = assignObjNum(obj) - 1; | 42 int objIndex = assignObjNum(obj) - 1; |
43 SkASSERT(fCatalog[objIndex].fObjNumAssigned); | 43 SkASSERT(fCatalog[objIndex].fObjNumAssigned); |
44 SkASSERT(fCatalog[objIndex].fFileOffset == 0); | 44 SkASSERT(fCatalog[objIndex].fFileOffset == 0); |
45 fCatalog[objIndex].fFileOffset = offset; | 45 fCatalog[objIndex].fFileOffset = offset; |
46 } | 46 } |
47 | 47 |
48 void SkPDFCatalog::emitObjectNumber(SkWStream* stream, SkPDFObject* obj) { | 48 int32_t SkPDFCatalog::getObjectNumber(SkPDFObject* obj) { |
49 stream->writeDecAsText(assignObjNum(obj)); | 49 return (int32_t)assignObjNum(obj); |
50 stream->writeText(" 0"); // Generation number is always 0. | |
51 } | 50 } |
52 | 51 |
53 size_t SkPDFCatalog::getObjectNumberSize(SkPDFObject* obj) { | 52 int SkPDFCatalog::findObjectIndex(SkPDFObject* obj) { |
54 SkDynamicMemoryWStream buffer; | |
55 emitObjectNumber(&buffer, obj); | |
56 return buffer.getOffset(); | |
57 } | |
58 | |
59 int SkPDFCatalog::findObjectIndex(SkPDFObject* obj) const { | |
60 for (int i = 0; i < fCatalog.count(); i++) { | 53 for (int i = 0; i < fCatalog.count(); i++) { |
61 if (fCatalog[i].fObject == obj) { | 54 if (fCatalog[i].fObject == obj) { |
62 return i; | 55 return i; |
63 } | 56 } |
64 } | 57 } |
65 // If it's not in the main array, check if it's a substitute object. | 58 // If it's not in the main array, check if it's a substitute object. |
66 for (int i = 0; i < fSubstituteMap.count(); ++i) { | 59 for (int i = 0; i < fSubstituteMap.count(); ++i) { |
67 if (fSubstituteMap[i].fSubstitute == obj) { | 60 if (fSubstituteMap[i].fSubstitute == obj) { |
68 return findObjectIndex(fSubstituteMap[i].fOriginal); | 61 return findObjectIndex(fSubstituteMap[i].fOriginal); |
69 } | 62 } |
70 } | 63 } |
71 return -1; | 64 Rec newEntry(obj, false); |
| 65 fCatalog.append(1, &newEntry); |
| 66 return fCatalog.count() - 1; |
72 } | 67 } |
73 | 68 |
74 int SkPDFCatalog::assignObjNum(SkPDFObject* obj) { | 69 int SkPDFCatalog::assignObjNum(SkPDFObject* obj) { |
75 int pos = findObjectIndex(obj); | 70 int pos = findObjectIndex(obj); |
76 // If this assert fails, it means you probably forgot to add an object | 71 // If this assert fails, it means you probably forgot to add an object |
77 // to the resource list. | 72 // to the resource list. |
78 SkASSERT(pos >= 0); | 73 SkASSERT(pos >= 0); |
79 uint32_t currentIndex = pos; | 74 uint32_t currentIndex = pos; |
80 if (fCatalog[currentIndex].fObjNumAssigned) { | 75 if (fCatalog[currentIndex].fObjNumAssigned) { |
81 return currentIndex + 1; | 76 return currentIndex + 1; |
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143 #if defined(SK_DEBUG) | 138 #if defined(SK_DEBUG) |
144 // Sanity check: is the original already in substitute list? | 139 // Sanity check: is the original already in substitute list? |
145 for (int i = 0; i < fSubstituteMap.count(); ++i) { | 140 for (int i = 0; i < fSubstituteMap.count(); ++i) { |
146 if (original == fSubstituteMap[i].fSubstitute || | 141 if (original == fSubstituteMap[i].fSubstitute || |
147 original == fSubstituteMap[i].fOriginal) { | 142 original == fSubstituteMap[i].fOriginal) { |
148 SkASSERT(false); | 143 SkASSERT(false); |
149 return; | 144 return; |
150 } | 145 } |
151 } | 146 } |
152 #endif | 147 #endif |
153 // Check if the original is on first page. | |
154 bool onFirstPage = false; | |
155 for (int i = 0; i < fCatalog.count(); ++i) { | |
156 if (fCatalog[i].fObject == original) { | |
157 onFirstPage = fCatalog[i].fOnFirstPage; | |
158 break; | |
159 } | |
160 #if defined(SK_DEBUG) | |
161 if (i == fCatalog.count() - 1) { | |
162 SkASSERT(false); // original not in catalog | |
163 return; | |
164 } | |
165 #endif | |
166 } | |
167 | |
168 SubstituteMapping newMapping(original, substitute); | 148 SubstituteMapping newMapping(original, substitute); |
169 fSubstituteMap.append(1, &newMapping); | 149 fSubstituteMap.append(1, &newMapping); |
170 | |
171 // Add resource objects of substitute object to catalog. | |
172 SkTSet<SkPDFObject*>* targetSet = getSubstituteList(onFirstPage); | |
173 SkTSet<SkPDFObject*> newResourceObjects; | |
174 newMapping.fSubstitute->getResources(*targetSet, &newResourceObjects); | |
175 for (int i = 0; i < newResourceObjects.count(); ++i) { | |
176 addObject(newResourceObjects[i], onFirstPage); | |
177 } | |
178 // mergeInto returns the number of duplicates. | |
179 // If there are duplicates, there is a bug and we mess ref counting. | |
180 SkDEBUGCODE(int duplicates =) targetSet->mergeInto(newResourceObjects); | |
181 SkASSERT(duplicates == 0); | |
182 } | 150 } |
183 | 151 |
184 SkPDFObject* SkPDFCatalog::getSubstituteObject(SkPDFObject* object) { | 152 SkPDFObject* SkPDFCatalog::getSubstituteObject(SkPDFObject* object) { |
185 for (int i = 0; i < fSubstituteMap.count(); ++i) { | 153 for (int i = 0; i < fSubstituteMap.count(); ++i) { |
186 if (object == fSubstituteMap[i].fOriginal) { | 154 if (object == fSubstituteMap[i].fOriginal) { |
187 return fSubstituteMap[i].fSubstitute; | 155 return fSubstituteMap[i].fSubstitute; |
188 } | 156 } |
189 } | 157 } |
190 return object; | 158 return object; |
191 } | 159 } |
192 | 160 |
193 SkTSet<SkPDFObject*>* SkPDFCatalog::getSubstituteList(bool firstPage) { | |
194 return firstPage ? &fSubstituteResourcesFirstPage : | |
195 &fSubstituteResourcesRemaining; | |
196 } | |
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