SkPDFDocument.cpp revision cc77c12293d1685f5e83d768b30ca9157af1576d
199ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com/* 2a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary * Copyright 2011 Google Inc. 399ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com * 499ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com * Use of this source code is governed by a BSD-style license that can be 599ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com * found in the LICENSE file. 699ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com */ 799ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com 8a1f1ee98a1f6d0770f6243270ca2f0e6c92efabahalcanary#include "SkPDFCanon.h" 966be626f7f3ddda243e51aa8f36398b26769a9b4halcanary#include "SkPDFCanvas.h" 105867736b08d3689356b49f505bcf748c2194a0bcreed#include "SkPDFDevice.h" 1123f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary#include "SkPDFDocument.h" 12a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary#include "SkPDFFont.h" 132f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary#include "SkPDFStream.h" 14f12a1673f024d30d30f06b9f88b5cc072b8a2d1ehalcanary#include "SkPDFUtils.h" 15a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary#include "SkStream.h" 16f12a1673f024d30d30f06b9f88b5cc072b8a2d1ehalcanary 1750e82e61766d22da5238905916a8abc3e6664060halcanary 1850e82e61766d22da5238905916a8abc3e6664060halcanarySkPDFObjectSerializer::SkPDFObjectSerializer() : fBaseOffset(0), fNextToBeSerialized(0) {} 1950e82e61766d22da5238905916a8abc3e6664060halcanary 2050e82e61766d22da5238905916a8abc3e6664060halcanarytemplate <class T> static void renew(T* t) { t->~T(); new (t) T; } 2150e82e61766d22da5238905916a8abc3e6664060halcanary 2250e82e61766d22da5238905916a8abc3e6664060halcanaryvoid SkPDFObjectSerializer::addObjectRecursively(const sk_sp<SkPDFObject>& object) { 2350e82e61766d22da5238905916a8abc3e6664060halcanary fObjNumMap.addObjectRecursively(object.get(), fSubstituteMap); 24a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary} 25a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary 2650e82e61766d22da5238905916a8abc3e6664060halcanaryvoid SkPDFObjectSerializer::serializeHeader(SkWStream* wStream, const SkPDFMetadata& md) { 2750e82e61766d22da5238905916a8abc3e6664060halcanary fBaseOffset = wStream->bytesWritten(); 2850e82e61766d22da5238905916a8abc3e6664060halcanary static const char kHeader[] = "%PDF-1.4\n%\xE1\xE9\xEB\xD3\n"; 2950e82e61766d22da5238905916a8abc3e6664060halcanary wStream->write(kHeader, strlen(kHeader)); 3050e82e61766d22da5238905916a8abc3e6664060halcanary // The PDF spec recommends including a comment with four 3150e82e61766d22da5238905916a8abc3e6664060halcanary // bytes, all with their high bits set. "\xD3\xEB\xE9\xE1" is 3250e82e61766d22da5238905916a8abc3e6664060halcanary // "Skia" with the high bits set. 3350e82e61766d22da5238905916a8abc3e6664060halcanary fInfoDict.reset(md.createDocumentInformationDict()); 3450e82e61766d22da5238905916a8abc3e6664060halcanary this->addObjectRecursively(fInfoDict); 3550e82e61766d22da5238905916a8abc3e6664060halcanary this->serializeObjects(wStream); 3650e82e61766d22da5238905916a8abc3e6664060halcanary} 3750e82e61766d22da5238905916a8abc3e6664060halcanary 3850e82e61766d22da5238905916a8abc3e6664060halcanary// Serialize all objects in the fObjNumMap that have not yet been serialized; 3950e82e61766d22da5238905916a8abc3e6664060halcanaryvoid SkPDFObjectSerializer::serializeObjects(SkWStream* wStream) { 4050e82e61766d22da5238905916a8abc3e6664060halcanary const SkTArray<sk_sp<SkPDFObject>>& objects = fObjNumMap.objects(); 4150e82e61766d22da5238905916a8abc3e6664060halcanary while (fNextToBeSerialized < objects.count()) { 4250e82e61766d22da5238905916a8abc3e6664060halcanary SkPDFObject* object = objects[fNextToBeSerialized].get(); 4350e82e61766d22da5238905916a8abc3e6664060halcanary int32_t index = fNextToBeSerialized + 1; // Skip object 0. 4450e82e61766d22da5238905916a8abc3e6664060halcanary // "The first entry in the [XREF] table (object number 0) is 4550e82e61766d22da5238905916a8abc3e6664060halcanary // always free and has a generation number of 65,535; it is 4650e82e61766d22da5238905916a8abc3e6664060halcanary // the head of the linked list of free objects." 4750e82e61766d22da5238905916a8abc3e6664060halcanary SkASSERT(fOffsets.count() == fNextToBeSerialized); 4850e82e61766d22da5238905916a8abc3e6664060halcanary fOffsets.push(this->offset(wStream)); 4950e82e61766d22da5238905916a8abc3e6664060halcanary SkASSERT(object == fSubstituteMap.getSubstitute(object)); 5050e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeDecAsText(index); 5150e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeText(" 0 obj\n"); // Generation number is always 0. 5250e82e61766d22da5238905916a8abc3e6664060halcanary object->emitObject(wStream, fObjNumMap, fSubstituteMap); 5350e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeText("\nendobj\n"); 5450e82e61766d22da5238905916a8abc3e6664060halcanary object->drop(); 5550e82e61766d22da5238905916a8abc3e6664060halcanary ++fNextToBeSerialized; 5650e82e61766d22da5238905916a8abc3e6664060halcanary } 5750e82e61766d22da5238905916a8abc3e6664060halcanary} 5850e82e61766d22da5238905916a8abc3e6664060halcanary 5950e82e61766d22da5238905916a8abc3e6664060halcanary// Xref table and footer 6050e82e61766d22da5238905916a8abc3e6664060halcanaryvoid SkPDFObjectSerializer::serializeFooter(SkWStream* wStream, 6150e82e61766d22da5238905916a8abc3e6664060halcanary const sk_sp<SkPDFObject> docCatalog, 6250e82e61766d22da5238905916a8abc3e6664060halcanary sk_sp<SkPDFObject> id) { 6350e82e61766d22da5238905916a8abc3e6664060halcanary this->serializeObjects(wStream); 6450e82e61766d22da5238905916a8abc3e6664060halcanary int32_t xRefFileOffset = this->offset(wStream); 6550e82e61766d22da5238905916a8abc3e6664060halcanary // Include the special zeroth object in the count. 6650e82e61766d22da5238905916a8abc3e6664060halcanary int32_t objCount = SkToS32(fOffsets.count() + 1); 6750e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeText("xref\n0 "); 6850e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeDecAsText(objCount); 6950e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeText("\n0000000000 65535 f \n"); 7050e82e61766d22da5238905916a8abc3e6664060halcanary for (int i = 0; i < fOffsets.count(); i++) { 7150e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeBigDecAsText(fOffsets[i], 10); 7250e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeText(" 00000 n \n"); 7350e82e61766d22da5238905916a8abc3e6664060halcanary } 74a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary SkPDFDict trailerDict; 7550e82e61766d22da5238905916a8abc3e6664060halcanary trailerDict.insertInt("Size", objCount); 7650e82e61766d22da5238905916a8abc3e6664060halcanary SkASSERT(docCatalog); 7750e82e61766d22da5238905916a8abc3e6664060halcanary trailerDict.insertObjRef("Root", docCatalog); 7850e82e61766d22da5238905916a8abc3e6664060halcanary SkASSERT(fInfoDict); 7950e82e61766d22da5238905916a8abc3e6664060halcanary trailerDict.insertObjRef("Info", std::move(fInfoDict)); 8034422610ac22adceeabb66023120f27b96cae953halcanary if (id) { 818103a34300c5de2e85793a96c4738a33fc6eb46dhalcanary trailerDict.insertObject("ID", std::move(id)); 8234422610ac22adceeabb66023120f27b96cae953halcanary } 8350e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeText("trailer\n"); 8450e82e61766d22da5238905916a8abc3e6664060halcanary trailerDict.emitObject(wStream, fObjNumMap, fSubstituteMap); 8550e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeText("\nstartxref\n"); 8650e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeBigDecAsText(xRefFileOffset); 8750e82e61766d22da5238905916a8abc3e6664060halcanary wStream->writeText("\n%%EOF"); 8850e82e61766d22da5238905916a8abc3e6664060halcanary} 8950e82e61766d22da5238905916a8abc3e6664060halcanary 9050e82e61766d22da5238905916a8abc3e6664060halcanaryint32_t SkPDFObjectSerializer::offset(SkWStream* wStream) { 9150e82e61766d22da5238905916a8abc3e6664060halcanary size_t offset = wStream->bytesWritten(); 9250e82e61766d22da5238905916a8abc3e6664060halcanary SkASSERT(offset > fBaseOffset); 9350e82e61766d22da5238905916a8abc3e6664060halcanary return SkToS32(offset - fBaseOffset); 94a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary} 95a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary 962f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary 978103a34300c5de2e85793a96c4738a33fc6eb46dhalcanary// return root node. 98cc77c12293d1685f5e83d768b30ca9157af1576dhalcanarystatic sk_sp<SkPDFDict> generate_page_tree(SkTArray<sk_sp<SkPDFDict>>* pages) { 992f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // PDF wants a tree describing all the pages in the document. We arbitrary 1002f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // choose 8 (kNodeSize) as the number of allowed children. The internal 1012f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // nodes have type "Pages" with an array of children, a parent pointer, and 1022f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // the number of leaves below the node as "Count." The leaves are passed 1032f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // into the method, have type "Page" and need a parent pointer. This method 1042f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // builds the tree bottom up, skipping internal nodes that would have only 1052f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // one child. 1062f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary static const int kNodeSize = 8; 1072f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary 1082f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // curNodes takes a reference to its items, which it passes to pageTree. 109cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary int totalPageCount = pages->count(); 110cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary SkTArray<sk_sp<SkPDFDict>> curNodes; 111cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary curNodes.swap(pages); 1122f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary 1132f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // nextRoundNodes passes its references to nodes on to curNodes. 1142f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary int treeCapacity = kNodeSize; 1152f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary do { 116cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary SkTArray<sk_sp<SkPDFDict>> nextRoundNodes; 1172f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary for (int i = 0; i < curNodes.count(); ) { 1182f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary if (i > 0 && i + 1 == curNodes.count()) { 119cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary SkASSERT(curNodes[i]); 120cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary nextRoundNodes.emplace_back(std::move(curNodes[i])); 1212f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary break; 1222f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary } 1232f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary 124ece83924384b2e9e8cd422324c44797deb99ec90halcanary auto newNode = sk_make_sp<SkPDFDict>("Pages"); 125ece83924384b2e9e8cd422324c44797deb99ec90halcanary auto kids = sk_make_sp<SkPDFArray>(); 1262f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary kids->reserve(kNodeSize); 1272f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary 1282f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary int count = 0; 1292f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary for (; i < curNodes.count() && count < kNodeSize; i++, count++) { 130cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary SkASSERT(curNodes[i]); 1318103a34300c5de2e85793a96c4738a33fc6eb46dhalcanary curNodes[i]->insertObjRef("Parent", newNode); 132cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary kids->appendObjRef(std::move(curNodes[i])); 1332f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary } 1342f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary 1352f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // treeCapacity is the number of leaf nodes possible for the 1362f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // current set of subtrees being generated. (i.e. 8, 64, 512, ...). 1372f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // It is hard to count the number of leaf nodes in the current 1382f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // subtree. However, by construction, we know that unless it's the 1392f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // last subtree for the current depth, the leaf count will be 1402f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // treeCapacity, otherwise it's what ever is left over after 1412f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary // consuming treeCapacity chunks. 1422f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary int pageCount = treeCapacity; 1432f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary if (i == curNodes.count()) { 144cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary pageCount = ((totalPageCount - 1) % treeCapacity) + 1; 1452f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary } 14672266fd1fe9bfe078239a9d9e85f479faee30281halcanary newNode->insertInt("Count", pageCount); 1478103a34300c5de2e85793a96c4738a33fc6eb46dhalcanary newNode->insertObject("Kids", std::move(kids)); 148cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary nextRoundNodes.emplace_back(std::move(newNode)); 1492f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary } 150cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary SkDEBUGCODE( for (const auto& n : curNodes) { SkASSERT(!n); } ); 1512f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary 152cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary curNodes.swap(&nextRoundNodes); 153cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary nextRoundNodes.reset(); 1542f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary treeCapacity *= kNodeSize; 1552f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary } while (curNodes.count() > 1); 156cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary return std::move(curNodes[0]); 1572f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary} 1582f7ebcb424cd1d1acf07478157f86b0a3eafd712halcanary 159a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary#if 0 160a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary// TODO(halcanary): expose notEmbeddableCount in SkDocument 161a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanaryvoid GetCountOfFontTypes( 162a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary const SkTDArray<SkPDFDevice*>& pageDevices, 163a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary int counts[SkAdvancedTypefaceMetrics::kOther_Font + 1], 164a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary int* notSubsettableCount, 165a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary int* notEmbeddableCount) { 166a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary sk_bzero(counts, sizeof(int) * 167a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary (SkAdvancedTypefaceMetrics::kOther_Font + 1)); 168a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary SkTDArray<SkFontID> seenFonts; 169a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary int notSubsettable = 0; 170a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary int notEmbeddable = 0; 171a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary 172a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary for (int pageNumber = 0; pageNumber < pageDevices.count(); pageNumber++) { 173a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary const SkTDArray<SkPDFFont*>& fontResources = 174a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary pageDevices[pageNumber]->getFontResources(); 175a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary for (int font = 0; font < fontResources.count(); font++) { 176a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary SkFontID fontID = fontResources[font]->typeface()->uniqueID(); 177a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary if (seenFonts.find(fontID) == -1) { 178a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary counts[fontResources[font]->getType()]++; 179a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary seenFonts.push(fontID); 180a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary if (!fontResources[font]->canSubset()) { 181a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary notSubsettable++; 182a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary } 183a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary if (!fontResources[font]->canEmbed()) { 184a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary notEmbeddable++; 185a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary } 186a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary } 187a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary } 188a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary } 189a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary if (notSubsettableCount) { 190a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary *notSubsettableCount = notSubsettable; 191a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary 192a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary } 193a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary if (notEmbeddableCount) { 194a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary *notEmbeddableCount = notEmbeddable; 195a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary } 196a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary} 197a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary#endif 198f12a1673f024d30d30f06b9f88b5cc072b8a2d1ehalcanary 199f12a1673f024d30d30f06b9f88b5cc072b8a2d1ehalcanarytemplate <typename T> static T* clone(const T* o) { return o ? new T(*o) : nullptr; } 200a43b41538ad6af0f2b7742b4ade8265d344b9d64halcanary//////////////////////////////////////////////////////////////////////////////// 20199ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com 20250e82e61766d22da5238905916a8abc3e6664060halcanarySkPDFDocument::SkPDFDocument(SkWStream* stream, 20350e82e61766d22da5238905916a8abc3e6664060halcanary void (*doneProc)(SkWStream*, bool), 20450e82e61766d22da5238905916a8abc3e6664060halcanary SkScalar rasterDpi, 20550e82e61766d22da5238905916a8abc3e6664060halcanary SkPixelSerializer* jpegEncoder) 20650e82e61766d22da5238905916a8abc3e6664060halcanary : SkDocument(stream, doneProc) 20750e82e61766d22da5238905916a8abc3e6664060halcanary , fRasterDpi(rasterDpi) { 20850e82e61766d22da5238905916a8abc3e6664060halcanary fCanon.setPixelSerializer(SkSafeRef(jpegEncoder)); 20950e82e61766d22da5238905916a8abc3e6664060halcanary} 2106319367bdcbf5e5050632ab97973f5035d0dd8faskia.committer@gmail.com 21150e82e61766d22da5238905916a8abc3e6664060halcanarySkPDFDocument::~SkPDFDocument() { 21250e82e61766d22da5238905916a8abc3e6664060halcanary // subclasses of SkDocument must call close() in their destructors. 21350e82e61766d22da5238905916a8abc3e6664060halcanary this->close(); 21450e82e61766d22da5238905916a8abc3e6664060halcanary} 21599ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com 21650e82e61766d22da5238905916a8abc3e6664060halcanaryvoid SkPDFDocument::serialize(const sk_sp<SkPDFObject>& object) { 21750e82e61766d22da5238905916a8abc3e6664060halcanary fObjectSerializer.addObjectRecursively(object); 21850e82e61766d22da5238905916a8abc3e6664060halcanary fObjectSerializer.serializeObjects(this->getStream()); 21950e82e61766d22da5238905916a8abc3e6664060halcanary} 22099ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com 22150e82e61766d22da5238905916a8abc3e6664060halcanarySkCanvas* SkPDFDocument::onBeginPage(SkScalar width, SkScalar height, 22250e82e61766d22da5238905916a8abc3e6664060halcanary const SkRect& trimBox) { 22350e82e61766d22da5238905916a8abc3e6664060halcanary SkASSERT(!fCanvas.get()); // endPage() was called before this. 224cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary if (fPages.empty()) { 22550e82e61766d22da5238905916a8abc3e6664060halcanary // if this is the first page if the document. 22650e82e61766d22da5238905916a8abc3e6664060halcanary fObjectSerializer.serializeHeader(this->getStream(), fMetadata); 227cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary fDests = sk_make_sp<SkPDFDict>(); 22899ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com } 22950e82e61766d22da5238905916a8abc3e6664060halcanary SkISize pageSize = SkISize::Make( 23050e82e61766d22da5238905916a8abc3e6664060halcanary SkScalarRoundToInt(width), SkScalarRoundToInt(height)); 231cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary fPageDevice.reset( 232989da4a32cd6823359f31c971c3b3f31425e905ehalcanary SkPDFDevice::Create(pageSize, fRasterDpi, this)); 233cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary fCanvas = sk_make_sp<SkPDFCanvas>(fPageDevice); 23450e82e61766d22da5238905916a8abc3e6664060halcanary fCanvas->clipRect(trimBox); 23550e82e61766d22da5238905916a8abc3e6664060halcanary fCanvas->translate(trimBox.x(), trimBox.y()); 23650e82e61766d22da5238905916a8abc3e6664060halcanary return fCanvas.get(); 23750e82e61766d22da5238905916a8abc3e6664060halcanary} 23850e82e61766d22da5238905916a8abc3e6664060halcanary 23950e82e61766d22da5238905916a8abc3e6664060halcanaryvoid SkPDFDocument::onEndPage() { 24050e82e61766d22da5238905916a8abc3e6664060halcanary SkASSERT(fCanvas.get()); 24150e82e61766d22da5238905916a8abc3e6664060halcanary fCanvas->flush(); 24250e82e61766d22da5238905916a8abc3e6664060halcanary fCanvas.reset(nullptr); 243cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary SkASSERT(fPageDevice); 244cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary fGlyphUsage.merge(fPageDevice->getFontGlyphUsage()); 245cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary auto page = sk_make_sp<SkPDFDict>("Page"); 246cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary page->insertObject("Resources", fPageDevice->makeResourceDict()); 247cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary page->insertObject("MediaBox", fPageDevice->copyMediaBox()); 248cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary auto annotations = sk_make_sp<SkPDFArray>(); 249cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary fPageDevice->appendAnnotations(annotations.get()); 250cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary if (annotations->size() > 0) { 251cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary page->insertObject("Annots", std::move(annotations)); 252cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary } 253cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary auto contentData = fPageDevice->content(); 254cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary auto contentObject = sk_make_sp<SkPDFStream>(contentData.get()); 255cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary this->serialize(contentObject); 256cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary page->insertObjRef("Contents", std::move(contentObject)); 257cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary fPageDevice->appendDestinations(fDests.get(), page.get()); 258cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary fPages.emplace_back(std::move(page)); 259cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary fPageDevice.reset(nullptr); 26050e82e61766d22da5238905916a8abc3e6664060halcanary} 26150e82e61766d22da5238905916a8abc3e6664060halcanary 26250e82e61766d22da5238905916a8abc3e6664060halcanaryvoid SkPDFDocument::onAbort() { 26350e82e61766d22da5238905916a8abc3e6664060halcanary fCanvas.reset(nullptr); 264cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary fPages.reset(); 26550e82e61766d22da5238905916a8abc3e6664060halcanary fCanon.reset(); 26650e82e61766d22da5238905916a8abc3e6664060halcanary renew(&fObjectSerializer); 26750e82e61766d22da5238905916a8abc3e6664060halcanary} 26899ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com 26950e82e61766d22da5238905916a8abc3e6664060halcanaryvoid SkPDFDocument::setMetadata(const SkDocument::Attribute info[], 27050e82e61766d22da5238905916a8abc3e6664060halcanary int infoCount, 27150e82e61766d22da5238905916a8abc3e6664060halcanary const SkTime::DateTime* creationDate, 27250e82e61766d22da5238905916a8abc3e6664060halcanary const SkTime::DateTime* modifiedDate) { 27350e82e61766d22da5238905916a8abc3e6664060halcanary fMetadata.fInfo.reset(info, infoCount); 27450e82e61766d22da5238905916a8abc3e6664060halcanary fMetadata.fCreation.reset(clone(creationDate)); 27550e82e61766d22da5238905916a8abc3e6664060halcanary fMetadata.fModified.reset(clone(modifiedDate)); 27650e82e61766d22da5238905916a8abc3e6664060halcanary} 27799ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com 27850e82e61766d22da5238905916a8abc3e6664060halcanarybool SkPDFDocument::onClose(SkWStream* stream) { 27950e82e61766d22da5238905916a8abc3e6664060halcanary SkASSERT(!fCanvas.get()); 280cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary if (fPages.empty()) { 281cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary fPages.reset(); 2822e3f9d8a9309686eeb4c76ccfde5800da87a68b3halcanary fCanon.reset(); 28350e82e61766d22da5238905916a8abc3e6664060halcanary renew(&fObjectSerializer); 28450e82e61766d22da5238905916a8abc3e6664060halcanary return false; 285b5a6651f9f69570d964382134d64360915db9a29commit-bot@chromium.org } 28650e82e61766d22da5238905916a8abc3e6664060halcanary auto docCatalog = sk_make_sp<SkPDFDict>("Catalog"); 28750e82e61766d22da5238905916a8abc3e6664060halcanary sk_sp<SkPDFObject> id, xmp; 28850e82e61766d22da5238905916a8abc3e6664060halcanary #ifdef SK_PDF_GENERATE_PDFA 28950e82e61766d22da5238905916a8abc3e6664060halcanary SkPDFMetadata::UUID uuid = metadata.uuid(); 29050e82e61766d22da5238905916a8abc3e6664060halcanary // We use the same UUID for Document ID and Instance ID since this 29150e82e61766d22da5238905916a8abc3e6664060halcanary // is the first revision of this document (and Skia does not 29250e82e61766d22da5238905916a8abc3e6664060halcanary // support revising existing PDF documents). 29350e82e61766d22da5238905916a8abc3e6664060halcanary // If we are not in PDF/A mode, don't use a UUID since testing 29450e82e61766d22da5238905916a8abc3e6664060halcanary // works best with reproducible outputs. 29550e82e61766d22da5238905916a8abc3e6664060halcanary id.reset(SkPDFMetadata::CreatePdfId(uuid, uuid)); 29650e82e61766d22da5238905916a8abc3e6664060halcanary xmp.reset(metadata.createXMPObject(uuid, uuid)); 29750e82e61766d22da5238905916a8abc3e6664060halcanary docCatalog->insertObjRef("Metadata", std::move(xmp)); 29850e82e61766d22da5238905916a8abc3e6664060halcanary 29950e82e61766d22da5238905916a8abc3e6664060halcanary // sRGB is specified by HTML, CSS, and SVG. 30050e82e61766d22da5238905916a8abc3e6664060halcanary auto outputIntent = sk_make_sp<SkPDFDict>("OutputIntent"); 30150e82e61766d22da5238905916a8abc3e6664060halcanary outputIntent->insertName("S", "GTS_PDFA1"); 30250e82e61766d22da5238905916a8abc3e6664060halcanary outputIntent->insertString("RegistryName", "http://www.color.org"); 30350e82e61766d22da5238905916a8abc3e6664060halcanary outputIntent->insertString("OutputConditionIdentifier", 30450e82e61766d22da5238905916a8abc3e6664060halcanary "sRGB IEC61966-2.1"); 30550e82e61766d22da5238905916a8abc3e6664060halcanary auto intentArray = sk_make_sp<SkPDFArray>(); 30650e82e61766d22da5238905916a8abc3e6664060halcanary intentArray->appendObject(std::move(outputIntent)); 30750e82e61766d22da5238905916a8abc3e6664060halcanary // Don't specify OutputIntents if we are not in PDF/A mode since 30850e82e61766d22da5238905916a8abc3e6664060halcanary // no one has ever asked for this feature. 30950e82e61766d22da5238905916a8abc3e6664060halcanary docCatalog->insertObject("OutputIntents", std::move(intentArray)); 31050e82e61766d22da5238905916a8abc3e6664060halcanary #endif 31150e82e61766d22da5238905916a8abc3e6664060halcanary 312cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary docCatalog->insertObjRef("Pages", generate_page_tree(&fPages)); 31350e82e61766d22da5238905916a8abc3e6664060halcanary 314cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary if (fDests->size() > 0) { 315cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary docCatalog->insertObjRef("Dests", std::move(fDests)); 316f12a1673f024d30d30f06b9f88b5cc072b8a2d1ehalcanary } 317f12a1673f024d30d30f06b9f88b5cc072b8a2d1ehalcanary 31850e82e61766d22da5238905916a8abc3e6664060halcanary // Build font subsetting info before calling addObjectRecursively(). 319cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary for (const auto& entry : fGlyphUsage) { 320cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary sk_sp<SkPDFFont> subsetFont( 321cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary entry.fFont->getFontSubset(entry.fGlyphSet)); 322cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary if (subsetFont) { 323cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary fObjectSerializer.fSubstituteMap.setSubstitute( 324cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary entry.fFont, subsetFont.get()); 325cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary } 326cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary } 32750e82e61766d22da5238905916a8abc3e6664060halcanary 32850e82e61766d22da5238905916a8abc3e6664060halcanary fObjectSerializer.addObjectRecursively(docCatalog); 32950e82e61766d22da5238905916a8abc3e6664060halcanary fObjectSerializer.serializeObjects(this->getStream()); 33050e82e61766d22da5238905916a8abc3e6664060halcanary fObjectSerializer.serializeFooter( 33150e82e61766d22da5238905916a8abc3e6664060halcanary this->getStream(), docCatalog, std::move(id)); 332cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary 333cc77c12293d1685f5e83d768b30ca9157af1576dhalcanary SkASSERT(fPages.count() == 0); 33450e82e61766d22da5238905916a8abc3e6664060halcanary fCanon.reset(); 33550e82e61766d22da5238905916a8abc3e6664060halcanary renew(&fObjectSerializer); 33650e82e61766d22da5238905916a8abc3e6664060halcanary return true; 33750e82e61766d22da5238905916a8abc3e6664060halcanary} 33850e82e61766d22da5238905916a8abc3e6664060halcanary 33999ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com/////////////////////////////////////////////////////////////////////////////// 34099ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com 34123f4d4d1b9151bb89cdced9986be7ec9b006d458halcanarysk_sp<SkDocument> SkPDFMakeDocument(SkWStream* stream, 34223f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary void (*proc)(SkWStream*, bool), 34323f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary SkScalar dpi, 34423f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary SkPixelSerializer* jpeg) { 34523f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary return stream ? sk_make_sp<SkPDFDocument>(stream, proc, dpi, jpeg) : nullptr; 34623f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary} 34723f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary 3488c92dc1dc281649f9e6b0ff534c25bc89dded3eahalcanarySkDocument* SkDocument::CreatePDF(SkWStream* stream, SkScalar dpi) { 34923f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary return SkPDFMakeDocument(stream, nullptr, dpi, nullptr).release(); 350712fdf7603c62820b21174da9b0a2071c174936bhalcanary} 351712fdf7603c62820b21174da9b0a2071c174936bhalcanary 352712fdf7603c62820b21174da9b0a2071c174936bhalcanarySkDocument* SkDocument::CreatePDF(SkWStream* stream, 353712fdf7603c62820b21174da9b0a2071c174936bhalcanary SkScalar dpi, 354712fdf7603c62820b21174da9b0a2071c174936bhalcanary SkPixelSerializer* jpegEncoder) { 35523f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary return SkPDFMakeDocument(stream, nullptr, dpi, jpegEncoder).release(); 35699ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com} 35799ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com 3588c92dc1dc281649f9e6b0ff534c25bc89dded3eahalcanarySkDocument* SkDocument::CreatePDF(const char path[], SkScalar dpi) { 359385fe4d4b62d7d1dd76116dd570df3290a2f487bhalcanary auto delete_wstream = [](SkWStream* stream, bool) { delete stream; }; 36023f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary SkAutoTDelete<SkFILEWStream> stream(new SkFILEWStream(path)); 36123f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary return stream->isValid() 36218300a3aa7cb6eb55d21bb0450dffa58b6fc062cmtklein ? SkPDFMakeDocument(stream.release(), delete_wstream, dpi, nullptr).release() 36323f4d4d1b9151bb89cdced9986be7ec9b006d458halcanary : nullptr; 36499ac02bb701c1e30b20f2174aac25ffbe487c0afreed@google.com} 365