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Create a new blank document
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Jakub Melka
@ -1,272 +1,320 @@
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// Copyright (C) 2020 Jakub Melka
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//
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// This file is part of PdfForQt.
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//
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// PdfForQt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
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//
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// PdfForQt is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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||||
// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
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#include "pdfdocumentbuilder.h"
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#include "pdfencoding.h"
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#include "pdfconstants.h"
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namespace pdf
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{
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void PDFObjectFactory::beginArray()
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{
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m_items.emplace_back(ItemType::Array, PDFArray());
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}
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void PDFObjectFactory::endArray()
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{
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Item topItem = qMove(m_items.back());
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Q_ASSERT(topItem.type == ItemType::Array);
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m_items.pop_back();
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addObject(PDFObject::createArray(std::make_shared<PDFArray>(qMove(std::get<PDFArray>(topItem.object)))));
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}
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void PDFObjectFactory::beginDictionary()
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{
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m_items.emplace_back(ItemType::Dictionary, PDFDictionary());
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}
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void PDFObjectFactory::endDictionary()
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{
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Item topItem = qMove(m_items.back());
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Q_ASSERT(topItem.type == ItemType::Dictionary);
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m_items.pop_back();
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addObject(PDFObject::createDictionary(std::make_shared<PDFDictionary>(qMove(std::get<PDFDictionary>(topItem.object)))));
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}
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void PDFObjectFactory::beginDictionaryItem(const QByteArray& name)
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{
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m_items.emplace_back(ItemType::DictionaryItem, name, PDFObject());
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}
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void PDFObjectFactory::endDictionaryItem()
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{
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Item topItem = qMove(m_items.back());
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Q_ASSERT(topItem.type == ItemType::DictionaryItem);
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m_items.pop_back();
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Item& dictionaryItem = m_items.back();
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Q_ASSERT(dictionaryItem.type == ItemType::Dictionary);
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std::get<PDFDictionary>(dictionaryItem.object).addEntry(qMove(topItem.itemName), qMove(std::get<PDFObject>(topItem.object)));
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(QString textString)
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{
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if (!PDFEncoding::canConvertToEncoding(textString, PDFEncoding::Encoding::PDFDoc))
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{
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// Use unicode encoding
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QByteArray ba;
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{
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QTextStream textStream(&ba, QIODevice::WriteOnly);
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textStream.setCodec("UTF-16BE");
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textStream.setGenerateByteOrderMark(true);
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textStream << textString;
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}
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addObject(PDFObject::createString(std::make_shared<PDFString>(qMove(ba))));
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}
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else
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{
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// Use PDF document encoding
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addObject(PDFObject::createString(std::make_shared<PDFString>(PDFEncoding::convertToEncoding(textString, PDFEncoding::Encoding::PDFDoc))));
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}
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return *this;
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(WrapAnnotationColor color)
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{
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if (color.color.isValid())
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{
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// Jakub Melka: we will decide, if we have gray/rgb/cmyk color
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QColor value = color.color;
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if (value.spec() == QColor::Cmyk)
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{
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*this << std::initializer_list<PDFReal>{ value.cyanF(), value.magentaF(), value.yellowF(), value.blackF() };
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}
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else if (qIsGray(value.rgb()))
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{
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*this << std::initializer_list<PDFReal>{ value.redF() };
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}
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else
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{
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*this << std::initializer_list<PDFReal>{ value.redF(), value.greenF(), value.blueF() };
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}
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}
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else
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{
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addObject(PDFObject::createNull());
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}
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return *this;
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(WrapCurrentDateTime)
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{
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addObject(PDFObject::createString(std::make_shared<PDFString>(PDFEncoding::converDateTimeToString(QDateTime::currentDateTime()))));
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return *this;
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(const QRectF& value)
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{
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*this << std::initializer_list<PDFReal>{ value.left(), value.top(), value.right(), value.bottom() };
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return *this;
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(int value)
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{
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*this << PDFInteger(value);
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return *this;
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(WrapName wrapName)
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{
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addObject(PDFObject::createName(std::make_shared<PDFString>(qMove(wrapName.name))));
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return *this;
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}
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PDFObject PDFObjectFactory::takeObject()
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{
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Q_ASSERT(m_items.size() == 1);
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Q_ASSERT(m_items.back().type == ItemType::Object);
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PDFObject result = qMove(std::get<PDFObject>(m_items.back().object));
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m_items.clear();
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return result;
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}
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void PDFObjectFactory::addObject(PDFObject object)
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{
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if (m_items.empty())
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{
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m_items.emplace_back(ItemType::Object, qMove(object));
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return;
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}
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Item& topItem = m_items.back();
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switch (topItem.type)
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{
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case ItemType::Object:
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// Just override the object
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topItem.object = qMove(object);
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break;
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case ItemType::Dictionary:
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// Do not do anything - we are inside dictionary
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break;
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case ItemType::DictionaryItem:
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// Add item to dictionary item
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topItem.object = qMove(object);
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break;
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case ItemType::Array:
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std::get<PDFArray>(topItem.object).appendItem(qMove(object));
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break;
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default:
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Q_ASSERT(false);
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break;
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}
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(std::nullptr_t)
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{
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addObject(PDFObject::createNull());
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return *this;
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(bool value)
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{
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addObject(PDFObject::createBool(value));
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return *this;
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(PDFReal value)
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{
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addObject(PDFObject::createReal(value));
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return *this;
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(PDFInteger value)
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{
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addObject(PDFObject::createInteger(value));
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return *this;
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(PDFObjectReference value)
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{
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addObject(PDFObject::createReference(value));
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return *this;
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}
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PDFDocumentBuilder::PDFDocumentBuilder() :
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m_version(1, 7)
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{
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createDocument();
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}
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PDFDocumentBuilder::PDFDocumentBuilder(const PDFDocument* document) :
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m_storage(document->getStorage()),
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m_version(document->getInfo()->version)
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{
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}
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void PDFDocumentBuilder::reset()
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{
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*this = PDFDocumentBuilder();
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}
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void PDFDocumentBuilder::createDocument()
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{
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reset();
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PDFObjectReference catalog = createCatalog();
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PDFObject trailerDictionary = createTrailerDictionary(catalog);
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m_storage.updateTrailerDictionary(trailerDictionary);
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}
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PDFDocument PDFDocumentBuilder::build()
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{
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updateTrailerDictionary(m_storage.getObjects().size());
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return PDFDocument(PDFObjectStorage(m_storage), m_version);
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}
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PDFObjectReference PDFDocumentBuilder::addObject(PDFObject object)
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{
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return m_storage.addObject(PDFObjectManipulator::removeNullObjects(object));
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}
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void PDFDocumentBuilder::mergeTo(PDFObjectReference reference, PDFObject object)
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{
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m_storage.setObject(reference, PDFObjectManipulator::merge(m_storage.getObject(reference), qMove(object), PDFObjectManipulator::RemoveNullObjects));
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}
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QRectF PDFDocumentBuilder::getPopupWindowRect(const QRectF& rectangle) const
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{
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return rectangle.translated(rectangle.width() * 1.25, 0);
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}
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QString PDFDocumentBuilder::getProducerString() const
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{
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return PDF_LIBRARY_NAME;
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}
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// Copyright (C) 2020 Jakub Melka
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//
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// This file is part of PdfForQt.
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//
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// PdfForQt is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU Lesser General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// PdfForQt is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU Lesser General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU Lesser General Public License
|
||||
// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
|
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#include "pdfdocumentbuilder.h"
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#include "pdfencoding.h"
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#include "pdfconstants.h"
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namespace pdf
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{
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void PDFObjectFactory::beginArray()
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{
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m_items.emplace_back(ItemType::Array, PDFArray());
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}
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void PDFObjectFactory::endArray()
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{
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Item topItem = qMove(m_items.back());
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Q_ASSERT(topItem.type == ItemType::Array);
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m_items.pop_back();
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addObject(PDFObject::createArray(std::make_shared<PDFArray>(qMove(std::get<PDFArray>(topItem.object)))));
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}
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void PDFObjectFactory::beginDictionary()
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{
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m_items.emplace_back(ItemType::Dictionary, PDFDictionary());
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}
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void PDFObjectFactory::endDictionary()
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{
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Item topItem = qMove(m_items.back());
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Q_ASSERT(topItem.type == ItemType::Dictionary);
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m_items.pop_back();
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addObject(PDFObject::createDictionary(std::make_shared<PDFDictionary>(qMove(std::get<PDFDictionary>(topItem.object)))));
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}
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void PDFObjectFactory::beginDictionaryItem(const QByteArray& name)
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{
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m_items.emplace_back(ItemType::DictionaryItem, name, PDFObject());
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}
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void PDFObjectFactory::endDictionaryItem()
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{
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Item topItem = qMove(m_items.back());
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Q_ASSERT(topItem.type == ItemType::DictionaryItem);
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m_items.pop_back();
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Item& dictionaryItem = m_items.back();
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Q_ASSERT(dictionaryItem.type == ItemType::Dictionary);
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std::get<PDFDictionary>(dictionaryItem.object).addEntry(qMove(topItem.itemName), qMove(std::get<PDFObject>(topItem.object)));
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(WrapEmptyArray)
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{
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beginArray();
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endArray();
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return *this;
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(QString textString)
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{
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if (!PDFEncoding::canConvertToEncoding(textString, PDFEncoding::Encoding::PDFDoc))
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{
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// Use unicode encoding
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QByteArray ba;
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|
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{
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QTextStream textStream(&ba, QIODevice::WriteOnly);
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textStream.setCodec("UTF-16BE");
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textStream.setGenerateByteOrderMark(true);
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textStream << textString;
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}
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addObject(PDFObject::createString(std::make_shared<PDFString>(qMove(ba))));
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}
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else
|
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{
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// Use PDF document encoding
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addObject(PDFObject::createString(std::make_shared<PDFString>(PDFEncoding::convertToEncoding(textString, PDFEncoding::Encoding::PDFDoc))));
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}
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return *this;
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}
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PDFObjectFactory& PDFObjectFactory::operator<<(WrapAnnotationColor color)
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{
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||||
if (color.color.isValid())
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{
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||||
// Jakub Melka: we will decide, if we have gray/rgb/cmyk color
|
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QColor value = color.color;
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if (value.spec() == QColor::Cmyk)
|
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{
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*this << std::initializer_list<PDFReal>{ value.cyanF(), value.magentaF(), value.yellowF(), value.blackF() };
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||||
}
|
||||
else if (qIsGray(value.rgb()))
|
||||
{
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*this << std::initializer_list<PDFReal>{ value.redF() };
|
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}
|
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else
|
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{
|
||||
*this << std::initializer_list<PDFReal>{ value.redF(), value.greenF(), value.blueF() };
|
||||
}
|
||||
}
|
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else
|
||||
{
|
||||
addObject(PDFObject::createNull());
|
||||
}
|
||||
|
||||
return *this;
|
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}
|
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|
||||
PDFObjectFactory& PDFObjectFactory::operator<<(WrapCurrentDateTime)
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{
|
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addObject(PDFObject::createString(std::make_shared<PDFString>(PDFEncoding::converDateTimeToString(QDateTime::currentDateTime()))));
|
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return *this;
|
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}
|
||||
|
||||
PDFObjectFactory& PDFObjectFactory::operator<<(const QRectF& value)
|
||||
{
|
||||
*this << std::initializer_list<PDFReal>{ value.left(), value.top(), value.right(), value.bottom() };
|
||||
return *this;
|
||||
}
|
||||
|
||||
PDFObjectFactory& PDFObjectFactory::operator<<(int value)
|
||||
{
|
||||
*this << PDFInteger(value);
|
||||
return *this;
|
||||
}
|
||||
|
||||
PDFObjectFactory& PDFObjectFactory::operator<<(WrapName wrapName)
|
||||
{
|
||||
addObject(PDFObject::createName(std::make_shared<PDFString>(qMove(wrapName.name))));
|
||||
return *this;
|
||||
}
|
||||
|
||||
PDFObject PDFObjectFactory::takeObject()
|
||||
{
|
||||
Q_ASSERT(m_items.size() == 1);
|
||||
Q_ASSERT(m_items.back().type == ItemType::Object);
|
||||
PDFObject result = qMove(std::get<PDFObject>(m_items.back().object));
|
||||
m_items.clear();
|
||||
return result;
|
||||
}
|
||||
|
||||
void PDFObjectFactory::addObject(PDFObject object)
|
||||
{
|
||||
if (m_items.empty())
|
||||
{
|
||||
m_items.emplace_back(ItemType::Object, qMove(object));
|
||||
return;
|
||||
}
|
||||
|
||||
Item& topItem = m_items.back();
|
||||
switch (topItem.type)
|
||||
{
|
||||
case ItemType::Object:
|
||||
// Just override the object
|
||||
topItem.object = qMove(object);
|
||||
break;
|
||||
|
||||
case ItemType::Dictionary:
|
||||
// Do not do anything - we are inside dictionary
|
||||
break;
|
||||
|
||||
case ItemType::DictionaryItem:
|
||||
// Add item to dictionary item
|
||||
topItem.object = qMove(object);
|
||||
break;
|
||||
|
||||
case ItemType::Array:
|
||||
std::get<PDFArray>(topItem.object).appendItem(qMove(object));
|
||||
break;
|
||||
|
||||
default:
|
||||
Q_ASSERT(false);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
PDFObjectFactory& PDFObjectFactory::operator<<(std::nullptr_t)
|
||||
{
|
||||
addObject(PDFObject::createNull());
|
||||
return *this;
|
||||
}
|
||||
|
||||
PDFObjectFactory& PDFObjectFactory::operator<<(bool value)
|
||||
{
|
||||
addObject(PDFObject::createBool(value));
|
||||
return *this;
|
||||
}
|
||||
|
||||
PDFObjectFactory& PDFObjectFactory::operator<<(PDFReal value)
|
||||
{
|
||||
addObject(PDFObject::createReal(value));
|
||||
return *this;
|
||||
}
|
||||
|
||||
PDFObjectFactory& PDFObjectFactory::operator<<(PDFInteger value)
|
||||
{
|
||||
addObject(PDFObject::createInteger(value));
|
||||
return *this;
|
||||
}
|
||||
|
||||
PDFObjectFactory& PDFObjectFactory::operator<<(PDFObjectReference value)
|
||||
{
|
||||
addObject(PDFObject::createReference(value));
|
||||
return *this;
|
||||
}
|
||||
|
||||
PDFDocumentBuilder::PDFDocumentBuilder() :
|
||||
m_version(1, 7)
|
||||
{
|
||||
createDocument();
|
||||
}
|
||||
|
||||
PDFDocumentBuilder::PDFDocumentBuilder(const PDFDocument* document) :
|
||||
m_storage(document->getStorage()),
|
||||
m_version(document->getInfo()->version)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
void PDFDocumentBuilder::reset()
|
||||
{
|
||||
*this = PDFDocumentBuilder();
|
||||
}
|
||||
|
||||
void PDFDocumentBuilder::createDocument()
|
||||
{
|
||||
if (!m_storage.getObjects().empty())
|
||||
{
|
||||
reset();
|
||||
}
|
||||
|
||||
addObject(PDFObject::createNull());
|
||||
PDFObjectReference catalog = createCatalog();
|
||||
PDFObject trailerDictionary = createTrailerDictionary(catalog);
|
||||
m_storage.updateTrailerDictionary(trailerDictionary);
|
||||
m_storage.setSecurityHandler(PDFSecurityHandlerPointer(new PDFNoneSecurityHandler()));
|
||||
}
|
||||
|
||||
PDFDocument PDFDocumentBuilder::build()
|
||||
{
|
||||
updateTrailerDictionary(m_storage.getObjects().size());
|
||||
return PDFDocument(PDFObjectStorage(m_storage), m_version);
|
||||
}
|
||||
|
||||
PDFObjectReference PDFDocumentBuilder::addObject(PDFObject object)
|
||||
{
|
||||
return m_storage.addObject(PDFObjectManipulator::removeNullObjects(object));
|
||||
}
|
||||
|
||||
void PDFDocumentBuilder::mergeTo(PDFObjectReference reference, PDFObject object)
|
||||
{
|
||||
m_storage.setObject(reference, PDFObjectManipulator::merge(m_storage.getObject(reference), qMove(object), PDFObjectManipulator::RemoveNullObjects));
|
||||
}
|
||||
|
||||
void PDFDocumentBuilder::appendTo(PDFObjectReference reference, PDFObject object)
|
||||
{
|
||||
m_storage.setObject(reference, PDFObjectManipulator::merge(m_storage.getObject(reference), qMove(object), PDFObjectManipulator::ConcatenateArrays));
|
||||
}
|
||||
|
||||
QRectF PDFDocumentBuilder::getPopupWindowRect(const QRectF& rectangle) const
|
||||
{
|
||||
return rectangle.translated(rectangle.width() * 1.25, 0);
|
||||
}
|
||||
|
||||
QString PDFDocumentBuilder::getProducerString() const
|
||||
{
|
||||
return PDF_LIBRARY_NAME;
|
||||
}
|
||||
|
||||
PDFObjectReference PDFDocumentBuilder::getPageTreeRoot() const
|
||||
{
|
||||
if (const PDFDictionary* trailerDictionary = getDictionaryFromObject(m_storage.getTrailerDictionary()))
|
||||
{
|
||||
if (const PDFDictionary* catalogDictionary = getDictionaryFromObject(trailerDictionary->get("Root")))
|
||||
{
|
||||
PDFObject pagesRoot = catalogDictionary->get("Pages");
|
||||
if (pagesRoot.isReference())
|
||||
{
|
||||
return pagesRoot.getReference();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return PDFObjectReference();
|
||||
}
|
||||
|
||||
PDFInteger PDFDocumentBuilder::getPageTreeRootChildCount() const
|
||||
{
|
||||
if (const PDFDictionary* pageTreeRootDictionary = getDictionaryFromObject(getObjectByReference(getPageTreeRoot())))
|
||||
{
|
||||
PDFObject childCountObject = getObject(pageTreeRootDictionary->get("Count"));
|
||||
if (childCountObject.isInt())
|
||||
{
|
||||
return childCountObject.getInteger();
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* START GENERATED CODE */
|
||||
|
||||
PDFObjectReference PDFDocumentBuilder::createAnnotationSquare(PDFObjectReference page,
|
||||
@ -369,6 +417,9 @@ PDFObjectReference PDFDocumentBuilder::createCatalog()
|
||||
objectBuilder.beginDictionaryItem("Type");
|
||||
objectBuilder << WrapName("Catalog");
|
||||
objectBuilder.endDictionaryItem();
|
||||
objectBuilder.beginDictionaryItem("Pages");
|
||||
objectBuilder << createCatalogPageTreeRoot();
|
||||
objectBuilder.endDictionaryItem();
|
||||
objectBuilder.endDictionary();
|
||||
PDFObjectReference catalogReference = addObject(objectBuilder.takeObject());
|
||||
return catalogReference;
|
||||
@ -429,6 +480,58 @@ void PDFDocumentBuilder::updateTrailerDictionary(PDFInteger objectCount)
|
||||
}
|
||||
|
||||
|
||||
/* END GENERATED CODE */
|
||||
|
||||
} // namespace pdf
|
||||
PDFObjectReference PDFDocumentBuilder::appendPage(QRectF mediaBox)
|
||||
{
|
||||
PDFObjectFactory objectBuilder;
|
||||
|
||||
objectBuilder.beginDictionary();
|
||||
objectBuilder.beginDictionaryItem("Type");
|
||||
objectBuilder << WrapName("Page");
|
||||
objectBuilder.endDictionaryItem();
|
||||
objectBuilder.beginDictionaryItem("Parent");
|
||||
objectBuilder << getPageTreeRoot();
|
||||
objectBuilder.endDictionaryItem();
|
||||
objectBuilder.beginDictionary();
|
||||
objectBuilder.endDictionary();
|
||||
objectBuilder.beginDictionaryItem("MediaBox");
|
||||
objectBuilder << mediaBox;
|
||||
objectBuilder.endDictionaryItem();
|
||||
objectBuilder.endDictionary();
|
||||
PDFObjectReference pageReference = addObject(objectBuilder.takeObject());
|
||||
objectBuilder.beginDictionary();
|
||||
objectBuilder.beginDictionaryItem("Kids");
|
||||
objectBuilder << std::initializer_list<PDFObjectReference>{ pageReference };
|
||||
objectBuilder.endDictionaryItem();
|
||||
objectBuilder.beginDictionaryItem("Count");
|
||||
objectBuilder << getPageTreeRootChildCount() + 1;
|
||||
objectBuilder.endDictionaryItem();
|
||||
objectBuilder.endDictionary();
|
||||
PDFObject updatedTreeRoot = objectBuilder.takeObject();
|
||||
appendTo(getPageTreeRoot(), updatedTreeRoot);
|
||||
return pageReference;
|
||||
}
|
||||
|
||||
|
||||
PDFObjectReference PDFDocumentBuilder::createCatalogPageTreeRoot()
|
||||
{
|
||||
PDFObjectFactory objectBuilder;
|
||||
|
||||
objectBuilder.beginDictionary();
|
||||
objectBuilder.beginDictionaryItem("Type");
|
||||
objectBuilder << WrapName("Pages");
|
||||
objectBuilder.endDictionaryItem();
|
||||
objectBuilder.beginDictionaryItem("Kids");
|
||||
objectBuilder << WrapEmptyArray();
|
||||
objectBuilder.endDictionaryItem();
|
||||
objectBuilder.beginDictionaryItem("Count");
|
||||
objectBuilder << 0;
|
||||
objectBuilder.endDictionaryItem();
|
||||
objectBuilder.endDictionary();
|
||||
PDFObjectReference pageTreeRoot = addObject(objectBuilder.takeObject());
|
||||
return pageTreeRoot;
|
||||
}
|
||||
|
||||
|
||||
/* END GENERATED CODE */
|
||||
|
||||
} // namespace pdf
|
||||
|
||||
Reference in New Issue
Block a user