mirror of
https://invent.kde.org/graphics/okular
synced 2024-09-19 07:51:27 +00:00
525 lines
15 KiB
C++
525 lines
15 KiB
C++
/***************************************************************************
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* Copyright (C) 2006 by Tobias Koenig <tokoe@kde.org> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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***************************************************************************/
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#include "converter.h"
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#include <QtCore/QUrl>
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#include <QtGui/QTextCursor>
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#include <QtGui/QTextDocument>
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#include <QtGui/QTextFrame>
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#include <QtGui/QTextList>
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#include <QtGui/QTextTableCell>
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#include <QtXml/QDomElement>
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#include <QtXml/QDomText>
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#include <QtXml/QXmlSimpleReader>
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#include <okular/core/action.h>
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#include <okular/core/annotations.h>
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#include <okular/core/document.h>
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#include <klocale.h>
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#include "document.h"
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#include "styleinformation.h"
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#include "styleparser.h"
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using namespace OOO;
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class Style
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{
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public:
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Style( const QTextBlockFormat &blockFormat, const QTextCharFormat &textFormat );
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QTextBlockFormat blockFormat() const;
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QTextCharFormat textFormat() const;
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private:
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QTextBlockFormat mBlockFormat;
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QTextCharFormat mTextFormat;
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};
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Style::Style( const QTextBlockFormat &blockFormat, const QTextCharFormat &textFormat )
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: mBlockFormat( blockFormat ), mTextFormat( textFormat )
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{
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}
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QTextBlockFormat Style::blockFormat() const
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{
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return mBlockFormat;
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}
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QTextCharFormat Style::textFormat() const
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{
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return mTextFormat;
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}
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Converter::Converter()
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: mTextDocument( 0 ), mCursor( 0 ),
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mStyleInformation( new StyleInformation )
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{
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}
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Converter::~Converter()
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{
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delete mStyleInformation;
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mStyleInformation = 0;
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}
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QTextDocument* Converter::convert( const QString &fileName )
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{
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Document oooDocument( fileName );
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if ( !oooDocument.open() ) {
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emit error( oooDocument.lastErrorString(), -1 );
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return 0;
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}
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mTextDocument = new QTextDocument;
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mCursor = new QTextCursor( mTextDocument );
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/**
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* Create the dom of the content
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*/
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QXmlSimpleReader reader;
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QXmlInputSource source;
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source.setData( oooDocument.content() );
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QString errorMsg;
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QDomDocument document;
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if ( !document.setContent( &source, &reader, &errorMsg ) ) {
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emit error( i18n( "Invalid XML document: %1", errorMsg ), -1 );
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delete mCursor;
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return false;
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}
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/**
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* Read the style properties, so the are available when
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* parsing the content.
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*/
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StyleParser styleParser( &oooDocument, document, mStyleInformation );
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if ( !styleParser.parse() ) {
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emit error( i18n( "Unable to read style information" ), -1 );
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delete mCursor;
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return false;
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}
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/**
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* Add all images of the document to resource framework
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*/
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const QMap<QString, QByteArray> images = oooDocument.images();
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QMapIterator<QString, QByteArray> it( images );
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while ( it.hasNext() ) {
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it.next();
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mTextDocument->addResource( QTextDocument::ImageResource, QUrl( it.key() ), QImage::fromData( it.value() ) );
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}
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/**
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* Set the correct page size
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*/
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const QString masterLayout = mStyleInformation->masterPageName();
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const PageFormatProperty property = mStyleInformation->pageProperty( masterLayout );
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mTextDocument->setPageSize( QSize( qRound( property.width() ), qRound( property.height() ) ) );
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QTextFrameFormat frameFormat;
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frameFormat.setMargin( qRound( property.margin() ) );
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QTextFrame *rootFrame = mTextDocument->rootFrame();
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rootFrame->setFrameFormat( frameFormat );
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/**
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* Parse the content of the document
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*/
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const QDomElement documentElement = document.documentElement();
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QDomElement element = documentElement.firstChildElement();
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while ( !element.isNull() ) {
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if ( element.tagName() == QLatin1String( "body" ) ) {
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if ( !convertBody( element ) ) {
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emit error( i18n( "Unable to convert document content" ), -1 );
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delete mCursor;
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return false;
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}
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}
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element = element.nextSiblingElement();
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}
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MetaInformation::List metaInformation = mStyleInformation->metaInformation();
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for ( int i = 0; i < metaInformation.count(); ++i ) {
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emit addMetaData( metaInformation[ i ].key(),
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metaInformation[ i ].value(),
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metaInformation[ i ].title() );
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}
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delete mCursor;
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return mTextDocument;
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}
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bool Converter::convertBody( const QDomElement &element )
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{
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QDomElement child = element.firstChildElement();
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while ( !child.isNull() ) {
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if ( child.tagName() == QLatin1String( "text" ) ) {
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if ( !convertText( child ) )
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return false;
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}
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child = child.nextSiblingElement();
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}
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return true;
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}
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bool Converter::convertText( const QDomElement &element )
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{
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QDomElement child = element.firstChildElement();
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while ( !child.isNull() ) {
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if ( child.tagName() == QLatin1String( "p" ) ) {
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mCursor->insertBlock();
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if ( !convertParagraph( mCursor, child ) )
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return false;
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} else if ( child.tagName() == QLatin1String( "h" ) ) {
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mCursor->insertBlock();
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if ( !convertHeader( mCursor, child ) )
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return false;
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} else if ( child.tagName() == QLatin1String( "list" ) ) {
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if ( !convertList( child ) )
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return false;
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} else if ( child.tagName() == QLatin1String( "table" ) ) {
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if ( !convertTable( child ) )
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return false;
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}
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child = child.nextSiblingElement();
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}
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return true;
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}
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bool Converter::convertHeader( QTextCursor *cursor, const QDomElement &element )
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{
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const QString styleName = element.attribute( "style-name" );
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const StyleFormatProperty property = mStyleInformation->styleProperty( styleName );
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QTextBlockFormat blockFormat;
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QTextCharFormat textFormat;
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property.applyBlock( &blockFormat );
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property.applyText( &textFormat );
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cursor->setBlockFormat( blockFormat );
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QDomNode child = element.firstChild();
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while ( !child.isNull() ) {
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if ( child.isElement() ) {
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const QDomElement childElement = child.toElement();
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if ( childElement.tagName() == QLatin1String( "span" ) ) {
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if ( !convertSpan( cursor, childElement, textFormat ) )
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return false;
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}
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} else if ( child.isText() ) {
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const QDomText childText = child.toText();
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if ( !convertTextNode( cursor, childText, textFormat ) )
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return false;
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}
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child = child.nextSibling();
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}
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emit addTitle( element.attribute( "outline-level", 0 ).toInt(), element.text(), cursor->block() );
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return true;
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}
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bool Converter::convertParagraph( QTextCursor *cursor, const QDomElement &element, const QTextBlockFormat &parentFormat )
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{
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const QString styleName = element.attribute( "style-name" );
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const StyleFormatProperty property = mStyleInformation->styleProperty( styleName );
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QTextBlockFormat blockFormat( parentFormat );
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QTextCharFormat textFormat;
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property.applyBlock( &blockFormat );
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property.applyText( &textFormat );
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cursor->setBlockFormat( blockFormat );
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QDomNode child = element.firstChild();
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while ( !child.isNull() ) {
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if ( child.isElement() ) {
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const QDomElement childElement = child.toElement();
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if ( childElement.tagName() == QLatin1String( "span" ) ) {
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if ( !convertSpan( cursor, childElement, textFormat ) )
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return false;
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} else if ( childElement.tagName() == QLatin1String( "tab" ) ) {
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mCursor->insertText( " " );
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} else if ( childElement.tagName() == QLatin1String( "s" ) ) {
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QString spaces;
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spaces.fill( ' ', childElement.attribute( "c" ).toInt() );
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mCursor->insertText( spaces );
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} else if ( childElement.tagName() == QLatin1String( "frame" ) ) {
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if ( !convertFrame( childElement ) )
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return false;
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} else if ( childElement.tagName() == QLatin1String( "a" ) ) {
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if ( !convertLink( cursor, childElement, textFormat ) )
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return false;
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} else if ( childElement.tagName() == QLatin1String( "annotation" ) ) {
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if ( !convertAnnotation( cursor, childElement ) )
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return false;
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}
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} else if ( child.isText() ) {
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const QDomText childText = child.toText();
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if ( !convertTextNode( cursor, childText, textFormat ) )
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return false;
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}
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child = child.nextSibling();
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}
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return true;
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}
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bool Converter::convertTextNode( QTextCursor *cursor, const QDomText &element, const QTextCharFormat &format )
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{
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cursor->insertText( element.data(), format );
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return true;
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}
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bool Converter::convertSpan( QTextCursor *cursor, const QDomElement &element, const QTextCharFormat &format )
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{
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const QString styleName = element.attribute( "style-name" );
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const StyleFormatProperty property = mStyleInformation->styleProperty( styleName );
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QTextCharFormat textFormat( format );
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property.applyText( &textFormat );
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QDomNode child = element.firstChild();
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while ( !child.isNull() ) {
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if ( child.isText() ) {
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const QDomText childText = child.toText();
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if ( !convertTextNode( cursor, childText, textFormat ) )
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return false;
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}
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child = child.nextSibling();
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}
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return true;
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}
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bool Converter::convertList( const QDomElement &element )
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{
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const QString styleName = element.attribute( "style-name" );
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const ListFormatProperty property = mStyleInformation->listProperty( styleName );
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QTextListFormat format;
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property.apply( &format, 0 );
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QTextList *list = mCursor->insertList( format );
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QDomElement child = element.firstChildElement();
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int loop = 0;
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while ( !child.isNull() ) {
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if ( child.tagName() == QLatin1String( "list-item" ) ) {
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loop++;
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const QDomElement paragraphElement = child.firstChildElement();
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if ( paragraphElement.tagName() != QLatin1String( "p" ) ) {
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child = child.nextSiblingElement();
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continue;
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}
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// FIXME: as soon as Qt is fixed
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// if ( loop > 1 )
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mCursor->insertBlock();
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if ( !convertParagraph( mCursor, paragraphElement ) )
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return false;
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// if ( loop > 1 )
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list->add( mCursor->block() );
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}
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child = child.nextSiblingElement();
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}
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return true;
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}
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bool Converter::convertTable( const QDomElement &element )
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{
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/**
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* Find out dimension of the table
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*/
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QDomElement rowElement = element.firstChildElement();
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int rowCounter = 0;
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int columnCounter = 0;
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while ( !rowElement.isNull() ) {
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if ( rowElement.tagName() == QLatin1String( "table-row" ) ) {
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rowCounter++;
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int counter = 0;
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QDomElement columnElement = rowElement.firstChildElement();
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while ( !columnElement.isNull() ) {
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if ( columnElement.tagName() == QLatin1String( "table-cell" ) ) {
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counter++;
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}
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columnElement = columnElement.nextSiblingElement();
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}
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columnCounter = qMax( columnCounter, counter );
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}
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rowElement = rowElement.nextSiblingElement();
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}
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/**
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* Create table
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*/
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QTextTable *table = mCursor->insertTable( rowCounter, columnCounter );
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/**
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* Fill table
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*/
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rowElement = element.firstChildElement();
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QTextTableFormat tableFormat;
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rowCounter = 0;
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while ( !rowElement.isNull() ) {
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if ( rowElement.tagName() == QLatin1String( "table-row" ) ) {
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int columnCounter = 0;
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QDomElement columnElement = rowElement.firstChildElement();
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while ( !columnElement.isNull() ) {
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if ( columnElement.tagName() == QLatin1String( "table-cell" ) ) {
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const StyleFormatProperty property = mStyleInformation->styleProperty( columnElement.attribute( "style-name" ) );
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QTextBlockFormat format;
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property.applyTableCell( &format );
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QDomElement paragraphElement = columnElement.firstChildElement();
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while ( !paragraphElement.isNull() ) {
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if ( paragraphElement.tagName() == QLatin1String( "p" ) ) {
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QTextTableCell cell = table->cellAt( rowCounter, columnCounter );
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QTextCursor cursor = cell.firstCursorPosition();
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cursor.setBlockFormat( format );
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if ( !convertParagraph( &cursor, paragraphElement, format ) )
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return false;
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}
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paragraphElement = paragraphElement.nextSiblingElement();
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}
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columnCounter++;
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}
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columnElement = columnElement.nextSiblingElement();
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}
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rowCounter++;
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}
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if ( rowElement.tagName() == QLatin1String( "table-column" ) ) {
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const StyleFormatProperty property = mStyleInformation->styleProperty( rowElement.attribute( "style-name" ) );
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property.applyTableColumn( &tableFormat );
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}
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rowElement = rowElement.nextSiblingElement();
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}
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table->setFormat( tableFormat );
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return true;
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}
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bool Converter::convertFrame( const QDomElement &element )
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{
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QDomElement child = element.firstChildElement();
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while ( !child.isNull() ) {
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if ( child.tagName() == QLatin1String( "image" ) ) {
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const QString href = child.attribute( "href" );
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QTextImageFormat format;
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format.setWidth( StyleParser::convertUnit( element.attribute( "width" ) ) );
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format.setHeight( StyleParser::convertUnit( element.attribute( "height" ) ) );
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format.setName( href );
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mCursor->insertImage( format );
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}
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child = child.nextSiblingElement();
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}
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return true;
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}
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bool Converter::convertLink( QTextCursor *cursor, const QDomElement &element, const QTextCharFormat &format )
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{
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int startPosition = cursor->position();
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QDomNode child = element.firstChild();
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while ( !child.isNull() ) {
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if ( child.isElement() ) {
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const QDomElement childElement = child.toElement();
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if ( childElement.tagName() == QLatin1String( "span" ) ) {
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if ( !convertSpan( cursor, childElement, format ) )
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return false;
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}
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} else if ( child.isText() ) {
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const QDomText childText = child.toText();
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if ( !convertTextNode( cursor, childText, format ) )
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return false;
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}
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child = child.nextSibling();
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}
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int endPosition = cursor->position();
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Okular::Action *action = new Okular::BrowseAction( element.attribute( "href" ) );
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emit addAction( action, startPosition, endPosition );
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return true;
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}
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bool Converter::convertAnnotation( QTextCursor *cursor, const QDomElement &element )
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{
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QStringList contents;
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QString creator;
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QDateTime dateTime;
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int position = cursor->position();
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QDomElement child = element.firstChildElement();
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while ( !child.isNull() ) {
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if ( child.tagName() == QLatin1String( "creator" ) ) {
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creator = child.text();
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} else if ( child.tagName() == QLatin1String( "date" ) ) {
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dateTime = QDateTime::fromString( child.text(), Qt::ISODate );
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} else if ( child.tagName() == QLatin1String( "p" ) ) {
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contents.append( child.text() );
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}
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child = child.nextSiblingElement();
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}
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Okular::TextAnnotation *annotation = new Okular::TextAnnotation;
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annotation->setAuthor( creator );
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annotation->setContents( contents.join( "\n" ) );
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annotation->setCreationDate( dateTime );
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annotation->style().setColor( QColor( "#ffff00" ) );
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annotation->style().setOpacity( 0.5 );
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emit addAnnotation( annotation, position, position + 3 );
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return true;
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}
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