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Diffstat (limited to 'sdext/source/pdfimport/tree/style.cxx')
| -rw-r--r-- | sdext/source/pdfimport/tree/style.cxx | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/sdext/source/pdfimport/tree/style.cxx b/sdext/source/pdfimport/tree/style.cxx new file mode 100644 index 000000000..8d6f7d375 --- /dev/null +++ b/sdext/source/pdfimport/tree/style.cxx @@ -0,0 +1,248 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + + +#include "style.hxx" +#include <genericelements.hxx> +#include <xmlemitter.hxx> +#include <rtl/ustrbuf.hxx> + +#include <algorithm> +#include <string_view> + +using namespace pdfi; + + +StyleContainer::StyleContainer() : + m_nNextId( 1 ) +{ +} + +sal_Int32 StyleContainer::impl_getStyleId( const Style& rStyle, bool bSubStyle ) +{ + sal_Int32 nRet = -1; + + // construct HashedStyle to find or insert + HashedStyle aSearchStyle; + aSearchStyle.Name = rStyle.Name; + aSearchStyle.Properties = rStyle.Properties; + aSearchStyle.Contents = rStyle.Contents; + aSearchStyle.ContainedElement = rStyle.ContainedElement; + for(Style* pSubStyle : rStyle.SubStyles) + aSearchStyle.SubStyles.push_back( impl_getStyleId( *pSubStyle, true ) ); + + std::unordered_map< HashedStyle, sal_Int32, StyleHash >::iterator it = + m_aStyleToId.find( aSearchStyle ); + + if( it != m_aStyleToId.end() ) + { + nRet = it->second; + RefCountedHashedStyle& rFound = m_aIdToStyle[ nRet ]; + // increase refcount on this style + rFound.RefCount++; + if( ! bSubStyle ) + rFound.style.IsSubStyle = false; + } + else + { + nRet = m_nNextId++; + // create new style + RefCountedHashedStyle& rNew = m_aIdToStyle[ nRet ]; + rNew.style = aSearchStyle; + rNew.RefCount = 1; + rNew.style.IsSubStyle = bSubStyle; + // fill the style hash to find the id + m_aStyleToId[ rNew.style ] = nRet; + } + return nRet; +} + +sal_Int32 StyleContainer::getStandardStyleId( const OString& rName ) +{ + PropertyMap aProps; + aProps[ "style:family" ] = OStringToOUString( rName, RTL_TEXTENCODING_UTF8 ); + aProps[ "style:name" ] = "standard"; + + Style aStyle( "style:style", aProps ); + return getStyleId( aStyle ); +} + +const PropertyMap* StyleContainer::getProperties( sal_Int32 nStyleId ) const +{ + std::unordered_map< sal_Int32, RefCountedHashedStyle >::const_iterator it = + m_aIdToStyle.find( nStyleId ); + return it != m_aIdToStyle.end() ? &(it->second.style.Properties) : nullptr; +} + +sal_Int32 StyleContainer::setProperties( sal_Int32 nStyleId, const PropertyMap& rNewProps ) +{ + sal_Int32 nRet = -1; + std::unordered_map< sal_Int32, RefCountedHashedStyle >::iterator it = + m_aIdToStyle.find( nStyleId ); + if( it != m_aIdToStyle.end() ) + { + if( it->second.RefCount == 1 ) + { + nRet = it->first; + // erase old hash to id mapping + m_aStyleToId.erase( it->second.style ); + // change properties + it->second.style.Properties = rNewProps; + // fill in new hash to id mapping + m_aStyleToId[ it->second.style ] = nRet; + } + else + { + // decrease refcount on old instance + it->second.RefCount--; + // acquire new HashedStyle + HashedStyle aSearchStyle; + aSearchStyle.Name = it->second.style.Name; + aSearchStyle.Properties = rNewProps; + aSearchStyle.Contents = it->second.style.Contents; + aSearchStyle.ContainedElement = it->second.style.ContainedElement; + aSearchStyle.SubStyles = it->second.style.SubStyles; + aSearchStyle.IsSubStyle = it->second.style.IsSubStyle; + + // find out whether this new style already exists + std::unordered_map< HashedStyle, sal_Int32, StyleHash >::iterator new_it = + m_aStyleToId.find( aSearchStyle ); + if( new_it != m_aStyleToId.end() ) + { + nRet = new_it->second; + m_aIdToStyle[ nRet ].RefCount++; + } + else + { + nRet = m_nNextId++; + // create new style with new id + RefCountedHashedStyle& rNew = m_aIdToStyle[ nRet ]; + rNew.style = aSearchStyle; + rNew.RefCount = 1; + // fill style to id hash + m_aStyleToId[ aSearchStyle ] = nRet; + } + } + } + return nRet; +} + +OUString StyleContainer::getStyleName( sal_Int32 nStyle ) const +{ + OUStringBuffer aRet( 64 ); + + std::unordered_map< sal_Int32, RefCountedHashedStyle >::const_iterator style_it = + m_aIdToStyle.find( nStyle ); + if( style_it != m_aIdToStyle.end() ) + { + const HashedStyle& rStyle = style_it->second.style; + + PropertyMap::const_iterator name_it = rStyle.Properties.find( "style:name" ); + if( name_it != rStyle.Properties.end() ) + aRet.append( name_it->second ); + else + { + PropertyMap::const_iterator fam_it = rStyle.Properties.find( "style:family" ); + OUString aStyleName; + if( fam_it != rStyle.Properties.end() ) + { + aStyleName = fam_it->second; + } + else + aStyleName = OStringToOUString( rStyle.Name, RTL_TEXTENCODING_ASCII_US ); + sal_Int32 nIndex = aStyleName.lastIndexOf( ':' ); + aRet.append( std::u16string_view(aStyleName).substr(nIndex+1) ); + aRet.append( nStyle ); + } + } + else + { + aRet.append( "invalid style id " ); + aRet.append( nStyle ); + } + + return aRet.makeStringAndClear(); +} + +void StyleContainer::impl_emitStyle( sal_Int32 nStyleId, + EmitContext& rContext, + ElementTreeVisitor& rContainedElemVisitor ) +{ + std::unordered_map< sal_Int32, RefCountedHashedStyle >::const_iterator it = m_aIdToStyle.find( nStyleId ); + if( it == m_aIdToStyle.end() ) + return; + + const HashedStyle& rStyle = it->second.style; + PropertyMap aProps( rStyle.Properties ); + if( !rStyle.IsSubStyle ) + aProps[ "style:name" ] = getStyleName( nStyleId ); + if (rStyle.Name == "draw:stroke-dash") + aProps[ "draw:name" ] = aProps[ "style:name" ]; + rContext.rEmitter.beginTag( rStyle.Name.getStr(), aProps ); + + for(sal_Int32 nSubStyle : rStyle.SubStyles) + impl_emitStyle( nSubStyle, rContext, rContainedElemVisitor ); + if( !rStyle.Contents.isEmpty() ) + rContext.rEmitter.write( rStyle.Contents ); + if( rStyle.ContainedElement ) + rStyle.ContainedElement->visitedBy( rContainedElemVisitor, + std::list<std::unique_ptr<Element>>::iterator() ); + rContext.rEmitter.endTag( rStyle.Name.getStr() ); +} + +void StyleContainer::emit( EmitContext& rContext, + ElementTreeVisitor& rContainedElemVisitor ) +{ + std::vector< sal_Int32 > aMasterPageSection, aAutomaticStyleSection, aOfficeStyleSection; + for( const auto& rEntry : m_aIdToStyle ) + { + if( ! rEntry.second.style.IsSubStyle ) + { + if( rEntry.second.style.Name == "style:master-page" ) + aMasterPageSection.push_back( rEntry.first ); + else if( getStyleName( rEntry.first ) == "standard" ) + aOfficeStyleSection.push_back( rEntry.first ); + else + aAutomaticStyleSection.push_back( rEntry.first ); + } + } + + if( ! aMasterPageSection.empty() ) + std::stable_sort( aMasterPageSection.begin(), aMasterPageSection.end(), StyleIdNameSort(&m_aIdToStyle) ); + if( ! aAutomaticStyleSection.empty() ) + std::stable_sort( aAutomaticStyleSection.begin(), aAutomaticStyleSection.end(), StyleIdNameSort(&m_aIdToStyle) ); + if( ! aOfficeStyleSection.empty() ) + std::stable_sort( aOfficeStyleSection.begin(), aOfficeStyleSection.end(), StyleIdNameSort(&m_aIdToStyle) ); + + int n = 0, nElements = 0; + rContext.rEmitter.beginTag( "office:styles", PropertyMap() ); + for( n = 0, nElements = aOfficeStyleSection.size(); n < nElements; n++ ) + impl_emitStyle( aOfficeStyleSection[n], rContext, rContainedElemVisitor ); + rContext.rEmitter.endTag( "office:styles" ); + rContext.rEmitter.beginTag( "office:automatic-styles", PropertyMap() ); + for( n = 0, nElements = aAutomaticStyleSection.size(); n < nElements; n++ ) + impl_emitStyle( aAutomaticStyleSection[n], rContext, rContainedElemVisitor ); + rContext.rEmitter.endTag( "office:automatic-styles" ); + rContext.rEmitter.beginTag( "office:master-styles", PropertyMap() ); + for( n = 0, nElements = aMasterPageSection.size(); n < nElements; n++ ) + impl_emitStyle( aMasterPageSection[n], rContext, rContainedElemVisitor ); + rContext.rEmitter.endTag( "office:master-styles" ); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |