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Diffstat (limited to 'svgio/source/svgreader/svgtextnode.cxx')
| -rw-r--r-- | svgio/source/svgreader/svgtextnode.cxx | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/svgio/source/svgreader/svgtextnode.cxx b/svgio/source/svgreader/svgtextnode.cxx new file mode 100644 index 000000000..aff56aa7f --- /dev/null +++ b/svgio/source/svgreader/svgtextnode.cxx @@ -0,0 +1,264 @@ +/* -*- 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 <svgtextnode.hxx> +#include <svgcharacternode.hxx> +#include <svgstyleattributes.hxx> +#include <svgtrefnode.hxx> +#include <svgtextpathnode.hxx> +#include <svgtspannode.hxx> + +namespace svgio::svgreader +{ + SvgTextNode::SvgTextNode( + SvgDocument& rDocument, + SvgNode* pParent) + : SvgNode(SVGTokenText, rDocument, pParent), + maSvgStyleAttributes(*this), + maSvgTextPositions() + { + } + + SvgTextNode::~SvgTextNode() + { + } + + const SvgStyleAttributes* SvgTextNode::getSvgStyleAttributes() const + { + return checkForCssStyle("text", maSvgStyleAttributes); + } + + void SvgTextNode::parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent) + { + // call parent + SvgNode::parseAttribute(rTokenName, aSVGToken, aContent); + + // read style attributes + maSvgStyleAttributes.parseStyleAttribute(aSVGToken, aContent, false); + + // read text position attributes + maSvgTextPositions.parseTextPositionAttributes(aSVGToken, aContent); + + // parse own + switch(aSVGToken) + { + case SVGTokenStyle: + { + readLocalCssStyle(aContent); + break; + } + case SVGTokenTransform: + { + const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this)); + + if(!aMatrix.isIdentity()) + { + setTransform(&aMatrix); + } + break; + } + default: + { + break; + } + } + } + + void SvgTextNode::addTextPrimitives( + const SvgNode& rCandidate, + drawinglayer::primitive2d::Primitive2DContainer& rTarget, + drawinglayer::primitive2d::Primitive2DContainer const & rSource) + { + if(rSource.empty()) + return; + + const SvgStyleAttributes* pAttributes = rCandidate.getSvgStyleAttributes(); + + if(pAttributes) + { + // add text with taking all Fill/Stroke attributes into account + pAttributes->add_text(rTarget, rSource); + } + else + { + // should not happen, every subnode from SvgTextNode will at least + // return the attributes from SvgTextNode. Nonetheless, add text + rTarget.append(rSource); + } + } + + void SvgTextNode::DecomposeChild(const SvgNode& rCandidate, drawinglayer::primitive2d::Primitive2DContainer& rTarget, SvgTextPosition& rSvgTextPosition) const + { + switch(rCandidate.getType()) + { + case SVGTokenCharacter: + { + // direct SvgTextPathNode derivates, decompose them + const SvgCharacterNode& rSvgCharacterNode = static_cast< const SvgCharacterNode& >(rCandidate); + rSvgCharacterNode.decomposeText(rTarget, rSvgTextPosition); + break; + } + case SVGTokenTextPath: + { + // direct TextPath decompose + const SvgTextPathNode& rSvgTextPathNode = static_cast< const SvgTextPathNode& >(rCandidate); + const auto& rChildren = rSvgTextPathNode.getChildren(); + const sal_uInt32 nCount(rChildren.size()); + + if(nCount && rSvgTextPathNode.isValid()) + { + // remember original TextStart to later detect hor/ver offsets + const basegfx::B2DPoint aTextStart(rSvgTextPosition.getPosition()); + drawinglayer::primitive2d::Primitive2DContainer aNewTarget; + + // decompose to regular TextPrimitives + for(sal_uInt32 a(0); a < nCount; a++) + { + DecomposeChild(*rChildren[a], aNewTarget, rSvgTextPosition); + } + + if(!aNewTarget.empty()) + { + const drawinglayer::primitive2d::Primitive2DContainer aPathContent(aNewTarget); + aNewTarget.clear(); + + // dismantle TextPrimitives and map them on curve/path + rSvgTextPathNode.decomposePathNode(aPathContent, aNewTarget, aTextStart); + } + + if(!aNewTarget.empty()) + { + addTextPrimitives(rCandidate, rTarget, aNewTarget); + } + } + + break; + } + case SVGTokenTspan: + { + // Tspan may have children, call recursively + const SvgTspanNode& rSvgTspanNode = static_cast< const SvgTspanNode& >(rCandidate); + const auto& rChildren = rSvgTspanNode.getChildren(); + const sal_uInt32 nCount(rChildren.size()); + + if(nCount) + { + SvgTextPosition aSvgTextPosition(&rSvgTextPosition, rSvgTspanNode, rSvgTspanNode.getSvgTextPositions()); + drawinglayer::primitive2d::Primitive2DContainer aNewTarget; + + for(sal_uInt32 a(0); a < nCount; a++) + { + DecomposeChild(*rChildren[a], aNewTarget, aSvgTextPosition); + } + + rSvgTextPosition.setPosition(aSvgTextPosition.getPosition()); + + if(!aNewTarget.empty()) + { + addTextPrimitives(rCandidate, rTarget, aNewTarget); + } + } + break; + } + case SVGTokenTref: + { + const SvgTrefNode& rSvgTrefNode = static_cast< const SvgTrefNode& >(rCandidate); + const SvgTextNode* pRefText = rSvgTrefNode.getReferencedSvgTextNode(); + + if(pRefText) + { + const auto& rChildren = pRefText->getChildren(); + const sal_uInt32 nCount(rChildren.size()); + drawinglayer::primitive2d::Primitive2DContainer aNewTarget; + + if(nCount) + { + for(sal_uInt32 a(0); a < nCount; a++) + { + const SvgNode& rChildCandidate = *rChildren[a]; + const_cast< SvgNode& >(rChildCandidate).setAlternativeParent(this); + + DecomposeChild(rChildCandidate, aNewTarget, rSvgTextPosition); + const_cast< SvgNode& >(rChildCandidate).setAlternativeParent(); + } + + if(!aNewTarget.empty()) + { + addTextPrimitives(rCandidate, rTarget, aNewTarget); + } + } + } + + break; + } + default: + { + OSL_ENSURE(false, "Unexpected node in text token (!)"); + break; + } + } + } + + void SvgTextNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DContainer& rTarget, bool /*bReferenced`*/) const + { + // text has a group of child nodes, allowed are SVGTokenCharacter, SVGTokenTspan, + // SVGTokenTref and SVGTokenTextPath. These increase a given current text position + const SvgStyleAttributes* pStyle = getSvgStyleAttributes(); + + if(!(pStyle && !getChildren().empty())) + return; + + const double fOpacity(pStyle->getOpacity().getNumber()); + + if(fOpacity <= 0.0) + return; + + SvgTextPosition aSvgTextPosition(nullptr, *this, maSvgTextPositions); + drawinglayer::primitive2d::Primitive2DContainer aNewTarget; + const auto& rChildren = getChildren(); + const sal_uInt32 nCount(rChildren.size()); + + for(sal_uInt32 a(0); a < nCount; a++) + { + const SvgNode& rCandidate = *rChildren[a]; + + DecomposeChild(rCandidate, aNewTarget, aSvgTextPosition); + } + + if(!aNewTarget.empty()) + { + drawinglayer::primitive2d::Primitive2DContainer aNewTarget2; + + addTextPrimitives(*this, aNewTarget2, aNewTarget); + aNewTarget = aNewTarget2; + } + + if(!aNewTarget.empty()) + { + pStyle->add_postProcess(rTarget, aNewTarget, getTransform()); + } + } + + double SvgTextNode::getCurrentFontSize() const + { + return getCurrentFontSizeInherited(); + } +} // end of namespace svgio::svgreader + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |