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+/* -*- 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: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 13:46:50 +0000