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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>
#include <osl/diagnose.h>
namespace svgio::svgreader
{
SvgTextNode::SvgTextNode(
SvgDocument& rDocument,
SvgNode* pParent)
: SvgTspanNode(SVGToken::Text, rDocument, pParent)
{
}
SvgTextNode::~SvgTextNode()
{
}
void SvgTextNode::parseAttribute(SVGToken aSVGToken, const OUString& aContent)
{
// call parent
SvgTspanNode::parseAttribute(aSVGToken, aContent);
// parse own
switch(aSVGToken)
{
case SVGToken::Transform:
{
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&& 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, std::move(rSource));
}
else
{
// should not happen, every subnode from SvgTextNode will at least
// return the attributes from SvgTextNode. Nonetheless, add text
rTarget.append(std::move(rSource));
}
}
void SvgTextNode::DecomposeChild(const SvgNode& rCandidate, drawinglayer::primitive2d::Primitive2DContainer& rTarget, SvgTextPosition& rSvgTextPosition) const
{
switch(rCandidate.getType())
{
case SVGToken::Character:
{
// direct SvgTextPathNode derivates, decompose them
const SvgCharacterNode& rSvgCharacterNode = static_cast< const SvgCharacterNode& >(rCandidate);
rSvgCharacterNode.decomposeText(rTarget, rSvgTextPosition);
break;
}
case SVGToken::TextPath:
{
// 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, std::move(aNewTarget));
}
}
break;
}
case SVGToken::Tspan:
{
// 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);
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, std::move(aNewTarget));
}
}
break;
}
case SVGToken::Tref:
{
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, std::move(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 SVGToken::Character, SVGToken::Tspan,
// SVGToken::Tref and SVGToken::TextPath. 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);
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, std::move(aNewTarget));
aNewTarget = aNewTarget2;
}
if(!aNewTarget.empty())
{
pStyle->add_postProcess(rTarget, std::move(aNewTarget), getTransform());
}
}
} // end of namespace svgio::svgreader
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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