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Diffstat (limited to 'svgio/source/svgreader/svggradientnode.cxx')
| -rw-r--r-- | svgio/source/svgreader/svggradientnode.cxx | 507 |
1 files changed, 507 insertions, 0 deletions
diff --git a/svgio/source/svgreader/svggradientnode.cxx b/svgio/source/svgreader/svggradientnode.cxx new file mode 100644 index 000000000..acb193916 --- /dev/null +++ b/svgio/source/svgreader/svggradientnode.cxx @@ -0,0 +1,507 @@ +/* -*- 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 <svggradientnode.hxx> +#include <svgdocument.hxx> +#include <svggradientstopnode.hxx> +#include <osl/diagnose.h> + +namespace svgio::svgreader +{ + void SvgGradientNode::tryToFindLink() + { + if(!mpXLink && !maXLink.isEmpty()) + { + mpXLink = dynamic_cast< const SvgGradientNode* >(getDocument().findSvgNodeById(maXLink)); + } + } + + SvgGradientNode::SvgGradientNode( + SVGToken aType, + SvgDocument& rDocument, + SvgNode* pParent) + : SvgNode(aType, rDocument, pParent), + maSvgStyleAttributes(*this), + maGradientUnits(SvgUnits::objectBoundingBox), + maSpreadMethod(drawinglayer::primitive2d::SpreadMethod::Pad), + mbResolvingLink(false), + mpXLink(nullptr) + { + OSL_ENSURE(aType == SVGToken::LinearGradient || aType == SVGToken::RadialGradient, "SvgGradientNode should only be used for Linear and Radial gradient (!)"); + } + + SvgGradientNode::~SvgGradientNode() + { + // do NOT delete mpXLink, it's only referenced, not owned + } + + const SvgStyleAttributes* SvgGradientNode::getSvgStyleAttributes() const + { + return checkForCssStyle( + SVGToken::LinearGradient == getType() ? OUString("linearGradient") : OUString("radialGradient"), + maSvgStyleAttributes); + } + + void SvgGradientNode::parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent) + { + // call parent + SvgNode::parseAttribute(rTokenName, aSVGToken, aContent); + + // read style attributes + maSvgStyleAttributes.parseStyleAttribute(aSVGToken, aContent, false); + + // parse own + switch(aSVGToken) + { + case SVGToken::Style: + { + readLocalCssStyle(aContent); + break; + } + case SVGToken::X1: + { + SvgNumber aNum; + + if(readSingleNumber(aContent, aNum)) + { + maX1 = aNum; + } + break; + } + case SVGToken::Y1: + { + SvgNumber aNum; + + if(readSingleNumber(aContent, aNum)) + { + maY1 = aNum; + } + break; + } + case SVGToken::X2: + { + SvgNumber aNum; + + if(readSingleNumber(aContent, aNum)) + { + maX2 = aNum; + } + break; + } + case SVGToken::Y2: + { + SvgNumber aNum; + + if(readSingleNumber(aContent, aNum)) + { + maY2 = aNum; + } + break; + } + case SVGToken::Cx: + { + SvgNumber aNum; + + if(readSingleNumber(aContent, aNum)) + { + maCx = aNum; + } + break; + } + case SVGToken::Cy: + { + SvgNumber aNum; + + if(readSingleNumber(aContent, aNum)) + { + maCy = aNum; + } + break; + } + case SVGToken::Fx: + { + SvgNumber aNum; + + if(readSingleNumber(aContent, aNum)) + { + maFx = aNum; + } + break; + } + case SVGToken::Fy: + { + SvgNumber aNum; + + if(readSingleNumber(aContent, aNum)) + { + maFy = aNum; + } + break; + } + case SVGToken::R: + { + SvgNumber aNum; + + if(readSingleNumber(aContent, aNum)) + { + if(aNum.isPositive()) + { + maR = aNum; + } + } + break; + } + case SVGToken::GradientUnits: + { + if(!aContent.isEmpty()) + { + if(aContent.match(commonStrings::aStrUserSpaceOnUse)) + { + setGradientUnits(SvgUnits::userSpaceOnUse); + } + else if(aContent.match(commonStrings::aStrObjectBoundingBox)) + { + setGradientUnits(SvgUnits::objectBoundingBox); + } + } + break; + } + case SVGToken::SpreadMethod: + { + if(!aContent.isEmpty()) + { + if(aContent.startsWith("pad")) + { + setSpreadMethod(drawinglayer::primitive2d::SpreadMethod::Pad); + } + else if(aContent.startsWith("reflect")) + { + setSpreadMethod(drawinglayer::primitive2d::SpreadMethod::Reflect); + } + else if(aContent.startsWith("repeat")) + { + setSpreadMethod(drawinglayer::primitive2d::SpreadMethod::Repeat); + } + } + break; + } + case SVGToken::GradientTransform: + { + const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this)); + + if(!aMatrix.isIdentity()) + { + setGradientTransform(aMatrix); + } + break; + } + case SVGToken::Href: + case SVGToken::XlinkHref: + { + const sal_Int32 nLen(aContent.getLength()); + + if(nLen && '#' == aContent[0]) + { + maXLink = aContent.copy(1); + tryToFindLink(); + } + break; + } + default: + { + break; + } + } + } + + void SvgGradientNode::collectGradientEntries(drawinglayer::primitive2d::SvgGradientEntryVector& aVector) const + { + if(getChildren().empty()) + { + const_cast< SvgGradientNode* >(this)->tryToFindLink(); + + if (mpXLink && !mbResolvingLink) + { + mbResolvingLink = true; + mpXLink->collectGradientEntries(aVector); + mbResolvingLink = false; + } + } + else + { + const sal_uInt32 nCount(getChildren().size()); + + for(sal_uInt32 a(0); a < nCount; a++) + { + const SvgGradientStopNode* pCandidate = dynamic_cast< const SvgGradientStopNode* >(getChildren()[a].get()); + + if(pCandidate) + { + const SvgStyleAttributes* pStyle = pCandidate->getSvgStyleAttributes(); + + if(pStyle) + { + const SvgNumber aOffset(pCandidate->getOffset()); + double fOffset(0.0); + + if(SvgUnit::percent == aOffset.getUnit()) + { + // percent is not relative to distances in ColorStop context, solve locally + fOffset = aOffset.getNumber() * 0.01; + } + else + { + fOffset = aOffset.solve(*this); + } + + if(fOffset < 0.0) + { + OSL_ENSURE(false, "OOps, SvgGradientStopNode with offset out of range (!)"); + fOffset = 0.0; + } + else if(fOffset > 1.0) + { + OSL_ENSURE(false, "OOps, SvgGradientStopNode with offset out of range (!)"); + fOffset = 1.0; + } + + aVector.emplace_back( + fOffset, + pStyle->getStopColor(), + pStyle->getStopOpacity().solve(*this)); + } + else + { + OSL_ENSURE(false, "OOps, SvgGradientStopNode without Style (!)"); + } + } + } + } + } + + SvgNumber SvgGradientNode::getX1() const + { + if(maX1.isSet()) + { + return maX1; + } + + const_cast< SvgGradientNode* >(this)->tryToFindLink(); + + if (mpXLink && !mbResolvingLink) + { + mbResolvingLink = true; + auto ret = mpXLink->getX1(); + mbResolvingLink = false; + return ret; + } + + // default is 0% + return SvgNumber(0.0, SvgUnit::percent); + } + + SvgNumber SvgGradientNode::getY1() const + { + if(maY1.isSet()) + { + return maY1; + } + + const_cast< SvgGradientNode* >(this)->tryToFindLink(); + + if (mpXLink && !mbResolvingLink) + { + mbResolvingLink = true; + auto ret = mpXLink->getY1(); + mbResolvingLink = false; + return ret; + } + + // default is 0% + return SvgNumber(0.0, SvgUnit::percent); + } + + SvgNumber SvgGradientNode::getX2() const + { + if(maX2.isSet()) + { + return maX2; + } + + const_cast< SvgGradientNode* >(this)->tryToFindLink(); + + if (mpXLink && !mbResolvingLink) + { + mbResolvingLink = true; + auto ret = mpXLink->getX2(); + mbResolvingLink = false; + return ret; + } + + // default is 100% + return SvgNumber(100.0, SvgUnit::percent); + } + + SvgNumber SvgGradientNode::getY2() const + { + if(maY2.isSet()) + { + return maY2; + } + + const_cast< SvgGradientNode* >(this)->tryToFindLink(); + + if (mpXLink && !mbResolvingLink) + { + mbResolvingLink = true; + auto ret = mpXLink->getY2(); + mbResolvingLink = false; + return ret; + } + + // default is 0% + return SvgNumber(0.0, SvgUnit::percent); + } + + SvgNumber SvgGradientNode::getCx() const + { + if(maCx.isSet()) + { + return maCx; + } + + const_cast< SvgGradientNode* >(this)->tryToFindLink(); + + if (mpXLink && !mbResolvingLink) + { + mbResolvingLink = true; + auto ret = mpXLink->getCx(); + mbResolvingLink = false; + return ret; + } + + // default is 50% + return SvgNumber(50.0, SvgUnit::percent); + } + + SvgNumber SvgGradientNode::getCy() const + { + if(maCy.isSet()) + { + return maCy; + } + + const_cast< SvgGradientNode* >(this)->tryToFindLink(); + + if (mpXLink && !mbResolvingLink) + { + mbResolvingLink = true; + auto ret = mpXLink->getCy(); + mbResolvingLink = false; + return ret; + } + + // default is 50% + return SvgNumber(50.0, SvgUnit::percent); + } + + SvgNumber SvgGradientNode::getR() const + { + if(maR.isSet()) + { + return maR; + } + + const_cast< SvgGradientNode* >(this)->tryToFindLink(); + + if (mpXLink && !mbResolvingLink) + { + mbResolvingLink = true; + auto ret = mpXLink->getR(); + mbResolvingLink = false; + return ret; + } + + // default is 50% + return SvgNumber(50.0, SvgUnit::percent); + } + + const SvgNumber* SvgGradientNode::getFx() const + { + if(maFx.isSet()) + { + return &maFx; + } + + const_cast< SvgGradientNode* >(this)->tryToFindLink(); + + if (mpXLink && !mbResolvingLink) + { + mbResolvingLink = true; + auto ret = mpXLink->getFx(); + mbResolvingLink = false; + return ret; + } + + return nullptr; + } + + const SvgNumber* SvgGradientNode::getFy() const + { + if(maFy.isSet()) + { + return &maFy; + } + + const_cast< SvgGradientNode* >(this)->tryToFindLink(); + + if (mpXLink && !mbResolvingLink) + { + mbResolvingLink = true; + auto ret = mpXLink->getFy(); + mbResolvingLink = false; + return ret; + } + + return nullptr; + } + + std::optional<basegfx::B2DHomMatrix> SvgGradientNode::getGradientTransform() const + { + if(mpaGradientTransform) + { + return mpaGradientTransform; + } + + const_cast< SvgGradientNode* >(this)->tryToFindLink(); + + if (mpXLink && !mbResolvingLink) + { + mbResolvingLink = true; + auto ret = mpXLink->getGradientTransform(); + mbResolvingLink = false; + return ret; + } + + return std::nullopt; + } + +} // end of namespace svgio::svgreader + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |