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-rw-r--r--svgio/source/svgreader/svggradientnode.cxx507
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diff --git a/svgio/source/svgreader/svggradientnode.cxx b/svgio/source/svgreader/svggradientnode.cxx
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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 <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: */