xref: /aoo42x/main/svgio/source/svgreader/svgnode.cxx (revision ddde725d)

/**************************************************************
 *
 * 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
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svgio.hxx"

#include <svgio/svgreader/svgnode.hxx>
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#include <svgio/svgreader/svgdocument.hxx>
#include <svgio/svgreader/svgnode.hxx>
#include <svgio/svgreader/svgstyleattributes.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace svgio
{
    namespace svgreader
    {
        const SvgStyleAttributes* SvgNode::getSvgStyleAttributes() const
        {
            return 0;
        }

        SvgNode::SvgNode(
            SVGToken aType,
            SvgDocument& rDocument,
            SvgNode* pParent)
        :   maType(aType),
            mrDocument(rDocument),
            mpParent(pParent),
            mpAlternativeParent(0),
            maChildren(),
            mpId(0),
            mpClass(0),
            maXmlSpace(XmlSpace_notset)
        {
            OSL_ENSURE(SVGTokenUnknown != maType, "SvgNode with unknown type created (!)");

            if(pParent)
            {
                pParent->maChildren.push_back(this);
            }
            else
            {
#ifdef DBG_UTIL
                if(SVGTokenSvg != getType())
                {
                    OSL_ENSURE(false, "No parent for this node (!)");
                }
#endif
            }
        }

        SvgNode::~SvgNode()
        {
            while(maChildren.size())
            {
                delete maChildren[maChildren.size() - 1];
                maChildren.pop_back();
            }

            if(mpId) delete mpId;
            if(mpClass) delete mpClass;
        }

        void SvgNode::parseAttributes(const com::sun::star::uno::Reference< com::sun::star::xml::sax::XAttributeList >& xAttribs)
        {
            const sal_uInt32 nAttributes(xAttribs->getLength());

            for(sal_uInt32 a(0); a < nAttributes; a++)
            {
                const ::rtl::OUString aTokenName(xAttribs->getNameByIndex(a));

                parseAttribute(aTokenName, StrToSVGToken(aTokenName), xAttribs->getValueByIndex(a));
            }
        }

        void SvgNode::parseAttribute(const rtl::OUString& rTokenName, SVGToken aSVGToken, const rtl::OUString& aContent)
        {
            switch(aSVGToken)
            {
                case SVGTokenId:
                {
                    if(aContent.getLength())
                    {
                        setId(&aContent);
                    }
                    break;
                }
                case SVGTokenClass:
                {
                    if(aContent.getLength())
                    {
                        setClass(&aContent);
                    }
                    break;
                }
                case SVGTokenXmlSpace:
                {
                    if(aContent.getLength())
                    {
                        static rtl::OUString aStrDefault(rtl::OUString::createFromAscii("default"));
                        static rtl::OUString aStrPreserve(rtl::OUString::createFromAscii("preserve"));

                        if(aContent.match(aStrDefault))
                        {
                            setXmlSpace(XmlSpace_default);
                        }
                        else if(aContent.match(aStrPreserve))
                        {
                            setXmlSpace(XmlSpace_preserve);
                        }
                    }
                    break;
                }
            }
        }

        void SvgNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DSequence& rTarget, bool bReferenced) const
        {
            if(!bReferenced)
            {
                if(SVGTokenDefs == getType() ||
                    SVGTokenSymbol == getType() ||
                    SVGTokenClipPathNode == getType() ||
                    SVGTokenMask == getType() ||
                    SVGTokenMarker == getType() ||
                    SVGTokenPattern == getType())
                {
                    // do not decompose defs or symbol nodes (these hold only style-like
                    // objects which may be used by referencing them) except when doing
                    // so controlled referenced

                    // also do not decompose ClipPaths and Masks. These should be embedded
                    // in a defs node (which gets not decomposed by itself), but you never
                    // know

                    // also not directly used are Markers and Patterns, only indirecty used
                    // by reference
                    return;
                }
            }

            const SvgNodeVector& rChildren = getChildren();

            if(!rChildren.empty())
            {
                const sal_uInt32 nCount(rChildren.size());

                for(sal_uInt32 a(0); a < nCount; a++)
                {
                    SvgNode* pCandidate = rChildren[a];

                    if(pCandidate)
                    {
                        drawinglayer::primitive2d::Primitive2DSequence aNewTarget;

                        pCandidate->decomposeSvgNode(aNewTarget, bReferenced);

                        if(aNewTarget.hasElements())
                        {
                            drawinglayer::primitive2d::appendPrimitive2DSequenceToPrimitive2DSequence(rTarget, aNewTarget);
                        }
                    }
                    else
                    {
                        OSL_ENSURE(false, "Null-Pointer in child node list (!)");
                    }
                }
            }
        }

        const basegfx::B2DRange* SvgNode::getCurrentViewPort() const
        {
            if(getParent())
            {
                return getParent()->getCurrentViewPort();
            }
            else
            {
                return 0;
            }
        }

        double SvgNode::getCurrentFontSize() const
        {
            if(getSvgStyleAttributes())
            {
                return getSvgStyleAttributes()->getFontSize().solve(*this, xcoordinate);
            }
            else if(getParent())
            {
                return getParent()->getCurrentFontSize();
            }
            else
            {
                return 0.0;
            }
        }

        double SvgNode::getCurrentXHeight() const
        {
            if(getSvgStyleAttributes())
            {
                // for XHeight, use FontSize currently
                return getSvgStyleAttributes()->getFontSize().solve(*this, ycoordinate);
            }
            else if(getParent())
            {
                return getParent()->getCurrentXHeight();
            }
            else
            {
                return 0.0;
            }
        }

        void SvgNode::setId(const rtl::OUString* pfId)
        {
            if(mpId)
            {
                mrDocument.removeSvgNodeFromMapper(*mpId);
                delete mpId;
                mpId = 0;
            }

            if(pfId)
            {
                mpId = new rtl::OUString(*pfId);
                mrDocument.addSvgNodeToMapper(*mpId, *this);
            }
        }

        void SvgNode::setClass(const rtl::OUString* pfClass)
        {
            if(mpClass)
            {
                mrDocument.removeSvgNodeFromMapper(*mpClass);
                delete mpClass;
                mpClass = 0;
            }

            if(pfClass)
            {
                mpClass = new rtl::OUString(*pfClass);
                mrDocument.addSvgNodeToMapper(*mpClass, *this);
            }
        }

        XmlSpace SvgNode::getXmlSpace() const
        {
            if(maXmlSpace != XmlSpace_notset)
            {
                return maXmlSpace;
            }

            if(getParent())
            {
                return getParent()->getXmlSpace();
            }

            // default is XmlSpace_default
            return XmlSpace_default;
        }

    } // end of namespace svgreader
} // end of namespace svgio

//////////////////////////////////////////////////////////////////////////////
// eof