svgio/source/svgreader/svgusenode.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <svgio/svgreader/svgusenode.hxx>
  21 #include <drawinglayer/primitive2d/transformprimitive2d.hxx>
  22 #include <svgio/svgreader/svgdocument.hxx>
  23
  24 namespace svgio
  25 {
  26     namespace svgreader
  27     {
  28         SvgUseNode::SvgUseNode(
  29             SvgDocument& rDocument,
  30             SvgNode* pParent)
  31         :   SvgNode(SVGTokenG, rDocument, pParent),
  32             maSvgStyleAttributes(*this),
  33             mpaTransform(0),
  34             maX(),
  35             maY(),
  36             maWidth(),
  37             maHeight(),
  38             maXLink()
  39         {
  40         }
  41
  42         SvgUseNode::~SvgUseNode()
  43         {
  44             if(mpaTransform) delete mpaTransform;
  45         }
  46
  47         const SvgStyleAttributes* SvgUseNode::getSvgStyleAttributes() const
  48         {
  49             return checkForCssStyle(OUString("use"), maSvgStyleAttributes);
  50         }
  51
  52         void SvgUseNode::parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent)
  53         {
  54             // call parent
  55             SvgNode::parseAttribute(rTokenName, aSVGToken, aContent);
  56
  57             // read style attributes
  58             maSvgStyleAttributes.parseStyleAttribute(rTokenName, aSVGToken, aContent, false);
  59
  60             // parse own
  61             switch(aSVGToken)
  62             {
  63                 case SVGTokenStyle:
  64                 {
  65                     readLocalCssStyle(aContent);
  66                     break;
  67                 }
  68                 case SVGTokenTransform:
  69                 {
  70                     const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this));
  71
  72                     if(!aMatrix.isIdentity())
  73                     {
  74                         setTransform(&aMatrix);
  75                     }
  76                     break;
  77                 }
  78                 case SVGTokenX:
  79                 {
  80                     SvgNumber aNum;
  81
  82                     if(readSingleNumber(aContent, aNum))
  83                     {
  84                         setX(aNum);
  85                     }
  86                     break;
  87                 }
  88                 case SVGTokenY:
  89                 {
  90                     SvgNumber aNum;
  91
  92                     if(readSingleNumber(aContent, aNum))
  93                     {
  94                         setY(aNum);
  95                     }
  96                     break;
  97                 }
  98                 case SVGTokenWidth:
  99                 {
 100                     SvgNumber aNum;
 101
 102                     if(readSingleNumber(aContent, aNum))
 103                     {
 104                         if(aNum.isPositive())
 105                         {
 106                             setWidth(aNum);
 107                         }
 108                     }
 109                     break;
 110                 }
 111                 case SVGTokenHeight:
 112                 {
 113                     SvgNumber aNum;
 114
 115                     if(readSingleNumber(aContent, aNum))
 116                     {
 117                         if(aNum.isPositive())
 118                         {
 119                             setHeight(aNum);
 120                         }
 121                     }
 122                     break;
 123                 }
 124                 case SVGTokenXlinkHref:
 125                 {
 126                     const sal_Int32 nLen(aContent.getLength());
 127
 128                     if(nLen && '#' == aContent[0])
 129                     {
 130                         maXLink = aContent.copy(1);
 131                     }
 132                     break;
 133                 }
 134                 default:
 135                 {
 136                     break;
 137                 }
 138             }
 139         }
 140
 141         void SvgUseNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DSequence& rTarget, bool /*bReferenced*/) const
 142         {
 143             // try to access link to content
 144             const SvgNode* mpXLink = getDocument().findSvgNodeById(maXLink);
 145
 146             if(mpXLink && Display_none != mpXLink->getDisplay())
 147             {
 148                 // decompose children
 149                 drawinglayer::primitive2d::Primitive2DSequence aNewTarget;
 150
 151                 // todo: in case mpXLink is a SVGTokenSvg or SVGTokenSymbol the
 152                 // SVG docs want the getWidth() and getHeight() from this node
 153                 // to be valid for the subtree.
 154                 const_cast< SvgNode* >(mpXLink)->setAlternativeParent(this);
 155                 mpXLink->decomposeSvgNode(aNewTarget, true);
 156                 const_cast< SvgNode* >(mpXLink)->setAlternativeParent(0);
 157
 158                 if(aNewTarget.hasElements())
 159                 {
 160                     basegfx::B2DHomMatrix aTransform;
 161
 162                     if(getX().isSet() || getY().isSet())
 163                     {
 164                         aTransform.translate(
 165                             getX().solve(*this, xcoordinate),
 166                             getY().solve(*this, ycoordinate));
 167                     }
 168
 169                     if(getTransform())
 170                     {
 171                         aTransform = *getTransform() * aTransform;
 172                     }
 173
 174                     if(!aTransform.isIdentity())
 175                     {
 176                         const drawinglayer::primitive2d::Primitive2DReference xRef(
 177                             new drawinglayer::primitive2d::TransformPrimitive2D(
 178                                 aTransform,
 179                                 aNewTarget));
 180
 181                         drawinglayer::primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(rTarget, xRef);
 182                     }
 183                     else
 184                     {
 185                         drawinglayer::primitive2d::appendPrimitive2DSequenceToPrimitive2DSequence(rTarget, aNewTarget);
 186                     }
 187                 }
 188             }
 189         }
 190
 191     } // end of namespace svgreader
 192 } // end of namespace svgio
 193
 194 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */