svgio/source/svgreader/svgellipsenode.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 <svgellipsenode.hxx>
  21 #include <basegfx/polygon/b2dpolygon.hxx>
  22 #include <basegfx/polygon/b2dpolygontools.hxx>
  23 #include <basegfx/polygon/b2dpolypolygon.hxx>
  24
  25 namespace svgio::svgreader
  26 {
  27         SvgEllipseNode::SvgEllipseNode(
  28             SvgDocument& rDocument,
  29             SvgNode* pParent)
  30         :   SvgNode(SVGToken::Ellipse, rDocument, pParent),
  31             maSvgStyleAttributes(*this),
  32             maCx(0),
  33             maCy(0),
  34             maRx(0),
  35             maRy(0)
  36         {
  37         }
  38
  39         SvgEllipseNode::~SvgEllipseNode()
  40         {
  41         }
  42
  43         const SvgStyleAttributes* SvgEllipseNode::getSvgStyleAttributes() const
  44         {
  45             return checkForCssStyle("ellipse", maSvgStyleAttributes);
  46         }
  47
  48         void SvgEllipseNode::parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent)
  49         {
  50             // call parent
  51             SvgNode::parseAttribute(rTokenName, aSVGToken, aContent);
  52
  53             // read style attributes
  54             maSvgStyleAttributes.parseStyleAttribute(aSVGToken, aContent, false);
  55
  56             // parse own
  57             switch(aSVGToken)
  58             {
  59                 case SVGToken::Style:
  60                 {
  61                     readLocalCssStyle(aContent);
  62                     break;
  63                 }
  64                 case SVGToken::Cx:
  65                 {
  66                     SvgNumber aNum;
  67
  68                     if(readSingleNumber(aContent, aNum))
  69                     {
  70                         maCx = aNum;
  71                     }
  72                     break;
  73                 }
  74                 case SVGToken::Cy:
  75                 {
  76                     SvgNumber aNum;
  77
  78                     if(readSingleNumber(aContent, aNum))
  79                     {
  80                         maCy = aNum;
  81                     }
  82                     break;
  83                 }
  84                 case SVGToken::Rx:
  85                 {
  86                     SvgNumber aNum;
  87
  88                     if(readSingleNumber(aContent, aNum))
  89                     {
  90                         if(aNum.isPositive())
  91                         {
  92                             maRx = aNum;
  93                         }
  94                     }
  95                     break;
  96                 }
  97                 case SVGToken::Ry:
  98                 {
  99                     SvgNumber aNum;
 100
 101                     if(readSingleNumber(aContent, aNum))
 102                     {
 103                         if(aNum.isPositive())
 104                         {
 105                             maRy = aNum;
 106                         }
 107                     }
 108                     break;
 109                 }
 110                 case SVGToken::Transform:
 111                 {
 112                     const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this));
 113
 114                     if(!aMatrix.isIdentity())
 115                     {
 116                         setTransform(&aMatrix);
 117                     }
 118                     break;
 119                 }
 120                 default:
 121                 {
 122                     break;
 123                 }
 124             }
 125         }
 126
 127         void SvgEllipseNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DContainer& rTarget, bool /*bReferenced*/) const
 128         {
 129             const SvgStyleAttributes* pStyle = getSvgStyleAttributes();
 130
 131             if(!(pStyle && getRx().isSet() && getRy().isSet()))
 132                 return;
 133
 134             const double fRx(getRx().solve(*this, NumberType::xcoordinate));
 135             const double fRy(getRy().solve(*this, NumberType::ycoordinate));
 136
 137             if(fRx <= 0.0 || fRy <= 0.0)
 138                 return;
 139
 140             const basegfx::B2DPolygon aPath(
 141                 basegfx::utils::createPolygonFromEllipse(
 142                     basegfx::B2DPoint(
 143                         getCx().isSet() ? getCx().solve(*this, NumberType::xcoordinate) : 0.0,
 144                         getCy().isSet() ? getCy().solve(*this, NumberType::ycoordinate) : 0.0),
 145                     fRx, fRy));
 146
 147             drawinglayer::primitive2d::Primitive2DContainer aNewTarget;
 148
 149             pStyle->add_path(basegfx::B2DPolyPolygon(aPath), aNewTarget, nullptr);
 150
 151             if(!aNewTarget.empty())
 152             {
 153                 pStyle->add_postProcess(rTarget, aNewTarget, getTransform());
 154             }
 155         }
 156 } // end of namespace svgio::svgreader
 157
 158 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */