LCOV - code coverage report
Current view: top level - libreoffice/svgio/source/svgreader - svgmasknode.cxx (source / functions) Hit Total Coverage
Test: libreoffice_filtered.info Lines: 0 92 0.0 %
Date: 2012-12-27 Functions: 0 7 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       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/svgmasknode.hxx>
      21             : #include <drawinglayer/primitive2d/transformprimitive2d.hxx>
      22             : #include <drawinglayer/primitive2d/transparenceprimitive2d.hxx>
      23             : #include <basegfx/matrix/b2dhommatrixtools.hxx>
      24             : #include <drawinglayer/geometry/viewinformation2d.hxx>
      25             : #include <drawinglayer/primitive2d/modifiedcolorprimitive2d.hxx>
      26             : #include <drawinglayer/primitive2d/maskprimitive2d.hxx>
      27             : #include <basegfx/polygon/b2dpolygontools.hxx>
      28             : #include <basegfx/polygon/b2dpolygon.hxx>
      29             : 
      30             : //////////////////////////////////////////////////////////////////////////////
      31             : 
      32             : namespace svgio
      33             : {
      34             :     namespace svgreader
      35             :     {
      36           0 :         SvgMaskNode::SvgMaskNode(
      37             :             SvgDocument& rDocument,
      38             :             SvgNode* pParent)
      39             :         :   SvgNode(SVGTokenMask, rDocument, pParent),
      40             :             maSvgStyleAttributes(*this),
      41             :             maX(SvgNumber(-10.0, Unit_percent, true)),
      42             :             maY(SvgNumber(-10.0, Unit_percent, true)),
      43             :             maWidth(SvgNumber(120.0, Unit_percent, true)),
      44             :             maHeight(SvgNumber(120.0, Unit_percent, true)),
      45             :             mpaTransform(0),
      46             :             maMaskUnits(objectBoundingBox),
      47           0 :             maMaskContentUnits(userSpaceOnUse)
      48             :         {
      49           0 :         }
      50             : 
      51           0 :         SvgMaskNode::~SvgMaskNode()
      52             :         {
      53           0 :             if(mpaTransform) delete mpaTransform;
      54           0 :         }
      55             : 
      56           0 :         const SvgStyleAttributes* SvgMaskNode::getSvgStyleAttributes() const
      57             :         {
      58           0 :             return &maSvgStyleAttributes;
      59             :         }
      60             : 
      61           0 :         void SvgMaskNode::parseAttribute(const rtl::OUString& rTokenName, SVGToken aSVGToken, const rtl::OUString& aContent)
      62             :         {
      63             :             // call parent
      64           0 :             SvgNode::parseAttribute(rTokenName, aSVGToken, aContent);
      65             : 
      66             :             // read style attributes
      67           0 :             maSvgStyleAttributes.parseStyleAttribute(rTokenName, aSVGToken, aContent);
      68             : 
      69             :             // parse own
      70           0 :             switch(aSVGToken)
      71             :             {
      72             :                 case SVGTokenStyle:
      73             :                 {
      74           0 :                     maSvgStyleAttributes.readStyle(aContent);
      75           0 :                     break;
      76             :                 }
      77             :                 case SVGTokenX:
      78             :                 {
      79           0 :                     SvgNumber aNum;
      80             : 
      81           0 :                     if(readSingleNumber(aContent, aNum))
      82             :                     {
      83           0 :                         setX(aNum);
      84             :                     }
      85             :                     break;
      86             :                 }
      87             :                 case SVGTokenY:
      88             :                 {
      89           0 :                     SvgNumber aNum;
      90             : 
      91           0 :                     if(readSingleNumber(aContent, aNum))
      92             :                     {
      93           0 :                         setY(aNum);
      94             :                     }
      95             :                     break;
      96             :                 }
      97             :                 case SVGTokenWidth:
      98             :                 {
      99           0 :                     SvgNumber aNum;
     100             : 
     101           0 :                     if(readSingleNumber(aContent, aNum))
     102             :                     {
     103           0 :                         if(aNum.isPositive())
     104             :                         {
     105           0 :                             setWidth(aNum);
     106             :                         }
     107             :                     }
     108             :                     break;
     109             :                 }
     110             :                 case SVGTokenHeight:
     111             :                 {
     112           0 :                     SvgNumber aNum;
     113             : 
     114           0 :                     if(readSingleNumber(aContent, aNum))
     115             :                     {
     116           0 :                         if(aNum.isPositive())
     117             :                         {
     118           0 :                             setHeight(aNum);
     119             :                         }
     120             :                     }
     121             :                     break;
     122             :                 }
     123             :                 case SVGTokenTransform:
     124             :                 {
     125           0 :                     const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this));
     126             : 
     127           0 :                     if(!aMatrix.isIdentity())
     128             :                     {
     129           0 :                         setTransform(&aMatrix);
     130             :                     }
     131           0 :                     break;
     132             :                 }
     133             :                 case SVGTokenMaskUnits:
     134             :                 {
     135           0 :                     if(aContent.getLength())
     136             :                     {
     137           0 :                         if(aContent.match(commonStrings::aStrUserSpaceOnUse, 0))
     138             :                         {
     139           0 :                             setMaskUnits(userSpaceOnUse);
     140             :                         }
     141           0 :                         else if(aContent.match(commonStrings::aStrObjectBoundingBox, 0))
     142             :                         {
     143           0 :                             setMaskUnits(objectBoundingBox);
     144             :                         }
     145             :                     }
     146           0 :                     break;
     147             :                 }
     148             :                 case SVGTokenMaskContentUnits:
     149             :                 {
     150           0 :                     if(aContent.getLength())
     151             :                     {
     152           0 :                         if(aContent.match(commonStrings::aStrUserSpaceOnUse, 0))
     153             :                         {
     154           0 :                             setMaskContentUnits(userSpaceOnUse);
     155             :                         }
     156           0 :                         else if(aContent.match(commonStrings::aStrObjectBoundingBox, 0))
     157             :                         {
     158           0 :                             setMaskContentUnits(objectBoundingBox);
     159             :                         }
     160             :                     }
     161           0 :                     break;
     162             :                 }
     163             :                 default:
     164             :                 {
     165           0 :                     break;
     166             :                 }
     167             :             }
     168           0 :         }
     169             : 
     170           0 :         void SvgMaskNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DSequence& rTarget, bool bReferenced) const
     171             :         {
     172           0 :             drawinglayer::primitive2d::Primitive2DSequence aNewTarget;
     173             : 
     174             :             // decompose childs
     175           0 :             SvgNode::decomposeSvgNode(aNewTarget, bReferenced);
     176             : 
     177           0 :             if(aNewTarget.hasElements())
     178             :             {
     179           0 :                 if(getTransform())
     180             :                 {
     181             :                     // create embedding group element with transformation
     182             :                     const drawinglayer::primitive2d::Primitive2DReference xRef(
     183             :                         new drawinglayer::primitive2d::TransformPrimitive2D(
     184             :                             *getTransform(),
     185           0 :                             aNewTarget));
     186             : 
     187           0 :                     aNewTarget = drawinglayer::primitive2d::Primitive2DSequence(&xRef, 1);
     188             :                 }
     189             : 
     190             :                 // append to current target
     191           0 :                 drawinglayer::primitive2d::appendPrimitive2DSequenceToPrimitive2DSequence(rTarget, aNewTarget);
     192           0 :             }
     193           0 :         }
     194             : 
     195           0 :         void SvgMaskNode::apply(drawinglayer::primitive2d::Primitive2DSequence& rTarget) const
     196             :         {
     197           0 :             if(rTarget.hasElements())
     198             :             {
     199           0 :                 drawinglayer::primitive2d::Primitive2DSequence aMaskTarget;
     200             : 
     201             :                 // get mask definition as primitives
     202           0 :                 decomposeSvgNode(aMaskTarget, true);
     203             : 
     204           0 :                 if(aMaskTarget.hasElements())
     205             :                 {
     206             :                     // get range of content to be masked
     207             :                     const basegfx::B2DRange aContentRange(
     208             :                         drawinglayer::primitive2d::getB2DRangeFromPrimitive2DSequence(
     209             :                             rTarget,
     210           0 :                             drawinglayer::geometry::ViewInformation2D()));
     211           0 :                     const double fContentWidth(aContentRange.getWidth());
     212           0 :                     const double fContentHeight(aContentRange.getHeight());
     213             : 
     214           0 :                     if(fContentWidth > 0.0 && fContentHeight > 0.0)
     215             :                     {
     216             :                         // create OffscreenBufferRange
     217           0 :                         basegfx::B2DRange aOffscreenBufferRange;
     218             : 
     219           0 :                         if(objectBoundingBox == getMaskUnits())
     220             :                         {
     221             :                             // fractions or percentages of the bounding box of the element to which the mask is applied
     222           0 :                             const double fX(Unit_percent == getX().getUnit() ? getX().getNumber() * 0.01 : getX().getNumber());
     223           0 :                             const double fY(Unit_percent == getY().getUnit() ? getY().getNumber() * 0.01 : getY().getNumber());
     224           0 :                             const double fW(Unit_percent == getWidth().getUnit() ? getWidth().getNumber() * 0.01 : getWidth().getNumber());
     225           0 :                             const double fH(Unit_percent == getHeight().getUnit() ? getHeight().getNumber() * 0.01 : getHeight().getNumber());
     226             : 
     227             :                             aOffscreenBufferRange = basegfx::B2DRange(
     228           0 :                                 aContentRange.getMinX() + (fX * fContentWidth),
     229           0 :                                 aContentRange.getMinY() + (fY * fContentHeight),
     230           0 :                                 aContentRange.getMinX() + ((fX + fW) * fContentWidth),
     231           0 :                                 aContentRange.getMinY() + ((fY + fH) * fContentHeight));
     232             :                         }
     233             :                         else
     234             :                         {
     235           0 :                             const double fX(getX().isSet() ? getX().solve(*this, xcoordinate) : 0.0);
     236           0 :                             const double fY(getY().isSet() ? getY().solve(*this, ycoordinate) : 0.0);
     237             : 
     238             :                             aOffscreenBufferRange = basegfx::B2DRange(
     239             :                                 fX,
     240             :                                 fY,
     241           0 :                                 fX + (getWidth().isSet() ? getWidth().solve(*this, xcoordinate) : 0.0),
     242           0 :                                 fY + (getHeight().isSet() ? getHeight().solve(*this, ycoordinate) : 0.0));
     243             :                         }
     244             : 
     245           0 :                         if(objectBoundingBox == getMaskContentUnits())
     246             :                         {
     247             :                             // mask is object-relative, embed in content transformation
     248             :                             const drawinglayer::primitive2d::Primitive2DReference xTransform(
     249             :                                 new drawinglayer::primitive2d::TransformPrimitive2D(
     250             :                                     basegfx::tools::createScaleTranslateB2DHomMatrix(
     251             :                                         aContentRange.getRange(),
     252             :                                         aContentRange.getMinimum()),
     253           0 :                                     aMaskTarget));
     254             : 
     255           0 :                             aMaskTarget = drawinglayer::primitive2d::Primitive2DSequence(&xTransform, 1);
     256             :                         }
     257             : 
     258             :                         // embed content to a ModifiedColorPrimitive2D since the definitions
     259             :                         // how content is used as alpha is special for Svg
     260             :                         {
     261             :                             const drawinglayer::primitive2d::Primitive2DReference xInverseMask(
     262             :                                 new drawinglayer::primitive2d::ModifiedColorPrimitive2D(
     263             :                                     aMaskTarget,
     264             :                                     basegfx::BColorModifier(
     265             :                                         basegfx::BColor(0.0, 0.0, 0.0),
     266             :                                         0.5,
     267           0 :                                         basegfx::BCOLORMODIFYMODE_LUMINANCE_TO_ALPHA)));
     268             : 
     269           0 :                             aMaskTarget = drawinglayer::primitive2d::Primitive2DSequence(&xInverseMask, 1);
     270             :                         }
     271             : 
     272             :                         // prepare new content
     273             :                         drawinglayer::primitive2d::Primitive2DReference xNewContent(
     274             :                             new drawinglayer::primitive2d::TransparencePrimitive2D(
     275             :                                 rTarget,
     276           0 :                                 aMaskTarget));
     277             : 
     278             :                         // output up to now is defined by aContentRange and mask is oriented
     279             :                         // relative to it. It is possible that aOffscreenBufferRange defines
     280             :                         // a smaller area. In that case, embed to a mask primitive
     281           0 :                         if(!aOffscreenBufferRange.isInside(aContentRange))
     282             :                         {
     283             :                             xNewContent = new drawinglayer::primitive2d::MaskPrimitive2D(
     284             :                                 basegfx::B2DPolyPolygon(
     285             :                                     basegfx::tools::createPolygonFromRect(
     286             :                                         aOffscreenBufferRange)),
     287           0 :                                 drawinglayer::primitive2d::Primitive2DSequence(&xNewContent, 1));
     288             :                         }
     289             : 
     290             :                         // redefine target. Use TransparencePrimitive2D with created mask
     291             :                         // geometry
     292           0 :                         rTarget = drawinglayer::primitive2d::Primitive2DSequence(&xNewContent, 1);
     293             :                     }
     294             :                     else
     295             :                     {
     296             :                         // content is geometrically empty
     297           0 :                         rTarget.realloc(0);
     298             :                     }
     299             :                 }
     300             :                 else
     301             :                 {
     302             :                     // An empty clipping path will completely clip away the element that had
     303             :                     // the ‘clip-path’ property applied. (Svg spec)
     304           0 :                     rTarget.realloc(0);
     305           0 :                 }
     306             :             }
     307           0 :         }
     308             : 
     309             :     } // end of namespace svgreader
     310             : } // end of namespace svgio
     311             : 
     312             : //////////////////////////////////////////////////////////////////////////////
     313             : // eof
     314             : 
     315             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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