drawinglayer/source/primitive2d/helplineprimitive2d.cxx

   1 /*************************************************************************
   2  *
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   5  *  $RCSfile: helplineprimitive2d.cxx,v $
   6  *
   7  *  $Revision: 1.7 $
   8  *
   9  *  last change: $Author: aw $ $Date: 2008-06-24 15:31:08 $
  10  *
  11  *  The Contents of this file are made available subject to
  12  *  the terms of GNU Lesser General Public License Version 2.1.
  13  *
  14  *
  15  *    GNU Lesser General Public License Version 2.1
  16  *    =============================================
  17  *    Copyright 2005 by Sun Microsystems, Inc.
  18  *    901 San Antonio Road, Palo Alto, CA 94303, USA
  19  *
  20  *    This library is free software; you can redistribute it and/or
  21  *    modify it under the terms of the GNU Lesser General Public
  22  *    License version 2.1, as published by the Free Software Foundation.
  23  *
  24  *    This library is distributed in the hope that it will be useful,
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  26  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  27  *    Lesser General Public License for more details.
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  29  *    You should have received a copy of the GNU Lesser General Public
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  31  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  32  *    MA  02111-1307  USA
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  34  ************************************************************************/
  35
  36 // MARKER(update_precomp.py): autogen include statement, do not remove
  37 #include "precompiled_drawinglayer.hxx"
  38
  39 #include <drawinglayer/primitive2d/helplineprimitive2d.hxx>
  40 #include <basegfx/polygon/b2dpolygon.hxx>
  41 #include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
  42 #include <basegfx/polygon/b2dpolygonclipper.hxx>
  43 #include <basegfx/tools/canvastools.hxx>
  44 #include <drawinglayer/geometry/viewinformation2d.hxx>
  45 #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
  46
  47 //////////////////////////////////////////////////////////////////////////////
  48
  49 using namespace com::sun::star;
  50
  51 //////////////////////////////////////////////////////////////////////////////
  52
  53 namespace drawinglayer
  54 {
  55     namespace primitive2d
  56     {
  57         Primitive2DSequence HelplinePrimitive2D::createLocalDecomposition(const geometry::ViewInformation2D& rViewInformation) const
  58         {
  59             std::vector< BasePrimitive2D* > aTempPrimitiveTarget;
  60
  61             if(!rViewInformation.getViewport().isEmpty() && !getDirection().equalZero())
  62             {
  63                 // position to view coordinates, DashLen and DashLen in logic
  64                 const basegfx::B2DPoint aViewPosition(rViewInformation.getObjectToViewTransformation() * getPosition());
  65
  66                 switch(getStyle())
  67                 {
  68                     default : // HELPLINESTYLE2D_POINT
  69                     {
  70                         const double fViewFixValue(15.0);
  71                         basegfx::B2DVector aNormalizedDirection(getDirection());
  72                         aNormalizedDirection.normalize();
  73                         aNormalizedDirection *= fViewFixValue;
  74                         const basegfx::B2DPoint aStartA(aViewPosition - aNormalizedDirection);
  75                         const basegfx::B2DPoint aEndA(aViewPosition + aNormalizedDirection);
  76                         basegfx::B2DPolygon aLineA;
  77                         aLineA.append(aStartA);
  78                         aLineA.append(aEndA);
  79                         aLineA.transform(rViewInformation.getInverseObjectToViewTransformation());
  80                         PolygonMarkerPrimitive2D* pNewA = new PolygonMarkerPrimitive2D(aLineA, getRGBColA(), getRGBColB(), getDiscreteDashLength());
  81                         aTempPrimitiveTarget.push_back(pNewA);
  82
  83                         const basegfx::B2DVector aPerpendicularNormalizedDirection(basegfx::getPerpendicular(aNormalizedDirection));
  84                         const basegfx::B2DPoint aStartB(aViewPosition - aPerpendicularNormalizedDirection);
  85                         const basegfx::B2DPoint aEndB(aViewPosition + aPerpendicularNormalizedDirection);
  86                         basegfx::B2DPolygon aLineB;
  87                         aLineB.append(aStartB);
  88                         aLineB.append(aEndB);
  89                         aLineB.transform(rViewInformation.getInverseObjectToViewTransformation());
  90                         PolygonMarkerPrimitive2D* pNewB = new PolygonMarkerPrimitive2D(aLineB, getRGBColA(), getRGBColB(), getDiscreteDashLength());
  91                         aTempPrimitiveTarget.push_back(pNewB);
  92
  93                         break;
  94                     }
  95                     case HELPLINESTYLE2D_LINE :
  96                     {
  97                         basegfx::B2DPolygon aLine;
  98
  99                         if(basegfx::areParallel(getDirection(), basegfx::B2DVector(1.0, 0.0)))
 100                         {
 101                             // parallel to X-Axis, get cuts with Y-Axes
 102                             const double fCutA((rViewInformation.getDiscreteViewport().getMinX() - aViewPosition.getX()) / getDirection().getX());
 103                             const double fCutB((rViewInformation.getDiscreteViewport().getMaxX() - aViewPosition.getX()) / getDirection().getX());
 104                             const basegfx::B2DPoint aPosA(aViewPosition + (fCutA * getDirection()));
 105                             const basegfx::B2DPoint aPosB(aViewPosition + (fCutB * getDirection()));
 106                             const bool bBothLeft(aPosA.getX() < rViewInformation.getDiscreteViewport().getMinX() && aPosB.getX() < rViewInformation.getDiscreteViewport().getMinX());
 107                             const bool bBothRight(aPosA.getX() > rViewInformation.getDiscreteViewport().getMaxX() && aPosB.getX() < rViewInformation.getDiscreteViewport().getMaxX());
 108
 109                             if(!bBothLeft && !bBothRight)
 110                             {
 111                                 aLine.append(aPosA);
 112                                 aLine.append(aPosB);
 113                             }
 114                         }
 115                         else
 116                         {
 117                             // get cuts with X-Axes
 118                             const double fCutA((rViewInformation.getDiscreteViewport().getMinY() - aViewPosition.getY()) / getDirection().getY());
 119                             const double fCutB((rViewInformation.getDiscreteViewport().getMaxY() - aViewPosition.getY()) / getDirection().getY());
 120                             const basegfx::B2DPoint aPosA(aViewPosition + (fCutA * getDirection()));
 121                             const basegfx::B2DPoint aPosB(aViewPosition + (fCutB * getDirection()));
 122                             const bool bBothAbove(aPosA.getY() < rViewInformation.getDiscreteViewport().getMinY() && aPosB.getY() < rViewInformation.getDiscreteViewport().getMinY());
 123                             const bool bBothBelow(aPosA.getY() > rViewInformation.getDiscreteViewport().getMaxY() && aPosB.getY() < rViewInformation.getDiscreteViewport().getMaxY());
 124
 125                             if(!bBothAbove && !bBothBelow)
 126                             {
 127                                 aLine.append(aPosA);
 128                                 aLine.append(aPosB);
 129                             }
 130                         }
 131
 132                         if(aLine.count())
 133                         {
 134                             // clip against visible area
 135                             const basegfx::B2DPolyPolygon aResult(basegfx::tools::clipPolygonOnRange(aLine, rViewInformation.getDiscreteViewport(), true, true));
 136
 137                             for(sal_uInt32 a(0L); a < aResult.count(); a++)
 138                             {
 139                                 basegfx::B2DPolygon aPart(aResult.getB2DPolygon(a));
 140                                 aPart.transform(rViewInformation.getInverseObjectToViewTransformation());
 141                                 PolygonMarkerPrimitive2D* pNew = new PolygonMarkerPrimitive2D(aPart, getRGBColA(), getRGBColB(), getDiscreteDashLength());
 142                                 aTempPrimitiveTarget.push_back(pNew);
 143                             }
 144                         }
 145
 146                         break;
 147                     }
 148                 }
 149             }
 150
 151             // prepare return value
 152             Primitive2DSequence aRetval(aTempPrimitiveTarget.size());
 153
 154             for(sal_uInt32 a(0L); a < aTempPrimitiveTarget.size(); a++)
 155             {
 156                 const Primitive2DReference xRef(aTempPrimitiveTarget[a]);
 157                 aRetval[a] = xRef;
 158             }
 159
 160             return aRetval;
 161         }
 162
 163         HelplinePrimitive2D::HelplinePrimitive2D(
 164             const basegfx::B2DPoint& rPosition,
 165             const basegfx::B2DVector& rDirection,
 166             HelplineStyle2D eStyle,
 167             const basegfx::BColor& rRGBColA,
 168             const basegfx::BColor& rRGBColB,
 169             double fDiscreteDashLength)
 170         :       BasePrimitive2D(),
 171             maPosition(rPosition),
 172             maDirection(rDirection),
 173             meStyle(eStyle),
 174             maRGBColA(rRGBColA),
 175             maRGBColB(rRGBColB),
 176             mfDiscreteDashLength(fDiscreteDashLength),
 177             maLastObjectToViewTransformation(),
 178             maLastViewport()
 179         {
 180         }
 181
 182         bool HelplinePrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
 183         {
 184             if(BasePrimitive2D::operator==(rPrimitive))
 185             {
 186                 const HelplinePrimitive2D& rCompare = (HelplinePrimitive2D&)rPrimitive;
 187
 188                 return (getPosition() == rCompare.getPosition()
 189                     && getDirection() == rCompare.getDirection()
 190                     && getStyle() == rCompare.getStyle()
 191                     && getRGBColA() == rCompare.getRGBColA()
 192                     && getRGBColB() == rCompare.getRGBColB()
 193                     && getDiscreteDashLength() == rCompare.getDiscreteDashLength());
 194             }
 195
 196             return false;
 197         }
 198
 199         Primitive2DSequence HelplinePrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
 200         {
 201             ::osl::MutexGuard aGuard( m_aMutex );
 202
 203             if(getLocalDecomposition().hasElements())
 204             {
 205                 if(maLastViewport != rViewInformation.getViewport() || maLastObjectToViewTransformation != rViewInformation.getObjectToViewTransformation())
 206                 {
 207                     // conditions of last local decomposition have changed, delete
 208                     const_cast< HelplinePrimitive2D* >(this)->setLocalDecomposition(Primitive2DSequence());
 209                 }
 210             }
 211
 212             if(!getLocalDecomposition().hasElements())
 213             {
 214                 // remember ViewRange and ViewTransformation
 215                 const_cast< HelplinePrimitive2D* >(this)->maLastObjectToViewTransformation = rViewInformation.getObjectToViewTransformation();
 216                 const_cast< HelplinePrimitive2D* >(this)->maLastViewport = rViewInformation.getViewport();
 217             }
 218
 219             // use parent implementation
 220             return BasePrimitive2D::get2DDecomposition(rViewInformation);
 221         }
 222
 223         // provide unique ID
 224         ImplPrimitrive2DIDBlock(HelplinePrimitive2D, PRIMITIVE2D_ID_HELPLINEPRIMITIVE2D)
 225
 226     } // end of namespace primitive2d
 227 } // end of namespace drawinglayer
 228
 229 //////////////////////////////////////////////////////////////////////////////
 230 // eof