drawinglayer/source/primitive2d/fillgradientprimitive2d.cxx

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   5  *  $RCSfile: fillgradientprimitive2d.cxx,v $
   6  *
   7  *  $Revision: 1.6 $
   8  *
   9  *  last change: $Author: aw $ $Date: 2008-05-27 14:11:20 $
  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.
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  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.
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  35
  36 // MARKER(update_precomp.py): autogen include statement, do not remove
  37 #include "precompiled_drawinglayer.hxx"
  38
  39 #include <drawinglayer/primitive2d/fillgradientprimitive2d.hxx>
  40 #include <basegfx/polygon/b2dpolygon.hxx>
  41 #include <basegfx/polygon/b2dpolygontools.hxx>
  42 #include <drawinglayer/texture/texture.hxx>
  43 #include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
  44 #include <basegfx/tools/canvastools.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 FillGradientPrimitive2D::createLocalDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
  58         {
  59             const attribute::GradientStyle aGradientStyle(maFillGradient.getStyle());
  60             ::std::vector< basegfx::B2DHomMatrix > aMatrices;
  61             ::std::vector< basegfx::BColor > aColors;
  62             basegfx::B2DPolygon aUnitPolygon;
  63             sal_uInt32 nSteps(maFillGradient.getSteps());
  64
  65             if(attribute::GRADIENTSTYLE_RADIAL == aGradientStyle || attribute::GRADIENTSTYLE_ELLIPTICAL == aGradientStyle)
  66             {
  67                 const basegfx::B2DPoint aCircleCenter(0.5, 0.5);
  68                 aUnitPolygon = basegfx::tools::createPolygonFromEllipse(aCircleCenter, 0.5, 0.5);
  69             }
  70             else
  71             {
  72                 aUnitPolygon = basegfx::tools::createPolygonFromRect(basegfx::B2DRange(0.0, 0.0, 1.0, 1.0));
  73             }
  74
  75             // make sure steps is not too high/low
  76             const basegfx::BColor aStart(maFillGradient.getStartColor());
  77             const basegfx::BColor aEnd(maFillGradient.getEndColor());
  78             const sal_uInt32 nMaxSteps(sal_uInt32((aStart.getMaximumDistance(aEnd) * 127.5) + 0.5));
  79
  80             if(nSteps == 0L)
  81             {
  82                 nSteps = nMaxSteps;
  83             }
  84
  85             if(nSteps < 2L)
  86             {
  87                 nSteps = 2L;
  88             }
  89
  90             if(nSteps > nMaxSteps)
  91             {
  92                 nSteps = nMaxSteps;
  93             }
  94
  95             switch(aGradientStyle)
  96             {
  97                 case attribute::GRADIENTSTYLE_LINEAR:
  98                 {
  99                     texture::GeoTexSvxGradientLinear aGradient(getObjectRange(), aStart, aEnd, nSteps, maFillGradient.getBorder(), -maFillGradient.getAngle());
 100                     aGradient.appendTransformations(aMatrices);
 101                     aGradient.appendColors(aColors);
 102                     break;
 103                 }
 104                 case attribute::GRADIENTSTYLE_AXIAL:
 105                 {
 106                     texture::GeoTexSvxGradientAxial aGradient(getObjectRange(), aStart, aEnd, nSteps, maFillGradient.getBorder(), -maFillGradient.getAngle());
 107                     aGradient.appendTransformations(aMatrices);
 108                     aGradient.appendColors(aColors);
 109                     break;
 110                 }
 111                 case attribute::GRADIENTSTYLE_RADIAL:
 112                 {
 113                     texture::GeoTexSvxGradientRadial aGradient(getObjectRange(), aStart, aEnd, nSteps, maFillGradient.getBorder(), maFillGradient.getOffsetX(), maFillGradient.getOffsetY());
 114                     aGradient.appendTransformations(aMatrices);
 115                     aGradient.appendColors(aColors);
 116                     break;
 117                 }
 118                 case attribute::GRADIENTSTYLE_ELLIPTICAL:
 119                 {
 120                     texture::GeoTexSvxGradientElliptical aGradient(getObjectRange(), aStart, aEnd, nSteps, maFillGradient.getBorder(), maFillGradient.getOffsetX(), maFillGradient.getOffsetY(), -maFillGradient.getAngle());
 121                     aGradient.appendTransformations(aMatrices);
 122                     aGradient.appendColors(aColors);
 123                     break;
 124                 }
 125                 case attribute::GRADIENTSTYLE_SQUARE:
 126                 {
 127                     texture::GeoTexSvxGradientSquare aGradient(getObjectRange(), aStart, aEnd, nSteps, maFillGradient.getBorder(), maFillGradient.getOffsetX(), maFillGradient.getOffsetY(), -maFillGradient.getAngle());
 128                     aGradient.appendTransformations(aMatrices);
 129                     aGradient.appendColors(aColors);
 130                     break;
 131                 }
 132                 case attribute::GRADIENTSTYLE_RECT:
 133                 {
 134                     texture::GeoTexSvxGradientRect aGradient(getObjectRange(), aStart, aEnd, nSteps, maFillGradient.getBorder(), maFillGradient.getOffsetX(), maFillGradient.getOffsetY(), -maFillGradient.getAngle());
 135                     aGradient.appendTransformations(aMatrices);
 136                     aGradient.appendColors(aColors);
 137                     break;
 138                 }
 139             }
 140
 141             // prepare return value
 142             Primitive2DSequence aRetval(aColors.size() ? aMatrices.size() + 1L : aMatrices.size());
 143
 144             // create solid fill with start color
 145             if(aColors.size())
 146             {
 147                 // create primitive
 148                 const Primitive2DReference xRef(new PolyPolygonColorPrimitive2D(basegfx::B2DPolyPolygon(basegfx::tools::createPolygonFromRect(getObjectRange())), aColors[0L]));
 149                 aRetval[0L] = xRef;
 150             }
 151
 152             // create solid fill steps
 153             for(sal_uInt32 a(0L); a < aMatrices.size(); a++)
 154             {
 155                 // create part polygon
 156                 basegfx::B2DPolygon aNewPoly(aUnitPolygon);
 157                 aNewPoly.transform(aMatrices[a]);
 158
 159                 // create solid fill
 160                 const Primitive2DReference xRef(new PolyPolygonColorPrimitive2D(basegfx::B2DPolyPolygon(aNewPoly), aColors[a + 1L]));
 161                 aRetval[a + 1L] = xRef;
 162             }
 163
 164             return aRetval;
 165         }
 166
 167         FillGradientPrimitive2D::FillGradientPrimitive2D(
 168             const basegfx::B2DRange& rObjectRange,
 169             const attribute::FillGradientAttribute& rFillGradient)
 170         :       BasePrimitive2D(),
 171             maObjectRange(rObjectRange),
 172             maFillGradient(rFillGradient)
 173         {
 174         }
 175
 176         bool FillGradientPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
 177         {
 178             if(BasePrimitive2D::operator==(rPrimitive))
 179             {
 180                 const FillGradientPrimitive2D& rCompare = (FillGradientPrimitive2D&)rPrimitive;
 181
 182                 return (getObjectRange() == rCompare.getObjectRange()
 183                     && maFillGradient == rCompare.maFillGradient);
 184             }
 185
 186             return false;
 187         }
 188
 189         basegfx::B2DRange FillGradientPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation*/) const
 190         {
 191             // return ObjectRange
 192             return getObjectRange();
 193         }
 194
 195         // provide unique ID
 196         ImplPrimitrive2DIDBlock(FillGradientPrimitive2D, PRIMITIVE2D_ID_FILLGRADIENTPRIMITIVE2D)
 197
 198     } // end of namespace primitive2d
 199 } // end of namespace drawinglayer
 200
 201 //////////////////////////////////////////////////////////////////////////////
 202 // eof