drawinglayer/source/primitive2d/texteffectprimitive2d.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <drawinglayer/primitive2d/texteffectprimitive2d.hxx>
  21 #include <drawinglayer/geometry/viewinformation2d.hxx>
  22 #include <drawinglayer/primitive2d/modifiedcolorprimitive2d.hxx>
  23 #include <drawinglayer/primitive2d/transformprimitive2d.hxx>
  24 #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
  25 #include <basegfx/matrix/b2dhommatrixtools.hxx>
  26
  27
  28 namespace drawinglayer
  29 {
  30     namespace primitive2d
  31     {
  32         static const double fDiscreteSize(1.1);
  33
  34         void TextEffectPrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& rViewInformation) const
  35         {
  36             // get the distance of one discrete units from target display. Use between 1.0 and sqrt(2) to
  37             // have good results on rotated objects, too
  38             const basegfx::B2DVector aDistance(rViewInformation.getInverseObjectToViewTransformation() *
  39                 basegfx::B2DVector(fDiscreteSize, fDiscreteSize));
  40             const basegfx::B2DVector aDiagonalDistance(aDistance * (1.0 / 1.44));
  41
  42             switch(getTextEffectStyle2D())
  43             {
  44                 case TextEffectStyle2D::ReliefEmbossed:
  45                 case TextEffectStyle2D::ReliefEngraved:
  46                 case TextEffectStyle2D::ReliefEmbossedDefault:
  47                 case TextEffectStyle2D::ReliefEngravedDefault:
  48                 {
  49                     // prepare transform of sub-group back to (0,0) and align to X-Axis
  50                     basegfx::B2DHomMatrix aBackTransform(basegfx::utils::createTranslateB2DHomMatrix(
  51                         -getRotationCenter().getX(), -getRotationCenter().getY()));
  52                     aBackTransform.rotate(-getDirection());
  53
  54                     // prepare transform of sub-group back to its position and rotation
  55                     basegfx::B2DHomMatrix aForwardTransform(basegfx::utils::createRotateB2DHomMatrix(getDirection()));
  56                     aForwardTransform.translate(getRotationCenter().getX(), getRotationCenter().getY());
  57
  58                     // create transformation for one discrete unit
  59                     const bool bEmbossed(
  60                         TextEffectStyle2D::ReliefEmbossed  == getTextEffectStyle2D()
  61                         || TextEffectStyle2D::ReliefEmbossedDefault == getTextEffectStyle2D());
  62                     const bool bDefaultTextColor(
  63                         TextEffectStyle2D::ReliefEmbossedDefault == getTextEffectStyle2D()
  64                         || TextEffectStyle2D::ReliefEngravedDefault == getTextEffectStyle2D());
  65                     basegfx::B2DHomMatrix aTransform(aBackTransform);
  66
  67                     if(bEmbossed)
  68                     {
  69                         // to bottom-right
  70                         aTransform.translate(aDiagonalDistance.getX(), aDiagonalDistance.getY());
  71                     }
  72                     else
  73                     {
  74                         // to top-left
  75                         aTransform.translate(-aDiagonalDistance.getX(), -aDiagonalDistance.getY());
  76                     }
  77
  78                     aTransform *= aForwardTransform;
  79
  80                     if(bDefaultTextColor)
  81                     {
  82                         // emboss/engrave in black, original forced to white
  83                         const basegfx::BColorModifierSharedPtr aBColorModifierToGray(
  84                             new basegfx::BColorModifier_replace(
  85                                 basegfx::BColor(0.0)));
  86                         const Primitive2DReference xModifiedColor(
  87                             new ModifiedColorPrimitive2D(
  88                                 getTextContent(),
  89                                 aBColorModifierToGray));
  90
  91                         rContainer.push_back(
  92                             new TransformPrimitive2D(
  93                                 aTransform,
  94                                 Primitive2DContainer { xModifiedColor }));
  95
  96                         // add original, too
  97                         const basegfx::BColorModifierSharedPtr aBColorModifierToWhite(
  98                             new basegfx::BColorModifier_replace(
  99                                 basegfx::BColor(1.0)));
 100
 101                         rContainer.push_back(
 102                             new ModifiedColorPrimitive2D(
 103                                 getTextContent(),
 104                                 aBColorModifierToWhite));
 105                     }
 106                     else
 107                     {
 108                         // emboss/engrave in gray, keep original's color
 109                         const basegfx::BColorModifierSharedPtr aBColorModifierToGray(
 110                             new basegfx::BColorModifier_replace(
 111                                 basegfx::BColor(0.75))); // 192
 112                         const Primitive2DReference xModifiedColor(
 113                             new ModifiedColorPrimitive2D(
 114                                 getTextContent(),
 115                                 aBColorModifierToGray));
 116
 117                         rContainer.push_back(
 118                             new TransformPrimitive2D(
 119                                 aTransform,
 120                                 Primitive2DContainer { xModifiedColor }));
 121
 122                         // add original, too
 123                         rContainer.push_back(new GroupPrimitive2D(getTextContent()));
 124                     }
 125
 126                     break;
 127                 }
 128                 case TextEffectStyle2D::Outline:
 129                 {
 130                     // create transform primitives in all directions
 131                     basegfx::B2DHomMatrix aTransform;
 132
 133                     aTransform.set(0, 2, aDistance.getX());
 134                     aTransform.set(1, 2, 0.0);
 135                     rContainer.push_back(new TransformPrimitive2D(aTransform, getTextContent()));
 136
 137                     aTransform.set(0, 2, aDiagonalDistance.getX());
 138                     aTransform.set(1, 2, aDiagonalDistance.getY());
 139                     rContainer.push_back(new TransformPrimitive2D(aTransform, getTextContent()));
 140
 141                     aTransform.set(0, 2, 0.0);
 142                     aTransform.set(1, 2, aDistance.getY());
 143                     rContainer.push_back(new TransformPrimitive2D(aTransform, getTextContent()));
 144
 145                     aTransform.set(0, 2, -aDiagonalDistance.getX());
 146                     aTransform.set(1, 2, aDiagonalDistance.getY());
 147                     rContainer.push_back(new TransformPrimitive2D(aTransform, getTextContent()));
 148
 149                     aTransform.set(0, 2, -aDistance.getX());
 150                     aTransform.set(1, 2, 0.0);
 151                     rContainer.push_back(new TransformPrimitive2D(aTransform, getTextContent()));
 152
 153                     aTransform.set(0, 2, -aDiagonalDistance.getX());
 154                     aTransform.set(1, 2, -aDiagonalDistance.getY());
 155                     rContainer.push_back(new TransformPrimitive2D(aTransform, getTextContent()));
 156
 157                     aTransform.set(0, 2, 0.0);
 158                     aTransform.set(1, 2, -aDistance.getY());
 159                     rContainer.push_back(new TransformPrimitive2D(aTransform, getTextContent()));
 160
 161                     aTransform.set(0, 2, aDiagonalDistance.getX());
 162                     aTransform.set(1, 2, -aDiagonalDistance.getY());
 163                     rContainer.push_back(new TransformPrimitive2D(aTransform, getTextContent()));
 164
 165                     // at last, place original over it, but force to white
 166                     const basegfx::BColorModifierSharedPtr aBColorModifierToWhite(
 167                         new basegfx::BColorModifier_replace(
 168                             basegfx::BColor(1.0, 1.0, 1.0)));
 169                     rContainer.push_back(
 170                         new ModifiedColorPrimitive2D(
 171                             getTextContent(),
 172                             aBColorModifierToWhite));
 173
 174                     break;
 175                 }
 176             }
 177         }
 178
 179         TextEffectPrimitive2D::TextEffectPrimitive2D(
 180             const Primitive2DContainer& rTextContent,
 181             const basegfx::B2DPoint& rRotationCenter,
 182             double fDirection,
 183             TextEffectStyle2D eTextEffectStyle2D)
 184         :   BufferedDecompositionPrimitive2D(),
 185             maTextContent(rTextContent),
 186             maRotationCenter(rRotationCenter),
 187             mfDirection(fDirection),
 188             meTextEffectStyle2D(eTextEffectStyle2D)
 189         {
 190         }
 191
 192         bool TextEffectPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
 193         {
 194             if(BasePrimitive2D::operator==(rPrimitive))
 195             {
 196                 const TextEffectPrimitive2D& rCompare = static_cast<const TextEffectPrimitive2D&>(rPrimitive);
 197
 198                 return (getTextContent() == rCompare.getTextContent()
 199                     && getRotationCenter() == rCompare.getRotationCenter()
 200                     && getDirection() == rCompare.getDirection()
 201                     && getTextEffectStyle2D() == rCompare.getTextEffectStyle2D());
 202             }
 203
 204             return false;
 205         }
 206
 207         basegfx::B2DRange TextEffectPrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
 208         {
 209             // get range of content and grow by used fDiscreteSize. That way it is not necessary to ask
 210             // the whole decomposition for its ranges (which may be expensive with outline mode which
 211             // then will ask 9 times at nearly the same content. This may even be refined here using the
 212             // TextEffectStyle information, e.g. for TEXTEFFECTSTYLE2D_RELIEF the grow needs only to
 213             // be in two directions
 214             basegfx::B2DRange aRetval(getTextContent().getB2DRange(rViewInformation));
 215             aRetval.grow(fDiscreteSize);
 216
 217             return aRetval;
 218         }
 219
 220         void TextEffectPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
 221         {
 222             ::osl::MutexGuard aGuard( m_aMutex );
 223
 224             if(!getBuffered2DDecomposition().empty())
 225             {
 226                 if(maLastObjectToViewTransformation != rViewInformation.getObjectToViewTransformation())
 227                 {
 228                     // conditions of last local decomposition have changed, delete
 229                     const_cast< TextEffectPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
 230                 }
 231             }
 232
 233             if(getBuffered2DDecomposition().empty())
 234             {
 235                 // remember ViewRange and ViewTransformation
 236                 const_cast< TextEffectPrimitive2D* >(this)->maLastObjectToViewTransformation = rViewInformation.getObjectToViewTransformation();
 237             }
 238
 239             // use parent implementation
 240             BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
 241         }
 242
 243         // provide unique ID
 244         ImplPrimitive2DIDBlock(TextEffectPrimitive2D, PRIMITIVE2D_ID_TEXTEFFECTPRIMITIVE2D)
 245
 246     } // end of namespace primitive2d
 247 } // end of namespace drawinglayer
 248
 249 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */