include/cppcanvas/color.hxx

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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
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  19
  20 #ifndef INCLUDED_CPPCANVAS_COLOR_HXX
  21 #define INCLUDED_CPPCANVAS_COLOR_HXX
  22
  23 #include <com/sun/star/uno/Sequence.hxx>
  24
  25 #include <boost/shared_ptr.hpp>
  26
  27
  28 /* Definition of Color class */
  29
  30 namespace cppcanvas
  31 {
  32     class Color
  33     {
  34     public:
  35         /** Color in the sRGB color space, plus alpha channel
  36
  37             The four bytes of the sal_uInt32 are allocated as follows
  38             to the color channels and alpha: 0xRRGGBBAA.
  39          */
  40         typedef sal_uInt32 IntSRGBA;
  41
  42         virtual ~Color() {}
  43
  44         virtual IntSRGBA                                    getIntSRGBA( ::com::sun::star::uno::Sequence< double >& rDeviceColor ) const = 0;
  45         virtual ::com::sun::star::uno::Sequence< double >   getDeviceColor( IntSRGBA aSRGBA ) const = 0;
  46     };
  47
  48     typedef ::boost::shared_ptr< ::cppcanvas::Color > ColorSharedPtr;
  49
  50     inline sal_uInt8 getRed( Color::IntSRGBA nCol )
  51     {
  52         return static_cast<sal_uInt8>( (nCol&0xFF000000U) >> 24U );
  53     }
  54
  55     inline sal_uInt8 getGreen( Color::IntSRGBA nCol )
  56     {
  57         return static_cast<sal_uInt8>( (nCol&0x00FF0000U) >> 16U );
  58     }
  59
  60     inline sal_uInt8 getBlue( Color::IntSRGBA nCol )
  61     {
  62         return static_cast<sal_uInt8>( (nCol&0x0000FF00U) >> 8U );
  63     }
  64
  65     inline sal_uInt8 getAlpha( Color::IntSRGBA nCol )
  66     {
  67         return static_cast<sal_uInt8>( nCol&0x000000FFU );
  68     }
  69
  70     inline Color::IntSRGBA makeColor( sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue, sal_uInt8 nAlpha )
  71     {
  72         return (nRed << 24U)|(nGreen << 16U)|(nBlue << 8U)|(nAlpha);
  73     }
  74
  75     inline sal_Int32 unMakeColor( sal_uInt8 nAlpha, sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue)
  76     {
  77         return (nAlpha << 24U)|(nRed << 16U)|(nGreen << 8U)|(nBlue);
  78     }
  79
  80     inline sal_Int32 makeColorARGB( sal_uInt8 nAlpha, sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue)
  81     {
  82         return (nAlpha << 24U)|(nRed << 16U)|(nGreen << 8U)|(nBlue);
  83     }
  84
  85 }
  86
  87 #endif // INCLUDED_CPPCANVAS_COLOR_HXX
  88
  89 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */