include/cppcanvas/color.hxx

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  19
  20 #ifndef INCLUDED_CPPCANVAS_COLOR_HXX
  21 #define INCLUDED_CPPCANVAS_COLOR_HXX
  22
  23 #include <sal/types.h>
  24
  25 /* Definition of Color class */
  26
  27 namespace cppcanvas
  28 {
  29     /** Color in the sRGB color space, plus alpha channel
  30
  31         The four bytes of the sal_uInt32 are allocated as follows
  32         to the color channels and alpha: 0xRRGGBBAA.
  33      */
  34     typedef sal_uInt32 IntSRGBA;
  35
  36     inline sal_uInt8 getRed( IntSRGBA nCol )
  37     {
  38         return static_cast<sal_uInt8>( (nCol&0xFF000000U) >> 24U );
  39     }
  40
  41     inline sal_uInt8 getGreen( IntSRGBA nCol )
  42     {
  43         return static_cast<sal_uInt8>( (nCol&0x00FF0000U) >> 16U );
  44     }
  45
  46     inline sal_uInt8 getBlue( IntSRGBA nCol )
  47     {
  48         return static_cast<sal_uInt8>( (nCol&0x0000FF00U) >> 8U );
  49     }
  50
  51     inline sal_uInt8 getAlpha( IntSRGBA nCol )
  52     {
  53         return static_cast<sal_uInt8>( nCol&0x000000FFU );
  54     }
  55
  56     inline IntSRGBA makeColor( sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue, sal_uInt8 nAlpha )
  57     {
  58         return (nRed << 24U)|(nGreen << 16U)|(nBlue << 8U)|nAlpha;
  59     }
  60
  61     inline sal_Int32 makeColorARGB( sal_uInt8 nAlpha, sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue)
  62     {
  63         return (nAlpha << 24U)|(nRed << 16U)|(nGreen << 8U)|nBlue;
  64     }
  65
  66 }
  67
  68 #endif // INCLUDED_CPPCANVAS_COLOR_HXX
  69
  70 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */