include/basebmp/genericcolorimageaccessor.hxx

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  19
  20 #ifndef INCLUDED_BASEBMP_GENERICCOLORIMAGEACCESSOR_HXX
  21 #define INCLUDED_BASEBMP_GENERICCOLORIMAGEACCESSOR_HXX
  22
  23 #include <basebmp/color.hxx>
  24 #include <basebmp/bitmapdevice.hxx>
  25
  26 namespace basebmp
  27 {
  28     /** Access a BitmapDevice generically
  29
  30         This accessor deals with an opaque BitmapDevice generically,
  31         via getPixel()/setPixel() at the published interface.
  32      */
  33     class GenericColorImageAccessor
  34     {
  35         BitmapDeviceSharedPtr mpDevice;
  36         DrawMode              meDrawMode;
  37
  38     public:
  39         typedef Color value_type;
  40
  41         explicit GenericColorImageAccessor( BitmapDeviceSharedPtr const& rTarget ) :
  42             mpDevice(rTarget),
  43             meDrawMode(DrawMode_PAINT)
  44         {}
  45
  46         GenericColorImageAccessor( BitmapDeviceSharedPtr const& rTarget,
  47                                    DrawMode                     eDrawMode ) :
  48             mpDevice(rTarget),
  49             meDrawMode(eDrawMode)
  50         {}
  51
  52         template< typename Iterator >
  53         Color operator()( Iterator const& i ) const
  54         { return mpDevice->getPixel( basegfx::B2IPoint( i->x,i->y ) ); }
  55
  56         template< typename Iterator, typename Difference >
  57         Color operator()( Iterator const& i, Difference const& diff) const
  58         { return mpDevice->getPixel( basegfx::B2IPoint( i[diff]->x,
  59                                                         i[diff]->y ) ); }
  60
  61         template< typename Iterator >
  62         void set(Color const& value, Iterator const& i) const
  63         { return mpDevice->setPixel( basegfx::B2IPoint( i->x,i->y ),
  64                                      value, meDrawMode ); }
  65
  66         template< class Iterator, class Difference >
  67         void set(value_type const& value, Iterator const& i, Difference const& diff) const
  68         { return mpDevice->setPixel( basegfx::B2IPoint( i[diff]->x,
  69                                                         i[diff]->y ),
  70                                      value, meDrawMode ); }
  71     };
  72 }
  73
  74 #endif /* INCLUDED_BASEBMP_GENERICCOLORIMAGEACCESSOR_HXX */
  75
  76 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */