IMG_Pixmap.h Source File

00001 
00005 
00006 #ifndef _H_IMG_Pixmap
00007 #define _H_IMG_Pixmap
00008 
00009 #include "IMG_Types.h"
00010 //#include "IMG_Color.h"
00011 #include "IMG_Rect.h"
00012 
00013 
00019 
00020 class IMG_Pixmap {
00021 public:
00023         typedef enum {
00024                 kPixelTypeRGB32         = 0,    
00025                 kPixelTypeRGBA32        = 1,    
00026 //              kPixelTypeRGB16         = 2,    /**< Ignore:1, R:5, G:5, B:5    */
00027 //              kPixelTypeRGBA16        = 3,    /**< Alpha:1,  R:5, G:5, B:5    */
00028 //              kPixelTypeRGB16_565     = 4,    /**<           R:5, G:6, B:5    */
00029                 kPixelTypeRGB24         = 5             
00030         } PixelType;
00031 
00035         IMG_Pixmap();
00036 
00040         virtual ~IMG_Pixmap();
00041 
00046         inline void* getDataPtr() const;
00047 
00052         inline TUns32 getWidth() const;
00053 
00058         inline TUns32 getHeight() const;
00059 
00064         inline void getBounds(IMG_Rect& r) const;
00065 
00070         inline PixelType getPixelType() const;
00071 
00077         inline void clamp(TInt32& x, TInt32& y) const;
00078 
00084         inline void clamp(float& u, float& v) const;
00085 
00094         inline void     getPixelAddress(float u, float v, TInt32& x, TInt32& y) const;
00095 
00102         //virtual void fillRect(const IMG_Rect& r, const IMG_ColorRGBA& c) = 0;
00103 
00104 protected:
00106         void*                   m_image;
00108         TUns32                  m_width;
00110         TUns32                  m_height;
00112         TUns32                  m_rowBytes;
00114         TUns32                  m_pixelSize;
00116         PixelType               m_pixelType;
00117 //      TEndian                 m_bitOrder;
00118 //      TEndian                 m_byteOrder;
00119 };
00120 
00121 inline void* IMG_Pixmap::getDataPtr() const
00122 {
00123         return m_image;
00124 }
00125 
00126 inline TUns32 IMG_Pixmap::getWidth() const
00127 {
00128         return m_width;
00129 }
00130 
00131 inline TUns32 IMG_Pixmap::getHeight() const
00132 {
00133         return m_height;
00134 }
00135 
00136 inline void IMG_Pixmap::getBounds(IMG_Rect& r) const
00137 {
00138         r.set(0, 0, m_width, m_height);
00139 }
00140 
00141 inline IMG_Pixmap::PixelType IMG_Pixmap::getPixelType() const
00142 {
00143         return m_pixelType;
00144 }
00145 
00146 inline void IMG_Pixmap::clamp(TInt32& x, TInt32& y) const
00147 {
00148         if (x < 0) x = 0;
00149         if (x > (TInt32)m_width) x = (TInt32)m_width;
00150         if (y < 0) y = 0;
00151         if (y > (TInt32)m_height) y = (TInt32)m_height;
00152 }
00153 
00154 inline void IMG_Pixmap::clamp(float& u, float& v) const
00155 {
00156         if (u < 0.f) u = 0.f;
00157         if (u > 1.f) u = 1.f;
00158         if (v < 0.f) v = 0.f;
00159         if (v > 1.f) v = 1.f;
00160 }
00161 
00162 inline void     IMG_Pixmap::getPixelAddress(float u, float v, TInt32& x, TInt32& y) const
00163 {
00164         x = (TInt32)(((float)m_width) * u);
00165         y = (TInt32)(((float)m_height) * v);
00166 }
00167 
00168 #endif // _H_IMG_Pixmap