www.pudn.com > GdiplusTest16.zip > GdiPlusPixelFormats.h

/**************************************************************************\ 
* 
* Copyright (c) 1998-2001, Microsoft Corp.  All Rights Reserved. 
* 
* Module Name: 
* 
*   Gdiplus Pixel Formats 
* 
* Abstract: 
* 
*   GDI+ Pixel Formats 
* 
\**************************************************************************/ 
 
#ifndef _GDIPLUSPIXELFORMATS_H 
#define _GDIPLUSPIXELFORMATS_H 
 
typedef DWORD ARGB; 
typedef DWORDLONG ARGB64; 
 
#define ALPHA_SHIFT 24 
#define RED_SHIFT   16 
#define GREEN_SHIFT 8 
#define BLUE_SHIFT  0 
#define ALPHA_MASK  ((ARGB) 0xff << ALPHA_SHIFT) 
 
// In-memory pixel data formats: 
// bits 0-7 = format index 
// bits 8-15 = pixel size (in bits) 
// bits 16-23 = flags 
// bits 24-31 = reserved 
 
typedef INT PixelFormat; 
 
#define    PixelFormatIndexed      0x00010000 // Indexes into a palette 
#define    PixelFormatGDI          0x00020000 // Is a GDI-supported format 
#define    PixelFormatAlpha        0x00040000 // Has an alpha component 
#define    PixelFormatPAlpha       0x00080000 // Pre-multiplied alpha 
#define    PixelFormatExtended     0x00100000 // Extended color 16 bits/channel 
#define    PixelFormatCanonical    0x00200000  
 
#define    PixelFormatUndefined       0 
#define    PixelFormatDontCare        0 
 
#define    PixelFormat1bppIndexed     (1 | ( 1 << 8) | PixelFormatIndexed | PixelFormatGDI) 
#define    PixelFormat4bppIndexed     (2 | ( 4 << 8) | PixelFormatIndexed | PixelFormatGDI) 
#define    PixelFormat8bppIndexed     (3 | ( 8 << 8) | PixelFormatIndexed | PixelFormatGDI) 
#define    PixelFormat16bppGrayScale  (4 | (16 << 8) | PixelFormatExtended) 
#define    PixelFormat16bppRGB555     (5 | (16 << 8) | PixelFormatGDI) 
#define    PixelFormat16bppRGB565     (6 | (16 << 8) | PixelFormatGDI) 
#define    PixelFormat16bppARGB1555   (7 | (16 << 8) | PixelFormatAlpha | PixelFormatGDI) 
#define    PixelFormat24bppRGB        (8 | (24 << 8) | PixelFormatGDI) 
#define    PixelFormat32bppRGB        (9 | (32 << 8) | PixelFormatGDI) 
#define    PixelFormat32bppARGB       (10 | (32 << 8) | PixelFormatAlpha | PixelFormatGDI | PixelFormatCanonical) 
#define    PixelFormat32bppPARGB      (11 | (32 << 8) | PixelFormatAlpha | PixelFormatPAlpha | PixelFormatGDI) 
#define    PixelFormat48bppRGB        (12 | (48 << 8) | PixelFormatExtended) 
#define    PixelFormat64bppARGB       (13 | (64 << 8) | PixelFormatAlpha  | PixelFormatCanonical | PixelFormatExtended) 
#define    PixelFormat64bppPARGB      (14 | (64 << 8) | PixelFormatAlpha  | PixelFormatPAlpha | PixelFormatExtended) 
#define    PixelFormatMax             15 
 
inline UINT 
GetPixelFormatSize( 
                   PixelFormat pixfmt 
    ) 
{ 
    return (pixfmt >> 8) & 0xff; 
} 
 
inline BOOL 
IsIndexedPixelFormat( 
                     PixelFormat pixfmt 
    ) 
{ 
    return (pixfmt & PixelFormatIndexed) != 0; 
} 
 
inline BOOL 
IsAlphaPixelFormat( 
                     PixelFormat pixfmt 
) 
{ 
   return (pixfmt & PixelFormatAlpha) != 0; 
} 
 
inline BOOL 
IsExtendedPixelFormat( 
                     PixelFormat pixfmt 
    ) 
{ 
   return (pixfmt & PixelFormatExtended) != 0; 
} 
 
//-------------------------------------------------------------------------- 
// Determine if the Pixel Format is Canonical format: 
//   PixelFormat32bppARGB 
//   PixelFormat32bppPARGB 
//   PixelFormat64bppARGB 
//   PixelFormat64bppPARGB 
//-------------------------------------------------------------------------- 
 
inline BOOL 
IsCanonicalPixelFormat( 
                     PixelFormat pixfmt 
    ) 
{ 
   return (pixfmt & PixelFormatCanonical) != 0; 
} 
 
enum PaletteFlags 
{ 
    PaletteFlagsHasAlpha    = 0x0001, 
    PaletteFlagsGrayScale   = 0x0002, 
    PaletteFlagsHalftone    = 0x0004 
}; 
 
struct ColorPalette 
{ 
public: 
    UINT Flags;             // Palette flags 
    UINT Count;             // Number of color entries 
    ARGB Entries[1];        // Palette color entries 
}; 
 
#endif