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