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/**************************************************************************\
*
* Copyright (c) 1998-2000, Microsoft Corp. All Rights Reserved.
*
* Module Name:
*
* GdiplusColor.h
*
* Abstract:
*
* Represents a GDI+ color.
*
\**************************************************************************/
#ifndef _GDIPLUSCOLOR_H
#define _GDIPLUSCOLOR_H
//----------------------------------------------------------------------------
// Color mode
//----------------------------------------------------------------------------
enum ColorMode
{
ColorModeARGB32 = 0,
ColorModeARGB64 = 1
};
//----------------------------------------------------------------------------
// Color Channel flags
//----------------------------------------------------------------------------
enum ColorChannelFlags
{
ColorChannelFlagsC = 0,
ColorChannelFlagsM,
ColorChannelFlagsY,
ColorChannelFlagsK,
ColorChannelFlagsLast
};
//----------------------------------------------------------------------------
// Color
//----------------------------------------------------------------------------
class Color
{
public:
Color()
{
Argb = (ARGB)Color::Black;
}
// Construct an opaque Color object with
// the specified R, G, B values.
Color(IN BYTE r,
IN BYTE g,
IN BYTE b)
{
Argb = MakeARGB(255, r, g, b);
}
// Construct a Color object with
// the specified A, R, G, B values.
//
// NOTE: R, G, B color values are not premultiplied.
Color(IN BYTE a,
IN BYTE r,
IN BYTE g,
IN BYTE b)
{
Argb = MakeARGB(a, r, g, b);
}
// Construct a Color object with
// the specified ARGB values.
//
// NOTE: R, G, B color components are not premultiplied.
Color(IN ARGB argb)
{
Argb = argb;
}
// Extract A, R, G, B components
BYTE GetAlpha() const
{
return (BYTE) (Argb >> AlphaShift);
}
BYTE GetA() const
{
return GetAlpha();
}
BYTE GetRed() const
{
return (BYTE) (Argb >> RedShift);
}
BYTE GetR() const
{
return GetRed();
}
BYTE GetGreen() const
{
return (BYTE) (Argb >> GreenShift);
}
BYTE GetG() const
{
return GetGreen();
}
BYTE GetBlue() const
{
return (BYTE) (Argb >> BlueShift);
}
BYTE GetB() const
{
return GetBlue();
}
// Retrieve ARGB values
ARGB GetValue() const
{
return Argb;
}
VOID SetValue(IN ARGB argb)
{
Argb = argb;
}
VOID SetFromCOLORREF(IN COLORREF rgb)
{
Argb = MakeARGB(255, GetRValue(rgb), GetGValue(rgb), GetBValue(rgb));
}
COLORREF ToCOLORREF() const
{
return RGB(GetRed(), GetGreen(), GetBlue());
}
public:
// Standard color constants
enum
{
Black = 0xff000000,
Silver = 0xffc0c0c0,
Gray = 0xff808080,
White = 0xffffffff,
Maroon = 0xff800000,
Red = 0xffff0000,
Purple = 0xff800080,
Fuchsia = 0xffff00ff,
Green = 0xff008000,
Lime = 0xff00ff00,
Olive = 0xff808000,
Yellow = 0xffffff00,
Navy = 0xff000080,
Blue = 0xff0000ff,
Teal = 0xff008080,
Aqua = 0xff00ffff
};
// Shift count and bit mask for A, R, G, B components
enum
{
AlphaShift = 24,
RedShift = 16,
GreenShift = 8,
BlueShift = 0
};
enum
{
AlphaMask = 0xff000000,
RedMask = 0x00ff0000,
GreenMask = 0x0000ff00,
BlueMask = 0x000000ff
};
// Assemble A, R, G, B values into a 32-bit integer
static ARGB MakeARGB(IN BYTE a,
IN BYTE r,
IN BYTE g,
IN BYTE b)
{
return (((ARGB) (b) << BlueShift) |
((ARGB) (g) << GreenShift) |
((ARGB) (r) << RedShift) |
((ARGB) (a) << AlphaShift));
}
protected:
ARGB Argb;
};
#endif
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