gecko-dev/layout/base/nsCSSColorUtils.h
2004-04-18 14:30:37 +00:00

63 lines
2.7 KiB
C

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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#ifndef __nsCSSColorUtils_h
#define __nsCSSColorUtils_h
#include "nsColor.h"
// Weird color computing code stolen from winfe which was stolen
// from the xfe which was written originally by Eric Bina. So there.
// To determin colors based on the background brightness
void NS_Get3DColors(nscolor aResult[2], nscolor aBackgroundColor);
// To determine colors based on the background brightness and border color
void NS_GetSpecial3DColors(nscolor aResult[2],
nscolor aBackgroundColor,
nscolor aBorderColor);
// Determins brightness for a specific color
int NS_GetBrightness(PRUint8 aRed, PRUint8 aGreen, PRUint8 aBlue);
// function to convert from RGB color space to HSV color space
void NS_RGB2HSV(nscolor aColor,PRUint16 &aHue,PRUint16 &aSat,PRUint16 &aValue);
// function to convert from HSV color space to RGB color space
void NS_HSV2RGB(nscolor &aColor,PRUint16 aHue,PRUint16 aSat,PRUint16 aValue);
#endif