// Check the luminance and return true if this colour
// nearer to black than white and vice versa.
bool CColour::NearBlack()
{
int h,s,l;
GetHSL(h,s,l);
return ( (l < 120) ? true : false );
}
void CColour::Lighten(int Amount /* = 1 */)
{
int h,s,l;
GetHSL(h,s,l);
l += Amount;
if (l > 240)
l = 240;
SetHSL(h,s,l);
}
void CColour::Darken(int Amount /* = 1 */)
{
int h,s,l;
GetHSL(h,s,l);
l -= Amount;
if (l < 0)
l = 0;
SetHSL(h,s,l);
}
float wxColourExt::HslLuminosity() const
{
GetHSL(&H0, &S0, &L0);
return L0;
}
float wxColourExt::HslSaturation() const
{
GetHSL(&H0, &S0, &L0);
return S0;
}
float wxColourExt::HslHue() const
{
GetHSL(&H0, &S0, &L0);
return H0;
}