bool color_picker::mouse_move( const point &p )
{
if ( _tracking )
{
point d = p.delta( center() );
coord_type h = std::atan2( d.y(), d.x() );
_current.set_hsl( h, 1.0, 0.5 );
invalidate();
return true;
}
return widget::mouse_move( p );
}
bool color_picker::mouse_press( const point &p, int b )
{
if ( b == 1 )
{
coord_type r = point::distance( p, center() ) / radius();
if ( r > 0.70 && r < 0.95 )
{
_tracking = true;
point d = p.delta( center() );
coord_type h = std::atan2( d.y(), d.x() );
_current.set_hsl( h, 1.0, 0.5 );
return mouse_move( p );
}
}
return widget::mouse_press( p, b );
}
