/**
* Invert color from an image ressource.
*
* @param ressource $image Image
* "param string $color ID of a filter
*/
public static function applyFilter($image, $color)
{
if ($color == 'black') {
ImageUtil::addInvertFilter($image);
} else {
if ($color == 'gray') {
ImageUtil::addGrayFilter($image);
} else {
if ($color == 'blue') {
self::addColorFilter($image, array(40, 79, 148));
} else {
if ($color == 'red') {
self::addColorFilter($image, array(214, 17, 2));
} else {
if ($color == 'orange') {
self::addColorFilter($image, array(222, 54, 0));
} else {
if ($color == 'turquoise') {
self::addColorFilter($image, array(69, 168, 196));
} else {
if ($color == 'trans') {
self::addTransFilter($image);
} else {
if ($color == 'white') {
return;
} else {
throw new Exception("Unknown filter.");
}
}
}
}
}
}
}
}
}
