/**
* Returns an instance of self
*
* This is the usual singleton function that returns / instantiates the object
*
* @return PhpThumb
*/
public static function getInstance()
{
if (!self::$_instance instanceof self) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* Factory Function
*
* This function returns the correct thumbnail object, augmented with any appropriate plugins.
* It does so by doing the following:
* - Getting an instance of PhpThumb
* - Loading plugins
* - Validating the default implemenation
* - Returning the desired default implementation if possible
* - Returning the GD implemenation if the default isn't available
* - Throwing an exception if no required libraries are present
*
* @return GdThumb
* @uses PhpThumb
* @param string $filename The path and file to load [optional]
*/
public static function create($filename = null, $options = array(), $isDataStream = false)
{
// map our implementation to their class names
$implementationMap = array('imagick' => 'Thumbnailer_ImagickThumb', 'gd' => 'Thumbnailer_GdThumb');
// grab an instance of PhpThumb
$pt = Thumbnailer_PhpThumb::getInstance();
// load the plugins
$pt->loadPlugins(self::$pluginPath);
$toReturn = null;
$implementation = self::$defaultImplemenation;
// attempt to load the default implementation
if ($pt->isValidImplementation(self::$defaultImplemenation)) {
$imp = $implementationMap[self::$defaultImplemenation];
$toReturn = new $imp($filename, $options, $isDataStream);
} else {
if ($pt->isValidImplementation('gd')) {
$imp = $implementationMap['gd'];
$implementation = 'gd';
$toReturn = new $imp($filename, $options, $isDataStream);
} else {
throw new Exception('You must have either the GD or iMagick extension loaded to use this library');
}
}
$registry = $pt->getPluginRegistry($implementation);
$toReturn->importPlugins($registry);
return $toReturn;
}
imagecopy($this->workingImage, $this->workingImage, $x, $y_i - $y - 1, $x, $y, 1, 1);
}
}
}
/**
* Converts a hex color to rgb tuples
*
* @return mixed
* @param string $hex
* @param bool $asString
*/
protected function hex2rgb($hex, $asString = false)
{
// strip off any leading #
if (0 === strpos($hex, '#')) {
$hex = substr($hex, 1);
} elseif (0 === strpos($hex, '&H')) {
$hex = substr($hex, 2);
}
// break into hex 3-tuple
$cutpoint = ceil(strlen($hex) / 2) - 1;
$rgb = explode(':', wordwrap($hex, $cutpoint, ':', $cutpoint), 3);
// convert each tuple to decimal
$rgb[0] = isset($rgb[0]) ? hexdec($rgb[0]) : 0;
$rgb[1] = isset($rgb[1]) ? hexdec($rgb[1]) : 0;
$rgb[2] = isset($rgb[2]) ? hexdec($rgb[2]) : 0;
return $asString ? "{$rgb[0]} {$rgb[1]} {$rgb[2]}" : $rgb;
}
}
$pt = Thumbnailer_PhpThumb::getInstance();
$pt->registerPlugin('Thumbnailer_GdReflectionLib', 'gd');