/**
* Calculates and returns the properties (width/height) of a thumbail/scaled image.
*
* Return value is an array containing calculated width/height and extension.
*
* @param sfFilebasePluginImage $fileinfo
* @param integer $new_width
* @param integer $new_height
* @throws sfFilebasePluginException
* @return array $thumbnail_properties
*/
public function getScaledImageData(sfFilebasePluginImage $image, array $dimensions)
{
$width = 0;
$height = 0;
$new_width = null;
$new_height = null;
// @todo, den check mach ich auch beim copyResampled. Hier nur gebraucht für filename
isset($dimensions[0]) && ($dimensions['width'] = $dimensions[0]);
isset($dimensions[1]) && ($dimensions['height'] = $dimensions[1]);
isset($dimensions['width']) && (int) $dimensions['width'] > 0 && ($new_width = $dimensions['width']);
isset($dimensions['height']) && (int) $dimensions['height'] > 0 && ($new_height = $dimensions['height']);
if ($new_width === null && $new_height === null) {
throw new sfFilebasePluginException('Dimensions are not properly set.');
}
$extension = $image->getExtension();
list($width, $height) = $image->getImagesize();
if ($new_height === null) {
$new_height = round($height * $new_width / $width);
} elseif ($new_width === null) {
$new_width = round($width * $new_height / $height);
}
return array('orig_width' => $width, 'orig_height' => $height, 'new_width' => $new_width, 'new_height' => $new_height, 'extension' => $extension, 'mime' => sfFilebasePluginUtil::getMimeType($image));
}
