/**
* Apply the transformation to the image and returns the image thumbnail
*/
protected function transform(sfImage $image)
{
$resource_w = $image->getWidth();
$resource_h = $image->getHeight();
$scale_w = $this->getWidth() / $resource_w;
$scale_h = $this->getHeight() / $resource_h;
$method = $this->getMethod();
switch ($method) {
case 'deflate':
case 'inflate':
return $image->resize($this->getWidth(), $this->getHeight());
case 'left':
case 'right':
case 'top':
case 'bottom':
case 'top-left':
case 'top-right':
case 'bottom-left':
case 'bottom-right':
case 'center':
$image->scale(max($scale_w, $scale_h));
if (false !== strstr($method, 'top')) {
$top = 0;
} else {
if (false !== strstr($method, 'bottom')) {
$top = $image->getHeight() - $this->getHeight();
} else {
$top = (int) round(($image->getHeight() - $this->getHeight()) / 2);
}
}
if (false !== strstr($method, 'left')) {
$left = 0;
} else {
if (false !== strstr($method, 'right')) {
$left = $image->getWidth() - $this->getWidth();
} else {
$left = (int) round(($image->getWidth() - $this->getWidth()) / 2);
}
}
return $image->crop($left, $top, $this->getWidth(), $this->getHeight());
case 'scale':
return $image->scale(min($scale_w, $scale_h));
case 'fit':
default:
$img = clone $image;
$image->create($this->getWidth(), $this->getHeight());
// Set a background color if specified
if (!is_null($this->getBackground()) && $this->getBackground() != '') {
$image->fill(0, 0, $this->getBackground());
}
$img->scale(min($this->getWidth() / $img->getWidth(), $this->getHeight() / $img->getHeight()));
$image->overlay($img, 'center');
return $image;
}
}