/**
* Checks image is square.
*
* @param T_Image_Gd $value image to filter
* @return mixed filtered value
*/
protected function doTransform($value)
{
if ($value->getWidth() !== $value->getHeight()) {
$msg = "must be square (i.e. width equal to height)";
throw new T_Exception_Filter($msg);
}
return $value;
}
/**
* Checks image is within height range.
*
* @param T_Image_Gd $value image to filter
* @return mixed filtered value
*/
protected function doTransform($value)
{
if (!is_null($this->min) && $value->getHeight() < $this->min) {
$msg = "is too small an image. The minimum height is {$this->min} pixels";
throw new T_Exception_Filter($msg);
}
if (!is_null($this->max) && $value->getHeight() > $this->max) {
$msg = "is too big an image. The maximum height is {$this->max} pixels";
throw new T_Exception_Filter($msg);
}
return $value;
}
/**
* Checks image is within width range.
*
* @param T_Image_Gd $value image to filter
* @return mixed filtered value
*/
protected function doTransform($value)
{
$aspect = $value->getWidth() / $value->getHeight();
if (!is_null($this->min) && $aspect < $this->min) {
$min = round($this->min, 2);
$msg = "has too small an aspect ratio (width/height). The minimum is {$min}";
throw new T_Exception_Filter($msg);
}
if (!is_null($this->max) && $aspect > $this->max) {
$max = round($this->max, 2);
$msg = "has too large an aspect ratio (width/height). The minimum is {$max}";
throw new T_Exception_Filter($msg);
}
return $value;
}
function testResizeBothDimsTooBigBothConstrained()
{
$im = new T_Image_Gd(100, 200);
$new = $im->resize(50, 100);
$this->assertSame($new->getWidth(), 50);
$this->assertSame($new->getHeight(), 100);
}
