<?php

class Qs_Validate_File_IsImage extends Zend_Validate_File_IsImage
{
    public function __construct($mimetype = array())
    {
        parent::__construct($mimetype);
        $_messageTemplates = array(
            self::FALSE_TYPE   => "The uploaded file is not an image",
            self::NOT_DETECTED => "The type of uploaded file has not been detected",
            self::NOT_READABLE => "The uploaded file can not be read"
        );
        $this->_messageTemplates = array_merge($this->_messageTemplates, $_messageTemplates);

        $mimeTypes = $this->getMimeType(true);

        if (!in_array('image/pjpeg', $mimeTypes)) {
            $mimeTypes[] = 'image/pjpeg';
            $mimeTypes[] = 'image/bmp';
        }

        // Tiff and Psd is not an image because it do not display in the browser
        $excludeMimeTypes = array('image/tiff', 'image/vnd.adobe.photoshop');
        foreach ($excludeMimeTypes as $mimeType) {
            if (false !== ($index = array_search($mimeType, $mimeTypes))) {
                unset($mimeTypes[$index]);
            }
        }

        foreach($mimeTypes as $type) {
            $mimeTypes[] = $type . '; charset=binary';
        }
        $this->setMimeType($mimeTypes);
    }
}