/**
* Loads a GD resource from any of the following:
*
* Img object : $test= new Img('/images/myimage.png');
* GD resource : imagecreatefrompng('/images/myimage.png')
* Filepath : '/images/myimage.png', '/images/myimage.dat', '/images/myimagebase64.dat'
* URL : 'http://www.myserver.com/images/myimage.jpg'
* dataURI : 'data:image/png;charset=utf-8;base64,VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw=='
* binary string : file_get_contents()
* base64 raw string : 'VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw=='
*
* @param mixed $image Various types of image source data.
* @return resource GD image resource.
*/
private function GD_create($image)
{
# Init from another Img object
if (is_a($image, 'AlpTools\\Img')) {
$this->type = $image->type;
$this->src_image = $image->src_image;
$this->src_filename = $image->src_filename;
$this->dst_filename = $image->dst_filename;
return $this->clone_resource($image->img);
} elseif (is_resource($image)) {
$this->type = imagecolortransparent($image) > -1 ? IMAGETYPE_GIF : IMAGETYPE_PNG;
$this->src_image = $this->src_filename = $this->dst_filename = $image . '';
return $this->clone_resource($image);
} elseif (@file_exists($image) || (bool) filter_var($image, FILTER_VALIDATE_URL)) {
$this->src_filename = $this->dst_filename = File::get_filename($image);
$this->src_image = $image;
$info = getimagesize($image);
# Init from normal/binary file
if ($info) {
$this->type = $info[2];
return imagecreatefromstring(file_get_contents($image));
} else {
$image = base64_decode(file_get_contents($image));
$type = finfo_buffer(finfo_open(FILEINFO_MIME_TYPE), $image);
if (strpos($this->type, 'text') !== 0 && $this->type != 'application/x-empty') {
# For constructor calls
$this->type = $this->get_mime($type);
return imagecreatefromstring($image);
}
}
} elseif (is_string($image)) {
# Store the original source on constructor calls
$this->src_image = $image;
# Init from binary data: file_get_contents()
$type = finfo_buffer(finfo_open(FILEINFO_MIME_TYPE), $image);
if (strpos($type, 'text') !== 0 && $type != 'application/x-empty') {
$this->src_filename = $this->dst_filename = 'binary_' . hash('md5', $image);
$this->type = $this->get_mime($type);
return imagecreatefromstring($image);
}
# Init from data URI: 'data:image/png;charset=utf-8;base64,VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw=='
$info = File::uri_info($image);
if ($info) {
$this->src_filename = $this->dst_filename = 'dataURI_' . hash('md5', $info['data']);
$this->type = $this->get_mime($info['mime']);
return imagecreatefromstring(base64_decode($info['data']));
} else {
$base = base64_decode(str_replace(' ', '+', $image), true);
if (base64_encode($base) === $image) {
$this->src_filename = $this->dst_filename = 'base64_' . hash('md5', $base);
$this->type = $this->get_mime(finfo_buffer(finfo_open(FILEINFO_MIME_TYPE), $base));
return imagecreatefromstring($base);
} else {
return $this->text_image($text);
}
}
}
throw new \Exception(__NAMESPACE__ . __CLASS__ . ": Could not load GD resource. Invalid or unsupported source data.");
# Something went wrong, stop processing
return false;
}
