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<?php
/*
* Copyright 2015 Florian "Bluewind" Pritz <bluewind@server-speed.net>
*
* Licensed under AGPLv3
* (see COPYING for full license text)
*
*/
namespace libraries\Image\Drivers;
class imagemagick implements \libraries\Image\ImageDriver {
private $source_file;
private $arguments = array();
public static function get_priority($mimetype)
{
$mimetype = $mimetype;
$base = explode("/", $mimetype)[0];
if ($base == "image"
|| in_array($mimetype, array("application/pdf"))) {
return 100;
}
return -1;
}
/**
* Create a new object and load the contents of file.
* @param file file to read
*/
public function __construct($file)
{
$this->read($file);
}
public function read($file)
{
if (!file_exists($file)) {
throw new \exceptions\ApiException("libraries/Image/drivers/imagemagick/missing-file", "Source file doesn't exist");
}
$this->source_file = $file;
$this->arguments = array();
}
public function get($target_type = null)
{
if ($target_type === null) {
return file_get_contents($this->source_file);
}
$command = array("convert");
$command = array_merge($command, $this->arguments);
$command[] = $this->source_file."[0]";
switch ($target_type) {
case IMAGETYPE_GIF:
$command[] = "gif:-";
break;
case IMAGETYPE_JPEG:
$command[] = "jpeg:-";
break;
case IMAGETYPE_PNG:
$command[] = "png:-";
break;
default:
assert(0);
}
try {
$ret = (new \libraries\ProcRunner($command))->forbid_nonzero()->exec();
} catch (\exceptions\ApiException $e) {
throw new \exceptions\ApiException("libraries/Image/thumbnail-creation-failed", "Failed to create thumbnail", null, $e);
}
return $ret["stdout"];
}
public function resize($width, $height)
{
$this->arguments[] = "-resize";
$this->arguments[] = "${width}x${height}";
}
public function crop($x, $y, $width, $height)
{
$this->arguments[] = "+repage";
$this->arguments[] = "-crop";
$this->arguments[] = "${width}x${height}+${x}+${y}";
$this->arguments[] = "+repage";
}
// Source: http://salman-w.blogspot.co.at/2009/04/crop-to-fit-image-using-aspphp.html
public function makeThumb($target_width, $target_height)
{
assert(is_int($target_width));
assert(is_int($target_height));
$this->apply_exif_orientation();
$this->arguments[] = "-thumbnail";
$this->arguments[] = "${target_width}x${target_height}^";
$this->arguments[] = "-gravity";
$this->arguments[] = "center";
$this->arguments[] = "-extent";
$this->arguments[] = "${target_width}x${target_height}^";
}
public function apply_exif_orientation()
{
$this->arguments[] = "-auto-orient";
}
public function mirror()
{
$this->arguments[] = "-flip";
}
}
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