Файл: protected/extensions/image/drivers/Image_ImageMagick_Driver.php
Строк: 170
<?php
/**
* ImageMagick Image Driver.
*
* $Id: ImageMagick.php 3769 2008-12-15 00:48:56Z zombor $
*
* @package Image
* @author Kohana Team
* @copyright (c) 2007-2008 Kohana Team
* @license http://kohanaphp.com/license.html
*/
class Image_ImageMagick_Driver extends Image_Driver {
// Directory that IM is installed in
protected $dir = '';
// Command extension (exe for windows)
protected $ext = '';
// Temporary image filename
protected $tmp_image;
/**
* Attempts to detect the ImageMagick installation directory.
*
* @throws Kohana_Exception
* @param array configuration
* @return void
*/
public function __construct($config)
{
if (empty($config['directory']))
{
// Attempt to locate IM by using "which" (only works for *nix!)
if ( ! is_file($path = exec('which convert')))
throw new CException('image imagemagick not_found');
$config['directory'] = dirname($path);
}
// Set the command extension
$this->ext = (PHP_SHLIB_SUFFIX === 'dll') ? '.exe' : '';
// Check to make sure the provided path is correct
if ( ! is_file(realpath($config['directory']).'/convert'.$this->ext))
throw new CException('image imagemagick not_found');
// Set the installation directory
$this->dir = str_replace('\', '/', realpath($config['directory'])).'/';
}
/**
* Creates a temporary image and executes the given actions. By creating a
* temporary copy of the image before manipulating it, this process is atomic.
*/
public function process($image, $actions, $dir, $file, $render = FALSE)
{
// We only need the filename
$image = $image['file'];
// Unique temporary filename
$this->tmp_image = $dir.'k2img--'.sha1(time().$dir.$file).substr($file, strrpos($file, '.'));
// Copy the image to the temporary file
copy($image, $this->tmp_image);
// Quality change is done last
$quality = (int) CArray::remove('quality', $actions);
// Use 95 for the default quality
empty($quality) and $quality = 95;
// All calls to these will need to be escaped, so do it now
$this->cmd_image = escapeshellarg($this->tmp_image);
$this->new_image = ($render)? $this->cmd_image : escapeshellarg($dir.$file);
if ($status = $this->execute($actions))
{
// Use convert to change the image into its final version. This is
// done to allow the file type to change correctly, and to handle
// the quality conversion in the most effective way possible.
if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' -quality '.$quality.'% '.$this->cmd_image.' '.$this->new_image))
{
$this->errors[] = $error;
}
else
{
// Output the image directly to the browser
if ($render !== FALSE)
{
$contents = file_get_contents($this->tmp_image);
switch (substr($file, strrpos($file, '.') + 1))
{
case 'jpg':
case 'jpeg':
header('Content-Type: image/jpeg');
break;
case 'gif':
header('Content-Type: image/gif');
break;
case 'png':
header('Content-Type: image/png');
break;
}
echo $contents;
}
}
}
// Remove the temporary image
unlink($this->tmp_image);
$this->tmp_image = '';
return $status;
}
public function crop($prop)
{
// Sanitize and normalize the properties into geometry
$this->sanitize_geometry($prop);
// Set the IM geometry based on the properties
$geometry = escapeshellarg($prop['width'].'x'.$prop['height'].'+'.$prop['left'].'+'.$prop['top']);
if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' -crop '.$geometry.' '.$this->cmd_image.' '.$this->cmd_image))
{
$this->errors[] = $error;
return FALSE;
}
return TRUE;
}
public function flip($dir)
{
// Convert the direction into a IM command
$dir = ($dir === Image::HORIZONTAL) ? '-flop' : '-flip';
if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' '.$dir.' '.$this->cmd_image.' '.$this->cmd_image))
{
$this->errors[] = $error;
return FALSE;
}
return TRUE;
}
public function resize($prop)
{
switch ($prop['master'])
{
case Image::WIDTH: // Wx
$dim = escapeshellarg($prop['width'].'x');
break;
case Image::HEIGHT: // xH
$dim = escapeshellarg('x'.$prop['height']);
break;
case Image::AUTO: // WxH
$dim = escapeshellarg($prop['width'].'x'.$prop['height']);
break;
case Image::NONE: // WxH!
$dim = escapeshellarg($prop['width'].'x'.$prop['height'].'!');
break;
}
// Use "convert" to change the width and height
if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' -resize '.$dim.' '.$this->cmd_image.' '.$this->cmd_image))
{
$this->errors[] = $error;
return FALSE;
}
return TRUE;
}
public function rotate($amt)
{
if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' -rotate '.escapeshellarg($amt).' -background transparent '.$this->cmd_image.' '.$this->cmd_image))
{
$this->errors[] = $error;
return FALSE;
}
return TRUE;
}
public function sharpen($amount)
{
// Set the sigma, radius, and amount. The amount formula allows a nice
// spread between 1 and 100 without pixelizing the image badly.
$sigma = 0.5;
$radius = $sigma * 2;
$amount = round(($amount / 80) * 3.14, 2);
// Convert the amount to an IM command
$sharpen = escapeshellarg($radius.'x'.$sigma.'+'.$amount.'+0');
if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' -unsharp '.$sharpen.' '.$this->cmd_image.' '.$this->cmd_image))
{
$this->errors[] = $error;
return FALSE;
}
return TRUE;
}
protected function properties()
{
return array_slice(getimagesize($this->tmp_image), 0, 2, FALSE);
}
} // End Image ImageMagick Driver