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Rename 'kohana' to 'system' to conform to the Kohana filesystem layout. I'm comfortable with us not clearly drawing the distinction about the fact that it's Kohana.
This commit is contained in:
Bharat Mediratta
221
system/libraries/drivers/Image/GraphicsMagick.php
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221
system/libraries/drivers/Image/GraphicsMagick.php
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<?php defined('SYSPATH') OR die('No direct access allowed.');
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/**
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* GraphicsMagick Image Driver.
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*
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* @package Image
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* @author Kohana Team
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* @copyright (c) 2007-2008 Kohana Team
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* @license http://kohanaphp.com/license.html
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*/
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class Image_GraphicsMagick_Driver extends Image_Driver {
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// Directory that GM is installed in
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protected $dir = '';
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// Command extension (exe for windows)
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protected $ext = '';
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// Temporary image filename
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protected $tmp_image;
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/**
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* Attempts to detect the GraphicsMagick installation directory.
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*
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* @throws Kohana_Exception
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* @param array configuration
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* @return void
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*/
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public function __construct($config)
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{
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if (empty($config['directory']))
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{
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// Attempt to locate GM by using "which" (only works for *nix!)
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if ( ! is_file($path = exec('which gm')))
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throw new Kohana_Exception('image.graphicsmagick.not_found');
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$config['directory'] = dirname($path);
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}
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// Set the command extension
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$this->ext = (PHP_SHLIB_SUFFIX === 'dll') ? '.exe' : '';
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// Check to make sure the provided path is correct
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if ( ! is_file(realpath($config['directory']).'/gm'.$this->ext))
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throw new Kohana_Exception('image.graphicsmagick.not_found', 'gm'.$this->ext);
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// Set the installation directory
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$this->dir = str_replace('\\', '/', realpath($config['directory'])).'/';
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}
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/**
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* Creates a temporary image and executes the given actions. By creating a
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* temporary copy of the image before manipulating it, this process is atomic.
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*/
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public function process($image, $actions, $dir, $file, $render = FALSE)
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{
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// We only need the filename
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$image = $image['file'];
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// Unique temporary filename
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$this->tmp_image = $dir.'k2img--'.sha1(time().$dir.$file).substr($file, strrpos($file, '.'));
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// Copy the image to the temporary file
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copy($image, $this->tmp_image);
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// Quality change is done last
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$quality = (int) arr::remove('quality', $actions);
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// Use 95 for the default quality
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empty($quality) and $quality = 95;
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// All calls to these will need to be escaped, so do it now
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$this->cmd_image = escapeshellarg($this->tmp_image);
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$this->new_image = ($render)? $this->cmd_image : escapeshellarg($dir.$file);
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if ($status = $this->execute($actions))
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{
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// Use convert to change the image into its final version. This is
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// done to allow the file type to change correctly, and to handle
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// the quality conversion in the most effective way possible.
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if ($error = exec(escapeshellcmd($this->dir.'gm'.$this->ext.' convert').' -quality '.$quality.'% '.$this->cmd_image.' '.$this->new_image))
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{
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$this->errors[] = $error;
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}
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else
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{
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// Output the image directly to the browser
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if ($render !== FALSE)
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{
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$contents = file_get_contents($this->tmp_image);
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switch (substr($file, strrpos($file, '.') + 1))
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{
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case 'jpg':
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case 'jpeg':
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header('Content-Type: image/jpeg');
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break;
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case 'gif':
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header('Content-Type: image/gif');
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break;
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case 'png':
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header('Content-Type: image/png');
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break;
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}
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echo $contents;
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}
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}
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}
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// Remove the temporary image
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unlink($this->tmp_image);
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$this->tmp_image = '';
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return $status;
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}
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public function crop($prop)
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{
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// Sanitize and normalize the properties into geometry
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$this->sanitize_geometry($prop);
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// Set the IM geometry based on the properties
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$geometry = escapeshellarg($prop['width'].'x'.$prop['height'].'+'.$prop['left'].'+'.$prop['top']);
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if ($error = exec(escapeshellcmd($this->dir.'gm'.$this->ext.' convert').' -crop '.$geometry.' '.$this->cmd_image.' '.$this->cmd_image))
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{
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$this->errors[] = $error;
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return FALSE;
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}
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return TRUE;
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}
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public function flip($dir)
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{
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// Convert the direction into a GM command
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$dir = ($dir === Image::HORIZONTAL) ? '-flop' : '-flip';
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if ($error = exec(escapeshellcmd($this->dir.'gm'.$this->ext.' convert').' '.$dir.' '.$this->cmd_image.' '.$this->cmd_image))
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{
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$this->errors[] = $error;
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return FALSE;
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}
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return TRUE;
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}
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public function resize($prop)
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{
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switch ($prop['master'])
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{
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case Image::WIDTH: // Wx
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$dim = escapeshellarg($prop['width'].'x');
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break;
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case Image::HEIGHT: // xH
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$dim = escapeshellarg('x'.$prop['height']);
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break;
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case Image::AUTO: // WxH
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$dim = escapeshellarg($prop['width'].'x'.$prop['height']);
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break;
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case Image::NONE: // WxH!
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$dim = escapeshellarg($prop['width'].'x'.$prop['height'].'!');
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break;
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}
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// Use "convert" to change the width and height
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if ($error = exec(escapeshellcmd($this->dir.'gm'.$this->ext.' convert').' -resize '.$dim.' '.$this->cmd_image.' '.$this->cmd_image))
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{
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$this->errors[] = $error;
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return FALSE;
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}
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return TRUE;
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}
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public function rotate($amt)
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{
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if ($error = exec(escapeshellcmd($this->dir.'gm'.$this->ext.' convert').' -rotate '.escapeshellarg($amt).' -background transparent '.$this->cmd_image.' '.$this->cmd_image))
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{
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$this->errors[] = $error;
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return FALSE;
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}
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return TRUE;
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}
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public function sharpen($amount)
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{
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// Set the sigma, radius, and amount. The amount formula allows a nice
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// spread between 1 and 100 without pixelizing the image badly.
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$sigma = 0.5;
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$radius = $sigma * 2;
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$amount = round(($amount / 80) * 3.14, 2);
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// Convert the amount to an GM command
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$sharpen = escapeshellarg($radius.'x'.$sigma.'+'.$amount.'+0');
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if ($error = exec(escapeshellcmd($this->dir.'gm'.$this->ext.' convert').' -unsharp '.$sharpen.' '.$this->cmd_image.' '.$this->cmd_image))
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{
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$this->errors[] = $error;
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return FALSE;
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}
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return TRUE;
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}
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public function composite($properties)
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{
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if ($error = exec(escapeshellcmd($this->dir.'gm'.$this->ext.' composite').' -geometry ' . escapeshellarg('+'.$properties['x'].'+'.$properties['y']).' -dissolve '.escapeshellarg($properties['transparency']).' '.escapeshellarg($properties['overlay_file']).' '.$this->cmd_image.' '.$this->cmd_image))
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{
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$this->errors[] = $error;
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return FALSE;
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}
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return TRUE;
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}
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protected function properties()
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{
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return array_slice(getimagesize($this->tmp_image), 0, 2, FALSE);
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}
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} // End Image GraphicsMagick Driver
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