File Source for IM.php

<?php
/***********************************************************************
** Title.........: ImageMagick Driver
** Version.......: 1.0
** Author........: Xiang Wei ZHUO <wei@zhuo.org>
** Filename......: IM.php
** Last changed..: 30 Aug 2003
** Notes.........: Orginal is from PEAR
**/
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2002 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Peter Bowyer <peter@mapledesign.co.uk> |
// +----------------------------------------------------------------------+
//
// $Id: IM.php 26 2004-03-31 02:35:21Z Wei Zhuo $
//
// Image Transformation interface using command line ImageMagick
//
require_once "Transform.php";
Class Image_Transform_Driver_IM extends Image_Transform
{
/**
* associative array commands to be executed
* @var array
*/
var $command = array();
/**
*
*
*/
function Image_Transform_Driver_IM()
{
return true;
} // End Image_IM
/**
* Load image
*
* @param string filename
*
* @return mixed none or a PEAR error object on error
* @see PEAR::isError()
*/
function load($image)
{
$this->uid = md5($_SERVER['REMOTE_ADDR']);
/*if (!file_exists($image)) {
return PEAR::raiseError('The image file ' . $image . ' does\'t exist', true);
}*/
$this->image = $image;
$this->_get_image_details($image);
} // End load
/**
* Resize Action
*
* @param int new_x new width
* @param int new_y new height
*
* @return none
* @see PEAR::isError()
*/
function _resize($new_x, $new_y)
{
/*if (isset($this->command['resize'])) {
return PEAR::raiseError("You cannot scale or resize an image more than once without calling save or display", true);
}*/
$this->command['resize'] = "-geometry ${new_x}x${new_y}!";
$this->new_x = $new_x;
$this->new_y = $new_y;
} // End resize
/**
* Crop the image
*
* @param int $crop_x left column of the image
* @param int $crop_y top row of the image
* @param int $crop_width new cropped image width
* @param int $crop_height new cropped image height
*/
function crop($crop_x, $crop_y, $crop_width, $crop_height)
{
$this->command['crop'] = "-crop {$crop_width}x{$crop_height}+{$crop_x}+{$crop_y}";
}
/**
* Flip the image horizontally or vertically
*
* @param boolean $horizontal true if horizontal flip, vertical otherwise
*/
function flip($horizontal)
{
if($horizontal)
$this->command['flop'] = "-flop";
else
$this->command['flip'] = "-flip";
}
/**
* rotate
*
* @param int angle rotation angle
* @param array options no option allowed
*
*/
function rotate($angle, $options=null)
{
if ('-' == $angle{0}) {
$angle = 360 - substr($angle, 1);
}
$this->command['rotate'] = "-rotate $angle";
} // End rotate
/**
* addText
*
* @param array options Array contains options
* array(
* 'text' The string to draw
* 'x' Horizontal position
* 'y' Vertical Position
* 'Color' Font color
* 'font' Font to be used
* 'size' Size of the fonts in pixel
* 'resize_first' Tell if the image has to be resized
* before drawing the text
* )
*
* @return none
* @see PEAR::isError()
*/
function addText($params)
{
$default_params = array(
'text' => 'This is Text',
'x' => 10,
'y' => 20,
'color' => 'red',
'font' => 'Arial.ttf',
'resize_first' => false // Carry out the scaling of the image before annotation?
);
$params = array_merge($default_params, $params);
extract($params);
if (true === $resize_first) {
// Set the key so that this will be the last item in the array
$key = 'ztext';
} else {
$key = 'text';
}
$this->command[$key] = "-font $font -fill $color -draw 'text $x,$y \"$text\"'";
// Producing error: gs: not found gs: not found convert: Postscript delegate failed [No such file or directory].
} // End addText
/**
* Adjust the image gamma
*
* @param float $outputgamma
*
* @return none
*/
function gamma($outputgamma=1.0) {
$this->command['gamma'] = "-gamma $outputgamma";
}
/**
* Save the image file
*
* @param $filename string the name of the file to write to
* @param $quality quality image dpi, default=75
* @param $type string (JPG,PNG...)
*
* @return none
*/
function save($filename, $type='', $quality = 85)
{
$type == '' ? $this->type : $type;
$cmd = '' . IMAGE_TRANSFORM_LIB_PATH . 'convert ';
$cmd .= implode(' ', $this->command) . " -quality $quality ";
$cmd .= '"'.($this->image) . '" "' . ($filename) . '" 2>&1';
//$cmd = str_replace('/', '\\', $cmd);
//echo($cmd.'<br>');
exec($cmd,$retval);
} // End save
/**
* Display image without saving and lose changes
*
* @param string type (JPG,PNG...);
* @param int quality 75
*
* @return none
*/
function display($type = '', $quality = 75)
{
if ($type == '') {
header('Content-type: image/' . $this->type);
passthru(IMAGE_TRANSFORM_LIB_PATH . 'convert ' . implode(' ', $this->command) . " -quality $quality " . escapeshellarg($this->image) . ' ' . strtoupper($this->type) . ":-");
} else {
header('Content-type: image/' . $type);
passthru(IMAGE_TRANSFORM_LIB_PATH . 'convert ' . implode(' ', $this->command) . " -quality $quality " . escapeshellarg($this->image) . ' ' . strtoupper($type) . ":-");
}
}
/**
* Destroy image handle
*
* @return none
*/
function free()
{
return true;
}
} // End class ImageIM
?>

Source for file IM.php