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255 lines
8.0 KiB
PHP
Executable File
255 lines
8.0 KiB
PHP
Executable File
<?php
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/***********************************************************************
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** Title.........: NetPBM Driver
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** Version.......: 1.0
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** Author........: Xiang Wei ZHUO <wei@zhuo.org>
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** Filename......: NetPBM.php
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** Last changed..: 30 Aug 2003
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** Notes.........: Orginal is from PEAR
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**/
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// +----------------------------------------------------------------------+
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// | PHP Version 4 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2002 The PHP Group |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 2.02 of the PHP license, |
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// | that is bundled with this package in the file LICENSE, and is |
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// | available at through the world-wide-web at |
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// | http://www.php.net/license/2_02.txt. |
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// | If you did not receive a copy of the PHP license and are unable to |
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// | obtain it through the world-wide-web, please send a note to |
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// | license@php.net so we can mail you a copy immediately. |
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// +----------------------------------------------------------------------+
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// | Authors: Peter Bowyer <peter@mapledesign.co.uk> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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//
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// Image Transformation interface using command line NetPBM
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require_once "Transform.php";
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Class Image_Transform_Driver_NetPBM extends Image_Transform
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{
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/**
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* associative array commands to be executed
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* @var array
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*/
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var $command = array();
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/**
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* Class Constructor
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*/
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function Image_Transform_Driver_NetPBM()
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{
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$this->uid = md5($_SERVER['REMOTE_ADDR']);
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return true;
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} // End function Image_NetPBM
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/**
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* Load image
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*
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* @param string filename
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*
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* @return mixed none or a PEAR error object on error
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* @see PEAR::isError()
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*/
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function load($image)
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{
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//echo $image;
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$this->image = $image;
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$this->_get_image_details($image);
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} // End load
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/**
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* Resizes the image
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*
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* @return none
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* @see PEAR::isError()
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*/
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function _resize($new_x, $new_y)
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{
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// there's no technical reason why resize can't be called multiple
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// times...it's just silly to do so
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$this->command[] = IMAGE_TRANSFORM_LIB_PATH .
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"pnmscale -width $new_x -height $new_y";
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$this->_set_new_x($new_x);
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$this->_set_new_y($new_y);
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} // End resize
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/**
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* Crop the image
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*
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* @param int $crop_x left column of the image
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* @param int $crop_y top row of the image
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* @param int $crop_width new cropped image width
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* @param int $crop_height new cropped image height
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*/
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function crop($crop_x, $crop_y, $crop_width, $crop_height)
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{
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$this->command[] = IMAGE_TRANSFORM_LIB_PATH .
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"pnmcut -left $crop_x -top $crop_y -width $crop_width -height $crop_height";
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}
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/**
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* Rotates the image
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*
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* @param int $angle The angle to rotate the image through
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*/
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function rotate($angle)
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{
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$angle = -1*floatval($angle);
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if($angle > 90)
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{
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$this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmrotate -noantialias 90";
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$this->rotate(-1*($angle-90));
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}
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else if ($angle < -90)
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{
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$this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmrotate -noantialias -90";
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$this->rotate(-1*($angle+90));
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}
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else
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$this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmrotate -noantialias $angle";
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} // End rotate
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/**
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* Flip the image horizontally or vertically
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*
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* @param boolean $horizontal true if horizontal flip, vertical otherwise
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*/
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function flip($horizontal)
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{
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if($horizontal)
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$this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmflip -lr";
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else
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$this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmflip -tb";
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}
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/**
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* Adjust the image gamma
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*
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* @param float $outputgamma
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*
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* @return none
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*/
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function gamma($outputgamma = 1.0) {
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$this->command[13] = IMAGE_TRANSFORM_LIB_PATH . "pnmgamma $outputgamma";
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}
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/**
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* adds text to an image
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*
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* @param array options Array contains options
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* array(
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* 'text' // The string to draw
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* 'x' // Horizontal position
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* 'y' // Vertical Position
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* 'Color' // Font color
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* 'font' // Font to be used
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* 'size' // Size of the fonts in pixel
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* 'resize_first' // Tell if the image has to be resized
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* // before drawing the text
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* )
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*
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* @return none
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*/
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function addText($params)
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{
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$default_params = array('text' => 'This is Text',
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'x' => 10,
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'y' => 20,
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'color' => 'red',
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'font' => 'Arial.ttf',
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'size' => '12',
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'angle' => 0,
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'resize_first' => false);
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// we ignore 'resize_first' since the more logical approach would be
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// for the user to just call $this->_resize() _first_ ;)
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extract(array_merge($default_params, $params));
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$this->command[] = "ppmlabel -angle $angle -colour $color -size "
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."$size -x $x -y ".$y+$size." -text \"$text\"";
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} // End addText
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function _postProcess($type, $quality, $save_type)
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{
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$type = is_null($type) || $type==''? $this->type : $type;
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$save_type = is_null($save_type) || $save_type==''? $this->type : $save_type;
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//echo "TYPE:". $this->type;
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array_unshift($this->command, IMAGE_TRANSFORM_LIB_PATH
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. $type.'topnm '. $this->image);
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$arg = '';
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switch(strtolower($save_type)){
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case 'gif':
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$this->command[] = IMAGE_TRANSFORM_LIB_PATH . "ppmquant 256";
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$this->command[] = IMAGE_TRANSFORM_LIB_PATH . "ppmto$save_type";
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break;
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case 'jpg':
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case 'jpeg':
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$arg = "--quality=$quality";
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$this->command[] = IMAGE_TRANSFORM_LIB_PATH . "ppmto$save_type $arg";
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break;
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default:
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$this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmto$save_type $arg";
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break;
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} // switch
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return implode('|', $this->command);
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}
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/**
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* Save the image file
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*
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* @param $filename string the name of the file to write to
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* @param string $type (jpeg,png...);
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* @param int $quality 75
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* @return none
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*/
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function save($filename, $type=null, $quality = 85)
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{
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$cmd = $this->_postProcess('', $quality, $type) . ">$filename";
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//If you are using windows, you need the following line.
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//$cmd = ereg_replace('/','\\',$cmd);
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//echo $cmd."##";
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system($cmd);
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$this->command = array();
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} // End save
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/**
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* Display image without saving and lose changes
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*
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* @param string $type (jpeg,png...);
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* @param int $quality 75
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* @return none
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*/
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function display($type = null, $quality = 75)
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{
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header('Content-type: image/' . $type);
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$cmd = $this->_postProcess($type, $quality);
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passthru($cmd);
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$this->command = array();
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}
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/**
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* Destroy image handle
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*
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* @return none
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*/
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function free()
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{
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// there is no image handle here
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return true;
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}
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} // End class ImageIM
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?>
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