[Sommaire] [Imprimer]

   1  <?php
   2  
   3  /***********************************************************************
   4  ** Title.........:  ImageMagick Driver
   5  ** Version.......:  1.0
   6  ** Author........:  Xiang Wei ZHUO <wei@zhuo.org>
   7  ** Filename......:  IM.php
   8  ** Last changed..:  30 Aug 2003 
   9  ** Notes.........:  Orginal is from PEAR
  10  **/
  11  
  12  // +----------------------------------------------------------------------+
  13  // | PHP Version 4                                                        |
  14  // +----------------------------------------------------------------------+
  15  // | Copyright (c) 1997-2002 The PHP Group                                |
  16  // +----------------------------------------------------------------------+
  17  // | This source file is subject to version 2.02 of the PHP license,      |
  18  // | that is bundled with this package in the file LICENSE, and is        |
  19  // | available at through the world-wide-web at                           |
  20  // | http://www.php.net/license/2_02.txt.                                 |
  21  // | If you did not receive a copy of the PHP license and are unable to   |
  22  // | obtain it through the world-wide-web, please send a note to          |
  23  // | license@php.net so we can mail you a copy immediately.               |
  24  // +----------------------------------------------------------------------+
  25  // | Authors: Peter Bowyer <peter@mapledesign.co.uk>                      |
  26  // +----------------------------------------------------------------------+
  27  //
  28  // $Id: IM.php 14987 2004-04-21 20:43:23Z mipmip $
  29  //
  30  // Image Transformation interface using command line ImageMagick
  31  //
  32  
  33  require_once  "Transform.php";
  34  
  35  Class Image_Transform_Driver_IM extends Image_Transform
  36  {
  37      /**
  38       * associative array commands to be executed
  39       * @var array
  40       */
  41      var $command = array();
  42  
  43      /**
  44       *
  45       *
  46       */
  47      function Image_Transform_Driver_IM()
  48      {
  49          return true;
  50      } // End Image_IM
  51  
  52      /**
  53       * Load image
  54       *
  55       * @param string filename
  56       *
  57       * @return mixed none or a PEAR error object on error
  58       * @see PEAR::isError()
  59       */
  60      function load($image)
  61      {
  62  
  63          $this->uid = md5($_SERVER['REMOTE_ADDR']);
  64          /*if (!file_exists($image)) {
  65              return PEAR::raiseError('The image file ' . $image . ' does\'t exist', true);
  66          }*/
  67          $this->image = $image;
  68          $this->_get_image_details($image);
  69      } // End load
  70  
  71      /**
  72       * Resize Action
  73       *
  74       * @param int   new_x   new width
  75       * @param int   new_y   new height
  76       *
  77       * @return none
  78       * @see PEAR::isError()
  79       */
  80      function _resize($new_x, $new_y)
  81      {
  82          /*if (isset($this->command['resize'])) {
  83              return PEAR::raiseError("You cannot scale or resize an image more than once without calling save or display", true);
  84          }*/
  85          $this->command['resize'] = "-geometry $new_x}x$new_y}!";
  86  
  87          $this->new_x = $new_x;
  88          $this->new_y = $new_y;
  89      } // End resize
  90  
  91      /**
  92       * Crop the image
  93       *
  94       * @param int $crop_x left column of the image
  95       * @param int $crop_y top row of the image
  96       * @param int $crop_width new cropped image width
  97       * @param int $crop_height new cropped image height
  98       */
  99      function crop($crop_x, $crop_y, $crop_width, $crop_height) 
 100      {
 101          $this->command['crop'] = "-crop {$crop_width}x{$crop_height}+{$crop_x}+{$crop_y}";
 102      }
 103  
 104      /**
 105       * Flip the image horizontally or vertically
 106       *
 107       * @param boolean $horizontal true if horizontal flip, vertical otherwise
 108       */
 109      function flip($horizontal) 
 110      {
 111          if($horizontal)
 112              $this->command['flop'] = "-flop";
 113          else
 114              $this->command['flip'] = "-flip";
 115      }
 116      /**
 117       * rotate
 118       *
 119       * @param   int     angle   rotation angle
 120       * @param   array   options no option allowed
 121       *
 122       */
 123      function rotate($angle, $options=null)
 124      {
 125          if ('-' == $angle{0}) {
 126              $angle = 360 - substr($angle, 1);
 127          }
 128           $this->command['rotate'] = "-rotate $angle";
 129      } // End rotate
 130  
 131      /**
 132       * addText
 133       *
 134       * @param   array   options     Array contains options
 135       *                              array(
 136       *                                  'text'  The string to draw
 137       *                                  'x'     Horizontal position
 138       *                                  'y'     Vertical Position
 139       *                                  'Color' Font color
 140       *                                  'font'  Font to be used
 141       *                                  'size'  Size of the fonts in pixel
 142       *                                  'resize_first'  Tell if the image has to be resized
 143       *                                                  before drawing the text
 144       *                              )
 145       *
 146       * @return none
 147       * @see PEAR::isError()
 148       */
 149      function addText($params)
 150      {
 151          $default_params = array(
 152                                  'text' => 'This is Text',
 153                                  'x' => 10,
 154                                  'y' => 20,
 155                                  'color' => 'red',
 156                                  'font' => 'Arial.ttf',
 157                                  'resize_first' => false // Carry out the scaling of the image before annotation?
 158                                  );
 159           $params = array_merge($default_params, $params);
 160           extract($params);
 161           if (true === $resize_first) {
 162               // Set the key so that this will be the last item in the array
 163              $key = 'ztext';
 164           } else {
 165              $key = 'text';
 166           }
 167           $this->command[$key] = "-font $font -fill $color -draw 'text $x,$y \"$text\"'";
 168           // Producing error: gs: not found gs: not found convert: Postscript delegate failed [No such file or directory].
 169      } // End addText
 170  
 171      /**
 172       * Adjust the image gamma
 173       *
 174       * @param float $outputgamma
 175       *
 176       * @return none
 177       */
 178      function gamma($outputgamma=1.0) {
 179          $this->command['gamma'] = "-gamma $outputgamma";
 180      }
 181  
 182      /**
 183       * Save the image file
 184       *
 185       * @param $filename string  the name of the file to write to
 186       * @param $quality  quality image dpi, default=75
 187       * @param $type     string  (JPG,PNG...)
 188       *
 189       * @return none
 190       */
 191      function save($filename, $type='', $quality = 85)
 192      {
 193          $type == '' ? $this->type : $type;
 194          $cmd = '' . IMAGE_TRANSFORM_LIB_PATH . 'convert" ' . implode(' ', $this->command) . " -quality $quality "  . ($this->image) . ' ' . ($filename) . ' 2>&1';
 195          
 196          //echo $cmd;
 197          exec($cmd);
 198      } // End save
 199  
 200      /**
 201       * Display image without saving and lose changes
 202       *
 203       * @param string type (JPG,PNG...);
 204       * @param int quality 75
 205       *
 206       * @return none
 207       */
 208      function display($type = '', $quality = 75)
 209      {
 210          if ($type == '') {
 211              header('Content-type: image/' . $this->type);
 212              passthru(IMAGE_TRANSFORM_LIB_PATH . 'convert ' . implode(' ', $this->command) . " -quality $quality "  . escapeshellarg($this->image) . ' ' . strtoupper($this->type) . ":-");
 213          } else {
 214              header('Content-type: image/' . $type);
 215              passthru(IMAGE_TRANSFORM_LIB_PATH . 'convert ' . implode(' ', $this->command) . " -quality $quality "  . escapeshellarg($this->image) . ' ' . strtoupper($type) . ":-");
 216          }
 217      }
 218  
 219  
 220      /**
 221       * Destroy image handle
 222       *
 223       * @return none
 224       */
 225      function free()
 226      {
 227          return true;
 228      }
 229  
 230  } // End class ImageIM
 231  ?>