mods/_standard/photos/include/classes/SimpleImage.class.php

   1 <?php
   2 /*
   3 * File: SimpleImage.php
   4 * Author: Simon Jarvis
   5 * Copyright: 2006 Simon Jarvis
   6 * Date: 08/11/06
   7 * Link: http://www.white-hat-web-design.co.uk/articles/php-image-resizing.php
   8 *
   9 * This program is free software; you can redistribute it and/or
  10 * modify it under the terms of the GNU General Public License
  11 * as published by the Free Software Foundation; either version 2
  12 * of the License, or (at your option) any later version.
  13 *
  14 * This program is distributed in the hope that it will be useful,
  15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17 * GNU General Public License for more details:
  18 * http://www.gnu.org/licenses/gpl.html
  19 *
  20 */
  21
  22 class SimpleImage {
  23
  24    var $image;
  25    var $image_type;
  26
  27    function load($filename) {
  28       $image_info = getimagesize($filename);
  29       $this->image_type = $image_info[2];
  30       if( $this->image_type == IMAGETYPE_JPEG ) {
  31          $this->image = imagecreatefromjpeg($filename);
  32       } elseif( $this->image_type == IMAGETYPE_GIF ) {
  33          $this->image = imagecreatefromgif($filename);
  34       } elseif( $this->image_type == IMAGETYPE_PNG ) {
  35          $this->image = imagecreatefrompng($filename);
  36       }
  37    }
  38    function save($filename, $image_type=IMAGETYPE_JPEG, $compression=75, $permissions=null) {
  39       if( $image_type == IMAGETYPE_JPEG ) {
  40          imagejpeg($this->image,$filename,$compression);
  41       } elseif( $image_type == IMAGETYPE_GIF ) {
  42          imagegif($this->image,$filename);
  43       } elseif( $image_type == IMAGETYPE_PNG ) {
  44          imagepng($this->image,$filename);
  45       }
  46       if( $permissions != null) {
  47          chmod($filename,$permissions);
  48       }
  49    }
  50    function output($image_type=IMAGETYPE_JPEG) {
  51       if( $image_type == IMAGETYPE_JPEG ) {
  52          imagejpeg($this->image);
  53       } elseif( $image_type == IMAGETYPE_GIF ) {
  54          imagegif($this->image);
  55       } elseif( $image_type == IMAGETYPE_PNG ) {
  56          imagepng($this->image);
  57       }
  58    }
  59    function getWidth() {
  60       return imagesx($this->image);
  61    }
  62    function getHeight() {
  63       return imagesy($this->image);
  64    }
  65    function resizeToHeight($height) {
  66       $ratio = $height / $this->getHeight();
  67       $width = $this->getWidth() * $ratio;
  68       $this->resize($width,$height);
  69    }
  70    function resizeToWidth($width) {
  71       $ratio = $width / $this->getWidth();
  72       $height = $this->getheight() * $ratio;
  73       $this->resize($width,$height);
  74    }
  75    function scale($scale) {
  76       $width = $this->getWidth() * $scale/100;
  77       $height = $this->getheight() * $scale/100;
  78       $this->resize($width,$height);
  79    }
  80    function resize($width,$height) {
  81       $new_image = imagecreatetruecolor($width, $height);
  82       imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
  83       $this->image = $new_image;
  84    }
  85 }
  86 ?>