104 lines
No EOL
2.9 KiB
PHP
104 lines
No EOL
2.9 KiB
PHP
<?php
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/*
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* File: SimpleImage.php
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* Author: Simon Jarvis
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* Copyright: 2006 Simon Jarvis
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* Date: 08/11/06
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* Link: http://www.white-hat-web-design.co.uk/articles/php-image-resizing.php
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details:
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* http://www.gnu.org/licenses/gpl.html
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*
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*/
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class SimpleImage {
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var $image;
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var $image_type;
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function load($filename) {
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$image_info = getimagesize($filename);
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$this->image_type = $image_info['mime'];
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if( $this->image_type == "image/jpeg" ) {
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$this->image = imagecreatefromjpeg($filename);
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} elseif( $this->image_type == "image/gif" ) {
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$this->image = imagecreatefromgif($filename);
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} elseif( $this->image_type == "image/png" ) {
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$this->image = imagecreatefrompng($filename);
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}
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}
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function save($filename, $image_type=IMAGETYPE_PNG, $compression=75, $permissions=null) {
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if( $image_type == IMAGETYPE_JPEG ) {
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imagejpeg($this->image,$filename,$compression);
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} elseif( $image_type == IMAGETYPE_GIF ) {
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imagegif($this->image,$filename);
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} elseif( $image_type == IMAGETYPE_PNG ) {
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imagepng($this->image,$filename);
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}
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if( $permissions != null) {
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chmod($filename,$permissions);
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}
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}
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function output($image_type=IMAGETYPE_JPEG) {
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if( $image_type == IMAGETYPE_JPEG ) {
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imagejpeg($this->image);
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} elseif( $image_type == IMAGETYPE_GIF ) {
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imagegif($this->image);
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} elseif( $image_type == IMAGETYPE_PNG ) {
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imagepng($this->image);
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}
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}
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function getWidth() {
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return imagesx($this->image);
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}
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function getHeight() {
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return imagesy($this->image);
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}
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function resizeToHeight($height) {
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$ratio = $height / $this->getHeight();
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$width = $this->getWidth() * $ratio;
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$this->resize($width,$height);
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}
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function resizeToWidth($width) {
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$ratio = $width / $this->getWidth();
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$height = $this->getheight() * $ratio;
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$this->resize($width,$height);
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}
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function scale($scale) {
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$width = $this->getWidth() * $scale/100;
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$height = $this->getheight() * $scale/100;
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$this->resize($width,$height);
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}
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function resize($width,$height) {
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$new_image = imagecreatetruecolor($width, $height);
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imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
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$this->image = $new_image;
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}
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}
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?>
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