<?php

class SimpleImage {

   function __construct($filename) {
      $this->image       = new Imagick($filename);
      $this->filename    = $filename;
      $this->compression = 85;
   }

   function setCompression($compression) {
      if(!is_numeric($compression) || $compression < 0 || $compression > 100) {
         throw new Exception("Invalid compression value!");
      }

      $this->compression = $compression;
   }

   function save($newFileName) {
      $this->image->setCompression($this->compression);

      if(is_string($newFileName)) {
         $this->image->writeImage($newFileName);
      }
      else {
         $this->image->writeImage($this->filename);
      }

   }

   function output() {
      echo file_get_contents($this->filename);
   }

   function getWidth() {
      return $this->image->getImageWidth();
   }

   function getHeight() {
      return $this->image->getImageHeight();
   }

   function resizeToHeight($height) {
      $ratio = $height / $this->getHeight();
      $width = $this->getWidth() * $ratio;
      $this->resize($width, $height);
   }

   function resizeToWidth($width) {
      $ratio = $width / $this->getWidth();
      $height = $this->getheight() * $ratio;
      $this->resize($width, $height);
   }

   function scale($scale) {
      $width = $this->getWidth() * $scale / 100;
      $height = $this->getheight() * $scale / 100;
      $this->resize($width,$height);
   }

   function resize($width, $height) {
      return $this->image->scaleImage($width, $height);
   }

   function rotate($angle = 90) {
      $this->image->rotateImage(new ImagickPixel(), 90);
   }

   function crop($width, $height, $x, $y) {
      $this->image->cropImage($width, $height, $x, $y);

   }
}

?>