<?php
class akjScreenshot
{
	private $image = NULL;

	function __construct($url=NULL)
	{
		if($url!= NULL)
		{
			$this->takeShot($url);
		}
	}	

	private function takeShot($url)
	{
		try
		{
			$browser = new COM("InternetExplorer.Application");
		}
		catch(Exception $e)
		{
			$browser=NULL;
		}  		
		
		if($browser != NULL)
		{
			$handle = $browser->HWND;
			$browser->Visible = true;
			$browser->Navigate($url);
			$browser->Fullscreen = true;
			$browser->resizable = true;		

			while ($browser->Busy)
			{
				com_message_pump(4000);
			}	
			
			$im = imagegrabwindow($handle, 0);
			$height = $browser->Height - 23;
			$width = $browser->Width - 17;

			$dest = imagecreatetruecolor($width, $height);
			imagecopy($dest, $im, 0, 0, 0, 0, $width, $height);
			$this->image = $dest;
			$browser->Quit();		
			
			return true;
		}
		else
		{
			return false;
		}
	}

	private function getWidth()
	{
      return imagesx($this->image);
	}
   
	private function getHeight()
	{
      return imagesy($this->image);
	}	

	private function resize($width,$height)
	{
		$new_image = imagecreatetruecolor($width, $height);
		imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
		$this->image = $new_image;   
	} 

	function takeScreenshot($url=NULL)
	{
		if($url == NULL)
		{
			return false;
		}
		return $this->takeShot($url);
	}

	function toHeight($height)
	{
		$ratio = $height / $this->getHeight();
		$width = $this->getWidth() * $ratio;
		$this->resize($width,$height);		
	}
	
	function toWidth($width)
	{
		$ratio = $width / $this->getWidth();
		$height = $this->getheight() * $ratio;
		$this->resize($width,$height);		
	}

	function save($filename=NULL, $imageType="jpeg", $compression=100)
	{
		if($filename==NULL || $this->image==NULL)
		{
			return false;
		}
		$imageType = strtolower($imageType);
		if($imageType == "jpg" || $imageType =="jpeg" )
		{
			imagejpeg($this->image,$filename,$compression);
		}
		elseif($imageType == "gif")
		{
			imagegif($this->image,$filename);         
		}
		elseif($imageType == "png")
		{
			imagepng($this->image,$filename);
		}   
		return true;
	}

}

?>