/*
 * Créé le 15 sept. 2004
 *
 */
package gui.principal;

import java.awt.Dimension;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.Window;
import java.net.URL;

import principal.Commun;

/**
* Affiche une image au démarrage, pour faire patienter l'utilisateur avant que
* la fenętre principale ne s'ouvre. Adaptée d'un code trouvé sur le net dont voici
* la présentation :
* <p>
* Present a simple graphic to the user upon launch of the application, to 
* provide a faster initial response than is possible with the main window.
* <P>
* Adapted from an 
* <a href=http://developer.java.sun.com/developer/qow/archive/24/index.html>item</a> 
* on Sun's Java Developer Connection.
* <P>
* This splash screen appears within about 2.5 seconds on a development 
* machine. The main screen takes about 6.0 seconds to load, so use of a splash 
* screen cuts down the initial display delay by about 55 percent. 
*
* @author 	<a href="http://www.javapractices.com/">javapractices.com</a>
* @author	Vincent Labatut
* @version	1
*/
public final class PanelSplash extends Frame
{	/**
	* nom du fichier contenant l'image ŕ afficher
	*/
    private final String fImageId;
    /**
	* ...
	*/
    private MediaTracker fMediaTracker;
    /**
	* image ŕ afficher
	*/
    private Image fImage;

	//----------------------------------------	
	//	Constructeur
	//----------------------------------------
    /**
	* aImageId must have content, and is used by  
	* <code>Class.getResource</code> to retrieve the splash screen image.
	*/
    public PanelSplash()
    {
        /* Implementation Note
         * Args.checkForContent is not called here, in an attempt to minimize 
         * class loading.
         */
	
		String aImageId = Commun.PATH_SPLASH;
		
		if ( aImageId == null || aImageId.trim().length() == 0 )
		{	throw new IllegalArgumentException(Commun.TITRE_ERREUR);
		}
		fImageId = aImageId;
    }
   
    /**
     * Show the splash screen to the end user.
     *
     * <P>Once this method returns, the splash screen is realized, which means 
     * that almost all work on the splash screen should proceed through the event 
     * dispatch thread. In particular, any call to <code>dispose</code> for the 
     * splash screen must be performed in the event dispatch thread.
     */
    public void splash()
    {	initImageAndTracker();
    	setSize(fImage.getWidth(null), fImage.getHeight(null));
    	center();
	
    	URL url = getClass().getResource(Commun.PATH_ICONE_RAGE);
    	setIconImage((new javax.swing.ImageIcon(url)).getImage());
//System.out.println("splash:"+url);
    
    
    	fMediaTracker.addImage(fImage, 0);
    	try
    	{
    	    fMediaTracker.waitForID(0);
    	}
    	catch(InterruptedException ie)
    	{
    	    ie.printStackTrace();
    	}

    	SplashWindow splashWindow = new SplashWindow(this,fImage);
    }
    /**
     * récupčre l'image
     *
     */
    private void initImageAndTracker()
    {
        fMediaTracker = new MediaTracker(this);
        URL imageURL = PanelSplash.class.getResource(fImageId);
        fImage = Toolkit.getDefaultToolkit().getImage(imageURL);
    }

    /**
     * Centers the frame on the screen.
     */
    private void center()
    {
        Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
        Rectangle frame = getBounds();
        setLocation((screen.width - frame.width)/2, (screen.height - frame.height)/2);
    }
 
//	+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++	
//	+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++	
//	+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++	
//	+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++	
//	+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++	
//	+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++	
//	+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++	

	/**	
	* Fenętre qui va contenir l'image
	*
	 */
	private class SplashWindow extends Window
	{	/**	
		* l'image ŕ afficher
		*
		 */
		private Image fImage;

		SplashWindow(Frame aParent, Image aImage)
		{	super(aParent);
			fImage = aImage;
		   	setSize(fImage.getWidth(null), fImage.getHeight(null));
		   	Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
		   	Rectangle window = getBounds();
		   	setLocation((screen.width - window.width) / 2, (screen.height - window.height) / 2);
		   	setVisible(true);
		}
		/*
		 * 
		 */
		public void paint(Graphics graphics)
		{	if (fImage != null)
			{	// on dessine l'image
		    	graphics.drawImage(fImage,0,0,this);
				// on incruste du texte (version, etc)
		    	Font f = new Font("Courrier",Font.PLAIN, 10);
		    	graphics.setFont(f);
		    	graphics.drawString(Commun.STRING_COEUR+":v"+Commun.VERSION+" / "+Commun.STRING_GUI+":v"+syl.principal.Commun.VERSION,10,570);
		  	}
		}
	}
}