import java.awt.*;
import java.applet.*;
import javax.swing.*;

/**************************************************************
* En applikation som visar upp några grundläggande javatekniker 
* för grafikhantering.  
*   
* @author Peter Mozelius
* @version 1.01
* Rapportera hittade fel till: 
*<adress>mozelius@dsv.su.se</adress>
***************************************************************/
public class Lektion3c extends JFrame{
  private JPanel panel;
  private TextYta ty; 
  private Toolkit tk;
  private Image bild;  

  public Lektion3c(){
    setBackground(new Color(204, 0, 0));
    this.setSize(350, 200);
    Toolkit toolkit = Toolkit.getDefaultToolkit();
    bild = toolkit.getImage("bild.jpg");
    ty = new TextYta(bild); 
    add(ty,"Center");
    setVisible(true); 
    setDefaultCloseOperation(EXIT_ON_CLOSE); 
  }

  public static void main(String[] args) {
    new Lektion3c();
  }
  
}//Lektion3c


/**************************************************************
* Specialisering av en JPanel där methoden paintComponent()
* ritar ut strängen text centrerad över den bild som ges som
* argument till klassens konstruktor 
*   
* @author Peter Mozelius
* @version 1.01
* Rapportera hittade fel till: 
*<adress>mozelius@dsv.su.se</adress>
***************************************************************/
class TextYta extends JPanel{
   private Image bild;
   private String text;
   private Font minFont;
   private FontMetrics fm;
   private Dimension dim;
   private int x, y;
   
    public TextYta(Image bild){
      super(); 
      this.setSize(350, 200);
      this.bild = bild; 
      minFont = new Font("TimesRoman", java.awt.Font.BOLD, 52);
      text = new String("Hejsan!!");
    }    

    public void paintComponent(Graphics g){
      super.paintComponent(g);
      g.drawImage(bild, 0, 0, this);     
      g.setColor(new Color(70, 70, 70));
      g.setFont(minFont);
      fm = g.getFontMetrics(minFont);
      dim = getSize();
      int sWidth = fm.stringWidth(text);
      x = (dim.width/2) - (sWidth/2);
      y = 145; 
      g.drawString(text,x, y);                      
    }//paintComponent

}//TextYta