colormenu.java

Colormenu彩色菜单Java小程序

import java.applet.Applet;
import java.awt.*;
import java.awt.image.*;
import java.util.*;
import java.net.URL;

// Navigation applet by Stig Christensen, May 2000 (email: stigc2get2net.dk)
// Free for use in any way.


public class colormenu extends Applet implements Runnable{

Cursor cursor;
Thread runner;
Image offimage;
Graphics off;
String text [];
int antal=0;
Font font ;
URL links [];
int f1,f2,f3,f4,f5,f6,b1,b2,b3,b4,b5,b6,b7,b8,b9; // Colors
String tfarve, target="_self";
boolean firsttime = true;
int Width, Height;
int over=-1;
int bf=0;
int border=0;


public void update (Graphics g)

	{
	paint(g);
	}

public void init () {
	
	     

	tfarve=getParameter("selection_color");
	b7= Integer.parseInt(tfarve.substring(0,3));	
	b8= Integer.parseInt(tfarve.substring(4,7));
	b9= Integer.parseInt(tfarve.substring(8,11));

	tfarve=getParameter("text_color");
	f4= Integer.parseInt(tfarve.substring(0,3));	
	f5= Integer.parseInt(tfarve.substring(4,7));
	f6= Integer.parseInt(tfarve.substring(8,11));

	tfarve=getParameter("background_color");
	f1= Integer.parseInt(tfarve.substring(0,3));	
	f2= Integer.parseInt(tfarve.substring(4,7));
	f3= Integer.parseInt(tfarve.substring(8,11));

	tfarve=getParameter("border_color");
	b1= Integer.parseInt(tfarve.substring(0,1));	
	b2= Integer.parseInt(tfarve.substring(2,3));
	b3= Integer.parseInt(tfarve.substring(4,5));

	tfarve=getParameter("fade_color");
	b4= Integer.parseInt(tfarve.substring(0,1));	
	b5= Integer.parseInt(tfarve.substring(2,3));
	b6= Integer.parseInt(tfarve.substring(4,5));

	tfarve=getParameter("fontface");
	font = new Font(tfarve,Font.PLAIN,Integer.parseInt(getParameter("fontsize")));
	if (getParameter("target")!=null) target=getParameter("target");



	for (int i=1 ; getParameter ("text"+i) != null ; i++) antal++;
	text = new String [antal];
	links = new URL [antal];


	for (int i=0; i<antal; i++)
	     	{
		try {
		links[i] = new URL (getCodeBase(), getParameter ("link"+(i+1)));
			 } catch (Exception e) {}				
		text[i] = getParameter ("text"+(i+1));
	     	}
	
	Width = size().width;	
	Height = size().height;

	offimage = createImage(Width,Height);
	off = offimage.getGraphics();
	off.setFont(font);
	off.setColor(new Color(f1,f2,f3));
	off.fillRect(0,0,Width,Height);
	}


public void paint (Graphics g)	{

	g.drawImage(offimage,0,0,this);	

	}

 public void start() {
		  getFrame(this).setCursor(Frame.HAND_CURSOR) ;
						
    if (runner == null); {
      runner = new Thread(this);
      runner.start();
    }
  }

  public void stop() {
    if (runner != null) {
      runner.stop();
      runner = null;
    }
  }

  public void run() {

	while (true)
	{

	
	for (int i=0; i<antal; i++)
	{
	//if (over==i) bf=200; else bf=0;

	if (firsttime)
		{
		// Draws the borders
		off.setColor(new Color(190*b1,190*b2,190*b3));
		off.drawRect(0,0+i*30,Width,30);
		off.setColor(new Color(110*b1,110*b2,110*b3));
		off.drawRect(1,1+i*30,Width-2,28);
		off.setColor(new Color(70*b1,70*b2,70*b3));
		off.drawRect(2,2+i*30,Width-4,26);
		
		// Draws the background
		for (int j=0; j<Width-4; j+=2)
			{
			off.setColor(new Color((int)(b4*j/1.2),(int)(b5*j/1.2),(int)(b6*j/1.2)));
			off.drawLine(3+j,4+i*30,3+j,3+i*30+23);
			}

		// Draws the links
		off.setColor(new Color(f4,f5,f6));
		off.drawString(text[i],8,21+i*30);

		}
	
	off.setColor(new Color(f1,f2,f3)); // Clears the white selection if any
	off.drawRect(3,3+i*30,Width-6,24);	


	if (i==over)
		{
		off.setColor(new Color(b7,b8,b9)); // Draws the white selection
		off.drawRect(3,3+i*30,Width-6,24);
		}
	
	}



	firsttime=false;

			
	repaint();
	try {Thread.sleep(50);}
	catch (InterruptedException e) {showStatus("Error " + e);}
    	}

	}

       public Frame getFrame(Component c) {
          while( c != null && !(c instanceof java.awt.Frame) )
                c = c.getParent();
          return (Frame) c;
        }


	// ********************* MOUSEHANDLING
	// ********************* MOUSEHANDLING

	public boolean mouseMove(Event e, int x, int y) // Mouse moved, find new place
	{						// for the white selection
	for (int i=0; i<antal; i++)
	if (y>30*i && y<30+30*i ) { over =i; return true; }
	return true;
	}


	public boolean mouseDown(Event e, int x, int y) // Mouse pressed find the right link
	{
	for (int i=0; i<antal; i++)
	if (y>30*i && y<30+30*i ) { getAppletContext().showDocument(links[i],target);	 }
	return true;
  	}   	

	public boolean mouseExit(Event e, int x, int y) // Mouse leaves applet
	{
	over=-1; return true;
	}



	
	}