need a transparent background Text Field

I tried making a translucent colour using new Color(...)

but the alpha value was ignored by Java.

There are 22 errors in total, including:

method repaint() doesnt exist

getImage() doesnt exist in Image

drawImage() doesnt exist Image

etc

robinjama at 2007-7-15 4:53:16 >

here's the code: (works fine as an Applet but not as a JApplet)

import java.io.*;

import java.awt.*;

import java.applet.*;

import java.net.*;

public class LegerDomain extends Applet implements Runnable {

// VARIABLE DECLARATIONS ************************************************************************************************************************

int frame;// The current frame number

Image JimmywareLogo;// The JW logo (800x600)

Image Loading;// The small loading screen

Image backbuffer;// The back buffer in the flipping chain (800x600)

Image login; // The login screen (800x600)

Graphics backbufferg;// The graphics object used to draw on the back buffer

URL base;

MediaTracker mt; // The mediatracker used to check that images are loaded

boolean running=true;// Indicates whether or not the current frame should be rendered

Thread graphicsThread;// The seperate thread that the grpahic processing is executed on

String IP;// The server's IP Address, passed from the webpage

String MOTD; // The server's message of the day, passed from the webpage

TextField UserNameField; // The space where the user enters their username

// ************************ The following variables are involved in the connection to the network.****

Socket ldSocket = null; // The socket used to connect

PrintWriter out = null; // The output stream to be sent to the server

BufferedReader in = null;// The input stream from the server

// END OF VARIABLE DECLARATIONS *****************************************************************************************************************

public void init() { // Initializes the applet ready for use

IP=getParameter("IP");// Get the IP address of the server

MOTD=getParameter("MOTD"); // Get the server's message of the day

mt = new MediaTracker(this);// Prepare the mediatracker to receive images

try {

base = getDocumentBase();// Get the base of the applet for use while loading images

} catch (Exception e) {}

JimmywareLogo = getImage(base,"jimmywarelogo.jpg"); // Load the JW logo

Loading = getImage(base,"loading.jpg"); // Load the loading screen

mt.addImage(JimmywareLogo,1);// Add the JW logo to the loading queue

mt.addImage(Loading,1);// Add the loading screen to the loading queue

try {

mt.waitForAll();// Wait until all the images have loaded before proceeding

} catch (InterruptedException e) {}

backbuffer = createImage(800, 600);

backbufferg = backbuffer.getGraphics(); // Prepare the back buffer for drawing onto

graphicsThread= new Thread(this);

graphicsThread.start();// Create the grpahics thread and start it running

} // END INIT ***********************************************************************************************************************************

public void destroy() { // Kills anything that may cause laag after the applet closes

running = false;// will cause thread to stop looping

graphicsThread = null; // destroy it.

} // END DESTROY ********************************************************************************************************************************

public void update( Graphics g ) { // Replaces the old update function to prevent flicker

g.drawImage( backbuffer, 0, 0, this ); // Draw the back buffer to the screen

} // END UPDATE *********************************************************************************************************************************

public void paint( Graphics g ) { // Called whenever the applet is invalidated or the graphics thread ticks

update( g ); // Just pass the burden onto the update function

} // END PAINT **********************************************************************************************************************************

public void run() { // Called whenever the graphics thread ticks

while (running) { // Make sure the applet isn't exiting

FontMetrics fm= backbuffer.getGraphics().getFontMetrics(backbuffer.getGraphics().getFont());

java.awt.geom.Rectangle2D rect = fm.getStringBounds(MOTD, backbuffer.getGraphics());

int MOTDHeight = (int)(rect.getHeight());

int MOTDWidth = (int)(rect.getWidth()); // Find the position of the MOTD, so It's centered

backbufferg.setColor(Color.black);

backbufferg.fillRect(0,0,800,600); // Clear the screen

if(frame<=25) {

backbufferg.drawImage(JimmywareLogo,0,0,this);

backbufferg.setColor(new Color(0,0,0,255-(frame*10)));

backbufferg.fillRect(0,0,800,600);

} else if(frame<=100) {

backbufferg.drawImage(JimmywareLogo,0,0,this);

} else if(frame<=125) {

backbufferg.drawImage(JimmywareLogo,0,0,this);

backbufferg.setColor(new Color(0,0,0,(frame-100)*10));

backbufferg.fillRect(0,0,800,600);

} else if(frame<=150) {

backbufferg.drawImage(Loading,200,100,this);

backbufferg.setColor(Color.gray);

backbufferg.drawRect(200,375,400,20);

backbufferg.drawString("Loading graphics...",200,365);

backbufferg.setColor( Color.white );

backbufferg.drawString(MOTD, 400-(MOTDWidth/2), 10 );

backbufferg.setColor(new Color(0,0,0,255-((frame-125)*10)));

backbufferg.fillRect(0,0,800,600);

} else if(frame<=151){

backbufferg.drawString("Connecting to server...",200,365);

backbufferg.drawImage(Loading,200,100,this);

backbufferg.setColor(Color.gray);

//backbufferg.drawRect(200,375,400,20);

backbufferg.setColor(Color.gray);

//backbufferg.fillRect(202,377,(int)width,17);

backbufferg.setColor( Color.white );

backbufferg.drawString(MOTD, 400-(MOTDWidth/2), 10 );

login = getImage(base,"login.jpg");

mt.addImage(login,1);

try {

mt.waitForAll();

} catch (InterruptedException e) {}

repaint();

ConnectToServer();

} else {

UserNameField = new TextField("",100);

UserNameField.setBounds(316,286,286,32);

if(frame==152) { add(UserNameField); }

backbufferg.drawImage(login,0,0,this);

} // end if

repaint();

try {

graphicsThread.sleep(30);

} catch (InterruptedException e) {

System.out.println(e);

} // end catch

frame++; // Go to the next frame

} // end while

} // end run

public void ConnectToServer() {

try {

ldSocket = new Socket(IP, 4444);

out = new PrintWriter(ldSocket.getOutputStream(), true);

in = new BufferedReader(new InputStreamReader(ldSocket.getInputStream()));

} catch (UnknownHostException e) {

backbufferg.setColor(Color.white);

backbufferg.drawString("Sorry, the connection to the server " + IP + " on port 4444 failed. Please try again later.",10,10);

repaint();

running=false;

} catch (IOException e) {

backbufferg.setColor(Color.white);

backbufferg.drawString("Sorry, the connection to the server " + IP + " on port 4444 failed. Please try again later.",10,10);

repaint();

running=false;

}

BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));

String fromServer;

String fromUser;

} // end ConnectToServer

} // end class LegerDomain

P.S. I will break the code up into multiple classes to make it easier to read, as soon as I get it working properly :P

P.P.S. The reason I am forced to use high level components in an applet is because:

1. The user has to log on and I don't want to have to make my own text box control

2. It has to be an applet so I can put it into my webpage

P.P.P.S. Just incase I haven't explained well enough: I'm making an mmorpg and thats why it has to connect to the server.

robinjama at 2007-7-15 4:53:16 >

hi!

i have just changed two things. changed Applet to JApplet, and changed TextField to JTextField, i have got no error while it was running. so do you mind to provide more details about what errors are you getting. and how they are reproducable.

my changed code:->

import java.awt.Color;

import java.awt.FontMetrics;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.MediaTracker;

import java.awt.TextField;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.Socket;

import java.net.URL;

import java.net.UnknownHostException;

import javax.swing.JApplet;

import javax.swing.JTextField;

public class LegerDomain extends JApplet implements Runnable {

// VARIABLE DECLARATIONS ************************************************************************************************************************

int frame;// The current frame number

Image JimmywareLogo;// The JW logo (800x600)

Image Loading;// The small loading screen

Image backbuffer;// The back buffer in the flipping chain (800x600)

Image login; // The login screen (800x600)

Graphics backbufferg;// The graphics object used to draw on the back buffer

URL base;

MediaTracker mt; // The mediatracker used to check that images are loaded

boolean running=true;// Indicates whether or not the current frame should be rendered

Thread graphicsThread;// The seperate thread that the grpahic processing is executed on

String IP;// The server's IP Address, passed from the webpage

String MOTD; // The server's message of the day, passed from the webpage

JTextField UserNameField; // The space where the user enters their username

// ************************ The following variables are involved in the connection to the network.****

Socket ldSocket = null; // The socket used to connect

PrintWriter out = null; // The output stream to be sent to the server

BufferedReader in = null;// The input stream from the server

// END OF VARIABLE DECLARATIONS *****************************************************************************************************************

@Override

public void init() { // Initializes the applet ready for use

IP="192.168.0.1";//getParameter("IP");// Get the IP address of the server

MOTD="";//getParameter("MOTD"); // Get the server's message of the day

mt = new MediaTracker(this);// Prepare the mediatracker to receive images

try {

base = getDocumentBase();// Get the base of the applet for use while loading images

} catch (Exception e) {}

JimmywareLogo = getImage(base,"jimmywarelogo.jpg"); // Load the JW logo

Loading = getImage(base,"loading.jpg"); // Load the loading screen

mt.addImage(JimmywareLogo,1);// Add the JW logo to the loading queue

mt.addImage(Loading,1);// Add the loading screen to the loading queue

try {

mt.waitForAll();// Wait until all the images have loaded before proceeding

} catch (InterruptedException e) {}

backbuffer = createImage(800, 600);

backbufferg = backbuffer.getGraphics(); // Prepare the back buffer for drawing onto

graphicsThread= new Thread(this);

graphicsThread.start();// Create the grpahics thread and start it running

} // END INIT ***********************************************************************************************************************************

@Override

public void destroy() { // Kills anything that may cause laag after the applet closes

running = false;// will cause thread to stop looping

graphicsThread = null; // destroy it.

} // END DESTROY ********************************************************************************************************************************

@Override

public void update( Graphics g ) { // Replaces the old update function to prevent flicker

g.drawImage( backbuffer, 0, 0, this ); // Draw the back buffer to the screen

} // END UPDATE *********************************************************************************************************************************

@Override

public void paint( Graphics g ) { // Called whenever the applet is invalidated or the graphics thread ticks

update( g ); // Just pass the burden onto the update function

} // END PAINT **********************************************************************************************************************************

public void run() { // Called whenever the graphics thread ticks

while (running) { // Make sure the applet isn't exiting

FontMetrics fm= backbuffer.getGraphics().getFontMetrics(backbuffer.getGraphics().getFont());

java.awt.geom.Rectangle2D rect = fm.getStringBounds(MOTD, backbuffer.getGraphics());

int MOTDHeight = (int)(rect.getHeight());

int MOTDWidth = (int)(rect.getWidth()); // Find the position of the MOTD, so It's centered

backbufferg.setColor(Color.black);

backbufferg.fillRect(0,0,800,600); // Clear the screen

if(frame<=25) {

backbufferg.drawImage(JimmywareLogo,0,0,this);

backbufferg.setColor(new Color(0,0,0,255-(frame*10)));

backbufferg.fillRect(0,0,800,600);

} else if(frame<=100) {

backbufferg.drawImage(JimmywareLogo,0,0,this);

} else if(frame<=125) {

backbufferg.drawImage(JimmywareLogo,0,0,this);

backbufferg.setColor(new Color(0,0,0,(frame-100)*10));

backbufferg.fillRect(0,0,800,600);

} else if(frame<=150) {

backbufferg.drawImage(Loading,200,100,this);

backbufferg.setColor(Color.gray);

backbufferg.drawRect(200,375,400,20);

backbufferg.drawString("Loading graphics...",200,365);

backbufferg.setColor( Color.white );

backbufferg.drawString(MOTD, 400-(MOTDWidth/2), 10 );

backbufferg.setColor(new Color(0,0,0,255-((frame-125)*10)));

backbufferg.fillRect(0,0,800,600);

} else if(frame<=151){

backbufferg.drawString("Connecting to server...",200,365);

backbufferg.drawImage(Loading,200,100,this);

backbufferg.setColor(Color.gray);

//backbufferg.drawRect(200,375,400,20);

backbufferg.setColor(Color.gray);

//backbufferg.fillRect(202,377,(int)width,17);

backbufferg.setColor( Color.white );

backbufferg.drawString(MOTD, 400-(MOTDWidth/2), 10 );

login = getImage(base,"login.jpg");

mt.addImage(login,1);

try {

mt.waitForAll();

} catch (InterruptedException e) {}

repaint();

ConnectToServer();

} else {

UserNameField = new JTextField("", 100);

UserNameField.setBounds(316,286,286,32);

if(frame==152) { add(UserNameField); }

backbufferg.drawImage(login,0,0,this);

} // end if

repaint();

try {

graphicsThread.sleep(30);

} catch (InterruptedException e) {

System.out.println(e);

} // end catch

frame++; // Go to the next frame

} // end while

} // end run

public void ConnectToServer() {

try {

ldSocket = new Socket(IP, 4444);

out = new PrintWriter(ldSocket.getOutputStream(), true);

in = new BufferedReader(new InputStreamReader(ldSocket.getInputStream()));

} catch (UnknownHostException e) {

backbufferg.setColor(Color.white);

backbufferg.drawString("Sorry, the connection to the server " + IP + " on port 4444 failed. Please try again later.",10,10);

repaint();

running=false;

} catch (IOException e) {

backbufferg.setColor(Color.white);

backbufferg.drawString("Sorry, the connection to the server " + IP + " on port 4444 failed. Please try again later.",10,10);

repaint();

running=false;

}

BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));

String fromServer;

String fromUser;

} // end ConnectToServer

} // end class LegerDomain

:)

Aniruddha-Herea at 2007-7-15 4:53:16 >