How to convert java standalone application into applet

[chirayu]

Hi ,
I am newbie to java. Created a simple application and i want to run it as an applet.
Please help me out.
Here is my code....

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.AffineTransform;

import javax.swing.JComponent;
import javax.swing.JFrame;

public class AffineTransformTest {

private static TransformingCanvas canvas;

public static void main(String[] args) {
JFrame frame = new JFrame();
canvas = new TransformingCanvas();
TranslateHandler translater = new TranslateHandler();
canvas.addMouseListener(translater);
canvas.addMouseMotionListener(translater);
canvas.addMouseWheelListener(new ScaleHandler());
frame.setLayout(new BorderLayout());
frame.getContentPane().add(canvas, BorderLayout.CENTER);
frame.setSize(500, 500);
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_C LOSE);
frame.setVisible(true);
}

private static class TransformingCanvas extends JComponent {
private double translateX;
private double translateY;
private double scale;

TransformingCanvas() {
translateX = 0;
translateY = 0;
scale = 1;
setOpaque(true);
setDoubleBuffered(true);
}

@Override public void paint(Graphics g) {

AffineTransform tx = new AffineTransform();
tx.translate(translateX, translateY);
tx.scale(scale, scale);
Graphics2D ourGraphics = (Graphics2D) g;
ourGraphics.setColor(Color.WHITE);
ourGraphics.fillRect(0, 0, getWidth(), getHeight());
ourGraphics.setTransform(tx);
ourGraphics.setRenderingHint(RenderingHints.KEY_AN TIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
ourGraphics.setRenderingHint(RenderingHints.KEY_TE XT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
ourGraphics.setColor(Color.BLACK);
ourGraphics.drawRect(50, 50, 50, 50);
ourGraphics.fillOval(100, 100, 100, 100);
ourGraphics.drawString("Test Affine Transform", 50, 30);
// super.paint(g);
}
}

private static class TranslateHandler implements MouseListener,
MouseMotionListener {
private int lastOffsetX;
private int lastOffsetY;

public void mousePressed(MouseEvent e) {
// capture starting point
lastOffsetX = e.getX();
lastOffsetY = e.getY();
}

public void mouseDragged(MouseEvent e) {

// new x and y are defined by current mouse location subtracted
// by previously processed mouse location
int newX = e.getX() - lastOffsetX;
int newY = e.getY() - lastOffsetY;

// increment last offset to last processed by drag event.
lastOffsetX += newX;
lastOffsetY += newY;

// update the canvas locations
canvas.translateX += newX;
canvas.translateY += newY;

// schedule a repaint.
canvas.repaint();
}

public void mouseClicked(MouseEvent e) {}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mouseMoved(MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}
}

private static class ScaleHandler implements MouseWheelListener {
public void mouseWheelMoved(MouseWheelEvent e) {
if(e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {

// make it a reasonable amount of zoom
// .1 gives a nice slow transition
canvas.scale += (.1 * e.getWheelRotation());
// don't cross negative threshold.
// also, setting scale to 0 has bad effects
canvas.scale = Math.max(0.00001, canvas.scale);
canvas.repaint();
}
}
}

}

[DarrylBurke]

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db

[DarrylBurke]

I am newbie to java. Created a simple application

3½ years ago?
https://forums.oracle.com/forums/thr...readID=1262753

Don't try to take credit for someone else's code. you couldn't even apply the good advice further down in that thread.

Or did you lift it from Experts-Exchange?

db

[chirayu]

3½ years ago?
https://forums.oracle.com/forums/thr...readID=1262753

Don't try to take credit for someone else's code. you couldn't even apply the good advice further down in that thread.

Or did you lift it from Experts-Exchange?

db

I think didnt use the correct words.......inspite of creating i would hace used i have piece of code and I am trying to learn to put that in applet...........Sorry , But I dont wanna steal someone's code..........and i am newbie just wanna help from java experts.

[chirayu]

db that guy in oracle forum took it from Java2D: Have Fun With Affine Transform :)

[DarrylBurke]

Learn Java: The Java™ Tutorials

If you already know the basics, you'll want to focus on the Java 2D and Applet deployment sections, as well as the Swing trail.

db

[chirayu]

Basically I am C programmer ....due project requirement i need to do this patch asap......just send me the code to deploy that in applet....i will atleast learn by wat you did.....I know its iritating but thats Y i knocked your forum to be straight n true....

[Tolls]

You have a project requirement to take code you found on the internet and turn it into an applet?

[chirayu]

No its just a prototype i took..........its just a sample..........I just want to know how can i deploy that in applets if it is standalone application......
I have my own code which works like this :
First it reads all parameters from HTML tags and stores in global variables. Then it sends query to CGI to read graph data. Then it converts data for plotting and draws graph. There is a option for user to select 1-24 hours. Based on the selection graph will be plotted by plotting only selected data. Every 30 sec it sends query to CGI for collecting data.

I need to add zooming feature in it. As it is completely in awt....so just wanna know how can i deploy a code which uses frames and all swing components........Please if you guys can stop interrogating and can just do some real work.......

[Norm]

Please if you guys can stop interrogating and can just do some real work.......

How can we help you learn how to write the java code you want to write?
If you are looking for someone to write code for you, you've come to the wrong spot.

[chirayu]

How can we help you learn how to write the java code you want to write?
If you are looking for someone to write code for you, you've come to the wrong spot.

I am not asking to write code ..i m asking how to implement zooming with using awt classes and functions....i need the suggestion..........I have planed to use AffineTransform ...but it just zoom my image...i have graph...........i want that... when i zoom ...only the contents inside gets zoomed and accordingly x-y axis should get granualar.....Here i am bothered about granuality of x-y axis when zoom in happens so that graph ploted gives me more accurate values on x-y axis....

[Norm]

Can you post the code you are working with as a small program that compiles, executes and shows the problem?
This part of your problem about drawing graphs and zooming should be posted in another part of the forum. This section is for applets.

[chirayu]

import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.awt.geom.AffineTransform;
import java.util.*;
import java.text.*;

import javax.swing.JComponent;
import javax.swing.JFrame;

public class AffineTransformTest {

	private static TransformingCanvas canvas;
	public static int SIZE_X			= 480;
	public static int	SIZE_Y			= 250;
	public static int	SIZE_Y1			= 240;
	public static int xOffset = 50;
	public	static int yOffset = 40;

	public	static int Y1_MAX_VALUE = 100;

	public static int Y2_MAX_VALUE = 3;

	public	static int MAX_NUM_INTERVELL_PER_DAY = 96;
	public static int 	duration=1;
	public static int sizeY = SIZE_Y;


	public static void main(String[] args) {
		JFrame frame = new JFrame();
		canvas = new TransformingCanvas();
		TranslateHandler translater = new TranslateHandler();
		canvas.addMouseListener(translater);
		canvas.addMouseMotionListener(translater);
		canvas.addMouseWheelListener(new ScaleHandler());
		frame.setLayout(new BorderLayout());
		frame.getContentPane().add(canvas, BorderLayout.CENTER);
		frame.setSize(500, 500);
		frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		frame.setVisible(true);
	}

	private static class TransformingCanvas extends JComponent {
		private double translateX;
		private double translateY;
		private double scale;

		TransformingCanvas() {
			translateX = 0;
			translateY = 0;
			scale = 1;
			setOpaque(true);
			setDoubleBuffered(true);
		}

		@Override public void paint(Graphics g) {

				Color 	plotColor1,plotColor2,plotColor3,plotColor4,plotColor5,plotColor6,plotColor7,plotColor8,plotColor9,plotColor10;

			plotColor1 		= Color.orange;
				plotColor2 		= Color.black;
				plotColor3 		= Color.blue;
				plotColor4 		= Color.magenta;
				plotColor5 		= Color.cyan;
				plotColor6 		= Color.pink;
				plotColor7 		= Color.gray;
				plotColor8		= Color.red;
				plotColor9		= Color.green;
	plotColor10		= Color.lightGray;

			AffineTransform tx = new AffineTransform();
			tx.translate(translateX, translateY);
			tx.scale(scale, scale);
			Graphics2D ourGraphics = (Graphics2D) g;
			ourGraphics.setColor(Color.WHITE);
			ourGraphics.fillRect(0, 0, getWidth(), getHeight());
			ourGraphics.setTransform(tx);
			ourGraphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
					RenderingHints.VALUE_ANTIALIAS_ON);
			ourGraphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
					RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
			ourGraphics.setColor(Color.BLACK);
			ourGraphics.drawRect(50, 50, 50, 50);
			ourGraphics.fillOval(100, 100, 100, 100);
			ourGraphics.drawString("Test Affine Transform", 50, 30);

			g.setColor(Color.black);
				g.drawString("ES" , xOffset, 10);
				g.drawString("SES", xOffset+30,10);
				g.drawString("BBE", xOffset+60,10);
				g.drawString("UAS",xOffset+90,10);
				g.drawString("ESR", xOffset+120,10);
				g.drawString("SESR", xOffset+160,10);
				g.drawString("BBER" , xOffset+200,10);
				g.drawString("SUSPECT",xOffset+240,10);
				g.drawString("TIME-ELAPSED",xOffset+310,10);

				g.setColor(plotColor1);
				g.fillRect(xOffset+5, 15, 12, 8);

				g.setColor(plotColor2);
				g.fillRect(xOffset+35, 15, 12, 8);

				g.setColor(plotColor3);
				g.fillRect(xOffset+65, 15, 12, 8);

				g.setColor(plotColor4);
				g.fillRect(xOffset+95, 15, 12, 8);

				g.setColor(plotColor5);
				g.fillRect(xOffset+125, 15, 12, 8);

				g.setColor(plotColor6);
				g.fillRect(xOffset+170, 15, 12, 8);

				g.setColor(plotColor7);
				g.fillRect(xOffset+210, 15, 12, 8);

				g.setColor(plotColor8);
				g.fillRect(xOffset+260, 15, 12, 8);

				g.setColor(plotColor9);
				g.fillRect(xOffset+340, 15, 12, 8);
				/*<Bugzilla><1903><07-Dec-2009><RR><END>*/
	g.setColor(Color.black);

			/*Dram Graph boarder */
				g.drawRect(xOffset,yOffset,SIZE_X,sizeY);
				g.drawRect(xOffset-1,yOffset-1,SIZE_X+2,sizeY+2);

			   /*Plot X axis*/
				int max_x_marks = 8;
				int temp = 1,cnt_graph = 0;
				int float_temp,float_temp2;

				/*max 8 plots on x axis*/
				for(int x=max_x_marks; x>0; x--)
				{

					float_temp = (int)((MAX_NUM_INTERVELL_PER_DAY*duration)/max_x_marks)*((max_x_marks+1)-x);
					float_temp2 = SIZE_X-(60*cnt_graph);

					g.drawString(String.valueOf(float_temp),(float_temp2-20) ,SIZE_Y+yOffset+35);
					cnt_graph++;
				}

				/*Plot Y1 AXIS*/
				temp = Y1_MAX_VALUE;
				for(int x = 0; x <= SIZE_Y; x+= 25)
				{
					g.drawString(String.valueOf(temp), 25, x + yOffset+10);
					temp -= (Y1_MAX_VALUE - 0)/10;
				}
				temp = 1000;
				 /*Plot Y2 AXIS*/
				int index_log = 1;
				for(int x = 0; x <= SIZE_Y1; x+= 80)
				{
					if(x== 240)
					index_log--;
					if(temp>=1)
					{
						g.drawString(String.valueOf(temp), 550, x+yOffset+8-index_log);
						g.drawLine(530,x+yOffset+5-index_log, 540, x+yOffset+5-index_log);
					}
					temp = temp/10;
				}

				Font thisFont = new Font("Times New Roman", Font.BOLD, 14);
				g.setFont(thisFont);
				g.drawString("Y2", 550, 160);
	g.drawString("Y1",5, 160);
			// super.paint(g);
		}
	}

	private static class TranslateHandler implements MouseListener,
			MouseMotionListener {
		private int lastOffsetX;
		private int lastOffsetY;

		public void mousePressed(MouseEvent e) {
			// capture starting point
			lastOffsetX = e.getX();
			lastOffsetY = e.getY();
		}

		public void mouseDragged(MouseEvent e) {

		// new x and y are defined by current mouse location subtracted
			// by previously processed mouse location
			int newX = e.getX() - lastOffsetX;
			int newY = e.getY() - lastOffsetY;

			// increment last offset to last processed by drag event.
			lastOffsetX += newX;
			lastOffsetY += newY;

			// update the canvas locations
			canvas.translateX += newX;
			canvas.translateY += newY;

			// schedule a repaint.
			canvas.repaint();
		}

		public void mouseClicked(MouseEvent e) {}
		public void mouseEntered(MouseEvent e) {}
		public void mouseExited(MouseEvent e) {}
		public void mouseMoved(MouseEvent e) {}
		public void mouseReleased(MouseEvent e) {}
	}

	private static class ScaleHandler implements MouseWheelListener {
		public void mouseWheelMoved(MouseWheelEvent e) {
			if(e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {

				// make it a reasonable amount of zoom
				// .1 gives a nice slow transition
				canvas.scale += (.1 * e.getWheelRotation());
				// don't cross negative threshold.
				// also, setting scale to 0 has bad effects
				canvas.scale = Math.max(0.00001, canvas.scale);
				canvas.repaint();
			}
		}
	}

}

[Norm]

You should post this question on:
Java 2D or
AWT / Swing

Not related to applets.

[DarrylBurke]

Reposted in AWT/Swing: Zooming in graph using awt/swing

db

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