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Thread: Button Won't Stop Animation.

  1. #1
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    Question Button Won't Stop Animation.

    package four.work.course;
     
    import java.awt.BorderLayout;
    import java.awt.Color;
    import java.awt.Graphics;
    import javax.swing.JFrame;
    import javax.swing.JPanel;
    // import java.util.Random;
     
    public class MovingShapes {
     
    	protected JFrame frameCW4 = new JFrame("CourseWork Four");
    	private FirstDrawPanel firstDrawPanel = new FirstDrawPanel();
    	private SecondDrawPanel secondDrawPanel = new SecondDrawPanel();
    	private int xCoord = 0, yCoord = 0;
    	private int counter;
    	final private byte LOOPBACK  = 0;
    	protected boolean status = true;
    	// private Random generator = new Random();
     
     
    	protected void setUpComponents()
    	{
    		frameCW4.setVisible(true);
    		frameCW4.setSize(500,500);
    		frameCW4.getContentPane().add(BorderLayout.CENTER, firstDrawPanel);
    		frameCW4.getContentPane().add(BorderLayout.NORTH, secondDrawPanel);
    		frameCW4.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    	}
     
    	protected void animationManager(String direction)
    	{
    		String buffer;
    		buffer = direction.toString().trim();
     
    		if (buffer.equalsIgnoreCase("PartA"))
    		{
    			for (  counter = 0; counter < frameCW4.getWidth(); counter++ )
    			{
    				for ( counter = 0; counter < frameCW4.getHeight(); counter ++)
    				{
    					{
    						// xCoord = generator.nextInt(frameCW4.getWidth());
    						// yCoord = generator.nextInt(frameCW4.getHeight());
     
    						 xCoord++;
    						 yCoord++;
     
    						try 
    						{
    							Thread.sleep(5);
    							firstDrawPanel.repaint();
    							secondDrawPanel.repaint();
    						}
    						catch (InterruptedException e)
    						{
    							e.printStackTrace();
    						}		
    					}
    				}
    			}
    		}
    	}
     
    	protected void retrace(boolean check)
    	{
    		while (status == true)
    		{
    			for (counter = LOOPBACK; counter <= frameCW4.getWidth(); counter++ )
    			{
    				for (counter = LOOPBACK; counter <= frameCW4.getHeight(); counter++)
    				{
    						{
    							// System.out.println(counter);
    							// xCoord = generator.nextInt(frameCW4.getWidth());
    							// yCoord = generator.nextInt(frameCW4.getHeight());
     
    							xCoord++;
    							yCoord++;
     
    							try 
    							{
    								Thread.sleep(5);
    								firstDrawPanel.repaint();
    								secondDrawPanel.repaint();
    							}
    							catch (InterruptedException e)
    							{
    								e.printStackTrace();
    							}	
    						}
    				}
    			}
     
    			for ( counter = frameCW4.getWidth(); counter >= LOOPBACK; counter--)
    			{
    				for (counter = frameCW4.getHeight(); counter >= LOOPBACK; counter --)
    				{
    					xCoord--;
    					yCoord--;
     
    					try 
    					{
    						Thread.sleep(5);
    						firstDrawPanel.repaint();
    						secondDrawPanel.repaint();
    					}
    					catch (InterruptedException e)
    					{
    						e.printStackTrace();
    					}
    				}
    			}
    		}
    	}
     
    	class FirstDrawPanel extends JPanel
    	{	
    		public void paintComponent(Graphics g)
    		{
    			g.setColor(Color.WHITE); 
    			g.fillRect(0, 0, this.getWidth(), this.getHeight());
    			g.setColor(Color.BLUE);
    			g.fillOval(xCoord, yCoord, 50, 50);
    		}
    	} 
    	class SecondDrawPanel extends JPanel
    	{
    		public void paintComponent(Graphics g)
    		{
    			g.setColor(Color.WHITE); 
    			g.fillRect(0, 0, this.getWidth(), this.getHeight());
    			g.setColor(Color.ORANGE);
    			g.fillRect(xCoord, 0, 50, 50);
    		}
    	}
     
    	public static void main(String[] args)
    	{
    		MovingShapes ms = new MovingShapes();
    		ms.setUpComponents();
    		ms.animationManager("PartA");	
    	}
    }

    package four.work.course;
     
    import java.awt.BorderLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import javax.swing.JButton;
     
    public class MovingShapesButton extends MovingShapes implements ActionListener
    {	
    	private MovingShapes ms = new MovingShapes();
    	private JButton btnStopAnimation = new JButton("Stop Animation");
     
    	MovingShapesButton()
    	{	
    		ms.frameCW4.getContentPane().add(BorderLayout.SOUTH, btnStopAnimation);
    		btnStopAnimation.addActionListener(this);
    		ms.setUpComponents();
    		ms.retrace(true);
    	}
     
    	public void actionPerformed(ActionEvent e)
    	{
    	}
     
    	public static void main(String[] args)
    	{
    		MovingShapesButton msb = new MovingShapesButton();
    	}
     
    }

    Help me out guys?
    Last edited by SyntheticD; March 23rd, 2011 at 09:41 PM.


  2. #2
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    Default Re: Button Won't Stop Animation.

    Well, you're ActionListener appears to be blank.

    You could have
    public void actionPerformed(ActionEvent e)
    	{
     
    if (e.getActionCommand().equals("Stop Animation"))
    {
    // get it to stop the animation somehow
    }
    	}

  3. #3
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    Default Re: Button Won't Stop Animation.

    Quote Originally Posted by javapenguin View Post
    Well, you're ActionListener appears to be blank.

    You could have
    public void actionPerformed(ActionEvent e)
    	{
     
    if (e.getActionCommand().equals("Stop Animation"))
    {
    // get it to stop the animation somehow
    }
    	}
    Any theories on the "somehow" part.. I had some code in there, but when I clicked the button, it freezed. That's why I removed it.

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    Default Re: Button Won't Stop Animation.

    No such word as freezed. It froze!

  5. #5
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    Post Re: Button Won't Stop Animation.

    That's Java for you.

    What was your code in there. Perhaps we, if not me since I'm bad at animation, others could figure out why it "Freezed!"

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    Default Re: Button Won't Stop Animation.

    For animation you should really use a SwingTimer (see How to Use Swing Timers (The Java™ Tutorials > Creating a GUI With JFC/Swing > Using Other Swing Features) ). Going into a while loop to accomplish animation is not the best way to go about it, especially given the single threaded model of Swing

  7. The Following User Says Thank You to copeg For This Useful Post:

    javapenguin (March 24th, 2011)

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