Updating my GUI

[Catkill]

I have a GUI ready set up and added to a frame using the setContentframe(a JPanel) function

When a user clicks a button i want one of the components(well my class extending component) to change its image - its image is changed via a setImage(Image) function.

Although when i set its new image the GUI doesnt update to the new image - how would i go about this?

Oh yeah the components are stored in an array and im just using an component[i].setImage(imageload.getimage()); - could be important

thanks in advance
Catkill

[mrmatt1111]

How do u draw this image? is it in a custom paintComponent(...)? Do you call repaint() when you call setImage?

[Catkill]

heres the full class for the Component

package Version1;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JPanel;

public class PanelBorder extends JPanel{
	
	private final int cardHeight = 40;
	private final int cardWidth = 30;
	
	private Image card = null;
	
	public void setImage(Image image){
		this.card = image;
		draw();
	}
	
	public PanelBorder(){
		this.setPreferredSize(new Dimension(cardWidth + 5,cardHeight+10));
	}
	
	public PanelBorder(Image image){
		this.card = image;
		this.setPreferredSize(new Dimension(cardWidth,cardHeight));
	}
	
	public Image getImage(){
		return card;
	}
	
	public void draw(){
		repaint();
	}
	
	public void paintComponent(Graphics g){
		super.paintComponent(g);
		
		if(card == null){
			g.setColor(Color.black);
			g.drawRect(0, 0, cardWidth, cardHeight);
		}
		if(card != null){
			g.drawImage(getImage(),0,0,null);
		}
		
		
		
	}
	
}

thanks

[mrmatt1111]

Next question... is the image null? i.e. is it drawing the black rectangle?

[Catkill]

It draws the black rectangle when i create the component and add its to its JPanel inside a main JPanel inside a frame, as it should, but when i give it an image it still draws the rectangle - or doesnt change from it?

[DarrylBurke]

You neglected to show how you are loading the image. That may be a clue to the problem.

db

[Catkill]

I am using my imageLoader class :

package Version1;

import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Transparency;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;

import javax.imageio.ImageIO;

public class ImageLoader {
	
	private static ImageLoader single = new ImageLoader();
	
	public static ImageLoader get(){
		return single;
	}
	
	private HashMap<String,Image> Images = new HashMap<String,Image>();
	//private HashMap<String,CardHolder> Images = new HashMap<String,CardHolder>();
	
	public Image getCard(String ref,String i){
		
		if(Images.get(ref + ".jpg" + i) != null){
			System.out.println("Image found");
			return  Images.get(ref);	
		}
		
		System.out.println("Cannot find the image");
		return null;
	}
	
	public Image getCard(String ref,int x,int y,int x1,int x2,int y1,int y2,int loop){
		Rectangle region = new Rectangle(x,y);
		
		if(Images.get(ref) != null){
			return Images.get(ref);
		}
		
		BufferedImage sourceImage = null;
		
		try{
			sourceImage = ImageIO.read(new File(ref));
		}
		catch(IOException e){
			System.out.print("Unable to Load: " + ref);
		}
		
		GraphicsConfiguration gc = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration();
		Image image = gc.createCompatibleImage(sourceImage.getWidth(),sourceImage.getHeight(),Transparency.BITMASK);
		
		image.getGraphics().drawImage(sourceImage, region.x, region.y, region.x + region.width, region.y + region.height, x1, y1, x2, y2, null);
		
		
		Images.put(ref + (loop+2), image);
		System.out.println(ref + (loop+2));
		
		return image;
	}
	
	

}

Hope this helps more