Drawing an image on a JDialog?

I need to use a JDialog so that the user can not perform any other task apart from the ones avaliable on the current window, but I need a picture so that used can see the out come of selecting on the buttons in the window. At the moment I am declaring a Graphics object and simply drawing them in the normal way, but now the buttons and window are not even appearing at all.
Graphics a = getGraphics();
String name = "simprook1.gif";
Image image = Toolkit.getDefaultToolkit().getImage(name);
a.drawImage(image, 0, 0, 75, 75, null);
Any help would be appreciated.
Kindest Reguards.

Howdy
Use JOptionPane.showMessageDialog. The message argument can be an object - if it is a JComponent subclass it will be displayed.. so use it to display your graphic and other controls etc.
Rob

Similar Messages

How to use the Rectangle class to draw an image and center it in a JPanel

I sent an earlier post on how to center an image in a JPanel using the Rectangle class. I was asked to send an executable code which will show the malfunction. The code below is an executable code and a small part of a very big project. To simplifiy things, it is just a JFrame and a JPanel with an open dialog. Once executed the JFrame and the FileDialog will open. You can then navigate to a .gif or a .jpg picture and open it. What I want is for the picture to be centered in the middle of the JPanel and not the upper left corner. It is also important to stress that, I am usinig the Rectangle class to draw the Image. The region of interest is where the rectangle is created. In the constructor of the CenterRect class, I initialize the Rectangle class. Then I use paintComponent in the CenterRect class to draw the Image. The other classes are just support classes. The MyImage class is an extended image class which also has a draw() method. Any assistance in getting the Rectangle to show at the center of the JPanel without affecting the size and shape of the image will be greatly appreciated.
I have divided the code into three parts. They are all supposed to be on one file in order to execute.
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
public class CenterRect extends JPanel {
    public static Rectangle srcRect;
    Insets insets = null;
    Image image;
    MyImage imp;
    private double magnification;
    private int dstWidth, dstHeight;
    public CenterRect(MyImage imp){
        insets = getInsets();
        this.imp = imp;
        int width = imp.getWidth();
        int height = imp.getHeight();
        ImagePanel.init();
        srcRect = new Rectangle(0,0, width, height);
        srcRect.setLocation(0,0);
        setDrawingSize(width, height);
        magnification = 1.0;
    public void setDrawingSize(int width, int height) {
        dstWidth = width;
        dstHeight = height;
        setSize(dstWidth, dstHeight);
    public void paintComponent(Graphics g) {
        Image img = imp.getImage();
     try {
            if (img!=null)
                g.drawImage(img,0,0, (int)(srcRect.width*magnification), (int)(srcRect.height*magnification),
          srcRect.x, srcRect.y, srcRect.x+srcRect.width, srcRect.y+srcRect.height, null);
        catch(OutOfMemoryError e) {e.printStackTrace();}
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Opener().openImage();
class Opener{
    private String dir;
    private String name;
    private static String defaultDirectory;
    JFrame parent;
    public Opener() {
        initComponents();
     public void initComponents(){
        parent = new JFrame();
        parent.setContentPane(ImagePanel.panel);
        parent.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
        parent.setExtendedState(JFrame.MAXIMIZED_BOTH);
        parent.setVisible(true);
    public void openDialog(String title, String path){
        if (path==null || path.equals("")) {
            FileDialog fd = new FileDialog(parent, title);
            defaultDirectory = "dir.image";
            if (defaultDirectory!=null)
                fd.setDirectory(defaultDirectory);
            fd.setVisible(true);
            name = fd.getFile();
            if (name!=null) {
                dir = fd.getDirectory();
                defaultDirectory = dir;
            fd.dispose();
            if (parent==null)
                return;
        } else {
            int i = path.lastIndexOf('/');
            if (i==-1)
                i = path.lastIndexOf('\\');
            if (i>0) {
                dir = path.substring(0, i+1);
                name = path.substring(i+1);
            } else {
                dir = "";
                name = path;
    public MyImage openImage(String directory, String name) {
        MyImage imp = openJpegOrGif(dir, name);
        return imp;
    public void openImage() {
        openDialog("Open...", "");
        String directory = dir;
        String name = this.name;
        if (name==null)
            return;
        MyImage imp = openImage(directory, name);
        if (imp!=null) imp.show();
    MyImage openJpegOrGif(String dir, String name) {
            MyImage imp = null;
            Image img = Toolkit.getDefaultToolkit().getImage(dir+name);
            if (img!=null) {
                imp = new MyImage(name, img);
                FileInfo fi = new FileInfo();
                fi.fileFormat = fi.GIF_OR_JPG;
                fi.fileName = name;
                fi.directory = dir;
                imp.setFileInfo(fi);
            return imp;
}

This is the second part. It is a continuation of the first part. They are all supposed to be on one file.
class MyImage implements ImageObserver{
    private int imageUpdateY, imageUpdateW,width,height;
    private boolean imageLoaded;
    private static int currentID = -1;
    private int ID;
    private static Component comp;
    protected ImageProcessor ip;
    private String title;
    protected Image img;
    private static int xbase = -1;
    private static int ybase,xloc,yloc;
    private static int count = 0;
    private static final int XINC = 8;
    private static final int YINC = 12;
    private int originalScale = 1;
    private FileInfo fileInfo;
    ImagePanel win;
    /** Constructs an ImagePlus from an AWT Image. The first argument
     * will be used as the title of the window that displays the image. */
    public MyImage(String title, Image img) {
        this.title = title;
         ID = --currentID;
        if (img!=null)
            setImage(img);
    public boolean imageUpdate(Image img, int flags, int x, int y, int w, int h) {
         imageUpdateY = y;
         imageUpdateW = w;
         imageLoaded = (flags & (ALLBITS|FRAMEBITS|ABORT)) != 0;
     return !imageLoaded;
    public int getWidth() {
         return width;
    public int getHeight() {
         return height;
    /** Replaces the ImageProcessor, if any, with the one specified.
     * Set 'title' to null to leave the image title unchanged. */
    public void setProcessor(String title, ImageProcessor ip) {
        if (title!=null) this.title = title;
        this.ip = ip;
        img = ip.createImage();
        boolean newSize = width!=ip.getWidth() || height!=ip.getHeight();
     width = ip.getWidth();
     height = ip.getHeight();
     if (win!=null && newSize) {
            win = new ImagePanel(this);
    public void draw(){
        CenterRect ic = null;
        win = new ImagePanel(this);
        if (win!=null){
            win.addIC(this);
            win.getCanvas().repaint();
            ic = win .getCanvas();
            win.panel.add(ic);
            int width = win.imp.getWidth();
            int height = win.imp.getHeight();
            Point ijLoc = new Point(10,32);
            if (xbase==-1) {
                xbase = 5;
                ybase = ijLoc.y;
                xloc = xbase;
                yloc = ybase;
            if ((xloc+width)>ijLoc.x && yloc<(ybase+20))
                yloc = ybase+20;
                int x = xloc;
                int y = yloc;
                xloc += XINC;
                yloc += YINC;
                Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
                count++;
                if (count%6==0) {
                    xloc = xbase;
                    yloc = ybase;
                int scale = 1;
                while (xbase+XINC*4+width/scale>screen.width || ybase+YINC*4+height/scale>screen.height)
                    if (scale>1) {
               originalScale = scale;
               ic.setDrawingSize(width/scale, height/scale);
    /** Returns the current AWT image. */
    public Image getImage() {
        if (img==null && ip!=null)
            img = ip.createImage();
        return img;
    /** Replaces the AWT image, if any, with the one specified. */
    public void setImage(Image img) {
        waitForImage(img);
        this.img = img;
        JPanel panel = ImagePanel.panel;
        width = img.getWidth(panel);
        height = img.getHeight(panel);
        ip = null;
    /** Opens a window to display this image and clears the status bar. */
    public void show() {
        show("");
    /** Opens a window to display this image and displays
     * 'statusMessage' in the status bar. */
    public void show(String statusMessage) {
        if (img==null && ip!=null){
            img = ip.createImage();
        if ((img!=null) && (width>=0) && (height>=0)) {
            win = new ImagePanel(this);
            draw();
    private void waitForImage(Image img) {
    if (comp==null) {
        comp = ImagePanel.panel;
        if (comp==null)
            comp = new JPanel();
    imageLoaded = false;
    if (!comp.prepareImage(img, this)) {
        double progress;
        while (!imageLoaded) {
            if (imageUpdateW>1) {
                progress = (double)imageUpdateY/imageUpdateW;
                if (!(progress<1.0)) {
                    progress = 1.0 - (progress-1.0);
                    if (progress<0.0) progress = 0.9;
public void setFileInfo(FileInfo fi) {
    fi.pixels = null;
    fileInfo = fi;
}

Learning iPhone SDK - Trying to draw an image

Although I have programmed for Mac in the last years, I have never used Mac-specific technologies as Cocoa (I have programmed more in OpenGL, SDL, and the like).
Now I am getting started with the iPhone SDK. I'd like to do some OpenGL|ES stuff, but since it is not supported in the Simulator, and you need to join the Developer Program to test stuff on directly on the device (and admission of new members is closed right now), I am focused on other stuff right now, like using Core Graphics for drawing images on the iPhone.
My application is based on the Cocoa Touch Application template. I left the default code except for a few changes.
In file "UntitledAppDelegate.m", I have changed the method applicationDidFinishLaunching to:
- (void)applicationDidFinishLaunching:(UIApplication *)application {
window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
contentView = [[[MyView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]] autorelease];
[window addSubview:contentView];
[window makeKeyAndVisible];
Then, in the MyView interface file (MyView.h), I have added the attribute "UIImageView* image;" to the class, which is declared as a property, and synthesized.
In the class implementation (MyView.m), I have changed the method initWithFrame to:
- (id)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame]) {
self.backgroundColor = [UIColor darkGrayColor];
image = [self loadImageView:@"box01.png"];
[self addSubview:image];
return self;
loadImageView is a private method I have implemented as:
- (UIImageView *)loadImageView:(NSString *) imageName {
UIImage *img = [UIImage imageNamed:imageName];
UIImageView *theView = [[UIImageView alloc] initWithImage:img];
return theView;
Since I have loaded the UIImage, and initialized a UIImageView with it, and the image view is added as a subview of the main view attached to the window, I thought it should be everything needed to draw an image on the screen. But nothing is visible. The screen is simply black when I run this on the Simulator. It doesn't even set the background to dark gray.
So I need some help with this, I sure that anyone with experience in Mac programming will know how to help me.
Thank you in advance.
Message was edited by: Jedive

I removed the XIB file from the project, but that didn't help. It was a problem with my inexperience with Objective-C. When accessing class properties in a method of the same class, i was not putting "self." before the property (in C++ that's redundant). For example, in the line "window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];". After adding it, it works correctly.

What's the RIGHT way to draw an image in the upper left corner?

I have an NSView in a ScrollView and I'm trying to draw an image in it. The problem is that I want the upper left corner of the image locked to the upper left corner of the frame, instead of the lower left corner, which is what the View wants me to do. I will need to be able to zoom in and out, and rotate.
currently, I have a kludge of a system where I calculate how much I have to translate my image based on the size of the image and the size of the window. In order to do this, I needed to create an extra view outside the scrollview, so that I could get the size of the window, not including decorations. Then I can calculate the size of the view based on the size of the image and the size of the window, and based on THAT, I can figure out where to translate the image to.
My only other thought was to use the isFlipped: method, but that ends up reversing my image L-R which is bad.
Is there another way I should be doing this?
thanks.

Ah, the problem is that the content view includes the control panel, and while I'm sure I can get access to the control panel, and find out it's size, and then calculate everything off that, it becomes messy, and my way is easier, and no more messy.
And I never said this was HARD. I have already DONE it. It's just ugly, and I'm wondering if there is a better way to do it. Translating between coordinate systems is normal, but changing lower left to upper left origin is an artifact of the Mac's history with PDF and PS.
If the way I'm doing it is the accepted normal way, then fine, just tell me that.

How do I draw an image on a JPanel?

To be honest I have no idea even where to start. I tried hacking through the tutorials but it just didn't help me (normally they do, I don't what's up).
Anyway, so what I'm trying to do is build a game. The Graphics2D is great for simple shapes but drawing characters is getting kind of ridiculous (tedious + difficult + looks bad). So, I need to figure out how to display an image on a JPanel.
To that end I have several questions.
1 - What image type do I use? Like jpeg, bmp, gif, etc.
2 - How do I make parts of it transparent?
3 - How do I make it appear on the screen, given some coordinates on the JPanel?

To draw an image directly to a JPanel given certain coordinates, you have to create a custom JPanel and override its paintComponent() method. Like this:
class PaintPanel extends JPanel{
public void paintComponent(Graphics g){
super.paintComponent(g);
//painting code goes here}
}Java can load in and draw GIF and JPEG images. If you decide to use GIF files, any good image editor like Adobe Photoshop should be able to make them transparent for you before the fact. If you want to set transparency within your java program you will have to create a BufferedImage and make certain colors within it transparent, but I would like to know how to do that as much as you do.

How can I draw an image in the browser using mouse

I have to draw an image in the browser and have to store a file in the server and I don't know how can I do it. Is there anybody who konw it.

Components other than applets cannot be downloaded into client machines
unleess There is a Java Web Start kind of Mechanism present on client and the server also supports
this .Hence your application is between Applet ---Xdownloadable ApplicationXX ---- traditinal Application

Help!How can i draw an image that do not need to be displayed?

I want to draw an image and save it as an jpeg file.
first I have to draw all the elements in an image object.I write a class inherit from Class Component,I want to use the method CreateImage,but I get null everytime.And i cannot use the method getGraphics of this object.Thus i can not draw the image.
when i use an applet,it runs ok.I use panel and frame,and it fails.
How can i draw an image without using applet,because my programme will be used on the server.
Thank you.

you could try this to create the hidden image
try
          GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
          GraphicsDevice gs = ge.getDefaultScreenDevice();
          GraphicsConfiguration gc = gs.getDefaultConfiguration();
          offImage = gc.createCompatibleImage(100, 100);
          offG = offImage.getGraphics();
      catch(Exception e)
          System.out.println(e.getMessage());
      }

Draw circles,images in flex

How can we draw circles,images in flex? (ex as in
ms-paint)

http://livedocs.adobe.com/flex/3/html/help.html?content=Drawing_Vector_Graphics_1.html

Drawing an Image in a ScrollPane

In a Frame application I have to draw an image inside a ScrollPane.
Can you give me an example showing how this can be done ?
Thank you.

Sounds like you are using AWT. Go up to Swing (tutorial at http://java.sun.com/docs/books/tutorial/uiswing/ ) and paint on a custom JPanel which is the scroll pane's view port (you'll find the tutorial in the same place as the Swing one).
Stephen

How do I draw an image through a rectangle?

I have worked with c# in the past, and i remember being able to draw an image but drawing it within the bounds of the rectangle. I would do this so collision detection was easy. Any suggestions?
btw since im so very new to the language, i am even having trouble with g.drawImage stuff :(
any help would be amazing -_-

hollow wrote:
hmm ya i was messing around with that already, i guess im just retarded. i will keep looking thanks! ><No, you are not retarded. You are just incredibly impatient. Take a step back and ease yourself into the language. Take the time to read some articles while you're at it. I would also take a look at JavaFX2, it is a more modern approach to client application development and is less clunky than Java2D with a very active community. It might be that you are more comfortable with it.

How to draw an image at the center of a JscrollPane

I have an image that I want to be centered in my JScrollPane. When I zoom-in, I want the image to fill the entire jscrollpane. When I zoom out it returns to the original scale. My problem is, when I open the image, it appears at the upper left corner of the JScrollPane. I want it centered. Also, when I zoom-in, it gets larger than the scrollpane. That is it goes beyond the boundaries of the JScrollpane. The function I am using to draw the image is:
Image img = imp.getImage();
               if (img!=null)
                    g.drawImage(img,0,0, (int)(srcRect.width*magnification), (int)(srcRect.height*magnification),
                    srcRect.x, srcRect.y, srcRect.x+srcRect.width, srcRect.y+srcRect.height, null);If I change the initial x,y values from (0,0) to any other value, it grays the upper left corner. So forinstance, if I did the following, the upper left corner of the scrollpane would become gray.
g.drawImage(img,100,200, (int)(srcRect.width*magnification), (int)(srcRect.height*magnification),
                    srcRect.x, srcRect.y, srcRect.x+srcRect.width, srcRect.y+srcRect.height,null);How can I center my image in the scrollpane?

When I zoom-in, I want the image to fill the entire jscrollpane. When I zoom out it returns to the original scaleSo why are you using a scroll pane? A scroll pane is used when its contents can potentially be larger than the scrollpane.
Although it wasn't originally designed for this purpose you can probably use my [Background Panel|http://www.camick.com/java/blog.html?name=background-panel]. It supports displaying an image at its actual size as well as scaled to fit the panel. So you should just be able to toggle the style as required.

Drawing static images in flash 8

Hello Community !
Does anyone here know what the steps and tools that are used
to draw static images in Flash 8? Once drawn I would like to import
them into Dreamweaver 8 nad Illustrator 8. Not to be used as a flah
movies of Jif or gif.
Any books you may know about and ofr videos would be great,
preferably "books" on the subject.
Thanks
ATj The Flow

Thanx Albee!
albee wrote:
> you need to define i explicitly:
>
>
>
> _root.createEmptyMovieClip("fundo",1);
> fundo.loadMovie("image3.jpg");
> var fotosArray:Array = ["image1.jpg", "image3.jpg",
"image7.jpg"];
> var i:Number = 0;
> function fotosRotativas() {
> i == 2 ? i = 0 : i++;
> loadMovie(fotosArray
, fundo);
> }
> setInterval(fotosRotativas,5000);
>

Load and draw an image

frist ... sorry for my english.
i'm loading an image with this code
          try {
               String imgStr1 = "img/Os1.jpg";
               String imgStr2 = "img/Os2.jpg";
               img1 = ImageIO.read(new File(imgStr1));
               img2 = ImageIO.read(new File(imgStr2));
          catch (IOException e) {
               JOptionPane.showMessageDialog(null, "No se pudo cargar las imagenes: " + e, "ALERT!!", JOptionPane.ERROR_MESSAGE);
but i don't know how to draw the image
please help me
thanks

Use ImageIcon on a JLabel.

How to draw an Image on a JPanel?

Hi all,
Can any one give code for drawing an image on a JPanel?
thanks,
amar

That's for the JLabel right? ... For a JPanel on a JFrame, you could do something like this:
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
import java.net.URL;
public class TestImagePaint extends JFrame {
private BjPanel bjp;
public TestImagePaint( String imageName )   throws IllegalArgumentException {
    if ( imageName == null || !( new File( imageName ).isFile() ) ) {
      throw new IllegalArgumentException( "\nIn TestImagePaint constuctor"
                                         +"\t IllegalArgumentException:" );
    bjp = new BjPanel( imageName );
    getContentPane().add( bjp );
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    pack();
    setBounds( 100, 100, 400, 300 );
    setVisible( true );
public static void main( String[] argv ) {
    new TestImagePaint( argv[0] );
public class BjPanel extends JPanel {
    private URL   url;
    private Image image;
    public BjPanel( String imageName ) {
      try {
        url   = BjPanel.class.getResource( imageName );
        image = Toolkit.getDefaultToolkit().getImage( url );
        repaint();
      catch( Exception e ) {
        System.out.println( "Can't get Image: "+imageName+"\n\t"+e );
        System.exit( -1 );
    public void paint(Graphics g) {
      g.drawImage( image, 0, 0, this );
}

How to draw an image on transparent JPanel?

I want to draw an image on the transparent JPanel. How to do it?
I do like this:
( In constructor )
setOpaque(false);
String imageName = "coral.jpg";
iimage_Bg = Toolkit.getDefaultToolkit().getImage(imageName);
( In paintComponent( Graphics g ) )
Graphics2D g2D = (Graphics2D) g;
g2D.drawImage( iimage_Bg, 0, 0, getWidth() , getHeight() , Color.white, null );
But it doesn't work. Please help me!
Thank you very much.
coral9527

Check the values that are returned from getWidth() and getHeight(). If they either are zero, then paintComponent(Graphics g) never gets called by the components paint(Graphics g) method. I cannot see the how this component has been added or displayed so can give no advice on how you can guarantee getting a valid size. If you have simply added it to a JFrame and called pack(), the size will be zero, as the panel does not contain any components (you would not have this problem if you were adding a JLabel with an ImageIcon for example). Try not packing the frame, and giving it a valid size.

Drawing an image on a JDialog?

Similar Messages

Maybe you are looking for