Draw image between edges in another image

HI
i try to draw an image between a specified edges in another image
can any one help me and provide me with a code that perform this task

elsabry wrote:
HI
i try to draw an image between a specified edges in another imageHow are the 'edges' specified? It is easy to draw one image, then another over the top that has areas of transparency.
can any one help me and provide me with a code that perform this taskWhat have you got so far? Note that these forums are not a 'code generation machine'.
BTW - To help your reader, please put a single upper case letter at the start of every sentence, and a full-stop (or question mark, or exclamation mark) at the end. This helps the reader to quickly scan the text, looking for ways to help. You would not want to make it harder to help, would you?

Similar Messages

Problems drawing images form another class

Ok as the title says I'm having trouble drawing images from a different class. I have a class that represents a plane and it has a draw' method that draws its .gif image.
public void draw (Graphics g)
g.drawImage(planepic , xPos, yPos, null)
then in my main class in the paint method i have
plane.draw(g);
I think my problem is the null for my image observer. I tried using null as my image observer and i got a error saying i can't make a static reference to a non static method.
I've done some research because i never really understood static but i still don't quite get it.
Also when I use this as my image observer i get a error in my plane object.
I also just tried passing and making a object for my main class and i still got the static error.
Any help is appreciated and thanks in advance

Ok as the title says I'm having trouble drawing
images from a different class. I have a class that
represents a plane and it has a draw' method that
draws its .gif image.
public void draw (Graphics g)
g.drawImage(planepic , xPos, yPos, null)
in my main class in the paint method i have
plane.draw(g);
I think my problem is the null for my image observer.
I tried using null as my image observer and i got a
error saying i can't make a static reference to a non
static method. Use a minimal implementation of the ImageObserver to be sure.
public class Plane implements ImageObserver
public boolean imageUpdate(
Image img,int infoFlags,int x,int y,int width,int height)
   switch(infoFlags)
      case ALLBITS:
                return false;
      case SOMEBITS:
                return true;
      default:
            return true;
I've done some research because i never really
understood static but i still don't quite get it.
Also when I use this as my image observer i get a
error in my plane object.
I also just tried passing and making a object for my
main class and i still got the static error.
Any help is appreciated and thanks in advanceWhen you call draw(g) from your other class you hand it a Graphics context that you instantiated somewhere else ie: in another class. Without a more complete example it is really impossible to determine your issue for sure,
but if I was to guess I would say you need to make sure that the Graphics context handed to the draw(Graphics) method was instantiated from a Component that was already visible. ie: Do a f
Frame.createImage() from your parent frame after iyou have already called setVisible(true); In other words I suspect you are making and Image from some other Component that is not yet visible. That however is a guess so if not the issue post the rest of the code or at least a minimal implementation that demonstrates this.
About static:
static means the class/variable is the same throughout ALL classes of that type and if changed in one instance it will change and thus be the same for all instances.
You CAN call static by referencing the base class Object without having to instantiate.
ie:given
public class SomeClass
static String name;
static String getName
   if(name == null)
      name = "DefaultName";
   return name;
}Thus you could call..
String name = SomeClass.getName();As opposed to
SomeClass myClass = new SomeClass();
      myClass.getName();This can get you in trouble if you try to make a method that is static
that then tries to reference non static variables.
ie:
public class SomeClass
int x;
static String name;
SomeClass()
   x=0;
static String getName
   if(name == null)
      name = "DefaultName";
   x++;
   return name;
}In this case SomeClass.getName(); will throw and exception because it is trying to access[b] x from a static context .
Hope that clears that up for you; if not post a more complete example.
Good Luck!
(T)

Drawing image so that it appears on top of another

Alright, this question isn't as straight forward as it may seem. Yes, I want to draw an image so that it appears on top of another drawn image, but the image I am trying to draw is being drawn in another thread like so:
public class myApplet extends Applet implements Runnable
public Graphics g;
public Thread myThread;
public void init()
    myThread = new Thread(this);
    myThread.start();
public void paint()
     super.paint(g);
     //Assume that I loaded in the images properly
     g.drawImage(image1, 0, 0, null); //Assume image1 is a 50 px X 50 px image
public void run()
     g.drawImage(image2, 0, 0, null); //Assume image2 is a 20 px X 20 px image
}This also happens if I try to do "g.fillRect();". The 50 X 50 image appears on top of the 20 x 20 image. Does anyone know a way that I can tell the program to draw the image in the thread AFTER the image in the paint method (I know I should be using paintComponent, but this is a sample program. Please don't get too picky about it. I typed it up simply for this post and I wanted to make it simple).
The reason I'm drawing it in the paint method is because I am making an image move along a set of points. The points are formulated inside the run() method. If I draw it inside of the paint() method it skips points.
Any help would be GREAT. Thank you.
Edited by: dustty1818 on Apr 11, 2009 9:05 AM

dustty1818 wrote:
public class myApplet extends Applet implements Runnable
public Graphics g;
public void run()
g.drawImage(image2, 0, 0, null); //Assume image2 is a 20 px X 20 px image
}Edited by: dustty1818 on Apr 11, 2009 9:05 AMDusty,
There are several serious (fatal) flaws with your design. The biggest is that you should NEVER hold
on to a Graphics object. If anything you should be calling dispose at the end of the paint method.
It appears that you are accidentally trying to use a technique called "active rendering".
You can do active rendering in Java but it would look nothing like what you are doing (and is much
more advanced). You must resolve to keep all drawing in (or preferably called from) the paint method.
Have your run() method call repaint() and have your paint() method have all the information it
needs to render the scene.
Also, and this is comparatively minor, extend JApplet.
example:
import java.awt.*;
import javax.swing.*;
public class SceneRenderer extends JApplet implements Runnable{
     Point pt1 = new Point(0, 0);
     Point pt2 = new Point(0, 0);
     public void init(){
          Thread animationThread = new Thread(this);
          animationThread.start();
     public void paint(Graphics g){
          super.paint(g);
          g.setColor(Color.RED);
          g.fillRect(pt1.x, pt1.y, 50, 50);
          g.setColor(Color.BLUE);
          g.fillRect(pt2.x, pt2.y, 20, 20);
     public void run(){
          while(true){
               pt1.x += 1;
               pt2.x += 1;
               repaint();
               try{
                    Thread.sleep(60);
               } catch(Exception e){}
}

Drawing Images. Making them Durable?

Im trying to create an application that draws images to the screen. So for example, it draws an image (call it image x) where the user left clicks the mouse. It draws fine. Then when the user clicks at a new spot, the first image x is erased when the next is placed on the screen. This isn't what I want, I want all previous images from clicking to say. From searching, it seems my problem is that drawn images are not durable. Other forum posts didn't help me understand the solution to the problem so any help would be wonderful.
Edited by: goyanks135 on May 12, 2009 6:13 PM

Thanks for the quick reply, that seems to work best for this application. Another thing, is there any way to generate a BufferedImage that represents the panel? Currently I am using:
<BufferedImage> = robot.createScreenCapture(<Rectangle>);
to do so, but would not depending on where the window is on the screen. I couldn't figure out how to determine the windows location. Is there a method to create the BufferedImage or obtain the window's coordinates?
edit: I was looking at the getLocation() and getSize() methods of the component class. Seems like they should work if I use
<BufferedImage> = robot.createScreenCapture(new Rectangle (getLocation(), getSize());
I'm going to bed right now and didn't get it to work. Seems like it should.
Edited by: goyanks135 on May 12, 2009 7:01 PM

How can I draw image in a vbean?

How can I draw image in a vbean?
this is my code :
import java.awt.BorderLayout;
import java.awt.Image;
import java.awt.Graphics;
import java.net.MalformedURLException;
import java.net.URL;
import com.sun.jimi.core.Jimi;
import oracle.forms.handler.IHandler;
import oracle.forms.properties.ID;
import oracle.forms.ui.VBean;
public class PrintEmailLogo extends VBean {
     URL url;
     Image img;
     boolean ImageLoaded = false;
     public void paint(Graphics g) {
          if (ImageLoaded) {
               System.out.println("yes~~~");
               g.drawImage(img, 0, 0, null);
          } else
               System.out.println("no~~~");
     public boolean imageUpdate(Image img, int infoflags, int x, int y, int w,
               int h) {
          if (infoflags == ALLBITS) {
               System.out.println("yes");
               ImageLoaded = true;
               repaint();
               return false;
          } else
               return true;
     public void init(IHandler arg0) {
          super.init(arg0);
          try {
               url = new URL("file:print/77G.gif");
               img = Jimi.getImage(url);
               Image offScreenImage = createImage(size().width, size().height);
               Graphics offScreenGC = offScreenImage.getGraphics();
               System.out.println(offScreenGC.drawImage(img, 0, 0, this));
          } catch (MalformedURLException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
but when I run it in forms
when it run Graphics offScreenGC = offScreenImage.getGraphics();
It throw a exception:
java.lang.NullPointerException     at com.avicit.aepcs.calendar.PrintEmailLogo.init(PrintEmailLogo.java:72)     at oracle.forms.handler.UICommon.instantiate(Unknown Source)     at oracle.forms.handler.UICommon.onCreate(Unknown Source)     at oracle.forms.handler.JavaContainer.onCreate(Unknown Source)     at oracle.forms.engine.Runform.onCreateHandler(Unknown Source)     at oracle.forms.engine.Runform.processMessage(Unknown Source)     at oracle.forms.engine.Runform.processSet(Unknown Source)     at oracle.forms.engine.Runform.onMessageReal(Unknown Source)     at oracle.forms.engine.Runform.onMessage(Unknown Source)     at oracle.forms.engine.Runform.processEventEnd(Unknown Source)     at oracle.ewt.lwAWT.LWComponent.redispatchEvent(Unknown Source)     at oracle.ewt.lwAWT.LWComponent.processEvent(Unknown Source)     at java.awt.Component.dispatchEventImpl(Unknown Source)     at java.awt.Container.dispatchEventImpl(Unknown Source)     at java.awt.Component.dispatchEvent(Unknown Source)     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)     at java.awt.Container.dispatchEventImpl(Unknown Source)     at java.awt.Component.dispatchEvent(Unknown Source)     at java.awt.EventQueue.dispatchEvent(Unknown Source)     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)     at java.awt.EventDispatchThread.run(Unknown Source)
I change it to:
import java.awt.BorderLayout;
import java.awt.Image;
import java.awt.Graphics;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.JFrame;
import com.sun.jimi.core.Jimi;
import oracle.forms.handler.IHandler;
import oracle.forms.properties.ID;
import oracle.forms.ui.VBean;
public class PrintEmailLogo extends VBean {
     URL url;
     Image img;
     public void paint(Graphics g) {
          try {
               url = new URL("file:print/77G.gif");
               img = Jimi.getImage(url);
               g.drawImage(img, 0, 0, this));
          } catch (MalformedURLException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
     public void init(IHandler arg0) {
          super.init(arg0);
But it display nothing.
It isn't paint continuous.
what's wrong in my vbean?
please help me.

The following code works fine for me:
package oracle.forms.fd;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import oracle.forms.handler.IHandler;
import oracle.forms.properties.ID;
import oracle.forms.ui.CustomEvent;
import oracle.forms.ui.VBean;
public class test extends VBean {
private URL url;
private URL m_codeBase;
private Image img;
public void paint(Graphics g) {
// draw the image
g.drawImage(img, 0, 0, this);
public void init(IHandler arg0) {
   super.init(arg0);
   // load image file
   img = loadImage("file:///c:/coyote.jpg");
public test()
    super();
   * Load an image from JAR file, Client machine or Internet URL *
private Image loadImage(String imageName)
    URL imageURL = null;
    boolean loadSuccess = false;
    Image img = null ;
    //JAR
    imageURL = getClass().getResource(imageName);
    if (imageURL != null)
      try
        img = Toolkit.getDefaultToolkit().getImage(imageURL);
        loadSuccess = true;
        return img ;
      catch (Exception ilex)
        System.out.println("Error loading image from JAR: " + ilex.toString());
    else
      System.out.println("Unable to find " + imageName + " in JAR");
    //DOCBASE
    if (loadSuccess == false)
      System.out.println("Searching docbase for " + imageName);
      try
        if (imageName.toLowerCase().startsWith("http://")||imageName.toLowerCase().startsWith("https://"))
          imageURL = new URL(imageName);
        else if(imageName.toLowerCase().startsWith("file:"))
          imageURL = new URL(imageName);
        else
          imageURL = new URL(m_codeBase.getProtocol() + "://" + m_codeBase.getHost() + ":" + m_codeBase.getPort() + imageName);
        System.out.println("Constructed URL: " + imageURL.toString());
        try
          img = createImage((java.awt.image.ImageProducer) imageURL.getContent());
          loadSuccess = true;
          System.out.println("Image found: " + imageURL.toString());
          return img ;
        catch (Exception ilex)
          System.out.println("Error reading image - " + ilex.toString());
      catch (java.net.MalformedURLException urlex)
        System.out.println("Error creating URL - " + urlex.toString());
    //CODEBASE
    if (loadSuccess == false)
      System.out.println("Searching codebase for " + imageName);
      try
        imageURL = new URL(m_codeBase, imageName);
        System.out.println("Constructed URL: " + imageURL.toString());
        try
          img = createImage((java.awt.image.ImageProducer) imageURL.getContent());
          loadSuccess = true;
          System.out.println("Image found: " + imageURL.toString());
          return img ;
        catch (Exception ilex)
                System.out.println("Error reading image - " + ilex.toString());
      catch (java.net.MalformedURLException urlex)
        System.out.println("Error creating URL - " + urlex.toString());
    if (loadSuccess == false)
      System.out.println("Error image " + imageName + " could not be located");
    return img ;
}Francois

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How draw image into frame in applet.Please give my simple example code.

http://search.java.sun.com/search/java/index.jsp?qt=%2Bdraw+%2Bimage+%2Bpanel+%2Bhow&nh=10&qp=&rf=1&since=&country=&language=&charset=&variant=&col=javaforums

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public void paint(Graphics g){
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Hi,
I have an application laid out as Figure 1 depicts.
JFrame
|
| JMenuBar
|-----------------------------------------
| ------------------JPanel - appPanel
| |--------------------------------|
| | ---|------------------ JPanel - displayPanel
| | | |
| |----------------|---------------|
| |-------------------------- JComponent - jcanvas
|
| |--------------------------------|
| | ----|----------------------- JPanel - controlPanel
| | |
| |--------------------------------|
|
|--------------------------------------------
Figure 1
The problem I am having is that:
theJPanel (appPanel) contains two JPanels (displayPanel and controlPanel) and I am adding a JComponent called JCanvas
to the displayPanel and I use it to draw images on it of type BufferedImage. Now, the image is displayed without any problem
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temporarily see the image but something is overwriting the image. I have set appPanel, displayPanel, controlPanel to opaque
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Of point maybe, if I access the JMenuBar the image will appear less what part of the menu bar obscures it.
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and it has it own paintComponent method to do the image rendering and is added to the displayPanel when instantiated.
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* SwingPaintDemo2.java
* Created on Sep 27, 2008, 10:57:22 AM
* Company:
* Copyright: Sep 27, 2008
* Version:
import javax.swing.SwingUtilities;
import javax.swing.JFrame;
import javax.swing.BorderFactory;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.JComponent;
* @author
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                createAndShowGUI();
    private static void createAndShowGUI() {
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            SwingUtilities.isEventDispatchThread());
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        f.setVisible(true);
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        return new Dimension(350, 350);
    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D) this.getGraphics();
        d = this.getPreferredSize();
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import java.awt.*;
import java.applet.*;
public class TestApplet extends Applet
     Image im;
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Message was edited by:
Guest42

// <applet code="TestApplet" width="300" height="400"></applet>
import java.awt.*;
import java.applet.*;
public class TestApplet extends Applet
     Image im;
    public void init()
        setSize(300, 400);
        im = getImage(getDocumentBase(), "Picture.GIF");
        loadImage();
    private void loadImage()
        MediaTracker tracker = new MediaTracker(this);
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        catch(InterruptedException ie)
            System.err.println("interrupt: " + ie.getMessage());
        int status = tracker.statusID(0, false);
        String results = "";
        if((status & MediaTracker.COMPLETE) == MediaTracker.COMPLETE)
            results += "COMPLETE";
        if((status & MediaTracker.ABORTED) == MediaTracker.ABORTED)
            results += "ABORTED";
        if((status & MediaTracker.ERRORED) == MediaTracker.ERRORED)
            results += "ERRORED";
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    public void start()
//        repaint();
    public void paint(Graphics g)
        g.drawImage(im, 10, 10, this);
        g.drawString("I can draw a string", 10, 10);
    public void stop()
    public void destroy()
}

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I wonder is there any approach can be used to draw a image in different dpi, such as 144dpi, in a JPanel?
'cause my image processed from other tools is not good, if I can draw image in a high dpi, then the image will looks much better, though the image becomes smaller.
Note: no SCALE!

I have a image which is 152dpi, then, how does the Widows draws this image? It looks much better than scale the 72dpi image to the same size.
Really puzzled-_-

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I am experimenting with using a color matrix to change images and have brightness, R, G, B changing but the alpha does not seem to do anything. I have a scrollbar for the alpha value in the matrix in the example. It seems it should change the image in some
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Imports System.Drawing.Imaging
Public Class Form3
Private rustybmp As New Bitmap("c:\bitmaps\rusty.jpg")
Private Sub Form3_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Me.DoubleBuffered = True
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VScrollBar1.Minimum = 0
VScrollBar1.Value = 50
End Sub
Private Sub Form3_Paint(sender As Object, e As PaintEventArgs) Handles Me.Paint
Dim cm As ColorMatrix = New ColorMatrix(New Single()() _
{New Single() {1, 0.0, 0.0, 0.0, 0.0}, _
New Single() {0.0, 1, 0.0, 0.0, 0.0}, _
New Single() {0.0, 0.0, 1, 0.0, 0.0}, _
New Single() {0.0, 0.0, 0.0, 1.0, 0.0}, _
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Dim image_attr As New ImageAttributes
image_attr.SetColorMatrix(cm)
e.Graphics.DrawImage(rustybmp, Me.ClientRectangle, 0, 0, rustybmp.Width, rustybmp.Height, GraphicsUnit.Pixel, image_attr)
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Me.Refresh()
End Sub
End Class

I didn't try this.
How to: Use a Color Matrix to Set Alpha Values in Images
La vida loca
Oh, ok, in your link example the alpha is the 4 row 4 col.
I was using the 5th row 4th col because I thought that was R, G, B A across the 5th row. Maybe that is for a solid brush or something.
This works as I expected that way. Still looking....
Dim cm As ColorMatrix = New ColorMatrix(New Single()() _
{New Single() {1, 0.0, 0.0, 0.0, 0.0}, _
New Single() {0.0, 1, 0.0, 0.0, 0.0}, _
New Single() {0.0, 0.0, 1, 0.0, 0.0}, _
New Single() {0.0, 0.0, 0.0, VScrollBar1.Value / 100, 0.0}, _
New Single() {0, 0, 0, 0, 1}})
Cool!
Now if you could just get that working with HoloLens..... :)
La vida loca

Draw image between edges in another image

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