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POProgramming a GUI with resizable components using Java.swing
 

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  1. POProgramming a GUI with resizable components using Java.swing
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    <p>I'm supposed to program a GUI. Every component in this GUI has to have the possibility to be resized dynamically. </p> <p>So far I worked with GlassPane and ContentPane, added a JPanel and on it a button. When clicking the GlassPane gets the event, analyses the underlying component, creates a new handle for this special component and handles it over to the said component. I added a button that should change its size automatically. Works like I wanted it to work. BUT: When I change the size of the frame and click on the button now, nothing happens. The GlassPane is able to identify the button, but something seems to be wrong...</p> <p>Here's the code for the interception of GlassPane and giving the event to the component:</p> <pre><code>private void resendEvent(MouseEvent e) { //Point p = SwingUtilities.convertPoint(content.getGlassPane(), e.getPoint(), content.getContentPane()); Point p = e.getPoint(); Component component = SwingUtilities.getDeepestComponentAt(content.getContentPane(), p.x, p.y); System.out.println(component.toString()); Point p2 = component.getLocation(); MouseEvent event = new MouseEvent(component, e.getID(), e.getWhen(), e.getModifiers(), p2.x, p2.y, e.getClickCount(), e.isPopupTrigger()); //following lines have the same effects Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(event); //component.dispatchEvent(event); } </code></pre> <p>Thanks for your help/suggestions</p> <hr> <p>Okay, here's some more Code:</p> <pre><code>import java.awt.*; import java.awt.event.*; import javax.swing.*; import resize.ResizablePanel; public class ExampleProblem extends JFrame { public ExampleProblem () { JPanel glassPane = new JPanel(); glassPane.setOpaque(false); glassPane.addMouseListener(new MouseAdapter(){ @Override public void mousePressed(MouseEvent e) { resendEvent(e); } @Override public void mouseReleased(MouseEvent e) { resendEvent(e); } }); this.setGlassPane(glassPane); glassPane.setVisible(true); JButton b = new JButton("Test"); b.addActionListener(new ActionListener(){ @Override public void actionPerformed(ActionEvent arg0) { System.out.println("Button clicked"); }}); JPanel p = new JPanel(); p.add(b); setContentPane(p); pack(); setVisible(true); } private void resendEvent(MouseEvent e) {//Point p = SwingUtilities.convertPoint(content.getGlassPane(), e.getPoint(), content.getContentPane()); Point p = e.getPoint(); Component component = SwingUtilities.getDeepestComponentAt(this.getContentPane(), p.x, p.y); System.out.println(component.toString()); Point p2 = component.getLocation(); MouseEvent event = new MouseEvent(component, e.getID(), e.getWhen(), e.getModifiers(), p2.x, p2.y, e.getClickCount(), e.isPopupTrigger()); Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(event); } public static void main(String[] args) { new ExampleProblem(); } } </code></pre> <p>Hope, the problem is a bit clearer now. Is it possible, that I shouldn't have used setContentPane()? But we had to overwrite the JContentPane for resizing the components on it...</p>
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