Discussion :

[yashiro]

Bonjour à tous,
Je suis en phase de finalisation d'une application java (Eclipse 3.2 + J2SE 1.5) de gestion de ressource. Dans cette application, j'affiche un emploi de temps sous forme de JTable relooké et j'y matérialise les tâches par des rectangle transparents au-dessus des cellules du JTable.¨Pour cela, je redéfinit la méthode paintComponent(Graphics g) du JTable et j'utilise à l'interieur un graphics2D pour la transparence

Code :

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public void paintComponent(Graphics g){
		super.paintComponents(g);
 
		int width = getWidth();
		int height = getHeight();
		Graphics2D g2d = (Graphics2D)g; // Ligne d'erreur
 
		Paint old = g2d.getPaint(); // Sauvegarde de l'anien mode de peinture
 
		// Création du gradient de peinture
		GradientPaint gp = new GradientPaint(0, 0, color, width, height, color.brighter().brighter());
		g2d.setPaint(gp);
		g2d.fillRect(0, 0, width, height);
 
		if(_ishour){
			g2d.setPaint(ShinColor.getDefaultOrange());
			g2d.setStroke(new BasicStroke(2));
			g2d.drawLine(0, 1, width, 1);
			g2d.drawLine(0, 0, 0, height);
		}
		else if(_isquart){
			g2d.setPaint(ShinColor.getDefaultOrange());
			g2d.setStroke(new BasicStroke(2));
			g2d.drawLine(0, height/2, width, height/2);
			g2d.drawLine(0, 0, 0, height);
		}
		else if(_ishalph){
			g2d.setPaint(ShinColor.getDefaultOrange());
			g2d.setStroke(new BasicStroke(2));
			g2d.drawLine(0, height, width, height);
			g2d.drawLine(0, 0, 0, height);
		}
		if(_hour != null){
			// Update des positions des composants
			_hour.setBounds(new Rectangle(0, 0, this.getWidth(), 4 * this.getHeight()/5));
		}
		// Restauration de l'ancien mode de peinture
		g2d.setPaint(old);
	}

Le problème maintenant est que je voudrais imprimer cet JTable avec le code

Code :

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Properties props = new Properties();
 
    props.put("awt.print.paperSize", "a4");
    props.put("awt.print.destination", "printer");
 
 
    PrintJob pJob = getToolkit().getPrintJob(this,
			  "Printing_Test", props);
    if (pJob != null)
      {
        Graphics pg = pJob.getGraphics();
        MonJTable.printAll(pg) 
        pg.dispose();
        pJob.end();
      }

et j'ai une exception

Code :

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java.lang.ClassCastException: sun.print.ProxyPrintGraphics
	at clientInterfacePackage.shinGoodies.ShinJTableHour.paintComponent(ShinJTableHour.java:75)
	at javax.swing.JComponent.printComponent(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.CellRendererPane.paintComponent(Unknown Source)
	at javax.swing.plaf.basic.BasicTableUI.paintCell(Unknown Source)
	at javax.swing.plaf.basic.BasicTableUI.paintCells(Unknown Source)
	at javax.swing.plaf.basic.BasicTableUI.paint(Unknown Source)
	at javax.swing.plaf.ComponentUI.update(Unknown Source)
	at javax.swing.JComponent.paintComponent(Unknown Source)
	at clientInterfacePackage.shinGoodies.ShinJTable.paintComponent(ShinJTable.java:302)
	at javax.swing.JComponent.printComponent(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.print(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.printChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JViewport.paint(Unknown Source)
	at javax.swing.JComponent.print(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.printChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.print(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.printChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.print(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.printChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.print(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.printChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.print(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.printChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.print(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.printChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JLayeredPane.paint(Unknown Source)
	at javax.swing.JComponent.print(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.printChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.print(Unknown Source)
	at java.awt.GraphicsCallback$PrintCallback.run(Unknown Source)
	at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)
	at sun.awt.SunGraphicsCallback.runComponents(Unknown Source)
	at java.awt.Container.print(Unknown Source)
	at sun.awt.windows.WComponentPeer.print(Unknown Source)
	at sun.awt.windows.WCanvasPeer.print(Unknown Source)
	at sun.awt.windows.WPanelPeer.print(Unknown Source)
	at java.awt.GraphicsCallback$PeerPrintCallback.run(Unknown Source)
	at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)
	at java.awt.Component.printAll(Unknown Source)
	at clientInterfacePackage.MainFrame.actionPerformed(MainFrame.java:660)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.AbstractButton.doClick(Unknown Source)
	at javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source)
	at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.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.Window.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.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)

qui se rapporte à la ligne dans laquelle je caste le graphics en graphics2D
Je ne sais pas quoi faire!