Thanks for the error message and stack dump.
The error message indicates that you are calling getImage() from
an AWT callback, which is illegal. Please put the call in a new
Thread. You can see and example in visad/ss/FancySSCell.java, in
the captureDialog() method. This makes a new Thread (Runnable)
that calls BasicSSCell.captureImage(), which in turn calls
getImage().
Good luck,
Bill
On Thu, 20 May 2004, Wong Ka Yan Ivy [PG] wrote:
> Hi,
>
>
> > > How to save the display as a jpeg image?
> > >
> > > I've tried to use getImage() of DisplayImpl, but I fail to get the
> > > bufferedImage from it, It got a visad.VisADError. Thanks.
> >
> > Please send the whole text of the VisADError message. Or even
> > better, run under jdb, catch the VisADError, and send us a stack
> > dump (the output of 'where').
>
> The error as follows:
> //-------------------------------------------------------------------------
> visad.VisADError: cannot call getImage() from Thread: AWT-EventQueue-0
> at visad.DisplayImpl.getImage(DisplayImpl.java:2622)
> at weathersys.ui.ContourDisplayFrame.visualize(Unknown Source)
> at weathersys.ui.UserInterface.contour(Unknown Source)
> at weathersys.ui.UserInterface$1.displayMenuClicked(Unknown Source)
> at weathersys.ui.MenuBar.fireMenuClicked(Unknown Source)
> at weathersys.ui.MenuBar$7.actionPerformed(Unknown Source)
> at
> javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:17
> 86)
> at
> javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Abstra
> ctButton.java:1839)
> at
> javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel
> .java:420)
> at
> javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258
> )
> at javax.swing.AbstractButton.doClick(AbstractButton.java:289)
> at
> javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1
> 113)
> at
> javax.swing.plaf.basic.BasicMenuItemUI$MouseInputHandler.mouseRelease
> d(BasicMenuItemUI.java:943)
> at java.awt.Component.processMouseEvent(Component.java:5100)
> at java.awt.Component.processEvent(Component.java:4897)
> at java.awt.Container.processEvent(Container.java:1569)
> at java.awt.Component.dispatchEventImpl(Component.java:3615)
> at java.awt.Container.dispatchEventImpl(Container.java:1627)
> at java.awt.Component.dispatchEvent(Component.java:3477)
> at
> java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483
> )
> at
> java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
> at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
> at java.awt.Container.dispatchEventImpl(Container.java:1613)
> at java.awt.Window.dispatchEventImpl(Window.java:1606)
> at java.awt.Component.dispatchEvent(Component.java:3477)
> at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
> at
> java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchTh
> read.java:201)
> at
> java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
> ad.java:151)
> at
> java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
>
> at
> java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
>
> at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
>
> //-------------------------------------------------------------------------
>
> I've also try to add a line of code at one of the example of VisAD:
> Test60.java
> in the function: void setupServerData(LocalDisplay[] dpys);
>
> I've added a line at:
> // codes .....
> DataReferenceImpl ref_imaget1 = new DataReferenceImpl("ref_imaget1");
> ref_imaget1.setData(imaget1);
> dpys[0].addReference(ref_imaget1, null);
>
> // newly added:
> BufferedImage bImage = dpys[0].getImage();
>
> The program hangs during execution...
>
> Any idea? Or any other methods to save the display as a jpeg or other
> image file format? Thanks.
>
> Regards,
> Ivy
>
