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javaswingdraggablejscrollpane

Draggable component that is larger than JFrame (JScrollPane with invisble scrollbars on each side)

I have created a draggable JComponent in Java Swing and want to display it bigger than the JFrame it contains is (it's supposed to be a game map, movable by drag&drop). As i found didn't find a way to display the component alone bigger than the frame, I tried to put it into a JScrollPane and remove the horizontal as well as the vertical scrollbar, but Eclipse says "invalid verticalScrollBarPolicy". Is there a workaround for that or - even better - a way to scale my Draggable JComponent to a size greater than the JFrame without having to add it to extra panels or components?

Thanks in advance!

Solution

  • I tried to put it into a JScrollPane and remove the horizontal as well as the vertical scrollbar, but Eclipse says "invalid verticalScrollBarPolicy".

    Make sure you use the proper variables:

    scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_NEVER);

    a way to scale my Draggable JComponent to a size greater than the JFrame

    Implement the getPreferredSize() method to return the appropriate size of your component.