actionPerformed() for button hold down

Question

Right now I have:

panel.getZoomButton().addActionListener(new ActionListener()
{
    @Override
    public void actionPerformed(ACtionEvent e)
    {
        zoom();
    }
}

This is called every time the zoom button is pressed. How can I change it so that zoom() will be continuously called if the zoom button is being held down?

score 4 · Accepted Answer · edited May 23 '17 at 11:49

4

You will need to use a MouseListener and override the mousePressed() method. There you can use a Timer or something similar to measure the time, the button has been pressed, in order to calculate your zoom.

Perhaps this question helps you with that: Java MouseEvent, check if pressed down

edited May 23 '17 at 11:49

Community

1
1

answered Feb 26 '13 at 16:13

htz

1,037
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I agree with you. You override mousePressed() and you manage your process at the end via mouseReleased(), when you release the mouse button. Take note of windows super button, if you click it while zooming you'll lose focus and your code will procede without control. Adding a simple condition via a keylistener do the job. – neo Feb 26 '13 at 16:20

score 2 · Answer 2 · answered Feb 26 '13 at 16:24

use Swing Action (most scallable abstraction) instead of ActionListener, there you can to set isEnabled, to switch to false value until all events are done
or add Swing Timer for reset Boolean to true value
there is possible to setMultiClickThreshhold(long threshhold), but is aplicable only for MouseEvents, this methods doesn't react to KeyBindings (ENTER and TAB) firing from Keyboard

actionPerformed() for button hold down

2 Answers2