Cannot stop default arrow key actions - Solution?

[Joel Biddier <jb...@gmail.com>]

I seem to have "fixed" the problem. But I an not sure it is the best way to
do it...

I extended the JSVGCanvas and  orverrided the installKeyboardActions()
method.  In the installKeyboardActions() I commented out the key maps I did
not what.

Not sure if this is a good way to do this? I does work. Any suggestions of a
better way, please tell me.


Thanks.


Below is my code:

public class MyCanvas extends JSVGCanvas {

    public MyCanvas() {
        super();
    }

    public MyCanvas(SVGUserAgent ua, boolean eventsEnabled, boolean
selectableText) {
        super();
    }

    // Override the installKeyboardActions() Method in the implementation.
    @Override
    protected void installKeyboardActions() {

        InputMap inputMap = getInputMap(JComponent.WHEN_FOCUSED);
        KeyStroke key;

        // I comment out the four key Actions I don't want. (So I my
Interactor can use them exclusively.)
        /*
        key = KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, 0);
        inputMap.put(key, SCROLL_RIGHT_ACTION);

        key = KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, 0);
        inputMap.put(key, SCROLL_LEFT_ACTION);

        key = KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0);
        inputMap.put(key, SCROLL_UP_ACTION);

        key = KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0);
        inputMap.put(key, SCROLL_DOWN_ACTION);
         */

        key = KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT,
KeyEvent.SHIFT_MASK);
        inputMap.put(key, FAST_SCROLL_RIGHT_ACTION);

        key = KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, KeyEvent.SHIFT_MASK);
        inputMap.put(key, FAST_SCROLL_LEFT_ACTION);

        key = KeyStroke.getKeyStroke(KeyEvent.VK_UP, KeyEvent.SHIFT_MASK);
        inputMap.put(key, FAST_SCROLL_UP_ACTION);

        key = KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, KeyEvent.SHIFT_MASK);
        inputMap.put(key, FAST_SCROLL_DOWN_ACTION);

        key = KeyStroke.getKeyStroke(KeyEvent.VK_I, KeyEvent.CTRL_MASK);
        inputMap.put(key, ZOOM_IN_ACTION);

        key = KeyStroke.getKeyStroke(KeyEvent.VK_O, KeyEvent.CTRL_MASK);
        inputMap.put(key, ZOOM_OUT_ACTION);

        key = KeyStroke.getKeyStroke(KeyEvent.VK_T, KeyEvent.CTRL_MASK);
        inputMap.put(key, RESET_TRANSFORM_ACTION);
    }
}

Re: Cannot stop default arrow key actions - Solution?

[Helder Magalhães <he...@gmail.com>]

Hi Joel,


Please reply to previous thread messages (in this case, [1]) in order
to avoid creating multiple thread about the same subject: it eases a
bit searching and browsing through the mailing list, etc.. ;-)


> I seem to have "fixed" the problem. But I an not sure it is the best way to
> do it...
>
> I extended the JSVGCanvas and  orverrided the installKeyboardActions()
> method.  In the installKeyboardActions() I commented out the key maps I did
> not what.
>
> Not sure if this is a good way to do this? I does work. Any suggestions of a
> better way, please tell me.

I believe there's currently no way of doing it differently. I've
reported bug 49762 [2] so that it doesn't get lost. Please comment
and/or add yourself to the CC list if you want to get notified of
changes. As always, patches are welcome so consider contributing one!
;-)


> Below is my code:
[...]
>         // I comment out the four key Actions I don't want. (So I my
> Interactor can use them exclusively.)
>         /*
>         key = KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, 0);
>         inputMap.put(key, SCROLL_RIGHT_ACTION);
>
>         key = KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, 0);
>         inputMap.put(key, SCROLL_LEFT_ACTION);
>
>         key = KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0);
>         inputMap.put(key, SCROLL_UP_ACTION);
>
>         key = KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0);
>         inputMap.put(key, SCROLL_DOWN_ACTION);
>          */
>
>         key = KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT,
> KeyEvent.SHIFT_MASK);
>         inputMap.put(key, FAST_SCROLL_RIGHT_ACTION);
>
>         key = KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, KeyEvent.SHIFT_MASK);
>         inputMap.put(key, FAST_SCROLL_LEFT_ACTION);
>
>         key = KeyStroke.getKeyStroke(KeyEvent.VK_UP, KeyEvent.SHIFT_MASK);
>         inputMap.put(key, FAST_SCROLL_UP_ACTION);
>
>         key = KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, KeyEvent.SHIFT_MASK);
>         inputMap.put(key, FAST_SCROLL_DOWN_ACTION);

Maybe you want to disable these as well? (Shift+cursor keys.) ;-)


Cheers,
 Helder


[1] http://mail-archives.apache.org/mod_mbox/xmlgraphics-batik-users/201008.mbox/%3CAANLkTi=p=KDCL3VR1SEXhrJDxw+aHM4gu1AeBamtd7dy@mail.gmail.com%3E
[2] https://issues.apache.org/bugzilla/show_bug.cgi?id=49762

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