Customising interactors

[Eric Delacroix <ed...@hotmail.com>]

Hello,

I'm still trying to customize the zoom and pan functions of JSVGCanvas, by 
making them working on clicking their button. So when you press a button it 
enables the associated function and disables all the others. But I'd like to 
make it possible to do that just by clicking the left mouse-button. So I 
wrote a class that extends JSVGCanvas and tried to override the interactors 
(just erasing tha part between stars)

protected Interactor zoomInteractor = new AbstractZoomInteractor() {
        public boolean startInteraction(InputEvent ie) {
            int mods = ie.getModifiers();
            return
                ie.getID() == MouseEvent.MOUSE_PRESSED; /*&&
                (mods & ie.BUTTON1_MASK) != 0 &&
                (mods & ie.CTRL_MASK) != 0;*/
        }
    };

but when trying to use it, I still have to push the CTRL key to have the 
effect.
Is there other functions to override?
Thank you
Eric Delacroix
ULB Brussel




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RE: Customising interactors

[Thomas E Deweese <th...@kodak.com>]

>>>>> "ED" == Eric Delacroix <ed...@hotmail.com> writes:

ED> I'm still trying to customize the zoom and pan functions of
ED> JSVGCanvas, by making them working on clicking their button. So
ED> when you press a button it enables the associated function and
ED> disables all the others. But I'd like to make it possible to do
ED> that just by clicking the left mouse-button. So I wrote a class
ED> that extends JSVGCanvas and tried to override the interactors
ED> (just erasing tha part between stars)

ED> protected Interactor zoomInteractor = new AbstractZoomInteractor()
ED> { public boolean startInteraction(InputEvent ie) { int mods =
ED> ie.getModifiers(); return ie.getID() == MouseEvent.MOUSE_PRESSED;
ED> /*&& (mods & ie.BUTTON1_MASK) != 0 && (mods & ie.CTRL_MASK) !=
ED> 0;*/ } };

    If you just put the above code in a subclass it would do almost
nothing.  It would define a new class member zoomInterator, but you
probably wanted to replace the zoomInteractor defined by JSVGCanvas.

    In general what you want to do is write your own classes that
create a new Affine Matrix to set with 'setRenderingTransform'.
Capturing the user events and the creation of the affine transform are
all done using the standard JDK mechanisms.

ED> but when trying to use it, I still have to push the CTRL key to
ED> have the effect.  Is there other functions to override? 

    Probably because you never register your new zoom interactor.

 Thank you
ED> Eric Delacroix ULB Brussel




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