Pan chart with two finger touch

Hi Erika,

Unfortunately we don’t support such behavior out of the box, but you can implement it by creating custom RolloverModifier and ZoomPanMovifiers which won’t interrupt each other:

class CustomRolloverModifier extends RolloverModifier {
    @Override
    public void onTouch(ModifierTouchEventArgs args) {
        final int pointerCount = args.e.getPointerCount();
        if(pointerCount == 1)
            super.onTouch(args);
        else if(pointerCount == 2) // remove rollover if 2 fingers
            clearAll();
    }
}

class CustomZoomPanModifier extends ZoomPanModifier {
    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float xDelta, float yDelta) {
        if(e2.getPointerCount() == 2) // process scroll only if there were two fingers
            return super.onScroll(e1, e2, xDelta, yDelta);

        return false;
    }

    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
        if(e2.getPointerCount() == 2) // process fling only if there were two fingers
            return super.onFling(e1, e2, velocityX, velocityY); 

        return false;
    }
}

Then add them into chart:

final ZoomPanModifier zoomPanModifier = new CustomZoomPanModifier();
zoomPanModifier.setReceiveHandledEvents(true);

final RolloverModifier rolloverModifier = new CustomRolloverModifier();

Collections.addAll(surface.getChartModifiers(),  sciChartBuilder.newModifierGroup().withModifier(rolloverModifier).withModifier(zoomPanModifier).build());

Is this suitable for your needs?

Best regards,
Yura