/**
* callback method for onTouch events
*
* @param pointinfo info about the touch event
* @return
* <p><b>true</b> if the touch event is handled by this event<br>
* <b>false</b> if this touch event is not for this element
* <p>This is intended, that a subobject can check, if it should handle a click or so, or if
* the event should be sent to the underlying object.
*/
public boolean onTouch(PointInfo pointinfo) {
boolean handleEvent = false;
// first ask our subobjects to handle it, otherwise let us handle it
for (int i = subDrawables.size() - 1; i >= 0 && !handleEvent; i--) {
MultiTouchDrawable sub = subDrawables.get(i);
if (sub.containsPoint(pointinfo.getX(), pointinfo.getY())) {
handleEvent = sub.onTouch(pointinfo);
}
}
// Logger.d("touch action: "+this.getClass().getSimpleName()+" " +
// pointinfo.getAction()+
// " 0x"+Integer.toHexString(pointinfo.getAction()));
// it's hard to find MOTION_UP events, because if the finger does not
// stay exactly on the correct position,
// this will change to dragging and we wont't get the drag end as
// MOTION_UP
if (!handleEvent
&& pointinfo.isMultiTouch() == false
&& pointinfo.getNumTouchPoints() == 1
&& pointinfo.getAction() == MotionEvent.ACTION_DOWN) {
handleEvent = this.onSingleTouch(pointinfo);
}
return handleEvent;
}
public MultiTouchDrawable getDraggableObjectAtPoint(PointInfo pt) {
float x = pt.getX(), y = pt.getY();
int n = subDrawables.size();
for (int i = n - 1; i >= 0; i--) {
MultiTouchDrawable im = subDrawables.get(i);
if (im.isDragable() && im.containsPoint(x, y)) {
return im.getDraggableObjectAtPoint(pt);
}
}
if (this.containsPoint(pt.getX(), pt.getY())) {
return this;
}
return null;
}
/** Return whether or not the given screen coords are inside this image */
public boolean containsPoint(float scrnX, float scrnY) {
// If this is a subdrawable, then don't let the controller think this is
// the item to be dragged. Otherwise non-draggable subdrawables will not
// allow to drag the superdrawable when the user's finger is exactly on
// them. FIXME: Is this the right place to do this?
// if (this.hasSuperDrawable())
// return false;
// else
// FIXME: need to correctly account for image rotation
boolean inside = (scrnX >= minX && scrnX <= maxX && scrnY >= minY && scrnY <= maxY);
if (inside) return true;
Iterator<MultiTouchDrawable> it = this.subDrawables.iterator();
while (it.hasNext()) {
MultiTouchDrawable sub = it.next();
if (sub.containsPoint(scrnX, scrnY)) {
return true;
}
}
return false;
}
