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    <p><strong>Short Answer</strong></p> <p>You can simple use an <code>Scatter</code>. It includes dragging, rotation and scaling functionality and you can deactivate any or all of them:</p> <pre><code>my_scatter = Scatter(do_rotation=False, do_scale=False) </code></pre> <p>None of the problems you described should happen inside a <code>Scatter</code></p> <p><strong>Long Answer</strong></p> <p>Your problem is that you are overriding the <code>on_touch_down</code>, <code>on_touch_move</code> and <code>on_touch_up</code> of the parent. </p> <p>Normally these methods will call the corresponding ones of the children. For example, when the <code>on_touch_down</code> method of a <code>Widget</code> instance is called, then the <code>Widget</code> instance is going to traverse its children, calling the <code>on_touch_down</code> method of each of then (If you are familiarized with recursion and tree structures, we are talking about a recursive traverse method - I think pre-order - <a href="http://en.wikipedia.org/wiki/Tree_traversal">Tree traversal</a>). </p> <p>This functionality is overridden in the DraggableObject class. <strong>You got to be sure to call the method of be base class with:</strong></p> <p>super(DraggableWidget, self).on_touch_down(touch)</p> <p>Depending on what is the behaviour you are looking for the methods could look like:</p> <p>(1) If you always want to call the children:</p> <pre><code>def on_touch_down( self, touch ): if self.collide_point( *touch.pos ): touch.grab( self ) return super(DraggableWidget, self).on_touch_down(touch) </code></pre> <p>(2) If you just want to call the children when there is no collide:</p> <pre><code>def on_touch_down( self, touch ): if self.collide_point( *touch.pos ): touch.grab( self ) return True # Don't call the on_touch_down of the Base Class return super(DraggableWidget, self).on_touch_down(touch) </code></pre> <p>And there is more options!. The return value indicates if the event was or not handled by any children. You can, for example, do something like this:</p> <pre><code>def on_touch_down( self, touch ): handled = super(DraggableWidget, self).on_touch_down(touch) if not handled and self.collide_point( *touch.pos ): touch.grab( self ) return True return handled </code></pre> <p>In this case, you will avoid the Widget to be dragged when one of the children handle the event. It all depends on what you do.</p>
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    1. CO+1 nice answer.
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    2. COLucidly explained, thank you!
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