onDragEnd method
Implementation
onDragEnd(DragEndDetails details)
{
print('on drag end ...');
if (!widget.model.draggable || widget.model.modal) return;
var viewport = MediaQuery.of(context).size;
bool minimize = (dx! + width! < 0) || (dx! > viewport.width) || (dy! + height! < 0) || (dy! > viewport.height);
if (minimize)
{
dx = originalDx;
dy = originalDy;
lastDx = originalDx;
lastDy = originalDy;
onMinimize();
}
}