/// <summary>
/// Construct new AutoScroll object that will scroll the given target object within it's container
/// by attaching to the mouse events of the container.
/// </summary>
/// <param name="target">The target object to scroll</param>
/// <param name="zoom">The master MapZoom object that manages the actual render transform</param>
public AutoScroll(FrameworkElement target, MapZoom zoom)
{
_container = target.Parent as Panel;
_container.MouseDown += new MouseButtonEventHandler(OnMouseDown);
_container.MouseMove += new MouseEventHandler(OnMouseMove);
_container.MouseWheel += new MouseWheelEventHandler(OnMouseWheel);
Keyboard.AddKeyDownHandler(_container, new KeyEventHandler(OnKeyDown));
_zoom = zoom;
}
/// <summary>
/// Construct new RectangleSelectionGesture object for selecting things in the given target object.
/// </summary>
/// <param name="target">A FrameworkElement</param>
/// <param name="zoom">The MapZoom object that wraps this same target object</param>
public RectangleSelectionGesture(FrameworkElement target, MapZoom zoom)
{
_target = target;
_container = target.Parent as Panel;
if (_container == null)
{
throw new ArgumentException("Target object must live in a Panel");
}
_zoom = zoom;
_container.MouseLeftButtonDown += new MouseButtonEventHandler(OnMouseLeftButtonDown);
_container.MouseLeftButtonUp += new MouseButtonEventHandler(OnMouseLeftButtonUp);
_container.MouseMove += new MouseEventHandler(OnMouseMove);
}