/// <summary>
/// Installs the scroll director and adds the appropriate handlers.
/// </summary>
/// <param name="scrollableControl">
/// The scrollable control on which this director directs.
/// </param>
/// <param name="view">The PCanvas that the scrollable control scrolls.</param>
public virtual void Install(PScrollableControl scrollableControl, PCanvas view)
{
this.scrollableControl = scrollableControl;
this.view = view;
if (view != null)
{
this.camera = view.Camera;
this.root = view.Root;
}
if (camera != null)
{
camera.ViewTransformChanged += new PPropertyEventHandler(camera_ViewTransformChanged);
camera.BoundsChanged += new PPropertyEventHandler(camera_BoundsChanged);
camera.FullBoundsChanged += new PPropertyEventHandler(camera_FullBoundsChanged);
}
if (root != null)
{
root.BoundsChanged += new PPropertyEventHandler(root_BoundsChanged);
root.FullBoundsChanged += new PPropertyEventHandler(root_FullBoundsChanged);
}
if (scrollableControl != null)
{
scrollableControl.UpdateScrollbars();
}
}
/// <summary>
/// Uninstalls the scroll director from the scrollable control.
/// </summary>
public virtual void UnInstall()
{
scrollableControl = null;
view = null;
if (camera != null)
{
camera.ViewTransformChanged -= new PPropertyEventHandler(camera_ViewTransformChanged);
camera.BoundsChanged -= new PPropertyEventHandler(camera_BoundsChanged);
camera.FullBoundsChanged -= new PPropertyEventHandler(camera_FullBoundsChanged);
}
if (root != null)
{
root.BoundsChanged -= new PPropertyEventHandler(root_BoundsChanged);
root.FullBoundsChanged -= new PPropertyEventHandler(root_FullBoundsChanged);
}
camera = null;
root = null;
}