private void toolStripButton3_Click(object sender, EventArgs e)
{
if (pan != null)
{
pCanvas1.RemoveInputEventListener(pan);
}
pCanvas1.PanEventHandler = null;
drag = new PDragEventHandler();
pCanvas1.AddInputEventListener(drag);
}
/// <summary>
/// Constructs a new PLens.
/// </summary>
public PLens()
{
dragBar = PPath.CreateRectangle(0, 0, 100, 100); // Drag bar gets resized to fit the available space, so any rectangle will do here
dragBar.Brush = DEFAULT_DRAGBAR_BRUSH;
dragBar.Pickable = false; // This forces drag events to percolate up to PLens object
AddChild(dragBar);
camera = new PCamera();
camera.Brush = DEFAULT_LENS_BRUSH;
AddChild(camera);
// Create an event handler to drag the lens around. Note that this event
// handler consumes events in case another conflicting event handler has been
// installed higher up in the heirarchy.
lensDragger = new LensDragHandler();
AddInputEventListener(lensDragger);
// When this PLens is dragged around adjust the camera's view transform.
TransformChanged += new PPropertyEventHandler(PLens_TransformChanged);
}
