/// <summary> Called when the user moves the mouse over the hyperbolic tree.
/// Used to signal the tree translation when the left button has been pressed over a node.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void MouseMoveHandler(object sender, MouseEventArgs e)
{
ScreenVector __p = this.GetPosition(sender, e);
if (__p != null)
{
if (sender is Renderer)
{
Renderer __htDraw = ((Renderer)sender);
__htDraw.ForEachNode(__p,
delegate(NodeView node) { node.RenderIsMouseOver = true; },
delegate(NodeView node) { node.RenderIsMouseOver = false; }
);
if (_statusButtonDown == true)
{
if (_startPoint.IsValid)
{
_endPoint.ProjectionStoE(__p.X, __p.Y, _model.SOrigin, _model.SMax);
if (_endPoint.IsValid)
{
__htDraw.Translate(_startPoint, _endPoint);
}
}
}
}
}
}
/// <summary> Called when a user pressed the mouse button on the hyperbolic tree.
/// Used to get the starting point of the drag.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void MouseDownHandler(object sender, MouseButtonEventArgs e)
{
if (e.OriginalSource is System.Windows.Controls.TextBlock)
{
ScreenVector __p = GetPosition(sender, e);
if (__p != null)
{
if (sender is Renderer)
{
Renderer __htDraw = ((Renderer)sender);
NodeView __node = __htDraw.FindNode(__p);
if (__node != null)
{
__node.RenderIsPressed = true;
}
else
{
foreach (NodeView __n in __htDraw.Children)
{
__n.RenderIsPressed = false;
}
}
}
_startPoint.ProjectionStoE(__p.X, __p.Y, _model.SOrigin, _model.SMax);
_clickPoint.X = __p.X;
_clickPoint.Y = __p.Y;
if (e.ClickCount > 1)
{
_statusButtonDown = false;
MouseClicked(sender, e);
}
else
{
_statusButtonDown = true;
}
}
}
}