/// <summary>
/// layout controls in OpenGL canvas.(
/// Updates absolute and relative (location and size) of specified node and its children nodes.
/// <para>This coordinate system is shown as below.</para>
/// <para> /\ y</para>
/// <para> |</para>
/// <para> |</para>
/// <para> |</para>
/// <para> |</para>
/// <para> |</para>
/// <para> |----------------->x</para>
/// <para>(0, 0)</para>
/// </summary>
/// <param name="node"></param>
public static void Layout(GLControl node)
{
if (node == null)
{
return;
}
var layoutEvent = node;
bool cancelTreeLayout = layoutEvent.DoBeforeLayout();
var parent = node.Parent;
if ((parent != null) && (!cancelTreeLayout))
{
NonRootNodeLayout(node, parent);
}
layoutEvent.DoAfterLayout();
node.UpdateAbsoluteLocation();
foreach (var item in node.Children)
{
GLControl.Layout(item);
}
if (parent != null)
{
node.parentLastWidth = parent.width;
node.parentLastHeight = parent.height;
}
}
