private void ChildButtonReleaseEvent(object sender, ButtonReleaseEventArgs args)
{
NodeViewChild child = GetChild((Widget)sender);
Debug.Assert(child != null);
if (args.Event.Button == 1) // GDK_BUTTON_PRIMARY
{
((Node)child.Child).UnblockExpander();
}
_action = NodeViewAction.None;
args.RetVal = false;
}
private void ChildButtonPressEventHandler(object sender, ButtonPressEventArgs args)
{
NodeViewChild child = GetChild((Widget)sender);
Debug.Assert(child != null);
if (args.Event.Button == 1) // GDK_BUTTON_PRIMARY
{
int x = (int)args.Event.X;
int y = (int)args.Event.Y;
bool inside = PointInRectangle(child.SouthEast, x, y);
_action = inside ? NodeViewAction.Resize : NodeViewAction.DragChild;
child.DragStart = new Point(x, y);
Rectangle childAlloc = child.Child.Allocation;
child.DragDelta = new Point(x - (childAlloc.X + childAlloc.Width), y - (childAlloc.Y + childAlloc.Height));
}
args.RetVal = false;
}
/// <summary>
/// Initializes a new instance of the <see cref="NodeViewEventArgs"/> class for the specified tree node and with
/// the specified type of action that raised the event.
/// </summary>
/// <param name="node">The <see cref="Node"/> that the event is responding to.</param>
/// <param name="action">The type of <see cref="NodeViewAction"/> that raised the event.</param>
public NodeViewEventArgs(Node node, NodeViewAction action)
{
Node = node;
Action = action;
}
private void NodeDragEndEventHandler(object sender, EventArgs args)
{
_action = NodeViewAction.None;
((Widget)sender).Parent.QueueDraw();
}
private void NodeDragBeginEventHandler(object sender, NodeSocketDragEventArgs args)
{
_action = NodeViewAction.DragConnection;
_x0 = args.X;
_y0 = args.Y;
}
// ---- CONSTRUCTORS & DESTRUCTOR ------------------------------------------------------------------------------
/// <summary>
/// Initializes a new instance of the <see cref="NodeViewCancelEventArgs"/> class with the specified tree node,
/// a value specifying whether the event is to be canceled, and the type of tree view action that raised the
/// event.
/// </summary>
/// <param name="node">The <see cref="Node"/> that the event is responding to.</param>
/// <param name="cancel"><c>true</c> to cancel the event; otherwise, <c>false</c>.</param>
/// <param name="action">One of the <see cref="NodeViewAction"/> values indicating the type of action that
/// raised the event.</param>
public NodeViewCancelEventArgs(Node node, bool cancel, NodeViewAction action)
: base(cancel)
{
Node = node;
Action = action;
}
