// 鼠标按下
protected override void OnPointerPressed(PointerPressedEventArgs e)
{
base.OnPointerPressed(e);
// 获取当前拓扑图面板
TopoGraph_P_VM nowTGPVM = (TopoGraph_P_VM)ResourceManager.mainWindowVM.SelectedItem.SelectedItem.SelectedItem;
// 如果有连线,那么要做的是删除连线
if (ConnectorVM.ConnectionVM != null)
{
nowTGPVM.BreakTopoLinkVM(ConnectorVM);
ResourceManager.mainWindowVM.Tips = "删除了图上连线";
}
// 如果已经是活动锚点,要清除活动状态
else if (nowTGPVM.ActiveConnector == ConnectorVM) // 也可用ConnectorVM.IsActive
{
ConnectorVM.IsActive = false;
nowTGPVM.ActiveConnector = null;
ResourceManager.mainWindowVM.Tips = "清除了锚点的预连线状态";
}
// 否则,即是空闲锚点
// 如果还没有活动锚点,设置其为活动锚点
else if (nowTGPVM.ActiveConnector == null)
{
nowTGPVM.ActiveConnector = ConnectorVM;
ConnectorVM.IsActive = true;
ResourceManager.mainWindowVM.Tips = "设置锚点为预连线锚点";
}
// 至此,说明已经有一个活动锚点了,且当前锚点是另一个空闲锚点,这时要从活动锚点连线到此锚点
else
{
nowTGPVM.CreateTopoLinkVM(nowTGPVM.ActiveConnector, ConnectorVM);
// 清除活动锚点
nowTGPVM.ActiveConnector.IsActive = false;
nowTGPVM.ActiveConnector = null;
ResourceManager.mainWindowVM.Tips = "创建了新的" + nowTGPVM.TopoLinkType + "连接关系";
}
e.Handled = true;
}
// 关闭窗体
private void close_event(object sender, CancelEventArgs e)
{
TopoGraph_P_VM topoGraph_P_VM = (TopoGraph_P_VM)ResourceManager.mainWindowVM.SelectedItem.SelectedItem.SelectedItem;
topoGraph_P_VM.PanelEnabled = true;
}
