private void OnGraphControlConnectionDragStarted(object sender, ConnectionDragStartedEventArgs e)
{
var currentDragPoint = Mouse.GetPosition(GraphControl);
var connection = ViewModel.OnConnectionDragStarted(currentDragPoint);
e.Connection = connection;
}
private void OnGraphControlConnectionDragStarted(object sender, ConnectionDragStartedEventArgs e)
{
var sourceConnector = (ConnectorViewModel)e.SourceConnector.DataContext;
var currentDragPoint = Mouse.GetPosition(GraphControl);
var connection = ViewModel.OnConnectionDragStarted(sourceConnector, currentDragPoint);
e.Connection = connection;
}
/*
* Unfortunately, this MVVM-friendly stuff didn't work with NetworkView: ((
*
* cal:Message.Attach="[Event ConnectionDragStarted] = [Action ConnectionDragStarted($eventArgs)];
* [Event ConnectionDragging] = [Action ConnectionDragging($eventArgs)];
* [Event ConnectionDragCompleted] = [Action ConnectionDragCompleted($eventArgs)]"
*/
private void NetworkControl_ConnectionDragStarted(object sender, ConnectionDragStartedEventArgs e)
{
var draggedOutConnector = (ConnectorViewModel)e.ConnectorDraggedOut;
var dragPoint = Mouse.GetPosition(networkControl);
var context = DataContext as MainViewModel;
e.Connection = context.ConnectionDragStarted(draggedOutConnector, dragPoint);
}
private void networkControl_ConnectionDragStarted(object sender, ConnectionDragStartedEventArgs e)
{
var draggedOutConnector = (ConnectorViewModel)e.ConnectorDraggedOut;
var curDragPoint = Mouse.GetPosition(NetworkControl);
var connection = ViewModel.ConnectionDragStarted(draggedOutConnector, curDragPoint);
e.Connection = connection;
}
private void OnGraphControlConnectionDragStarted(object sender, ConnectionDragStartedEventArgs e)
{
elementsCanvas ??= graphControl.FindDescendantOfType <Canvas>();
var sourceConnector = (ConnectorViewModel <QuestViewModel, QuestConnectionViewModel>)e.SourceConnector.DataContext !;
var currentDragPoint = e.GetPosition(elementsCanvas);
var connection = ViewModel.OnConnectionDragStarted(sourceConnector, currentDragPoint);
e.Connection = connection;
}
/// 当用户[开始]拖动锚点连线时触发此事件
private void networkControl_ConnectionDragStarted(object sender, ConnectionDragStartedEventArgs e)
{
// 创建锚点的ViewModel
var draggedOutConnector = (ConnectorViewModel)e.ConnectorDraggedOut;
// 获取拖动的起始位置
var curDragPoint = Mouse.GetPosition(networkControl);
// "开始拖动"调用的方法，传入锚点和起始位置，获取到连线Connection
var connection = this.ViewModel.ConnectionDragStarted(draggedOutConnector, curDragPoint);
// 将连线写入到事件对象中去，这样才能在鼠标松开前一直保持这个连线
e.Connection = connection;
}
/// <summary>
/// Event raised when the user has started to drag out a connection.
/// </summary>
private void networkControl_ConnectionDragStarted(object sender, ConnectionDragStartedEventArgs e)
{
ConnectorViewModel draggedOutConnector = (ConnectorViewModel)e.ConnectorDraggedOut;
System.Windows.Point curDragPoint = Mouse.GetPosition(networkControl);
// Delegate the real work to the view model.
ConnectionViewModel connection = ViewModel.ConnectionDragStarted(draggedOutConnector, curDragPoint);
// Must return the view-model object that represents the connection via the event args.
// This is so that NetworkView can keep track of the object while it is being dragged.
e.Connection = connection;
}
/// <summary>
/// Event raised when the user has started to drag out a connection.
/// </summary>
private void networkControl_ConnectionDragStarted(Object sender, ConnectionDragStartedEventArgs e)
{
var draggedOutConnector = (EntryViewModel)e.ConnectorDraggedOut;
var curDragPoint = Mouse.GetPosition(networkControl);
//
// Delegate the real work to the view model.
//
var connection = this.ViewModel.ConnectionDragStarted(draggedOutConnector, curDragPoint);
//
// Must return the view-model object that represents the connection via the event args.
// This is so that NetworkView can keep track of the object while it is being dragged.
//
e.Connection = connection;
}
