private void HandleMoveInfoByPosition(ControlActionInfo controlActionInfo, MoveInfoByPosition moveInfo)
{
var control = controlActionInfo.Control;
var timeSpan = moveInfo.TimeSpan;
double width = Double.IsNaN(control.Width) ? 0 : control.Width;
double height = Double.IsNaN(control.Height) ? 0 : control.Height;
if (timeSpan.TotalMilliseconds == 0) // 如果时间间隔为0 那么直接对位置进行赋值
{
this.RaiseEvent(new ActionEventArgs(MovingStartEvent, this)
{
Storyboard = null, ActionInfo = moveInfo
});
controlActionInfo.InAction = true;
control.SetValue(Canvas.LeftProperty, moveInfo.DestX - width / 2);
control.SetValue(Canvas.TopProperty, moveInfo.DestY - height / 2);
controlActionInfo.InAction = false;
this.RaiseEvent(new ActionEventArgs(MovingEndEvent, this)
{
Storyboard = null, ActionInfo = moveInfo
});
HandleActionInfo(controlActionInfo);
}
else
{
var storyboard = new Storyboard();
var xda = new DoubleAnimation();
Storyboard.SetTarget(xda, control);
Storyboard.SetTargetProperty(xda, new PropertyPath(Canvas.LeftProperty));
xda.From = (double)control.GetValue(Canvas.LeftProperty);
xda.To = (moveInfo.DestX - width / 2);
xda.Duration = new Duration(timeSpan);
var yda = new DoubleAnimation();
Storyboard.SetTarget(yda, control);
Storyboard.SetTargetProperty(yda, new PropertyPath(Canvas.TopProperty));
yda.From = (double)control.GetValue(Canvas.TopProperty);
yda.To = (moveInfo.DestY - height / 2);
yda.Duration = new Duration(timeSpan);
storyboard.Children.Add(xda);
storyboard.Children.Add(yda);
storyboard.Completed += (sender, e) =>
{
controlActionInfo.InAction = false;
this.RaiseEvent(new ActionEventArgs(MovingEndEvent, this)
{
Storyboard = storyboard, ActionInfo = moveInfo
});
HandleActionInfo(controlActionInfo);
};
this.RaiseEvent(new ActionEventArgs(MovingStartEvent, this)
{
Storyboard = storyboard, ActionInfo = moveInfo
});
storyboard.Begin(this);
controlActionInfo.InAction = true;
}
}
private void HandleActionInfo(ControlActionInfo controlActionInfo)
{
if (controlActionInfo == null)
{
throw new ArgumentNullException("controlActionInfo");
}
if (controlActionInfo.ActionQueue.Count == 0)
{
return;
}
if (controlActionInfo.InAction)
{
return;
}
var actionInfo = controlActionInfo.ActionQueue.Dequeue();
if (actionInfo is MoveInfoByPosition)
{
HandleMoveInfoByPosition(controlActionInfo, actionInfo as MoveInfoByPosition);
}
}