/// <summary>
/// 释放拖放
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Grid_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
var data = Helper.DragDrop.GetData();
if (data is System.Windows.Controls.Primitives.Popup)
{
var pop = data as System.Windows.Controls.Primitives.Popup;
var unit = pop.Child as Elements.Unit;
if (unit != null)
{
pop.Child = null;
unit.Position = CanvasGrid.CheckPosition(e.GetPosition(CanvasGrid.BackCanvas));
var el = CanvasGrid.GetElement(unit.Position);
//必须是当前位置无元素方可放置
if (!(el is Elements.Unit))
{
CanvasGrid.AddElement(unit);
BindMenu();//绑定菜单
}
}
pop.IsOpen = false;
Helper.DragDrop.Clear();
StopDrag();
}
}
/// <summary>
/// 拖放完成
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void thumb_DragCompleted(object sender, System.Windows.Controls.Primitives.DragCompletedEventArgs e)
{
if (CanvasGrid == null)
{
return;
}
var p = new Point();
p.X = Canvas.GetLeft(this);
if (p.X == double.NaN)
{
p.X = 0;
}
p.Y = Canvas.GetTop(this);
if (p.Y == double.NaN)
{
p.Y = 0;
}
CanvasGrid.CheckCanvasGrid();
//var p = new Point(firstClickPosition.X + e.HorizontalChange, firstClickPosition.Y + e.VerticalChange);
var newp = CanvasGrid.CheckPosition(p);
//如果当前位置已有元素
//则放弃落地
var el = CanvasGrid.GetElement(newp);
if (el == null && newp.X != 0)
{
this.Position = newp;
}
this.Opacity = 1;
//重新定位。
this.ResetPosition();
}