예제 #1
0
        /// <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();
            }
        }
예제 #2
0
        /// <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();
        }