/// <summary>
/// 鼠标拖拽触发的事件
/// </summary>
/// <param name="e"></param>
protected override void OnDrop(DragEventArgs e)
{
base.OnDrop(e);
this.Focus();
DragObject dragObject = e.Data.GetData(typeof(DragObject)) as DragObject;
if (dragObject != null && !String.IsNullOrEmpty(dragObject.Xaml))
{
DesignerItem newItem = null;
Object content = XamlReader.Load(XmlReader.Create(new StringReader(dragObject.Xaml)));
if (content != null)
{
int maxValue = value++;
newItem = new DesignerItem(TradeCode, maxValue.ToString());
newItem.Content = content;
var lbl = content as Label;
if (lbl != null)
{
newItem.ToolTip = lbl.ToolTip;
}
Point position = e.GetPosition(this);
if (dragObject.DesiredSize.HasValue)
{
Size desiredSize = dragObject.DesiredSize.Value;
newItem.Width = desiredSize.Width;
newItem.Height = desiredSize.Height;
MyCanvas.SetLeft(newItem, Math.Max(0, position.X - newItem.Width / 2));
MyCanvas.SetTop(newItem, Math.Max(0, position.Y - newItem.Height / 2));
}
else
{
MyCanvas.SetLeft(newItem, Math.Max(0, position.X));
MyCanvas.SetTop(newItem, Math.Max(0, position.Y));
}
this.Children.Add(newItem);
//更新选中项
foreach (ISelectable item in this.SelectedItems)
{
item.IsSelected = false;
}
SelectedItems.Clear();
newItem.IsSelected = true;
this.SelectedItems.Add(newItem);
}
e.Handled = true;
}
}
/// <summary>
/// 更新设计面板中集合
/// </summary>
private void UpdateZIndex()
{
//更新所有元素
List <UIElement> ordered = (from UIElement item in this.Children
orderby Canvas.GetZIndex(item as UIElement)
select item as UIElement).ToList();
for (int i = 0; i < ordered.Count; i++)
{
//Canvas.SetZIndex(ordered[i], i);
}
//更新item序号
List <DesignerItem> ordereditem = (from DesignerItem item in this.Children.OfType <DesignerItem>()
orderby Convert.ToInt32((item as DesignerItem).CurrentSerialNumber)
select item as DesignerItem).ToList();
value = ordereditem.Count;
for (int i = 0; i < ordereditem.Count; i++)
{
ordereditem[i].CurrentSerialNumber = i.ToString();
ContentPresenter contentPresenter =
ordereditem[i].Template.FindName("PART_ContentPresenter", ordereditem[i]) as ContentPresenter;
if (contentPresenter != null)
{
if (VisualTreeHelper.GetChildrenCount(contentPresenter) > 0)
{
UIElement contentVisual = VisualTreeHelper.GetChild(contentPresenter, 0) as UIElement;
Label txt = DesignerItem.FindVisualChild <Label>(contentVisual as Label);
if (txt != null)
{
txt.Content = ordereditem[i].CurrentSerialNumber;
}
}
}
}
//更新所有连线
List <Connection> orderedconn = (from Connection item in this.Children.OfType <Connection>()
select item as Connection).ToList();
orderedconn.ForEach(x =>
{
if (x.Sink.ParentDesignerItem != null)
{
x.Sink.ParentDesignerItem.ParentSerialNumber = x.Source.ParentDesignerItem.CurrentSerialNumber;
}
});
}
void DragThumb_DragDelta(object sender, DragDeltaEventArgs e)
{
DesignerItem designerItem = this.DataContext as DesignerItem;
MyCanvas designer = VisualTreeHelper.GetParent(designerItem) as MyCanvas;
if (designerItem != null && designer != null && designerItem.IsSelected)
{
double minLeft = double.MaxValue;
double minTop = double.MaxValue;
var designerItems = from item in designer.SelectedItems
where item is DesignerItem
select item;
foreach (DesignerItem item in designerItems)
{
double left = Canvas.GetLeft(item);
double top = Canvas.GetTop(item);
minLeft = double.IsNaN(left) ? 0 : Math.Min(left, minLeft);
minTop = double.IsNaN(top) ? 0 : Math.Min(top, minTop);
}
double deltaHorizontal = Math.Max(-minLeft, e.HorizontalChange);
double deltaVertical = Math.Max(-minTop, e.VerticalChange);
foreach (DesignerItem item in designerItems)
{
double left = Canvas.GetLeft(item);
double top = Canvas.GetTop(item);
if (double.IsNaN(left))
{
left = 0;
}
if (double.IsNaN(top))
{
top = 0;
}
Canvas.SetLeft(item, left + deltaHorizontal);
Canvas.SetTop(item, top + deltaVertical);
}
designer.InvalidateMeasure();
e.Handled = true;
}
}
/// <summary>
/// Load加载事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void DesignerItem_Loaded(object sender, RoutedEventArgs e)
{
if (base.Template != null)
{
ContentPresenter contentPresenter =
this.Template.FindName("PART_ContentPresenter", this) as ContentPresenter;
if (contentPresenter != null)
{
if (VisualTreeHelper.GetChildrenCount(contentPresenter) > 0)
{
UIElement contentVisual = VisualTreeHelper.GetChild(contentPresenter, 0) as UIElement;
Label txt = FindVisualChild <Label>(contentVisual as Label);
if (txt != null)
{
txt.Content = CurrentSerialNumber;
}
ComponentCode = (contentVisual as Label).Tag.ToString().Trim();
if (contentVisual != null)
{
DragThumb thumb = this.Template.FindName("PART_DragThumb", this) as DragThumb;
Control connectorDecorator = this.Template.FindName("PART_ConnectorDecorator", this) as Control;
if (thumb != null)
{
ControlTemplate template =
DesignerItem.GetDragThumbTemplate(contentVisual) as ControlTemplate;
if (template != null)
{
thumb.Template = template;
}
}
if (connectorDecorator != null)
{
ControlTemplate template =
DesignerItem.GetConnectorDecoratorTemplate(contentVisual) as ControlTemplate;
if (template != null)
{
connectorDecorator.Template = template;
}
}
}
}
}
}
}
/// <summary>
/// 反解析交易流程
/// </summary>
/// <param name="itemXML">TradeFlow对象</param>
/// <param name="key">当前流程ID</param>
/// <param name="OffsetX">X轴偏移量</param>
/// <param name="OffsetY">Y轴偏移量</param>
/// <param name="lbl">DesignerItem对象</param>
/// <returns>DesignerItem</returns>
private static DesignerItem DeserializeDesignerItem(string tradecode, string key, float OffsetX, float OffsetY, Label lbl, Dictionary <string, string> m_Connection, List <SubRel> subRelList = null)
{
var lb = new Label();
lb.IsHitTestVisible = false;
lb.Tag = lbl.Tag;
lb.Foreground = Brushes.Red;
lb.Width = 145;
lb.Content = lbl.Content;
var tmptooltip = "";
if (m_Connection != null && m_Connection.Count > 0)
{
foreach (var o in m_Connection)
{
tmptooltip += o.Key + "," + o.Value + "\n";
}
tmptooltip += "---------------------\n";
}
if (subRelList != null && subRelList.Count > 0)
{
subRelList.ForEach(x =>
{
tmptooltip += x.Memo + "," + x.InData + "," + x.InType.ToString() + "," + x.OutData + "\n";
});
}
lb.ToolTip = tmptooltip;
lb.Style = DesignerStyle as Style;
var item = new DesignerItem(tradecode, key, subRelList, m_Connection);
item.Width = 145;
item.Height = 23;
item.IsGroup = true;
Canvas.SetLeft(item, Double.Parse("10", CultureInfo.InvariantCulture) + OffsetX);
Canvas.SetTop(item, Double.Parse("5", CultureInfo.InvariantCulture) + OffsetY);
Canvas.SetZIndex(item, 1);
item.Content = lb;
item.ToolTips = lb.ToolTip.ToString();
return(item);
}
/// <summary>
/// 递归查找流程线条，线条是否已经连接。
/// </summary>
/// <param name="SourceDesignerItem">原元素</param>
/// <param name="HitDesignerItem">目标元素</param>
/// <returns>True-存在，False-不存在</returns>
public bool TraversalParentElement(DesignerItem SourceDesignerItem, DesignerItem HitDesignerItem)
{
bool result = false;
foreach (var item in this.designerCanvas.Children)
{
if (item is Connection)
{
var sinkItem = item as Connection;
if (sinkItem.Source.ParentDesignerItem == hitDesignerItem && sinkItem.Sink.ParentDesignerItem == SourceDesignerItem)//判断相邻两个元素是否存在线条
{
if (sinkItem.Source.ParentDesignerItem == hitDesignerItem && sinkItem.Sink.ParentDesignerItem == SourceDesignerItem)
{
result = true;
break;
}
}
if (TempDesignerItem != null)
{
if (TempDesignerItem == hitDesignerItem)
{
result = true;
break;
}
}
if (sinkItem.Sink.ParentDesignerItem == SourceDesignerItem)//判断不相邻两个元素是否存在线条
{
if (sinkItem.Source.ParentDesignerItem != hitDesignerItem)
{
TempDesignerItem = sinkItem.Source.ParentDesignerItem;
result = this.TraversalParentElement(sinkItem.Source.ParentDesignerItem, hitDesignerItem);
}
}
}
}
return(result);
}
/// <summary>
/// 打开流程
/// </summary>
/// <param name="tradeFlowListEntity">交易流程实体层</param>
/// <param name="typeList">组件类型列表</param>
/// <param name="subRelListEntity">映射关系实体层</param>
public void Open(List <T_plt_tradeFlowEntity> tradeFlowListEntity, List <Label> typeList, List <T_plt_subrelEntity> subRelListEntity)
{
#region 初始化
flowList = new List <TradeFlow>(); //流程实例列表
var sublist = new List <SubRel>(); //参数关系列表
//List<string> connectionOverList = new List<string>();//零时序号列表
if (SerialNumber != null)
{
SerialNumber.Clear(); //清空序号
}
Children.Clear(); //清空画布
SelectService.ClearSelection(); //清空画布引用关系
#endregion
#region 实体转换
if (tradeFlowListEntity != null)
{
if (tradeFlowListEntity.Count() > 0)
{
tradeFlowListEntity.ForEach(x5 =>
{
var flow = new TradeFlow();
flow.TradeCode = x5.TxCode.Trim();
flow.CompCode = x5.CompCode.Trim();
flow.Trade_Flow = x5.TradeFlow.Trim();
flow.FlowCode = x5.FlowCode.Trim();
flowList.Add(flow);
});
}
}
if (subRelListEntity != null)
{
if (subRelListEntity.Count() > 0)
{
subRelListEntity.ForEach(x =>
{
var rel = new SubRel();
rel.TradeCode = x.tx_code.Trim();
rel.CompCode = x.comp_code.Trim();
rel.OutData = x.out_data.Trim();
rel.InType = x.in_data_type.Trim() == "1"?TypeOpt.常量:TypeOpt.表达式;
rel.InData = x.in_data.Trim();
rel.Memo = x.memo.Trim();
rel.SerialNumber = x.flow_no.Trim();
sublist.Add(rel);
});
}
}
#endregion
if (flowList.Count() < 1)
{
return; //如果不存在交易流程，返回
}
#region item和线的处理
LayOut();//对容器的元素进行布局
var i = 0;
foreach (Tx_Node node in m_LstNodes)
{
SerialNumber.Add(Convert.ToInt32(node.Flow_code)); //组件
var lbl = typeList.Where(z => z.Tag.ToString().Trim() == node.Component_code.Trim()).FirstOrDefault();
if (lbl != null)
{
var tmp = new List <SubRel>();
sublist.ForEach(x =>
{
if (x.SerialNumber == node.Flow_code)
{
tmp.Add(x);
}
});
var item = DeserializeDesignerItem(TradeCode, node.Flow_code, node.X, node.Y, lbl, m_Connection[node.Component_code], tmp);
if (!string.IsNullOrWhiteSpace(node.Sub_tx_code.Trim()))
{
item.IsDragConnectionOver = true;
}
Canvas.SetZIndex(item, 1);
this.Children.Add(item);
ControlTemplate template = DesignerItem.GetConnectorDecoratorTemplate(item) as ControlTemplate;
DesignerItem.SetConnectorDecoratorTemplate(item, template);
}
i++;
}
this.InvalidateVisual();//使元素的呈现无效，并强制执行完整的新布局处理过程。布局循环完成后
if (m_LstEntrys == null)
{
return;
}
foreach (Tx_Entry entry in m_LstEntrys)
{
string sourceID = entry.StartNode;
string sinkID = entry.EndNode;
if (!string.IsNullOrEmpty(sinkID) && !string.IsNullOrEmpty(sourceID))
{
var sourceConnector = GetConnector(sourceID, 6);
var sinkConnector = GetConnector(sinkID, 2);
var connection = new Connection(sourceConnector, sinkConnector, entry.Condition, entry.ConditionList);
Canvas.SetZIndex(connection, 2);
this.Children.Add(connection);
}
}
#endregion
//value = SerialNumber.OrderByDescending(x2 => x2).FirstOrDefault() + 1;//出
UpdateZIndex();
}