/// <summary>
/// 连接图元
/// </summary>
/// <param name="flowChartManager">绘图管理器</param>
/// <param name="logicData">逻辑数据</param>
/// <returns>是否操作成功</returns>
protected virtual bool LogicConnect(FlowChartManager flowChartManager, object logicData)
{
object[] data = logicData as object[];
SlotGraphElement slot = data[0] as SlotGraphElement;
ConnectorGraphElement connector = data[1] as ConnectorGraphElement;
ConnectorContainer line = connector.Line;
if ((line.InSlotContainer != null && line.OutSlotContainer != null) || connector.Selected) // 连接线控制点处于被选中状态
{
flowChartManager.CurrentGraphManager.EditDataElement(line);
}
return(true);
}
public ConnectEventArgs(SlotGraphElement slot, ConnectorGraphElement connector)
{
this.slot = slot;
this.connector = connector;
}
/// <summary>
/// 删除图元
/// </summary>
/// <param name="graphElement">要删除的图元</param>
/// <return>是否删除成功</return>
protected bool DeleteGraphElement(GraphElement graphElement)
{
GraphManager graphManager = data as GraphManager;
DataManager dataManager = graphManager.CurrentFlowChartManager.CurrentDataManager;
List <GraphElement> list = new List <GraphElement>(); // 记录遍历过图元的链表
bool deleteSuccess = false; // 是否删除成功
if (graphElement is SlotContainer) // 要删除的图元是插槽容器
{
SlotContainer slotContainer = graphElement as SlotContainer;
ReBindEventNode(list, slotContainer, null, false); // 重新设定事件结点及图元是否可用
foreach (SlotGraphElement slot in slotContainer.GetSlotList())
{
if (slot.Binded) // 解除绑定连接线控制点
{
if (slot.IsOutSlot && slotContainer is ConditionGraphElement) // 对条件结点连出的线要进行有效性检查
{
ConnectorContainer line = slot.BindingConnector.Line;
if (line.Text == "×")
{
line.Invalid = false;
line.ShowText = false;
}
}
slot.UnBind();
}
}
graphManager.SlotContainerList.Remove(slotContainer); // 从插槽容器索引链表中删除
deleteSuccess = true;
}
else if (graphElement is ConnectorContainer) // 要删除的图元是连接线控制点容器
{
ConnectorContainer connectorContainer = graphElement as ConnectorContainer;
SlotContainer inSlotContainer = connectorContainer.InSlotContainer;
if (inSlotContainer != null)
{
connectorContainer.UnbindInSlotContainer();
}
ReBindEventNode(list, connectorContainer, null, false); // 重新设定事件结点及图元是否可用
SlotContainer outSlotContainer = connectorContainer.OutSlotContainer;
if (outSlotContainer != null)
{
connectorContainer.UnbindOutSlotContainer();
}
if (inSlotContainer is ConditionGraphElement) // 对条件结点连出的线要进行有效性检查
{
dataManager.CheckLineValid(inSlotContainer);
}
graphManager.ConnectorContainerList.Remove(connectorContainer); // 从连接线控制点索引容器中删除
deleteSuccess = true;
}
else if (graphElement is ConnectorGraphElement) // 要删除的图元是连接线控制点
{
ConnectorGraphElement connector = graphElement as ConnectorGraphElement;
if (connector.IsHeadPoint || connector.IsTailPoint) // 不允许删除头结点和尾结点
{
MessageBox.Show("不能删除头连接线控制点和尾连接线控制点！", "图元删除", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
connector.Line.RemoveConnector(connector);
deleteSuccess = true;
}
}
else if (graphElement is SlotGraphElement) // 要删除的图元是插槽
{
SlotGraphElement slot = graphElement as SlotGraphElement;
if (slot.CanDelete && (slot.IsInSlot || slot.SlotContainer.OutSlotCount > 1)) // 插槽可以删除
{
SlotContainer slotContainer = slot.SlotContainer;
slotContainer.RemoveSlot(slot);
deleteSuccess = true;
}
else
{
MessageBox.Show("该插槽不能删除", "图元删除", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
else if (graphElement is RemarkGraphElement) // 要删除的图元是注释结点
{
RemarkGraphElement remarkGraphElement = graphElement as RemarkGraphElement;
SlotContainer slotContainer = remarkGraphElement.Owner as SlotContainer;
slotContainer.RemarkNode = null;
remarkGraphElement.Owner = null;
remarkGraphElement = null;
deleteSuccess = true;
}
if (deleteSuccess) // 释放图元所占的资源
{
dataManager.DeleteData(graphElement);
graphElement.Release();
}
return(deleteSuccess);
}
/// <summary>
/// 绘制图元自身
/// </summary>
/// <param name="g">图形对象</param>
public override void Paint(Graphics g)
{
// 绘制边框色
Pen framePen;
Pen frameArrawPen;
//Pen shadowPen;
//Pen shadowArrawPen;
//Color shadowColor;
if (activated) // 当前图元被激活
{
framePen = new Pen(activatedColor, 1);
frameArrawPen = new Pen(activatedColor, 1);
//shadowColor = Color.FromArgb(127, activatedColor);
//shadowPen = new Pen(shadowColor, 2);
//shadowArrawPen = new Pen(shadowColor, 2);
}
else if (selected) // 当前图元被选中
{
framePen = new Pen(selectedColor, 1);
frameArrawPen = new Pen(SelectedColor, 1);
//shadowColor = Color.FromArgb(127, selectedColor);
//shadowPen = new Pen(shadowColor, 2);
//shadowArrawPen = new Pen(shadowColor, 2);
}
else // 当前图元没有被选中和激活
{
if (enable) // 图元的数据有效
{
framePen = new Pen(frameColor, 1);
frameArrawPen = new Pen(frameColor, 1);
}
else
{
framePen = new Pen(disableColor, 1);
frameArrawPen = new Pen(disableColor, 1);
}
// shadowColor = Color.FromArgb(127, frameColor);
// shadowPen = new Pen(shadowColor, 2);
// shadowArrawPen = new Pen(shadowColor, 2);
}
frameArrawPen.CustomEndCap = new AdjustableArrowCap((float)(frameArrawPen.Width * 3), (float)(frameArrawPen.Width * 4), true);
frameArrawPen.DashStyle = DashStyle.Dash;
framePen.DashStyle = DashStyle.Dash;
// shadowArrawPen.CustomEndCap = new AdjustableArrowCap((float)(shadowArrawPen.Width * 3), (float)(shadowArrawPen.Width * 4), true);
int index = 0;
ConnectorGraphElement head;
ConnectorGraphElement tail;
Size shadowSize = new Size(2, 0);
while (index + 1 < connectorList.Count)
{
head = connectorList[index];
tail = connectorList[index + 1];
if (index + 1 == connectorList.Count - 1) // 绘制带箭头的尾线
{
g.DrawLine(frameArrawPen, head.Location, tail.Location);
// g.DrawLine(shadowArrawPen, head.Location + shadowSize, tail.Location + shadowSize); // 绘制阴影
}
else // 绘制不带箭头的线
{
g.DrawLine(framePen, head.Location, tail.Location);
// g.DrawLine(shadowPen, head.Location + shadowSize, tail.Location + shadowSize); // 绘制阴影
}
index++;
}
// 绘制连接点
foreach (ConnectorGraphElement c in connectorList)
{
c.Paint(g);
}
// 绘制文本
if (showText)
{
int textX;
int textY;
if (connectorList.Count == 2) // 容器只有两个连接线控制点
{
ConnectorGraphElement connector1 = connectorList[0];
ConnectorGraphElement connector2 = connectorList[1];
textX = (int)((connector1.Location.X + connector2.Location.X) / 2 + 10);
textY = (int)((connector1.Location.Y + connector2.Location.Y) / 2 + 10);
}
else
{
ConnectorGraphElement connector = connectorList[1];
textX = connector.Location.X + 10;
textY = connector.Location.Y;
}
Brush textBrush = new SolidBrush(textColor);
g.DrawString(text, textFont, textBrush, textX, textY);
}
}
public ConnectEventArgs(SlotGraphElement slot, ConnectorGraphElement connector)
{
this.slot = slot;
this.connector = connector;
}