wfactivity.cs

这个是自己制作的工作流设计器,可以可视化的拖拉

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Xml;
using System.Collections;
namespace WorkflowDesigner.Designer
{
    /// <summary>
    /// 普通节点可视化对象
    /// </summary>
    public class WfActivity :WfAbstractActivity
    {
         #region 字段
        /// <summary>
        /// 角色对象
        /// </summary>
        private WfRole _role;

        /// <summary>
        /// 应用程序对象
        /// </summary>
        private IList<WfApplication> _appList = new List<WfApplication>();

     
        /// <summary>
        /// 是否允许回退
        /// </summary>
        private int _isSendBack = 1;

        /// <summary>
        /// 是否允许岗位内提交
        /// </summary>
        private int _isSendSelf = 1;

        /// <summary>
        /// 时限（工作日）
        /// </summary>
        private double _workday = 0;

        /// <summary>
        /// 预警时间(工作日)
        /// </summary>
        private double _warning_time = 0;

        /// <summary>
        /// 选择用户类型 ISSELECTUSER 是否选择用户 0为选择用户 1为选择之前某个指定的节点用户
        /// </summary>
        private int _isSelectUser = 0;
     
        /// <summary>
        /// 接受前事件
        /// </summary>
        private String _beforeRecive_Event = "";

        
        /// <summary>
        /// 发送后事件
        /// </summary>
        private String _afterSend_Event = "";

        

        /// <summary>
        /// 之前节点
        /// </summary>
        private WfActivity _before_ActiveInfo;

        /// <summary>
        /// 之前节点
        /// </summary>
        public WfActivity Before_ActiveInfo
        {
            get { return _before_ActiveInfo; }
            set { _before_ActiveInfo = value; }
        }

       

                
        /// <summary>
        /// 节点参数
        /// </summary>
        private IList<WfParam> _paramsInfo = new List<WfParam>();

        
        #endregion

        #region 属性
        /// <summary>
        /// 角色对象
        /// </summary>
        public WfRole Role
        {
            get { return _role; }
            set { _role = value; }
        }
        /// <summary>
        /// 应用程序对象
        /// </summary>
        internal IList<WfApplication> AppList
        {
            get { return _appList; }
            set { _appList = value; }
        }
       

        /// <summary>
        /// 是否允许回退
        /// </summary>
        public int IsSendBack
        {
            get { return _isSendBack; }
            set { _isSendBack = value; }
        }

        /// <summary>
        /// 是否允许岗位内提交
        /// </summary>
        public int IsSendSelf
        {
            get { return _isSendSelf; }
            set { _isSendSelf = value; }
        }

        /// <summary>
        /// 时限（工作日）
        /// </summary>
        public double Workday
        {
            get { return _workday; }
            set { _workday = value; }
        }


        /// <summary>
        /// 预警时间(工作日)
        /// </summary>
        public double Warning_time
        {
            get { return _warning_time; }
            set { _warning_time = value; }
        }


        /// <summary>
        /// 选择用户类型 ISSELECTUSER 是否选择用户 0为选择用户 1为选择之前某个指定的节点用户
        /// </summary>
        public int IsSelectUser
        {
            get { return _isSelectUser; }
            set { _isSelectUser = value; }
        }
        /// <summary>
        /// 发送后事件
        /// </summary>
        public String AfterSend_Event
        {
            get { return _afterSend_Event; }
            set { _afterSend_Event = value; }
        }
        /// <summary>
        /// 接受前事件
        /// </summary>
        public String BeforeRecive_Event
        {
            get { return _beforeRecive_Event; }
            set { _beforeRecive_Event = value; }
        }

        

        /// <summary>
        /// 节点参数
        /// </summary>
        public IList<WfParam> ParamsInfo
        {
            get { return _paramsInfo; }
            set { _paramsInfo = value; }
        }
        #endregion

        #region　构造函数
        /// <summary>
        /// 构造函数
        /// </summary>
        public WfActivity(int x, int y)
            : base(x, y)
        { 
        
        }
        #endregion

        #region 操作

        #region 私有
        #endregion

        #region 保护


        /// <summary>
        /// 绘制
        /// </summary>
        /// <param name="g">绘图图面</param>
        protected override void DrawIcon(System.Drawing.Graphics g)
        {

            Color c;
            if (IsSelected)
            {
                c = Color.Red;
            }
            else
            {
                //c = Color.Blue;
                c = Color.White;
            }
            using (Pen pen = new Pen(c))
            {
                g.DrawRectangle(pen, _rect);
            }
            using (Brush brush = new SolidBrush(Color.White))
            {
                g.FillRectangle(brush, _rect);
            }
            ImageAttributes imAtt = new ImageAttributes();
            //设置颜色键
            imAtt.SetColorKey(Color.FromArgb(255, 0, 255), Color.FromArgb(255, 0, 255));
            // 画箭头
            Bitmap arrowBitmap = WorkflowDesigner.Properties.Resources.active1;

            int imgWidth = arrowBitmap.Width;
            int imgHeight = arrowBitmap.Height;
            GraphicsState gs = g.Save();
            //绘制图片
            g.DrawImage(arrowBitmap, _rect,
                0, 0,
                imgWidth,
                imgWidth,
                GraphicsUnit.Pixel,
                imAtt);
            //释放
            imAtt.Dispose();
            arrowBitmap.Dispose();
            //还原到原来的表示状态
            g.Restore(gs);

            
        }
        /// <summary>
        /// 得到节点类型
        /// </summary>
        /// <returns>该节点的类型</returns>
        protected override string GetActivityType()
        {
            //类型0 开始 1 结束 2普通 3 分支 4聚合
            return "2";
        }

        /// <summary>
        /// 在创建xml元素后
        /// </summary>
        /// <param name="actElement">节点xml元素</param>
        protected override void 
            AfterCreateXmlElement(XmlElement actElement)
        {
            //需要改动
            //XmlAttribute attr = new XmlAttribute();
            
            /* 
             XmlAttribute attr =   actElement.OwnerDocument.CreateAttribute("flowSelect");
            attr.Value = FlowSelect;
            actElement.Attributes.Append(attr);