wfendactivity.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;
namespace WorkflowDesigner.Designer
{
    /// <summary>
    /// 结束可视化对象
    /// </summary>
    public class WfEndActivity:WfAbstractActivity
    {
        #region 字段



        #endregion

        #region 属性


        #endregion

        #region　构造函数
        /// <summary>
        /// 构造函数
        /// </summary>
        public WfEndActivity(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.White;
            }
            using (Pen pen = new Pen(c))
            {
                pen.Color = 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.end1;

            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 "1";
        }
        #endregion

        #region 公用


        #endregion
        #endregion

        
    }
}