lj_plc/Controls/Mesnac.Controls.Default/MultiColHeaderDgv.cs

<EFBFBD><EFBFBD>using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using System.ComponentModel;

namespace Mesnac.Controls.Default
{
    public partial class MultiColHeaderDgv : DataGridView
    {        

        #region W[<EFBFBD>k<EFBFBD>[<EFBFBD>

        /// <summary>Y<EFBFBD>}RjL<EFBFBD><EFBFBD>v9jP}<EFBFBD>i
        /// 
        /// </summary>
        private TreeView _ColHeaderTreeView;
           
        /// <summary>9j<EFBFBD>vg'Yd\xe
        /// 
        /// </summary>
        public int iNodeLevels;

        /// <summary>N<EFBFBD>}RjL<EFBFBD><EFBFBD>vؚ<EFBFBD>^
        /// 
        /// </summary>
        private int iCellHeight;

        /// <summary>@b	gI<EFBFBD><EFBFBD>{ޞ
        /// 
        /// </summary>
        public IList<TreeNode> ColLists = new List<TreeNode>();

         #endregion

        #region l\'`<EFBFBD>[<EFBFBD>

        /// <summary>Y<EFBFBD>}RjL<EFBFBD><EFBFBD>v9jP}<EFBFBD>i
        /// 
        /// </summary>
        [
          Description("Y<>}RjL<6A><4C>v9jP}<7D>i")
        ]
        public TreeView myColHeaderTreeView
        {
            get { return _ColHeaderTreeView; }
            set { _ColHeaderTreeView = value; }
        }

        #endregion

        #region <EFBFBD>e<EFBFBD>l<EFBFBD>Qxe

        /// <summary>^<EFBFBD>xk<EFBFBD><EFBFBD>{9jg'Yd\xe<EFBFBD>&N<EFBFBD>OX[@b	gI<EFBFBD><EFBFBD>{ޞ
        /// 
        /// </summary>
        /// <param name="tnc"></param>
        /// <returns></returns>
        private int myGetNodeLevels(TreeNodeCollection tnc)
        {
            if (tnc == null) return 0;

            foreach (TreeNode tn in tnc)
            {
                if ((tn.Level + 1) > iNodeLevels)//tn.Level/f<EFBFBD>_0<EFBFBD><EFBFBD><EFBFBD>Y<EFBFBD>v
                {
                    iNodeLevels = tn.Level+1;
                }

                if (tn.Nodes.Count > 0)
                {                    
                    myGetNodeLevels(tn.Nodes);
                }
                else
                {
                    ColLists.Add(tn);//I<EFBFBD><EFBFBD>{ޞ
                }
            }

            return iNodeLevels;
        }

        /// <summary><EFBFBD><EFBFBD>(u^<EFBFBD>xkBlg'Yd\xe
0R-<EFBFBD>=~ؚ
        /// 
        /// </summary>
        public void myNodeLevels()
        {

            iNodeLevels = 1;//R<EFBFBD>Y<EFBFBD>p1

            ColLists.Clear();

            int iNodeDeep = myGetNodeLevels(_ColHeaderTreeView.Nodes);

            iCellHeight = this.ColumnHeadersHeight;

            this.ColumnHeadersHeight = this.ColumnHeadersHeight * iNodeDeep;//R-<EFBFBD>=~ؚ=N<EFBFBD>}Rؚ*d\xe

        }

        /// <summary><EFBFBD><EFBFBD><EFBFBD>_Tv^h<EFBFBD><EFBFBD>W[<EFBFBD>k<EFBFBD>v<EFBFBD>[<EFBFBD>^
        /// 
        /// </summary>
        /// <param name="node">W[<EFBFBD>k<EFBFBD><EFBFBD><EFBFBD>p</param>
        /// <returns>W[<EFBFBD>k<EFBFBD>[<EFBFBD>^</returns>
        private int GetUnitHeaderWidth(TreeNode node)
        {            
            int uhWidth = 0;
            //<EFBFBD><EFBFBD><EFBFBD>_g<EFBFBD>^B\W[<EFBFBD>k<EFBFBD>v<EFBFBD>[<EFBFBD>^
            if (node.Nodes == null)
                return this.Columns[GetColumnListNodeIndex(node)].Width;

            if (node.Nodes.Count == 0)
                return this.Columns[GetColumnListNodeIndex(node)].Width;
            
            //<EFBFBD><EFBFBD><EFBFBD>_^<EFBFBD>g<EFBFBD>^B\W[<EFBFBD>k<EFBFBD>v<EFBFBD>[<EFBFBD>^
            for (int i = 0; i <= node.Nodes.Count - 1; i++)
            {
                uhWidth = uhWidth + GetUnitHeaderWidth(node.Nodes[i]);
            }
            return uhWidth;
        }

        /// <summary><EFBFBD><EFBFBD><EFBFBD>_<EFBFBD>^B\W[<EFBFBD>k"}_
        /// 
        /// </summary>
        ///' <param name="node"><EFBFBD>^B\W[<EFBFBD>k<EFBFBD><EFBFBD><EFBFBD>p</param>
        /// <returns>"}_</returns>
        /// <remarks></remarks>
        private int GetColumnListNodeIndex(TreeNode node)
        {
            for (int i = 0; i <= ColLists.Count - 1; i++)
            {
                if (ColLists[i].Equals(node))
                    return i;
            }
            return -1;
        }

        ///<summary><EFBFBD>~6RTv^h<EFBFBD>4Y
        ///
        ///</summary>
        ///<param name="node">Tv^h<EFBFBD>4Y<EFBFBD><EFBFBD><EFBFBD>p</param>
        ///<param name="e"><EFBFBD>~<EFBFBD>V<EFBFBD>SpeƖ</param>
        ///<param name="level"><EFBFBD>~<EFBFBD>p<EFBFBD>m<EFBFBD>^</param>
        ///<remarks></remarks>
        public void PaintUnitHeader(
                        TreeNode node,
                        System.Windows.Forms.DataGridViewCellPaintingEventArgs e,
                        int level)
        {
            //9h<EFBFBD><EFBFBD><EFBFBD>p<EFBFBD>e<EFBFBD><EFBFBD>Q<EFBFBD>R_<EFBFBD>(u
            if (level == 0)
                return;

            RectangleF uhRectangle;
            int uhWidth;
            SolidBrush gridBrush = new SolidBrush(this.GridColor);
            SolidBrush backColorBrush = new SolidBrush(e.CellStyle.BackColor);
            Pen gridLinePen = new Pen(gridBrush);
            StringFormat textFormat = new StringFormat();                       

            textFormat.Alignment = StringAlignment.Center;

            uhWidth = GetUnitHeaderWidth(node);

            //N<EFBFBD>S4<EFBFBD><EFBFBD>{<EFBFBD>l	g@b:S+R(Wُ0
            if (node.Nodes.Count == 0)
            {
                uhRectangle = new Rectangle(e.CellBounds.Left,
                            e.CellBounds.Top + node.Level * iCellHeight,
                            uhWidth - 1,
                            iCellHeight * (iNodeLevels  - node.Level) - 1);
            }
            else
            {
                uhRectangle = new Rectangle(
                            e.CellBounds.Left,
                            e.CellBounds.Top + node.Level * iCellHeight,
                            uhWidth - 1,
                            iCellHeight - 1);
            }

            //;u<EFBFBD>wb_
            e.Graphics.FillRectangle(backColorBrush, uhRectangle);

            //R<EFBFBD>^<EFBFBD>~
            e.Graphics.DrawLine(gridLinePen
                                , uhRectangle.Left
                                , uhRectangle.Bottom
                                , uhRectangle.Right
                                , uhRectangle.Bottom);
            //R<EFBFBD>S<EFBFBD>z<EFBFBD>~
            e.Graphics.DrawLine(gridLinePen
                                , uhRectangle.Right
                                , uhRectangle.Top
                                , uhRectangle.Right
                                , uhRectangle.Bottom);

            e.Graphics.DrawString(node.Text, this.ColumnHeadersDefaultCellStyle.Font
                                    , Brushes.Black 
                                    , uhRectangle.Left + uhRectangle.Width / 2 -
                                    e.Graphics.MeasureString(node.Text, this.ColumnHeadersDefaultCellStyle.Font).Width / 2 - 1
                                    , uhRectangle.Top +
                                    uhRectangle.Height / 2 - e.Graphics.MeasureString(node.Text, this.ColumnHeadersDefaultCellStyle.Font).Height / 2);

            //<EFBFBD>R_<EFBFBD>(u()
            if (node.PrevNode == null)
                if (node.Parent != null)
                    PaintUnitHeader(node.Parent, e, level - 1);
        }

        #endregion

        //͑<EFBFBD>[h<EFBFBD>-<EFBFBD>
        protected override void OnCellPainting(DataGridViewCellPaintingEventArgs e)
        {
            try
            {
                //L<EFBFBD>h<EFBFBD><EFBFBD>
N͑<EFBFBD>Q
                if (e.ColumnIndex < 0)
                {
                    base.OnCellPainting(e);
                    return;
                }

                if (iNodeLevels == 1)
                {
                    base.OnCellPainting(e);
                    return;
                }

                //<EFBFBD>~6Rh<EFBFBD>4Y
                if (e.RowIndex == -1)
                {
                    if (_ColHeaderTreeView != null)
                    {
                        if (iNodeLevels == 0)
                        {
                            myNodeLevels();
                        }

                        PaintUnitHeader((TreeNode)this.ColLists[e.ColumnIndex], e, iNodeLevels);

                        e.Handled = true;
                    }
                    else
                    {
                        base.OnCellPainting(e);
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(this, ex.Message, "Error");
            }
        }
    }
}