圖形類（六）

//*************************************************************************************************
//完成日期： 2004-11-11
//作者：     何利民
//程序功能： 繪制矩形圖表
//*************************************************************************************************
using System;
using System.Drawing;
using System.Drawing.Text;
using System.Drawing.Imaging;
using System.ComponentModel;

namespace ImagesSpaceName
{

    public class DrawRectangle : RectangleClass
    {

        定義類變量#region  定義類變量

        protected ImagesSpaceName.Valign _pictureValign = ImagesSpaceName.Valign.top;    //圖片顯示垂直方向位置
        protected ImagesSpaceName.Align _pictureAlign = ImagesSpaceName.Align.center;    //圖片顯示橫向位置
        protected string _pictureTitle="冷風.net";        //圖片標題
        protected string _pictureTitleColor = "#000000";//圖片標題顏色
        protected int _pictureTitleSize = 14;            //圖片標題大小
        protected string _pictureTitleFamily="新細明體";//圖標標題名稱
        
        protected bool _smallShow = true;                //是否顯示右上角小矩形
        protected int _smallWidth = 20;                    //右上角小矩形的寬度
        protected int _smallHeight = 10;                //右上角小矩形的高度

        #endregion

        初使化購造函數#region 初使化購造函數

        public DrawRectangle()
        {
        }

        #endregion

        定義屬性#region 定義屬性

        [
        Bindable(true),
        Category("drawing"),
        DefaultValue(ImagesSpaceName.WaterTitle.bottom),
        Description("獲得或設置圖片標題顏色")
        ]
        public virtual string PictureTitleColor
        {
            get{return _pictureTitleColor;}
            set{_pictureTitleColor = value;}
        }

        [
        Bindable(true),
        Category("drawing"),
        DefaultValue(ImagesSpaceName.WaterTitle.bottom),
        Description("獲得或設置圖片標題字體名稱")
        ]
        public virtual string PictureTitleFamily
        {
            get{return _pictureTitleFamily;}
            set{_pictureTitleFamily = value;}
        }

        [
        Bindable(true),
        Category("drawing"),
        DefaultValue(ImagesSpaceName.WaterTitle.bottom),
        Description("獲得或設置圖片標題大小")
        ]
        public virtual int PictureTitleSize
        {
            get{return _pictureTitleSize;}
            set{_pictureTitleSize = value;}
        }

        [
        Bindable(true),
        Category("drawing"),
        DefaultValue(ImagesSpaceName.WaterTitle.bottom),
        Description("獲得或設置圖片顯示垂直方向位置")
        ]
        public ImagesSpaceName.Valign PictureValign
        {
            get{return _pictureValign;}
            set{_pictureValign = value;}
        }

        [
        Bindable(true),
        Category("drawing"),
        DefaultValue(ImagesSpaceName.WaterTitle.bottom),
        Description("獲得或設置圖片顯示橫向位置")
        ]
        public ImagesSpaceName.Align PictureAlign
        {
            get{return _pictureAlign;}
            set{_pictureAlign = value;}
        }

        [
        Bindable(true),
        Category("drawing"),
        DefaultValue(ImagesSpaceName.WaterTitle.bottom),
        Description("獲得或設置圖片的標題")
        ]
        public virtual string PictureTitle
        {
            get{return _pictureTitle;}
            set{_pictureTitle = value;}
        }

        [
        Bindable(true),
        Category("drawing"),
        DefaultValue(ImagesSpaceName.WaterTitle.bottom),
        Description("獲得或設置右上角小矩形的寬度")
        ]
        public virtual int SmallWidth
        {
            get{return _smallWidth;}
            set{_smallWidth = value;}
        }

        [
        Bindable(true),
        Category("drawing"),
        DefaultValue(ImagesSpaceName.WaterTitle.bottom),
        Description("獲得或設置右上角小矩形的高度")
        ]
        public virtual int SmallHeight
        {
            get{return _smallHeight;}
            set{_smallHeight = value;}
        }

        [
        Bindable(true),
        Category("drawing"),
        DefaultValue(ImagesSpaceName.WaterTitle.bottom),
        Description("獲得或設置右上角小矩形顯示與否")
        ]
        public virtual bool SmallShow
        {
            get{return _smallShow;}
            set{_smallShow = value;}
        }

        #endregion

        繪制右上角的小矩形#region 繪制右上角的小矩形

        private void DrawSmallRectangle(string[] arrayX)
        {
            Point pos = new Point(topRightDot.X-10,topRightDot.Y);    //取得基點
            Pen pen = new Pen(new SolidBrush(ColorTranslator.FromHtml(this.RectangleBorderColor)),this.RectangleBorderSize);
            Font font = new Font(this.XYFontFamily,this.XYFontSize);
            int posY = pos.Y;
            for(int i=0; i<arrayX.Length; i++)
            {
                graphics.DrawRectangle(pen,pos.X,posY,SmallWidth,SmallHeight);
                Color color;
                if(this.RectangleBgColor==null)
                    color = GetColor(i);
                else 
                    color = ColorTranslator.FromHtml(this.RectangleBgColor);
                graphics.FillRectangle(new SolidBrush(color),pos.X,posY,SmallWidth,SmallHeight);
                graphics.DrawString(arrayX[i],font,new SolidBrush(ColorTranslator.FromHtml(this.XYFontColor)),pos.X+SmallWidth+5,posY);
                posY += SmallHeight+20;
            }
        }

        #endregion

        繪制標題#region 繪制標題

        private void DrawTitle()
        {
            int x = 0;
            int y = 0;
            graphics.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
            Font font = new Font(PictureTitleFamily,PictureTitleSize);
            SizeF sizeF = graphics.MeasureString(PictureTitle,font);
            if(PictureValign==ImagesSpaceName.Valign.bottom)
                y = (int)Height- (int)sizeF.Height;
            if(PictureAlign==ImagesSpaceName.Align.center)
                x = ((int)Width-(int)sizeF.Width)/2;
            else if(PictureAlign==ImagesSpaceName.Align.right)
                x = (int)Width-(int)sizeF.Width;
            graphics.DrawString(PictureTitle,font,new SolidBrush(ColorTranslator.FromHtml(PictureTitleColor)),x,y);
        }

        #endregion

        繪圖#region 繪圖

        /**//// <summary>
        /// 繪制圖形
        /// </summary>
        /// <param name="arrayX">X軸數據數組</param>
        /// <param name="arrayY">Y軸數據數組</param>
        private void Drawing(string[] arrayX, int[] arrayY)
        {

            if(BgGround==null)
            {
                bitmap = new Bitmap((int)Width,(int)Height);
                graphics = Graphics.FromImage(bitmap);
                graphics.Clear(ColorTranslator.FromHtml(BgColor));
            }
            else
            {
                Bitmap bg;
                try
                {
                    bg = new Bitmap(BgGround);
                    if(BgGroundAlpha<250) bg = ImageAlpha(bg,ColorTranslator.FromHtml(BgColor),BgGroundAlpha);
                }
                catch
                {
                    throw new Exception("背景圖片地址不正確！");
                }
                bitmap = new Bitmap(bg,(int)Width,(int)Height);
                graphics = Graphics.FromImage(bitmap);
            }
            
            SetDrawArea();        //設置繪圖區
            DrawingRuler();        //顯示坐標
            DrawingGrid(arrayY);//繪制網格
            DrawTitle();        //繪制標題
            if(SmallShow) DrawSmallRectangle(arrayX);//繪制右上角的小矩形


            int iXlen = arrayX.Length;    //X軸上共有多少段
            int iX = (bottomRightDot.X - bottomLeftDot.X-10)/iXlen;    //X軸上每小段的寬度,其中10表箭頭多出的部份
            int iYlen = arrayY[0];        //Y軸上共有多少段
            for(int i=0; i<arrayY.Length; i++)
            {
                if(iYlen<arrayY[i]) iYlen = arrayY[i];
            }
            int iY = (bottomLeftDot.Y - topLeftDot.Y-10)/iYlen;        //Y軸上每小段的寬度,其中10表箭頭多出的部份
            
            //繪制X軸上的小段
            Pen pen = new Pen(new SolidBrush(ColorTranslator.FromHtml(XYColor)),XYSize);
            Font font = new Font(XYFontFamily,XYFontSize);
            for(int i=0; i<iXlen; i++)
            {
                Point x = new Point(bottomLeftDot.X +(i+1)*iX,bottomLeftDot.Y);
                graphics.DrawLine(pen,x,new Point(x.X,x.Y+5));    //繪制小段，其中5表小段的長度
                graphics.DrawString(arrayX[i],font,new SolidBrush(ColorTranslator.FromHtml(XYFontColor)),bottomLeftDot.X+i*iX+iX/4,bottomLeftDot.Y+5);
                //繪制矩形條
                this.RectangleWidth = iX/2;
                this.RectangleHeight = arrayY[i]*iY;
                this.RectangleTitle  = arrayY[i].ToString();
                Point posX = new Point(bottomLeftDot.X+i*iX+(iX-this.RectangleWidth)/2,bottomLeftDot.Y-this.RectangleHeight);
                Rectangle tang = new Rectangle(posX,new Size(this.RectangleWidth,this.RectangleHeight));
                Image img = Image.FromStream(this.DrawingRectangle(i));
                graphics.DrawImage(img,tang,0,0,this.RectangleWidth,this.RectangleHeight,GraphicsUnit.Pixel);
            }
            if(Alpha<250) bitmap = ImageAlpha(bitmap,ColorTranslator.FromHtml(BgColor),Alpha);
            this.SaveImage(bitmap,ImageFormat.Jpeg);
        }

        #endregion

        繪制矩形圖表 CreateRectangle#region 繪制矩形圖表 CreateRectangle

        /**//// <param name="arrayX">橫坐標數據</param>
        /// <param name="arrayY">昱坐標數據</param>
        public void CreateRectangle(string[] arrayX, int[] arrayY)
        {
            Drawing(arrayX,arrayY);
        }

        /**//// <param name="ht">哈希表</param>
        public void CreateRectangle(System.Collections.Hashtable ht)
        {
            try
            {
                int iMax = ht.Count;
                string[] arrayX = new string[iMax];
                int[] arrayY = new int[iMax];
                System.Collections.IDictionaryEnumerator myEnumerator = ht.GetEnumerator();
                int i = 0;
                while(myEnumerator.MoveNext())
                {
                    arrayX[i] = myEnumerator.Key.ToString();
                    arrayY[i] = (int)float.Parse(myEnumerator.Value.ToString());
                    i++;
                }
                Drawing(arrayX,arrayY);
            }
            catch
            {
                throw new Exception("提Hashtable中的數據不對!");
            }
        }

        /**//// <param name="table">數據表</param>
        /// <param name="x">X軸數據在數據表中的字段序號</param>
        /// <param name="y">Y軸數據在數據表中的字段序號</param>
        public void CreateRectangle(System.Data.DataTable table, int x, int y)
        {
            try
            {
                int iMax = table.Rows.Count;
                string[] arrayX = new string[iMax];
                int[] arrayY = new int[iMax];
                for(int i=0; i<iMax; i++)
                {
                    arrayX[i] = table.Rows[i][x].ToString();
                    arrayY[i] = (int)float.Parse(table.Rows[i][y].ToString());
                }
                Drawing(arrayX,arrayY);
            }
            catch
            {
                throw new Exception("提供數據表中的數據不對!");
            }
        }

        /**//// <param name="collection">集合</param>
        public void CreateRectangle(System.Collections.Specialized.NameValueCollection collection)
        {
            try
            {
                int iMax = collection.Count;
                string[] arrayX = new string[iMax];
                int[] arrayY = new int[iMax];
                for(int i=0; i<iMax; i++)
                {
                    arrayX[i] = collection.GetKey(i).ToString();
                    arrayY[i] = (int)float.Parse(collection.GetValues(i).ToString());
                }
                Drawing(arrayX,arrayY);
            }
            catch
            {
                throw new Exception("提供集合中的數據表不對!");
            }
        }
        #endregion

    }
}