圖形類（五）

//*************************************************************************************************
//完成日期： 2004-11-5
//作者：     何利民
//程序功能： 矩形類
//*************************************************************************************************
using System;
using System.Drawing;
using System.Drawing.Text;
using System.Drawing.Imaging;

namespace ImagesSpaceName
{
    /**//// <summary>
    /// 矩形類
    /// </summary>
    public class RectangleClass : ImageArea
    {
        
        定義類變量#region 定義類變量

        protected int _rectangleWidth = 100;                    //矩形寬
        protected int _rectangleHeight = 100;                    //矩形高
        protected string _rectangleBgColor = "#0000ff";            //矩形填充色
        protected string _rectangleBorderColor = "#ffffff";        //矩形邊框色
        protected int _rectangleBorderSize = 1;                    //矩形邊框大小
        protected string _rectangleTitle = null;                //矩形標題
        protected string _rectangleTitleColor = "#ff0000";        //矩形標題顏色
        protected int _rectangleTitleSize = 12;                    //矩形標題大小
        protected string _rectangleTitleFamily = "新細明體";    //矩形標題字體名稱
        protected bool    _showRectangleTitle = true;                //是否顯示標題
        protected ImagesSpaceName.Valign _rectangleTitleValign = ImagesSpaceName.Valign.middle;    //矩形標題對齊;
        
        #endregion

        類初使化構造函數#region 類初使化構造函數

        public RectangleClass()
        {
        }

        #endregion


        定義矩形屬性#region 定義矩形屬性

        /**//// <summary>
        /// 獲得或設置矩形寬
        /// </summary>
        public virtual int RectangleWidth
        {
            get{return _rectangleWidth;}
            set{_rectangleWidth = value;}
        }

        /**//// <summary>
        /// 獲得或設置矩形高
        /// </summary>
        public virtual int RectangleHeight
        {
            get{return _rectangleHeight;}
            set{_rectangleHeight = value;}
        }

        /**//// <summary>
        /// 獲得或設置矩形填充色
        /// </summary>
        public virtual string RectangleBgColor
        {
            get{return _rectangleBgColor;}
            set{_rectangleBgColor = value;}
        }

        /**//// <summary>
        /// 獲得或設置矩形邊框色
        /// </summary>
        public virtual string RectangleBorderColor
        {
            get{return _rectangleBorderColor;}
            set{_rectangleBorderColor = value;}
        }

        /**//// <summary>
        /// 獲得或設置矩形邊框大小
        /// </summary>
        public virtual int RectangleBorderSize
        {
            get{return _rectangleBorderSize;}
            set{_rectangleBorderSize = value;}
        }

        /**//// <summary>
        /// 獲得或設置矩形標題
        /// </summary>
        public virtual string RectangleTitle
        {
            get{return _rectangleTitle;}
            set{_rectangleTitle = value;}
        }

        /**//// <summary>
        /// 矩形標題字體顏色
        /// </summary>
        public virtual string RectangleTitleColor
        {
            get{return _rectangleTitleColor;}
            set{_rectangleTitleColor = value;}
        }

        /**//// <summary>
        /// 矩形標題字體大小
        /// </summary>
        public virtual int RectangleTitleSize
        {
            get{return _rectangleTitleSize;}
            set{_rectangleTitleSize = value;}
        }

        /**//// <summary>
        /// 矩形標題字體名稱
        /// </summary>
        public virtual string RectangleTitleFamily
        {
            get{return _rectangleTitleFamily;}
            set{_rectangleTitleFamily = value;}
        }    

        /**//// <summary>
        /// 獲得或設置矩形標題的垂直對齊方式
        /// </summary>
        public virtual ImagesSpaceName.Valign RectangleTitleValign
        {
            get{return _rectangleTitleValign;}
            set{_rectangleTitleValign = value;}
        }

        /**//// <summary>
        /// 顯示矩形標題
        /// </summary>
        public virtual bool ShowRectangleTitle
        {
            get{return _showRectangleTitle;}
            set{_showRectangleTitle = value;}
        }

        #endregion

        繪制矩形#region 繪制矩形

        public virtual System.IO.Stream DrawingRectangle(int ColorId)
        {
            if(ShowRectangleTitle) RectangleHeight=RectangleHeight+20;
            Bitmap bitmap = new Bitmap(RectangleWidth,RectangleHeight);
            Graphics graphics = Graphics.FromImage(bitmap);
            graphics.Clear(Color.White);
            Brush brush = new SolidBrush(ColorTranslator.FromHtml(RectangleBorderColor));
            Pen pen = new Pen(brush,RectangleBorderSize);
            int iTop = 0;
            if(RectangleTitleValign==ImagesSpaceName.Valign.top) iTop = 20;
            graphics.DrawRectangle(pen,0,iTop,RectangleWidth,RectangleHeight);
            Color color;
            if(this.RectangleBgColor==null)
            {
                color = GetColor(ColorId);
            }
            else 
                color = ColorTranslator.FromHtml(this.RectangleBgColor);
            graphics.FillRectangle(new SolidBrush(color),0,iTop,RectangleWidth,RectangleHeight);
            
            if(ShowRectangleTitle)
            {
                Font font = new Font(RectangleTitleFamily,RectangleTitleSize);
                graphics.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
                SizeF sizeF = graphics.MeasureString(RectangleTitle,font);
                int iWidth = (RectangleWidth-(int)sizeF.Width)/2;
                int iHeight = (RectangleHeight-(int)sizeF.Height)/2;
                if(RectangleTitleValign==ImagesSpaceName.Valign.top) iHeight = 0;
                graphics.DrawString(RectangleTitle,font,new SolidBrush(ColorTranslator.FromHtml(RectangleTitleColor)),iWidth,iHeight);
            }

            System.IO.Stream streamimg = new System.IO.MemoryStream();
            bitmap.Save(streamimg,ImageFormat.Jpeg);
            bitmap.Dispose();
            graphics.Dispose();
            return streamimg;
        }
        #endregion

    }
}