[C#/WINFORM] 햇살(Sunburst) 차트에서 마우스 아래 섹션 찾기

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TestProject.zip

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▶ Wedge.cs

using System.Drawing;
using System.Drawing.Drawing2D;

namespace TestProject
{
    /// <summary>
    /// 웻지
    /// </summary>
    public class Wedge
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Field
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region Field

        /// <summary>
        /// 그래픽스 패스
        /// </summary>
        public GraphicsPath Path;

        /// <summary>
        /// 전경색
        /// </summary>
        public Color ForegroundColor;
        
        /// <summary>
        /// 배경색
        /// </summary>
        public Color BackgroundColor;

        /// <summary>
        /// 텍스트
        /// </summary>
        public string Text;

        /// <summary>
        /// 숨김 여부
        /// </summary>
        public bool IsHidden;

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - Wedge(path, foregroundColor, backgroundColor, text, isHidden)

        /// <summary>
        /// 생성자
        /// </summary>
        /// <param name="path">그래픽스 패스</param>
        /// <param name="foregroundColor">전경색</param>
        /// <param name="backgroundColor">배경색</param>
        /// <param name="text">텍스트</param>
        /// <param name="isHidden">숨김 여부</param>
        public Wedge(GraphicsPath path, Color foregroundColor, Color backgroundColor, string text, bool isHidden)
        {
            Path            = path;
            ForegroundColor = foregroundColor;
            BackgroundColor = backgroundColor;
            Text            = text;
            IsHidden        = isHidden;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 포인트 포함 여부 구하기 - ContainsPoint(point)

        /// <summary>
        /// 포인트 포함 여부 구하기
        /// </summary>
        /// <param name="point">포인트</param>
        /// <returns>포인트 포함 여부</returns>
        public bool ContainsPoint(Point point)
        {
            return Path.IsVisible(point);
        }

        #endregion
        #region 문자열 구하기 - ToString()

        /// <summary>
        /// 문자열 구하기
        /// </summary>
        /// <returns>문자열</returns>
        public override string ToString()
        {
            return Text;
        }

        #endregion
    }
}

 

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▶ MainForm.cs

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Text;
using System.Linq;
using System.Windows.Forms;
using System.Xml;

namespace TestProject
{
    /// <summary>
    /// 메인 폼
    /// </summary>
    public partial class MainForm : Form
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Field
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Field

        /// <summary>
        /// XML 문서
        /// </summary>
        private XmlDocument xmlDocument = new XmlDocument();

        /// <summary>
        /// 웻지 리스트
        /// </summary>
        private List<Wedge> wedgeList = null;

        /// <summary>
        /// 마우스 아래 웻지
        /// </summary>
        private Wedge wedgeUnderMouse = null;

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainForm()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainForm()
        {
            InitializeComponent();

            Load                      += Form_Load;
            Resize                    += Form_Resize;
            this.pictureBox.MouseMove += pictureBox_MouseMove;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private
        //////////////////////////////////////////////////////////////////////////////// Event

        #region 폼 로드시 처리하기 - Form_Load(sender, e)

        /// <summary>
        /// 폼 로드시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void Form_Load(object sender, EventArgs e)
        {
            this.xmlDocument.Load("test.xml");

            LoadTreeViewData(this.xmlDocument, treeView);

            this.treeView.ExpandAll();

            SetSunburstChart();
        }

        #endregion
        #region 폼 크기 변경시 처리하기 - Form_Resize(sender, e)

        /// <summary>
        /// 폼 크기 변경시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void Form_Resize(object sender, EventArgs e)
        {
            SetSunburstChart();
        }

        #endregion
        #region 픽처 박스 마우스 이동시 처리하기 - pictureBox_MouseMove(sender, e)

        /// <summary>
        /// 픽처 박스 마우스 이동시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void pictureBox_MouseMove(object sender, MouseEventArgs e)
        {
            foreach(Wedge wedge in this.wedgeList)
            {
                if(wedge.ContainsPoint(e.Location))
                {
                    DisplayWedgeInformation(wedge);

                    return;
                }
            }

            DisplayWedgeInformation(null);
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////// Function

        #region 트리 뷰 노드 추가하기 - AddTreeViewNode(parentNodeCollection, node)

        /// <summary>
        /// 트리 뷰 노드 추가하기
        /// </summary>
        /// <param name="parentNodeCollection">부모 노드 컬렉션</param>
        /// <param name="node">노드</param>
        private void AddTreeViewNode(TreeNodeCollection parentNodeCollection, XmlNode node)
        {
            TreeNode newNode = parentNodeCollection.Add(node.Name);

            foreach(XmlNode childNode in node.ChildNodes)
            {
                AddTreeViewNode(newNode.Nodes, childNode);
            }
        }

        #endregion
        #region 트리 뷰 데이터 로드하기 - LoadTreeViewData(document, treeView)

        /// <summary>
        /// 트리 뷰 데이터 로드하기
        /// </summary>
        /// <param name="document">XML 문서</param>
        /// <param name="treeView">트리 뷰</param>
        private void LoadTreeViewData(XmlDocument document, TreeView treeView)
        {
            treeView.Nodes.Clear();

            AddTreeViewNode(treeView.Nodes, document.DocumentElement);
        }

        #endregion
        #region 깊이 구하기 - FindDepth(node)

        /// <summary>
        /// 깊이 구하기
        /// </summary>
        /// <param name="node">노드</param>
        /// <returns>깊이</returns>
        private int FindDepth(XmlNode node)
        {
            int depth = 1;

            foreach(XmlNode childNode in node.ChildNodes)
            {
                int childDepth = FindDepth(childNode);

                if(depth < 1 + childDepth)
                {
                    depth = 1 + childDepth;
                }
            }

            return depth;
        }

        #endregion
        #region 노드 색상 구하기 - GetNodeColor(node, colorName, defaultColor)

        /// <summary>
        /// 노드 색상 구하기
        /// </summary>
        /// <param name="node">노드</param>
        /// <param name="colorName">색상명</param>
        /// <param name="defaultColor">디폴트 색상</param>
        /// <returns>노드 색상</returns>
        private Color GetNodeColor(XmlNode node, string colorName, Color defaultColor)
        {
            if(node.Attributes[colorName] == null)
            {
                return defaultColor;
            }

            try
            {
                return Color.FromName(node.Attributes[colorName].Value);
            }
            catch
            {
                return defaultColor;
            }
        }

        #endregion
        #region 숨김 여부 구하기 - IsHidden(node)

        /// <summary>
        /// 숨김 여부 구하기
        /// </summary>
        /// <param name="node">노드</param>
        /// <returns>숨김 여부</returns>
        private bool IsHidden(XmlNode node)
        {
            if(node.Attributes["IsHidden"] == null)
            {
                return false;
            }

            return (bool.Parse(node.Attributes["IsHidden"].Value));
        }

        #endregion
        #region 중앙 정렬 텍스트 그리기 - DrawCenteredText(graphics, font, brush, text, centerPoint, angle)

        /// <summary>
        /// 중앙 정렬 텍스트 그리기
        /// </summary>
        /// <param name="graphics">그래픽스</param>
        /// <param name="font">폰트</param>
        /// <param name="brush">브러시</param>
        /// <param name="text">텍스트</param>
        /// <param name="centerPoint">중심 포인트</param>
        /// <param name="angle">각도</param>
        private void DrawCenteredText(Graphics graphics, Font font, Brush brush, string text, PointF centerPoint, float angle)
        {
            graphics.RotateTransform(angle);

            graphics.TranslateTransform(centerPoint.X, centerPoint.Y, MatrixOrder.Append);

            using(StringFormat stringFormat = new StringFormat())
            {
                stringFormat.LineAlignment = StringAlignment.Center;

                graphics.DrawString(text, font, brush, 0, 0, stringFormat);
            }

            graphics.ResetTransform();
        }

        #endregion
        #region 호 위에 텍스트 그리기 - DrawTextOnArc(graphics, brush, font, text, centerX, centerY,
            minimumTheta, maximumTheta, radius)

        /// <summary>
        /// 호 위에 텍스트 그리기
        /// </summary>
        /// <param name="graphics">그래픽스</param>
        /// <param name="brush">브러시</param>
        /// <param name="font">폰트</param>
        /// <param name="text">텍스트</param>
        /// <param name="centerX">중심 X</param>
        /// <param name="centerY">중심 Y</param>
        /// <param name="minimumTheta">최소 세타</param>
        /// <param name="maximumTheta">최대 세타</param>
        /// <param name="radius">반경</param>
        private void DrawTextOnArc
        (
            Graphics graphics,
            Brush    brush,
            Font     font,
            string   text,
            float    centerX,
            float    centerY,
            double   minimumTheta,
            double   maximumTheta,
            float    radius
        )
        {
            if(text.Length > 32)
            {
                text = text.Substring(0, 32);
            }

            List<CharacterRange> characterRangeList = new List<CharacterRange>();

            for(int i = 0; i < text.Length; i++)
            {
                characterRangeList.Add(new CharacterRange(i, 1));
            }

            using(StringFormat stringFormat = new StringFormat())
            {
                stringFormat.SetMeasurableCharacterRanges(characterRangeList.ToArray());

                RectangleF rectangle = new RectangleF(0, 0, 1000, 1000);

                Region[] regionArray = graphics.MeasureCharacterRanges(text, font, rectangle, stringFormat);

                float totalWidth = regionArray.Sum(region => region.GetBounds(graphics).Width);

                double totalTheta = totalWidth / radius;

                double startTheta = (minimumTheta + maximumTheta - totalTheta) / 2;

                double thetaPerWidth = totalTheta / totalWidth;
                
                for(int i = 0; i < regionArray.Length; i++)
                {
                    float x = (float)(centerX + radius * Math.Cos(startTheta));
                    float y = (float)(centerY + radius * Math.Sin(startTheta));

                    float angle = (float)(startTheta / Math.PI * 180 + 90);

                    PointF point = new PointF(x, y);

                    DrawCenteredText
                    (
                        graphics,
                        font,
                        brush,
                        text[i].ToString(),
                        point,
                        angle
                    );

                    startTheta += thetaPerWidth * regionArray[i].GetBounds(graphics).Width;
                }
            }
        }

        #endregion
        #region 웻지에서 노드 텍스트 그리기 - DrawNodeTextInWedge(graphics, brush, font, text, centerX, centerY,
            minimumTheta, maximumTheta, middleRadius)

        /// <summary>
        /// 웻지에서 노드 텍스트 그리기
        /// </summary>
        /// <param name="graphics">그래픽스</param>
        /// <param name="brush">브러시</param>
        /// <param name="font">폰트</param>
        /// <param name="text">텍스트</param>
        /// <param name="centerX">중심 X</param>
        /// <param name="centerY">중심 Y</param>
        /// <param name="minimumTheta">최소 세타</param>
        /// <param name="maximumTheta">최대 세타</param>
        /// <param name="middleRadius">중간 반경</param>
        private void DrawNodeTextInWedge
        (
            Graphics graphics,
            Brush    brush,
            Font     font,
            string   text,
            float    centerX,
            float    centerY,
            double   minimumTheta,
            double   maximumTheta,
            float    middleRadius
        )
        {
            string[] separatorArray = { @"\n" };

            string[] lineArray = text.Split(separatorArray, StringSplitOptions.None);

            float height = font.Height * 0.8f;

            float minimumRadius = middleRadius  - (lineArray.Length - 1) * height / 2f;
            float maximumRadius = minimumRadius + (lineArray.Length - 1) * height;

            float deltaRadius = (maximumRadius - minimumRadius) / (float)(lineArray.Length - 1);

            float radius = maximumRadius;

            for(int i = 0; i < lineArray.Length; i++)
            {
                DrawTextOnArc
                (
                    graphics,
                    brush,
                    font,
                    lineArray[i],
                    centerX,
                    centerY,
                    minimumTheta,
                    maximumTheta,
                    radius
                );

                radius -= deltaRadius;
            }
        }

        #endregion
        #region 햇살 자식 그리기 - DrawSunburstChild(graphics, centerX, centerY, deltaRoot, level, node,
            minimumAngle, maximumAngle, font, defaultBackgroundColor, defaultForegroundColor, backgroundColor,
            foregroundColor, wedgeList)

        /// <summary>
        /// 햇살 자식 그리기
        /// </summary>
        /// <param name="graphics">그래픽스</param>
        /// <param name="centerX">중심 X</param>
        /// <param name="centerY">중심 Y</param>
        /// <param name="deltaRoot">델타 루트</param>
        /// <param name="level">레벨</param>
        /// <param name="node">노드</param>
        /// <param name="minimumAngle">최소 각도</param>
        /// <param name="maximumAngle">최대 각도</param>
        /// <param name="font">폰트</param>
        /// <param name="defaultBackgroundColor">디폴트 배경색</param>
        /// <param name="defaultForegroundColor">디폴트 전경색</param>
        /// <param name="backgroundColor">배경색</param>
        /// <param name="foregroundColor">전경색</param>
        /// <param name="wedgeList">웻지 리스트</param>
        private void DrawSunburstChild
        (
            Graphics        graphics,
            float           centerX,
            float           centerY,
            float           deltaRoot,
            int             level,
            XmlNode         node,
            float           minimumAngle,
            float           maximumAngle,
            Font            font,
            Color           defaultBackgroundColor,
            Color           defaultForegroundColor,
            out Color       backgroundColor,
            out Color       foregroundColor,
            ref List<Wedge> wedgeList
        )
        {
            double minimumTheta = minimumAngle / 180f * Math.PI;
            double maximumTheta = maximumAngle / 180f * Math.PI;

            float innerRadius = level * deltaRoot;
            float outerRadius = innerRadius + deltaRoot;

            RectangleF outerRectangle = new RectangleF
            (
                centerX - outerRadius,
                centerY - outerRadius,
                2 * outerRadius,
                2 * outerRadius
            );

            RectangleF innerRectangle = new RectangleF
            (
                centerX - innerRadius,
                centerY - innerRadius,
                2 * innerRadius,
                2 * innerRadius
            );

            float innerMinimumX = (float)(centerX + innerRadius * Math.Cos(minimumTheta));
            float innerMinimumY = (float)(centerY + innerRadius * Math.Sin(minimumTheta));
            float outerMinimumX = (float)(centerX + outerRadius * Math.Cos(minimumTheta));
            float outerMinimumY = (float)(centerY + outerRadius * Math.Sin(minimumTheta));

            float innerMaximumX = (float)(centerX + innerRadius * Math.Cos(maximumTheta));
            float innerMaximumY = (float)(centerY + innerRadius * Math.Sin(maximumTheta));
            float outerMaximumX = (float)(centerX + outerRadius * Math.Cos(maximumTheta));
            float outerMaximumY = (float)(centerY + outerRadius * Math.Sin(maximumTheta));

            GraphicsPath path = new GraphicsPath();

            path.AddArc (outerRectangle, minimumAngle, maximumAngle - minimumAngle);

            path.AddLine(outerMaximumX, outerMaximumY, innerMaximumX, innerMaximumY);

            path.AddArc (innerRectangle, maximumAngle, minimumAngle - maximumAngle);

            path.AddLine(innerMinimumX, innerMinimumY, outerMinimumX, outerMinimumY);

            path.CloseFigure();

            bool isHidden = IsHidden(node);

            backgroundColor = GetNodeColor(node, "BgColor", defaultBackgroundColor);

            if(!isHidden)
            {
                using(Brush brush = new SolidBrush(backgroundColor))
                {
                    graphics.FillPath(brush, path);
                }

                graphics.DrawPath(Pens.Black, path);
            }

            string text = node.Name;

            if(node.Attributes["Text"] != null)
            {
                text = node.Attributes["Text"].Value;
            }

            float middleRadius = (innerRadius + outerRadius) / 2;

            foregroundColor = GetNodeColor(node, "FgColor", defaultForegroundColor);

            if(!isHidden)
            {
                using(Brush brush = new SolidBrush(foregroundColor))
                {
                    DrawNodeTextInWedge
                    (
                        graphics,
                        brush,
                        font,
                        text,
                        centerX,
                        centerY,
                        minimumTheta,
                        maximumTheta,
                        middleRadius
                    );
                }
            }

            wedgeList.Add(new Wedge(path, foregroundColor, backgroundColor, text, isHidden));
        }

        #endregion
        #region 햇살 자식 그리기 - DrawSunburstChildren(graphics, centerX, centerY, deltaRoot, level, childNodeList,
            minimumAngle, maximumAngle, font, parentBackgroundColor, parentForegroundColor, wedgeList)

        /// <summary>
        /// 햇살 자식 그리기
        /// </summary>
        /// <param name="graphics">그래픽스</param>
        /// <param name="centerX">중심 X</param>
        /// <param name="centerY">중심 Y</param>
        /// <param name="deltaRoot">델타 루트</param>
        /// <param name="level">레벨</param>
        /// <param name="childNodeList">자식 노드 리스트</param>
        /// <param name="minimumAngle">최소 각도</param>
        /// <param name="maximumAngle">최대 각도</param>
        /// <param name="font">폰트</param>
        /// <param name="parentBackgroundColor">부모 배경색</param>
        /// <param name="parentForegroundColor">부모 전경색</param>
        /// <param name="wedgeList">웻지 리스트</param>
        private void DrawSunburstChildren
        (
            Graphics        graphics,
            float           centerX,
            float           centerY,
            float           deltaRoot,
            int             level,
            XmlNodeList     childNodeList,
            float           minimumAngle,
            float           maximumAngle,
            Font            font,
            Color           parentBackgroundColor,
            Color           parentForegroundColor,
            ref List<Wedge> wedgeList
        )
        {
            int childNodeCount = childNodeList.Count;

            float angle      = minimumAngle;
            float deltaAngle = (maximumAngle - minimumAngle) / childNodeCount;

            foreach(XmlNode childNode in childNodeList)
            {
                Color childBackgroundColor;
                Color childForegroundColor;

                DrawSunburstChild
                (
                    graphics,
                    centerX,
                    centerY,
                    deltaRoot,
                    level,
                    childNode,
                    angle,
                    angle + deltaAngle,
                    font,
                    parentBackgroundColor,
                    parentForegroundColor,
                    out childBackgroundColor,
                    out childForegroundColor,
                    ref wedgeList
                );

                DrawSunburstChildren
                (
                    graphics,
                    centerX,
                    centerY,
                    deltaRoot,
                    level + 1,
                    childNode.ChildNodes,
                    angle,
                    angle + deltaAngle,
                    font,
                    childBackgroundColor,
                    childForegroundColor,
                    ref wedgeList
                );

                angle = angle + deltaAngle;
            }
        }

        #endregion        
        #region 햇살 차트 이미지 구하기 - GetSunburstChartImage(width, height, margin, xmlDocument,
            backgroundColor, arcPen, font, wedgeList)

        /// <summary>
        /// 햇살 차트 이미지 구하기
        /// </summary>
        /// <param name="width">너비</param>
        /// <param name="height">높이</param>
        /// <param name="margin">마진</param>
        /// <param name="xmlDocument">XML 문서</param>
        /// <param name="backgroundColor">배경색</param>
        /// <param name="arcPen">호 펜</param>
        /// <param name="font">폰트</param>
        /// <param name="wedgeList">웻지 리스트</param>
        /// <returns>햇살 차트 이미지</returns>
        private Bitmap GetSunburstChartImage
        (
            int             width,
            int             height,
            int             margin,
            XmlDocument     xmlDocument,
            Color           backgroundColor,
            Pen             arcPen,
            Font            font,
            ref List<Wedge> wedgeList
        )
        {
            Bitmap bitmap = new Bitmap(width, height);

            using(Graphics graphics = Graphics.FromImage(bitmap))
            {
                graphics.Clear(backgroundColor);

                graphics.SmoothingMode     = SmoothingMode.AntiAlias;
                graphics.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;

                int depth = FindDepth(xmlDocument.DocumentElement);

                float centerX = width  / 2f;
                float centerY = height / 2f;

                width  -= 2 * margin;
                height -= 2 * margin;

                float deltaRoot = (Math.Min(width, height) / 2f / depth);

                RectangleF rootRectangle = new RectangleF
                (
                    centerX - deltaRoot,
                    centerY - deltaRoot,
                    2 * deltaRoot,
                    2 * deltaRoot
                );

                Color backgroundNodeColor = GetNodeColor
                (
                    this.xmlDocument.DocumentElement,
                    "BgColor",
                    Color.Transparent
                );

                using(Brush brush = new SolidBrush(backgroundNodeColor))
                {
                    graphics.FillEllipse(brush, rootRectangle);
                }

                graphics.DrawEllipse(arcPen, rootRectangle);

                Color foregroundNodeColor = GetNodeColor
                (
                    this.xmlDocument.DocumentElement,
                    "FgColor",
                    Color.Black
                );

                using(Brush brush = new SolidBrush(foregroundNodeColor))
                {
                    using(StringFormat stringFormat = new StringFormat())
                    {
                        stringFormat.Alignment     = StringAlignment.Center;
                        stringFormat.LineAlignment = StringAlignment.Center;

                        graphics.DrawString
                        (
                            this.xmlDocument.DocumentElement.Name,
                            font,
                            brush,
                            centerX,
                            centerY,
                            stringFormat
                        );
                    }
                }

                GraphicsPath path = new GraphicsPath();

                path.AddEllipse(rootRectangle);

                wedgeList.Add
                (
                    new Wedge
                    (
                        path,
                        foregroundNodeColor,
                        backgroundNodeColor,
                        this.xmlDocument.DocumentElement.Name,
                        IsHidden(this.xmlDocument.DocumentElement)
                    )
                );

                DrawSunburstChildren
                (
                    graphics,
                    centerX,
                    centerY,
                    deltaRoot,
                    1,
                    this.xmlDocument.DocumentElement.ChildNodes,
                    0,
                    360,
                    font,
                    backgroundNodeColor,
                    foregroundNodeColor,
                    ref wedgeList
                );
            }

            return bitmap;
        }

        #endregion
        #region 햇살 차트 설정하기 - SetSunburstChart()

        /// <summary>
        /// 햇살 차트 설정하기
        /// </summary>
        private void SetSunburstChart()
        {
            this.wedgeList = new List<Wedge>();

            using(Font font = new Font("나눔고딕코딩", 12, FontStyle.Bold))
            {
                this.pictureBox.Image = GetSunburstChartImage
                (
                    this.pictureBox.ClientSize.Width,
                    this.pictureBox.ClientSize.Height,
                    4,
                    this.xmlDocument,
                    Color.White,
                    Pens.Blue,
                    font,
                    ref this.wedgeList
                );
            }
        }

        #endregion
        #region 웻지 정보 표시하기 - DisplayWedgeInformation(wedge)

        /// <summary>
        /// 웻지 정보 표시하기
        /// </summary>
        /// <param name="wedge">웻지</param>
        private void DisplayWedgeInformation(Wedge wedge)
        {
            if(wedge == this.wedgeUnderMouse)
            {
                return;
            }

            this.wedgeUnderMouse = wedge;

            if((wedge == null) || (wedge.IsHidden))
            {
                this.wedgeUnderMouseLabel.Text = string.Empty;
            }
            else
            {
                this.wedgeUnderMouseLabel.Text = wedge.Text.Replace("\\n", " ");
            }
        }

        #endregion
    }
}

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