■ 링크 가중치를 표시하는 제네릭 타입 트리를 사용하는 방법을 보여준다.
▶ ITreeNode.cs
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using System.Drawing; namespace TestProject { /// <summary> /// 트리 노드 인터페이스 /// </summary> public interface ITreeNode { //////////////////////////////////////////////////////////////////////////////////////////////////// Method #region 크기 구하기 - GetSize(graphics, font) /// <summary> /// 크기 구하기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="font">폰트</param> /// <returns>크기</returns> SizeF GetSize(Graphics graphics, Font font); #endregion #region 포인트 위치 여부 구하기 - IsAtPoint(graphics, font, centerPoint, targetPoint) /// <summary> /// 포인트 위치 여부 구하기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="font">폰트</param> /// <param name="centerPoint">중심 포인트</param> /// <param name="targetPoint">타겟 포인트</param> /// <returns>포인트 위치 여부</returns> bool IsAtPoint(Graphics graphics, Font font, PointF centerPoint, PointF targetPoint); #endregion #region 그리기 - Draw(x, y, graphics, pen, backgroundBrush, textBrush, font) /// <summary> /// 그리기 /// </summary> /// <param name="x">X 좌표</param> /// <param name="y">Y 좌표</param> /// <param name="graphics">그래픽스</param> /// <param name="pen">펜</param> /// <param name="backgroundBrush">배경 브러시</param> /// <param name="textBrush">텍스트 브러시</param> /// <param name="font">폰트</param> void Draw(float x, float y, Graphics graphics, Pen pen, Brush backgroundBrush, Brush textBrush, Font font); #endregion } } |
▶ CircleNode.cs
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using System.Drawing; namespace TestProject { /// <summary> /// 원 노드 /// </summary> public class CircleNode : ITreeNode { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// 텍스트 /// </summary> public string Text; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Consturctor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - CircleNode(text) /// <summary> /// 생성자 /// </summary> /// <param name="text">텍스트</param> public CircleNode(string text) { Text = text; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 크기 구하기 - GetSize(graphics, font) /// <summary> /// 크기 구하기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="font">폰트</param> /// <returns>크기</returns> public SizeF GetSize(Graphics graphics, Font font) { return graphics.MeasureString(Text, font) + new SizeF(10, 10); } #endregion #region 포인트 위치 여부 구하기 - IsAtPoint(graphics, font, centerPoint, targetPoint) /// <summary> /// 포인트 위치 여부 구하기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="font">폰트</param> /// <param name="centerPoint">중심 포인트</param> /// <param name="targetPoint">타겟 포인트</param> /// <returns>포인트 위치 여부</returns> public bool IsAtPoint(Graphics graphics, Font font, PointF centerPoint, PointF targetPoint) { SizeF size = GetSize(graphics, font); targetPoint.X -= centerPoint.X; targetPoint.Y -= centerPoint.Y; float halfWidth = size.Width / 2; float halfHeight = size.Height / 2; return targetPoint.X * targetPoint.X / halfWidth / halfWidth + targetPoint.Y * targetPoint.Y / halfHeight / halfHeight <= 1; } #endregion #region 그리기 - Draw(x, y, graphics, pen, backgroundBrush, textBrush, font) /// <summary> /// 그리기 /// </summary> /// <param name="x">X 좌표</param> /// <param name="y">Y 좌표</param> /// <param name="graphics">그래픽스</param> /// <param name="pen">펜</param> /// <param name="backgroundBrush">배경 브러시</param> /// <param name="textBrush">텍스트 브러시</param> /// <param name="font">폰트</param> public void Draw(float x, float y, Graphics graphics, Pen pen, Brush backgroundBrush, Brush textBrush, Font font) { SizeF size = GetSize(graphics, font); RectangleF rectangle = new RectangleF ( x - size.Width / 2, y - size.Height / 2, size.Width, size.Height ); graphics.FillEllipse(backgroundBrush, rectangle); graphics.DrawEllipse(pen, rectangle); using(StringFormat stringFormat = new StringFormat()) { stringFormat.Alignment = StringAlignment.Center; stringFormat.LineAlignment = StringAlignment.Center; graphics.DrawString(Text, font, textBrush, x, y, stringFormat); } } #endregion } } |
▶ TreeNode.cs
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using System.Collections.Generic; using System.Drawing; namespace TestProject { /// <summary> /// 트리 노드 /// </summary> /// <typeparam name="TData">데이터 타입</typeparam> public class TreeNode<TData> where TData : ITreeNode { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// 데이터 /// </summary> public TData Data; /// <summary> /// 링크 가중치 /// </summary> public int LinkWeight; /// <summary> /// 자식 노드 리스트 /// </summary> public List<TreeNode<TData>> ChildNodeList = new List<TreeNode<TData>>(); /// <summary> /// 폰트 /// </summary> public Font Font = null; /// <summary> /// 펜 /// </summary> public Pen Pen = Pens.Black; /// <summary> /// 폰트 브러시 /// </summary> public Brush FontBrush = Brushes.Black; /// <summary> /// 링크 가중치 브러시 /// </summary> public Brush LinkWeightBrush = Brushes.Red; /// <summary> /// 링크 가중치 폰트 /// </summary> public Font LinkWeightFont = null; /// <summary> /// 배경 브러시 /// </summary> public Brush BackgroundBrush = Brushes.White; /// <summary> /// 가중치 배경 브러시 /// </summary> public Brush WeightBackgroundBrush = SystemBrushes.Control; /// <summary> /// 중심 포인트 /// </summary> public PointF CenterPoint; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 수평 오프셋 /// </summary> private const float HORIZONTAL_OFFSET = 30; /// <summary> /// 수직 오프셋 /// </summary> private const float VERTICAL_OFFSET = 30; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - TreeNode(data, linkWeight, font, linkWeightFont) /// <summary> /// 생성자 /// </summary> /// <param name="data">데이터</param> /// <param name="linkWeight">링크 가중치</param> /// <param name="font">폰트</param> /// <param name="linkWeightFont">링크 가중치 폰트</param> public TreeNode(TData data, int linkWeight, Font font, Font linkWeightFont) { Data = data; LinkWeight = linkWeight; Font = font; LinkWeightFont = linkWeightFont; } #endregion #region 생성자 - TreeNode(data, linkWeight) /// <summary> /// 생성자 /// </summary> /// <param name="data">데이터</param> /// <param name="linkWeight">링크 가중치</param> public TreeNode(TData data, int linkWeight) : this(data, linkWeight, new Font("나눔고딕코딩", 12), new Font("나눔고딕코딩", 12)) { } #endregion #region 생성자 - TreeNode(data) /// <summary> /// 생성자 /// </summary> /// <param name="data">데이터</param> public TreeNode(TData data) : this(data, int.MinValue) { } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 자식 추가하기 - AddChild(childNode, linkWeight) /// <summary> /// 자식 추가하기 /// </summary> /// <param name="childNode">자식 노드</param> /// <param name="linkWeight">링크 가중치</param> public void AddChild(TreeNode<TData> childNode, int linkWeight) { ChildNodeList.Add(childNode); childNode.LinkWeight = linkWeight; } #endregion #region 자식 추가하기 - AddChild(childNode) /// <summary> /// 자식 추가하기 /// </summary> /// <param name="childNode">자식 노드</param> public void AddChild(TreeNode<TData> childNode) { AddChild(childNode, int.MinValue); } #endregion #region 배열하기 - Arrange(graphics, minimumX, minimumY) /// <summary> /// 배열하기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="minimumX">X 최소값</param> /// <param name="minimumY">Y 최소값</param> public void Arrange(Graphics graphics, ref float minimumX, ref float minimumY) { SizeF size = Data.GetSize(graphics, Font); float x = minimumX; float biggestMinimumY = minimumY + size.Height; float childTreeMinimumY = minimumY + size.Height + VERTICAL_OFFSET; foreach(TreeNode<TData> childNode in ChildNodeList) { float childMinimumY = childTreeMinimumY; childNode.Arrange(graphics, ref x, ref childMinimumY); if(biggestMinimumY < childMinimumY) { biggestMinimumY = childMinimumY; } x += HORIZONTAL_OFFSET; } if(ChildNodeList.Count > 0) { x -= HORIZONTAL_OFFSET; } float childTreeWidth = x - minimumX; if(size.Width > childTreeWidth) { x = minimumX + (size.Width - childTreeWidth) / 2; foreach(TreeNode<TData> childNode in ChildNodeList) { childNode.Arrange(graphics, ref x, ref childTreeMinimumY); x += HORIZONTAL_OFFSET; } childTreeWidth = size.Width; } CenterPoint = new PointF ( minimumX + childTreeWidth / 2, minimumY + size.Height / 2 ); minimumX += childTreeWidth; minimumY = biggestMinimumY; } #endregion #region 트리 그리기 - DrawTree(graphics) /// <summary> /// 트리 그리기 /// </summary> /// <param name="graphics">그래픽스</param> public void DrawTree(Graphics graphics) { DrawChildNodeLink(graphics); DrawChildNode(graphics); } #endregion #region 트리 그리기 - DrawTree(graphics, x, y) /// <summary> /// 트리 그리기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="x">X 좌표</param> /// <param name="y">y 좌표</param> public void DrawTree(Graphics graphics, ref float x, float y) { Arrange(graphics, ref x, ref y); DrawTree(graphics); } #endregion #region 노드 구하기 - GetNode(graphics, targetPoint) /// <summary> /// 노드 구하기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="targetPoint">타겟 포인트</param> /// <returns>노드</returns> public TreeNode<TData> GetNode(Graphics graphics, PointF targetPoint) { if(Data.IsAtPoint(graphics, Font, CenterPoint, targetPoint)) { return this; } foreach(TreeNode<TData> childNode in ChildNodeList) { TreeNode<TData> hitNode = childNode.GetNode(graphics, targetPoint); if(hitNode != null) { return hitNode; } } return null; } #endregion #region 노드 삭제하기 - DeleteNode(targetNode) /// <summary> /// 노드 삭제하기 /// </summary> /// <param name="targetNode">타겟 노드</param> /// <returns>삭제 결과</returns> public bool DeleteNode(TreeNode<TData> targetNode) { foreach(TreeNode<TData> childNode in ChildNodeList) { if(childNode == targetNode) { ChildNodeList.Remove(childNode); return true; } if(childNode.DeleteNode(targetNode)) { return true; } } return false; } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region 링크 그리기 - DrawLink(graphics, linkWeight, point1, point2) /// <summary> /// 링크 그리기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="linkWeight">링크 가중치</param> /// <param name="point1">포인트 1</param> /// <param name="point2">포인트 2</param> private void DrawLink(Graphics graphics, int linkWeight, PointF point1, PointF point2) { graphics.DrawLine(Pen, point1, point2); if(linkWeight > int.MinValue) { PointF middlePoint = new PointF ( (point1.X + point2.X) / 2f, (point1.Y + point2.Y) / 2f ); SizeF size = graphics.MeasureString(linkWeight.ToString(), LinkWeightFont); RectangleF rectangle = new RectangleF ( middlePoint.X - size.Width / 2f, middlePoint.Y - size.Height / 2f, size.Width, size.Height ); graphics.FillRectangle(WeightBackgroundBrush, rectangle); using(StringFormat stringFormat = new StringFormat()) { stringFormat.Alignment = StringAlignment.Center; stringFormat.LineAlignment = StringAlignment.Center; graphics.DrawString(linkWeight.ToString(), LinkWeightFont, LinkWeightBrush, rectangle, stringFormat); } } } #endregion #region 자식 노드 링크 그리기 - DrawChildNodeLink(graphics) /// <summary> /// 자식 노드 링크 그리기 /// </summary> /// <param name="graphics">그래픽스</param> private void DrawChildNodeLink(Graphics graphics) { foreach(TreeNode<TData> childNode in ChildNodeList) { DrawLink(graphics, childNode.LinkWeight, CenterPoint, childNode.CenterPoint); childNode.DrawChildNodeLink(graphics); } } #endregion #region 자식 노드 그리기 - DrawChildNode(graphics) /// <summary> /// 자식 노드 그리기 /// </summary> /// <param name="graphics">그래픽스</param> private void DrawChildNode(Graphics graphics) { Data.Draw(CenterPoint.X, CenterPoint.Y, graphics, Pen, BackgroundBrush, FontBrush, Font); foreach(TreeNode<TData> childNode in ChildNodeList) { childNode.DrawChildNode(graphics); } } #endregion } } |
▶ MainForm.cs
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using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Text; using System.Windows.Forms; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 루트 노드 /// </summary> private TreeNode<CircleNode> rootNode = new TreeNode<CircleNode>(new CircleNode("Root")); /// <summary> /// 선택 노드 /// </summary> private TreeNode<CircleNode> selectedNode; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); #region 이벤트를 설정한다. Load += Form_Load; this.addChildMenuItem.Click += addChildMenuItem_Click; this.deleteNodeMenuItem.Click += deleteNodeMenuItem_Click; this.canvasPictureBox.Resize += canvasPictureBox_Resize; this.canvasPictureBox.Paint += canvasPictureBox_Paint; this.canvasPictureBox.MouseDown += canvasPictureBox_MouseDown; this.canvasPictureBox.MouseMove += canvasPictureBox_MouseMove; #endregion } #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) { TreeNode<CircleNode> aNode = new TreeNode<CircleNode>(new CircleNode("A")); TreeNode<CircleNode> bNode = new TreeNode<CircleNode>(new CircleNode("B")); TreeNode<CircleNode> cNode = new TreeNode<CircleNode>(new CircleNode("C")); TreeNode<CircleNode> dNode = new TreeNode<CircleNode>(new CircleNode("D")); TreeNode<CircleNode> eNode = new TreeNode<CircleNode>(new CircleNode("E")); TreeNode<CircleNode> fNode = new TreeNode<CircleNode>(new CircleNode("F")); TreeNode<CircleNode> gNode = new TreeNode<CircleNode>(new CircleNode("G")); TreeNode<CircleNode> hNode = new TreeNode<CircleNode>(new CircleNode("H")); Random random = new Random(); this.rootNode.AddChild(aNode, random.Next(1, 100)); this.rootNode.AddChild(bNode, random.Next(1, 100)); aNode.AddChild(cNode, random.Next(1, 100)); aNode.AddChild(dNode, random.Next(1, 100)); bNode.AddChild(eNode, random.Next(1, 100)); bNode.AddChild(fNode, random.Next(1, 100)); bNode.AddChild(gNode, random.Next(1, 100)); eNode.AddChild(hNode, random.Next(1, 100)); ArrangeTree(); } #endregion #region 자식 추가하기 메뉴 항목 클릭시 처리하기 - addChildMenuItem_Click(sender, e) /// <summary> /// 자식 추가하기 메뉴 항목 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void addChildMenuItem_Click(object sender, EventArgs e) { AddChildNodeForm form = new AddChildNodeForm(); if(form.ShowDialog(this) == DialogResult.OK) { string text = form.NodeText; int weight = form.LinkWeight; TreeNode<CircleNode> childNode = new TreeNode<CircleNode>(new CircleNode(text)); this.selectedNode.AddChild(childNode, weight); ArrangeTree(); } } #endregion #region 노드 삭제하기 메뉴 항목 클릭시 처리하기 - deleteNodeMenuItem_Click(sender, e) /// <summary> /// 노드 삭제하기 메뉴 항목 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void deleteNodeMenuItem_Click(object sender, EventArgs e) { DialogResult result = MessageBox.Show ( "노드를 삭제하시겠습니까?", "확인", MessageBoxButtons.YesNo, MessageBoxIcon.Question ); if(result == DialogResult.Yes) { this.rootNode.DeleteNode(this.selectedNode); ArrangeTree(); } } #endregion #region 캔버스 픽처 박스 크기 조정시 처리하기 - canvasPictureBox_Resize(sender, e) /// <summary> /// 캔버스 픽처 박스 크기 조정시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void canvasPictureBox_Resize(object sender, EventArgs e) { ArrangeTree(); } #endregion #region 캔버스 픽처 박스 마우스 이동시 처리하기 - canvasPictureBox_MouseMove(sender, e) /// <summary> /// 캔버스 픽처 박스 마우스 이동시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void canvasPictureBox_MouseMove(object sender, MouseEventArgs e) { SetSelectedNode(e.Location); if(this.selectedNode == null) { this.statusLabel.Text = string.Empty; } else { this.statusLabel.Text = this.selectedNode.Data.Text; } } #endregion #region 캔버스 픽처 박스 마우스 DOWN 처리하기 - canvasPictureBox_MouseDown(sender, e) /// <summary> /// 캔버스 픽처 박스 마우스 DOWN 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void canvasPictureBox_MouseDown(object sender, MouseEventArgs e) { if(e.Button != MouseButtons.Right) { return; } SetSelectedNode(e.Location); if(this.selectedNode != null) { this.deleteNodeMenuItem.Enabled = (this.selectedNode != this.rootNode); this.contextMenuStrip.Show(this, e.Location); } } #endregion #region 캔버스 픽처 박스 페인트시 처리하기 - canvasPictureBox_Paint(sender, e) /// <summary> /// 캔버스 픽처 박스 페인트시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void canvasPictureBox_Paint(object sender, PaintEventArgs e) { e.Graphics.SmoothingMode = SmoothingMode.AntiAlias; e.Graphics.TextRenderingHint = TextRenderingHint.AntiAliasGridFit; this.rootNode.DrawTree(e.Graphics); } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 트리 정렬하기 - ArrangeTree() /// <summary> /// 트리 정렬하기 /// </summary> private void ArrangeTree() { using(Graphics graphics = this.canvasPictureBox.CreateGraphics()) { float minimumX = 0; float minimumY = 0; this.rootNode.Arrange(graphics, ref minimumX, ref minimumY); minimumX = (this.ClientSize.Width - minimumX) / 2; minimumY = 10; this.rootNode.Arrange(graphics, ref minimumX, ref minimumY); } this.canvasPictureBox.Refresh(); } #endregion #region 선택 노드 설정하기 - SetSelectedNode(PointF mousePoint) /// <summary> /// 선택 노드 설정하기 /// </summary> /// <param name="mousePoint">마우스 포인트</param> private void SetSelectedNode(PointF mousePoint) { using(Graphics graphics = this.canvasPictureBox.CreateGraphics()) { this.selectedNode = this.rootNode.GetNode(graphics, mousePoint); } } #endregion } } |
