■ AddFlow 클래스를 사용해 다이어그램을 생성하는 방법을 보여준다. (커스텀 그리기)
▶ MainForm.cs
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using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms; using Lassalle.Flow; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.addFlow.NodeOwnerDraw += addFlow_NodeOwnerDraw; this.addFlow.LinkOwnerDraw += addFlow_LinkOwnerDraw; this.addFlow.DiagramOwnerDraw += addFlow_DiagramOwnerDraw; CreateDiagram(this.addFlow); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region AddFlow 다이어그램 소유자 그리기 - addFlow_DiagramOwnerDraw(sender, e) /// <summary> /// AddFlow 다이어그램 소유자 그리기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void addFlow_DiagramOwnerDraw(object sender, DiagramOwnerDrawEventArgs e) { Graphics graphics = e.Graphics; GraphicsState graphicsState = graphics.Save(); int swimLineHeight = 50; int width = (int)(this.addFlow.ClientRectangle.Size.Width + this.addFlow.Extent.Width ); int height = (int)(this.addFlow.ClientRectangle.Size.Height + this.addFlow.Extent.Height); int swimlineCount = height / swimLineHeight; Rectangle rectangle; for(int i = 0; i <= swimlineCount; i++) { rectangle = new Rectangle(0, i * swimLineHeight, width, swimLineHeight); if(i % 2 == 0) { graphics.FillRectangle(Brushes.LightYellow, rectangle); } else { graphics.FillRectangle(Brushes.LightBlue, rectangle); } } graphics.Restore(graphicsState); } #endregion #region AddFlow 노드 소유자 그리기 - addFlow_NodeOwnerDraw(sender, e) /// <summary> /// AddFlow 노드 소유자 그리기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void addFlow_NodeOwnerDraw(object sender, ContentItemOwnerDrawEventArgs e) { Graphics graphics = e.Graphics; Node node = e.ContentItem as Node; GraphicsState graphicsState = graphics.Save(); HatchBrush hatchBrush = new HatchBrush(HatchStyle.BackwardDiagonal, Color.White, Color.Silver); RectangleF nodeRectangle = new RectangleF(node.Location, node.Size); graphics.FillEllipse(hatchBrush, nodeRectangle); graphics.Restore(graphicsState); // AddFlow에게 노드를 칠하지 말라고 알린다. e.Flags = ~ContentItemDrawFlags.Fill; } #endregion #region AddFlow 링크 소유자 그리기 - addFlow_LinkOwnerDraw(sender, e) /// <summary> /// AddFlow 링크 소유자 그리기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void addFlow_LinkOwnerDraw(object sender, LinkOwnerDrawEventArgs e) { Graphics graphics = e.Graphics; Link link = e.Link; if(link.Points.Count > 2) { GraphicsState graphicsState = graphics.Save(); int degree = 0; Brush brush = new SolidBrush(link.TextColor); for(int i = 0; i < link.Points.Count - 1; i++) { float x1 = link.Points[i ].X; float y1 = link.Points[i ].Y; float x2 = link.Points[i + 1].X; float y2 = link.Points[i + 1].Y; float x = x2 - x1; float y = -(y2 - y1); float distance = (float)Math.Sqrt(x * x + y * y); float cosA = x / distance; float sinA = y / distance; if(distance == 0) { degree = 0; } else { degree = (int)(180.0 / 3.1415899999999999 * Math.Acos(cosA)); if(sinA < 0) { degree = -degree; } if(cosA < 0) { degree += 180; } } PointF point = new PointF ( (link.Points[i].X + link.Points[i + 1].X) / 2, (link.Points[i].Y + link.Points[i + 1].Y) / 2 ); graphics.TranslateTransform(point.X, point.Y); if(degree != 0) { graphics.RotateTransform(-degree); } graphics.DrawString(link.Text, link.Font, brush, new PointF(0, 0)); if(degree != 0) { graphics.RotateTransform(degree); } graphics.TranslateTransform(-point.X, -point.Y); } graphics.Restore(graphicsState); // AddFlow에게 텍스트를 표시하지 말라고 알린다. // 그러나, 링크의 다른 부분들은 (라인, 화살표) AddFlow에 의해 표시될 것이다. e.Flags = ~LinkDrawFlags.Text; } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 다이어그램 생성하기 - CreateDiagram(addFlow) /// <summary> /// 다이어그램 생성하기 /// </summary> /// <param name="addFlow">AddFlow</param> private void CreateDiagram(AddFlow addFlow) { addFlow.PageUnit = GraphicsUnit.Point; addFlow.IsOwnerDraw = true; addFlow.NodeModel.IsOwnerDraw = true; addFlow.NodeModel.ShapeFamily = ShapeFamily.Ellipse; addFlow.NodeModel.Font = new Font("Calibri", 12); addFlow.LinkModel.IsOwnerDraw = true; // 2개의 노드들과 링크를 생성한다. Node startNode = new Node(30 , 30, 50, 50, "노드 1", addFlow); Node endNode = new Node(330, 30, 50, 50, "노드 2", addFlow); addFlow.AddNode(startNode); addFlow.AddNode(endNode ); Link link = new Link(startNode, endNode, "링크", addFlow); link.DrawColor = Color.Red; addFlow.AddLink(link); link.AddPoint(new PointF(55 , 160)); link.AddPoint(new PointF(355, 160)); } #endregion } } |
