[13077] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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| 23 | using System.Drawing;
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| 24 | using System.Drawing.Drawing2D;
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| 25 | using HeuristicLab.Visualization;
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| 26 |
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| 27 | namespace HeuristicLab.Networks.Views.NetworkVisualization {
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| 28 | public class ConnectionLine : Line {
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| 29 | protected PortRectangle startPortRectangle;
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| 30 | public PortRectangle StartPortRectangle {
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| 31 | get { return startPortRectangle; }
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| 32 | set {
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| 33 | if (startPortRectangle == value) return;
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| 34 | if (startPortRectangle != null) DeregisterPortRectangleEvents(startPortRectangle);
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| 35 | startPortRectangle = value;
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| 36 | if (startPortRectangle != null) RegisterPortRectangleEvents(startPortRectangle);
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| 37 | OnStartPortRectangleChanged();
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| 38 | }
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| 39 | }
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| 40 |
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| 41 | protected PortRectangle endPortRectangle;
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| 42 | public PortRectangle EndPortRectangle {
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| 43 | get { return endPortRectangle; }
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| 44 | set {
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| 45 | if (endPortRectangle == value) return;
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| 46 | if (endPortRectangle != null) DeregisterPortRectangleEvents(endPortRectangle);
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| 47 | endPortRectangle = value;
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| 48 | if (endPortRectangle != null) RegisterPortRectangleEvents(endPortRectangle);
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| 49 | OnEndPortRectangleChanged();
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| 50 | }
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| 51 | }
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| 52 |
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| 53 | public ConnectionLine(IChart chart, PortRectangle start, PortRectangle end)
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| 54 | : base(chart, start.Point, end.Point) {
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| 55 | StartPortRectangle = start;
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| 56 | EndPortRectangle = end;
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| 57 | }
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| 58 |
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| 59 | protected virtual void RegisterPortRectangleEvents(PortRectangle portRectangle) {
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| 60 | portRectangle.RedrawRequired += PortRectangle_RedrawRequired;
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| 61 | }
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| 62 |
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| 63 | protected virtual void DeregisterPortRectangleEvents(PortRectangle portRectangle) {
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| 64 | portRectangle.RedrawRequired -= PortRectangle_RedrawRequired;
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| 65 | }
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| 66 |
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| 67 | #region Overrides
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| 68 | public override void Move(Offset delta) { }
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| 69 | public override void Move(PointD point, Offset delta) { }
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| 70 |
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| 71 | public override void Draw(Graphics graphics) {
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| 72 | base.Draw(graphics);
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| 73 |
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| 74 | var startP = Chart.TransformWorldToPixel(Start);
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| 75 | var endP = Chart.TransformWorldToPixel(End);
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| 76 |
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| 77 | if (startP == endP) return;
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| 78 |
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| 79 | double length = Math.Sqrt(Math.Pow(startP.X - endP.X, 2.0) + Math.Pow(startP.Y - endP.Y, 2));
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| 80 | double ax = (endP.X - startP.X) / length, ay = (endP.Y - startP.Y) / length;
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| 81 | double bx = -2.5 * ax - ay, by = -2.5 * ay + ax;
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| 82 | double cx = -2.5 * ax + ay, cy = -2.5 * ay - ax;
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| 83 | double mul = 4 * Chart.WorldToPixelRatio.Width;
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| 84 | bx *= mul; by *= mul;
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| 85 | cx *= mul; cy *= mul;
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| 86 | var p1 = new Point((int)Math.Round(endP.X + bx), (int)Math.Round(endP.Y + by));
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| 87 | var p2 = new Point((int)Math.Round(endP.X + cx), (int)Math.Round(endP.Y + cy));
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| 88 | graphics.FillPolygon(Pen.Brush, new[] { p1, endP, p2 });
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| 89 | }
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| 90 |
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| 91 | public override void PostDraw(Graphics graphics) {
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| 92 | if (Selected) {
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| 93 | using (var pen = new Pen(Color.LightGray, 3) { DashStyle = DashStyle.Dash })
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| 94 | graphics.DrawLine(pen, Chart.TransformWorldToPixel(Start), Chart.TransformWorldToPixel(End));
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| 95 | }
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| 96 | }
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| 97 | #endregion
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| 98 |
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| 99 | #region Events
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| 100 | public event EventHandler StartPortRectangleChanged;
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| 101 | protected virtual void OnStartPortRectangleChanged() {
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| 102 | var handler = StartPortRectangleChanged;
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| 103 | if (handler != null) handler(this, EventArgs.Empty);
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| 104 | }
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| 105 |
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| 106 | public event EventHandler EndPortRectangleChanged;
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| 107 | protected virtual void OnEndPortRectangleChanged() {
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| 108 | var handler = EndPortRectangleChanged;
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| 109 | if (handler != null) handler(this, EventArgs.Empty);
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| 110 | }
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| 111 | #endregion
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| 112 |
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| 113 | #region Event Handlers
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| 114 | private void PortRectangle_RedrawRequired(object sender, EventArgs e) {
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| 115 | SetPosition(startPortRectangle.Point, endPortRectangle.Point);
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| 116 | }
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| 117 | #endregion
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| 118 | }
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| 119 | }
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