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.Collections.Generic;
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24 | using System.Drawing;
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25 | using System.Linq;
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26 | using HeuristicLab.Core.Networks;
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27 | using HeuristicLab.Visualization;
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28 |
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29 | namespace HeuristicLab.Networks.Views.NetworkVisualization {
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30 | public class NodeRectangle : Visualization.Rectangle, INetworkItemPrimitive<IVisualizableNode> {
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31 | private readonly Dictionary<IPort, PortRectangle> port2PortRectangle = new Dictionary<IPort, PortRectangle>();
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32 |
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33 | protected IGroup portRectangles;
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34 |
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35 | protected bool IgnoreVisualPropertiesChanges { get; set; }
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36 |
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37 | protected IVisualizableNode networkItem;
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38 | public IVisualizableNode NetworkItem {
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39 | get { return networkItem; }
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40 | set {
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41 | if (networkItem == value) return;
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42 | if (networkItem != null) DeregisterNetworkItemEvents();
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43 | networkItem = value;
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44 | if (networkItem != null) RegisterNetworkItemEvents();
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45 | UpdateToolTip();
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46 | LoadVisualProperties();
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47 | OnNetworkItemChanged();
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48 | }
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49 | }
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50 |
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51 | public NodeRectangle(IChart chart, IVisualizableNode node)
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52 | : base(chart, Point.Empty, Point.Empty) {
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53 | NetworkItem = node;
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54 |
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55 | portRectangles = new Group(chart);
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56 | foreach (var port in node.Ports) {
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57 | var portRectangle = new PortRectangle(this, port);
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58 | port2PortRectangle.Add(port, portRectangle);
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59 | portRectangles.Add(portRectangle);
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60 | }
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61 | UpdatePortRectangles();
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62 | portRectangles.RedrawRequired += (sender, args) => OnRedrawRequired();
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63 | }
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64 |
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65 | protected virtual void RegisterNetworkItemEvents() {
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66 | networkItem.NameChanged += NetworkItemNameChanged;
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67 | if (networkItem.VisualProperties != null) {
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68 | networkItem.VisualProperties.Changed += VisualProperties_Changed;
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69 | }
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70 | if (networkItem.Ports != null) {
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71 | networkItem.Ports.ItemsAdded += Ports_ItemsAdded;
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72 | networkItem.Ports.ItemsRemoved += Ports_ItemsRemoved;
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73 | }
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74 | }
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75 |
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76 | protected virtual void DeregisterNetworkItemEvents() {
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77 | networkItem.NameChanged -= NetworkItemNameChanged;
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78 | if (networkItem.VisualProperties != null) {
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79 | networkItem.VisualProperties.Changed -= VisualProperties_Changed;
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80 | }
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81 | if (networkItem.Ports != null) {
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82 | networkItem.Ports.ItemsAdded -= Ports_ItemsAdded;
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83 | networkItem.Ports.ItemsRemoved -= Ports_ItemsRemoved;
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84 | }
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85 | }
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86 |
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87 | #region Overrides
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88 | public override void SetPosition(PointD lowerLeft, PointD upperRight) {
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89 | SuppressEvents = true;
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90 | try {
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91 | base.SetPosition(lowerLeft, upperRight);
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92 | SaveVisualProperties();
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93 | UpdatePortRectangles();
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94 | } finally {
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95 | SuppressEvents = false;
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96 | OnRedrawRequired();
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97 | }
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98 | }
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99 |
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100 | public override void Draw(Graphics graphics) {
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101 | base.Draw(graphics);
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102 |
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103 | var p = Chart.TransformWorldToPixel(new PointD(LowerLeft.X, LowerLeft.Y + Size.Height));
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104 |
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105 | using (var font = new Font(FontFamily.GenericSansSerif, (float)Math.Round(8.25 * Chart.WorldToPixelRatio.Width))) {
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106 | graphics.DrawString(ToolTipText, font, Brushes.Black, p.X + 5, p.Y + 5);
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107 | }
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108 |
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109 | portRectangles.Draw(graphics);
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110 | }
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111 | #endregion
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112 |
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113 | public PortRectangle GetPortRectangle(IPort name) {
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114 | PortRectangle portRectangle;
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115 | port2PortRectangle.TryGetValue(name, out portRectangle);
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116 | return portRectangle;
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117 | }
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118 |
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119 | #region Events
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120 | public event EventHandler NetworkItemChanged;
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121 | protected virtual void OnNetworkItemChanged() {
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122 | var handler = NetworkItemChanged;
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123 | if (handler != null) handler(this, EventArgs.Empty);
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124 | }
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125 | #endregion
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126 |
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127 | #region Event Handlers
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128 | private void NetworkItemNameChanged(object sender, EventArgs e) {
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129 | UpdateToolTip();
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130 | }
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131 |
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132 | private void VisualProperties_Changed(object sender, EventArgs e) {
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133 | if (IgnoreVisualPropertiesChanges) return;
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134 | LoadVisualProperties();
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135 | }
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136 |
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137 | private void Ports_ItemsAdded(object sender, Collections.CollectionItemsChangedEventArgs<IPort> e) {
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138 | foreach (var port in e.Items) {
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139 | var portRectangle = new PortRectangle(this, port);
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140 | port2PortRectangle.Add(port, portRectangle);
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141 | portRectangles.Add(portRectangle);
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142 | }
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143 |
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144 | SuppressEvents = true;
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145 | try {
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146 | UpdatePortRectangles();
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147 | } finally {
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148 | SuppressEvents = false;
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149 | OnRedrawRequired();
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150 | }
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151 | }
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152 |
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153 | private void Ports_ItemsRemoved(object sender, Collections.CollectionItemsChangedEventArgs<IPort> e) {
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154 | foreach (var port in e.Items) {
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155 | var portRectangle = port2PortRectangle[port];
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156 | port2PortRectangle.Remove(port);
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157 | portRectangles.Remove(portRectangle);
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158 | }
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159 |
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160 | UpdatePortRectangles();
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161 | OnRedrawRequired();
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162 | }
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163 | #endregion
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164 |
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165 | #region Helpers
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166 | private void UpdateToolTip() {
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167 | ToolTipText = networkItem.Name;
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168 | }
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169 |
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170 | private void LoadVisualProperties() {
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171 | var offset = Chart.UpperRight - Chart.LowerLeft;
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172 | var center = new PointD(Chart.LowerLeft.X + offset.DX * 0.5, Chart.LowerLeft.Y + offset.DY * 0.5);
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173 | var size = Chart.TransformPixelToWorld(new Size(200, 100));
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174 |
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175 | bool vpAvailable = networkItem != null && networkItem.VisualProperties != null;
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176 | bool useDefaultLocation = !vpAvailable || double.IsNaN(networkItem.VisualProperties.X);
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177 | bool useDefaultSize = !vpAvailable || double.IsNaN(networkItem.VisualProperties.Width);
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178 |
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179 | if (!useDefaultLocation) {
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180 | center.X = networkItem.VisualProperties.X;
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181 | center.Y = networkItem.VisualProperties.Y;
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182 | }
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183 |
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184 | if (!useDefaultSize) {
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185 | size.Width = networkItem.VisualProperties.Width;
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186 | size.Height = networkItem.VisualProperties.Height;
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187 | }
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188 |
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189 | var ll = new PointD(center.X - size.Width * 0.5, center.Y - size.Height * 0.5);
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190 | var ur = ll + new Offset(size.Width, size.Height);
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191 |
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192 | SetPosition(ll, ur);
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193 | }
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194 |
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195 | private void SaveVisualProperties() {
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196 | if (networkItem == null) return;
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197 |
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198 | var visualProperties = networkItem.VisualProperties;
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199 | var centerW = new PointD(LowerLeft.X + Size.Width * 0.5, UpperRight.Y - Size.Height * 0.5);
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200 |
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201 | IgnoreVisualPropertiesChanges = true;
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202 | try {
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203 | visualProperties.X = centerW.X;
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204 | visualProperties.Y = centerW.Y;
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205 | visualProperties.Width = Size.Width;
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206 | visualProperties.Height = Size.Height;
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207 | } finally { IgnoreVisualPropertiesChanges = false; }
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208 |
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209 | OnRedrawRequired();
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210 | }
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211 |
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212 | private void UpdatePortRectangles() {
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213 | if (portRectangles == null) return;
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214 |
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215 | var rectangles = portRectangles.OfType<PortRectangle>().ToArray();
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216 | double space = Size.Width / (rectangles.Length + 1);
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217 | for (int i = 0; i < rectangles.Length; i++) {
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218 | double dx = Math.Round(space * (i + 1));
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219 | var point = LowerLeft + new Offset(dx, 0);
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220 | rectangles[i].SetPosition(point);
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221 | }
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222 | }
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223 | #endregion
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224 | }
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225 | }
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