1 | using System;
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2 | using System.Collections.Generic;
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3 | using System.Linq;
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4 | using System.Text;
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5 | using Netron.Diagramming.Core;
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6 | using System.Drawing;
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7 | using System.Drawing.Drawing2D;
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8 |
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9 | namespace HeuristicLab.Netron {
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10 | public class View : ViewBase {
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11 |
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12 | public View(IDiagramControl control)
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13 | : base(control) {
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14 | Selection.OnNewSelection += new EventHandler(Selection_OnNewSelection);
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15 | // this.Model.OnEntityAdded += new EventHandler<EntityEventArgs>(Model_OnEntityAdded);
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16 | this.HorizontalRuler.Visible = true;
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17 | this.VerticalRuler.Visible = true;
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18 | GhostsFactory.View = this;
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19 | }
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20 |
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21 | void Model_OnEntityAdded(object sender, EntityEventArgs e) {
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22 |
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23 | }
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24 |
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25 | void Selection_OnNewSelection(object sender, EventArgs e) {
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26 | ShowTracker();
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27 | }
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28 |
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29 | public override void Paint(Graphics g) {
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30 | base.Paint(g);
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31 | //Rectangle rectangle = WorkArea;
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32 | //g.SetClip(WorkArea);
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33 | g.Transform = ViewMatrix;
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34 | //draw the ghost and ants on top of the diagram
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35 | if (Ants != null)
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36 | Ants.Paint(g);
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37 | if (Ghost != null)
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38 | Ghost.Paint(g);
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39 | if (Tracker != null)
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40 | Tracker.Paint(g);
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41 |
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42 | g.Transform.Reset();
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43 | //g.PageUnit = GraphicsUnit.Pixel;
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44 | //g.PageScale = 1.0F;
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45 | }
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46 |
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47 | protected virtual void InvalidateGhostArea() {
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48 | if (Ghost != null) {
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49 | Rectangle area = Ghost.Rectangle;
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50 | // Inflate it a little so we make sure to get everything.
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51 | area.Inflate(20, 20);
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52 | this.Invalidate(area);
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53 | }
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54 | }
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55 |
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56 | protected virtual void InvalidateTrackerArea() {
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57 | if (Tracker != null) {
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58 | Rectangle area = Tracker.Rectangle;
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59 | // Inflate it a little so we make sure to get everything.
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60 | area.Inflate(20, 20);
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61 | this.Invalidate(area);
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62 | }
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63 | }
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64 |
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65 | protected virtual void InvalidateAntsArea() {
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66 | if (Ants != null) {
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67 | Rectangle area = Ants.Rectangle;
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68 | // Inflate it a little so we make sure to get everything.
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69 | area.Inflate(20, 20);
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70 | this.Invalidate(area);
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71 | }
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72 | }
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73 |
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74 | public override void PaintGhostEllipse(
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75 | Point ltPoint,
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76 | Point rbPoint) {
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77 | // Refresh the old ghost area if needed.
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78 | this.InvalidateGhostArea();
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79 |
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80 | Ghost = GhostsFactory.GetGhost(
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81 | new Point[] { ltPoint, rbPoint },
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82 | GhostTypes.Ellipse);
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83 | }
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84 | public override void PaintGhostRectangle(
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85 | Point ltPoint,
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86 | Point rbPoint) {
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87 | // Refresh the old ghost area if needed.
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88 | this.InvalidateGhostArea();
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89 |
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90 | Ghost = GhostsFactory.GetGhost(
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91 | new Point[] { ltPoint, rbPoint },
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92 | GhostTypes.Rectangle);
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93 | }
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94 | public override void PaintAntsRectangle(
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95 | Point ltPoint,
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96 | Point rbPoint) {
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97 | // Refresh the old area if needed.
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98 | this.InvalidateAntsArea();
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99 | Ants = AntsFactory.GetAnts(
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100 | new Point[] { ltPoint, rbPoint },
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101 | AntTypes.Rectangle);
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102 | }
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103 | public override void PaintGhostLine(Point ltPoint, Point rbPoint) {
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104 | // Refresh the old ghost area if needed.
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105 | this.InvalidateGhostArea();
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106 |
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107 | Ghost = GhostsFactory.GetGhost(
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108 | new Point[] { ltPoint, rbPoint },
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109 | GhostTypes.Line);
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110 | }
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111 | public override void PaintGhostLine(
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112 | MultiPointType curveType,
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113 | Point[] points) {
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114 | // Refresh the old ghost area if needed.
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115 | this.InvalidateGhostArea();
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116 |
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117 | switch (curveType) {
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118 | case MultiPointType.Straight:
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119 | Ghost = GhostsFactory.GetGhost(points, GhostTypes.MultiLine);
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120 | break;
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121 | case MultiPointType.Polygon:
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122 | Ghost = GhostsFactory.GetGhost(points, GhostTypes.Polygon);
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123 | break;
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124 | case MultiPointType.Curve:
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125 | Ghost = GhostsFactory.GetGhost(points, GhostTypes.CurvedLine);
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126 | break;
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127 |
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128 | }
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129 | }
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130 |
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131 | public override void PaintTracker(Rectangle rectangle, bool showHandles) {
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132 | // Refresh the old area if needed.
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133 | this.InvalidateTrackerArea();
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134 | Tracker = TrackerFactory.GetTracker(rectangle, TrackerTypes.Default, showHandles);
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135 | rectangle.Inflate(20, 20);
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136 | this.Invalidate(rectangle);
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137 | }
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138 |
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139 | #region Tracker
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140 |
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141 | private enum TrackerTypes {
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142 | Default
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143 | }
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144 |
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145 | private class TrackerFactory {
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146 |
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147 | private static ITracker defTracker;
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148 |
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149 | public static ITracker GetTracker(Rectangle rectangle, TrackerTypes type, bool showHandles) {
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150 | switch (type) {
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151 | case TrackerTypes.Default:
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152 | if (defTracker == null) defTracker = new DefaultTracker();
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153 | defTracker.Transform(rectangle);
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154 | defTracker.ShowHandles = showHandles;
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155 | return defTracker;
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156 | default:
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157 | return null;
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158 | }
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159 |
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160 | }
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161 | }
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162 |
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163 | private class DefaultTracker : TrackerBase {
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164 | private const int gripSize = 4;
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165 | private const int hitSize = 6;
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166 | float mx, my, sx, sy;
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167 |
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168 | public DefaultTracker(Rectangle rectangle)
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169 | : base(rectangle) {
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170 | }
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171 |
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172 | public DefaultTracker()
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173 | : base() { }
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174 |
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175 | public override void Transform(Rectangle rectangle) {
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176 | this.Rectangle = rectangle;
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177 | }
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178 |
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179 | public override void Paint(Graphics g) {
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180 | //the main rectangle
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181 | g.DrawRectangle(ArtPalette.TrackerPen, Rectangle);
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182 | #region Recalculate the size and location of the grips
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183 | mx = Rectangle.X + Rectangle.Width / 2;
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184 | my = Rectangle.Y + Rectangle.Height / 2;
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185 | sx = Rectangle.Width / 2;
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186 | sy = Rectangle.Height / 2;
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187 | #endregion
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188 | #region draw the grips
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189 | if (!ShowHandles) return;
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190 |
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191 | for (int x = -1; x <= 1; x++) {
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192 | for (int y = -1; y <= 1; y++) {
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193 | if (x != 0 || y != 0) //not the middle one
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194 | {
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195 | g.FillRectangle(ArtPalette.GripBrush, mx + x * sx - gripSize / 2, my + y * sy - gripSize / 2, gripSize, gripSize);
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196 | g.DrawRectangle(ArtPalette.BlackPen, mx + x * sx - gripSize / 2, my + y * sy - gripSize / 2, gripSize, gripSize);
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197 | }
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198 | }
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199 | }
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200 | #endregion
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201 | }
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202 |
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203 | public override Point Hit(Point p) {
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204 | //no need to test if the handles are not shown
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205 | if (!ShowHandles) return Point.Empty;
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206 |
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207 | for (int x = -1; x <= +1; x++)
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208 | for (int y = -1; y <= +1; y++)
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209 | if ((x != 0) || (y != 0)) {
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210 | if (new RectangleF(mx + x * sx - hitSize / 2, my + y * sy - hitSize / 2, hitSize, hitSize).Contains(p))
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211 | return new Point(x, y);
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212 | }
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213 | return Point.Empty;
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214 | }
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215 | }
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216 | #endregion
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217 | }
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218 | }
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