1 | using System;
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2 | using System.Diagnostics;
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3 | using System.Collections;
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4 | using System.Drawing;
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5 | using System.Windows.Forms;
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6 | using System.IO;
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7 | using System.Runtime.Serialization;
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8 | using System.Runtime.Serialization.Formatters.Binary;
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9 | namespace Netron.Diagramming.Core
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10 | {
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11 | // ----------------------------------------------------------------------
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12 | /// <summary>
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13 | /// This tool pastes items from the clipboard to the canvas.
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14 | /// </summary>
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15 | // ----------------------------------------------------------------------
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16 | public class PasteTool : AbstractTool
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17 | {
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18 | // ------------------------------------------------------------------
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19 | /// <summary>
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20 | /// Specifies where the items from the clipboard will be
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21 | /// inserted at.
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22 | /// </summary>
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23 | // ------------------------------------------------------------------
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24 | public static Point InsertionPoint = new Point(50, 50);
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25 |
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26 | #region Fields
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27 | #endregion
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28 |
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29 | #region Constructor
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30 | /// <summary>
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31 | /// Initializes a new instance of the <see cref="T:HoverTool"/> class.
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32 | /// </summary>
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33 | /// <param name="name">The name of the tool.</param>
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34 | public PasteTool(string name)
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35 | : base(name)
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36 | {
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37 | }
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38 | #endregion
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39 |
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40 | #region Methods
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41 |
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42 | /// <summary>
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43 | /// Called when the tool is activated.
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44 | /// </summary>
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45 | protected override void OnActivateTool()
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46 | {
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47 | try
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48 | {
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49 | // Used to get a collection of entities from the
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50 | // NetronClipboard.
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51 | Type entitiesType = typeof(CollectionBase<IDiagramEntity>);
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52 |
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53 | // First calculate the insertion point based on the
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54 | // current location of the cursor.
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55 | InsertionPoint = Point.Round(
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56 | Controller.View.ViewToWorld(
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57 | Controller.View.DeviceToView(
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58 | Controller.ParentControl.PointToClient(Cursor.Position))));
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59 |
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60 | IDataObject data = Clipboard.GetDataObject();
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61 | string format = typeof(CopyTool).FullName;
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62 | if (data.GetDataPresent(format))
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63 | {
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64 | MemoryStream stream = data.GetData(format) as MemoryStream;
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65 | CollectionBase<IDiagramEntity> collection = null;
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66 | GenericFormatter<BinaryFormatter> f =
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67 | new GenericFormatter<BinaryFormatter>();
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68 | //Anchors collection is a helper collection to re-connect connectors to their parent
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69 | Anchors.Clear();
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70 | //but is it actually a stream coming this application?
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71 | collection = f.Deserialize<CollectionBase<IDiagramEntity>>(stream);
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72 | UnwrapBundle(collection);
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73 |
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74 | }
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75 | else if (NetronClipboard.ContainsData(entitiesType))
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76 | {
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77 | CollectionBase<IDiagramEntity> collection =
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78 | (CollectionBase<IDiagramEntity>)NetronClipboard.Get(
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79 | entitiesType);
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80 |
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81 | UnwrapBundle(collection.DeepCopy());
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82 | }
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83 | else if (data.GetDataPresent(DataFormats.Bitmap))
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84 | {
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85 | Bitmap bmp = data.GetData(DataFormats.Bitmap) as Bitmap;
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86 | if (bmp != null)
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87 | {
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88 | #region Unwrap into an image shape
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89 | //TODO: Insert the image shape here
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90 | ImageShape shape = new ImageShape();
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91 | shape.Image = bmp;
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92 | shape.Location = InsertionPoint;
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93 | Controller.Model.AddShape(shape);
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94 | #endregion
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95 | }
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96 | }
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97 | else if (data.GetDataPresent(DataFormats.Text))
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98 | {
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99 | string text = (string) data.GetData(typeof(string));
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100 | TextOnly textShape = new TextOnly(Controller.Model);
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101 | textShape.Text = text;
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102 | textShape.Location = InsertionPoint;
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103 | Controller.Model.AddShape(textShape);
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104 | }
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105 | }
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106 | catch (Exception exc)
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107 | {
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108 | throw new InconsistencyException("The Paste operation failed.", exc);
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109 | }
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110 | finally
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111 | {
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112 | DeactivateTool();
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113 | }
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114 |
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115 | }
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116 |
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117 | #endregion
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118 |
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119 | /// <summary>
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120 | /// Unwraps the given bundle to the diagram.
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121 | /// </summary>
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122 | /// <param name="collection">CollectionBase<IDiagramEntity></param>
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123 | void UnwrapBundle(CollectionBase<IDiagramEntity> collection)
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124 | {
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125 | if (collection != null)
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126 | {
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127 | #region Unwrap the bundle
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128 | this.Controller.Model.Unwrap(collection);
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129 |
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130 | Rectangle rec = Utils.BoundingRectangle(collection);
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131 |
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132 | // The InsertionPoint specifies where the pasted
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133 | // entities should be. So, shift each entity in the
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134 | // collection to the InsertionPoint.
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135 | Point delta = new Point(
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136 | InsertionPoint.X - rec.Location.X,
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137 | InsertionPoint.Y - rec.Location.Y);
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138 | //delta.Offset(rec.Location);
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139 |
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140 | foreach (IDiagramEntity entity in collection)
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141 | {
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142 | entity.MoveBy(delta);
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143 | }
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144 |
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145 | // Recalculate the bounding rectangle and invalidate
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146 | // that area on the canvas.
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147 | rec = Utils.BoundingRectangle(collection);
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148 | rec.Inflate(30, 30);
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149 | this.Controller.View.Invalidate(rec);
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150 | #endregion
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151 | }
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152 | }
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153 | }
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154 |
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155 | }
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