Silverlight在线几何绘图

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.xml.Linq;
using GuiLabs.Utils.Actions;

namespace DynamicGeometry
{
    public class Drawing
    {
        public Drawing（Canvas newCanvas）
        {
            ActionManager = new ActionManager（）;
            Behavior = new Dragger（）;

            Figures = new RootFigureList（） { Drawing = this };

            OnAttachToCanvas += Drawing_OnAttachToCanvas;
            OnDetachFromCanvas += Drawing_OnDetachFromCanvas;
            Canvas = newCanvas;

            CoordinateSystem = new CoordinateSystem（this）;
            CoordinateGrid = new CartesianGrid（） { Drawing = this };
            Figures.Add（CoordinateGrid）;
        }

        public IFigure this[string index]
        {
            get { return Figures[index]; }
        }

        void Drawing_OnAttachToCanvas（Canvas e）
        {
            e.SizeChanged += mCanvas_SizeChanged;
            Figures.OnAddingToCanvas（e）;
        }

        void Drawing_OnDetachFromCanvas（Canvas e）
        {
            e.SizeChanged -= mCanvas_SizeChanged;
            Figures.OnRemovingFromCanvas（e）;
        }

        #region Events

        public event EventHandlerchangedEventArgs> Selectionchanged;

        public class SelectionchangedEventArgs : EventArgs
        {
            public SelectionchangedEventArgs（）
            {
                SelectedFigures = Enumerable.Empty（）;
            }

            public SelectionchangedEventArgs（IEnumerable selection）
                : this（）
            {
                SelectedFigures = selection;
            }

            public SelectionchangedEventArgs（IFigure singleSelection）
                : this（singleSelection.AsEnumerable（））
            {
            }

            public IEnumerable SelectedFigures { get; set; }
        }

        internal void ClearSelectedFigures（）
        {
            foreach （IFigure figure in this.Figures）
            {
                if （figure.Selected）
                {
                    figure.Selected = false;
                }
            }
        }

        internal void RaiseSelectionchanged（SelectionchangedEventArgs args）
        {
            if （Selectionchanged != null）
            {
                Selectionchanged（this args）;
            }
        }

        public class ConstructionStepCompleteEventArgs : EventArgs
        {
            public bool ConstructionComplete { get; set; }
            public Type FigureTypeNeeded { get; set; }
        }

        public event EventHandler ConstructionStepComplete;

        internal void RaiseConstructionStepComplete（ConstructionStepCompleteEventArgs args）
        {
            if （ConstructionStepComplete != null）
            {
                ConstructionStepCo

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       2066  2007-03-07 08:34  china-code.net.txt

     文件       2066  2007-03-07 08:34  Mainchina-code.net.txt

    .......      1462  2009-06-13 19:12  MainDynamicGeometryLibraryActionsAbstractAction.cs

    .......      9639  2009-06-13 19:12  MainDynamicGeometryLibraryActionsActionManager.cs

    .......      4471  2009-06-13 19:12  MainDynamicGeometryLibraryActionsActions.cs

     文件       2066  2007-03-07 08:34  MainDynamicGeometryLibraryActionschina-code.net.txt

    .......       291  2009-06-13 19:12  MainDynamicGeometryLibraryActionsGeometryAction.cs

     文件       2066  2007-03-07 08:34  MainDynamicGeometryLibraryActionsHistorychina-code.net.txt

    .......       708  2009-06-13 19:12  MainDynamicGeometryLibraryActionsHistoryIActionHistory.cs

    .......      5024  2009-06-13 19:12  MainDynamicGeometryLibraryActionsHistorySimpleHistory.cs

    .......      1488  2009-06-13 19:12  MainDynamicGeometryLibraryActionsHistorySimpleHistoryNode.cs

     文件      13457  2007-03-07 08:49  MainDynamicGeometryLibraryActionsHistory说明.html

    .......      1208  2009-06-13 19:12  MainDynamicGeometryLibraryActionsIAction.cs

    .......      1813  2009-06-13 19:12  MainDynamicGeometryLibraryActionsIMultiAction.cs

    .......       596  2009-06-13 19:12  MainDynamicGeometryLibraryActionsTransaction.cs

    .......      2235  2009-06-13 19:12  MainDynamicGeometryLibraryActionsTransactionbase.cs

     文件      13457  2007-03-07 08:49  MainDynamicGeometryLibraryActions说明.html

    .......      7344  2009-06-13 19:12  MainDynamicGeometryLibraryBehaviorsBehavior.cs

    .......      1507  2009-06-13 19:12  MainDynamicGeometryLibraryBehaviorsBehaviorOrderer.cs

     文件       2066  2007-03-07 08:34  MainDynamicGeometryLibraryBehaviorschina-code.net.txt

    .......      5832  2009-06-13 19:12  MainDynamicGeometryLibraryBehaviorsDragger.cs

    .......      9773  2009-06-13 19:12  MainDynamicGeometryLibraryBehaviorsFigureCreator.cs

    .......      3990  2009-06-13 19:12  MainDynamicGeometryLibraryBehaviorsIconBuilder.cs

     文件      13457  2007-03-07 08:49  MainDynamicGeometryLibraryBehaviors说明.html

     文件       2066  2007-03-07 08:34  MainDynamicGeometryLibraryBinchina-code.net.txt

     文件       2066  2007-03-07 08:34  MainDynamicGeometryLibraryBinDebugchina-code.net.txt

     文件       2066  2007-03-07 08:34  MainDynamicGeometryLibraryBinDebugdechina-code.net.txt

     文件      15208  2008-11-12 20:05  MainDynamicGeometryLibraryBinDebugdeSystem.xml.Linq.resources.dll

     文件      13457  2007-03-07 08:49  MainDynamicGeometryLibraryBinDebugde说明.html

     文件     211968  2009-06-15 08:35  MainDynamicGeometryLibraryBinDebugDynamicGeometry.dll

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