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上传时间: 2009-05-21
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sing System; using System.Drawing; using System.Windows.Forms; namespace Netron.Diagramming.Core { /// /// Abstract base class for a connection /// public abstract partial class ConnectionBase : DiagramEntityBase, IConnection { #region Fields /// /// the start connector /// private IConnector mFrom; /// /// the end connector /// private IConnector mTo; #endregion #region Properties /// /// The initial or start connector /// public IConnector From { get{return mFrom;} set{mFrom = value;} } /// /// The final or end connector /// /// /// /// Connection connection /// /// public IConnector To { get{return mTo;} set{mTo = value;} } #endregion #region Constructor /// /// Default constructor /// /// protected ConnectionBase(IModel site) : base(site) { PenStyle = ArtPallet.GetDefaultPenStyle(); } /// /// Initializes a new instance of the class. /// /// From. /// To. protected ConnectionBase(Point from, Point to) : base() { this.mFrom = new Connector(from); this.mFrom.Parent = this; this.mTo = new Connector(to); this.mTo.Parent = this; PenStyle = ArtPallet.GetDefaultPenStyle(); } public ConnectionBase() : base() { } #endregion #region Methods /// /// Paints the entity on the control /// /// public override void Paint(Graphics g) { if (g == null) throw new ArgumentNullException("The Graphics object is 'null'"); From.Paint(g); To.Paint(g); } /// /// The custom menu to be added to the base menu of this entity /// /// public override MenuItem[] ShapeMenu() { return null; } /// /// Invalidates the entity /// public override void Invalidate() { Rectangle r = Rectangle; r.Offset(-10, -10); r.Inflate(40, 40); if (Model != null) Model.RaiseOnInvalidateRectangle(r); } #endregion ...展开收缩
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