VertexShape.cs :  » PDF » PDF-Clown » it » stefanochizzolini » clown » documents » interaction » annotations » C# / CSharp Open Source

/*
  Copyright 2008 Stefano Chizzolini. http://clown.stefanochizzolini.it

  Contributors:
    * Stefano Chizzolini (original code developer, http://www.stefanochizzolini.it)

  This file should be part of the source code distribution of "PDF Clown library"
  (the Program): see the accompanying README files for more info.

  This Program is free software; you can redistribute it and/or modify it under
  the terms of the GNU General Public License as published by the Free Software
  Foundation; either version 2 of the License, or (at your option) any later version.

  This Program is distributed in the hope that it will be useful, but WITHOUT ANY
  WARRANTY, either expressed or implied; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the License for more details.

  You should have received a copy of the GNU General Public License along with this
  Program (see README files); if not, go to the GNU website (http://www.gnu.org/).

  Redistribution and use, with or without modification, are permitted provided that such
  redistributions retain the above copyright notice, license and disclaimer, along with
  this list of conditions.
*/

using it.stefanochizzolini.clown.bytes;
using it.stefanochizzolini.clown.documents;
using it.stefanochizzolini.clown.objects;

using System;
using System.Collections.Generic;
using System.Drawing;

namespace it.stefanochizzolini.clown.documents.interaction.annotations{
  /**
    <summary>Abstract vertexed shape annotation.</summary>
  */
  public abstract class VertexShape
    : Shape
  {
    #region dynamic
    #region constructors
    protected VertexShape(
      Page page,
      RectangleF box,
      PdfName subtype
      ) : base(
        page,
        box,
        subtype
        )
    {}

    protected VertexShape(
      PdfDirectObject baseObject,
      PdfIndirectObject container
      ) : base(baseObject,container)
    {}
    #endregion

    #region interface
    #region public
    public override object Clone(
      Document context
      )
    {throw new NotImplementedException();}

    /**
      <summary>Gets/Sets the coordinates of each vertex.</summary>
    */
    public IList<PointF> Vertices
    {
      get
      {
        /*
          NOTE: 'Vertices' entry MUST be present.
        */
        PdfArray verticesObject = (PdfArray)BaseDataObject[PdfName.Vertices];
        IList<PointF> vertices = new List<PointF>();
        double pageHeight = ((IPdfNumber)Page.Box[3]).RawValue;
        for(
          int index = 0,
            length = verticesObject.Count;
          index < length;
          index += 2
          )
        {
          double x = ((IPdfNumber)verticesObject[index]).RawValue;
          double y = pageHeight - ((IPdfNumber)verticesObject[index+1]).RawValue;
          vertices.Add(
            new PointF((float)x,(float)y)
            );
        }

        return vertices;
      }
      set
      {
        PdfArray verticesObject = new PdfArray();
        double pageHeight = ((IPdfNumber)Page.Box[3]).RawValue;
        foreach(PointF vertex in value)
        {
          verticesObject.Add(new PdfReal(vertex.X)); // x.
          verticesObject.Add(new PdfReal(pageHeight-vertex.Y)); // y.
        }

        BaseDataObject[PdfName.Vertices] = verticesObject;
      }
    }
    #endregion
    #endregion
    #endregion
  }
}