imageElement.cs :  » PDF » SharpPDF » sharpPDF » Elements » C# / CSharp Open Source

using System;
using System.IO;
using System.Drawing;
using System.Text;

using sharpPDF.Exceptions;
using sharpPDF.Enumerators;

namespace sharpPDF.Elements{
  /// <summary>
  /// A Class that implements a PDF image.
  /// </summary>
  public sealed class imageElement : pdfElement
  {

    private pdfImageReference _ObjectXReference;
    
    /// <summary>
    /// Image's Reference
    /// </summary>
    public pdfImageReference ObjectXReference
    {
      get
      {
          return _ObjectXReference;
      }
    }

    /// <summary>
    /// Class's constructor
    /// </summary>
    /// <param name="imageReference">Image's Reference</param>
    /// <param name="newCoordX">X position in the PDF document</param>
    /// <param name="newCoordY">Y position in the PDF document</param>
    public imageElement(pdfImageReference imageReference, int newCoordX, int newCoordY)
    {  
      _ObjectXReference = imageReference;
      _height = _ObjectXReference.height;
      _width = _ObjectXReference.width;  
      _coordX = newCoordX;
      _coordY = newCoordY;      
    }

    /// <summary>
    /// Class's constructor
    /// </summary>
    /// <param name="imageReference">Image's Reference</param>
    /// <param name="newCoordX">X position in the PDF document</param>
    /// <param name="newCoordY">Y position in the PDF document</param>
    /// <param name="newHeight">New height of the image</param>
    /// <param name="newWidth">New width of the image</param>
    public imageElement(pdfImageReference imageReference, int newCoordX, int newCoordY, int newHeight, int newWidth)
    {
      _ObjectXReference = imageReference;
      _height = newHeight;
      _width = newWidth;        
      _coordX = newCoordX;
      _coordY = newCoordY;    
    }

    /// <summary>
    /// Method that returns the PDF codes to write the image in the document
    /// </summary>
    /// <returns>String that contains PDF codes</returns>
    public override string getText()
    {
      StringBuilder resultImage = new StringBuilder();
            StringBuilder imageContent = new StringBuilder();            
            imageContent.Append("q" + Convert.ToChar(13) + Convert.ToChar(10));
      imageContent.Append(_width.ToString() + " 0 0 " + _height.ToString() + " " + _coordX.ToString() + " " + _coordY.ToString() + " cm" + Convert.ToChar(13) + Convert.ToChar(10));
            imageContent.Append("/I" + _ObjectXReference.ObjectID.ToString() + " Do" + Convert.ToChar(13) + Convert.ToChar(10));
            imageContent.Append("Q" + Convert.ToChar(13) + Convert.ToChar(10));      
            resultImage.Append(_objectID.ToString() + " 0 obj" + Convert.ToChar(13) + Convert.ToChar(10));
            resultImage.Append("<<" + Convert.ToChar(13) + Convert.ToChar(10));
            resultImage.Append("/Length " + imageContent.Length.ToString() + Convert.ToChar(13) + Convert.ToChar(10));
            resultImage.Append(">>" + Convert.ToChar(13) + Convert.ToChar(10));
            resultImage.Append("stream" + Convert.ToChar(13) + Convert.ToChar(10));
            resultImage.Append(imageContent.ToString());
            resultImage.Append("endstream" + Convert.ToChar(13) + Convert.ToChar(10));
            resultImage.Append("endobj" + Convert.ToChar(13) + Convert.ToChar(10));
      imageContent = null;
            return resultImage.ToString();            
    }

    /// <summary>
    /// Method that clones the element
    /// </summary>
    /// <returns>Cloned object</returns>
    public override object Clone()
    {
      return new imageElement(this._ObjectXReference, this._coordX, this._coordY, this._height, this._width);
    }

  }
}