/// <summary>
/// Converts the specified value to double?.
/// If the value does not exist, the function returns null.
/// If the value is not convertible, the function throws an InvalidCastException.
/// If the index is out of range, the function throws an ArgumentOutOfRangeException.
/// </summary>
public double?GetNullableReal(int index)
{
if (index < 0 || index >= Count)
{
throw new ArgumentOutOfRangeException("index", index, PSSR.IndexOutOfRange);
}
object obj = this[index];
if (obj == null)
{
return(null);
}
PdfNull @null = obj as PdfNull;
if (@null != null)
{
return(null);
}
PdfNullObject nullObject = obj as PdfNullObject;
if (nullObject != null)
{
return(null);
}
PdfReal real = obj as PdfReal;
if (real != null)
{
return(real.Value);
}
PdfRealObject realObject = obj as PdfRealObject;
if (realObject != null)
{
return(realObject.Value);
}
PdfInteger integer = obj as PdfInteger;
if (integer != null)
{
return(integer.Value);
}
PdfIntegerObject integerObject = obj as PdfIntegerObject;
if (integerObject != null)
{
return(integerObject.Value);
}
throw new InvalidCastException("GetReal: Object is not a number.");
}
/// <summary>
/// Writes the specified value to the PDF stream.
/// </summary>
public void Write(PdfReal value)
{
WriteSeparator(CharCat.Character);
WriteRaw(value.Value.ToString("0.###", CultureInfo.InvariantCulture));
this.lastCat = CharCat.Character;
}
/// <summary>
/// Sets the entry to a direct double value.
/// </summary>
public void SetReal(string key, double value)
{
this[key] = new PdfReal(value);
}
/// <summary>
/// Converts the specified value to double.
/// If the value not exists, the function returns 0.
/// If the value is not convertible, the function throws an InvalidCastException.
/// </summary>
public double GetReal(string key, bool create)
{
object obj = this[key];
if (obj == null)
{
if (create)
this[key] = new PdfReal();
return 0;
}
if (obj is PdfReference)
obj = ((PdfReference)obj).Value;
if (obj is PdfReal)
return ((PdfReal)obj).Value;
else if (obj is PdfRealObject)
return ((PdfRealObject)obj).Value;
else if (obj is PdfInteger)
return ((PdfInteger)obj).Value;
else if (obj is PdfIntegerObject)
return ((PdfIntegerObject)obj).Value;
throw new InvalidCastException("GetReal: Object is not a number.");
}