/// <summary>
/// Initializes a new instance of the <c>UnderlayDefinition</c> class.
/// </summary>
/// <param name="name">Underlay name.</param>
/// <param name="file">Underlay file name with full or relative path.</param>
/// <param name="type">Underlay type.</param>
/// <remarks>
/// The file extension must match the underlay type.
/// </remarks>
protected UnderlayDefinition(string name, string file, UnderlayType type)
: base(name, DxfObjectCode.UnderlayDefinition, false)
{
if (string.IsNullOrEmpty(file))
{
throw new ArgumentNullException(nameof(file));
}
if (file.IndexOfAny(Path.GetInvalidPathChars()) == 0)
{
throw new ArgumentException("File path contains invalid characters.", nameof(file));
}
string ext = Path.GetExtension(file);
switch (type)
{
case UnderlayType.DGN:
if (!ext.Equals(".DGN", StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentException("The underlay type and the file extension do not match.", nameof(file));
}
this.CodeName = DxfObjectCode.UnderlayDgnDefinition;
break;
case UnderlayType.DWF:
if (!ext.Equals(".DWF", StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentException("The underlay type and the file extension do not match.", nameof(file));
}
this.CodeName = DxfObjectCode.UnderlayDwfDefinition;
break;
case UnderlayType.PDF:
if (!ext.Equals(".PDF", StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentException("The underlay type and the file extension do not match.", nameof(file));
}
this.CodeName = DxfObjectCode.UnderlayPdfDefinition;
break;
}
this.file = file;
this.type = type;
}
/// <summary>
/// Initializes a new instance of the <c>UnderlayDefinition</c> class.
/// </summary>
/// <param name="fileName">Underlay file name with full or relative path.</param>
/// <param name="name">Underlay name.</param>
/// <param name="type">Underlay type.</param>
protected UnderlayDefinition(string fileName, string name, UnderlayType type)
: base(name, DxfObjectCode.UnderlayDefinition, false)
{
this.fileName = fileName;
this.type = type;
switch (type)
{
case UnderlayType.DGN:
this.codeName = DxfObjectCode.UnderlayDgnDefinition;
break;
case UnderlayType.DWF:
this.codeName = DxfObjectCode.UnderlayDwfDefinition;
break;
case UnderlayType.PDF:
this.codeName = DxfObjectCode.UnderlayPdfDefinition;
break;
}
}
/// <summary>
/// Initializes a new instance of the <c>UnderlayDefinition</c> class.
/// </summary>
/// <param name="name">Underlay name.</param>
/// <param name="file">Underlay file name with full or relative path.</param>
/// <param name="type">Underlay type.</param>
protected UnderlayDefinition(string name, string file, UnderlayType type)
: base(name, DxfObjectCode.UnderlayDefinition, false)
{
this.file = file;
this.type = type;
switch (type)
{
case UnderlayType.DGN:
CodeName = DxfObjectCode.UnderlayDgnDefinition;
break;
case UnderlayType.DWF:
CodeName = DxfObjectCode.UnderlayDwfDefinition;
break;
case UnderlayType.PDF:
CodeName = DxfObjectCode.UnderlayPdfDefinition;
break;
}
}
private UnderlayDefinition ReadUnderlayDefinition(UnderlayType type)
{
string handle = null;
string page = string.Empty;
string ownerHandle = null;
string fileName = null;
string name = null;
this.chunk.Next();
while (this.chunk.Code != 0)
{
switch (this.chunk.Code)
{
case 5:
handle = this.chunk.ReadHex();
this.chunk.Next();
break;
case 1:
fileName = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
this.chunk.Next();
break;
case 2:
page = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
this.chunk.Next();
break;
case 330:
ownerHandle = this.chunk.ReadHex();
this.chunk.Next();
break;
default:
this.chunk.Next();
break;
}
}
if (ownerHandle != null)
{
DictionaryObject underlayDefDict = this.dictionaries[ownerHandle];
if (handle == null)
throw new NullReferenceException("Null handle in underlay definition dictionary.");
name = underlayDefDict.Entries[handle];
}
UnderlayDefinition underlayDef = null;
switch (type)
{
case UnderlayType.DGN:
underlayDef = new UnderlayDgnDefinition(fileName, name)
{
Handle = handle,
Layout = page
};
break;
case UnderlayType.DWF:
underlayDef = new UnderlayDwfDefinition(fileName, name)
{
Handle = handle
};
break;
case UnderlayType.PDF:
underlayDef = new UnderlayPdfDefinition(fileName, name)
{
Handle = handle,
Page = page
};
break;
}
if (underlayDef == null)
throw new NullReferenceException("Underlay reference definition.");
this.underlayDefHandles.Add(underlayDef.Handle, underlayDef);
return underlayDef;
}
