// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
// Dennis Hayes (dennish@raytek.com)
// Jordi Mas i Hernandez (jordi@ximian.com)
+// Sebastien Pouliot <sebastien@ximian.com>
//
// (C) 2002-4 Ximian, Inc. http://www.ximian.com
-//
-
-//
-// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
+// Copyright (C) 2004,2006 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
-using System;
using System.ComponentModel;
namespace System.Drawing.Imaging {
[TypeConverter (typeof (ImageFormatConverter))]
- public sealed class ImageFormat
- {
+ public sealed class ImageFormat {
+
private Guid guid;
- private static ImageFormat BmpImageFormat = new ImageFormat (new Guid ("b96b3cab-0728-11d3-9d7b-0000f81ef32e"));
- private static ImageFormat EmfImageFormat = new ImageFormat (new Guid ("b96b3cac-0728-11d3-9d7b-0000f81ef32e"));
- private static ImageFormat ExifImageFormat = new ImageFormat (new Guid ("b96b3cb2-0728-11d3-9d7b-0000f81ef32e"));
- private static ImageFormat GifImageFormat = new ImageFormat (new Guid ("b96b3cb0-0728-11d3-9d7b-0000f81ef32e"));
- private static ImageFormat TiffImageFormat = new ImageFormat (new Guid ("b96b3cb1-0728-11d3-9d7b-0000f81ef32e"));
- private static ImageFormat PngImageFormat = new ImageFormat(new Guid("b96b3caf-0728-11d3-9d7b-0000f81ef32e"));
- private static ImageFormat MemoryBmpImageFormat = new ImageFormat (new Guid ("b96b3caa-0728-11d3-9d7b-0000f81ef32e"));
- private static ImageFormat IconImageFormat = new ImageFormat (new Guid ("b96b3cb5-0728-11d3-9d7b-0000f81ef32e"));
- private static ImageFormat JpegImageFormat = new ImageFormat(new Guid("b96b3cae-0728-11d3-9d7b-0000f81ef32e"));
- private static ImageFormat WmfImageFormat = new ImageFormat (new Guid ("b96b3cad-0728-11d3-9d7b-0000f81ef32e"));
+ private string name;
+
+ private const string BmpGuid = "b96b3cab-0728-11d3-9d7b-0000f81ef32e";
+ private const string EmfGuid = "b96b3cac-0728-11d3-9d7b-0000f81ef32e";
+ private const string ExifGuid = "b96b3cb2-0728-11d3-9d7b-0000f81ef32e";
+ private const string GifGuid = "b96b3cb0-0728-11d3-9d7b-0000f81ef32e";
+ private const string TiffGuid = "b96b3cb1-0728-11d3-9d7b-0000f81ef32e";
+ private const string PngGuid = "b96b3caf-0728-11d3-9d7b-0000f81ef32e";
+ private const string MemoryBmpGuid = "b96b3caa-0728-11d3-9d7b-0000f81ef32e";
+ private const string IconGuid = "b96b3cb5-0728-11d3-9d7b-0000f81ef32e";
+ private const string JpegGuid = "b96b3cae-0728-11d3-9d7b-0000f81ef32e";
+ private const string WmfGuid = "b96b3cad-0728-11d3-9d7b-0000f81ef32e";
+
+ // lock(this) is bad
+ // http://msdn.microsoft.com/library/en-us/dnaskdr/html/askgui06032003.asp?frame=true
+ private static object locker = new object ();
+
+ private static ImageFormat BmpImageFormat;
+ private static ImageFormat EmfImageFormat;
+ private static ImageFormat ExifImageFormat;
+ private static ImageFormat GifImageFormat;
+ private static ImageFormat TiffImageFormat;
+ private static ImageFormat PngImageFormat;
+ private static ImageFormat MemoryBmpImageFormat;
+ private static ImageFormat IconImageFormat;
+ private static ImageFormat JpegImageFormat;
+ private static ImageFormat WmfImageFormat;
// constructors
- public ImageFormat (Guid guid)
+ public ImageFormat (Guid guid)
{
+ this.name = null;
this.guid = guid;
}
+
+ private ImageFormat (string name, string guid)
+ {
+ this.name = name;
+ this.guid = new Guid (guid);
+ }
// methods
- public override bool Equals(object o) {
-
- if (o is ImageFormat)
- if ( ((ImageFormat)o).Guid.Equals(this.Guid))
- return true;
- return false;
+ public override bool Equals (object o)
+ {
+ ImageFormat f = (o as ImageFormat);
+ if (f == null)
+ return false;
+ return f.Guid.Equals (guid);
}
- public override int GetHashCode()
+ public override int GetHashCode ()
+ {
+ return guid.GetHashCode ();
+ }
+
+
+ public override string ToString ()
{
- return guid.GetHashCode();
- }
-
-
- public override string ToString()
- {
- if (Guid.Equals (Bmp.Guid))
- return "Bmp";
-
- if (Guid.Equals (Emf.Guid))
- return "Emf";
-
- if (Guid.Equals (Gif.Guid))
- return "Gif";
-
- if (Guid.Equals (Jpeg.Guid))
- return "Jpeg";
-
- if (Guid.Equals (MemoryBmp.Guid))
- return "MemoryBmp";
-
- if (Guid.Equals (Png.Guid))
- return "Png";
-
- if (Guid.Equals (Tiff.Guid))
- return "Tiff";
-
- if (Guid.Equals (Wmf.Guid))
- return "Wmf";
-
- // Default
- return guid.ToString ();
+ if (name != null)
+ return name;
+ return ("[ImageFormat: " + guid.ToString () + "]");
}
// properties
- public Guid Guid
- {
+ public Guid Guid {
get { return guid; }
}
- public static ImageFormat Bmp
- {
- get { return BmpImageFormat; }
+ public static ImageFormat Bmp {
+ get {
+ lock (locker) {
+ if (BmpImageFormat == null)
+ BmpImageFormat = new ImageFormat ("Bmp", BmpGuid);
+ return BmpImageFormat;
+ }
+ }
}
-
- public static ImageFormat Emf
- {
- get { return EmfImageFormat; }
+ public static ImageFormat Emf {
+ get {
+ lock (locker) {
+ if (EmfImageFormat == null)
+ EmfImageFormat = new ImageFormat ("Emf", EmfGuid);
+ return EmfImageFormat;
+ }
+ }
}
- public static ImageFormat Exif
- {
- get { return ExifImageFormat; }
+ public static ImageFormat Exif {
+ get {
+ lock (locker) {
+ if (ExifImageFormat == null)
+ ExifImageFormat = new ImageFormat ("Exif", ExifGuid);
+ return ExifImageFormat;
+ }
+ }
}
- public static ImageFormat Gif
- {
- get { return GifImageFormat; }
+ public static ImageFormat Gif {
+ get {
+ lock (locker) {
+ if (GifImageFormat == null)
+ GifImageFormat = new ImageFormat ("Gif", GifGuid);
+ return GifImageFormat;
+ }
+ }
}
- public static ImageFormat Icon
- {
- get { return IconImageFormat; }
+ public static ImageFormat Icon {
+ get {
+ lock (locker) {
+ if (IconImageFormat == null)
+ IconImageFormat = new ImageFormat ("Icon", IconGuid);
+ return IconImageFormat;
+ }
+ }
}
- public static ImageFormat Jpeg
- {
- get { return JpegImageFormat; }
+ public static ImageFormat Jpeg {
+ get {
+ lock (locker) {
+ if (JpegImageFormat == null)
+ JpegImageFormat = new ImageFormat ("Jpeg", JpegGuid);
+ return JpegImageFormat;
+ }
+ }
}
- public static ImageFormat MemoryBmp
- {
- get { return MemoryBmpImageFormat; }
+ public static ImageFormat MemoryBmp {
+ get {
+ lock (locker) {
+ if (MemoryBmpImageFormat == null)
+ MemoryBmpImageFormat = new ImageFormat ("MemoryBMP", MemoryBmpGuid);
+ return MemoryBmpImageFormat;
+ }
+ }
}
- public static ImageFormat Png
- {
- get { return PngImageFormat; }
+ public static ImageFormat Png {
+ get {
+ lock (locker) {
+ if (PngImageFormat == null)
+ PngImageFormat = new ImageFormat ("Png", PngGuid);
+ return PngImageFormat;
+ }
+ }
}
- public static ImageFormat Tiff
- {
- get { return TiffImageFormat; }
+ public static ImageFormat Tiff {
+ get {
+ lock (locker) {
+ if (TiffImageFormat == null)
+ TiffImageFormat = new ImageFormat ("Tiff", TiffGuid);
+ return TiffImageFormat;
+ }
+ }
}
- public static ImageFormat Wmf
- {
- get { return WmfImageFormat; }
+ public static ImageFormat Wmf {
+ get {
+ lock (locker) {
+ if (WmfImageFormat == null)
+ WmfImageFormat = new ImageFormat ("Wmf", WmfGuid);
+ return WmfImageFormat;
+ }
+ }
}
-
}
-
}