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//
// System.Drawing.Imaging.ImageFormat.cs
//
// Authors:
// Everaldo Canuto (everaldo.canuto@bol.com.br)
// 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) 2004,2006 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
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.ComponentModel;
namespace System.Drawing.Imaging {
[TypeConverter (typeof (ImageFormatConverter))]
public sealed class ImageFormat {
private Guid guid;
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)
{
this.guid = guid;
}
private ImageFormat (string name, string guid)
{
this.name = name;
this.guid = new Guid (guid);
}
// methods
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 ()
{
return guid.GetHashCode ();
}
public override string ToString ()
{
if (name != null)
return name;
return ("[ImageFormat: " + guid.ToString () + "]");
}
// properties
public Guid Guid {
get { return guid; }
}
public static ImageFormat Bmp {
get {
lock (locker) {
if (BmpImageFormat == null)
BmpImageFormat = new ImageFormat ("Bmp", BmpGuid);
return BmpImageFormat;
}
}
}
public static ImageFormat Emf {
get {
lock (locker) {
if (EmfImageFormat == null)
EmfImageFormat = new ImageFormat ("Emf", EmfGuid);
return EmfImageFormat;
}
}
}
public static ImageFormat Exif {
get {
lock (locker) {
if (ExifImageFormat == null)
ExifImageFormat = new ImageFormat ("Exif", ExifGuid);
return ExifImageFormat;
}
}
}
public static ImageFormat Gif {
get {
lock (locker) {
if (GifImageFormat == null)
GifImageFormat = new ImageFormat ("Gif", GifGuid);
return GifImageFormat;
}
}
}
public static ImageFormat Icon {
get {
lock (locker) {
if (IconImageFormat == null)
IconImageFormat = new ImageFormat ("Icon", IconGuid);
return IconImageFormat;
}
}
}
public static ImageFormat Jpeg {
get {
lock (locker) {
if (JpegImageFormat == null)
JpegImageFormat = new ImageFormat ("Jpeg", JpegGuid);
return JpegImageFormat;
}
}
}
public static ImageFormat MemoryBmp {
get {
lock (locker) {
if (MemoryBmpImageFormat == null)
MemoryBmpImageFormat = new ImageFormat ("MemoryBMP", MemoryBmpGuid);
return MemoryBmpImageFormat;
}
}
}
public static ImageFormat Png {
get {
lock (locker) {
if (PngImageFormat == null)
PngImageFormat = new ImageFormat ("Png", PngGuid);
return PngImageFormat;
}
}
}
public static ImageFormat Tiff {
get {
lock (locker) {
if (TiffImageFormat == null)
TiffImageFormat = new ImageFormat ("Tiff", TiffGuid);
return TiffImageFormat;
}
}
}
public static ImageFormat Wmf {
get {
lock (locker) {
if (WmfImageFormat == null)
WmfImageFormat = new ImageFormat ("Wmf", WmfGuid);
return WmfImageFormat;
}
}
}
}
}
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