// write a metafile stream to the output stream in PNG format
internal static void SaveMetafileToImageStream(MemoryStream metafileStream, Stream imageStream)
{
SystemDrawingExtensionMethods extensions = AssemblyHelper.ExtensionsForSystemDrawing(force: true);
if (extensions != null)
{
extensions.SaveMetafileToImageStream(metafileStream, imageStream);
}
}
// load the extension class for System.Drawing
internal static SystemDrawingExtensionMethods ExtensionsForSystemDrawing(bool force = false)
{
if (_systemDrawingExtensionMethods == null &&
(force || IsLoaded(UncommonAssembly.System_Drawing)))
{
_systemDrawingExtensionMethods = (SystemDrawingExtensionMethods)LoadExtensionFor("SystemDrawing");
}
return(_systemDrawingExtensionMethods);
}
internal static IntPtr GetHBitmap(object data, out int width, out int height)
{
SystemDrawingExtensionMethods extensions = AssemblyHelper.ExtensionsForSystemDrawing(force: true);
if (extensions != null)
{
return(extensions.GetHBitmap(data, out width, out height));
}
width = height = 0;
return(IntPtr.Zero);
}
internal static IntPtr GetHBitmapFromBitmap(object data)
{
SystemDrawingExtensionMethods extensions = AssemblyHelper.ExtensionsForSystemDrawing();
return((extensions != null) ? extensions.GetHBitmapFromBitmap(data) : IntPtr.Zero);
}
// Get a bitmap from the given data (either BitmapSource or Bitmap)
internal static object GetBitmap(object data)
{
SystemDrawingExtensionMethods extensions = AssemblyHelper.ExtensionsForSystemDrawing(force: true);
return((extensions != null) ? extensions.GetBitmap(data) : null);
}
// Get the metafile from the handle of the enhanced metafile.
internal static Object GetMetafileFromHemf(IntPtr hMetafile)
{
SystemDrawingExtensionMethods extensions = AssemblyHelper.ExtensionsForSystemDrawing(force: true);
return((extensions != null) ? extensions.GetMetafileFromHemf(hMetafile) : null);
}
internal static IntPtr GetHandleFromMetafile(Object data)
{
SystemDrawingExtensionMethods extensions = AssemblyHelper.ExtensionsForSystemDrawing();
return((extensions != null) ? extensions.GetHandleFromMetafile(data) : IntPtr.Zero);
}
// return true if the data is a graphics metafile
internal static bool IsMetafile(object data)
{
SystemDrawingExtensionMethods extensions = AssemblyHelper.ExtensionsForSystemDrawing();
return((extensions != null) ? extensions.IsMetafile(data) : false);
}
internal static object GetBitmapFromBitmapSource(object source)
{
SystemDrawingExtensionMethods extensions = AssemblyHelper.ExtensionsForSystemDrawing(force: true);
return((extensions != null) ? extensions.GetBitmapFromBitmapSource(source) : null);
}
// return a new default-printing permission
internal static CodeAccessPermission NewDefaultPrintingPermission()
{
SystemDrawingExtensionMethods extensions = AssemblyHelper.ExtensionsForSystemDrawing(force: true);
return((extensions != null) ? extensions.NewDefaultPrintingPermission() : null);
}
// return a stream for the ExifUserComment in the given Gif
internal static Stream GetCommentFromGifStream(Stream stream)
{
SystemDrawingExtensionMethods extensions = AssemblyHelper.ExtensionsForSystemDrawing(force: true);
return((extensions != null) ? extensions.GetCommentFromGifStream(stream) : null);
}
internal static IntPtr ConvertMetafileToHBitmap(IntPtr handle)
{
SystemDrawingExtensionMethods extensions = AssemblyHelper.ExtensionsForSystemDrawing(force: true);
return((extensions != null) ? extensions.ConvertMetafileToHBitmap(handle) : IntPtr.Zero);
}
// load the extension class for System.Drawing
internal static SystemDrawingExtensionMethods ExtensionsForSystemDrawing(bool force=false)
{
if (_systemDrawingExtensionMethods == null &&
(force || IsLoaded(UncommonAssembly.System_Drawing)))
{
_systemDrawingExtensionMethods = (SystemDrawingExtensionMethods)LoadExtensionFor("SystemDrawing");
}
return _systemDrawingExtensionMethods;
}
