/// <summary>
/// Gets an enhanced metafile image for the current GraphPane.
/// </summary>
/// <seealso cref="GetImage()"/>
/// <seealso cref="GetImage(int,int,float)"/>
/// <seealso cref="GetMetafile(int,int)"/>
public Metafile GetMetafile()
{
Bitmap bm = new Bitmap( 1, 1 );
using ( Graphics g = Graphics.FromImage( bm ) )
{
IntPtr hdc = g.GetHdc();
Stream stream = new MemoryStream();
Metafile metafile = new Metafile( stream, hdc, _rect,
MetafileFrameUnit.Pixel, EmfType.EmfOnly );
using (IGraphics metafileGraphics = new GdiGraphics(Graphics.FromImage(metafile)))
{
metafileGraphics.TranslateTransform( -_rect.Left, -_rect.Top );
metafileGraphics.PageUnit = GraphicsUnit.Pixel;
PointF P = new PointF( _rect.Width, _rect.Height );
PointF[] PA = new[] { P };
metafileGraphics.TransformPoints( CoordinateSpace.Page, CoordinateSpace.Device, PA );
//metafileGraphics.PageScale = 1f;
// output
Draw( metafileGraphics );
g.ReleaseHdc( hdc );
return metafile;
}
}
}
/// <summary>
/// Gets an enhanced metafile image for the current GraphPane, scaled to the specified size.
/// </summary>
/// <remarks>
/// By definition, a Metafile is a vector drawing, and therefore scaling should not matter.
/// However, this method is provided because certain options in Zedgraph, such as
/// <see cref="IsFontsScaled" /> are affected by the size of the expected image.
/// </remarks>
/// <param name="width">The "effective" scaled width of the bitmap in pixels</param>
/// <param name="height">The "effective" scaled height of the bitmap in pixels</param>
/// <param name="isAntiAlias">true to use anti-aliased drawing mode, false otherwise</param>
/// <seealso cref="GetImage()"/>
/// <seealso cref="GetImage(int,int,float)"/>
/// <seealso cref="GetMetafile()"/>
public Metafile GetMetafile( int width, int height, bool isAntiAlias )
{
Bitmap bm = new Bitmap( 1, 1 );
using ( Graphics g = Graphics.FromImage( bm ) )
{
IntPtr hdc = g.GetHdc();
Stream stream = new MemoryStream();
Metafile metafile = new Metafile( stream, hdc, _rect,
MetafileFrameUnit.Pixel, EmfType.EmfPlusDual );
g.ReleaseHdc( hdc );
using (IGraphics metafileGraphics = new GdiGraphics(Graphics.FromImage(metafile)))
{
//metafileGraphics.TranslateTransform( -_rect.Left, -_rect.Top );
metafileGraphics.PageUnit = System.Drawing.GraphicsUnit.Pixel;
PointF P = new PointF( width, height );
PointF[] PA = new PointF[] { P };
metafileGraphics.TransformPoints( CoordinateSpace.Page, CoordinateSpace.Device, PA );
//metafileGraphics.PageScale = 1f;
// output
MakeImage( metafileGraphics, width, height, isAntiAlias );
//this.Draw( metafileGraphics );
return metafile;
}
}
}