public static BitmapSource CreateImage(Controls.DesignerCanvas canvas, double dpiX, double dpiY)
{
var image = new RenderTargetBitmap((int)(canvas.ExtentWidth * dpiX / WpfDpi),
(int)(canvas.ExtentHeight * dpiX / WpfDpi), dpiX, dpiY,
PixelFormats.Pbgra32);
canvas.RenderImage(image);
return(image);
}
public static void ExportImage(Controls.DesignerCanvas canvas, Stream s, BitmapEncoder encoder, double dpiX, double dpiY)
{
if (canvas == null)
{
throw new ArgumentNullException(nameof(canvas));
}
if (s == null)
{
throw new ArgumentNullException(nameof(s));
}
if (encoder == null)
{
throw new ArgumentNullException(nameof(encoder));
}
var image = CreateImage(canvas, dpiX, dpiY);
encoder.Frames.Add(BitmapFrame.Create(image));
encoder.Save(s);
}
public static void ExportImage(Controls.DesignerCanvas canvas, string fileName, double dpiX, double dpiY)
{
if (canvas == null)
{
throw new ArgumentNullException(nameof(canvas));
}
if (string.IsNullOrEmpty(fileName))
{
throw new ArgumentException("Argument is null or empty", nameof(fileName));
}
var encoder = EncoderFromFileName(fileName);
if (encoder == null)
{
throw new NotSupportedException("Extension of specified fileName is not supported.");
}
using (var fs = File.OpenWrite(fileName))
{
ExportImage(canvas, fs, encoder, dpiX, dpiY);
}
}
