protected override bool OnPreview(PrintOperationPreview preview, PrintContext context, Window parent)
{
previewSurface = new ImageSurface(Format.ARGB32, previewPageWidth, previewPageHeight);
context.SetCairoContext(new Context(previewSurface), previewDpiX, previewDpiY);
ErrorHandling.LogError(string.Format("Starting preview with page size: {0}x{1}, Dpi: {2}x{3}, Orientation: {4}",
previewPageWidth,
previewPageHeight,
previewDpiX,
previewDpiY,
context.PageSetup.Orientation), ErrorSeverity.Information);
return(true);
}