private void FileExportImageMenuItem_Click(object sender, EventArgs e)
{
using (var dialog = new SaveFileDialog())
{
dialog.Filter = "PNG Images|*.png|JPEG Images|*.jpg|BMP Images|*.bmp|Enhanced Metafiles (EMF)|*.emf|All Files|*.*||";
dialog.Title = "Export Image";
dialog.InitialDirectory = PathHelper.SafeGetDirectoryName(Settings.LastExportImageFileName);
if (dialog.ShowDialog() == DialogResult.OK)
{
Settings.LastExportImageFileName = dialog.InitialDirectory;
var format = ImageFormat.Png;
var ext = Path.GetExtension(dialog.FileName);
if (StringComparer.InvariantCultureIgnoreCase.Compare(ext, ".jpg") == 0 ||
StringComparer.InvariantCultureIgnoreCase.Compare(ext, ".jpeg") == 0)
{
format = ImageFormat.Jpeg;
}
else if (StringComparer.InvariantCultureIgnoreCase.Compare(ext, ".bmp") == 0)
{
format = ImageFormat.Bmp;
}
else if (StringComparer.InvariantCultureIgnoreCase.Compare(ext, ".emf") == 0)
{
format = ImageFormat.Emf;
}
var size = m_canvas.ComputeCanvasBounds(true).Size *m_canvas.ZoomFactor;
size.X = Numeric.Clamp(size.X, 16, 8192);
size.Y = Numeric.Clamp(size.Y, 16, 8192);
try
{
if (format == ImageFormat.Emf)
{
// export as a metafile
using (var nativeGraphics = Graphics.FromHwnd(m_canvas.Handle))
{
using (var stream = new MemoryStream())
{
try
{
var dc = nativeGraphics.GetHdc();
using (var metafile = new Metafile(stream, dc))
{
using (var imageGraphics = Graphics.FromImage(metafile))
{
using (var graphics = XGraphics.FromGraphics(imageGraphics, new XSize(size.X, size.Y)))
{
m_canvas.Draw(graphics, true, size.X, size.Y);
}
}
var handle = metafile.GetHenhmetafile();
var copy = CopyEnhMetaFile(handle, dialog.FileName);
DeleteEnhMetaFile(copy);
}
}
finally
{
nativeGraphics.ReleaseHdc();
}
}
}
}
else
{
// export as an image
using (var bitmap = new Bitmap((int)Math.Ceiling(size.X), (int)Math.Ceiling(size.Y)))
{
using (var imageGraphics = Graphics.FromImage(bitmap))
{
using (var graphics = XGraphics.FromGraphics(imageGraphics, new XSize(size.X, size.Y)))
{
m_canvas.Draw(graphics, true, size.X, size.Y);
}
}
bitmap.Save(dialog.FileName, format);
}
}
}
catch (Exception ex)
{
MessageBox.Show(Program.MainForm, string.Format("There was a problem exporting the map:\n\n{0}", ex.Message), Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
