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);
}
}
}
}
private static void Annotate(XGraphics graphics, Palette palette, LineSegment lineSegment, TextBlock text, StringAlignment alignment)
{
Vector point;
var delta = lineSegment.Delta;
switch (alignment)
{
case StringAlignment.Near:
default:
point = lineSegment.Start;
delta.Negate();
break;
case StringAlignment.Center:
point = lineSegment.Mid;
break;
case StringAlignment.Far:
point = lineSegment.End;
break;
}
var bounds = new Rect(point, Vector.Zero);
bounds.Inflate(Settings.TextOffsetFromConnection);
var angle = (float)-(Math.Atan2(delta.Y, delta.X) / Math.PI * 180.0);
var compassPoint = CompassPoint.East;
if (Numeric.InRange(angle, 0, 45))
{
compassPoint = CompassPoint.NorthWest;
}
else if (Numeric.InRange(angle, 45, 90))
{
compassPoint = CompassPoint.SouthEast;
}
else if (Numeric.InRange(angle, 90, 135))
{
compassPoint = CompassPoint.SouthWest;
}
else if (Numeric.InRange(angle, 135, 180))
{
compassPoint = CompassPoint.NorthEast;
}
else if (Numeric.InRange(angle, 0, -45))
{
compassPoint = CompassPoint.NorthEast;
}
else if (Numeric.InRange(angle, -45, -90))
{
compassPoint = CompassPoint.NorthEast;
}
else if (Numeric.InRange(angle, -90, -135))
{
compassPoint = CompassPoint.NorthWest;
}
else if (Numeric.InRange(angle, -135, -180))
{
compassPoint = CompassPoint.SouthEast;
}
var pos = bounds.GetCorner(compassPoint);
XStringFormat format = new XStringFormat();
Drawing.SetAlignmentFromCardinalOrOrdinalDirection(format, compassPoint);
if (alignment == StringAlignment.Center && Numeric.InRange(angle, -10, 10))
{
// HACK: if the line segment is pretty horizontal and we're drawing mid-line text,
// move text below the line to get it out of the way of any labels at the ends,
// and center the text so it fits onto a line between two proximal rooms.
pos = bounds.GetCorner(CompassPoint.South);
format.Alignment = XStringAlignment.Center;
format.LineAlignment = XLineAlignment.Near;
}
text.Draw(graphics, Settings.LineFont, palette.LineBrush, pos, Vector.Zero, format);
}
