public bool Export(Stream stream, string extension, Graphics referenceGraphics,
DiagramAlertHandler alerteDelegate, IDictionary<string, object> specificRendererParameters)
{
bool result = false;
if (extension.Equals(".emf", StringComparison.OrdinalIgnoreCase))
{
float scaleSave = _diagram.Scale;
try
{
_diagram.Scale = 1.0f;
_diagram.Layout(referenceGraphics);
IntPtr hdc = referenceGraphics.GetHdc();
Metafile metafile = new Metafile(stream, hdc);
Graphics graphics = Graphics.FromImage(metafile);
graphics.SmoothingMode = SmoothingMode.HighQuality;
_diagram.Layout(graphics);
DiagramGdiRenderer.Draw(_diagram, graphics);
referenceGraphics.ReleaseHdc(hdc);
metafile.Dispose();
graphics.Dispose();
result = true;
}
finally
{
_diagram.Scale = scaleSave;
_diagram.Layout(referenceGraphics);
}
}
else if (extension.Equals(".png", StringComparison.OrdinalIgnoreCase) ||
extension.Equals(".jpg", StringComparison.OrdinalIgnoreCase) ||
extension.Equals(".jpeg", StringComparison.OrdinalIgnoreCase))
{
Rectangle bbox = _diagram.ScaleRectangle(_diagram.BoundingBox);
bool bypassAlert = true;
if (alerteDelegate != null && (bbox.Width > 10000 || bbox.Height > 10000))
bypassAlert = alerteDelegate("Huge image generation",
String.Format("Do you agree to generate a {0}x{1} image?", bbox.Width, bbox.Height));
if (bypassAlert)
{
Bitmap bitmap = new Bitmap(bbox.Width, bbox.Height);
Graphics graphics = Graphics.FromImage(bitmap);
graphics.FillRectangle(Brushes.White, 0, 0, bbox.Width, bbox.Height);
DiagramGdiRenderer.Draw(_diagram, graphics);
if (extension.CompareTo(".png") == 0)
bitmap.Save(stream, ImageFormat.Png);
else
bitmap.Save(stream, ImageFormat.Jpeg);
result = true;
}
}
else if (extension.CompareTo(".txt") == 0 || extension.CompareTo(".csv") == 0)
{
float scaleSave = _diagram.Scale;
try
{
_diagram.Scale = 1.0f;
_diagram.Layout(referenceGraphics);
using (StreamWriter sw = new StreamWriter(stream))
{
using (DiagramTxtRenderer renderer = new DiagramTxtRenderer(sw))
{
renderer.IsCSV = extension.CompareTo(".csv") == 0;
IDictionary<string, object> parameters = specificRendererParameters as IDictionary<string, object>;
object o;
if (parameters != null && parameters.TryGetValue("TextOutputFields", out o))
renderer.TextOutputFields = o as IList<string>;
renderer.Render(_diagram);
}
sw.Close();
}
result = true;
}
finally
{
_diagram.Scale = scaleSave;
_diagram.Layout(referenceGraphics);
}
}
else //if (extension.CompareTo(".svg") == 0)
{
float scaleSave = _diagram.Scale;
try
{
_diagram.Scale = 1.0f;
_diagram.Layout(referenceGraphics);
using (StreamWriter streamWriter = new StreamWriter(stream))
{
using (DiagramSvgRenderer renderer = new DiagramSvgRenderer(streamWriter, referenceGraphics))
{
renderer.Render(_diagram);
}
streamWriter.Close();
}
result = true;
}
finally
{
_diagram.Scale = scaleSave;
_diagram.Layout(referenceGraphics);
}
}
return result;
}
public bool Export(Stream stream, string extension, Graphics referenceGraphics,
DiagramAlertHandler alerteDelegate, IDictionary <string, object> specificRendererParameters)
{
bool result = false;
if (extension.Equals(".emf", StringComparison.OrdinalIgnoreCase))
{
float scaleSave = _diagram.Scale;
try
{
_diagram.Scale = 1.0f;
_diagram.Layout(referenceGraphics);
IntPtr hdc = referenceGraphics.GetHdc();
Metafile metafile = new Metafile(stream, hdc);
Graphics graphics = Graphics.FromImage(metafile);
graphics.SmoothingMode = SmoothingMode.HighQuality;
_diagram.Layout(graphics);
DiagramGdiRenderer.Draw(_diagram, graphics);
referenceGraphics.ReleaseHdc(hdc);
metafile.Dispose();
graphics.Dispose();
result = true;
}
finally
{
_diagram.Scale = scaleSave;
_diagram.Layout(referenceGraphics);
}
}
else if (extension.Equals(".png", StringComparison.OrdinalIgnoreCase) ||
extension.Equals(".jpg", StringComparison.OrdinalIgnoreCase) ||
extension.Equals(".jpeg", StringComparison.OrdinalIgnoreCase))
{
Rectangle bbox = _diagram.ScaleRectangle(_diagram.BoundingBox);
bool bypassAlert = true;
if (alerteDelegate != null && (bbox.Width > 10000 || bbox.Height > 10000))
{
bypassAlert = alerteDelegate("Huge image generation",
String.Format("Do you agree to generate a {0}x{1} image?", bbox.Width, bbox.Height));
}
if (bypassAlert)
{
Bitmap bitmap = new Bitmap(bbox.Width, bbox.Height);
Graphics graphics = Graphics.FromImage(bitmap);
graphics.FillRectangle(Brushes.White, 0, 0, bbox.Width, bbox.Height);
DiagramGdiRenderer.Draw(_diagram, graphics);
if (extension.CompareTo(".png") == 0)
{
bitmap.Save(stream, ImageFormat.Png);
}
else
{
bitmap.Save(stream, ImageFormat.Jpeg);
}
result = true;
}
}
else if (extension.CompareTo(".txt") == 0 || extension.CompareTo(".csv") == 0)
{
float scaleSave = _diagram.Scale;
try
{
_diagram.Scale = 1.0f;
_diagram.Layout(referenceGraphics);
using (StreamWriter sw = new StreamWriter(stream))
{
using (DiagramTxtRenderer renderer = new DiagramTxtRenderer(sw))
{
renderer.IsCSV = extension.CompareTo(".csv") == 0;
IDictionary <string, object> parameters = specificRendererParameters as IDictionary <string, object>;
object o;
if (parameters != null)
{
if (parameters.TryGetValue("TextOutputFields", out o))
{
renderer.TextOutputFields = o as IList <string>;
}
if (parameters.TryGetValue("DisplayAttributes", out o) && o is bool)
{
renderer.DisplayAttributes = (bool)o;
}
if (parameters.TryGetValue("Schema", out o))
{
renderer.Schema = o as Schema;
}
}
renderer.Render(_diagram);
}
sw.Close();
}
result = true;
}
finally
{
_diagram.Scale = scaleSave;
_diagram.Layout(referenceGraphics);
}
}
else //if (extension.CompareTo(".svg") == 0)
{
float scaleSave = _diagram.Scale;
try
{
_diagram.Scale = 1.0f;
_diagram.Layout(referenceGraphics);
using (StreamWriter streamWriter = new StreamWriter(stream))
{
using (DiagramSvgRenderer renderer = new DiagramSvgRenderer(streamWriter, referenceGraphics))
{
renderer.Render(_diagram);
}
streamWriter.Close();
}
result = true;
}
finally
{
_diagram.Scale = scaleSave;
_diagram.Layout(referenceGraphics);
}
}
return(result);
}