public void SaveToPDF(string fileName)
{
RenderTargetBitmap renderBitmap = new RenderTargetBitmap(
(int)GraphCanvas.ActualWidth, (int)GraphCanvas.ActualHeight,
96d, 96d, PixelFormats.Pbgra32);
GraphCanvas.Measure(new Size((int)GraphCanvas.ActualWidth, (int)GraphCanvas.ActualHeight));
GraphCanvas.Arrange(new Rect(new Size((int)GraphCanvas.ActualWidth, (int)GraphCanvas.ActualHeight)));
renderBitmap.Render(GraphCanvas);
using (PdfDocument document = new PdfDocument())
{
PdfPage page = document.Pages.Add();
PdfGraphics graphics = page.Graphics;
using (var ms = new MemoryStream())
{
PngBitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(renderBitmap));
encoder.Save(ms);
PdfBitmap image = new PdfBitmap(ms);
graphics.DrawImage(image, 0, 0);
document.Save(fileName);
}
}
}
public Image DrawImage(string fileName)
{
var ltrans = GraphCanvas.LayoutTransform;
var rtrans = GraphCanvas.RenderTransform;
GraphCanvas.LayoutTransform = null;
GraphCanvas.RenderTransform = null;
var renderSize = GraphCanvas.RenderSize;
double scale = FitFactor;
int w = (int)(GeometryGraph.Width * scale);
int h = (int)(GeometryGraph.Height * scale);
SetTransformOnViewportWithoutRaisingViewChangeEvent(scale, GeometryGraph.BoundingBox.Center, new Rectangle(0, 0, w, h));
Size size = new Size(w, h);
// Measure and arrange the surface
// VERY IMPORTANT
GraphCanvas.Measure(size);
GraphCanvas.Arrange(new Rect(size));
foreach (var node in drawingGraph.Nodes.Concat(drawingGraph.RootSubgraph.AllSubgraphsDepthFirstExcludingSelf()))
{
IViewerObject o;
if (drawingObjectsToIViewerObjects.TryGetValue(node, out o))
{
((KosmographViewerNode)o).Invalidate();
}
}
RenderTargetBitmap renderBitmap = new RenderTargetBitmap(w, h, DpiX, DpiY, PixelFormats.Pbgra32);
renderBitmap.Render(GraphCanvas);
if (fileName != null)
{
// Create a file stream for saving image
using (System.IO.FileStream outStream = new System.IO.FileStream(fileName, System.IO.FileMode.Create))
{
// Use png encoder for our data
PngBitmapEncoder encoder = new PngBitmapEncoder();
// push the rendered bitmap to it
encoder.Frames.Add(BitmapFrame.Create(renderBitmap));
// save the data to the stream
encoder.Save(outStream);
}
}
GraphCanvas.LayoutTransform = ltrans;
GraphCanvas.RenderTransform = rtrans;
GraphCanvas.Measure(renderSize);
GraphCanvas.Arrange(new Rect(renderSize));
return(new Image {
Source = renderBitmap
});
}