private ProductionGraphViewer CreateViewer(
ProductionGraphViewModel graph, double scale, Thickness margin)
{
var viewer = new ProductionGraphViewer();
RenderOptions.SetBitmapScalingMode(viewer, BitmapScalingMode.Fant);
TextOptions.SetTextFormattingMode(viewer, TextFormattingMode.Display);
viewer.SnapsToDevicePixels = true;
viewer.UseLayoutRounding = true;
viewer.DataContext = graph;
if (!TransparencyCheckBox.IsChecked == true)
{
viewer.Background = Brushes.White;
}
viewer.UpdateLayout();
viewer.Dispatcher.Flush(DispatcherPriority.Render);
Rect bounds = Rect.Empty;
foreach (var node in graph.Elements.OfType <NodeElement>())
{
bounds.Union(new Rect(node.Position - (Vector)node.RenderSize / 2, node.RenderSize));
}
bounds.X *= scale;
bounds.Y *= scale;
bounds.X -= margin.Left;
bounds.Y -= margin.Top;
bounds.Width *= scale;
bounds.Height *= scale;
bounds.Width += margin.Left + margin.Right;
bounds.Height += margin.Top + margin.Bottom;
graph.Offset = new Vector(bounds.X, bounds.Y);
viewer.Width = bounds.Width;
viewer.Height = bounds.Height;
viewer.UpdateLayout();
return(viewer);
}
private BitmapSource RenderGraph(ProductionGraphViewModel graph, double scale)
{
double oldScale = graph.Scale;
Vector oldOffset = graph.Offset;
graph.Scale = scale;
graph.Offset = new Vector();
BitmapSource bitmap;
try {
var graphViewer = CreateViewer(graph, scale, new Thickness(10));
bitmap = RenderElement(graphViewer);
graphViewer.DataContext = null;
} finally {
graph.Scale = oldScale;
graph.Offset = oldOffset;
}
return(bitmap);
}
public ImageExportDialog(ProductionGraphViewModel sourceModel)
{
InitializeComponent();
this.sourceModel = sourceModel;
}
