CreateSubgraphImage
(
IGraph oSubgraph,
CreateSubgraphImagesAsyncArgs oCreateSubgraphImagesAsyncArgs,
Size oImageSizePx
)
{
Debug.Assert(oSubgraph != null);
Debug.Assert(oCreateSubgraphImagesAsyncArgs != null);
AssertValid();
Rectangle oSubgraphRectangle = new Rectangle(new Point(0, 0),
oImageSizePx);
// Lay out the graph, then draw it using the NodeXLVisual object.
IAsyncLayout oLayout = oCreateSubgraphImagesAsyncArgs.Layout;
oLayout.LayOutGraph(oSubgraph,
new LayoutContext(oSubgraphRectangle));
NodeXLVisual oNodeXLVisual =
oCreateSubgraphImagesAsyncArgs.NodeXLVisual;
GraphDrawingContext oGraphDrawingContext =
CreateGraphDrawingContext(oSubgraphRectangle,
oLayout.Margin,
oCreateSubgraphImagesAsyncArgs.GeneralUserSettings);
oNodeXLVisual.GraphDrawer.DrawGraph(oSubgraph, oGraphDrawingContext);
// Save the graph to a bitmap.
Bitmap oBitmap = WpfGraphicsUtil.VisualToBitmap(oNodeXLVisual,
oSubgraphRectangle.Width, oSubgraphRectangle.Height);
return(oBitmap);
}
SaveObject
(
Object oObject,
String sFileName
)
{
Debug.Assert(oObject is GraphImageInfo);
Debug.Assert(!String.IsNullOrEmpty(sFileName));
GraphImageInfo oGraphImageInfo = (GraphImageInfo)oObject;
Int32 iWidth = oGraphImageInfo.Width;
Int32 iHeight = oGraphImageInfo.Height;
GraphImageCompositor oGraphImageCompositor =
new GraphImageCompositor(oGraphImageInfo.NodeXLControl);
UIElement oCompositeElement = null;
try
{
if (m_oSaveFileDialog.FilterIndex <=
SaveableImageFormats.ImageFormats.Length)
{
// The graph must be saved as a bitmap.
oCompositeElement = oGraphImageCompositor.Composite(
iWidth, iHeight, oGraphImageInfo.HeaderText,
oGraphImageInfo.FooterText,
oGraphImageInfo.HeaderFooterFont,
oGraphImageInfo.LegendControls);
System.Drawing.Bitmap oBitmap = WpfGraphicsUtil.VisualToBitmap(
oCompositeElement, iWidth, iHeight);
base.SaveObject(oBitmap, sFileName);
oBitmap.Dispose();
}
else
{
// The graph must be saved as an XPS.
Double documentWidth = ToWpsUnits(iWidth);
Double documentHeight = ToWpsUnits(iHeight);
oCompositeElement = oGraphImageCompositor.Composite(
documentWidth, documentHeight, oGraphImageInfo.HeaderText,
oGraphImageInfo.FooterText,
oGraphImageInfo.HeaderFooterFont,
oGraphImageInfo.LegendControls);
Size oDocumentSize = new Size(documentWidth, documentHeight);
Rect oDocumentRectangle = new Rect(new Point(), oDocumentSize);
FixedDocument oFixedDocument = new FixedDocument();
oFixedDocument.DocumentPaginator.PageSize = oDocumentSize;
PageContent oPageContent = new PageContent();
FixedPage oFixedPage = new FixedPage();
oFixedPage.Width = documentWidth;
oFixedPage.Height = documentHeight;
oFixedPage.Children.Add(oCompositeElement);
((System.Windows.Markup.IAddChild)oPageContent).AddChild(
oFixedPage);
oFixedDocument.Pages.Add(oPageContent);
XpsDocument oXpsDocument = new XpsDocument(sFileName,
FileAccess.Write);
XpsDocumentWriter oXpsDocumentWriter =
XpsDocument.CreateXpsDocumentWriter(oXpsDocument);
oXpsDocumentWriter.Write(oFixedDocument);
oXpsDocument.Close();
}
}
finally
{
if (oCompositeElement != null)
{
oGraphImageCompositor.RestoreNodeXLControl();
}
}
}
SaveGraphImageFile
(
NodeXLControl oNodeXLControl,
IEnumerable <LegendControlBase> oLegendControls,
String sWorkbookFilePath
)
{
Debug.Assert(oNodeXLControl != null);
Debug.Assert(oLegendControls != null);
Debug.Assert(!String.IsNullOrEmpty(sWorkbookFilePath));
AutomatedGraphImageUserSettings oAutomatedGraphImageUserSettings =
new AutomatedGraphImageUserSettings();
System.Drawing.Size oImageSizePx =
oAutomatedGraphImageUserSettings.ImageSizePx;
Int32 iWidth = oImageSizePx.Width;
Int32 iHeight = oImageSizePx.Height;
Boolean bIncludeHeader = oAutomatedGraphImageUserSettings.IncludeHeader;
Boolean bIncludeFooter = oAutomatedGraphImageUserSettings.IncludeFooter;
Debug.Assert(!bIncludeHeader ||
oAutomatedGraphImageUserSettings.HeaderText != null);
Debug.Assert(!bIncludeFooter ||
oAutomatedGraphImageUserSettings.FooterText != null);
GraphImageCompositor oGraphImageCompositor =
new GraphImageCompositor(oNodeXLControl);
UIElement oCompositeElement = oGraphImageCompositor.Composite(
iWidth, iHeight,
bIncludeHeader ? oAutomatedGraphImageUserSettings.HeaderText : null,
bIncludeFooter ? oAutomatedGraphImageUserSettings.FooterText : null,
oAutomatedGraphImageUserSettings.HeaderFooterFont, oLegendControls
);
System.Drawing.Bitmap oBitmap = WpfGraphicsUtil.VisualToBitmap(
oCompositeElement, iWidth, iHeight);
ImageFormat eImageFormat =
oAutomatedGraphImageUserSettings.ImageFormat;
String sImageFilePath = Path.ChangeExtension(sWorkbookFilePath,
SaveableImageFormats.GetFileExtension(eImageFormat));
try
{
oBitmap.Save(sImageFilePath, eImageFormat);
}
catch (System.Runtime.InteropServices.ExternalException)
{
// When an image file already exists and is read-only, an
// ExternalException is thrown.
//
// Note that this method is called from the
// ThisWorkbook.GraphLaidOut event handler, so this exception can't
// be handled by a TaskAutomator.AutomateOneWorkbook() exception
// handler.
FormUtil.ShowWarning(String.Format(
"The image file \"{0}\" couldn't be saved. Does a read-only"
+ " file with the same name already exist?"
,
sImageFilePath
));
}
finally
{
oBitmap.Dispose();
oGraphImageCompositor.RestoreNodeXLControl();
}
}
