SaveSubgraphImage
(
Bitmap oBitmap,
String sFolder,
String sFileNameNoExtension,
CreateSubgraphImagesAsyncArgs oCreateSubgraphImagesAsyncArgs
)
{
Debug.Assert(oBitmap != null);
Debug.Assert(!String.IsNullOrEmpty(sFolder));
Debug.Assert(!String.IsNullOrEmpty(sFileNameNoExtension));
Debug.Assert(oCreateSubgraphImagesAsyncArgs != null);
AssertValid();
ImageFormat eImageFormat = oCreateSubgraphImagesAsyncArgs.ImageFormat;
String sFileNameWithoutPath =
FileUtil.EncodeIllegalFileNameChars(sFileNameNoExtension)
+ "." + SaveableImageFormats.GetFileExtension(eImageFormat);
String sFileNameWithPath = Path.Combine(sFolder, sFileNameWithoutPath);
SaveBitmap(oBitmap, sFileNameWithPath, eImageFormat);
return(sFileNameWithoutPath);
}
SaveGraphImageFile
(
NodeXLControl oNodeXLControl,
String sWorkbookFilePath
)
{
Debug.Assert(oNodeXLControl != null);
Debug.Assert(!String.IsNullOrEmpty(sWorkbookFilePath));
AutomatedGraphImageUserSettings oAutomatedGraphImageUserSettings =
new AutomatedGraphImageUserSettings();
Size oImageSizePx = oAutomatedGraphImageUserSettings.ImageSizePx;
Bitmap oBitmapCopy = oNodeXLControl.CopyGraphToBitmap(
oImageSizePx.Width, oImageSizePx.Height);
ImageFormat eImageFormat =
oAutomatedGraphImageUserSettings.ImageFormat;
String sImageFilePath = Path.ChangeExtension(sWorkbookFilePath,
SaveableImageFormats.GetFileExtension(eImageFormat));
try
{
oBitmapCopy.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.AutomateThisWorkbook() 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
{
oBitmapCopy.Dispose();
}
}
SaveSubgraphImage
(
Bitmap oBitmap,
String sFolder,
String sVertexName,
CreateSubgraphImagesAsyncArgs oCreateSubgraphImagesAsyncArgs
)
{
Debug.Assert(oBitmap != null);
Debug.Assert(!String.IsNullOrEmpty(sFolder));
Debug.Assert(!String.IsNullOrEmpty(sVertexName));
Debug.Assert(oCreateSubgraphImagesAsyncArgs != null);
AssertValid();
ImageFormat eImageFormat = oCreateSubgraphImagesAsyncArgs.ImageFormat;
// The "Img-" prefix is to prevent a vertex name like "con" or "lpt"
// from causing the following exception when
// System.Drawing.Image.Save() is called:
//
// [ExternalException]: A generic error occurred in GDI+.
//
// The exception occurs because "con" (console), "lpt" (line printer)
// and some other names are reserved file names in Windows.
String sFileNameNoPath = String.Format(
"Img-{0}.{1}"
,
FileUtil.EncodeIllegalFileNameChars(sVertexName),
SaveableImageFormats.GetFileExtension(eImageFormat)
);
String sFileNameWithPath = Path.Combine(sFolder, sFileNameNoPath);
SaveBitmap(oBitmap, sFileNameWithPath, eImageFormat);
return(sFileNameNoPath);
}
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();
}
}