GetImages
(
NodeXLControl oNodeXLControl,
Boolean bUseFixedAspectRatio,
out Byte [] abtFullSizeImage,
out Byte [] abtThumbnail
)
{
Debug.Assert(oNodeXLControl != null);
Debug.Assert(oNodeXLControl.ActualWidth >= MinimumNodeXLControlWidth);
Debug.Assert(oNodeXLControl.ActualHeight >= MinimumNodeXLControlHeight);
Size oFullSizeImageSizePx = GetFullSizeImageSizePx(oNodeXLControl,
bUseFixedAspectRatio);
Image oFullSizeImage = oNodeXLControl.CopyGraphToBitmap(
oFullSizeImageSizePx.Width, oFullSizeImageSizePx.Height);
Size oThumbnailImageSizePx = GetThumbnailImageSizePx(
oFullSizeImageSizePx);
Image oThumbnail = oFullSizeImage.GetThumbnailImage(
oThumbnailImageSizePx.Width, oThumbnailImageSizePx.Height,
() => { return(false); }, IntPtr.Zero);
abtFullSizeImage = ImageToBytes(oFullSizeImage);
abtThumbnail = ImageToBytes(oThumbnail);
oFullSizeImage.Dispose();
oThumbnail.Dispose();
}
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();
}
}