private IntPtr RenderWindowsMetafilePict(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.RenderWindowsMetafilePict");
if (!(tymed == TYMED.TYMED_MFPICT))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_MFPICT");
}
if (null != _graphDocumentBitmapImage)
{
using (var rgbBitmap = GraphDocumentExportActions.ConvertBitmapToPixelFormat(_graphDocumentBitmapImage, System.Drawing.Imaging.PixelFormat.Format24bppRgb, _graphExportOptions.BackgroundColorForFormatsWithoutAlphaChannel))
{
var scaledDocSize = _graphDocumentSize * _graphExportOptions.OutputScalingFactor;
using (var enhancedMetafile = GraphDocumentExportActions.RenderAsEnhancedMetafileBitmapFormat(rgbBitmap, scaledDocSize))
{
var hEmf = enhancedMetafile.GetHenhmetafile();
return(DataObjectHelper.ConvertEnhancedMetafileToWindowsMetafilePict(hEmf, scaledDocSize.X, scaledDocSize.Y));
}
}
}
else
{
throw new InvalidProgramException("Please report this exception to the author of the program and describe the steps to reproduce the exception");
}
}
/// <summary>
/// Determines whether the data object is capable of rendering the data described
/// in the passed clipboard format and storage type(s). Objects attempting a
/// paste or drop operation can call this method before calling GetData
/// to get an indication of whether the operation may be successful
/// </summary>
/// <param name="clipFormat">Name of clipboard format requested</param>
/// <param name="types">type(s) requested</param>
/// <returns>true if the subseqent call to GetData would likely be
/// successful, otherwise false</returns>
public bool QueryGetData(string clipFormat, TYMED types)
{
// populate contents of FORMATETC structure
FORMATETC formatEtc = new FORMATETC();
OleDataObjectHelper.PopulateFORMATETC(clipFormat, types, ref formatEtc);
// try to successfully query for the data
int result = m_dataObject.QueryGetData(ref formatEtc);
// data is available
if (result == HRESULT.S_OK)
{
return(true);
}
// data is not available
else if (result == DV_E.FORMATETC)
{
return(false);
}
// unexpected error
else
{
Marshal.ThrowExceptionForHR(result);
return(false); // keep compiler happy
}
}
private void SetData(byte[] data, string formatName, TYMED tymed)
{
IntPtr ptrToHandle = Marshal.AllocHGlobal(data.Length);
try
{
Marshal.Copy(data, 0, ptrToHandle, data.Length);
FORMATETC format = new FORMATETC
{
cfFormat = (short)DataFormats.GetFormat(formatName).Id,
dwAspect = DVASPECT.DVASPECT_CONTENT,
lindex = -1,
ptd = (IntPtr)0,
tymed = tymed
};
STGMEDIUM medium = new STGMEDIUM
{
unionmember = ptrToHandle,
tymed = TYMED.TYMED_HGLOBAL,
pUnkForRelease = 0
};
dataObject.SetData(ref format, ref medium, false);
}
finally
{
Marshal.FreeHGlobal(ptrToHandle);
}
}
private byte[] GetData(string formatName, TYMED tymed)
{
FORMATETC format = new FORMATETC
{
cfFormat = (short)DataFormats.GetFormat(formatName).Id,
dwAspect = DVASPECT.DVASPECT_CONTENT,
lindex = -1,
ptd = (IntPtr)0,
tymed = tymed
};
STGMEDIUM medium = new STGMEDIUM
{
tymed = TYMED.TYMED_NULL,
pUnkForRelease = 0
};
dataObject.GetData(ref format, out medium);
HandleRef handleRef = new HandleRef(null, medium.unionmember);
try
{
IntPtr ptrToHandle = GlobalLock(handleRef);
int length = GlobalSize(handleRef);
byte[] data = new byte[length];
Marshal.Copy(ptrToHandle, data, 0, length);
return(data);
}
finally
{
GlobalUnlock(handleRef);
}
}
/// <summary>
/// Fills a FORMATETC structure.
/// </summary>
/// <param name="format">The format name.</param>
/// <param name="tymed">The accepted TYMED.</param>
/// <param name="formatETC">The structure to fill.</param>
private static void FillFormatETC(string format, TYMED tymed, out FORMATETC formatETC)
{
formatETC.cfFormat = (short)RegisterClipboardFormat(format);
formatETC.dwAspect = DVASPECT.DVASPECT_CONTENT;
formatETC.lindex = -1;
formatETC.ptd = IntPtr.Zero;
formatETC.tymed = tymed;
}
public static IntPtr RenderLinkedObjectDescriptor(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.RenderLinkedObjectDescriptor");
// Brockschmidt, Inside Ole 2nd ed. page 991
if (!(tymed == TYMED.TYMED_HGLOBAL))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
}
// Fill in the basic information.
var od = new OBJECTDESCRIPTOR
{
// According to the documentation this is used just to find an icon.
clsid = typeof(GraphDocumentLinkedComObject).GUID,
dwDrawAspect = DVASPECT.DVASPECT_CONTENT,
sizelcx = 0, // zero in imitation of Word/Excel, but could be box.Extent.cx;
sizelcy = 0, // zero in imitation of Word/Excel, but could be box.Extent.cy;
pointlx = 0,
pointly = 0
};
od.dwStatus = MiscStatus((int)od.dwDrawAspect);
// Descriptive strings to tack on after the struct.
string name = GraphDocumentLinkedComObject.USER_TYPE;
int name_size = (name.Length + 1) * sizeof(char);
string source = "Altaxo";
int source_size = (source.Length + 1) * sizeof(char);
int od_size = Marshal.SizeOf(typeof(OBJECTDESCRIPTOR));
od.dwFullUserTypeName = od_size;
od.dwSrcOfCopy = od_size + name_size;
int full_size = od_size + name_size + source_size;
od.cbSize = full_size;
// To avoid 'unsafe', we will arrange the strings in a byte array.
byte[] strings = new byte[full_size];
Encoding unicode = Encoding.Unicode;
Array.Copy(unicode.GetBytes(name), 0, strings, od.dwFullUserTypeName, name.Length * sizeof(char));
Array.Copy(unicode.GetBytes(source), 0, strings, od.dwSrcOfCopy, source.Length * sizeof(char));
// Combine the strings and the struct into a single block of mem.
IntPtr hod = Kernel32Func.GlobalAlloc(GlobalAllocFlags.GHND, full_size);
if (!(hod != IntPtr.Zero))
{
throw new InvalidOperationException("GlobalAlloc operation was not successful");
}
IntPtr buf = Kernel32Func.GlobalLock(hod);
Marshal.Copy(strings, 0, buf, full_size);
Marshal.StructureToPtr(od, buf, false);
Kernel32Func.GlobalUnlock(hod);
return(hod);
}
static FORMATETC CreateFormatEtc(string format, TYMED tymed) =>
new FORMATETC
{
cfFormat = (short)DataFormats.GetDataFormat(format).Id,
tymed = tymed,
dwAspect = DVASPECT.DVASPECT_CONTENT,
lindex = -1,
ptd = IntPtr.Zero
};
/// <summary>
/// Helper function to populate the contents of a FORMATETC structure
/// using the passed clipboard format and type(s).
/// </summary>
/// <param name="lindex">Index of item to retreive</param>
/// <param name="clipFormat">Name of clipboard format requested</param>
/// <param name="types">type(s) requested</param>
/// <param name="formatEtc">FORMATETC structure to be populated</param>
public static void PopulateFORMATETC(
int lindex, string clipFormat, TYMED types, ref FORMATETC formatEtc)
{
// populate contents of FORMATETC structure
formatEtc.cfFormat = (ushort)User32.RegisterClipboardFormat(clipFormat);
formatEtc.ptd = IntPtr.Zero;
formatEtc.dwAspect = DVASPECT.CONTENT;
formatEtc.lindex = lindex;
formatEtc.tymed = types;
}
private IntPtr RenderAsDIBBitmap(TYMED tymed)
{
ComDebug.ReportInfo("{0}.RenderAsDIBBitmap", GetType().Name);
if (!(tymed == TYMED.TYMED_HGLOBAL))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
}
return(EmbeddedGraphDocumentRenderingHelper.RenderAsDIBBitmap_TYMED_HGLOBAL(tymed, _document));
}
/// <summary>
/// Helper function to populate the contents of a FORMATETC structure
/// using the passed clipboard format and type(s).
/// </summary>
/// <param name="lindex">Index of item to retreive</param>
/// <param name="clipFormat">Name of clipboard format requested</param>
/// <param name="types">type(s) requested</param>
/// <param name="formatEtc">FORMATETC structure to be populated</param>
public static void PopulateFORMATETC(
int lindex, string clipFormat, TYMED types, ref FORMATETC formatEtc)
{
// populate contents of FORMATETC structure
formatEtc.cfFormat = (ushort)User32.RegisterClipboardFormat(clipFormat);
formatEtc.ptd = IntPtr.Zero;
formatEtc.dwAspect = DVASPECT.CONTENT;
formatEtc.lindex = lindex;
formatEtc.tymed = types;
}
private bool GetTymedUseable(TYMED tymed)
{
for (int i = 0; i < ALLOWED_TYMEDS.Length; i++)
{
if ((tymed & ALLOWED_TYMEDS[i]) != 0)
{
return(true);
}
}
return(false);
}
private IntPtr RenderEnhancedMetafile(TYMED tymed)
{
ComDebug.ReportInfo("{0}.RenderEnhancedMetafile", GetType().Name);
if (!(tymed == TYMED.TYMED_ENHMF))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_TYMED_ENHMF");
}
return(EmbeddedGraphDocumentRenderingHelper.RenderEnhancedMetafile_TYMED_ENHMF(tymed, _document));
}
private IntPtr RenderWindowsMetafilePict(TYMED tymed)
{
ComDebug.ReportInfo("{0}.RenderWindowsMetafilePict", GetType().Name);
if (!(tymed == TYMED.TYMED_MFPICT))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_MFPICT");
}
return(EmbeddedGraphDocumentRenderingHelper.RenderWindowsMetafilePict_TYMED_MFPICT(tymed, _document));
}
private IntPtr RenderMoniker(TYMED tymed)
{
ComDebug.ReportInfo("{0}.RenderMoniker", GetType().Name);
if (!(tymed == TYMED.TYMED_ISTREAM))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_ISTREAM");
}
return(DataObjectHelper.RenderMonikerToNewStream(tymed, CreateNewDocumentMoniker()));
}
private static Boolean GetTymedUseable(TYMED tymed)
{
for (Int32 i = 0; i < ALLOWED_TYMEDS.Length; i++)
{
if ((tymed & ALLOWED_TYMEDS[i]) != TYMED.TYMED_NULL)
{
return(true);
}
}
return(false);
}
public Rendering(short format, TYMED tymed, RenderDataProcedure renderer)
{
this.format = new FORMATETC()
{
cfFormat = format,
ptd = IntPtr.Zero,
dwAspect = DVASPECT.DVASPECT_CONTENT,
lindex = -1, // all
tymed = tymed
};
this.renderer = renderer;
}
private bool GetTymedUsable(TYMED tymed)
{
//Loop through allowed tymeds
for (int i = 0; i < ALLOWED_TYMEDS.Length; i++)
{
if (tymed.HasFlag(ALLOWED_TYMEDS[i]))
{
return(true); //If tymed is allowed just return true
}
}
//Return
return(false);
}
/// <summary>
/// Sets managed data to a clipboard DataObject.
/// </summary>
/// <param name="dataObject">The DataObject to set the data on.</param>
/// <param name="format">The clipboard format.</param>
/// <param name="data">The data object.</param>
/// <remarks>
/// Because the underlying data store is not storing managed objects, but
/// unmanaged ones, this function provides intelligent conversion, allowing
/// you to set unmanaged data into the COM implemented IDataObject.</remarks>
public static void SetDataEx(this IDataObject dataObject, string format, object data)
{
DataFormat dataFormat = DataFormats.GetDataFormat(format);
// Initialize the format structure
var formatETC = new FORMATETC();
formatETC.cfFormat = (short)dataFormat.Id;
formatETC.dwAspect = DVASPECT.DVASPECT_CONTENT;
formatETC.lindex = -1;
formatETC.ptd = IntPtr.Zero;
// Try to discover the TYMED from the format and data
TYMED tymed = GetCompatibleTymed(format, data);
// If a TYMED was found, we can use the system DataObject
// to convert our value for us.
if (tymed != TYMED.TYMED_NULL)
{
formatETC.tymed = tymed;
// Set data on an empty DataObject instance
var conv = new System.Windows.DataObject();
conv.SetData(format, data, true);
// Now retrieve the data, using the COM interface.
// This will perform a managed to unmanaged conversion for us.
STGMEDIUM medium;
((ComIDataObject)conv).GetData(ref formatETC, out medium);
try
{
// Now set the data on our data object
((ComIDataObject)dataObject).SetData(ref formatETC, ref medium, true);
}
catch
{
// On exceptions, release the medium
ReleaseStgMedium(ref medium);
throw;
}
}
else
{
// Since we couldn't determine a TYMED, this data
// is likely custom managed data, and won't be used
// by unmanaged code, so we'll use our custom marshaling
// implemented by our COM IDataObject extensions.
ComDataObjectExtensions.SetManagedData((ComIDataObject)dataObject, format, data);
}
}
/// <summary>
/// Renders the provided graph document to an device independent bitmap (TYMED_HGLOBAL). Please not that this format does not support transparancy, thus the back color provided in the rendering options is used as ground brush first.
/// </summary>
/// <param name="tymed">The tymed to check.</param>
/// <param name="document">The graph document.</param>
/// <returns>Pointer to the device independent bitmap (TYMED_HGLOBAL).</returns>
public static IntPtr RenderAsDIBBitmap_TYMED_HGLOBAL(TYMED tymed, GraphDocumentBase document)
{
if (!(tymed == TYMED.TYMED_HGLOBAL))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
}
var renderingOptions = GetRenderingOptions(document);
using (var bmp = Altaxo.Graph.GraphDocumentBaseExportActions.RenderAsBitmap(document, renderingOptions, System.Drawing.Imaging.PixelFormat.Format24bppRgb))
{
return(DataObjectHelper.RenderDIBBitmapToHGLOBAL(bmp));
}
}
/// <summary>
/// Creates a new stream and renders the moniker into this stream. This function is intended for use with GetData(), but (!) not with GetDataHere().
/// </summary>
/// <param name="tymed">The tymed.</param>
/// <param name="moniker">The moniker to render into the stream.</param>
/// <returns>Newly created stream with the moniker rendered into.</returns>
public static IntPtr RenderMonikerToNewStream(TYMED tymed, IMoniker moniker)
{
if (!(tymed == TYMED.TYMED_ISTREAM))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_ISTREAM");
}
int hr = Ole32Func.CreateStreamOnHGlobal(IntPtr.Zero, true, out var strm);
if (!(hr == ComReturnValue.S_OK))
{
throw new InvalidOperationException("The COM operation was not successful");
}
SaveMonikerToStream(moniker, strm);
return(Marshal.GetIUnknownForObject(strm)); // Increments the reference count
}
/// <summary>
/// Creates a new IStream as global data and renders data into it.
/// </summary>
/// <param name="tymed">The tymed. Used only to make sure we have the right tymed.</param>
/// <param name="RenderToStreamProcedure">The render to stream procedure.</param>
/// <returns>Global pointer to that stream.</returns>
public static IntPtr RenderToNewStream(TYMED tymed, Action <IStream> RenderToStreamProcedure)
{
if (!(tymed == TYMED.TYMED_ISTREAM))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_ISTREAM");
}
int hr = Ole32Func.CreateStreamOnHGlobal(IntPtr.Zero, true, out var strm);
if (!(hr == ComReturnValue.S_OK))
{
throw new InvalidOperationException();
}
RenderToStreamProcedure(strm);
return(Marshal.GetIUnknownForObject(strm)); // Increments the reference count
}
private IntPtr RenderBitmapAsDropFile(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.BitmapAsDropFile");
if (!(tymed == TYMED.TYMED_HGLOBAL))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
}
EnsureDropFileCreated();
if (!string.IsNullOrEmpty(_graphDocumentDropdownFileName))
{
return(DataObjectHelper.RenderFiles(new string[] { _graphDocumentDropdownFileName }));
}
return(IntPtr.Zero);
}
private IntPtr RenderBitmapDIBV5(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.RenderBitmapDIBV5");
if (!(tymed == TYMED.TYMED_HGLOBAL))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
}
if (null != _graphDocumentBitmapImage)
{
return(DataObjectHelper.RenderDIBV5BitmapToHGLOBAL(_graphDocumentBitmapImage));
}
else
{
throw new InvalidProgramException("Please report this exception to the author of the program and describe the steps to reproduce the exception");
}
}
public static IntPtr RenderToNewStream(TYMED tymed, Action <System.IO.Stream> RenderToStreamProcedure)
{
if (!(tymed == TYMED.TYMED_ISTREAM))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_ISTREAM");
}
int hr = Ole32Func.CreateStreamOnHGlobal(IntPtr.Zero, true, out var strm);
if (!(hr == ComReturnValue.S_OK))
{
throw new InvalidOperationException("The COM operation was not successful");
}
using (var strmWrapper = new ComStreamWrapper(strm, true))
{
RenderToStreamProcedure(strmWrapper);
}
return(Marshal.GetIUnknownForObject(strm)); // Increments the reference count
}
public static void SetDataEx(this IDataObject dataObject, string format, object data)
{
System.Windows.Forms.DataFormats.Format dataFormat = System.Windows.Forms.DataFormats.GetFormat(format);
// Initialize the format structure
FORMATETC formatETC = new FORMATETC();
formatETC.cfFormat = (short)dataFormat.Id;
formatETC.dwAspect = DVASPECT.DVASPECT_CONTENT;
formatETC.lindex = -1;
formatETC.ptd = IntPtr.Zero;
// Try to discover the TYMED from the format and data
TYMED tymed = GetCompatibleTymed(format, data);
// If a TYMED was found, we can use the system DataObject
// to convert our value for us.
if (tymed != TYMED.TYMED_NULL)
{
formatETC.tymed = tymed;
// Use a temporary standard data object to convert from managed to native.
System.Windows.Forms.DataObject conv = new System.Windows.Forms.DataObject();
conv.SetData(format, true, data);
STGMEDIUM medium;
((IDataObject)conv).GetData(ref formatETC, out medium);
try
{
((IDataObject)dataObject).SetData(ref formatETC, ref medium, true);
}
catch
{
Win32.ReleaseStgMedium(ref medium);
throw;
}
}
else
{
SetManagedData((IDataObject)dataObject, format, data);
}
}
/// <summary>
/// Renders the provided graph document to an windows metafile picture (TYMED_MFPICT). Please not that this format does not support transparancy, thus the back color provided in the rendering options is used as ground brush first.
/// </summary>
/// <param name="tymed">The tymed to check.</param>
/// <param name="document">The graph document.</param>
/// <returns>Pointer to windows metafile picture (TYMED_MFPICT).</returns>
public static IntPtr RenderWindowsMetafilePict_TYMED_MFPICT(TYMED tymed, GraphDocumentBase document)
{
if (!(tymed == TYMED.TYMED_MFPICT))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_MFPICT");
}
var renderingOptions = GetRenderingOptions(document);
using (var rgbBitmap = Altaxo.Graph.GraphDocumentBaseExportActions.RenderAsBitmap(document, renderingOptions, System.Drawing.Imaging.PixelFormat.Format24bppRgb))
{
var scaledDocSize = document.Size * renderingOptions.OutputScalingFactor;
using (var enhancedMetafile = GraphDocumentExportActions.RenderAsEnhancedMetafileBitmapFormat(rgbBitmap, scaledDocSize))
{
var hEmf = enhancedMetafile.GetHenhmetafile();
return(DataObjectHelper.ConvertEnhancedMetafileToWindowsMetafilePict(hEmf, scaledDocSize.X, scaledDocSize.Y));
}
}
}
/// <summary>
/// Renders the provided graph document to an enhanced metafile (TYMED_ENHMF).
/// </summary>
/// <param name="tymed">The tymed to check.</param>
/// <param name="document">The graph document.</param>
/// <returns>Pointer to the enhanced metafile (TYMED_ENHMF).</returns>
public static IntPtr RenderEnhancedMetafile_TYMED_ENHMF(TYMED tymed, GraphDocumentBase document)
{
if (!(tymed == TYMED.TYMED_ENHMF))
throw new ArgumentException(nameof(tymed) + " is not TYMED_TYMED_ENHMF");
var renderingOptions = GetRenderingOptions(document);
if (renderingOptions.RenderEnhancedMetafileAsVectorFormat)
{
var metafile = Altaxo.Graph.GraphDocumentBaseExportActions.RenderAsEnhancedMetafileVectorFormat(document, renderingOptions);
return metafile.GetHenhmetafile();
}
else
{
using (var bmp = Altaxo.Graph.GraphDocumentBaseExportActions.RenderAsBitmap(document, renderingOptions, System.Drawing.Imaging.PixelFormat.Format32bppArgb))
{
var scaledDocSize = document.Size * renderingOptions.OutputScalingFactor;
return GraphDocumentExportActions.RenderAsEnhancedMetafileBitmapFormat(bmp, scaledDocSize).GetHenhmetafile();
}
}
}
private IntPtr RenderBitmapDIB(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.RenderBitmapDIB");
if (!(tymed == TYMED.TYMED_HGLOBAL))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
}
if (null != _graphDocumentBitmapImage)
{
using (var convertedBitmap = GraphDocumentExportActions.ConvertBitmapToPixelFormat(_graphDocumentBitmapImage, System.Drawing.Imaging.PixelFormat.Format24bppRgb, _graphExportOptions.BackgroundColorForFormatsWithoutAlphaChannel))
{
return(DataObjectHelper.RenderDIBBitmapToHGLOBAL(convertedBitmap));
}
}
else
{
throw new InvalidProgramException("Please report this exception to the author of the program and describe the steps to reproduce the exception");
}
}
/// <summary>
/// Renders the provided graph document to an enhanced metafile (TYMED_ENHMF).
/// </summary>
/// <param name="tymed">The tymed to check.</param>
/// <param name="document">The graph document.</param>
/// <returns>Pointer to the enhanced metafile (TYMED_ENHMF).</returns>
public static IntPtr RenderEnhancedMetafile_TYMED_ENHMF(TYMED tymed, GraphDocumentBase document)
{
if (!(tymed == TYMED.TYMED_ENHMF))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_TYMED_ENHMF");
}
var renderingOptions = GetRenderingOptions(document);
if (renderingOptions.RenderEnhancedMetafileAsVectorFormat)
{
var metafile = Altaxo.Graph.GraphDocumentBaseExportActions.RenderAsEnhancedMetafileVectorFormat(document, renderingOptions);
return(metafile.GetHenhmetafile());
}
else
{
using (var bmp = Altaxo.Graph.GraphDocumentBaseExportActions.RenderAsBitmap(document, renderingOptions, System.Drawing.Imaging.PixelFormat.Format32bppArgb))
{
var scaledDocSize = document.Size * renderingOptions.OutputScalingFactor;
return(GraphDocumentExportActions.RenderAsEnhancedMetafileBitmapFormat(bmp, scaledDocSize).GetHenhmetafile());
}
}
}
private IntPtr RenderEnhancedMetaFile(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.RenderEnhancedMetafile");
if (!(tymed == TYMED.TYMED_ENHMF))
{
throw new ArgumentException(nameof(tymed) + " is not TYMED_TYMED_ENHMF");
}
if (null != _graphDocumentMetafileImage)
{
var mfCloned = (System.Drawing.Imaging.Metafile)_graphDocumentMetafileImage.Clone();
return(mfCloned.GetHenhmetafile());
}
else if (null != _graphDocumentBitmapImage)
{
var scaledDocSize = _graphDocumentSize * _graphExportOptions.OutputScalingFactor;
return(GraphDocumentExportActions.RenderAsEnhancedMetafileBitmapFormat(_graphDocumentBitmapImage, scaledDocSize).GetHenhmetafile());
}
else
{
throw new InvalidProgramException("Please report this exception to the author of the program and describe the steps to reproduce the exception");
}
}
private IntPtr RenderEmbeddedObjectDescriptor(TYMED tymed)
{
ComDebug.ReportInfo("{0}.RenderEmbeddedObjectDescriptor", this.GetType().Name);
return GraphDocumentDataObject.RenderEmbeddedObjectDescriptor(tymed, _document.Size);
}
/// <summary>
/// Determines whether the data object is capable of rendering the data described
/// in the passed clipboard format and storage type(s). Objects attempting a
/// paste or drop operation can call this method before calling GetData
/// to get an indication of whether the operation may be successful
/// </summary>
/// <param name="clipFormat">Name of clipboard format requested</param>
/// <param name="types">type(s) requested</param>
/// <returns>true if the subseqent call to GetData would likely be
/// successful, otherwise false</returns>
public bool QueryGetData(string clipFormat, TYMED types)
{
// populate contents of FORMATETC structure
FORMATETC formatEtc = new FORMATETC();
OleDataObjectHelper.PopulateFORMATETC(clipFormat, types, ref formatEtc);
// try to successfully query for the data
int result = m_dataObject.QueryGetData(ref formatEtc);
// data is available
if (result == HRESULT.S_OK)
return true;
// data is not available
else if (result == DV_E.FORMATETC)
return false;
// unexpected error
else
{
Marshal.ThrowExceptionForHR(result);
return false; // keep compiler happy
}
}
public IntPtr RenderLink(TYMED tymed)
{
return(DataObjectHelper.RenderMonikerToNewStream(tymed, Moniker));
}
private IntPtr RenderAsDIBBitmap(TYMED tymed)
{
ComDebug.ReportInfo("{0}.RenderAsDIBBitmap", this.GetType().Name);
if (!(tymed == TYMED.TYMED_HGLOBAL))
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
return EmbeddedGraphDocumentRenderingHelper.RenderAsDIBBitmap_TYMED_HGLOBAL(tymed, _document);
}
private IntPtr RenderEnhancedMetaFile(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.RenderEnhancedMetafile");
if (!(tymed == TYMED.TYMED_ENHMF))
throw new ArgumentException(nameof(tymed) + " is not TYMED_TYMED_ENHMF");
if (null != _graphDocumentMetafileImage)
{
var mfCloned = (System.Drawing.Imaging.Metafile)_graphDocumentMetafileImage.Clone();
return mfCloned.GetHenhmetafile();
}
else if (null != _graphDocumentBitmapImage)
{
var scaledDocSize = _graphDocumentSize * _graphExportOptions.OutputScalingFactor;
return GraphDocumentExportActions.RenderAsEnhancedMetafileBitmapFormat(_graphDocumentBitmapImage, scaledDocSize).GetHenhmetafile();
}
else
{
throw new InvalidProgramException("Please report this exception to the author of the program and describe the steps to reproduce the exception");
}
}
private IntPtr RenderBitmapDIB(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.RenderBitmapDIB");
if (!(tymed == TYMED.TYMED_HGLOBAL))
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
if (null != _graphDocumentBitmapImage)
{
using (var convertedBitmap = GraphDocumentExportActions.ConvertBitmapToPixelFormat(_graphDocumentBitmapImage, System.Drawing.Imaging.PixelFormat.Format24bppRgb, _graphExportOptions.BackgroundColorForFormatsWithoutAlphaChannel))
{
return DataObjectHelper.RenderDIBBitmapToHGLOBAL(convertedBitmap);
}
}
else
{
throw new InvalidProgramException("Please report this exception to the author of the program and describe the steps to reproduce the exception");
}
}
private IntPtr RenderWindowsMetafilePict(TYMED tymed)
{
ComDebug.ReportInfo("{0}.RenderWindowsMetafilePict", this.GetType().Name);
if (!(tymed == TYMED.TYMED_MFPICT))
throw new ArgumentException(nameof(tymed) + " is not TYMED_MFPICT");
return EmbeddedGraphDocumentRenderingHelper.RenderWindowsMetafilePict_TYMED_MFPICT(tymed, _document);
}
private static void FillFormatETC(string format, TYMED tymed, out FORMATETC formatETC)
{
formatETC.cfFormat = (short)Advent.Common.Interop.NativeMethods.RegisterClipboardFormat(format);
formatETC.dwAspect = DVASPECT.DVASPECT_CONTENT;
formatETC.lindex = -1;
formatETC.ptd = IntPtr.Zero;
formatETC.tymed = tymed;
}
/// <summary>
/// Retrieves the specified format data from the bound IComDataObject, from
/// other sources that IStream and HGLOBAL... this is really just a place
/// to put the "special" formats like BITMAP, ENHMF, etc.
/// </summary>
private object?GetDataFromOleOther(string format)
{
Debug.Assert(_innerData is not null, "You must have an innerData on all DataObjects");
FORMATETC formatetc = new FORMATETC();
STGMEDIUM medium = new STGMEDIUM();
TYMED tymed = (TYMED)0;
if (format.Equals(DataFormats.Bitmap))
{
tymed = TYMED.TYMED_GDI;
}
if (tymed == (TYMED)0)
{
return(null);
}
formatetc.cfFormat = unchecked ((short)(ushort)(DataFormats.GetFormat(format).Id));
formatetc.dwAspect = DVASPECT.DVASPECT_CONTENT;
formatetc.lindex = -1;
formatetc.tymed = tymed;
object?data = null;
if ((int)HRESULT.S_OK == QueryGetDataUnsafe(ref formatetc))
{
try
{
_innerData.GetData(ref formatetc, out medium);
}
catch
{
}
}
try
{
if (medium.tymed == TYMED.TYMED_GDI && medium.unionmember != IntPtr.Zero)
{
if (format.Equals(DataFormats.Bitmap))
{
// ASURT 140870 -- GDI+ doesn't own this HBITMAP, but we can't
// delete it while the object is still around. So we have to do the really expensive
// thing of cloning the image so we can release the HBITMAP.
// This bitmap is created by the com object which originally copied the bitmap to the
// clipboard. We call Add here, since DeleteObject calls Remove.
Image clipboardImage = Image.FromHbitmap(medium.unionmember);
if (clipboardImage is not null)
{
Image firstImage = clipboardImage;
clipboardImage = (Image)clipboardImage.Clone();
firstImage.Dispose();
}
data = clipboardImage;
}
}
}
finally
{
Ole32.ReleaseStgMedium(ref medium);
}
return(data);
}
private IntPtr RenderBitmapAsDropFile(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.BitmapAsDropFile");
if (!(tymed == TYMED.TYMED_HGLOBAL))
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
EnsureDropFileCreated();
if (!string.IsNullOrEmpty(_graphDocumentDropdownFileName))
{
return DataObjectHelper.RenderFiles(new string[] { _graphDocumentDropdownFileName });
}
return IntPtr.Zero;
}
private static Boolean GetTymedUseable(TYMED tymed)
{
for (Int32 i = 0; i < ALLOWED_TYMEDS.Length; i++)
{
if ((tymed & ALLOWED_TYMEDS[i]) != TYMED.TYMED_NULL)
{
return true;
}
}
return false;
}
/// <summary>
/// Renders the provided graph document to an device independent bitmap (TYMED_HGLOBAL). Please not that this format does not support transparancy, thus the back color provided in the rendering options is used as ground brush first.
/// </summary>
/// <param name="tymed">The tymed to check.</param>
/// <param name="document">The graph document.</param>
/// <returns>Pointer to the device independent bitmap (TYMED_HGLOBAL).</returns>
public static IntPtr RenderAsDIBBitmap_TYMED_HGLOBAL(TYMED tymed, GraphDocumentBase document)
{
if (!(tymed == TYMED.TYMED_HGLOBAL))
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
var renderingOptions = GetRenderingOptions(document);
using (var bmp = Altaxo.Graph.GraphDocumentBaseExportActions.RenderAsBitmap(document, renderingOptions, System.Drawing.Imaging.PixelFormat.Format24bppRgb))
{
return DataObjectHelper.RenderDIBBitmapToHGLOBAL(bmp);
}
}
/// <summary>
/// Extract the date from within an OleDataObject. Pass in the requested
/// clipboard format and type (or types ORed together) that you want
/// the data in. The method will return an OleStgMedium for the type(s)
/// requested if it is available, otherwise it will return null.
/// If a single type is requested then the return value can be safely
/// cast to the requested OleStgMedium subclasss. If multiple types
/// are requested then the return value will represent the object's
/// preferred storage representation and client code will need to use
/// the 'is' operator to determine what type was returned.
/// </summary>
/// <param name="lindex">Index of item to retreive</param>
/// <param name="clipFormat">Name of clipboard format requested</param>
/// <param name="types">type(s) requested</param>
/// <returns>OleStgMedium instance if format and requested storage type
/// are available, otherwise null</returns>
public OleStgMedium GetData(int lindex, string clipFormat, TYMED types)
{
// populate contents of FORMATETC structure
FORMATETC formatEtc = new FORMATETC();
OleDataObjectHelper.PopulateFORMATETC(lindex, clipFormat, types, ref formatEtc);
// attempt to get the data using the requested format
STGMEDIUM stgMedium = new STGMEDIUM();
if (m_dataObject != null)
{
int result = m_dataObject.GetData(ref formatEtc, ref stgMedium);
// check for errors
if (result != HRESULT.S_OK)
{
// data format not supported (expected error condition)
if (result == DV_E.FORMATETC)
return null;
// unexpected error condition
else
Marshal.ThrowExceptionForHR(result);
}
// return the correct OleStgMedium subclass depending upon the type
switch (stgMedium.tymed)
{
case TYMED.NULL:
return null;
case TYMED.HGLOBAL:
return new OleStgMediumHGLOBAL(stgMedium);
case TYMED.FILE:
return new OleStgMediumFILE(stgMedium);
case TYMED.GDI:
return new OleStgMediumGDI(stgMedium);
case TYMED.MFPICT:
return new OleStgMediumMFPICT(stgMedium);
case TYMED.ENHMF:
return new OleStgMediumENHMF(stgMedium);
case TYMED.ISTREAM:
return new OleStgMediumISTREAM(stgMedium);
case TYMED.ISTORAGE:
return new OleStgMediumISTORAGE(stgMedium);
default:
Debug.Assert(false, "Invalid TYMED value");
return null;
}
}
else
return null;
}
private IntPtr RenderMoniker(TYMED tymed)
{
ComDebug.ReportInfo("{0}.RenderMoniker", this.GetType().Name);
if (!(tymed == TYMED.TYMED_ISTREAM))
throw new ArgumentException(nameof(tymed) + " is not TYMED_ISTREAM");
return DataObjectHelper.RenderMonikerToNewStream(tymed, CreateNewDocumentMoniker());
}
public static IntPtr RenderLinkedObjectDescriptor(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.RenderLinkedObjectDescriptor");
// Brockschmidt, Inside Ole 2nd ed. page 991
if (!(tymed == TYMED.TYMED_HGLOBAL))
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
// Fill in the basic information.
OBJECTDESCRIPTOR od = new OBJECTDESCRIPTOR();
// According to the documentation this is used just to find an icon.
od.clsid = typeof(GraphDocumentLinkedComObject).GUID;
od.dwDrawAspect = DVASPECT.DVASPECT_CONTENT;
od.sizelcx = 0; // zero in imitation of Word/Excel, but could be box.Extent.cx;
od.sizelcy = 0; // zero in imitation of Word/Excel, but could be box.Extent.cy;
od.pointlx = 0;
od.pointly = 0;
od.dwStatus = MiscStatus((int)od.dwDrawAspect);
// Descriptive strings to tack on after the struct.
string name = GraphDocumentLinkedComObject.USER_TYPE;
int name_size = (name.Length + 1) * sizeof(char);
string source = "Altaxo";
int source_size = (source.Length + 1) * sizeof(char);
int od_size = Marshal.SizeOf(typeof(OBJECTDESCRIPTOR));
od.dwFullUserTypeName = od_size;
od.dwSrcOfCopy = od_size + name_size;
int full_size = od_size + name_size + source_size;
od.cbSize = full_size;
// To avoid 'unsafe', we will arrange the strings in a byte array.
byte[] strings = new byte[full_size];
Encoding unicode = Encoding.Unicode;
Array.Copy(unicode.GetBytes(name), 0, strings, od.dwFullUserTypeName, name.Length * sizeof(char));
Array.Copy(unicode.GetBytes(source), 0, strings, od.dwSrcOfCopy, source.Length * sizeof(char));
// Combine the strings and the struct into a single block of mem.
IntPtr hod = Kernel32Func.GlobalAlloc(GlobalAllocFlags.GHND, full_size);
if (!(hod != IntPtr.Zero))
throw new InvalidOperationException("GlobalAlloc operation was not successful");
IntPtr buf = Kernel32Func.GlobalLock(hod);
Marshal.Copy(strings, 0, buf, full_size);
Marshal.StructureToPtr(od, buf, false);
Kernel32Func.GlobalUnlock(hod);
return hod;
}
public IntPtr RenderEmbeddedObjectDescriptor(TYMED tymed)
{
return RenderEmbeddedObjectDescriptor(tymed, _graphDocumentSize);
}
/// <summary>
/// Helper function to populate the contents of a FORMATETC structure
/// using the passed clipboard format and type(s).
/// </summary>
/// <param name="clipFormat">Name of clipboard format requested</param>
/// <param name="types">type(s) requested</param>
/// <param name="formatEtc">FORMATETC structure to be populated</param>
public static void PopulateFORMATETC(
string clipFormat, TYMED types, ref FORMATETC formatEtc)
{
OleDataObjectHelper.PopulateFORMATETC(-1, clipFormat, types, ref formatEtc);
}
/// <summary>
/// Renders the provided graph document to an windows metafile picture (TYMED_MFPICT). Please not that this format does not support transparancy, thus the back color provided in the rendering options is used as ground brush first.
/// </summary>
/// <param name="tymed">The tymed to check.</param>
/// <param name="document">The graph document.</param>
/// <returns>Pointer to windows metafile picture (TYMED_MFPICT).</returns>
public static IntPtr RenderWindowsMetafilePict_TYMED_MFPICT(TYMED tymed, GraphDocumentBase document)
{
if (!(tymed == TYMED.TYMED_MFPICT))
throw new ArgumentException(nameof(tymed) + " is not TYMED_MFPICT");
var renderingOptions = GetRenderingOptions(document);
using (var rgbBitmap = Altaxo.Graph.GraphDocumentBaseExportActions.RenderAsBitmap(document, renderingOptions, System.Drawing.Imaging.PixelFormat.Format24bppRgb))
{
var scaledDocSize = document.Size * renderingOptions.OutputScalingFactor;
using (var enhancedMetafile = GraphDocumentExportActions.RenderAsEnhancedMetafileBitmapFormat(rgbBitmap, scaledDocSize))
{
var hEmf = enhancedMetafile.GetHenhmetafile();
return DataObjectHelper.ConvertEnhancedMetafileToWindowsMetafilePict(hEmf, scaledDocSize.X, scaledDocSize.Y);
}
}
}
/*
/// <include file='doc\DataObject.uex' path='docs/doc[@for="DataObject.GetMappedFormats1"]/*' />
/// <devdoc>
/// Returns all distinct "synonyms" for the each of the formats.
/// </devdoc>
private static string[] GetMappedFormats(string[] formats) {
ArrayList allChoices = new ArrayList();
for (int i=0; i<formats.Length; i++) {
allChoices.Add(formats[i]);
}
if (formats != null) {
for (int i=0; i<formats.Length; i++) {
string[] r = GetMappedFormats(formats[i]);
if (r != null) {
for (int j=0; j<r.Length; j++) {
allChoices.Add(r[j]);
}
}
}
}
string[] temp = new string[allChoices.Count];
allChoices.CopyTo(temp, 0);
return GetDistinctStrings(temp);
}
*/
/// <include file='doc\DataObject.uex' path='docs/doc[@for="DataObject.GetTymedUseable"]/*' />
/// <devdoc>
/// Returns true if the tymed is useable.
/// </devdoc>
/// <internalonly/>
private bool GetTymedUseable(TYMED tymed) {
for (int i=0; i<ALLOWED_TYMEDS.Length; i++) {
if ((tymed & ALLOWED_TYMEDS[i]) != 0) {
return true;
}
}
return false;
}
/// <summary>
/// Extract the date from within an OleDataObject. Pass in the requested
/// clipboard format and type (or types ORed together) that you want
/// the data in. The method will return an OleStgMedium for the type(s)
/// requested if it is available, otherwise it will return null.
/// If a single type is requested then the return value can be safely
/// cast to the requested OleStgMedium subclasss. If multiple types
/// are requested then the return value will represent the object's
/// preferred storage representation and client code will need to use
/// the 'is' operator to determine what type was returned.
/// </summary>
/// <param name="clipFormat">Name of clipboard format requested</param>
/// <param name="types">type(s) requested</param>
/// <returns>OleStgMedium instance if format and requested storage type
/// are available, otherwise null</returns>
public OleStgMedium GetData(string clipFormat, TYMED types)
{
return GetData(-1, clipFormat, types);
}
public IntPtr RenderLink(TYMED tymed)
{
return DataObjectHelper.RenderMonikerToNewStream(tymed, this.Moniker);
}
private IntPtr RenderEnhancedMetafile(TYMED tymed)
{
ComDebug.ReportInfo("{0}.RenderEnhancedMetafile", this.GetType().Name);
if (!(tymed == TYMED.TYMED_ENHMF))
throw new ArgumentException(nameof(tymed) + " is not TYMED_TYMED_ENHMF");
return EmbeddedGraphDocumentRenderingHelper.RenderEnhancedMetafile_TYMED_ENHMF(tymed, _document);
}
private IntPtr RenderBitmapDIBV5(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.RenderBitmapDIBV5");
if (!(tymed == TYMED.TYMED_HGLOBAL))
throw new ArgumentException(nameof(tymed) + " is not TYMED_HGLOBAL");
if (null != _graphDocumentBitmapImage)
{
return DataObjectHelper.RenderDIBV5BitmapToHGLOBAL(_graphDocumentBitmapImage);
}
else
{
throw new InvalidProgramException("Please report this exception to the author of the program and describe the steps to reproduce the exception");
}
}
private IntPtr RenderWindowsMetafilePict(TYMED tymed)
{
ComDebug.ReportInfo("GraphDocumentDataObject.RenderWindowsMetafilePict");
if (!(tymed == TYMED.TYMED_MFPICT))
throw new ArgumentException(nameof(tymed) + " is not TYMED_MFPICT");
if (null != _graphDocumentBitmapImage)
{
using (var rgbBitmap = GraphDocumentExportActions.ConvertBitmapToPixelFormat(_graphDocumentBitmapImage, System.Drawing.Imaging.PixelFormat.Format24bppRgb, _graphExportOptions.BackgroundColorForFormatsWithoutAlphaChannel))
{
var scaledDocSize = _graphDocumentSize * _graphExportOptions.OutputScalingFactor;
using (var enhancedMetafile = GraphDocumentExportActions.RenderAsEnhancedMetafileBitmapFormat(rgbBitmap, scaledDocSize))
{
var hEmf = enhancedMetafile.GetHenhmetafile();
return DataObjectHelper.ConvertEnhancedMetafileToWindowsMetafilePict(hEmf, scaledDocSize.X, scaledDocSize.Y);
}
}
}
else
{
throw new InvalidProgramException("Please report this exception to the author of the program and describe the steps to reproduce the exception");
}
}
