/// <summary>
/// the DIB readed should solve the issue reported here: https://sourceforge.net/projects/greenshot/forums/forum/676083/topic/6354353/index/page/1
/// </summary>
/// <returns>Image</returns>
private static Image GetDIBImage(IDataObject dataObejct)
{
try {
// If the EnableSpecialDIBClipboardReader flag in the config is set, use the code from:
// http://www.thomaslevesque.com/2009/02/05/wpf-paste-an-image-from-the-clipboard/
// to read the DeviceIndependentBitmap from the clipboard, this might fix bug 3576125
if (config.EnableSpecialDIBClipboardReader)
{
MemoryStream dibStream = GetFromDataObject(dataObejct, DataFormats.Dib) as MemoryStream;
if (isValidStream(dibStream))
{
LOG.Info("Found valid DIB stream, trying to process it.");
byte[] dibBuffer = new byte[dibStream.Length];
dibStream.Read(dibBuffer, 0, dibBuffer.Length);
BitmapInfoHeader infoHeader = BinaryStructHelper.FromByteArray <BitmapInfoHeader>(dibBuffer);
LOG.InfoFormat("Using special DIB format reader for biCompression {0}", infoHeader.biCompression);
int fileHeaderSize = Marshal.SizeOf(typeof(BitmapFileHeader));
uint infoHeaderSize = infoHeader.biSize;
int fileSize = (int)(fileHeaderSize + infoHeader.biSize + infoHeader.biSizeImage);
BitmapFileHeader fileHeader = new BitmapFileHeader();
fileHeader.bfType = BitmapFileHeader.BM;
fileHeader.bfSize = fileSize;
fileHeader.bfReserved1 = 0;
fileHeader.bfReserved2 = 0;
fileHeader.bfOffBits = (int)(fileHeaderSize + infoHeaderSize + infoHeader.biClrUsed * 4);
byte[] fileHeaderBytes = BinaryStructHelper.ToByteArray <BitmapFileHeader>(fileHeader);
using (MemoryStream bitmapStream = new MemoryStream()) {
bitmapStream.Write(fileHeaderBytes, 0, fileHeaderSize);
bitmapStream.Write(dibBuffer, 0, dibBuffer.Length);
bitmapStream.Seek(0, SeekOrigin.Begin);
using (Image tmpImage = Image.FromStream(bitmapStream)) {
if (tmpImage != null)
{
return(ImageHelper.Clone(tmpImage));
}
}
}
}
}
else
{
LOG.Info("Skipping special DIB format reader as it's disabled in the configuration.");
}
} catch (Exception dibEx) {
LOG.Error("Problem retrieving DIB from clipboard.", dibEx);
}
return(null);
}
public static void SetClipboardData(ISurface surface)
{
DataObject dataObject = new DataObject();
// This will work for Office and most other applications
//ido.SetData(DataFormats.Bitmap, true, image);
MemoryStream dibStream = null;
MemoryStream dibV5Stream = null;
MemoryStream pngStream = null;
Image imageToSave = null;
bool disposeImage = false;
try
{
SurfaceOutputSettings outputSettings = new SurfaceOutputSettings(OutputFormat.png, 100, false);
// Create the image which is going to be saved so we don't create it multiple times
disposeImage = ImageOutput.CreateImageFromSurface(surface, outputSettings, out imageToSave);
try
{
// Create PNG stream
if (config.ClipboardFormats.Contains(ClipboardFormat.PNG))
{
pngStream = new MemoryStream();
// PNG works for e.g. Powerpoint
SurfaceOutputSettings pngOutputSettings = new SurfaceOutputSettings(OutputFormat.png, 100, false);
ImageOutput.SaveToStream(imageToSave, null, pngStream, pngOutputSettings);
pngStream.Seek(0, SeekOrigin.Begin);
// Set the PNG stream
dataObject.SetData(FORMAT_PNG, false, pngStream);
}
}
catch (Exception pngEX)
{
LOG.Error("Error creating PNG for the Clipboard.", pngEX);
}
try
{
if (config.ClipboardFormats.Contains(ClipboardFormat.DIB))
{
using (MemoryStream tmpBmpStream = new MemoryStream())
{
// Save image as BMP
SurfaceOutputSettings bmpOutputSettings = new SurfaceOutputSettings(OutputFormat.bmp, 100, false);
ImageOutput.SaveToStream(imageToSave, null, tmpBmpStream, bmpOutputSettings);
dibStream = new MemoryStream();
// Copy the source, but skip the "BITMAPFILEHEADER" which has a size of 14
dibStream.Write(tmpBmpStream.GetBuffer(), BITMAPFILEHEADER_LENGTH, (int)tmpBmpStream.Length - BITMAPFILEHEADER_LENGTH);
}
// Set the DIB to the clipboard DataObject
dataObject.SetData(DataFormats.Dib, true, dibStream);
}
}
catch (Exception dibEx)
{
LOG.Error("Error creating DIB for the Clipboard.", dibEx);
}
// CF_DibV5
try
{
if (config.ClipboardFormats.Contains(ClipboardFormat.DIBV5))
{
// Create the stream for the clipboard
dibV5Stream = new MemoryStream();
// Create the BITMAPINFOHEADER
BITMAPINFOHEADER header = new BITMAPINFOHEADER(imageToSave.Width, imageToSave.Height, 32);
// Make sure we have BI_BITFIELDS, this seems to be normal for Format17?
header.biCompression = BI_COMPRESSION.BI_BITFIELDS;
// Create a byte[] to write
byte[] headerBytes = BinaryStructHelper.ToByteArray <BITMAPINFOHEADER>(header);
// Write the BITMAPINFOHEADER to the stream
dibV5Stream.Write(headerBytes, 0, headerBytes.Length);
// As we have specified BI_COMPRESSION.BI_BITFIELDS, the BitfieldColorMask needs to be added
BitfieldColorMask colorMask = new BitfieldColorMask();
// Make sure the values are set
colorMask.InitValues();
// Create the byte[] from the struct
byte[] colorMaskBytes = BinaryStructHelper.ToByteArray <BitfieldColorMask>(colorMask);
Array.Reverse(colorMaskBytes);
// Write to the stream
dibV5Stream.Write(colorMaskBytes, 0, colorMaskBytes.Length);
// Create the raw bytes for the pixels only
byte[] bitmapBytes = BitmapToByteArray((Bitmap)imageToSave);
// Write to the stream
dibV5Stream.Write(bitmapBytes, 0, bitmapBytes.Length);
// Set the DIBv5 to the clipboard DataObject
dataObject.SetData(FORMAT_17, true, dibV5Stream);
}
}
catch (Exception dibEx)
{
LOG.Error("Error creating DIB for the Clipboard.", dibEx);
}
// Set the HTML
if (config.ClipboardFormats.Contains(ClipboardFormat.HTML))
{
string tmpFile = ImageOutput.SaveToTmpFile(surface, new SurfaceOutputSettings(OutputFormat.png, 100, false), null);
string html = getHTMLString(surface, tmpFile);
dataObject.SetText(html, TextDataFormat.Html);
}
else if (config.ClipboardFormats.Contains(ClipboardFormat.HTMLDATAURL))
{
string html;
using (MemoryStream tmpPNGStream = new MemoryStream())
{
SurfaceOutputSettings pngOutputSettings = new SurfaceOutputSettings(OutputFormat.png, 100, false);
// Do not allow to reduce the colors, some applications dislike 256 color images
// reported with bug #3594681
pngOutputSettings.DisableReduceColors = true;
// Check if we can use the previously used image
if (imageToSave.PixelFormat != PixelFormat.Format8bppIndexed)
{
ImageOutput.SaveToStream(imageToSave, surface, tmpPNGStream, pngOutputSettings);
}
else
{
ImageOutput.SaveToStream(surface, tmpPNGStream, pngOutputSettings);
}
html = getHTMLDataURLString(surface, tmpPNGStream);
}
dataObject.SetText(html, TextDataFormat.Html);
}
}
finally
{
// we need to use the SetDataOject before the streams are closed otherwise the buffer will be gone!
// Check if Bitmap is wanted
if (config.ClipboardFormats.Contains(ClipboardFormat.BITMAP))
{
dataObject.SetImage(imageToSave);
// Place the DataObject to the clipboard
SetDataObject(dataObject, true);
}
else
{
// Place the DataObject to the clipboard
SetDataObject(dataObject, true);
}
if (pngStream != null)
{
pngStream.Dispose();
pngStream = null;
}
if (dibStream != null)
{
dibStream.Dispose();
dibStream = null;
}
if (dibV5Stream != null)
{
dibV5Stream.Dispose();
dibV5Stream = null;
}
// cleanup if needed
if (disposeImage && imageToSave != null)
{
imageToSave.Dispose();
}
}
}
/// <summary>
/// Helper method to try to get an image in the specified format from the dataObject
/// the DIB readed should solve the issue reported here: https://sourceforge.net/projects/greenshot/forums/forum/676083/topic/6354353/index/page/1
/// It also supports Format17/DibV5, by using the following information: http://stackoverflow.com/a/14335591
/// </summary>
/// <param name="format">string with the format</param>
/// <param name="dataObject">IDataObject</param>
/// <returns>Image or null</returns>
private static Image GetImageForFormat(string format, IDataObject dataObject)
{
object clipboardObject = GetFromDataObject(dataObject, format);
MemoryStream imageStream = clipboardObject as MemoryStream;
if (!isValidStream(imageStream))
{
// TODO: add "HTML Format" support here...
return(clipboardObject as Image);
}
else
{
if (config.EnableSpecialDIBClipboardReader)
{
if (format == FORMAT_17 || format == DataFormats.Dib)
{
LOG.Info("Found DIB stream, trying to process it.");
try
{
byte[] dibBuffer = new byte[imageStream.Length];
imageStream.Read(dibBuffer, 0, dibBuffer.Length);
BITMAPINFOHEADER infoHeader = BinaryStructHelper.FromByteArray <BITMAPINFOHEADER>(dibBuffer);
if (!infoHeader.IsDibV5)
{
LOG.InfoFormat("Using special DIB <v5 format reader with biCompression {0}", infoHeader.biCompression);
int fileHeaderSize = Marshal.SizeOf(typeof(BITMAPFILEHEADER));
uint infoHeaderSize = infoHeader.biSize;
int fileSize = (int)(fileHeaderSize + infoHeader.biSize + infoHeader.biSizeImage);
BITMAPFILEHEADER fileHeader = new BITMAPFILEHEADER();
fileHeader.bfType = BITMAPFILEHEADER.BM;
fileHeader.bfSize = fileSize;
fileHeader.bfReserved1 = 0;
fileHeader.bfReserved2 = 0;
fileHeader.bfOffBits = (int)(fileHeaderSize + infoHeaderSize + infoHeader.biClrUsed * 4);
byte[] fileHeaderBytes = BinaryStructHelper.ToByteArray <BITMAPFILEHEADER>(fileHeader);
using (MemoryStream bitmapStream = new MemoryStream())
{
bitmapStream.Write(fileHeaderBytes, 0, fileHeaderSize);
bitmapStream.Write(dibBuffer, 0, dibBuffer.Length);
bitmapStream.Seek(0, SeekOrigin.Begin);
using (Image tmpImage = Image.FromStream(bitmapStream))
{
if (tmpImage != null)
{
return(ImageHelper.Clone(tmpImage));
}
}
}
}
else
{
LOG.Info("Using special DIBV5 / Format17 format reader");
// CF_DIBV5
IntPtr gcHandle = IntPtr.Zero;
try
{
GCHandle handle = GCHandle.Alloc(dibBuffer, GCHandleType.Pinned);
gcHandle = GCHandle.ToIntPtr(handle);
return(new Bitmap(infoHeader.biWidth, infoHeader.biHeight, -(int)(infoHeader.biSizeImage / infoHeader.biHeight),
infoHeader.biBitCount == 32 ? PixelFormat.Format32bppArgb : PixelFormat.Format24bppRgb,
new IntPtr(handle.AddrOfPinnedObject().ToInt32() + infoHeader.OffsetToPixels + (infoHeader.biHeight - 1) * (int)(infoHeader.biSizeImage / infoHeader.biHeight))));
}
catch (Exception ex)
{
LOG.Error("Problem retrieving Format17 from clipboard.", ex);
}
finally
{
if (gcHandle == IntPtr.Zero)
{
GCHandle.FromIntPtr(gcHandle).Free();
}
}
}
}
catch (Exception dibEx)
{
LOG.Error("Problem retrieving DIB from clipboard.", dibEx);
}
}
}
else
{
LOG.Info("Skipping special DIB format reader as it's disabled in the configuration.");
}
try
{
imageStream.Seek(0, SeekOrigin.Begin);
using (Image tmpImage = Image.FromStream(imageStream, true, true))
{
if (tmpImage != null)
{
LOG.InfoFormat("Got image with clipboard format {0} from the clipboard.", format);
return(ImageHelper.Clone(tmpImage));
}
}
}
catch (Exception streamImageEx)
{
LOG.Error(string.Format("Problem retrieving {0} from clipboard.", format), streamImageEx);
}
}
return(null);
}
