/// <summary> /// Is there a Bitmap on the clipboard? /// </summary> /// <param name="clipboardAccessToken">IClipboardAccessToken</param> /// <returns>bool</returns> public static bool HasImage(this IClipboardAccessToken clipboardAccessToken) { var formats = clipboardAccessToken.AvailableFormats(); if (formats.Intersect(SupportedBitmapFormats).Any()) { return(true); } return(clipboardAccessToken.GetFilenames() .Select(filename => Path.GetExtension(filename).ToLowerInvariant()) .Intersect(SupportedExtensions) .Any()); }
/// <summary> /// A special format 17 bitmap reader /// </summary> /// <param name="clipboardAccessToken">IClipboardAccessToken</param> /// <returns>Bitmap or null</returns> public static Bitmap GetAsFormat17(this IClipboardAccessToken clipboardAccessToken) { var formats = clipboardAccessToken.AvailableFormats().ToList(); if (!formats.Contains("Format17")) { return(null); } var format17Bytes = clipboardAccessToken.GetAsBytes("Format17"); var infoHeader = BinaryStructHelper.FromByteArray <BitmapInfoHeader>(format17Bytes); if (!infoHeader.IsDibV5) { return(null); } // Using special DIBV5 / Format17 format reader // CF_DIBV5 var gcHandle = IntPtr.Zero; try { var handle = GCHandle.Alloc(format17Bytes, GCHandleType.Pinned); gcHandle = GCHandle.ToIntPtr(handle); return (new Bitmap(infoHeader.Width, infoHeader.Height, -(int)(infoHeader.SizeImage / infoHeader.Height), infoHeader.BitCount == 32 ? PixelFormat.Format32bppArgb : PixelFormat.Format24bppRgb, new IntPtr(handle.AddrOfPinnedObject().ToInt32() + infoHeader.OffsetToPixels + (infoHeader.Height - 1) * (int)(infoHeader.SizeImage / infoHeader.Height)) )); } catch (Exception ex) { Log.Error().WriteLine(ex, "Problem retrieving Format17 from clipboard."); } finally { if (gcHandle == IntPtr.Zero) { GCHandle.FromIntPtr(gcHandle).Free(); } } return(null); }
/// <summary> /// Get a DIB from the Clipboard /// </summary> /// <param name="clipboardAccessToken"></param> /// <returns>Bitmap or null</returns> public static Bitmap GetAsDeviceIndependendBitmap(this IClipboardAccessToken clipboardAccessToken) { var formats = clipboardAccessToken.AvailableFormats().ToList(); if (!formats.Contains(StandardClipboardFormats.Bitmap.AsString())) { return(null); } var format17Bytes = clipboardAccessToken.GetAsBytes(StandardClipboardFormats.Bitmap.AsString()); var infoHeader = BinaryStructHelper.FromByteArray <BitmapInfoHeader>(format17Bytes); if (infoHeader.IsDibV5) { Log.Warn().WriteLine("Getting DIBV5 (format 17) when requesting DIB"); return(null); } // Bitmap version older than 5 var fileHeaderSize = Marshal.SizeOf(typeof(BitmapFileHeader)); var fileHeader = BitmapFileHeader.Create(infoHeader); var fileHeaderBytes = BinaryStructHelper.ToByteArray(fileHeader); using (var bitmapStream = new MemoryStream()) { bitmapStream.Write(fileHeaderBytes, 0, fileHeaderSize); bitmapStream.Write(format17Bytes, 0, format17Bytes.Length); bitmapStream.Seek(0, SeekOrigin.Begin); var image = BitmapHelper.FromStream(bitmapStream); if (image != null) { return(image); } } return(null); }