/// <summary> /// Generates an escher record including the any children contained under that record. /// An exception is thrown if the record could not be generated. /// </summary> /// <param name="data">The byte array containing the records</param> /// <param name="offset">The starting offset into the byte array</param> /// <returns>The generated escher record</returns> public virtual EscherRecord CreateRecord(byte[] data, int offset) { EscherRecord.EscherRecordHeader header = EscherRecord.EscherRecordHeader.ReadHeader(data, offset); // Options of 0x000F means container record // However, EscherTextboxRecord are containers of records for the // host application, not of other Escher records, so treat them // differently if ((header.Options & (short)0x000F) == (short)0x000F && header.RecordId != EscherTextboxRecord.RECORD_ID) { EscherContainerRecord r = new EscherContainerRecord(); r.RecordId = header.RecordId; r.Options = header.Options; return(r); } if (header.RecordId >= EscherBlipRecord.RECORD_ID_START && header.RecordId <= EscherBlipRecord.RECORD_ID_END) { EscherBlipRecord r; if (header.RecordId == EscherBitmapBlip.RECORD_ID_DIB || header.RecordId == EscherBitmapBlip.RECORD_ID_JPEG || header.RecordId == EscherBitmapBlip.RECORD_ID_PNG) { r = new EscherBitmapBlip(); } else if (header.RecordId == EscherMetafileBlip.RECORD_ID_EMF || header.RecordId == EscherMetafileBlip.RECORD_ID_WMF || header.RecordId == EscherMetafileBlip.RECORD_ID_PICT) { r = new EscherMetafileBlip(); } else { r = new EscherBlipRecord(); } r.RecordId = header.RecordId; r.Options = header.Options; return(r); } //ConstructorInfo recordConstructor = (ConstructorInfo) recordsMap[header.RecordId]; ConstructorInfo recordConstructor = null; if (recordsMap.ContainsKey(header.RecordId)) { recordConstructor = recordsMap[header.RecordId]; } EscherRecord escherRecord = null; if (recordConstructor == null) { return(new UnknownEscherRecord()); } try { escherRecord = (EscherRecord)recordConstructor.Invoke(new object[] { }); //escherRecord = (EscherRecord)Activator.CreateInstance(recordConstructor); } catch (Exception) { return(new UnknownEscherRecord()); } escherRecord.RecordId = header.RecordId; escherRecord.Options = header.Options; return(escherRecord); }
/// <summary> /// Adds a picture to the workbook. /// </summary> /// <param name="pictureData">The bytes of the picture</param> /// <param name="format">The format of the picture. One of /// PictureType.</param> /// <returns>the index to this picture (1 based).</returns> public int AddPicture(byte[] pictureData, Zephyr.Utils.NPOI.SS.UserModel.PictureType format) { InitDrawings(); byte[] uid; using (MD5 md5 = MD5.Create()) { uid = md5.ComputeHash(pictureData); } EscherBitmapBlip blipRecord = new EscherBitmapBlip(); blipRecord.RecordId = (short)(EscherBitmapBlip.RECORD_ID_START + format); switch (format) { case Zephyr.Utils.NPOI.SS.UserModel.PictureType.EMF: blipRecord.Options = HSSFPictureData.MSOBI_EMF; break; case Zephyr.Utils.NPOI.SS.UserModel.PictureType.WMF: blipRecord.Options = HSSFPictureData.MSOBI_WMF; break; case Zephyr.Utils.NPOI.SS.UserModel.PictureType.PICT: blipRecord.Options = HSSFPictureData.MSOBI_PICT; break; case Zephyr.Utils.NPOI.SS.UserModel.PictureType.PNG: blipRecord.Options = HSSFPictureData.MSOBI_PNG; break; case Zephyr.Utils.NPOI.SS.UserModel.PictureType.JPEG: blipRecord.Options = HSSFPictureData.MSOBI_JPEG; break; case Zephyr.Utils.NPOI.SS.UserModel.PictureType.DIB: blipRecord.Options = HSSFPictureData.MSOBI_DIB; break; } blipRecord.UID = uid; blipRecord.Marker = (byte)0xFF; blipRecord.PictureData = pictureData; EscherBSERecord r = new EscherBSERecord(); r.RecordId = EscherBSERecord.RECORD_ID; r.Options = (short)(0x0002 | ((int)format << 4)); r.BlipTypeMacOS = (byte)format; r.BlipTypeWin32 = (byte)format; r.UID = uid; r.Tag = (short)0xFF; r.Size = pictureData.Length + 25; r.Ref = 1; r.Offset = 0; r.BlipRecord = blipRecord; return workbook.AddBSERecord(r); }
/// <summary> /// Generates an escher record including the any children contained under that record. /// An exception is thrown if the record could not be generated. /// </summary> /// <param name="data">The byte array containing the records</param> /// <param name="offset">The starting offset into the byte array</param> /// <returns>The generated escher record</returns> public virtual EscherRecord CreateRecord(byte[] data, int offset) { EscherRecord.EscherRecordHeader header = EscherRecord.EscherRecordHeader.ReadHeader(data, offset); // Options of 0x000F means container record // However, EscherTextboxRecord are containers of records for the // host application, not of other Escher records, so treat them // differently if ((header.Options & (short)0x000F) == (short)0x000F && header.RecordId != EscherTextboxRecord.RECORD_ID) { EscherContainerRecord r = new EscherContainerRecord(); r.RecordId = header.RecordId; r.Options = header.Options; return r; } if (header.RecordId >= EscherBlipRecord.RECORD_ID_START && header.RecordId <= EscherBlipRecord.RECORD_ID_END) { EscherBlipRecord r; if (header.RecordId == EscherBitmapBlip.RECORD_ID_DIB || header.RecordId == EscherBitmapBlip.RECORD_ID_JPEG || header.RecordId == EscherBitmapBlip.RECORD_ID_PNG) { r = new EscherBitmapBlip(); } else if (header.RecordId == EscherMetafileBlip.RECORD_ID_EMF || header.RecordId == EscherMetafileBlip.RECORD_ID_WMF || header.RecordId == EscherMetafileBlip.RECORD_ID_PICT) { r = new EscherMetafileBlip(); } else { r = new EscherBlipRecord(); } r.RecordId = header.RecordId; r.Options = header.Options; return r; } //ConstructorInfo recordConstructor = (ConstructorInfo) recordsMap[header.RecordId]; ConstructorInfo recordConstructor = null; if (recordsMap.ContainsKey(header.RecordId)) recordConstructor = recordsMap[header.RecordId]; EscherRecord escherRecord = null; if (recordConstructor == null) { return new UnknownEscherRecord(); } try { escherRecord = (EscherRecord)recordConstructor.Invoke(new object[] { }); //escherRecord = (EscherRecord)Activator.CreateInstance(recordConstructor); } catch (Exception) { return new UnknownEscherRecord(); } escherRecord.RecordId = header.RecordId; escherRecord.Options = header.Options; return escherRecord; }