internal Blip(byte[] checkSum, int streamIndex, int imageLength, EscherType escherType, BlipSignature blipSignature)
: base(0, (uint)blipSignature, escherType, (uint)(imageLength + 16 + 1))
{
m_rgbUID = checkSum;
m_bTag = byte.MaxValue;
m_streamIndex = streamIndex;
m_imageLength = imageLength;
}
internal ImageStream(Stream stream, string name, EscherType escherType)
{
m_stream = stream;
m_name = name;
if (escherType == EscherType.MSOFBTBLIP_DIB)
{
m_offset = 14;
}
}
internal EscherHeader(ushort ver, uint inst, EscherType fbt, uint cbLength)
{
if (ver < 16)
{
m_escherHeader = ver;
}
if (inst < 4096)
{
m_escherHeader |= inst << 4;
}
if (65535 >= (int)fbt)
{
m_escherHeader = ((ushort)m_escherHeader | ((uint)fbt << 16));
}
m_cbLength = cbLength;
}
private uint AddImage(byte[] checkSum, int streamIndex, int imageLength, EscherType escherType, BlipType blipType, BlipSignature blipSignature, int workSheetId)
{
if (m_clusters.ContainsKey(workSheetId))
{
int dgID = m_clusters[workSheetId];
m_drawingGroup.IncrementShapeCount(dgID);
}
else
{
m_clusters.Add(workSheetId, (ushort)(m_clusters.Count + 1));
int dgID = m_clusters.Count;
m_drawingGroup.AddCluster(dgID);
m_drawingGroup.IncrementShapeCount(dgID);
}
return(m_bStoreContainer.AddImage(checkSum, streamIndex, imageLength, escherType, blipType, blipSignature));
}
private void UpdateImageStreamDGC(string name, Stream imageData, EscherType escherType, out int streamIndex)
{
if (m_images != null)
{
for (int i = 0; i < m_images.Count; i++)
{
if (m_images[i].Name.Equals(name))
{
streamIndex = i;
return;
}
}
}
else
{
m_images = new List <ImageStream>();
}
ImageStream item = new ImageStream(imageData, name, escherType);
m_images.Add(item);
streamIndex = m_images.Count - 1;
}
internal uint AddImage(byte[] checkSum, int streamIndex, int imageLength, EscherType escherType, BlipType blipType, BlipSignature blipSignature)
{
if (m_bSEList == null)
{
m_bSEList = new Hashtable();
}
string @string = Encoding.ASCII.GetString(checkSum);
if (m_bSEList.ContainsKey(@string))
{
BlipStoreEntry obj = (BlipStoreEntry)m_bSEList[@string];
obj.ReferenceCount++;
return(obj.ReferenceIndex);
}
if (m_blipList == null)
{
m_blipList = new ArrayList();
}
Blip blip = new Blip(checkSum, streamIndex, imageLength, escherType, blipSignature);
m_blipList.Add(blip);
base.Instance = (uint)m_blipList.Count;
BlipStoreEntry value = new BlipStoreEntry(checkSum, blipType, blip.Length, (uint)m_blipList.Count);
m_bSEList.Add(@string, value);
m_totalLength += 44 + imageLength + 8 + 16 + 1;
return((uint)m_blipList.Count);
}
internal uint AddImage(Stream imageData, ImageFormat format, string imageName, int workSheetId, out uint startSPID, out ushort dgID)
{
EscherType escherType = EscherType.MSOFBTUNKNOWN;
BlipType blipType = BlipType.MSOBLIPUNKNOWN;
BlipSignature blipSignature = BlipSignature.MSOBIUNKNOWN;
if (format.Equals(ImageFormat.Bmp))
{
escherType = EscherType.MSOFBTBLIP_DIB;
blipType = BlipType.MSOBLIPDIB;
blipSignature = BlipSignature.MSOBIDIB;
}
else if (format.Equals(ImageFormat.Jpeg))
{
escherType = EscherType.MSOFBTBLIP_JPEG;
blipType = BlipType.MSOBLIPJPEG;
blipSignature = BlipSignature.MSOBIJFIF;
}
else if (format.Equals(ImageFormat.Gif))
{
escherType = EscherType.MSOFBTBLIP_GIF;
blipType = BlipType.MSOBLIPPNG;
blipSignature = BlipSignature.MSOBIPNG;
}
else if (format.Equals(ImageFormat.Png))
{
escherType = EscherType.MSOFBTBLIP_GIF;
blipType = BlipType.MSOBLIPPNG;
blipSignature = BlipSignature.MSOBIPNG;
}
if (m_clusters == null)
{
m_clusters = new Dictionary <int, ushort>();
}
if (m_bStoreContainer == null)
{
m_bStoreContainer = new BlipStoreContainer();
}
if (m_imageTable == null)
{
m_imageTable = new Dictionary <string, CheckSumImage>();
}
int num = (int)imageData.Length;
CheckSumImage checkSumImage;
if (m_imageTable.ContainsKey(imageName))
{
checkSumImage = m_imageTable[imageName];
}
else
{
byte[] checkSum = CheckSum(imageData);
int streamIndex = m_bStoreContainer.GetStreamPosFromCheckSum(checkSum);
if (streamIndex == -1)
{
UpdateImageStreamDGC(imageName, imageData, escherType, out streamIndex);
}
checkSumImage = new CheckSumImage(checkSum, streamIndex);
m_imageTable.Add(imageName, checkSumImage);
}
if (escherType == EscherType.MSOFBTBLIP_DIB)
{
num -= 14;
StreamList[checkSumImage.StreamIndex].Offset = 14;
}
uint result = AddImage(checkSumImage.CheckSum, checkSumImage.StreamIndex, num, escherType, blipType, blipSignature, workSheetId);
dgID = m_clusters[workSheetId];
startSPID = m_drawingGroup.GetStartingSPID(dgID);
return(result);
}
