PostItCommand decodeAddCommand(byte[] data)
{
string commndStr = Encoding.UTF8.GetString(data);
if (!commndStr.Contains(Encoding.UTF8.GetString(PostItCommand.ADD_PREFIX)) ||
!commndStr.Contains(Encoding.UTF8.GetString(PostItCommand.ADD_POSTFIX)))
{
return(null);
}
if (!commndStr.StartsWith(Encoding.UTF8.GetString(PostItCommand.ADD_PREFIX)))
{
return(null);
}
//start to extract part of the message;
//structure of an Add command
//<ADD> ID X Y Orientation Size DataType Data </ADD>
PostItCommand command = new PostItCommand();
command.CommandType = PostItCommandType.Add;
int index = PostItCommand.ADD_PREFIX.Length;
PostItNote note = new PostItNote();
//ID
byte[] buffer = new byte[4];
Array.Copy(data, index, buffer, 0, 4);
note.Id = Utilities.UtilitiesLib.Bytes2Int(buffer);
index += 4;
//X
Array.Copy(data, index, buffer, 0, 4);
note.CenterX = Utilities.UtilitiesLib.Bytes2Float(buffer);
index += 4;
//Y
Array.Copy(data, index, buffer, 0, 4);
note.CenterY = Utilities.UtilitiesLib.Bytes2Float(buffer);
index += 4;
//skip 4 bytes of orientation, can be used in the future
index += 4;
//get size of the content
Array.Copy(data, index, buffer, 0, 4);
int contentSize = Utilities.UtilitiesLib.Bytes2Int(buffer);
index += 4;
//get content data type
Array.Copy(data, index, buffer, 0, 4);
note.DataType = PostItCommand.GetPostItContentType(buffer);
index += 4;
//start getting content
buffer = new byte[contentSize];
Array.Copy(data, index, buffer, 0, buffer.Length);
note.ParseContentFromBytes(note.DataType, buffer);
command.CommandData = note;
return(command);
}
public void handleDownloadedStreamsFromCloud(Dictionary <int, Stream> noteStreams)
{
foreach (int noteID in noteStreams.Keys)
{
Stream stream = noteStreams[noteID];
if (stream is MemoryStream)
{
PostItNote note = new PostItNote();
note.Id = noteID;
note.CenterX = 0;
note.CenterY = 0;
note.DataType = PostItContentDataType.WritingImage;
note.ParseContentFromBytes(note.DataType, (stream as MemoryStream).ToArray());
if (newNoteExtractedEventHandler != null)
{
newNoteExtractedEventHandler(note);
}
}
}
}