public static void Write(Sequence seq, string path)
{
if (string.IsNullOrEmpty(path))
{
throw new InvalidOperationException();
}
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
string sequenceFilename = Path.Combine(path, "Quill.json");
string paintDataFilename = Path.Combine(path, "Quill.qbin");
string stateFilename = Path.Combine(path, "State.json");
// Write the qbin file first to update the data offsets.
using (FileStream qbinStream = File.Create(paintDataFilename))
{
QBinWriter qbinWriter = new QBinWriter(qbinStream);
WriteLastStrokeId(seq, qbinWriter);
WriteDrawingData(seq.RootLayer, qbinWriter);
qbinWriter.Flush();
}
WriteManifest(seq, sequenceFilename);
WriteState(stateFilename);
}
private static void WriteLastStrokeId(Sequence seq, QBinWriter qbinWriter)
{
// 8-byte header.
// This value is sometimes seemingly broken in quill files.
qbinWriter.Write(seq.LastStrokeId);
int padding = 0;
qbinWriter.Write(padding);
}
/// <summary>
/// Recursive function to write the paint data to file and update the layers offsets.
/// This is called with the root layer and will write all the data for the sequence.
/// </summary>
private static void WriteDrawingData(Layer layer, QBinWriter qbinWriter)
{
if (layer.Type == LayerType.Group)
{
foreach (Layer l in ((LayerGroup)layer).Children)
{
if (l != null)
{
WriteDrawingData(l, qbinWriter);
}
}
}
else if (layer.Type == LayerType.Paint)
{
foreach (Drawing drawing in ((LayerPaint)layer).Drawings)
{
drawing.DataFileOffset = qbinWriter.BaseStream.Position;
qbinWriter.Write(drawing.Data);
}
}
}