/// <summary>
/// Gets a complete image for the page
/// </summary>
/// <returns></returns>
public System.Drawing.Bitmap BuildPageImage()
{
int subsample = 1;
if (this.Info == null && Document.FormChunk.Children[0].ChunkID == "DJVU" && Document.FormChunk.Children[1] is InfoChunk)
{
this._info = (InfoChunk)Document.FormChunk.Children[1];
}
int width = Info.Width / subsample;
int height = Info.Height / subsample;
var map = GetMap(new GRect(0, 0, width, height), subsample, null);
if (map == null)
{
return(new Bitmap(Info.Width, Info.Height));
}
int[] pixels = new int[width * height];
map.FillRgbPixels(0, 0, width, height, pixels, 0, width);
var image = ConvertDataToImage(pixels);
if (IsInverted == true)
{
image = InvertImage(image);
}
return(image);
}
internal void UpdateSize()
{
if (InfoChunk == null || SoundChunk == null || HydraChunk == null)
{
return;
}
_size = 4
+ InfoChunk.UpdateSize() + 8
+ SoundChunk.UpdateSize() + 8
+ HydraChunk.UpdateSize() + 8;
}
public void Save(string path)
{
using (var writer = new EndianBinaryWriter(File.Open(path, FileMode.Create)))
{
AddTerminals();
writer.Write("RIFF", 4);
writer.Write(_size);
writer.Write("sfbk", 4);
InfoChunk.Write(writer);
SoundChunk.Write(writer);
HydraChunk.Write(writer);
}
}
public void Load(byte[] data)
{
int dataOffset = 0;
var header = new Header();
header.Load(data, ref dataOffset);
for (int i = 0; i < header.ChunkCount; i++)
{
BaseChunk baseChunk;
//Read the first four bytes to get the tag.
string tagName = FSHelpers.ReadString(data, dataOffset, 4);
switch (tagName)
{
case "INF1":
baseChunk = new InfoChunk();
Info = baseChunk as InfoChunk;
break;
case "VTX1":
baseChunk = new VertexChunk();
Vertexes = baseChunk as VertexChunk;
break;
case "EVP1":
baseChunk = new EnvelopeChunk();
Envelopes = baseChunk as EnvelopeChunk;
break;
case "DRW1":
baseChunk = new DrawChunk();
Draw = baseChunk as DrawChunk;
break;
case "JNT1":
baseChunk = new JointChunk();
Joints = baseChunk as JointChunk;
break;
case "SHP1":
baseChunk = new ShapeChunk();
Shapes = baseChunk as ShapeChunk;
break;
case "TEX1":
baseChunk = new TextureChunk();
Textures = baseChunk as TextureChunk;
break;
case "MAT3":
baseChunk = new Material3Chunk();
Materials = baseChunk as Material3Chunk;
break;
case "ANK1":
default:
Console.WriteLine("Found unknown chunk {0}!", tagName);
baseChunk = new DefaultChunk();
break;
}
baseChunk.Load(data, ref dataOffset);
}
}
public static IDjvuNode CreateEncodedDjvuNode(IDjvuWriter writer, IDjvuElement parent, ChunkType chunkType, long length)
{
IDjvuNode result = null;
switch (chunkType)
{
case ChunkType.Djvm:
result = new DjvmChunk(writer, parent, length);
break;
case ChunkType.Djvu:
result = new DjvuChunk(writer, parent, length);
break;
case ChunkType.Djvi:
result = new DjviChunk(writer, parent, length);
break;
case ChunkType.Thum:
result = new ThumChunk(writer, parent, length);
break;
case ChunkType.Dirm:
result = new DirmChunk(writer, parent, length);
break;
case ChunkType.Navm:
result = new NavmChunk(writer, parent, length);
break;
case ChunkType.Anta:
result = new AntaChunk(writer, parent, length);
break;
case ChunkType.Antz:
result = new AntzChunk(writer, parent, length);
break;
case ChunkType.Txta:
result = new TxtaChunk(writer, parent, length);
break;
case ChunkType.Txtz:
result = new TxtzChunk(writer, parent, length);
break;
case ChunkType.Djbz:
result = new DjbzChunk(writer, parent, length);
break;
case ChunkType.Sjbz:
result = new SjbzChunk(writer, parent, length);
break;
case ChunkType.FG44:
result = new FG44Chunk(writer, parent, length);
break;
case ChunkType.BG44:
result = new BG44Chunk(writer, parent, length);
break;
case ChunkType.TH44:
result = new TH44Chunk(writer, parent, length);
break;
case ChunkType.BM44:
result = new BM44Chunk(writer, parent, length);
break;
case ChunkType.BM44Form:
result = new BM44Form(writer, parent, length);
break;
case ChunkType.PM44:
result = new PM44Chunk(writer, parent, length);
break;
case ChunkType.PM44Form:
result = new PM44Form(writer, parent, length);
break;
case ChunkType.Wmrm:
result = new WmrmChunk(writer, parent, length);
break;
case ChunkType.FGbz:
result = new FGbzChunk(writer, parent, length);
break;
case ChunkType.Info:
result = new InfoChunk(writer, parent, length);
break;
case ChunkType.Incl:
result = new InclChunk(writer, parent, length);
break;
case ChunkType.BGjp:
result = new BGjpChunk(writer, parent, length);
break;
case ChunkType.FGjp:
result = new FGjpChunk(writer, parent, length);
break;
case ChunkType.Smmr:
result = new SmmrChunk(writer, parent, length);
break;
default:
throw new DjvuInvalidOperationException($"Chunk type is not supported in encoding. ChunkType: {chunkType}");
}
return(result);
}
/// <summary>
/// Builds the appropriate chunk for the ID
/// </summary>
/// <returns></returns>
public static IDjvuNode CreateDecodedDjvuNode(IDjvuReader reader, IDjvuDocument rootDocument,
IDjvuElement parent, ChunkType chunkType,
string chunkID = "", long length = 0)
{
IDjvuNode result = null;
switch (chunkType)
{
case ChunkType.Djvm:
result = new DjvmChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Djvu:
result = new DjvuChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Djvi:
result = new DjviChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Thum:
result = new ThumChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Dirm:
result = new DirmChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Navm:
result = new NavmChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Anta:
result = new AntaChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Antz:
result = new AntzChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Txta:
result = new TxtaChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Txtz:
result = new TxtzChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Djbz:
result = new DjbzChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Sjbz:
result = new SjbzChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.FG44:
result = new FG44Chunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.BG44:
result = new BG44Chunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.TH44:
result = new TH44Chunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.BM44:
result = new BM44Chunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.BM44Form:
result = new BM44Form(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.PM44:
result = new PM44Chunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.PM44Form:
result = new PM44Form(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Wmrm:
result = new WmrmChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.FGbz:
result = new FGbzChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Info:
result = new InfoChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Incl:
result = new InclChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.BGjp:
result = new BGjpChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.FGjp:
result = new FGjpChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Smmr:
result = new SmmrChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Cida:
result = new CidaChunk(reader, parent, rootDocument, chunkID, length);
break;
default:
result = new UnknownChunk(reader, parent, rootDocument, chunkID, length);
break;
}
return(result);
}
