public Icon (Stream stream, int width, int height)
{
- //read the icon header
- if (stream == null || stream.Length == 0)
- throw new System.ArgumentException ("The argument 'stream' must be a picture that can be used as a Icon", "stream");
-
- BinaryReader reader = new BinaryReader (stream);
-
- //iconDir = new IconDir ();
- iconDir.idReserved = reader.ReadUInt16();
- if (iconDir.idReserved != 0) //must be 0
- throw new System.ArgumentException ("Invalid Argument", "stream");
-
- iconDir.idType = reader.ReadUInt16();
- if (iconDir.idType != 1) //must be 1
- throw new System.ArgumentException ("Invalid Argument", "stream");
-
- ushort dirEntryCount = reader.ReadUInt16();
- iconDir.idCount = dirEntryCount;
- iconDir.idEntries = new IconDirEntry [dirEntryCount];
- imageData = new IconImage [dirEntryCount];
- bool sizeObtained = false;
- //now read in the IconDirEntry structures
- for (int i=0; i<dirEntryCount; i++){
- IconDirEntry ide;
- ide.width = reader.ReadByte ();
- ide.height = reader.ReadByte ();
- ide.colorCount = reader.ReadByte ();
- ide.reserved = reader.ReadByte ();
- ide.planes = reader.ReadUInt16 ();
- ide.bitCount = reader.ReadUInt16 ();
- ide.bytesInRes = reader.ReadUInt32 ();
- ide.imageOffset = reader.ReadUInt32 ();
- iconDir.idEntries [i] = ide;
- //is this is the best fit??
- if (!sizeObtained)
- if (ide.height==height && ide.width==width) {
- this.id = (ushort) i;
- sizeObtained = true;
- this.iconSize.Height = ide.height;
- this.iconSize.Width = ide.width;
- }
- }
- //if we havent found the best match, return the one with the
- //largest size. Is this approach correct??
- if (!sizeObtained){
- uint largestSize = 0;
- for (int j=0; j<dirEntryCount; j++){
- if (iconDir.idEntries [j].bytesInRes >= largestSize) {
- largestSize = iconDir.idEntries [j].bytesInRes;
- this.id = (ushort) j;
- this.iconSize.Height = iconDir.idEntries [j].height;
- this.iconSize.Width = iconDir.idEntries [j].width;
- }
- }
- }
-
- //now read in the icon data
- for (int j = 0; j<dirEntryCount; j++)
- {
- IconImage iidata = new IconImage();
- BitmapInfoHeader bih = new BitmapInfoHeader();
- stream.Seek (iconDir.idEntries [j].imageOffset, SeekOrigin.Begin);
- byte [] buffer = new byte [iconDir.idEntries [j].bytesInRes];
- stream.Read (buffer, 0, buffer.Length);
- BinaryReader bihReader = new BinaryReader (new MemoryStream(buffer));
- bih.biSize = bihReader.ReadUInt32 ();
- bih.biWidth = bihReader.ReadInt32 ();
- bih.biHeight = bihReader.ReadInt32 ();
- bih.biPlanes = bihReader.ReadUInt16 ();
- bih.biBitCount = bihReader.ReadUInt16 ();
- bih.biCompression = bihReader.ReadUInt32 ();
- bih.biSizeImage = bihReader.ReadUInt32 ();
- bih.biXPelsPerMeter = bihReader.ReadInt32 ();
- bih.biYPelsPerMeter = bihReader.ReadInt32 ();
- bih.biClrUsed = bihReader.ReadUInt32 ();
- bih.biClrImportant = bihReader.ReadUInt32 ();
-
- iidata.iconHeader = bih;
- //Read the number of colors used and corresponding memory occupied by
- //color table. Fill this memory chunk into rgbquad[]
- int numColors;
- switch (bih.biBitCount){
- case 1: numColors = 2;
- break;
- case 4: numColors = 16;
- break;
- case 8: numColors = 256;
- break;
- default: numColors = 0;
- break;
- }
-
- iidata.iconColors = new uint [numColors];
- for (int i=0; i<numColors; i++)
- iidata.iconColors [i] = bihReader.ReadUInt32 ();
-
- //XOR mask is immediately after ColorTable and its size is
- //icon height* no. of bytes per line
-
- //icon height is half of BITMAPINFOHEADER.biHeight, since it contains
- //both XOR as well as AND mask bytes
- int iconHeight = bih.biHeight/2;
-
- //bytes per line should should be uint aligned
- int numBytesPerLine = ((((bih.biWidth * bih.biPlanes * bih.biBitCount)+ 31)>>5)<<2);
-
- //Determine the XOR array Size
- int xorSize = numBytesPerLine * iconHeight;
- iidata.iconXOR = new byte [xorSize];
- for (int i=0; i<xorSize; i++)
- iidata.iconXOR[i] = bihReader.ReadByte();
-
- //Determine the AND array size
- //For this i subtract the current position from the length.
- //ugly hack...
- int andSize = (int) (bihReader.BaseStream.Length - bihReader.BaseStream.Position);
- iidata.iconAND = new byte [andSize];
- for (int i=0; i<andSize; i++)
- iidata.iconAND[i] = bihReader.ReadByte();
-
- imageData [j] = iidata;
- bihReader.Close();
- }
-
- reader.Close();
+ InitFromStreamWithSize (stream, width, height);
}
public Icon (string fileName) : this (new FileStream (fileName, FileMode.Open))
throw new NotImplementedException ();
}
- [MonoTODO ("Implement")]
private Icon (SerializationInfo info, StreamingContext context)
{
- //FIXME, need to check how MS stores Icon structure
- //Will serialized form help
- throw new NotImplementedException ();
- }
+ MemoryStream dataStream = null;
+ int width=0;
+ int height=0;
+ foreach (SerializationEntry serEnum in info) {
+ if (String.Compare(serEnum.Name, "IconData", true) == 0) {
+ dataStream = new MemoryStream ((byte []) serEnum.Value);
+ }
+ if (String.Compare(serEnum.Name, "IconSize", true) == 0) {
+ Size iconSize = (Size) serEnum.Value;
+ width = iconSize.Width;
+ height = iconSize.Height;
+ }
+ }
+ if (dataStream != null && width != 0 && height != 0) {
+ InitFromStreamWithSize (dataStream, width, height);
+ }
+ }
[MonoTODO ("Implement")]
void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context)
Dispose ();
}
+ private void InitFromStreamWithSize (Stream stream, int width, int height)
+ {
+ //read the icon header
+ if (stream == null || stream.Length == 0)
+ throw new System.ArgumentException ("The argument 'stream' must be a picture that can be used as a Icon", "stream");
+
+ BinaryReader reader = new BinaryReader (stream);
+
+ //iconDir = new IconDir ();
+ iconDir.idReserved = reader.ReadUInt16();
+ if (iconDir.idReserved != 0) //must be 0
+ throw new System.ArgumentException ("Invalid Argument", "stream");
+
+ iconDir.idType = reader.ReadUInt16();
+ if (iconDir.idType != 1) //must be 1
+ throw new System.ArgumentException ("Invalid Argument", "stream");
+
+ ushort dirEntryCount = reader.ReadUInt16();
+ iconDir.idCount = dirEntryCount;
+ iconDir.idEntries = new IconDirEntry [dirEntryCount];
+ imageData = new IconImage [dirEntryCount];
+ bool sizeObtained = false;
+ //now read in the IconDirEntry structures
+ for (int i=0; i<dirEntryCount; i++){
+ IconDirEntry ide;
+ ide.width = reader.ReadByte ();
+ ide.height = reader.ReadByte ();
+ ide.colorCount = reader.ReadByte ();
+ ide.reserved = reader.ReadByte ();
+ ide.planes = reader.ReadUInt16 ();
+ ide.bitCount = reader.ReadUInt16 ();
+ ide.bytesInRes = reader.ReadUInt32 ();
+ ide.imageOffset = reader.ReadUInt32 ();
+ iconDir.idEntries [i] = ide;
+ //is this is the best fit??
+ if (!sizeObtained)
+ if (ide.height==height && ide.width==width) {
+ this.id = (ushort) i;
+ sizeObtained = true;
+ this.iconSize.Height = ide.height;
+ this.iconSize.Width = ide.width;
+ }
+ }
+ //if we havent found the best match, return the one with the
+ //largest size. Is this approach correct??
+ if (!sizeObtained){
+ uint largestSize = 0;
+ for (int j=0; j<dirEntryCount; j++){
+ if (iconDir.idEntries [j].bytesInRes >= largestSize) {
+ largestSize = iconDir.idEntries [j].bytesInRes;
+ this.id = (ushort) j;
+ this.iconSize.Height = iconDir.idEntries [j].height;
+ this.iconSize.Width = iconDir.idEntries [j].width;
+ }
+ }
+ }
+
+ //now read in the icon data
+ for (int j = 0; j<dirEntryCount; j++)
+ {
+ IconImage iidata = new IconImage();
+ BitmapInfoHeader bih = new BitmapInfoHeader();
+ stream.Seek (iconDir.idEntries [j].imageOffset, SeekOrigin.Begin);
+ byte [] buffer = new byte [iconDir.idEntries [j].bytesInRes];
+ stream.Read (buffer, 0, buffer.Length);
+ BinaryReader bihReader = new BinaryReader (new MemoryStream(buffer));
+ bih.biSize = bihReader.ReadUInt32 ();
+ bih.biWidth = bihReader.ReadInt32 ();
+ bih.biHeight = bihReader.ReadInt32 ();
+ bih.biPlanes = bihReader.ReadUInt16 ();
+ bih.biBitCount = bihReader.ReadUInt16 ();
+ bih.biCompression = bihReader.ReadUInt32 ();
+ bih.biSizeImage = bihReader.ReadUInt32 ();
+ bih.biXPelsPerMeter = bihReader.ReadInt32 ();
+ bih.biYPelsPerMeter = bihReader.ReadInt32 ();
+ bih.biClrUsed = bihReader.ReadUInt32 ();
+ bih.biClrImportant = bihReader.ReadUInt32 ();
+
+ iidata.iconHeader = bih;
+ //Read the number of colors used and corresponding memory occupied by
+ //color table. Fill this memory chunk into rgbquad[]
+ int numColors;
+ switch (bih.biBitCount){
+ case 1: numColors = 2;
+ break;
+ case 4: numColors = 16;
+ break;
+ case 8: numColors = 256;
+ break;
+ default: numColors = 0;
+ break;
+ }
+
+ iidata.iconColors = new uint [numColors];
+ for (int i=0; i<numColors; i++)
+ iidata.iconColors [i] = bihReader.ReadUInt32 ();
+
+ //XOR mask is immediately after ColorTable and its size is
+ //icon height* no. of bytes per line
+
+ //icon height is half of BITMAPINFOHEADER.biHeight, since it contains
+ //both XOR as well as AND mask bytes
+ int iconHeight = bih.biHeight/2;
+
+ //bytes per line should should be uint aligned
+ int numBytesPerLine = ((((bih.biWidth * bih.biPlanes * bih.biBitCount)+ 31)>>5)<<2);
+
+ //Determine the XOR array Size
+ int xorSize = numBytesPerLine * iconHeight;
+ iidata.iconXOR = new byte [xorSize];
+ for (int i=0; i<xorSize; i++)
+ iidata.iconXOR[i] = bihReader.ReadByte();
+
+ //Determine the AND array size
+ //For this i subtract the current position from the length.
+ //ugly hack...
+ int andSize = (int) (bihReader.BaseStream.Length - bihReader.BaseStream.Position);
+ iidata.iconAND = new byte [andSize];
+ for (int i=0; i<andSize; i++)
+ iidata.iconAND[i] = bihReader.ReadByte();
+
+ imageData [j] = iidata;
+ bihReader.Close();
+ }
+
+ reader.Close();
+ }
}
}
projects / mono.git / commitdiff