public byte [,] GetBitmapImage(Table_EBLC.bitmapSizeTable bst, ushort glyphID)
{
byte [,] bits = null;
Table_EBLC.indexSubTableArray ista = bst.FindIndexSubTableArray(glyphID);
if (ista != null)
{
Table_EBLC.indexSubTable ist = bst.GetIndexSubTable(ista);
if (ist.header.imageFormat < 8)
{
// simple bitmap
byte [] encodedDataBuf = GetImageData(ist, glyphID, ista.firstGlyphIndex);
byte width=0, height=0;
switch (ist.header.imageFormat)
{
case 0:
throw new ApplicationException("illegal image format: 0");
//break;
case 1:
case 2:
smallGlyphMetrics sgm = this.GetSmallMetrics(ist, glyphID, ista.firstGlyphIndex);
width = sgm.width;
height = sgm.height;
break;
case 3:
case 4:
throw new ApplicationException("illegal image format: " + ist.header.imageFormat);
//break;
case 5:
switch (ist.header.indexFormat)
{
case 2:
Table_EBLC.indexSubTable2 ist2 = (Table_EBLC.indexSubTable2)ist;
width = ist2.bigMetrics.width;
height = ist2.bigMetrics.height;
break;
case 5:
Table_EBLC.indexSubTable5 ist5 = (Table_EBLC.indexSubTable5)ist;
width = ist5.bigMetrics.width;
height = ist5.bigMetrics.height;
break;
}
break;
case 6:
case 7:
bigGlyphMetrics bgm = this.GetBigMetrics(ist, glyphID, ista.firstGlyphIndex);
width = bgm.width;
height = bgm.height;
break;
}
if (encodedDataBuf != null)
{
bits = DecodeImageData(ist, width, height, bst.bitDepth, encodedDataBuf);
}
else
{
//Debug.Assert(false);
}
}
else if (ist.header.imageFormat <10)
{
// composite bitmap
throw new ApplicationException("TODO: impelement bitmap composites");
}
else
{
Debug.Assert(false, "illegal image format");
}
}
return bits;
}
private uint getImageFormatOffset( Table_EBLC.indexSubTable cIndexSubTable, uint nGlyphIndex, uint nStartGlyphIndex )
{
int nIndexFormat = cIndexSubTable.header.indexFormat;
uint nGlyphImageDataOffset = 0;
switch( nIndexFormat )
{
case 1:
{
nGlyphImageDataOffset = cIndexSubTable.header.imageDataOffset + ((Table_EBLC.indexSubTable1)cIndexSubTable).GetOffset( (uint)(nGlyphIndex - nStartGlyphIndex));
break;
}
case 2:
{
nGlyphImageDataOffset = cIndexSubTable.header.imageDataOffset + 4 + bigGlyphMetrics.bufSize;
nGlyphImageDataOffset += (uint)(((Table_EBLC.indexSubTable2)cIndexSubTable).imageSize * (nGlyphIndex - nStartGlyphIndex));
break;
}
case 3:
{
nGlyphImageDataOffset = cIndexSubTable.header.imageDataOffset + ((Table_EBLC.indexSubTable3)cIndexSubTable).GetOffset( (uint)(nGlyphIndex - nStartGlyphIndex));
break;
}
case 4:
{
Table_EBLC.indexSubTable4 ist = (Table_EBLC.indexSubTable4)cIndexSubTable;
for( uint i = 0; i < ist.numGlyphs; i++ )
{
if( ist.GetCodeOffsetPair( i ).glyphCode == nGlyphIndex )
{
nGlyphImageDataOffset = ist.header.imageDataOffset + ist.GetCodeOffsetPair( i ).offset;
break;
}
}
break;
}
case 5:
{
for( uint i = 0; i < ((Table_EBLC.indexSubTable5)cIndexSubTable).numGlyphs; i++ )
{
if( ((Table_EBLC.indexSubTable5)cIndexSubTable).GetGlyphCode( i ) == nGlyphIndex )
{
nGlyphImageDataOffset = cIndexSubTable.header.imageDataOffset + 4 + bigGlyphMetrics.bufSize + 4;
nGlyphImageDataOffset += (uint)(((Table_EBLC.indexSubTable5)cIndexSubTable).numGlyphs * 2);
nGlyphImageDataOffset += (uint)(i * ((Table_EBLC.indexSubTable5)cIndexSubTable).imageSize);
break;
}
}
break;
}
}
return nGlyphImageDataOffset;
}
public uint getImageLength( Table_EBLC.indexSubTable cIndexSubTable, uint nGlyphIndex, uint nStartGlyphIndex, uint nImageOffset )
{
int nIndexFormat = cIndexSubTable.header.indexFormat;
uint nImageLength = 0;
switch( nIndexFormat )
{
case 1:
{
nImageLength = cIndexSubTable.header.imageDataOffset + ((Table_EBLC.indexSubTable1)cIndexSubTable).GetOffset( (uint)((nGlyphIndex + 1) - nStartGlyphIndex));
nImageLength -= nImageOffset;
break;
}
case 2:
{
nImageLength = ((Table_EBLC.indexSubTable2)cIndexSubTable).imageSize;
break;
}
case 3:
{
nImageLength = cIndexSubTable.header.imageDataOffset + ((Table_EBLC.indexSubTable3)cIndexSubTable).GetOffset( (uint)((nGlyphIndex + 1) - nStartGlyphIndex));
nImageLength -= nImageOffset;
break;
}
case 4:
{
Table_EBLC.indexSubTable4 ist = (Table_EBLC.indexSubTable4)cIndexSubTable;
for( uint i = 0; i < ist.numGlyphs; i++ )
{
if( ist.GetCodeOffsetPair( i ).glyphCode == nGlyphIndex )
{
nImageLength = ist.header.imageDataOffset + ist.GetCodeOffsetPair( i + 1 ).offset;
nImageLength -= nImageOffset;
}
}
break;
}
case 5:
{
nImageLength = ((Table_EBLC.indexSubTable5)cIndexSubTable).imageSize;
break;
}
}
return nImageLength;
}
public ebdtComponent GetComponent( Table_EBLC.indexSubTable cIndexSubTable, uint nGlyphIndex, uint nStartGlyphIndex, uint nComponent )
{
ebdtComponent ebdtc = null;
int nIndexFormat = cIndexSubTable.header.indexFormat;
int nImageFormat = cIndexSubTable.header.imageFormat;
Debug.Assert( nIndexFormat != 2 && nIndexFormat != 5 );
// These images all have the same metrics as described in the indexSubTable so should have the proper image format
Debug.Assert( nIndexFormat != 3 && nIndexFormat != 5 );
if (nImageFormat == 8 || nImageFormat == 9)
{
if( nGlyphIndex >= nStartGlyphIndex )
{
uint nImageFormatOffset = getImageFormatOffset( cIndexSubTable, nGlyphIndex, nStartGlyphIndex );
if( nImageFormatOffset != 0 )
{
ebdtc = new ebdtComponent();
if( nImageFormat == 8 )
{
nImageFormatOffset += smallGlyphMetrics.bufSize + 3 + (nComponent * ebdtComponent.bufSize);
}
else // nImageFormat = 9
{
nImageFormatOffset += smallGlyphMetrics.bufSize + 2 + (nComponent * ebdtComponent.bufSize);
}
ebdtc.glyphCode = m_bufTable.GetUshort( nImageFormatOffset + (uint)ebdtComponent.FieldOffsets.glyphCode );
ebdtc.xOffset = m_bufTable.GetSbyte( nImageFormatOffset + (uint)ebdtComponent.FieldOffsets.xOffset );
ebdtc.yOffset = m_bufTable.GetSbyte( nImageFormatOffset + (uint)ebdtComponent.FieldOffsets.yOffset );
}
}
}
return ebdtc;
}
public byte[] GetImageData( Table_EBLC.indexSubTable cIndexSubTable, uint nGlyphIndex, uint nStartGlyphIndex )
{
int nIndexFormat = cIndexSubTable.header.indexFormat;
int nImageFormat = cIndexSubTable.header.imageFormat;
byte[] bufImageData = null;
// 8 and 9 are composites so their image data should be retrieved through the composite glyphs
Debug.Assert( nImageFormat != 8 && nImageFormat != 9 );
if( nGlyphIndex >= nStartGlyphIndex )
{
uint nImageFormatOffset = getImageFormatOffset( cIndexSubTable, nGlyphIndex, nStartGlyphIndex );
if( nImageFormatOffset > 0 )
{
uint nImageLength = 0;
if( nImageFormat == 1 || nImageFormat == 2 )
{
nImageFormatOffset += smallGlyphMetrics.bufSize;
}
else if( nImageFormat == 5 )
{
}
else if( nImageFormat == 6 || nImageFormat == 7 )
{
nImageFormatOffset += bigGlyphMetrics.bufSize;
}
nImageLength = getImageLength( cIndexSubTable, nGlyphIndex, nStartGlyphIndex, nImageFormatOffset );
if( nImageLength > 0 )
{
bufImageData = new byte[nImageLength];
System.Buffer.BlockCopy( m_bufTable.GetBuffer(), (int)nImageFormatOffset, bufImageData, 0, (int)nImageLength );
}
}
}
return bufImageData;
}
public bool Validate_Format5(Validator v, string sIdentity, Table_EBLC.indexSubTable ist)
{
bool bOk = true;
Table_EBLC.indexSubTableArray ista = ist.GetIndexSubTableArray();
for (ushort idGlyph=ista.firstGlyphIndex; idGlyph <= ista.lastGlyphIndex; idGlyph++)
{
// no metrics in format 5
// validate image data
// - this is just bitmap data, any values should be valid
}
return bOk;
}
public ushort GetNumComponents( Table_EBLC.indexSubTable cIndexSubTable, uint nGlyphIndex, uint nStartGlyphIndex )
{
ushort nNumComponents = 0;
int nIndexFormat = cIndexSubTable.header.indexFormat;
int nImageFormat = cIndexSubTable.header.imageFormat;
Debug.Assert(nImageFormat == 8 || nImageFormat == 9);
// These images all have the same metrics as described in the indexSubTable so should have the proper image format
// Debug.Assert( nIndexFormat != 2 && nIndexFormat != 5 );
// commented out the above assert because batang.ttc violates this too much
if (nImageFormat == 8 || nImageFormat == 9)
{
if( nGlyphIndex >= nStartGlyphIndex )
{
uint nImageFormatOffset = getImageFormatOffset( cIndexSubTable, nGlyphIndex, nStartGlyphIndex );
if( nImageFormatOffset != 0 )
{
if( nImageFormat == 8 )
{
nNumComponents = m_bufTable.GetUshort( (uint)(nImageFormatOffset + smallGlyphMetrics.bufSize + 1));
}
else // nImageFormat = 9
{
nNumComponents = m_bufTable.GetUshort( (uint)(nImageFormatOffset + bigGlyphMetrics.bufSize));
}
}
}
}
return nNumComponents;
}
public override OTTable GenerateTable()
{
uint nBufSize = (uint)Table_EBLC.FieldOffsets.FirstbitmapSizeTable;
for( ushort i = 0; i < m_numSizes; i++ )
{
bitmapSizeTableCache bstc = (bitmapSizeTableCache)m_bitmapSizeTables[i];
nBufSize += bitmapSizeTable.bufSize;
nBufSize += bstc.indexSubTablesSize;
}
// create a Motorola Byte Order buffer for the new table
MBOBuffer newbuf = new MBOBuffer( nBufSize );
// Determine the size of the EBDTTable and create its buffer
uint nEBDTBufSize = (uint)Table_EBDT.FieldOffsets.StartOfData;
for( ushort i = 0; i < m_numSizes; i++ )
{
bitmapSizeTableCache bstc = (bitmapSizeTableCache)m_bitmapSizeTables[i];
for( int ii = 0; ii < bstc.numberOfIndexSubTables; ii++ )
{
indexSubTableArrayCache istac = bstc.getIndexSubTableArrayCache( ii );
nEBDTBufSize += istac.indexSubTable.imageDataSize();
}
}
// create a Motorola Byte Order buffer for the EBDT table
MBOBuffer bufEBDT = new MBOBuffer( nEBDTBufSize );
newbuf.SetFixed( m_version, (uint)Table_EBLC.FieldOffsets.version );
newbuf.SetUint( m_numSizes, (uint)Table_EBLC.FieldOffsets.numSizes );
//Set up initial offsets
uint idxArrOffset = (uint)Table_EBLC.FieldOffsets.FirstbitmapSizeTable + (bitmapSizeTable.bufSize * m_numSizes);
uint imageDataOffset = (uint)Table_EBDT.FieldOffsets.StartOfData; //EBDTTable
for( ushort i = 0; i < m_numSizes; i++ )
{
bitmapSizeTableCache bstc = (bitmapSizeTableCache)m_bitmapSizeTables[i];
//Set the offset to the bitmapSizeTable
uint bstOffset = (uint)(Table_EBLC.FieldOffsets.FirstbitmapSizeTable + (i * bitmapSizeTable.bufSize));
newbuf.SetUint( idxArrOffset, bstOffset );
newbuf.SetUint( bstc.indexSubTablesSize, bstOffset + (uint)bitmapSizeTable.FieldOffsets.indexTablesSize );
newbuf.SetUint( bstc.numberOfIndexSubTables, bstOffset + (uint)bitmapSizeTable.FieldOffsets.numberOfIndexSubTables );
newbuf.SetUint( bstc.colorRef, bstOffset + (uint)bitmapSizeTable.FieldOffsets.colorRef );
// hori
newbuf.SetSbyte( bstc.hori.ascender, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.ascender );
newbuf.SetSbyte( bstc.hori.descender, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.descender );
newbuf.SetByte( bstc.hori.widthMax, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.widthMax );
newbuf.SetSbyte( bstc.hori.caretSlopeNumerator, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.caretSlopeNumerator );
newbuf.SetSbyte( bstc.hori.caretSlopeDenominator, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.caretSlopeDenominator );
newbuf.SetSbyte( bstc.hori.caretOffset, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.caretOffset );
newbuf.SetSbyte( bstc.hori.minOriginSB, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.minOriginSB );
newbuf.SetSbyte( bstc.hori.minAdvanceSB, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.minAdvanceSB );
newbuf.SetSbyte( bstc.hori.maxBeforeBL, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.maxBeforeBL );
newbuf.SetSbyte( bstc.hori.minAfterBL, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.minAfterBL );
newbuf.SetSbyte( bstc.hori.pad1, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.pad1 );
newbuf.SetSbyte( bstc.hori.pad2, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.pad2 );
//vert
newbuf.SetSbyte( bstc.vert.ascender, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.ascender );
newbuf.SetSbyte( bstc.vert.descender, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.descender );
newbuf.SetByte( bstc.vert.widthMax, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.widthMax );
newbuf.SetSbyte( bstc.vert.caretSlopeNumerator, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.caretSlopeNumerator );
newbuf.SetSbyte( bstc.vert.caretSlopeDenominator, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.caretSlopeDenominator );
newbuf.SetSbyte( bstc.vert.caretOffset, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.caretOffset );
newbuf.SetSbyte( bstc.vert.minOriginSB, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.minOriginSB );
newbuf.SetSbyte( bstc.vert.minAdvanceSB, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.minAdvanceSB );
newbuf.SetSbyte( bstc.vert.maxBeforeBL, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.maxBeforeBL );
newbuf.SetSbyte( bstc.vert.minAfterBL, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.minAfterBL );
newbuf.SetSbyte( bstc.vert.pad1, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.pad1 );
newbuf.SetSbyte( bstc.vert.pad2, bstOffset + (uint)bitmapSizeTable.FieldOffsets.hori + (uint)sbitLineMetrics.FieldOffsets.pad2 );
newbuf.SetUshort( bstc.startGlyphIndex, bstOffset + (uint)bitmapSizeTable.FieldOffsets.startGlyphIndex );
newbuf.SetUshort( bstc.endGlyphIndex, bstOffset + (uint)bitmapSizeTable.FieldOffsets.endGlyphIndex );
newbuf.SetByte( bstc.ppemX, bstOffset + (uint)bitmapSizeTable.FieldOffsets.ppemX );
newbuf.SetByte( bstc.ppemY, bstOffset + (uint)bitmapSizeTable.FieldOffsets.ppemY );
newbuf.SetByte( bstc.bitDepth, bstOffset + (uint)bitmapSizeTable.FieldOffsets.bitDepth );
newbuf.SetSbyte( bstc.flags, bstOffset + (uint)bitmapSizeTable.FieldOffsets.flags );
uint idxSubTableOffset = idxArrOffset + (bstc.numberOfIndexSubTables * indexSubTableArray.bufSize);
// Write this bitmapSizeTable indexSubTableArray and indexSubTable
for( int ii = 0; ii < bstc.numberOfIndexSubTables; ii++ )
{
// Write out the indexSubTableArray
indexSubTableArrayCache istac = bstc.getIndexSubTableArrayCache( ii );
newbuf.SetUshort( istac.firstGlyphIndex, idxArrOffset + (uint)indexSubTableArray.FieldOffsets.firstGlyphIndex + (uint)(ii * indexSubTableArray.bufSize));
newbuf.SetUshort( istac.lastGlyphIndex, idxArrOffset + (uint)indexSubTableArray.FieldOffsets.lastGlyphIndex + (uint)(ii * indexSubTableArray.bufSize));
newbuf.SetUint( (idxSubTableOffset - idxArrOffset), idxArrOffset + (uint)indexSubTableArray.FieldOffsets.additionalOffsetToIndexSubtable + (uint)(ii * indexSubTableArray.bufSize));
// Write out the indexSubTable, The header is the same for all indexFormats
newbuf.SetUshort( istac.indexSubTable.indexFormat, idxSubTableOffset + (uint)indexSubHeader.FieldOffsets.indexFormat );
newbuf.SetUshort( istac.indexSubTable.imageFormat, idxSubTableOffset + (uint)indexSubHeader.FieldOffsets.imageFormat );
newbuf.SetUint( imageDataOffset, idxSubTableOffset + (uint)indexSubHeader.FieldOffsets.imageDataOffset );
uint imageOffset = 0;
switch( istac.indexSubTable.indexFormat )
{
case 1:
{
indexSubTableCache1 istc = (indexSubTableCache1)istac.indexSubTable;
for( ushort iii = istac.firstGlyphIndex; iii <= istac.lastGlyphIndex; iii++ )
{
ushort nIndex = (ushort)(iii - istac.firstGlyphIndex);
// offset + header length + (uint)offsetArray[iii]
newbuf.SetUint( imageOffset, idxSubTableOffset + indexSubTable.headerLength + (uint)(nIndex * 4));
// Write image data for this indexSubTable to EBDT buffer
imageCache ic = istc.getImageCache( iii, istac.firstGlyphIndex );
writeEBDTBuffer( bufEBDT, (imageDataOffset + imageOffset), ic, istac.indexSubTable.imageFormat );
imageOffset += ic.imageDataSize();
}
// Add the last one so size can be determined
newbuf.SetUint( imageOffset, idxSubTableOffset + indexSubTable.headerLength + ((uint)(istac.lastGlyphIndex - istac.firstGlyphIndex + 1) * 4));
break;
}
case 2:
{
indexSubTableCache2 istc = (indexSubTableCache2)istac.indexSubTable;
// offset + header length
newbuf.SetUint( istc.imageSize, idxSubTableOffset + indexSubTable.headerLength );
//BigMetrics, + 12 = indexSubTable.headerLength + (uint)imageSize
newbuf.SetByte( istc.bigMetrics.height, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.height );
newbuf.SetByte( istc.bigMetrics.width, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.width );
newbuf.SetSbyte( istc.bigMetrics.horiBearingX, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.horiBearingX );
newbuf.SetSbyte( istc.bigMetrics.horiBearingY, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.horiBearingY );
newbuf.SetByte( istc.bigMetrics.horiAdvance, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.horiAdvance );
newbuf.SetSbyte( istc.bigMetrics.vertBearingX, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.vertBearingX );
newbuf.SetSbyte( istc.bigMetrics.vertBearingY, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.vertBearingY );
newbuf.SetByte( istc.bigMetrics.vertAdvance, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.vertAdvance );
for( ushort iii = istac.firstGlyphIndex; iii <= istac.lastGlyphIndex; iii++ )
{
// Write image data for this indexSubTable to EBDT buffer
imageCache ic = istc.getImageCache( iii, istac.firstGlyphIndex );
writeEBDTBuffer( bufEBDT, (imageDataOffset + imageOffset), ic, istac.indexSubTable.imageFormat );
imageOffset += ic.imageDataSize();
}
break;
}
case 3:
{
indexSubTableCache3 istc = (indexSubTableCache3)istac.indexSubTable;
for( ushort iii = istac.firstGlyphIndex; iii <= istac.lastGlyphIndex; iii++ )
{
ushort nIndex = (ushort)(iii - istac.firstGlyphIndex);
// offset + header length + ushort offsetArray[iii]
newbuf.SetUshort( (ushort)imageOffset, idxSubTableOffset + indexSubTable.headerLength + (uint)(nIndex * 2 ));
// Write image data for this indexSubTable to EBDT buffer
imageCache ic = istc.getImageCache( iii, istac.firstGlyphIndex );
writeEBDTBuffer( bufEBDT, (imageDataOffset + imageOffset), ic, istac.indexSubTable.imageFormat );
imageOffset += ic.imageDataSize();
}
// Add the last one so size can be determined
newbuf.SetUshort( (ushort)imageOffset, idxSubTableOffset + indexSubTable.headerLength + ((uint)(istac.lastGlyphIndex - istac.firstGlyphIndex + 1) * 2 ));
break;
}
case 4:
{
indexSubTableCache4 istc = (indexSubTableCache4)istac.indexSubTable;
// offset + header length
newbuf.SetUint( istc.numGlyphs, idxSubTableOffset + indexSubTable.headerLength );
for( ushort iii = 0; iii < istc.numGlyphs; iii++ )
{
// offset + header length + (uint)numGlyphs + (4)codeOffsetPair[iii]
newbuf.SetUshort( istc.getGlyphCode(iii), idxSubTableOffset + 12 + (uint)(iii * 4));
newbuf.SetUshort( (ushort)imageOffset, idxSubTableOffset + 12 + (uint)(iii * 4) + 2 );
// Write image data for this indexSubTable to EBDT buffer
imageCache ic = istc.getImageCache( istc.getGlyphCode(iii));
writeEBDTBuffer( bufEBDT, (imageDataOffset + imageOffset), ic, istac.indexSubTable.imageFormat );
imageOffset += ic.imageDataSize();
}
// Add the last codeOffsetPair so size can be determined
newbuf.SetUshort( 0, idxSubTableOffset + 12 + (uint)(istc.numGlyphs * 4 ));
newbuf.SetUshort( (ushort)imageOffset, idxSubTableOffset + 12 + (uint)(istc.numGlyphs * 4 ) + 2 );
break;
}
case 5:
{
indexSubTableCache5 istc = (indexSubTableCache5)istac.indexSubTable;
// offset + header length
newbuf.SetUint( istc.imageSize, idxSubTableOffset + indexSubTable.headerLength );
//BigMetrics, + 12 = indexSubTable.headerLength + (uint)imageSize
newbuf.SetByte( istc.bigMetrics.height, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.height );
newbuf.SetByte( istc.bigMetrics.width, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.width );
newbuf.SetSbyte( istc.bigMetrics.horiBearingX, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.horiBearingX );
newbuf.SetSbyte( istc.bigMetrics.horiBearingY, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.horiBearingY );
newbuf.SetByte( istc.bigMetrics.horiAdvance, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.horiAdvance );
newbuf.SetSbyte( istc.bigMetrics.vertBearingX, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.vertBearingX );
newbuf.SetSbyte( istc.bigMetrics.vertBearingY, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.vertBearingY );
newbuf.SetByte( istc.bigMetrics.vertAdvance, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.FieldOffsets.vertAdvance );
newbuf.SetUint( istc.numGlyphs, idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.bufSize );
for( ushort iii = 0; iii < istc.numGlyphs; iii++ )
{
// offset + header length + (uint)imageSize + bigGlyphMetrics.bufSize + big(uint)numGlyphs + (ushort)glyphCodeArray[iii}
newbuf.SetUshort( istc.getGlyphCode(iii), idxSubTableOffset + 12 + (uint)Table_EBDT.bigGlyphMetrics.bufSize + 4 + (uint)(iii * 2 ));
// Write image data for this indexSubTable to EBDT buffer
imageCache ic = istc.getImageCache( istc.getGlyphCode(iii));
writeEBDTBuffer( bufEBDT, (imageDataOffset + imageOffset), ic, istac.indexSubTable.imageFormat );
imageOffset += ic.imageDataSize();
}
break;
}
}
// update imageDataOffset for the next SubTable
imageDataOffset += imageOffset;
// This will take care of any byte boundaries pads required by some indexSubTables
idxSubTableOffset += istac.indexSubTable.indexSubTableSize();
}
idxArrOffset += bstc.indexSubTablesSize;
}
// Put the EBDT buf to that table
Table_EBDT.EBDT_cache EBDTCache = (Table_EBDT.EBDT_cache)m_tableEBDT.GetCache();
EBDTCache.setCache( bufEBDT );
// put the buffer into a Table_EBLC object and return it
Table_EBLC EBLCTable = new Table_EBLC( "EBLC", newbuf );
return EBLCTable;
}
public smallGlyphMetrics GetSmallMetrics( Table_EBLC.indexSubTable cIndexSubTable, uint nGlyphIndex, uint nStartGlyphIndex )
{
smallGlyphMetrics sgm = null;
int nIndexFormat = cIndexSubTable.header.indexFormat;
int nImageFormat = cIndexSubTable.header.imageFormat;
Debug.Assert( nImageFormat == 1 || nImageFormat == 2 || nImageFormat == 8);
// These images all have the same metrics as described in the indexSubTable so should have the proper image format
// Debug.Assert( nIndexFormat != 2 && nIndexFormat != 5 );
// commented out the above assert because batang.ttc violates this too much
if (nImageFormat == 1 || nImageFormat == 2 || nImageFormat == 8)
{
if( nGlyphIndex >= nStartGlyphIndex )
{
//EBDT table starts off with a version data so it would never be possible for this to be set to 0
uint nImageFormatOffset = getImageFormatOffset( cIndexSubTable, nGlyphIndex, nStartGlyphIndex );
if( nImageFormatOffset != 0 )
{
// All of the supported image formats start with this data first
sgm = new smallGlyphMetrics();
sgm.height = m_bufTable.GetByte( nImageFormatOffset + (uint)smallGlyphMetrics.FieldOffsets.height );
sgm.width = m_bufTable.GetByte( nImageFormatOffset + (uint)smallGlyphMetrics.FieldOffsets.width );
sgm.BearingX = m_bufTable.GetSbyte( nImageFormatOffset + (uint)smallGlyphMetrics.FieldOffsets.BearingX );
sgm.BearingY = m_bufTable.GetSbyte( nImageFormatOffset + (uint)smallGlyphMetrics.FieldOffsets.BearingY );
sgm.Advance = m_bufTable.GetByte( nImageFormatOffset + (uint)smallGlyphMetrics.FieldOffsets.Advance );
}
}
}
return sgm;
}
private indexSubTableCache getEBLCIndexSubTable( Table_EBLC OwnerTable, bitmapSizeTable bst, indexSubTableArray ista )
{
indexSubTable ist = bst.GetIndexSubTable(ista);
Table_EBDT tableEDBT = OwnerTable.getTableEDBT();
indexSubTableCache istc = null;
switch( ist.header.indexFormat )
{
case 1:
{
ArrayList cImageCache = new ArrayList();
for( uint i = ista.firstGlyphIndex; i <= ista.lastGlyphIndex; i++ )
{
cImageCache.Add( getEBDTImageFormat( tableEDBT, ist, i, ista.firstGlyphIndex ));
}
istc = new indexSubTableCache1( ist.header.indexFormat, ist.header.imageFormat, cImageCache );
break;
}
case 2:
{
ArrayList cImageCache = new ArrayList();
for( uint i = ista.firstGlyphIndex; i <= ista.lastGlyphIndex; i++ )
{
cImageCache.Add( getEBDTImageFormat( tableEDBT, ist, i, ista.firstGlyphIndex ));
}
uint nImageSize = ((indexSubTable2)ist).imageSize;
Table_EBDT.bigGlyphMetrics bgm = ((indexSubTable2)ist).bigMetrics;
istc = new indexSubTableCache2( ist.header.indexFormat, ist.header.imageFormat, cImageCache, nImageSize, bgm );
break;
}
case 3:
{
ArrayList cImageCache = new ArrayList();
for( uint i = ista.firstGlyphIndex; i <= ista.lastGlyphIndex; i++ )
{
cImageCache.Add( getEBDTImageFormat( tableEDBT, ist, i, ista.firstGlyphIndex ));
}
istc = new indexSubTableCache3( ist.header.indexFormat, ist.header.imageFormat, cImageCache );
break;
}
case 4:
{
ArrayList cImageCache = new ArrayList();
ArrayList cGlyphCodes = new ArrayList();
for( uint i = 0; i < ((indexSubTable4)ist).numGlyphs; i++ )
{
ushort nGlyphCode = ((indexSubTable4)ist).GetCodeOffsetPair( i ).glyphCode;
cGlyphCodes.Add( nGlyphCode );
cImageCache.Add( getEBDTImageFormat( tableEDBT, ist, nGlyphCode, ista.firstGlyphIndex ));
}
istc = new indexSubTableCache4( ist.header.indexFormat, ist.header.imageFormat, cImageCache, cGlyphCodes );
break;
}
case 5:
{
ArrayList cImageCache = new ArrayList();
uint nImageSize = ((indexSubTable5)ist).imageSize;
Table_EBDT.bigGlyphMetrics bgm = ((indexSubTable5)ist).bigMetrics;
ArrayList cGlyphCodes = new ArrayList();
for( uint i = 0; i < ((indexSubTable5)ist).numGlyphs; i++ )
{
ushort nGlyphCode = ((indexSubTable5)ist).GetGlyphCode( i );
cGlyphCodes.Add( nGlyphCode );
cImageCache.Add( getEBDTImageFormat( tableEDBT, ist, nGlyphCode, ista.firstGlyphIndex ));
}
istc = new indexSubTableCache5( ist.header.indexFormat, ist.header.imageFormat, cImageCache, nImageSize, bgm, cGlyphCodes );
break;
}
default:
{
Debug.Assert( false, "unsupported index format" );
break;
}
}
return istc;
}
// constructor
public EBLC_cache( Table_EBLC OwnerTable )
{
// copy the data from the owner table's MBOBuffer
// and store it in the cache variables
m_version = OwnerTable.version;
m_numSizes = OwnerTable.numSizes;
m_tableEBDT = OwnerTable.getTableEDBT();
m_bitmapSizeTables = new ArrayList( (int)m_numSizes );
for( uint i = 0; i < m_numSizes; i++ )
{
bitmapSizeTable bst = OwnerTable.GetBitmapSizeTable( i );
m_bitmapSizeTables.Add( new bitmapSizeTableCache( OwnerTable, bst ));
}
}
public bitmapSizeTableCache( Table_EBLC OwnerTable, bitmapSizeTable bst )
{
m_numberOfIndexSubTables = bst.numberOfIndexSubTables;
m_indexSubTableArray = new ArrayList( (int)m_numberOfIndexSubTables );
indexSubTableArray[] ista = OwnerTable.GetIndexSubTableArray( bst );
for( int i = 0; i < m_numberOfIndexSubTables; i++ )
{
indexSubTableCache istc = getEBLCIndexSubTable( OwnerTable, bst, ista[i] );
indexSubTableArrayCache istac = new indexSubTableArrayCache( ista[i].firstGlyphIndex, ista[i].lastGlyphIndex, istc );
m_indexSubTableArray.Add( istac );
indexSubTable ic = bst.GetIndexSubTable(ista[i]);
//ista[i].additionalOffsetToIndexSubtable += bst.indexSubTableArrayOffset;
}
m_colorRef = bst.colorRef;
hori = sbitLineMetricsCache.FromSbitLineMetrics(bst.hori);
vert = sbitLineMetricsCache.FromSbitLineMetrics(bst.vert);
m_startGlyphIndex = bst.startGlyphIndex;
m_endGlyphIndex = bst.endGlyphIndex;
ppemX = bst.ppemX;
ppemY = bst.ppemY;
bitDepth = bst.bitDepth;
flags = bst.flags;
}
public bool Validate_Format9(Validator v, string sIdentity, Table_EBLC.indexSubTable ist)
{
bool bOk = true;
Table_EBLC.indexSubTableArray ista = ist.GetIndexSubTableArray();
for (ushort idGlyph=ista.firstGlyphIndex; idGlyph <= ista.lastGlyphIndex; idGlyph++)
{
// validate big metrics
bigGlyphMetrics bgm = GetBigMetrics(ist, idGlyph, ista.firstGlyphIndex);
if (bgm != null)
{
bigGlyphMetrics_val bgm_val = bigGlyphMetrics_val.CreateFromBigGlyphMetrics(bgm);
if (!bgm_val.Validate(v, sIdentity + ", idGlyph=" + idGlyph, this))
{
bOk = false;
}
ushort numComponents = this.GetNumComponents(ist, idGlyph, ista.firstGlyphIndex);
// validate component array
for (uint i=0; i<numComponents; i++)
{
ebdtComponent component = GetComponent(ist, idGlyph, ista.firstGlyphIndex, i);
Debug.Assert(component!= null);
// validate the ebdtComponent
// verify that the component's glyph code is less than maxp numGlyphs
if (component.glyphCode >= m_nCachedMaxpNumGlyphs)
{
string sDetails = sIdentity + ", idGlyph=" + idGlyph +
", component[" + i + "].glyphCode=" + component.glyphCode +
", maxp.numGlyphs = " + m_nCachedMaxpNumGlyphs;
v.Error(T.EBDT_GlyphImageData, E.EBDT_E_GlyphImageData, m_tag, sDetails);
bOk = false;
}
// verify that the component's glyph code isn't 0, which should be reserved as the empty glyph
// (technically, someone could use the empty glyph as a component, but it's more likely to be an error)
if (component.glyphCode == 0)
{
string sDetails = sIdentity + ", idGlyph=" + idGlyph +
", component[" + i + "].glyphCode=" + component.glyphCode;
v.Error(T.EBDT_GlyphImageData, E.EBDT_E_GlyphImageData, m_tag, sDetails);
bOk = false;
}
// verify that the component's glyph code isn't the glyph code of its parent
if (component.glyphCode == idGlyph)
{
string sDetails = sIdentity + ", idGlyph=" + idGlyph +
", component[" + i + "].glyphCode=" + component.glyphCode + " (glyph can't use itself as a component)";
v.Error(T.EBDT_GlyphImageData, E.EBDT_E_GlyphImageData, m_tag, sDetails);
bOk = false;
}
}
}
}
return bOk;
}
public bool Validate_Format7(Validator v, string sIdentity, Table_EBLC.indexSubTable ist)
{
bool bOk = true;
Table_EBLC.indexSubTableArray ista = ist.GetIndexSubTableArray();
for (ushort idGlyph=ista.firstGlyphIndex; idGlyph <= ista.lastGlyphIndex; idGlyph++)
{
// validate big metrics
bigGlyphMetrics bgm = GetBigMetrics(ist, idGlyph, ista.firstGlyphIndex);
if (bgm != null)
{
bigGlyphMetrics_val bgm_val = bigGlyphMetrics_val.CreateFromBigGlyphMetrics(bgm);
if (!bgm_val.Validate(v, sIdentity + ", idGlyph=" + idGlyph, this))
{
bOk = false;
}
// validate image data
// - this is just bitmap data, any values should be valid
}
}
return bOk;
}
protected byte[,] DecodeImageData(Table_EBLC.indexSubTable ist, byte width, byte height, byte bitDepth, byte[] databuf)
{
byte [,] bits = null;
switch (ist.header.imageFormat)
{
case 0:
throw new ApplicationException("illegal image format: 0");
//break;
case 1:
bits = DecodeImageDataFmt16(width, height, bitDepth, databuf);
break;
case 2:
bits = DecodeImageDataFmt257(width, height, bitDepth, databuf);
break;
case 3:
throw new ApplicationException("illegal image format: 3");
//break;
case 4:
throw new ApplicationException("illegal image format: 4");
//break;
case 5:
bits = DecodeImageDataFmt257(width, height, bitDepth, databuf);
break;
case 6:
bits = DecodeImageDataFmt16(width, height, bitDepth, databuf);
break;
case 7:
bits = DecodeImageDataFmt257(width, height, bitDepth, databuf);
break;
default:
break;
}
return bits;
}
public bigGlyphMetrics GetBigMetrics( Table_EBLC.indexSubTable cIndexSubTable, uint nGlyphIndex, uint nStartGlyphIndex )
{
bigGlyphMetrics bgm = null;
int nIndexFormat = cIndexSubTable.header.indexFormat;
int nImageFormat = cIndexSubTable.header.imageFormat;
Debug.Assert(nImageFormat == 6 || nImageFormat == 7 || nImageFormat == 9);
// These images all have the same metrics as described in the indexSubTable so should have the proper image format
//Debug.Assert( nIndexFormat != 2 && nIndexFormat != 5 );
if (nImageFormat == 6 || nImageFormat == 7 || nImageFormat == 9)
{
if( nGlyphIndex >= nStartGlyphIndex )
{
try
{
uint nImageFormatOffset = getImageFormatOffset( cIndexSubTable, nGlyphIndex, nStartGlyphIndex );
if( nImageFormatOffset != 0 && nImageFormatOffset + bigGlyphMetrics.bufSize <= m_bufTable.GetLength())
{
// All of the supported image formats start with this data first
bgm = new bigGlyphMetrics();
bgm.height = m_bufTable.GetByte ( nImageFormatOffset + (uint)bigGlyphMetrics.FieldOffsets.height );
bgm.width = m_bufTable.GetByte ( nImageFormatOffset + (uint)bigGlyphMetrics.FieldOffsets.width );
bgm.horiBearingX = m_bufTable.GetSbyte( nImageFormatOffset + (uint)bigGlyphMetrics.FieldOffsets.horiBearingX );
bgm.horiBearingY = m_bufTable.GetSbyte( nImageFormatOffset + (uint)bigGlyphMetrics.FieldOffsets.horiBearingY );
bgm.horiAdvance = m_bufTable.GetByte ( nImageFormatOffset + (uint)bigGlyphMetrics.FieldOffsets.horiAdvance );
bgm.vertBearingX = m_bufTable.GetSbyte( nImageFormatOffset + (uint)bigGlyphMetrics.FieldOffsets.vertBearingX );
bgm.vertBearingY = m_bufTable.GetSbyte( nImageFormatOffset + (uint)bigGlyphMetrics.FieldOffsets.vertBearingY );
bgm.vertAdvance = m_bufTable.GetByte ( nImageFormatOffset + (uint)bigGlyphMetrics.FieldOffsets.vertAdvance );
}
}
catch(Exception)
{
bgm = null;
}
}
}
return bgm;
}
public virtual OTTable CreateTableObject(OTTag tag, MBOBuffer buf)
{
OTTable table = null;
string sName = GetUnaliasedTableName(tag);
switch (sName)
{
case "BASE": table = new Table_BASE(tag, buf); break;
case "CFF ": table = new Table_CFF(tag, buf); break;
case "cmap": table = new Table_cmap(tag, buf); break;
case "cvt ": table = new Table_cvt(tag, buf); break;
case "DSIG": table = new Table_DSIG(tag, buf); break;
case "EBDT": table = new Table_EBDT(tag, buf); break;
case "EBLC": table = new Table_EBLC(tag, buf); break;
case "EBSC": table = new Table_EBSC(tag, buf); break;
case "fpgm": table = new Table_fpgm(tag, buf); break;
case "gasp": table = new Table_gasp(tag, buf); break;
case "GDEF": table = new Table_GDEF(tag, buf); break;
case "glyf": table = new Table_glyf(tag, buf); break;
case "GPOS": table = new Table_GPOS(tag, buf); break;
case "GSUB": table = new Table_GSUB(tag, buf); break;
case "hdmx": table = new Table_hdmx(tag, buf); break;
case "head": table = new Table_head(tag, buf); break;
case "hhea": table = new Table_hhea(tag, buf); break;
case "hmtx": table = new Table_hmtx(tag, buf); break;
case "JSTF": table = new Table_JSTF(tag, buf); break;
case "kern": table = new Table_kern(tag, buf); break;
case "loca": table = new Table_loca(tag, buf); break;
case "LTSH": table = new Table_LTSH(tag, buf); break;
case "maxp": table = new Table_maxp(tag, buf); break;
case "name": table = new Table_name(tag, buf); break;
case "OS/2": table = new Table_OS2(tag, buf); break;
case "PCLT": table = new Table_PCLT(tag, buf); break;
case "post": table = new Table_post(tag, buf); break;
case "prep": table = new Table_prep(tag, buf); break;
case "VDMX": table = new Table_VDMX(tag, buf); break;
case "vhea": table = new Table_vhea(tag, buf); break;
case "vmtx": table = new Table_vmtx(tag, buf); break;
case "VORG": table = new Table_VORG(tag, buf); break;
//case "Zapf": table = new Table_Zapf(tag, buf); break;
default: table = new Table__Unknown(tag, buf); break;
}
return table;
}
public bool Validate_Format4(Validator v, string sIdentity, Table_EBLC.indexSubTable ist)
{
bool bOk = true;
// this format is not supported!
// - however the image format number is actually stored in the EBLC table
// - and so any errors should get reported there
return bOk;
}