/***************************************************************************

 *

 *   Copyright (C) 1998-2002, International Business Machines

 *   Corporation and others.  All Rights Reserved.

 *

 ************************************************************************/

 #ifndef __FONTOBJECT_H

 #define __FONTOBJECT_H

 #include <stdio.h>

 #include "LETypes.h"

 #ifndef ANY_NUMBER

 #define ANY_NUMBER 1

 #endif

 struct DirectoryEntry

 {

     le_uint32   tag;

     le_uint32   checksum;

     le_uint32   offset;

     le_uint32   length;

 };

 struct SFNTDirectory

 {

     le_uint32       scalerType;

     le_uint16       numTables;

     le_uint16       searchRange;

     le_uint16       entrySelector;

     le_uint16       rangeShift;

     DirectoryEntry  tableDirectory[ANY_NUMBER];

 };

 struct CMAPEncodingSubtableHeader

 {

     le_uint16   platformID;

     le_uint16   platformSpecificID;

     le_uint32   encodingOffset;

 };

 struct CMAPTable

 {

     le_uint16   version;

     le_uint16   numberSubtables;

     CMAPEncodingSubtableHeader encodingSubtableHeaders[ANY_NUMBER];

 };

 struct CMAPEncodingSubtable

 {

     le_uint16   format;

     le_uint16   length;

     le_uint16   language;

 };

 struct CMAPFormat0Encoding : CMAPEncodingSubtable

 {

     le_uint8    glyphIndexArray[256];

 };

 struct CMAPFormat2Subheader

 {

     le_uint16   firstCode;

     le_uint16   entryCount;

     le_int16    idDelta;

     le_uint16   idRangeOffset;

 };

 struct CMAPFormat2Encoding : CMAPEncodingSubtable

 {

     le_uint16  subHeadKeys[256];

     CMAPFormat2Subheader subheaders[ANY_NUMBER];

 };

 struct CMAPFormat4Encoding : CMAPEncodingSubtable

 {

     le_uint16   segCountX2;

     le_uint16   searchRange;

     le_uint16   entrySelector;

     le_uint16   rangeShift;

     le_uint16   endCodes[ANY_NUMBER];

 //  le_uint16   reservedPad;

 //  le_uint16   startCodes[ANY_NUMBER];

 //  le_uint16   idDelta[ANY_NUMBER];

 //  le_uint16   idRangeOffset[ANY_NUMBER];

 //  le_uint16   glyphIndexArray[ANY_NUMBER];

 };

 struct CMAPFormat6Encoding : CMAPEncodingSubtable

 {

     le_uint16   firstCode;

     le_uint16   entryCount;

     le_uint16   glyphIndexArray[ANY_NUMBER];

 };

 typedef le_int32 fixed;

 struct BigDate

 {

     le_uint32 bc;

     le_uint32 ad;

 };

 struct HEADTable

 {

     fixed       version;

     fixed       fontRevision;

     le_uint32   checksumAdjustment;

     le_uint32   magicNumber;

     le_uint16   flags;

     le_uint16   unitsPerEm;

     BigDate     created;

     BigDate     modified;

     le_int16    xMin;

     le_int16    yMin;

     le_int16    xMax;

     le_int16    yMax;

     le_int16    lowestRecPPEM;

     le_int16    fontDirectionHint;

     le_int16    indexToLocFormat;

     le_int16    glyphDataFormat;

 };

 struct MAXPTable

 {

     fixed       version;

     le_uint16   numGlyphs;

     le_uint16   maxPoints;

     le_uint16   maxContours;

     le_uint16   maxComponentPoints;

     le_uint16   maxComponentContours;

     le_uint16   maxZones;

     le_uint16   maxTwilightPoints;

     le_uint16   maxStorage;

     le_uint16   maxFunctionDefs;

     le_uint16   maxInstructionDefs;

     le_uint16   maxStackElements;

     le_uint16   maxSizeOfInstructions;

     le_uint16   maxComponentElements;

     le_uint16   maxComponentDepth;

 };

 struct HHEATable

 {

     fixed       version;

     le_int16    ascent;

     le_int16    descent;

     le_int16    lineGap;

     le_uint16   advanceWidthMax;

     le_int16    minLeftSideBearing;

     le_int16    minRightSideBearing;

     le_int16    xMaxExtent;

     le_int16    caretSlopeRise;

     le_int16    caretSlopeRun;

     le_int16    caretOffset;

     le_int16    reserved1;

     le_int16    reserved2;

     le_int16    reserved3;

     le_int16    reserved4;

     le_int16    metricDataFormat;

     le_uint16   numOfLongHorMetrics;

 };

 struct LongHorMetric

 {

     le_uint16   advanceWidth;

     le_int16    leftSideBearing;

 };

 struct HMTXTable

 {

     LongHorMetric hMetrics[ANY_NUMBER];        // ANY_NUMBER = numOfLongHorMetrics from hhea table

 //  le_int16      leftSideBearing[ANY_NUMBER]; // ANY_NUMBER = numGlyphs - numOfLongHorMetrics

 };

 class FontObject

 {

 public:

     FontObject(char *fontName);

     ~FontObject();

     void *readTable(LETag tag, le_uint32 *length);

     void deleteTable(void *table);

     LEGlyphID unicodeToGlyph(LEUnicode32 unicode);

 #if 0

     le_uint32 unicodesToGlyphs(LEUnicode *chars, le_uint32 nChars, LEGlyphID *glyphs,

         le_uint32 *charIndices, le_bool rightToLeft);

 #endif

     le_uint16 getUnitsPerEM();

     le_uint16 getGlyphAdvance(LEGlyphID glyph);

 private:

     FontObject();

     DirectoryEntry *findTable(LETag tag);

     CMAPEncodingSubtable *findCMAP(le_uint16 platformID, le_uint16 platformSpecificID);

     void initUnicodeCMAP();

     SFNTDirectory *directory;

     le_uint16 numTables;

     le_uint16 searchRange;

     le_uint16 entrySelector;

     le_uint16 rangeShift;

     CMAPTable *cmapTable;

     le_uint16 cmSegCount;

     le_uint16 cmSearchRange;

     le_uint16 cmEntrySelector;

     le_uint16 cmRangeShift;

     le_uint16 *cmEndCodes;

     le_uint16 *cmStartCodes;

     le_uint16 *cmIdDelta;

     le_uint16 *cmIdRangeOffset;

     HEADTable *headTable;

     HMTXTable *hmtxTable;

     le_uint16 numGlyphs;

     le_uint16 numOfLongHorMetrics;

     FILE *file;

 };

 #endif