http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/freetype/ftxgpos.h

/******************************************************************* * * ftxgpos.h * * TrueType Open GPOS table support * * Copyright 1996-1999 by * David Turner, Robert Wilhelm, and Werner Lemberg. * * This file is part of the FreeType project, and may only be used * modified and distributed under the terms of the FreeType project * license, LICENSE.TXT. By continuing to use, modify, or distribute * this file you indicate that you have read the license and * understand and accept it fully. * ******************************************************************/ #ifndef FTXOPEN_H #error "Don't include this file! Use ftxopen.h instead." #endif #ifndef FTXGPOS_H #define FTXGPOS_H #ifdef __cplusplus extern "C" { #endif #define TTO_Err_Invalid_GPOS_SubTable_Format 0x1020 #define TTO_Err_Invalid_GPOS_SubTable 0x1021 /* Lookup types for glyph positioning */ #define GPOS_LOOKUP_SINGLE 1 #define GPOS_LOOKUP_PAIR 2 #define GPOS_LOOKUP_CURSIVE 3 #define GPOS_LOOKUP_MARKBASE 4 #define GPOS_LOOKUP_MARKLIG 5 #define GPOS_LOOKUP_MARKMARK 6 #define GPOS_LOOKUP_CONTEXT 7 #define GPOS_LOOKUP_CHAIN 8 struct TTO_GPOSHeader_ { TT_Bool loaded; TT_ULong offset; TT_Fixed Version; TTO_ScriptList ScriptList; TTO_FeatureList FeatureList; TTO_LookupList LookupList; TTO_GDEFHeader* gdef; }; typedef struct TTO_GPOSHeader_ TTO_GPOSHeader; /* shared tables */ struct TTO_ValueRecord_ { TT_Short XPlacement; /* horizontal adjustment for placement */ TT_Short YPlacement; /* vertical adjustment for placement */ TT_Short XAdvance; /* horizontal adjustment for advance */ TT_Short YAdvance; /* vertical adjustment for advance */ TTO_Device XPlacementDevice; /* device table for horizontal placement */ TTO_Device YPlacementDevice; /* device table for vertical placement */ TTO_Device XAdvanceDevice; /* device table for horizontal advance */ TTO_Device YAdvanceDevice; /* device table for vertical advance */ TT_UShort XIdPlacement; /* horizontal placement metric ID */ TT_UShort YIdPlacement; /* vertical placement metric ID */ TT_UShort XIdAdvance; /* horizontal advance metric ID */ TT_UShort YIdAdvance; /* vertical advance metric ID */ }; typedef struct TTO_ValueRecord_ TTO_ValueRecord; /* Mask values to scan the value format of the ValueRecord structure. We always expand compressed ValueRecords of the font. */ #define HAVE_X_PLACEMENT 0x0001 #define HAVE_Y_PLACEMENT 0x0002 #define HAVE_X_ADVANCE 0x0004 #define HAVE_Y_ADVANCE 0x0008 #define HAVE_X_PLACEMENT_DEVICE 0x0010 #define HAVE_Y_PLACEMENT_DEVICE 0x0020 #define HAVE_X_ADVANCE_DEVICE 0x0040 #define HAVE_Y_ADVANCE_DEVICE 0x0080 #define HAVE_X_ID_PLACEMENT 0x0100 #define HAVE_Y_ID_PLACEMENT 0x0200 #define HAVE_X_ID_ADVANCE 0x0400 #define HAVE_Y_ID_ADVANCE 0x0800 struct TTO_AnchorFormat1_ { TT_Short XCoordinate; /* horizontal value */ TT_Short YCoordinate; /* vertical value */ }; typedef struct TTO_AnchorFormat1_ TTO_AnchorFormat1; struct TTO_AnchorFormat2_ { TT_Short XCoordinate; /* horizontal value */ TT_Short YCoordinate; /* vertical value */ TT_UShort AnchorPoint; /* index to glyph contour point */ }; typedef struct TTO_AnchorFormat2_ TTO_AnchorFormat2; struct TTO_AnchorFormat3_ { TT_Short XCoordinate; /* horizontal value */ TT_Short YCoordinate; /* vertical value */ TTO_Device XDeviceTable; /* device table for X coordinate */ TTO_Device YDeviceTable; /* device table for Y coordinate */ }; typedef struct TTO_AnchorFormat3_ TTO_AnchorFormat3; struct TTO_AnchorFormat4_ { TT_UShort XIdAnchor; /* horizontal metric ID */ TT_UShort YIdAnchor; /* vertical metric ID */ }; typedef struct TTO_AnchorFormat4_ TTO_AnchorFormat4; struct TTO_Anchor_ { TT_UShort PosFormat; /* 1, 2, 3, or 4 -- 0 indicates that there is no Anchor table */ union { TTO_AnchorFormat1 af1; TTO_AnchorFormat2 af2; TTO_AnchorFormat3 af3; TTO_AnchorFormat4 af4; } af; }; typedef struct TTO_Anchor_ TTO_Anchor; struct TTO_MarkRecord_ { TT_UShort Class; /* mark class */ TTO_Anchor MarkAnchor; /* anchor table */ }; typedef struct TTO_MarkRecord_ TTO_MarkRecord; struct TTO_MarkArray_ { TT_UShort MarkCount; /* number of MarkRecord tables */ TTO_MarkRecord* MarkRecord; /* array of MarkRecord tables */ }; typedef struct TTO_MarkArray_ TTO_MarkArray; /* LookupType 1 */ struct TTO_SinglePosFormat1_ { TTO_ValueRecord Value; /* ValueRecord for all covered glyphs */ }; typedef struct TTO_SinglePosFormat1_ TTO_SinglePosFormat1; struct TTO_SinglePosFormat2_ { TT_UShort ValueCount; /* number of ValueRecord tables */ TTO_ValueRecord* Value; /* array of ValueRecord tables */ }; typedef struct TTO_SinglePosFormat2_ TTO_SinglePosFormat2; struct TTO_SinglePos_ { TT_UShort PosFormat; /* 1 or 2 */ TTO_Coverage Coverage; /* Coverage table */ TT_UShort ValueFormat; /* format of ValueRecord table */ union { TTO_SinglePosFormat1 spf1; TTO_SinglePosFormat2 spf2; } spf; }; typedef struct TTO_SinglePos_ TTO_SinglePos; /* LookupType 2 */ struct TTO_PairValueRecord_ { TT_UShort SecondGlyph; /* glyph ID for second glyph */ TTO_ValueRecord Value1; /* pos. data for first glyph */ TTO_ValueRecord Value2; /* pos. data for second glyph */ }; typedef struct TTO_PairValueRecord_ TTO_PairValueRecord; struct TTO_PairSet_ { TT_UShort PairValueCount; /* number of PairValueRecord tables */ TTO_PairValueRecord* PairValueRecord; /* array of PairValueRecord tables */ }; typedef struct TTO_PairSet_ TTO_PairSet; struct TTO_PairPosFormat1_ { TT_UShort PairSetCount; /* number of PairSet tables */ TTO_PairSet* PairSet; /* array of PairSet tables */ }; typedef struct TTO_PairPosFormat1_ TTO_PairPosFormat1; struct TTO_Class2Record_ { TTO_ValueRecord Value1; /* pos. data for first glyph */ TTO_ValueRecord Value2; /* pos. data for second glyph */ }; typedef struct TTO_Class2Record_ TTO_Class2Record; struct TTO_Class1Record_ { TTO_Class2Record* Class2Record; /* array of Class2Record tables */ }; typedef struct TTO_Class1Record_ TTO_Class1Record; struct TTO_PairPosFormat2_ { TTO_ClassDefinition ClassDef1; /* class def. for first glyph */ TTO_ClassDefinition ClassDef2; /* class def. for second glyph */ TT_UShort Class1Count; /* number of classes in ClassDef1 table */ TT_UShort Class2Count; /* number of classes in ClassDef2 table */ TTO_Class1Record* Class1Record; /* array of Class1Record tables */ }; typedef struct TTO_PairPosFormat2_ TTO_PairPosFormat2; struct TTO_PairPos_ { TT_UShort PosFormat; /* 1 or 2 */ TTO_Coverage Coverage; /* Coverage table */ TT_UShort ValueFormat1; /* format of ValueRecord table for first glyph */ TT_UShort ValueFormat2; /* format of ValueRecord table for second glyph */ union { TTO_PairPosFormat1 ppf1; TTO_PairPosFormat2 ppf2; } ppf; }; typedef struct TTO_PairPos_ TTO_PairPos; /* LookupType 3 */ struct TTO_EntryExitRecord_ { TTO_Anchor EntryAnchor; /* entry Anchor table */ TTO_Anchor ExitAnchor; /* exit Anchor table */ }; typedef struct TTO_EntryExitRecord_ TTO_EntryExitRecord; struct TTO_CursivePos_ { TT_UShort PosFormat; /* always 1 */ TTO_Coverage Coverage; /* Coverage table */ TT_UShort EntryExitCount; /* number of EntryExitRecord tables */ TTO_EntryExitRecord* EntryExitRecord; /* array of EntryExitRecord tables */ }; typedef struct TTO_CursivePos_ TTO_CursivePos; /* LookupType 4 */ struct TTO_BaseRecord_ { TTO_Anchor* BaseAnchor; /* array of base glyph anchor tables */ }; typedef struct TTO_BaseRecord_ TTO_BaseRecord; struct TTO_BaseArray_ { TT_UShort BaseCount; /* number of BaseRecord tables */ TTO_BaseRecord* BaseRecord; /* array of BaseRecord tables */ }; typedef struct TTO_BaseArray_ TTO_BaseArray; struct TTO_MarkBasePos_ { TT_UShort PosFormat; /* always 1 */ TTO_Coverage MarkCoverage; /* mark glyph coverage table */ TTO_Coverage BaseCoverage; /* base glyph coverage table */ TT_UShort ClassCount; /* number of mark classes */ TTO_MarkArray MarkArray; /* mark array table */ TTO_BaseArray BaseArray; /* base array table */ }; typedef struct TTO_MarkBasePos_ TTO_MarkBasePos; /* LookupType 5 */ struct TTO_ComponentRecord_ { TTO_Anchor* LigatureAnchor; /* array of ligature glyph anchor tables */ }; typedef struct TTO_ComponentRecord_ TTO_ComponentRecord; struct TTO_LigatureAttach_ { TT_UShort ComponentCount; /* number of ComponentRecord tables */ TTO_ComponentRecord* ComponentRecord; /* array of ComponentRecord tables */ }; typedef struct TTO_LigatureAttach_ TTO_LigatureAttach; struct TTO_LigatureArray_ { TT_UShort LigatureCount; /* number of LigatureAttach tables */ TTO_LigatureAttach* LigatureAttach; /* array of LigatureAttach tables */ }; typedef struct TTO_LigatureArray_ TTO_LigatureArray; struct TTO_MarkLigPos_ { TT_UShort PosFormat; /* always 1 */ TTO_Coverage MarkCoverage; /* mark glyph coverage table */ TTO_Coverage LigatureCoverage; /* ligature glyph coverage table */ TT_UShort ClassCount; /* number of mark classes */ TTO_MarkArray MarkArray; /* mark array table */ TTO_LigatureArray LigatureArray; /* ligature array table */ }; typedef struct TTO_MarkLigPos_ TTO_MarkLigPos; /* LookupType 6 */ struct TTO_Mark2Record_ { TTO_Anchor* Mark2Anchor; /* array of mark glyph anchor tables */ }; typedef struct TTO_Mark2Record_ TTO_Mark2Record; struct TTO_Mark2Array_ { TT_UShort Mark2Count; /* number of Mark2Record tables */ TTO_Mark2Record* Mark2Record; /* array of Mark2Record tables */ }; typedef struct TTO_Mark2Array_ TTO_Mark2Array; struct TTO_MarkMarkPos_ { TT_UShort PosFormat; /* always 1 */ TTO_Coverage Mark1Coverage; /* first mark glyph coverage table */ TTO_Coverage Mark2Coverage; /* second mark glyph coverave table */ TT_UShort ClassCount; /* number of combining mark classes */ TTO_MarkArray Mark1Array; /* MarkArray table for first mark */ TTO_Mark2Array Mark2Array; /* MarkArray table for second mark */ }; typedef struct TTO_MarkMarkPos_ TTO_MarkMarkPos; /* needed by both lookup type 7 and 8 */ struct TTO_PosLookupRecord_ { TT_UShort SequenceIndex; /* index into current glyph sequence */ TT_UShort LookupListIndex; /* Lookup to apply to that pos. */ }; typedef struct TTO_PosLookupRecord_ TTO_PosLookupRecord; /* LookupType 7 */ struct TTO_PosRule_ { TT_UShort GlyphCount; /* total number of input glyphs */ TT_UShort PosCount; /* number of PosLookupRecord tables */ TT_UShort* Input; /* array of input glyph IDs */ TTO_PosLookupRecord* PosLookupRecord; /* array of PosLookupRecord tables */ }; typedef struct TTO_PosRule_ TTO_PosRule; struct TTO_PosRuleSet_ { TT_UShort PosRuleCount; /* number of PosRule tables */ TTO_PosRule* PosRule; /* array of PosRule tables */ }; typedef struct TTO_PosRuleSet_ TTO_PosRuleSet; struct TTO_ContextPosFormat1_ { TTO_Coverage Coverage; /* Coverage table */ TT_UShort PosRuleSetCount; /* number of PosRuleSet tables */ TTO_PosRuleSet* PosRuleSet; /* array of PosRuleSet tables */ }; typedef struct TTO_ContextPosFormat1_ TTO_ContextPosFormat1; struct TTO_PosClassRule_ { TT_UShort GlyphCount; /* total number of context classes */ TT_UShort PosCount; /* number of PosLookupRecord tables */ TT_UShort* Class; /* array of classes */ TTO_PosLookupRecord* PosLookupRecord; /* array of PosLookupRecord tables */ }; typedef struct TTO_PosClassRule_ TTO_PosClassRule; struct TTO_PosClassSet_ { TT_UShort PosClassRuleCount; /* number of PosClassRule tables */ TTO_PosClassRule* PosClassRule; /* array of PosClassRule tables */ }; typedef struct TTO_PosClassSet_ TTO_PosClassSet; /* The `MaxContextLength' field is not defined in the TTO specification but simplifies the implementation of this format. It holds the maximal context length used in the context rules. */ struct TTO_ContextPosFormat2_ { TT_UShort MaxContextLength; /* maximal context length */ TTO_Coverage Coverage; /* Coverage table */ TTO_ClassDefinition ClassDef; /* ClassDef table */ TT_UShort PosClassSetCount; /* number of PosClassSet tables */ TTO_PosClassSet* PosClassSet; /* array of PosClassSet tables */ }; typedef struct TTO_ContextPosFormat2_ TTO_ContextPosFormat2; struct TTO_ContextPosFormat3_ { TT_UShort GlyphCount; /* number of input glyphs */ TT_UShort PosCount; /* number of PosLookupRecord tables */ TTO_Coverage* Coverage; /* array of Coverage tables */ TTO_PosLookupRecord* PosLookupRecord; /* array of PosLookupRecord tables */ }; typedef struct TTO_ContextPosFormat3_ TTO_ContextPosFormat3; struct TTO_ContextPos_ { TT_UShort PosFormat; /* 1, 2, or 3 */ union { TTO_ContextPosFormat1 cpf1; TTO_ContextPosFormat2 cpf2; TTO_ContextPosFormat3 cpf3; } cpf; }; typedef struct TTO_ContextPos_ TTO_ContextPos; /* LookupType 8 */ struct TTO_ChainPosRule_ { TT_UShort BacktrackGlyphCount; /* total number of backtrack glyphs */ TT_UShort* Backtrack; /* array of backtrack glyph IDs */ TT_UShort InputGlyphCount; /* total number of input glyphs */ TT_UShort* Input; /* array of input glyph IDs */ TT_UShort LookaheadGlyphCount; /* total number of lookahead glyphs */ TT_UShort* Lookahead; /* array of lookahead glyph IDs */ TT_UShort PosCount; /* number of PosLookupRecords */ TTO_PosLookupRecord* PosLookupRecord; /* array of PosLookupRecords */ }; typedef struct TTO_ChainPosRule_ TTO_ChainPosRule; struct TTO_ChainPosRuleSet_ { TT_UShort ChainPosRuleCount; /* number of ChainPosRule tables */ TTO_ChainPosRule* ChainPosRule; /* array of ChainPosRule tables */ }; typedef struct TTO_ChainPosRuleSet_ TTO_ChainPosRuleSet; struct TTO_ChainContextPosFormat1_ { TTO_Coverage Coverage; /* Coverage table */ TT_UShort ChainPosRuleSetCount; /* number of ChainPosRuleSet tables */ TTO_ChainPosRuleSet* ChainPosRuleSet; /* array of ChainPosRuleSet tables */ }; typedef struct TTO_ChainContextPosFormat1_ TTO_ChainContextPosFormat1; struct TTO_ChainPosClassRule_ { TT_UShort BacktrackGlyphCount; /* total number of backtrack classes */ TT_UShort* Backtrack; /* array of backtrack classes */ TT_UShort InputGlyphCount; /* total number of context classes */ TT_UShort* Input; /* array of context classes */ TT_UShort LookaheadGlyphCount; /* total number of lookahead classes */ TT_UShort* Lookahead; /* array of lookahead classes */ TT_UShort PosCount; /* number of PosLookupRecords */ TTO_PosLookupRecord* PosLookupRecord; /* array of substitution lookups */ }; typedef struct TTO_ChainPosClassRule_ TTO_ChainPosClassRule; struct TTO_ChainPosClassSet_ { TT_UShort ChainPosClassRuleCount; /* number of ChainPosClassRule tables */ TTO_ChainPosClassRule* ChainPosClassRule; /* array of ChainPosClassRule tables */ }; typedef struct TTO_ChainPosClassSet_ TTO_ChainPosClassSet; /* The `MaxXXXLength' fields are not defined in the TTO specification but simplifies the implementation of this format. It holds the maximal context length used in the specific context rules. */ struct TTO_ChainContextPosFormat2_ { TTO_Coverage Coverage; /* Coverage table */ TT_UShort MaxBacktrackLength; /* maximal backtrack length */ TTO_ClassDefinition BacktrackClassDef; /* BacktrackClassDef table */ TT_UShort MaxInputLength; /* maximal input length */ TTO_ClassDefinition InputClassDef; /* InputClassDef table */ TT_UShort MaxLookaheadLength; /* maximal lookahead length */ TTO_ClassDefinition LookaheadClassDef; /* LookaheadClassDef table */ TT_UShort ChainPosClassSetCount; /* number of ChainPosClassSet tables */ TTO_ChainPosClassSet* ChainPosClassSet; /* array of ChainPosClassSet tables */ }; typedef struct TTO_ChainContextPosFormat2_ TTO_ChainContextPosFormat2; struct TTO_ChainContextPosFormat3_ { TT_UShort BacktrackGlyphCount; /* number of backtrack glyphs */ TTO_Coverage* BacktrackCoverage; /* array of backtrack Coverage tables */ TT_UShort InputGlyphCount; /* number of input glyphs */ TTO_Coverage* InputCoverage; /* array of input coverage tables */ TT_UShort LookaheadGlyphCount; /* number of lookahead glyphs */ TTO_Coverage* LookaheadCoverage; /* array of lookahead coverage tables */ TT_UShort PosCount; /* number of PosLookupRecords */ TTO_PosLookupRecord* PosLookupRecord; /* array of substitution lookups */ }; typedef struct TTO_ChainContextPosFormat3_ TTO_ChainContextPosFormat3; struct TTO_ChainContextPos_ { TT_UShort PosFormat; /* 1, 2, or 3 */ union { TTO_ChainContextPosFormat1 ccpf1; TTO_ChainContextPosFormat2 ccpf2; TTO_ChainContextPosFormat3 ccpf3; } ccpf; }; typedef struct TTO_ChainContextPos_ TTO_ChainContextPos; union TTO_GPOS_SubTable_ { TTO_SinglePos single; TTO_PairPos pair; TTO_CursivePos cursive; TTO_MarkBasePos markbase; TTO_MarkLigPos marklig; TTO_MarkMarkPos markmark; TTO_ContextPos context; TTO_ChainContextPos chain; }; typedef union TTO_GPOS_SubTable_ TTO_GPOS_SubTable; /* finally, the GPOS API */ EXPORT_DEF TT_Error TT_Init_GPOS_Extension( TT_Engine engine ); EXPORT_DEF TT_Error TT_Load_GPOS_Table( TT_Face face, TTO_GPOSHeader* gpos, TTO_GDEFHeader* gdef ); EXPORT_DEF TT_Error TT_GPOS_Select_Script( TTO_GPOSHeader* gpos, TT_ULong script_tag, TT_UShort* script_index ); EXPORT_DEF TT_Error TT_GPOS_Select_Language( TTO_GPOSHeader* gpos, TT_ULong language_tag, TT_UShort script_index, TT_UShort* language_index, TT_UShort* req_feature_index ); EXPORT_DEF TT_Error TT_GPOS_Select_Feature( TTO_GPOSHeader* gpos, TT_ULong feature_tag, TT_UShort script_index, TT_UShort language_index, TT_UShort* feature_index ); EXPORT_DEF TT_Error TT_GPOS_Query_Scripts( TTO_GPOSHeader* gpos, TT_ULong** script_tag_list ); EXPORT_DEF TT_Error TT_GPOS_Query_Languages( TTO_GPOSHeader* gpos, TT_UShort script_index, TT_ULong** language_tag_list ); EXPORT_DEF TT_Error TT_GPOS_Query_Features( TTO_GPOSHeader* gpos, TT_UShort script_index, TT_UShort language_index, TT_ULong** feature_tag_list ); EXPORT_DEF TT_Error TT_GPOS_Add_Feature( TTO_GPOSHeader* gpos, TT_UShort feature_index, TT_UShort property ); EXPORT_DEF TT_Error TT_GPOS_Clear_Features( TTO_GPOSHeader* gpos ); #ifdef __cplusplus } #endif #endif /* FTXGPOS_H */ /* END */