diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_font/ttgsubtable.h')
| -rw-r--r-- | core/src/fpdfapi/fpdf_font/ttgsubtable.h | 419 |
1 files changed, 419 insertions, 0 deletions
diff --git a/core/src/fpdfapi/fpdf_font/ttgsubtable.h b/core/src/fpdfapi/fpdf_font/ttgsubtable.h new file mode 100644 index 0000000000..a1f0e8867a --- /dev/null +++ b/core/src/fpdfapi/fpdf_font/ttgsubtable.h @@ -0,0 +1,419 @@ +// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef TTGSUBTable_H
+#define TTGSUBTable_H
+#include "../../fx_freetype.h"
+#include "../../../include/fxcrt/fx_basic.h"
+#include "common.h"
+class CFX_GlyphMap
+{
+public:
+ CFX_GlyphMap();
+ ~CFX_GlyphMap();
+ void SetAt(int key, int value);
+ FX_BOOL Lookup(int key, int &value);
+protected:
+ CFX_BinaryBuf m_Buffer;
+};
+class CFX_CTTGSUBTable : public CFX_Object
+{
+public:
+ CFX_CTTGSUBTable(void): loaded(false), m_bFeautureMapLoad(FALSE) {};
+ CFX_CTTGSUBTable(FT_Bytes gsub): loaded(false), m_bFeautureMapLoad(FALSE)
+ {
+ LoadGSUBTable(gsub);
+ }
+ virtual ~CFX_CTTGSUBTable() {}
+ bool IsOk(void) const
+ {
+ return loaded;
+ }
+ bool LoadGSUBTable(FT_Bytes gsub);
+ bool GetVerticalGlyph(TT_uint32_t glyphnum, TT_uint32_t *vglyphnum);
+private:
+ struct tt_gsub_header {
+ TT_uint32_t Version;
+ TT_uint16_t ScriptList;
+ TT_uint16_t FeatureList;
+ TT_uint16_t LookupList;
+ };
+ struct TLangSys {
+ TT_uint16_t LookupOrder;
+ TT_uint16_t ReqFeatureIndex;
+ TT_uint16_t FeatureCount;
+ TT_uint16_t *FeatureIndex;
+ TLangSys(): LookupOrder(0), ReqFeatureIndex(0), FeatureCount(0), FeatureIndex(NULL) {}
+ ~TLangSys()
+ {
+ if(FeatureIndex) {
+ delete[] FeatureIndex;
+ }
+ }
+ private:
+ TLangSys(const TLangSys&);
+ TLangSys& operator=(const TLangSys&);
+ };
+ struct TLangSysRecord {
+ TT_uint32_t LangSysTag;
+ struct TLangSys LangSys;
+ TLangSysRecord(): LangSysTag(0) {}
+ private:
+ TLangSysRecord(const TLangSysRecord&);
+ TLangSysRecord& operator=(const TLangSysRecord&);
+ };
+ struct TScript {
+ TT_uint16_t DefaultLangSys;
+ TT_uint16_t LangSysCount;
+ struct TLangSysRecord *LangSysRecord;
+ TScript(): DefaultLangSys(0), LangSysCount(0), LangSysRecord(NULL) {}
+ ~TScript()
+ {
+ if(LangSysRecord) {
+ delete[] LangSysRecord;
+ }
+ }
+ private:
+ TScript(const TScript&);
+ TScript& operator=(const TScript&);
+ };
+ struct TScriptRecord {
+ TT_uint32_t ScriptTag;
+ struct TScript Script;
+ TScriptRecord(): ScriptTag(0) {}
+ private:
+ TScriptRecord(const TScriptRecord&);
+ TScriptRecord& operator=(const TScriptRecord&);
+ };
+ struct TScriptList {
+ TT_uint16_t ScriptCount;
+ struct TScriptRecord *ScriptRecord;
+ TScriptList(): ScriptCount(0), ScriptRecord(NULL) {}
+ ~TScriptList()
+ {
+ if(ScriptRecord) {
+ delete[] ScriptRecord;
+ }
+ }
+ private:
+ TScriptList(const TScriptList&);
+ TScriptList& operator=(const TScriptList&);
+ };
+ struct TFeature {
+ TT_uint16_t FeatureParams;
+ int LookupCount;
+ TT_uint16_t *LookupListIndex;
+ TFeature(): FeatureParams(0), LookupCount(0), LookupListIndex(NULL) {}
+ ~TFeature()
+ {
+ if(LookupListIndex) {
+ delete[] LookupListIndex;
+ }
+ }
+ private:
+ TFeature(const TFeature&);
+ TFeature& operator=(const TFeature&);
+ };
+ struct TFeatureRecord {
+ TT_uint32_t FeatureTag;
+ struct TFeature Feature;
+ TFeatureRecord(): FeatureTag(0) {}
+ private:
+ TFeatureRecord(const TFeatureRecord&);
+ TFeatureRecord& operator=(const TFeatureRecord&);
+ };
+ struct TFeatureList {
+ int FeatureCount;
+ struct TFeatureRecord *FeatureRecord;
+ TFeatureList(): FeatureCount(0), FeatureRecord(NULL) {}
+ ~TFeatureList()
+ {
+ if(FeatureRecord) {
+ delete[] FeatureRecord;
+ }
+ }
+ private:
+ TFeatureList(const TFeatureList&);
+ TFeatureList& operator=(const TFeatureList&);
+ };
+ enum TLookupFlag {
+ LOOKUPFLAG_RightToLeft = 0x0001,
+ LOOKUPFLAG_IgnoreBaseGlyphs = 0x0002,
+ LOOKUPFLAG_IgnoreLigatures = 0x0004,
+ LOOKUPFLAG_IgnoreMarks = 0x0008,
+ LOOKUPFLAG_Reserved = 0x00F0,
+ LOOKUPFLAG_MarkAttachmentType = 0xFF00,
+ };
+ struct TCoverageFormatBase {
+ TT_uint16_t CoverageFormat;
+ CFX_GlyphMap m_glyphMap;
+ TCoverageFormatBase(): CoverageFormat(0) {}
+ virtual ~TCoverageFormatBase() {}
+ private:
+ TCoverageFormatBase(const TCoverageFormatBase&);
+ TCoverageFormatBase& operator=(const TCoverageFormatBase&);
+ };
+ struct TCoverageFormat1: public TCoverageFormatBase {
+ TT_uint16_t GlyphCount;
+ TT_uint16_t *GlyphArray;
+ TCoverageFormat1(): GlyphCount(0), GlyphArray(NULL)
+ {
+ CoverageFormat = 1;
+ }
+ ~TCoverageFormat1()
+ {
+ if(GlyphArray) {
+ delete[] GlyphArray;
+ }
+ }
+ private:
+ TCoverageFormat1(const TCoverageFormat1&);
+ TCoverageFormat1& operator=(const TCoverageFormat1&);
+ };
+ struct TRangeRecord {
+ TT_uint16_t Start;
+ TT_uint16_t End;
+ TT_uint16_t StartCoverageIndex;
+ TRangeRecord(): Start(0), End(0), StartCoverageIndex(0) {}
+ friend bool operator > (const TRangeRecord &r1, const TRangeRecord &r2)
+ {
+ return r1.Start > r2.Start;
+ }
+ private:
+ TRangeRecord(const TRangeRecord&);
+ };
+ struct TCoverageFormat2: public TCoverageFormatBase {
+ TT_uint16_t RangeCount;
+ struct TRangeRecord *RangeRecord;
+ TCoverageFormat2(): RangeCount(0), RangeRecord(NULL)
+ {
+ CoverageFormat = 2;
+ }
+ ~TCoverageFormat2()
+ {
+ if(RangeRecord) {
+ delete[] RangeRecord;
+ }
+ }
+ private:
+ TCoverageFormat2(const TCoverageFormat2&);
+ TCoverageFormat2& operator=(const TCoverageFormat2&);
+ };
+ struct TClassDefFormatBase {
+ TT_uint16_t ClassFormat;
+ TClassDefFormatBase(): ClassFormat(0) {}
+ virtual ~TClassDefFormatBase() {}
+ private:
+ TClassDefFormatBase(const TClassDefFormatBase&);
+ TClassDefFormatBase& operator=(const TClassDefFormatBase&);
+ };
+ struct TClassDefFormat1: public TClassDefFormatBase {
+ TT_uint16_t StartGlyph;
+ TT_uint16_t GlyphCount;
+ TT_uint16_t *ClassValueArray;
+ TClassDefFormat1(): StartGlyph(0), GlyphCount(0), ClassValueArray(NULL)
+ {
+ ClassFormat = 1;
+ }
+ ~TClassDefFormat1()
+ {
+ if(ClassValueArray) {
+ delete[] ClassValueArray;
+ }
+ }
+ private:
+ TClassDefFormat1(const TClassDefFormat1&);
+ TClassDefFormat1& operator=(const TClassDefFormat1&);
+ };
+ struct TClassRangeRecord {
+ TT_uint16_t Start;
+ TT_uint16_t End;
+ TT_uint16_t Class;
+ TClassRangeRecord(): Start(0), End(0), Class(0) {}
+ private:
+ TClassRangeRecord(const TClassRangeRecord&);
+ TClassRangeRecord& operator=(const TClassRangeRecord&);
+ };
+ struct TClassDefFormat2: public TClassDefFormatBase {
+ TT_uint16_t ClassRangeCount;
+ struct TClassRangeRecord *ClassRangeRecord;
+ TClassDefFormat2(): ClassRangeCount(0), ClassRangeRecord(NULL)
+ {
+ ClassFormat = 2;
+ }
+ ~TClassDefFormat2()
+ {
+ if(ClassRangeRecord) {
+ delete[] ClassRangeRecord;
+ }
+ }
+ private:
+ TClassDefFormat2(const TClassDefFormat2&);
+ TClassDefFormat2& operator=(const TClassDefFormat2&);
+ };
+ struct TDevice {
+ TT_uint16_t StartSize;
+ TT_uint16_t EndSize;
+ TT_uint16_t DeltaFormat;
+ TDevice(): StartSize(0), EndSize(0), DeltaFormat(0) {}
+ private:
+ TDevice(const TDevice&);
+ TDevice& operator=(const TDevice&);
+ };
+ struct TSubTableBase {
+ TT_uint16_t SubstFormat;
+ TSubTableBase(): SubstFormat(0) {}
+ virtual ~TSubTableBase() {}
+ private:
+ TSubTableBase(const TSubTableBase&);
+ TSubTableBase& operator=(const TSubTableBase&);
+ };
+ struct TSingleSubstFormat1: public TSubTableBase {
+ TCoverageFormatBase *Coverage;
+ TT_int16_t DeltaGlyphID;
+ TSingleSubstFormat1(): DeltaGlyphID(0), Coverage(NULL)
+ {
+ SubstFormat = 1;
+ }
+ ~TSingleSubstFormat1()
+ {
+ if(Coverage) {
+ delete Coverage;
+ }
+ }
+ private:
+ TSingleSubstFormat1(const TSingleSubstFormat1&);
+ TSingleSubstFormat1& operator=(const TSingleSubstFormat1&);
+ };
+ struct TSingleSubstFormat2: public TSubTableBase {
+ TCoverageFormatBase *Coverage;
+ TT_uint16_t GlyphCount;
+ TT_uint16_t *Substitute;
+ TSingleSubstFormat2(): Coverage(NULL), GlyphCount(0), Substitute(NULL)
+ {
+ SubstFormat = 2;
+ }
+ ~TSingleSubstFormat2()
+ {
+ if(Coverage) {
+ delete Coverage;
+ }
+ if(Substitute) {
+ delete[] Substitute;
+ }
+ }
+ private:
+ TSingleSubstFormat2(const TSingleSubstFormat2&);
+ TSingleSubstFormat2& operator=(const TSingleSubstFormat2&);
+ };
+ struct TLookup {
+ TT_uint16_t LookupType;
+ TT_uint16_t LookupFlag;
+ TT_uint16_t SubTableCount;
+ struct TSubTableBase **SubTable;
+ TLookup(): LookupType(0), LookupFlag(0), SubTableCount(0), SubTable(NULL) {}
+ ~TLookup()
+ {
+ if(SubTableCount > 0 && SubTable != NULL) {
+ for(int i = 0; i < SubTableCount; i++) {
+ delete SubTable[i];
+ }
+ delete[] SubTable;
+ }
+ }
+ private:
+ TLookup(const TLookup&);
+ TLookup& operator=(const TLookup&);
+ };
+ struct TLookupList {
+ int LookupCount;
+ struct TLookup *Lookup;
+ TLookupList(): LookupCount(0), Lookup(NULL) {}
+ ~TLookupList()
+ {
+ if(Lookup) {
+ delete[] Lookup;
+ }
+ }
+ private:
+ TLookupList(const TLookupList&);
+ TLookupList& operator=(const TLookupList&);
+ };
+ bool Parse(
+ FT_Bytes scriptlist,
+ FT_Bytes featurelist,
+ FT_Bytes lookuplist);
+ void ParseScriptList(FT_Bytes raw, TScriptList *rec);
+ void ParseScript(FT_Bytes raw, TScript *rec);
+ void ParseLangSys(FT_Bytes raw, TLangSys *rec);
+ void ParseFeatureList(FT_Bytes raw, TFeatureList *rec);
+ void ParseFeature(FT_Bytes raw, TFeature *rec);
+ void ParseLookupList(FT_Bytes raw, TLookupList *rec);
+ void ParseLookup(FT_Bytes raw, TLookup *rec);
+ void ParseCoverage(FT_Bytes raw, TCoverageFormatBase **rec);
+ void ParseCoverageFormat1(FT_Bytes raw, TCoverageFormat1 *rec);
+ void ParseCoverageFormat2(FT_Bytes raw, TCoverageFormat2 *rec);
+ void ParseSingleSubst(FT_Bytes raw, TSubTableBase **rec);
+ void ParseSingleSubstFormat1(FT_Bytes raw, TSingleSubstFormat1 *rec);
+ void ParseSingleSubstFormat2(FT_Bytes raw, TSingleSubstFormat2 *rec);
+ bool GetVerticalGlyphSub(
+ TT_uint32_t glyphnum,
+ TT_uint32_t *vglyphnum,
+ struct TFeature *Feature);
+ bool GetVerticalGlyphSub2(
+ TT_uint32_t glyphnum,
+ TT_uint32_t *vglyphnum,
+ struct TLookup *Lookup);
+ int GetCoverageIndex(struct TCoverageFormatBase *Coverage, TT_uint32_t g);
+ TT_uint8_t GetUInt8(FT_Bytes& p) const
+ {
+ TT_uint8_t ret = p[0];
+ p += 1;
+ return ret;
+ }
+ TT_int16_t GetInt16(FT_Bytes& p) const
+ {
+ TT_uint16_t ret = p[0] << 8 | p[1];
+ p += 2;
+ return *(TT_int16_t*)&ret;
+ }
+ TT_uint16_t GetUInt16(FT_Bytes& p) const
+ {
+ TT_uint16_t ret = p[0] << 8 | p[1];
+ p += 2;
+ return ret;
+ }
+ TT_int32_t GetInt32(FT_Bytes& p) const
+ {
+ TT_uint32_t ret = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
+ p += 4;
+ return *(TT_int32_t*)&ret;
+ }
+ TT_uint32_t GetUInt32(FT_Bytes& p) const
+ {
+ TT_uint32_t ret = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
+ p += 4;
+ return ret;
+ }
+ CFX_CMapDWordToDWord m_featureMap;
+ FX_BOOL m_bFeautureMapLoad;
+ bool loaded;
+ struct tt_gsub_header header;
+ struct TScriptList ScriptList;
+ struct TFeatureList FeatureList;
+ struct TLookupList LookupList;
+};
+class CFX_GSUBTable : public IFX_GSUBTable, public CFX_Object
+{
+public:
+ virtual void Release()
+ {
+ delete this;
+ }
+ virtual FX_BOOL GetVerticalGlyph(FX_DWORD glyphnum, FX_DWORD* vglyphnum);
+ CFX_CTTGSUBTable m_GsubImp;
+};
+#endif
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