diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_font/ttgsubtable.cpp')
| -rw-r--r-- | core/src/fpdfapi/fpdf_font/ttgsubtable.cpp | 904 |
1 files changed, 452 insertions, 452 deletions
diff --git a/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp b/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp index b7a7864c2d..42f77de57b 100644 --- a/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp +++ b/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp @@ -1,452 +1,452 @@ -// 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
-
-#include "../../../include/fxge/fx_ge.h"
-#include "../../../include/fxge/fx_freetype.h"
-#include "ttgsubtable.h"
-CFX_GlyphMap::CFX_GlyphMap()
-{
-}
-CFX_GlyphMap::~CFX_GlyphMap()
-{
-}
-extern "C" {
- static int _CompareInt(const void* p1, const void* p2)
- {
- return (*(FX_DWORD*)p1) - (*(FX_DWORD*)p2);
- }
-};
-struct _IntPair {
- FX_INT32 key;
- FX_INT32 value;
-};
-void CFX_GlyphMap::SetAt(int key, int value)
-{
- FX_DWORD count = m_Buffer.GetSize() / sizeof(_IntPair);
- _IntPair* buf = (_IntPair*)m_Buffer.GetBuffer();
- _IntPair pair = {key, value};
- if (count == 0 || key > buf[count - 1].key) {
- m_Buffer.AppendBlock(&pair, sizeof(_IntPair));
- return;
- }
- int low = 0, high = count - 1;
- while (low <= high) {
- int mid = (low + high) / 2;
- if (buf[mid].key < key) {
- low = mid + 1;
- } else if (buf[mid].key > key) {
- high = mid - 1;
- } else {
- buf[mid].value = value;
- return;
- }
- }
- m_Buffer.InsertBlock(low * sizeof(_IntPair), &pair, sizeof(_IntPair));
-}
-FX_BOOL CFX_GlyphMap::Lookup(int key, int &value)
-{
- FX_LPVOID pResult = FXSYS_bsearch(&key, m_Buffer.GetBuffer(), m_Buffer.GetSize() / sizeof(_IntPair),
- sizeof(_IntPair), _CompareInt);
- if (pResult == NULL) {
- return FALSE;
- }
- value = ((FX_DWORD*)pResult)[1];
- return TRUE;
-}
-bool CFX_CTTGSUBTable::LoadGSUBTable(FT_Bytes gsub)
-{
- header.Version = gsub[0] << 24 | gsub[1] << 16 | gsub[2] << 8 | gsub[3];
- if(header.Version != 0x00010000) {
- return false;
- }
- header.ScriptList = gsub[4] << 8 | gsub[5];
- header.FeatureList = gsub[6] << 8 | gsub[7];
- header.LookupList = gsub[8] << 8 | gsub[9];
- return Parse(
- &gsub[header.ScriptList],
- &gsub[header.FeatureList],
- &gsub[header.LookupList]);
-}
-bool CFX_CTTGSUBTable::GetVerticalGlyph(TT_uint32_t glyphnum, TT_uint32_t *vglyphnum)
-{
- TT_uint32_t tag[] = {
- (TT_uint8_t)'v' << 24 |
- (TT_uint8_t)'r' << 16 |
- (TT_uint8_t)'t' << 8 |
- (TT_uint8_t)'2',
- (TT_uint8_t)'v' << 24 |
- (TT_uint8_t)'e' << 16 |
- (TT_uint8_t)'r' << 8 |
- (TT_uint8_t)'t',
- };
- if (!m_bFeautureMapLoad) {
- for (int i = 0; i < ScriptList.ScriptCount; i++) {
- for (int j = 0; j < (ScriptList.ScriptRecord + i)->Script.LangSysCount; ++j) {
- for (int k = 0; k < ((ScriptList.ScriptRecord + i)->Script.LangSysRecord + j)->LangSys.FeatureCount; ++k) {
- FX_DWORD index = *(((ScriptList.ScriptRecord + i)->Script.LangSysRecord + j)->LangSys.FeatureIndex + k);
- if (FeatureList.FeatureRecord[index].FeatureTag == tag[0] || FeatureList.FeatureRecord[index].FeatureTag == tag[1]) {
- FX_DWORD value;
- if (!m_featureMap.Lookup(index, value)) {
- m_featureMap.SetAt(index, index);
- }
- }
- }
- }
- }
- if (!m_featureMap.GetStartPosition()) {
- for (int i = 0; i < FeatureList.FeatureCount; i ++) {
- if (FeatureList.FeatureRecord[i].FeatureTag == tag[0] || FeatureList.FeatureRecord[i].FeatureTag == tag[1]) {
- FX_DWORD value;
- if (!m_featureMap.Lookup(i, value)) {
- m_featureMap.SetAt(i, i);
- }
- }
- }
- }
- m_bFeautureMapLoad = TRUE;
- }
- FX_POSITION pos = m_featureMap.GetStartPosition();
- while (pos) {
- FX_DWORD index, value;
- m_featureMap.GetNextAssoc(pos, index, value);
- if(GetVerticalGlyphSub(glyphnum, vglyphnum, &FeatureList.FeatureRecord[value].Feature)) {
- return true;
- }
- }
- return false;
-}
-bool CFX_CTTGSUBTable::GetVerticalGlyphSub(
- TT_uint32_t glyphnum,
- TT_uint32_t *vglyphnum,
- struct TFeature *Feature)
-{
- for(int i = 0; i < Feature->LookupCount; i++) {
- int index = Feature->LookupListIndex[i];
- if(index < 0 || LookupList.LookupCount < index) {
- continue;
- }
- if(LookupList.Lookup[index].LookupType == 1) {
- if(GetVerticalGlyphSub2(
- glyphnum,
- vglyphnum,
- &LookupList.Lookup[index])) {
- return true;
- }
- }
- }
- return false;
-}
-bool CFX_CTTGSUBTable::GetVerticalGlyphSub2(
- TT_uint32_t glyphnum,
- TT_uint32_t *vglyphnum,
- struct TLookup *Lookup)
-{
- for(int i = 0; i < Lookup->SubTableCount; i++) {
- switch(Lookup->SubTable[i]->SubstFormat) {
- case 1: {
- TSingleSubstFormat1 *tbl1 = (TSingleSubstFormat1*)Lookup->SubTable[i];
- if(GetCoverageIndex(tbl1->Coverage, glyphnum) >= 0) {
- *vglyphnum = glyphnum + tbl1->DeltaGlyphID;
- return true;
- }
- break;
- }
- case 2: {
- TSingleSubstFormat2 *tbl2 = (TSingleSubstFormat2*)Lookup->SubTable[i];
- int index = -1;
- index = GetCoverageIndex(tbl2->Coverage, glyphnum);
- if(0 <= index && index < tbl2->GlyphCount) {
- *vglyphnum = tbl2->Substitute[index];
- return true;
- }
- break;
- }
- }
- }
- return false;
-}
-int CFX_CTTGSUBTable::GetCoverageIndex(struct TCoverageFormatBase *Coverage, TT_uint32_t g)
-{
- int i = 0;
- if(Coverage == NULL) {
- return -1;
- }
- switch(Coverage->CoverageFormat) {
- case 1: {
- TCoverageFormat1 *c1 = (TCoverageFormat1*)Coverage;
- for(i = 0; i < c1->GlyphCount; i++) {
- if((TT_uint32_t)c1->GlyphArray[i] == g) {
- return i;
- }
- }
- return -1;
- }
- case 2: {
- TCoverageFormat2 *c2 = (TCoverageFormat2*)Coverage;
- for(i = 0; i < c2->RangeCount; i++) {
- TT_uint32_t s = c2->RangeRecord[i].Start;
- TT_uint32_t e = c2->RangeRecord[i].End;
- TT_uint32_t si = c2->RangeRecord[i].StartCoverageIndex;
- if (s <= g && g <= e) {
- return si + g - s;
- }
- }
- return -1;
- }
- }
- return -1;
-}
-bool CFX_CTTGSUBTable::Parse(
- FT_Bytes scriptlist,
- FT_Bytes featurelist,
- FT_Bytes lookuplist)
-{
- ParseScriptList(scriptlist, &ScriptList);
- ParseFeatureList(featurelist, &FeatureList);
- ParseLookupList(lookuplist, &LookupList);
- return true;
-}
-void CFX_CTTGSUBTable::ParseScriptList(FT_Bytes raw, struct TScriptList *rec)
-{
- int i;
- FT_Bytes sp = raw;
- rec->ScriptCount = GetUInt16(sp);
- if(rec->ScriptCount <= 0) {
- return;
- }
- rec->ScriptRecord = new struct TScriptRecord[rec->ScriptCount];
- for(i = 0; i < rec->ScriptCount; i++) {
- rec->ScriptRecord[i].ScriptTag = GetUInt32(sp);
- TT_uint16_t offset = GetUInt16(sp);
- ParseScript(
- &raw[offset],
- &rec->ScriptRecord[i].Script);
- }
-}
-void CFX_CTTGSUBTable::ParseScript(FT_Bytes raw, struct TScript *rec)
-{
- int i;
- FT_Bytes sp = raw;
- rec->DefaultLangSys = GetUInt16(sp);
- rec->LangSysCount = GetUInt16(sp);
- if(rec->LangSysCount <= 0) {
- return;
- }
- rec->LangSysRecord = new struct TLangSysRecord[rec->LangSysCount];
- for(i = 0; i < rec->LangSysCount; i++) {
- rec->LangSysRecord[i].LangSysTag = GetUInt32(sp);
- TT_uint16_t offset = GetUInt16(sp);
- ParseLangSys(
- &raw[offset],
- &rec->LangSysRecord[i].LangSys);
- }
-}
-void CFX_CTTGSUBTable::ParseLangSys(FT_Bytes raw, struct TLangSys *rec)
-{
- FT_Bytes sp = raw;
- rec->LookupOrder = GetUInt16(sp);
- rec->ReqFeatureIndex = GetUInt16(sp);
- rec->FeatureCount = GetUInt16(sp);
- if(rec->FeatureCount <= 0) {
- return;
- }
- rec->FeatureIndex = new TT_uint16_t[rec->FeatureCount];
- FXSYS_memset32(rec->FeatureIndex, 0, sizeof(TT_uint16_t) * rec->FeatureCount);
- for (int i = 0; i < rec->FeatureCount; ++i) {
- rec->FeatureIndex[i] = GetUInt16(sp);
- }
-}
-void CFX_CTTGSUBTable::ParseFeatureList(FT_Bytes raw, TFeatureList *rec)
-{
- int i;
- FT_Bytes sp = raw;
- rec->FeatureCount = GetUInt16(sp);
- if(rec->FeatureCount <= 0) {
- return;
- }
- rec->FeatureRecord = new struct TFeatureRecord[rec->FeatureCount];
- for(i = 0; i < rec->FeatureCount; i++) {
- rec->FeatureRecord[i].FeatureTag = GetUInt32(sp);
- TT_uint16_t offset = GetUInt16(sp);
- ParseFeature(
- &raw[offset],
- &rec->FeatureRecord[i].Feature);
- }
-}
-void CFX_CTTGSUBTable::ParseFeature(FT_Bytes raw, TFeature *rec)
-{
- int i;
- FT_Bytes sp = raw;
- rec->FeatureParams = GetUInt16(sp);
- rec->LookupCount = GetUInt16(sp);
- if(rec->LookupCount <= 0) {
- return;
- }
- rec->LookupListIndex = new TT_uint16_t[rec->LookupCount];
- for(i = 0; i < rec->LookupCount; i++) {
- rec->LookupListIndex[i] = GetUInt16(sp);
- }
-}
-void CFX_CTTGSUBTable::ParseLookupList(FT_Bytes raw, TLookupList *rec)
-{
- int i;
- FT_Bytes sp = raw;
- rec->LookupCount = GetUInt16(sp);
- if(rec->LookupCount <= 0) {
- return;
- }
- rec->Lookup = new struct TLookup[rec->LookupCount];
- for(i = 0; i < rec->LookupCount; i++) {
- TT_uint16_t offset = GetUInt16(sp);
- ParseLookup(
- &raw[offset],
- &rec->Lookup[i]);
- }
-}
-void CFX_CTTGSUBTable::ParseLookup(FT_Bytes raw, TLookup *rec)
-{
- int i;
- FT_Bytes sp = raw;
- rec->LookupType = GetUInt16(sp);
- rec->LookupFlag = GetUInt16(sp);
- rec->SubTableCount = GetUInt16(sp);
- if(rec->SubTableCount <= 0) {
- return;
- }
- rec->SubTable = new struct TSubTableBase*[rec->SubTableCount];
- for(i = 0; i < rec->SubTableCount; i++) {
- rec->SubTable[i] = NULL;
- }
- if(rec->LookupType != 1) {
- return;
- }
- for(i = 0; i < rec->SubTableCount; i++) {
- TT_uint16_t offset = GetUInt16(sp);
- ParseSingleSubst(
- &raw[offset],
- &rec->SubTable[i]);
- }
-}
-void CFX_CTTGSUBTable::ParseCoverage(FT_Bytes raw, TCoverageFormatBase **rec)
-{
- FT_Bytes sp = raw;
- TT_uint16_t Format = GetUInt16(sp);
- switch(Format) {
- case 1:
- *rec = new TCoverageFormat1();
- ParseCoverageFormat1(raw, (TCoverageFormat1*)*rec);
- break;
- case 2:
- *rec = new TCoverageFormat2();
- ParseCoverageFormat2(raw, (TCoverageFormat2*)*rec);
- break;
- }
-}
-void CFX_CTTGSUBTable::ParseCoverageFormat1(FT_Bytes raw, TCoverageFormat1 *rec)
-{
- int i;
- FT_Bytes sp = raw;
- GetUInt16(sp);
- rec->GlyphCount = GetUInt16(sp);
- if(rec->GlyphCount <= 0) {
- return;
- }
- rec->GlyphArray = new TT_uint16_t[rec->GlyphCount];
- for(i = 0; i < rec->GlyphCount; i++) {
- rec->GlyphArray[i] = GetUInt16(sp);
- }
-}
-void CFX_CTTGSUBTable::ParseCoverageFormat2(FT_Bytes raw, TCoverageFormat2 *rec)
-{
- int i;
- FT_Bytes sp = raw;
- GetUInt16(sp);
- rec->RangeCount = GetUInt16(sp);
- if(rec->RangeCount <= 0) {
- return;
- }
- rec->RangeRecord = new TRangeRecord[rec->RangeCount];
- for(i = 0; i < rec->RangeCount; i++) {
- rec->RangeRecord[i].Start = GetUInt16(sp);
- rec->RangeRecord[i].End = GetUInt16(sp);
- rec->RangeRecord[i].StartCoverageIndex = GetUInt16(sp);
- }
-}
-void CFX_CTTGSUBTable::ParseSingleSubst(FT_Bytes raw, TSubTableBase **rec)
-{
- FT_Bytes sp = raw;
- TT_uint16_t Format = GetUInt16(sp);
- switch(Format) {
- case 1:
- *rec = new TSingleSubstFormat1();
- ParseSingleSubstFormat1(raw, (TSingleSubstFormat1*)*rec);
- break;
- case 2:
- *rec = new TSingleSubstFormat2();
- ParseSingleSubstFormat2(raw, (TSingleSubstFormat2*)*rec);
- break;
- }
-}
-void CFX_CTTGSUBTable::ParseSingleSubstFormat1(FT_Bytes raw, TSingleSubstFormat1 *rec)
-{
- FT_Bytes sp = raw;
- GetUInt16(sp);
- TT_uint16_t offset = GetUInt16(sp);
- ParseCoverage(
- &raw[offset],
- &rec->Coverage);
- rec->DeltaGlyphID = GetInt16(sp);
-}
-void CFX_CTTGSUBTable::ParseSingleSubstFormat2(FT_Bytes raw, TSingleSubstFormat2 *rec)
-{
- int i;
- FT_Bytes sp = raw;
- GetUInt16(sp);
- TT_uint16_t offset = GetUInt16(sp);
- ParseCoverage(
- &raw[offset],
- &rec->Coverage);
- rec->GlyphCount = GetUInt16(sp);
- if(rec->GlyphCount <= 0) {
- return;
- }
- rec->Substitute = new TT_uint16_t[rec->GlyphCount];
- for(i = 0; i < rec->GlyphCount; i++) {
- rec->Substitute[i] = GetUInt16(sp);
- }
-}
-FX_BOOL CFX_GSUBTable::GetVerticalGlyph(FX_DWORD glyphnum, FX_DWORD* vglyphnum)
-{
- return m_GsubImp.GetVerticalGlyph(glyphnum, vglyphnum);
-}
-IFX_GSUBTable* FXGE_CreateGSUBTable(CFX_Font* pFont)
-{
- if (!pFont) {
- return NULL;
- }
- if (NULL == pFont->m_pGsubData) {
- unsigned long length = 0;
- int error = FXFT_Load_Sfnt_Table(pFont->m_Face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, NULL, &length);
- if (!error) {
- pFont->m_pGsubData = (unsigned char*)FX_Alloc(FX_BYTE, length);
- }
- if (!pFont->m_pGsubData) {
- return NULL;
- }
- }
- int error = FXFT_Load_Sfnt_Table(pFont->m_Face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, pFont->m_pGsubData, NULL);
- if (!error && pFont->m_pGsubData) {
- CFX_GSUBTable* pGsubTable = FX_NEW CFX_GSUBTable;
- if (!pGsubTable) {
- return NULL;
- }
- if (pGsubTable->m_GsubImp.LoadGSUBTable((FT_Bytes)pFont->m_pGsubData)) {
- return pGsubTable;
- }
- delete pGsubTable;
- }
- return NULL;
-}
+// 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 + +#include "../../../include/fxge/fx_ge.h" +#include "../../../include/fxge/fx_freetype.h" +#include "ttgsubtable.h" +CFX_GlyphMap::CFX_GlyphMap() +{ +} +CFX_GlyphMap::~CFX_GlyphMap() +{ +} +extern "C" { + static int _CompareInt(const void* p1, const void* p2) + { + return (*(FX_DWORD*)p1) - (*(FX_DWORD*)p2); + } +}; +struct _IntPair { + FX_INT32 key; + FX_INT32 value; +}; +void CFX_GlyphMap::SetAt(int key, int value) +{ + FX_DWORD count = m_Buffer.GetSize() / sizeof(_IntPair); + _IntPair* buf = (_IntPair*)m_Buffer.GetBuffer(); + _IntPair pair = {key, value}; + if (count == 0 || key > buf[count - 1].key) { + m_Buffer.AppendBlock(&pair, sizeof(_IntPair)); + return; + } + int low = 0, high = count - 1; + while (low <= high) { + int mid = (low + high) / 2; + if (buf[mid].key < key) { + low = mid + 1; + } else if (buf[mid].key > key) { + high = mid - 1; + } else { + buf[mid].value = value; + return; + } + } + m_Buffer.InsertBlock(low * sizeof(_IntPair), &pair, sizeof(_IntPair)); +} +FX_BOOL CFX_GlyphMap::Lookup(int key, int &value) +{ + FX_LPVOID pResult = FXSYS_bsearch(&key, m_Buffer.GetBuffer(), m_Buffer.GetSize() / sizeof(_IntPair), + sizeof(_IntPair), _CompareInt); + if (pResult == NULL) { + return FALSE; + } + value = ((FX_DWORD*)pResult)[1]; + return TRUE; +} +bool CFX_CTTGSUBTable::LoadGSUBTable(FT_Bytes gsub) +{ + header.Version = gsub[0] << 24 | gsub[1] << 16 | gsub[2] << 8 | gsub[3]; + if(header.Version != 0x00010000) { + return false; + } + header.ScriptList = gsub[4] << 8 | gsub[5]; + header.FeatureList = gsub[6] << 8 | gsub[7]; + header.LookupList = gsub[8] << 8 | gsub[9]; + return Parse( + &gsub[header.ScriptList], + &gsub[header.FeatureList], + &gsub[header.LookupList]); +} +bool CFX_CTTGSUBTable::GetVerticalGlyph(TT_uint32_t glyphnum, TT_uint32_t *vglyphnum) +{ + TT_uint32_t tag[] = { + (TT_uint8_t)'v' << 24 | + (TT_uint8_t)'r' << 16 | + (TT_uint8_t)'t' << 8 | + (TT_uint8_t)'2', + (TT_uint8_t)'v' << 24 | + (TT_uint8_t)'e' << 16 | + (TT_uint8_t)'r' << 8 | + (TT_uint8_t)'t', + }; + if (!m_bFeautureMapLoad) { + for (int i = 0; i < ScriptList.ScriptCount; i++) { + for (int j = 0; j < (ScriptList.ScriptRecord + i)->Script.LangSysCount; ++j) { + for (int k = 0; k < ((ScriptList.ScriptRecord + i)->Script.LangSysRecord + j)->LangSys.FeatureCount; ++k) { + FX_DWORD index = *(((ScriptList.ScriptRecord + i)->Script.LangSysRecord + j)->LangSys.FeatureIndex + k); + if (FeatureList.FeatureRecord[index].FeatureTag == tag[0] || FeatureList.FeatureRecord[index].FeatureTag == tag[1]) { + FX_DWORD value; + if (!m_featureMap.Lookup(index, value)) { + m_featureMap.SetAt(index, index); + } + } + } + } + } + if (!m_featureMap.GetStartPosition()) { + for (int i = 0; i < FeatureList.FeatureCount; i ++) { + if (FeatureList.FeatureRecord[i].FeatureTag == tag[0] || FeatureList.FeatureRecord[i].FeatureTag == tag[1]) { + FX_DWORD value; + if (!m_featureMap.Lookup(i, value)) { + m_featureMap.SetAt(i, i); + } + } + } + } + m_bFeautureMapLoad = TRUE; + } + FX_POSITION pos = m_featureMap.GetStartPosition(); + while (pos) { + FX_DWORD index, value; + m_featureMap.GetNextAssoc(pos, index, value); + if(GetVerticalGlyphSub(glyphnum, vglyphnum, &FeatureList.FeatureRecord[value].Feature)) { + return true; + } + } + return false; +} +bool CFX_CTTGSUBTable::GetVerticalGlyphSub( + TT_uint32_t glyphnum, + TT_uint32_t *vglyphnum, + struct TFeature *Feature) +{ + for(int i = 0; i < Feature->LookupCount; i++) { + int index = Feature->LookupListIndex[i]; + if(index < 0 || LookupList.LookupCount < index) { + continue; + } + if(LookupList.Lookup[index].LookupType == 1) { + if(GetVerticalGlyphSub2( + glyphnum, + vglyphnum, + &LookupList.Lookup[index])) { + return true; + } + } + } + return false; +} +bool CFX_CTTGSUBTable::GetVerticalGlyphSub2( + TT_uint32_t glyphnum, + TT_uint32_t *vglyphnum, + struct TLookup *Lookup) +{ + for(int i = 0; i < Lookup->SubTableCount; i++) { + switch(Lookup->SubTable[i]->SubstFormat) { + case 1: { + TSingleSubstFormat1 *tbl1 = (TSingleSubstFormat1*)Lookup->SubTable[i]; + if(GetCoverageIndex(tbl1->Coverage, glyphnum) >= 0) { + *vglyphnum = glyphnum + tbl1->DeltaGlyphID; + return true; + } + break; + } + case 2: { + TSingleSubstFormat2 *tbl2 = (TSingleSubstFormat2*)Lookup->SubTable[i]; + int index = -1; + index = GetCoverageIndex(tbl2->Coverage, glyphnum); + if(0 <= index && index < tbl2->GlyphCount) { + *vglyphnum = tbl2->Substitute[index]; + return true; + } + break; + } + } + } + return false; +} +int CFX_CTTGSUBTable::GetCoverageIndex(struct TCoverageFormatBase *Coverage, TT_uint32_t g) +{ + int i = 0; + if(Coverage == NULL) { + return -1; + } + switch(Coverage->CoverageFormat) { + case 1: { + TCoverageFormat1 *c1 = (TCoverageFormat1*)Coverage; + for(i = 0; i < c1->GlyphCount; i++) { + if((TT_uint32_t)c1->GlyphArray[i] == g) { + return i; + } + } + return -1; + } + case 2: { + TCoverageFormat2 *c2 = (TCoverageFormat2*)Coverage; + for(i = 0; i < c2->RangeCount; i++) { + TT_uint32_t s = c2->RangeRecord[i].Start; + TT_uint32_t e = c2->RangeRecord[i].End; + TT_uint32_t si = c2->RangeRecord[i].StartCoverageIndex; + if (s <= g && g <= e) { + return si + g - s; + } + } + return -1; + } + } + return -1; +} +bool CFX_CTTGSUBTable::Parse( + FT_Bytes scriptlist, + FT_Bytes featurelist, + FT_Bytes lookuplist) +{ + ParseScriptList(scriptlist, &ScriptList); + ParseFeatureList(featurelist, &FeatureList); + ParseLookupList(lookuplist, &LookupList); + return true; +} +void CFX_CTTGSUBTable::ParseScriptList(FT_Bytes raw, struct TScriptList *rec) +{ + int i; + FT_Bytes sp = raw; + rec->ScriptCount = GetUInt16(sp); + if(rec->ScriptCount <= 0) { + return; + } + rec->ScriptRecord = new struct TScriptRecord[rec->ScriptCount]; + for(i = 0; i < rec->ScriptCount; i++) { + rec->ScriptRecord[i].ScriptTag = GetUInt32(sp); + TT_uint16_t offset = GetUInt16(sp); + ParseScript( + &raw[offset], + &rec->ScriptRecord[i].Script); + } +} +void CFX_CTTGSUBTable::ParseScript(FT_Bytes raw, struct TScript *rec) +{ + int i; + FT_Bytes sp = raw; + rec->DefaultLangSys = GetUInt16(sp); + rec->LangSysCount = GetUInt16(sp); + if(rec->LangSysCount <= 0) { + return; + } + rec->LangSysRecord = new struct TLangSysRecord[rec->LangSysCount]; + for(i = 0; i < rec->LangSysCount; i++) { + rec->LangSysRecord[i].LangSysTag = GetUInt32(sp); + TT_uint16_t offset = GetUInt16(sp); + ParseLangSys( + &raw[offset], + &rec->LangSysRecord[i].LangSys); + } +} +void CFX_CTTGSUBTable::ParseLangSys(FT_Bytes raw, struct TLangSys *rec) +{ + FT_Bytes sp = raw; + rec->LookupOrder = GetUInt16(sp); + rec->ReqFeatureIndex = GetUInt16(sp); + rec->FeatureCount = GetUInt16(sp); + if(rec->FeatureCount <= 0) { + return; + } + rec->FeatureIndex = new TT_uint16_t[rec->FeatureCount]; + FXSYS_memset32(rec->FeatureIndex, 0, sizeof(TT_uint16_t) * rec->FeatureCount); + for (int i = 0; i < rec->FeatureCount; ++i) { + rec->FeatureIndex[i] = GetUInt16(sp); + } +} +void CFX_CTTGSUBTable::ParseFeatureList(FT_Bytes raw, TFeatureList *rec) +{ + int i; + FT_Bytes sp = raw; + rec->FeatureCount = GetUInt16(sp); + if(rec->FeatureCount <= 0) { + return; + } + rec->FeatureRecord = new struct TFeatureRecord[rec->FeatureCount]; + for(i = 0; i < rec->FeatureCount; i++) { + rec->FeatureRecord[i].FeatureTag = GetUInt32(sp); + TT_uint16_t offset = GetUInt16(sp); + ParseFeature( + &raw[offset], + &rec->FeatureRecord[i].Feature); + } +} +void CFX_CTTGSUBTable::ParseFeature(FT_Bytes raw, TFeature *rec) +{ + int i; + FT_Bytes sp = raw; + rec->FeatureParams = GetUInt16(sp); + rec->LookupCount = GetUInt16(sp); + if(rec->LookupCount <= 0) { + return; + } + rec->LookupListIndex = new TT_uint16_t[rec->LookupCount]; + for(i = 0; i < rec->LookupCount; i++) { + rec->LookupListIndex[i] = GetUInt16(sp); + } +} +void CFX_CTTGSUBTable::ParseLookupList(FT_Bytes raw, TLookupList *rec) +{ + int i; + FT_Bytes sp = raw; + rec->LookupCount = GetUInt16(sp); + if(rec->LookupCount <= 0) { + return; + } + rec->Lookup = new struct TLookup[rec->LookupCount]; + for(i = 0; i < rec->LookupCount; i++) { + TT_uint16_t offset = GetUInt16(sp); + ParseLookup( + &raw[offset], + &rec->Lookup[i]); + } +} +void CFX_CTTGSUBTable::ParseLookup(FT_Bytes raw, TLookup *rec) +{ + int i; + FT_Bytes sp = raw; + rec->LookupType = GetUInt16(sp); + rec->LookupFlag = GetUInt16(sp); + rec->SubTableCount = GetUInt16(sp); + if(rec->SubTableCount <= 0) { + return; + } + rec->SubTable = new struct TSubTableBase*[rec->SubTableCount]; + for(i = 0; i < rec->SubTableCount; i++) { + rec->SubTable[i] = NULL; + } + if(rec->LookupType != 1) { + return; + } + for(i = 0; i < rec->SubTableCount; i++) { + TT_uint16_t offset = GetUInt16(sp); + ParseSingleSubst( + &raw[offset], + &rec->SubTable[i]); + } +} +void CFX_CTTGSUBTable::ParseCoverage(FT_Bytes raw, TCoverageFormatBase **rec) +{ + FT_Bytes sp = raw; + TT_uint16_t Format = GetUInt16(sp); + switch(Format) { + case 1: + *rec = new TCoverageFormat1(); + ParseCoverageFormat1(raw, (TCoverageFormat1*)*rec); + break; + case 2: + *rec = new TCoverageFormat2(); + ParseCoverageFormat2(raw, (TCoverageFormat2*)*rec); + break; + } +} +void CFX_CTTGSUBTable::ParseCoverageFormat1(FT_Bytes raw, TCoverageFormat1 *rec) +{ + int i; + FT_Bytes sp = raw; + GetUInt16(sp); + rec->GlyphCount = GetUInt16(sp); + if(rec->GlyphCount <= 0) { + return; + } + rec->GlyphArray = new TT_uint16_t[rec->GlyphCount]; + for(i = 0; i < rec->GlyphCount; i++) { + rec->GlyphArray[i] = GetUInt16(sp); + } +} +void CFX_CTTGSUBTable::ParseCoverageFormat2(FT_Bytes raw, TCoverageFormat2 *rec) +{ + int i; + FT_Bytes sp = raw; + GetUInt16(sp); + rec->RangeCount = GetUInt16(sp); + if(rec->RangeCount <= 0) { + return; + } + rec->RangeRecord = new TRangeRecord[rec->RangeCount]; + for(i = 0; i < rec->RangeCount; i++) { + rec->RangeRecord[i].Start = GetUInt16(sp); + rec->RangeRecord[i].End = GetUInt16(sp); + rec->RangeRecord[i].StartCoverageIndex = GetUInt16(sp); + } +} +void CFX_CTTGSUBTable::ParseSingleSubst(FT_Bytes raw, TSubTableBase **rec) +{ + FT_Bytes sp = raw; + TT_uint16_t Format = GetUInt16(sp); + switch(Format) { + case 1: + *rec = new TSingleSubstFormat1(); + ParseSingleSubstFormat1(raw, (TSingleSubstFormat1*)*rec); + break; + case 2: + *rec = new TSingleSubstFormat2(); + ParseSingleSubstFormat2(raw, (TSingleSubstFormat2*)*rec); + break; + } +} +void CFX_CTTGSUBTable::ParseSingleSubstFormat1(FT_Bytes raw, TSingleSubstFormat1 *rec) +{ + FT_Bytes sp = raw; + GetUInt16(sp); + TT_uint16_t offset = GetUInt16(sp); + ParseCoverage( + &raw[offset], + &rec->Coverage); + rec->DeltaGlyphID = GetInt16(sp); +} +void CFX_CTTGSUBTable::ParseSingleSubstFormat2(FT_Bytes raw, TSingleSubstFormat2 *rec) +{ + int i; + FT_Bytes sp = raw; + GetUInt16(sp); + TT_uint16_t offset = GetUInt16(sp); + ParseCoverage( + &raw[offset], + &rec->Coverage); + rec->GlyphCount = GetUInt16(sp); + if(rec->GlyphCount <= 0) { + return; + } + rec->Substitute = new TT_uint16_t[rec->GlyphCount]; + for(i = 0; i < rec->GlyphCount; i++) { + rec->Substitute[i] = GetUInt16(sp); + } +} +FX_BOOL CFX_GSUBTable::GetVerticalGlyph(FX_DWORD glyphnum, FX_DWORD* vglyphnum) +{ + return m_GsubImp.GetVerticalGlyph(glyphnum, vglyphnum); +} +IFX_GSUBTable* FXGE_CreateGSUBTable(CFX_Font* pFont) +{ + if (!pFont) { + return NULL; + } + if (NULL == pFont->m_pGsubData) { + unsigned long length = 0; + int error = FXFT_Load_Sfnt_Table(pFont->m_Face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, NULL, &length); + if (!error) { + pFont->m_pGsubData = (unsigned char*)FX_Alloc(FX_BYTE, length); + } + if (!pFont->m_pGsubData) { + return NULL; + } + } + int error = FXFT_Load_Sfnt_Table(pFont->m_Face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, pFont->m_pGsubData, NULL); + if (!error && pFont->m_pGsubData) { + CFX_GSUBTable* pGsubTable = FX_NEW CFX_GSUBTable; + if (!pGsubTable) { + return NULL; + } + if (pGsubTable->m_GsubImp.LoadGSUBTable((FT_Bytes)pFont->m_pGsubData)) { + return pGsubTable; + } + delete pGsubTable; + } + return NULL; +} |