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Diffstat (limited to 'core/fpdfapi/fpdf_font/ttgsubtable.cpp')
-rw-r--r--core/fpdfapi/fpdf_font/ttgsubtable.cpp502
1 files changed, 0 insertions, 502 deletions
diff --git a/core/fpdfapi/fpdf_font/ttgsubtable.cpp b/core/fpdfapi/fpdf_font/ttgsubtable.cpp
deleted file mode 100644
index dde7793050..0000000000
--- a/core/fpdfapi/fpdf_font/ttgsubtable.cpp
+++ /dev/null
@@ -1,502 +0,0 @@
-// 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 "core/fpdfapi/fpdf_font/ttgsubtable.h"
-
-#include "core/fxge/fx_freetype.h"
-#include "third_party/base/stl_util.h"
-
-CFX_GlyphMap::CFX_GlyphMap() {}
-
-CFX_GlyphMap::~CFX_GlyphMap() {}
-
-extern "C" {
-static int _CompareInt(const void* p1, const void* p2) {
- return (*(uint32_t*)p1) - (*(uint32_t*)p2);
-}
-};
-
-struct _IntPair {
- int32_t key;
- int32_t value;
-};
-
-void CFX_GlyphMap::SetAt(int key, int value) {
- uint32_t 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) {
- void* pResult = FXSYS_bsearch(&key, m_Buffer.GetBuffer(),
- m_Buffer.GetSize() / sizeof(_IntPair),
- sizeof(_IntPair), _CompareInt);
- if (!pResult) {
- return FALSE;
- }
- value = ((uint32_t*)pResult)[1];
- return TRUE;
-}
-
-CFX_CTTGSUBTable::CFX_CTTGSUBTable()
- : m_bFeautureMapLoad(FALSE), loaded(false) {}
-
-CFX_CTTGSUBTable::CFX_CTTGSUBTable(FT_Bytes gsub)
- : m_bFeautureMapLoad(FALSE), loaded(false) {
- LoadGSUBTable(gsub);
-}
-
-CFX_CTTGSUBTable::~CFX_CTTGSUBTable() {}
-
-bool CFX_CTTGSUBTable::IsOk() const {
- return loaded;
-}
-
-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(uint32_t glyphnum,
- uint32_t* vglyphnum) {
- uint32_t tag[] = {
- (uint8_t)'v' << 24 | (uint8_t)'r' << 16 | (uint8_t)'t' << 8 |
- (uint8_t)'2',
- (uint8_t)'v' << 24 | (uint8_t)'e' << 16 | (uint8_t)'r' << 8 |
- (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) {
- const auto& record = ScriptList.ScriptRecord[i].Script.LangSysRecord[j];
- for (int k = 0; k < record.LangSys.FeatureCount; ++k) {
- uint32_t index = record.LangSys.FeatureIndex[k];
- if (FeatureList.FeatureRecord[index].FeatureTag == tag[0] ||
- FeatureList.FeatureRecord[index].FeatureTag == tag[1]) {
- if (!pdfium::ContainsKey(m_featureMap, index)) {
- m_featureMap[index] = index;
- }
- }
- }
- }
- }
- if (m_featureMap.empty()) {
- for (int i = 0; i < FeatureList.FeatureCount; i++) {
- if (FeatureList.FeatureRecord[i].FeatureTag == tag[0] ||
- FeatureList.FeatureRecord[i].FeatureTag == tag[1]) {
- m_featureMap[i] = i;
- }
- }
- }
- m_bFeautureMapLoad = TRUE;
- }
- for (const auto& pair : m_featureMap) {
- if (GetVerticalGlyphSub(glyphnum, vglyphnum,
- &FeatureList.FeatureRecord[pair.second].Feature)) {
- return true;
- }
- }
- return false;
-}
-
-bool CFX_CTTGSUBTable::GetVerticalGlyphSub(uint32_t glyphnum,
- uint32_t* vglyphnum,
- TFeature* Feature) const {
- 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(uint32_t glyphnum,
- uint32_t* vglyphnum,
- TLookup* Lookup) const {
- 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.get(), glyphnum) >= 0) {
- *vglyphnum = glyphnum + tbl1->DeltaGlyphID;
- return true;
- }
- break;
- }
- case 2: {
- TSingleSubstFormat2* tbl2 = (TSingleSubstFormat2*)Lookup->SubTable[i];
- int index = -1;
- index = GetCoverageIndex(tbl2->Coverage.get(), glyphnum);
- if (0 <= index && index < tbl2->GlyphCount) {
- *vglyphnum = tbl2->Substitute[index];
- return true;
- }
- break;
- }
- }
- }
- return false;
-}
-
-int CFX_CTTGSUBTable::GetCoverageIndex(TCoverageFormatBase* Coverage,
- uint32_t g) const {
- int i = 0;
- if (!Coverage) {
- return -1;
- }
- switch (Coverage->CoverageFormat) {
- case 1: {
- TCoverageFormat1* c1 = (TCoverageFormat1*)Coverage;
- for (i = 0; i < c1->GlyphCount; i++) {
- if ((uint32_t)c1->GlyphArray[i] == g) {
- return i;
- }
- }
- return -1;
- }
- case 2: {
- TCoverageFormat2* c2 = (TCoverageFormat2*)Coverage;
- for (i = 0; i < c2->RangeCount; i++) {
- uint32_t s = c2->RangeRecord[i].Start;
- uint32_t e = c2->RangeRecord[i].End;
- uint32_t si = c2->RangeRecord[i].StartCoverageIndex;
- if (s <= g && g <= e) {
- return si + g - s;
- }
- }
- return -1;
- }
- }
- return -1;
-}
-
-uint8_t CFX_CTTGSUBTable::GetUInt8(FT_Bytes& p) const {
- uint8_t ret = p[0];
- p += 1;
- return ret;
-}
-
-int16_t CFX_CTTGSUBTable::GetInt16(FT_Bytes& p) const {
- uint16_t ret = p[0] << 8 | p[1];
- p += 2;
- return *(int16_t*)&ret;
-}
-
-uint16_t CFX_CTTGSUBTable::GetUInt16(FT_Bytes& p) const {
- uint16_t ret = p[0] << 8 | p[1];
- p += 2;
- return ret;
-}
-
-int32_t CFX_CTTGSUBTable::GetInt32(FT_Bytes& p) const {
- uint32_t ret = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
- p += 4;
- return *(int32_t*)&ret;
-}
-
-uint32_t CFX_CTTGSUBTable::GetUInt32(FT_Bytes& p) const {
- uint32_t ret = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
- p += 4;
- return ret;
-}
-
-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, TScriptList* rec) {
- int i;
- FT_Bytes sp = raw;
- rec->ScriptCount = GetUInt16(sp);
- if (rec->ScriptCount <= 0) {
- return;
- }
- rec->ScriptRecord.reset(new TScriptRecord[rec->ScriptCount]);
- for (i = 0; i < rec->ScriptCount; i++) {
- rec->ScriptRecord[i].ScriptTag = GetUInt32(sp);
- uint16_t offset = GetUInt16(sp);
- ParseScript(&raw[offset], &rec->ScriptRecord[i].Script);
- }
-}
-
-void CFX_CTTGSUBTable::ParseScript(FT_Bytes raw, TScript* rec) {
- int i;
- FT_Bytes sp = raw;
- rec->DefaultLangSys = GetUInt16(sp);
- rec->LangSysCount = GetUInt16(sp);
- if (rec->LangSysCount <= 0) {
- return;
- }
- rec->LangSysRecord.reset(new TLangSysRecord[rec->LangSysCount]);
- for (i = 0; i < rec->LangSysCount; i++) {
- rec->LangSysRecord[i].LangSysTag = GetUInt32(sp);
- uint16_t offset = GetUInt16(sp);
- ParseLangSys(&raw[offset], &rec->LangSysRecord[i].LangSys);
- }
-}
-
-void CFX_CTTGSUBTable::ParseLangSys(FT_Bytes raw, 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.reset(new uint16_t[rec->FeatureCount]);
- FXSYS_memset(rec->FeatureIndex.get(), 0,
- sizeof(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.reset(new TFeatureRecord[rec->FeatureCount]);
- for (i = 0; i < rec->FeatureCount; i++) {
- rec->FeatureRecord[i].FeatureTag = GetUInt32(sp);
- 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.reset(new 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.reset(new TLookup[rec->LookupCount]);
- for (i = 0; i < rec->LookupCount; i++) {
- 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.reset(new TSubTableBase*[rec->SubTableCount]);
- for (i = 0; i < rec->SubTableCount; i++) {
- rec->SubTable[i] = nullptr;
- }
- if (rec->LookupType != 1) {
- return;
- }
- for (i = 0; i < rec->SubTableCount; i++) {
- uint16_t offset = GetUInt16(sp);
- ParseSingleSubst(&raw[offset], &rec->SubTable[i]);
- }
-}
-
-CFX_CTTGSUBTable::TCoverageFormatBase* CFX_CTTGSUBTable::ParseCoverage(
- FT_Bytes raw) {
- FT_Bytes sp = raw;
- uint16_t format = GetUInt16(sp);
- TCoverageFormatBase* rec = nullptr;
- if (format == 1) {
- rec = new TCoverageFormat1();
- ParseCoverageFormat1(raw, static_cast<TCoverageFormat1*>(rec));
- } else if (format == 2) {
- rec = new TCoverageFormat2();
- ParseCoverageFormat2(raw, static_cast<TCoverageFormat2*>(rec));
- }
- return rec;
-}
-
-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.reset(new 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.reset(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;
- 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);
- uint16_t offset = GetUInt16(sp);
- rec->Coverage.reset(ParseCoverage(&raw[offset]));
- rec->DeltaGlyphID = GetInt16(sp);
-}
-
-void CFX_CTTGSUBTable::ParseSingleSubstFormat2(FT_Bytes raw,
- TSingleSubstFormat2* rec) {
- int i;
- FT_Bytes sp = raw;
- GetUInt16(sp);
- uint16_t offset = GetUInt16(sp);
- rec->Coverage.reset(ParseCoverage(&raw[offset]));
- rec->GlyphCount = GetUInt16(sp);
- if (rec->GlyphCount <= 0) {
- return;
- }
- rec->Substitute.reset(new uint16_t[rec->GlyphCount]);
- for (i = 0; i < rec->GlyphCount; i++) {
- rec->Substitute[i] = GetUInt16(sp);
- }
-}
-
-CFX_CTTGSUBTable::TCoverageFormat1::TCoverageFormat1()
- : TCoverageFormatBase(1), GlyphCount(0) {}
-
-CFX_CTTGSUBTable::TCoverageFormat1::~TCoverageFormat1() {}
-
-CFX_CTTGSUBTable::TRangeRecord::TRangeRecord()
- : Start(0), End(0), StartCoverageIndex(0) {}
-
-CFX_CTTGSUBTable::TCoverageFormat2::TCoverageFormat2()
- : TCoverageFormatBase(2), RangeCount(0) {}
-
-CFX_CTTGSUBTable::TCoverageFormat2::~TCoverageFormat2() {}
-
-CFX_CTTGSUBTable::TSingleSubstFormat1::TSingleSubstFormat1()
- : TSubTableBase(1), DeltaGlyphID(0) {}
-
-CFX_CTTGSUBTable::TSingleSubstFormat1::~TSingleSubstFormat1() {}
-
-CFX_CTTGSUBTable::TSingleSubstFormat2::TSingleSubstFormat2()
- : TSubTableBase(2), GlyphCount(0) {}
-
-CFX_CTTGSUBTable::TSingleSubstFormat2::~TSingleSubstFormat2() {}
-
-CFX_CTTGSUBTable::TLookup::TLookup()
- : LookupType(0), LookupFlag(0), SubTableCount(0) {}
-
-CFX_CTTGSUBTable::TLookup::~TLookup() {
- if (SubTable) {
- for (int i = 0; i < SubTableCount; ++i)
- delete SubTable[i];
- }
-}
-
-CFX_CTTGSUBTable::TScript::TScript() : DefaultLangSys(0), LangSysCount(0) {}
-
-CFX_CTTGSUBTable::TScript::~TScript() {}
-
-CFX_CTTGSUBTable::TScriptList::TScriptList() : ScriptCount(0) {}
-
-CFX_CTTGSUBTable::TScriptList::~TScriptList() {}
-
-CFX_CTTGSUBTable::TFeature::TFeature() : FeatureParams(0), LookupCount(0) {}
-
-CFX_CTTGSUBTable::TFeature::~TFeature() {}
-
-CFX_CTTGSUBTable::TFeatureList::TFeatureList() : FeatureCount(0) {}
-
-CFX_CTTGSUBTable::TFeatureList::~TFeatureList() {}
-
-CFX_CTTGSUBTable::TLookupList::TLookupList() : LookupCount(0) {}
-
-CFX_CTTGSUBTable::TLookupList::~TLookupList() {}
-
-CFX_CTTGSUBTable::TLangSys::TLangSys()
- : LookupOrder(0), ReqFeatureIndex(0), FeatureCount(0) {}
-
-CFX_CTTGSUBTable::TLangSys::~TLangSys() {}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-03 10:20:45 +0000