diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_font/ttgsubtable.cpp')
-rw-r--r-- | core/src/fpdfapi/fpdf_font/ttgsubtable.cpp | 415 |
1 files changed, 0 insertions, 415 deletions
diff --git a/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp b/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp deleted file mode 100644 index 03a0028e10..0000000000 --- a/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp +++ /dev/null @@ -1,415 +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/src/fpdfapi/fpdf_font/ttgsubtable.h" - -#include <memory> - -#include "core/include/fxge/fx_freetype.h" -#include "core/include/fxge/fx_ge.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 (*(FX_DWORD*)p1) - (*(FX_DWORD*)p2); -} -}; -struct _IntPair { - int32_t key; - int32_t 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) { - void* pResult = FXSYS_bsearch(&key, m_Buffer.GetBuffer(), - m_Buffer.GetSize() / sizeof(_IntPair), - sizeof(_IntPair), _CompareInt); - if (!pResult) { - 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(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) { - 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]) { - 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, - 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(uint32_t glyphnum, - 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, - uint32_t g) { - 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; -} -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); - 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); - 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 uint16_t[rec->FeatureCount]; - FXSYS_memset(rec->FeatureIndex, 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 = new struct 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 = 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 = new struct 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 = 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++) { - uint16_t offset = GetUInt16(sp); - ParseSingleSubst(&raw[offset], &rec->SubTable[i]); - } -} -void CFX_CTTGSUBTable::ParseCoverage(FT_Bytes raw, TCoverageFormatBase** rec) { - FT_Bytes sp = raw; - 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 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; - 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); - 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); - uint16_t offset = GetUInt16(sp); - ParseCoverage(&raw[offset], &rec->Coverage); - rec->GlyphCount = GetUInt16(sp); - if (rec->GlyphCount <= 0) { - return; - } - rec->Substitute = new 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); -} -// static -IFX_GSUBTable* IFX_GSUBTable::Create(CFX_Font* pFont) { - if (!pFont) { - return NULL; - } - if (!pFont->GetSubData()) { - unsigned long length = 0; - int error = FXFT_Load_Sfnt_Table( - pFont->GetFace(), FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, NULL, &length); - if (!error) { - pFont->SetSubData(FX_Alloc(uint8_t, length)); - } - if (!pFont->GetSubData()) { - return NULL; - } - } - int error = - FXFT_Load_Sfnt_Table(pFont->GetFace(), FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, - pFont->GetSubData(), NULL); - if (!error && pFont->GetSubData()) { - std::unique_ptr<CFX_GSUBTable> pGsubTable(new CFX_GSUBTable); - if (pGsubTable->m_GsubImp.LoadGSUBTable((FT_Bytes)pFont->GetSubData())) { - return pGsubTable.release(); - } - } - return NULL; -} |