diff options
author | dsinclair <dsinclair@chromium.org> | 2016-10-04 11:08:49 -0700 |
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committer | Commit bot <commit-bot@chromium.org> | 2016-10-04 11:08:49 -0700 |
commit | bc5e6d289ed40efec2b0e03427e8fc2947bf53e3 (patch) | |
tree | fa1509c1fe1a46a6ebe8861768804883041973be /core/fpdfapi/fpdf_font/cpdf_cidfont.cpp | |
parent | 241543581696e996093bf0c2ae09ece6afe13ba2 (diff) | |
download | pdfium-bc5e6d289ed40efec2b0e03427e8fc2947bf53e3.tar.xz |
Move core/fpdfapi/fpdf_font to core/fpdfapi/font
BUG=pdfium:603
Review-Url: https://codereview.chromium.org/2392773003
Diffstat (limited to 'core/fpdfapi/fpdf_font/cpdf_cidfont.cpp')
-rw-r--r-- | core/fpdfapi/fpdf_font/cpdf_cidfont.cpp | 852 |
1 files changed, 0 insertions, 852 deletions
diff --git a/core/fpdfapi/fpdf_font/cpdf_cidfont.cpp b/core/fpdfapi/fpdf_font/cpdf_cidfont.cpp deleted file mode 100644 index cb21d2023a..0000000000 --- a/core/fpdfapi/fpdf_font/cpdf_cidfont.cpp +++ /dev/null @@ -1,852 +0,0 @@ -// Copyright 2016 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/cpdf_cidfont.h" - -#include <algorithm> -#include <vector> - -#include "core/fpdfapi/cmaps/cmap_int.h" -#include "core/fpdfapi/cpdf_modulemgr.h" -#include "core/fpdfapi/fpdf_font/cpdf_fontencoding.h" -#include "core/fpdfapi/fpdf_font/font_int.h" -#include "core/fpdfapi/fpdf_font/ttgsubtable.h" -#include "core/fpdfapi/fpdf_page/cpdf_pagemodule.h" -#include "core/fpdfapi/fpdf_parser/cpdf_array.h" -#include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h" -#include "core/fpdfapi/fpdf_parser/cpdf_stream_acc.h" -#include "third_party/base/numerics/safe_math.h" - -namespace { - -const uint16_t g_CharsetCPs[CIDSET_NUM_SETS] = {0, 936, 950, 932, 949, 1200}; - -const struct CIDTransform { - uint16_t cid; - uint8_t a; - uint8_t b; - uint8_t c; - uint8_t d; - uint8_t e; - uint8_t f; -} g_Japan1_VertCIDs[] = { - {97, 129, 0, 0, 127, 55, 0}, {7887, 127, 0, 0, 127, 76, 89}, - {7888, 127, 0, 0, 127, 79, 94}, {7889, 0, 129, 127, 0, 17, 127}, - {7890, 0, 129, 127, 0, 17, 127}, {7891, 0, 129, 127, 0, 17, 127}, - {7892, 0, 129, 127, 0, 17, 127}, {7893, 0, 129, 127, 0, 17, 127}, - {7894, 0, 129, 127, 0, 17, 127}, {7895, 0, 129, 127, 0, 17, 127}, - {7896, 0, 129, 127, 0, 17, 127}, {7897, 0, 129, 127, 0, 17, 127}, - {7898, 0, 129, 127, 0, 17, 127}, {7899, 0, 129, 127, 0, 17, 104}, - {7900, 0, 129, 127, 0, 17, 127}, {7901, 0, 129, 127, 0, 17, 104}, - {7902, 0, 129, 127, 0, 17, 127}, {7903, 0, 129, 127, 0, 17, 127}, - {7904, 0, 129, 127, 0, 17, 127}, {7905, 0, 129, 127, 0, 17, 114}, - {7906, 0, 129, 127, 0, 17, 127}, {7907, 0, 129, 127, 0, 17, 127}, - {7908, 0, 129, 127, 0, 17, 127}, {7909, 0, 129, 127, 0, 17, 127}, - {7910, 0, 129, 127, 0, 17, 127}, {7911, 0, 129, 127, 0, 17, 127}, - {7912, 0, 129, 127, 0, 17, 127}, {7913, 0, 129, 127, 0, 17, 127}, - {7914, 0, 129, 127, 0, 17, 127}, {7915, 0, 129, 127, 0, 17, 114}, - {7916, 0, 129, 127, 0, 17, 127}, {7917, 0, 129, 127, 0, 17, 127}, - {7918, 127, 0, 0, 127, 18, 25}, {7919, 127, 0, 0, 127, 18, 25}, - {7920, 127, 0, 0, 127, 18, 25}, {7921, 127, 0, 0, 127, 18, 25}, - {7922, 127, 0, 0, 127, 18, 25}, {7923, 127, 0, 0, 127, 18, 25}, - {7924, 127, 0, 0, 127, 18, 25}, {7925, 127, 0, 0, 127, 18, 25}, - {7926, 127, 0, 0, 127, 18, 25}, {7927, 127, 0, 0, 127, 18, 25}, - {7928, 127, 0, 0, 127, 18, 25}, {7929, 127, 0, 0, 127, 18, 25}, - {7930, 127, 0, 0, 127, 18, 25}, {7931, 127, 0, 0, 127, 18, 25}, - {7932, 127, 0, 0, 127, 18, 25}, {7933, 127, 0, 0, 127, 18, 25}, - {7934, 127, 0, 0, 127, 18, 25}, {7935, 127, 0, 0, 127, 18, 25}, - {7936, 127, 0, 0, 127, 18, 25}, {7937, 127, 0, 0, 127, 18, 25}, - {7938, 127, 0, 0, 127, 18, 25}, {7939, 127, 0, 0, 127, 18, 25}, - {8720, 0, 129, 127, 0, 19, 102}, {8721, 0, 129, 127, 0, 13, 127}, - {8722, 0, 129, 127, 0, 19, 108}, {8723, 0, 129, 127, 0, 19, 102}, - {8724, 0, 129, 127, 0, 19, 102}, {8725, 0, 129, 127, 0, 19, 102}, - {8726, 0, 129, 127, 0, 19, 102}, {8727, 0, 129, 127, 0, 19, 102}, - {8728, 0, 129, 127, 0, 19, 114}, {8729, 0, 129, 127, 0, 19, 114}, - {8730, 0, 129, 127, 0, 38, 108}, {8731, 0, 129, 127, 0, 13, 108}, - {8732, 0, 129, 127, 0, 19, 108}, {8733, 0, 129, 127, 0, 19, 108}, - {8734, 0, 129, 127, 0, 19, 108}, {8735, 0, 129, 127, 0, 19, 108}, - {8736, 0, 129, 127, 0, 19, 102}, {8737, 0, 129, 127, 0, 19, 102}, - {8738, 0, 129, 127, 0, 19, 102}, {8739, 0, 129, 127, 0, 19, 102}, - {8740, 0, 129, 127, 0, 19, 102}, {8741, 0, 129, 127, 0, 19, 102}, - {8742, 0, 129, 127, 0, 19, 102}, {8743, 0, 129, 127, 0, 19, 102}, - {8744, 0, 129, 127, 0, 19, 102}, {8745, 0, 129, 127, 0, 19, 102}, - {8746, 0, 129, 127, 0, 19, 114}, {8747, 0, 129, 127, 0, 19, 114}, - {8748, 0, 129, 127, 0, 19, 102}, {8749, 0, 129, 127, 0, 19, 102}, - {8750, 0, 129, 127, 0, 19, 102}, {8751, 0, 129, 127, 0, 19, 102}, - {8752, 0, 129, 127, 0, 19, 102}, {8753, 0, 129, 127, 0, 19, 102}, - {8754, 0, 129, 127, 0, 19, 102}, {8755, 0, 129, 127, 0, 19, 102}, - {8756, 0, 129, 127, 0, 19, 102}, {8757, 0, 129, 127, 0, 19, 102}, - {8758, 0, 129, 127, 0, 19, 102}, {8759, 0, 129, 127, 0, 19, 102}, - {8760, 0, 129, 127, 0, 19, 102}, {8761, 0, 129, 127, 0, 19, 102}, - {8762, 0, 129, 127, 0, 19, 102}, {8763, 0, 129, 127, 0, 19, 102}, - {8764, 0, 129, 127, 0, 19, 102}, {8765, 0, 129, 127, 0, 19, 102}, - {8766, 0, 129, 127, 0, 19, 102}, {8767, 0, 129, 127, 0, 19, 102}, - {8768, 0, 129, 127, 0, 19, 102}, {8769, 0, 129, 127, 0, 19, 102}, - {8770, 0, 129, 127, 0, 19, 102}, {8771, 0, 129, 127, 0, 19, 102}, - {8772, 0, 129, 127, 0, 19, 102}, {8773, 0, 129, 127, 0, 19, 102}, - {8774, 0, 129, 127, 0, 19, 102}, {8775, 0, 129, 127, 0, 19, 102}, - {8776, 0, 129, 127, 0, 19, 102}, {8777, 0, 129, 127, 0, 19, 102}, - {8778, 0, 129, 127, 0, 19, 102}, {8779, 0, 129, 127, 0, 19, 114}, - {8780, 0, 129, 127, 0, 19, 108}, {8781, 0, 129, 127, 0, 19, 114}, - {8782, 0, 129, 127, 0, 13, 114}, {8783, 0, 129, 127, 0, 19, 108}, - {8784, 0, 129, 127, 0, 13, 114}, {8785, 0, 129, 127, 0, 19, 108}, - {8786, 0, 129, 127, 0, 19, 108}, {8787, 0, 129, 127, 0, 19, 108}, - {8788, 0, 129, 127, 0, 19, 108}, {8789, 0, 129, 127, 0, 19, 108}, - {8790, 0, 129, 127, 0, 19, 108}, {8791, 0, 129, 127, 0, 19, 108}, - {8792, 0, 129, 127, 0, 19, 108}, {8793, 0, 129, 127, 0, 19, 108}, - {8794, 0, 129, 127, 0, 19, 108}, {8795, 0, 129, 127, 0, 19, 108}, - {8796, 0, 129, 127, 0, 19, 108}, {8797, 0, 129, 127, 0, 19, 108}, - {8798, 0, 129, 127, 0, 19, 108}, {8799, 0, 129, 127, 0, 19, 108}, - {8800, 0, 129, 127, 0, 19, 108}, {8801, 0, 129, 127, 0, 19, 108}, - {8802, 0, 129, 127, 0, 19, 108}, {8803, 0, 129, 127, 0, 19, 108}, - {8804, 0, 129, 127, 0, 19, 108}, {8805, 0, 129, 127, 0, 19, 108}, - {8806, 0, 129, 127, 0, 19, 108}, {8807, 0, 129, 127, 0, 19, 108}, - {8808, 0, 129, 127, 0, 19, 108}, {8809, 0, 129, 127, 0, 19, 108}, - {8810, 0, 129, 127, 0, 19, 108}, {8811, 0, 129, 127, 0, 19, 114}, - {8812, 0, 129, 127, 0, 19, 102}, {8813, 0, 129, 127, 0, 19, 114}, - {8814, 0, 129, 127, 0, 76, 102}, {8815, 0, 129, 127, 0, 13, 121}, - {8816, 0, 129, 127, 0, 19, 114}, {8817, 0, 129, 127, 0, 19, 127}, - {8818, 0, 129, 127, 0, 19, 114}, {8819, 0, 129, 127, 0, 218, 108}, -}; - -CPDF_FontGlobals* GetFontGlobals() { - return CPDF_ModuleMgr::Get()->GetPageModule()->GetFontGlobals(); -} - -#if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_ - -bool IsValidEmbeddedCharcodeFromUnicodeCharset(CIDSet charset) { - switch (charset) { - case CIDSET_GB1: - case CIDSET_CNS1: - case CIDSET_JAPAN1: - case CIDSET_KOREA1: - return true; - - default: - return false; - } -} - -FX_WCHAR EmbeddedUnicodeFromCharcode(const FXCMAP_CMap* pEmbedMap, - CIDSet charset, - uint32_t charcode) { - if (!IsValidEmbeddedCharcodeFromUnicodeCharset(charset)) - return 0; - - uint16_t cid = FPDFAPI_CIDFromCharCode(pEmbedMap, charcode); - const auto& codes = GetFontGlobals()->m_EmbeddedToUnicodes[charset]; - if (codes.m_pMap && cid && cid < codes.m_Count) - return codes.m_pMap[cid]; - return 0; -} - -uint32_t EmbeddedCharcodeFromUnicode(const FXCMAP_CMap* pEmbedMap, - CIDSet charset, - FX_WCHAR unicode) { - if (!IsValidEmbeddedCharcodeFromUnicodeCharset(charset)) - return 0; - - const auto& codes = GetFontGlobals()->m_EmbeddedToUnicodes[charset]; - const uint16_t* pCodes = codes.m_pMap; - if (!pCodes) - return 0; - - for (uint32_t i = 0; i < codes.m_Count; ++i) { - if (pCodes[i] == unicode) { - uint32_t CharCode = FPDFAPI_CharCodeFromCID(pEmbedMap, i); - if (CharCode) - return CharCode; - } - } - return 0; -} - -#endif // _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_ - -void FT_UseCIDCharmap(FXFT_Face face, int coding) { - int encoding; - switch (coding) { - case CIDCODING_GB: - encoding = FXFT_ENCODING_GB2312; - break; - case CIDCODING_BIG5: - encoding = FXFT_ENCODING_BIG5; - break; - case CIDCODING_JIS: - encoding = FXFT_ENCODING_SJIS; - break; - case CIDCODING_KOREA: - encoding = FXFT_ENCODING_JOHAB; - break; - default: - encoding = FXFT_ENCODING_UNICODE; - } - int err = FXFT_Select_Charmap(face, encoding); - if (err) - err = FXFT_Select_Charmap(face, FXFT_ENCODING_UNICODE); - if (err && FXFT_Get_Face_Charmaps(face)) - FXFT_Set_Charmap(face, *FXFT_Get_Face_Charmaps(face)); -} - -bool IsMetricForCID(const uint32_t* pEntry, uint16_t CID) { - return pEntry[0] <= CID && pEntry[1] >= CID; -} - -} // namespace - -CPDF_CIDFont::CPDF_CIDFont() - : m_pCMap(nullptr), - m_pCID2UnicodeMap(nullptr), - m_bCIDIsGID(false), - m_bAnsiWidthsFixed(false), - m_bAdobeCourierStd(false) { - for (size_t i = 0; i < FX_ArraySize(m_CharBBox); ++i) - m_CharBBox[i] = FX_RECT(-1, -1, -1, -1); -} - -CPDF_CIDFont::~CPDF_CIDFont() {} - -bool CPDF_CIDFont::IsCIDFont() const { - return true; -} - -const CPDF_CIDFont* CPDF_CIDFont::AsCIDFont() const { - return this; -} - -CPDF_CIDFont* CPDF_CIDFont::AsCIDFont() { - return this; -} - -uint16_t CPDF_CIDFont::CIDFromCharCode(uint32_t charcode) const { - return m_pCMap ? m_pCMap->CIDFromCharCode(charcode) - : static_cast<uint16_t>(charcode); -} - -bool CPDF_CIDFont::IsVertWriting() const { - return m_pCMap && m_pCMap->IsVertWriting(); -} - -CFX_WideString CPDF_CIDFont::UnicodeFromCharCode(uint32_t charcode) const { - CFX_WideString str = CPDF_Font::UnicodeFromCharCode(charcode); - if (!str.IsEmpty()) - return str; - FX_WCHAR ret = GetUnicodeFromCharCode(charcode); - return ret ? ret : CFX_WideString(); -} - -FX_WCHAR CPDF_CIDFont::GetUnicodeFromCharCode(uint32_t charcode) const { - switch (m_pCMap->m_Coding) { - case CIDCODING_UCS2: - case CIDCODING_UTF16: - return static_cast<FX_WCHAR>(charcode); - case CIDCODING_CID: - if (!m_pCID2UnicodeMap || !m_pCID2UnicodeMap->IsLoaded()) - return 0; - return m_pCID2UnicodeMap->UnicodeFromCID(static_cast<uint16_t>(charcode)); - } - if (m_pCID2UnicodeMap && m_pCID2UnicodeMap->IsLoaded() && m_pCMap->IsLoaded()) - return m_pCID2UnicodeMap->UnicodeFromCID(CIDFromCharCode(charcode)); - -#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ - FX_WCHAR unicode; - int charsize = 1; - if (charcode > 255) { - charcode = (charcode % 256) * 256 + (charcode / 256); - charsize = 2; - } - int ret = FXSYS_MultiByteToWideChar( - g_CharsetCPs[m_pCMap->m_Coding], 0, - reinterpret_cast<const FX_CHAR*>(&charcode), charsize, &unicode, 1); - return ret == 1 ? unicode : 0; -#else - if (!m_pCMap->m_pEmbedMap) - return 0; - return EmbeddedUnicodeFromCharcode(m_pCMap->m_pEmbedMap, m_pCMap->m_Charset, - charcode); -#endif -} - -uint32_t CPDF_CIDFont::CharCodeFromUnicode(FX_WCHAR unicode) const { - uint32_t charcode = CPDF_Font::CharCodeFromUnicode(unicode); - if (charcode) - return charcode; - switch (m_pCMap->m_Coding) { - case CIDCODING_UNKNOWN: - return 0; - case CIDCODING_UCS2: - case CIDCODING_UTF16: - return unicode; - case CIDCODING_CID: { - if (!m_pCID2UnicodeMap || !m_pCID2UnicodeMap->IsLoaded()) - return 0; - uint32_t CID = 0; - while (CID < 65536) { - FX_WCHAR this_unicode = - m_pCID2UnicodeMap->UnicodeFromCID(static_cast<uint16_t>(CID)); - if (this_unicode == unicode) - return CID; - CID++; - } - break; - } - } - - if (unicode < 0x80) - return static_cast<uint32_t>(unicode); - if (m_pCMap->m_Coding == CIDCODING_CID) - return 0; -#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ - uint8_t buffer[32]; - int ret = FXSYS_WideCharToMultiByte( - g_CharsetCPs[m_pCMap->m_Coding], 0, &unicode, 1, - reinterpret_cast<char*>(buffer), 4, nullptr, nullptr); - if (ret == 1) - return buffer[0]; - if (ret == 2) - return buffer[0] * 256 + buffer[1]; -#else - if (m_pCMap->m_pEmbedMap) { - return EmbeddedCharcodeFromUnicode(m_pCMap->m_pEmbedMap, m_pCMap->m_Charset, - unicode); - } -#endif - return 0; -} - -bool CPDF_CIDFont::Load() { - if (m_pFontDict->GetStringFor("Subtype") == "TrueType") { - LoadGB2312(); - return true; - } - - CPDF_Array* pFonts = m_pFontDict->GetArrayFor("DescendantFonts"); - if (!pFonts || pFonts->GetCount() != 1) - return false; - - CPDF_Dictionary* pCIDFontDict = pFonts->GetDictAt(0); - if (!pCIDFontDict) - return false; - - m_BaseFont = pCIDFontDict->GetStringFor("BaseFont"); - if ((m_BaseFont.Compare("CourierStd") == 0 || - m_BaseFont.Compare("CourierStd-Bold") == 0 || - m_BaseFont.Compare("CourierStd-BoldOblique") == 0 || - m_BaseFont.Compare("CourierStd-Oblique") == 0) && - !IsEmbedded()) { - m_bAdobeCourierStd = true; - } - CPDF_Dictionary* pFontDesc = pCIDFontDict->GetDictFor("FontDescriptor"); - if (pFontDesc) - LoadFontDescriptor(pFontDesc); - - CPDF_Object* pEncoding = m_pFontDict->GetDirectObjectFor("Encoding"); - if (!pEncoding) - return false; - - CFX_ByteString subtype = pCIDFontDict->GetStringFor("Subtype"); - m_bType1 = (subtype == "CIDFontType0"); - - CPDF_CMapManager& manager = GetFontGlobals()->m_CMapManager; - if (pEncoding->IsName()) { - CFX_ByteString cmap = pEncoding->GetString(); - bool bPromptCJK = m_pFontFile && m_bType1; - m_pCMap = manager.GetPredefinedCMap(cmap, bPromptCJK); - if (!m_pCMap) - return false; - } else if (CPDF_Stream* pStream = pEncoding->AsStream()) { - m_pCMap = new CPDF_CMap; - m_pAllocatedCMap.reset(m_pCMap); - CPDF_StreamAcc acc; - acc.LoadAllData(pStream, FALSE); - m_pCMap->LoadEmbedded(acc.GetData(), acc.GetSize()); - } else { - return false; - } - - m_Charset = m_pCMap->m_Charset; - if (m_Charset == CIDSET_UNKNOWN) { - CPDF_Dictionary* pCIDInfo = pCIDFontDict->GetDictFor("CIDSystemInfo"); - if (pCIDInfo) { - m_Charset = - CharsetFromOrdering(pCIDInfo->GetStringFor("Ordering").AsStringC()); - } - } - if (m_Charset != CIDSET_UNKNOWN) { - bool bPromptCJK = !m_pFontFile && (m_pCMap->m_Coding == CIDCODING_CID || - pCIDFontDict->KeyExist("W")); - m_pCID2UnicodeMap = manager.GetCID2UnicodeMap(m_Charset, bPromptCJK); - } - if (m_Font.GetFace()) { - if (m_bType1) - FXFT_Select_Charmap(m_Font.GetFace(), FXFT_ENCODING_UNICODE); - else - FT_UseCIDCharmap(m_Font.GetFace(), m_pCMap->m_Coding); - } - m_DefaultWidth = pCIDFontDict->GetIntegerFor("DW", 1000); - CPDF_Array* pWidthArray = pCIDFontDict->GetArrayFor("W"); - if (pWidthArray) - LoadMetricsArray(pWidthArray, m_WidthList, 1); - if (!IsEmbedded()) - LoadSubstFont(); - - if (m_pFontFile || (GetSubstFont()->m_SubstFlags & FXFONT_SUBST_EXACT)) { - CPDF_Object* pmap = pCIDFontDict->GetDirectObjectFor("CIDToGIDMap"); - if (pmap) { - if (CPDF_Stream* pStream = pmap->AsStream()) { - m_pStreamAcc.reset(new CPDF_StreamAcc); - m_pStreamAcc->LoadAllData(pStream, FALSE); - } else if (pmap->GetString() == "Identity") { -#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ - if (m_pFontFile) - m_bCIDIsGID = true; -#else - m_bCIDIsGID = true; -#endif - } - } - } - - CheckFontMetrics(); - if (IsVertWriting()) { - pWidthArray = pCIDFontDict->GetArrayFor("W2"); - if (pWidthArray) - LoadMetricsArray(pWidthArray, m_VertMetrics, 3); - CPDF_Array* pDefaultArray = pCIDFontDict->GetArrayFor("DW2"); - if (pDefaultArray) { - m_DefaultVY = pDefaultArray->GetIntegerAt(0); - m_DefaultW1 = pDefaultArray->GetIntegerAt(1); - } else { - m_DefaultVY = 880; - m_DefaultW1 = -1000; - } - } - return true; -} - -FX_RECT CPDF_CIDFont::GetCharBBox(uint32_t charcode) { - if (charcode < 256 && m_CharBBox[charcode].right != -1) - return m_CharBBox[charcode]; - - FX_RECT rect; - bool bVert = false; - int glyph_index = GlyphFromCharCode(charcode, &bVert); - FXFT_Face face = m_Font.GetFace(); - if (face) { - if (FXFT_Is_Face_Tricky(face)) { - int err = FXFT_Load_Glyph(face, glyph_index, - FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH); - if (!err) { - FXFT_BBox cbox; - FXFT_Glyph glyph; - err = FXFT_Get_Glyph(((FXFT_Face)face)->glyph, &glyph); - if (!err) { - FXFT_Glyph_Get_CBox(glyph, FXFT_GLYPH_BBOX_PIXELS, &cbox); - int pixel_size_x = ((FXFT_Face)face)->size->metrics.x_ppem; - int pixel_size_y = ((FXFT_Face)face)->size->metrics.y_ppem; - if (pixel_size_x == 0 || pixel_size_y == 0) { - rect = FX_RECT(cbox.xMin, cbox.yMax, cbox.xMax, cbox.yMin); - } else { - rect = FX_RECT(cbox.xMin * 1000 / pixel_size_x, - cbox.yMax * 1000 / pixel_size_y, - cbox.xMax * 1000 / pixel_size_x, - cbox.yMin * 1000 / pixel_size_y); - } - rect.top = std::min(rect.top, - static_cast<int>(FXFT_Get_Face_Ascender(face))); - rect.bottom = std::max( - rect.bottom, static_cast<int>(FXFT_Get_Face_Descender(face))); - FXFT_Done_Glyph(glyph); - } - } - } else { - int err = FXFT_Load_Glyph(face, glyph_index, FXFT_LOAD_NO_SCALE); - if (err == 0) { - rect = FX_RECT(TT2PDF(FXFT_Get_Glyph_HoriBearingX(face), face), - TT2PDF(FXFT_Get_Glyph_HoriBearingY(face), face), - TT2PDF(FXFT_Get_Glyph_HoriBearingX(face) + - FXFT_Get_Glyph_Width(face), - face), - TT2PDF(FXFT_Get_Glyph_HoriBearingY(face) - - FXFT_Get_Glyph_Height(face), - face)); - rect.top += rect.top / 64; - } - } - } - if (!m_pFontFile && m_Charset == CIDSET_JAPAN1) { - uint16_t CID = CIDFromCharCode(charcode); - const uint8_t* pTransform = GetCIDTransform(CID); - if (pTransform && !bVert) { - CFX_Matrix matrix(CIDTransformToFloat(pTransform[0]), - CIDTransformToFloat(pTransform[1]), - CIDTransformToFloat(pTransform[2]), - CIDTransformToFloat(pTransform[3]), - CIDTransformToFloat(pTransform[4]) * 1000, - CIDTransformToFloat(pTransform[5]) * 1000); - CFX_FloatRect rect_f(rect); - rect_f.Transform(&matrix); - rect = rect_f.GetOuterRect(); - } - } - if (charcode < 256) - m_CharBBox[charcode] = rect; - - return rect; -} - -int CPDF_CIDFont::GetCharWidthF(uint32_t charcode) { - if (charcode < 0x80 && m_bAnsiWidthsFixed) - return (charcode >= 32 && charcode < 127) ? 500 : 0; - - uint16_t cid = CIDFromCharCode(charcode); - int size = m_WidthList.GetSize(); - const uint32_t* pList = m_WidthList.GetData(); - for (int i = 0; i < size; i += 3) { - const uint32_t* pEntry = pList + i; - if (IsMetricForCID(pEntry, cid)) - return static_cast<int>(pEntry[2]); - } - return m_DefaultWidth; -} - -short CPDF_CIDFont::GetVertWidth(uint16_t CID) const { - uint32_t vertsize = m_VertMetrics.GetSize() / 5; - if (vertsize) { - const uint32_t* pTable = m_VertMetrics.GetData(); - for (uint32_t i = 0; i < vertsize; i++) { - const uint32_t* pEntry = pTable + (i * 5); - if (IsMetricForCID(pEntry, CID)) - return static_cast<short>(pEntry[2]); - } - } - return m_DefaultW1; -} - -void CPDF_CIDFont::GetVertOrigin(uint16_t CID, short& vx, short& vy) const { - uint32_t vertsize = m_VertMetrics.GetSize() / 5; - if (vertsize) { - const uint32_t* pTable = m_VertMetrics.GetData(); - for (uint32_t i = 0; i < vertsize; i++) { - const uint32_t* pEntry = pTable + (i * 5); - if (IsMetricForCID(pEntry, CID)) { - vx = static_cast<short>(pEntry[3]); - vy = static_cast<short>(pEntry[4]); - return; - } - } - } - uint32_t dwWidth = m_DefaultWidth; - int size = m_WidthList.GetSize(); - const uint32_t* pList = m_WidthList.GetData(); - for (int i = 0; i < size; i += 3) { - const uint32_t* pEntry = pList + i; - if (IsMetricForCID(pEntry, CID)) { - dwWidth = pEntry[2]; - break; - } - } - vx = static_cast<short>(dwWidth) / 2; - vy = m_DefaultVY; -} - -int CPDF_CIDFont::GetGlyphIndex(uint32_t unicode, bool* pVertGlyph) { - if (pVertGlyph) - *pVertGlyph = false; - - FXFT_Face face = m_Font.GetFace(); - int index = FXFT_Get_Char_Index(face, unicode); - if (unicode == 0x2502) - return index; - - if (!index || !IsVertWriting()) - return index; - - if (m_pTTGSUBTable) - return GetVerticalGlyph(index, pVertGlyph); - - if (!m_Font.GetSubData()) { - unsigned long length = 0; - int error = FXFT_Load_Sfnt_Table(face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, - nullptr, &length); - if (!error) - m_Font.SetSubData(FX_Alloc(uint8_t, length)); - } - int error = FXFT_Load_Sfnt_Table(face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, - m_Font.GetSubData(), nullptr); - if (error || !m_Font.GetSubData()) - return index; - - m_pTTGSUBTable.reset(new CFX_CTTGSUBTable); - m_pTTGSUBTable->LoadGSUBTable((FT_Bytes)m_Font.GetSubData()); - return GetVerticalGlyph(index, pVertGlyph); -} - -int CPDF_CIDFont::GetVerticalGlyph(int index, bool* pVertGlyph) { - uint32_t vindex = 0; - m_pTTGSUBTable->GetVerticalGlyph(index, &vindex); - if (!vindex) - return index; - - index = vindex; - if (pVertGlyph) - *pVertGlyph = true; - return index; -} - -int CPDF_CIDFont::GlyphFromCharCode(uint32_t charcode, bool* pVertGlyph) { - if (pVertGlyph) - *pVertGlyph = FALSE; - - if (!m_pFontFile && !m_pStreamAcc) { - uint16_t cid = CIDFromCharCode(charcode); - FX_WCHAR unicode = 0; - if (m_bCIDIsGID) { -#if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_ - return cid; -#else - if (m_Flags & PDFFONT_SYMBOLIC) - return cid; - - CFX_WideString uni_str = UnicodeFromCharCode(charcode); - if (uni_str.IsEmpty()) - return cid; - - unicode = uni_str.GetAt(0); -#endif - } else { - if (cid && m_pCID2UnicodeMap && m_pCID2UnicodeMap->IsLoaded()) - unicode = m_pCID2UnicodeMap->UnicodeFromCID(cid); - if (unicode == 0) - unicode = GetUnicodeFromCharCode(charcode); - if (unicode == 0) { - CFX_WideString unicode_str = UnicodeFromCharCode(charcode); - if (!unicode_str.IsEmpty()) - unicode = unicode_str.GetAt(0); - } - } - FXFT_Face face = m_Font.GetFace(); - if (unicode == 0) { - if (!m_bAdobeCourierStd) - return charcode ? static_cast<int>(charcode) : -1; - - charcode += 31; - bool bMSUnicode = FT_UseTTCharmap(face, 3, 1); - bool bMacRoman = !bMSUnicode && FT_UseTTCharmap(face, 1, 0); - int iBaseEncoding = PDFFONT_ENCODING_STANDARD; - if (bMSUnicode) - iBaseEncoding = PDFFONT_ENCODING_WINANSI; - else if (bMacRoman) - iBaseEncoding = PDFFONT_ENCODING_MACROMAN; - const FX_CHAR* name = GetAdobeCharName( - iBaseEncoding, std::vector<CFX_ByteString>(), charcode); - if (!name) - return charcode ? static_cast<int>(charcode) : -1; - - int index = 0; - uint16_t name_unicode = PDF_UnicodeFromAdobeName(name); - if (!name_unicode) - return charcode ? static_cast<int>(charcode) : -1; - - if (iBaseEncoding == PDFFONT_ENCODING_STANDARD) - return FXFT_Get_Char_Index(face, name_unicode); - - if (iBaseEncoding == PDFFONT_ENCODING_WINANSI) { - index = FXFT_Get_Char_Index(face, name_unicode); - } else { - ASSERT(iBaseEncoding == PDFFONT_ENCODING_MACROMAN); - uint32_t maccode = - FT_CharCodeFromUnicode(FXFT_ENCODING_APPLE_ROMAN, name_unicode); - index = maccode ? FXFT_Get_Char_Index(face, maccode) - : FXFT_Get_Name_Index(face, const_cast<char*>(name)); - } - if (index == 0 || index == 0xffff) - return charcode ? static_cast<int>(charcode) : -1; - return index; - } - if (m_Charset == CIDSET_JAPAN1) { - if (unicode == '\\') { - unicode = '/'; -#if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_ - } else if (unicode == 0xa5) { - unicode = 0x5c; -#endif - } - } - if (!face) - return unicode; - - int err = FXFT_Select_Charmap(face, FXFT_ENCODING_UNICODE); - if (err) { - int i; - for (i = 0; i < FXFT_Get_Face_CharmapCount(face); i++) { - uint32_t ret = FT_CharCodeFromUnicode( - FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[i]), - static_cast<FX_WCHAR>(charcode)); - if (ret == 0) - continue; - FXFT_Set_Charmap(face, FXFT_Get_Face_Charmaps(face)[i]); - unicode = static_cast<FX_WCHAR>(ret); - break; - } - if (i == FXFT_Get_Face_CharmapCount(face) && i) { - FXFT_Set_Charmap(face, FXFT_Get_Face_Charmaps(face)[0]); - unicode = static_cast<FX_WCHAR>(charcode); - } - } - if (FXFT_Get_Face_Charmap(face)) { - int index = GetGlyphIndex(unicode, pVertGlyph); - return index != 0 ? index : -1; - } - return unicode; - } - - if (!m_Font.GetFace()) - return -1; - - uint16_t cid = CIDFromCharCode(charcode); - if (!m_pStreamAcc) { - if (m_bType1) - return cid; - - if (m_pFontFile && !m_pCMap->m_pMapping) - return cid; - if (m_pCMap->m_Coding == CIDCODING_UNKNOWN || - !FXFT_Get_Face_Charmap(m_Font.GetFace())) { - return cid; - } - if (FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmap(m_Font.GetFace())) == - FXFT_ENCODING_UNICODE) { - CFX_WideString unicode_str = UnicodeFromCharCode(charcode); - if (unicode_str.IsEmpty()) - return -1; - - charcode = unicode_str.GetAt(0); - } - return GetGlyphIndex(charcode, pVertGlyph); - } - uint32_t byte_pos = cid * 2; - if (byte_pos + 2 > m_pStreamAcc->GetSize()) - return -1; - - const uint8_t* pdata = m_pStreamAcc->GetData() + byte_pos; - return pdata[0] * 256 + pdata[1]; -} - -uint32_t CPDF_CIDFont::GetNextChar(const FX_CHAR* pString, - int nStrLen, - int& offset) const { - return m_pCMap->GetNextChar(pString, nStrLen, offset); -} - -int CPDF_CIDFont::GetCharSize(uint32_t charcode) const { - return m_pCMap->GetCharSize(charcode); -} - -int CPDF_CIDFont::CountChar(const FX_CHAR* pString, int size) const { - return m_pCMap->CountChar(pString, size); -} - -int CPDF_CIDFont::AppendChar(FX_CHAR* str, uint32_t charcode) const { - return m_pCMap->AppendChar(str, charcode); -} - -bool CPDF_CIDFont::IsUnicodeCompatible() const { - if (m_pCID2UnicodeMap && m_pCID2UnicodeMap->IsLoaded() && m_pCMap->IsLoaded()) - return true; - return m_pCMap->m_Coding != CIDCODING_UNKNOWN; -} - -void CPDF_CIDFont::LoadSubstFont() { - pdfium::base::CheckedNumeric<int> safeStemV(m_StemV); - safeStemV *= 5; - m_Font.LoadSubst(m_BaseFont, !m_bType1, m_Flags, - safeStemV.ValueOrDefault(FXFONT_FW_NORMAL), m_ItalicAngle, - g_CharsetCPs[m_Charset], IsVertWriting()); -} - -void CPDF_CIDFont::LoadMetricsArray(CPDF_Array* pArray, - CFX_ArrayTemplate<uint32_t>& result, - int nElements) { - int width_status = 0; - int iCurElement = 0; - int first_code = 0; - int last_code = 0; - for (size_t i = 0; i < pArray->GetCount(); i++) { - CPDF_Object* pObj = pArray->GetDirectObjectAt(i); - if (!pObj) - continue; - - if (CPDF_Array* pObjArray = pObj->AsArray()) { - if (width_status != 1) - return; - - for (size_t j = 0; j < pObjArray->GetCount(); j += nElements) { - result.Add(first_code); - result.Add(first_code); - for (int k = 0; k < nElements; k++) - result.Add(pObjArray->GetIntegerAt(j + k)); - first_code++; - } - width_status = 0; - } else { - if (width_status == 0) { - first_code = pObj->GetInteger(); - width_status = 1; - } else if (width_status == 1) { - last_code = pObj->GetInteger(); - width_status = 2; - iCurElement = 0; - } else { - if (!iCurElement) { - result.Add(first_code); - result.Add(last_code); - } - result.Add(pObj->GetInteger()); - iCurElement++; - if (iCurElement == nElements) - width_status = 0; - } - } - } -} - -// static -FX_FLOAT CPDF_CIDFont::CIDTransformToFloat(uint8_t ch) { - return (ch < 128 ? ch : ch - 255) * (1.0f / 127); -} - -void CPDF_CIDFont::LoadGB2312() { - m_BaseFont = m_pFontDict->GetStringFor("BaseFont"); - CPDF_Dictionary* pFontDesc = m_pFontDict->GetDictFor("FontDescriptor"); - if (pFontDesc) - LoadFontDescriptor(pFontDesc); - - m_Charset = CIDSET_GB1; - m_bType1 = false; - CPDF_CMapManager& manager = GetFontGlobals()->m_CMapManager; - m_pCMap = manager.GetPredefinedCMap("GBK-EUC-H", false); - m_pCID2UnicodeMap = manager.GetCID2UnicodeMap(m_Charset, false); - if (!IsEmbedded()) - LoadSubstFont(); - - CheckFontMetrics(); - m_DefaultWidth = 1000; - m_bAnsiWidthsFixed = true; -} - -const uint8_t* CPDF_CIDFont::GetCIDTransform(uint16_t CID) const { - if (m_Charset != CIDSET_JAPAN1 || m_pFontFile) - return nullptr; - - const auto* pEnd = g_Japan1_VertCIDs + FX_ArraySize(g_Japan1_VertCIDs); - const auto* pTransform = std::lower_bound( - g_Japan1_VertCIDs, pEnd, CID, - [](const CIDTransform& entry, uint16_t cid) { return entry.cid < cid; }); - return (pTransform < pEnd && CID == pTransform->cid) ? &pTransform->a - : nullptr; -} |