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Unified Diff: core/fpdfapi/fpdf_font/cpdf_cidfont.cpp

Issue 2392773003: Move core/fpdfapi/fpdf_font to core/fpdfapi/font (Closed)
Patch Set: Created 4 years, 2 months ago
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Index: core/fpdfapi/fpdf_font/cpdf_cidfont.cpp
diff --git a/core/fpdfapi/fpdf_font/cpdf_cidfont.cpp b/core/fpdfapi/fpdf_font/cpdf_cidfont.cpp
deleted file mode 100644
index cb21d2023ad11cade0f6eaf22ba15e619ceb1ccc..0000000000000000000000000000000000000000
--- 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;
-}
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