Cleanup font defines

Use methods to match font information; cleanup some font code.

Change-Id: Ib99c1e466e56723cb5d264d49e1caf9bbbc0daed
Reviewed-on: https://pdfium-review.googlesource.com/15072
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

12 files changed, 155 insertions, 122 deletions

diff --git a/core/fpdfapi/font/cpdf_cidfont.cpp b/core/fpdfapi/font/cpdf_cidfont.cpp
index 611afc0787..0140cc8a23 100644
--- a/core/fpdfapi/font/cpdf_cidfont.cpp
+++ b/core/fpdfapi/font/cpdf_cidfont.cpp
@@ -618,7 +618,7 @@ int CPDF_CIDFont::GlyphFromCharCode(uint32_t charcode, bool* pVertGlyph) {
 #if _FX_PLATFORM_ != _FX_PLATFORM_APPLE_
       return cid;
 #else
-      if (m_Flags & FXFONT_SYMBOLIC)
+      if (FontStyleIsSymbolic(m_Flags))
         return cid;
 
       WideString uni_str = UnicodeFromCharCode(charcode);
diff --git a/core/fpdfapi/font/cpdf_font.cpp b/core/fpdfapi/font/cpdf_font.cpp
index 9aaaa27b2e..12e5aaf3a8 100644
--- a/core/fpdfapi/font/cpdf_font.cpp
+++ b/core/fpdfapi/font/cpdf_font.cpp
@@ -375,7 +375,7 @@ void CPDF_Font::LoadPDFEncoding(CPDF_Object* pEncoding,
         iBaseEncoding == PDFFONT_ENCODING_ZAPFDINGBATS) {
       return;
     }
-    if ((m_Flags & FXFONT_SYMBOLIC) && m_BaseFont == "Symbol") {
+    if (FontStyleIsSymbolic(m_Flags) && m_BaseFont == "Symbol") {
       if (!bTrueType)
         iBaseEncoding = PDFFONT_ENCODING_ADOBE_SYMBOL;
       return;
diff --git a/core/fpdfapi/font/cpdf_simplefont.cpp b/core/fpdfapi/font/cpdf_simplefont.cpp
index ccf514db07..92965b0948 100644
--- a/core/fpdfapi/font/cpdf_simplefont.cpp
+++ b/core/fpdfapi/font/cpdf_simplefont.cpp
@@ -134,7 +134,7 @@ bool CPDF_SimpleFont::LoadCommon() {
   } else {
     LoadSubstFont();
   }
-  if (!(m_Flags & FXFONT_SYMBOLIC))
+  if (!FontStyleIsSymbolic(m_Flags))
     m_BaseEncoding = PDFFONT_ENCODING_STANDARD;
   CPDF_Object* pEncoding = m_pFontDict->GetDirectObjectFor("Encoding");
   LoadPDFEncoding(pEncoding, m_BaseEncoding, &m_CharNames, !!m_pFontFile,
@@ -144,7 +144,7 @@ bool CPDF_SimpleFont::LoadCommon() {
   if (!m_Font.GetFace())
     return true;
 
-  if (m_Flags & FXFONT_ALLCAP) {
+  if (FontStyleIsAllCaps(m_Flags)) {
     unsigned char kLowercases[][2] = {{'a', 'z'}, {0xe0, 0xf6}, {0xf8, 0xfd}};
     for (size_t range = 0; range < FX_ArraySize(kLowercases); ++range) {
       const auto& lower = kLowercases[range];
@@ -166,7 +166,7 @@ bool CPDF_SimpleFont::LoadCommon() {
 }
 
 void CPDF_SimpleFont::LoadSubstFont() {
-  if (!m_bUseFontWidth && !(m_Flags & FXFONT_FIXED_PITCH)) {
+  if (!m_bUseFontWidth && !FontStyleIsFixedPitch(m_Flags)) {
     int width = 0, i;
     for (i = 0; i < 256; i++) {
       if (m_CharWidth[i] == 0 || m_CharWidth[i] == 0xffff)
diff --git a/core/fpdfapi/font/cpdf_truetypefont.cpp b/core/fpdfapi/font/cpdf_truetypefont.cpp
index a0542ecba4..91c238a1b4 100644
--- a/core/fpdfapi/font/cpdf_truetypefont.cpp
+++ b/core/fpdfapi/font/cpdf_truetypefont.cpp
@@ -41,7 +41,7 @@ void CPDF_TrueTypeFont::LoadGlyphMap() {
   if (m_pFontFile && m_Font.GetFace()->num_charmaps > 0 &&
       (baseEncoding == PDFFONT_ENCODING_MACROMAN ||
        baseEncoding == PDFFONT_ENCODING_WINANSI) &&
-      (m_Flags & FXFONT_SYMBOLIC)) {
+      FontStyleIsSymbolic(m_Flags)) {
     bool bSupportWin = false;
     bool bSupportMac = false;
     for (int i = 0; i < FXFT_Get_Face_CharmapCount(m_Font.GetFace()); i++) {
@@ -64,7 +64,7 @@ void CPDF_TrueTypeFont::LoadGlyphMap() {
   if (((baseEncoding == PDFFONT_ENCODING_MACROMAN ||
         baseEncoding == PDFFONT_ENCODING_WINANSI) &&
        m_CharNames.empty()) ||
-      (m_Flags & FXFONT_NONSYMBOLIC)) {
+      FontStyleIsNonSymbolic(m_Flags)) {
     if (!FXFT_Has_Glyph_Names(m_Font.GetFace()) &&
         (!m_Font.GetFace()->num_charmaps || !m_Font.GetFace()->charmaps)) {
       int nStartChar = m_pFontDict->GetIntegerFor("FirstChar");
@@ -83,7 +83,7 @@ void CPDF_TrueTypeFont::LoadGlyphMap() {
     bool bMacRoman = false;
     bool bMSSymbol = false;
     if (!bMSUnicode) {
-      if (m_Flags & FXFONT_NONSYMBOLIC) {
+      if (FontStyleIsNonSymbolic(m_Flags)) {
         bMacRoman = FT_UseTTCharmap(m_Font.GetFace(), 1, 0);
         bMSSymbol = !bMacRoman && FT_UseTTCharmap(m_Font.GetFace(), 3, 0);
       } else {
diff --git a/core/fpdfapi/font/cpdf_type1font.cpp b/core/fpdfapi/font/cpdf_type1font.cpp
index 296351fc82..9975943d9a 100644
--- a/core/fpdfapi/font/cpdf_type1font.cpp
+++ b/core/fpdfapi/font/cpdf_type1font.cpp
@@ -93,7 +93,7 @@ bool CPDF_Type1Font::Load() {
       m_BaseEncoding = PDFFONT_ENCODING_ADOBE_SYMBOL;
     else if (m_Base14Font == 13)
       m_BaseEncoding = PDFFONT_ENCODING_ZAPFDINGBATS;
-    else if (m_Flags & FXFONT_NONSYMBOLIC)
+    else if (FontStyleIsNonSymbolic(m_Flags))
       m_BaseEncoding = PDFFONT_ENCODING_STANDARD;
   }
   return LoadCommon();
@@ -188,7 +188,7 @@ void CPDF_Type1Font::LoadGlyphMap() {
   FT_UseType1Charmap(m_Font.GetFace());
 #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_
   if (bCoreText) {
-    if (m_Flags & FXFONT_SYMBOLIC) {
+    if (FontStyleIsSymbolic(m_Flags)) {
       for (int charcode = 0; charcode < 256; charcode++) {
         const char* name =
             GetAdobeCharName(m_BaseEncoding, m_CharNames, charcode);
@@ -255,7 +255,7 @@ void CPDF_Type1Font::LoadGlyphMap() {
     return;
   }
 #endif  // _FX_PLATFORM_ == _FX_PLATFORM_APPLE_
-  if (m_Flags & FXFONT_SYMBOLIC) {
+  if (FontStyleIsSymbolic(m_Flags)) {
     for (int charcode = 0; charcode < 256; charcode++) {
       const char* name =
           GetAdobeCharName(m_BaseEncoding, m_CharNames, charcode);
diff --git a/core/fxge/android/cfpf_skiafontmgr.cpp b/core/fxge/android/cfpf_skiafontmgr.cpp
index 214e718e0b..d8b751d9b2 100644
--- a/core/fxge/android/cfpf_skiafontmgr.cpp
+++ b/core/fxge/android/cfpf_skiafontmgr.cpp
@@ -176,11 +176,11 @@ uint32_t FPF_SKIAGetFamilyHash(const ByteStringView& bsFamily,
                                uint32_t dwStyle,
                                uint8_t uCharset) {
   ByteString bsFont(bsFamily);
-  if (dwStyle & FXFONT_BOLD)
+  if (FontStyleIsBold(dwStyle))
     bsFont += "Bold";
-  if (dwStyle & FXFONT_ITALIC)
+  if (FontStyleIsItalic(dwStyle))
     bsFont += "Italic";
-  if (dwStyle & FXFONT_SERIF)
+  if (FontStyleIsSerif(dwStyle))
     bsFont += "Serif";
   bsFont += uCharset;
   return FPF_GetHashCode_StringA(bsFont.c_str(), bsFont.GetLength());
@@ -317,17 +317,17 @@ CFPF_SkiaFont* CFPF_SkiaFontMgr::CreateFont(const ByteStringView& bsFamilyname,
     if (dwFaceName == dwSysFontName)
       nFind += FPF_SKIAMATCHWEIGHT_NAME1;
     bool bMatchedName = (nFind == FPF_SKIAMATCHWEIGHT_NAME1);
-    if ((dwStyle & FXFONT_BOLD) == (pFontDes->m_dwStyle & FXFONT_BOLD))
+    if (FontStyleIsBold(dwStyle) == FontStyleIsBold(pFontDes->m_dwStyle))
       nFind += FPF_SKIAMATCHWEIGHT_1;
-    if ((dwStyle & FXFONT_ITALIC) == (pFontDes->m_dwStyle & FXFONT_ITALIC))
+    if (FontStyleIsItalic(dwStyle) == FontStyleIsItalic(pFontDes->m_dwStyle))
       nFind += FPF_SKIAMATCHWEIGHT_1;
-    if ((dwStyle & FXFONT_FIXED_PITCH) ==
-        (pFontDes->m_dwStyle & FXFONT_FIXED_PITCH)) {
+    if (FontStyleIsFixedPitch(dwStyle) ==
+        FontStyleIsFixedPitch(pFontDes->m_dwStyle)) {
       nFind += FPF_SKIAMATCHWEIGHT_2;
     }
-    if ((dwStyle & FXFONT_SERIF) == (pFontDes->m_dwStyle & FXFONT_SERIF))
+    if (FontStyleIsSerif(dwStyle) == FontStyleIsSerif(pFontDes->m_dwStyle))
       nFind += FPF_SKIAMATCHWEIGHT_1;
-    if ((dwStyle & FXFONT_SCRIPT) == (pFontDes->m_dwStyle & FXFONT_SCRIPT))
+    if (FontStyleIsScript(dwStyle) == FontStyleIsScript(pFontDes->m_dwStyle))
       nFind += FPF_SKIAMATCHWEIGHT_2;
     if (dwSubst == dwSysFontName || dwSubstSans == dwSysFontName) {
       nFind += FPF_SKIAMATCHWEIGHT_NAME2;
diff --git a/core/fxge/android/cfx_androidfontinfo.cpp b/core/fxge/android/cfx_androidfontinfo.cpp
index c6c3e61866..15ac8c29b2 100644
--- a/core/fxge/android/cfx_androidfontinfo.cpp
+++ b/core/fxge/android/cfx_androidfontinfo.cpp
@@ -40,11 +40,11 @@ void* CFX_AndroidFontInfo::MapFont(int weight,
     dwStyle |= FXFONT_BOLD;
   if (bItalic)
     dwStyle |= FXFONT_ITALIC;
-  if (pitch_family & FXFONT_FF_FIXEDPITCH)
+  if (FontFamilyIsFixedPitch(pitch_family))
     dwStyle |= FXFONT_FIXED_PITCH;
-  if (pitch_family & FXFONT_FF_SCRIPT)
+  if (FontFamilyIsScript(pitch_family))
     dwStyle |= FXFONT_SCRIPT;
-  if (pitch_family & FXFONT_FF_ROMAN)
+  if (FontFamilyIsRoman(pitch_family))
     dwStyle |= FXFONT_SERIF;
   return m_pFontMgr->CreateFont(face, charset, dwStyle,
                                 FPF_MATCHFONT_REPLACEANSI);
diff --git a/core/fxge/apple/fx_mac_imp.cpp b/core/fxge/apple/fx_mac_imp.cpp
index 637984797a..324f0200b9 100644
--- a/core/fxge/apple/fx_mac_imp.cpp
+++ b/core/fxge/apple/fx_mac_imp.cpp
@@ -56,8 +56,8 @@ void GetJapanesePreference(ByteString* face, int weight, int pitch_family) {
     *face = JAPAN_GOTHIC;
     return;
   }
-  *face = ((pitch_family & FXFONT_FF_ROMAN) || weight <= 400) ? JAPAN_MINCHO
-                                                              : JAPAN_GOTHIC;
+  *face = (FontFamilyIsRoman(pitch_family) || weight <= 400) ? JAPAN_MINCHO
+                                                             : JAPAN_GOTHIC;
 }
 
 void* CFX_MacFontInfo::MapFont(int weight,
@@ -97,7 +97,7 @@ void* CFX_MacFontInfo::MapFont(int weight,
   if (it != m_FontList.end())
     return it->second.get();
 
-  if (charset == FX_CHARSET_ANSI && (pitch_family & FXFONT_FF_FIXEDPITCH))
+  if (charset == FX_CHARSET_ANSI && FontFamilyIsFixedPitch(pitch_family))
     return GetFont("Courier New");
 
   if (charset == FX_CHARSET_ANSI || charset == FX_CHARSET_Symbol)
diff --git a/core/fxge/cfx_folderfontinfo.cpp b/core/fxge/cfx_folderfontinfo.cpp
index dbc8142d69..1ee9ea729a 100644
--- a/core/fxge/cfx_folderfontinfo.cpp
+++ b/core/fxge/cfx_folderfontinfo.cpp
@@ -92,18 +92,16 @@ int32_t GetSimilarValue(int weight,
                         int pitch_family,
                         uint32_t style) {
   int32_t iSimilarValue = 0;
-  if (!!(style & FXFONT_BOLD) == (weight > 400))
+  if (FontStyleIsBold(style) == (weight > 400))
     iSimilarValue += 16;
-  if (!!(style & FXFONT_ITALIC) == bItalic)
+  if (FontStyleIsItalic(style) == bItalic)
     iSimilarValue += 16;
-  if (!!(style & FXFONT_SERIF) == !!(pitch_family & FXFONT_FF_ROMAN))
+  if (FontStyleIsSerif(style) == FontFamilyIsRoman(pitch_family))
     iSimilarValue += 16;
-  if (!!(style & FXFONT_SCRIPT) == !!(pitch_family & FXFONT_FF_SCRIPT))
+  if (FontStyleIsScript(style) == FontFamilyIsScript(pitch_family))
     iSimilarValue += 8;
-  if (!!(style & FXFONT_FIXED_PITCH) ==
-      !!(pitch_family & FXFONT_FF_FIXEDPITCH)) {
+  if (FontStyleIsFixedPitch(style) == FontFamilyIsFixedPitch(pitch_family))
     iSimilarValue += 8;
-  }
   return iSimilarValue;
 }
 
@@ -284,7 +282,7 @@ void* CFX_FolderFontInfo::FindFont(int weight,
                                    const char* family,
                                    bool bMatchName) {
   FontFaceInfo* pFind = nullptr;
-  if (charset == FX_CHARSET_ANSI && (pitch_family & FXFONT_FF_FIXEDPITCH))
+  if (charset == FX_CHARSET_ANSI && FontFamilyIsFixedPitch(pitch_family))
     return GetFont("Courier New");
 
   uint32_t charset_flag = GetCharset(charset);
diff --git a/core/fxge/cfx_fontmapper.cpp b/core/fxge/cfx_fontmapper.cpp
index e7d27af573..362e9bc0b4 100644
--- a/core/fxge/cfx_fontmapper.cpp
+++ b/core/fxge/cfx_fontmapper.cpp
@@ -9,6 +9,7 @@
 #include <algorithm>
 #include <memory>
 #include <sstream>
+#include <tuple>
 #include <utility>
 #include <vector>
 
@@ -19,11 +20,6 @@
 
 #include "third_party/base/stl_util.h"
 
-#define FX_FONT_STYLE_None 0x00
-#define FX_FONT_STYLE_Bold 0x01
-#define FX_FONT_STYLE_Italic 0x02
-#define FX_FONT_STYLE_BoldBold 0x04
-
 namespace {
 
 const int kNumStandardFonts = 14;
@@ -149,13 +145,6 @@ const struct AltFontFamily {
     {"ForteMT", "Forte"},
 };
 
-const struct FX_FontStyle {
-  const char* style;
-  int32_t len;
-} g_FontStyles[] = {
-    {"Bold", 4}, {"Italic", 6}, {"BoldItalic", 10}, {"Reg", 3}, {"Regular", 7},
-};
-
 const struct CODEPAGE_MAP {
   uint16_t codepage;
   uint8_t charset;
@@ -207,9 +196,9 @@ uint8_t GetCharsetFromCodePage(uint16_t codepage) {
   return FX_CHARSET_Default;
 }
 
-ByteString GetFontFamily(ByteString fontName, int nStyle) {
+ByteString GetFontFamily(ByteString fontName, uint32_t nStyle) {
   if (fontName.Contains("Script")) {
-    if ((nStyle & FX_FONT_STYLE_Bold) == FX_FONT_STYLE_Bold)
+    if (FontStyleIsBold(nStyle))
       fontName = "ScriptMTBold";
     else if (fontName.Contains("Palace"))
       fontName = "PalaceScriptMT";
@@ -238,26 +227,38 @@ ByteString ParseStyle(const char* pStyle, int iLen, int iIndex) {
   return ByteString(buf);
 }
 
-int32_t GetStyleType(const ByteString& bsStyle, bool bReverse) {
-  int32_t iLen = bsStyle.GetLength();
-  if (!iLen)
-    return -1;
-  int iSize = FX_ArraySize(g_FontStyles);
-  const FX_FontStyle* pStyle = nullptr;
-  for (int i = iSize - 1; i >= 0; --i) {
-    pStyle = g_FontStyles + i;
-    if (!pStyle || pStyle->len > iLen)
+const struct FX_FontStyle {
+  const char* name;
+  size_t len;
+  uint32_t style;
+} g_FontStyles[] = {
+    {"Bold", 4, FXFONT_BOLD},
+    {"Italic", 6, FXFONT_ITALIC},
+    {"BoldItalic", 10, FXFONT_BOLD | FXFONT_ITALIC},
+    {"Reg", 3, FXFONT_NORMAL},
+    {"Regular", 7, FXFONT_NORMAL},
+};
+
+// <exists, index, length>
+std::tuple<bool, uint32_t, size_t> GetStyleType(const ByteString& bsStyle,
+                                                bool bReverse) {
+  if (bsStyle.IsEmpty())
+    return {false, FXFONT_NORMAL, 0};
+
+  for (int i = FX_ArraySize(g_FontStyles) - 1; i >= 0; --i) {
+    const FX_FontStyle* pStyle = g_FontStyles + i;
+    if (!pStyle || pStyle->len > bsStyle.GetLength())
       continue;
 
     if (bReverse) {
-      if (bsStyle.Right(pStyle->len).Compare(pStyle->style) == 0)
-        return i;
+      if (bsStyle.Right(pStyle->len).Compare(pStyle->name) == 0)
+        return {true, pStyle->style, pStyle->len};
     } else {
-      if (bsStyle.Left(pStyle->len).Compare(pStyle->style) == 0)
-        return i;
+      if (bsStyle.Left(pStyle->len).Compare(pStyle->name) == 0)
+        return {true, pStyle->style, pStyle->len};
     }
   }
-  return -1;
+  return {false, FXFONT_NORMAL, 0};
 }
 
 bool CheckSupportThirdPartFont(ByteString name, int& PitchFamily) {
@@ -269,11 +270,11 @@ bool CheckSupportThirdPartFont(ByteString name, int& PitchFamily) {
 }
 
 void UpdatePitchFamily(uint32_t flags, int& PitchFamily) {
-  if (flags & FXFONT_SERIF)
+  if (FontStyleIsSerif(flags))
     PitchFamily |= FXFONT_FF_ROMAN;
-  if (flags & FXFONT_SCRIPT)
+  if (FontStyleIsScript(flags))
     PitchFamily |= FXFONT_FF_SCRIPT;
-  if (flags & FXFONT_FIXED_PITCH)
+  if (FontStyleIsFixedPitch(flags))
     PitchFamily |= FXFONT_FF_FIXEDPITCH;
 }
 
@@ -380,7 +381,7 @@ FXFT_Face CFX_FontMapper::UseInternalSubst(CFX_SubstFont* pSubstFont,
                                            int iBaseFont,
                                            int italic_angle,
                                            int weight,
-                                           int picthfamily) {
+                                           int pitch_family) {
   if (iBaseFont < kNumStandardFonts) {
     if (m_FoxitFaces[iBaseFont])
       return m_FoxitFaces[iBaseFont];
@@ -395,7 +396,7 @@ FXFT_Face CFX_FontMapper::UseInternalSubst(CFX_SubstFont* pSubstFont,
   pSubstFont->m_ItalicAngle = italic_angle;
   if (weight)
     pSubstFont->m_Weight = weight;
-  if (picthfamily & FXFONT_FF_ROMAN) {
+  if (FontFamilyIsRoman(pitch_family)) {
     pSubstFont->m_Weight = pSubstFont->m_Weight * 4 / 5;
     pSubstFont->m_Family = "Chrome Serif";
     if (m_MMFaces[1])
@@ -423,6 +424,9 @@ FXFT_Face CFX_FontMapper::FindSubstFont(const ByteString& name,
                                         int italic_angle,
                                         int WindowCP,
                                         CFX_SubstFont* pSubstFont) {
+  if (weight == 0)
+    weight = FXFONT_FW_NORMAL;
+
   if (!(flags & FXFONT_USEEXTERNATTR)) {
     weight = FXFONT_FW_NORMAL;
     italic_angle = 0;
@@ -462,13 +466,13 @@ FXFT_Face CFX_FontMapper::FindSubstFont(const ByteString& name,
   }
   int PitchFamily = 0;
   bool bItalic = false;
-  uint32_t nStyle = 0;
+  uint32_t nStyle = FXFONT_NORMAL;
   bool bStyleAvail = false;
   if (iBaseFont < 12) {
     if ((iBaseFont % 4) == 1 || (iBaseFont % 4) == 2)
-      nStyle |= FX_FONT_STYLE_Bold;
+      nStyle |= FXFONT_BOLD;
     if ((iBaseFont % 4) / 2)
-      nStyle |= FX_FONT_STYLE_Italic;
+      nStyle |= FXFONT_ITALIC;
     if (iBaseFont < 4)
       PitchFamily |= FXFONT_FF_FIXEDPITCH;
     if (iBaseFont >= 8)
@@ -485,19 +489,22 @@ FXFT_Face CFX_FontMapper::FindSubstFont(const ByteString& name,
     }
     if (!bHasHyphen) {
       int nLen = family.GetLength();
-      int32_t nRet = GetStyleType(family, true);
-      if (nRet > -1) {
-        family = family.Left(nLen - g_FontStyles[nRet].len);
-        if (nRet == 0)
-          nStyle |= FX_FONT_STYLE_Bold;
-        else if (nRet == 1)
-          nStyle |= FX_FONT_STYLE_Italic;
-        else if (nRet == 2)
-          nStyle |= (FX_FONT_STYLE_Bold | FX_FONT_STYLE_Italic);
+      bool hasStyleType;
+      uint32_t styleType;
+      size_t len;
+      std::tie(hasStyleType, styleType, len) = GetStyleType(family, true);
+      if (hasStyleType) {
+        family = family.Left(nLen - len);
+        nStyle |= styleType;
       }
     }
     UpdatePitchFamily(flags, PitchFamily);
   }
+
+  int old_weight = weight;
+  if (FontStyleIsBold(nStyle))
+    weight = FXFONT_FW_BOLD;
+
   if (!style.IsEmpty()) {
     int nLen = style.GetLength();
     const char* pStyle = style.c_str();
@@ -506,57 +513,54 @@ FXFT_Face CFX_FontMapper::FindSubstFont(const ByteString& name,
     ByteString buf;
     while (i < nLen) {
       buf = ParseStyle(pStyle, nLen, i);
-      int32_t nRet = GetStyleType(buf, false);
-      if ((i && !bStyleAvail) || (!i && nRet < 0)) {
+
+      bool hasStyleType;
+      uint32_t styleType;
+      size_t len;
+      std::tie(hasStyleType, styleType, len) = GetStyleType(buf, false);
+      if ((i && !bStyleAvail) || (!i && !hasStyleType)) {
         family = SubstName;
         iBaseFont = kNumStandardFonts;
         break;
       }
-      if (nRet >= 0) {
+      if (hasStyleType)
         bStyleAvail = true;
+
+      if (FontStyleIsBold(styleType)) {
+        // If we're already bold, then we're double bold, use special weight.
+        if (FontStyleIsBold(nStyle)) {
+          weight = FXFONT_FW_BOLD_BOLD;
+        } else {
+          weight = FXFONT_FW_BOLD;
+          nStyle |= FXFONT_BOLD;
+        }
+
+        bFirstItem = false;
       }
-      if (nRet == 1) {
+      if (FontStyleIsItalic(styleType) && FontStyleIsBold(styleType)) {
+        nStyle |= FXFONT_ITALIC;
+      } else if (FontStyleIsItalic(styleType)) {
         if (bFirstItem) {
-          nStyle |= FX_FONT_STYLE_Italic;
+          nStyle |= FXFONT_ITALIC;
         } else {
           family = SubstName;
           iBaseFont = kNumStandardFonts;
         }
         break;
       }
-      if (nRet == 0) {
-        if (nStyle & FX_FONT_STYLE_Bold)
-          nStyle |= FX_FONT_STYLE_BoldBold;
-        else
-          nStyle |= FX_FONT_STYLE_Bold;
-        bFirstItem = false;
-      } else if (nRet == 2) {
-        nStyle |= FX_FONT_STYLE_Italic;
-        if (nStyle & FX_FONT_STYLE_Bold)
-          nStyle |= FX_FONT_STYLE_BoldBold;
-        else
-          nStyle |= FX_FONT_STYLE_Bold;
-        bFirstItem = false;
-      }
       i += buf.GetLength() + 1;
     }
   }
-  weight = weight ? weight : FXFONT_FW_NORMAL;
-  int old_weight = weight;
-  if (nStyle) {
-    weight =
-        nStyle & FX_FONT_STYLE_BoldBold
-            ? 900
-            : (nStyle & FX_FONT_STYLE_Bold ? FXFONT_FW_BOLD : FXFONT_FW_NORMAL);
-  }
-  if (nStyle & FX_FONT_STYLE_Italic)
+  if (FontStyleIsItalic(nStyle))
     bItalic = true;
+
   int iExact = 0;
   int Charset = FX_CHARSET_ANSI;
   if (WindowCP)
     Charset = GetCharsetFromCodePage(WindowCP);
-  else if (iBaseFont == kNumStandardFonts && (flags & FXFONT_SYMBOLIC))
+  else if (iBaseFont == kNumStandardFonts && FontStyleIsSymbolic(flags))
     Charset = FX_CHARSET_Symbol;
+
   bool bCJK = (Charset == FX_CHARSET_ShiftJIS ||
                Charset == FX_CHARSET_ChineseSimplified ||
                Charset == FX_CHARSET_Hangul ||
@@ -594,33 +598,29 @@ FXFT_Face CFX_FontMapper::FindSubstFont(const ByteString& name,
       pSubstFont->m_bSubstCJK = true;
       if (nStyle)
         pSubstFont->m_WeightCJK = nStyle ? weight : FXFONT_FW_NORMAL;
-      if (nStyle & FX_FONT_STYLE_Italic)
+      if (FontStyleIsItalic(nStyle))
         pSubstFont->m_bItalicCJK = true;
     }
   } else {
     italic_angle = 0;
-    weight =
-        nStyle & FX_FONT_STYLE_BoldBold
-            ? 900
-            : (nStyle & FX_FONT_STYLE_Bold ? FXFONT_FW_BOLD : FXFONT_FW_NORMAL);
   }
+
   if (!match.IsEmpty() || iBaseFont < kNumStandardFonts) {
     if (!match.IsEmpty())
       family = match;
     if (iBaseFont < kNumStandardFonts) {
       if (nStyle && !(iBaseFont % 4)) {
-        if ((nStyle & 0x3) == 1)
+        if (FontStyleIsBold(nStyle) && FontStyleIsItalic(nStyle))
+          iBaseFont += 2;
+        else if (FontStyleIsBold(nStyle))
           iBaseFont += 1;
-        if ((nStyle & 0x3) == 2)
+        else if (FontStyleIsItalic(nStyle))
           iBaseFont += 3;
-        if ((nStyle & 0x3) == 3)
-          iBaseFont += 2;
       }
       family = g_Base14FontNames[iBaseFont];
     }
-  } else {
-    if (flags & FXFONT_ITALIC)
-      bItalic = true;
+  } else if (FontStyleIsItalic(flags)) {
+    bItalic = true;
   }
   iExact = !match.IsEmpty();
   void* hFont = m_pFontInfo->MapFont(weight, bItalic, Charset, PitchFamily,
diff --git a/core/fxge/fx_font.h b/core/fxge/fx_font.h
index 8f559829b6..f2550d0488 100644
--- a/core/fxge/fx_font.h
+++ b/core/fxge/fx_font.h
@@ -32,6 +32,7 @@ using CFX_TypeFace = SkTypeface;
 /* Typical weight values */
 #define FXFONT_FW_NORMAL 400
 #define FXFONT_FW_BOLD 700
+#define FXFONT_FW_BOLD_BOLD 900
 
 /* Font styles as defined in PDF 1.7 Table 5.20 */
 #define FXFONT_NORMAL (0)
@@ -44,7 +45,6 @@ using CFX_TypeFace = SkTypeface;
 #define FXFONT_ALLCAP (1 << 16)
 #define FXFONT_SMALLCAP (1 << 17)
 #define FXFONT_BOLD (1 << 18)
-#define FXFONT_BOLD_ITALIC (FXFONT_BOLD | FXFONT_ITALIC)
 
 /* Other font flags */
 #define FXFONT_USEEXTERNATTR 0x80000
@@ -105,4 +105,39 @@ ByteString GetNameFromTT(const uint8_t* name_table,
 
 int PDF_GetStandardFontName(ByteString* name);
 
+inline bool FontStyleIsBold(uint32_t style) {
+  return !!(style & FXFONT_BOLD);
+}
+inline bool FontStyleIsItalic(uint32_t style) {
+  return !!(style & FXFONT_ITALIC);
+}
+inline bool FontStyleIsFixedPitch(uint32_t style) {
+  return !!(style & FXFONT_FIXED_PITCH);
+}
+inline bool FontStyleIsSymbolic(uint32_t style) {
+  return !!(style & FXFONT_SYMBOLIC);
+}
+inline bool FontStyleIsNonSymbolic(uint32_t style) {
+  return !!(style & FXFONT_NONSYMBOLIC);
+}
+inline bool FontStyleIsAllCaps(uint32_t style) {
+  return !!(style & FXFONT_ALLCAP);
+}
+inline bool FontStyleIsSerif(uint32_t style) {
+  return !!(style & FXFONT_SERIF);
+}
+inline bool FontStyleIsScript(uint32_t style) {
+  return !!(style & FXFONT_SCRIPT);
+}
+
+inline bool FontFamilyIsFixedPitch(uint32_t family) {
+  return !!(family & FXFONT_FF_FIXEDPITCH);
+}
+inline bool FontFamilyIsRoman(uint32_t family) {
+  return !!(family & FXFONT_FF_ROMAN);
+}
+inline bool FontFamilyIsScript(int32_t family) {
+  return !!(family & FXFONT_FF_SCRIPT);
+}
+
 #endif  // CORE_FXGE_FX_FONT_H_
diff --git a/core/fxge/fx_ge_linux.cpp b/core/fxge/fx_ge_linux.cpp
index 302470b386..c9d1dd128b 100644
--- a/core/fxge/fx_ge_linux.cpp
+++ b/core/fxge/fx_ge_linux.cpp
@@ -59,7 +59,7 @@ size_t GetJapanesePreference(const char* facearr,
     }
     return 3;
   }
-  if (!(pitch_family & FXFONT_FF_ROMAN) && weight > 400)
+  if (!FontFamilyIsRoman(pitch_family) && weight > 400)
     return 0;
 
   return 2;