Added a fallback Win32 font information class for win32k lockdown.

core/src/fxge/ge/fx_ge_fontmap.cpp

Index: core/src/fxge/ge/fx_ge_fontmap.cpp
diff --git a/core/src/fxge/ge/fx_ge_fontmap.cpp b/core/src/fxge/ge/fx_ge_fontmap.cpp
index 90b3c52546fe03e2fc9d01085300e7d6289daae4..826caa0b18bb43f375db3971f34e3c43c4b5df2b 100644
--- a/core/src/fxge/ge/fx_ge_fontmap.cpp
+++ b/core/src/fxge/ge/fx_ge_fontmap.cpp
@@ -1407,6 +1407,105 @@ void CFX_FolderFontInfo::ReportFace(CFX_ByteString& path,
   }
   m_FontList[facename] = pInfo;
 }
+static const struct {
+  const FX_CHAR* m_pName;
+  const FX_CHAR* m_pSubstName;
+} Base14Substs[] = {
+    {"Courier", "Courier New"},
+    {"Courier-Bold", "Courier New Bold"},
+    {"Courier-BoldOblique", "Courier New Bold Italic"},
+    {"Courier-Oblique", "Courier New Italic"},
+    {"Helvetica", "Arial"},
+    {"Helvetica-Bold", "Arial Bold"},
+    {"Helvetica-BoldOblique", "Arial Bold Italic"},
+    {"Helvetica-Oblique", "Arial Italic"},
+    {"Times-Roman", "Times New Roman"},
+    {"Times-Bold", "Times New Roman Bold"},
+    {"Times-BoldItalic", "Times New Roman Bold Italic"},
+    {"Times-Italic", "Times New Roman Italic"},
+};
+void* CFX_FolderFontInfo::GetSubstFont(const CFX_ByteString& face) {
+  for (size_t iBaseFont = 0; iBaseFont < FX_ArraySize(Base14Substs);
+       iBaseFont++) {
+    if (face == Base14Substs[iBaseFont].m_pName) {
+      return GetFont(Base14Substs[iBaseFont].m_pSubstName);
+    }
+  }
+  return nullptr;
+}
+static FX_DWORD _GetCharset(int charset) {
+  switch (charset) {
+    case FXFONT_SHIFTJIS_CHARSET:
+      return CHARSET_FLAG_SHIFTJIS;
+    case FXFONT_GB2312_CHARSET:
+      return CHARSET_FLAG_GB;
+    case FXFONT_CHINESEBIG5_CHARSET:
+      return CHARSET_FLAG_BIG5;
+    case FXFONT_HANGEUL_CHARSET:
+      return CHARSET_FLAG_KOREAN;
+    case FXFONT_SYMBOL_CHARSET:
+      return CHARSET_FLAG_SYMBOL;
+    case FXFONT_ANSI_CHARSET:
+      return CHARSET_FLAG_ANSI;
+    default:
+      break;
+  }
+  return 0;
+}
+static int32_t _GetSimilarValue(int weight,
+                                FX_BOOL bItalic,
+                                int pitch_family,
+                                FX_DWORD style) {
+  int32_t iSimilarValue = 0;
+  if ((style & FXFONT_BOLD) == (weight > 400)) {
+    iSimilarValue += 16;
+  }
+  if ((style & FXFONT_ITALIC) == bItalic) {
+    iSimilarValue += 16;
+  }
+  if ((style & FXFONT_SERIF) == (pitch_family & FXFONT_FF_ROMAN)) {
+    iSimilarValue += 16;
+  }
+  if ((style & FXFONT_SCRIPT) == (pitch_family & FXFONT_FF_SCRIPT)) {
+    iSimilarValue += 8;
+  }
+  if ((style & FXFONT_FIXED_PITCH) == (pitch_family & FXFONT_FF_FIXEDPITCH)) {
+    iSimilarValue += 8;
+  }
+  return iSimilarValue;
+}
+void* CFX_FolderFontInfo::FindFont(int weight,
+                                   FX_BOOL bItalic,
+                                   int charset,
+                                   int pitch_family,
+                                   const FX_CHAR* family,
+                                   FX_BOOL bMatchName) {
+  CFX_FontFaceInfo* pFind = nullptr;
+  if (charset == FXFONT_ANSI_CHARSET && (pitch_family & FXFONT_FF_FIXEDPITCH)) {
+    return GetFont("Courier New");
+  }
+  FX_DWORD charset_flag = _GetCharset(charset);
+  int32_t iBestSimilar = 0;
+  for (const auto& it : m_FontList) {
+    const CFX_ByteString& bsName = it.first;
+    CFX_FontFaceInfo* pFont = it.second;
+    if (!(pFont->m_Charsets & charset_flag) &&
+        charset != FXFONT_DEFAULT_CHARSET) {
+      continue;
+    }
+    int32_t index = bsName.Find(family);
+    if (bMatchName && index < 0) {
+      continue;
+    }
+    int32_t iSimilarValue =
+        _GetSimilarValue(weight, bItalic, pitch_family, pFont->m_Styles);
+    if (iSimilarValue > iBestSimilar) {
+      iBestSimilar = iSimilarValue;
+      pFind = pFont;
+    }
+  }
+  return pFind;
+}
 void* CFX_FolderFontInfo::MapFont(int weight,
                                   FX_BOOL bItalic,
                                   int charset,