FreeType: allow falling back to synthesized bold if desired

Some users still prefer the fake bold look even if in some cases it does not look good. So add an environment variable - QT_NO_SYNTHESIZED_BOLD_LIMIT - to allow that fallback to stay in place. Change-Id: I8212c1fa36edb4730b187dc4a23ea45f94981154 Reviewed-by: Eskil Abrahamsen Blomfeldt <[email protected]> (cherry picked from commit fa53c62) Reviewed-by: Tuomas Vaarala <[email protected]>
boris-fx · Jan 17, 2022 · 7d9329d · 7d9329d
1 parent 90ad5ae
commit 7d9329d
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/platformsupport/fontdatabases/freetype/qfontengine_ft.cpp b/src/platformsupport/fontdatabases/freetype/qfontengine_ft.cpp
@@ -750,8 +750,10 @@ bool QFontEngineFT::init(FaceId faceId, bool antialias, GlyphFormat format,
         // fake bold
         if ((fontDef.weight >= QFont::Bold) && !(face->style_flags & FT_STYLE_FLAG_BOLD) && !FT_IS_FIXED_WIDTH(face) && !qEnvironmentVariableIsSet("QT_NO_SYNTHESIZED_BOLD")) {
             if (const TT_OS2 *os2 = reinterpret_cast<const TT_OS2 *>(FT_Get_Sfnt_Table(face, ft_sfnt_os2))) {
-                if (os2->usWeightClass < 700 && fontDef.pixelSize < 64)
+                if (os2->usWeightClass < 700 &&
+                    (fontDef.pixelSize < 64 || qEnvironmentVariableIsSet("QT_NO_SYNTHESIZED_BOLD_LIMIT"))) {
                     embolden = true;
+                }
             }
         }
         // underline metrics