Windows: Respect hinting preferences with FreeType engine.

One of the fontEngine()'s methods was missing hinting. This bug only
manifests on Windows because on Linux QFontConfigDataBase already sets
hinting on both code paths.

Task-number: QTBUG-42534
Change-Id: I3a66a9d4aaa5e390fee305a3d5aacfeba38a1fc3
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>

src/platformsupport/fontdatabases/basic/qbasicfontdatabase.cpp

@@ -106,6 +106,24 @@ void QBasicFontDatabase::populateFontDatabase()
     }
 }
 
+inline static void setHintingPreference(QFontEngine *engine, QFont::HintingPreference hintingPreference)
+{
+    switch (hintingPreference) {
+    case QFont::PreferNoHinting:
+        engine->setDefaultHintStyle(QFontEngineFT::HintNone);
+        break;
+    case QFont::PreferFullHinting:
+        engine->setDefaultHintStyle(QFontEngineFT::HintFull);
+        break;
+    case QFont::PreferVerticalHinting:
+        engine->setDefaultHintStyle(QFontEngineFT::HintLight);
+        break;
+    case QFont::PreferDefaultHinting:
+        // Leave it as it is
+        break;
+    }
+}
+
 QFontEngine *QBasicFontDatabase::fontEngine(const QFontDef &fontDef, void *usrPtr)
 {
     FontFile *fontfile = static_cast<FontFile *> (usrPtr);
@@ -120,6 +138,8 @@ QFontEngine *QBasicFontDatabase::fontEngine(const QFontDef &fontDef, void *usrPt
     if (!engine->init(fid, antialias, format) || engine->invalid()) {
         delete engine;
         engine = 0;
+    } else {
+        setHintingPreference(engine, static_cast<QFont::HintingPreference>(fontDef.hintingPreference));
     }
 
     return engine;
@@ -172,21 +192,7 @@ QFontEngine *QBasicFontDatabase::fontEngine(const QByteArray &fontData, qreal pi
     }
 
     fe->updateFamilyNameAndStyle();
-
-    switch (hintingPreference) {
-    case QFont::PreferNoHinting:
-        fe->setDefaultHintStyle(QFontEngineFT::HintNone);
-        break;
-    case QFont::PreferFullHinting:
-        fe->setDefaultHintStyle(QFontEngineFT::HintFull);
-        break;
-    case QFont::PreferVerticalHinting:
-        fe->setDefaultHintStyle(QFontEngineFT::HintLight);
-        break;
-    default:
-        // Leave it as it is
-        break;
-    }
+    setHintingPreference(fe, hintingPreference);
 
     return fe;
 }