5 files changed, 23 insertions, 2 deletions
diff --git a/src/gui/text/qdistancefield.cpp b/src/gui/text/qdistancefield.cpp
index 473ddd0172..d90134482d 100644
--- a/src/gui/text/qdistancefield.cpp
+++ b/src/gui/text/qdistancefield.cpp
@@ -693,8 +693,10 @@ static void makeDistanceField(QDistanceFieldData *data, const QPainterPath &path
 
 static bool imageHasNarrowOutlines(const QImage &im)
 {
-    if (im.isNull())
+    if (im.isNull() || im.width() < 1 || im.height() < 1)
         return false;
+    else if (im.width() == 1 || im.height() == 1)
+        return true;
 
     int minHThick = 999;
     int minVThick = 999;
diff --git a/src/gui/text/qfontengine.cpp b/src/gui/text/qfontengine.cpp
index 96f7e06a47..74317e99c3 100644
--- a/src/gui/text/qfontengine.cpp
+++ b/src/gui/text/qfontengine.cpp
@@ -1222,6 +1222,11 @@ int QFontEngine::glyphCount() const
     return count;
 }
 
+Qt::HANDLE QFontEngine::handle() const
+{
+    return Q_NULLPTR;
+}
+
 const uchar *QFontEngine::getCMap(const uchar *table, uint tableSize, bool *isSymbolFont, int *cmapSize)
 {
     const uchar *header = table;
diff --git a/src/gui/text/qfontengine_ft.cpp b/src/gui/text/qfontengine_ft.cpp
index 9d62a03f4c..86fb0e8ae4 100644
--- a/src/gui/text/qfontengine_ft.cpp
+++ b/src/gui/text/qfontengine_ft.cpp
@@ -1782,6 +1782,12 @@ void QFontEngineFT::unlockAlphaMapForGlyph()
     QFontEngine::unlockAlphaMapForGlyph();
 }
 
+static inline bool is2dRotation(const QTransform &t)
+{
+    return qFuzzyCompare(t.m11(), t.m22()) && qFuzzyCompare(t.m12(), -t.m21())
+        && qFuzzyCompare(t.m11()*t.m22() - t.m12()*t.m21(), 1.0);
+}
+
 QFontEngineFT::Glyph *QFontEngineFT::loadGlyphFor(glyph_t g,
                                                   QFixed subPixelPosition,
                                                   GlyphFormat format,
@@ -1795,7 +1801,7 @@ QFontEngineFT::Glyph *QFontEngineFT::loadGlyphFor(glyph_t g,
     Glyph *glyph = glyphSet != 0 ? glyphSet->getGlyph(g, subPixelPosition) : 0;
     if (!glyph || glyph->format != format || (!fetchBoundingBox && !glyph->data)) {
         QScopedValueRollback<HintStyle> saved_default_hint_style(default_hint_style);
-        if (t.type() >= QTransform::TxScale)
+        if (t.type() >= QTransform::TxScale && !is2dRotation(t))
             default_hint_style = HintNone; // disable hinting if the glyphs are transformed
 
         lockFace();
@@ -2007,6 +2013,11 @@ QFontEngine *QFontEngineFT::cloneWithSize(qreal pixelSize) const
     }
 }
 
+Qt::HANDLE QFontEngineFT::handle() const
+{
+    return non_locked_face();
+}
+
 QT_END_NAMESPACE
 
 #endif // QT_NO_FREETYPE
diff --git a/src/gui/text/qfontengine_ft_p.h b/src/gui/text/qfontengine_ft_p.h
index f9b37ff039..3421c873d5 100644
--- a/src/gui/text/qfontengine_ft_p.h
+++ b/src/gui/text/qfontengine_ft_p.h
@@ -288,6 +288,7 @@ private:
     void setDefaultHintStyle(HintStyle style) Q_DECL_OVERRIDE;
 
     QFontEngine *cloneWithSize(qreal pixelSize) const Q_DECL_OVERRIDE;
+    Qt::HANDLE handle() const Q_DECL_OVERRIDE;
     bool initFromFontEngine(const QFontEngineFT *fontEngine);
 
     HintStyle defaultHintStyle() const { return default_hint_style; }
diff --git a/src/gui/text/qfontengine_p.h b/src/gui/text/qfontengine_p.h
index 1ef3a360d4..1430444c7e 100644
--- a/src/gui/text/qfontengine_p.h
+++ b/src/gui/text/qfontengine_p.h
@@ -235,6 +235,8 @@ public:
 
     virtual QFontEngine *cloneWithSize(qreal /*pixelSize*/) const { return 0; }
 
+    virtual Qt::HANDLE handle() const;
+
     void *harfbuzzFont() const;
     void *harfbuzzFace() const;
     bool supportsScript(QChar::Script script) const;