Allow larger linearAdvance

src/gui/text/freetype/qfontengine_ft.cpp

@@ -1133,7 +1133,7 @@ int QFontEngineFT::loadFlags(QGlyphSet *set, GlyphFormat format, int flags,
 static inline bool areMetricsTooLarge(const QFontEngineFT::GlyphInfo &info)
 {
     // false if exceeds QFontEngineFT::Glyph metrics
-    return info.width > 0xFF || info.height > 0xFF || info.linearAdvance > 0x7FFF;
+    return info.width > 0xFF || info.height > 0xFF;
 }
 
 static inline void transformBoundingBox(int *left, int *top, int *right, int *bottom, FT_Matrix *matrix)
@@ -1874,7 +1874,6 @@ QFontEngineFT::Glyph *QFontEngineFT::loadGlyph(QGlyphSet *set, uint glyph,
         info.height = TRUNC(top - bottom);
 
         // If any of the metrics are too large to fit, don't cache them
-        // Also, avoid integer overflow when linearAdvance is to large to fit in a signed short
         if (areMetricsTooLarge(info))
             return nullptr;
 

src/gui/text/qfontengine_p.h

@@ -88,7 +88,7 @@ class Q_GUI_EXPORT QFontEngine
     struct Glyph {
         Glyph() = default;
         ~Glyph() { delete [] data; }
-        short linearAdvance = 0;
+        int linearAdvance = 0;
         unsigned short width = 0;
         unsigned short height = 0;
         short x = 0;