2 files changed, 11 insertions, 0 deletions
diff --git a/src/gui/text/qfontengine.cpp b/src/gui/text/qfontengine.cpp
index b3889a02a4..303c85ce75 100644
--- a/src/gui/text/qfontengine.cpp
+++ b/src/gui/text/qfontengine.cpp
@@ -891,6 +891,16 @@ QByteArray QFontEngine::getSfntTable(uint tag) const
     return table;
 }
 
+void QFontEngine::clearGlyphCache(const void *key)
+{
+    for (QLinkedList<GlyphCacheEntry>::iterator it = m_glyphCaches.begin(), end = m_glyphCaches.end(); it != end; ) {
+        if (it->context == key)
+            it = m_glyphCaches.erase(it);
+        else
+            ++it;
+    }
+}
+
 void QFontEngine::setGlyphCache(const void *key, QFontEngineGlyphCache *data)
 {
     Q_ASSERT(data);
diff --git a/src/gui/text/qfontengine_p.h b/src/gui/text/qfontengine_p.h
index d3faef93bb..c181d61d73 100644
--- a/src/gui/text/qfontengine_p.h
+++ b/src/gui/text/qfontengine_p.h
@@ -256,6 +256,7 @@ public:
 
     virtual int getPointInOutline(glyph_t glyph, int flags, quint32 point, QFixed *xpos, QFixed *ypos, quint32 *nPoints);
 
+    void clearGlyphCache(const void *key);
     void setGlyphCache(const void *key, QFontEngineGlyphCache *data);
     QFontEngineGlyphCache *glyphCache(const void *key, QFontEngineGlyphCache::Type type, const QTransform &transform) const;