Fix crash when rotating cleartype text under gl engine.

Reviewed-by: Eskil

3 files changed, 13 insertions, 8 deletions

diff --git a/src/gui/text/qfontengine.cpp b/src/gui/text/qfontengine.cpp
index 27fc3c1..0eadf04 100644
--- a/src/gui/text/qfontengine.cpp
+++ b/src/gui/text/qfontengine.cpp
@@ -742,14 +742,15 @@ void QFontEngine::expireGlyphCache()
     }
 }
 
-void QFontEngine::setGlyphCache(void *key, QFontEngineGlyphCache *data)
+void QFontEngine::setGlyphCache(void *key, QFontEngineGlyphCache *data, QFontEngineGlyphCache::Type type)
 {
     Q_ASSERT(data);
     QList<QFontEngineGlyphCache*> items = m_glyphPointerHash.value(key);
 
     for (QList<QFontEngineGlyphCache*>::iterator it = items.begin(), end = items.end(); it != end; ++it) {
         QFontEngineGlyphCache *c = *it;
-        if (qtransform_equals_no_translate(c->m_transform, data->m_transform)) {
+        if (qtransform_equals_no_translate(c->m_transform, data->m_transform)
+            && c->cacheType() == type) {
             if (c == data)
                 return;
             items.removeAll(c);
@@ -786,13 +787,14 @@ void QFontEngine::setGlyphCache(QFontEngineGlyphCache::Type key, QFontEngineGlyp
     expireGlyphCache();
 }
 
-QFontEngineGlyphCache *QFontEngine::glyphCache(void *key, const QTransform &transform) const
+QFontEngineGlyphCache *QFontEngine::glyphCache(void *key, const QTransform &transform, QFontEngineGlyphCache::Type type) const
 {
     QList<QFontEngineGlyphCache*> items = m_glyphPointerHash.value(key);
 
     for (QList<QFontEngineGlyphCache*>::iterator it = items.begin(), end = items.end(); it != end; ++it) {
         QFontEngineGlyphCache *c = *it;
-        if (qtransform_equals_no_translate(c->m_transform, transform)) {
+        if (qtransform_equals_no_translate(c->m_transform, transform)
+            && type == c->cacheType()) {
             m_glyphCacheQueue.removeAll(c); // last used, move it up
             m_glyphCacheQueue.append(c);
             return c;
diff --git a/src/gui/text/qfontengine_p.h b/src/gui/text/qfontengine_p.h
index 728c344..62bff85 100644
--- a/src/gui/text/qfontengine_p.h
+++ b/src/gui/text/qfontengine_p.h
@@ -218,9 +218,9 @@ public:
 
     virtual HB_Error getPointInOutline(HB_Glyph glyph, int flags, hb_uint32 point, HB_Fixed *xpos, HB_Fixed *ypos, hb_uint32 *nPoints);
 
-    void setGlyphCache(void *key, QFontEngineGlyphCache *data);
+    void setGlyphCache(void *key, QFontEngineGlyphCache *data, QFontEngineGlyphCache::Type type);
     void setGlyphCache(QFontEngineGlyphCache::Type key, QFontEngineGlyphCache *data);
-    QFontEngineGlyphCache *glyphCache(void *key, const QTransform &transform) const;
+    QFontEngineGlyphCache *glyphCache(void *key, const QTransform &transform, QFontEngineGlyphCache::Type type) const;
     QFontEngineGlyphCache *glyphCache(QFontEngineGlyphCache::Type key, const QTransform &transform) const;
 
     static const uchar *getCMap(const uchar *table, uint tableSize, bool *isSymbolFont, int *cmapSize);
diff --git a/src/gui/text/qfontengineglyphcache_p.h b/src/gui/text/qfontengineglyphcache_p.h
index e04f4ac..c6112ba 100644
--- a/src/gui/text/qfontengineglyphcache_p.h
+++ b/src/gui/text/qfontengineglyphcache_p.h
@@ -75,17 +75,20 @@ QT_BEGIN_NAMESPACE
 class QFontEngineGlyphCache
 {
 public:
-    QFontEngineGlyphCache(const QTransform &matrix) : m_transform(matrix) { }
-
     enum Type {
         Raster_RGBMask,
         Raster_A8,
         Raster_Mono
     };
 
+    QFontEngineGlyphCache(const QTransform &matrix, Type type) : m_transform(matrix), m_type(type) { }
+
     virtual ~QFontEngineGlyphCache() { }
 
+    Type cacheType() const { return m_type; }
+
     QTransform m_transform;
+    QFontEngineGlyphCache::Type m_type;
 };
 typedef QHash<void *, QList<QFontEngineGlyphCache *> > GlyphPointerHash;
 typedef QHash<int, QList<QFontEngineGlyphCache *> > GlyphIntHash;