Deduplicate QWidgetPrivate::invalidateBuffer

Now that MSVC (presumably) supports templates, we can merge the QRect
and QRegion versions of the functions into one.

The function has been renamed to invalidateBackingStore to better
reflect what it's doing.

Change-Id: I0e94a0cabd286cf97f2ba718a42ee0425f59d3ec
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/src/widgets/kernel/qwidget_p.h b/src/widgets/kernel/qwidget_p.h
index ab5dc6bfba..60612e9b52 100644
--- a/src/widgets/kernel/qwidget_p.h
+++ b/src/widgets/kernel/qwidget_p.h
@@ -452,10 +452,11 @@ public:
     void scrollChildren(int dx, int dy);
     void moveRect(const QRect &, int dx, int dy);
     void scrollRect(const QRect &, int dx, int dy);
-    void invalidateBuffer_resizeHelper(const QPoint &oldPos, const QSize &oldSize);
-    // ### Qt 4.6: Merge into a template function (after MSVC isn't supported anymore).
-    void invalidateBuffer(const QRegion &);
-    void invalidateBuffer(const QRect &);
+    void invalidateBackingStore_resizeHelper(const QPoint &oldPos, const QSize &oldSize);
+
+    template <class T>
+    void invalidateBackingStore(const T &);
+
     QRegion overlappedRegion(const QRect &rect, bool breakAfterFirst = false) const;
     void syncBackingStore();
     void syncBackingStore(const QRegion &region);