From 794c71cd5eb7fc976b8f203c4d56a9567933dd9f Mon Sep 17 00:00:00 2001
From: Anders Bakken <anders.bakken@nokia.com>
Date: Wed, 2 Sep 2009 13:10:36 -0700
Subject: Add QDirectFBWindowSurface::releaseSubSurface

This convenience function will be called from whereever the subsurface
is invalidated.

Reviewed-by: Donald Carr <donald.carr@nokia.com>
---
 src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.cpp | 16 ++++++++++++----
 src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.h   |  1 +
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.cpp b/src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.cpp
index e74bd89..b82433d 100644
--- a/src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.cpp
+++ b/src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.cpp
@@ -59,13 +59,10 @@ QDirectFBPaintDevice::QDirectFBPaintDevice(QDirectFBScreen *scr)
 
 QDirectFBPaintDevice::~QDirectFBPaintDevice()
 {
-    unlockSurface();
     if (QDirectFBScreen::instance()) {
         unlockSurface();
 #ifdef QT_DIRECTFB_SUBSURFACE
-        if (subSurface) {
-            screen->releaseDFBSurface(subSurface);
-        }
+        releaseSubSurface();
 #endif
         if (dfbSurface) {
             screen->releaseDFBSurface(dfbSurface);
@@ -207,6 +204,17 @@ QPaintEngine *QDirectFBPaintDevice::paintEngine() const
     return engine;
 }
 
+#ifdef QT_DIRECTFB_SUBSURFACE
+void QDirectFBPaintDevice::releaseSubSurface()
+{
+    Q_ASSERT(QDirectFBScreen::instance());
+    if (subSurface) {
+        screen->releaseDFBSurface(subSurface);
+        subSurface = 0;
+    }
+}
+#endif
+
 QT_END_NAMESPACE
 
 #endif // QT_NO_QWS_DIRECTFB
diff --git a/src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.h b/src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.h
index cdd2bea..adb80e2 100644
--- a/src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.h
+++ b/src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.h
@@ -86,6 +86,7 @@ protected:
 
     IDirectFBSurface *dfbSurface;
 #ifdef QT_DIRECTFB_SUBSURFACE
+    void releaseSubSurface();
     IDirectFBSurface *subSurface;
     friend class QDirectFBPaintEnginePrivate;
     bool syncPending;
-- 
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