Merge branch 'qt-4.8-from-4.7' of scm.dev.nokia.troll.no:qt/qt-integration into master-integration

* 'qt-4.8-from-4.7' of scm.dev.nokia.troll.no:qt/qt-integration: (55 commits)
  Fix thread safety regression of QNetworkConfigurationManager
  Fix instability in QNetworkConfigurationManager autotest
  Support word selection list with predictive text from splitview
  Fix softkey icon positioning in S60 5.3
  QDeclarativeMouseArea: block context menu events
  ListViews loses items if all visible items are removed.
  Make TextEdit word selection more natural.
  Clear confusion between QMainWindow and QMainWindowLayout.
  Fix for rounded corners bug in QMenu
  Compile
  QWidgetPrivate::setParent_sys might be using null pointer
  Ensure the TextEdit cursor delegate is repositioned on mouse events.
  Don't crash on an invalid replacementStart from an input method.
  Fix incorrect hardware address on systems without getifaddrs()
  Enable multisampling on Symbian if hw supports it
  Fix QtCoreu.def file error
  Introduce platform extension to QGraphicsSystem
  Fix Symbian/WinsCW build break
  Prevent crash in OpenGL engine when scaling images / pixmaps.
  emit QNetWorkAccessManager::finished on QNetworkReply::abort()
  ...

3 files changed, 40 insertions, 13 deletions

diff --git a/src/opengl/qgl_symbian.cpp b/src/opengl/qgl_symbian.cpp
index 1b41db4..ab37977 100644
--- a/src/opengl/qgl_symbian.cpp
+++ b/src/opengl/qgl_symbian.cpp
@@ -49,6 +49,9 @@
 #include <private/qpaintengine_opengl_p.h>
 #include <private/qwidget_p.h> // to access QWExtra
 #include <private/qnativeimagehandleprovider_p.h>
+#include <private/qapplication_p.h>
+#include <private/qgraphicssystem_p.h>
+#include <private/qgraphicssystemex_symbian_p.h>
 #include "qgl_egl_p.h"
 #include "qpixmapdata_gl_p.h"
 #include "qgltexturepool_p.h"
@@ -180,6 +183,15 @@ bool QGLContext::chooseContext(const QGLContext* shareContext) // almost same as
         d->ownsEglContext = true;
         d->eglContext->setApi(QEgl::OpenGL);
 
+        QGraphicsSystemEx *ex = QApplicationPrivate::graphicsSystem()->platformExtension();
+        QSymbianGraphicsSystemEx *symex = static_cast<QSymbianGraphicsSystemEx*>(ex);
+        if (symex && !symex->hasBCM2727()) {
+            // Most likely we have hw support for multisampling
+            // so let's enable it.
+            d->glFormat.setSampleBuffers(1);
+            d->glFormat.setSamples(4);
+        }
+
 	    // If the device is a widget with WA_TranslucentBackground set, make sure the glFormat
         // has the alpha channel option set:
         if (devType == QInternal::Widget) {
@@ -229,20 +241,20 @@ bool QGLContext::chooseContext(const QGLContext* shareContext) // almost same as
 
         d->eglSurface = QEgl::createSurface(device(), d->eglContext->config());
 
-    eglGetError();  // Clear error state first.
+        eglGetError();  // Clear error state first.
 
 #ifdef QGL_NO_PRESERVED_SWAP
-    eglSurfaceAttrib(QEgl::display(), d->eglSurface,
-            EGL_SWAP_BEHAVIOR, EGL_BUFFER_DESTROYED);
+        eglSurfaceAttrib(QEgl::display(), d->eglSurface,
+                EGL_SWAP_BEHAVIOR, EGL_BUFFER_DESTROYED);
 
-    if (eglGetError() != EGL_SUCCESS)
-        qWarning("QGLContext: could not enable destroyed swap behaviour");
+        if (eglGetError() != EGL_SUCCESS)
+            qWarning("QGLContext: could not enable destroyed swap behaviour");
 #else
-    eglSurfaceAttrib(QEgl::display(), d->eglSurface,
-            EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
+        eglSurfaceAttrib(QEgl::display(), d->eglSurface,
+                EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
 
-    if (eglGetError() != EGL_SUCCESS)
-        qWarning("QGLContext: could not enable preserved swap behaviour");
+        if (eglGetError() != EGL_SUCCESS)
+            qWarning("QGLContext: could not enable preserved swap behaviour");
 #endif
 
         setWindowCreated(true);
diff --git a/src/opengl/qgraphicssystem_gl.cpp b/src/opengl/qgraphicssystem_gl.cpp
index 0aa3c2e..5a01d8c 100644
--- a/src/opengl/qgraphicssystem_gl.cpp
+++ b/src/opengl/qgraphicssystem_gl.cpp
@@ -104,11 +104,17 @@ QWindowSurface *QGLGraphicsSystem::createWindowSurface(QWidget *widget) const
 
     return new QGLWindowSurface(widget);
 }
-#ifdef QGL_USE_TEXTURE_POOL
-void QGLGraphicsSystem::releaseCachedResources()
+#ifdef Q_OS_SYMBIAN
+void QGLGraphicsSystem::releaseCachedGpuResources()
 {
     QGLTexturePool::instance()->hibernate();
 }
+
+QGraphicsSystemEx* QGLGraphicsSystem::platformExtension()
+{
+    return this;
+}
 #endif
+
 QT_END_NAMESPACE
 
diff --git a/src/opengl/qgraphicssystem_gl_p.h b/src/opengl/qgraphicssystem_gl_p.h
index 5829dcc..5372443 100644
--- a/src/opengl/qgraphicssystem_gl_p.h
+++ b/src/opengl/qgraphicssystem_gl_p.h
@@ -55,11 +55,19 @@
 
 #include "private/qgraphicssystem_p.h"
 
+#ifdef Q_OS_SYMBIAN
+#include "private/qgraphicssystemex_symbian_p.h"
+#endif
+
 #include <QMap>
 
 QT_BEGIN_NAMESPACE
 
 class Q_OPENGL_EXPORT QGLGraphicsSystem : public QGraphicsSystem
+#ifdef Q_OS_SYMBIAN
+    , public QSymbianGraphicsSystemEx
+#endif
+
 {
 public:
     QGLGraphicsSystem(bool useX11GL);
@@ -67,8 +75,9 @@ public:
     QPixmapData *createPixmapData(QPixmapData::PixelType type) const;
     QWindowSurface *createWindowSurface(QWidget *widget) const;
 
-#ifdef QGL_USE_TEXTURE_POOL
-    void releaseCachedResources();
+#ifdef Q_OS_SYMBIAN
+    void releaseCachedGpuResources();
+    QGraphicsSystemEx* platformExtension();
 #endif
 private:
     bool m_useX11GL;