Trigger fullscreen transition effects properly on app exit.

Avkon calls BeginFullScreen() and EndFullScreen() to trigger the
fullscreen system transition effects for application exit, however
the calls are made too late for Qt apps because the widgets are
already destroyed. Instead, the effects are triggered explicitly
from Qt, before closing the widgets, or from aboutToQuit, whichever
comes first.

Task-number: QT-4718
Reviewed-by: Jani Hautakangas

1 files changed, 16 insertions, 1 deletions

diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index 59aec91af4..f906bbfa9c 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -128,6 +128,10 @@ extern bool qt_wince_is_pocket_pc();  //qguifunctions_wince.cpp
 
 //#define ALIEN_DEBUG
 
+#if defined(Q_OS_SYMBIAN)
+#include "qt_s60_p.h"
+#endif
+
 static void initResources()
 {
 #if defined(Q_WS_WINCE)
@@ -2432,6 +2436,11 @@ bool QApplication::event(QEvent *e)
 {
     Q_D(QApplication);
     if(e->type() == QEvent::Close) {
+#if defined(Q_OS_SYMBIAN)
+        // In order to have proper application-exit effects on Symbian, certain
+        // native APIs have to be called _before_ closing/destroying the widgets.
+        bool effectStarted = qt_beginFullScreenEffect();
+#endif
         QCloseEvent *ce = static_cast<QCloseEvent*>(e);
         ce->accept();
         closeAllWindows();
@@ -2445,8 +2454,14 @@ bool QApplication::event(QEvent *e)
                 break;
             }
         }
-        if(ce->isAccepted())
+        if (ce->isAccepted()) {
             return true;
+        } else {
+#if defined(Q_OS_SYMBIAN)
+            if (effectStarted)
+                qt_abortFullScreenEffect();
+#endif
+        }
     } else if(e->type() == QEvent::LanguageChange) {
 #ifndef QT_NO_TRANSLATION
         setLayoutDirection(qt_detectRTLLanguage()?Qt::RightToLeft:Qt::LeftToRight);