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, 51 insertions, 0 deletions

diff --git a/src/gui/kernel/qt_s60_p.h b/src/gui/kernel/qt_s60_p.h
index e24405c..da44016 100644
--- a/src/gui/kernel/qt_s60_p.h
+++ b/src/gui/kernel/qt_s60_p.h
@@ -77,6 +77,8 @@
 #include <akncontext.h>             // CAknContextPane
 #include <eikspane.h>               // CEikStatusPane
 #include <AknPopupFader.h>          // MAknFadedComponent and TAknPopupFader
+#include <gfxtranseffect/gfxtranseffect.h> // BeginFullScreen
+#include <akntranseffect.h> // BeginFullScreen
 #endif
 
 QT_BEGIN_NAMESPACE
@@ -85,6 +87,9 @@ QT_BEGIN_NAMESPACE
 // system events seems to start with 0x10
 const TInt KInternalStatusPaneChange = 0x50000000;
 
+// For BeginFullScreen().
+const TUint KQtAppExitFlag = 0x400;
+
 static const int qt_symbian_max_screens = 4;
 
 //this macro exists because EColor16MAP enum value doesn't exist in Symbian OS 9.2
@@ -193,6 +198,9 @@ public:
 
     int nativeScreenWidthInPixels;
     int nativeScreenHeightInPixels;
+
+    int beginFullScreenCalled : 1;
+    int endFullScreenCalled : 1;
 };
 
 Q_AUTOTEST_EXPORT QS60Data* qGlobalS60Data();
@@ -334,6 +342,8 @@ inline QS60Data::QS60Data()
 #ifdef Q_OS_SYMBIAN
   ,s60InstalledTrapHandler(0)
 #endif
+  ,beginFullScreenCalled(0),
+  endFullScreenCalled(0)
 {
 }
 
@@ -565,6 +575,47 @@ void qt_symbian_set_cursor_visible(bool visible);
 bool qt_symbian_is_cursor_visible();
 #endif
 
+static inline bool qt_beginFullScreenEffect()
+{
+#ifdef Q_WS_S60
+    // Only for post-S^3. On earlier versions the system transition effects
+    // may not be able to capture the non-Avkon content, leading to confusing
+    // looking effects, so just skip the whole thing.
+    if (S60->beginFullScreenCalled || QSysInfo::s60Version() <= QSysInfo::SV_S60_5_2)
+        return false;
+    S60->beginFullScreenCalled = true;
+    // For Avkon apps the app-exit effect is triggered from CAknAppUi::PrepareToExit().
+    // That is good for Avkon apps, but in case of Qt the RWindows are destroyed earlier.
+    // Therefore we call BeginFullScreen() ourselves.
+    GfxTransEffect::BeginFullScreen(AknTransEffect::EApplicationExit,
+        TRect(0, 0, 0, 0),
+        AknTransEffect::EParameterType,
+        AknTransEffect::GfxTransParam(S60->uid,
+            AknTransEffect::TParameter::EAvkonCheck | KQtAppExitFlag));
+    return true;
+#endif
+}
+
+static inline void qt_abortFullScreenEffect()
+{
+#ifdef Q_WS_S60
+    if (!S60->beginFullScreenCalled || QSysInfo::s60Version() <= QSysInfo::SV_S60_5_2)
+        return;
+    GfxTransEffect::AbortFullScreen();
+    S60->beginFullScreenCalled = S60->endFullScreenCalled = false;
+#endif
+}
+
+static inline void qt_endFullScreenEffect()
+{
+#ifdef Q_WS_S60
+    if (S60->endFullScreenCalled || QSysInfo::s60Version() <= QSysInfo::SV_S60_5_2)
+        return;
+    S60->endFullScreenCalled = true;
+    GfxTransEffect::EndFullScreen();
+#endif
+}
+
 QT_END_NAMESPACE
 
 #endif // QT_S60_P_H