Fix window transparency on Symbian.

In the create_sys() function where native handles are created, we were
only looking at the "isOpaque" flag to determine if a window should be
translucent or not. This is not the correct thing to do because
transparency should only be granted if the application explicitly sets
the Qt::WA_TranslucentBackground flag.

The fix is to defer the transparency decision to s60UpdateIsOpaque()
which does the right thing.

Reviewed-by: Jani Hautakangas

1 files changed, 1 insertions, 10 deletions

diff --git a/src/gui/kernel/qwidget_s60.cpp b/src/gui/kernel/qwidget_s60.cpp
index 7fd9289..c30814b 100644
--- a/src/gui/kernel/qwidget_s60.cpp
+++ b/src/gui/kernel/qwidget_s60.cpp
@@ -387,16 +387,7 @@ void QWidgetPrivate::create_sys(WId window, bool /* initializeWindow */, bool de
                 | EPointerFilterMove | EPointerFilterDrag, 0);
             drawableWindow->EnableVisibilityChangeEvents();
 
-            if (!isOpaque) {
-                RWindow *const window = static_cast<RWindow *>(drawableWindow);
-#ifdef Q_SYMBIAN_SEMITRANSPARENT_BG_SURFACE
-                window->SetSurfaceTransparency(true);
-#else
-                const TDisplayMode displayMode = static_cast<TDisplayMode>(window->SetRequiredDisplayMode(EColor16MA));
-                if (window->SetTransparencyAlphaChannel() == KErrNone)
-                    window->SetBackgroundColor(TRgb(255, 255, 255, 0));
-#endif
-            }
+            s60UpdateIsOpaque();
         }
 
         q->setAttribute(Qt::WA_WState_Created);