From 1113344ece060bb7386ea540becbf59f9c8320ea Mon Sep 17 00:00:00 2001
From: Jason Barron <jason.barron@nokia.com>
Date: Fri, 8 Oct 2010 11:39:49 +0200
Subject: Crash fix when using the runtime graphics system on Symbian.

If QWidget::destroy() is called (perhaps by setParent) then the window
surface is deleted by the destructor of QSymbianControl instead of in
the "normal" place which is ~QWidget(). This means that we should not
attempt to use the RWindow in the window surface because it is in the
process of being destroyed.

Reviewed-by: Jani Hautakangas
---
 src/gui/painting/qwindowsurface_s60.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/gui/painting/qwindowsurface_s60.cpp b/src/gui/painting/qwindowsurface_s60.cpp
index 8bac1f5..ea19fcd 100644
--- a/src/gui/painting/qwindowsurface_s60.cpp
+++ b/src/gui/painting/qwindowsurface_s60.cpp
@@ -101,9 +101,11 @@ QS60WindowSurface::~QS60WindowSurface()
             // Issue empty redraw to clear the UI surface
 
             QWidget *w = window();
-            RWindow *const window = static_cast<RWindow *>(w->winId()->DrawableWindow());
-            window->BeginRedraw();
-            window->EndRedraw();
+            if (w->testAttribute(Qt::WA_WState_Created)) {
+                RWindow *const window = static_cast<RWindow *>(w->winId()->DrawableWindow());
+                window->BeginRedraw();
+                window->EndRedraw();
+            }
         }
     }
 #endif
-- 
cgit v0.12


From edddadd88950f22f6d813e50acdcf2711d3d5a84 Mon Sep 17 00:00:00 2001
From: Jason Barron <jason.barron@nokia.com>
Date: Tue, 12 Oct 2010 10:58:11 +0200
Subject: Add support for Qt::WA_TranslucentBackground with OpenVG on Symbian^3

S^3 does not have a client side API to support semi-transparent EGL
surfaces so if this flag is enabled for a particular widget, then we
should return a raster surface instead of a VG surface. Raster surfaces
can still be semi-transparent but will be slower to render to.

Task-number: QTBUG-14400
Reviewed-by: Jani Hautakangas
Reviewed-by: Gareth Stockwell
Reviewed-by: Sami Merila
---
 src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp b/src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp
index 2c7c0b7..9674233 100644
--- a/src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp
+++ b/src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp
@@ -42,6 +42,9 @@
 #include "qgraphicssystem_vg_p.h"
 #include <QtOpenVG/private/qpixmapdata_vg_p.h>
 #include <QtOpenVG/private/qwindowsurface_vg_p.h>
+#if defined(Q_OS_SYMBIAN) && !defined(Q_SYMBIAN_SEMITRANSPARENT_BG_SURFACE)
+#include <QtGui/private/qwidget_p.h>
+#endif
 
 QT_BEGIN_NAMESPACE
 
@@ -64,6 +67,11 @@ QPixmapData *QVGGraphicsSystem::createPixmapData(QPixmapData::PixelType type) co
 
 QWindowSurface *QVGGraphicsSystem::createWindowSurface(QWidget *widget) const
 {
+#if defined(Q_OS_SYMBIAN) && !defined(Q_SYMBIAN_SEMITRANSPARENT_BG_SURFACE)
+    QWidgetPrivate *d = qt_widget_private(widget);
+    if (!d->isOpaque && widget->testAttribute(Qt::WA_TranslucentBackground))
+        return d->createDefaultWindowSurface_sys();
+#endif
     return new QVGWindowSurface(widget);
 }
 
-- 
cgit v0.12