Merge branch '4.6' of git@scm.dev.nokia.troll.no:qt/qt-s60-public into 4.6-staging2

3 files changed, 79 insertions, 8 deletions

diff --git a/src/gui/kernel/qapplication_s60.cpp b/src/gui/kernel/qapplication_s60.cpp
index 89d961c..ab57c32 100644
--- a/src/gui/kernel/qapplication_s60.cpp
+++ b/src/gui/kernel/qapplication_s60.cpp
@@ -823,6 +823,12 @@ void QSymbianControl::Draw(const TRect& controlRect) const
     if (!engine)
         return;
 
+    const bool sendNativePaintEvents = qwidget->d_func()->extraData()->receiveNativePaintEvents;
+    if (sendNativePaintEvents) {
+        const QRect r = qt_TRect2QRect(controlRect);
+        QMetaObject::invokeMethod(qwidget, "beginNativePaintEvent", Qt::DirectConnection, Q_ARG(QRect, r));
+    }
+
     // Map source rectangle into coordinates of the backing store.
     const QPoint controlBase(controlRect.iTl.iX, controlRect.iTl.iY);
     const QPoint backingStoreBase = qwidget->mapTo(qwidget->window(), controlBase);
@@ -833,14 +839,48 @@ void QSymbianControl::Draw(const TRect& controlRect) const
         CFbsBitmap *bitmap = s60Surface->symbianBitmap();
         CWindowGc &gc = SystemGc();
 
-        if(!qwidget->d_func()->extraData()->disableBlit) {
+        switch(qwidget->d_func()->extraData()->nativePaintMode) {
+        case QWExtra::Disable:
+            // Do nothing
+            break;
+
+        case QWExtra::Blit:
             if (qwidget->d_func()->isOpaque)
                 gc.SetDrawMode(CGraphicsContext::EDrawModeWriteAlpha);
             gc.BitBlt(controlRect.iTl, bitmap, backingStoreRect);
+            break;
+
+        case QWExtra::ZeroFill:
+            if (Window().DisplayMode() == EColor16MA) {
+                gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
+                gc.SetDrawMode(CGraphicsContext::EDrawModeWriteAlpha);
+                gc.SetBrushColor(TRgb::Color16MA(0));
+                gc.Clear(controlRect);
+            } else {
+                gc.SetBrushColor(TRgb(0x000000));
+                gc.Clear(controlRect);
+            };
+            break;
+
+        default:
+            Q_ASSERT(false);
         }
     } else {
         surface->flush(qwidget, QRegion(qt_TRect2QRect(backingStoreRect)), QPoint());
     }
+
+    if (sendNativePaintEvents) {
+        const QRect r = qt_TRect2QRect(controlRect);
+        // The draw ops aren't actually sent to WSERV until the graphics
+        // context is deactivated, which happens in the function calling
+        // this one.  We therefore delay the delivery of endNativePaintEvent,
+        // to ensure that drawing has completed by the time the widget
+        // receives the event.  Note that, if the widget needs to ensure
+        // that the draw ops have actually been executed into the output
+        // framebuffer, a call to RWsSession::Flush is required in the
+        // endNativePaintEvent implementation.
+        QMetaObject::invokeMethod(qwidget, "endNativePaintEvent", Qt::QueuedConnection, Q_ARG(QRect, r));
+    }
 }
 
 void QSymbianControl::SizeChanged()
diff --git a/src/gui/kernel/qwidget_p.h b/src/gui/kernel/qwidget_p.h
index 66efcb5..04cf4bb 100644
--- a/src/gui/kernel/qwidget_p.h
+++ b/src/gui/kernel/qwidget_p.h
@@ -230,12 +230,42 @@ struct QWExtra {
 #elif defined(Q_OS_SYMBIAN) // <----------------------------------------------------- Symbian
     uint activated : 1; // RWindowBase::Activated has been called
 
-    // If set, QSymbianControl::Draw does not blit this widget
-    // This is to allow, for use cases such as video, widgets which, from the Qt point
-    // of view, are just placeholders in the scene.  For these widgets, any necessary
-    // drawing to the UI framebuffer is done by the relevant Symbian subsystem.  For
-    // video rendering, this would be an MMF controller, or MDF post-processor.
-    uint disableBlit : 1;
+    /**
+     * Defines the behaviour of QSymbianControl::Draw.
+     */
+    enum NativePaintMode {
+        /**
+         * Normal drawing mode: blits the required region of the backing store
+         * via WSERV.
+         */
+        Blit,
+
+        /**
+         * Disable drawing for this widget.
+         */
+        Disable,
+
+        /**
+         * Paint zeros into the WSERV framebuffer, using BitGDI APIs.  For windows
+         * with an EColor16MU display mode, zero is written only into the R, G and B
+         * channels of the pixel.
+         */
+        ZeroFill,
+
+        Default = Blit
+    };
+
+    NativePaintMode nativePaintMode : 2;
+
+    /**
+     * If this bit is set, each native widget receives the signals from the
+     * Symbian control immediately before and immediately after draw ops are
+     * sent to the window server for this control:
+     *      void beginNativePaintEvent(const QRect &paintRect);
+     *      void endNativePaintEvent(const QRect &paintRect);
+     */
+    uint receiveNativePaintEvents : 1;
+
 #endif
 };
 
diff --git a/src/gui/kernel/qwidget_s60.cpp b/src/gui/kernel/qwidget_s60.cpp
index 359df2a..37614c7 100644
--- a/src/gui/kernel/qwidget_s60.cpp
+++ b/src/gui/kernel/qwidget_s60.cpp
@@ -881,7 +881,8 @@ void QWidgetPrivate::deleteTLSysExtra()
 void QWidgetPrivate::createSysExtra()
 {
     extra->activated = 0;
-    extra->disableBlit = 0;
+    extra->nativePaintMode = QWExtra::Default;
+    extra->receiveNativePaintEvents = 0;
 }
 
 void QWidgetPrivate::deleteSysExtra()