w3c widgets workaround

src/domain/UBGraphicsWidgetItem.cpp

@@ -563,6 +563,9 @@ void UBGraphicsWidgetItem::injectInlineJavaScript()
 
 void UBGraphicsWidgetItem::paint( QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
+    if(!scene() || !scene()->renderingContext())
+        return;
+
     if (scene()->renderingContext() != UBGraphicsScene::Screen)
     {
         painter->drawPixmap(0, 0, snapshot());
@@ -622,52 +625,52 @@ void UBGraphicsWidgetItem::mainFrameLoadFinished (bool ok)
     update(boundingRect());
 }
 
-void UBGraphicsWidgetItem::wheelEvent(QGraphicsSceneWheelEvent *event)
-{
-    if (Delegate()->weelEvent(event))
-    {
-        QGraphicsWebView::wheelEvent(event);
-        event->accept();
-    }
-}
-
-QVariant UBGraphicsWidgetItem::itemChange(GraphicsItemChange change, const QVariant &value)
-{
-    if ((change == QGraphicsItem::ItemSelectedHasChanged) &&  scene()) {
-        if (isSelected())
-            scene()->setActiveWindow(this);
-        else
-            if(scene()->activeWindow() == this)
-                scene()->setActiveWindow(0);
-    }
-
-    QVariant newValue = Delegate()->itemChange(change, value);
-    return QGraphicsWebView::itemChange(change, newValue);
-}
-
-void UBGraphicsWidgetItem::resize(qreal w, qreal h)
-{
-    UBGraphicsWidgetItem::resize(QSizeF(w, h));
-}
-
-
-void UBGraphicsWidgetItem::resize(const QSizeF & pSize)
-{
-    if (pSize != size()) {
-        QGraphicsWebView::setMaximumSize(pSize.width(), pSize.height());
-        QGraphicsWebView::resize(pSize.width(), pSize.height());
-        if (Delegate())
-            Delegate()->positionHandles();
-        if (scene())
-            scene()->setModified(true);
-    }
-}
-
-QSizeF UBGraphicsWidgetItem::size() const
-{
-    return QGraphicsWebView::size();
-}
-
+void UBGraphicsWidgetItem::wheelEvent(QGraphicsSceneWheelEvent *event)
+{
+    if (Delegate()->weelEvent(event))
+    {
+        QGraphicsWebView::wheelEvent(event);
+        event->accept();
+    }
+}
+
+QVariant UBGraphicsWidgetItem::itemChange(GraphicsItemChange change, const QVariant &value)
+{
+    if ((change == QGraphicsItem::ItemSelectedHasChanged) &&  scene()) {
+        if (isSelected())
+            scene()->setActiveWindow(this);
+        else
+            if(scene()->activeWindow() == this)
+                scene()->setActiveWindow(0);
+    }
+
+    QVariant newValue = Delegate()->itemChange(change, value);
+    return QGraphicsWebView::itemChange(change, newValue);
+}
+
+void UBGraphicsWidgetItem::resize(qreal w, qreal h)
+{
+    UBGraphicsWidgetItem::resize(QSizeF(w, h));
+}
+
+
+void UBGraphicsWidgetItem::resize(const QSizeF & pSize)
+{
+    if (pSize != size()) {
+        QGraphicsWebView::setMaximumSize(pSize.width(), pSize.height());
+        QGraphicsWebView::resize(pSize.width(), pSize.height());
+        if (Delegate())
+            Delegate()->positionHandles();
+        if (scene())
+            scene()->setModified(true);
+    }
+}
+
+QSizeF UBGraphicsWidgetItem::size() const
+{
+    return QGraphicsWebView::size();
+}
+
 
 
 UBGraphicsAppleWidgetItem::UBGraphicsAppleWidgetItem(const QUrl& pWidgetUrl, QGraphicsItem *parent)