Page Visibility API for QtWebKit 2.3 modified patch from https://bugs.webkit.org/show_bug.cgi?id=109422

page_visibility.patch

4926e111898c9e2e2da040b1c2776e0c5503afb1
diff --git a/Source/WebKit/qt/Api/qwebpage.cpp b/Source/WebKit/qt/Api/qwebpage.cpp
index 053c4d8..aacad16 100644
--- a/Source/WebKit/qt/Api/qwebpage.cpp
+++ b/Source/WebKit/qt/Api/qwebpage.cpp
@@ -674,6 +674,18 @@ void QWebPagePrivate::updateEditorActions()
     updateAction(QWebPage::AlignRight);
 }
 
+void QWebPagePrivate::setVisibilityState(int visibilityState, bool isInitialState)
+{
+#if ENABLE(PAGE_VISIBILITY_API)
+    if (!page)
+        return;
+    page->setVisibilityState(static_cast<WebCore::PageVisibilityState>(visibilityState), isInitialState);
+#else
+    Q_UNUSED(visibilityState);
+    Q_UNUSED(isInitialState);
+#endif
+}
+
 void QWebPagePrivate::timerEvent(QTimerEvent *ev)
 {
     int timerId = ev->timerId();
@@ -1029,6 +1041,11 @@ void QWebPagePrivate::leaveEvent(QEvent*)
     mouseMoveEvent(&fakeEvent);
 }
 
+void QWebPage::setVisibilityState(int visibilityState, bool isInitialState)
+{
+    d->setVisibilityState(visibilityState, isInitialState);
+}
+
 /*!
     \property QWebPage::palette
     \brief the page's palette
@@ -1946,6 +1963,10 @@ QWebPage::QWebPage(QObject *parent)
 {
     setView(qobject_cast<QWidget*>(parent));
 
+#if ENABLE(PAGE_VISIBILITY_API)
+    setVisibilityState(PageVisibilityStateHidden, true);
+#endif
+
     connect(this, SIGNAL(loadProgress(int)), this, SLOT(_q_onLoadProgressChanged(int)));
 #ifndef NDEBUG
     connect(QCoreApplication::instance(), SIGNAL(aboutToQuit()), this, SLOT(_q_cleanupLeakMessages()));
diff --git a/Source/WebKit/qt/Api/qwebpage.h b/Source/WebKit/qt/Api/qwebpage.h
index 3eedfeb..926f8a8 100644
--- a/Source/WebKit/qt/Api/qwebpage.h
+++ b/Source/WebKit/qt/Api/qwebpage.h
@@ -314,6 +314,8 @@ public:
     void setContentEditable(bool editable);
     bool isContentEditable() const;
 
+    void setVisibilityState(int visibilityState, bool isInitialState);
+
 #ifndef QT_NO_CONTEXTMENU
     bool swallowContextMenuEvent(QContextMenuEvent *event);
 #endif
diff --git a/Source/WebKit/qt/Api/qwebpage_p.h b/Source/WebKit/qt/Api/qwebpage_p.h
index 7943229..3ad53b1 100644
--- a/Source/WebKit/qt/Api/qwebpage_p.h
+++ b/Source/WebKit/qt/Api/qwebpage_p.h
@@ -95,6 +95,8 @@ public:
     void updateNavigationActions();
     void updateEditorActions();
 
+    void setVisibilityState(int, bool);
+
     QColor colorSelectionRequested(const QColor& selectedColor);
 
     void timerEvent(QTimerEvent*);
diff --git a/Source/WebKit/qt/Api/qwebview.cpp b/Source/WebKit/qt/Api/qwebview.cpp
index 8f9dc15..2e83f36 100644
--- a/Source/WebKit/qt/Api/qwebview.cpp
+++ b/Source/WebKit/qt/Api/qwebview.cpp
@@ -739,8 +739,13 @@ bool QWebView::event(QEvent *e)
 
             // Always return true so that we'll receive also TouchUpdate and TouchEnd events
             return true;
-        } else if (e->type() == QEvent::Leave)
+        } else if (e->type() == QEvent::Leave) {
             d->page->event(e);
+        } else if (e->type() == QEvent::Show || e->type() == QEvent::WindowActivate) {
+            d->page->setVisibilityState(WebCore::PageVisibilityStateVisible, false);
+        } else if (e->type() == QEvent::Hide || e->type() == QEvent::WindowDeactivate) {
+            d->page->setVisibilityState(WebCore::PageVisibilityStateHidden, false);
+        }
     }
 
     return QWidget::event(e);
@@ -1051,6 +1056,16 @@ void QWebView::changeEvent(QEvent *e)
         d->page->setPalette(palette());
     QWidget::changeEvent(e);
 }
+/*!\reimp
+*/
+void QWebView::setVisible(bool visible)
+{
+    QWidget::setVisible(visible);
+#if ENABLE(PAGE_VISIBILITY_API)
+    if (d->page)
+        d->page->setVisibilityState(visible ? WebCore::PageVisibilityStateVisible : WebCore::PageVisibilityStateHidden, false);
+#endif
+}
 
 /*!
     \fn void QWebView::titleChanged(const QString &title)
diff --git a/Source/WebKit/qt/Api/qwebview.h b/Source/WebKit/qt/Api/qwebview.h
index 90d0a8e..bfd9747 100644
--- a/Source/WebKit/qt/Api/qwebview.h
+++ b/Source/WebKit/qt/Api/qwebview.h
@@ -138,6 +138,7 @@ protected:
     virtual QWebView *createWindow(QWebPage::WebWindowType type);
 
     virtual void changeEvent(QEvent*);
+    virtual void setVisible(bool);
     virtual void mouseMoveEvent(QMouseEvent*);
     virtual void mousePressEvent(QMouseEvent*);
     virtual void mouseDoubleClickEvent(QMouseEvent*);