[Qt] Tiles not painted after wheel or keyboard scroll.

https://bugs.webkit.org/show_bug.cgi?id=87358

Patch by Allan Sandfeld Jensen <allan.jensen@nokia.com> on 2012-05-24
Reviewed by Kenneth Rohde Christiansen.

After performing a scroll requested from the WebProcess we also need
to inform the painting layer of the viewport change.

* UIProcess/qt/QtViewportInteractionEngine.cpp:
(WebKit::QtViewportInteractionEngine::pagePositionRequest):

Canonical link: https://commits.webkit.org/105111@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@118342 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebKit2/ChangeLog

@@ -1,3 +1,16 @@
+2012-05-24  Allan Sandfeld Jensen  <allan.jensen@nokia.com>
+
+        [Qt] Tiles not painted after wheel or keyboard scroll.
+        https://bugs.webkit.org/show_bug.cgi?id=87358
+
+        Reviewed by Kenneth Rohde Christiansen.
+
+        After performing a scroll requested from the WebProcess we also need
+        to inform the painting layer of the viewport change.
+
+        * UIProcess/qt/QtViewportInteractionEngine.cpp:
+        (WebKit::QtViewportInteractionEngine::pagePositionRequest):
+
 2012-05-24  Andras Becsi  <andras.becsi@nokia.com>
 
         [Qt][WK2] Fix bounce-back animation on pinch->pan

Source/WebKit2/UIProcess/qt/QtViewportInteractionEngine.cpp

@@ -287,6 +287,9 @@ void QtViewportInteractionEngine::pagePositionRequest(const QPoint& pagePosition
     QRectF endVisibleContentRect(endPosition / endItemScale, m_viewport->boundingRect().size() / endItemScale);
 
     setItemRectVisible(endVisibleContentRect);
+
+    // Make sure that tiles all around the viewport will be requested.
+    emit contentViewportChanged(QPointF());
 }
 
 void QtViewportInteractionEngine::touchBegin()