Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2:
  Mark QFileDialog::Options as a Q_FLAGS
  fix tst_QDockWidget::taskQTBUG_9758_undockedGeometry on Linux
  Fixed scrolling bugs in widget graphics effect backend.
  Fixed source pixmap bug in widget graphics effect backend.
  Fix crash with stylesheet if widget change style in the changeEvent
  Fix textdrawing under GL on N900.
  Fixed bug in QIODevice::read after first reading 0 bytes.
  Fix auto-test failure on Mac/Linux/QWS.
  Some EGL implementations does not return a EGLNativeDisplayType
  Fixed the sizing of the dock area with fixed size dock widgets
  QSortFilterProxyModel: Warning or assert failure
  Performance issue with QGraphicsItem::ItemClipsChildrenToShape.
  Fixes crash in QGraphicsItem::mouseMove for untransformable items.
  Pack Graphics View booleans in quint32 bit fields.
  Fixes regression: SVG image loading would fail from QBuffer with pos!=0
  Fix a bug in QGraphicsItem::scroll.
  Fixed the position of the dock widget when undocked

1 files changed, 28 insertions, 5 deletions

diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index 326f130..65edb2a 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -1812,7 +1812,7 @@ void QGraphicsItem::setFlags(GraphicsItemFlags flags)
     const quint32 geomChangeFlagsMask = (ItemClipsChildrenToShape | ItemClipsToShape | ItemIgnoresTransformations | ItemIsSelectable);
     bool fullUpdate = (quint32(flags) & geomChangeFlagsMask) != (d_ptr->flags & geomChangeFlagsMask);
     if (fullUpdate)
-        d_ptr->paintedViewBoundingRectsNeedRepaint = 1;
+        d_ptr->updatePaintedViewBoundingRects(/*children=*/true);
 
     // Keep the old flags to compare the diff.
     GraphicsItemFlags oldFlags = GraphicsItemFlags(d_ptr->flags);
@@ -5432,6 +5432,24 @@ void QGraphicsItemPrivate::removeExtraItemCache()
     unsetExtra(ExtraCacheData);
 }
 
+void QGraphicsItemPrivate::updatePaintedViewBoundingRects(bool updateChildren)
+{
+    if (!scene)
+        return;
+
+    for (int i = 0; i < scene->d_func()->views.size(); ++i) {
+        QGraphicsViewPrivate *viewPrivate = scene->d_func()->views.at(i)->d_func();
+        QRect rect = paintedViewBoundingRects.value(viewPrivate->viewport);
+        rect.translate(viewPrivate->dirtyScrollOffset);
+        viewPrivate->updateRect(rect);
+    }
+
+    if (updateChildren) {
+        for (int i = 0; i < children.size(); ++i)
+            children.at(i)->d_ptr->updatePaintedViewBoundingRects(true);
+    }
+}
+
 // Traverses all the ancestors up to the top-level and updates the pointer to
 // always point to the top-most item that has a dirty scene transform.
 // It then backtracks to the top-most dirty item and start calculating the
@@ -5635,8 +5653,9 @@ void QGraphicsItem::scroll(qreal dx, qreal dy, const QRectF &rect)
                 // Adjust with 2 pixel margin. Notice the loss of precision
                 // when converting to QRect.
                 int adjust = 2;
+                QRectF scrollRect = !rect.isNull() ? rect : boundingRect();
                 QRectF br = boundingRect().adjusted(-adjust, -adjust, adjust, adjust);
-                QRect irect = rect.toRect().translated(-br.x(), -br.y());
+                QRect irect = scrollRect.toRect().translated(-br.x(), -br.y());
 
                 pix.scroll(dx, dy, irect);
 
@@ -5644,11 +5663,11 @@ void QGraphicsItem::scroll(qreal dx, qreal dy, const QRectF &rect)
 
                 // Translate the existing expose.
                 foreach (QRectF exposedRect, c->exposed)
-                    c->exposed += exposedRect.translated(dx, dy) & rect;
+                    c->exposed += exposedRect.translated(dx, dy) & scrollRect;
 
                 // Calculate exposure.
                 QRegion exposed;
-                QRect r = rect.toRect();
+                QRect r = scrollRect.toRect();
                 exposed += r;
                 exposed -= r.translated(dx, dy);
                 foreach (QRect rect, exposed.rects())
@@ -7131,7 +7150,11 @@ void QGraphicsItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
                     // calculate their diff by mapping viewport coordinates
                     // directly to parent coordinates.
                     // COMBINE
-                    QTransform viewToParentTransform = (item->d_func()->transformData->computedFullTransform().translate(item->d_ptr->pos.x(), item->d_ptr->pos.y()))
+                    QTransform itemTransform;
+                    if (item->d_ptr->transformData)
+                        itemTransform = item->d_ptr->transformData->computedFullTransform();
+                    itemTransform.translate(item->d_ptr->pos.x(), item->d_ptr->pos.y());
+                    QTransform viewToParentTransform = itemTransform
                                                        * (item->sceneTransform() * view->viewportTransform()).inverted();
                     currentParentPos = viewToParentTransform.map(QPointF(view->mapFromGlobal(event->screenPos())));
                     buttonDownParentPos = viewToParentTransform.map(QPointF(view->mapFromGlobal(event->buttonDownScreenPos(Qt::LeftButton))));