3 files changed, 12 insertions, 4 deletions
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index 4ee2301..6934abc 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -4285,6 +4285,12 @@ static void _q_paintIntoCache(QPixmap *pix, QGraphicsItem *item, const QRegion &
     if (!subPix.isNull()) {
         // Blit the subpixmap into the main pixmap.
         pixmapPainter.begin(pix);
+        if (item->cacheMode() == QGraphicsItem::DeviceCoordinateCache
+            && itemToPixmap.type() > QTransform::TxTranslate) {
+            pixmapPainter.setCompositionMode(QPainter::CompositionMode_SourceAtop);
+        } else {
+            pixmapPainter.setCompositionMode(QPainter::CompositionMode_Source);
+        }
         pixmapPainter.setClipRegion(pixmapExposed);
         pixmapPainter.drawPixmap(br.topLeft(), subPix);
         pixmapPainter.end();
diff --git a/src/gui/graphicsview/qgraphicswidget.cpp b/src/gui/graphicsview/qgraphicswidget.cpp
index 5e01785..f42fe4f 100644
--- a/src/gui/graphicsview/qgraphicswidget.cpp
+++ b/src/gui/graphicsview/qgraphicswidget.cpp
@@ -384,7 +384,7 @@ void QGraphicsWidget::setGeometry(const QRectF &rect)
     }
     QSizeF oldSize = size();
     QGraphicsLayoutItem::setGeometry(newGeom);
-
+    emit geometryChanged();
     // Send resize event
     bool resized = newGeom.size() != oldSize;
     if (resized) {
diff --git a/src/gui/graphicsview/qgraphicswidget.h b/src/gui/graphicsview/qgraphicswidget.h
index f1d382b..468a134 100644
--- a/src/gui/graphicsview/qgraphicswidget.h
+++ b/src/gui/graphicsview/qgraphicswidget.h
@@ -73,7 +73,7 @@ class Q_GUI_EXPORT QGraphicsWidget : public QGraphicsObject, public QGraphicsLay
     Q_PROPERTY(QPalette palette READ palette WRITE setPalette)
     Q_PROPERTY(QFont font READ font WRITE setFont)
     Q_PROPERTY(Qt::LayoutDirection layoutDirection READ layoutDirection WRITE setLayoutDirection RESET unsetLayoutDirection)
-    Q_PROPERTY(QSizeF size READ size WRITE resize)
+    Q_PROPERTY(QSizeF size READ size WRITE resize NOTIFY geometryChanged)
     Q_PROPERTY(QSizeF minimumSize READ minimumSize WRITE setMinimumSize)
     Q_PROPERTY(QSizeF preferredSize READ preferredSize WRITE setPreferredSize)
     Q_PROPERTY(QSizeF maximumSize READ maximumSize WRITE setMaximumSize)
@@ -81,11 +81,10 @@ class Q_GUI_EXPORT QGraphicsWidget : public QGraphicsObject, public QGraphicsLay
     Q_PROPERTY(Qt::FocusPolicy focusPolicy READ focusPolicy WRITE setFocusPolicy)
     Q_PROPERTY(Qt::WindowFlags windowFlags READ windowFlags WRITE setWindowFlags)
     Q_PROPERTY(QString windowTitle READ windowTitle WRITE setWindowTitle)
-    Q_PROPERTY(QRectF geometry READ geometry WRITE setGeometry)
+    Q_PROPERTY(QRectF geometry READ geometry WRITE setGeometry NOTIFY geometryChanged)
 public:
     QGraphicsWidget(QGraphicsItem *parent = 0, Qt::WindowFlags wFlags = 0);
     ~QGraphicsWidget();
-
     QGraphicsLayout *layout() const;
     void setLayout(QGraphicsLayout *layout);
     void adjustSize();
@@ -175,6 +174,9 @@ public:
     using QObject::children;
 #endif
 
+Q_SIGNALS:
+    void geometryChanged();
+
 public Q_SLOTS:
     bool close();