Do not cache the sizeHint() while we're in QGraphicsWidget's constructor.

Do not send a QFontChange event before the item has been polished. This
is because we cannot call a virtual function while we're in the ctor.
This is basically the same as how we do it in QWidget.

Task-number: 246215
Reviewed-by: alexis

4 files changed, 41 insertions, 29 deletions

diff --git a/src/gui/graphicsview/qgraphicswidget.cpp b/src/gui/graphicsview/qgraphicswidget.cpp
index 5cc18f9..64ec0e7 100644
--- a/src/gui/graphicsview/qgraphicswidget.cpp
+++ b/src/gui/graphicsview/qgraphicswidget.cpp
@@ -1269,6 +1269,8 @@ bool QGraphicsWidget::event(QEvent *event)
         break;
     case QEvent::Polish:
         polishEvent();
+        d->polished = true;
+        d->updateFont(d->font);
         break;
     case QEvent::WindowActivate:
     case QEvent::WindowDeactivate:
diff --git a/src/gui/graphicsview/qgraphicswidget_p.cpp b/src/gui/graphicsview/qgraphicswidget_p.cpp
index 641409d..789f8da 100644
--- a/src/gui/graphicsview/qgraphicswidget_p.cpp
+++ b/src/gui/graphicsview/qgraphicswidget_p.cpp
@@ -274,6 +274,8 @@ void QGraphicsWidgetPrivate::updateFont(const QFont &font)
         }
     }
 
+    if (!polished)
+        return;
     // Notify change.
     QEvent event(QEvent::FontChange);
     QApplication::sendEvent(q, &event);
diff --git a/src/gui/graphicsview/qgraphicswidget_p.h b/src/gui/graphicsview/qgraphicswidget_p.h
index afa6812..455a129 100644
--- a/src/gui/graphicsview/qgraphicswidget_p.h
+++ b/src/gui/graphicsview/qgraphicswidget_p.h
@@ -85,6 +85,7 @@ public:
           inheritedPaletteResolveMask(0),
           inheritedFontResolveMask(0),
           inSetGeometry(0),
+          polished(0),
           focusPolicy(Qt::NoFocus),
           focusNext(0),
           focusPrev(0),
@@ -193,6 +194,7 @@ public:
     }
     quint32 attributes : 10;
     quint32 inSetGeometry : 1;
+    quint32 polished: 1;
 
     // Focus
     Qt::FocusPolicy focusPolicy;
diff --git a/tests/auto/qgraphicswidget/tst_qgraphicswidget.cpp b/tests/auto/qgraphicswidget/tst_qgraphicswidget.cpp
index 86d1acb..f25a079 100644
--- a/tests/auto/qgraphicswidget/tst_qgraphicswidget.cpp
+++ b/tests/auto/qgraphicswidget/tst_qgraphicswidget.cpp
@@ -259,6 +259,35 @@ void tst_QGraphicsWidget::cleanup()
 {
 }
 
+class SizeHinter : public QGraphicsWidget
+{
+public:
+    SizeHinter(QGraphicsItem *parent = 0, Qt::WindowFlags wFlags = 0,
+                const QSizeF &min = QSizeF(5,5), 
+                const QSizeF &pref = QSizeF(50, 50), 
+                const QSizeF &max = QSizeF(500, 500)) 
+        : QGraphicsWidget(parent, wFlags) 
+    {
+        m_sizes[Qt::MinimumSize] = min;
+        m_sizes[Qt::PreferredSize] = pref;
+        m_sizes[Qt::MaximumSize] = max;
+        
+    }
+    void setSizeHint(Qt::SizeHint which, const QSizeF &newSizeHint)
+    {
+        m_sizes[which] = newSizeHint;
+    }
+
+protected:
+    QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const
+    {
+        Q_UNUSED(constraint);
+        return m_sizes[which];
+    }
+private:
+    QSizeF m_sizes[4];
+};
+
 void tst_QGraphicsWidget::qgraphicswidget()
 {
     SubQGraphicsWidget widget;
@@ -282,6 +311,12 @@ void tst_QGraphicsWidget::qgraphicswidget()
     QCOMPARE(widget.type(), (int)QGraphicsWidget::Type);
     QCOMPARE(widget.call_propertyChange(QString(), QVariant()), QVariant());
     widget.call_sizeHint(Qt::PreferredSize, QSizeF());
+    
+    QGraphicsScene scene;
+    QGraphicsWidget *parent = new QGraphicsWidget;
+    SizeHinter *child = new SizeHinter(parent);
+    
+    QCOMPARE(child->minimumSize(), QSizeF(5, 5));
 }
 
 void tst_QGraphicsWidget::activation()
@@ -1516,35 +1551,6 @@ enum WhichSize {
     None,
 };
 
-class SizeHinter : public QGraphicsWidget
-{
-public:
-    SizeHinter(QGraphicsItem *parent = 0, Qt::WindowFlags wFlags = 0,
-                const QSizeF &min = QSizeF(5,5), 
-                const QSizeF &pref = QSizeF(50, 50), 
-                const QSizeF &max = QSizeF(500, 500)) 
-        : QGraphicsWidget(parent, wFlags) 
-    {
-        m_sizes[Qt::MinimumSize] = min;
-        m_sizes[Qt::PreferredSize] = pref;
-        m_sizes[Qt::MaximumSize] = max;
-        
-    }
-    void setSizeHint(Qt::SizeHint which, const QSizeF &newSizeHint)
-    {
-        m_sizes[which] = newSizeHint;
-    }
-
-protected:
-    QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const
-    {
-        Q_UNUSED(constraint);
-        return m_sizes[which];
-    }
-private:
-    QSizeF m_sizes[4];
-};
-
 typedef QPair<int, QVariant> Inst;
 
 Q_DECLARE_METATYPE(Inst)