9 files changed, 42 insertions, 50 deletions
diff --git a/src/widgets/itemviews/qcolumnview_p.h b/src/widgets/itemviews/qcolumnview_p.h
index 5bdb74c56c..c3c79d35a3 100644
--- a/src/widgets/itemviews/qcolumnview_p.h
+++ b/src/widgets/itemviews/qcolumnview_p.h
@@ -73,7 +73,7 @@ QT_BEGIN_NAMESPACE
 class QColumnViewPreviewColumn : public QAbstractItemView {
 
 public:
-    QColumnViewPreviewColumn(QWidget *parent) : QAbstractItemView(parent), previewWidget(0) {
+    explicit QColumnViewPreviewColumn(QWidget *parent) : QAbstractItemView(parent), previewWidget(0) {
     }
 
     void setPreviewWidget(QWidget *widget) {
diff --git a/src/widgets/itemviews/qdatawidgetmapper.h b/src/widgets/itemviews/qdatawidgetmapper.h
index e73d4b1044..3cb8f09510 100644
--- a/src/widgets/itemviews/qdatawidgetmapper.h
+++ b/src/widgets/itemviews/qdatawidgetmapper.h
@@ -66,7 +66,7 @@ class Q_WIDGETS_EXPORT QDataWidgetMapper: public QObject
     Q_PROPERTY(SubmitPolicy submitPolicy READ submitPolicy WRITE setSubmitPolicy)
 
 public:
-    QDataWidgetMapper(QObject *parent = 0);
+    explicit QDataWidgetMapper(QObject *parent = 0);
     ~QDataWidgetMapper();
 
     void setModel(QAbstractItemModel *model);
diff --git a/src/widgets/itemviews/qitemeditorfactory.h b/src/widgets/itemviews/qitemeditorfactory.h
index aff8de3a4c..8bc1cc7df6 100644
--- a/src/widgets/itemviews/qitemeditorfactory.h
+++ b/src/widgets/itemviews/qitemeditorfactory.h
@@ -69,7 +69,7 @@ template <class T>
 class QItemEditorCreator : public QItemEditorCreatorBase
 {
 public:
-    inline QItemEditorCreator(const QByteArray &valuePropertyName);
+    inline explicit QItemEditorCreator(const QByteArray &valuePropertyName);
     inline QWidget *createWidget(QWidget *parent) const { return new T(parent); }
     inline QByteArray valuePropertyName() const { return propertyName; }
 
diff --git a/src/widgets/itemviews/qstandarditemmodel.h b/src/widgets/itemviews/qstandarditemmodel.h
index e374665f20..767665fd94 100644
--- a/src/widgets/itemviews/qstandarditemmodel.h
+++ b/src/widgets/itemviews/qstandarditemmodel.h
@@ -66,7 +66,7 @@ class Q_WIDGETS_EXPORT QStandardItem
 {
 public:
     QStandardItem();
-    QStandardItem(const QString &text);
+    explicit QStandardItem(const QString &text);
     QStandardItem(const QIcon &icon, const QString &text);
     explicit QStandardItem(int rows, int columns = 1);
     virtual ~QStandardItem();
diff --git a/src/widgets/itemviews/qtablewidget.h b/src/widgets/itemviews/qtablewidget.h
index 3d08e204d1..0c6ed85fc9 100644
--- a/src/widgets/itemviews/qtablewidget.h
+++ b/src/widgets/itemviews/qtablewidget.h
@@ -84,7 +84,7 @@ class Q_WIDGETS_EXPORT QTableWidgetItem
     friend class QTableModel;
 public:
     enum ItemType { Type = 0, UserType = 1000 };
-    QTableWidgetItem(int type = Type);
+    explicit QTableWidgetItem(int type = Type);
     explicit QTableWidgetItem(const QString &text, int type = Type);
     explicit QTableWidgetItem(const QIcon &icon, const QString &text, int type = Type);
     QTableWidgetItem(const QTableWidgetItem &other);
diff --git a/src/widgets/itemviews/qtreewidget.h b/src/widgets/itemviews/qtreewidget.h
index c9654d3e8e..c5f1032728 100644
--- a/src/widgets/itemviews/qtreewidget.h
+++ b/src/widgets/itemviews/qtreewidget.h
@@ -69,7 +69,7 @@ class Q_WIDGETS_EXPORT QTreeWidgetItem
 public:
     enum ItemType { Type = 0, UserType = 1000 };
     explicit QTreeWidgetItem(int type = Type);
-    QTreeWidgetItem(const QStringList &strings, int type = Type);
+    explicit QTreeWidgetItem(const QStringList &strings, int type = Type);
     explicit QTreeWidgetItem(QTreeWidget *view, int type = Type);
     QTreeWidgetItem(QTreeWidget *view, const QStringList &strings, int type = Type);
     QTreeWidgetItem(QTreeWidget *view, QTreeWidgetItem *after, int type = Type);
diff --git a/src/widgets/kernel/qstackedlayout.cpp b/src/widgets/kernel/qstackedlayout.cpp
index 9b40063e65..0d2e7716e5 100644
--- a/src/widgets/kernel/qstackedlayout.cpp
+++ b/src/widgets/kernel/qstackedlayout.cpp
@@ -477,6 +477,38 @@ void QStackedLayout::setGeometry(const QRect &rect)
 }
 
 /*!
+    \reimp
+*/
+bool QStackedLayout::hasHeightForWidth() const
+{
+    const int n = count();
+
+    for (int i = 0; i < n; ++i) {
+        if (QLayoutItem *item = itemAt(i)) {
+            if (item->hasHeightForWidth())
+                return true;
+        }
+    }
+    return false;
+}
+
+/*!
+    \reimp
+*/
+int QStackedLayout::heightForWidth(int width) const
+{
+    const int n = count();
+
+    int hfw = 0;
+    for (int i = 0; i < n; ++i) {
+        if (QLayoutItem *item = itemAt(i)) {
+            hfw = qMax(hfw, item->heightForWidth(width));
+        }
+    }
+    return hfw;
+}
+
+/*!
     \enum QStackedLayout::StackingMode
     \since 4.4
 
diff --git a/src/widgets/kernel/qstackedlayout.h b/src/widgets/kernel/qstackedlayout.h
index e54efa886e..fa77341c52 100644
--- a/src/widgets/kernel/qstackedlayout.h
+++ b/src/widgets/kernel/qstackedlayout.h
@@ -94,6 +94,8 @@ public:
     QLayoutItem *itemAt(int) const;
     QLayoutItem *takeAt(int);
     void setGeometry(const QRect &rect);
+    bool hasHeightForWidth() const;
+    int heightForWidth(int width) const;
 
 Q_SIGNALS:
     void widgetRemoved(int index);
diff --git a/src/widgets/widgets/qstackedwidget.cpp b/src/widgets/widgets/qstackedwidget.cpp
index 9617d6de58..5406f5dcf5 100644
--- a/src/widgets/widgets/qstackedwidget.cpp
+++ b/src/widgets/widgets/qstackedwidget.cpp
@@ -49,54 +49,12 @@
 
 QT_BEGIN_NAMESPACE
 
-/**
-   QStackedLayout does not support height for width (simply because it does not reimplement
-   heightForWidth() and hasHeightForWidth()). That is not possible to fix without breaking
-   binary compatibility. (QLayout is subject to multiple inheritance).
-   However, we can fix QStackedWidget by simply using a modified version of QStackedLayout
-   that reimplements the hfw-related functions:
- */
-class QStackedLayoutHFW : public QStackedLayout 
-{ 
-public: 
-    QStackedLayoutHFW(QWidget *parent = 0) : QStackedLayout(parent) {} 
-    bool hasHeightForWidth() const; 
-    int heightForWidth(int width) const; 
-}; 
- 
-bool QStackedLayoutHFW::hasHeightForWidth() const 
-{ 
-    const int n = count(); 
- 
-    for (int i = 0; i < n; ++i) { 
-        if (QLayoutItem *item = itemAt(i)) { 
-            if (item->hasHeightForWidth()) 
-                return true; 
-        } 
-    } 
-    return false; 
-} 
- 
-int QStackedLayoutHFW::heightForWidth(int width) const 
-{ 
-    const int n = count(); 
- 
-    int hfw = 0; 
-    for (int i = 0; i < n; ++i) { 
-        if (QLayoutItem *item = itemAt(i)) { 
-            hfw = qMax(hfw, item->heightForWidth(width)); 
-        } 
-    } 
-    return hfw; 
-} 
- 
-
 class QStackedWidgetPrivate : public QFramePrivate
 {
     Q_DECLARE_PUBLIC(QStackedWidget)
 public:
     QStackedWidgetPrivate():layout(0){}
-    QStackedLayoutHFW *layout;
+    QStackedLayout *layout;
     bool blockChildAdd;
 };
 
@@ -180,7 +138,7 @@ QStackedWidget::QStackedWidget(QWidget *parent)
     : QFrame(*new QStackedWidgetPrivate, parent)
 {
     Q_D(QStackedWidget);
-    d->layout = new QStackedLayoutHFW(this);
+    d->layout = new QStackedLayout(this);
     connect(d->layout, SIGNAL(widgetRemoved(int)), this, SIGNAL(widgetRemoved(int)));
     connect(d->layout, SIGNAL(currentChanged(int)), this, SIGNAL(currentChanged(int)));
 }