Merge remote-tracking branch 'origin/master' into api_changes

Conflicts:
	configure
	src/widgets/styles/qwindowsxpstyle.cpp
	tests/auto/gui/kernel/qwindow/qwindow.pro
	tests/auto/gui/kernel/qwindow/tst_qwindow.cpp

Change-Id: I624b6d26abce9874c610c04954c1c45bc074bef3

18 files changed, 238 insertions, 33 deletions

diff --git a/src/gui/kernel/kernel.pri b/src/gui/kernel/kernel.pri
index 06773f58b5..b0fe871741 100644
--- a/src/gui/kernel/kernel.pri
+++ b/src/gui/kernel/kernel.pri
@@ -15,6 +15,7 @@ HEADERS += \
         kernel/qplatformscreen_qpa.h \
         kernel/qplatformscreen_qpa_p.h \
         kernel/qplatforminputcontext_qpa.h \
+        kernel/qplatforminputcontext_qpa_p.h \
         kernel/qplatformintegrationfactory_qpa_p.h \
         kernel/qplatformintegrationplugin_qpa.h \
         kernel/qplatformtheme_qpa.h\
diff --git a/src/gui/kernel/qcursor.cpp b/src/gui/kernel/qcursor.cpp
index 95b2b4a28e..476d3a449b 100644
--- a/src/gui/kernel/qcursor.cpp
+++ b/src/gui/kernel/qcursor.cpp
@@ -205,6 +205,13 @@ QT_BEGIN_NAMESPACE
     You can call QWidget::mapFromGlobal() to translate it to widget
     coordinates.
 
+    \note The position is queried from the windowing system. If mouse events are generated
+    via other means (e.g., via QWindowSystemInterface in a unit test), those fake mouse
+    moves will not be reflected in the returned value.
+
+    \note On platforms where there is no windowing system or cursors are not available, the returned
+    position is based on the mouse move events generated via QWindowSystemInterface.
+
     \sa setPos(), QWidget::mapFromGlobal(), QWidget::mapToGlobal(), QGuiApplication::primaryScreen()
 */
 
@@ -218,6 +225,16 @@ QT_BEGIN_NAMESPACE
     You can call QWidget::mapToGlobal() to translate widget
     coordinates to global screen coordinates.
 
+    \note Calling this function results in changing the cursor position through the windowing
+    system. The windowing system will typically respond by sending mouse events to the application's
+    window. This means that the usage of this function should be avoided in unit tests and
+    everywhere where fake mouse events are being injected via QWindowSystemInterface because the
+    windowing system's mouse state (with regards to buttons for example) may not match the state in
+    the application-generated events.
+
+    \note On platforms where there is no windowing system or cursors are not available, this
+    function may do nothing.
+
     \sa pos(), QWidget::mapFromGlobal(), QWidget::mapToGlobal()
 */
 
diff --git a/src/gui/kernel/qguiapplication.cpp b/src/gui/kernel/qguiapplication.cpp
index 5c419a79dd..6a93ef4d09 100644
--- a/src/gui/kernel/qguiapplication.cpp
+++ b/src/gui/kernel/qguiapplication.cpp
@@ -52,6 +52,7 @@
 #include "qplatformintegration_qpa.h"
 
 #include <QtCore/QAbstractEventDispatcher>
+#include <QtCore/QVariant>
 #include <QtCore/private/qcoreapplication_p.h>
 #include <QtCore/private/qabstracteventdispatcher_p.h>
 #include <QtCore/qmutex.h>
@@ -61,13 +62,15 @@
 #include <qpalette.h>
 #include <qscreen.h>
 #include <private/qscreen_p.h>
+#include <private/qdrawhelper_p.h>
 
 #include <QtGui/QPlatformIntegration>
 #include <QtGui/QGenericPluginFactory>
 #include <QtGui/qstylehints.h>
 #include <QtGui/qinputpanel.h>
 #include <QtGui/qplatformtheme_qpa.h>
-
+#include <QtGui/qplatforminputcontext_qpa.h>
+#include <private/qplatforminputcontext_qpa_p.h>
 
 #include <QWindowSystemInterface>
 #include "private/qwindowsysteminterface_qpa_p.h"
@@ -142,6 +145,8 @@ static QBasicMutex applicationFontMutex;
 QFont *QGuiApplicationPrivate::app_font = 0;
 bool QGuiApplicationPrivate::obey_desktop_settings = true;
 
+static qreal fontSmoothingGamma = 1.7;
+
 extern void qRegisterGuiVariant();
 extern void qInitDrawhelperAsm();
 extern void qInitImageConversions();
@@ -575,13 +580,13 @@ static void init_platform(const QString &pluginArgument, const QString &platform
             nativeInterface->setProperty(name.constData(), value);
         }
     }
+    fontSmoothingGamma = QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::FontSmoothingGamma).toReal();
 }
 
 static void init_plugins(const QList<QByteArray> &pluginList)
 {
     for (int i = 0; i < pluginList.count(); ++i) {
         QByteArray pluginSpec = pluginList.at(i);
-        qDebug() << "init_plugins" << i << pluginSpec;
         int colonPos = pluginSpec.indexOf(':');
         QObject *plugin;
         if (colonPos < 0)
@@ -589,7 +594,6 @@ static void init_plugins(const QList<QByteArray> &pluginList)
         else
             plugin = QGenericPluginFactory::create(QLatin1String(pluginSpec.mid(0, colonPos)),
                                                    QLatin1String(pluginSpec.mid(colonPos+1)));
-        qDebug() << "   created" << plugin;
         if (plugin)
             QGuiApplicationPrivate::generic_plugin_list.append(plugin);
     }
@@ -597,12 +601,10 @@ static void init_plugins(const QList<QByteArray> &pluginList)
 
 void QGuiApplicationPrivate::createPlatformIntegration()
 {
-    Q_Q(QGuiApplication);
-
     // Use the Qt menus by default. Platform plugins that
     // want to enable a native menu implementation can clear
     // this flag.
-    q->setAttribute(Qt::AA_DontUseNativeMenuBar, true);
+    QCoreApplication::setAttribute(Qt::AA_DontUseNativeMenuBar, true);
 
     // Load the platform integration
     QString platformPluginPath = QLatin1String(qgetenv("QT_QPA_PLATFORM_PLUGIN_PATH"));
@@ -706,6 +708,10 @@ void QGuiApplicationPrivate::init()
         argc = j;
     }
 
+    // Load environment exported generic plugins
+    foreach (const QByteArray &plugin, qgetenv("QT_QPA_GENERIC_PLUGINS").split(','))
+        pluginList << plugin;
+
     if (platform_integration == 0)
         createPlatformIntegration();
 
@@ -761,6 +767,7 @@ QGuiApplicationPrivate::~QGuiApplicationPrivate()
     delete  platform_theme;
     delete platform_integration;
     platform_integration = 0;
+    delete m_gammaTables.load();
 }
 
 #if 0
@@ -1168,7 +1175,7 @@ void QGuiApplicationPrivate::processActivatedEvent(QWindowSystemInterfacePrivate
         QFocusEvent focusOut(QEvent::FocusOut);
         QCoreApplication::sendSpontaneousEvent(previous, &focusOut);
         QObject::disconnect(previous, SIGNAL(focusObjectChanged(QObject*)),
-                            qApp, SIGNAL(focusObjectChanged(QObject*)));
+                            qApp, SLOT(q_updateFocusObject(QObject*)));
     } else {
         QEvent appActivate(QEvent::ApplicationActivate);
         qApp->sendSpontaneousEvent(qApp, &appActivate);
@@ -1178,17 +1185,18 @@ void QGuiApplicationPrivate::processActivatedEvent(QWindowSystemInterfacePrivate
         QFocusEvent focusIn(QEvent::FocusIn);
         QCoreApplication::sendSpontaneousEvent(QGuiApplicationPrivate::focus_window, &focusIn);
         QObject::connect(QGuiApplicationPrivate::focus_window, SIGNAL(focusObjectChanged(QObject*)),
-                         qApp, SIGNAL(focusObjectChanged(QObject*)));
+                         qApp, SLOT(q_updateFocusObject(QObject*)));
     } else {
         QEvent appActivate(QEvent::ApplicationDeactivate);
         qApp->sendSpontaneousEvent(qApp, &appActivate);
     }
 
-    if (self)
+    if (self) {
         self->notifyActiveWindowChange(previous);
 
-    if (previousFocusObject != qApp->focusObject())
-        emit qApp->focusObjectChanged(qApp->focusObject());
+        if (previousFocusObject != qApp->focusObject())
+            self->q_updateFocusObject(qApp->focusObject());
+    }
 }
 
 void QGuiApplicationPrivate::processWindowStateChangedEvent(QWindowSystemInterfacePrivate::WindowStateChangedEvent *wse)
@@ -2160,4 +2168,36 @@ void QGuiApplicationPrivate::notifyThemeChanged()
     }
 }
 
+const QDrawHelperGammaTables *QGuiApplicationPrivate::gammaTables()
+{
+    QDrawHelperGammaTables *result = m_gammaTables.load();
+    if (!result){
+        QDrawHelperGammaTables *tables = new QDrawHelperGammaTables(fontSmoothingGamma);
+        if (!m_gammaTables.testAndSetRelease(0, tables))
+            delete tables;
+        result = m_gammaTables.load();
+    }
+    return result;
+}
+
+void QGuiApplicationPrivate::q_updateFocusObject(QObject *object)
+{
+    Q_Q(QGuiApplication);
+
+    bool enabled = false;
+    if (object) {
+        QInputMethodQueryEvent query(Qt::ImEnabled);
+        QGuiApplication::sendEvent(object, &query);
+        enabled = query.value(Qt::ImEnabled).toBool();
+    }
+
+    QPlatformInputContextPrivate::setInputMethodAccepted(enabled);
+    QPlatformInputContext *inputContext = platformIntegration()->inputContext();
+    if (inputContext)
+        inputContext->setFocusObject(object);
+    emit q->focusObjectChanged(object);
+}
+
+#include "moc_qguiapplication.cpp"
+
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qguiapplication.h b/src/gui/kernel/qguiapplication.h
index cc7dea422f..b58720db13 100644
--- a/src/gui/kernel/qguiapplication.h
+++ b/src/gui/kernel/qguiapplication.h
@@ -155,6 +155,8 @@ private:
     Q_DISABLE_COPY(QGuiApplication)
     Q_DECLARE_PRIVATE(QGuiApplication)
 
+    Q_PRIVATE_SLOT(d_func(), void q_updateFocusObject(QObject *object))
+
 #ifndef QT_NO_GESTURES
     friend class QGestureManager;
 #endif
diff --git a/src/gui/kernel/qguiapplication_p.h b/src/gui/kernel/qguiapplication_p.h
index 6792e9382c..352917f2db 100644
--- a/src/gui/kernel/qguiapplication_p.h
+++ b/src/gui/kernel/qguiapplication_p.h
@@ -61,6 +61,7 @@ QT_BEGIN_NAMESPACE
 
 class QPlatformIntegration;
 class QPlatformTheme;
+struct QDrawHelperGammaTables;
 
 class Q_GUI_EXPORT QGuiApplicationPrivate : public QCoreApplicationPrivate
 {
@@ -141,6 +142,8 @@ public:
 
     QPixmap getPixmapCursor(Qt::CursorShape cshape);
 
+    void q_updateFocusObject(QObject *object);
+
     static QGuiApplicationPrivate *instance() { return self; }
 
     static QString *platform_name;
@@ -200,6 +203,8 @@ public:
     };
     QHash<QWindow *, SynthesizedMouseData> synthesizedMousePoints;
 
+    const QDrawHelperGammaTables *gammaTables();
+
 protected:
     virtual void notifyThemeChanged();
 
@@ -209,6 +214,7 @@ private:
     static QGuiApplicationPrivate *self;
     static QTouchDevice *m_fakeTouchDevice;
     static int m_fakeMouseSourcePointId;
+    QAtomicPointer<QDrawHelperGammaTables> m_gammaTables;
 };
 
 Q_GUI_EXPORT uint qHash(const QGuiApplicationPrivate::ActiveTouchPointsKey &k);
diff --git a/src/gui/kernel/qinputmethod.cpp b/src/gui/kernel/qinputmethod.cpp
index 23ab8535a0..c443a47cac 100644
--- a/src/gui/kernel/qinputmethod.cpp
+++ b/src/gui/kernel/qinputmethod.cpp
@@ -43,6 +43,7 @@
 #include <private/qinputmethod_p.h>
 #include <qguiapplication.h>
 #include <qtimer.h>
+#include <private/qplatforminputcontext_qpa_p.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -72,7 +73,7 @@ QInputMethod::~QInputMethod()
     information like virtual keyboard visibility and keyboard dimensions.
 
     Qt Quick also provides access to QInputMethod in QML through \l{QmlGlobalQtObject}{Qt global object}
-    as \c Qt.application.inputPanel property.
+    as \c Qt.inputMethod property.
 */
 
 /*!
@@ -295,8 +296,12 @@ void QInputMethod::update(Qt::InputMethodQueries queries)
 {
     Q_D(QInputMethod);
 
-    if (queries & Qt::ImEnabled)
-        d->q_checkFocusObject(qApp->focusObject());
+    if (queries & Qt::ImEnabled) {
+        QObject *focus = qApp->focusObject();
+        bool enabled = d->objectAcceptsInputMethod(focus);
+        setInputItem(enabled ? focus : 0);
+        QPlatformInputContextPrivate::setInputMethodAccepted(enabled);
+    }
 
     QPlatformInputContext *ic = d->platformInputContext();
     if (ic)
@@ -361,14 +366,20 @@ void QInputMethodPrivate::q_connectFocusObject()
 void QInputMethodPrivate::q_checkFocusObject(QObject *object)
 {
     Q_Q(QInputMethod);
+    bool enabled = objectAcceptsInputMethod(object);
+    q->setInputItem(enabled ? object : 0);
+}
 
+bool QInputMethodPrivate::objectAcceptsInputMethod(QObject *object)
+{
     bool enabled = false;
     if (object) {
         QInputMethodQueryEvent query(Qt::ImEnabled);
         QGuiApplication::sendEvent(object, &query);
         enabled = query.value(Qt::ImEnabled).toBool();
     }
-    q->setInputItem(enabled ? object : 0);
+
+    return enabled;
 }
 
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qinputmethod_p.h b/src/gui/kernel/qinputmethod_p.h
index 8a17c85990..34a0430f10 100644
--- a/src/gui/kernel/qinputmethod_p.h
+++ b/src/gui/kernel/qinputmethod_p.h
@@ -71,6 +71,7 @@ public:
     }
     void q_connectFocusObject();
     void q_checkFocusObject(QObject *object);
+    bool objectAcceptsInputMethod(QObject *object);
 
     QTransform inputItemTransform;
     QWeakPointer<QObject> inputItem;
diff --git a/src/gui/kernel/qpalette.h b/src/gui/kernel/qpalette.h
index ca619a89b4..96295ab5db 100644
--- a/src/gui/kernel/qpalette.h
+++ b/src/gui/kernel/qpalette.h
@@ -86,12 +86,12 @@ public:
     enum ColorRole { WindowText, Button, Light, Midlight, Dark, Mid,
                      Text, BrightText, ButtonText, Base, Window, Shadow,
                      Highlight, HighlightedText,
-                     Link, LinkVisited, // ### Qt 5: remove
+                     Link, LinkVisited,
                      AlternateBase,
-                     NoRole, // ### Qt 5: value should be 0 or -1
+                     NoRole,
                      ToolTipBase, ToolTipText,
                      NColorRoles = ToolTipText + 1,
-                     Foreground = WindowText, Background = Window // ### Qt 5: remove
+                     Foreground = WindowText, Background = Window
                    };
 
     inline ColorGroup currentColorGroup() const { return static_cast<ColorGroup>(current_group); }
diff --git a/src/gui/kernel/qplatforminputcontext_qpa.cpp b/src/gui/kernel/qplatforminputcontext_qpa.cpp
index ee18f3ebd1..8612b4b42f 100644
--- a/src/gui/kernel/qplatforminputcontext_qpa.cpp
+++ b/src/gui/kernel/qplatforminputcontext_qpa.cpp
@@ -43,6 +43,7 @@
 #include <qguiapplication.h>
 #include <QRect>
 #include "private/qkeymapper_p.h"
+#include "private/qplatforminputcontext_qpa_p.h"
 
 QT_BEGIN_NAMESPACE
 
@@ -75,6 +76,7 @@ QT_BEGIN_NAMESPACE
     \internal
  */
 QPlatformInputContext::QPlatformInputContext()
+    : QObject(*(new QPlatformInputContextPrivate))
 {
 }
 
@@ -228,5 +230,29 @@ void QPlatformInputContext::emitInputDirectionChanged(Qt::LayoutDirection newDir
     emit qApp->inputMethod()->inputDirectionChanged(newDirection);
 }
 
+/*!
+    This virtual method gets called to notify updated focus to \a object.
+    \warning Input methods must not call this function directly.
+ */
+void QPlatformInputContext::setFocusObject(QObject *object)
+{
+    Q_UNUSED(object)
+}
+
+/*!
+    Returns true if current focus object supports input method events.
+ */
+bool QPlatformInputContext::inputMethodAccepted() const
+{
+    return QPlatformInputContextPrivate::s_inputMethodAccepted;
+}
+
+bool QPlatformInputContextPrivate::s_inputMethodAccepted = false;
+
+void QPlatformInputContextPrivate::setInputMethodAccepted(bool accepted)
+{
+    QPlatformInputContextPrivate::s_inputMethodAccepted = accepted;
+}
+
 
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qplatforminputcontext_qpa.h b/src/gui/kernel/qplatforminputcontext_qpa.h
index c7d823d662..5e8060c6e0 100644
--- a/src/gui/kernel/qplatforminputcontext_qpa.h
+++ b/src/gui/kernel/qplatforminputcontext_qpa.h
@@ -48,13 +48,13 @@ QT_BEGIN_HEADER
 
 QT_BEGIN_NAMESPACE
 
-
-class QWindow;
-class QMouseEvent;
+class QPlatformInputContextPrivate;
 
 class Q_GUI_EXPORT QPlatformInputContext : public QObject
 {
     Q_OBJECT
+    Q_DECLARE_PRIVATE(QPlatformInputContext)
+
 public:
     QPlatformInputContext();
     virtual ~QPlatformInputContext();
@@ -81,6 +81,14 @@ public:
     void emitLocaleChanged();
     virtual Qt::LayoutDirection inputDirection() const;
     void emitInputDirectionChanged(Qt::LayoutDirection newDirection);
+
+    virtual void setFocusObject(QObject *object);
+    bool inputMethodAccepted() const;
+
+private:
+    friend class QGuiApplication;
+    friend class QGuiApplicationPrivate;
+    friend class QInputMethod;
 };
 
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qplatforminputcontext_qpa_p.h b/src/gui/kernel/qplatforminputcontext_qpa_p.h
new file mode 100644
index 0000000000..dc12d26ffc
--- /dev/null
+++ b/src/gui/kernel/qplatforminputcontext_qpa_p.h
@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPLATFORMINPUTCONTEXT_P_H
+#define QPLATFORMINPUTCONTEXT_P_H
+
+#include <private/qobject_p.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QPlatformInputContextPrivate: public QObjectPrivate
+{
+public:
+    QPlatformInputContextPrivate() {}
+    ~QPlatformInputContextPrivate() {}
+
+    static void setInputMethodAccepted(bool accepted);
+    static bool inputMethodAccepted();
+
+    static bool s_inputMethodAccepted;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif
diff --git a/src/gui/kernel/qplatformintegration_qpa.cpp b/src/gui/kernel/qplatformintegration_qpa.cpp
index 6879f0517e..5269d8fb24 100644
--- a/src/gui/kernel/qplatformintegration_qpa.cpp
+++ b/src/gui/kernel/qplatformintegration_qpa.cpp
@@ -247,6 +247,7 @@ QPlatformSharedGraphicsCache *QPlatformIntegration::createPlatformSharedGraphics
 */
 QPaintEngine *QPlatformIntegration::createImagePaintEngine(QPaintDevice *paintDevice) const
 {
+    Q_UNUSED(paintDevice)
     return 0;
 }
 
@@ -293,6 +294,8 @@ QVariant QPlatformIntegration::styleHint(StyleHint hint) const
         return false;
     case PasswordMaskDelay:
         return 0;
+    case FontSmoothingGamma:
+        return qreal(1.7);
     }
 
     return 0;
diff --git a/src/gui/kernel/qplatformintegration_qpa.h b/src/gui/kernel/qplatformintegration_qpa.h
index 68dfc21833..fe40fd3dad 100644
--- a/src/gui/kernel/qplatformintegration_qpa.h
+++ b/src/gui/kernel/qplatformintegration_qpa.h
@@ -122,7 +122,8 @@ public:
         StartDragTime,
         KeyboardAutoRepeatRate,
         ShowIsFullScreen,
-        PasswordMaskDelay
+        PasswordMaskDelay,
+        FontSmoothingGamma
     };
 
     virtual QVariant styleHint(StyleHint hint) const;
diff --git a/src/gui/kernel/qplatformsharedgraphicscache_qpa.h b/src/gui/kernel/qplatformsharedgraphicscache_qpa.h
index f8ee201d85..8a92dbdd31 100644
--- a/src/gui/kernel/qplatformsharedgraphicscache_qpa.h
+++ b/src/gui/kernel/qplatformsharedgraphicscache_qpa.h
@@ -76,17 +76,18 @@ public:
                                          const QVector<QImage> &items) = 0;
     Q_INVOKABLE virtual void releaseItems(const QByteArray &cacheId, const QVector<quint32> &itemIds) = 0;
 
-    virtual void serializeBuffer(void *bufferId, QByteArray *serializedData, int *fileDescriptor) const = 0;
     virtual uint textureIdForBuffer(void *bufferId) = 0;
     virtual void referenceBuffer(void *bufferId) = 0;
     virtual bool dereferenceBuffer(void *bufferId) = 0;
+    virtual QSize sizeOfBuffer(void *bufferId) = 0;
+    virtual void *eglImageForBuffer(void *bufferId) = 0;
 
 Q_SIGNALS:
     void itemsMissing(const QByteArray &cacheId, const QVector<quint32> &itemIds);
-    void itemsAvailable(const QByteArray &cacheId, void *bufferId, const QSize &bufferSize,
+    void itemsAvailable(const QByteArray &cacheId, void *bufferId,
                         const QVector<quint32> &itemIds, const QVector<QPoint> &positionsInBuffer);
     void itemsInvalidated(const QByteArray &cacheId, const QVector<quint32> &itemIds);
-    void itemsUpdated(const QByteArray &cacheId, void *bufferId, const QSize &bufferSize,
+    void itemsUpdated(const QByteArray &cacheId, void *bufferId,
                       const QVector<quint32> &itemIds, const QVector<QPoint> &positionsInBuffer);
 };
 
diff --git a/src/gui/kernel/qstylehints.cpp b/src/gui/kernel/qstylehints.cpp
index 4970f6a26b..9384d34097 100644
--- a/src/gui/kernel/qstylehints.cpp
+++ b/src/gui/kernel/qstylehints.cpp
@@ -101,4 +101,9 @@ int QStyleHints::passwordMaskDelay() const
     return hint(QPlatformIntegration::PasswordMaskDelay).toInt();
 }
 
+qreal QStyleHints::fontSmoothingGamma() const
+{
+    return hint(QPlatformIntegration::FontSmoothingGamma).toReal();
+}
+
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qstylehints.h b/src/gui/kernel/qstylehints.h
index ae51ebc052..301b51868f 100644
--- a/src/gui/kernel/qstylehints.h
+++ b/src/gui/kernel/qstylehints.h
@@ -63,6 +63,7 @@ public:
     int cursorFlashTime() const;
     bool showIsFullScreen() const;
     int passwordMaskDelay() const;
+    qreal fontSmoothingGamma() const;
 
 private:
     friend class QGuiApplication;
diff --git a/src/gui/kernel/qwindow.cpp b/src/gui/kernel/qwindow.cpp
index 85f619db31..d65998ce49 100644
--- a/src/gui/kernel/qwindow.cpp
+++ b/src/gui/kernel/qwindow.cpp
@@ -375,6 +375,8 @@ bool QWindow::isTopLevel() const
     Returns whether the window is modal.
 
     A modal window prevents other windows from getting any input.
+
+    \sa QWindow::windowModality
 */
 bool QWindow::isModal() const
 {
@@ -382,26 +384,37 @@ bool QWindow::isModal() const
     return d->modality != Qt::NonModal;
 }
 
-/*!
-    Returns the window's modality.
+/*! \property QWindow::windowModality
+    \brief the modality of the window
+
+    A modal window prevents other windows from receiving input events. Qt
+    supports two types of modality: Qt::WindowModal and Qt::ApplicationModal.
 
-    \sa setWindowModality()
+    By default, this property is Qt::NonModal
+
+    \sa Qt::WindowModality
 */
+
 Qt::WindowModality QWindow::windowModality() const
 {
     Q_D(const QWindow);
     return d->modality;
 }
 
-/*!
-    Sets the window's modality to \a windowModality.
-*/
-void QWindow::setWindowModality(Qt::WindowModality windowModality)
+void QWindow::setWindowModality(Qt::WindowModality modality)
 {
     Q_D(QWindow);
-    d->modality = windowModality;
+    if (d->modality == modality)
+        return;
+    d->modality = modality;
+    emit windowModalityChanged(modality);
 }
 
+/*! \fn void QWindow::windowModalityChanged(Qt::WindowModality windowModality)
+
+    This signal is emitted when the Qwindow::windowModality property changes to \a windowModality.
+*/
+
 /*!
     Sets the window's surface \a format.
 
diff --git a/src/gui/kernel/qwindow.h b/src/gui/kernel/qwindow.h
index 62ddb66a75..5cf6b413ba 100644
--- a/src/gui/kernel/qwindow.h
+++ b/src/gui/kernel/qwindow.h
@@ -85,6 +85,7 @@ class Q_GUI_EXPORT QWindow : public QObject, public QSurface
     Q_DECLARE_PRIVATE(QWindow)
 
     Q_PROPERTY(QString windowTitle READ windowTitle WRITE setWindowTitle)
+    Q_PROPERTY(Qt::WindowModality windowModality READ windowModality WRITE setWindowModality NOTIFY windowModalityChanged)
     Q_PROPERTY(int x READ x WRITE setX NOTIFY xChanged)
     Q_PROPERTY(int y READ y WRITE setY NOTIFY yChanged)
     Q_PROPERTY(int width READ width WRITE setWidth NOTIFY widthChanged)
@@ -255,6 +256,7 @@ public Q_SLOTS:
 Q_SIGNALS:
     void backBufferReady();
     void screenChanged(QScreen *screen);
+    void windowModalityChanged(Qt::WindowModality windowModality);
 
     void xChanged(int arg);
     void yChanged(int arg);