Add setCursor API to QWindow

Change-Id: Id430ea9c94475356c9367a135f678f5f9ef795fc
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

src/gui/kernel/qwindow.cpp

@@ -59,6 +59,7 @@
 #include <QtCore/QDebug>
 
 #include <QStyleHints>
+#include <QPlatformCursor>
 
 QT_BEGIN_NAMESPACE
 
@@ -1684,4 +1685,64 @@ void QWindowPrivate::maybeQuitOnLastWindowClosed()
 
 }
 
+/*!
+    \property QWindow::cursor
+    \brief the cursor shape for this window
+
+    The mouse cursor will assume this shape when it is over this
+    window, unless an override cursor is set. See the \link
+    Qt::CursorShape list of predefined cursor objects\endlink for a
+    range of useful shapes.
+
+    By default, this property contains a cursor with the Qt::ArrowCursor
+    shape.
+
+    Some underlying window implementations will reset the cursor if it
+    leaves a window even if the mouse is grabbed. If you want to have
+    a cursor set for all windows, even when outside the window, consider
+    QGuiApplication::setOverrideCursor().
+
+    \sa QGuiApplication::setOverrideCursor()
+*/
+
+#ifndef QT_NO_CURSOR
+QCursor QWindow::cursor() const
+{
+    Q_D(const QWindow);
+    return d->cursor;
+}
+
+void QWindow::setCursor(const QCursor &cursor)
+{
+    Q_D(QWindow);
+    if (QPlatformCursor *platformCursor = d->screen->handle()->cursor()) {
+        d->cursor = cursor;
+        QCursor *oc = QGuiApplication::overrideCursor();
+        QCursor c = oc ? *oc : d->cursor;
+        platformCursor->changeCursor(&c, this);
+        QEvent event(QEvent::CursorChange);
+        QGuiApplication::sendEvent(this, &event);
+    }
+}
+
+/*!
+  \brief Restores the default arrow cursor for this window.
+ */
+void QWindow::unsetCursor()
+{
+    Q_D(QWindow);
+    if (QPlatformCursor *platformCursor = d->screen->handle()->cursor()) {
+        d->cursor = Qt::ArrowCursor;
+        QCursor *oc = QGuiApplication::overrideCursor();
+        if (!oc) {
+            QCursor c = d->cursor;
+            platformCursor->changeCursor(&c, this);
+        }
+        QEvent event(QEvent::CursorChange);
+        QGuiApplication::sendEvent(this, &event);
+    }
+}
+
+#endif
+
 QT_END_NAMESPACE

src/gui/kernel/qwindow.h

@@ -53,6 +53,10 @@
 #include <QtGui/qsurfaceformat.h>
 #include <QtGui/qwindowdefs.h>
 
+#ifndef QT_NO_CURSOR
+#include <QtGui/qcursor.h>
+#endif
+
 QT_BEGIN_HEADER
 
 QT_BEGIN_NAMESPACE
@@ -92,6 +96,9 @@ class Q_GUI_EXPORT QWindow : public QObject, public QSurface
     Q_PROPERTY(int height READ height WRITE setHeight NOTIFY heightChanged)
     Q_PROPERTY(bool visible READ isVisible WRITE setVisible NOTIFY visibleChanged)
     Q_PROPERTY(Qt::ScreenOrientation contentOrientation READ contentOrientation WRITE reportContentOrientationChange NOTIFY contentOrientationChanged)
+#ifndef QT_NO_CURSOR
+    Q_PROPERTY(QCursor cursor READ cursor WRITE setCursor RESET unsetCursor)
+#endif
 
 public:
 
@@ -205,6 +212,12 @@ public:
     QPoint mapToGlobal(const QPoint &pos) const;
     QPoint mapFromGlobal(const QPoint &pos) const;
 
+#ifndef QT_NO_CURSOR
+    QCursor cursor() const;
+    void setCursor(const QCursor &);
+    void unsetCursor();
+#endif
+
 public Q_SLOTS:
     void setVisible(bool visible);
 

src/gui/kernel/qwindow_p.h

@@ -84,6 +84,9 @@ public:
         , blockedByModalWindow(false)
         , transientParent(0)
         , screen(0)
+#ifndef QT_NO_CURSOR
+        , cursor(Qt::ArrowCursor)
+#endif
     {
         isWindow = true;
     }
@@ -128,6 +131,10 @@ public:
 
     QPointer<QWindow> transientParent;
     QScreen *screen;
+
+#ifndef QT_NO_CURSOR
+    QCursor cursor;
+#endif
 };