QWindow::mapToGlobal/mapFromGlobal and move()

Change-Id: If1909b9ce468a8708cb25d5a2fbe8ebd90bd958a
Reviewed-on: http://codereview.qt.nokia.com/3702
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>

src/gui/kernel/qwindow.cpp

@@ -631,6 +631,41 @@ void QWindow::wheelEvent(QWheelEvent *)
 }
 #endif //QT_NO_WHEELEVENT
 
+
+
+/*!
+    \fn QPoint QWindow::mapToGlobal(const QPoint &pos) const
+
+    Translates the window coordinate \a pos to global screen
+    coordinates. For example, \c{mapToGlobal(QPoint(0,0))} would give
+    the global coordinates of the top-left pixel of the window.
+
+    \sa mapFromGlobal()
+*/
+
+QPoint QWindow::mapToGlobal(const QPoint &pos) const
+{
+    return pos + d_func()->globalPosition();
+}
+
+
+
+/*!
+    \fn QPoint QWindow::mapFromGlobal(const QPoint &pos) const
+
+    Translates the global screen coordinate \a pos to window
+    coordinates.
+
+    \sa mapToGlobal()
+*/
+
+QPoint QWindow::mapFromGlobal(const QPoint &pos) const
+{
+    return pos - d_func()->globalPosition();
+}
+
+
+
 Q_GUI_EXPORT QWindowPrivate *qt_window_private(QWindow *window)
 {
     return window->d_func();

src/gui/kernel/qwindow.h

@@ -155,6 +155,7 @@ public:
     void setBaseSize(const QSize &size);
     void setSizeIncrement(const QSize &size);
 
+    void setGeometry(int x, int y, int w, int h) { setGeometry(QRect(x, y, w, h)); }
     void setGeometry(const QRect &rect);
     QRect geometry() const;
 
@@ -166,6 +167,9 @@ public:
     inline QSize size() const { return geometry().size(); }
     inline QPoint pos() const { return geometry().topLeft(); }
 
+    inline void move(const QPoint &pt) { setGeometry(QRect(pt, size())); }
+    inline void move(int x, int y) { move(QPoint(x, y)); }
+
     inline void resize(const QSize &size) { setGeometry(QRect(pos(), size)); }
     inline void resize(int w, int h) { setGeometry(QRect(x(), y(), w, h)); }
 
@@ -183,6 +187,9 @@ public:
     QScreen *screen() const;
     void setScreen(QScreen *screen);
 
+    QPoint mapToGlobal(const QPoint &pos) const;
+    QPoint mapFromGlobal(const QPoint &pos) const;
+
 public Q_SLOTS:
     inline void show() { setVisible(true); }
     inline void hide() { setVisible(false); }

src/gui/kernel/qwindow_p.h

@@ -81,6 +81,15 @@ public:
 
     void maybeQuitOnLastWindowClosed();
 
+    QPoint globalPosition() const {
+        Q_Q(const QWindow);
+        QPoint offset = q->pos();
+        for (const QWindow *p = q->parent(); p; p = p->parent())
+            offset += p->pos();
+        return offset;
+    }
+
+
     QWindow::SurfaceType surfaceType;
     Qt::WindowFlags windowFlags;
     QWindow *parentWindow;

tests/auto/qwindow/qwindow.pro

@@ -0,0 +1,6 @@
+load(qttest_p4)
+
+QT += core-private gui-private
+
+SOURCES  += tst_qwindow.cpp
+

tests/auto/qwindow/tst_qwindow.cpp

@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite 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.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qwindow.h>
+#include <qtest.h>
+
+class tst_QWindow: public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void mapGlobal();
+};
+
+
+void tst_QWindow::mapGlobal()
+{
+    QWindow a;
+    QWindow b(&a);
+    QWindow c(&b);
+
+    a.setGeometry(10, 10, 300, 300);
+    b.setGeometry(20, 20, 200, 200);
+    c.setGeometry(40, 40, 100, 100);
+
+    QCOMPARE(a.mapToGlobal(QPoint(100, 100)), QPoint(110, 110));
+    QCOMPARE(b.mapToGlobal(QPoint(100, 100)), QPoint(130, 130));
+    QCOMPARE(c.mapToGlobal(QPoint(100, 100)), QPoint(170, 170));
+
+    QCOMPARE(a.mapFromGlobal(QPoint(100, 100)), QPoint(90, 90));
+    QCOMPARE(b.mapFromGlobal(QPoint(100, 100)), QPoint(70, 70));
+    QCOMPARE(c.mapFromGlobal(QPoint(100, 100)), QPoint(30, 30));
+}
+
+#include <tst_qwindow.moc>
+QTEST_MAIN(tst_QWindow);