/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtCore/qglobal.h>

#ifdef Q_DEAD_CODE_FROM_QT4_MAC

#import <AppKit/AppKit.h>

#include "qscroller_p.h"

QT_BEGIN_NAMESPACE

QPointF QScrollerPrivate::realDpi(int screen) const
{
    QMacAutoReleasePool pool;
    NSArray *nsscreens = [NSScreen screens];

    if (screen < 0 || screen >= int([nsscreens count]))
        screen = 0;

    NSScreen *nsscreen = [nsscreens objectAtIndex:screen];
    CGDirectDisplayID display = [[[nsscreen deviceDescription] objectForKey:@"NSScreenNumber"] intValue];

    CGSize mmsize = CGDisplayScreenSize(display);
    if (mmsize.width > 0 && mmsize.height > 0) {
        return QPointF(CGDisplayPixelsWide(display) / mmsize.width,
                       CGDisplayPixelsHigh(display) / mmsize.height) * qreal(25.4);
    } else {
        return QPointF();
    }
}

QT_END_NAMESPACE

#endif