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/****************************************************************************
**
** 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 QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/qglobal.h>
#ifdef Q_WS_MAC
#import <Cocoa/Cocoa.h>
#include "qscroller_p.h"
QPointF QScrollerPrivate::realDpi(int screen)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
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();
}
[pool release];
}
#endif
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