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Diffstat (limited to 'src/widgets/util/qscroller_mac.mm')
-rw-r--r-- | src/widgets/util/qscroller_mac.mm | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/widgets/util/qscroller_mac.mm b/src/widgets/util/qscroller_mac.mm new file mode 100644 index 0000000000..81d18aaf6b --- /dev/null +++ b/src/widgets/util/qscroller_mac.mm @@ -0,0 +1,75 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 <QtCore/qglobal.h> + +#ifdef Q_WS_MAC + +#import <Cocoa/Cocoa.h> + +#include "qscroller_p.h" + +QT_BEGIN_NAMESPACE + +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]; +} + +QT_END_NAMESPACE + +#endif |