src/gui/kernel/qdesktopwidget_qws.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 14 May 2010 16:40:13 +0300
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Revision: 201017 Kit: 201019
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qdesktopwidget.h"
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#include "qscreen_qws.h"
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#include "private/qapplication_p.h"
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QT_BEGIN_NAMESPACE
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QT_USE_NAMESPACE
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QDesktopWidget::QDesktopWidget()
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    : QWidget(0, Qt::Desktop)
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{
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    setObjectName(QLatin1String("desktop"));
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}
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QDesktopWidget::~QDesktopWidget()
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{
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}
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bool QDesktopWidget::isVirtualDesktop() const
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{
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    return true;
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}
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int QDesktopWidget::primaryScreen() const
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{
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    return 0;
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}
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int QDesktopWidget::numScreens() const
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{
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    QScreen *screen = QScreen::instance();
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    if (!screen)
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        return 0;
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    const QList<QScreen*> subScreens = screen->subScreens();
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    return qMax(subScreens.size(), 1);
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}
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QWidget *QDesktopWidget::screen(int)
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{
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    return this;
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}
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const QRect QDesktopWidget::availableGeometry(int screenNo) const
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{
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    const QScreen *screen = QScreen::instance();
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    if (screenNo == -1)
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        screenNo = 0;
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    if (!screen || screenNo < 0)
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        return QRect();
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    const QList<QScreen*> subScreens = screen->subScreens();
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    if (!subScreens.isEmpty()) {
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        if (screenNo >= subScreens.size())
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            return QRect();
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        screen = subScreens.at(screenNo);
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    }
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    QApplicationPrivate *ap = QApplicationPrivate::instance();
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    const QRect r = ap->maxWindowRect(screen);
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    if (!r.isEmpty())
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        return r;
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    return screen->region().boundingRect();
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}
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const QRect QDesktopWidget::screenGeometry(int screenNo) const
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{
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    const QScreen *screen = QScreen::instance();
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    if (screenNo == -1)
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        screenNo = 0;
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    if (!screen || screenNo < 0)
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        return QRect();
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    const QList<QScreen*> subScreens = screen->subScreens();
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    if (subScreens.size() == 0 && screenNo == 0)
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        return screen->region().boundingRect();
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    if (screenNo >= subScreens.size())
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        return QRect();
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    return subScreens.at(screenNo)->region().boundingRect();
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}
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int QDesktopWidget::screenNumber(const QWidget *w) const
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{
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    if (!w)
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        return 0;
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    QRect frame = w->frameGeometry();
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    if (!w->isWindow())
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        frame.moveTopLeft(w->mapToGlobal(QPoint(0, 0)));
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    const QPoint midpoint = (frame.topLeft() + frame.bottomRight()) / 2;
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    return screenNumber(midpoint);
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}
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int QDesktopWidget::screenNumber(const QPoint &p) const
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{
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    const QScreen *screen = QScreen::instance();
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    if (!screen || !screen->region().contains(p))
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        return -1;
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    const QList<QScreen*> subScreens = screen->subScreens();
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    if (subScreens.size() == 0)
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        return 0;
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    for (int i = 0; i < subScreens.size(); ++i)
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        if (subScreens.at(i)->region().contains(p))
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            return i;
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    return -1;
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}
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void QDesktopWidget::resizeEvent(QResizeEvent *)
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{
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}
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QT_END_NAMESPACE