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/****************************************************************************
**
** Copyright (C) 2009 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 "qdesktopwidget.h"
#include "private/qapplication_p.h"
#include "private/qgraphicssystem_p.h"
#include <QWidget>
#include "private/qwidget_p.h"
#include "private/qdesktopwidget_qpa_p.h"
QT_BEGIN_NAMESPACE
QT_USE_NAMESPACE
void QDesktopWidgetPrivate::updateScreenList()
{
Q_Q(QDesktopWidget);
QList<QPlatformScreen *> screenList = QApplicationPrivate::platformIntegration()->screens();
int targetLength = screenList.length();
int currentLength = screens.length();
// Add or remove screen widgets as necessary
if(currentLength > targetLength) {
QDesktopScreenWidget *screen;
while (currentLength-- > targetLength) {
screen = screens.takeLast();
delete screen;
}
}
else if (currentLength < targetLength) {
QDesktopScreenWidget *screen;
while (currentLength < targetLength) {
screen = new QDesktopScreenWidget(currentLength++);
screens.append(screen);
}
}
QRegion virtualGeometry;
// update the geometry of each screen widget
for (int i = 0; i < screens.length(); i++) {
QRect screenGeometry = screenList.at(i)->geometry();
screens.at(i)->setGeometry(screenGeometry);
virtualGeometry += screenGeometry;
}
q->setGeometry(virtualGeometry.boundingRect());
}
QDesktopWidget::QDesktopWidget()
: QWidget(*new QDesktopWidgetPrivate, 0, Qt::Desktop)
{
Q_D(QDesktopWidget);
setObjectName(QLatin1String("desktop"));
d->updateScreenList();
}
QDesktopWidget::~QDesktopWidget()
{
}
bool QDesktopWidget::isVirtualDesktop() const
{
return QApplicationPrivate::platformIntegration()->isVirtualDesktop();
}
int QDesktopWidget::primaryScreen() const
{
return 0;
}
int QDesktopWidget::numScreens() const
{
QPlatformIntegration *pi = QApplicationPrivate::platformIntegration();
return qMax(pi->screens().size(), 1);
}
QWidget *QDesktopWidget::screen(int screen)
{
Q_D(QDesktopWidget);
if (screen < 0 || screen >= d->screens.length())
return d->screens.at(0);
return d->screens.at(screen);
}
const QRect QDesktopWidget::availableGeometry(int screenNo) const
{
QPlatformIntegration *pi = QApplicationPrivate::platformIntegration();
QList<QPlatformScreen *> screens = pi->screens();
if (screenNo == -1)
screenNo = 0;
if (screenNo < 0 || screenNo >= screens.size())
return QRect();
else
return screens[screenNo]->availableGeometry();
}
const QRect QDesktopWidget::screenGeometry(int screenNo) const
{
QPlatformIntegration *pi = QApplicationPrivate::platformIntegration();
QList<QPlatformScreen *> screens = pi->screens();
if (screenNo == -1)
screenNo = 0;
if (screenNo < 0 || screenNo >= screens.size())
return QRect();
else
return screens[screenNo]->geometry();
}
int QDesktopWidget::screenNumber(const QWidget *w) const
{
if (!w)
return 0;
QRect frame = w->frameGeometry();
if (!w->isWindow())
frame.moveTopLeft(w->mapToGlobal(QPoint(0, 0)));
const QPoint midpoint = (frame.topLeft() + frame.bottomRight()) / 2;
return screenNumber(midpoint);
}
int QDesktopWidget::screenNumber(const QPoint &p) const
{
QPlatformIntegration *pi = QApplicationPrivate::platformIntegration();
QList<QPlatformScreen *> screens = pi->screens();
for (int i = 0; i < screens.size(); ++i)
if (screens[i]->geometry().contains(p))
return i;
return primaryScreen(); //even better would be closest screen
}
void QDesktopWidget::resizeEvent(QResizeEvent *)
{
}
QT_END_NAMESPACE
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