diff options
Diffstat (limited to 'src/widgets/kernel/qdesktopwidget_qpa.cpp')
-rw-r--r-- | src/widgets/kernel/qdesktopwidget_qpa.cpp | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/src/widgets/kernel/qdesktopwidget_qpa.cpp b/src/widgets/kernel/qdesktopwidget_qpa.cpp new file mode 100644 index 0000000000..380daee8c0 --- /dev/null +++ b/src/widgets/kernel/qdesktopwidget_qpa.cpp @@ -0,0 +1,171 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 "qdesktopwidget.h" +#include "qscreen.h" +#include "private/qapplication_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<QScreen *> screenList = QGuiApplication::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 QGuiApplication::primaryScreen()->virtualSiblings().size() > 1; +} + +int QDesktopWidget::primaryScreen() const +{ + return 0; +} + +int QDesktopWidget::numScreens() const +{ + return qMax(QGuiApplication::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 +{ + QList<QScreen *> screens = QGuiApplication::screens(); + if (screenNo == -1) + screenNo = 0; + if (screenNo < 0 || screenNo >= screens.size()) + return QRect(); + else + return screens.at(screenNo)->availableGeometry(); +} + +const QRect QDesktopWidget::screenGeometry(int screenNo) const +{ + QList<QScreen *> screens = QGuiApplication::screens(); + if (screenNo == -1) + screenNo = 0; + if (screenNo < 0 || screenNo >= screens.size()) + return QRect(); + else + return screens.at(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 +{ + QList<QScreen *> screens = QGuiApplication::screens(); + + for (int i = 0; i < screens.size(); ++i) + if (screens.at(i)->geometry().contains(p)) + return i; + + return primaryScreen(); //even better would be closest screen +} + +void QDesktopWidget::resizeEvent(QResizeEvent *) +{ +} + +QT_END_NAMESPACE |