1 files changed, 180 insertions, 0 deletions
diff --git a/src/gui/kernel/qdesktopwidget_qpa.cpp b/src/gui/kernel/qdesktopwidget_qpa.cpp
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+++ b/src/gui/kernel/qdesktopwidget_qpa.cpp
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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()
+{
+    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;
+    bool doVirtualGeometry = QApplicationPrivate::platformIntegration()->isVirtualDesktop();
+
+    // 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);
+        if (doVirtualGeometry)
+            virtualGeometry += screenGeometry;
+    }
+
+    virtualScreen.setGeometry(virtualGeometry.boundingRect());
+    Q_Q(QDesktopWidget);
+    q->setGeometry(virtualScreen.geometry());
+}
+
+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 (QApplicationPrivate::platformIntegration()->isVirtualDesktop())
+        return &d->virtualScreen;
+    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