--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/kernel/qdesktopwidget_win.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,391 @@
+/****************************************************************************
+**
+** 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 "qt_windows.h"
+#include "qapplication_p.h"
+#include "qlibrary.h"
+#include <qvector.h>
+#include <limits.h>
+#ifdef Q_WS_WINCE
+#include <sipapi.h>
+#endif
+#include "qwidget_p.h"
+#include "qdebug.h"
+
+QT_BEGIN_NAMESPACE
+
+class QDesktopWidgetPrivate : public QWidgetPrivate
+{
+public:
+    QDesktopWidgetPrivate();
+    ~QDesktopWidgetPrivate();
+
+    static void init(QDesktopWidget *that);
+    static void cleanup();
+    static int screenCount;
+    static int primaryScreen;
+
+    static QVector<QRect> *rects;
+    static QVector<QRect> *workrects;
+
+    struct MONITORINFO
+    {
+        DWORD   cbSize;
+        RECT    rcMonitor;
+        RECT    rcWork;
+        DWORD   dwFlags;
+    };
+
+    typedef BOOL (WINAPI *InfoFunc)(HMONITOR, MONITORINFO*);
+    typedef BOOL (CALLBACK *EnumProc)(HMONITOR, HDC, LPRECT, LPARAM);
+    typedef BOOL (WINAPI *EnumFunc)(HDC, LPCRECT, EnumProc, LPARAM);
+
+    static EnumFunc enumDisplayMonitors;
+    static InfoFunc getMonitorInfo;
+    static int refcount;
+};
+
+int QDesktopWidgetPrivate::screenCount = 1;
+int QDesktopWidgetPrivate::primaryScreen = 0;
+QDesktopWidgetPrivate::EnumFunc QDesktopWidgetPrivate::enumDisplayMonitors = 0;
+QDesktopWidgetPrivate::InfoFunc QDesktopWidgetPrivate::getMonitorInfo = 0;
+QVector<QRect> *QDesktopWidgetPrivate::rects = 0;
+QVector<QRect> *QDesktopWidgetPrivate::workrects = 0;
+static int screen_number = 0;
+int QDesktopWidgetPrivate::refcount = 0;
+#ifdef Q_WS_WINCE_WM
+// Use SIP information, if available
+// SipGetInfo is not supported by SSDK (no definition!). 
+static inline void qt_get_sip_info(QRect &rect)
+{
+    SIPINFO sip;
+    memset(&sip, 0, sizeof(SIPINFO));
+    sip.cbSize = sizeof(SIPINFO);
+    if (SipGetInfo(&sip))
+        rect = QRect(QPoint(sip.rcVisibleDesktop.left, sip.rcVisibleDesktop.top),
+        QPoint(sip.rcVisibleDesktop.right - 1, sip.rcVisibleDesktop.bottom - 1));
+}
+#endif
+
+
+BOOL CALLBACK enumCallback(HMONITOR hMonitor, HDC, LPRECT, LPARAM)
+{
+    QDesktopWidgetPrivate::screenCount++;
+    QDesktopWidgetPrivate::rects->resize(QDesktopWidgetPrivate::screenCount);
+    QDesktopWidgetPrivate::workrects->resize(QDesktopWidgetPrivate::screenCount);
+    // Get the MONITORINFO block
+    QDesktopWidgetPrivate::MONITORINFO info;
+    memset(&info, 0, sizeof(QDesktopWidgetPrivate::MONITORINFO));
+    info.cbSize = sizeof(QDesktopWidgetPrivate::MONITORINFO);
+    BOOL res = QDesktopWidgetPrivate::getMonitorInfo(hMonitor, &info);
+    if (!res) {
+        (*QDesktopWidgetPrivate::rects)[screen_number] = QRect();
+        (*QDesktopWidgetPrivate::workrects)[screen_number] = QRect();
+        return true;
+    }
+
+    // Fill list of rects
+    RECT r = info.rcMonitor;
+    QRect qr(QPoint(r.left, r.top), QPoint(r.right - 1, r.bottom - 1));
+    (*QDesktopWidgetPrivate::rects)[screen_number] = qr;
+
+    r = info.rcWork;
+    qr = QRect(QPoint(r.left, r.top), QPoint(r.right - 1, r.bottom - 1));
+    (*QDesktopWidgetPrivate::workrects)[screen_number] = qr;
+
+    if (info.dwFlags & 0x00000001) //MONITORINFOF_PRIMARY
+        QDesktopWidgetPrivate::primaryScreen = screen_number;
+
+    ++screen_number;
+    // Stop the enumeration if we have them all
+    return true;
+}
+
+QDesktopWidgetPrivate::QDesktopWidgetPrivate()
+{
+    ++refcount;
+}
+
+void QDesktopWidgetPrivate::init(QDesktopWidget *that)
+{
+    if (rects)
+        return;
+
+    rects = new QVector<QRect>();
+    workrects = new QVector<QRect>();
+    screenCount = 0;
+
+#ifndef Q_OS_WINCE
+    QLibrary user32Lib(QLatin1String("user32"));
+    if (user32Lib.load()) {
+        enumDisplayMonitors = (EnumFunc)user32Lib.resolve("EnumDisplayMonitors");
+        getMonitorInfo = (InfoFunc)user32Lib.resolve("GetMonitorInfoW");
+    }
+
+    if (!enumDisplayMonitors || !getMonitorInfo) {
+        screenCount = GetSystemMetrics(80);  // SM_CMONITORS
+        rects->resize(screenCount);
+        for (int i = 0; i < screenCount; ++i)
+            rects->replace(i, that->rect());
+        return;
+    }
+    // Calls enumCallback
+    enumDisplayMonitors(0, 0, enumCallback, 0);
+    enumDisplayMonitors = 0;
+    getMonitorInfo = 0;
+#else
+    QLibrary coreLib(QLatin1String("coredll"));
+    if (coreLib.load()) {
+        // CE >= 4.0 case
+        enumDisplayMonitors = (EnumFunc)coreLib.resolve("EnumDisplayMonitors");
+        getMonitorInfo = (InfoFunc)coreLib.resolve("GetMonitorInfo");
+    }
+
+    if ((!enumDisplayMonitors || !getMonitorInfo)) {
+        screenCount = GetSystemMetrics(SM_CMONITORS);
+        return;
+    }
+
+    if (!coreLib.isLoaded() || !enumDisplayMonitors || !getMonitorInfo) {
+        rects->resize(screenCount);
+        for (int i = 0; i < screenCount; ++i)
+            (*rects)[i] = that->rect();
+
+        RECT r;
+        SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
+        QRect qr = QRect(QPoint(r.left, r.top), QPoint(r.right - 1, r.bottom - 1));
+
+#if defined(Q_WS_WINCE_WM)
+        qt_get_sip_info(qr);
+#endif
+
+        workrects->resize(screenCount);
+        for (int j = 0; j < screenCount; ++j)
+            (*workrects)[j] = qr;
+        return;
+    }
+
+    // Calls enumCallback
+    enumDisplayMonitors(0, 0, enumCallback, 0);
+    enumDisplayMonitors = 0;
+    getMonitorInfo = 0;
+#endif // Q_WS_WINCE
+}
+
+QDesktopWidgetPrivate::~QDesktopWidgetPrivate()
+{
+    if (!--refcount)
+        cleanup();
+}
+
+void QDesktopWidgetPrivate::cleanup()
+{
+    screen_number = 0;
+    screenCount = 1;
+    primaryScreen = 0;
+    enumDisplayMonitors = 0;
+    getMonitorInfo = 0;
+    delete rects;
+    rects = 0;
+    delete workrects;
+    workrects = 0;
+}
+
+/*
+    \omit
+    Function is commented out in header
+    \fn void *QDesktopWidget::handle(int screen) const
+
+    Returns the window system handle of the display device with the
+    index \a screen, for low-level access.  Using this function is not
+    portable.
+
+    The return type varies with platform; see qwindowdefs.h for details.
+
+    \sa x11Display(), QPaintDevice::handle()
+    \endomit
+*/
+
+QDesktopWidget::QDesktopWidget()
+    : QWidget(*new QDesktopWidgetPrivate, 0, Qt::Desktop)
+{
+    setObjectName(QLatin1String("desktop"));
+    QDesktopWidgetPrivate::init(this);
+}
+
+QDesktopWidget::~QDesktopWidget()
+{
+}
+
+bool QDesktopWidget::isVirtualDesktop() const
+{
+    return true;
+}
+
+int QDesktopWidget::primaryScreen() const
+{
+    return d_func()->primaryScreen;
+}
+
+int QDesktopWidget::numScreens() const
+{
+    return d_func()->screenCount;
+}
+
+QWidget *QDesktopWidget::screen(int /* screen */)
+{
+    // It seems that a Qt::WType_Desktop cannot be moved?
+    return this;
+}
+
+//
+// MSVC 7.10 warns that d (the result of the expanded Q_D macro) as a local variable that is not referenced.
+// Therefore, we ignore that warning with the following pragmas
+// I've also tried to eliminate the macro, but to no use...
+// We pop it further down
+#ifdef Q_CC_MSVC
+# pragma warning(push)
+# pragma warning(disable : 4189)
+#endif
+const QRect QDesktopWidget::availableGeometry(int screen) const
+{
+    Q_D(const QDesktopWidget);
+#ifdef Q_WS_WINCE_WM
+    for(int i=0; i < d->workrects->size(); ++i)
+        qt_get_sip_info((*d->workrects)[i]);
+#endif
+    if (screen < 0 || screen >= d->screenCount)
+        screen = d->primaryScreen;
+
+    return d->workrects->at(screen);
+}
+
+const QRect QDesktopWidget::screenGeometry(int screen) const
+{
+    const QDesktopWidgetPrivate *d = d_func();
+    if (screen < 0 || screen >= d->screenCount)
+        screen = d->primaryScreen;
+
+    return d->rects->at(screen);
+}
+
+int QDesktopWidget::screenNumber(const QWidget *widget) const
+{
+    Q_D(const QDesktopWidget);
+    if (!widget)
+        return d->primaryScreen;
+
+    QRect frame = widget->frameGeometry();
+    if (!widget->isWindow())
+        frame.moveTopLeft(widget->mapToGlobal(QPoint(0,0)));
+
+    int maxSize = -1;
+    int maxScreen = -1;
+
+    for (int i = 0; i < d->screenCount; ++i) {
+        QRect sect = d->rects->at(i).intersected(frame);
+        int size = sect.width() * sect.height();
+        if (size > maxSize && sect.width() > 0 && sect.height() > 0) {
+            maxSize = size;
+            maxScreen = i;
+        }
+    }
+
+    return maxScreen;
+}
+
+int QDesktopWidget::screenNumber(const QPoint &point) const
+{
+    Q_D(const QDesktopWidget);
+
+    int closestScreen = -1;
+    int shortestDistance = INT_MAX;
+
+    for (int i = 0; i < d->screenCount; ++i) {
+        int thisDistance = d->pointToRect(point, d->rects->at(i));
+        if (thisDistance < shortestDistance) {
+            shortestDistance = thisDistance;
+            closestScreen = i;
+        }
+    }
+
+    return closestScreen;
+}
+
+void QDesktopWidget::resizeEvent(QResizeEvent *)
+{
+    Q_D(QDesktopWidget);
+    const QVector<QRect> oldrects(*d->rects);
+    const QVector<QRect> oldworkrects(*d->workrects);
+    int oldscreencount = d->screenCount;
+
+    QDesktopWidgetPrivate::cleanup();
+    QDesktopWidgetPrivate::init(this);
+#ifdef Q_WS_WINCE_WM
+    for(int i=0; i < d->workrects->size(); ++i)
+        qt_get_sip_info((*d->workrects)[i]);
+#endif
+
+    for (int i = 0; i < qMin(oldscreencount, d->screenCount); ++i) {
+        const QRect oldrect = oldrects[i];
+        const QRect newrect = d->rects->at(i);
+        if (oldrect != newrect)
+            emit resized(i);
+    }
+
+    for (int j = 0; j < qMin(oldscreencount, d->screenCount); ++j) {
+        const QRect oldrect = oldworkrects[j];
+        const QRect newrect = d->workrects->at(j);
+        if (oldrect != newrect)
+            emit workAreaResized(j);
+    }
+
+    if (oldscreencount != d->screenCount) {
+        emit screenCountChanged(d->screenCount);
+    }
+}
+
+#ifdef Q_CC_MSVC
+# pragma warning(pop)
+#endif
+
+QT_END_NAMESPACE