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/****************************************************************************

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#import <Cocoa/Cocoa.h>

#include "qapplication.h"

#include "qdesktopwidget.h"

#include <private/qt_mac_p.h>

#include "qwidget_p.h"

#include <private/qt_cocoa_helpers_mac_p.h>

#include <private/qdesktopwidget_mac_p.h>

QT_BEGIN_NAMESPACE

QT_USE_NAMESPACE

/*****************************************************************************

  Externals

 *****************************************************************************/

/*****************************************************************************

  QDesktopWidget member functions

 *****************************************************************************/

Q_GLOBAL_STATIC(QDesktopWidgetImplementation, qdesktopWidgetImplementation)

QDesktopWidgetImplementation::QDesktopWidgetImplementation()

    : appScreen(0)

{

    onResize();

}

QDesktopWidgetImplementation::~QDesktopWidgetImplementation()

{

}

QDesktopWidgetImplementation *QDesktopWidgetImplementation::instance()

{

    return qdesktopWidgetImplementation();

}

QRect QDesktopWidgetImplementation::availableRect(int screenIndex) const

{

    if (screenIndex < 0 || screenIndex >= screenCount)

        screenIndex = appScreen;

	return availableRects[screenIndex].toRect(); 

}

QRect QDesktopWidgetImplementation::screenRect(int screenIndex) const

{

    if (screenIndex < 0 || screenIndex >= screenCount)

        screenIndex = appScreen;

    return screenRects[screenIndex].toRect();

}

void QDesktopWidgetImplementation::onResize()

{

    QMacCocoaAutoReleasePool pool; 

    NSArray *displays = [NSScreen screens]; 

    screenCount = [displays count]; 

    screenRects.clear(); 

    availableRects.clear(); 

    NSRect primaryRect = [[displays objectAtIndex:0] frame]; 

    for (int i = 0; i<screenCount; i++) { 

        NSRect r = [[displays objectAtIndex:i] frame]; 

        const int flippedY = - r.origin.y +            // account for position offset and 

              primaryRect.size.height - r.size.height; // height difference. 

        screenRects.append(QRectF(r.origin.x, flippedY, 

            r.size.width, r.size.height)); 

        r = [[displays objectAtIndex:i] visibleFrame]; 

        availableRects.append(QRectF(r.origin.x, flippedY, 

                r.size.width, r.size.height)); 

    } 

}

QDesktopWidget::QDesktopWidget()

    : QWidget(0, Qt::Desktop)

{

    setObjectName(QLatin1String("desktop"));

    setAttribute(Qt::WA_WState_Visible);

}

QDesktopWidget::~QDesktopWidget()

{

}

bool QDesktopWidget::isVirtualDesktop() const

{

    return true;

}

int QDesktopWidget::primaryScreen() const

{

    return qdesktopWidgetImplementation()->appScreen;

}

int QDesktopWidget::numScreens() const

{

    return qdesktopWidgetImplementation()->screenCount;

}

QWidget *QDesktopWidget::screen(int)

{

    return this;

}

const QRect QDesktopWidget::availableGeometry(int screen) const

{

    return qdesktopWidgetImplementation()->availableRect(screen);

}

const QRect QDesktopWidget::screenGeometry(int screen) const

{

    return qdesktopWidgetImplementation()->screenRect(screen);

}

int QDesktopWidget::screenNumber(const QWidget *widget) const

{

    QDesktopWidgetImplementation *d = qdesktopWidgetImplementation();

    if (!widget)

        return d->appScreen;

    QRect frame = widget->frameGeometry();

    if (!widget->isWindow())

        frame.moveTopLeft(widget->mapToGlobal(QPoint(0,0)));

    int maxSize = -1, maxScreen = -1;

    for (int i = 0; i < d->screenCount; ++i) {

        QRect rr = d->screenRect(i);

        QRect sect = rr.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

{

    QDesktopWidgetImplementation *d = qdesktopWidgetImplementation();

    int closestScreen = -1;

    int shortestDistance = INT_MAX;

    for (int i = 0; i < d->screenCount; ++i) {

        QRect rr = d->screenRect(i);

        int thisDistance = QWidgetPrivate::pointToRect(point, rr);

        if (thisDistance < shortestDistance) {

            shortestDistance = thisDistance;

            closestScreen = i;

        }

    }

    return closestScreen;

}

void QDesktopWidget::resizeEvent(QResizeEvent *)

{

    QDesktopWidgetImplementation *d = qdesktopWidgetImplementation();

    const int oldScreenCount = d->screenCount;

    const QVector<QRectF> oldRects(d->screenRects);

    const QVector<QRectF> oldWorks(d->availableRects);

    d->onResize();

    for (int i = 0; i < qMin(oldScreenCount, d->screenCount); ++i) {

        if (oldRects.at(i) != d->screenRects.at(i))

            emit resized(i);

    }

    for (int i = 0; i < qMin(oldScreenCount, d->screenCount); ++i) {

        if (oldWorks.at(i) != d->availableRects.at(i))

            emit workAreaResized(i);

    }

    if (oldScreenCount != d->screenCount)

        emit screenCountChanged(d->screenCount);

}

QT_END_NAMESPACE