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

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the examples 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 "calibration.h"

#include <QWSPointerCalibrationData>

#include <QPainter>

#include <QFile>

#include <QTimer>

#include <QApplication>

#include <QDesktopWidget>

#include <QMouseEvent>

#include <QScreen>

#include <QWSServer>

//! [0]

Calibration::Calibration()

{

    QRect desktop = QApplication::desktop()->geometry();

    desktop.moveTo(QPoint(0, 0));

    setGeometry(desktop);

    setFocusPolicy(Qt::StrongFocus);

    setFocus();

    setModal(true);

//! [0]

//! [1]

    int width = qt_screen->deviceWidth();

    int height = qt_screen->deviceHeight();

    int dx = width / 10;

    int dy = height / 10;

    QPoint *points = data.screenPoints;

    points[QWSPointerCalibrationData::TopLeft] = QPoint(dx, dy);

    points[QWSPointerCalibrationData::BottomLeft] = QPoint(dx, height - dy);

    points[QWSPointerCalibrationData::BottomRight] = QPoint(width - dx, height - dy);

    points[QWSPointerCalibrationData::TopRight] = QPoint(width - dx, dy);

    points[QWSPointerCalibrationData::Center] = QPoint(width / 2, height / 2);

//! [1]

//! [2]

    pressCount = 0;

}

//! [2]

//! [3]

Calibration::~Calibration()

{

}

//! [3]

//! [4]

int Calibration::exec()

{

    QWSServer::mouseHandler()->clearCalibration();

    grabMouse();

    activateWindow();

    int ret = QDialog::exec();

    releaseMouse();

    return ret;

}

//! [4]

//! [5]

void Calibration::paintEvent(QPaintEvent*)

{

    QPainter p(this);

    p.fillRect(rect(), Qt::white);

    QPoint point = data.screenPoints[pressCount];

    // Map to logical coordinates in case the screen is transformed

    QSize screenSize(qt_screen->deviceWidth(), qt_screen->deviceHeight());

    point = qt_screen->mapFromDevice(point, screenSize);

    p.fillRect(point.x() - 6, point.y() - 1, 13, 3, Qt::black);

    p.fillRect(point.x() - 1, point.y() - 6, 3, 13, Qt::black);

}

//! [5]

//! [6]

void Calibration::mouseReleaseEvent(QMouseEvent *event)

{

    // Map from device coordinates in case the screen is transformed

    QSize screenSize(qt_screen->width(), qt_screen->height());

    QPoint p = qt_screen->mapToDevice(event->pos(), screenSize);

    data.devPoints[pressCount] = p;

    if (++pressCount < 5)

        repaint();

    else

        accept();

}

//! [6]

//! [7]

void Calibration::accept()

{

    Q_ASSERT(pressCount == 5);

    QWSServer::mouseHandler()->calibrate(&data);

    QDialog::accept();

}

//! [7]