author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 03 May 2010 13:18:40 +0300 | |
changeset 4 | 90517678cc4f |
child 5 | 453da2cfceef |
permissions | -rw-r--r-- |
4
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/**************************************************************************** |
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** |
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (qt-info@nokia.com) |
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** |
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** This file is part of the Qt Mobility Components. |
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** |
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** $QT_BEGIN_LICENSE:LGPL$ |
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** No Commercial Usage |
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** This file contains pre-release code and may not be distributed. |
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** You may use this file in accordance with the terms and conditions |
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** contained in the Technology Preview License Agreement accompanying |
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** this package. |
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** |
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** GNU Lesser General Public License Usage |
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** Alternatively, this file may be used under the terms of the GNU Lesser |
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** General Public License version 2.1 as published by the Free Software |
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** Foundation and appearing in the file LICENSE.LGPL included in the |
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** packaging of this file. Please review the following information to |
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** ensure the GNU Lesser General Public License version 2.1 requirements |
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at qt-info@nokia.com. |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** $QT_END_LICENSE$ |
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** |
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****************************************************************************/ |
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|
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#include "freefallform.h" |
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|
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const int KTreshold = 2; |
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|
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FreeFallForm::FreeFallForm(QWidget *parent) |
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: QWidget(parent) |
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{ |
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setupUi(this); |
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dropItLabel->setText(""); |
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|
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m_accelerationSensor.addFilter(this); |
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m_accelerationSensor.start(); |
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m_freeFallState = StateNotStarted; |
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} |
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|
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void FreeFallForm::on_setupButton_clicked() |
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{ |
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setupButton->setDisabled(true); |
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dropItLabel->setText("Drop it!"); |
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freeFallTimeLabel->setText("-"); |
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freeFallHeightLabel->setText("-"); |
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m_freeFallState = StateSetup; |
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} |
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|
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bool FreeFallForm::filter(QAccelerometerReading *reading) |
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{ |
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switch (m_freeFallState) { |
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case StateSetup: |
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if (abs(reading->x()) < KTreshold && abs(reading->y()) < KTreshold && abs(reading->z()) < KTreshold) { |
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m_freeFallTimer.start(); |
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m_freeFallState = StateFalling; |
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} |
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break; |
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case StateFalling: |
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if (abs(reading->x()) > KTreshold || abs(reading->y()) > KTreshold || abs(reading->z()) > KTreshold) { |
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freeFallTimeLabel->setNum(m_freeFallTimer.elapsed()); |
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qreal t = (qreal(m_freeFallTimer.elapsed()) / 1000); |
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freeFallHeightLabel->setNum(9.81 / 2 * t * t); |
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m_freeFallState = StateNotStarted; |
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setupButton->setEnabled(true); |
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setupButton->setFocus(); |
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dropItLabel->setText(""); |
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} |
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break; |
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default: |
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break; |
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} |
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|
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return false; |
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} |