mainwindow.cpp Example File

 /****************************************************************************
 **
 ** Copyright (C) 2017 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the QtSensors module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
 ** BSD License Usage
 ** Alternatively, you may use this file under the terms of the BSD license
 ** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of The Qt Company Ltd nor the names of its
 **     contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtCore/QDebug>
 #include <QtWidgets/QTreeWidget>

 #include "mainwindow.h"
 #include "ui_mainwindow.h"

 #include <qsensorgesture.h>
 #include <qsensorgesturemanager.h>

 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent),
       ui(new Ui::MainWindow)
 {
     ui->setupUi(this);

     QSensorGestureManager manager;

     Q_FOREACH (const QString &gesture, manager.gestureIds()) {

         QTreeWidgetItem *gestureId = new QTreeWidgetItem(ui->treeWidget);
         QStringList recognizerSignals =  manager.recognizerSignals(gesture);
         gestureId->setText(0,gesture);

         for (int i = 0; i < recognizerSignals.count(); i++) {
             QTreeWidgetItem *oneSignal = new QTreeWidgetItem(gestureId);
             oneSignal->setText(0,recognizerSignals.at(i));
         }
         ui->treeWidget->insertTopLevelItem(0,gestureId);
     }

     ui->textEdit->setReadOnly(true);
 }

 MainWindow::~MainWindow()
 {
     delete ui;
 }

 void MainWindow::detectedShake(const QString &name)
 {
     QString str = "<font size=+2><B>"+name+"</b></font><br>";
     ui->textEdit->insertHtml(str);
     ui->textEdit->ensureCursorVisible();
 }

 void MainWindow::on_pushButton_clicked()
 {
     ui->textEdit->clear();
 }

 void MainWindow::onShake()
 {
     QString str = "<font size=+2><B>onShake()</b></font><br>";
     ui->textEdit->insertHtml(str);
     ui->textEdit->ensureCursorVisible();
 }

 void MainWindow::on_startPushButton_clicked()
 {
     if (ui->treeWidget->currentItem() == 0)
             return;
     QString currentRecognizer;

     if (ui->treeWidget->currentItem()->childCount() == 0) {
         currentRecognizer = ui->treeWidget->currentItem()->parent()->text(0);
     } else {
         currentRecognizer = ui->treeWidget->currentItem()->text(0);
     }

     if (recognizerMap.contains(currentRecognizer))
         return;
     QSensorGestureManager manager;
     QSensorGesture *thisGesture = new QSensorGesture(QStringList() << currentRecognizer, this);

     if (currentRecognizer.contains("QtSensors.shake")) {
         connect(thisGesture,SIGNAL(shake()),
                 this,SLOT(onShake()));
     }

     connect(thisGesture,SIGNAL(detected(QString)),
             this,SLOT(detectedShake(QString)));
     thisGesture->startDetection();


     recognizerMap.insert(currentRecognizer,thisGesture);

     QString str = QString("<font size=+2><B>Started %1</b></font><br>").arg(currentRecognizer);
     ui->textEdit->insertHtml(str);
     ui->textEdit->ensureCursorVisible();
 }

 void MainWindow::on_stopPushButton_clicked()
 {
     if (ui->treeWidget->currentItem() == 0)
             return;
     QString currentRecognizer;

     if (ui->treeWidget->currentItem()->childCount() == 0) {
         currentRecognizer = ui->treeWidget->currentItem()->parent()->text(0);
     } else {
         currentRecognizer = ui->treeWidget->currentItem()->text(0);
     }

     if (!recognizerMap.contains(currentRecognizer))
         return;

         recognizerMap[currentRecognizer]->stopDetection();

         if (currentRecognizer == "QtSensors.shake") {
             disconnect(recognizerMap[currentRecognizer],SIGNAL(shake()),
                        this,SLOT(onShake()));
         }
         disconnect(recognizerMap[currentRecognizer],SIGNAL(detected(QString)),
                    this,SLOT(detectedShake(QString)));

         recognizerMap.take(currentRecognizer);

     QString str = QString("<font size=+2><B>Stopped %1</b></font><br>").arg(currentRecognizer);
     ui->textEdit->insertHtml(str);
     ui->textEdit->ensureCursorVisible();
 }