mainwindow.cpp Example File

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  ** Copyright (C) 2015 The Qt Company Ltd.
  ** Contact: http://www.qt.io/licensing/
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  ** This file is part of the QtSensors module of the Qt Toolkit.
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  #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();
  }