hapticsplayer.cpp Example File

hapticsplayer/hapticsplayer.cpp
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 #include "hapticsplayer.h"

 #include <QtCore/qmetaobject.h>

 #include <QtGui/QFileDialog>
 #include <QDebug>

 static const char ENUM_THEME_EFFECT[] = "ThemeEffect";
 static const char ENUM_ANIMATION_STATE[] = "State";

 HapticsPlayer::HapticsPlayer() : actuator(0)
 {
     ui.setupUi(this);

 #if defined(Q_WS_MAEMO_5)
     // maemo5 style problem: title of groupboxes is rendered badly if there isn't enough space
     // that is, the sizehint of the title area is Preferred rather than Minimum.
     // to fix that, we manually tweak some spacers.
     ui.verticalSpacer_2->changeSize(20, 20, QSizePolicy::Expanding, QSizePolicy::Fixed);
     ui.verticalSpacer_3->changeSize(20, 20, QSizePolicy::Expanding, QSizePolicy::Fixed);
     ui.verticalSpacer_4->changeSize(20, 30, QSizePolicy::Expanding, QSizePolicy::Fixed);
     ui.verticalSpacer_5->changeSize(20, 30, QSizePolicy::Expanding, QSizePolicy::Fixed);
     ui.verticalSpacer_6->changeSize(20, 20, QSizePolicy::Expanding, QSizePolicy::Fixed);
     ui.verticalSpacer_7->changeSize(20, 30, QSizePolicy::Expanding, QSizePolicy::Fixed);
 #endif

     connect(ui.actuators, SIGNAL(currentIndexChanged(int)), SLOT(actuatorChanged()));
     connect(ui.enabled, SIGNAL(toggled(bool)), SLOT(enabledChanged(bool)));
     connect(ui.playPause, SIGNAL(pressed()), SLOT(playPauseClicked()));
     connect(ui.stop, SIGNAL(pressed()), &effect, SLOT(stop()));
     connect(ui.duration, SIGNAL(valueChanged(int)), SLOT(durationChanged(int)));
     connect(ui.intensity, SIGNAL(valueChanged(int)), SLOT(intensityChanged(int)));

     //for the envelope
     connect(ui.attackTime, SIGNAL(valueChanged(int)), SLOT(attackTimeChanged(int)));
     connect(ui.attackIntensity, SIGNAL(valueChanged(int)), SLOT(attackIntensityChanged(int)));
     connect(ui.fadeTime, SIGNAL(valueChanged(int)), SLOT(fadeTimeChanged(int)));
     connect(ui.fadeIntensity, SIGNAL(valueChanged(int)), SLOT(fadeIntensityChanged(int)));

     //for the period
     connect(ui.grpPeriod, SIGNAL(toggled(bool)), SLOT(periodToggled(bool)));
     connect(ui.period, SIGNAL(valueChanged(int)), SLOT(periodChanged(int)));

     connect(ui.instantPlay, SIGNAL(pressed()), SLOT(instantPlayClicked()));

     //file API
     connect(ui.browse, SIGNAL(pressed()), SLOT(browseClicked()));
     connect(ui.filePlayPause, SIGNAL(pressed()), SLOT(filePlayPauseClicked()));
     connect(ui.fileStop, SIGNAL(pressed()), &fileEffect, SLOT(stop()));
     // if pausing a playing effect is not supported then stop playback
     connect(&fileEffect, SIGNAL(error(QFeedbackEffect::ErrorType)), &fileEffect, SLOT(stop()));

     foreach(QFeedbackActuator *dev, QFeedbackActuator::actuators()) {
         ui.actuators->addItem(dev->name());
     }
     if (QFeedbackActuator::actuators().count() > 0)
         ui.actuators->setCurrentIndex(0);

     //adding the instant effects
     const QMetaObject &mo = QFeedbackEffect::staticMetaObject;
     const QMetaEnum &me = mo.enumerator(mo.indexOfEnumerator(ENUM_THEME_EFFECT));
     Q_ASSERT(me.keyCount());
     for (int i = 0 ; i < me.keyCount(); ++i) {
         ui.instantEffect->addItem(me.key(i));
     }

     //initialization
     durationChanged(effect.duration());
     intensityChanged(ui.intensity->value());
     attackTimeChanged(ui.attackTime->value());
     attackIntensityChanged(ui.attackIntensity->value());
     fadeTimeChanged(ui.fadeTime->value());
     fadeIntensityChanged(ui.fadeIntensity->value());

     ui.tabWidget->setTabEnabled(1, QFeedbackEffect::supportsThemeEffect());
     ui.tabWidget->setTabEnabled(2, !QFeedbackFileEffect::supportedMimeTypes().isEmpty());
 #ifdef Q_OS_SYMBIAN
     // Due to focus handling problems when using tabwidget in Qt/s60 with old non-touch-screen devices
     // we have to handle focus explicitly here, this might get fixed at some point
     connect(ui.tabWidget,SIGNAL(currentChanged(int)),this,SLOT(tabChanged(int)));
     // force initial focus to a button on the first tab
     ui.tabWidget->setCurrentIndex(0);
     ui.playPause->setFocus();
 #endif
     //that is a hackish way of updating the info concerning the effects
     startTimer(50);
 }

 QFeedbackActuator* HapticsPlayer::currentActuator()
 {
     QList<QFeedbackActuator*> devs = QFeedbackActuator::actuators();
     int index = ui.actuators->currentIndex();
     if (index == -1 || devs.count() == 0 || index > devs.count()) {
         if (!actuator) {
             actuator = new QFeedbackActuator(this);
         }
         return actuator;
     }
     return devs.at(index);
 }

 void HapticsPlayer::actuatorChanged()
 {
     QFeedbackActuator* dev = currentActuator();
     if (dev) {
         enabledChanged(dev->isEnabled());
         effect.setActuator(dev);
     }
 }

 #ifdef Q_OS_SYMBIAN
 void HapticsPlayer::tabChanged(int index)
 {
     switch(index) {
         case 0:
            ui.playPause->setFocus();
            break;
         case 1:
            ui.instantPlay->setFocus();
            break;
         case 2:
            ui.browse->setFocus();
            break;
     }
 }
 #endif

 void HapticsPlayer::enabledChanged(bool on)
 {
     if (!on)
         effect.stop();
     QFeedbackActuator* dev = currentActuator();
     if (dev) {
         dev->setEnabled(on);
         ui.enabled->setChecked(dev->isEnabled());

         if (dev->isEnabled() && (dev->isCapabilitySupported(QFeedbackActuator::Envelope))) {
             ui.envelope->setEnabled(true);
             ui.envelope->show();
         } else {
             ui.envelope->setEnabled(true);
             ui.envelope->hide();
         }
         if (dev->isEnabled() && (dev->isCapabilitySupported(QFeedbackActuator::Period))) {
             ui.grpPeriod->setEnabled(true);
             ui.grpPeriod->show();
         } else {
             ui.grpPeriod->setEnabled(false);
             ui.grpPeriod->hide();
         }
     }
 #ifdef Q_OS_SYMBIAN
     ui.playPause->setFocus();
 #endif
 }

 void HapticsPlayer::playPauseClicked()
 {
     if (effect.state() == QFeedbackEffect::Running) {
         effect.pause();
     } else {
         effect.start();
     }
 }

 void HapticsPlayer::durationChanged(int duration)
 {
     effect.setDuration(duration);
     ui.attackTime->setMaximum(duration);
     ui.fadeTime->setMaximum(duration);
     attackTimeChanged(ui.attackTime->value());
 }

 void HapticsPlayer::intensityChanged(int value)
 {
     effect.setIntensity(qreal(value) / ui.intensity->maximum());
     ui.lblIntensity->setText(QString::number(effect.intensity()));
 }

 void HapticsPlayer::timerEvent(QTimerEvent *e)
 {
     //update the display for effect
     {
         QFeedbackEffect::State newState = effect.state();
         const QMetaObject *mo = effect.metaObject();
         ui.effectState->setText(mo->enumerator(mo->indexOfEnumerator(ENUM_ANIMATION_STATE)).key(newState));
         ui.stop->setEnabled(newState != QFeedbackEffect::Stopped);
         if (effect.state() == QFeedbackEffect::Paused || effect.state() == QFeedbackEffect::Stopped)
             ui.playPause->setText(tr("Play"));
         else
             ui.playPause->setText(tr("Pause"));
     }

     //update the display for effect
     {
         QFeedbackEffect::State newState = fileEffect.state();
         const QMetaObject *mo = fileEffect.metaObject();
         ui.fileEffectState->setText(mo->enumerator(mo->indexOfEnumerator(ENUM_ANIMATION_STATE)).key(newState));
         ui.fileStop->setEnabled(newState != QFeedbackEffect::Stopped);
         ui.filePlayPause->setEnabled(fileEffect.isLoaded());
         ui.browse->setEnabled(newState == QFeedbackEffect::Stopped);
         ui.fileStatus->setText( fileEffect.isLoaded() ? QString::fromLatin1("%1 : %2 ms").arg(tr("Loaded")).arg(fileEffect.duration()) : tr("Not Loaded") );
     }
     QWidget::timerEvent(e);
 }

 void HapticsPlayer::attackTimeChanged(int attackTime)
 {
     effect.setAttackTime(attackTime);
     //let's check the boundaries
     if (attackTime + ui.fadeTime->value() > ui.duration->value())
         ui.fadeTime->setValue(ui.duration->value() - attackTime);
 }

 void HapticsPlayer::attackIntensityChanged(int attackIntensity)
 {
     effect.setAttackIntensity(qreal(attackIntensity) / ui.attackIntensity->maximum());
     ui.lblAttackIntensity->setText(QString::number(effect.attackIntensity()));
 }

 void HapticsPlayer::fadeTimeChanged(int fadeTime)
 {
     effect.setFadeTime(fadeTime);
     //let's check the boundaries
     if (fadeTime + ui.attackTime->value() > ui.duration->value())
         ui.attackTime->setValue(ui.duration->value() - fadeTime);
 }

 void HapticsPlayer::fadeIntensityChanged(int fadeIntensity)
 {
     effect.setFadeIntensity(qreal(fadeIntensity) / ui.fadeIntensity->maximum());
     ui.lblFadeIntensity->setText(QString::number(effect.fadeIntensity()));
 }

 void HapticsPlayer::periodToggled(bool on)
 {
     effect.setPeriod(on ? ui.period->value() : 0);
 }

 void HapticsPlayer::periodChanged(int value)
 {
     effect.setPeriod(value);
 }

 void HapticsPlayer::instantPlayClicked()
 {
     const QMetaObject &mo = QFeedbackEffect::staticMetaObject;
     const QMetaEnum &me = mo.enumerator(mo.indexOfEnumerator(ENUM_THEME_EFFECT));
     QFeedbackEffect::playThemeEffect(QFeedbackEffect::ThemeEffect(me.keyToValue(ui.instantEffect->currentText().toLatin1())));
 }

 void HapticsPlayer::browseClicked()
 {
     QString filename = QFileDialog::getOpenFileName(this, tr("Feedback file"));
     if (!filename.isEmpty()) {
         ui.filename->setText(QDir::toNativeSeparators(filename));
         fileEffect.setSource(QUrl::fromLocalFile(filename));
         fileEffect.load();
     }
 }

 void HapticsPlayer::filePlayPauseClicked()
 {
     if (fileEffect.state() == QFeedbackEffect::Running)
         fileEffect.pause();
     else
         fileEffect.start();
 }

 #include "moc_hapticsplayer.cpp"
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hapticsplayer.cpp Example File
