Qt 5.7 | Qt WebEngine | WebEngine Demo Browser Example | featurepermissionbar.cpp Example File

Qt 5.7.1 Reference Documentation

# featurepermissionbar.cpp Example File

webenginewidgets/demobrowser/featurepermissionbar.cpp

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      #include "featurepermissionbar.h"

      #include <QLabel>
      #include <QPushButton>
      #include <QHBoxLayout>
      #include <QUrl>
      #include <QPropertyAnimation>

      static const int defaultHeight = 30;

      static QString textForPermissionType(QWebEnginePage::Feature type)
      {
          switch (type) {
          case QWebEnginePage::Notifications:
              return QObject::tr("use desktop notifications");
          case QWebEnginePage::Geolocation:
              return QObject::tr("use your position");
          case QWebEnginePage::MediaAudioCapture:
              return QObject::tr("use your microphone");
          case QWebEnginePage::MediaVideoCapture:
              return QObject::tr("use your camera");
          case QWebEnginePage::MediaAudioVideoCapture:
              return QObject::tr("use your camera and microphone");
          case QWebEnginePage::MouseLock:
              return QObject::tr("lock your mouse");
          default:
              Q_UNREACHABLE();
          }
          return QString();
      }

      FeaturePermissionBar::FeaturePermissionBar(QWidget *view)
          : QWidget(view)
          , m_messageLabel(new QLabel(this))
      {
          setAutoFillBackground(true);
          QHBoxLayout *l = new QHBoxLayout;
          setLayout(l);
          l->setContentsMargins(defaultHeight, 0, 0, 0);
          l->addWidget(m_messageLabel);
          l->addStretch();
          QPushButton *allowButton = new QPushButton(tr("Allow"), this);
          QPushButton *denyButton = new QPushButton(tr("Deny"), this);
          QPushButton *discardButton = new QPushButton(QIcon(QStringLiteral(":closetab.png")), QString(), this);
          connect(allowButton, &QPushButton::clicked, this, &FeaturePermissionBar::permissionGranted);
          connect(denyButton, &QPushButton::clicked, this, &FeaturePermissionBar::permissionDenied);
          connect(discardButton, &QPushButton::clicked, this, &FeaturePermissionBar::permissionUnknown);
          connect(allowButton, &QPushButton::clicked, this, &QObject::deleteLater);
          connect(denyButton, &QPushButton::clicked, this, &QObject::deleteLater);
          connect(discardButton, &QPushButton::clicked, this, &QObject::deleteLater);
          l->addWidget(denyButton);
          l->addWidget(allowButton);
          l->addWidget(discardButton);
          setGeometry(0, -defaultHeight, view->width(), defaultHeight);
      }

      void FeaturePermissionBar::requestPermission(const QUrl &securityOrigin, QWebEnginePage::Feature feature)
      {
          m_securityOrigin = securityOrigin;
          m_feature = feature;
          m_messageLabel->setText(tr("%1 wants to %2.").arg(securityOrigin.host()).arg(textForPermissionType(feature)));
          show();
          // Ease in
          QPropertyAnimation *animation = new QPropertyAnimation(this);
          animation->setTargetObject(this);
          animation->setPropertyName(QByteArrayLiteral("pos"));
          animation->setDuration(300);
          animation->setStartValue(QVariant::fromValue(pos()));
          animation->setEndValue(QVariant::fromValue(QPoint(0,0)));
          animation->setEasingCurve(QEasingCurve::InOutQuad);
          animation->start(QPropertyAnimation::DeleteWhenStopped);
      }

      void FeaturePermissionBar::permissionDenied()
      {
          emit featurePermissionProvided(m_securityOrigin, m_feature, QWebEnginePage::PermissionDeniedByUser);
      }

      void FeaturePermissionBar::permissionGranted()
      {
          emit featurePermissionProvided(m_securityOrigin, m_feature, QWebEnginePage::PermissionGrantedByUser);
      }

      void FeaturePermissionBar::permissionUnknown()
      {
          emit featurePermissionProvided(m_securityOrigin, m_feature, QWebEnginePage::PermissionUnknown);
      }