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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtCore/qmetaobject.h>
#include <QtWidgets/qapplication.h>
#include <QtWidgets/qwidget.h>
#include <QtWidgets/qpushbutton.h>
#include <QtWidgets/qlayout.h>
#include <QtWidgets/qmessagebox.h>
#if !QT_CONFIG(permissions)
#error "This example requires the permissions feature, which is not enabled on this platform"
#endif
#include <QtCore/qpermissions.h>
class PermissionWidget : public QWidget
{
Q_OBJECT
public:
explicit PermissionWidget(QWidget *parent = nullptr) : QWidget(parent)
{
QVBoxLayout *layout = new QVBoxLayout(this);
static const QPermission permissions[] = {
QCameraPermission{},
QMicrophonePermission{},
QBluetoothPermission{},
QContactsPermission{},
QCalendarPermission{},
QLocationPermission{}
};
for (auto permission : permissions) {
auto permissionName = QString::fromLatin1(permission.type().name());
QPushButton *button = new QPushButton(permissionName.sliced(1, permissionName.length() - 11));
connect(button, &QPushButton::clicked, this, &PermissionWidget::buttonClicked);
button->setProperty("permission", QVariant::fromValue(permission));
layout->addWidget(button);
}
QPalette pal = palette();
pal.setBrush(QPalette::Window, QGradient(QGradient::HappyAcid));
setPalette(pal);
}
private:
void buttonClicked()
{
auto *button = static_cast<QPushButton*>(sender());
auto permission = button->property("permission").value<QPermission>();
Q_ASSERT(permission.type().isValid());
switch (qApp->checkPermission(permission)) {
case Qt::PermissionStatus::Undetermined:
qApp->requestPermission(permission, this,
[button](const QPermission &permission) {
Q_UNUSED(permission);
emit button->clicked(); // Try again
}
);
return;
case Qt::PermissionStatus::Denied:
QMessageBox::warning(this, button->text(),
tr("Permission is needed to use %1. Please grant permission "\
"to this application in the system settings.").arg(button->text()));
return;
case Qt::PermissionStatus::Granted:
break; // Proceed
}
// All good, can use the feature
QMessageBox::information(this, button->text(),
tr("Accessing %1").arg(button->text()));
}
};
int main(int argc, char **argv)
{
QApplication app(argc, argv);
PermissionWidget widget;
widget.show();
return app.exec();
}
#include "main.moc"
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