Qt-based BB10 API Examples Documentation

main.cpp Example File

imagerotation/src/main.cpp
    /*
     * Copyright (c) 2011, 2012, 2013  BlackBerry Limited.
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     * http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    #include "rotationsensor.hpp"

    #include <bb/cascades/AbstractPane>
    #include <bb/cascades/Application>
    #include <bb/cascades/QmlDocument>

    using namespace bb::cascades;

    /**
     * This sample application shows the picture of Mona Lisa on the screen.
     * When the user rotates the device to the left or right-hand side, the picture
     * will always stay vertical to the ground.
     *
     * In this example we show how to use the QRotationSensor from the Qt sensors module
     * to calculate the current rotation angle of the device.
     */
    Q_DECL_EXPORT int main(int argc, char **argv)
    {
        Application app(argc, argv);

        // Create the rotation sensor object
        RotationSensor sensor;

        // Load the UI description from main.qml
        QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(&app);

        // Make the RotationSensor object available to the UI as context property
        qml->setContextProperty("_sensor", &sensor);

        // Create the application scene
        AbstractPane *appPage = qml->createRootObject<AbstractPane>();
        Application::instance()->setScene(appPage);

        return Application::exec();
    }