MapViewDemo.cpp Example File

mapview/src/MapViewDemo.cpp
    /* Copyright (c) 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 "MapViewDemo.hpp"

    #include <bb/cascades/AbstractPane>
    #include <bb/cascades/Application>
    #include <bb/cascades/Container>
    #include <bb/cascades/maps/MapView>
    #include <bb/cascades/maps/MapData>
    #include <bb/cascades/maps/DataProvider>
    #include <bb/cascades/QmlDocument>
    #include <bb/platform/geo/Point>
    #include <bb/platform/geo/GeoLocation>
    #include <bb/platform/geo/Marker>
    #include <bb/UIToolkitSupport>

    using namespace bb;
    using namespace bb::cascades;
    using namespace bb::cascades::maps;
    using namespace bb::platform::geo;

    MapViewDemo::MapViewDemo(bb::cascades::Application *app)
        : QObject(app)
    {
        // create scene document from main.qml asset
        // set parent to created document to ensure it exists for the whole application lifetime
        QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(this);
        qml->setContextProperty("_mapViewTest", this);

        // create root object for the UI
        AbstractPane *root = qml->createRootObject<AbstractPane>();

        QObject* mapViewAsQObject = root->findChild<QObject*>(QString("mapViewObj"));
        if (mapViewAsQObject) {
            mapView = qobject_cast<bb::cascades::maps::MapView*>(mapViewAsQObject);
            mapView->setCaptionGoButtonVisible(true);
            if (mapView) {
                // creating a data provider just for the device location object. that way, when the clear function is call, this object is not removed.
                DataProvider* deviceLocDataProv = new DataProvider("device-location-data-provider");
                mapView->mapData()->addProvider(deviceLocDataProv);

                // create a geolocation just for the device's location
                deviceLocation = new GeoLocation("device-location-id");
                deviceLocation->setName("Current Device Location");
                deviceLocation->setDescription("<html><a href=\"http://www.blackberry.com\">Hyperlinks</a> are super useful in bubbles.</html>");

                // for that location, replace the standard default pin with the provided bulls eye asset
                Marker bullseye = Marker(UIToolkitSupport::absolutePathFromUrl(
                                    QUrl("asset:///images/me.png")), QSize(60, 60),
                                    QPoint(29, 29), QPoint(29, 1));
                deviceLocation->setMarker(bullseye);

                deviceLocDataProv->add(deviceLocation);
            }
        }

        // set created root object as a scene
        app->setScene(root);
    }
    void MapViewDemo::addPinAtCurrentMapCenter() {
        if (mapView) {
            GeoLocation* newDrop = new GeoLocation();
            newDrop->setLatitude(mapView->latitude());
            newDrop->setLongitude(mapView->longitude());
            QString desc = QString("Coordinates: %1, %2").arg(mapView->latitude(),
                                    0, 'f', 3).arg(mapView->longitude(), 0, 'f', 3);
            newDrop->setName("Dropped Pin");
            newDrop->setDescription(desc);

            // use the marker in the assets, as opposed to the default marker
            Marker flag;
            flag.setIconUri(UIToolkitSupport::absolutePathFromUrl(
                            QUrl("asset:///images/on_map_pin.png")));
            flag.setIconSize(QSize(60, 60));
            flag.setLocationCoordinate(QPoint(20, 59));
            flag.setCaptionTailCoordinate(QPoint(20, 1));
            newDrop->setMarker(flag);

            mapView->mapData()->add(newDrop);
        }
    }
    void MapViewDemo::clearPins() {
        if (mapView) {
            // this will remove all pins, except the "device location" pin, as it's in a different data provider
            mapView->mapData()->defaultProvider()->clear();
        }
    }
    void MapViewDemo::updateDeviceLocation(double lat, double lon) {
        qDebug() << "MapViewDemo::updateDeviceLocation( " << lat << ", " << lon
                << " )";
        if (deviceLocation) {
            deviceLocation->setLatitude(lat);
            deviceLocation->setLongitude(lon);
        }
        mapView->setLatitude(lat);
        mapView->setLongitude(lon);
    }