WebMaps.cpp Example File

    /* Copyright (c) 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 "WebMaps.hpp"

    #include <QDebug>
    #include <QFile>

    WebMaps::WebMaps(QObject *parent)
        : QObject(parent)
        , m_currentProvider(GoogleMaps)
        , m_currentViewModeIndex(0)
    {

        // Google Maps
        {
            QVariantMap entry;
            entry["scriptFile"] = QLatin1String("local:///assets/google_map.js");
            entry["mapUrl"] = QLatin1String("https://maps.googleapis.com/maps/api/js?sensor=true&libraries=places");

            QVariantList viewModes;
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Hybrid");
                viewMode["mapType"] = QLatin1String("google.maps.MapTypeId.HYBRID");
                viewModes << viewMode;
            }
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Road");
                viewMode["mapType"] = QLatin1String("google.maps.MapTypeId.ROADMAP");
                viewModes << viewMode;
            }
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Satellite");
                viewMode["mapType"] = QLatin1String("google.maps.MapTypeId.SATELLITE");
                viewModes << viewMode;
            }
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Terrain");
                viewMode["mapType"] = QLatin1String("google.maps.MapTypeId.TERRAIN");
                viewModes << viewMode;
            }
            entry["viewModes"] = viewModes;

            m_providerData.insert(GoogleMaps, entry);
        }

        // Bing Maps
        {
            QVariantMap entry;
            entry["scriptFile"] = QLatin1String("local:///assets/bing_map.js");
            entry["mapUrl"] = QLatin1String("http://ecn.dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=7.0&mkt=en-gb");

            QVariantList viewModes;
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Auto");
                viewMode["mapType"] = QLatin1String("Microsoft.Maps.MapTypeId.auto");
                viewModes << viewMode;
            }
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Aerial");
                viewMode["mapType"] = QLatin1String("Microsoft.Maps.MapTypeId.aerial");
                viewModes << viewMode;
            }
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Birds Eye");
                viewMode["mapType"] = QLatin1String("Microsoft.Maps.MapTypeId.birdsEye");
                viewModes << viewMode;
            }
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Collins Bart");
                viewMode["mapType"] = QLatin1String("Microsoft.Maps.MapTypeId.collinsBart");
                viewModes << viewMode;
            }
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Mercator");
                viewMode["mapType"] = QLatin1String("Microsoft.Maps.MapTypeId.mercator");
                viewModes << viewMode;
            }
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Ordnance Survey");
                viewMode["mapType"] = QLatin1String("Microsoft.Maps.MapTypeId.ordnanceSurvey");
                viewModes << viewMode;
            }
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Road");
                viewMode["mapType"] = QLatin1String("Microsoft.Maps.MapTypeId.road");
                viewModes << viewMode;
            }
            entry["viewModes"] = viewModes;

            m_providerData.insert(BingMaps, entry);
        }

        // OpenLayers
        {
            QVariantMap entry;
            entry["scriptFile"] = QLatin1String("local:///assets/openlayers_map.js");
            entry["mapUrl"] = QLatin1String("http://openlayers.org/api/OpenLayers.js");

            QVariantList viewModes;
            {
                QVariantMap viewMode;
                viewMode["title"] = tr("Default");
                viewMode["mapType"] = QLatin1String("dummy");
                viewModes << viewMode;
            }
            entry["viewModes"] = viewModes;

            m_providerData.insert(OpenLayers, entry);
        }
    }

    void WebMaps::nextViewMode()
    {
        const QVariantMap &entry = m_providerData[m_currentProvider];
        const QVariantList viewModes = entry["viewModes"].toList();

        m_currentViewModeIndex = ((m_currentViewModeIndex + 1) % viewModes.count());

        emit viewModeChanged();
    }

    WebMaps::Provider WebMaps::currentProvider() const
    {
        return m_currentProvider;
    }

    void WebMaps::setCurrentProvider(Provider provider)
    {
        if (m_currentProvider == provider)
            return;

        m_currentProvider = provider;
        m_currentViewModeIndex = 0;

        emit currentProviderChanged();
        emit viewModeChanged();
    }

    QString WebMaps::pageContent() const
    {
        const QVariantMap &entry = m_providerData[m_currentProvider];

        QFile file("app/native/assets/map.html");
        if (!file.open(QIODevice::ReadOnly)) {
            qWarning() << "Unable to open map template file";
            return QString();
        }

        // Replace placeholders with data from current provider
        QByteArray content = file.readAll();
        content.replace("$$SCRIPT_FILE$$", entry["scriptFile"].toByteArray());
        content.replace("$$MAP_URL$$", entry["mapUrl"].toByteArray());

        return QString::fromUtf8(content);
    }

    QString WebMaps::viewModeTitle() const
    {
        const QVariantMap &entry = m_providerData[m_currentProvider];
        const QVariantList viewModes = entry["viewModes"].toList();

        return viewModes[m_currentViewModeIndex].toMap()["title"].toString();
    }

    QString WebMaps::viewMode() const
    {
        const QVariantMap &entry = m_providerData[m_currentProvider];
        const QVariantList viewModes = entry["viewModes"].toList();

        return viewModes[m_currentViewModeIndex].toMap()["mapType"].toString();
    }