qgeotiledmappingmanagerenginegoogle.cpp

/****************************************************************************
**
** Copyright (C) 2013 Aaron McCarthy <mccarthy.aaron@gmail.com>
** Contact: http://www.qt-project.org/legal
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** ensure the GNU General Public License version 3.0 requirements will be
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** 2015.4.4
** Adapted for google maps with the intent of use for QGroundControl
**
** Gus Grubba <mavlink@grubba.com>
**
****************************************************************************/

#include <QtLocation/private/qgeocameracapabilities_p.h>
#include <QtLocation/private/qgeomaptype_p.h>
#include <QtLocation/private/qgeotiledmapdata_p.h>
#include <QDir>
#include <QStandardPaths>

#include "qgeotiledmappingmanagerenginegoogle.h"
#include "qgeotilefetchergoogle.h"

QT_BEGIN_NAMESPACE

QGeoTiledMappingManagerEngineGoogle::QGeoTiledMappingManagerEngineGoogle(const QVariantMap &parameters, QGeoServiceProvider::Error *error, QString *errorString)
:   QGeoTiledMappingManagerEngine()
{
    QGeoCameraCapabilities cameraCaps;
    cameraCaps.setMinimumZoomLevel(0.0);
    cameraCaps.setMaximumZoomLevel(22.0);
    setCameraCapabilities(cameraCaps);

    setTileSize(QSize(256, 256));

    QList<QGeoMapType> mapTypes;
    mapTypes << QGeoMapType(QGeoMapType::StreetMap,         tr("Street Map"),   tr("Google street map"),    false, false, 1);
    mapTypes << QGeoMapType(QGeoMapType::SatelliteMapDay,   tr("Satellite Map"),tr("Google satellite map"), false, false, 2);
    mapTypes << QGeoMapType(QGeoMapType::TerrainMap,        tr("Terrain Map"),  tr("Google terrain map"),   false, false, 3);
    // mapTypes << QGeoMapType(QGeoMapType::HybridMap,      tr("Hybrid Map"),   tr("Google hybrid map"),    false, false, 4);
    setSupportedMapTypes(mapTypes);

    QGeoTileFetcherGoogle *tileFetcher = new QGeoTileFetcherGoogle(this);
    if (parameters.contains(QStringLiteral("useragent"))) {
        const QByteArray ua = parameters.value(QStringLiteral("useragent")).toString().toLatin1();
        tileFetcher->setUserAgent(ua);
    } else
        // QGC Default
        tileFetcher->setUserAgent("qgroundcontrol.org");

    setTileFetcher(tileFetcher);

    QString cacheDir;
    if (parameters.contains(QStringLiteral("mapping.cache.directory")))
        cacheDir = parameters.value(QStringLiteral("mapping.cache.directory")).toString();
    else {
        cacheDir = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + QLatin1String("/QGCMapCache");
        if(!QDir::root().mkpath(cacheDir)) {
            qWarning() << "Could not create mapping disk cache directory: " << cacheDir;
            cacheDir = QDir::homePath() + QLatin1String("/.qgcmapscache/");
        }
    }

    if(!QDir::root().mkpath(cacheDir))
    {
        qWarning() << "Could not create mapping disk cache directory: " << cacheDir;
        cacheDir.clear();
    }
    //else {
    //    qDebug() << "Mapping cache directory:" << cacheDir;
    //}

    QGeoTileCache *tileCache = createTileCacheWithDir(cacheDir);

    int cacheLimit = 0;
    if (parameters.contains(QStringLiteral("mapping.cache.disk.size"))) {
      bool ok = false;
      cacheLimit = parameters.value(QStringLiteral("mapping.cache.disk.size")).toString().toInt(&ok);
      if (!ok)
          cacheLimit = 0;
    }
    if(!cacheLimit)
        // QGC Default
        cacheLimit = 1024 * 1024 * 1024;
    tileCache->setMaxDiskUsage(cacheLimit);
    //qDebug() << "Disk caching limit:" << cacheLimit;

    cacheLimit = 0;
    if (parameters.contains(QStringLiteral("mapping.cache.memory.size"))) {
      bool ok = false;
      cacheLimit = parameters.value(QStringLiteral("mapping.cache.memory.size")).toString().toInt(&ok);
      if (!ok)
          cacheLimit = 0;
    }
    if(!cacheLimit)
        // QGC Default
        cacheLimit = 10 * 1024 * 1024;
    tileCache->setMaxMemoryUsage(cacheLimit);
    //qDebug() << "Memory caching limit:" << cacheLimit;

    cacheLimit = 0;
    if (parameters.contains(QStringLiteral("mapping.cache.texture.size"))) {
      bool ok = false;
      cacheLimit = parameters.value(QStringLiteral("mapping.cache.texture.size")).toString().toInt(&ok);
      if (!ok)
          cacheLimit = 0;
    }
    if(!cacheLimit)
        // QGC Default
        cacheLimit = 10 * 1024 * 1024;
    tileCache->setExtraTextureUsage(cacheLimit);

    *error = QGeoServiceProvider::NoError;
    errorString->clear();
}

QGeoTiledMappingManagerEngineGoogle::~QGeoTiledMappingManagerEngineGoogle()
{
}

QGeoMapData *QGeoTiledMappingManagerEngineGoogle::createMapData()
{
    return new QGeoTiledMapData(this, 0);
}

QT_END_NAMESPACE