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#pragma once
#include <mapbox/geojson.hpp>
#include <mbgl/style/conversion/geojson.hpp>
#include <QMapbox>
#include <QByteArray>
#include <QDebug>
#include <QVariant>
#include <string>
namespace QMapbox {
mbgl::Point<double> asMapboxGLPoint(const QMapbox::Coordinate &coordinate) {
return mbgl::Point<double> { coordinate.second, coordinate.first };
}
mbgl::MultiPoint<double> asMapboxGLMultiPoint(const QMapbox::Coordinates &multiPoint) {
mbgl::MultiPoint<double> mbglMultiPoint;
mbglMultiPoint.reserve(multiPoint.size());
for (const auto &point: multiPoint) {
mbglMultiPoint.emplace_back(asMapboxGLPoint(point));
}
return mbglMultiPoint;
};
mbgl::LineString<double> asMapboxGLLineString(const QMapbox::Coordinates &lineString) {
mbgl::LineString<double> mbglLineString;
mbglLineString.reserve(lineString.size());
for (const auto &coordinate : lineString) {
mbglLineString.emplace_back(asMapboxGLPoint(coordinate));
}
return mbglLineString;
};
mbgl::MultiLineString<double> asMapboxGLMultiLineString(const QMapbox::CoordinatesCollection &multiLineString) {
mbgl::MultiLineString<double> mbglMultiLineString;
mbglMultiLineString.reserve(multiLineString.size());
for (const auto &lineString : multiLineString) {
mbglMultiLineString.emplace_back(std::forward<mbgl::LineString<double>>(asMapboxGLLineString(lineString)));
}
return mbglMultiLineString;
};
mbgl::Polygon<double> asMapboxGLPolygon(const QMapbox::CoordinatesCollection &polygon) {
mbgl::Polygon<double> mbglPolygon;
mbglPolygon.reserve(polygon.size());
for (const auto &linearRing : polygon) {
mbgl::LinearRing<double> mbglLinearRing;
mbglLinearRing.reserve(linearRing.size());
for (const auto &coordinate: linearRing) {
mbglLinearRing.emplace_back(asMapboxGLPoint(coordinate));
}
mbglPolygon.emplace_back(std::move(mbglLinearRing));
}
return mbglPolygon;
};
mbgl::MultiPolygon<double> asMapboxGLMultiPolygon(const QMapbox::CoordinatesCollections &multiPolygon) {
mbgl::MultiPolygon<double> mbglMultiPolygon;
mbglMultiPolygon.reserve(multiPolygon.size());
for (const auto &polygon : multiPolygon) {
mbglMultiPolygon.emplace_back(std::forward<mbgl::Polygon<double>>(asMapboxGLPolygon(polygon)));
}
return mbglMultiPolygon;
};
mbgl::Value asMapboxGLPropertyValue(const QVariant &value) {
auto valueList = [](const QVariantList &list) {
std::vector<mbgl::Value> mbglList;
mbglList.reserve(list.size());
for (const auto& listValue : list) {
mbglList.emplace_back(asMapboxGLPropertyValue(listValue));
}
return mbglList;
};
auto valueMap = [](const QVariantMap &map) {
std::unordered_map<std::string, mbgl::Value> mbglMap;
mbglMap.reserve(map.size());
auto it = map.constBegin();
while (it != map.constEnd()) {
mbglMap.emplace(std::make_pair(it.key().toStdString(), asMapboxGLPropertyValue(it.value())));
++it;
}
return mbglMap;
};
switch (value.type()) {
#if QT_VERSION >= 0x050000
case QMetaType::UnknownType:
#else
case QVariant::Invalid:
#endif
return mbgl::NullValue {};
case QMetaType::Bool:
return { value.toBool() };
case QMetaType::ULongLong:
return { uint64_t(value.toULongLong()) };
case QMetaType::LongLong:
return { int64_t(value.toLongLong()) };
case QMetaType::Double:
return { value.toDouble() };
case QMetaType::QString:
return { value.toString().toStdString() };
case QMetaType::QVariantList:
return valueList(value.toList());
case QMetaType::QVariantMap:
return valueMap(value.toMap());
default:
qWarning() << "Unsupported feature property value:" << value;
return {};
}
}
mbgl::FeatureIdentifier asMapboxGLFeatureIdentifier(const QVariant &id) {
switch (id.type()) {
#if QT_VERSION >= 0x050000
case QMetaType::UnknownType:
#else
case QVariant::Invalid:
#endif
return {};
case QMetaType::ULongLong:
return { uint64_t(id.toULongLong()) };
case QMetaType::LongLong:
return { int64_t(id.toLongLong()) };
case QMetaType::Double:
return { id.toDouble() };
case QMetaType::QString:
return { id.toString().toStdString() };
default:
qWarning() << "Unsupported feature identifier:" << id;
return {};
}
}
mbgl::Feature asMapboxGLFeature(const QMapbox::Feature &feature) {
mbgl::PropertyMap properties;
properties.reserve(feature.properties.size());
auto it = feature.properties.constBegin();
while (it != feature.properties.constEnd()) {
properties.emplace(std::make_pair(it.key().toStdString(), asMapboxGLPropertyValue(it.value())));
}
mbgl::FeatureIdentifier id = asMapboxGLFeatureIdentifier(feature.id);
if (feature.type == QMapbox::Feature::PointType) {
const QMapbox::Coordinates &points = feature.geometry.first().first();
if (points.size() == 1) {
return { asMapboxGLPoint(points.first()), std::move(properties), std::move(id) };
} else {
return { asMapboxGLMultiPoint(points), std::move(properties), std::move(id) };
}
} else if (feature.type == QMapbox::Feature::LineStringType) {
const QMapbox::CoordinatesCollection &lineStrings = feature.geometry.first();
if (lineStrings.size() == 1) {
return { asMapboxGLLineString(lineStrings.first()), std::move(properties), std::move(id) };
} else {
return { asMapboxGLMultiLineString(lineStrings), std::move(properties), std::move(id) };
}
} else { // PolygonType
const QMapbox::CoordinatesCollections &polygons = feature.geometry;
if (polygons.size() == 1) {
return { asMapboxGLPolygon(polygons.first()), std::move(properties), std::move(id) };
} else {
return { asMapboxGLMultiPolygon(polygons), std::move(properties), std::move(id) };
}
}
};
} // namespace QMapbox
namespace mbgl {
namespace style {
namespace conversion {
template <>
optional<GeoJSON> Converter<GeoJSON>::operator()(const QVariant& value, Error& error) const {
#if QT_VERSION >= 0x050000
if (value.typeName() == QStringLiteral("QMapbox::Feature")) {
#else
if (value.typeName() == QString("QMapbox::Feature")) {
#endif
return GeoJSON { asMapboxGLFeature(value.value<QMapbox::Feature>()) };
} else if (value.type() != QVariant::ByteArray) {
error = { "JSON data must be in QByteArray" };
return {};
}
QByteArray data = value.toByteArray();
return convert<GeoJSON>(std::string(data.constData(), data.size()), error);
}
} // namespace conversion
} // namespace style
} // namespace mbgl
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