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author | Asheem Mamoowala <asheem.mamoowala@mapbox.com> | 2018-06-26 15:51:49 -0700 |
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committer | Asheem Mamoowala <asheem.mamoowala@mapbox.com> | 2018-06-26 15:51:49 -0700 |
commit | 0b201f75a75b26516e3c12d38ab72b75de2ef830 (patch) | |
tree | 446f8f8588fb540eb7b9f9c15e8032576eca2a0c | |
parent | 95fd7ee74257fded4a23cf8c06144f276804a04c (diff) | |
download | qtlocation-mapboxgl-upstream/qt-get-filter.tar.gz |
-rw-r--r-- | platform/qt/include/qmapboxgl.hpp | 2 | ||||
-rw-r--r-- | platform/qt/src/qmapboxgl.cpp | 75 |
2 files changed, 76 insertions, 1 deletions
diff --git a/platform/qt/include/qmapboxgl.hpp b/platform/qt/include/qmapboxgl.hpp index ac143066e3..a699b77cec 100644 --- a/platform/qt/include/qmapboxgl.hpp +++ b/platform/qt/include/qmapboxgl.hpp @@ -239,7 +239,7 @@ public: QList<QString> layerIds() const; void setFilter(const QString &layer, const QVariant &filter); - + QVariant getFilter(const QString &layer) const; // When rendering on a different thread, // should be called on the render thread. void createRenderer(); diff --git a/platform/qt/src/qmapboxgl.cpp b/platform/qt/src/qmapboxgl.cpp index 581a1c4111..c15d8654b5 100644 --- a/platform/qt/src/qmapboxgl.cpp +++ b/platform/qt/src/qmapboxgl.cpp @@ -55,6 +55,10 @@ #include <QString> #include <QStringList> #include <QThreadStorage> +#include <QVariant> +#include <QVariantList> +#include <QVariantMap> +#include <QColor> #include <memory> @@ -1572,6 +1576,77 @@ void QMapboxGL::setFilter(const QString& layer, const QVariant& filter) qWarning() << "Layer doesn't support filters"; } +QVariant QVariantFromValue(const mbgl::Value &value) { + return value.match( + [](const mbgl::NullValue) { + return QVariant(); + }, [](const bool value) { + return QVariant(value); + }, [](const float value) { + return QVariant(value); + }, [](const int64_t value) { + return QVariant(value); + }, [](const double value) { + return QVariant(value); + }, [](const std::string &value) { + return QVariant(value.c_str()); + }, [](const mbgl::Color &value) { + return QColor(value.r, value.g, value.b, value.a); + }, [&](const std::vector<mbgl::Value> &vector) { + QVariantList list; + list.reserve(vector.size()); + for (auto &value : vector) { + list.append(QVariantFromValue(value)); + } + return list; + }, [&](const std::unordered_map<std::string, mbgl::Value> &map) { + QVariantMap varMap; + for (auto &item : map) { + varMap.insert(item.first.c_str(), QVariantFromValue(item.second)); + } + return varMap; + }, [](const auto &) { + return QVariant(); + }); +} + +QVariant QMapboxGL::getFilter(const QString &layer) const { + using namespace mbgl::style; + using namespace mbgl::style::conversion; + + Layer* layer_ = d_ptr->mapObj->getStyle().getLayer(layer.toStdString()); + if (!layer_) { + qWarning() << "Layer not found:" << layer; + return QVariant(); + } + + Filter filter_; + + if (layer_->is<FillLayer>()) { + filter_ = layer_->as<FillLayer>()->getFilter(); + } else if (layer_->is<LineLayer>()) { + filter_ = layer_->as<LineLayer>()->getFilter(); + } else if (layer_->is<SymbolLayer>()) { + filter_ = layer_->as<SymbolLayer>()->getFilter(); + } else if (layer_->is<CircleLayer>()) { + filter_ = layer_->as<CircleLayer>()->getFilter(); + } else if (layer_->is<FillExtrusionLayer>()) { + filter_ = layer_->as<FillExtrusionLayer>()->getFilter(); + } else { + qWarning() << "Layer doesn't support filters"; + return QVariant(); + } + + if (!filter_.expression) { + qWarning() << "getFilter only supports expression-based filters"; + return QVariant(); + } + + auto serialized = (**filter_.expression).serialize(); + return QVariantFromValue(serialized); + + +} /*! Creates the infrastructure needed for rendering the map. It should be called before any call to render(). |