Widget Gallery

#include <Wt/WCheckBox.h>
#include <Wt/WComboBox.h>
#include <Wt/WContainerWidget.h>
#include <Wt/WHBoxLayout.h>
#include <Wt/WGoogleMap.h>
#include <Wt/WPushButton.h>
#include <Wt/WStringListModel.h>
#include <Wt/WTemplate.h>

class GoogleMapExample : public Wt::WContainerWidget
{
public:
    GoogleMapExample()
        : WContainerWidget()
    {
        auto layout = setLayout(std::make_unique<Wt::WHBoxLayout>());

        setHeight(400);

        map_ = layout->addWidget(std::make_unique<Wt::WGoogleMap>(Wt::GoogleMapsVersion::v3), 1);

        map_->setMapTypeControl(Wt::MapTypeControl::Default);
        map_->enableScrollWheelZoom();

        auto controls = layout->addWidget(std::make_unique<Wt::WTemplate>(
              tr("graphics-GoogleMap-controls")));

        auto zoomIn = controls->bindWidget("zoom-in", std::make_unique<Wt::WPushButton>("+"));
        zoomIn->addStyleClass("zoom");

        zoomIn->clicked().connect([=] {
            map_->zoomIn();
        });

        auto zoomOut = controls->bindWidget("zoom-out", std::make_unique<Wt::WPushButton>("-"));
        zoomOut->addStyleClass("zoom");

        zoomOut->clicked().connect([=] {
            map_->zoomOut();
        });

        std::string cityNames[] = { "Brussels", "Lisbon", "Paris" };
        Wt::WGoogleMap::Coordinate cityCoords[] = {
          Wt::WGoogleMap::Coordinate(50.85034,4.35171),
          Wt::WGoogleMap::Coordinate(38.703731,-9.135475),
          Wt::WGoogleMap::Coordinate(48.877474, 2.312579)
        };

        for (unsigned i = 0; i < 3; ++i) {
            auto city = controls->bindWidget(cityNames[i],
                std::make_unique<Wt::WPushButton>(cityNames[i]));

            Wt::WGoogleMap::Coordinate coord = cityCoords[i];
            city->clicked().connect([=] {
                map_->panTo(coord);
            });
        }

        auto reset = controls->bindWidget("emweb", std::make_unique<Wt::WPushButton>("Reset"));

        reset->clicked().connect([=] {
            this->panToEmWeb();
        });

        auto savePosition = controls->bindWidget("save-position",
            std::make_unique<Wt::WPushButton>("Save current position"));

        savePosition->clicked().connect([=] {
            this->savePosition();
        });

        returnToPosition_ = controls->bindWidget("return-to-saved-position",
            std::make_unique<Wt::WPushButton>("Return to saved position"));
        returnToPosition_->setEnabled(false);

        returnToPosition_->clicked().connect([=] {
            map_->returnToSavedPosition();
        });

        mapTypeModel_ = std::make_shared<Wt::WStringListModel>();
        addMapTypeControl("No control", Wt::MapTypeControl::None);
        addMapTypeControl("Default", Wt::MapTypeControl::Default);
        addMapTypeControl("Menu", Wt::MapTypeControl::Menu);
        if (map_->apiVersion() == Wt::GoogleMapsVersion::v3)
            addMapTypeControl("Horizontal bar",
                              Wt::MapTypeControl::HorizontalBar);

        auto menuControls = controls->bindWidget("control-menu-combo",
            std::make_unique<Wt::WComboBox>());
        menuControls->setModel(mapTypeModel_);
        menuControls->setCurrentIndex(1);

        menuControls->activated().connect([=] (int mapType) {
            this->setMapTypeControl(mapType);
        });

        auto draggingCB = controls->bindWidget("dragging-cb",
            std::make_unique<Wt::WCheckBox>("Enable dragging"));
        draggingCB->setChecked(true);
        map_->enableDragging();

        draggingCB->checked().connect([=] {
            map_->enableDragging();
        });

        draggingCB->unChecked().connect([=] {
            map_->disableDragging();
        });

        auto enableDoubleClickZoomCB =
            controls->bindWidget("double-click-zoom-cb",
                std::make_unique<Wt::WCheckBox>("Enable double click zoom"));
        enableDoubleClickZoomCB->setChecked(false);
        map_->disableDoubleClickZoom();

        enableDoubleClickZoomCB->checked().connect([=] {
            map_->enableDoubleClickZoom();
        });

        enableDoubleClickZoomCB->unChecked().connect([=] {
            map_->disableDoubleClickZoom();
        });

        auto enableScrollWheelZoomCB =
            controls->bindWidget("scroll-wheel-zoom-cb",
                std::make_unique<Wt::WCheckBox>("Enable scroll wheel zoom"));
        enableScrollWheelZoomCB->setChecked(true);
        map_->enableScrollWheelZoom();

        enableScrollWheelZoomCB->checked().connect([=] {
            map_->enableScrollWheelZoom();
        });

        enableScrollWheelZoomCB->unChecked().connect([=] {
            map_->disableScrollWheelZoom();
        });

        std::vector<Wt::WGoogleMap::Coordinate> road = roadDescription();

        map_->addPolyline(road, Wt::WColor(0, 191, 255));

        //Koen's favourite bar!
        map_->addMarker(Wt::WGoogleMap::Coordinate(50.885069,4.71958));

        map_->setCenter(road[road.size()-1]);

        map_->openInfoWindow(road[0],
           "<p><img src=\"https://www.emweb.be/css/emweb_small.png\" /></p>"
           "<p><strong>Emweb office</strong></p>");

        map_->clicked().connect([=] (Wt::WGoogleMap::Coordinate c) {
            this->googleMapClicked(c);
        });

        map_->doubleClicked().connect([=] (Wt::WGoogleMap::Coordinate c) {
            this->googleMapDoubleClicked(c);
        });
    }

private:
    void panToEmWeb() {
        map_->panTo(Wt::WGoogleMap::Coordinate(50.9082, 4.66056));
    }

    void savePosition() {
        returnToPosition_->setEnabled(true);
        map_->savePosition();
    }

    void addMapTypeControl(const Wt::WString &description,
                           Wt::MapTypeControl value) {
        int r = mapTypeModel_->rowCount();
        mapTypeModel_->insertRow(r);
        mapTypeModel_->setData(r, 0, description);
        mapTypeModel_->setData(r, 0, value, Wt::ItemDataRole::User);
    }

    void setMapTypeControl(int row) {
        Wt::cpp17::any mtc = mapTypeModel_->data(row, 0, Wt::ItemDataRole::User);
        map_->setMapTypeControl(Wt::cpp17::any_cast<Wt::MapTypeControl>
                                (mtc));
    }

    std::vector<Wt::WGoogleMap::Coordinate> roadDescription() {
      std::vector<Wt::WGoogleMap::Coordinate> result;
      result.push_back(Wt::WGoogleMap::Coordinate(50.9082, 4.66056));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90901, 4.66426));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90944, 4.66514));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90968, 4.66574));
      result.push_back(Wt::WGoogleMap::Coordinate(50.91021, 4.66541));
      result.push_back(Wt::WGoogleMap::Coordinate(50.9111, 4.66508));
      result.push_back(Wt::WGoogleMap::Coordinate(50.9119, 4.66469));
      result.push_back(Wt::WGoogleMap::Coordinate(50.91224, 4.66463));
      result.push_back(Wt::WGoogleMap::Coordinate(50.91227, 4.66598));
      result.push_back(Wt::WGoogleMap::Coordinate(50.9122, 4.66786));
      result.push_back(Wt::WGoogleMap::Coordinate(50.91199, 4.66962));
      result.push_back(Wt::WGoogleMap::Coordinate(50.91169, 4.67117));
      result.push_back(Wt::WGoogleMap::Coordinate(50.91107, 4.67365));
      result.push_back(Wt::WGoogleMap::Coordinate(50.91061, 4.67515));
      result.push_back(Wt::WGoogleMap::Coordinate(50.91023, 4.67596));
      result.push_back(Wt::WGoogleMap::Coordinate(50.9098, 4.67666));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90953, 4.67691));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90912, 4.67746));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90882, 4.67772));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90838, 4.67801));
      result.push_back(Wt::WGoogleMap::Coordinate(50.9083, 4.67798));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90803, 4.67814));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90742, 4.67836));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90681, 4.67845));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90209, 4.67871));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90134, 4.67893));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90066, 4.6793));
      result.push_back(Wt::WGoogleMap::Coordinate(50.90015, 4.67972));
      result.push_back(Wt::WGoogleMap::Coordinate(50.89945, 4.68059));
      result.push_back(Wt::WGoogleMap::Coordinate(50.89613, 4.68582));
      result.push_back(Wt::WGoogleMap::Coordinate(50.8952, 4.68719));
      result.push_back(Wt::WGoogleMap::Coordinate(50.89464, 4.68764));
      result.push_back(Wt::WGoogleMap::Coordinate(50.89183, 4.69032));
      result.push_back(Wt::WGoogleMap::Coordinate(50.89131, 4.69076));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88916, 4.69189));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88897, 4.69195));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88859, 4.69195));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88813, 4.69193));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88697, 4.69135));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88669, 4.6913));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88531, 4.69155));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88425, 4.69196));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88398, 4.69219));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88391, 4.69226));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88356, 4.69292));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88323, 4.69361));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88067, 4.6934));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88055, 4.69491));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88036, 4.69616));
      result.push_back(Wt::WGoogleMap::Coordinate(50.88009, 4.69755));
      result.push_back(Wt::WGoogleMap::Coordinate(50.87973, 4.69877));
      result.push_back(Wt::WGoogleMap::Coordinate(50.87951, 4.69856));
      result.push_back(Wt::WGoogleMap::Coordinate(50.87933, 4.69831));
      result.push_back(Wt::WGoogleMap::Coordinate(50.87905, 4.69811));
      result.push_back(Wt::WGoogleMap::Coordinate(50.879, 4.69793));
      result.push_back(Wt::WGoogleMap::Coordinate(50.87856, 4.69745));
      result.push_back(Wt::WGoogleMap::Coordinate(50.87849, 4.69746));
      result.push_back(Wt::WGoogleMap::Coordinate(50.87843, 4.69758));
      result.push_back(Wt::WGoogleMap::Coordinate(50.87822, 4.69758));
      result.push_back(Wt::WGoogleMap::Coordinate(50.87814, 4.69766));
      result.push_back(Wt::WGoogleMap::Coordinate(50.87813, 4.69788));
      result.push_back(Wt::WGoogleMap::Coordinate(50.87789, 4.69862));

      return result;
    }

    void googleMapDoubleClicked(Wt::WGoogleMap::Coordinate c) {
        std::cerr << "Double clicked at coordinate ("
                  << c.latitude() << "," << c.longitude() << ")";
    }

    void googleMapClicked(Wt::WGoogleMap::Coordinate c) {
        std::cerr << "Clicked at coordinate ("
                  << c.latitude() << "," << c.longitude() << ")";
    }

private:
    Wt::WGoogleMap                           *map_;
    std::shared_ptr<Wt::WAbstractItemModel>   mapTypeModel_;

    Wt::WPushButton                          *returnToPosition_;
};


auto map = std::make_unique<GoogleMapExample>();