WMTS services can have several layers. You can use the ArcGIS Maps SDK for Qt to explore the layers available from a service. This would commonly be used to enable a browsing experience where users can choose which layers they want to display at run time.
How to use the sample
The layer will be displayed automatically. Pan and zoom to explore the map.
How it works
To display a WMTS layer directly from a URL:
Create a WmtsService object using the URL of the WMTS service.
Create a WmtsLayer object with the ID of the layer to display.
To explore layers from a WMTS service:
Create a WmtsService object using the URL of the WMTS service.
After loading the WMTS service, get the list of WmtsLayerInfo objects from the service info of the WMTS service.
Use one of the layer infos to create the WMTS layer.
Create a basemap with the WMTS layer and set it to the map.
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// [WriteFile Name=WMTS_Layer, Category=Layers]// [Legal]// Copyright 2017 Esri.// 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.// [Legal]#ifdef PCH_BUILD#include"pch.hpp"#endif// PCH_BUILD#include"WMTS_Layer.h"#include"Map.h"#include"MapQuickView.h"#include"WmtsLayer.h"#include"WmtsService.h"#include"WmtsServiceInfo.h"#include"WmtsLayerInfo.h"#include"Basemap.h"#include"Error.h"usingnamespace Esri::ArcGISRuntime;
WMTS_Layer::WMTS_Layer(QQuickItem* parent /* = nullptr */):
QQuickItem(parent)
{
}
voidWMTS_Layer::init(){
// Register the map view for QML qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
qmlRegisterType<WMTS_Layer>("Esri.Samples", 1, 0, "WMTS_LayerSample");
}
voidWMTS_Layer::componentComplete(){
QQuickItem::componentComplete();
// find QML MapView component m_mapView = findChild<MapQuickView*>("mapView");
// create the WMTS layercreateWmtsLayer();
}
voidWMTS_Layer::createWmtsLayer(){
// create the service m_service = newWmtsService(m_wmtsServiceUrl, this);
// connect to the doneLoading signal of the serviceconnect(m_service, &WmtsService::doneLoading, this, [this](const Error& loadError)
{
if (!loadError.isEmpty())
{
qDebug() << "Error:" << loadError.message();
return;
}
// get the layer info list WmtsServiceInfo serviceInfo = m_service->serviceInfo();
QList<WmtsLayerInfo> layerInfos = serviceInfo.layerInfos();
// get the first layer ID from the list QString layerId = layerInfos.at(0).wmtsLayerId();
// create the WMTS layer WmtsLayer* wmtsLayer = newWmtsLayer(m_wmtsServiceUrl, layerId, this);
// create a basemap from the layer Basemap* basemap = newBasemap(wmtsLayer, this);
// create a map Map* map = newMap(basemap, this);
// set the map on the mapview m_mapView->setMap(map);
});
// load the service m_service->load();
}
