Web Map Service (WMS) is an Open Geospatial Consortium (OGC) standard for delivering map images from an online service. WMS layer displays data from a web service that provides maps in the form of server-rendered images. The service may be hosted in ArcGIS Enterprise or in a third party server. This API supports WMS versions 1.1.0, 1.1.1, and 1.3.0.
Functional characteristicsA WMS service can contain multiple layers in a hierarchy. A WMS layer can be constructed directly with a URL to a service and the uniquely identifying name of the desired layer. Alternatively, a WmsService can be used to programmatically explore the available layers and allow the user to choose layers at run time.
The maps provided by a WMS service use predefined symbology defined by the server. As a result, it is not possible to apply custom renderers or to visualize feature selection. WMS layers can have multiple style options. Your app can choose from the available styles.
Some layers can be marked as opaque, which means that they cover most of the map area and are good candidates for use as a basemap.
WMS layers support identify and time. They do not support selection or query. Note that due to the nature of WMS, it is not possible to retrieve feature geometry from WMS identify results. WMS layers support custom parameters, which can be specified for the service or an individual layer.
Performance characteristicsWMS servers render map images on demand, which can require more server resources than a similar tiled service. WMS requires a service connection at all times.
Relevant samples:
[explicit] WmsLayer::WmsLayer(Esri::ArcGISRuntime::Item *item, QObject *parent = nullptr)
Creates a WMS layer from a portal item.
See also Layer::item.
[explicit] WmsLayer::WmsLayer(const QList<Esri::ArcGISRuntime::WmsLayerInfo> &layerInfos, QObject *parent = nullptr)
Creates a WmsLayer from the specified WmsLayerInfo objects.
Creates a WmsLayer with known URL and layer names.
To specify a preferred WMS version, set the 'VERSION' parameter in the 'GetCapabilities' URL for the service.
[override virtual noexcept] WmsLayer::~WmsLayer()
Destructor.
[since Esri::ArcGISRuntime 100.3] QMap<QString, QString> WmsLayer::customParameters() const
Returns a QMap (aka. dictionary) of custom parameters to be sent with WMS requests issued by this layer.
These parameters are appended to GetMap and GetFeatureInfo requests. If a parameter with the same name is defined in WmsService::customParameters, then layer-specific values take precedence over service-wide values.
This function was introduced in Esri::ArcGISRuntime 100.3.
See also setCustomParameters().
[override virtual, since Esri::ArcGISRuntime 100.3] Esri::ArcGISRuntime::TimeExtent WmsLayer::fullTimeExtent() const
Reimplements: TimeAware::fullTimeExtent() const.
Returns the full time extent of the layer.
If the layer, such as an ArcGISMapImageLayer, has sublayers with different time extents, fullTimeExtent is a union of its sublayer's time extents.
This function was introduced in Esri::ArcGISRuntime 100.3.
[signal, since Esri::ArcGISRuntime 100.3] void WmsLayer::fullTimeExtentChanged()
Signal emitted when the fullTimeExtent changes.
This function was introduced in Esri::ArcGISRuntime 100.3.
See also TimeAware.
[override virtual, since Esri::ArcGISRuntime 100.3] bool WmsLayer::isSupportsTimeFiltering() const
Reimplements: TimeAware::isSupportsTimeFiltering() const.
Returns true if the layer supports filtering data based on its time values, false otherwise.
This function was introduced in Esri::ArcGISRuntime 100.3.
[override virtual, since Esri::ArcGISRuntime 100.3] bool WmsLayer::isTimeFilteringEnabled() const
Reimplements: TimeAware::isTimeFilteringEnabled() const.
Returns true if the layer filters data based on its GeoView::timeExtent, false otherwise.
This is only applicable if the layer's isSupportsTimeFiltering value is true. If the GeoView::timeExtent value is empty, no time filtering is applied and all content is rendered.
This function was introduced in Esri::ArcGISRuntime 100.3.
QList<Esri::ArcGISRuntime::WmsLayerInfo> WmsLayer::layerInfos() constReturns the WMS Layer's set of WmsLayerInfo objects.
WmsLayerInfo objects describe the layers (as provided by the service). Multiple layers from a WmsService may be included in a single WmsLayer.
QStringList WmsLayer::layerNames() constReturns a list of names of visible WMS layers.
See also WmsLayerInfo.
Esri::ArcGISRuntime::MapServiceImageFormat WmsLayer::preferredImageFormat() constReturns the preferred image format of the WmsLayer.
If a preferred format is not specified prior to loading, then MapServiceImageFormat::PNG is used.
See also setPreferredImageFormat().
quint64 WmsLayer::refreshInterval() constReturns the refresh interval used by the layer, in milliseconds.
Layers request data from the service each time this interval elapses. A value of 0 means to never refresh.
See also setRefreshInterval().
[since Esri::ArcGISRuntime 100.3] void WmsLayer::setCustomParameters(const QMap<QString, QString> &customParameters)
Sets the customParameters to customParameters.
This function was introduced in Esri::ArcGISRuntime 100.3.
See also customParameters.
[since Esri::ArcGISRuntime 100.2] void WmsLayer::setPreferredImageFormat(Esri::ArcGISRuntime::MapServiceImageFormat preferredImageFormat)
Sets the preferredImageFormat to preferredImageFormat.
This function was introduced in Esri::ArcGISRuntime 100.2.
See also preferredImageFormat.
void WmsLayer::setRefreshInterval(quint64 milliseconds)Sets the refresh interval used by the layer to milliseconds.
Layers request data from the service each time this interval elapses. A value of 0 means to never refresh.
See also refreshInterval().
[override virtual, since Esri::ArcGISRuntime 100.3] void WmsLayer::setTimeFilteringEnabled(bool timeFilteringEnabled)
Reimplements: TimeAware::setTimeFilteringEnabled(bool timeFilteringEnabled).
Sets the timeFilteringEnabled to timeFilteringEnabled.
This function was introduced in Esri::ArcGISRuntime 100.3.
See also isTimeFilteringEnabled.
[override virtual, since Esri::ArcGISRuntime 100.3] void WmsLayer::setTimeOffset(const Esri::ArcGISRuntime::TimeValue &timeOffset)
Reimplements: TimeAware::setTimeOffset(const Esri::ArcGISRuntime::TimeValue &timeOffset).
Sets the timeOffset to timeOffset.
This function was introduced in Esri::ArcGISRuntime 100.3.
See also timeOffset.
[since Esri::ArcGISRuntime 100.14] QList<Esri::ArcGISRuntime::WmsSublayer *> WmsLayer::sublayers() const
Returns a list of sublayers for this WMS layer.
This function was introduced in Esri::ArcGISRuntime 100.14.
[override virtual, since Esri::ArcGISRuntime 100.3] Esri::ArcGISRuntime::TimeValue WmsLayer::timeInterval() const
Reimplements: TimeAware::timeInterval() const.
Returns the suggested time slider step size for this time aware layer.
You can use this information to set the step size for a time slider control. The value is empty if no time interval is suggested. The author of the layer's data typically configures this property if the data has been collected on a regular basis. For example, the daily position of a hurricane.
This function was introduced in Esri::ArcGISRuntime 100.3.
[override virtual, since Esri::ArcGISRuntime 100.3] Esri::ArcGISRuntime::TimeValue WmsLayer::timeOffset() const
Reimplements: TimeAware::timeOffset() const.
Returns the amount of time by which the temporal values of this layer's data points are offset when displaying it in a GeoView.
The time offset is subtracted from the time extent set on the layer's GeoView. This is useful if you want to overlay data in multiple layers that lies within different temporal extents. For example, if you want to compare data in one layer for a certain year with data in the same layer from the subsequent year, you can create two layers that reference the same data's service endpoint but set the TimeValue in one of the layers to be one year.
This function was introduced in Esri::ArcGISRuntime 100.3.
See also setTimeOffset().
[override virtual] QUrl WmsLayer::url() const
Reimplements: RemoteResource::url() const.
Returns the URL of the WmsLayer.
This method can't be called once the layer is loading else ErrorType::CommonIllegalState error will occur.
{WmsLayer(const QUrl&, const QStringList&, QObject*)}
See also Esri::ArcGISRuntime::WmsLayer::WmsLayer(const QUrl&, const QStringList&, QObject*).
Esri::ArcGISRuntime::WmsVersion WmsLayer::version() constReturns the version of the WMS specification used by this layer.
This API supports the following WMS versions: 1.3.0, 1.1.1, and 1.1.0. By default this value is the latest supported WMS version.
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