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// 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.using Esri.ArcGISRuntime.Geometry;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.UI;
using Esri.ArcGISRuntime.UI.Controls;
namespaceArcGIS.WinUI.Samples.ShowCallout{
[ArcGIS.Samples.Shared.Attributes.Sample(
name: "Show callout",
category: "MapView",
description: "Show a callout with the latitude and longitude of user-tapped points.",
instructions: "Tap anywhere on the map. A callout showing the WGS84 coordinates for the tapped point will appear.",
tags: new[] { "balloon", "bubble", "callout", "flyout", "flyover", "info window", "popup", "tap" })]
publicpartialclassShowCallout {
publicShowCallout() {
InitializeComponent();
Initialize();
}
privatevoidInitialize() {
// Create a new basemap using the streets base layer Basemap myBasemap = new Basemap(BasemapStyle.ArcGISStreets);
// Create a new map based on the streets basemap Map myMap = new Map(myBasemap);
// Assign the map to the MapView MyMapView.Map = myMap;
// Wire up the MapView GeoVewTapped event MyMapView.GeoViewTapped += MyMapView_GeoViewTapped;
}
privatevoidMyMapView_GeoViewTapped(object sender, GeoViewInputEventArgs e) {
// Get the user-tapped location MapPoint mapLocation = e.Location;
// Project the user-tapped map point location to a geometry Geometry myGeometry = mapLocation.Project(SpatialReferences.Wgs84);
// Convert to geometry to a traditional Lat/Long map point MapPoint projectedLocation = (MapPoint)myGeometry;
// Format the display callout string based upon the projected map point (example: "Lat: 100.123, Long: 100.234")string mapLocationDescription = string.Format("Lat: {0:F3} Long:{1:F3}", projectedLocation.Y, projectedLocation.X);
// Create a new callout definition using the formatted string CalloutDefinition myCalloutDefinition = new CalloutDefinition("Location:", mapLocationDescription);
// Display the callout MyMapView.ShowCalloutAt(mapLocation, myCalloutDefinition);
}
}
}