View in QML C++ View on GitHub Sample viewer app
Use pictures for markers.
Use case
When marking geoelements on a map, using custom, unique symbols can be helpful for highlighting and differentiating between locations. For example, a tourism office may use pictures of landmarks as symbols on an online map or app, to help prospective visitors to orient themselves more easily around a city.
How to use the sample
When launched, this sample displays a map with three picture marker symbols. Pan and zoom to explore the map.
How it works
Create a PictureMarkerSymbol using the URL to an online or local image.
Create a Graphic and set its symbol to the picture marker symbol.
Relevant API
Offline Data
To set up the sample's offline data, see the Use offline data in the samples section of the Qt Samples repository overview.
About the data
The picture marker symbols in this sample are all constructed from different types of resources:
Campsite symbol constructed from a URL Blue pin with a star stored in the resource folder that comes with the application
Orange pin created from a file path on disk (which is written to disk when the app starts and cleaned up when the app closes).
graphics, marker, picture, symbol, visualization
Picture_Marker_Symbol.qml
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// [WriteFile Name=Picture_Marker_Symbol, Category=DisplayInformation]
// [Legal]
// Copyright 2016 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]
import QtQuick
import Esri.ArcGISExtras
import Esri.ArcGISRuntime
Rectangle {
clip : true
width : 800
height : 600
readonly property url dataPath : {
Qt.platform.os === "ios" ?
System.writableLocationUrl(System.StandardPathsDocumentsLocation) + "/ArcGIS/Runtime/Data" :
System.writableLocationUrl(System.StandardPathsHomeLocation) + "/ArcGIS/Runtime/Data"
}
ViewpointExtent {
id: startingVP
extent : Envelope {
xMin : -229100
xMax : -223300
yMin : 6550700
yMax : 6552100
spatialReference : SpatialReference { wkid : 3857 }
}
}
// Map view UI presentation at top
MapView {
id: mapView
anchors.fill : parent
Component.onCompleted : {
// Set the focus on MapView to initially enable keyboard navigation
forceActiveFocus();
}
Map {
Basemap {
initStyle : Enums.BasemapStyleArcGISTopographic
}
initialViewpoint : startingVP
}
GraphicsOverlay {
// create Campsite Symbol from URL
Graphic {
Point {
x : -228835
y : 6550763
spatialReference : SpatialReference { wkid : 3857 }
}
PictureMarkerSymbol {
url : "https://static.arcgis.com/images/Symbols/OutdoorRecreation/Camping.png"
width : 38.0
height : 38.0
}
}
// create blue symbol from local resource
Graphic {
Point {
x : -223560
y : 6552021
spatialReference : SpatialReference { wkid : 3857 }
}
PictureMarkerSymbol {
url : "qrc:/Samples/DisplayInformation/Picture_Marker_Symbol/blue_symbol.png"
width : 80.0
height : 80.0
}
}
// create orange symbol from file path
Graphic {
Point {
x : -226773
y : 6550477
spatialReference : SpatialReference { wkid : 3857 }
}
PictureMarkerSymbol {
url : dataPath + "/symbol/orange_symbol.png"
width : 64.0
height : 64.0
}
}
}
}
}
