Bookmarks are used for easily storing and accessing saved locations on the map. Bookmarks are of interest in educational apps (e.g. touring historical sites) or more specifically, for a land management company wishing to visually monitor flood levels over time at a particular location. These locations can be saved as bookmarks and revisited easily each time their basemap data has been updated (e.g. working with up to date satellite imagery to monitor water levels).
How to use the sample
The map in the sample comes pre-populated with a set of bookmarks. To access a bookmark and move to that location, click on a bookmark's name from the list. To add a bookmark, pan and/or zoom to a new location and click on the '+' in the bottom corner. Enter a unique name for the bookmark and click ok, and the bookmark will be added to the list
How it works
Create a new Map object and create a list of bookmarks: map.bookmarks.append(bookmark).
To create a new bookmark and add it to the bookmark list:
Create a new Bookmark object passing in text (the name of the bookmark) and a Viewpoint as parameters.
Relevant API
Bookmark
BookmarkListModel
Viewpoint
Tags
bookmark, extent, location, zoom
Sample Code
ManageBookmarks.qml
Use dark colors for code blocksCopy
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// [WriteFile Name=ManageBookmarks, Category=Maps]// [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 QtQuick.Controls
import QtQuick.Layouts
import Esri.ArcGISRuntime
Rectangle {
id: rootRectanglewidth: 800height: 600// Create MapView that contains a MapMapView {
id: mapViewanchors.fill: parentComponent.onCompleted: {
// Set the focus on MapView to initially enable keyboard navigation forceActiveFocus();
}
Map {
id: map// Set the initial basemap to Imagery with LabelsBasemap {
initStyle: Enums.BasemapStyleArcGISImagery
}
onLoadStatusChanged: {
// Once the map is loaded, add in the initial bookmarksif (loadStatus === Enums.LoadStatusLoaded) {
createBookmark("Mysterious Desert Pattern", desertViewpoint);
createBookmark("Strange Symbol", symbolViewpoint);
createBookmark("Guitar Shaped Forest", guitarViewpoint);
createBookmark("Grand Prismatic Spring", springViewpoint);
bookmarks.currentIndex = 0;
}
}
// helper function for creating bookmarksfunctioncreateBookmark(bookmarkName,bookmarkViewpoint) {
// create a bookmark object and assign the name and viewpointconst bookmark = ArcGISRuntimeEnvironment.createObject("Bookmark");
bookmark.name = bookmarkName;
bookmark.viewpoint = bookmarkViewpoint;
// append the bookmark to the map's BookmarkListModel map.bookmarks.append(bookmark);
}
}
// Create the add button so new bookmarks can be addedRectangle {
id: addButtonproperty bool pressed: falseanchors {
right: parent.right
bottom: mapView.attributionTop
rightMargin: 20bottomMargin: 20 }
width: childrenRect.width
height: childrenRect.height
color: pressed ? "#959595" : "#D6D6D6"radius: 100border {
color: "#585858"width: 1 }
Image {
rotation: 45width: 32height: width
source: "qrc:/Samples/Maps/ManageBookmarks/add.png" }
MouseArea {
anchors.fill: parentonPressed: addButton.pressed = trueonReleased: addButton.pressed = falseonClicked: {
// Show the add window when it is clicked addWindow.visible = true;
}
}
}
}
// Create Viewpoints for the 4 initial bookmarksViewpointExtent {
id: desertViewpointextent: Envelope {
xMin: 3742993.127298778xMax: 3744795.1333054285yMin: 3170396.4675719286yMax: 3171745.88077spatialReference: SpatialReference { wkid: 102100 }
}
}
ViewpointExtent {
id: symbolViewpointextent: Envelope {
xMin: -13009913.860076642xMax: -13009442.089218518yMin: 4495026.9307899885yMax: 4495404.031910696spatialReference: SpatialReference { wkid: 102100 }
}
}
ViewpointExtent {
id: guitarViewpointextent: Envelope {
xMin: -7124497.45137465xMax: -7121131.417429369yMin: -4012221.6124684606yMax: -4009697.0870095spatialReference: SpatialReference { wkid: 102100 }
}
}
ViewpointExtent {
id: springViewpointextent: Envelope {
xMin: -12338668.348591767xMax: -12338247.594362013yMin: 5546908.424239618yMax: 5547223.989911933spatialReference: SpatialReference { wkid: 102100 }
}
}
// Create a combo box that allows for switching between bookmarksComboBox {
id: bookmarksanchors {
left: parent.left
top: parent.top
margins: 5 }
// Add a background to the ComboBoxRectangle {
anchors.fill: parentradius: 10// Make the rectangle visible if a dropdown indicator exists// An indicator only exists if a theme is setvisible: parent.indicator
border.width: 1 }
property int modelWidth: 0width: modelWidth + rightPadding + leftPadding + (indicator ? indicator.width : 10)
model: map.bookmarks
Connections {
target: bookmarks.model
functiononCountChanged() {
const model = bookmarks.model;
if (model) {
for (let i = 0; i < model.count; ++i) {
metrics.text = model.get(i).name;
bookmarks.modelWidth = Math.max(bookmarks.modelWidth,
metrics.width);
}
}
}
}
onCurrentIndexChanged: {
if (currentIndex >= 0) {
const bookmark = map.bookmarks.get(currentIndex);
if (bookmark) {
mapView.setViewpoint(
map.bookmarks.get(currentIndex).viewpoint);
}
}
}
TextMetrics {
id: metricsfont: bookmarks.font
}
}
// Create a window so names for new bookmarks can be specifiedRectangle {
id: addWindowanchors.centerIn: parentwidth: childrenRect.width
height: childrenRect.height
visible: falseenabled: visible
color: "lightgrey"opacity: .9radius: 5border {
color: "#4D4D4D"width: 1 }
MouseArea {
anchors.fill: parentonClicked: mouse => mouse.accepted = true;
}
GridLayout {
columns: 2Text {
text: qsTr("Provide the bookmark name")
font.pixelSize: 12Layout.columnSpan: 2Layout.margins: 5 }
TextField {
id: textFieldplaceholderText: qsTr("ex: Grand Canyon")
selectByMouse: trueLayout.columnSpan: 2Layout.margins: 5Layout.fillWidth: true }
Button {
text: "Cancel"onClicked: addWindow.visible = false;
Layout.margins: 5 }
Button {
text: qsTr("Done")
Layout.margins: 5Layout.alignment: Qt.AlignRight
onClicked: {
// Create the new bookmark by getting the current viewpoint and using the// user's input bookmark nameconst viewpoint = mapView.currentViewpointExtent;
map.createBookmark(textField.text,viewpoint);
bookmarks.currentIndex = map.bookmarks.count -1;
textField.text = "";
addWindow.visible = false;
}
}
}
}
}
